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Message-ID: <a224bf47-f567-3ae7-725a-f39a4511e49d@collabora.com>
Date: Mon, 21 Jun 2021 18:56:16 -0300
From: André Almeida <andrealmeid@...labora.com>
To: Daniel Latypov <dlatypov@...gle.com>,
Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Cc: Christoph Hellwig <hch@....de>, linux-kernel@...r.kernel.org,
Brendan Higgins <brendanhiggins@...gle.com>,
linux-kselftest@...r.kernel.org, kunit-dev@...glegroups.com,
Shuah Khan <shuah@...nel.org>, ~lkcamp/patches@...ts.sr.ht,
nfraprado@...labora.com, leandro.ribeiro@...labora.com,
Vitor Massaru Iha <vitor@...saru.org>, lucmaga@...il.com,
David Gow <davidgow@...gle.com>, tales.aparecida@...il.com
Subject: Re: [PATCH v4 1/1] lib: Convert UUID runtime test to KUnit
Às 18:29 de 21/06/21, Daniel Latypov escreveu:
> On Mon, Jun 21, 2021 at 6:32 AM André Almeida <andrealmeid@...labora.com> wrote:
>>
>> Remove custom functions for testing and use KUnit framework. Keep the
>> tested functions and test data the same.
>>
>> Current test threat (g/u)uid_parse and (g/u)uid_equal as different test
>> cases. Make both functions being part of the same test case, given the
>> dependency regarding their results. This reduces the tests cases from 6
>> cases to 4, while keeping the test coverage the same. Given that we have
>> 3 strings for each test case, current test output notifies 18 tests
>> results, and the KUnit output announces 12 results.
>>
>> Signed-off-by: André Almeida <andrealmeid@...labora.com>
>
> Reviewed-by: Daniel Latypov <dlatypov@...gle.com>
>
> Looks good to me.
>
> I haven't been keeping up, but this won't get picked up until KUnit
> prints test statistics?
Good question, I don't think this was decided.
Andy, what do you think?
> But even if that's the case or not, this patch would be fine as-is.
> It'd be strictly an KUnit-internal thing to print test stats.
>
>> ---
>> lib/Kconfig.debug | 8 ++-
>> lib/Makefile | 2 +-
>> lib/test_uuid.c | 137 +++++++++++++++++++---------------------------
>> 3 files changed, 64 insertions(+), 83 deletions(-)
>>
>> diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug
>> index 678c13967580..606ec5e2586d 100644
>> --- a/lib/Kconfig.debug
>> +++ b/lib/Kconfig.debug
>> @@ -2188,8 +2188,12 @@ config TEST_BITMAP
>>
>> If unsure, say N.
>>
>> -config TEST_UUID
>> - tristate "Test functions located in the uuid module at runtime"
>> +config UUID_KUNIT_TEST
>> + tristate "Unit test for UUID" if !KUNIT_ALL_TESTS
>> + depends on KUNIT
>> + default KUNIT_ALL_TESTS
>> + help
>> + Tests parsing functions for UUID/GUID strings.
>>
>> config TEST_XARRAY
>> tristate "Test the XArray code at runtime"
>> diff --git a/lib/Makefile b/lib/Makefile
>> index 2cc359ec1fdd..cc19048961c0 100644
>> --- a/lib/Makefile
>> +++ b/lib/Makefile
>> @@ -85,7 +85,6 @@ obj-$(CONFIG_TEST_STATIC_KEYS) += test_static_key_base.o
>> obj-$(CONFIG_TEST_PRINTF) += test_printf.o
>> obj-$(CONFIG_TEST_BITMAP) += test_bitmap.o
>> obj-$(CONFIG_TEST_STRSCPY) += test_strscpy.o
>> -obj-$(CONFIG_TEST_UUID) += test_uuid.o
>> obj-$(CONFIG_TEST_XARRAY) += test_xarray.o
>> obj-$(CONFIG_TEST_PARMAN) += test_parman.o
>> obj-$(CONFIG_TEST_KMOD) += test_kmod.o
>> @@ -354,5 +353,6 @@ obj-$(CONFIG_LIST_KUNIT_TEST) += list-test.o
>> obj-$(CONFIG_LINEAR_RANGES_TEST) += test_linear_ranges.o
>> obj-$(CONFIG_BITS_TEST) += test_bits.o
>> obj-$(CONFIG_CMDLINE_KUNIT_TEST) += cmdline_kunit.o
>> +obj-$(CONFIG_UUID_KUNIT_TEST) += test_uuid.o
>>
>> obj-$(CONFIG_GENERIC_LIB_DEVMEM_IS_ALLOWED) += devmem_is_allowed.o
>> diff --git a/lib/test_uuid.c b/lib/test_uuid.c
>> index cd819c397dc7..30f350301e6d 100644
>> --- a/lib/test_uuid.c
>> +++ b/lib/test_uuid.c
>> @@ -1,21 +1,20 @@
>> +// SPDX-License-Identifier: (GPL-2.0-or-later OR BSD-2-Clause)
>> /*
>> - * Test cases for lib/uuid.c module.
>> + * Unit tests for lib/uuid.c module.
>> + *
>> + * Copyright 2016 Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
>> + * Copyright 2021 André Almeida <andrealmeid@...eup.net>
>> */
>> -#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
>> -
>> -#include <linux/init.h>
>> -#include <linux/kernel.h>
>> -#include <linux/module.h>
>> -#include <linux/string.h>
>> +#include <kunit/test.h>
>> #include <linux/uuid.h>
>>
>> -struct test_uuid_data {
>> +struct test_data {
>> const char *uuid;
>> guid_t le;
>> uuid_t be;
>> };
>>
>> -static const struct test_uuid_data test_uuid_test_data[] = {
>> +static const struct test_data correct_data[] = {
>> {
>> .uuid = "c33f4995-3701-450e-9fbf-206a2e98e576",
>> .le = GUID_INIT(0xc33f4995, 0x3701, 0x450e, 0x9f, 0xbf, 0x20, 0x6a, 0x2e, 0x98, 0xe5, 0x76),
>> @@ -33,101 +32,79 @@ static const struct test_uuid_data test_uuid_test_data[] = {
>> },
>> };
>>
>> -static const char * const test_uuid_wrong_data[] = {
>> +static const char * const wrong_data[] = {
>> "c33f4995-3701-450e-9fbf206a2e98e576 ", /* no hyphen(s) */
>> "64b4371c-77c1-48f9-8221-29f054XX023b", /* invalid character(s) */
>> "0cb4ddff-a545-4401-9d06-688af53e", /* not enough data */
>> };
>>
>> -static unsigned total_tests __initdata;
>> -static unsigned failed_tests __initdata;
>> -
>> -static void __init test_uuid_failed(const char *prefix, bool wrong, bool be,
>> - const char *data, const char *actual)
>> +static void uuid_correct_le(struct kunit *test)
>> {
>> - pr_err("%s test #%u %s %s data: '%s'\n",
>> - prefix,
>> - total_tests,
>> - wrong ? "passed on wrong" : "failed on",
>> - be ? "BE" : "LE",
>> - data);
>> - if (actual && *actual)
>> - pr_err("%s test #%u actual data: '%s'\n",
>> - prefix,
>> - total_tests,
>> - actual);
>> - failed_tests++;
>> + guid_t le;
>> + const struct test_data *data = test->param_value;
>> +
>> + KUNIT_ASSERT_EQ_MSG(test, guid_parse(data->uuid, &le), 0,
>> + "failed to parse '%s'", data->uuid);
>> + KUNIT_EXPECT_TRUE_MSG(test, guid_equal(&data->le, &le),
>> + "'%s' should be equal to %pUl", data->uuid, &le);
>> }
>>
>> -static void __init test_uuid_test(const struct test_uuid_data *data)
>> +static void uuid_correct_be(struct kunit *test)
>> {
>> - guid_t le;
>> uuid_t be;
>> - char buf[48];
>> -
>> - /* LE */
>> - total_tests++;
>> - if (guid_parse(data->uuid, &le))
>> - test_uuid_failed("conversion", false, false, data->uuid, NULL);
>> -
>> - total_tests++;
>> - if (!guid_equal(&data->le, &le)) {
>> - sprintf(buf, "%pUl", &le);
>> - test_uuid_failed("cmp", false, false, data->uuid, buf);
>> - }
>> -
>> - /* BE */
>> - total_tests++;
>> - if (uuid_parse(data->uuid, &be))
>> - test_uuid_failed("conversion", false, true, data->uuid, NULL);
>> -
>> - total_tests++;
>> - if (!uuid_equal(&data->be, &be)) {
>> - sprintf(buf, "%pUb", &be);
>> - test_uuid_failed("cmp", false, true, data->uuid, buf);
>> - }
>> + const struct test_data *data = test->param_value;
>> +
>> + KUNIT_ASSERT_EQ_MSG(test, uuid_parse(data->uuid, &be), 0,
>> + "failed to parse '%s'", data->uuid);
>> + KUNIT_EXPECT_TRUE_MSG(test, uuid_equal(&data->be, &be),
>> + "'%s' should be equal to %pUl", data->uuid, &be);
>> }
>>
>> -static void __init test_uuid_wrong(const char *data)
>> +static void uuid_wrong_le(struct kunit *test)
>> {
>> guid_t le;
>> - uuid_t be;
>> -
>> - /* LE */
>> - total_tests++;
>> - if (!guid_parse(data, &le))
>> - test_uuid_failed("negative", true, false, data, NULL);
>> + const char * const *data = test->param_value;
>>
>> - /* BE */
>> - total_tests++;
>> - if (!uuid_parse(data, &be))
>> - test_uuid_failed("negative", true, true, data, NULL);
>> + KUNIT_ASSERT_NE_MSG(test, guid_parse(*data, &le), 0,
>> + "parsing of '%s' should've failed", *data);
>> }
>>
>> -static int __init test_uuid_init(void)
>> +static void uuid_wrong_be(struct kunit *test)
>> {
>> - unsigned int i;
>> -
>> - for (i = 0; i < ARRAY_SIZE(test_uuid_test_data); i++)
>> - test_uuid_test(&test_uuid_test_data[i]);
>> -
>> - for (i = 0; i < ARRAY_SIZE(test_uuid_wrong_data); i++)
>> - test_uuid_wrong(test_uuid_wrong_data[i]);
>> + uuid_t be;
>> + const char * const *data = test->param_value;
>>
>> - if (failed_tests == 0)
>> - pr_info("all %u tests passed\n", total_tests);
>> - else
>> - pr_err("failed %u out of %u tests\n", failed_tests, total_tests);
>> + KUNIT_ASSERT_NE_MSG(test, uuid_parse(*data, &be), 0,
>> + "parsing of '%s' should've failed", *data);
>> +}
>>
>> - return failed_tests ? -EINVAL : 0;
>> +static void case_to_desc_correct(const struct test_data *t, char *desc)
>> +{
>> + strcpy(desc, t->uuid);
>> }
>> -module_init(test_uuid_init);
>>
>> -static void __exit test_uuid_exit(void)
>> +KUNIT_ARRAY_PARAM(correct, correct_data, case_to_desc_correct);
>> +
>> +static void case_to_desc_wrong(const char * const *s, char *desc)
>> {
>> - /* do nothing */
>> + strcpy(desc, *s);
>> }
>> -module_exit(test_uuid_exit);
>> +
>> +KUNIT_ARRAY_PARAM(wrong, wrong_data, case_to_desc_wrong);
>> +
>> +static struct kunit_case uuid_test_cases[] = {
>> + KUNIT_CASE_PARAM(uuid_correct_be, correct_gen_params),
>> + KUNIT_CASE_PARAM(uuid_correct_le, correct_gen_params),
>> + KUNIT_CASE_PARAM(uuid_wrong_be, wrong_gen_params),
>> + KUNIT_CASE_PARAM(uuid_wrong_le, wrong_gen_params),
>> + {}
>> +};
>> +
>> +static struct kunit_suite uuid_test_suite = {
>> + .name = "uuid",
>> + .test_cases = uuid_test_cases,
>> +};
>> +kunit_test_suite(uuid_test_suite);
>>
>> MODULE_AUTHOR("Andy Shevchenko <andriy.shevchenko@...ux.intel.com>");
>> MODULE_LICENSE("Dual BSD/GPL");
>> --
>> 2.32.0
>>
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