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  <title>Test for Bug 1281418 - Change the src attribue for TrackElement.</title>
  <script type="text/javascript" src="/MochiKit/MochiKit.js"></script>
  <script src="/tests/SimpleTest/SimpleTest.js"></script>
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<pre id="test">
<script class="testbody" type="text/javascript">
  SimpleTest.waitForExplicitFinish();

  var video = document.createElement("video");
  video.src = "seek.webm";
  video.preload = "metadata";
  var trackElement = document.createElement("track");
  trackElement.src = "basic.vtt";
  trackElement.default = true;

  document.getElementById("content").appendChild(video);
  video.appendChild(trackElement);

  video.addEventListener("loadedmetadata", function metadata() {
    if (trackElement.readyState <= 1) {
      setTimeout(metadata, 0);
      return;
    }
    is(video.textTracks.length, 1, "Length should be 1.");
    is(video.textTracks[0].cues.length, 6, "Cue length should be 6.");

    trackElement.src = "sequential.vtt";
    trackElement.track.mode = "showing";
    video.play();
  });

  video.addEventListener("ended", function end() {
    is(trackElement.readyState, 2, "readyState should be 2.")
    is(video.textTracks.length, 1, "Length should be 1.");
    is(video.textTracks[0].cues.length, 3, "Cue length should be 3.");
    SimpleTest.finish();
  });
</script>
</pre>
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