code: def test_unicode_index(setup_path):
      unicode_values = ["\u03c3", "\u03c3\u03c3"]
  
      s = Series(
          np.random.default_rng(2).standard_normal(len(unicode_values)),
          unicode_values,
      )
      _check_roundtrip(s, tm.assert_series_equal, path=setup_path)
  
imports: import datetime
  import re
  import numpy
  import pytest
  from pandas._libs.tslibs import Timestamp
  from pandas.compat import is_platform_windows
  import pandas
  from pandas import DataFrame, DatetimeIndex, Index, Series, _testing, bdate_range, date_range, read_hdf
  from pandas.tests.io.pytables.common import _maybe_remove, ensure_clean_store
  from pandas.util import _test_decorators
label_desc: Use image node_id 23 for calling a global function with example usage: test_unicode_index(setup_path) without return types