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1// SPDX-License-Identifier: GPL-2.0-only2 3#include <kunit/test.h>4#include <linux/math.h>5 6struct test_case_params {7 u64 base;8 unsigned int exponent;9 u64 expected_result;10 const char *name;11};12 13static 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 25static void get_desc(const struct test_case_params *tc, char *desc)26{27 strscpy(desc, tc->name, KUNIT_PARAM_DESC_SIZE);28}29 30KUNIT_ARRAY_PARAM(int_pow, params, get_desc);31 32static 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 39static struct kunit_case math_int_pow_test_cases[] = {40 KUNIT_CASE_PARAM(int_pow_test, int_pow_gen_params),41 {}42};43 44static struct kunit_suite int_pow_test_suite = {45 .name = "math-int_pow",46 .test_cases = math_int_pow_test_cases,47};48 49kunit_test_suites(&int_pow_test_suite);50 51MODULE_DESCRIPTION("math.int_pow KUnit test suite");52MODULE_LICENSE("GPL");53