test_play_promise_14.html (2220B)
1 <!DOCTYPE HTML> 2 <html> 3 <head> 4 <title>Media test: promise-based play() method</title> 5 <script src="/tests/SimpleTest/SimpleTest.js"></script> 6 <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" /> 7 <script type="text/javascript" src="manifest.js"></script> 8 </head> 9 <body> 10 <pre id="test"> 11 12 <script> 13 // Name: loadAlgorithmKeepPromisesPendingWhenNotPausing 14 // Case: step1: create an element with its paused member to be fause and networkState to be NETWORK_EMPTY. 15 // stpe2: invoke load() on the element and the load() leaves the promise pending. 16 // Expected result: the pending promise should finally be resolved. 17 18 let manager = new MediaTestManager; 19 20 function initTest(test, token) { 21 manager.started(token); 22 23 let element = document.createElement(getMajorMimeType(test.type)); 24 // Invoke play() -> (1) the promise will be left pending. 25 // (2) invoke load() -> (1) set the networkState to be NETWORK_NO_SOURCE. 26 // (2) queue a task to run resouce selection algorithm. 27 element.play().then( 28 (result) => { 29 if (result == undefined) { 30 ok(true, `${token} is resolved with ${result}.`); 31 } else { 32 ok(false, `${token} is resolved with ${result}.`); 33 } 34 }, 35 (error) => { 36 ok(false, `${token} is rejected with ${error.name}.`); 37 } 38 ).then( () => { manager.finished(token); } ); 39 40 once(element, "play").then(() => { 41 // The resouce selection algorithm has been done. 42 // -> set the networkState to be NETWORK_EMPTY because there is no valid resource to load. 43 ok(element.networkState == HTMLMediaElement.NETWORK_EMPTY); 44 45 // Invoke load() again and since the networkState is NETWORK_EMPTY, the load() does not reject the pending promise. 46 // The load() will queue a task to run resouce selection algorithm which will change the readyState and finally resolve the pending promise. 47 element.src = test.name; 48 49 // Since the networkState is NETWORK_EMPTY, the load() does not set paused to be true. 50 ok(!element.paused, `loadAlgorithmKeepPromisesPendingWhenNotPausing(${token}).paused should be false.`); 51 }); 52 } 53 54 manager.runTests(gSmallTests, initTest); 55 56 </script>