jest: Async example: Error: connect ECONNREFUSED 127.0.0.1:80

HI , I’m on the window 7, when i run npm test in examples/async, it produced errors below:

$ npm test

> @ test D:\study\jest\examples\async
> jest


 RUNS  __tests__\user-test.js
events.js:160
      throw er; // Unhandled 'error' event
      ^

Error: connect ECONNREFUSED 127.0.0.1:80
    at Object.exports._errnoException (util.js:1026:11)
    at exports._exceptionWithHostPort (util.js:1049:20)
    at TCPConnectWrap.afterConnect [as oncomplete] (net.js:1085:14)
npm ERR! Test failed.  See above for more details.

then, I checked the 80 port, but found nothing:

Administrator@USER-20150722FJ D:\study\jest\examples\async      
$ netstat -ano | findstr "127.0.0.1:80"

About this issue

Original URL
State: closed
Created 8 years ago
Reactions: 10
Comments: 16 (6 by maintainers)

Most upvoted comments

@dYb Did you run Jest with --no-cache once, or ran it for the first time with babel-jest > ‘9.0.3’? Which version of Node are you running?

I have this issue with all ^9.0.0 versions of babel-jest ( ‘9.0.1’, ‘9.0.2’, ‘9.0.3’). ‘10.0.1’ works and so does 16 and 17.

edit: tested here on a Windows 10 machine, babel-jest ^9.0.0 not working, 16 and 17 works fine.

frevib on Dec 9, 2016

@cpojer You’re right, this isn’t the issue, although it works somehow for me (I’m on OSX Sierra).

The example uses babel-jest ^9.0.0. Upgrading to 16.0.0 and running jest --no-cache once also solved the issue for me.

frevib on Nov 18, 2016

Same problem here. Looks like the request is actually fired and the mock is not used.

Changing the host is reflected in the error message:

export default function request(url) {
  return new Promise(resolve => {
    // This is an example of an http request, for example to fetch
    // user data from an API.
    // This module is being mocked in __mocks__/request.js
    http.get({
      host: '--TESTHOST--',
      path: url}, response => {
      let data = '';
      response.on('data', _data => data += _data);
      response.on('end', () => resolve(data));
    });
  });
}

events.js:160
      throw er; // Unhandled 'error' event
      ^

Error: getaddrinfo ENOTFOUND --TESTHOST-- --TESTHOST--:80
    at errnoException (dns.js:28:10)
    at GetAddrInfoReqWrap.onlookup [as oncomplete] (dns.js:76:26)

frevib on Oct 20, 2016