If you missed Part 1 of our Testing Angular 2 Apps series, I encourage you to take a look at it here. Note: Article is based on Angular 2 beta.2 Up-to-date Gist with examples for whole series is here: Angular 2 testing gist Starter project with setup for tests is here: https://github.com/wkwiatek/angular2-webpack2 Testing Services The easiest thing to start testing real Angular 2 thing is Service.