Readable is:

```javascript
beforeEach(inject(function($injector) {
    $scope = $injector.get('$rootScope');
    System = $injector.get('System');
}));
```
Concise is:
```javascript
beforeEach(inject(function($rootScope, _System_) {
    $scope = $rootScope.$new();
    System = _System_;
}));
```
I actually think I prefer the latter, haha.