package com.atlassian.plugin.event.listeners;
   
   import junit.framework.Assert;
   
   public class FailListener
   {
       private final Class<?> clazz;
   
       public FailListener(final Class<?> clazz)
      {
          this.clazz = clazz;
      }
  
      public void channel(final Object o)
      {
          if (clazz.isInstance(o))
          {
              Assert.fail("Event thrown of type " + clazz.getName());
          }
      }
  }