code: def testSnapshotRecoveryFailsWithBadSplitNames(
      self, bad_split_filename
  ):
      cluster, _ = self.setup(num_workers=0)
      write_file(os.path.join(self.source_dir(), bad_split_filename))
      with self.assertRaisesRegex(
          ValueError,
          "Expected split_<local_split_index>_<global_split_index>",
      ):
          cluster.restart_dispatcher()
  
imports: import collections
  import os
  import pathlib
  import shutil
  import tempfile
  import time
  from absl.testing import parameterized
  from tensorflow.python.data.experimental.kernel_tests.service import test_base
  from tensorflow.python.data.experimental.ops import distributed_save_op
  from tensorflow.python.data.experimental.service import _pywrap_snapshot_utils
  from tensorflow.python.data.kernel_tests import test_base
  from tensorflow.python.data.ops import dataset_ops
  from tensorflow.python.data.ops import test_mode
  from tensorflow.python.framework import combinations
  from tensorflow.python.framework import errors
  from tensorflow.python.platform import test
label_desc: Use image node_id 12 for calling the SnapshotFtTest obj's underlying member method code with example usage: obj.testSnapshotRecoveryFailsWithBadSplitNames(bad_split_filename) without return types