1/*
2 * Copyright (C) 2011 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 "WTFStringUtilities.h"
29
30#include <wtf/text/StringView.h>
31#include <wtf/text/WTFString.h>
32
33namespace TestWebKitAPI {
34
35#define EXPECT_N_WTF_STRING_COPIES(count, expr) \
36 do { \
37 wtfStringCopyCount = 0; \
38 String __testString = expr; \
39 (void)__testString; \
40 EXPECT_EQ(count, wtfStringCopyCount) << #expr; \
41 } while (false)
42
43TEST(WTF, StringOperators)
44{
45 String string("String");
46 AtomString atomString("AtomString");
47 ASCIILiteral literal { "ASCIILiteral"_s };
48
49 String stringViewBacking { "StringView" };
50 StringView stringView { stringViewBacking };
51
52 EXPECT_EQ(0, wtfStringCopyCount);
53
54 EXPECT_N_WTF_STRING_COPIES(2, string + string);
55 EXPECT_N_WTF_STRING_COPIES(2, string + atomString);
56 EXPECT_N_WTF_STRING_COPIES(2, atomString + string);
57 EXPECT_N_WTF_STRING_COPIES(2, atomString + atomString);
58 EXPECT_N_WTF_STRING_COPIES(1, stringView + string);
59 EXPECT_N_WTF_STRING_COPIES(1, string + stringView);
60 EXPECT_N_WTF_STRING_COPIES(1, stringView + atomString);
61 EXPECT_N_WTF_STRING_COPIES(1, atomString + stringView);
62
63 EXPECT_N_WTF_STRING_COPIES(1, "C string" + string);
64 EXPECT_N_WTF_STRING_COPIES(1, string + "C string");
65 EXPECT_N_WTF_STRING_COPIES(1, "C string" + atomString);
66 EXPECT_N_WTF_STRING_COPIES(1, atomString + "C string");
67 EXPECT_N_WTF_STRING_COPIES(0, "C string" + stringView);
68 EXPECT_N_WTF_STRING_COPIES(0, stringView + "C string");
69
70 EXPECT_N_WTF_STRING_COPIES(1, literal + string);
71 EXPECT_N_WTF_STRING_COPIES(1, string + literal);
72 EXPECT_N_WTF_STRING_COPIES(1, literal + atomString);
73 EXPECT_N_WTF_STRING_COPIES(1, atomString + literal);
74 EXPECT_N_WTF_STRING_COPIES(0, literal + stringView);
75 EXPECT_N_WTF_STRING_COPIES(0, stringView + literal);
76
77 EXPECT_N_WTF_STRING_COPIES(2, "C string" + string + "C string" + string);
78 EXPECT_N_WTF_STRING_COPIES(2, "C string" + (string + "C string" + string));
79 EXPECT_N_WTF_STRING_COPIES(2, ("C string" + string) + ("C string" + string));
80 EXPECT_N_WTF_STRING_COPIES(2, string + "C string" + string + "C string");
81 EXPECT_N_WTF_STRING_COPIES(2, string + ("C string" + string + "C string"));
82 EXPECT_N_WTF_STRING_COPIES(2, (string + "C string") + (string + "C string"));
83
84 EXPECT_N_WTF_STRING_COPIES(2, literal + string + literal + string);
85 EXPECT_N_WTF_STRING_COPIES(2, literal + (string + literal + string));
86 EXPECT_N_WTF_STRING_COPIES(2, (literal + string) + (literal + string));
87 EXPECT_N_WTF_STRING_COPIES(2, string + literal + string + literal);
88 EXPECT_N_WTF_STRING_COPIES(2, string + (literal + string + literal));
89 EXPECT_N_WTF_STRING_COPIES(2, (string + literal) + (string + literal));
90
91 EXPECT_N_WTF_STRING_COPIES(2, literal + string + "C string" + string);
92 EXPECT_N_WTF_STRING_COPIES(2, literal + (string + "C string" + string));
93 EXPECT_N_WTF_STRING_COPIES(2, (literal + string) + ("C string" + string));
94 EXPECT_N_WTF_STRING_COPIES(2, "C string" + string + literal + string);
95 EXPECT_N_WTF_STRING_COPIES(2, "C string" + (string + literal + string));
96 EXPECT_N_WTF_STRING_COPIES(2, ("C string" + string) + (literal + string));
97
98 EXPECT_N_WTF_STRING_COPIES(2, literal + atomString + "C string" + atomString);
99 EXPECT_N_WTF_STRING_COPIES(2, literal + (atomString + "C string" + atomString));
100 EXPECT_N_WTF_STRING_COPIES(2, (literal + atomString) + ("C string" + atomString));
101 EXPECT_N_WTF_STRING_COPIES(2, "C string" + atomString + literal + atomString);
102 EXPECT_N_WTF_STRING_COPIES(2, "C string" + (atomString + literal + atomString));
103 EXPECT_N_WTF_STRING_COPIES(2, ("C string" + atomString) + (literal + atomString));
104
105 EXPECT_N_WTF_STRING_COPIES(0, literal + stringView + "C string" + stringView);
106 EXPECT_N_WTF_STRING_COPIES(0, literal + (stringView + "C string" + stringView));
107 EXPECT_N_WTF_STRING_COPIES(0, (literal + stringView) + ("C string" + stringView));
108 EXPECT_N_WTF_STRING_COPIES(0, "C string" + stringView + literal + stringView);
109 EXPECT_N_WTF_STRING_COPIES(0, "C string" + (stringView + literal + stringView));
110 EXPECT_N_WTF_STRING_COPIES(0, ("C string" + stringView) + (literal + stringView));
111
112 EXPECT_N_WTF_STRING_COPIES(2, literal + atomString + "C string" + string + literal + stringView);
113 EXPECT_N_WTF_STRING_COPIES(2, literal + (atomString + "C string" + string + literal + stringView));
114 EXPECT_N_WTF_STRING_COPIES(2, (literal + atomString) + ("C string" + string) + (literal + stringView));
115 EXPECT_N_WTF_STRING_COPIES(2, "C string" + atomString + literal + string + literal + stringView);
116 EXPECT_N_WTF_STRING_COPIES(2, "C string" + (atomString + literal + string + literal + stringView));
117 EXPECT_N_WTF_STRING_COPIES(2, ("C string" + atomString) + (literal + string) + (literal + stringView));
118
119 EXPECT_N_WTF_STRING_COPIES(2, literal + atomString + "C string" + stringView + literal + string);
120 EXPECT_N_WTF_STRING_COPIES(2, literal + (atomString + "C string" + stringView + literal + string));
121 EXPECT_N_WTF_STRING_COPIES(2, (literal + atomString) + ("C string" + stringView) + (literal + string));
122 EXPECT_N_WTF_STRING_COPIES(2, "C string" + atomString + literal + stringView + literal + string);
123 EXPECT_N_WTF_STRING_COPIES(2, "C string" + (atomString + literal + stringView + literal + string));
124 EXPECT_N_WTF_STRING_COPIES(2, ("C string" + atomString) + (literal + stringView) + (literal + string));
125
126 EXPECT_N_WTF_STRING_COPIES(2, literal + string + "C string" + atomString + literal + stringView);
127 EXPECT_N_WTF_STRING_COPIES(2, literal + (string + "C string" + atomString + literal + stringView));
128 EXPECT_N_WTF_STRING_COPIES(2, (literal + string) + ("C string" + atomString) + (literal + stringView));
129 EXPECT_N_WTF_STRING_COPIES(2, "C string" + string + literal + atomString + literal + stringView);
130 EXPECT_N_WTF_STRING_COPIES(2, "C string" + (string + literal + atomString + literal + stringView));
131 EXPECT_N_WTF_STRING_COPIES(2, ("C string" + string) + (literal + atomString) + (literal + stringView));
132
133 EXPECT_N_WTF_STRING_COPIES(2, literal + string + "C string" + stringView + literal + atomString);
134 EXPECT_N_WTF_STRING_COPIES(2, literal + (string + "C string" + stringView + literal + atomString));
135 EXPECT_N_WTF_STRING_COPIES(2, (literal + string) + ("C string" + stringView) + (literal + atomString));
136 EXPECT_N_WTF_STRING_COPIES(2, "C string" + string + literal + stringView + literal + atomString);
137 EXPECT_N_WTF_STRING_COPIES(2, "C string" + (string + literal + stringView + literal + atomString));
138 EXPECT_N_WTF_STRING_COPIES(2, ("C string" + string) + (literal + stringView) + (literal + atomString));
139
140 EXPECT_N_WTF_STRING_COPIES(2, literal + stringView + "C string" + atomString + literal + string);
141 EXPECT_N_WTF_STRING_COPIES(2, literal + (stringView + "C string" + atomString + literal + string));
142 EXPECT_N_WTF_STRING_COPIES(2, (literal + stringView) + ("C string" + atomString) + (literal + string));
143 EXPECT_N_WTF_STRING_COPIES(2, "C string" + stringView + literal + atomString + literal + string);
144 EXPECT_N_WTF_STRING_COPIES(2, "C string" + (stringView + literal + atomString + literal + string));
145 EXPECT_N_WTF_STRING_COPIES(2, ("C string" + stringView) + (literal + atomString) + (literal + string));
146
147 EXPECT_N_WTF_STRING_COPIES(2, literal + stringView + "C string" + string + literal + atomString);
148 EXPECT_N_WTF_STRING_COPIES(2, literal + (stringView + "C string" + string + literal + atomString));
149 EXPECT_N_WTF_STRING_COPIES(2, (literal + stringView) + ("C string" + string) + (literal + atomString));
150 EXPECT_N_WTF_STRING_COPIES(2, "C string" + stringView + literal + string + literal + atomString);
151 EXPECT_N_WTF_STRING_COPIES(2, "C string" + (stringView + literal + string + literal + atomString));
152 EXPECT_N_WTF_STRING_COPIES(2, ("C string" + stringView) + (literal + string) + (literal + atomString));
153
154 EXPECT_N_WTF_STRING_COPIES(2, "C string" + atomString + "C string" + atomString);
155 EXPECT_N_WTF_STRING_COPIES(2, "C string" + (atomString + "C string" + atomString));
156 EXPECT_N_WTF_STRING_COPIES(2, ("C string" + atomString) + ("C string" + atomString));
157 EXPECT_N_WTF_STRING_COPIES(2, atomString + "C string" + atomString + "C string");
158 EXPECT_N_WTF_STRING_COPIES(2, atomString + ("C string" + atomString + "C string"));
159 EXPECT_N_WTF_STRING_COPIES(2, (atomString + "C string") + (atomString + "C string"));
160
161 EXPECT_N_WTF_STRING_COPIES(2, literal + atomString + literal + atomString);
162 EXPECT_N_WTF_STRING_COPIES(2, literal + (atomString + literal + atomString));
163 EXPECT_N_WTF_STRING_COPIES(2, (literal + atomString) + (literal + atomString));
164 EXPECT_N_WTF_STRING_COPIES(2, atomString + literal + atomString + literal);
165 EXPECT_N_WTF_STRING_COPIES(2, atomString + (literal + atomString + literal));
166 EXPECT_N_WTF_STRING_COPIES(2, (atomString + literal) + (atomString + literal));
167
168 EXPECT_N_WTF_STRING_COPIES(2, "C string" + string + "C string" + atomString + "C string" + stringView);
169 EXPECT_N_WTF_STRING_COPIES(2, "C string" + (string + "C string" + atomString + "C string" + stringView));
170 EXPECT_N_WTF_STRING_COPIES(2, ("C string" + string) + ("C string" + atomString) + ("C string" + stringView));
171 EXPECT_N_WTF_STRING_COPIES(2, string + "C string" + atomString + "C string" + stringView + "C string");
172 EXPECT_N_WTF_STRING_COPIES(2, string + ("C string" + atomString + "C string" + stringView + "C string"));
173 EXPECT_N_WTF_STRING_COPIES(2, (string + "C string") + (atomString + "C string") + (stringView + "C string"));
174
175 EXPECT_N_WTF_STRING_COPIES(2, literal + string + literal + atomString + literal + stringView);
176 EXPECT_N_WTF_STRING_COPIES(2, literal + (string + literal + atomString + literal + stringView));
177 EXPECT_N_WTF_STRING_COPIES(2, (literal + string) + (literal + atomString) + (literal + stringView));
178 EXPECT_N_WTF_STRING_COPIES(2, string + literal + atomString + literal + stringView + literal);
179 EXPECT_N_WTF_STRING_COPIES(2, string + (literal + atomString + literal + stringView + literal));
180 EXPECT_N_WTF_STRING_COPIES(2, (string + literal) + (atomString + literal) + (stringView + literal));
181
182 EXPECT_N_WTF_STRING_COPIES(2, "C string" + string + "C string" + stringView + "C string" + atomString);
183 EXPECT_N_WTF_STRING_COPIES(2, "C string" + (string + "C string" + stringView + "C string" + atomString));
184 EXPECT_N_WTF_STRING_COPIES(2, ("C string" + string) + ("C string" + stringView) + ("C string" + atomString));
185 EXPECT_N_WTF_STRING_COPIES(2, string + "C string" + stringView + "C string" + atomString + "C string");
186 EXPECT_N_WTF_STRING_COPIES(2, string + ("C string" + stringView + "C string" + atomString + "C string"));
187 EXPECT_N_WTF_STRING_COPIES(2, (string + "C string") + (stringView + "C string") + (atomString + "C string"));
188
189 EXPECT_N_WTF_STRING_COPIES(2, literal + string + literal + stringView + literal + atomString);
190 EXPECT_N_WTF_STRING_COPIES(2, literal + (string + literal + stringView + literal + atomString));
191 EXPECT_N_WTF_STRING_COPIES(2, (literal + string) + (literal + stringView) + (literal + atomString));
192 EXPECT_N_WTF_STRING_COPIES(2, string + literal + stringView + literal + atomString + literal);
193 EXPECT_N_WTF_STRING_COPIES(2, string + (literal + stringView + literal + atomString + literal));
194 EXPECT_N_WTF_STRING_COPIES(2, (string + literal) + (stringView + literal) + (atomString + literal));
195
196 EXPECT_N_WTF_STRING_COPIES(2, "C string" + atomString + "C string" + string + "C string" + stringView);
197 EXPECT_N_WTF_STRING_COPIES(2, "C string" + (atomString + "C string" + string + "C string" + stringView));
198 EXPECT_N_WTF_STRING_COPIES(2, ("C string" + atomString) + ("C string" + string) + ("C string" + stringView));
199 EXPECT_N_WTF_STRING_COPIES(2, atomString + "C string" + string + "C string" + stringView + "C string");
200 EXPECT_N_WTF_STRING_COPIES(2, atomString + ("C string" + string + "C string" + stringView + "C string"));
201 EXPECT_N_WTF_STRING_COPIES(2, (atomString + "C string") + (string + "C string") + (stringView + "C string"));
202
203 EXPECT_N_WTF_STRING_COPIES(2, literal + atomString + literal + string + literal + stringView);
204 EXPECT_N_WTF_STRING_COPIES(2, literal + (atomString + literal + string + literal + stringView));
205 EXPECT_N_WTF_STRING_COPIES(2, (literal + atomString) + (literal + string) + (literal + stringView));
206 EXPECT_N_WTF_STRING_COPIES(2, atomString + literal + string + literal + stringView + literal);
207 EXPECT_N_WTF_STRING_COPIES(2, atomString + (literal + string + literal + stringView + literal));
208 EXPECT_N_WTF_STRING_COPIES(2, (atomString + literal) + (string + literal) + (stringView + literal));
209
210 EXPECT_N_WTF_STRING_COPIES(2, "C string" + atomString + "C string" + stringView + "C string" + string);
211 EXPECT_N_WTF_STRING_COPIES(2, "C string" + (atomString + "C string" + stringView + "C string" + string));
212 EXPECT_N_WTF_STRING_COPIES(2, ("C string" + atomString) + ("C string" + stringView) + ("C string" + string));
213 EXPECT_N_WTF_STRING_COPIES(2, atomString + "C string" + stringView + "C string" + string + "C string");
214 EXPECT_N_WTF_STRING_COPIES(2, atomString + ("C string" + stringView + "C string" + string + "C string"));
215 EXPECT_N_WTF_STRING_COPIES(2, (atomString + "C string") + (stringView + "C string") + (string + "C string"));
216
217 EXPECT_N_WTF_STRING_COPIES(2, literal + atomString + literal + stringView + literal + string);
218 EXPECT_N_WTF_STRING_COPIES(2, literal + (atomString + literal + stringView + literal + string));
219 EXPECT_N_WTF_STRING_COPIES(2, (literal + atomString) + (literal + stringView) + (literal + string));
220 EXPECT_N_WTF_STRING_COPIES(2, atomString + literal + stringView + literal + string + literal);
221 EXPECT_N_WTF_STRING_COPIES(2, atomString + (literal + stringView + literal + string + literal));
222 EXPECT_N_WTF_STRING_COPIES(2, (atomString + literal) + (stringView + literal) + (string + literal));
223
224 EXPECT_N_WTF_STRING_COPIES(2, "C string" + stringView + "C string" + atomString + "C string" + string);
225 EXPECT_N_WTF_STRING_COPIES(2, "C string" + (stringView + "C string" + atomString + "C string" + string));
226 EXPECT_N_WTF_STRING_COPIES(2, ("C string" + stringView) + ("C string" + atomString) + ("C string" + string));
227 EXPECT_N_WTF_STRING_COPIES(2, stringView + "C string" + atomString + "C string" + string + "C string");
228 EXPECT_N_WTF_STRING_COPIES(2, stringView + ("C string" + atomString + "C string" + string + "C string"));
229 EXPECT_N_WTF_STRING_COPIES(2, (stringView + "C string") + (atomString + "C string") + (string + "C string"));
230
231 EXPECT_N_WTF_STRING_COPIES(2, literal + stringView + literal + atomString + literal + string);
232 EXPECT_N_WTF_STRING_COPIES(2, literal + (stringView + literal + atomString + literal + string));
233 EXPECT_N_WTF_STRING_COPIES(2, (literal + stringView) + (literal + atomString) + (literal + string));
234 EXPECT_N_WTF_STRING_COPIES(2, stringView + literal + atomString + literal + string + literal);
235 EXPECT_N_WTF_STRING_COPIES(2, stringView + (literal + atomString + literal + string + literal));
236 EXPECT_N_WTF_STRING_COPIES(2, (stringView + literal) + (atomString + literal) + (string + literal));
237
238 EXPECT_N_WTF_STRING_COPIES(2, "C string" + stringView + "C string" + string + "C string" + atomString);
239 EXPECT_N_WTF_STRING_COPIES(2, "C string" + (stringView + "C string" + string + "C string" + atomString));
240 EXPECT_N_WTF_STRING_COPIES(2, ("C string" + stringView) + ("C string" + string) + ("C string" + atomString));
241 EXPECT_N_WTF_STRING_COPIES(2, stringView + "C string" + string + "C string" + atomString + "C string");
242 EXPECT_N_WTF_STRING_COPIES(2, stringView + ("C string" + string + "C string" + atomString + "C string"));
243 EXPECT_N_WTF_STRING_COPIES(2, (stringView + "C string") + (string + "C string") + (atomString + "C string"));
244
245 EXPECT_N_WTF_STRING_COPIES(2, literal + stringView + literal + string + literal + atomString);
246 EXPECT_N_WTF_STRING_COPIES(2, literal + (stringView + literal + string + literal + atomString));
247 EXPECT_N_WTF_STRING_COPIES(2, (literal + stringView) + (literal + string) + (literal + atomString));
248 EXPECT_N_WTF_STRING_COPIES(2, stringView + literal + string + literal + atomString + literal);
249 EXPECT_N_WTF_STRING_COPIES(2, stringView + (literal + string + literal + atomString + literal));
250 EXPECT_N_WTF_STRING_COPIES(2, (stringView + literal) + (string + literal) + (atomString + literal));
251}
252
253TEST(WTF, ConcatenateCharacterArrayAndEmptyString)
254{
255 String emptyString;
256 EXPECT_EQ(static_cast<unsigned>(0), emptyString.length());
257
258 UChar ucharArray[] = { 't', 'e', 's', 't', '\0' };
259 String concatenation16 = ucharArray + emptyString;
260 ASSERT_EQ(static_cast<unsigned>(4), concatenation16.length());
261 ASSERT_TRUE(concatenation16 == String(ucharArray));
262
263 LChar lcharArray[] = { 't', 'e', 's', 't', '\0' };
264 String concatenation8 = lcharArray + emptyString;
265 ASSERT_EQ(static_cast<unsigned>(4), concatenation8.length());
266 ASSERT_TRUE(concatenation8 == String(lcharArray));
267}
268
269} // namespace TestWebKitAPI
270