backport angular 2 unit testing capabilities

• app logic migration is number 1 priority, what about testing?

currently we provide renderFactory which leverages angular 1 testing patterns.

We need to do better and support https://angular.io/docs/ts/latest/api/#!?apiFilter=core%2Ftesting

[JamesHenry]

Yeah, thanks @aciccarello! I would say it is definitely fair to assume that all Angular 1 projects have angular-mocks as a peerDependency already. If they don’t, they have bigger problems than ng-metadata utilities not working 😄

[aciccarello]

@michaelkrog, currently the easiest way to do this is to use the getInjectableName() function to get the dependency injection string and the angular $injector service to get the instance of your service.

In the future you will be able to use angular 2-like apis such as

import { inject } from 'ng-metadata/testing';
import { UserService } from './user.service';

inject([UserService], (userService: UserService) => {
  // Use instance of UserService in test
});