TST: pytest deprecation warnings GH17197

[swyoon]

Test parameters with marks are updated according to the updated API of
Pytest.
https://docs.pytest.org/en/latest/changelog.html#pytest-3-2-0-2017-07-30
https://docs.pytest.org/en/latest/parametrize.html

• closes TST: pytest deprecation warnings #17197
• tests added / passed
• passes git diff upstream/master -u -- "*.py" | flake8 --diff
• whatsnew entry

[gfyoung]

You don't need a whatsnew for this type of change.

[codecov]

Codecov Report

Merging #17253 into master will decrease coverage by 0.01%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master   #17253      +/-   ##
==========================================
- Coverage      91%   90.98%   -0.02%     
==========================================
  Files         162      162              
  Lines       49540    49540              
==========================================
- Hits        45085    45076       -9     
- Misses       4455     4464       +9

Flag	Coverage Δ
#multiple	88.77% <ø> (ø)	⬆️
#single	40.25% <ø> (-0.07%)	⬇️

Impacted Files	Coverage Δ
pandas/io/gbq.py	25% <0%> (-58.34%)	⬇️
pandas/core/frame.py	97.72% <0%> (-0.1%)	⬇️

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 95f4f7d...b5329da. Read the comment docs.

[gfyoung]

Build looks clean to me. @jreback

[jreback]

can you figure the earliest version of pytest that we should allow?

and want to add this to the ci instructions and note in the contrib docs (we aren't going to test with an older version though).

[jreback]

I didn't realize that this deprecation in pytest has a much more verbose syntax.

[swyoon]

Thanks for reviewing the PR.

pytest.param was introduced in pytest version 3.1.0, and therefore, the new test code only work with pytest version 3.1.0 or later. Errors occur when pytest version 3.0.7 (the latest release before 3.1.0) is used.
https://docs.pytest.org/en/latest/changelog.html#id59

will add notes to pandas/doc/contributing.md.

[jreback]

so need to update with pytest>=3.1.0

appveyor.yml: - cmd: conda create -n pandas python=%PYTHON_VERSION% cython pytest pytest-xdist
ci/install_circle.sh:time conda install -n pandas pytest || exit 1
ci/install_travis.sh:time conda install -n pandas pytest
ci/requirements_all.txt:pytest
ci/requirements_dev.txt:pytest

[swyoon]

will update appveyor.yml.

btw, it is strange that trevis build breaks after me rebasing onto the current master. TestClipboard.test_round_trip_frame_sep and TestClipboard.test_round_trip_frame failed, but it seems there's nothing much to do with this PR. Any ideas?

[jreback]

btw, it is strange that trevis build breaks after me rebasing onto the current master. TestClipboard.test_round_trip_frame_sep and TestClipboard.test_round_trip_frame failed, but it seems there's nothing much to do with this PR. Any ideas?

these occasionally fail, ignore

[swyoon]

appveyor.yml and other requirements files are updated, and the builds are green.

[jreback]

can you show how to mark a test as skip/xfail (rather than this note)

[jreback]

small comment on docs. otherwise lgtm. ping on green.

[swyoon]

added and updated pytest usage examples. hope it makes the documentation clear. builds are all green.

[jorisvandenbossche]

@swyoon Thanks for the nice PR!

[swyoon]

thank you all for kind reviewing. will hope to contribute to pandas again.