code: def test_gz_lineend(self):
      # GH 25311
      df = DataFrame({"a": [1, 2]})
      expected_rows = ["a", "1", "2"]
      expected = tm.convert_rows_list_to_csv_str(expected_rows)
      with tm.ensure_clean("__test_gz_lineend.csv.gz") as path:
          df.to_csv(path, index=False)
          with tm.decompress_file(path, compression="gzip") as f:
              result = f.read().decode("utf-8")
  
      assert result == expected
  
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 52 for calling the TestDataFrameToCSV obj's underlying member method code with example usage: obj.test_gz_lineend() without return types