code: def test_connected_caveman_graph():
      G = nx.connected_caveman_graph(4, 3)
      assert len(G) == 12
  
      G = nx.connected_caveman_graph(1, 5)
      K5 = nx.complete_graph(5)
      K5.remove_edge(3, 4)
      assert nx.is_isomorphic(G, K5)
  
      # need at least 2 nodes in each clique
      pytest.raises(nx.NetworkXError, nx.connected_caveman_graph, 4, 1)
  
imports: import pytest
  import networkx
label_desc: Use image node_id 4 for calling a global function with example usage: test_connected_caveman_graph() without return types