Hi holger,
Thanks for your help.
> Hi Alex,
>
> On Mon, Dec 14, 2015 at 15:50 +0000, Alex Netes wrote:
>> Hello guys,
>>
>> I'm new to Pytest and I encounter something I cannot explain.
>
> I also hit many things which i can not explain, even with pytest and maybe
> even with this very mail.
>
I'll try to explain my intention in behind my code, instead of showing my nitty
code.
>> I'm trying to give fixture fixt_func() a parameter fixt_prm and expect the
>> fixture to be called only
>> once as it defined with 'class' scope, but the fixture is called twice as it
>> ignores the scope. What am I
>> missing?
>>
>>
>> @pytest.fixture(scope='class')
>> def fixt_func(request, resource, fixt_prm):
>> print fixt_prm
>>
>> class TestA():
>> @pytest.mark.parametrize('resource', ['x'], scope='class')
>> @pytest.mark.parametrize(fixt_prm ', ['x'], scope='class')
>> @pytest.mark.parametrize('prm', ['a', 'b'])
>> def test_a(self, prm, fixt_func)
>> assert True
>
> You are doing something i wasn't aware is possible. You pass a parameter to
> the fixture function
> fixt_func through parametrization but as a fixture.
> In any case, if we modify your example to:
>
> import pytest
> @pytest.fixture(scope='class')
> def fixt_func(request, fixt_prm):
> print "fixt_func"
>
> class TestA():
> @pytest.mark.parametrize('fixt_prm', ['x', 'y'], scope='class')
> def test_a(self, fixt_func):
> assert True
>
> this will also call fixt_func twice for the two executing tests.
> It's argubaly "correct" behaviour from a certain point of view.
> fixt_prm is class-scoped so each parameter instance exists as a different
> "class-level" value so we
> interpret it to mean each class-scoped fixture function needs to be executed
> with both values.
>
> Just imagine we wouldn't parametrize on the function directly but through a
> fixture function:
>
> import pytest
> @pytest.fixture(scope='class')
> def fixt_func(request, fixt_prm):
> print "fixt_func"
>
> @pytest.fixture(scope='class', params=["x", "y"])
> def fixt_prm(request):
> print "fixt_prm"
>
> class TestA():
> def test_a(self, fixt_func):
> assert True
>
> Here it's maybe more obvious why this executes both fixture functions twice.
>
> however, i am not sure about your precise example above. I can see why you
> expect the two
> different "prm" values (and thus test functions) to execute with the same
> class-level fixtures. Maybe
> others can chime in and say if they consider your example a bug or a "usual"
> behaviour.
>
Your examples makes sense. I'm trying to do something more complex and maybe I
look at it in a wrong
way. I want to define a fixture "fixt_func" so it would be able to receive a
parameter defined by different
test classes. Moreover I want "fixt_func" to have Class scope, so I can call
finalize when all tests of the
same class finished running. That's why I came up with the above "solution".
> holger
>
>
>
>
> > _______________________________________________
> > pytest-dev mailing list
> > pytest-dev@python.org
> > https://mail.python.org/mailman/listinfo/pytest-dev
>
>
> --
> about me: http://holgerkrekel.net/about-me/
> contracting: http://merlinux.eu
>
>
>
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