// SPDX-License-Identifier: GPL-2.0-only #include <kunit/test.h>#include <linux/gcd.h>#include <linux/limits.h> struct test_case_params {	unsigned long val1;	unsigned long val2;	unsigned long expected_result;	const char *name;}; static const struct test_case_params params[] = {	{ 48, 18, 6, "GCD of 48 and 18" },	{ 18, 48, 6, "GCD of 18 and 48" },	{ 56, 98, 14, "GCD of 56 and 98" },	{ 17, 13, 1, "Coprime numbers" },	{ 101, 103, 1, "Coprime numbers" },	{ 270, 192, 6, "GCD of 270 and 192" },	{ 0, 5, 5, "GCD with zero" },	{ 7, 0, 7, "GCD with zero reversed" },	{ 36, 36, 36, "GCD of identical numbers" },	{ ULONG_MAX, 1, 1, "GCD of max ulong and 1" },	{ ULONG_MAX, ULONG_MAX, ULONG_MAX, "GCD of max ulong values" },}; static void get_desc(const struct test_case_params *tc, char *desc){	strscpy(desc, tc->name, KUNIT_PARAM_DESC_SIZE);} KUNIT_ARRAY_PARAM(gcd, params, get_desc); static void gcd_test(struct kunit *test){	const struct test_case_params *tc = (const struct test_case_params *)test->param_value; 	KUNIT_EXPECT_EQ(test, tc->expected_result, gcd(tc->val1, tc->val2));} static struct kunit_case math_gcd_test_cases[] = {	KUNIT_CASE_PARAM(gcd_test, gcd_gen_params),	{}}; static struct kunit_suite gcd_test_suite = {	.name = "math-gcd",	.test_cases = math_gcd_test_cases,}; kunit_test_suite(gcd_test_suite); MODULE_LICENSE("GPL");MODULE_DESCRIPTION("math.gcd KUnit test suite");MODULE_AUTHOR("Yu-Chun Lin <eleanor15x@gmail.com>");