Project has no test coverage

[robberwick]

Introducing a test suite will serve to validate the accurate functionality of the existing code and provide a safeguard against regressions during refactoring.

[robberwick]

I'm happy to pick this up. Unless there's an existing preference for test runners, I was planning to use pytest, if that's ok?

[PowerBroker2]

I have no preference. Whatever you would like to use is ok with me. Thanks!