| <!DOCTYPE html> |
| <meta charset="utf-8"> |
| <title>FetchEvent with Navigation Preload after GC shouldn't cause crash</title> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <script src="../resources/test-helpers.js"></script> |
| <script> |
| |
| // This test simulates the following situation: |
| // 1. The browser process sends the navigation preload request to the server. |
| // 2. In SW's FetchEvent handler: |
| // 2.1 Executes GC with internals.collectGarbage(). |
| // 2.2 Returns a dummy response "hello". |
| // 3. The server sleeps 100 ms. So the browser process cancels the navigation |
| // preload request when it recieves the response from the SW. |
| // 4. Retry 1, 2 and 3 again. |
| // Before https://crbug.com/702527#c9, |m_pendingPreloadFetchEvents| of |
| // ServiceWorkerGlobalScopeProxy is accidentally cleared in the GC. So the SW |
| // crashed when it receives the fetch event with preload request again in step 4 |
| // while inserting the fetch into |m_pendingPreloadFetchEvents|. |
| promise_test(t => { |
| var script = 'resources/navigation-preload-after-gc-worker.js'; |
| var scope = 'resources/navigation-preload-after-gc-scope.php'; |
| return service_worker_unregister_and_register(t, script, scope) |
| .then(registration => { |
| add_completion_callback(_ => registration.unregister()); |
| var worker = registration.installing; |
| return wait_for_state(t, worker, 'activated'); |
| }) |
| .then(_ => with_iframe(scope)) |
| .then(frame => { |
| assert_equals(frame.contentWindow.document.body.innerText, 'hello'); |
| }) |
| .then(_ => with_iframe(scope)) |
| .then(frame => { |
| assert_equals(frame.contentWindow.document.body.innerText, 'hello'); |
| }); |
| }, 'Navigation Preload is not counted if not enabled.'); |
| |
| </script> |
