code: def test_clipping(self):
      _, _, rewards, _ = self.init_batch_and_play(
          TEST_ENV_NAME, steps_per_epoch=2
      )
      self.assertTrue(np.max(rewards) == 1)
      self.assertTrue(np.min(rewards) == -1)
  
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  import os
  import shutil
  import gym
  from gym.spaces import Box
  from gym.spaces import Discrete
  import numpy
  from tensor2tensor.data_generators import gym_env
  from tensor2tensor.data_generators import problem
  from tensor2tensor.rl.gym_utils import make_gym_env
  import tensorflow.compat.v1
label_desc: Use image node_id 10 for calling the GymEnvTest obj's underlying member method code with example usage: obj.test_clipping() without return types