public void CalculateFibonacci(int index, BigInteger expected)
{
P25Fibonacci fib = new P25Fibonacci();
BigInteger actual = fib.CalculateFibonacci(index);
Assert.Equal(expected, actual);
}
public void CalculateFibonacci_Index3_Returns2()
{
P25Fibonacci fib = new P25Fibonacci();
BigInteger actual = fib.CalculateFibonacci(2);
BigInteger expected = 1;
Assert.Equal(expected, actual);
}