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17 package org.apache.commons.lang3;
18
19 import static org.junit.jupiter.api.Assertions.assertArrayEquals;
20 import static org.junit.jupiter.api.Assertions.assertEquals;
21 import static org.junit.jupiter.api.Assertions.assertNull;
22
23 import org.junit.jupiter.api.Disabled;
24 import org.junit.jupiter.api.Test;
25
26
27
28
29 public class StringUtilsTrimStripTest extends AbstractLangTest {
30 private static final String FOO = "foo";
31
32 @Test
33 public void testStrip_String() {
34 assertNull(StringUtils.strip(null));
35 assertEquals("", StringUtils.strip(""));
36 assertEquals("", StringUtils.strip(" "));
37 assertEquals("abc", StringUtils.strip(" abc "));
38 assertEquals(StringUtilsTest.NON_WHITESPACE,
39 StringUtils.strip(StringUtilsTest.WHITESPACE + StringUtilsTest.NON_WHITESPACE + StringUtilsTest.WHITESPACE));
40 }
41
42 @Test
43 public void testStrip_StringString() {
44
45 assertNull(StringUtils.strip(null, null));
46 assertEquals("", StringUtils.strip("", null));
47 assertEquals("", StringUtils.strip(" ", null));
48 assertEquals("abc", StringUtils.strip(" abc ", null));
49 assertEquals(StringUtilsTest.NON_WHITESPACE,
50 StringUtils.strip(StringUtilsTest.WHITESPACE + StringUtilsTest.NON_WHITESPACE + StringUtilsTest.WHITESPACE, null));
51
52
53 assertNull(StringUtils.strip(null, ""));
54 assertEquals("", StringUtils.strip("", ""));
55 assertEquals(" ", StringUtils.strip(" ", ""));
56 assertEquals(" abc ", StringUtils.strip(" abc ", ""));
57 assertEquals(StringUtilsTest.WHITESPACE, StringUtils.strip(StringUtilsTest.WHITESPACE, ""));
58
59
60 assertNull(StringUtils.strip(null, " "));
61 assertEquals("", StringUtils.strip("", " "));
62 assertEquals("", StringUtils.strip(" ", " "));
63 assertEquals("abc", StringUtils.strip(" abc ", " "));
64
65
66 assertNull(StringUtils.strip(null, "ab"));
67 assertEquals("", StringUtils.strip("", "ab"));
68 assertEquals(" ", StringUtils.strip(" ", "ab"));
69 assertEquals(" abc ", StringUtils.strip(" abc ", "ab"));
70 assertEquals("c", StringUtils.strip("abcabab", "ab"));
71 assertEquals(StringUtilsTest.WHITESPACE, StringUtils.strip(StringUtilsTest.WHITESPACE, ""));
72 }
73
74 @Test
75 public void testStripAccents() {
76 final String cue = "\u00C7\u00FA\u00EA";
77 assertEquals("Cue", StringUtils.stripAccents(cue), "Failed to strip accents from " + cue);
78
79 final String lots = "\u00C0\u00C1\u00C2\u00C3\u00C4\u00C5\u00C7\u00C8\u00C9\u00CA\u00CB\u00CC\u00CD\u00CE\u00CF\u00D1\u00D2\u00D3"
80 + "\u00D4\u00D5\u00D6\u00D9\u00DA\u00DB\u00DC\u00DD";
81 assertEquals("AAAAAACEEEEIIIINOOOOOUUUUY", StringUtils.stripAccents(lots), "Failed to strip accents from " + lots);
82
83 assertNull(StringUtils.stripAccents(null), "Failed null safety");
84 assertEquals("", StringUtils.stripAccents(""), "Failed empty String");
85 assertEquals("control", StringUtils.stripAccents("control"), "Failed to handle non-accented text");
86 assertEquals("eclair", StringUtils.stripAccents("\u00E9clair"), "Failed to handle easy example");
87 assertEquals("ALOSZZCND aloszzcnd",
88 StringUtils.stripAccents("\u0104\u0141\u00D3\u015A\u017B\u0179\u0106\u0143\u0110 \u0105\u0142\u00F3\u015B\u017C\u017A\u0107\u0144\u0111"));
89 assertEquals("The cafe\u2019s pinata gave me deja vu.", StringUtils.stripAccents("The caf\u00e9\u2019s pi\u00f1ata gave me d\u00e9j\u00e0 vu."),
90 "Failed to handle accented text");
91 assertEquals("fluid quest", StringUtils.stripAccents("\ufb02uid que\ufb06"), "Failed to handle ligatures");
92 assertEquals("a b c 1 2 3", StringUtils.stripAccents("\u1d43 \u1d47 \u1d9c \u00b9 \u00b2 \u00b3"), "Failed to handle superscript text");
93 assertEquals("math italic",
94 StringUtils.stripAccents("\uD835\uDC5A\uD835\uDC4E\uD835\uDC61\u210E \uD835\uDC56\uD835\uDC61\uD835\uDC4E\uD835\uDC59\uD835\uDC56\uD835\uDC50"),
95 "Failed to handle UTF32 example");
96 assertEquals("\uD83D\uDF01 \uD83D\uDF02 \uD83D\uDF03 \uD83D\uDF04", StringUtils.stripAccents("\uD83D\uDF01 \uD83D\uDF02 \uD83D\uDF03 \uD83D\uDF04"),
97 "Failed to handle non-accented text");
98 }
99
100 @Test
101 @Disabled
102 public void testStripAccents_Korean() {
103
104 final String input = "\uC78A\uC9C0\uB9C8 \uB10C \uD750\uB9B0 \uC5B4\uB460\uC0AC\uC774 \uC67C\uC190\uC73C\uB85C \uADF8\uB9B0 \uBCC4 \uD558\uB098";
105 assertEquals(input, StringUtils.stripAccents(input), "Failed to handle Korean text");
106 }
107
108 @Test
109 public void testStripAccentsIWithBar() {
110 assertEquals("I i I i I", StringUtils.stripAccents("\u0197 \u0268 \u1D7B \u1DA4 \u1DA7"));
111 }
112
113 @Test
114 public void testStripAccentsTWithStroke() {
115 assertEquals("T t", StringUtils.stripAccents("\u0166 \u0167"));
116 }
117
118 @Test
119 public void testStripAccentsUWithBar() {
120 assertEquals("U u U u", StringUtils.stripAccents("\u0244 \u0289 \u1D7E \u1DB6"));
121 }
122
123 @Test
124 public void testStripAll() {
125
126 final String[] empty = {};
127 final String[] fooSpace = { " " + FOO + " ", " " + FOO, FOO + " " };
128 final String[] fooDots = { ".." + FOO + "..", ".." + FOO, FOO + ".." };
129 final String[] foo = { FOO, FOO, FOO };
130
131 assertNull(StringUtils.stripAll((String[]) null));
132
133 assertArrayEquals(empty, StringUtils.stripAll());
134 assertArrayEquals(new String[] { null }, StringUtils.stripAll((String) null));
135
136 assertArrayEquals(empty, StringUtils.stripAll(empty));
137 assertArrayEquals(foo, StringUtils.stripAll(fooSpace));
138
139 assertNull(StringUtils.stripAll(null, null));
140 assertArrayEquals(foo, StringUtils.stripAll(fooSpace, null));
141 assertArrayEquals(foo, StringUtils.stripAll(fooDots, "."));
142 }
143
144 @Test
145 public void testStripEnd_StringString() {
146
147 assertNull(StringUtils.stripEnd(null, null));
148 assertEquals("", StringUtils.stripEnd("", null));
149 assertEquals("", StringUtils.stripEnd(" ", null));
150 assertEquals(" abc", StringUtils.stripEnd(" abc ", null));
151 assertEquals(StringUtilsTest.WHITESPACE + StringUtilsTest.NON_WHITESPACE,
152 StringUtils.stripEnd(StringUtilsTest.WHITESPACE + StringUtilsTest.NON_WHITESPACE + StringUtilsTest.WHITESPACE, null));
153
154
155 assertNull(StringUtils.stripEnd(null, ""));
156 assertEquals("", StringUtils.stripEnd("", ""));
157 assertEquals(" ", StringUtils.stripEnd(" ", ""));
158 assertEquals(" abc ", StringUtils.stripEnd(" abc ", ""));
159 assertEquals(StringUtilsTest.WHITESPACE, StringUtils.stripEnd(StringUtilsTest.WHITESPACE, ""));
160
161
162 assertNull(StringUtils.stripEnd(null, " "));
163 assertEquals("", StringUtils.stripEnd("", " "));
164 assertEquals("", StringUtils.stripEnd(" ", " "));
165 assertEquals(" abc", StringUtils.stripEnd(" abc ", " "));
166
167
168 assertNull(StringUtils.stripEnd(null, "ab"));
169 assertEquals("", StringUtils.stripEnd("", "ab"));
170 assertEquals(" ", StringUtils.stripEnd(" ", "ab"));
171 assertEquals(" abc ", StringUtils.stripEnd(" abc ", "ab"));
172 assertEquals("abc", StringUtils.stripEnd("abcabab", "ab"));
173 assertEquals(StringUtilsTest.WHITESPACE, StringUtils.stripEnd(StringUtilsTest.WHITESPACE, ""));
174 }
175
176 @Test
177 public void testStripStart_StringString() {
178
179 assertNull(StringUtils.stripStart(null, null));
180 assertEquals("", StringUtils.stripStart("", null));
181 assertEquals("", StringUtils.stripStart(" ", null));
182 assertEquals("abc ", StringUtils.stripStart(" abc ", null));
183 assertEquals(StringUtilsTest.NON_WHITESPACE + StringUtilsTest.WHITESPACE,
184 StringUtils.stripStart(StringUtilsTest.WHITESPACE + StringUtilsTest.NON_WHITESPACE + StringUtilsTest.WHITESPACE, null));
185
186
187 assertNull(StringUtils.stripStart(null, ""));
188 assertEquals("", StringUtils.stripStart("", ""));
189 assertEquals(" ", StringUtils.stripStart(" ", ""));
190 assertEquals(" abc ", StringUtils.stripStart(" abc ", ""));
191 assertEquals(StringUtilsTest.WHITESPACE, StringUtils.stripStart(StringUtilsTest.WHITESPACE, ""));
192
193
194 assertNull(StringUtils.stripStart(null, " "));
195 assertEquals("", StringUtils.stripStart("", " "));
196 assertEquals("", StringUtils.stripStart(" ", " "));
197 assertEquals("abc ", StringUtils.stripStart(" abc ", " "));
198
199
200 assertNull(StringUtils.stripStart(null, "ab"));
201 assertEquals("", StringUtils.stripStart("", "ab"));
202 assertEquals(" ", StringUtils.stripStart(" ", "ab"));
203 assertEquals(" abc ", StringUtils.stripStart(" abc ", "ab"));
204 assertEquals("cabab", StringUtils.stripStart("abcabab", "ab"));
205 assertEquals(StringUtilsTest.WHITESPACE, StringUtils.stripStart(StringUtilsTest.WHITESPACE, ""));
206 }
207
208 @Test
209 public void testStripToEmpty_String() {
210 assertEquals("", StringUtils.stripToEmpty(null));
211 assertEquals("", StringUtils.stripToEmpty(""));
212 assertEquals("", StringUtils.stripToEmpty(" "));
213 assertEquals("", StringUtils.stripToEmpty(StringUtilsTest.WHITESPACE));
214 assertEquals("ab c", StringUtils.stripToEmpty(" ab c "));
215 assertEquals(StringUtilsTest.NON_WHITESPACE,
216 StringUtils.stripToEmpty(StringUtilsTest.WHITESPACE + StringUtilsTest.NON_WHITESPACE + StringUtilsTest.WHITESPACE));
217 }
218
219 @Test
220 public void testStripToNull_String() {
221 assertNull(StringUtils.stripToNull(null));
222 assertNull(StringUtils.stripToNull(""));
223 assertNull(StringUtils.stripToNull(" "));
224 assertNull(StringUtils.stripToNull(StringUtilsTest.WHITESPACE));
225 assertEquals("ab c", StringUtils.stripToNull(" ab c "));
226 assertEquals(StringUtilsTest.NON_WHITESPACE,
227 StringUtils.stripToNull(StringUtilsTest.WHITESPACE + StringUtilsTest.NON_WHITESPACE + StringUtilsTest.WHITESPACE));
228 }
229
230 @Test
231 public void testTrim() {
232 assertEquals(FOO, StringUtils.trim(FOO + " "));
233 assertEquals(FOO, StringUtils.trim(" " + FOO + " "));
234 assertEquals(FOO, StringUtils.trim(" " + FOO));
235 assertEquals(FOO, StringUtils.trim(FOO + ""));
236 assertEquals("", StringUtils.trim(" \t\r\n\b "));
237 assertEquals("", StringUtils.trim(StringUtilsTest.TRIMMABLE));
238 assertEquals(StringUtilsTest.NON_TRIMMABLE, StringUtils.trim(StringUtilsTest.NON_TRIMMABLE));
239 assertEquals("", StringUtils.trim(""));
240 assertNull(StringUtils.trim(null));
241 }
242
243 @Test
244 public void testTrimToEmpty() {
245 assertEquals(FOO, StringUtils.trimToEmpty(FOO + " "));
246 assertEquals(FOO, StringUtils.trimToEmpty(" " + FOO + " "));
247 assertEquals(FOO, StringUtils.trimToEmpty(" " + FOO));
248 assertEquals(FOO, StringUtils.trimToEmpty(FOO + ""));
249 assertEquals("", StringUtils.trimToEmpty(" \t\r\n\b "));
250 assertEquals("", StringUtils.trimToEmpty(StringUtilsTest.TRIMMABLE));
251 assertEquals(StringUtilsTest.NON_TRIMMABLE, StringUtils.trimToEmpty(StringUtilsTest.NON_TRIMMABLE));
252 assertEquals("", StringUtils.trimToEmpty(""));
253 assertEquals("", StringUtils.trimToEmpty(null));
254 }
255
256 @Test
257 public void testTrimToNull() {
258 assertEquals(FOO, StringUtils.trimToNull(FOO + " "));
259 assertEquals(FOO, StringUtils.trimToNull(" " + FOO + " "));
260 assertEquals(FOO, StringUtils.trimToNull(" " + FOO));
261 assertEquals(FOO, StringUtils.trimToNull(FOO + ""));
262 assertNull(StringUtils.trimToNull(" \t\r\n\b "));
263 assertNull(StringUtils.trimToNull(StringUtilsTest.TRIMMABLE));
264 assertEquals(StringUtilsTest.NON_TRIMMABLE, StringUtils.trimToNull(StringUtilsTest.NON_TRIMMABLE));
265 assertNull(StringUtils.trimToNull(""));
266 assertNull(StringUtils.trimToNull(null));
267 }
268 }