test if game objectives are deleted recursively

app/models/tests/test_objective.py

@@ -45,5 +45,21 @@ class ObjectiveCase(unittest.TestCase):
         self.assertTrue(o1.owned_by(u1))
         self.assertFalse(o2.owned_by(u1))
 
+    def test_delete_objectives_recursively(self):
+        g1 = Game(name='TestGame')
+        o1 = Objective(name='o1')
+        o1.set_hash()
+        g1.objectives.append(o1)
+
+        db.session.add(g1)
+        db.session.commit()
+
+        self.assertNotEqual(Objective.query.filter_by(name='o1').first(), None)
+
+        db.session.delete(g1)
+        db.session.commit()
+
+        self.assertEqual(Objective.query.filter_by(name='o1').first(), None)
+
 if __name__ == '__main__':
     unittest.main(verbosity=2)