public void CanAddGrandGrandChild()
{
var parent = new TestTreeEntry {Name = "parent"};
var child = new TestTreeEntry {Name = "child"};
var grandChild = new TestTreeEntry {Name = "grandChild"};
var grandGrandChild = new TestTreeEntry {Name = "grandGrandChild"};
parent.AddChild(child);
child.AddChild(grandChild);
grandChild.AddChild(grandGrandChild);
parent.IsParentOf(child);
parent.IsAncestorOf(grandChild);
parent.IsAncestorOf(grandGrandChild);
child.IsParentOf(grandChild);
child.IsAncestorOf(grandGrandChild);
grandChild.IsParentOf(grandGrandChild);
}