code: def test_action_space_conversion(self):
      env = InterestEvolutionRecSimEnv(
          {"convert_to_discrete_action_space": True}
      )
      self.assertIsInstance(env.action_space, gym.spaces.Discrete)
      env.reset()
      action = env.action_space.sample()
      self.assertTrue(env.action_space.contains(action))
      new_obs, _, _, _, _ = env.step(action)
      self.assertTrue(env.observation_space.contains(new_obs))
  
file_path: ray/rllib/env/wrappers/tests/test_recsim_wrapper.py
imports: import gymnasium
  import unittest
  from ray.rllib.examples.env.recommender_system_envs_with_recsim import InterestEvolutionRecSimEnv
  from ray.rllib.env.wrappers.recsim import MultiDiscreteToDiscreteActionWrapper
  from ray.rllib.utils.error import UnsupportedSpaceException
label_desc: Use image node_id 2 for calling the TestRecSimWrapper obj's underlying member method code with example usage: obj.test_action_space_conversion() without return types