| <!-- webkit-test-runner [ MoveBeforeEnabled=true ] --> |
| <!DOCTYPE html> |
| <html> |
| <body> |
| <section id="section"></section> |
| <script src="../../resources/js-test.js"></script> |
| <script> |
| description('Tests that connectedMoveCallback is kept alive by the garbage collector. The callback is stored as a JSC::Weak, so JSCustomElementInterface::visitJSFunctionsInGCThread() must visit it. Otherwise it is collected once removed from the prototype, and moveBefore() fires disconnected/connected instead of connectedMove.'); |
| |
| jsTestIsAsync = true; |
| |
| let reactions = []; |
| |
| class MoveElement extends HTMLElement { |
| connectedMoveCallback() { reactions.push('connectedMove'); } |
| connectedCallback() { reactions.push('connected'); } |
| disconnectedCallback() { reactions.push('disconnected'); } |
| } |
| customElements.define('move-element', MoveElement); |
| |
| // Leave m_connectedMoveCallback as the function's only reference, so it survives GC only if visited. |
| delete MoveElement.prototype.connectedMoveCallback; |
| |
| const element = document.createElement('move-element'); |
| document.body.appendChild(element); |
| |
| (async () => { |
| await Promise.resolve(); |
| reactions = []; |
| |
| gc(); |
| |
| document.getElementById('section').moveBefore(element, null); |
| await Promise.resolve(); |
| |
| shouldBeEqualToString('reactions.join()', 'connectedMove'); |
| finishJSTest(); |
| })(); |
| </script> |
| </body> |
| </html> |
