code: def test_get_indexer_pad_requires_monotonicity(self):
      rng = date_range("1/1/2000", "3/1/2000", freq="B")
  
      # neither monotonic increasing or decreasing
      rng2 = rng[[1, 0, 2]]
  
      msg = "index must be monotonic increasing or decreasing"
      with pytest.raises(ValueError, match=msg):
          rng2.get_indexer(rng, method="pad")
  
imports: from datetime import date, datetime, time, timedelta
  import numpy
  import pytest
  from pandas._libs import index
  from pandas.compat.numpy import np_long
  import pandas
  from pandas import DatetimeIndex, Index, Timestamp, bdate_range, date_range, notna
  import pandas._testing
  from pandas.tseries.frequencies import to_offset
label_desc: Use image node_id 5 for calling the TestGetIndexer obj's underlying member method code with example usage: obj.test_get_indexer_pad_requires_monotonicity() without return types