code: def testInitializeCheckpointingWithNoCheckpointFile(
      self, mock_get_latest
  ):
      mock_get_latest.return_value = -1
      base_dir = "/does/not/exist"
      with self.assertRaisesRegex(
          tf.errors.PermissionDeniedError, ".*/does.*"
      ):
          run_experiment.Runner(
              base_dir, self._create_agent_fn, mock.Mock
          )
  
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 3 for calling the RunnerTest obj's underlying member method code with example usage: obj.testInitializeCheckpointingWithNoCheckpointFile(mock_get_latest) without return types