Ticket #25505: 25505-reproduced-issue.diff

tests/proxy_model_inheritance/models.py

@@ -6 +6 @@
     pass
 
 
-class ConcreteModelSubclass(ConcreteModel):
+class ProxyModel(ConcreteModel):
+    class Meta:
+        proxy = True
+
+
+class ConcreteModelSubclass(ProxyModel):
     pass
 
 

tests/proxy_model_inheritance/tests.py

@@ -4 +4 @@
 
 from django.core.management import call_command
 from django.test import TestCase, TransactionTestCase
-from django.test.utils import extend_sys_path
+from django.test.utils import extend_sys_path, CaptureQueriesContext
 from django.utils._os import upath
 
 from .models import (
     ConcreteModel, ConcreteModelSubclass, ConcreteModelSubclassProxy,
+    ProxyModel,
 )
+from django.db import connection
 
 
 class ProxyModelInheritanceTests(TransactionTestCase):
@@ -43 +45 @@
         self.assertEqual(0, ConcreteModelSubclassProxy.objects.count())
         self.assertEqual(0, ConcreteModelSubclass.objects.count())
         self.assertEqual(0, ConcreteModel.objects.count())
+
+    def test_deletion_through_intermediate_proxy(self):
+        child = ConcreteModelSubclass.objects.create()
+        proxy = ProxyModel.objects.get(pk=child.pk)
+        with CaptureQueriesContext(connection) as ctx:
+            proxy.delete()
+        print(ctx.captured_queries)
+        self.assertFalse(ConcreteModel.objects.exists())
+        print(ConcreteModelSubclass.objects.all())
+        self.assertFalse(ConcreteModelSubclass.objects.exists())