👀 Views: 98 💬 Answers: 1 📅 Created: 2025-06-04

redux redux-thunk jest JavaScript

I'm trying to implement I'm stuck trying to After trying multiple solutions online, I still can't figure this out..... I'm having trouble with testing asynchronous actions in my Redux application using Redux Thunk and Jest. I have an action creator that makes an API call, and I'm trying to test it, but the test doesn't seem to wait for the promise to resolve. Here's the action creator: ```javascript // actions.js import axios from 'axios'; export const fetchData = () => async dispatch => { dispatch({ type: 'FETCH_DATA_REQUEST' }); try { const response = await axios.get('https://api.example.com/data'); dispatch({ type: 'FETCH_DATA_SUCCESS', payload: response.data }); } catch (error) { dispatch({ type: 'FETCH_DATA_FAILURE', payload: error.message }); } }; ``` And here’s my test: ```javascript // actions.test.js import configureMockStore from 'redux-mock-store'; import thunk from 'redux-thunk'; import { fetchData } from './actions'; import axios from 'axios'; import moxios from 'moxios'; const middlewares = [thunk]; const mockStore = configureMockStore(middlewares); describe('fetchData action', () => { let store; beforeEach(() => { moxios.install(); store = mockStore({}); }); afterEach(() => { moxios.uninstall(); }); it('creates FETCH_DATA_SUCCESS when fetching data has been done', async () => { const mockData = { data: 'some data' }; moxios.stubRequest('https://api.example.com/data', { status: 200, response: mockData, }); await store.dispatch(fetchData()); const actions = store.getActions(); expect(actions[0]).toEqual({ type: 'FETCH_DATA_REQUEST' }); expect(actions[1]).toEqual({ type: 'FETCH_DATA_SUCCESS', payload: mockData }); }); }); ``` The test fails with the following error: ``` Expected: { type: 'FETCH_DATA_SUCCESS', payload: { data: 'some data' } } Received: { type: 'FETCH_DATA_SUCCESS', payload: undefined } ``` I’ve tried using `async/await` in my test, but it still doesn't appear to wait for the action to finish before asserting. I verified that Moxios is correctly set up to intercept the request, but the payload in the success action is always `undefined`. Is there something I'm missing in how I’m handling the mock API call or the tests? Any help would be appreciated! For context: I'm using Javascript on macOS. Any ideas what could be causing this? What are your experiences with this? Thanks in advance! The stack includes Javascript and several other technologies. I appreciate any insights! Thanks in advance!