$ undefined in vows callback

[psd]

I'm keen to use tobi with vows, as outlined in this blog post

but am experiencing the same issue as one of the commenters with $ being undefined in the callback:

#!/usr/bin/env vows --spec

var vows   = require('vows');
var assert = require('assert');
var tobi   = require('tobi');

vows.describe('register').addBatch({
    'GET /register': {
        topic: function() {
            var browser = tobi.createBrowser(3000, 'localhost');
            browser.get("/register", this.callback);
        },
        'has a 200 status code': function(res, $) {
            res.should.have.status(200);
        },
        'is the Register page': function(res, $) {
            $('title').should.equal('Registration');
        }
    }
}).export(module);

results in:

♢ register

  GET /register
    ✓ has a 200 status code
    ✗ is the Register page
    TypeError: undefined is not a function
    at CALL_NON_FUNCTION (native)
    at Object.<anonymous> (/site/test/x.js:17:4)
    at runTest (/site/node_modules/vows/lib/vows.js:95:26)
    at EventEmitter.<anonymous> (/site/node_modules/vows/lib/vows.js:78:13)
    at EventEmitter.emit (events.js:81:20)
    at /site/node_modules/vows/lib/vows/context.js:31:52
    at /site/node_modules/vows/lib/vows/context.js:46:29
    at IncomingMessage.<anonymous> (/site/node_modules/tobi/lib/browser.js:264:9)
    at IncomingMessage.emit (events.js:81:20)
    at HTTPParser.onMessageComplete (http.js:133:23)
·
✗ Errored » 1 honored ∙ 1 errored (0.129s)

[psd]

This is issue with vows not passing more than one parameter. Vows assumes callbacks(err, res, ..) so if err is set, the remaining parameters are undefined.

A work-round is to not use the vows callback directly, but insert a null err value, e.g.::

    browser.get('/register', function (res, $) {
        this.callback(err, res, $);
    });

[cmeiklejohn]

This helped me get around the null problems, however the tobi objects now have no statusCode attribute.

 ♢ Test

  A hit
    ✗ should return 200
      » expected { external: undefined,
  history: [ '/' ],
  cookieJar: { cookies: [] },
  followRedirects: true,
  port: 80,
  host: 'www.google.com',
  client: 
   { bufferSize: 0,
     fd: null,
     type: null,
     allowHalfOpen: true,
     _writeImpl: [Function],
     _readImpl: [Function],
     _shutdownImpl: [Function],
     _state: 'connecting',
     ondrain: [Function],
     _outgoing: [ [Object] ],
     _events: { connect: [Function], close: [Function] },
     port: 80,
     host: 'www.google.com',
     _readWatcher: 
      { socket: [Circular],
        callback: [Function: onReadable] },
     destroyed: false,
     readable: false,
     _writeQueue: [],
     _writeQueueEncoding: [],
     _writeQueueFD: [],
     _writeQueueCallbacks: [],
     _writeWatcher: 
      { socket: [Circular],
        callback: [Function: onWritable] },
     writable: true,
     _connecting: true } } to have a property 'statusCode' // should.js:474