public void GetOrCreateNode_returns_child_of_startNode_as_destination()
{
// ARRANGE
var childNode = new Mock <NodeType>().Object;
var startNode = new Mock <NodeType>();
startNode
.Setup(n => n.TryGetChildNode("a"))
.Returns((true, childNode));
startNode
.Setup(n => n.ReplaceChild(childNode, childNode))
.Returns(startNode.Object);
var writer = new GetOrCreateNodeWriter <string, NodeType>(id => null);
// ACT
var result = writer.GetOrCreate(startNode.Object, HierarchyPath.Create("a"), out var descendentAt);
// ASSERT
Assert.Same(result, startNode.Object);
Assert.Same(childNode, descendentAt);
startNode.Verify(n => n.TryGetChildNode("a"), Times.Once());
startNode.Verify(n => n.ReplaceChild(childNode, childNode), Times.Once());
startNode.VerifyAll();
}
public void GetOrCreateNode_creates_child_of_startNode_as_destination()
{
// ARRANGE
var childNode = new Mock <NodeType>().Object;
var startNode = new Mock <NodeType>();
startNode
.Setup(n => n.TryGetChildNode("a"))
.Returns((false, null));
startNode
.Setup(n => n.AddChild(childNode))
.Returns(startNode.Object);
Func <string, NodeType> createChildCallback = id =>
{
Assert.Equal("a", id);
return(childNode);
};
var writer = new GetOrCreateNodeWriter <string, NodeType>(createChildCallback);
// ACT
var result = writer.GetOrCreate(startNode.Object, HierarchyPath.Create("a"), out var descendantAt);
// ASSERT
Assert.Same(result, startNode.Object);
Assert.Same(childNode, descendantAt);
startNode.Verify(n => n.AddChild(It.IsAny <NodeType>()), Times.Once());
}
public void GetOrCreateNode_returns_startNode_as_destination()
{
// ARRANGE
var startNode = new Mock <NodeType>();
var writer = new GetOrCreateNodeWriter <string, NodeType>(id => null);
// ACT
var result = writer.GetOrCreate(startNode.Object, HierarchyPath.Create <string>(), out var descendantAt);
// ASSERT
Assert.Same(result, startNode.Object);
Assert.Same(startNode.Object, descendantAt);
}
