public void countCharsTest3()
        {
            var countCharsObj = new CountChars(stringStripper);
            String input = "I'm an awkward case.";
            String letter = "2";
            int expected = 0;
            int actual = countCharsObj.countChars(letter, input);

            Assert.AreEqual(expected, actual);
        }
        public void countCharsTest2()
        {
            var countCharsObj = new CountChars(stringStripper);
            String input = "I have lots of aaaaaaaaaas";
            String letter = "a";
            int expected = 11;
            int actual = countCharsObj.countChars(letter, input);

            Assert.AreEqual(expected, actual);
        }