linux-kernel - Re: [PATCH] lib: kunit: add test_min

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Date:   Tue, 4 Aug 2020 10:46:21 -0300
From:   Vitor Massaru Iha <vitor@...saru.org>
To:     peterz@...radead.org
Cc:     KUnit Development <kunit-dev@...glegroups.com>,
        "open list:KERNEL SELFTEST FRAMEWORK" 
        <linux-kselftest@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Brendan Higgins <brendanhiggins@...gle.com>,
        Shuah Khan <skhan@...uxfoundation.org>,
        linux-kernel-mentees@...ts.linuxfoundation.org,
        Ian Rogers <irogers@...gle.com>, mingo@...nel.org
Subject: Re: [PATCH] lib: kunit: add test_min_heap test conversion to KUnit

Hi Peter,

On Tue, Aug 4, 2020 at 10:25 AM <peterz@...radead.org> wrote:
>
> On Wed, Jul 29, 2020 at 06:57:17PM -0300, Vitor Massaru Iha wrote:
>
> > The results can be seen this way:
> >
> > This is an excerpt from the test.log with the result in TAP format:
> > [snip]
> > ok 5 - example
> >     # Subtest: min-heap
> >     1..6
> >     ok 1 - test_heapify_all_true
> >     ok 2 - test_heapify_all_false
> >     ok 3 - test_heap_push_true
> >     ok 4 - test_heap_push_false
> >     ok 5 - test_heap_pop_push_true
> >     ok 6 - test_heap_pop_push_false
> > [snip]
> >
> > And this from kunit-tool:
> > [snip]
> > [18:43:32] ============================================================
> > [18:43:32] ======== [PASSED] min-heap ========
> > [18:43:32] [PASSED] test_heapify_all_true
> > [18:43:32] [PASSED] test_heapify_all_false
> > [18:43:32] [PASSED] test_heap_push_true
> > [18:43:32] [PASSED] test_heap_push_false
> > [18:43:32] [PASSED] test_heap_pop_push_true
> > [18:43:32] [PASSED] test_heap_pop_push_false
> > [18:43:32] ============================================================
> > [18:43:32] Testing complete. 20 tests run. 0 failed. 0 crashed.
> > [18:43:32] Elapsed time: 9.758s total, 0.001s configuring, 6.012s
> > building, 0.000s running
> > [snip]
>
> I don't care or care to use either; what does dmesg do? It used to be
> that just building the self-tests was sufficient and any error would
> show in dmesg when you boot the machine.
>
> But if I now have to use some damn tool, this is a regression.

If you don't want to, you don't need to use the kunit-tool. If you
compile the tests as builtin and run the Kernel on your machine
the test result will be shown in dmesg in TAP format.

BR,
Vitor