title: Unit test the non-existence of a dom element
body: <p>In my directive, I use <code>element.remove()</code> under specific conditions to remove an element from the DOM.</p>
  
  <pre><code>it('should remove the &lt;img&gt; tag', function() {
  
     //expect(element.find('img')) ??
  });
  </code></pre>
  
  <p>How can I unit test this?</p>