mirror of
https://github.com/django/django.git
synced 2024-11-27 17:16:33 +01:00
63 lines
2.5 KiB
Python
63 lines
2.5 KiB
Python
from django.test import TestCase
|
|
|
|
from .models import DumbCategory, NamedCategory, ProxyCategory
|
|
|
|
|
|
class ContainsTests(TestCase):
|
|
@classmethod
|
|
def setUpTestData(cls):
|
|
cls.category = DumbCategory.objects.create()
|
|
cls.proxy_category = ProxyCategory.objects.create()
|
|
|
|
def test_unsaved_obj(self):
|
|
msg = "QuerySet.contains() cannot be used on unsaved objects."
|
|
with self.assertRaisesMessage(ValueError, msg):
|
|
DumbCategory.objects.contains(DumbCategory())
|
|
|
|
def test_obj_type(self):
|
|
msg = "'obj' must be a model instance."
|
|
with self.assertRaisesMessage(TypeError, msg):
|
|
DumbCategory.objects.contains(object())
|
|
|
|
def test_values(self):
|
|
msg = "Cannot call QuerySet.contains() after .values() or .values_list()."
|
|
with self.assertRaisesMessage(TypeError, msg):
|
|
DumbCategory.objects.values_list("pk").contains(self.category)
|
|
with self.assertRaisesMessage(TypeError, msg):
|
|
DumbCategory.objects.values("pk").contains(self.category)
|
|
|
|
def test_basic(self):
|
|
with self.assertNumQueries(1):
|
|
self.assertIs(DumbCategory.objects.contains(self.category), True)
|
|
# QuerySet.contains() doesn't evaluate a queryset.
|
|
with self.assertNumQueries(1):
|
|
self.assertIs(DumbCategory.objects.contains(self.category), True)
|
|
|
|
def test_evaluated_queryset(self):
|
|
qs = DumbCategory.objects.all()
|
|
proxy_qs = ProxyCategory.objects.all()
|
|
# Evaluate querysets.
|
|
list(qs)
|
|
list(proxy_qs)
|
|
with self.assertNumQueries(0):
|
|
self.assertIs(qs.contains(self.category), True)
|
|
self.assertIs(qs.contains(self.proxy_category), True)
|
|
self.assertIs(proxy_qs.contains(self.category), True)
|
|
self.assertIs(proxy_qs.contains(self.proxy_category), True)
|
|
|
|
def test_proxy_model(self):
|
|
with self.assertNumQueries(1):
|
|
self.assertIs(DumbCategory.objects.contains(self.proxy_category), True)
|
|
with self.assertNumQueries(1):
|
|
self.assertIs(ProxyCategory.objects.contains(self.category), True)
|
|
|
|
def test_wrong_model(self):
|
|
qs = DumbCategory.objects.all()
|
|
named_category = NamedCategory(name="category")
|
|
with self.assertNumQueries(0):
|
|
self.assertIs(qs.contains(named_category), False)
|
|
# Evaluate the queryset.
|
|
list(qs)
|
|
with self.assertNumQueries(0):
|
|
self.assertIs(qs.contains(named_category), False)
|