public void Additive_Input_foo_Output_Not_100()
        {
            //  arrange
            Hashing hashing   = new Hashing();
            string  _expected = "100";

            // act
            string _actual = hashing.AdditiveHash("foo");

            // assert
            Assert.AreNotEqual(_expected, _actual);
        }
        public void Additive_Input_ofo_Output_324()
        {
            //  arrange
            Hashing hashing   = new Hashing();
            string  _expected = "324";

            // act
            string _actual = hashing.AdditiveHash("ofo");

            // assert
            Assert.AreEqual(_expected, _actual);
        }