code: def test_ordering_guard(self):
      self._write_tfrecord("train", 4, "abcdefghijkl")
      filename_template = self._filename_template(split="train")
      instructions = [
          shard_utils.FileInstruction(
              filename=filename_template.sharded_filepath(
                  shard_index=1, num_shards=4
              ),
              skip=0,
              take=-1,
              examples_in_shard=3,
          ),
      ]
      reported_warnings = []
      with mock.patch("absl.logging.warning", reported_warnings.append):
          self.reader.read_files(
              instructions,
              read_config=read_config_lib.ReadConfig(
                  interleave_cycle_length=16,
                  enable_ordering_guard=False,
              ),
              shuffle_files=True,
              disable_shuffling=True,
          )
          expected_warning = (
              _SHUFFLE_FILES_ERROR_MESSAGE
              + "\n"
              + _CYCLE_LENGTH_ERROR_MESSAGE
          )
          self.assertIn(expected_warning, reported_warnings)
  
imports: import functools
  import itertools
  import os
  from unittest import mock
  import tensorflow
  import tensorflow_datasets
  from tensorflow_datasets import testing
  from tensorflow_datasets.core import example_parser
  from tensorflow_datasets.core import naming
  from tensorflow_datasets.core import reader
  from tensorflow_datasets.core import splits
  from tensorflow_datasets.core import writer
  from tensorflow_datasets.core.utils import read_config
  from tensorflow_datasets.core.utils import shard_utils
label_desc: Use image node_id 15 for calling the ReaderTest obj's underlying member method code with example usage: obj.test_ordering_guard() without return types