public void FFTWAlgorithmCalledSeveralTimesWithCachedFFTWPlans()
{
const int FFTLength = 2048;
const int NumberOfInvocations = 5;
float[] signal = TestUtilities.GenerateRandomFloatArray(FFTLength * NumberOfInvocations);
IntPtr input = Marshal.AllocHGlobal(4 * 2048);
IntPtr output = Marshal.AllocHGlobal(8 * 1024);
IntPtr plan = Marshal.AllocHGlobal(8 * 1024);
fftwService.Setup(service => service.GetInput(FFTLength)).Returns(input);
fftwService.Setup(service => service.GetOutput(FFTLength)).Returns(output);
fftwService.Setup(service => service.GetFFTPlan(FFTLength, input, output)).Returns(plan);
fftwService.Setup(service => service.Execute(plan));
fftwService.Setup(service => service.FreeUnmanagedMemory(input));
fftwService.Setup(service => service.FreeUnmanagedMemory(output));
fftwService.Setup(service => service.FreePlan(plan));
using (var cachedFFTWService = new CachedFFTWService(fftwService.Object))
{
for (int i = 0; i < NumberOfInvocations; i++)
{
cachedFFTWService.FFTForward(signal, FFTLength * i, FFTLength);
}
}
fftwService.Verify(service => service.GetInput(FFTLength), Times.Once());
fftwService.Verify(service => service.GetOutput(FFTLength), Times.Once());
fftwService.Verify(service => service.GetFFTPlan(FFTLength, input, output), Times.Once());
fftwService.Verify(service => service.Execute(plan), Times.Exactly(NumberOfInvocations));
Marshal.FreeHGlobal(input);
Marshal.FreeHGlobal(output);
Marshal.FreeHGlobal(plan);
}
public void SetUp()
{
fftwService = new Mock<FFTWService>(MockBehavior.Strict);
cachedFFTWService = new CachedFFTWService(fftwService.Object);
}