# -*- coding: ascii -*- import sys, os, os.path import unittest, doctest try: import cPickle as pickle except ImportError: import pickle from datetime import datetime, time, timedelta, tzinfo import warnings if __name__ == '__main__': # Only munge path if invoked as a script. Testrunners should have setup # the paths already sys.path.insert(0, os.path.abspath(os.path.join(os.pardir, os.pardir))) import pytz from pytz import reference from pytz.tzfile import _byte_string from pytz.tzinfo import DstTzInfo, StaticTzInfo # I test for expected version to ensure the correct version of pytz is # actually being tested. EXPECTED_VERSION='2013d' fmt = '%Y-%m-%d %H:%M:%S %Z%z' NOTIME = timedelta(0) # GMT is a tzinfo.StaticTzInfo--the class we primarily want to test--while # UTC is reference implementation. They both have the same timezone meaning. UTC = pytz.timezone('UTC') GMT = pytz.timezone('GMT') assert isinstance(GMT, StaticTzInfo), 'GMT is no longer a StaticTzInfo' def prettydt(dt): """datetime as a string using a known format. We don't use strftime as it doesn't handle years earlier than 1900 per http://bugs.python.org/issue1777412 """ if dt.utcoffset() >= timedelta(0): offset = '+%s' % (dt.utcoffset(),) else: offset = '-%s' % (-1 * dt.utcoffset(),) return '%04d-%02d-%02d %02d:%02d:%02d %s %s' % ( dt.year, dt.month, dt.day, dt.hour, dt.minute, dt.second, dt.tzname(), offset) try: unicode except NameError: # Python 3.x doesn't have unicode(), making writing code # for Python 2.3 and Python 3.x a pain. unicode = str class BasicTest(unittest.TestCase): def testVersion(self): # Ensuring the correct version of pytz has been loaded self.assertEqual(EXPECTED_VERSION, pytz.__version__, 'Incorrect pytz version loaded. Import path is stuffed ' 'or this test needs updating. (Wanted %s, got %s)' % (EXPECTED_VERSION, pytz.__version__) ) def testGMT(self): now = datetime.now(tz=GMT) self.assertTrue(now.utcoffset() == NOTIME) self.assertTrue(now.dst() == NOTIME) self.assertTrue(now.timetuple() == now.utctimetuple()) self.assertTrue(now==now.replace(tzinfo=UTC)) def testReferenceUTC(self): now = datetime.now(tz=UTC) self.assertTrue(now.utcoffset() == NOTIME) self.assertTrue(now.dst() == NOTIME) self.assertTrue(now.timetuple() == now.utctimetuple()) def testUnknownOffsets(self): # This tzinfo behavior is required to make # datetime.time.{utcoffset, dst, tzname} work as documented. dst_tz = pytz.timezone('US/Eastern') # This information is not known when we don't have a date, # so return None per API. self.assertTrue(dst_tz.utcoffset(None) is None) self.assertTrue(dst_tz.dst(None) is None) # We don't know the abbreviation, but this is still a valid # tzname per the Python documentation. self.assertEqual(dst_tz.tzname(None), 'US/Eastern') def clearCache(self): pytz._tzinfo_cache.clear() def testUnicodeTimezone(self): # We need to ensure that cold lookups work for both Unicode # and traditional strings, and that the desired singleton is # returned. self.clearCache() eastern = pytz.timezone(unicode('US/Eastern')) self.assertTrue(eastern is pytz.timezone('US/Eastern')) self.clearCache() eastern = pytz.timezone('US/Eastern') self.assertTrue(eastern is pytz.timezone(unicode('US/Eastern'))) class PicklingTest(unittest.TestCase): def _roundtrip_tzinfo(self, tz): p = pickle.dumps(tz) unpickled_tz = pickle.loads(p) self.assertTrue(tz is unpickled_tz, '%s did not roundtrip' % tz.zone) def _roundtrip_datetime(self, dt): # Ensure that the tzinfo attached to a datetime instance # is identical to the one returned. This is important for # DST timezones, as some state is stored in the tzinfo. tz = dt.tzinfo p = pickle.dumps(dt) unpickled_dt = pickle.loads(p) unpickled_tz = unpickled_dt.tzinfo self.assertTrue(tz is unpickled_tz, '%s did not roundtrip' % tz.zone) def testDst(self): tz = pytz.timezone('Europe/Amsterdam') dt = datetime(2004, 2, 1, 0, 0, 0) for localized_tz in tz._tzinfos.values(): self._roundtrip_tzinfo(localized_tz) self._roundtrip_datetime(dt.replace(tzinfo=localized_tz)) def testRoundtrip(self): dt = datetime(2004, 2, 1, 0, 0, 0) for zone in pytz.all_timezones: tz = pytz.timezone(zone) self._roundtrip_tzinfo(tz) def testDatabaseFixes(self): # Hack the pickle to make it refer to a timezone abbreviation # that does not match anything. The unpickler should be able # to repair this case tz = pytz.timezone('Australia/Melbourne') p = pickle.dumps(tz) tzname = tz._tzname hacked_p = p.replace(_byte_string(tzname), _byte_string('???')) self.assertNotEqual(p, hacked_p) unpickled_tz = pickle.loads(hacked_p) self.assertTrue(tz is unpickled_tz) # Simulate a database correction. In this case, the incorrect # data will continue to be used. p = pickle.dumps(tz) new_utcoffset = tz._utcoffset.seconds + 42 # Python 3 introduced a new pickle protocol where numbers are stored in # hexadecimal representation. Here we extract the pickle # representation of the number for the current Python version. old_pickle_pattern = pickle.dumps(tz._utcoffset.seconds)[3:-1] new_pickle_pattern = pickle.dumps(new_utcoffset)[3:-1] hacked_p = p.replace(old_pickle_pattern, new_pickle_pattern) self.assertNotEqual(p, hacked_p) unpickled_tz = pickle.loads(hacked_p) self.assertEqual(unpickled_tz._utcoffset.seconds, new_utcoffset) self.assertTrue(tz is not unpickled_tz) def testOldPickles(self): # Ensure that applications serializing pytz instances as pickles # have no troubles upgrading to a new pytz release. These pickles # where created with pytz2006j east1 = pickle.loads(_byte_string( "cpytz\n_p\np1\n(S'US/Eastern'\np2\nI-18000\n" "I0\nS'EST'\np3\ntRp4\n." )) east2 = pytz.timezone('US/Eastern') self.assertTrue(east1 is east2) # Confirm changes in name munging between 2006j and 2007c cause # no problems. pap1 = pickle.loads(_byte_string( "cpytz\n_p\np1\n(S'America/Port_minus_au_minus_Prince'" "\np2\nI-17340\nI0\nS'PPMT'\np3\ntRp4\n.")) pap2 = pytz.timezone('America/Port-au-Prince') self.assertTrue(pap1 is pap2) gmt1 = pickle.loads(_byte_string( "cpytz\n_p\np1\n(S'Etc/GMT_plus_10'\np2\ntRp3\n.")) gmt2 = pytz.timezone('Etc/GMT+10') self.assertTrue(gmt1 is gmt2) class USEasternDSTStartTestCase(unittest.TestCase): tzinfo = pytz.timezone('US/Eastern') # 24 hours before DST changeover transition_time = datetime(2002, 4, 7, 7, 0, 0, tzinfo=UTC) # Increase for 'flexible' DST transitions due to 1 minute granularity # of Python's datetime library instant = timedelta(seconds=1) # before transition before = { 'tzname': 'EST', 'utcoffset': timedelta(hours = -5), 'dst': timedelta(hours = 0), } # after transition after = { 'tzname': 'EDT', 'utcoffset': timedelta(hours = -4), 'dst': timedelta(hours = 1), } def _test_tzname(self, utc_dt, wanted): tzname = wanted['tzname'] dt = utc_dt.astimezone(self.tzinfo) self.assertEqual(dt.tzname(), tzname, 'Expected %s as tzname for %s. Got %s' % ( tzname, str(utc_dt), dt.tzname() ) ) def _test_utcoffset(self, utc_dt, wanted): utcoffset = wanted['utcoffset'] dt = utc_dt.astimezone(self.tzinfo) self.assertEqual( dt.utcoffset(), wanted['utcoffset'], 'Expected %s as utcoffset for %s. Got %s' % ( utcoffset, utc_dt, dt.utcoffset() ) ) def _test_dst(self, utc_dt, wanted): dst = wanted['dst'] dt = utc_dt.astimezone(self.tzinfo) self.assertEqual(dt.dst(),dst, 'Expected %s as dst for %s. Got %s' % ( dst, utc_dt, dt.dst() ) ) def test_arithmetic(self): utc_dt = self.transition_time for days in range(-420, 720, 20): delta = timedelta(days=days) # Make sure we can get back where we started dt = utc_dt.astimezone(self.tzinfo) dt2 = dt + delta dt2 = dt2 - delta self.assertEqual(dt, dt2) # Make sure arithmetic crossing DST boundaries ends # up in the correct timezone after normalization utc_plus_delta = (utc_dt + delta).astimezone(self.tzinfo) local_plus_delta = self.tzinfo.normalize(dt + delta) self.assertEqual( prettydt(utc_plus_delta), prettydt(local_plus_delta), 'Incorrect result for delta==%d days. Wanted %r. Got %r'%( days, prettydt(utc_plus_delta), prettydt(local_plus_delta), ) ) def _test_all(self, utc_dt, wanted): self._test_utcoffset(utc_dt, wanted) self._test_tzname(utc_dt, wanted) self._test_dst(utc_dt, wanted) def testDayBefore(self): self._test_all( self.transition_time - timedelta(days=1), self.before ) def testTwoHoursBefore(self): self._test_all( self.transition_time - timedelta(hours=2), self.before ) def testHourBefore(self): self._test_all( self.transition_time - timedelta(hours=1), self.before ) def testInstantBefore(self): self._test_all( self.transition_time - self.instant, self.before ) def testTransition(self): self._test_all( self.transition_time, self.after ) def testInstantAfter(self): self._test_all( self.transition_time + self.instant, self.after ) def testHourAfter(self): self._test_all( self.transition_time + timedelta(hours=1), self.after ) def testTwoHoursAfter(self): self._test_all( self.transition_time + timedelta(hours=1), self.after ) def testDayAfter(self): self._test_all( self.transition_time + timedelta(days=1), self.after ) class USEasternDSTEndTestCase(USEasternDSTStartTestCase): tzinfo = pytz.timezone('US/Eastern') transition_time = datetime(2002, 10, 27, 6, 0, 0, tzinfo=UTC) before = { 'tzname': 'EDT', 'utcoffset': timedelta(hours = -4), 'dst': timedelta(hours = 1), } after = { 'tzname': 'EST', 'utcoffset': timedelta(hours = -5), 'dst': timedelta(hours = 0), } class USEasternEPTStartTestCase(USEasternDSTStartTestCase): transition_time = datetime(1945, 8, 14, 23, 0, 0, tzinfo=UTC) before = { 'tzname': 'EWT', 'utcoffset': timedelta(hours = -4), 'dst': timedelta(hours = 1), } after = { 'tzname': 'EPT', 'utcoffset': timedelta(hours = -4), 'dst': timedelta(hours = 1), } class USEasternEPTEndTestCase(USEasternDSTStartTestCase): transition_time = datetime(1945, 9, 30, 6, 0, 0, tzinfo=UTC) before = { 'tzname': 'EPT', 'utcoffset': timedelta(hours = -4), 'dst': timedelta(hours = 1), } after = { 'tzname': 'EST', 'utcoffset': timedelta(hours = -5), 'dst': timedelta(hours = 0), } class WarsawWMTEndTestCase(USEasternDSTStartTestCase): # In 1915, Warsaw changed from Warsaw to Central European time. # This involved the clocks being set backwards, causing a end-of-DST # like situation without DST being involved. tzinfo = pytz.timezone('Europe/Warsaw') transition_time = datetime(1915, 8, 4, 22, 36, 0, tzinfo=UTC) before = { 'tzname': 'WMT', 'utcoffset': timedelta(hours=1, minutes=24), 'dst': timedelta(0), } after = { 'tzname': 'CET', 'utcoffset': timedelta(hours=1), 'dst': timedelta(0), } class VilniusWMTEndTestCase(USEasternDSTStartTestCase): # At the end of 1916, Vilnius changed timezones putting its clock # forward by 11 minutes 35 seconds. Neither timezone was in DST mode. tzinfo = pytz.timezone('Europe/Vilnius') instant = timedelta(seconds=31) transition_time = datetime(1916, 12, 31, 22, 36, 00, tzinfo=UTC) before = { 'tzname': 'WMT', 'utcoffset': timedelta(hours=1, minutes=24), 'dst': timedelta(0), } after = { 'tzname': 'KMT', 'utcoffset': timedelta(hours=1, minutes=36), # Really 1:35:36 'dst': timedelta(0), } class VilniusCESTStartTestCase(USEasternDSTStartTestCase): # In 1941, Vilnius changed from MSG to CEST, switching to summer # time while simultaneously reducing its UTC offset by two hours, # causing the clocks to go backwards for this summer time # switchover. tzinfo = pytz.timezone('Europe/Vilnius') transition_time = datetime(1941, 6, 23, 21, 00, 00, tzinfo=UTC) before = { 'tzname': 'MSK', 'utcoffset': timedelta(hours=3), 'dst': timedelta(0), } after = { 'tzname': 'CEST', 'utcoffset': timedelta(hours=2), 'dst': timedelta(hours=1), } class LondonHistoryStartTestCase(USEasternDSTStartTestCase): # The first known timezone transition in London was in 1847 when # clocks where synchronized to GMT. However, we currently only # understand v1 format tzfile(5) files which does handle years # this far in the past, so our earliest known transition is in # 1916. tzinfo = pytz.timezone('Europe/London') # transition_time = datetime(1847, 12, 1, 1, 15, 00, tzinfo=UTC) # before = { # 'tzname': 'LMT', # 'utcoffset': timedelta(minutes=-75), # 'dst': timedelta(0), # } # after = { # 'tzname': 'GMT', # 'utcoffset': timedelta(0), # 'dst': timedelta(0), # } transition_time = datetime(1916, 5, 21, 2, 00, 00, tzinfo=UTC) before = { 'tzname': 'GMT', 'utcoffset': timedelta(0), 'dst': timedelta(0), } after = { 'tzname': 'BST', 'utcoffset': timedelta(hours=1), 'dst': timedelta(hours=1), } class LondonHistoryEndTestCase(USEasternDSTStartTestCase): # Timezone switchovers are projected into the future, even # though no official statements exist or could be believed even # if they did exist. We currently only check the last known # transition in 2037, as we are still using v1 format tzfile(5) # files. tzinfo = pytz.timezone('Europe/London') # transition_time = datetime(2499, 10, 25, 1, 0, 0, tzinfo=UTC) transition_time = datetime(2037, 10, 25, 1, 0, 0, tzinfo=UTC) before = { 'tzname': 'BST', 'utcoffset': timedelta(hours=1), 'dst': timedelta(hours=1), } after = { 'tzname': 'GMT', 'utcoffset': timedelta(0), 'dst': timedelta(0), } class NoumeaHistoryStartTestCase(USEasternDSTStartTestCase): # Noumea adopted a whole hour offset in 1912. Previously # it was 11 hours, 5 minutes and 48 seconds off UTC. However, # due to limitations of the Python datetime library, we need # to round that to 11 hours 6 minutes. tzinfo = pytz.timezone('Pacific/Noumea') transition_time = datetime(1912, 1, 12, 12, 54, 12, tzinfo=UTC) before = { 'tzname': 'LMT', 'utcoffset': timedelta(hours=11, minutes=6), 'dst': timedelta(0), } after = { 'tzname': 'NCT', 'utcoffset': timedelta(hours=11), 'dst': timedelta(0), } class NoumeaDSTEndTestCase(USEasternDSTStartTestCase): # Noumea dropped DST in 1997. tzinfo = pytz.timezone('Pacific/Noumea') transition_time = datetime(1997, 3, 1, 15, 00, 00, tzinfo=UTC) before = { 'tzname': 'NCST', 'utcoffset': timedelta(hours=12), 'dst': timedelta(hours=1), } after = { 'tzname': 'NCT', 'utcoffset': timedelta(hours=11), 'dst': timedelta(0), } class NoumeaNoMoreDSTTestCase(NoumeaDSTEndTestCase): # Noumea dropped DST in 1997. Here we test that it stops occuring. transition_time = ( NoumeaDSTEndTestCase.transition_time + timedelta(days=365*10)) before = NoumeaDSTEndTestCase.after after = NoumeaDSTEndTestCase.after class TahitiTestCase(USEasternDSTStartTestCase): # Tahiti has had a single transition in its history. tzinfo = pytz.timezone('Pacific/Tahiti') transition_time = datetime(1912, 10, 1, 9, 58, 16, tzinfo=UTC) before = { 'tzname': 'LMT', 'utcoffset': timedelta(hours=-9, minutes=-58), 'dst': timedelta(0), } after = { 'tzname': 'TAHT', 'utcoffset': timedelta(hours=-10), 'dst': timedelta(0), } class SamoaInternationalDateLineChange(USEasternDSTStartTestCase): # At the end of 2011, Samoa will switch from being east of the # international dateline to the west. There will be no Dec 30th # 2011 and it will switch from UTC-10 to UTC+14. tzinfo = pytz.timezone('Pacific/Apia') transition_time = datetime(2011, 12, 30, 10, 0, 0, tzinfo=UTC) before = { 'tzname': 'WSDT', 'utcoffset': timedelta(hours=-10), 'dst': timedelta(hours=1), } after = { 'tzname': 'WSDT', 'utcoffset': timedelta(hours=14), 'dst': timedelta(hours=1), } class ReferenceUSEasternDSTStartTestCase(USEasternDSTStartTestCase): tzinfo = reference.Eastern def test_arithmetic(self): # Reference implementation cannot handle this pass class ReferenceUSEasternDSTEndTestCase(USEasternDSTEndTestCase): tzinfo = reference.Eastern def testHourBefore(self): # Python's datetime library has a bug, where the hour before # a daylight savings transition is one hour out. For example, # at the end of US/Eastern daylight savings time, 01:00 EST # occurs twice (once at 05:00 UTC and once at 06:00 UTC), # whereas the first should actually be 01:00 EDT. # Note that this bug is by design - by accepting this ambiguity # for one hour one hour per year, an is_dst flag on datetime.time # became unnecessary. self._test_all( self.transition_time - timedelta(hours=1), self.after ) def testInstantBefore(self): self._test_all( self.transition_time - timedelta(seconds=1), self.after ) def test_arithmetic(self): # Reference implementation cannot handle this pass class LocalTestCase(unittest.TestCase): def testLocalize(self): loc_tz = pytz.timezone('Europe/Amsterdam') loc_time = loc_tz.localize(datetime(1930, 5, 10, 0, 0, 0)) # Actually +00:19:32, but Python datetime rounds this self.assertEqual(loc_time.strftime('%Z%z'), 'AMT+0020') loc_time = loc_tz.localize(datetime(1930, 5, 20, 0, 0, 0)) # Actually +00:19:32, but Python datetime rounds this self.assertEqual(loc_time.strftime('%Z%z'), 'NST+0120') loc_time = loc_tz.localize(datetime(1940, 5, 10, 0, 0, 0)) self.assertEqual(loc_time.strftime('%Z%z'), 'NET+0020') loc_time = loc_tz.localize(datetime(1940, 5, 20, 0, 0, 0)) self.assertEqual(loc_time.strftime('%Z%z'), 'CEST+0200') loc_time = loc_tz.localize(datetime(2004, 2, 1, 0, 0, 0)) self.assertEqual(loc_time.strftime('%Z%z'), 'CET+0100') loc_time = loc_tz.localize(datetime(2004, 4, 1, 0, 0, 0)) self.assertEqual(loc_time.strftime('%Z%z'), 'CEST+0200') tz = pytz.timezone('Europe/Amsterdam') loc_time = loc_tz.localize(datetime(1943, 3, 29, 1, 59, 59)) self.assertEqual(loc_time.strftime('%Z%z'), 'CET+0100') # Switch to US loc_tz = pytz.timezone('US/Eastern') # End of DST ambiguity check loc_time = loc_tz.localize(datetime(1918, 10, 27, 1, 59, 59), is_dst=1) self.assertEqual(loc_time.strftime('%Z%z'), 'EDT-0400') loc_time = loc_tz.localize(datetime(1918, 10, 27, 1, 59, 59), is_dst=0) self.assertEqual(loc_time.strftime('%Z%z'), 'EST-0500') self.assertRaises(pytz.AmbiguousTimeError, loc_tz.localize, datetime(1918, 10, 27, 1, 59, 59), is_dst=None ) # Start of DST non-existent times loc_time = loc_tz.localize(datetime(1918, 3, 31, 2, 0, 0), is_dst=0) self.assertEqual(loc_time.strftime('%Z%z'), 'EST-0500') loc_time = loc_tz.localize(datetime(1918, 3, 31, 2, 0, 0), is_dst=1) self.assertEqual(loc_time.strftime('%Z%z'), 'EDT-0400') self.assertRaises(pytz.NonExistentTimeError, loc_tz.localize, datetime(1918, 3, 31, 2, 0, 0), is_dst=None ) # Weird changes - war time and peace time both is_dst==True loc_time = loc_tz.localize(datetime(1942, 2, 9, 3, 0, 0)) self.assertEqual(loc_time.strftime('%Z%z'), 'EWT-0400') loc_time = loc_tz.localize(datetime(1945, 8, 14, 19, 0, 0)) self.assertEqual(loc_time.strftime('%Z%z'), 'EPT-0400') loc_time = loc_tz.localize(datetime(1945, 9, 30, 1, 0, 0), is_dst=1) self.assertEqual(loc_time.strftime('%Z%z'), 'EPT-0400') loc_time = loc_tz.localize(datetime(1945, 9, 30, 1, 0, 0), is_dst=0) self.assertEqual(loc_time.strftime('%Z%z'), 'EST-0500') def testNormalize(self): tz = pytz.timezone('US/Eastern') dt = datetime(2004, 4, 4, 7, 0, 0, tzinfo=UTC).astimezone(tz) dt2 = dt - timedelta(minutes=10) self.assertEqual( dt2.strftime('%Y-%m-%d %H:%M:%S %Z%z'), '2004-04-04 02:50:00 EDT-0400' ) dt2 = tz.normalize(dt2) self.assertEqual( dt2.strftime('%Y-%m-%d %H:%M:%S %Z%z'), '2004-04-04 01:50:00 EST-0500' ) def testPartialMinuteOffsets(self): # utcoffset in Amsterdam was not a whole minute until 1937 # However, we fudge this by rounding them, as the Python # datetime library tz = pytz.timezone('Europe/Amsterdam') utc_dt = datetime(1914, 1, 1, 13, 40, 28, tzinfo=UTC) # correct utc_dt = utc_dt.replace(second=0) # But we need to fudge it loc_dt = utc_dt.astimezone(tz) self.assertEqual( loc_dt.strftime('%Y-%m-%d %H:%M:%S %Z%z'), '1914-01-01 14:00:00 AMT+0020' ) # And get back... utc_dt = loc_dt.astimezone(UTC) self.assertEqual( utc_dt.strftime('%Y-%m-%d %H:%M:%S %Z%z'), '1914-01-01 13:40:00 UTC+0000' ) def no_testCreateLocaltime(self): # It would be nice if this worked, but it doesn't. tz = pytz.timezone('Europe/Amsterdam') dt = datetime(2004, 10, 31, 2, 0, 0, tzinfo=tz) self.assertEqual( dt.strftime(fmt), '2004-10-31 02:00:00 CET+0100' ) class CommonTimezonesTestCase(unittest.TestCase): def test_bratislava(self): # Bratislava is the default timezone for Slovakia, but our # heuristics where not adding it to common_timezones. Ideally, # common_timezones should be populated from zone.tab at runtime, # but I'm hesitant to pay the startup cost as loading the list # on demand whilst remaining backwards compatible seems # difficult. self.assertTrue('Europe/Bratislava' in pytz.common_timezones) self.assertTrue('Europe/Bratislava' in pytz.common_timezones_set) def test_us_eastern(self): self.assertTrue('US/Eastern' in pytz.common_timezones) self.assertTrue('US/Eastern' in pytz.common_timezones_set) def test_belfast(self): # Belfast uses London time. self.assertTrue('Europe/Belfast' in pytz.all_timezones_set) self.assertFalse('Europe/Belfast' in pytz.common_timezones) self.assertFalse('Europe/Belfast' in pytz.common_timezones_set) class BaseTzInfoTestCase: '''Ensure UTC, StaticTzInfo and DstTzInfo work consistently. These tests are run for each type of tzinfo. ''' tz = None # override tz_class = None # override def test_expectedclass(self): self.assertTrue(isinstance(self.tz, self.tz_class)) def test_fromutc(self): # naive datetime. dt1 = datetime(2011, 10, 31) # localized datetime, same timezone. dt2 = self.tz.localize(dt1) # Both should give the same results. Note that the standard # Python tzinfo.fromutc() only supports the second. for dt in [dt1, dt2]: loc_dt = self.tz.fromutc(dt) loc_dt2 = pytz.utc.localize(dt1).astimezone(self.tz) self.assertEqual(loc_dt, loc_dt2) # localized datetime, different timezone. new_tz = pytz.timezone('Europe/Paris') self.assertTrue(self.tz is not new_tz) dt3 = new_tz.localize(dt1) self.assertRaises(ValueError, self.tz.fromutc, dt3) def test_normalize(self): other_tz = pytz.timezone('Europe/Paris') self.assertTrue(self.tz is not other_tz) dt = datetime(2012, 3, 26, 12, 0) other_dt = other_tz.localize(dt) local_dt = self.tz.normalize(other_dt) self.assertTrue(local_dt.tzinfo is not other_dt.tzinfo) self.assertNotEqual( local_dt.replace(tzinfo=None), other_dt.replace(tzinfo=None)) def test_astimezone(self): other_tz = pytz.timezone('Europe/Paris') self.assertTrue(self.tz is not other_tz) dt = datetime(2012, 3, 26, 12, 0) other_dt = other_tz.localize(dt) local_dt = other_dt.astimezone(self.tz) self.assertTrue(local_dt.tzinfo is not other_dt.tzinfo) self.assertNotEqual( local_dt.replace(tzinfo=None), other_dt.replace(tzinfo=None)) class OptimizedUTCTestCase(unittest.TestCase, BaseTzInfoTestCase): tz = pytz.utc tz_class = tz.__class__ class LegacyUTCTestCase(unittest.TestCase, BaseTzInfoTestCase): # Deprecated timezone, but useful for comparison tests. tz = pytz.timezone('Etc/UTC') tz_class = StaticTzInfo class StaticTzInfoTestCase(unittest.TestCase, BaseTzInfoTestCase): tz = pytz.timezone('GMT') tz_class = StaticTzInfo class DstTzInfoTestCase(unittest.TestCase, BaseTzInfoTestCase): tz = pytz.timezone('Australia/Melbourne') tz_class = DstTzInfo def test_suite(): suite = unittest.TestSuite() suite.addTest(doctest.DocTestSuite('pytz')) suite.addTest(doctest.DocTestSuite('pytz.tzinfo')) import test_tzinfo suite.addTest(unittest.defaultTestLoader.loadTestsFromModule(test_tzinfo)) return suite if __name__ == '__main__': warnings.simplefilter("error") # Warnings should be fatal in tests. unittest.main(defaultTest='test_suite')