Google Git
Sign in
android / platform / external / python / cpython3 / 1d4089b5d208ae6f0bd256304fd77f04c0b4fd41 / . / Lib / test / datetimetester.py
blob: d3fa7530edd4c76cacbdb50dcb669181087c267d [file] [log] [blame]
"""Test date/time type.
See http://www.zope.org/Members/fdrake/DateTimeWiki/TestCases
"""
from test.support import is_resource_enabled
import itertools
import bisect
import copy
import decimal
import sys
import os
import pickle
import random
import struct
import unittest
from array import array
from operator import lt, le, gt, ge, eq, ne, truediv, floordiv, mod
from test import support
import datetime as datetime_module
from datetime import MINYEAR, MAXYEAR
from datetime import timedelta
from datetime import tzinfo
from datetime import time
from datetime import timezone
from datetime import date, datetime
import time as _time
# Needed by test_datetime
import _strptime
#
pickle_choices = [(pickle, pickle, proto)
for proto in range(pickle.HIGHEST_PROTOCOL + 1)]
assert len(pickle_choices) == pickle.HIGHEST_PROTOCOL + 1
# An arbitrary collection of objects of non-datetime types, for testing
# mixed-type comparisons.
OTHERSTUFF = (10, 34.5, "abc", {}, [], ())
# XXX Copied from test_float.
INF = float("inf")
NAN = float("nan")
#############################################################################
# module tests
class TestModule(unittest.TestCase):
def test_constants(self):
datetime = datetime_module
self.assertEqual(datetime.MINYEAR, 1)
self.assertEqual(datetime.MAXYEAR, 9999)
def test_name_cleanup(self):
if '_Pure' in self.__class__.__name__:
self.skipTest('Only run for Fast C implementation')
datetime = datetime_module
names = set(name for name in dir(datetime)
if not name.startswith('__') and not name.endswith('__'))
allowed = set(['MAXYEAR', 'MINYEAR', 'date', 'datetime',
'datetime_CAPI', 'time', 'timedelta', 'timezone',
'tzinfo'])
self.assertEqual(names - allowed, set([]))
def test_divide_and_round(self):
if '_Fast' in self.__class__.__name__:
self.skipTest('Only run for Pure Python implementation')
dar = datetime_module._divide_and_round
self.assertEqual(dar(-10, -3), 3)
self.assertEqual(dar(5, -2), -2)
# four cases: (2 signs of a) x (2 signs of b)
self.assertEqual(dar(7, 3), 2)
self.assertEqual(dar(-7, 3), -2)
self.assertEqual(dar(7, -3), -2)
self.assertEqual(dar(-7, -3), 2)
# ties to even - eight cases:
# (2 signs of a) x (2 signs of b) x (even / odd quotient)
self.assertEqual(dar(10, 4), 2)
self.assertEqual(dar(-10, 4), -2)
self.assertEqual(dar(10, -4), -2)
self.assertEqual(dar(-10, -4), 2)
self.assertEqual(dar(6, 4), 2)
self.assertEqual(dar(-6, 4), -2)
self.assertEqual(dar(6, -4), -2)
self.assertEqual(dar(-6, -4), 2)
#############################################################################
# tzinfo tests
class FixedOffset(tzinfo):
def __init__(self, offset, name, dstoffset=42):
if isinstance(offset, int):
offset = timedelta(minutes=offset)
if isinstance(dstoffset, int):
dstoffset = timedelta(minutes=dstoffset)
self.__offset = offset
self.__name = name
self.__dstoffset = dstoffset
def __repr__(self):
return self.__name.lower()
def utcoffset(self, dt):
return self.__offset
def tzname(self, dt):
return self.__name
def dst(self, dt):
return self.__dstoffset
class PicklableFixedOffset(FixedOffset):
def __init__(self, offset=None, name=None, dstoffset=None):
FixedOffset.__init__(self, offset, name, dstoffset)
def __getstate__(self):
return self.__dict__
class _TZInfo(tzinfo):
def utcoffset(self, datetime_module):
return random.random()
class TestTZInfo(unittest.TestCase):
def test_refcnt_crash_bug_22044(self):
tz1 = _TZInfo()
dt1 = datetime(2014, 7, 21, 11, 32, 3, 0, tz1)
with self.assertRaises(TypeError):
dt1.utcoffset()
def test_non_abstractness(self):
# In order to allow subclasses to get pickled, the C implementation
# wasn't able to get away with having __init__ raise
# NotImplementedError.
useless = tzinfo()
dt = datetime.max
self.assertRaises(NotImplementedError, useless.tzname, dt)
self.assertRaises(NotImplementedError, useless.utcoffset, dt)
self.assertRaises(NotImplementedError, useless.dst, dt)
def test_subclass_must_override(self):
class NotEnough(tzinfo):
def __init__(self, offset, name):
self.__offset = offset
self.__name = name
self.assertTrue(issubclass(NotEnough, tzinfo))
ne = NotEnough(3, "NotByALongShot")
self.assertIsInstance(ne, tzinfo)
dt = datetime.now()
self.assertRaises(NotImplementedError, ne.tzname, dt)
self.assertRaises(NotImplementedError, ne.utcoffset, dt)
self.assertRaises(NotImplementedError, ne.dst, dt)
def test_normal(self):
fo = FixedOffset(3, "Three")
self.assertIsInstance(fo, tzinfo)
for dt in datetime.now(), None:
self.assertEqual(fo.utcoffset(dt), timedelta(minutes=3))
self.assertEqual(fo.tzname(dt), "Three")
self.assertEqual(fo.dst(dt), timedelta(minutes=42))
def test_pickling_base(self):
# There's no point to pickling tzinfo objects on their own (they
# carry no data), but they need to be picklable anyway else
# concrete subclasses can't be pickled.
orig = tzinfo.__new__(tzinfo)
self.assertIs(type(orig), tzinfo)
for pickler, unpickler, proto in pickle_choices:
green = pickler.dumps(orig, proto)
derived = unpickler.loads(green)
self.assertIs(type(derived), tzinfo)
def test_pickling_subclass(self):
# Make sure we can pickle/unpickle an instance of a subclass.
offset = timedelta(minutes=-300)
for otype, args in [
(PicklableFixedOffset, (offset, 'cookie')),
(timezone, (offset,)),
(timezone, (offset, "EST"))]:
orig = otype(*args)
oname = orig.tzname(None)
self.assertIsInstance(orig, tzinfo)
self.assertIs(type(orig), otype)
self.assertEqual(orig.utcoffset(None), offset)
self.assertEqual(orig.tzname(None), oname)
for pickler, unpickler, proto in pickle_choices:
green = pickler.dumps(orig, proto)
derived = unpickler.loads(green)
self.assertIsInstance(derived, tzinfo)
self.assertIs(type(derived), otype)
self.assertEqual(derived.utcoffset(None), offset)
self.assertEqual(derived.tzname(None), oname)
def test_issue23600(self):
DSTDIFF = DSTOFFSET = timedelta(hours=1)
class UKSummerTime(tzinfo):
"""Simple time zone which pretends to always be in summer time, since
that's what shows the failure.
"""
def utcoffset(self, dt):
return DSTOFFSET
def dst(self, dt):
return DSTDIFF
def tzname(self, dt):
return 'UKSummerTime'
tz = UKSummerTime()
u = datetime(2014, 4, 26, 12, 1, tzinfo=tz)
t = tz.fromutc(u)
self.assertEqual(t - t.utcoffset(), u)
class TestTimeZone(unittest.TestCase):
def setUp(self):
self.ACDT = timezone(timedelta(hours=9.5), 'ACDT')
self.EST = timezone(-timedelta(hours=5), 'EST')
self.DT = datetime(2010, 1, 1)
def test_str(self):
for tz in [self.ACDT, self.EST, timezone.utc,
timezone.min, timezone.max]:
self.assertEqual(str(tz), tz.tzname(None))
def test_repr(self):
datetime = datetime_module
for tz in [self.ACDT, self.EST, timezone.utc,
timezone.min, timezone.max]:
# test round-trip
tzrep = repr(tz)
self.assertEqual(tz, eval(tzrep))
def test_class_members(self):
limit = timedelta(hours=23, minutes=59)
self.assertEqual(timezone.utc.utcoffset(None), ZERO)
self.assertEqual(timezone.min.utcoffset(None), -limit)
self.assertEqual(timezone.max.utcoffset(None), limit)
def test_constructor(self):
self.assertIs(timezone.utc, timezone(timedelta(0)))
self.assertIsNot(timezone.utc, timezone(timedelta(0), 'UTC'))
self.assertEqual(timezone.utc, timezone(timedelta(0), 'UTC'))
# invalid offsets
for invalid in [timedelta(microseconds=1), timedelta(1, 1),
timedelta(seconds=1), timedelta(1), -timedelta(1)]:
self.assertRaises(ValueError, timezone, invalid)
self.assertRaises(ValueError, timezone, -invalid)
with self.assertRaises(TypeError): timezone(None)
with self.assertRaises(TypeError): timezone(42)
with self.assertRaises(TypeError): timezone(ZERO, None)
with self.assertRaises(TypeError): timezone(ZERO, 42)
with self.assertRaises(TypeError): timezone(ZERO, 'ABC', 'extra')
def test_inheritance(self):
self.assertIsInstance(timezone.utc, tzinfo)
self.assertIsInstance(self.EST, tzinfo)
def test_utcoffset(self):
dummy = self.DT
for h in [0, 1.5, 12]:
offset = h * HOUR
self.assertEqual(offset, timezone(offset).utcoffset(dummy))
self.assertEqual(-offset, timezone(-offset).utcoffset(dummy))
with self.assertRaises(TypeError): self.EST.utcoffset('')
with self.assertRaises(TypeError): self.EST.utcoffset(5)
def test_dst(self):
self.assertIsNone(timezone.utc.dst(self.DT))
with self.assertRaises(TypeError): self.EST.dst('')
with self.assertRaises(TypeError): self.EST.dst(5)
def test_tzname(self):
self.assertEqual('UTC', timezone.utc.tzname(None))
self.assertEqual('UTC', timezone(ZERO).tzname(None))
self.assertEqual('UTC-05:00', timezone(-5 * HOUR).tzname(None))
self.assertEqual('UTC+09:30', timezone(9.5 * HOUR).tzname(None))
self.assertEqual('UTC-00:01', timezone(timedelta(minutes=-1)).tzname(None))
self.assertEqual('XYZ', timezone(-5 * HOUR, 'XYZ').tzname(None))
with self.assertRaises(TypeError): self.EST.tzname('')
with self.assertRaises(TypeError): self.EST.tzname(5)
def test_fromutc(self):
with self.assertRaises(ValueError):
timezone.utc.fromutc(self.DT)
with self.assertRaises(TypeError):
timezone.utc.fromutc('not datetime')
for tz in [self.EST, self.ACDT, Eastern]:
utctime = self.DT.replace(tzinfo=tz)
local = tz.fromutc(utctime)
self.assertEqual(local - utctime, tz.utcoffset(local))
self.assertEqual(local,
self.DT.replace(tzinfo=timezone.utc))
def test_comparison(self):
self.assertNotEqual(timezone(ZERO), timezone(HOUR))
self.assertEqual(timezone(HOUR), timezone(HOUR))
self.assertEqual(timezone(-5 * HOUR), timezone(-5 * HOUR, 'EST'))
with self.assertRaises(TypeError): timezone(ZERO) < timezone(ZERO)
self.assertIn(timezone(ZERO), {timezone(ZERO)})
self.assertTrue(timezone(ZERO) != None)
self.assertFalse(timezone(ZERO) == None)
def test_aware_datetime(self):
# test that timezone instances can be used by datetime
t = datetime(1, 1, 1)
for tz in [timezone.min, timezone.max, timezone.utc]:
self.assertEqual(tz.tzname(t),
t.replace(tzinfo=tz).tzname())
self.assertEqual(tz.utcoffset(t),
t.replace(tzinfo=tz).utcoffset())
self.assertEqual(tz.dst(t),
t.replace(tzinfo=tz).dst())
def test_pickle(self):
for tz in self.ACDT, self.EST, timezone.min, timezone.max:
for pickler, unpickler, proto in pickle_choices:
tz_copy = unpickler.loads(pickler.dumps(tz, proto))
self.assertEqual(tz_copy, tz)
tz = timezone.utc
for pickler, unpickler, proto in pickle_choices:
tz_copy = unpickler.loads(pickler.dumps(tz, proto))
self.assertIs(tz_copy, tz)
def test_copy(self):
for tz in self.ACDT, self.EST, timezone.min, timezone.max:
tz_copy = copy.copy(tz)
self.assertEqual(tz_copy, tz)
tz = timezone.utc
tz_copy = copy.copy(tz)
self.assertIs(tz_copy, tz)
def test_deepcopy(self):
for tz in self.ACDT, self.EST, timezone.min, timezone.max:
tz_copy = copy.deepcopy(tz)
self.assertEqual(tz_copy, tz)
tz = timezone.utc
tz_copy = copy.deepcopy(tz)
self.assertIs(tz_copy, tz)
#############################################################################
# Base class for testing a particular aspect of timedelta, time, date and
# datetime comparisons.
class HarmlessMixedComparison:
# Test that __eq__ and __ne__ don't complain for mixed-type comparisons.
# Subclasses must define 'theclass', and theclass(1, 1, 1) must be a
# legit constructor.
def test_harmless_mixed_comparison(self):
me = self.theclass(1, 1, 1)
self.assertFalse(me == ())
self.assertTrue(me != ())
self.assertFalse(() == me)
self.assertTrue(() != me)
self.assertIn(me, [1, 20, [], me])
self.assertIn([], [me, 1, 20, []])
def test_harmful_mixed_comparison(self):
me = self.theclass(1, 1, 1)
self.assertRaises(TypeError, lambda: me < ())
self.assertRaises(TypeError, lambda: me <= ())
self.assertRaises(TypeError, lambda: me > ())
self.assertRaises(TypeError, lambda: me >= ())
self.assertRaises(TypeError, lambda: () < me)
self.assertRaises(TypeError, lambda: () <= me)
self.assertRaises(TypeError, lambda: () > me)
self.assertRaises(TypeError, lambda: () >= me)
#############################################################################
# timedelta tests
class TestTimeDelta(HarmlessMixedComparison, unittest.TestCase):
theclass = timedelta
def test_constructor(self):
eq = self.assertEqual
td = timedelta
# Check keyword args to constructor
eq(td(), td(weeks=0, days=0, hours=0, minutes=0, seconds=0,
milliseconds=0, microseconds=0))
eq(td(1), td(days=1))
eq(td(0, 1), td(seconds=1))
eq(td(0, 0, 1), td(microseconds=1))
eq(td(weeks=1), td(days=7))
eq(td(days=1), td(hours=24))
eq(td(hours=1), td(minutes=60))
eq(td(minutes=1), td(seconds=60))
eq(td(seconds=1), td(milliseconds=1000))
eq(td(milliseconds=1), td(microseconds=1000))
# Check float args to constructor
eq(td(weeks=1.0/7), td(days=1))
eq(td(days=1.0/24), td(hours=1))
eq(td(hours=1.0/60), td(minutes=1))
eq(td(minutes=1.0/60), td(seconds=1))
eq(td(seconds=0.001), td(milliseconds=1))
eq(td(milliseconds=0.001), td(microseconds=1))
def test_computations(self):
eq = self.assertEqual
td = timedelta
a = td(7) # One week
b = td(0, 60) # One minute
c = td(0, 0, 1000) # One millisecond
eq(a+b+c, td(7, 60, 1000))
eq(a-b, td(6, 24*3600 - 60))
eq(b.__rsub__(a), td(6, 24*3600 - 60))
eq(-a, td(-7))
eq(+a, td(7))
eq(-b, td(-1, 24*3600 - 60))
eq(-c, td(-1, 24*3600 - 1, 999000))
eq(abs(a), a)
eq(abs(-a), a)
eq(td(6, 24*3600), a)
eq(td(0, 0, 60*1000000), b)
eq(a*10, td(70))
eq(a*10, 10*a)
eq(a*10, 10*a)
eq(b*10, td(0, 600))
eq(10*b, td(0, 600))
eq(b*10, td(0, 600))
eq(c*10, td(0, 0, 10000))
eq(10*c, td(0, 0, 10000))
eq(c*10, td(0, 0, 10000))
eq(a*-1, -a)
eq(b*-2, -b-b)
eq(c*-2, -c+-c)
eq(b*(60*24), (b*60)*24)
eq(b*(60*24), (60*b)*24)
eq(c*1000, td(0, 1))
eq(1000*c, td(0, 1))
eq(a//7, td(1))
eq(b//10, td(0, 6))
eq(c//1000, td(0, 0, 1))
eq(a//10, td(0, 7*24*360))
eq(a//3600000, td(0, 0, 7*24*1000))
eq(a/0.5, td(14))
eq(b/0.5, td(0, 120))
eq(a/7, td(1))
eq(b/10, td(0, 6))
eq(c/1000, td(0, 0, 1))
eq(a/10, td(0, 7*24*360))
eq(a/3600000, td(0, 0, 7*24*1000))
# Multiplication by float
us = td(microseconds=1)
eq((3*us) * 0.5, 2*us)
eq((5*us) * 0.5, 2*us)
eq(0.5 * (3*us), 2*us)
eq(0.5 * (5*us), 2*us)
eq((-3*us) * 0.5, -2*us)
eq((-5*us) * 0.5, -2*us)
# Issue #23521
eq(td(seconds=1) * 0.123456, td(microseconds=123456))
eq(td(seconds=1) * 0.6112295, td(microseconds=611229))
# Division by int and float
eq((3*us) / 2, 2*us)
eq((5*us) / 2, 2*us)
eq((-3*us) / 2.0, -2*us)
eq((-5*us) / 2.0, -2*us)
eq((3*us) / -2, -2*us)
eq((5*us) / -2, -2*us)
eq((3*us) / -2.0, -2*us)
eq((5*us) / -2.0, -2*us)
for i in range(-10, 10):
eq((i*us/3)//us, round(i/3))
for i in range(-10, 10):
eq((i*us/-3)//us, round(i/-3))
# Issue #23521
eq(td(seconds=1) / (1 / 0.6112295), td(microseconds=611229))
# Issue #11576
eq(td(999999999, 86399, 999999) - td(999999999, 86399, 999998),
td(0, 0, 1))
eq(td(999999999, 1, 1) - td(999999999, 1, 0),
td(0, 0, 1))
def test_disallowed_computations(self):
a = timedelta(42)
# Add/sub ints or floats should be illegal
for i in 1, 1.0:
self.assertRaises(TypeError, lambda: a+i)
self.assertRaises(TypeError, lambda: a-i)
self.assertRaises(TypeError, lambda: i+a)
self.assertRaises(TypeError, lambda: i-a)
# Division of int by timedelta doesn't make sense.
# Division by zero doesn't make sense.
zero = 0
self.assertRaises(TypeError, lambda: zero // a)
self.assertRaises(ZeroDivisionError, lambda: a // zero)
self.assertRaises(ZeroDivisionError, lambda: a / zero)
self.assertRaises(ZeroDivisionError, lambda: a / 0.0)
self.assertRaises(TypeError, lambda: a / '')
@support.requires_IEEE_754
def test_disallowed_special(self):
a = timedelta(42)
self.assertRaises(ValueError, a.__mul__, NAN)
self.assertRaises(ValueError, a.__truediv__, NAN)
def test_basic_attributes(self):
days, seconds, us = 1, 7, 31
td = timedelta(days, seconds, us)
self.assertEqual(td.days, days)
self.assertEqual(td.seconds, seconds)
self.assertEqual(td.microseconds, us)
def test_total_seconds(self):
td = timedelta(days=365)
self.assertEqual(td.total_seconds(), 31536000.0)
for total_seconds in [123456.789012, -123456.789012, 0.123456, 0, 1e6]:
td = timedelta(seconds=total_seconds)
self.assertEqual(td.total_seconds(), total_seconds)
# Issue8644: Test that td.total_seconds() has the same
# accuracy as td / timedelta(seconds=1).
for ms in [-1, -2, -123]:
td = timedelta(microseconds=ms)
self.assertEqual(td.total_seconds(), td / timedelta(seconds=1))
def test_carries(self):
t1 = timedelta(days=100,
weeks=-7,
hours=-24*(100-49),
minutes=-3,
seconds=12,
microseconds=(3*60 - 12) * 1e6 + 1)
t2 = timedelta(microseconds=1)
self.assertEqual(t1, t2)
def test_hash_equality(self):
t1 = timedelta(days=100,
weeks=-7,
hours=-24*(100-49),
minutes=-3,
seconds=12,
microseconds=(3*60 - 12) * 1000000)
t2 = timedelta()
self.assertEqual(hash(t1), hash(t2))
t1 += timedelta(weeks=7)
t2 += timedelta(days=7*7)
self.assertEqual(t1, t2)
self.assertEqual(hash(t1), hash(t2))
d = {t1: 1}
d[t2] = 2
self.assertEqual(len(d), 1)
self.assertEqual(d[t1], 2)
def test_pickling(self):
args = 12, 34, 56
orig = timedelta(*args)
for pickler, unpickler, proto in pickle_choices:
green = pickler.dumps(orig, proto)
derived = unpickler.loads(green)
self.assertEqual(orig, derived)
def test_compare(self):
t1 = timedelta(2, 3, 4)
t2 = timedelta(2, 3, 4)
self.assertEqual(t1, t2)
self.assertTrue(t1 <= t2)
self.assertTrue(t1 >= t2)
self.assertFalse(t1 != t2)
self.assertFalse(t1 < t2)
self.assertFalse(t1 > t2)
for args in (3, 3, 3), (2, 4, 4), (2, 3, 5):
t2 = timedelta(*args) # this is larger than t1
self.assertTrue(t1 < t2)
self.assertTrue(t2 > t1)
self.assertTrue(t1 <= t2)
self.assertTrue(t2 >= t1)
self.assertTrue(t1 != t2)
self.assertTrue(t2 != t1)
self.assertFalse(t1 == t2)
self.assertFalse(t2 == t1)
self.assertFalse(t1 > t2)
self.assertFalse(t2 < t1)
self.assertFalse(t1 >= t2)
self.assertFalse(t2 <= t1)
for badarg in OTHERSTUFF:
self.assertEqual(t1 == badarg, False)
self.assertEqual(t1 != badarg, True)
self.assertEqual(badarg == t1, False)
self.assertEqual(badarg != t1, True)
self.assertRaises(TypeError, lambda: t1 <= badarg)
self.assertRaises(TypeError, lambda: t1 < badarg)
self.assertRaises(TypeError, lambda: t1 > badarg)
self.assertRaises(TypeError, lambda: t1 >= badarg)
self.assertRaises(TypeError, lambda: badarg <= t1)
self.assertRaises(TypeError, lambda: badarg < t1)
self.assertRaises(TypeError, lambda: badarg > t1)
self.assertRaises(TypeError, lambda: badarg >= t1)
def test_str(self):
td = timedelta
eq = self.assertEqual
eq(str(td(1)), "1 day, 0:00:00")
eq(str(td(-1)), "-1 day, 0:00:00")
eq(str(td(2)), "2 days, 0:00:00")
eq(str(td(-2)), "-2 days, 0:00:00")
eq(str(td(hours=12, minutes=58, seconds=59)), "12:58:59")
eq(str(td(hours=2, minutes=3, seconds=4)), "2:03:04")
eq(str(td(weeks=-30, hours=23, minutes=12, seconds=34)),
"-210 days, 23:12:34")
eq(str(td(milliseconds=1)), "0:00:00.001000")
eq(str(td(microseconds=3)), "0:00:00.000003")
eq(str(td(days=999999999, hours=23, minutes=59, seconds=59,
microseconds=999999)),
"999999999 days, 23:59:59.999999")
def test_repr(self):
name = 'datetime.' + self.theclass.__name__
self.assertEqual(repr(self.theclass(1)),
"%s(1)" % name)
self.assertEqual(repr(self.theclass(10, 2)),
"%s(10, 2)" % name)
self.assertEqual(repr(self.theclass(-10, 2, 400000)),
"%s(-10, 2, 400000)" % name)
def test_roundtrip(self):
for td in (timedelta(days=999999999, hours=23, minutes=59,
seconds=59, microseconds=999999),
timedelta(days=-999999999),
timedelta(days=-999999999, seconds=1),
timedelta(days=1, seconds=2, microseconds=3)):
# Verify td -> string -> td identity.
s = repr(td)
self.assertTrue(s.startswith('datetime.'))
s = s[9:]
td2 = eval(s)
self.assertEqual(td, td2)
# Verify identity via reconstructing from pieces.
td2 = timedelta(td.days, td.seconds, td.microseconds)
self.assertEqual(td, td2)
def test_resolution_info(self):
self.assertIsInstance(timedelta.min, timedelta)
self.assertIsInstance(timedelta.max, timedelta)
self.assertIsInstance(timedelta.resolution, timedelta)
self.assertTrue(timedelta.max > timedelta.min)
self.assertEqual(timedelta.min, timedelta(-999999999))
self.assertEqual(timedelta.max, timedelta(999999999, 24*3600-1, 1e6-1))
self.assertEqual(timedelta.resolution, timedelta(0, 0, 1))
def test_overflow(self):
tiny = timedelta.resolution
td = timedelta.min + tiny
td -= tiny # no problem
self.assertRaises(OverflowError, td.__sub__, tiny)
self.assertRaises(OverflowError, td.__add__, -tiny)
td = timedelta.max - tiny
td += tiny # no problem
self.assertRaises(OverflowError, td.__add__, tiny)
self.assertRaises(OverflowError, td.__sub__, -tiny)
self.assertRaises(OverflowError, lambda: -timedelta.max)
day = timedelta(1)
self.assertRaises(OverflowError, day.__mul__, 10**9)
self.assertRaises(OverflowError, day.__mul__, 1e9)
self.assertRaises(OverflowError, day.__truediv__, 1e-20)
self.assertRaises(OverflowError, day.__truediv__, 1e-10)
self.assertRaises(OverflowError, day.__truediv__, 9e-10)
@support.requires_IEEE_754
def _test_overflow_special(self):
day = timedelta(1)
self.assertRaises(OverflowError, day.__mul__, INF)
self.assertRaises(OverflowError, day.__mul__, -INF)
def test_microsecond_rounding(self):
td = timedelta
eq = self.assertEqual
# Single-field rounding.
eq(td(milliseconds=0.4/1000), td(0)) # rounds to 0
eq(td(milliseconds=-0.4/1000), td(0)) # rounds to 0
eq(td(milliseconds=0.5/1000), td(microseconds=0))
eq(td(milliseconds=-0.5/1000), td(microseconds=-0))
eq(td(milliseconds=0.6/1000), td(microseconds=1))
eq(td(milliseconds=-0.6/1000), td(microseconds=-1))
eq(td(milliseconds=1.5/1000), td(microseconds=2))
eq(td(milliseconds=-1.5/1000), td(microseconds=-2))
eq(td(seconds=0.5/10**6), td(microseconds=0))
eq(td(seconds=-0.5/10**6), td(microseconds=-0))
eq(td(seconds=1/2**7), td(microseconds=7812))
eq(td(seconds=-1/2**7), td(microseconds=-7812))
# Rounding due to contributions from more than one field.
us_per_hour = 3600e6
us_per_day = us_per_hour * 24
eq(td(days=.4/us_per_day), td(0))
eq(td(hours=.2/us_per_hour), td(0))
eq(td(days=.4/us_per_day, hours=.2/us_per_hour), td(microseconds=1))
eq(td(days=-.4/us_per_day), td(0))
eq(td(hours=-.2/us_per_hour), td(0))
eq(td(days=-.4/us_per_day, hours=-.2/us_per_hour), td(microseconds=-1))
# Test for a patch in Issue 8860
eq(td(microseconds=0.5), 0.5*td(microseconds=1.0))
eq(td(microseconds=0.5)//td.resolution, 0.5*td.resolution//td.resolution)
def test_massive_normalization(self):
td = timedelta(microseconds=-1)
self.assertEqual((td.days, td.seconds, td.microseconds),
(-1, 24*3600-1, 999999))
def test_bool(self):
self.assertTrue(timedelta(1))
self.assertTrue(timedelta(0, 1))
self.assertTrue(timedelta(0, 0, 1))
self.assertTrue(timedelta(microseconds=1))
self.assertFalse(timedelta(0))
def test_subclass_timedelta(self):
class T(timedelta):
@staticmethod
def from_td(td):
return T(td.days, td.seconds, td.microseconds)
def as_hours(self):
sum = (self.days * 24 +
self.seconds / 3600.0 +
self.microseconds / 3600e6)
return round(sum)
t1 = T(days=1)
self.assertIs(type(t1), T)
self.assertEqual(t1.as_hours(), 24)
t2 = T(days=-1, seconds=-3600)
self.assertIs(type(t2), T)
self.assertEqual(t2.as_hours(), -25)
t3 = t1 + t2
self.assertIs(type(t3), timedelta)
t4 = T.from_td(t3)
self.assertIs(type(t4), T)
self.assertEqual(t3.days, t4.days)
self.assertEqual(t3.seconds, t4.seconds)
self.assertEqual(t3.microseconds, t4.microseconds)
self.assertEqual(str(t3), str(t4))
self.assertEqual(t4.as_hours(), -1)
def test_division(self):
t = timedelta(hours=1, minutes=24, seconds=19)
second = timedelta(seconds=1)
self.assertEqual(t / second, 5059.0)
self.assertEqual(t // second, 5059)
t = timedelta(minutes=2, seconds=30)
minute = timedelta(minutes=1)
self.assertEqual(t / minute, 2.5)
self.assertEqual(t // minute, 2)
zerotd = timedelta(0)
self.assertRaises(ZeroDivisionError, truediv, t, zerotd)
self.assertRaises(ZeroDivisionError, floordiv, t, zerotd)
# self.assertRaises(TypeError, truediv, t, 2)
# note: floor division of a timedelta by an integer *is*
# currently permitted.
def test_remainder(self):
t = timedelta(minutes=2, seconds=30)
minute = timedelta(minutes=1)
r = t % minute
self.assertEqual(r, timedelta(seconds=30))
t = timedelta(minutes=-2, seconds=30)
r = t % minute
self.assertEqual(r, timedelta(seconds=30))
zerotd = timedelta(0)
self.assertRaises(ZeroDivisionError, mod, t, zerotd)
self.assertRaises(TypeError, mod, t, 10)
def test_divmod(self):
t = timedelta(minutes=2, seconds=30)
minute = timedelta(minutes=1)
q, r = divmod(t, minute)
self.assertEqual(q, 2)
self.assertEqual(r, timedelta(seconds=30))
t = timedelta(minutes=-2, seconds=30)
q, r = divmod(t, minute)
self.assertEqual(q, -2)
self.assertEqual(r, timedelta(seconds=30))
zerotd = timedelta(0)
self.assertRaises(ZeroDivisionError, divmod, t, zerotd)
self.assertRaises(TypeError, divmod, t, 10)
def test_issue31293(self):
# The interpreter shouldn't crash in case a timedelta is divided or
# multiplied by a float with a bad as_integer_ratio() method.
def get_bad_float(bad_ratio):
class BadFloat(float):
def as_integer_ratio(self):
return bad_ratio
return BadFloat()
with self.assertRaises(TypeError):
timedelta() / get_bad_float(1 << 1000)
with self.assertRaises(TypeError):
timedelta() * get_bad_float(1 << 1000)
for bad_ratio in [(), (42, ), (1, 2, 3)]:
with self.assertRaises(ValueError):
timedelta() / get_bad_float(bad_ratio)
with self.assertRaises(ValueError):
timedelta() * get_bad_float(bad_ratio)
def test_issue31752(self):
# The interpreter shouldn't crash because divmod() returns negative
# remainder.
class BadInt(int):
def __mul__(self, other):
return Prod()
class Prod:
def __radd__(self, other):
return Sum()
class Sum(int):
def __divmod__(self, other):
# negative remainder
return (0, -1)
timedelta(microseconds=BadInt(1))
timedelta(hours=BadInt(1))
timedelta(weeks=BadInt(1))
#############################################################################
# date tests
class TestDateOnly(unittest.TestCase):
# Tests here won't pass if also run on datetime objects, so don't
# subclass this to test datetimes too.
def test_delta_non_days_ignored(self):
dt = date(2000, 1, 2)
delta = timedelta(days=1, hours=2, minutes=3, seconds=4,
microseconds=5)
days = timedelta(delta.days)
self.assertEqual(days, timedelta(1))
dt2 = dt + delta
self.assertEqual(dt2, dt + days)
dt2 = delta + dt
self.assertEqual(dt2, dt + days)
dt2 = dt - delta
self.assertEqual(dt2, dt - days)
delta = -delta
days = timedelta(delta.days)
self.assertEqual(days, timedelta(-2))
dt2 = dt + delta
self.assertEqual(dt2, dt + days)
dt2 = delta + dt
self.assertEqual(dt2, dt + days)
dt2 = dt - delta
self.assertEqual(dt2, dt - days)
class SubclassDate(date):
sub_var = 1
class TestDate(HarmlessMixedComparison, unittest.TestCase):
# Tests here should pass for both dates and datetimes, except for a
# few tests that TestDateTime overrides.
theclass = date
def test_basic_attributes(self):
dt = self.theclass(2002, 3, 1)
self.assertEqual(dt.year, 2002)
self.assertEqual(dt.month, 3)
self.assertEqual(dt.day, 1)
def test_roundtrip(self):
for dt in (self.theclass(1, 2, 3),
self.theclass.today()):
# Verify dt -> string -> date identity.
s = repr(dt)
self.assertTrue(s.startswith('datetime.'))
s = s[9:]
dt2 = eval(s)
self.assertEqual(dt, dt2)
# Verify identity via reconstructing from pieces.
dt2 = self.theclass(dt.year, dt.month, dt.day)
self.assertEqual(dt, dt2)
def test_ordinal_conversions(self):
# Check some fixed values.
for y, m, d, n in [(1, 1, 1, 1), # calendar origin
(1, 12, 31, 365),
(2, 1, 1, 366),
# first example from "Calendrical Calculations"
(1945, 11, 12, 710347)]:
d = self.theclass(y, m, d)
self.assertEqual(n, d.toordinal())
fromord = self.theclass.fromordinal(n)
self.assertEqual(d, fromord)
if hasattr(fromord, "hour"):
# if we're checking something fancier than a date, verify
# the extra fields have been zeroed out
self.assertEqual(fromord.hour, 0)
self.assertEqual(fromord.minute, 0)
self.assertEqual(fromord.second, 0)
self.assertEqual(fromord.microsecond, 0)
# Check first and last days of year spottily across the whole
# range of years supported.
for year in range(MINYEAR, MAXYEAR+1, 7):
# Verify (year, 1, 1) -> ordinal -> y, m, d is identity.
d = self.theclass(year, 1, 1)
n = d.toordinal()
d2 = self.theclass.fromordinal(n)
self.assertEqual(d, d2)
# Verify that moving back a day gets to the end of year-1.
if year > 1:
d = self.theclass.fromordinal(n-1)
d2 = self.theclass(year-1, 12, 31)
self.assertEqual(d, d2)
self.assertEqual(d2.toordinal(), n-1)
# Test every day in a leap-year and a non-leap year.
dim = [31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31]
for year, isleap in (2000, True), (2002, False):
n = self.theclass(year, 1, 1).toordinal()
for month, maxday in zip(range(1, 13), dim):
if month == 2 and isleap:
maxday += 1
for day in range(1, maxday+1):
d = self.theclass(year, month, day)
self.assertEqual(d.toordinal(), n)
self.assertEqual(d, self.theclass.fromordinal(n))
n += 1
def test_extreme_ordinals(self):
a = self.theclass.min
a = self.theclass(a.year, a.month, a.day) # get rid of time parts
aord = a.toordinal()
b = a.fromordinal(aord)
self.assertEqual(a, b)
self.assertRaises(ValueError, lambda: a.fromordinal(aord - 1))
b = a + timedelta(days=1)
self.assertEqual(b.toordinal(), aord + 1)
self.assertEqual(b, self.theclass.fromordinal(aord + 1))
a = self.theclass.max
a = self.theclass(a.year, a.month, a.day) # get rid of time parts
aord = a.toordinal()
b = a.fromordinal(aord)
self.assertEqual(a, b)
self.assertRaises(ValueError, lambda: a.fromordinal(aord + 1))
b = a - timedelta(days=1)
self.assertEqual(b.toordinal(), aord - 1)
self.assertEqual(b, self.theclass.fromordinal(aord - 1))
def test_bad_constructor_arguments(self):
# bad years
self.theclass(MINYEAR, 1, 1) # no exception
self.theclass(MAXYEAR, 1, 1) # no exception
self.assertRaises(ValueError, self.theclass, MINYEAR-1, 1, 1)
self.assertRaises(ValueError, self.theclass, MAXYEAR+1, 1, 1)
# bad months
self.theclass(2000, 1, 1) # no exception
self.theclass(2000, 12, 1) # no exception
self.assertRaises(ValueError, self.theclass, 2000, 0, 1)
self.assertRaises(ValueError, self.theclass, 2000, 13, 1)
# bad days
self.theclass(2000, 2, 29) # no exception
self.theclass(2004, 2, 29) # no exception
self.theclass(2400, 2, 29) # no exception
self.assertRaises(ValueError, self.theclass, 2000, 2, 30)
self.assertRaises(ValueError, self.theclass, 2001, 2, 29)
self.assertRaises(ValueError, self.theclass, 2100, 2, 29)
self.assertRaises(ValueError, self.theclass, 1900, 2, 29)
self.assertRaises(ValueError, self.theclass, 2000, 1, 0)
self.assertRaises(ValueError, self.theclass, 2000, 1, 32)
def test_hash_equality(self):
d = self.theclass(2000, 12, 31)
# same thing
e = self.theclass(2000, 12, 31)
self.assertEqual(d, e)
self.assertEqual(hash(d), hash(e))
dic = {d: 1}
dic[e] = 2
self.assertEqual(len(dic), 1)
self.assertEqual(dic[d], 2)
self.assertEqual(dic[e], 2)
d = self.theclass(2001, 1, 1)
# same thing
e = self.theclass(2001, 1, 1)
self.assertEqual(d, e)
self.assertEqual(hash(d), hash(e))
dic = {d: 1}
dic[e] = 2
self.assertEqual(len(dic), 1)
self.assertEqual(dic[d], 2)
self.assertEqual(dic[e], 2)
def test_computations(self):
a = self.theclass(2002, 1, 31)
b = self.theclass(1956, 1, 31)
c = self.theclass(2001,2,1)
diff = a-b
self.assertEqual(diff.days, 46*365 + len(range(1956, 2002, 4)))
self.assertEqual(diff.seconds, 0)
self.assertEqual(diff.microseconds, 0)
day = timedelta(1)
week = timedelta(7)
a = self.theclass(2002, 3, 2)
self.assertEqual(a + day, self.theclass(2002, 3, 3))
self.assertEqual(day + a, self.theclass(2002, 3, 3))
self.assertEqual(a - day, self.theclass(2002, 3, 1))
self.assertEqual(-day + a, self.theclass(2002, 3, 1))
self.assertEqual(a + week, self.theclass(2002, 3, 9))
self.assertEqual(a - week, self.theclass(2002, 2, 23))
self.assertEqual(a + 52*week, self.theclass(2003, 3, 1))
self.assertEqual(a - 52*week, self.theclass(2001, 3, 3))
self.assertEqual((a + week) - a, week)
self.assertEqual((a + day) - a, day)
self.assertEqual((a - week) - a, -week)
self.assertEqual((a - day) - a, -day)
self.assertEqual(a - (a + week), -week)
self.assertEqual(a - (a + day), -day)
self.assertEqual(a - (a - week), week)
self.assertEqual(a - (a - day), day)
self.assertEqual(c - (c - day), day)
# Add/sub ints or floats should be illegal
for i in 1, 1.0:
self.assertRaises(TypeError, lambda: a+i)
self.assertRaises(TypeError, lambda: a-i)
self.assertRaises(TypeError, lambda: i+a)
self.assertRaises(TypeError, lambda: i-a)
# delta - date is senseless.
self.assertRaises(TypeError, lambda: day - a)
# mixing date and (delta or date) via * or // is senseless
self.assertRaises(TypeError, lambda: day * a)
self.assertRaises(TypeError, lambda: a * day)
self.assertRaises(TypeError, lambda: day // a)
self.assertRaises(TypeError, lambda: a // day)
self.assertRaises(TypeError, lambda: a * a)
self.assertRaises(TypeError, lambda: a // a)
# date + date is senseless
self.assertRaises(TypeError, lambda: a + a)
def test_overflow(self):
tiny = self.theclass.resolution
for delta in [tiny, timedelta(1), timedelta(2)]:
dt = self.theclass.min + delta
dt -= delta # no problem
self.assertRaises(OverflowError, dt.__sub__, delta)
self.assertRaises(OverflowError, dt.__add__, -delta)
dt = self.theclass.max - delta
dt += delta # no problem
self.assertRaises(OverflowError, dt.__add__, delta)
self.assertRaises(OverflowError, dt.__sub__, -delta)
def test_fromtimestamp(self):
import time
# Try an arbitrary fixed value.
year, month, day = 1999, 9, 19
ts = time.mktime((year, month, day, 0, 0, 0, 0, 0, -1))
d = self.theclass.fromtimestamp(ts)
self.assertEqual(d.year, year)
self.assertEqual(d.month, month)
self.assertEqual(d.day, day)
def test_insane_fromtimestamp(self):
# It's possible that some platform maps time_t to double,
# and that this test will fail there. This test should
# exempt such platforms (provided they return reasonable
# results!).
for insane in -1e200, 1e200:
self.assertRaises(OverflowError, self.theclass.fromtimestamp,
insane)
def test_today(self):
import time
# We claim that today() is like fromtimestamp(time.time()), so
# prove it.
for dummy in range(3):
today = self.theclass.today()
ts = time.time()
todayagain = self.theclass.fromtimestamp(ts)
if today == todayagain:
break
# There are several legit reasons that could fail:
# 1. It recently became midnight, between the today() and the
# time() calls.
# 2. The platform time() has such fine resolution that we'll
# never get the same value twice.
# 3. The platform time() has poor resolution, and we just
# happened to call today() right before a resolution quantum
# boundary.
# 4. The system clock got fiddled between calls.
# In any case, wait a little while and try again.
time.sleep(0.1)
# It worked or it didn't. If it didn't, assume it's reason #2, and
# let the test pass if they're within half a second of each other.
if today != todayagain:
self.assertAlmostEqual(todayagain, today,
delta=timedelta(seconds=0.5))
def test_weekday(self):
for i in range(7):
# March 4, 2002 is a Monday
self.assertEqual(self.theclass(2002, 3, 4+i).weekday(), i)
self.assertEqual(self.theclass(2002, 3, 4+i).isoweekday(), i+1)
# January 2, 1956 is a Monday
self.assertEqual(self.theclass(1956, 1, 2+i).weekday(), i)
self.assertEqual(self.theclass(1956, 1, 2+i).isoweekday(), i+1)
def test_isocalendar(self):
# Check examples from
# http://www.phys.uu.nl/~vgent/calendar/isocalendar.htm
for i in range(7):
d = self.theclass(2003, 12, 22+i)
self.assertEqual(d.isocalendar(), (2003, 52, i+1))
d = self.theclass(2003, 12, 29) + timedelta(i)
self.assertEqual(d.isocalendar(), (2004, 1, i+1))
d = self.theclass(2004, 1, 5+i)
self.assertEqual(d.isocalendar(), (2004, 2, i+1))
d = self.theclass(2009, 12, 21+i)
self.assertEqual(d.isocalendar(), (2009, 52, i+1))
d = self.theclass(2009, 12, 28) + timedelta(i)
self.assertEqual(d.isocalendar(), (2009, 53, i+1))
d = self.theclass(2010, 1, 4+i)
self.assertEqual(d.isocalendar(), (2010, 1, i+1))
def test_iso_long_years(self):
# Calculate long ISO years and compare to table from
# http://www.phys.uu.nl/~vgent/calendar/isocalendar.htm
ISO_LONG_YEARS_TABLE = """
4 32 60 88
9 37 65 93
15 43 71 99
20 48 76
26 54 82
105 133 161 189
111 139 167 195
116 144 172
122 150 178
128 156 184
201 229 257 285
207 235 263 291
212 240 268 296
218 246 274
224 252 280
303 331 359 387
308 336 364 392
314 342 370 398
320 348 376
325 353 381
"""
iso_long_years = sorted(map(int, ISO_LONG_YEARS_TABLE.split()))
L = []
for i in range(400):
d = self.theclass(2000+i, 12, 31)
d1 = self.theclass(1600+i, 12, 31)
self.assertEqual(d.isocalendar()[1:], d1.isocalendar()[1:])
if d.isocalendar()[1] == 53:
L.append(i)
self.assertEqual(L, iso_long_years)
def test_isoformat(self):
t = self.theclass(2, 3, 2)
self.assertEqual(t.isoformat(), "0002-03-02")
def test_ctime(self):
t = self.theclass(2002, 3, 2)
self.assertEqual(t.ctime(), "Sat Mar 2 00:00:00 2002")
def test_strftime(self):
t = self.theclass(2005, 3, 2)
self.assertEqual(t.strftime("m:%m d:%d y:%y"), "m:03 d:02 y:05")
self.assertEqual(t.strftime(""), "") # SF bug #761337
self.assertEqual(t.strftime('x'*1000), 'x'*1000) # SF bug #1556784
self.assertRaises(TypeError, t.strftime) # needs an arg
self.assertRaises(TypeError, t.strftime, "one", "two") # too many args
self.assertRaises(TypeError, t.strftime, 42) # arg wrong type
# test that unicode input is allowed (issue 2782)
self.assertEqual(t.strftime("%m"), "03")
# A naive object replaces %z and %Z w/ empty strings.
self.assertEqual(t.strftime("'%z' '%Z'"), "'' ''")
#make sure that invalid format specifiers are handled correctly
#self.assertRaises(ValueError, t.strftime, "%e")
#self.assertRaises(ValueError, t.strftime, "%")
#self.assertRaises(ValueError, t.strftime, "%#")
#oh well, some systems just ignore those invalid ones.
#at least, exercise them to make sure that no crashes
#are generated
for f in ["%e", "%", "%#"]:
try:
t.strftime(f)
except ValueError:
pass
#check that this standard extension works
t.strftime("%f")
def test_format(self):
dt = self.theclass(2007, 9, 10)
self.assertEqual(dt.__format__(''), str(dt))
with self.assertRaisesRegex(TypeError, 'must be str, not int'):
dt.__format__(123)
# check that a derived class's __str__() gets called
class A(self.theclass):
def __str__(self):
return 'A'
a = A(2007, 9, 10)
self.assertEqual(a.__format__(''), 'A')
# check that a derived class's strftime gets called
class B(self.theclass):
def strftime(self, format_spec):
return 'B'
b = B(2007, 9, 10)
self.assertEqual(b.__format__(''), str(dt))
for fmt in ["m:%m d:%d y:%y",
"m:%m d:%d y:%y H:%H M:%M S:%S",
"%z %Z",
]:
self.assertEqual(dt.__format__(fmt), dt.strftime(fmt))
self.assertEqual(a.__format__(fmt), dt.strftime(fmt))
self.assertEqual(b.__format__(fmt), 'B')
def test_resolution_info(self):
# XXX: Should min and max respect subclassing?
if issubclass(self.theclass, datetime):
expected_class = datetime
else:
expected_class = date
self.assertIsInstance(self.theclass.min, expected_class)
self.assertIsInstance(self.theclass.max, expected_class)
self.assertIsInstance(self.theclass.resolution, timedelta)
self.assertTrue(self.theclass.max > self.theclass.min)
def test_extreme_timedelta(self):
big = self.theclass.max - self.theclass.min
# 3652058 days, 23 hours, 59 minutes, 59 seconds, 999999 microseconds
n = (big.days*24*3600 + big.seconds)*1000000 + big.microseconds
# n == 315537897599999999 ~= 2**58.13
justasbig = timedelta(0, 0, n)
self.assertEqual(big, justasbig)
self.assertEqual(self.theclass.min + big, self.theclass.max)
self.assertEqual(self.theclass.max - big, self.theclass.min)
def test_timetuple(self):
for i in range(7):
# January 2, 1956 is a Monday (0)
d = self.theclass(1956, 1, 2+i)
t = d.timetuple()
self.assertEqual(t, (1956, 1, 2+i, 0, 0, 0, i, 2+i, -1))
# February 1, 1956 is a Wednesday (2)
d = self.theclass(1956, 2, 1+i)
t = d.timetuple()
self.assertEqual(t, (1956, 2, 1+i, 0, 0, 0, (2+i)%7, 32+i, -1))
# March 1, 1956 is a Thursday (3), and is the 31+29+1 = 61st day
# of the year.
d = self.theclass(1956, 3, 1+i)
t = d.timetuple()
self.assertEqual(t, (1956, 3, 1+i, 0, 0, 0, (3+i)%7, 61+i, -1))
self.assertEqual(t.tm_year, 1956)
self.assertEqual(t.tm_mon, 3)
self.assertEqual(t.tm_mday, 1+i)
self.assertEqual(t.tm_hour, 0)
self.assertEqual(t.tm_min, 0)
self.assertEqual(t.tm_sec, 0)
self.assertEqual(t.tm_wday, (3+i)%7)
self.assertEqual(t.tm_yday, 61+i)
self.assertEqual(t.tm_isdst, -1)
def test_pickling(self):
args = 6, 7, 23
orig = self.theclass(*args)
for pickler, unpickler, proto in pickle_choices:
green = pickler.dumps(orig, proto)
derived = unpickler.loads(green)
self.assertEqual(orig, derived)
self.assertEqual(orig.__reduce__(), orig.__reduce_ex__(2))
def test_compare(self):
t1 = self.theclass(2, 3, 4)
t2 = self.theclass(2, 3, 4)
self.assertEqual(t1, t2)
self.assertTrue(t1 <= t2)
self.assertTrue(t1 >= t2)
self.assertFalse(t1 != t2)
self.assertFalse(t1 < t2)
self.assertFalse(t1 > t2)
for args in (3, 3, 3), (2, 4, 4), (2, 3, 5):
t2 = self.theclass(*args) # this is larger than t1
self.assertTrue(t1 < t2)
self.assertTrue(t2 > t1)
self.assertTrue(t1 <= t2)
self.assertTrue(t2 >= t1)
self.assertTrue(t1 != t2)
self.assertTrue(t2 != t1)
self.assertFalse(t1 == t2)
self.assertFalse(t2 == t1)
self.assertFalse(t1 > t2)
self.assertFalse(t2 < t1)
self.assertFalse(t1 >= t2)
self.assertFalse(t2 <= t1)
for badarg in OTHERSTUFF:
self.assertEqual(t1 == badarg, False)
self.assertEqual(t1 != badarg, True)
self.assertEqual(badarg == t1, False)
self.assertEqual(badarg != t1, True)
self.assertRaises(TypeError, lambda: t1 < badarg)
self.assertRaises(TypeError, lambda: t1 > badarg)
self.assertRaises(TypeError, lambda: t1 >= badarg)
self.assertRaises(TypeError, lambda: badarg <= t1)
self.assertRaises(TypeError, lambda: badarg < t1)
self.assertRaises(TypeError, lambda: badarg > t1)
self.assertRaises(TypeError, lambda: badarg >= t1)
def test_mixed_compare(self):
our = self.theclass(2000, 4, 5)
# Our class can be compared for equality to other classes
self.assertEqual(our == 1, False)
self.assertEqual(1 == our, False)
self.assertEqual(our != 1, True)
self.assertEqual(1 != our, True)
# But the ordering is undefined
self.assertRaises(TypeError, lambda: our < 1)
self.assertRaises(TypeError, lambda: 1 < our)
# Repeat those tests with a different class
class SomeClass:
pass
their = SomeClass()
self.assertEqual(our == their, False)
self.assertEqual(their == our, False)
self.assertEqual(our != their, True)
self.assertEqual(their != our, True)
self.assertRaises(TypeError, lambda: our < their)
self.assertRaises(TypeError, lambda: their < our)
# However, if the other class explicitly defines ordering
# relative to our class, it is allowed to do so
class LargerThanAnything:
def __lt__(self, other):
return False
def __le__(self, other):
return isinstance(other, LargerThanAnything)
def __eq__(self, other):
return isinstance(other, LargerThanAnything)
def __gt__(self, other):
return not isinstance(other, LargerThanAnything)
def __ge__(self, other):
return True
their = LargerThanAnything()
self.assertEqual(our == their, False)
self.assertEqual(their == our, False)
self.assertEqual(our != their, True)
self.assertEqual(their != our, True)
self.assertEqual(our < their, True)
self.assertEqual(their < our, False)
def test_bool(self):
# All dates are considered true.
self.assertTrue(self.theclass.min)
self.assertTrue(self.theclass.max)
def test_strftime_y2k(self):
for y in (1, 49, 70, 99, 100, 999, 1000, 1970):
d = self.theclass(y, 1, 1)
# Issue 13305: For years < 1000, the value is not always
# padded to 4 digits across platforms. The C standard
# assumes year >= 1900, so it does not specify the number
# of digits.
if d.strftime("%Y") != '%04d' % y:
# Year 42 returns '42', not padded
self.assertEqual(d.strftime("%Y"), '%d' % y)
# '0042' is obtained anyway
self.assertEqual(d.strftime("%4Y"), '%04d' % y)
def test_replace(self):
cls = self.theclass
args = [1, 2, 3]
base = cls(*args)
self.assertEqual(base, base.replace())
i = 0
for name, newval in (("year", 2),
("month", 3),
("day", 4)):
newargs = args[:]
newargs[i] = newval
expected = cls(*newargs)
got = base.replace(**{name: newval})
self.assertEqual(expected, got)
i += 1
# Out of bounds.
base = cls(2000, 2, 29)
self.assertRaises(ValueError, base.replace, year=2001)
def test_subclass_replace(self):
class DateSubclass(self.theclass):
pass
dt = DateSubclass(2012, 1, 1)
self.assertIs(type(dt.replace(year=2013)), DateSubclass)
def test_subclass_date(self):
class C(self.theclass):
theAnswer = 42
def __new__(cls, *args, **kws):
temp = kws.copy()
extra = temp.pop('extra')
result = self.theclass.__new__(cls, *args, **temp)
result.extra = extra
return result
def newmeth(self, start):
return start + self.year + self.month
args = 2003, 4, 14
dt1 = self.theclass(*args)
dt2 = C(*args, **{'extra': 7})
self.assertEqual(dt2.__class__, C)
self.assertEqual(dt2.theAnswer, 42)
self.assertEqual(dt2.extra, 7)
self.assertEqual(dt1.toordinal(), dt2.toordinal())
self.assertEqual(dt2.newmeth(-7), dt1.year + dt1.month - 7)
def test_pickling_subclass_date(self):
args = 6, 7, 23
orig = SubclassDate(*args)
for pickler, unpickler, proto in pickle_choices:
green = pickler.dumps(orig, proto)
derived = unpickler.loads(green)
self.assertEqual(orig, derived)
def test_backdoor_resistance(self):
# For fast unpickling, the constructor accepts a pickle byte string.
# This is a low-overhead backdoor. A user can (by intent or
# mistake) pass a string directly, which (if it's the right length)
# will get treated like a pickle, and bypass the normal sanity
# checks in the constructor. This can create insane objects.
# The constructor doesn't want to burn the time to validate all
# fields, but does check the month field. This stops, e.g.,
# datetime.datetime('1995-03-25') from yielding an insane object.
base = b'1995-03-25'
if not issubclass(self.theclass, datetime):
base = base[:4]
for month_byte in b'9', b'\0', b'\r', b'\xff':
self.assertRaises(TypeError, self.theclass,
base[:2] + month_byte + base[3:])
if issubclass(self.theclass, datetime):
# Good bytes, but bad tzinfo:
with self.assertRaisesRegex(TypeError, '^bad tzinfo state arg$'):
self.theclass(bytes([1] * len(base)), 'EST')
for ord_byte in range(1, 13):
# This shouldn't blow up because of the month byte alone. If
# the implementation changes to do more-careful checking, it may
# blow up because other fields are insane.
self.theclass(base[:2] + bytes([ord_byte]) + base[3:])
#############################################################################
# datetime tests
class SubclassDatetime(datetime):
sub_var = 1
class TestDateTime(TestDate):
theclass = datetime
def test_basic_attributes(self):
dt = self.theclass(2002, 3, 1, 12, 0)
self.assertEqual(dt.year, 2002)
self.assertEqual(dt.month, 3)
self.assertEqual(dt.day, 1)
self.assertEqual(dt.hour, 12)
self.assertEqual(dt.minute, 0)
self.assertEqual(dt.second, 0)
self.assertEqual(dt.microsecond, 0)
def test_basic_attributes_nonzero(self):
# Make sure all attributes are non-zero so bugs in
# bit-shifting access show up.
dt = self.theclass(2002, 3, 1, 12, 59, 59, 8000)
self.assertEqual(dt.year, 2002)
self.assertEqual(dt.month, 3)
self.assertEqual(dt.day, 1)
self.assertEqual(dt.hour, 12)
self.assertEqual(dt.minute, 59)
self.assertEqual(dt.second, 59)
self.assertEqual(dt.microsecond, 8000)
def test_roundtrip(self):
for dt in (self.theclass(1, 2, 3, 4, 5, 6, 7),
self.theclass.now()):
# Verify dt -> string -> datetime identity.
s = repr(dt)
self.assertTrue(s.startswith('datetime.'))
s = s[9:]
dt2 = eval(s)
self.assertEqual(dt, dt2)
# Verify identity via reconstructing from pieces.
dt2 = self.theclass(dt.year, dt.month, dt.day,
dt.hour, dt.minute, dt.second,
dt.microsecond)
self.assertEqual(dt, dt2)
def test_isoformat(self):
t = self.theclass(1, 2, 3, 4, 5, 1, 123)
self.assertEqual(t.isoformat(), "0001-02-03T04:05:01.000123")
self.assertEqual(t.isoformat('T'), "0001-02-03T04:05:01.000123")
self.assertEqual(t.isoformat(' '), "0001-02-03 04:05:01.000123")
self.assertEqual(t.isoformat('\x00'), "0001-02-03\x0004:05:01.000123")
self.assertEqual(t.isoformat(timespec='hours'), "0001-02-03T04")
self.assertEqual(t.isoformat(timespec='minutes'), "0001-02-03T04:05")
self.assertEqual(t.isoformat(timespec='seconds'), "0001-02-03T04:05:01")
self.assertEqual(t.isoformat(timespec='milliseconds'), "0001-02-03T04:05:01.000")
self.assertEqual(t.isoformat(timespec='microseconds'), "0001-02-03T04:05:01.000123")
self.assertEqual(t.isoformat(timespec='auto'), "0001-02-03T04:05:01.000123")
self.assertEqual(t.isoformat(sep=' ', timespec='minutes'), "0001-02-03 04:05")
self.assertRaises(ValueError, t.isoformat, timespec='foo')
# str is ISO format with the separator forced to a blank.
self.assertEqual(str(t), "0001-02-03 04:05:01.000123")
t = self.theclass(1, 2, 3, 4, 5, 1, 999500, tzinfo=timezone.utc)
self.assertEqual(t.isoformat(timespec='milliseconds'), "0001-02-03T04:05:01.999+00:00")
t = self.theclass(1, 2, 3, 4, 5, 1, 999500)
self.assertEqual(t.isoformat(timespec='milliseconds'), "0001-02-03T04:05:01.999")
t = self.theclass(1, 2, 3, 4, 5, 1)
self.assertEqual(t.isoformat(timespec='auto'), "0001-02-03T04:05:01")
self.assertEqual(t.isoformat(timespec='milliseconds'), "0001-02-03T04:05:01.000")
self.assertEqual(t.isoformat(timespec='microseconds'), "0001-02-03T04:05:01.000000")
t = self.theclass(2, 3, 2)
self.assertEqual(t.isoformat(), "0002-03-02T00:00:00")
self.assertEqual(t.isoformat('T'), "0002-03-02T00:00:00")
self.assertEqual(t.isoformat(' '), "0002-03-02 00:00:00")
# str is ISO format with the separator forced to a blank.
self.assertEqual(str(t), "0002-03-02 00:00:00")
# ISO format with timezone
tz = FixedOffset(timedelta(seconds=16), 'XXX')
t = self.theclass(2, 3, 2, tzinfo=tz)
self.assertEqual(t.isoformat(), "0002-03-02T00:00:00+00:00:16")
def test_format(self):
dt = self.theclass(2007, 9, 10, 4, 5, 1, 123)
self.assertEqual(dt.__format__(''), str(dt))
with self.assertRaisesRegex(TypeError, 'must be str, not int'):
dt.__format__(123)
# check that a derived class's __str__() gets called
class A(self.theclass):
def __str__(self):
return 'A'
a = A(2007, 9, 10, 4, 5, 1, 123)
self.assertEqual(a.__format__(''), 'A')
# check that a derived class's strftime gets called
class B(self.theclass):
def strftime(self, format_spec):
return 'B'
b = B(2007, 9, 10, 4, 5, 1, 123)
self.assertEqual(b.__format__(''), str(dt))
for fmt in ["m:%m d:%d y:%y",
"m:%m d:%d y:%y H:%H M:%M S:%S",
"%z %Z",
]:
self.assertEqual(dt.__format__(fmt), dt.strftime(fmt))
self.assertEqual(a.__format__(fmt), dt.strftime(fmt))
self.assertEqual(b.__format__(fmt), 'B')
def test_more_ctime(self):
# Test fields that TestDate doesn't touch.
import time
t = self.theclass(2002, 3, 2, 18, 3, 5, 123)
self.assertEqual(t.ctime(), "Sat Mar 2 18:03:05 2002")
# Oops! The next line fails on Win2K under MSVC 6, so it's commented
# out. The difference is that t.ctime() produces " 2" for the day,
# but platform ctime() produces "02" for the day. According to
# C99, t.ctime() is correct here.
# self.assertEqual(t.ctime(), time.ctime(time.mktime(t.timetuple())))
# So test a case where that difference doesn't matter.
t = self.theclass(2002, 3, 22, 18, 3, 5, 123)
self.assertEqual(t.ctime(), time.ctime(time.mktime(t.timetuple())))
def test_tz_independent_comparing(self):
dt1 = self.theclass(2002, 3, 1, 9, 0, 0)
dt2 = self.theclass(2002, 3, 1, 10, 0, 0)
dt3 = self.theclass(2002, 3, 1, 9, 0, 0)
self.assertEqual(dt1, dt3)
self.assertTrue(dt2 > dt3)
# Make sure comparison doesn't forget microseconds, and isn't done
# via comparing a float timestamp (an IEEE double doesn't have enough
# precision to span microsecond resolution across years 1 through 9999,
# so comparing via timestamp necessarily calls some distinct values
# equal).
dt1 = self.theclass(MAXYEAR, 12, 31, 23, 59, 59, 999998)
us = timedelta(microseconds=1)
dt2 = dt1 + us
self.assertEqual(dt2 - dt1, us)
self.assertTrue(dt1 < dt2)
def test_strftime_with_bad_tzname_replace(self):
# verify ok if tzinfo.tzname().replace() returns a non-string
class MyTzInfo(FixedOffset):
def tzname(self, dt):
class MyStr(str):
def replace(self, *args):
return None
return MyStr('name')
t = self.theclass(2005, 3, 2, 0, 0, 0, 0, MyTzInfo(3, 'name'))
self.assertRaises(TypeError, t.strftime, '%Z')
def test_bad_constructor_arguments(self):
# bad years
self.theclass(MINYEAR, 1, 1) # no exception
self.theclass(MAXYEAR, 1, 1) # no exception
self.assertRaises(ValueError, self.theclass, MINYEAR-1, 1, 1)
self.assertRaises(ValueError, self.theclass, MAXYEAR+1, 1, 1)
# bad months
self.theclass(2000, 1, 1) # no exception
self.theclass(2000, 12, 1) # no exception
self.assertRaises(ValueError, self.theclass, 2000, 0, 1)
self.assertRaises(ValueError, self.theclass, 2000, 13, 1)
# bad days
self.theclass(2000, 2, 29) # no exception
self.theclass(2004, 2, 29) # no exception
self.theclass(2400, 2, 29) # no exception
self.assertRaises(ValueError, self.theclass, 2000, 2, 30)
self.assertRaises(ValueError, self.theclass, 2001, 2, 29)
self.assertRaises(ValueError, self.theclass, 2100, 2, 29)
self.assertRaises(ValueError, self.theclass, 1900, 2, 29)
self.assertRaises(ValueError, self.theclass, 2000, 1, 0)
self.assertRaises(ValueError, self.theclass, 2000, 1, 32)
# bad hours
self.theclass(2000, 1, 31, 0) # no exception
self.theclass(2000, 1, 31, 23) # no exception
self.assertRaises(ValueError, self.theclass, 2000, 1, 31, -1)
self.assertRaises(ValueError, self.theclass, 2000, 1, 31, 24)
# bad minutes
self.theclass(2000, 1, 31, 23, 0) # no exception
self.theclass(2000, 1, 31, 23, 59) # no exception
self.assertRaises(ValueError, self.theclass, 2000, 1, 31, 23, -1)
self.assertRaises(ValueError, self.theclass, 2000, 1, 31, 23, 60)
# bad seconds
self.theclass(2000, 1, 31, 23, 59, 0) # no exception
self.theclass(2000, 1, 31, 23, 59, 59) # no exception
self.assertRaises(ValueError, self.theclass, 2000, 1, 31, 23, 59, -1)
self.assertRaises(ValueError, self.theclass, 2000, 1, 31, 23, 59, 60)
# bad microseconds
self.theclass(2000, 1, 31, 23, 59, 59, 0) # no exception
self.theclass(2000, 1, 31, 23, 59, 59, 999999) # no exception
self.assertRaises(ValueError, self.theclass,
2000, 1, 31, 23, 59, 59, -1)
self.assertRaises(ValueError, self.theclass,
2000, 1, 31, 23, 59, 59,
1000000)
# bad fold
self.assertRaises(ValueError, self.theclass,
2000, 1, 31, fold=-1)
self.assertRaises(ValueError, self.theclass,
2000, 1, 31, fold=2)
# Positional fold:
self.assertRaises(TypeError, self.theclass,
2000, 1, 31, 23, 59, 59, 0, None, 1)
def test_hash_equality(self):
d = self.theclass(2000, 12, 31, 23, 30, 17)
e = self.theclass(2000, 12, 31, 23, 30, 17)
self.assertEqual(d, e)
self.assertEqual(hash(d), hash(e))
dic = {d: 1}
dic[e] = 2
self.assertEqual(len(dic), 1)
self.assertEqual(dic[d], 2)
self.assertEqual(dic[e], 2)
d = self.theclass(2001, 1, 1, 0, 5, 17)
e = self.theclass(2001, 1, 1, 0, 5, 17)
self.assertEqual(d, e)
self.assertEqual(hash(d), hash(e))
dic = {d: 1}
dic[e] = 2
self.assertEqual(len(dic), 1)
self.assertEqual(dic[d], 2)
self.assertEqual(dic[e], 2)
def test_computations(self):
a = self.theclass(2002, 1, 31)
b = self.theclass(1956, 1, 31)
diff = a-b
self.assertEqual(diff.days, 46*365 + len(range(1956, 2002, 4)))
self.assertEqual(diff.seconds, 0)
self.assertEqual(diff.microseconds, 0)
a = self.theclass(2002, 3, 2, 17, 6)
millisec = timedelta(0, 0, 1000)
hour = timedelta(0, 3600)
day = timedelta(1)
week = timedelta(7)
self.assertEqual(a + hour, self.theclass(2002, 3, 2, 18, 6))
self.assertEqual(hour + a, self.theclass(2002, 3, 2, 18, 6))
self.assertEqual(a + 10*hour, self.theclass(2002, 3, 3, 3, 6))
self.assertEqual(a - hour, self.theclass(2002, 3, 2, 16, 6))
self.assertEqual(-hour + a, self.theclass(2002, 3, 2, 16, 6))
self.assertEqual(a - hour, a + -hour)
self.assertEqual(a - 20*hour, self.theclass(2002, 3, 1, 21, 6))
self.assertEqual(a + day, self.theclass(2002, 3, 3, 17, 6))
self.assertEqual(a - day, self.theclass(2002, 3, 1, 17, 6))
self.assertEqual(a + week, self.theclass(2002, 3, 9, 17, 6))
self.assertEqual(a - week, self.theclass(2002, 2, 23, 17, 6))
self.assertEqual(a + 52*week, self.theclass(2003, 3, 1, 17, 6))
self.assertEqual(a - 52*week, self.theclass(2001, 3, 3, 17, 6))
self.assertEqual((a + week) - a, week)
self.assertEqual((a + day) - a, day)
self.assertEqual((a + hour) - a, hour)
self.assertEqual((a + millisec) - a, millisec)
self.assertEqual((a - week) - a, -week)
self.assertEqual((a - day) - a, -day)
self.assertEqual((a - hour) - a, -hour)
self.assertEqual((a - millisec) - a, -millisec)
self.assertEqual(a - (a + week), -week)
self.assertEqual(a - (a + day), -day)
self.assertEqual(a - (a + hour), -hour)
self.assertEqual(a - (a + millisec), -millisec)
self.assertEqual(a - (a - week), week)
self.assertEqual(a - (a - day), day)
self.assertEqual(a - (a - hour), hour)
self.assertEqual(a - (a - millisec), millisec)
self.assertEqual(a + (week + day + hour + millisec),
self.theclass(2002, 3, 10, 18, 6, 0, 1000))
self.assertEqual(a + (week + day + hour + millisec),
(((a + week) + day) + hour) + millisec)
self.assertEqual(a - (week + day + hour + millisec),
self.theclass(2002, 2, 22, 16, 5, 59, 999000))
self.assertEqual(a - (week + day + hour + millisec),
(((a - week) - day) - hour) - millisec)
# Add/sub ints or floats should be illegal
for i in 1, 1.0:
self.assertRaises(TypeError, lambda: a+i)
self.assertRaises(TypeError, lambda: a-i)
self.assertRaises(TypeError, lambda: i+a)
self.assertRaises(TypeError, lambda: i-a)
# delta - datetime is senseless.
self.assertRaises(TypeError, lambda: day - a)
# mixing datetime and (delta or datetime) via * or // is senseless
self.assertRaises(TypeError, lambda: day * a)
self.assertRaises(TypeError, lambda: a * day)
self.assertRaises(TypeError, lambda: day // a)
self.assertRaises(TypeError, lambda: a // day)
self.assertRaises(TypeError, lambda: a * a)
self.assertRaises(TypeError, lambda: a // a)
# datetime + datetime is senseless
self.assertRaises(TypeError, lambda: a + a)
def test_pickling(self):
args = 6, 7, 23, 20, 59, 1, 64**2
orig = self.theclass(*args)
for pickler, unpickler, proto in pickle_choices:
green = pickler.dumps(orig, proto)
derived = unpickler.loads(green)
self.assertEqual(orig, derived)
self.assertEqual(orig.__reduce__(), orig.__reduce_ex__(2))
def test_more_pickling(self):
a = self.theclass(2003, 2, 7, 16, 48, 37, 444116)
for proto in range(pickle.HIGHEST_PROTOCOL + 1):
s = pickle.dumps(a, proto)
b = pickle.loads(s)
self.assertEqual(b.year, 2003)
self.assertEqual(b.month, 2)
self.assertEqual(b.day, 7)
def test_pickling_subclass_datetime(self):
args = 6, 7, 23, 20, 59, 1, 64**2
orig = SubclassDatetime(*args)
for pickler, unpickler, proto in pickle_choices:
green = pickler.dumps(orig, proto)
derived = unpickler.loads(green)
self.assertEqual(orig, derived)
def test_more_compare(self):
# The test_compare() inherited from TestDate covers the error cases.
# We just want to test lexicographic ordering on the members datetime
# has that date lacks.
args = [2000, 11, 29, 20, 58, 16, 999998]
t1 = self.theclass(*args)
t2 = self.theclass(*args)
self.assertEqual(t1, t2)
self.assertTrue(t1 <= t2)
self.assertTrue(t1 >= t2)
self.assertFalse(t1 != t2)
self.assertFalse(t1 < t2)
self.assertFalse(t1 > t2)
for i in range(len(args)):
newargs = args[:]
newargs[i] = args[i] + 1
t2 = self.theclass(*newargs) # this is larger than t1
self.assertTrue(t1 < t2)
self.assertTrue(t2 > t1)
self.assertTrue(t1 <= t2)
self.assertTrue(t2 >= t1)
self.assertTrue(t1 != t2)
self.assertTrue(t2 != t1)
self.assertFalse(t1 == t2)
self.assertFalse(t2 == t1)
self.assertFalse(t1 > t2)
self.assertFalse(t2 < t1)
self.assertFalse(t1 >= t2)
self.assertFalse(t2 <= t1)
# A helper for timestamp constructor tests.
def verify_field_equality(self, expected, got):
self.assertEqual(expected.tm_year, got.year)
self.assertEqual(expected.tm_mon, got.month)
self.assertEqual(expected.tm_mday, got.day)
self.assertEqual(expected.tm_hour, got.hour)
self.assertEqual(expected.tm_min, got.minute)
self.assertEqual(expected.tm_sec, got.second)
def test_fromtimestamp(self):
import time
ts = time.time()
expected = time.localtime(ts)
got = self.theclass.fromtimestamp(ts)
self.verify_field_equality(expected, got)
def test_utcfromtimestamp(self):
import time
ts = time.time()
expected = time.gmtime(ts)
got = self.theclass.utcfromtimestamp(ts)
self.verify_field_equality(expected, got)
# Run with US-style DST rules: DST begins 2 a.m. on second Sunday in
# March (M3.2.0) and ends 2 a.m. on first Sunday in November (M11.1.0).
@support.run_with_tz('EST+05EDT,M3.2.0,M11.1.0')
def test_timestamp_naive(self):
t = self.theclass(1970, 1, 1)
self.assertEqual(t.timestamp(), 18000.0)
t = self.theclass(1970, 1, 1, 1, 2, 3, 4)
self.assertEqual(t.timestamp(),
18000.0 + 3600 + 2*60 + 3 + 4*1e-6)
# Missing hour
t0 = self.theclass(2012, 3, 11, 2, 30)
t1 = t0.replace(fold=1)
self.assertEqual(self.theclass.fromtimestamp(t1.timestamp()),
t0 - timedelta(hours=1))
self.assertEqual(self.theclass.fromtimestamp(t0.timestamp()),
t1 + timedelta(hours=1))
# Ambiguous hour defaults to DST
t = self.theclass(2012, 11, 4, 1, 30)
self.assertEqual(self.theclass.fromtimestamp(t.timestamp()), t)
# Timestamp may raise an overflow error on some platforms
# XXX: Do we care to support the first and last year?
for t in [self.theclass(2,1,1), self.theclass(9998,12,12)]:
try:
s = t.timestamp()
except OverflowError:
pass
else:
self.assertEqual(self.theclass.fromtimestamp(s), t)
def test_timestamp_aware(self):
t = self.theclass(1970, 1, 1, tzinfo=timezone.utc)
self.assertEqual(t.timestamp(), 0.0)
t = self.theclass(1970, 1, 1, 1, 2, 3, 4, tzinfo=timezone.utc)
self.assertEqual(t.timestamp(),
3600 + 2*60 + 3 + 4*1e-6)
t = self.theclass(1970, 1, 1, 1, 2, 3, 4,
tzinfo=timezone(timedelta(hours=-5), 'EST'))
self.assertEqual(t.timestamp(),
18000 + 3600 + 2*60 + 3 + 4*1e-6)
@support.run_with_tz('MSK-03') # Something east of Greenwich
def test_microsecond_rounding(self):
for fts in [self.theclass.fromtimestamp,
self.theclass.utcfromtimestamp]:
zero = fts(0)
self.assertEqual(zero.second, 0)
self.assertEqual(zero.microsecond, 0)
one = fts(1e-6)
try:
minus_one = fts(-1e-6)
except OSError:
# localtime(-1) and gmtime(-1) is not supported on Windows
pass
else:
self.assertEqual(minus_one.second, 59)
self.assertEqual(minus_one.microsecond, 999999)
t = fts(-1e-8)
self.assertEqual(t, zero)
t = fts(-9e-7)
self.assertEqual(t, minus_one)
t = fts(-1e-7)
self.assertEqual(t, zero)
t = fts(-1/2**7)
self.assertEqual(t.second, 59)
self.assertEqual(t.microsecond, 992188)
t = fts(1e-7)
self.assertEqual(t, zero)
t = fts(9e-7)
self.assertEqual(t, one)
t = fts(0.99999949)
self.assertEqual(t.second, 0)
self.assertEqual(t.microsecond, 999999)
t = fts(0.9999999)
self.assertEqual(t.second, 1)
self.assertEqual(t.microsecond, 0)
t = fts(1/2**7)
self.assertEqual(t.second, 0)
self.assertEqual(t.microsecond, 7812)
def test_timestamp_limits(self):
# minimum timestamp
min_dt = self.theclass.min.replace(tzinfo=timezone.utc)
min_ts = min_dt.timestamp()
try:
# date 0001-01-01 00:00:00+00:00: timestamp=-62135596800
self.assertEqual(self.theclass.fromtimestamp(min_ts, tz=timezone.utc),
min_dt)
except (OverflowError, OSError) as exc:
# the date 0001-01-01 doesn't fit into 32-bit time_t,
# or platform doesn't support such very old date
self.skipTest(str(exc))
# maximum timestamp: set seconds to zero to avoid rounding issues
max_dt = self.theclass.max.replace(tzinfo=timezone.utc,
second=0, microsecond=0)
max_ts = max_dt.timestamp()
# date 9999-12-31 23:59:00+00:00: timestamp 253402300740
self.assertEqual(self.theclass.fromtimestamp(max_ts, tz=timezone.utc),
max_dt)
# number of seconds greater than 1 year: make sure that the new date
# is not valid in datetime.datetime limits
delta = 3600 * 24 * 400
# too small
ts = min_ts - delta
# converting a Python int to C time_t can raise a OverflowError,
# especially on 32-bit platforms.
with self.assertRaises((ValueError, OverflowError)):
self.theclass.fromtimestamp(ts)
with self.assertRaises((ValueError, OverflowError)):
self.theclass.utcfromtimestamp(ts)
# too big
ts = max_dt.timestamp() + delta
with self.assertRaises((ValueError, OverflowError)):
self.theclass.fromtimestamp(ts)
with self.assertRaises((ValueError, OverflowError)):
self.theclass.utcfromtimestamp(ts)
def test_insane_fromtimestamp(self):
# It's possible that some platform maps time_t to double,
# and that this test will fail there. This test should
# exempt such platforms (provided they return reasonable
# results!).
for insane in -1e200, 1e200:
self.assertRaises(OverflowError, self.theclass.fromtimestamp,
insane)
def test_insane_utcfromtimestamp(self):
# It's possible that some platform maps time_t to double,
# and that this test will fail there. This test should
# exempt such platforms (provided they return reasonable
# results!).
for insane in -1e200, 1e200:
self.assertRaises(OverflowError, self.theclass.utcfromtimestamp,
insane)
@unittest.skipIf(sys.platform == "win32", "Windows doesn't accept negative timestamps")
def test_negative_float_fromtimestamp(self):
# The result is tz-dependent; at least test that this doesn't
# fail (like it did before bug 1646728 was fixed).
self.theclass.fromtimestamp(-1.05)
@unittest.skipIf(sys.platform == "win32", "Windows doesn't accept negative timestamps")
def test_negative_float_utcfromtimestamp(self):
d = self.theclass.utcfromtimestamp(-1.05)
self.assertEqual(d, self.theclass(1969, 12, 31, 23, 59, 58, 950000))
def test_utcnow(self):
import time
# Call it a success if utcnow() and utcfromtimestamp() are within
# a second of each other.
tolerance = timedelta(seconds=1)
for dummy in range(3):
from_now = self.theclass.utcnow()
from_timestamp = self.theclass.utcfromtimestamp(time.time())
if abs(from_timestamp - from_now) <= tolerance:
break
# Else try again a few times.
self.assertLessEqual(abs(from_timestamp - from_now), tolerance)
def test_strptime(self):
string = '2004-12-01 13:02:47.197'
format = '%Y-%m-%d %H:%M:%S.%f'
expected = _strptime._strptime_datetime(self.theclass, string, format)
got = self.theclass.strptime(string, format)
self.assertEqual(expected, got)
self.assertIs(type(expected), self.theclass)
self.assertIs(type(got), self.theclass)
strptime = self.theclass.strptime
self.assertEqual(strptime("+0002", "%z").utcoffset(), 2 * MINUTE)
self.assertEqual(strptime("-0002", "%z").utcoffset(), -2 * MINUTE)
# Only local timezone and UTC are supported
for tzseconds, tzname in ((0, 'UTC'), (0, 'GMT'),
(-_time.timezone, _time.tzname[0])):
if tzseconds < 0:
sign = '-'
seconds = -tzseconds
else:
sign ='+'
seconds = tzseconds
hours, minutes = divmod(seconds//60, 60)
dtstr = "{}{:02d}{:02d} {}".format(sign, hours, minutes, tzname)
dt = strptime(dtstr, "%z %Z")
self.assertEqual(dt.utcoffset(), timedelta(seconds=tzseconds))
self.assertEqual(dt.tzname(), tzname)
# Can produce inconsistent datetime
dtstr, fmt = "+1234 UTC", "%z %Z"
dt = strptime(dtstr, fmt)
self.assertEqual(dt.utcoffset(), 12 * HOUR + 34 * MINUTE)
self.assertEqual(dt.tzname(), 'UTC')
# yet will roundtrip
self.assertEqual(dt.strftime(fmt), dtstr)
# Produce naive datetime if no %z is provided
self.assertEqual(strptime("UTC", "%Z").tzinfo, None)
with self.assertRaises(ValueError): strptime("-2400", "%z")
with self.assertRaises(ValueError): strptime("-000", "%z")
def test_more_timetuple(self):
# This tests fields beyond those tested by the TestDate.test_timetuple.
t = self.theclass(2004, 12, 31, 6, 22, 33)
self.assertEqual(t.timetuple(), (2004, 12, 31, 6, 22, 33, 4, 366, -1))
self.assertEqual(t.timetuple(),
(t.year, t.month, t.day,
t.hour, t.minute, t.second,
t.weekday(),
t.toordinal() - date(t.year, 1, 1).toordinal() + 1,
-1))
tt = t.timetuple()
self.assertEqual(tt.tm_year, t.year)
self.assertEqual(tt.tm_mon, t.month)
self.assertEqual(tt.tm_mday, t.day)
self.assertEqual(tt.tm_hour, t.hour)
self.assertEqual(tt.tm_min, t.minute)
self.assertEqual(tt.tm_sec, t.second)
self.assertEqual(tt.tm_wday, t.weekday())
self.assertEqual(tt.tm_yday, t.toordinal() -
date(t.year, 1, 1).toordinal() + 1)
self.assertEqual(tt.tm_isdst, -1)
def test_more_strftime(self):
# This tests fields beyond those tested by the TestDate.test_strftime.
t = self.theclass(2004, 12, 31, 6, 22, 33, 47)
self.assertEqual(t.strftime("%m %d %y %f %S %M %H %j"),
"12 31 04 000047 33 22 06 366")
def test_extract(self):
dt = self.theclass(2002, 3, 4, 18, 45, 3, 1234)
self.assertEqual(dt.date(), date(2002, 3, 4))
self.assertEqual(dt.time(), time(18, 45, 3, 1234))
def test_combine(self):
d = date(2002, 3, 4)
t = time(18, 45, 3, 1234)
expected = self.theclass(2002, 3, 4, 18, 45, 3, 1234)
combine = self.theclass.combine
dt = combine(d, t)
self.assertEqual(dt, expected)
dt = combine(time=t, date=d)
self.assertEqual(dt, expected)
self.assertEqual(d, dt.date())
self.assertEqual(t, dt.time())
self.assertEqual(dt, combine(dt.date(), dt.time()))
self.assertRaises(TypeError, combine) # need an arg
self.assertRaises(TypeError, combine, d) # need two args
self.assertRaises(TypeError, combine, t, d) # args reversed
self.assertRaises(TypeError, combine, d, t, 1) # wrong tzinfo type
self.assertRaises(TypeError, combine, d, t, 1, 2) # too many args
self.assertRaises(TypeError, combine, "date", "time") # wrong types
self.assertRaises(TypeError, combine, d, "time") # wrong type
self.assertRaises(TypeError, combine, "date", t) # wrong type
# tzinfo= argument
dt = combine(d, t, timezone.utc)
self.assertIs(dt.tzinfo, timezone.utc)
dt = combine(d, t, tzinfo=timezone.utc)
self.assertIs(dt.tzinfo, timezone.utc)
t = time()
dt = combine(dt, t)
self.assertEqual(dt.date(), d)
self.assertEqual(dt.time(), t)
def test_replace(self):
cls = self.theclass
args = [1, 2, 3, 4, 5, 6, 7]
base = cls(*args)
self.assertEqual(base, base.replace())
i = 0
for name, newval in (("year", 2),
("month", 3),
("day", 4),
("hour", 5),
("minute", 6),
("second", 7),
("microsecond", 8)):
newargs = args[:]
newargs[i] = newval
expected = cls(*newargs)
got = base.replace(**{name: newval})
self.assertEqual(expected, got)
i += 1
# Out of bounds.
base = cls(2000, 2, 29)
self.assertRaises(ValueError, base.replace, year=2001)
@support.run_with_tz('EDT4')
def test_astimezone(self):
dt = self.theclass.now()
f = FixedOffset(44, "0044")
dt_utc = dt.replace(tzinfo=timezone(timedelta(hours=-4), 'EDT'))
self.assertEqual(dt.astimezone(), dt_utc) # naive
self.assertRaises(TypeError, dt.astimezone, f, f) # too many args
self.assertRaises(TypeError, dt.astimezone, dt) # arg wrong type
dt_f = dt.replace(tzinfo=f) + timedelta(hours=4, minutes=44)
self.assertEqual(dt.astimezone(f), dt_f) # naive
self.assertEqual(dt.astimezone(tz=f), dt_f) # naive
class Bogus(tzinfo):
def utcoffset(self, dt): return None
def dst(self, dt): return timedelta(0)
bog = Bogus()
self.assertRaises(ValueError, dt.astimezone, bog) # naive
self.assertEqual(dt.replace(tzinfo=bog).astimezone(f), dt_f)
class AlsoBogus(tzinfo):
def utcoffset(self, dt): return timedelta(0)
def dst(self, dt): return None
alsobog = AlsoBogus()
self.assertRaises(ValueError, dt.astimezone, alsobog) # also naive
class Broken(tzinfo):
def utcoffset(self, dt): return 1
def dst(self, dt): return 1
broken = Broken()
dt_broken = dt.replace(tzinfo=broken)
with self.assertRaises(TypeError):
dt_broken.astimezone()
def test_subclass_datetime(self):
class C(self.theclass):
theAnswer = 42
def __new__(cls, *args, **kws):
temp = kws.copy()
extra = temp.pop('extra')
result = self.theclass.__new__(cls, *args, **temp)
result.extra = extra
return result
def newmeth(self, start):
return start + self.year + self.month + self.second
args = 2003, 4, 14, 12, 13, 41
dt1 = self.theclass(*args)
dt2 = C(*args, **{'extra': 7})
self.assertEqual(dt2.__class__, C)
self.assertEqual(dt2.theAnswer, 42)
self.assertEqual(dt2.extra, 7)
self.assertEqual(dt1.toordinal(), dt2.toordinal())
self.assertEqual(dt2.newmeth(-7), dt1.year + dt1.month +
dt1.second - 7)
class TestSubclassDateTime(TestDateTime):
theclass = SubclassDatetime
# Override tests not designed for subclass
@unittest.skip('not appropriate for subclasses')
def test_roundtrip(self):
pass
class SubclassTime(time):
sub_var = 1
class TestTime(HarmlessMixedComparison, unittest.TestCase):
theclass = time
def test_basic_attributes(self):
t = self.theclass(12, 0)
self.assertEqual(t.hour, 12)
self.assertEqual(t.minute, 0)
self.assertEqual(t.second, 0)
self.assertEqual(t.microsecond, 0)
def test_basic_attributes_nonzero(self):
# Make sure all attributes are non-zero so bugs in
# bit-shifting access show up.
t = self.theclass(12, 59, 59, 8000)
self.assertEqual(t.hour, 12)
self.assertEqual(t.minute, 59)
self.assertEqual(t.second, 59)
self.assertEqual(t.microsecond, 8000)
def test_roundtrip(self):
t = self.theclass(1, 2, 3, 4)
# Verify t -> string -> time identity.
s = repr(t)
self.assertTrue(s.startswith('datetime.'))
s = s[9:]
t2 = eval(s)
self.assertEqual(t, t2)
# Verify identity via reconstructing from pieces.
t2 = self.theclass(t.hour, t.minute, t.second,
t.microsecond)
self.assertEqual(t, t2)
def test_comparing(self):
args = [1, 2, 3, 4]
t1 = self.theclass(*args)
t2 = self.theclass(*args)
self.assertEqual(t1, t2)
self.assertTrue(t1 <= t2)
self.assertTrue(t1 >= t2)
self.assertFalse(t1 != t2)
self.assertFalse(t1 < t2)
self.assertFalse(t1 > t2)
for i in range(len(args)):
newargs = args[:]
newargs[i] = args[i] + 1
t2 = self.theclass(*newargs) # this is larger than t1
self.assertTrue(t1 < t2)
self.assertTrue(t2 > t1)
self.assertTrue(t1 <= t2)
self.assertTrue(t2 >= t1)
self.assertTrue(t1 != t2)
self.assertTrue(t2 != t1)
self.assertFalse(t1 == t2)
self.assertFalse(t2 == t1)
self.assertFalse(t1 > t2)
self.assertFalse(t2 < t1)
self.assertFalse(t1 >= t2)
self.assertFalse(t2 <= t1)
for badarg in OTHERSTUFF:
self.assertEqual(t1 == badarg, False)
self.assertEqual(t1 != badarg, True)
self.assertEqual(badarg == t1, False)
self.assertEqual(badarg != t1, True)
self.assertRaises(TypeError, lambda: t1 <= badarg)
self.assertRaises(TypeError, lambda: t1 < badarg)
self.assertRaises(TypeError, lambda: t1 > badarg)
self.assertRaises(TypeError, lambda: t1 >= badarg)
self.assertRaises(TypeError, lambda: badarg <= t1)
self.assertRaises(TypeError, lambda: badarg < t1)
self.assertRaises(TypeError, lambda: badarg > t1)
self.assertRaises(TypeError, lambda: badarg >= t1)
def test_bad_constructor_arguments(self):
# bad hours
self.theclass(0, 0) # no exception
self.theclass(23, 0) # no exception
self.assertRaises(ValueError, self.theclass, -1, 0)
self.assertRaises(ValueError, self.theclass, 24, 0)
# bad minutes
self.theclass(23, 0) # no exception
self.theclass(23, 59) # no exception
self.assertRaises(ValueError, self.theclass, 23, -1)
self.assertRaises(ValueError, self.theclass, 23, 60)
# bad seconds
self.theclass(23, 59, 0) # no exception
self.theclass(23, 59, 59) # no exception
self.assertRaises(ValueError, self.theclass, 23, 59, -1)
self.assertRaises(ValueError, self.theclass, 23, 59, 60)
# bad microseconds
self.theclass(23, 59, 59, 0) # no exception
self.theclass(23, 59, 59, 999999) # no exception
self.assertRaises(ValueError, self.theclass, 23, 59, 59, -1)
self.assertRaises(ValueError, self.theclass, 23, 59, 59, 1000000)
def test_hash_equality(self):
d = self.theclass(23, 30, 17)
e = self.theclass(23, 30, 17)
self.assertEqual(d, e)
self.assertEqual(hash(d), hash(e))
dic = {d: 1}
dic[e] = 2
self.assertEqual(len(dic), 1)
self.assertEqual(dic[d], 2)
self.assertEqual(dic[e], 2)
d = self.theclass(0, 5, 17)
e = self.theclass(0, 5, 17)
self.assertEqual(d, e)
self.assertEqual(hash(d), hash(e))
dic = {d: 1}
dic[e] = 2
self.assertEqual(len(dic), 1)
self.assertEqual(dic[d], 2)
self.assertEqual(dic[e], 2)
def test_isoformat(self):
t = self.theclass(4, 5, 1, 123)
self.assertEqual(t.isoformat(), "04:05:01.000123")
self.assertEqual(t.isoformat(), str(t))
t = self.theclass()
self.assertEqual(t.isoformat(), "00:00:00")
self.assertEqual(t.isoformat(), str(t))
t = self.theclass(microsecond=1)
self.assertEqual(t.isoformat(), "00:00:00.000001")
self.assertEqual(t.isoformat(), str(t))
t = self.theclass(microsecond=10)
self.assertEqual(t.isoformat(), "00:00:00.000010")
self.assertEqual(t.isoformat(), str(t))
t = self.theclass(microsecond=100)
self.assertEqual(t.isoformat(), "00:00:00.000100")
self.assertEqual(t.isoformat(), str(t))
t = self.theclass(microsecond=1000)
self.assertEqual(t.isoformat(), "00:00:00.001000")
self.assertEqual(t.isoformat(), str(t))
t = self.theclass(microsecond=10000)
self.assertEqual(t.isoformat(), "00:00:00.010000")
self.assertEqual(t.isoformat(), str(t))
t = self.theclass(microsecond=100000)
self.assertEqual(t.isoformat(), "00:00:00.100000")
self.assertEqual(t.isoformat(), str(t))
t = self.theclass(hour=12, minute=34, second=56, microsecond=123456)
self.assertEqual(t.isoformat(timespec='hours'), "12")
self.assertEqual(t.isoformat(timespec='minutes'), "12:34")
self.assertEqual(t.isoformat(timespec='seconds'), "12:34:56")
self.assertEqual(t.isoformat(timespec='milliseconds'), "12:34:56.123")
self.assertEqual(t.isoformat(timespec='microseconds'), "12:34:56.123456")
self.assertEqual(t.isoformat(timespec='auto'), "12:34:56.123456")
self.assertRaises(ValueError, t.isoformat, timespec='monkey')
t = self.theclass(hour=12, minute=34, second=56, microsecond=999500)
self.assertEqual(t.isoformat(timespec='milliseconds'), "12:34:56.999")
t = self.theclass(hour=12, minute=34, second=56, microsecond=0)
self.assertEqual(t.isoformat(timespec='milliseconds'), "12:34:56.000")
self.assertEqual(t.isoformat(timespec='microseconds'), "12:34:56.000000")
self.assertEqual(t.isoformat(timespec='auto'), "12:34:56")
def test_1653736(self):
# verify it doesn't accept extra keyword arguments
t = self.theclass(second=1)
self.assertRaises(TypeError, t.isoformat, foo=3)
def test_strftime(self):
t = self.theclass(1, 2, 3, 4)
self.assertEqual(t.strftime('%H %M %S %f'), "01 02 03 000004")
# A naive object replaces %z and %Z with empty strings.
self.assertEqual(t.strftime("'%z' '%Z'"), "'' ''")
def test_format(self):
t = self.theclass(1, 2, 3, 4)
self.assertEqual(t.__format__(''), str(t))
with self.assertRaisesRegex(TypeError, 'must be str, not int'):
t.__format__(123)
# check that a derived class's __str__() gets called
class A(self.theclass):
def __str__(self):
return 'A'
a = A(1, 2, 3, 4)
self.assertEqual(a.__format__(''), 'A')
# check that a derived class's strftime gets called
class B(self.theclass):
def strftime(self, format_spec):
return 'B'
b = B(1, 2, 3, 4)
self.assertEqual(b.__format__(''), str(t))
for fmt in ['%H %M %S',
]:
self.assertEqual(t.__format__(fmt), t.strftime(fmt))
self.assertEqual(a.__format__(fmt), t.strftime(fmt))
self.assertEqual(b.__format__(fmt), 'B')
def test_str(self):
self.assertEqual(str(self.theclass(1, 2, 3, 4)), "01:02:03.000004")
self.assertEqual(str(self.theclass(10, 2, 3, 4000)), "10:02:03.004000")
self.assertEqual(str(self.theclass(0, 2, 3, 400000)), "00:02:03.400000")
self.assertEqual(str(self.theclass(12, 2, 3, 0)), "12:02:03")
self.assertEqual(str(self.theclass(23, 15, 0, 0)), "23:15:00")
def test_repr(self):
name = 'datetime.' + self.theclass.__name__
self.assertEqual(repr(self.theclass(1, 2, 3, 4)),
"%s(1, 2, 3, 4)" % name)
self.assertEqual(repr(self.theclass(10, 2, 3, 4000)),
"%s(10, 2, 3, 4000)" % name)
self.assertEqual(repr(self.theclass(0, 2, 3, 400000)),
"%s(0, 2, 3, 400000)" % name)
self.assertEqual(repr(self.theclass(12, 2, 3, 0)),
"%s(12, 2, 3)" % name)
self.assertEqual(repr(self.theclass(23, 15, 0, 0)),
"%s(23, 15)" % name)
def test_resolution_info(self):
self.assertIsInstance(self.theclass.min, self.theclass)
self.assertIsInstance(self.theclass.max, self.theclass)
self.assertIsInstance(self.theclass.resolution, timedelta)
self.assertTrue(self.theclass.max > self.theclass.min)
def test_pickling(self):
args = 20, 59, 16, 64**2
orig = self.theclass(*args)
for pickler, unpickler, proto in pickle_choices:
green = pickler.dumps(orig, proto)
derived = unpickler.loads(green)
self.assertEqual(orig, derived)
self.assertEqual(orig.__reduce__(), orig.__reduce_ex__(2))
def test_pickling_subclass_time(self):
args = 20, 59, 16, 64**2
orig = SubclassTime(*args)
for pickler, unpickler, proto in pickle_choices:
green = pickler.dumps(orig, proto)
derived = unpickler.loads(green)
self.assertEqual(orig, derived)
def test_bool(self):
# time is always True.
cls = self.theclass
self.assertTrue(cls(1))
self.assertTrue(cls(0, 1))
self.assertTrue(cls(0, 0, 1))
self.assertTrue(cls(0, 0, 0, 1))
self.assertTrue(cls(0))
self.assertTrue(cls())
def test_replace(self):
cls = self.theclass
args = [1, 2, 3, 4]
base = cls(*args)
self.assertEqual(base, base.replace())
i = 0
for name, newval in (("hour", 5),
("minute", 6),
("second", 7),
("microsecond", 8)):
newargs = args[:]
newargs[i] = newval
expected = cls(*newargs)
got = base.replace(**{name: newval})
self.assertEqual(expected, got)
i += 1
# Out of bounds.
base = cls(1)
self.assertRaises(ValueError, base.replace, hour=24)
self.assertRaises(ValueError, base.replace, minute=-1)
self.assertRaises(ValueError, base.replace, second=100)
self.assertRaises(ValueError, base.replace, microsecond=1000000)
def test_subclass_replace(self):
class TimeSubclass(self.theclass):
pass
ctime = TimeSubclass(12, 30)
self.assertIs(type(ctime.replace(hour=10)), TimeSubclass)
def test_subclass_time(self):
class C(self.theclass):
theAnswer = 42
def __new__(cls, *args, **kws):
temp = kws.copy()
extra = temp.pop('extra')
result = self.theclass.__new__(cls, *args, **temp)
result.extra = extra
return result
def newmeth(self, start):
return start + self.hour + self.second
args = 4, 5, 6
dt1 = self.theclass(*args)
dt2 = C(*args, **{'extra': 7})
self.assertEqual(dt2.__class__, C)
self.assertEqual(dt2.theAnswer, 42)
self.assertEqual(dt2.extra, 7)
self.assertEqual(dt1.isoformat(), dt2.isoformat())
self.assertEqual(dt2.newmeth(-7), dt1.hour + dt1.second - 7)
def test_backdoor_resistance(self):
# see TestDate.test_backdoor_resistance().
base = '2:59.0'
for hour_byte in ' ', '9', chr(24), '\xff':
self.assertRaises(TypeError, self.theclass,
hour_byte + base[1:])
# Good bytes, but bad tzinfo:
with self.assertRaisesRegex(TypeError, '^bad tzinfo state arg$'):
self.theclass(bytes([1] * len(base)), 'EST')
# A mixin for classes with a tzinfo= argument. Subclasses must define
# theclass as a class attribute, and theclass(1, 1, 1, tzinfo=whatever)
# must be legit (which is true for time and datetime).
class TZInfoBase:
def test_argument_passing(self):
cls = self.theclass
# A datetime passes itself on, a time passes None.
class introspective(tzinfo):
def tzname(self, dt): return dt and "real" or "none"
def utcoffset(self, dt):
return timedelta(minutes = dt and 42 or -42)
dst = utcoffset
obj = cls(1, 2, 3, tzinfo=introspective())
expected = cls is time and "none" or "real"
self.assertEqual(obj.tzname(), expected)
expected = timedelta(minutes=(cls is time and -42 or 42))
self.assertEqual(obj.utcoffset(), expected)
self.assertEqual(obj.dst(), expected)
def test_bad_tzinfo_classes(self):
cls = self.theclass
self.assertRaises(TypeError, cls, 1, 1, 1, tzinfo=12)
class NiceTry(object):
def __init__(self): pass
def utcoffset(self, dt): pass
self.assertRaises(TypeError, cls, 1, 1, 1, tzinfo=NiceTry)
class BetterTry(tzinfo):
def __init__(self): pass
def utcoffset(self, dt): pass
b = BetterTry()
t = cls(1, 1, 1, tzinfo=b)
self.assertIs(t.tzinfo, b)
def test_utc_offset_out_of_bounds(self):
class Edgy(tzinfo):
def __init__(self, offset):
self.offset = timedelta(minutes=offset)
def utcoffset(self, dt):
return self.offset
cls = self.theclass
for offset, legit in ((-1440, False),
(-1439, True),
(1439, True),
(1440, False)):
if cls is time:
t = cls(1, 2, 3, tzinfo=Edgy(offset))
elif cls is datetime:
t = cls(6, 6, 6, 1, 2, 3, tzinfo=Edgy(offset))
else:
assert 0, "impossible"
if legit:
aofs = abs(offset)
h, m = divmod(aofs, 60)
tag = "%c%02d:%02d" % (offset < 0 and '-' or '+', h, m)
if isinstance(t, datetime):
t = t.timetz()
self.assertEqual(str(t), "01:02:03" + tag)
else:
self.assertRaises(ValueError, str, t)
def test_tzinfo_classes(self):
cls = self.theclass
class C1(tzinfo):
def utcoffset(self, dt): return None
def dst(self, dt): return None
def tzname(self, dt): return None
for t in (cls(1, 1, 1),
cls(1, 1, 1, tzinfo=None),
cls(1, 1, 1, tzinfo=C1())):
self.assertIsNone(t.utcoffset())
self.assertIsNone(t.dst())
self.assertIsNone(t.tzname())
class C3(tzinfo):
def utcoffset(self, dt): return timedelta(minutes=-1439)
def dst(self, dt): return timedelta(minutes=1439)
def tzname(self, dt): return "aname"
t = cls(1, 1, 1, tzinfo=C3())
self.assertEqual(t.utcoffset(), timedelta(minutes=-1439))
self.assertEqual(t.dst(), timedelta(minutes=1439))
self.assertEqual(t.tzname(), "aname")
# Wrong types.
class C4(tzinfo):
def utcoffset(self, dt): return "aname"
def dst(self, dt): return 7
def tzname(self, dt): return 0
t = cls(1, 1, 1, tzinfo=C4())
self.assertRaises(TypeError, t.utcoffset)
self.assertRaises(TypeError, t.dst)
self.assertRaises(TypeError, t.tzname)
# Offset out of range.
class C6(tzinfo):
def utcoffset(self, dt): return timedelta(hours=-24)
def dst(self, dt): return timedelta(hours=24)
t = cls(1, 1, 1, tzinfo=C6())
self.assertRaises(ValueError, t.utcoffset)
self.assertRaises(ValueError, t.dst)
# Not a whole number of seconds.
class C7(tzinfo):
def utcoffset(self, dt): return timedelta(microseconds=61)
def dst(self, dt): return timedelta(microseconds=-81)
t = cls(1, 1, 1, tzinfo=C7())
self.assertRaises(ValueError, t.utcoffset)
self.assertRaises(ValueError, t.dst)
def test_aware_compare(self):
cls = self.theclass
# Ensure that utcoffset() gets ignored if the comparands have
# the same tzinfo member.
class OperandDependentOffset(tzinfo):
def utcoffset(self, t):
if t.minute < 10:
# d0 and d1 equal after adjustment
return timedelta(minutes=t.minute)
else:
# d2 off in the weeds
return timedelta(minutes=59)
base = cls(8, 9, 10, tzinfo=OperandDependentOffset())
d0 = base.replace(minute=3)
d1 = base.replace(minute=9)
d2 = base.replace(minute=11)
for x in d0, d1, d2:
for y in d0, d1, d2:
for op in lt, le, gt, ge, eq, ne:
got = op(x, y)
expected = op(x.minute, y.minute)
self.assertEqual(got, expected)
# However, if they're different members, uctoffset is not ignored.
# Note that a time can't actually have an operand-depedent offset,
# though (and time.utcoffset() passes None to tzinfo.utcoffset()),
# so skip this test for time.
if cls is not time:
d0 = base.replace(minute=3, tzinfo=OperandDependentOffset())
d1 = base.replace(minute=9, tzinfo=OperandDependentOffset())
d2 = base.replace(minute=11, tzinfo=OperandDependentOffset())
for x in d0, d1, d2:
for y in d0, d1, d2:
got = (x > y) - (x < y)
if (x is d0 or x is d1) and (y is d0 or y is d1):
expected = 0
elif x is y is d2:
expected = 0
elif x is d2:
expected = -1
else:
assert y is d2
expected = 1
self.assertEqual(got, expected)
# Testing time objects with a non-None tzinfo.
class TestTimeTZ(TestTime, TZInfoBase, unittest.TestCase):
theclass = time
def test_empty(self):
t = self.theclass()
self.assertEqual(t.hour, 0)
self.assertEqual(t.minute, 0)
self.assertEqual(t.second, 0)
self.assertEqual(t.microsecond, 0)
self.assertIsNone(t.tzinfo)
def test_zones(self):
est = FixedOffset(-300, "EST", 1)
utc = FixedOffset(0, "UTC", -2)
met = FixedOffset(60, "MET", 3)
t1 = time( 7, 47, tzinfo=est)
t2 = time(12, 47, tzinfo=utc)
t3 = time(13, 47, tzinfo=met)
t4 = time(microsecond=40)
t5 = time(microsecond=40, tzinfo=utc)
self.assertEqual(t1.tzinfo, est)
self.assertEqual(t2.tzinfo, utc)
self.assertEqual(t3.tzinfo, met)
self.assertIsNone(t4.tzinfo)
self.assertEqual(t5.tzinfo, utc)
self.assertEqual(t1.utcoffset(), timedelta(minutes=-300))
self.assertEqual(t2.utcoffset(), timedelta(minutes=0))
self.assertEqual(t3.utcoffset(), timedelta(minutes=60))
self.assertIsNone(t4.utcoffset())
self.assertRaises(TypeError, t1.utcoffset, "no args")
self.assertEqual(t1.tzname(), "EST")
self.assertEqual(t2.tzname(), "UTC")
self.assertEqual(t3.tzname(), "MET")
self.assertIsNone(t4.tzname())
self.assertRaises(TypeError, t1.tzname, "no args")
self.assertEqual(t1.dst(), timedelta(minutes=1))
self.assertEqual(t2.dst(), timedelta(minutes=-2))
self.assertEqual(t3.dst(), timedelta(minutes=3))
self.assertIsNone(t4.dst())
self.assertRaises(TypeError, t1.dst, "no args")
self.assertEqual(hash(t1), hash(t2))
self.assertEqual(hash(t1), hash(t3))
self.assertEqual(hash(t2), hash(t3))
self.assertEqual(t1, t2)
self.assertEqual(t1, t3)
self.assertEqual(t2, t3)
self.assertNotEqual(t4, t5) # mixed tz-aware & naive
self.assertRaises(TypeError, lambda: t4 < t5) # mixed tz-aware & naive
self.assertRaises(TypeError, lambda: t5 < t4) # mixed tz-aware & naive
self.assertEqual(str(t1), "07:47:00-05:00")
self.assertEqual(str(t2), "12:47:00+00:00")
self.assertEqual(str(t3), "13:47:00+01:00")
self.assertEqual(str(t4), "00:00:00.000040")
self.assertEqual(str(t5), "00:00:00.000040+00:00")
self.assertEqual(t1.isoformat(), "07:47:00-05:00")
self.assertEqual(t2.isoformat(), "12:47:00+00:00")
self.assertEqual(t3.isoformat(), "13:47:00+01:00")
self.assertEqual(t4.isoformat(), "00:00:00.000040")
self.assertEqual(t5.isoformat(), "00:00:00.000040+00:00")
d = 'datetime.time'
self.assertEqual(repr(t1), d + "(7, 47, tzinfo=est)")
self.assertEqual(repr(t2), d + "(12, 47, tzinfo=utc)")
self.assertEqual(repr(t3), d + "(13, 47, tzinfo=met)")
self.assertEqual(repr(t4), d + "(0, 0, 0, 40)")
self.assertEqual(repr(t5), d + "(0, 0, 0, 40, tzinfo=utc)")
self.assertEqual(t1.strftime("%H:%M:%S %%Z=%Z %%z=%z"),
"07:47:00 %Z=EST %z=-0500")
self.assertEqual(t2.strftime("%H:%M:%S %Z %z"), "12:47:00 UTC +0000")
self.assertEqual(t3.strftime("%H:%M:%S %Z %z"), "13:47:00 MET +0100")
yuck = FixedOffset(-1439, "%z %Z %%z%%Z")
t1 = time(23, 59, tzinfo=yuck)
self.assertEqual(t1.strftime("%H:%M %%Z='%Z' %%z='%z'"),
"23:59 %Z='%z %Z %%z%%Z' %z='-2359'")
# Check that an invalid tzname result raises an exception.
class Badtzname(tzinfo):
tz = 42
def tzname(self, dt): return self.tz
t = time(2, 3, 4, tzinfo=Badtzname())
self.assertEqual(t.strftime("%H:%M:%S"), "02:03:04")
self.assertRaises(TypeError, t.strftime, "%Z")
# Issue #6697:
if '_Fast' in self.__class__.__name__:
Badtzname.tz = '\ud800'
self.assertRaises(ValueError, t.strftime, "%Z")
def test_hash_edge_cases(self):
# Offsets that overflow a basic time.
t1 = self.theclass(0, 1, 2, 3, tzinfo=FixedOffset(1439, ""))
t2 = self.theclass(0, 0, 2, 3, tzinfo=FixedOffset(1438, ""))
self.assertEqual(hash(t1), hash(t2))
t1 = self.theclass(23, 58, 6, 100, tzinfo=FixedOffset(-1000, ""))
t2 = self.theclass(23, 48, 6, 100, tzinfo=FixedOffset(-1010, ""))
self.assertEqual(hash(t1), hash(t2))
def test_pickling(self):
# Try one without a tzinfo.
args = 20, 59, 16, 64**2
orig = self.theclass(*args)
for pickler, unpickler, proto in pickle_choices:
green = pickler.dumps(orig, proto)
derived = unpickler.loads(green)
self.assertEqual(orig, derived)
self.assertEqual(orig.__reduce__(), orig.__reduce_ex__(2))
# Try one with a tzinfo.
tinfo = PicklableFixedOffset(-300, 'cookie')
orig = self.theclass(5, 6, 7, tzinfo=tinfo)
for pickler, unpickler, proto in pickle_choices:
green = pickler.dumps(orig, proto)
derived = unpickler.loads(green)
self.assertEqual(orig, derived)
self.assertIsInstance(derived.tzinfo, PicklableFixedOffset)
self.assertEqual(derived.utcoffset(), timedelta(minutes=-300))
self.assertEqual(derived.tzname(), 'cookie')
self.assertEqual(orig.__reduce__(), orig.__reduce_ex__(2))
def test_more_bool(self):
# time is always True.
cls = self.theclass
t = cls(0, tzinfo=FixedOffset(-300, ""))
self.assertTrue(t)
t = cls(5, tzinfo=FixedOffset(-300, ""))
self.assertTrue(t)
t = cls(5, tzinfo=FixedOffset(300, ""))
self.assertTrue(t)
t = cls(23, 59, tzinfo=FixedOffset(23*60 + 59, ""))
self.assertTrue(t)
def test_replace(self):
cls = self.theclass
z100 = FixedOffset(100, "+100")
zm200 = FixedOffset(timedelta(minutes=-200), "-200")
args = [1, 2, 3, 4, z100]
base = cls(*args)
self.assertEqual(base, base.replace())
i = 0
for name, newval in (("hour", 5),
("minute", 6),
("second", 7),
("microsecond", 8),
("tzinfo", zm200)):
newargs = args[:]
newargs[i] = newval
expected = cls(*newargs)
got = base.replace(**{name: newval})
self.assertEqual(expected, got)
i += 1
# Ensure we can get rid of a tzinfo.
self.assertEqual(base.tzname(), "+100")
base2 = base.replace(tzinfo=None)
self.assertIsNone(base2.tzinfo)
self.assertIsNone(base2.tzname())
# Ensure we can add one.
base3 = base2.replace(tzinfo=z100)
self.assertEqual(base, base3)
self.assertIs(base.tzinfo, base3.tzinfo)
# Out of bounds.
base = cls(1)
self.assertRaises(ValueError, base.replace, hour=24)
self.assertRaises(ValueError, base.replace, minute=-1)
self.assertRaises(ValueError, base.replace, second=100)
self.assertRaises(ValueError, base.replace, microsecond=1000000)
def test_mixed_compare(self):
t1 = time(1, 2, 3)
t2 = time(1, 2, 3)
self.assertEqual(t1, t2)
t2 = t2.replace(tzinfo=None)
self.assertEqual(t1, t2)
t2 = t2.replace(tzinfo=FixedOffset(None, ""))
self.assertEqual(t1, t2)
t2 = t2.replace(tzinfo=FixedOffset(0, ""))
self.assertNotEqual(t1, t2)
# In time w/ identical tzinfo objects, utcoffset is ignored.
class Varies(tzinfo):
def __init__(self):
self.offset = timedelta(minutes=22)
def utcoffset(self, t):
self.offset += timedelta(minutes=1)
return self.offset
v = Varies()
t1 = t2.replace(tzinfo=v)
t2 = t2.replace(tzinfo=v)
self.assertEqual(t1.utcoffset(), timedelta(minutes=23))
self.assertEqual(t2.utcoffset(), timedelta(minutes=24))
self.assertEqual(t1, t2)
# But if they're not identical, it isn't ignored.
t2 = t2.replace(tzinfo=Varies())
self.assertTrue(t1 < t2) # t1's offset counter still going up
def test_subclass_timetz(self):
class C(self.theclass):
theAnswer = 42
def __new__(cls, *args, **kws):
temp = kws.copy()
extra = temp.pop('extra')
result = self.theclass.__new__(cls, *args, **temp)
result.extra = extra
return result
def newmeth(self, start):
return start + self.hour + self.second
args = 4, 5, 6, 500, FixedOffset(-300, "EST", 1)
dt1 = self.theclass(*args)
dt2 = C(*args, **{'extra': 7})
self.assertEqual(dt2.__class__, C)
self.assertEqual(dt2.theAnswer, 42)
self.assertEqual(dt2.extra, 7)
self.assertEqual(dt1.utcoffset(), dt2.utcoffset())
self.assertEqual(dt2.newmeth(-7), dt1.hour + dt1.second - 7)
# Testing datetime objects with a non-None tzinfo.
class TestDateTimeTZ(TestDateTime, TZInfoBase, unittest.TestCase):
theclass = datetime
def test_trivial(self):
dt = self.theclass(1, 2, 3, 4, 5, 6, 7)
self.assertEqual(dt.year, 1)
self.assertEqual(dt.month, 2)
self.assertEqual(dt.day, 3)
self.assertEqual(dt.hour, 4)
self.assertEqual(dt.minute, 5)
self.assertEqual(dt.second, 6)
self.assertEqual(dt.microsecond, 7)
self.assertEqual(dt.tzinfo, None)
def test_even_more_compare(self):
# The test_compare() and test_more_compare() inherited from TestDate
# and TestDateTime covered non-tzinfo cases.
# Smallest possible after UTC adjustment.
t1 = self.theclass(1, 1, 1, tzinfo=FixedOffset(1439, ""))
# Largest possible after UTC adjustment.
t2 = self.theclass(MAXYEAR, 12, 31, 23, 59, 59, 999999,
tzinfo=FixedOffset(-1439, ""))
# Make sure those compare correctly, and w/o overflow.
self.assertTrue(t1 < t2)
self.assertTrue(t1 != t2)
self.assertTrue(t2 > t1)
self.assertEqual(t1, t1)
self.assertEqual(t2, t2)
# Equal afer adjustment.
t1 = self.theclass(1, 12, 31, 23, 59, tzinfo=FixedOffset(1, ""))
t2 = self.theclass(2, 1, 1, 3, 13, tzinfo=FixedOffset(3*60+13+2, ""))
self.assertEqual(t1, t2)
# Change t1 not to subtract a minute, and t1 should be larger.
t1 = self.theclass(1, 12, 31, 23, 59, tzinfo=FixedOffset(0, ""))
self.assertTrue(t1 > t2)
# Change t1 to subtract 2 minutes, and t1 should be smaller.
t1 = self.theclass(1, 12, 31, 23, 59, tzinfo=FixedOffset(2, ""))
self.assertTrue(t1 < t2)
# Back to the original t1, but make seconds resolve it.
t1 = self.theclass(1, 12, 31, 23, 59, tzinfo=FixedOffset(1, ""),
second=1)
self.assertTrue(t1 > t2)
# Likewise, but make microseconds resolve it.
t1 = self.theclass(1, 12, 31, 23, 59, tzinfo=FixedOffset(1, ""),
microsecond=1)
self.assertTrue(t1 > t2)
# Make t2 naive and it should differ.
t2 = self.theclass.min
self.assertNotEqual(t1, t2)
self.assertEqual(t2, t2)
# It's also naive if it has tzinfo but tzinfo.utcoffset() is None.
class Naive(tzinfo):
def utcoffset(self, dt): return None
t2 = self.theclass(5, 6, 7, tzinfo=Naive())
self.assertNotEqual(t1, t2)
self.assertEqual(t2, t2)
# OTOH, it's OK to compare two of these mixing the two ways of being
# naive.
t1 = self.theclass(5, 6, 7)
self.assertEqual(t1, t2)
# Try a bogus uctoffset.
class Bogus(tzinfo):
def utcoffset(self, dt):
return timedelta(minutes=1440) # out of bounds
t1 = self.theclass(2, 2, 2, tzinfo=Bogus())
t2 = self.theclass(2, 2, 2, tzinfo=FixedOffset(0, ""))
self.assertRaises(ValueError, lambda: t1 == t2)
def test_pickling(self):
# Try one without a tzinfo.
args = 6, 7, 23, 20, 59, 1, 64**2
orig = self.theclass(*args)
for pickler, unpickler, proto in pickle_choices:
green = pickler.dumps(orig, proto)
derived = unpickler.loads(green)
self.assertEqual(orig, derived)
self.assertEqual(orig.__reduce__(), orig.__reduce_ex__(2))
# Try one with a tzinfo.
tinfo = PicklableFixedOffset(-300, 'cookie')
orig = self.theclass(*args, **{'tzinfo': tinfo})
derived = self.theclass(1, 1, 1, tzinfo=FixedOffset(0, "", 0))
for pickler, unpickler, proto in pickle_choices:
green = pickler.dumps(orig, proto)
derived = unpickler.loads(green)
self.assertEqual(orig, derived)
self.assertIsInstance(derived.tzinfo, PicklableFixedOffset)
self.assertEqual(derived.utcoffset(), timedelta(minutes=-300))
self.assertEqual(derived.tzname(), 'cookie')
self.assertEqual(orig.__reduce__(), orig.__reduce_ex__(2))
def test_extreme_hashes(self):
# If an attempt is made to hash these via subtracting the offset
# then hashing a datetime object, OverflowError results. The
# Python implementation used to blow up here.
t = self.theclass(1, 1, 1, tzinfo=FixedOffset(1439, ""))
hash(t)
t = self.theclass(MAXYEAR, 12, 31, 23, 59, 59, 999999,
tzinfo=FixedOffset(-1439, ""))
hash(t)
# OTOH, an OOB offset should blow up.
t = self.theclass(5, 5, 5, tzinfo=FixedOffset(-1440, ""))
self.assertRaises(ValueError, hash, t)
def test_zones(self):
est = FixedOffset(-300, "EST")
utc = FixedOffset(0, "UTC")
met = FixedOffset(60, "MET")
t1 = datetime(2002, 3, 19, 7, 47, tzinfo=est)
t2 = datetime(2002, 3, 19, 12, 47, tzinfo=utc)
t3 = datetime(2002, 3, 19, 13, 47, tzinfo=met)
self.assertEqual(t1.tzinfo, est)
self.assertEqual(t2.tzinfo, utc)
self.assertEqual(t3.tzinfo, met)
self.assertEqual(t1.utcoffset(), timedelta(minutes=-300))
self.assertEqual(t2.utcoffset(), timedelta(minutes=0))
self.assertEqual(t3.utcoffset(), timedelta(minutes=60))
self.assertEqual(t1.tzname(), "EST")
self.assertEqual(t2.tzname(), "UTC")
self.assertEqual(t3.tzname(), "MET")
self.assertEqual(hash(t1), hash(t2))
self.assertEqual(hash(t1), hash(t3))
self.assertEqual(hash(t2), hash(t3))
self.assertEqual(t1, t2)
self.assertEqual(t1, t3)
self.assertEqual(t2, t3)
self.assertEqual(str(t1), "2002-03-19 07:47:00-05:00")
self.assertEqual(str(t2), "2002-03-19 12:47:00+00:00")
self.assertEqual(str(t3), "2002-03-19 13:47:00+01:00")
d = 'datetime.datetime(2002, 3, 19, '
self.assertEqual(repr(t1), d + "7, 47, tzinfo=est)")
self.assertEqual(repr(t2), d + "12, 47, tzinfo=utc)")
self.assertEqual(repr(t3), d + "13, 47, tzinfo=met)")
def test_combine(self):
met = FixedOffset(60, "MET")
d = date(2002, 3, 4)
tz = time(18, 45, 3, 1234, tzinfo=met)
dt = datetime.combine(d, tz)
self.assertEqual(dt, datetime(2002, 3, 4, 18, 45, 3, 1234,
tzinfo=met))
def test_extract(self):
met = FixedOffset(60, "MET")
dt = self.theclass(2002, 3, 4, 18, 45, 3, 1234, tzinfo=met)
self.assertEqual(dt.date(), date(2002, 3, 4))
self.assertEqual(dt.time(), time(18, 45, 3, 1234))
self.assertEqual(dt.timetz(), time(18, 45, 3, 1234, tzinfo=met))
def test_tz_aware_arithmetic(self):
import random
now = self.theclass.now()
tz55 = FixedOffset(-330, "west 5:30")
timeaware = now.time().replace(tzinfo=tz55)
nowaware = self.theclass.combine(now.date(), timeaware)
self.assertIs(nowaware.tzinfo, tz55)
self.assertEqual(nowaware.timetz(), timeaware)
# Can't mix aware and non-aware.
self.assertRaises(TypeError, lambda: now - nowaware)
self.assertRaises(TypeError, lambda: nowaware - now)
# And adding datetime's doesn't make sense, aware or not.
self.assertRaises(TypeError, lambda: now + nowaware)
self.assertRaises(TypeError, lambda: nowaware + now)
self.assertRaises(TypeError, lambda: nowaware + nowaware)
# Subtracting should yield 0.
self.assertEqual(now - now, timedelta(0))
self.assertEqual(nowaware - nowaware, timedelta(0))
# Adding a delta should preserve tzinfo.
delta = timedelta(weeks=1, minutes=12, microseconds=5678)
nowawareplus = nowaware + delta
self.assertIs(nowaware.tzinfo, tz55)
nowawareplus2 = delta + nowaware
self.assertIs(nowawareplus2.tzinfo, tz55)
self.assertEqual(nowawareplus, nowawareplus2)
# that - delta should be what we started with, and that - what we
# started with should be delta.
diff = nowawareplus - delta
self.assertIs(diff.tzinfo, tz55)
self.assertEqual(nowaware, diff)
self.assertRaises(TypeError, lambda: delta - nowawareplus)
self.assertEqual(nowawareplus - nowaware, delta)
# Make up a random timezone.
tzr = FixedOffset(random.randrange(-1439, 1440), "randomtimezone")
# Attach it to nowawareplus.
nowawareplus = nowawareplus.replace(tzinfo=tzr)
self.assertIs(nowawareplus.tzinfo, tzr)
# Make sure the difference takes the timezone adjustments into account.
got = nowaware - nowawareplus
# Expected: (nowaware base - nowaware offset) -
# (nowawareplus base - nowawareplus offset) =
# (nowaware base - nowawareplus base) +
# (nowawareplus offset - nowaware offset) =
# -delta + nowawareplus offset - nowaware offset
expected = nowawareplus.utcoffset() - nowaware.utcoffset() - delta
self.assertEqual(got, expected)
# Try max possible difference.
min = self.theclass(1, 1, 1, tzinfo=FixedOffset(1439, "min"))
max = self.theclass(MAXYEAR, 12, 31, 23, 59, 59, 999999,
tzinfo=FixedOffset(-1439, "max"))
maxdiff = max - min
self.assertEqual(maxdiff, self.theclass.max - self.theclass.min +
timedelta(minutes=2*1439))
# Different tzinfo, but the same offset
tza = timezone(HOUR, 'A')
tzb = timezone(HOUR, 'B')
delta = min.replace(tzinfo=tza) - max.replace(tzinfo=tzb)
self.assertEqual(delta, self.theclass.min - self.theclass.max)
def test_tzinfo_now(self):
meth = self.theclass.now
# Ensure it doesn't require tzinfo (i.e., that this doesn't blow up).
base = meth()
# Try with and without naming the keyword.
off42 = FixedOffset(42, "42")
another = meth(off42)
again = meth(tz=off42)
self.assertIs(another.tzinfo, again.tzinfo)
self.assertEqual(another.utcoffset(), timedelta(minutes=42))
# Bad argument with and w/o naming the keyword.
self.assertRaises(TypeError, meth, 16)
self.assertRaises(TypeError, meth, tzinfo=16)
# Bad keyword name.
self.assertRaises(TypeError, meth, tinfo=off42)
# Too many args.
self.assertRaises(TypeError, meth, off42, off42)
# We don't know which time zone we're in, and don't have a tzinfo
# class to represent it, so seeing whether a tz argument actually
# does a conversion is tricky.
utc = FixedOffset(0, "utc", 0)
for weirdtz in [FixedOffset(timedelta(hours=15, minutes=58), "weirdtz", 0),
timezone(timedelta(hours=15, minutes=58), "weirdtz"),]:
for dummy in range(3):
now = datetime.now(weirdtz)
self.assertIs(now.tzinfo, weirdtz)
utcnow = datetime.utcnow().replace(tzinfo=utc)
now2 = utcnow.astimezone(weirdtz)
if abs(now - now2) < timedelta(seconds=30):
break
# Else the code is broken, or more than 30 seconds passed between
# calls; assuming the latter, just try again.
else:
# Three strikes and we're out.
self.fail("utcnow(), now(tz), or astimezone() may be broken")
def test_tzinfo_fromtimestamp(self):
import time
meth = self.theclass.fromtimestamp
ts = time.time()
# Ensure it doesn't require tzinfo (i.e., that this doesn't blow up).
base = meth(ts)
# Try with and without naming the keyword.
off42 = FixedOffset(42, "42")
another = meth(ts, off42)
again = meth(ts, tz=off42)
self.assertIs(another.tzinfo, again.tzinfo)
self.assertEqual(another.utcoffset(), timedelta(minutes=42))
# Bad argument with and w/o naming the keyword.
self.assertRaises(TypeError, meth, ts, 16)
self.assertRaises(TypeError, meth, ts, tzinfo=16)
# Bad keyword name.
self.assertRaises(TypeError, meth, ts, tinfo=off42)
# Too many args.
self.assertRaises(TypeError, meth, ts, off42, off42)
# Too few args.
self.assertRaises(TypeError, meth)
# Try to make sure tz= actually does some conversion.
timestamp = 1000000000
utcdatetime = datetime.utcfromtimestamp(timestamp)
# In POSIX (epoch 1970), that's 2001-09-09 01:46:40 UTC, give or take.
# But on some flavor of Mac, it's nowhere near that. So we can't have
# any idea here what time that actually is, we can only test that
# relative changes match.
utcoffset = timedelta(hours=-15, minutes=39) # arbitrary, but not zero
tz = FixedOffset(utcoffset, "tz", 0)
expected = utcdatetime + utcoffset
got = datetime.fromtimestamp(timestamp, tz)
self.assertEqual(expected, got.replace(tzinfo=None))
def test_tzinfo_utcnow(self):
meth = self.theclass.utcnow
# Ensure it doesn't require tzinfo (i.e., that this doesn't blow up).
base = meth()
# Try with and without naming the keyword; for whatever reason,
# utcnow() doesn't accept a tzinfo argument.
off42 = FixedOffset(42, "42")
self.assertRaises(TypeError, meth, off42)
self.assertRaises(TypeError, meth, tzinfo=off42)
def test_tzinfo_utcfromtimestamp(self):
import time
meth = self.theclass.utcfromtimestamp
ts = time.time()
# Ensure it doesn't require tzinfo (i.e., that this doesn't blow up).
base = meth(ts)
# Try with and without naming the keyword; for whatever reason,
# utcfromtimestamp() doesn't accept a tzinfo argument.
off42 = FixedOffset(42, "42")
self.assertRaises(TypeError, meth, ts, off42)
self.assertRaises(TypeError, meth, ts, tzinfo=off42)
def test_tzinfo_timetuple(self):
# TestDateTime tested most of this. datetime adds a twist to the
# DST flag.
class DST(tzinfo):
def __init__(self, dstvalue):
if isinstance(dstvalue, int):
dstvalue = timedelta(minutes=dstvalue)
self.dstvalue = dstvalue
def dst(self, dt):
return self.dstvalue
cls = self.theclass
for dstvalue, flag in (-33, 1), (33, 1), (0, 0), (None, -1):
d = cls(1, 1, 1, 10, 20, 30, 40, tzinfo=DST(dstvalue))
t = d.timetuple()
self.assertEqual(1, t.tm_year)
self.assertEqual(1, t.tm_mon)
self.assertEqual(1, t.tm_mday)
self.assertEqual(10, t.tm_hour)
self.assertEqual(20, t.tm_min)
self.assertEqual(30, t.tm_sec)
self.assertEqual(0, t.tm_wday)
self.assertEqual(1, t.tm_yday)
self.assertEqual(flag, t.tm_isdst)
# dst() returns wrong type.
self.assertRaises(TypeError, cls(1, 1, 1, tzinfo=DST("x")).timetuple)
# dst() at the edge.
self.assertEqual(cls(1,1,1, tzinfo=DST(1439)).timetuple().tm_isdst, 1)
self.assertEqual(cls(1,1,1, tzinfo=DST(-1439)).timetuple().tm_isdst, 1)
# dst() out of range.
self.assertRaises(ValueError, cls(1,1,1, tzinfo=DST(1440)).timetuple)
self.assertRaises(ValueError, cls(1,1,1, tzinfo=DST(-1440)).timetuple)
def test_utctimetuple(self):
class DST(tzinfo):
def __init__(self, dstvalue=0):
if isinstance(dstvalue, int):
dstvalue = timedelta(minutes=dstvalue)
self.dstvalue = dstvalue
def dst(self, dt):
return self.dstvalue
cls = self.theclass
# This can't work: DST didn't implement utcoffset.
self.assertRaises(NotImplementedError,
cls(1, 1, 1, tzinfo=DST(0)).utcoffset)
class UOFS(DST):
def __init__(self, uofs, dofs=None):
DST.__init__(self, dofs)
self.uofs = timedelta(minutes=uofs)
def utcoffset(self, dt):
return self.uofs
for dstvalue in -33, 33, 0, None:
d = cls(1, 2, 3, 10, 20, 30, 40, tzinfo=UOFS(-53, dstvalue))
t = d.utctimetuple()
self.assertEqual(d.year, t.tm_year)
self.assertEqual(d.month, t.tm_mon)
self.assertEqual(d.day, t.tm_mday)
self.assertEqual(11, t.tm_hour) # 20mm + 53mm = 1hn + 13mm
self.assertEqual(13, t.tm_min)
self.assertEqual(d.second, t.tm_sec)
self.assertEqual(d.weekday(), t.tm_wday)
self.assertEqual(d.toordinal() - date(1, 1, 1).toordinal() + 1,
t.tm_yday)
# Ensure tm_isdst is 0 regardless of what dst() says: DST
# is never in effect for a UTC time.
self.assertEqual(0, t.tm_isdst)
# For naive datetime, utctimetuple == timetuple except for isdst
d = cls(1, 2, 3, 10, 20, 30, 40)
t = d.utctimetuple()
self.assertEqual(t[:-1], d.timetuple()[:-1])
self.assertEqual(0, t.tm_isdst)
# Same if utcoffset is None
class NOFS(DST):
def utcoffset(self, dt):
return None
d = cls(1, 2, 3, 10, 20, 30, 40, tzinfo=NOFS())
t = d.utctimetuple()
self.assertEqual(t[:-1], d.timetuple()[:-1])
self.assertEqual(0, t.tm_isdst)
# Check that bad tzinfo is detected
class BOFS(DST):
def utcoffset(self, dt):
return "EST"
d = cls(1, 2, 3, 10, 20, 30, 40, tzinfo=BOFS())
self.assertRaises(TypeError, d.utctimetuple)
# Check that utctimetuple() is the same as
# astimezone(utc).timetuple()
d = cls(2010, 11, 13, 14, 15, 16, 171819)
for tz in [timezone.min, timezone.utc, timezone.max]:
dtz = d.replace(tzinfo=tz)
self.assertEqual(dtz.utctimetuple()[:-1],
dtz.astimezone(timezone.utc).timetuple()[:-1])
# At the edges, UTC adjustment can produce years out-of-range
# for a datetime object. Ensure that an OverflowError is
# raised.
tiny = cls(MINYEAR, 1, 1, 0, 0, 37, tzinfo=UOFS(1439))
# That goes back 1 minute less than a full day.
self.assertRaises(OverflowError, tiny.utctimetuple)
huge = cls(MAXYEAR, 12, 31, 23, 59, 37, 999999, tzinfo=UOFS(-1439))
# That goes forward 1 minute less than a full day.
self.assertRaises(OverflowError, huge.utctimetuple)
# More overflow cases
tiny = cls.min.replace(tzinfo=timezone(MINUTE))
self.assertRaises(OverflowError, tiny.utctimetuple)
huge = cls.max.replace(tzinfo=timezone(-MINUTE))
self.assertRaises(OverflowError, huge.utctimetuple)
def test_tzinfo_isoformat(self):
zero = FixedOffset(0, "+00:00")
plus = FixedOffset(220, "+03:40")
minus = FixedOffset(-231, "-03:51")
unknown = FixedOffset(None, "")
cls = self.theclass
datestr = '0001-02-03'
for ofs in None, zero, plus, minus, unknown:
for us in 0, 987001:
d = cls(1, 2, 3, 4, 5, 59, us, tzinfo=ofs)
timestr = '04:05:59' + (us and '.987001' or '')
ofsstr = ofs is not None and d.tzname() or ''
tailstr = timestr + ofsstr
iso = d.isoformat()
self.assertEqual(iso, datestr + 'T' + tailstr)
self.assertEqual(iso, d.isoformat('T'))
self.assertEqual(d.isoformat('k'), datestr + 'k' + tailstr)
self.assertEqual(d.isoformat('\u1234'), datestr + '\u1234' + tailstr)
self.assertEqual(str(d), datestr + ' ' + tailstr)
def test_replace(self):
cls = self.theclass
z100 = FixedOffset(100, "+100")
zm200 = FixedOffset(timedelta(minutes=-200), "-200")
args = [1, 2, 3, 4, 5, 6, 7, z100]
base = cls(*args)
self.assertEqual(base, base.replace())
i = 0
for name, newval in (("year", 2),
("month", 3),
("day", 4),
("hour", 5),
("minute", 6),
("second", 7),
("microsecond", 8),
("tzinfo", zm200)):
newargs = args[:]
newargs[i] = newval
expected = cls(*newargs)
got = base.replace(**{name: newval})
self.assertEqual(expected, got)
i += 1
# Ensure we can get rid of a tzinfo.
self.assertEqual(base.tzname(), "+100")
base2 = base.replace(tzinfo=None)
self.assertIsNone(base2.tzinfo)
self.assertIsNone(base2.tzname())
# Ensure we can add one.
base3 = base2.replace(tzinfo=z100)
self.assertEqual(base, base3)
self.assertIs(base.tzinfo, base3.tzinfo)
# Out of bounds.
base = cls(2000, 2, 29)
self.assertRaises(ValueError, base.replace, year=2001)
def test_more_astimezone(self):
# The inherited test_astimezone covered some trivial and error cases.
fnone = FixedOffset(None, "None")
f44m = FixedOffset(44, "44")
fm5h = FixedOffset(-timedelta(hours=5), "m300")
dt = self.theclass.now(tz=f44m)
self.assertIs(dt.tzinfo, f44m)
# Replacing with degenerate tzinfo raises an exception.
self.assertRaises(ValueError, dt.astimezone, fnone)
# Replacing with same tzinfo makes no change.
x = dt.astimezone(dt.tzinfo)
self.assertIs(x.tzinfo, f44m)
self.assertEqual(x.date(), dt.date())
self.assertEqual(x.time(), dt.time())
# Replacing with different tzinfo does adjust.
got = dt.astimezone(fm5h)
self.assertIs(got.tzinfo, fm5h)
self.assertEqual(got.utcoffset(), timedelta(hours=-5))
expected = dt - dt.utcoffset() # in effect, convert to UTC
expected += fm5h.utcoffset(dt) # and from there to local time
expected = expected.replace(tzinfo=fm5h) # and attach new tzinfo
self.assertEqual(got.date(), expected.date())
self.assertEqual(got.time(), expected.time())
self.assertEqual(got.timetz(), expected.timetz())
self.assertIs(got.tzinfo, expected.tzinfo)
self.assertEqual(got, expected)
@support.run_with_tz('UTC')
def test_astimezone_default_utc(self):
dt = self.theclass.now(timezone.utc)
self.assertEqual(dt.astimezone(None), dt)
self.assertEqual(dt.astimezone(), dt)
# Note that offset in TZ variable has the opposite sign to that
# produced by %z directive.
@support.run_with_tz('EST+05EDT,M3.2.0,M11.1.0')
def test_astimezone_default_eastern(self):
dt = self.theclass(2012, 11, 4, 6, 30, tzinfo=timezone.utc)
local = dt.astimezone()
self.assertEqual(dt, local)
self.assertEqual(local.strftime("%z %Z"), "-0500 EST")
dt = self.theclass(2012, 11, 4, 5, 30, tzinfo=timezone.utc)
local = dt.astimezone()
self.assertEqual(dt, local)
self.assertEqual(local.strftime("%z %Z"), "-0400 EDT")
@support.run_with_tz('EST+05EDT,M3.2.0,M11.1.0')
def test_astimezone_default_near_fold(self):
# Issue #26616.
u = datetime(2015, 11, 1, 5, tzinfo=timezone.utc)
t = u.astimezone()
s = t.astimezone()
self.assertEqual(t.tzinfo, s.tzinfo)
def test_aware_subtract(self):
cls = self.theclass
# Ensure that utcoffset() is ignored when the operands have the
# same tzinfo member.
class OperandDependentOffset(tzinfo):
def utcoffset(self, t):
if t.minute < 10:
# d0 and d1 equal after adjustment
return timedelta(minutes=t.minute)
else:
# d2 off in the weeds
return timedelta(minutes=59)
base = cls(8, 9, 10, 11, 12, 13, 14, tzinfo=OperandDependentOffset())
d0 = base.replace(minute=3)
d1 = base.replace(minute=9)
d2 = base.replace(minute=11)
for x in d0, d1, d2:
for y in d0, d1, d2:
got = x - y
expected = timedelta(minutes=x.minute - y.minute)
self.assertEqual(got, expected)
# OTOH, if the tzinfo members are distinct, utcoffsets aren't
# ignored.
base = cls(8, 9, 10, 11, 12, 13, 14)
d0 = base.replace(minute=3, tzinfo=OperandDependentOffset())
d1 = base.replace(minute=9, tzinfo=OperandDependentOffset())
d2 = base.replace(minute=11, tzinfo=OperandDependentOffset())
for x in d0, d1, d2:
for y in d0, d1, d2:
got = x - y
if (x is d0 or x is d1) and (y is d0 or y is d1):
expected = timedelta(0)
elif x is y is d2:
expected = timedelta(0)
elif x is d2:
expected = timedelta(minutes=(11-59)-0)
else:
assert y is d2
expected = timedelta(minutes=0-(11-59))
self.assertEqual(got, expected)
def test_mixed_compare(self):
t1 = datetime(1, 2, 3, 4, 5, 6, 7)
t2 = datetime(1, 2, 3, 4, 5, 6, 7)
self.assertEqual(t1, t2)
t2 = t2.replace(tzinfo=None)
self.assertEqual(t1, t2)
t2 = t2.replace(tzinfo=FixedOffset(None, ""))
self.assertEqual(t1, t2)
t2 = t2.replace(tzinfo=FixedOffset(0, ""))
self.assertNotEqual(t1, t2)
# In datetime w/ identical tzinfo objects, utcoffset is ignored.
class Varies(tzinfo):
def __init__(self):
self.offset = timedelta(minutes=22)
def utcoffset(self, t):
self.offset += timedelta(minutes=1)
return self.offset
v = Varies()
t1 = t2.replace(tzinfo=v)
t2 = t2.replace(tzinfo=v)
self.assertEqual(t1.utcoffset(), timedelta(minutes=23))
self.assertEqual(t2.utcoffset(), timedelta(minutes=24))
self.assertEqual(t1, t2)
# But if they're not identical, it isn't ignored.
t2 = t2.replace(tzinfo=Varies())
self.assertTrue(t1 < t2) # t1's offset counter still going up
def test_subclass_datetimetz(self):
class C(self.theclass):
theAnswer = 42
def __new__(cls, *args, **kws):
temp = kws.copy()
extra = temp.pop('extra')
result = self.theclass.__new__(cls, *args, **temp)
result.extra = extra
return result
def newmeth(self, start):
return start + self.hour + self.year
args = 2002, 12, 31, 4, 5, 6, 500, FixedOffset(-300, "EST", 1)
dt1 = self.theclass(*args)
dt2 = C(*args, **{'extra': 7})
self.assertEqual(dt2.__class__, C)
self.assertEqual(dt2.theAnswer, 42)
self.assertEqual(dt2.extra, 7)
self.assertEqual(dt1.utcoffset(), dt2.utcoffset())
self.assertEqual(dt2.newmeth(-7), dt1.hour + dt1.year - 7)
# Pain to set up DST-aware tzinfo classes.
def first_sunday_on_or_after(dt):
days_to_go = 6 - dt.weekday()
if days_to_go:
dt += timedelta(days_to_go)
return dt
ZERO = timedelta(0)
MINUTE = timedelta(minutes=1)
HOUR = timedelta(hours=1)
DAY = timedelta(days=1)
# In the US, DST starts at 2am (standard time) on the first Sunday in April.
DSTSTART = datetime(1, 4, 1, 2)
# and ends at 2am (DST time; 1am standard time) on the last Sunday of Oct,
# which is the first Sunday on or after Oct 25. Because we view 1:MM as
# being standard time on that day, there is no spelling in local time of
# the last hour of DST (that's 1:MM DST, but 1:MM is taken as standard time).
DSTEND = datetime(1, 10, 25, 1)
class USTimeZone(tzinfo):
def __init__(self, hours, reprname, stdname, dstname):
self.stdoffset = timedelta(hours=hours)
self.reprname = reprname
self.stdname = stdname
self.dstname = dstname
def __repr__(self):
return self.reprname
def tzname(self, dt):
if self.dst(dt):
return self.dstname
else:
return self.stdname
def utcoffset(self, dt):
return self.stdoffset + self.dst(dt)
def dst(self, dt):
if dt is None or dt.tzinfo is None:
# An exception instead may be sensible here, in one or more of
# the cases.
return ZERO
assert dt.tzinfo is self
# Find first Sunday in April.
start = first_sunday_on_or_after(DSTSTART.replace(year=dt.year))
assert start.weekday() == 6 and start.month == 4 and start.day <= 7
# Find last Sunday in October.
end = first_sunday_on_or_after(DSTEND.replace(year=dt.year))
assert end.weekday() == 6 and end.month == 10 and end.day >= 25
# Can't compare naive to aware objects, so strip the timezone from
# dt first.
if start <= dt.replace(tzinfo=None) < end:
return HOUR
else:
return ZERO
Eastern = USTimeZone(-5, "Eastern", "EST", "EDT")
Central = USTimeZone(-6, "Central", "CST", "CDT")
Mountain = USTimeZone(-7, "Mountain", "MST", "MDT")
Pacific = USTimeZone(-8, "Pacific", "PST", "PDT")
utc_real = FixedOffset(0, "UTC", 0)
# For better test coverage, we want another flavor of UTC that's west of
# the Eastern and Pacific timezones.
utc_fake = FixedOffset(-12*60, "UTCfake", 0)
class TestTimezoneConversions(unittest.TestCase):
# The DST switch times for 2002, in std time.
dston = datetime(2002, 4, 7, 2)
dstoff = datetime(2002, 10, 27, 1)
theclass = datetime
# Check a time that's inside DST.
def checkinside(self, dt, tz, utc, dston, dstoff):
self.assertEqual(dt.dst(), HOUR)
# Conversion to our own timezone is always an identity.
self.assertEqual(dt.astimezone(tz), dt)
asutc = dt.astimezone(utc)
there_and_back = asutc.astimezone(tz)
# Conversion to UTC and back isn't always an identity here,
# because there are redundant spellings (in local time) of
# UTC time when DST begins: the clock jumps from 1:59:59
# to 3:00:00, and a local time of 2:MM:SS doesn't really
# make sense then. The classes above treat 2:MM:SS as
# daylight time then (it's "after 2am"), really an alias
# for 1:MM:SS standard time. The latter form is what
# conversion back from UTC produces.
if dt.date() == dston.date() and dt.hour == 2:
# We're in the redundant hour, and coming back from
# UTC gives the 1:MM:SS standard-time spelling.
self.assertEqual(there_and_back + HOUR, dt)
# Although during was considered to be in daylight
# time, there_and_back is not.
self.assertEqual(there_and_back.dst(), ZERO)
# They're the same times in UTC.
self.assertEqual(there_and_back.astimezone(utc),
dt.astimezone(utc))
else:
# We're not in the redundant hour.
self.assertEqual(dt, there_and_back)
# Because we have a redundant spelling when DST begins, there is
# (unfortunately) an hour when DST ends that can't be spelled at all in
# local time. When DST ends, the clock jumps from 1:59 back to 1:00
# again. The hour 1:MM DST has no spelling then: 1:MM is taken to be
# standard time. 1:MM DST == 0:MM EST, but 0:MM is taken to be
# daylight time. The hour 1:MM daylight == 0:MM standard can't be
# expressed in local time. Nevertheless, we want conversion back
# from UTC to mimic the local clock's "repeat an hour" behavior.
nexthour_utc = asutc + HOUR
nexthour_tz = nexthour_utc.astimezone(tz)
if dt.date() == dstoff.date() and dt.hour == 0:
# We're in the hour before the last DST hour. The last DST hour
# is ineffable. We want the conversion back to repeat 1:MM.
self.assertEqual(nexthour_tz, dt.replace(hour=1))
nexthour_utc += HOUR
nexthour_tz = nexthour_utc.astimezone(tz)
self.assertEqual(nexthour_tz, dt.replace(hour=1))
else:
self.assertEqual(nexthour_tz - dt, HOUR)
# Check a time that's outside DST.
def checkoutside(self, dt, tz, utc):
self.assertEqual(dt.dst(), ZERO)
# Conversion to our own timezone is always an identity.
self.assertEqual(dt.astimezone(tz), dt)
# Converting to UTC and back is an identity too.
asutc = dt.astimezone(utc)
there_and_back = asutc.astimezone(tz)
self.assertEqual(dt, there_and_back)
def convert_between_tz_and_utc(self, tz, utc):
dston = self.dston.replace(tzinfo=tz)
# Because 1:MM on the day DST ends is taken as being standard time,
# there is no spelling in tz for the last hour of daylight time.
# For purposes of the test, the last hour of DST is 0:MM, which is
# taken as being daylight time (and 1:MM is taken as being standard
# time).
dstoff = self.dstoff.replace(tzinfo=tz)
for delta in (timedelta(weeks=13),
DAY,
HOUR,
timedelta(minutes=1),
timedelta(microseconds=1)):
self.checkinside(dston, tz, utc, dston, dstoff)
for during in dston + delta, dstoff - delta:
self.checkinside(during, tz, utc, dston, dstoff)
self.checkoutside(dstoff, tz, utc)
for outside in dston - delta, dstoff + delta:
self.checkoutside(outside, tz, utc)
def test_easy(self):
# Despite the name of this test, the endcases are excruciating.
self.convert_between_tz_and_utc(Eastern, utc_real)
self.convert_between_tz_and_utc(Pacific, utc_real)
self.convert_between_tz_and_utc(Eastern, utc_fake)
self.convert_between_tz_and_utc(Pacific, utc_fake)
# The next is really dancing near the edge. It works because
# Pacific and Eastern are far enough apart that their "problem
# hours" don't overlap.
self.convert_between_tz_and_utc(Eastern, Pacific)
self.convert_between_tz_and_utc(Pacific, Eastern)
# OTOH, these fail! Don't enable them. The difficulty is that
# the edge case tests assume that every hour is representable in
# the "utc" class. This is always true for a fixed-offset tzinfo
# class (lke utc_real and utc_fake), but not for Eastern or Central.
# For these adjacent DST-aware time zones, the range of time offsets
# tested ends up creating hours in the one that aren't representable
# in the other. For the same reason, we would see failures in the
# Eastern vs Pacific tests too if we added 3*HOUR to the list of
# offset deltas in convert_between_tz_and_utc().
#
# self.convert_between_tz_and_utc(Eastern, Central) # can't work
# self.convert_between_tz_and_utc(Central, Eastern) # can't work
def test_tricky(self):
# 22:00 on day before daylight starts.
fourback = self.dston - timedelta(hours=4)
ninewest = FixedOffset(-9*60, "-0900", 0)
fourback = fourback.replace(tzinfo=ninewest)
# 22:00-0900 is 7:00 UTC == 2:00 EST == 3:00 DST. Since it's "after
# 2", we should get the 3 spelling.
# If we plug 22:00 the day before into Eastern, it "looks like std
# time", so its offset is returned as -5, and -5 - -9 = 4. Adding 4
# to 22:00 lands on 2:00, which makes no sense in local time (the
# local clock jumps from 1 to 3). The point here is to make sure we
# get the 3 spelling.
expected = self.dston.replace(hour=3)
got = fourback.astimezone(Eastern).replace(tzinfo=None)
self.assertEqual(expected, got)
# Similar, but map to 6:00 UTC == 1:00 EST == 2:00 DST. In that
# case we want the 1:00 spelling.
sixutc = self.dston.replace(hour=6, tzinfo=utc_real)
# Now 6:00 "looks like daylight", so the offset wrt Eastern is -4,
# and adding -4-0 == -4 gives the 2:00 spelling. We want the 1:00 EST
# spelling.
expected = self.dston.replace(hour=1)
got = sixutc.astimezone(Eastern).replace(tzinfo=None)
self.assertEqual(expected, got)
# Now on the day DST ends, we want "repeat an hour" behavior.
# UTC 4:MM 5:MM 6:MM 7:MM checking these
# EST 23:MM 0:MM 1:MM 2:MM
# EDT 0:MM 1:MM 2:MM 3:MM
# wall 0:MM 1:MM 1:MM 2:MM against these
for utc in utc_real, utc_fake:
for tz in Eastern, Pacific:
first_std_hour = self.dstoff - timedelta(hours=2) # 23:MM
# Convert that to UTC.
first_std_hour -= tz.utcoffset(None)
# Adjust for possibly fake UTC.
asutc = first_std_hour + utc.utcoffset(None)
# First UTC hour to convert; this is 4:00 when utc=utc_real &
# tz=Eastern.
asutcbase = asutc.replace(tzinfo=utc)
for tzhour in (0, 1, 1, 2):
expectedbase = self.dstoff.replace(hour=tzhour)
for minute in 0, 30, 59:
expected = expectedbase.replace(minute=minute)
asutc = asutcbase.replace(minute=minute)
astz = asutc.astimezone(tz)
self.assertEqual(astz.replace(tzinfo=None), expected)
asutcbase += HOUR
def test_bogus_dst(self):
class ok(tzinfo):
def utcoffset(self, dt): return HOUR
def dst(self, dt): return HOUR
now = self.theclass.now().replace(tzinfo=utc_real)
# Doesn't blow up.
now.astimezone(ok())
# Does blow up.
class notok(ok):
def dst(self, dt): return None
self.assertRaises(ValueError, now.astimezone, notok())
# Sometimes blow up. In the following, tzinfo.dst()
# implementation may return None or not None depending on
# whether DST is assumed to be in effect. In this situation,
# a ValueError should be raised by astimezone().
class tricky_notok(ok):
def dst(self, dt):
if dt.year == 2000:
return None
else:
return 10*HOUR
dt = self.theclass(2001, 1, 1).replace(tzinfo=utc_real)
self.assertRaises(ValueError, dt.astimezone, tricky_notok())
def test_fromutc(self):
self.assertRaises(TypeError, Eastern.fromutc) # not enough args
now = datetime.utcnow().replace(tzinfo=utc_real)
self.assertRaises(ValueError, Eastern.fromutc, now) # wrong tzinfo
now = now.replace(tzinfo=Eastern) # insert correct tzinfo
enow = Eastern.fromutc(now) # doesn't blow up
self.assertEqual(enow.tzinfo, Eastern) # has right tzinfo member
self.assertRaises(TypeError, Eastern.fromutc, now, now) # too many args
self.assertRaises(TypeError, Eastern.fromutc, date.today()) # wrong type
# Always converts UTC to standard time.
class FauxUSTimeZone(USTimeZone):
def fromutc(self, dt):
return dt + self.stdoffset
FEastern = FauxUSTimeZone(-5, "FEastern", "FEST", "FEDT")
# UTC 4:MM 5:MM 6:MM 7:MM 8:MM 9:MM
# EST 23:MM 0:MM 1:MM 2:MM 3:MM 4:MM
# EDT 0:MM 1:MM 2:MM 3:MM 4:MM 5:MM
# Check around DST start.
start = self.dston.replace(hour=4, tzinfo=Eastern)
fstart = start.replace(tzinfo=FEastern)
for wall in 23, 0, 1, 3, 4, 5:
expected = start.replace(hour=wall)
if wall == 23:
expected -= timedelta(days=1)
got = Eastern.fromutc(start)
self.assertEqual(expected, got)
expected = fstart + FEastern.stdoffset
got = FEastern.fromutc(fstart)
self.assertEqual(expected, got)
# Ensure astimezone() calls fromutc() too.
got = fstart.replace(tzinfo=utc_real).astimezone(FEastern)
self.assertEqual(expected, got)
start += HOUR
fstart += HOUR
# Check around DST end.
start = self.dstoff.replace(hour=4, tzinfo=Eastern)
fstart = start.replace(tzinfo=FEastern)
for wall in 0, 1, 1, 2, 3, 4:
expected = start.replace(hour=wall)
got = Eastern.fromutc(start)
self.assertEqual(expected, got)
expected = fstart + FEastern.stdoffset
got = FEastern.fromutc(fstart)
self.assertEqual(expected, got)
# Ensure astimezone() calls fromutc() too.
got = fstart.replace(tzinfo=utc_real).astimezone(FEastern)
self.assertEqual(expected, got)
start += HOUR
fstart += HOUR
#############################################################################
# oddballs
class Oddballs(unittest.TestCase):
def test_bug_1028306(self):
# Trying to compare a date to a datetime should act like a mixed-
# type comparison, despite that datetime is a subclass of date.
as_date = date.today()
as_datetime = datetime.combine(as_date, time())
self.assertTrue(as_date != as_datetime)
self.assertTrue(as_datetime != as_date)
self.assertFalse(as_date == as_datetime)
self.assertFalse(as_datetime == as_date)
self.assertRaises(TypeError, lambda: as_date < as_datetime)
self.assertRaises(TypeError, lambda: as_datetime < as_date)
self.assertRaises(TypeError, lambda: as_date <= as_datetime)
self.assertRaises(TypeError, lambda: as_datetime <= as_date)
self.assertRaises(TypeError, lambda: as_date > as_datetime)
self.assertRaises(TypeError, lambda: as_datetime > as_date)
self.assertRaises(TypeError, lambda: as_date >= as_datetime)
self.assertRaises(TypeError, lambda: as_datetime >= as_date)
# Nevertheless, comparison should work with the base-class (date)
# projection if use of a date method is forced.
self.assertEqual(as_date.__eq__(as_datetime), True)
different_day = (as_date.day + 1) % 20 + 1
as_different = as_datetime.replace(day= different_day)
self.assertEqual(as_date.__eq__(as_different), False)
# And date should compare with other subclasses of date. If a
# subclass wants to stop this, it's up to the subclass to do so.
date_sc = SubclassDate(as_date.year, as_date.month, as_date.day)
self.assertEqual(as_date, date_sc)
self.assertEqual(date_sc, as_date)
# Ditto for datetimes.
datetime_sc = SubclassDatetime(as_datetime.year, as_datetime.month,
as_date.day, 0, 0, 0)
self.assertEqual(as_datetime, datetime_sc)
self.assertEqual(datetime_sc, as_datetime)
def test_extra_attributes(self):
for x in [date.today(),
time(),
datetime.utcnow(),
timedelta(),
tzinfo(),
timezone(timedelta())]:
with self.assertRaises(AttributeError):
x.abc = 1
def test_check_arg_types(self):
class Number:
def __init__(self, value):
self.value = value
def __int__(self):
return self.value
for xx in [decimal.Decimal(10),
decimal.Decimal('10.9'),
Number(10)]:
self.assertEqual(datetime(10, 10, 10, 10, 10, 10, 10),
datetime(xx, xx, xx, xx, xx, xx, xx))
with self.assertRaisesRegex(TypeError, '^an integer is required '
r'\(got type str\)$'):
datetime(10, 10, '10')
f10 = Number(10.9)
with self.assertRaisesRegex(TypeError, '^__int__ returned non-int '
r'\(type float\)$'):
datetime(10, 10, f10)
class Float(float):
pass
s10 = Float(10.9)
with self.assertRaisesRegex(TypeError, '^integer argument expected, '
'got float$'):
datetime(10, 10, s10)
with self.assertRaises(TypeError):
datetime(10., 10, 10)
with self.assertRaises(TypeError):
datetime(10, 10., 10)
with self.assertRaises(TypeError):
datetime(10, 10, 10.)
with self.assertRaises(TypeError):
datetime(10, 10, 10, 10.)
with self.assertRaises(TypeError):
datetime(10, 10, 10, 10, 10.)
with self.assertRaises(TypeError):
datetime(10, 10, 10, 10, 10, 10.)
with self.assertRaises(TypeError):
datetime(10, 10, 10, 10, 10, 10, 10.)
#############################################################################
# Local Time Disambiguation
# An experimental reimplementation of fromutc that respects the "fold" flag.
class tzinfo2(tzinfo):
def fromutc(self, dt):
"datetime in UTC -> datetime in local time."
if not isinstance(dt, datetime):
raise TypeError("fromutc() requires a datetime argument")
if dt.tzinfo is not self:
raise ValueError("dt.tzinfo is not self")
# Returned value satisfies
# dt + ldt.utcoffset() = ldt
off0 = dt.replace(fold=0).utcoffset()
off1 = dt.replace(fold=1).utcoffset()
if off0 is None or off1 is None or dt.dst() is None:
raise ValueError
if off0 == off1:
ldt = dt + off0
off1 = ldt.utcoffset()
if off0 == off1:
return ldt
# Now, we discovered both possible offsets, so
# we can just try four possible solutions:
for off in [off0, off1]:
ldt = dt + off
if ldt.utcoffset() == off:
return ldt
ldt = ldt.replace(fold=1)
if ldt.utcoffset() == off:
return ldt
raise ValueError("No suitable local time found")
# Reimplementing simplified US timezones to respect the "fold" flag:
class USTimeZone2(tzinfo2):
def __init__(self, hours, reprname, stdname, dstname):
self.stdoffset = timedelta(hours=hours)
self.reprname = reprname
self.stdname = stdname
self.dstname = dstname
def __repr__(self):
return self.reprname
def tzname(self, dt):
if self.dst(dt):
return self.dstname
else:
return self.stdname
def utcoffset(self, dt):
return self.stdoffset + self.dst(dt)
def dst(self, dt):
if dt is None or dt.tzinfo is None:
# An exception instead may be sensible here, in one or more of
# the cases.
return ZERO
assert dt.tzinfo is self
# Find first Sunday in April.
start = first_sunday_on_or_after(DSTSTART.replace(year=dt.year))
assert start.weekday() == 6 and start.month == 4 and start.day <= 7
# Find last Sunday in October.
end = first_sunday_on_or_after(DSTEND.replace(year=dt.year))
assert end.weekday() == 6 and end.month == 10 and end.day >= 25
# Can't compare naive to aware objects, so strip the timezone from
# dt first.
dt = dt.replace(tzinfo=None)
if start + HOUR <= dt < end:
# DST is in effect.
return HOUR
elif end <= dt < end + HOUR:
# Fold (an ambiguous hour): use dt.fold to disambiguate.
return ZERO if dt.fold else HOUR
elif start <= dt < start + HOUR:
# Gap (a non-existent hour): reverse the fold rule.
return HOUR if dt.fold else ZERO
else:
# DST is off.
return ZERO
Eastern2 = USTimeZone2(-5, "Eastern2", "EST", "EDT")
Central2 = USTimeZone2(-6, "Central2", "CST", "CDT")
Mountain2 = USTimeZone2(-7, "Mountain2", "MST", "MDT")
Pacific2 = USTimeZone2(-8, "Pacific2", "PST", "PDT")
# Europe_Vilnius_1941 tzinfo implementation reproduces the following
# 1941 transition from Olson's tzdist:
#
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
# ZoneEurope/Vilnius 1:00 - CET 1940 Aug 3
# 3:00 - MSK 1941 Jun 24
# 1:00 C-Eur CE%sT 1944 Aug
#
# $ zdump -v Europe/Vilnius | grep 1941
# Europe/Vilnius Mon Jun 23 20:59:59 1941 UTC = Mon Jun 23 23:59:59 1941 MSK isdst=0 gmtoff=10800
# Europe/Vilnius Mon Jun 23 21:00:00 1941 UTC = Mon Jun 23 23:00:00 1941 CEST isdst=1 gmtoff=7200
class Europe_Vilnius_1941(tzinfo):
def _utc_fold(self):
return [datetime(1941, 6, 23, 21, tzinfo=self), # Mon Jun 23 21:00:00 1941 UTC
datetime(1941, 6, 23, 22, tzinfo=self)] # Mon Jun 23 22:00:00 1941 UTC
def _loc_fold(self):
return [datetime(1941, 6, 23, 23, tzinfo=self), # Mon Jun 23 23:00:00 1941 MSK / CEST
datetime(1941, 6, 24, 0, tzinfo=self)] # Mon Jun 24 00:00:00 1941 CEST
def utcoffset(self, dt):
fold_start, fold_stop = self._loc_fold()
if dt < fold_start:
return 3 * HOUR
if dt < fold_stop:
return (2 if dt.fold else 3) * HOUR
# if dt >= fold_stop
return 2 * HOUR
def dst(self, dt):
fold_start, fold_stop = self._loc_fold()
if dt < fold_start:
return 0 * HOUR
if dt < fold_stop:
return (1 if dt.fold else 0) * HOUR
# if dt >= fold_stop
return 1 * HOUR
def tzname(self, dt):
fold_start, fold_stop = self._loc_fold()
if dt < fold_start:
return 'MSK'
if dt < fold_stop:
return ('MSK', 'CEST')[dt.fold]
# if dt >= fold_stop
return 'CEST'
def fromutc(self, dt):
assert dt.fold == 0
assert dt.tzinfo is self
if dt.year != 1941:
raise NotImplementedError
fold_start, fold_stop = self._utc_fold()
if dt < fold_start:
return dt + 3 * HOUR
if dt < fold_stop:
return (dt + 2 * HOUR).replace(fold=1)
# if dt >= fold_stop
return dt + 2 * HOUR
class TestLocalTimeDisambiguation(unittest.TestCase):
def test_vilnius_1941_fromutc(self):
Vilnius = Europe_Vilnius_1941()
gdt = datetime(1941, 6, 23, 20, 59, 59, tzinfo=timezone.utc)
ldt = gdt.astimezone(Vilnius)
self.assertEqual(ldt.strftime("%c %Z%z"),
'Mon Jun 23 23:59:59 1941 MSK+0300')
self.assertEqual(ldt.fold, 0)
self.assertFalse(ldt.dst())
gdt = datetime(1941, 6, 23, 21, tzinfo=timezone.utc)
ldt = gdt.astimezone(Vilnius)
self.assertEqual(ldt.strftime("%c %Z%z"),
'Mon Jun 23 23:00:00 1941 CEST+0200')
self.assertEqual(ldt.fold, 1)
self.assertTrue(ldt.dst())
gdt = datetime(1941, 6, 23, 22, tzinfo=timezone.utc)
ldt = gdt.astimezone(Vilnius)
self.assertEqual(ldt.strftime("%c %Z%z"),
'Tue Jun 24 00:00:00 1941 CEST+0200')
self.assertEqual(ldt.fold, 0)
self.assertTrue(ldt.dst())
def test_vilnius_1941_toutc(self):
Vilnius = Europe_Vilnius_1941()
ldt = datetime(1941, 6, 23, 22, 59, 59, tzinfo=Vilnius)
gdt = ldt.astimezone(timezone.utc)
self.assertEqual(gdt.strftime("%c %Z"),
'Mon Jun 23 19:59:59 1941 UTC')
ldt = datetime(1941, 6, 23, 23, 59, 59, tzinfo=Vilnius)
gdt = ldt.astimezone(timezone.utc)
self.assertEqual(gdt.strftime("%c %Z"),
'Mon Jun 23 20:59:59 1941 UTC')
ldt = datetime(1941, 6, 23, 23, 59, 59, tzinfo=Vilnius, fold=1)
gdt = ldt.astimezone(timezone.utc)
self.assertEqual(gdt.strftime("%c %Z"),
'Mon Jun 23 21:59:59 1941 UTC')
ldt = datetime(1941, 6, 24, 0, tzinfo=Vilnius)
gdt = ldt.astimezone(timezone.utc)
self.assertEqual(gdt.strftime("%c %Z"),
'Mon Jun 23 22:00:00 1941 UTC')
def test_constructors(self):
t = time(0, fold=1)
dt = datetime(1, 1, 1, fold=1)
self.assertEqual(t.fold, 1)
self.assertEqual(dt.fold, 1)
with self.assertRaises(TypeError):
time(0, 0, 0, 0, None, 0)
def test_member(self):
dt = datetime(1, 1, 1, fold=1)
t = dt.time()
self.assertEqual(t.fold, 1)
t = dt.timetz()
self.assertEqual(t.fold, 1)
def test_replace(self):
t = time(0)
dt = datetime(1, 1, 1)
self.assertEqual(t.replace(fold=1).fold, 1)
self.assertEqual(dt.replace(fold=1).fold, 1)
self.assertEqual(t.replace(fold=0).fold, 0)
self.assertEqual(dt.replace(fold=0).fold, 0)
# Check that replacement of other fields does not change "fold".
t = t.replace(fold=1, tzinfo=Eastern)
dt = dt.replace(fold=1, tzinfo=Eastern)
self.assertEqual(t.replace(tzinfo=None).fold, 1)
self.assertEqual(dt.replace(tzinfo=None).fold, 1)
# Out of bounds.
with self.assertRaises(ValueError):
t.replace(fold=2)
with self.assertRaises(ValueError):
dt.replace(fold=2)
# Check that fold is a keyword-only argument
with self.assertRaises(TypeError):
t.replace(1, 1, 1, None, 1)
with self.assertRaises(TypeError):
dt.replace(1, 1, 1, 1, 1, 1, 1, None, 1)
def test_comparison(self):
t = time(0)
dt = datetime(1, 1, 1)
self.assertEqual(t, t.replace(fold=1))
self.assertEqual(dt, dt.replace(fold=1))
def test_hash(self):
t = time(0)
dt = datetime(1, 1, 1)
self.assertEqual(hash(t), hash(t.replace(fold=1)))
self.assertEqual(hash(dt), hash(dt.replace(fold=1)))
@support.run_with_tz('EST+05EDT,M3.2.0,M11.1.0')
def test_fromtimestamp(self):
s = 1414906200
dt0 = datetime.fromtimestamp(s)
dt1 = datetime.fromtimestamp(s + 3600)
self.assertEqual(dt0.fold, 0)
self.assertEqual(dt1.fold, 1)
@support.run_with_tz('Australia/Lord_Howe')
def test_fromtimestamp_lord_howe(self):
tm = _time.localtime(1.4e9)
if _time.strftime('%Z%z', tm) != 'LHST+1030':
self.skipTest('Australia/Lord_Howe timezone is not supported on this platform')
# $ TZ=Australia/Lord_Howe date -r 1428158700
# Sun Apr 5 01:45:00 LHDT 2015
# $ TZ=Australia/Lord_Howe date -r 1428160500
# Sun Apr 5 01:45:00 LHST 2015
s = 1428158700
t0 = datetime.fromtimestamp(s)
t1 = datetime.fromtimestamp(s + 1800)
self.assertEqual(t0, t1)
self.assertEqual(t0.fold, 0)
self.assertEqual(t1.fold, 1)
@support.run_with_tz('EST+05EDT,M3.2.0,M11.1.0')
def test_timestamp(self):
dt0 = datetime(2014, 11, 2, 1, 30)
dt1 = dt0.replace(fold=1)
self.assertEqual(dt0.timestamp() + 3600,
dt1.timestamp())
@support.run_with_tz('Australia/Lord_Howe')
def test_timestamp_lord_howe(self):
tm = _time.localtime(1.4e9)
if _time.strftime('%Z%z', tm) != 'LHST+1030':
self.skipTest('Australia/Lord_Howe timezone is not supported on this platform')
t = datetime(2015, 4, 5, 1, 45)
s0 = t.replace(fold=0).timestamp()
s1 = t.replace(fold=1).timestamp()
self.assertEqual(s0 + 1800, s1)
@support.run_with_tz('EST+05EDT,M3.2.0,M11.1.0')
def test_astimezone(self):
dt0 = datetime(2014, 11, 2, 1, 30)
dt1 = dt0.replace(fold=1)
# Convert both naive instances to aware.
adt0 = dt0.astimezone()
adt1 = dt1.astimezone()
# Check that the first instance in DST zone and the second in STD
self.assertEqual(adt0.tzname(), 'EDT')
self.assertEqual(adt1.tzname(), 'EST')
self.assertEqual(adt0 + HOUR, adt1)
# Aware instances with fixed offset tzinfo's always have fold=0
self.assertEqual(adt0.fold, 0)
self.assertEqual(adt1.fold, 0)
def test_pickle_fold(self):
t = time(fold=1)
dt = datetime(1, 1, 1, fold=1)
for pickler, unpickler, proto in pickle_choices:
for x in [t, dt]:
s = pickler.dumps(x, proto)
y = unpickler.loads(s)
self.assertEqual(x, y)
self.assertEqual((0 if proto < 4 else x.fold), y.fold)
def test_repr(self):
t = time(fold=1)
dt = datetime(1, 1, 1, fold=1)
self.assertEqual(repr(t), 'datetime.time(0, 0, fold=1)')
self.assertEqual(repr(dt),
'datetime.datetime(1, 1, 1, 0, 0, fold=1)')
def test_dst(self):
# Let's first establish that things work in regular times.
dt_summer = datetime(2002, 10, 27, 1, tzinfo=Eastern2) - timedelta.resolution
dt_winter = datetime(2002, 10, 27, 2, tzinfo=Eastern2)
self.assertEqual(dt_summer.dst(), HOUR)
self.assertEqual(dt_winter.dst(), ZERO)
# The disambiguation flag is ignored
self.assertEqual(dt_summer.replace(fold=1).dst(), HOUR)
self.assertEqual(dt_winter.replace(fold=1).dst(), ZERO)
# Pick local time in the fold.
for minute in [0, 30, 59]:
dt = datetime(2002, 10, 27, 1, minute, tzinfo=Eastern2)
# With fold=0 (the default) it is in DST.
self.assertEqual(dt.dst(), HOUR)
# With fold=1 it is in STD.
self.assertEqual(dt.replace(fold=1).dst(), ZERO)
# Pick local time in the gap.
for minute in [0, 30, 59]:
dt = datetime(2002, 4, 7, 2, minute, tzinfo=Eastern2)
# With fold=0 (the default) it is in STD.
self.assertEqual(dt.dst(), ZERO)
# With fold=1 it is in DST.
self.assertEqual(dt.replace(fold=1).dst(), HOUR)
def test_utcoffset(self):
# Let's first establish that things work in regular times.
dt_summer = datetime(2002, 10, 27, 1, tzinfo=Eastern2) - timedelta.resolution
dt_winter = datetime(2002, 10, 27, 2, tzinfo=Eastern2)
self.assertEqual(dt_summer.utcoffset(), -4 * HOUR)
self.assertEqual(dt_winter.utcoffset(), -5 * HOUR)
# The disambiguation flag is ignored
self.assertEqual(dt_summer.replace(fold=1).utcoffset(), -4 * HOUR)
self.assertEqual(dt_winter.replace(fold=1).utcoffset(), -5 * HOUR)
def test_fromutc(self):
# Let's first establish that things work in regular times.
u_summer = datetime(2002, 10, 27, 6, tzinfo=Eastern2) - timedelta.resolution
u_winter = datetime(2002, 10, 27, 7, tzinfo=Eastern2)
t_summer = Eastern2.fromutc(u_summer)
t_winter = Eastern2.fromutc(u_winter)
self.assertEqual(t_summer, u_summer - 4 * HOUR)
self.assertEqual(t_winter, u_winter - 5 * HOUR)
self.assertEqual(t_summer.fold, 0)
self.assertEqual(t_winter.fold, 0)
# What happens in the fall-back fold?
u = datetime(2002, 10, 27, 5, 30, tzinfo=Eastern2)
t0 = Eastern2.fromutc(u)
u += HOUR
t1 = Eastern2.fromutc(u)
self.assertEqual(t0, t1)
self.assertEqual(t0.fold, 0)
self.assertEqual(t1.fold, 1)
# The tricky part is when u is in the local fold:
u = datetime(2002, 10, 27, 1, 30, tzinfo=Eastern2)
t = Eastern2.fromutc(u)
self.assertEqual((t.day, t.hour), (26, 21))
# .. or gets into the local fold after a standard time adjustment
u = datetime(2002, 10, 27, 6, 30, tzinfo=Eastern2)
t = Eastern2.fromutc(u)
self.assertEqual((t.day, t.hour), (27, 1))
# What happens in the spring-forward gap?
u = datetime(2002, 4, 7, 2, 0, tzinfo=Eastern2)
t = Eastern2.fromutc(u)
self.assertEqual((t.day, t.hour), (6, 21))
def test_mixed_compare_regular(self):
t = datetime(2000, 1, 1, tzinfo=Eastern2)
self.assertEqual(t, t.astimezone(timezone.utc))
t = datetime(2000, 6, 1, tzinfo=Eastern2)
self.assertEqual(t, t.astimezone(timezone.utc))
def test_mixed_compare_fold(self):
t_fold = datetime(2002, 10, 27, 1, 45, tzinfo=Eastern2)
t_fold_utc = t_fold.astimezone(timezone.utc)
self.assertNotEqual(t_fold, t_fold_utc)
def test_mixed_compare_gap(self):
t_gap = datetime(2002, 4, 7, 2, 45, tzinfo=Eastern2)
t_gap_utc = t_gap.astimezone(timezone.utc)
self.assertNotEqual(t_gap, t_gap_utc)
def test_hash_aware(self):
t = datetime(2000, 1, 1, tzinfo=Eastern2)
self.assertEqual(hash(t), hash(t.replace(fold=1)))
t_fold = datetime(2002, 10, 27, 1, 45, tzinfo=Eastern2)
t_gap = datetime(2002, 4, 7, 2, 45, tzinfo=Eastern2)
self.assertEqual(hash(t_fold), hash(t_fold.replace(fold=1)))
self.assertEqual(hash(t_gap), hash(t_gap.replace(fold=1)))
SEC = timedelta(0, 1)
def pairs(iterable):
a, b = itertools.tee(iterable)
next(b, None)
return zip(a, b)
class ZoneInfo(tzinfo):
zoneroot = '/usr/share/zoneinfo'
def __init__(self, ut, ti):
"""
:param ut: array
Array of transition point timestamps
:param ti: list
A list of (offset, isdst, abbr) tuples
:return: None
"""
self.ut = ut
self.ti = ti
self.lt = self.invert(ut, ti)
@staticmethod
def invert(ut, ti):
lt = (array('q', ut), array('q', ut))
if ut:
offset = ti[0][0] // SEC
lt[0][0] += offset
lt[1][0] += offset
for i in range(1, len(ut)):
lt[0][i] += ti[i-1][0] // SEC
lt[1][i] += ti[i][0] // SEC
return lt
@classmethod
def fromfile(cls, fileobj):
if fileobj.read(4).decode() != "TZif":
raise ValueError("not a zoneinfo file")
fileobj.seek(32)
counts = array('i')
counts.fromfile(fileobj, 3)
if sys.byteorder != 'big':
counts.byteswap()
ut = array('i')
ut.fromfile(fileobj, counts[0])
if sys.byteorder != 'big':
ut.byteswap()
type_indices = array('B')
type_indices.fromfile(fileobj, counts[0])
ttis = []
for i in range(counts[1]):
ttis.append(struct.unpack(">lbb", fileobj.read(6)))
abbrs = fileobj.read(counts[2])
# Convert ttis
for i, (gmtoff, isdst, abbrind) in enumerate(ttis):
abbr = abbrs[abbrind:abbrs.find(0, abbrind)].decode()
ttis[i] = (timedelta(0, gmtoff), isdst, abbr)
ti = [None] * len(ut)
for i, idx in enumerate(type_indices):
ti[i] = ttis[idx]
self = cls(ut, ti)
return self
@classmethod
def fromname(cls, name):
path = os.path.join(cls.zoneroot, name)
with open(path, 'rb') as f:
return cls.fromfile(f)
EPOCHORDINAL = date(1970, 1, 1).toordinal()
def fromutc(self, dt):
"""datetime in UTC -> datetime in local time."""
if not isinstance(dt, datetime):
raise TypeError("fromutc() requires a datetime argument")
if dt.tzinfo is not self:
raise ValueError("dt.tzinfo is not self")
timestamp = ((dt.toordinal() - self.EPOCHORDINAL) * 86400
+ dt.hour * 3600
+ dt.minute * 60
+ dt.second)
if timestamp < self.ut[1]:
tti = self.ti[0]
fold = 0
else:
idx = bisect.bisect_right(self.ut, timestamp)
assert self.ut[idx-1] <= timestamp
assert idx == len(self.ut) or timestamp < self.ut[idx]
tti_prev, tti = self.ti[idx-2:idx]
# Detect fold
shift = tti_prev[0] - tti[0]
fold = (shift > timedelta(0, timestamp - self.ut[idx-1]))
dt += tti[0]
if fold:
return dt.replace(fold=1)
else:
return dt
def _find_ti(self, dt, i):
timestamp = ((dt.toordinal() - self.EPOCHORDINAL) * 86400
+ dt.hour * 3600
+ dt.minute * 60
+ dt.second)
lt = self.lt[dt.fold]
idx = bisect.bisect_right(lt, timestamp)
return self.ti[max(0, idx - 1)][i]
def utcoffset(self, dt):
return self._find_ti(dt, 0)
def dst(self, dt):
isdst = self._find_ti(dt, 1)
# XXX: We cannot accurately determine the "save" value,
# so let's return 1h whenever DST is in effect. Since
# we don't use dst() in fromutc(), it is unlikely that
# it will be needed for anything more than bool(dst()).
return ZERO if isdst else HOUR
def tzname(self, dt):
return self._find_ti(dt, 2)
@classmethod
def zonenames(cls, zonedir=None):
if zonedir is None:
zonedir = cls.zoneroot
zone_tab = os.path.join(zonedir, 'zone.tab')
try:
f = open(zone_tab)
except OSError:
return
with f:
for line in f:
line = line.strip()
if line and not line.startswith('#'):
yield line.split()[2]
@classmethod
def stats(cls, start_year=1):
count = gap_count = fold_count = zeros_count = 0
min_gap = min_fold = timedelta.max
max_gap = max_fold = ZERO
min_gap_datetime = max_gap_datetime = datetime.min
min_gap_zone = max_gap_zone = None
min_fold_datetime = max_fold_datetime = datetime.min
min_fold_zone = max_fold_zone = None
stats_since = datetime(start_year, 1, 1) # Starting from 1970 eliminates a lot of noise
for zonename in cls.zonenames():
count += 1
tz = cls.fromname(zonename)
for dt, shift in tz.transitions():
if dt < stats_since:
continue
if shift > ZERO:
gap_count += 1
if (shift, dt) > (max_gap, max_gap_datetime):
max_gap = shift
max_gap_zone = zonename
max_gap_datetime = dt
if (shift, datetime.max - dt) < (min_gap, datetime.max - min_gap_datetime):
min_gap = shift
min_gap_zone = zonename
min_gap_datetime = dt
elif shift < ZERO:
fold_count += 1
shift = -shift
if (shift, dt) > (max_fold, max_fold_datetime):
max_fold = shift
max_fold_zone = zonename
max_fold_datetime = dt
if (shift, datetime.max - dt) < (min_fold, datetime.max - min_fold_datetime):
min_fold = shift
min_fold_zone = zonename
min_fold_datetime = dt
else:
zeros_count += 1
trans_counts = (gap_count, fold_count, zeros_count)
print("Number of zones: %5d" % count)
print("Number of transitions: %5d = %d (gaps) + %d (folds) + %d (zeros)" %
((sum(trans_counts),) + trans_counts))
print("Min gap: %16s at %s in %s" % (min_gap, min_gap_datetime, min_gap_zone))
print("Max gap: %16s at %s in %s" % (max_gap, max_gap_datetime, max_gap_zone))
print("Min fold: %16s at %s in %s" % (min_fold, min_fold_datetime, min_fold_zone))
print("Max fold: %16s at %s in %s" % (max_fold, max_fold_datetime, max_fold_zone))
def transitions(self):
for (_, prev_ti), (t, ti) in pairs(zip(self.ut, self.ti)):
shift = ti[0] - prev_ti[0]
yield datetime.utcfromtimestamp(t), shift
def nondst_folds(self):
"""Find all folds with the same value of isdst on both sides of the transition."""
for (_, prev_ti), (t, ti) in pairs(zip(self.ut, self.ti)):
shift = ti[0] - prev_ti[0]
if shift < ZERO and ti[1] == prev_ti[1]:
yield datetime.utcfromtimestamp(t), -shift, prev_ti[2], ti[2]
@classmethod
def print_all_nondst_folds(cls, same_abbr=False, start_year=1):
count = 0
for zonename in cls.zonenames():
tz = cls.fromname(zonename)
for dt, shift, prev_abbr, abbr in tz.nondst_folds():
if dt.year < start_year or same_abbr and prev_abbr != abbr:
continue
count += 1
print("%3d) %-30s %s %10s %5s -> %s" %
(count, zonename, dt, shift, prev_abbr, abbr))
def folds(self):
for t, shift in self.transitions():
if shift < ZERO:
yield t, -shift
def gaps(self):
for t, shift in self.transitions():
if shift > ZERO:
yield t, shift
def zeros(self):
for t, shift in self.transitions():
if not shift:
yield t
class ZoneInfoTest(unittest.TestCase):
zonename = 'America/New_York'
def setUp(self):
if sys.platform == "win32":
self.skipTest("Skipping zoneinfo tests on Windows")
try:
self.tz = ZoneInfo.fromname(self.zonename)
except FileNotFoundError as err:
self.skipTest("Skipping %s: %s" % (self.zonename, err))
def assertEquivDatetimes(self, a, b):
self.assertEqual((a.replace(tzinfo=None), a.fold, id(a.tzinfo)),
(b.replace(tzinfo=None), b.fold, id(b.tzinfo)))
def test_folds(self):
tz = self.tz
for dt, shift in tz.folds():
for x in [0 * shift, 0.5 * shift, shift - timedelta.resolution]:
udt = dt + x
ldt = tz.fromutc(udt.replace(tzinfo=tz))
self.assertEqual(ldt.fold, 1)
adt = udt.replace(tzinfo=timezone.utc).astimezone(tz)
self.assertEquivDatetimes(adt, ldt)
utcoffset = ldt.utcoffset()
self.assertEqual(ldt.replace(tzinfo=None), udt + utcoffset)
# Round trip
self.assertEquivDatetimes(ldt.astimezone(timezone.utc),
udt.replace(tzinfo=timezone.utc))
for x in [-timedelta.resolution, shift]:
udt = dt + x
udt = udt.replace(tzinfo=tz)
ldt = tz.fromutc(udt)
self.assertEqual(ldt.fold, 0)
def test_gaps(self):
tz = self.tz
for dt, shift in tz.gaps():
for x in [0 * shift, 0.5 * shift, shift - timedelta.resolution]:
udt = dt + x
udt = udt.replace(tzinfo=tz)
ldt = tz.fromutc(udt)
self.assertEqual(ldt.fold, 0)
adt = udt.replace(tzinfo=timezone.utc).astimezone(tz)
self.assertEquivDatetimes(adt, ldt)
utcoffset = ldt.utcoffset()
self.assertEqual(ldt.replace(tzinfo=None), udt.replace(tzinfo=None) + utcoffset)
# Create a local time inside the gap
ldt = tz.fromutc(dt.replace(tzinfo=tz)) - shift + x
self.assertLess(ldt.replace(fold=1).utcoffset(),
ldt.replace(fold=0).utcoffset(),
"At %s." % ldt)
for x in [-timedelta.resolution, shift]:
udt = dt + x
ldt = tz.fromutc(udt.replace(tzinfo=tz))
self.assertEqual(ldt.fold, 0)
def test_system_transitions(self):
if ('Riyadh8' in self.zonename or
# From tzdata NEWS file:
# The files solar87, solar88, and solar89 are no longer distributed.
# They were a negative experiment - that is, a demonstration that
# tz data can represent solar time only with some difficulty and error.
# Their presence in the distribution caused confusion, as Riyadh
# civil time was generally not solar time in those years.
self.zonename.startswith('right/')):
self.skipTest("Skipping %s" % self.zonename)
tz = self.tz
TZ = os.environ.get('TZ')
os.environ['TZ'] = self.zonename
try:
_time.tzset()
for udt, shift in tz.transitions():
if udt.year >= 2037:
# System support for times around the end of 32-bit time_t
# and later is flaky on many systems.
break
s0 = (udt - datetime(1970, 1, 1)) // SEC
ss = shift // SEC # shift seconds
for x in [-40 * 3600, -20*3600, -1, 0,
ss - 1, ss + 20 * 3600, ss + 40 * 3600]:
s = s0 + x
sdt = datetime.fromtimestamp(s)
tzdt = datetime.fromtimestamp(s, tz).replace(tzinfo=None)
self.assertEquivDatetimes(sdt, tzdt)
s1 = sdt.timestamp()
self.assertEqual(s, s1)
if ss > 0: # gap
# Create local time inside the gap
dt = datetime.fromtimestamp(s0) - shift / 2
ts0 = dt.timestamp()
ts1 = dt.replace(fold=1).timestamp()
self.assertEqual(ts0, s0 + ss / 2)
self.assertEqual(ts1, s0 - ss / 2)
finally:
if TZ is None:
del os.environ['TZ']
else:
os.environ['TZ'] = TZ
_time.tzset()
class ZoneInfoCompleteTest(unittest.TestSuite):
def __init__(self):
tests = []
if is_resource_enabled('tzdata'):
for name in ZoneInfo.zonenames():
Test = type('ZoneInfoTest[%s]' % name, (ZoneInfoTest,), {})
Test.zonename = name
for method in dir(Test):
if method.startswith('test_'):
tests.append(Test(method))
super().__init__(tests)
# Iran had a sub-minute UTC offset before 1946.
class IranTest(ZoneInfoTest):
zonename = 'Asia/Tehran'
def load_tests(loader, standard_tests, pattern):
standard_tests.addTest(ZoneInfoCompleteTest())
return standard_tests
if __name__ == "__main__":
unittest.main()