code: def test_variables_params(_variables):
      assert (
          DatetimeFeatures(variables=_variables).variables == _variables
      )
  
imports: import numpy
  import pandas
  import pytest
  from sklearn.exceptions import NotFittedError
  from sklearn.pipeline import Pipeline
  from feature_engine.datetime import DatetimeFeatures
  from feature_engine.datetime._datetime_constants import FEATURES_DEFAULT, FEATURES_SUFFIXES, FEATURES_SUPPORTED
label_desc: Use image node_id 3 for calling a global function with example usage: test_variables_params(_variables) without return types