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From:   Marco Elver <elver@google.com>
Date:   Tue, 27 Oct 2020 08:44:51 +0100
Message-ID: <CANpmjNMVjuNOh-P6dENhyk_+=AHqkZYugQ3KQS9T3qXTrUSXGA@mail.gmail.com>
Subject: Re: [PATCH v3 1/2] kunit: Support for Parameterized Testing
To:     Arpitha Raghunandan <98.arpi@gmail.com>
Cc:     Brendan Higgins <brendanhiggins@google.com>,
        skhan@linuxfoundation.org, Iurii Zaikin <yzaikin@google.com>,
        "Theodore Ts'o" <tytso@mit.edu>,
        Andreas Dilger <adilger.kernel@dilger.ca>,
        "open list:KERNEL SELFTEST FRAMEWORK" 
        <linux-kselftest@vger.kernel.org>,
        KUnit Development <kunit-dev@googlegroups.com>,
        LKML <linux-kernel@vger.kernel.org>,
        linux-kernel-mentees@lists.linuxfoundation.org,
        linux-ext4@vger.kernel.org
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On Tue, 27 Oct 2020 at 06:14, Arpitha Raghunandan <98.arpi@gmail.com> wrote:
[...]
> >> diff --git a/include/kunit/test.h b/include/kunit/test.h
> >> index a423fffefea0..16bf9f334e2c 100644
> >> --- a/include/kunit/test.h
> >> +++ b/include/kunit/test.h
> >> @@ -142,6 +142,12 @@ struct kunit_case {
> >>         void (*run_case)(struct kunit *test);
> >>         const char *name;
> >>
> >> +       /*
> >> +        * Pointer to test parameter generator function.
> >> +        * Used only for parameterized tests.
> >
> > What I meant was to give a description of the protocol, so that if
> > somebody wanted, they could (without reading the implementation)
> > implement their own custom generator without the helper macro.
> >
> > E.g. something like: "The generator function is used to lazily
> > generate a series of arbitrarily typed values that fit into a void*.
> > The argument @prev is the previously returned value, which should be
> > used to derive the next value; @prev is set to NULL on the initial
> > generator call. When no more values are available, the generator must
> > return NULL."
> >
>
> Oh okay. I am not sure if this is the best place to add documentation for this.

I think it doesn't hurt to add, but have a look at the comment above
this struct, which is already a kernel-doc comment. It probably makes
sense to move the comment there to describe the new variable.

Thanks,
-- Marco