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463 lines
16 KiB
Python
463 lines
16 KiB
Python
from django.contrib import admin
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from django.contrib.auth.models import User as AuthUser
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from django.contrib.contenttypes.models import ContentType
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from django.core import checks, management
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from django.db import DEFAULT_DB_ALIAS, models
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from django.db.models import signals
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from django.test import TestCase, override_settings
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from django.test.utils import isolate_apps
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from django.urls import reverse
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from .admin import admin as force_admin_model_registration # NOQA
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from .models import (
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Abstract,
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BaseUser,
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Bug,
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Country,
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Improvement,
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Issue,
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LowerStatusPerson,
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MultiUserProxy,
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MyPerson,
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MyPersonProxy,
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OtherPerson,
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Person,
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ProxyBug,
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ProxyImprovement,
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ProxyProxyBug,
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ProxyTrackerUser,
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State,
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StateProxy,
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StatusPerson,
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TrackerUser,
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User,
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UserProxy,
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UserProxyProxy,
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)
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class ProxyModelTests(TestCase):
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def test_same_manager_queries(self):
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"""
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The MyPerson model should be generating the same database queries as
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the Person model (when the same manager is used in each case).
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"""
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my_person_sql = (
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MyPerson.other.all().query.get_compiler(DEFAULT_DB_ALIAS).as_sql()
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)
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person_sql = (
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Person.objects.order_by("name")
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.query.get_compiler(DEFAULT_DB_ALIAS)
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.as_sql()
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)
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self.assertEqual(my_person_sql, person_sql)
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def test_inheritance_new_table(self):
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"""
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The StatusPerson models should have its own table (it's using ORM-level
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inheritance).
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"""
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sp_sql = (
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StatusPerson.objects.all().query.get_compiler(DEFAULT_DB_ALIAS).as_sql()
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)
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p_sql = Person.objects.all().query.get_compiler(DEFAULT_DB_ALIAS).as_sql()
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self.assertNotEqual(sp_sql, p_sql)
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def test_basic_proxy(self):
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"""
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Creating a Person makes them accessible through the MyPerson proxy.
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"""
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person = Person.objects.create(name="Foo McBar")
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self.assertEqual(len(Person.objects.all()), 1)
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self.assertEqual(len(MyPerson.objects.all()), 1)
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self.assertEqual(MyPerson.objects.get(name="Foo McBar").id, person.id)
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self.assertFalse(MyPerson.objects.get(id=person.id).has_special_name())
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def test_no_proxy(self):
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"""
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Person is not proxied by StatusPerson subclass.
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"""
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Person.objects.create(name="Foo McBar")
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self.assertEqual(list(StatusPerson.objects.all()), [])
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def test_basic_proxy_reverse(self):
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"""
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A new MyPerson also shows up as a standard Person.
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"""
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MyPerson.objects.create(name="Bazza del Frob")
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self.assertEqual(len(MyPerson.objects.all()), 1)
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self.assertEqual(len(Person.objects.all()), 1)
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LowerStatusPerson.objects.create(status="low", name="homer")
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lsps = [lsp.name for lsp in LowerStatusPerson.objects.all()]
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self.assertEqual(lsps, ["homer"])
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def test_correct_type_proxy_of_proxy(self):
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"""
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Correct type when querying a proxy of proxy
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"""
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Person.objects.create(name="Foo McBar")
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MyPerson.objects.create(name="Bazza del Frob")
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LowerStatusPerson.objects.create(status="low", name="homer")
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pp = sorted(mpp.name for mpp in MyPersonProxy.objects.all())
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self.assertEqual(pp, ["Bazza del Frob", "Foo McBar", "homer"])
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def test_proxy_included_in_ancestors(self):
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"""
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Proxy models are included in the ancestors for a model's DoesNotExist
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and MultipleObjectsReturned
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"""
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Person.objects.create(name="Foo McBar")
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MyPerson.objects.create(name="Bazza del Frob")
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LowerStatusPerson.objects.create(status="low", name="homer")
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max_id = Person.objects.aggregate(max_id=models.Max("id"))["max_id"]
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with self.assertRaises(Person.DoesNotExist):
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MyPersonProxy.objects.get(name="Zathras")
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with self.assertRaises(Person.MultipleObjectsReturned):
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MyPersonProxy.objects.get(id__lt=max_id + 1)
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with self.assertRaises(Person.DoesNotExist):
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StatusPerson.objects.get(name="Zathras")
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StatusPerson.objects.create(name="Bazza Jr.")
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StatusPerson.objects.create(name="Foo Jr.")
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max_id = Person.objects.aggregate(max_id=models.Max("id"))["max_id"]
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with self.assertRaises(Person.MultipleObjectsReturned):
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StatusPerson.objects.get(id__lt=max_id + 1)
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def test_abstract_base_with_model_fields(self):
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msg = (
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"Abstract base class containing model fields not permitted for proxy model "
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"'NoAbstract'."
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)
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with self.assertRaisesMessage(TypeError, msg):
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class NoAbstract(Abstract):
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class Meta:
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proxy = True
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def test_too_many_concrete_classes(self):
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msg = (
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"Proxy model 'TooManyBases' has more than one non-abstract model base "
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"class."
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)
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with self.assertRaisesMessage(TypeError, msg):
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class TooManyBases(User, Person):
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class Meta:
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proxy = True
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def test_no_base_classes(self):
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msg = "Proxy model 'NoBaseClasses' has no non-abstract model base class."
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with self.assertRaisesMessage(TypeError, msg):
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class NoBaseClasses(models.Model):
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class Meta:
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proxy = True
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@isolate_apps("proxy_models")
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def test_new_fields(self):
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class NoNewFields(Person):
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newfield = models.BooleanField()
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class Meta:
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proxy = True
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errors = NoNewFields.check()
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expected = [
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checks.Error(
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"Proxy model 'NoNewFields' contains model fields.",
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id="models.E017",
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)
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]
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self.assertEqual(errors, expected)
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@override_settings(TEST_SWAPPABLE_MODEL="proxy_models.AlternateModel")
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@isolate_apps("proxy_models")
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def test_swappable(self):
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class SwappableModel(models.Model):
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class Meta:
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swappable = "TEST_SWAPPABLE_MODEL"
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class AlternateModel(models.Model):
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pass
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# You can't proxy a swapped model
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with self.assertRaises(TypeError):
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class ProxyModel(SwappableModel):
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class Meta:
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proxy = True
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def test_myperson_manager(self):
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Person.objects.create(name="fred")
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Person.objects.create(name="wilma")
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Person.objects.create(name="barney")
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resp = [p.name for p in MyPerson.objects.all()]
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self.assertEqual(resp, ["barney", "fred"])
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resp = [p.name for p in MyPerson._default_manager.all()]
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self.assertEqual(resp, ["barney", "fred"])
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def test_otherperson_manager(self):
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Person.objects.create(name="fred")
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Person.objects.create(name="wilma")
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Person.objects.create(name="barney")
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resp = [p.name for p in OtherPerson.objects.all()]
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self.assertEqual(resp, ["barney", "wilma"])
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resp = [p.name for p in OtherPerson.excluder.all()]
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self.assertEqual(resp, ["barney", "fred"])
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resp = [p.name for p in OtherPerson._default_manager.all()]
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self.assertEqual(resp, ["barney", "wilma"])
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def test_permissions_created(self):
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from django.contrib.auth.models import Permission
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Permission.objects.get(name="May display users information")
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def test_proxy_model_signals(self):
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"""
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Test save signals for proxy models
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"""
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output = []
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def make_handler(model, event):
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def _handler(*args, **kwargs):
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output.append("%s %s save" % (model, event))
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return _handler
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h1 = make_handler("MyPerson", "pre")
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h2 = make_handler("MyPerson", "post")
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h3 = make_handler("Person", "pre")
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h4 = make_handler("Person", "post")
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signals.pre_save.connect(h1, sender=MyPerson)
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signals.post_save.connect(h2, sender=MyPerson)
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signals.pre_save.connect(h3, sender=Person)
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signals.post_save.connect(h4, sender=Person)
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MyPerson.objects.create(name="dino")
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self.assertEqual(output, ["MyPerson pre save", "MyPerson post save"])
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output = []
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h5 = make_handler("MyPersonProxy", "pre")
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h6 = make_handler("MyPersonProxy", "post")
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signals.pre_save.connect(h5, sender=MyPersonProxy)
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signals.post_save.connect(h6, sender=MyPersonProxy)
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MyPersonProxy.objects.create(name="pebbles")
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self.assertEqual(output, ["MyPersonProxy pre save", "MyPersonProxy post save"])
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signals.pre_save.disconnect(h1, sender=MyPerson)
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signals.post_save.disconnect(h2, sender=MyPerson)
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signals.pre_save.disconnect(h3, sender=Person)
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signals.post_save.disconnect(h4, sender=Person)
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signals.pre_save.disconnect(h5, sender=MyPersonProxy)
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signals.post_save.disconnect(h6, sender=MyPersonProxy)
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def test_content_type(self):
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ctype = ContentType.objects.get_for_model
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self.assertIs(ctype(Person), ctype(OtherPerson))
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def test_user_proxy_models(self):
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User.objects.create(name="Bruce")
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resp = [u.name for u in User.objects.all()]
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self.assertEqual(resp, ["Bruce"])
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resp = [u.name for u in UserProxy.objects.all()]
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self.assertEqual(resp, ["Bruce"])
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resp = [u.name for u in UserProxyProxy.objects.all()]
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self.assertEqual(resp, ["Bruce"])
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self.assertEqual([u.name for u in MultiUserProxy.objects.all()], ["Bruce"])
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def test_proxy_for_model(self):
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self.assertEqual(UserProxy, UserProxyProxy._meta.proxy_for_model)
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def test_concrete_model(self):
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self.assertEqual(User, UserProxyProxy._meta.concrete_model)
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def test_proxy_delete(self):
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"""
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Proxy objects can be deleted
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"""
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User.objects.create(name="Bruce")
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u2 = UserProxy.objects.create(name="George")
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resp = [u.name for u in UserProxy.objects.all()]
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self.assertEqual(resp, ["Bruce", "George"])
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u2.delete()
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resp = [u.name for u in UserProxy.objects.all()]
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self.assertEqual(resp, ["Bruce"])
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def test_proxy_update(self):
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user = User.objects.create(name="Bruce")
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with self.assertNumQueries(1):
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UserProxy.objects.filter(id=user.id).update(name="George")
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user.refresh_from_db()
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self.assertEqual(user.name, "George")
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def test_select_related(self):
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"""
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We can still use `select_related()` to include related models in our
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querysets.
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"""
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country = Country.objects.create(name="Australia")
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State.objects.create(name="New South Wales", country=country)
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resp = [s.name for s in State.objects.select_related()]
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self.assertEqual(resp, ["New South Wales"])
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resp = [s.name for s in StateProxy.objects.select_related()]
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self.assertEqual(resp, ["New South Wales"])
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self.assertEqual(
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StateProxy.objects.get(name="New South Wales").name, "New South Wales"
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)
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resp = StateProxy.objects.select_related().get(name="New South Wales")
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self.assertEqual(resp.name, "New South Wales")
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def test_filter_proxy_relation_reverse(self):
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tu = TrackerUser.objects.create(name="Contributor", status="contrib")
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ptu = ProxyTrackerUser.objects.get()
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issue = Issue.objects.create(assignee=tu)
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self.assertEqual(tu.issues.get(), issue)
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self.assertEqual(ptu.issues.get(), issue)
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self.assertSequenceEqual(TrackerUser.objects.filter(issues=issue), [tu])
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self.assertSequenceEqual(ProxyTrackerUser.objects.filter(issues=issue), [ptu])
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def test_proxy_bug(self):
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contributor = ProxyTrackerUser.objects.create(
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name="Contributor", status="contrib"
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)
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someone = BaseUser.objects.create(name="Someone")
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Bug.objects.create(
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summary="fix this",
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version="1.1beta",
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assignee=contributor,
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reporter=someone,
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)
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pcontributor = ProxyTrackerUser.objects.create(
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name="OtherContributor", status="proxy"
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)
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Improvement.objects.create(
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summary="improve that",
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version="1.1beta",
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assignee=contributor,
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reporter=pcontributor,
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associated_bug=ProxyProxyBug.objects.all()[0],
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)
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# Related field filter on proxy
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resp = ProxyBug.objects.get(version__icontains="beta")
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self.assertEqual(repr(resp), "<ProxyBug: ProxyBug:fix this>")
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# Select related + filter on proxy
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resp = ProxyBug.objects.select_related().get(version__icontains="beta")
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self.assertEqual(repr(resp), "<ProxyBug: ProxyBug:fix this>")
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# Proxy of proxy, select_related + filter
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resp = ProxyProxyBug.objects.select_related().get(version__icontains="beta")
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self.assertEqual(repr(resp), "<ProxyProxyBug: ProxyProxyBug:fix this>")
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# Select related + filter on a related proxy field
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resp = ProxyImprovement.objects.select_related().get(
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reporter__name__icontains="butor"
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)
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self.assertEqual(
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repr(resp), "<ProxyImprovement: ProxyImprovement:improve that>"
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)
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# Select related + filter on a related proxy of proxy field
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resp = ProxyImprovement.objects.select_related().get(
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associated_bug__summary__icontains="fix"
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)
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self.assertEqual(
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repr(resp), "<ProxyImprovement: ProxyImprovement:improve that>"
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)
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def test_proxy_load_from_fixture(self):
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management.call_command("loaddata", "mypeople.json", verbosity=0)
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p = MyPerson.objects.get(pk=100)
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self.assertEqual(p.name, "Elvis Presley")
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def test_select_related_only(self):
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user = ProxyTrackerUser.objects.create(name="Joe Doe", status="test")
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issue = Issue.objects.create(summary="New issue", assignee=user)
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qs = Issue.objects.select_related("assignee").only("assignee__status")
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self.assertEqual(qs.get(), issue)
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def test_eq(self):
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self.assertEqual(MyPerson(id=100), Person(id=100))
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@override_settings(ROOT_URLCONF="proxy_models.urls")
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class ProxyModelAdminTests(TestCase):
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@classmethod
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def setUpTestData(cls):
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cls.superuser = AuthUser.objects.create(is_superuser=True, is_staff=True)
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cls.tu1 = ProxyTrackerUser.objects.create(name="Django Pony", status="emperor")
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cls.i1 = Issue.objects.create(summary="Pony's Issue", assignee=cls.tu1)
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def test_cascade_delete_proxy_model_admin_warning(self):
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"""
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Test if admin gives warning about cascade deleting models referenced
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to concrete model by deleting proxy object.
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"""
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tracker_user = TrackerUser.objects.all()[0]
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base_user = BaseUser.objects.all()[0]
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issue = Issue.objects.all()[0]
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with self.assertNumQueries(6):
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collector = admin.utils.NestedObjects("default")
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collector.collect(ProxyTrackerUser.objects.all())
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self.assertIn(tracker_user, collector.edges.get(None, ()))
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self.assertIn(base_user, collector.edges.get(None, ()))
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self.assertIn(issue, collector.edges.get(tracker_user, ()))
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def test_delete_str_in_model_admin(self):
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"""
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Test if the admin delete page shows the correct string representation
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for a proxy model.
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"""
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user = TrackerUser.objects.get(name="Django Pony")
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proxy = ProxyTrackerUser.objects.get(name="Django Pony")
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user_str = 'Tracker user: <a href="%s">%s</a>' % (
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reverse("admin_proxy:proxy_models_trackeruser_change", args=(user.pk,)),
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user,
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)
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proxy_str = 'Proxy tracker user: <a href="%s">%s</a>' % (
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reverse(
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"admin_proxy:proxy_models_proxytrackeruser_change", args=(proxy.pk,)
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),
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proxy,
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)
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self.client.force_login(self.superuser)
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response = self.client.get(
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reverse("admin_proxy:proxy_models_trackeruser_delete", args=(user.pk,))
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)
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delete_str = response.context["deleted_objects"][0]
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self.assertEqual(delete_str, user_str)
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response = self.client.get(
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reverse(
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"admin_proxy:proxy_models_proxytrackeruser_delete", args=(proxy.pk,)
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)
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)
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delete_str = response.context["deleted_objects"][0]
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self.assertEqual(delete_str, proxy_str)
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