public void FizzBuzzDivisible_91()
        {
            var stringwriter = new FizzBuzzDigits();

            Assert.AreEqual(stringwriter.GetString(91), "91");
        }
        public void FizzBuzzDivisible_13()
        {
            var stringwriter = new FizzBuzzDigits();

            Assert.AreEqual(stringwriter.GetString(13), "Fizz");
        }
        public void FizzBuzzDivisible_532()
        {
            var stringwriter = new FizzBuzzDigits();

            Assert.AreEqual(stringwriter.GetString(532), "BuzzFizz");
        }