Pytest 'yield tests are deprecated, and scheduled to be removed in pytest 4.0'

[adamchainz]

This test leads to a pytest-warning on Pytest 3.0+:

from nose_parameterized import parameterized

@parameterized([
    ('foo',)
])
def test_foo(foo):
    pass

Like:

============================================================== pytest-warning summary ==============================================================
WC1 /path/to/test_foo.py yield tests are deprecated, and scheduled to be removed in pytest 4.0
=================================================== 1 passed, 1 pytest-warnings in 0.10 seconds ====================================================

Maybe the strategy for use within pytest should be reworked.

[wolever]

Ohh thanks!

Do you happen to know much about how py.test’s parameterization works so you could suggest a better implementation?

I’ve dug into it a bit, but I wasn’t able to figure out to my satisfaction.

On August 24, 2016 at 6:09:00 AM, Adam Chainz (notifications@github.com) wrote:

This test leads to a pytest-warning on Pytest 3.0+:

from nose_parameterized import parameterized

@parameterized([
('foo',)
])
def test_foo(foo):
pass
Like:

============================================================== pytest-warning summary ==============================================================
WC1 /path/to/test_foo.py yield tests are deprecated, and scheduled to be removed in pytest 4.0
=================================================== 1 passed, 1 pytest-warnings in 0.10 seconds ====================================================

Maybe the strategy for use within pytest should be reworked.

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[adamchainz]

I'm afraid I don't but I've done some pytest work so I'm a bit a familiar with its internals.

[wolever]

Okay, update: it's super ugly, but I believe I have things working with pytest 4 in this branch: https://github.com/wolever/parameterized/tree/pytest4

There's still a bit of cleanup + documentation to do, and to double check that it will correctly handle edge cases, but I believe it should be okay.

[adamchainz]

Cool, thanks for your maintenance :)

[lingz]

Hey @wolever any chance you would be able to merge the pytest4 branch into master?

[asmeurer]

Any update on this? It looks like parameterized doesn't work at all with the latest pytest. Decorated tests are marked with XFAIL and give warnings like PytestCollectionWarning: yield tests were removed in pytest 4.0 - test_as_subindex_exhaustive will be ignored.

[wolever]

Hey folks! It's been a minute, but pytest4 should be wo

Please give it a try and let me know how it goes: pip install https://github.com/wolever/parameterized/archive/pytest4.zip

See also: https://github.com/wolever/parameterized/pull/116/files

If it all looks good, I'll merge + cut a new releas

[nwdenton]

@wolever do you think this will be merged in to a new release?

[p-sto]

Hi, still waiting for adding support. There's pytest 6 already.

[werdlerk]

I was also looking into why parameterized isn't working with Pytest.

Then I found it's included in Pytest (6). See for more info https://docs.pytest.org/en/6.2.x/parametrize.html

[luis-chaves-visa]

Any chance this can be merged?

[sandrotosi]

@wolever any chance the fix for this issue can be merged and a new release cut? in debian we have pytest7 and parametrized tests are failing when running them via pytest -- thanks!

[ulzha]

Hey hey! Bumping this one, just in case it's fallen behind the cracks

[scottgigante]

Bumping again! Thanks