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<!DOCTYPE html>
<style>
body {
height: 10000px;
background: grey;
}
</style>
<title>fullscreen root block scrolling</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/resources/testdriver.js"></script>
<script src="/resources/testdriver-vendor.js"></script>
<script src="../trusted-click.js"></script>
<body>
<div>
This page tests that entering fullscreen doesn't adjust the scroll offset
</div>
<script>
promise_test(async (t) => {
t.add_cleanup(() => {
if (document.fullscreenElement) {
return document.exitFullscreen();
}
});
await trusted_click();
document.scrollingElement.scrollTop = 300;
await document.documentElement.requestFullscreen();
await fullScreenChange();
assert_equals(document.fullscreenElement, document.documentElement);
assert_not_equals(document.scrollingElement.scrollTop, 0);
document.scrollingElement.scrollTop = 0;
});
</script>
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