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<!DOCTYPE html>
<html>
<head>
<title>CSSOM View - extensions to the Document interface</title>
<link rel="author" title="Xiaocheng Hu" href="mailto:xiaochengh@chromium.org">
<link rel="help" href="http://www.w3.org/TR/cssom-view/#extensions-to-the-document-interface">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<style>
.container {
display: flex;
width: 500px;
height: 100px;
}
.map {
flex: 1 1 auto;
position: relative;
}
.box {
flex: 0 0 auto;
}
.child {
width: 183.66px;
}
</style>
</head>
<body>
<div class="container">
<div class="map"></div>
<div class="box" id="box">
<div class="child"></div>
</div>
</div>
<script>
const box = document.getElementById('box');
const rect = box.getBoundingClientRect();
test(() => {
assert_equals(document.elementFromPoint(rect.x, rect.y), box);
}, 'Hit test top left corner of box');
test(() => {
assert_equals(document.elementFromPoint(rect.x + rect.width - 1, rect.y), box);
}, 'Hit test top right corner of box');
test(() => {
assert_equals(document.elementFromPoint(rect.x, rect.y + rect.height - 1), box);
}, 'Hit test bottom left corner of box');
test(() => {
assert_equals(document.elementFromPoint(rect.x + rect.width - 1, rect.y + rect.height - 1), box);
}, 'Hit test lower left corner of box');
</script>
</body>
</html>
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