code: def test_specs():
      return {"number_of_items": 50, "number_of_users": 20, "seed": 123}
  
file_path: recommenders/tests/unit/recommenders/datasets/test_sparse.py
imports: import pandas
  import numpy
  import pytest
  from recommenders.datasets.sparse import AffinityMatrix
  from recommenders.utils.constants import DEFAULT_USER_COL, DEFAULT_ITEM_COL, DEFAULT_RATING_COL, DEFAULT_TIMESTAMP_COL
label_desc: Use image node_id 1 for calling a global function with example usage: test_specs() and returns: dict