Open Sourcing Terratest: A Swiss Army Knife for Testing Infrastructure Code

Infrastructure as code (IaC) tools such as Terraform, Packer, and Docker offer a number of advantages: you can automate your entire provisioning and deployment process, you can store the state of your infrastructure in code (instead of a sysadmin’s head), you can use version control to track the history of how your infrastructure has changed, and so on. But there’s a catch: maintaining a large codebase of infrastructure code is hard. Most IaC tools are immature, modern architectures are complicated, and seemingly minor changes to infrastructure code sometimes cause severe bugs, such as wiping out a server, a database, or even an entire data center.

Source: gruntwork.io