| <!DOCTYPE HTML> |
| <meta charset=utf-8> |
| <title>Largest Contentful Paint: same-origin service worker should not be treated as TAO-fail</title> |
| |
| <body> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <script src="resources/largest-contentful-paint-helpers.js"></script> |
| <script src="/service-workers/service-worker/resources/test-helpers.sub.js"></script> |
| <script> |
| setup(() => { |
| assert_implements(window.LargestContentfulPaint, "LargestContentfulPaint is not implemented"); |
| }); |
| |
| promise_test(async t => { |
| const scope = "resources/lcp-sw.https.html"; |
| |
| const registration = |
| await service_worker_unregister_and_register(t, "resources/lcp-sw-from-cache.js", "resources/"); |
| |
| await wait_for_state(t, registration.installing, "activated"); |
| t.add_cleanup(() => registration.unregister()); |
| const iframe = document.createElement("iframe"); |
| iframe.src = scope; |
| document.body.appendChild(iframe); |
| t.add_cleanup(() => iframe.remove()); |
| const entry = await new Promise(resolve => window.addEventListener("message", e => resolve(e.data))); |
| |
| assert_equals(entry.id, "theImage"); |
| assert_not_equals(entry.renderTime, 0); |
| }, "Same-origin images served from a service-worker should have a correct renderTime"); |
| </script> |
| </body> |