Added a test for Model._meta._property_names.

tests/model_meta/models.py

@@ -39,6 +39,10 @@ class AbstractPerson(models.Model):
     class Meta:
         abstract = True
 
+    @property
+    def test_property(self):
+        return 1
+
 
 class BasePerson(AbstractPerson):
     # DATA fields

tests/model_meta/tests.py

@@ -272,3 +272,8 @@ class ParentListTests(SimpleTestCase):
         self.assertEqual(FirstParent._meta.get_parent_list(), [CommonAncestor])
         self.assertEqual(SecondParent._meta.get_parent_list(), [CommonAncestor])
         self.assertEqual(Child._meta.get_parent_list(), [FirstParent, SecondParent, CommonAncestor])
+
+
+class PropertyNamesTests(SimpleTestCase):
+    def test_person(self):
+        self.assertEqual(AbstractPerson._meta._property_names, frozenset(['pk', 'test_property']))