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<!DOCTYPE HTML>
<html class="reftest-wait">
<head>
</head>
<link rel="stylesheet" href="vtt_reflow_display.css">
<body>
<div class="video-player">
<div class="video-layer">
<video id="v1" autoplay controls></video>
</div>
</div>
<script>
/**
* In bug 1733232, setting some CSS properties (from bug 1733232 comment17)
* would cause video frame's reflow called very frequently, which crashed the
* video control and caused no cue showing. We compare this test with another
* white video without any cues, and they should NOT be equal.
*/
function testDisplayCueDuringFrequentReflow() {
let video = document.getElementById("v1");
video.src = "white.webm";
let cue = new VTTCue(0, 4, "hello testing");
cue.onenter = _ => {
cue.onenter = null;
video.pause();
document.documentElement.removeAttribute('class');
}
let track = video.addTextTrack("captions");
track.mode = "showing";
track.addCue(cue);
};
window.addEventListener("MozReftestInvalidate",
testDisplayCueDuringFrequentReflow);
</script>
</body>
</html>
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