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|
from datetime import datetime, timedelta
import sqlalchemy as sa
from pytest import mark
from sqlalchemy_utils import DateTimeRangeType
from tests import TestCase
intervals = None
inf = 0
try:
import intervals
from infinity import inf
except ImportError:
pass
@mark.skipif('intervals is None')
class DateRangeTestCase(TestCase):
def create_models(self):
class Booking(self.Base):
__tablename__ = 'booking'
id = sa.Column(sa.Integer, primary_key=True)
during = sa.Column(DateTimeRangeType)
self.Booking = Booking
def create_booking(self, date_range):
booking = self.Booking(
during=date_range
)
self.session.add(booking)
self.session.commit()
return self.session.query(self.Booking).first()
def test_nullify_range(self):
booking = self.create_booking(None)
assert booking.during is None
@mark.parametrize(
('date_range'),
(
[datetime(2015, 1, 1), datetime(2015, 1, 3)],
[datetime(2015, 1, 1), inf],
[-inf, datetime(2015, 1, 1)]
)
)
def test_save_date_range(self, date_range):
booking = self.create_booking(date_range)
assert booking.during.lower == date_range[0]
assert booking.during.upper == date_range[1]
def test_nullify_date_range(self):
booking = self.Booking(
during=intervals.DateInterval(
[datetime(2015, 1, 1), datetime(2015, 1, 3)]
)
)
self.session.add(booking)
self.session.commit()
booking = self.session.query(self.Booking).first()
booking.during = None
self.session.commit()
booking = self.session.query(self.Booking).first()
assert booking.during is None
def test_integer_coercion(self):
booking = self.Booking(during=datetime(2015, 1, 1))
assert booking.during.lower == datetime(2015, 1, 1)
assert booking.during.upper == datetime(2015, 1, 1)
class TestDateRangeOnPostgres(DateRangeTestCase):
dns = 'postgres://postgres@localhost/sqlalchemy_utils_test'
@mark.parametrize(
('date_range', 'length'),
(
(
[datetime(2015, 1, 1), datetime(2015, 1, 3)],
timedelta(days=2)
),
(
[datetime(2015, 1, 1), datetime(2015, 1, 1)],
timedelta(days=0)
),
([-inf, datetime(2015, 1, 1)], None),
([datetime(2015, 1, 1), inf], None),
)
)
def test_length(self, date_range, length):
self.create_booking(date_range)
query = (
self.session.query(self.Booking.during.length)
)
assert query.scalar() == length
|
