[TIP] parametrize a pytest finalizer

[Pella,Chris]

Hi Bruno,
That works well, although I don't understand why. I haven't used lambdas before,  but the signature is the same as for a normal function. I guess the anonymity makes pytest treat it differently.
Thanks a lot!

Chris

From: Bruno Oliveira [mailto:nicoddemus at gmail.com]
Sent: April-09-14 5:44 PM
To: Pella,Chris
Cc: testing-in-python at lists.idyll.org
Subject: Re: [TIP] parametrize a pytest finalizer

Hi Chris,

You can use a lambda function:

@pytest.fixture()
def test_fixture(request):

    def cleanup(cleanup_parameter):
        print cleanup_parameter

    try:
        raise
    except Exception:
        cleanup("Problem in fixture!")

    request.addfinalizer(lambda: cleanup("Cleaning up"))

Make sure to run the above using "-s" so no output is captured by pytest.

Hope this helps,

Best Regards,

On Wed, Apr 9, 2014 at 6:15 PM, Pella,Chris <Chris.Pella at safenet-inc.com<mailto:Chris.Pella at safenet-inc.com>> wrote:
It doesn't seem possible to pass arguments to a pytest finalizer. I can work around it this way, but it seems exceedingly ugly:

@pytest.fixture(scope = "class")
def test_fixture(request):

    global cleanup_parameter
    cleanup_parameter = "Cleaning up"

    def cleanup():
        global cleanup_parameter
        print cleanup_parameter

    try:
        raise
    except Exception:
        cleanup_parameter = "Problem in fixture!"
        cleanup()

    request.addfinalizer(cleanup)


Is there a better way?

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