def test_10_discount_validation(self):
"""Test discount validity periods"""
order = self.create_order()
d = Discount(
is_active=False,
valid_from=date(2100, 1, 1), # far future date
valid_until=None,
)
try:
d.validate(order)
except ValidationError as e:
self.assertEqual(len(e.messages), 2)
d.is_active = True
d.valid_until = date(2000, 1, 1)
try:
d.validate(order)
except ValidationError as e:
self.assertEqual(len(e.messages), 2)
