<!DOCTYPE html>

<html>
<head>
<script src="../resources/js-test.js"></script>
<script src="resources/compatibility.js"></script>
<script src="resources/audio-testing.js"></script>
</head>

<body>
<div id="description"></div>
<div id="console"></div>

<script>
description("Test that re-sizing the FFT arrays does not fail.");

if (window.testRunner) {
    testRunner.dumpAsText();
    testRunner.waitUntilDone();
}

var doTest = function(fftSize, illegal) {
    var c = new OfflineAudioContext(1, 1000, 44100);
    var a = c.createAnalyser();
    try {
        a.fftSize = fftSize;
        if (illegal)
           testFailed("No exception thrown for illegal fftSize " + fftSize + ".");
        else
           testPassed("Successfully set legal fftSize " +  fftSize + ".");
    } catch(e) {
        testPassed("Exception thrown for illegal fftSize " + fftSize + ".");
    }
    // This arbitrary size does not affect the correctness of the test.
    var arr = new Float32Array(100);
    a.getFloatFrequencyData(arr);
}

doTest(-1, true);
doTest(0, true);
doTest(1, true);
for (var i = 2; i <= 0x20000; i *= 2) {
	if (i >= 32 && i <= 32768)
        doTest(i, false);
    else
        doTest(i, true);
    doTest(i + 1, true);
}

if (window.testRunner)
    testRunner.notifyDone();
testPassed("AudioContext survived multiple invalid FFT array resizings.");
</script>

</body>
</html>