code: def test_shift_int(self, datetime_frame, frame_or_series):
      ts = tm.get_obj(datetime_frame, frame_or_series).astype(int)
      shifted = ts.shift(1)
      expected = ts.astype(float).shift(1)
      tm.assert_equal(shifted, expected)
  
imports: import numpy
  import pytest
  import pandas
  from pandas import CategoricalIndex, DataFrame, Index, NaT, Series, date_range, offsets
  import pandas._testing
label_desc: Use image node_id 7 for calling the TestDataFrameShift obj's underlying member method code with example usage: obj.test_shift_int(datetime_frame, frame_or_series) without return types