code: def test_convert_to_integers_raise(self):
      with pytest.raises(nx.NetworkXError):
          G = nx.Graph()
          H = nx.convert_node_labels_to_integers(
              G, ordering="increasing age"
          )
  
imports: import pytest
  import networkx
  from networkx.generators.classic import empty_graph
  from networkx.utils import edges_equal, nodes_equal
label_desc: Use image node_id 3 for calling the TestRelabel obj's underlying member method code with example usage: obj.test_convert_to_integers_raise() without return types