TST: remove DST transition scenarios from tc #24689 (#24736)

Author: robbuckley

pandas/tests/indexes/datetimes/test_timezones.py

@@ -434,24 +434,19 @@ def test_dti_tz_localize_utc_conversion(self, tz):
  with pytest.raises(pytz.NonExistentTimeError):
  rng.tz_localize(tz)
 
- @pytest.mark.parametrize('idx', [
- date_range(start='2014-01-01', end='2014-12-31', freq='M'),
- date_range(start='2014-01-01', end='2014-12-31', freq='D'),
- date_range(start='2014-01-01', end='2014-03-01', freq='H'),
- date_range(start='2014-08-01', end='2014-10-31', freq='T')
- ])
- def test_dti_tz_localize_roundtrip(self, tz_aware_fixture, idx):
+ def test_dti_tz_localize_roundtrip(self, tz_aware_fixture):
+ # note: this tz tests that a tz-naive index can be localized
+ # and de-localized successfully, when there are no DST transitions
+ # in the range.
+ idx = date_range(start='2014-06-01', end='2014-08-30', freq='15T')
  tz = tz_aware_fixture
  localized = idx.tz_localize(tz)
- expected = date_range(start=idx[0], end=idx[-1], freq=idx.freq,
- tz=tz)
- tm.assert_index_equal(localized, expected)
+ # cant localize a tz-aware object
  with pytest.raises(TypeError):
  localized.tz_localize(tz)
-
  reset = localized.tz_localize(None)
- tm.assert_index_equal(reset, idx)
  assert reset.tzinfo is None
+ tm.assert_index_equal(reset, idx)
 
  def test_dti_tz_localize_naive(self):
  rng = date_range('1/1/2011', periods=100, freq='H')