third_party/WebKit/LayoutTests/webaudio/audioparam-exceptional-values.html

   1 <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
   2 <html>
   3   <head>
   4     <script src="resources/compatibility.js"></script>
   5     <script src="../resources/js-test.js"></script>
   6   </head>
   7
   8   <body>
   9     <script>
  10       description("Test exceptional arguments for AudioParam timeline events");
  11
  12       var context;
  13       var gain;
  14
  15       // For these values, AudioParam methods should throw an error because they are invalid; only
  16       // finite values are allowed.
  17       var targetValues = [Infinity, -Infinity, NaN];
  18
  19       // For these time values, AudioParam methods should throw an error because they are
  20       // invalid. Only finite non-negative values are allowed for any time or time-like parameter.
  21       var timeValues = [-1, Infinity, -Infinity, NaN];
  22
  23       // For these duration values, AudioParam methods should throw an error because they are
  24       // invalid. Only finite values are allowed for any duration parameter.
  25       var durationValues = [-1, Infinity, -Infinity, NaN, 0];
  26
  27       // Just an array for use by setValueCurveAtTime. The length and contents of the array are not
  28       // important.
  29       var curve = new Float32Array(10);
  30
  31       function runTest() {
  32         if (window.testRunner) {
  33             testRunner.dumpAsText();
  34             testRunner.waitUntilDone();
  35         }
  36         window.jsTestIsAsync = true;
  37
  38         context = new AudioContext();
  39         gain = context.createGain();
  40
  41         // Test the value parameter
  42         for (value of targetValues) {
  43           shouldThrow("gain.gain.setValueAtTime(" + value + ", 1)");
  44           shouldThrow("gain.gain.linearRampToValueAtTime(" + value + ", 1)");
  45           shouldThrow("gain.gain.exponentialRampToValueAtTime(" + value + ", 1)");
  46           shouldThrow("gain.gain.setTargetAtTime(" + value + ", 1, 1)");
  47         }
  48
  49         // Test the time parameter
  50         for (startTime of timeValues) {
  51           shouldThrow("gain.gain.setValueAtTime(1, " + startTime + ")");
  52           shouldThrow("gain.gain.linearRampToValueAtTime(1, " + startTime + ")");
  53           shouldThrow("gain.gain.exponentialRampToValueAtTime(1, " + startTime + ")");
  54           shouldThrow("gain.gain.setTargetAtTime(1, " + startTime + ", 1)");
  55         }
  56
  57         // Test time constant
  58         for (value of targetValues) {
  59           shouldThrow("gain.gain.setTargetAtTime(1, 1, " + value + ")");
  60         }
  61
  62         // Test startTime and duration for setValueCurveAtTime
  63         for (startTime of timeValues) {
  64           shouldThrow("gain.gain.setValueCurveAtTime(curve, " + startTime + ", 1)");
  65         }
  66         for (duration of durationValues) {
  67           shouldThrow("gain.gain.setValueCurveAtTime(curve, 1, " + duration + ")");
  68         }
  69
  70         finishJSTest();
  71       }
  72
  73       runTest();
  74       successfullyParsed = true;
  75     </script>
  76   </body>
  77 </html>