public void TestAlternationNodeRendering()
{
RegexNodeLiteral literal1 = new RegexNodeLiteral(@"\w*");
RegexNodeLiteral literal2 = new RegexNodeLiteral(@"\d+");
RegexNodeLiteral literal3 = new RegexNodeLiteral(@"\s?");
RegexNodeAlternation alternation1 = new RegexNodeAlternation(literal1, literal2);
Assert.AreEqual(@"(?:\w*|\d+)", alternation1.ToRegexPattern());
RegexNodeAlternation alternation2 = new RegexNodeAlternation(literal1, literal2, literal3);
Assert.AreEqual(@"(?:\w*|\d+|\s?)", alternation2.ToRegexPattern());
RegexNodeAlternation alternation3 = RegexBuilder.Alternate(literal1, literal2);
Assert.AreEqual(@"(?:\w*|\d+)", alternation3.ToRegexPattern());
RegexNodeAlternation alternation4 = RegexBuilder.Alternate(new RegexNode[] { literal1, literal2, literal3 });
Assert.AreEqual(@"(?:\w*|\d+|\s?)", alternation4.ToRegexPattern());
RegexNodeAlternation alternation5 = new RegexNodeAlternation(literal1, literal2);
alternation5.Quantifier = RegexQuantifier.ZeroOrMore;
Assert.AreEqual(@"(?:\w*|\d+)*", alternation5.ToRegexPattern());
RegexNodeAlternation alternation6 = new RegexNodeAlternation(literal1, literal2, literal3);
alternation6.Quantifier = RegexQuantifier.OneOrMore;
Assert.AreEqual(@"(?:\w*|\d+|\s?)+", alternation6.ToRegexPattern());
RegexNodeAlternation alternation7 = RegexBuilder.Alternate(literal1, literal2, RegexQuantifier.ZeroOrOne);
Assert.AreEqual(@"(?:\w*|\d+)?", alternation7.ToRegexPattern());
RegexNodeAlternation alternation8 = RegexBuilder.Alternate(new RegexNode[] { literal1, literal2, literal3 }, RegexQuantifier.AtLeast(5));
Assert.AreEqual(@"(?:\w*|\d+|\s?){5,}", alternation8.ToRegexPattern());
}
public void TestGroupReferenceNodeRendering()
{
RegexNodeGroupReference reference1 = new RegexNodeGroupReference(1);
Assert.AreEqual(@"\1", reference1.ToRegexPattern());
RegexNodeGroupReference reference2 = new RegexNodeGroupReference("SomeGroup");
Assert.AreEqual(@"\k<SomeGroup>", reference2.ToRegexPattern());
RegexNodeGroupReference reference3 = RegexBuilder.GroupBackReference("SomeGroup");
Assert.AreEqual(@"\k<SomeGroup>", reference3.ToRegexPattern());
RegexNodeGroupReference reference4 = RegexBuilder.GroupBackReference("SomeGroup", RegexQuantifier.Exactly(2));
Assert.AreEqual(@"\k<SomeGroup>{2}", reference4.ToRegexPattern());
RegexNodeGroupReference reference5 = RegexBuilder.GroupBackReference(1, RegexQuantifier.ZeroOrMore);
Assert.AreEqual(@"\1*", reference5.ToRegexPattern());
}
public void TestEmailValidator()
{
const string quotationMark = "\"";
const string alphaCharacters = "a-zA-Z";
const string alphaNumericCharacters = "0-9a-zA-Z";
const string allowedLoginSymbols = "-!#$%&'*+=?^`{}|~";
// Regex value taken from MSDN: http://msdn.microsoft.com/en-us/library/01escwtf.aspx
Regex emailRegex = RegexBuilder.Build
(
RegexBuilder.MetaCharacter(RegexMetaChars.LineStart),
// Match everything before @
RegexBuilder.ConditionalMatch
(
// If the string starts with a quotation mark...
RegexBuilder.Literal(quotationMark),
// ...then match the quoted text and the @ character...
RegexBuilder.Concatenate
(
RegexBuilder.Literal(quotationMark),
RegexBuilder.MetaCharacter(RegexMetaChars.AnyCharacter, RegexQuantifier.OneOrMoreLazy),
RegexBuilder.Literal(quotationMark),
RegexBuilder.Literal("@")
),
// ...otherwise, match a sequence of alphanumeric characters and symbols, followed by @
RegexBuilder.Concatenate
(
RegexBuilder.CharacterSet(alphaNumericCharacters, RegexQuantifier.None),
RegexBuilder.Alternate
(
// The sequence can either contain only one dot...
RegexBuilder.NegativeLookAhead
(
RegexBuilder.Literal("."),
RegexBuilder.Literal(".")
),
// ...or contain some special symbols (-!#$%&'*+=?^`{}|~)
RegexBuilder.CharacterSet(allowedLoginSymbols + RegexMetaChars.WordCharacter, RegexQuantifier.ZeroOrMore),
RegexQuantifier.ZeroOrMore
),
// Before matching the @ character, make sure that it is preceded by alphanumeric characters.
RegexBuilder.PositiveLookBehind
(
RegexBuilder.CharacterSet(alphaNumericCharacters, RegexQuantifier.None),
RegexBuilder.Literal("@")
)
)
),
// Match everything after @
RegexBuilder.ConditionalMatch
(
// Domain can be either an IP address enclosed in square brackets...
RegexBuilder.Literal("["),
// ...(IP address should look like [aaa.bbb.ccc.ddd])...
RegexBuilder.Concatenate
(
RegexBuilder.Literal("["),
RegexBuilder.Concatenate
(
RegexBuilder.MetaCharacter(RegexMetaChars.Digit, RegexQuantifier.Custom(1, 3, false)),
RegexBuilder.Literal("."),
RegexQuantifier.Exactly(3)
),
RegexBuilder.MetaCharacter(RegexMetaChars.Digit, RegexQuantifier.Custom(1, 3, false)),
RegexBuilder.Literal("]")
),
// ...or it can be a hostname.
RegexBuilder.Concatenate
(
RegexBuilder.Concatenate
(
RegexBuilder.CharacterSet(alphaNumericCharacters, RegexQuantifier.None),
RegexBuilder.CharacterSet("-" + RegexMetaChars.WordCharacter, RegexQuantifier.ZeroOrMore),
RegexBuilder.CharacterSet(alphaNumericCharacters, RegexQuantifier.None),
RegexBuilder.Literal("."),
RegexQuantifier.OneOrMore
),
RegexBuilder.CharacterSet(alphaCharacters, RegexQuantifier.Custom(2, 6, false))
)
),
RegexBuilder.MetaCharacter(RegexMetaChars.LineEnd)
);
Assert.IsTrue(emailRegex.IsMatch("*****@*****.**"));
Assert.IsTrue(emailRegex.IsMatch("*****@*****.**"));
Assert.IsTrue(emailRegex.IsMatch("*****@*****.**"));
Assert.IsFalse(emailRegex.IsMatch("*****@*****.**"));
Assert.IsFalse(emailRegex.IsMatch("[email protected]"));
Assert.IsTrue(emailRegex.IsMatch("js#[email protected]"));
Assert.IsTrue(emailRegex.IsMatch("j_9@[129.126.118.1]"));
Assert.IsFalse(emailRegex.IsMatch("*****@*****.**"));
Assert.IsFalse(emailRegex.IsMatch("js*@proseware.com"));
Assert.IsFalse(emailRegex.IsMatch("*****@*****.**"));
Assert.IsFalse(emailRegex.IsMatch("[email protected]"));
Assert.IsTrue(emailRegex.IsMatch("*****@*****.**"));
}