Under the hood and working with .Net, TDD, Software Design, and Agile Stuff
Roy Osherove has started a great series called Achieving And Recognizing Testable Software Designs that covers a lot of the main design issues and strategies for Test Driven Development.
In particular, he describes marking a method as virtual so you can create a subclass specific for unit testing that overrides the virtual method to remove a dependency on configuration within a unit test. This is a great strategy in certain situations (legacy code and code that is executed within a loop come to mind) that I don't think to use often enough.
I'm going to cover some of the same ground soon in "Jeremy's Laws of TDD", but I'd put money on Roy to finish first;)
About Jeremy D. Miller
Jeremy began his IT career writing "Shadow IT" applications to automate his engineering documentation, then wandered into software development because it looked like more fun. Jeremy previously worked as a systems architect building mission critical supply chain software for a Fortune 100 company and learned agile development practices as a .Net consultant at ThoughtWorks, one of the pioneers of agile development. Jeremy is the author of the open source StructureMap (http://structuremap.sourceforge.net) tool for Dependency Injection with .Net and the forthcoming StoryTeller (http://storyteller.tigris.org) tool for supercharged FIT testing in .Net. Jeremy's thoughts on just about everything software related can be found on his weblog "The Shade Tree Developer" at http://codebetter.com/blogs/jeremy.miller, part of the popular CodeBetter site. Jeremy is a Microsoft MVP for C#.
