chromium/third_party/blink/web_tests/external/wpt/css/css-typed-om/stylevalue-serialization/cssStyleValue-cssom.html

<!doctype html>
<meta charset="utf-8">
<title>CSSStyleValue serialization from CSSOM</title>
<link rel="help" href="https://drafts.css-houdini.org/css-typed-om-1/#stylevalue-serialization">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="../resources/testhelper.js"></script>
<body>
<div id="log"></div>
<script>
'use strict';

test(t => {
  const result = createInlineStyleMap(t, 'color: red').get('color');
  assert_equals(result.toString(), 'red');
}, 'CSSStyleValue from specified CSSOM serializes correctly');

test(t => {
  const result = createComputedStyleMap(t, 'color: red').get('color');
  assert_equals(result.toString(), 'rgb(255, 0, 0)');
}, 'CSSStyleValue from computed CSSOM serializes correctly');

test(t => {
  const result = createInlineStyleMap(t, 'background: blue').get('background');
  assert_equals(result.toString(), 'blue');
}, 'Shorthand CSSStyleValue from inline CSSOM serializes correctly');

test(t => {
  const result = createComputedStyleMap(t, 'background: blue').get('background');
  assert_equals(result.toString(), 'rgb(0, 0, 255) none repeat scroll 0% 0% / auto padding-box border-box');
}, 'Shorthand CSSStyleValue from computed CSSOM serializes correctly');

</script>