code: def test_get_loc_key_unit_mismatch(self):
      idx = date_range("2000-01-01", periods=3)
      key = idx[1].as_unit("ms")
      loc = idx.get_loc(key)
      assert loc == 1
      assert key in idx
  
imports: from datetime import date, datetime, time, timedelta
  import numpy
  import pytest
  from pandas._libs import index
  from pandas.compat.numpy import np_long
  import pandas
  from pandas import DatetimeIndex, Index, Timestamp, bdate_range, date_range, notna
  import pandas._testing
  from pandas.tseries.frequencies import to_offset
label_desc: Use image node_id 1 for calling the TestGetLoc obj's underlying member method code with example usage: obj.test_get_loc_key_unit_mismatch() without return types