code: def test_setitem_cache_updating_slices(
      self, using_copy_on_write, warn_copy_on_write
  ):
      # GH 7084
      # not updating cache on series setting with slices
      expected = DataFrame(
          {"A": [600, 600, 600]},
          index=date_range("5/7/2014", "5/9/2014"),
      )
      out = DataFrame(
          {"A": [0, 0, 0]}, index=date_range("5/7/2014", "5/9/2014")
      )
      df = DataFrame({"C": ["A", "A", "A"], "D": [100, 200, 300]})
  
      # loop through df to update out
      six = Timestamp("5/7/2014")
      eix = Timestamp("5/9/2014")
      for ix, row in df.iterrows():
          out.loc[six:eix, row["C"]] = (
              out.loc[six:eix, row["C"]] + row["D"]
          )
  
      tm.assert_frame_equal(out, expected)
      tm.assert_series_equal(out["A"], expected["A"])
  
      # try via a chain indexing
      # this actually works
      out = DataFrame(
          {"A": [0, 0, 0]}, index=date_range("5/7/2014", "5/9/2014")
      )
      out_original = out.copy()
      for ix, row in df.iterrows():
          v = out[row["C"]][six:eix] + row["D"]
          with tm.raises_chained_assignment_error(
              (ix == 0) or warn_copy_on_write or using_copy_on_write
          ):
              out[row["C"]][six:eix] = v
  
      if not using_copy_on_write:
          tm.assert_frame_equal(out, expected)
          tm.assert_series_equal(out["A"], expected["A"])
      else:
          tm.assert_frame_equal(out, out_original)
          tm.assert_series_equal(out["A"], out_original["A"])
  
      out = DataFrame(
          {"A": [0, 0, 0]}, index=date_range("5/7/2014", "5/9/2014")
      )
      for ix, row in df.iterrows():
          out.loc[six:eix, row["C"]] += row["D"]
  
      tm.assert_frame_equal(out, expected)
      tm.assert_series_equal(out["A"], expected["A"])
  
imports: from string import ascii_letters
  import numpy
  import pytest
  from pandas.errors import SettingWithCopyError, SettingWithCopyWarning
  import pandas
  from pandas import DataFrame, Index, Series, Timestamp, date_range, option_context
  import pandas._testing
label_desc: Use image node_id 3 for calling the TestCaching obj's underlying member method code with example usage: obj.test_setitem_cache_updating_slices(using_copy_on_write, warn_copy_on_write) without return types