code: def test_constructor_datetime64_values_mismatched_period_dtype(self):
      dti = date_range("2016-01-01", periods=3)
      result = Index(dti, dtype="Period[D]")
      expected = dti.to_period("D")
      tm.assert_index_equal(result, expected)
  
imports: from datetime import datetime, timedelta, timezone
  from decimal import Decimal
  import numpy
  import pytest
  from pandas._libs.tslibs.timezones import maybe_get_tz
  from pandas import NA, Categorical, CategoricalIndex, DatetimeIndex, Index, IntervalIndex, MultiIndex, NaT, PeriodIndex, Series, TimedeltaIndex, Timestamp, array, date_range, period_range, timedelta_range
  import pandas._testing
label_desc: Use image node_id 9 for calling the TestDtypeEnforced obj's underlying member method code with example usage: obj.test_constructor_datetime64_values_mismatched_period_dtype() without return types