code: def test_error_if_both_capping_dicts_are_none():
      with pytest.raises(ValueError):
          ArbitraryOutlierCapper(
              min_capping_dict=None, max_capping_dict=None
          )
  
file_path: feature_engine/tests/test_outliers/test_arbitrary_capper.py
imports: import numpy
  import pandas
  import pytest
  from feature_engine.outliers import ArbitraryOutlierCapper
label_desc: Use image node_id 7 for calling a global function with example usage: test_error_if_both_capping_dicts_are_none() without return types