def test_experiments(self):
now = datetime.now
utcnow = datetime.utcnow
from_ = datetime(2012, 10, 11) - timedelta(days=10)
# lambdas is for dates accuracy
experiments = [
{
'machine': lambda: m(5).days.ago(),
'expected': lambda: now() - timedelta(days=5),
},
{
'machine': lambda: m(5).days.later(),
'expected': lambda: now() + timedelta(days=5),
},
{
'machine': lambda: m(5).days.ago(in_utc=True),
'expected': lambda: utcnow() - timedelta(days=5),
'msg': 'date should be in utc'
},
{
'machine': lambda: m(5).days.later(in_utc=True),
'expected': lambda: utcnow() + timedelta(days=5),
'msg': 'date should be in utc'
},
{
'machine': lambda: m(5).days.ago(from_=from_),
'expected': lambda: from_ - timedelta(days=5),
'msg': 'calculation from "from_" date is wrong'
},
{
'machine': lambda: m(5).days.and_(10).minutes.ago(),
'expected': lambda: m(10).minutes.ago(from_=m(5).days.ago()),
'msg': 'calculation with "and" chain is wrong'
},
{
'machine': lambda: m(9).days.and_(8).hours.and_(7).seconds.later(),
'expected': lambda: now() + timedelta(days=9, hours=8, seconds=7),
'msg': 'calculation with long chain is wrong'
},
{
'machine': lambda: m(1.5).days.ago(from_=from_),
'expected': lambda: from_ - timedelta(days=1.5),
'msg': 'float delta works wrong'
}
]
for exp in experiments:
response = exp['machine']()
self.assert_equals_dates(response, exp['expected'](), msg=exp.get('msg'))
def test_singular_date_component(self):
experiments = ['day', 'hour', 'minute', 'second', 'microsecond']
for exp in experiments:
from_ = datetime(2012, 10, 11)
kwargs = {exp + 's': 1}
expected = from_ - timedelta(**kwargs)
msg_error = 'singular form for "%s" does not supported' % exp
self.assertEquals(getattr(m(1), exp).ago(from_=from_), expected, msg_error)
