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17 package org.apache.commons.lang3;
18
19 import static org.apache.commons.lang3.LangAssertions.assertIllegalArgumentException;
20 import static org.junit.jupiter.api.Assertions.assertArrayEquals;
21 import static org.junit.jupiter.api.Assertions.assertEquals;
22 import static org.junit.jupiter.api.Assertions.assertFalse;
23 import static org.junit.jupiter.api.Assertions.assertNotNull;
24 import static org.junit.jupiter.api.Assertions.assertNotSame;
25 import static org.junit.jupiter.api.Assertions.assertNull;
26 import static org.junit.jupiter.api.Assertions.assertSame;
27 import static org.junit.jupiter.api.Assertions.assertThrows;
28 import static org.junit.jupiter.api.Assertions.assertTrue;
29 import static org.junit.jupiter.api.Assertions.fail;
30
31 import java.io.Serializable;
32 import java.lang.reflect.Constructor;
33 import java.lang.reflect.Method;
34 import java.lang.reflect.Modifier;
35 import java.util.ArrayList;
36 import java.util.Collections;
37 import java.util.HashSet;
38 import java.util.Iterator;
39 import java.util.List;
40 import java.util.Map;
41 import java.util.Objects;
42 import java.util.Set;
43 import java.util.TreeMap;
44 import java.util.function.Function;
45
46 import org.apache.commons.lang3.ClassUtils.Interfaces;
47 import org.apache.commons.lang3.reflect.testbed.GenericConsumer;
48 import org.apache.commons.lang3.reflect.testbed.GenericParent;
49 import org.apache.commons.lang3.reflect.testbed.StringParameterizedChild;
50 import org.junit.jupiter.api.Assertions;
51 import org.junit.jupiter.api.Test;
52 import org.junit.jupiter.params.ParameterizedTest;
53 import org.junitpioneer.jupiter.params.IntRangeSource;
54
55
56
57
58 @SuppressWarnings("boxing")
59 class ClassUtilsTest extends AbstractLangTest {
60
61 private static class CX implements IB, IA, IE {
62
63 }
64
65 @SuppressWarnings("unused")
66 private static final class CY extends CX implements IB, IC {
67
68 }
69
70 private interface IA {
71
72 }
73
74 private interface IB {
75
76 }
77
78 private interface IC extends ID, IE {
79
80 }
81
82 private interface ID {
83
84 }
85
86 private interface IE extends IF {
87
88 }
89
90 private interface IF {
91
92 }
93
94 private static final class Inner {
95 private static final class DeeplyNested {
96
97 }
98 }
99
100 private static final int MAX_ARRAY_DIMENSIONS = 255;
101
102 private static final String OBJECT_CANONICAL_NAME = "java.lang.Object";
103
104 private void assertGetClassReturnsClass(final Class<?> c) throws Exception {
105 assertEquals(c, ClassUtils.getClass(c.getName()));
106 }
107
108 private void assertGetClassThrowsClassNotFound(final String className) {
109 assertGetClassThrowsException(className, ClassNotFoundException.class);
110 }
111
112 private void assertGetClassThrowsException(final String className, final Class<? extends Exception> exceptionType) {
113 final Exception exception = assertThrows(exceptionType, () -> ClassUtils.getClass(className),
114 "ClassUtils.getClass() should fail with an exception of type " + exceptionType.getName() + " when given class name \"" + className + "\".");
115 if (className != null) {
116 assertEquals(className, exception.getMessage());
117 }
118 }
119
120 private void assertGetClassThrowsNullPointerException(final String className) {
121 assertGetClassThrowsException(className, NullPointerException.class);
122 }
123
124 private int getDimension(final Class<?> clazz) {
125 Objects.requireNonNull(clazz);
126 if (!clazz.isArray()) {
127 fail("Not an array: " + clazz);
128 }
129 final String className = clazz.getName();
130 int dimension = 0;
131 for (final char c : className.toCharArray()) {
132 if (c != '[') {
133 break;
134 }
135 dimension++;
136 }
137 return dimension;
138 }
139
140 @Test
141 void test_convertClassesToClassNames_List() {
142 final List<Class<?>> list = new ArrayList<>();
143 List<String> result = ClassUtils.convertClassesToClassNames(list);
144 assertEquals(0, result.size());
145
146 list.add(String.class);
147 list.add(null);
148 list.add(Object.class);
149 result = ClassUtils.convertClassesToClassNames(list);
150 assertEquals(3, result.size());
151 assertEquals("java.lang.String", result.get(0));
152 assertNull(result.get(1));
153 assertEquals(OBJECT_CANONICAL_NAME, result.get(2));
154
155 @SuppressWarnings("unchecked")
156 final List<Object> olist = (List<Object>) (List<?>) list;
157 olist.add(new Object());
158 assertThrows(ClassCastException.class, () -> ClassUtils.convertClassesToClassNames(list), "Should not have been able to convert list");
159 assertNull(ClassUtils.convertClassesToClassNames(null));
160 }
161
162 @Test
163 void test_convertClassNamesToClasses_List() {
164 final List<String> list = new ArrayList<>();
165 List<Class<?>> result = ClassUtils.convertClassNamesToClasses(list);
166 assertEquals(0, result.size());
167
168 list.add("java.lang.String");
169 list.add("java.lang.xxx");
170 list.add(OBJECT_CANONICAL_NAME);
171 result = ClassUtils.convertClassNamesToClasses(list);
172 assertEquals(3, result.size());
173 assertEquals(String.class, result.get(0));
174 assertNull(result.get(1));
175 assertEquals(Object.class, result.get(2));
176
177 @SuppressWarnings("unchecked")
178 final List<Object> olist = (List<Object>) (List<?>) list;
179 olist.add(new Object());
180 assertThrows(ClassCastException.class, () -> ClassUtils.convertClassNamesToClasses(list), "Should not have been able to convert list");
181 assertNull(ClassUtils.convertClassNamesToClasses(null));
182 }
183
184 @Test
185 void test_getAbbreviatedName_Class() {
186 assertEquals("", ClassUtils.getAbbreviatedName((Class<?>) null, 1));
187 assertEquals("j.l.String", ClassUtils.getAbbreviatedName(String.class, 1));
188 assertEquals("j.l.String", ClassUtils.getAbbreviatedName(String.class, 5));
189 assertEquals("o.a.c.l.ClassUtils", ClassUtils.getAbbreviatedName(ClassUtils.class, 18));
190 assertEquals("j.lang.String", ClassUtils.getAbbreviatedName(String.class, 13));
191 assertEquals("j.lang.String", ClassUtils.getAbbreviatedName(String.class, 15));
192 assertEquals("java.lang.String", ClassUtils.getAbbreviatedName(String.class, 20));
193 }
194
195 @Test
196
197 void test_getAbbreviatedName_Class_NegativeLen() {
198 assertIllegalArgumentException(() -> ClassUtils.getAbbreviatedName(String.class, -10));
199 }
200
201 @Test
202
203 void test_getAbbreviatedName_Class_ZeroLen() {
204 assertIllegalArgumentException(() -> ClassUtils.getAbbreviatedName(String.class, 0));
205 }
206
207 @Test
208 void test_getAbbreviatedName_String() {
209 assertEquals("", ClassUtils.getAbbreviatedName((String) null, 1));
210 assertEquals("", ClassUtils.getAbbreviatedName("", 1));
211 assertEquals("WithoutPackage", ClassUtils.getAbbreviatedName("WithoutPackage", 1));
212 assertEquals("j.l.String", ClassUtils.getAbbreviatedName("java.lang.String", 1));
213 assertEquals("o.a.c.l.ClassUtils", ClassUtils.getAbbreviatedName("org.apache.commons.lang3.ClassUtils", 18));
214 assertEquals("org.apache.commons.lang3.ClassUtils",
215 ClassUtils.getAbbreviatedName("org.apache.commons.lang3.ClassUtils", "org.apache.commons.lang3.ClassUtils".length()));
216 assertEquals("o.a.c.l.ClassUtils", ClassUtils.getAbbreviatedName("o.a.c.l.ClassUtils", 18));
217 assertEquals("o..c.l.ClassUtils", ClassUtils.getAbbreviatedName("o..c.l.ClassUtils", 18));
218 assertEquals(".", ClassUtils.getAbbreviatedName(".", 18));
219 assertEquals(".", ClassUtils.getAbbreviatedName(".", 1));
220 assertEquals("..", ClassUtils.getAbbreviatedName("..", 1));
221 assertEquals("...", ClassUtils.getAbbreviatedName("...", 2));
222 assertEquals("...", ClassUtils.getAbbreviatedName("...", 3));
223 assertEquals("java.lang.String", ClassUtils.getAbbreviatedName("java.lang.String", Integer.MAX_VALUE));
224 assertEquals("j.lang.String", ClassUtils.getAbbreviatedName("java.lang.String", "j.lang.String".length()));
225 assertEquals("j.l.String", ClassUtils.getAbbreviatedName("java.lang.String", "j.lang.String".length() - 1));
226 assertEquals("j.l.String", ClassUtils.getAbbreviatedName("java.lang.String", "j.l.String".length()));
227 assertEquals("j.l.String", ClassUtils.getAbbreviatedName("java.lang.String", "j.l.String".length() - 1));
228 }
229
230
231
232
233
234
235 @Test
236
237 void test_getAbbreviatedName_TooLongHint() {
238 final String className = "java.lang.String";
239 Assertions.assertSame(className, ClassUtils.getAbbreviatedName(className, className.length() + 1));
240 Assertions.assertSame(className, ClassUtils.getAbbreviatedName(className, className.length()));
241 }
242
243 @Test
244 void test_getAllInterfaces_Class() {
245 final List<?> list = ClassUtils.getAllInterfaces(CY.class);
246 assertEquals(6, list.size());
247 assertEquals(IB.class, list.get(0));
248 assertEquals(IC.class, list.get(1));
249 assertEquals(ID.class, list.get(2));
250 assertEquals(IE.class, list.get(3));
251 assertEquals(IF.class, list.get(4));
252 assertEquals(IA.class, list.get(5));
253
254 assertNull(ClassUtils.getAllInterfaces(null));
255 }
256
257 @Test
258 void test_getAllSuperclasses_Class() {
259 final List<?> list = ClassUtils.getAllSuperclasses(CY.class);
260 assertEquals(2, list.size());
261 assertEquals(CX.class, list.get(0));
262 assertEquals(Object.class, list.get(1));
263
264 assertNull(ClassUtils.getAllSuperclasses(null));
265 }
266
267 @Test
268 void test_getCanonicalName_Class() {
269 assertEquals("org.apache.commons.lang3.ClassUtils", ClassUtils.getCanonicalName(ClassUtils.class));
270 assertEquals("java.util.Map.Entry", ClassUtils.getCanonicalName(Map.Entry.class));
271 assertEquals("", ClassUtils.getCanonicalName((Class<?>) null));
272
273 assertEquals("java.lang.String[]", ClassUtils.getCanonicalName(String[].class));
274 assertEquals("java.util.Map.Entry[]", ClassUtils.getCanonicalName(Map.Entry[].class));
275
276
277 assertEquals("boolean", ClassUtils.getCanonicalName(boolean.class));
278 assertEquals("byte", ClassUtils.getCanonicalName(byte.class));
279 assertEquals("char", ClassUtils.getCanonicalName(char.class));
280 assertEquals("short", ClassUtils.getCanonicalName(short.class));
281 assertEquals("int", ClassUtils.getCanonicalName(int.class));
282 assertEquals("long", ClassUtils.getCanonicalName(long.class));
283 assertEquals("float", ClassUtils.getCanonicalName(float.class));
284 assertEquals("double", ClassUtils.getCanonicalName(double.class));
285
286
287 assertEquals("boolean[]", ClassUtils.getCanonicalName(boolean[].class));
288 assertEquals("byte[]", ClassUtils.getCanonicalName(byte[].class));
289 assertEquals("char[]", ClassUtils.getCanonicalName(char[].class));
290 assertEquals("short[]", ClassUtils.getCanonicalName(short[].class));
291 assertEquals("int[]", ClassUtils.getCanonicalName(int[].class));
292 assertEquals("long[]", ClassUtils.getCanonicalName(long[].class));
293 assertEquals("float[]", ClassUtils.getCanonicalName(float[].class));
294 assertEquals("double[]", ClassUtils.getCanonicalName(double[].class));
295
296
297 assertEquals("java.lang.String[][]", ClassUtils.getCanonicalName(String[][].class));
298 assertEquals("java.lang.String[][][]", ClassUtils.getCanonicalName(String[][][].class));
299 assertEquals("java.lang.String[][][][]", ClassUtils.getCanonicalName(String[][][][].class));
300
301
302 final class Named {
303
304 }
305 assertEquals(StringUtils.EMPTY, ClassUtils.getCanonicalName(new Object() {
306
307 }.getClass()));
308 assertEquals(StringUtils.EMPTY, ClassUtils.getCanonicalName(Named.class));
309 assertEquals("org.apache.commons.lang3.ClassUtilsTest.Inner", ClassUtils.getCanonicalName(Inner.class));
310 }
311
312 @Test
313 void test_getCanonicalName_Class_String() {
314 assertEquals("org.apache.commons.lang3.ClassUtils", ClassUtils.getCanonicalName(ClassUtils.class, "X"));
315 assertEquals("java.util.Map.Entry", ClassUtils.getCanonicalName(Map.Entry.class, "X"));
316 assertEquals("X", ClassUtils.getCanonicalName((Class<?>) null, "X"));
317
318 assertEquals("java.lang.String[]", ClassUtils.getCanonicalName(String[].class, "X"));
319 assertEquals("java.util.Map.Entry[]", ClassUtils.getCanonicalName(Map.Entry[].class, "X"));
320
321
322 assertEquals("boolean", ClassUtils.getCanonicalName(boolean.class, "X"));
323 assertEquals("byte", ClassUtils.getCanonicalName(byte.class, "X"));
324 assertEquals("char", ClassUtils.getCanonicalName(char.class, "X"));
325 assertEquals("short", ClassUtils.getCanonicalName(short.class, "X"));
326 assertEquals("int", ClassUtils.getCanonicalName(int.class, "X"));
327 assertEquals("long", ClassUtils.getCanonicalName(long.class, "X"));
328 assertEquals("float", ClassUtils.getCanonicalName(float.class, "X"));
329 assertEquals("double", ClassUtils.getCanonicalName(double.class, "X"));
330
331
332 assertEquals("boolean[]", ClassUtils.getCanonicalName(boolean[].class, "X"));
333 assertEquals("byte[]", ClassUtils.getCanonicalName(byte[].class, "X"));
334 assertEquals("char[]", ClassUtils.getCanonicalName(char[].class, "X"));
335 assertEquals("short[]", ClassUtils.getCanonicalName(short[].class, "X"));
336 assertEquals("int[]", ClassUtils.getCanonicalName(int[].class, "X"));
337 assertEquals("long[]", ClassUtils.getCanonicalName(long[].class, "X"));
338 assertEquals("float[]", ClassUtils.getCanonicalName(float[].class, "X"));
339 assertEquals("double[]", ClassUtils.getCanonicalName(double[].class, "X"));
340
341
342 assertEquals("java.lang.String[][]", ClassUtils.getCanonicalName(String[][].class, "X"));
343 assertEquals("java.lang.String[][][]", ClassUtils.getCanonicalName(String[][][].class, "X"));
344 assertEquals("java.lang.String[][][][]", ClassUtils.getCanonicalName(String[][][][].class, "X"));
345
346
347 final class Named {
348
349 }
350 assertEquals("X", ClassUtils.getCanonicalName(new Object() {
351
352 }.getClass(), "X"));
353 assertEquals("X", ClassUtils.getCanonicalName(Named.class, "X"));
354 assertEquals("org.apache.commons.lang3.ClassUtilsTest.Inner", ClassUtils.getCanonicalName(Inner.class, "X"));
355 assertEquals("X", ClassUtils.getCanonicalName((Object) null, "X"));
356 assertEquals(OBJECT_CANONICAL_NAME, ClassUtils.getCanonicalName(new Object()));
357 }
358
359 @Test
360 void test_getClass() {
361
362 }
363
364 @Test
365 void test_getName_Class() {
366 assertEquals("org.apache.commons.lang3.ClassUtils", ClassUtils.getName(ClassUtils.class));
367 assertEquals("java.util.Map$Entry", ClassUtils.getName(Map.Entry.class));
368 assertEquals("", ClassUtils.getName((Class<?>) null));
369
370 assertEquals("[Ljava.lang.String;", ClassUtils.getName(String[].class));
371 assertEquals("[Ljava.util.Map$Entry;", ClassUtils.getName(Map.Entry[].class));
372
373
374 assertEquals("boolean", ClassUtils.getName(boolean.class));
375 assertEquals("byte", ClassUtils.getName(byte.class));
376 assertEquals("char", ClassUtils.getName(char.class));
377 assertEquals("short", ClassUtils.getName(short.class));
378 assertEquals("int", ClassUtils.getName(int.class));
379 assertEquals("long", ClassUtils.getName(long.class));
380 assertEquals("float", ClassUtils.getName(float.class));
381 assertEquals("double", ClassUtils.getName(double.class));
382
383
384 assertEquals("[Z", ClassUtils.getName(boolean[].class));
385 assertEquals("[B", ClassUtils.getName(byte[].class));
386 assertEquals("[C", ClassUtils.getName(char[].class));
387 assertEquals("[S", ClassUtils.getName(short[].class));
388 assertEquals("[I", ClassUtils.getName(int[].class));
389 assertEquals("[J", ClassUtils.getName(long[].class));
390 assertEquals("[F", ClassUtils.getName(float[].class));
391 assertEquals("[D", ClassUtils.getName(double[].class));
392
393
394 assertEquals("[[Ljava.lang.String;", ClassUtils.getName(String[][].class));
395 assertEquals("[[[Ljava.lang.String;", ClassUtils.getName(String[][][].class));
396 assertEquals("[[[[Ljava.lang.String;", ClassUtils.getName(String[][][][].class));
397
398
399 final class Named {
400
401 }
402 assertEquals("org.apache.commons.lang3.ClassUtilsTest$3", ClassUtils.getName(new Object() {
403
404 }.getClass()));
405 assertEquals("org.apache.commons.lang3.ClassUtilsTest$3Named", ClassUtils.getName(Named.class));
406 assertEquals("org.apache.commons.lang3.ClassUtilsTest$Inner", ClassUtils.getName(Inner.class));
407 assertEquals(OBJECT_CANONICAL_NAME, ClassUtils.getName(new Object()));
408 }
409
410 @Test
411 void test_getName_Object() {
412 assertEquals("org.apache.commons.lang3.ClassUtils", ClassUtils.getName(new ClassUtils(), "<null>"));
413 assertEquals("org.apache.commons.lang3.ClassUtilsTest$Inner", ClassUtils.getName(new Inner(), "<null>"));
414 assertEquals("java.lang.String", ClassUtils.getName("hello", "<null>"));
415 assertEquals("<null>", ClassUtils.getName(null, "<null>"));
416
417
418 final class Named {
419
420 }
421 assertEquals("org.apache.commons.lang3.ClassUtilsTest$4", ClassUtils.getName(new Object() {
422
423 }, "<null>"));
424 assertEquals("org.apache.commons.lang3.ClassUtilsTest$4Named", ClassUtils.getName(new Named(), "<null>"));
425 assertEquals("org.apache.commons.lang3.ClassUtilsTest$Inner", ClassUtils.getName(new Inner(), "<null>"));
426 }
427
428 @Test
429 void test_getPackageCanonicalName_Class() {
430 assertEquals("org.apache.commons.lang3", ClassUtils.getPackageCanonicalName(ClassUtils.class));
431 assertEquals("org.apache.commons.lang3", ClassUtils.getPackageCanonicalName(ClassUtils[].class));
432 assertEquals("org.apache.commons.lang3", ClassUtils.getPackageCanonicalName(ClassUtils[][].class));
433 assertEquals("", ClassUtils.getPackageCanonicalName(int[].class));
434 assertEquals("", ClassUtils.getPackageCanonicalName(int[][].class));
435
436
437 final class Named {
438
439 }
440 assertEquals("org.apache.commons.lang3", ClassUtils.getPackageCanonicalName(new Object() {
441
442 }.getClass()));
443 assertEquals("org.apache.commons.lang3", ClassUtils.getPackageCanonicalName(Named.class));
444 assertEquals("org.apache.commons.lang3", ClassUtils.getPackageCanonicalName(Inner.class));
445 assertEquals(StringUtils.EMPTY, ClassUtils.getPackageCanonicalName((Class<?>) null));
446 }
447
448 @Test
449 void test_getPackageCanonicalName_Object() {
450 assertEquals("<null>", ClassUtils.getPackageCanonicalName(null, "<null>"));
451 assertEquals("org.apache.commons.lang3", ClassUtils.getPackageCanonicalName(new ClassUtils(), "<null>"));
452 assertEquals("org.apache.commons.lang3", ClassUtils.getPackageCanonicalName(new ClassUtils[0], "<null>"));
453 assertEquals("org.apache.commons.lang3", ClassUtils.getPackageCanonicalName(new ClassUtils[0][0], "<null>"));
454 assertEquals("", ClassUtils.getPackageCanonicalName(new int[0], "<null>"));
455 assertEquals("", ClassUtils.getPackageCanonicalName(new int[0][0], "<null>"));
456
457
458 final class Named {
459
460 }
461 assertEquals("org.apache.commons.lang3", ClassUtils.getPackageCanonicalName(new Object() {
462
463 }, "<null>"));
464 assertEquals("org.apache.commons.lang3", ClassUtils.getPackageCanonicalName(new Named(), "<null>"));
465 assertEquals("org.apache.commons.lang3", ClassUtils.getPackageCanonicalName(new Inner(), "<null>"));
466 }
467
468 @Test
469 void test_getPackageCanonicalName_String() {
470 assertEquals("org.apache.commons.lang3", ClassUtils.getPackageCanonicalName("org.apache.commons.lang3.ClassUtils"));
471 assertEquals("org.apache.commons.lang3", ClassUtils.getPackageCanonicalName("[Lorg.apache.commons.lang3.ClassUtils;"));
472 assertEquals("org.apache.commons.lang3", ClassUtils.getPackageCanonicalName("[[Lorg.apache.commons.lang3.ClassUtils;"));
473 assertEquals("org.apache.commons.lang3", ClassUtils.getPackageCanonicalName("[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[Lorg.apache.commons.lang3.ClassUtils;"));
474 assertEquals("org.apache.commons.lang3", ClassUtils.getPackageCanonicalName("org.apache.commons.lang3.ClassUtils[]"));
475 assertEquals("org.apache.commons.lang3", ClassUtils.getPackageCanonicalName("org.apache.commons.lang3.ClassUtils[][]"));
476 assertEquals("org.apache.commons.lang3", ClassUtils.getPackageCanonicalName("org.apache.commons.lang3.ClassUtils[][][][][][][][][][][][][][][][]"));
477 assertEquals("", ClassUtils.getPackageCanonicalName("[I"));
478 assertEquals("", ClassUtils.getPackageCanonicalName("[[I"));
479 assertEquals("", ClassUtils.getPackageCanonicalName("int[]"));
480 assertEquals("", ClassUtils.getPackageCanonicalName("int[][]"));
481
482 assertEquals("org.apache.commons.lang3", ClassUtils.getPackageCanonicalName("org.apache.commons.lang3.ClassUtilsTest$6"));
483 assertEquals("org.apache.commons.lang3", ClassUtils.getPackageCanonicalName("org.apache.commons.lang3.ClassUtilsTest$5Named"));
484 assertEquals("org.apache.commons.lang3", ClassUtils.getPackageCanonicalName("org.apache.commons.lang3.ClassUtilsTest$Inner"));
485 assertEquals("a.b.c.D.e.f", ClassUtils.getPackageCanonicalName("a.b.c.D.e.f.D"));
486 }
487
488 @Test
489 void test_getPackageName_Class() {
490 assertEquals("java.lang", ClassUtils.getPackageName(String.class));
491 assertEquals("java.util", ClassUtils.getPackageName(Map.Entry.class));
492 assertEquals("", ClassUtils.getPackageName((Class<?>) null));
493
494 assertEquals("java.lang", ClassUtils.getPackageName(String[].class));
495
496 assertEquals("", ClassUtils.getPackageName(boolean[].class));
497 assertEquals("", ClassUtils.getPackageName(byte[].class));
498 assertEquals("", ClassUtils.getPackageName(char[].class));
499 assertEquals("", ClassUtils.getPackageName(short[].class));
500 assertEquals("", ClassUtils.getPackageName(int[].class));
501 assertEquals("", ClassUtils.getPackageName(long[].class));
502 assertEquals("", ClassUtils.getPackageName(float[].class));
503 assertEquals("", ClassUtils.getPackageName(double[].class));
504
505 assertEquals("java.lang", ClassUtils.getPackageName(String[][].class));
506 assertEquals("java.lang", ClassUtils.getPackageName(String[][][].class));
507 assertEquals("java.lang", ClassUtils.getPackageName(String[][][][].class));
508
509 final class Named {
510
511 }
512 assertEquals("org.apache.commons.lang3", ClassUtils.getPackageName(new Object() {
513
514 }.getClass()));
515 assertEquals("org.apache.commons.lang3", ClassUtils.getPackageName(Named.class));
516 assertEquals("org.apache.commons.lang3", ClassUtils.getPackageName(new Serializable() {
517 private static final long serialVersionUID = 1L;
518 }.getClass()));
519 assertEquals("java.util.function", ClassUtils.getPackageName(Function.identity().getClass()));
520 }
521
522 @Test
523 void test_getPackageName_Object() {
524 assertEquals("org.apache.commons.lang3", ClassUtils.getPackageName(new ClassUtils(), "<null>"));
525 assertEquals("org.apache.commons.lang3", ClassUtils.getPackageName(new Inner(), "<null>"));
526 assertEquals("<null>", ClassUtils.getPackageName(null, "<null>"));
527 }
528
529 @Test
530 void test_getPackageName_String() {
531 assertEquals("org.apache.commons.lang3", ClassUtils.getPackageName(ClassUtils.class.getName()));
532 assertEquals("java.util", ClassUtils.getPackageName(Map.Entry.class.getName()));
533 assertEquals("", ClassUtils.getPackageName((String) null));
534 assertEquals("", ClassUtils.getPackageName(""));
535 }
536
537 @Test
538 void test_getShortCanonicalName_Class() {
539 assertEquals("ClassUtils", ClassUtils.getShortCanonicalName(ClassUtils.class));
540 assertEquals("ClassUtils[]", ClassUtils.getShortCanonicalName(ClassUtils[].class));
541 assertEquals("ClassUtils[][]", ClassUtils.getShortCanonicalName(ClassUtils[][].class));
542 assertEquals("int[]", ClassUtils.getShortCanonicalName(int[].class));
543 assertEquals("int[][]", ClassUtils.getShortCanonicalName(int[][].class));
544 assertEquals("int[][][][][][][][][][]", ClassUtils.getShortCanonicalName(int[][][][][][][][][][].class));
545
546
547 final class Named {
548
549 }
550 assertEquals("", ClassUtils.getShortCanonicalName(new Object() {
551
552 }.getClass()));
553
554 assertEquals("", ClassUtils.getShortCanonicalName(Named.class));
555 assertEquals("Inner", ClassUtils.getShortCanonicalName(Inner.class));
556 assertEquals(StringUtils.EMPTY, ClassUtils.getShortCanonicalName((Class<?>) null));
557 }
558
559 @Test
560 void test_getShortCanonicalName_Object() {
561 assertEquals("<null>", ClassUtils.getShortCanonicalName(null, "<null>"));
562 assertEquals("ClassUtils", ClassUtils.getShortCanonicalName(new ClassUtils(), "<null>"));
563 assertEquals("ClassUtils[]", ClassUtils.getShortCanonicalName(new ClassUtils[0], "<null>"));
564 assertEquals("ClassUtils[][]", ClassUtils.getShortCanonicalName(new ClassUtils[0][0], "<null>"));
565 assertEquals("int[]", ClassUtils.getShortCanonicalName(new int[0], "<null>"));
566 assertEquals("int[][]", ClassUtils.getShortCanonicalName(new int[0][0], "<null>"));
567 assertEquals("int[][][][][][][][][][]", ClassUtils.getShortCanonicalName(new int[0][0][0][0][0][0][0][0][0][0], "<null>"));
568
569
570 final class Named {
571
572 }
573 assertEquals("", ClassUtils.getShortCanonicalName(new Object() {
574
575 }, "<null>"));
576 assertEquals("", ClassUtils.getShortCanonicalName(new Named(), "<null>"));
577 assertEquals("Inner", ClassUtils.getShortCanonicalName(new Inner(), "<null>"));
578 }
579
580 @Test
581 void test_getShortCanonicalName_String() {
582 assertEquals("", ClassUtils.getShortCanonicalName((String) null));
583 assertEquals("Map.Entry", ClassUtils.getShortCanonicalName(java.util.Map.Entry.class.getName()));
584 assertEquals("Entry", ClassUtils.getShortCanonicalName(java.util.Map.Entry.class.getCanonicalName()));
585 assertEquals("ClassUtils", ClassUtils.getShortCanonicalName("org.apache.commons.lang3.ClassUtils"));
586 assertEquals("ClassUtils[]", ClassUtils.getShortCanonicalName("[Lorg.apache.commons.lang3.ClassUtils;"));
587 assertEquals("ClassUtils[][]", ClassUtils.getShortCanonicalName("[[Lorg.apache.commons.lang3.ClassUtils;"));
588 assertEquals("ClassUtils[]", ClassUtils.getShortCanonicalName("org.apache.commons.lang3.ClassUtils[]"));
589 assertEquals("ClassUtils[][]", ClassUtils.getShortCanonicalName("org.apache.commons.lang3.ClassUtils[][]"));
590 assertEquals("int[]", ClassUtils.getShortCanonicalName("[I"));
591 assertEquals("int[]", ClassUtils.getShortCanonicalName(int[].class.getCanonicalName()));
592 assertEquals("int[]", ClassUtils.getShortCanonicalName(int[].class.getName()));
593 assertEquals("int[][]", ClassUtils.getShortCanonicalName("[[I"));
594 assertEquals("int[]", ClassUtils.getShortCanonicalName("int[]"));
595 assertEquals("int[][]", ClassUtils.getShortCanonicalName("int[][]"));
596 assertEquals("int[][][][][][][][][][][][]", ClassUtils.getShortCanonicalName("int[][][][][][][][][][][][]"));
597
598
599
600 assertEquals("int[]", int[].class.getCanonicalName());
601 assertEquals("[I", int[].class.getName());
602 assertIllegalArgumentException(() -> ClassUtils.getShortCanonicalName(StringUtils.repeat("[", 256) + "I"));
603 assertEquals("int" + StringUtils.repeat("[]", 255), ClassUtils.getShortCanonicalName(StringUtils.repeat("[", 255) + "I"));
604
605
606
607 assertEquals("ClassUtilsTest.6", ClassUtils.getShortCanonicalName("org.apache.commons.lang3.ClassUtilsTest$6"));
608
609 assertEquals("ClassUtilsTest.5Named", ClassUtils.getShortCanonicalName("org.apache.commons.lang3.ClassUtilsTest$5Named"));
610 assertEquals("ClassUtilsTest.Inner", ClassUtils.getShortCanonicalName("org.apache.commons.lang3.ClassUtilsTest$Inner"));
611
612 assertEquals("org.apache.commons.lang3.ClassUtilsTest$11", new org.apache.commons.lang3.ClassUtilsTest() {
613 }.getClass().getName());
614 assertNull(new org.apache.commons.lang3.ClassUtilsTest() {
615 }.getClass().getCanonicalName());
616 assertEquals("String[]", ClassUtils.getShortCanonicalName(String[].class.getName()));
617 assertEquals("String[]", ClassUtils.getShortCanonicalName(String[].class.getCanonicalName()));
618 assertEquals("String[]", ClassUtils.getShortCanonicalName("String[]"));
619
620 assertThrows(IllegalArgumentException.class, () -> ClassUtils.getShortCanonicalName(""));
621 assertThrows(IllegalArgumentException.class, () -> ClassUtils.getShortCanonicalName("["));
622 assertThrows(IllegalArgumentException.class, () -> ClassUtils.getShortCanonicalName("[]"));
623 assertThrows(IllegalArgumentException.class, () -> ClassUtils.getShortCanonicalName("[;"));
624 assertThrows(IllegalArgumentException.class, () -> ClassUtils.getShortCanonicalName("[];"));
625 assertThrows(IllegalArgumentException.class, () -> ClassUtils.getShortCanonicalName(" "));
626 assertThrows(IllegalArgumentException.class, () -> ClassUtils.getShortCanonicalName("[$"));
627 assertThrows(IllegalArgumentException.class, () -> ClassUtils.getShortCanonicalName("[$a"));
628 assertThrows(IllegalArgumentException.class, () -> ClassUtils.getShortCanonicalName("[["));
629 assertThrows(IllegalArgumentException.class, () -> ClassUtils.getShortCanonicalName("[[L"));
630 assertThrows(IllegalArgumentException.class, () -> ClassUtils.getShortCanonicalName("[org.apache.commons.lang3.ClassUtilsTest"));
631 assertThrows(IllegalArgumentException.class, () -> ClassUtils.getShortCanonicalName("[Lorg.apache.commons.lang3.ClassUtilsTest"));
632 }
633
634 @Test
635 void test_getShortClassName_Class() {
636 assertEquals("ClassUtils", ClassUtils.getShortClassName(ClassUtils.class));
637 assertEquals("Map.Entry", ClassUtils.getShortClassName(Map.Entry.class));
638 assertEquals("", ClassUtils.getShortClassName((Class<?>) null));
639
640
641 assertEquals("String[]", ClassUtils.getShortClassName(String[].class));
642 assertEquals("Map.Entry[]", ClassUtils.getShortClassName(Map.Entry[].class));
643
644
645 assertEquals("boolean", ClassUtils.getShortClassName(boolean.class));
646 assertEquals("byte", ClassUtils.getShortClassName(byte.class));
647 assertEquals("char", ClassUtils.getShortClassName(char.class));
648 assertEquals("short", ClassUtils.getShortClassName(short.class));
649 assertEquals("int", ClassUtils.getShortClassName(int.class));
650 assertEquals("long", ClassUtils.getShortClassName(long.class));
651 assertEquals("float", ClassUtils.getShortClassName(float.class));
652 assertEquals("double", ClassUtils.getShortClassName(double.class));
653
654
655 assertEquals("boolean[]", ClassUtils.getShortClassName(boolean[].class));
656 assertEquals("byte[]", ClassUtils.getShortClassName(byte[].class));
657 assertEquals("char[]", ClassUtils.getShortClassName(char[].class));
658 assertEquals("short[]", ClassUtils.getShortClassName(short[].class));
659 assertEquals("int[]", ClassUtils.getShortClassName(int[].class));
660 assertEquals("long[]", ClassUtils.getShortClassName(long[].class));
661 assertEquals("float[]", ClassUtils.getShortClassName(float[].class));
662 assertEquals("double[]", ClassUtils.getShortClassName(double[].class));
663
664
665 assertEquals("String[][]", ClassUtils.getShortClassName(String[][].class));
666 assertEquals("String[][][]", ClassUtils.getShortClassName(String[][][].class));
667 assertEquals("String[][][][]", ClassUtils.getShortClassName(String[][][][].class));
668
669
670 final class Named {
671
672 }
673
674 assertEquals("ClassUtilsTest.13", ClassUtils.getShortClassName(new Object() {
675
676 }.getClass()));
677
678 assertEquals("ClassUtilsTest.10Named", ClassUtils.getShortClassName(Named.class));
679 assertEquals("ClassUtilsTest.Inner", ClassUtils.getShortClassName(Inner.class));
680 }
681
682 @Test
683 void test_getShortClassName_Object() {
684 assertEquals("ClassUtils", ClassUtils.getShortClassName(new ClassUtils(), "<null>"));
685 assertEquals("ClassUtilsTest.Inner", ClassUtils.getShortClassName(new Inner(), "<null>"));
686 assertEquals("String", ClassUtils.getShortClassName("hello", "<null>"));
687 assertEquals("<null>", ClassUtils.getShortClassName(null, "<null>"));
688
689
690 final class Named {
691
692 }
693
694 assertEquals("ClassUtilsTest.14", ClassUtils.getShortClassName(new Object() {
695
696 }, "<null>"));
697
698 assertEquals("ClassUtilsTest.11Named", ClassUtils.getShortClassName(new Named(), "<null>"));
699 assertEquals("ClassUtilsTest.Inner", ClassUtils.getShortClassName(new Inner(), "<null>"));
700 }
701
702 @Test
703 void test_getShortClassName_String() {
704 assertEquals("ClassUtils", ClassUtils.getShortClassName(ClassUtils.class.getName()));
705 assertEquals("Map.Entry", ClassUtils.getShortClassName(Map.Entry.class.getName()));
706 assertEquals("", ClassUtils.getShortClassName((String) null));
707 assertEquals("", ClassUtils.getShortClassName(""));
708 }
709
710 @Test
711 void test_getSimpleName_Class() {
712 assertEquals("ClassUtils", ClassUtils.getSimpleName(ClassUtils.class));
713 assertEquals("Entry", ClassUtils.getSimpleName(Map.Entry.class));
714 assertEquals("", ClassUtils.getSimpleName(null));
715
716
717 assertEquals("String[]", ClassUtils.getSimpleName(String[].class));
718 assertEquals("Entry[]", ClassUtils.getSimpleName(Map.Entry[].class));
719
720
721 assertEquals("boolean", ClassUtils.getSimpleName(boolean.class));
722 assertEquals("byte", ClassUtils.getSimpleName(byte.class));
723 assertEquals("char", ClassUtils.getSimpleName(char.class));
724 assertEquals("short", ClassUtils.getSimpleName(short.class));
725 assertEquals("int", ClassUtils.getSimpleName(int.class));
726 assertEquals("long", ClassUtils.getSimpleName(long.class));
727 assertEquals("float", ClassUtils.getSimpleName(float.class));
728 assertEquals("double", ClassUtils.getSimpleName(double.class));
729
730
731 assertEquals("boolean[]", ClassUtils.getSimpleName(boolean[].class));
732 assertEquals("byte[]", ClassUtils.getSimpleName(byte[].class));
733 assertEquals("char[]", ClassUtils.getSimpleName(char[].class));
734 assertEquals("short[]", ClassUtils.getSimpleName(short[].class));
735 assertEquals("int[]", ClassUtils.getSimpleName(int[].class));
736 assertEquals("long[]", ClassUtils.getSimpleName(long[].class));
737 assertEquals("float[]", ClassUtils.getSimpleName(float[].class));
738 assertEquals("double[]", ClassUtils.getSimpleName(double[].class));
739
740
741 assertEquals("String[][]", ClassUtils.getSimpleName(String[][].class));
742 assertEquals("String[][][]", ClassUtils.getSimpleName(String[][][].class));
743 assertEquals("String[][][][]", ClassUtils.getSimpleName(String[][][][].class));
744
745
746 final class Named {
747
748 }
749 assertEquals("", ClassUtils.getSimpleName(new Object() {
750
751 }.getClass()));
752 assertEquals("Named", ClassUtils.getSimpleName(Named.class));
753 }
754
755 @Test
756 void test_getSimpleName_Object() {
757 assertEquals("ClassUtils", ClassUtils.getSimpleName(new ClassUtils()));
758 assertEquals("Inner", ClassUtils.getSimpleName(new Inner()));
759 assertEquals("String", ClassUtils.getSimpleName("hello"));
760 assertEquals(StringUtils.EMPTY, ClassUtils.getSimpleName(null));
761 assertEquals(StringUtils.EMPTY, ClassUtils.getSimpleName(null));
762 }
763
764 @Test
765 void test_getSimpleName_Object_String() {
766 assertEquals("ClassUtils", ClassUtils.getSimpleName(new ClassUtils(), "<null>"));
767 assertEquals("Inner", ClassUtils.getSimpleName(new Inner(), "<null>"));
768 assertEquals("String", ClassUtils.getSimpleName("hello", "<null>"));
769 assertEquals("<null>", ClassUtils.getSimpleName(null, "<null>"));
770 assertNull(ClassUtils.getSimpleName(null, null));
771 }
772
773 @Test
774 void test_isAssignable() {
775 assertFalse(ClassUtils.isAssignable((Class<?>) null, null));
776 assertFalse(ClassUtils.isAssignable(String.class, null));
777
778 assertTrue(ClassUtils.isAssignable(null, Object.class));
779 assertTrue(ClassUtils.isAssignable(null, Integer.class));
780 assertFalse(ClassUtils.isAssignable(null, Integer.TYPE));
781 assertTrue(ClassUtils.isAssignable(String.class, Object.class));
782 assertTrue(ClassUtils.isAssignable(String.class, String.class));
783 assertFalse(ClassUtils.isAssignable(Object.class, String.class));
784
785 assertTrue(ClassUtils.isAssignable(Integer.TYPE, Integer.class));
786 assertTrue(ClassUtils.isAssignable(Integer.TYPE, Object.class));
787 assertTrue(ClassUtils.isAssignable(Integer.class, Integer.TYPE));
788 assertTrue(ClassUtils.isAssignable(Integer.class, Object.class));
789 assertTrue(ClassUtils.isAssignable(Integer.TYPE, Integer.TYPE));
790 assertTrue(ClassUtils.isAssignable(Integer.class, Integer.class));
791 assertTrue(ClassUtils.isAssignable(Boolean.TYPE, Boolean.class));
792 assertTrue(ClassUtils.isAssignable(Boolean.TYPE, Object.class));
793 assertTrue(ClassUtils.isAssignable(Boolean.class, Boolean.TYPE));
794 assertTrue(ClassUtils.isAssignable(Boolean.class, Object.class));
795 assertTrue(ClassUtils.isAssignable(Boolean.TYPE, Boolean.TYPE));
796 assertTrue(ClassUtils.isAssignable(Boolean.class, Boolean.class));
797 }
798
799 @Test
800 void test_isAssignable_Autoboxing() {
801 assertFalse(ClassUtils.isAssignable((Class<?>) null, null, true));
802 assertFalse(ClassUtils.isAssignable(String.class, null, true));
803 assertTrue(ClassUtils.isAssignable(null, Object.class, true));
804 assertTrue(ClassUtils.isAssignable(null, Integer.class, true));
805 assertFalse(ClassUtils.isAssignable(null, Integer.TYPE, true));
806 assertTrue(ClassUtils.isAssignable(String.class, Object.class, true));
807 assertTrue(ClassUtils.isAssignable(String.class, String.class, true));
808 assertFalse(ClassUtils.isAssignable(Object.class, String.class, true));
809 assertTrue(ClassUtils.isAssignable(Integer.TYPE, Integer.class, true));
810 assertTrue(ClassUtils.isAssignable(Integer.TYPE, Object.class, true));
811 assertTrue(ClassUtils.isAssignable(Integer.class, Integer.TYPE, true));
812 assertTrue(ClassUtils.isAssignable(Integer.class, Object.class, true));
813 assertTrue(ClassUtils.isAssignable(Integer.TYPE, Integer.TYPE, true));
814 assertTrue(ClassUtils.isAssignable(Integer.class, Integer.class, true));
815 assertTrue(ClassUtils.isAssignable(Boolean.TYPE, Boolean.class, true));
816 assertTrue(ClassUtils.isAssignable(Boolean.class, Boolean.TYPE, true));
817 assertTrue(ClassUtils.isAssignable(Boolean.class, Object.class, true));
818 assertTrue(ClassUtils.isAssignable(Boolean.TYPE, Boolean.TYPE, true));
819 assertTrue(ClassUtils.isAssignable(Boolean.class, Boolean.class, true));
820 }
821
822 @Test
823 void test_isAssignable_ClassArray_ClassArray() {
824 final Class<?>[] array2 = new Class[] {Object.class, Object.class};
825 final Class<?>[] array1 = new Class[] {Object.class};
826 final Class<?>[] array1s = new Class[] {String.class};
827 final Class<?>[] array0 = new Class[] {};
828 final Class<?>[] arrayPrimitives = {Integer.TYPE, Boolean.TYPE};
829 final Class<?>[] arrayWrappers = {Integer.class, Boolean.class};
830
831 assertFalse(ClassUtils.isAssignable(array1, array2));
832 assertFalse(ClassUtils.isAssignable(null, array2));
833 assertTrue(ClassUtils.isAssignable(null, array0));
834 assertTrue(ClassUtils.isAssignable(array0, array0));
835 assertTrue(ClassUtils.isAssignable(array0, (Class<?>[]) null));
836 assertTrue(ClassUtils.isAssignable(null, (Class<?>[]) null));
837
838 assertFalse(ClassUtils.isAssignable(array1, array1s));
839 assertTrue(ClassUtils.isAssignable(array1s, array1s));
840 assertTrue(ClassUtils.isAssignable(array1s, array1));
841
842 assertTrue(ClassUtils.isAssignable(arrayPrimitives, arrayWrappers));
843 assertTrue(ClassUtils.isAssignable(arrayWrappers, arrayPrimitives));
844 assertFalse(ClassUtils.isAssignable(arrayPrimitives, array1));
845 assertFalse(ClassUtils.isAssignable(arrayWrappers, array1));
846 assertTrue(ClassUtils.isAssignable(arrayPrimitives, array2));
847 assertTrue(ClassUtils.isAssignable(arrayWrappers, array2));
848 }
849
850 @Test
851 void test_isAssignable_ClassArray_ClassArray_Autoboxing() {
852 final Class<?>[] array2 = new Class[] {Object.class, Object.class};
853 final Class<?>[] array1 = new Class[] {Object.class};
854 final Class<?>[] array1s = new Class[] {String.class};
855 final Class<?>[] array0 = new Class[] {};
856 final Class<?>[] arrayPrimitives = {Integer.TYPE, Boolean.TYPE};
857 final Class<?>[] arrayWrappers = {Integer.class, Boolean.class};
858
859 assertFalse(ClassUtils.isAssignable(array1, array2, true));
860 assertFalse(ClassUtils.isAssignable(null, array2, true));
861 assertTrue(ClassUtils.isAssignable(null, array0, true));
862 assertTrue(ClassUtils.isAssignable(array0, array0, true));
863 assertTrue(ClassUtils.isAssignable(array0, null, true));
864 assertTrue(ClassUtils.isAssignable((Class[]) null, null, true));
865
866 assertFalse(ClassUtils.isAssignable(array1, array1s, true));
867 assertTrue(ClassUtils.isAssignable(array1s, array1s, true));
868 assertTrue(ClassUtils.isAssignable(array1s, array1, true));
869
870 assertTrue(ClassUtils.isAssignable(arrayPrimitives, arrayWrappers, true));
871 assertTrue(ClassUtils.isAssignable(arrayWrappers, arrayPrimitives, true));
872 assertFalse(ClassUtils.isAssignable(arrayPrimitives, array1, true));
873 assertFalse(ClassUtils.isAssignable(arrayWrappers, array1, true));
874 assertTrue(ClassUtils.isAssignable(arrayPrimitives, array2, true));
875 assertTrue(ClassUtils.isAssignable(arrayWrappers, array2, true));
876 }
877
878 @Test
879 void test_isAssignable_ClassArray_ClassArray_NoAutoboxing() {
880 final Class<?>[] array2 = new Class[] {Object.class, Object.class};
881 final Class<?>[] array1 = new Class[] {Object.class};
882 final Class<?>[] array1s = new Class[] {String.class};
883 final Class<?>[] array0 = new Class[] {};
884 final Class<?>[] arrayPrimitives = {Integer.TYPE, Boolean.TYPE};
885 final Class<?>[] arrayWrappers = {Integer.class, Boolean.class};
886
887 assertFalse(ClassUtils.isAssignable(array1, array2, false));
888 assertFalse(ClassUtils.isAssignable(null, array2, false));
889 assertTrue(ClassUtils.isAssignable(null, array0, false));
890 assertTrue(ClassUtils.isAssignable(array0, array0, false));
891 assertTrue(ClassUtils.isAssignable(array0, null, false));
892 assertTrue(ClassUtils.isAssignable((Class[]) null, null, false));
893
894 assertFalse(ClassUtils.isAssignable(array1, array1s, false));
895 assertTrue(ClassUtils.isAssignable(array1s, array1s, false));
896 assertTrue(ClassUtils.isAssignable(array1s, array1, false));
897
898 assertFalse(ClassUtils.isAssignable(arrayPrimitives, arrayWrappers, false));
899 assertFalse(ClassUtils.isAssignable(arrayWrappers, arrayPrimitives, false));
900 assertFalse(ClassUtils.isAssignable(arrayPrimitives, array1, false));
901 assertFalse(ClassUtils.isAssignable(arrayWrappers, array1, false));
902 assertTrue(ClassUtils.isAssignable(arrayWrappers, array2, false));
903 assertFalse(ClassUtils.isAssignable(arrayPrimitives, array2, false));
904 }
905
906 @Test
907 void test_isAssignable_DefaultUnboxing_Widening() {
908
909 assertFalse(ClassUtils.isAssignable(Byte.class, Character.TYPE), "byte -> char");
910 assertTrue(ClassUtils.isAssignable(Byte.class, Byte.TYPE), "byte -> byte");
911 assertTrue(ClassUtils.isAssignable(Byte.class, Short.TYPE), "byte -> short");
912 assertTrue(ClassUtils.isAssignable(Byte.class, Integer.TYPE), "byte -> int");
913 assertTrue(ClassUtils.isAssignable(Byte.class, Long.TYPE), "byte -> long");
914 assertTrue(ClassUtils.isAssignable(Byte.class, Float.TYPE), "byte -> float");
915 assertTrue(ClassUtils.isAssignable(Byte.class, Double.TYPE), "byte -> double");
916 assertFalse(ClassUtils.isAssignable(Byte.class, Boolean.TYPE), "byte -> boolean");
917
918
919 assertFalse(ClassUtils.isAssignable(Short.class, Character.TYPE), "short -> char");
920 assertFalse(ClassUtils.isAssignable(Short.class, Byte.TYPE), "short -> byte");
921 assertTrue(ClassUtils.isAssignable(Short.class, Short.TYPE), "short -> short");
922 assertTrue(ClassUtils.isAssignable(Short.class, Integer.TYPE), "short -> int");
923 assertTrue(ClassUtils.isAssignable(Short.class, Long.TYPE), "short -> long");
924 assertTrue(ClassUtils.isAssignable(Short.class, Float.TYPE), "short -> float");
925 assertTrue(ClassUtils.isAssignable(Short.class, Double.TYPE), "short -> double");
926 assertFalse(ClassUtils.isAssignable(Short.class, Boolean.TYPE), "short -> boolean");
927
928
929 assertTrue(ClassUtils.isAssignable(Character.class, Character.TYPE), "char -> char");
930 assertFalse(ClassUtils.isAssignable(Character.class, Byte.TYPE), "char -> byte");
931 assertFalse(ClassUtils.isAssignable(Character.class, Short.TYPE), "char -> short");
932 assertTrue(ClassUtils.isAssignable(Character.class, Integer.TYPE), "char -> int");
933 assertTrue(ClassUtils.isAssignable(Character.class, Long.TYPE), "char -> long");
934 assertTrue(ClassUtils.isAssignable(Character.class, Float.TYPE), "char -> float");
935 assertTrue(ClassUtils.isAssignable(Character.class, Double.TYPE), "char -> double");
936 assertFalse(ClassUtils.isAssignable(Character.class, Boolean.TYPE), "char -> boolean");
937
938
939 assertFalse(ClassUtils.isAssignable(Integer.class, Character.TYPE), "int -> char");
940 assertFalse(ClassUtils.isAssignable(Integer.class, Byte.TYPE), "int -> byte");
941 assertFalse(ClassUtils.isAssignable(Integer.class, Short.TYPE), "int -> short");
942 assertTrue(ClassUtils.isAssignable(Integer.class, Integer.TYPE), "int -> int");
943 assertTrue(ClassUtils.isAssignable(Integer.class, Long.TYPE), "int -> long");
944 assertTrue(ClassUtils.isAssignable(Integer.class, Float.TYPE), "int -> float");
945 assertTrue(ClassUtils.isAssignable(Integer.class, Double.TYPE), "int -> double");
946 assertFalse(ClassUtils.isAssignable(Integer.class, Boolean.TYPE), "int -> boolean");
947
948
949 assertFalse(ClassUtils.isAssignable(Long.class, Character.TYPE), "long -> char");
950 assertFalse(ClassUtils.isAssignable(Long.class, Byte.TYPE), "long -> byte");
951 assertFalse(ClassUtils.isAssignable(Long.class, Short.TYPE), "long -> short");
952 assertFalse(ClassUtils.isAssignable(Long.class, Integer.TYPE), "long -> int");
953 assertTrue(ClassUtils.isAssignable(Long.class, Long.TYPE), "long -> long");
954 assertTrue(ClassUtils.isAssignable(Long.class, Float.TYPE), "long -> float");
955 assertTrue(ClassUtils.isAssignable(Long.class, Double.TYPE), "long -> double");
956 assertFalse(ClassUtils.isAssignable(Long.class, Boolean.TYPE), "long -> boolean");
957
958
959 assertFalse(ClassUtils.isAssignable(Float.class, Character.TYPE), "float -> char");
960 assertFalse(ClassUtils.isAssignable(Float.class, Byte.TYPE), "float -> byte");
961 assertFalse(ClassUtils.isAssignable(Float.class, Short.TYPE), "float -> short");
962 assertFalse(ClassUtils.isAssignable(Float.class, Integer.TYPE), "float -> int");
963 assertFalse(ClassUtils.isAssignable(Float.class, Long.TYPE), "float -> long");
964 assertTrue(ClassUtils.isAssignable(Float.class, Float.TYPE), "float -> float");
965 assertTrue(ClassUtils.isAssignable(Float.class, Double.TYPE), "float -> double");
966 assertFalse(ClassUtils.isAssignable(Float.class, Boolean.TYPE), "float -> boolean");
967
968
969 assertFalse(ClassUtils.isAssignable(Double.class, Character.TYPE), "double -> char");
970 assertFalse(ClassUtils.isAssignable(Double.class, Byte.TYPE), "double -> byte");
971 assertFalse(ClassUtils.isAssignable(Double.class, Short.TYPE), "double -> short");
972 assertFalse(ClassUtils.isAssignable(Double.class, Integer.TYPE), "double -> int");
973 assertFalse(ClassUtils.isAssignable(Double.class, Long.TYPE), "double -> long");
974 assertFalse(ClassUtils.isAssignable(Double.class, Float.TYPE), "double -> float");
975 assertTrue(ClassUtils.isAssignable(Double.class, Double.TYPE), "double -> double");
976 assertFalse(ClassUtils.isAssignable(Double.class, Boolean.TYPE), "double -> boolean");
977
978
979 assertFalse(ClassUtils.isAssignable(Boolean.class, Character.TYPE), "boolean -> char");
980 assertFalse(ClassUtils.isAssignable(Boolean.class, Byte.TYPE), "boolean -> byte");
981 assertFalse(ClassUtils.isAssignable(Boolean.class, Short.TYPE), "boolean -> short");
982 assertFalse(ClassUtils.isAssignable(Boolean.class, Integer.TYPE), "boolean -> int");
983 assertFalse(ClassUtils.isAssignable(Boolean.class, Long.TYPE), "boolean -> long");
984 assertFalse(ClassUtils.isAssignable(Boolean.class, Float.TYPE), "boolean -> float");
985 assertFalse(ClassUtils.isAssignable(Boolean.class, Double.TYPE), "boolean -> double");
986 assertTrue(ClassUtils.isAssignable(Boolean.class, Boolean.TYPE), "boolean -> boolean");
987 }
988
989 @Test
990 void test_isAssignable_NoAutoboxing() {
991 assertFalse(ClassUtils.isAssignable((Class<?>) null, null, false));
992 assertFalse(ClassUtils.isAssignable(String.class, null, false));
993 assertTrue(ClassUtils.isAssignable(null, Object.class, false));
994 assertTrue(ClassUtils.isAssignable(null, Integer.class, false));
995 assertFalse(ClassUtils.isAssignable(null, Integer.TYPE, false));
996 assertTrue(ClassUtils.isAssignable(String.class, Object.class, false));
997 assertTrue(ClassUtils.isAssignable(String.class, String.class, false));
998 assertFalse(ClassUtils.isAssignable(Object.class, String.class, false));
999 assertFalse(ClassUtils.isAssignable(Integer.TYPE, Integer.class, false));
1000 assertFalse(ClassUtils.isAssignable(Integer.TYPE, Object.class, false));
1001 assertFalse(ClassUtils.isAssignable(Integer.class, Integer.TYPE, false));
1002 assertTrue(ClassUtils.isAssignable(Integer.TYPE, Integer.TYPE, false));
1003 assertTrue(ClassUtils.isAssignable(Integer.class, Integer.class, false));
1004 assertFalse(ClassUtils.isAssignable(Boolean.TYPE, Boolean.class, false));
1005 assertFalse(ClassUtils.isAssignable(Boolean.TYPE, Object.class, false));
1006 assertFalse(ClassUtils.isAssignable(Boolean.class, Boolean.TYPE, false));
1007 assertTrue(ClassUtils.isAssignable(Boolean.class, Object.class, false));
1008 assertTrue(ClassUtils.isAssignable(Boolean.TYPE, Boolean.TYPE, false));
1009 assertTrue(ClassUtils.isAssignable(Boolean.class, Boolean.class, false));
1010 }
1011
1012 @Test
1013 void test_isAssignable_Unboxing_Widening() {
1014
1015 assertFalse(ClassUtils.isAssignable(Byte.class, Character.TYPE, true), "byte -> char");
1016 assertTrue(ClassUtils.isAssignable(Byte.class, Byte.TYPE, true), "byte -> byte");
1017 assertTrue(ClassUtils.isAssignable(Byte.class, Short.TYPE, true), "byte -> short");
1018 assertTrue(ClassUtils.isAssignable(Byte.class, Integer.TYPE, true), "byte -> int");
1019 assertTrue(ClassUtils.isAssignable(Byte.class, Long.TYPE, true), "byte -> long");
1020 assertTrue(ClassUtils.isAssignable(Byte.class, Float.TYPE, true), "byte -> float");
1021 assertTrue(ClassUtils.isAssignable(Byte.class, Double.TYPE, true), "byte -> double");
1022 assertFalse(ClassUtils.isAssignable(Byte.class, Boolean.TYPE, true), "byte -> boolean");
1023
1024 assertFalse(ClassUtils.isAssignable(Short.class, Character.TYPE, true), "short -> char");
1025 assertFalse(ClassUtils.isAssignable(Short.class, Byte.TYPE, true), "short -> byte");
1026 assertTrue(ClassUtils.isAssignable(Short.class, Short.TYPE, true), "short -> short");
1027 assertTrue(ClassUtils.isAssignable(Short.class, Integer.TYPE, true), "short -> int");
1028 assertTrue(ClassUtils.isAssignable(Short.class, Long.TYPE, true), "short -> long");
1029 assertTrue(ClassUtils.isAssignable(Short.class, Float.TYPE, true), "short -> float");
1030 assertTrue(ClassUtils.isAssignable(Short.class, Double.TYPE, true), "short -> double");
1031 assertFalse(ClassUtils.isAssignable(Short.class, Boolean.TYPE, true), "short -> boolean");
1032
1033 assertTrue(ClassUtils.isAssignable(Character.class, Character.TYPE, true), "char -> char");
1034 assertFalse(ClassUtils.isAssignable(Character.class, Byte.TYPE, true), "char -> byte");
1035 assertFalse(ClassUtils.isAssignable(Character.class, Short.TYPE, true), "char -> short");
1036 assertTrue(ClassUtils.isAssignable(Character.class, Integer.TYPE, true), "char -> int");
1037 assertTrue(ClassUtils.isAssignable(Character.class, Long.TYPE, true), "char -> long");
1038 assertTrue(ClassUtils.isAssignable(Character.class, Float.TYPE, true), "char -> float");
1039 assertTrue(ClassUtils.isAssignable(Character.class, Double.TYPE, true), "char -> double");
1040 assertFalse(ClassUtils.isAssignable(Character.class, Boolean.TYPE, true), "char -> boolean");
1041
1042 assertFalse(ClassUtils.isAssignable(Integer.class, Character.TYPE, true), "int -> char");
1043 assertFalse(ClassUtils.isAssignable(Integer.class, Byte.TYPE, true), "int -> byte");
1044 assertFalse(ClassUtils.isAssignable(Integer.class, Short.TYPE, true), "int -> short");
1045 assertTrue(ClassUtils.isAssignable(Integer.class, Integer.TYPE, true), "int -> int");
1046 assertTrue(ClassUtils.isAssignable(Integer.class, Long.TYPE, true), "int -> long");
1047 assertTrue(ClassUtils.isAssignable(Integer.class, Float.TYPE, true), "int -> float");
1048 assertTrue(ClassUtils.isAssignable(Integer.class, Double.TYPE, true), "int -> double");
1049 assertFalse(ClassUtils.isAssignable(Integer.class, Boolean.TYPE, true), "int -> boolean");
1050
1051 assertFalse(ClassUtils.isAssignable(Long.class, Character.TYPE, true), "long -> char");
1052 assertFalse(ClassUtils.isAssignable(Long.class, Byte.TYPE, true), "long -> byte");
1053 assertFalse(ClassUtils.isAssignable(Long.class, Short.TYPE, true), "long -> short");
1054 assertFalse(ClassUtils.isAssignable(Long.class, Integer.TYPE, true), "long -> int");
1055 assertTrue(ClassUtils.isAssignable(Long.class, Long.TYPE, true), "long -> long");
1056 assertTrue(ClassUtils.isAssignable(Long.class, Float.TYPE, true), "long -> float");
1057 assertTrue(ClassUtils.isAssignable(Long.class, Double.TYPE, true), "long -> double");
1058 assertFalse(ClassUtils.isAssignable(Long.class, Boolean.TYPE, true), "long -> boolean");
1059
1060 assertFalse(ClassUtils.isAssignable(Float.class, Character.TYPE, true), "float -> char");
1061 assertFalse(ClassUtils.isAssignable(Float.class, Byte.TYPE, true), "float -> byte");
1062 assertFalse(ClassUtils.isAssignable(Float.class, Short.TYPE, true), "float -> short");
1063 assertFalse(ClassUtils.isAssignable(Float.class, Integer.TYPE, true), "float -> int");
1064 assertFalse(ClassUtils.isAssignable(Float.class, Long.TYPE, true), "float -> long");
1065 assertTrue(ClassUtils.isAssignable(Float.class, Float.TYPE, true), "float -> float");
1066 assertTrue(ClassUtils.isAssignable(Float.class, Double.TYPE, true), "float -> double");
1067 assertFalse(ClassUtils.isAssignable(Float.class, Boolean.TYPE, true), "float -> boolean");
1068
1069 assertFalse(ClassUtils.isAssignable(Double.class, Character.TYPE, true), "double -> char");
1070 assertFalse(ClassUtils.isAssignable(Double.class, Byte.TYPE, true), "double -> byte");
1071 assertFalse(ClassUtils.isAssignable(Double.class, Short.TYPE, true), "double -> short");
1072 assertFalse(ClassUtils.isAssignable(Double.class, Integer.TYPE, true), "double -> int");
1073 assertFalse(ClassUtils.isAssignable(Double.class, Long.TYPE, true), "double -> long");
1074 assertFalse(ClassUtils.isAssignable(Double.class, Float.TYPE, true), "double -> float");
1075 assertTrue(ClassUtils.isAssignable(Double.class, Double.TYPE, true), "double -> double");
1076 assertFalse(ClassUtils.isAssignable(Double.class, Boolean.TYPE, true), "double -> boolean");
1077
1078 assertFalse(ClassUtils.isAssignable(Boolean.class, Character.TYPE, true), "boolean -> char");
1079 assertFalse(ClassUtils.isAssignable(Boolean.class, Byte.TYPE, true), "boolean -> byte");
1080 assertFalse(ClassUtils.isAssignable(Boolean.class, Short.TYPE, true), "boolean -> short");
1081 assertFalse(ClassUtils.isAssignable(Boolean.class, Integer.TYPE, true), "boolean -> int");
1082 assertFalse(ClassUtils.isAssignable(Boolean.class, Long.TYPE, true), "boolean -> long");
1083 assertFalse(ClassUtils.isAssignable(Boolean.class, Float.TYPE, true), "boolean -> float");
1084 assertFalse(ClassUtils.isAssignable(Boolean.class, Double.TYPE, true), "boolean -> double");
1085 assertTrue(ClassUtils.isAssignable(Boolean.class, Boolean.TYPE, true), "boolean -> boolean");
1086 }
1087
1088 @Test
1089 void test_isAssignable_Widening() {
1090
1091 assertFalse(ClassUtils.isAssignable(Byte.TYPE, Character.TYPE), "byte -> char");
1092 assertTrue(ClassUtils.isAssignable(Byte.TYPE, Byte.TYPE), "byte -> byte");
1093 assertTrue(ClassUtils.isAssignable(Byte.TYPE, Short.TYPE), "byte -> short");
1094 assertTrue(ClassUtils.isAssignable(Byte.TYPE, Integer.TYPE), "byte -> int");
1095 assertTrue(ClassUtils.isAssignable(Byte.TYPE, Long.TYPE), "byte -> long");
1096 assertTrue(ClassUtils.isAssignable(Byte.TYPE, Float.TYPE), "byte -> float");
1097 assertTrue(ClassUtils.isAssignable(Byte.TYPE, Double.TYPE), "byte -> double");
1098 assertFalse(ClassUtils.isAssignable(Byte.TYPE, Boolean.TYPE), "byte -> boolean");
1099
1100 assertFalse(ClassUtils.isAssignable(Short.TYPE, Character.TYPE), "short -> char");
1101 assertFalse(ClassUtils.isAssignable(Short.TYPE, Byte.TYPE), "short -> byte");
1102 assertTrue(ClassUtils.isAssignable(Short.TYPE, Short.TYPE), "short -> short");
1103 assertTrue(ClassUtils.isAssignable(Short.TYPE, Integer.TYPE), "short -> int");
1104 assertTrue(ClassUtils.isAssignable(Short.TYPE, Long.TYPE), "short -> long");
1105 assertTrue(ClassUtils.isAssignable(Short.TYPE, Float.TYPE), "short -> float");
1106 assertTrue(ClassUtils.isAssignable(Short.TYPE, Double.TYPE), "short -> double");
1107 assertFalse(ClassUtils.isAssignable(Short.TYPE, Boolean.TYPE), "short -> boolean");
1108
1109 assertTrue(ClassUtils.isAssignable(Character.TYPE, Character.TYPE), "char -> char");
1110 assertFalse(ClassUtils.isAssignable(Character.TYPE, Byte.TYPE), "char -> byte");
1111 assertFalse(ClassUtils.isAssignable(Character.TYPE, Short.TYPE), "char -> short");
1112 assertTrue(ClassUtils.isAssignable(Character.TYPE, Integer.TYPE), "char -> int");
1113 assertTrue(ClassUtils.isAssignable(Character.TYPE, Long.TYPE), "char -> long");
1114 assertTrue(ClassUtils.isAssignable(Character.TYPE, Float.TYPE), "char -> float");
1115 assertTrue(ClassUtils.isAssignable(Character.TYPE, Double.TYPE), "char -> double");
1116 assertFalse(ClassUtils.isAssignable(Character.TYPE, Boolean.TYPE), "char -> boolean");
1117
1118 assertFalse(ClassUtils.isAssignable(Integer.TYPE, Character.TYPE), "int -> char");
1119 assertFalse(ClassUtils.isAssignable(Integer.TYPE, Byte.TYPE), "int -> byte");
1120 assertFalse(ClassUtils.isAssignable(Integer.TYPE, Short.TYPE), "int -> short");
1121 assertTrue(ClassUtils.isAssignable(Integer.TYPE, Integer.TYPE), "int -> int");
1122 assertTrue(ClassUtils.isAssignable(Integer.TYPE, Long.TYPE), "int -> long");
1123 assertTrue(ClassUtils.isAssignable(Integer.TYPE, Float.TYPE), "int -> float");
1124 assertTrue(ClassUtils.isAssignable(Integer.TYPE, Double.TYPE), "int -> double");
1125 assertFalse(ClassUtils.isAssignable(Integer.TYPE, Boolean.TYPE), "int -> boolean");
1126
1127 assertFalse(ClassUtils.isAssignable(Long.TYPE, Character.TYPE), "long -> char");
1128 assertFalse(ClassUtils.isAssignable(Long.TYPE, Byte.TYPE), "long -> byte");
1129 assertFalse(ClassUtils.isAssignable(Long.TYPE, Short.TYPE), "long -> short");
1130 assertFalse(ClassUtils.isAssignable(Long.TYPE, Integer.TYPE), "long -> int");
1131 assertTrue(ClassUtils.isAssignable(Long.TYPE, Long.TYPE), "long -> long");
1132 assertTrue(ClassUtils.isAssignable(Long.TYPE, Float.TYPE), "long -> float");
1133 assertTrue(ClassUtils.isAssignable(Long.TYPE, Double.TYPE), "long -> double");
1134 assertFalse(ClassUtils.isAssignable(Long.TYPE, Boolean.TYPE), "long -> boolean");
1135
1136 assertFalse(ClassUtils.isAssignable(Float.TYPE, Character.TYPE), "float -> char");
1137 assertFalse(ClassUtils.isAssignable(Float.TYPE, Byte.TYPE), "float -> byte");
1138 assertFalse(ClassUtils.isAssignable(Float.TYPE, Short.TYPE), "float -> short");
1139 assertFalse(ClassUtils.isAssignable(Float.TYPE, Integer.TYPE), "float -> int");
1140 assertFalse(ClassUtils.isAssignable(Float.TYPE, Long.TYPE), "float -> long");
1141 assertTrue(ClassUtils.isAssignable(Float.TYPE, Float.TYPE), "float -> float");
1142 assertTrue(ClassUtils.isAssignable(Float.TYPE, Double.TYPE), "float -> double");
1143 assertFalse(ClassUtils.isAssignable(Float.TYPE, Boolean.TYPE), "float -> boolean");
1144
1145 assertFalse(ClassUtils.isAssignable(Double.TYPE, Character.TYPE), "double -> char");
1146 assertFalse(ClassUtils.isAssignable(Double.TYPE, Byte.TYPE), "double -> byte");
1147 assertFalse(ClassUtils.isAssignable(Double.TYPE, Short.TYPE), "double -> short");
1148 assertFalse(ClassUtils.isAssignable(Double.TYPE, Integer.TYPE), "double -> int");
1149 assertFalse(ClassUtils.isAssignable(Double.TYPE, Long.TYPE), "double -> long");
1150 assertFalse(ClassUtils.isAssignable(Double.TYPE, Float.TYPE), "double -> float");
1151 assertTrue(ClassUtils.isAssignable(Double.TYPE, Double.TYPE), "double -> double");
1152 assertFalse(ClassUtils.isAssignable(Double.TYPE, Boolean.TYPE), "double -> boolean");
1153
1154 assertFalse(ClassUtils.isAssignable(Boolean.TYPE, Character.TYPE), "boolean -> char");
1155 assertFalse(ClassUtils.isAssignable(Boolean.TYPE, Byte.TYPE), "boolean -> byte");
1156 assertFalse(ClassUtils.isAssignable(Boolean.TYPE, Short.TYPE), "boolean -> short");
1157 assertFalse(ClassUtils.isAssignable(Boolean.TYPE, Integer.TYPE), "boolean -> int");
1158 assertFalse(ClassUtils.isAssignable(Boolean.TYPE, Long.TYPE), "boolean -> long");
1159 assertFalse(ClassUtils.isAssignable(Boolean.TYPE, Float.TYPE), "boolean -> float");
1160 assertFalse(ClassUtils.isAssignable(Boolean.TYPE, Double.TYPE), "boolean -> double");
1161 assertTrue(ClassUtils.isAssignable(Boolean.TYPE, Boolean.TYPE), "boolean -> boolean");
1162 }
1163
1164 @Test
1165 void test_isInnerClass_Class() {
1166 assertTrue(ClassUtils.isInnerClass(Inner.class));
1167 assertTrue(ClassUtils.isInnerClass(Map.Entry.class));
1168 assertTrue(ClassUtils.isInnerClass(new Cloneable() {
1169
1170 }.getClass()));
1171 assertFalse(ClassUtils.isInnerClass(this.getClass()));
1172 assertFalse(ClassUtils.isInnerClass(String.class));
1173 assertFalse(ClassUtils.isInnerClass(null));
1174 }
1175
1176 @Test
1177 void testComparable() {
1178 final TreeMap<Class<?>, String> map = new TreeMap<>(ClassUtils.comparator());
1179 map.put(String.class, "lastEntry");
1180 map.toString();
1181 map.put(Character.class, "firstEntry");
1182 map.toString();
1183 assertEquals("firstEntry", map.firstEntry().getValue());
1184 assertEquals(Character.class, map.firstEntry().getKey());
1185
1186 assertEquals("lastEntry", map.lastEntry().getValue());
1187 assertEquals(String.class, map.lastEntry().getKey());
1188
1189 map.put(null, "null");
1190 map.toString();
1191 assertEquals("null", map.get(null));
1192 }
1193
1194 @Test
1195 void testConstructor() {
1196 assertNotNull(new ClassUtils());
1197 final Constructor<?>[] cons = ClassUtils.class.getDeclaredConstructors();
1198 assertEquals(1, cons.length);
1199 assertTrue(Modifier.isPublic(cons[0].getModifiers()));
1200 assertTrue(Modifier.isPublic(ClassUtils.class.getModifiers()));
1201 assertFalse(Modifier.isFinal(ClassUtils.class.getModifiers()));
1202 }
1203
1204 @ParameterizedTest
1205 @IntRangeSource(from = 1, to = 255)
1206 void testGetClassArray(final int dimensions) throws ClassNotFoundException {
1207 assertEquals(dimensions,
1208 getDimension(ClassUtils.getClass("org.apache.commons.lang3.ClassUtilsTest$Inner.DeeplyNested" + StringUtils.repeat("[]", dimensions))));
1209 assertEquals(dimensions, getDimension(ClassUtils.getClass("java.lang.String" + StringUtils.repeat("[]", dimensions))));
1210 }
1211
1212 @ParameterizedTest
1213 @IntRangeSource(from = 256, to = 300)
1214 void testGetClassArrayIllegal(final int dimensions) throws ClassNotFoundException {
1215 assertThrows(IllegalArgumentException.class, () -> assertEquals(dimensions,
1216 getDimension(ClassUtils.getClass("org.apache.commons.lang3.ClassUtilsTest$Inner.DeeplyNested" + StringUtils.repeat("[]", dimensions)))));
1217 assertThrows(IllegalArgumentException.class,
1218 () -> assertEquals(dimensions, getDimension(ClassUtils.getClass("java.lang.String" + StringUtils.repeat("[]", dimensions)))));
1219 }
1220
1221 @Test
1222 void testGetClassByNormalNameArrays() throws ClassNotFoundException {
1223 assertEquals(int[].class, ClassUtils.getClass("int[]"));
1224 assertEquals(long[].class, ClassUtils.getClass("long[]"));
1225 assertEquals(short[].class, ClassUtils.getClass("short[]"));
1226 assertEquals(byte[].class, ClassUtils.getClass("byte[]"));
1227 assertEquals(char[].class, ClassUtils.getClass("char[]"));
1228 assertEquals(float[].class, ClassUtils.getClass("float[]"));
1229 assertEquals(double[].class, ClassUtils.getClass("double[]"));
1230 assertEquals(boolean[].class, ClassUtils.getClass("boolean[]"));
1231 assertEquals(String[].class, ClassUtils.getClass("java.lang.String[]"));
1232 assertEquals(java.util.Map.Entry[].class, ClassUtils.getClass("java.util.Map.Entry[]"));
1233 assertEquals(java.util.Map.Entry[].class, ClassUtils.getClass("java.util.Map$Entry[]"));
1234 assertEquals(java.util.Map.Entry[].class, ClassUtils.getClass("[Ljava.util.Map.Entry;"));
1235 assertEquals(java.util.Map.Entry[].class, ClassUtils.getClass("[Ljava.util.Map$Entry;"));
1236 assertEquals(java.util.Map.Entry[][].class, ClassUtils.getClass("[[Ljava.util.Map$Entry;"));
1237 }
1238
1239 @Test
1240 void testGetClassByNormalNameArrays2D() throws ClassNotFoundException {
1241 assertEquals(int[][].class, ClassUtils.getClass("int[][]"));
1242 assertEquals(long[][].class, ClassUtils.getClass("long[][]"));
1243 assertEquals(short[][].class, ClassUtils.getClass("short[][]"));
1244 assertEquals(byte[][].class, ClassUtils.getClass("byte[][]"));
1245 assertEquals(char[][].class, ClassUtils.getClass("char[][]"));
1246 assertEquals(float[][].class, ClassUtils.getClass("float[][]"));
1247 assertEquals(double[][].class, ClassUtils.getClass("double[][]"));
1248 assertEquals(boolean[][].class, ClassUtils.getClass("boolean[][]"));
1249 assertEquals(String[][].class, ClassUtils.getClass("java.lang.String[][]"));
1250 }
1251
1252 @Test
1253 void testGetClassClassNotFound() throws Exception {
1254 assertGetClassThrowsClassNotFound("bool");
1255 assertGetClassThrowsClassNotFound("bool[]");
1256 assertGetClassThrowsClassNotFound("integer[]");
1257 assertGetClassThrowsClassNotFound("org.apache.commons.lang3.ClassUtilsTest.AClassThatCannotBeFound");
1258 }
1259
1260 @Test
1261 void testGetClassInner() throws ClassNotFoundException {
1262 assertEquals(Inner.DeeplyNested.class, ClassUtils.getClass("org.apache.commons.lang3.ClassUtilsTest.Inner.DeeplyNested"));
1263 assertEquals(Inner.DeeplyNested.class, ClassUtils.getClass("org.apache.commons.lang3.ClassUtilsTest.Inner$DeeplyNested"));
1264 assertEquals(Inner.DeeplyNested.class, ClassUtils.getClass("org.apache.commons.lang3.ClassUtilsTest$Inner$DeeplyNested"));
1265 assertEquals(Inner.DeeplyNested.class, ClassUtils.getClass("org.apache.commons.lang3.ClassUtilsTest$Inner.DeeplyNested"));
1266 assertEquals(Inner.DeeplyNested[].class, ClassUtils.getClass("org.apache.commons.lang3.ClassUtilsTest$Inner.DeeplyNested[]"));
1267
1268 assertEquals(Inner.DeeplyNested.class, ClassUtils.getClass("org.apache.commons.lang3.ClassUtilsTest.Inner.DeeplyNested", true));
1269 assertEquals(Inner.DeeplyNested.class, ClassUtils.getClass("org.apache.commons.lang3.ClassUtilsTest.Inner$DeeplyNested", true));
1270 assertEquals(Inner.DeeplyNested.class, ClassUtils.getClass("org.apache.commons.lang3.ClassUtilsTest$Inner$DeeplyNested", true));
1271 assertEquals(Inner.DeeplyNested.class, ClassUtils.getClass("org.apache.commons.lang3.ClassUtilsTest$Inner.DeeplyNested", true));
1272
1273 final ClassLoader classLoader = Inner.DeeplyNested.class.getClassLoader();
1274 assertEquals(Inner.DeeplyNested.class, ClassUtils.getClass(classLoader, "org.apache.commons.lang3.ClassUtilsTest.Inner.DeeplyNested"));
1275 assertEquals(Inner.DeeplyNested.class, ClassUtils.getClass(classLoader, "org.apache.commons.lang3.ClassUtilsTest.Inner$DeeplyNested"));
1276 assertEquals(Inner.DeeplyNested.class, ClassUtils.getClass(classLoader, "org.apache.commons.lang3.ClassUtilsTest$Inner$DeeplyNested"));
1277 assertEquals(Inner.DeeplyNested.class, ClassUtils.getClass(classLoader, "org.apache.commons.lang3.ClassUtilsTest$Inner.DeeplyNested"));
1278 }
1279
1280 @Test
1281 void testGetClassInvalidArguments() throws Exception {
1282 assertGetClassThrowsNullPointerException(null);
1283 assertGetClassThrowsClassNotFound("[][][]");
1284 assertGetClassThrowsClassNotFound("[[]");
1285 assertGetClassThrowsClassNotFound("[");
1286 assertGetClassThrowsClassNotFound("java.lang.String][");
1287 assertGetClassThrowsClassNotFound(".hello.world");
1288 assertGetClassThrowsClassNotFound("hello..world");
1289 }
1290
1291 @ParameterizedTest
1292 @IntRangeSource(from = 65536, to = 65555)
1293 void testGetClassLengthIllegal(final int classNameLength) throws ClassNotFoundException {
1294 assertThrows(IllegalArgumentException.class, () -> ClassUtils.getClass(StringUtils.repeat("a", classNameLength)));
1295 assertThrows(IllegalArgumentException.class, () -> assertEquals(classNameLength, ClassUtils.getClass(StringUtils.repeat("a.", classNameLength / 2))));
1296 }
1297
1298 @Test
1299 void testGetClassLongestCheck() throws ClassNotFoundException {
1300 final String maxClassName = StringUtils.repeat("a", 65535);
1301 final String maxDimensions = StringUtils.repeat("[]", MAX_ARRAY_DIMENSIONS);
1302 final String maxOpens = StringUtils.repeat("[", MAX_ARRAY_DIMENSIONS);
1303 assertThrows(ClassNotFoundException.class, () -> ClassUtils.getClass(maxClassName));
1304 assertNotNull(ClassUtils.getClass("java.lang.String" + maxDimensions));
1305 assertThrows(ClassNotFoundException.class, () -> ClassUtils.getClass(maxClassName + maxDimensions));
1306 assertThrows(ClassNotFoundException.class, () -> ClassUtils.getClass(maxOpens + "L" + maxClassName + ";"));
1307
1308 assertThrows(IllegalArgumentException.class, () -> ClassUtils.getClass(maxOpens + "[L" + maxClassName + ";"));
1309 }
1310
1311 @Test
1312 void testGetClassRawPrimitives() throws ClassNotFoundException {
1313 assertEquals(int.class, ClassUtils.getClass("int"));
1314 assertEquals(long.class, ClassUtils.getClass("long"));
1315 assertEquals(short.class, ClassUtils.getClass("short"));
1316 assertEquals(byte.class, ClassUtils.getClass("byte"));
1317 assertEquals(char.class, ClassUtils.getClass("char"));
1318 assertEquals(float.class, ClassUtils.getClass("float"));
1319 assertEquals(double.class, ClassUtils.getClass("double"));
1320 assertEquals(boolean.class, ClassUtils.getClass("boolean"));
1321 assertEquals(void.class, ClassUtils.getClass("void"));
1322 }
1323
1324 @Test
1325 void testGetClassWithArrayClasses() throws Exception {
1326 assertGetClassReturnsClass(String[].class);
1327 assertGetClassReturnsClass(int[].class);
1328 assertGetClassReturnsClass(long[].class);
1329 assertGetClassReturnsClass(short[].class);
1330 assertGetClassReturnsClass(byte[].class);
1331 assertGetClassReturnsClass(char[].class);
1332 assertGetClassReturnsClass(float[].class);
1333 assertGetClassReturnsClass(double[].class);
1334 assertGetClassReturnsClass(boolean[].class);
1335 }
1336
1337 @Test
1338 void testGetClassWithArrayClasses2D() throws Exception {
1339 assertGetClassReturnsClass(String[][].class);
1340 assertGetClassReturnsClass(int[][].class);
1341 assertGetClassReturnsClass(long[][].class);
1342 assertGetClassReturnsClass(short[][].class);
1343 assertGetClassReturnsClass(byte[][].class);
1344 assertGetClassReturnsClass(char[][].class);
1345 assertGetClassReturnsClass(float[][].class);
1346 assertGetClassReturnsClass(double[][].class);
1347 assertGetClassReturnsClass(boolean[][].class);
1348 }
1349
1350 @Test
1351 void testGetComponentType() {
1352 final CX[] newArray = {};
1353 @SuppressWarnings("unchecked")
1354 final Class<CX[]> classCxArray = (Class<CX[]>) newArray.getClass();
1355
1356 final Class<CX> componentType = ClassUtils.getComponentType(classCxArray);
1357 assertEquals(CX.class, componentType);
1358 assertNull(ClassUtils.getComponentType(null));
1359 }
1360
1361 @Test
1362 void testGetPublicMethod() throws Exception {
1363
1364 final Set<?> set = Collections.unmodifiableSet(new HashSet<>());
1365 final Method isEmptyMethod = ClassUtils.getPublicMethod(set.getClass(), "isEmpty");
1366 assertTrue(Modifier.isPublic(isEmptyMethod.getDeclaringClass().getModifiers()));
1367 assertTrue((Boolean) isEmptyMethod.invoke(set));
1368
1369
1370 final Method toStringMethod = ClassUtils.getPublicMethod(Object.class, "toString");
1371 assertEquals(Object.class.getMethod("toString"), toStringMethod);
1372 }
1373
1374 @Test
1375 void testHierarchyExcludingInterfaces() {
1376 final Iterator<Class<?>> iter = ClassUtils.hierarchy(StringParameterizedChild.class).iterator();
1377 assertEquals(StringParameterizedChild.class, iter.next());
1378 assertEquals(GenericParent.class, iter.next());
1379 assertEquals(Object.class, iter.next());
1380 assertFalse(iter.hasNext());
1381 }
1382
1383 @Test
1384 void testHierarchyIncludingInterfaces() {
1385 final Iterator<Class<?>> iter = ClassUtils.hierarchy(StringParameterizedChild.class, Interfaces.INCLUDE).iterator();
1386 assertEquals(StringParameterizedChild.class, iter.next());
1387 assertEquals(GenericParent.class, iter.next());
1388 assertEquals(GenericConsumer.class, iter.next());
1389 assertEquals(Object.class, iter.next());
1390 assertFalse(iter.hasNext());
1391 }
1392
1393 @Test
1394 void testIsPrimitiveOrWrapper() {
1395
1396 assertTrue(ClassUtils.isPrimitiveOrWrapper(Boolean.class), "Boolean.class");
1397 assertTrue(ClassUtils.isPrimitiveOrWrapper(Byte.class), "Byte.class");
1398 assertTrue(ClassUtils.isPrimitiveOrWrapper(Character.class), "Character.class");
1399 assertTrue(ClassUtils.isPrimitiveOrWrapper(Short.class), "Short.class");
1400 assertTrue(ClassUtils.isPrimitiveOrWrapper(Integer.class), "Integer.class");
1401 assertTrue(ClassUtils.isPrimitiveOrWrapper(Long.class), "Long.class");
1402 assertTrue(ClassUtils.isPrimitiveOrWrapper(Double.class), "Double.class");
1403 assertTrue(ClassUtils.isPrimitiveOrWrapper(Float.class), "Float.class");
1404
1405 assertTrue(ClassUtils.isPrimitiveOrWrapper(Boolean.TYPE), "boolean");
1406 assertTrue(ClassUtils.isPrimitiveOrWrapper(Byte.TYPE), "byte");
1407 assertTrue(ClassUtils.isPrimitiveOrWrapper(Character.TYPE), "char");
1408 assertTrue(ClassUtils.isPrimitiveOrWrapper(Short.TYPE), "short");
1409 assertTrue(ClassUtils.isPrimitiveOrWrapper(Integer.TYPE), "int");
1410 assertTrue(ClassUtils.isPrimitiveOrWrapper(Long.TYPE), "long");
1411 assertTrue(ClassUtils.isPrimitiveOrWrapper(Double.TYPE), "double");
1412 assertTrue(ClassUtils.isPrimitiveOrWrapper(Float.TYPE), "float");
1413 assertTrue(ClassUtils.isPrimitiveOrWrapper(Void.TYPE), "Void.TYPE");
1414
1415 assertFalse(ClassUtils.isPrimitiveOrWrapper(null), "null");
1416 assertFalse(ClassUtils.isPrimitiveOrWrapper(Void.class), "Void.class");
1417 assertFalse(ClassUtils.isPrimitiveOrWrapper(String.class), "String.class");
1418 assertFalse(ClassUtils.isPrimitiveOrWrapper(this.getClass()), "this.getClass()");
1419 }
1420
1421 @Test
1422 void testIsPrimitiveWrapper() {
1423
1424
1425 assertTrue(ClassUtils.isPrimitiveWrapper(Boolean.class), "Boolean.class");
1426 assertTrue(ClassUtils.isPrimitiveWrapper(Byte.class), "Byte.class");
1427 assertTrue(ClassUtils.isPrimitiveWrapper(Character.class), "Character.class");
1428 assertTrue(ClassUtils.isPrimitiveWrapper(Short.class), "Short.class");
1429 assertTrue(ClassUtils.isPrimitiveWrapper(Integer.class), "Integer.class");
1430 assertTrue(ClassUtils.isPrimitiveWrapper(Long.class), "Long.class");
1431 assertTrue(ClassUtils.isPrimitiveWrapper(Double.class), "Double.class");
1432 assertTrue(ClassUtils.isPrimitiveWrapper(Float.class), "Float.class");
1433
1434
1435 assertFalse(ClassUtils.isPrimitiveWrapper(Boolean.TYPE), "boolean");
1436 assertFalse(ClassUtils.isPrimitiveWrapper(Byte.TYPE), "byte");
1437 assertFalse(ClassUtils.isPrimitiveWrapper(Character.TYPE), "char");
1438 assertFalse(ClassUtils.isPrimitiveWrapper(Short.TYPE), "short");
1439 assertFalse(ClassUtils.isPrimitiveWrapper(Integer.TYPE), "int");
1440 assertFalse(ClassUtils.isPrimitiveWrapper(Long.TYPE), "long");
1441 assertFalse(ClassUtils.isPrimitiveWrapper(Double.TYPE), "double");
1442 assertFalse(ClassUtils.isPrimitiveWrapper(Float.TYPE), "float");
1443
1444
1445 assertFalse(ClassUtils.isPrimitiveWrapper(null), "null");
1446 assertFalse(ClassUtils.isPrimitiveWrapper(Void.class), "Void.class");
1447 assertFalse(ClassUtils.isPrimitiveWrapper(Void.TYPE), "Void.TYPE");
1448 assertFalse(ClassUtils.isPrimitiveWrapper(String.class), "String.class");
1449 assertFalse(ClassUtils.isPrimitiveWrapper(this.getClass()), "this.getClass()");
1450 }
1451
1452 @Test
1453 void testPrimitivesToWrappers() {
1454
1455
1456 assertNull(ClassUtils.primitivesToWrappers((Class<?>[]) null), "null -> null");
1457
1458 assertArrayEquals(ArrayUtils.EMPTY_CLASS_ARRAY, ClassUtils.primitivesToWrappers(), "empty -> empty");
1459 final Class<?>[] castNull = ClassUtils.primitivesToWrappers((Class<?>) null);
1460 assertArrayEquals(new Class<?>[] {null}, castNull, "(Class<?>) null -> [null]");
1461
1462 assertArrayEquals(ArrayUtils.EMPTY_CLASS_ARRAY, ClassUtils.primitivesToWrappers(ArrayUtils.EMPTY_CLASS_ARRAY), "empty -> empty");
1463
1464
1465 final Class<?>[] primitives = new Class[] {Boolean.TYPE, Byte.TYPE, Character.TYPE, Short.TYPE, Integer.TYPE, Long.TYPE, Double.TYPE, Float.TYPE,
1466 String.class, ClassUtils.class};
1467 final Class<?>[] wrappers = ClassUtils.primitivesToWrappers(primitives);
1468
1469 for (int i = 0; i < primitives.length; i++) {
1470
1471 final Class<?> primitive = primitives[i];
1472 final Class<?> expectedWrapper = ClassUtils.primitiveToWrapper(primitive);
1473
1474 assertEquals(expectedWrapper, wrappers[i], primitive + " -> " + expectedWrapper);
1475 }
1476
1477
1478 final Class<?>[] noPrimitives = new Class[] {String.class, ClassUtils.class, Void.TYPE};
1479
1480 assertNotSame(noPrimitives, ClassUtils.primitivesToWrappers(noPrimitives), "unmodified");
1481 }
1482
1483 @Test
1484 void testPrimitiveToWrapper() {
1485
1486
1487 assertEquals(Boolean.class, ClassUtils.primitiveToWrapper(Boolean.TYPE), "boolean -> Boolean.class");
1488 assertEquals(Byte.class, ClassUtils.primitiveToWrapper(Byte.TYPE), "byte -> Byte.class");
1489 assertEquals(Character.class, ClassUtils.primitiveToWrapper(Character.TYPE), "char -> Character.class");
1490 assertEquals(Short.class, ClassUtils.primitiveToWrapper(Short.TYPE), "short -> Short.class");
1491 assertEquals(Integer.class, ClassUtils.primitiveToWrapper(Integer.TYPE), "int -> Integer.class");
1492 assertEquals(Long.class, ClassUtils.primitiveToWrapper(Long.TYPE), "long -> Long.class");
1493 assertEquals(Double.class, ClassUtils.primitiveToWrapper(Double.TYPE), "double -> Double.class");
1494 assertEquals(Float.class, ClassUtils.primitiveToWrapper(Float.TYPE), "float -> Float.class");
1495
1496
1497 assertEquals(String.class, ClassUtils.primitiveToWrapper(String.class), "String.class -> String.class");
1498 assertEquals(ClassUtils.class, ClassUtils.primitiveToWrapper(ClassUtils.class), "ClassUtils.class -> ClassUtils.class");
1499 assertEquals(Void.TYPE, ClassUtils.primitiveToWrapper(Void.TYPE), "Void.TYPE -> Void.TYPE");
1500
1501
1502 assertNull(ClassUtils.primitiveToWrapper(null), "null -> null");
1503 }
1504
1505
1506
1507 @Test
1508 void testShowJavaBug() throws Exception {
1509
1510 final Set<?> set = Collections.unmodifiableSet(new HashSet<>());
1511 final Method isEmptyMethod = set.getClass().getMethod("isEmpty");
1512 assertThrows(IllegalAccessException.class, () -> isEmptyMethod.invoke(set));
1513 }
1514
1515 @Test
1516 void testToClass_object() {
1517
1518 assertNull(ClassUtils.toClass((Object[]) null));
1519
1520
1521 assertArrayEquals(ArrayUtils.EMPTY_CLASS_ARRAY, ClassUtils.toClass(), "empty -> empty");
1522 final Class<?>[] castNull = ClassUtils.toClass((Object) null);
1523 assertArrayEquals(new Object[] {null}, castNull, "(Object) null -> [null]");
1524
1525 assertSame(ArrayUtils.EMPTY_CLASS_ARRAY, ClassUtils.toClass(ArrayUtils.EMPTY_OBJECT_ARRAY));
1526
1527 assertArrayEquals(new Class[] {String.class, Integer.class, Double.class}, ClassUtils.toClass("Test", Integer.valueOf(1), Double.valueOf(99d)));
1528
1529 assertArrayEquals(new Class[] {String.class, null, Double.class}, ClassUtils.toClass("Test", null, Double.valueOf(99d)));
1530 }
1531
1532 @Test
1533 void testWithInterleavingWhitespace() throws ClassNotFoundException {
1534 assertEquals(int[].class, ClassUtils.getClass(" int [ ] "));
1535 assertEquals(long[].class, ClassUtils.getClass("\rlong\t[\n]\r"));
1536 assertEquals(short[].class, ClassUtils.getClass("\tshort \t\t[]"));
1537 assertEquals(byte[].class, ClassUtils.getClass("byte[\t\t\n\r] "));
1538 }
1539
1540 @Test
1541 void testWrappersToPrimitives() {
1542
1543 final Class<?>[] classes = {Boolean.class, Byte.class, Character.class, Short.class, Integer.class, Long.class, Float.class, Double.class, String.class,
1544 ClassUtils.class, null};
1545
1546 final Class<?>[] primitives = ClassUtils.wrappersToPrimitives(classes);
1547
1548 assertEquals(classes.length, primitives.length, "Wrong length of result array");
1549 for (int i = 0; i < classes.length; i++) {
1550 final Class<?> expectedPrimitive = ClassUtils.wrapperToPrimitive(classes[i]);
1551 assertEquals(expectedPrimitive, primitives[i], classes[i] + " -> " + expectedPrimitive);
1552 }
1553 }
1554
1555 @Test
1556 void testWrappersToPrimitivesEmpty() {
1557 final Class<?>[] empty = new Class[0];
1558 assertArrayEquals(empty, ClassUtils.wrappersToPrimitives(empty), "Wrong result for empty input");
1559 }
1560
1561 @Test
1562 void testWrappersToPrimitivesNull() {
1563
1564 assertNull(ClassUtils.wrappersToPrimitives((Class<?>[]) null), "Wrong result for null input");
1565
1566 assertArrayEquals(ArrayUtils.EMPTY_CLASS_ARRAY, ClassUtils.wrappersToPrimitives(), "empty -> empty");
1567 final Class<?>[] castNull = ClassUtils.wrappersToPrimitives((Class<?>) null);
1568 assertArrayEquals(new Class<?>[] {null}, castNull, "(Class<?>) null -> [null]");
1569 }
1570
1571 @Test
1572 void testWrapperToPrimitive() {
1573
1574 final Class<?>[] primitives = {Boolean.TYPE, Byte.TYPE, Character.TYPE, Short.TYPE, Integer.TYPE, Long.TYPE, Float.TYPE, Double.TYPE};
1575 for (final Class<?> primitive : primitives) {
1576 final Class<?> wrapperCls = ClassUtils.primitiveToWrapper(primitive);
1577 assertFalse(wrapperCls.isPrimitive(), "Still primitive");
1578 assertEquals(primitive, ClassUtils.wrapperToPrimitive(wrapperCls), wrapperCls + " -> " + primitive);
1579 }
1580 }
1581
1582 @Test
1583 void testWrapperToPrimitiveNoWrapper() {
1584 assertNull(ClassUtils.wrapperToPrimitive(String.class), "Wrong result for non wrapper class");
1585 }
1586
1587 @Test
1588 void testWrapperToPrimitiveNull() {
1589 assertNull(ClassUtils.wrapperToPrimitive(null), "Wrong result for null class");
1590 }
1591 }