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<!DOCTYPE html>
<meta charset="UTF-8">
<title>height interpolation</title>
<link rel="help" href="https://drafts.csswg.org/css-sizing-3/#propdef-height">
<meta name="assert" content="height 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 {
height: 200px;
}
.target {
width: 100px;
height: 100px;
background-color: black;
display: inline-block;
margin-right: 5px;
height: 10px;
}
.expected {
background-color: green;
}
</style>
<body></body>
<script>
test_interpolation({
property: 'height',
from: neutralKeyframe,
to: '20px',
}, [
{at: -0.3, expect: '7px'},
{at: 0, expect: '10px'},
{at: 0.3, expect: '13px'},
{at: 0.6, expect: '16px'},
{at: 1, expect: '20px'},
{at: 1.5, expect: '25px'},
]);
test_no_interpolation({
property: 'height',
from: 'initial',
to: '20px',
});
test_interpolation({
property: 'height',
from: 'inherit',
to: '20px',
}, [
{at: -0.3, expect: '254px'},
{at: 0, expect: '200px'},
{at: 0.3, expect: '146px'},
{at: 0.6, expect: '92px'},
{at: 1, expect: '20px'},
{at: 1.5, expect: '0px'},
]);
test_no_interpolation({
property: 'height',
from: 'unset',
to: '20px',
});
test_no_interpolation({
property: 'height',
from: 'auto',
to: '20px',
});
test_interpolation({
property: 'height',
from: '0px',
to: '100px',
}, [
{at: -0.3, expect: '0px'}, // CSS height can't be negative.
{at: 0, expect: '0px'},
{at: 0.3, expect: '30px'},
{at: 0.6, expect: '60px'},
{at: 1, expect: '100px'},
{at: 1.5, expect: '150px'}
]);
test_no_interpolation({
property: 'height',
from: 'auto',
to: 'min-content',
});
test_no_interpolation({
property: 'height',
from: 'fit-content',
to: '20px',
});
test_no_interpolation({
property: 'height',
from: 'max-content',
to: 'fit-content',
});
test_no_interpolation({
property: 'height',
from: 'max-content',
to: 'stretch',
});
test_no_interpolation({
property: 'height',
from: 'max-content',
to: neutralKeyframe,
});
test_no_interpolation({
property: 'height',
from: neutralKeyframe,
to: 'fit-content',
});
let new_style_text = `
.target {
height: auto;
}
`;
let new_style = document.createElement("style");
new_style.append(new_style_text);
document.head.append(new_style);
test_no_interpolation({
property: 'height',
from: neutralKeyframe,
to: '100px',
});
new_style.remove();
</script>
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