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  <title>MSE: |waiting| event when source data is missing</title>
  <script src="/tests/SimpleTest/SimpleTest.js"></script>
  <script type="text/javascript" src="mediasource.js"></script>
  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
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<pre id="test"><script class="testbody" type="text/javascript">

SimpleTest.waitForExplicitFinish();

runWithMSE(async (ms, el) => {
  el.controls = true;
  await once(ms, "sourceopen");
  ok(true, "Receive a sourceopen event");
  const audiosb = ms.addSourceBuffer("audio/mp4");
  const videosb = ms.addSourceBuffer("video/mp4");
  await fetchAndLoad(audiosb, "bipbop/bipbop_audio", ["init"], ".mp4");
  await fetchAndLoad(audiosb, "bipbop/bipbop_audio", range(1, 5), ".m4s");
  await fetchAndLoad(audiosb, "bipbop/bipbop_audio", range(6, 12), ".m4s");
  await fetchAndLoad(videosb, "bipbop/bipbop_video", ["init"], ".mp4");
  await fetchAndLoad(videosb, "bipbop/bipbop_video", range(1, 6), ".m4s");
  await fetchAndLoad(videosb, "bipbop/bipbop_video", range(7, 14), ".m4s");
  // HTMLMediaElement fires "waiting" if somebody invokes |play()| before the MDSM
  // has notified it of available data. Make sure that we get "playing" before
  // we starting waiting for "waiting".
  info("Invoking play()");
  let p = once(el, "playing");
  el.play();
  await p;
  ok(true, "Video playing. It should play for a bit, then fire 'waiting'");
  p = once(el, "waiting");
  el.play();
  await p;
  // currentTime is based on the current video frame, so if the audio ends just before
  // the next video frame, currentTime can be up to 1 frame's worth earlier than
  // min(audioEnd, videoEnd).
  // 0.0465 is the length of the last audio frame.
  ok(el.currentTime >= (Math.min(audiosb.buffered.end(0), videosb.buffered.end(0)) - 0.0465),
     `Got a waiting event at ${el.currentTime}`);
  info("Loading more data");
  p = once(el, "ended");
  await Promise.all([
    fetchAndLoad(audiosb, "bipbop/bipbop_audio", [5], ".m4s"),
    fetchAndLoad(videosb, "bipbop/bipbop_video", [6], ".m4s"),
  ]);
  ms.endOfStream();
  await p;
  // These fuzz factors are bigger than they should be. We should investigate
  // and fix them in bug 1137574.
  isfuzzy(el.duration, 10.1, 0.1, "Video has correct duration: " + el.duration);
  isfuzzy(el.currentTime, el.duration, 0.1, "Video has correct currentTime.");
  SimpleTest.finish();
});

</script>
</pre>
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