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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.Test;
51 import org.junit.jupiter.params.ParameterizedTest;
52 import org.junitpioneer.jupiter.params.IntRangeSource;
53
54
55
56
57 @SuppressWarnings("boxing")
58 class ClassUtilsTest extends AbstractLangTest {
59
60 private static class CX implements IB, IA, IE {
61
62 }
63
64 @SuppressWarnings("unused")
65 private static final class CY extends CX implements IB, IC {
66
67 }
68
69 private interface IA {
70
71 }
72
73 private interface IB {
74
75 }
76
77 private interface IC extends ID, IE {
78
79 }
80
81 private interface ID {
82
83 }
84
85 private interface IE extends IF {
86
87 }
88
89 private interface IF {
90
91 }
92
93 private static final class Inner {
94 private static final class DeeplyNested {
95
96 }
97 }
98
99 private static final int MAX_ARRAY_DIMENSIONS = 255;
100
101 private static final String OBJECT_CANONICAL_NAME = "java.lang.Object";
102
103 private void assertGetClassReturnsClass(final Class<?> c) throws Exception {
104 assertEquals(c, ClassUtils.getClass(c.getName()));
105 }
106
107 private void assertGetClassThrowsClassNotFound(final String className) {
108 assertGetClassThrowsException(className, ClassNotFoundException.class);
109 }
110
111 private void assertGetClassThrowsException(final String className, final Class<? extends Exception> exceptionType) {
112 final Exception exception = assertThrows(exceptionType, () -> ClassUtils.getClass(className),
113 "ClassUtils.getClass() should fail with an exception of type " + exceptionType.getName() + " when given class name \"" + className + "\".");
114 if (className != null) {
115 assertEquals(className, exception.getMessage());
116 }
117 }
118
119 private void assertGetClassThrowsNullPointerException(final String className) {
120 assertGetClassThrowsException(className, NullPointerException.class);
121 }
122
123 private int getDimension(final Class<?> clazz) {
124 Objects.requireNonNull(clazz, "clazz");
125 if (!clazz.isArray()) {
126 fail("Not an array: " + clazz);
127 }
128 final String className = clazz.getName();
129 int dimension = 0;
130 for (final char c : className.toCharArray()) {
131 if (c != '[') {
132 break;
133 }
134 dimension++;
135 }
136 return dimension;
137 }
138
139 @Test
140 void test_convertClassesToClassNames_List() {
141 final List<Class<?>> list = new ArrayList<>();
142 List<String> result = ClassUtils.convertClassesToClassNames(list);
143 assertEquals(0, result.size());
144
145 list.add(String.class);
146 list.add(null);
147 list.add(Object.class);
148 result = ClassUtils.convertClassesToClassNames(list);
149 assertEquals(3, result.size());
150 assertEquals("java.lang.String", result.get(0));
151 assertNull(result.get(1));
152 assertEquals(OBJECT_CANONICAL_NAME, result.get(2));
153
154 @SuppressWarnings("unchecked")
155 final List<Object> olist = (List<Object>) (List<?>) list;
156 olist.add(new Object());
157 assertThrows(ClassCastException.class, () -> ClassUtils.convertClassesToClassNames(list), "Should not have been able to convert list");
158 assertNull(ClassUtils.convertClassesToClassNames(null));
159 }
160
161 @Test
162 void test_convertClassNamesToClasses_List() {
163 final List<String> list = new ArrayList<>();
164 List<Class<?>> result = ClassUtils.convertClassNamesToClasses(list);
165 assertEquals(0, result.size());
166
167 list.add("java.lang.String");
168 list.add("java.lang.xxx");
169 list.add(OBJECT_CANONICAL_NAME);
170 result = ClassUtils.convertClassNamesToClasses(list);
171 assertEquals(3, result.size());
172 assertEquals(String.class, result.get(0));
173 assertNull(result.get(1));
174 assertEquals(Object.class, result.get(2));
175
176 @SuppressWarnings("unchecked")
177 final List<Object> olist = (List<Object>) (List<?>) list;
178 olist.add(new Object());
179 assertThrows(ClassCastException.class, () -> ClassUtils.convertClassNamesToClasses(list), "Should not have been able to convert list");
180 assertNull(ClassUtils.convertClassNamesToClasses(null));
181 }
182
183 @Test
184 void test_getAbbreviatedName_Class() {
185 assertEquals("", ClassUtils.getAbbreviatedName((Class<?>) null, 1));
186 assertEquals("j.l.String", ClassUtils.getAbbreviatedName(String.class, 1));
187 assertEquals("j.l.String", ClassUtils.getAbbreviatedName(String.class, 5));
188 assertEquals("o.a.c.l.ClassUtils", ClassUtils.getAbbreviatedName(ClassUtils.class, 18));
189 assertEquals("j.lang.String", ClassUtils.getAbbreviatedName(String.class, 13));
190 assertEquals("j.lang.String", ClassUtils.getAbbreviatedName(String.class, 15));
191 assertEquals("java.lang.String", ClassUtils.getAbbreviatedName(String.class, 20));
192 }
193
194 @Test
195
196 void test_getAbbreviatedName_Class_NegativeLen() {
197 assertIllegalArgumentException(() -> ClassUtils.getAbbreviatedName(String.class, -10));
198 }
199
200 @Test
201
202 void test_getAbbreviatedName_Class_ZeroLen() {
203 assertIllegalArgumentException(() -> ClassUtils.getAbbreviatedName(String.class, 0));
204 }
205
206 @Test
207 void test_getAbbreviatedName_String() {
208 assertEquals("", ClassUtils.getAbbreviatedName((String) null, 1));
209 assertEquals("", ClassUtils.getAbbreviatedName("", 1));
210 assertEquals("WithoutPackage", ClassUtils.getAbbreviatedName("WithoutPackage", 1));
211 assertEquals("j.l.String", ClassUtils.getAbbreviatedName("java.lang.String", 1));
212 assertEquals("o.a.c.l.ClassUtils", ClassUtils.getAbbreviatedName("org.apache.commons.lang3.ClassUtils", 18));
213 assertEquals("org.apache.commons.lang3.ClassUtils",
214 ClassUtils.getAbbreviatedName("org.apache.commons.lang3.ClassUtils", "org.apache.commons.lang3.ClassUtils".length()));
215 assertEquals("o.a.c.l.ClassUtils", ClassUtils.getAbbreviatedName("o.a.c.l.ClassUtils", 18));
216 assertEquals("o..c.l.ClassUtils", ClassUtils.getAbbreviatedName("o..c.l.ClassUtils", 18));
217 assertEquals(".", ClassUtils.getAbbreviatedName(".", 18));
218 assertEquals(".", ClassUtils.getAbbreviatedName(".", 1));
219 assertEquals("..", ClassUtils.getAbbreviatedName("..", 1));
220 assertEquals("...", ClassUtils.getAbbreviatedName("...", 2));
221 assertEquals("...", ClassUtils.getAbbreviatedName("...", 3));
222 assertEquals("java.lang.String", ClassUtils.getAbbreviatedName("java.lang.String", Integer.MAX_VALUE));
223 assertEquals("j.lang.String", ClassUtils.getAbbreviatedName("java.lang.String", "j.lang.String".length()));
224 assertEquals("j.l.String", ClassUtils.getAbbreviatedName("java.lang.String", "j.lang.String".length() - 1));
225 assertEquals("j.l.String", ClassUtils.getAbbreviatedName("java.lang.String", "j.l.String".length()));
226 assertEquals("j.l.String", ClassUtils.getAbbreviatedName("java.lang.String", "j.l.String".length() - 1));
227 }
228
229
230
231
232
233
234 @Test
235
236 void test_getAbbreviatedName_TooLongHint() {
237 final String className = "java.lang.String";
238 assertSame(className, ClassUtils.getAbbreviatedName(className, className.length() + 1));
239 assertSame(className, ClassUtils.getAbbreviatedName(className, className.length()));
240 }
241
242 @Test
243 void test_getAllInterfaces_Class() {
244 final List<?> list = ClassUtils.getAllInterfaces(CY.class);
245 assertEquals(6, list.size());
246 assertEquals(IB.class, list.get(0));
247 assertEquals(IC.class, list.get(1));
248 assertEquals(ID.class, list.get(2));
249 assertEquals(IE.class, list.get(3));
250 assertEquals(IF.class, list.get(4));
251 assertEquals(IA.class, list.get(5));
252
253 assertNull(ClassUtils.getAllInterfaces(null));
254 }
255
256 @Test
257 void test_getAllSuperclasses_Class() {
258 final List<?> list = ClassUtils.getAllSuperclasses(CY.class);
259 assertEquals(2, list.size());
260 assertEquals(CX.class, list.get(0));
261 assertEquals(Object.class, list.get(1));
262
263 assertNull(ClassUtils.getAllSuperclasses(null));
264 }
265
266 @Test
267 void test_getCanonicalName_Class() {
268 assertEquals("org.apache.commons.lang3.ClassUtils", ClassUtils.getCanonicalName(ClassUtils.class));
269 assertEquals("java.util.Map.Entry", ClassUtils.getCanonicalName(Map.Entry.class));
270 assertEquals("", ClassUtils.getCanonicalName((Class<?>) null));
271
272 assertEquals("java.lang.String[]", ClassUtils.getCanonicalName(String[].class));
273 assertEquals("java.util.Map.Entry[]", ClassUtils.getCanonicalName(Map.Entry[].class));
274
275
276 assertEquals("boolean", ClassUtils.getCanonicalName(boolean.class));
277 assertEquals("byte", ClassUtils.getCanonicalName(byte.class));
278 assertEquals("char", ClassUtils.getCanonicalName(char.class));
279 assertEquals("short", ClassUtils.getCanonicalName(short.class));
280 assertEquals("int", ClassUtils.getCanonicalName(int.class));
281 assertEquals("long", ClassUtils.getCanonicalName(long.class));
282 assertEquals("float", ClassUtils.getCanonicalName(float.class));
283 assertEquals("double", ClassUtils.getCanonicalName(double.class));
284
285
286 assertEquals("boolean[]", ClassUtils.getCanonicalName(boolean[].class));
287 assertEquals("byte[]", ClassUtils.getCanonicalName(byte[].class));
288 assertEquals("char[]", ClassUtils.getCanonicalName(char[].class));
289 assertEquals("short[]", ClassUtils.getCanonicalName(short[].class));
290 assertEquals("int[]", ClassUtils.getCanonicalName(int[].class));
291 assertEquals("long[]", ClassUtils.getCanonicalName(long[].class));
292 assertEquals("float[]", ClassUtils.getCanonicalName(float[].class));
293 assertEquals("double[]", ClassUtils.getCanonicalName(double[].class));
294
295
296 assertEquals("java.lang.String[][]", ClassUtils.getCanonicalName(String[][].class));
297 assertEquals("java.lang.String[][][]", ClassUtils.getCanonicalName(String[][][].class));
298 assertEquals("java.lang.String[][][][]", ClassUtils.getCanonicalName(String[][][][].class));
299
300
301 final class Named {
302
303 }
304 assertEquals(StringUtils.EMPTY, ClassUtils.getCanonicalName(new Object() {
305
306 }.getClass()));
307 assertEquals(StringUtils.EMPTY, ClassUtils.getCanonicalName(Named.class));
308 assertEquals("org.apache.commons.lang3.ClassUtilsTest.Inner", ClassUtils.getCanonicalName(Inner.class));
309 }
310
311 @Test
312 void test_getCanonicalName_Class_String() {
313 assertEquals("org.apache.commons.lang3.ClassUtils", ClassUtils.getCanonicalName(ClassUtils.class, "X"));
314 assertEquals("java.util.Map.Entry", ClassUtils.getCanonicalName(Map.Entry.class, "X"));
315 assertEquals("X", ClassUtils.getCanonicalName((Class<?>) null, "X"));
316
317 assertEquals("java.lang.String[]", ClassUtils.getCanonicalName(String[].class, "X"));
318 assertEquals("java.util.Map.Entry[]", ClassUtils.getCanonicalName(Map.Entry[].class, "X"));
319
320
321 assertEquals("boolean", ClassUtils.getCanonicalName(boolean.class, "X"));
322 assertEquals("byte", ClassUtils.getCanonicalName(byte.class, "X"));
323 assertEquals("char", ClassUtils.getCanonicalName(char.class, "X"));
324 assertEquals("short", ClassUtils.getCanonicalName(short.class, "X"));
325 assertEquals("int", ClassUtils.getCanonicalName(int.class, "X"));
326 assertEquals("long", ClassUtils.getCanonicalName(long.class, "X"));
327 assertEquals("float", ClassUtils.getCanonicalName(float.class, "X"));
328 assertEquals("double", ClassUtils.getCanonicalName(double.class, "X"));
329
330
331 assertEquals("boolean[]", ClassUtils.getCanonicalName(boolean[].class, "X"));
332 assertEquals("byte[]", ClassUtils.getCanonicalName(byte[].class, "X"));
333 assertEquals("char[]", ClassUtils.getCanonicalName(char[].class, "X"));
334 assertEquals("short[]", ClassUtils.getCanonicalName(short[].class, "X"));
335 assertEquals("int[]", ClassUtils.getCanonicalName(int[].class, "X"));
336 assertEquals("long[]", ClassUtils.getCanonicalName(long[].class, "X"));
337 assertEquals("float[]", ClassUtils.getCanonicalName(float[].class, "X"));
338 assertEquals("double[]", ClassUtils.getCanonicalName(double[].class, "X"));
339
340
341 assertEquals("java.lang.String[][]", ClassUtils.getCanonicalName(String[][].class, "X"));
342 assertEquals("java.lang.String[][][]", ClassUtils.getCanonicalName(String[][][].class, "X"));
343 assertEquals("java.lang.String[][][][]", ClassUtils.getCanonicalName(String[][][][].class, "X"));
344
345
346 final class Named {
347
348 }
349 assertEquals("X", ClassUtils.getCanonicalName(new Object() {
350
351 }.getClass(), "X"));
352 assertEquals("X", ClassUtils.getCanonicalName(Named.class, "X"));
353 assertEquals("org.apache.commons.lang3.ClassUtilsTest.Inner", ClassUtils.getCanonicalName(Inner.class, "X"));
354 assertEquals("X", ClassUtils.getCanonicalName((Object) null, "X"));
355 assertEquals(OBJECT_CANONICAL_NAME, ClassUtils.getCanonicalName(new Object()));
356 }
357
358 @Test
359 void test_getClass() {
360
361 }
362
363 @Test
364 void test_getName_Class() {
365 assertEquals("org.apache.commons.lang3.ClassUtils", ClassUtils.getName(ClassUtils.class));
366 assertEquals("java.util.Map$Entry", ClassUtils.getName(Map.Entry.class));
367 assertEquals("", ClassUtils.getName((Class<?>) null));
368
369 assertEquals("[Ljava.lang.String;", ClassUtils.getName(String[].class));
370 assertEquals("[Ljava.util.Map$Entry;", ClassUtils.getName(Map.Entry[].class));
371
372
373 assertEquals("boolean", ClassUtils.getName(boolean.class));
374 assertEquals("byte", ClassUtils.getName(byte.class));
375 assertEquals("char", ClassUtils.getName(char.class));
376 assertEquals("short", ClassUtils.getName(short.class));
377 assertEquals("int", ClassUtils.getName(int.class));
378 assertEquals("long", ClassUtils.getName(long.class));
379 assertEquals("float", ClassUtils.getName(float.class));
380 assertEquals("double", ClassUtils.getName(double.class));
381
382
383 assertEquals("[Z", ClassUtils.getName(boolean[].class));
384 assertEquals("[B", ClassUtils.getName(byte[].class));
385 assertEquals("[C", ClassUtils.getName(char[].class));
386 assertEquals("[S", ClassUtils.getName(short[].class));
387 assertEquals("[I", ClassUtils.getName(int[].class));
388 assertEquals("[J", ClassUtils.getName(long[].class));
389 assertEquals("[F", ClassUtils.getName(float[].class));
390 assertEquals("[D", ClassUtils.getName(double[].class));
391
392
393 assertEquals("[[Ljava.lang.String;", ClassUtils.getName(String[][].class));
394 assertEquals("[[[Ljava.lang.String;", ClassUtils.getName(String[][][].class));
395 assertEquals("[[[[Ljava.lang.String;", ClassUtils.getName(String[][][][].class));
396
397
398 final class Named {
399
400 }
401 assertEquals("org.apache.commons.lang3.ClassUtilsTest$3", ClassUtils.getName(new Object() {
402
403 }.getClass()));
404 assertEquals("org.apache.commons.lang3.ClassUtilsTest$3Named", ClassUtils.getName(Named.class));
405 assertEquals("org.apache.commons.lang3.ClassUtilsTest$Inner", ClassUtils.getName(Inner.class));
406 assertEquals(OBJECT_CANONICAL_NAME, ClassUtils.getName(new Object()));
407 }
408
409 @Test
410 void test_getName_Object() {
411 assertEquals("org.apache.commons.lang3.ClassUtils", ClassUtils.getName(new ClassUtils(), "<null>"));
412 assertEquals("org.apache.commons.lang3.ClassUtilsTest$Inner", ClassUtils.getName(new Inner(), "<null>"));
413 assertEquals("java.lang.String", ClassUtils.getName("hello", "<null>"));
414 assertEquals("<null>", ClassUtils.getName(null, "<null>"));
415
416
417 final class Named {
418
419 }
420 assertEquals("org.apache.commons.lang3.ClassUtilsTest$4", ClassUtils.getName(new Object() {
421
422 }, "<null>"));
423 assertEquals("org.apache.commons.lang3.ClassUtilsTest$4Named", ClassUtils.getName(new Named(), "<null>"));
424 assertEquals("org.apache.commons.lang3.ClassUtilsTest$Inner", ClassUtils.getName(new Inner(), "<null>"));
425 }
426
427 @Test
428 void test_getPackageCanonicalName_Class() {
429 assertEquals("org.apache.commons.lang3", ClassUtils.getPackageCanonicalName(ClassUtils.class));
430 assertEquals("org.apache.commons.lang3", ClassUtils.getPackageCanonicalName(ClassUtils[].class));
431 assertEquals("org.apache.commons.lang3", ClassUtils.getPackageCanonicalName(ClassUtils[][].class));
432 assertEquals("", ClassUtils.getPackageCanonicalName(int[].class));
433 assertEquals("", ClassUtils.getPackageCanonicalName(int[][].class));
434
435
436 final class Named {
437
438 }
439 assertEquals("org.apache.commons.lang3", ClassUtils.getPackageCanonicalName(new Object() {
440
441 }.getClass()));
442 assertEquals("org.apache.commons.lang3", ClassUtils.getPackageCanonicalName(Named.class));
443 assertEquals("org.apache.commons.lang3", ClassUtils.getPackageCanonicalName(Inner.class));
444 assertEquals(StringUtils.EMPTY, ClassUtils.getPackageCanonicalName((Class<?>) null));
445 }
446
447 @Test
448 void test_getPackageCanonicalName_Object() {
449 assertEquals("<null>", ClassUtils.getPackageCanonicalName(null, "<null>"));
450 assertEquals("org.apache.commons.lang3", ClassUtils.getPackageCanonicalName(new ClassUtils(), "<null>"));
451 assertEquals("org.apache.commons.lang3", ClassUtils.getPackageCanonicalName(new ClassUtils[0], "<null>"));
452 assertEquals("org.apache.commons.lang3", ClassUtils.getPackageCanonicalName(new ClassUtils[0][0], "<null>"));
453 assertEquals("", ClassUtils.getPackageCanonicalName(new int[0], "<null>"));
454 assertEquals("", ClassUtils.getPackageCanonicalName(new int[0][0], "<null>"));
455
456
457 final class Named {
458
459 }
460 assertEquals("org.apache.commons.lang3", ClassUtils.getPackageCanonicalName(new Object() {
461
462 }, "<null>"));
463 assertEquals("org.apache.commons.lang3", ClassUtils.getPackageCanonicalName(new Named(), "<null>"));
464 assertEquals("org.apache.commons.lang3", ClassUtils.getPackageCanonicalName(new Inner(), "<null>"));
465 }
466
467 @Test
468 void test_getPackageCanonicalName_String() {
469 assertEquals("org.apache.commons.lang3", ClassUtils.getPackageCanonicalName("org.apache.commons.lang3.ClassUtils"));
470 assertEquals("org.apache.commons.lang3", ClassUtils.getPackageCanonicalName("[Lorg.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("org.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("", ClassUtils.getPackageCanonicalName("[I"));
477 assertEquals("", ClassUtils.getPackageCanonicalName("[[I"));
478 assertEquals("", ClassUtils.getPackageCanonicalName("int[]"));
479 assertEquals("", ClassUtils.getPackageCanonicalName("int[][]"));
480
481 assertEquals("org.apache.commons.lang3", ClassUtils.getPackageCanonicalName("org.apache.commons.lang3.ClassUtilsTest$6"));
482 assertEquals("org.apache.commons.lang3", ClassUtils.getPackageCanonicalName("org.apache.commons.lang3.ClassUtilsTest$5Named"));
483 assertEquals("org.apache.commons.lang3", ClassUtils.getPackageCanonicalName("org.apache.commons.lang3.ClassUtilsTest$Inner"));
484 assertEquals("a.b.c.D.e.f", ClassUtils.getPackageCanonicalName("a.b.c.D.e.f.D"));
485 }
486
487 @Test
488 void test_getPackageName_Class() {
489 assertEquals("java.lang", ClassUtils.getPackageName(String.class));
490 assertEquals("java.util", ClassUtils.getPackageName(Map.Entry.class));
491 assertEquals("", ClassUtils.getPackageName((Class<?>) null));
492
493 assertEquals("java.lang", ClassUtils.getPackageName(String[].class));
494
495 assertEquals("", ClassUtils.getPackageName(boolean[].class));
496 assertEquals("", ClassUtils.getPackageName(byte[].class));
497 assertEquals("", ClassUtils.getPackageName(char[].class));
498 assertEquals("", ClassUtils.getPackageName(short[].class));
499 assertEquals("", ClassUtils.getPackageName(int[].class));
500 assertEquals("", ClassUtils.getPackageName(long[].class));
501 assertEquals("", ClassUtils.getPackageName(float[].class));
502 assertEquals("", ClassUtils.getPackageName(double[].class));
503
504 assertEquals("java.lang", ClassUtils.getPackageName(String[][].class));
505 assertEquals("java.lang", ClassUtils.getPackageName(String[][][].class));
506 assertEquals("java.lang", ClassUtils.getPackageName(String[][][][].class));
507
508 final class Named {
509
510 }
511 assertEquals("org.apache.commons.lang3", ClassUtils.getPackageName(new Object() {
512
513 }.getClass()));
514 assertEquals("org.apache.commons.lang3", ClassUtils.getPackageName(Named.class));
515 assertEquals("org.apache.commons.lang3", ClassUtils.getPackageName(new Serializable() {
516 private static final long serialVersionUID = 1L;
517 }.getClass()));
518 assertEquals("java.util.function", ClassUtils.getPackageName(Function.identity().getClass()));
519 }
520
521 @Test
522 void test_getPackageName_Object() {
523 assertEquals("org.apache.commons.lang3", ClassUtils.getPackageName(new ClassUtils(), "<null>"));
524 assertEquals("org.apache.commons.lang3", ClassUtils.getPackageName(new Inner(), "<null>"));
525 assertEquals("<null>", ClassUtils.getPackageName(null, "<null>"));
526 }
527
528 @Test
529 void test_getPackageName_String() {
530 assertEquals("org.apache.commons.lang3", ClassUtils.getPackageName(ClassUtils.class.getName()));
531 assertEquals("java.util", ClassUtils.getPackageName(Map.Entry.class.getName()));
532 assertEquals("", ClassUtils.getPackageName((String) null));
533 assertEquals("", ClassUtils.getPackageName(""));
534 }
535
536 @Test
537 void test_getShortCanonicalName_Class() {
538 assertEquals("ClassUtils", ClassUtils.getShortCanonicalName(ClassUtils.class));
539 assertEquals("ClassUtils[]", ClassUtils.getShortCanonicalName(ClassUtils[].class));
540 assertEquals("ClassUtils[][]", ClassUtils.getShortCanonicalName(ClassUtils[][].class));
541 assertEquals("int[]", ClassUtils.getShortCanonicalName(int[].class));
542 assertEquals("int[][]", ClassUtils.getShortCanonicalName(int[][].class));
543 assertEquals("int[][][][][][][][][][]", ClassUtils.getShortCanonicalName(int[][][][][][][][][][].class));
544
545
546 final class Named {
547
548 }
549 assertEquals("", ClassUtils.getShortCanonicalName(new Object() {
550
551 }.getClass()));
552
553 assertEquals("", ClassUtils.getShortCanonicalName(Named.class));
554 assertEquals("Inner", ClassUtils.getShortCanonicalName(Inner.class));
555 assertEquals(StringUtils.EMPTY, ClassUtils.getShortCanonicalName((Class<?>) null));
556 }
557
558 @Test
559 void test_getShortCanonicalName_Object() {
560 assertEquals("<null>", ClassUtils.getShortCanonicalName(null, "<null>"));
561 assertEquals("ClassUtils", ClassUtils.getShortCanonicalName(new ClassUtils(), "<null>"));
562 assertEquals("ClassUtils[]", ClassUtils.getShortCanonicalName(new ClassUtils[0], "<null>"));
563 assertEquals("ClassUtils[][]", ClassUtils.getShortCanonicalName(new ClassUtils[0][0], "<null>"));
564 assertEquals("int[]", ClassUtils.getShortCanonicalName(new int[0], "<null>"));
565 assertEquals("int[][]", ClassUtils.getShortCanonicalName(new int[0][0], "<null>"));
566 assertEquals("int[][][][][][][][][][]", ClassUtils.getShortCanonicalName(new int[0][0][0][0][0][0][0][0][0][0], "<null>"));
567
568
569 final class Named {
570
571 }
572 assertEquals("", ClassUtils.getShortCanonicalName(new Object() {
573
574 }, "<null>"));
575 assertEquals("", ClassUtils.getShortCanonicalName(new Named(), "<null>"));
576 assertEquals("Inner", ClassUtils.getShortCanonicalName(new Inner(), "<null>"));
577 }
578
579 @Test
580 void test_getShortCanonicalName_String() {
581 assertEquals("", ClassUtils.getShortCanonicalName((String) null));
582 assertEquals("Map.Entry", ClassUtils.getShortCanonicalName(java.util.Map.Entry.class.getName()));
583 assertEquals("Entry", ClassUtils.getShortCanonicalName(java.util.Map.Entry.class.getCanonicalName()));
584 assertEquals("ClassUtils", ClassUtils.getShortCanonicalName("org.apache.commons.lang3.ClassUtils"));
585 assertEquals("ClassUtils[]", ClassUtils.getShortCanonicalName("[Lorg.apache.commons.lang3.ClassUtils;"));
586 assertEquals("ClassUtils[][]", ClassUtils.getShortCanonicalName("[[Lorg.apache.commons.lang3.ClassUtils;"));
587 assertEquals("ClassUtils[]", ClassUtils.getShortCanonicalName("org.apache.commons.lang3.ClassUtils[]"));
588 assertEquals("ClassUtils[][]", ClassUtils.getShortCanonicalName("org.apache.commons.lang3.ClassUtils[][]"));
589 assertEquals("int[]", ClassUtils.getShortCanonicalName("[I"));
590 assertEquals("int[]", ClassUtils.getShortCanonicalName(int[].class.getCanonicalName()));
591 assertEquals("int[]", ClassUtils.getShortCanonicalName(int[].class.getName()));
592 assertEquals("int[][]", ClassUtils.getShortCanonicalName("[[I"));
593 assertEquals("int[]", ClassUtils.getShortCanonicalName("int[]"));
594 assertEquals("int[][]", ClassUtils.getShortCanonicalName("int[][]"));
595 assertEquals("int[][][][][][][][][][][][]", ClassUtils.getShortCanonicalName("int[][][][][][][][][][][][]"));
596
597
598
599 assertEquals("int[]", int[].class.getCanonicalName());
600 assertEquals("[I", int[].class.getName());
601 assertIllegalArgumentException(() -> ClassUtils.getShortCanonicalName(StringUtils.repeat("[", 256) + "I"));
602 assertEquals("int" + StringUtils.repeat("[]", 255), ClassUtils.getShortCanonicalName(StringUtils.repeat("[", 255) + "I"));
603
604
605
606 assertEquals("ClassUtilsTest.6", ClassUtils.getShortCanonicalName("org.apache.commons.lang3.ClassUtilsTest$6"));
607
608 assertEquals("ClassUtilsTest.5Named", ClassUtils.getShortCanonicalName("org.apache.commons.lang3.ClassUtilsTest$5Named"));
609 assertEquals("ClassUtilsTest.Inner", ClassUtils.getShortCanonicalName("org.apache.commons.lang3.ClassUtilsTest$Inner"));
610
611 assertEquals("org.apache.commons.lang3.ClassUtilsTest$11", new org.apache.commons.lang3.ClassUtilsTest() {
612 }.getClass().getName());
613 assertNull(new org.apache.commons.lang3.ClassUtilsTest() {
614 }.getClass().getCanonicalName());
615 assertEquals("String[]", ClassUtils.getShortCanonicalName(String[].class.getName()));
616 assertEquals("String[]", ClassUtils.getShortCanonicalName(String[].class.getCanonicalName()));
617 assertEquals("String[]", ClassUtils.getShortCanonicalName("String[]"));
618
619 assertThrows(IllegalArgumentException.class, () -> ClassUtils.getShortCanonicalName(""));
620 assertThrows(IllegalArgumentException.class, () -> ClassUtils.getShortCanonicalName("["));
621 assertThrows(IllegalArgumentException.class, () -> ClassUtils.getShortCanonicalName("[]"));
622 assertThrows(IllegalArgumentException.class, () -> ClassUtils.getShortCanonicalName("[;"));
623 assertThrows(IllegalArgumentException.class, () -> ClassUtils.getShortCanonicalName("[];"));
624 assertThrows(IllegalArgumentException.class, () -> ClassUtils.getShortCanonicalName(" "));
625 assertThrows(IllegalArgumentException.class, () -> ClassUtils.getShortCanonicalName("[$"));
626 assertThrows(IllegalArgumentException.class, () -> ClassUtils.getShortCanonicalName("[$a"));
627 assertThrows(IllegalArgumentException.class, () -> ClassUtils.getShortCanonicalName("[["));
628 assertThrows(IllegalArgumentException.class, () -> ClassUtils.getShortCanonicalName("[[L"));
629 assertThrows(IllegalArgumentException.class, () -> ClassUtils.getShortCanonicalName("[org.apache.commons.lang3.ClassUtilsTest"));
630 assertThrows(IllegalArgumentException.class, () -> ClassUtils.getShortCanonicalName("[Lorg.apache.commons.lang3.ClassUtilsTest"));
631 }
632
633 @Test
634 void test_getShortClassName_Class() {
635 assertEquals("ClassUtils", ClassUtils.getShortClassName(ClassUtils.class));
636 assertEquals("Map.Entry", ClassUtils.getShortClassName(Map.Entry.class));
637 assertEquals("", ClassUtils.getShortClassName((Class<?>) null));
638
639
640 assertEquals("String[]", ClassUtils.getShortClassName(String[].class));
641 assertEquals("Map.Entry[]", ClassUtils.getShortClassName(Map.Entry[].class));
642
643
644 assertEquals("boolean", ClassUtils.getShortClassName(boolean.class));
645 assertEquals("byte", ClassUtils.getShortClassName(byte.class));
646 assertEquals("char", ClassUtils.getShortClassName(char.class));
647 assertEquals("short", ClassUtils.getShortClassName(short.class));
648 assertEquals("int", ClassUtils.getShortClassName(int.class));
649 assertEquals("long", ClassUtils.getShortClassName(long.class));
650 assertEquals("float", ClassUtils.getShortClassName(float.class));
651 assertEquals("double", ClassUtils.getShortClassName(double.class));
652
653
654 assertEquals("boolean[]", ClassUtils.getShortClassName(boolean[].class));
655 assertEquals("byte[]", ClassUtils.getShortClassName(byte[].class));
656 assertEquals("char[]", ClassUtils.getShortClassName(char[].class));
657 assertEquals("short[]", ClassUtils.getShortClassName(short[].class));
658 assertEquals("int[]", ClassUtils.getShortClassName(int[].class));
659 assertEquals("long[]", ClassUtils.getShortClassName(long[].class));
660 assertEquals("float[]", ClassUtils.getShortClassName(float[].class));
661 assertEquals("double[]", ClassUtils.getShortClassName(double[].class));
662
663
664 assertEquals("String[][]", ClassUtils.getShortClassName(String[][].class));
665 assertEquals("String[][][]", ClassUtils.getShortClassName(String[][][].class));
666 assertEquals("String[][][][]", ClassUtils.getShortClassName(String[][][][].class));
667
668
669 final class Named {
670
671 }
672
673 assertEquals("ClassUtilsTest.13", ClassUtils.getShortClassName(new Object() {
674
675 }.getClass()));
676
677 assertEquals("ClassUtilsTest.10Named", ClassUtils.getShortClassName(Named.class));
678 assertEquals("ClassUtilsTest.Inner", ClassUtils.getShortClassName(Inner.class));
679 }
680
681 @Test
682 void test_getShortClassName_Object() {
683 assertEquals("ClassUtils", ClassUtils.getShortClassName(new ClassUtils(), "<null>"));
684 assertEquals("ClassUtilsTest.Inner", ClassUtils.getShortClassName(new Inner(), "<null>"));
685 assertEquals("String", ClassUtils.getShortClassName("hello", "<null>"));
686 assertEquals("<null>", ClassUtils.getShortClassName(null, "<null>"));
687
688
689 final class Named {
690
691 }
692
693 assertEquals("ClassUtilsTest.14", ClassUtils.getShortClassName(new Object() {
694
695 }, "<null>"));
696
697 assertEquals("ClassUtilsTest.11Named", ClassUtils.getShortClassName(new Named(), "<null>"));
698 assertEquals("ClassUtilsTest.Inner", ClassUtils.getShortClassName(new Inner(), "<null>"));
699 }
700
701 @Test
702 void test_getShortClassName_String() {
703 assertEquals("ClassUtils", ClassUtils.getShortClassName(ClassUtils.class.getName()));
704 assertEquals("Map.Entry", ClassUtils.getShortClassName(Map.Entry.class.getName()));
705 assertEquals("", ClassUtils.getShortClassName((String) null));
706 assertEquals("", ClassUtils.getShortClassName(""));
707 }
708
709 @Test
710 void test_getSimpleName_Class() {
711 assertEquals("ClassUtils", ClassUtils.getSimpleName(ClassUtils.class));
712 assertEquals("Entry", ClassUtils.getSimpleName(Map.Entry.class));
713 assertEquals("", ClassUtils.getSimpleName(null));
714
715
716 assertEquals("String[]", ClassUtils.getSimpleName(String[].class));
717 assertEquals("Entry[]", ClassUtils.getSimpleName(Map.Entry[].class));
718
719
720 assertEquals("boolean", ClassUtils.getSimpleName(boolean.class));
721 assertEquals("byte", ClassUtils.getSimpleName(byte.class));
722 assertEquals("char", ClassUtils.getSimpleName(char.class));
723 assertEquals("short", ClassUtils.getSimpleName(short.class));
724 assertEquals("int", ClassUtils.getSimpleName(int.class));
725 assertEquals("long", ClassUtils.getSimpleName(long.class));
726 assertEquals("float", ClassUtils.getSimpleName(float.class));
727 assertEquals("double", ClassUtils.getSimpleName(double.class));
728
729
730 assertEquals("boolean[]", ClassUtils.getSimpleName(boolean[].class));
731 assertEquals("byte[]", ClassUtils.getSimpleName(byte[].class));
732 assertEquals("char[]", ClassUtils.getSimpleName(char[].class));
733 assertEquals("short[]", ClassUtils.getSimpleName(short[].class));
734 assertEquals("int[]", ClassUtils.getSimpleName(int[].class));
735 assertEquals("long[]", ClassUtils.getSimpleName(long[].class));
736 assertEquals("float[]", ClassUtils.getSimpleName(float[].class));
737 assertEquals("double[]", ClassUtils.getSimpleName(double[].class));
738
739
740 assertEquals("String[][]", ClassUtils.getSimpleName(String[][].class));
741 assertEquals("String[][][]", ClassUtils.getSimpleName(String[][][].class));
742 assertEquals("String[][][][]", ClassUtils.getSimpleName(String[][][][].class));
743
744
745 final class Named {
746
747 }
748 assertEquals("", ClassUtils.getSimpleName(new Object() {
749
750 }.getClass()));
751 assertEquals("Named", ClassUtils.getSimpleName(Named.class));
752 }
753
754 @Test
755 void test_getSimpleName_Object() {
756 assertEquals("ClassUtils", ClassUtils.getSimpleName(new ClassUtils()));
757 assertEquals("Inner", ClassUtils.getSimpleName(new Inner()));
758 assertEquals("String", ClassUtils.getSimpleName("hello"));
759 assertEquals(StringUtils.EMPTY, ClassUtils.getSimpleName(null));
760 assertEquals(StringUtils.EMPTY, ClassUtils.getSimpleName(null));
761 }
762
763 @Test
764 void test_getSimpleName_Object_String() {
765 assertEquals("ClassUtils", ClassUtils.getSimpleName(new ClassUtils(), "<null>"));
766 assertEquals("Inner", ClassUtils.getSimpleName(new Inner(), "<null>"));
767 assertEquals("String", ClassUtils.getSimpleName("hello", "<null>"));
768 assertEquals("<null>", ClassUtils.getSimpleName(null, "<null>"));
769 assertNull(ClassUtils.getSimpleName(null, null));
770 }
771
772 @Test
773 void test_isAssignable() {
774 assertFalse(ClassUtils.isAssignable((Class<?>) null, null));
775 assertFalse(ClassUtils.isAssignable(String.class, null));
776
777 assertTrue(ClassUtils.isAssignable(null, Object.class));
778 assertTrue(ClassUtils.isAssignable(null, Integer.class));
779 assertFalse(ClassUtils.isAssignable(null, Integer.TYPE));
780 assertTrue(ClassUtils.isAssignable(String.class, Object.class));
781 assertTrue(ClassUtils.isAssignable(String.class, String.class));
782 assertFalse(ClassUtils.isAssignable(Object.class, String.class));
783
784 assertTrue(ClassUtils.isAssignable(Integer.TYPE, Integer.class));
785 assertTrue(ClassUtils.isAssignable(Integer.TYPE, Object.class));
786 assertTrue(ClassUtils.isAssignable(Integer.class, Integer.TYPE));
787 assertTrue(ClassUtils.isAssignable(Integer.class, Object.class));
788 assertTrue(ClassUtils.isAssignable(Integer.TYPE, Integer.TYPE));
789 assertTrue(ClassUtils.isAssignable(Integer.class, Integer.class));
790 assertTrue(ClassUtils.isAssignable(Boolean.TYPE, Boolean.class));
791 assertTrue(ClassUtils.isAssignable(Boolean.TYPE, Object.class));
792 assertTrue(ClassUtils.isAssignable(Boolean.class, Boolean.TYPE));
793 assertTrue(ClassUtils.isAssignable(Boolean.class, Object.class));
794 assertTrue(ClassUtils.isAssignable(Boolean.TYPE, Boolean.TYPE));
795 assertTrue(ClassUtils.isAssignable(Boolean.class, Boolean.class));
796 }
797
798 @Test
799 void test_isAssignable_Autoboxing() {
800 assertFalse(ClassUtils.isAssignable((Class<?>) null, null, true));
801 assertFalse(ClassUtils.isAssignable(String.class, null, true));
802 assertTrue(ClassUtils.isAssignable(null, Object.class, true));
803 assertTrue(ClassUtils.isAssignable(null, Integer.class, true));
804 assertFalse(ClassUtils.isAssignable(null, Integer.TYPE, true));
805 assertTrue(ClassUtils.isAssignable(String.class, Object.class, true));
806 assertTrue(ClassUtils.isAssignable(String.class, String.class, true));
807 assertFalse(ClassUtils.isAssignable(Object.class, String.class, true));
808 assertTrue(ClassUtils.isAssignable(Integer.TYPE, Integer.class, true));
809 assertTrue(ClassUtils.isAssignable(Integer.TYPE, Object.class, true));
810 assertTrue(ClassUtils.isAssignable(Integer.class, Integer.TYPE, true));
811 assertTrue(ClassUtils.isAssignable(Integer.class, Object.class, true));
812 assertTrue(ClassUtils.isAssignable(Integer.TYPE, Integer.TYPE, true));
813 assertTrue(ClassUtils.isAssignable(Integer.class, Integer.class, true));
814 assertTrue(ClassUtils.isAssignable(Boolean.TYPE, Boolean.class, true));
815 assertTrue(ClassUtils.isAssignable(Boolean.class, Boolean.TYPE, true));
816 assertTrue(ClassUtils.isAssignable(Boolean.class, Object.class, true));
817 assertTrue(ClassUtils.isAssignable(Boolean.TYPE, Boolean.TYPE, true));
818 assertTrue(ClassUtils.isAssignable(Boolean.class, Boolean.class, true));
819 }
820
821 @Test
822 void test_isAssignable_ClassArray_ClassArray() {
823 final Class<?>[] array2 = new Class[] {Object.class, Object.class};
824 final Class<?>[] array1 = new Class[] {Object.class};
825 final Class<?>[] array1s = new Class[] {String.class};
826 final Class<?>[] array0 = new Class[] {};
827 final Class<?>[] arrayPrimitives = {Integer.TYPE, Boolean.TYPE};
828 final Class<?>[] arrayWrappers = {Integer.class, Boolean.class};
829
830 assertFalse(ClassUtils.isAssignable(array1, array2));
831 assertFalse(ClassUtils.isAssignable(null, array2));
832 assertTrue(ClassUtils.isAssignable(null, array0));
833 assertTrue(ClassUtils.isAssignable(array0, array0));
834 assertTrue(ClassUtils.isAssignable(array0, (Class<?>[]) null));
835 assertTrue(ClassUtils.isAssignable(null, (Class<?>[]) null));
836
837 assertFalse(ClassUtils.isAssignable(array1, array1s));
838 assertTrue(ClassUtils.isAssignable(array1s, array1s));
839 assertTrue(ClassUtils.isAssignable(array1s, array1));
840
841 assertTrue(ClassUtils.isAssignable(arrayPrimitives, arrayWrappers));
842 assertTrue(ClassUtils.isAssignable(arrayWrappers, arrayPrimitives));
843 assertFalse(ClassUtils.isAssignable(arrayPrimitives, array1));
844 assertFalse(ClassUtils.isAssignable(arrayWrappers, array1));
845 assertTrue(ClassUtils.isAssignable(arrayPrimitives, array2));
846 assertTrue(ClassUtils.isAssignable(arrayWrappers, array2));
847 }
848
849 @Test
850 void test_isAssignable_ClassArray_ClassArray_Autoboxing() {
851 final Class<?>[] array2 = new Class[] {Object.class, Object.class};
852 final Class<?>[] array1 = new Class[] {Object.class};
853 final Class<?>[] array1s = new Class[] {String.class};
854 final Class<?>[] array0 = new Class[] {};
855 final Class<?>[] arrayPrimitives = {Integer.TYPE, Boolean.TYPE};
856 final Class<?>[] arrayWrappers = {Integer.class, Boolean.class};
857
858 assertFalse(ClassUtils.isAssignable(array1, array2, true));
859 assertFalse(ClassUtils.isAssignable(null, array2, true));
860 assertTrue(ClassUtils.isAssignable(null, array0, true));
861 assertTrue(ClassUtils.isAssignable(array0, array0, true));
862 assertTrue(ClassUtils.isAssignable(array0, null, true));
863 assertTrue(ClassUtils.isAssignable((Class[]) null, null, true));
864
865 assertFalse(ClassUtils.isAssignable(array1, array1s, true));
866 assertTrue(ClassUtils.isAssignable(array1s, array1s, true));
867 assertTrue(ClassUtils.isAssignable(array1s, array1, true));
868
869 assertTrue(ClassUtils.isAssignable(arrayPrimitives, arrayWrappers, true));
870 assertTrue(ClassUtils.isAssignable(arrayWrappers, arrayPrimitives, true));
871 assertFalse(ClassUtils.isAssignable(arrayPrimitives, array1, true));
872 assertFalse(ClassUtils.isAssignable(arrayWrappers, array1, true));
873 assertTrue(ClassUtils.isAssignable(arrayPrimitives, array2, true));
874 assertTrue(ClassUtils.isAssignable(arrayWrappers, array2, true));
875 }
876
877 @Test
878 void test_isAssignable_ClassArray_ClassArray_NoAutoboxing() {
879 final Class<?>[] array2 = new Class[] {Object.class, Object.class};
880 final Class<?>[] array1 = new Class[] {Object.class};
881 final Class<?>[] array1s = new Class[] {String.class};
882 final Class<?>[] array0 = new Class[] {};
883 final Class<?>[] arrayPrimitives = {Integer.TYPE, Boolean.TYPE};
884 final Class<?>[] arrayWrappers = {Integer.class, Boolean.class};
885
886 assertFalse(ClassUtils.isAssignable(array1, array2, false));
887 assertFalse(ClassUtils.isAssignable(null, array2, false));
888 assertTrue(ClassUtils.isAssignable(null, array0, false));
889 assertTrue(ClassUtils.isAssignable(array0, array0, false));
890 assertTrue(ClassUtils.isAssignable(array0, null, false));
891 assertTrue(ClassUtils.isAssignable((Class[]) null, null, false));
892
893 assertFalse(ClassUtils.isAssignable(array1, array1s, false));
894 assertTrue(ClassUtils.isAssignable(array1s, array1s, false));
895 assertTrue(ClassUtils.isAssignable(array1s, array1, false));
896
897 assertFalse(ClassUtils.isAssignable(arrayPrimitives, arrayWrappers, false));
898 assertFalse(ClassUtils.isAssignable(arrayWrappers, arrayPrimitives, false));
899 assertFalse(ClassUtils.isAssignable(arrayPrimitives, array1, false));
900 assertFalse(ClassUtils.isAssignable(arrayWrappers, array1, false));
901 assertTrue(ClassUtils.isAssignable(arrayWrappers, array2, false));
902 assertFalse(ClassUtils.isAssignable(arrayPrimitives, array2, false));
903 }
904
905 @Test
906 void test_isAssignable_DefaultUnboxing_Widening() {
907
908 assertFalse(ClassUtils.isAssignable(Byte.class, Character.TYPE), "byte -> char");
909 assertTrue(ClassUtils.isAssignable(Byte.class, Byte.TYPE), "byte -> byte");
910 assertTrue(ClassUtils.isAssignable(Byte.class, Short.TYPE), "byte -> short");
911 assertTrue(ClassUtils.isAssignable(Byte.class, Integer.TYPE), "byte -> int");
912 assertTrue(ClassUtils.isAssignable(Byte.class, Long.TYPE), "byte -> long");
913 assertTrue(ClassUtils.isAssignable(Byte.class, Float.TYPE), "byte -> float");
914 assertTrue(ClassUtils.isAssignable(Byte.class, Double.TYPE), "byte -> double");
915 assertFalse(ClassUtils.isAssignable(Byte.class, Boolean.TYPE), "byte -> boolean");
916
917
918 assertFalse(ClassUtils.isAssignable(Short.class, Character.TYPE), "short -> char");
919 assertFalse(ClassUtils.isAssignable(Short.class, Byte.TYPE), "short -> byte");
920 assertTrue(ClassUtils.isAssignable(Short.class, Short.TYPE), "short -> short");
921 assertTrue(ClassUtils.isAssignable(Short.class, Integer.TYPE), "short -> int");
922 assertTrue(ClassUtils.isAssignable(Short.class, Long.TYPE), "short -> long");
923 assertTrue(ClassUtils.isAssignable(Short.class, Float.TYPE), "short -> float");
924 assertTrue(ClassUtils.isAssignable(Short.class, Double.TYPE), "short -> double");
925 assertFalse(ClassUtils.isAssignable(Short.class, Boolean.TYPE), "short -> boolean");
926
927
928 assertTrue(ClassUtils.isAssignable(Character.class, Character.TYPE), "char -> char");
929 assertFalse(ClassUtils.isAssignable(Character.class, Byte.TYPE), "char -> byte");
930 assertFalse(ClassUtils.isAssignable(Character.class, Short.TYPE), "char -> short");
931 assertTrue(ClassUtils.isAssignable(Character.class, Integer.TYPE), "char -> int");
932 assertTrue(ClassUtils.isAssignable(Character.class, Long.TYPE), "char -> long");
933 assertTrue(ClassUtils.isAssignable(Character.class, Float.TYPE), "char -> float");
934 assertTrue(ClassUtils.isAssignable(Character.class, Double.TYPE), "char -> double");
935 assertFalse(ClassUtils.isAssignable(Character.class, Boolean.TYPE), "char -> boolean");
936
937
938 assertFalse(ClassUtils.isAssignable(Integer.class, Character.TYPE), "int -> char");
939 assertFalse(ClassUtils.isAssignable(Integer.class, Byte.TYPE), "int -> byte");
940 assertFalse(ClassUtils.isAssignable(Integer.class, Short.TYPE), "int -> short");
941 assertTrue(ClassUtils.isAssignable(Integer.class, Integer.TYPE), "int -> int");
942 assertTrue(ClassUtils.isAssignable(Integer.class, Long.TYPE), "int -> long");
943 assertTrue(ClassUtils.isAssignable(Integer.class, Float.TYPE), "int -> float");
944 assertTrue(ClassUtils.isAssignable(Integer.class, Double.TYPE), "int -> double");
945 assertFalse(ClassUtils.isAssignable(Integer.class, Boolean.TYPE), "int -> boolean");
946
947
948 assertFalse(ClassUtils.isAssignable(Long.class, Character.TYPE), "long -> char");
949 assertFalse(ClassUtils.isAssignable(Long.class, Byte.TYPE), "long -> byte");
950 assertFalse(ClassUtils.isAssignable(Long.class, Short.TYPE), "long -> short");
951 assertFalse(ClassUtils.isAssignable(Long.class, Integer.TYPE), "long -> int");
952 assertTrue(ClassUtils.isAssignable(Long.class, Long.TYPE), "long -> long");
953 assertTrue(ClassUtils.isAssignable(Long.class, Float.TYPE), "long -> float");
954 assertTrue(ClassUtils.isAssignable(Long.class, Double.TYPE), "long -> double");
955 assertFalse(ClassUtils.isAssignable(Long.class, Boolean.TYPE), "long -> boolean");
956
957
958 assertFalse(ClassUtils.isAssignable(Float.class, Character.TYPE), "float -> char");
959 assertFalse(ClassUtils.isAssignable(Float.class, Byte.TYPE), "float -> byte");
960 assertFalse(ClassUtils.isAssignable(Float.class, Short.TYPE), "float -> short");
961 assertFalse(ClassUtils.isAssignable(Float.class, Integer.TYPE), "float -> int");
962 assertFalse(ClassUtils.isAssignable(Float.class, Long.TYPE), "float -> long");
963 assertTrue(ClassUtils.isAssignable(Float.class, Float.TYPE), "float -> float");
964 assertTrue(ClassUtils.isAssignable(Float.class, Double.TYPE), "float -> double");
965 assertFalse(ClassUtils.isAssignable(Float.class, Boolean.TYPE), "float -> boolean");
966
967
968 assertFalse(ClassUtils.isAssignable(Double.class, Character.TYPE), "double -> char");
969 assertFalse(ClassUtils.isAssignable(Double.class, Byte.TYPE), "double -> byte");
970 assertFalse(ClassUtils.isAssignable(Double.class, Short.TYPE), "double -> short");
971 assertFalse(ClassUtils.isAssignable(Double.class, Integer.TYPE), "double -> int");
972 assertFalse(ClassUtils.isAssignable(Double.class, Long.TYPE), "double -> long");
973 assertFalse(ClassUtils.isAssignable(Double.class, Float.TYPE), "double -> float");
974 assertTrue(ClassUtils.isAssignable(Double.class, Double.TYPE), "double -> double");
975 assertFalse(ClassUtils.isAssignable(Double.class, Boolean.TYPE), "double -> boolean");
976
977
978 assertFalse(ClassUtils.isAssignable(Boolean.class, Character.TYPE), "boolean -> char");
979 assertFalse(ClassUtils.isAssignable(Boolean.class, Byte.TYPE), "boolean -> byte");
980 assertFalse(ClassUtils.isAssignable(Boolean.class, Short.TYPE), "boolean -> short");
981 assertFalse(ClassUtils.isAssignable(Boolean.class, Integer.TYPE), "boolean -> int");
982 assertFalse(ClassUtils.isAssignable(Boolean.class, Long.TYPE), "boolean -> long");
983 assertFalse(ClassUtils.isAssignable(Boolean.class, Float.TYPE), "boolean -> float");
984 assertFalse(ClassUtils.isAssignable(Boolean.class, Double.TYPE), "boolean -> double");
985 assertTrue(ClassUtils.isAssignable(Boolean.class, Boolean.TYPE), "boolean -> boolean");
986 }
987
988 @Test
989 void test_isAssignable_NoAutoboxing() {
990 assertFalse(ClassUtils.isAssignable((Class<?>) null, null, false));
991 assertFalse(ClassUtils.isAssignable(String.class, null, false));
992 assertTrue(ClassUtils.isAssignable(null, Object.class, false));
993 assertTrue(ClassUtils.isAssignable(null, Integer.class, false));
994 assertFalse(ClassUtils.isAssignable(null, Integer.TYPE, false));
995 assertTrue(ClassUtils.isAssignable(String.class, Object.class, false));
996 assertTrue(ClassUtils.isAssignable(String.class, String.class, false));
997 assertFalse(ClassUtils.isAssignable(Object.class, String.class, false));
998 assertFalse(ClassUtils.isAssignable(Integer.TYPE, Integer.class, false));
999 assertFalse(ClassUtils.isAssignable(Integer.TYPE, Object.class, false));
1000 assertFalse(ClassUtils.isAssignable(Integer.class, Integer.TYPE, false));
1001 assertTrue(ClassUtils.isAssignable(Integer.TYPE, Integer.TYPE, false));
1002 assertTrue(ClassUtils.isAssignable(Integer.class, Integer.class, false));
1003 assertFalse(ClassUtils.isAssignable(Boolean.TYPE, Boolean.class, false));
1004 assertFalse(ClassUtils.isAssignable(Boolean.TYPE, Object.class, false));
1005 assertFalse(ClassUtils.isAssignable(Boolean.class, Boolean.TYPE, false));
1006 assertTrue(ClassUtils.isAssignable(Boolean.class, Object.class, false));
1007 assertTrue(ClassUtils.isAssignable(Boolean.TYPE, Boolean.TYPE, false));
1008 assertTrue(ClassUtils.isAssignable(Boolean.class, Boolean.class, false));
1009 }
1010
1011 @Test
1012 void test_isAssignable_Unboxing_Widening() {
1013
1014 assertFalse(ClassUtils.isAssignable(Byte.class, Character.TYPE, true), "byte -> char");
1015 assertTrue(ClassUtils.isAssignable(Byte.class, Byte.TYPE, true), "byte -> byte");
1016 assertTrue(ClassUtils.isAssignable(Byte.class, Short.TYPE, true), "byte -> short");
1017 assertTrue(ClassUtils.isAssignable(Byte.class, Integer.TYPE, true), "byte -> int");
1018 assertTrue(ClassUtils.isAssignable(Byte.class, Long.TYPE, true), "byte -> long");
1019 assertTrue(ClassUtils.isAssignable(Byte.class, Float.TYPE, true), "byte -> float");
1020 assertTrue(ClassUtils.isAssignable(Byte.class, Double.TYPE, true), "byte -> double");
1021 assertFalse(ClassUtils.isAssignable(Byte.class, Boolean.TYPE, true), "byte -> boolean");
1022
1023 assertFalse(ClassUtils.isAssignable(Short.class, Character.TYPE, true), "short -> char");
1024 assertFalse(ClassUtils.isAssignable(Short.class, Byte.TYPE, true), "short -> byte");
1025 assertTrue(ClassUtils.isAssignable(Short.class, Short.TYPE, true), "short -> short");
1026 assertTrue(ClassUtils.isAssignable(Short.class, Integer.TYPE, true), "short -> int");
1027 assertTrue(ClassUtils.isAssignable(Short.class, Long.TYPE, true), "short -> long");
1028 assertTrue(ClassUtils.isAssignable(Short.class, Float.TYPE, true), "short -> float");
1029 assertTrue(ClassUtils.isAssignable(Short.class, Double.TYPE, true), "short -> double");
1030 assertFalse(ClassUtils.isAssignable(Short.class, Boolean.TYPE, true), "short -> boolean");
1031
1032 assertTrue(ClassUtils.isAssignable(Character.class, Character.TYPE, true), "char -> char");
1033 assertFalse(ClassUtils.isAssignable(Character.class, Byte.TYPE, true), "char -> byte");
1034 assertFalse(ClassUtils.isAssignable(Character.class, Short.TYPE, true), "char -> short");
1035 assertTrue(ClassUtils.isAssignable(Character.class, Integer.TYPE, true), "char -> int");
1036 assertTrue(ClassUtils.isAssignable(Character.class, Long.TYPE, true), "char -> long");
1037 assertTrue(ClassUtils.isAssignable(Character.class, Float.TYPE, true), "char -> float");
1038 assertTrue(ClassUtils.isAssignable(Character.class, Double.TYPE, true), "char -> double");
1039 assertFalse(ClassUtils.isAssignable(Character.class, Boolean.TYPE, true), "char -> boolean");
1040
1041 assertFalse(ClassUtils.isAssignable(Integer.class, Character.TYPE, true), "int -> char");
1042 assertFalse(ClassUtils.isAssignable(Integer.class, Byte.TYPE, true), "int -> byte");
1043 assertFalse(ClassUtils.isAssignable(Integer.class, Short.TYPE, true), "int -> short");
1044 assertTrue(ClassUtils.isAssignable(Integer.class, Integer.TYPE, true), "int -> int");
1045 assertTrue(ClassUtils.isAssignable(Integer.class, Long.TYPE, true), "int -> long");
1046 assertTrue(ClassUtils.isAssignable(Integer.class, Float.TYPE, true), "int -> float");
1047 assertTrue(ClassUtils.isAssignable(Integer.class, Double.TYPE, true), "int -> double");
1048 assertFalse(ClassUtils.isAssignable(Integer.class, Boolean.TYPE, true), "int -> boolean");
1049
1050 assertFalse(ClassUtils.isAssignable(Long.class, Character.TYPE, true), "long -> char");
1051 assertFalse(ClassUtils.isAssignable(Long.class, Byte.TYPE, true), "long -> byte");
1052 assertFalse(ClassUtils.isAssignable(Long.class, Short.TYPE, true), "long -> short");
1053 assertFalse(ClassUtils.isAssignable(Long.class, Integer.TYPE, true), "long -> int");
1054 assertTrue(ClassUtils.isAssignable(Long.class, Long.TYPE, true), "long -> long");
1055 assertTrue(ClassUtils.isAssignable(Long.class, Float.TYPE, true), "long -> float");
1056 assertTrue(ClassUtils.isAssignable(Long.class, Double.TYPE, true), "long -> double");
1057 assertFalse(ClassUtils.isAssignable(Long.class, Boolean.TYPE, true), "long -> boolean");
1058
1059 assertFalse(ClassUtils.isAssignable(Float.class, Character.TYPE, true), "float -> char");
1060 assertFalse(ClassUtils.isAssignable(Float.class, Byte.TYPE, true), "float -> byte");
1061 assertFalse(ClassUtils.isAssignable(Float.class, Short.TYPE, true), "float -> short");
1062 assertFalse(ClassUtils.isAssignable(Float.class, Integer.TYPE, true), "float -> int");
1063 assertFalse(ClassUtils.isAssignable(Float.class, Long.TYPE, true), "float -> long");
1064 assertTrue(ClassUtils.isAssignable(Float.class, Float.TYPE, true), "float -> float");
1065 assertTrue(ClassUtils.isAssignable(Float.class, Double.TYPE, true), "float -> double");
1066 assertFalse(ClassUtils.isAssignable(Float.class, Boolean.TYPE, true), "float -> boolean");
1067
1068 assertFalse(ClassUtils.isAssignable(Double.class, Character.TYPE, true), "double -> char");
1069 assertFalse(ClassUtils.isAssignable(Double.class, Byte.TYPE, true), "double -> byte");
1070 assertFalse(ClassUtils.isAssignable(Double.class, Short.TYPE, true), "double -> short");
1071 assertFalse(ClassUtils.isAssignable(Double.class, Integer.TYPE, true), "double -> int");
1072 assertFalse(ClassUtils.isAssignable(Double.class, Long.TYPE, true), "double -> long");
1073 assertFalse(ClassUtils.isAssignable(Double.class, Float.TYPE, true), "double -> float");
1074 assertTrue(ClassUtils.isAssignable(Double.class, Double.TYPE, true), "double -> double");
1075 assertFalse(ClassUtils.isAssignable(Double.class, Boolean.TYPE, true), "double -> boolean");
1076
1077 assertFalse(ClassUtils.isAssignable(Boolean.class, Character.TYPE, true), "boolean -> char");
1078 assertFalse(ClassUtils.isAssignable(Boolean.class, Byte.TYPE, true), "boolean -> byte");
1079 assertFalse(ClassUtils.isAssignable(Boolean.class, Short.TYPE, true), "boolean -> short");
1080 assertFalse(ClassUtils.isAssignable(Boolean.class, Integer.TYPE, true), "boolean -> int");
1081 assertFalse(ClassUtils.isAssignable(Boolean.class, Long.TYPE, true), "boolean -> long");
1082 assertFalse(ClassUtils.isAssignable(Boolean.class, Float.TYPE, true), "boolean -> float");
1083 assertFalse(ClassUtils.isAssignable(Boolean.class, Double.TYPE, true), "boolean -> double");
1084 assertTrue(ClassUtils.isAssignable(Boolean.class, Boolean.TYPE, true), "boolean -> boolean");
1085 }
1086
1087 @Test
1088 void test_isAssignable_Widening() {
1089
1090 assertFalse(ClassUtils.isAssignable(Byte.TYPE, Character.TYPE), "byte -> char");
1091 assertTrue(ClassUtils.isAssignable(Byte.TYPE, Byte.TYPE), "byte -> byte");
1092 assertTrue(ClassUtils.isAssignable(Byte.TYPE, Short.TYPE), "byte -> short");
1093 assertTrue(ClassUtils.isAssignable(Byte.TYPE, Integer.TYPE), "byte -> int");
1094 assertTrue(ClassUtils.isAssignable(Byte.TYPE, Long.TYPE), "byte -> long");
1095 assertTrue(ClassUtils.isAssignable(Byte.TYPE, Float.TYPE), "byte -> float");
1096 assertTrue(ClassUtils.isAssignable(Byte.TYPE, Double.TYPE), "byte -> double");
1097 assertFalse(ClassUtils.isAssignable(Byte.TYPE, Boolean.TYPE), "byte -> boolean");
1098
1099 assertFalse(ClassUtils.isAssignable(Short.TYPE, Character.TYPE), "short -> char");
1100 assertFalse(ClassUtils.isAssignable(Short.TYPE, Byte.TYPE), "short -> byte");
1101 assertTrue(ClassUtils.isAssignable(Short.TYPE, Short.TYPE), "short -> short");
1102 assertTrue(ClassUtils.isAssignable(Short.TYPE, Integer.TYPE), "short -> int");
1103 assertTrue(ClassUtils.isAssignable(Short.TYPE, Long.TYPE), "short -> long");
1104 assertTrue(ClassUtils.isAssignable(Short.TYPE, Float.TYPE), "short -> float");
1105 assertTrue(ClassUtils.isAssignable(Short.TYPE, Double.TYPE), "short -> double");
1106 assertFalse(ClassUtils.isAssignable(Short.TYPE, Boolean.TYPE), "short -> boolean");
1107
1108 assertTrue(ClassUtils.isAssignable(Character.TYPE, Character.TYPE), "char -> char");
1109 assertFalse(ClassUtils.isAssignable(Character.TYPE, Byte.TYPE), "char -> byte");
1110 assertFalse(ClassUtils.isAssignable(Character.TYPE, Short.TYPE), "char -> short");
1111 assertTrue(ClassUtils.isAssignable(Character.TYPE, Integer.TYPE), "char -> int");
1112 assertTrue(ClassUtils.isAssignable(Character.TYPE, Long.TYPE), "char -> long");
1113 assertTrue(ClassUtils.isAssignable(Character.TYPE, Float.TYPE), "char -> float");
1114 assertTrue(ClassUtils.isAssignable(Character.TYPE, Double.TYPE), "char -> double");
1115 assertFalse(ClassUtils.isAssignable(Character.TYPE, Boolean.TYPE), "char -> boolean");
1116
1117 assertFalse(ClassUtils.isAssignable(Integer.TYPE, Character.TYPE), "int -> char");
1118 assertFalse(ClassUtils.isAssignable(Integer.TYPE, Byte.TYPE), "int -> byte");
1119 assertFalse(ClassUtils.isAssignable(Integer.TYPE, Short.TYPE), "int -> short");
1120 assertTrue(ClassUtils.isAssignable(Integer.TYPE, Integer.TYPE), "int -> int");
1121 assertTrue(ClassUtils.isAssignable(Integer.TYPE, Long.TYPE), "int -> long");
1122 assertTrue(ClassUtils.isAssignable(Integer.TYPE, Float.TYPE), "int -> float");
1123 assertTrue(ClassUtils.isAssignable(Integer.TYPE, Double.TYPE), "int -> double");
1124 assertFalse(ClassUtils.isAssignable(Integer.TYPE, Boolean.TYPE), "int -> boolean");
1125
1126 assertFalse(ClassUtils.isAssignable(Long.TYPE, Character.TYPE), "long -> char");
1127 assertFalse(ClassUtils.isAssignable(Long.TYPE, Byte.TYPE), "long -> byte");
1128 assertFalse(ClassUtils.isAssignable(Long.TYPE, Short.TYPE), "long -> short");
1129 assertFalse(ClassUtils.isAssignable(Long.TYPE, Integer.TYPE), "long -> int");
1130 assertTrue(ClassUtils.isAssignable(Long.TYPE, Long.TYPE), "long -> long");
1131 assertTrue(ClassUtils.isAssignable(Long.TYPE, Float.TYPE), "long -> float");
1132 assertTrue(ClassUtils.isAssignable(Long.TYPE, Double.TYPE), "long -> double");
1133 assertFalse(ClassUtils.isAssignable(Long.TYPE, Boolean.TYPE), "long -> boolean");
1134
1135 assertFalse(ClassUtils.isAssignable(Float.TYPE, Character.TYPE), "float -> char");
1136 assertFalse(ClassUtils.isAssignable(Float.TYPE, Byte.TYPE), "float -> byte");
1137 assertFalse(ClassUtils.isAssignable(Float.TYPE, Short.TYPE), "float -> short");
1138 assertFalse(ClassUtils.isAssignable(Float.TYPE, Integer.TYPE), "float -> int");
1139 assertFalse(ClassUtils.isAssignable(Float.TYPE, Long.TYPE), "float -> long");
1140 assertTrue(ClassUtils.isAssignable(Float.TYPE, Float.TYPE), "float -> float");
1141 assertTrue(ClassUtils.isAssignable(Float.TYPE, Double.TYPE), "float -> double");
1142 assertFalse(ClassUtils.isAssignable(Float.TYPE, Boolean.TYPE), "float -> boolean");
1143
1144 assertFalse(ClassUtils.isAssignable(Double.TYPE, Character.TYPE), "double -> char");
1145 assertFalse(ClassUtils.isAssignable(Double.TYPE, Byte.TYPE), "double -> byte");
1146 assertFalse(ClassUtils.isAssignable(Double.TYPE, Short.TYPE), "double -> short");
1147 assertFalse(ClassUtils.isAssignable(Double.TYPE, Integer.TYPE), "double -> int");
1148 assertFalse(ClassUtils.isAssignable(Double.TYPE, Long.TYPE), "double -> long");
1149 assertFalse(ClassUtils.isAssignable(Double.TYPE, Float.TYPE), "double -> float");
1150 assertTrue(ClassUtils.isAssignable(Double.TYPE, Double.TYPE), "double -> double");
1151 assertFalse(ClassUtils.isAssignable(Double.TYPE, Boolean.TYPE), "double -> boolean");
1152
1153 assertFalse(ClassUtils.isAssignable(Boolean.TYPE, Character.TYPE), "boolean -> char");
1154 assertFalse(ClassUtils.isAssignable(Boolean.TYPE, Byte.TYPE), "boolean -> byte");
1155 assertFalse(ClassUtils.isAssignable(Boolean.TYPE, Short.TYPE), "boolean -> short");
1156 assertFalse(ClassUtils.isAssignable(Boolean.TYPE, Integer.TYPE), "boolean -> int");
1157 assertFalse(ClassUtils.isAssignable(Boolean.TYPE, Long.TYPE), "boolean -> long");
1158 assertFalse(ClassUtils.isAssignable(Boolean.TYPE, Float.TYPE), "boolean -> float");
1159 assertFalse(ClassUtils.isAssignable(Boolean.TYPE, Double.TYPE), "boolean -> double");
1160 assertTrue(ClassUtils.isAssignable(Boolean.TYPE, Boolean.TYPE), "boolean -> boolean");
1161 }
1162
1163 @Test
1164 void test_isInnerClass_Class() {
1165 assertTrue(ClassUtils.isInnerClass(Inner.class));
1166 assertTrue(ClassUtils.isInnerClass(Map.Entry.class));
1167 assertTrue(ClassUtils.isInnerClass(new Cloneable() {
1168
1169 }.getClass()));
1170 assertFalse(ClassUtils.isInnerClass(this.getClass()));
1171 assertFalse(ClassUtils.isInnerClass(String.class));
1172 assertFalse(ClassUtils.isInnerClass(null));
1173 }
1174
1175 @Test
1176 void testComparable() {
1177 final TreeMap<Class<?>, String> map = new TreeMap<>(ClassUtils.comparator());
1178 map.put(String.class, "lastEntry");
1179 map.toString();
1180 map.put(Character.class, "firstEntry");
1181 map.toString();
1182 assertEquals("firstEntry", map.firstEntry().getValue());
1183 assertEquals(Character.class, map.firstEntry().getKey());
1184
1185 assertEquals("lastEntry", map.lastEntry().getValue());
1186 assertEquals(String.class, map.lastEntry().getKey());
1187
1188 map.put(null, "null");
1189 map.toString();
1190 assertEquals("null", map.get(null));
1191 }
1192
1193 @Test
1194 void testConstructor() {
1195 assertNotNull(new ClassUtils());
1196 final Constructor<?>[] cons = ClassUtils.class.getDeclaredConstructors();
1197 assertEquals(1, cons.length);
1198 assertTrue(Modifier.isPublic(cons[0].getModifiers()));
1199 assertTrue(Modifier.isPublic(ClassUtils.class.getModifiers()));
1200 assertFalse(Modifier.isFinal(ClassUtils.class.getModifiers()));
1201 }
1202
1203 @ParameterizedTest
1204 @IntRangeSource(from = 1, to = 255)
1205 void testGetClassArray(final int dimensions) throws ClassNotFoundException {
1206 assertEquals(dimensions,
1207 getDimension(ClassUtils.getClass("org.apache.commons.lang3.ClassUtilsTest$Inner.DeeplyNested" + StringUtils.repeat("[]", dimensions))));
1208 assertEquals(dimensions, getDimension(ClassUtils.getClass("java.lang.String" + StringUtils.repeat("[]", dimensions))));
1209 }
1210
1211 @ParameterizedTest
1212 @IntRangeSource(from = 256, to = 300)
1213 void testGetClassArrayIllegal(final int dimensions) throws ClassNotFoundException {
1214 assertThrows(IllegalArgumentException.class, () -> assertEquals(dimensions,
1215 getDimension(ClassUtils.getClass("org.apache.commons.lang3.ClassUtilsTest$Inner.DeeplyNested" + StringUtils.repeat("[]", dimensions)))));
1216 assertThrows(IllegalArgumentException.class,
1217 () -> assertEquals(dimensions, getDimension(ClassUtils.getClass("java.lang.String" + StringUtils.repeat("[]", dimensions)))));
1218 }
1219
1220 @Test
1221 void testGetClassByNormalNameArrays() throws ClassNotFoundException {
1222 assertEquals(int[].class, ClassUtils.getClass("int[]"));
1223 assertEquals(long[].class, ClassUtils.getClass("long[]"));
1224 assertEquals(short[].class, ClassUtils.getClass("short[]"));
1225 assertEquals(byte[].class, ClassUtils.getClass("byte[]"));
1226 assertEquals(char[].class, ClassUtils.getClass("char[]"));
1227 assertEquals(float[].class, ClassUtils.getClass("float[]"));
1228 assertEquals(double[].class, ClassUtils.getClass("double[]"));
1229 assertEquals(boolean[].class, ClassUtils.getClass("boolean[]"));
1230 assertEquals(String[].class, ClassUtils.getClass("java.lang.String[]"));
1231 assertEquals(java.util.Map.Entry[].class, ClassUtils.getClass("java.util.Map.Entry[]"));
1232 assertEquals(java.util.Map.Entry[].class, ClassUtils.getClass("java.util.Map$Entry[]"));
1233 assertEquals(java.util.Map.Entry[].class, ClassUtils.getClass("[Ljava.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 }
1237
1238 @Test
1239 void testGetClassByNormalNameArrays2D() throws ClassNotFoundException {
1240 assertEquals(int[][].class, ClassUtils.getClass("int[][]"));
1241 assertEquals(long[][].class, ClassUtils.getClass("long[][]"));
1242 assertEquals(short[][].class, ClassUtils.getClass("short[][]"));
1243 assertEquals(byte[][].class, ClassUtils.getClass("byte[][]"));
1244 assertEquals(char[][].class, ClassUtils.getClass("char[][]"));
1245 assertEquals(float[][].class, ClassUtils.getClass("float[][]"));
1246 assertEquals(double[][].class, ClassUtils.getClass("double[][]"));
1247 assertEquals(boolean[][].class, ClassUtils.getClass("boolean[][]"));
1248 assertEquals(String[][].class, ClassUtils.getClass("java.lang.String[][]"));
1249 }
1250
1251 @Test
1252 void testGetClassClassNotFound() throws Exception {
1253 assertGetClassThrowsClassNotFound("bool");
1254 assertGetClassThrowsClassNotFound("bool[]");
1255 assertGetClassThrowsClassNotFound("integer[]");
1256 assertGetClassThrowsClassNotFound("org.apache.commons.lang3.ClassUtilsTest.AClassThatCannotBeFound");
1257 }
1258
1259 @Test
1260 void testGetClassInner() throws ClassNotFoundException {
1261 assertEquals(Inner.DeeplyNested.class, ClassUtils.getClass("org.apache.commons.lang3.ClassUtilsTest.Inner.DeeplyNested"));
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$Inner.DeeplyNested[]"));
1266
1267 assertEquals(Inner.DeeplyNested.class, ClassUtils.getClass("org.apache.commons.lang3.ClassUtilsTest.Inner.DeeplyNested", true));
1268 assertEquals(Inner.DeeplyNested.class, ClassUtils.getClass("org.apache.commons.lang3.ClassUtilsTest.Inner$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$Inner.DeeplyNested", true));
1271
1272 final ClassLoader classLoader = Inner.DeeplyNested.class.getClassLoader();
1273 assertEquals(Inner.DeeplyNested.class, ClassUtils.getClass(classLoader, "org.apache.commons.lang3.ClassUtilsTest.Inner.DeeplyNested"));
1274 assertEquals(Inner.DeeplyNested.class, ClassUtils.getClass(classLoader, "org.apache.commons.lang3.ClassUtilsTest.Inner$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 }
1278
1279 @Test
1280 void testGetClassInvalidArguments() throws Exception {
1281 assertGetClassThrowsNullPointerException(null);
1282 assertGetClassThrowsClassNotFound("[][][]");
1283 assertGetClassThrowsClassNotFound("[[]");
1284 assertGetClassThrowsClassNotFound("[");
1285 assertGetClassThrowsClassNotFound("java.lang.String][");
1286 assertGetClassThrowsClassNotFound(".hello.world");
1287 assertGetClassThrowsClassNotFound("hello..world");
1288 }
1289
1290 @ParameterizedTest
1291 @IntRangeSource(from = 65536, to = 65555)
1292 void testGetClassLengthIllegal(final int classNameLength) throws ClassNotFoundException {
1293 assertThrows(IllegalArgumentException.class, () -> ClassUtils.getClass(StringUtils.repeat("a", classNameLength)));
1294 assertThrows(IllegalArgumentException.class, () -> assertEquals(classNameLength, ClassUtils.getClass(StringUtils.repeat("a.", classNameLength / 2))));
1295 }
1296
1297 @Test
1298 void testGetClassLongestCheck() throws ClassNotFoundException {
1299 final String maxClassName = StringUtils.repeat("a", 65535);
1300 final String maxDimensions = StringUtils.repeat("[]", MAX_ARRAY_DIMENSIONS);
1301 final String maxOpens = StringUtils.repeat("[", MAX_ARRAY_DIMENSIONS);
1302 assertThrows(ClassNotFoundException.class, () -> ClassUtils.getClass(maxClassName));
1303 assertNotNull(ClassUtils.getClass("java.lang.String" + maxDimensions));
1304 assertThrows(ClassNotFoundException.class, () -> ClassUtils.getClass(maxClassName + maxDimensions));
1305 assertThrows(ClassNotFoundException.class, () -> ClassUtils.getClass(maxOpens + "L" + maxClassName + ";"));
1306
1307 assertThrows(IllegalArgumentException.class, () -> ClassUtils.getClass(maxOpens + "[L" + maxClassName + ";"));
1308 }
1309
1310 @Test
1311 void testGetClassRawPrimitives() throws ClassNotFoundException {
1312 assertEquals(int.class, ClassUtils.getClass("int"));
1313 assertEquals(long.class, ClassUtils.getClass("long"));
1314 assertEquals(short.class, ClassUtils.getClass("short"));
1315 assertEquals(byte.class, ClassUtils.getClass("byte"));
1316 assertEquals(char.class, ClassUtils.getClass("char"));
1317 assertEquals(float.class, ClassUtils.getClass("float"));
1318 assertEquals(double.class, ClassUtils.getClass("double"));
1319 assertEquals(boolean.class, ClassUtils.getClass("boolean"));
1320 assertEquals(void.class, ClassUtils.getClass("void"));
1321 }
1322
1323 @Test
1324 void testGetClassStrict() throws Exception {
1325
1326 assertEquals(String.class, ClassUtils.getClassStrict("java.lang.String"));
1327 assertEquals(Inner.DeeplyNested.class, ClassUtils.getClassStrict("org.apache.commons.lang3.ClassUtilsTest.Inner.DeeplyNested"));
1328 final ClassLoader classLoader = Inner.DeeplyNested.class.getClassLoader();
1329 assertEquals(String.class, ClassUtils.getClassStrict(classLoader, "java.lang.String", true));
1330
1331 assertThrows(ClassNotFoundException.class, () -> ClassUtils.getClassStrict(" java.lang.String"));
1332 assertThrows(ClassNotFoundException.class, () -> ClassUtils.getClassStrict("java .lang.String"));
1333 assertThrows(ClassNotFoundException.class, () -> ClassUtils.getClassStrict("java.lang\t.String"));
1334 assertThrows(ClassNotFoundException.class, () -> ClassUtils.getClassStrict(classLoader, "java.lang.String ", true));
1335 assertThrows(NullPointerException.class, () -> ClassUtils.getClassStrict(null));
1336
1337 assertEquals(String.class, ClassUtils.getClass(" java.lang.String"));
1338 assertEquals(String.class, ClassUtils.getClass("java .lang.String"));
1339 }
1340
1341
1342
1343
1344
1345 @Test
1346 public void testGetClassStringMalformedMiddleJunkRejected() {
1347 assertThrows(IllegalArgumentException.class, () -> ClassUtils.getClass("java.lang.String[]junk[]"));
1348 }
1349
1350
1351
1352
1353
1354
1355 @Test
1356 public void testGetClassStringMalformedUnpairedBracketsRejected() {
1357 assertThrows(IllegalArgumentException.class, () -> ClassUtils.getClass("java.lang.String[]][]"));
1358 }
1359
1360
1361
1362
1363 @Test
1364 public void testGetClassStringWellFormedArrayStillResolves() throws Exception {
1365 assertNotNull(ClassUtils.getClass("java.lang.String[]"));
1366 assertNotNull(ClassUtils.getClass("java.lang.String[][]"));
1367 }
1368
1369 @Test
1370 void testGetClassWithArrayClasses() throws Exception {
1371 assertGetClassReturnsClass(String[].class);
1372 assertGetClassReturnsClass(int[].class);
1373 assertGetClassReturnsClass(long[].class);
1374 assertGetClassReturnsClass(short[].class);
1375 assertGetClassReturnsClass(byte[].class);
1376 assertGetClassReturnsClass(char[].class);
1377 assertGetClassReturnsClass(float[].class);
1378 assertGetClassReturnsClass(double[].class);
1379 assertGetClassReturnsClass(boolean[].class);
1380 }
1381
1382 @Test
1383 void testGetClassWithArrayClasses2D() throws Exception {
1384 assertGetClassReturnsClass(String[][].class);
1385 assertGetClassReturnsClass(int[][].class);
1386 assertGetClassReturnsClass(long[][].class);
1387 assertGetClassReturnsClass(short[][].class);
1388 assertGetClassReturnsClass(byte[][].class);
1389 assertGetClassReturnsClass(char[][].class);
1390 assertGetClassReturnsClass(float[][].class);
1391 assertGetClassReturnsClass(double[][].class);
1392 assertGetClassReturnsClass(boolean[][].class);
1393 }
1394
1395 @Test
1396 void testGetComponentType() {
1397 final CX[] newArray = {};
1398 @SuppressWarnings("unchecked")
1399 final Class<CX[]> classCxArray = (Class<CX[]>) newArray.getClass();
1400
1401 final Class<CX> componentType = ClassUtils.getComponentType(classCxArray);
1402 assertEquals(CX.class, componentType);
1403 assertNull(ClassUtils.getComponentType(null));
1404 }
1405
1406 @Test
1407 void testGetPublicMethod() throws Exception {
1408
1409 final Set<?> set = Collections.unmodifiableSet(new HashSet<>());
1410 final Method isEmptyMethod = ClassUtils.getPublicMethod(set.getClass(), "isEmpty");
1411 assertTrue(Modifier.isPublic(isEmptyMethod.getDeclaringClass().getModifiers()));
1412 assertTrue((Boolean) isEmptyMethod.invoke(set));
1413
1414
1415 final Method toStringMethod = ClassUtils.getPublicMethod(Object.class, "toString");
1416 assertEquals(Object.class.getMethod("toString"), toStringMethod);
1417 }
1418
1419 @Test
1420 void testHierarchyExcludingInterfaces() {
1421 final Iterator<Class<?>> iter = ClassUtils.hierarchy(StringParameterizedChild.class).iterator();
1422 assertEquals(StringParameterizedChild.class, iter.next());
1423 assertEquals(GenericParent.class, iter.next());
1424 assertEquals(Object.class, iter.next());
1425 assertFalse(iter.hasNext());
1426 }
1427
1428 @Test
1429 void testHierarchyIncludingInterfaces() {
1430 final Iterator<Class<?>> iter = ClassUtils.hierarchy(StringParameterizedChild.class, Interfaces.INCLUDE).iterator();
1431 assertEquals(StringParameterizedChild.class, iter.next());
1432 assertEquals(GenericParent.class, iter.next());
1433 assertEquals(GenericConsumer.class, iter.next());
1434 assertEquals(Object.class, iter.next());
1435 assertFalse(iter.hasNext());
1436 }
1437
1438 @Test
1439 void testIsPrimitiveOrWrapper() {
1440
1441 assertTrue(ClassUtils.isPrimitiveOrWrapper(Boolean.class), "Boolean.class");
1442 assertTrue(ClassUtils.isPrimitiveOrWrapper(Byte.class), "Byte.class");
1443 assertTrue(ClassUtils.isPrimitiveOrWrapper(Character.class), "Character.class");
1444 assertTrue(ClassUtils.isPrimitiveOrWrapper(Short.class), "Short.class");
1445 assertTrue(ClassUtils.isPrimitiveOrWrapper(Integer.class), "Integer.class");
1446 assertTrue(ClassUtils.isPrimitiveOrWrapper(Long.class), "Long.class");
1447 assertTrue(ClassUtils.isPrimitiveOrWrapper(Double.class), "Double.class");
1448 assertTrue(ClassUtils.isPrimitiveOrWrapper(Float.class), "Float.class");
1449
1450 assertTrue(ClassUtils.isPrimitiveOrWrapper(Boolean.TYPE), "boolean");
1451 assertTrue(ClassUtils.isPrimitiveOrWrapper(Byte.TYPE), "byte");
1452 assertTrue(ClassUtils.isPrimitiveOrWrapper(Character.TYPE), "char");
1453 assertTrue(ClassUtils.isPrimitiveOrWrapper(Short.TYPE), "short");
1454 assertTrue(ClassUtils.isPrimitiveOrWrapper(Integer.TYPE), "int");
1455 assertTrue(ClassUtils.isPrimitiveOrWrapper(Long.TYPE), "long");
1456 assertTrue(ClassUtils.isPrimitiveOrWrapper(Double.TYPE), "double");
1457 assertTrue(ClassUtils.isPrimitiveOrWrapper(Float.TYPE), "float");
1458 assertTrue(ClassUtils.isPrimitiveOrWrapper(Void.TYPE), "Void.TYPE");
1459
1460 assertFalse(ClassUtils.isPrimitiveOrWrapper(null), "null");
1461 assertFalse(ClassUtils.isPrimitiveOrWrapper(Void.class), "Void.class");
1462 assertFalse(ClassUtils.isPrimitiveOrWrapper(String.class), "String.class");
1463 assertFalse(ClassUtils.isPrimitiveOrWrapper(this.getClass()), "this.getClass()");
1464 }
1465
1466 @Test
1467 void testIsPrimitiveWrapper() {
1468
1469
1470 assertTrue(ClassUtils.isPrimitiveWrapper(Boolean.class), "Boolean.class");
1471 assertTrue(ClassUtils.isPrimitiveWrapper(Byte.class), "Byte.class");
1472 assertTrue(ClassUtils.isPrimitiveWrapper(Character.class), "Character.class");
1473 assertTrue(ClassUtils.isPrimitiveWrapper(Short.class), "Short.class");
1474 assertTrue(ClassUtils.isPrimitiveWrapper(Integer.class), "Integer.class");
1475 assertTrue(ClassUtils.isPrimitiveWrapper(Long.class), "Long.class");
1476 assertTrue(ClassUtils.isPrimitiveWrapper(Double.class), "Double.class");
1477 assertTrue(ClassUtils.isPrimitiveWrapper(Float.class), "Float.class");
1478
1479
1480 assertFalse(ClassUtils.isPrimitiveWrapper(Boolean.TYPE), "boolean");
1481 assertFalse(ClassUtils.isPrimitiveWrapper(Byte.TYPE), "byte");
1482 assertFalse(ClassUtils.isPrimitiveWrapper(Character.TYPE), "char");
1483 assertFalse(ClassUtils.isPrimitiveWrapper(Short.TYPE), "short");
1484 assertFalse(ClassUtils.isPrimitiveWrapper(Integer.TYPE), "int");
1485 assertFalse(ClassUtils.isPrimitiveWrapper(Long.TYPE), "long");
1486 assertFalse(ClassUtils.isPrimitiveWrapper(Double.TYPE), "double");
1487 assertFalse(ClassUtils.isPrimitiveWrapper(Float.TYPE), "float");
1488
1489
1490 assertFalse(ClassUtils.isPrimitiveWrapper(null), "null");
1491 assertFalse(ClassUtils.isPrimitiveWrapper(Void.class), "Void.class");
1492 assertFalse(ClassUtils.isPrimitiveWrapper(Void.TYPE), "Void.TYPE");
1493 assertFalse(ClassUtils.isPrimitiveWrapper(String.class), "String.class");
1494 assertFalse(ClassUtils.isPrimitiveWrapper(this.getClass()), "this.getClass()");
1495 }
1496
1497 @Test
1498 void testPrimitivesToWrappers() {
1499
1500
1501 assertNull(ClassUtils.primitivesToWrappers((Class<?>[]) null), "null -> null");
1502
1503 assertArrayEquals(ArrayUtils.EMPTY_CLASS_ARRAY, ClassUtils.primitivesToWrappers(), "empty -> empty");
1504 final Class<?>[] castNull = ClassUtils.primitivesToWrappers((Class<?>) null);
1505 assertArrayEquals(new Class<?>[] {null}, castNull, "(Class<?>) null -> [null]");
1506
1507 assertArrayEquals(ArrayUtils.EMPTY_CLASS_ARRAY, ClassUtils.primitivesToWrappers(ArrayUtils.EMPTY_CLASS_ARRAY), "empty -> empty");
1508
1509
1510 final Class<?>[] primitives = new Class[] {Boolean.TYPE, Byte.TYPE, Character.TYPE, Short.TYPE, Integer.TYPE, Long.TYPE, Double.TYPE, Float.TYPE,
1511 String.class, ClassUtils.class};
1512 final Class<?>[] wrappers = ClassUtils.primitivesToWrappers(primitives);
1513
1514 for (int i = 0; i < primitives.length; i++) {
1515
1516 final Class<?> primitive = primitives[i];
1517 final Class<?> expectedWrapper = ClassUtils.primitiveToWrapper(primitive);
1518
1519 assertEquals(expectedWrapper, wrappers[i], primitive + " -> " + expectedWrapper);
1520 }
1521
1522
1523 final Class<?>[] noPrimitives = new Class[] {String.class, ClassUtils.class, Void.TYPE};
1524
1525 assertNotSame(noPrimitives, ClassUtils.primitivesToWrappers(noPrimitives), "unmodified");
1526 }
1527
1528 @Test
1529 void testPrimitiveToWrapper() {
1530
1531
1532 assertEquals(Boolean.class, ClassUtils.primitiveToWrapper(Boolean.TYPE), "boolean -> Boolean.class");
1533 assertEquals(Byte.class, ClassUtils.primitiveToWrapper(Byte.TYPE), "byte -> Byte.class");
1534 assertEquals(Character.class, ClassUtils.primitiveToWrapper(Character.TYPE), "char -> Character.class");
1535 assertEquals(Short.class, ClassUtils.primitiveToWrapper(Short.TYPE), "short -> Short.class");
1536 assertEquals(Integer.class, ClassUtils.primitiveToWrapper(Integer.TYPE), "int -> Integer.class");
1537 assertEquals(Long.class, ClassUtils.primitiveToWrapper(Long.TYPE), "long -> Long.class");
1538 assertEquals(Double.class, ClassUtils.primitiveToWrapper(Double.TYPE), "double -> Double.class");
1539 assertEquals(Float.class, ClassUtils.primitiveToWrapper(Float.TYPE), "float -> Float.class");
1540
1541
1542 assertEquals(String.class, ClassUtils.primitiveToWrapper(String.class), "String.class -> String.class");
1543 assertEquals(ClassUtils.class, ClassUtils.primitiveToWrapper(ClassUtils.class), "ClassUtils.class -> ClassUtils.class");
1544 assertEquals(Void.TYPE, ClassUtils.primitiveToWrapper(Void.TYPE), "Void.TYPE -> Void.TYPE");
1545
1546
1547 assertNull(ClassUtils.primitiveToWrapper(null), "null -> null");
1548 }
1549
1550
1551
1552 @Test
1553 void testShowJavaBug() throws Exception {
1554
1555 final Set<?> set = Collections.unmodifiableSet(new HashSet<>());
1556 final Method isEmptyMethod = set.getClass().getMethod("isEmpty");
1557 assertThrows(IllegalAccessException.class, () -> isEmptyMethod.invoke(set));
1558 }
1559
1560 @Test
1561 void testToClass_object() {
1562
1563 assertNull(ClassUtils.toClass((Object[]) null));
1564
1565
1566 assertArrayEquals(ArrayUtils.EMPTY_CLASS_ARRAY, ClassUtils.toClass(), "empty -> empty");
1567 final Class<?>[] castNull = ClassUtils.toClass((Object) null);
1568 assertArrayEquals(new Object[] {null}, castNull, "(Object) null -> [null]");
1569
1570 assertSame(ArrayUtils.EMPTY_CLASS_ARRAY, ClassUtils.toClass(ArrayUtils.EMPTY_OBJECT_ARRAY));
1571
1572 assertArrayEquals(new Class[] {String.class, Integer.class, Double.class}, ClassUtils.toClass("Test", Integer.valueOf(1), Double.valueOf(99d)));
1573
1574 assertArrayEquals(new Class[] {String.class, null, Double.class}, ClassUtils.toClass("Test", null, Double.valueOf(99d)));
1575 }
1576
1577 @Test
1578 void testWithInterleavingWhitespace() throws ClassNotFoundException {
1579 assertEquals(int[].class, ClassUtils.getClass(" int [ ] "));
1580 assertEquals(long[].class, ClassUtils.getClass("\rlong\t[\n]\r"));
1581 assertEquals(short[].class, ClassUtils.getClass("\tshort \t\t[]"));
1582 assertEquals(byte[].class, ClassUtils.getClass("byte[\t\t\n\r] "));
1583 }
1584
1585 @Test
1586 void testWrappersToPrimitives() {
1587
1588 final Class<?>[] classes = {Boolean.class, Byte.class, Character.class, Short.class, Integer.class, Long.class, Float.class, Double.class, String.class,
1589 ClassUtils.class, null};
1590
1591 final Class<?>[] primitives = ClassUtils.wrappersToPrimitives(classes);
1592
1593 assertEquals(classes.length, primitives.length, "Wrong length of result array");
1594 for (int i = 0; i < classes.length; i++) {
1595 final Class<?> expectedPrimitive = ClassUtils.wrapperToPrimitive(classes[i]);
1596 assertEquals(expectedPrimitive, primitives[i], classes[i] + " -> " + expectedPrimitive);
1597 }
1598 }
1599
1600 @Test
1601 void testWrappersToPrimitivesEmpty() {
1602 final Class<?>[] empty = new Class[0];
1603 assertArrayEquals(empty, ClassUtils.wrappersToPrimitives(empty), "Wrong result for empty input");
1604 }
1605
1606 @Test
1607 void testWrappersToPrimitivesNull() {
1608
1609 assertNull(ClassUtils.wrappersToPrimitives((Class<?>[]) null), "Wrong result for null input");
1610
1611 assertArrayEquals(ArrayUtils.EMPTY_CLASS_ARRAY, ClassUtils.wrappersToPrimitives(), "empty -> empty");
1612 final Class<?>[] castNull = ClassUtils.wrappersToPrimitives((Class<?>) null);
1613 assertArrayEquals(new Class<?>[] {null}, castNull, "(Class<?>) null -> [null]");
1614 }
1615
1616 @Test
1617 void testWrapperToPrimitive() {
1618
1619 final Class<?>[] primitives = {Boolean.TYPE, Byte.TYPE, Character.TYPE, Short.TYPE, Integer.TYPE, Long.TYPE, Float.TYPE, Double.TYPE};
1620 for (final Class<?> primitive : primitives) {
1621 final Class<?> wrapperCls = ClassUtils.primitiveToWrapper(primitive);
1622 assertFalse(wrapperCls.isPrimitive(), "Still primitive");
1623 assertEquals(primitive, ClassUtils.wrapperToPrimitive(wrapperCls), wrapperCls + " -> " + primitive);
1624 }
1625 }
1626
1627 @Test
1628 void testWrapperToPrimitiveNoWrapper() {
1629 assertNull(ClassUtils.wrapperToPrimitive(String.class), "Wrong result for non wrapper class");
1630 }
1631
1632 @Test
1633 void testWrapperToPrimitiveNull() {
1634 assertNull(ClassUtils.wrapperToPrimitive(null), "Wrong result for null class");
1635 }
1636 }