code: def test_to_csv_doublequote(self):
      df = DataFrame({"col": ['a"a', '"bb"']})
      expected = '''\
  "","col"
  "0","a""a"
  "1","""bb"""
  '''
  
      with tm.ensure_clean("test.csv") as path:
          df.to_csv(path, quoting=1, doublequote=True)  # QUOTE_ALL
          with open(path, encoding="utf-8") as f:
              assert f.read() == expected
  
      with tm.ensure_clean("test.csv") as path:
          with pytest.raises(Error, match="escapechar"):
              df.to_csv(path, doublequote=False)
  
imports: import io
  import os
  import sys
  from zipfile import ZipFile
  from _csv import Error
  import numpy
  import pytest
  import pandas
  from pandas import DataFrame, Index, compat
  import pandas._testing
label_desc: Use image node_id 4 for calling the TestToCSV obj's underlying member method code with example usage: obj.test_to_csv_doublequote() without return types