old_contents: # coding=utf-8
  # Copyright 2019 The TensorFlow Datasets Authors.
  #
  # Licensed under the Apache License, Version 2.0 (the "License");
  # you may not use this file except in compliance with the License.
  # You may obtain a copy of the License at
  #
  #     http://www.apache.org/licenses/LICENSE-2.0
  #
  # Unless required by applicable law or agreed to in writing, software
  # distributed under the License is distributed on an "AS IS" BASIS,
  # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  # See the License for the specific language governing permissions and
  # limitations under the License.
  
  """Tests for lm1b dataset module."""
  
  from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  
  from tensorflow_datasets import testing
  import tensorflow_datasets.public_api as tfds
  from tensorflow_datasets.audio import librispeech 
  
  
  class LibrispeechTest(testing.DatasetBuilderTestCase):
    DATASET_CLASS = librispeech.Librispeech
    BUILDER_CONFIG_NAMES_TO_TEST = ["clean-100"]
    SPLITS = {
        "train": 2,
        "test": 1,
        "dev": 1,
    }
    
    DL_EXTRACT_RESULT = {
        tfds.Split.TRAIN: ["train-clean-100"],
        tfds.Split.TEST: ["test-clean"],
        tfds.Split.VALIDATION: ["dev-clean"],
    }
    
    
  class LibrispeechTest(testing.DatasetBuilderTestCase):
    DATASET_CLASS = librispeech.Librispeech
    BUILDER_CONFIG_NAMES_TO_TEST = ["clean-360"]
    SPLITS = {
        "train": 1,
        "test": 1,
        "dev": 1,
    }
    
    DL_EXTRACT_RESULT = {
        tfds.Split.TRAIN: ["train-clean-100", "train-clean-360"], 
        tfds.Split.TEST: ["test-clean"],
        tfds.Split.VALIDATION: ["dev-clean"],
    }  
  
  
  if __name__ == "__main__":
    testing.test_main()
  
new_contents: # coding=utf-8
  # Copyright 2019 The TensorFlow Datasets Authors.
  #
  # Licensed under the Apache License, Version 2.0 (the "License");
  # you may not use this file except in compliance with the License.
  # You may obtain a copy of the License at
  #
  #     http://www.apache.org/licenses/LICENSE-2.0
  #
  # Unless required by applicable law or agreed to in writing, software
  # distributed under the License is distributed on an "AS IS" BASIS,
  # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  # See the License for the specific language governing permissions and
  # limitations under the License.
  
  """Tests for librispeech dataset module."""
  
  from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  
  from tensorflow_datasets import testing
  import tensorflow_datasets.public_api as tfds
  from tensorflow_datasets.audio import librispeech 
  
  
  class LibrispeechTest(testing.DatasetBuilderTestCase):
    DATASET_CLASS = librispeech.Librispeech
    BUILDER_CONFIG_NAMES_TO_TEST = ["clean-100"]
    SPLITS = {
        "train": 2,
        "test": 1,
        "dev": 1,
    }
    
    DL_EXTRACT_RESULT = {
        tfds.Split.TRAIN: ["train-clean-100"],
        tfds.Split.TEST: ["test-clean"],
        tfds.Split.VALIDATION: ["dev-clean"],
    }
    
    
  class LibrispeechTest(testing.DatasetBuilderTestCase):
    DATASET_CLASS = librispeech.Librispeech
    BUILDER_CONFIG_NAMES_TO_TEST = ["clean-360"]
    SPLITS = {
        "train": 1,
        "test": 1,
        "dev": 1,
    }
    
    DL_EXTRACT_RESULT = {
        tfds.Split.TRAIN: ["train-clean-100", "train-clean-360"], 
        tfds.Split.TEST: ["test-clean"],
        tfds.Split.VALIDATION: ["dev-clean"],
    }  
  
  
  if __name__ == "__main__":
    testing.test_main()
  
subject: Update librispeech_test.py