linux-kernel - Re: [PATCH v4] lib: add basic KUnit test for lib/math

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Message-ID: <YHBzA7SwH194ywRv@smile.fi.intel.com>
Date:   Fri, 9 Apr 2021 18:30:11 +0300
From:   Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To:     Daniel Latypov <dlatypov@...gle.com>
Cc:     brendanhiggins@...gle.com, davidgow@...gle.com,
        linux-kernel@...r.kernel.org, kunit-dev@...glegroups.com,
        linux-kselftest@...r.kernel.org, skhan@...uxfoundation.org
Subject: Re: [PATCH v4] lib: add basic KUnit test for lib/math

On Thu, Apr 08, 2021 at 06:40:01PM -0700, Daniel Latypov wrote:
> Add basic test coverage for files that don't require any config options:
> * gcd.c
> * lcm.c
> * int_sqrt.c
> * reciprocal_div.c
> (Ignored int_pow.c since it's a simple textbook algorithm.)

What about adding math.h test cases?

We have some macros there and it might be a good idea to test them, for example
that round_up() and roundup() produces the same output for the same (power of
two divisor) input.

> These tests aren't particularly interesting, but they
> * provide short and simple examples of parameterized tests
> * provide a place to add tests for any new files in this dir
> * are written so adding new test cases to cover edge cases should be easy

Yes, that's why I think macros also can be a good example how to test *macro*.

-- 
With Best Regards,
Andy Shevchenko