code: def test_example_1():
      G = graph_example_1()
      _check_connectivity(G)
  
imports: import pytest
  import networkx
  from networkx.algorithms.approximation import k_components
  from networkx.algorithms.approximation.kcomponents import _AntiGraph, _same
label_desc: Use image node_id 6 for calling a global function with example usage: test_example_1() without return types