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<!DOCTYPE HTML>
<html>
<head>
<title>Test scrolling flattened inactive frames</title>
<script src="/tests/SimpleTest/SimpleTest.js"></script>
<script src="/tests/SimpleTest/EventUtils.js"></script>
<script src="/tests/SimpleTest/paint_listener.js"></script>
<script type="application/javascript" src="apz_test_utils.js"></script>
<link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
</head>
<body>
<div id="container" style="height: 300px; width: 600px; overflow: auto; background: yellow">
<div id="outer" style="height: 400px; width: 500px; overflow: auto; background: black">
<div id="inner" style="mix-blend-mode: screen; height: 800px; overflow: auto; background: purple">
</div>
</div>
</div>
<script class="testbody" type="text/javascript">
async function test() {
var container = document.getElementById("container");
var outer = document.getElementById("outer");
var inner = document.getElementById("inner");
var outerScrollTop = outer.scrollTop;
var containerScrollTop = container.scrollTop;
var event = {
deltaMode: WheelEvent.DOM_DELTA_LINE,
deltaX: 0,
deltaY: 10,
lineOrPageDeltaX: 0,
lineOrPageDeltaY: 10,
};
await new Promise(resolve => {
sendWheelAndPaint(inner, 20, 30, event, resolve);
});
ok(container.scrollTop == containerScrollTop, "container scrollframe should not have scrolled");
ok(outer.scrollTop > outerScrollTop, "nested scrollframe should have scrolled");
}
SimpleTest.waitForExplicitFinish();
pushPrefs([["general.smoothScroll", false],
["mousewheel.transaction.timeout", 1000000],
["test.events.async.enabled", true]])
.then(waitUntilApzStable)
.then(test)
.then(SimpleTest.finish, SimpleTest.finishWithFailure);
</script>
</body>
</html>
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