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firefox/testing/web-platform/tests/custom-elements/registries/CustomElementRegistry-define.html
Daniel Baumann 5e9a113729
Adding upstream version 140.0.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
2025-06-25 09:37:52 +02:00

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HTML

<!DOCTYPE html>
<html>
<head>
<meta name="author" title="Ryosuke Niwa" href="mailto:rniwa@webkit.org">
<link rel="help" href="https://github.com/whatwg/html/issues/10854">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
</head>
<body>
<script>
test(() => {
let registry = new CustomElementRegistry();
assert_not_equals(registry, window.customElements);
}, 'Create a CustomElementRegistry not identically equal to window.customElements');
test(() => {
let registry = new CustomElementRegistry();
window.customElements.define('a-b', class extends HTMLElement {});
assert_equals(registry.get('a-b'), undefined);
}, 'Defining an element in the global registry does not add a definition to a scoped CustomElementRegistry');
test(() => {
let registry = new CustomElementRegistry();
registry.define('b-c', class extends HTMLElement {});
assert_equals(window.customElements.get('b-c'), undefined);
}, 'Defining an element in a scoped global registry does not add a definition to the global registry');
</script>
</body>
</html>