<!DOCTYPE html>
<html>
<head>
    <script src=../media-file.js></script>
    <script src=../video-test.js></script>
    <script>
    window.addEventListener('load', async event => {
        if (window.internals)
            run("internals.setCaptionDisplayMode('Automatic')");
        video = document.querySelector('video');

        run('video.src = findMediaFile("video", "../content/test")');

        run('track = video.addTextTrack("subtitles", "English", "en")');
        run('track.mode = "showing"');

        await waitFor(video, 'loadeddata');

        let cueStartTime = 0;
        let cueDuration = 0.050;
        let cueCount = 0;
        missedCueCount = 0;

        while (cueStartTime < video.duration) {
            let cue = new VTTCue(cueStartTime, cueStartTime + cueDuration, `Cue ${ ++cueCount }`)
            cueStartTime += cueDuration;

            cue.addEventListener('enter', event => {
                cue.enterFireTime = performance.now();
            });
            cue.addEventListener('exit', event => {
                cue.exitFireTime = performance.now();
                let eventDuration = cue.exitFireTime - cue.enterFireTime;
                let cueDuration = cue.endTime - cue.startTime;

                if (eventDuration * 2 < cueDuration)
                    ++missedCueCount;
            });

            track.addCue(cue);
        }

        consoleWrite(`Created ${ cueCount } cues.`);

        video.play();
        await waitFor(video, 'ended');

        testExpected('missedCueCount', 50, '<');

        endTest();
    }, {once: true});
    </script>
</head>
<body>
    <video controls></video>
</body>