log a message when INVALID_MOVE is returned

boardgameio · Oct 25, 2019 · e9351dc · e9351dc
1 parent 3d02adf
commit e9351dc
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diff --git a/src/core/reducer.js b/src/core/reducer.js
@@ -140,6 +140,9 @@ export function CreateGameReducer({ game, multiplayer }) {
 
         // The game declared the move as invalid.
         if (G === INVALID_MOVE) {
+          error(
+            `invalid move: ${action.payload.type} args: ${action.payload.args}`
+          );
           return state;
         }
 

diff --git a/src/core/reducer.test.js b/src/core/reducer.test.js
@@ -51,6 +51,7 @@ test('move returns INVALID_MOVE', () => {
   };
   const reducer = CreateGameReducer({ game });
   let state = reducer(initialState, makeMove('A'));
+  expect(error).toBeCalledWith('invalid move: A args: undefined');
   expect(state._stateID).toBe(0);
 });