Learning DevOps: Continuously Deliver Better Software

Using ServerSpec to test your Playbook

As mentioned in the introduction of this book, the DevOps methodology is built on some of the best practices already in use within software development. One of the more important ideas is the concept of unit testing; in essence, a test that ensures that the code performs the correct operations under certain scenarios. It has a two-fold advantage; first of course, you can test for code correctness before it even arrives in a test environment and you can also ensure that when you refactor code, you don't inadvertently break it. It is the second of these advantage that truly shines for Ansible Playbooks. Due to the way Ansible works, you can guarantee that a certain state will appear when you declare it; Ansible ...