public void AddNodeShouldCopyNodeAndAddNewRegexNode()
{
// Arrange
var target = new TestRegexNode(new List <RegexNode> {
new CharacterNode('a'), new CharacterNode('b')
});
var newNode = new CharacterNode('c');
// Act
RegexNode result = target.AddNode(newNode);
// Assert
result.ChildNodes.Count().ShouldBe(3);
result.ChildNodes.Last().ShouldBe(newNode);
}
public void AddNodeResultShouldNotHaveReferenceToOriginalPrefix()
{
// Arrange
var prefix = new CommentGroupNode("This is a prefix.");
var target = new TestRegexNode {
Prefix = prefix
};
var newNode = new TestRegexNode();
// Act
RegexNode result = target.AddNode(newNode);
// Assert
result.Prefix.ShouldNotBe(target.Prefix);
}
public void AddNodeShouldCopyPrefix()
{
// Arrange
var prefix = new CommentGroupNode("This is a prefix.");
var target = new TestRegexNode {
Prefix = prefix
};
var newNode = new TestRegexNode();
// Act
RegexNode result = target.AddNode(newNode);
// Assert
result.Prefix.ToString().ShouldBe(target.Prefix.ToString());
}
public void AddNodeShouldHaveNoReferencesToTheOriginalTreeNodes()
{
// Arrange
var charNodeA = new CharacterNode('a');
var charNodeB = new CharacterNode('b');
var childNodes = new List <RegexNode> {
charNodeA, charNodeB
};
var target = new TestRegexNode(childNodes);
var newNode = new CharacterNode('c');
// Act
RegexNode result = target.AddNode(newNode);
// Assert
result.ShouldNotBe(target);
result.ChildNodes.ShouldNotContain(charNodeA);
result.ChildNodes.ShouldNotContain(charNodeB);
}
public void AddNodeShouldNotReturnRootNodeIfReturnRootIsFalse()
{
// Arrange
var targetChildNodes = new List <RegexNode> {
new CharacterNode('a'), new CharacterNode('b')
};
var target = new TestRegexNode(targetChildNodes);
var targetParent = new TestRegexNode(target);
_ = new TestRegexNode(targetParent);
var newNode = new CharacterNode('c');
// Act
RegexNode result = target.AddNode(newNode, false);
// Assert
result.ChildNodes.Count().ShouldBe(3);
result.ChildNodes.Last().ShouldBe(newNode);
}
public void AddNodeShouldCopyDescendants()
{
// Arrange
var grandChildConcatNode = new ConcatenationNode(new List <RegexNode> {
new CharacterNode('d'), new CharacterNode('e')
});
var childConcatNode = new ConcatenationNode(new List <RegexNode> {
grandChildConcatNode, new CharacterNode('a'), new CharacterNode('b')
});
var target = new TestRegexNode(childConcatNode);
var newNode = new CharacterNode('c');
// Act
RegexNode result = target.AddNode(newNode);
// Assert
result.ChildNodes.Count().ShouldBe(2);
result.ChildNodes.First().ChildNodes.Count().ShouldBe(3);
result.ChildNodes.First().ChildNodes.First().ChildNodes.Count().ShouldBe(2);
}
public void AddNodeShouldReturnRootNode()
{
// Arrange
var targetChildNodes = new List <RegexNode> {
new CharacterNode('a'), new CharacterNode('b')
};
var target = new TestRegexNode(targetChildNodes);
var targetParent = new TestRegexNode(target);
_ = new TestRegexNode(targetParent);
var newNode = new CharacterNode('c');
// Act
RegexNode result = target.AddNode(newNode);
// Assert
var copiedTargetParent = result.ChildNodes.ShouldHaveSingleItem();
var modifiedTarget = copiedTargetParent.ChildNodes.ShouldHaveSingleItem();
modifiedTarget.ChildNodes.Count().ShouldBe(3);
modifiedTarget.ChildNodes.Last().ShouldBe(newNode);
}
