class_docstr: Test that zoo files import as expected.
class_docstr_tok: ["Test","that","zoo","files","import","as","expected","."]
code: def test_zoo_no_exists(self):
      with self.assertRaises(ImportError):
          testing_utils.display_model(
              {
                  "model_file": "zoo:unittests/fake",
                  "task": "integration_tests",
              }
          )
      with self.assertRaises(ImportError):
          testing_utils.display_model(
              {
                  "model_file": "zoo:fakemodel",
                  "task": "integration_tests",
              }
          )
  
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 TestZoo obj's underlying member method code with example usage: obj.test_zoo_no_exists() without return types