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<!doctype html>
<meta charset="utf-8">
<title>Removing an element from its own focus() call doesn't leave stale :focus-within state</title>
<link rel="help" href="https://drafts.csswg.org/selectors-4/#the-focus-within-pseudo">
<link rel="help" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1996182">
<link rel="author" href="mailto:emilio@crisal.io" title="Emilio Cobos Álvarez">
<link rel="author" href="https://mozilla.com" title="Mozilla">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<div id="root">
<div id="container" tabindex="-1">
<input type="text">
</div>
</div>
<script>
onload = function() {
test(function() {
let root = document.getElementById("root");
let container = document.getElementById("container");
let input = document.querySelector("input");
input.focus();
assert_equals(document.activeElement, input, "activeElement after focus");
assert_true(container.matches(":focus-within"), "container matches :focus-within");
assert_true(root.matches(":focus-within"), "root also matches :focus-within");
// This fires from within the next focus() call
input.addEventListener("focusout", () => { root.innerHTML = "" });
// container is focusable, but gets removed before we get a chance at focusing it.
container.focus();
assert_equals(document.activeElement, document.body, "activeElement after trying to focus sibling");
assert_equals(container.parentNode, null, "container should get removed");
assert_false(container.matches(":focus-within"), "container no longer matches :focus-within");
assert_false(root.matches(":focus-within"), "root no longer matches :focus-within");
});
}
</script>
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