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<!DOCTYPE html>
<title>Remove the child of the fullscreen element</title>
<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="log"></div>
<div id="parent">
<div></div>
</div>
<script>
promise_test(async (t) => {
t.add_cleanup(() => {
if (document.fullscreenElement) {
return document.exitFullscreen();
}
});
const parent = document.getElementById("parent");
await Promise.all([trusted_request(parent), fullScreenChange()]);
assert_equals(document.fullscreenElement, parent);
parent.textContent = ""; // removes all children
// The fullscreen element should not be affected.
assert_equals(document.fullscreenElement, parent);
document.onfullscreenchange = t.unreached_func("fullscreenchange event");
// A fullscreenchange event would be fired after an async section
// and an animation frame task, so wait until after that.
await new Promise((resolve) => {
requestAnimationFrame(resolve);
});
});
</script>
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