code: def test_default_scale_and_center(self):
      sc = self.check_scale_and_center
      c = (0, 0)
      G = nx.complete_graph(9)
      G.add_node(9)
      sc(nx.random_layout(G), scale=0.5, center=(0.5, 0.5))
      sc(nx.spring_layout(G), scale=1, center=c)
      sc(nx.spectral_layout(G), scale=1, center=c)
      sc(nx.circular_layout(G), scale=1, center=c)
      sc(nx.shell_layout(G), scale=1, center=c)
      sc(nx.spiral_layout(G), scale=1, center=c)
      sc(nx.kamada_kawai_layout(G), scale=1, center=c)
  
      c = (0, 0, 0)
      sc(nx.kamada_kawai_layout(G, dim=3), scale=1, center=c)
  
imports: import pytest
  import networkx
label_desc: Use image node_id 11 for calling the TestLayout obj's underlying member method code with example usage: obj.test_default_scale_and_center() without return types