code: def test_where_invalid_dtypes(self):
      dti = date_range("20130101", periods=3, tz="US/Eastern")
  
      tail = dti[2:].tolist()
      i2 = Index([pd.NaT, pd.NaT] + tail)
  
      mask = notna(i2)
  
      # passing tz-naive ndarray to tzaware DTI
      result = dti.where(mask, i2.values)
      expected = Index([pd.NaT.asm8, pd.NaT.asm8] + tail, dtype=object)
      tm.assert_index_equal(result, expected)
  
      # passing tz-aware DTI to tznaive DTI
      naive = dti.tz_localize(None)
      result = naive.where(mask, i2)
      expected = Index(
          [i2[0], i2[1]] + naive[2:].tolist(), dtype=object
      )
      tm.assert_index_equal(result, expected)
  
      pi = i2.tz_localize(None).to_period("D")
      result = dti.where(mask, pi)
      expected = Index([pi[0], pi[1]] + tail, dtype=object)
      tm.assert_index_equal(result, expected)
  
      tda = i2.asi8.view("timedelta64[ns]")
      result = dti.where(mask, tda)
      expected = Index([tda[0], tda[1]] + tail, dtype=object)
      assert isinstance(expected[0], np.timedelta64)
      tm.assert_index_equal(result, expected)
  
      result = dti.where(mask, i2.asi8)
      expected = Index(
          [pd.NaT._value, pd.NaT._value] + tail, dtype=object
      )
      assert isinstance(expected[0], int)
      tm.assert_index_equal(result, expected)
  
      # non-matching scalar
      td = pd.Timedelta(days=4)
      result = dti.where(mask, td)
      expected = Index([td, td] + tail, dtype=object)
      assert expected[0] is td
      tm.assert_index_equal(result, expected)
  
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 3 for calling the TestWhere obj's underlying member method code with example usage: obj.test_where_invalid_dtypes() without return types