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Ruby is a great language. It was designed to foster happiness and productivity in developers, all the while providing tools that are effective and yet focused on simplicity. One of the tools available to the Rubyist is theRubyGems package manager. It enables us both to include “gems” (i.e. packaged code) that we can reuse in our own applications and to package our own code as a gem to share with the Ruby community. We’ll be focusing on the latter in this article.

I’ve written an open-source gem named Sinderella (available on GitHub), and in this article I’ll go through all of the steps I took to write the code (including the test-driven development process) and how I prepared it for release as a gem via RubyGems. I’ll also show you how to set up your tests to run through a continuous integration (CI) server using the popular Travis CI service.