test_autoplay_gvobserver_late_auth.html

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<!DOCTYPE html>

<html>

<head>

  <title>GeckoView asynchronous autoplay permission grant test (GVAutoplayObserver)</title>

  <script src="/tests/SimpleTest/SimpleTest.js"></script>

  <script type="text/javascript" src="manifest.js"></script>

  <script type="text/javascript" src="AutoplayTestUtils.js"></script>

  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />

</head>

<body>

<script>

const TIMEOUT_IN_MS = 1000;

SimpleTest.requestFlakyTimeout(`Need a ${TIMEOUT_IN_MS}ms timer to check whether autoplay begins.`);

SimpleTest.requestCompleteLog();

add_task(async function testGVDelayedAutoplayStart() {

  await SpecialPowers.pushPrefEnv({

    set: [

      // Below must be true to hit async permission code path

      // https://searchfox.org/mozilla-central/rev/6e2b186c296474e032d9ae2e000b7c870396775c/dom/media/autoplay/AutoplayPolicy.cpp#229-232

      ["media.geckoview.autoplay.request", true],

      // 8 = Generate asynchronous eALLOWED permission grants.

      ["media.geckoview.autoplay.request.testing", 8],

],

});

  // Replicate setup for Bug 1913709

  const video = document.createElement("video");

  const playingPromise = once(video, "playing");

  video.muted = true;

  video.preload = "none";

  video.src = "short.mp4"

  video.setAttribute("autoplay", "");

  document.body.appendChild(video);

  await playingPromise;

  ok(true, "Video should autoplay.");

});

</script>

</body>

</html>