acl: fix and test auto-owner functionality

circle/acl/models.py

@@ -214,10 +214,10 @@ class AclBase(Model):
         return cls.objects.filter(clsfilter)
 
     def save(self, *args, **kwargs):
-        if 'owner' in self and self.owner and 'owner' in self.ACL_LEVELS:
-            self.set_user_level(self.owner, 'owner')
-
         super(AclBase, self).save(*args, **kwargs)
+        if 'owner' in dict(self.ACL_LEVELS) and (hasattr(self, 'owner')
+                                                 and self.owner):
+            self.set_user_level(self.owner, 'owner')
 
     class Meta:
         abstract = True

circle/acl/tests/models.py

@@ -22,4 +22,5 @@ class Test2Model(AclBase):
         ('one', 'One'),
         ('two', 'Two'),
         ('three', 'Three'),
+        ('owner', 'owner'),
     )

circle/acl/tests/test_acl.py

@@ -180,3 +180,33 @@ class AclUserTest(TestCase):
             TestModel.get_objects_with_group_level('alfa', self.g1), [i1, i2])
         self.assertItemsEqual(
             TestModel.get_objects_with_group_level('alfa', self.g2), [i2])
+
+    def test_owner(self):
+        i = Test2Model.objects.create(normal2_field='Hello',
+                                      owner=self.u1)
+        self.assertTrue(i.has_level(self.u1, 'one'))
+        self.assertTrue(i.has_level(self.u1, 'owner'))
+        self.assertFalse(i.has_level(self.u2, 'owner'))
+
+    def test_owner_change(self):
+        i = Test2Model.objects.create(normal2_field='Hello',
+                                      owner=self.u1)
+        self.assertTrue(i.has_level(self.u1, 'one'))
+        self.assertTrue(i.has_level(self.u1, 'owner'))
+        self.assertFalse(i.has_level(self.u2, 'owner'))
+        i.owner = self.u2
+        i.save()
+        self.assertTrue(i.has_level(self.u1, 'one'))
+        self.assertTrue(i.has_level(self.u1, 'owner'))
+        self.assertTrue(i.has_level(self.u2, 'owner'))
+
+    def test_owner_change_from_none(self):
+        i = Test2Model.objects.create(normal2_field='Hello')
+        self.assertFalse(i.has_level(self.u1, 'one'))
+        self.assertFalse(i.has_level(self.u1, 'owner'))
+        self.assertFalse(i.has_level(self.u2, 'owner'))
+        i.owner = self.u2
+        i.save()
+        self.assertFalse(i.has_level(self.u1, 'one'))
+        self.assertFalse(i.has_level(self.u1, 'owner'))
+        self.assertTrue(i.has_level(self.u2, 'owner'))