restriction-midi.https.html (2094B)
1 <!DOCTYPE html> 2 <title>Access to the Midi API with sysex=false is deferred</title> 3 <meta name="timeout" content="long"> 4 <script src="/resources/testharness.js"></script> 5 <script src="/resources/testharnessreport.js"></script> 6 <script src="/resources/testdriver.js"></script> 7 <script src="/resources/testdriver-vendor.js"></script> 8 <script src="/common/utils.js"></script> 9 <script src="../resources/utils.js"></script> 10 <script src="resources/utils.js"></script> 11 12 <body> 13 <script> 14 setup(() => assertSpeculationRulesIsSupported()); 15 16 promise_test(async t => { 17 const uid = token(); 18 const bc = new PrerenderChannel('test-channel', uid); 19 t.add_cleanup(_ => bc.close()); 20 21 // Grant the permission here to make a more discerning test because 22 // navigator.requestMIDIAccess() waits until the permission is granted, which 23 // is deferred during prerendering so the test would trivially pass without 24 // the permission. 25 await test_driver.set_permission( 26 {name: 'midi', sysex: false}, 'granted'); 27 28 const gotMessage = new Promise(resolve => { 29 bc.addEventListener('message', e => { 30 resolve(e.data); 31 }, { 32 once: true 33 }); 34 }); 35 const url = `resources/midi.https.html?sysex=false&uid=${uid}`; 36 window.open(url, '_blank', 'noopener'); 37 38 const result = await gotMessage; 39 const expected = [ 40 { 41 event: 'started waiting navigator.requestMIDIAccess', 42 prerendering: true 43 }, 44 { 45 event: 'prerendering change', 46 prerendering: false 47 }, 48 { 49 event: 'finished waiting navigator.requestMIDIAccess', 50 prerendering: false 51 }, 52 ]; 53 assert_equals(result.length, expected.length); 54 for (let i = 0; i < result.length; i++) { 55 assert_equals(result[i].event, expected[i].event, `event${i}`); 56 assert_equals(result[i].prerendering, expected[i].prerendering, 57 `prerendering${i}`); 58 } 59 60 // Send a close signal to PrerenderEventCollector on the prerendered page. 61 new PrerenderChannel('close', uid).postMessage(''); 62 }, `the access to the Midi API should be deferred until the prerendered page is 63 activated`); 64 </script>