track-cues-missed-no-immediate-events.html

Enable keyboard shortcuts

This WPT test may be referenced by the following Test IDs:
- /html/semantics/embedded-content/media-elements/track/track-element/track-cues-missed-no-immediate-events.html - WPT Dashboard Interop Dashboard

<!DOCTYPE html>

<title>Adding a missed cue during playback should not fire events</title>

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

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

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

<video>

</video>

<script>

async_test(t => {

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

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

    let cueAdded = false;

    video.ontimeupdate = t.step_func(() => {

        // After 0.3s, add a cue that is completely before currentTime.

        if (!cueAdded && video.currentTime > 0.3) {

            cueAdded = true;

            let missedCue = new VTTCue(0.1, 0.3, "Test");

            missedCue.onenter = t.unreached_func("onenter for missed cue should not fire");

            missedCue.onexit = t.unreached_func("onexit for missed cue should not fire");

            track.addCue(missedCue);

        // We should play past 1s without the events firing.

        if (video.currentTime > 1.0) {

            video.ontimeupdate = null;

            t.done();

});

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

    video.play();

});

</script>