Fixed test case failure

src/chain/state.rs

@@ -189,7 +189,7 @@ mod tests {
                 .check_consensus_state(&$new_state)
                 .expect_err("expected StateErrorKind::DoubleSign but succeeded");
 
-                assert_eq!(err.kind(), &StateErrorKind::DoubleSign)
+                assert!(matches!(err, StateError(StateErrorDetail::DoubleSignError(_), _)))
             }
         };
     }