A quick repo I made to illustrate how Molecule for Ansible works with Testinfra as a verifier.
You can use this as a scaffold to create testing plans for your roles, playbooks or collections.
In the near future I'll try to add a more thoroughly documented repository.
For this particular example you'll need a running Docker installation.
Also, the following pip3 packages are needed. Most of them provide binaries that should be present on your $PATH, so configure your virtualenvs accordingly.
- ansible (v2.9.x preferred)
- molecule (v3 or higher)
- flake8
- ansible-lint
- yamllint
- testinfra
- docker
Molecule has several test matrixes. I'm just naming a few of them for simplicity's sake:
molecule lint: simply lint all the files in this repo (.pyand.yml) using flake8, ansible-lint and yamllint.molecule converge: creates the Docker images used in these tests and provisions them with themolecule/default/converge.ymlplaybook. The generated containers won't be destroyed and can be inspected after the process ends.molecule verify: executes all the testinfra tests on the running containers. You should usemolecule convergeprior to this.molecule test: this pretty much executes all possible tests in order and destroys the containers upon ending. This is what you usually want in your pipelines.molecule destroy: Use this when you are done and want to clear molecule's cache and any created running containers.
All of the previous commands should be executed from this repository's root directory.
Molecule allows for more platform options (cloud images, KVM, amongst them). This POC is not covering them ATM.
That really depends on the kind of technology you are using for your containers (see point above).
A Docker image could be enough if you are delegating your images to a cloud provider.
If you want to create Docker images you'll need to execute molecule from a Docker in Docker context.
If you need Vagrant you'll probably need something with virtualization capabilities, such as a Gitlab 'shell' Runner, or Jenkins environment.
Feel free to drop any request or issue it you have any doubts or you feel this POC could be improved.