Adam Wathan recently presented a talk at ZendCon 2015 about test-driven Laravel development. As the talk wasn't recorded he put together a condensed version of it and has posted it to his site.
This talk covers some common obstacles people run into when trying to get started with test driving real applications, including: what’s the very first test I should write, [...] how do I test routes, [and] should I start at the unit level or the acceptance level?
The video is embedded in the post but you can also watch it separately over on Vimeo. Adam also has some other videos for those interested in things like social logins with Laravel 5, polymorphism in the database layer and refactoring loops and conditionals.