Some weeks ago we did Luca Minudel's Tire Pressure Monitoring System refactoring kata as part of a mentoring program that Álvaro García and I were doing at Magento Barcelona. We had done this kata several times before in Java and in Ruby, presented it at some events (Refactoring legacy code driven by tests (Java version) at SCBCN, Refactoring legacy code driven by tests (Java version) at Gran Canaria Ágil, Refactoring legacy code driven by tests (Ruby version) at SCBCN, Refactoring legacy code...