<!DOCTYPE html>
<html>
<head>
<style>
#target {
width: 100px;
height: 100px;
background-color: black;
transition: transform 10ms;
}
</style>
</head>
<body>
<script src="../resources/testharness.js"></script>
<script src="../resources/testharnessreport.js"></script>
<div id="target"></div>
<script>
function waitNFrames(numberOfFrames, continuation)
{
let elapsedFrames = 0;
(function rAFCallback() {
if (elapsedFrames++ >= numberOfFrames)
continuation();
else
requestAnimationFrame(rAFCallback);
})();
async_test(t => {
requestAnimationFrame(() => {
const target = document.getElementById("target");
target.style.transform = "translate3d(100px, 0, 0)";
target.getAnimations()[0].finished.then(() => {
waitNFrames(2, () => {
assert_equals(internals.acceleratedAnimationsForElement(target).length, 0, "There should be no accelerated animation after the animation completed.");
t.done();
});
}, "An accelerated CSS transition should remove its animation upon completion.");
</script>
</body>
</html>
