text: import pandas as pd
  import pytest
  
  import clean
  
  
  @pytest.fixture
  def pubs():
      return pd.DataFrame(data={
          'publications': [
              'aaaaaa',
              'a a a',
              'to by blah',
              'http://blah.com to by blah word',
              'some proper long publication that should be passed',
              'gev vt vk Ek 1MW'
          ],
          'domain': 6 * ['some_domain']
      })
  
  
  def test_clean_e2e(pubs):
      df = clean.clean(pubs, min_chars=6, min_words=3)
      assert df.shape[0] == 4
  