from django.contrib import admin from django.contrib.auth.models import User as AuthUser from django.contrib.contenttypes.models import ContentType from django.core import checks, management from django.db import DEFAULT_DB_ALIAS, models from django.db.models import signals from django.test import TestCase, override_settings from django.test.utils import isolate_apps from django.urls import reverse from .admin import admin as force_admin_model_registration # NOQA from .models import ( Abstract, BaseUser, Bug, Country, Improvement, Issue, LowerStatusPerson, MultiUserProxy, MyPerson, MyPersonProxy, OtherPerson, Person, ProxyBug, ProxyImprovement, ProxyProxyBug, ProxyTrackerUser, State, StateProxy, StatusPerson, TrackerUser, User, UserProxy, UserProxyProxy, ) 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_inheritance_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'] with self.assertRaises(Person.DoesNotExist): MyPersonProxy.objects.get(name='Zathras') with self.assertRaises(Person.MultipleObjectsReturned): MyPersonProxy.objects.get(id__lt=max_id + 1) with self.assertRaises(Person.DoesNotExist): StatusPerson.objects.get(name='Zathras') StatusPerson.objects.create(name='Bazza Jr.') StatusPerson.objects.create(name='Foo Jr.') max_id = Person.objects.aggregate(max_id=models.Max('id'))['max_id'] with self.assertRaises(Person.MultipleObjectsReturned): StatusPerson.objects.get(id__lt=max_id + 1) def test_abstract_base_with_model_fields(self): msg = "Abstract base class containing model fields not permitted for proxy model 'NoAbstract'." with self.assertRaisesMessage(TypeError, msg): class NoAbstract(Abstract): class Meta: proxy = True def test_too_many_concrete_classes(self): msg = "Proxy model 'TooManyBases' has more than one non-abstract model base class." with self.assertRaisesMessage(TypeError, msg): class TooManyBases(User, Person): class Meta: proxy = True def test_no_base_classes(self): msg = "Proxy model 'NoBaseClasses' has no non-abstract model base class." with self.assertRaisesMessage(TypeError, msg): class NoBaseClasses(models.Model): class Meta: proxy = True @isolate_apps('proxy_models') def test_new_fields(self): class NoNewFields(Person): newfield = models.BooleanField() class Meta: proxy = True errors = NoNewFields.check() expected = [ checks.Error( "Proxy model 'NoNewFields' contains model fields.", id='models.E017', ) ] self.assertEqual(errors, expected) @override_settings(TEST_SWAPPABLE_MODEL='proxy_models.AlternateModel') @isolate_apps('proxy_models') def test_swappable(self): 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 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 Permission.objects.get(name="May display users information") 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) 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) 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.assertIs(ctype(Person), ctype(OtherPerson)) def test_user_proxy_models(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']) self.assertEqual([u.name for u in MultiUserProxy.objects.all()], ['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_proxy_update(self): user = User.objects.create(name='Bruce') with self.assertNumQueries(1): UserProxy.objects.filter(id=user.id).update(name='George') user.refresh_from_db() self.assertEqual(user.name, 'George') 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.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_filter_proxy_relation_reverse(self): tu = TrackerUser.objects.create(name='Contributor', status='contrib') ptu = ProxyTrackerUser.objects.get() issue = Issue.objects.create(assignee=tu) self.assertEqual(tu.issues.get(), issue) self.assertEqual(ptu.issues.get(), issue) self.assertSequenceEqual(TrackerUser.objects.filter(issues=issue), [tu]) self.assertSequenceEqual(ProxyTrackerUser.objects.filter(issues=issue), [ptu]) def test_proxy_bug(self): contributor = ProxyTrackerUser.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), '') # Select related + filter on proxy resp = ProxyBug.objects.select_related().get(version__icontains='beta') self.assertEqual(repr(resp), '') # Proxy of proxy, select_related + filter resp = ProxyProxyBug.objects.select_related().get( version__icontains='beta' ) self.assertEqual(repr(resp), '') # Select related + filter on a related proxy field resp = ProxyImprovement.objects.select_related().get( reporter__name__icontains='butor' ) self.assertEqual( repr(resp), '' ) # 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), '' ) def test_proxy_load_from_fixture(self): management.call_command('loaddata', 'mypeople.json', verbosity=0) p = MyPerson.objects.get(pk=100) self.assertEqual(p.name, 'Elvis Presley') def test_eq(self): self.assertEqual(MyPerson(id=100), Person(id=100)) @override_settings(ROOT_URLCONF='proxy_models.urls') class ProxyModelAdminTests(TestCase): @classmethod def setUpTestData(cls): cls.superuser = AuthUser.objects.create(is_superuser=True, is_staff=True) cls.tu1 = ProxyTrackerUser.objects.create(name='Django Pony', status='emperor') cls.i1 = Issue.objects.create(summary="Pony's Issue", assignee=cls.tu1) 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(6): collector = admin.utils.NestedObjects('default') collector.collect(ProxyTrackerUser.objects.all()) self.assertIn(tracker_user, collector.edges.get(None, ())) self.assertIn(base_user, collector.edges.get(None, ())) self.assertIn(issue, collector.edges.get(tracker_user, ())) def test_delete_str_in_model_admin(self): """ Test if the admin delete page shows the correct string representation for a proxy model. """ user = TrackerUser.objects.get(name='Django Pony') proxy = ProxyTrackerUser.objects.get(name='Django Pony') user_str = 'Tracker user: %s' % ( reverse('admin_proxy:proxy_models_trackeruser_change', args=(user.pk,)), user ) proxy_str = 'Proxy tracker user: %s' % ( reverse('admin_proxy:proxy_models_proxytrackeruser_change', args=(proxy.pk,)), proxy ) self.client.force_login(self.superuser) response = self.client.get(reverse('admin_proxy:proxy_models_trackeruser_delete', args=(user.pk,))) delete_str = response.context['deleted_objects'][0] self.assertEqual(delete_str, user_str) response = self.client.get(reverse('admin_proxy:proxy_models_proxytrackeruser_delete', args=(proxy.pk,))) delete_str = response.context['deleted_objects'][0] self.assertEqual(delete_str, proxy_str)