title: Unittesting - Doing it wrong for plugins?
body: <p>I am unittesting my cakephp-plugins. However, I got this situation.
  My plugin-tests works well, but when I activate another plugin (who's fixtures (tables) are not loaded, my original tests won't pass anymore!</p>
  
  <p>How to 'fix' this? Is it the responsibility for the second plugin who let the other tests fail, or do I have to prepare myself in my main-plugin for situations like this?</p>
  
  <p>Hopefully I described the situation clear...</p>
  
  <h3>EDIT</h3>
  
  <p>Lets make it clear :)</p>
  
  <p>I have tested a controller in plugin 'A'. It passes all tests so thats great.
  But, when I load plugin 'B' in my system and I test the samen controller from plugin 'A' it fails because plugin 'B' wants a specific table who doesn't exist because my test didn't load it's fixture.</p>
  
  <p>This gave me the question: How do i have to test? Should I only focus on plugin 'A' our keep in mind that plugin 'B' could possibly join the system (which is very complicated)...</p>
  
  <p>Greetz</p>