code: def test_find_negative_cycle_no_cycle(self):
      G = nx.path_graph(5, create_using=nx.DiGraph())
      pytest.raises(nx.NetworkXError, nx.find_negative_cycle, G, 3)
  
imports: import pytest
  import networkx
  from networkx.utils import pairwise
label_desc: Use image node_id 9 for calling the TestBellmanFordAndGoldbergRadzik obj's underlying member method code with example usage: obj.test_find_negative_cycle_no_cycle() without return types