node.js - Express.js Mocha testing having issues connecting to test db -

i trying test suite run within express.js app, first express.js app first time working mocha , unsure how set up.

here test

should = require 'should' assert = require 'assert' expect = require 'expect' request = require 'superagent' mongoose = require 'mongoose' config = require '../../config/config'   describe "post", ->   app = require('../../app')    beforeeach (done)->     mongoose.connect config.db, (err) ->       if err         console.log "error! #{err}"        done()    describe '/users/:id/activities', ->     'should return created document', (done) ->       request(app).post('http://localhost:3000/users/1/activities').send(         description: "hello world"         tags: "foo, bar"       ).set('content-type','application/json')       .end (e, res) ->         console.log(res.body.description)         expect(res.body.description).should.equal('hello world')         done() 

a couple of issues having are... 1) in test suite can't connect test db (in config file); 2) getting error message when trying post

1) post /users/:id/activities should return created document:      typeerror: object #<request> has no method 'post' 

can point me in right direction on how running properly?

the error getting trying connect mongodb error! error: trying open unclosed connection.

i running mocha suite running command

node_env=test mocha test/controllers/activities.test.coffee --compilers coffee:coffee-script/register -r spec 

edit

activities.coffee (routes)

express  = require 'express' router = express.router() mongoose = require 'mongoose' activity  = mongoose.model 'activity'  module.exports = (app) ->   app.use '/', router  router.post '/users/:id/activities', (req, res, next) ->   activity = activity(     user_id: req.params.id     description: req.body.description,     tags: req.body.tags   )    activity.save (err)->     if not err       res.json(activity)     else       res.json({ error: err })  router.get '/users/:id/activities/:activity_id', (req, res, next) ->   activity.findbyid req.params.activity_id, (err, activity) ->     if not err       res.json(activity)     else       res.json({ error: err }) 

app.js

require('coffee-script/register');  var express = require('express'),   config = require('./config/config'),   fs = require('fs'),   mongoose = require('mongoose');  mongoose.connect(config.db); var db = mongoose.connection; db.on('error', function () {   throw new error('unable connect database @ ' + config.db); });  var modelspath = __dirname + '/app/models'; fs.readdirsync(modelspath).foreach(function (file) {   if (/\.coffee$/.test(file)) {     require(modelspath + '/' + file);   } }); var app = express();  require('./config/express')(app, config);  app.listen(config.port);  exports.app = app; 

first, once have superagent pointing app variable holds routes, middlewares , on, there no need specify url in methods provided superagent. need provide route, so:

request(app)   .post('/users/123/activities')   .end(function (err, response) {   }); 

second, use before statement provided mocha instead of beforeeach, second 1 try connect mongo on every unit test have.

for first error

request has no method 'post' 

make sure have installed superagent , can find on node_modules folder.

hope helps!