Merge pull request #18 from claudiosdc/fix/nodeid-mut

Add test function to validate Transition node ID immutability

Author: dr-orlovsky

src/contract/nodes.rs

@@ -877,6 +877,15 @@ mod test {
         test_encode!((TRANSITION, Transition));
     }
 
+    #[test]
+    fn test_transition_node_id() {
+        let transition = Transition::strict_decode(&TRANSITION[..]).unwrap();
+        let mut concealed_transition = transition.clone();
+        concealed_transition.conceal_all();
+
+        assert_eq!(transition.node_id(), concealed_transition.node_id());
+    }
+
     #[test]
     fn test_node_attributes() {
         let genesis = Genesis::strict_decode(&GENESIS[..]).unwrap();