These are the slides of the presentation I gave at MinhoRB about test driven development.
There are a bunch of links to resources on this topic in one of the last slides.
You can also check the code samples from the talk on github.
I would like to thank Zach Holman for the inspiration for the talk design from his awesome blog post called Slide Design for Developers and for the talk that inpired it.
You can check more of his talks here, if you ever need inspiration.