| <!DOCTYPE html> |
| <script src="../../resources/gc.js"></script> |
| <script src="../../resources/js-test.js"></script> |
| <script src="resources/shared.js"></script> |
| <script> |
| |
| description("Verify that that requests weakly hold script value properties"); |
| |
| if (window.internals) { |
| indexedDBTest(prepareDatabase, onOpen); |
| } else { |
| testFailed('This test requires access to the Internals object'); |
| finishJSTest(); |
| } |
| |
| function prepareDatabase(evt) |
| { |
| preamble(evt); |
| evalAndLog("db = event.target.result"); |
| evalAndLog("store = db.createObjectStore('store')"); |
| evalAndLog("store.put({value: 'value'}, 'key')"); |
| } |
| |
| function onOpen(evt) |
| { |
| preamble(evt); |
| evalAndLog("db = event.target.result"); |
| evalAndLog("tx = db.transaction('store')"); |
| evalAndLog("store = tx.objectStore('store')"); |
| evalAndLog("request = store.get('key')"); |
| tx.oncomplete = function onTransactionComplete() { |
| preamble(); |
| evalAndLog("db.close()"); |
| shouldBeEqualToString("typeof request.result", "object"); |
| |
| // Verify that the same object is returned on each access to request.result. |
| evalAndLog("request.result.x = 123"); |
| shouldBe("request.result.x", "123"); |
| |
| // Try and induce a leak by a reference cycle from DOM to V8 and back. |
| // If the v8 value of request.result (etc) is only held by the requests's |
| // V8 wrapper then there will be no leak. |
| evalAndLog("request.result.leak = request"); |
| evalAndLog("observer = internals.observeGC(request)"); |
| evalAndLog("request = null"); |
| asyncGC(function () { |
| shouldBeTrue("observer.wasCollected"); |
| finishJSTest(); |
| }); |
| }; |
| } |
| |
| |
| </script> |
