webaudio/dynamicscompressor-basic.html

<!DOCTYPE html>

<html>
<head>
<script src="../fast/js/resources/js-test-pre.js"></script>
<script type="text/javascript" src="resources/audio-testing.js"></script>
</head>

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

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

var context;
var compressor;

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

    context = new webkitAudioContext();
    compressor = context.createDynamicsCompressor();

    try {
        if (compressor.threshold.value == -24)
            testPassed("threshold attribute has correct default value.");
        else
            testFailed("threshold attribute has incorrect default value.");

        if (compressor.knee.value == 30)
            testPassed("knee attribute has correct default value.");
        else
            testFailed("knee attribute has incorrect default value.");
        
        if (compressor.ratio.value == 12)
            testPassed("ratio attribute has correct default value.");
        else
            testFailed("ratio attribute has incorrect default value.");
        
        if (compressor.attack.value - 0.003 < 3e-8)
            testPassed("attack attribute has correct default value.");
        else
            testFailed("attack attribute has incorrect default value.");

        if (compressor.release.value - 0.25 < 3e-8)
            testPassed("release attribute has correct default value.");
        else
            testFailed("release attribute has incorrect default value.");

    } catch(e) {
        testFailed("Exception thrown when accessing DynamicsCompressorNode attributes.");
    }

    finishJSTest();
}

runTest();

</script>

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