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09c434b8 1// SPDX-License-Identifier: GPL-2.0-only
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2
3#include <kunit/test.h>
4
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5#include <linux/sort.h>
6#include <linux/slab.h>
ebd03a9a 7#include <linux/module.h>
c5adae95 8
ebd03a9a 9/* a simple boot-time regression test */
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10
11#define TEST_LEN 1000
12
36f33b56 13static int cmpint(const void *a, const void *b)
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14{
15 return *(int *)a - *(int *)b;
16}
17
36f33b56 18static void test_sort(struct kunit *test)
c5adae95 19{
36f33b56 20 int *a, i, r = 1;
c5adae95 21
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22 a = kunit_kmalloc_array(test, TEST_LEN, sizeof(*a), GFP_KERNEL);
23 KUNIT_ASSERT_NOT_ERR_OR_NULL(test, a);
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24
25 for (i = 0; i < TEST_LEN; i++) {
26 r = (r * 725861) % 6599;
27 a[i] = r;
28 }
29
30 sort(a, TEST_LEN, sizeof(*a), cmpint, NULL);
31
c5adae95 32 for (i = 0; i < TEST_LEN-1; i++)
36f33b56 33 KUNIT_ASSERT_LE(test, a[i], a[i + 1]);
c5adae95 34}
ebd03a9a 35
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36static struct kunit_case sort_test_cases[] = {
37 KUNIT_CASE(test_sort),
38 {}
39};
40
41static struct kunit_suite sort_test_suite = {
42 .name = "lib_sort",
43 .test_cases = sort_test_cases,
44};
92fc7cb8 45
36f33b56 46kunit_test_suites(&sort_test_suite);
92fc7cb8 47
ebd03a9a 48MODULE_LICENSE("GPL");