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

   1 <!DOCTYPE html>
   2 <html>
   3
   4 <head>
   5   <script src="../resources/js-test.js"></script>
   6   <script src="resources/compatibility.js"></script>
   7   <script src="resources/audio-testing.js"></script>
   8 </head>
   9
  10 <body>
  11   <script>
  12     description("Basic tests for ChannelMerger.");
  13     window.jsTestIsAsync = true;
  14
  15     var audit = Audit.createTaskRunner();
  16
  17     // Task: Checking constraints in ChannelMergerNode.
  18     audit.defineTask('exceptions-channels', function (done) {
  19       var context = new OfflineAudioContext(2, 128, 44100);
  20       var merger;
  21
  22       Should('context.createChannelMerger()', function () {
  23         merger = context.createChannelMerger();
  24       }).notThrow();
  25
  26       Should('context.createChannelMerger(0)', function () {
  27         merger = context.createChannelMerger(0);
  28       }).throw('IndexSizeError');
  29
  30       Should('context.createChannelMerger(32)', function () {
  31         merger = context.createChannelMerger(32);
  32       }).notThrow();
  33
  34       // Can't create a channel merger with 33 channels because the audio
  35       // context has a 32-channel-limit in Chrome.
  36       Should('context.createChannelMerger(33)', function () {
  37         merger = context.createChannelMerger(33);
  38       }).throw('IndexSizeError');
  39
  40       done();
  41     });
  42
  43     // Task: checking the channel-related properties have the correct value and
  44     // can't be changed.
  45     audit.defineTask('exceptions-properties', function (done) {
  46       var context = new OfflineAudioContext(2, 128, 44100);
  47       var merger = context.createChannelMerger();
  48
  49       Should('merger.channelCount', merger.channelCount).beEqualTo(1);
  50
  51       Should('merger.channelCount = 3', function () {
  52         merger.channelCount = 3;
  53       }).throw('InvalidStateError');
  54
  55       Should('merger.channelCountMode', merger.channelCountMode).beEqualTo('explicit');
  56
  57       Should('merger.channelCountMode = "max"', function () {
  58         merger.channelCountMode = 'max';
  59       }).throw('InvalidStateError');
  60
  61       done();
  62     });
  63
  64     audit.defineTask('finish', function (done) {
  65       finishJSTest();
  66       done();
  67     });
  68
  69     audit.runTasks(
  70       'exceptions-channels',
  71       'exceptions-properties',
  72       'finish'
  73     );
  74
  75     successfullyParsed = true;
  76   </script>
  77 </body>
  78
  79 </html>