public void ListOfBSTDepthTest()
{
int[] arr = { 1, 2, 3, 4, 5, 6, 7 };
Node node = _treesAndGraphs.MinimalTree(arr);
List <LinkedList <Node> > result = _treesAndGraphs.ListOfBSTDepths(node);
List <LinkedList <Node> > expected = CreateListOfLinkedListsNodesFor_ListOfDepths();
Assert.IsTrue(IsNodesListsOfDeptshAreEqual(expected, result));
}