[TestFixture]
public class DurationAttributeTest
{
    [Test]
    [Duration(1,"This method succeeds (has 1 second to succeed)")]
    public void EmptyMethod() 
    {}

   [Test]
   [Duration(0,"This method will fail because it will  run in more that 0 seconds!")]
   public void EmptyMethodFails()    
   {
      Console.WriteLine("Take your time");
   }
}