anchor.diff:  a(href="#top").to-top Back to top
   
   .l-hr
  -a#atp-intro
  +#atp-intro
   :marked
     # The Angular Testing Platform (ATP)
   
  
positive.code:   Consider adding ATP component tests such as this one.
  +makeExample('testing/ts/app/hero/hero-detail.component.spec.ts', 'title-case-pipe', 'app/hero/hero-detail.component.spec.ts (pipe test)')
  
  a#isolated-component-tests
  :marked
    ## Components
  
  
negative.code:     Write _Angular_ tests to validate the part as it interacts with Angular,
      updates the DOM, and collaborates with the rest of the application.
  
  #isolated-service-tests
  :marked
    ## Services
    Services are good candidates for isolated unit testing. 
  