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Test Info:

<!DOCTYPE html>
<html class="reftest-wait">
<title>Verify that calling pause immediately after playing works as expected</title>
<link rel="match" href="references/translated-box-ref.html">
<script src="/common/reftest-wait.js"></script>
<script src="/web-animations/testcommon.js"></script>
<script src="common.js"></script>
#box {
width: 100px;
height: 100px;
background-color: green;
<div id="box"></div>
registerPassthroughAnimator().then(async _ => {
const box = document.getElementById('box');
const effect = new KeyframeEffect(box,
{ transform: ['translateY(100px)', 'translateY(200px)'] },
{ duration: 100, iterations: 1 }
const animation = new WorkletAnimation('passthrough', effect);;
// Immediately pausing animation should freeze the current time at 0.
// Wait at least one frame to ensure a paused animation actually freezes.
await waitForAsyncAnimationFrames(1);