code: def test_download(self, tmpdir):
      dataset = wikimedia.Wikinews(data_dir=str(tmpdir))
      dataset.download()
      assert os.path.isfile(dataset.filepath)
  
imports: import os
  import re
  import pytest
  from textacy.datasets import wikimedia
label_desc: Use image node_id 1 for calling the TestWikinews obj's underlying member method code with example usage: obj.test_download(tmpdir) without return types