The version attribute inside a craft (`craft.__version__`) is generated by Setuptools, so it's outside of the scope of the modules. The docs, however, rely on it for the version in the toolbar. This PR adds a standalone test module for the version string, and checks against common values. It mocks a function that I plan to add to `conf.py`, but isn't implemented yet. This is a first step toward fixing #532. ## Concerns There's nothing to guarantee `conf.py` will have this function. We're creating a value in the docs, then mocking the logic in an unrelated test, so there's no coupling. I think it would be more ideal if each craft could provide something like `craft.__version_major_minor__`, so the logic would reside in the app itself, not the docs. Is there a simple place to put that? --- - [x] I've followed the [contribution guidelines](https://github.com/canonical/starbase/blob/main/CONTRIBUTING.md). - [x] I've signed the [CLA](http://www.ubuntu.com/legal/contributors/). - [x] I've successfully run `make lint && make test`. - [ ] I've added or updated any relevant documentation. - [ ] In documents I changed, I [added a meta description](https://canonical-starflow.readthedocs-hosted.com/how-to/add-a-page-meta-description/) if one was missing. - [ ] I've updated the relevant release notes.