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

Comparing jsr166/src/test/tck/PriorityQueueTest.java (file contents):
Revision 1.13 by jsr166, Sat Nov 21 10:25:05 2009 UTC vs.
Revision 1.40 by jsr166, Wed Jan 4 06:09:58 2017 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.*;
12	<	import java.io.*;
9	>	import java.util.Arrays;
10	>	import java.util.Collection;
11	>	import java.util.Comparator;
12	>	import java.util.Iterator;
13	>	import java.util.NoSuchElementException;
14	>	import java.util.PriorityQueue;
15	>	import java.util.Queue;
16	>
17	>	import junit.framework.Test;
18	>	import junit.framework.TestSuite;
19
20		public class PriorityQueueTest extends JSR166TestCase {
21		public static void main(String[] args) {
22	<	junit.textui.TestRunner.run (suite());
22	>	main(suite(), args);
23		}
24		public static Test suite() {
25	<	return new TestSuite(PriorityQueueTest.class);
25	>	class Implementation implements CollectionImplementation {
26	>	public Class<?> klazz() { return PriorityQueue.class; }
27	>	public Collection emptyCollection() { return new PriorityQueue(); }
28	>	public Object makeElement(int i) { return i; }
29	>	public boolean isConcurrent() { return false; }
30	>	public boolean permitsNulls() { return false; }
31	>	}
32	>	return newTestSuite(PriorityQueueTest.class,
33	>	CollectionTest.testSuite(new Implementation()));
34		}
35
36		static class MyReverseComparator implements Comparator {
37		public int compare(Object x, Object y) {
38	<	int i = ((Integer)x).intValue();
25	<	int j = ((Integer)y).intValue();
26	<	if (i < j) return 1;
27	<	if (i > j) return -1;
28	<	return 0;
38	>	return ((Comparable)y).compareTo(x);
39		}
40		}
41
42		/**
43	<	* Create a queue of given size containing consecutive
44	<	* Integers 0 ... n.
43	>	* Returns a new queue of given size containing consecutive
44	>	* Integers 0 ... n - 1.
45		*/
46	<	private PriorityQueue populatedQueue(int n) {
47	<	PriorityQueue q = new PriorityQueue(n);
46	>	private PriorityQueue<Integer> populatedQueue(int n) {
47	>	PriorityQueue<Integer> q = new PriorityQueue<>(n);
48		assertTrue(q.isEmpty());
49	<	for (int i = n-1; i >= 0; i-=2)
49	>	for (int i = n - 1; i >= 0; i -= 2)
50		assertTrue(q.offer(new Integer(i)));
51	<	for (int i = (n & 1); i < n; i+=2)
51	>	for (int i = (n & 1); i < n; i += 2)
52		assertTrue(q.offer(new Integer(i)));
53		assertFalse(q.isEmpty());
54		assertEquals(n, q.size());
55	+	assertEquals((Integer) 0, q.peek());
56		return q;
57		}
58
#	Line 57 | Line 68 | public class PriorityQueueTest extends J
68		*/
69		public void testConstructor2() {
70		try {
71	<	PriorityQueue q = new PriorityQueue(0);
71	>	new PriorityQueue(0);
72		shouldThrow();
73		} catch (IllegalArgumentException success) {}
74		}
#	Line 67 | Line 78 | public class PriorityQueueTest extends J
78		*/
79		public void testConstructor3() {
80		try {
81	<	PriorityQueue q = new PriorityQueue((Collection)null);
81	>	new PriorityQueue((Collection)null);
82		shouldThrow();
83		} catch (NullPointerException success) {}
84		}
#	Line 77 | Line 88 | public class PriorityQueueTest extends J
88		*/
89		public void testConstructor4() {
90		try {
91	<	Integer[] ints = new Integer[SIZE];
81	<	PriorityQueue q = new PriorityQueue(Arrays.asList(ints));
91	>	new PriorityQueue(Arrays.asList(new Integer[SIZE]));
92		shouldThrow();
93		} catch (NullPointerException success) {}
94		}
#	Line 87 | Line 97 | public class PriorityQueueTest extends J
97		* Initializing from Collection with some null elements throws NPE
98		*/
99		public void testConstructor5() {
100	+	Integer[] ints = new Integer[SIZE];
101	+	for (int i = 0; i < SIZE - 1; ++i)
102	+	ints[i] = new Integer(i);
103		try {
104	<	Integer[] ints = new Integer[SIZE];
92	<	for (int i = 0; i < SIZE-1; ++i)
93	<	ints[i] = new Integer(i);
94	<	PriorityQueue q = new PriorityQueue(Arrays.asList(ints));
104	>	new PriorityQueue(Arrays.asList(ints));
105		shouldThrow();
106		} catch (NullPointerException success) {}
107		}
#	Line 100 | Line 110 | public class PriorityQueueTest extends J
110		* Queue contains all elements of collection used to initialize
111		*/
112		public void testConstructor6() {
113	<	try {
114	<	Integer[] ints = new Integer[SIZE];
115	<	for (int i = 0; i < SIZE; ++i)
116	<	ints[i] = new Integer(i);
117	<	PriorityQueue q = new PriorityQueue(Arrays.asList(ints));
118	<	for (int i = 0; i < SIZE; ++i)
109	<	assertEquals(ints[i], q.poll());
110	<	}
111	<	finally {}
113	>	Integer[] ints = new Integer[SIZE];
114	>	for (int i = 0; i < SIZE; ++i)
115	>	ints[i] = new Integer(i);
116	>	PriorityQueue q = new PriorityQueue(Arrays.asList(ints));
117	>	for (int i = 0; i < SIZE; ++i)
118	>	assertEquals(ints[i], q.poll());
119		}
120
121		/**
122		* The comparator used in constructor is used
123		*/
124		public void testConstructor7() {
125	<	try {
126	<	MyReverseComparator cmp = new MyReverseComparator();
127	<	PriorityQueue q = new PriorityQueue(SIZE, cmp);
128	<	assertEquals(cmp, q.comparator());
129	<	Integer[] ints = new Integer[SIZE];
130	<	for (int i = 0; i < SIZE; ++i)
131	<	ints[i] = new Integer(i);
132	<	q.addAll(Arrays.asList(ints));
133	<	for (int i = SIZE-1; i >= 0; --i)
127	<	assertEquals(ints[i], q.poll());
128	<	}
129	<	finally {}
125	>	MyReverseComparator cmp = new MyReverseComparator();
126	>	PriorityQueue q = new PriorityQueue(SIZE, cmp);
127	>	assertEquals(cmp, q.comparator());
128	>	Integer[] ints = new Integer[SIZE];
129	>	for (int i = 0; i < SIZE; ++i)
130	>	ints[i] = new Integer(i);
131	>	q.addAll(Arrays.asList(ints));
132	>	for (int i = SIZE - 1; i >= 0; --i)
133	>	assertEquals(ints[i], q.poll());
134		}
135
136		/**
#	Line 149 | Line 153 | public class PriorityQueueTest extends J
153		public void testSize() {
154		PriorityQueue q = populatedQueue(SIZE);
155		for (int i = 0; i < SIZE; ++i) {
156	<	assertEquals(SIZE-i, q.size());
156	>	assertEquals(SIZE - i, q.size());
157		q.remove();
158		}
159		for (int i = 0; i < SIZE; ++i) {
#	Line 162 | Line 166 | public class PriorityQueueTest extends J
166		* offer(null) throws NPE
167		*/
168		public void testOfferNull() {
169	+	PriorityQueue q = new PriorityQueue(1);
170		try {
166	–	PriorityQueue q = new PriorityQueue(1);
171		q.offer(null);
172		shouldThrow();
173		} catch (NullPointerException success) {}
#	Line 173 | Line 177 | public class PriorityQueueTest extends J
177		* add(null) throws NPE
178		*/
179		public void testAddNull() {
180	+	PriorityQueue q = new PriorityQueue(1);
181		try {
177	–	PriorityQueue q = new PriorityQueue(1);
182		q.add(null);
183		shouldThrow();
184		} catch (NullPointerException success) {}
#	Line 193 | Line 197 | public class PriorityQueueTest extends J
197		* Offer of non-Comparable throws CCE
198		*/
199		public void testOfferNonComparable() {
200	+	PriorityQueue q = new PriorityQueue(1);
201		try {
197	–	PriorityQueue q = new PriorityQueue(1);
198	–	q.offer(new Object());
199	–	q.offer(new Object());
202		q.offer(new Object());
203		shouldThrow();
204	<	} catch (ClassCastException success) {}
204	>	} catch (ClassCastException success) {
205	>	assertTrue(q.isEmpty());
206	>	assertEquals(0, q.size());
207	>	assertNull(q.poll());
208	>	}
209		}
210
211		/**
#	Line 217 | Line 223 | public class PriorityQueueTest extends J
223		* addAll(null) throws NPE
224		*/
225		public void testAddAll1() {
226	+	PriorityQueue q = new PriorityQueue(1);
227		try {
221	–	PriorityQueue q = new PriorityQueue(1);
228		q.addAll(null);
229		shouldThrow();
230		} catch (NullPointerException success) {}
231		}
232	+
233		/**
234		* addAll of a collection with null elements throws NPE
235		*/
236		public void testAddAll2() {
237	+	PriorityQueue q = new PriorityQueue(SIZE);
238		try {
239	<	PriorityQueue q = new PriorityQueue(SIZE);
232	<	Integer[] ints = new Integer[SIZE];
233	<	q.addAll(Arrays.asList(ints));
239	>	q.addAll(Arrays.asList(new Integer[SIZE]));
240		shouldThrow();
241		} catch (NullPointerException success) {}
242		}
243	+
244		/**
245		* addAll of a collection with any null elements throws NPE after
246		* possibly adding some elements
247		*/
248		public void testAddAll3() {
249	+	PriorityQueue q = new PriorityQueue(SIZE);
250	+	Integer[] ints = new Integer[SIZE];
251	+	for (int i = 0; i < SIZE - 1; ++i)
252	+	ints[i] = new Integer(i);
253		try {
243	–	PriorityQueue q = new PriorityQueue(SIZE);
244	–	Integer[] ints = new Integer[SIZE];
245	–	for (int i = 0; i < SIZE-1; ++i)
246	–	ints[i] = new Integer(i);
254		q.addAll(Arrays.asList(ints));
255		shouldThrow();
256		} catch (NullPointerException success) {}
#	Line 253 | Line 260 | public class PriorityQueueTest extends J
260		* Queue contains all elements of successful addAll
261		*/
262		public void testAddAll5() {
263	<	try {
264	<	Integer[] empty = new Integer[0];
265	<	Integer[] ints = new Integer[SIZE];
266	<	for (int i = 0; i < SIZE; ++i)
267	<	ints[i] = new Integer(SIZE-1-i);
268	<	PriorityQueue q = new PriorityQueue(SIZE);
269	<	assertFalse(q.addAll(Arrays.asList(empty)));
270	<	assertTrue(q.addAll(Arrays.asList(ints)));
271	<	for (int i = 0; i < SIZE; ++i)
265	<	assertEquals(new Integer(i), q.poll());
266	<	}
267	<	finally {}
263	>	Integer[] empty = new Integer[0];
264	>	Integer[] ints = new Integer[SIZE];
265	>	for (int i = 0; i < SIZE; ++i)
266	>	ints[i] = new Integer(SIZE - 1 - i);
267	>	PriorityQueue q = new PriorityQueue(SIZE);
268	>	assertFalse(q.addAll(Arrays.asList(empty)));
269	>	assertTrue(q.addAll(Arrays.asList(ints)));
270	>	for (int i = 0; i < SIZE; ++i)
271	>	assertEquals(new Integer(i), q.poll());
272		}
273
274		/**
#	Line 273 | Line 277 | public class PriorityQueueTest extends J
277		public void testPoll() {
278		PriorityQueue q = populatedQueue(SIZE);
279		for (int i = 0; i < SIZE; ++i) {
280	<	assertEquals(i, ((Integer)q.poll()).intValue());
280	>	assertEquals(i, q.poll());
281		}
282		assertNull(q.poll());
283		}
#	Line 284 | Line 288 | public class PriorityQueueTest extends J
288		public void testPeek() {
289		PriorityQueue q = populatedQueue(SIZE);
290		for (int i = 0; i < SIZE; ++i) {
291	<	assertEquals(i, ((Integer)q.peek()).intValue());
292	<	q.poll();
291	>	assertEquals(i, q.peek());
292	>	assertEquals(i, q.poll());
293		assertTrue(q.peek() == null ||
294	<	i != ((Integer)q.peek()).intValue());
294	>	!q.peek().equals(i));
295		}
296		assertNull(q.peek());
297		}
#	Line 298 | Line 302 | public class PriorityQueueTest extends J
302		public void testElement() {
303		PriorityQueue q = populatedQueue(SIZE);
304		for (int i = 0; i < SIZE; ++i) {
305	<	assertEquals(i, ((Integer)q.element()).intValue());
306	<	q.poll();
305	>	assertEquals(i, q.element());
306	>	assertEquals(i, q.poll());
307		}
308		try {
309		q.element();
#	Line 313 | Line 317 | public class PriorityQueueTest extends J
317		public void testRemove() {
318		PriorityQueue q = populatedQueue(SIZE);
319		for (int i = 0; i < SIZE; ++i) {
320	<	assertEquals(i, ((Integer)q.remove()).intValue());
320	>	assertEquals(i, q.remove());
321		}
322		try {
323		q.remove();
#	Line 326 | Line 330 | public class PriorityQueueTest extends J
330		*/
331		public void testRemoveElement() {
332		PriorityQueue q = populatedQueue(SIZE);
333	<	for (int i = 1; i < SIZE; i+=2) {
334	<	assertTrue(q.remove(new Integer(i)));
335	<	}
336	<	for (int i = 0; i < SIZE; i+=2) {
337	<	assertTrue(q.remove(new Integer(i)));
338	<	assertFalse(q.remove(new Integer(i+1)));
333	>	for (int i = 1; i < SIZE; i += 2) {
334	>	assertTrue(q.contains(i));
335	>	assertTrue(q.remove(i));
336	>	assertFalse(q.contains(i));
337	>	assertTrue(q.contains(i - 1));
338	>	}
339	>	for (int i = 0; i < SIZE; i += 2) {
340	>	assertTrue(q.contains(i));
341	>	assertTrue(q.remove(i));
342	>	assertFalse(q.contains(i));
343	>	assertFalse(q.remove(i + 1));
344	>	assertFalse(q.contains(i + 1));
345		}
346		assertTrue(q.isEmpty());
347		}
#	Line 390 | Line 400 | public class PriorityQueueTest extends J
400		assertTrue(changed);
401
402		assertTrue(q.containsAll(p));
403	<	assertEquals(SIZE-i, q.size());
403	>	assertEquals(SIZE - i, q.size());
404		p.remove();
405		}
406		}
#	Line 403 | Line 413 | public class PriorityQueueTest extends J
413		PriorityQueue q = populatedQueue(SIZE);
414		PriorityQueue p = populatedQueue(i);
415		assertTrue(q.removeAll(p));
416	<	assertEquals(SIZE-i, q.size());
416	>	assertEquals(SIZE - i, q.size());
417		for (int j = 0; j < i; ++j) {
418	<	Integer I = (Integer)(p.remove());
419	<	assertFalse(q.contains(I));
418	>	Integer x = (Integer)(p.remove());
419	>	assertFalse(q.contains(x));
420		}
421		}
422		}
#	Line 419 | Line 429 | public class PriorityQueueTest extends J
429		Object[] o = q.toArray();
430		Arrays.sort(o);
431		for (int i = 0; i < o.length; i++)
432	<	assertEquals(o[i], q.poll());
432	>	assertSame(o[i], q.poll());
433		}
434
435		/**
436		* toArray(a) contains all elements
437		*/
438		public void testToArray2() {
439	<	PriorityQueue q = populatedQueue(SIZE);
439	>	PriorityQueue<Integer> q = populatedQueue(SIZE);
440		Integer[] ints = new Integer[SIZE];
441	<	ints = (Integer[])q.toArray(ints);
441	>	Integer[] array = q.toArray(ints);
442	>	assertSame(ints, array);
443		Arrays.sort(ints);
444		for (int i = 0; i < ints.length; i++)
445	<	assertEquals(ints[i], q.poll());
445	>	assertSame(ints[i], q.poll());
446		}
447
448		/**
#	Line 439 | Line 450 | public class PriorityQueueTest extends J
450		*/
451		public void testIterator() {
452		PriorityQueue q = populatedQueue(SIZE);
442	–	int i = 0;
453		Iterator it = q.iterator();
454	<	while (it.hasNext()) {
454	>	int i;
455	>	for (i = 0; it.hasNext(); i++)
456		assertTrue(q.contains(it.next()));
446	–	++i;
447	–	}
457		assertEquals(i, SIZE);
458	+	assertIteratorExhausted(it);
459	+	}
460	+
461	+	/**
462	+	* iterator of empty collection has no elements
463	+	*/
464	+	public void testEmptyIterator() {
465	+	assertIteratorExhausted(new PriorityQueue().iterator());
466		}
467
468		/**
469		* iterator.remove removes current element
470		*/
471	<	public void testIteratorRemove () {
471	>	public void testIteratorRemove() {
472		final PriorityQueue q = new PriorityQueue(3);
473		q.add(new Integer(2));
474		q.add(new Integer(1));
#	Line 467 | Line 484 | public class PriorityQueueTest extends J
484		assertFalse(it.hasNext());
485		}
486
470	–
487		/**
488		* toString contains toStrings of elements
489		*/
#	Line 475 | Line 491 | public class PriorityQueueTest extends J
491		PriorityQueue q = populatedQueue(SIZE);
492		String s = q.toString();
493		for (int i = 0; i < SIZE; ++i) {
494	<	assertTrue(s.indexOf(String.valueOf(i)) >= 0);
494	>	assertTrue(s.contains(String.valueOf(i)));
495		}
496		}
497
#	Line 483 | Line 499 | public class PriorityQueueTest extends J
499		* A deserialized serialized queue has same elements
500		*/
501		public void testSerialization() throws Exception {
502	<	PriorityQueue q = populatedQueue(SIZE);
503	<	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
504	<	ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout));
505	<	out.writeObject(q);
506	<	out.close();
507	<
508	<	ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray());
509	<	ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin));
510	<	PriorityQueue r = (PriorityQueue)in.readObject();
511	<	assertEquals(q.size(), r.size());
496	<	while (!q.isEmpty())
497	<	assertEquals(q.remove(), r.remove());
502	>	Queue x = populatedQueue(SIZE);
503	>	Queue y = serialClone(x);
504	>
505	>	assertNotSame(x, y);
506	>	assertEquals(x.size(), y.size());
507	>	while (!x.isEmpty()) {
508	>	assertFalse(y.isEmpty());
509	>	assertEquals(x.remove(), y.remove());
510	>	}
511	>	assertTrue(y.isEmpty());
512		}
513		}

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