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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 17:32:43 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 17:32:43 +0000
commit6bf0a5cb5034a7e684dcc3500e841785237ce2dd (patch)
treea68f146d7fa01f0134297619fbe7e33db084e0aa /testing/web-platform/tests/custom-elements/scoped-registry/CustomElementRegistry-constructor.tentative.html
parentInitial commit. (diff)
downloadthunderbird-upstream.tar.xz
thunderbird-upstream.zip
Adding upstream version 1:115.7.0.upstream/1%115.7.0upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
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diff --git a/testing/web-platform/tests/custom-elements/scoped-registry/CustomElementRegistry-constructor.tentative.html b/testing/web-platform/tests/custom-elements/scoped-registry/CustomElementRegistry-constructor.tentative.html
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+<!DOCTYPE html>
+<meta name="author" title="Xiaocheng Hu" href="mailto:xiaochengh@chromium.org">
+<meta name="assert" content="User code can create non-global CustomElementRegistry instances and add definitions">
+<link rel="help" href="https://wicg.github.io/webcomponents/proposals/Scoped-Custom-Element-Registries">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script>
+test(() => {
+ let registry = new CustomElementRegistry();
+ assert_not_equals(registry, window.customElements);
+
+ // Define an autonomous element with the new registry. It should not become a
+ // global definition.
+ class MyAutonomous extends HTMLElement {};
+ registry.define('my-autonomous', MyAutonomous);
+ assert_equals(registry.get('my-autonomous'), MyAutonomous);
+ assert_equals(window.customElements.get('my-autonomous'), undefined);
+ assert_false(document.createElement('my-autonomous') instanceof MyAutonomous);
+
+ // Do the same for a customized built-in element.
+ class MyCustomizedBuiltIn extends HTMLParagraphElement {};
+ registry.define('my-customized-builtin', MyCustomizedBuiltIn, {extends: 'p'});
+ assert_equals(registry.get('my-customized-builtin'), MyCustomizedBuiltIn);
+ assert_equals(window.customElements.get('my-customized-builtin'), undefined);
+ assert_false(document.createElement('p', {is: 'my-customized-builtin'}) instanceof MyCustomizedBuiltIn);
+}, 'Create non-global CustomElementRegistry and add definitions');
+</script>