code: def test_get_O_move(self):
      board = deepchem.rl.envs.tictactoe.TicTacToeEnvironment()
      empty = deepchem.rl.envs.tictactoe.TicTacToeEnvironment.EMPTY
      move = board.get_O_move()
      assert np.all(board.state[0][move[0]][move[1]] == empty)
  
file_path: deepchem/deepchem/rl/envs/test_tictactoe.py
imports: from unittest import TestCase
  import numpy
  import deepchem.rl.envs.tictactoe
label_desc: Use image node_id 6 for calling the TestTicTacToeEnvironment obj's underlying member method code with example usage: obj.test_get_O_move() without return types