/
test_tz.py
2811 lines (2147 loc) · 98.3 KB
/
test_tz.py
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# -*- coding: utf-8 -*-
from __future__ import unicode_literals
from ._common import PicklableMixin
from ._common import TZEnvContext, TZWinContext
from ._common import WarningTestMixin
from ._common import ComparesEqual
from datetime import datetime, timedelta
from datetime import time as dt_time
from datetime import tzinfo
from six import PY2
from io import BytesIO, StringIO
import unittest
import sys
import base64
import copy
import gc
import weakref
from functools import partial
IS_WIN = sys.platform.startswith('win')
import pytest
# dateutil imports
from dateutil.relativedelta import relativedelta, SU, TH
from dateutil.parser import parse
from dateutil import tz as tz
from dateutil import zoneinfo
try:
from dateutil import tzwin
except ImportError as e:
if IS_WIN:
raise e
else:
pass
MISSING_TARBALL = ("This test fails if you don't have the dateutil "
"timezone file installed. Please read the README")
TZFILE_EST5EDT = b"""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"""
EUROPE_HELSINKI = b"""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==
"""
NEW_YORK = b"""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"""
TZICAL_EST5EDT = """
BEGIN:VTIMEZONE
TZID:US-Eastern
LAST-MODIFIED:19870101T000000Z
TZURL:http://zones.stds_r_us.net/tz/US-Eastern
BEGIN:STANDARD
DTSTART:19671029T020000
RRULE:FREQ=YEARLY;BYDAY=-1SU;BYMONTH=10
TZOFFSETFROM:-0400
TZOFFSETTO:-0500
TZNAME:EST
END:STANDARD
BEGIN:DAYLIGHT
DTSTART:19870405T020000
RRULE:FREQ=YEARLY;BYDAY=1SU;BYMONTH=4
TZOFFSETFROM:-0500
TZOFFSETTO:-0400
TZNAME:EDT
END:DAYLIGHT
END:VTIMEZONE
"""
TZICAL_PST8PDT = """
BEGIN:VTIMEZONE
TZID:US-Pacific
LAST-MODIFIED:19870101T000000Z
BEGIN:STANDARD
DTSTART:19671029T020000
RRULE:FREQ=YEARLY;BYDAY=-1SU;BYMONTH=10
TZOFFSETFROM:-0700
TZOFFSETTO:-0800
TZNAME:PST
END:STANDARD
BEGIN:DAYLIGHT
DTSTART:19870405T020000
RRULE:FREQ=YEARLY;BYDAY=1SU;BYMONTH=4
TZOFFSETFROM:-0800
TZOFFSETTO:-0700
TZNAME:PDT
END:DAYLIGHT
END:VTIMEZONE
"""
EST_TUPLE = ('EST', timedelta(hours=-5), timedelta(hours=0))
EDT_TUPLE = ('EDT', timedelta(hours=-4), timedelta(hours=1))
SUPPORTS_SUB_MINUTE_OFFSETS = sys.version_info >= (3, 6)
###
# Helper functions
def get_timezone_tuple(dt):
"""Retrieve a (tzname, utcoffset, dst) tuple for a given DST"""
return dt.tzname(), dt.utcoffset(), dt.dst()
###
# Mix-ins
class context_passthrough(object):
def __init__(*args, **kwargs):
pass
def __enter__(*args, **kwargs):
pass
def __exit__(*args, **kwargs):
pass
class TzFoldMixin(object):
""" Mix-in class for testing ambiguous times """
def gettz(self, tzname):
raise NotImplementedError
def _get_tzname(self, tzname):
return tzname
def _gettz_context(self, tzname):
return context_passthrough()
def testFoldPositiveUTCOffset(self):
# Test that we can resolve ambiguous times
tzname = self._get_tzname('Australia/Sydney')
with self._gettz_context(tzname):
SYD = self.gettz(tzname)
t0_u = datetime(2012, 3, 31, 15, 30, tzinfo=tz.UTC) # AEST
t1_u = datetime(2012, 3, 31, 16, 30, tzinfo=tz.UTC) # AEDT
t0_syd0 = t0_u.astimezone(SYD)
t1_syd1 = t1_u.astimezone(SYD)
self.assertEqual(t0_syd0.replace(tzinfo=None),
datetime(2012, 4, 1, 2, 30))
self.assertEqual(t1_syd1.replace(tzinfo=None),
datetime(2012, 4, 1, 2, 30))
self.assertEqual(t0_syd0.utcoffset(), timedelta(hours=11))
self.assertEqual(t1_syd1.utcoffset(), timedelta(hours=10))
def testGapPositiveUTCOffset(self):
# Test that we don't have a problem around gaps.
tzname = self._get_tzname('Australia/Sydney')
with self._gettz_context(tzname):
SYD = self.gettz(tzname)
t0_u = datetime(2012, 10, 6, 15, 30, tzinfo=tz.UTC) # AEST
t1_u = datetime(2012, 10, 6, 16, 30, tzinfo=tz.UTC) # AEDT
t0 = t0_u.astimezone(SYD)
t1 = t1_u.astimezone(SYD)
self.assertEqual(t0.replace(tzinfo=None),
datetime(2012, 10, 7, 1, 30))
self.assertEqual(t1.replace(tzinfo=None),
datetime(2012, 10, 7, 3, 30))
self.assertEqual(t0.utcoffset(), timedelta(hours=10))
self.assertEqual(t1.utcoffset(), timedelta(hours=11))
def testFoldNegativeUTCOffset(self):
# Test that we can resolve ambiguous times
tzname = self._get_tzname('America/Toronto')
with self._gettz_context(tzname):
TOR = self.gettz(tzname)
t0_u = datetime(2011, 11, 6, 5, 30, tzinfo=tz.UTC)
t1_u = datetime(2011, 11, 6, 6, 30, tzinfo=tz.UTC)
t0_tor = t0_u.astimezone(TOR)
t1_tor = t1_u.astimezone(TOR)
self.assertEqual(t0_tor.replace(tzinfo=None),
datetime(2011, 11, 6, 1, 30))
self.assertEqual(t1_tor.replace(tzinfo=None),
datetime(2011, 11, 6, 1, 30))
self.assertNotEqual(t0_tor.tzname(), t1_tor.tzname())
self.assertEqual(t0_tor.utcoffset(), timedelta(hours=-4.0))
self.assertEqual(t1_tor.utcoffset(), timedelta(hours=-5.0))
def testGapNegativeUTCOffset(self):
# Test that we don't have a problem around gaps.
tzname = self._get_tzname('America/Toronto')
with self._gettz_context(tzname):
TOR = self.gettz(tzname)
t0_u = datetime(2011, 3, 13, 6, 30, tzinfo=tz.UTC)
t1_u = datetime(2011, 3, 13, 7, 30, tzinfo=tz.UTC)
t0 = t0_u.astimezone(TOR)
t1 = t1_u.astimezone(TOR)
self.assertEqual(t0.replace(tzinfo=None),
datetime(2011, 3, 13, 1, 30))
self.assertEqual(t1.replace(tzinfo=None),
datetime(2011, 3, 13, 3, 30))
self.assertNotEqual(t0, t1)
self.assertEqual(t0.utcoffset(), timedelta(hours=-5.0))
self.assertEqual(t1.utcoffset(), timedelta(hours=-4.0))
def testFoldLondon(self):
tzname = self._get_tzname('Europe/London')
with self._gettz_context(tzname):
LON = self.gettz(tzname)
UTC = tz.UTC
t0_u = datetime(2013, 10, 27, 0, 30, tzinfo=UTC) # BST
t1_u = datetime(2013, 10, 27, 1, 30, tzinfo=UTC) # GMT
t0 = t0_u.astimezone(LON)
t1 = t1_u.astimezone(LON)
self.assertEqual(t0.replace(tzinfo=None),
datetime(2013, 10, 27, 1, 30))
self.assertEqual(t1.replace(tzinfo=None),
datetime(2013, 10, 27, 1, 30))
self.assertEqual(t0.utcoffset(), timedelta(hours=1))
self.assertEqual(t1.utcoffset(), timedelta(hours=0))
def testFoldIndependence(self):
tzname = self._get_tzname('America/New_York')
with self._gettz_context(tzname):
NYC = self.gettz(tzname)
UTC = tz.UTC
hour = timedelta(hours=1)
# Firmly 2015-11-01 0:30 EDT-4
pre_dst = datetime(2015, 11, 1, 0, 30, tzinfo=NYC)
# Ambiguous between 2015-11-01 1:30 EDT-4 and 2015-11-01 1:30 EST-5
in_dst = pre_dst + hour
in_dst_tzname_0 = in_dst.tzname() # Stash the tzname - EDT
# Doing the arithmetic in UTC creates a date that is unambiguously
# 2015-11-01 1:30 EDT-5
in_dst_via_utc = (pre_dst.astimezone(UTC) + 2*hour).astimezone(NYC)
# Make sure the dates are actually ambiguous
self.assertEqual(in_dst, in_dst_via_utc)
# Make sure we got the right folding behavior
self.assertNotEqual(in_dst_via_utc.tzname(), in_dst_tzname_0)
# Now check to make sure in_dst's tzname hasn't changed
self.assertEqual(in_dst_tzname_0, in_dst.tzname())
def testInZoneFoldEquality(self):
# Two datetimes in the same zone are considered to be equal if their
# wall times are equal, even if they have different absolute times.
tzname = self._get_tzname('America/New_York')
with self._gettz_context(tzname):
NYC = self.gettz(tzname)
UTC = tz.UTC
dt0 = datetime(2011, 11, 6, 1, 30, tzinfo=NYC)
dt1 = tz.enfold(dt0, fold=1)
# Make sure these actually represent different times
self.assertNotEqual(dt0.astimezone(UTC), dt1.astimezone(UTC))
# Test that they compare equal
self.assertEqual(dt0, dt1)
def _test_ambiguous_time(self, dt, tzid, ambiguous):
# This is a test to check that the individual is_ambiguous values
# on the _tzinfo subclasses work.
tzname = self._get_tzname(tzid)
with self._gettz_context(tzname):
tzi = self.gettz(tzname)
self.assertEqual(tz.datetime_ambiguous(dt, tz=tzi), ambiguous)
def testAmbiguousNegativeUTCOffset(self):
self._test_ambiguous_time(datetime(2015, 11, 1, 1, 30),
'America/New_York', True)
def testAmbiguousPositiveUTCOffset(self):
self._test_ambiguous_time(datetime(2012, 4, 1, 2, 30),
'Australia/Sydney', True)
def testUnambiguousNegativeUTCOffset(self):
self._test_ambiguous_time(datetime(2015, 11, 1, 2, 30),
'America/New_York', False)
def testUnambiguousPositiveUTCOffset(self):
self._test_ambiguous_time(datetime(2012, 4, 1, 3, 30),
'Australia/Sydney', False)
def testUnambiguousGapNegativeUTCOffset(self):
# Imaginary time
self._test_ambiguous_time(datetime(2011, 3, 13, 2, 30),
'America/New_York', False)
def testUnambiguousGapPositiveUTCOffset(self):
# Imaginary time
self._test_ambiguous_time(datetime(2012, 10, 7, 2, 30),
'Australia/Sydney', False)
def _test_imaginary_time(self, dt, tzid, exists):
tzname = self._get_tzname(tzid)
with self._gettz_context(tzname):
tzi = self.gettz(tzname)
self.assertEqual(tz.datetime_exists(dt, tz=tzi), exists)
def testImaginaryNegativeUTCOffset(self):
self._test_imaginary_time(datetime(2011, 3, 13, 2, 30),
'America/New_York', False)
def testNotImaginaryNegativeUTCOffset(self):
self._test_imaginary_time(datetime(2011, 3, 13, 1, 30),
'America/New_York', True)
def testImaginaryPositiveUTCOffset(self):
self._test_imaginary_time(datetime(2012, 10, 7, 2, 30),
'Australia/Sydney', False)
def testNotImaginaryPositiveUTCOffset(self):
self._test_imaginary_time(datetime(2012, 10, 7, 1, 30),
'Australia/Sydney', True)
def testNotImaginaryFoldNegativeUTCOffset(self):
self._test_imaginary_time(datetime(2015, 11, 1, 1, 30),
'America/New_York', True)
def testNotImaginaryFoldPositiveUTCOffset(self):
self._test_imaginary_time(datetime(2012, 4, 1, 3, 30),
'Australia/Sydney', True)
@unittest.skip("Known failure in Python 3.6.")
def testEqualAmbiguousComparison(self):
tzname = self._get_tzname('Australia/Sydney')
with self._gettz_context(tzname):
SYD0 = self.gettz(tzname)
SYD1 = self.gettz(tzname)
t0_u = datetime(2012, 3, 31, 14, 30, tzinfo=tz.UTC) # AEST
t0_syd0 = t0_u.astimezone(SYD0)
t0_syd1 = t0_u.astimezone(SYD1)
# This is considered an "inter-zone comparison" because it's an
# ambiguous datetime.
self.assertEqual(t0_syd0, t0_syd1)
class TzWinFoldMixin(object):
def get_args(self, tzname):
return (tzname, )
class context(object):
def __init__(*args, **kwargs):
pass
def __enter__(*args, **kwargs):
pass
def __exit__(*args, **kwargs):
pass
def get_utc_transitions(self, tzi, year, gap):
dston, dstoff = tzi.transitions(year)
if gap:
t_n = dston - timedelta(minutes=30)
t0_u = t_n.replace(tzinfo=tzi).astimezone(tz.UTC)
t1_u = t0_u + timedelta(hours=1)
else:
# Get 1 hour before the first ambiguous date
t_n = dstoff - timedelta(minutes=30)
t0_u = t_n.replace(tzinfo=tzi).astimezone(tz.UTC)
t_n += timedelta(hours=1) # Naive ambiguous date
t0_u = t0_u + timedelta(hours=1) # First ambiguous date
t1_u = t0_u + timedelta(hours=1) # Second ambiguous date
return t_n, t0_u, t1_u
def testFoldPositiveUTCOffset(self):
# Test that we can resolve ambiguous times
tzname = 'AUS Eastern Standard Time'
args = self.get_args(tzname)
with self.context(tzname):
# Calling fromutc() alters the tzfile object
SYD = self.tzclass(*args)
# Get the transition time in UTC from the object, because
# Windows doesn't store historical info
t_n, t0_u, t1_u = self.get_utc_transitions(SYD, 2012, False)
# Using fresh tzfiles
t0_syd = t0_u.astimezone(SYD)
t1_syd = t1_u.astimezone(SYD)
self.assertEqual(t0_syd.replace(tzinfo=None), t_n)
self.assertEqual(t1_syd.replace(tzinfo=None), t_n)
self.assertEqual(t0_syd.utcoffset(), timedelta(hours=11))
self.assertEqual(t1_syd.utcoffset(), timedelta(hours=10))
self.assertNotEqual(t0_syd.tzname(), t1_syd.tzname())
def testGapPositiveUTCOffset(self):
# Test that we don't have a problem around gaps.
tzname = 'AUS Eastern Standard Time'
args = self.get_args(tzname)
with self.context(tzname):
SYD = self.tzclass(*args)
t_n, t0_u, t1_u = self.get_utc_transitions(SYD, 2012, True)
t0 = t0_u.astimezone(SYD)
t1 = t1_u.astimezone(SYD)
self.assertEqual(t0.replace(tzinfo=None), t_n)
self.assertEqual(t1.replace(tzinfo=None), t_n + timedelta(hours=2))
self.assertEqual(t0.utcoffset(), timedelta(hours=10))
self.assertEqual(t1.utcoffset(), timedelta(hours=11))
def testFoldNegativeUTCOffset(self):
# Test that we can resolve ambiguous times
tzname = 'Eastern Standard Time'
args = self.get_args(tzname)
with self.context(tzname):
TOR = self.tzclass(*args)
t_n, t0_u, t1_u = self.get_utc_transitions(TOR, 2011, False)
t0_tor = t0_u.astimezone(TOR)
t1_tor = t1_u.astimezone(TOR)
self.assertEqual(t0_tor.replace(tzinfo=None), t_n)
self.assertEqual(t1_tor.replace(tzinfo=None), t_n)
self.assertNotEqual(t0_tor.tzname(), t1_tor.tzname())
self.assertEqual(t0_tor.utcoffset(), timedelta(hours=-4.0))
self.assertEqual(t1_tor.utcoffset(), timedelta(hours=-5.0))
def testGapNegativeUTCOffset(self):
# Test that we don't have a problem around gaps.
tzname = 'Eastern Standard Time'
args = self.get_args(tzname)
with self.context(tzname):
TOR = self.tzclass(*args)
t_n, t0_u, t1_u = self.get_utc_transitions(TOR, 2011, True)
t0 = t0_u.astimezone(TOR)
t1 = t1_u.astimezone(TOR)
self.assertEqual(t0.replace(tzinfo=None),
t_n)
self.assertEqual(t1.replace(tzinfo=None),
t_n + timedelta(hours=2))
self.assertNotEqual(t0.tzname(), t1.tzname())
self.assertEqual(t0.utcoffset(), timedelta(hours=-5.0))
self.assertEqual(t1.utcoffset(), timedelta(hours=-4.0))
def testFoldIndependence(self):
tzname = 'Eastern Standard Time'
args = self.get_args(tzname)
with self.context(tzname):
NYC = self.tzclass(*args)
UTC = tz.UTC
hour = timedelta(hours=1)
# Firmly 2015-11-01 0:30 EDT-4
t_n, t0_u, t1_u = self.get_utc_transitions(NYC, 2015, False)
pre_dst = (t_n - hour).replace(tzinfo=NYC)
# Currently, there's no way around the fact that this resolves to an
# ambiguous date, which defaults to EST. I'm not hard-coding in the
# answer, though, because the preferred behavior would be that this
# results in a time on the EDT side.
# Ambiguous between 2015-11-01 1:30 EDT-4 and 2015-11-01 1:30 EST-5
in_dst = pre_dst + hour
in_dst_tzname_0 = in_dst.tzname() # Stash the tzname - EDT
# Doing the arithmetic in UTC creates a date that is unambiguously
# 2015-11-01 1:30 EDT-5
in_dst_via_utc = (pre_dst.astimezone(UTC) + 2*hour).astimezone(NYC)
# Make sure we got the right folding behavior
self.assertNotEqual(in_dst_via_utc.tzname(), in_dst_tzname_0)
# Now check to make sure in_dst's tzname hasn't changed
self.assertEqual(in_dst_tzname_0, in_dst.tzname())
def testInZoneFoldEquality(self):
# Two datetimes in the same zone are considered to be equal if their
# wall times are equal, even if they have different absolute times.
tzname = 'Eastern Standard Time'
args = self.get_args(tzname)
with self.context(tzname):
NYC = self.tzclass(*args)
UTC = tz.UTC
t_n, t0_u, t1_u = self.get_utc_transitions(NYC, 2011, False)
dt0 = t_n.replace(tzinfo=NYC)
dt1 = tz.enfold(dt0, fold=1)
# Make sure these actually represent different times
self.assertNotEqual(dt0.astimezone(UTC), dt1.astimezone(UTC))
# Test that they compare equal
self.assertEqual(dt0, dt1)
###
# Test Cases
class TzUTCTest(unittest.TestCase):
def testSingleton(self):
UTC_0 = tz.tzutc()
UTC_1 = tz.tzutc()
self.assertIs(UTC_0, UTC_1)
def testOffset(self):
ct = datetime(2009, 4, 1, 12, 11, 13, tzinfo=tz.tzutc())
self.assertEqual(ct.utcoffset(), timedelta(seconds=0))
def testDst(self):
ct = datetime(2009, 4, 1, 12, 11, 13, tzinfo=tz.tzutc())
self.assertEqual(ct.dst(), timedelta(seconds=0))
def testTzName(self):
ct = datetime(2009, 4, 1, 12, 11, 13, tzinfo=tz.tzutc())
self.assertEqual(ct.tzname(), 'UTC')
def testEquality(self):
UTC0 = tz.tzutc()
UTC1 = tz.tzutc()
self.assertEqual(UTC0, UTC1)
def testInequality(self):
UTC = tz.tzutc()
UTCp4 = tz.tzoffset('UTC+4', 14400)
self.assertNotEqual(UTC, UTCp4)
def testInequalityInteger(self):
self.assertFalse(tz.tzutc() == 7)
self.assertNotEqual(tz.tzutc(), 7)
def testInequalityUnsupported(self):
self.assertEqual(tz.tzutc(), ComparesEqual)
def testRepr(self):
UTC = tz.tzutc()
self.assertEqual(repr(UTC), 'tzutc()')
def testTimeOnlyUTC(self):
# https://github.com/dateutil/dateutil/issues/132
# tzutc doesn't care
tz_utc = tz.tzutc()
self.assertEqual(dt_time(13, 20, tzinfo=tz_utc).utcoffset(),
timedelta(0))
def testAmbiguity(self):
# Pick an arbitrary datetime, this should always return False.
dt = datetime(2011, 9, 1, 2, 30, tzinfo=tz.tzutc())
self.assertFalse(tz.datetime_ambiguous(dt))
@pytest.mark.tzoffset
class TzOffsetTest(unittest.TestCase):
def testTimedeltaOffset(self):
est = tz.tzoffset('EST', timedelta(hours=-5))
est_s = tz.tzoffset('EST', -18000)
self.assertEqual(est, est_s)
def testTzNameNone(self):
gmt5 = tz.tzoffset(None, -18000) # -5:00
self.assertIs(datetime(2003, 10, 26, 0, 0, tzinfo=gmt5).tzname(),
None)
def testTimeOnlyOffset(self):
# tzoffset doesn't care
tz_offset = tz.tzoffset('+3', 3600)
self.assertEqual(dt_time(13, 20, tzinfo=tz_offset).utcoffset(),
timedelta(seconds=3600))
def testTzOffsetRepr(self):
tname = 'EST'
tzo = tz.tzoffset(tname, -5 * 3600)
self.assertEqual(repr(tzo), "tzoffset(" + repr(tname) + ", -18000)")
def testEquality(self):
utc = tz.tzoffset('UTC', 0)
gmt = tz.tzoffset('GMT', 0)
self.assertEqual(utc, gmt)
def testUTCEquality(self):
utc = tz.UTC
o_utc = tz.tzoffset('UTC', 0)
self.assertEqual(utc, o_utc)
self.assertEqual(o_utc, utc)
def testInequalityInvalid(self):
tzo = tz.tzoffset('-3', -3 * 3600)
self.assertFalse(tzo == -3)
self.assertNotEqual(tzo, -3)
def testInequalityUnsupported(self):
tzo = tz.tzoffset('-5', -5 * 3600)
self.assertTrue(tzo == ComparesEqual)
self.assertFalse(tzo != ComparesEqual)
self.assertEqual(tzo, ComparesEqual)
def testAmbiguity(self):
# Pick an arbitrary datetime, this should always return False.
dt = datetime(2011, 9, 1, 2, 30, tzinfo=tz.tzoffset("EST", -5 * 3600))
self.assertFalse(tz.datetime_ambiguous(dt))
def testTzOffsetInstance(self):
tz1 = tz.tzoffset.instance('EST', timedelta(hours=-5))
tz2 = tz.tzoffset.instance('EST', timedelta(hours=-5))
assert tz1 is not tz2
def testTzOffsetSingletonDifferent(self):
tz1 = tz.tzoffset('EST', timedelta(hours=-5))
tz2 = tz.tzoffset('EST', -18000)
assert tz1 is tz2
@pytest.mark.smoke
@pytest.mark.tzoffset
def test_tzoffset_weakref():
UTC1 = tz.tzoffset('UTC', 0)
UTC_ref = weakref.ref(tz.tzoffset('UTC', 0))
UTC1 is UTC_ref()
del UTC1
gc.collect()
assert UTC_ref() is not None # Should be in the strong cache
assert UTC_ref() is tz.tzoffset('UTC', 0)
# Fill the strong cache with other items
for offset in range(5,15):
tz.tzoffset('RandomZone', offset)
gc.collect()
assert UTC_ref() is None
assert UTC_ref() is not tz.tzoffset('UTC', 0)
@pytest.mark.tzoffset
@pytest.mark.parametrize('args', [
('UTC', 0),
('EST', -18000),
('EST', timedelta(hours=-5)),
(None, timedelta(hours=3)),
])
def test_tzoffset_singleton(args):
tz1 = tz.tzoffset(*args)
tz2 = tz.tzoffset(*args)
assert tz1 is tz2
@pytest.mark.tzoffset
@pytest.mark.skipif(not SUPPORTS_SUB_MINUTE_OFFSETS,
reason='Sub-minute offsets not supported')
def test_tzoffset_sub_minute():
delta = timedelta(hours=12, seconds=30)
test_datetime = datetime(2000, 1, 1, tzinfo=tz.tzoffset(None, delta))
assert test_datetime.utcoffset() == delta
@pytest.mark.tzoffset
@pytest.mark.skipif(SUPPORTS_SUB_MINUTE_OFFSETS,
reason='Sub-minute offsets supported')
def test_tzoffset_sub_minute_rounding():
delta = timedelta(hours=12, seconds=30)
test_date = datetime(2000, 1, 1, tzinfo=tz.tzoffset(None, delta))
assert test_date.utcoffset() == timedelta(hours=12, minutes=1)
@pytest.mark.tzlocal
class TzLocalTest(unittest.TestCase):
def testEquality(self):
tz1 = tz.tzlocal()
tz2 = tz.tzlocal()
# Explicitly calling == and != here to ensure the operators work
self.assertTrue(tz1 == tz2)
self.assertFalse(tz1 != tz2)
def testInequalityFixedOffset(self):
tzl = tz.tzlocal()
tzos = tz.tzoffset('LST', tzl._std_offset.total_seconds())
tzod = tz.tzoffset('LDT', tzl._std_offset.total_seconds())
self.assertFalse(tzl == tzos)
self.assertFalse(tzl == tzod)
self.assertTrue(tzl != tzos)
self.assertTrue(tzl != tzod)
def testInequalityInvalid(self):
tzl = tz.tzlocal()
self.assertTrue(tzl != 1)
self.assertFalse(tzl == 1)
# TODO: Use some sort of universal local mocking so that it's clear
# that we're expecting tzlocal to *not* be Pacific/Kiritimati
LINT = tz.gettz('Pacific/Kiritimati')
self.assertTrue(tzl != LINT)
self.assertFalse(tzl == LINT)
def testInequalityUnsupported(self):
tzl = tz.tzlocal()
self.assertTrue(tzl == ComparesEqual)
self.assertFalse(tzl != ComparesEqual)
def testRepr(self):
tzl = tz.tzlocal()
self.assertEqual(repr(tzl), 'tzlocal()')
@pytest.mark.parametrize('args,kwargs', [
(('EST', -18000), {}),
(('EST', timedelta(hours=-5)), {}),
(('EST',), {'offset': -18000}),
(('EST',), {'offset': timedelta(hours=-5)}),
(tuple(), {'name': 'EST', 'offset': -18000})
])
def test_tzoffset_is(args, kwargs):
tz_ref = tz.tzoffset('EST', -18000)
assert tz.tzoffset(*args, **kwargs) is tz_ref
def test_tzoffset_is_not():
assert tz.tzoffset('EDT', -14400) is not tz.tzoffset('EST', -18000)
@pytest.mark.tzlocal
@unittest.skipIf(IS_WIN, "requires Unix")
@unittest.skipUnless(TZEnvContext.tz_change_allowed(),
TZEnvContext.tz_change_disallowed_message())
class TzLocalNixTest(unittest.TestCase, TzFoldMixin):
# This is a set of tests for `tzlocal()` on *nix systems
# POSIX string indicating change to summer time on the 2nd Sunday in March
# at 2AM, and ending the 1st Sunday in November at 2AM. (valid >= 2007)
TZ_EST = 'EST+5EDT,M3.2.0/2,M11.1.0/2'
# POSIX string for AEST/AEDT (valid >= 2008)
TZ_AEST = 'AEST-10AEDT,M10.1.0/2,M4.1.0/3'
# POSIX string for BST/GMT
TZ_LON = 'GMT0BST,M3.5.0,M10.5.0'
# POSIX string for UTC
UTC = 'UTC'
def gettz(self, tzname):
# Actual time zone changes are handled by the _gettz_context function
return tz.tzlocal()
def _gettz_context(self, tzname):
tzname_map = {'Australia/Sydney': self.TZ_AEST,
'America/Toronto': self.TZ_EST,
'America/New_York': self.TZ_EST,
'Europe/London': self.TZ_LON}
return TZEnvContext(tzname_map.get(tzname, tzname))
def _testTzFunc(self, tzval, func, std_val, dst_val):
"""
This generates tests about how the behavior of a function ``func``
changes between STD and DST (e.g. utcoffset, tzname, dst).
It assume that DST starts the 2nd Sunday in March and ends the 1st
Sunday in November
"""
with TZEnvContext(tzval):
dt1 = datetime(2015, 2, 1, 12, 0, tzinfo=tz.tzlocal()) # STD
dt2 = datetime(2015, 5, 1, 12, 0, tzinfo=tz.tzlocal()) # DST
self.assertEqual(func(dt1), std_val)
self.assertEqual(func(dt2), dst_val)
def _testTzName(self, tzval, std_name, dst_name):
func = datetime.tzname
self._testTzFunc(tzval, func, std_name, dst_name)
def testTzNameDST(self):
# Test tzname in a zone with DST
self._testTzName(self.TZ_EST, 'EST', 'EDT')
def testTzNameUTC(self):
# Test tzname in a zone without DST
self._testTzName(self.UTC, 'UTC', 'UTC')
def _testOffset(self, tzval, std_off, dst_off):
func = datetime.utcoffset
self._testTzFunc(tzval, func, std_off, dst_off)
def testOffsetDST(self):
self._testOffset(self.TZ_EST, timedelta(hours=-5), timedelta(hours=-4))
def testOffsetUTC(self):
self._testOffset(self.UTC, timedelta(0), timedelta(0))
def _testDST(self, tzval, dst_dst):
func = datetime.dst
std_dst = timedelta(0)
self._testTzFunc(tzval, func, std_dst, dst_dst)
def testDSTDST(self):
self._testDST(self.TZ_EST, timedelta(hours=1))
def testDSTUTC(self):
self._testDST(self.UTC, timedelta(0))
def testTimeOnlyOffsetLocalUTC(self):
with TZEnvContext(self.UTC):
self.assertEqual(dt_time(13, 20, tzinfo=tz.tzlocal()).utcoffset(),
timedelta(0))
def testTimeOnlyOffsetLocalDST(self):
with TZEnvContext(self.TZ_EST):
self.assertIs(dt_time(13, 20, tzinfo=tz.tzlocal()).utcoffset(),
None)
def testTimeOnlyDSTLocalUTC(self):
with TZEnvContext(self.UTC):
self.assertEqual(dt_time(13, 20, tzinfo=tz.tzlocal()).dst(),
timedelta(0))
def testTimeOnlyDSTLocalDST(self):
with TZEnvContext(self.TZ_EST):
self.assertIs(dt_time(13, 20, tzinfo=tz.tzlocal()).dst(),
None)
def testUTCEquality(self):
with TZEnvContext(self.UTC):
assert tz.tzlocal() == tz.UTC
# TODO: Maybe a better hack than this?
def mark_tzlocal_nix(f):
marks = [
pytest.mark.tzlocal,
pytest.mark.skipif(IS_WIN, reason='requires Unix'),
pytest.mark.skipif(not TZEnvContext.tz_change_allowed,
reason=TZEnvContext.tz_change_disallowed_message())
]
for mark in reversed(marks):
f = mark(f)
return f
@mark_tzlocal_nix
@pytest.mark.parametrize('tzvar', ['UTC', 'GMT0', 'UTC0'])
def test_tzlocal_utc_equal(tzvar):
with TZEnvContext(tzvar):
assert tz.tzlocal() == tz.UTC
@mark_tzlocal_nix
@pytest.mark.parametrize('tzvar', [
'Europe/London', 'America/New_York',
'GMT0BST', 'EST5EDT'])
def test_tzlocal_utc_unequal(tzvar):
with TZEnvContext(tzvar):
assert tz.tzlocal() != tz.UTC
@mark_tzlocal_nix
def test_tzlocal_local_time_trim_colon():
with TZEnvContext(':/etc/localtime'):
assert tz.gettz() is not None
@mark_tzlocal_nix
@pytest.mark.parametrize('tzvar, tzoff', [
('EST5', tz.tzoffset('EST', -18000)),