Ticket #16739: 16739-test.diff

tests/invalid_models_tests/test_models.py

@@ -426 +426 @@
 
 class ShadowingFieldsTests(IsolatedModelsTestCase):
 
+    def test_inheritance_chain_checking(self):
+        class A(models.Model):
+            foo = models.IntegerField()
+
+        class B(A):
+            pass
+
+        class C(B):
+            foo = models.IntegerField()
+
+        self.assertNotEqual(C.check(), [])
+
     def test_multiinheritance_clash(self):
         class Mother(models.Model):
             clash = models.IntegerField()