public void Factorial_Numbers_EqualTo()
{
// Act
int result = _calculator.Factorial(4);
int zeroResult = _calculator.Factorial(0);
// Assert
Assert.That(result, Is.EqualTo(24));
Assert.That(zeroResult, Is.EqualTo(1));
}
public void FactorialOfNegativeNumber(double num1, double expected)
{
Calculator calculator = new Calculator();
double result = calculator.Factorial(num1);
Assert.AreEqual(expected, result);
}