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1 : /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
2 : /*
3 : * This file is part of the LibreOffice project.
4 : *
5 : * This Source Code Form is subject to the terms of the Mozilla Public
6 : * License, v. 2.0. If a copy of the MPL was not distributed with this
7 : * file, You can obtain one at http://mozilla.org/MPL/2.0/.
8 : *
9 : * This file incorporates work covered by the following license notice:
10 : *
11 : * Licensed to the Apache Software Foundation (ASF) under one or more
12 : * contributor license agreements. See the NOTICE file distributed
13 : * with this work for additional information regarding copyright
14 : * ownership. The ASF licenses this file to you under the Apache
15 : * License, Version 2.0 (the "License"); you may not use this file
16 : * except in compliance with the License. You may obtain a copy of
17 : * the License at http://www.apache.org/licenses/LICENSE-2.0 .
18 : */
19 :
20 : #include <sal/types.h>
21 : #include <cppunit/TestFixture.h>
22 : #include <cppunit/extensions/HelperMacros.h>
23 : #include <cppunit/plugin/TestPlugIn.h>
24 :
25 : #include <rtl/crc.h>
26 :
27 : namespace rtl_CRC32
28 : {
29 :
30 18 : class test : public CppUnit::TestFixture
31 : {
32 : public:
33 : // initialise your test code values here.
34 6 : void setUp()
35 : {
36 6 : }
37 :
38 6 : void tearDown()
39 : {
40 6 : }
41 :
42 :
43 : // insert your test code here.
44 1 : void rtl_crc32_001()
45 : {
46 : // this is demonstration code
47 : // CPPUNIT_ASSERT_MESSAGE("a message", 1 == 1);
48 :
49 1 : sal_uInt32 nCRC = 0;
50 :
51 1 : char buf[] = {0};
52 1 : int num = 0;
53 :
54 1 : nCRC = rtl_crc32(nCRC, buf, num);
55 :
56 1 : CPPUNIT_ASSERT_MESSAGE("empty crc buffer", nCRC == 0);
57 1 : }
58 :
59 1 : void rtl_crc32_002()
60 : {
61 1 : sal_uInt32 nCRC = 0;
62 :
63 1 : char buf[] = {0,0};
64 1 : int num = sizeof(buf);
65 :
66 1 : nCRC = rtl_crc32(nCRC, buf, num);
67 :
68 1 : CPPUNIT_ASSERT_MESSAGE("buffer contain 2 empty bytes, crc is zero", nCRC != 0);
69 1 : }
70 :
71 1 : void rtl_crc32_002_1()
72 : {
73 1 : sal_uInt32 nCRC = 0;
74 :
75 1 : char buf[] = {0,0,0};
76 1 : int num = sizeof(buf);
77 :
78 1 : nCRC = rtl_crc32(nCRC, buf, num);
79 :
80 1 : CPPUNIT_ASSERT_MESSAGE("buffer contain 3 empty bytes, crc is zero", nCRC != 0);
81 1 : }
82 :
83 : /**
84 : * crc32 check:
85 : * Build checksum on two buffers with same size but different content,
86 : * the result (crc32 checksum) must differ
87 : */
88 :
89 1 : void rtl_crc32_003()
90 : {
91 1 : sal_uInt32 nCRC1 = 0;
92 1 : char buf1[] = {2};
93 1 : int num1 = sizeof(buf1);
94 :
95 1 : nCRC1 = rtl_crc32(nCRC1, buf1, num1);
96 :
97 1 : sal_uInt32 nCRC2 = 0;
98 1 : char buf2[] = {3};
99 1 : int num2 = sizeof(buf2);
100 :
101 1 : nCRC2 = rtl_crc32(nCRC2, buf2, num2);
102 :
103 1 : CPPUNIT_ASSERT_MESSAGE("checksum should differ for buf1 and buf2", nCRC1 != nCRC2);
104 1 : }
105 :
106 : /** check if the crc32 only use as much values, as given
107 : *
108 : */
109 1 : void rtl_crc32_003_1()
110 : {
111 1 : sal_uInt32 nCRC1 = 0;
112 1 : char buf1[] = {2,1};
113 1 : int num1 = sizeof(buf1) - 1;
114 :
115 1 : nCRC1 = rtl_crc32(nCRC1, buf1, num1);
116 :
117 1 : sal_uInt32 nCRC2 = 0;
118 1 : char buf2[] = {2,2};
119 1 : int num2 = sizeof(buf2) - 1;
120 :
121 1 : nCRC2 = rtl_crc32(nCRC2, buf2, num2);
122 :
123 1 : CPPUNIT_ASSERT_MESSAGE("checksum leave it's bounds", nCRC1 == nCRC2);
124 1 : }
125 :
126 : /** check if the crc32 differ at same content in reverse order
127 : *
128 : */
129 1 : void rtl_crc32_003_2()
130 : {
131 1 : sal_uInt32 nCRC1 = 0;
132 1 : char buf1[] = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20};
133 1 : int num1 = sizeof(buf1);
134 :
135 1 : nCRC1 = rtl_crc32(nCRC1, buf1, num1);
136 :
137 1 : sal_uInt32 nCRC2 = 0;
138 1 : char buf2[] = {20,19,18,17,16,15,14,13,12,11,10,9,8,7,6,5,4,3,2,1,0};
139 1 : int num2 = sizeof(buf2);
140 :
141 1 : nCRC2 = rtl_crc32(nCRC2, buf2, num2);
142 :
143 1 : CPPUNIT_ASSERT_MESSAGE("checksum should differ", nCRC1 != nCRC2);
144 1 : }
145 :
146 :
147 :
148 : // Change the following lines only, if you add, remove or rename
149 : // member functions of the current class,
150 : // because these macros are need by auto register mechanism.
151 :
152 2 : CPPUNIT_TEST_SUITE(test);
153 1 : CPPUNIT_TEST(rtl_crc32_001);
154 1 : CPPUNIT_TEST(rtl_crc32_002);
155 1 : CPPUNIT_TEST(rtl_crc32_002_1);
156 1 : CPPUNIT_TEST(rtl_crc32_003);
157 1 : CPPUNIT_TEST(rtl_crc32_003_1);
158 1 : CPPUNIT_TEST(rtl_crc32_003_2);
159 2 : CPPUNIT_TEST_SUITE_END();
160 : }; // class test
161 :
162 : // -----------------------------------------------------------------------------
163 1 : CPPUNIT_TEST_SUITE_REGISTRATION(rtl_CRC32::test);
164 : } // namespace rtl_CRC32
165 :
166 :
167 : // -----------------------------------------------------------------------------
168 :
169 : // this macro creates an empty function, which will called by the RegisterAllFunctions()
170 : // to let the user the possibility to also register some functions by hand.
171 4 : CPPUNIT_PLUGIN_IMPLEMENT();
172 :
173 : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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