test_background_video_suspend.html

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<!DOCTYPE html>

<meta charset="utf-8">

<title>Test Background Video Suspends</title>

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

<script src="manifest.js"></script>

<script src="background_video.js"></script>

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

<script type="text/javascript">

  "use strict";

  var manager = new MediaTestManager;

  var MIN_DELAY = 100;

  function testDelay(v, start, min) {

    let end = performance.now();

    let delay = end - start;

    ok(delay > min, `${v.token} suspended with a delay of ${delay} ms`);

  async function runTest(test, token) {

    let video = appendVideoToDocWithoutLoad(token);

    manager.started(token);

    let visible = waitUntilVisible(video);

    let ended = nextVideoEnded(video);

    let playing = nextVideoPlaying(video);

    let resumes = nextVideoResumes(video);

    let suspends = nextVideoSuspends(video);

    Log(token, "Waiting until video becomes visible");

    await visible;

    Log(token, "Waiting for metadata loaded");

    await loadAndWaitUntilLoadedmetadata(video, test.name);

    Log(token, "Start playing");

    video.play();

    Log(token, "Waiting for video playing");

    await playing;

    let start = performance.now();

    Log(token, "Set hidden");

    video.setVisible(false);

    Log(token, "Waiting for video suspend");

    await suspends;

    testDelay(video, start, MIN_DELAY);

    Log(token, "Set visible");

    video.setVisible(true);

    Log(token, "Waiting for video resume");

    await resumes;

    Log(token, "Waiting for ended");

    await ended;

    ok(video.currentTime >= video.duration, 'current time approximates duration.');

    removeNodeAndSource(video);

    manager.finished(token);

  startTest({

    desc: 'Test Background Video Suspends',

    prefs: [

      ["media.test.video-suspend", true],

      ["media.suspend-background-video.enabled", true],

      // Use a short delay to ensure video decode suspend happens before end

      // of video.

      ["media.suspend-background-video.delay-ms", MIN_DELAY],

      ["privacy.reduceTimerPrecision", false]

],

    tests: gDecodeSuspendTests,

    runTest

});

</script>