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from django.db.models import F, Q
from django.test import SimpleTestCase
class QTests(SimpleTestCase):
def test_combine_and_empty(self):
q = Q(x=1)
self.assertEqual(q & Q(), q)
self.assertEqual(Q() & q, q)
def test_combine_and_both_empty(self):
self.assertEqual(Q() & Q(), Q())
def test_combine_or_empty(self):
q = Q(x=1)
self.assertEqual(q | Q(), q)
self.assertEqual(Q() | q, q)
def test_combine_or_both_empty(self):
self.assertEqual(Q() | Q(), Q())
def test_combine_not_q_object(self):
obj = object()
q = Q(x=1)
with self.assertRaisesMessage(TypeError, str(obj)):
q | obj
with self.assertRaisesMessage(TypeError, str(obj)):
q & obj
def test_deconstruct(self):
q = Q(price__gt=F('discounted_price'))
path, args, kwargs = q.deconstruct()
self.assertEqual(path, 'django.db.models.Q')
self.assertEqual(args, ())
self.assertEqual(kwargs, {'price__gt': F('discounted_price')})
def test_deconstruct_negated(self):
q = ~Q(price__gt=F('discounted_price'))
path, args, kwargs = q.deconstruct()
self.assertEqual(args, ())
self.assertEqual(kwargs, {
'price__gt': F('discounted_price'),
'_negated': True,
})
def test_deconstruct_or(self):
q1 = Q(price__gt=F('discounted_price'))
q2 = Q(price=F('discounted_price'))
q = q1 | q2
path, args, kwargs = q.deconstruct()
self.assertEqual(args, (
('price__gt', F('discounted_price')),
('price', F('discounted_price')),
))
self.assertEqual(kwargs, {'_connector': 'OR'})
def test_deconstruct_and(self):
q1 = Q(price__gt=F('discounted_price'))
q2 = Q(price=F('discounted_price'))
q = q1 & q2
path, args, kwargs = q.deconstruct()
self.assertEqual(args, (
('price__gt', F('discounted_price')),
('price', F('discounted_price')),
))
self.assertEqual(kwargs, {})
def test_deconstruct_multiple_kwargs(self):
q = Q(price__gt=F('discounted_price'), price=F('discounted_price'))
path, args, kwargs = q.deconstruct()
self.assertEqual(args, (
('price', F('discounted_price')),
('price__gt', F('discounted_price')),
))
self.assertEqual(kwargs, {})
def test_deconstruct_nested(self):
q = Q(Q(price__gt=F('discounted_price')))
path, args, kwargs = q.deconstruct()
self.assertEqual(args, (Q(price__gt=F('discounted_price')),))
self.assertEqual(kwargs, {})
def test_reconstruct(self):
q = Q(price__gt=F('discounted_price'))
path, args, kwargs = q.deconstruct()
self.assertEqual(Q(*args, **kwargs), q)
def test_reconstruct_negated(self):
q = ~Q(price__gt=F('discounted_price'))
path, args, kwargs = q.deconstruct()
self.assertEqual(Q(*args, **kwargs), q)
def test_reconstruct_or(self):
q1 = Q(price__gt=F('discounted_price'))
q2 = Q(price=F('discounted_price'))
q = q1 | q2
path, args, kwargs = q.deconstruct()
self.assertEqual(Q(*args, **kwargs), q)
def test_reconstruct_and(self):
q1 = Q(price__gt=F('discounted_price'))
q2 = Q(price=F('discounted_price'))
q = q1 & q2
path, args, kwargs = q.deconstruct()
self.assertEqual(Q(*args, **kwargs), q)
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