anchor.diff:    `TestBed.createComponent` creates an instance of `BannerComponent` to test and returns a [fixture](#component-fixture).
   
     `TestBed.createComponent` closes the current `TestBed` instance to further configuration.
  -  You cannot call any more `TestBed` configuration methods, not `configureTestModule` 
  +  You cannot call any more `TestBed` configuration methods, not `configureTestingModule` 
     nor any of the `override...` methods. The `TestBed` throws an error if you try.
   
   .alert.is-important
  
positive.code: 
  :marked
    The `inject` function closes the current `TestBed` instance to further configuration.
    You cannot call any more `TestBed` configuration methods, not `configureTestModule`
    nor any of the `override...` methods. The `TestBed` throws an error if you try.
  
  .alert.is-important
  
negative.code: 
    ### _compileComponents_ closes configuration
    Calling `compileComponents` closes the current `TestBed` instance is further configuration.
    You cannot call any more `TestBed` configuration methods, not `configureTestingModule` 
    nor any of the `override...` methods. The `TestBed` throws an error if you try.
  
  .alert.is-important
  