1 files changed, 61 insertions, 0 deletions
diff --git a/tests/proxy_model_inheritance/tests.py b/tests/proxy_model_inheritance/tests.py
new file mode 100644
index 0000000000..239bc67809
--- /dev/null
+++ b/tests/proxy_model_inheritance/tests.py
@@ -0,0 +1,61 @@
+from __future__ import absolute_import
+
+import os
+import sys
+
+from django.conf import settings
+from django.core.management import call_command
+from django.db.models.loading import cache, load_app
+from django.test import TestCase, TransactionTestCase
+from django.test.utils import override_settings
+from django.utils._os import upath
+
+from .models import (ConcreteModel, ConcreteModelSubclass,
+    ConcreteModelSubclassProxy)
+
+
+@override_settings(INSTALLED_APPS=('app1', 'app2'))
+class ProxyModelInheritanceTests(TransactionTestCase):
+    """
+    Proxy model inheritance across apps can result in syncdb not creating the table
+    for the proxied model (as described in #12286).  This test creates two dummy
+    apps and calls syncdb, then verifies that the table has been created.
+    """
+
+    def setUp(self):
+        self.old_sys_path = sys.path[:]
+        sys.path.append(os.path.dirname(os.path.abspath(upath(__file__))))
+        for app in settings.INSTALLED_APPS:
+            load_app(app)
+
+    def tearDown(self):
+        sys.path = self.old_sys_path
+        del cache.app_store[cache.app_labels['app1']]
+        del cache.app_store[cache.app_labels['app2']]
+        del cache.app_labels['app1']
+        del cache.app_labels['app2']
+        del cache.app_models['app1']
+        del cache.app_models['app2']
+
+    def test_table_exists(self):
+        call_command('syncdb', verbosity=0)
+        from .app1.models import ProxyModel
+        from .app2.models import NiceModel
+        self.assertEqual(NiceModel.objects.all().count(), 0)
+        self.assertEqual(ProxyModel.objects.all().count(), 0)
+
+
+class MultiTableInheritanceProxyTest(TestCase):
+
+    def test_model_subclass_proxy(self):
+        """
+        Deleting an instance of a model proxying a multi-table inherited
+        subclass should cascade delete down the whole inheritance chain (see
+        #18083).
+
+        """
+        instance = ConcreteModelSubclassProxy.objects.create()
+        instance.delete()
+        self.assertEqual(0, ConcreteModelSubclassProxy.objects.count())
+        self.assertEqual(0, ConcreteModelSubclass.objects.count())
+        self.assertEqual(0, ConcreteModel.objects.count())