<!DOCTYPE HTML> <html> <head> <title>Media test: promise-based play() method</title> <script src="/tests/SimpleTest/SimpleTest.js"></script> <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" /> <script type="text/javascript" src="manifest.js"></script> </head> <body> <pre id="test"> <script> // Name: 'playing' event should come before promise resolving // Case: invoke play() on an element which has valis source // Expected result: receive a 'playing' event before the promise is resolved let manager = new MediaTestManager; function initTest(test, token) { manager.started(token); let element = document.createElement(getMajorMimeType(test.type)); element.src = test.name; element.receivedPlayingEvent = false; element.addEventListener("playing", () => { element.receivedPlayingEvent = true; }); element.play().then( (result) => { if (result == undefined && element.receivedPlayingEvent) { ok(true, `${token} is resolved with ${result}.`); } else { ok(false, `${token} is resolved with ${result} and receivedPlayingEvent = ${element.receivedPlayingEvent}`); } }, (error) => { ok(false, `${token} is rejected with ${error.name}.`); } ).then( () => { manager.finished(token); } ); } manager.runTests(gSmallTests, initTest); </script>