An implementation of Conway's Game of Life in R with a unit test suite
This was inspired by Coderetreat 2015, which was all about test-driven development.
I realised I didn't know how to do it in my current main language, R! That has been remedied, and this is on GitHub for all the people who said "R? What's that?" as a minimal example of the language.
Shout out to Rookie Oven, as well as @dthjones and @jamesmaciver who showed me some of the magic of TDD
If you have R, run it, then you also need to install.packages("RUnit"), then source("lifeR.R") to load the program and run the tests, and finally runSim() to see those automata flood across your screen!