class_docstr: Unit test multi decorator Class
  TODO: Docstring
docstr: Unit test compute features import
docstr_tok: ["Unit","test","compute","features","import"]
code: def test_compute_features_import(self):
      """
      Unit test compute features import
      """
      backend = Mock()
      state = MultiDecorator(backend)
      contrib1 = pd.DataFrame([[-1, 2, -3, 4], [-5, 6, -7, 8]])
      contrib2 = pd.DataFrame([[1, -2, 3, -4], [5, -6, 7, -8]])
      state.compute_features_import([contrib1, contrib2])
      assert backend.compute_features_import.call_count == 2
  
imports: import unittest
  from unittest.mock import patch, Mock
  import numpy
  import pandas
  from shapash.explainer.multi_decorator import MultiDecorator
label_desc: Use image node_id 13 for calling the TestMultiDecorator obj's underlying member method code with example usage: obj.test_compute_features_import() without return types