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+<!DOCTYPE HTML>
+<html>
+<head>
+  <meta charset="utf-8">
+  <title>Tests for TextTrack DOM Events</title>
+  <script type="text/javascript" src="/MochiKit/MochiKit.js"></script>
+  <script type="text/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<p id="display"></p>
+<div id="content">
+</div>
+<pre id="test">
+<script class="testbody" type="text/javascript">
+SimpleTest.waitForExplicitFinish();
+
+var video = document.createElement("video");
+video.src = "vp9cake.webm";
+video.preload = "auto";
+video.controls = true;
+var trackElement = document.createElement("track");
+trackElement.src = "sequential.vtt";
+trackElement.kind = "subtitles";
+trackElement.default = true;
+document.getElementById("content").appendChild(video);
+video.appendChild(trackElement);
+
+var trackElementCueChangeCount = 0;
+var trackCueChangeCount = 0;
+var cueEnterCount = 0;
+var cueExitCount = 0;
+
+video.addEventListener("loadedmetadata", function run_tests() {
+  // Re-queue run_tests() at the end of the event loop until the track
+  // element has loaded its data.
+  if (trackElement.readyState == 1) {
+    return setTimeout(run_tests, 0);
+  }
+  is(trackElement.readyState, 2, "Track::ReadyState should be set to LOADED.");
+  ok('oncuechange' in trackElement.track, "Track::OnCueChange should exist.");
+
+  var textTrack = trackElement.track;
+  is(textTrack.cues.length, 3, "textTrack.cues.length should 3.");
+  textTrack.cues[0].onenter = function() {
+    ++cueEnterCount;
+  };
+  textTrack.cues[0].onexit = function() {
+    ++cueExitCount;
+  };
+  textTrack.cues[1].onenter = function() {
+    ++cueEnterCount;
+  };
+  textTrack.cues[1].onexit = function() {
+    ++cueExitCount;
+  };
+  textTrack.cues[2].onenter = function() {
+    ++cueEnterCount;
+  };
+  textTrack.cues[2].onexit = function() {
+    ++cueExitCount;
+  };
+
+  trackElement.track.oncuechange = function() {
+    ++trackElementCueChangeCount;
+  };
+
+  trackElement.addEventListener("cuechange", function() {
+    ++trackCueChangeCount;
+  });
+
+  video.play();
+});
+
+video.addEventListener('ended', function() {
+  // Should be fired 1 to 6 times, as there are 3 cues,
+  // with a change event for when it is activated/deactivated
+  // (6 events at most).
+  isnot(trackElementCueChangeCount, 0, "TrackElement should fire cue change at least one time.");
+  ok(trackElementCueChangeCount <= 6, 'trackElementCueChangeCount should <= 6');
+  isnot(trackCueChangeCount, 0, "TrackElement.track should fire cue change at least one time.");
+  ok(trackCueChangeCount <= 6, 'trackCueChangeCount should <= 6');
+  is(cueEnterCount, 3, "cueEnterCount should fire three times.");
+  is(cueExitCount, 3, "cueExitCount should fire three times.");
+  SimpleTest.finish()
+});
+</script>
+</pre>
+</body>
+</html>