How do I test Redux applications effectively?

How do I test Redux applications effectively?

To test Redux applications, you can use tools like Jest and React Testing Library. Start by testing your reducers and actions.

What about testing components that use Redux?

For components, you can use the Provider from React Redux to wrap your component in tests, allowing you to pass a mock store.

Can you give me an example of a test case?

Sure! Here's a simple test case for a reducer:

import reducer from './reducer';

test('should return the initial state', () => {
  expect(reducer(undefined, {})).toEqual({});
});

How do I mock the Redux store in my tests?

You can create a mock store using redux-mock-store. This allows you to simulate the Redux store's behavior in your tests.