How do you test your cross platform applications? Carl and Richard talk to Paul Mooney about building software in .NET and Java and wanting to use a common set of testing protocols. Tricky, but possible! The conversation focuses in on abstractions, which are key to creating sufficient separation of functionality to allow you to insert testing code regardless of what language you work in. And it turns out you can write tests for multiple languages if you're careful. Java and .NET are more similar than we care to admit, and it opens the door to other approaches to testing. TDD is not platform specific!