public void CharacterConverter_TryInvalidCharacter([Values('(', '*', '!', '@')] char input)
 {
     Assert.Throws <FormatException>(() => CharacterConverter.ConvertCharacterToInt(input));
 }
        public void CharacterConverter_TestConversion(char input, int expectedOutput)
        {
            var output = CharacterConverter.ConvertCharacterToInt(input);

            Assert.AreEqual(expectedOutput, output);
        }