Running tests locally does not run any tests

[mgiuca]

Steps to reproduce:

Per the instructions, check out the repository, then run:

python setup.py test

This prints a lot of output including several deprecation warnings, and then "NO TESTS RAN":

running test
WARNING: Testing via this command is deprecated and will be removed in a future version. Users looking for a generic test entry point independent of test runner are encouraged to use tox.
/usr/lib/python3/dist-packages/setuptools/command/test.py:193: _DeprecatedInstaller: setuptools.installer and fetch_build_eggs are deprecated.
!!

        ********************************************************************************
        Requirements should be satisfied by a PEP 517 installer.
        If you are using pip, you can try `pip install --use-pep517`.
        ********************************************************************************

!!
  ir_d = dist.fetch_build_eggs(dist.install_requires)
/usr/lib/python3/dist-packages/setuptools/command/test.py:194: _DeprecatedInstaller: setuptools.installer and fetch_build_eggs are deprecated.
!!

        ********************************************************************************
        Requirements should be satisfied by a PEP 517 installer.
        If you are using pip, you can try `pip install --use-pep517`.
        ********************************************************************************

!!
  tr_d = dist.fetch_build_eggs(dist.tests_require or [])
/usr/lib/python3/dist-packages/setuptools/command/test.py:195: _DeprecatedInstaller: setuptools.installer and fetch_build_eggs are deprecated.
!!

        ********************************************************************************
        Requirements should be satisfied by a PEP 517 installer.
        If you are using pip, you can try `pip install --use-pep517`.
        ********************************************************************************

!!
  er_d = dist.fetch_build_eggs(
running egg_info
writing OrbitalPy.egg-info/PKG-INFO
writing dependency_links to OrbitalPy.egg-info/dependency_links.txt
writing requirements to OrbitalPy.egg-info/requires.txt
writing top-level names to OrbitalPy.egg-info/top_level.txt
reading manifest file 'OrbitalPy.egg-info/SOURCES.txt'
adding license file 'LICENSE'
writing manifest file 'OrbitalPy.egg-info/SOURCES.txt'
running build_ext

----------------------------------------------------------------------
Ran 0 tests in 0.000s

NO TESTS RAN

On Ubuntu 24.04.2 LTS.

Proposed solution

I believe on modern Python it is discouraged to directly run setup without a virtual environment. I have managed to get everything working inside a venv which is much better for portability across systems and reproducibility. I will send a PR shortly containing updated setup instructions which work.