delaynode-maxdelaylimit.html

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

<!DOCTYPE html>

<html>

  <head>

    <title>

      delaynode-maxdelaylimit.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 maximum allowed delay 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;

            window.context = context;

            should(() => context.createDelay(180),

                   'Setting Delay length to 180 seconds or more')

                .throw(DOMException, 'NotSupportedError');

            should(() => context.createDelay(0),

                   'Setting Delay length to 0 seconds')

                .throw(DOMException, 'NotSupportedError');

            should(() => context.createDelay(-1),

                   'Setting Delay length to negative')

                .throw(DOMException, 'NotSupportedError');

            should(() => context.createDelay(NaN),

                   'Setting Delay length to NaN')

                .throw(TypeError);

            let delay = context.createDelay(179);

            delay.delayTime.value = delayTimeSeconds;

            window.delay = delay;

            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());

});

      audit.run();

    </script>

  </body>

</html>