Request the feature to apply indirect=True on particular argnames

[pytestbot]

Originally reported by: Alina Berdnikova (BitBucket: freakbelka, GitHub: freakbelka)

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According to http://pytest.org/latest/parametrize.html#the-metafunc-object, if indirect=True it'll
pass each argvalue to its corresponding fixture function.

It would be great if there was a way to specify which arguments are to be passed as params to corresponding fixtures and which are to be passed directly to test -- for example, via explicitly listing names of those indirectly-parametrized fixtures.
If argument name is listed in indirect= list, but corresponding fixture is nowhere to be found, an error should be raised.
And if the argument not listed in the indirect= clause, it should be passed directly as a test parameter despite corresponding fixture being defined or not.

I'm expecting this code

#!python

@pytest.fixture(scope='function')
def bar(request):
    return 'little %s' % request.param


@pytest.fixture(scope='function')
def foo(request):
    return 'great %s' % request.param


@pytest.mark.parametrize('foo, bar, spam', [('ololol', 'lalala', 'cococo'),
                                            ('pewpew', 'pawpaw', 'pafpaf')], 
                                            indirect=('bar', 'foo'))
def test_one(foo, bar, spam):
    print foo, bar, spam

to output this:

#!python

============================= test session starts ==============================
platform darwin -- Python 2.7.5 -- py-1.4.26 -- pytest-2.6.4 -- /Users/freakbelka/.venv/bin/python
plugins: yadt
collecting ... collected 2 items

test_1.py::test_one[ololol-lalala-cococo] great ololol little lalala cococo
PASSED
test_1.py::test_one[pewpew-pawpaw-pafpaf] great pewpew little pawpaw pafpaf
PASSED
=========================== 2 passed in 2.59 seconds ===========================

---

• Bitbucket: https://bitbucket.org/pytest-dev/pytest/issue/714

[martinpengellyphillips]

I encountered this limitation also. In general I want to be able to parametrize a test, but need to use a fixture result in the parametrization arguments so this proposal would help support that.

[pfctdayelise]

Thanks for the clear explanation. One question - presumably the test names should actually be

test_1.py::test_one[great ololol-little lalala-cococo]
test_1.py::test_one[great pewpew-little pawpaw-pafpaf]

?

[martinpengellyphillips]

@pfctdayelise That makes sense to me (though I'm not the OP).