code: def test_thorough_mangle_columns(all_parsers, data, expected):
      # see gh-17060
      parser = all_parsers
  
      result = parser.read_csv(StringIO(data))
      tm.assert_frame_equal(result, expected)
  
file_path: pandas/pandas/tests/io/parser/test_mangle_dupes.py
imports: from io import StringIO
  import pytest
  from pandas import DataFrame
  import pandas._testing
label_desc: Use image node_id 4 for calling a global function with example usage: test_thorough_mangle_columns(all_parsers, data, expected) without return types