convolver-channels.html

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

<!DOCTYPE html>

<html>

  <head>

    <title>

      Test Supported Number of Channels for ConvolverNode

    </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();

      audit.define('channel-count-test', (task, should) => {

        // Just need a context to create nodes on, so any allowed length and

        // rate is ok.

        let context = new OfflineAudioContext(1, 1, 48000);

        let success = true;

        for (let count = 1; count <= 32; ++count) {

          let convolver = context.createConvolver();

          let buffer = context.createBuffer(count, 1, context.sampleRate);

          let message = 'ConvolverNode with buffer of ' + count + ' channels';

          if (count == 1 || count == 2 || count == 4) {

            // These are the only valid channel counts for the buffer.

            should(() => convolver.buffer = buffer, message).notThrow();

          } else {

            should(() => convolver.buffer = buffer, message)

                .throw(DOMException, 'NotSupportedError');

        task.done();

});

      audit.run();

    </script>

  </body>

</html>