| <!DOCTYPE html> |
| <title>Access to the Background Sync 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 |
| // periodicSync.register() 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: 'periodic-background-sync'}, 'granted'); |
| |
| // Install the service worker first to test periodicSync.register 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/background-sync.https.html?uid=${uid}`; |
| window.open(url, '_blank', 'noopener'); |
| |
| const result = await gotMessage; |
| const expected = [ |
| {event: 'started waiting periodicSync.register', prerendering: true}, |
| {event: 'prerendering change', prerendering: false}, |
| {event: 'finished waiting periodicSync.register', prerendering: false}, |
| ]; |
| assert_equals(result.length, expected.length); |
| for (let i = 0; i < result.length; i++) { |
| assert_equals(result[i].event, expected[i].event, `event[${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 Background Sync API should be deferred until the |
| prerendered page is activated`); |
| |
| </script> |
| </body> |