<!DOCTYPE html> <title>Access to the Push API is deferred</title> <meta name="timeout" content="long"> <script src="/resources/testharness.js"></script> <script src="/resources/testharnessreport.js"></script> <script src="/resources/testdriver.js"></script> <script src="/resources/testdriver-vendor.js"></script> <script src="/common/utils.js"></script> <script src="/service-workers/service-worker/resources/test-helpers.sub.js"></script> <script src="/speculation-rules/prerender/resources/utils.js"></script> <body> <script> setup(() => assertSpeculationRulesIsSupported()); promise_test(async t => { const uid = token(); const bc = new PrerenderChannel('test-channel', uid); t.add_cleanup(_ => bc.close()); const gotMessage = new Promise(resolve => { bc.addEventListener('message', e => { resolve(e.data); }, { once: true }); }); // We grant the permission here to make a more discerning test because // pushManager.subscribe() waits until the permission is granted, which // is deferred during prerendering so the test would trivially pass without // the permission. await test_driver.set_permission({ name: 'push', userVisibleOnly: true }, 'granted'); // Install the service worker first to test pushManager.subscribe in the // prerendering page. const scope = `resources/`; const script = `resources/do-nothing-worker.js`; const registration = await service_worker_unregister_and_register(t, script, scope); t.add_cleanup(() => registration.unregister()); await wait_for_state(t, registration.installing, 'activated'); const url = `resources/push.https.html?uid=${uid}`; window.open(url, '_blank', 'noopener'); const result = await gotMessage; const expected = [ {event: 'started waiting pushManager.subscribe', prerendering: true}, {event: 'prerendering change', prerendering: false}, {event: 'finished waiting pushManager.subscribe', prerendering: false}, ]; assert_equals(result.length, expected.length); for (let i = 0; i < result.length; i++) { assert_equals(result[i].event, expected[i].event, `event[${i}]`); assert_equals(result[i].prerendering, expected[i].prerendering, `prerendering[${i}]`); } // Send a close signal to PrerenderEventCollector on the prerendered page. new PrerenderChannel('close', uid).postMessage(''); }, `The access to the Push API should be deferred until the prerendered page is activated`); </script> </body>