pytest-regressions

pytest-regressions is a Pytest plugin that provides a set of fixtures to simplify writing regression tests. It helps in maintaining tests that generate substantial or specific data files, such as dictionaries, dataframes, images, or numeric tables. The plugin stores expected data as baselines in a data directory (leveraging pytest-datadir) and compares future test runs against these baselines, providing detailed diffs upon failure. The current version is 2.10.0, and it maintains a regular release cadence with frequent minor updates.