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Date:   Sun, 9 Aug 2020 20:41:24 +0530
From:   Arpitha Raghunandan <98.arpi@...il.com>
To:     Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Cc:     brendanhiggins@...gle.com, skhan@...uxfoundation.org,
        kunit-dev@...glegroups.com, linux-kselftest@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        linux-kernel-mentees@...ts.linuxfoundation.org
Subject: Re: [PATCH] lib: Convert test_hexdump.c to KUnit

On 06/08/20 3:35 pm, Andy Shevchenko wrote:
> On Thu, Aug 06, 2020 at 03:14:40PM +0530, Arpitha Raghunandan wrote:
>> Converts test lib/test_hexdump.c to KUnit.
>> More information about KUnit can be found at
>> https://www.kernel.org/doc/html/latest/dev-tools/kunit/index.html.
>> KUnit provides a common framework for unit tests in the kernel.
> 
> ...
> 
>> -	if (memcmp(test, real, TEST_HEXDUMP_BUF_SIZE)) {
>> -		pr_err("Len: %zu row: %d group: %d\n", len, rowsize, groupsize);
>> -		pr_err("Result: '%s'\n", real);
>> -		pr_err("Expect: '%s'\n", test);
>> -		failed_tests++;
>> -	}
>> +	KUNIT_EXPECT_EQ(kunittest, 0, memcmp(test, real, TEST_HEXDUMP_BUF_SIZE));
> 
> 
> Ah, can you explain how user will see now what is being expected and what is in
> reality in the buffer? I'm not gonna accept such changes without showing in
> explicitly that user is not going to suffer of this change.
> 
I have sent another patch replacing KUNIT_EXPECT_EQ() with KUNIT_EXPECT_EQ_MSG() and KUNIT_EXPECT_NE() with KUNIT_EXPECT_NE_MSG(). These methods log what is being expected and what is in reality in the buffer in case of test failure similar to the original test.

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