been searching for a while on how to test HttpContext and Cache in VS2005 Unit Tests, using the built in unit testing suite. Found this today..just add

TextWriter tw = new StringWriter();
HttpWorkerRequest wr = new SimpleWorkerRequest(“/webapp”, “c:\\inetpub\\wwwroot\\webapp\\”, “default.aspx”, “”, tw);
HttpContext.Current = new HttpContext(wr);

to you test method and the correct “using” statements, and boom – it works – up goes your code coverage % :)