Loïc Faugeron has posted the next part of his "Mars Rover" series with the initialization of the project and taking some first steps with modules.

In this series we're going to build the software of a Mars Rover, according to the following specifications. It will allow us to practice the followings: Monolithic Repositories (MonoRepo), Command / Query Responsibility Segregation (CQRS), Event Sourcing (ES), Test Driven Development (TDD)

But first, we need to initialize our project.

He walks through the creation of the initial repository with a composer.json configuration and commits the initial version. From there he creates the "navigation" package that will handle write-only and read-only functionality to "drive" the rover around. He creates this package and a matching phpspec configuration file for testing the codebase. He then adds the navigation package to the main project though a branch merge.

Loïc Faugeron has started off a new series of posts with an introduction to a "Mars Rover" exercise that aims to help you refactor a "monolithic" codebase with CQRS, event sourcing and TDD practices.

In this introductory article, we're simply going to describe our Mars Rover specifications.

Note: This programming exercise originally comes from Dallas Hack Club, which is now unfortunately down. This Mars Rover kata has been adapted for the needs of this series.

He starts by outlining the goals the software will need to achieve and the complete functionality to provide. This is just the series kickoff though, so there's not much by way of code. Next in the series is the "MonoRepo" section and the setup of the actual project.