code: def test_lollipop_graph_exceptions(self):
      # Raise NetworkXError if m<2
      pytest.raises(nx.NetworkXError, nx.lollipop_graph, -1, 2)
      pytest.raises(nx.NetworkXError, nx.lollipop_graph, 1, 20)
      pytest.raises(nx.NetworkXError, nx.lollipop_graph, "", 20)
      pytest.raises(nx.NetworkXError, nx.lollipop_graph, "a", 20)
  
      # Raise NetworkXError if n<0
      pytest.raises(nx.NetworkXError, nx.lollipop_graph, 5, -2)
  
      # raise NetworkXError if create_using is directed
      with pytest.raises(nx.NetworkXError):
          nx.lollipop_graph(2, 20, create_using=nx.DiGraph)
      with pytest.raises(nx.NetworkXError):
          nx.lollipop_graph(2, 20, create_using=nx.MultiDiGraph)
  
imports: import itertools
  import typing
  import pytest
  import networkx
  from networkx.algorithms.isomorphism.isomorph import graph_could_be_isomorphic
  from networkx.utils import edges_equal, nodes_equal
label_desc: Use image node_id 22 for calling the TestGeneratorClassic obj's underlying member method code with example usage: obj.test_lollipop_graph_exceptions() without return types