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<!doctype html>
<html>
<head>
<title>Viewport: No Resize Event Fired on Overflow Recalc</title>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, minimum-scale=1">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<style>
html {
height: 100%;
}
body {
/* Ensure overflow to start */
height: 200%;
}
</style>
</head>
<body>
<h1>No Resize Event Fired on Overflow Recalc</h1>
<h4>
Test Description: This test ensures we don't fire spurrious resize
events when overflow is recalculated.
</h4>
<script>
function runTest() {
var t = async_test(
"Resize event not fired at window.visualViewport when content is added");
var viewResized = false;
window.visualViewport.addEventListener('resize', function() {
viewResized = true;
});
requestAnimationFrame(t.step_func_done(function() {
assert_equals(viewResized, false);
}));
document.body.style.height = "400%";
}
// Run the test after load to make sure any resize from load doesn't
// interfere.
window.onload = requestAnimationFrame(function() {
requestAnimationFrame(runTest);
});
</script>
<div id="log"></div>
</body>
</html>
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