code: def test_to_csv_cols_reordering(self):
      # GH3454
      chunksize = 5
      N = int(chunksize * 2.5)
  
      df = DataFrame(
          np.ones((N, 3)),
          index=Index([f"i-{i}" for i in range(N)], name="a"),
          columns=Index([f"i-{i}" for i in range(3)], name="a"),
      )
      cs = df.columns
      cols = [cs[2], cs[0]]
  
      with tm.ensure_clean() as path:
          df.to_csv(path, columns=cols, chunksize=chunksize)
          rs_c = read_csv(path, index_col=0)
  
      tm.assert_frame_equal(df[cols], rs_c, check_names=False)
  
imports: import csv
  from io import StringIO
  import os
  import numpy
  import pytest
  from pandas.errors import ParserError
  import pandas
  from pandas import DataFrame, Index, MultiIndex, NaT, Series, Timestamp, date_range, period_range, read_csv, to_datetime
  import pandas._testing
  import pandas.core.common
  from pandas.io.common import get_handle
label_desc: Use image node_id 7 for calling the TestDataFrameToCSV obj's underlying member method code with example usage: obj.test_to_csv_cols_reordering() without return types