code: def test_ignore_selfloops(self):
      G = nx.complete_graph(5)
      G.add_edge(3, 3)
      cycle = nx_app.greedy_tsp(G)
      assert len(cycle) - 1 == len(G) == len(set(cycle))
  
imports: import random
  import pytest
  import networkx
  import networkx.algorithms.approximation
label_desc: Use image node_id 5 for calling the TestGreedyTSP obj's underlying member method code with example usage: obj.test_ignore_selfloops() without return types