title: How can I spec before_filters?
body: <p>I want to spec my controllers before_filter with rspec.
  I thought to use ActionController::Testing::ClassMethods#before_filters for it.</p>
  
  <p>I got these results in my rails c:</p>
  
  <pre><code>2.0.0p353 :006 &gt; ActionController::Base.singleton_class.send :include, ActionController::Testing::ClassMethods
  2.0.0p353 :003 &gt; EquipmentController.before_filters
  </code></pre>
  
  <p>=> [:process_action, :process_action] </p>
  
  <p>But in reality this is the filter on my action:</p>
  
  <pre><code>class EquipmentController &lt; ApplicationController
    before_filter :authenticate_user!
  </code></pre>
  
  <p>Any ideas?</p>