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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657// 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>");