code: def test_asadpour_empty_graph():
      """
      Test the asadpour_atsp function with an empty graph
      """
      G = nx.DiGraph()
  
      pytest.raises(nx.NetworkXError, nx_app.asadpour_atsp, G)
  
imports: import random
  import pytest
  import networkx
  import networkx.algorithms.approximation
label_desc: Use image node_id 22 for calling a global function with example usage: test_asadpour_empty_graph() without return types