pytest-molecule 1.2.0

PyTest Molecule Plugin :: discover and run molecule tests

PyTest Molecule Plugin :: auto detects and runs molecule tests

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This plugin enables pytest discovery of all molecule.yml files inside the codebase and runs them as pytest tests.

Once you install pytest-molecule you should be able to just run pytest in order to run molecule on all roles and scenarios.

Optionally you can define MOLECULE_OPTS for passing extra parameters to each molecule call.

Discovered tests do have molecule driver and platforms added as markers, so you can selectively limit which test types to run:

# Lists all tests that uses docker
$ pytest --collect-only -m docker

# Runs scenarios with platform named centos7 and delegated driver:
$ pytest -m delegated -m centos7

Please note that at this moment molecule will run the entire scenario if the markers are platforms, this is not yet a way to limit which platforms are executed inside a specific scenario.

All tests are added the molecule marker.

This plugin also adds a new pytest option named --molecule-unavailable-driver=skip which can be used to tell it what to do when molecule drivers are not loading. Current default is skip but you can choose other marks like xfail or empty string if you want to disable this functionality.

Current implementation of this feature validates only docker and delegated drivers. Due to the potential destructive nature of delegated driver, scenarios running it will run only if Ansible detects one of the following variables as defined: zuul, use_for_testing.

Installation

You can install “pytest-molecule” via pip from PyPI:

$ PIP_NO_BUILD_ISOLATION=false pip install pytest-molecule

PIP_NO_BUILD_ISOLATION is needed only on ancient python distributions to workaround https://github.com/pypa/pip/issues/5229

Contributing

Contributions are very welcome. Tests can be run with tox, please ensure the coverage at least stays the same before you submit a pull request.

License

Distributed under the terms of the MIT license, “pytest-molecule” is free and open source software

Issues

If you encounter any problems, please file an issue along with a detailed description.