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Comparing jsr166/src/test/tck/LinkedListTest.java (file contents):
Revision 1.13 by jsr166, Sat Nov 21 02:07:27 2009 UTC vs.
Revision 1.35 by jsr166, Sat Jan 17 22:55:06 2015 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 47 | Line 52 | public class LinkedListTest extends JSR1
52		try {
53		LinkedList q = new LinkedList((Collection)null);
54		shouldThrow();
55	<	}
51	<	catch (NullPointerException success) {}
55	>	} catch (NullPointerException success) {}
56		}
57
58		/**
59		* Queue contains all elements of collection used to initialize
56	–
60		*/
61		public void testConstructor6() {
62	<	try {
63	<	Integer[] ints = new Integer[SIZE];
64	<	for (int i = 0; i < SIZE; ++i)
65	<	ints[i] = new Integer(i);
66	<	LinkedList q = new LinkedList(Arrays.asList(ints));
67	<	for (int i = 0; i < SIZE; ++i)
65	<	assertEquals(ints[i], q.poll());
66	<	}
67	<	finally {}
62	>	Integer[] ints = new Integer[SIZE];
63	>	for (int i = 0; i < SIZE; ++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());
68		}
69
70		/**
#	Line 100 | Line 100 | public class LinkedListTest extends JSR1
100		* offer(null) succeeds
101		*/
102		public void testOfferNull() {
103	<	try {
104	<	LinkedList q = new LinkedList();
105	<	q.offer(null);
106	<	} catch (NullPointerException ie) {
107	<	unexpectedException();
108	<	}
103	>	LinkedList q = new LinkedList();
104	>	q.offer(null);
105		}
106
107		/**
#	Line 136 | Line 132 | public class LinkedListTest extends JSR1
132		LinkedList q = new LinkedList();
133		q.addAll(null);
134		shouldThrow();
135	<	}
140	<	catch (NullPointerException success) {}
135	>	} catch (NullPointerException success) {}
136		}
137
138		/**
139		* Queue contains all elements, in traversal order, of successful addAll
140		*/
141		public void testAddAll5() {
142	<	try {
143	<	Integer[] empty = new Integer[0];
144	<	Integer[] ints = new Integer[SIZE];
145	<	for (int i = 0; i < SIZE; ++i)
146	<	ints[i] = new Integer(i);
147	<	LinkedList q = new LinkedList();
148	<	assertFalse(q.addAll(Arrays.asList(empty)));
149	<	assertTrue(q.addAll(Arrays.asList(ints)));
150	<	for (int i = 0; i < SIZE; ++i)
156	<	assertEquals(ints[i], q.poll());
157	<	}
158	<	finally {}
142	>	Integer[] empty = new Integer[0];
143	>	Integer[] ints = new Integer[SIZE];
144	>	for (int i = 0; i < SIZE; ++i)
145	>	ints[i] = i;
146	>	LinkedList q = new LinkedList();
147	>	assertFalse(q.addAll(Arrays.asList(empty)));
148	>	assertTrue(q.addAll(Arrays.asList(ints)));
149	>	for (int i = 0; i < SIZE; ++i)
150	>	assertEquals(ints[i], q.poll());
151		}
152
153		/**
154		* addAll with too large an index throws IOOBE
155		*/
156		public void testAddAll2_IndexOutOfBoundsException() {
157	+	LinkedList l = new LinkedList();
158	+	l.add(new Object());
159	+	LinkedList m = new LinkedList();
160	+	m.add(new Object());
161		try {
166	–	LinkedList l = new LinkedList();
167	–	l.add(new Object());
168	–	LinkedList m = new LinkedList();
169	–	m.add(new Object());
162		l.addAll(4,m);
163		shouldThrow();
164	<	} catch (IndexOutOfBoundsException  success) {}
164	>	} catch (IndexOutOfBoundsException success) {}
165		}
166
167		/**
168		* addAll with negative index throws IOOBE
169		*/
170		public void testAddAll4_BadIndex() {
171	+	LinkedList l = new LinkedList();
172	+	l.add(new Object());
173	+	LinkedList m = new LinkedList();
174	+	m.add(new Object());
175		try {
180	–	LinkedList l = new LinkedList();
181	–	l.add(new Object());
182	–	LinkedList m = new LinkedList();
183	–	m.add(new Object());
176		l.addAll(-1,m);
177		shouldThrow();
178	<	} catch (IndexOutOfBoundsException  success) {}
178	>	} catch (IndexOutOfBoundsException success) {}
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 217 | 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();
217		shouldThrow();
218	<	}
227	<	catch (NoSuchElementException success) {}
218	>	} catch (NoSuchElementException success) {}
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();
231		shouldThrow();
232	<	} catch (NoSuchElementException success) {
242	<	}
232	>	} catch (NoSuchElementException success) {}
233		}
234
235		/**
#	Line 247 | 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 277 | 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 292 | 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 326 | Line 322 | public class LinkedListTest extends JSR1
322		assertTrue(q.removeAll(p));
323		assertEquals(SIZE-i, q.size());
324		for (int j = 0; j < i; ++j) {
325	<	Integer I = (Integer)(p.remove());
326	<	assertFalse(q.contains(I));
325	>	Integer x = (Integer)(p.remove());
326	>	assertFalse(q.contains(x));
327		}
328		}
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();
341	–	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();
364	<	l.add(new Object());
365	<	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();
376	<	l.add(new Integer(5));
377	<	Object o[] = l.toArray(new String[10] );
372	>	l.toArray(new String[10]);
373		shouldThrow();
374	<	} catch (ArrayStoreException  success) {}
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);
387	–	int i = 0;
382		Iterator it = q.iterator();
383	<	while (it.hasNext()) {
383	>	int i;
384	>	for (i = 0; it.hasNext(); i++)
385		assertTrue(q.contains(it.next()));
391	–	++i;
392	–	}
386		assertEquals(i, SIZE);
387	+	assertIteratorExhausted(it);
388	+	}
389	+
390	+	/**
391	+	* iterator of empty collection has no elements
392	+	*/
393	+	public void testEmptyIterator() {
394	+	assertIteratorExhausted(new LinkedList().iterator());
395		}
396
397		/**
398	<	*  iterator ordering is FIFO
398	>	* iterator ordering is FIFO
399		*/
400		public void testIteratorOrdering() {
401		final LinkedList q = new LinkedList();
#	Line 403 | Line 404 | public class LinkedListTest extends JSR1
404		q.add(new Integer(3));
405		int k = 0;
406		for (Iterator it = q.iterator(); it.hasNext();) {
407	<	int i = ((Integer)(it.next())).intValue();
407	<	assertEquals(++k, i);
407	>	assertEquals(++k, it.next());
408		}
409
410		assertEquals(3, k);
#	Line 413 | Line 413 | public class LinkedListTest extends JSR1
413		/**
414		* iterator.remove removes current element
415		*/
416	<	public void testIteratorRemove () {
416	>	public void testIteratorRemove() {
417		final LinkedList q = new LinkedList();
418		q.add(new Integer(1));
419		q.add(new Integer(2));
420		q.add(new Integer(3));
421		Iterator it = q.iterator();
422	<	it.next();
422	>	assertEquals(1, it.next());
423		it.remove();
424		it = q.iterator();
425	<	assertEquals(it.next(), new Integer(2));
426	<	assertEquals(it.next(), new Integer(3));
425	>	assertEquals(2, it.next());
426	>	assertEquals(3, it.next());
427		assertFalse(it.hasNext());
428		}
429
430		/**
431	<	*  Descending iterator iterates through all elements
431	>	* Descending iterator iterates through all elements
432		*/
433		public void testDescendingIterator() {
434		LinkedList q = populatedQueue(SIZE);
#	Line 442 | Line 442 | public class LinkedListTest extends JSR1
442		assertFalse(it.hasNext());
443		try {
444		it.next();
445	<	} catch (NoSuchElementException success) {
446	<	}
445	>	shouldThrow();
446	>	} catch (NoSuchElementException success) {}
447		}
448
449		/**
450	<	*  Descending iterator ordering is reverse FIFO
450	>	* Descending iterator ordering is reverse FIFO
451		*/
452		public void testDescendingIteratorOrdering() {
453		final LinkedList q = new LinkedList();
#	Line 456 | Line 456 | public class LinkedListTest extends JSR1
456		q.add(new Integer(1));
457		int k = 0;
458		for (Iterator it = q.descendingIterator(); it.hasNext();) {
459	<	int i = ((Integer)(it.next())).intValue();
460	<	assertEquals(++k, i);
459	>	assertEquals(++k, it.next());
460		}
461
462		assertEquals(3, k);
#	Line 466 | Line 465 | public class LinkedListTest extends JSR1
465		/**
466		* descendingIterator.remove removes current element
467		*/
468	<	public void testDescendingIteratorRemove () {
468	>	public void testDescendingIteratorRemove() {
469		final LinkedList q = new LinkedList();
470	<	q.add(new Integer(3));
471	<	q.add(new Integer(2));
472	<	q.add(new Integer(1));
470	>	q.add(three);
471	>	q.add(two);
472	>	q.add(one);
473		Iterator it = q.descendingIterator();
474		it.next();
475		it.remove();
476		it = q.descendingIterator();
477	<	assertEquals(it.next(), new Integer(2));
478	<	assertEquals(it.next(), new Integer(3));
477	>	assertSame(it.next(), two);
478	>	assertSame(it.next(), three);
479		assertFalse(it.hasNext());
480		}
481
483	–
482		/**
483		* toString contains toStrings of elements
484		*/
#	Line 488 | Line 486 | public class LinkedListTest extends JSR1
486		LinkedList q = populatedQueue(SIZE);
487		String s = q.toString();
488		for (int i = 0; i < SIZE; ++i) {
489	<	assertTrue(s.indexOf(String.valueOf(i)) >= 0);
489	>	assertTrue(s.contains(String.valueOf(i)));
490		}
491		}
492
#	Line 498 | Line 496 | public class LinkedListTest extends JSR1
496		public void testAddFirst() {
497		LinkedList q = populatedQueue(3);
498		q.addFirst(four);
499	<	assertEquals(four,q.peek());
499	>	assertSame(four, q.peek());
500		}
501
502		/**
#	Line 506 | Line 504 | public class LinkedListTest extends JSR1
504		*/
505		public void testPush() {
506		LinkedList q = populatedQueue(3);
509	–	q.pollLast();
507		q.push(four);
508	<	assertEquals(four,q.peekFirst());
508	>	assertSame(four, q.peekFirst());
509		}
510
511		/**
512	<	*  pop removes next element, or throws NSEE if empty
512	>	* pop removes next element, or throws NSEE if empty
513		*/
514		public void testPop() {
515		LinkedList q = populatedQueue(SIZE);
516		for (int i = 0; i < SIZE; ++i) {
517	<	assertEquals(i, ((Integer)q.pop()).intValue());
517	>	assertEquals(i, q.pop());
518		}
519		try {
520		q.pop();
521		shouldThrow();
522	<	} catch (NoSuchElementException success) {
526	<	}
522	>	} catch (NoSuchElementException success) {}
523		}
524
525		/**
#	Line 545 | Line 541 | public class LinkedListTest extends JSR1
541		}
542
543		/**
544	<	*  pollLast succeeds unless empty
544	>	* pollLast succeeds unless empty
545		*/
546		public void testPollLast() {
547		LinkedList q = populatedQueue(SIZE);
548		for (int i = SIZE-1; i >= 0; --i) {
549	<	assertEquals(i, ((Integer)q.pollLast()).intValue());
549	>	assertEquals(i, q.pollLast());
550		}
551		assertNull(q.pollLast());
552		}
553
554		/**
555	<	*  peekFirst returns next element, or null if empty
555	>	* peekFirst returns next element, or null if empty
556		*/
557		public void testPeekFirst() {
558		LinkedList q = populatedQueue(SIZE);
559		for (int i = 0; i < SIZE; ++i) {
560	<	assertEquals(i, ((Integer)q.peekFirst()).intValue());
561	<	q.pollFirst();
560	>	assertEquals(i, q.peekFirst());
561	>	assertEquals(i, q.pollFirst());
562		assertTrue(q.peekFirst() == null ||
563	<	i != ((Integer)q.peekFirst()).intValue());
563	>	!q.peekFirst().equals(i));
564		}
565		assertNull(q.peekFirst());
566		}
567
572	–
568		/**
569	<	*  peekLast returns next element, or null if empty
569	>	* peekLast returns next element, or null if empty
570		*/
571		public void testPeekLast() {
572		LinkedList q = populatedQueue(SIZE);
573		for (int i = SIZE-1; i >= 0; --i) {
574	<	assertEquals(i, ((Integer)q.peekLast()).intValue());
575	<	q.pollLast();
574	>	assertEquals(i, q.peekLast());
575	>	assertEquals(i, q.pollLast());
576		assertTrue(q.peekLast() == null ||
577	<	i != ((Integer)q.peekLast()).intValue());
577	>	!q.peekLast().equals(i));
578		}
579		assertNull(q.peekLast());
580		}
#	Line 587 | Line 582 | public class LinkedListTest extends JSR1
582		public void testFirstElement() {
583		LinkedList q = populatedQueue(SIZE);
584		for (int i = 0; i < SIZE; ++i) {
585	<	assertEquals(i, ((Integer)q.getFirst()).intValue());
586	<	q.pollFirst();
585	>	assertEquals(i, q.getFirst());
586	>	assertEquals(i, q.pollFirst());
587		}
588		try {
589		q.getFirst();
590		shouldThrow();
591	<	}
597	<	catch (NoSuchElementException success) {}
591	>	} catch (NoSuchElementException success) {}
592		}
593
594		/**
595	<	*  getLast returns next element, or throws NSEE if empty
595	>	* getLast returns next element, or throws NSEE if empty
596		*/
597		public void testLastElement() {
598		LinkedList q = populatedQueue(SIZE);
599		for (int i = SIZE-1; i >= 0; --i) {
600	<	assertEquals(i, ((Integer)q.getLast()).intValue());
601	<	q.pollLast();
600	>	assertEquals(i, q.getLast());
601	>	assertEquals(i, q.pollLast());
602		}
603		try {
604		q.getLast();
605		shouldThrow();
606	<	}
613	<	catch (NoSuchElementException success) {}
606	>	} catch (NoSuchElementException success) {}
607		assertNull(q.peekLast());
608		}
609
#	Line 619 | Line 612 | public class LinkedListTest extends JSR1
612		*/
613		public void testRemoveFirstOccurrence() {
614		LinkedList q = populatedQueue(SIZE);
615	<	for (int i = 1; i < SIZE; i+=2) {
615	>	for (int i = 1; i < SIZE; i += 2) {
616		assertTrue(q.removeFirstOccurrence(new Integer(i)));
617		}
618	<	for (int i = 0; i < SIZE; i+=2) {
618	>	for (int i = 0; i < SIZE; i += 2) {
619		assertTrue(q.removeFirstOccurrence(new Integer(i)));
620		assertFalse(q.removeFirstOccurrence(new Integer(i+1)));
621		}
#	Line 634 | Line 627 | public class LinkedListTest extends JSR1
627		*/
628		public void testRemoveLastOccurrence() {
629		LinkedList q = populatedQueue(SIZE);
630	<	for (int i = 1; i < SIZE; i+=2) {
630	>	for (int i = 1; i < SIZE; i += 2) {
631		assertTrue(q.removeLastOccurrence(new Integer(i)));
632		}
633	<	for (int i = 0; i < SIZE; i+=2) {
633	>	for (int i = 0; i < SIZE; i += 2) {
634		assertTrue(q.removeLastOccurrence(new Integer(i)));
635		assertFalse(q.removeLastOccurrence(new Integer(i+1)));
636		}

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