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// SPDX-License-Identifier: GPL-2.0-only
#include <kunit/test.h>
#include <linux/sort.h>
#include <linux/slab.h>
#include <linux/module.h>
/* a simple boot-time regression test */
#define TEST_LEN 1000
static int cmpint(const void *a, const void *b)
{
return *(int *)a - *(int *)b;
}
static void test_sort(struct kunit *test)
{
int *a, i, r = 1;
a = kunit_kmalloc_array(test, TEST_LEN, sizeof(*a), GFP_KERNEL);
KUNIT_ASSERT_NOT_ERR_OR_NULL(test, a);
for (i = 0; i < TEST_LEN; i++) {
r = (r * 725861) % 6599;
a[i] = r;
}
sort(a, TEST_LEN, sizeof(*a), cmpint, NULL);
for (i = 0; i < TEST_LEN - 1; i++)
KUNIT_ASSERT_LE(test, a[i], a[i + 1]);
r = 48;
for (i = 0; i < TEST_LEN - 1; i++) {
r = (r * 725861) % 6599;
a[i] = r;
}
sort(a, TEST_LEN - 1, sizeof(*a), cmpint, NULL);
for (i = 0; i < TEST_LEN - 2; i++)
KUNIT_ASSERT_LE(test, a[i], a[i + 1]);
}
static struct kunit_case sort_test_cases[] = {
KUNIT_CASE(test_sort),
{}
};
static struct kunit_suite sort_test_suite = {
.name = "lib_sort",
.test_cases = sort_test_cases,
};
kunit_test_suites(&sort_test_suite);
MODULE_DESCRIPTION("sort() KUnit test suite");
MODULE_LICENSE("GPL");
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