public void WhenTailRecursionFibonacciOf7_ThenTheNumberIs13()
        {
            var resutl = TailRecursionFibonacci.Value(7);

            Assert.AreEqual(13, resutl, "Incorrect Fibonacci number");
        }
        public void WhenTailRecursionFibonacciOf3_ThenTheNumberIs2()
        {
            var resutl = TailRecursionFibonacci.Value(3);

            Assert.AreEqual(2, resutl, "Incorrect Fibonacci number");
        }