title: ember Error: Assertion Failed: fullName must be a proper full name
body: <p>I got the following error while running a test with Ember.js:</p>
  
  <blockquote>
    <p>Promise rejected before "...": Assertion Failed: fullName must be a
    proper full name</p>
  </blockquote>
  
  <p>What is the meaning of this error?</p>