code: def test_tz_localize(unit, zone_name):
      s = cudf.Series(date_range("2001-01-01", "2001-01-02", freq="1s"))
      s = s.astype(f"<M8[{unit}]")
      s = s.dt.tz_localize(zone_name)
      assert isinstance(s.dtype, pd.DatetimeTZDtype)
      assert s.dtype.unit == unit
      assert str(s.dtype.tz) == zone_name
  
file_path: cudf/python/cudf/cudf/tests/series/test_datetimelike.py
imports: import os
  import pandas
  import pytest
  import cudf
  from cudf import date_range
  from cudf.testing._utils import assert_eq
label_desc: Use image node_id 4 for calling a global function with example usage: test_tz_localize(unit, zone_name) without return types