public void MutationShouldNotContainOriginalNodesPrefixInDescription()
{
// Arrange
var prefix = new CommentGroupNode("This is a comment.");
var startOfLineNode = new StartOfLineNode()
{
Prefix = prefix
};
var childNodes = new List <RegexNode>
{
startOfLineNode,
new CharacterNode('a'),
new CharacterNode('b'),
new CharacterNode('c')
};
var rootNode = new ConcatenationNode(childNodes);
var target = new AnchorRemovalMutator();
// Act
var result = target.ApplyMutations(startOfLineNode, rootNode);
// Assert
var mutation = result.ShouldHaveSingleItem();
mutation.OriginalNode.ShouldBe(startOfLineNode);
mutation.ReplacementNode.ShouldBeNull();
mutation.ReplacementPattern.ShouldBe("(?#This is a comment.)abc");
mutation.DisplayName.ShouldBe("Regex anchor removal mutation");
mutation.Description.ShouldBe("Anchor \"^\" was removed at offset 22.");
}
public void ShouldRemoveEndOfStringNode()
{
// Arrange
var endOfStringNode = new EndOfStringNode();
var childNodes = new List <RegexNode>
{
new CharacterNode('a'),
new CharacterNode('b'),
new CharacterNode('c'),
endOfStringNode
};
var rootNode = new ConcatenationNode(childNodes);
var target = new AnchorRemovalMutator();
// Act
var result = target.ApplyMutations(endOfStringNode, rootNode);
// Assert
var mutation = result.ShouldHaveSingleItem();
mutation.OriginalNode.ShouldBe(endOfStringNode);
mutation.ReplacementNode.ShouldBeNull();
mutation.ReplacementPattern.ShouldBe("abc");
mutation.DisplayName.ShouldBe("Regex anchor removal mutation");
mutation.Description.ShouldBe("Anchor \"\\z\" was removed at offset 3.");
}
public void MutateShouldNotMutateNonAnchorNode()
{
// Arrange
var characterNode = new CharacterNode('a');
var rootNode = new ConcatenationNode(characterNode);
var target = new AnchorRemovalMutator();
// Act
var result = target.Mutate(characterNode, rootNode);
// Assert
result.ShouldBeEmpty();
}