Passport + info test http://stackoverflow.com/questions/34367361/

server.js

var express       = require('express'),
    bodyParser    = require('body-parser'),
    passport      = require('passport'),
    LocalStrategy = require('passport-local').Strategy;

var app = express();

passport.use(new LocalStrategy(function (username, password, cb) {
  cb(null, false, {message: 'This can never succeed'});
}));

app.use(bodyParser.urlencoded({ extended: false }));
app.use(bodyParser.json());
app.use(passport.initialize());

app.post('/login', function(req, res, next) {
  passport.authenticate('local', function(err, user, info) {
    res.send(info);
  })(req, res, next);
});

var server = require('http').createServer(app);

server.listen(3000, function() {
  console.log('Server listening on 3000');
});

$ curl -X POST -H 'Content-type: application/json' -d '{"username": "none", "password": "wrong"}' http://localhost:3000/login 
{"message":"This can never succeed"}