tests.py 文件源码

def test_pytz_timezone_serializing(self):
        """
        Serializing with timezones from pytz test
        """
        try:
            import pytz
        except ImportError:
            return self.skipTest("pytz not installed")  # NOQA

        # Avoid conflicting cached tzinfo from other tests
        def unregister_tzid(tzid):
            """Clear tzid from icalendar TZID registry"""
            if icalendar.getTzid(tzid, False):
                icalendar.registerTzid(tzid, None)

        unregister_tzid('US/Eastern')
        eastern = pytz.timezone('US/Eastern')
        cal = base.Component('VCALENDAR')
        cal.setBehavior(icalendar.VCalendar2_0)
        ev = cal.add('vevent')
        ev.add('dtstart').value = eastern.localize(
            datetime.datetime(2008, 10, 12, 9))
        serialized = cal.serialize()

        expected_vtimezone = get_test_file("tz_us_eastern.ics")
        self.assertIn(
            expected_vtimezone.replace('\r\n', '\n'),
            serialized.replace('\r\n', '\n')
        )

        # Exhaustively test all zones (just looking for no errors)
        for tzname in pytz.all_timezones:
            unregister_tzid(tzname)
            tz = icalendar.TimezoneComponent(tzinfo=pytz.timezone(tzname))
            tz.serialize()