code: def test_is_equitable(self):
      G = nx.Graph()
      G.add_edges_from([(0, 1), (1, 2)])
      coloring = {0: 0, 1: 1, 2: 0}
      assert is_equitable(G, coloring)
  
      G.add_edges_from([(2, 3), (2, 4), (2, 5)])
      coloring[3] = 1
      coloring[4] = 1
      coloring[5] = 1
      assert is_coloring(G, coloring)
      assert not is_equitable(G, coloring)
  
imports: import itertools
  import pytest
  import networkx
label_desc: Use image node_id 8 for calling the TestColoring obj's underlying member method code with example usage: obj.test_is_equitable() without return types