1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
|
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice:
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed
* with this work for additional information regarding copyright
* ownership. The ASF licenses this file to you under the Apache
* License, Version 2.0 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.apache.org/licenses/LICENSE-2.0 .
*/
#include <sal/types.h>
#include <cppunit/TestFixture.h>
#include <cppunit/extensions/HelperMacros.h>
#include <rtl/crc.h>
namespace rtl_CRC32
{
class test : public CppUnit::TestFixture
{
public:
// insert your test code here.
void rtl_crc32_001()
{
// this is demonstration code
// CPPUNIT_ASSERT_MESSAGE("a message", 1 == 1);
sal_uInt32 nCRC = 0;
char buf[] = {0};
int num = 0;
nCRC = rtl_crc32(nCRC, buf, num);
CPPUNIT_ASSERT_EQUAL_MESSAGE("empty crc buffer", static_cast<sal_uInt32>(0), nCRC);
}
void rtl_crc32_002()
{
sal_uInt32 nCRC = 0;
char buf[] = {0,0};
int num = sizeof(buf);
nCRC = rtl_crc32(nCRC, buf, num);
CPPUNIT_ASSERT_MESSAGE("buffer contain 2 empty bytes, crc is zero", nCRC != 0);
}
void rtl_crc32_002_1()
{
sal_uInt32 nCRC = 0;
char buf[] = {0,0,0};
int num = sizeof(buf);
nCRC = rtl_crc32(nCRC, buf, num);
CPPUNIT_ASSERT_MESSAGE("buffer contain 3 empty bytes, crc is zero", nCRC != 0);
}
/**
* crc32 check:
* Build checksum on two buffers with same size but different content,
* the result (crc32 checksum) must differ
*/
void rtl_crc32_003()
{
sal_uInt32 nCRC1 = 0;
char buf1[] = {2};
int num1 = sizeof(buf1);
nCRC1 = rtl_crc32(nCRC1, buf1, num1);
sal_uInt32 nCRC2 = 0;
char buf2[] = {3};
int num2 = sizeof(buf2);
nCRC2 = rtl_crc32(nCRC2, buf2, num2);
CPPUNIT_ASSERT_MESSAGE("checksum should differ for buf1 and buf2", nCRC1 != nCRC2);
}
/** check if the crc32 only use as much values, as given
*
*/
void rtl_crc32_003_1()
{
sal_uInt32 nCRC1 = 0;
char buf1[] = {2,1};
int num1 = sizeof(buf1) - 1;
nCRC1 = rtl_crc32(nCRC1, buf1, num1);
sal_uInt32 nCRC2 = 0;
char buf2[] = {2,2};
int num2 = sizeof(buf2) - 1;
nCRC2 = rtl_crc32(nCRC2, buf2, num2);
CPPUNIT_ASSERT_EQUAL_MESSAGE("checksum leave it's bounds", nCRC2, nCRC1);
}
/** check if the crc32 differ at same content in reverse order
*
*/
void rtl_crc32_003_2()
{
sal_uInt32 nCRC1 = 0;
char buf1[] = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20};
int num1 = sizeof(buf1);
nCRC1 = rtl_crc32(nCRC1, buf1, num1);
sal_uInt32 nCRC2 = 0;
char buf2[] = {20,19,18,17,16,15,14,13,12,11,10,9,8,7,6,5,4,3,2,1,0};
int num2 = sizeof(buf2);
nCRC2 = rtl_crc32(nCRC2, buf2, num2);
CPPUNIT_ASSERT_MESSAGE("checksum should differ", nCRC1 != nCRC2);
}
// Change the following lines only, if you add, remove or rename
// member functions of the current class,
// because these macros are need by auto register mechanism.
CPPUNIT_TEST_SUITE(test);
CPPUNIT_TEST(rtl_crc32_001);
CPPUNIT_TEST(rtl_crc32_002);
CPPUNIT_TEST(rtl_crc32_002_1);
CPPUNIT_TEST(rtl_crc32_003);
CPPUNIT_TEST(rtl_crc32_003_1);
CPPUNIT_TEST(rtl_crc32_003_2);
CPPUNIT_TEST_SUITE_END();
}; // class test
CPPUNIT_TEST_SUITE_REGISTRATION(rtl_CRC32::test);
} // namespace rtl_CRC32
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
|
