code: def test_size(self):
      for G, A in self.GA:
          n = G.order()
          s = len(list(G.edges())) + len(list(A.edges()))
          assert s == (n * (n - 1)) / 2
  
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 2 for calling the TestAntiGraph obj's underlying member method code with example usage: obj.test_size() without return types