Add unittest test suites

[whaleygeek]

There is some possible issue with importing, that breaks unittest discover mode, that I need to investigate.

I will probably write some unittest suites for the newarch work, and that will flush out this problem.

This might also be related: #22

[mytechnotalent]

Thanks @whaleygeek I will keep an eye out for updates.

[whaleygeek]

I have a single unit test working

40eff7c

Note that if I do this
python3 -m unittest discover

It runs my test but there are two errors, and a similar dump to yours.

if I do this instead, it works fine

python3 tests.py

NOTE:The added extract_ut_args() allows you to run selective tests

python3 tests.py TestButton.test_ButtonA

[mytechnotalent]

@whaleygeek I am able to get my unittests to pass however when running the python3 -m unittest discover those two of yours are failing. It is not a blocker by any means however would be great if we could get them working.