1553571-1.html - mozsearch

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<!-- reftest-wait because it takes at least two changes of the transform style before it becomes active -->

<html class='reftest-wait'>

<head>

<script>

let num = 0;

let numMs = 50;

var changesLeft = 10;

function go() {

	window.setTimeout(changeit, 0);

function changeit() {

	var a = document.getElementById("a");

	a.style.transform = 'scale(' + (256.1 + Math.random()*0.01) + ')';

	num++;

	if (changesLeft > 0) {

		--changesLeft;

		window.setTimeout(changeit, numMs);

	if (changesLeft == 0) {

		// 75-100ms is the timeout for expirty from the active layer tracker.

		// Increase the time between transform tweaks to 74ms to give the reftest the best

		// chance of running the mozafterpaint handler and checking that there are no more

		// paints pending so it can finish.

		numMs = 74;

		if (num >= 100 && navigator.appVersion.includes("Android")) {

			// That's not enough time on Android, so give it a bit more time. This still

			// reproduces the original bug with the original patch backed out, even though

			// one would think anything over 100ms would not reproduce, I'm not sure why.

			// It's better to run the this with this timeout then have the test disabled.

			numMs = 200;

		window.setTimeout(changeit, numMs);

		document.documentElement.classList.remove("reftest-wait");

</script>

</head>

<body onload="go();">

<div id="a" style="width: 1px; height: 1px; position: absolute; left: 200px; top: 200px;">

	<img style="width: 1px; height: 1px;" src="repeatable-diagonal-gradient.png">

</div>

</body>

</html>