Wxpython4 demo unit tests

wxPython Dev
#1

Are there unit tests for the demo?
I am experiencing a few dozen errors in the demo and I am thinking of fixing some of them and relative unit tests. Where would I start?

Fedora 38 KDE
python3-wxpython4-4.2.0-3.fc38.x86_64
python-wxpython4-doc-4.2.0-3.fc38.noarch
python3-3.11.6-1.fc38.x86_64

#2

There aren’t any unit tests for the demo. Feel free to submit pull requests if you have some fixes.