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473 lines
20 KiB
Python
473 lines
20 KiB
Python
import datetime
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from operator import attrgetter
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from django.core.exceptions import FieldError
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from django.db import models
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from django.db.models.fields.related import ForeignObject
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from django.test import SimpleTestCase, TestCase, skipUnlessDBFeature
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from django.test.utils import isolate_apps
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from django.utils import translation
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from .models import (
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Article, ArticleIdea, ArticleTag, ArticleTranslation, Country, Friendship,
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Group, Membership, NewsArticle, Person,
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)
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# Note that these tests are testing internal implementation details.
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# ForeignObject is not part of public API.
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class MultiColumnFKTests(TestCase):
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def setUp(self):
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# Creating countries
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self.usa = Country.objects.create(name="United States of America")
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self.soviet_union = Country.objects.create(name="Soviet Union")
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Person()
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# Creating People
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self.bob = Person()
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self.bob.name = 'Bob'
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self.bob.person_country = self.usa
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self.bob.save()
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self.jim = Person.objects.create(name='Jim', person_country=self.usa)
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self.george = Person.objects.create(name='George', person_country=self.usa)
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self.jane = Person.objects.create(name='Jane', person_country=self.soviet_union)
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self.mark = Person.objects.create(name='Mark', person_country=self.soviet_union)
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self.sam = Person.objects.create(name='Sam', person_country=self.soviet_union)
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# Creating Groups
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self.kgb = Group.objects.create(name='KGB', group_country=self.soviet_union)
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self.cia = Group.objects.create(name='CIA', group_country=self.usa)
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self.republican = Group.objects.create(name='Republican', group_country=self.usa)
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self.democrat = Group.objects.create(name='Democrat', group_country=self.usa)
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def test_get_succeeds_on_multicolumn_match(self):
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# Membership objects have access to their related Person if both
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# country_ids match between them
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membership = Membership.objects.create(
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membership_country_id=self.usa.id, person_id=self.bob.id, group_id=self.cia.id)
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person = membership.person
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self.assertEqual((person.id, person.name), (self.bob.id, "Bob"))
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def test_get_fails_on_multicolumn_mismatch(self):
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# Membership objects returns DoesNotExist error when the there is no
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# Person with the same id and country_id
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membership = Membership.objects.create(
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membership_country_id=self.usa.id, person_id=self.jane.id, group_id=self.cia.id)
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with self.assertRaises(Person.DoesNotExist):
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getattr(membership, 'person')
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def test_reverse_query_returns_correct_result(self):
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# Creating a valid membership because it has the same country has the person
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Membership.objects.create(
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membership_country_id=self.usa.id, person_id=self.bob.id, group_id=self.cia.id)
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# Creating an invalid membership because it has a different country has the person
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Membership.objects.create(
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membership_country_id=self.soviet_union.id, person_id=self.bob.id,
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group_id=self.republican.id)
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self.assertQuerysetEqual(
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self.bob.membership_set.all(), [
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self.cia.id
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],
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attrgetter("group_id")
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)
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def test_query_filters_correctly(self):
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# Creating a to valid memberships
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Membership.objects.create(
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membership_country_id=self.usa.id, person_id=self.bob.id, group_id=self.cia.id)
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Membership.objects.create(
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membership_country_id=self.usa.id, person_id=self.jim.id,
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group_id=self.cia.id)
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# Creating an invalid membership
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Membership.objects.create(membership_country_id=self.soviet_union.id,
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person_id=self.george.id, group_id=self.cia.id)
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self.assertQuerysetEqual(
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Membership.objects.filter(person__name__contains='o'), [
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self.bob.id
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],
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attrgetter("person_id")
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)
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def test_reverse_query_filters_correctly(self):
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timemark = datetime.datetime.utcnow()
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timedelta = datetime.timedelta(days=1)
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# Creating a to valid memberships
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Membership.objects.create(
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membership_country_id=self.usa.id, person_id=self.bob.id,
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group_id=self.cia.id, date_joined=timemark - timedelta)
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Membership.objects.create(
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membership_country_id=self.usa.id, person_id=self.jim.id,
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group_id=self.cia.id, date_joined=timemark + timedelta)
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# Creating an invalid membership
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Membership.objects.create(
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membership_country_id=self.soviet_union.id, person_id=self.george.id,
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group_id=self.cia.id, date_joined=timemark + timedelta)
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self.assertQuerysetEqual(
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Person.objects.filter(membership__date_joined__gte=timemark), [
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'Jim'
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],
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attrgetter('name')
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)
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def test_forward_in_lookup_filters_correctly(self):
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Membership.objects.create(membership_country_id=self.usa.id, person_id=self.bob.id,
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group_id=self.cia.id)
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Membership.objects.create(membership_country_id=self.usa.id, person_id=self.jim.id,
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group_id=self.cia.id)
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# Creating an invalid membership
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Membership.objects.create(
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membership_country_id=self.soviet_union.id, person_id=self.george.id,
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group_id=self.cia.id)
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self.assertQuerysetEqual(
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Membership.objects.filter(person__in=[self.george, self.jim]), [
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self.jim.id,
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],
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attrgetter('person_id')
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)
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self.assertQuerysetEqual(
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Membership.objects.filter(person__in=Person.objects.filter(name='Jim')), [
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self.jim.id,
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],
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attrgetter('person_id')
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)
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def test_double_nested_query(self):
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m1 = Membership.objects.create(membership_country_id=self.usa.id, person_id=self.bob.id,
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group_id=self.cia.id)
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m2 = Membership.objects.create(membership_country_id=self.usa.id, person_id=self.jim.id,
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group_id=self.cia.id)
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Friendship.objects.create(from_friend_country_id=self.usa.id, from_friend_id=self.bob.id,
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to_friend_country_id=self.usa.id, to_friend_id=self.jim.id)
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self.assertQuerysetEqual(Membership.objects.filter(
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person__in=Person.objects.filter(
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from_friend__in=Friendship.objects.filter(
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to_friend__in=Person.objects.all()))),
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[m1], lambda x: x)
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self.assertQuerysetEqual(Membership.objects.exclude(
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person__in=Person.objects.filter(
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from_friend__in=Friendship.objects.filter(
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to_friend__in=Person.objects.all()))),
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[m2], lambda x: x)
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def test_select_related_foreignkey_forward_works(self):
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Membership.objects.create(membership_country=self.usa, person=self.bob, group=self.cia)
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Membership.objects.create(membership_country=self.usa, person=self.jim, group=self.democrat)
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with self.assertNumQueries(1):
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people = [m.person for m in Membership.objects.select_related('person').order_by('pk')]
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normal_people = [m.person for m in Membership.objects.all().order_by('pk')]
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self.assertEqual(people, normal_people)
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def test_prefetch_foreignkey_forward_works(self):
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Membership.objects.create(membership_country=self.usa, person=self.bob, group=self.cia)
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Membership.objects.create(membership_country=self.usa, person=self.jim, group=self.democrat)
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with self.assertNumQueries(2):
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people = [
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m.person for m in Membership.objects.prefetch_related('person').order_by('pk')]
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normal_people = [m.person for m in Membership.objects.order_by('pk')]
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self.assertEqual(people, normal_people)
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def test_prefetch_foreignkey_reverse_works(self):
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Membership.objects.create(membership_country=self.usa, person=self.bob, group=self.cia)
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Membership.objects.create(membership_country=self.usa, person=self.jim, group=self.democrat)
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with self.assertNumQueries(2):
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membership_sets = [
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list(p.membership_set.all())
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for p in Person.objects.prefetch_related('membership_set').order_by('pk')]
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normal_membership_sets = [list(p.membership_set.all())
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for p in Person.objects.order_by('pk')]
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self.assertEqual(membership_sets, normal_membership_sets)
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def test_m2m_through_forward_returns_valid_members(self):
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# We start out by making sure that the Group 'CIA' has no members.
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self.assertQuerysetEqual(
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self.cia.members.all(),
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[]
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)
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Membership.objects.create(membership_country=self.usa, person=self.bob, group=self.cia)
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Membership.objects.create(membership_country=self.usa, person=self.jim, group=self.cia)
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# Let's check to make sure that it worked. Bob and Jim should be members of the CIA.
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self.assertQuerysetEqual(
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self.cia.members.all(), [
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'Bob',
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'Jim'
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], attrgetter("name")
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)
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def test_m2m_through_reverse_returns_valid_members(self):
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# We start out by making sure that Bob is in no groups.
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self.assertQuerysetEqual(
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self.bob.groups.all(),
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[]
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)
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Membership.objects.create(membership_country=self.usa, person=self.bob, group=self.cia)
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Membership.objects.create(membership_country=self.usa, person=self.bob,
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group=self.republican)
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# Bob should be in the CIA and a Republican
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self.assertQuerysetEqual(
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self.bob.groups.all(), [
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'CIA',
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'Republican'
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], attrgetter("name")
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)
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def test_m2m_through_forward_ignores_invalid_members(self):
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# We start out by making sure that the Group 'CIA' has no members.
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self.assertQuerysetEqual(
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self.cia.members.all(),
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[]
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)
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# Something adds jane to group CIA but Jane is in Soviet Union which isn't CIA's country
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Membership.objects.create(membership_country=self.usa, person=self.jane, group=self.cia)
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# There should still be no members in CIA
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self.assertQuerysetEqual(
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self.cia.members.all(),
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[]
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)
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def test_m2m_through_reverse_ignores_invalid_members(self):
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# We start out by making sure that Jane has no groups.
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self.assertQuerysetEqual(
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self.jane.groups.all(),
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[]
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)
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# Something adds jane to group CIA but Jane is in Soviet Union which isn't CIA's country
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Membership.objects.create(membership_country=self.usa, person=self.jane, group=self.cia)
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# Jane should still not be in any groups
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self.assertQuerysetEqual(
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self.jane.groups.all(),
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[]
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)
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def test_m2m_through_on_self_works(self):
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self.assertQuerysetEqual(
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self.jane.friends.all(),
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[]
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)
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Friendship.objects.create(
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from_friend_country=self.jane.person_country, from_friend=self.jane,
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to_friend_country=self.george.person_country, to_friend=self.george)
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self.assertQuerysetEqual(
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self.jane.friends.all(),
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['George'], attrgetter("name")
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)
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def test_m2m_through_on_self_ignores_mismatch_columns(self):
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self.assertQuerysetEqual(self.jane.friends.all(), [])
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# Note that we use ids instead of instances. This is because instances on ForeignObject
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# properties will set all related field off of the given instance
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Friendship.objects.create(
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from_friend_id=self.jane.id, to_friend_id=self.george.id,
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to_friend_country_id=self.jane.person_country_id,
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from_friend_country_id=self.george.person_country_id)
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self.assertQuerysetEqual(self.jane.friends.all(), [])
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def test_prefetch_related_m2m_forward_works(self):
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Membership.objects.create(membership_country=self.usa, person=self.bob, group=self.cia)
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Membership.objects.create(membership_country=self.usa, person=self.jim, group=self.democrat)
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with self.assertNumQueries(2):
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members_lists = [list(g.members.all())
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for g in Group.objects.prefetch_related('members')]
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normal_members_lists = [list(g.members.all()) for g in Group.objects.all()]
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self.assertEqual(members_lists, normal_members_lists)
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def test_prefetch_related_m2m_reverse_works(self):
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Membership.objects.create(membership_country=self.usa, person=self.bob, group=self.cia)
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Membership.objects.create(membership_country=self.usa, person=self.jim, group=self.democrat)
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with self.assertNumQueries(2):
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groups_lists = [list(p.groups.all()) for p in Person.objects.prefetch_related('groups')]
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normal_groups_lists = [list(p.groups.all()) for p in Person.objects.all()]
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self.assertEqual(groups_lists, normal_groups_lists)
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@translation.override('fi')
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def test_translations(self):
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a1 = Article.objects.create(pub_date=datetime.date.today())
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at1_fi = ArticleTranslation(article=a1, lang='fi', title='Otsikko', body='Diipadaapa')
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at1_fi.save()
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at2_en = ArticleTranslation(article=a1, lang='en', title='Title', body='Lalalalala')
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at2_en.save()
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self.assertEqual(Article.objects.get(pk=a1.pk).active_translation, at1_fi)
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with self.assertNumQueries(1):
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fetched = Article.objects.select_related('active_translation').get(
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active_translation__title='Otsikko')
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self.assertEqual(fetched.active_translation.title, 'Otsikko')
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a2 = Article.objects.create(pub_date=datetime.date.today())
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at2_fi = ArticleTranslation(article=a2, lang='fi', title='Atsikko', body='Diipadaapa',
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abstract='dipad')
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at2_fi.save()
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a3 = Article.objects.create(pub_date=datetime.date.today())
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at3_en = ArticleTranslation(article=a3, lang='en', title='A title', body='lalalalala',
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abstract='lala')
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at3_en.save()
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# Test model initialization with active_translation field.
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a3 = Article(id=a3.id, pub_date=a3.pub_date, active_translation=at3_en)
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a3.save()
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self.assertEqual(
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list(Article.objects.filter(active_translation__abstract=None)),
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[a1, a3])
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self.assertEqual(
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list(Article.objects.filter(active_translation__abstract=None,
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active_translation__pk__isnull=False)),
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[a1])
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with translation.override('en'):
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self.assertEqual(
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list(Article.objects.filter(active_translation__abstract=None)),
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[a1, a2])
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def test_foreign_key_raises_informative_does_not_exist(self):
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referrer = ArticleTranslation()
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with self.assertRaisesMessage(Article.DoesNotExist, 'ArticleTranslation has no article'):
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referrer.article
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def test_foreign_key_related_query_name(self):
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a1 = Article.objects.create(pub_date=datetime.date.today())
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ArticleTag.objects.create(article=a1, name="foo")
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self.assertEqual(Article.objects.filter(tag__name="foo").count(), 1)
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self.assertEqual(Article.objects.filter(tag__name="bar").count(), 0)
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with self.assertRaises(FieldError):
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Article.objects.filter(tags__name="foo")
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def test_many_to_many_related_query_name(self):
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a1 = Article.objects.create(pub_date=datetime.date.today())
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i1 = ArticleIdea.objects.create(name="idea1")
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a1.ideas.add(i1)
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self.assertEqual(Article.objects.filter(idea_things__name="idea1").count(), 1)
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self.assertEqual(Article.objects.filter(idea_things__name="idea2").count(), 0)
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with self.assertRaises(FieldError):
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Article.objects.filter(ideas__name="idea1")
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@translation.override('fi')
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def test_inheritance(self):
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na = NewsArticle.objects.create(pub_date=datetime.date.today())
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ArticleTranslation.objects.create(
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article=na, lang="fi", title="foo", body="bar")
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self.assertQuerysetEqual(
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NewsArticle.objects.select_related('active_translation'),
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[na], lambda x: x
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)
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with self.assertNumQueries(1):
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self.assertEqual(
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NewsArticle.objects.select_related(
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'active_translation')[0].active_translation.title,
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"foo")
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@skipUnlessDBFeature('has_bulk_insert')
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def test_batch_create_foreign_object(self):
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""" See: https://code.djangoproject.com/ticket/21566 """
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objs = [Person(name="abcd_%s" % i, person_country=self.usa) for i in range(0, 5)]
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Person.objects.bulk_create(objs, 10)
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def test_isnull_lookup(self):
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Membership.objects.create(membership_country=self.usa, person=self.bob, group_id=None)
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Membership.objects.create(membership_country=self.usa, person=self.bob, group=self.cia)
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self.assertQuerysetEqual(
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Membership.objects.filter(group__isnull=True),
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['<Membership: Bob is a member of NULL>']
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)
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self.assertQuerysetEqual(
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Membership.objects.filter(group__isnull=False),
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['<Membership: Bob is a member of CIA>']
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)
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class TestModelCheckTests(SimpleTestCase):
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@isolate_apps('foreign_object')
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def test_check_composite_foreign_object(self):
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class Parent(models.Model):
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a = models.PositiveIntegerField()
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b = models.PositiveIntegerField()
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class Meta:
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unique_together = (('a', 'b'),)
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class Child(models.Model):
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a = models.PositiveIntegerField()
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b = models.PositiveIntegerField()
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value = models.CharField(max_length=255)
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parent = ForeignObject(
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Parent,
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on_delete=models.SET_NULL,
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from_fields=('a', 'b'),
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to_fields=('a', 'b'),
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related_name='children',
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)
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self.assertEqual(Child._meta.get_field('parent').check(from_model=Child), [])
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@isolate_apps('foreign_object')
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def test_check_subset_composite_foreign_object(self):
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class Parent(models.Model):
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a = models.PositiveIntegerField()
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b = models.PositiveIntegerField()
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c = models.PositiveIntegerField()
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|
|
|
class Meta:
|
|
unique_together = (('a', 'b'),)
|
|
|
|
class Child(models.Model):
|
|
a = models.PositiveIntegerField()
|
|
b = models.PositiveIntegerField()
|
|
c = models.PositiveIntegerField()
|
|
d = models.CharField(max_length=255)
|
|
parent = ForeignObject(
|
|
Parent,
|
|
on_delete=models.SET_NULL,
|
|
from_fields=('a', 'b', 'c'),
|
|
to_fields=('a', 'b', 'c'),
|
|
related_name='children',
|
|
)
|
|
|
|
self.assertEqual(Child._meta.get_field('parent').check(from_model=Child), [])
|
|
|
|
|
|
class TestExtraJoinFilterQ(TestCase):
|
|
@translation.override('fi')
|
|
def test_extra_join_filter_q(self):
|
|
a = Article.objects.create(pub_date=datetime.datetime.today())
|
|
ArticleTranslation.objects.create(article=a, lang='fi', title='title', body='body')
|
|
qs = Article.objects.all()
|
|
with self.assertNumQueries(2):
|
|
self.assertEqual(qs[0].active_translation_q.title, 'title')
|
|
qs = qs.select_related('active_translation_q')
|
|
with self.assertNumQueries(1):
|
|
self.assertEqual(qs[0].active_translation_q.title, 'title')
|