title: FitNesse: Test that an element is not in a list?
body: <p>I'm using <a href="http://www.syterra.com/FitSharp.html" rel="nofollow">FitSharp</a> to test an application and have a question related to testing contents of lists. Testing that an element is present in a list is simple to do using, for example, a <a href="http://fitnesse.org/FitNesse.UserGuide.FitLibraryUserGuide.SubsetFixture" rel="nofollow">SubsetFixture</a> and could be written as this:</p>
  
  <pre><code>| Check that element is in list |
  | 5 |
  </code></pre>
  
  <p>But is there a way to write a fixture that tests if an element is <em>not</em> in a list?</p>
  
  <pre><code>| Check that element is not in list |
  | 5 |
  </code></pre>
  
  <p>I want the last table to pass only if 5 is not in the processed list.</p>