<!DOCTYPE html>
<meta charset="UTF-8">
<title>contain-intrinsic-size interpolation</title>
<link rel="help" href="https://drafts.csswg.org/css-sizing-4/#intrinsic-size-override">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/css/support/interpolation-testcommon.js"></script>

<style>
.target {
  contain: strict;
  contain-intrinsic-size: 50px 60px;
}
</style>

<body></body>

<script>
// none doesn't interpolate
test_interpolation({
  property: 'contain-intrinsic-size',
  from: neutralKeyframe,
  to: '20px 10px',
}, [
  {at: -0.3, expect: '59px 75px'},
  {at: 0, expect: '50px 60px'},
  {at: 0.3, expect: '41px 45px'},
  {at: 0.6, expect: '32px 30px'},
  {at: 1, expect: '20px 10px'},
  {at: 1.5, expect: '5px 0px'}
]);

test_no_interpolation({
  property: 'contain-intrinsic-size',
  from: 'initial',
  to: '20px 20px',
});

test_no_interpolation({
  property: 'contain-intrinsic-size',
  from: 'inherit',
  to: '20px',
});

test_no_interpolation({
  property: 'contain-intrinsic-size',
  from: 'unset',
  to: '20px',
});

test_no_interpolation({
  property: 'contain-intrinsic-size',
  from: 'none',
  to: '20px 20px',
});

test_no_interpolation({
  property: 'contain-intrinsic-size',
  from: '10px 15px',
  to: 'none',
});

test_interpolation({
  property: 'contain-intrinsic-size',
  from: 'auto 0px 0px',
  to: 'auto 10px 10px'
}, [
  {at: -0.3, expect: 'auto 0px 0px'}, // contain-intrinsic-size can't be negative.
  {at: 0, expect: 'auto 0px 0px'},
  {at: 0.3, expect: 'auto 3px 3px'},
  {at: 0.6, expect: 'auto 6px 6px'},
  {at: 1, expect: 'auto 10px 10px'},
  {at: 1.5, expect: 'auto 15px 15px'}
]);

test_no_interpolation({
  property: 'contain-intrinsic-size',
  from: 'auto 10px 15px',
  to: '20px 15px',
});

test_no_interpolation({
  property: 'contain-intrinsic-size',
  from: 'none 15px',
  to: '20px 15px',
});

test_no_interpolation({
  property: 'contain-intrinsic-size',
  from: 'none 15px',
  to: 'auto 20px 15px',
});

test_interpolation({
  property: 'contain-intrinsic-size',
  from: '0px 0px',
  to: '10px'
}, [
  {at: -0.3, expect: '0px 0px'}, // contain-intrinsic-size can't be negative.
  {at: 0, expect: '0px 0px'},
  {at: 0.3, expect: '3px 3px'},
  {at: 0.6, expect: '6px 6px'},
  {at: 1, expect: '10px 10px'},
  {at: 1.5, expect: '15px 15px'}
]);

test_interpolation({
  property: 'contain-intrinsic-size',
  from: '20px 40px',
  to: '30px 50px'
}, [
  {at: -0.3, expect: '17px 37px'},
  {at: 0, expect: '20px 40px'},
  {at: 0.3, expect: '23px 43px'},
  {at: 0.6, expect: '26px 46px'},
  {at: 1, expect: '30px 50px'},
  {at: 1.5, expect: '35px 55px'}
]);
</script>
