<!DOCTYPE html>
<html>
  <head>
    <title>
      audiobuffer.html
    </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 sampleRate = 44100.0
      let lengthInSeconds = 2;
      let numberOfChannels = 4;

      let audit = Audit.createTaskRunner();

      audit.define('Basic tests for AudioBuffer', function(task, should) {
        let context = new AudioContext();
        let buffer = context.createBuffer(
            numberOfChannels, sampleRate * lengthInSeconds, sampleRate);

        // Just for printing out a message describing what "buffer" is in the
        // following tests.
        should(
            true,
            'buffer = context.createBuffer(' + numberOfChannels + ', ' +
                (sampleRate * lengthInSeconds) + ', ' + sampleRate + ')')
            .beTrue();

        should(buffer.sampleRate, 'buffer.sampleRate').beEqualTo(sampleRate);

        should(buffer.length, 'buffer.length')
            .beEqualTo(sampleRate * lengthInSeconds);

        should(buffer.duration, 'buffer.duration').beEqualTo(lengthInSeconds);

        should(buffer.numberOfChannels, 'buffer.numberOfChannels')
            .beEqualTo(numberOfChannels);

        for (let index = 0; index < buffer.numberOfChannels; ++index) {
          should(
              buffer.getChannelData(index) instanceof window.Float32Array,
              'buffer.getChannelData(' + index +
                  ') instanceof window.Float32Array')
              .beTrue();
        }

        should(
            function() {
              buffer.getChannelData(buffer.numberOfChannels);
            },
            'buffer.getChannelData(' + buffer.numberOfChannels + ')')
            .throw(DOMException, 'IndexSizeError');

        let buffer2 = context.createBuffer(1, 1000, 24576);
        let expectedDuration = 1000 / 24576;

        should(
            buffer2.duration, 'context.createBuffer(1, 1000, 24576).duration')
            .beEqualTo(expectedDuration);

        task.done();
      });

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