Simple testcase for rejected promise

promise_test.js

var http = require('http');
var count = 0;

function doit() {
    return new Promise((resolve, reject) => {
       setTimeout(() => reject('FAILED'), 100);
    });
}

http.createServer(function (req, res) {
  res.writeHead(200, {'Content-Type': 'text/plain'});

  doit()
  .then(console.log);
  //.catch(function(error) {
  //  console.error('An error occurred', error);
  //});

  res.end('Test promise unhandled rejection\n');
}).listen(8080);

console.log('loop.js: Node running, go to http://<machine>:8080/ or http://localhost:8080/ now');
console.log('pid ' + process.pid);

setInterval(function(){
    console.log('tick');
}, 10000);