For those that already are familiar with VSTS and the testing components, this ain't "Rocket Surgery", however, this is a a great introduction on how to perform testing on the reporting services components in SQL Server 2005. Particularly interesting is the use of the unit testing framework to programmatically test reports in other formats, such as excel or .PDF...

 

Using Visual Studio 2005 to Perform Load Testing on a SQL Server 2005 Reporting Services Report Server