code: def test_get_local_contributions(self, mock_format_contrib):
      mock_format_contrib.return_value = [0, 4]
      res = self.test_backend.get_local_contributions(
          pd.DataFrame([0]), dict(contributions=[np.array([0])])
      )
      assert res == [0, 4]
  
imports: import unittest
  from unittest.mock import patch
  import types
  import numpy
  import pandas
  import category_encoders
  from sklearn.ensemble import RandomForestRegressor, RandomForestClassifier
  from pandas.testing import assert_frame_equal, assert_series_equal
  from shapash.backend.base_backend import BaseBackend, _needs_preprocessing
  from shapash.explainer.smart_state import SmartState
label_desc: Use image node_id 5 for calling the TestBaseBackend obj's underlying member method code with example usage: obj.test_get_local_contributions(mock_format_contrib) without return types