Nock, localhost, port, and redux-observable

Question

我具有带有节点/express

的模拟API设置

http://localhost:8080/api/lyric/

我正在使用Redux-Observable来获取JSON：

const fetchLyricEpic = action$ =>
action$.ofType(FETCH_LYRIC)
  .mergeMap(action =>
    ajax.getJSON('/api/lyric')
      .map(response => fetchLyricSuccess(response))
      .catch(error => Observable.of(fetchLyricFail(error)))
  )

问题是，当我测试时，我会遇到API错误，而不是使用nock：

200

beforeEach(() => {
  nock.disableNetConnect()
  nock.enableNetConnect('127.0.0.1:3000/')
})
afterEach(() => {
  nock.cleanAll()
  nock.enableNetConnect()
  epicMiddleware.replaceEpic(rootEpic)
})
test('it creates FETCH_SUCCESS when fetching the lyric has been done', () => {
  const payload = {
    status: 200,
    response: {
      'lyric': "Lyric"
    }
  }
  nock('127.0.0.1:3000/')
    .get('/api/lyric')
    .reply(200, payload, {'Content-Type': 'application/json'})

我正在尝试遵循我在Nock文档中阅读的内容以及问题列表中的内容，但是，我的Nock API呼叫一直失败。

Expected value to equal:
      [{"type": "FETCH_LYRIC"}, {"payload": {"lyric": "Lyric"}, "type": "FETCH_LYRIC_SUCCESS"}]
    Received:
      [{"type": "FETCH_LYRIC"}, {"payload": {}, "type": "FETCH_LYRIC_ERROR"}]

我应该接收FETCH_LYRIC_SUCCESS，而是我看到：

[ { type: 'FETCH_LYRIC' },
        { type: 'FETCH_LYRIC_ERROR',
          payload:
           SyntaxError
               at XMLHttpRequest.open (<user>/node_modules/jsdom/lib/jsdom/living/xmlhttprequest.js:486:15)
               at XMLHttpRequest.tryCatcher (<user>/node_modules/rxjs/util/tryCatch.js:6:31)
               at AjaxSubscriber.Object.<anonymous>.AjaxSubscriber.send (<user>/node_modules/rxjs/observable/dom/AjaxObservable.js:208:56)
               at new AjaxSubscriber (<user>/node_modules/rxjs/observable/dom/AjaxObservable.js:180:14)
               at AjaxObservable.Object.<anonymous>.AjaxObservable._subscribe (<user>/node_modules/rxjs/observable/dom/AjaxObservable.js:115:16)
               at AjaxObservable.Object.<anonymous>.Observable._trySubscribe (<user>/node_modules/rxjs/Observable.js:57:25)
               at AjaxObservable.Object.<anonymous>.Observable.subscribe (<user>/node_modules/rxjs/Observable.js:45:27)
               at MapOperator.Object.<anonymous>.MapOperator.call (<user>/node_modules/rxjs/operator/map.js:54:23)
               at Observable.Object.<anonymous>.Observable.subscribe (<user>/node_modules/rxjs/Observable.js:42:22)
               at MapOperator.Object.<anonymous>.MapOperator.call (<user>/node_modules/rxjs/operator/map.js:54:23) } ]

Answer 1

从错误消息中，它听起来与此处描述的问题相同：https：//github.com/tmpvar/jsdom/issues/1706

我正在从事一个项目，该项目使用摩卡咖啡和JSDON和酶来在节点中的虚拟DOM中运行我们的集成测试。现在我使用的是节点6.9.2，一切正常。我尝试使用7.4.0，但是运行测试，我遇到了错误

(几乎相同的堆栈跟踪(

如果确实如此，有些人报告说这是节点7.4.0的问题，并且升级到7.5.0或更高的问题解决了问题。

• ha！我刚刚将节点从7.4.0升级到新的7.5.0，问题似乎消失了。你可否确认？如果是这样，可以关闭此问题。 https://github.com/tmpvar/jsdom/issues/1706#issuecomment-276705307

• 7.5.0对我有用！
  https://github.com/tmpvar/jsdom/issues/1706#issuecomment-276774035