mirror of
https://github.com/django/django.git
synced 2024-12-23 17:46:27 +00:00
383 lines
14 KiB
Python
383 lines
14 KiB
Python
from __future__ import absolute_import, unicode_literals
|
|
import copy
|
|
|
|
from django.conf import settings
|
|
from django.contrib import admin
|
|
from django.contrib.contenttypes.models import ContentType
|
|
from django.core import management
|
|
from django.core.exceptions import FieldError
|
|
from django.db import models, DEFAULT_DB_ALIAS
|
|
from django.db.models import signals
|
|
from django.db.models.loading import cache
|
|
from django.test import TestCase
|
|
|
|
|
|
from .models import (MyPerson, Person, StatusPerson, LowerStatusPerson,
|
|
MyPersonProxy, Abstract, OtherPerson, User, UserProxy, UserProxyProxy,
|
|
Country, State, StateProxy, TrackerUser, BaseUser, Bug, ProxyTrackerUser,
|
|
Improvement, ProxyProxyBug, ProxyBug, ProxyImprovement, Issue)
|
|
|
|
|
|
class ProxyModelTests(TestCase):
|
|
def test_same_manager_queries(self):
|
|
"""
|
|
The MyPerson model should be generating the same database queries as
|
|
the Person model (when the same manager is used in each case).
|
|
"""
|
|
my_person_sql = MyPerson.other.all().query.get_compiler(
|
|
DEFAULT_DB_ALIAS).as_sql()
|
|
person_sql = Person.objects.order_by("name").query.get_compiler(
|
|
DEFAULT_DB_ALIAS).as_sql()
|
|
self.assertEqual(my_person_sql, person_sql)
|
|
|
|
def test_inheretance_new_table(self):
|
|
"""
|
|
The StatusPerson models should have its own table (it's using ORM-level
|
|
inheritance).
|
|
"""
|
|
sp_sql = StatusPerson.objects.all().query.get_compiler(
|
|
DEFAULT_DB_ALIAS).as_sql()
|
|
p_sql = Person.objects.all().query.get_compiler(
|
|
DEFAULT_DB_ALIAS).as_sql()
|
|
self.assertNotEqual(sp_sql, p_sql)
|
|
|
|
def test_basic_proxy(self):
|
|
"""
|
|
Creating a Person makes them accessible through the MyPerson proxy.
|
|
"""
|
|
person = Person.objects.create(name="Foo McBar")
|
|
self.assertEqual(len(Person.objects.all()), 1)
|
|
self.assertEqual(len(MyPerson.objects.all()), 1)
|
|
self.assertEqual(MyPerson.objects.get(name="Foo McBar").id, person.id)
|
|
self.assertFalse(MyPerson.objects.get(id=person.id).has_special_name())
|
|
|
|
def test_no_proxy(self):
|
|
"""
|
|
Person is not proxied by StatusPerson subclass.
|
|
"""
|
|
Person.objects.create(name="Foo McBar")
|
|
self.assertEqual(list(StatusPerson.objects.all()), [])
|
|
|
|
def test_basic_proxy_reverse(self):
|
|
"""
|
|
A new MyPerson also shows up as a standard Person.
|
|
"""
|
|
MyPerson.objects.create(name="Bazza del Frob")
|
|
self.assertEqual(len(MyPerson.objects.all()), 1)
|
|
self.assertEqual(len(Person.objects.all()), 1)
|
|
|
|
LowerStatusPerson.objects.create(status="low", name="homer")
|
|
lsps = [lsp.name for lsp in LowerStatusPerson.objects.all()]
|
|
self.assertEqual(lsps, ["homer"])
|
|
|
|
def test_correct_type_proxy_of_proxy(self):
|
|
"""
|
|
Correct type when querying a proxy of proxy
|
|
"""
|
|
Person.objects.create(name="Foo McBar")
|
|
MyPerson.objects.create(name="Bazza del Frob")
|
|
LowerStatusPerson.objects.create(status="low", name="homer")
|
|
pp = sorted([mpp.name for mpp in MyPersonProxy.objects.all()])
|
|
self.assertEqual(pp, ['Bazza del Frob', 'Foo McBar', 'homer'])
|
|
|
|
def test_proxy_included_in_ancestors(self):
|
|
"""
|
|
Proxy models are included in the ancestors for a model's DoesNotExist
|
|
and MultipleObjectsReturned
|
|
"""
|
|
Person.objects.create(name="Foo McBar")
|
|
MyPerson.objects.create(name="Bazza del Frob")
|
|
LowerStatusPerson.objects.create(status="low", name="homer")
|
|
max_id = Person.objects.aggregate(max_id=models.Max('id'))['max_id']
|
|
|
|
self.assertRaises(Person.DoesNotExist,
|
|
MyPersonProxy.objects.get,
|
|
name='Zathras'
|
|
)
|
|
self.assertRaises(Person.MultipleObjectsReturned,
|
|
MyPersonProxy.objects.get,
|
|
id__lt=max_id + 1
|
|
)
|
|
self.assertRaises(Person.DoesNotExist,
|
|
StatusPerson.objects.get,
|
|
name='Zathras'
|
|
)
|
|
|
|
sp1 = StatusPerson.objects.create(name='Bazza Jr.')
|
|
sp2 = StatusPerson.objects.create(name='Foo Jr.')
|
|
max_id = Person.objects.aggregate(max_id=models.Max('id'))['max_id']
|
|
|
|
self.assertRaises(Person.MultipleObjectsReturned,
|
|
StatusPerson.objects.get,
|
|
id__lt=max_id + 1
|
|
)
|
|
|
|
def test_abc(self):
|
|
"""
|
|
All base classes must be non-abstract
|
|
"""
|
|
def build_abc():
|
|
class NoAbstract(Abstract):
|
|
class Meta:
|
|
proxy = True
|
|
self.assertRaises(TypeError, build_abc)
|
|
|
|
def test_no_cbc(self):
|
|
"""
|
|
The proxy must actually have one concrete base class
|
|
"""
|
|
def build_no_cbc():
|
|
class TooManyBases(Person, Abstract):
|
|
class Meta:
|
|
proxy = True
|
|
self.assertRaises(TypeError, build_no_cbc)
|
|
|
|
def test_no_base_classes(self):
|
|
def build_no_base_classes():
|
|
class NoBaseClasses(models.Model):
|
|
class Meta:
|
|
proxy = True
|
|
self.assertRaises(TypeError, build_no_base_classes)
|
|
|
|
def test_new_fields(self):
|
|
def build_new_fields():
|
|
class NoNewFields(Person):
|
|
newfield = models.BooleanField()
|
|
|
|
class Meta:
|
|
proxy = True
|
|
self.assertRaises(FieldError, build_new_fields)
|
|
|
|
def test_swappable(self):
|
|
try:
|
|
# This test adds dummy applications to the app cache. These
|
|
# need to be removed in order to prevent bad interactions
|
|
# with the flush operation in other tests.
|
|
old_app_models = copy.deepcopy(cache.app_models)
|
|
old_app_store = copy.deepcopy(cache.app_store)
|
|
|
|
settings.TEST_SWAPPABLE_MODEL = 'proxy_models.AlternateModel'
|
|
|
|
class SwappableModel(models.Model):
|
|
|
|
class Meta:
|
|
swappable = 'TEST_SWAPPABLE_MODEL'
|
|
|
|
class AlternateModel(models.Model):
|
|
pass
|
|
|
|
# You can't proxy a swapped model
|
|
with self.assertRaises(TypeError):
|
|
class ProxyModel(SwappableModel):
|
|
|
|
class Meta:
|
|
proxy = True
|
|
finally:
|
|
del settings.TEST_SWAPPABLE_MODEL
|
|
cache.app_models = old_app_models
|
|
cache.app_store = old_app_store
|
|
|
|
def test_myperson_manager(self):
|
|
Person.objects.create(name="fred")
|
|
Person.objects.create(name="wilma")
|
|
Person.objects.create(name="barney")
|
|
|
|
resp = [p.name for p in MyPerson.objects.all()]
|
|
self.assertEqual(resp, ['barney', 'fred'])
|
|
|
|
resp = [p.name for p in MyPerson._default_manager.all()]
|
|
self.assertEqual(resp, ['barney', 'fred'])
|
|
|
|
def test_otherperson_manager(self):
|
|
Person.objects.create(name="fred")
|
|
Person.objects.create(name="wilma")
|
|
Person.objects.create(name="barney")
|
|
|
|
resp = [p.name for p in OtherPerson.objects.all()]
|
|
self.assertEqual(resp, ['barney', 'wilma'])
|
|
|
|
resp = [p.name for p in OtherPerson.excluder.all()]
|
|
self.assertEqual(resp, ['barney', 'fred'])
|
|
|
|
resp = [p.name for p in OtherPerson._default_manager.all()]
|
|
self.assertEqual(resp, ['barney', 'wilma'])
|
|
|
|
def test_permissions_created(self):
|
|
from django.contrib.auth.models import Permission
|
|
try:
|
|
Permission.objects.get(name="May display users information")
|
|
except Permission.DoesNotExist:
|
|
self.fail("The permission 'May display users information' has not been created")
|
|
|
|
def test_proxy_model_signals(self):
|
|
"""
|
|
Test save signals for proxy models
|
|
"""
|
|
output = []
|
|
|
|
def make_handler(model, event):
|
|
def _handler(*args, **kwargs):
|
|
output.append('%s %s save' % (model, event))
|
|
return _handler
|
|
|
|
h1 = make_handler('MyPerson', 'pre')
|
|
h2 = make_handler('MyPerson', 'post')
|
|
h3 = make_handler('Person', 'pre')
|
|
h4 = make_handler('Person', 'post')
|
|
|
|
signals.pre_save.connect(h1, sender=MyPerson)
|
|
signals.post_save.connect(h2, sender=MyPerson)
|
|
signals.pre_save.connect(h3, sender=Person)
|
|
signals.post_save.connect(h4, sender=Person)
|
|
|
|
dino = MyPerson.objects.create(name="dino")
|
|
self.assertEqual(output, [
|
|
'MyPerson pre save',
|
|
'MyPerson post save'
|
|
])
|
|
|
|
output = []
|
|
|
|
h5 = make_handler('MyPersonProxy', 'pre')
|
|
h6 = make_handler('MyPersonProxy', 'post')
|
|
|
|
signals.pre_save.connect(h5, sender=MyPersonProxy)
|
|
signals.post_save.connect(h6, sender=MyPersonProxy)
|
|
|
|
dino = MyPersonProxy.objects.create(name="pebbles")
|
|
|
|
self.assertEqual(output, [
|
|
'MyPersonProxy pre save',
|
|
'MyPersonProxy post save'
|
|
])
|
|
|
|
signals.pre_save.disconnect(h1, sender=MyPerson)
|
|
signals.post_save.disconnect(h2, sender=MyPerson)
|
|
signals.pre_save.disconnect(h3, sender=Person)
|
|
signals.post_save.disconnect(h4, sender=Person)
|
|
signals.pre_save.disconnect(h5, sender=MyPersonProxy)
|
|
signals.post_save.disconnect(h6, sender=MyPersonProxy)
|
|
|
|
def test_content_type(self):
|
|
ctype = ContentType.objects.get_for_model
|
|
self.assertTrue(ctype(Person) is ctype(OtherPerson))
|
|
|
|
def test_user_userproxy_userproxyproxy(self):
|
|
User.objects.create(name='Bruce')
|
|
|
|
resp = [u.name for u in User.objects.all()]
|
|
self.assertEqual(resp, ['Bruce'])
|
|
|
|
resp = [u.name for u in UserProxy.objects.all()]
|
|
self.assertEqual(resp, ['Bruce'])
|
|
|
|
resp = [u.name for u in UserProxyProxy.objects.all()]
|
|
self.assertEqual(resp, ['Bruce'])
|
|
|
|
def test_proxy_for_model(self):
|
|
self.assertEqual(UserProxy, UserProxyProxy._meta.proxy_for_model)
|
|
|
|
def test_concrete_model(self):
|
|
self.assertEqual(User, UserProxyProxy._meta.concrete_model)
|
|
|
|
def test_proxy_delete(self):
|
|
"""
|
|
Proxy objects can be deleted
|
|
"""
|
|
User.objects.create(name='Bruce')
|
|
u2 = UserProxy.objects.create(name='George')
|
|
|
|
resp = [u.name for u in UserProxy.objects.all()]
|
|
self.assertEqual(resp, ['Bruce', 'George'])
|
|
|
|
u2.delete()
|
|
|
|
resp = [u.name for u in UserProxy.objects.all()]
|
|
self.assertEqual(resp, ['Bruce'])
|
|
|
|
def test_select_related(self):
|
|
"""
|
|
We can still use `select_related()` to include related models in our
|
|
querysets.
|
|
"""
|
|
country = Country.objects.create(name='Australia')
|
|
state = State.objects.create(name='New South Wales', country=country)
|
|
|
|
resp = [s.name for s in State.objects.select_related()]
|
|
self.assertEqual(resp, ['New South Wales'])
|
|
|
|
resp = [s.name for s in StateProxy.objects.select_related()]
|
|
self.assertEqual(resp, ['New South Wales'])
|
|
|
|
self.assertEqual(StateProxy.objects.get(name='New South Wales').name,
|
|
'New South Wales')
|
|
|
|
resp = StateProxy.objects.select_related().get(name='New South Wales')
|
|
self.assertEqual(resp.name, 'New South Wales')
|
|
|
|
def test_proxy_bug(self):
|
|
contributor = TrackerUser.objects.create(name='Contributor',
|
|
status='contrib')
|
|
someone = BaseUser.objects.create(name='Someone')
|
|
Bug.objects.create(summary='fix this', version='1.1beta',
|
|
assignee=contributor, reporter=someone)
|
|
pcontributor = ProxyTrackerUser.objects.create(name='OtherContributor',
|
|
status='proxy')
|
|
Improvement.objects.create(summary='improve that', version='1.1beta',
|
|
assignee=contributor, reporter=pcontributor,
|
|
associated_bug=ProxyProxyBug.objects.all()[0])
|
|
|
|
# Related field filter on proxy
|
|
resp = ProxyBug.objects.get(version__icontains='beta')
|
|
self.assertEqual(repr(resp), '<ProxyBug: ProxyBug:fix this>')
|
|
|
|
# Select related + filter on proxy
|
|
resp = ProxyBug.objects.select_related().get(version__icontains='beta')
|
|
self.assertEqual(repr(resp), '<ProxyBug: ProxyBug:fix this>')
|
|
|
|
# Proxy of proxy, select_related + filter
|
|
resp = ProxyProxyBug.objects.select_related().get(
|
|
version__icontains='beta'
|
|
)
|
|
self.assertEqual(repr(resp), '<ProxyProxyBug: ProxyProxyBug:fix this>')
|
|
|
|
# Select related + filter on a related proxy field
|
|
resp = ProxyImprovement.objects.select_related().get(
|
|
reporter__name__icontains='butor'
|
|
)
|
|
self.assertEqual(repr(resp),
|
|
'<ProxyImprovement: ProxyImprovement:improve that>'
|
|
)
|
|
|
|
# Select related + filter on a related proxy of proxy field
|
|
resp = ProxyImprovement.objects.select_related().get(
|
|
associated_bug__summary__icontains='fix'
|
|
)
|
|
self.assertEqual(repr(resp),
|
|
'<ProxyImprovement: ProxyImprovement:improve that>'
|
|
)
|
|
|
|
def test_proxy_load_from_fixture(self):
|
|
management.call_command('loaddata', 'mypeople.json', verbosity=0, commit=False)
|
|
p = MyPerson.objects.get(pk=100)
|
|
self.assertEqual(p.name, 'Elvis Presley')
|
|
|
|
|
|
class ProxyModelAdminTests(TestCase):
|
|
fixtures = ['myhorses']
|
|
|
|
def test_cascade_delete_proxy_model_admin_warning(self):
|
|
"""
|
|
Test if admin gives warning about cascade deleting models referenced
|
|
to concrete model by deleting proxy object.
|
|
"""
|
|
tracker_user = TrackerUser.objects.all()[0]
|
|
base_user = BaseUser.objects.all()[0]
|
|
issue = Issue.objects.all()[0]
|
|
with self.assertNumQueries(7):
|
|
collector = admin.util.NestedObjects('default')
|
|
collector.collect(ProxyTrackerUser.objects.all())
|
|
self.assertTrue(tracker_user in collector.edges.get(None, ()))
|
|
self.assertTrue(base_user in collector.edges.get(None, ()))
|
|
self.assertTrue(issue in collector.edges.get(tracker_user, ()))
|