code: def test_shift_with_offsets_freq(self):
      df = DataFrame(
          {"x": [1, 2, 3]}, index=date_range("2000", periods=3)
      )
      shifted = df.shift(freq="1MS")
      expected = DataFrame(
          {"x": [1, 2, 3]},
          index=date_range(
              start="02/01/2000", end="02/01/2000", periods=3
          ),
      )
      tm.assert_frame_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 36 for calling the TestDataFrameShift obj's underlying member method code with example usage: obj.test_shift_with_offsets_freq() without return types