code: def test_heuristic_lunar_lander_policy():
      """unit tests"""
      policy = HeuristicLunarLanderPolicy()
      env = GymMazeEnv("LunarLander-v2")
  
      obs = env.reset()
      action = policy.compute_action(obs)
      obs, _, _, _ = env.step(action)
  
label_desc: Use image node_id 1 for calling a global function with example usage: test_heuristic_lunar_lander_policy() without return types