code: def test_get_info(self):
      cartpole_env = gym.spec("CartPole-v1").make()
      env = gym_wrapper.GymWrapper(cartpole_env)
      self.assertIsNone(env.get_info())
      env.reset()
      self.assertIsNone(None, env.get_info())
      env.step(np.array(0, dtype=np.int32))
      self.assertEqual({}, env.get_info())
  
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  import math
  from absl.testing.absltest import mock
  import gym
  import gym.spaces
  import numpy
  from tf_agents.environments import gym_wrapper
  from tf_agents.utils import test_utils
label_desc: Use image node_id 5 for calling the GymWrapperOnCartpoleTest obj's underlying member method code with example usage: obj.test_get_info() without return types