pytest-snob

pytest-snob is a pytest plugin that leverages the snob library (see https://github.com/alexpasmantier/snob) to filter tests to execute in a given application based on the contents of a range of commits

Rationale

Most of the time, running your full test suite is a waste of time and resources, since only a portion of the files has changed since your last CI run / deploy.

By leveraging snob, this pytest plugin will accurately determine which tests are relevant for a given changeset and only run those.

How does it work?

snob is a rust library (which we produce a python package from using Maturin / Py03) that efficiently parses the dependency graph of your python codebase and as such, can accurately determine which files are impacted by your changes.

For more information, see the snob github repository