class_docstr: Make sure we can load various modules (agents, teachers, worlds).
class_docstr_tok: ["Make","sure","we","can","load","various","modules","(","agents",",","teachers",",","worlds",")","."]
code: def test_load_agent(self):
      for options in OPTION_CASES:
          agent_module = load_agent_module(options["agent"])
          self.assertEqual(agent_module, RepeatLabelAgent)
  
imports: import os
  import shutil
  import unittest
  import pytest
  from parlai.agents.repeat_label.repeat_label import RepeatLabelAgent
  import parlai.tasks.convai2.agents
  from parlai.tasks.convai2.worlds import InteractiveWorld, SelfChatWorld
  from parlai.core.loader import load_agent_module, load_task_module, load_teacher_module, load_world_module
  from parlai.core.worlds import DialogPartnerWorld
  import parlai.utils.testing
label_desc: Use image node_id 1 for calling the TestLoader obj's underlying member method code with example usage: obj.test_load_agent() without return types