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<!DOCTYPE html>
<meta charset="UTF-8">
<title>row-gap interpolation</title>
<link rel="help" href="https://drafts.csswg.org/css-align-3/#propdef-row-gap">
<meta name="assert" content="row-gap supports animation by computed value type">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/css/support/interpolation-testcommon.js"></script>
<style>
.parent {
row-gap: 90px;
}
.target {
row-gap: 10px;
}
.expected div {
opacity: 0.7;
}
.target > div {
height: 20px;
background-color: black;
}
.target.expected > div {
background-color: green;
}
</style>
<body>
<template id='target-template'>
<div></div><div></div>
</template>
</body>
<script>
test_interpolation({
property: 'row-gap',
from: neutralKeyframe,
to: '40px',
}, [
{at: -0.3, expect: '1px'},
{at: 0, expect: '10px'},
{at: 0.3, expect: '19px'},
{at: 0.6, expect: '28px'},
{at: 1, expect: '40px'},
{at: 1.5, expect: '55px'},
]);
test_no_interpolation({
property: 'row-gap',
from: 'initial',
to: '20px',
});
test_interpolation({
property: 'row-gap',
from: 'inherit',
to: '20px',
}, [
{at: -0.3, expect: '111px'},
{at: 0, expect: '90px'},
{at: 0.3, expect: '69px'},
{at: 0.6, expect: '48px'},
{at: 1, expect: '20px'},
{at: 1.5, expect: '0px'},
]);
test_no_interpolation({
property: 'row-gap',
from: 'unset',
to: '20px',
});
test_no_interpolation({
property: 'row-gap',
from: 'normal',
to: '20px',
});
test_interpolation({
property: 'row-gap',
from: '0px',
to: '100px'
}, [
{at: -0.3, expect: '0'}, // row-gap can't be negative.
{at: 0, expect: '0'},
{at: 0.3, expect: '30px'},
{at: 0.6, expect: '60px'},
{at: 1, expect: '100px'},
{at: 1.5, expect: '150px'}
]);
</script>
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