| <!DOCTYPE html> |
| <meta charset="utf-8"> |
| <title>Custom Elements: CEReactions interaction with exceptions</title> |
| <link rel="author" title="Domenic Denicola" href="mailto:d@domenic.me"> |
| <meta name="help" content="https://html.spec.whatwg.org/multipage/#cereactions"> |
| <meta name="help" content="https://github.com/whatwg/html/pull/3235"> |
| |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <script src="../resources/custom-elements-helpers.js"></script> |
| |
| <div id="log"></div> |
| |
| <script> |
| "use strict"; |
| // Basically from https://github.com/whatwg/html/issues/3217#issuecomment-343633273 |
| test_with_window((contentWindow, contentDocument) => { |
| let reactionRan = false; |
| contentWindow.customElements.define("custom-element", class extends contentWindow.HTMLElement { |
| disconnectedCallback() { |
| reactionRan = true; |
| } |
| }); |
| const text = contentDocument.createTextNode(""); |
| contentDocument.documentElement.appendChild(text); |
| const element = contentDocument.createElement("custom-element"); |
| contentDocument.documentElement.appendChild(element); |
| assert_throws("HierarchyRequestError", () => text.before("", contentDocument.documentElement)); |
| assert_true(reactionRan); |
| }, "Reaction must run even after the exception is thrown"); |
| </script> |
