How can I test Redux in a TypeScript application?

How can I test Redux in a TypeScript application?

To test Redux in a TypeScript application, you can use libraries like Jest and React Testing Library. Start by mocking your Redux store.

What are some best practices for testing Redux actions and reducers?

Best practices include testing actions by checking the action type and payload, and for reducers, ensure they return the correct state based on the action.

Can you show me an example of a test for a Redux reducer?

Sure! Here's a simple example:

import reducer from './reducer';
import { actionType } from './actions';

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

test('should handle actionType', () => {
  expect(reducer({}, { type: actionType })).toEqual({ key: 'value' });
});