code: def test_training_gpu_fast(self):
      self._test_training(0, steps=10, require_success=False)
      self._test_training(
          0, steps=0, load_model=True, require_success=False
      )
  
imports: import logging
  import os
  import tempfile
  from unittest import mock
  import numpy
  import pytest
  import pfrl
  from pfrl.experiments import train_agent_async, train_agent_batch_with_evaluation, train_agent_with_evaluation
  from pfrl.experiments.evaluator import batch_run_evaluation_episodes, run_evaluation_episodes
  from pfrl.utils import random_seed
label_desc: Use image node_id 7 for calling the _TestTraining obj's underlying member method code with example usage: obj.test_training_gpu_fast() without return types