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<title>Test the decodeAudioData Errors</title>
<script src="/tests/SimpleTest/SimpleTest.js"></script>
<link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
<script src="webaudio.js"></script>
<pre id="test">
<script class="testbody" type="text/javascript">
addLoadEvent(function() {
var finished = 0;
var ctx = new AudioContext();
function errorExpectedWithFile(file, errorMsg) {
var xhr = new XMLHttpRequest();
function test(e) {
ok(e instanceof DOMException,
"The exception should be an instance of DOMException");
ok( == "EncodingError",
"The exception name should be EncodingError");
ok(e.message == errorMsg,
"The exception message is not the one intended.\n" +
"\tExpected : " + errorMsg + "\n" +
"\tGot : " + e.message );
}"GET", file, true);
xhr.responseType = "arraybuffer";
xhr.onload = function() {
ctx.decodeAudioData(xhr.response, buffer => {
ok(false, "You should not be able to decode that");
}, e => test(e))
.then(buffer => {
ok(false, "You should not be able to decode that");
.catch(e => test(e));
function finish() {
if (++finished == 4) {
// Unknown Content
errorExpectedWithFile("404", "The buffer passed to decodeAudioData contains an unknown content type.");
// Invalid Content
errorExpectedWithFile("invalidContent.flac", "The buffer passed to decodeAudioData contains invalid content which cannot be decoded successfully.");
// No Audio
// Think about increasing the finish counter to 6 when activating this line
// errorExpectedWithFile("noaudio.webm", "The buffer passed to decodeAudioData does not contain any audio.");
// Unknown Error
// errorExpectedWithFile("There is no file we can't handle", "An unknown error occurred while processing decodeAudioData.");