code: def test_step(atari_env):
      result = atari_env.step(0)
  
file_path: coach/rl_coach/tests/environments/test_gym_environment.py
imports: import os
  import sys
  import pytest
  from rl_coach.environments.gym_environment import GymEnvironment
  from rl_coach.base_parameters import VisualizationParameters
  import numpy
  from rl_coach.spaces import DiscreteActionSpace, BoxActionSpace, ImageObservationSpace, VectorObservationSpace
label_desc: Use image node_id 5 for calling a global function with example usage: test_step(atari_env) without return types