<!DOCTYPE html>
<html>
<body>
<script src="../../resources/testharness.js"></script>
<script src="../../resources/testharnessreport.js"></script>
<script>

promise_test(async t => {
	let firstFrameTimestamp = await new Promise(requestAnimationFrame);
	let secondFrameTimestamp = await new Promise(requestAnimationFrame);
	assert_greater_than(secondFrameTimestamp, firstFrameTimestamp);
}, "Timestamps of requestAnimationFrame() callbacks increase.");

</script>
</body>
</html>