Update web-platform-tests to revision be4a903bca0a01b794bebf486f707c9f8e9e9ff6

tests/wpt/metadata-layout-2020/FileAPI/url/url-in-tags-revoke.window.js.ini

@@ -4,7 +4,7 @@
     expected: TIMEOUT
 
   [Opening a blob URL in a new window immediately before revoking it works.]
-    expected: TIMEOUT
+    expected: FAIL
 
   [Fetching a blob URL immediately before revoking it works in an iframe.]
     expected: FAIL

tests/wpt/metadata-layout-2020/css/CSS2/floats/hit-test-floats-002.html.ini

@@ -0,0 +1,4 @@
+[hit-test-floats-002.html]
+  [Hit test float]
+    expected: FAIL
+

tests/wpt/metadata-layout-2020/css/CSS2/floats/hit-test-floats-003.html.ini

@@ -0,0 +1,4 @@
+[hit-test-floats-003.html]
+  [Miss float below something else]
+    expected: FAIL
+

tests/wpt/metadata-layout-2020/css/CSS2/floats/hit-test-floats-004.html.ini

@@ -0,0 +1,4 @@
+[hit-test-floats-004.html]
+  [Miss float below something else]
+    expected: FAIL
+

tests/wpt/metadata-layout-2020/css/cssom-view/MediaQueryList-addListener-removeListener.html.ini

@@ -2,6 +2,3 @@
   [listeners are called when <iframe> is resized]
     expected: FAIL
 
-  [listeners are called correct number of times]
-    expected: FAIL
-

tests/wpt/metadata-layout-2020/css/cssom-view/elementsFromPoint-invalid-cases.html.ini

@@ -0,0 +1,4 @@
+[elementsFromPoint-invalid-cases.html]
+  [The root element is the last element returned for otherwise empty queries within the viewport]
+    expected: FAIL
+

tests/wpt/metadata-layout-2020/fetch/content-type/response.window.js.ini

@@ -315,27 +315,15 @@
   [<iframe>: separate response Content-Type: text/html;x=" text/plain]
     expected: FAIL
 
-  [<iframe>: separate response Content-Type: text/html;" \\" text/plain]
-    expected: FAIL
-
-  [<iframe>: separate response Content-Type: text/plain */*]
-    expected: FAIL
-
-  [<iframe>: combined response Content-Type: */* text/html]
-    expected: FAIL
-
-  [<iframe>: combined response Content-Type: text/html;charset=gbk text/plain text/html]
-    expected: FAIL
-
-  [<iframe>: combined response Content-Type: text/html */*]
-    expected: FAIL
-
-  [<iframe>: combined response Content-Type: text/html */*;charset=gbk]
-    expected: FAIL
-
-  [<iframe>: combined response Content-Type: text/html;x=" text/plain]
-    expected: FAIL
-
   [<iframe>: separate response Content-Type: text/plain */*;charset=gbk]
     expected: FAIL
 
+  [<iframe>: combined response Content-Type: text/html;" text/plain]
+    expected: FAIL
+
+  [<iframe>: separate response Content-Type: text/html;" text/plain]
+    expected: FAIL
+
+  [<iframe>: combined response Content-Type: text/html;" \\" text/plain]
+    expected: FAIL
+

tests/wpt/metadata-layout-2020/fetch/content-type/script.window.js.ini

@@ -56,12 +56,3 @@
   [separate text/javascript x/x]
     expected: FAIL
 
-  [separate text/javascript;charset=windows-1252 error text/javascript]
-    expected: FAIL
-
-  [separate text/javascript;charset=windows-1252  text/javascript]
-    expected: FAIL
-
-  [separate text/javascript error]
-    expected: FAIL
-

tests/wpt/metadata-layout-2020/fetch/nosniff/parsing-nosniff.window.js.ini

@@ -11,6 +11,6 @@
   [X-Content-Type-Options%3A%20nosniff%2C%2C%40%23%24%23%25%25%26%5E%26%5E*()()11!]
     expected: FAIL
 
-  [X-Content-Type-Options%3A%20%2Cnosniff]
+  [X-Content-Type-Options%3A%20%40%23%24%23%25%25%26%5E%26%5E*()()11!%2Cnosniff]
     expected: FAIL
 

tests/wpt/metadata-layout-2020/html/browsers/history/the-history-interface/traverse_the_history_5.html.ini

@@ -1,4 +1,4 @@
-[traverse_the_history_2.html]
+[traverse_the_history_5.html]
   [Multiple history traversals, last would be aborted]
     expected: FAIL
 

tests/wpt/metadata-layout-2020/html/browsers/origin/cross-origin-objects/cross-origin-objects-on-new-window.html.ini

@@ -1,2 +0,0 @@
-[cross-origin-objects-on-new-window.html]
-  expected: TIMEOUT

tests/wpt/metadata-layout-2020/html/browsers/the-window-object/apis-for-creating-and-navigating-browsing-contexts-by-name/creating_browsing_context_test_01.html.ini

@@ -1,4 +1,5 @@
 [creating_browsing_context_test_01.html]
+  expected: TIMEOUT
   [first argument: absolute url]
-    expected: FAIL
+    expected: TIMEOUT
 

tests/wpt/metadata-layout-2020/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_escaping-1.html.ini

@@ -1,5 +1,5 @@
 [iframe_sandbox_popups_escaping-1.html]
-  expected: TIMEOUT
+  expected: CRASH
   [Check that popups from a sandboxed iframe escape the sandbox if\n       allow-popups-to-escape-sandbox is used]
     expected: TIMEOUT
 

tests/wpt/metadata-layout-2020/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_nonescaping-1.html.ini

@@ -1,5 +1,4 @@
 [iframe_sandbox_popups_nonescaping-1.html]
-  expected: CRASH
   [Check that popups from a sandboxed iframe do not escape the sandbox]
-    expected: NOTRUN
+    expected: FAIL
 

tests/wpt/metadata-layout-2020/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_nonescaping-3.html.ini

@@ -1,5 +1,4 @@
 [iframe_sandbox_popups_nonescaping-3.html]
-  expected: TIMEOUT
   [Check that popups from a sandboxed iframe do not escape the sandbox]
-    expected: NOTRUN
+    expected: FAIL
 

tests/wpt/metadata-layout-2020/webaudio/the-audio-api/the-analysernode-interface/realtimeanalyser-fft-scaling.html.ini

@@ -1,5 +1,4 @@
 [realtimeanalyser-fft-scaling.html]
-  expected: TIMEOUT
   [X 2048-point FFT peak position is not equal to 64. Got 0.]
     expected: FAIL
 

tests/wpt/metadata-layout-2020/webmessaging/with-ports/018.html.ini

@@ -0,0 +1,5 @@
+[018.html]
+  expected: TIMEOUT
+  [origin of the script that invoked the method, javascript:]
+    expected: TIMEOUT
+

tests/wpt/metadata/FileAPI/url/url-in-tags-revoke.window.js.ini

@@ -7,7 +7,7 @@
     expected: FAIL
 
   [Opening a blob URL in a new window immediately before revoking it works.]
-    expected: TIMEOUT
+    expected: FAIL
 
   [Opening a blob URL in a noopener about:blank window immediately before revoking it works.]
     expected: TIMEOUT

tests/wpt/metadata/MANIFEST.json

@@ -158374,6 +158374,58 @@
        {}
       ]
      ],
+     "position-absolute-root-element-flex.html": [
+      "ed1e4903d807276246f2e212c6c2dd10d349739a",
+      [
+       null,
+       [
+        [
+         "/css/css-position/position-absolute-root-element-ref.html",
+         "=="
+        ]
+       ],
+       {}
+      ]
+     ],
+     "position-absolute-root-element-grid.html": [
+      "1a813b3a2301f02f833d1b82fd0abb0a91096eab",
+      [
+       null,
+       [
+        [
+         "/css/css-position/position-absolute-root-element-ref.html",
+         "=="
+        ]
+       ],
+       {}
+      ]
+     ],
+     "position-fixed-root-element-flex.html": [
+      "69c95da519b01acc1cd0b8a2f5a33bdf2bbd05fe",
+      [
+       null,
+       [
+        [
+         "/css/css-position/position-fixed-root-element-ref.html",
+         "=="
+        ]
+       ],
+       {}
+      ]
+     ],
+     "position-fixed-root-element-grid.html": [
+      "4deebf405c8282c6539925994d709d388c688ae5",
+      [
+       null,
+       [
+        [
+         "/css/css-position/position-fixed-root-element-ref.html",
+         "=="
+        ]
+       ],
+       {}
+      ]
+     ],
      "position-relative-table-tbody-left-absolute-child.html": [
       "98e759a8c0a83817b3d691503e807ed5ed549936",
       [
@@ -236166,6 +236218,19 @@
         {}
        ]
       ],
+      "mathcolor-mathbackground-css.html": [
+       "8dfc58fe1c4166ae20a2011e86aafd4018b8a319",
+       [
+        null,
+        [
+         [
+          "/mathml/relations/css-styling/mathcolor-mathbackground-css-ref.html",
+          "=="
+         ]
+        ],
+        {}
+       ]
+      ],
       "mathsize-attribute-css-keywords.html": [
        "84c31d743c930d93cbd6993bddb18f1c5d295f33",
        [
@@ -300346,6 +300411,14 @@
       "12e109bd0b2be3d7cef2717306900426db7a23fc",
       []
      ],
+     "position-absolute-root-element-ref.html": [
+      "d4649f2d5abc240f09551cc9efebfa2029406101",
+      []
+     ],
+     "position-fixed-root-element-ref.html": [
+      "96dfe200fb0dbae31906305e1536cf32f4d96c09",
+      []
+     ],
      "position-relative-table-left-ref.html": [
       "7c1193b80007d8e7f89b35400a6d2ea2266cb3ac",
       []
@@ -334531,6 +334604,10 @@
        "67a45249e5264989bb3bda142ff32df43c75222d",
        []
       ],
+      "mathcolor-mathbackground-css-ref.html": [
+       "682fa64233089f3f30ca4a3c00510b2b7e6e56a2",
+       []
+      ],
       "mathsize-attribute-css-keywords-ref.html": [
        "ebb12a6c6c6789efefdcd313da0700584c352f68",
        []
@@ -467679,6 +467756,13 @@
         {}
        ]
       ],
+      "mo-minsize-maxsize-001.html": [
+       "a6dd58b9c116505bc753ad25309943d8803541bb",
+       [
+        null,
+        {}
+       ]
+      ],
       "mo-stretch-properties-dynamic-001.html": [
        "daefd1f2b8ace97d0a8be92a44fa7408d787c980",
        [

tests/wpt/metadata/css/CSS2/floats/hit-test-floats-002.html.ini

@@ -0,0 +1,4 @@
+[hit-test-floats-002.html]
+  [Hit test float]
+    expected: FAIL
+

tests/wpt/metadata/css/CSS2/floats/hit-test-floats-003.html.ini

@@ -0,0 +1,4 @@
+[hit-test-floats-003.html]
+  [Miss float below something else]
+    expected: FAIL
+

tests/wpt/metadata/css/CSS2/floats/hit-test-floats-004.html.ini

@@ -0,0 +1,4 @@
+[hit-test-floats-004.html]
+  [Miss float below something else]
+    expected: FAIL
+

tests/wpt/metadata/css/cssom-view/MediaQueryList-addListener-removeListener.html.ini

@@ -2,6 +2,3 @@
   [listeners are called when <iframe> is resized]
     expected: FAIL
 
-  [listeners are called correct number of times]
-    expected: FAIL
-

tests/wpt/metadata/css/cssom-view/elementsFromPoint-invalid-cases.html.ini

@@ -0,0 +1,4 @@
+[elementsFromPoint-invalid-cases.html]
+  [The root element is the last element returned for otherwise empty queries within the viewport]
+    expected: FAIL
+

tests/wpt/metadata/fetch/content-type/response.window.js.ini

@@ -315,27 +315,15 @@
   [<iframe>: separate response Content-Type: text/html;x=" text/plain]
     expected: FAIL
 
-  [<iframe>: separate response Content-Type: text/html;" \\" text/plain]
-    expected: FAIL
-
-  [<iframe>: separate response Content-Type: text/plain */*]
-    expected: FAIL
-
-  [<iframe>: combined response Content-Type: */* text/html]
-    expected: FAIL
-
-  [<iframe>: combined response Content-Type: text/html;charset=gbk text/plain text/html]
-    expected: FAIL
-
-  [<iframe>: combined response Content-Type: text/html */*]
-    expected: FAIL
-
-  [<iframe>: combined response Content-Type: text/html */*;charset=gbk]
-    expected: FAIL
-
-  [<iframe>: combined response Content-Type: text/html;x=" text/plain]
-    expected: FAIL
-
   [<iframe>: separate response Content-Type: text/plain */*;charset=gbk]
     expected: FAIL
 
+  [<iframe>: combined response Content-Type: text/html;" text/plain]
+    expected: FAIL
+
+  [<iframe>: separate response Content-Type: text/html;" text/plain]
+    expected: FAIL
+
+  [<iframe>: combined response Content-Type: text/html;" \\" text/plain]
+    expected: FAIL
+

tests/wpt/metadata/fetch/content-type/script.window.js.ini

@@ -56,12 +56,3 @@
   [separate text/javascript x/x]
     expected: FAIL
 
-  [separate text/javascript;charset=windows-1252 error text/javascript]
-    expected: FAIL
-
-  [separate text/javascript;charset=windows-1252  text/javascript]
-    expected: FAIL
-
-  [separate text/javascript error]
-    expected: FAIL
-

tests/wpt/metadata/fetch/nosniff/parsing-nosniff.window.js.ini

@@ -11,6 +11,6 @@
   [X-Content-Type-Options%3A%20nosniff%2C%2C%40%23%24%23%25%25%26%5E%26%5E*()()11!]
     expected: FAIL
 
-  [X-Content-Type-Options%3A%20%2Cnosniff]
+  [X-Content-Type-Options%3A%20%40%23%24%23%25%25%26%5E%26%5E*()()11!%2Cnosniff]
     expected: FAIL
 

tests/wpt/metadata/html/browsers/history/the-history-interface/traverse_the_history_5.html.ini

@@ -1,4 +1,4 @@
-[traverse_the_history_2.html]
+[traverse_the_history_5.html]
   [Multiple history traversals, last would be aborted]
     expected: FAIL
 

tests/wpt/metadata/html/browsers/origin/cross-origin-objects/cross-origin-objects-on-new-window.html.ini

@@ -1,2 +0,0 @@
-[cross-origin-objects-on-new-window.html]
-  expected: TIMEOUT

tests/wpt/metadata/html/browsers/the-window-object/apis-for-creating-and-navigating-browsing-contexts-by-name/creating_browsing_context_test_01.html.ini

@@ -1,4 +1,5 @@
 [creating_browsing_context_test_01.html]
+  expected: TIMEOUT
   [first argument: absolute url]
-    expected: FAIL
+    expected: TIMEOUT
 

tests/wpt/metadata/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_escaping-1.html.ini

@@ -1,6 +1,6 @@
 [iframe_sandbox_popups_escaping-1.html]
   type: testharness
-  expected: TIMEOUT
+  expected: CRASH
   [Check that popups from a sandboxed iframe escape the sandbox if\n       allow-popups-to-escape-sandbox is used]
     expected: TIMEOUT
 

tests/wpt/metadata/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_nonescaping-1.html.ini

@@ -1,6 +1,5 @@
 [iframe_sandbox_popups_nonescaping-1.html]
   type: testharness
-  expected: CRASH
   [Check that popups from a sandboxed iframe do not escape the sandbox]
-    expected: NOTRUN
+    expected: FAIL
 

tests/wpt/metadata/html/semantics/embedded-content/the-iframe-element/iframe_sandbox_popups_nonescaping-3.html.ini

@@ -1,6 +1,5 @@
 [iframe_sandbox_popups_nonescaping-3.html]
   type: testharness
-  expected: TIMEOUT
   [Check that popups from a sandboxed iframe do not escape the sandbox]
-    expected: NOTRUN
+    expected: FAIL
 

tests/wpt/metadata/html/semantics/forms/form-submission-0/form-double-submit-2.html.ini

@@ -1,4 +0,0 @@
-[form-double-submit-2.html]
-  [preventDefault should allow onclick submit() to succeed]
-    expected: FAIL
-

tests/wpt/metadata/webaudio/the-audio-api/the-analysernode-interface/realtimeanalyser-fft-scaling.html.ini

@@ -1,5 +1,4 @@
 [realtimeanalyser-fft-scaling.html]
-  expected: TIMEOUT
   [X 2048-point FFT peak position is not equal to 64. Got 0.]
     expected: FAIL
 

tests/wpt/metadata/webmessaging/with-ports/018.html.ini

@@ -0,0 +1,5 @@
+[018.html]
+  expected: TIMEOUT
+  [origin of the script that invoked the method, javascript:]
+    expected: TIMEOUT
+

tests/wpt/web-platform-tests/css/css-position/position-absolute-root-element-flex.html

@@ -0,0 +1,30 @@
+<!DOCTYPE html>
+<html>
+  <meta charset="UTF-8">
+  <title>CSS Position: Box inset properties & position:absolute flex container as the root element</title>
+  <link rel="author" title="Daniel Holbert" href="mailto:dholbert@mozilla.com"/>
+  <link rel="author" title="Ting-Yu Lin" href="mailto:tlin@mozilla.com">
+  <link rel="author" title="Mozilla" href="http://www.mozilla.org/">
+  <link rel="help" href="https://drafts.csswg.org/css-position-3/#insets">
+  <link rel="help" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1584890">
+  <link rel="match" href="position-absolute-root-element-ref.html">
+  <meta name="assert" content="This test verifies the box inset properties on a position:absolute flex container root element.">
+
+  <style>
+  html {
+    display: flex;
+    position: absolute;
+    left: 10px;
+    right: 20px;
+    top: 30px;
+    bottom: 40px;
+    border: 5px dashed black;
+    box-sizing: border-box;
+  }
+  </style>
+
+  The black border should encompass the whole viewport,
+  with a bit of space on each side.
+  <br><br>
+  It shouldn't just shrinkwrap this text's height.
+</html>

tests/wpt/web-platform-tests/css/css-position/position-absolute-root-element-grid.html

@@ -0,0 +1,30 @@
+<!DOCTYPE html>
+<html>
+  <meta charset="UTF-8">
+  <title>CSS Position: Box inset properties & position:absolute grid container as the root element</title>
+  <link rel="author" title="Daniel Holbert" href="mailto:dholbert@mozilla.com"/>
+  <link rel="author" title="Ting-Yu Lin" href="mailto:tlin@mozilla.com">
+  <link rel="author" title="Mozilla" href="http://www.mozilla.org/">
+  <link rel="help" href="https://drafts.csswg.org/css-position-3/#insets">
+  <link rel="help" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1584890">
+  <link rel="match" href="position-absolute-root-element-ref.html">
+  <meta name="assert" content="This test verifies the box inset properties on a position:absolute grid container root element.">
+
+  <style>
+  html {
+    display: grid;
+    position: absolute;
+    left: 10px;
+    right: 20px;
+    top: 30px;
+    bottom: 40px;
+    border: 5px dashed black;
+    box-sizing: border-box;
+  }
+  </style>
+
+  The black border should encompass the whole viewport,
+  with a bit of space on each side.
+  <br><br>
+  It shouldn't just shrinkwrap this text's height.
+</html>

tests/wpt/web-platform-tests/css/css-position/position-absolute-root-element-ref.html

@@ -0,0 +1,26 @@
+<!DOCTYPE html>
+<html>
+  <meta charset="UTF-8">
+  <title>CSS Position Reference: Box inset properties & position:absolute root element</title>
+  <link rel="author" title="Daniel Holbert" href="mailto:dholbert@mozilla.com"/>
+  <link rel="author" title="Ting-Yu Lin" href="mailto:tlin@mozilla.com">
+  <link rel="author" title="Mozilla" href="http://www.mozilla.org/">
+
+  <style>
+  html {
+    display: block;
+    position: absolute;
+    left: 10px;
+    right: 20px;
+    top: 30px;
+    bottom: 40px;
+    border: 5px dashed black;
+    box-sizing: border-box;
+  }
+  </style>
+
+  The black border should encompass the whole viewport,
+  with a bit of space on each side.
+  <br><br>
+  It shouldn't just shrinkwrap this text's height.
+</html>

tests/wpt/web-platform-tests/css/css-position/position-fixed-root-element-flex.html

@@ -0,0 +1,30 @@
+<!DOCTYPE html>
+<html>
+  <meta charset="UTF-8">
+  <title>CSS Position: Box inset properties & position:fixed flex container as the root element</title>
+  <link rel="author" title="Daniel Holbert" href="mailto:dholbert@mozilla.com"/>
+  <link rel="author" title="Ting-Yu Lin" href="mailto:tlin@mozilla.com">
+  <link rel="author" title="Mozilla" href="http://www.mozilla.org/">
+  <link rel="help" href="https://drafts.csswg.org/css-position-3/#insets">
+  <link rel="help" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1584890">
+  <link rel="match" href="position-fixed-root-element-ref.html">
+  <meta name="assert" content="This test verifies the box inset properties on a position:fixed flex container root element.">
+
+  <style>
+  html {
+    display: flex;
+    position: fixed;
+    left: 10px;
+    right: 20px;
+    top: 30px;
+    bottom: 40px;
+    border: 5px dashed black;
+    box-sizing: border-box;
+  }
+  </style>
+
+  The black border should encompass the whole viewport,
+  with a bit of space on each side.
+  <br><br>
+  It shouldn't just shrinkwrap this text's height.
+</html>

tests/wpt/web-platform-tests/css/css-position/position-fixed-root-element-grid.html

@@ -0,0 +1,30 @@
+<!DOCTYPE html>
+<html>
+  <meta charset="UTF-8">
+  <title>CSS Position: Box inset properties & position:fixed grid container as the root element</title>
+  <link rel="author" title="Daniel Holbert" href="mailto:dholbert@mozilla.com"/>
+  <link rel="author" title="Ting-Yu Lin" href="mailto:tlin@mozilla.com">
+  <link rel="author" title="Mozilla" href="http://www.mozilla.org/">
+  <link rel="help" href="https://drafts.csswg.org/css-position-3/#insets">
+  <link rel="help" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1584890">
+  <link rel="match" href="position-fixed-root-element-ref.html">
+  <meta name="assert" content="This test verifies the box inset properties on a position:fixed grid container root element.">
+
+  <style>
+  html {
+    display: grid;
+    position: fixed;
+    left: 10px;
+    right: 20px;
+    top: 30px;
+    bottom: 40px;
+    border: 5px dashed black;
+    box-sizing: border-box;
+  }
+  </style>
+
+  The black border should encompass the whole viewport,
+  with a bit of space on each side.
+  <br><br>
+  It shouldn't just shrinkwrap this text's height.
+</html>

tests/wpt/web-platform-tests/css/css-position/position-fixed-root-element-ref.html

@@ -0,0 +1,26 @@
+<!DOCTYPE html>
+<html>
+  <meta charset="UTF-8">
+  <title>CSS Position Reference: Box inset properties & position:fixed root element</title>
+  <link rel="author" title="Daniel Holbert" href="mailto:dholbert@mozilla.com"/>
+  <link rel="author" title="Ting-Yu Lin" href="mailto:tlin@mozilla.com">
+  <link rel="author" title="Mozilla" href="http://www.mozilla.org/">
+
+  <style>
+  html {
+    display: block;
+    position: fixed;
+    left: 10px;
+    right: 20px;
+    top: 30px;
+    bottom: 40px;
+    border: 5px dashed black;
+    box-sizing: border-box;
+  }
+  </style>
+
+  The black border should encompass the whole viewport,
+  with a bit of space on each side.
+  <br><br>
+  It shouldn't just shrinkwrap this text's height.
+</html>

tests/wpt/web-platform-tests/mathml/presentation-markup/operators/mo-minsize-maxsize-001.html

@@ -0,0 +1,89 @@
+<!DOCTYPE html>
+<html>
+<head>
+<meta charset="utf-8">
+<title>Edge cases for minsize and maxsize</title>
+<link rel="stylesheet" type="text/css" href="/fonts/ahem.css" />
+<link rel="help" href="https://mathml-refresh.github.io/mathml-core/#dictionary-based-attributes">
+<meta name="assert" content="Verify edge cases for minsize and maxsize .">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<style>
+  math {
+      font: 25px/1 Ahem;
+  }
+  @font-face {
+      font-family: operators;
+      src: url("/fonts/math/operators.woff");
+  }
+  mo {
+      font-family: operators;
+  }
+</style>
+<script>
+  setup({ explicit_done: true });
+  window.addEventListener("load", () => { document.fonts.ready.then(runTests); });
+
+  function runTests() {
+      var epsilon = 1;
+      var emToPx = 25;
+      test(function() {
+          assert_approx_equals(document.getElementById("negative_minsize").getBoundingClientRect().height, 5 * emToPx, epsilon);
+      }, `minsize < 0 is treated as 0`);
+
+      test(function() {
+          assert_approx_equals(document.getElementById("maxsize_less_than_minsize").getBoundingClientRect().height, 7 * emToPx, epsilon);
+      }, `maxsize < minsize is treated as maxsize = minsize`);
+
+      test(function() {
+          assert_less_than(document.getElementById("minsize_less_than_negative_maxsize").getBoundingClientRect().height, 2 * emToPx);
+      }, `minsize < maxsize < 0 is treated as maxsize = minsize = 0`);
+
+      test(function() {
+          assert_approx_equals(document.getElementById("zero_target_size_with_minsize").getBoundingClientRect().height, 4 * emToPx, epsilon);
+      }, `target size = 0 is treated as Tascent = Tdescent = minsize/2`);
+
+      done();
+  }
+</script>
+</head>
+<body>
+  <div id="log"></div>
+  <p>
+    <math>
+      <mrow>
+        <mspace width="1em" height="5em" style="background: blue"/>
+        <mo id="negative_minsize" minsize="-10em" stretchy="true" symmetric="false">⥯</mo>
+        <mn><!-- not space like --></mn>
+      </mrow>
+    </math>
+  </p>
+  <p>
+    <math>
+      <mrow>
+        <mspace width="1em" height="5em" style="background: blue"/>
+        <mo id="maxsize_less_than_minsize" minsize="7em" maxsize="2em" stretchy="true" symmetric="false">⥯</mo>
+        <mn><!-- not space like --></mn>
+      </mrow>
+    </math>
+  </p>
+  <p>
+    <math>
+      <mrow>
+        <mspace width="1em" height="5em" style="background: blue"/>
+        <mo id="minsize_less_than_negative_maxsize" minsize="-2em" maxsize="-1em" stretchy="true" symmetric="false">⥯</mo>
+        <mn><!-- not space like --></mn>
+      </mrow>
+    </math>
+  </p>
+  <p>
+    <math>
+      <mrow>
+        <mspace width="1em" height="0em" style="background: blue"/>
+        <mo id="zero_target_size_with_minsize" minsize="2em" stretchy="true" symmetric="true">⥯</mo>
+        <mn><!-- not space like --></mn>
+      </mrow>
+    </math>
+  </p>
+</body>
+</html>

tests/wpt/web-platform-tests/mathml/relations/css-styling/mathcolor-mathbackground-css-ref.html

@@ -0,0 +1,23 @@
+<!DOCTYPE html>
+<html>
+<head>
+<meta charset="utf-8">
+<title>CSS color (reference)</title>
+<link rel="stylesheet" href="/fonts/ahem.css">
+<style>
+  math  {
+    font-family: Ahem;
+    font-size: 20px;
+  }
+</style>
+</style>
+</head>
+<body>
+  <p>Test passes if you see a green rectangle:</p>
+  <p>
+    <math mathbackground="#0f0" mathcolor="#0f0">
+      <mtext>X X</mtext>
+    </math>
+  </p>
+</body>
+</html>

tests/wpt/web-platform-tests/mathml/relations/css-styling/mathcolor-mathbackground-css.html

@@ -0,0 +1,27 @@
+<!DOCTYPE html>
+<html>
+<head>
+<meta charset="utf-8">
+<title>CSS color</title>
+<link rel="help" href="https://mathml-refresh.github.io/mathml-core/#types-for-mathml-attribute-values">
+<link rel="help" href="https://mathml-refresh.github.io/mathml-core/#legacy-mathml-style-attributes">
+<link rel="match" href="mathcolor-mathbackground-css-ref.html"/>
+<link rel="stylesheet" href="/fonts/ahem.css">
+<meta name="assert" content="Verify that the mathcolor and mathbackground attributes use the CSS definition of colors.">
+<style>
+  math  {
+    font-family: Ahem;
+    font-size: 20px;
+  }
+</style>
+</style>
+</head>
+<body>
+  <p>Test passes if you see a green rectangle:</p>
+  <p style="color: red">
+    <math mathbackground="rgb(0,255,0)" mathcolor="rgb(0,255,0)">
+      <mtext>X X</mtext>
+    </math>
+  </p>
+</body>
+</html>