third_party/WebKit/LayoutTests/webaudio/audiobuffersource-channels.html

   1 <!DOCTYPE html>
   2
   3 <html>
   4 <head>
   5 <script src="../resources/js-test.js"></script>
   6 <script type="text/javascript" src="resources/audio-testing.js"></script>
   7 <script src="resources/compatibility.js"></script>
   8 </head>
   9
  10 <body>
  11 <div id="description"></div>
  12 <div id="console"></div>
  13
  14 <script>
  15 description("Tests that AudioBufferSourceNode validates AudioBuffer in .buffer attribute setter.");
  16
  17 var context;
  18 var source;
  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     source = context.createBufferSource();
  30
  31     // Make sure we can't set to something which isn't an AudioBuffer.
  32     shouldThrow("source.buffer = 57", '"TypeError: Failed to set the \'buffer\' property on \'AudioBufferSourceNode\': The provided value is not of type \'AudioBuffer\'."');
  33     shouldThrow("source.buffer = null", '"TypeError: Failed to set the \'buffer\' property on \'AudioBufferSourceNode\': The provided value is not of type \'AudioBuffer\'."');
  34
  35     // Check that mono buffer can be set.
  36     try {
  37         var monoBuffer = context.createBuffer(1, 1024, context.sampleRate);
  38         var testSource = context.createBufferSource();
  39         testSource.buffer = monoBuffer;
  40         testPassed("Mono buffer can be set.");
  41     } catch(e) {
  42         testFailed("Mono buffer can not be set.");
  43     }
  44
  45     // Check that stereo buffer can be set.
  46     try {
  47         var stereoBuffer = context.createBuffer(2, 1024, context.sampleRate);
  48         var testSource = context.createBufferSource();
  49         testSource.buffer = stereoBuffer;
  50         testPassed("Stereo buffer can be set.");
  51     } catch(e) {
  52         testFailed("Stereo buffer can not be set.");
  53     }
  54
  55     // Check buffers with more than two channels.
  56     for (var i = 3; i < 10; ++i) {
  57         try {
  58             var buffer = context.createBuffer(i, 1024, context.sampleRate);
  59             var testSource = context.createBufferSource();
  60             testSource.buffer = buffer;
  61             var message = i + " channels buffer can be set.";
  62             testPassed(message);
  63         } catch(e) {
  64             var message = i + " channels buffer can not be set.";
  65             testFailed(message);
  66         }
  67     }
  68
  69     finishJSTest();
  70 }
  71
  72 runTest();
  73
  74 </script>
  75
  76 </body>
  77 </html>