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277 lines
11 KiB
Python
277 lines
11 KiB
Python
import datetime
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import unittest
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from unittest import mock
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import pytz
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try:
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import zoneinfo
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except ImportError:
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try:
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from backports import zoneinfo
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except ImportError:
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zoneinfo = None
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from django.test import SimpleTestCase, override_settings
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from django.utils import timezone
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CET = pytz.timezone("Europe/Paris")
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EAT = timezone.get_fixed_timezone(180) # Africa/Nairobi
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ICT = timezone.get_fixed_timezone(420) # Asia/Bangkok
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UTC = datetime.timezone.utc
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HAS_ZONEINFO = zoneinfo is not None
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if not HAS_ZONEINFO:
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PARIS_ZI = None
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PARIS_IMPLS = (CET,)
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needs_zoneinfo = unittest.skip("Test requires zoneinfo")
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else:
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PARIS_ZI = zoneinfo.ZoneInfo('Europe/Paris')
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PARIS_IMPLS = (CET, PARIS_ZI)
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def needs_zoneinfo(f):
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return f
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class TimezoneTests(SimpleTestCase):
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def test_now(self):
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with override_settings(USE_TZ=True):
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self.assertTrue(timezone.is_aware(timezone.now()))
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with override_settings(USE_TZ=False):
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self.assertTrue(timezone.is_naive(timezone.now()))
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def test_localdate(self):
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naive = datetime.datetime(2015, 1, 1, 0, 0, 1)
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with self.assertRaisesMessage(ValueError, 'localtime() cannot be applied to a naive datetime'):
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timezone.localdate(naive)
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with self.assertRaisesMessage(ValueError, 'localtime() cannot be applied to a naive datetime'):
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timezone.localdate(naive, timezone=EAT)
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aware = datetime.datetime(2015, 1, 1, 0, 0, 1, tzinfo=ICT)
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self.assertEqual(timezone.localdate(aware, timezone=EAT), datetime.date(2014, 12, 31))
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with timezone.override(EAT):
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self.assertEqual(timezone.localdate(aware), datetime.date(2014, 12, 31))
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with mock.patch('django.utils.timezone.now', return_value=aware):
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self.assertEqual(timezone.localdate(timezone=EAT), datetime.date(2014, 12, 31))
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with timezone.override(EAT):
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self.assertEqual(timezone.localdate(), datetime.date(2014, 12, 31))
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def test_override(self):
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default = timezone.get_default_timezone()
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try:
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timezone.activate(ICT)
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with timezone.override(EAT):
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self.assertIs(EAT, timezone.get_current_timezone())
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self.assertIs(ICT, timezone.get_current_timezone())
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with timezone.override(None):
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self.assertIs(default, timezone.get_current_timezone())
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self.assertIs(ICT, timezone.get_current_timezone())
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timezone.deactivate()
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with timezone.override(EAT):
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self.assertIs(EAT, timezone.get_current_timezone())
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self.assertIs(default, timezone.get_current_timezone())
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with timezone.override(None):
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self.assertIs(default, timezone.get_current_timezone())
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self.assertIs(default, timezone.get_current_timezone())
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finally:
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timezone.deactivate()
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def test_override_decorator(self):
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default = timezone.get_default_timezone()
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@timezone.override(EAT)
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def func_tz_eat():
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self.assertIs(EAT, timezone.get_current_timezone())
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@timezone.override(None)
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def func_tz_none():
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self.assertIs(default, timezone.get_current_timezone())
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try:
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timezone.activate(ICT)
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func_tz_eat()
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self.assertIs(ICT, timezone.get_current_timezone())
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func_tz_none()
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self.assertIs(ICT, timezone.get_current_timezone())
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timezone.deactivate()
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func_tz_eat()
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self.assertIs(default, timezone.get_current_timezone())
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func_tz_none()
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self.assertIs(default, timezone.get_current_timezone())
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finally:
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timezone.deactivate()
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def test_override_string_tz(self):
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with timezone.override('Asia/Bangkok'):
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self.assertEqual(timezone.get_current_timezone_name(), 'Asia/Bangkok')
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def test_override_fixed_offset(self):
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with timezone.override(datetime.timezone(datetime.timedelta(), 'tzname')):
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self.assertEqual(timezone.get_current_timezone_name(), 'tzname')
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def test_activate_invalid_timezone(self):
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with self.assertRaisesMessage(ValueError, 'Invalid timezone: None'):
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timezone.activate(None)
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def test_is_aware(self):
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self.assertTrue(timezone.is_aware(datetime.datetime(2011, 9, 1, 13, 20, 30, tzinfo=EAT)))
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self.assertFalse(timezone.is_aware(datetime.datetime(2011, 9, 1, 13, 20, 30)))
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def test_is_naive(self):
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self.assertFalse(timezone.is_naive(datetime.datetime(2011, 9, 1, 13, 20, 30, tzinfo=EAT)))
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self.assertTrue(timezone.is_naive(datetime.datetime(2011, 9, 1, 13, 20, 30)))
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def test_make_aware(self):
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self.assertEqual(
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timezone.make_aware(datetime.datetime(2011, 9, 1, 13, 20, 30), EAT),
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datetime.datetime(2011, 9, 1, 13, 20, 30, tzinfo=EAT))
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with self.assertRaises(ValueError):
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timezone.make_aware(datetime.datetime(2011, 9, 1, 13, 20, 30, tzinfo=EAT), EAT)
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def test_make_naive(self):
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self.assertEqual(
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timezone.make_naive(datetime.datetime(2011, 9, 1, 13, 20, 30, tzinfo=EAT), EAT),
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datetime.datetime(2011, 9, 1, 13, 20, 30))
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self.assertEqual(
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timezone.make_naive(datetime.datetime(2011, 9, 1, 17, 20, 30, tzinfo=ICT), EAT),
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datetime.datetime(2011, 9, 1, 13, 20, 30))
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with self.assertRaisesMessage(ValueError, 'make_naive() cannot be applied to a naive datetime'):
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timezone.make_naive(datetime.datetime(2011, 9, 1, 13, 20, 30), EAT)
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def test_make_naive_no_tz(self):
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self.assertEqual(
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timezone.make_naive(datetime.datetime(2011, 9, 1, 13, 20, 30, tzinfo=EAT)),
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datetime.datetime(2011, 9, 1, 5, 20, 30)
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)
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def test_make_aware_no_tz(self):
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self.assertEqual(
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timezone.make_aware(datetime.datetime(2011, 9, 1, 13, 20, 30)),
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datetime.datetime(2011, 9, 1, 13, 20, 30, tzinfo=timezone.get_fixed_timezone(-300))
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)
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def test_make_aware2(self):
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CEST = datetime.timezone(datetime.timedelta(hours=2), 'CEST')
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for tz in PARIS_IMPLS:
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with self.subTest(repr(tz)):
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self.assertEqual(
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timezone.make_aware(datetime.datetime(2011, 9, 1, 12, 20, 30), tz),
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datetime.datetime(2011, 9, 1, 12, 20, 30, tzinfo=CEST))
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with self.assertRaises(ValueError):
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timezone.make_aware(CET.localize(datetime.datetime(2011, 9, 1, 12, 20, 30)), CET)
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if HAS_ZONEINFO:
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with self.assertRaises(ValueError):
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timezone.make_aware(datetime.datetime(2011, 9, 1, 12, 20, 30, tzinfo=PARIS_ZI), PARIS_ZI)
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def test_make_naive_pytz(self):
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self.assertEqual(
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timezone.make_naive(CET.localize(datetime.datetime(2011, 9, 1, 12, 20, 30)), CET),
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datetime.datetime(2011, 9, 1, 12, 20, 30))
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self.assertEqual(
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timezone.make_naive(
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pytz.timezone("Asia/Bangkok").localize(datetime.datetime(2011, 9, 1, 17, 20, 30)), CET
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),
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datetime.datetime(2011, 9, 1, 12, 20, 30))
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with self.assertRaisesMessage(ValueError, 'make_naive() cannot be applied to a naive datetime'):
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timezone.make_naive(datetime.datetime(2011, 9, 1, 12, 20, 30), CET)
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@needs_zoneinfo
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def test_make_naive_zoneinfo(self):
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self.assertEqual(
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timezone.make_naive(datetime.datetime(2011, 9, 1, 12, 20, 30, tzinfo=PARIS_ZI), PARIS_ZI),
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datetime.datetime(2011, 9, 1, 12, 20, 30)
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)
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self.assertEqual(
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timezone.make_naive(datetime.datetime(2011, 9, 1, 12, 20, 30, fold=1, tzinfo=PARIS_ZI), PARIS_ZI),
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datetime.datetime(2011, 9, 1, 12, 20, 30, fold=1)
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)
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def test_make_aware_pytz_ambiguous(self):
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# 2:30 happens twice, once before DST ends and once after
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ambiguous = datetime.datetime(2015, 10, 25, 2, 30)
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with self.assertRaises(pytz.AmbiguousTimeError):
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timezone.make_aware(ambiguous, timezone=CET)
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std = timezone.make_aware(ambiguous, timezone=CET, is_dst=False)
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dst = timezone.make_aware(ambiguous, timezone=CET, is_dst=True)
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self.assertEqual(std - dst, datetime.timedelta(hours=1))
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self.assertEqual(std.tzinfo.utcoffset(std), datetime.timedelta(hours=1))
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self.assertEqual(dst.tzinfo.utcoffset(dst), datetime.timedelta(hours=2))
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@needs_zoneinfo
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def test_make_aware_zoneinfo_ambiguous(self):
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# 2:30 happens twice, once before DST ends and once after
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ambiguous = datetime.datetime(2015, 10, 25, 2, 30)
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std = timezone.make_aware(ambiguous.replace(fold=1), timezone=PARIS_ZI)
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dst = timezone.make_aware(ambiguous, timezone=PARIS_ZI)
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self.assertEqual(
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std.astimezone(UTC) - dst.astimezone(UTC),
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datetime.timedelta(hours=1)
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)
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self.assertEqual(std.utcoffset(), datetime.timedelta(hours=1))
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self.assertEqual(dst.utcoffset(), datetime.timedelta(hours=2))
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def test_make_aware_pytz_non_existent(self):
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# 2:30 never happened due to DST
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non_existent = datetime.datetime(2015, 3, 29, 2, 30)
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with self.assertRaises(pytz.NonExistentTimeError):
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timezone.make_aware(non_existent, timezone=CET)
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std = timezone.make_aware(non_existent, timezone=CET, is_dst=False)
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dst = timezone.make_aware(non_existent, timezone=CET, is_dst=True)
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self.assertEqual(std - dst, datetime.timedelta(hours=1))
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self.assertEqual(std.tzinfo.utcoffset(std), datetime.timedelta(hours=1))
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self.assertEqual(dst.tzinfo.utcoffset(dst), datetime.timedelta(hours=2))
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@needs_zoneinfo
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def test_make_aware_zoneinfo_non_existent(self):
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# 2:30 never happened due to DST
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non_existent = datetime.datetime(2015, 3, 29, 2, 30)
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std = timezone.make_aware(non_existent, PARIS_ZI)
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dst = timezone.make_aware(non_existent.replace(fold=1), PARIS_ZI)
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self.assertEqual(
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std.astimezone(UTC) - dst.astimezone(UTC),
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datetime.timedelta(hours=1)
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)
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self.assertEqual(std.utcoffset(), datetime.timedelta(hours=1))
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self.assertEqual(dst.utcoffset(), datetime.timedelta(hours=2))
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def test_get_default_timezone(self):
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self.assertEqual(timezone.get_default_timezone_name(), 'America/Chicago')
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def test_get_default_timezone_utc(self):
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with override_settings(USE_TZ=True, TIME_ZONE='UTC'):
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self.assertIs(timezone.get_default_timezone(), timezone.utc)
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def test_fixedoffset_timedelta(self):
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delta = datetime.timedelta(hours=1)
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self.assertEqual(timezone.get_fixed_timezone(delta).utcoffset(None), delta)
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def test_fixedoffset_negative_timedelta(self):
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delta = datetime.timedelta(hours=-2)
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self.assertEqual(timezone.get_fixed_timezone(delta).utcoffset(None), delta)
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