| <!doctype html> |
| <html> |
| <title>List of available images tuple-matching logic</title> |
| <link rel="author" title="Dom Farolino" href="mailto:dom@chromium.org"> |
| <link rel="help" href="https://html.spec.whatwg.org/multipage/#the-list-of-available-images"> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <script src="/service-workers/service-worker/resources/test-helpers.sub.js"></script> |
| <script src="/common/get-host-info.sub.js"></script> |
| |
| <script> |
| const path = location.origin + '/html/semantics/embedded-content/the-img-element/'; |
| const image_url = path + 'image-1.jpg'; |
| |
| function syncWait(ms) { |
| const start = Date.now(); |
| while (Date.now() - start < ms); |
| } |
| |
| let sawNoCorsRequest = false; |
| |
| navigator.serviceWorker.onmessage = ({data}) => { |
| if (data.url === image_url && data.mode === 'no-cors') { |
| sawNoCorsRequest = true; |
| } |
| }; |
| |
| promise_test(t => { |
| return service_worker_unregister_and_register(t, 'resources/sw.js', path) |
| .then(r => { |
| return wait_for_state(t, r.installing, 'activated'); |
| }); |
| }, 'registering service worker'); |
| |
| promise_test(async t => { |
| const img = new Image(); |
| |
| function load_img_promise() { |
| return new Promise((resolve, reject) => { |
| img.onload = resolve; |
| img.onerror = e => { reject("The img should not fail to load") }; |
| |
| img.src = image_url; |
| // If there is not a matching image in the list of available images, the |
| // actual fetch operation is queued as a microtask, so we will see a |
| // request with mode 'cors' due to setting the crossorigin attribute |
| // below. |
| syncWait(500); |
| img.crossOrigin = 'anonymous'; |
| }); |
| }; |
| |
| await load_img_promise(); |
| assert_false(sawNoCorsRequest, "The image is not fetched with mode: no-cors"); |
| await new Promise(resolve => { |
| img.onload = img.onerror = resolve; |
| img.src = ''; |
| img.crossOrigin = null; |
| }); |
| await load_img_promise(); |
| assert_false(sawNoCorsRequest, "The image is not fetched with mode: no-cors"); |
| |
| }, 'list of available images tuple-matching logic'); |
| |
| promise_test(t => { |
| return service_worker_unregister(t, path); |
| }, 'unregistering service worker'); |
| </script> |
