test('app should subscribe to online status action', () => { const nextState = reducer(appInitialState, setOnlineStatus(false)); expect(nextState).toHaveProperty('isOnline', false); expect(reducer(nextState, setOnlineStatus(true))).toHaveProperty('isOnline', true); });
const updateOnlineStatus = () => { store.dispatch(setOnlineStatus(navigator.onLine)); };