code: def test_astype_non_nano_tzaware(self):
      dti = pd.date_range("2016-01-01", periods=3, tz="UTC")
  
      res = dti.astype("M8[s, US/Pacific]")
      assert res.dtype == "M8[s, US/Pacific]"
  
      dta = dti._data
      res = dta.astype("M8[s, US/Pacific]")
      assert res.dtype == "M8[s, US/Pacific]"
  
      # from non-nano to non-nano, preserving reso
      res2 = res.astype("M8[s, UTC]")
      assert res2.dtype == "M8[s, UTC]"
      assert not tm.shares_memory(res2, res)
  
      res3 = res.astype("M8[s, UTC]", copy=False)
      assert res2.dtype == "M8[s, UTC]"
      assert tm.shares_memory(res3, res)
  
imports: from __future__ import annotations
  from datetime import timedelta
  import operator
  import numpy
  import pytest
  from pandas._libs.tslibs import tz_compare
  from pandas.core.dtypes.dtypes import DatetimeTZDtype
  import pandas
  import pandas._testing
  from pandas.core.arrays import DatetimeArray, TimedeltaArray
label_desc: Use image node_id 3 for calling the TestDatetimeArray obj's underlying member method code with example usage: obj.test_astype_non_nano_tzaware() without return types