Testing
Writing Ansible roles without tests is a recipe for broken playbooks. Molecule is the official testing framework for Ansible roles and collections. It lets you spin up containers, run your role against them, verify the results, and tear everything down — all with a single command. This guide covers Molecule with
IaC Testing
Basic Molecule usage—spin up a Docker container, run a playbook, verify with Ansible—covers maybe 30% of real-world scenarios. When your roles provision multiple nodes, interact with cloud APIs, or require OS-specific behavior, you need the advanced toolkit. This guide covers multi-instance testing, the delegated driver,
Testing
Ansible playbooks are often "tested" by running them against production and hoping. Molecule changes that — it provides a framework for testing roles and playbooks in isolated containers or VMs, verifying your automation actually works before it touches real infrastructure. What Is Molecule? Molecule is the official testing framework