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import datetime
from email import utils
import test.support
import time
import unittest
import sys
import os.path
class DateTimeTests(unittest.TestCase):
datestring = 'Sun, 23 Sep 2001 20:10:55'
dateargs = (2001, 9, 23, 20, 10, 55)
offsetstring = ' -0700'
utcoffset = datetime.timedelta(hours=-7)
tz = datetime.timezone(utcoffset)
naive_dt = datetime.datetime(*dateargs)
aware_dt = datetime.datetime(*dateargs, tzinfo=tz)
def test_naive_datetime(self):
self.assertEqual(utils.format_datetime(self.naive_dt),
self.datestring + ' -0000')
def test_aware_datetime(self):
self.assertEqual(utils.format_datetime(self.aware_dt),
self.datestring + self.offsetstring)
def test_usegmt(self):
utc_dt = datetime.datetime(*self.dateargs,
tzinfo=datetime.timezone.utc)
self.assertEqual(utils.format_datetime(utc_dt, usegmt=True),
self.datestring + ' GMT')
def test_usegmt_with_naive_datetime_raises(self):
with self.assertRaises(ValueError):
utils.format_datetime(self.naive_dt, usegmt=True)
def test_usegmt_with_non_utc_datetime_raises(self):
with self.assertRaises(ValueError):
utils.format_datetime(self.aware_dt, usegmt=True)
def test_parsedate_to_datetime(self):
self.assertEqual(
utils.parsedate_to_datetime(self.datestring + self.offsetstring),
self.aware_dt)
def test_parsedate_to_datetime_naive(self):
self.assertEqual(
utils.parsedate_to_datetime(self.datestring + ' -0000'),
self.naive_dt)
class LocaltimeTests(unittest.TestCase):
def test_localtime_is_tz_aware_daylight_true(self):
test.support.patch(self, time, 'daylight', True)
t = utils.localtime()
self.assertIsNotNone(t.tzinfo)
def test_localtime_is_tz_aware_daylight_false(self):
test.support.patch(self, time, 'daylight', False)
t = utils.localtime()
self.assertIsNotNone(t.tzinfo)
def test_localtime_daylight_true_dst_false(self):
test.support.patch(self, time, 'daylight', True)
t0 = datetime.datetime(2012, 3, 12, 1, 1)
t1 = utils.localtime(t0, isdst=-1)
t2 = utils.localtime(t1)
self.assertEqual(t1, t2)
def test_localtime_daylight_false_dst_false(self):
test.support.patch(self, time, 'daylight', False)
t0 = datetime.datetime(2012, 3, 12, 1, 1)
t1 = utils.localtime(t0, isdst=-1)
t2 = utils.localtime(t1)
self.assertEqual(t1, t2)
def test_localtime_daylight_true_dst_true(self):
test.support.patch(self, time, 'daylight', True)
t0 = datetime.datetime(2012, 3, 12, 1, 1)
t1 = utils.localtime(t0, isdst=1)
t2 = utils.localtime(t1)
self.assertEqual(t1, t2)
def test_localtime_daylight_false_dst_true(self):
test.support.patch(self, time, 'daylight', False)
t0 = datetime.datetime(2012, 3, 12, 1, 1)
t1 = utils.localtime(t0, isdst=1)
t2 = utils.localtime(t1)
self.assertEqual(t1, t2)
@test.support.run_with_tz('EST+05EDT,M3.2.0,M11.1.0')
def test_localtime_epoch_utc_daylight_true(self):
test.support.patch(self, time, 'daylight', True)
t0 = datetime.datetime(1990, 1, 1, tzinfo = datetime.timezone.utc)
t1 = utils.localtime(t0)
t2 = t0 - datetime.timedelta(hours=5)
t2 = t2.replace(tzinfo = datetime.timezone(datetime.timedelta(hours=-5)))
self.assertEqual(t1, t2)
@test.support.run_with_tz('EST+05EDT,M3.2.0,M11.1.0')
def test_localtime_epoch_utc_daylight_false(self):
test.support.patch(self, time, 'daylight', False)
t0 = datetime.datetime(1990, 1, 1, tzinfo = datetime.timezone.utc)
t1 = utils.localtime(t0)
t2 = t0 - datetime.timedelta(hours=5)
t2 = t2.replace(tzinfo = datetime.timezone(datetime.timedelta(hours=-5)))
self.assertEqual(t1, t2)
def test_localtime_epoch_notz_daylight_true(self):
test.support.patch(self, time, 'daylight', True)
t0 = datetime.datetime(1990, 1, 1)
t1 = utils.localtime(t0)
t2 = utils.localtime(t0.replace(tzinfo=None))
self.assertEqual(t1, t2)
def test_localtime_epoch_notz_daylight_false(self):
test.support.patch(self, time, 'daylight', False)
t0 = datetime.datetime(1990, 1, 1)
t1 = utils.localtime(t0)
t2 = utils.localtime(t0.replace(tzinfo=None))
self.assertEqual(t1, t2)
# XXX: Need a more robust test for Olson's tzdata
@unittest.skipIf(sys.platform.startswith('win'),
"Windows does not use Olson's TZ database")
@unittest.skipUnless(os.path.exists('/usr/share/zoneinfo') or
os.path.exists('/usr/lib/zoneinfo'),
"Can't find the Olson's TZ database")
@test.support.run_with_tz('Europe/Kiev')
def test_variable_tzname(self):
t0 = datetime.datetime(1984, 1, 1, tzinfo=datetime.timezone.utc)
t1 = utils.localtime(t0)
self.assertEqual(t1.tzname(), 'MSK')
t0 = datetime.datetime(1994, 1, 1, tzinfo=datetime.timezone.utc)
t1 = utils.localtime(t0)
self.assertEqual(t1.tzname(), 'EET')
# Issue #24836: The timezone files are out of date (pre 2011k)
# on Mac OS X Snow Leopard.
@test.support.requires_mac_ver(10, 7)
class FormatDateTests(unittest.TestCase):
@test.support.run_with_tz('Europe/Minsk')
def test_formatdate(self):
timeval = time.mktime((2011, 12, 1, 18, 0, 0, 4, 335, 0))
string = utils.formatdate(timeval, localtime=False, usegmt=False)
self.assertEqual(string, 'Thu, 01 Dec 2011 15:00:00 -0000')
string = utils.formatdate(timeval, localtime=False, usegmt=True)
self.assertEqual(string, 'Thu, 01 Dec 2011 15:00:00 GMT')
@test.support.run_with_tz('Europe/Minsk')
def test_formatdate_with_localtime(self):
timeval = time.mktime((2011, 1, 1, 18, 0, 0, 6, 1, 0))
string = utils.formatdate(timeval, localtime=True)
self.assertEqual(string, 'Sat, 01 Jan 2011 18:00:00 +0200')
# Minsk moved from +0200 (with DST) to +0300 (without DST) in 2011
timeval = time.mktime((2011, 12, 1, 18, 0, 0, 4, 335, 0))
string = utils.formatdate(timeval, localtime=True)
self.assertEqual(string, 'Thu, 01 Dec 2011 18:00:00 +0300')
if __name__ == '__main__':
unittest.main()