34 lines
1.1 KiB
HTML
34 lines
1.1 KiB
HTML
<!DOCTYPE html>
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<html>
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<head>
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<meta charset="utf-8">
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<meta name="timeout" content="long">
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<meta name="author" title="Keith Cirkel" href="mailto:wpt@keithcirkel.co.uk" />
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<link rel="help" href="https://html.spec.whatwg.org/multipage/custom-elements.html#custom-state-pseudo-class" />
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<title>CustomStateSet doesn't crash after GC on detached node</title>
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<script src="/resources/testharness.js"></script>
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<script src="/resources/testharnessreport.js"></script>
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<script src="/common/gc.js"></script>
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</head>
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<body>
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<custom-state id="myCE"></custom-state>
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<script>
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customElements.define('custom-state', class extends HTMLElement {
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connectedCallback() {
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this.elementInternals = this.attachInternals();
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}
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});
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promise_test(async function() {
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const states = myCE.elementInternals.states;
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myCE.remove();
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await garbageCollect();
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states.add('still-works');
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assert_equals(states.size, 1);
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assert_true(states.delete('still-works'));
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assert_equals(states.size, 0);
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}, "customstateset doesn't crash after GC on detached node");
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</script>
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</body>
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</html>
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