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import datetime
import unittest
from unittest import mock
import pytz
try:
import zoneinfo
except ImportError:
try:
from backports import zoneinfo
except ImportError:
zoneinfo = None
from django.test import SimpleTestCase, override_settings
from django.utils import timezone
CET = pytz.timezone("Europe/Paris")
EAT = timezone.get_fixed_timezone(180) # Africa/Nairobi
ICT = timezone.get_fixed_timezone(420) # Asia/Bangkok
UTC = datetime.timezone.utc
HAS_ZONEINFO = zoneinfo is not None
if not HAS_ZONEINFO:
PARIS_ZI = None
PARIS_IMPLS = (CET,)
needs_zoneinfo = unittest.skip("Test requires zoneinfo")
else:
PARIS_ZI = zoneinfo.ZoneInfo('Europe/Paris')
PARIS_IMPLS = (CET, PARIS_ZI)
def needs_zoneinfo(f):
return f
class TimezoneTests(SimpleTestCase):
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')
for tz in PARIS_IMPLS:
with self.subTest(repr(tz)):
self.assertEqual(
timezone.make_aware(datetime.datetime(2011, 9, 1, 12, 20, 30), tz),
datetime.datetime(2011, 9, 1, 12, 20, 30, tzinfo=CEST))
with self.assertRaises(ValueError):
timezone.make_aware(CET.localize(datetime.datetime(2011, 9, 1, 12, 20, 30)), CET)
if HAS_ZONEINFO:
with self.assertRaises(ValueError):
timezone.make_aware(datetime.datetime(2011, 9, 1, 12, 20, 30, tzinfo=PARIS_ZI), PARIS_ZI)
def test_make_naive_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.assertRaisesMessage(ValueError, 'make_naive() cannot be applied to a naive datetime'):
timezone.make_naive(datetime.datetime(2011, 9, 1, 12, 20, 30), CET)
@needs_zoneinfo
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_pytz_ambiguous(self):
# 2:30 happens twice, once before DST ends and once after
ambiguous = datetime.datetime(2015, 10, 25, 2, 30)
with self.assertRaises(pytz.AmbiguousTimeError):
timezone.make_aware(ambiguous, timezone=CET)
std = timezone.make_aware(ambiguous, timezone=CET, is_dst=False)
dst = timezone.make_aware(ambiguous, timezone=CET, is_dst=True)
self.assertEqual(std - dst, datetime.timedelta(hours=1))
self.assertEqual(std.tzinfo.utcoffset(std), datetime.timedelta(hours=1))
self.assertEqual(dst.tzinfo.utcoffset(dst), datetime.timedelta(hours=2))
@needs_zoneinfo
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_pytz_non_existent(self):
# 2:30 never happened due to DST
non_existent = datetime.datetime(2015, 3, 29, 2, 30)
with self.assertRaises(pytz.NonExistentTimeError):
timezone.make_aware(non_existent, timezone=CET)
std = timezone.make_aware(non_existent, timezone=CET, is_dst=False)
dst = timezone.make_aware(non_existent, timezone=CET, is_dst=True)
self.assertEqual(std - dst, datetime.timedelta(hours=1))
self.assertEqual(std.tzinfo.utcoffset(std), datetime.timedelta(hours=1))
self.assertEqual(dst.tzinfo.utcoffset(dst), datetime.timedelta(hours=2))
@needs_zoneinfo
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'),
# pytz, named and fixed offset.
(pytz.timezone('Europe/Madrid'), 'Europe/Madrid'),
(pytz.timezone('Etc/GMT-10'), '+10'),
]
if HAS_ZONEINFO:
tests += [
# 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_get_default_timezone_utc(self):
with override_settings(USE_TZ=True, TIME_ZONE='UTC'):
self.assertIs(timezone.get_default_timezone(), timezone.utc)
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)
|
