def test_to_and_from_delta_bce(self):
for month, day in [(1, 1), (1, 2), (2, 1), (2, 28), (3, 10), (5, 26),
(6, 30), (12, 31)]:
fmt1 = '-{:04}-%s' % '{:02}-{:02}'.format(month, day)
fmt2 = '{}-%s' % '{:02}-{:02}'.format(month, day)
days = -sum(MONTH_DAYS_LEAP[m] for m in range(month, 13)) + day - 1
for year in range(-1, -15000, -1):
if year >= -500 or -9900 >= year >= -10100 or random.randint(
1, 20) == 1:
date_string = fmt1.format(
abs(year)) if year > -10000 else fmt2.format(year)
dt1 = Date10.fromstring(date_string)
delta1 = dt1.todelta()
delta2 = datetime.timedelta(days=days)
self.assertEqual(delta1,
delta2,
msg="Failed for %r: %r != %r" %
(dt1, delta1, delta2))
dt2 = Date10.fromdelta(delta2)
self.assertEqual(dt1,
dt2,
msg="Failed for year %d: %r != %r" %
(year, dt1, dt2))
days -= 366 if isleap(year if month <= 2 else year +
1) else 365
def test_to_and_from_delta(self):
for month, day in [(1, 1), (1, 2), (2, 1), (2, 28), (3, 10), (6, 30),
(12, 31)]:
fmt1 = '{:04}-%s' % '{:02}-{:02}'.format(month, day)
fmt2 = '{}-%s' % '{:02}-{:02}'.format(month, day)
days = sum(MONTH_DAYS[m] for m in range(1, month)) + day - 1
for year in range(1, 15000):
if year <= 500 or 9900 <= year <= 10100 or random.randint(
1, 20) == 1:
date_string = fmt1.format(
year) if year < 10000 else fmt2.format(year)
dt1 = Date10.fromstring(date_string)
delta1 = dt1.todelta()
delta2 = datetime.timedelta(days=days)
self.assertEqual(delta1,
delta2,
msg="Failed for %r: %r != %r" %
(dt1, delta1, delta2))
dt2 = Date10.fromdelta(delta2)
self.assertEqual(dt1,
dt2,
msg="Failed for year %d: %r != %r" %
(year, dt1, dt2))
days += 366 if isleap(year if month <= 2 else year +
1) else 365
def test_fromdelta(self):
self.assertIsNotNone(Date.fromstring('10000-02-28'))
self.assertEqual(Date.fromdelta(datetime.timedelta(days=0)), Date.fromstring("0001-01-01"))
self.assertEqual(Date.fromdelta(datetime.timedelta(days=31)), Date.fromstring("0001-02-01"))
self.assertEqual(Date.fromdelta(datetime.timedelta(days=59)), Date.fromstring("0001-03-01"))
self.assertEqual(Date.fromdelta(datetime.timedelta(days=151)), Date.fromstring("0001-06-01"))
self.assertEqual(Date.fromdelta(datetime.timedelta(days=153)), Date.fromstring("0001-06-03"))
self.assertEqual(DateTime.fromdelta(datetime.timedelta(days=153, seconds=72000)),
DateTime.fromstring("0001-06-03T20:00:00"))
self.assertEqual(Date.fromdelta(datetime.timedelta(days=365)), Date.fromstring("0002-01-01"))
self.assertEqual(Date.fromdelta(datetime.timedelta(days=396)), Date.fromstring("0002-02-01"))
self.assertEqual(Date.fromdelta(datetime.timedelta(days=-366)), Date.fromstring("-0000-01-01"))
self.assertEqual(Date.fromdelta(datetime.timedelta(days=-1)), Date.fromstring("-0000-12-31"))
self.assertEqual(Date.fromdelta(datetime.timedelta(days=-335)), Date.fromstring("-0000-02-01"))
self.assertEqual(Date.fromdelta(datetime.timedelta(days=-1)), Date.fromstring("-0000-12-31"))
self.assertEqual(Date10.fromdelta(datetime.timedelta(days=-366)), Date10.fromstring("-0001-01-01"))
self.assertEqual(Date10.fromdelta(datetime.timedelta(days=-326)), Date10.fromstring("-0001-02-10"))
self.assertEqual(Date10.fromdelta(datetime.timedelta(days=-1)), Date10.fromstring("-0001-12-31Z"))
# With timezone adjusting
self.assertEqual(Date10.fromdelta(datetime.timedelta(hours=-22), adjust_timezone=True),
Date10.fromstring("-0001-12-31-02:00"))
self.assertEqual(Date10.fromdelta(datetime.timedelta(hours=-27), adjust_timezone=True),
Date10.fromstring("-0001-12-31+03:00"))
self.assertEqual(Date10.fromdelta(datetime.timedelta(hours=-27, minutes=-12), adjust_timezone=True),
Date10.fromstring("-0001-12-31+03:12"))
self.assertEqual(DateTime10.fromdelta(datetime.timedelta(hours=-27, minutes=-12, seconds=-5)),
DateTime10.fromstring("-0001-12-30T20:47:55"))