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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/view-timelines/view-timeline-missing-subject.html - WPT Dashboard Interop Dashboard
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>ViewTimeline with missing subject</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
</head>
<style type="text/css">
#target {
background: blue;
height: 100px;
width: 100px;
}
#scroller {
overflow: scroll;
}
#filler {
height: 300vh;
}
</style>
<body onload="runTests()">
<div id="scroller">
<div id="target"></div>
<div id="filler"></div>
</div>
</body>
<script type="text/javascript">
function raf() {
return new Promise(resolve => {
requestAnimationFrame(() => {
requestAnimationFrame(resolve);
})
});
}
function runTests() {
promise_test(async t => {
const timeline = new ViewTimeline();
const anim =
target.animate(
{ backgroundColor: ['green', 'red' ] },
{ duration: 100,
timeline: timeline });
await raf();
scroller.scrollTop = 50;
await raf();
assert_equals(timeline.currentTime, null,
'ViewTimeline with missing subject is inactive');
});
}
</script>
</html>