class_docstr: Kaldi dir meta data IO test
code: def setUp(self):
      super().setUp()
  
file_path: delta/delta/utils/kaldi/kaldi_dir_test.py
imports: import os
  from absl import logging
  import delta.compat
  from delta.utils.kaldi import kaldi_dir
  from delta.utils.kaldi.kaldi_dir_utils import gen_dummy_meta
label_desc: Use image node_id 1 for calling the KaldiDirTest obj's underlying member method code with example usage: obj.setUp() without return types