File: track-default-attribute.html

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<!DOCTYPE html>
<title>A track with the "default" attribute loads automatically</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<video>
  <track kind="captions" src="resources/default-styles.vtt">
  <track kind="captions" src="resources/metadata-area.vtt">
  <track kind="captions" src="resources/webvtt-file.vtt" id="default" default>
  <script>
  async_test(function(t) {
    var timer = null;
    var tracks = document.querySelectorAll("track");
    for (var track of tracks) {
      track.onload = t.step_func(function() {
        assert_equals(event.target.readyState, HTMLTrackElement.LOADED);
        assert_equals(event.target.id, "default");
        assert_true(event.target.default);
        // End the test after a brief pause so we allow other tracks to load if they will.
        if (timer)
          clearTimeout(timer);
        timer = t.step_timeout(t.step_func_done(), 200);
      });
    }
  });
  </script>
</video>