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Test Info: Warnings
- This test has a WPT meta file that expects 1 subtest issues.
- This WPT test may be referenced by the following Test IDs:
- /scroll-animations/css/view-timeline-pseudo-on-scroller.html - WPT Dashboard Interop Dashboard
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>Animating pseduo-element on scroller</title>
</head>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/web-animations/testcommon.js"></script>
<script src="./support/testcommon.js"></script>
<script src="testcommon.js"></script>
<style type="text/css">
.scroller {
overflow: scroll;
width: 100px;
height: 100px;
margin: 1em;
outline: 1px solid;
}
.pseudo::before {
content: "";
display: inline;
width: 100px;
height: 50px;
background: red;
animation: bg linear;
animation-timeline: view(inline);
}
.content {
width: 100px;
height: 100px;
background: green;
}
@keyframes bg {
from {
background: rgb(0, 255, 0);
}
to {
background: rgb(0, 0, 255);
}
}
</style>
<body>
<div class="scroller pseudo">
<div class="content"></div>
</div>
<div id="log"></div>
</body>
<script type="text/javascript">
'use strict';
promise_test(async t => {
await waitForCSSScrollTimelineStyle();
const scroller = document.querySelector('.scroller');
assert_equals(getComputedStyle(scroller, ':before').backgroundColor,
'rgb(0, 0, 255)');
}, `view() on pseudo-element attaches to parent scroll container`);
</script>
</html>