| 1 | |
| 2 |
|
| 3 | #include <kunit/test.h>
|
| 4 | #include <linux/math.h>
|
| 5 |
|
| 6 | struct test_case_params {
|
| 7 | u64 base;
|
| 8 | unsigned int exponent;
|
| 9 | u64 expected_result;
|
| 10 | const char *name;
|
| 11 | };
|
| 12 |
|
| 13 | static const struct test_case_params params[] = {
|
| 14 | { 64, 0, 1, "Power of zero" },
|
| 15 | { 64, 1, 64, "Power of one"},
|
| 16 | { 0, 5, 0, "Base zero" },
|
| 17 | { 1, 64, 1, "Base one" },
|
| 18 | { 2, 2, 4, "Two squared"},
|
| 19 | { 2, 3, 8, "Two cubed"},
|
| 20 | { 5, 5, 3125, "Five raised to the fifth power" },
|
| 21 | { U64_MAX, 1, U64_MAX, "Max base" },
|
| 22 | { 2, 63, 9223372036854775808ULL, "Large result"},
|
| 23 | };
|
| 24 |
|
| 25 | static void get_desc(const struct test_case_params *tc, char *desc)
|
| 26 | {
|
| 27 | strscpy(desc, tc->name, KUNIT_PARAM_DESC_SIZE);
|
| 28 | }
|
| 29 |
|
| 30 | KUNIT_ARRAY_PARAM(int_pow, params, get_desc);
|
| 31 |
|
| 32 | static void int_pow_test(struct kunit *test)
|
| 33 | {
|
| 34 | const struct test_case_params *tc = (const struct test_case_params *)test->param_value;
|
| 35 |
|
| 36 | KUNIT_EXPECT_EQ(test, tc->expected_result, int_pow(tc->base, tc->exponent));
|
| 37 | }
|
| 38 |
|
| 39 | static struct kunit_case math_int_pow_test_cases[] = {
|
| 40 | KUNIT_CASE_PARAM(int_pow_test, int_pow_gen_params),
|
| 41 | {}
|
| 42 | };
|
| 43 |
|
| 44 | static struct kunit_suite int_pow_test_suite = {
|
| 45 | .name = "math-int_pow",
|
| 46 | .test_cases = math_int_pow_test_cases,
|
| 47 | };
|
| 48 |
|
| 49 | kunit_test_suites(&int_pow_test_suite);
|
| 50 |
|
| 51 | MODULE_DESCRIPTION("math.int_pow KUnit test suite");
|
| 52 | MODULE_LICENSE("GPL");
|