public void DescendantsAndSelfFromLeave()
{
var startNode = _tree[111112];
var result = HierarchyWalker.DescendantsAndSelf(startNode, n => n.Children).SingleOrDefault();
Assert.True(result != null);
Assert.True(result.NodeId == 111112);
}
public void DescendantsAndSelf()
{
var startNode = _tree[1111];
var expectedNodes = new[] { 1111, 11111, 11112, 11113, 111111, 111112 };
var result = HierarchyWalker.DescendantsAndSelf(startNode, n => n.Children);
var resultNodes = result.Select(n => n.NodeId).ToList();
Assert.True(expectedNodes.Length == resultNodes.Count);
Assert.True(expectedNodes.All(node => resultNodes.Contains(node)));
}