delaynode.html - mozsearch

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

<!DOCTYPE html>

<html>

  <head>

    <title>

      delaynode.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>

    <script src="/webaudio/resources/delay-testing.js"></script>

  </head>

  <body>

    <script id="layout-test-code">

      let audit = Audit.createTaskRunner();

      audit.define(

            label: 'test',

            description: 'Tests attribute and basic functionality of DelayNode'

},

          function(task, should) {

            // Create offline audio context.

            let context = new OfflineAudioContext(

                1, sampleRate * renderLengthSeconds, sampleRate);

            let toneBuffer = createToneBuffer(

                context, 20, 20 * toneLengthSeconds, sampleRate);  // 20Hz tone

            let bufferSource = context.createBufferSource();

            bufferSource.buffer = toneBuffer;

            let delay = context.createDelay();

            window.delay = delay;

            should(delay.numberOfInputs, 'delay.numberOfInputs').beEqualTo(1);

            should(delay.numberOfOutputs, 'delay.numberOfOutputs').beEqualTo(1);

            should(delay.delayTime.defaultValue, 'delay.delayTime.defaultValue')

                .beEqualTo(0.0);

            should(delay.delayTime.value, 'delay.delayTime.value')

                .beEqualTo(0.0);

            delay.delayTime.value = delayTimeSeconds;

            should(

                delay.delayTime.value,

                'delay.delayTime.value = ' + delayTimeSeconds)

                .beEqualTo(delayTimeSeconds);

            bufferSource.connect(delay);

            delay.connect(context.destination);

            bufferSource.start(0);

            context.startRendering()

                .then(buffer => checkDelayedResult(buffer, toneBuffer, should))

                .then(task.done.bind(task));

});

      audit.run();

    </script>

  </body>

</html>