Increase test coverage

[JeanChristopheMorinPerso]

Rez currently has a lot of tests, but our test coverage is only 60% at the time of writing this. Coverage can be visualized at https://app.codecov.io/gh/AcademySoftwareFoundation/rez/tree/main/.

The goal here is to add tests to cover critical pieces and help us reach at least 80% coverage.

Critical parts that need immediate attention, in no particular order:

• src/rezplugins/release_vcs (particularly the git plugin)
• src/rezplugins/release_hook (this currently has no tests).
• src/rez/package_cache.py (some tests, but could have more)
• src/rez/package_search.py (no tests)
• src/rez/package_test.py (has a few tests, but we need way more)
• src/rez/resolved_context.py (this is probably the part that needs the most attention with its 56% coverage)
• src/rez/utils (these will be easy wins because most of the code under that package is relatively easy to test)

Also critical, but much harder to test:

• src/rez/resolver.py and src/rez/solver.py (this is the brain. We have some solver tests, but we need way more. Before tackling this, please reach out to the TSC to make a plan)
• src/rez/cli (this is the CLI, which was not particularly designed to be tested, not impossible, but also not always easy to test)

[chinmaychahar]

Hey @JeanChristopheMorinPerso , I'd like to give this task a try, make an implementation plan and increase the code cov. Could it be assigned to me?

[JeanChristopheMorinPerso]

Hi @chinmaychahar, thanks for showing interest in helping us increase code coverage! Because this issue is mostly an umbrella, I would prefer not to assign it to anyone.

Which part are you interested in? Tell us here and that should be enough for tracking who is working on what.