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<!DOCTYPE html>
<meta charset="utf-8">
<title>Tests that a popover can be anchored to an unrendered element.</title>
<link rel=author href="mailto:xiaochengh@chromium.org">
<link rel=help href="https://open-ui.org/components/popover.research.explainer">
<link rel=help href="https://html.spec.whatwg.org/multipage/popover.html">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<div id=popover popover anchor=anchor></div>
<div id=anchor></div>
<style>
#anchor {
display: none;
}
[popover] {
inset: auto;
background: lime;
padding: 0;
border: 0;
width: 100px;
height: 100px;
top: anchor(top, 100px);
left: anchor(left, 100px);
}
</style>
<script>
test(() => {
popover.showPopover();
assert_equals(popover.offsetLeft, 100);
assert_equals(popover.offsetTop, 100);
});
</script>
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