public void ShouldProduceNumeric_FizzBuzzOutput()
        {
            var fizzBuzzCalculator = new FizzBuzzCalculator();

            var actual = fizzBuzzCalculator.CalculateFizzBuzz(2);

            actual.Should().Be(ExpectedTwo);
        }
        public void ShouldProduceFizz_FizzBuzzOutput()
        {
            var fizzBuzzCalculator = new FizzBuzzCalculator();

            var actual = fizzBuzzCalculator.CalculateFizzBuzz(3);

            actual.Should().Be(ExpectedThree);
        }