code: def setUp(self):
      super(TicTacToeEnvironmentTest, self).setUp()
      np.random.seed(0)
      self.discount = np.asarray(1.0, dtype=np.float32)
      self.env = TicTacToeEnvironment()
      ts = self.env.reset()
      np.testing.assert_array_equal(
          np.zeros((3, 3), np.int32), ts.observation
      )
  
file_path: agents/tf_agents/environments/examples/tic_tac_toe_environment_test.py
imports: import numpy
  from tf_agents.environments import utils
  from tf_agents.environments.examples.tic_tac_toe_environment import TicTacToeEnvironment
  from tf_agents.trajectories.time_step import StepType
  from tf_agents.trajectories.time_step import TimeStep
  from tf_agents.utils import test_utils
label_desc: Use image node_id 1 for calling the TicTacToeEnvironmentTest obj's underlying member method code with example usage: obj.setUp() without return types