<!doctype html>
<html>
  <head>
    <script src="../resources/js-test.js"></script>
    <script src="resources/compatibility.js"></script>
    <script src="resources/audio-testing.js"></script>
  </head>

  <body>
    <script>
      description('Test promise resolution of OfflineAudioContext.resume() and OfflineAudioContext.suspend().');
      window.jsTestIsAsync = true;

      var context;

      // The sample rate is multiple of the rendering quantum, so suspension
      // times fall in to the render quantum boundary.
      var renderQuantum = 128;

      var sampleRate = renderQuantum * 100;
      var renderDuration = 2;
      var scheduledSuspendTime = 0;

      // With the sample rate setting above, this ensures suspension time fall
      // in to the render quantum boundary.
      var suspendInterval = 0.25;

      context = new OfflineAudioContext(1, sampleRate * renderDuration, sampleRate);

      function onSuspended() {
        if (context.state === 'suspended' && context.currentTime === scheduledSuspendTime) {

          testPassed('suspend promise resolved: context is suspended at ' +
            scheduledSuspendTime + ' second(s).');

          scheduledSuspendTime = context.currentTime + suspendInterval;

          // Scheduling a suspend before the render duration should pass.
          if (scheduledSuspendTime < renderDuration) {
            context.suspend(scheduledSuspendTime).then(onSuspended);
            testPassed('A new suspend has been scheduled at ' +
              scheduledSuspendTime + ' second(s).');
          }

          // Scheduling a suspend exactly at the render duration should be
          // rejected.
          if (scheduledSuspendTime === renderDuration) {
            Should('Scheduling at ' + renderDuration + ' seconds',
              context.suspend(scheduledSuspendTime)).beRejected();
          }

         context.resume();
        }
      }

      // Schedule the first suspension.
      context.suspend(scheduledSuspendTime).then(onSuspended);
      testPassed('A new suspend has been scheduled at ' + scheduledSuspendTime + ' second(s).');

      context.startRendering().then(function () {
        Should('Promise context.state', context.state).beEqualTo('closed');
      }).then(finishJSTest);

      successfullyParsed = true;
    </script>

  </body>
</html>