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