Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1// SPDX-License-Identifier: GPL-2.0-only OR MIT
2/* Copyright (c) 2025 Imagination Technologies Ltd. */
3
4#include "pvr_device.h"
5
6#include <linux/errno.h>
7#include <linux/stddef.h>
8#include <linux/string.h>
9#include <linux/types.h>
10
11#include <kunit/test.h>
12#include <kunit/visibility.h>
13
14static void decode_gpuid_string(struct kunit *test)
15{
16 const struct pvr_gpu_id bad_gpuid = { 0xdead, 0xbeef, 0xcafe, 0xface };
17 const u64 packed_bad_gpuid = pvr_gpu_id_to_packed_bvnc(&bad_gpuid);
18
19#define GPUID_TEST_CASE(str_, err_, value_) \
20 do { \
21 struct pvr_gpu_id _gpuid_out = bad_gpuid; \
22 int _err; \
23 _err = pvr_gpuid_decode_string(NULL, str_, &_gpuid_out); \
24 KUNIT_EXPECT_EQ(test, _err, err_); \
25 KUNIT_EXPECT_EQ(test, \
26 pvr_gpu_id_to_packed_bvnc(&_gpuid_out), \
27 value_); \
28 } while (0)
29
30#define GPUID_TEST_CASE_OK(str_, b_, v_, n_, c_) \
31 GPUID_TEST_CASE(str_, 0, PVR_PACKED_BVNC(b_, v_, n_, c_))
32
33#define GPUID_TEST_CASE_INVAL(str_) \
34 GPUID_TEST_CASE(str_, -EINVAL, packed_bad_gpuid)
35
36 GPUID_TEST_CASE_OK("12.34.56.78", 12, 34, 56, 78);
37 GPUID_TEST_CASE_OK("0.0.0.0", 0, 0, 0, 0);
38
39 GPUID_TEST_CASE_INVAL("");
40 GPUID_TEST_CASE_INVAL("42.foobar-invalid.gpuid.bvnc");
41
42 /* String longer than PVR_GPUID_STRING_MAX_LENGTH. */
43 GPUID_TEST_CASE_INVAL("12.34.56.789012345678901234567890123456");
44
45 /* Single value overflowing u16. */
46 GPUID_TEST_CASE_INVAL("12.34.56.999999");
47
48 /* Wrong number of parts and/or dots. */
49 GPUID_TEST_CASE_INVAL("12.34.56.78.90");
50 GPUID_TEST_CASE_INVAL("12.34.56..78");
51 GPUID_TEST_CASE_INVAL("12.34..56");
52 GPUID_TEST_CASE_INVAL("12.34.56");
53
54#undef GPUID_TEST_CASE_INVAL
55#undef GPUID_TEST_CASE_OK
56#undef GPUID_TEST_CASE
57}
58
59static struct kunit_case pvr_tests_cases[] = {
60 KUNIT_CASE(decode_gpuid_string),
61 {},
62};
63
64static struct kunit_suite pvr_tests_suite = {
65 .name = "pvr_tests",
66 .test_cases = pvr_tests_cases,
67};
68kunit_test_suite(pvr_tests_suite);
69
70MODULE_AUTHOR("Imagination Technologies Ltd.");
71MODULE_LICENSE("Dual MIT/GPL");
72MODULE_DESCRIPTION("pvr kunit tests");
73MODULE_IMPORT_NS("EXPORTED_FOR_KUNIT_TESTING");