/tests/regressiontests/m2m_regress/tests.py
https://code.google.com/p/mango-py/ · Python · 75 lines · 45 code · 20 blank · 10 comment · 0 complexity · d7f4ef172bfd33a61cde86f7a774e8db MD5 · raw file
- from django.core.exceptions import FieldError
- from django.test import TestCase
- from models import (SelfRefer, Tag, TagCollection, Entry, SelfReferChild,
- SelfReferChildSibling, Worksheet)
- class M2MRegressionTests(TestCase):
- def test_multiple_m2m(self):
- # Multiple m2m references to model must be distinguished when
- # accessing the relations through an instance attribute.
- s1 = SelfRefer.objects.create(name='s1')
- s2 = SelfRefer.objects.create(name='s2')
- s3 = SelfRefer.objects.create(name='s3')
- s1.references.add(s2)
- s1.related.add(s3)
- e1 = Entry.objects.create(name='e1')
- t1 = Tag.objects.create(name='t1')
- t2 = Tag.objects.create(name='t2')
- e1.topics.add(t1)
- e1.related.add(t2)
- self.assertQuerysetEqual(s1.references.all(), ["<SelfRefer: s2>"])
- self.assertQuerysetEqual(s1.related.all(), ["<SelfRefer: s3>"])
- self.assertQuerysetEqual(e1.topics.all(), ["<Tag: t1>"])
- self.assertQuerysetEqual(e1.related.all(), ["<Tag: t2>"])
- def test_internal_related_name_not_in_error_msg(self):
- # The secret internal related names for self-referential many-to-many
- # fields shouldn't appear in the list when an error is made.
- self.assertRaisesRegexp(FieldError,
- "Choices are: id, name, references, related, selfreferchild, selfreferchildsibling$",
- lambda: SelfRefer.objects.filter(porcupine='fred')
- )
- def test_m2m_inheritance_symmetry(self):
- # Test to ensure that the relationship between two inherited models
- # with a self-referential m2m field maintains symmetry
- sr_child = SelfReferChild(name="Hanna")
- sr_child.save()
- sr_sibling = SelfReferChildSibling(name="Beth")
- sr_sibling.save()
- sr_child.related.add(sr_sibling)
- self.assertQuerysetEqual(sr_child.related.all(), ["<SelfRefer: Beth>"])
- self.assertQuerysetEqual(sr_sibling.related.all(), ["<SelfRefer: Hanna>"])
- def test_m2m_pk_field_type(self):
- # Regression for #11311 - The primary key for models in a m2m relation
- # doesn't have to be an AutoField
- w = Worksheet(id='abc')
- w.save()
- w.delete()
- def test_add_m2m_with_base_class(self):
- # Regression for #11956 -- You can add an object to a m2m with the
- # base class without causing integrity errors
- t1 = Tag.objects.create(name='t1')
- t2 = Tag.objects.create(name='t2')
- c1 = TagCollection.objects.create(name='c1')
- c1.tags = [t1,t2]
- c1 = TagCollection.objects.get(name='c1')
- self.assertQuerysetEqual(c1.tags.all(), ["<Tag: t1>", "<Tag: t2>"])
- self.assertQuerysetEqual(t1.tag_collections.all(), ["<TagCollection: c1>"])