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Test Info:
- This WPT test may be referenced by the following Test IDs:
- /css/css-sizing/animation/aspect-ratio-interpolation-sideways-rl.html - WPT Dashboard Interop Dashboard
<!DOCTYPE html>
<meta charset="UTF-8">
<title>aspect-ratio interpolation with writing-mode: sideways-rl</title>
<meta name="assert" content="The computed value of aspect-ratio is physical (width / height) and independent of writing mode, so its interpolation produces the same result in sideways-rl as in horizontal-tb.">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/css/support/interpolation-testcommon.js"></script>
<style>
.target {
font-size: 16px;
background-color: black;
width: 10px;
writing-mode: sideways-rl;
aspect-ratio: 0.5;
}
</style>
<body>
<template id="target-template">
<div class="container">
<div class="target"></div>
</div>
</template>
</body>
<script>
// Regression test: WebKit used to interpolate the writing-mode-relative (logical)
// aspect ratio and store it as the physical value, inverting the result at every
// non-midpoint sample in vertical writing modes. These expectations are identical
// to the horizontal-writing-mode test because the computed value of aspect-ratio
// is physical and writing-mode independent.
test_interpolation({
property: 'aspect-ratio',
from: '0.5',
to: '2',
}, [
{at: -0.5, expect: '0.25 / 1'},
{at: 0, expect: '0.5 / 1'},
{at: 0.5, expect: '1 / 1'},
{at: 1, expect: '2 / 1'},
{at: 1.5, expect: '4 / 1'}
]);
test_interpolation({
property: 'aspect-ratio',
from: '1 / 2',
to: '2 / 1',
}, [
{at: -0.5, expect: '0.25 / 1'},
{at: 0, expect: '0.5 / 1'},
{at: 0.5, expect: '1 / 1'},
{at: 1, expect: '2 / 1'},
{at: 1.5, expect: '4 / 1'}
]);
</script>
</body>