import datetime import zoneinfo from unittest import mock from django.test import SimpleTestCase, override_settings from django.utils import timezone PARIS_ZI = zoneinfo.ZoneInfo("Europe/Paris") EAT = timezone.get_fixed_timezone(180) # Africa/Nairobi ICT = timezone.get_fixed_timezone(420) # Asia/Bangkok UTC = datetime.timezone.utc class TimezoneTests(SimpleTestCase): def test_default_timezone_is_zoneinfo(self): self.assertIsInstance(timezone.get_default_timezone(), zoneinfo.ZoneInfo) 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_localdate(self): naive = datetime.datetime(2015, 1, 1, 0, 0, 1) with self.assertRaisesMessage( ValueError, "localtime() cannot be applied to a naive datetime" ): timezone.localdate(naive) with self.assertRaisesMessage( ValueError, "localtime() cannot be applied to a naive datetime" ): timezone.localdate(naive, timezone=EAT) aware = datetime.datetime(2015, 1, 1, 0, 0, 1, tzinfo=ICT) self.assertEqual( timezone.localdate(aware, timezone=EAT), datetime.date(2014, 12, 31) ) with timezone.override(EAT): self.assertEqual(timezone.localdate(aware), datetime.date(2014, 12, 31)) with mock.patch("django.utils.timezone.now", return_value=aware): self.assertEqual( timezone.localdate(timezone=EAT), datetime.date(2014, 12, 31) ) with timezone.override(EAT): self.assertEqual(timezone.localdate(), datetime.date(2014, 12, 31)) 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_override_decorator(self): default = timezone.get_default_timezone() @timezone.override(EAT) def func_tz_eat(): self.assertIs(EAT, timezone.get_current_timezone()) @timezone.override(None) def func_tz_none(): self.assertIs(default, timezone.get_current_timezone()) try: timezone.activate(ICT) func_tz_eat() self.assertIs(ICT, timezone.get_current_timezone()) func_tz_none() self.assertIs(ICT, timezone.get_current_timezone()) timezone.deactivate() func_tz_eat() self.assertIs(default, timezone.get_current_timezone()) func_tz_none() self.assertIs(default, timezone.get_current_timezone()) finally: timezone.deactivate() def test_override_string_tz(self): with timezone.override("Asia/Bangkok"): self.assertEqual(timezone.get_current_timezone_name(), "Asia/Bangkok") def test_override_fixed_offset(self): with timezone.override(datetime.timezone(datetime.timedelta(), "tzname")): self.assertEqual(timezone.get_current_timezone_name(), "tzname") def test_activate_invalid_timezone(self): with self.assertRaisesMessage(ValueError, "Invalid timezone: None"): timezone.activate(None) 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.assertRaisesMessage( ValueError, "make_naive() cannot be applied to a naive datetime" ): timezone.make_naive(datetime.datetime(2011, 9, 1, 13, 20, 30), EAT) def test_make_naive_no_tz(self): self.assertEqual( timezone.make_naive(datetime.datetime(2011, 9, 1, 13, 20, 30, tzinfo=EAT)), datetime.datetime(2011, 9, 1, 5, 20, 30), ) def test_make_aware_no_tz(self): self.assertEqual( timezone.make_aware(datetime.datetime(2011, 9, 1, 13, 20, 30)), datetime.datetime( 2011, 9, 1, 13, 20, 30, tzinfo=timezone.get_fixed_timezone(-300) ), ) def test_make_aware2(self): CEST = datetime.timezone(datetime.timedelta(hours=2), "CEST") self.assertEqual( timezone.make_aware(datetime.datetime(2011, 9, 1, 12, 20, 30), PARIS_ZI), datetime.datetime(2011, 9, 1, 12, 20, 30, tzinfo=CEST), ) with self.assertRaises(ValueError): timezone.make_aware( datetime.datetime(2011, 9, 1, 12, 20, 30, tzinfo=PARIS_ZI), PARIS_ZI ) def test_make_naive_zoneinfo(self): self.assertEqual( timezone.make_naive( datetime.datetime(2011, 9, 1, 12, 20, 30, tzinfo=PARIS_ZI), PARIS_ZI ), datetime.datetime(2011, 9, 1, 12, 20, 30), ) self.assertEqual( timezone.make_naive( datetime.datetime(2011, 9, 1, 12, 20, 30, fold=1, tzinfo=PARIS_ZI), PARIS_ZI, ), datetime.datetime(2011, 9, 1, 12, 20, 30, fold=1), ) def test_make_aware_zoneinfo_ambiguous(self): # 2:30 happens twice, once before DST ends and once after ambiguous = datetime.datetime(2015, 10, 25, 2, 30) std = timezone.make_aware(ambiguous.replace(fold=1), timezone=PARIS_ZI) dst = timezone.make_aware(ambiguous, timezone=PARIS_ZI) self.assertEqual( std.astimezone(UTC) - dst.astimezone(UTC), datetime.timedelta(hours=1) ) self.assertEqual(std.utcoffset(), datetime.timedelta(hours=1)) self.assertEqual(dst.utcoffset(), datetime.timedelta(hours=2)) def test_make_aware_zoneinfo_non_existent(self): # 2:30 never happened due to DST non_existent = datetime.datetime(2015, 3, 29, 2, 30) std = timezone.make_aware(non_existent, PARIS_ZI) dst = timezone.make_aware(non_existent.replace(fold=1), PARIS_ZI) self.assertEqual( std.astimezone(UTC) - dst.astimezone(UTC), datetime.timedelta(hours=1) ) self.assertEqual(std.utcoffset(), datetime.timedelta(hours=1)) self.assertEqual(dst.utcoffset(), datetime.timedelta(hours=2)) def test_get_timezone_name(self): """ The _get_timezone_name() helper must return the offset for fixed offset timezones, for usage with Trunc DB functions. The datetime.timezone examples show the current behavior. """ tests = [ # datetime.timezone, fixed offset with and without `name`. (datetime.timezone(datetime.timedelta(hours=10)), "UTC+10:00"), ( datetime.timezone(datetime.timedelta(hours=10), name="Etc/GMT-10"), "Etc/GMT-10", ), # zoneinfo, named and fixed offset. (zoneinfo.ZoneInfo("Europe/Madrid"), "Europe/Madrid"), (zoneinfo.ZoneInfo("Etc/GMT-10"), "+10"), ] for tz, expected in tests: with self.subTest(tz=tz, expected=expected): self.assertEqual(timezone._get_timezone_name(tz), expected) def test_get_default_timezone(self): self.assertEqual(timezone.get_default_timezone_name(), "America/Chicago") def test_fixedoffset_timedelta(self): delta = datetime.timedelta(hours=1) self.assertEqual(timezone.get_fixed_timezone(delta).utcoffset(None), delta) def test_fixedoffset_negative_timedelta(self): delta = datetime.timedelta(hours=-2) self.assertEqual(timezone.get_fixed_timezone(delta).utcoffset(None), delta)