| <!DOCTYPE html> |
| <script src="../resources/testharness.js"></script> |
| <script src="../resources/testharnessreport.js"></script> |
| <script> |
| 'use strict'; |
| |
| // The embedder may define its own elements via the CustomElementRegistry |
| // whose names are not valid custom element names. Ensure that script does |
| // not have access to such names. |
| var embedderName = 'embeddercustomelement'; |
| window.internals.addEmbedderCustomElementName(embedderName); |
| |
| test(() => { |
| assert_throws('SyntaxError', () => { |
| window.customElements.define( |
| embedderName, class extends HTMLElement {}); |
| }); |
| }, 'customElements.define embedder element name'); |
| |
| test(() => { |
| assert_throws('NotSupportedError', () => { |
| window.customElements.define( |
| 'valid-name', class extends HTMLElement {}, {extends: embedderName}); |
| }); |
| }, 'customElements.define extending embedder element name'); |
| |
| promise_test((t) => { |
| var whenDefinedPromise = window.customElements.whenDefined(embedderName); |
| |
| // With the correct behaviour, |whenDefinedPromise| will reject immediately |
| // and so the following will reject. |
| // With the incorrect behaviour, |whenDefinedPromise| will be forever |
| // pending. Rather than waiting for the test harness to time out, we'll |
| // have this resolve once we know that |whenDefinedPromise| hasn't rejected. |
| var rejectImmediatelyOrResolve = |
| Promise.race([whenDefinedPromise, Promise.resolve()]); |
| |
| return promise_rejects(t, 'SyntaxError', rejectImmediatelyOrResolve); |
| }, 'customElements.whenDefined embedder element name'); |
| |
| </script> |
