### Question:
Synthesizer { public static int[] availableAudioBufferSizes() { return availableAudioBufferSizes(minAudioDeviceBufferSize()); } Synthesizer(int bufferSize, int maxConcurrentTones);   Synthesizer(int sampleRate, int bufferSize, int maxConcurrentTones, int maxAmplitude); void tone(int id, double tone); double tone(int id); void volume(int id, int volume); int volume(int id); void octave(int value); void raisePitch(float hertz); synchronized void play(); synchronized void stop(); static int[] availableAudioBufferSizes(); static int minAudioDeviceBufferSize(); static final int DEFAULT_MAX_AMPLITUDE; static final int DEFAULT_SAMPLE_RATE; }### Answer:
@Test public void availableAudioBufferSizes_returns_expected() { assertArrayEquals(new int[]{ 64, 128 }, Synthesizer.availableAudioBufferSizes(128)); }