linux-kernel - Re: [PATCH 1/3] kunit: Support skipped tests

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Message-ID: <CABVgOS=Tw1NkUfh1pDfo-3stAKqg_Pt0EtM7+rH2Qk6EUw2+Vw@mail.gmail.com>
Date:   Thu, 27 May 2021 16:21:56 +0800
From:   David Gow <davidgow@...gle.com>
To:     Marco Elver <elver@...gle.com>
Cc:     Brendan Higgins <brendanhiggins@...gle.com>,
        Alan Maguire <alan.maguire@...cle.com>,
        Shuah Khan <skhan@...uxfoundation.org>,
        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>,
        Alexander Potapenko <glider@...gle.com>,
        Andrey Konovalov <andreyknvl@...il.com>,
        Dmitry Vyukov <dvyukov@...gle.com>,
        kasan-dev <kasan-dev@...glegroups.com>
Subject: Re: [PATCH 1/3] kunit: Support skipped tests

On Wed, May 26, 2021 at 5:03 PM Marco Elver <elver@...gle.com> wrote:
>
> On Wed, May 26, 2021 at 01:11AM -0700, David Gow wrote:
> > The kunit_mark_skipped() macro marks the current test as "skipped", with
> > the provided reason. The kunit_skip() macro will mark the test as
> > skipped, and abort the test.
> >
> > The TAP specification supports this "SKIP directive" as a comment after
> > the "ok" / "not ok" for a test. See the "Directives" section of the TAP
> > spec for details:
> > https://testanything.org/tap-specification.html#directives
> >
> > The 'success' field for KUnit tests is replaced with a kunit_status
> > enum, which can be SUCCESS, FAILURE, or SKIPPED, combined with a
> > 'status_comment' containing information on why a test was skipped.
> >
> > A new 'kunit_status' test suite is added to test this.
> >
> > Signed-off-by: David Gow <davidgow@...gle.com>
> [...]
> >  include/kunit/test.h   | 68 ++++++++++++++++++++++++++++++++++++++----
> >  lib/kunit/kunit-test.c | 42 +++++++++++++++++++++++++-
> >  lib/kunit/test.c       | 51 ++++++++++++++++++-------------
> >  3 files changed, 134 insertions(+), 27 deletions(-)
>
> Very nice, thank you.
>
>         Tested-by: Marco Elver <elver@...gle.com>
>
> , with the below changes to test_kasan.c. If you would like an immediate
> user of kunit_skip(), please feel free to add the below patch to your
> series.
>
> Thanks,
> -- Marco
>

Thanks! I'll add this to the next version.

Cheers,
-- David

> ------ >8 ------
>
> From: Marco Elver <elver@...gle.com>
> Date: Wed, 26 May 2021 10:43:12 +0200
> Subject: [PATCH] kasan: test: make use of kunit_skip()
>
> Make use of the recently added kunit_skip() to skip tests, as it permits
> TAP parsers to recognize if a test was deliberately skipped.
>
> Signed-off-by: Marco Elver <elver@...gle.com>
> ---
>  lib/test_kasan.c | 12 ++++--------
>  1 file changed, 4 insertions(+), 8 deletions(-)
>
> diff --git a/lib/test_kasan.c b/lib/test_kasan.c
> index cacbbbdef768..0a2029d14c91 100644
> --- a/lib/test_kasan.c
> +++ b/lib/test_kasan.c
> @@ -111,17 +111,13 @@ static void kasan_test_exit(struct kunit *test)
>  } while (0)
>
>  #define KASAN_TEST_NEEDS_CONFIG_ON(test, config) do {                  \
> -       if (!IS_ENABLED(config)) {                                      \
> -               kunit_info((test), "skipping, " #config " required");   \
> -               return;                                                 \
> -       }                                                               \
> +       if (!IS_ENABLED(config))                                        \
> +               kunit_skip((test), "Test requires " #config "=y");      \
>  } while (0)
>
>  #define KASAN_TEST_NEEDS_CONFIG_OFF(test, config) do {                 \
> -       if (IS_ENABLED(config)) {                                       \
> -               kunit_info((test), "skipping, " #config " enabled");    \
> -               return;                                                 \
> -       }                                                               \
> +       if (IS_ENABLED(config))                                         \
> +               kunit_skip((test), "Test requires " #config "=n");      \
>  } while (0)
>
>  static void kmalloc_oob_right(struct kunit *test)
> --
> 2.31.1.818.g46aad6cb9e-goog
>