public void ShouldRemoveQuantifierPlus()
{
// Arrange
var quantifierNode = new QuantifierPlusNode(new CharacterNode('X'));
var childNodes = new List <RegexNode>
{
new CharacterNode('a'),
new CharacterNode('b'),
new CharacterNode('c'),
quantifierNode
};
var rootNode = new ConcatenationNode(childNodes);
var target = new QuantifierRemovalMutator();
// Act
var result = target.ApplyMutations(quantifierNode, rootNode);
// Assert
var mutation = result.ShouldHaveSingleItem();
mutation.OriginalNode.ShouldBe(quantifierNode);
mutation.ReplacementNode.ToString().ShouldBe("X");
mutation.ReplacementPattern.ShouldBe("abcX");
mutation.DisplayName.ShouldBe("Regex quantifier removal mutation");
mutation.Description.ShouldBe("Quantifier \"+\" was removed at offset 4.");
}
public void GetDescendantsShouldReturnAllDescendants()
{
// Arrange
// a+bc*
var charNodeA = new CharacterNode('a');
var charNodeB = new CharacterNode('b');
var charNodeC = new CharacterNode('c');
var quantifierPlus = new QuantifierPlusNode(charNodeA);
var quantifierStar = new QuantifierStarNode(charNodeC);
var grandchildren = new List <RegexNode> {
quantifierPlus, charNodeB, quantifierStar
};
var concatenationNode = new ConcatenationNode(grandchildren);
var target = new TestRegexNode(concatenationNode);
// Act
IEnumerable <RegexNode> result = target.GetDescendantNodes();
// Assert
result.Count().ShouldBe(6);
result.First().ShouldBe(charNodeA);
result.ElementAt(1).ShouldBe(quantifierPlus);
result.ElementAt(2).ShouldBe(charNodeB);
result.ElementAt(3).ShouldBe(charNodeC);
result.ElementAt(4).ShouldBe(quantifierStar);
result.Last().ShouldBe(concatenationNode);
}
public void ToStringShouldReturnQuantifierPlusOnChildNodeToString()
{
// Arrange
var characterNode = new CharacterNode('a');
var target = new QuantifierPlusNode(characterNode);
// Act
var result = target.ToString();
// Assert
result.ShouldBe("a+");
}
public void SpanShouldStartAfterChildNodes()
{
// Arrange
var childNode = new CharacterNode('a');
var target = new QuantifierPlusNode(childNode);
// Act
var(Start, Length) = target.GetSpan();
// Assert
Start.ShouldBe(childNode.ToString().Length);
Length.ShouldBe(1);
}
public void ChildNodeShouldStartBeforeQuantifier()
{
// Arrange
var target = new CharacterNode('a');
_ = new QuantifierPlusNode(target);
// Act
var(Start, Length) = target.GetSpan();
// Assert
Start.ShouldBe(0);
Length.ShouldBe(1);
}
public void ToStringOnQuantifierWithPrefixShouldReturnPrefixBeforeOriginalQuantifierAndAfterQuantifiersChildNode()
{
// Arrange
var comment = new CommentGroupNode("This is a comment.");
var characterNode = new CharacterNode('a');
var target = new QuantifierPlusNode(characterNode)
{
Prefix = comment
};
// Act
var result = target.ToString();
// Assert
result.ShouldBe("a(?#This is a comment.)+");
}
public void SpanShouldStartAfterPrefix()
{
// Arrange
var childNode = new CharacterNode('a');
var prefix = new CommentGroupNode("X");
var target = new QuantifierPlusNode(childNode)
{
Prefix = prefix
};
// Act
var(Start, Length) = target.GetSpan();
// Assert
Start.ShouldBe(6);
Length.ShouldBe(1);
}
public void ChildNodeShouldStartBeforeQuantifiersPrefix()
{
// Arrange
var target = new CharacterNode('a');
var prefix = new CommentGroupNode("X");
_ = new QuantifierPlusNode(target)
{
Prefix = prefix
};
// Act
var(Start, Length) = target.GetSpan();
// Assert
Start.ShouldBe(0);
Length.ShouldBe(1);
}
