NodeJS HTTP server testing

index.js

var http = require('http'),
    bl = require('bl');


function handler(req, res) {
  req.pipe(bl(function (err, data) {
    if (err) {
      console.log(err)
      res.writeHead(400, {'Content-Type': 'text/plain'});
      res.end('Error receiving data');
      return False
    }
    res.writeHead(200, {'Content-Type': 'text/plain'});
    res.end(JSON.parse(data));
  }));
}

if (require.main == module) {
  http.createServer(handler).listen(8080);
}

module.exports = handler;

test.js

var handler = require('./'),
    through2 = require('through2');

var req = through2(),
    payload = {gh: 1, obj: 'data'};

req.url = 'localhost';

var res = {
    writeHead: function(code, type) { console.log(code, type); },
    end: function(data) { console.log(data); }
}

handler(req, res);
req.end(JSON.stringify(payload))