Testing Terraform code

Testing code is a crucial practice for developers, with Test-Driven Development (TDD) being a popular methodology where tests are written before the actual code. Even if TDD isn't followed, implementing unit and mock tests remains essential to ensure code reliability and predictability after changes. This text focuses on testing Terraform code using Terratest, a Golang-based framework that aids in Infrastructure-as-code testing, particularly for creating and managing Azure Virtual Networks. The process begins with understanding the significance of unit and mock tests, followed by writing Terraform code for deploying Azure resources like Network Security Groups and Virtual Networks. The narrative then introduces Terratest, highlighting its capabilities and guiding the reader through setting up a test in Golang to validate the Terraform code, ensuring resources are deployed and destroyed correctly. Finally, the text suggests exploring kitchen-terraform, a rising framework in the testing landscape, for further learning.