 {
        // Arbitrary sample rate and duration.
        let sampleRate = 8000;
        let testDuration = 1;
        let context = new OfflineAudioContext({
          numberOfChannels: 3,
          sampleRate: sampleRate,
          length: testDuration * sampleRate
        });


        doTest(context, should, {
          nodeName: 'GainNode',
          nodeOptions: null,
          prefix: 'GainNode',
          // Set AudioParam to k-rate
          rateSettings: [{name: 'gain', value: 'k-rate'}],
        