mercurial.loader: Refactor remaining tests to use pytest (!27) · Merge requests · Platform / Development / swh-loader-mercurial

This did not touch any tests data. This now loads the loader fully through a pg-storage instance.

This stops using the BaseLoaderTest from swh.loader.core.

(coverage remained the same 82%)

Test Plan

tox

Migrated from D3448 (view on Phabricator)