| 'use strict'; |
| |
| let nextBackgroundFetchId = 0; |
| |
| // Waits for a single message received from a registered Service Worker. |
| async function getMessageFromServiceWorker() { |
| return new Promise(resolve => { |
| function listener(event) { |
| navigator.serviceWorker.removeEventListener('message', listener); |
| resolve(event.data); |
| } |
| |
| navigator.serviceWorker.addEventListener('message', listener); |
| }); |
| } |
| |
| // Registers the |name| instrumentation Service Worker located at "service_workers/" |
| // with a scope unique to the test page that's running, and waits for it to be |
| // activated. The Service Worker will be unregistered automatically. |
| // |
| // Depends on /service-workers/service-worker/resources/test-helpers.sub.js |
| async function registerAndActivateServiceWorker(test, name) { |
| const script = `service_workers/${name}`; |
| const scope = 'service_workers/scope' + location.pathname; |
| |
| let serviceWorkerRegistration = |
| await service_worker_unregister_and_register(test, script, scope); |
| |
| add_completion_callback(() => serviceWorkerRegistration.unregister()); |
| |
| await wait_for_state(test, serviceWorkerRegistration.installing, 'activated'); |
| return serviceWorkerRegistration; |
| } |
| |
| // Creates a Promise test for |func| given the |description|. The |func| will be |
| // executed with the `backgroundFetch` object of an activated Service Worker |
| // Registration. |
| // |workerName| is the name of the service worker file in the service_workers |
| // directory to register. |
| function backgroundFetchTest(func, description, workerName = 'sw.js') { |
| promise_test(async t => { |
| const serviceWorkerRegistration = |
| await registerAndActivateServiceWorker(t, workerName); |
| serviceWorkerRegistration.active.postMessage(null); |
| |
| assert_equals(await getMessageFromServiceWorker(), 'ready'); |
| |
| return func(t, serviceWorkerRegistration.backgroundFetch); |
| }, description); |
| } |
| |
| // Returns a Background Fetch ID that's unique for the current page. |
| function uniqueId() { |
| return 'id' + nextBackgroundFetchId++; |
| } |