title: How to simulate app restart in instrument test?
body: <p>I want to write a test for persistent storage. The implementation details can change, for example, the code can switch from <code>SharedPreferences</code> to file-based storage or <code>sqlite</code>, but an in memory only data structure should NOT work (because it might be forgotten between activity restarts).</p>
  
  <p>I want to add a automation test for this behavior, <strong>how should I stimulate app restart?</strong></p>