Ticket #12568: subfieldbase_fix_and_test.diff

modeltests/field_subclassing/tests.py

@@ +1 @@
+import inspect
 from django.test import TestCase
 
-from models import DataModel
+from models import DataModel, MyModel
 
 
 class CustomField(TestCase):
@@ -19 +20 @@
         d = DataModel.objects.get(pk=d.pk)
         self.assertTrue(isinstance(d.data, list))
         self.assertEqual(d.data, [1, 2, 3])
+    
+    def test_subfieldbase_plays_nice_with_module_inspect(self):
+        """
+        Custom fields should play nice with python standard module inspect.
+        
+        http://users.rcn.com/python/download/Descriptor.htm#properties
+        """
+        # even when looking for totally different properties, SubfieldBase it's
+        # non property like behaviour makes inspect crash.
+        strings = inspect.getmembers(MyModel, lambda x: type(x) is str)
+        known_strings = [('__doc__', 'MyModel(id, name, data)'), 
+            ('__module__', 'modeltests.field_subclassing.models')]
+        
+        self.assertEqual(strings, known_strings)
+
+        # should also not raise an exception
+        inspect.getmembers(MyModel)