realtimeanalyser-fft-sizing.html

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

<!DOCTYPE html>

<html>

  <head>

    <title>

      realtimeanalyser-fft-sizing.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 audit = Audit.createTaskRunner();

      function doTest(fftSize, illegal, should) {

        let c = new OfflineAudioContext(1, 1000, 44100);

        let a = c.createAnalyser();

        let message = 'Setting fftSize to ' + fftSize;

        let tester = function() {

          a.fftSize = fftSize;

};

        if (illegal) {

          should(tester, message).throw(DOMException, 'IndexSizeError');

        } else {

          should(tester, message).notThrow();

      audit.define(

            label: 'FFT size test',

            description: 'Test that re-sizing the FFT arrays does not fail.'

},

          function(task, should) {

            doTest(-1, true, should);

            doTest(0, true, should);

            doTest(1, true, should);

            for (let i = 2; i <= 0x20000; i *= 2) {

              if (i >= 32 && i <= 32768)

                doTest(i, false, should);

              else

                doTest(i, true, should);

              doTest(i + 1, true, should);

            task.done();

});

      audit.run();

    </script>

  </body>

</html>