<!DOCTYPE html>
<meta charset="UTF-8">
<title>mask-image-interpolation</title>
<link rel="help" href="https://drafts.fxtf.org/css-masking-1/#the-mask-image">
<meta name="assert" content="mask-image supports animation">

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

<style>
.parent {
  mask-image: url(../resources/blue-20.png);
}
.target {
  width: 20px;
  height: 20px;
  display: inline-block;
  background-color: black;
  mask-image: url(../resources/stripes-20.png);
}
.expected {
  background-color: green;
  margin-right: 10px;
}
</style>

<body>
<script>
// neutral
test_no_interpolation({
  property: 'mask-image',
  from: neutralKeyframe,
  to: 'url(../resources/green-20.png)',
});

// initial
test_no_interpolation({
  property: 'mask-image',
  from: 'initial',
  to: 'url(../resources/green-20.png)',
});

// inherit
test_no_interpolation({
  property: 'mask-image',
  from: 'inherit',
  to: 'url(../resources/green-20.png)',
});

// unset
test_no_interpolation({
  property: 'mask-image',
  from: 'unset',
  to: 'url(../resources/stripes-20.png)',
});

// Image to image
test_no_interpolation({
  property: 'mask-image',
  from: 'url(../resources/stripes-20.png)',
  to: 'url(../resources/blue-20.png)',
});

//Image to gradient
test_no_interpolation({
  property: 'mask-image',
  from: 'url(../resources/stripes-20.png)',
  to: 'linear-gradient(45deg, blue, transparent)'
});

// Keyword to image
test_no_interpolation({
  property: 'mask-image',
  from: 'none',
  to: 'url(../resources/green-20.png)',
});

// Multiple to multiple
var fromA = 'url(../resources/stripes-20.png)';
var fromB = 'linear-gradient(-45deg, blue, transparent)';
var toA = 'url(../resources/blue-20.png)';
var toB = 'url(../resources/stripes-20.png)';
var from = fromA + ', ' + fromB;
var to = toA + ', ' + toB;
test_no_interpolation({
  property: 'mask-image',
  from: from,
  to: to,
});

// Single to multiple
from = 'url(../resources/blue-20.png)';
toA = 'url(../resources/stripes-20.png)';
toB = 'url(../resources/blue-20.png)';
to = toA + ', ' + toB;
test_no_interpolation({
  property: 'mask-image',
  from: from,
  to: to,
});

// Multiple mismatched types
test_no_interpolation({
  property: 'mask-image',
  from: 'url(../resources/blue-20.png), none',
  to: 'url(../resources/stripes-20.png), url(../resources/blue-20.png)',
});
</script>
</body>
