code: def testInitializeCheckpointingWhenCheckpointUnbundleFails(
      self,
      mock_logger_constructor,
      mock_checkpointer_constructor,
      mock_get_latest,
  ):
      mock_checkpointer = _create_mock_checkpointer()
      mock_checkpointer_constructor.return_value = mock_checkpointer
      latest_checkpoint = 7
      mock_get_latest.return_value = latest_checkpoint
      agent = mock.Mock()
      agent.unbundle.return_value = False
      mock_logger = mock.Mock()
      mock_logger_constructor.return_value = mock_logger
      runner = run_experiment.Runner(
          self._test_subdir,
          lambda x, y, summary_writer: agent,
          mock.Mock,
      )
      self.assertEqual(0, runner._start_iteration)
      self.assertEqual(1, mock_checkpointer.load_checkpoint.call_count)
      self.assertEqual(1, agent.unbundle.call_count)
      mock_args, _ = agent.unbundle.call_args
      self.assertEqual(
          "{}/checkpoints".format(self._test_subdir), mock_args[0]
      )
      self.assertEqual(latest_checkpoint, mock_args[1])
      expected_dictionary = {"current_iteration": 1729, "logs": "logs"}
      self.assertDictEqual(expected_dictionary, mock_args[2])
  
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  import os
  import shutil
  from absl import flags
  from dopamine.agents.dqn import dqn_agent
  from dopamine.agents.implicit_quantile import implicit_quantile_agent
  from dopamine.agents.rainbow import rainbow_agent
  from dopamine.discrete_domains import checkpointer
  from dopamine.discrete_domains import logger
  from dopamine.discrete_domains import run_experiment
  from dopamine.metrics import collector_dispatcher
  from dopamine.metrics import statistics_instance
  import gin.tf
  import mock
  import tensorflow
label_desc: Use image node_id 4 for calling the RunnerTest obj's underlying member method code with example usage: obj.testInitializeCheckpointingWhenCheckpointUnbundleFails(mock_logger_constructor, mock_checkpointer_constructor, mock_get_latest) without return types