Re: [PATCH 01/22] t/test-lib: allow skipping leak checks for passing tests

> Patrick Steinhardt <ps@pks.im> writes:
> 
> > With `GIT_TEST_PASSING_SANITIZE_LEAK=check`, one can double check
> > whether a memory leak fix caused some test suites to become leak free.
> > It is somewhat slow to execute though because it runs all of our test
> > suites with the leak sanitizer enabled. It is also pointless in most
> > cases, because the only test suites that need to be checked are those
> > which _aren't_ yet marked with `TEST_PASSES_SANITIZE_LEAK=true`.
> 
> What I understand from `t/README` the "check" value is used to test
> whether the presence or absence of `TEST_PASSES_SANITIZE_LEAK=true`
> matches the expectations. I think it's better to express that in the
> first sentence, because it sounds a bit misleading at the moment if you
> don't know that.
> 
> > Introduce a new value "check-failing". If set, we will only check those
> > tests which are not yet marked as leak free.
> 
> I would also mention this still has the effect that tests which *are*
> leak-free but do not have `TEST_PASSES_SANITIZE_LEAK=true` fail due to
> the use of "--invert-exit-code".