[TIP] pytest fixture autouse question

[Pella,Chris]

> -----Original Message-----
> From: holger krekel [mailto:holger at merlinux.eu]
> Sent: January-04-13 4:57 AM
> To: Pella,Chris
> Cc: testing-in-python at lists.idyll.org
> Subject: Re: [TIP] pytest fixture autouse question
> 
> Hey Chris,
> 
> On Thu, Jan 03, 2013 at 14:20 -0500, Pella,Chris wrote:
> > I may have a misunderstanding of when session-level autouse fixtures are
> called. I am trying to create a session level fixture that runs before once per
> test session before any class setup is called.
> 
> It's a known issue of mixing xUnit and pytest style fixtures. See here for a
> discussion and the planned resolution:
> 
>     http://mail.python.org/pipermail/pytest-dev/2012-December/002172.html
> 
> For now, you can work around the issue like this::
> 
>     class TestX:
>         @pytest.fixture(scope="class", autouse=True)
>         def setup_on_class(self):
>             ...
> 
I now see a problem with this workaround ... e.g. If I run the following code it will throw an exception because cls.skip_me is no longer accessible. 

class TestThis():
    @pytest.fixture(scope="class", autouse=True)
    def setup_class(cls):
        #cls.skip_me = True 
        cls.skip_me = False

    def test_one(cls):
        if cls.skip_me == True:
            pytest.skip("can't test this")
        assert 1

    def test_two(cls):
        if cls.skip_me == True:
            pytest.skip("can't test this")
        assert 1

    def teardown_class(cls):
        pass


> This will execute after th "session" scoped installer that you describe below.
> 
> cheers,
> holger
> 
> > I have conftest.py file in the directory where the tests reside and in there I
> have some code that installs some client software on the test node.  We only
> want to install the client once per session for all the test classes that get
> executed.
> >
> > @pytest.fixture(scope="session",autouse=True)
> > def installer_fixture(request):
> >     """
> >     Installs client at the session level
> >     """
> >     print "installing"
> >     client = InstallClient()
> >     client.install()
> >     time.sleep(60)
> >
> >     def uninstall():
> >         """
> >         Uninstall client
> >         """
> >         client.uninstall()
> >
> >     request.addfinalizer(uninstall)
> >
> >
> > I assumed that this would execute prior to any test setup for a particular
> test class since it is a session level fixture, but I find that setup_class()
> executes before the clients get installed.
> >
> > e.g. with some toy test code I find  that the class setup gets executed
> before the fixture.  This is not the behaviour I wanted or expected.
> >
> > import pytest
> >
> >
> > class TestMe:
> >
> >     def setup_class(cls):
> >         pytest.set_trace()
> >         print "setup"
> >
> >     def test_one(cls):
> >         print "test one"
> >
> >     def teardown_class(cls):
> >         print "teardown"
> >
> >
> >
> >
> > Thanks,
> > chris
> >
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