1 // SPDX-License-Identifier: GPL-2.0-only
2 
3 #include <kunit/test.h>
4 #include <linux/module.h>
5 #include <linux/prime_numbers.h>
6 
7 #include "../prime_numbers_private.h"
8 
9 static void dump_primes(void *ctx, const struct primes *p)
10 {
11 	static char buf[PAGE_SIZE];
12 	struct kunit_suite *suite = ctx;
13 
14 	bitmap_print_to_pagebuf(true, buf, p->primes, p->sz);
15 	kunit_info(suite, "primes.{last=%lu, .sz=%lu, .primes[]=...x%lx} = %s",
16 		   p->last, p->sz, p->primes[BITS_TO_LONGS(p->sz) - 1], buf);
17 }
18 
19 static void prime_numbers_test(struct kunit *test)
20 {
21 	const unsigned long max = 65536;
22 	unsigned long x, last, next;
23 
24 	for (last = 0, x = 2; x < max; x++) {
25 		const bool slow = slow_is_prime_number(x);
26 		const bool fast = is_prime_number(x);
27 
28 		KUNIT_ASSERT_EQ_MSG(test, slow, fast, "is-prime(%lu)", x);
29 
30 		if (!slow)
31 			continue;
32 
33 		next = next_prime_number(last);
34 		KUNIT_ASSERT_EQ_MSG(test, next, x, "next-prime(%lu)", last);
35 		last = next;
36 	}
37 }
38 
39 static void kunit_suite_exit(struct kunit_suite *suite)
40 {
41 	with_primes(suite, dump_primes);
42 }
43 
44 static struct kunit_case prime_numbers_cases[] = {
45 	KUNIT_CASE(prime_numbers_test),
46 	{},
47 };
48 
49 static struct kunit_suite prime_numbers_suite = {
50 	.name = "math-prime_numbers",
51 	.suite_exit = kunit_suite_exit,
52 	.test_cases = prime_numbers_cases,
53 };
54 
55 kunit_test_suite(prime_numbers_suite);
56 
57 MODULE_AUTHOR("Intel Corporation");
58 MODULE_DESCRIPTION("Prime number library");
59 MODULE_LICENSE("GPL");
60