code: def test_context_managers_one_context(self, mock_stdout):
      with ContextManagers([context_en()]):
          print("Transformers are awesome!")
      # The output should be wrapped with an English welcome and goodbye
      self.assertEqual(
          mock_stdout.getvalue(),
          "Welcome!\nTransformers are awesome!\nBye!\n",
      )
  
file_path: H2O/h2o_flexgen/benchmark/third_party/transformers/tests/utils/test_file_utils.py
imports: import contextlib
  import importlib
  import io
  import unittest
  import transformers
  from transformers import *
  from transformers.testing_utils import DUMMY_UNKNOWN_IDENTIFIER
  from transformers.utils import ContextManagers, find_labels, is_flax_available, is_tf_available, is_torch_available
label_desc: Use image node_id 2 for calling the GenericUtilTests obj's underlying member method code with example usage: obj.test_context_managers_one_context(mock_stdout) without return types