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<!DOCTYPE HTML>
<html>
<head>
<title>Bug 1395022 - MediaRecorder fires start event when erroring.</title>
<script src="/tests/SimpleTest/SimpleTest.js"></script>
<link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
</head>
<body>
<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1395022">Mozilla Bug 1395022</a>
<pre id="test">
<script class="testbody" type="text/javascript">
function startTest() {
let audioContext = new AudioContext();
let destination1 = audioContext.createMediaStreamDestination();
let oscilator = audioContext.createOscillator();
oscilator.connect(destination1);
oscilator.start();
let destination2 = audioContext.createMediaStreamDestination();
let rec = new MediaRecorder(destination1.stream);
let numStartEvents = 0;
rec.onstart = () => {
numStartEvents += 1;
is(numStartEvents, 1, "One start event should be fired by the recorder");
// Trigger an error in the recorder
destination1.stream.addTrack(destination2.stream.getTracks()[0]);
};
rec.onerror = () => {
is(numStartEvents, 1, "One start event should have been fired by the recorder");
SimpleTest.finish();
};
rec.start();
}
SimpleTest.waitForExplicitFinish();
startTest();
</script>
</head>
</html>
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