third_party/WebKit/LayoutTests/webaudio/dynamicscompressor-basic.html

   1 <!DOCTYPE html>
   2
   3 <html>
   4 <head>
   5 <script src="../resources/js-test.js"></script>
   6 <script src="resources/compatibility.js"></script>
   7 <script type="text/javascript" src="resources/audio-testing.js"></script>
   8 </head>
   9
  10 <body>
  11 <div id="description"></div>
  12 <div id="console"></div>
  13
  14 <script>
  15 description("Basic tests for DynamicsCompressorNode API.");
  16
  17 var context;
  18 var compressor;
  19
  20 function runTest() {
  21     if (window.testRunner) {
  22         testRunner.dumpAsText();
  23         testRunner.waitUntilDone();
  24     }
  25
  26     window.jsTestIsAsync = true;
  27
  28     context = new AudioContext();
  29     compressor = context.createDynamicsCompressor();
  30
  31     try {
  32         if (compressor.threshold.value == -24)
  33             testPassed("threshold attribute has correct default value.");
  34         else
  35             testFailed("threshold attribute has incorrect default value.");
  36
  37         if (compressor.knee.value == 30)
  38             testPassed("knee attribute has correct default value.");
  39         else
  40             testFailed("knee attribute has incorrect default value.");
  41
  42         if (compressor.ratio.value == 12)
  43             testPassed("ratio attribute has correct default value.");
  44         else
  45             testFailed("ratio attribute has incorrect default value.");
  46
  47         if (compressor.attack.value - 0.003 < 3e-8)
  48             testPassed("attack attribute has correct default value.");
  49         else
  50             testFailed("attack attribute has incorrect default value.");
  51
  52         if (compressor.release.value - 0.25 < 3e-8)
  53             testPassed("release attribute has correct default value.");
  54         else
  55             testFailed("release attribute has incorrect default value.");
  56
  57     } catch(e) {
  58         testFailed("Exception thrown when accessing DynamicsCompressorNode attributes.");
  59     }
  60
  61     finishJSTest();
  62 }
  63
  64 runTest();
  65
  66 </script>
  67
  68 </body>
  69 </html>