public void TestNullParameter()
        {
            var          ap            = new ArgumentAttributeParser();
            const string attIdentifier = "argument";

            var e = Assert.Catch(() => {
                ap.ParsedAttribute(attIdentifier,
                                   new NParsedAttributeAtomic(new ParsedFloat()),
                                   new NParsedAttributeAtomic(new IdentifierExpression("software")));
            });

            Assert.IsInstanceOf(typeof(InvalidParameterAttributeException), e);
            StringAssert.AreEqualIgnoringCase(
                string.Format(InvalidParameterAttributeException.NO_PARAM, attIdentifier),
                e.Message
                );
        }
        public void TestNotColonValue(NParsedAttributeValue v)
        {
            var          ap            = new ArgumentAttributeParser();
            const string attIdentifier = "argument";

            var e = Assert.Catch(() => {
                ap.ParsedAttribute(attIdentifier,
                                   null,
                                   v);
            });

            Assert.IsInstanceOf(typeof(InvalidAttributeValueException), e);
            StringAssert.AreEqualIgnoringCase(
                string.Format(InvalidAttributeValueException.COLON_ONLY, attIdentifier),
                e.Message
                );
        }
        private static void TestInvalidColonValueHelper(ParsedElement left, ParsedElement right)
        {
            var          ap            = new ArgumentAttributeParser();
            const string attIdentifier = "argument";

            var e = Assert.Catch(() => {
                ap.ParsedAttribute(attIdentifier,
                                   null,
                                   new NParsedAttributeColon(left, right));
            });

            Assert.IsInstanceOf(typeof(InvalidAttributeValueException), e);
            StringAssert.AreEqualIgnoringCase(
                string.Format(InvalidAttributeValueException.IDENTIFIER, attIdentifier),
                e.Message
                );
        }