class_docstr: Mixin for testing actor-learner training.
  Inherit this after _TestTraining to enable test cases for batch training.
class_docstr_tok: ["Mixin","for","testing","actor-learner","training",".","Inherit","this","after","_TestTraining","to","enable","test","cases","for","batch","training","."]
code: def test_actor_learner_training_gpu(self):
      self._test_actor_learner_training(0, steps=100000)
  
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 2 for calling the _TestActorLearnerTrainingMixin obj's underlying member method code with example usage: obj.test_actor_learner_training_gpu() without return types