public void AlternatesShouldReturnNullIfNoAlternates()
{
// Arrange
var condition = new CaptureGroupNode(new CharacterNode('c'));
var target = new ConditionalGroupNode(condition);
// Act
var result = target.Alternates;
// Assert
result.ShouldBeNull();;
}
public void ToStringOnConditionalWithoutAlternatesShouldReturnConditionalGroupWithOnlyCondition()
{
// Arrange
var condition = new CaptureGroupNode(new CharacterNode('c'));
var target = new ConditionalGroupNode(condition);
// Act
var result = target.ToString();
// Assert
result.ShouldBe("(?(c))", result);
}
public void ToStringOnConditionalWithConcatenationAsAlternatesShouldReturnConditionalGroupWithConditionAndOnlyThenAlternate()
{
// Arrange
var thenBranchChildNodes = new List <RegexNode> {
new CharacterNode('t'), new CharacterNode('h'), new CharacterNode('e'), new CharacterNode('n')
};
var alternates = new ConcatenationNode(thenBranchChildNodes);
var condition = new CaptureGroupNode(new CharacterNode('c'));
var target = new ConditionalGroupNode(condition, alternates);
// Act
var result = target.ToString();
// Assert
result.ShouldBe("(?(c)then)", result);
}
public void AlternatesShouldReturnOriginalAlternates()
{
// Arrange
var thenBranch = new CharacterNode('t');
var elseBranch = new CharacterNode('e');
var alternates = new AlternationNode(new List <RegexNode> {
thenBranch, elseBranch
});
var condition = new CaptureGroupNode(new CharacterNode('c'));
var target = new ConditionalGroupNode(condition, alternates);
// Act
var result = target.Alternates;
// Assert
result.ShouldBe(alternates);
}
public void AlternatesGetSpanShouldReturnTupleWithStartEqualToConditionLengthPlus2()
{
// Arrange
var thenBranch = new CharacterNode('t');
var elseBranch = new CharacterNode('e');
var alternates = new AlternationNode(new List <RegexNode> {
thenBranch, elseBranch
});
var condition = new CaptureGroupNode(new CharacterNode('c'));
var target = new ConditionalGroupNode(condition, alternates);
// Act
var(Start, _) = target.Alternates.GetSpan();
// Assert
Start.ShouldBe(condition.ToString().Length + 2);
}
public void ToStringShouldReturnConditionalGroupWithConditionAndThenAndElseAlternates()
{
// Arrange
var thenBranch = new CharacterNode('t');
var elseBranch = new CharacterNode('e');
var alternates = new AlternationNode(new List <RegexNode> {
thenBranch, elseBranch
});
var condition = new CaptureGroupNode(new CharacterNode('c'));
var target = new ConditionalGroupNode(condition, alternates);
// Act
var result = target.ToString();
// Assert
result.ShouldBe("(?(c)t|e)", result);
}
public void ChildNodesGetSpanShouldReturnTupleWithStartEqualToPreviousChildsStartPlusLengthStartingAt2()
{
// Arrange
var thenBranch = new CharacterNode('t');
var elseBranch = new CharacterNode('e');
var alternates = new AlternationNode(new List <RegexNode> {
thenBranch, elseBranch
});
var condition = new CaptureGroupNode(new CharacterNode('c'));
var target = new ConditionalGroupNode(condition, alternates);
// Act
var(Start, Length) = target.ChildNodes.First().GetSpan();
var(Start2, _) = target.ChildNodes.ElementAt(1).GetSpan();
// Assert
Start.ShouldBe(2);
Start2.ShouldBe(Start + Length);
}
public void ToStringOnConditionalGroupNodeWithprefixShouldReturnPrefixBeforeConditionalGroupNode()
{
// Arrange
var comment = new CommentGroupNode("This is a comment.");
var thenBranch = new CharacterNode('t');
var elseBranch = new CharacterNode('e');
var alternates = new AlternationNode(new List <RegexNode> {
thenBranch, elseBranch
});
var condition = new CaptureGroupNode(new CharacterNode('c'));
var target = new ConditionalGroupNode(condition, alternates)
{
Prefix = comment
};
// Act
var result = target.ToString();
// Assert
result.ShouldBe("(?#This is a comment.)(?(c)t|e)");
}
