code: def test_dict_rolling_maxshift_1(self):
      df_dict = {
          "a": pd.DataFrame(
              {"_value": [1, 2, 3, 4, 10, 11], "id": [1, 1, 1, 1, 2, 2]}
          ),
          "b": pd.DataFrame(
              {"_value": [5, 6, 7, 8, 12, 13], "id": [1, 1, 1, 1, 2, 2]}
          ),
      }
      df = dataframe_functions.roll_time_series(
          df_dict,
          column_id="id",
          column_sort=None,
          column_kind=None,
          rolling_direction=-1,
          max_timeshift=1,
          n_jobs=0,
      )
      """ df is
          {a: _value  id
                1.0   1
                2.0   1
                3.0   1
                4.0   1
               10.0   2
               11.0   2,
  
           b: _value  id
                 5.0   1
                 6.0   1
                 7.0   1
                 8.0   1
                12.0   2
                13.0   2
           }
          """
  
      correct_indices = [
          (1, 0),
          (1, 0),
          (1, 1),
          (1, 1),
          (1, 2),
          (1, 2),
          (1, 3),
          (2, 0),
          (2, 0),
          (2, 1),
      ]
  
      self.assertListEqual(list(df["a"]["id"].values), correct_indices)
      self.assertListEqual(list(df["b"]["id"].values), correct_indices)
  
      self.assertListEqual(
          list(df["a"]["_value"].values),
          [1.0, 2.0, 2.0, 3.0, 3.0, 4.0, 4.0, 10.0, 11.0, 11.0],
      )
      self.assertListEqual(
          list(df["b"]["_value"].values),
          [5.0, 6.0, 6.0, 7.0, 7.0, 8.0, 8.0, 12.0, 13.0, 13.0],
      )
  
imports: import warnings
  from unittest import TestCase
  import numpy
  import pandas
  from pandas.testing import assert_frame_equal, assert_series_equal
  from tests.fixtures import warning_free
  from tsfresh import extract_relevant_features
  from tsfresh.feature_extraction.settings import MinimalFCParameters
  from tsfresh.utilities import dataframe_functions
label_desc: Use image node_id 8 for calling the RollingTestCase obj's underlying member method code with example usage: obj.test_dict_rolling_maxshift_1() without return types