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313b38a6ec
Extract a private header and convert the prime_numbers self-test to a KUnit test. I considered parameterizing the test using `KUNIT_CASE_PARAM` but didn't see how it was possible since the test logic is entangled with the test parameter generation logic. Signed-off-by: Tamir Duberstein <tamird@gmail.com> Link: https://lore.kernel.org/r/20250208-prime_numbers-kunit-convert-v5-2-b0cb82ae7c7d@gmail.com Signed-off-by: Kees Cook <kees@kernel.org>
59 lines
1.4 KiB
C
59 lines
1.4 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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#include <kunit/test.h>
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#include <linux/module.h>
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#include <linux/prime_numbers.h>
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#include "../prime_numbers_private.h"
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static void dump_primes(void *ctx, const struct primes *p)
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{
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static char buf[PAGE_SIZE];
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struct kunit_suite *suite = ctx;
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bitmap_print_to_pagebuf(true, buf, p->primes, p->sz);
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kunit_info(suite, "primes.{last=%lu, .sz=%lu, .primes[]=...x%lx} = %s",
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p->last, p->sz, p->primes[BITS_TO_LONGS(p->sz) - 1], buf);
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}
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static void prime_numbers_test(struct kunit *test)
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{
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const unsigned long max = 65536;
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unsigned long x, last, next;
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for (last = 0, x = 2; x < max; x++) {
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const bool slow = slow_is_prime_number(x);
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const bool fast = is_prime_number(x);
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KUNIT_ASSERT_EQ_MSG(test, slow, fast, "is-prime(%lu)", x);
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if (!slow)
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continue;
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next = next_prime_number(last);
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KUNIT_ASSERT_EQ_MSG(test, next, x, "next-prime(%lu)", last);
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last = next;
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}
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}
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static void kunit_suite_exit(struct kunit_suite *suite)
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{
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with_primes(suite, dump_primes);
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}
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static struct kunit_case prime_numbers_cases[] = {
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KUNIT_CASE(prime_numbers_test),
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{},
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};
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static struct kunit_suite prime_numbers_suite = {
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.name = "math-prime_numbers",
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.suite_exit = kunit_suite_exit,
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.test_cases = prime_numbers_cases,
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};
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kunit_test_suite(prime_numbers_suite);
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MODULE_AUTHOR("Intel Corporation");
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MODULE_DESCRIPTION("Prime number library");
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MODULE_LICENSE("GPL");
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