<!DOCTYPE HTML>
<html>
<head>
  <title>MSE: basic functionality</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();

// This test checks that readyState is properly set and the appropriate events are being fired accordingly:
// 1. Ensure that play/playing aren't fired before any media data been added.
// 2. Load more than 10s of data and ensure that canplay, play and playing events are fired.

runWithMSE(async (ms, el) => {
  el.controls = true;
  el.autoplay = true;
  const eventCounts = { play: 0, playing: 0 };
  await once(ms, "sourceopen");
  logEvents(el);
  ok(true, "Receive a sourceopen event");

  const forbiddenEvents = e => {
    ok(el.readyState >= el.HAVE_FUTURE_DATA, "Must not have received event too early");
    is(eventCounts[e.type], 0, "event should have only be fired once");
    eventCounts[e.type]++;
  };
  el.addEventListener("play", forbiddenEvents);
  el.addEventListener("playing", forbiddenEvents);

  const videosb = ms.addSourceBuffer("video/mp4");
  el.addEventListener("error", e => {
    ok(false, `should not fire ${e.type} event`);
    SimpleTest.finish();
  });
  is(el.readyState, el.HAVE_NOTHING, "readyState is HAVE_NOTHING");
  let p = once(el, "loadedmetadata");
  await fetchAndLoad(videosb, "bipbop/bipbop_video", ["init"], ".mp4");
  await p;
  ok(true, "got loadedmetadata event");
  // We shift the timestamps slightly to create a small gaps at the start.
  // one that should normally be ignored.
  videosb.timestampOffset = 0.1;
  p = Promise.all(["loadeddata", "canplay", "play", "playing"].map(e => once(el, e)));
  await fetchAndLoad(videosb, "bipbop/bipbop_video", range(1, 14), ".m4s");
  await p;
  ok(true, "got all required event");
  SimpleTest.finish();
});

</script>
</pre>
</body>
</html>
