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// SPDX-License-Identifier: GPL-2.0-only
#include <kunit/test.h>
#include <linux/math.h>
struct test_case_params {
u64 base;
unsigned int exponent;
u64 expected_result;
const char *name;
};
static const struct test_case_params params[] = {
{ 64, 0, 1, "Power of zero" },
{ 64, 1, 64, "Power of one"},
{ 0, 5, 0, "Base zero" },
{ 1, 64, 1, "Base one" },
{ 2, 2, 4, "Two squared"},
{ 2, 3, 8, "Two cubed"},
{ 5, 5, 3125, "Five raised to the fifth power" },
{ U64_MAX, 1, U64_MAX, "Max base" },
{ 2, 63, 9223372036854775808ULL, "Large result"},
};
static void get_desc(const struct test_case_params *tc, char *desc)
{
strscpy(desc, tc->name, KUNIT_PARAM_DESC_SIZE);
}
KUNIT_ARRAY_PARAM(int_pow, params, get_desc);
static void int_pow_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, int_pow(tc->base, tc->exponent));
}
static struct kunit_case math_int_pow_test_cases[] = {
KUNIT_CASE_PARAM(int_pow_test, int_pow_gen_params),
{}
};
static struct kunit_suite int_pow_test_suite = {
.name = "math-int_pow",
.test_cases = math_int_pow_test_cases,
};
kunit_test_suites(&int_pow_test_suite);
MODULE_DESCRIPTION("math.int_pow KUnit test suite");
MODULE_LICENSE("GPL");
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