12 |
|
|
13 |
|
public class LinkedListTest extends JSR166TestCase { |
14 |
|
public static void main(String[] args) { |
15 |
< |
junit.textui.TestRunner.run (suite()); |
15 |
> |
junit.textui.TestRunner.run(suite()); |
16 |
|
} |
17 |
|
|
18 |
|
public static Test suite() { |
23 |
|
* Create a queue of given size containing consecutive |
24 |
|
* Integers 0 ... n. |
25 |
|
*/ |
26 |
< |
private LinkedList populatedQueue(int n) { |
27 |
< |
LinkedList q = new LinkedList(); |
26 |
> |
private LinkedList<Integer> populatedQueue(int n) { |
27 |
> |
LinkedList<Integer> q = new LinkedList<Integer>(); |
28 |
|
assertTrue(q.isEmpty()); |
29 |
|
for (int i = 0; i < n; ++i) |
30 |
|
assertTrue(q.offer(new Integer(i))); |
56 |
|
public void testConstructor6() { |
57 |
|
Integer[] ints = new Integer[SIZE]; |
58 |
|
for (int i = 0; i < SIZE; ++i) |
59 |
< |
ints[i] = new Integer(i); |
59 |
> |
ints[i] = i; |
60 |
|
LinkedList q = new LinkedList(Arrays.asList(ints)); |
61 |
|
for (int i = 0; i < SIZE; ++i) |
62 |
|
assertEquals(ints[i], q.poll()); |
137 |
|
Integer[] empty = new Integer[0]; |
138 |
|
Integer[] ints = new Integer[SIZE]; |
139 |
|
for (int i = 0; i < SIZE; ++i) |
140 |
< |
ints[i] = new Integer(i); |
140 |
> |
ints[i] = i; |
141 |
|
LinkedList q = new LinkedList(); |
142 |
|
assertFalse(q.addAll(Arrays.asList(empty))); |
143 |
|
assertTrue(q.addAll(Arrays.asList(ints))); |
174 |
|
} |
175 |
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|
176 |
|
/** |
177 |
< |
* poll succeeds unless empty |
177 |
> |
* poll succeeds unless empty |
178 |
|
*/ |
179 |
|
public void testPoll() { |
180 |
|
LinkedList q = populatedQueue(SIZE); |
181 |
|
for (int i = 0; i < SIZE; ++i) { |
182 |
< |
assertEquals(i, ((Integer)q.poll()).intValue()); |
182 |
> |
assertEquals(i, q.poll()); |
183 |
|
} |
184 |
|
assertNull(q.poll()); |
185 |
|
} |
186 |
|
|
187 |
|
/** |
188 |
< |
* peek returns next element, or null if empty |
188 |
> |
* peek returns next element, or null if empty |
189 |
|
*/ |
190 |
|
public void testPeek() { |
191 |
|
LinkedList q = populatedQueue(SIZE); |
192 |
|
for (int i = 0; i < SIZE; ++i) { |
193 |
< |
assertEquals(i, ((Integer)q.peek()).intValue()); |
194 |
< |
q.poll(); |
193 |
> |
assertEquals(i, q.peek()); |
194 |
> |
assertEquals(i, q.poll()); |
195 |
|
assertTrue(q.peek() == null || |
196 |
< |
i != ((Integer)q.peek()).intValue()); |
196 |
> |
!q.peek().equals(i)); |
197 |
|
} |
198 |
|
assertNull(q.peek()); |
199 |
|
} |
204 |
|
public void testElement() { |
205 |
|
LinkedList q = populatedQueue(SIZE); |
206 |
|
for (int i = 0; i < SIZE; ++i) { |
207 |
< |
assertEquals(i, ((Integer)q.element()).intValue()); |
208 |
< |
q.poll(); |
207 |
> |
assertEquals(i, q.element()); |
208 |
> |
assertEquals(i, q.poll()); |
209 |
|
} |
210 |
|
try { |
211 |
|
q.element(); |
214 |
|
} |
215 |
|
|
216 |
|
/** |
217 |
< |
* remove removes next element, or throws NSEE if empty |
217 |
> |
* remove removes next element, or throws NSEE if empty |
218 |
|
*/ |
219 |
|
public void testRemove() { |
220 |
|
LinkedList q = populatedQueue(SIZE); |
221 |
|
for (int i = 0; i < SIZE; ++i) { |
222 |
< |
assertEquals(i, ((Integer)q.remove()).intValue()); |
222 |
> |
assertEquals(i, q.remove()); |
223 |
|
} |
224 |
|
try { |
225 |
|
q.remove(); |
233 |
|
public void testRemoveElement() { |
234 |
|
LinkedList q = populatedQueue(SIZE); |
235 |
|
for (int i = 1; i < SIZE; i+=2) { |
236 |
< |
assertTrue(q.remove(new Integer(i))); |
236 |
> |
assertTrue(q.contains(i)); |
237 |
> |
assertTrue(q.remove((Integer)i)); |
238 |
> |
assertFalse(q.contains(i)); |
239 |
> |
assertTrue(q.contains(i-1)); |
240 |
|
} |
241 |
|
for (int i = 0; i < SIZE; i+=2) { |
242 |
< |
assertTrue(q.remove(new Integer(i))); |
243 |
< |
assertFalse(q.remove(new Integer(i+1))); |
242 |
> |
assertTrue(q.contains(i)); |
243 |
> |
assertTrue(q.remove((Integer)i)); |
244 |
> |
assertFalse(q.contains(i)); |
245 |
> |
assertFalse(q.remove((Integer)(i+1))); |
246 |
> |
assertFalse(q.contains(i+1)); |
247 |
|
} |
248 |
|
assertTrue(q.isEmpty()); |
249 |
|
} |
268 |
|
q.clear(); |
269 |
|
assertTrue(q.isEmpty()); |
270 |
|
assertEquals(0, q.size()); |
271 |
< |
q.add(new Integer(1)); |
271 |
> |
assertTrue(q.add(new Integer(1))); |
272 |
|
assertFalse(q.isEmpty()); |
273 |
|
q.clear(); |
274 |
|
assertTrue(q.isEmpty()); |
283 |
|
for (int i = 0; i < SIZE; ++i) { |
284 |
|
assertTrue(q.containsAll(p)); |
285 |
|
assertFalse(p.containsAll(q)); |
286 |
< |
p.add(new Integer(i)); |
286 |
> |
assertTrue(p.add(new Integer(i))); |
287 |
|
} |
288 |
|
assertTrue(p.containsAll(q)); |
289 |
|
} |
324 |
|
} |
325 |
|
|
326 |
|
/** |
327 |
< |
* toArray contains all elements |
327 |
> |
* toArray contains all elements in FIFO order |
328 |
|
*/ |
329 |
|
public void testToArray() { |
330 |
|
LinkedList q = populatedQueue(SIZE); |
331 |
|
Object[] o = q.toArray(); |
326 |
– |
Arrays.sort(o); |
332 |
|
for (int i = 0; i < o.length; i++) |
333 |
< |
assertEquals(o[i], q.poll()); |
333 |
> |
assertSame(o[i], q.poll()); |
334 |
|
} |
335 |
|
|
336 |
|
/** |
337 |
< |
* toArray(a) contains all elements |
337 |
> |
* toArray(a) contains all elements in FIFO order |
338 |
|
*/ |
339 |
|
public void testToArray2() { |
340 |
< |
LinkedList q = populatedQueue(SIZE); |
340 |
> |
LinkedList<Integer> q = populatedQueue(SIZE); |
341 |
|
Integer[] ints = new Integer[SIZE]; |
342 |
< |
ints = (Integer[])q.toArray(ints); |
343 |
< |
Arrays.sort(ints); |
342 |
> |
Integer[] array = q.toArray(ints); |
343 |
> |
assertSame(ints, array); |
344 |
|
for (int i = 0; i < ints.length; i++) |
345 |
< |
assertEquals(ints[i], q.poll()); |
345 |
> |
assertSame(ints[i], q.poll()); |
346 |
|
} |
347 |
|
|
348 |
|
/** |
349 |
< |
* toArray(null) throws NPE |
349 |
> |
* toArray(null) throws NullPointerException |
350 |
|
*/ |
351 |
< |
public void testToArray_BadArg() { |
351 |
> |
public void testToArray_NullArg() { |
352 |
> |
LinkedList l = new LinkedList(); |
353 |
> |
l.add(new Object()); |
354 |
|
try { |
355 |
< |
LinkedList l = new LinkedList(); |
349 |
< |
l.add(new Object()); |
350 |
< |
Object o[] = l.toArray(null); |
355 |
> |
l.toArray(null); |
356 |
|
shouldThrow(); |
357 |
|
} catch (NullPointerException success) {} |
358 |
|
} |
359 |
|
|
360 |
|
/** |
361 |
< |
* toArray with incompatable aray type throws CCE |
361 |
> |
* toArray(incompatible array type) throws ArrayStoreException |
362 |
|
*/ |
363 |
|
public void testToArray1_BadArg() { |
364 |
+ |
LinkedList l = new LinkedList(); |
365 |
+ |
l.add(new Integer(5)); |
366 |
|
try { |
367 |
< |
LinkedList l = new LinkedList(); |
361 |
< |
l.add(new Integer(5)); |
362 |
< |
Object o[] = l.toArray(new String[10] ); |
367 |
> |
l.toArray(new String[10]); |
368 |
|
shouldThrow(); |
369 |
|
} catch (ArrayStoreException success) {} |
370 |
|
} |
371 |
|
|
372 |
|
/** |
373 |
< |
* iterator iterates through all elements |
373 |
> |
* iterator iterates through all elements |
374 |
|
*/ |
375 |
|
public void testIterator() { |
376 |
|
LinkedList q = populatedQueue(SIZE); |
384 |
|
} |
385 |
|
|
386 |
|
/** |
387 |
< |
* iterator ordering is FIFO |
387 |
> |
* iterator ordering is FIFO |
388 |
|
*/ |
389 |
|
public void testIteratorOrdering() { |
390 |
|
final LinkedList q = new LinkedList(); |
393 |
|
q.add(new Integer(3)); |
394 |
|
int k = 0; |
395 |
|
for (Iterator it = q.iterator(); it.hasNext();) { |
396 |
< |
int i = ((Integer)(it.next())).intValue(); |
392 |
< |
assertEquals(++k, i); |
396 |
> |
assertEquals(++k, it.next()); |
397 |
|
} |
398 |
|
|
399 |
|
assertEquals(3, k); |
402 |
|
/** |
403 |
|
* iterator.remove removes current element |
404 |
|
*/ |
405 |
< |
public void testIteratorRemove () { |
405 |
> |
public void testIteratorRemove() { |
406 |
|
final LinkedList q = new LinkedList(); |
407 |
|
q.add(new Integer(1)); |
408 |
|
q.add(new Integer(2)); |
409 |
|
q.add(new Integer(3)); |
410 |
|
Iterator it = q.iterator(); |
411 |
< |
it.next(); |
411 |
> |
assertEquals(it.next(), 1); |
412 |
|
it.remove(); |
413 |
|
it = q.iterator(); |
414 |
< |
assertEquals(it.next(), new Integer(2)); |
415 |
< |
assertEquals(it.next(), new Integer(3)); |
414 |
> |
assertEquals(it.next(), 2); |
415 |
> |
assertEquals(it.next(), 3); |
416 |
|
assertFalse(it.hasNext()); |
417 |
|
} |
418 |
|
|
419 |
|
/** |
420 |
< |
* Descending iterator iterates through all elements |
420 |
> |
* Descending iterator iterates through all elements |
421 |
|
*/ |
422 |
|
public void testDescendingIterator() { |
423 |
|
LinkedList q = populatedQueue(SIZE); |
436 |
|
} |
437 |
|
|
438 |
|
/** |
439 |
< |
* Descending iterator ordering is reverse FIFO |
439 |
> |
* Descending iterator ordering is reverse FIFO |
440 |
|
*/ |
441 |
|
public void testDescendingIteratorOrdering() { |
442 |
|
final LinkedList q = new LinkedList(); |
445 |
|
q.add(new Integer(1)); |
446 |
|
int k = 0; |
447 |
|
for (Iterator it = q.descendingIterator(); it.hasNext();) { |
448 |
< |
int i = ((Integer)(it.next())).intValue(); |
445 |
< |
assertEquals(++k, i); |
448 |
> |
assertEquals(++k, it.next()); |
449 |
|
} |
450 |
|
|
451 |
|
assertEquals(3, k); |
454 |
|
/** |
455 |
|
* descendingIterator.remove removes current element |
456 |
|
*/ |
457 |
< |
public void testDescendingIteratorRemove () { |
457 |
> |
public void testDescendingIteratorRemove() { |
458 |
|
final LinkedList q = new LinkedList(); |
459 |
< |
q.add(new Integer(3)); |
460 |
< |
q.add(new Integer(2)); |
461 |
< |
q.add(new Integer(1)); |
459 |
> |
q.add(three); |
460 |
> |
q.add(two); |
461 |
> |
q.add(one); |
462 |
|
Iterator it = q.descendingIterator(); |
463 |
|
it.next(); |
464 |
|
it.remove(); |
465 |
|
it = q.descendingIterator(); |
466 |
< |
assertEquals(it.next(), new Integer(2)); |
467 |
< |
assertEquals(it.next(), new Integer(3)); |
466 |
> |
assertSame(it.next(), two); |
467 |
> |
assertSame(it.next(), three); |
468 |
|
assertFalse(it.hasNext()); |
469 |
|
} |
470 |
|
|
486 |
|
public void testAddFirst() { |
487 |
|
LinkedList q = populatedQueue(3); |
488 |
|
q.addFirst(four); |
489 |
< |
assertEquals(four,q.peek()); |
489 |
> |
assertSame(four, q.peek()); |
490 |
|
} |
491 |
|
|
492 |
|
/** |
494 |
|
*/ |
495 |
|
public void testPush() { |
496 |
|
LinkedList q = populatedQueue(3); |
494 |
– |
q.pollLast(); |
497 |
|
q.push(four); |
498 |
< |
assertEquals(four,q.peekFirst()); |
498 |
> |
assertSame(four, q.peekFirst()); |
499 |
|
} |
500 |
|
|
501 |
|
/** |
502 |
< |
* pop removes next element, or throws NSEE if empty |
502 |
> |
* pop removes next element, or throws NSEE if empty |
503 |
|
*/ |
504 |
|
public void testPop() { |
505 |
|
LinkedList q = populatedQueue(SIZE); |
506 |
|
for (int i = 0; i < SIZE; ++i) { |
507 |
< |
assertEquals(i, ((Integer)q.pop()).intValue()); |
507 |
> |
assertEquals(i, q.pop()); |
508 |
|
} |
509 |
|
try { |
510 |
|
q.pop(); |
531 |
|
} |
532 |
|
|
533 |
|
/** |
534 |
< |
* pollLast succeeds unless empty |
534 |
> |
* pollLast succeeds unless empty |
535 |
|
*/ |
536 |
|
public void testPollLast() { |
537 |
|
LinkedList q = populatedQueue(SIZE); |
538 |
|
for (int i = SIZE-1; i >= 0; --i) { |
539 |
< |
assertEquals(i, ((Integer)q.pollLast()).intValue()); |
539 |
> |
assertEquals(i, q.pollLast()); |
540 |
|
} |
541 |
|
assertNull(q.pollLast()); |
542 |
|
} |
543 |
|
|
544 |
|
/** |
545 |
< |
* peekFirst returns next element, or null if empty |
545 |
> |
* peekFirst returns next element, or null if empty |
546 |
|
*/ |
547 |
|
public void testPeekFirst() { |
548 |
|
LinkedList q = populatedQueue(SIZE); |
549 |
|
for (int i = 0; i < SIZE; ++i) { |
550 |
< |
assertEquals(i, ((Integer)q.peekFirst()).intValue()); |
551 |
< |
q.pollFirst(); |
550 |
> |
assertEquals(i, q.peekFirst()); |
551 |
> |
assertEquals(i, q.pollFirst()); |
552 |
|
assertTrue(q.peekFirst() == null || |
553 |
< |
i != ((Integer)q.peekFirst()).intValue()); |
553 |
> |
!q.peekFirst().equals(i)); |
554 |
|
} |
555 |
|
assertNull(q.peekFirst()); |
556 |
|
} |
557 |
|
|
558 |
|
|
559 |
|
/** |
560 |
< |
* peekLast returns next element, or null if empty |
560 |
> |
* peekLast returns next element, or null if empty |
561 |
|
*/ |
562 |
|
public void testPeekLast() { |
563 |
|
LinkedList q = populatedQueue(SIZE); |
564 |
|
for (int i = SIZE-1; i >= 0; --i) { |
565 |
< |
assertEquals(i, ((Integer)q.peekLast()).intValue()); |
566 |
< |
q.pollLast(); |
565 |
> |
assertEquals(i, q.peekLast()); |
566 |
> |
assertEquals(i, q.pollLast()); |
567 |
|
assertTrue(q.peekLast() == null || |
568 |
< |
i != ((Integer)q.peekLast()).intValue()); |
568 |
> |
!q.peekLast().equals(i)); |
569 |
|
} |
570 |
|
assertNull(q.peekLast()); |
571 |
|
} |
573 |
|
public void testFirstElement() { |
574 |
|
LinkedList q = populatedQueue(SIZE); |
575 |
|
for (int i = 0; i < SIZE; ++i) { |
576 |
< |
assertEquals(i, ((Integer)q.getFirst()).intValue()); |
577 |
< |
q.pollFirst(); |
576 |
> |
assertEquals(i, q.getFirst()); |
577 |
> |
assertEquals(i, q.pollFirst()); |
578 |
|
} |
579 |
|
try { |
580 |
|
q.getFirst(); |
583 |
|
} |
584 |
|
|
585 |
|
/** |
586 |
< |
* getLast returns next element, or throws NSEE if empty |
586 |
> |
* getLast returns next element, or throws NSEE if empty |
587 |
|
*/ |
588 |
|
public void testLastElement() { |
589 |
|
LinkedList q = populatedQueue(SIZE); |
590 |
|
for (int i = SIZE-1; i >= 0; --i) { |
591 |
< |
assertEquals(i, ((Integer)q.getLast()).intValue()); |
592 |
< |
q.pollLast(); |
591 |
> |
assertEquals(i, q.getLast()); |
592 |
> |
assertEquals(i, q.pollLast()); |
593 |
|
} |
594 |
|
try { |
595 |
|
q.getLast(); |