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<!DOCTYPE html>
<title>'cuechange' event on dynamically created track element</title>
<meta name="timeout" content="long">
<script src="/common/media.js"></script>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<video>
<script>
/**
* 'cuechange' event should be correctly dispatched on the dynamically created
* track element.
*/
promise_test(function(t) {
const video = document.querySelector("video");
const track = document.createElement("track");
track.src = "resources/cues-chrono-order.vtt";
track.track.mode = "hidden";
video.appendChild(track);
const cueChangedPromise = new Promise(r => track.oncuechange = r);
video.src = getVideoURI("/media/test");
// 'TimeMarchesOn' algorithm will be run after calling 'play()', from which
// the 'cuechange' event would be dispatched.
video.play();
return cueChangedPromise;
});
</script>
</video>
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