import copy import datetime import pickle import unittest try: import pytz except ImportError: pytz = None from django.test import override_settings from django.utils import timezone if pytz is not None: CET = pytz.timezone("Europe/Paris") EAT = timezone.get_fixed_timezone(180) # Africa/Nairobi ICT = timezone.get_fixed_timezone(420) # Asia/Bangkok class TimezoneTests(unittest.TestCase): def test_localtime(self): now = datetime.datetime.utcnow().replace(tzinfo=timezone.utc) local_tz = timezone.LocalTimezone() local_now = timezone.localtime(now, local_tz) self.assertEqual(local_now.tzinfo, local_tz) def test_localtime_naive(self): with self.assertRaises(ValueError): timezone.localtime(datetime.datetime.now()) def test_localtime_out_of_range(self): local_tz = timezone.LocalTimezone() long_ago = datetime.datetime(1900, 1, 1, tzinfo=timezone.utc) try: timezone.localtime(long_ago, local_tz) except (OverflowError, ValueError) as exc: self.assertIn("install pytz", exc.args[0]) else: raise unittest.SkipTest("Failed to trigger an OverflowError or ValueError") def test_now(self): with override_settings(USE_TZ=True): self.assertTrue(timezone.is_aware(timezone.now())) with override_settings(USE_TZ=False): self.assertTrue(timezone.is_naive(timezone.now())) def test_override(self): default = timezone.get_default_timezone() try: timezone.activate(ICT) with timezone.override(EAT): self.assertIs(EAT, timezone.get_current_timezone()) self.assertIs(ICT, timezone.get_current_timezone()) with timezone.override(None): self.assertIs(default, timezone.get_current_timezone()) self.assertIs(ICT, timezone.get_current_timezone()) timezone.deactivate() with timezone.override(EAT): self.assertIs(EAT, timezone.get_current_timezone()) self.assertIs(default, timezone.get_current_timezone()) with timezone.override(None): self.assertIs(default, timezone.get_current_timezone()) self.assertIs(default, timezone.get_current_timezone()) finally: timezone.deactivate() def test_copy(self): self.assertIsInstance(copy.copy(timezone.UTC()), timezone.UTC) self.assertIsInstance(copy.copy(timezone.LocalTimezone()), timezone.LocalTimezone) def test_deepcopy(self): self.assertIsInstance(copy.deepcopy(timezone.UTC()), timezone.UTC) self.assertIsInstance(copy.deepcopy(timezone.LocalTimezone()), timezone.LocalTimezone) def test_pickling_unpickling(self): self.assertIsInstance(pickle.loads(pickle.dumps(timezone.UTC())), timezone.UTC) self.assertIsInstance(pickle.loads(pickle.dumps(timezone.LocalTimezone())), timezone.LocalTimezone) def test_is_aware(self): self.assertTrue(timezone.is_aware(datetime.datetime(2011, 9, 1, 13, 20, 30, tzinfo=EAT))) self.assertFalse(timezone.is_aware(datetime.datetime(2011, 9, 1, 13, 20, 30))) def test_is_naive(self): self.assertFalse(timezone.is_naive(datetime.datetime(2011, 9, 1, 13, 20, 30, tzinfo=EAT))) self.assertTrue(timezone.is_naive(datetime.datetime(2011, 9, 1, 13, 20, 30))) def test_make_aware(self): self.assertEqual( timezone.make_aware(datetime.datetime(2011, 9, 1, 13, 20, 30), EAT), datetime.datetime(2011, 9, 1, 13, 20, 30, tzinfo=EAT)) with self.assertRaises(ValueError): timezone.make_aware(datetime.datetime(2011, 9, 1, 13, 20, 30, tzinfo=EAT), EAT) def test_make_naive(self): self.assertEqual( timezone.make_naive(datetime.datetime(2011, 9, 1, 13, 20, 30, tzinfo=EAT), EAT), datetime.datetime(2011, 9, 1, 13, 20, 30)) self.assertEqual( timezone.make_naive(datetime.datetime(2011, 9, 1, 17, 20, 30, tzinfo=ICT), EAT), datetime.datetime(2011, 9, 1, 13, 20, 30)) with self.assertRaises(ValueError): timezone.make_naive(datetime.datetime(2011, 9, 1, 13, 20, 30), EAT) @unittest.skipIf(pytz is None, "this test requires pytz") def test_make_aware2(self): self.assertEqual( timezone.make_aware(datetime.datetime(2011, 9, 1, 12, 20, 30), CET), CET.localize(datetime.datetime(2011, 9, 1, 12, 20, 30))) with self.assertRaises(ValueError): timezone.make_aware(CET.localize(datetime.datetime(2011, 9, 1, 12, 20, 30)), CET) @unittest.skipIf(pytz is None, "this test requires pytz") def test_make_aware_pytz(self): self.assertEqual( timezone.make_naive(CET.localize(datetime.datetime(2011, 9, 1, 12, 20, 30)), CET), datetime.datetime(2011, 9, 1, 12, 20, 30)) self.assertEqual( timezone.make_naive(pytz.timezone("Asia/Bangkok").localize(datetime.datetime(2011, 9, 1, 17, 20, 30)), CET), datetime.datetime(2011, 9, 1, 12, 20, 30)) with self.assertRaises(ValueError): timezone.make_naive(datetime.datetime(2011, 9, 1, 12, 20, 30), CET)