public void S_Step_0()
{
//arrange
double expected = 0;
double a = 10;
double b = 10;
int n = 10000;
ICalculator calcul = new Simpson();
//act
double actual = calcul.CalculateParallel(a, b, n, x => x * x);
//assert
Assert.AreEqual(expected, actual);
}
public void S_xx_Odd_Step()
{
//arrange
double expected = 333.333;
double a = 0;
double b = 10;
int n = 1001;
ICalculator calcul = new Simpson();
//act
double actual = calcul.CalculateParallel(a, b, n, x => x * x);
//assert
Assert.AreEqual(expected, actual, 0.001);
}