File: logical-shorthand-relative-prioritization-by-number-of-components.tentative.html

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<!doctype html>
<meta charset=utf-8>
<title>Logical shorthands follow the usual prioritization based on number of component longhands</title>
<link rel="help" href="https://drafts.csswg.org/web-animations-1/#calculating-computed-keyframes">
<meta name="assert" content="Shorthand properties with fewer longhand components override those with more longhand components (e.g. border-top overrides border-color).">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="../../css-animations/support/testcommon.js"></script>

<div id="log"></div>
<script>
'use strict';

test(t => {
  const div = addDiv(t);
  const anim = div.animate(
    {
      marginInlineStart: '100px',
      marginInline: '200px',
      margin: 'logical 300px',
    },
    { duration: 1, easing: 'step-start' }
  );
  assert_equals(getComputedStyle(div).marginLeft, '100px');
  assert_equals(getComputedStyle(div).marginRight, '200px');
  assert_equals(getComputedStyle(div).marginTop, '300px');
  assert_equals(getComputedStyle(div).marginBottom, '300px');
}, 'Logical shorthands follow the usual prioritization based on number of'
   + ' component longhands');

</script>