internal void GetDigitalPoles_CorrectlyCallsTheTransformer_Test(
[Frozen] Mock <ITransformer> transformer, IAnalog analog, double cutoff,
double sampleRate, DigitalPolesProvider digitalPolesProvider)
{
var expectedCutoff = sampleRate * 2.0d * Math.Tan(Math.PI * cutoff / sampleRate);
digitalPolesProvider.GetDigitalPoles(analog, cutoff, sampleRate);
transformer.Verify(mock => mock.Transform(analog, expectedCutoff), Times.Once);
}
internal void GetDigitalPoles_ReturnsTheResultsOfTheDigitalTransformer_Test(
[Frozen] Mock <ITransformer> transformer, [Frozen] Mock <IDigitalTransformer> digitalTransformer,
IPolesCoefficients transformedCoefficients, IPolesCoefficients expectedCoefficients,
IAnalog analog, double cutoff, double sampleRate, DigitalPolesProvider digitalPolesProvider)
{
transformer.Setup(mock => mock.Transform(analog, It.IsAny <double>())).Returns(transformedCoefficients);
digitalTransformer.Setup(mock => mock.Transform(transformedCoefficients, It.IsAny <double>()))
.Returns(expectedCoefficients);
Assert.Equal(expectedCoefficients, digitalPolesProvider.GetDigitalPoles(analog, cutoff, sampleRate));
}
internal void GetDigitalPoles_CorrectlyCallsTheDigitalTransformer_Test(
[Frozen] Mock <ITransformer> transformer, [Frozen] Mock <IDigitalTransformer> digitalTransformer,
IPolesCoefficients polesCoefficients, IAnalog analog, double cutoff, double sampleRate,
DigitalPolesProvider digitalPolesProvider)
{
transformer.Setup(mock => mock.Transform(analog, It.IsAny <double>())).Returns(polesCoefficients);
digitalPolesProvider.GetDigitalPoles(analog, cutoff, sampleRate);
digitalTransformer.Verify(mock => mock.Transform(polesCoefficients, sampleRate * 2.0d), Times.Once);
}