public void NoRegistrations()
{
//Arrange
var wa = new WelfordsAlgorithm();
//Assert
Assert.Equal(0, wa.GetNormalSample(), 2);
}
public void ZeroAmount()
{
//Arrange
var wa = new WelfordsAlgorithm();
wa.AddDataPoint(0);
//Assert
Assert.Equal(0, wa.GetNormalSample(), 0);
}
public void NegativeAmount()
{
//Arrange
var wa = new WelfordsAlgorithm();
wa.AddDataPoint(-1);
//Assert
Assert.Equal(-1, wa.GetNormalSample());
}
public void CalculateMeanAndStdDev(double[] inputValues, double expectedMean, double expectedStDev)
{
//Arrange
var sut = new WelfordsAlgorithm();
WelfordsAlgorithmState result = null;
//Act
foreach (var dataPoint in inputValues)
{
result = sut.AddDataPoint(dataPoint);
}
//Assert
Assert.NotNull(result);
Assert.Equal(expectedMean, result.Mean, 2);
Assert.Equal(expectedStDev, result.StandardDeviation, 2);
}
