public class IrgendwasTest
    {      
        public IrgendwasTest()
        {
            string appVirtualDir = "/";
            string appPhysicalDir = @"C:\Users\";
            string page = @"localhost";
            string query = string.Empty;
            TextWriter output = null;        
            SimpleWorkerRequest workerRequest = new SimpleWorkerRequest(appVirtualDir, appPhysicalDir, page, query, output);
            HttpContext context = new HttpContext(workerRequest);
            HttpContext.Current = context;
        }
}