def test_compare_old_instances(self):
# Compare dates that don't have the _micros attribute yet
# (e.g., from old pickles).
dt = DateTime('1997/1/1')
dt1 = DateTime('1997/2/2')
dt._millis = dt._micros / 1000
del dt._micros
dt1._millis = dt1._micros / 1000
del dt1._micros
self.testCompareOperations(dt, dt1)
def test_compare_new_old_instances(self):
# Compare a date with _micros attribute with one that does not
# (e.g., from an old pickle).
dt = DateTime('1997/1/1')
dt1 = DateTime('1997/2/2')
dt1._millis = dt._micros / 1000
del dt1._micros
self.testCompareOperations(dt, dt1)
def test___setstate___without_micros(self):
ISO = '2001-10-10T00:00:00+02:00'
dt = DateTime(ISO)
micros = dt._micros
dt._millis = dt._micros / 1000
del dt._micros
state = dt.__dict__
dt1 = DateTime()
dt1.__setstate__(state)
self.assertEqual(dt1._micros, micros)
def test_strftime_old_instance(self):
# https://bugs.launchpad.net/zope2/+bug/290254
# Ensure that dates without _micros attribute (e.g., from old
# pickles) still render correctly in strftime.
ISO = '2001-10-10T00:00:00+02:00'
dt = DateTime(ISO)
dt._millis = dt._micros / 1000
del dt._micros
self.assertEqual(dt.strftime('%Y'), '2001')
# Now, create one via pickling / unpickling.
from cPickle import dumps, loads
self.assertEqual(loads(dumps(dt)).strftime('%Y'), '2001')
def createDateTimeFromMillis(millis):
"""
Returns a DateTime object, build from the number of milliseconds since epoch.
Parameter should be a int or long.
This one should be used by solvers, as DateTime.__cmp__ actually only
compares the _millis parameter of the two DateTime objects.
This is currently not perfect: DateTime only supports creating a new object
from a floating point number of seconds since epoch, so a rounding issue is
still possible, that's why _millis is explicitely set to the same value
after the DateTime object has been created from (millis / 1000.)
A better way would be to compute (yr,mo,dy,hr,mn,sc,tz,t,d,s,millisecs) from
millis, and then create the DateTime object from it (see "elif ac == 11:" in
DateTime._parse_args).
Another solution would be a DateTime implementation that relies exclusively
on integer values internally.
"""
millis = long(millis)
date = DateTime(millis / 1000.0)
date._millis = millis
return date
def createDateTimeFromMillis(millis): # pylint: disable=redefined-outer-name
"""
Returns a DateTime object, build from the number of milliseconds since epoch.
Parameter should be a int or long.
This one should be used by solvers, as DateTime.__cmp__ actually only
compares the _millis parameter of the two DateTime objects.
This is currently not perfect: DateTime only supports creating a new object
from a floating point number of seconds since epoch, so a rounding issue is
still possible, that's why _millis is explicitely set to the same value
after the DateTime object has been created from (millis / 1000.)
A better way would be to compute (yr,mo,dy,hr,mn,sc,tz,t,d,s,millisecs) from
millis, and then create the DateTime object from it (see "elif ac == 11:" in
DateTime._parse_args).
Another solution would be a DateTime implementation that relies exclusively
on integer values internally.
"""
millis = long(millis)
date = DateTime(millis / 1000.)
date._millis = millis
return date
