ViewVC Help

View File | Revision Log | Show Annotations | Download File | Root Listing

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

Comparing jsr166/src/test/tck/ConcurrentLinkedQueueTest.java (file contents):
Revision 1.5 by dl, Sun Oct 5 23:00:40 2003 UTC vs.
Revision 1.41 by jsr166, Sun Oct 16 20:16:36 2016 UTC

#	Line 1 | Line 1
1		/*
2	<	* Written by members of JCP JSR-166 Expert Group and released to the
3	<	* public domain. Use, modify, and redistribute this code in any way
4	<	* without acknowledgement. Other contributors include Andrew Wright,
5	<	* Jeffrey Hayes, Pat Fischer, Mike Judd.
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/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.*;
12	<	import java.io.*;
9	>	import java.util.Arrays;
10	>	import java.util.Collection;
11	>	import java.util.Iterator;
12	>	import java.util.NoSuchElementException;
13	>	import java.util.Queue;
14	>	import java.util.concurrent.ConcurrentLinkedQueue;
15	>
16	>	import junit.framework.Test;
17	>	import junit.framework.TestSuite;
18
19		public class ConcurrentLinkedQueueTest extends JSR166TestCase {
20
21		public static void main(String[] args) {
22	<	junit.textui.TestRunner.run (suite());
22	>	main(suite(), args);
23		}
24
25		public static Test suite() {
26	<	return new TestSuite(ConcurrentLinkedQueueTest.class);
26	>	class Implementation implements CollectionImplementation {
27	>	public Class<?> klazz() { return ConcurrentLinkedQueue.class; }
28	>	public Collection emptyCollection() { return new ConcurrentLinkedQueue(); }
29	>	public Object makeElement(int i) { return i; }
30	>	public boolean isConcurrent() { return true; }
31	>	public boolean permitsNulls() { return false; }
32	>	}
33	>	return newTestSuite(ConcurrentLinkedQueueTest.class,
34	>	CollectionTest.testSuite(new Implementation()));
35		}
36
37		/**
38	<	* Create a queue of given size containing consecutive
38	>	* Returns a new queue of given size containing consecutive
39		* Integers 0 ... n.
40		*/
41	<	private ConcurrentLinkedQueue populatedQueue(int n) {
42	<	ConcurrentLinkedQueue q = new ConcurrentLinkedQueue();
41	>	private ConcurrentLinkedQueue<Integer> populatedQueue(int n) {
42	>	ConcurrentLinkedQueue<Integer> q = new ConcurrentLinkedQueue<Integer>();
43		assertTrue(q.isEmpty());
44	<	for(int i = 0; i < n; ++i)
45	<	assertTrue(q.offer(new Integer(i)));
44	>	for (int i = 0; i < n; ++i)
45	>	assertTrue(q.offer(new Integer(i)));
46		assertFalse(q.isEmpty());
47	<	assertEquals(n, q.size());
47	>	assertEquals(n, q.size());
48		return q;
49		}
50	<
50	>
51		/**
52		* new queue is empty
53		*/
#	Line 42 | Line 56 | public class ConcurrentLinkedQueueTest e
56		}
57
58		/**
59	<	*  Initializing from null Collection throws NPE
59	>	* Initializing from null Collection throws NPE
60		*/
61		public void testConstructor3() {
62		try {
63	<	ConcurrentLinkedQueue q = new ConcurrentLinkedQueue((Collection)null);
63	>	new ConcurrentLinkedQueue((Collection)null);
64		shouldThrow();
65	<	}
52	<	catch (NullPointerException success) {}
65	>	} catch (NullPointerException success) {}
66		}
67
68		/**
#	Line 57 | Line 70 | public class ConcurrentLinkedQueueTest e
70		*/
71		public void testConstructor4() {
72		try {
73	<	Integer[] ints = new Integer[SIZE];
61	<	ConcurrentLinkedQueue q = new ConcurrentLinkedQueue(Arrays.asList(ints));
73	>	new ConcurrentLinkedQueue(Arrays.asList(new Integer[SIZE]));
74		shouldThrow();
75	<	}
64	<	catch (NullPointerException success) {}
75	>	} catch (NullPointerException success) {}
76		}
77
78		/**
79		* Initializing from Collection with some null elements throws NPE
80		*/
81		public void testConstructor5() {
82	+	Integer[] ints = new Integer[SIZE];
83	+	for (int i = 0; i < SIZE - 1; ++i)
84	+	ints[i] = new Integer(i);
85		try {
86	<	Integer[] ints = new Integer[SIZE];
73	<	for (int i = 0; i < SIZE-1; ++i)
74	<	ints[i] = new Integer(i);
75	<	ConcurrentLinkedQueue q = new ConcurrentLinkedQueue(Arrays.asList(ints));
86	>	new ConcurrentLinkedQueue(Arrays.asList(ints));
87		shouldThrow();
88	<	}
78	<	catch (NullPointerException success) {}
88	>	} catch (NullPointerException success) {}
89		}
90
91		/**
92		* Queue contains all elements of collection used to initialize
93		*/
94		public void testConstructor6() {
95	<	try {
96	<	Integer[] ints = new Integer[SIZE];
97	<	for (int i = 0; i < SIZE; ++i)
98	<	ints[i] = new Integer(i);
99	<	ConcurrentLinkedQueue q = new ConcurrentLinkedQueue(Arrays.asList(ints));
100	<	for (int i = 0; i < SIZE; ++i)
91	<	assertEquals(ints[i], q.poll());
92	<	}
93	<	finally {}
95	>	Integer[] ints = new Integer[SIZE];
96	>	for (int i = 0; i < SIZE; ++i)
97	>	ints[i] = new Integer(i);
98	>	ConcurrentLinkedQueue q = new ConcurrentLinkedQueue(Arrays.asList(ints));
99	>	for (int i = 0; i < SIZE; ++i)
100	>	assertEquals(ints[i], q.poll());
101		}
102
103		/**
#	Line 113 | Line 120 | public class ConcurrentLinkedQueueTest e
120		public void testSize() {
121		ConcurrentLinkedQueue q = populatedQueue(SIZE);
122		for (int i = 0; i < SIZE; ++i) {
123	<	assertEquals(SIZE-i, q.size());
123	>	assertEquals(SIZE - i, q.size());
124		q.remove();
125		}
126		for (int i = 0; i < SIZE; ++i) {
#	Line 126 | Line 133 | public class ConcurrentLinkedQueueTest e
133		* offer(null) throws NPE
134		*/
135		public void testOfferNull() {
136	<	try {
137	<	ConcurrentLinkedQueue q = new ConcurrentLinkedQueue();
136	>	ConcurrentLinkedQueue q = new ConcurrentLinkedQueue();
137	>	try {
138		q.offer(null);
139		shouldThrow();
140	<	} catch (NullPointerException success) { }
140	>	} catch (NullPointerException success) {}
141		}
142
143		/**
144		* add(null) throws NPE
145		*/
146		public void testAddNull() {
147	<	try {
148	<	ConcurrentLinkedQueue q = new ConcurrentLinkedQueue();
147	>	ConcurrentLinkedQueue q = new ConcurrentLinkedQueue();
148	>	try {
149		q.add(null);
150		shouldThrow();
151	<	} catch (NullPointerException success) { }
151	>	} catch (NullPointerException success) {}
152		}
153
147	–
154		/**
155		* Offer returns true
156		*/
#	Line 169 | Line 175 | public class ConcurrentLinkedQueueTest e
175		* addAll(null) throws NPE
176		*/
177		public void testAddAll1() {
178	+	ConcurrentLinkedQueue q = new ConcurrentLinkedQueue();
179		try {
173	–	ConcurrentLinkedQueue q = new ConcurrentLinkedQueue();
180		q.addAll(null);
181		shouldThrow();
182	<	}
177	<	catch (NullPointerException success) {}
182	>	} catch (NullPointerException success) {}
183		}
184
185		/**
186		* addAll(this) throws IAE
187		*/
188		public void testAddAllSelf() {
189	+	ConcurrentLinkedQueue q = populatedQueue(SIZE);
190		try {
185	–	ConcurrentLinkedQueue q = populatedQueue(SIZE);
191		q.addAll(q);
192		shouldThrow();
193	<	}
189	<	catch (IllegalArgumentException success) {}
193	>	} catch (IllegalArgumentException success) {}
194		}
195
196		/**
197		* addAll of a collection with null elements throws NPE
198		*/
199		public void testAddAll2() {
200	+	ConcurrentLinkedQueue q = new ConcurrentLinkedQueue();
201		try {
202	<	ConcurrentLinkedQueue q = new ConcurrentLinkedQueue();
198	<	Integer[] ints = new Integer[SIZE];
199	<	q.addAll(Arrays.asList(ints));
202	>	q.addAll(Arrays.asList(new Integer[SIZE]));
203		shouldThrow();
204	<	}
202	<	catch (NullPointerException success) {}
204	>	} catch (NullPointerException success) {}
205		}
206	+
207		/**
208	<	*  addAll of a collection with any null elements throws NPE after
208	>	* addAll of a collection with any null elements throws NPE after
209		* possibly adding some elements
210		*/
211		public void testAddAll3() {
212	+	ConcurrentLinkedQueue q = new ConcurrentLinkedQueue();
213	+	Integer[] ints = new Integer[SIZE];
214	+	for (int i = 0; i < SIZE - 1; ++i)
215	+	ints[i] = new Integer(i);
216		try {
210	–	ConcurrentLinkedQueue q = new ConcurrentLinkedQueue();
211	–	Integer[] ints = new Integer[SIZE];
212	–	for (int i = 0; i < SIZE-1; ++i)
213	–	ints[i] = new Integer(i);
217		q.addAll(Arrays.asList(ints));
218		shouldThrow();
219	<	}
217	<	catch (NullPointerException success) {}
219	>	} catch (NullPointerException success) {}
220		}
221
222		/**
223		* Queue contains all elements, in traversal order, of successful addAll
224		*/
225		public void testAddAll5() {
226	<	try {
227	<	Integer[] empty = new Integer[0];
228	<	Integer[] ints = new Integer[SIZE];
229	<	for (int i = 0; i < SIZE; ++i)
230	<	ints[i] = new Integer(i);
231	<	ConcurrentLinkedQueue q = new ConcurrentLinkedQueue();
232	<	assertFalse(q.addAll(Arrays.asList(empty)));
233	<	assertTrue(q.addAll(Arrays.asList(ints)));
234	<	for (int i = 0; i < SIZE; ++i)
233	<	assertEquals(ints[i], q.poll());
234	<	}
235	<	finally {}
226	>	Integer[] empty = new Integer[0];
227	>	Integer[] ints = new Integer[SIZE];
228	>	for (int i = 0; i < SIZE; ++i)
229	>	ints[i] = new Integer(i);
230	>	ConcurrentLinkedQueue q = new ConcurrentLinkedQueue();
231	>	assertFalse(q.addAll(Arrays.asList(empty)));
232	>	assertTrue(q.addAll(Arrays.asList(ints)));
233	>	for (int i = 0; i < SIZE; ++i)
234	>	assertEquals(ints[i], q.poll());
235		}
236
237		/**
#	Line 241 | Line 240 | public class ConcurrentLinkedQueueTest e
240		public void testPoll() {
241		ConcurrentLinkedQueue q = populatedQueue(SIZE);
242		for (int i = 0; i < SIZE; ++i) {
243	<	assertEquals(i, ((Integer)q.poll()).intValue());
243	>	assertEquals(i, q.poll());
244		}
245	<	assertNull(q.poll());
245	>	assertNull(q.poll());
246		}
247
248		/**
#	Line 252 | Line 251 | public class ConcurrentLinkedQueueTest e
251		public void testPeek() {
252		ConcurrentLinkedQueue q = populatedQueue(SIZE);
253		for (int i = 0; i < SIZE; ++i) {
254	<	assertEquals(i, ((Integer)q.peek()).intValue());
255	<	q.poll();
254	>	assertEquals(i, q.peek());
255	>	assertEquals(i, q.poll());
256		assertTrue(q.peek() == null ||
257	<	i != ((Integer)q.peek()).intValue());
257	>	!q.peek().equals(i));
258		}
259	<	assertNull(q.peek());
259	>	assertNull(q.peek());
260		}
261
262		/**
#	Line 266 | Line 265 | public class ConcurrentLinkedQueueTest e
265		public void testElement() {
266		ConcurrentLinkedQueue q = populatedQueue(SIZE);
267		for (int i = 0; i < SIZE; ++i) {
268	<	assertEquals(i, ((Integer)q.element()).intValue());
269	<	q.poll();
268	>	assertEquals(i, q.element());
269	>	assertEquals(i, q.poll());
270		}
271		try {
272		q.element();
273		shouldThrow();
274	<	}
276	<	catch (NoSuchElementException success) {}
274	>	} catch (NoSuchElementException success) {}
275		}
276
277		/**
278	<	*  remove removes next element, or throws NSEE if empty
278	>	* remove removes next element, or throws NSEE if empty
279		*/
280		public void testRemove() {
281		ConcurrentLinkedQueue q = populatedQueue(SIZE);
282		for (int i = 0; i < SIZE; ++i) {
283	<	assertEquals(i, ((Integer)q.remove()).intValue());
283	>	assertEquals(i, q.remove());
284		}
285		try {
286		q.remove();
287		shouldThrow();
288	<	} catch (NoSuchElementException success){
291	<	}
288	>	} catch (NoSuchElementException success) {}
289		}
290
291		/**
#	Line 296 | Line 293 | public class ConcurrentLinkedQueueTest e
293		*/
294		public void testRemoveElement() {
295		ConcurrentLinkedQueue q = populatedQueue(SIZE);
296	<	for (int i = 1; i < SIZE; i+=2) {
297	<	assertTrue(q.remove(new Integer(i)));
298	<	}
299	<	for (int i = 0; i < SIZE; i+=2) {
300	<	assertTrue(q.remove(new Integer(i)));
301	<	assertFalse(q.remove(new Integer(i+1)));
296	>	for (int i = 1; i < SIZE; i += 2) {
297	>	assertTrue(q.contains(i));
298	>	assertTrue(q.remove(i));
299	>	assertFalse(q.contains(i));
300	>	assertTrue(q.contains(i - 1));
301	>	}
302	>	for (int i = 0; i < SIZE; i += 2) {
303	>	assertTrue(q.contains(i));
304	>	assertTrue(q.remove(i));
305	>	assertFalse(q.contains(i));
306	>	assertFalse(q.remove(i + 1));
307	>	assertFalse(q.contains(i + 1));
308		}
309		assertTrue(q.isEmpty());
310		}
311	<
311	>
312		/**
313		* contains(x) reports true when elements added but not yet removed
314		*/
#	Line 360 | Line 363 | public class ConcurrentLinkedQueueTest e
363		assertTrue(changed);
364
365		assertTrue(q.containsAll(p));
366	<	assertEquals(SIZE-i, q.size());
366	>	assertEquals(SIZE - i, q.size());
367		p.remove();
368		}
369		}
#	Line 373 | Line 376 | public class ConcurrentLinkedQueueTest e
376		ConcurrentLinkedQueue q = populatedQueue(SIZE);
377		ConcurrentLinkedQueue p = populatedQueue(i);
378		assertTrue(q.removeAll(p));
379	<	assertEquals(SIZE-i, q.size());
379	>	assertEquals(SIZE - i, q.size());
380		for (int j = 0; j < i; ++j) {
381	<	Integer I = (Integer)(p.remove());
382	<	assertFalse(q.contains(I));
381	>	Integer x = (Integer)(p.remove());
382	>	assertFalse(q.contains(x));
383		}
384		}
385		}
386
387		/**
388	<	* toArray contains all elements
388	>	* toArray contains all elements in FIFO order
389		*/
390		public void testToArray() {
391		ConcurrentLinkedQueue q = populatedQueue(SIZE);
392	<	Object[] o = q.toArray();
393	<	Arrays.sort(o);
394	<	for(int i = 0; i < o.length; i++)
392	<	assertEquals(o[i], q.poll());
392	>	Object[] o = q.toArray();
393	>	for (int i = 0; i < o.length; i++)
394	>	assertSame(o[i], q.poll());
395		}
396
397		/**
398	<	*  toArray(a) contains all elements
398	>	* toArray(a) contains all elements in FIFO order
399		*/
400		public void testToArray2() {
401	<	ConcurrentLinkedQueue q = populatedQueue(SIZE);
402	<	Integer[] ints = new Integer[SIZE];
403	<	ints = (Integer[])q.toArray(ints);
404	<	Arrays.sort(ints);
405	<	for(int i = 0; i < ints.length; i++)
406	<	assertEquals(ints[i], q.poll());
401	>	ConcurrentLinkedQueue<Integer> q = populatedQueue(SIZE);
402	>	Integer[] ints = new Integer[SIZE];
403	>	Integer[] array = q.toArray(ints);
404	>	assertSame(ints, array);
405	>	for (int i = 0; i < ints.length; i++)
406	>	assertSame(ints[i], q.poll());
407		}
408
409		/**
410	<	* toArray(null) throws NPE
410	>	* toArray(null) throws NullPointerException
411		*/
412	<	public void testToArray_BadArg() {
413	<	try {
414	<	ConcurrentLinkedQueue q = populatedQueue(SIZE);
415	<	Object o[] = q.toArray(null);
416	<	shouldThrow();
417	<	} catch(NullPointerException success){}
412	>	public void testToArray_NullArg() {
413	>	ConcurrentLinkedQueue q = populatedQueue(SIZE);
414	>	try {
415	>	q.toArray(null);
416	>	shouldThrow();
417	>	} catch (NullPointerException success) {}
418		}
419
420		/**
421	<	* toArray with incompatable array type throws CCE
421	>	* toArray(incompatible array type) throws ArrayStoreException
422		*/
423		public void testToArray1_BadArg() {
424	<	try {
425	<	ConcurrentLinkedQueue q = populatedQueue(SIZE);
426	<	Object o[] = q.toArray(new String[10] );
427	<	shouldThrow();
428	<	} catch(ArrayStoreException  success){}
424	>	ConcurrentLinkedQueue q = populatedQueue(SIZE);
425	>	try {
426	>	q.toArray(new String[10]);
427	>	shouldThrow();
428	>	} catch (ArrayStoreException success) {}
429		}
430	<
430	>
431		/**
432	<	*  iterator iterates through all elements
432	>	* iterator iterates through all elements
433		*/
434		public void testIterator() {
435		ConcurrentLinkedQueue q = populatedQueue(SIZE);
436	<	int i = 0;
437	<	Iterator it = q.iterator();
438	<	while(it.hasNext()) {
436	>	Iterator it = q.iterator();
437	>	int i;
438	>	for (i = 0; it.hasNext(); i++)
439		assertTrue(q.contains(it.next()));
438	–	++i;
439	–	}
440		assertEquals(i, SIZE);
441	+	assertIteratorExhausted(it);
442	+	}
443	+
444	+	/**
445	+	* iterator of empty collection has no elements
446	+	*/
447	+	public void testEmptyIterator() {
448	+	assertIteratorExhausted(new ConcurrentLinkedQueue().iterator());
449		}
450
451		/**
#	Line 451 | Line 459 | public class ConcurrentLinkedQueueTest e
459
460		int k = 0;
461		for (Iterator it = q.iterator(); it.hasNext();) {
462	<	int i = ((Integer)(it.next())).intValue();
455	<	assertEquals(++k, i);
462	>	assertEquals(++k, it.next());
463		}
464
465		assertEquals(3, k);
#	Line 461 | Line 468 | public class ConcurrentLinkedQueueTest e
468		/**
469		* Modifications do not cause iterators to fail
470		*/
471	<	public void testWeaklyConsistentIteration () {
471	>	public void testWeaklyConsistentIteration() {
472		final ConcurrentLinkedQueue q = new ConcurrentLinkedQueue();
473		q.add(one);
474		q.add(two);
475		q.add(three);
476
477	<	try {
478	<	for (Iterator it = q.iterator(); it.hasNext();) {
479	<	q.remove();
473	<	it.next();
474	<	}
475	<	}
476	<	catch (ConcurrentModificationException e) {
477	<	shouldThrow();
477	>	for (Iterator it = q.iterator(); it.hasNext();) {
478	>	q.remove();
479	>	it.next();
480		}
481
482		assertEquals("queue should be empty again", 0, q.size());
#	Line 483 | Line 485 | public class ConcurrentLinkedQueueTest e
485		/**
486		* iterator.remove removes current element
487		*/
488	<	public void testIteratorRemove () {
488	>	public void testIteratorRemove() {
489		final ConcurrentLinkedQueue q = new ConcurrentLinkedQueue();
490		q.add(one);
491		q.add(two);
#	Line 492 | Line 494 | public class ConcurrentLinkedQueueTest e
494		it.next();
495		it.remove();
496		it = q.iterator();
497	<	assertEquals(it.next(), two);
498	<	assertEquals(it.next(), three);
497	>	assertSame(it.next(), two);
498	>	assertSame(it.next(), three);
499		assertFalse(it.hasNext());
500		}
501
500	–
502		/**
503		* toString contains toStrings of elements
504		*/
#	Line 505 | Line 506 | public class ConcurrentLinkedQueueTest e
506		ConcurrentLinkedQueue q = populatedQueue(SIZE);
507		String s = q.toString();
508		for (int i = 0; i < SIZE; ++i) {
509	<	assertTrue(s.indexOf(String.valueOf(i)) >= 0);
509	>	assertTrue(s.contains(String.valueOf(i)));
510		}
511	<	}
511	>	}
512
513		/**
514		* A deserialized serialized queue has same elements in same order
515		*/
516	<	public void testSerialization() {
517	<	ConcurrentLinkedQueue q = populatedQueue(SIZE);
518	<	try {
519	<	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
520	<	ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout));
521	<	out.writeObject(q);
522	<	out.close();
523	<
524	<	ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray());
525	<	ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin));
526	<	ConcurrentLinkedQueue r = (ConcurrentLinkedQueue)in.readObject();
526	<	assertEquals(q.size(), r.size());
527	<	while (!q.isEmpty())
528	<	assertEquals(q.remove(), r.remove());
529	<	} catch(Exception e){
530	<	unexpectedException();
516	>	public void testSerialization() throws Exception {
517	>	Queue x = populatedQueue(SIZE);
518	>	Queue y = serialClone(x);
519	>
520	>	assertNotSame(x, y);
521	>	assertEquals(x.size(), y.size());
522	>	assertEquals(x.toString(), y.toString());
523	>	assertTrue(Arrays.equals(x.toArray(), y.toArray()));
524	>	while (!x.isEmpty()) {
525	>	assertFalse(y.isEmpty());
526	>	assertEquals(x.remove(), y.remove());
527		}
528	+	assertTrue(y.isEmpty());
529		}
530
531	+	/**
532	+	* remove(null), contains(null) always return false
533	+	*/
534	+	public void testNeverContainsNull() {
535	+	Collection<?>[] qs = {
536	+	new ConcurrentLinkedQueue<Object>(),
537	+	populatedQueue(2),
538	+	};
539	+
540	+	for (Collection<?> q : qs) {
541	+	assertFalse(q.contains(null));
542	+	assertFalse(q.remove(null));
543	+	}
544	+	}
545		}

Diff Legend

–	Removed lines
+	Added lines
<	Changed lines
>	Changed lines