code: def test_dti_setop_aware(self, setop):
      # non-overlapping
      # GH#39328 as of 2.0 we cast these to UTC instead of object
      rng = date_range(
          "2012-11-15 00:00:00", periods=6, freq="h", tz="US/Central"
      )
  
      rng2 = date_range(
          "2012-11-15 12:00:00", periods=6, freq="h", tz="US/Eastern"
      )
  
      result = getattr(rng, setop)(rng2)
  
      left = rng.tz_convert("UTC")
      right = rng2.tz_convert("UTC")
      expected = getattr(left, setop)(right)
      tm.assert_index_equal(result, expected)
      assert result.tz == left.tz
      if len(result):
          assert result[0].tz is timezone.utc
          assert result[-1].tz is timezone.utc
  
imports: from datetime import datetime, timezone
  import numpy
  import pytest
  import pytz
  import pandas.util._test_decorators
  import pandas
  from pandas import DataFrame, DatetimeIndex, Index, Series, Timestamp, bdate_range, date_range
  import pandas._testing
  from pandas.tseries.offsets import BMonthEnd, Minute, MonthEnd
label_desc: Use image node_id 23 for calling the TestDatetimeIndexSetOps obj's underlying member method code with example usage: obj.test_dti_setop_aware(setop) without return types