vows and tobi not working, anyone?

vowstobi.coffee

# coffeescript issue

vows = require('vows')
tobi = require('tobi')
should = require('should')

getBrowser = () ->
  tobi.createBrowser(80, 'www.google.com')

vows
  .describe('Test')
  .addBatch
    'A hit':
      topic: () ->
        browser = getBrowser()
        browser.get('/', this.callback)
        return # avoid implicit return of results
      'should return 200': (res, $) ->
        res.should.have.status(200)
  .export(module)