public void AddLinkUndoBeforeExecute()
{
var dict = BuildTestTree();
AddLinkCommand command = new AddLinkCommand(new NullDb(), dict["Node 1.1"], dict["Node 2.2"]);
command.Undo();
}
public void AddLinkAndUndo()
{
var dict = BuildTestTree();
AddLinkCommand command = new AddLinkCommand(new NullDb(), dict["Node 1.1"], dict["Node 2.2"]);
Assert.AreEqual(defaultTestTree, StringifyTree(dict["Problem"]));
Assert.AreEqual(1, dict["Node 2.2"].CountParentNodes());
command.Execute();
Assert.AreEqual("Problem,Node 1,Node 1.1,Node 2.2,Node 1.2,Node 2,Node 2.1,Node 2.1.1,Node 2.2", StringifyTree(dict["Problem"]));
Assert.AreEqual(2, dict["Node 2.2"].CountParentNodes());
Assert.AreEqual(true, command.Executed);
command.Undo();
Assert.AreEqual(1, dict["Node 2.2"].CountParentNodes());
Assert.AreEqual(defaultTestTree, StringifyTree(dict["Problem"]));
Assert.AreEqual(false, command.Executed);
}