Read original post at Kevin Logan's Blog
I just read Leveraging Windows 8 Features with MVVM by Brent Edwards in the July 2013 MSDN magazine. I had skipped it before, because I wasn't as interested in building a Windows 8 app. This article is a great walk through of how to use MVVM to achieve a unit testable application. He also introduces Charmed which is the examples in an open source library. It looks very useful.