test_chaining.html

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<html>

<head>

  <title>Media test: chained ogg files.</title>

  <meta charset='utf-8'>

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

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

  <script type="text/javascript" src="manifest.js"></script>

</head>

<body>

<pre id="test">

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

var manager = new MediaTestManager;

function finish_test(element) {

  removeNodeAndSource(element);

  manager.finished(element.token);

function onended(e) {

  var t = e.target;

  is(t._metadataCount, t._links, "We should have received "+ t._links +

     " metadataloaded event. " + t.src);

  // If we encounter a file that has links with a different numbers of channel,

  // we stop the decoding at the end of the first link. Hence, we report normal

  // |seekable| and |buffered| values.

  if (t._links != 1) {

    is(t.seekable.length, 0, "No seekable ranges should be reported." + t.src);

    is(t.buffered.length, 0, "No buffered region should be reported." + t.src);

  is(t.played.length, 1, "The played region should be continuous." + t.src);

  if (t._links != 1) {

    var oldCurrentTime = t.currentTime;

    t.currentTime = 0.0;

    is(t.currentTime, oldCurrentTime,

        "Seeking should be disabled when playing chained media." + t.src);

  finish_test(t);

function onmetadataloaded(e) {

  var t = e.target;

  if (! t._metadataCount) {

    t._metadataCount = 0;

  if (t._metadataCount > 1 && t._links === 1) {

    ok(false, "We should receive only one \"loadedmetadata\" event for a chained file we don't support.")

  // We should be able to assert equality here, but somehow it fails (rarely but

  // still) on try. Instead, we give it a little slack and assert that the index

  // increases monotonically.

  ok(t.mozGetMetadata().index >= t._metadataCount || t._links === 1,

     "The metadata index value should increase." + t.src);

  ok(t.currentTime >= t._prevCurrentTime,

     "The currenttime should be increased correctly in new chained part.");

  t._prevCurrentTime = t.currentTime;

  // The files have all a user comment name 'index' that increments at each link

  // in the chained media.

  t._metadataCount++;

  if (!t.playing && !t.ended) {

    t.play();

function startTest(test, token) {

  var elemType = /^audio/.test(test.type) ? "audio" : "video";

  var element = document.createElement(elemType);

  document.body.appendChild(element);

  manager.started(token);

  element._links= test.links;

  element.src = test.name;

  element.token = token;

  element.controls = true;

  element.addEventListener("loadedmetadata", onmetadataloaded);

  element.addEventListener("ended", onended);

  element.preload = "metadata";

  element._prevCurrentTime = 0;

manager.runTests(gChainingTests, startTest);

</script>

</pre>

</body>

</html>