tests.js

var test = require('tape');
var request = require('supertest');
var url = 'localhost:3000';

test('Bad login tests', function (t) {
    var badLogin = function badLogin(username, password, message){
        return request(url).post('/login').send({
            username: username,
            password: password
        })
            .expect('Content-Type', /json/)
            .expect(200)
            .end(function (err, res) {
                t.error(err, 'Request should be successful');
                t.equal(res.body.success, false, message);
            })
    };
    Promise.all(
        [
            badLogin('cat', 'wrong-password', 'login with wrong password should fail'),
            badLogin('', 'wrong-password', 'login with no username should fail'),
            badLogin('cat', '', 'login with no password should fail'),
            badLogin('-=5%%>0-08-13;???<', 'wrong-password', 'login with silly username should fail'),
            badLogin(undefined, undefined, 'login with no credentials should fail')
        ])
        .then(function(){
            t.end()
        },function(err){
            t.error(err, 'no errors should have happened when requesting');
        });
});