When server is down, the error message is not useful

My test suit is hitting a server with a bunch of requests and then checks on responses. supertest is really good for making tests on response body and status code easy!

However, when the server is down for some reason the error message doesn’t allow to identify the source of the problem. Me and some other folks tripped over this a bunch of times 😃

var request = require('supertest');
request('localhost:6237')
  .get('/')
  .expect(200)
  .end(function(err, res) {
    if (err) throw err;
    console.log('Success', res.body);
  });

Running this given the server at localhost:6237 is down results in this stack trace:

$ node test.js
/path/to/test.js:8
    if (err) throw err;
                   ^
TypeError: Cannot read property 'status' of undefined

Is it something I can go ahead and fix or it’s intended functionality?

[parxier]

Is there any update on this one? Is it possible to merge #237 fix into latest version?

[bkeepers]

https://github.com/visionmedia/supertest/pull/446 should help reveal the underlying error here.