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我是 redux 测试的新手，并且一直在尝试对应用程序进行回填测试，如果这是使用 nock 和 redux-mock-store 进行测试的完全错误的方法，我感到非常抱歉。

//Action in authAction.js
export function fetchMessage() {
  return function(dispatch) {
    axios.get(ROOT_URL, {
      headers: { authorization: localStorage.getItem('token') }
    })
      .then(response => {
        console.log("hi")
        dispatch({
          type: FETCH_MESSAGE,
          payload: response.data.message
        });
      })
      .catch(response => {
        console.log(response)
        //callingRefresh(response,"/feature",dispatch);
      });
  }
}

这是方法，它似乎被调用了，但通常会导致标头不匹配的 nock 失败原因的捕获原因。

//authActions_test.js
import nock from 'nock'
import React from 'react'
import {expect} from 'chai'
import configureMockStore from 'redux-mock-store'
import thunk from 'redux-thunk'

const middlewares = [ thunk ]
const mockStore = configureMockStore(middlewares)

import * as actions from '../../src/actions/authActions';
const ROOT_URL = 'http://localhost:3090';

describe('actions', () => {

    beforeEach(() => {
        nock.disableNetConnect();
        localStorage.setItem("token", '12345');
    });

    afterEach(() => {
        nock.cleanAll();
        nock.enableNetConnect();
    });


  describe('feature', () => {

    it('has the correct type', () => {
      var scope = nock(ROOT_URL).get('/',{reqheaders: {'authorization': '12345'}}).reply(200,{ message: 'Super secret code is ABC123' });
      const store = mockStore({ message: '' });

      store.dispatch(actions.fetchMessage()).then(() => {
      const actions = store.getStore()
      expect(actions.message).toEqual('Super secret code is ABC123');
    })


    });
  });
});

即使标头被删除并且 nock 拦截了呼叫。我每次都收到这个错误

TypeError: Cannot read property 'then' of undefined
  at Context.<anonymous> (test/actions/authActions_test.js:43:24)
4

1 回答 1

1

您不会从 axios 返回将then调用链接到的承诺。

将thunk更改为：

//Action in authAction.js
export function fetchMessage() {
  return function(dispatch) {
    return axios.get(ROOT_URL, {
      headers: { authorization: localStorage.getItem('token') }
    })
      .then(response => {
        console.log("hi")
        dispatch({
          type: FETCH_MESSAGE,
          payload: response.data.message
        });
      })
      .catch(response => {
        console.log(response)
        //callingRefresh(response,"/feature",dispatch);
      });
  }
}

您可能还需要更改测试，使其在承诺解决之前不会通过。如何执行此更改取决于您使用的测试库。如果您使用的是摩卡咖啡，请查看此答案。

旁注：我不确定您是否有其他单元测试单独测试动作创建者和reducer，但这是测试这些的非常集成的方法。Redux 的一大优势是可以轻松地对机器的每个单独的齿轮进行相互隔离的测试。

于 2017-03-08T05:26:08.833 回答