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17 package org.apache.commons.lang3;
18
19 import static org.junit.jupiter.api.Assertions.assertArrayEquals;
20 import static org.junit.jupiter.api.Assertions.assertEquals;
21 import static org.junit.jupiter.api.Assertions.assertFalse;
22 import static org.junit.jupiter.api.Assertions.assertNotNull;
23 import static org.junit.jupiter.api.Assertions.assertNotSame;
24 import static org.junit.jupiter.api.Assertions.assertNull;
25 import static org.junit.jupiter.api.Assertions.assertSame;
26 import static org.junit.jupiter.api.Assertions.assertThrows;
27 import static org.junit.jupiter.api.Assertions.assertTrue;
28
29 import java.lang.reflect.Constructor;
30 import java.lang.reflect.Method;
31 import java.lang.reflect.Modifier;
32 import java.util.ArrayList;
33 import java.util.Collections;
34 import java.util.HashSet;
35 import java.util.Iterator;
36 import java.util.List;
37 import java.util.Map;
38 import java.util.Set;
39 import java.util.TreeMap;
40
41 import org.apache.commons.lang3.ClassUtils.Interfaces;
42 import org.apache.commons.lang3.reflect.testbed.GenericConsumer;
43 import org.apache.commons.lang3.reflect.testbed.GenericParent;
44 import org.apache.commons.lang3.reflect.testbed.StringParameterizedChild;
45 import org.junit.jupiter.api.Assertions;
46 import org.junit.jupiter.api.DisplayName;
47 import org.junit.jupiter.api.Test;
48
49
50
51
52 @SuppressWarnings("boxing")
53 public class ClassUtilsTest extends AbstractLangTest {
54
55 private static class CX implements IB, IA, IE {
56
57 }
58
59 @SuppressWarnings("unused")
60 private static final class CY extends CX implements IB, IC {
61
62 }
63
64 private interface IA {
65
66 }
67
68 private interface IB {
69
70 }
71
72 private interface IC extends ID, IE {
73
74 }
75
76 private interface ID {
77
78 }
79
80 private interface IE extends IF {
81
82 }
83
84 private interface IF {
85
86 }
87
88 private static final class Inner {
89 private final class DeeplyNested {
90
91 }
92 }
93
94 private static final String OBJECT_CANONICAL_NAME = "java.lang.Object";
95
96 private void assertGetClassReturnsClass(final Class<?> c) throws Exception {
97 assertEquals(c, ClassUtils.getClass(c.getName()));
98 }
99
100 private void assertGetClassThrowsClassNotFound(final String className) {
101 assertGetClassThrowsException(className, ClassNotFoundException.class);
102 }
103
104 private void assertGetClassThrowsException(final String className, final Class<? extends Exception> exceptionType) {
105 assertThrows(exceptionType, () -> ClassUtils.getClass(className),
106 "ClassUtils.getClass() should fail with an exception of type " + exceptionType.getName() + " when given class name \"" + className + "\".");
107 }
108
109 private void assertGetClassThrowsNullPointerException(final String className) {
110 assertGetClassThrowsException(className, NullPointerException.class);
111 }
112
113 @Test
114 public void test_convertClassesToClassNames_List() {
115 final List<Class<?>> list = new ArrayList<>();
116 List<String> result = ClassUtils.convertClassesToClassNames(list);
117 assertEquals(0, result.size());
118
119 list.add(String.class);
120 list.add(null);
121 list.add(Object.class);
122 result = ClassUtils.convertClassesToClassNames(list);
123 assertEquals(3, result.size());
124 assertEquals("java.lang.String", result.get(0));
125 assertNull(result.get(1));
126 assertEquals(OBJECT_CANONICAL_NAME, result.get(2));
127
128 @SuppressWarnings("unchecked")
129 final List<Object> olist = (List<Object>) (List<?>) list;
130 olist.add(new Object());
131 assertThrows(ClassCastException.class, () -> ClassUtils.convertClassesToClassNames(list), "Should not have been able to convert list");
132 assertNull(ClassUtils.convertClassesToClassNames(null));
133 }
134
135 @Test
136 public void test_convertClassNamesToClasses_List() {
137 final List<String> list = new ArrayList<>();
138 List<Class<?>> result = ClassUtils.convertClassNamesToClasses(list);
139 assertEquals(0, result.size());
140
141 list.add("java.lang.String");
142 list.add("java.lang.xxx");
143 list.add(OBJECT_CANONICAL_NAME);
144 result = ClassUtils.convertClassNamesToClasses(list);
145 assertEquals(3, result.size());
146 assertEquals(String.class, result.get(0));
147 assertNull(result.get(1));
148 assertEquals(Object.class, result.get(2));
149
150 @SuppressWarnings("unchecked")
151 final List<Object> olist = (List<Object>) (List<?>) list;
152 olist.add(new Object());
153 assertThrows(ClassCastException.class, () -> ClassUtils.convertClassNamesToClasses(list), "Should not have been able to convert list");
154 assertNull(ClassUtils.convertClassNamesToClasses(null));
155 }
156
157 @Test
158 public void test_getAbbreviatedName_Class() {
159 assertEquals("", ClassUtils.getAbbreviatedName((Class<?>) null, 1));
160 assertEquals("j.l.String", ClassUtils.getAbbreviatedName(String.class, 1));
161 assertEquals("j.l.String", ClassUtils.getAbbreviatedName(String.class, 5));
162 assertEquals("o.a.c.l.ClassUtils", ClassUtils.getAbbreviatedName(ClassUtils.class, 18));
163 assertEquals("j.lang.String", ClassUtils.getAbbreviatedName(String.class, 13));
164 assertEquals("j.lang.String", ClassUtils.getAbbreviatedName(String.class, 15));
165 assertEquals("java.lang.String", ClassUtils.getAbbreviatedName(String.class, 20));
166 }
167
168 @Test
169 @DisplayName("When the desired length is negative then exception is thrown")
170 public void test_getAbbreviatedName_Class_NegativeLen() {
171 assertThrows(IllegalArgumentException.class, () -> ClassUtils.getAbbreviatedName(String.class, -10));
172 }
173
174 @Test
175 @DisplayName("When the desired length is zero then exception is thrown")
176 public void test_getAbbreviatedName_Class_ZeroLen() {
177 assertThrows(IllegalArgumentException.class, () -> ClassUtils.getAbbreviatedName(String.class, 0));
178 }
179
180 @Test
181 public void test_getAbbreviatedName_String() {
182 assertEquals("", ClassUtils.getAbbreviatedName((String) null, 1));
183 assertEquals("", ClassUtils.getAbbreviatedName("", 1));
184 assertEquals("WithoutPackage", ClassUtils.getAbbreviatedName("WithoutPackage", 1));
185 assertEquals("j.l.String", ClassUtils.getAbbreviatedName("java.lang.String", 1));
186 assertEquals("o.a.c.l.ClassUtils", ClassUtils.getAbbreviatedName("org.apache.commons.lang3.ClassUtils", 18));
187 assertEquals("org.apache.commons.lang3.ClassUtils",
188 ClassUtils.getAbbreviatedName("org.apache.commons.lang3.ClassUtils", "org.apache.commons.lang3.ClassUtils".length()));
189 assertEquals("o.a.c.l.ClassUtils", ClassUtils.getAbbreviatedName("o.a.c.l.ClassUtils", 18));
190 assertEquals("o..c.l.ClassUtils", ClassUtils.getAbbreviatedName("o..c.l.ClassUtils", 18));
191 assertEquals(".", ClassUtils.getAbbreviatedName(".", 18));
192 assertEquals(".", ClassUtils.getAbbreviatedName(".", 1));
193 assertEquals("..", ClassUtils.getAbbreviatedName("..", 1));
194 assertEquals("...", ClassUtils.getAbbreviatedName("...", 2));
195 assertEquals("...", ClassUtils.getAbbreviatedName("...", 3));
196 assertEquals("java.lang.String", ClassUtils.getAbbreviatedName("java.lang.String", Integer.MAX_VALUE));
197 assertEquals("j.lang.String", ClassUtils.getAbbreviatedName("java.lang.String", "j.lang.String".length()));
198 assertEquals("j.l.String", ClassUtils.getAbbreviatedName("java.lang.String", "j.lang.String".length() - 1));
199 assertEquals("j.l.String", ClassUtils.getAbbreviatedName("java.lang.String", "j.l.String".length()));
200 assertEquals("j.l.String", ClassUtils.getAbbreviatedName("java.lang.String", "j.l.String".length() - 1));
201 }
202
203
204
205
206
207
208 @Test
209 @DisplayName("When the length hint is longer than the actual length then the same String object is returned")
210 public void test_getAbbreviatedName_TooLongHint() {
211 final String className = "java.lang.String";
212 Assertions.assertSame(className, ClassUtils.getAbbreviatedName(className, className.length() + 1));
213 Assertions.assertSame(className, ClassUtils.getAbbreviatedName(className, className.length()));
214 }
215
216 @Test
217 public void test_getAllInterfaces_Class() {
218 final List<?> list = ClassUtils.getAllInterfaces(CY.class);
219 assertEquals(6, list.size());
220 assertEquals(IB.class, list.get(0));
221 assertEquals(IC.class, list.get(1));
222 assertEquals(ID.class, list.get(2));
223 assertEquals(IE.class, list.get(3));
224 assertEquals(IF.class, list.get(4));
225 assertEquals(IA.class, list.get(5));
226
227 assertNull(ClassUtils.getAllInterfaces(null));
228 }
229
230 @Test
231 public void test_getAllSuperclasses_Class() {
232 final List<?> list = ClassUtils.getAllSuperclasses(CY.class);
233 assertEquals(2, list.size());
234 assertEquals(CX.class, list.get(0));
235 assertEquals(Object.class, list.get(1));
236
237 assertNull(ClassUtils.getAllSuperclasses(null));
238 }
239
240 @Test
241 public void test_getCanonicalName_Class() {
242 assertEquals("org.apache.commons.lang3.ClassUtils", ClassUtils.getCanonicalName(ClassUtils.class));
243 assertEquals("java.util.Map.Entry", ClassUtils.getCanonicalName(Map.Entry.class));
244 assertEquals("", ClassUtils.getCanonicalName((Class<?>) null));
245
246 assertEquals("java.lang.String[]", ClassUtils.getCanonicalName(String[].class));
247 assertEquals("java.util.Map.Entry[]", ClassUtils.getCanonicalName(Map.Entry[].class));
248
249
250 assertEquals("boolean", ClassUtils.getCanonicalName(boolean.class));
251 assertEquals("byte", ClassUtils.getCanonicalName(byte.class));
252 assertEquals("char", ClassUtils.getCanonicalName(char.class));
253 assertEquals("short", ClassUtils.getCanonicalName(short.class));
254 assertEquals("int", ClassUtils.getCanonicalName(int.class));
255 assertEquals("long", ClassUtils.getCanonicalName(long.class));
256 assertEquals("float", ClassUtils.getCanonicalName(float.class));
257 assertEquals("double", ClassUtils.getCanonicalName(double.class));
258
259
260 assertEquals("boolean[]", ClassUtils.getCanonicalName(boolean[].class));
261 assertEquals("byte[]", ClassUtils.getCanonicalName(byte[].class));
262 assertEquals("char[]", ClassUtils.getCanonicalName(char[].class));
263 assertEquals("short[]", ClassUtils.getCanonicalName(short[].class));
264 assertEquals("int[]", ClassUtils.getCanonicalName(int[].class));
265 assertEquals("long[]", ClassUtils.getCanonicalName(long[].class));
266 assertEquals("float[]", ClassUtils.getCanonicalName(float[].class));
267 assertEquals("double[]", ClassUtils.getCanonicalName(double[].class));
268
269
270 assertEquals("java.lang.String[][]", ClassUtils.getCanonicalName(String[][].class));
271 assertEquals("java.lang.String[][][]", ClassUtils.getCanonicalName(String[][][].class));
272 assertEquals("java.lang.String[][][][]", ClassUtils.getCanonicalName(String[][][][].class));
273
274
275 final class Named {
276
277 }
278 assertEquals(StringUtils.EMPTY, ClassUtils.getCanonicalName(new Object() {
279
280 }.getClass()));
281 assertEquals(StringUtils.EMPTY, ClassUtils.getCanonicalName(Named.class));
282 assertEquals("org.apache.commons.lang3.ClassUtilsTest.Inner", ClassUtils.getCanonicalName(Inner.class));
283 }
284
285 @Test
286 public void test_getCanonicalName_Class_String() {
287 assertEquals("org.apache.commons.lang3.ClassUtils", ClassUtils.getCanonicalName(ClassUtils.class, "X"));
288 assertEquals("java.util.Map.Entry", ClassUtils.getCanonicalName(Map.Entry.class, "X"));
289 assertEquals("X", ClassUtils.getCanonicalName((Class<?>) null, "X"));
290
291 assertEquals("java.lang.String[]", ClassUtils.getCanonicalName(String[].class, "X"));
292 assertEquals("java.util.Map.Entry[]", ClassUtils.getCanonicalName(Map.Entry[].class, "X"));
293
294
295 assertEquals("boolean", ClassUtils.getCanonicalName(boolean.class, "X"));
296 assertEquals("byte", ClassUtils.getCanonicalName(byte.class, "X"));
297 assertEquals("char", ClassUtils.getCanonicalName(char.class, "X"));
298 assertEquals("short", ClassUtils.getCanonicalName(short.class, "X"));
299 assertEquals("int", ClassUtils.getCanonicalName(int.class, "X"));
300 assertEquals("long", ClassUtils.getCanonicalName(long.class, "X"));
301 assertEquals("float", ClassUtils.getCanonicalName(float.class, "X"));
302 assertEquals("double", ClassUtils.getCanonicalName(double.class, "X"));
303
304
305 assertEquals("boolean[]", ClassUtils.getCanonicalName(boolean[].class, "X"));
306 assertEquals("byte[]", ClassUtils.getCanonicalName(byte[].class, "X"));
307 assertEquals("char[]", ClassUtils.getCanonicalName(char[].class, "X"));
308 assertEquals("short[]", ClassUtils.getCanonicalName(short[].class, "X"));
309 assertEquals("int[]", ClassUtils.getCanonicalName(int[].class, "X"));
310 assertEquals("long[]", ClassUtils.getCanonicalName(long[].class, "X"));
311 assertEquals("float[]", ClassUtils.getCanonicalName(float[].class, "X"));
312 assertEquals("double[]", ClassUtils.getCanonicalName(double[].class, "X"));
313
314
315 assertEquals("java.lang.String[][]", ClassUtils.getCanonicalName(String[][].class, "X"));
316 assertEquals("java.lang.String[][][]", ClassUtils.getCanonicalName(String[][][].class, "X"));
317 assertEquals("java.lang.String[][][][]", ClassUtils.getCanonicalName(String[][][][].class, "X"));
318
319
320 final class Named {
321
322 }
323 assertEquals("X", ClassUtils.getCanonicalName(new Object() {
324
325 }.getClass(), "X"));
326 assertEquals("X", ClassUtils.getCanonicalName(Named.class, "X"));
327 assertEquals("org.apache.commons.lang3.ClassUtilsTest.Inner", ClassUtils.getCanonicalName(Inner.class, "X"));
328 assertEquals("X", ClassUtils.getCanonicalName((Object) null, "X"));
329 assertEquals(OBJECT_CANONICAL_NAME, ClassUtils.getCanonicalName(new Object()));
330 }
331
332 @Test
333 public void test_getClass() {
334
335 }
336
337 @Test
338 public void test_getName_Class() {
339 assertEquals("org.apache.commons.lang3.ClassUtils", ClassUtils.getName(ClassUtils.class));
340 assertEquals("java.util.Map$Entry", ClassUtils.getName(Map.Entry.class));
341 assertEquals("", ClassUtils.getName((Class<?>) null));
342
343 assertEquals("[Ljava.lang.String;", ClassUtils.getName(String[].class));
344 assertEquals("[Ljava.util.Map$Entry;", ClassUtils.getName(Map.Entry[].class));
345
346
347 assertEquals("boolean", ClassUtils.getName(boolean.class));
348 assertEquals("byte", ClassUtils.getName(byte.class));
349 assertEquals("char", ClassUtils.getName(char.class));
350 assertEquals("short", ClassUtils.getName(short.class));
351 assertEquals("int", ClassUtils.getName(int.class));
352 assertEquals("long", ClassUtils.getName(long.class));
353 assertEquals("float", ClassUtils.getName(float.class));
354 assertEquals("double", ClassUtils.getName(double.class));
355
356
357 assertEquals("[Z", ClassUtils.getName(boolean[].class));
358 assertEquals("[B", ClassUtils.getName(byte[].class));
359 assertEquals("[C", ClassUtils.getName(char[].class));
360 assertEquals("[S", ClassUtils.getName(short[].class));
361 assertEquals("[I", ClassUtils.getName(int[].class));
362 assertEquals("[J", ClassUtils.getName(long[].class));
363 assertEquals("[F", ClassUtils.getName(float[].class));
364 assertEquals("[D", ClassUtils.getName(double[].class));
365
366
367 assertEquals("[[Ljava.lang.String;", ClassUtils.getName(String[][].class));
368 assertEquals("[[[Ljava.lang.String;", ClassUtils.getName(String[][][].class));
369 assertEquals("[[[[Ljava.lang.String;", ClassUtils.getName(String[][][][].class));
370
371
372 final class Named {
373
374 }
375 assertEquals("org.apache.commons.lang3.ClassUtilsTest$3", ClassUtils.getName(new Object() {
376
377 }.getClass()));
378 assertEquals("org.apache.commons.lang3.ClassUtilsTest$3Named", ClassUtils.getName(Named.class));
379 assertEquals("org.apache.commons.lang3.ClassUtilsTest$Inner", ClassUtils.getName(Inner.class));
380 assertEquals(OBJECT_CANONICAL_NAME, ClassUtils.getName(new Object()));
381 }
382
383 @Test
384 public void test_getName_Object() {
385 assertEquals("org.apache.commons.lang3.ClassUtils", ClassUtils.getName(new ClassUtils(), "<null>"));
386 assertEquals("org.apache.commons.lang3.ClassUtilsTest$Inner", ClassUtils.getName(new Inner(), "<null>"));
387 assertEquals("java.lang.String", ClassUtils.getName("hello", "<null>"));
388 assertEquals("<null>", ClassUtils.getName(null, "<null>"));
389
390
391 final class Named {
392
393 }
394 assertEquals("org.apache.commons.lang3.ClassUtilsTest$4", ClassUtils.getName(new Object() {
395
396 }, "<null>"));
397 assertEquals("org.apache.commons.lang3.ClassUtilsTest$4Named", ClassUtils.getName(new Named(), "<null>"));
398 assertEquals("org.apache.commons.lang3.ClassUtilsTest$Inner", ClassUtils.getName(new Inner(), "<null>"));
399 }
400
401 @Test
402 public void test_getPackageCanonicalName_Class() {
403 assertEquals("org.apache.commons.lang3", ClassUtils.getPackageCanonicalName(ClassUtils.class));
404 assertEquals("org.apache.commons.lang3", ClassUtils.getPackageCanonicalName(ClassUtils[].class));
405 assertEquals("org.apache.commons.lang3", ClassUtils.getPackageCanonicalName(ClassUtils[][].class));
406 assertEquals("", ClassUtils.getPackageCanonicalName(int[].class));
407 assertEquals("", ClassUtils.getPackageCanonicalName(int[][].class));
408
409
410 final class Named {
411
412 }
413 assertEquals("org.apache.commons.lang3", ClassUtils.getPackageCanonicalName(new Object() {
414
415 }.getClass()));
416 assertEquals("org.apache.commons.lang3", ClassUtils.getPackageCanonicalName(Named.class));
417 assertEquals("org.apache.commons.lang3", ClassUtils.getPackageCanonicalName(Inner.class));
418 assertEquals(StringUtils.EMPTY, ClassUtils.getPackageCanonicalName((Class<?>) null));
419 }
420
421 @Test
422 public void test_getPackageCanonicalName_Object() {
423 assertEquals("<null>", ClassUtils.getPackageCanonicalName(null, "<null>"));
424 assertEquals("org.apache.commons.lang3", ClassUtils.getPackageCanonicalName(new ClassUtils(), "<null>"));
425 assertEquals("org.apache.commons.lang3", ClassUtils.getPackageCanonicalName(new ClassUtils[0], "<null>"));
426 assertEquals("org.apache.commons.lang3", ClassUtils.getPackageCanonicalName(new ClassUtils[0][0], "<null>"));
427 assertEquals("", ClassUtils.getPackageCanonicalName(new int[0], "<null>"));
428 assertEquals("", ClassUtils.getPackageCanonicalName(new int[0][0], "<null>"));
429
430
431 final class Named {
432
433 }
434 assertEquals("org.apache.commons.lang3", ClassUtils.getPackageCanonicalName(new Object() {
435
436 }, "<null>"));
437 assertEquals("org.apache.commons.lang3", ClassUtils.getPackageCanonicalName(new Named(), "<null>"));
438 assertEquals("org.apache.commons.lang3", ClassUtils.getPackageCanonicalName(new Inner(), "<null>"));
439 }
440
441 @Test
442 public void test_getPackageCanonicalName_String() {
443 assertEquals("org.apache.commons.lang3", ClassUtils.getPackageCanonicalName("org.apache.commons.lang3.ClassUtils"));
444 assertEquals("org.apache.commons.lang3", ClassUtils.getPackageCanonicalName("[Lorg.apache.commons.lang3.ClassUtils;"));
445 assertEquals("org.apache.commons.lang3", ClassUtils.getPackageCanonicalName("[[Lorg.apache.commons.lang3.ClassUtils;"));
446 assertEquals("org.apache.commons.lang3", ClassUtils.getPackageCanonicalName("org.apache.commons.lang3.ClassUtils[]"));
447 assertEquals("org.apache.commons.lang3", ClassUtils.getPackageCanonicalName("org.apache.commons.lang3.ClassUtils[][]"));
448 assertEquals("", ClassUtils.getPackageCanonicalName("[I"));
449 assertEquals("", ClassUtils.getPackageCanonicalName("[[I"));
450 assertEquals("", ClassUtils.getPackageCanonicalName("int[]"));
451 assertEquals("", ClassUtils.getPackageCanonicalName("int[][]"));
452
453
454 assertEquals("org.apache.commons.lang3", ClassUtils.getPackageCanonicalName("org.apache.commons.lang3.ClassUtilsTest$6"));
455 assertEquals("org.apache.commons.lang3", ClassUtils.getPackageCanonicalName("org.apache.commons.lang3.ClassUtilsTest$5Named"));
456 assertEquals("org.apache.commons.lang3", ClassUtils.getPackageCanonicalName("org.apache.commons.lang3.ClassUtilsTest$Inner"));
457 }
458
459 @Test
460 public void test_getPackageName_Class() {
461 assertEquals("java.lang", ClassUtils.getPackageName(String.class));
462 assertEquals("java.util", ClassUtils.getPackageName(Map.Entry.class));
463 assertEquals("", ClassUtils.getPackageName((Class<?>) null));
464
465
466 assertEquals("java.lang", ClassUtils.getPackageName(String[].class));
467
468
469 assertEquals("", ClassUtils.getPackageName(boolean[].class));
470 assertEquals("", ClassUtils.getPackageName(byte[].class));
471 assertEquals("", ClassUtils.getPackageName(char[].class));
472 assertEquals("", ClassUtils.getPackageName(short[].class));
473 assertEquals("", ClassUtils.getPackageName(int[].class));
474 assertEquals("", ClassUtils.getPackageName(long[].class));
475 assertEquals("", ClassUtils.getPackageName(float[].class));
476 assertEquals("", ClassUtils.getPackageName(double[].class));
477
478
479 assertEquals("java.lang", ClassUtils.getPackageName(String[][].class));
480 assertEquals("java.lang", ClassUtils.getPackageName(String[][][].class));
481 assertEquals("java.lang", ClassUtils.getPackageName(String[][][][].class));
482
483
484 final class Named {
485
486 }
487 assertEquals("org.apache.commons.lang3", ClassUtils.getPackageName(new Object() {
488
489 }.getClass()));
490 assertEquals("org.apache.commons.lang3", ClassUtils.getPackageName(Named.class));
491 }
492
493 @Test
494 public void test_getPackageName_Object() {
495 assertEquals("org.apache.commons.lang3", ClassUtils.getPackageName(new ClassUtils(), "<null>"));
496 assertEquals("org.apache.commons.lang3", ClassUtils.getPackageName(new Inner(), "<null>"));
497 assertEquals("<null>", ClassUtils.getPackageName(null, "<null>"));
498 }
499
500 @Test
501 public void test_getPackageName_String() {
502 assertEquals("org.apache.commons.lang3", ClassUtils.getPackageName(ClassUtils.class.getName()));
503 assertEquals("java.util", ClassUtils.getPackageName(Map.Entry.class.getName()));
504 assertEquals("", ClassUtils.getPackageName((String) null));
505 assertEquals("", ClassUtils.getPackageName(""));
506 }
507
508 @Test
509 public void test_getShortCanonicalName_Class() {
510 assertEquals("ClassUtils", ClassUtils.getShortCanonicalName(ClassUtils.class));
511 assertEquals("ClassUtils[]", ClassUtils.getShortCanonicalName(ClassUtils[].class));
512 assertEquals("ClassUtils[][]", ClassUtils.getShortCanonicalName(ClassUtils[][].class));
513 assertEquals("int[]", ClassUtils.getShortCanonicalName(int[].class));
514 assertEquals("int[][]", ClassUtils.getShortCanonicalName(int[][].class));
515
516
517 final class Named {
518
519 }
520 assertEquals("", ClassUtils.getShortCanonicalName(new Object() {
521
522 }.getClass()));
523
524 assertEquals("", ClassUtils.getShortCanonicalName(Named.class));
525 assertEquals("Inner", ClassUtils.getShortCanonicalName(Inner.class));
526 assertEquals(StringUtils.EMPTY, ClassUtils.getShortCanonicalName((Class<?>) null));
527 }
528
529 @Test
530 public void test_getShortCanonicalName_Object() {
531 assertEquals("<null>", ClassUtils.getShortCanonicalName(null, "<null>"));
532 assertEquals("ClassUtils", ClassUtils.getShortCanonicalName(new ClassUtils(), "<null>"));
533 assertEquals("ClassUtils[]", ClassUtils.getShortCanonicalName(new ClassUtils[0], "<null>"));
534 assertEquals("ClassUtils[][]", ClassUtils.getShortCanonicalName(new ClassUtils[0][0], "<null>"));
535 assertEquals("int[]", ClassUtils.getShortCanonicalName(new int[0], "<null>"));
536 assertEquals("int[][]", ClassUtils.getShortCanonicalName(new int[0][0], "<null>"));
537
538
539 final class Named {
540
541 }
542 assertEquals("", ClassUtils.getShortCanonicalName(new Object() {
543
544 }, "<null>"));
545 assertEquals("", ClassUtils.getShortCanonicalName(new Named(), "<null>"));
546 assertEquals("Inner", ClassUtils.getShortCanonicalName(new Inner(), "<null>"));
547 }
548
549 @Test
550 public void test_getShortCanonicalName_String() {
551 assertEquals("", ClassUtils.getShortCanonicalName((String) null));
552 assertEquals("Map.Entry", ClassUtils.getShortCanonicalName(java.util.Map.Entry.class.getName()));
553 assertEquals("Entry", ClassUtils.getShortCanonicalName(java.util.Map.Entry.class.getCanonicalName()));
554 assertEquals("ClassUtils", ClassUtils.getShortCanonicalName("org.apache.commons.lang3.ClassUtils"));
555 assertEquals("ClassUtils[]", ClassUtils.getShortCanonicalName("[Lorg.apache.commons.lang3.ClassUtils;"));
556 assertEquals("ClassUtils[][]", ClassUtils.getShortCanonicalName("[[Lorg.apache.commons.lang3.ClassUtils;"));
557 assertEquals("ClassUtils[]", ClassUtils.getShortCanonicalName("org.apache.commons.lang3.ClassUtils[]"));
558 assertEquals("ClassUtils[][]", ClassUtils.getShortCanonicalName("org.apache.commons.lang3.ClassUtils[][]"));
559 assertEquals("int[]", ClassUtils.getShortCanonicalName("[I"));
560 assertEquals("int[]", ClassUtils.getShortCanonicalName(int[].class.getCanonicalName()));
561 assertEquals("int[]", ClassUtils.getShortCanonicalName(int[].class.getName()));
562 assertEquals("int[][]", ClassUtils.getShortCanonicalName("[[I"));
563 assertEquals("int[]", ClassUtils.getShortCanonicalName("int[]"));
564 assertEquals("int[][]", ClassUtils.getShortCanonicalName("int[][]"));
565
566
567
568
569 assertEquals("int[]", int[].class.getCanonicalName());
570 assertEquals("[I", int[].class.getName());
571
572
573
574
575 assertEquals("ClassUtilsTest.6", ClassUtils.getShortCanonicalName("org.apache.commons.lang3.ClassUtilsTest$6"));
576
577 assertEquals("ClassUtilsTest.5Named", ClassUtils.getShortCanonicalName("org.apache.commons.lang3.ClassUtilsTest$5Named"));
578 assertEquals("ClassUtilsTest.Inner", ClassUtils.getShortCanonicalName("org.apache.commons.lang3.ClassUtilsTest$Inner"));
579
580 assertEquals("org.apache.commons.lang3.ClassUtilsTest$10", new org.apache.commons.lang3.ClassUtilsTest() {
581 }.getClass().getName());
582 assertNull(new org.apache.commons.lang3.ClassUtilsTest() {
583 }.getClass().getCanonicalName());
584 }
585
586 @Test
587 public void test_getShortClassName_Class() {
588 assertEquals("ClassUtils", ClassUtils.getShortClassName(ClassUtils.class));
589 assertEquals("Map.Entry", ClassUtils.getShortClassName(Map.Entry.class));
590 assertEquals("", ClassUtils.getShortClassName((Class<?>) null));
591
592
593 assertEquals("String[]", ClassUtils.getShortClassName(String[].class));
594 assertEquals("Map.Entry[]", ClassUtils.getShortClassName(Map.Entry[].class));
595
596
597 assertEquals("boolean", ClassUtils.getShortClassName(boolean.class));
598 assertEquals("byte", ClassUtils.getShortClassName(byte.class));
599 assertEquals("char", ClassUtils.getShortClassName(char.class));
600 assertEquals("short", ClassUtils.getShortClassName(short.class));
601 assertEquals("int", ClassUtils.getShortClassName(int.class));
602 assertEquals("long", ClassUtils.getShortClassName(long.class));
603 assertEquals("float", ClassUtils.getShortClassName(float.class));
604 assertEquals("double", ClassUtils.getShortClassName(double.class));
605
606
607 assertEquals("boolean[]", ClassUtils.getShortClassName(boolean[].class));
608 assertEquals("byte[]", ClassUtils.getShortClassName(byte[].class));
609 assertEquals("char[]", ClassUtils.getShortClassName(char[].class));
610 assertEquals("short[]", ClassUtils.getShortClassName(short[].class));
611 assertEquals("int[]", ClassUtils.getShortClassName(int[].class));
612 assertEquals("long[]", ClassUtils.getShortClassName(long[].class));
613 assertEquals("float[]", ClassUtils.getShortClassName(float[].class));
614 assertEquals("double[]", ClassUtils.getShortClassName(double[].class));
615
616
617 assertEquals("String[][]", ClassUtils.getShortClassName(String[][].class));
618 assertEquals("String[][][]", ClassUtils.getShortClassName(String[][][].class));
619 assertEquals("String[][][][]", ClassUtils.getShortClassName(String[][][][].class));
620
621
622 final class Named {
623
624 }
625
626 assertEquals("ClassUtilsTest.12", ClassUtils.getShortClassName(new Object() {
627
628 }.getClass()));
629
630 assertEquals("ClassUtilsTest.10Named", ClassUtils.getShortClassName(Named.class));
631 assertEquals("ClassUtilsTest.Inner", ClassUtils.getShortClassName(Inner.class));
632 }
633
634 @Test
635 public void test_getShortClassName_Object() {
636 assertEquals("ClassUtils", ClassUtils.getShortClassName(new ClassUtils(), "<null>"));
637 assertEquals("ClassUtilsTest.Inner", ClassUtils.getShortClassName(new Inner(), "<null>"));
638 assertEquals("String", ClassUtils.getShortClassName("hello", "<null>"));
639 assertEquals("<null>", ClassUtils.getShortClassName(null, "<null>"));
640
641
642 final class Named {
643
644 }
645
646 assertEquals("ClassUtilsTest.13", ClassUtils.getShortClassName(new Object() {
647
648 }, "<null>"));
649
650 assertEquals("ClassUtilsTest.11Named", ClassUtils.getShortClassName(new Named(), "<null>"));
651 assertEquals("ClassUtilsTest.Inner", ClassUtils.getShortClassName(new Inner(), "<null>"));
652 }
653
654 @Test
655 public void test_getShortClassName_String() {
656 assertEquals("ClassUtils", ClassUtils.getShortClassName(ClassUtils.class.getName()));
657 assertEquals("Map.Entry", ClassUtils.getShortClassName(Map.Entry.class.getName()));
658 assertEquals("", ClassUtils.getShortClassName((String) null));
659 assertEquals("", ClassUtils.getShortClassName(""));
660 }
661
662 @Test
663 public void test_getSimpleName_Class() {
664 assertEquals("ClassUtils", ClassUtils.getSimpleName(ClassUtils.class));
665 assertEquals("Entry", ClassUtils.getSimpleName(Map.Entry.class));
666 assertEquals("", ClassUtils.getSimpleName(null));
667
668
669 assertEquals("String[]", ClassUtils.getSimpleName(String[].class));
670 assertEquals("Entry[]", ClassUtils.getSimpleName(Map.Entry[].class));
671
672
673 assertEquals("boolean", ClassUtils.getSimpleName(boolean.class));
674 assertEquals("byte", ClassUtils.getSimpleName(byte.class));
675 assertEquals("char", ClassUtils.getSimpleName(char.class));
676 assertEquals("short", ClassUtils.getSimpleName(short.class));
677 assertEquals("int", ClassUtils.getSimpleName(int.class));
678 assertEquals("long", ClassUtils.getSimpleName(long.class));
679 assertEquals("float", ClassUtils.getSimpleName(float.class));
680 assertEquals("double", ClassUtils.getSimpleName(double.class));
681
682
683 assertEquals("boolean[]", ClassUtils.getSimpleName(boolean[].class));
684 assertEquals("byte[]", ClassUtils.getSimpleName(byte[].class));
685 assertEquals("char[]", ClassUtils.getSimpleName(char[].class));
686 assertEquals("short[]", ClassUtils.getSimpleName(short[].class));
687 assertEquals("int[]", ClassUtils.getSimpleName(int[].class));
688 assertEquals("long[]", ClassUtils.getSimpleName(long[].class));
689 assertEquals("float[]", ClassUtils.getSimpleName(float[].class));
690 assertEquals("double[]", ClassUtils.getSimpleName(double[].class));
691
692
693 assertEquals("String[][]", ClassUtils.getSimpleName(String[][].class));
694 assertEquals("String[][][]", ClassUtils.getSimpleName(String[][][].class));
695 assertEquals("String[][][][]", ClassUtils.getSimpleName(String[][][][].class));
696
697
698 final class Named {
699
700 }
701 assertEquals("", ClassUtils.getSimpleName(new Object() {
702
703 }.getClass()));
704 assertEquals("Named", ClassUtils.getSimpleName(Named.class));
705 }
706
707 @Test
708 public void test_getSimpleName_Object() {
709 assertEquals("ClassUtils", ClassUtils.getSimpleName(new ClassUtils()));
710 assertEquals("Inner", ClassUtils.getSimpleName(new Inner()));
711 assertEquals("String", ClassUtils.getSimpleName("hello"));
712 assertEquals(StringUtils.EMPTY, ClassUtils.getSimpleName(null));
713 assertEquals(StringUtils.EMPTY, ClassUtils.getSimpleName(null));
714 }
715
716 @Test
717 public void test_getSimpleName_Object_String() {
718 assertEquals("ClassUtils", ClassUtils.getSimpleName(new ClassUtils(), "<null>"));
719 assertEquals("Inner", ClassUtils.getSimpleName(new Inner(), "<null>"));
720 assertEquals("String", ClassUtils.getSimpleName("hello", "<null>"));
721 assertEquals("<null>", ClassUtils.getSimpleName(null, "<null>"));
722 assertNull(ClassUtils.getSimpleName(null, null));
723 }
724
725 @Test
726 public void test_isAssignable() {
727 assertFalse(ClassUtils.isAssignable((Class<?>) null, null));
728 assertFalse(ClassUtils.isAssignable(String.class, null));
729
730 assertTrue(ClassUtils.isAssignable(null, Object.class));
731 assertTrue(ClassUtils.isAssignable(null, Integer.class));
732 assertFalse(ClassUtils.isAssignable(null, Integer.TYPE));
733 assertTrue(ClassUtils.isAssignable(String.class, Object.class));
734 assertTrue(ClassUtils.isAssignable(String.class, String.class));
735 assertFalse(ClassUtils.isAssignable(Object.class, String.class));
736
737 assertTrue(ClassUtils.isAssignable(Integer.TYPE, Integer.class));
738 assertTrue(ClassUtils.isAssignable(Integer.TYPE, Object.class));
739 assertTrue(ClassUtils.isAssignable(Integer.class, Integer.TYPE));
740 assertTrue(ClassUtils.isAssignable(Integer.class, Object.class));
741 assertTrue(ClassUtils.isAssignable(Integer.TYPE, Integer.TYPE));
742 assertTrue(ClassUtils.isAssignable(Integer.class, Integer.class));
743 assertTrue(ClassUtils.isAssignable(Boolean.TYPE, Boolean.class));
744 assertTrue(ClassUtils.isAssignable(Boolean.TYPE, Object.class));
745 assertTrue(ClassUtils.isAssignable(Boolean.class, Boolean.TYPE));
746 assertTrue(ClassUtils.isAssignable(Boolean.class, Object.class));
747 assertTrue(ClassUtils.isAssignable(Boolean.TYPE, Boolean.TYPE));
748 assertTrue(ClassUtils.isAssignable(Boolean.class, Boolean.class));
749 }
750
751 @Test
752 public void test_isAssignable_Autoboxing() {
753 assertFalse(ClassUtils.isAssignable((Class<?>) null, null, true));
754 assertFalse(ClassUtils.isAssignable(String.class, null, true));
755
756 assertTrue(ClassUtils.isAssignable(null, Object.class, true));
757 assertTrue(ClassUtils.isAssignable(null, Integer.class, true));
758 assertFalse(ClassUtils.isAssignable(null, Integer.TYPE, true));
759 assertTrue(ClassUtils.isAssignable(String.class, Object.class, true));
760 assertTrue(ClassUtils.isAssignable(String.class, String.class, true));
761 assertFalse(ClassUtils.isAssignable(Object.class, String.class, true));
762 assertTrue(ClassUtils.isAssignable(Integer.TYPE, Integer.class, true));
763 assertTrue(ClassUtils.isAssignable(Integer.TYPE, Object.class, true));
764 assertTrue(ClassUtils.isAssignable(Integer.class, Integer.TYPE, true));
765 assertTrue(ClassUtils.isAssignable(Integer.class, Object.class, true));
766 assertTrue(ClassUtils.isAssignable(Integer.TYPE, Integer.TYPE, true));
767 assertTrue(ClassUtils.isAssignable(Integer.class, Integer.class, true));
768 assertTrue(ClassUtils.isAssignable(Boolean.TYPE, Boolean.class, true));
769 assertTrue(ClassUtils.isAssignable(Boolean.class, Boolean.TYPE, true));
770 assertTrue(ClassUtils.isAssignable(Boolean.class, Object.class, true));
771 assertTrue(ClassUtils.isAssignable(Boolean.TYPE, Boolean.TYPE, true));
772 assertTrue(ClassUtils.isAssignable(Boolean.class, Boolean.class, true));
773 }
774
775 @Test
776 public void test_isAssignable_ClassArray_ClassArray() {
777 final Class<?>[] array2 = new Class[] {Object.class, Object.class};
778 final Class<?>[] array1 = new Class[] {Object.class};
779 final Class<?>[] array1s = new Class[] {String.class};
780 final Class<?>[] array0 = new Class[] {};
781 final Class<?>[] arrayPrimitives = {Integer.TYPE, Boolean.TYPE};
782 final Class<?>[] arrayWrappers = {Integer.class, Boolean.class};
783
784 assertFalse(ClassUtils.isAssignable(array1, array2));
785 assertFalse(ClassUtils.isAssignable(null, array2));
786 assertTrue(ClassUtils.isAssignable(null, array0));
787 assertTrue(ClassUtils.isAssignable(array0, array0));
788 assertTrue(ClassUtils.isAssignable(array0, (Class<?>[]) null));
789 assertTrue(ClassUtils.isAssignable(null, (Class<?>[]) null));
790
791 assertFalse(ClassUtils.isAssignable(array1, array1s));
792 assertTrue(ClassUtils.isAssignable(array1s, array1s));
793 assertTrue(ClassUtils.isAssignable(array1s, array1));
794
795 assertTrue(ClassUtils.isAssignable(arrayPrimitives, arrayWrappers));
796 assertTrue(ClassUtils.isAssignable(arrayWrappers, arrayPrimitives));
797 assertFalse(ClassUtils.isAssignable(arrayPrimitives, array1));
798 assertFalse(ClassUtils.isAssignable(arrayWrappers, array1));
799 assertTrue(ClassUtils.isAssignable(arrayPrimitives, array2));
800 assertTrue(ClassUtils.isAssignable(arrayWrappers, array2));
801 }
802
803 @Test
804 public void test_isAssignable_ClassArray_ClassArray_Autoboxing() {
805 final Class<?>[] array2 = new Class[] {Object.class, Object.class};
806 final Class<?>[] array1 = new Class[] {Object.class};
807 final Class<?>[] array1s = new Class[] {String.class};
808 final Class<?>[] array0 = new Class[] {};
809 final Class<?>[] arrayPrimitives = {Integer.TYPE, Boolean.TYPE};
810 final Class<?>[] arrayWrappers = {Integer.class, Boolean.class};
811
812 assertFalse(ClassUtils.isAssignable(array1, array2, true));
813 assertFalse(ClassUtils.isAssignable(null, array2, true));
814 assertTrue(ClassUtils.isAssignable(null, array0, true));
815 assertTrue(ClassUtils.isAssignable(array0, array0, true));
816 assertTrue(ClassUtils.isAssignable(array0, null, true));
817 assertTrue(ClassUtils.isAssignable((Class[]) null, null, true));
818
819 assertFalse(ClassUtils.isAssignable(array1, array1s, true));
820 assertTrue(ClassUtils.isAssignable(array1s, array1s, true));
821 assertTrue(ClassUtils.isAssignable(array1s, array1, true));
822
823 assertTrue(ClassUtils.isAssignable(arrayPrimitives, arrayWrappers, true));
824 assertTrue(ClassUtils.isAssignable(arrayWrappers, arrayPrimitives, true));
825 assertFalse(ClassUtils.isAssignable(arrayPrimitives, array1, true));
826 assertFalse(ClassUtils.isAssignable(arrayWrappers, array1, true));
827 assertTrue(ClassUtils.isAssignable(arrayPrimitives, array2, true));
828 assertTrue(ClassUtils.isAssignable(arrayWrappers, array2, true));
829 }
830
831 @Test
832 public void test_isAssignable_ClassArray_ClassArray_NoAutoboxing() {
833 final Class<?>[] array2 = new Class[] {Object.class, Object.class};
834 final Class<?>[] array1 = new Class[] {Object.class};
835 final Class<?>[] array1s = new Class[] {String.class};
836 final Class<?>[] array0 = new Class[] {};
837 final Class<?>[] arrayPrimitives = {Integer.TYPE, Boolean.TYPE};
838 final Class<?>[] arrayWrappers = {Integer.class, Boolean.class};
839
840 assertFalse(ClassUtils.isAssignable(array1, array2, false));
841 assertFalse(ClassUtils.isAssignable(null, array2, false));
842 assertTrue(ClassUtils.isAssignable(null, array0, false));
843 assertTrue(ClassUtils.isAssignable(array0, array0, false));
844 assertTrue(ClassUtils.isAssignable(array0, null, false));
845 assertTrue(ClassUtils.isAssignable((Class[]) null, null, false));
846
847 assertFalse(ClassUtils.isAssignable(array1, array1s, false));
848 assertTrue(ClassUtils.isAssignable(array1s, array1s, false));
849 assertTrue(ClassUtils.isAssignable(array1s, array1, false));
850
851 assertFalse(ClassUtils.isAssignable(arrayPrimitives, arrayWrappers, false));
852 assertFalse(ClassUtils.isAssignable(arrayWrappers, arrayPrimitives, false));
853 assertFalse(ClassUtils.isAssignable(arrayPrimitives, array1, false));
854 assertFalse(ClassUtils.isAssignable(arrayWrappers, array1, false));
855 assertTrue(ClassUtils.isAssignable(arrayWrappers, array2, false));
856 assertFalse(ClassUtils.isAssignable(arrayPrimitives, array2, false));
857 }
858
859 @Test
860 public void test_isAssignable_DefaultUnboxing_Widening() {
861
862 assertFalse(ClassUtils.isAssignable(Byte.class, Character.TYPE), "byte -> char");
863 assertTrue(ClassUtils.isAssignable(Byte.class, Byte.TYPE), "byte -> byte");
864 assertTrue(ClassUtils.isAssignable(Byte.class, Short.TYPE), "byte -> short");
865 assertTrue(ClassUtils.isAssignable(Byte.class, Integer.TYPE), "byte -> int");
866 assertTrue(ClassUtils.isAssignable(Byte.class, Long.TYPE), "byte -> long");
867 assertTrue(ClassUtils.isAssignable(Byte.class, Float.TYPE), "byte -> float");
868 assertTrue(ClassUtils.isAssignable(Byte.class, Double.TYPE), "byte -> double");
869 assertFalse(ClassUtils.isAssignable(Byte.class, Boolean.TYPE), "byte -> boolean");
870
871
872 assertFalse(ClassUtils.isAssignable(Short.class, Character.TYPE), "short -> char");
873 assertFalse(ClassUtils.isAssignable(Short.class, Byte.TYPE), "short -> byte");
874 assertTrue(ClassUtils.isAssignable(Short.class, Short.TYPE), "short -> short");
875 assertTrue(ClassUtils.isAssignable(Short.class, Integer.TYPE), "short -> int");
876 assertTrue(ClassUtils.isAssignable(Short.class, Long.TYPE), "short -> long");
877 assertTrue(ClassUtils.isAssignable(Short.class, Float.TYPE), "short -> float");
878 assertTrue(ClassUtils.isAssignable(Short.class, Double.TYPE), "short -> double");
879 assertFalse(ClassUtils.isAssignable(Short.class, Boolean.TYPE), "short -> boolean");
880
881
882 assertTrue(ClassUtils.isAssignable(Character.class, Character.TYPE), "char -> char");
883 assertFalse(ClassUtils.isAssignable(Character.class, Byte.TYPE), "char -> byte");
884 assertFalse(ClassUtils.isAssignable(Character.class, Short.TYPE), "char -> short");
885 assertTrue(ClassUtils.isAssignable(Character.class, Integer.TYPE), "char -> int");
886 assertTrue(ClassUtils.isAssignable(Character.class, Long.TYPE), "char -> long");
887 assertTrue(ClassUtils.isAssignable(Character.class, Float.TYPE), "char -> float");
888 assertTrue(ClassUtils.isAssignable(Character.class, Double.TYPE), "char -> double");
889 assertFalse(ClassUtils.isAssignable(Character.class, Boolean.TYPE), "char -> boolean");
890
891
892 assertFalse(ClassUtils.isAssignable(Integer.class, Character.TYPE), "int -> char");
893 assertFalse(ClassUtils.isAssignable(Integer.class, Byte.TYPE), "int -> byte");
894 assertFalse(ClassUtils.isAssignable(Integer.class, Short.TYPE), "int -> short");
895 assertTrue(ClassUtils.isAssignable(Integer.class, Integer.TYPE), "int -> int");
896 assertTrue(ClassUtils.isAssignable(Integer.class, Long.TYPE), "int -> long");
897 assertTrue(ClassUtils.isAssignable(Integer.class, Float.TYPE), "int -> float");
898 assertTrue(ClassUtils.isAssignable(Integer.class, Double.TYPE), "int -> double");
899 assertFalse(ClassUtils.isAssignable(Integer.class, Boolean.TYPE), "int -> boolean");
900
901
902 assertFalse(ClassUtils.isAssignable(Long.class, Character.TYPE), "long -> char");
903 assertFalse(ClassUtils.isAssignable(Long.class, Byte.TYPE), "long -> byte");
904 assertFalse(ClassUtils.isAssignable(Long.class, Short.TYPE), "long -> short");
905 assertFalse(ClassUtils.isAssignable(Long.class, Integer.TYPE), "long -> int");
906 assertTrue(ClassUtils.isAssignable(Long.class, Long.TYPE), "long -> long");
907 assertTrue(ClassUtils.isAssignable(Long.class, Float.TYPE), "long -> float");
908 assertTrue(ClassUtils.isAssignable(Long.class, Double.TYPE), "long -> double");
909 assertFalse(ClassUtils.isAssignable(Long.class, Boolean.TYPE), "long -> boolean");
910
911
912 assertFalse(ClassUtils.isAssignable(Float.class, Character.TYPE), "float -> char");
913 assertFalse(ClassUtils.isAssignable(Float.class, Byte.TYPE), "float -> byte");
914 assertFalse(ClassUtils.isAssignable(Float.class, Short.TYPE), "float -> short");
915 assertFalse(ClassUtils.isAssignable(Float.class, Integer.TYPE), "float -> int");
916 assertFalse(ClassUtils.isAssignable(Float.class, Long.TYPE), "float -> long");
917 assertTrue(ClassUtils.isAssignable(Float.class, Float.TYPE), "float -> float");
918 assertTrue(ClassUtils.isAssignable(Float.class, Double.TYPE), "float -> double");
919 assertFalse(ClassUtils.isAssignable(Float.class, Boolean.TYPE), "float -> boolean");
920
921
922 assertFalse(ClassUtils.isAssignable(Double.class, Character.TYPE), "double -> char");
923 assertFalse(ClassUtils.isAssignable(Double.class, Byte.TYPE), "double -> byte");
924 assertFalse(ClassUtils.isAssignable(Double.class, Short.TYPE), "double -> short");
925 assertFalse(ClassUtils.isAssignable(Double.class, Integer.TYPE), "double -> int");
926 assertFalse(ClassUtils.isAssignable(Double.class, Long.TYPE), "double -> long");
927 assertFalse(ClassUtils.isAssignable(Double.class, Float.TYPE), "double -> float");
928 assertTrue(ClassUtils.isAssignable(Double.class, Double.TYPE), "double -> double");
929 assertFalse(ClassUtils.isAssignable(Double.class, Boolean.TYPE), "double -> boolean");
930
931
932 assertFalse(ClassUtils.isAssignable(Boolean.class, Character.TYPE), "boolean -> char");
933 assertFalse(ClassUtils.isAssignable(Boolean.class, Byte.TYPE), "boolean -> byte");
934 assertFalse(ClassUtils.isAssignable(Boolean.class, Short.TYPE), "boolean -> short");
935 assertFalse(ClassUtils.isAssignable(Boolean.class, Integer.TYPE), "boolean -> int");
936 assertFalse(ClassUtils.isAssignable(Boolean.class, Long.TYPE), "boolean -> long");
937 assertFalse(ClassUtils.isAssignable(Boolean.class, Float.TYPE), "boolean -> float");
938 assertFalse(ClassUtils.isAssignable(Boolean.class, Double.TYPE), "boolean -> double");
939 assertTrue(ClassUtils.isAssignable(Boolean.class, Boolean.TYPE), "boolean -> boolean");
940 }
941
942 @Test
943 public void test_isAssignable_NoAutoboxing() {
944 assertFalse(ClassUtils.isAssignable((Class<?>) null, null, false));
945 assertFalse(ClassUtils.isAssignable(String.class, null, false));
946
947 assertTrue(ClassUtils.isAssignable(null, Object.class, false));
948 assertTrue(ClassUtils.isAssignable(null, Integer.class, false));
949 assertFalse(ClassUtils.isAssignable(null, Integer.TYPE, false));
950 assertTrue(ClassUtils.isAssignable(String.class, Object.class, false));
951 assertTrue(ClassUtils.isAssignable(String.class, String.class, false));
952 assertFalse(ClassUtils.isAssignable(Object.class, String.class, false));
953 assertFalse(ClassUtils.isAssignable(Integer.TYPE, Integer.class, false));
954 assertFalse(ClassUtils.isAssignable(Integer.TYPE, Object.class, false));
955 assertFalse(ClassUtils.isAssignable(Integer.class, Integer.TYPE, false));
956 assertTrue(ClassUtils.isAssignable(Integer.TYPE, Integer.TYPE, false));
957 assertTrue(ClassUtils.isAssignable(Integer.class, Integer.class, false));
958 assertFalse(ClassUtils.isAssignable(Boolean.TYPE, Boolean.class, false));
959 assertFalse(ClassUtils.isAssignable(Boolean.TYPE, Object.class, false));
960 assertFalse(ClassUtils.isAssignable(Boolean.class, Boolean.TYPE, false));
961 assertTrue(ClassUtils.isAssignable(Boolean.class, Object.class, false));
962 assertTrue(ClassUtils.isAssignable(Boolean.TYPE, Boolean.TYPE, false));
963 assertTrue(ClassUtils.isAssignable(Boolean.class, Boolean.class, false));
964 }
965
966 @Test
967 public void test_isAssignable_Unboxing_Widening() {
968
969 assertFalse(ClassUtils.isAssignable(Byte.class, Character.TYPE, true), "byte -> char");
970 assertTrue(ClassUtils.isAssignable(Byte.class, Byte.TYPE, true), "byte -> byte");
971 assertTrue(ClassUtils.isAssignable(Byte.class, Short.TYPE, true), "byte -> short");
972 assertTrue(ClassUtils.isAssignable(Byte.class, Integer.TYPE, true), "byte -> int");
973 assertTrue(ClassUtils.isAssignable(Byte.class, Long.TYPE, true), "byte -> long");
974 assertTrue(ClassUtils.isAssignable(Byte.class, Float.TYPE, true), "byte -> float");
975 assertTrue(ClassUtils.isAssignable(Byte.class, Double.TYPE, true), "byte -> double");
976 assertFalse(ClassUtils.isAssignable(Byte.class, Boolean.TYPE, true), "byte -> boolean");
977
978
979 assertFalse(ClassUtils.isAssignable(Short.class, Character.TYPE, true), "short -> char");
980 assertFalse(ClassUtils.isAssignable(Short.class, Byte.TYPE, true), "short -> byte");
981 assertTrue(ClassUtils.isAssignable(Short.class, Short.TYPE, true), "short -> short");
982 assertTrue(ClassUtils.isAssignable(Short.class, Integer.TYPE, true), "short -> int");
983 assertTrue(ClassUtils.isAssignable(Short.class, Long.TYPE, true), "short -> long");
984 assertTrue(ClassUtils.isAssignable(Short.class, Float.TYPE, true), "short -> float");
985 assertTrue(ClassUtils.isAssignable(Short.class, Double.TYPE, true), "short -> double");
986 assertFalse(ClassUtils.isAssignable(Short.class, Boolean.TYPE, true), "short -> boolean");
987
988
989 assertTrue(ClassUtils.isAssignable(Character.class, Character.TYPE, true), "char -> char");
990 assertFalse(ClassUtils.isAssignable(Character.class, Byte.TYPE, true), "char -> byte");
991 assertFalse(ClassUtils.isAssignable(Character.class, Short.TYPE, true), "char -> short");
992 assertTrue(ClassUtils.isAssignable(Character.class, Integer.TYPE, true), "char -> int");
993 assertTrue(ClassUtils.isAssignable(Character.class, Long.TYPE, true), "char -> long");
994 assertTrue(ClassUtils.isAssignable(Character.class, Float.TYPE, true), "char -> float");
995 assertTrue(ClassUtils.isAssignable(Character.class, Double.TYPE, true), "char -> double");
996 assertFalse(ClassUtils.isAssignable(Character.class, Boolean.TYPE, true), "char -> boolean");
997
998
999 assertFalse(ClassUtils.isAssignable(Integer.class, Character.TYPE, true), "int -> char");
1000 assertFalse(ClassUtils.isAssignable(Integer.class, Byte.TYPE, true), "int -> byte");
1001 assertFalse(ClassUtils.isAssignable(Integer.class, Short.TYPE, true), "int -> short");
1002 assertTrue(ClassUtils.isAssignable(Integer.class, Integer.TYPE, true), "int -> int");
1003 assertTrue(ClassUtils.isAssignable(Integer.class, Long.TYPE, true), "int -> long");
1004 assertTrue(ClassUtils.isAssignable(Integer.class, Float.TYPE, true), "int -> float");
1005 assertTrue(ClassUtils.isAssignable(Integer.class, Double.TYPE, true), "int -> double");
1006 assertFalse(ClassUtils.isAssignable(Integer.class, Boolean.TYPE, true), "int -> boolean");
1007
1008
1009 assertFalse(ClassUtils.isAssignable(Long.class, Character.TYPE, true), "long -> char");
1010 assertFalse(ClassUtils.isAssignable(Long.class, Byte.TYPE, true), "long -> byte");
1011 assertFalse(ClassUtils.isAssignable(Long.class, Short.TYPE, true), "long -> short");
1012 assertFalse(ClassUtils.isAssignable(Long.class, Integer.TYPE, true), "long -> int");
1013 assertTrue(ClassUtils.isAssignable(Long.class, Long.TYPE, true), "long -> long");
1014 assertTrue(ClassUtils.isAssignable(Long.class, Float.TYPE, true), "long -> float");
1015 assertTrue(ClassUtils.isAssignable(Long.class, Double.TYPE, true), "long -> double");
1016 assertFalse(ClassUtils.isAssignable(Long.class, Boolean.TYPE, true), "long -> boolean");
1017
1018
1019 assertFalse(ClassUtils.isAssignable(Float.class, Character.TYPE, true), "float -> char");
1020 assertFalse(ClassUtils.isAssignable(Float.class, Byte.TYPE, true), "float -> byte");
1021 assertFalse(ClassUtils.isAssignable(Float.class, Short.TYPE, true), "float -> short");
1022 assertFalse(ClassUtils.isAssignable(Float.class, Integer.TYPE, true), "float -> int");
1023 assertFalse(ClassUtils.isAssignable(Float.class, Long.TYPE, true), "float -> long");
1024 assertTrue(ClassUtils.isAssignable(Float.class, Float.TYPE, true), "float -> float");
1025 assertTrue(ClassUtils.isAssignable(Float.class, Double.TYPE, true), "float -> double");
1026 assertFalse(ClassUtils.isAssignable(Float.class, Boolean.TYPE, true), "float -> boolean");
1027
1028
1029 assertFalse(ClassUtils.isAssignable(Double.class, Character.TYPE, true), "double -> char");
1030 assertFalse(ClassUtils.isAssignable(Double.class, Byte.TYPE, true), "double -> byte");
1031 assertFalse(ClassUtils.isAssignable(Double.class, Short.TYPE, true), "double -> short");
1032 assertFalse(ClassUtils.isAssignable(Double.class, Integer.TYPE, true), "double -> int");
1033 assertFalse(ClassUtils.isAssignable(Double.class, Long.TYPE, true), "double -> long");
1034 assertFalse(ClassUtils.isAssignable(Double.class, Float.TYPE, true), "double -> float");
1035 assertTrue(ClassUtils.isAssignable(Double.class, Double.TYPE, true), "double -> double");
1036 assertFalse(ClassUtils.isAssignable(Double.class, Boolean.TYPE, true), "double -> boolean");
1037
1038
1039 assertFalse(ClassUtils.isAssignable(Boolean.class, Character.TYPE, true), "boolean -> char");
1040 assertFalse(ClassUtils.isAssignable(Boolean.class, Byte.TYPE, true), "boolean -> byte");
1041 assertFalse(ClassUtils.isAssignable(Boolean.class, Short.TYPE, true), "boolean -> short");
1042 assertFalse(ClassUtils.isAssignable(Boolean.class, Integer.TYPE, true), "boolean -> int");
1043 assertFalse(ClassUtils.isAssignable(Boolean.class, Long.TYPE, true), "boolean -> long");
1044 assertFalse(ClassUtils.isAssignable(Boolean.class, Float.TYPE, true), "boolean -> float");
1045 assertFalse(ClassUtils.isAssignable(Boolean.class, Double.TYPE, true), "boolean -> double");
1046 assertTrue(ClassUtils.isAssignable(Boolean.class, Boolean.TYPE, true), "boolean -> boolean");
1047 }
1048
1049 @Test
1050 public void test_isAssignable_Widening() {
1051
1052 assertFalse(ClassUtils.isAssignable(Byte.TYPE, Character.TYPE), "byte -> char");
1053 assertTrue(ClassUtils.isAssignable(Byte.TYPE, Byte.TYPE), "byte -> byte");
1054 assertTrue(ClassUtils.isAssignable(Byte.TYPE, Short.TYPE), "byte -> short");
1055 assertTrue(ClassUtils.isAssignable(Byte.TYPE, Integer.TYPE), "byte -> int");
1056 assertTrue(ClassUtils.isAssignable(Byte.TYPE, Long.TYPE), "byte -> long");
1057 assertTrue(ClassUtils.isAssignable(Byte.TYPE, Float.TYPE), "byte -> float");
1058 assertTrue(ClassUtils.isAssignable(Byte.TYPE, Double.TYPE), "byte -> double");
1059 assertFalse(ClassUtils.isAssignable(Byte.TYPE, Boolean.TYPE), "byte -> boolean");
1060
1061
1062 assertFalse(ClassUtils.isAssignable(Short.TYPE, Character.TYPE), "short -> char");
1063 assertFalse(ClassUtils.isAssignable(Short.TYPE, Byte.TYPE), "short -> byte");
1064 assertTrue(ClassUtils.isAssignable(Short.TYPE, Short.TYPE), "short -> short");
1065 assertTrue(ClassUtils.isAssignable(Short.TYPE, Integer.TYPE), "short -> int");
1066 assertTrue(ClassUtils.isAssignable(Short.TYPE, Long.TYPE), "short -> long");
1067 assertTrue(ClassUtils.isAssignable(Short.TYPE, Float.TYPE), "short -> float");
1068 assertTrue(ClassUtils.isAssignable(Short.TYPE, Double.TYPE), "short -> double");
1069 assertFalse(ClassUtils.isAssignable(Short.TYPE, Boolean.TYPE), "short -> boolean");
1070
1071
1072 assertTrue(ClassUtils.isAssignable(Character.TYPE, Character.TYPE), "char -> char");
1073 assertFalse(ClassUtils.isAssignable(Character.TYPE, Byte.TYPE), "char -> byte");
1074 assertFalse(ClassUtils.isAssignable(Character.TYPE, Short.TYPE), "char -> short");
1075 assertTrue(ClassUtils.isAssignable(Character.TYPE, Integer.TYPE), "char -> int");
1076 assertTrue(ClassUtils.isAssignable(Character.TYPE, Long.TYPE), "char -> long");
1077 assertTrue(ClassUtils.isAssignable(Character.TYPE, Float.TYPE), "char -> float");
1078 assertTrue(ClassUtils.isAssignable(Character.TYPE, Double.TYPE), "char -> double");
1079 assertFalse(ClassUtils.isAssignable(Character.TYPE, Boolean.TYPE), "char -> boolean");
1080
1081
1082 assertFalse(ClassUtils.isAssignable(Integer.TYPE, Character.TYPE), "int -> char");
1083 assertFalse(ClassUtils.isAssignable(Integer.TYPE, Byte.TYPE), "int -> byte");
1084 assertFalse(ClassUtils.isAssignable(Integer.TYPE, Short.TYPE), "int -> short");
1085 assertTrue(ClassUtils.isAssignable(Integer.TYPE, Integer.TYPE), "int -> int");
1086 assertTrue(ClassUtils.isAssignable(Integer.TYPE, Long.TYPE), "int -> long");
1087 assertTrue(ClassUtils.isAssignable(Integer.TYPE, Float.TYPE), "int -> float");
1088 assertTrue(ClassUtils.isAssignable(Integer.TYPE, Double.TYPE), "int -> double");
1089 assertFalse(ClassUtils.isAssignable(Integer.TYPE, Boolean.TYPE), "int -> boolean");
1090
1091
1092 assertFalse(ClassUtils.isAssignable(Long.TYPE, Character.TYPE), "long -> char");
1093 assertFalse(ClassUtils.isAssignable(Long.TYPE, Byte.TYPE), "long -> byte");
1094 assertFalse(ClassUtils.isAssignable(Long.TYPE, Short.TYPE), "long -> short");
1095 assertFalse(ClassUtils.isAssignable(Long.TYPE, Integer.TYPE), "long -> int");
1096 assertTrue(ClassUtils.isAssignable(Long.TYPE, Long.TYPE), "long -> long");
1097 assertTrue(ClassUtils.isAssignable(Long.TYPE, Float.TYPE), "long -> float");
1098 assertTrue(ClassUtils.isAssignable(Long.TYPE, Double.TYPE), "long -> double");
1099 assertFalse(ClassUtils.isAssignable(Long.TYPE, Boolean.TYPE), "long -> boolean");
1100
1101
1102 assertFalse(ClassUtils.isAssignable(Float.TYPE, Character.TYPE), "float -> char");
1103 assertFalse(ClassUtils.isAssignable(Float.TYPE, Byte.TYPE), "float -> byte");
1104 assertFalse(ClassUtils.isAssignable(Float.TYPE, Short.TYPE), "float -> short");
1105 assertFalse(ClassUtils.isAssignable(Float.TYPE, Integer.TYPE), "float -> int");
1106 assertFalse(ClassUtils.isAssignable(Float.TYPE, Long.TYPE), "float -> long");
1107 assertTrue(ClassUtils.isAssignable(Float.TYPE, Float.TYPE), "float -> float");
1108 assertTrue(ClassUtils.isAssignable(Float.TYPE, Double.TYPE), "float -> double");
1109 assertFalse(ClassUtils.isAssignable(Float.TYPE, Boolean.TYPE), "float -> boolean");
1110
1111
1112 assertFalse(ClassUtils.isAssignable(Double.TYPE, Character.TYPE), "double -> char");
1113 assertFalse(ClassUtils.isAssignable(Double.TYPE, Byte.TYPE), "double -> byte");
1114 assertFalse(ClassUtils.isAssignable(Double.TYPE, Short.TYPE), "double -> short");
1115 assertFalse(ClassUtils.isAssignable(Double.TYPE, Integer.TYPE), "double -> int");
1116 assertFalse(ClassUtils.isAssignable(Double.TYPE, Long.TYPE), "double -> long");
1117 assertFalse(ClassUtils.isAssignable(Double.TYPE, Float.TYPE), "double -> float");
1118 assertTrue(ClassUtils.isAssignable(Double.TYPE, Double.TYPE), "double -> double");
1119 assertFalse(ClassUtils.isAssignable(Double.TYPE, Boolean.TYPE), "double -> boolean");
1120
1121
1122 assertFalse(ClassUtils.isAssignable(Boolean.TYPE, Character.TYPE), "boolean -> char");
1123 assertFalse(ClassUtils.isAssignable(Boolean.TYPE, Byte.TYPE), "boolean -> byte");
1124 assertFalse(ClassUtils.isAssignable(Boolean.TYPE, Short.TYPE), "boolean -> short");
1125 assertFalse(ClassUtils.isAssignable(Boolean.TYPE, Integer.TYPE), "boolean -> int");
1126 assertFalse(ClassUtils.isAssignable(Boolean.TYPE, Long.TYPE), "boolean -> long");
1127 assertFalse(ClassUtils.isAssignable(Boolean.TYPE, Float.TYPE), "boolean -> float");
1128 assertFalse(ClassUtils.isAssignable(Boolean.TYPE, Double.TYPE), "boolean -> double");
1129 assertTrue(ClassUtils.isAssignable(Boolean.TYPE, Boolean.TYPE), "boolean -> boolean");
1130 }
1131
1132 @Test
1133 public void test_isInnerClass_Class() {
1134 assertTrue(ClassUtils.isInnerClass(Inner.class));
1135 assertTrue(ClassUtils.isInnerClass(Map.Entry.class));
1136 assertTrue(ClassUtils.isInnerClass(new Cloneable() {
1137
1138 }.getClass()));
1139 assertFalse(ClassUtils.isInnerClass(this.getClass()));
1140 assertFalse(ClassUtils.isInnerClass(String.class));
1141 assertFalse(ClassUtils.isInnerClass(null));
1142 }
1143
1144 @Test
1145 public void testComparable() {
1146 final TreeMap<Class<?>, String> map = new TreeMap<>(ClassUtils.comparator());
1147 map.put(String.class, "lastEntry");
1148 map.toString();
1149 map.put(Character.class, "firstEntry");
1150 map.toString();
1151 assertEquals("firstEntry", map.firstEntry().getValue());
1152 assertEquals(Character.class, map.firstEntry().getKey());
1153
1154 assertEquals("lastEntry", map.lastEntry().getValue());
1155 assertEquals(String.class, map.lastEntry().getKey());
1156
1157 map.put(null, "null");
1158 map.toString();
1159 assertEquals("null", map.get(null));
1160 }
1161
1162 @Test
1163 public void testConstructor() {
1164 assertNotNull(new ClassUtils());
1165 final Constructor<?>[] cons = ClassUtils.class.getDeclaredConstructors();
1166 assertEquals(1, cons.length);
1167 assertTrue(Modifier.isPublic(cons[0].getModifiers()));
1168 assertTrue(Modifier.isPublic(ClassUtils.class.getModifiers()));
1169 assertFalse(Modifier.isFinal(ClassUtils.class.getModifiers()));
1170 }
1171
1172 @Test
1173 public void testGetClassByNormalNameArrays() throws ClassNotFoundException {
1174 assertEquals(int[].class, ClassUtils.getClass("int[]"));
1175 assertEquals(long[].class, ClassUtils.getClass("long[]"));
1176 assertEquals(short[].class, ClassUtils.getClass("short[]"));
1177 assertEquals(byte[].class, ClassUtils.getClass("byte[]"));
1178 assertEquals(char[].class, ClassUtils.getClass("char[]"));
1179 assertEquals(float[].class, ClassUtils.getClass("float[]"));
1180 assertEquals(double[].class, ClassUtils.getClass("double[]"));
1181 assertEquals(boolean[].class, ClassUtils.getClass("boolean[]"));
1182 assertEquals(String[].class, ClassUtils.getClass("java.lang.String[]"));
1183 assertEquals(java.util.Map.Entry[].class, ClassUtils.getClass("java.util.Map.Entry[]"));
1184 assertEquals(java.util.Map.Entry[].class, ClassUtils.getClass("java.util.Map$Entry[]"));
1185 assertEquals(java.util.Map.Entry[].class, ClassUtils.getClass("[Ljava.util.Map.Entry;"));
1186 assertEquals(java.util.Map.Entry[].class, ClassUtils.getClass("[Ljava.util.Map$Entry;"));
1187 }
1188
1189 @Test
1190 public void testGetClassByNormalNameArrays2D() throws ClassNotFoundException {
1191 assertEquals(int[][].class, ClassUtils.getClass("int[][]"));
1192 assertEquals(long[][].class, ClassUtils.getClass("long[][]"));
1193 assertEquals(short[][].class, ClassUtils.getClass("short[][]"));
1194 assertEquals(byte[][].class, ClassUtils.getClass("byte[][]"));
1195 assertEquals(char[][].class, ClassUtils.getClass("char[][]"));
1196 assertEquals(float[][].class, ClassUtils.getClass("float[][]"));
1197 assertEquals(double[][].class, ClassUtils.getClass("double[][]"));
1198 assertEquals(boolean[][].class, ClassUtils.getClass("boolean[][]"));
1199 assertEquals(String[][].class, ClassUtils.getClass("java.lang.String[][]"));
1200 }
1201
1202 @Test
1203 public void testGetClassClassNotFound() throws Exception {
1204 assertGetClassThrowsClassNotFound("bool");
1205 assertGetClassThrowsClassNotFound("bool[]");
1206 assertGetClassThrowsClassNotFound("integer[]");
1207 }
1208
1209 @Test
1210 public void testGetClassInvalidArguments() throws Exception {
1211 assertGetClassThrowsNullPointerException(null);
1212 assertGetClassThrowsClassNotFound("[][][]");
1213 assertGetClassThrowsClassNotFound("[[]");
1214 assertGetClassThrowsClassNotFound("[");
1215 assertGetClassThrowsClassNotFound("java.lang.String][");
1216 assertGetClassThrowsClassNotFound(".hello.world");
1217 assertGetClassThrowsClassNotFound("hello..world");
1218 }
1219
1220 @Test
1221 public void testGetClassRawPrimitives() 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(void.class, ClassUtils.getClass("void"));
1231 }
1232
1233 @Test
1234 public void testGetClassWithArrayClasses() throws Exception {
1235 assertGetClassReturnsClass(String[].class);
1236 assertGetClassReturnsClass(int[].class);
1237 assertGetClassReturnsClass(long[].class);
1238 assertGetClassReturnsClass(short[].class);
1239 assertGetClassReturnsClass(byte[].class);
1240 assertGetClassReturnsClass(char[].class);
1241 assertGetClassReturnsClass(float[].class);
1242 assertGetClassReturnsClass(double[].class);
1243 assertGetClassReturnsClass(boolean[].class);
1244 }
1245
1246 @Test
1247 public void testGetClassWithArrayClasses2D() throws Exception {
1248 assertGetClassReturnsClass(String[][].class);
1249 assertGetClassReturnsClass(int[][].class);
1250 assertGetClassReturnsClass(long[][].class);
1251 assertGetClassReturnsClass(short[][].class);
1252 assertGetClassReturnsClass(byte[][].class);
1253 assertGetClassReturnsClass(char[][].class);
1254 assertGetClassReturnsClass(float[][].class);
1255 assertGetClassReturnsClass(double[][].class);
1256 assertGetClassReturnsClass(boolean[][].class);
1257 }
1258
1259 @Test
1260 public void testGetComponentType() {
1261 final CX[] newArray = {};
1262 @SuppressWarnings("unchecked")
1263 final Class<CX[]> classCxArray = (Class<CX[]>) newArray.getClass();
1264
1265 final Class<CX> componentType = ClassUtils.getComponentType(classCxArray);
1266 assertEquals(CX.class, componentType);
1267 assertNull(ClassUtils.getComponentType(null));
1268 }
1269
1270 @Test
1271 public void testGetInnerClass() throws ClassNotFoundException {
1272 assertEquals(Inner.DeeplyNested.class, ClassUtils.getClass("org.apache.commons.lang3.ClassUtilsTest.Inner.DeeplyNested"));
1273 assertEquals(Inner.DeeplyNested.class, ClassUtils.getClass("org.apache.commons.lang3.ClassUtilsTest.Inner$DeeplyNested"));
1274 assertEquals(Inner.DeeplyNested.class, ClassUtils.getClass("org.apache.commons.lang3.ClassUtilsTest$Inner$DeeplyNested"));
1275 assertEquals(Inner.DeeplyNested.class, ClassUtils.getClass("org.apache.commons.lang3.ClassUtilsTest$Inner.DeeplyNested"));
1276
1277 assertEquals(Inner.DeeplyNested.class, ClassUtils.getClass("org.apache.commons.lang3.ClassUtilsTest.Inner.DeeplyNested", true));
1278 assertEquals(Inner.DeeplyNested.class, ClassUtils.getClass("org.apache.commons.lang3.ClassUtilsTest.Inner$DeeplyNested", true));
1279 assertEquals(Inner.DeeplyNested.class, ClassUtils.getClass("org.apache.commons.lang3.ClassUtilsTest$Inner$DeeplyNested", true));
1280 assertEquals(Inner.DeeplyNested.class, ClassUtils.getClass("org.apache.commons.lang3.ClassUtilsTest$Inner.DeeplyNested", true));
1281
1282 final ClassLoader classLoader = Inner.DeeplyNested.class.getClassLoader();
1283 assertEquals(Inner.DeeplyNested.class, ClassUtils.getClass(classLoader, "org.apache.commons.lang3.ClassUtilsTest.Inner.DeeplyNested"));
1284 assertEquals(Inner.DeeplyNested.class, ClassUtils.getClass(classLoader, "org.apache.commons.lang3.ClassUtilsTest.Inner$DeeplyNested"));
1285 assertEquals(Inner.DeeplyNested.class, ClassUtils.getClass(classLoader, "org.apache.commons.lang3.ClassUtilsTest$Inner$DeeplyNested"));
1286 assertEquals(Inner.DeeplyNested.class, ClassUtils.getClass(classLoader, "org.apache.commons.lang3.ClassUtilsTest$Inner.DeeplyNested"));
1287
1288 }
1289
1290 @Test
1291 public void testGetPublicMethod() throws Exception {
1292
1293 final Set<?> set = Collections.unmodifiableSet(new HashSet<>());
1294 final Method isEmptyMethod = ClassUtils.getPublicMethod(set.getClass(), "isEmpty");
1295 assertTrue(Modifier.isPublic(isEmptyMethod.getDeclaringClass().getModifiers()));
1296 assertTrue((Boolean) isEmptyMethod.invoke(set));
1297
1298
1299 final Method toStringMethod = ClassUtils.getPublicMethod(Object.class, "toString");
1300 assertEquals(Object.class.getMethod("toString"), toStringMethod);
1301 }
1302
1303 @Test
1304 public void testHierarchyExcludingInterfaces() {
1305 final Iterator<Class<?>> iter = ClassUtils.hierarchy(StringParameterizedChild.class).iterator();
1306 assertEquals(StringParameterizedChild.class, iter.next());
1307 assertEquals(GenericParent.class, iter.next());
1308 assertEquals(Object.class, iter.next());
1309 assertFalse(iter.hasNext());
1310 }
1311
1312 @Test
1313 public void testHierarchyIncludingInterfaces() {
1314 final Iterator<Class<?>> iter = ClassUtils.hierarchy(StringParameterizedChild.class, Interfaces.INCLUDE).iterator();
1315 assertEquals(StringParameterizedChild.class, iter.next());
1316 assertEquals(GenericParent.class, iter.next());
1317 assertEquals(GenericConsumer.class, iter.next());
1318 assertEquals(Object.class, iter.next());
1319 assertFalse(iter.hasNext());
1320 }
1321
1322 @Test
1323 public void testIsPrimitiveOrWrapper() {
1324
1325
1326 assertTrue(ClassUtils.isPrimitiveOrWrapper(Boolean.class), "Boolean.class");
1327 assertTrue(ClassUtils.isPrimitiveOrWrapper(Byte.class), "Byte.class");
1328 assertTrue(ClassUtils.isPrimitiveOrWrapper(Character.class), "Character.class");
1329 assertTrue(ClassUtils.isPrimitiveOrWrapper(Short.class), "Short.class");
1330 assertTrue(ClassUtils.isPrimitiveOrWrapper(Integer.class), "Integer.class");
1331 assertTrue(ClassUtils.isPrimitiveOrWrapper(Long.class), "Long.class");
1332 assertTrue(ClassUtils.isPrimitiveOrWrapper(Double.class), "Double.class");
1333 assertTrue(ClassUtils.isPrimitiveOrWrapper(Float.class), "Float.class");
1334
1335
1336 assertTrue(ClassUtils.isPrimitiveOrWrapper(Boolean.TYPE), "boolean");
1337 assertTrue(ClassUtils.isPrimitiveOrWrapper(Byte.TYPE), "byte");
1338 assertTrue(ClassUtils.isPrimitiveOrWrapper(Character.TYPE), "char");
1339 assertTrue(ClassUtils.isPrimitiveOrWrapper(Short.TYPE), "short");
1340 assertTrue(ClassUtils.isPrimitiveOrWrapper(Integer.TYPE), "int");
1341 assertTrue(ClassUtils.isPrimitiveOrWrapper(Long.TYPE), "long");
1342 assertTrue(ClassUtils.isPrimitiveOrWrapper(Double.TYPE), "double");
1343 assertTrue(ClassUtils.isPrimitiveOrWrapper(Float.TYPE), "float");
1344 assertTrue(ClassUtils.isPrimitiveOrWrapper(Void.TYPE), "Void.TYPE");
1345
1346
1347 assertFalse(ClassUtils.isPrimitiveOrWrapper(null), "null");
1348 assertFalse(ClassUtils.isPrimitiveOrWrapper(Void.class), "Void.class");
1349 assertFalse(ClassUtils.isPrimitiveOrWrapper(String.class), "String.class");
1350 assertFalse(ClassUtils.isPrimitiveOrWrapper(this.getClass()), "this.getClass()");
1351 }
1352
1353 @Test
1354 public void testIsPrimitiveWrapper() {
1355
1356
1357 assertTrue(ClassUtils.isPrimitiveWrapper(Boolean.class), "Boolean.class");
1358 assertTrue(ClassUtils.isPrimitiveWrapper(Byte.class), "Byte.class");
1359 assertTrue(ClassUtils.isPrimitiveWrapper(Character.class), "Character.class");
1360 assertTrue(ClassUtils.isPrimitiveWrapper(Short.class), "Short.class");
1361 assertTrue(ClassUtils.isPrimitiveWrapper(Integer.class), "Integer.class");
1362 assertTrue(ClassUtils.isPrimitiveWrapper(Long.class), "Long.class");
1363 assertTrue(ClassUtils.isPrimitiveWrapper(Double.class), "Double.class");
1364 assertTrue(ClassUtils.isPrimitiveWrapper(Float.class), "Float.class");
1365
1366
1367 assertFalse(ClassUtils.isPrimitiveWrapper(Boolean.TYPE), "boolean");
1368 assertFalse(ClassUtils.isPrimitiveWrapper(Byte.TYPE), "byte");
1369 assertFalse(ClassUtils.isPrimitiveWrapper(Character.TYPE), "char");
1370 assertFalse(ClassUtils.isPrimitiveWrapper(Short.TYPE), "short");
1371 assertFalse(ClassUtils.isPrimitiveWrapper(Integer.TYPE), "int");
1372 assertFalse(ClassUtils.isPrimitiveWrapper(Long.TYPE), "long");
1373 assertFalse(ClassUtils.isPrimitiveWrapper(Double.TYPE), "double");
1374 assertFalse(ClassUtils.isPrimitiveWrapper(Float.TYPE), "float");
1375
1376
1377 assertFalse(ClassUtils.isPrimitiveWrapper(null), "null");
1378 assertFalse(ClassUtils.isPrimitiveWrapper(Void.class), "Void.class");
1379 assertFalse(ClassUtils.isPrimitiveWrapper(Void.TYPE), "Void.TYPE");
1380 assertFalse(ClassUtils.isPrimitiveWrapper(String.class), "String.class");
1381 assertFalse(ClassUtils.isPrimitiveWrapper(this.getClass()), "this.getClass()");
1382 }
1383
1384 @Test
1385 public void testPrimitivesToWrappers() {
1386
1387
1388 assertNull(ClassUtils.primitivesToWrappers((Class<?>[]) null), "null -> null");
1389
1390 assertArrayEquals(ArrayUtils.EMPTY_CLASS_ARRAY, ClassUtils.primitivesToWrappers(), "empty -> empty");
1391 final Class<?>[] castNull = ClassUtils.primitivesToWrappers((Class<?>) null);
1392 assertArrayEquals(new Class<?>[] {null}, castNull, "(Class<?>) null -> [null]");
1393
1394 assertArrayEquals(ArrayUtils.EMPTY_CLASS_ARRAY, ClassUtils.primitivesToWrappers(ArrayUtils.EMPTY_CLASS_ARRAY), "empty -> empty");
1395
1396
1397 final Class<?>[] primitives = new Class[] {Boolean.TYPE, Byte.TYPE, Character.TYPE, Short.TYPE, Integer.TYPE, Long.TYPE, Double.TYPE, Float.TYPE,
1398 String.class, ClassUtils.class};
1399 final Class<?>[] wrappers = ClassUtils.primitivesToWrappers(primitives);
1400
1401 for (int i = 0; i < primitives.length; i++) {
1402
1403 final Class<?> primitive = primitives[i];
1404 final Class<?> expectedWrapper = ClassUtils.primitiveToWrapper(primitive);
1405
1406 assertEquals(expectedWrapper, wrappers[i], primitive + " -> " + expectedWrapper);
1407 }
1408
1409
1410 final Class<?>[] noPrimitives = new Class[] {String.class, ClassUtils.class, Void.TYPE};
1411
1412 assertNotSame(noPrimitives, ClassUtils.primitivesToWrappers(noPrimitives), "unmodified");
1413 }
1414
1415 @Test
1416 public void testPrimitiveToWrapper() {
1417
1418
1419 assertEquals(Boolean.class, ClassUtils.primitiveToWrapper(Boolean.TYPE), "boolean -> Boolean.class");
1420 assertEquals(Byte.class, ClassUtils.primitiveToWrapper(Byte.TYPE), "byte -> Byte.class");
1421 assertEquals(Character.class, ClassUtils.primitiveToWrapper(Character.TYPE), "char -> Character.class");
1422 assertEquals(Short.class, ClassUtils.primitiveToWrapper(Short.TYPE), "short -> Short.class");
1423 assertEquals(Integer.class, ClassUtils.primitiveToWrapper(Integer.TYPE), "int -> Integer.class");
1424 assertEquals(Long.class, ClassUtils.primitiveToWrapper(Long.TYPE), "long -> Long.class");
1425 assertEquals(Double.class, ClassUtils.primitiveToWrapper(Double.TYPE), "double -> Double.class");
1426 assertEquals(Float.class, ClassUtils.primitiveToWrapper(Float.TYPE), "float -> Float.class");
1427
1428
1429 assertEquals(String.class, ClassUtils.primitiveToWrapper(String.class), "String.class -> String.class");
1430 assertEquals(ClassUtils.class, ClassUtils.primitiveToWrapper(ClassUtils.class), "ClassUtils.class -> ClassUtils.class");
1431 assertEquals(Void.TYPE, ClassUtils.primitiveToWrapper(Void.TYPE), "Void.TYPE -> Void.TYPE");
1432
1433
1434 assertNull(ClassUtils.primitiveToWrapper(null), "null -> null");
1435 }
1436
1437
1438
1439 @Test
1440 public void testShowJavaBug() throws Exception {
1441
1442 final Set<?> set = Collections.unmodifiableSet(new HashSet<>());
1443 final Method isEmptyMethod = set.getClass().getMethod("isEmpty");
1444 assertThrows(IllegalAccessException.class, () -> isEmptyMethod.invoke(set));
1445 }
1446
1447 @Test
1448 public void testToClass_object() {
1449
1450 assertNull(ClassUtils.toClass((Object[]) null));
1451
1452
1453 assertArrayEquals(ArrayUtils.EMPTY_CLASS_ARRAY, ClassUtils.toClass(), "empty -> empty");
1454 final Class<?>[] castNull = ClassUtils.toClass((Object) null);
1455 assertArrayEquals(new Object[] {null}, castNull, "(Object) null -> [null]");
1456
1457 assertSame(ArrayUtils.EMPTY_CLASS_ARRAY, ClassUtils.toClass(ArrayUtils.EMPTY_OBJECT_ARRAY));
1458
1459 assertArrayEquals(new Class[] {String.class, Integer.class, Double.class}, ClassUtils.toClass("Test", Integer.valueOf(1), Double.valueOf(99d)));
1460
1461 assertArrayEquals(new Class[] {String.class, null, Double.class}, ClassUtils.toClass("Test", null, Double.valueOf(99d)));
1462 }
1463
1464 @Test
1465 public void testWithInterleavingWhitespace() throws ClassNotFoundException {
1466 assertEquals(int[].class, ClassUtils.getClass(" int [ ] "));
1467 assertEquals(long[].class, ClassUtils.getClass("\rlong\t[\n]\r"));
1468 assertEquals(short[].class, ClassUtils.getClass("\tshort \t\t[]"));
1469 assertEquals(byte[].class, ClassUtils.getClass("byte[\t\t\n\r] "));
1470 }
1471
1472 @Test
1473 public void testWrappersToPrimitives() {
1474
1475 final Class<?>[] classes = {Boolean.class, Byte.class, Character.class, Short.class, Integer.class, Long.class, Float.class, Double.class, String.class,
1476 ClassUtils.class, null};
1477
1478 final Class<?>[] primitives = ClassUtils.wrappersToPrimitives(classes);
1479
1480 assertEquals(classes.length, primitives.length, "Wrong length of result array");
1481 for (int i = 0; i < classes.length; i++) {
1482 final Class<?> expectedPrimitive = ClassUtils.wrapperToPrimitive(classes[i]);
1483 assertEquals(expectedPrimitive, primitives[i], classes[i] + " -> " + expectedPrimitive);
1484 }
1485 }
1486
1487 @Test
1488 public void testWrappersToPrimitivesEmpty() {
1489 final Class<?>[] empty = new Class[0];
1490 assertArrayEquals(empty, ClassUtils.wrappersToPrimitives(empty), "Wrong result for empty input");
1491 }
1492
1493 @Test
1494 public void testWrappersToPrimitivesNull() {
1495
1496 assertNull(ClassUtils.wrappersToPrimitives((Class<?>[]) null), "Wrong result for null input");
1497
1498 assertArrayEquals(ArrayUtils.EMPTY_CLASS_ARRAY, ClassUtils.wrappersToPrimitives(), "empty -> empty");
1499 final Class<?>[] castNull = ClassUtils.wrappersToPrimitives((Class<?>) null);
1500 assertArrayEquals(new Class<?>[] {null}, castNull, "(Class<?>) null -> [null]");
1501 }
1502
1503 @Test
1504 public void testWrapperToPrimitive() {
1505
1506 final Class<?>[] primitives = {Boolean.TYPE, Byte.TYPE, Character.TYPE, Short.TYPE, Integer.TYPE, Long.TYPE, Float.TYPE, Double.TYPE};
1507 for (final Class<?> primitive : primitives) {
1508 final Class<?> wrapperCls = ClassUtils.primitiveToWrapper(primitive);
1509 assertFalse(wrapperCls.isPrimitive(), "Still primitive");
1510 assertEquals(primitive, ClassUtils.wrapperToPrimitive(wrapperCls), wrapperCls + " -> " + primitive);
1511 }
1512 }
1513
1514 @Test
1515 public void testWrapperToPrimitiveNoWrapper() {
1516 assertNull(ClassUtils.wrapperToPrimitive(String.class), "Wrong result for non wrapper class");
1517 }
1518
1519 @Test
1520 public void testWrapperToPrimitiveNull() {
1521 assertNull(ClassUtils.wrapperToPrimitive(null), "Wrong result for null class");
1522 }
1523 }