webaudio/biquadfilternode-basic.html

<!DOCTYPE html>
<html>
<head>
<script src="../fast/js/resources/js-test-pre.js"></script>
<script src="resources/audio-testing.js"></script>
</head>

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

<script>
description("Basic tests for BiquadFilterNode.");

var context = 0;

function runTest() {
    if (window.testRunner) {
        testRunner.dumpAsText();
        testRunner.waitUntilDone();
    }
    
    window.jsTestIsAsync = true;

    context = new webkitAudioContext();
    var filter = context.createBiquadFilter();
   
    if (filter.numberOfInputs === 1) 
        testPassed("BiquadFilterNode has one iutput.");
    else
        testFailed("BiquadFilterNode should have one iutput.");
    
    if (filter.numberOfOutputs === 1) 
        testPassed("BiquadFilterNode has one output.");
    else
        testFailed("BiquadFilterNode should have one output.");
    
    if (filter.type === filter.LOWPASS)
        testPassed("Biquad filter defaults to low-pass filter.");
    else
        testFailed("Biquad filter should default to low-pass filter.");

    // Check that all legal filter types can be set.
    var filterTypeArray = [filter.LOWPASS,
                           filter.HIGHPASS,
                           filter.BANDPASS,
                           filter.LOWSHELF,
                           filter.HIGHSHELF,
                           filter.PEAKING,
                           filter.NOTCH,
                           filter.ALLPASS];

    for (var i = 0; i < filterTypeArray.length; ++i) {
        try {
            filter.type = filterTypeArray[i];
            if (filter.type === filterTypeArray[i] && filterTypeArray[i] === i) {
                var message = "Biquad filter type " + i + " is settable.";
                testPassed(message);
            } else {
                var message = "Biquad filter type " + i + " was not correctly set.";
                testFailed(message);
            }
        } catch(e) {
            var message = "Biquad filter type " + i + " should not throw exception.";
            testFailed(message);
        }
    }

    // Check that illegal filter type throws.
    try {
        filter.type = filter.ALLPASS + 1;
        testFailed("Illegal filter type should throw exception.");
    } catch(e) {
        testPassed("Illegal filter type correctly throws exception.");
    }

    finishJSTest();
}

runTest();

</script>

<script src="../fast/js/resources/js-test-post.js"></script>
</body>
</html>