code: def test_test_mode(self):
      (
          trial,
          trial_controller,
      ) = pytorch_utils.create_trial_and_trial_controller(
          trial_class=pytorch_onevar_model.OneVarTrial,
          hparams=self.hparams,
          trial_seed=self.trial_seed,
          test_mode=True,
      )
      trial_controller.run()
      assert trial_controller.state.batches_trained == 1
  
imports: import contextlib
  import importlib
  import io
  import os
  import pathlib
  import sys
  import typing
  from unittest import mock
  import numpy
  import pytest
  import torch
  from _pytest import monkeypatch
  from torch.distributed import launcher
  import determined
  from determined import pytorch
  from tests.experiment import pytorch_utils, utils
  from tests.experiment.fixtures import pytorch_onevar_model
label_desc: Use image node_id 35 for calling the TestPyTorchTrial obj's underlying member method code with example usage: obj.test_test_mode() without return types