public void TestGetTypeError(Type expectedExceptionType, char c)
        {
            var notation = new ReversePolishNotation();

            Assert.Throws(expectedExceptionType,
                          () => notation.GetType(c));
        }
        public void TestGetType(char c, CharType type)
        {
            var notation = new ReversePolishNotation();

            Assert.True(Equals(notation.GetType(c), type));
        }