code: def test_only_target():
      G = nx.complete_graph(5)
      pytest.raises(nx.NetworkXError, approx.node_connectivity, G, t=0)
  
imports: import pytest
  import networkx
  from networkx.algorithms import approximation
label_desc: Use image node_id 9 for calling a global function with example usage: test_only_target() without return types