parametrize_with_cases can get argnames as list

[saroad2]

Fix #133

At the moment, the "argnames" parameter of parametrize_with_cases can only get strings as input, but it should except list of strings as well.

[codecov-commenter]

Codecov Report

Merging #132 into master will increase coverage by 0.04%.
The diff coverage is 96.87%.

@@            Coverage Diff             @@
##           master     #132      +/-   ##
==========================================
+ Coverage   90.96%   91.00%   +0.04%     
==========================================
  Files         115      116       +1     
  Lines        4536     4558      +22     
==========================================
+ Hits         4126     4148      +22     
  Misses        410      410              

Impacted Files	Coverage Δ
pytest_cases/fixture_parametrize_plus.py	89.38% <92.85%> (+0.13%)	⬆️
pytest_cases/case_parametrizer_new.py	89.73% <100.00%> (ø)
...test_cases/tests/cases/doc/test_parametrize_alt.py	100.00% <100.00%> (ø)

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[saroad2]

Wasn't sure where to add new tests to check the new ability. please let me know where the right place is, and I'll add the missing test.

[smarie]

Indeed, thanks @saroad2 !

From the pytest.mark.parametrize docstring, and from the pytest source code in ParameterSet._parse_parametrize_args, it seems that pytest performs an explicit check of isinstance(argnames, (tuple, list)).

Can you change your code so that

• tuples and lists are accepted
• but no other type is accepted (raise TypeError at the end of the elif statements)

Also can you please create a test file (tests/cases/doc/test_parametrize_alt.py) containing one test with a list and one test with a tuple ?

Thanks !

[smarie]

Looks good to me (I just made a small fix to the second error message).
thanks @saroad2 ! I'll make the release tomorrow