track-remove-active-cue.html

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This test has a WPT meta file that expects 1 subtest issues.
This WPT test may be referenced by the following Test IDs:
- /html/semantics/embedded-content/media-elements/track/track-element/track-remove-active-cue.html - WPT Dashboard Interop Dashboard

<!DOCTYPE html>

<title>Removing an active cue</title>

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

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

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

<video></video>

<script>

async_test(function(t) {

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

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

    // Add a text track to the video element.

    video.addTextTrack("captions", "regular captions track", "en");

    // Add a cue to the track with enter event listener.

    var cue = new VTTCue(0, 4, "Random");

    cue.onenter = t.step_func_done(removeActiveCue);

    var track = video.textTracks[0];

    track.addCue(cue);

    function removeActiveCue() {

        assert_equals(track.activeCues.length, 1);

        // Remove the cue while it is active.

        track.removeCue(track.activeCues[0]);

        // No crash. PASS.

    // Play the video and remove cue when it becomes active.

    video.play();

    track.mode = "showing";

});

</script>