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Adds test suite for integer based power function which performs integer exponentiation. The test suite is designed to verify that the implementation of int_pow correctly computes the power of a given base raised to a given exponent. The tests check various scenarios and edge cases to ensure the accuracy and reliability of the exponentiation function. Updated commit with test information at commit time: Shuah Khan Signed-off-by: Luis Felipe Hernandez <luis.hernandez093@gmail.com> Reviewed-by: David Gow <davidgow@google.com> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
52 lines
1.3 KiB
C
52 lines
1.3 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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#include <kunit/test.h>
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#include <linux/math.h>
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struct test_case_params {
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u64 base;
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unsigned int exponent;
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u64 expected_result;
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const char *name;
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};
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static const struct test_case_params params[] = {
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{ 64, 0, 1, "Power of zero" },
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{ 64, 1, 64, "Power of one"},
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{ 0, 5, 0, "Base zero" },
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{ 1, 64, 1, "Base one" },
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{ 2, 2, 4, "Two squared"},
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{ 2, 3, 8, "Two cubed"},
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{ 5, 5, 3125, "Five raised to the fifth power" },
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{ U64_MAX, 1, U64_MAX, "Max base" },
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{ 2, 63, 9223372036854775808ULL, "Large result"},
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};
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static void get_desc(const struct test_case_params *tc, char *desc)
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{
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strscpy(desc, tc->name, KUNIT_PARAM_DESC_SIZE);
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}
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KUNIT_ARRAY_PARAM(int_pow, params, get_desc);
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static void int_pow_test(struct kunit *test)
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{
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const struct test_case_params *tc = (const struct test_case_params *)test->param_value;
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KUNIT_EXPECT_EQ(test, tc->expected_result, int_pow(tc->base, tc->exponent));
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}
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static struct kunit_case math_int_pow_test_cases[] = {
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KUNIT_CASE_PARAM(int_pow_test, int_pow_gen_params),
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{}
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};
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static struct kunit_suite int_pow_test_suite = {
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.name = "math-int_pow",
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.test_cases = math_int_pow_test_cases,
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};
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kunit_test_suites(&int_pow_test_suite);
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MODULE_DESCRIPTION("math.int_pow KUnit test suite");
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MODULE_LICENSE("GPL");
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