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import datetime
from email import utils
import unittest
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)
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