app.coffee

# app.coffee
 
require 'express'
 
class Server
  constructor: ->
    @app    = express()
    @server = http.createServer(@app)
    @io     = SocketIO.listen @server, logger: @logger
    @configure_app()
  
  start: (done) =>
    @server.listen 3000
    done?()
    
  stop: (done) =>
    @server.stop done
    
  configure_app: =>
    ...

login_page_spec.coffee

# spec/requests/login_page_spec.coffee

Server = require '../../app'
 
describe 'Login Page', ->
  beforeAll (done) ->
    @server = new Server
    @server.start done
  
  ...
  
  afterAll (done) ->
    @server.stop done