20.9: test suite warnings

[kloczek]

============================================================================= warnings summary =============================================================================
tests/test_requirements.py: 2 warnings
tests/test_specifiers.py: 64 warnings
  /home/tkloczko/rpmbuild/BUILD/packaging-20.9/packaging/specifiers.py:283: DeprecationWarning: Creating a LegacyVersion has been deprecated and will be removed in the next major release
    warnings.warn(

tests/test_specifiers.py: 494 warnings
tests/test_version.py: 14879 warnings
  /home/tkloczko/rpmbuild/BUILD/packaging-20.9/packaging/version.py:127: DeprecationWarning: Creating a LegacyVersion has been deprecated and will be removed in the next major release
    warnings.warn(

-- Docs: https://docs.pytest.org/en/stable/warnings.html
========================================================================= short test summary info ==========================================================================
SKIPPED [1] tests/test_markers.py:98: sys.implementation does exist
SKIPPED [1] tests/test_markers.py:168: sys.implementation does exist
XFAIL tests/test_specifiers.py::TestSpecifier::test_specifier_explicit_legacy
======================================================= 29273 passed, 2 skipped, 1 xfailed, 15439 warnings in 58.14s =======================================================```

[uranusjr]

This is more or less expected since LegacyVersion is indeed deprecated, but the test suite should therefore silence it.

[pradyunsg]

#407 is a different approach to fixing this. :)

[kloczek]

A so looks like thi ticket can be closed as duplicated.
Thx. Closing.