I just spend a couple of painful hours trying to add Alex Gorbachev’s syntax highlighter to DotNetBlogEngine. I’m thinking now that if it had some useful tests this would have been a lot easier. My confidence has been shaken somewhat after looking at the source code. It’s a shame that an open source .Net project that has gained such widespread acceptance lacks a good suite of unit tests. Unfortunately attempting to retrofit the existing codebase with tests at this point could be a very painstaking exercise.
Just for the record to add the scripts and the style sheets needed you have to some hacking in BlogBasePage.cs.