title: Test events with nunit
body: <p>I'm just starting with TDD and could solve most of the problems I've faced on my own. But now I'm lost: How can I check if events are fired? I was looking for something like <code>Assert.Raise</code> or <code>Assert.Fire</code> but there's nothing. Google was not very useful, most of the hits were suggestions like <code>foo.myEvent += new EventHandler(bar); Assert.NotNull(foo.myEvent);</code> but that proves nothing.</p>
  
  <p>Thank you!</p>