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<!doctype html>
<title>autoplay hidden</title>
<link rel="author" title="Intel" href="http://www.intel.com">
<link rel="help" href="https://html.spec.whatwg.org/multipage/media.html#ready-states"/>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/common/media.js"></script>
<div id="log"></div>
<script>
// https://html.spec.whatwg.org/multipage/media.html#ready-states:eligible-for-autoplay-2
promise_test(async t => {
let video = document.createElement("video");
video.src = getVideoURI("/media/movie_5");
video.autoplay = true;
// In Safari, Chrome and Firefox, the video needs to be muted in order to be
// paused when hidden. They decided to do this in order to save resources when
// a video goes out of view and isn't expected to make any sound.
video.muted = true;
video.loop = true;
let watcher = new EventWatcher(t, video, ["playing", "pause"]);
document.body.appendChild(video);
await watcher.wait_for("playing");
assert_false(video.paused, "paused when video is display");
video.hidden = true;
await watcher.wait_for("pause");
assert_true(video.paused, "paused when video is hidden");
video.hidden = false;
await watcher.wait_for("playing");
assert_false(video.paused, "paused when video is display");
}, "Allow delaying autoplay until video elements become visible");
</script>
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