wpt/css/css-multicol/animation/columns-interpolation.html at master · web-platform-tests/wpt · GitHub

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<!DOCTYPE html>
<title>columns shorthand interpolation</title>
<link rel="help" href="https://un5n798jx6qx6j0rmf2verhh.julianrbryant.com/css-multicol/#propdef-columns">
<link rel="help" href="https://un5n798jx6qx6j0rmf2verhh.julianrbryant.com/css-multicol-2/#propdef-columns">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/css/support/interpolation-testcommon.js"></script>
<style>
  .parent {
    columns: 50px / 100px;
  }
  .target {
    columns: 200px / 100px;
  }
</style>
<body>
</body>
<script>
test_interpolation({
  property: 'columns',
  from: '200px 10',
  to: '100px 20',
}, [
  {at: -1, expect: '300px 1'},
  {at: -0.5, expect: '250px 5'},
  {at: 0, expect: '200px 10'},
  {at: 0.5, expect: '150px 15'},
  {at: 1, expect: '100px 20'},
]);

test_interpolation({
  property: 'columns',
  from: neutralKeyframe,
  to: '100px / 200px',
}, [
  {at: -1, expect: '300px / 0px'},
  {at: -0.5, expect: '250px / 50px'},
  {at: 0, expect: '200px / 100px'},
  {at: 0.5, expect: '150px / 150px'},
  {at: 1, expect: '100px / 200px'},
]);

test_interpolation({
  property: 'columns',
  from: '1000px / 500px',
  to: '100px / 200px',
}, [
  {at: -1, expect: '1900px / 800px'},
  {at: -0.5, expect: '1450px / 650px'},
  {at: 0, expect: '1000px / 500px'},
  {at: 0.5, expect: '550px / 350px'},
  {at: 1, expect: '100px / 200px'},
]);

test_interpolation({
  property: 'columns',
  from: '10 / 100px',
  to: '20 / 200px',
}, [
  {at: -0.5, expect: '5 / 50px'},
  {at: 0, expect: '10 / 100px'},
  {at: 0.5, expect: '15 / 150px'},
  {at: 1, expect: '20 / 200px'},
]);

test_interpolation({
  property: 'columns',
  from: '10 100px',
  to: '20 200px',
}, [
  {at: -0.5, expect: '5 50px'},
  {at: 0, expect: '10 100px'},
  {at: 0.5, expect: '15 150px'},
  {at: 1, expect: '20 200px'},
]);

test_interpolation({
  property: 'columns',
  from: '10 100px / auto',
  to: '20 200px / auto',
}, [
  {at: -0.5, expect: '5 50px'},
  {at: 0, expect: '10 100px'},
  {at: 0.5, expect: '15 150px'},
  {at: 1, expect: '20 200px'},
]);

test_interpolation({
  property: 'columns',
  from: 'inherit',
  to: '200px / 900px',
}, [
  {at: -0.5, expect: '0px / 0px'},
  {at: -0.2, expect: '20px / 0px'},
  {at: -0.1, expect: '35px / 20px'},
  {at: 0, expect: '50px / 100px'},
  {at: 0.5, expect: '125px / 500px'},
  {at: 1, expect: '200px / 900px'},
]);

test_no_interpolation({
  property: 'columns',
  from: 'initial',
  to: '100px / 200px',
});

test_no_interpolation({
  property: 'columns',
  from: 'initial',
  to: '100px',
});

test_no_interpolation({
  property: 'columns',
  from: 'initial',
  to: '10',
});

test_no_interpolation({
  property: 'columns',
  from: 'auto',
  to: '100px / 200px',
});

test_no_interpolation({
  property: 'columns',
  from: '100px / 200px',
  to: 'auto',
});

test_no_interpolation({
  property: 'columns',
  from: 'inherit',
  to: 'auto',
});
</script>