Introduction

A listener sent us a very detailed email talking about his difficulty testing his GUI. Luca and I got into a big discussion about this and wanted to replay some of that discussion for you all. What what I would recommend is that in general, you treat the user interface framework the same way that you treat hardware. So we say divorce your code from the hardware, make it run on your PC or on a server and have as thin a shim as possible as thin and abstraction layer as possiblethat ties your code to the hardware.