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<!DOCTYPE html>
<title>Test Intersection Observer in fenced frame</title>
<script src="/common/rendering-utils.js"></script>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/common/utils.js"></script>
<script src="resources/utils.js"></script>
<script src="/common/utils.js"></script>
<style>
fencedframe {
width: 100px;
height: 100px;
position: fixed;
top: 0px;
left: 0px;
border: unset;
}
</style>
<body>
<script>
promise_test(async (t) => {
// first entry after observe.
const io_entry_on_registration = token();
// entry after transform.
const io_entry_on_transform = token();
// entry with clip.
const io_entry_on_clip = token();
const frame = attachFencedFrame(generateURL(
"resources/frame-with-intersection-observer.html",
[io_entry_on_registration, io_entry_on_transform, io_entry_on_clip]));
let result = await nextValueFromServer(io_entry_on_registration);
assert_equals(result, "0,0,100,100,true",
"Subscribing to IO dispatches a notification");
// Apply a transform to the fencedframe and ensure it gets applied to the
// intersectionRect.
frame.style.transform = 'translate(-10px, -20px)';
result = await nextValueFromServer(io_entry_on_transform);
assert_equals(result, "10,20,90,80,true",
"Transform applies to intersection rect");
// Now add a clip to the fencedframe which should clip the intersectionRect.
frame.style.clipPath = 'inset(10px)';
result = await nextValueFromServer(io_entry_on_clip);
assert_equals(result, "10,20,80,70,false", "Clip applies to intersection rect");
}, 'Intersection Observer Test');
</script>
</body>
</html>
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