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.assertIsNot(t.tzinfo, None) def test_localtime_is_tz_aware_daylight_false(self): test.support.patch(self, time, 'daylight', False) t = utils.localtime() self.assertIsNot(t.tzinfo, None) 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') if __name__ == '__main__': unittest.main()