The sys.monitoring and import optimisation suggestions apply as-is.
If you use standard unittest discovery the third item might apply as well, though probably not to the same degree.
I don’t think unittest has any support for distribution so the xdist stuff is a no.
On the other hand you could use unit test as the API with Pytest as your test runner. Then you can also use xdist. And eventually migrate to the Pytest test api because it’s so much better.
I wwsn't familiar with this sys.monitoring option for coverage. Going to give it a try in my test suite. At the moment with docker testcontainers, gh actions test matrix for multiple python versions, and unit + regression + integration tests it is taking about 3-5 minutes.
Warning, there is a change in coverage 7.7.0 that disables sysmon support for coverage if using branch coverage _and_ a version of Python before 3.14alpha6.
If you use standard unittest discovery the third item might apply as well, though probably not to the same degree.
I don’t think unittest has any support for distribution so the xdist stuff is a no.
On the other hand you could use unit test as the API with Pytest as your test runner. Then you can also use xdist. And eventually migrate to the Pytest test api because it’s so much better.