code: def test_attribute_dict_integrity(self):
      # we must not replace dict-like graph data structures with dicts
      G = nx.Graph()
      G.add_nodes_from("abc")
      H = to_networkx_graph(G, create_using=nx.Graph)
      assert list(H.nodes) == list(G.nodes)
      H = nx.DiGraph(G)
      assert list(H.nodes) == list(G.nodes)
  
imports: import pytest
  import networkx
  from networkx.convert import from_dict_of_dicts, from_dict_of_lists, to_dict_of_dicts, to_dict_of_lists, to_networkx_graph
  from networkx.generators.classic import barbell_graph, cycle_graph
  from networkx.utils import edges_equal, graphs_equal, nodes_equal
label_desc: Use image node_id 9 for calling the TestConvert obj's underlying member method code with example usage: obj.test_attribute_dict_integrity() without return types