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

Comparing jsr166/src/test/tck/PriorityQueueTest.java (file contents):
Revision 1.4 by dl, Sat Sep 20 00:31:57 2003 UTC vs.
Revision 1.20 by jsr166, Thu Nov 18 20:21:53 2010 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/licenses/publicdomain
5	>	* Other contributors include Andrew Wright, Jeffrey Hayes,
6	>	* Pat Fisher, Mike Judd.
7		*/
8
9		import junit.framework.*;
#	Line 11 | Line 12 | import java.util.concurrent.*;
12		import java.io.*;
13
14		public class PriorityQueueTest extends JSR166TestCase {
14	–
15		public static void main(String[] args) {
16	<	junit.textui.TestRunner.run (suite());
16	>	junit.textui.TestRunner.run(suite());
17		}
18	–
18		public static Test suite() {
19	<	return new TestSuite(PriorityQueueTest.class);
19	>	return new TestSuite(PriorityQueueTest.class);
20		}
21
22	<	static class MyReverseComparator implements Comparator {
22	>	static class MyReverseComparator implements Comparator {
23		public int compare(Object x, Object y) {
24	<	int i = ((Integer)x).intValue();
26	<	int j = ((Integer)y).intValue();
27	<	if (i < j) return 1;
28	<	if (i > j) return -1;
29	<	return 0;
24	>	return ((Comparable)y).compareTo(x);
25		}
26		}
27
33	–
28		/**
29		* Create a queue of given size containing consecutive
30		* Integers 0 ... n.
31		*/
32	<	private PriorityQueue populatedQueue(int n) {
33	<	PriorityQueue q = new PriorityQueue(n);
32	>	private PriorityQueue<Integer> populatedQueue(int n) {
33	>	PriorityQueue<Integer> q = new PriorityQueue<Integer>(n);
34		assertTrue(q.isEmpty());
35	<	for(int i = n-1; i >= 0; i-=2)
36	<	assertTrue(q.offer(new Integer(i)));
37	<	for(int i = (n & 1); i < n; i+=2)
38	<	assertTrue(q.offer(new Integer(i)));
35	>	for (int i = n-1; i >= 0; i-=2)
36	>	assertTrue(q.offer(new Integer(i)));
37	>	for (int i = (n & 1); i < n; i+=2)
38	>	assertTrue(q.offer(new Integer(i)));
39		assertFalse(q.isEmpty());
40	<	assertEquals(n, q.size());
40	>	assertEquals(n, q.size());
41		return q;
42		}
43	<
44	<	public void testConstructor1(){
43	>
44	>	/**
45	>	* A new queue has unbounded capacity
46	>	*/
47	>	public void testConstructor1() {
48		assertEquals(0, new PriorityQueue(SIZE).size());
49		}
50
51	<	public void testConstructor2(){
51	>	/**
52	>	* Constructor throws IAE if capacity argument nonpositive
53	>	*/
54	>	public void testConstructor2() {
55		try {
56		PriorityQueue q = new PriorityQueue(0);
57	<	fail("Cannot make zero-sized");
58	<	}
59	<	catch (IllegalArgumentException success) {}
57	>	shouldThrow();
58	>	} catch (IllegalArgumentException success) {}
59		}
60
61	+	/**
62	+	* Initializing from null Collection throws NPE
63	+	*/
64		public void testConstructor3() {
63	–
65		try {
66		PriorityQueue q = new PriorityQueue((Collection)null);
67	<	fail("Cannot make from null collection");
68	<	}
68	<	catch (NullPointerException success) {}
67	>	shouldThrow();
68	>	} catch (NullPointerException success) {}
69		}
70
71	<	public void testConstructor4(){
71	>	/**
72	>	* Initializing from Collection of null elements throws NPE
73	>	*/
74	>	public void testConstructor4() {
75		try {
76		Integer[] ints = new Integer[SIZE];
77		PriorityQueue q = new PriorityQueue(Arrays.asList(ints));
78	<	fail("Cannot make with null elements");
79	<	}
77	<	catch (NullPointerException success) {}
78	>	shouldThrow();
79	>	} catch (NullPointerException success) {}
80		}
81
82	<	public void testConstructor5(){
82	>	/**
83	>	* Initializing from Collection with some null elements throws NPE
84	>	*/
85	>	public void testConstructor5() {
86		try {
87		Integer[] ints = new Integer[SIZE];
88		for (int i = 0; i < SIZE-1; ++i)
89		ints[i] = new Integer(i);
90		PriorityQueue q = new PriorityQueue(Arrays.asList(ints));
91	<	fail("Cannot make with null elements");
92	<	}
88	<	catch (NullPointerException success) {}
91	>	shouldThrow();
92	>	} catch (NullPointerException success) {}
93		}
94
95	<	public void testConstructor6(){
96	<	try {
97	<	Integer[] ints = new Integer[SIZE];
98	<	for (int i = 0; i < SIZE; ++i)
99	<	ints[i] = new Integer(i);
100	<	PriorityQueue q = new PriorityQueue(Arrays.asList(ints));
101	<	for (int i = 0; i < SIZE; ++i)
102	<	assertEquals(ints[i], q.poll());
103	<	}
104	<	finally {}
95	>	/**
96	>	* Queue contains all elements of collection used to initialize
97	>	*/
98	>	public void testConstructor6() {
99	>	Integer[] ints = new Integer[SIZE];
100	>	for (int i = 0; i < SIZE; ++i)
101	>	ints[i] = new Integer(i);
102	>	PriorityQueue q = new PriorityQueue(Arrays.asList(ints));
103	>	for (int i = 0; i < SIZE; ++i)
104	>	assertEquals(ints[i], q.poll());
105		}
106
107	<	public void testConstructor7(){
108	<	try {
109	<	MyReverseComparator cmp = new MyReverseComparator();
110	<	PriorityQueue q = new PriorityQueue(SIZE, cmp);
111	<	assertEquals(cmp, q.comparator());
112	<	Integer[] ints = new Integer[SIZE];
113	<	for (int i = 0; i < SIZE; ++i)
114	<	ints[i] = new Integer(i);
115	<	q.addAll(Arrays.asList(ints));
116	<	for (int i = SIZE-1; i >= 0; --i)
117	<	assertEquals(ints[i], q.poll());
118	<	}
119	<	finally {}
107	>	/**
108	>	* The comparator used in constructor is used
109	>	*/
110	>	public void testConstructor7() {
111	>	MyReverseComparator cmp = new MyReverseComparator();
112	>	PriorityQueue q = new PriorityQueue(SIZE, cmp);
113	>	assertEquals(cmp, q.comparator());
114	>	Integer[] ints = new Integer[SIZE];
115	>	for (int i = 0; i < SIZE; ++i)
116	>	ints[i] = new Integer(i);
117	>	q.addAll(Arrays.asList(ints));
118	>	for (int i = SIZE-1; i >= 0; --i)
119	>	assertEquals(ints[i], q.poll());
120		}
121
122	+	/**
123	+	* isEmpty is true before add, false after
124	+	*/
125		public void testEmpty() {
126		PriorityQueue q = new PriorityQueue(2);
127		assertTrue(q.isEmpty());
#	Line 126 | Line 133 | public class PriorityQueueTest extends J
133		assertTrue(q.isEmpty());
134		}
135
136	+	/**
137	+	* size changes when elements added and removed
138	+	*/
139		public void testSize() {
140		PriorityQueue q = populatedQueue(SIZE);
141		for (int i = 0; i < SIZE; ++i) {
#	Line 138 | Line 148 | public class PriorityQueueTest extends J
148		}
149		}
150
151	<	public void testOfferNull(){
152	<	try {
151	>	/**
152	>	* offer(null) throws NPE
153	>	*/
154	>	public void testOfferNull() {
155	>	try {
156		PriorityQueue q = new PriorityQueue(1);
157		q.offer(null);
158	<	fail("should throw NPE");
159	<	} catch (NullPointerException success) { }
158	>	shouldThrow();
159	>	} catch (NullPointerException success) {}
160		}
161
162	+	/**
163	+	* add(null) throws NPE
164	+	*/
165	+	public void testAddNull() {
166	+	try {
167	+	PriorityQueue q = new PriorityQueue(1);
168	+	q.add(null);
169	+	shouldThrow();
170	+	} catch (NullPointerException success) {}
171	+	}
172	+
173	+	/**
174	+	* Offer of comparable element succeeds
175	+	*/
176		public void testOffer() {
177		PriorityQueue q = new PriorityQueue(1);
178	<	assertTrue(q.offer(new Integer(0)));
179	<	assertTrue(q.offer(new Integer(1)));
178	>	assertTrue(q.offer(zero));
179	>	assertTrue(q.offer(one));
180		}
181
182	+	/**
183	+	* Offer of non-Comparable throws CCE
184	+	*/
185		public void testOfferNonComparable() {
186		try {
187		PriorityQueue q = new PriorityQueue(1);
188		q.offer(new Object());
189		q.offer(new Object());
190		q.offer(new Object());
191	<	fail("should throw CCE");
192	<	}
163	<	catch(ClassCastException success) {}
191	>	shouldThrow();
192	>	} catch (ClassCastException success) {}
193		}
194
195	<	public void testAdd(){
195	>	/**
196	>	* add of comparable succeeds
197	>	*/
198	>	public void testAdd() {
199		PriorityQueue q = new PriorityQueue(SIZE);
200		for (int i = 0; i < SIZE; ++i) {
201		assertEquals(i, q.size());
#	Line 171 | Line 203 | public class PriorityQueueTest extends J
203		}
204		}
205
206	<	public void testAddAll1(){
206	>	/**
207	>	* addAll(null) throws NPE
208	>	*/
209	>	public void testAddAll1() {
210		try {
211		PriorityQueue q = new PriorityQueue(1);
212		q.addAll(null);
213	<	fail("Cannot add null collection");
214	<	}
180	<	catch (NullPointerException success) {}
213	>	shouldThrow();
214	>	} catch (NullPointerException success) {}
215		}
216	<	public void testAddAll2(){
216	>
217	>	/**
218	>	* addAll of a collection with null elements throws NPE
219	>	*/
220	>	public void testAddAll2() {
221		try {
222		PriorityQueue q = new PriorityQueue(SIZE);
223		Integer[] ints = new Integer[SIZE];
224		q.addAll(Arrays.asList(ints));
225	<	fail("Cannot add null elements");
226	<	}
189	<	catch (NullPointerException success) {}
225	>	shouldThrow();
226	>	} catch (NullPointerException success) {}
227		}
228	<	public void testAddAll3(){
228	>
229	>	/**
230	>	* addAll of a collection with any null elements throws NPE after
231	>	* possibly adding some elements
232	>	*/
233	>	public void testAddAll3() {
234		try {
235		PriorityQueue q = new PriorityQueue(SIZE);
236		Integer[] ints = new Integer[SIZE];
237		for (int i = 0; i < SIZE-1; ++i)
238		ints[i] = new Integer(i);
239		q.addAll(Arrays.asList(ints));
240	<	fail("Cannot add null elements");
241	<	}
200	<	catch (NullPointerException success) {}
240	>	shouldThrow();
241	>	} catch (NullPointerException success) {}
242		}
243
244	<	public void testAddAll5(){
245	<	try {
246	<	Integer[] empty = new Integer[0];
247	<	Integer[] ints = new Integer[SIZE];
248	<	for (int i = 0; i < SIZE; ++i)
249	<	ints[i] = new Integer(SIZE-1-i);
250	<	PriorityQueue q = new PriorityQueue(SIZE);
251	<	assertFalse(q.addAll(Arrays.asList(empty)));
252	<	assertTrue(q.addAll(Arrays.asList(ints)));
253	<	for (int i = 0; i < SIZE; ++i)
254	<	assertEquals(new Integer(i), q.poll());
255	<	}
256	<	finally {}
244	>	/**
245	>	* Queue contains all elements of successful addAll
246	>	*/
247	>	public void testAddAll5() {
248	>	Integer[] empty = new Integer[0];
249	>	Integer[] ints = new Integer[SIZE];
250	>	for (int i = 0; i < SIZE; ++i)
251	>	ints[i] = new Integer(SIZE-1-i);
252	>	PriorityQueue q = new PriorityQueue(SIZE);
253	>	assertFalse(q.addAll(Arrays.asList(empty)));
254	>	assertTrue(q.addAll(Arrays.asList(ints)));
255	>	for (int i = 0; i < SIZE; ++i)
256	>	assertEquals(new Integer(i), q.poll());
257		}
258
259	<	public void testPoll(){
259	>	/**
260	>	* poll succeeds unless empty
261	>	*/
262	>	public void testPoll() {
263		PriorityQueue q = populatedQueue(SIZE);
264		for (int i = 0; i < SIZE; ++i) {
265	<	assertEquals(i, ((Integer)q.poll()).intValue());
265	>	assertEquals(i, q.poll());
266		}
267	<	assertNull(q.poll());
267	>	assertNull(q.poll());
268		}
269
270	<	public void testPeek(){
270	>	/**
271	>	* peek returns next element, or null if empty
272	>	*/
273	>	public void testPeek() {
274		PriorityQueue q = populatedQueue(SIZE);
275		for (int i = 0; i < SIZE; ++i) {
276	<	assertEquals(i, ((Integer)q.peek()).intValue());
277	<	q.poll();
276	>	assertEquals(i, q.peek());
277	>	assertEquals(i, q.poll());
278		assertTrue(q.peek() == null ||
279	<	i != ((Integer)q.peek()).intValue());
279	>	!q.peek().equals(i));
280		}
281	<	assertNull(q.peek());
281	>	assertNull(q.peek());
282		}
283
284	<	public void testElement(){
284	>	/**
285	>	* element returns next element, or throws NSEE if empty
286	>	*/
287	>	public void testElement() {
288		PriorityQueue q = populatedQueue(SIZE);
289		for (int i = 0; i < SIZE; ++i) {
290	<	assertEquals(i, ((Integer)q.element()).intValue());
291	<	q.poll();
290	>	assertEquals(i, q.element());
291	>	assertEquals(i, q.poll());
292		}
293		try {
294		q.element();
295	<	fail("no such element");
296	<	}
247	<	catch (NoSuchElementException success) {}
295	>	shouldThrow();
296	>	} catch (NoSuchElementException success) {}
297		}
298
299	<	public void testRemove(){
299	>	/**
300	>	* remove removes next element, or throws NSEE if empty
301	>	*/
302	>	public void testRemove() {
303		PriorityQueue q = populatedQueue(SIZE);
304		for (int i = 0; i < SIZE; ++i) {
305	<	assertEquals(i, ((Integer)q.remove()).intValue());
305	>	assertEquals(i, q.remove());
306		}
307		try {
308		q.remove();
309	<	fail("remove should throw");
310	<	} catch (NoSuchElementException success){
259	<	}
309	>	shouldThrow();
310	>	} catch (NoSuchElementException success) {}
311		}
312
313	<	public void testRemoveElement(){
313	>	/**
314	>	* remove(x) removes x and returns true if present
315	>	*/
316	>	public void testRemoveElement() {
317		PriorityQueue q = populatedQueue(SIZE);
318		for (int i = 1; i < SIZE; i+=2) {
319	<	assertTrue(q.remove(new Integer(i)));
319	>	assertTrue(q.contains(i));
320	>	assertTrue(q.remove(i));
321	>	assertFalse(q.contains(i));
322	>	assertTrue(q.contains(i-1));
323		}
324		for (int i = 0; i < SIZE; i+=2) {
325	<	assertTrue(q.remove(new Integer(i)));
326	<	assertFalse(q.remove(new Integer(i+1)));
325	>	assertTrue(q.contains(i));
326	>	assertTrue(q.remove(i));
327	>	assertFalse(q.contains(i));
328	>	assertFalse(q.remove(i+1));
329	>	assertFalse(q.contains(i+1));
330		}
331		assertTrue(q.isEmpty());
332		}
333	<
334	<	public void testContains(){
333	>
334	>	/**
335	>	* contains(x) reports true when elements added but not yet removed
336	>	*/
337	>	public void testContains() {
338		PriorityQueue q = populatedQueue(SIZE);
339		for (int i = 0; i < SIZE; ++i) {
340		assertTrue(q.contains(new Integer(i)));
#	Line 280 | Line 343 | public class PriorityQueueTest extends J
343		}
344		}
345
346	<	public void testClear(){
346	>	/**
347	>	* clear removes all elements
348	>	*/
349	>	public void testClear() {
350		PriorityQueue q = populatedQueue(SIZE);
351		q.clear();
352		assertTrue(q.isEmpty());
#	Line 291 | Line 357 | public class PriorityQueueTest extends J
357		assertTrue(q.isEmpty());
358		}
359
360	<	public void testContainsAll(){
360	>	/**
361	>	* containsAll(c) is true when c contains a subset of elements
362	>	*/
363	>	public void testContainsAll() {
364		PriorityQueue q = populatedQueue(SIZE);
365		PriorityQueue p = new PriorityQueue(SIZE);
366		for (int i = 0; i < SIZE; ++i) {
#	Line 302 | Line 371 | public class PriorityQueueTest extends J
371		assertTrue(p.containsAll(q));
372		}
373
374	<	public void testRetainAll(){
374	>	/**
375	>	* retainAll(c) retains only those elements of c and reports true if changed
376	>	*/
377	>	public void testRetainAll() {
378		PriorityQueue q = populatedQueue(SIZE);
379		PriorityQueue p = populatedQueue(SIZE);
380		for (int i = 0; i < SIZE; ++i) {
#	Line 318 | Line 390 | public class PriorityQueueTest extends J
390		}
391		}
392
393	<	public void testRemoveAll(){
393	>	/**
394	>	* removeAll(c) removes only those elements of c and reports true if changed
395	>	*/
396	>	public void testRemoveAll() {
397		for (int i = 1; i < SIZE; ++i) {
398		PriorityQueue q = populatedQueue(SIZE);
399		PriorityQueue p = populatedQueue(i);
#	Line 331 | Line 406 | public class PriorityQueueTest extends J
406		}
407		}
408
409	<	public void testToArray(){
409	>	/**
410	>	* toArray contains all elements
411	>	*/
412	>	public void testToArray() {
413		PriorityQueue q = populatedQueue(SIZE);
414	<	Object[] o = q.toArray();
414	>	Object[] o = q.toArray();
415		Arrays.sort(o);
416	<	for(int i = 0; i < o.length; i++)
417	<	assertEquals(o[i], q.poll());
416	>	for (int i = 0; i < o.length; i++)
417	>	assertSame(o[i], q.poll());
418		}
419
420	<	public void testToArray2(){
421	<	PriorityQueue q = populatedQueue(SIZE);
422	<	Integer[] ints = new Integer[SIZE];
423	<	ints = (Integer[])q.toArray(ints);
420	>	/**
421	>	* toArray(a) contains all elements
422	>	*/
423	>	public void testToArray2() {
424	>	PriorityQueue<Integer> q = populatedQueue(SIZE);
425	>	Integer[] ints = new Integer[SIZE];
426	>	Integer[] array = q.toArray(ints);
427	>	assertSame(ints, array);
428		Arrays.sort(ints);
429	<	for(int i = 0; i < ints.length; i++)
430	<	assertEquals(ints[i], q.poll());
429	>	for (int i = 0; i < ints.length; i++)
430	>	assertSame(ints[i], q.poll());
431		}
432	<
433	<	public void testIterator(){
432	>
433	>	/**
434	>	* iterator iterates through all elements
435	>	*/
436	>	public void testIterator() {
437		PriorityQueue q = populatedQueue(SIZE);
438		int i = 0;
439	<	Iterator it = q.iterator();
440	<	while(it.hasNext()) {
439	>	Iterator it = q.iterator();
440	>	while (it.hasNext()) {
441		assertTrue(q.contains(it.next()));
442		++i;
443		}
444		assertEquals(i, SIZE);
445		}
446
447	<	public void testIteratorRemove () {
448	<
447	>	/**
448	>	* iterator.remove removes current element
449	>	*/
450	>	public void testIteratorRemove() {
451		final PriorityQueue q = new PriorityQueue(3);
365	–
452		q.add(new Integer(2));
453		q.add(new Integer(1));
454		q.add(new Integer(3));
#	Line 378 | Line 464 | public class PriorityQueueTest extends J
464		}
465
466
467	<	public void testToString(){
467	>	/**
468	>	* toString contains toStrings of elements
469	>	*/
470	>	public void testToString() {
471		PriorityQueue q = populatedQueue(SIZE);
472		String s = q.toString();
473		for (int i = 0; i < SIZE; ++i) {
474		assertTrue(s.indexOf(String.valueOf(i)) >= 0);
475		}
476	<	}
476	>	}
477
478	<	public void testSerialization() {
478	>	/**
479	>	* A deserialized serialized queue has same elements
480	>	*/
481	>	public void testSerialization() throws Exception {
482		PriorityQueue q = populatedQueue(SIZE);
483	<	try {
484	<	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
485	<	ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout));
486	<	out.writeObject(q);
487	<	out.close();
488	<
489	<	ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray());
490	<	ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin));
491	<	PriorityQueue r = (PriorityQueue)in.readObject();
492	<	assertEquals(q.size(), r.size());
493	<	while (!q.isEmpty())
402	<	assertEquals(q.remove(), r.remove());
403	<	} catch(Exception e){
404	<	fail("unexpected exception");
405	<	}
483	>	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
484	>	ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout));
485	>	out.writeObject(q);
486	>	out.close();
487	>
488	>	ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray());
489	>	ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin));
490	>	PriorityQueue r = (PriorityQueue)in.readObject();
491	>	assertEquals(q.size(), r.size());
492	>	while (!q.isEmpty())
493	>	assertEquals(q.remove(), r.remove());
494		}
495		}

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