wpt/css/css-backgrounds/animations/border-left-width-composition.html at master · web-platform-tests/wpt · GitHub

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<!DOCTYPE html>
<meta charset="UTF-8">
<title>border-left-width composition</title>
<link rel="help" href="https://www.w3.org/TR/CSS2/box.html#border-width-properties">
<meta name="assert" content="border-left-width supports animation by computed value">

<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/css/support/interpolation-testcommon.js"></script>

<body>
<script>
test_composition({
  property: 'border-left-width',
  underlying: '50px',
  addFrom: '100px',
  addTo: '200px',
}, [
  {at: -0.3, expect: '120px'},
  {at: 0, expect: '150px'},
  {at: 0.5, expect: '200px'},
  {at: 1, expect: '250px'},
  {at: 1.5, expect: '300px'},
]);

test_composition({
  property: 'border-left-width',
  underlying: '100px',
  addFrom: '10px',
  addTo: '2px',
}, [
  {at: -0.5, expect: '114px'},
  {at: 0, expect: '110px'},
  {at: 0.5, expect: '106px'},
  {at: 1, expect: '102px'},
  {at: 1.5, expect: '98px'}, // Value clamping should happen after composition.
]);

test_composition({
  property: 'border-left-width',
  underlying: '10em',
  addFrom: '100px',
  addTo: '20em',
}, [
  {at: -0.3, expect: 'calc(130px + 4em)'},
  {at: 0, expect: 'calc(100px + 10em)'},
  {at: 0.5, expect: 'calc(50px + 20em)'},
  {at: 1, expect: '30em'},
  {at: 1.5, expect: 'calc(-50px + 40em)'},
]);

test_composition({
  property: 'border-left-width',
  underlying: '50px',
  addFrom: '100px',
  replaceTo: '200px',
}, [
  {at: -0.3, expect: '135px'},
  {at: 0, expect: '150px'},
  {at: 0.5, expect: '175px'},
  {at: 1, expect: '200px'},
  {at: 1.5, expect: '225px'},
]);
</script>
</body>