code: def test_mock_movielens_data__no_name_collision():
      """
      Making sure that no common names are shared between the mock and real dataset sizes
      """
      dataset_name = set(DATA_FORMAT.keys())
      dataset_name_mock = set(MOCK_DATA_FORMAT.keys())
      collision = dataset_name.intersection(dataset_name_mock)
      assert not collision
  
imports: import os
  import gc
  import pandas
  from pandas.core.series import Series
  import pytest
  from pytest_mock import MockerFixture
  from recommenders.utils.constants import DEFAULT_GENRE_COL, DEFAULT_TITLE_COL
  from recommenders.datasets.movielens import MockMovielensSchema
  from recommenders.datasets.movielens import load_pandas_df, load_spark_df, load_item_df, download_movielens, extract_movielens
  from recommenders.datasets.movielens import DATA_FORMAT, MOCK_DATA_FORMAT, DEFAULT_HEADER, DEFAULT_ITEM_COL, DEFAULT_USER_COL
label_desc: Use image node_id 5 for calling a global function with example usage: test_mock_movielens_data__no_name_collision() without return types