List of steps to reproduce:
coverage run -m unittest discover -vv -p \"*_tests.py\";

• https://codecov.io/gh/wikimedia/pywikibot/tree/9f355a706482186102a549b4d56f9a1d48155499

What happens?:
coverage with unittest only covers 33% of code whereas pytest covers 75%

• https://codecov.io/gh/wikimedia/pywikibot/tree/2e7e20bd7ff08984daa7c5571e7e590b2b8dbc85

Software version:

• pytest 6.1.1, 7.0.1, 7.1.1
• coverage 5.5, 6.2, 6.3.2