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<!DOCTYPE html>
<html>
<head>
<title>Test for DisplayPort Expiry</title>
<meta charset="utf-8">
<script src="apz_test_utils.js"></script>
<script src="/tests/SimpleTest/EventUtils.js"></script>
<script src="/tests/SimpleTest/paint_listener.js"></script>
<style>
#first {
height: 40vh;
width: 100%;
background: green;
overflow: scroll;
}
#second {
height: 40vh;
width: 100%;
background: yellow;
overflow: scroll;
}
#inner {
height: 20vh;
width: 50%;
background: red;
}
.big {
height: 100vh;
width: 100vw;
}
</style>
</head>
<body>
<div id="first">
<div class="big">
</div>
</div>
<br>
<div id="second">
<div id="inner">
<div class="big">
</div>
</div>
<div class="big">
</div>
</div>
</body>
<script>
async function test() {
await promiseFrame();
let paintCount = 0;
function countPaints() {
paintCount += 1;
}
window.addEventListener("MozAfterPaint", countPaints);
await SpecialPowers.promiseTimeout(200);
window.removeEventListener("MozAfterPaint", countPaints);
info("paint count: " + paintCount);
ok(paintCount < 5, "Paint count is within the expect range");
}
SimpleTest.waitForExplicitFinish();
waitUntilApzStable()
.then(test)
.then(subtestDone, subtestFailed);
</script>
</html>