code: def test_space_config():
      """perception unit test"""
  
      # init structured env
      env = build_dummy_structured_env()
  
      # init space config
      space_config = SpacesConfig(
          action_spaces_dict=env.action_spaces_dict,
          observation_spaces_dict=env.observation_spaces_dict,
          agent_counts_dict=env.agent_counts_dict,
      )
  
      # dump and reload
      dump_file = "tmp_space_config.pkl"
      space_config.save(dump_file)
      assert os.path.exists(dump_file)
      space_config.load(dump_file)
      os.remove(dump_file)
  
imports: import os
  from maze.perception.models.space_config import SpacesConfig
  from maze.test.shared_test_utils.helper_functions import build_dummy_structured_env
label_desc: Use image node_id 1 for calling a global function with example usage: test_space_config() without return types