Introduction Test code needs to be both run by computers and read by humans. It therefore needs to be well-factored and use the domain language. At the end of this tutorial, you will have seen how you can use use RSpec‘s custom matchers to write better tests that are DRY, quick to write and easy […]

Introduction In this tutorial, we will walk through the process of setting up a local environment for Clojure development using the Ansible configuration management tool. Ansible and Clojure are a perfect fit, as both place an emphasis on simplicity and building with small, focused components. While we will not cover the Clojure development process specifically, […]

Introduction Deploying a Ruby on Rails application involves a number of steps, such as copying source code files, running database migrations, pre or post-compiling assets and restarting the web server. Our goal as developer should be to automate this procedure down to a single command we can run at any time. There are tools that […]

Introduction Behavior-driven development (BDD) is a software development practice of working in a short feedback loop, where we consistently apply test-driven development to every new feature we are exploring and working on. For a detailed introduction to the practice of BDD, you should read our article Behavior-driven Development. This article focuses on applying these principles […]

Introduction Brakeman is a tool that scans a Ruby on Rails application for common vulnerabilities. It’s a static code analyzer that can help you find security problems before you release the application. Since you can introduce a vulnerability at any stage of you development process, it’s obvious that Brakeman should scan your application as often […]