public void Sanitize_Handles_Null_String()
        {
            //Arrange
            verbEx = VerbalExpressions.DefaultExpression;
            string value = null;

            //Act
            //Assert
            value = verbEx.Sanitize(value);
        }
        public void Sanitize_AddCharactersThatShouldBeEscaped_ReturnsEscapedString()
        {
            //Arrange
            verbEx = VerbalExpressions.DefaultExpression;
            string value = "*+?";
            string result = string.Empty;
            string expected = @"\*\+\?";

            //Act
            result = verbEx.Sanitize(value);

            //Assert
            Assert.AreEqual(expected, result);
        }