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<!DOCTYPE html>
<html lang="en" reftest-async-scroll>
<meta charset="utf-8">
<title>Make sure the scrolled layer is not invalidated when you scroll all the way to the bottom</title>
<style>
body {
margin: 0;
}
.scrollbox {
margin: 50px;
width: 200px;
height: 200px;
overflow: auto;
}
.scrolled-contents {
height: 150.2px;
padding-top: 150px;
}
.reftest-no-paint {
margin: 0 20px;
border: 1px solid blue;
height: 25px;
}
</style>
<body>
<div class="scrollbox"
reftest-displayport-x="0" reftest-displayport-y="0"
reftest-displayport-w="200" reftest-displayport-h="200"
reftest-async-scroll-x="0" reftest-async-scroll-y="0">
<div class="scrolled-contents">
<div class="reftest-no-paint">
<!-- This element has the magic "reftest-no-paint" class which
constitutes the actual test here. -->
</div>
</div>
</div>
<script>
var scrollbox = document.querySelector(".scrollbox");
scrollbox.scrollTop = 2;
scrollbox.scrollTop = 1;
scrollbox.scrollTop = 0;
function doTest() {
scrollbox.scrollTop = 999;
document.documentElement.removeAttribute("class");
}
document.addEventListener("MozReftestInvalidate", doTest);
</script>
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