bajtos

• API to group test cases into test suites, e.g. describe and it

• setup/teardown hooks (before, beforeEach, after, afterEach)

• Support for promises: test case returns a promise, the test runner waits until the promise is resolved

• Output formatters: junit/xunit for CI, spec-like for humans (a list of failed tests is printed again at the end)

• Run all tests in a single file, run a single test case, run a single test suite.

bajtos

Imagine a chat server persisting the messages, a simplified Slack chat. The domain is designed in the object-orientated style. In order to get realtime updates, we need to transport events emitted on the model constructor ("static" events) and on a model instance ("instance" events).

While it may not be immediately clear, the example is covering few other important LoopBack concepts too:

• authorization (loopback.token in REST)
• current context (loopback.context in REST)

What is not covered:

• file uploads and downloads

bajtos

function createLoopBackApp() {
  var app = express();
  // add loopback stuff

  app.phase('routes').use(function(req, res, next) {
    if (app._router) {
      app._router.handle(res, res, next);
    } else {
      next();
    }

bajtos

var jdb = require('./');
var ModelBuilder = jdb.ModelBuilder;
var DataSource = jdb.DataSource;
var Memory = require('./lib/connectors/memory');
var assert = require('assert');
var ID = 'custom-generated-id';

var memory = new DataSource({connector: Memory});
var modelBuilder = memory.modelBuilder;

bajtos

LoopBack Components - a strawman proposal

Component definition

Metadata

Component metadata is stored in package.json under loopback-component property.

bajtos

This is an extra exercise for the workshop Building a full-stack application with LoopBack and AngularJS.

Switch to MySQL

Now that we have the first version of our application ready, let's switch the storage backend from an in-memory database to MySQL.

1. Install loopback-connector-mysql

bajtos

This is an extra exercise for the workshop Building a full-stack application with LoopBack and AngularJS.

Add a custom model method

Let's write a method Whiskey.prototype.ratingStats that will provide a breakdown of rating data for a given whiskey. This method should be defined in common/models/whiskey.js. Below is a template, it's up to the reader to implement the statistical computation.

bajtos

The instructions and the sample-data file were moved to https://github.com/bajtos/loopback-workshop.

bajtos

# output of `dtruss -p {pid}` for /System/Library/CoreServices/launchservicesd
SYSCALL(args) 		 = return
workq_kernreturn(0x20, 0x0, 0x1)		 = 0 0
process_policy(0x1, 0xF, 0x7)		 = 0 0
process_policy(0x1, 0xF, 0x7)		 = 0 0
kevent64(0x3, 0x7FFF72E3F130, 0x1)		 = 1 0
workq_kernreturn(0x20, 0x0, 0x1)		 = 0 0
kevent64(0x3, 0x7FFF72E3F130, 0x1)		 = 1 0
workq_kernreturn(0x20, 0x0, 0x1)		 = 0 0
process_policy(0x1, 0xF, 0x7)		 = 0 0

bajtos

var loopback = require('loopback');
var boot = require('loopback-boot');

var app = module.exports = loopback();

// hack sharedCtor

var setup = loopback.PersistedModel.setup;
loopback.PersistedModel.setup = function(rec) {
  var extend = require('util')._extend;