1) POST /home Login test should redirect to / after login:
   Error: the string "Not a valid BCrypt hash." was thrown, throw an Error :)

var should = require("should");
var app = require("../app");
var mongoose = require("mongoose");
var User = mongoose.model("User");
var request = require("supertest");
var agent = request.agent(app);
...
describe('POST /home', function() {
    before(function(done) {
        user = new User({
            email: "[email protected]",
            firstName: "John",
            lastName: "Doe",
            password: "strongPassword",
            username: "johndoe"
        });

        user.save(done);
    })

    describe('Login test', function() {
        it ('should redirect to / after login', function(done) {
            agent.post('/login')
                .send({
                    username: 'johndoe',
                    password: 'strongPassword'
                })
                .end(function(err, res) {
                    done();
                })
        })

        after(function(done) {
            User.remove().exec();
            return done();
        })
    })
})

UserSchema.methods.encryptPassword = function(password) {
    return bcrypt.hashSync(password, bcrypt.genSaltSync(10));
}

UserSchema.methods.validPassword = function(password) {
    return bcrypt.compareSync(password, this.password);
}