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root/jsr166/jsr166/src/test/tck/LinkedListTest.java

Comparing jsr166/src/test/tck/LinkedListTest.java (file contents):
Revision 1.15 by jsr166, Sat Nov 21 10:25:05 2009 UTC vs.
Revision 1.33 by jsr166, Wed Dec 31 20:09:08 2014 UTC

#	Line 1 | Line 1
1		/*
2		* Written by Doug Lea with assistance from members of JCP JSR-166
3		* Expert Group and released to the public domain, as explained at
4	<	* http://creativecommons.org/licenses/publicdomain
4	>	* http://creativecommons.org/publicdomain/zero/1.0/
5		* Other contributors include Andrew Wright, Jeffrey Hayes,
6		* Pat Fisher, Mike Judd.
7		*/
8
9	<	import junit.framework.*;
10	<	import java.util.*;
11	<	import java.util.concurrent.*;
9	>	import java.util.Arrays;
10	>	import java.util.Collection;
11	>	import java.util.Iterator;
12	>	import java.util.LinkedList;
13	>	import java.util.NoSuchElementException;
14	>
15	>	import junit.framework.Test;
16	>	import junit.framework.TestSuite;
17
18		public class LinkedListTest extends JSR166TestCase {
19		public static void main(String[] args) {
20	<	junit.textui.TestRunner.run (suite());
20	>	junit.textui.TestRunner.run(suite());
21		}
22
23		public static Test suite() {
#	Line 20 | Line 25 | public class LinkedListTest extends JSR1
25		}
26
27		/**
28	<	* Create a queue of given size containing consecutive
28	>	* Returns a new queue of given size containing consecutive
29		* Integers 0 ... n.
30		*/
31	<	private LinkedList populatedQueue(int n) {
32	<	LinkedList q = new LinkedList();
31	>	private LinkedList<Integer> populatedQueue(int n) {
32	>	LinkedList<Integer> q = new LinkedList<Integer>();
33		assertTrue(q.isEmpty());
34		for (int i = 0; i < n; ++i)
35		assertTrue(q.offer(new Integer(i)));
#	Line 56 | Line 61 | public class LinkedListTest extends JSR1
61		public void testConstructor6() {
62		Integer[] ints = new Integer[SIZE];
63		for (int i = 0; i < SIZE; ++i)
64	<	ints[i] = new Integer(i);
64	>	ints[i] = i;
65		LinkedList q = new LinkedList(Arrays.asList(ints));
66		for (int i = 0; i < SIZE; ++i)
67		assertEquals(ints[i], q.poll());
#	Line 137 | Line 142 | public class LinkedListTest extends JSR1
142		Integer[] empty = new Integer[0];
143		Integer[] ints = new Integer[SIZE];
144		for (int i = 0; i < SIZE; ++i)
145	<	ints[i] = new Integer(i);
145	>	ints[i] = i;
146		LinkedList q = new LinkedList();
147		assertFalse(q.addAll(Arrays.asList(empty)));
148		assertTrue(q.addAll(Arrays.asList(ints)));
#	Line 174 | Line 179 | public class LinkedListTest extends JSR1
179		}
180
181		/**
182	<	*  poll succeeds unless empty
182	>	* poll succeeds unless empty
183		*/
184		public void testPoll() {
185		LinkedList q = populatedQueue(SIZE);
186		for (int i = 0; i < SIZE; ++i) {
187	<	assertEquals(i, ((Integer)q.poll()).intValue());
187	>	assertEquals(i, q.poll());
188		}
189		assertNull(q.poll());
190		}
191
192		/**
193	<	*  peek returns next element, or null if empty
193	>	* peek returns next element, or null if empty
194		*/
195		public void testPeek() {
196		LinkedList q = populatedQueue(SIZE);
197		for (int i = 0; i < SIZE; ++i) {
198	<	assertEquals(i, ((Integer)q.peek()).intValue());
199	<	q.poll();
198	>	assertEquals(i, q.peek());
199	>	assertEquals(i, q.poll());
200		assertTrue(q.peek() == null ||
201	<	i != ((Integer)q.peek()).intValue());
201	>	!q.peek().equals(i));
202		}
203		assertNull(q.peek());
204		}
#	Line 204 | Line 209 | public class LinkedListTest extends JSR1
209		public void testElement() {
210		LinkedList q = populatedQueue(SIZE);
211		for (int i = 0; i < SIZE; ++i) {
212	<	assertEquals(i, ((Integer)q.element()).intValue());
213	<	q.poll();
212	>	assertEquals(i, q.element());
213	>	assertEquals(i, q.poll());
214		}
215		try {
216		q.element();
#	Line 214 | Line 219 | public class LinkedListTest extends JSR1
219		}
220
221		/**
222	<	*  remove removes next element, or throws NSEE if empty
222	>	* remove removes next element, or throws NSEE if empty
223		*/
224		public void testRemove() {
225		LinkedList q = populatedQueue(SIZE);
226		for (int i = 0; i < SIZE; ++i) {
227	<	assertEquals(i, ((Integer)q.remove()).intValue());
227	>	assertEquals(i, q.remove());
228		}
229		try {
230		q.remove();
#	Line 232 | Line 237 | public class LinkedListTest extends JSR1
237		*/
238		public void testRemoveElement() {
239		LinkedList q = populatedQueue(SIZE);
240	<	for (int i = 1; i < SIZE; i+=2) {
241	<	assertTrue(q.remove(new Integer(i)));
242	<	}
243	<	for (int i = 0; i < SIZE; i+=2) {
244	<	assertTrue(q.remove(new Integer(i)));
245	<	assertFalse(q.remove(new Integer(i+1)));
240	>	for (int i = 1; i < SIZE; i += 2) {
241	>	assertTrue(q.contains(i));
242	>	assertTrue(q.remove((Integer)i));
243	>	assertFalse(q.contains(i));
244	>	assertTrue(q.contains(i-1));
245	>	}
246	>	for (int i = 0; i < SIZE; i += 2) {
247	>	assertTrue(q.contains(i));
248	>	assertTrue(q.remove((Integer)i));
249	>	assertFalse(q.contains(i));
250	>	assertFalse(q.remove((Integer)(i+1)));
251	>	assertFalse(q.contains(i+1));
252		}
253		assertTrue(q.isEmpty());
254		}
#	Line 262 | Line 273 | public class LinkedListTest extends JSR1
273		q.clear();
274		assertTrue(q.isEmpty());
275		assertEquals(0, q.size());
276	<	q.add(new Integer(1));
276	>	assertTrue(q.add(new Integer(1)));
277		assertFalse(q.isEmpty());
278		q.clear();
279		assertTrue(q.isEmpty());
#	Line 277 | Line 288 | public class LinkedListTest extends JSR1
288		for (int i = 0; i < SIZE; ++i) {
289		assertTrue(q.containsAll(p));
290		assertFalse(p.containsAll(q));
291	<	p.add(new Integer(i));
291	>	assertTrue(p.add(new Integer(i)));
292		}
293		assertTrue(p.containsAll(q));
294		}
#	Line 318 | Line 329 | public class LinkedListTest extends JSR1
329		}
330
331		/**
332	<	*  toArray contains all elements
332	>	* toArray contains all elements in FIFO order
333		*/
334		public void testToArray() {
335		LinkedList q = populatedQueue(SIZE);
336		Object[] o = q.toArray();
326	–	Arrays.sort(o);
337		for (int i = 0; i < o.length; i++)
338	<	assertEquals(o[i], q.poll());
338	>	assertSame(o[i], q.poll());
339		}
340
341		/**
342	<	*  toArray(a) contains all elements
342	>	* toArray(a) contains all elements in FIFO order
343		*/
344		public void testToArray2() {
345	<	LinkedList q = populatedQueue(SIZE);
345	>	LinkedList<Integer> q = populatedQueue(SIZE);
346		Integer[] ints = new Integer[SIZE];
347	<	ints = (Integer[])q.toArray(ints);
348	<	Arrays.sort(ints);
347	>	Integer[] array = q.toArray(ints);
348	>	assertSame(ints, array);
349		for (int i = 0; i < ints.length; i++)
350	<	assertEquals(ints[i], q.poll());
350	>	assertSame(ints[i], q.poll());
351		}
352
353		/**
354	<	* toArray(null) throws NPE
354	>	* toArray(null) throws NullPointerException
355		*/
356	<	public void testToArray_BadArg() {
356	>	public void testToArray_NullArg() {
357	>	LinkedList l = new LinkedList();
358	>	l.add(new Object());
359		try {
360	<	LinkedList l = new LinkedList();
349	<	l.add(new Object());
350	<	Object o[] = l.toArray(null);
360	>	l.toArray(null);
361		shouldThrow();
362		} catch (NullPointerException success) {}
363		}
364
365		/**
366	<	* toArray with incompatable aray type throws CCE
366	>	* toArray(incompatible array type) throws ArrayStoreException
367		*/
368		public void testToArray1_BadArg() {
369	+	LinkedList l = new LinkedList();
370	+	l.add(new Integer(5));
371		try {
372	<	LinkedList l = new LinkedList();
361	<	l.add(new Integer(5));
362	<	Object o[] = l.toArray(new String[10] );
372	>	l.toArray(new String[10]);
373		shouldThrow();
374		} catch (ArrayStoreException success) {}
375		}
376
377		/**
378	<	*  iterator iterates through all elements
378	>	* iterator iterates through all elements
379		*/
380		public void testIterator() {
381		LinkedList q = populatedQueue(SIZE);
#	Line 379 | Line 389 | public class LinkedListTest extends JSR1
389		}
390
391		/**
392	<	*  iterator ordering is FIFO
392	>	* iterator ordering is FIFO
393		*/
394		public void testIteratorOrdering() {
395		final LinkedList q = new LinkedList();
#	Line 388 | Line 398 | public class LinkedListTest extends JSR1
398		q.add(new Integer(3));
399		int k = 0;
400		for (Iterator it = q.iterator(); it.hasNext();) {
401	<	int i = ((Integer)(it.next())).intValue();
392	<	assertEquals(++k, i);
401	>	assertEquals(++k, it.next());
402		}
403
404		assertEquals(3, k);
#	Line 398 | Line 407 | public class LinkedListTest extends JSR1
407		/**
408		* iterator.remove removes current element
409		*/
410	<	public void testIteratorRemove () {
410	>	public void testIteratorRemove() {
411		final LinkedList q = new LinkedList();
412		q.add(new Integer(1));
413		q.add(new Integer(2));
414		q.add(new Integer(3));
415		Iterator it = q.iterator();
416	<	it.next();
416	>	assertEquals(1, it.next());
417		it.remove();
418		it = q.iterator();
419	<	assertEquals(it.next(), new Integer(2));
420	<	assertEquals(it.next(), new Integer(3));
419	>	assertEquals(2, it.next());
420	>	assertEquals(3, it.next());
421		assertFalse(it.hasNext());
422		}
423
424		/**
425	<	*  Descending iterator iterates through all elements
425	>	* Descending iterator iterates through all elements
426		*/
427		public void testDescendingIterator() {
428		LinkedList q = populatedQueue(SIZE);
#	Line 432 | Line 441 | public class LinkedListTest extends JSR1
441		}
442
443		/**
444	<	*  Descending iterator ordering is reverse FIFO
444	>	* Descending iterator ordering is reverse FIFO
445		*/
446		public void testDescendingIteratorOrdering() {
447		final LinkedList q = new LinkedList();
#	Line 441 | Line 450 | public class LinkedListTest extends JSR1
450		q.add(new Integer(1));
451		int k = 0;
452		for (Iterator it = q.descendingIterator(); it.hasNext();) {
453	<	int i = ((Integer)(it.next())).intValue();
445	<	assertEquals(++k, i);
453	>	assertEquals(++k, it.next());
454		}
455
456		assertEquals(3, k);
#	Line 451 | Line 459 | public class LinkedListTest extends JSR1
459		/**
460		* descendingIterator.remove removes current element
461		*/
462	<	public void testDescendingIteratorRemove () {
462	>	public void testDescendingIteratorRemove() {
463		final LinkedList q = new LinkedList();
464	<	q.add(new Integer(3));
465	<	q.add(new Integer(2));
466	<	q.add(new Integer(1));
464	>	q.add(three);
465	>	q.add(two);
466	>	q.add(one);
467		Iterator it = q.descendingIterator();
468		it.next();
469		it.remove();
470		it = q.descendingIterator();
471	<	assertEquals(it.next(), new Integer(2));
472	<	assertEquals(it.next(), new Integer(3));
471	>	assertSame(it.next(), two);
472	>	assertSame(it.next(), three);
473		assertFalse(it.hasNext());
474		}
475
468	–
476		/**
477		* toString contains toStrings of elements
478		*/
#	Line 473 | Line 480 | public class LinkedListTest extends JSR1
480		LinkedList q = populatedQueue(SIZE);
481		String s = q.toString();
482		for (int i = 0; i < SIZE; ++i) {
483	<	assertTrue(s.indexOf(String.valueOf(i)) >= 0);
483	>	assertTrue(s.contains(String.valueOf(i)));
484		}
485		}
486
#	Line 483 | Line 490 | public class LinkedListTest extends JSR1
490		public void testAddFirst() {
491		LinkedList q = populatedQueue(3);
492		q.addFirst(four);
493	<	assertEquals(four,q.peek());
493	>	assertSame(four, q.peek());
494		}
495
496		/**
#	Line 491 | Line 498 | public class LinkedListTest extends JSR1
498		*/
499		public void testPush() {
500		LinkedList q = populatedQueue(3);
494	–	q.pollLast();
501		q.push(four);
502	<	assertEquals(four,q.peekFirst());
502	>	assertSame(four, q.peekFirst());
503		}
504
505		/**
506	<	*  pop removes next element, or throws NSEE if empty
506	>	* pop removes next element, or throws NSEE if empty
507		*/
508		public void testPop() {
509		LinkedList q = populatedQueue(SIZE);
510		for (int i = 0; i < SIZE; ++i) {
511	<	assertEquals(i, ((Integer)q.pop()).intValue());
511	>	assertEquals(i, q.pop());
512		}
513		try {
514		q.pop();
#	Line 529 | Line 535 | public class LinkedListTest extends JSR1
535		}
536
537		/**
538	<	*  pollLast succeeds unless empty
538	>	* pollLast succeeds unless empty
539		*/
540		public void testPollLast() {
541		LinkedList q = populatedQueue(SIZE);
542		for (int i = SIZE-1; i >= 0; --i) {
543	<	assertEquals(i, ((Integer)q.pollLast()).intValue());
543	>	assertEquals(i, q.pollLast());
544		}
545		assertNull(q.pollLast());
546		}
547
548		/**
549	<	*  peekFirst returns next element, or null if empty
549	>	* peekFirst returns next element, or null if empty
550		*/
551		public void testPeekFirst() {
552		LinkedList q = populatedQueue(SIZE);
553		for (int i = 0; i < SIZE; ++i) {
554	<	assertEquals(i, ((Integer)q.peekFirst()).intValue());
555	<	q.pollFirst();
554	>	assertEquals(i, q.peekFirst());
555	>	assertEquals(i, q.pollFirst());
556		assertTrue(q.peekFirst() == null ||
557	<	i != ((Integer)q.peekFirst()).intValue());
557	>	!q.peekFirst().equals(i));
558		}
559		assertNull(q.peekFirst());
560		}
561
556	–
562		/**
563	<	*  peekLast returns next element, or null if empty
563	>	* peekLast returns next element, or null if empty
564		*/
565		public void testPeekLast() {
566		LinkedList q = populatedQueue(SIZE);
567		for (int i = SIZE-1; i >= 0; --i) {
568	<	assertEquals(i, ((Integer)q.peekLast()).intValue());
569	<	q.pollLast();
568	>	assertEquals(i, q.peekLast());
569	>	assertEquals(i, q.pollLast());
570		assertTrue(q.peekLast() == null ||
571	<	i != ((Integer)q.peekLast()).intValue());
571	>	!q.peekLast().equals(i));
572		}
573		assertNull(q.peekLast());
574		}
#	Line 571 | Line 576 | public class LinkedListTest extends JSR1
576		public void testFirstElement() {
577		LinkedList q = populatedQueue(SIZE);
578		for (int i = 0; i < SIZE; ++i) {
579	<	assertEquals(i, ((Integer)q.getFirst()).intValue());
580	<	q.pollFirst();
579	>	assertEquals(i, q.getFirst());
580	>	assertEquals(i, q.pollFirst());
581		}
582		try {
583		q.getFirst();
#	Line 581 | Line 586 | public class LinkedListTest extends JSR1
586		}
587
588		/**
589	<	*  getLast returns next element, or throws NSEE if empty
589	>	* getLast returns next element, or throws NSEE if empty
590		*/
591		public void testLastElement() {
592		LinkedList q = populatedQueue(SIZE);
593		for (int i = SIZE-1; i >= 0; --i) {
594	<	assertEquals(i, ((Integer)q.getLast()).intValue());
595	<	q.pollLast();
594	>	assertEquals(i, q.getLast());
595	>	assertEquals(i, q.pollLast());
596		}
597		try {
598		q.getLast();
#	Line 601 | Line 606 | public class LinkedListTest extends JSR1
606		*/
607		public void testRemoveFirstOccurrence() {
608		LinkedList q = populatedQueue(SIZE);
609	<	for (int i = 1; i < SIZE; i+=2) {
609	>	for (int i = 1; i < SIZE; i += 2) {
610		assertTrue(q.removeFirstOccurrence(new Integer(i)));
611		}
612	<	for (int i = 0; i < SIZE; i+=2) {
612	>	for (int i = 0; i < SIZE; i += 2) {
613		assertTrue(q.removeFirstOccurrence(new Integer(i)));
614		assertFalse(q.removeFirstOccurrence(new Integer(i+1)));
615		}
#	Line 616 | Line 621 | public class LinkedListTest extends JSR1
621		*/
622		public void testRemoveLastOccurrence() {
623		LinkedList q = populatedQueue(SIZE);
624	<	for (int i = 1; i < SIZE; i+=2) {
624	>	for (int i = 1; i < SIZE; i += 2) {
625		assertTrue(q.removeLastOccurrence(new Integer(i)));
626		}
627	<	for (int i = 0; i < SIZE; i+=2) {
627	>	for (int i = 0; i < SIZE; i += 2) {
628		assertTrue(q.removeLastOccurrence(new Integer(i)));
629		assertFalse(q.removeLastOccurrence(new Integer(i+1)));
630		}

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