test_DurationChange.html

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<head>

  <title>MSE: check that duration change behaves properly</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" />

</head>

<body>

<pre id="test">

<script class="testbody" type="text/javascript">

SimpleTest.waitForExplicitFinish();

runWithMSE(async (ms, v) => {

  await once(ms, "sourceopen");

  const sb = ms.addSourceBuffer("video/webm");

  const arrayBuffer = await fetchWithXHR("seek.webm");

  sb.appendBuffer(new Uint8Array(arrayBuffer, 0, 318));

  await Promise.all([once(v, "loadedmetadata"), once(sb, "updateend")]);

  is(v.duration, ms.duration, "video duration is mediasource one");

  must_not_throw(() => ms.duration = 0, "duration = 0 is valid initially");

  is(v.duration, 0, "reducing duration with no data buffered is valid");

  sb.appendBuffer(new Uint8Array(arrayBuffer, 318));

  // Adding more data will fire durationchange.

  await once(sb, "updateend");

  ok(true, "got updateend");

  // XXX: Duration should be exactly 4.0, see bug 1065207.

  ok(Math.abs(v.duration - 4) <= 0.002, "Video has correct duration");

  must_throw(() => ms.duration = 0,

             "Must use remove for range removal",

             "InvalidStateError");

  ok(Math.abs(v.duration - 4) <= 0.002, "Video has correct duration");

  must_not_throw(() => ms.duration = 10, "setting duration past data is valid");

  is(v.duration, 10, "extending duration is always valid");

  // The last sample has a start time of 3.967000s and a end time of 4.001 (see bug 1065207).

  must_not_throw(() => ms.duration = 3.967000,

                 "setting duration with >= highest frame presentation time is valid");

  is(v.duration, sb.buffered.end(0),

     "duration is the highest end time reported by the buffered attribute ");

  must_not_throw(() => ms.duration = 3.97,

                 "setting duration with >= highest frame presentation time is valid");

  is(v.duration, sb.buffered.end(0),

     "duration is the highest end time reported by the buffered attribute ");

  must_throw(() => ms.duration = 3.96,

             "setting duration with < highest frame presentation time is not valid",

             "InvalidStateError");

  is(v.duration, sb.buffered.end(0),

     "duration is the highest end time reported by the buffered attribute ");

  must_throw(() => ms.duration = -1, "can't set a negative duration", "TypeError");

  sb.remove(sb.buffered.end(0), Infinity);

  is(sb.updating, true, "updating is true");

  must_throw(() => ms.duration = Infinity,

             "setting the duration while updating is not allowed",

             "InvalidStateError");

  must_throw(() => sb.abort(),

             "Can't use abort while range removal is in progress",

             "InvalidStateError");

  is(v.duration, sb.buffered.end(0),

     "duration is the highest end time reported by the buffered attribute ");

  await once(sb, "updateend");

  ms.endOfStream();

  await once(ms, "sourceended");

  SimpleTest.finish();

});

</script>

</pre>

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</html>