Testing Express apps with random ports

mytest.coffee

# CoffeeScript version
http = require 'http'
express = require 'express'

app = express()
server = http.createServer(app).listen()
app.set 'port', server.address().port
app.get '/', (req, res) -> res.send hello:'world'

baseurl = 'http://127.0.0.1:' + app.get('port') + '/'
console.log 'Testing with URL', baseurl

request = require 'request'
assert = require('chai').assert

describe 'My Express App', ->
  it 'should return front page', (done) ->
    request baseurl, {json:true}, (err, response, body) ->
      assert.ifError err
      assert.equal response.statusCode, 200
      assert.equal body.hello, 'world'
      done()

mytest.js

// JavaScript version
var http = require('http');
var express = require('express');

var app = express();
var server = http.createServer(app).listen();
app.set('port', server.address().port);
app.get('/', function(req, res) { res.send({hello:'world'}); });

var baseurl = 'http://127.0.0.1:' + app.get('port') + '/';
console.log('Testing with URL', baseurl);

var request = require('request');
var assert = require('chai').assert;

describe('My Express App', function() {
  it('should return front page', function(done) {
    request(baseurl, {json:true}, function(err, response, body) {
      assert.ifError(err);
      assert.equal(response.statusCode, 200);
      assert.equal(body.hello, 'world');
      done();
    });
  });
});