restriction-media-capabilities-decoding-info.https.html (1870B)
1 <!DOCTYPE html> 2 <title>MediaCapabilities decodingInfo API is not deferred</title> 3 <meta name="variant" content="?target_hint=_self"> 4 <meta name="variant" content="?target_hint=_blank"> 5 <meta name="timeout" content="long"> 6 <script src="/resources/testharness.js"></script> 7 <script src="/resources/testharnessreport.js"></script> 8 <script src="/resources/testdriver.js"></script> 9 <script src="/resources/testdriver-vendor.js"></script> 10 <script src="/common/utils.js"></script> 11 <script src="../resources/utils.js"></script> 12 <script src="resources/utils.js"></script> 13 14 <body> 15 <script> 16 setup(() => assertSpeculationRulesIsSupported()); 17 18 promise_test(async t => { 19 const uid = token(); 20 const bc = new PrerenderChannel('test-channel', uid); 21 t.add_cleanup(_ => bc.close()); 22 23 const gotMessage = new Promise(resolve => { 24 bc.addEventListener('message', e => { 25 resolve(e.data); 26 }, { 27 once: true 28 }); 29 }); 30 const url = `resources/media-capabilities-decoding-info.https.html?uid=${uid}&target_hint=${getTargetHint()}`; 31 window.open(url, '_blank', 'noopener'); 32 33 const result = await gotMessage; 34 const expected = [ 35 { 36 event: 'started waiting navigator.mediaCapabilities.decodingInfo', 37 prerendering: true 38 }, 39 { 40 event: 'finished waiting navigator.mediaCapabilities.decodingInfo', 41 prerendering: true 42 }, 43 ]; 44 assert_equals(result.length, expected.length); 45 for (let i = 0; i < result.length; i++) { 46 assert_equals(result[i].event, expected[i].event, `event[${i}]`); 47 assert_equals(result[i].prerendering, expected[i].prerendering, 48 `prerendering[${i}]`); 49 } 50 51 // Send a close signal to PrerenderEventCollector on the prerendered page. 52 new PrerenderChannel('close', uid).postMessage(''); 53 }, `The access to the MediaCapabilities decodingInfo API should be granted 54 during prerendering`); 55 </script>