private string GetResult(int number)
            {
                var fizzBuzzer = new FizzBuzzer();

                var result = fizzBuzzer.FizzBuzzIt(number);

                return result;
            }
            public void FizzBuzz_UpTo_15_should_return_correct_string()
            {
                var fizzBuzzer = new FizzBuzzer();

                string result = fizzBuzzer.UpTo(15);

                result.Should().Equal(UP_TO_15);
            }
            public void FizzBuzz_UpTo_6_should_return_1_2_Fizz_4_Buzz_Fizz()
            {
                var fizzBuzzer = new FizzBuzzer();

                string result = fizzBuzzer.UpTo(6);

                result.Should().Equal("1, 2, Fizz, 4, Buzz, Fizz");
            }
            public void FizzBuzz_UpTo_100_should_return_correct_string()
            {
                var fizzBuzzer = new FizzBuzzer();

                string result = fizzBuzzer.UpTo(100);

                result.Should().Equal("1, 2, Fizz, 4, Buzz, Fizz, 7, 8, Fizz, Buzz, 11, Fizz, 13, 14, FizzBuzz, 16, 17, Fizz, 19, Buzz, Fizz, 22, 23, Fizz, Buzz, 26, Fizz, 28, 29, FizzBuzz, 31, 32, Fizz, 34, Buzz, Fizz, 37, 38, Fizz, Buzz, 41, Fizz, 43, 44, FizzBuzz, 46, 47, Fizz, 49, Buzz, Fizz, 52, 53, Fizz, Buzz, 56, Fizz, 58, 59, FizzBuzz, 61, 62, Fizz, 64, Buzz, Fizz, 67, 68, Fizz, Buzz, 71, Fizz, 73, 74, FizzBuzz, 76, 77, Fizz, 79, Buzz, Fizz, 82, 83, Fizz, Buzz, 86, Fizz, 88, 89, FizzBuzz, 91, 92, Fizz, 94, Buzz, Fizz, 97, 98, Fizz, Buzz");
            }