On May 15, 2023, at 3:11 PM, YiFei Zhu <zhuyifei1999@gmail.com> wrote:

having tests depend on user-supplied user-config.py is just
... broken. 

I hear you!

So, still trying to find my way around the test suite, I see appveyor.yml.  I don't know anything about Appveyor, but it looks like this is building a known user-config.py before kicking off a test run.  Is there some reason this couldn't be part of the global test setup for all tests?  I tried tracing back how the test suite works, but to be honest, I stopped reading once I found MetaTestCaseClass.