public void TestAllZeros()
{
//Arrange
const int size = 1024;
Complex[] array = new Complex[size];
Complex[] expected = new Complex[size];
for (int i = 0; i < array.Length; i++)
{
expected[i] = new Complex()
{
realPart = 0, imaginaryPart = 0
};
array[i] = new Complex()
{
realPart = 0, imaginaryPart = 0
};
}
//Act
var result = Extensions.MakeFFT(array, array.Length, 0, 1);
//Assert
Assert.IsTrue(ComplexComparer.AreEqual(result, expected));
}
public void TestSequence()
{
//Arrange
const int size = 4;
Complex[] array = new Complex[size];
Complex[] expected =
{
new Complex()
{
realPart = 10, imaginaryPart = 10
},
new Complex()
{
realPart = 0, imaginaryPart = -4
},
new Complex()
{
realPart = -2, imaginaryPart = -2
},
new Complex()
{
realPart = -4, imaginaryPart = 0
}
};
for (int i = 0; i < array.Length; i++)
{
array[i] = new Complex()
{
realPart = i + 1, imaginaryPart = i + 1
};
}
//Act
var result = Extensions.MakeFFT(array, array.Length, 0, 1);
//Assert
Assert.IsTrue(ComplexComparer.AreEqual(result, expected));
}
public void TestOnesAndZeros()
{
//Arrange
const int size = 1024;
Complex[] array = new Complex[size];
Complex[] expected = new Complex[size];
for (int i = 0; i < array.Length; i++)
{
expected[i] = new Complex()
{
realPart = 0, imaginaryPart = 0
};
if (i % 2 == 0)
{
array[i] = new Complex()
{
realPart = 1, imaginaryPart = 0
};
}
else
{
array[i] = new Complex()
{
realPart = 0, imaginaryPart = 0
};
}
}
expected[0].realPart = size / 2;
expected[size / 2].realPart = size / 2;
//Act
var result = Extensions.MakeFFT(array, array.Length, 0, 1);
//Assert
Assert.IsTrue(ComplexComparer.AreEqual(result, expected));
}