1 /*
2 * Copyright (C) 2012 Apple Inc. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
14 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
15 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
17 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
18 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
19 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
20 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
21 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
22 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
23 * THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26 #include "config.h"
27
28 #include "wtf/text/CString.h"
29 #include <gtest/gtest.h>
30
31 namespace {
32
TEST(WTF,CStringNullStringConstructor)33 TEST(WTF, CStringNullStringConstructor)
34 {
35 CString string;
36 ASSERT_TRUE(string.isNull());
37 ASSERT_EQ(string.data(), static_cast<const char*>(0));
38 ASSERT_EQ(string.length(), static_cast<size_t>(0));
39
40 CString stringFromCharPointer(static_cast<const char*>(0));
41 ASSERT_TRUE(stringFromCharPointer.isNull());
42 ASSERT_EQ(stringFromCharPointer.data(), static_cast<const char*>(0));
43 ASSERT_EQ(stringFromCharPointer.length(), static_cast<size_t>(0));
44
45 CString stringFromCharAndLength(static_cast<const char*>(0), 0);
46 ASSERT_TRUE(stringFromCharAndLength.isNull());
47 ASSERT_EQ(stringFromCharAndLength.data(), static_cast<const char*>(0));
48 ASSERT_EQ(stringFromCharAndLength.length(), static_cast<size_t>(0));
49 }
50
TEST(WTF,CStringEmptyEmptyConstructor)51 TEST(WTF, CStringEmptyEmptyConstructor)
52 {
53 const char* emptyString = "";
54 CString string(emptyString);
55 ASSERT_FALSE(string.isNull());
56 ASSERT_EQ(string.length(), static_cast<size_t>(0));
57 ASSERT_EQ(string.data()[0], 0);
58
59 CString stringWithLength(emptyString, 0);
60 ASSERT_FALSE(stringWithLength.isNull());
61 ASSERT_EQ(stringWithLength.length(), static_cast<size_t>(0));
62 ASSERT_EQ(stringWithLength.data()[0], 0);
63 }
64
TEST(WTF,CStringEmptyRegularConstructor)65 TEST(WTF, CStringEmptyRegularConstructor)
66 {
67 const char* referenceString = "WebKit";
68
69 CString string(referenceString);
70 ASSERT_FALSE(string.isNull());
71 ASSERT_EQ(string.length(), strlen(referenceString));
72 ASSERT_STREQ(referenceString, string.data());
73
74 CString stringWithLength(referenceString, 6);
75 ASSERT_FALSE(stringWithLength.isNull());
76 ASSERT_EQ(stringWithLength.length(), strlen(referenceString));
77 ASSERT_STREQ(referenceString, stringWithLength.data());
78 }
79
TEST(WTF,CStringUninitializedConstructor)80 TEST(WTF, CStringUninitializedConstructor)
81 {
82 char* buffer;
83 CString emptyString = CString::newUninitialized(0, buffer);
84 ASSERT_FALSE(emptyString.isNull());
85 ASSERT_EQ(buffer, emptyString.data());
86 ASSERT_EQ(buffer[0], 0);
87
88 const size_t length = 25;
89 CString uninitializedString = CString::newUninitialized(length, buffer);
90 ASSERT_FALSE(uninitializedString.isNull());
91 ASSERT_EQ(buffer, uninitializedString.data());
92 ASSERT_EQ(uninitializedString.data()[length], 0);
93 }
94
TEST(WTF,CStringZeroTerminated)95 TEST(WTF, CStringZeroTerminated)
96 {
97 const char* referenceString = "WebKit";
98 CString stringWithLength(referenceString, 3);
99 ASSERT_EQ(stringWithLength.data()[3], 0);
100 }
101
TEST(WTF,CStringCopyOnWrite)102 TEST(WTF, CStringCopyOnWrite)
103 {
104 const char* initialString = "Webkit";
105 CString string(initialString);
106 CString copy = string;
107
108 string.mutableData()[3] = 'K';
109 ASSERT_TRUE(string != copy);
110 ASSERT_STREQ(string.data(), "WebKit");
111 ASSERT_STREQ(copy.data(), initialString);
112 }
113
TEST(WTF,CStringComparison)114 TEST(WTF, CStringComparison)
115 {
116 // Comparison with another CString.
117 CString a;
118 CString b;
119 ASSERT_TRUE(a == b);
120 ASSERT_FALSE(a != b);
121 a = "a";
122 b = CString();
123 ASSERT_FALSE(a == b);
124 ASSERT_TRUE(a != b);
125 a = "a";
126 b = "b";
127 ASSERT_FALSE(a == b);
128 ASSERT_TRUE(a != b);
129 a = "a";
130 b = "a";
131 ASSERT_TRUE(a == b);
132 ASSERT_FALSE(a != b);
133 a = "a";
134 b = "aa";
135 ASSERT_FALSE(a == b);
136 ASSERT_TRUE(a != b);
137 a = "";
138 b = "";
139 ASSERT_TRUE(a == b);
140 ASSERT_FALSE(a != b);
141 a = "";
142 b = CString();
143 ASSERT_FALSE(a == b);
144 ASSERT_TRUE(a != b);
145 a = "a";
146 b = "";
147 ASSERT_FALSE(a == b);
148 ASSERT_TRUE(a != b);
149
150 // Comparison with a const char*.
151 CString c;
152 const char* d = 0;
153 ASSERT_TRUE(c == d);
154 ASSERT_FALSE(c != d);
155 c = "c";
156 d = 0;
157 ASSERT_FALSE(c == d);
158 ASSERT_TRUE(c != d);
159 c = CString();
160 d = "d";
161 ASSERT_FALSE(c == d);
162 ASSERT_TRUE(c != d);
163 c = "c";
164 d = "d";
165 ASSERT_FALSE(c == d);
166 ASSERT_TRUE(c != d);
167 c = "c";
168 d = "c";
169 ASSERT_TRUE(c == d);
170 ASSERT_FALSE(c != d);
171 c = "c";
172 d = "cc";
173 ASSERT_FALSE(c == d);
174 ASSERT_TRUE(c != d);
175 c = "cc";
176 d = "c";
177 ASSERT_FALSE(c == d);
178 ASSERT_TRUE(c != d);
179 c = "";
180 d = "";
181 ASSERT_TRUE(c == d);
182 ASSERT_FALSE(c != d);
183 c = "";
184 d = 0;
185 ASSERT_FALSE(c == d);
186 ASSERT_TRUE(c != d);
187 c = CString();
188 d = "";
189 ASSERT_FALSE(c == d);
190 ASSERT_TRUE(c != d);
191 c = "a";
192 d = "";
193 ASSERT_FALSE(c == d);
194 ASSERT_TRUE(c != d);
195 c = "";
196 d = "b";
197 ASSERT_FALSE(c == d);
198 ASSERT_TRUE(c != d);
199 }
200
201 } // namespace
202