code: def test_asfreq(frame_or_series, index, freq):
      obj = frame_or_series(range(len(index)), index=index)
      idx_range = (
          date_range
          if isinstance(index, DatetimeIndex)
          else timedelta_range
      )
  
      result = obj.resample(freq).asfreq()
      new_index = idx_range(obj.index[0], obj.index[-1], freq=freq)
      expected = obj.reindex(new_index)
      tm.assert_almost_equal(result, expected)
  
imports: from datetime import datetime
  import numpy
  import pytest
  from pandas import DataFrame, DatetimeIndex, Index, MultiIndex, NaT, PeriodIndex, Series, TimedeltaIndex
  import pandas._testing
  from pandas.core.groupby.groupby import DataError
  from pandas.core.groupby.grouper import Grouper
  from pandas.core.indexes.datetimes import date_range
  from pandas.core.indexes.period import period_range
  from pandas.core.indexes.timedeltas import timedelta_range
  from pandas.core.resample import _asfreq_compat
label_desc: Use image node_id 1 for calling a global function with example usage: test_asfreq(frame_or_series, index, freq) without return types