How do I test Redux with a mock store?

How do I test Redux with a mock store?

To test Redux with a mock store, you can use the redux-mock-store library. It allows you to create a mock store for testing your actions and reducers.

Can you show me a simple example?

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({});

You can then dispatch actions and test the state.

What about testing async actions?

For async actions, you can use middleware like redux-thunk along with your mock store. Just set it up like this:

import thunk from 'redux-thunk';
const mockStore = configureMockStore([thunk]);

This way, you can test your async actions effectively.

Are there any best practices for testing with a mock store?

Yes! Always ensure your tests are isolated, use descriptive test names, and clean up after each test to avoid state leakage.