code: def test_filename_from_content_disposition(
      content_disposition: str,
      filename: Optional[str],
  ):
      get_filename = downloader._filename_from_content_disposition
      assert get_filename(content_disposition) == filename
  
imports: import hashlib
  import io
  import os
  import tempfile
  from typing import Optional
  from unittest import mock
  import pytest
  import tensorflow
  from tensorflow_datasets import testing
  from tensorflow_datasets.core.download import downloader
  from tensorflow_datasets.core.download import resource
  from tensorflow_datasets.core.download import util
label_desc: Use image node_id 1 for calling a global function with example usage: test_filename_from_content_disposition(content_disposition, filename) without return types