mirror of https://github.com/django/django.git
133 lines
4.3 KiB
Python
133 lines
4.3 KiB
Python
from django.db.models import Exists, F, OuterRef, Q
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from django.test import SimpleTestCase
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from .models import Tag
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class QTests(SimpleTestCase):
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def test_combine_and_empty(self):
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q = Q(x=1)
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self.assertEqual(q & Q(), q)
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self.assertEqual(Q() & q, q)
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q = Q(x__in={}.keys())
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self.assertEqual(q & Q(), q)
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self.assertEqual(Q() & q, q)
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def test_combine_and_both_empty(self):
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self.assertEqual(Q() & Q(), Q())
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def test_combine_or_empty(self):
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q = Q(x=1)
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self.assertEqual(q | Q(), q)
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self.assertEqual(Q() | q, q)
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q = Q(x__in={}.keys())
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self.assertEqual(q | Q(), q)
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self.assertEqual(Q() | q, q)
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def test_combine_empty_copy(self):
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base_q = Q(x=1)
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tests = [
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base_q | Q(),
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Q() | base_q,
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base_q & Q(),
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Q() & base_q,
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]
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for i, q in enumerate(tests):
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with self.subTest(i=i):
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self.assertEqual(q, base_q)
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self.assertIsNot(q, base_q)
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def test_combine_or_both_empty(self):
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self.assertEqual(Q() | Q(), Q())
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def test_combine_not_q_object(self):
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obj = object()
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q = Q(x=1)
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with self.assertRaisesMessage(TypeError, str(obj)):
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q | obj
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with self.assertRaisesMessage(TypeError, str(obj)):
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q & obj
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def test_deconstruct(self):
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q = Q(price__gt=F('discounted_price'))
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path, args, kwargs = q.deconstruct()
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self.assertEqual(path, 'django.db.models.Q')
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self.assertEqual(args, (('price__gt', F('discounted_price')),))
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self.assertEqual(kwargs, {})
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def test_deconstruct_negated(self):
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q = ~Q(price__gt=F('discounted_price'))
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path, args, kwargs = q.deconstruct()
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self.assertEqual(args, (('price__gt', F('discounted_price')),))
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self.assertEqual(kwargs, {'_negated': True})
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def test_deconstruct_or(self):
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q1 = Q(price__gt=F('discounted_price'))
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q2 = Q(price=F('discounted_price'))
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q = q1 | q2
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path, args, kwargs = q.deconstruct()
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self.assertEqual(args, (
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('price__gt', F('discounted_price')),
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('price', F('discounted_price')),
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))
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self.assertEqual(kwargs, {'_connector': 'OR'})
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def test_deconstruct_and(self):
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q1 = Q(price__gt=F('discounted_price'))
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q2 = Q(price=F('discounted_price'))
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q = q1 & q2
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path, args, kwargs = q.deconstruct()
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self.assertEqual(args, (
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('price__gt', F('discounted_price')),
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('price', F('discounted_price')),
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))
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self.assertEqual(kwargs, {})
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def test_deconstruct_multiple_kwargs(self):
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q = Q(price__gt=F('discounted_price'), price=F('discounted_price'))
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path, args, kwargs = q.deconstruct()
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self.assertEqual(args, (
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('price', F('discounted_price')),
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('price__gt', F('discounted_price')),
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))
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self.assertEqual(kwargs, {})
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def test_deconstruct_nested(self):
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q = Q(Q(price__gt=F('discounted_price')))
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path, args, kwargs = q.deconstruct()
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self.assertEqual(args, (Q(price__gt=F('discounted_price')),))
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self.assertEqual(kwargs, {})
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def test_deconstruct_boolean_expression(self):
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tagged = Tag.objects.filter(category=OuterRef('pk'))
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q = Q(Exists(tagged))
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_, args, kwargs = q.deconstruct()
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self.assertEqual(args, (Exists(tagged),))
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self.assertEqual(kwargs, {})
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def test_reconstruct(self):
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q = Q(price__gt=F('discounted_price'))
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path, args, kwargs = q.deconstruct()
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self.assertEqual(Q(*args, **kwargs), q)
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def test_reconstruct_negated(self):
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q = ~Q(price__gt=F('discounted_price'))
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path, args, kwargs = q.deconstruct()
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self.assertEqual(Q(*args, **kwargs), q)
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def test_reconstruct_or(self):
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q1 = Q(price__gt=F('discounted_price'))
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q2 = Q(price=F('discounted_price'))
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q = q1 | q2
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path, args, kwargs = q.deconstruct()
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self.assertEqual(Q(*args, **kwargs), q)
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def test_reconstruct_and(self):
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q1 = Q(price__gt=F('discounted_price'))
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q2 = Q(price=F('discounted_price'))
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q = q1 & q2
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path, args, kwargs = q.deconstruct()
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self.assertEqual(Q(*args, **kwargs), q)
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