test_tz.py 文件源码

def testRangeOffsets(self):
        TZR = tz.tzrange('EST', -18000, 'EDT', -14400,
                         start=relativedelta(hours=2, month=4, day=1,
                                             weekday=SU(+2)),
                         end=relativedelta(hours=1, month=10, day=31,
                                           weekday=SU(-1)))

        dt_std = datetime(2014, 4, 11, 12, 0, tzinfo=TZR)  # STD
        dt_dst = datetime(2016, 4, 11, 12, 0, tzinfo=TZR)  # DST

        dst_zero = timedelta(0)
        dst_hour = timedelta(hours=1)

        std_offset = timedelta(hours=-5)
        dst_offset = timedelta(hours=-4)

        # Check dst()
        self.assertEqual(dt_std.dst(), dst_zero)
        self.assertEqual(dt_dst.dst(), dst_hour)

        # Check utcoffset()
        self.assertEqual(dt_std.utcoffset(), std_offset)
        self.assertEqual(dt_dst.utcoffset(), dst_offset)

        # Check tzname
        self.assertEqual(dt_std.tzname(), 'EST')
        self.assertEqual(dt_dst.tzname(), 'EDT')