What is Redux Mock Store and how do I use it?

What is Redux Mock Store and how do I use it?

Redux Mock Store is a library that helps you create a mock store for testing Redux applications. It allows you to simulate the Redux store's behavior without needing a full Redux setup.

Can you give me an example of how to set it up?

Sure! First, install the library using npm: npm install redux-mock-store. Then, you can create a mock store like this:

import configureMockStore from 'redux-mock-store';
const mockStore = configureMockStore();
const store = mockStore({});

How do I test actions with the mock store?

You can dispatch actions to the mock store and then check if the expected actions were dispatched. For example:

store.dispatch({ type: 'ACTION_TYPE' });
const actions = store.getActions();
expect(actions).toEqual([{ type: 'ACTION_TYPE' }]);

Are there any limitations I should be aware of?

Yes, the mock store does not implement the full Redux functionality, so it won't handle middleware or side effects. It's mainly for testing action creators and reducers.