test_decodeAudioDataPromise.html

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<!DOCTYPE HTML>

<html>

<head>

  <title>Test the decodeAudioData API with Promise</title>

  <script src="/tests/SimpleTest/SimpleTest.js"></script>

  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />

  <script src="webaudio.js"></script>

</head>

<body>

<pre id="test">

<script class="testbody" type="text/javascript">

SimpleTest.waitForExplicitFinish();

addLoadEvent(function() {

var finished = 0;

function finish() {

  if (++finished == 2) {

    SimpleTest.finish();

var ac = new AudioContext();

// Test that a the promise is rejected with an invalid source buffer.

expectNoException(function() {

  var p = ac.decodeAudioData(" ");

  ok(p instanceof Promise, "AudioContext.decodeAudioData should return a Promise");

  p.then(function() {

    ok(false, "Promise should not resolve with an invalid source buffer.");

    finish();

  }).catch(function(e) {

    ok(true, "Promise should be rejected with an invalid source buffer.");

    ok(e.name == "TypeError", "The error should be TypeError");

    finish();

})

});

// Test that a the promise is resolved with a valid source buffer.

var xhr = new XMLHttpRequest();

xhr.open("GET", "ting-44.1k-1ch.ogg", true);

xhr.responseType = "arraybuffer";

xhr.onload = function() {

  var p = ac.decodeAudioData(xhr.response);

  ok(p instanceof Promise, "AudioContext.decodeAudioData should return a Promise");

  p.then(function(data) {

    ok(data instanceof AudioBuffer, "Promise should resolve, passing an AudioBuffer");

    ok(true, "Promise should resolve with a valid source buffer.");

    finish();

  }).catch(function() {

    ok(false, "Promise should not be rejected with a valid source buffer.");

    finish();

});

};

xhr.send();

});

</script>

</pre>

</body>

</html>