audiobuffer.html - mozsearch

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This WPT test may be referenced by the following Test IDs:
- /webaudio/the-audio-api/the-audiobuffer-interface/audiobuffer.html - WPT Dashboard Interop Dashboard

<!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>