test_timezones.py 文件源码

def test_localize_utc_conversion_explicit(self):
        # Localizing to time zone should:
        #  1) check for DST ambiguities
        #  2) convert to UTC

        rng = date_range('3/10/2012', '3/11/2012', freq='30T')
        converted = rng.tz_localize(self.tz('US/Eastern'))
        expected_naive = rng + offsets.Hour(5)
        self.assertTrue(np.array_equal(converted.asi8, expected_naive.asi8))

        # DST ambiguity, this should fail
        rng = date_range('3/11/2012', '3/12/2012', freq='30T')
        # Is this really how it should fail??
        self.assertRaises(NonExistentTimeError, rng.tz_localize,
                          self.tz('US/Eastern'))