[pytest-dev] How to add delay before processing captured output

Nikolaus Rath Nikolaus at rath.org
Thu Feb 18 12:18:56 EST 2016

On Feb 18 2016, Bruno Oliveira <nicoddemus-Re5JQEeQqe8AvxtiuMwx3w at public.gmane.org> wrote:
> Hi Nokolaus,
> On Wed, Feb 17, 2016 at 7:07 PM Nikolaus Rath <Nikolaus-BTH8mxji4b0 at public.gmane.org> wrote:
>> Is there a way to add a delay that is (1) only incurred when a test
>> fails and (2) executed right after the test fails (ie., before the capfd
>> finalizer runs)?
> One way to execute something right after the test function is to implement
> the pytest_pyfunc_call, which is used to call python test functions:
> @pytest.mark.hookwrapper
> def pytest_pyfunc_call(pyfuncitem):
>     outcome = yield
>     failed = outcome.excinfo is not None
>     if failed:
>         wait_a_moment()
> You might even use marks to add this "wait time" only to marked functions,
> instead of all tests.
> I don't have time to look up and see if this will work with interaction
> with the capture plugin, but it's worth a shot.

Works perfectly, thanks!


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