code: def test_smoke_empty_graph(self):
      G = []
      nx.random_layout(G)
      nx.circular_layout(G)
      nx.planar_layout(G)
      nx.spring_layout(G)
      nx.fruchterman_reingold_layout(G)
      nx.spectral_layout(G)
      nx.shell_layout(G)
      nx.bipartite_layout(G, G)
      nx.spiral_layout(G)
      nx.multipartite_layout(G)
      nx.kamada_kawai_layout(G)
  
imports: import pytest
  import networkx
label_desc: Use image node_id 4 for calling the TestLayout obj's underlying member method code with example usage: obj.test_smoke_empty_graph() without return types