Code coverage is not consistent

[fohrloop]

For some reason I'm getting 100% code coverage locally (on Ubuntu) when working with #278 but the GitHub Actions pipelines give lower code coverage.

• 1 line missing on linux
• 7 lines missing on mac
• no lines missing on windows

See: https://github.com/fohrloop/wakepy/actions/runs/9019169791/job/24781473430?pr=278

Task:

• Figure out why the code coverage is not same in pipelines and when running tox (or invoke test) locally
• Check that branch coverage is used everywhere (and not line coverage)

[fohrloop]

Hmm. Seems that the one line missing in linux tests was actually due to a failing test. The tests should probably just exclude some lines on mac. I don't think this is an issue after all. I'll close this and reopen if it's not easily fixed within #278.