code: def test_exceptions(self):
      # NX graph
      class G:
          adj = None
  
      pytest.raises(nx.NetworkXError, to_networkx_graph, G)
  
      # pygraphviz  agraph
      class G:
          is_strict = None
  
      pytest.raises(nx.NetworkXError, to_networkx_graph, G)
  
      # Dict of [dicts, lists]
      G = {"a": 0}
      pytest.raises(TypeError, to_networkx_graph, G)
  
      # list or generator of edges
      class G:
          next = None
  
      pytest.raises(nx.NetworkXError, to_networkx_graph, G)
  
      # no match
      pytest.raises(nx.NetworkXError, to_networkx_graph, "a")
  
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 3 for calling the TestConvert obj's underlying member method code with example usage: obj.test_exceptions() without return types