public void Integral_Rectangle_XX_0_10_BadN()
{
//arrange
double a = 0;
double b = 10;
int n = -1000000;
ICalculator calcul = new RectangleCalculator();
//act
double actual = calcul.Calculate(a, b, n, x => x * x);
}
[ExpectedException(typeof(ArgumentException))] // 5 означает что выдаст исключение
public void Intergrate_xx_negative_n()
{
// Arrange
double a = 0;
double b = a;
long n = -10;
RectangleCalculator rectangleCalculator = new RectangleCalculator();
Func <double, double> f = x => x * x;
// Act
double actual = rectangleCalculator.Calculate(a, b, n, f);
}
public void Integral_Rectangle_0_0_10_Correct()
{
//arrange
double expected = 0;
double a = 0;
double b = 10;
int n = 10000;
ICalculator calcul = new RectangleCalculator();
//act
double actual = calcul.Calculate(a, b, n, x => 0);
//assert
Assert.AreEqual(expected, actual, 0.001);
}
public void Integral_Rectangle_XX_0_10_Correct()
{
//arrange подготовить
double expected = 333.333;
double a = 0;
double b = 10;
int n = 10000;
ICalculator calcul = new RectangleCalculator();
//act действие
double actual = calcul.Calculate(a, b, n, x => x * x);
//assert
Assert.AreEqual(expected, actual, 0.001);
}
public void Intergrate_xx_Gives_0_For_Rectangle() // 3 проверка 0 для прямоугольников
{
//arrange
double expected = 0;
double a = 0;
double b = a;
long n = 100000;
RectangleCalculator rectangleCalculator = new RectangleCalculator();
Func <double, double> f = x => x * x;
//act
double actual = rectangleCalculator.Calculate(a, b, n, f);
//assert
Assert.AreEqual(expected, actual, 0.0001);
}
public void RectangleCalculator_Right()
{
//arrange
double expected = 174591.027;
int a = 1;
int b = 100;
int n = 100000;
RectangleCalculator rectangleCalculator = new RectangleCalculator();
Func <double, double> f = x => 35 * x - Math.Log(10 * x) + 2;
//act
double actual = rectangleCalculator.Calculate(a, b, n, f);
//accert
Assert.AreEqual(expected, actual, 0.001);
}
public void Correct_Rectangle_Method_2()
{
//arrange
double expected = 54197.59134;
double a = 1;
double b = 100;
long n = 10000;
RectangleCalculator rectangleCalculator = new RectangleCalculator();
Func <double, double> f = x => 11 * x - Math.Log(11 * x) - 2;
//act
double actual = rectangleCalculator.Calculate(a, b, n, f);
//assert
Assert.AreEqual(expected, actual, 0.0001);
}
public void Correct_Rectangle_Method_1()
{
//arrange
double expected = 36458.33333;
double a = 25;
double b = 50;
long n = 10000;
RectangleCalculator rectangleCalculator = new RectangleCalculator();
Func <double, double> f = x => x * x;
//act
double actual = rectangleCalculator.Calculate(a, b, n, f);
//assert
Assert.AreEqual(expected, actual, 0.0001);
}
public void Error_if_a_and_b_below_zero()
{
double expected = 174591.027;
int a = -1;
int b = -100;
int n = 100;
Func <double, double> f = x => 35 * x - Math.Log(10 * x) + 2;
RectangleCalculator RectangleCalculator = new RectangleCalculator();
TrapCalculator TrapCalculator = new TrapCalculator();
SimpsonCalculator SimpsonCalculator = new SimpsonCalculator();
//act
double actual1 = RectangleCalculator.Calculate(a, b, n, f);
double actual2 = TrapCalculator.Calculate(a, b, n, f);
double actual3 = SimpsonCalculator.Calculate(a, b, n, f);
}
public void Intergrate_xx_Gives_Correct_Result()
{
//arrange
double expected = 333_333.3333;
double a = 0;
double b = 100;
long n = 100000;
RectangleCalculator rectangleCalculator = new RectangleCalculator();
Func <double, double> f = x => x * x;
//act
double actual = rectangleCalculator.Calculate(a, b, n, f);
//assert
Assert.AreEqual(expected, actual, 0.0001);
}
public void Intergrate_xx_negative_n()
{
//arrange
double expected = 0;
double a = 0;
double b = 100;
long n = -10;
RectangleCalculator rectangleCalculator = new RectangleCalculator();
Func <double, double> f = x => x * x;
//act
double actual = rectangleCalculator.Calculate(a, b, n, f);
//assert
Assert.AreEqual(expected, actual, 0.0001);
}