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-rw-r--r--testing/web-platform/tests/html/semantics/text-level-semantics/historical.html29
-rw-r--r--testing/web-platform/tests/html/semantics/text-level-semantics/the-a-element/a-click-handler-with-null-browsing-context-crash.html21
-rw-r--r--testing/web-platform/tests/html/semantics/text-level-semantics/the-a-element/a-download-404.py2
-rw-r--r--testing/web-platform/tests/html/semantics/text-level-semantics/the-a-element/a-download-click-404.html25
-rw-r--r--testing/web-platform/tests/html/semantics/text-level-semantics/the-a-element/a-download-click-redirect-to-javascript.html29
-rw-r--r--testing/web-platform/tests/html/semantics/text-level-semantics/the-a-element/a-download-click.html33
-rw-r--r--testing/web-platform/tests/html/semantics/text-level-semantics/the-a-element/a-stringifier.html16
-rw-r--r--testing/web-platform/tests/html/semantics/text-level-semantics/the-a-element/a.text-getter-01.html34
-rw-r--r--testing/web-platform/tests/html/semantics/text-level-semantics/the-a-element/a.text-setter-01.html41
-rw-r--r--testing/web-platform/tests/html/semantics/text-level-semantics/the-a-element/resources/a-download-404.html2
-rw-r--r--testing/web-platform/tests/html/semantics/text-level-semantics/the-a-element/resources/a-download-click.html2
-rw-r--r--testing/web-platform/tests/html/semantics/text-level-semantics/the-a-element/resources/a-download-redirect-to-javascript.html5
-rw-r--r--testing/web-platform/tests/html/semantics/text-level-semantics/the-a-element/resources/a-onclick-handler-iframe.html1
-rw-r--r--testing/web-platform/tests/html/semantics/text-level-semantics/the-b-element/b-usage-notref.html6
-rw-r--r--testing/web-platform/tests/html/semantics/text-level-semantics/the-b-element/b-usage.html8
-rw-r--r--testing/web-platform/tests/html/semantics/text-level-semantics/the-bdi-element/bdi-auto-dir-default-ref.html36
-rw-r--r--testing/web-platform/tests/html/semantics/text-level-semantics/the-bdi-element/bdi-auto-dir-default.html46
-rw-r--r--testing/web-platform/tests/html/semantics/text-level-semantics/the-bdi-element/bdi-neutral-missing-pdf-ref.html44
-rw-r--r--testing/web-platform/tests/html/semantics/text-level-semantics/the-bdi-element/bdi-neutral-missing-pdf.html56
-rw-r--r--testing/web-platform/tests/html/semantics/text-level-semantics/the-bdi-element/bdi-neutral-nested-ref.html44
-rw-r--r--testing/web-platform/tests/html/semantics/text-level-semantics/the-bdi-element/bdi-neutral-nested.html52
-rw-r--r--testing/web-platform/tests/html/semantics/text-level-semantics/the-bdi-element/bdi-neutral-number-ref.html44
-rw-r--r--testing/web-platform/tests/html/semantics/text-level-semantics/the-bdi-element/bdi-neutral-number.html53
-rw-r--r--testing/web-platform/tests/html/semantics/text-level-semantics/the-bdi-element/bdi-neutral-separate-ref.html36
-rw-r--r--testing/web-platform/tests/html/semantics/text-level-semantics/the-bdi-element/bdi-neutral-separate.html47
-rw-r--r--testing/web-platform/tests/html/semantics/text-level-semantics/the-bdi-element/bdi-neutral-to-another-bdi-1-ref.html47
-rw-r--r--testing/web-platform/tests/html/semantics/text-level-semantics/the-bdi-element/bdi-neutral-to-another-bdi-1.html58
-rw-r--r--testing/web-platform/tests/html/semantics/text-level-semantics/the-bdi-element/bdi-neutral-to-another-bdi-2-ref.html47
-rw-r--r--testing/web-platform/tests/html/semantics/text-level-semantics/the-bdi-element/bdi-neutral-to-another-bdi-2.html59
-rw-r--r--testing/web-platform/tests/html/semantics/text-level-semantics/the-bdi-element/bdi-neutral-to-letter-following-1-ref.html45
-rw-r--r--testing/web-platform/tests/html/semantics/text-level-semantics/the-bdi-element/bdi-neutral-to-letter-following-1.html54
-rw-r--r--testing/web-platform/tests/html/semantics/text-level-semantics/the-bdi-element/bdi-neutral-to-letter-following-2-ref.html45
-rw-r--r--testing/web-platform/tests/html/semantics/text-level-semantics/the-bdi-element/bdi-neutral-to-letter-following-2.html54
-rw-r--r--testing/web-platform/tests/html/semantics/text-level-semantics/the-bdi-element/bdi-neutral-to-letter-preceding-1-ref.html45
-rw-r--r--testing/web-platform/tests/html/semantics/text-level-semantics/the-bdi-element/bdi-neutral-to-letter-preceding-1.html54
-rw-r--r--testing/web-platform/tests/html/semantics/text-level-semantics/the-bdi-element/bdi-neutral-to-letter-preceding-2-ref.html45
-rw-r--r--testing/web-platform/tests/html/semantics/text-level-semantics/the-bdi-element/bdi-neutral-to-letter-preceding-2.html54
-rw-r--r--testing/web-platform/tests/html/semantics/text-level-semantics/the-bdi-element/bdi-neutral-to-number-following-1-ref.html45
-rw-r--r--testing/web-platform/tests/html/semantics/text-level-semantics/the-bdi-element/bdi-neutral-to-number-following-1.html54
-rw-r--r--testing/web-platform/tests/html/semantics/text-level-semantics/the-bdi-element/bdi-neutral-to-number-following-2-ref.html45
-rw-r--r--testing/web-platform/tests/html/semantics/text-level-semantics/the-bdi-element/bdi-neutral-to-number-following-2.html53
-rw-r--r--testing/web-platform/tests/html/semantics/text-level-semantics/the-bdi-element/bdi-neutral-to-surrounding-run-ref.html44
-rw-r--r--testing/web-platform/tests/html/semantics/text-level-semantics/the-bdi-element/bdi-neutral-to-surrounding-run.html56
-rw-r--r--testing/web-platform/tests/html/semantics/text-level-semantics/the-bdi-element/bdi-neutral-wrapped-ref.html52
-rw-r--r--testing/web-platform/tests/html/semantics/text-level-semantics/the-bdi-element/bdi-neutral-wrapped.html73
-rw-r--r--testing/web-platform/tests/html/semantics/text-level-semantics/the-bdi-element/bdi-paragraph-level-container-ref.html36
-rw-r--r--testing/web-platform/tests/html/semantics/text-level-semantics/the-bdi-element/bdi-paragraph-level-container.html46
-rw-r--r--testing/web-platform/tests/html/semantics/text-level-semantics/the-bdo-element/bdo-child.html17
-rw-r--r--testing/web-platform/tests/html/semantics/text-level-semantics/the-bdo-element/bdo-ltr.html15
-rw-r--r--testing/web-platform/tests/html/semantics/text-level-semantics/the-bdo-element/bdo-override.html18
-rw-r--r--testing/web-platform/tests/html/semantics/text-level-semantics/the-bdo-element/bidi-001-ref.html11
-rw-r--r--testing/web-platform/tests/html/semantics/text-level-semantics/the-bdo-element/bidi-001.html14
-rw-r--r--testing/web-platform/tests/html/semantics/text-level-semantics/the-br-element/br-bidi-in-inline-ancestors-ref.html38
-rw-r--r--testing/web-platform/tests/html/semantics/text-level-semantics/the-br-element/br-bidi-in-inline-ancestors.html59
-rw-r--r--testing/web-platform/tests/html/semantics/text-level-semantics/the-br-element/br-bidi-ref.html19
-rw-r--r--testing/web-platform/tests/html/semantics/text-level-semantics/the-br-element/br-bidi.html22
-rw-r--r--testing/web-platform/tests/html/semantics/text-level-semantics/the-ruby-element/rt-without-ruby-crash.html11
-rw-r--r--testing/web-platform/tests/html/semantics/text-level-semantics/the-ruby-element/ruby-usage-notref.html6
-rw-r--r--testing/web-platform/tests/html/semantics/text-level-semantics/the-ruby-element/ruby-usage.html8
-rw-r--r--testing/web-platform/tests/html/semantics/text-level-semantics/the-time-element/001.html68
-rw-r--r--testing/web-platform/tests/html/semantics/text-level-semantics/the-wbr-element/wbr-element-ref.html10
-rw-r--r--testing/web-platform/tests/html/semantics/text-level-semantics/the-wbr-element/wbr-element.html12
62 files changed, 2151 insertions, 0 deletions
diff --git a/testing/web-platform/tests/html/semantics/text-level-semantics/historical.html b/testing/web-platform/tests/html/semantics/text-level-semantics/historical.html
new file mode 100644
index 0000000000..7fe83a95ed
--- /dev/null
+++ b/testing/web-platform/tests/html/semantics/text-level-semantics/historical.html
@@ -0,0 +1,29 @@
+<!doctype html>
+<title>Historical text-level element features should not be supported</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id=log></div>
+<script>
+function t(property, tagNames) {
+ if (typeof tagNames === "string") {
+ tagNames = [tagNames];
+ }
+ tagNames.forEach(function(tagName) {
+ test(function() {
+ assert_false(property in document.createElement(tagName));
+ }, tagName + '.' + property + ' should not be supported');
+ });
+}
+
+// <area> and <link> are in other sections in the spec, but we'll test them here together with <a>
+
+// removed in https://github.com/whatwg/html/commit/790479ab1ba143efc27d1f92cd0465627df48fb0
+t('hreflang', 'area');
+t('type', 'area');
+
+// renamed to dateTime in https://github.com/whatwg/html/commit/8b6732237c7021cd61e3c3463146234ca8ce5bad
+t('datetime', 'time');
+
+// removed in https://github.com/whatwg/html/commit/66fcb2357f205448fe2f40d7834a1e8ea2ed283b
+t('media', ['a', 'area']);
+</script>
diff --git a/testing/web-platform/tests/html/semantics/text-level-semantics/the-a-element/a-click-handler-with-null-browsing-context-crash.html b/testing/web-platform/tests/html/semantics/text-level-semantics/the-a-element/a-click-handler-with-null-browsing-context-crash.html
new file mode 100644
index 0000000000..a9fd6b82bd
--- /dev/null
+++ b/testing/web-platform/tests/html/semantics/text-level-semantics/the-a-element/a-click-handler-with-null-browsing-context-crash.html
@@ -0,0 +1,21 @@
+<!DOCTYPE html>
+<title>HTMLAnchorElement.onclick with null browsing conext</title>
+<link rel="author" title="Nate Chapin" href="mailto:japhet@chromium.org">
+<link rel="help" href="https://html.spec.whatwg.org/C/#the-a-element">
+<link rel="help" href="https://bugs.chromium.org/p/chromium/issues/detail?id=1083721">
+<meta name="assert" content="An <a> from a discarded browsing context that is cloned into a new document should not crash when clicked"/>
+<body>
+<iframe id="i" src="resources/a-onclick-handler-iframe.html"></iframe>
+<script>
+window.onload = () => {
+ var range = i.contentDocument.createRange();
+ range.selectNodeContents(i.contentDocument.body);
+ i.remove();
+
+ // Clone the <a> into this document, and ensure clicking it does not crash.
+ document.body.appendChild(range.cloneContents());
+ var a = document.getElementsByTagName('a')[0];
+ a.click();
+};
+</script>
+</body>
diff --git a/testing/web-platform/tests/html/semantics/text-level-semantics/the-a-element/a-download-404.py b/testing/web-platform/tests/html/semantics/text-level-semantics/the-a-element/a-download-404.py
new file mode 100644
index 0000000000..abb85139b3
--- /dev/null
+++ b/testing/web-platform/tests/html/semantics/text-level-semantics/the-a-element/a-download-404.py
@@ -0,0 +1,2 @@
+def main(request, response):
+ return 404, [(b"Content-Type", b"text/html")], b'Some content for the masses.' * 100
diff --git a/testing/web-platform/tests/html/semantics/text-level-semantics/the-a-element/a-download-click-404.html b/testing/web-platform/tests/html/semantics/text-level-semantics/the-a-element/a-download-click-404.html
new file mode 100644
index 0000000000..3c8adc0b97
--- /dev/null
+++ b/testing/web-platform/tests/html/semantics/text-level-semantics/the-a-element/a-download-click-404.html
@@ -0,0 +1,25 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>Clicking on an &lt;a> element with a download attribute and href that leads to 404 should not navigate</title>
+<link rel="help" href="https://html.spec.whatwg.org/multipage/#the-a-element:activation-behaviour">
+<link rel="help" href="https://html.spec.whatwg.org/multipage/links.html#attr-hyperlink-download">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<body>
+<script>
+"use strict";
+async_test(t => {
+ const errorFrame = document.createElement("iframe");
+
+ errorFrame.addEventListener("load", t.step_func(function () {
+ errorFrame.contentWindow.addEventListener(
+ "beforeunload", t.unreached_func("Navigated instead of downloading"));
+
+ errorFrame.contentDocument.querySelector("#error-url").click();
+ t.step_timeout(() => t.done(), 1000);
+ }));
+ errorFrame.src = "resources/a-download-404.html";
+ document.body.appendChild(errorFrame);
+}, "Do not navigate to 404 for anchor with download");
+</script>
+</body>
diff --git a/testing/web-platform/tests/html/semantics/text-level-semantics/the-a-element/a-download-click-redirect-to-javascript.html b/testing/web-platform/tests/html/semantics/text-level-semantics/the-a-element/a-download-click-redirect-to-javascript.html
new file mode 100644
index 0000000000..09f63b6f4d
--- /dev/null
+++ b/testing/web-platform/tests/html/semantics/text-level-semantics/the-a-element/a-download-click-redirect-to-javascript.html
@@ -0,0 +1,29 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>Clicking on an &lt;a> element with a download attribute and href that redirects to 'javascript:' should not navigate or execute</title>
+<link rel="help" href="https://html.spec.whatwg.org/multipage/#the-a-element:activation-behaviour">
+<link rel="help" href="https://html.spec.whatwg.org/multipage/links.html#attr-hyperlink-download">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<body>
+<script>
+"use strict";
+async_test(t => {
+ const errorFrame = document.createElement("iframe");
+
+ errorFrame.addEventListener("load", t.step_func(function () {
+ assert_false(errorFrame.contentWindow.executed);
+ errorFrame.contentWindow.addEventListener(
+ "beforeunload", t.unreached_func("Page should not navigate."));
+
+ errorFrame.contentDocument.querySelector("#error-url").click();
+ t.step_timeout(_ => {
+ assert_false(errorFrame.contentWindow.executed, "Redirecting to javascript: was suppressed.");
+ t.done();
+ }, 1000);
+ }));
+ errorFrame.src = "resources/a-download-redirect-to-javascript.html";
+ document.body.appendChild(errorFrame);
+}, "Do not navigate or execute JS when redirecting a download to 'javascript:..'");
+</script>
+</body>
diff --git a/testing/web-platform/tests/html/semantics/text-level-semantics/the-a-element/a-download-click.html b/testing/web-platform/tests/html/semantics/text-level-semantics/the-a-element/a-download-click.html
new file mode 100644
index 0000000000..22d329f245
--- /dev/null
+++ b/testing/web-platform/tests/html/semantics/text-level-semantics/the-a-element/a-download-click.html
@@ -0,0 +1,33 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>Clicking on an &lt;a> element with a download attribute must not throw an exception</title>
+<link rel="author" title="Domenic Denicola" href="mailto:d@domenic.me">
+<link rel="help" href="https://html.spec.whatwg.org/multipage/#the-a-element:activation-behaviour">
+<link rel="help" href="https://github.com/whatwg/html/issues/2116">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+
+<body>
+<script>
+"use strict";
+async_test(t => {
+ const frame = document.createElement("iframe");
+
+ frame.addEventListener("load", t.step_func(function () {
+ frame.contentWindow.addEventListener(
+ "beforeunload", t.unreached_func("Navigated instead of downloading"));
+ const string = "test";
+ const blob = new Blob([string], { type: "text/html" });
+
+ const link = frame.contentDocument.querySelector("#blob-url");
+ link.href = URL.createObjectURL(blob);
+
+ link.click();
+
+ t.step_timeout(() => t.done(), 1000);
+ }));
+ frame.src = "resources/a-download-click.html";
+ document.body.appendChild(frame);
+}, "Clicking on an <a> element with a download attribute must not throw an exception");
+</script>
+</body>
diff --git a/testing/web-platform/tests/html/semantics/text-level-semantics/the-a-element/a-stringifier.html b/testing/web-platform/tests/html/semantics/text-level-semantics/the-a-element/a-stringifier.html
new file mode 100644
index 0000000000..1085a74aa6
--- /dev/null
+++ b/testing/web-platform/tests/html/semantics/text-level-semantics/the-a-element/a-stringifier.html
@@ -0,0 +1,16 @@
+<!DOCTYPE html>
+<title>HTMLAnchorElement stringifier</title>
+<link rel="author" title="Ms2ger" href="mailto:ms2ger@gmail.com">
+<link rel="help" href="https://webidl.spec.whatwg.org/#es-stringifier">
+<script src=/resources/testharness.js></script>
+<script src=/resources/testharnessreport.js></script>
+<script src=/common/stringifiers.js></script>
+<div id=log></div>
+<script>
+test(function() {
+ test_stringifier_attribute(document.createElement("a"), "href", false);
+ var a = document.createElement("a");
+ a.setAttribute("href", "foo");
+ test_stringifier_attribute(a, "href", false);
+});
+</script>
diff --git a/testing/web-platform/tests/html/semantics/text-level-semantics/the-a-element/a.text-getter-01.html b/testing/web-platform/tests/html/semantics/text-level-semantics/the-a-element/a.text-getter-01.html
new file mode 100644
index 0000000000..e0bb73be0f
--- /dev/null
+++ b/testing/web-platform/tests/html/semantics/text-level-semantics/the-a-element/a.text-getter-01.html
@@ -0,0 +1,34 @@
+<!DOCTYPE html>
+<title>HTMLAnchorElement.text getting</title>
+<link rel="author" title="Ms2ger" href="mailto:ms2ger@gmail.com">
+<link rel="help" href="https://html.spec.whatwg.org/multipage/#dom-a-text">
+<script src=/resources/testharness.js></script>
+<script src=/resources/testharnessreport.js></script>
+<div id=log></div>
+<script>var b</script>
+<div id="test">
+<a href="a">a b c </a>
+<a href="b">a <!--b-->b c </a>
+<a href="c">a <b>b</b> c </a>
+<a href="d">a <script>b</script> c </a>
+<script>
+var e = document.getElementById("test")
+ .appendChild(document.createElement("a"));
+e.href = "d";
+e.appendChild(document.createTextNode("a "));
+e.appendChild(document.createTextNode("b "));
+e.appendChild(document.createTextNode("c "));
+</script>
+</div>
+<script>
+test(function() {
+ var list = document.getElementById("test")
+ .getElementsByTagName("a");
+ for (var i = 0, il = list.length; i < il; ++i) {
+ test(function() {
+ assert_equals(list[i].text, list[i].textContent);
+ assert_equals(list[i].text, "a b c ");
+ }, "Test for anchor " + i);
+ }
+});
+</script>
diff --git a/testing/web-platform/tests/html/semantics/text-level-semantics/the-a-element/a.text-setter-01.html b/testing/web-platform/tests/html/semantics/text-level-semantics/the-a-element/a.text-setter-01.html
new file mode 100644
index 0000000000..879a9e3d08
--- /dev/null
+++ b/testing/web-platform/tests/html/semantics/text-level-semantics/the-a-element/a.text-setter-01.html
@@ -0,0 +1,41 @@
+<!DOCTYPE html>
+<title>HTMLAnchorElement.text setting</title>
+<link rel="author" title="Ms2ger" href="mailto:ms2ger@gmail.com">
+<link rel="help" href="https://html.spec.whatwg.org/multipage/#dom-a-text">
+<script src=/resources/testharness.js></script>
+<script src=/resources/testharnessreport.js></script>
+<div id=log></div>
+<div id="test">
+<a href="a">a b c</a>
+<a href="b">a <!--b--> c</a>
+<a href="c">a <b>b</b> c</a>
+<script>
+var d = document.getElementById("test")
+ .appendChild(document.createElement("a"));
+d.href = "d";
+d.appendChild(document.createTextNode("a "));
+d.appendChild(document.createTextNode("b "));
+d.appendChild(document.createTextNode("c "));
+</script>
+</div>
+<script>
+test(function() {
+ var list = document.getElementById("test")
+ .getElementsByTagName("a");
+ for (var i = 0, il = list.length; i < il; ++i) {
+ test(function() {
+ list[i].text = "x";
+ assert_equals(list[i].text, "x");
+ assert_equals(list[i].textContent, "x");
+ assert_equals(list[i].firstChild.data, "x");
+ assert_equals(list[i].childNodes.length, 1);
+
+ list[i].textContent = "y";
+ assert_equals(list[i].text, "y");
+ assert_equals(list[i].textContent, "y");
+ assert_equals(list[i].firstChild.data, "y");
+ assert_equals(list[i].childNodes.length, 1);
+ }, "Test for anchor " + i);
+ }
+});
+</script>
diff --git a/testing/web-platform/tests/html/semantics/text-level-semantics/the-a-element/resources/a-download-404.html b/testing/web-platform/tests/html/semantics/text-level-semantics/the-a-element/resources/a-download-404.html
new file mode 100644
index 0000000000..8c5d8f4565
--- /dev/null
+++ b/testing/web-platform/tests/html/semantics/text-level-semantics/the-a-element/resources/a-download-404.html
@@ -0,0 +1,2 @@
+<!doctype html>
+<a id="error-url" href="../a-download-404.py" download="html.html">Click me</a>
diff --git a/testing/web-platform/tests/html/semantics/text-level-semantics/the-a-element/resources/a-download-click.html b/testing/web-platform/tests/html/semantics/text-level-semantics/the-a-element/resources/a-download-click.html
new file mode 100644
index 0000000000..7d36c21d1e
--- /dev/null
+++ b/testing/web-platform/tests/html/semantics/text-level-semantics/the-a-element/resources/a-download-click.html
@@ -0,0 +1,2 @@
+<!doctype html>
+<a id="blob-url" download="foo.html">Click me</a>
diff --git a/testing/web-platform/tests/html/semantics/text-level-semantics/the-a-element/resources/a-download-redirect-to-javascript.html b/testing/web-platform/tests/html/semantics/text-level-semantics/the-a-element/resources/a-download-redirect-to-javascript.html
new file mode 100644
index 0000000000..4ff8b61e3b
--- /dev/null
+++ b/testing/web-platform/tests/html/semantics/text-level-semantics/the-a-element/resources/a-download-redirect-to-javascript.html
@@ -0,0 +1,5 @@
+<!doctype html>
+<script>
+ window.executed = false;
+</script>
+<a id="error-url" href="/common/redirect.py?location=javascript:window.executed=true" download="html.html">Click me</a>
diff --git a/testing/web-platform/tests/html/semantics/text-level-semantics/the-a-element/resources/a-onclick-handler-iframe.html b/testing/web-platform/tests/html/semantics/text-level-semantics/the-a-element/resources/a-onclick-handler-iframe.html
new file mode 100644
index 0000000000..711e40f9d4
--- /dev/null
+++ b/testing/web-platform/tests/html/semantics/text-level-semantics/the-a-element/resources/a-onclick-handler-iframe.html
@@ -0,0 +1 @@
+<a id="a" href="about:blank" onclick="return false">link</a>
diff --git a/testing/web-platform/tests/html/semantics/text-level-semantics/the-b-element/b-usage-notref.html b/testing/web-platform/tests/html/semantics/text-level-semantics/the-b-element/b-usage-notref.html
new file mode 100644
index 0000000000..3d3c46a281
--- /dev/null
+++ b/testing/web-platform/tests/html/semantics/text-level-semantics/the-b-element/b-usage-notref.html
@@ -0,0 +1,6 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>HTML Reference File</title>
+<link rel="author" title="Intel" href="http://www.intel.com/">
+
+<p>You enter a small room. Your sword glows brighter. A rat scurries past the corner wall.</p>
diff --git a/testing/web-platform/tests/html/semantics/text-level-semantics/the-b-element/b-usage.html b/testing/web-platform/tests/html/semantics/text-level-semantics/the-b-element/b-usage.html
new file mode 100644
index 0000000000..ff2105dcae
--- /dev/null
+++ b/testing/web-platform/tests/html/semantics/text-level-semantics/the-b-element/b-usage.html
@@ -0,0 +1,8 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>HTML test: b - highlight keywords</title>
+<link rel="author" title="Intel" href="http://www.intel.com/">
+<link rel="mismatch" href="b-usage-notref.html">
+<link rel="help" href="https://html.spec.whatwg.org/multipage/text-level-semantics.html#the-b-element"/>
+
+<p>You enter a small room. Your <b>sword</b> glows brighter. A <b>rat</b> scurries past the corner wall.</p>
diff --git a/testing/web-platform/tests/html/semantics/text-level-semantics/the-bdi-element/bdi-auto-dir-default-ref.html b/testing/web-platform/tests/html/semantics/text-level-semantics/the-bdi-element/bdi-auto-dir-default-ref.html
new file mode 100644
index 0000000000..eff61bb419
--- /dev/null
+++ b/testing/web-platform/tests/html/semantics/text-level-semantics/the-bdi-element/bdi-auto-dir-default-ref.html
@@ -0,0 +1,36 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8">
+ <link rel="author" title="Aharon Lanin" href="mailto:aharon@google.com">
+ <link rel="author" title="HTML5 bidi test WG" href="mailto:html5bidi@googlegroups.com">
+ <style>
+ body{
+ font-size:2em;
+ }
+ .test, .ref {
+ border: medium solid gray;
+ width: 500px;
+ margin: 20px;
+ }
+ .comments { display: none; }
+ </style>
+ </head>
+ <body>
+ <div class="instructions"><p>Test passes if the two boxes below look exactly the same.</p></div>
+ <div class="comments">
+ Key to entities used below:
+ &#x05D0; ... &#x05D5; - The first six Hebrew letters (strongly RTL).
+ &#x202D; - The LRO (left-to-right override) formatting character.
+ &#x202C; - The PDF (pop directional formatting) formatting character; closes LRO.
+ </div>
+ <div class="test">
+ <div dir="ltr">&#x202D;[:)], [+- a &#x05D1;], [d &#x05D2; 1]...&#x202C;</div>
+ <div dir="rtl">&#x202D;...[d &#x05D2; 1] ,[+- a &#x05D1;] ,[:)]&#x202C;</div>
+ </div>
+ <div class="ref">
+ <div dir="ltr">&#x202D;[:)], [+- a &#x05D1;], [d &#x05D2; 1]...&#x202C;</div>
+ <div dir="rtl">&#x202D;...[d &#x05D2; 1] ,[+- a &#x05D1;] ,[:)]&#x202C;</div>
+ </div>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/html/semantics/text-level-semantics/the-bdi-element/bdi-auto-dir-default.html b/testing/web-platform/tests/html/semantics/text-level-semantics/the-bdi-element/bdi-auto-dir-default.html
new file mode 100644
index 0000000000..e658500a4e
--- /dev/null
+++ b/testing/web-platform/tests/html/semantics/text-level-semantics/the-bdi-element/bdi-auto-dir-default.html
@@ -0,0 +1,46 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8"/>
+ <title>HTML Test: BDI: has dir=auto by default</title>
+ <link rel="match" href="bdi-auto-dir-default-ref.html"/>
+ <link rel="author" title="Aharon Lanin" href="mailto:aharon@google.com"/>
+ <link rel="author" title="HTML5 bidi test WG" href="mailto:html5bidi@googlegroups.com"/>
+ <link rel="help" href="https://html.spec.whatwg.org/multipage/#the-bdi-element"/>
+ <meta name="assert" content="
+ 'The dir global attribute defaults to auto on this element (it never inherits from the parent
+ element like with other elements).'"/>
+ <style>
+ body{
+ font-size:2em;
+ }
+ .test, .ref {
+ border: medium solid gray;
+ width: 500px;
+ margin: 20px;
+ }
+ .comments { display: none; }
+ </style>
+ </head>
+ <body>
+ <div class="instructions"><p>Test passes if the two boxes below look exactly the same.</p></div>
+ <div class="comments">
+ Key to entities used below:
+ &#x05D0; ... &#x05D5; - The first six Hebrew letters (strongly RTL).
+ &#x202D; - The LRO (left-to-right override) formatting character.
+ &#x202C; - The PDF (pop directional formatting) formatting character; closes LRO.
+ In each DIV of the test:
+ - the first BDI, having no characters with strong direction, should be LTR by default;
+ - the second BDI, having an LTR character first, should be LTR by default;
+ - the third BDI, having an RTL character first, should be RTL by default.
+ </div>
+ <div class="test">
+ <div dir="ltr"><bdi>[:)]</bdi>, <bdi>[+- a &#x05D1;]</bdi>, <bdi>[1 &#x05D2; d]</bdi>...</div>
+ <div dir="rtl"><bdi>[:)]</bdi>, <bdi>[+- a &#x05D1;]</bdi>, <bdi>[1 &#x05D2; d]</bdi>...</div>
+ </div>
+ <div class="ref">
+ <div dir="ltr">&#x202D;[:)], [+- a &#x05D1;], [d &#x05D2; 1]...&#x202C;</div>
+ <div dir="rtl">&#x202D;...[d &#x05D2; 1] ,[+- a &#x05D1;] ,[:)]&#x202C;</div>
+ </div>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/html/semantics/text-level-semantics/the-bdi-element/bdi-neutral-missing-pdf-ref.html b/testing/web-platform/tests/html/semantics/text-level-semantics/the-bdi-element/bdi-neutral-missing-pdf-ref.html
new file mode 100644
index 0000000000..b4d44c5101
--- /dev/null
+++ b/testing/web-platform/tests/html/semantics/text-level-semantics/the-bdi-element/bdi-neutral-missing-pdf-ref.html
@@ -0,0 +1,44 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8">
+ <link rel="author" title="Aharon Lanin" href="mailto:aharon@google.com">
+ <link rel="author" title="HTML5 bidi test WG" href="mailto:html5bidi@googlegroups.com">
+ <style>
+ body{
+ font-size:2em;
+ }
+ .test, .ref {
+ border: medium solid gray;
+ width: 400px;
+ margin: 20px;
+ }
+ .comments { display: none; }
+ </style>
+ </head>
+ <body>
+ <div class="instructions"><p>Test passes if the two boxes below look exactly the same.</p></div>
+ <div class="comments">
+ Key to entities used below:
+ &#x05D0; ... &#x05D5; - The first six Hebrew letters (strongly RTL).
+ &#x202D; - The LRO (left-to-right override) formatting character.
+ &#x202C; - The PDF (pop directional formatting) formatting character; closes LRO.
+ </div>
+ <div class="test">
+ <div dir="ltr">&#x202D;cb&#x05D0;de...&#x202C;</div>
+ <div dir="ltr">&#x202D;cb&#x05D0;de...&#x202C;</div>
+ <div dir="ltr">&#x202D;cb&#x05D0;de...&#x202C;</div>
+ <div dir="rtl">&#x202D;...&#x05D4;&#x05D3;a&#x05D1;&#x05D2;&#x202C;</div>
+ <div dir="rtl">&#x202D;...&#x05D4;&#x05D3;a&#x05D1;&#x05D2;&#x202C;</div>
+ <div dir="rtl">&#x202D;...&#x05D4;&#x05D3;a&#x05D1;&#x05D2;&#x202C;</div>
+ </div>
+ <div class="ref">
+ <div dir="ltr">&#x202D;cb&#x05D0;de...&#x202C;</div>
+ <div dir="ltr">&#x202D;cb&#x05D0;de...&#x202C;</div>
+ <div dir="ltr">&#x202D;cb&#x05D0;de...&#x202C;</div>
+ <div dir="rtl">&#x202D;...&#x05D4;&#x05D3;a&#x05D1;&#x05D2;&#x202C;</div>
+ <div dir="rtl">&#x202D;...&#x05D4;&#x05D3;a&#x05D1;&#x05D2;&#x202C;</div>
+ <div dir="rtl">&#x202D;...&#x05D4;&#x05D3;a&#x05D1;&#x05D2;&#x202C;</div>
+ </div>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/html/semantics/text-level-semantics/the-bdi-element/bdi-neutral-missing-pdf.html b/testing/web-platform/tests/html/semantics/text-level-semantics/the-bdi-element/bdi-neutral-missing-pdf.html
new file mode 100644
index 0000000000..1ce9da6b76
--- /dev/null
+++ b/testing/web-platform/tests/html/semantics/text-level-semantics/the-bdi-element/bdi-neutral-missing-pdf.html
@@ -0,0 +1,56 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8"/>
+ <title>HTML Test: BDI: neutral when contains LRO or RLO without PDF</title>
+ <link rel="match" href="bdi-neutral-missing-pdf-ref.html"/>
+ <link rel="author" title="Aharon Lanin" href="mailto:aharon@google.com"/>
+ <link rel="author" title="HTML5 bidi test WG" href="mailto:html5bidi@googlegroups.com"/>
+ <link rel="help" href="https://html.spec.whatwg.org/multipage/#the-bdi-element"/>
+ <meta name="assert" content="
+ 'For the purposes of applying the bidirectional algorithm to the paragraph-level
+ container that a bdi element finds itself within, the bdi element must be treated
+ like a U+FFFC OBJECT REPLACEMENT CHARACTER.'
+ Thus, if a BDI contains LRO or RLO characters lacking a matching PDF, these must not affect
+ the visual ordering of the content outside the BDI."/>
+ <style>
+ body{
+ font-size:2em;
+ }
+ .test, .ref {
+ border: medium solid gray;
+ width: 400px;
+ margin: 20px;
+ }
+ .comments { display: none; }
+ </style>
+ </head>
+ <body>
+ <div class="instructions"><p>Test passes if the two boxes below look exactly the same.</p></div>
+ <div class="comments">
+ Key to entities used below:
+ &#x05D0; ... &#x05D5; - The first six Hebrew letters (strongly RTL).
+ &#x202D; - The LRO (left-to-right override) formatting character.
+ &#x202E; - the RLO (right-to-left-override) formatting character.
+ &#x202C; - The PDF (pop directional formatting) formatting character; closes LRO and RLO.
+ If the BDI in the test's first DIV were a SPAN, the RLO it contains, not being closed by a
+ PDF, would visually reorder the de into ed.
+ </div>
+ <div class="test">
+ <div dir="ltr"><bdi>&#x05D0;&#x202E;bc</bdi>de...</div>
+ <div dir="ltr"><bdi dir="ltr">&#x05D0;&#x202E;bc</bdi>de...</div>
+ <div dir="ltr"><bdi dir="rtl">&#x05D0;&#x202E;bc</bdi>de...</div>
+ <div dir="rtl"><bdi>a&#x202D;&#x05D1;&#x05D2;</bdi>&#x05D3;&#x05D4;...</div>
+ <div dir="rtl"><bdi dir="ltr">a&#x202D;&#x05D1;&#x05D2;</bdi>&#x05D3;&#x05D4;...</div>
+ <div dir="rtl"><bdi dir="rtl">a&#x202D;&#x05D1;&#x05D2;</bdi>&#x05D3;&#x05D4;...</div>
+ </div>
+ <div class="ref">
+ <div dir="ltr">&#x202D;cb&#x05D0;de...&#x202C;</div>
+ <div dir="ltr">&#x202D;cb&#x05D0;de...&#x202C;</div>
+ <div dir="ltr">&#x202D;cb&#x05D0;de...&#x202C;</div>
+ <div dir="rtl">&#x202D;...&#x05D4;&#x05D3;a&#x05D1;&#x05D2;&#x202C;</div>
+ <div dir="rtl">&#x202D;...&#x05D4;&#x05D3;a&#x05D1;&#x05D2;&#x202C;</div>
+ <div dir="rtl">&#x202D;...&#x05D4;&#x05D3;a&#x05D1;&#x05D2;&#x202C;</div>
+ </div>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/html/semantics/text-level-semantics/the-bdi-element/bdi-neutral-nested-ref.html b/testing/web-platform/tests/html/semantics/text-level-semantics/the-bdi-element/bdi-neutral-nested-ref.html
new file mode 100644
index 0000000000..d5d7674a45
--- /dev/null
+++ b/testing/web-platform/tests/html/semantics/text-level-semantics/the-bdi-element/bdi-neutral-nested-ref.html
@@ -0,0 +1,44 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8">
+ <link rel="author" title="Aharon Lanin" href="mailto:aharon@google.com">
+ <link rel="author" title="HTML5 bidi test WG" href="mailto:html5bidi@googlegroups.com">
+ <style>
+ body{
+ font-size:2em;
+ }
+ .test, .ref {
+ border: medium solid gray;
+ width: 500px;
+ margin: 20px;
+ }
+ .comments { display: none; }
+ </style>
+ </head>
+ <body>
+ <div class="instructions"><p>Test passes if the two boxes below look exactly the same.</p></div>
+ <div class="comments">
+ Key to entities used below:
+ &#x05D0; ... &#x05D5; - The first six Hebrew letters (strongly RTL).
+ &#x202D; - The LRO (left-to-right override) formatting character.
+ &#x202C; - The PDF (pop directional formatting) formatting character; closes LRO.
+ </div>
+ <div class="test">
+ <div dir="ltr">&#x202D;1 + [a + [3 + [b + 4] + &#x05D1;] + 2] + &#x05D0;&#x202C;</div>
+ <div dir="ltr">&#x202D;1 + [a + [3 + [b + 4] + &#x05D1;] + 2] + &#x05D0;&#x202C;</div>
+ <div dir="ltr">&#x202D;1 + [a + [3 + [b + 4] + &#x05D1;] + 2] + &#x05D0;&#x202C;</div>
+ <div dir="rtl">&#x202D;a + [1 + [b + [3 + &#x05D1;] + 2] + &#x05D0;] + 0&#x202C;</div>
+ <div dir="rtl">&#x202D;a + [1 + [b + [3 + &#x05D1;] + 2] + &#x05D0;] + 0&#x202C;</div>
+ <div dir="rtl">&#x202D;a + [1 + [b + [3 + &#x05D1;] + 2] + &#x05D0;] + 0&#x202C;</div>
+ </div>
+ <div class="ref">
+ <div dir="ltr">&#x202D;1 + [a + [3 + [b + 4] + &#x05D1;] + 2] + &#x05D0;&#x202C;</div>
+ <div dir="ltr">&#x202D;1 + [a + [3 + [b + 4] + &#x05D1;] + 2] + &#x05D0;&#x202C;</div>
+ <div dir="ltr">&#x202D;1 + [a + [3 + [b + 4] + &#x05D1;] + 2] + &#x05D0;&#x202C;</div>
+ <div dir="rtl">&#x202D;a + [1 + [b + [3 + &#x05D1;] + 2] + &#x05D0;] + 0&#x202C;</div>
+ <div dir="rtl">&#x202D;a + [1 + [b + [3 + &#x05D1;] + 2] + &#x05D0;] + 0&#x202C;</div>
+ <div dir="rtl">&#x202D;a + [1 + [b + [3 + &#x05D1;] + 2] + &#x05D0;] + 0&#x202C;</div>
+ </div>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/html/semantics/text-level-semantics/the-bdi-element/bdi-neutral-nested.html b/testing/web-platform/tests/html/semantics/text-level-semantics/the-bdi-element/bdi-neutral-nested.html
new file mode 100644
index 0000000000..158576885c
--- /dev/null
+++ b/testing/web-platform/tests/html/semantics/text-level-semantics/the-bdi-element/bdi-neutral-nested.html
@@ -0,0 +1,52 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8"/>
+ <title>HTML Test: BDI: neutral when nested</title>
+ <link rel="match" href="bdi-neutral-nested-ref.html"/>
+ <link rel="author" title="Aharon Lanin" href="mailto:aharon@google.com"/>
+ <link rel="author" title="HTML5 bidi test WG" href="mailto:html5bidi@googlegroups.com"/>
+ <link rel="help" href="https://html.spec.whatwg.org/multipage/#the-bdi-element"/>
+ <meta name="assert" content="
+ 'For the purposes of applying the bidirectional algorithm to the paragraph-level
+ container that a bdi element finds itself within, the bdi element must be treated
+ like a U+FFFC OBJECT REPLACEMENT CHARACTER.'
+ This must apply when a BDI is nested within a BDI."/>
+ <style>
+ body{
+ font-size:2em;
+ }
+ .test, .ref {
+ border: medium solid gray;
+ width: 500px;
+ margin: 20px;
+ }
+ .comments { display: none; }
+ </style>
+ </head>
+ <body>
+ <div class="instructions"><p>Test passes if the two boxes below look exactly the same.</p></div>
+ <div class="comments">
+ Key to entities used below:
+ &#x05D0; ... &#x05D5; - The first six Hebrew letters (strongly RTL).
+ &#x202D; - The LRO (left-to-right override) formatting character.
+ &#x202C; - The PDF (pop directional formatting) formatting character; closes LRO.
+ </div>
+ <div class="test">
+ <div dir="ltr">&#x05D0; + <bdi>[a + <bdi>[&#x05D1; + <bdi>[b + 4]</bdi> + 3]</bdi> + 2]</bdi> + 1</div>
+ <div dir="ltr">&#x05D0; + <bdi dir="rtl">[a + <bdi dir="ltr">[&#x05D1; + <bdi dir="rtl">[b + 4]</bdi> + 3]</bdi> + 2]</bdi> + 1</div>
+ <div dir="ltr">&#x05D0; + <bdi dir="ltr">[a + <bdi dir="rtl">[&#x05D1; + <bdi dir="ltr">[b + 4]</bdi> + 3]</bdi> + 2]</bdi> + 1</div>
+ <div dir="rtl">a + <bdi>[&#x05D0; + <bdi>[b + <bdi>[&#x05D1; + 3]</bdi> + 2]</bdi> + 1]</bdi> + 0</div>
+ <div dir="rtl">a + <bdi dir="ltr">[&#x05D0; + <bdi dir="rtl">[b + <bdi dir="ltr">[&#x05D1; + 3]</bdi> + 2]</bdi> + 1]</bdi> + 0</div>
+ <div dir="rtl">a + <bdi dir="rtl">[&#x05D0; + <bdi dir="ltr">[b + <bdi dir="rtl">[&#x05D1; + 3]</bdi> + 2]</bdi> + 1]</bdi> + 0</div>
+ </div>
+ <div class="ref">
+ <div dir="ltr">&#x202D;1 + [a + [3 + [b + 4] + &#x05D1;] + 2] + &#x05D0;&#x202C;</div>
+ <div dir="ltr">&#x202D;1 + [a + [3 + [b + 4] + &#x05D1;] + 2] + &#x05D0;&#x202C;</div>
+ <div dir="ltr">&#x202D;1 + [a + [3 + [b + 4] + &#x05D1;] + 2] + &#x05D0;&#x202C;</div>
+ <div dir="rtl">&#x202D;a + [1 + [b + [3 + &#x05D1;] + 2] + &#x05D0;] + 0&#x202C;</div>
+ <div dir="rtl">&#x202D;a + [1 + [b + [3 + &#x05D1;] + 2] + &#x05D0;] + 0&#x202C;</div>
+ <div dir="rtl">&#x202D;a + [1 + [b + [3 + &#x05D1;] + 2] + &#x05D0;] + 0&#x202C;</div>
+ </div>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/html/semantics/text-level-semantics/the-bdi-element/bdi-neutral-number-ref.html b/testing/web-platform/tests/html/semantics/text-level-semantics/the-bdi-element/bdi-neutral-number-ref.html
new file mode 100644
index 0000000000..df7af7778a
--- /dev/null
+++ b/testing/web-platform/tests/html/semantics/text-level-semantics/the-bdi-element/bdi-neutral-number-ref.html
@@ -0,0 +1,44 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8">
+ <link rel="author" title="Aharon Lanin" href="mailto:aharon@google.com">
+ <link rel="author" title="HTML5 bidi test WG" href="mailto:html5bidi@googlegroups.com">
+ <style>
+ body{
+ font-size:2em;
+ }
+ .test, .ref {
+ border: medium solid gray;
+ width: 400px;
+ margin: 20px;
+ }
+ .comments { display: none; }
+ </style>
+ </head>
+ <body>
+ <div class="instructions"><p>Test passes if the two boxes below look exactly the same.</p></div>
+ <div class="comments">
+ Key to entities used below:
+ &#x05D0; ... &#x05D5; - The first six Hebrew letters (strongly RTL).
+ &#x202D; - The LRO (left-to-right override) formatting character.
+ &#x202C; - The PDF (pop directional formatting) formatting character; closes LRO.
+ </div>
+ <div class="test">
+ <div dir="ltr">&#x202D;&#x05D0; - [1]...&#x202C;</div>
+ <div dir="ltr">&#x202D;&#x05D0; - [1]...&#x202C;</div>
+ <div dir="ltr">&#x202D;&#x05D0; - [1]...&#x202C;</div>
+ <div dir="rtl">&#x202D;...[1] - a&#x202C;</div>
+ <div dir="rtl">&#x202D;...[1] - a&#x202C;</div>
+ <div dir="rtl">&#x202D;...[1] - a&#x202C;</div>
+ </div>
+ <div class="ref">
+ <div dir="ltr">&#x202D;&#x05D0; - [1]...&#x202C;</div>
+ <div dir="ltr">&#x202D;&#x05D0; - [1]...&#x202C;</div>
+ <div dir="ltr">&#x202D;&#x05D0; - [1]...&#x202C;</div>
+ <div dir="rtl">&#x202D;...[1] - a&#x202C;</div>
+ <div dir="rtl">&#x202D;...[1] - a&#x202C;</div>
+ <div dir="rtl">&#x202D;...[1] - a&#x202C;</div>
+ </div>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/html/semantics/text-level-semantics/the-bdi-element/bdi-neutral-number.html b/testing/web-platform/tests/html/semantics/text-level-semantics/the-bdi-element/bdi-neutral-number.html
new file mode 100644
index 0000000000..37e467c173
--- /dev/null
+++ b/testing/web-platform/tests/html/semantics/text-level-semantics/the-bdi-element/bdi-neutral-number.html
@@ -0,0 +1,53 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8"/>
+ <title>HTML Test: BDI: neutral when number</title>
+ <link rel="match" href="bdi-neutral-number-ref.html"/>
+ <link rel="author" title="Aharon Lanin" href="mailto:aharon@google.com"/>
+ <link rel="author" title="HTML5 bidi test WG" href="mailto:html5bidi@googlegroups.com"/>
+ <link rel="help" href="https://html.spec.whatwg.org/multipage/#the-bdi-element"/>
+ <meta name="assert" content="
+ 'For the purposes of applying the bidirectional algorithm to the paragraph-level
+ container that a bdi element finds itself within, the bdi element must be treated
+ like a U+FFFC OBJECT REPLACEMENT CHARACTER.'"/>
+ <style>
+ body{
+ font-size:2em;
+ }
+ .test, .ref {
+ border: medium solid gray;
+ width: 400px;
+ margin: 20px;
+ }
+ .comments { display: none; }
+ </style>
+ </head>
+ <body>
+ <div class="instructions"><p>Test passes if the two boxes below look exactly the same.</p></div>
+ <div class="comments">
+ Key to entities used below:
+ &#x05D0; ... &#x05D5; - The first six Hebrew letters (strongly RTL).
+ &#x202D; - The LRO (left-to-right override) formatting character.
+ &#x202C; - The PDF (pop directional formatting) formatting character; closes LRO.
+ If the BDI in the test's first DIV were a SPAN, the 1 inside it would be visually ordered
+ to the left of the &#x05D0;.
+ </div>
+ <div class="test">
+ <div dir="ltr">&#x05D0; - <bdi>[1]</bdi>...</div>
+ <div dir="ltr">&#x05D0; - <bdi dir="ltr">[1]</bdi>...</div>
+ <div dir="ltr">&#x05D0; - <bdi dir="rtl">[1]</bdi>...</div>
+ <div dir="rtl">a - <bdi>[1]</bdi>...</div>
+ <div dir="rtl">a - <bdi dir="ltr">[1]</bdi>...</div>
+ <div dir="rtl">a - <bdi dir="rtl">[1]</bdi>...</div>
+ </div>
+ <div class="ref">
+ <div dir="ltr">&#x202D;&#x05D0; - [1]...&#x202C;</div>
+ <div dir="ltr">&#x202D;&#x05D0; - [1]...&#x202C;</div>
+ <div dir="ltr">&#x202D;&#x05D0; - [1]...&#x202C;</div>
+ <div dir="rtl">&#x202D;...[1] - a&#x202C;</div>
+ <div dir="rtl">&#x202D;...[1] - a&#x202C;</div>
+ <div dir="rtl">&#x202D;...[1] - a&#x202C;</div>
+ </div>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/html/semantics/text-level-semantics/the-bdi-element/bdi-neutral-separate-ref.html b/testing/web-platform/tests/html/semantics/text-level-semantics/the-bdi-element/bdi-neutral-separate-ref.html
new file mode 100644
index 0000000000..ec8e34627d
--- /dev/null
+++ b/testing/web-platform/tests/html/semantics/text-level-semantics/the-bdi-element/bdi-neutral-separate-ref.html
@@ -0,0 +1,36 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8">
+ <link rel="author" title="Aharon Lanin" href="mailto:aharon@google.com">
+ <link rel="author" title="HTML5 bidi test WG" href="mailto:html5bidi@googlegroups.com">
+ <style>
+ body{
+ font-size:2em;
+ }
+ .test, .ref {
+ border: medium solid gray;
+ width: 500px;
+ margin: 20px;
+ }
+ .comments { display: none; }
+ </style>
+ </head>
+ <body>
+ <div class="instructions"><p>Test passes if the two boxes below look exactly the same.</p></div>
+ <div class="comments">
+ Key to entities used below:
+ &#x05D0; ... &#x05D5; - The first six Hebrew letters (strongly RTL).
+ &#x202D; - The LRO (left-to-right override) formatting character.
+ &#x202C; - The PDF (pop directional formatting) formatting character; closes LRO.
+ </div>
+ <div class="test">
+ <div dir="ltr">&#x202D;&#x05D0; [1 b] c [d &#x05D4;] &#x05D5;...&#x202C;</div>
+ <div dir="rtl">&#x202D;...f [e &#x05D3;] &#x05D2; [&#x05D1; 1] a&#x202C;</div>
+ </div>
+ <div class="ref">
+ <div dir="ltr">&#x202D;&#x05D0; [1 b] c [d &#x05D4;] &#x05D5;...&#x202C;</div>
+ <div dir="rtl">&#x202D;...f [e &#x05D3;] &#x05D2; [&#x05D1; 1] a&#x202C;</div>
+ </div>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/html/semantics/text-level-semantics/the-bdi-element/bdi-neutral-separate.html b/testing/web-platform/tests/html/semantics/text-level-semantics/the-bdi-element/bdi-neutral-separate.html
new file mode 100644
index 0000000000..7bb8a20811
--- /dev/null
+++ b/testing/web-platform/tests/html/semantics/text-level-semantics/the-bdi-element/bdi-neutral-separate.html
@@ -0,0 +1,47 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8"/>
+ <title>HTML Test: BDI: paragraph-level container</title>
+ <link rel="match" href="bdi-neutral-separate-ref.html"/>
+ <link rel="author" title="Aharon Lanin" href="mailto:aharon@google.com"/>
+ <link rel="author" title="HTML5 bidi test WG" href="mailto:html5bidi@googlegroups.com"/>
+ <link rel="help" href="https://html.spec.whatwg.org/multipage/#the-bdi-element"/>
+ <meta name="assert" content="
+ 'For the purposes of applying the bidirectional algorithm to the paragraph-level
+ container that a bdi element finds itself within, the bdi element must be treated
+ like a U+FFFC OBJECT REPLACEMENT CHARACTER.'
+ Thus, under no circumstances should any part of the content outside a BDI be visually
+ reordered inside the BDI's content."/>
+ <style>
+ body{
+ font-size:2em;
+ }
+ .test, .ref {
+ border: medium solid gray;
+ width: 500px;
+ margin: 20px;
+ }
+ .comments { display: none; }
+ </style>
+ </head>
+ <body>
+ <div class="instructions"><p>Test passes if the two boxes below look exactly the same.</p></div>
+ <div class="comments">
+ Key to entities used below:
+ &#x05D0; ... &#x05D5; - The first six Hebrew letters (strongly RTL).
+ &#x202D; - The LRO (left-to-right override) formatting character.
+ &#x202C; - The PDF (pop directional formatting) formatting character; closes LRO.
+ If the BDIs in the test's first DIV were just SPANs, the &#x05D0; would appear between the 1
+ and the b, and the &#x05D5; between the d and the &#x05D4;.
+ </div>
+ <div class="test">
+ <div dir="ltr">&#x05D0; <bdi>[1 b]</bdi> c <bdi>[d &#x05D4;]</bdi> &#x05D5;...</div>
+ <div dir="rtl">a <bdi>[1 &#x05D1;]</bdi> &#x05D2; <bdi>[&#x05D3; e]</bdi> f...</div>
+ </div>
+ <div class="ref">
+ <div dir="ltr">&#x202D;&#x05D0; [1 b] c [d &#x05D4;] &#x05D5;...&#x202C;</div>
+ <div dir="rtl">&#x202D;...f [e &#x05D3;] &#x05D2; [&#x05D1; 1] a&#x202C;</div>
+ </div>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/html/semantics/text-level-semantics/the-bdi-element/bdi-neutral-to-another-bdi-1-ref.html b/testing/web-platform/tests/html/semantics/text-level-semantics/the-bdi-element/bdi-neutral-to-another-bdi-1-ref.html
new file mode 100644
index 0000000000..c0f323ea2c
--- /dev/null
+++ b/testing/web-platform/tests/html/semantics/text-level-semantics/the-bdi-element/bdi-neutral-to-another-bdi-1-ref.html
@@ -0,0 +1,47 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8" />
+ <link rel="author" title="Aharon Lanin" href="mailto:aharon@google.com" />
+ <link rel="author" title="Shai Berger" href="mailto:shai@platonix.com" />
+ <link rel="author" title="HTML5 bidi test WG" href="mailto:html5bidi@googlegroups.com" />
+ <style>
+ body{
+ font-size:2em;
+ }
+ .test, .ref {
+ border: medium solid gray;
+ width: 400px;
+ margin: 20px;
+ }
+ .comments {
+ display: none;
+ }
+ </style>
+ </head>
+ <body>
+ <div class="instructions">Test passes if the two boxes below look exactly the same.</div>
+ <div class="comments">
+ Key to entities used below:
+ &#x05D0; ... &#x05D5; - The first six Hebrew letters (strongly RTL).
+ &#x202D; - The LRO (left-to-right override) formatting character.
+ &#x202C; - The PDF (pop directional formatting) formatting character; closes LRO.
+ </div>
+ <div class="test">
+ <div dir="ltr">&#x202D;[&#x05D0;] &gt; [&#x05D1;]...&#x202C;</div>
+ <div dir="ltr">&#x202D;[&#x05D0;] &gt; [&#x05D1;]...&#x202C;</div>
+ <div dir="ltr">&#x202D;[&#x05D0;] &gt; [&#x05D1;]...&#x202C;</div>
+ <div dir="rtl">&#x202D;...[b] &lt; [a]&#x202C;</div>
+ <div dir="rtl">&#x202D;...[b] &lt; [a]&#x202C;</div>
+ <div dir="rtl">&#x202D;...[b] &lt; [a]&#x202C;</div>
+ </div>
+ <div class="ref">
+ <div dir="ltr">&#x202D;[&#x05D0;] &gt; [&#x05D1;]...&#x202C;</div>
+ <div dir="ltr">&#x202D;[&#x05D0;] &gt; [&#x05D1;]...&#x202C;</div>
+ <div dir="ltr">&#x202D;[&#x05D0;] &gt; [&#x05D1;]...&#x202C;</div>
+ <div dir="rtl">&#x202D;...[b] &lt; [a]&#x202C;</div>
+ <div dir="rtl">&#x202D;...[b] &lt; [a]&#x202C;</div>
+ <div dir="rtl">&#x202D;...[b] &lt; [a]&#x202C;</div>
+ </div>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/html/semantics/text-level-semantics/the-bdi-element/bdi-neutral-to-another-bdi-1.html b/testing/web-platform/tests/html/semantics/text-level-semantics/the-bdi-element/bdi-neutral-to-another-bdi-1.html
new file mode 100644
index 0000000000..822120721f
--- /dev/null
+++ b/testing/web-platform/tests/html/semantics/text-level-semantics/the-bdi-element/bdi-neutral-to-another-bdi-1.html
@@ -0,0 +1,58 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8" />
+ <title>HTML Test: BDI: neutral to another BDI</title>
+ <link rel="match" href="bdi-neutral-to-another-bdi-1-ref.html" />
+ <link rel="author" title="Aharon Lanin" href="mailto:aharon@google.com" />
+ <link rel="author" title="Shai Berger" href="mailto:shai@platonix.com" />
+ <link rel="author" title="HTML5 bidi test WG" href="mailto:html5bidi@googlegroups.com" />
+ <link rel="help" href="https://html.spec.whatwg.org/multipage/#the-bdi-element" />
+ <meta name="assert" content="
+ 'For the purposes of applying the bidirectional algorithm to the paragraph-level
+ container that a bdi element finds itself within, the bdi element must be treated
+ like a U+FFFC OBJECT REPLACEMENT CHARACTER.'
+ Thus, when a BDI contains text of the same strong direction as another BDI following it, the
+ two must not form a directional run as would be the case if the BDIs were just SPANs." />
+ <style>
+ body{
+ font-size:2em;
+ }
+ .test, .ref {
+ border: medium solid gray;
+ width: 400px;
+ margin: 20px;
+ }
+ .comments {
+ display: none;
+ }
+ </style>
+ </head>
+ <body>
+ <div class="instructions">Test passes if the two boxes below look exactly the same.</div>
+ <div class="comments">
+ Key to entities used below:
+ &#x05D0; ... &#x05D5; - The first six Hebrew letters (strongly RTL).
+ &#x202D; - The LRO (left-to-right override) formatting character.
+ &#x202C; - The PDF (pop directional formatting) formatting character; closes LRO.
+ If the BDIs in the test's first DIV were SPANs, the &#x05D1; would be rendered to the left
+ of the &#x05D0;.
+ </div>
+ <div class="test">
+ <div dir="ltr"><bdi>[&#x05D0;]</bdi> &gt; <bdi>[&#x05D1;]</bdi>...</div>
+ <div dir="ltr"><bdi dir="rtl">[&#x05D0;]</bdi> &gt; <bdi dir="rtl">[&#x05D1;]</bdi>...</div>
+ <div dir="ltr"><bdi dir="ltr">[&#x05D0;]</bdi> &gt; <bdi dir="ltr">[&#x05D1;]</bdi>...</div>
+ <div dir="rtl"><bdi>[a]</bdi> &gt; <bdi>[b]</bdi>...</div>
+ <div dir="rtl"><bdi dir="ltr">[a]</bdi> &gt; <bdi dir="ltr">[b]</bdi>...</div>
+ <div dir="rtl"><bdi dir="rtl">[a]</bdi> &gt; <bdi dir="rtl">[b]</bdi>...</div>
+ </div>
+ <div class="ref">
+ <div dir="ltr">&#x202D;[&#x05D0;] &gt; [&#x05D1;]...&#x202C;</div>
+ <div dir="ltr">&#x202D;[&#x05D0;] &gt; [&#x05D1;]...&#x202C;</div>
+ <div dir="ltr">&#x202D;[&#x05D0;] &gt; [&#x05D1;]...&#x202C;</div>
+ <div dir="rtl">&#x202D;...[b] &lt; [a]&#x202C;</div>
+ <div dir="rtl">&#x202D;...[b] &lt; [a]&#x202C;</div>
+ <div dir="rtl">&#x202D;...[b] &lt; [a]&#x202C;</div>
+ </div>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/html/semantics/text-level-semantics/the-bdi-element/bdi-neutral-to-another-bdi-2-ref.html b/testing/web-platform/tests/html/semantics/text-level-semantics/the-bdi-element/bdi-neutral-to-another-bdi-2-ref.html
new file mode 100644
index 0000000000..9aef97c0ea
--- /dev/null
+++ b/testing/web-platform/tests/html/semantics/text-level-semantics/the-bdi-element/bdi-neutral-to-another-bdi-2-ref.html
@@ -0,0 +1,47 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8" />
+ <link rel="author" title="Aharon Lanin" href="mailto:aharon@google.com" />
+ <link rel="author" title="Shai Berger" href="mailto:shai@platonix.com" />
+ <link rel="author" title="HTML5 bidi test WG" href="mailto:html5bidi@googlegroups.com" />
+ <style>
+ body{
+ font-size:2em;
+ }
+ .test, .ref {
+ border: medium solid gray;
+ width: 400px;
+ margin: 20px;
+ }
+ .comments {
+ display: none;
+ }
+ </style>
+ </head>
+ <body>
+ <div class="instructions">Test passes if the two boxes below look exactly the same.</div>
+ <div class="comments">
+ Key to entities used below:
+ &#x05D0; ... &#x05D5; - The first six Hebrew letters (strongly RTL).
+ &#x202D; - The LRO (left-to-right override) formatting character.
+ &#x202C; - The PDF (pop directional formatting) formatting character; closes LRO.
+ </div>
+ <div class="test">
+ <div dir="ltr">&#x202D;&#x05D0;&#x05D1;...&#x202C;</div>
+ <div dir="ltr">&#x202D;&#x05D0;&#x05D1;...&#x202C;</div>
+ <div dir="ltr">&#x202D;&#x05D0;&#x05D1;...&#x202C;</div>
+ <div dir="rtl">&#x202D;...ba&#x202C;</div>
+ <div dir="rtl">&#x202D;...ba&#x202C;</div>
+ <div dir="rtl">&#x202D;...ba&#x202C;</div>
+ </div>
+ <div class="ref">
+ <div dir="ltr">&#x202D;&#x05D0;&#x05D1;...&#x202C;</div>
+ <div dir="ltr">&#x202D;&#x05D0;&#x05D1;...&#x202C;</div>
+ <div dir="ltr">&#x202D;&#x05D0;&#x05D1;...&#x202C;</div>
+ <div dir="rtl">&#x202D;...ba&#x202C;</div>
+ <div dir="rtl">&#x202D;...ba&#x202C;</div>
+ <div dir="rtl">&#x202D;...ba&#x202C;</div>
+ </div>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/html/semantics/text-level-semantics/the-bdi-element/bdi-neutral-to-another-bdi-2.html b/testing/web-platform/tests/html/semantics/text-level-semantics/the-bdi-element/bdi-neutral-to-another-bdi-2.html
new file mode 100644
index 0000000000..85aec46686
--- /dev/null
+++ b/testing/web-platform/tests/html/semantics/text-level-semantics/the-bdi-element/bdi-neutral-to-another-bdi-2.html
@@ -0,0 +1,59 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8" />
+ <title>HTML Test: BDI: neutral to another immediately following BDI</title>
+ <link rel="match" href="bdi-neutral-to-another-bdi-2-ref.html">
+ <link rel="author" title="Aharon Lanin" href="mailto:aharon@google.com" />
+ <link rel="author" title="Shai Berger" href="mailto:shai@platonix.com" />
+ <link rel="author" title="HTML5 bidi test WG" href="mailto:html5bidi@googlegroups.com" />
+ <link rel="help" href="https://html.spec.whatwg.org/multipage/#the-bdi-element" />
+ <meta name="assert" content="
+ 'For the purposes of applying the bidirectional algorithm to the paragraph-level
+ container that a bdi element finds itself within, the bdi element must be treated
+ like a U+FFFC OBJECT REPLACEMENT CHARACTER.'
+ Thus, when a BDI contains text of the same strong direction as another BDI following it, the
+ two must not form a directional run as would be the case if the BDIs were just SPANs, even if
+ the two BDIs are not separated by anything at all." />
+ <style>
+ body{
+ font-size:2em;
+ }
+ .test, .ref {
+ border: medium solid gray;
+ width: 400px;
+ margin: 20px;
+ }
+ .comments {
+ display: none;
+ }
+ </style>
+ </head>
+ <body>
+ <div class="instructions">Test passes if the two boxes below look exactly the same.</div>
+ <div class="comments">
+ Key to entities used below:
+ &#x05D0; ... &#x05D5; - The first six Hebrew letters (strongly RTL).
+ &#x202D; - The LRO (left-to-right override) formatting character.
+ &#x202C; - The PDF (pop directional formatting) formatting character; closes LRO.
+ If the BDIs in the test's first DIV were SPANs, the &#x05D1; would be rendered to the left of
+ the &#x05D0;.
+ </div>
+ <div class="test">
+ <div dir="ltr"><bdi>&#x05D0;</bdi><bdi>&#x05D1;</bdi>...</div>
+ <div dir="ltr"><bdi dir="rtl">&#x05D0;</bdi><bdi dir="rtl">&#x05D1;</bdi>...</div>
+ <div dir="ltr"><bdi dir="ltr">&#x05D0;</bdi><bdi dir="ltr">&#x05D1;</bdi>...</div>
+ <div dir="rtl"><bdi>a</bdi><bdi>b</bdi>...</div>
+ <div dir="rtl"><bdi dir="ltr">a</bdi><bdi dir="ltr">b</bdi>...</div>
+ <div dir="rtl"><bdi dir="rtl">a</bdi><bdi dir="rtl">b</bdi>...</div>
+ </div>
+ <div class="ref">
+ <div dir="ltr">&#x202D;&#x05D0;&#x05D1;...&#x202C;</div>
+ <div dir="ltr">&#x202D;&#x05D0;&#x05D1;...&#x202C;</div>
+ <div dir="ltr">&#x202D;&#x05D0;&#x05D1;...&#x202C;</div>
+ <div dir="rtl">&#x202D;...ba&#x202C;</div>
+ <div dir="rtl">&#x202D;...ba&#x202C;</div>
+ <div dir="rtl">&#x202D;...ba&#x202C;</div>
+ </div>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/html/semantics/text-level-semantics/the-bdi-element/bdi-neutral-to-letter-following-1-ref.html b/testing/web-platform/tests/html/semantics/text-level-semantics/the-bdi-element/bdi-neutral-to-letter-following-1-ref.html
new file mode 100644
index 0000000000..a34d09bd24
--- /dev/null
+++ b/testing/web-platform/tests/html/semantics/text-level-semantics/the-bdi-element/bdi-neutral-to-letter-following-1-ref.html
@@ -0,0 +1,45 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8">
+ <link rel="author" title="Aharon Lanin" href="mailto:aharon@google.com">
+ <link rel="author" title="Shai Berger" href="mailto:shai@platonix.com">
+ <link rel="author" title="HTML5 bidi test WG" href="mailto:html5bidi@googlegroups.com">
+ <style>
+ body{
+ font-size:2em;
+ }
+ .test, .ref {
+ border: medium solid gray;
+ width: 400px;
+ margin: 20px;
+ }
+ .comments { display: none; }
+ </style>
+ </head>
+ <body>
+ <div class="instructions"><p>Test passes if the two boxes below look exactly the same.</p></div>
+ <div class="comments">
+ Key to entities used below:
+ &#x05D0; ... &#x05D5; - The first six Hebrew letters (strongly RTL).
+ &#x202D; - The LRO (left-to-right override) formatting character.
+ &#x202C; - The PDF (pop directional formatting) formatting character; closes LRO.
+ </div>
+ <div class="test">
+ <div dir="ltr">&#x202D;[&#x05D0;] &gt; &#x05D1;...&#x202C;</div>
+ <div dir="ltr">&#x202D;[&#x05D0;] &gt; &#x05D1;...&#x202C;</div>
+ <div dir="ltr">&#x202D;[&#x05D0;] &gt; &#x05D1;...&#x202C;</div>
+ <div dir="rtl">&#x202D;...b &lt; [a]&#x202C;</div>
+ <div dir="rtl">&#x202D;...b &lt; [a]&#x202C;</div>
+ <div dir="rtl">&#x202D;...b &lt; [a]&#x202C;</div>
+ </div>
+ <div class="ref">
+ <div dir="ltr">&#x202D;[&#x05D0;] &gt; &#x05D1;...&#x202C;</div>
+ <div dir="ltr">&#x202D;[&#x05D0;] &gt; &#x05D1;...&#x202C;</div>
+ <div dir="ltr">&#x202D;[&#x05D0;] &gt; &#x05D1;...&#x202C;</div>
+ <div dir="rtl">&#x202D;...b &lt; [a]&#x202C;</div>
+ <div dir="rtl">&#x202D;...b &lt; [a]&#x202C;</div>
+ <div dir="rtl">&#x202D;...b &lt; [a]&#x202C;</div>
+ </div>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/html/semantics/text-level-semantics/the-bdi-element/bdi-neutral-to-letter-following-1.html b/testing/web-platform/tests/html/semantics/text-level-semantics/the-bdi-element/bdi-neutral-to-letter-following-1.html
new file mode 100644
index 0000000000..76da57c2b9
--- /dev/null
+++ b/testing/web-platform/tests/html/semantics/text-level-semantics/the-bdi-element/bdi-neutral-to-letter-following-1.html
@@ -0,0 +1,54 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8"/>
+ <title>HTML Test: BDI: neutral to following letter</title>
+ <link rel="match" href="bdi-neutral-to-letter-following-1-ref.html"/>
+ <link rel="author" title="Aharon Lanin" href="mailto:aharon@google.com"/>
+ <link rel="author" title="Shai Berger" href="mailto:shai@platonix.com"/>
+ <link rel="author" title="HTML5 bidi test WG" href="mailto:html5bidi@googlegroups.com"/>
+ <link rel="help" href="https://html.spec.whatwg.org/multipage/#the-bdi-element"/>
+ <meta name="assert" content="
+ 'For the purposes of applying the bidirectional algorithm to the paragraph-level
+ container that a bdi element finds itself within, the bdi element must be treated
+ like a U+FFFC OBJECT REPLACEMENT CHARACTER.'"/>
+ <style>
+ body{
+ font-size:2em;
+ }
+ .test, .ref {
+ border: medium solid gray;
+ width: 400px;
+ margin: 20px;
+ }
+ .comments { display: none; }
+ </style>
+ </head>
+ <body>
+ <div class="instructions"><p>Test passes if the two boxes below look exactly the same.</p></div>
+ <div class="comments">
+ Key to entities used below:
+ &#x05D0; ... &#x05D5; - The first six Hebrew letters (strongly RTL).
+ &#x202D; - The LRO (left-to-right override) formatting character.
+ &#x202C; - The PDF (pop directional formatting) formatting character; closes LRO.
+ If the BDI in the test's first DIV were a SPAN, the &#x05D1; would be rendered to the left
+ of the &#x05D0;
+ </div>
+ <div class="test">
+ <div dir="ltr"><bdi>[&#x05D0;]</bdi> &gt; &#x05D1;...</div>
+ <div dir="ltr"><bdi dir="rtl">[&#x05D0;]</bdi> &gt; &#x05D1;...</div>
+ <div dir="ltr"><bdi dir="ltr">[&#x05D0;]</bdi> &gt; &#x05D1;...</div>
+ <div dir="rtl"><bdi>[a]</bdi> &gt; b...</div>
+ <div dir="rtl"><bdi dir="ltr">[a]</bdi> &gt; b...</div>
+ <div dir="rtl"><bdi dir="rtl">[a]</bdi> &gt; b...</div>
+ </div>
+ <div class="ref">
+ <div dir="ltr">&#x202D;[&#x05D0;] &gt; &#x05D1;...&#x202C;</div>
+ <div dir="ltr">&#x202D;[&#x05D0;] &gt; &#x05D1;...&#x202C;</div>
+ <div dir="ltr">&#x202D;[&#x05D0;] &gt; &#x05D1;...&#x202C;</div>
+ <div dir="rtl">&#x202D;...b &lt; [a]&#x202C;</div>
+ <div dir="rtl">&#x202D;...b &lt; [a]&#x202C;</div>
+ <div dir="rtl">&#x202D;...b &lt; [a]&#x202C;</div>
+ </div>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/html/semantics/text-level-semantics/the-bdi-element/bdi-neutral-to-letter-following-2-ref.html b/testing/web-platform/tests/html/semantics/text-level-semantics/the-bdi-element/bdi-neutral-to-letter-following-2-ref.html
new file mode 100644
index 0000000000..80f36183b0
--- /dev/null
+++ b/testing/web-platform/tests/html/semantics/text-level-semantics/the-bdi-element/bdi-neutral-to-letter-following-2-ref.html
@@ -0,0 +1,45 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8">
+ <link rel="author" title="Aharon Lanin" href="mailto:aharon@google.com">
+ <link rel="author" title="Shai Berger" href="mailto:shai@platonix.com">
+ <link rel="author" title="HTML5 bidi test WG" href="mailto:html5bidi@googlegroups.com">
+ <style>
+ body{
+ font-size:2em;
+ }
+ .test, .ref {
+ border: medium solid gray;
+ width: 400px;
+ margin: 20px;
+ }
+ .comments { display: none; }
+ </style>
+ </head>
+ <body>
+ <div class="instructions"><p>Test passes if the two boxes below look exactly the same.</p></div>
+ <div class="comments">
+ Key to entities used below:
+ &#x05D0; ... &#x05D5; - The first six Hebrew letters (strongly RTL).
+ &#x202D; - The LRO (left-to-right override) formatting character.
+ &#x202C; - The PDF (pop directional formatting) formatting character; closes LRO.
+ </div>
+ <div class="test">
+ <div dir="ltr">&#x202D;&#x05D0;&#x05D1;...&#x202C;</div>
+ <div dir="ltr">&#x202D;&#x05D0;&#x05D1;...&#x202C;</div>
+ <div dir="ltr">&#x202D;&#x05D0;&#x05D1;...&#x202C;</div>
+ <div dir="rtl">&#x202D;...ba&#x202C;</div>
+ <div dir="rtl">&#x202D;...ba&#x202C;</div>
+ <div dir="rtl">&#x202D;...ba&#x202C;</div>
+ </div>
+ <div class="ref">
+ <div dir="ltr">&#x202D;&#x05D0;&#x05D1;...&#x202C;</div>
+ <div dir="ltr">&#x202D;&#x05D0;&#x05D1;...&#x202C;</div>
+ <div dir="ltr">&#x202D;&#x05D0;&#x05D1;...&#x202C;</div>
+ <div dir="rtl">&#x202D;...ba&#x202C;</div>
+ <div dir="rtl">&#x202D;...ba&#x202C;</div>
+ <div dir="rtl">&#x202D;...ba&#x202C;</div>
+ </div>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/html/semantics/text-level-semantics/the-bdi-element/bdi-neutral-to-letter-following-2.html b/testing/web-platform/tests/html/semantics/text-level-semantics/the-bdi-element/bdi-neutral-to-letter-following-2.html
new file mode 100644
index 0000000000..ce41983f00
--- /dev/null
+++ b/testing/web-platform/tests/html/semantics/text-level-semantics/the-bdi-element/bdi-neutral-to-letter-following-2.html
@@ -0,0 +1,54 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8"/>
+ <title>HTML Test: BDI: neutral to immediately following letter</title>
+ <link rel="match" href="bdi-neutral-to-letter-following-2-ref.html">
+ <link rel="author" title="Aharon Lanin" href="mailto:aharon@google.com"/>
+ <link rel="author" title="Shai Berger" href="mailto:shai@platonix.com"/>
+ <link rel="author" title="HTML5 bidi test WG" href="mailto:html5bidi@googlegroups.com"/>
+ <link rel="help" href="https://html.spec.whatwg.org/multipage/#the-bdi-element"/>
+ <meta name="assert" content="
+ 'For the purposes of applying the bidirectional algorithm to the paragraph-level
+ container that a bdi element finds itself within, the bdi element must be treated
+ like a U+FFFC OBJECT REPLACEMENT CHARACTER.'"/>
+ <style>
+ body{
+ font-size:2em;
+ }
+ .test, .ref {
+ border: medium solid gray;
+ width: 400px;
+ margin: 20px;
+ }
+ .comments { display: none; }
+ </style>
+ </head>
+ <body>
+ <div class="instructions"><p>Test passes if the two boxes below look exactly the same.</p></div>
+ <div class="comments">
+ Key to entities used below:
+ &#x05D0; ... &#x05D5; - The first six Hebrew letters (strongly RTL).
+ &#x202D; - The LRO (left-to-right override) formatting character.
+ &#x202C; - The PDF (pop directional formatting) formatting character; closes LRO.
+ If the BDI in the following DIV were a SPAN, the &#x05D1; would be rendered to the left
+ of the &#x05D0;
+ </div>
+ <div class="test">
+ <div dir="ltr"><bdi>&#x05D0;</bdi>&#x05D1;...</div>
+ <div dir="ltr"><bdi dir="rtl">&#x05D0;</bdi>&#x05D1;...</div>
+ <div dir="ltr"><bdi dir="ltr">&#x05D0;</bdi>&#x05D1;...</div>
+ <div dir="rtl"><bdi>a</bdi>b...</div>
+ <div dir="rtl"><bdi dir="ltr">a</bdi>b...</div>
+ <div dir="rtl"><bdi dir="rtl">a</bdi>b...</div>
+ </div>
+ <div class="ref">
+ <div dir="ltr">&#x202D;&#x05D0;&#x05D1;...&#x202C;</div>
+ <div dir="ltr">&#x202D;&#x05D0;&#x05D1;...&#x202C;</div>
+ <div dir="ltr">&#x202D;&#x05D0;&#x05D1;...&#x202C;</div>
+ <div dir="rtl">&#x202D;...ba&#x202C;</div>
+ <div dir="rtl">&#x202D;...ba&#x202C;</div>
+ <div dir="rtl">&#x202D;...ba&#x202C;</div>
+ </div>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/html/semantics/text-level-semantics/the-bdi-element/bdi-neutral-to-letter-preceding-1-ref.html b/testing/web-platform/tests/html/semantics/text-level-semantics/the-bdi-element/bdi-neutral-to-letter-preceding-1-ref.html
new file mode 100644
index 0000000000..5e39eabd28
--- /dev/null
+++ b/testing/web-platform/tests/html/semantics/text-level-semantics/the-bdi-element/bdi-neutral-to-letter-preceding-1-ref.html
@@ -0,0 +1,45 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8">
+ <link rel="author" title="Aharon Lanin" href="mailto:aharon@google.com">
+ <link rel="author" title="Shai Berger" href="mailto:shai@platonix.com">
+ <link rel="author" title="HTML5 bidi test WG" href="mailto:html5bidi@googlegroups.com">
+ <style>
+ body{
+ font-size:2em;
+ }
+ .test, .ref {
+ border: medium solid gray;
+ width: 400px;
+ margin: 20px;
+ }
+ .comments { display: none; }
+ </style>
+ </head>
+ <body>
+ <div class="instructions"><p>Test passes if the two boxes below look exactly the same.</p></div>
+ <div class="comments">
+ Key to entities used below:
+ &#x05D0; ... &#x05D5; - The first six Hebrew letters (strongly RTL).
+ &#x202D; - The LRO (left-to-right override) formatting character.
+ &#x202C; - The PDF (pop directional formatting) formatting character; closes LRO.
+ </div>
+ <div class="test">
+ <div dir="ltr">&#x202D;&#x05D0; &gt; [&#x05D1;]...&#x202C;</div>
+ <div dir="ltr">&#x202D;&#x05D0; &gt; [&#x05D1;]...&#x202C;</div>
+ <div dir="ltr">&#x202D;&#x05D0; &gt; [&#x05D1;]...&#x202C;</div>
+ <div dir="rtl">&#x202D;...[b] &lt; a&#x202C;</div>
+ <div dir="rtl">&#x202D;...[b] &lt; a&#x202C;</div>
+ <div dir="rtl">&#x202D;...[b] &lt; a&#x202C;</div>
+ </div>
+ <div class="ref">
+ <div dir="ltr">&#x202D;&#x05D0; &gt; [&#x05D1;]...&#x202C;</div>
+ <div dir="ltr">&#x202D;&#x05D0; &gt; [&#x05D1;]...&#x202C;</div>
+ <div dir="ltr">&#x202D;&#x05D0; &gt; [&#x05D1;]...&#x202C;</div>
+ <div dir="rtl">&#x202D;...[b] &lt; a&#x202C;</div>
+ <div dir="rtl">&#x202D;...[b] &lt; a&#x202C;</div>
+ <div dir="rtl">&#x202D;...[b] &lt; a&#x202C;</div>
+ </div>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/html/semantics/text-level-semantics/the-bdi-element/bdi-neutral-to-letter-preceding-1.html b/testing/web-platform/tests/html/semantics/text-level-semantics/the-bdi-element/bdi-neutral-to-letter-preceding-1.html
new file mode 100644
index 0000000000..46772de642
--- /dev/null
+++ b/testing/web-platform/tests/html/semantics/text-level-semantics/the-bdi-element/bdi-neutral-to-letter-preceding-1.html
@@ -0,0 +1,54 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8"/>
+ <title>HTML Test: BDI: neutral to preceding letter</title>
+ <link rel="match" href="bdi-neutral-to-letter-preceding-1-ref.html">
+ <link rel="author" title="Aharon Lanin" href="mailto:aharon@google.com"/>
+ <link rel="author" title="Shai Berger" href="mailto:shai@platonix.com"/>
+ <link rel="author" title="HTML5 bidi test WG" href="mailto:html5bidi@googlegroups.com"/>
+ <link rel="help" href="https://html.spec.whatwg.org/multipage/#the-bdi-element"/>
+ <meta name="assert" content="
+ 'For the purposes of applying the bidirectional algorithm to the paragraph-level
+ container that a bdi element finds itself within, the bdi element must be treated
+ like a U+FFFC OBJECT REPLACEMENT CHARACTER.'"/>
+ <style>
+ body{
+ font-size:2em;
+ }
+ .test, .ref {
+ border: medium solid gray;
+ width: 400px;
+ margin: 20px;
+ }
+ .comments { display: none; }
+ </style>
+ </head>
+ <body>
+ <div class="instructions"><p>Test passes if the two boxes below look exactly the same.</p></div>
+ <div class="comments">
+ Key to entities used below:
+ &#x05D0; ... &#x05D5; - The first six Hebrew letters (strongly RTL).
+ &#x202D; - The LRO (left-to-right override) formatting character.
+ &#x202C; - The PDF (pop directional formatting) formatting character; closes LRO.
+ If the BDI in the test's first DIV were a SPAN, the &#x05D1; would be rendered to the left
+ of the &#x05D0;
+ </div>
+ <div class="test">
+ <div dir="ltr">&#x05D0; &gt; <bdi>[&#x05D1;]</bdi>...</div>
+ <div dir="ltr">&#x05D0; &gt; <bdi dir="rtl">[&#x05D1;]</bdi>...</div>
+ <div dir="ltr">&#x05D0; &gt; <bdi dir="ltr">[&#x05D1;]</bdi>...</div>
+ <div dir="rtl">a &gt; <bdi>[b]</bdi>...</div>
+ <div dir="rtl">a &gt; <bdi dir="ltr">[b]</bdi>...</div>
+ <div dir="rtl">a &gt; <bdi dir="rtl">[b]</bdi>...</div>
+ </div>
+ <div class="ref">
+ <div dir="ltr">&#x202D;&#x05D0; &gt; [&#x05D1;]...&#x202C;</div>
+ <div dir="ltr">&#x202D;&#x05D0; &gt; [&#x05D1;]...&#x202C;</div>
+ <div dir="ltr">&#x202D;&#x05D0; &gt; [&#x05D1;]...&#x202C;</div>
+ <div dir="rtl">&#x202D;...[b] &lt; a&#x202C;</div>
+ <div dir="rtl">&#x202D;...[b] &lt; a&#x202C;</div>
+ <div dir="rtl">&#x202D;...[b] &lt; a&#x202C;</div>
+ </div>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/html/semantics/text-level-semantics/the-bdi-element/bdi-neutral-to-letter-preceding-2-ref.html b/testing/web-platform/tests/html/semantics/text-level-semantics/the-bdi-element/bdi-neutral-to-letter-preceding-2-ref.html
new file mode 100644
index 0000000000..80f36183b0
--- /dev/null
+++ b/testing/web-platform/tests/html/semantics/text-level-semantics/the-bdi-element/bdi-neutral-to-letter-preceding-2-ref.html
@@ -0,0 +1,45 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8">
+ <link rel="author" title="Aharon Lanin" href="mailto:aharon@google.com">
+ <link rel="author" title="Shai Berger" href="mailto:shai@platonix.com">
+ <link rel="author" title="HTML5 bidi test WG" href="mailto:html5bidi@googlegroups.com">
+ <style>
+ body{
+ font-size:2em;
+ }
+ .test, .ref {
+ border: medium solid gray;
+ width: 400px;
+ margin: 20px;
+ }
+ .comments { display: none; }
+ </style>
+ </head>
+ <body>
+ <div class="instructions"><p>Test passes if the two boxes below look exactly the same.</p></div>
+ <div class="comments">
+ Key to entities used below:
+ &#x05D0; ... &#x05D5; - The first six Hebrew letters (strongly RTL).
+ &#x202D; - The LRO (left-to-right override) formatting character.
+ &#x202C; - The PDF (pop directional formatting) formatting character; closes LRO.
+ </div>
+ <div class="test">
+ <div dir="ltr">&#x202D;&#x05D0;&#x05D1;...&#x202C;</div>
+ <div dir="ltr">&#x202D;&#x05D0;&#x05D1;...&#x202C;</div>
+ <div dir="ltr">&#x202D;&#x05D0;&#x05D1;...&#x202C;</div>
+ <div dir="rtl">&#x202D;...ba&#x202C;</div>
+ <div dir="rtl">&#x202D;...ba&#x202C;</div>
+ <div dir="rtl">&#x202D;...ba&#x202C;</div>
+ </div>
+ <div class="ref">
+ <div dir="ltr">&#x202D;&#x05D0;&#x05D1;...&#x202C;</div>
+ <div dir="ltr">&#x202D;&#x05D0;&#x05D1;...&#x202C;</div>
+ <div dir="ltr">&#x202D;&#x05D0;&#x05D1;...&#x202C;</div>
+ <div dir="rtl">&#x202D;...ba&#x202C;</div>
+ <div dir="rtl">&#x202D;...ba&#x202C;</div>
+ <div dir="rtl">&#x202D;...ba&#x202C;</div>
+ </div>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/html/semantics/text-level-semantics/the-bdi-element/bdi-neutral-to-letter-preceding-2.html b/testing/web-platform/tests/html/semantics/text-level-semantics/the-bdi-element/bdi-neutral-to-letter-preceding-2.html
new file mode 100644
index 0000000000..192115775c
--- /dev/null
+++ b/testing/web-platform/tests/html/semantics/text-level-semantics/the-bdi-element/bdi-neutral-to-letter-preceding-2.html
@@ -0,0 +1,54 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8"/>
+ <title>HTML Test: BDI: neutral to immediately preceding letter</title>
+ <link rel="match" href="bdi-neutral-to-letter-preceding-2-ref.html"/>
+ <link rel="author" title="Aharon Lanin" href="mailto:aharon@google.com"/>
+ <link rel="author" title="Shai Berger" href="mailto:shai@platonix.com"/>
+ <link rel="author" title="HTML5 bidi test WG" href="mailto:html5bidi@googlegroups.com"/>
+ <link rel="help" href="https://html.spec.whatwg.org/multipage/#the-bdi-element"/>
+ <meta name="assert" content="
+ 'For the purposes of applying the bidirectional algorithm to the paragraph-level
+ container that a bdi element finds itself within, the bdi element must be treated
+ like a U+FFFC OBJECT REPLACEMENT CHARACTER.'"/>
+ <style>
+ body{
+ font-size:2em;
+ }
+ .test, .ref {
+ border: medium solid gray;
+ width: 400px;
+ margin: 20px;
+ }
+ .comments { display: none; }
+ </style>
+ </head>
+ <body>
+ <div class="instructions"><p>Test passes if the two boxes below look exactly the same.</p></div>
+ <div class="comments">
+ Key to entities used below:
+ &#x05D0; ... &#x05D5; - The first six Hebrew letters (strongly RTL).
+ &#x202D; - The LRO (left-to-right override) formatting character.
+ &#x202C; - The PDF (pop directional formatting) formatting character; closes LRO.
+ If the BDI in the test's first DIV were a SPAN, the &#x05D1; would be rendered to the left
+ of the &#x05D0;
+ </div>
+ <div class="test">
+ <div dir="ltr">&#x05D0;<bdi>&#x05D1;</bdi>...</div>
+ <div dir="ltr">&#x05D0;<bdi dir="rtl">&#x05D1;</bdi>...</div>
+ <div dir="ltr">&#x05D0;<bdi dir="ltr">&#x05D1;</bdi>...</div>
+ <div dir="rtl">a<bdi>b</bdi>...</div>
+ <div dir="rtl">a<bdi dir="ltr">b</bdi>...</div>
+ <div dir="rtl">a<bdi dir="rtl">b</bdi>...</div>
+ </div>
+ <div class="ref">
+ <div dir="ltr">&#x202D;&#x05D0;&#x05D1;...&#x202C;</div>
+ <div dir="ltr">&#x202D;&#x05D0;&#x05D1;...&#x202C;</div>
+ <div dir="ltr">&#x202D;&#x05D0;&#x05D1;...&#x202C;</div>
+ <div dir="rtl">&#x202D;...ba&#x202C;</div>
+ <div dir="rtl">&#x202D;...ba&#x202C;</div>
+ <div dir="rtl">&#x202D;...ba&#x202C;</div>
+ </div>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/html/semantics/text-level-semantics/the-bdi-element/bdi-neutral-to-number-following-1-ref.html b/testing/web-platform/tests/html/semantics/text-level-semantics/the-bdi-element/bdi-neutral-to-number-following-1-ref.html
new file mode 100644
index 0000000000..ad15d468b8
--- /dev/null
+++ b/testing/web-platform/tests/html/semantics/text-level-semantics/the-bdi-element/bdi-neutral-to-number-following-1-ref.html
@@ -0,0 +1,45 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8">
+ <link rel="author" title="Aharon Lanin" href="mailto:aharon@google.com">
+ <link rel="author" title="Shai Berger" href="mailto:shai@platonix.com">
+ <link rel="author" title="HTML5 bidi test WG" href="mailto:html5bidi@googlegroups.com">
+ <style>
+ body{
+ font-size:2em;
+ }
+ .test, .ref {
+ border: medium solid gray;
+ width: 400px;
+ margin: 20px;
+ }
+ .comments { display: none; }
+ </style>
+ </head>
+ <body>
+ <div class="instructions"><p>Test passes if the two boxes below look exactly the same.</p></div>
+ <div class="comments">
+ Key to entities used below:
+ &#x05D0; ... &#x05D5; - The first six Hebrew letters (strongly RTL).
+ &#x202D; - The LRO (left-to-right override) formatting character.
+ &#x202C; - The PDF (pop directional formatting) formatting character; closes LRO.
+ </div>
+ <div class="test">
+ <div dir="ltr">&#x202D;[&#x05D0;] (3 reviews)...&#x202C;</div>
+ <div dir="ltr">&#x202D;[&#x05D0;] (3 reviews)...&#x202C;</div>
+ <div dir="ltr">&#x202D;[&#x05D0;] (3 reviews)...&#x202C;</div>
+ <div dir="rtl">&#x202D;...(3) [a]&#x202C;</div>
+ <div dir="rtl">&#x202D;...(3) [a]&#x202C;</div>
+ <div dir="rtl">&#x202D;...(3) [a]&#x202C;</div>
+ </div>
+ <div class="ref">
+ <div dir="ltr">&#x202D;[&#x05D0;] (3 reviews)...&#x202C;</div>
+ <div dir="ltr">&#x202D;[&#x05D0;] (3 reviews)...&#x202C;</div>
+ <div dir="ltr">&#x202D;[&#x05D0;] (3 reviews)...&#x202C;</div>
+ <div dir="rtl">&#x202D;...(3) [a]&#x202C;</div>
+ <div dir="rtl">&#x202D;...(3) [a]&#x202C;</div>
+ <div dir="rtl">&#x202D;...(3) [a]&#x202C;</div>
+ </div>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/html/semantics/text-level-semantics/the-bdi-element/bdi-neutral-to-number-following-1.html b/testing/web-platform/tests/html/semantics/text-level-semantics/the-bdi-element/bdi-neutral-to-number-following-1.html
new file mode 100644
index 0000000000..ff566737f2
--- /dev/null
+++ b/testing/web-platform/tests/html/semantics/text-level-semantics/the-bdi-element/bdi-neutral-to-number-following-1.html
@@ -0,0 +1,54 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8"/>
+ <title>HTML Test: BDI: neutral to following number</title>
+ <link rel="match" href="bdi-neutral-to-number-following-1-ref.html"/>
+ <link rel="author" title="Aharon Lanin" href="mailto:aharon@google.com"/>
+ <link rel="author" title="Shai Berger" href="mailto:shai@platonix.com"/>
+ <link rel="author" title="HTML5 bidi test WG" href="mailto:html5bidi@googlegroups.com"/>
+ <link rel="help" href="https://html.spec.whatwg.org/multipage/#the-bdi-element"/>
+ <meta name="assert" content="
+ 'For the purposes of applying the bidirectional algorithm to the paragraph-level
+ container that a bdi element finds itself within, the bdi element must be treated
+ like a U+FFFC OBJECT REPLACEMENT CHARACTER.'"/>
+ <style>
+ body{
+ font-size:2em;
+ }
+ .test, .ref {
+ border: medium solid gray;
+ width: 400px;
+ margin: 20px;
+ }
+ .comments { display: none; }
+ </style>
+ </head>
+ <body>
+ <div class="instructions"><p>Test passes if the two boxes below look exactly the same.</p></div>
+ <div class="comments">
+ Key to entities used below:
+ &#x05D0; ... &#x05D5; - The first six Hebrew letters (strongly RTL).
+ &#x202D; - The LRO (left-to-right override) formatting character.
+ &#x202C; - The PDF (pop directional formatting) formatting character; closes LRO.
+ If the BDI in the test's first DIV were a SPAN, the 3 would be rendered to the left
+ of the &#x05D0;
+ </div>
+ <div class="test">
+ <div dir="ltr"><bdi>[&#x05D0;]</bdi> (3 reviews)...</div>
+ <div dir="ltr"><bdi dir="rtl">[&#x05D0;]</bdi> (3 reviews)...</div>
+ <div dir="ltr"><bdi dir="ltr">[&#x05D0;]</bdi> (3 reviews)...</div>
+ <div dir="rtl"><bdi>[a]</bdi> (3)...</div>
+ <div dir="rtl"><bdi dir="ltr">[a]</bdi> (3)...</div>
+ <div dir="rtl"><bdi dir="rtl">[a]</bdi> (3)...</div>
+ </div>
+ <div class="ref">
+ <div dir="ltr">&#x202D;[&#x05D0;] (3 reviews)...&#x202C;</div>
+ <div dir="ltr">&#x202D;[&#x05D0;] (3 reviews)...&#x202C;</div>
+ <div dir="ltr">&#x202D;[&#x05D0;] (3 reviews)...&#x202C;</div>
+ <div dir="rtl">&#x202D;...(3) [a]&#x202C;</div>
+ <div dir="rtl">&#x202D;...(3) [a]&#x202C;</div>
+ <div dir="rtl">&#x202D;...(3) [a]&#x202C;</div>
+ </div>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/html/semantics/text-level-semantics/the-bdi-element/bdi-neutral-to-number-following-2-ref.html b/testing/web-platform/tests/html/semantics/text-level-semantics/the-bdi-element/bdi-neutral-to-number-following-2-ref.html
new file mode 100644
index 0000000000..d0f1097ade
--- /dev/null
+++ b/testing/web-platform/tests/html/semantics/text-level-semantics/the-bdi-element/bdi-neutral-to-number-following-2-ref.html
@@ -0,0 +1,45 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8">
+ <link rel="author" title="Aharon Lanin" href="mailto:aharon@google.com">
+ <link rel="author" title="Shai Berger" href="mailto:shai@platonix.com">
+ <link rel="author" title="HTML5 bidi test WG" href="mailto:html5bidi@googlegroups.com">
+ <style>
+ body{
+ font-size:2em;
+ }
+ .test, .ref {
+ border: medium solid gray;
+ width: 400px;
+ margin: 20px;
+ }
+ .comments { display: none; }
+ </style>
+ </head>
+ <body>
+ <div class="instructions"><p>Test passes if the two boxes below look exactly the same.</p></div>
+ <div class="comments">
+ Key to entities used below:
+ &#x05D0; ... &#x05D5; - The first six Hebrew letters (strongly RTL).
+ &#x202D; - The LRO (left-to-right override) formatting character.
+ &#x202C; - The PDF (pop directional formatting) formatting character; closes LRO.
+ </div>
+ <div class="test">
+ <div dir="ltr">&#x202D;&#x05D0;1...&#x202C;</div>
+ <div dir="ltr">&#x202D;&#x05D0;1...&#x202C;</div>
+ <div dir="ltr">&#x202D;&#x05D0;1...&#x202C;</div>
+ <div dir="rtl">&#x202D;...1a&#x202C;</div>
+ <div dir="rtl">&#x202D;...1a&#x202C;</div>
+ <div dir="rtl">&#x202D;...1a&#x202C;</div>
+ </div>
+ <div class="ref">
+ <div dir="ltr">&#x202D;&#x05D0;1...&#x202C;</div>
+ <div dir="ltr">&#x202D;&#x05D0;1...&#x202C;</div>
+ <div dir="ltr">&#x202D;&#x05D0;1...&#x202C;</div>
+ <div dir="rtl">&#x202D;...1a&#x202C;</div>
+ <div dir="rtl">&#x202D;...1a&#x202C;</div>
+ <div dir="rtl">&#x202D;...1a&#x202C;</div>
+ </div>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/html/semantics/text-level-semantics/the-bdi-element/bdi-neutral-to-number-following-2.html b/testing/web-platform/tests/html/semantics/text-level-semantics/the-bdi-element/bdi-neutral-to-number-following-2.html
new file mode 100644
index 0000000000..62a3b50ffe
--- /dev/null
+++ b/testing/web-platform/tests/html/semantics/text-level-semantics/the-bdi-element/bdi-neutral-to-number-following-2.html
@@ -0,0 +1,53 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8"/>
+ <title>HTML Test: BDI: neutral to immediately following number</title>
+ <link rel="match" href="bdi-neutral-to-number-following-2-ref.html"/>
+ <link rel="author" title="Aharon Lanin" href="mailto:aharon@google.com"/>
+ <link rel="author" title="HTML5 bidi test WG" href="mailto:html5bidi@googlegroups.com"/>
+ <link rel="help" href="https://html.spec.whatwg.org/multipage/#the-bdi-element"/>
+ <meta name="assert" content="
+ 'For the purposes of applying the bidirectional algorithm to the paragraph-level
+ container that a bdi element finds itself within, the bdi element must be treated
+ like a U+FFFC OBJECT REPLACEMENT CHARACTER.'"/>
+ <style>
+ body{
+ font-size:2em;
+ }
+ .test, .ref {
+ border: medium solid gray;
+ width: 400px;
+ margin: 20px;
+ }
+ .comments { display: none; }
+ </style>
+ </head>
+ <body>
+ <div class="instructions"><p>Test passes if the two boxes below look exactly the same.</p></div>
+ <div class="comments">
+ Key to entities used below:
+ &#x05D0; ... &#x05D5; - The first six Hebrew letters (strongly RTL).
+ &#x202D; - The LRO (left-to-right override) formatting character.
+ &#x202C; - The PDF (pop directional formatting) formatting character; closes LRO.
+ If the BDI in the test's first DIV were a SPAN, the 1 would be rendered to the left
+ of the &#x05D0;
+ </div>
+ <div class="test">
+ <div dir="ltr"><bdi>&#x05D0;</bdi>1...</div>
+ <div dir="ltr"><bdi dir="rtl">&#x05D0;</bdi>1...</div>
+ <div dir="ltr"><bdi dir="ltr">&#x05D0;</bdi>1...</div>
+ <div dir="rtl"><bdi>a</bdi>1...</div>
+ <div dir="rtl"><bdi dir="ltr">a</bdi>1...</div>
+ <div dir="rtl"><bdi dir="rtl">a</bdi>1...</div>
+ </div>
+ <div class="ref">
+ <div dir="ltr">&#x202D;&#x05D0;1...&#x202C;</div>
+ <div dir="ltr">&#x202D;&#x05D0;1...&#x202C;</div>
+ <div dir="ltr">&#x202D;&#x05D0;1...&#x202C;</div>
+ <div dir="rtl">&#x202D;...1a&#x202C;</div>
+ <div dir="rtl">&#x202D;...1a&#x202C;</div>
+ <div dir="rtl">&#x202D;...1a&#x202C;</div>
+ </div>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/html/semantics/text-level-semantics/the-bdi-element/bdi-neutral-to-surrounding-run-ref.html b/testing/web-platform/tests/html/semantics/text-level-semantics/the-bdi-element/bdi-neutral-to-surrounding-run-ref.html
new file mode 100644
index 0000000000..d7967c77fc
--- /dev/null
+++ b/testing/web-platform/tests/html/semantics/text-level-semantics/the-bdi-element/bdi-neutral-to-surrounding-run-ref.html
@@ -0,0 +1,44 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8">
+ <link rel="author" title="Aharon Lanin" href="mailto:aharon@google.com">
+ <link rel="author" title="HTML5 bidi test WG" href="mailto:html5bidi@googlegroups.com">
+ <style>
+ body{
+ font-size:2em;
+ }
+ .test, .ref {
+ border: medium solid gray;
+ width: 400px;
+ margin: 20px;
+ }
+ .comments { display: none; }
+ </style>
+ </head>
+ <body>
+ <div class="instructions"><p>Test passes if the two boxes below look exactly the same.</p></div>
+ <div class="comments">
+ Key to entities used below:
+ &#x05D0; ... &#x05D5; - The first six Hebrew letters (strongly RTL).
+ &#x202D; - The LRO (left-to-right override) formatting character.
+ &#x202C; - The PDF (pop directional formatting) formatting character; closes LRO.
+ </div>
+ <div class="test">
+ <div dir="ltr">&#x202D;&#x05D2; &lt; [b] &lt; &#x05D0;...&#x202C;</div>
+ <div dir="ltr">&#x202D;&#x05D2; &lt; [b] &lt; &#x05D0;...&#x202C;</div>
+ <div dir="ltr">&#x202D;&#x05D2; &lt; [b] &lt; &#x05D0;...&#x202C;</div>
+ <div dir="rtl">&#x202D;...a &gt; [&#x05D1;] &gt; c&#x202C;</div>
+ <div dir="rtl">&#x202D;...a &gt; [&#x05D1;] &gt; c&#x202C;</div>
+ <div dir="rtl">&#x202D;...a &gt; [&#x05D1;] &gt; c&#x202C;</div>
+ </div>
+ <div class="ref">
+ <div dir="ltr">&#x202D;&#x05D2; &lt; [b] &lt; &#x05D0;...&#x202C;</div>
+ <div dir="ltr">&#x202D;&#x05D2; &lt; [b] &lt; &#x05D0;...&#x202C;</div>
+ <div dir="ltr">&#x202D;&#x05D2; &lt; [b] &lt; &#x05D0;...&#x202C;</div>
+ <div dir="rtl">&#x202D;...a &gt; [&#x05D1;] &gt; c&#x202C;</div>
+ <div dir="rtl">&#x202D;...a &gt; [&#x05D1;] &gt; c&#x202C;</div>
+ <div dir="rtl">&#x202D;...a &gt; [&#x05D1;] &gt; c&#x202C;</div>
+ </div>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/html/semantics/text-level-semantics/the-bdi-element/bdi-neutral-to-surrounding-run.html b/testing/web-platform/tests/html/semantics/text-level-semantics/the-bdi-element/bdi-neutral-to-surrounding-run.html
new file mode 100644
index 0000000000..bff339ec34
--- /dev/null
+++ b/testing/web-platform/tests/html/semantics/text-level-semantics/the-bdi-element/bdi-neutral-to-surrounding-run.html
@@ -0,0 +1,56 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8"/>
+ <title>HTML Test: BDI: neutral to surrounding letters</title>
+ <link rel="match" href="bdi-neutral-to-surrounding-run-ref.html">
+ <link rel="author" title="Aharon Lanin" href="mailto:aharon@google.com"/>
+ <link rel="author" title="HTML5 bidi test WG" href="mailto:html5bidi@googlegroups.com"/>
+ <link rel="help" href="https://html.spec.whatwg.org/multipage/#the-bdi-element"/>
+ <meta name="assert" content="
+ 'For the purposes of applying the bidirectional algorithm to the paragraph-level
+ container that a bdi element finds itself within, the bdi element must be treated
+ like a U+FFFC OBJECT REPLACEMENT CHARACTER.'
+ Thus, regardless of its content and its dir attribute (if any), a BDI will not prevent
+ a strongly RTL (or LTR) character preceding it from forming a single directional run with
+ another strongly RTL (LTR) character following it."/>
+ <style>
+ body{
+ font-size:2em;
+ }
+ .test, .ref {
+ border: medium solid gray;
+ width: 400px;
+ margin: 20px;
+ }
+ .comments { display: none; }
+ </style>
+ </head>
+ <body>
+ <div class="instructions"><p>Test passes if the two boxes below look exactly the same.</p></div>
+ <div class="comments">
+ Key to entities used below:
+ &#x05D0; ... &#x05D5; - The first six Hebrew letters (strongly RTL).
+ &#x202D; - The LRO (left-to-right override) formatting character.
+ &#x202C; - The PDF (pop directional formatting) formatting character; closes LRO.
+ If the BDI in the test's first DIV were a SPAN, its b would prevent the &#x05D0; and the &#x05D1;
+ from forming a single RTL run and thus keep the &gt;s between from being mirrored into &lt;s.
+ </div>
+ <div class="test">
+ <div dir="ltr">&#x05D0; &gt; <bdi>[b]</bdi> &gt; &#x05D2;...</div>
+ <div dir="ltr">&#x05D0; &gt; <bdi dir="ltr">[b]</bdi> &gt; &#x05D2;...</div>
+ <div dir="ltr">&#x05D0; &gt; <bdi dir="rtl">[b]</bdi> &gt; &#x05D2;...</div>
+ <div dir="rtl">a &gt; <bdi>[&#x05D1;]</bdi> &gt; c...</div>
+ <div dir="rtl">a &gt; <bdi dir="ltr">[&#x05D1;]</bdi> &gt; c...</div>
+ <div dir="rtl">a &gt; <bdi dir="rtl">[&#x05D1;]</bdi> &gt; c...</div>
+ </div>
+ <div class="ref">
+ <div dir="ltr">&#x202D;&#x05D2; &lt; [b] &lt; &#x05D0;...&#x202C;</div>
+ <div dir="ltr">&#x202D;&#x05D2; &lt; [b] &lt; &#x05D0;...&#x202C;</div>
+ <div dir="ltr">&#x202D;&#x05D2; &lt; [b] &lt; &#x05D0;...&#x202C;</div>
+ <div dir="rtl">&#x202D;...a &gt; [&#x05D1;] &gt; c&#x202C;</div>
+ <div dir="rtl">&#x202D;...a &gt; [&#x05D1;] &gt; c&#x202C;</div>
+ <div dir="rtl">&#x202D;...a &gt; [&#x05D1;] &gt; c&#x202C;</div>
+ </div>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/html/semantics/text-level-semantics/the-bdi-element/bdi-neutral-wrapped-ref.html b/testing/web-platform/tests/html/semantics/text-level-semantics/the-bdi-element/bdi-neutral-wrapped-ref.html
new file mode 100644
index 0000000000..9859de4747
--- /dev/null
+++ b/testing/web-platform/tests/html/semantics/text-level-semantics/the-bdi-element/bdi-neutral-wrapped-ref.html
@@ -0,0 +1,52 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8">
+ <link rel="author" title="Aharon Lanin" href="mailto:aharon@google.com">
+ <link rel="author" title="HTML5 bidi test WG" href="mailto:html5bidi@googlegroups.com">
+ <style>
+ body{
+ font-size:2em;
+ }
+ .test, .ref {
+ border: medium solid gray;
+ width: 400px;
+ margin: 20px;
+ }
+ .comments { display: none; }
+ </style>
+ </head>
+ <body>
+ <div class="instructions"><p>Test passes if the two boxes below look exactly the same.</p></div>
+ <div class="comments">
+ Key to entities used below:
+ &#x05D0; ... &#x05D5; - The first six Hebrew letters (strongly RTL).
+ &#x202D; - The LRO (left-to-right override) formatting character.
+ &#x202C; - The PDF (pop directional formatting) formatting character; closes LRO.
+ </div>
+ <div class="test">
+ <div dir="ltr">
+ &#x202D;b &lt; &#x05D0;&#x202C;<br/>
+ &#x202D;&gt;&gt;&gt;&#x202C;<br/>
+ &#x202D;&#x05D3; &lt; c...&#x202C;
+ </div>
+ <div dir="rtl">
+ &#x202D;a &gt; &#x05D1;&#x202C;<br/>
+ &#x202D;&lt;&lt;&lt;&#x202C;<br/>
+ &#x202D;...&#x05D2; &gt; d&#x202C;
+ </div>
+ </div>
+ <div class="ref">
+ <div dir="ltr">
+ &#x202D;b &lt; &#x05D0;&#x202C;<br/>
+ &#x202D;&gt;&gt;&gt;&#x202C;<br/>
+ &#x202D;&#x05D3; &lt; c...&#x202C;
+ </div>
+ <div dir="rtl">
+ &#x202D;a &gt; &#x05D1;&#x202C;<br/>
+ &#x202D;&lt;&lt;&lt;&#x202C;<br/>
+ &#x202D;...&#x05D2; &gt; d&#x202C;
+ </div>
+ </div>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/html/semantics/text-level-semantics/the-bdi-element/bdi-neutral-wrapped.html b/testing/web-platform/tests/html/semantics/text-level-semantics/the-bdi-element/bdi-neutral-wrapped.html
new file mode 100644
index 0000000000..3e21fcb0fd
--- /dev/null
+++ b/testing/web-platform/tests/html/semantics/text-level-semantics/the-bdi-element/bdi-neutral-wrapped.html
@@ -0,0 +1,73 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8"/>
+ <title>HTML Test: BDI: neutral when wrapped</title>
+ <link rel="match" href="bdi-neutral-wrapped-ref.html">
+ <link rel="author" title="Aharon Lanin" href="mailto:aharon@google.com"/>
+ <link rel="author" title="HTML5 bidi test WG" href="mailto:html5bidi@googlegroups.com"/>
+ <link rel="help" href="https://html.spec.whatwg.org/multipage/#the-bdi-element"/>
+ <meta name="assert" content="
+ 'For the purposes of applying the bidirectional algorithm to the paragraph-level
+ container that a bdi element finds itself within, the bdi element must be treated
+ like a U+FFFC OBJECT REPLACEMENT CHARACTER.'
+ This should hold even if the BDI's content is wrapped over more than one line."/>
+ <style>
+ body{
+ font-size:2em;
+ }
+ .test, .ref {
+ border: medium solid gray;
+ width: 400px;
+ margin: 20px;
+ }
+ .comments { display: none; }
+ </style>
+ </head>
+ <body>
+ <div class="instructions"><p>Test passes if the two boxes below look exactly the same.</p></div>
+ <div class="comments">
+ Key to entities used below:
+ &#xA0; - Non-breaking space.
+ &#x05D0; ... &#x05D5; - The first six Hebrew letters (strongly RTL).
+ &#x202D; - The LRO (left-to-right override) formatting character.
+ &#x202C; - The PDF (pop directional formatting) formatting character; closes LRO.
+ In the test below, the non-breaking spaces in the BDI's middle "word" make it so long that it
+ must be displayed on a line of its own, with the BDI wrapped before and after it. At the same
+ time, the content surrounding the BDI is supposed to form a single directional run, despite
+ the containing element and the BDI both having the opposite direction, because the BDI must be
+ treated as a neutral. Thus, on the line containing the first part of the BDI, the BDI's
+ content must appear after the content preceding it, and on the line containing the last part
+ of the BDI, the BDI content must appear before the content following it, where both 'before'
+ and 'after' are defined relative to the surrounding directional run.
+ </div>
+ <div class="test">
+ <div dir="ltr">
+ &#x05D0; &gt;
+ <bdi>b
+&gt;&gt;&gt;&#xA0;&#xA0;&#xA0;&#xA0;&#xA0;&#xA0;&#xA0;&#xA0;&#xA0;&#xA0;&#xA0;&#xA0;&#xA0;&#xA0;&#xA0;&#xA0;&#xA0;&#xA0;&#xA0;&#xA0;&#xA0;&#xA0;&#xA0;&#xA0;&#xA0;&#xA0;&#xA0;&#xA0;&#xA0;&#xA0;&#xA0;&#xA0;&#xA0;&#xA0;&#xA0;&#xA0;&#xA0;&#xA0;&#xA0;&#xA0;&#xA0;&#xA0;&#xA0;&#xA0;&#xA0;&#xA0;&#xA0;&#xA0;&#xA0;
+ c</bdi>
+ &gt; &#x05D3;...
+ </div>
+ <div dir="rtl">
+ a &gt;
+ <bdi>&#x05D1;
+&gt;&gt;&gt;&#xA0;&#xA0;&#xA0;&#xA0;&#xA0;&#xA0;&#xA0;&#xA0;&#xA0;&#xA0;&#xA0;&#xA0;&#xA0;&#xA0;&#xA0;&#xA0;&#xA0;&#xA0;&#xA0;&#xA0;&#xA0;&#xA0;&#xA0;&#xA0;&#xA0;&#xA0;&#xA0;&#xA0;&#xA0;&#xA0;&#xA0;&#xA0;&#xA0;&#xA0;&#xA0;&#xA0;&#xA0;&#xA0;&#xA0;&#xA0;&#xA0;&#xA0;&#xA0;&#xA0;&#xA0;&#xA0;&#xA0;&#xA0;&#xA0;
+ &#x05D2;</bdi>
+ &gt; d...
+ </div>
+ </div>
+ <div class="ref">
+ <div dir="ltr">
+ &#x202D;b &lt; &#x05D0;&#x202C;<br/>
+ &#x202D;&gt;&gt;&gt;&#x202C;<br/>
+ &#x202D;&#x05D3; &lt; c...&#x202C;
+ </div>
+ <div dir="rtl">
+ &#x202D;a &gt; &#x05D1;&#x202C;<br/>
+ &#x202D;&lt;&lt;&lt;&#x202C;<br/>
+ &#x202D;...&#x05D2; &gt; d&#x202C;
+ </div>
+ </div>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/html/semantics/text-level-semantics/the-bdi-element/bdi-paragraph-level-container-ref.html b/testing/web-platform/tests/html/semantics/text-level-semantics/the-bdi-element/bdi-paragraph-level-container-ref.html
new file mode 100644
index 0000000000..0c74ecf68a
--- /dev/null
+++ b/testing/web-platform/tests/html/semantics/text-level-semantics/the-bdi-element/bdi-paragraph-level-container-ref.html
@@ -0,0 +1,36 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8">
+ <link rel="author" title="Aharon Lanin" href="mailto:aharon@google.com">
+ <link rel="author" title="HTML5 bidi test WG" href="mailto:html5bidi@googlegroups.com">
+ <style>
+ body{
+ font-size:2em;
+ }
+ .test, .ref {
+ border: medium solid gray;
+ width: 500px;
+ margin: 20px;
+ }
+ .comments { display: none; }
+ </style>
+ </head>
+ <body>
+ <div class="instructions"><p>Test passes if the two boxes below look exactly the same.</p></div>
+ <div class="comments">
+ Key to entities used below:
+ &#x05D0; ... &#x05D5; - The first six Hebrew letters (strongly RTL).
+ &#x202D; - The LRO (left-to-right override) formatting character.
+ &#x202C; - The PDF (pop directional formatting) formatting character; closes LRO.
+ </div>
+ <div class="test">
+ <div dir="ltr">&#x202D;&#x05D0; [1 2 3 b] c [d &#x05D4;?!] &#x05D5;...&#x202C;</div>
+ <div dir="rtl">&#x202D;...f [!?e &#x05D3;] &#x05D2; [&#x05D1; 3 2 1] a&#x202C;</div>
+ </div>
+ <div class="ref">
+ <div dir="ltr">&#x202D;&#x05D0; [1 2 3 b] c [d &#x05D4;?!] &#x05D5;...&#x202C;</div>
+ <div dir="rtl">&#x202D;...f [!?e &#x05D3;] &#x05D2; [&#x05D1; 3 2 1] a&#x202C;</div>
+ </div>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/html/semantics/text-level-semantics/the-bdi-element/bdi-paragraph-level-container.html b/testing/web-platform/tests/html/semantics/text-level-semantics/the-bdi-element/bdi-paragraph-level-container.html
new file mode 100644
index 0000000000..f133a95772
--- /dev/null
+++ b/testing/web-platform/tests/html/semantics/text-level-semantics/the-bdi-element/bdi-paragraph-level-container.html
@@ -0,0 +1,46 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8"/>
+ <title>HTML Test: BDI: paragraph-level container</title>
+ <link rel="match" href="bdi-paragraph-level-container-ref.html"/>
+ <link rel="author" title="Aharon Lanin" href="mailto:aharon@google.com"/>
+ <link rel="author" title="HTML5 bidi test WG" href="mailto:html5bidi@googlegroups.com"/>
+ <link rel="help" href="https://html.spec.whatwg.org/multipage/#the-bdi-element"/>
+ <meta name="assert" content="
+ 'For the purposes of applying the bidirectional algorithm to the contents of a bdi element,
+ user agents must treat the element as a paragraph-level container.'
+ Thus, under no circumstances should the content outside a BDI affect the visual
+ ordering of the BDI's content."/>
+ <style>
+ body{
+ font-size:2em;
+ }
+ .test, .ref {
+ border: medium solid gray;
+ width: 500px;
+ margin: 20px;
+ }
+ .comments { display: none; }
+ </style>
+ </head>
+ <body>
+ <div class="instructions"><p>Test passes if the two boxes below look exactly the same.</p></div>
+ <div class="comments">
+ Key to entities used below:
+ &#x05D0; ... &#x05D5; - The first six Hebrew letters (strongly RTL).
+ &#x202D; - The LRO (left-to-right override) formatting character.
+ &#x202C; - The PDF (pop directional formatting) formatting character; closes LRO.
+ If the BDIs in the test's first DIV were just SPANs, the &#x05D0; would order the 1 2 3 as
+ 3 2 1, and the &#x05D5; would (with the &#x05D4;) order the ?! as !?.
+ </div>
+ <div class="test">
+ <div dir="ltr">&#x05D0; <bdi>[1 2 3 b]</bdi> c <bdi>[d &#x05D4;?!]</bdi> &#x05D5;...</div>
+ <div dir="rtl">a <bdi>[1 2 3 &#x05D1;]</bdi> &#x05D2; <bdi>[&#x05D3; e?!]</bdi> f...</div>
+ </div>
+ <div class="ref">
+ <div dir="ltr">&#x202D;&#x05D0; [1 2 3 b] c [d &#x05D4;?!] &#x05D5;...&#x202C;</div>
+ <div dir="rtl">&#x202D;...f [!?e &#x05D3;] &#x05D2; [&#x05D1; 3 2 1] a&#x202C;</div>
+ </div>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/html/semantics/text-level-semantics/the-bdo-element/bdo-child.html b/testing/web-platform/tests/html/semantics/text-level-semantics/the-bdo-element/bdo-child.html
new file mode 100644
index 0000000000..feadc26d7b
--- /dev/null
+++ b/testing/web-platform/tests/html/semantics/text-level-semantics/the-bdo-element/bdo-child.html
@@ -0,0 +1,17 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8">
+ <title>HTML Test: bdo - text directionality formatting control for its children</title>
+ <link rel="author" title="Intel" href="http://www.intel.com/">
+ <link rel="help" href="https://html.spec.whatwg.org/multipage/#the-bdo-element">
+ <link rel="match" href="bidi-001-ref.html">
+ <meta name="assert" content="Check if the bdo element represents explicit text directionality formatting control for its children.">
+ </head>
+ <body>
+ <p>Test passes if there is text 'WERBEH'.</p>
+ <bdo dir="rtl">
+ <span>HEBREW</span>
+ </bdo>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/html/semantics/text-level-semantics/the-bdo-element/bdo-ltr.html b/testing/web-platform/tests/html/semantics/text-level-semantics/the-bdo-element/bdo-ltr.html
new file mode 100644
index 0000000000..8a7861086a
--- /dev/null
+++ b/testing/web-platform/tests/html/semantics/text-level-semantics/the-bdo-element/bdo-ltr.html
@@ -0,0 +1,15 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8">
+ <title>HTML Test: The value 'ltr' of dir attribute specifies a left-to-right override</title>
+ <link rel="author" title="Intel" href="http://www.intel.com/">
+ <link rel="help" href="https://html.spec.whatwg.org/multipage/#the-bdo-element">
+ <link rel="match" href="bidi-001-ref.html">
+ <meta name="assert" content="Check if the value ltr of dir attribute specifies a left-to-right override">
+ </head>
+ <body>
+ <p>Test passes if there is text 'WERBEH'.</p>
+ <bdo dir="ltr">WERBEH</bdo>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/html/semantics/text-level-semantics/the-bdo-element/bdo-override.html b/testing/web-platform/tests/html/semantics/text-level-semantics/the-bdo-element/bdo-override.html
new file mode 100644
index 0000000000..75a45e198f
--- /dev/null
+++ b/testing/web-platform/tests/html/semantics/text-level-semantics/the-bdo-element/bdo-override.html
@@ -0,0 +1,18 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8">
+ <title>HTML Test: bdo - override the Unicode bidirectional algorithm</title>
+ <link rel="author" title="Intel" href="http://www.intel.com/">
+ <link rel="help" href="https://html.spec.whatwg.org/multipage/#the-bdo-element">
+ <link rel="match" href="bidi-001-ref.html">
+ <meta name="assert" content="Check if authors could override the Unicode bidirectional algorithm
+ by explicitly specifying a direction override of bdo element">
+ </head>
+ <body>
+ <p>Test passes if there is text 'WERBEH'.</p>
+ <p>
+ &#x202E;<bdo dir="ltr">WERBEH</bdo>&#x202C;
+ </p>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/html/semantics/text-level-semantics/the-bdo-element/bidi-001-ref.html b/testing/web-platform/tests/html/semantics/text-level-semantics/the-bdo-element/bidi-001-ref.html
new file mode 100644
index 0000000000..83d2dc4a16
--- /dev/null
+++ b/testing/web-platform/tests/html/semantics/text-level-semantics/the-bdo-element/bidi-001-ref.html
@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<html>
+<head>
+<meta charset="UTF-8">
+<title>directional type reference</title>
+</head>
+<body>
+<p>Test passes if there is text 'WERBEH'.</p>
+<div>WERBEH</div>
+</body>
+</html>
diff --git a/testing/web-platform/tests/html/semantics/text-level-semantics/the-bdo-element/bidi-001.html b/testing/web-platform/tests/html/semantics/text-level-semantics/the-bdo-element/bidi-001.html
new file mode 100644
index 0000000000..772dcf43b3
--- /dev/null
+++ b/testing/web-platform/tests/html/semantics/text-level-semantics/the-bdo-element/bidi-001.html
@@ -0,0 +1,14 @@
+<!DOCTYPE html>
+<html>
+<head>
+<meta charset="UTF-8">
+<title>directional type</title>
+<meta content="W3C" name="author">
+<link rel="match" href="bidi-001-ref.html">
+<meta name="assert" content="Test text bidirectionality using the bdo element">
+</head>
+<body dir='ltr'>
+<p>Test passes if there is text 'WERBEH'.</p>
+<bdo dir="rtl">HEBREW</bdo>
+</body>
+</html>
diff --git a/testing/web-platform/tests/html/semantics/text-level-semantics/the-br-element/br-bidi-in-inline-ancestors-ref.html b/testing/web-platform/tests/html/semantics/text-level-semantics/the-br-element/br-bidi-in-inline-ancestors-ref.html
new file mode 100644
index 0000000000..c2dd4daa7a
--- /dev/null
+++ b/testing/web-platform/tests/html/semantics/text-level-semantics/the-br-element/br-bidi-in-inline-ancestors-ref.html
@@ -0,0 +1,38 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8" />
+ <link rel="author" title="Aharon Lanin" href="mailto:aharon@google.com"/>
+ <link rel="author" title="HTML5 bidi test WG" href="mailto:html5bidi@googlegroups.com" />
+ <style>
+ body{
+ font-size:2em;
+ }
+ .test, .ref {
+ border: medium solid gray;
+ width: 400px;
+ margin: 20px;
+ }
+ .comments { display: none; }
+ </style>
+ </head>
+ <body>
+ <div class="instructions"><p>Test passes if the two boxes below look exactly the same.</p></div>
+ <div class="comments">
+ Key to entities used below:
+ &#x05D0; ... &#x05D8; - The first nine Hebrew letters (strongly RTL).
+ &#x202D; - The LRO (left-to-right override) formatting character.
+ &#x202C; - The PDF (pop directional formatting) formatting character; closes LRO.
+ </div>
+ <div class="test">
+ &#x202D;&#x05D0;&#x05D1; &#x05D2;&#x05D3; 1. I like &#x05D4;. fg hi&#x202C;
+ <br/>
+ &#x202D;ab cd 2. &#x05D4; is great! &#x05D5;&#x05D6; &#x05D7;&#x05D8;&#x202C;
+ </div>
+ <div class="ref">
+ &#x202D;&#x05D0;&#x05D1; &#x05D2;&#x05D3; 1. I like &#x05D4;. fg hi&#x202C;
+ <br/>
+ &#x202D;ab cd 2. &#x05D4; is great! &#x05D5;&#x05D6; &#x05D7;&#x05D8;&#x202C;
+ </div>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/html/semantics/text-level-semantics/the-br-element/br-bidi-in-inline-ancestors.html b/testing/web-platform/tests/html/semantics/text-level-semantics/the-br-element/br-bidi-in-inline-ancestors.html
new file mode 100644
index 0000000000..89e7f2f1aa
--- /dev/null
+++ b/testing/web-platform/tests/html/semantics/text-level-semantics/the-br-element/br-bidi-in-inline-ancestors.html
@@ -0,0 +1,59 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8" />
+ <title>HTML Test: BR in inline ancestors</title>
+ <link rel="match" href="br-bidi-in-inline-ancestors-ref.html">
+ <link rel="author" title="Aharon Lanin" href="mailto:aharon@google.com"/>
+ <link rel="author" title="HTML5 bidi test WG" href="mailto:html5bidi@googlegroups.com" />
+ <link rel="help" href="https://html.spec.whatwg.org/multipage/#the-br-element"/>
+ <link rel="help" href="http://www.w3.org/TR/css3-writing-modes/#unicode-bidi" />
+ <meta name="assert" content="
+ 'A br element should separate paragraphs for the purposes of the Unicode bidirectional
+ algorithm.'
+ 'If an inline element is broken around a bidi paragraph boundary (e.g. if split by a block or
+ forced paragraph break), then the bidi control codes corresponding to the end of the element
+ are added before the interruption and the codes corresponding to the start of the element are
+ added after it. (In other words, any embedding levels or overrides started by the element are
+ closed at the paragraph break and reopened on the other side of it.)'" />
+ <style>
+ body{
+ font-size:2em;
+ }
+ .test, .ref {
+ border: medium solid gray;
+ width: 400px;
+ margin: 20px;
+ }
+ .comments { display: none; }
+ </style>
+ </head>
+ <body>
+ <div class="instructions"><p>Test passes if the two boxes below look exactly the same.</p></div>
+ <div class="comments">
+ Key to entities used below:
+ &#x05D0; ... &#x05D8; - The first nine Hebrew letters (strongly RTL).
+ &#x200E; - The LRM (left-to-right mark) formatting character (invisible, stronly LTR).
+ &#x200F; - The RLM (right-to-left mark) formatting character (invisible, stronly RTL).
+ &#x202D; - The LRO (left-to-right override) formatting character.
+ &#x202C; - The PDF (pop directional formatting) formatting character; closes LRO.
+ </div>
+ <div class="test">
+ &#x05D1;&#x05D0;&#x200E;
+ <bdo dir="rtl">ih
+ <bdo dir="ltr">&#x05D2;&#x05D3;
+ <span dir="rtl">fg&#x200F;
+ <span dir="ltr">1. I like &#x05D4;.<br/>
+ 2. &#x05D4; is great!</span>
+ &#x200F;cd</span>
+ &#x05D5;&#x05D6;</bdo>
+ ba</bdo>
+ &#x200E;&#x05D8;&#x05D7;
+ </div>
+ <div class="ref">
+ &#x202D;&#x05D0;&#x05D1; &#x05D2;&#x05D3; 1. I like &#x05D4;. fg hi&#x202C;
+ <br/>
+ &#x202D;ab cd 2. &#x05D4; is great! &#x05D5;&#x05D6; &#x05D7;&#x05D8;&#x202C;
+ </div>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/html/semantics/text-level-semantics/the-br-element/br-bidi-ref.html b/testing/web-platform/tests/html/semantics/text-level-semantics/the-br-element/br-bidi-ref.html
new file mode 100644
index 0000000000..f07c077917
--- /dev/null
+++ b/testing/web-platform/tests/html/semantics/text-level-semantics/the-br-element/br-bidi-ref.html
@@ -0,0 +1,19 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <title>HTML Test reference: BR separates bidi paragraph</title>
+ <link rel="author" title="Amir E. Aharoni" href="mailto:amir.aharoni@mail.huji.ac.il"/>
+ <link rel="author" title="Eyal Sela" href="mailto:eyal@post.isoc.org.il"/>
+ <link rel="author" title="Aharon Lanin" href="mailto:aharon@google.com"/>
+ <link rel="help" href="https://html.spec.whatwg.org/multipage/#the-br-element"/>
+ </head>
+ <body>
+ <div class="instructions"><p>Test passes if the rightmost character in the first line below is a full stop and to the left of it is a Hebrew letter.</p></div>
+ <div class="test">
+ A Hebrew letter and a full stop: &#x05d0;.&lrm;
+ <br />
+ &#x05d0; this line begins with a Hebrew letter.
+ </div>
+</p>
+</body>
+</html>
diff --git a/testing/web-platform/tests/html/semantics/text-level-semantics/the-br-element/br-bidi.html b/testing/web-platform/tests/html/semantics/text-level-semantics/the-br-element/br-bidi.html
new file mode 100644
index 0000000000..1dfa6836f3
--- /dev/null
+++ b/testing/web-platform/tests/html/semantics/text-level-semantics/the-br-element/br-bidi.html
@@ -0,0 +1,22 @@
+<!DOCTYPE html>
+<html>
+ <head>
+ <meta charset="utf-8"/>
+ <title>HTML Test: BR separates bidi paragraph</title>
+ <link rel="match" href="br-bidi-ref.html">
+ <link rel="author" title="Amir E. Aharoni" href="mailto:amir.aharoni@mail.huji.ac.il"/>
+ <link rel="author" title="Eyal Sela" href="mailto:eyal@post.isoc.org.il"/>
+ <link rel="author" title="Aharon Lanin" href="mailto:aharon@google.com"/>
+ <link rel="help" href="https://html.spec.whatwg.org/multipage/#the-br-element"/>
+ <meta name="assert"
+ content="A br element should separate paragraphs for the purposes of the Unicode bidirectional algorithm."/>
+ </head>
+ <body>
+ <div class="instructions"><p>Test passes if the rightmost character in the first line below is a full stop and to the left of it is a Hebrew letter.</p></div>
+ <div class="test">
+ A Hebrew letter and a full stop: &#x05d0;.
+ <br />
+ &#x05d0; this line begins with a Hebrew letter.
+ </div>
+ </body>
+</html>
diff --git a/testing/web-platform/tests/html/semantics/text-level-semantics/the-ruby-element/rt-without-ruby-crash.html b/testing/web-platform/tests/html/semantics/text-level-semantics/the-ruby-element/rt-without-ruby-crash.html
new file mode 100644
index 0000000000..3caed3a02e
--- /dev/null
+++ b/testing/web-platform/tests/html/semantics/text-level-semantics/the-ruby-element/rt-without-ruby-crash.html
@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<link rel="author" title="Morten Stenshorne" href="mailto:mstensho@chromium.org">
+<link rel="help" href="https://bugs.chromium.org/p/chromium/issues/detail?id=967255">
+<rt style="display:block;">
+ <div></div>
+</rt>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script>
+ test(()=> { }, "No crash");
+</script>
diff --git a/testing/web-platform/tests/html/semantics/text-level-semantics/the-ruby-element/ruby-usage-notref.html b/testing/web-platform/tests/html/semantics/text-level-semantics/the-ruby-element/ruby-usage-notref.html
new file mode 100644
index 0000000000..f5747811ae
--- /dev/null
+++ b/testing/web-platform/tests/html/semantics/text-level-semantics/the-ruby-element/ruby-usage-notref.html
@@ -0,0 +1,6 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>HTML Reference File</title>
+<link rel="author" title="Intel" href="http://www.intel.com/">
+
+<p>君くん子しは和わして同どうぜず</p>
diff --git a/testing/web-platform/tests/html/semantics/text-level-semantics/the-ruby-element/ruby-usage.html b/testing/web-platform/tests/html/semantics/text-level-semantics/the-ruby-element/ruby-usage.html
new file mode 100644
index 0000000000..59c076cd09
--- /dev/null
+++ b/testing/web-platform/tests/html/semantics/text-level-semantics/the-ruby-element/ruby-usage.html
@@ -0,0 +1,8 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>HTML test: ruby - mark phrasing content</title>
+<link rel="author" title="Intel" href="http://www.intel.com/">
+<link rel="mismatch" href="ruby-usage-notref.html">
+<link rel="help" href="https://html.spec.whatwg.org/multipage/text-level-semantics.html#the-ruby-element"/>
+
+<p><ruby>君<rt>くん</ruby><ruby>子<rt>し</ruby>は<ruby>和<rt>わ</ruby>して<ruby>同<rt>どう</ruby>ぜず</p>
diff --git a/testing/web-platform/tests/html/semantics/text-level-semantics/the-time-element/001.html b/testing/web-platform/tests/html/semantics/text-level-semantics/the-time-element/001.html
new file mode 100644
index 0000000000..e1cd0480ac
--- /dev/null
+++ b/testing/web-platform/tests/html/semantics/text-level-semantics/the-time-element/001.html
@@ -0,0 +1,68 @@
+<!doctype html>
+<html>
+ <head>
+ <meta charset=utf-8>
+ <title>HTML time element API</title>
+ <style>
+#time { visibility: hidden; }
+ </style>
+ <link rel="help" href="https://html.spec.whatwg.org/multipage/#the-time-element">
+ <script src="/resources/testharness.js"></script>
+ <script src="/resources/testharnessreport.js"></script>
+ </head>
+ <body>
+ <div id="log"></div>
+ <!-- intentionally nested to test parsing rules -->
+ <p id="time"><time pubdate datetime="2000-02-01T03:04:05Z">Dummy text <time>2001-06-07T<time>08:09<time></time></time>Z</time></time></p>
+ <script type="text/javascript">
+function makeTime(dateTime,contents,dateTimeProp) {
+ var timeEl = document.createElement('time');
+ if( dateTime ) {
+ timeEl.setAttribute('datetime',dateTime);
+ }
+ if( contents ) {
+ timeEl.innerHTML = contents;
+ }
+ if( dateTimeProp ) {
+ timeEl.dateTime = dateTimeProp;
+ }
+ return timeEl;
+}
+
+var timep = document.getElementById('time');
+var times = timep.getElementsByTagName('time');
+
+//TIME elements
+test(function () {
+ assert_equals( times.length, 4 );
+}, 'HTML parsing should locate 4 time elements in this document');
+test(function () {
+ assert_true( !!window.HTMLTimeElement );
+}, 'HTMLTimeElement should be exposed for prototyping');
+test(function () {
+ assert_true( makeTime() instanceof window.HTMLTimeElement, 'createElement variant' );
+ assert_true( times[0] instanceof window.HTMLTimeElement, 'HTML parsing variant' );
+}, 'the time elements should be instanceof HTMLTimeElement');
+
+//dateTime
+test(function () {
+ assert_equals( makeTime('2000-02-01T03:04:05Z','2001-02-01T03:04:05Z').dateTime, '2000-02-01T03:04:05Z' );
+}, 'the datetime attribute should be reflected by the .dateTime property');
+test(function () {
+ assert_equals( typeof makeTime().dateTime, 'string', 'typeof test' );
+ assert_equals( makeTime().dateTime, '', 'value test' );
+}, 'the dateTime IDL property should default to an empty string');
+test(function () {
+ assert_equals( makeTime(false,false,'2000-02-01T03:04:05Z').dateTime, '2000-02-01T03:04:05Z' );
+}, 'the dateTime property should be read/write');
+test(function () {
+ assert_equals( makeTime('go fish').dateTime, 'go fish' );
+}, 'the datetime attribute should be reflected by the .dateTime property even if it is invalid');
+test(function () {
+ assert_equals( makeTime(false,'2000-02-01T03:04:05Z').dateTime, '' );
+}, 'the datetime attribute should not reflect the textContent');
+
+ </script>
+
+ </body>
+</html>
diff --git a/testing/web-platform/tests/html/semantics/text-level-semantics/the-wbr-element/wbr-element-ref.html b/testing/web-platform/tests/html/semantics/text-level-semantics/the-wbr-element/wbr-element-ref.html
new file mode 100644
index 0000000000..bedb6d62e8
--- /dev/null
+++ b/testing/web-platform/tests/html/semantics/text-level-semantics/the-wbr-element/wbr-element-ref.html
@@ -0,0 +1,10 @@
+<!DOCTYPE html>
+<meta charset=utf-8>
+<title>The wbr element</title>
+<link rel="author" title="Denis Ah-Kang" href="mailto:denis@w3.org">
+<meta name="flags" content="ahem">
+<link rel="stylesheet" type="text/css" href="/fonts/ahem.css" />
+<style>
+ p {font:15px/1 Ahem;}
+</style>
+<p>Loremipsumdolorsit<br>amet,consectetur<br>adipisicingelit,sed<br>doeiusmodtempor<br>incididuntutlaboreet<br>doloremagnaaliqua.Ut<br>enimadminimveniam,<br>quisnostrud<br>exercitationullamco<br>laborisnisiutaliquip<br>exeacommodo<br>consequat.Duisaute<br>iruredolorin<br>reprehenderitin<br>voluptatevelitesse<br>cillumdoloreeufugiat<br>nullapariatur.<br>Excepteursint<br>occaecatcupidatatnon<br>proident,suntinculpa<br>quiofficiadeserunt<br>mollitanimidest<br>laborum.</p>
diff --git a/testing/web-platform/tests/html/semantics/text-level-semantics/the-wbr-element/wbr-element.html b/testing/web-platform/tests/html/semantics/text-level-semantics/the-wbr-element/wbr-element.html
new file mode 100644
index 0000000000..aa3912028e
--- /dev/null
+++ b/testing/web-platform/tests/html/semantics/text-level-semantics/the-wbr-element/wbr-element.html
@@ -0,0 +1,12 @@
+<!DOCTYPE html>
+<meta charset=utf-8>
+<title>The wbr element</title>
+<link rel="author" title="Denis Ah-Kang" href="mailto:denis@w3.org">
+<link rel=help href="https://html.spec.whatwg.org/multipage/#rendering">
+<link rel="match" href="wbr-element-ref.html">
+<meta name="flags" content="ahem">
+<link rel="stylesheet" type="text/css" href="/fonts/ahem.css" />
+<style>
+ p {max-width: 300px; font:15px/1 Ahem;}
+</style>
+<p>AHEM_<wbr>ipsum<wbr>dolor<wbr>sit<wbr>amet,<wbr>consectetur<wbr>adipisicing<wbr>elit,<wbr>sed<wbr>do<wbr>eiusmod<wbr>tempor<wbr>incididunt<wbr>ut<wbr>labore<wbr>et<wbr>dolore<wbr>magna<wbr>aliqua.<wbr>Ut<wbr>enim<wbr>ad<wbr>minim<wbr>veniam,<wbr>quis<wbr>nostrud<wbr>exercitation<wbr>ullamco<wbr>laboris<wbr>nisi<wbr>ut<wbr>aliquip<wbr>ex<wbr>ea<wbr>commodo<wbr>consequat.<wbr>Duis<wbr>aute<wbr>irure<wbr>dolor<wbr>in<wbr>reprehenderit<wbr>in<wbr>voluptate<wbr>velit<wbr>esse<wbr>cillum<wbr>dolore<wbr>eu<wbr>fugiat<wbr>nulla<wbr>pariatur.<wbr>Excepteur<wbr>sint<wbr>occaecat<wbr>cupidatat<wbr>non<wbr>proident,<wbr>sunt<wbr>in<wbr>culpa<wbr>qui<wbr>officia<wbr>deserunt<wbr>mollit<wbr>anim<wbr>id<wbr>est<wbr>laborum.</p>