public void GetLinesTestWithEmptyInput()
{
int inputLength = 3;
var input = new string('\0', inputLength);
var builder = new LineBuilder(input, null);
List<string> lines;
// a+b+ - should be abb, aab
var aBlock = new TextBlock("a");
var bBlock = new TextBlock("b");
var plusBlock1 = new OneOrMoreBlock(aBlock);
var plusBlock2 = new OneOrMoreBlock(bBlock);
var groupBlock = new AndGroupBlock(new RegexBlock[] { plusBlock1, plusBlock2 });
var regex1 = new RegularExpression(groupBlock);
lines = builder.GetLines(regex1).ToList();
string[] expectedLines = new string[] { "abb", "aab" };
CollectionAssert.AreEquivalent(expectedLines, lines);
// a*b* - should be bbb, abb, aab, aaa
var starBlock1 = new ZeroOrMoreBlock(aBlock);
var starBlock2 = new ZeroOrMoreBlock(bBlock);
groupBlock = new AndGroupBlock(new RegexBlock[] { starBlock1, starBlock2 });
var regex2 = new RegularExpression(groupBlock);
lines = builder.GetLines(regex2).ToList();
expectedLines = new string[] { "bbb", "abb", "aab", "aaa" };
CollectionAssert.AreEquivalent(expectedLines, lines);
}
public void ParseTest10()
{
var parser = new RegexParser();
string pattern = ".*a.*";
// Expected regular expression
var anyCharacterBlock = new AnyCharacterBlock();
var zeroOrOneBlock = new ZeroOrMoreBlock(anyCharacterBlock);
var textBlock = new TextBlock("a");
var groupBlock = new AndGroupBlock(new RegexBlock[] { zeroOrOneBlock, textBlock, zeroOrOneBlock });
var expected = new RegularExpression(groupBlock);
var actual = parser.Parse(pattern);
actual.ShouldBeEquivalentTo(expected, options => options.IncludingAllRuntimeProperties());
}
public void ParseTest1()
{
var parser = new RegexParser();
string pattern = "a+b+";
// Expected regular expression
var aBlock = new TextBlock("a");
var bBlock = new TextBlock("b");
var groupBlock = new AndGroupBlock(new RegexBlock[] { new OneOrMoreBlock(aBlock), new OneOrMoreBlock(bBlock) });
var expected = new RegularExpression(groupBlock);
var actual = parser.Parse(pattern);
actual.ShouldBeEquivalentTo(expected, options => options.IncludingAllRuntimeProperties(), "Pattern has been parsed incorrectly");
}
public void ParseTest11()
{
var parser = new RegexParser();
string pattern = @".+(.)(.)(.)(.)\4\3\2\1.*";
// Expected regular expression
var anyCharacterBlock = new AnyCharacterBlock();
var oneOrMoreBlock = new OneOrMoreBlock(anyCharacterBlock);
var zeroOrOneBlock = new ZeroOrMoreBlock(anyCharacterBlock);
var andGroupBlock = new AndGroupBlock(new [] { anyCharacterBlock });
var b4 = new BackreferenceBlock(4);
var b3 = new BackreferenceBlock(3);
var b2 = new BackreferenceBlock(2);
var b1 = new BackreferenceBlock(1);
var groupBlock = new AndGroupBlock(new RegexBlock[] { oneOrMoreBlock, andGroupBlock, andGroupBlock, andGroupBlock, andGroupBlock, b4, b3, b2, b1, zeroOrOneBlock });
var expected = new RegularExpression(groupBlock);
var actual = parser.Parse(pattern);
actual.ShouldBeEquivalentTo(expected, options => options.IncludingAllRuntimeProperties());
}
public void TestRealWorldExpression1()
{
int inputLength = 10;
var input = new string('\0', inputLength);
var builder = new LineBuilder(input, null);
List<string> lines;
var block1 = new TextBlock("o");
var block2 = new TextBlock("rhh");
var block3 = new TextBlock("mm");
var orGroupBlock = new OrGroupBlock(new RegexBlock[] { block1, block2, block3 });
var starBlock = new ZeroOrMoreBlock(orGroupBlock);
var andGroupBlock = new OrGroupBlock(new RegexBlock[] { starBlock });
var regex = new RegularExpression(andGroupBlock);
lines = builder.GetLines(regex).ToList();
// Check against regular expression
string regexPattern = "(o|rhh|mm)*";
CheckGeneratedLines(lines, regexPattern);
}
protected object Visit(RegularExpression expression)
{
return Visit(expression.InnerBlock);
}
public void ParseTest9()
{
var parser = new RegexParser();
string pattern = "[^abc]";
// Expected regular expression
var setBlock = new ExclusiveSetBlock("abc");
var groupBlock = new AndGroupBlock(new RegexBlock[] { setBlock });
var expected = new RegularExpression(groupBlock);
var actual = parser.Parse(pattern);
actual.ShouldBeEquivalentTo(expected, options => options.IncludingAllRuntimeProperties());
}
public void ParseTest6()
{
var parser = new RegexParser();
string pattern = "(a|b)";
// Expected regular expression
var aBlock = new TextBlock("a");
var bBlock = new TextBlock("b");
var orGroupBlock = new OrGroupBlock(new RegexBlock[] { aBlock, bBlock });
var expected = new RegularExpression(orGroupBlock);
var actual = parser.Parse(pattern);
actual.ShouldBeEquivalentTo(expected, options => options.IncludingAllRuntimeProperties());
}
public void ParseTest4()
{
var parser = new RegexParser();
string pattern = "(a+)*";
// Expected regular expression
var aBlock = new TextBlock("a");
var plusBlock = new OneOrMoreBlock(aBlock);
var andGroupBlock = new AndGroupBlock(new[] { plusBlock });
var starBlock = new ZeroOrMoreBlock(andGroupBlock);
var andGroupBlock2 = new AndGroupBlock(new[] { starBlock });
var expected = new RegularExpression(andGroupBlock2);
var actual = parser.Parse(pattern);
actual.ShouldBeEquivalentTo(expected, options => options.IncludingAllRuntimeProperties());
}
public void ParseTest3()
{
var parser = new RegexParser();
string pattern = "(ab|bc)+";
// Expected regular expression
var abBlock = new TextBlock("ab");
var bcBlock = new TextBlock("bc");
var orGroupBlock = new OrGroupBlock(new RegexBlock[] { abBlock, bcBlock });
var plusBlock = new OneOrMoreBlock(orGroupBlock);
var andGroupBlock = new AndGroupBlock(new[] { plusBlock });
var expected = new RegularExpression(andGroupBlock);
var actual = parser.Parse(pattern);
actual.ShouldBeEquivalentTo(expected, options => options.IncludingAllRuntimeProperties());
}
public void ParseTest2()
{
var parser = new RegexParser();
string pattern = "a*b*";
// Expected regular expression
var aBlock = new TextBlock("a");
var bBlock = new TextBlock("b");
var starBlock1 = new ZeroOrMoreBlock(aBlock);
var starBlock2 = new ZeroOrMoreBlock(bBlock);
var groupBlock = new AndGroupBlock(new RegexBlock[] { starBlock1, starBlock2 });
var expected = new RegularExpression(groupBlock);
var actual = parser.Parse(pattern);
actual.ShouldBeEquivalentTo(expected, options => options.IncludingAllRuntimeProperties());
}
public void ParseTest14()
{
var parser = new RegexParser();
string pattern = @"[^c]*[^r]*iii.*";
// Expected regular expression
var textBlock = new TextBlock("iii");
var groupBlock =
new AndGroupBlock(
new RegexBlock[]
{
new ZeroOrMoreBlock(new ExclusiveSetBlock("c")), new ZeroOrMoreBlock(new ExclusiveSetBlock("r")), textBlock,
new ZeroOrMoreBlock(new AnyCharacterBlock())
});
var expected = new RegularExpression(groupBlock);
var actual = parser.Parse(pattern);
actual.ShouldBeEquivalentTo(expected, options => options.IncludingAllRuntimeProperties());
}
public bool Check(RegularExpression expression)
{
return GetPositions(0, expression.InnerBlock).Any(position => position == _input.Length);
}
public CrosswordQuestion(RegularExpression expression, string pattern)
{
Expression = expression;
_pattern = pattern;
}