1 /*
2 * Copyright (c) 2015, 2017, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
23
24 /* @test
25 * @bug 8058779 8054307
26 * @library /test/lib
27 * @run testng LiteralReplace
28 * @summary Basic tests of String.replace(CharSequence, CharSequence)
29 * @key randomness
30 */
31
32 import java.util.ArrayList;
33 import java.util.Arrays;
34 import java.util.Iterator;
35 import java.util.regex.Matcher;
36 import java.util.regex.Pattern;
37 import java.util.Random;
38
39 import jdk.test.lib.RandomFactory;
40
41 import org.testng.annotations.Test;
42 import org.testng.annotations.DataProvider;
43 import static org.testng.Assert.fail;
44
45 public class LiteralReplace {
46
47 @Test(dataProvider="sourceTargetReplacementExpected")
48 public void testExpected(String source, String target,
49 String replacement, String expected)
50 {
51 String canonical = canonicalReplace(source, target, replacement);
52 if (!canonical.equals(expected)) {
53 fail("Canonical: " + canonical + " != " + expected);
54 }
55 test0(source, target, replacement, expected);
56 }
57
58 @Test(dataProvider="sourceTargetReplacement")
59 public void testCanonical(String source, String target,
60 String replacement)
61 {
62 String canonical = canonicalReplace(source, target, replacement);
63 test0(source, target, replacement, canonical);
64 }
65
66 private void test0(String source, String target, String replacement,
67 String expected)
68 {
69 String result = source.replace(target, replacement);
70 if (!result.equals(expected)) {
71 fail(result + " != " + expected);
72 }
73 }
74
75 @Test(dataProvider="sourceTargetReplacementWithNull",
76 expectedExceptions = {NullPointerException.class})
77 public void testNPE(String source, String target, String replacement) {
78 source.replace(target, replacement);
79 }
80
81
82 @DataProvider
83 public static Object[][] sourceTargetReplacementExpected() {
84 return new Object[][] {
85 {"aaa", "aa", "b", "ba"},
86 {"abcdefgh", "def", "DEF", "abcDEFgh"},
87 {"abcdefgh", "123", "DEF", "abcdefgh"},
88 {"abcdefgh", "abcdefghi", "DEF", "abcdefgh"},
89 {"abcdefghabc", "abc", "DEF", "DEFdefghDEF"},
90 {"abcdefghdef", "def", "", "abcgh"},
91 {"abcdefgh", "", "_", "_a_b_c_d_e_f_g_h_"},
92 {"", "", "", ""},
93 {"", "a", "b", ""},
94 {"", "", "abc", "abc"},
95 {"abcdefgh", "abcdefgh", "abcdefgh", "abcdefgh"},
96 {"abcdefgh", "abcdefgh", "abcdefghi", "abcdefghi"},
97 {"abcdefgh", "abcdefgh", "", ""},
98 {"abcdabcd", "abcd", "", ""},
99 {"aaaaaaaaa", "aa", "_X_", "_X__X__X__X_a"},
100 {"aaaaaaaaa", "aa", "aaa", "aaaaaaaaaaaaa"},
101 {"aaaaaaaaa", "aa", "aa", "aaaaaaaaa"},
102 {"a.c.e.g.", ".", "-", "a-c-e-g-"},
103 {"abcdefgh", "[a-h]", "X", "abcdefgh"},
104 {"aa+", "a+", "", "a"},
105 {"^abc$", "abc", "x", "^x$"},
106
107 // more with non-latin1 characters
108 {"\u4e00\u4e00\u4e00",
109 "\u4e00\u4e00",
110 "\u4e01",
111 "\u4e01\u4e00"},
112
113 {"\u4e00\u4e01\u4e02\u4e03\u4e04\u4e05\u4e06\u4e07\u4e08",
114 "\u4e03\u4e04\u4e05",
115 "\u4e10\u4e11\u4e12",
116 "\u4e00\u4e01\u4e02\u4e10\u4e11\u4e12\u4e06\u4e07\u4e08"},
117
118 {"\u4e00\u4e01\u4e02\u4e03\u4e04\u4e05\u4e06\u4e07\u4e08",
119 "ABC",
120 "\u4e10\u4e11\u4e12",
121 "\u4e00\u4e01\u4e02\u4e03\u4e04\u4e05\u4e06\u4e07\u4e08"},
122
123 {"\u4e00\u4e01\u4e02\u4e03\u4e04\u4e02\u4e03\u4e07\u4e08",
124 "\u4e02\u4e03",
125 "\u4e12\u4e13",
126 "\u4e00\u4e01\u4e12\u4e13\u4e04\u4e12\u4e13\u4e07\u4e08"},
127
128 {"\u4e00\u4e01\u4e02\u4e03\u4e04\u4e02\u4e03\u4e07\u4e08",
129 "\u4e02\u4e03",
130 "ab",
131 "\u4e00\u4e01ab\u4e04ab\u4e07\u4e08"},
132
133 {"\u4e00\u4e01\u4e02\u4e03\u4e04\u4e05\u4e06\u4e07",
134 "",
135 "_",
136 "_\u4e00_\u4e01_\u4e02_\u4e03_\u4e04_\u4e05_\u4e06_\u4e07_"},
137 {"^\u4e00\u4e01\u4e02$",
138 "\u4e00\u4e01\u4e02",
139 "\u4e03",
140 "^\u4e03$"},
141
142 {"", "\u4e00", "\u4e01", ""},
143 {"", "", "\u4e00\u4e01\u4e02", "\u4e00\u4e01\u4e02"},
144
145 {"^\u4e00\u4e01\u4e02$",
146 "\u4e00\u4e01\u4e02",
147 "X",
148 "^X$"},
149
150 {"abcdefgh",
151 "def",
152 "\u4e01",
153 "abc\u4e01gh"},
154
155 {"abcdefgh",
156 "def",
157 "\u4e01\u4e02",
158 "abc\u4e01\u4e02gh"},
159
160 {"abcdefabcgh",
161 "abc",
162 "\u4e01\u4e02",
163 "\u4e01\u4e02def\u4e01\u4e02gh"},
164
165 {"abcdefabcghabc",
166 "abc",
167 "\u4e01\u4e02",
168 "\u4e01\u4e02def\u4e01\u4e02gh\u4e01\u4e02"},
169
170 {"\u4e00\u4e01\u4e02\u4e03\u4e04\u4e05",
171 "\u4e00\u4e01\u4e02\u4e03\u4e04\u4e05",
172 "abcd",
173 "abcd"},
174
175 {"\u4e00\u4e01",
176 "\u4e00\u4e01",
177 "abcdefg",
178 "abcdefg"},
179
180 {"\u4e00\u4e01xyz",
181 "\u4e00\u4e01",
182 "abcdefg",
183 "abcdefgxyz"},
184
185 {"\u4e00\u4e00\u4e00\u4e00\u4e00\u4e00",
186 "\u4e00\u4e00",
187 "\u4e00\u4e00\u4e00",
188 "\u4e00\u4e00\u4e00\u4e00\u4e00\u4e00\u4e00\u4e00\u4e00"},
189
190 {"\u4e00\u4e00\u4e00\u4e00\u4e00\u4e00",
191 "\u4e00\u4e00\u4e00",
192 "\u4e00\u4e00",
193 "\u4e00\u4e00\u4e00\u4e00"},
194
195 {"\u4e00.\u4e01.\u4e02.\u4e03.\u4e04.",
196 ".",
197 "-",
198 "\u4e00-\u4e01-\u4e02-\u4e03-\u4e04-"},
199
200 {"\u4e00\u4e00\u4e00\u4e00\u4e00\u4e00",
201 "\u4e00",
202 "",
203 ""},
204
205 {"\u4e00\u4e01\u4e02\u4e03\u4e04\u4e05",
206 "\u4e00\u4e01\u4e02\u4e03\u4e04\u4e05",
207 "",
208 ""},
209 };
210 }
211
212 @DataProvider
213 public static Iterator<Object[]> sourceTargetReplacement() {
214 ArrayList<Object[]> list = new ArrayList<>();
215 for (int maxSrcLen = 1; maxSrcLen <= (1 << 10); maxSrcLen <<= 1) {
216 for (int maxTrgLen = 1; maxTrgLen <= (1 << 10); maxTrgLen <<= 1) {
217 for (int maxPrlLen = 1; maxPrlLen <= (1 << 10); maxPrlLen <<= 1) {
218 list.add(makeArray(makeRandomString(maxSrcLen),
219 makeRandomString(maxTrgLen),
220 makeRandomString(maxPrlLen)));
221
222 String source = makeRandomString(maxSrcLen);
223 list.add(makeArray(source,
224 mekeRandomSubstring(source, maxTrgLen),
225 makeRandomString(maxPrlLen)));
226 }
227 }
228 }
229 return list.iterator();
230 }
231
232 @DataProvider
233 public static Iterator<Object[]> sourceTargetReplacementWithNull() {
234 ArrayList<Object[]> list = new ArrayList<>();
235 Object[] arr = {null, "", "a", "b", "string", "str", "ababstrstr"};
236 for (int i = 0; i < arr.length; ++i) {
237 for (int j = 0; j < arr.length; ++j) {
238 for (int k = 0; k < arr.length; ++k) {
239 if (arr[i] != null && (arr[j] == null || arr[k] == null)) {
240 list.add(makeArray(arr[i], arr[j], arr[k]));
241 }
242 }
243 }
244 }
245 return list.iterator();
246 }
247
248 // utilities
249
250 /**
251 * How the String.replace(CharSequence, CharSequence) used to be implemented
252 */
253 private static String canonicalReplace(String source, String target, String replacement) {
254 return Pattern.compile(target.toString(), Pattern.LITERAL).matcher(
255 source).replaceAll(Matcher.quoteReplacement(replacement.toString()));
256 }
257
258 private static final Random random = RandomFactory.getRandom();
259
260 private static final char[] CHARS = ("qwertyuiop[]12345678" +
261 "90-=\\`asdfghjkl;'zxcvbnm,./~!@#$%^&*()_+|QWERTYUIOP{" +
262 "}ASDFGHJKL:\"ZXCVBNM<>?\n\r\t\u0444\u044B\u0432\u0430").toCharArray();
263
264 private static String makeRandomString(int maxLen) {
265 int len = random.nextInt(maxLen);
266 char[] buf = new char[len];
267 for (int i = 0; i < len; ++i) {
268 buf[i] = CHARS[random.nextInt(CHARS.length)];
269 }
270 return new String(buf);
271 }
272
273 private static String mekeRandomSubstring(String source, int maxLen) {
274 if (source.isEmpty()) {
275 return source;
276 }
277 int pos = random.nextInt(source.length());
278 int len = Integer.min(source.length() - pos,
279 random.nextInt(maxLen));
280 return source.substring(pos, pos + len);
281 }
282
283 private static Object[] makeArray(Object... array) {
284 return array;
285 }
286 }