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<head>
  <title>MSE: seeking to end of data with data gap.</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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<body>
<pre id="test">
<script class="testbody" type="text/javascript">

SimpleTest.waitForExplicitFinish();

runWithMSE(async (ms, el) => {
  await once(ms, "sourceopen");
  ok(true, "Receive a sourceopen event");
  const videosb = ms.addSourceBuffer("video/mp4");
  const audiosb = ms.addSourceBuffer("audio/mp4");

  await fetchAndLoad(videosb, "bipbop/bipbop_video", ["init"], ".mp4");
  await fetchAndLoad(videosb, "bipbop/bipbop_video", range(1, 6), ".m4s");
  await fetchAndLoad(audiosb, "bipbop/bipbop_audio", ["init"], ".mp4");
  is(videosb.buffered.length, 1, "continuous buffered range");
  // Ensure we have at least 2s less audio than video.
  audiosb.appendWindowEnd = videosb.buffered.end(0) - 2;
  await fetchAndLoad(audiosb, "bipbop/bipbop_audio", range(1, 6), ".m4s");
  ms.endOfStream();
  await Promise.all([once(el, "durationchange"), once(ms, "sourceended")]);
  ok(true, "endOfStream completed");
  // Seek to the middle of the gap where audio is missing. As we are in readyState = ended
  // seeking must complete.
  el.currentTime = videosb.buffered.end(0) / 2 + audiosb.buffered.end(0) / 2;
  ok(el.currentTime - audiosb.buffered.end(0) >= 1, "gap is big enough");
  is(el.buffered.length, 1, "continuous buffered range");
  is(el.buffered.end(0), videosb.buffered.end(0),
     "buffered range end is aligned with longest track");
  ok(el.seeking, "element is now seeking");
  ok(el.currentTime >= el.buffered.start(0) && el.currentTime <= el.buffered.end(0),
     "seeking time is in buffered range");
  ok(el.currentTime > audiosb.buffered.end(0),
     "seeking point is not buffered in audio track");
  await once(el, "seeked");
  ok(true, "we have successfully seeked");
  // Now ensure that we can play to the end, even though we are missing data in one track.
  el.play();
  await once(el, "ended");
  SimpleTest.finish(SimpleTest);
});

</script>
</pre>
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