public void Fibonacci_AtPosition_ByLoop(int input, int expected)
        {
            //Arrange

            //Action
            int result = FibonacciCalculus.Fibonacci_By_Loop(input);

            //Assert
            Assert.AreEqual(expected, result);
        }
        public void Fibonacci_Test_Recursive(int input, int expected)
        {
            //Arrange

            //Action
            int result = FibonacciCalculus.Fibonacci_Recursive(input);

            //Assert
            Assert.AreEqual(expected, result);
        }