test suite for Solaar

Created by: kloczek

Everyting is moving away from setuppy test to pytest so it will be good to prepare solaar to pytest as well :)

+ /usr/bin/python3 -Bm pytest -ra
=========================================================================== test session starts ============================================================================
platform linux -- Python 3.8.8, pytest-6.2.2, py-1.10.0, pluggy-0.13.1
rootdir: /home/tkloczko/rpmbuild/BUILD/Solaar-1.0.5
plugins: flaky-3.6.1, forked-1.3.0, shutil-1.7.0, virtualenv-1.7.0, asyncio-0.14.0, expect-1.1.0, pyfakefs-4.1.0, cov-2.11.1, mock-3.5.1, httpbin-1.0.0, xdist-2.2.1, flake8-1.0.7, hypothesis-6.3.3, timeout-1.4.2
collected 0 items

========================================================================== no tests ran in 0.08s ===========================================================================