code: def test_column_dups_indexes(self):
      # check column dups with index equal and not equal to df's index
      df = DataFrame(
          np.random.default_rng(2).standard_normal((5, 3)),
          index=["a", "b", "c", "d", "e"],
          columns=["A", "B", "A"],
      )
      for index in [df.index, pd.Index(list("edcba"))]:
          this_df = df.copy()
          expected_ser = Series(index.values, index=this_df.index)
          expected_df = DataFrame(
              {"A": expected_ser, "B": this_df["B"]},
              columns=["A", "B", "A"],
          )
          this_df["A"] = index
          tm.assert_frame_equal(this_df, expected_df)
  
imports: import numpy
  import pytest
  import pandas
  from pandas import DataFrame, Series, date_range
  import pandas._testing
label_desc: Use image node_id 5 for calling the TestDataFrameNonuniqueIndexes obj's underlying member method code with example usage: obj.test_column_dups_indexes() without return types