track-cue-negative-timestamp-events.html

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This WPT test may be referenced by the following Test IDs:
- /html/semantics/embedded-content/media-elements/track/track-element/track-cue-negative-timestamp-events.html - WPT Dashboard Interop Dashboard

<!DOCTYPE html>

<title>Enter, Exit events for cues with negative timestamps</title>

<script src="/common/media.js"></script>

<script src="/resources/testharness.js"></script>

<script src="/resources/testharnessreport.js"></script>

<video>

  <script>

  async_test(function(t) {

    var video = document.querySelector("video");

    var track = video.addTextTrack("subtitles");

    // Add cue with negative startTime.

    var cue = new VTTCue(-10, 1, "Sausage?");

    track.addCue(cue);

    assert_equals(track.cues.length, 1);

    cue.onenter = t.step_func(function() {

      cue.onexit = t.step_func_done();

});

    // Add cue with negative startTime and negative endTime.

    // This cue should never be active.

    var missedCue = new VTTCue(-110, -3.4, "Pepperoni?");

    track.addCue(missedCue);

    assert_equals(track.cues.length, 2);

    missedCue.onenter = t.unreached_func();

    missedCue.onexit = t.unreached_func();

    video.src = getVideoURI("/media/test");

    video.play();

});

  </script>

</video>