<!DOCTYPE html>
<meta charset="UTF-8">
<title>border-color interpolation</title>
<link rel="help" href="https://drafts.csswg.org/css-backgrounds-3/#border-color">
<meta name="assert" content="border-color 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>

<style>
.parent {
  border-color: white;
}
.target {
  width: 50px;
  height: 50px;
  background-color: blue;
  display: inline-block;
  border: 12px solid;
  border-color: darkblue;
}
.expected {
  background-color: green;
  margin-right: 2px;
}
</style>

<body></body>

<script>
// As per https://bugzilla.mozilla.org/show_bug.cgi?id=137688, Firefox does not
// support getComputedStyle for shorthands. As such, we have one test for this
// which explicitly checks the shorthand variant, but most tests use one of the
// longhands instead.
function compareNotEmpty(actual, expected) {
  assert_equals(actual, expected);
  assert_not_equals(actual, '');
}

test_interpolation({
  property: 'border-color',
  from: 'rgb(20, 30, 40) rgb(40, 50, 60)',
  to: 'rgb(10, 20, 30) rgb(40, 50, 60) rgb(30, 40, 50) rgb(50, 60, 70)',
  comparisonFunction: compareNotEmpty,
}, [
  {at: -0.3, expect: 'rgb(23, 33, 43) rgb(40, 50, 60) rgb(17, 27, 37) rgb(37, 47, 57)'},
  {at: 0, expect: 'rgb(20, 30, 40) rgb(40, 50, 60)'},
  {at: 0.3, expect: 'rgb(17, 27, 37) rgb(40, 50, 60) rgb(23, 33, 43) rgb(43, 53, 63)'},
  {at: 0.6, expect: 'rgb(14, 24, 34) rgb(40, 50, 60) rgb(26, 36, 46) rgb(46, 56, 66)'},
  {at: 1, expect: 'rgb(10, 20, 30) rgb(40, 50, 60) rgb(30, 40, 50) rgb(50, 60, 70)'},
  {at: 1.5, expect: 'rgb(5, 15, 25) rgb(40, 50, 60) rgb(35, 45, 55) rgb(55, 65, 75)'},
]);

test_interpolation({
  property: 'border-top-color',
  from: neutralKeyframe,
  to: 'orange',
}, [
  {at: -0.3, expect: 'rgb(0, 0, 181)'},
  {at: 0, expect: 'rgb(0, 0, 139)'},
  {at: 0.3, expect: 'rgb(77, 50, 97)'},
  {at: 0.6, expect: 'rgb(153, 99, 56)'},
  {at: 1, expect: 'rgb(255, 165, 0)'},
  {at: 1.5, expect: 'rgb(255, 248, 0)'},
]);

test_interpolation({
  property: 'border-top-color',
  from: 'initial',
  to: 'orange',
}, [
  {at: -0.3, expect: 'rgb(0, 0, 0)'},
  {at: 0, expect: 'rgb(0, 0, 0)'},
  {at: 0.3, expect: 'rgb(77, 50, 0)'},
  {at: 0.6, expect: 'rgb(153, 99, 0)'},
  {at: 1, expect: 'rgb(255, 165, 0)'},
  {at: 1.5, expect: 'rgb(255, 248, 0)'},
]);

test_interpolation({
  property: 'border-top-color',
  from: 'inherit',
  to: 'orange',
}, [
  {at: -0.3, expect: 'rgb(255, 255, 255)'},
  {at: 0, expect: 'rgb(255, 255, 255)'},
  {at: 0.3, expect: 'rgb(255, 228, 179)'},
  {at: 0.6, expect: 'rgb(255, 201, 102)'},
  {at: 1, expect: 'rgb(255, 165, 0)'},
  {at: 1.5, expect: 'rgb(255, 120, 0)'},
]);

test_interpolation({
  property: 'border-top-color',
  from: 'unset',
  to: 'orange',
}, [
  {at: -0.3, expect: 'rgb(0, 0, 0)'},
  {at: 0, expect: 'rgb(0, 0, 0)'},
  {at: 0.3, expect: 'rgb(77, 50, 0)'},
  {at: 0.6, expect: 'rgb(153, 99, 0)'},
  {at: 1, expect: 'rgb(255, 165, 0)'},
  {at: 1.5, expect: 'rgb(255, 248, 0)'},
]);

test_interpolation({
  property: 'border-top-color',
  from: 'white',
  to: 'orange'
}, [
  {at: -0.3, expect: 'white'},
  {at: 0, expect: 'white'},
  {at: 0.3, expect: 'rgb(255, 228, 179)'},
  {at: 0.6, expect: 'rgb(255, 201, 102)'},
  {at: 1, expect: 'orange'},
  {at: 1.5, expect: 'rgb(255, 120, 0)'},
]);

</script>
