test_tz.py 文件源码

def testFoldPositiveUTCOffset(self):
        # Test that we can resolve ambiguous times
        tzname = 'AUS Eastern Standard Time'
        args = self.get_args(tzname)

        with self.context(tzname):
            # Calling fromutc() alters the tzfile object
            SYD = self.tzclass(*args)
            SYD0 = self.tzclass(*args)
            SYD1 = self.tzclass(*args)

            self.assertIsNot(SYD0, SYD1)

            # Get the transition time in UTC from the object, because
            # Windows doesn't store historical info
            t_n, t0_u, t1_u = self.get_utc_transitions(SYD0, 2012, False)

            # Using fresh tzfiles
            t0_syd0 = t0_u.astimezone(SYD0)
            t1_syd1 = t1_u.astimezone(SYD1)

            self.assertEqual(t0_syd0.replace(tzinfo=None), t_n)

            self.assertEqual(t1_syd1.replace(tzinfo=None), t_n)

            self.assertNotEqual(t0_syd0, t1_syd1)
            self.assertEqual(t0_syd0.utcoffset(), timedelta(hours=11))
            self.assertEqual(t1_syd1.utcoffset(), timedelta(hours=10))

            # Re-using them across (make sure there's no cache problem)
            t0_syd1 = t0_u.astimezone(SYD1)
            t1_syd0 = t1_u.astimezone(SYD0)

            self.assertEqual(t0_syd0, t0_syd1)
            self.assertEqual(t1_syd1, t1_syd0)