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Automatic update from web-platform-testsImplement step 1 of "look up a custom element definition" Per [1], elements with a non-HTML namespace should cause a null custom element definition to be returned. Implement this step. [1] https://html.spec.whatwg.org/multipage/custom-elements.html#look-up-a-custom-element-definition Bug: 882773 Change-Id: Idc8f4c61b94af848e13acf4ff06da2c5f6842454 Reviewed-on: https://chromium-review.googlesource.com/1221325 Reviewed-by: Kent Tamura <tkent@chromium.org> Commit-Queue: Fredrik Söderquist <fs@opera.com> Cr-Commit-Position: refs/heads/master@{#590949} -- wpt-commits: f14bf0134dc164203c8dab1d50e0b629bef6345d wpt-pr: 12977
28 lines
1.2 KiB
HTML
28 lines
1.2 KiB
HTML
<!DOCTYPE html>
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<title>Custom Elements: Custom element in foreign content</title>
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<meta name="assert" content="HTML parser should not create non-HTML namespace custom elements">
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<link rel="help" href="https://html.spec.whatwg.org/#create-an-element-for-the-token">
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<link rel="help" href="https://dom.spec.whatwg.org/#concept-create-element">
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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>
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class ThrowsException extends HTMLElement {
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constructor() {
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throw 'Bad';
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}
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};
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customElements.define('throws-exception', ThrowsException);
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</script>
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<svg>
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<throws-exception/>
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</svg>
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<script>
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test(function () {
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var instance = document.querySelector('throws-exception');
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assert_false(instance instanceof ThrowsException,
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'The HTML parser must NOT instantiate a custom element in non-HTML namespaces');
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assert_false(instance instanceof HTMLUnknownElement, 'The HTML parser should not fallback');
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assert_true(instance instanceof SVGElement,
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'The element created by the HTML parser must be an instance of SVGElement');
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}, 'HTML parser should not create custom elements in non-HTML namespaces');
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</script>
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