public void Integral_Trapezoid_XX_0_10_BadN()
{
//arrange
double a = 0;
double b = 10;
int n = -1000000;
ICalculator calcul = new TrapezoidCalc();
//act
double actual = calcul.Calculate(a, b, n, x => x * x);
}
public void Integral_Trapezoid_XX_0_10_Correct()
{
//arrange
double expected = 333.333;
double a = 0;
double b = 10;
int n = 10000;
ICalculator calcul = new TrapezoidCalc();
//act
double actual = calcul.Calculate(a, b, n, x => x * x);
//assert
Assert.AreEqual(expected, actual, 0.001);
}
public void T_Step_0()
{
//arrange
double expected = 0;
double a = 10;
double b = 10;
int n = 10000;
ICalculator calcul = new TrapezoidCalc();
//act
double actual = calcul.Calculate(a, b, n, x => x * x);
//assert
Assert.AreEqual(expected, actual);
}
public void T_xx_Negative_Step()
{
//arrange
double expected = 333.333;
double a = 0;
double b = 10;
int n = -10000;
ICalculator calcul = new TrapezoidCalc();
//act
double actual = calcul.Calculate(a, b, n, x => x * x);
//assert
Assert.AreEqual(expected, actual, 0.001);
}
