1000 lines
41 KiB
Python
1000 lines
41 KiB
Python
import re
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import uuid
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import django
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from django.db import models
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from django.db.models import Case, Count, Q, When
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from django.test import TestCase, TransactionTestCase
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from django.utils import six
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from polymorphic.managers import PolymorphicManager
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from polymorphic.models import PolymorphicTypeUndefined
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from polymorphic.tests.models import (
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ArtProject,
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Base,
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BlogA,
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BlogB,
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BlogBase,
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BlogEntry,
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BlogEntry_limit_choices_to,
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ChildModelWithManager,
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CustomPkBase,
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CustomPkInherit,
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Duck,
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Enhance_Base,
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Enhance_Inherit,
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InitTestModelSubclass,
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MRODerived,
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Model2A,
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Model2B,
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Model2C,
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Model2D,
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ModelExtraA,
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ModelExtraB,
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ModelExtraC,
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ModelExtraExternal,
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ModelFieldNameTest,
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ModelShow1,
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ModelShow1_plain,
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ModelShow2,
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ModelShow2_plain,
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ModelShow3,
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ModelUnderRelChild,
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ModelUnderRelParent,
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ModelWithMyManager,
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ModelWithMyManager2,
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ModelWithMyManagerDefault,
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ModelWithMyManagerNoDefault,
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ModelX,
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ModelY,
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MultiTableDerived,
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MyManager,
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MyManagerQuerySet,
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NonProxyChild,
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One2OneRelatingModel,
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One2OneRelatingModelDerived,
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ParentModelWithManager,
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PlainA,
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PlainB,
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PlainC,
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PlainChildModelWithManager,
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PlainMyManager,
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PlainMyManagerQuerySet,
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PlainParentModelWithManager,
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ProxiedBase,
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ProxyBase,
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ProxyChild,
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ProxyModelA,
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ProxyModelB,
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ProxyModelBase,
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QuerySet,
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RedheadDuck,
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RelationA,
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RelationB,
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RelationBC,
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RelationBase,
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RubberDuck,
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TestParentLinkAndRelatedName,
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UUIDArtProject,
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UUIDPlainA,
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UUIDPlainB,
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UUIDPlainC,
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UUIDProject,
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UUIDResearchProject,
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)
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class PolymorphicTests(TransactionTestCase):
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"""
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The test suite
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"""
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def test_annotate_aggregate_order(self):
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# create a blog of type BlogA
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# create two blog entries in BlogA
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# create some blogs of type BlogB to make the BlogBase table data really polymorphic
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blog = BlogA.objects.create(name='B1', info='i1')
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blog.blogentry_set.create(text='bla')
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BlogEntry.objects.create(blog=blog, text='bla2')
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BlogB.objects.create(name='Bb1')
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BlogB.objects.create(name='Bb2')
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BlogB.objects.create(name='Bb3')
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qs = BlogBase.objects.annotate(entrycount=Count('BlogA___blogentry'))
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self.assertEqual(len(qs), 4)
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for o in qs:
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if o.name == 'B1':
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self.assertEqual(o.entrycount, 2)
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else:
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self.assertEqual(o.entrycount, 0)
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x = BlogBase.objects.aggregate(entrycount=Count('BlogA___blogentry'))
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self.assertEqual(x['entrycount'], 2)
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# create some more blogs for next test
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BlogA.objects.create(name='B2', info='i2')
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BlogA.objects.create(name='B3', info='i3')
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BlogA.objects.create(name='B4', info='i4')
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BlogA.objects.create(name='B5', info='i5')
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# test ordering for field in all entries
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expected = '''
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[ <BlogB: id 4, name (CharField) "Bb3">,
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<BlogB: id 3, name (CharField) "Bb2">,
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<BlogB: id 2, name (CharField) "Bb1">,
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<BlogA: id 8, name (CharField) "B5", info (CharField) "i5">,
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<BlogA: id 7, name (CharField) "B4", info (CharField) "i4">,
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<BlogA: id 6, name (CharField) "B3", info (CharField) "i3">,
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<BlogA: id 5, name (CharField) "B2", info (CharField) "i2">,
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<BlogA: id 1, name (CharField) "B1", info (CharField) "i1"> ]'''
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x = '\n' + repr(BlogBase.objects.order_by('-name'))
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self.assertEqual(x, expected)
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# test ordering for field in one subclass only
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# MySQL and SQLite return this order
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expected1 = '''
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[ <BlogA: id 8, name (CharField) "B5", info (CharField) "i5">,
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<BlogA: id 7, name (CharField) "B4", info (CharField) "i4">,
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<BlogA: id 6, name (CharField) "B3", info (CharField) "i3">,
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<BlogA: id 5, name (CharField) "B2", info (CharField) "i2">,
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<BlogA: id 1, name (CharField) "B1", info (CharField) "i1">,
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<BlogB: id 2, name (CharField) "Bb1">,
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<BlogB: id 3, name (CharField) "Bb2">,
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<BlogB: id 4, name (CharField) "Bb3"> ]'''
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# PostgreSQL returns this order
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expected2 = '''
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[ <BlogB: id 2, name (CharField) "Bb1">,
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<BlogB: id 3, name (CharField) "Bb2">,
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<BlogB: id 4, name (CharField) "Bb3">,
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<BlogA: id 8, name (CharField) "B5", info (CharField) "i5">,
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<BlogA: id 7, name (CharField) "B4", info (CharField) "i4">,
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<BlogA: id 6, name (CharField) "B3", info (CharField) "i3">,
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<BlogA: id 5, name (CharField) "B2", info (CharField) "i2">,
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<BlogA: id 1, name (CharField) "B1", info (CharField) "i1"> ]'''
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x = '\n' + repr(BlogBase.objects.order_by('-BlogA___info'))
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self.assertTrue(x == expected1 or x == expected2)
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def test_limit_choices_to(self):
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"""
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this is not really a testcase, as limit_choices_to only affects the Django admin
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"""
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# create a blog of type BlogA
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blog_a = BlogA.objects.create(name='aa', info='aa')
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blog_b = BlogB.objects.create(name='bb')
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# create two blog entries
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entry1 = BlogEntry_limit_choices_to.objects.create(blog=blog_b, text='bla2')
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entry2 = BlogEntry_limit_choices_to.objects.create(blog=blog_b, text='bla2')
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def test_primary_key_custom_field_problem(self):
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"""
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object retrieval problem occuring with some custom primary key fields (UUIDField as test case)
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"""
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UUIDProject.objects.create(topic="John's gathering")
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UUIDArtProject.objects.create(topic="Sculpting with Tim", artist="T. Turner")
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UUIDResearchProject.objects.create(topic="Swallow Aerodynamics", supervisor="Dr. Winter")
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qs = UUIDProject.objects.all()
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ol = list(qs)
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a = qs[0]
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b = qs[1]
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c = qs[2]
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self.assertEqual(len(qs), 3)
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self.assertIsInstance(a.uuid_primary_key, uuid.UUID)
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self.assertIsInstance(a.pk, uuid.UUID)
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res = re.sub(' "(.*?)..", topic', ', topic', repr(qs))
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res_exp = """[ <UUIDProject: uuid_primary_key (UUIDField/pk), topic (CharField) "John's gathering">,
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<UUIDArtProject: uuid_primary_key (UUIDField/pk), topic (CharField) "Sculpting with Tim", artist (CharField) "T. Turner">,
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<UUIDResearchProject: uuid_primary_key (UUIDField/pk), topic (CharField) "Swallow Aerodynamics", supervisor (CharField) "Dr. Winter"> ]"""
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self.assertEqual(res, res_exp)
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a = UUIDPlainA.objects.create(field1='A1')
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b = UUIDPlainB.objects.create(field1='B1', field2='B2')
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c = UUIDPlainC.objects.create(field1='C1', field2='C2', field3='C3')
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qs = UUIDPlainA.objects.all()
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# Test that primary key values are valid UUIDs
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self.assertEqual(uuid.UUID("urn:uuid:%s" % a.pk, version=1), a.pk)
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self.assertEqual(uuid.UUID("urn:uuid:%s" % c.pk, version=1), c.pk)
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def create_model2abcd(self):
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"""
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Create the chain of objects of Model2,
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this is reused in various tests.
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"""
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a = Model2A.objects.create(field1='A1')
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b = Model2B.objects.create(field1='B1', field2='B2')
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c = Model2C.objects.create(field1='C1', field2='C2', field3='C3')
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d = Model2D.objects.create(field1='D1', field2='D2', field3='D3', field4='D4')
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return a, b, c, d
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def test_simple_inheritance(self):
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self.create_model2abcd()
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objects = Model2A.objects.all()
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self.assertQuerysetEqual(
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objects,
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[Model2A, Model2B, Model2C, Model2D],
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transform=lambda o: o.__class__,
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ordered=False,
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)
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def test_defer_fields(self):
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self.create_model2abcd()
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objects_deferred = Model2A.objects.defer('field1')
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self.assertNotIn('field1', objects_deferred[0].__dict__, 'field1 was not deferred (using defer())')
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self.assertRegex(repr(objects_deferred[0]),
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r'<Model2A: id \d+, field1 \(CharField\), deferred\[field1\]>')
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self.assertRegex(repr(objects_deferred[1]),
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r'<Model2B: id \d+, field1 \(CharField\), field2 \(CharField\), deferred\[field1\]>')
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self.assertRegex(repr(objects_deferred[2]),
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r'<Model2C: id \d+, field1 \(CharField\), field2 \(CharField\), field3 \(CharField\), deferred\[field1\]>')
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self.assertRegex(repr(objects_deferred[3]),
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r'<Model2D: id \d+, field1 \(CharField\), field2 \(CharField\), field3 \(CharField\), field4 \(CharField\), deferred\[field1\]>')
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objects_only = Model2A.objects.only('pk', 'polymorphic_ctype', 'field1')
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self.assertIn('field1', objects_only[0].__dict__,
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'qs.only("field1") was used, but field1 was incorrectly deferred')
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self.assertIn('field1', objects_only[3].__dict__,
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'qs.only("field1") was used, but field1 was incorrectly deferred'
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' on a child model')
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self.assertNotIn('field4', objects_only[3].__dict__,
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'field4 was not deferred (using only())')
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self.assertRegex(repr(objects_only[0]),
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r'<Model2A: id \d+, field1 \(CharField\)>')
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self.assertRegex(repr(objects_only[1]),
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r'<Model2B: id \d+, field1 \(CharField\), field2 \(CharField\), deferred\[field2\]>')
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self.assertRegex(repr(objects_only[2]),
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r'<Model2C: id \d+, field1 \(CharField\), field2 \(CharField\), field3 \(CharField\), '
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r'deferred\[field2,field3,model2a_ptr_id\]>')
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self.assertRegex(repr(objects_only[3]),
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r'<Model2D: id \d+, field1 \(CharField\), field2 \(CharField\), field3 \(CharField\), field4 \(CharField\), '
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r'deferred\[field2,field3,field4,model2a_ptr_id,model2b_ptr_id\]>')
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ModelX.objects.create(field_b="A1", field_x="A2")
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ModelY.objects.create(field_b="B1", field_y="B2")
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objects_deferred = Base.objects.defer('ModelY___field_y')
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self.assertRegex(repr(objects_deferred[0]),
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r'<ModelX: id \d+, field_b \(CharField\), field_x \(CharField\)>')
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self.assertRegex(repr(objects_deferred[1]),
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r'<ModelY: id \d+, field_b \(CharField\), field_y \(CharField\), deferred\[field_y\]>')
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objects_only = Base.objects.only(
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'polymorphic_ctype', 'ModelY___field_y', 'ModelX___field_x',
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)
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self.assertRegex(repr(objects_only[0]),
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r'<ModelX: id \d+, field_b \(CharField\), field_x \(CharField\), deferred\[field_b\]>')
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self.assertRegex(repr(objects_only[1]),
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r'<ModelY: id \d+, field_b \(CharField\), field_y \(CharField\), deferred\[field_b\]>')
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def test_defer_related_fields(self):
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self.create_model2abcd()
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objects_deferred_field4 = Model2A.objects.defer('Model2D___field4')
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self.assertNotIn('field4', objects_deferred_field4[3].__dict__,
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'field4 was not deferred (using defer(), traversing inheritance)')
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self.assertEqual(objects_deferred_field4[0].__class__, Model2A)
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self.assertEqual(objects_deferred_field4[1].__class__, Model2B)
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self.assertEqual(objects_deferred_field4[2].__class__, Model2C)
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self.assertEqual(objects_deferred_field4[3].__class__, Model2D)
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objects_only_field4 = Model2A.objects.only(
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'polymorphic_ctype', 'field1',
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'Model2B___id', 'Model2B___field2', 'Model2B___model2a_ptr',
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'Model2C___id', 'Model2C___field3', 'Model2C___model2b_ptr',
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'Model2D___id', 'Model2D___model2c_ptr')
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self.assertEqual(objects_only_field4[0].__class__, Model2A)
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self.assertEqual(objects_only_field4[1].__class__, Model2B)
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self.assertEqual(objects_only_field4[2].__class__, Model2C)
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self.assertEqual(objects_only_field4[3].__class__, Model2D)
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def test_manual_get_real_instance(self):
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self.create_model2abcd()
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o = Model2A.objects.non_polymorphic().get(field1='C1')
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self.assertEqual(o.get_real_instance().__class__, Model2C)
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def test_non_polymorphic(self):
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self.create_model2abcd()
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objects = list(Model2A.objects.all().non_polymorphic())
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self.assertQuerysetEqual(
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objects,
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[Model2A, Model2A, Model2A, Model2A],
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transform=lambda o: o.__class__,
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)
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def test_get_real_instances(self):
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self.create_model2abcd()
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qs = Model2A.objects.all().non_polymorphic()
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# from queryset
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objects = qs.get_real_instances()
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self.assertQuerysetEqual(
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objects,
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[Model2A, Model2B, Model2C, Model2D],
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transform=lambda o: o.__class__,
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)
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# from a manual list
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objects = Model2A.objects.get_real_instances(list(qs))
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self.assertQuerysetEqual(
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objects,
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[Model2A, Model2B, Model2C, Model2D],
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transform=lambda o: o.__class__,
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)
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def test_translate_polymorphic_q_object(self):
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self.create_model2abcd()
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q = Model2A.translate_polymorphic_Q_object(Q(instance_of=Model2C))
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objects = Model2A.objects.filter(q)
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self.assertQuerysetEqual(
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objects,
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[Model2C, Model2D],
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transform=lambda o: o.__class__,
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ordered=False,
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)
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def test_base_manager(self):
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def base_manager(model):
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return (
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type(model._base_manager),
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model._base_manager.model
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)
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self.assertEqual(
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base_manager(PlainA),
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(models.Manager, PlainA),
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)
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self.assertEqual(
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base_manager(PlainB),
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(models.Manager, PlainB),
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)
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self.assertEqual(
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base_manager(PlainC),
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(models.Manager, PlainC),
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)
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self.assertEqual(
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base_manager(Model2A),
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(PolymorphicManager, Model2A),
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)
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self.assertEqual(
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base_manager(Model2B),
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(PolymorphicManager, Model2B),
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)
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self.assertEqual(
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base_manager(Model2C),
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(PolymorphicManager, Model2C),
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)
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self.assertEqual(
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base_manager(One2OneRelatingModel),
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(PolymorphicManager, One2OneRelatingModel),
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)
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self.assertEqual(
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base_manager(One2OneRelatingModelDerived),
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(PolymorphicManager, One2OneRelatingModelDerived),
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)
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def test_instance_default_manager(self):
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def default_manager(instance):
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return (
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type(instance.__class__._default_manager),
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instance.__class__._default_manager.model
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)
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plain_a = PlainA(field1='C1')
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plain_b = PlainB(field2='C1')
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plain_c = PlainC(field3='C1')
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model_2a = Model2A(field1='C1')
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model_2b = Model2B(field2='C1')
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model_2c = Model2C(field3='C1')
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self.assertEqual(
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default_manager(plain_a),
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(models.Manager, PlainA),
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)
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self.assertEqual(
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default_manager(plain_b),
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(models.Manager, PlainB),
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)
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self.assertEqual(
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default_manager(plain_c),
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(models.Manager, PlainC),
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)
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self.assertEqual(
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default_manager(model_2a),
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(PolymorphicManager, Model2A),
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)
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self.assertEqual(
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default_manager(model_2b),
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(PolymorphicManager, Model2B),
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)
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self.assertEqual(
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default_manager(model_2c),
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(PolymorphicManager, Model2C),
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)
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def test_foreignkey_field(self):
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self.create_model2abcd()
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object2a = Model2A.base_objects.get(field1='C1')
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self.assertEqual(object2a.model2b.__class__, Model2B)
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object2b = Model2B.base_objects.get(field1='C1')
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self.assertEqual(object2b.model2c.__class__, Model2C)
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def test_onetoone_field(self):
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self.create_model2abcd()
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a = Model2A.base_objects.get(field1='C1')
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b = One2OneRelatingModelDerived.objects.create(one2one=a, field1='f1', field2='f2')
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# this result is basically wrong, probably due to Django cacheing (we used base_objects), but should not be a problem
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self.assertEqual(b.one2one.__class__, Model2A)
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self.assertEqual(b.one2one_id, b.one2one.id)
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c = One2OneRelatingModelDerived.objects.get(field1='f1')
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self.assertEqual(c.one2one.__class__, Model2C)
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self.assertEqual(
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a.one2onerelatingmodel.__class__,
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One2OneRelatingModelDerived,
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)
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def test_manytomany_field(self):
|
|
# Model 1
|
|
o = ModelShow1.objects.create(field1='abc')
|
|
o.m2m.add(o)
|
|
o.save()
|
|
self.assertEqual(repr(ModelShow1.objects.all()), '[ <ModelShow1: id 1, field1 (CharField), m2m (ManyToManyField)> ]')
|
|
|
|
# Model 2
|
|
o = ModelShow2.objects.create(field1='abc')
|
|
o.m2m.add(o)
|
|
o.save()
|
|
self.assertEqual(repr(ModelShow2.objects.all()), '[ <ModelShow2: id 1, field1 "abc", m2m 1> ]')
|
|
|
|
# Model 3
|
|
o = ModelShow3.objects.create(field1='abc')
|
|
o.m2m.add(o)
|
|
o.save()
|
|
self.assertEqual(repr(ModelShow3.objects.all()), '[ <ModelShow3: id 1, field1 (CharField) "abc", m2m (ManyToManyField) 1> ]')
|
|
self.assertEqual(repr(ModelShow1.objects.all().annotate(Count('m2m'))), '[ <ModelShow1: id 1, field1 (CharField), m2m (ManyToManyField) - Ann: m2m__count (int)> ]')
|
|
self.assertEqual(repr(ModelShow2.objects.all().annotate(Count('m2m'))), '[ <ModelShow2: id 1, field1 "abc", m2m 1 - Ann: m2m__count 1> ]')
|
|
self.assertEqual(repr(ModelShow3.objects.all().annotate(Count('m2m'))), '[ <ModelShow3: id 1, field1 (CharField) "abc", m2m (ManyToManyField) 1 - Ann: m2m__count (int) 1> ]')
|
|
|
|
# no pretty printing
|
|
ModelShow1_plain.objects.create(field1='abc')
|
|
ModelShow2_plain.objects.create(field1='abc', field2='def')
|
|
self.assertQuerysetEqual(
|
|
ModelShow1_plain.objects.all(),
|
|
[ModelShow1_plain, ModelShow2_plain],
|
|
transform=lambda o: o.__class__,
|
|
ordered=False,
|
|
)
|
|
|
|
def test_extra_method(self):
|
|
a, b, c, d = self.create_model2abcd()
|
|
|
|
objects = Model2A.objects.extra(
|
|
where=['id IN ({}, {})'.format(b.id, c.id)]
|
|
)
|
|
self.assertQuerysetEqual(
|
|
objects,
|
|
[Model2B, Model2C],
|
|
transform=lambda o: o.__class__,
|
|
ordered=False,
|
|
)
|
|
|
|
objects = Model2A.objects.extra(select={"select_test": "field1 = 'A1'"}, where=["field1 = 'A1' OR field1 = 'B1'"], order_by=['-id'])
|
|
self.assertQuerysetEqual(
|
|
objects,
|
|
[Model2B, Model2A],
|
|
transform=lambda o: o.__class__,
|
|
)
|
|
|
|
ModelExtraA.objects.create(field1='A1')
|
|
ModelExtraB.objects.create(field1='B1', field2='B2')
|
|
ModelExtraC.objects.create(field1='C1', field2='C2', field3='C3')
|
|
ModelExtraExternal.objects.create(topic='extra1')
|
|
ModelExtraExternal.objects.create(topic='extra2')
|
|
ModelExtraExternal.objects.create(topic='extra3')
|
|
objects = ModelExtraA.objects.extra(
|
|
tables=["tests_modelextraexternal"],
|
|
select={"topic": "tests_modelextraexternal.topic"},
|
|
where=["tests_modelextraa.id = tests_modelextraexternal.id"],
|
|
)
|
|
if six.PY3:
|
|
self.assertEqual(repr(objects[0]), '<ModelExtraA: id 1, field1 (CharField) "A1" - Extra: topic (str) "extra1">')
|
|
self.assertEqual(repr(objects[1]), '<ModelExtraB: id 2, field1 (CharField) "B1", field2 (CharField) "B2" - Extra: topic (str) "extra2">')
|
|
self.assertEqual(repr(objects[2]), '<ModelExtraC: id 3, field1 (CharField) "C1", field2 (CharField) "C2", field3 (CharField) "C3" - Extra: topic (str) "extra3">')
|
|
else:
|
|
self.assertEqual(repr(objects[0]), '<ModelExtraA: id 1, field1 (CharField) "A1" - Extra: topic (unicode) "extra1">')
|
|
self.assertEqual(repr(objects[1]), '<ModelExtraB: id 2, field1 (CharField) "B1", field2 (CharField) "B2" - Extra: topic (unicode) "extra2">')
|
|
self.assertEqual(repr(objects[2]), '<ModelExtraC: id 3, field1 (CharField) "C1", field2 (CharField) "C2", field3 (CharField) "C3" - Extra: topic (unicode) "extra3">')
|
|
self.assertEqual(len(objects), 3)
|
|
|
|
def test_instance_of_filter(self):
|
|
self.create_model2abcd()
|
|
|
|
objects = Model2A.objects.instance_of(Model2B)
|
|
self.assertQuerysetEqual(
|
|
objects,
|
|
[Model2B, Model2C, Model2D],
|
|
transform=lambda o: o.__class__,
|
|
ordered=False,
|
|
)
|
|
|
|
objects = Model2A.objects.filter(instance_of=Model2B)
|
|
self.assertQuerysetEqual(
|
|
objects,
|
|
[Model2B, Model2C, Model2D],
|
|
transform=lambda o: o.__class__,
|
|
ordered=False,
|
|
)
|
|
|
|
objects = Model2A.objects.filter(Q(instance_of=Model2B))
|
|
self.assertQuerysetEqual(
|
|
objects,
|
|
[Model2B, Model2C, Model2D],
|
|
transform=lambda o: o.__class__,
|
|
ordered=False,
|
|
)
|
|
|
|
objects = Model2A.objects.not_instance_of(Model2B)
|
|
self.assertQuerysetEqual(
|
|
objects,
|
|
[Model2A],
|
|
transform=lambda o: o.__class__,
|
|
ordered=False,
|
|
)
|
|
|
|
def test_polymorphic___filter(self):
|
|
self.create_model2abcd()
|
|
|
|
objects = Model2A.objects.filter(Q(Model2B___field2='B2') | Q(Model2C___field3='C3'))
|
|
self.assertQuerysetEqual(
|
|
objects,
|
|
[Model2B, Model2C],
|
|
transform=lambda o: o.__class__,
|
|
ordered=False,
|
|
)
|
|
|
|
def test_polymorphic_applabel___filter(self):
|
|
self.create_model2abcd()
|
|
|
|
assert Model2B._meta.app_label == 'tests'
|
|
objects = Model2A.objects.filter(Q(tests__Model2B___field2='B2') | Q(tests__Model2C___field3='C3'))
|
|
self.assertQuerysetEqual(
|
|
objects,
|
|
[Model2B, Model2C],
|
|
transform=lambda o: o.__class__,
|
|
ordered=False,
|
|
)
|
|
|
|
def test_query_filter_exclude_is_immutable(self):
|
|
# given
|
|
q_to_reuse = Q(Model2B___field2='something')
|
|
untouched_q_object = Q(Model2B___field2='something')
|
|
# when
|
|
Model2A.objects.filter(q_to_reuse).all()
|
|
# then
|
|
self.assertEqual(q_to_reuse.children, untouched_q_object.children)
|
|
|
|
# given
|
|
q_to_reuse = Q(Model2B___field2='something')
|
|
untouched_q_object = Q(Model2B___field2='something')
|
|
# when
|
|
Model2B.objects.filter(q_to_reuse).all()
|
|
# then
|
|
self.assertEqual(q_to_reuse.children, untouched_q_object.children)
|
|
|
|
def test_polymorphic___filter_field(self):
|
|
p = ModelUnderRelParent.objects.create(_private=True, field1='AA')
|
|
ModelUnderRelChild.objects.create(parent=p, _private2=True)
|
|
|
|
# The "___" filter should also parse to "parent" -> "_private" as fallback.
|
|
objects = ModelUnderRelChild.objects.filter(parent___private=True)
|
|
self.assertEqual(len(objects), 1)
|
|
|
|
def test_polymorphic___filter_reverse_field(self):
|
|
p = ModelUnderRelParent.objects.create(_private=True, field1='BB')
|
|
ModelUnderRelChild.objects.create(parent=p, _private2=True)
|
|
|
|
# Also test for reverse relations
|
|
objects = ModelUnderRelParent.objects.filter(children___private2=True)
|
|
self.assertEqual(len(objects), 1)
|
|
|
|
def test_delete(self):
|
|
a, b, c, d = self.create_model2abcd()
|
|
|
|
oa = Model2A.objects.get(id=b.id)
|
|
self.assertEqual(oa.__class__, Model2B)
|
|
self.assertEqual(Model2A.objects.count(), 4)
|
|
|
|
oa.delete()
|
|
objects = Model2A.objects.all()
|
|
self.assertQuerysetEqual(
|
|
objects,
|
|
[Model2A, Model2C, Model2D],
|
|
transform=lambda o: o.__class__,
|
|
ordered=False,
|
|
)
|
|
|
|
def test_combine_querysets(self):
|
|
ModelX.objects.create(field_x='x')
|
|
ModelY.objects.create(field_y='y')
|
|
|
|
qs = Base.objects.instance_of(ModelX) | Base.objects.instance_of(ModelY)
|
|
self.assertEqual(repr(qs[0]), '<ModelX: id 1, field_b (CharField), field_x (CharField)>')
|
|
self.assertEqual(repr(qs[1]), '<ModelY: id 2, field_b (CharField), field_y (CharField)>')
|
|
self.assertEqual(len(qs), 2)
|
|
|
|
def test_multiple_inheritance(self):
|
|
# multiple inheritance, subclassing third party models (mix PolymorphicModel with models.Model)
|
|
|
|
Enhance_Base.objects.create(field_b='b-base')
|
|
Enhance_Inherit.objects.create(field_b='b-inherit', field_p='p', field_i='i')
|
|
|
|
qs = Enhance_Base.objects.all()
|
|
self.assertEqual(len(qs), 2)
|
|
self.assertEqual(repr(qs[0]), '<Enhance_Base: base_id (AutoField/pk) 1, field_b (CharField) "b-base">')
|
|
self.assertEqual(repr(qs[1]), '<Enhance_Inherit: base_id (AutoField/pk) 2, field_b (CharField) "b-inherit", id 1, field_p (CharField) "p", field_i (CharField) "i">')
|
|
|
|
def test_relation_base(self):
|
|
# ForeignKey, ManyToManyField
|
|
obase = RelationBase.objects.create(field_base='base')
|
|
oa = RelationA.objects.create(field_base='A1', field_a='A2', fk=obase)
|
|
ob = RelationB.objects.create(field_base='B1', field_b='B2', fk=oa)
|
|
oc = RelationBC.objects.create(field_base='C1', field_b='C2', field_c='C3', fk=oa)
|
|
oa.m2m.add(oa)
|
|
oa.m2m.add(ob)
|
|
|
|
objects = RelationBase.objects.all()
|
|
self.assertEqual(repr(objects[0]), '<RelationBase: id 1, field_base (CharField) "base", fk (ForeignKey) None, m2m (ManyToManyField) 0>')
|
|
self.assertEqual(repr(objects[1]), '<RelationA: id 2, field_base (CharField) "A1", fk (ForeignKey) RelationBase, field_a (CharField) "A2", m2m (ManyToManyField) 2>')
|
|
self.assertEqual(repr(objects[2]), '<RelationB: id 3, field_base (CharField) "B1", fk (ForeignKey) RelationA, field_b (CharField) "B2", m2m (ManyToManyField) 1>')
|
|
self.assertEqual(repr(objects[3]), '<RelationBC: id 4, field_base (CharField) "C1", fk (ForeignKey) RelationA, field_b (CharField) "C2", field_c (CharField) "C3", m2m (ManyToManyField) 0>')
|
|
self.assertEqual(len(objects), 4)
|
|
|
|
oa = RelationBase.objects.get(id=2)
|
|
self.assertEqual(repr(oa.fk), '<RelationBase: id 1, field_base (CharField) "base", fk (ForeignKey) None, m2m (ManyToManyField) 0>')
|
|
|
|
objects = oa.relationbase_set.all()
|
|
self.assertEqual(repr(objects[0]), '<RelationB: id 3, field_base (CharField) "B1", fk (ForeignKey) RelationA, field_b (CharField) "B2", m2m (ManyToManyField) 1>')
|
|
self.assertEqual(repr(objects[1]), '<RelationBC: id 4, field_base (CharField) "C1", fk (ForeignKey) RelationA, field_b (CharField) "C2", field_c (CharField) "C3", m2m (ManyToManyField) 0>')
|
|
self.assertEqual(len(objects), 2)
|
|
|
|
ob = RelationBase.objects.get(id=3)
|
|
self.assertEqual(repr(ob.fk), '<RelationA: id 2, field_base (CharField) "A1", fk (ForeignKey) RelationBase, field_a (CharField) "A2", m2m (ManyToManyField) 2>')
|
|
|
|
oa = RelationA.objects.get()
|
|
objects = oa.m2m.all()
|
|
self.assertEqual(repr(objects[0]), '<RelationA: id 2, field_base (CharField) "A1", fk (ForeignKey) RelationBase, field_a (CharField) "A2", m2m (ManyToManyField) 2>')
|
|
self.assertEqual(repr(objects[1]), '<RelationB: id 3, field_base (CharField) "B1", fk (ForeignKey) RelationA, field_b (CharField) "B2", m2m (ManyToManyField) 1>')
|
|
self.assertEqual(len(objects), 2)
|
|
|
|
def test_user_defined_manager(self):
|
|
self.create_model2abcd()
|
|
ModelWithMyManager.objects.create(field1='D1a', field4='D4a')
|
|
ModelWithMyManager.objects.create(field1='D1b', field4='D4b')
|
|
|
|
objects = ModelWithMyManager.objects.all() # MyManager should reverse the sorting of field1
|
|
self.assertQuerysetEqual(
|
|
objects,
|
|
[
|
|
(ModelWithMyManager, 'D1b', 'D4b'),
|
|
(ModelWithMyManager, 'D1a', 'D4a'),
|
|
],
|
|
transform=lambda o: (o.__class__, o.field1, o.field4),
|
|
)
|
|
|
|
self.assertIs(type(ModelWithMyManager.objects), MyManager)
|
|
self.assertIs(type(ModelWithMyManager._default_manager), MyManager)
|
|
self.assertIs(type(ModelWithMyManager.base_objects), models.Manager)
|
|
|
|
def test_user_defined_manager_as_secondary(self):
|
|
self.create_model2abcd()
|
|
ModelWithMyManagerNoDefault.objects.create(field1='D1a', field4='D4a')
|
|
ModelWithMyManagerNoDefault.objects.create(field1='D1b', field4='D4b')
|
|
|
|
objects = ModelWithMyManagerNoDefault.my_objects.all() # MyManager should reverse the sorting of field1
|
|
self.assertQuerysetEqual(
|
|
objects,
|
|
[
|
|
(ModelWithMyManagerNoDefault, 'D1b', 'D4b'),
|
|
(ModelWithMyManagerNoDefault, 'D1a', 'D4a'),
|
|
],
|
|
transform=lambda o: (o.__class__, o.field1, o.field4),
|
|
)
|
|
|
|
self.assertIs(type(ModelWithMyManagerNoDefault.my_objects), MyManager)
|
|
self.assertIs(type(ModelWithMyManagerNoDefault.objects), PolymorphicManager)
|
|
self.assertIs(type(ModelWithMyManagerNoDefault._default_manager), PolymorphicManager)
|
|
self.assertIs(type(ModelWithMyManagerNoDefault.base_objects), models.Manager)
|
|
|
|
def test_user_objects_manager_as_secondary(self):
|
|
self.create_model2abcd()
|
|
ModelWithMyManagerDefault.objects.create(field1='D1a', field4='D4a')
|
|
ModelWithMyManagerDefault.objects.create(field1='D1b', field4='D4b')
|
|
|
|
self.assertIs(type(ModelWithMyManagerDefault.my_objects), MyManager)
|
|
self.assertIs(type(ModelWithMyManagerDefault.objects), PolymorphicManager)
|
|
self.assertIs(type(ModelWithMyManagerDefault._default_manager), MyManager)
|
|
self.assertIs(type(ModelWithMyManagerDefault.base_objects), models.Manager)
|
|
|
|
def test_user_defined_queryset_as_manager(self):
|
|
self.create_model2abcd()
|
|
ModelWithMyManager2.objects.create(field1='D1a', field4='D4a')
|
|
ModelWithMyManager2.objects.create(field1='D1b', field4='D4b')
|
|
|
|
objects = ModelWithMyManager2.objects.all()
|
|
self.assertQuerysetEqual(
|
|
objects,
|
|
[
|
|
(ModelWithMyManager2, 'D1a', 'D4a'),
|
|
(ModelWithMyManager2, 'D1b', 'D4b'),
|
|
],
|
|
transform=lambda o: (o.__class__, o.field1, o.field4),
|
|
ordered=False,
|
|
)
|
|
|
|
self.assertEqual(type(ModelWithMyManager2.objects).__name__, 'PolymorphicManagerFromMyManagerQuerySet')
|
|
self.assertEqual(type(ModelWithMyManager2._default_manager).__name__, 'PolymorphicManagerFromMyManagerQuerySet')
|
|
self.assertIs(type(ModelWithMyManager2.base_objects), models.Manager)
|
|
|
|
def test_manager_inheritance(self):
|
|
# by choice of MRO, should be MyManager from MROBase1.
|
|
self.assertIs(type(MRODerived.objects), MyManager)
|
|
|
|
def test_queryset_assignment(self):
|
|
# This is just a consistency check for now, testing standard Django behavior.
|
|
parent = PlainParentModelWithManager.objects.create()
|
|
child = PlainChildModelWithManager.objects.create(fk=parent)
|
|
self.assertIs(type(PlainParentModelWithManager._default_manager), models.Manager)
|
|
self.assertIs(type(PlainChildModelWithManager._default_manager), PlainMyManager)
|
|
self.assertIs(type(PlainChildModelWithManager.objects), PlainMyManager)
|
|
self.assertIs(type(PlainChildModelWithManager.objects.all()), PlainMyManagerQuerySet)
|
|
|
|
# A related set is created using the model's _default_manager, so does gain extra methods.
|
|
self.assertIs(type(parent.childmodel_set.my_queryset_foo()), PlainMyManagerQuerySet)
|
|
|
|
# For polymorphic models, the same should happen.
|
|
parent = ParentModelWithManager.objects.create()
|
|
child = ChildModelWithManager.objects.create(fk=parent)
|
|
self.assertIs(type(ParentModelWithManager._default_manager), PolymorphicManager)
|
|
self.assertIs(type(ChildModelWithManager._default_manager), MyManager)
|
|
self.assertIs(type(ChildModelWithManager.objects), MyManager)
|
|
self.assertIs(type(ChildModelWithManager.objects.my_queryset_foo()), MyManagerQuerySet)
|
|
|
|
# A related set is created using the model's _default_manager, so does gain extra methods.
|
|
self.assertIs(type(parent.childmodel_set.my_queryset_foo()), MyManagerQuerySet)
|
|
|
|
def test_proxy_models(self):
|
|
# prepare some data
|
|
for data in ('bleep bloop', 'I am a', 'computer'):
|
|
ProxyChild.objects.create(some_data=data)
|
|
|
|
# this caches ContentType queries so they don't interfere with our query counts later
|
|
list(ProxyBase.objects.all())
|
|
|
|
# one query per concrete class
|
|
with self.assertNumQueries(1):
|
|
items = list(ProxyBase.objects.all())
|
|
|
|
self.assertIsInstance(items[0], ProxyChild)
|
|
|
|
def test_queryset_on_proxy_model_does_not_return_superclasses(self):
|
|
ProxyBase.objects.create(some_data='Base1')
|
|
ProxyBase.objects.create(some_data='Base2')
|
|
ProxyChild.objects.create(some_data='Child1')
|
|
ProxyChild.objects.create(some_data='Child2')
|
|
ProxyChild.objects.create(some_data='Child3')
|
|
|
|
self.assertEqual(5, ProxyBase.objects.count())
|
|
self.assertEqual(3, ProxyChild.objects.count())
|
|
|
|
def test_proxy_get_real_instance_class(self):
|
|
"""
|
|
The call to ``get_real_instance()`` also checks whether the returned model is of the correct type.
|
|
This unit test guards that this check is working properly. For instance,
|
|
proxy child models need to be handled separately.
|
|
"""
|
|
name = "Item1"
|
|
nonproxychild = NonProxyChild.objects.create(name=name)
|
|
|
|
pb = ProxyBase.objects.get(id=1)
|
|
self.assertEqual(pb.get_real_instance_class(), NonProxyChild)
|
|
self.assertEqual(pb.get_real_instance(), nonproxychild)
|
|
self.assertEqual(pb.name, name)
|
|
|
|
pbm = NonProxyChild.objects.get(id=1)
|
|
self.assertEqual(pbm.get_real_instance_class(), NonProxyChild)
|
|
self.assertEqual(pbm.get_real_instance(), nonproxychild)
|
|
self.assertEqual(pbm.name, name)
|
|
|
|
def test_content_types_for_proxy_models(self):
|
|
"""Checks if ContentType is capable of returning proxy models."""
|
|
from django.contrib.contenttypes.models import ContentType
|
|
|
|
ct = ContentType.objects.get_for_model(ProxyChild, for_concrete_model=False)
|
|
self.assertEqual(ProxyChild, ct.model_class())
|
|
|
|
def test_proxy_model_inheritance(self):
|
|
"""
|
|
Polymorphic abilities should also work when the base model is a proxy object.
|
|
"""
|
|
# The managers should point to the proper objects.
|
|
# otherwise, the whole excersise is pointless.
|
|
self.assertEqual(ProxiedBase.objects.model, ProxiedBase)
|
|
self.assertEqual(ProxyModelBase.objects.model, ProxyModelBase)
|
|
self.assertEqual(ProxyModelA.objects.model, ProxyModelA)
|
|
self.assertEqual(ProxyModelB.objects.model, ProxyModelB)
|
|
|
|
# Create objects
|
|
ProxyModelA.objects.create(name="object1")
|
|
ProxyModelB.objects.create(name="object2", field2="bb")
|
|
|
|
# Getting single objects
|
|
object1 = ProxyModelBase.objects.get(name='object1')
|
|
object2 = ProxyModelBase.objects.get(name='object2')
|
|
self.assertEqual(repr(object1), '<ProxyModelA: id 1, name (CharField) "object1", field1 (CharField) "">')
|
|
self.assertEqual(repr(object2), '<ProxyModelB: id 2, name (CharField) "object2", field2 (CharField) "bb">')
|
|
self.assertIsInstance(object1, ProxyModelA)
|
|
self.assertIsInstance(object2, ProxyModelB)
|
|
|
|
# Same for lists
|
|
objects = list(ProxyModelBase.objects.all().order_by('name'))
|
|
self.assertEqual(repr(objects[0]), '<ProxyModelA: id 1, name (CharField) "object1", field1 (CharField) "">')
|
|
self.assertEqual(repr(objects[1]), '<ProxyModelB: id 2, name (CharField) "object2", field2 (CharField) "bb">')
|
|
self.assertIsInstance(objects[0], ProxyModelA)
|
|
self.assertIsInstance(objects[1], ProxyModelB)
|
|
|
|
def test_custom_pk(self):
|
|
CustomPkBase.objects.create(b='b')
|
|
CustomPkInherit.objects.create(b='b', i='i')
|
|
qs = CustomPkBase.objects.all()
|
|
self.assertEqual(len(qs), 2)
|
|
self.assertEqual(repr(qs[0]), '<CustomPkBase: id 1, b (CharField) "b">')
|
|
self.assertEqual(repr(qs[1]), '<CustomPkInherit: id 2, b (CharField) "b", custom_id (AutoField/pk) 1, i (CharField) "i">')
|
|
|
|
def test_fix_getattribute(self):
|
|
# fixed issue in PolymorphicModel.__getattribute__: field name same as model name
|
|
o = ModelFieldNameTest.objects.create(modelfieldnametest='1')
|
|
self.assertEqual(repr(o), '<ModelFieldNameTest: id 1, modelfieldnametest (CharField)>')
|
|
|
|
# if subclass defined __init__ and accessed class members,
|
|
# __getattribute__ had a problem: "...has no attribute 'sub_and_superclass_dict'"
|
|
o = InitTestModelSubclass.objects.create()
|
|
self.assertEqual(o.bar, 'XYZ')
|
|
|
|
def test_parent_link_and_related_name(self):
|
|
t = TestParentLinkAndRelatedName(field1="TestParentLinkAndRelatedName")
|
|
t.save()
|
|
p = ModelShow1_plain.objects.get(field1="TestParentLinkAndRelatedName")
|
|
|
|
# check that p is equal to the
|
|
self.assertIsInstance(p, TestParentLinkAndRelatedName)
|
|
self.assertEqual(p, t)
|
|
|
|
# check that the accessors to parent and sublass work correctly and return the right object
|
|
p = ModelShow1_plain.objects.non_polymorphic().get(field1="TestParentLinkAndRelatedName")
|
|
self.assertNotEqual(p, t) # p should be Plain1 and t TestParentLinkAndRelatedName, so not equal
|
|
self.assertEqual(p, t.superclass)
|
|
self.assertEqual(p.related_name_subclass, t)
|
|
|
|
# test that we can delete the object
|
|
t.delete()
|
|
|
|
def test_polymorphic__aggregate(self):
|
|
""" test ModelX___field syntax on aggregate (should work for annotate either) """
|
|
|
|
Model2A.objects.create(field1='A1')
|
|
Model2B.objects.create(field1='A1', field2='B2')
|
|
Model2B.objects.create(field1='A1', field2='B2')
|
|
|
|
# aggregate using **kwargs
|
|
result = Model2A.objects.aggregate(cnt=Count('Model2B___field2'))
|
|
self.assertEqual(result, {'cnt': 2})
|
|
|
|
# aggregate using **args
|
|
self.assertRaisesMessage(
|
|
AssertionError,
|
|
'PolymorphicModel: annotate()/aggregate(): ___ model lookup supported for keyword arguments only',
|
|
lambda: Model2A.objects.aggregate(Count('Model2B___field2'))
|
|
)
|
|
|
|
def test_polymorphic__complex_aggregate(self):
|
|
""" test (complex expression on) aggregate (should work for annotate either) """
|
|
|
|
Model2A.objects.create(field1='A1')
|
|
Model2B.objects.create(field1='A1', field2='B2')
|
|
Model2B.objects.create(field1='A1', field2='B2')
|
|
|
|
# aggregate using **kwargs
|
|
result = Model2A.objects.aggregate(
|
|
cnt_a1=Count(Case(When(field1='A1', then=1))),
|
|
cnt_b2=Count(Case(When(Model2B___field2='B2', then=1))),
|
|
)
|
|
self.assertEqual(result, {'cnt_b2': 2, 'cnt_a1': 3})
|
|
|
|
# aggregate using **args
|
|
# we have to set the defaul alias or django won't except a complex expression
|
|
# on aggregate/annotate
|
|
def ComplexAgg(expression):
|
|
complexagg = Count(expression) * 10
|
|
complexagg.default_alias = 'complexagg'
|
|
return complexagg
|
|
|
|
with self.assertRaisesMessage(AssertionError, 'PolymorphicModel: annotate()/aggregate(): ___ model lookup supported for keyword arguments only'):
|
|
Model2A.objects.aggregate(ComplexAgg('Model2B___field2'))
|
|
|
|
def test_polymorphic__expressions(self):
|
|
|
|
from django.db.models.functions import Concat
|
|
|
|
# no exception raised
|
|
result = Model2B.objects.annotate(val=Concat('field1', 'field2'))
|
|
self.assertEqual(list(result), [])
|
|
|
|
def test_null_polymorphic_id(self):
|
|
"""Test that a proper error message is displayed when the database lacks the ``polymorphic_ctype_id``"""
|
|
Model2A.objects.create(field1='A1')
|
|
Model2B.objects.create(field1='A1', field2='B2')
|
|
Model2B.objects.create(field1='A1', field2='B2')
|
|
Model2A.objects.all().update(polymorphic_ctype_id=None)
|
|
|
|
with self.assertRaises(PolymorphicTypeUndefined):
|
|
list(Model2A.objects.all())
|
|
|
|
def test_bulk_create_abstract_inheritance(self):
|
|
ArtProject.objects.bulk_create([
|
|
ArtProject(topic='Painting with Tim', artist='T. Turner'),
|
|
ArtProject(topic='Sculpture with Tim', artist='T. Turner'),
|
|
])
|
|
self.assertEqual(
|
|
sorted(ArtProject.objects.values_list('topic', 'artist')),
|
|
[('Painting with Tim', 'T. Turner'), ('Sculpture with Tim', 'T. Turner')]
|
|
)
|
|
|
|
def test_bulk_create_proxy_inheritance(self):
|
|
RedheadDuck.objects.bulk_create([
|
|
RedheadDuck(name='redheadduck1'),
|
|
Duck(name='duck1'),
|
|
RubberDuck(name='rubberduck1'),
|
|
])
|
|
RubberDuck.objects.bulk_create([
|
|
RedheadDuck(name='redheadduck2'),
|
|
RubberDuck(name='rubberduck2'),
|
|
Duck(name='duck2'),
|
|
])
|
|
self.assertEqual(
|
|
sorted(RedheadDuck.objects.values_list('name', flat=True)),
|
|
['redheadduck1', 'redheadduck2'],
|
|
)
|
|
self.assertEqual(
|
|
sorted(RubberDuck.objects.values_list('name', flat=True)),
|
|
['rubberduck1', 'rubberduck2'],
|
|
)
|
|
self.assertEqual(
|
|
sorted(Duck.objects.values_list('name', flat=True)),
|
|
['duck1', 'duck2', 'redheadduck1', 'redheadduck2', 'rubberduck1', 'rubberduck2'],
|
|
)
|
|
|
|
def test_bulk_create_unsupported_multi_table_inheritance(self):
|
|
with self.assertRaises(ValueError):
|
|
MultiTableDerived.objects.bulk_create([
|
|
MultiTableDerived(field1='field1', field2='field2')
|
|
])
|