code: def test_read_movielens_posters_df_no_local_file(
      os_path_exists_mock, movielens_posters_df
  ):
      os_path_exists_mock.return_value = False
  
      expected = movielens_posters_df
  
      try:
          actual = read_movielens_posters_df()
      except urllib.error.URLError:
          pytest.skip(
              "Internet connection not available - cannot run this test!"
          )
  
      pd.testing.assert_frame_equal(actual, expected)
  
file_path: collie/tests/test_movielens.py
imports: from unittest import mock
  import urllib
  import pandas
  import pytest
  from collie.movielens import get_recommendation_visualizations, read_movielens_posters_df, run_movielens_example
label_desc: Use image node_id 5 for calling a global function with example usage: test_read_movielens_posters_df_no_local_file(os_path_exists_mock, movielens_posters_df) without return types