From 43a97878ce14b72f0981164f87f2e35e14151312 Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Sun, 7 Apr 2024 11:22:09 +0200
Subject: Adding upstream version 110.0.1.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 .../EventTarget.worker.js                          | 23 ++++++
 .../DedicatedWorkerGlobalScope/onmessage.worker.js | 40 ++++++++++
 .../postMessage/event-ports-dedicated.html         | 15 ++++
 .../postMessage/event-ports-dedicated.js           |  3 +
 .../imagedata-cloned-canvas-in-array.html          | 22 ++++++
 .../imagedata-cloned-canvas-in-array.js            | 10 +++
 .../postMessage/message-event.html                 | 23 ++++++
 .../postMessage/message-event.js                   |  1 +
 .../postMessage/return-value.worker.js             |  8 ++
 .../postMessage/second-argument-dictionary.html    | 16 ++++
 .../postMessage/second-argument-dictionary.js      |  7 ++
 .../postMessage/second-argument-null-in-array.html | 14 ++++
 .../postMessage/second-argument-null-in-array.js   |  5 ++
 .../postMessage/second-argument-null.html          | 14 ++++
 .../postMessage/second-argument-null.js            |  5 ++
 .../postMessage/second-argument-undefined.html     | 14 ++++
 .../postMessage/second-argument-undefined.js       |  5 ++
 .../postMessage/setting-postMessage.html           | 14 ++++
 .../postMessage/setting-postMessage.js             |  3 +
 .../postMessage/structured-clone-imagedata.html    | 18 +++++
 .../postMessage/structured-clone-imagedata.js      |  5 ++
 .../postMessage/structured-clone-message.html      | 38 +++++++++
 .../postMessage/structured-clone-message.js        | 14 ++++
 .../SharedWorkerGlobalScope/name/getting.html      | 17 ++++
 .../SharedWorkerGlobalScope/name/getting.js        |  9 +++
 .../SharedWorkerGlobalScope/name/setting.html      | 15 ++++
 .../SharedWorkerGlobalScope/name/setting.js        |  4 +
 .../SharedWorkerGlobalScope/onconnect.html         | 14 ++++
 .../SharedWorkerGlobalScope/onconnect.js           | 19 +++++
 .../WorkerGlobalScope/close/incoming-message.html  | 18 +++++
 .../WorkerGlobalScope/close/incoming-message.js    |  5 ++
 .../WorkerGlobalScope/close/sending-messages.html  | 18 +++++
 .../WorkerGlobalScope/close/sending-messages.js    |  3 +
 .../WorkerGlobalScope/close/setInterval.html       | 17 ++++
 .../WorkerGlobalScope/close/setInterval.js         | 11 +++
 .../WorkerGlobalScope/close/setTimeout.html        | 17 ++++
 .../WorkerGlobalScope/close/setTimeout.js          |  7 ++
 .../WorkerGlobalScope/location/helper-redirect.py  |  3 +
 .../WorkerGlobalScope/location/members.html        | 22 ++++++
 .../WorkerGlobalScope/location/members.js          |  3 +
 .../location/post-location-members.js              |  8 ++
 .../location/redirect-module.html                  | 20 +++++
 .../location/redirect-sharedworker.html            |  9 +++
 .../WorkerGlobalScope/location/redirect.html       | 28 +++++++
 .../WorkerGlobalScope/location/redirect.js         |  7 ++
 .../location/returns-same-object.any.js            |  5 ++
 .../location/setting-members.html                  | 23 ++++++
 .../WorkerGlobalScope/location/setting-members.js  | 13 ++++
 .../location/worker-separate-file.html             | 28 +++++++
 .../onerror/exception-in-onerror.html              | 91 ++++++++++++++++++++++
 .../WorkerGlobalScope/onerror/handled.html         | 22 ++++++
 .../WorkerGlobalScope/onerror/handled.js           |  8 ++
 .../onerror/message-classic-DOMException.html      |  7 ++
 .../onerror/message-classic-Error.html             |  7 ++
 .../WorkerGlobalScope/onerror/message-helper.js    | 61 +++++++++++++++
 .../onerror/message-module-DOMException.html       |  7 ++
 .../onerror/message-module-Error.html              |  7 ++
 .../WorkerGlobalScope/onerror/not-handled.html     | 28 +++++++
 .../WorkerGlobalScope/onerror/not-handled.js       |  7 ++
 .../onerror/propagate-to-window-onerror.html       | 21 +++++
 .../onerror/propagate-to-window-onerror.js         |  4 +
 .../interfaces/WorkerGlobalScope/onerror/throw.js  | 34 ++++++++
 .../interfaces/WorkerGlobalScope/self.any.js       | 19 +++++
 .../interfaces/WorkerUtils/WindowTimers/001.html   | 14 ++++
 .../interfaces/WorkerUtils/WindowTimers/001.js     |  1 +
 .../interfaces/WorkerUtils/WindowTimers/002.html   | 13 ++++
 .../interfaces/WorkerUtils/WindowTimers/002.js     |  2 +
 .../interfaces/WorkerUtils/WindowTimers/003.html   | 14 ++++
 .../interfaces/WorkerUtils/WindowTimers/003.js     |  1 +
 .../interfaces/WorkerUtils/WindowTimers/004.html   | 13 ++++
 .../interfaces/WorkerUtils/WindowTimers/004.js     |  4 +
 .../interfaces/WorkerUtils/WindowTimers/005.html   | 14 ++++
 .../interfaces/WorkerUtils/WindowTimers/005.js     |  3 +
 .../WorkerUtils/importScripts/001.worker.js        |  7 ++
 .../WorkerUtils/importScripts/002.worker.js        | 11 +++
 .../interfaces/WorkerUtils/importScripts/003.html  | 14 ++++
 .../interfaces/WorkerUtils/importScripts/003.js    |  8 ++
 .../interfaces/WorkerUtils/importScripts/004.html  | 15 ++++
 .../interfaces/WorkerUtils/importScripts/004.js    | 13 ++++
 .../interfaces/WorkerUtils/importScripts/005.html  | 15 ++++
 .../interfaces/WorkerUtils/importScripts/005.js    |  9 +++
 .../interfaces/WorkerUtils/importScripts/006.html  | 17 ++++
 .../interfaces/WorkerUtils/importScripts/006.js    | 11 +++
 .../interfaces/WorkerUtils/importScripts/007.html  | 17 ++++
 .../interfaces/WorkerUtils/importScripts/007.js    |  2 +
 .../interfaces/WorkerUtils/importScripts/008.html  | 14 ++++
 .../interfaces/WorkerUtils/importScripts/008.js    |  3 +
 .../interfaces/WorkerUtils/importScripts/009.html  | 20 +++++
 .../interfaces/WorkerUtils/importScripts/009.js    |  3 +
 .../interfaces/WorkerUtils/importScripts/010.html  | 17 ++++
 .../interfaces/WorkerUtils/importScripts/010.js    | 11 +++
 .../interfaces/WorkerUtils/importScripts/011.html  | 17 ++++
 .../interfaces/WorkerUtils/importScripts/011.js    | 11 +++
 .../interfaces/WorkerUtils/importScripts/012.html  | 17 ++++
 .../interfaces/WorkerUtils/importScripts/012.js    | 11 +++
 .../workers/interfaces/WorkerUtils/importScripts/1 |  1 +
 .../interfaces/WorkerUtils/importScripts/1.headers |  1 +
 .../WorkerUtils/importScripts/blob-url.worker.js   | 40 ++++++++++
 .../WorkerUtils/importScripts/catch.sub.any.js     | 47 +++++++++++
 .../interfaces/WorkerUtils/importScripts/null      |  1 +
 .../WorkerUtils/importScripts/null.headers         |  1 +
 .../report-error-cross-origin.sub.any.js           |  8 ++
 .../importScripts/report-error-helper.js           | 80 +++++++++++++++++++
 ...eport-error-redirect-to-cross-origin.sub.any.js |  9 +++
 .../report-error-same-origin.sub.any.js            |  7 ++
 ...report-error-setTimeout-cross-origin.sub.any.js |  8 ++
 ...-setTimeout-redirect-to-cross-origin.sub.any.js |  9 +++
 .../report-error-setTimeout-same-origin.sub.any.js |  7 ++
 .../interfaces/WorkerUtils/importScripts/undefined |  1 +
 .../WorkerUtils/importScripts/undefined.headers    |  1 +
 .../interfaces/WorkerUtils/navigator/002.html      | 14 ++++
 .../interfaces/WorkerUtils/navigator/002.js        |  1 +
 .../interfaces/WorkerUtils/navigator/003.html      | 14 ++++
 .../interfaces/WorkerUtils/navigator/003.js        |  1 +
 .../interfaces/WorkerUtils/navigator/004.html      | 14 ++++
 .../interfaces/WorkerUtils/navigator/004.js        |  1 +
 .../interfaces/WorkerUtils/navigator/005.html      | 14 ++++
 .../interfaces/WorkerUtils/navigator/005.js        |  1 +
 .../interfaces/WorkerUtils/navigator/006.html      | 14 ++++
 .../interfaces/WorkerUtils/navigator/006.js        |  1 +
 .../interfaces/WorkerUtils/navigator/007.html      | 14 ++++
 .../interfaces/WorkerUtils/navigator/007.js        |  9 +++
 .../interfaces/WorkerUtils/navigator/language.html | 14 ++++
 .../interfaces/WorkerUtils/navigator/language.js   |  1 +
 124 files changed, 1659 insertions(+)
 create mode 100644 testing/web-platform/tests/workers/interfaces/DedicatedWorkerGlobalScope/EventTarget.worker.js
 create mode 100644 testing/web-platform/tests/workers/interfaces/DedicatedWorkerGlobalScope/onmessage.worker.js
 create mode 100644 testing/web-platform/tests/workers/interfaces/DedicatedWorkerGlobalScope/postMessage/event-ports-dedicated.html
 create mode 100644 testing/web-platform/tests/workers/interfaces/DedicatedWorkerGlobalScope/postMessage/event-ports-dedicated.js
 create mode 100644 testing/web-platform/tests/workers/interfaces/DedicatedWorkerGlobalScope/postMessage/imagedata-cloned-canvas-in-array.html
 create mode 100644 testing/web-platform/tests/workers/interfaces/DedicatedWorkerGlobalScope/postMessage/imagedata-cloned-canvas-in-array.js
 create mode 100644 testing/web-platform/tests/workers/interfaces/DedicatedWorkerGlobalScope/postMessage/message-event.html
 create mode 100644 testing/web-platform/tests/workers/interfaces/DedicatedWorkerGlobalScope/postMessage/message-event.js
 create mode 100644 testing/web-platform/tests/workers/interfaces/DedicatedWorkerGlobalScope/postMessage/return-value.worker.js
 create mode 100644 testing/web-platform/tests/workers/interfaces/DedicatedWorkerGlobalScope/postMessage/second-argument-dictionary.html
 create mode 100644 testing/web-platform/tests/workers/interfaces/DedicatedWorkerGlobalScope/postMessage/second-argument-dictionary.js
 create mode 100644 testing/web-platform/tests/workers/interfaces/DedicatedWorkerGlobalScope/postMessage/second-argument-null-in-array.html
 create mode 100644 testing/web-platform/tests/workers/interfaces/DedicatedWorkerGlobalScope/postMessage/second-argument-null-in-array.js
 create mode 100644 testing/web-platform/tests/workers/interfaces/DedicatedWorkerGlobalScope/postMessage/second-argument-null.html
 create mode 100644 testing/web-platform/tests/workers/interfaces/DedicatedWorkerGlobalScope/postMessage/second-argument-null.js
 create mode 100644 testing/web-platform/tests/workers/interfaces/DedicatedWorkerGlobalScope/postMessage/second-argument-undefined.html
 create mode 100644 testing/web-platform/tests/workers/interfaces/DedicatedWorkerGlobalScope/postMessage/second-argument-undefined.js
 create mode 100644 testing/web-platform/tests/workers/interfaces/DedicatedWorkerGlobalScope/postMessage/setting-postMessage.html
 create mode 100644 testing/web-platform/tests/workers/interfaces/DedicatedWorkerGlobalScope/postMessage/setting-postMessage.js
 create mode 100644 testing/web-platform/tests/workers/interfaces/DedicatedWorkerGlobalScope/postMessage/structured-clone-imagedata.html
 create mode 100644 testing/web-platform/tests/workers/interfaces/DedicatedWorkerGlobalScope/postMessage/structured-clone-imagedata.js
 create mode 100644 testing/web-platform/tests/workers/interfaces/DedicatedWorkerGlobalScope/postMessage/structured-clone-message.html
 create mode 100644 testing/web-platform/tests/workers/interfaces/DedicatedWorkerGlobalScope/postMessage/structured-clone-message.js
 create mode 100644 testing/web-platform/tests/workers/interfaces/SharedWorkerGlobalScope/name/getting.html
 create mode 100644 testing/web-platform/tests/workers/interfaces/SharedWorkerGlobalScope/name/getting.js
 create mode 100644 testing/web-platform/tests/workers/interfaces/SharedWorkerGlobalScope/name/setting.html
 create mode 100644 testing/web-platform/tests/workers/interfaces/SharedWorkerGlobalScope/name/setting.js
 create mode 100644 testing/web-platform/tests/workers/interfaces/SharedWorkerGlobalScope/onconnect.html
 create mode 100644 testing/web-platform/tests/workers/interfaces/SharedWorkerGlobalScope/onconnect.js
 create mode 100644 testing/web-platform/tests/workers/interfaces/WorkerGlobalScope/close/incoming-message.html
 create mode 100644 testing/web-platform/tests/workers/interfaces/WorkerGlobalScope/close/incoming-message.js
 create mode 100644 testing/web-platform/tests/workers/interfaces/WorkerGlobalScope/close/sending-messages.html
 create mode 100644 testing/web-platform/tests/workers/interfaces/WorkerGlobalScope/close/sending-messages.js
 create mode 100644 testing/web-platform/tests/workers/interfaces/WorkerGlobalScope/close/setInterval.html
 create mode 100644 testing/web-platform/tests/workers/interfaces/WorkerGlobalScope/close/setInterval.js
 create mode 100644 testing/web-platform/tests/workers/interfaces/WorkerGlobalScope/close/setTimeout.html
 create mode 100644 testing/web-platform/tests/workers/interfaces/WorkerGlobalScope/close/setTimeout.js
 create mode 100644 testing/web-platform/tests/workers/interfaces/WorkerGlobalScope/location/helper-redirect.py
 create mode 100644 testing/web-platform/tests/workers/interfaces/WorkerGlobalScope/location/members.html
 create mode 100644 testing/web-platform/tests/workers/interfaces/WorkerGlobalScope/location/members.js
 create mode 100644 testing/web-platform/tests/workers/interfaces/WorkerGlobalScope/location/post-location-members.js
 create mode 100644 testing/web-platform/tests/workers/interfaces/WorkerGlobalScope/location/redirect-module.html
 create mode 100644 testing/web-platform/tests/workers/interfaces/WorkerGlobalScope/location/redirect-sharedworker.html
 create mode 100644 testing/web-platform/tests/workers/interfaces/WorkerGlobalScope/location/redirect.html
 create mode 100644 testing/web-platform/tests/workers/interfaces/WorkerGlobalScope/location/redirect.js
 create mode 100644 testing/web-platform/tests/workers/interfaces/WorkerGlobalScope/location/returns-same-object.any.js
 create mode 100644 testing/web-platform/tests/workers/interfaces/WorkerGlobalScope/location/setting-members.html
 create mode 100644 testing/web-platform/tests/workers/interfaces/WorkerGlobalScope/location/setting-members.js
 create mode 100644 testing/web-platform/tests/workers/interfaces/WorkerGlobalScope/location/worker-separate-file.html
 create mode 100644 testing/web-platform/tests/workers/interfaces/WorkerGlobalScope/onerror/exception-in-onerror.html
 create mode 100644 testing/web-platform/tests/workers/interfaces/WorkerGlobalScope/onerror/handled.html
 create mode 100644 testing/web-platform/tests/workers/interfaces/WorkerGlobalScope/onerror/handled.js
 create mode 100644 testing/web-platform/tests/workers/interfaces/WorkerGlobalScope/onerror/message-classic-DOMException.html
 create mode 100644 testing/web-platform/tests/workers/interfaces/WorkerGlobalScope/onerror/message-classic-Error.html
 create mode 100644 testing/web-platform/tests/workers/interfaces/WorkerGlobalScope/onerror/message-helper.js
 create mode 100644 testing/web-platform/tests/workers/interfaces/WorkerGlobalScope/onerror/message-module-DOMException.html
 create mode 100644 testing/web-platform/tests/workers/interfaces/WorkerGlobalScope/onerror/message-module-Error.html
 create mode 100644 testing/web-platform/tests/workers/interfaces/WorkerGlobalScope/onerror/not-handled.html
 create mode 100644 testing/web-platform/tests/workers/interfaces/WorkerGlobalScope/onerror/not-handled.js
 create mode 100644 testing/web-platform/tests/workers/interfaces/WorkerGlobalScope/onerror/propagate-to-window-onerror.html
 create mode 100644 testing/web-platform/tests/workers/interfaces/WorkerGlobalScope/onerror/propagate-to-window-onerror.js
 create mode 100644 testing/web-platform/tests/workers/interfaces/WorkerGlobalScope/onerror/throw.js
 create mode 100644 testing/web-platform/tests/workers/interfaces/WorkerGlobalScope/self.any.js
 create mode 100644 testing/web-platform/tests/workers/interfaces/WorkerUtils/WindowTimers/001.html
 create mode 100644 testing/web-platform/tests/workers/interfaces/WorkerUtils/WindowTimers/001.js
 create mode 100644 testing/web-platform/tests/workers/interfaces/WorkerUtils/WindowTimers/002.html
 create mode 100644 testing/web-platform/tests/workers/interfaces/WorkerUtils/WindowTimers/002.js
 create mode 100644 testing/web-platform/tests/workers/interfaces/WorkerUtils/WindowTimers/003.html
 create mode 100644 testing/web-platform/tests/workers/interfaces/WorkerUtils/WindowTimers/003.js
 create mode 100644 testing/web-platform/tests/workers/interfaces/WorkerUtils/WindowTimers/004.html
 create mode 100644 testing/web-platform/tests/workers/interfaces/WorkerUtils/WindowTimers/004.js
 create mode 100644 testing/web-platform/tests/workers/interfaces/WorkerUtils/WindowTimers/005.html
 create mode 100644 testing/web-platform/tests/workers/interfaces/WorkerUtils/WindowTimers/005.js
 create mode 100644 testing/web-platform/tests/workers/interfaces/WorkerUtils/importScripts/001.worker.js
 create mode 100644 testing/web-platform/tests/workers/interfaces/WorkerUtils/importScripts/002.worker.js
 create mode 100644 testing/web-platform/tests/workers/interfaces/WorkerUtils/importScripts/003.html
 create mode 100644 testing/web-platform/tests/workers/interfaces/WorkerUtils/importScripts/003.js
 create mode 100644 testing/web-platform/tests/workers/interfaces/WorkerUtils/importScripts/004.html
 create mode 100644 testing/web-platform/tests/workers/interfaces/WorkerUtils/importScripts/004.js
 create mode 100644 testing/web-platform/tests/workers/interfaces/WorkerUtils/importScripts/005.html
 create mode 100644 testing/web-platform/tests/workers/interfaces/WorkerUtils/importScripts/005.js
 create mode 100644 testing/web-platform/tests/workers/interfaces/WorkerUtils/importScripts/006.html
 create mode 100644 testing/web-platform/tests/workers/interfaces/WorkerUtils/importScripts/006.js
 create mode 100644 testing/web-platform/tests/workers/interfaces/WorkerUtils/importScripts/007.html
 create mode 100644 testing/web-platform/tests/workers/interfaces/WorkerUtils/importScripts/007.js
 create mode 100644 testing/web-platform/tests/workers/interfaces/WorkerUtils/importScripts/008.html
 create mode 100644 testing/web-platform/tests/workers/interfaces/WorkerUtils/importScripts/008.js
 create mode 100644 testing/web-platform/tests/workers/interfaces/WorkerUtils/importScripts/009.html
 create mode 100644 testing/web-platform/tests/workers/interfaces/WorkerUtils/importScripts/009.js
 create mode 100644 testing/web-platform/tests/workers/interfaces/WorkerUtils/importScripts/010.html
 create mode 100644 testing/web-platform/tests/workers/interfaces/WorkerUtils/importScripts/010.js
 create mode 100644 testing/web-platform/tests/workers/interfaces/WorkerUtils/importScripts/011.html
 create mode 100644 testing/web-platform/tests/workers/interfaces/WorkerUtils/importScripts/011.js
 create mode 100644 testing/web-platform/tests/workers/interfaces/WorkerUtils/importScripts/012.html
 create mode 100644 testing/web-platform/tests/workers/interfaces/WorkerUtils/importScripts/012.js
 create mode 100644 testing/web-platform/tests/workers/interfaces/WorkerUtils/importScripts/1
 create mode 100644 testing/web-platform/tests/workers/interfaces/WorkerUtils/importScripts/1.headers
 create mode 100644 testing/web-platform/tests/workers/interfaces/WorkerUtils/importScripts/blob-url.worker.js
 create mode 100644 testing/web-platform/tests/workers/interfaces/WorkerUtils/importScripts/catch.sub.any.js
 create mode 100644 testing/web-platform/tests/workers/interfaces/WorkerUtils/importScripts/null
 create mode 100644 testing/web-platform/tests/workers/interfaces/WorkerUtils/importScripts/null.headers
 create mode 100644 testing/web-platform/tests/workers/interfaces/WorkerUtils/importScripts/report-error-cross-origin.sub.any.js
 create mode 100644 testing/web-platform/tests/workers/interfaces/WorkerUtils/importScripts/report-error-helper.js
 create mode 100644 testing/web-platform/tests/workers/interfaces/WorkerUtils/importScripts/report-error-redirect-to-cross-origin.sub.any.js
 create mode 100644 testing/web-platform/tests/workers/interfaces/WorkerUtils/importScripts/report-error-same-origin.sub.any.js
 create mode 100644 testing/web-platform/tests/workers/interfaces/WorkerUtils/importScripts/report-error-setTimeout-cross-origin.sub.any.js
 create mode 100644 testing/web-platform/tests/workers/interfaces/WorkerUtils/importScripts/report-error-setTimeout-redirect-to-cross-origin.sub.any.js
 create mode 100644 testing/web-platform/tests/workers/interfaces/WorkerUtils/importScripts/report-error-setTimeout-same-origin.sub.any.js
 create mode 100644 testing/web-platform/tests/workers/interfaces/WorkerUtils/importScripts/undefined
 create mode 100644 testing/web-platform/tests/workers/interfaces/WorkerUtils/importScripts/undefined.headers
 create mode 100644 testing/web-platform/tests/workers/interfaces/WorkerUtils/navigator/002.html
 create mode 100644 testing/web-platform/tests/workers/interfaces/WorkerUtils/navigator/002.js
 create mode 100644 testing/web-platform/tests/workers/interfaces/WorkerUtils/navigator/003.html
 create mode 100644 testing/web-platform/tests/workers/interfaces/WorkerUtils/navigator/003.js
 create mode 100644 testing/web-platform/tests/workers/interfaces/WorkerUtils/navigator/004.html
 create mode 100644 testing/web-platform/tests/workers/interfaces/WorkerUtils/navigator/004.js
 create mode 100644 testing/web-platform/tests/workers/interfaces/WorkerUtils/navigator/005.html
 create mode 100644 testing/web-platform/tests/workers/interfaces/WorkerUtils/navigator/005.js
 create mode 100644 testing/web-platform/tests/workers/interfaces/WorkerUtils/navigator/006.html
 create mode 100644 testing/web-platform/tests/workers/interfaces/WorkerUtils/navigator/006.js
 create mode 100644 testing/web-platform/tests/workers/interfaces/WorkerUtils/navigator/007.html
 create mode 100644 testing/web-platform/tests/workers/interfaces/WorkerUtils/navigator/007.js
 create mode 100644 testing/web-platform/tests/workers/interfaces/WorkerUtils/navigator/language.html
 create mode 100644 testing/web-platform/tests/workers/interfaces/WorkerUtils/navigator/language.js

(limited to 'testing/web-platform/tests/workers/interfaces')

diff --git a/testing/web-platform/tests/workers/interfaces/DedicatedWorkerGlobalScope/EventTarget.worker.js b/testing/web-platform/tests/workers/interfaces/DedicatedWorkerGlobalScope/EventTarget.worker.js
new file mode 100644
index 0000000000..954c46c07e
--- /dev/null
+++ b/testing/web-platform/tests/workers/interfaces/DedicatedWorkerGlobalScope/EventTarget.worker.js
@@ -0,0 +1,23 @@
+importScripts("/resources/testharness.js");
+
+test(function(t) {
+    var i = 0;
+    addEventListener("message", function listener(evt) {
+        t.step(function() {
+            ++i;
+            removeEventListener("message", listener, true);
+        });
+    }, true);
+    self.dispatchEvent(new Event("message"));
+    self.dispatchEvent(new Event("message"));
+    assert_equals(i, 1);
+}, "removeEventListener");
+
+test(function() {
+    addEventListener("message", this.step_func(function(evt) {
+        assert_equals(evt.target, self);
+    }), true);
+    self.dispatchEvent(new Event("message"));
+}, "target");
+
+done();
diff --git a/testing/web-platform/tests/workers/interfaces/DedicatedWorkerGlobalScope/onmessage.worker.js b/testing/web-platform/tests/workers/interfaces/DedicatedWorkerGlobalScope/onmessage.worker.js
new file mode 100644
index 0000000000..6f285caac3
--- /dev/null
+++ b/testing/web-platform/tests/workers/interfaces/DedicatedWorkerGlobalScope/onmessage.worker.js
@@ -0,0 +1,40 @@
+importScripts("/resources/testharness.js");
+
+test(function() {
+  self.onmessage = 1;
+  assert_equals(self.onmessage, null,
+                "attribute should return null after being set to a primitive");
+}, "Setting onmessage to 1");
+
+test(function() {
+  var object = {
+    handleEvent: this.unreached_func()
+  };
+  self.onmessage = object;
+  assert_equals(self.onmessage, object,
+                "attribute should return the object it was set to.");
+
+  self.dispatchEvent(new Event("message"));
+}, "Setting onmessage to an object");
+
+test(function() {
+  var triggered = false;
+  var f = function(e) { triggered = true; };
+  self.onmessage = f;
+  assert_equals(self.onmessage, f,
+                "attribute should return the function it was set to.");
+
+  self.dispatchEvent(new Event("message"));
+  assert_true(triggered, "event handler should have been triggered");
+}, "Setting onmessage to a function");
+
+
+test(function() {
+  assert_not_equals(self.onmessage, null,
+                    "attribute should not return null after being set to a function");
+  self.onmessage = 1;
+  assert_equals(self.onmessage, null,
+                "attribute should return null after being set to a primitive");
+}, "Setting onmessage to 1 (again)");
+
+done();
diff --git a/testing/web-platform/tests/workers/interfaces/DedicatedWorkerGlobalScope/postMessage/event-ports-dedicated.html b/testing/web-platform/tests/workers/interfaces/DedicatedWorkerGlobalScope/postMessage/event-ports-dedicated.html
new file mode 100644
index 0000000000..be89478786
--- /dev/null
+++ b/testing/web-platform/tests/workers/interfaces/DedicatedWorkerGlobalScope/postMessage/event-ports-dedicated.html
@@ -0,0 +1,15 @@
+<!doctype html>
+<title>e.ports in dedicated worker</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id="log"></div>
+<script>
+(async_test()).step(function() {
+  var worker = new Worker('event-ports-dedicated.js');
+  worker.postMessage(1);
+  worker.onmessage = this.step_func(function(e) {
+    assert_true(e.data);
+    this.done();
+  });
+});
+</script>
\ No newline at end of file
diff --git a/testing/web-platform/tests/workers/interfaces/DedicatedWorkerGlobalScope/postMessage/event-ports-dedicated.js b/testing/web-platform/tests/workers/interfaces/DedicatedWorkerGlobalScope/postMessage/event-ports-dedicated.js
new file mode 100644
index 0000000000..c5cc9f8d9f
--- /dev/null
+++ b/testing/web-platform/tests/workers/interfaces/DedicatedWorkerGlobalScope/postMessage/event-ports-dedicated.js
@@ -0,0 +1,3 @@
+onmessage = function(e) {
+  postMessage(e.ports instanceof Array && e.ports.length === 0);
+}
\ No newline at end of file
diff --git a/testing/web-platform/tests/workers/interfaces/DedicatedWorkerGlobalScope/postMessage/imagedata-cloned-canvas-in-array.html b/testing/web-platform/tests/workers/interfaces/DedicatedWorkerGlobalScope/postMessage/imagedata-cloned-canvas-in-array.html
new file mode 100644
index 0000000000..7c019a9993
--- /dev/null
+++ b/testing/web-platform/tests/workers/interfaces/DedicatedWorkerGlobalScope/postMessage/imagedata-cloned-canvas-in-array.html
@@ -0,0 +1,22 @@
+<!doctype html>
+<title>posting an imagedata (from a cloned canvas) in an array</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id="log"></div>
+<script>
+(async_test()).step(function() {
+  var worker = new Worker('imagedata-cloned-canvas-in-array.js');
+  var canvas = document.createElement('canvas');
+  var clone = canvas.cloneNode(true);
+  var ctx = clone.getContext('2d');
+  var imagedata = ctx.getImageData(0, 0, 300, 150);
+  worker.postMessage([imagedata]);
+  worker.onmessage = this.step_func(function(e) {
+    var pixeldata = e.data.data;
+    for (var i = 0; i < pixeldata.length; i++) {
+      assert_equals(pixeldata[i], (i % 4 == 0) ? 128 : 0);
+    }
+    this.done();
+  });
+});
+</script>
\ No newline at end of file
diff --git a/testing/web-platform/tests/workers/interfaces/DedicatedWorkerGlobalScope/postMessage/imagedata-cloned-canvas-in-array.js b/testing/web-platform/tests/workers/interfaces/DedicatedWorkerGlobalScope/postMessage/imagedata-cloned-canvas-in-array.js
new file mode 100644
index 0000000000..76eaee366c
--- /dev/null
+++ b/testing/web-platform/tests/workers/interfaces/DedicatedWorkerGlobalScope/postMessage/imagedata-cloned-canvas-in-array.js
@@ -0,0 +1,10 @@
+onmessage = function(e) {
+  function processPixels(imagedata) {
+    var pixeldata = imagedata.data;
+    for (var i = 0; i < pixeldata.length; i = i+4) {
+      pixeldata[i] = 128;
+    }
+    postMessage(imagedata);
+  }
+  processPixels(e.data[0]);
+}
\ No newline at end of file
diff --git a/testing/web-platform/tests/workers/interfaces/DedicatedWorkerGlobalScope/postMessage/message-event.html b/testing/web-platform/tests/workers/interfaces/DedicatedWorkerGlobalScope/postMessage/message-event.html
new file mode 100644
index 0000000000..91ec632685
--- /dev/null
+++ b/testing/web-platform/tests/workers/interfaces/DedicatedWorkerGlobalScope/postMessage/message-event.html
@@ -0,0 +1,23 @@
+<!DOCTYPE html>
+<meta charset=utf-8>
+<title>'message' event properties</title>
+<link rel=help href="http://www.whatwg.org/html/#dom-dedicatedworkerglobalscope-postmessage">
+<script src=/resources/testharness.js></script>
+<script src=/resources/testharnessreport.js></script>
+<div id=log></div>
+<script>
+async_test("Properties of the 'message' event").step(function() {
+  var worker = new Worker("message-event.js");
+  worker.onmessage = this.step_func_done(function (evt) {
+    assert_class_string(evt, "MessageEvent");
+    assert_equals(evt.type, "message");
+    assert_false(evt.bubbles, "bubbles should be false");
+    assert_false(evt.cancelable, "cancelable should be false");
+    assert_equals(evt.data, "test");
+    assert_equals(evt.origin, "", "origin");
+    assert_equals(evt.lastEventId, "", "lastEventId");
+    assert_equals(evt.source, null, "source");
+    assert_array_equals(evt.ports, [], "ports");
+  });
+});
+</script>
diff --git a/testing/web-platform/tests/workers/interfaces/DedicatedWorkerGlobalScope/postMessage/message-event.js b/testing/web-platform/tests/workers/interfaces/DedicatedWorkerGlobalScope/postMessage/message-event.js
new file mode 100644
index 0000000000..54a250005e
--- /dev/null
+++ b/testing/web-platform/tests/workers/interfaces/DedicatedWorkerGlobalScope/postMessage/message-event.js
@@ -0,0 +1 @@
+postMessage("test");
diff --git a/testing/web-platform/tests/workers/interfaces/DedicatedWorkerGlobalScope/postMessage/return-value.worker.js b/testing/web-platform/tests/workers/interfaces/DedicatedWorkerGlobalScope/postMessage/return-value.worker.js
new file mode 100644
index 0000000000..521251699a
--- /dev/null
+++ b/testing/web-platform/tests/workers/interfaces/DedicatedWorkerGlobalScope/postMessage/return-value.worker.js
@@ -0,0 +1,8 @@
+importScripts("/resources/testharness.js");
+
+test(function() {
+  var rv = postMessage(1);
+  assert_equals(rv, undefined);
+}, "return value of postMessage");
+
+done();
diff --git a/testing/web-platform/tests/workers/interfaces/DedicatedWorkerGlobalScope/postMessage/second-argument-dictionary.html b/testing/web-platform/tests/workers/interfaces/DedicatedWorkerGlobalScope/postMessage/second-argument-dictionary.html
new file mode 100644
index 0000000000..1749644908
--- /dev/null
+++ b/testing/web-platform/tests/workers/interfaces/DedicatedWorkerGlobalScope/postMessage/second-argument-dictionary.html
@@ -0,0 +1,16 @@
+<!doctype html>
+<title>Using dictionary as postMessage's second argument</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id="log"></div>
+<script>
+(async_test()).step(function() {
+  var worker = new Worker('second-argument-dictionary.js');
+  var ab = new ArrayBuffer(1);
+  worker.postMessage(ab, {transfer: [ab]});
+  worker.onmessage = this.step_func(function(e) {
+    assert_equals(e.data.byteLength, 1);
+    this.done();
+  });
+});
+</script>
\ No newline at end of file
diff --git a/testing/web-platform/tests/workers/interfaces/DedicatedWorkerGlobalScope/postMessage/second-argument-dictionary.js b/testing/web-platform/tests/workers/interfaces/DedicatedWorkerGlobalScope/postMessage/second-argument-dictionary.js
new file mode 100644
index 0000000000..0cb80f8fae
--- /dev/null
+++ b/testing/web-platform/tests/workers/interfaces/DedicatedWorkerGlobalScope/postMessage/second-argument-dictionary.js
@@ -0,0 +1,7 @@
+onmessage = (event) => {
+  try {
+    postMessage(event.data, {transfer: [event.data]});
+  } catch(e) {
+    postMessage(''+e);
+  }
+}
\ No newline at end of file
diff --git a/testing/web-platform/tests/workers/interfaces/DedicatedWorkerGlobalScope/postMessage/second-argument-null-in-array.html b/testing/web-platform/tests/workers/interfaces/DedicatedWorkerGlobalScope/postMessage/second-argument-null-in-array.html
new file mode 100644
index 0000000000..8db06b4116
--- /dev/null
+++ b/testing/web-platform/tests/workers/interfaces/DedicatedWorkerGlobalScope/postMessage/second-argument-null-in-array.html
@@ -0,0 +1,14 @@
+<!doctype html>
+<title>Using [null] in postMessage's second argument</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id="log"></div>
+<script>
+(async_test()).step(function() {
+  var worker = new Worker('second-argument-null-in-array.js');
+  worker.onmessage = this.step_func(function(e) {
+    assert_true(e.data);
+    this.done();
+  });
+});
+</script>
\ No newline at end of file
diff --git a/testing/web-platform/tests/workers/interfaces/DedicatedWorkerGlobalScope/postMessage/second-argument-null-in-array.js b/testing/web-platform/tests/workers/interfaces/DedicatedWorkerGlobalScope/postMessage/second-argument-null-in-array.js
new file mode 100644
index 0000000000..95a094234b
--- /dev/null
+++ b/testing/web-platform/tests/workers/interfaces/DedicatedWorkerGlobalScope/postMessage/second-argument-null-in-array.js
@@ -0,0 +1,5 @@
+try {
+  postMessage(false, [null]);
+} catch(e) {
+  postMessage(e instanceof TypeError);
+}
\ No newline at end of file
diff --git a/testing/web-platform/tests/workers/interfaces/DedicatedWorkerGlobalScope/postMessage/second-argument-null.html b/testing/web-platform/tests/workers/interfaces/DedicatedWorkerGlobalScope/postMessage/second-argument-null.html
new file mode 100644
index 0000000000..68d9caabc5
--- /dev/null
+++ b/testing/web-platform/tests/workers/interfaces/DedicatedWorkerGlobalScope/postMessage/second-argument-null.html
@@ -0,0 +1,14 @@
+<!doctype html>
+<title>Using null in postMessage's second argument</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id="log"></div>
+<script>
+(async_test()).step(function() {
+  var worker = new Worker('second-argument-null.js');
+  worker.onmessage = this.step_func(function(e) {
+    assert_equals(1, e.data);
+    this.done();
+  });
+});
+</script>
\ No newline at end of file
diff --git a/testing/web-platform/tests/workers/interfaces/DedicatedWorkerGlobalScope/postMessage/second-argument-null.js b/testing/web-platform/tests/workers/interfaces/DedicatedWorkerGlobalScope/postMessage/second-argument-null.js
new file mode 100644
index 0000000000..6f6f9e799f
--- /dev/null
+++ b/testing/web-platform/tests/workers/interfaces/DedicatedWorkerGlobalScope/postMessage/second-argument-null.js
@@ -0,0 +1,5 @@
+try {
+  postMessage(1, null);
+} catch(e) {
+  postMessage(e instanceof TypeError);
+}
\ No newline at end of file
diff --git a/testing/web-platform/tests/workers/interfaces/DedicatedWorkerGlobalScope/postMessage/second-argument-undefined.html b/testing/web-platform/tests/workers/interfaces/DedicatedWorkerGlobalScope/postMessage/second-argument-undefined.html
new file mode 100644
index 0000000000..c7dcb3c5c0
--- /dev/null
+++ b/testing/web-platform/tests/workers/interfaces/DedicatedWorkerGlobalScope/postMessage/second-argument-undefined.html
@@ -0,0 +1,14 @@
+<!doctype html>
+<title>Using undefined in postMessage's second argument</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id="log"></div>
+<script>
+(async_test()).step(function() {
+  var worker = new Worker('second-argument-undefined.js');
+  worker.onmessage = this.step_func(function(e) {
+    assert_equals(e.data, 1);
+    this.done();
+  });
+});
+</script>
\ No newline at end of file
diff --git a/testing/web-platform/tests/workers/interfaces/DedicatedWorkerGlobalScope/postMessage/second-argument-undefined.js b/testing/web-platform/tests/workers/interfaces/DedicatedWorkerGlobalScope/postMessage/second-argument-undefined.js
new file mode 100644
index 0000000000..6f11443c4a
--- /dev/null
+++ b/testing/web-platform/tests/workers/interfaces/DedicatedWorkerGlobalScope/postMessage/second-argument-undefined.js
@@ -0,0 +1,5 @@
+try {
+  postMessage(1, undefined);
+} catch(e) {
+  postMessage(''+e);
+}
\ No newline at end of file
diff --git a/testing/web-platform/tests/workers/interfaces/DedicatedWorkerGlobalScope/postMessage/setting-postMessage.html b/testing/web-platform/tests/workers/interfaces/DedicatedWorkerGlobalScope/postMessage/setting-postMessage.html
new file mode 100644
index 0000000000..5b3e014e1e
--- /dev/null
+++ b/testing/web-platform/tests/workers/interfaces/DedicatedWorkerGlobalScope/postMessage/setting-postMessage.html
@@ -0,0 +1,14 @@
+<!doctype html>
+<title>setting postMessage</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id="log"></div>
+<script>
+(async_test()).step(function() {
+  var worker = new Worker('setting-postMessage.js');
+  worker.onmessage = this.step_func(function(e) {
+    assert_true(e.data);
+    this.done();
+  });
+});
+</script>
\ No newline at end of file
diff --git a/testing/web-platform/tests/workers/interfaces/DedicatedWorkerGlobalScope/postMessage/setting-postMessage.js b/testing/web-platform/tests/workers/interfaces/DedicatedWorkerGlobalScope/postMessage/setting-postMessage.js
new file mode 100644
index 0000000000..5426ebde0d
--- /dev/null
+++ b/testing/web-platform/tests/workers/interfaces/DedicatedWorkerGlobalScope/postMessage/setting-postMessage.js
@@ -0,0 +1,3 @@
+var x = postMessage;
+postMessage = 1;
+x(postMessage == 1);
\ No newline at end of file
diff --git a/testing/web-platform/tests/workers/interfaces/DedicatedWorkerGlobalScope/postMessage/structured-clone-imagedata.html b/testing/web-platform/tests/workers/interfaces/DedicatedWorkerGlobalScope/postMessage/structured-clone-imagedata.html
new file mode 100644
index 0000000000..c7fbb0f956
--- /dev/null
+++ b/testing/web-platform/tests/workers/interfaces/DedicatedWorkerGlobalScope/postMessage/structured-clone-imagedata.html
@@ -0,0 +1,18 @@
+<!doctype html>
+<title>structured clone of ImageData</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id="log"></div>
+<script>
+(async_test()).step(function() {
+  var worker = new Worker('structured-clone-imagedata.js');
+  var ctx = document.createElement('canvas').getContext('2d');
+  var imagedata = ctx.getImageData(0, 0, 300, 150);
+  worker.postMessage(imagedata);
+  worker.onmessage = this.step_func(function(e) {
+    assert_equals(''+e.data, '[object ImageData]');
+    assert_equals(e.data.data[0], 128);
+    this.done();
+  });
+});
+</script>
\ No newline at end of file
diff --git a/testing/web-platform/tests/workers/interfaces/DedicatedWorkerGlobalScope/postMessage/structured-clone-imagedata.js b/testing/web-platform/tests/workers/interfaces/DedicatedWorkerGlobalScope/postMessage/structured-clone-imagedata.js
new file mode 100644
index 0000000000..04cd7eea5b
--- /dev/null
+++ b/testing/web-platform/tests/workers/interfaces/DedicatedWorkerGlobalScope/postMessage/structured-clone-imagedata.js
@@ -0,0 +1,5 @@
+onmessage = function(e) {
+  var imagedata = e.data;
+  imagedata.data[0] = 128;
+  postMessage(imagedata);
+}
\ No newline at end of file
diff --git a/testing/web-platform/tests/workers/interfaces/DedicatedWorkerGlobalScope/postMessage/structured-clone-message.html b/testing/web-platform/tests/workers/interfaces/DedicatedWorkerGlobalScope/postMessage/structured-clone-message.html
new file mode 100644
index 0000000000..edf4fb7e0e
--- /dev/null
+++ b/testing/web-platform/tests/workers/interfaces/DedicatedWorkerGlobalScope/postMessage/structured-clone-message.html
@@ -0,0 +1,38 @@
+<!doctype html>
+<title>structured clone of message</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id="log"></div>
+<script>
+var wrapper_test = async_test();
+var tests = [
+      {test:async_test('undefined'), check:function(e) { assert_equals(e.data, undefined); }},
+      {test:async_test('null'), check:function(e) { assert_equals(e.data, null); }},
+      {test:async_test('false'), check:function(e) { assert_false(e.data); }},
+      {test:async_test('true'), check:function(e) { assert_true(e.data); }},
+      {test:async_test('1'), check:function(e) { assert_equals(e.data, 1); }},
+      {test:async_test('NaN'), check:function(e) { assert_equals(e.data, NaN); }},
+      {test:async_test('Infinity'), check:function(e) { assert_equals(e.data, Infinity); }},
+      {test:async_test('string'), check:function(e) { assert_equals(e.data, 'foo'); }},
+      {test:async_test('date'), check:function(e) { assert_equals(e.data instanceof Date, true); }},
+      {test:async_test('regexp'), check:function(e) { assert_equals('' + e.data, '/foo/'); assert_equals(e.data instanceof RegExp, true, 'e.data instanceof RegExp'); }},
+      {test:async_test('self'), check:function(e) { assert_equals(e.data, null); }},
+      {test:async_test('array'), check:function(e) { assert_array_equals(e.data, [undefined, null, false, true, 1, NaN, Infinity, 'foo', null, null]); }},
+      {test:async_test('object'), check:function(e) { assert_object_equals(e.data, {a:undefined, b:null, c:false, d:true, e:1, f:NaN, g:Infinity, h:'foo', k:null, n:null}); }},
+      {test:async_test('error'), check:function(e) { assert_equals(e.data, null, 'new Error()'); }},
+      {test:wrapper_test, check:function(e) { assert_unreached(); }}
+];
+// make wrapper_test pass after 500ms
+setTimeout(tests[tests.length-1].test.step_func(function() {
+  this.done();
+}), 500);
+
+wrapper_test.step(function() {
+  var worker = new Worker('structured-clone-message.js');
+  var i = 0;
+  worker.onmessage = function(e) {
+    tests[i].test.step(function() { tests[i].check(e); this.done(); });
+    i++;
+  };
+});
+</script>
\ No newline at end of file
diff --git a/testing/web-platform/tests/workers/interfaces/DedicatedWorkerGlobalScope/postMessage/structured-clone-message.js b/testing/web-platform/tests/workers/interfaces/DedicatedWorkerGlobalScope/postMessage/structured-clone-message.js
new file mode 100644
index 0000000000..db456e1fba
--- /dev/null
+++ b/testing/web-platform/tests/workers/interfaces/DedicatedWorkerGlobalScope/postMessage/structured-clone-message.js
@@ -0,0 +1,14 @@
+var err = new Error('foo');
+var date = new Date();
+// commented out bits are either tested elsewhere or not supported yet. or uncloneable.
+var tests = [undefined, null, false, true, 1, NaN, Infinity, 'foo', date, /foo/, /* ImageData, File, FileData, FileList,*/ null/*self*/,
+              [undefined, null, false, true, 1, NaN, Infinity, 'foo', /*date, /foo/,*/ null/*self*/, /*[], {},*/ null/*err*/],
+              {a:undefined, b:null, c:false, d:true, e:1, f:NaN, g:Infinity, h:'foo', /*i:date, j:/foo/,*/ k:null/*self*/, /*l:[], m:{},*/ n:null/*err*/},
+            null/*err*/];
+for (var i = 0; i < tests.length; ++i) {
+  try {
+    postMessage(tests[i]);
+  } catch(e) {
+    postMessage(''+e);
+  }
+}
\ No newline at end of file
diff --git a/testing/web-platform/tests/workers/interfaces/SharedWorkerGlobalScope/name/getting.html b/testing/web-platform/tests/workers/interfaces/SharedWorkerGlobalScope/name/getting.html
new file mode 100644
index 0000000000..c3a52d12e8
--- /dev/null
+++ b/testing/web-platform/tests/workers/interfaces/SharedWorkerGlobalScope/name/getting.html
@@ -0,0 +1,17 @@
+<!doctype html>
+<title>getting name</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id="log"></div>
+<script>
+var tests = [['getting.js#1', ''], ['getting.js#2', 'a'], ['getting.js#3', -0]];
+tests.forEach(function(t) {
+  async_test(function() {
+    var w = new SharedWorker(t[0], t[1]);
+    w.port.onmessage = this.step_func(function(e) {
+      assert_true(e.data);
+      this.done();
+    });
+  });
+});
+</script>
diff --git a/testing/web-platform/tests/workers/interfaces/SharedWorkerGlobalScope/name/getting.js b/testing/web-platform/tests/workers/interfaces/SharedWorkerGlobalScope/name/getting.js
new file mode 100644
index 0000000000..acf89ca6f6
--- /dev/null
+++ b/testing/web-platform/tests/workers/interfaces/SharedWorkerGlobalScope/name/getting.js
@@ -0,0 +1,9 @@
+addEventListener('connect', function(e) {
+  var passed;
+  switch (location.hash) {
+    case '#1': passed = name == ''; break;
+    case '#2': passed = name == 'a'; break;
+    case '#3': passed = name == '0'; break;
+  }
+  e.ports[0].postMessage(passed);
+}, false);
diff --git a/testing/web-platform/tests/workers/interfaces/SharedWorkerGlobalScope/name/setting.html b/testing/web-platform/tests/workers/interfaces/SharedWorkerGlobalScope/name/setting.html
new file mode 100644
index 0000000000..ddd8569710
--- /dev/null
+++ b/testing/web-platform/tests/workers/interfaces/SharedWorkerGlobalScope/name/setting.html
@@ -0,0 +1,15 @@
+<!doctype html>
+<title>setting name</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id="log"></div>
+<script>
+async_test(function() {
+  var w1 = new SharedWorker('setting.js#1', 'x');
+  w1.port.addEventListener('message', this.step_func(function(e) {
+    assert_equals(e.data, 1);
+    this.done();
+  }), false);
+  w1.port.start();
+});
+</script>
diff --git a/testing/web-platform/tests/workers/interfaces/SharedWorkerGlobalScope/name/setting.js b/testing/web-platform/tests/workers/interfaces/SharedWorkerGlobalScope/name/setting.js
new file mode 100644
index 0000000000..c705e9c40a
--- /dev/null
+++ b/testing/web-platform/tests/workers/interfaces/SharedWorkerGlobalScope/name/setting.js
@@ -0,0 +1,4 @@
+addEventListener('connect', function(e) {
+  name = 1;
+  e.ports[0].postMessage(name);
+}, false);
diff --git a/testing/web-platform/tests/workers/interfaces/SharedWorkerGlobalScope/onconnect.html b/testing/web-platform/tests/workers/interfaces/SharedWorkerGlobalScope/onconnect.html
new file mode 100644
index 0000000000..8a0f103d40
--- /dev/null
+++ b/testing/web-platform/tests/workers/interfaces/SharedWorkerGlobalScope/onconnect.html
@@ -0,0 +1,14 @@
+<!doctype html>
+<title>onconnect</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id="log"></div>
+<script>
+async_test(function() {
+  var w1 = new SharedWorker('onconnect.js', '');
+  w1.port.addEventListener('message', this.step_func(function(e) {
+    assert_array_equals(e.data, ['null', 'null', 'function', '']);
+  }), false);
+  w1.port.start();
+});
+</script>
diff --git a/testing/web-platform/tests/workers/interfaces/SharedWorkerGlobalScope/onconnect.js b/testing/web-platform/tests/workers/interfaces/SharedWorkerGlobalScope/onconnect.js
new file mode 100644
index 0000000000..34a2be51fc
--- /dev/null
+++ b/testing/web-platform/tests/workers/interfaces/SharedWorkerGlobalScope/onconnect.js
@@ -0,0 +1,19 @@
+var results = [];
+try {
+  self.onconnect = 1;
+  results.push(String(onconnect));
+} catch(e) {
+  results.push(''+e);
+}
+try {
+  self.onconnect = {handleEvent:function(){}};
+  results.push(String(onconnect));
+} catch(e) {
+  results.push(''+e);
+}
+var f = function(e) {
+  results.push(e.data);
+  e.ports[0].postMessage(results);
+};
+onconnect = f;
+results.push(typeof onconnect);
diff --git a/testing/web-platform/tests/workers/interfaces/WorkerGlobalScope/close/incoming-message.html b/testing/web-platform/tests/workers/interfaces/WorkerGlobalScope/close/incoming-message.html
new file mode 100644
index 0000000000..0905d07661
--- /dev/null
+++ b/testing/web-platform/tests/workers/interfaces/WorkerGlobalScope/close/incoming-message.html
@@ -0,0 +1,18 @@
+<!doctype html>
+<title>close() and incoming message</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id="log"></div>
+<script>
+setup({ single_test: true });
+
+var worker = new Worker('incoming-message.js');
+worker.onmessage = function(e) {
+  assert_unreached("Got message");
+};
+worker.onerror = function(e) {
+  assert_unreached("Got error");
+};
+worker.postMessage(1);
+setTimeout(done, 2000);
+</script>
\ No newline at end of file
diff --git a/testing/web-platform/tests/workers/interfaces/WorkerGlobalScope/close/incoming-message.js b/testing/web-platform/tests/workers/interfaces/WorkerGlobalScope/close/incoming-message.js
new file mode 100644
index 0000000000..b4f7e7fc05
--- /dev/null
+++ b/testing/web-platform/tests/workers/interfaces/WorkerGlobalScope/close/incoming-message.js
@@ -0,0 +1,5 @@
+onmessage = function(e) {
+  postMessage(1);
+  throw new Error();
+}
+close();
\ No newline at end of file
diff --git a/testing/web-platform/tests/workers/interfaces/WorkerGlobalScope/close/sending-messages.html b/testing/web-platform/tests/workers/interfaces/WorkerGlobalScope/close/sending-messages.html
new file mode 100644
index 0000000000..da7da66d25
--- /dev/null
+++ b/testing/web-platform/tests/workers/interfaces/WorkerGlobalScope/close/sending-messages.html
@@ -0,0 +1,18 @@
+<!doctype html>
+<title>close() and sending messages</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id="log"></div>
+<script>
+async_test(function() {
+  var worker = new Worker('sending-messages.js');
+  var i = 0;
+  worker.onmessage = this.step_func(function(e) {
+    i++;
+    assert_equals(e.data, i);
+    if (i == 2) {
+      this.done();
+    }
+  });
+});
+</script>
\ No newline at end of file
diff --git a/testing/web-platform/tests/workers/interfaces/WorkerGlobalScope/close/sending-messages.js b/testing/web-platform/tests/workers/interfaces/WorkerGlobalScope/close/sending-messages.js
new file mode 100644
index 0000000000..2e0a898288
--- /dev/null
+++ b/testing/web-platform/tests/workers/interfaces/WorkerGlobalScope/close/sending-messages.js
@@ -0,0 +1,3 @@
+postMessage(1);
+close();
+postMessage(2);
\ No newline at end of file
diff --git a/testing/web-platform/tests/workers/interfaces/WorkerGlobalScope/close/setInterval.html b/testing/web-platform/tests/workers/interfaces/WorkerGlobalScope/close/setInterval.html
new file mode 100644
index 0000000000..2f0ba176d4
--- /dev/null
+++ b/testing/web-platform/tests/workers/interfaces/WorkerGlobalScope/close/setInterval.html
@@ -0,0 +1,17 @@
+<!doctype html>
+<title>close() and setInterval</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id="log"></div>
+<script>
+setup({ single_test: true });
+
+var worker = new Worker('setInterval.js');
+worker.onmessage = function(e) {
+  assert_unreached("Got message");
+};
+worker.onerror = function(e) {
+  assert_unreached("Got error");
+};
+setTimeout(done, 2000);
+</script>
\ No newline at end of file
diff --git a/testing/web-platform/tests/workers/interfaces/WorkerGlobalScope/close/setInterval.js b/testing/web-platform/tests/workers/interfaces/WorkerGlobalScope/close/setInterval.js
new file mode 100644
index 0000000000..d165d20eab
--- /dev/null
+++ b/testing/web-platform/tests/workers/interfaces/WorkerGlobalScope/close/setInterval.js
@@ -0,0 +1,11 @@
+var interval1 = setInterval(function() {
+  clearInterval(interval1);
+  postMessage(1);
+  throw new Error();
+}, 10);
+close();
+var interval2 = setInterval(function() {
+  clearInterval(interval2);
+  postMessage(1);
+  throw new Error();
+}, 10);
\ No newline at end of file
diff --git a/testing/web-platform/tests/workers/interfaces/WorkerGlobalScope/close/setTimeout.html b/testing/web-platform/tests/workers/interfaces/WorkerGlobalScope/close/setTimeout.html
new file mode 100644
index 0000000000..2bddc0947f
--- /dev/null
+++ b/testing/web-platform/tests/workers/interfaces/WorkerGlobalScope/close/setTimeout.html
@@ -0,0 +1,17 @@
+<!doctype html>
+<title>close() and setTimeout</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id="log"></div>
+<script>
+setup({ single_test: true });
+
+var worker = new Worker('setTimeout.js');
+worker.onmessage = function(e) {
+  assert_unreached("Got message");
+};
+worker.onerror = function(e) {
+  assert_unreached("Got error");
+};
+setTimeout(done, 2000);
+</script>
\ No newline at end of file
diff --git a/testing/web-platform/tests/workers/interfaces/WorkerGlobalScope/close/setTimeout.js b/testing/web-platform/tests/workers/interfaces/WorkerGlobalScope/close/setTimeout.js
new file mode 100644
index 0000000000..55eecb0557
--- /dev/null
+++ b/testing/web-platform/tests/workers/interfaces/WorkerGlobalScope/close/setTimeout.js
@@ -0,0 +1,7 @@
+function x() {
+  postMessage(1);
+  throw new Error();
+}
+setTimeout(x, 0);
+close();
+setTimeout(x, 0);
\ No newline at end of file
diff --git a/testing/web-platform/tests/workers/interfaces/WorkerGlobalScope/location/helper-redirect.py b/testing/web-platform/tests/workers/interfaces/WorkerGlobalScope/location/helper-redirect.py
new file mode 100644
index 0000000000..c8cd354348
--- /dev/null
+++ b/testing/web-platform/tests/workers/interfaces/WorkerGlobalScope/location/helper-redirect.py
@@ -0,0 +1,3 @@
+def main(request, response):
+    response.status = 302
+    response.headers.append(b"Location", b"post-location-members.js?a")
diff --git a/testing/web-platform/tests/workers/interfaces/WorkerGlobalScope/location/members.html b/testing/web-platform/tests/workers/interfaces/WorkerGlobalScope/location/members.html
new file mode 100644
index 0000000000..3da6b7484d
--- /dev/null
+++ b/testing/web-platform/tests/workers/interfaces/WorkerGlobalScope/location/members.html
@@ -0,0 +1,22 @@
+<!doctype html>
+<title>members of WorkerLocation</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id="log"></div>
+<script>
+async_test(function() {
+  var worker = new Worker('members.js');
+  worker.onmessage = this.step_func(function(e) {
+    assert_equals(e.data[0], null);
+    assert_equals(e.data[1], location.href.replace('.html', '.js'), 'href');
+    assert_equals(e.data[2], location.protocol, 'protocol');
+    assert_equals(e.data[3], location.host, 'host');
+    assert_equals(e.data[4], location.hostname, 'hostname');
+    assert_equals(e.data[5], location.port, 'port');
+    assert_equals(e.data[6], location.pathname.replace('.html', '.js'), 'pathname');
+    assert_equals(e.data[7], location.search, 'search');
+    assert_equals(e.data[8], '', 'hash');
+    this.done();
+  });
+});
+</script>
\ No newline at end of file
diff --git a/testing/web-platform/tests/workers/interfaces/WorkerGlobalScope/location/members.js b/testing/web-platform/tests/workers/interfaces/WorkerGlobalScope/location/members.js
new file mode 100644
index 0000000000..37235eac83
--- /dev/null
+++ b/testing/web-platform/tests/workers/interfaces/WorkerGlobalScope/location/members.js
@@ -0,0 +1,3 @@
+postMessage([null, location.href, location.protocol, location.host,
+             location.hostname, location.port, location.pathname,
+             location.search, location.hash]);
\ No newline at end of file
diff --git a/testing/web-platform/tests/workers/interfaces/WorkerGlobalScope/location/post-location-members.js b/testing/web-platform/tests/workers/interfaces/WorkerGlobalScope/location/post-location-members.js
new file mode 100644
index 0000000000..e850b76b6e
--- /dev/null
+++ b/testing/web-platform/tests/workers/interfaces/WorkerGlobalScope/location/post-location-members.js
@@ -0,0 +1,8 @@
+postMessage([location.href,
+             location.protocol,
+             location.host,
+             location.hostname,
+             location.port,
+             location.pathname,
+             location.search,
+             location.hash]);
\ No newline at end of file
diff --git a/testing/web-platform/tests/workers/interfaces/WorkerGlobalScope/location/redirect-module.html b/testing/web-platform/tests/workers/interfaces/WorkerGlobalScope/location/redirect-module.html
new file mode 100644
index 0000000000..b1a14be8f7
--- /dev/null
+++ b/testing/web-platform/tests/workers/interfaces/WorkerGlobalScope/location/redirect-module.html
@@ -0,0 +1,20 @@
+<!doctype html>
+<title>WorkerLocation with redirects: module dedicated workers</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id="log"></div>
+<script>
+async_test(function() {
+  var worker = new Worker('helper-redirect.py?fail', {type: 'module'});
+  worker.onmessage = this.step_func_done(function(e) {
+    assert_equals(e.data[0], location.href.replace(/\/[^\/]+$/, '/post-location-members.js?a'));
+    assert_equals(e.data[1], location.protocol);
+    assert_equals(e.data[2], location.host);
+    assert_equals(e.data[3], location.hostname);
+    assert_equals(e.data[4], location.port);
+    assert_equals(e.data[5], location.pathname.replace(/\/[^\/]+$/, '/post-location-members.js'));
+    assert_equals(e.data[6], '?a');
+    assert_equals(e.data[7], '');
+  });
+});
+</script>
diff --git a/testing/web-platform/tests/workers/interfaces/WorkerGlobalScope/location/redirect-sharedworker.html b/testing/web-platform/tests/workers/interfaces/WorkerGlobalScope/location/redirect-sharedworker.html
new file mode 100644
index 0000000000..978a99ac8c
--- /dev/null
+++ b/testing/web-platform/tests/workers/interfaces/WorkerGlobalScope/location/redirect-sharedworker.html
@@ -0,0 +1,9 @@
+<!doctype html>
+<title>WorkerLocation with redirects: classic shared workers</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id="log"></div>
+<script>
+fetch_tests_from_worker(
+    new SharedWorker('/common/redirect.py?location=/workers/interfaces/WorkerGlobalScope/location/redirect.js?a'));
+</script>
diff --git a/testing/web-platform/tests/workers/interfaces/WorkerGlobalScope/location/redirect.html b/testing/web-platform/tests/workers/interfaces/WorkerGlobalScope/location/redirect.html
new file mode 100644
index 0000000000..98a0e54760
--- /dev/null
+++ b/testing/web-platform/tests/workers/interfaces/WorkerGlobalScope/location/redirect.html
@@ -0,0 +1,28 @@
+<!--
+/*
+-->
+<!doctype html>
+<title>WorkerLocation with redirects: classic dedicated workers</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id="log"></div>
+<script>
+async_test(function() {
+  var worker = new Worker('helper-redirect.py?fail');
+  worker.onmessage = this.step_func_done(function(e) {
+    assert_equals(e.data[0], location.href.replace(/\/[^\/]+$/, '/post-location-members.js?a'));
+    assert_equals(e.data[1], location.protocol);
+    assert_equals(e.data[2], location.host);
+    assert_equals(e.data[3], location.hostname);
+    assert_equals(e.data[4], location.port);
+    assert_equals(e.data[5], location.pathname.replace(/\/[^\/]+$/, '/post-location-members.js'));
+    assert_equals(e.data[6], '?a');
+    assert_equals(e.data[7], '');
+  });
+});
+</script>
+<!--
+*/
+//-->
+
+
diff --git a/testing/web-platform/tests/workers/interfaces/WorkerGlobalScope/location/redirect.js b/testing/web-platform/tests/workers/interfaces/WorkerGlobalScope/location/redirect.js
new file mode 100644
index 0000000000..2db48544a2
--- /dev/null
+++ b/testing/web-platform/tests/workers/interfaces/WorkerGlobalScope/location/redirect.js
@@ -0,0 +1,7 @@
+importScripts('/resources/testharness.js');
+test(t => {
+    assert_equals(location.pathname, '/workers/interfaces/WorkerGlobalScope/location/redirect.js');
+    assert_equals(location.search, '?a');
+    assert_equals(location.hash, '');
+});
+done();
diff --git a/testing/web-platform/tests/workers/interfaces/WorkerGlobalScope/location/returns-same-object.any.js b/testing/web-platform/tests/workers/interfaces/WorkerGlobalScope/location/returns-same-object.any.js
new file mode 100644
index 0000000000..dd3560f040
--- /dev/null
+++ b/testing/web-platform/tests/workers/interfaces/WorkerGlobalScope/location/returns-same-object.any.js
@@ -0,0 +1,5 @@
+// META: global=worker
+
+test(function() {
+  assert_equals(location, location);
+}, 'location === location');
diff --git a/testing/web-platform/tests/workers/interfaces/WorkerGlobalScope/location/setting-members.html b/testing/web-platform/tests/workers/interfaces/WorkerGlobalScope/location/setting-members.html
new file mode 100644
index 0000000000..7ea79b6897
--- /dev/null
+++ b/testing/web-platform/tests/workers/interfaces/WorkerGlobalScope/location/setting-members.html
@@ -0,0 +1,23 @@
+<!doctype html>
+<title>setting members of WorkerLocation</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id="log"></div>
+<script>
+async_test(function() {
+  var worker = new Worker('setting-members.js');
+  worker.onmessage = this.step_func(function(e) {
+    assert_equals(e.data[0], null);
+    assert_equals(e.data[1], location.href.replace('.html', '.js'), 'href');
+    assert_equals(e.data[2], location.protocol, 'protocol');
+    assert_equals(e.data[3], location.host, 'host');
+    assert_equals(e.data[4], location.hostname, 'hostname');
+    assert_equals(e.data[5], location.port, 'port');
+    assert_equals(e.data[6], location.pathname.replace('.html', '.js'), 'pathname');
+    assert_equals(e.data[7], location.search, 'search');
+    assert_equals(e.data[8], '', 'hash');
+    assert_array_equals(e.data[9], [], 'number of exceptions');
+    this.done();
+  });
+});
+</script>
\ No newline at end of file
diff --git a/testing/web-platform/tests/workers/interfaces/WorkerGlobalScope/location/setting-members.js b/testing/web-platform/tests/workers/interfaces/WorkerGlobalScope/location/setting-members.js
new file mode 100644
index 0000000000..4c5c8a35ae
--- /dev/null
+++ b/testing/web-platform/tests/workers/interfaces/WorkerGlobalScope/location/setting-members.js
@@ -0,0 +1,13 @@
+var exceptions = [];
+try { location.href = 1; } catch(e) { exceptions.push('href'); }
+try { location.protocol = 1; } catch(e) { exceptions.push('protocol'); }
+try { location.host = 1; } catch(e) { exceptions.push('host'); }
+try { location.hostname = 1; } catch(e) { exceptions.push('hostname');}
+try { location.port = 1; } catch(e) { exceptions.push('port'); }
+try { location.pathname = 1; } catch(e) { exceptions.push('pathname'); }
+try { location.search = 1; } catch(e) { exceptions.push('search'); }
+try { location.hash = 1; } catch(e) { exceptions.push('hash'); }
+
+postMessage([null, location.href, location.protocol, location.host,
+             location.hostname, location.port, location.pathname,
+             location.search, location.hash, exceptions]);
\ No newline at end of file
diff --git a/testing/web-platform/tests/workers/interfaces/WorkerGlobalScope/location/worker-separate-file.html b/testing/web-platform/tests/workers/interfaces/WorkerGlobalScope/location/worker-separate-file.html
new file mode 100644
index 0000000000..ac8e64dcc8
--- /dev/null
+++ b/testing/web-platform/tests/workers/interfaces/WorkerGlobalScope/location/worker-separate-file.html
@@ -0,0 +1,28 @@
+<!--
+/*
+-->
+<!doctype html>
+<title>location with a worker in separate file</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id="log"></div>
+<script>
+async_test(function() {
+  var worker = new Worker('post-location-members.js?a#b?c');
+  worker.onmessage = this.step_func(function(e) {
+    assert_equals(e.data[0], location.href.replace(/\/[^\/]+$/, '/post-location-members.js?a#b?c'));
+    assert_equals(e.data[1], location.protocol);
+    assert_equals(e.data[2], location.host);
+    assert_equals(e.data[3], location.hostname);
+    assert_equals(e.data[4], location.port);
+    assert_equals(e.data[5], location.pathname.replace(/\/[^\/]+$/, '/post-location-members.js'));
+    assert_equals(e.data[6], '?a');
+    assert_equals(e.data[7], '#b?c');
+    this.done();
+  });
+});
+</script>
+<!--
+*/
+//-->
+
diff --git a/testing/web-platform/tests/workers/interfaces/WorkerGlobalScope/onerror/exception-in-onerror.html b/testing/web-platform/tests/workers/interfaces/WorkerGlobalScope/onerror/exception-in-onerror.html
new file mode 100644
index 0000000000..5f3999db66
--- /dev/null
+++ b/testing/web-platform/tests/workers/interfaces/WorkerGlobalScope/onerror/exception-in-onerror.html
@@ -0,0 +1,91 @@
+<!doctype html>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script>
+// 1. Exception is thrown somewhere in a Worker.
+//    Various contexts are tested: from worker initialization,
+//    from setTimeout, from event handlers, etc.
+// 2. WorkerGlobalScope.onerror event handler is called.
+//    (i.e. `onerror` in the worker script)
+// 3. From the event handler, another exception is thrown.
+// 4. Each of Worker.onerror handler (on the parent Document) and
+//            Worker error event listener should be called twice:
+//    once for each of the exceptions thrown in Step 1 and 2, respectively.
+//    (We don't check the ordering of two Worker.onerror calls, because
+//    browsers fires them in different orders)
+
+function prepareHandler(t, messages) {
+  const fired = {};
+  let fired_count = 0;
+  t.step_timeout(() => {
+    if (fired_count < messages.length) {
+      let error_description = 'Worker.onerror not fired for:';
+      for (const message of messages) {
+        if (!fired[message]) {
+          error_description += ' ';
+          error_description += message;
+        }
+      }
+      assert_unreached(error_description);
+    }
+  }, 2000);
+  return t.step_func(e => {
+      e.preventDefault();
+      for (const message of messages) {
+        if (!fired[message] && e.message.indexOf(message) >= 0) {
+          fired[message] = true;
+          ++fired_count;
+          if (fired_count === messages.length) {
+            // Worker.onerror is fired for all messages.
+            t.done();
+          }
+          return;
+        }
+      }
+      assert_unreached("Unexpected worker.onerror message: " + e.message);
+    });
+}
+
+function expectErrors(worker, title, messages) {
+  async_test(t => {
+      worker.addEventListener('error', prepareHandler(t, messages));
+    }, title+ ': listener');
+  async_test(t => {
+      worker.onerror = prepareHandler(t, messages);
+    }, title + ': handler');
+}
+
+for (const type of ['classic', 'module']) {
+  const workerOptions = type === 'module' ? {type: 'module'}: {};
+
+  const worker1 = new Worker(
+      'throw.js?throw-in-toplevel&throw-in-onerror',
+      workerOptions);
+  expectErrors(
+      worker1,
+      'Throw in worker initialization: ' + type,
+      ['Throw in toplevel', 'Throw in error handler']);
+
+  const worker2 = new Worker(
+      'throw.js?throw-in-setTimeout-function&throw-in-onerror', workerOptions);
+  expectErrors(
+      worker2,
+      'Throw in setTimeout(function): ' + type,
+      ['Throw in setTimeout function', 'Throw in error handler']);
+
+  const worker3 = new Worker(
+      'throw.js?throw-in-setTimeout-string&throw-in-onerror', workerOptions);
+  expectErrors(
+      worker3,
+      'Throw in setTimeout(string): ' + type,
+      ['Throw in setTimeout string', 'Throw in error handler']);
+
+  const worker4 = new Worker('throw.js?throw-in-onerror', workerOptions);
+  worker4.postMessage('foo');
+  expectErrors(
+      worker4,
+      'Throw in message handler: ' + type,
+      ['Throw in message handler', 'Throw in error handler']);
+
+}
+</script>
diff --git a/testing/web-platform/tests/workers/interfaces/WorkerGlobalScope/onerror/handled.html b/testing/web-platform/tests/workers/interfaces/WorkerGlobalScope/onerror/handled.html
new file mode 100644
index 0000000000..7d4b03c6cd
--- /dev/null
+++ b/testing/web-platform/tests/workers/interfaces/WorkerGlobalScope/onerror/handled.html
@@ -0,0 +1,22 @@
+<!doctype html>
+<title>onerror, "handled"</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id="log"></div>
+<script>
+async_test(function() {
+  var worker = new Worker('handled.js');
+  worker.onmessage = this.step_func(function(e) {
+    assert_equals(typeof e.data[0], 'string', 'first argument');
+    assert_equals(e.data[1], document.URL.replace('.html', '.js'), 'second argument');
+    assert_equals(typeof e.data[2], 'number', 'third argument');
+    assert_equals(typeof e.data[3], 'number', 'fourth argument');
+    setTimeout(this.step_func(function() {
+      this.done();
+    }), 100);
+  });
+  worker.onerror = this.step_func(function(e) {
+    assert_unreached();
+  });
+});
+</script>
\ No newline at end of file
diff --git a/testing/web-platform/tests/workers/interfaces/WorkerGlobalScope/onerror/handled.js b/testing/web-platform/tests/workers/interfaces/WorkerGlobalScope/onerror/handled.js
new file mode 100644
index 0000000000..e58fa4a515
--- /dev/null
+++ b/testing/web-platform/tests/workers/interfaces/WorkerGlobalScope/onerror/handled.js
@@ -0,0 +1,8 @@
+onerror = function(a, b, c, d) {
+  postMessage([a, b, c, d]);
+  return true; // the error is "handled"
+}
+function x() {
+  y();
+}
+x();
\ No newline at end of file
diff --git a/testing/web-platform/tests/workers/interfaces/WorkerGlobalScope/onerror/message-classic-DOMException.html b/testing/web-platform/tests/workers/interfaces/WorkerGlobalScope/onerror/message-classic-DOMException.html
new file mode 100644
index 0000000000..df8c851475
--- /dev/null
+++ b/testing/web-platform/tests/workers/interfaces/WorkerGlobalScope/onerror/message-classic-DOMException.html
@@ -0,0 +1,7 @@
+<!doctype html>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="./message-helper.js"></script>
+<script>
+runTest('classic', 'DOMException-TypeError');
+</script>
diff --git a/testing/web-platform/tests/workers/interfaces/WorkerGlobalScope/onerror/message-classic-Error.html b/testing/web-platform/tests/workers/interfaces/WorkerGlobalScope/onerror/message-classic-Error.html
new file mode 100644
index 0000000000..e026b6ebf0
--- /dev/null
+++ b/testing/web-platform/tests/workers/interfaces/WorkerGlobalScope/onerror/message-classic-Error.html
@@ -0,0 +1,7 @@
+<!doctype html>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="./message-helper.js"></script>
+<script>
+runTest('classic', 'Error');
+</script>
diff --git a/testing/web-platform/tests/workers/interfaces/WorkerGlobalScope/onerror/message-helper.js b/testing/web-platform/tests/workers/interfaces/WorkerGlobalScope/onerror/message-helper.js
new file mode 100644
index 0000000000..6271329b03
--- /dev/null
+++ b/testing/web-platform/tests/workers/interfaces/WorkerGlobalScope/onerror/message-helper.js
@@ -0,0 +1,61 @@
+// The error's `message` values in Worker error event handlers are tested.
+// While not explicitly specified in the HTML spec, we expect some information
+// about thrown errors (e.g. original message, the string "TypeError", etc.)
+// to appear in the `message`.
+
+function prepareHandler(t, error, expectedCount) {
+  let count = 0;
+  return t.step_func(e => {
+      e.preventDefault();
+
+      assert_regexp_match(
+          e.message,
+          /Throw in/,
+          'e.message should contain the message of the thrown error');
+
+      if (error === 'DOMException-TypeError') {
+        assert_regexp_match(e.message, /TypeError/);
+      }
+
+      ++count;
+      if (count >= expectedCount) {
+        t.done();
+      }
+    });
+}
+
+function expectErrors(worker, error, expectedCount, title) {
+  async_test(t => {
+      worker.addEventListener('error',
+                              prepareHandler(t, error, expectedCount));
+    }, title+ ': listener');
+  async_test(t => {
+      worker.onerror = prepareHandler(t, error, expectedCount);
+    }, title + ': handler');
+}
+
+function runTest(type, error) {
+  for (const location of ['toplevel',
+                          'setTimeout-function',
+                          'setTimeout-string',
+                          'onmessage',
+                          'onerror']) {
+    const worker = new Worker(
+        'throw.js?throw-in-' + location + '&error=' + error,
+        {type});
+    let expectedCount = 1;
+    if (location === 'onmessage') {
+      // This makes the worker's message handler to throw an error.
+      worker.postMessage('foo');
+    }
+    if (location === 'onerror') {
+      // This makes the worker's message handler to throw an error,
+      // AND worker's error handler to throw another error.
+      // Therefore we expect two errors here.
+      worker.postMessage('foo');
+      expectedCount = 2;
+    }
+    expectErrors(worker, error, expectedCount,
+        'Throw ' + error + ' in ' + location + ': ' + type);
+  }
+}
diff --git a/testing/web-platform/tests/workers/interfaces/WorkerGlobalScope/onerror/message-module-DOMException.html b/testing/web-platform/tests/workers/interfaces/WorkerGlobalScope/onerror/message-module-DOMException.html
new file mode 100644
index 0000000000..8ed873bc32
--- /dev/null
+++ b/testing/web-platform/tests/workers/interfaces/WorkerGlobalScope/onerror/message-module-DOMException.html
@@ -0,0 +1,7 @@
+<!doctype html>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="./message-helper.js"></script>
+<script>
+runTest('module', 'DOMException-TypeError');
+</script>
diff --git a/testing/web-platform/tests/workers/interfaces/WorkerGlobalScope/onerror/message-module-Error.html b/testing/web-platform/tests/workers/interfaces/WorkerGlobalScope/onerror/message-module-Error.html
new file mode 100644
index 0000000000..046ff969d6
--- /dev/null
+++ b/testing/web-platform/tests/workers/interfaces/WorkerGlobalScope/onerror/message-module-Error.html
@@ -0,0 +1,7 @@
+<!doctype html>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="./message-helper.js"></script>
+<script>
+runTest('module', 'Error');
+</script>
diff --git a/testing/web-platform/tests/workers/interfaces/WorkerGlobalScope/onerror/not-handled.html b/testing/web-platform/tests/workers/interfaces/WorkerGlobalScope/onerror/not-handled.html
new file mode 100644
index 0000000000..11d03d728b
--- /dev/null
+++ b/testing/web-platform/tests/workers/interfaces/WorkerGlobalScope/onerror/not-handled.html
@@ -0,0 +1,28 @@
+<!doctype html>
+<title>onerror, "not handled"</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id="log"></div>
+<script>
+function createHandler(t) {
+  return t.step_func(function(e) {
+    assert_true(e instanceof ErrorEvent, 'e instanceof ErrorEvent');
+    assert_equals(typeof e.message, 'string', 'typeof e.message');
+    assert_equals(e.filename, document.URL.replace('.html', '.js'), 'e.filename');
+    assert_equals(typeof e.lineno, 'number', 'typeof e.lineno');
+    assert_equals(typeof e.colno, 'number', 'typeof e.column');
+    e.preventDefault(); // "handled"
+    t.done();
+  });
+}
+
+async_test(function(t) {
+  var worker = new Worker('not-handled.js');
+  worker.onerror = createHandler(t);
+}, 'Not handled evaluation error => Worker.onerror handler');
+
+async_test(function(t) {
+  var worker = new Worker('not-handled.js');
+  worker.addEventListener('error', createHandler(t));
+}, 'Not handled evaluation error => Worker error listener');
+</script>
diff --git a/testing/web-platform/tests/workers/interfaces/WorkerGlobalScope/onerror/not-handled.js b/testing/web-platform/tests/workers/interfaces/WorkerGlobalScope/onerror/not-handled.js
new file mode 100644
index 0000000000..c3254b0ba7
--- /dev/null
+++ b/testing/web-platform/tests/workers/interfaces/WorkerGlobalScope/onerror/not-handled.js
@@ -0,0 +1,7 @@
+onerror = function(a, b, c, d) {
+  return false; // the error is "not handled"
+}
+function x() {
+  y();
+}
+x();
\ No newline at end of file
diff --git a/testing/web-platform/tests/workers/interfaces/WorkerGlobalScope/onerror/propagate-to-window-onerror.html b/testing/web-platform/tests/workers/interfaces/WorkerGlobalScope/onerror/propagate-to-window-onerror.html
new file mode 100644
index 0000000000..b3be772679
--- /dev/null
+++ b/testing/web-platform/tests/workers/interfaces/WorkerGlobalScope/onerror/propagate-to-window-onerror.html
@@ -0,0 +1,21 @@
+<!doctype html>
+<title>onerror, "not handled" with only window.onerror defined</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id="log"></div>
+<script>
+setup({
+  allow_uncaught_exception: true,
+});
+async_test(function() {
+  var worker = new Worker('propagate-to-window-onerror.js');
+  window.onerror = this.step_func(function(a, b, c, d) {
+    assert_equals(typeof a, 'string', 'first argument');
+    assert_equals(b, document.URL.replace('.html', '.js'), 'second argument');
+    assert_equals(typeof c, 'number', 'third argument');
+    assert_equals(typeof d, 'number', 'fourth argument');
+    this.done();
+    return true; // "handled"
+  });
+});
+</script>
\ No newline at end of file
diff --git a/testing/web-platform/tests/workers/interfaces/WorkerGlobalScope/onerror/propagate-to-window-onerror.js b/testing/web-platform/tests/workers/interfaces/WorkerGlobalScope/onerror/propagate-to-window-onerror.js
new file mode 100644
index 0000000000..0daf488d6f
--- /dev/null
+++ b/testing/web-platform/tests/workers/interfaces/WorkerGlobalScope/onerror/propagate-to-window-onerror.js
@@ -0,0 +1,4 @@
+function x() {
+  y();
+}
+x();
\ No newline at end of file
diff --git a/testing/web-platform/tests/workers/interfaces/WorkerGlobalScope/onerror/throw.js b/testing/web-platform/tests/workers/interfaces/WorkerGlobalScope/onerror/throw.js
new file mode 100644
index 0000000000..704098a6d8
--- /dev/null
+++ b/testing/web-platform/tests/workers/interfaces/WorkerGlobalScope/onerror/throw.js
@@ -0,0 +1,34 @@
+const params = new URL(self.location.href).searchParams;
+
+self.createError = (message) => {
+  if (params.get('error') === 'DOMException-TypeError') {
+    return new DOMException(message, 'TypeError');
+  } else {
+    return new Error(message);
+  }
+};
+
+onerror = function() {
+  if (params.has('throw-in-onerror')) {
+    throw createError('Throw in error handler');
+  }
+  return false;
+};
+onmessage = function() {
+  throw createError('Throw in message handler');
+  return false;
+};
+
+if (params.has('throw-in-toplevel')) {
+  throw createError('Throw in toplevel');
+}
+
+// We don't use step_timeout() here, because we have to test the behavior of
+// setTimeout() without wrappers.
+if (params.has('throw-in-setTimeout-function')) {
+  setTimeout(() => { throw createError('Throw in setTimeout function') }, 0);
+}
+
+if (params.has('throw-in-setTimeout-string')) {
+  setTimeout("throw createError('Throw in setTimeout string')", 0);
+}
diff --git a/testing/web-platform/tests/workers/interfaces/WorkerGlobalScope/self.any.js b/testing/web-platform/tests/workers/interfaces/WorkerGlobalScope/self.any.js
new file mode 100644
index 0000000000..64b4ee2fae
--- /dev/null
+++ b/testing/web-platform/tests/workers/interfaces/WorkerGlobalScope/self.any.js
@@ -0,0 +1,19 @@
+// META: global=worker
+
+test(function() {
+  assert_equals(self, self);
+}, 'self === self');
+
+test(function() {
+  assert_true(self instanceof WorkerGlobalScope);
+}, 'self instanceof WorkerGlobalScope');
+
+test(function() {
+  assert_true('self' in self);
+}, '\'self\' in self');
+
+test(function() {
+  var x = self;
+  self = 1;
+  assert_equals(self, x);
+}, 'self = 1');
diff --git a/testing/web-platform/tests/workers/interfaces/WorkerUtils/WindowTimers/001.html b/testing/web-platform/tests/workers/interfaces/WorkerUtils/WindowTimers/001.html
new file mode 100644
index 0000000000..9fe5e2b1bc
--- /dev/null
+++ b/testing/web-platform/tests/workers/interfaces/WorkerUtils/WindowTimers/001.html
@@ -0,0 +1,14 @@
+<!doctype html>
+<title>setTimeout</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id=log></div>
+<script>
+async_test(function() {
+  var worker = new Worker('001.js');
+  worker.onmessage = this.step_func(function(e) {
+    assert_equals(e.data, 1);
+    this.done();
+  });
+});
+</script>
\ No newline at end of file
diff --git a/testing/web-platform/tests/workers/interfaces/WorkerUtils/WindowTimers/001.js b/testing/web-platform/tests/workers/interfaces/WorkerUtils/WindowTimers/001.js
new file mode 100644
index 0000000000..bd5b7c4071
--- /dev/null
+++ b/testing/web-platform/tests/workers/interfaces/WorkerUtils/WindowTimers/001.js
@@ -0,0 +1 @@
+setTimeout(function() { postMessage(1) }, 10);
\ No newline at end of file
diff --git a/testing/web-platform/tests/workers/interfaces/WorkerUtils/WindowTimers/002.html b/testing/web-platform/tests/workers/interfaces/WorkerUtils/WindowTimers/002.html
new file mode 100644
index 0000000000..1a10b3d0bb
--- /dev/null
+++ b/testing/web-platform/tests/workers/interfaces/WorkerUtils/WindowTimers/002.html
@@ -0,0 +1,13 @@
+<!doctype html>
+<title>clearTimeout</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id=log></div>
+<script>
+async_test(function() {
+  var worker = new Worker('002.js');
+  var gotMessage = false;
+  worker.onmessage = function() { gotMessage = true; };
+  setTimeout(this.step_func(function() { assert_false(gotMessage); this.done(); }), 100);
+});
+</script>
\ No newline at end of file
diff --git a/testing/web-platform/tests/workers/interfaces/WorkerUtils/WindowTimers/002.js b/testing/web-platform/tests/workers/interfaces/WorkerUtils/WindowTimers/002.js
new file mode 100644
index 0000000000..a96c088442
--- /dev/null
+++ b/testing/web-platform/tests/workers/interfaces/WorkerUtils/WindowTimers/002.js
@@ -0,0 +1,2 @@
+var t = setTimeout(function() { postMessage(1); }, 10);
+clearTimeout(t);
\ No newline at end of file
diff --git a/testing/web-platform/tests/workers/interfaces/WorkerUtils/WindowTimers/003.html b/testing/web-platform/tests/workers/interfaces/WorkerUtils/WindowTimers/003.html
new file mode 100644
index 0000000000..119d109b5f
--- /dev/null
+++ b/testing/web-platform/tests/workers/interfaces/WorkerUtils/WindowTimers/003.html
@@ -0,0 +1,14 @@
+<!doctype html>
+<title>setInterval</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id=log></div>
+<script>
+async_test(function() {
+  var worker = new Worker('003.js');
+  worker.onmessage = this.step_func(function(e) {
+    assert_equals(e.data, 1);
+    this.done();
+  });
+});
+</script>
\ No newline at end of file
diff --git a/testing/web-platform/tests/workers/interfaces/WorkerUtils/WindowTimers/003.js b/testing/web-platform/tests/workers/interfaces/WorkerUtils/WindowTimers/003.js
new file mode 100644
index 0000000000..e64e4e2179
--- /dev/null
+++ b/testing/web-platform/tests/workers/interfaces/WorkerUtils/WindowTimers/003.js
@@ -0,0 +1 @@
+setInterval(function() { postMessage(1); }, 10);
\ No newline at end of file
diff --git a/testing/web-platform/tests/workers/interfaces/WorkerUtils/WindowTimers/004.html b/testing/web-platform/tests/workers/interfaces/WorkerUtils/WindowTimers/004.html
new file mode 100644
index 0000000000..83d7bf915f
--- /dev/null
+++ b/testing/web-platform/tests/workers/interfaces/WorkerUtils/WindowTimers/004.html
@@ -0,0 +1,13 @@
+<!doctype html>
+<title>clearInterval</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id=log></div>
+<script>
+async_test(function() {
+  var worker = new Worker('004.js');
+  var i = 0;
+  worker.onmessage = function() { i++; }
+  setTimeout(this.step_func(function() { assert_equals(i, 0); this.done(); }), 100);
+});
+</script>
\ No newline at end of file
diff --git a/testing/web-platform/tests/workers/interfaces/WorkerUtils/WindowTimers/004.js b/testing/web-platform/tests/workers/interfaces/WorkerUtils/WindowTimers/004.js
new file mode 100644
index 0000000000..e80d79a8e5
--- /dev/null
+++ b/testing/web-platform/tests/workers/interfaces/WorkerUtils/WindowTimers/004.js
@@ -0,0 +1,4 @@
+var t = setInterval(function() {
+  postMessage(1);
+}, 10);
+clearInterval(t);
\ No newline at end of file
diff --git a/testing/web-platform/tests/workers/interfaces/WorkerUtils/WindowTimers/005.html b/testing/web-platform/tests/workers/interfaces/WorkerUtils/WindowTimers/005.html
new file mode 100644
index 0000000000..2a181d55d0
--- /dev/null
+++ b/testing/web-platform/tests/workers/interfaces/WorkerUtils/WindowTimers/005.html
@@ -0,0 +1,14 @@
+<!doctype html>
+<title>setInterval when closing</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id=log></div>
+<script>
+async_test(function() {
+  var worker = new Worker('005.js');
+  worker.onmessage = this.step_func(function(e) {
+    assert_equals(e.data, 1);
+    this.done();
+  });
+});
+</script>
\ No newline at end of file
diff --git a/testing/web-platform/tests/workers/interfaces/WorkerUtils/WindowTimers/005.js b/testing/web-platform/tests/workers/interfaces/WorkerUtils/WindowTimers/005.js
new file mode 100644
index 0000000000..125c224e7b
--- /dev/null
+++ b/testing/web-platform/tests/workers/interfaces/WorkerUtils/WindowTimers/005.js
@@ -0,0 +1,3 @@
+self.close();
+var t = setInterval(function() {}, 10);
+postMessage(t);
\ No newline at end of file
diff --git a/testing/web-platform/tests/workers/interfaces/WorkerUtils/importScripts/001.worker.js b/testing/web-platform/tests/workers/interfaces/WorkerUtils/importScripts/001.worker.js
new file mode 100644
index 0000000000..aa86c8ef17
--- /dev/null
+++ b/testing/web-platform/tests/workers/interfaces/WorkerUtils/importScripts/001.worker.js
@@ -0,0 +1,7 @@
+importScripts("/resources/testharness.js");
+
+test(function() {
+  importScripts();
+});
+
+done();
diff --git a/testing/web-platform/tests/workers/interfaces/WorkerUtils/importScripts/002.worker.js b/testing/web-platform/tests/workers/interfaces/WorkerUtils/importScripts/002.worker.js
new file mode 100644
index 0000000000..1cacee5ccb
--- /dev/null
+++ b/testing/web-platform/tests/workers/interfaces/WorkerUtils/importScripts/002.worker.js
@@ -0,0 +1,11 @@
+importScripts("/resources/testharness.js");
+
+test(function() {
+  var ran = false;
+  assert_throws_dom("SyntaxError", function() {
+    importScripts('data:text/javascript,ran=true','http://foo bar');
+  });
+  assert_false(ran, 'first argument to importScripts ran');
+});
+
+done();
diff --git a/testing/web-platform/tests/workers/interfaces/WorkerUtils/importScripts/003.html b/testing/web-platform/tests/workers/interfaces/WorkerUtils/importScripts/003.html
new file mode 100644
index 0000000000..5dcd08aa15
--- /dev/null
+++ b/testing/web-platform/tests/workers/interfaces/WorkerUtils/importScripts/003.html
@@ -0,0 +1,14 @@
+<!doctype html>
+<title>importScripts running scripts</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id="log"></div>
+<script>
+async_test(function() {
+  var worker = new Worker('003.js');
+  worker.onmessage = this.step_func(function(e) {
+    assert_equals(e.data, "abc");
+    this.done();
+  });
+});
+</script>
\ No newline at end of file
diff --git a/testing/web-platform/tests/workers/interfaces/WorkerUtils/importScripts/003.js b/testing/web-platform/tests/workers/interfaces/WorkerUtils/importScripts/003.js
new file mode 100644
index 0000000000..6e378ef20f
--- /dev/null
+++ b/testing/web-platform/tests/workers/interfaces/WorkerUtils/importScripts/003.js
@@ -0,0 +1,8 @@
+var x = 'a';
+try {
+  importScripts('data:text/javascript,x+="b"',
+                'data:text/javascript,x+="c"');
+} catch(e) {
+  x += "d"
+}
+postMessage(x);
\ No newline at end of file
diff --git a/testing/web-platform/tests/workers/interfaces/WorkerUtils/importScripts/004.html b/testing/web-platform/tests/workers/interfaces/WorkerUtils/importScripts/004.html
new file mode 100644
index 0000000000..62537e0888
--- /dev/null
+++ b/testing/web-platform/tests/workers/interfaces/WorkerUtils/importScripts/004.html
@@ -0,0 +1,15 @@
+<!doctype html>
+<title>importScripts broken script</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id="log"></div>
+<script>
+async_test(function() {
+  var worker = new Worker('004.js');
+  worker.onmessage = this.step_func(function(e) {
+    assert_equals(e.data[0], "first script successful. ");
+    assert_true(e.data[1], 'expected SyntaxError');
+    this.done();
+  });
+});
+</script>
\ No newline at end of file
diff --git a/testing/web-platform/tests/workers/interfaces/WorkerUtils/importScripts/004.js b/testing/web-platform/tests/workers/interfaces/WorkerUtils/importScripts/004.js
new file mode 100644
index 0000000000..98040d0d48
--- /dev/null
+++ b/testing/web-platform/tests/workers/interfaces/WorkerUtils/importScripts/004.js
@@ -0,0 +1,13 @@
+var x = '';
+var exception;
+try {
+  importScripts('data:text/javascript,x+="first script successful. "',
+                'data:text/javascript,x+="FAIL (second script). "; for(;) break;', // doesn't compile
+                'data:text/javascript,x+="FAIL (third script)"');
+} catch(ex) {
+  if (ex instanceof SyntaxError)
+    exception = true;
+  else
+    exception = String(ex);
+}
+postMessage([x, exception]);
\ No newline at end of file
diff --git a/testing/web-platform/tests/workers/interfaces/WorkerUtils/importScripts/005.html b/testing/web-platform/tests/workers/interfaces/WorkerUtils/importScripts/005.html
new file mode 100644
index 0000000000..7ebbc1be55
--- /dev/null
+++ b/testing/web-platform/tests/workers/interfaces/WorkerUtils/importScripts/005.html
@@ -0,0 +1,15 @@
+<!doctype html>
+<title>importScripts separate scripts</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id="log"></div>
+<script>
+async_test(function() {
+  var worker = new Worker('005.js');
+  worker.onmessage = this.step_func(function(e) {
+    assert_equals(e.data[0], undefined);
+    assert_true(e.data[1]);
+    this.done();
+  });
+});
+</script>
\ No newline at end of file
diff --git a/testing/web-platform/tests/workers/interfaces/WorkerUtils/importScripts/005.js b/testing/web-platform/tests/workers/interfaces/WorkerUtils/importScripts/005.js
new file mode 100644
index 0000000000..18c534efa9
--- /dev/null
+++ b/testing/web-platform/tests/workers/interfaces/WorkerUtils/importScripts/005.js
@@ -0,0 +1,9 @@
+var x;
+var y;
+try {
+  importScripts('data:text/javascript,x={',
+                'data:text/javascript,}');
+} catch(e) {
+  y = true;
+}
+postMessage([x, y]);
\ No newline at end of file
diff --git a/testing/web-platform/tests/workers/interfaces/WorkerUtils/importScripts/006.html b/testing/web-platform/tests/workers/interfaces/WorkerUtils/importScripts/006.html
new file mode 100644
index 0000000000..aec2fb1483
--- /dev/null
+++ b/testing/web-platform/tests/workers/interfaces/WorkerUtils/importScripts/006.html
@@ -0,0 +1,17 @@
+<!doctype html>
+<title>importScripts uncaught exception</title>
+<meta name="timeout" content="long">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id="log"></div>
+<script>
+async_test(function() {
+  var worker = new Worker('006.js');
+  worker.onmessage = this.step_func(function(e) {
+    assert_equals(e.data[0], 1);
+    assert_equals(e.data[1], 2);
+    assert_equals(e.data[2], undefined);
+    this.done();
+  });
+});
+</script>
\ No newline at end of file
diff --git a/testing/web-platform/tests/workers/interfaces/WorkerUtils/importScripts/006.js b/testing/web-platform/tests/workers/interfaces/WorkerUtils/importScripts/006.js
new file mode 100644
index 0000000000..fc170f790c
--- /dev/null
+++ b/testing/web-platform/tests/workers/interfaces/WorkerUtils/importScripts/006.js
@@ -0,0 +1,11 @@
+var x;
+var y;
+var z;
+try {
+  importScripts('data:text/javascript,x=1',
+                'data:text/javascript,throw 2',
+                'data:text/javascript,z=3');
+} catch(e) {
+  y = e;
+}
+postMessage([x, y, z]);
\ No newline at end of file
diff --git a/testing/web-platform/tests/workers/interfaces/WorkerUtils/importScripts/007.html b/testing/web-platform/tests/workers/interfaces/WorkerUtils/importScripts/007.html
new file mode 100644
index 0000000000..37e888365f
--- /dev/null
+++ b/testing/web-platform/tests/workers/interfaces/WorkerUtils/importScripts/007.html
@@ -0,0 +1,17 @@
+<!doctype html>
+<title>postMessage in importScripts</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id="log"></div>
+<script>
+async_test(function() {
+  var worker = new Worker('007.js');
+  var i = 0;
+  worker.onmessage = this.step_func(function(e) {
+    i++;
+    assert_equals(e.data, i);
+    if (i == 2)
+      this.done();
+  });
+});
+</script>
\ No newline at end of file
diff --git a/testing/web-platform/tests/workers/interfaces/WorkerUtils/importScripts/007.js b/testing/web-platform/tests/workers/interfaces/WorkerUtils/importScripts/007.js
new file mode 100644
index 0000000000..dc85216f3d
--- /dev/null
+++ b/testing/web-platform/tests/workers/interfaces/WorkerUtils/importScripts/007.js
@@ -0,0 +1,2 @@
+importScripts('data:text/javascript,postMessage(1)');
+postMessage(2);
\ No newline at end of file
diff --git a/testing/web-platform/tests/workers/interfaces/WorkerUtils/importScripts/008.html b/testing/web-platform/tests/workers/interfaces/WorkerUtils/importScripts/008.html
new file mode 100644
index 0000000000..f72b79939c
--- /dev/null
+++ b/testing/web-platform/tests/workers/interfaces/WorkerUtils/importScripts/008.html
@@ -0,0 +1,14 @@
+<!doctype html>
+<title>variables and functions crossing importScripts boundary</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id="log"></div>
+<script>
+async_test(function() {
+  var worker = new Worker('008.js');
+  worker.onmessage = this.step_func(function(e) {
+    assert_true(e.data);
+    this.done();
+  });
+});
+</script>
\ No newline at end of file
diff --git a/testing/web-platform/tests/workers/interfaces/WorkerUtils/importScripts/008.js b/testing/web-platform/tests/workers/interfaces/WorkerUtils/importScripts/008.js
new file mode 100644
index 0000000000..c957fcd635
--- /dev/null
+++ b/testing/web-platform/tests/workers/interfaces/WorkerUtils/importScripts/008.js
@@ -0,0 +1,3 @@
+var log = postMessage;
+importScripts('data:text/javascript,function run() { log(true) }');
+run();
\ No newline at end of file
diff --git a/testing/web-platform/tests/workers/interfaces/WorkerUtils/importScripts/009.html b/testing/web-platform/tests/workers/interfaces/WorkerUtils/importScripts/009.html
new file mode 100644
index 0000000000..e0eb5488c2
--- /dev/null
+++ b/testing/web-platform/tests/workers/interfaces/WorkerUtils/importScripts/009.html
@@ -0,0 +1,20 @@
+<!doctype html>
+<title>variables and functions crossing importScripts boundary, take 2</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id="log"></div>
+<script>
+async_test(function() {
+  var worker = new Worker('009.js');
+  var i = 0;
+  worker.onmessage = this.step_func(function(e) {
+    i++;
+    if (i == 1) {
+      assert_true(e.data);
+    } else {
+      assert_equals(e.data, 1);
+      this.done();
+    }
+  });
+});
+</script>
\ No newline at end of file
diff --git a/testing/web-platform/tests/workers/interfaces/WorkerUtils/importScripts/009.js b/testing/web-platform/tests/workers/interfaces/WorkerUtils/importScripts/009.js
new file mode 100644
index 0000000000..4b86f8c303
--- /dev/null
+++ b/testing/web-platform/tests/workers/interfaces/WorkerUtils/importScripts/009.js
@@ -0,0 +1,3 @@
+var log = postMessage;
+importScripts('data:text/javascript,function run() { for(var i = 0; i < 1000; ++i) { if (i == 500) log(true); } return 1; }');
+postMessage(run());
\ No newline at end of file
diff --git a/testing/web-platform/tests/workers/interfaces/WorkerUtils/importScripts/010.html b/testing/web-platform/tests/workers/interfaces/WorkerUtils/importScripts/010.html
new file mode 100644
index 0000000000..a6db49c4be
--- /dev/null
+++ b/testing/web-platform/tests/workers/interfaces/WorkerUtils/importScripts/010.html
@@ -0,0 +1,17 @@
+<!doctype html>
+<title>importScripts(undefined)</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id="log"></div>
+<script>
+async_test(function() {
+  var worker = new Worker('010.js');
+  worker.onmessage = this.step_func(function(e) {
+    assert_equals(e.data, 'undefined');
+    this.done();
+  })
+  worker.onerror = this.step_func(function(e) {
+    assert_unreached(e.message);
+  });
+});
+</script>
\ No newline at end of file
diff --git a/testing/web-platform/tests/workers/interfaces/WorkerUtils/importScripts/010.js b/testing/web-platform/tests/workers/interfaces/WorkerUtils/importScripts/010.js
new file mode 100644
index 0000000000..4ec4a3b8c7
--- /dev/null
+++ b/testing/web-platform/tests/workers/interfaces/WorkerUtils/importScripts/010.js
@@ -0,0 +1,11 @@
+// prevent recursion
+if ('beenThere' in self) {
+  throw 'undefined stringified to the empty string';
+}
+beenThere = true;
+try {
+  importScripts(undefined);
+  postMessage(got);
+} catch(ex) {
+  postMessage(String(ex));
+}
\ No newline at end of file
diff --git a/testing/web-platform/tests/workers/interfaces/WorkerUtils/importScripts/011.html b/testing/web-platform/tests/workers/interfaces/WorkerUtils/importScripts/011.html
new file mode 100644
index 0000000000..1bfb233497
--- /dev/null
+++ b/testing/web-platform/tests/workers/interfaces/WorkerUtils/importScripts/011.html
@@ -0,0 +1,17 @@
+<!doctype html>
+<title>importScripts(null)</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id="log"></div>
+<script>
+async_test(function() {
+  var worker = new Worker('011.js');
+  worker.onmessage = this.step_func(function(e) {
+    assert_equals(e.data, 'null');
+    this.done();
+  });
+  worker.onerror = this.step_func(function(e) {
+    assert_unreached(e.message);
+  });
+});
+</script>
\ No newline at end of file
diff --git a/testing/web-platform/tests/workers/interfaces/WorkerUtils/importScripts/011.js b/testing/web-platform/tests/workers/interfaces/WorkerUtils/importScripts/011.js
new file mode 100644
index 0000000000..bd6fed5c0a
--- /dev/null
+++ b/testing/web-platform/tests/workers/interfaces/WorkerUtils/importScripts/011.js
@@ -0,0 +1,11 @@
+// prevent recursion
+if ('beenThere' in self) {
+  throw 'null stringified to the empty string';
+}
+beenThere = true;
+try {
+  importScripts(null);
+  postMessage(got);
+} catch(ex) {
+  postMessage(String(ex));
+}
\ No newline at end of file
diff --git a/testing/web-platform/tests/workers/interfaces/WorkerUtils/importScripts/012.html b/testing/web-platform/tests/workers/interfaces/WorkerUtils/importScripts/012.html
new file mode 100644
index 0000000000..ab0778d0c7
--- /dev/null
+++ b/testing/web-platform/tests/workers/interfaces/WorkerUtils/importScripts/012.html
@@ -0,0 +1,17 @@
+<!doctype html>
+<title>importScripts(1)</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id="log"></div>
+<script>
+async_test(function() {
+  var worker = new Worker('012.js');
+  worker.onmessage = this.step_func(function(e) {
+    assert_equals(e.data, '1');
+    this.done();
+  });
+  worker.onerror = this.step_func(function(e) {
+    assert_unreached(e.message);
+  });
+});
+</script>
\ No newline at end of file
diff --git a/testing/web-platform/tests/workers/interfaces/WorkerUtils/importScripts/012.js b/testing/web-platform/tests/workers/interfaces/WorkerUtils/importScripts/012.js
new file mode 100644
index 0000000000..f4c887f7df
--- /dev/null
+++ b/testing/web-platform/tests/workers/interfaces/WorkerUtils/importScripts/012.js
@@ -0,0 +1,11 @@
+// prevent recursion
+if ('beenThere' in self) {
+  throw '1 stringified to the empty string';
+}
+beenThere = true;
+try {
+  importScripts(1);
+  postMessage(got);
+} catch(ex) {
+  postMessage(String(ex));
+}
\ No newline at end of file
diff --git a/testing/web-platform/tests/workers/interfaces/WorkerUtils/importScripts/1 b/testing/web-platform/tests/workers/interfaces/WorkerUtils/importScripts/1
new file mode 100644
index 0000000000..18cea4ff0f
--- /dev/null
+++ b/testing/web-platform/tests/workers/interfaces/WorkerUtils/importScripts/1
@@ -0,0 +1 @@
+var got = '1';
\ No newline at end of file
diff --git a/testing/web-platform/tests/workers/interfaces/WorkerUtils/importScripts/1.headers b/testing/web-platform/tests/workers/interfaces/WorkerUtils/importScripts/1.headers
new file mode 100644
index 0000000000..a17a9a3a12
--- /dev/null
+++ b/testing/web-platform/tests/workers/interfaces/WorkerUtils/importScripts/1.headers
@@ -0,0 +1 @@
+Content-Type: application/javascript
diff --git a/testing/web-platform/tests/workers/interfaces/WorkerUtils/importScripts/blob-url.worker.js b/testing/web-platform/tests/workers/interfaces/WorkerUtils/importScripts/blob-url.worker.js
new file mode 100644
index 0000000000..71603bf314
--- /dev/null
+++ b/testing/web-platform/tests/workers/interfaces/WorkerUtils/importScripts/blob-url.worker.js
@@ -0,0 +1,40 @@
+importScripts("/resources/testharness.js");
+
+function objectUrlFromScript(script) {
+  const blob = new Blob([script], { type: "text/javascript" });
+  return URL.createObjectURL(blob);
+}
+
+test((t) => {
+  self.run = false;
+  const blobScriptUrl = objectUrlFromScript(`self.run = true;`);
+  t.add_cleanup(() => URL.revokeObjectURL(blobScriptUrl));
+
+  importScripts(blobScriptUrl);
+  assert_true(self.run);
+}, "Blob URLs work on importScripts");
+
+test(() => {
+  self.run = false;
+  const blobScriptUrl = objectUrlFromScript(`self.run = true;`);
+
+  URL.revokeObjectURL(blobScriptUrl);
+
+  assert_throws_dom("NetworkError", () => {
+    importScripts(blobScriptUrl);
+  });
+  assert_false(self.run);
+}, "A revoked blob URL will fail");
+
+test(() => {
+  self.run = false;
+  const runScriptUrl = objectUrlFromScript(`self.run = true;`);
+  const revokeScriptUrl = objectUrlFromScript(
+    `URL.revokeObjectURL(${JSON.stringify(runScriptUrl)});`
+  );
+
+  importScripts(revokeScriptUrl, runScriptUrl);
+  assert_true(self.run);
+}, "Revoking a blob URL in an earlier script will not fail");
+
+done();
diff --git a/testing/web-platform/tests/workers/interfaces/WorkerUtils/importScripts/catch.sub.any.js b/testing/web-platform/tests/workers/interfaces/WorkerUtils/importScripts/catch.sub.any.js
new file mode 100644
index 0000000000..52da60be91
--- /dev/null
+++ b/testing/web-platform/tests/workers/interfaces/WorkerUtils/importScripts/catch.sub.any.js
@@ -0,0 +1,47 @@
+// META: global=worker
+
+const crossOrigin = "https://{{hosts[alt][]}}:{{ports[https][0]}}";
+const redirectToCrossOrigin = "/common/redirect.py?location=" + crossOrigin;
+
+test(function() {
+  assert_throws_js(SyntaxError, function() {
+    importScripts("/workers/modules/resources/syntax-error.js");
+  });
+}, "Same-origin syntax error");
+
+test(function() {
+  assert_throws_js(Error, function() {
+    importScripts("/workers/modules/resources/throw.js");
+  });
+}, "Same-origin throw");
+
+// https://html.spec.whatwg.org/C/#run-a-classic-script
+// Step 8.2. If rethrow errors is true and script's muted errors is true, then:
+// Step 8.2.2. Throw a "NetworkError" DOMException.
+test(function() {
+  assert_throws_dom("NetworkError", function() {
+    importScripts(crossOrigin +
+                  "/workers/modules/resources/syntax-error.js");
+  });
+}, "Cross-origin syntax error");
+
+test(function() {
+  assert_throws_dom("NetworkError", function() {
+    importScripts(crossOrigin +
+                  "/workers/modules/resources/throw.js");
+  });
+}, "Cross-origin throw");
+
+test(function() {
+  assert_throws_dom("NetworkError", function() {
+    importScripts(redirectToCrossOrigin +
+                  "/workers/modules/resources/syntax-error.js");
+  });
+}, "Redirect-to-cross-origin syntax error");
+
+test(function() {
+  assert_throws_dom("NetworkError", function() {
+    importScripts(redirectToCrossOrigin +
+                  "/workers/modules/resources/throw.js");
+  });
+}, "Redirect-to-Cross-origin throw");
diff --git a/testing/web-platform/tests/workers/interfaces/WorkerUtils/importScripts/null b/testing/web-platform/tests/workers/interfaces/WorkerUtils/importScripts/null
new file mode 100644
index 0000000000..8e54b66c50
--- /dev/null
+++ b/testing/web-platform/tests/workers/interfaces/WorkerUtils/importScripts/null
@@ -0,0 +1 @@
+var got = 'null';
\ No newline at end of file
diff --git a/testing/web-platform/tests/workers/interfaces/WorkerUtils/importScripts/null.headers b/testing/web-platform/tests/workers/interfaces/WorkerUtils/importScripts/null.headers
new file mode 100644
index 0000000000..a17a9a3a12
--- /dev/null
+++ b/testing/web-platform/tests/workers/interfaces/WorkerUtils/importScripts/null.headers
@@ -0,0 +1 @@
+Content-Type: application/javascript
diff --git a/testing/web-platform/tests/workers/interfaces/WorkerUtils/importScripts/report-error-cross-origin.sub.any.js b/testing/web-platform/tests/workers/interfaces/WorkerUtils/importScripts/report-error-cross-origin.sub.any.js
new file mode 100644
index 0000000000..4fd8914856
--- /dev/null
+++ b/testing/web-platform/tests/workers/interfaces/WorkerUtils/importScripts/report-error-cross-origin.sub.any.js
@@ -0,0 +1,8 @@
+// META: global=dedicatedworker,sharedworker
+// META: script=report-error-helper.js
+const crossOrigin = "https://{{hosts[alt][]}}:{{ports[https][0]}}";
+runTest(
+  crossOrigin + "/workers/modules/resources/syntax-error.js",
+  false,
+  "NetworkError"
+);
diff --git a/testing/web-platform/tests/workers/interfaces/WorkerUtils/importScripts/report-error-helper.js b/testing/web-platform/tests/workers/interfaces/WorkerUtils/importScripts/report-error-helper.js
new file mode 100644
index 0000000000..7fc6d0dd64
--- /dev/null
+++ b/testing/web-platform/tests/workers/interfaces/WorkerUtils/importScripts/report-error-helper.js
@@ -0,0 +1,80 @@
+setup({ allow_uncaught_exception:true });
+
+// For SyntaxError, the line in doImportScripts() is expected to be reported
+// as `e.lineno` etc. below.
+// doImportScripts() is introduced here to prevent the line number from being
+// affected by changes in runTest(), use of setTimeout(), etc.
+function doImportScripts(url) {
+  importScripts(url);
+}
+
+const t0 = async_test("WorkerGlobalScope error event: error");
+const t1 = async_test("WorkerGlobalScope error event: message");
+const t2 = async_test("WorkerGlobalScope error event: filename");
+const t3 = async_test("WorkerGlobalScope error event: lineno");
+
+function runTest(importScriptUrl, shouldUseSetTimeout, expected) {
+  self.addEventListener("error", e => {
+    if (expected === "NetworkError") {
+      t0.step_func_done(() => {
+        assert_equals(e.error.constructor, DOMException,
+            "e.error should be a DOMException")
+        assert_equals(e.error.name, "NetworkError");
+      })();
+
+      t1.step_func_done(() => {
+        assert_not_equals(e.message, "Script error.",
+            "e.message should not be muted to 'Script error.'");
+      })();
+
+      // filename, lineno etc. should NOT point to the location within
+      // `syntax-error.js` (otherwise parse errors to be muted are
+      // leaked to JavaScript).
+      // we expect they point to the caller of `importScripts()`,
+      // while this is not explicitly stated in the spec.
+      t2.step_func_done(() => {
+        assert_equals(e.filename, self.location.origin +
+            '/workers/interfaces/WorkerUtils/importScripts/report-error-helper.js');
+      })();
+      t3.step_func_done(() => {
+        assert_equals(e.lineno, 8);
+      })();
+      // We don't check `e.colno` for now, because browsers set different
+      // `colno` values.
+    } else if (expected === "SyntaxError") {
+      t0.step_func_done(() => {
+        assert_equals(e.error.constructor, SyntaxError);
+        assert_equals(e.error.name, "SyntaxError");
+      })();
+
+      t1.step_func_done(() => {
+        assert_not_equals(e.message, "Script error.",
+            "e.message should not be muted to 'Script error.'");
+      })();
+
+      // filename, lineno etc. are expected to point to the location within
+      // `syntax-error.js` because it is same-origin,
+      // while this is not explicitly stated in the spec.
+      t2.step_func_done(() => {
+        assert_equals(e.filename, self.location.origin +
+            '/workers/modules/resources/syntax-error.js');
+      })();
+      t3.step_func_done(() => {
+        assert_equals(e.lineno, 1);
+      })();
+      // We don't check `e.colno` for now, because browsers set different
+      // `colno` values.
+    }
+
+    // Because importScripts() throws, we call done() here.
+    done();
+  });
+
+  if (shouldUseSetTimeout) {
+    setTimeout(
+      () => doImportScripts(importScriptUrl),
+      0);
+  } else {
+    doImportScripts(importScriptUrl);
+  }
+}
diff --git a/testing/web-platform/tests/workers/interfaces/WorkerUtils/importScripts/report-error-redirect-to-cross-origin.sub.any.js b/testing/web-platform/tests/workers/interfaces/WorkerUtils/importScripts/report-error-redirect-to-cross-origin.sub.any.js
new file mode 100644
index 0000000000..2b9600973f
--- /dev/null
+++ b/testing/web-platform/tests/workers/interfaces/WorkerUtils/importScripts/report-error-redirect-to-cross-origin.sub.any.js
@@ -0,0 +1,9 @@
+// META: global=dedicatedworker,sharedworker
+// META: script=report-error-helper.js
+const crossOrigin = "https://{{hosts[alt][]}}:{{ports[https][0]}}";
+runTest(
+  "/common/redirect.py?location=" + crossOrigin +
+      "/workers/modules/resources/syntax-error.js",
+  false,
+  "NetworkError"
+);
diff --git a/testing/web-platform/tests/workers/interfaces/WorkerUtils/importScripts/report-error-same-origin.sub.any.js b/testing/web-platform/tests/workers/interfaces/WorkerUtils/importScripts/report-error-same-origin.sub.any.js
new file mode 100644
index 0000000000..f7de416e11
--- /dev/null
+++ b/testing/web-platform/tests/workers/interfaces/WorkerUtils/importScripts/report-error-same-origin.sub.any.js
@@ -0,0 +1,7 @@
+// META: global=dedicatedworker,sharedworker
+// META: script=report-error-helper.js
+runTest(
+  "/workers/modules/resources/syntax-error.js",
+  false,
+  "SyntaxError"
+);
diff --git a/testing/web-platform/tests/workers/interfaces/WorkerUtils/importScripts/report-error-setTimeout-cross-origin.sub.any.js b/testing/web-platform/tests/workers/interfaces/WorkerUtils/importScripts/report-error-setTimeout-cross-origin.sub.any.js
new file mode 100644
index 0000000000..a1bbef7bc4
--- /dev/null
+++ b/testing/web-platform/tests/workers/interfaces/WorkerUtils/importScripts/report-error-setTimeout-cross-origin.sub.any.js
@@ -0,0 +1,8 @@
+// META: global=dedicatedworker,sharedworker
+// META: script=report-error-helper.js
+const crossOrigin = "https://{{hosts[alt][]}}:{{ports[https][0]}}";
+runTest(
+  crossOrigin + "/workers/modules/resources/syntax-error.js",
+  true,
+  "NetworkError"
+);
diff --git a/testing/web-platform/tests/workers/interfaces/WorkerUtils/importScripts/report-error-setTimeout-redirect-to-cross-origin.sub.any.js b/testing/web-platform/tests/workers/interfaces/WorkerUtils/importScripts/report-error-setTimeout-redirect-to-cross-origin.sub.any.js
new file mode 100644
index 0000000000..2755b337d3
--- /dev/null
+++ b/testing/web-platform/tests/workers/interfaces/WorkerUtils/importScripts/report-error-setTimeout-redirect-to-cross-origin.sub.any.js
@@ -0,0 +1,9 @@
+// META: global=dedicatedworker,sharedworker
+// META: script=report-error-helper.js
+const crossOrigin = "https://{{hosts[alt][]}}:{{ports[https][0]}}";
+runTest(
+  "/common/redirect.py?location=" + crossOrigin +
+      "/workers/modules/resources/syntax-error.js",
+  true,
+  "NetworkError"
+);
diff --git a/testing/web-platform/tests/workers/interfaces/WorkerUtils/importScripts/report-error-setTimeout-same-origin.sub.any.js b/testing/web-platform/tests/workers/interfaces/WorkerUtils/importScripts/report-error-setTimeout-same-origin.sub.any.js
new file mode 100644
index 0000000000..c4f70ebec9
--- /dev/null
+++ b/testing/web-platform/tests/workers/interfaces/WorkerUtils/importScripts/report-error-setTimeout-same-origin.sub.any.js
@@ -0,0 +1,7 @@
+// META: global=dedicatedworker,sharedworker
+// META: script=report-error-helper.js
+runTest(
+  "/workers/modules/resources/syntax-error.js",
+  true,
+  "SyntaxError"
+);
diff --git a/testing/web-platform/tests/workers/interfaces/WorkerUtils/importScripts/undefined b/testing/web-platform/tests/workers/interfaces/WorkerUtils/importScripts/undefined
new file mode 100644
index 0000000000..f99ba4be74
--- /dev/null
+++ b/testing/web-platform/tests/workers/interfaces/WorkerUtils/importScripts/undefined
@@ -0,0 +1 @@
+var got = 'undefined';
\ No newline at end of file
diff --git a/testing/web-platform/tests/workers/interfaces/WorkerUtils/importScripts/undefined.headers b/testing/web-platform/tests/workers/interfaces/WorkerUtils/importScripts/undefined.headers
new file mode 100644
index 0000000000..a17a9a3a12
--- /dev/null
+++ b/testing/web-platform/tests/workers/interfaces/WorkerUtils/importScripts/undefined.headers
@@ -0,0 +1 @@
+Content-Type: application/javascript
diff --git a/testing/web-platform/tests/workers/interfaces/WorkerUtils/navigator/002.html b/testing/web-platform/tests/workers/interfaces/WorkerUtils/navigator/002.html
new file mode 100644
index 0000000000..4c76e2b699
--- /dev/null
+++ b/testing/web-platform/tests/workers/interfaces/WorkerUtils/navigator/002.html
@@ -0,0 +1,14 @@
+<!doctype html>
+<title>navigator.appName</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id=log></div>
+<script>
+async_test(function() {
+  var worker = new Worker('002.js');
+  worker.onmessage = this.step_func(function(e) {
+    assert_equals(e.data, navigator.appName);
+    this.done();
+  });
+});
+</script>
\ No newline at end of file
diff --git a/testing/web-platform/tests/workers/interfaces/WorkerUtils/navigator/002.js b/testing/web-platform/tests/workers/interfaces/WorkerUtils/navigator/002.js
new file mode 100644
index 0000000000..a5af348ef1
--- /dev/null
+++ b/testing/web-platform/tests/workers/interfaces/WorkerUtils/navigator/002.js
@@ -0,0 +1 @@
+postMessage(navigator.appName);
\ No newline at end of file
diff --git a/testing/web-platform/tests/workers/interfaces/WorkerUtils/navigator/003.html b/testing/web-platform/tests/workers/interfaces/WorkerUtils/navigator/003.html
new file mode 100644
index 0000000000..86ab5aee48
--- /dev/null
+++ b/testing/web-platform/tests/workers/interfaces/WorkerUtils/navigator/003.html
@@ -0,0 +1,14 @@
+<!doctype html>
+<title>navigator.appVersion</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id=log></div>
+<script>
+async_test(function() {
+  var worker = new Worker('003.js');
+  worker.onmessage = this.step_func(function(e) {
+    assert_equals(e.data, navigator.appVersion);
+    this.done();
+  });
+});
+</script>
\ No newline at end of file
diff --git a/testing/web-platform/tests/workers/interfaces/WorkerUtils/navigator/003.js b/testing/web-platform/tests/workers/interfaces/WorkerUtils/navigator/003.js
new file mode 100644
index 0000000000..ff92f8aadb
--- /dev/null
+++ b/testing/web-platform/tests/workers/interfaces/WorkerUtils/navigator/003.js
@@ -0,0 +1 @@
+postMessage(navigator.appVersion);
\ No newline at end of file
diff --git a/testing/web-platform/tests/workers/interfaces/WorkerUtils/navigator/004.html b/testing/web-platform/tests/workers/interfaces/WorkerUtils/navigator/004.html
new file mode 100644
index 0000000000..93eee00957
--- /dev/null
+++ b/testing/web-platform/tests/workers/interfaces/WorkerUtils/navigator/004.html
@@ -0,0 +1,14 @@
+<!doctype html>
+<title>navigator.platform</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id=log></div>
+<script>
+async_test(function() {
+  var worker = new Worker('004.js');
+  worker.onmessage = this.step_func(function(e) {
+    assert_equals(e.data, navigator.platform);
+    this.done();
+  });
+});
+</script>
\ No newline at end of file
diff --git a/testing/web-platform/tests/workers/interfaces/WorkerUtils/navigator/004.js b/testing/web-platform/tests/workers/interfaces/WorkerUtils/navigator/004.js
new file mode 100644
index 0000000000..c1b575e43c
--- /dev/null
+++ b/testing/web-platform/tests/workers/interfaces/WorkerUtils/navigator/004.js
@@ -0,0 +1 @@
+postMessage(navigator.platform);
\ No newline at end of file
diff --git a/testing/web-platform/tests/workers/interfaces/WorkerUtils/navigator/005.html b/testing/web-platform/tests/workers/interfaces/WorkerUtils/navigator/005.html
new file mode 100644
index 0000000000..ad2899e62e
--- /dev/null
+++ b/testing/web-platform/tests/workers/interfaces/WorkerUtils/navigator/005.html
@@ -0,0 +1,14 @@
+<!doctype html>
+<title>navigator.userAgent</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id=log></div>
+<script>
+async_test(function() {
+  var worker = new Worker('005.js');
+  worker.onmessage = this.step_func(function(e) {
+    assert_equals(e.data, navigator.userAgent);
+    this.done();
+  });
+});
+</script>
\ No newline at end of file
diff --git a/testing/web-platform/tests/workers/interfaces/WorkerUtils/navigator/005.js b/testing/web-platform/tests/workers/interfaces/WorkerUtils/navigator/005.js
new file mode 100644
index 0000000000..d62252d39b
--- /dev/null
+++ b/testing/web-platform/tests/workers/interfaces/WorkerUtils/navigator/005.js
@@ -0,0 +1 @@
+postMessage(navigator.userAgent);
\ No newline at end of file
diff --git a/testing/web-platform/tests/workers/interfaces/WorkerUtils/navigator/006.html b/testing/web-platform/tests/workers/interfaces/WorkerUtils/navigator/006.html
new file mode 100644
index 0000000000..e0f7386af3
--- /dev/null
+++ b/testing/web-platform/tests/workers/interfaces/WorkerUtils/navigator/006.html
@@ -0,0 +1,14 @@
+<!doctype html>
+<title>navigator.onLine</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id=log></div>
+<script>
+async_test(function() {
+  var worker = new Worker('006.js');
+  worker.onmessage = this.step_func(function(e) {
+    assert_equals(e.data, navigator.onLine);
+    this.done();
+  });
+});
+</script>
\ No newline at end of file
diff --git a/testing/web-platform/tests/workers/interfaces/WorkerUtils/navigator/006.js b/testing/web-platform/tests/workers/interfaces/WorkerUtils/navigator/006.js
new file mode 100644
index 0000000000..325fd0fbde
--- /dev/null
+++ b/testing/web-platform/tests/workers/interfaces/WorkerUtils/navigator/006.js
@@ -0,0 +1 @@
+postMessage(navigator.onLine);
\ No newline at end of file
diff --git a/testing/web-platform/tests/workers/interfaces/WorkerUtils/navigator/007.html b/testing/web-platform/tests/workers/interfaces/WorkerUtils/navigator/007.html
new file mode 100644
index 0000000000..8f9d38dd85
--- /dev/null
+++ b/testing/web-platform/tests/workers/interfaces/WorkerUtils/navigator/007.html
@@ -0,0 +1,14 @@
+<!doctype html>
+<title>readonlyness of members of Navigator</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id=log></div>
+<script>
+async_test(function() {
+  var worker = new Worker('007.js');
+  worker.onmessage = this.step_func(function(e) {
+    assert_equals(e.data, '');
+    this.done();
+  });
+});
+</script>
\ No newline at end of file
diff --git a/testing/web-platform/tests/workers/interfaces/WorkerUtils/navigator/007.js b/testing/web-platform/tests/workers/interfaces/WorkerUtils/navigator/007.js
new file mode 100644
index 0000000000..d0879da908
--- /dev/null
+++ b/testing/web-platform/tests/workers/interfaces/WorkerUtils/navigator/007.js
@@ -0,0 +1,9 @@
+var log = [];
+var neverEncounteredValue = "This is not the value you are looking for.";
+for (x in navigator) {
+  // this should silently fail and not throw per webidl
+  navigator[x] = neverEncounteredValue;
+  if (navigator[x] === neverEncounteredValue)
+    log.push(x);
+}
+postMessage(log.join(', '));
\ No newline at end of file
diff --git a/testing/web-platform/tests/workers/interfaces/WorkerUtils/navigator/language.html b/testing/web-platform/tests/workers/interfaces/WorkerUtils/navigator/language.html
new file mode 100644
index 0000000000..535ab3a7cb
--- /dev/null
+++ b/testing/web-platform/tests/workers/interfaces/WorkerUtils/navigator/language.html
@@ -0,0 +1,14 @@
+<!doctype html>
+<title>navigator.language</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id=log></div>
+<script>
+async_test(function() {
+  var worker = new Worker('language.js');
+  worker.onmessage = this.step_func(function(e) {
+    assert_equals(e.data, navigator.language);
+    this.done();
+  });
+});
+</script>
\ No newline at end of file
diff --git a/testing/web-platform/tests/workers/interfaces/WorkerUtils/navigator/language.js b/testing/web-platform/tests/workers/interfaces/WorkerUtils/navigator/language.js
new file mode 100644
index 0000000000..e94ba4dfcf
--- /dev/null
+++ b/testing/web-platform/tests/workers/interfaces/WorkerUtils/navigator/language.js
@@ -0,0 +1 @@
+postMessage(navigator.language);
\ No newline at end of file
-- 
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