docstr: Tests that the graph attribute dictionary of the two graphs
  is the same object.
code: def test_graph_attr_dict(self):
      """Tests that the graph attribute dictionary of the two graphs
      is the same object.
  
      """
      assert self.G.graph is self.H.graph
  
imports: import pytest
  import networkx
  from networkx.utils import edges_equal
label_desc: Use image node_id 8 for calling the TestEdgeSubGraph obj's underlying member method code with example usage: obj.test_graph_attr_dict() without return types