3438 Disassociate users from label, when label is deleted

xivo_dao/resources/labels/dao.py

@@ -49,10 +49,17 @@ def create(label):
 
 
 def delete(label):
+    label = get(label.id)
+    _disassociate(label)
     Session.delete(label)
     Session.flush()
 
 
+def _disassociate(label):
+    label.user_features = []
+    Session.flush()
+
+
 def search(**parameters):
     rows, total = label_search.search(Session, parameters)
     return SearchResult(total, rows)

xivo_dao/resources/labels/tests/test_dao.py

@@ -88,3 +88,19 @@ class TestLabelExist(DAOTestCase):
         result = label_dao.search()
 
         assert_that(result, equal_to(expected))
+
+    def test_delete_associated_label(self):
+        label_row = self.add_label()
+        user = self.add_user(callerid='"John Doe"')
+
+        user.labels.append(label_row)
+
+        label_dao.delete(label_row)
+
+        expected_label = SearchResult(total=0, items=[])
+
+        result_label = label_dao.search()
+        result_user = user_dao.find_by_id_uuid(user.id)
+
+        assert_that(result_label, equal_to(expected_label))
+        assert_that(result_user.id, equal_to(user.id))