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Bug 1613329 - part2 : add test. r=bzbarsky

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Differential Revision: https://phabricator.services.mozilla.com/D61667

--HG--
extra : moz-landing-system : lando
This commit is contained in:
alwu 2020-02-10 22:35:27 +00:00
parent 478a75705e
commit 48dc9c2f98
1 changed files with 28 additions and 0 deletions
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28
testing/web-platform/tests/html/semantics/embedded-content/media-elements/track/track-element/track-cues-cuechange-dynamically-created-track-element.html Normal file
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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>