code: def test_constructor(self):
      board = deepchem.rl.envs.tictactoe.TicTacToeEnvironment()
      assert len(board.state) == 1
      assert board.state[0].shape == (3, 3, 2)
      assert np.sum(board.state[0]) == 1 or np.sum(board.state[0]) == 0
  
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 1 for calling the TestTicTacToeEnvironment obj's underlying member method code with example usage: obj.test_constructor() without return types