File: audiobuffersource-one-sample-loop.html

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<!DOCTYPE html>
<html>
  <head>
    <title>
      Test AudioBufferSourceNode With Looping a Single-Sample Buffer
    </title>
    <script src="/resources/testharness.js"></script>
    <script src="/resources/testharnessreport.js"></script>
    <script src="/webaudio/resources/audit-util.js"></script>
    <script src="/webaudio/resources/audit.js"></script>
  </head>
  <body>
    <script id="layout-test-code">
      let audit = Audit.createTaskRunner();

      let sampleRate = 44100;
      let testDurationSamples = 1000;

      audit.define('one-sample-loop', function(task, should) {
        // Create the offline context for the test.
        let context =
            new OfflineAudioContext(1, testDurationSamples, sampleRate);

        // Create the single sample buffer
        let buffer = createConstantBuffer(context, 1, 1);

        // Create the source and connect it to the destination
        let source = context.createBufferSource();
        source.buffer = buffer;
        source.loop = true;
        source.connect(context.destination);
        source.start();

        // Render it!
        context.startRendering()
            .then(function(audioBuffer) {
              should(audioBuffer.getChannelData(0), 'Rendered data')
                  .beConstantValueOf(1);
            })
            .then(task.done.bind(task));
        ;
      });

      audit.run();
    </script>
  </body>
</html>