code: def test_utc_box_timestamp_and_localize(self, tzstr):
      tz = timezones.maybe_get_tz(tzstr)
  
      rng = date_range("3/11/2012", "3/12/2012", freq="h", tz="utc")
      rng_eastern = rng.tz_convert(tzstr)
  
      expected = rng[-1].astimezone(tz)
  
      stamp = rng_eastern[-1]
      assert stamp == expected
      assert stamp.tzinfo == expected.tzinfo
  
      # right tzinfo
      rng = date_range("3/13/2012", "3/14/2012", freq="h", tz="utc")
      rng_eastern = rng.tz_convert(tzstr)
      # test not valid for dateutil timezones.
      # assert 'EDT' in repr(rng_eastern[0].tzinfo)
      assert "EDT" in repr(rng_eastern[0].tzinfo) or "tzfile" in repr(
          rng_eastern[0].tzinfo
      )
  
imports: from datetime import datetime, timedelta, timezone, tzinfo
  from dateutil.tz import gettz
  import numpy
  import pytest
  import pytz
  from pandas._libs.tslibs import conversion, timezones
  import pandas
  from pandas import DatetimeIndex, Timestamp, bdate_range, date_range, isna, to_datetime
  import pandas._testing
label_desc: Use image node_id 9 for calling the TestDatetimeIndexTimezones obj's underlying member method code with example usage: obj.test_utc_box_timestamp_and_localize(tzstr) without return types