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372 lines
14 KiB
Python
372 lines
14 KiB
Python
import datetime
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import unittest
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from unittest import mock
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try:
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import pytz
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except ImportError:
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pytz = None
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try:
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import zoneinfo
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except ImportError:
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from backports import zoneinfo
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from django.test import SimpleTestCase, ignore_warnings, override_settings
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from django.utils import timezone
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from django.utils.deprecation import RemovedInDjango50Warning
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PARIS_ZI = zoneinfo.ZoneInfo("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_PYTZ = pytz is not None
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if not HAS_PYTZ:
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CET = None
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PARIS_IMPLS = (PARIS_ZI,)
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needs_pytz = unittest.skip("Test requires pytz")
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else:
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CET = pytz.timezone("Europe/Paris")
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PARIS_IMPLS = (PARIS_ZI, CET)
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def needs_pytz(f):
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return f
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class TimezoneTests(SimpleTestCase):
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def setUp(self):
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# RemovedInDjango50Warning
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timezone.get_default_timezone.cache_clear()
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def tearDown(self):
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# RemovedInDjango50Warning
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timezone.get_default_timezone.cache_clear()
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def test_default_timezone_is_zoneinfo(self):
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self.assertIsInstance(timezone.get_default_timezone(), zoneinfo.ZoneInfo)
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@needs_pytz
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@ignore_warnings(category=RemovedInDjango50Warning)
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@override_settings(USE_DEPRECATED_PYTZ=True)
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def test_setting_allows_fallback_to_pytz(self):
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self.assertIsInstance(timezone.get_default_timezone(), pytz.BaseTzInfo)
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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(
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ValueError, "localtime() cannot be applied to a naive datetime"
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):
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timezone.localdate(naive)
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with self.assertRaisesMessage(
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ValueError, "localtime() cannot be applied to a naive datetime"
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):
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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(
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timezone.localdate(aware, timezone=EAT), datetime.date(2014, 12, 31)
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)
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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(
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timezone.localdate(timezone=EAT), datetime.date(2014, 12, 31)
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)
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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(
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timezone.is_aware(datetime.datetime(2011, 9, 1, 13, 20, 30, tzinfo=EAT))
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)
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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(
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timezone.is_naive(datetime.datetime(2011, 9, 1, 13, 20, 30, tzinfo=EAT))
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)
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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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)
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with self.assertRaises(ValueError):
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timezone.make_aware(
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datetime.datetime(2011, 9, 1, 13, 20, 30, tzinfo=EAT), EAT
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)
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def test_make_naive(self):
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self.assertEqual(
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timezone.make_naive(
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datetime.datetime(2011, 9, 1, 13, 20, 30, tzinfo=EAT), EAT
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),
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datetime.datetime(2011, 9, 1, 13, 20, 30),
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)
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self.assertEqual(
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timezone.make_naive(
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datetime.datetime(2011, 9, 1, 17, 20, 30, tzinfo=ICT), EAT
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),
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datetime.datetime(2011, 9, 1, 13, 20, 30),
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)
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with self.assertRaisesMessage(
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ValueError, "make_naive() cannot be applied to a naive datetime"
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):
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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(
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2011, 9, 1, 13, 20, 30, tzinfo=timezone.get_fixed_timezone(-300)
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),
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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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)
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if HAS_PYTZ:
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with self.assertRaises(ValueError):
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timezone.make_aware(
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CET.localize(datetime.datetime(2011, 9, 1, 12, 20, 30)), CET
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)
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with self.assertRaises(ValueError):
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timezone.make_aware(
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datetime.datetime(2011, 9, 1, 12, 20, 30, tzinfo=PARIS_ZI), PARIS_ZI
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)
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@needs_pytz
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def test_make_naive_pytz(self):
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self.assertEqual(
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timezone.make_naive(
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CET.localize(datetime.datetime(2011, 9, 1, 12, 20, 30)), CET
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),
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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(
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pytz.timezone("Asia/Bangkok").localize(
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datetime.datetime(2011, 9, 1, 17, 20, 30)
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),
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CET,
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),
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datetime.datetime(2011, 9, 1, 12, 20, 30),
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)
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with self.assertRaisesMessage(
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ValueError, "make_naive() cannot be applied to a naive datetime"
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):
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timezone.make_naive(datetime.datetime(2011, 9, 1, 12, 20, 30), CET)
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def test_make_naive_zoneinfo(self):
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self.assertEqual(
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timezone.make_naive(
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datetime.datetime(2011, 9, 1, 12, 20, 30, tzinfo=PARIS_ZI), PARIS_ZI
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),
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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(
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datetime.datetime(2011, 9, 1, 12, 20, 30, fold=1, tzinfo=PARIS_ZI),
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PARIS_ZI,
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),
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datetime.datetime(2011, 9, 1, 12, 20, 30, fold=1),
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)
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@needs_pytz
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@ignore_warnings(category=RemovedInDjango50Warning)
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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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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), 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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@needs_pytz
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@ignore_warnings(category=RemovedInDjango50Warning)
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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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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), 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_is_dst_deprecation_warning(self):
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msg = (
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"The is_dst argument to make_aware(), used by the Trunc() "
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"database functions and QuerySet.datetimes(), is deprecated as it "
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"has no effect with zoneinfo time zones."
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)
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with self.assertRaisesMessage(RemovedInDjango50Warning, msg):
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timezone.make_aware(
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datetime.datetime(2011, 9, 1, 13, 20, 30), EAT, is_dst=True
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)
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def test_get_timezone_name(self):
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"""
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The _get_timezone_name() helper must return the offset for fixed offset
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timezones, for usage with Trunc DB functions.
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The datetime.timezone examples show the current behavior.
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"""
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tests = [
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# datetime.timezone, fixed offset with and without `name`.
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(datetime.timezone(datetime.timedelta(hours=10)), "UTC+10:00"),
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(
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datetime.timezone(datetime.timedelta(hours=10), name="Etc/GMT-10"),
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"Etc/GMT-10",
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),
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# zoneinfo, named and fixed offset.
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(zoneinfo.ZoneInfo("Europe/Madrid"), "Europe/Madrid"),
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(zoneinfo.ZoneInfo("Etc/GMT-10"), "+10"),
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]
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if HAS_PYTZ:
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tests += [
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# pytz, named and fixed offset.
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(pytz.timezone("Europe/Madrid"), "Europe/Madrid"),
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(pytz.timezone("Etc/GMT-10"), "+10"),
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]
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for tz, expected in tests:
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with self.subTest(tz=tz, expected=expected):
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self.assertEqual(timezone._get_timezone_name(tz), expected)
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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_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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