对以下 redux 异步操作进行单元测试的正确方法是什么?
const client = contentful.createClient(clientConfig);
export const fetchNavigation = () => {
return dispatch => {
return client.getEntries({content_type: 'navigation'})
.then((entries) => {
console.log('All entries for content_type = navigation')
dispatch(receiveNavigation(entries))
})
.catch(error => {
console.log('Something went wrong');
dispatch(fetchNavigationFailure(error));
});
}
}
我不知道如何自定义 client.getEntries 执行的 Web 请求响应正文。我认为用我自己的函数替换 getEntries 函数就可以了。但是,我不知道从哪里开始。
这是我写的单元测试:
const middlewares = [ thunk ]
const mockStore = configureMockStore(middlewares)
describe('fetchNavigation', () => {
it('creates RECEIVE_NAVIGATION when fetching navigation is done', () => {
// Here I should prepare the client.getEntries() returned promise
const expectedBodyResponse = { includes: ['do something', 'yay!'] }
const expectedActions = [
{ type: actions.RECEIVE_NAVIGATION, navigation: expectedBodyResponse }
]
const store = mockStore({ todos: [] })
return store.dispatch(actions.fetchNavigation())
.then(() => {
expect(store.getActions()).toEqual(expectedActions)
})
})
})