code: def test_star_like(self):
      # star-like
  
      G = nx.star_graph(2)
      G.add_edge(1, 2)
      assert sb(G) == pytest.approx(0.843, abs=1e-3)
  
      G = nx.star_graph(3)
      G.add_edge(1, 2)
      assert sb(G) == pytest.approx(0.871, abs=1e-3)
  
      G = nx.star_graph(4)
      G.add_edge(1, 2)
      assert sb(G) == pytest.approx(0.890, abs=1e-3)
  
imports: import pytest
  import networkx
  from networkx.algorithms.bipartite import spectral_bipartivity
label_desc: Use image node_id 1 for calling the TestSpectralBipartivity obj's underlying member method code with example usage: obj.test_star_like() without return types