54 lines
2.0 KiB
Python
54 lines
2.0 KiB
Python
from __future__ import absolute_import, unicode_literals
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import os
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from django.core.management import call_command
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from django.test import TestCase, TransactionTestCase
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from django.test.utils import extend_sys_path
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from django.utils._os import upath
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from .models import (
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ConcreteModel, ConcreteModelSubclass, ConcreteModelSubclassProxy,
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ProxyModel,
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)
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class ProxyModelInheritanceTests(TransactionTestCase):
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"""
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Proxy model inheritance across apps can result in migrate not creating the table
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for the proxied model (as described in #12286). This test creates two dummy
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apps and calls migrate, then verifies that the table has been created.
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"""
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available_apps = []
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def test_table_exists(self):
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with extend_sys_path(os.path.dirname(os.path.abspath(upath(__file__)))):
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with self.modify_settings(INSTALLED_APPS={'append': ['app1', 'app2']}):
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call_command('migrate', verbosity=0, run_syncdb=True)
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from app1.models import ProxyModel
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from app2.models import NiceModel
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self.assertEqual(NiceModel.objects.all().count(), 0)
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self.assertEqual(ProxyModel.objects.all().count(), 0)
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class MultiTableInheritanceProxyTest(TestCase):
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def test_model_subclass_proxy(self):
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"""
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Deleting an instance of a model proxying a multi-table inherited
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subclass should cascade delete down the whole inheritance chain (see
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#18083).
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"""
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instance = ConcreteModelSubclassProxy.objects.create()
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instance.delete()
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self.assertEqual(0, ConcreteModelSubclassProxy.objects.count())
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self.assertEqual(0, ConcreteModelSubclass.objects.count())
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self.assertEqual(0, ConcreteModel.objects.count())
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def test_deletion_through_intermediate_proxy(self):
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child = ConcreteModelSubclass.objects.create()
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proxy = ProxyModel.objects.get(pk=child.pk)
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proxy.delete()
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self.assertFalse(ConcreteModel.objects.exists())
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self.assertFalse(ConcreteModelSubclass.objects.exists())
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