Mastering React Test-Driven Development

Adding the reducer to the store

Before we can use the new reducer in our tests, we'll need to add it to the store. Open up src/store.js and modify it as follows. I have left out the existing imports in this code listing:

import { environmentReducer } from './reducers/environment';export const configureStore = (  storeEnhancers = [],  initialState = {}) => {  return createStore(    combineReducers({      script: withUndoRedo(logoReducer),      environment: environmentReducer    }),    initialState,    compose(      ...[        applyMiddleware(save), ...storeEnhancers      ]    )  );};