code: def setUp(self):
      # override input() with our fake, deterministic output
      patcher = mock.patch("builtins.input", new=FakeInput())
      self.addCleanup(patcher.stop)
      patcher.start()
  
imports: import unittest
  from unittest import mock
  import os
  from parlai.scripts.interactive import Interactive
  from parlai.scripts.safe_interactive import SafeInteractive
  import parlai.utils.conversations
  import parlai.utils.testing
label_desc: Use image node_id 1 for calling the TestInteractiveConvai2 obj's underlying member method code with example usage: obj.setUp() without return types