title: How to change the path for spec files
body: <p>I am trying to write the test cases for the Angular 2 app from quickstart.</p>
  
  <p>Whenever I run the code, the spec files are always generated in the same folder, but I want to move to a custom testing folder. I am using SystemJS.</p>
  
  <p>For example, <code>app.component.spec.js</code> should move to the <code>testing</code> folder.</p>