| <!DOCTYPE html> |
| <title>Test Prerender pages maintain their own Client Hint Caches</title> |
| <meta name="timeout" content="long"> |
| <script src="/common/utils.js"></script> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <script src="/client-hints/resources/open-and-add-load-event.js"></script> |
| <script src="../resources/utils.js"></script> |
| <script src="resources/utils.js"></script> |
| |
| <body> |
| <script> |
| setup(() => assertSpeculationRulesIsSupported()); |
| |
| promise_test( |
| async t => { |
| const uid = token(); |
| const initialization_bc = new PrerenderChannel(`test-channel`, uid); |
| t.add_cleanup(_ => initialization_bc.close()); |
| |
| const gotMessage = new Promise(resolve => { |
| initialization_bc.addEventListener('message', e => { |
| resolve(e.data); |
| }, {once: true}); |
| }); |
| |
| // Initialization. For the active pages, it has the client hint cache of |
| // "sec-ch-ua-bitness". |
| await open_and_add_load_event('resources/accept-ch.html'); |
| window.open( |
| `resources/echo-client-hints-received.py?uid=${uid}`, '_blank', |
| 'noopener'); |
| |
| const result = await gotMessage; |
| assert_equals(result.result, 'PASSED', result.reason); |
| }, |
| 'Prerender page should maintain their own client hints cache and do not propagate it to' + |
| 'the global cache until activation'); |
| |
| </script> |
