code: def date_range_frame():
      """
      Fixture for DataFrame of ints with date_range index
  
      Columns are ['A', 'B'].
      """
      N = 50
      rng = date_range("1/1/1990", periods=N, freq="53s")
      return DataFrame(
          {"A": np.arange(N), "B": np.arange(N)}, index=rng
      )
  
file_path: pandas/pandas/tests/frame/methods/test_asof.py
imports: import numpy
  import pytest
  from pandas._libs.tslibs import IncompatibleFrequency
  from pandas import DataFrame, Period, Series, Timestamp, date_range, period_range, to_datetime
  import pandas._testing
label_desc: Use image node_id 1 for calling a global function with example usage: date_range_frame() and returns: DataFrame