Enables pytest-randomly, which has sat commented out in pyproject.toml
since the Pytest 9 upgrade. Tests now run in a different order every
session, so a test cannot quietly depend on another having run first.
The temp directory layout used by the tests was written out four separate
times: once in the documents conftest, once in the paperless checks tests,
once in a fixture local to the NFC upload tests, and once in the helper
behind the old paperless_environment context manager. Each copy covered a
different subset of the settings, so which directories a test actually got
depended on which copy it happened to reach.
The layout now lives in paperless_testing.dirs. build_paperless_dirs owns
where things go and creates them, dirs_settings maps them onto Django
setting names and is pure, and a paperless_dirs fixture in the root conftest
applies that mapping through pytest-django's settings fixture so every app
can reach it. Tests that need a second environment part way through a test
body use the paperless_environment context manager from the same module,
which expresses the identical layout through override_settings. The three
redundant implementations and the old media settings fixture are gone, and
their consumers now take paperless_dirs.
All four Django apps have test code in common, but the only place to put it
was the documents app's own tests package, so paperless, paperless_ai and
paperless_mail each reached across an app boundary to import helpers and
relied on fixtures that were only defined for the documents test path.
This adds a root src/conftest.py holding the fixtures every app needs and an
new src/paperless_testing package for shared helpers a test names
Trenton H