test_tz.py 文件源码

def _testTzFunc(self, tzval, func, std_val, dst_val):
        """
        This generates tests about how the behavior of a function ``func``
        changes between STD and DST (e.g. utcoffset, tzname, dst).

        It assume that DST starts the 2nd Sunday in March and ends the 1st
        Sunday in November
        """
        with TZEnvContext(tzval):
            dt1 = datetime(2015, 2, 1, 12, 0, tzinfo=tz.tzlocal())  # STD
            dt2 = datetime(2015, 5, 1, 12, 0, tzinfo=tz.tzlocal())  # DST

            self.assertEqual(func(dt1), std_val)
            self.assertEqual(func(dt2), dst_val)