2. Obey the testing goat online book: http://www.obeythetestinggoat.com/
3. Neal Ford on test driven design (Requires a oreilly subscription): https://www.oreilly.com/library/view/neal-ford-on/9781449314... Here's the free PDF of the slides though, https://github.com/nealford/presentations/blob/master/Test%2...
Threads on if(why) testing is overrated: https://news.ycombinator.com/item?id=23778878 https://news.ycombinator.com/item?id=20309815