import datetime from email import utils import test.support import time 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) def test_parsedate_to_datetime_with_invalid_raises_valueerror(self): # See also test_parsedate_returns_None_for_invalid_strings in test_email. invalid_dates = [ '', ' ', '0', 'A Complete Waste of Time', 'Wed, 3 Apr 2002 12.34.56.78+0800' 'Tue, 06 Jun 2017 27:39:33 +0600', 'Tue, 06 Jun 2017 07:39:33 +2600', 'Tue, 06 Jun 2017 27:39:33', '17 June , 2022', 'Friday, -Nov-82 16:14:55 EST', 'Friday, Nov--82 16:14:55 EST', 'Friday, 19-Nov- 16:14:55 EST', ] for dtstr in invalid_dates: with self.subTest(dtstr=dtstr): self.assertRaises(ValueError, utils.parsedate_to_datetime, dtstr) 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) 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) t2 = utils.localtime(t1) self.assertEqual(t1, t2) @test.support.run_with_tz('Europe/Minsk') 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) t2 = utils.localtime(t1) self.assertEqual(t1, t2) @test.support.run_with_tz('Europe/Minsk') 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) 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) @test.support.run_with_tz('Europe/Kyiv') def test_variable_tzname(self): t0 = datetime.datetime(1984, 1, 1, tzinfo=datetime.timezone.utc) t1 = utils.localtime(t0) if t1.tzname() in ('Europe', 'UTC'): self.skipTest("Can't find a Kyiv timezone database") 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()