60;&#160;&#160; result.AssertSequenceEqual(1, 3, 2, 1);     <br />} </div>  <p>I&#39;ve kept the TestExtensions from MoreLINQ, despite NUnit coming with <a href="http://www.nunit.org/index.php?p=collectionAssert&amp;r=2.5">CollectionAssert</a>. I find the extension methods easier to work with for three reasons:</p>  <ul>   <li>They&#39;re extension methods, which helps to reduce the clutter </li>    <li>They can use a parameter array for the expected output, which makes the test simpler to express </li>    