public void ShouldUnnegateNegatedShorthand()
{
// Arrange
var shorthandNode = new CharacterClassShorthandNode('D');
var childNodes = new List <RegexNode>
{
shorthandNode,
new CharacterNode('a'),
new CharacterNode('b'),
new CharacterNode('c')
};
var rootNode = new ConcatenationNode(childNodes);
var target = new CharacterClassShorthandNegationMutator();
// Act
var result = target.ApplyMutations(shorthandNode, rootNode);
// Assert
var mutation = result.ShouldHaveSingleItem();
mutation.OriginalNode.ShouldBe(shorthandNode);
mutation.ReplacementNode.ToString().ShouldBe("\\d");
mutation.ReplacementPattern.ShouldBe("\\dabc");
mutation.DisplayName.ShouldBe("Regex character class shorthand negation mutation");
mutation.Description.ShouldBe("Character class shorthand \"\\D\" was replaced with \"\\d\" at offset 0.");
}
public void MutateShouldNotMutateNonCharacterClassShorthandNode()
{
// Arrange
var characterNode = new CharacterNode('a');
var rootNode = new ConcatenationNode(characterNode);
var target = new CharacterClassShorthandNegationMutator();
// Act
var result = target.Mutate(characterNode, rootNode);
// Assert
result.ShouldBeEmpty();
}