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<!doctype html>
<html>
<head>
<title>Viewport: Resize Event On Load Overflowing Page</title>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, minimum-scale=1">
<script>
var opener = window.opener;
var numViewResizes = 0;
window.visualViewport.addEventListener('resize', function() {
numViewResizes++;
});
window.addEventListener('load', function() {
requestAnimationFrame(function() {
requestAnimationFrame(
opener.t.step_func_done(function() {
var isOverlay = opener.calculateScrollbarThickness() == 0;
opener.assert_equals(numViewResizes, isOverlay ? 0 : 1);
}));
});
});
</script>
<style>
html {
height: 100%;
}
body {
/* Ensure overflow */
height: 200%;
}
#log {
overflow: auto;
}
</style>
</head>
<body>
<h1>Viewport: Resize Event On Load Overflowing Page</h1>
<h4>
Test Description: This test ensures that we fire a resize event against
window.visualViewport if the page has overflow (since this creates a scrollbar
and thus changes the viewport size).
</h4>
<div id="log"></div>
</body>
</html>
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