test_play_promise_18.html

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<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>