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<!DOCTYPE html>
<html>
<title>Moving the fullscreen element should not leave the fullscreen flag</title>
<link rel="author" title="Tim Nguyen" href="https://github.com/nt1m">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/resources/testdriver.js"></script>
<script src="/resources/testdriver-vendor.js"></script>
<script src="../trusted-click.js"></script>
<div id="fullscreen-element">Fullscreen element</div>
<div id="new-parent"></div>
<script>
promise_test(async () => {
const fullscreenElement = document.getElementById("fullscreen-element");
await trusted_request(fullscreenElement);
assert_true(fullscreenElement.matches(":fullscreen"), "Element has fullscreen flag");
assert_equals(document.fullscreenElement, fullscreenElement, "Element is fullscreen element");
document.getElementById("new-parent").appendChild(fullscreenElement);
assert_false(fullscreenElement.matches(":fullscreen"), "Element no longer has fullscreen flag after being moved");
assert_false(!!document.fullscreenElement, "There is no more fullscreen element, since fullscreen flag was removed");
await fullScreenChange();
assert_false(fullscreenElement.matches(":fullscreen"), "Element no longer has fullscreen flag after fullscreen change event");
assert_false(!!document.fullscreenElement, "There is no more fullscreen element, since fullscreen flag was removed");
});
</script>
</html>
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