Test the socket interaction by mocking the socket

[gerw]

This provides almost 100% coverage of __init__.py. I am not sure about the missing lines. Sockets are weird, in particular checking whether a socket is closed / no longer usable.

Also the struct.error is not sensible in my opinion, but this should be discussed elsewhere.

Edit: And with the tests, I found a typo :)

[github-actions]

Coverage Report

File	Stmts	Miss	Cover	Missing
luxtronik
__init__.py	181	14	92%	42–43, 46–51, 210–212, 229–231, 246–248
__main__.py	21	21	0%	3–49
datatypes.py	275	1	99%	82
discover.py	40	34	15%	21–69
luxtronik/scripts
dump_changes.py	44	44	0%	5–85
dump_luxtronik.py	27	27	0%	5–52
TOTAL	675	141	79%

Tests	Skipped	Failures	Errors	Time
124	0 💤	0 ❌	0 🔥	3.969s ⏱️

[Bouni]

Nice 😎

I was tempted to implement tests for __init__.py but failed on mocking socket.socket, good work @gerw