code: def testDebugDumpDir_invalidFileNamingPattern(self):
      # File name with too few underscores should lead to an exception.
      device_dir = os.path.join(
          self._dump_root,
          debug_data.METADATA_FILE_PREFIX
          + debug_data.DEVICE_TAG
          + ",job_localhost,replica_0,task_0,cpu_0",
      )
      os.makedirs(device_dir)
      open(os.path.join(device_dir, "node1_DebugIdentity_1234"), "wb")
  
      with self.assertRaisesRegex(
          ValueError, "does not conform to the naming pattern"
      ):
          debug_data.DebugDumpDir(self._dump_root)
  
imports: import os
  import platform
  import tempfile
  import numpy
  from tensorflow.core.framework import graph_pb2
  from tensorflow.core.framework import tensor_pb2
  from tensorflow.python.debug.lib import debug_data
  from tensorflow.python.framework import test_util
  from tensorflow.python.lib.io import file_io
  from tensorflow.python.platform import gfile
  from tensorflow.python.platform import googletest
  from tensorflow.python.platform import test
label_desc: Use image node_id 5 for calling the DebugDumpDirTest obj's underlying member method code with example usage: obj.testDebugDumpDir_invalidFileNamingPattern() without return types