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Comparing jsr166/src/test/tck/ConcurrentHashMapTest.java (file contents):
Revision 1.21 by jsr166, Wed Aug 25 00:07:03 2010 UTC vs.
Revision 1.46 by jsr166, Sun May 24 01:23:17 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.ArrayList;
10	>	import java.util.Arrays;
11	>	import java.util.Collection;
12	>	import java.util.Collections;
13		import java.util.Enumeration;
14	<	import java.io.*;
14	>	import java.util.Iterator;
15	>	import java.util.Map;
16	>	import java.util.Random;
17	>	import java.util.Set;
18	>	import java.util.concurrent.ConcurrentHashMap;
19	>
20	>	import junit.framework.Test;
21	>	import junit.framework.TestSuite;
22
23		public class ConcurrentHashMapTest extends JSR166TestCase {
24		public static void main(String[] args) {
25	<	junit.textui.TestRunner.run(suite());
25	>	main(suite(), args);
26		}
27		public static Test suite() {
28		return new TestSuite(ConcurrentHashMapTest.class);
29		}
30
31		/**
32	<	* Create a map from Integers 1-5 to Strings "A"-"E".
32	>	* Returns a new map from Integers 1-5 to Strings "A"-"E".
33		*/
34	<	private static ConcurrentHashMap map5() {
35	<	ConcurrentHashMap map = new ConcurrentHashMap(5);
34	>	private static ConcurrentHashMap<Integer, String> map5() {
35	>	ConcurrentHashMap map = new ConcurrentHashMap<Integer, String>(5);
36		assertTrue(map.isEmpty());
37		map.put(one, "A");
38		map.put(two, "B");
#	Line 36 | Line 44 | public class ConcurrentHashMapTest exten
44		return map;
45		}
46
47	+	/** Re-implement Integer.compare for old java versions */
48	+	static int compare(int x, int y) {
49	+	return (x < y) ? -1 : (x > y) ? 1 : 0;
50	+	}
51	+
52	+	// classes for testing Comparable fallbacks
53	+	static class BI implements Comparable<BI> {
54	+	private final int value;
55	+	BI(int value) { this.value = value; }
56	+	public int compareTo(BI other) {
57	+	return compare(value, other.value);
58	+	}
59	+	public boolean equals(Object x) {
60	+	return (x instanceof BI) && ((BI)x).value == value;
61	+	}
62	+	public int hashCode() { return 42; }
63	+	}
64	+	static class CI extends BI { CI(int value) { super(value); } }
65	+	static class DI extends BI { DI(int value) { super(value); } }
66	+
67	+	static class BS implements Comparable<BS> {
68	+	private final String value;
69	+	BS(String value) { this.value = value; }
70	+	public int compareTo(BS other) {
71	+	return value.compareTo(other.value);
72	+	}
73	+	public boolean equals(Object x) {
74	+	return (x instanceof BS) && value.equals(((BS)x).value);
75	+	}
76	+	public int hashCode() { return 42; }
77	+	}
78	+
79	+	static class LexicographicList<E extends Comparable<E>> extends ArrayList<E>
80	+	implements Comparable<LexicographicList<E>> {
81	+	LexicographicList(Collection<E> c) { super(c); }
82	+	LexicographicList(E e) { super(Collections.singleton(e)); }
83	+	public int compareTo(LexicographicList<E> other) {
84	+	int common = Math.min(size(), other.size());
85	+	int r = 0;
86	+	for (int i = 0; i < common; i++) {
87	+	if ((r = get(i).compareTo(other.get(i))) != 0)
88	+	break;
89	+	}
90	+	if (r == 0)
91	+	r = compare(size(), other.size());
92	+	return r;
93	+	}
94	+	private static final long serialVersionUID = 0;
95	+	}
96	+
97	+	static class CollidingObject {
98	+	final String value;
99	+	CollidingObject(final String value) { this.value = value; }
100	+	public int hashCode() { return this.value.hashCode() & 1; }
101	+	public boolean equals(final Object obj) {
102	+	return (obj instanceof CollidingObject) && ((CollidingObject)obj).value.equals(value);
103	+	}
104	+	}
105	+
106	+	static class ComparableCollidingObject extends CollidingObject implements Comparable<ComparableCollidingObject> {
107	+	ComparableCollidingObject(final String value) { super(value); }
108	+	public int compareTo(final ComparableCollidingObject o) {
109	+	return value.compareTo(o.value);
110	+	}
111	+	}
112	+
113	+	/**
114	+	* Inserted elements that are subclasses of the same Comparable
115	+	* class are found.
116	+	*/
117	+	public void testComparableFamily() {
118	+	int size = 500;         // makes measured test run time -> 60ms
119	+	ConcurrentHashMap<BI, Boolean> m =
120	+	new ConcurrentHashMap<BI, Boolean>();
121	+	for (int i = 0; i < size; i++) {
122	+	assertTrue(m.put(new CI(i), true) == null);
123	+	}
124	+	for (int i = 0; i < size; i++) {
125	+	assertTrue(m.containsKey(new CI(i)));
126	+	assertTrue(m.containsKey(new DI(i)));
127	+	}
128	+	}
129	+
130		/**
131	<	*  clear removes all pairs
131	>	* Elements of classes with erased generic type parameters based
132	>	* on Comparable can be inserted and found.
133	>	*/
134	>	public void testGenericComparable() {
135	>	int size = 120;         // makes measured test run time -> 60ms
136	>	ConcurrentHashMap<Object, Boolean> m =
137	>	new ConcurrentHashMap<Object, Boolean>();
138	>	for (int i = 0; i < size; i++) {
139	>	BI bi = new BI(i);
140	>	BS bs = new BS(String.valueOf(i));
141	>	LexicographicList<BI> bis = new LexicographicList<BI>(bi);
142	>	LexicographicList<BS> bss = new LexicographicList<BS>(bs);
143	>	assertTrue(m.putIfAbsent(bis, true) == null);
144	>	assertTrue(m.containsKey(bis));
145	>	if (m.putIfAbsent(bss, true) == null)
146	>	assertTrue(m.containsKey(bss));
147	>	assertTrue(m.containsKey(bis));
148	>	}
149	>	for (int i = 0; i < size; i++) {
150	>	assertTrue(m.containsKey(Collections.singletonList(new BI(i))));
151	>	}
152	>	}
153	>
154	>	/**
155	>	* Elements of non-comparable classes equal to those of classes
156	>	* with erased generic type parameters based on Comparable can be
157	>	* inserted and found.
158	>	*/
159	>	public void testGenericComparable2() {
160	>	int size = 500;         // makes measured test run time -> 60ms
161	>	ConcurrentHashMap<Object, Boolean> m =
162	>	new ConcurrentHashMap<Object, Boolean>();
163	>	for (int i = 0; i < size; i++) {
164	>	m.put(Collections.singletonList(new BI(i)), true);
165	>	}
166	>
167	>	for (int i = 0; i < size; i++) {
168	>	LexicographicList<BI> bis = new LexicographicList<BI>(new BI(i));
169	>	assertTrue(m.containsKey(bis));
170	>	}
171	>	}
172	>
173	>	/**
174	>	* Mixtures of instances of comparable and non-comparable classes
175	>	* can be inserted and found.
176	>	*/
177	>	public void testMixedComparable() {
178	>	int size = 1200;        // makes measured test run time -> 35ms
179	>	ConcurrentHashMap<Object, Object> map =
180	>	new ConcurrentHashMap<Object, Object>();
181	>	Random rng = new Random();
182	>	for (int i = 0; i < size; i++) {
183	>	Object x;
184	>	switch (rng.nextInt(4)) {
185	>	case 0:
186	>	x = new Object();
187	>	break;
188	>	case 1:
189	>	x = new CollidingObject(Integer.toString(i));
190	>	break;
191	>	default:
192	>	x = new ComparableCollidingObject(Integer.toString(i));
193	>	}
194	>	assertNull(map.put(x, x));
195	>	}
196	>	int count = 0;
197	>	for (Object k : map.keySet()) {
198	>	assertEquals(map.get(k), k);
199	>	++count;
200	>	}
201	>	assertEquals(count, size);
202	>	assertEquals(map.size(), size);
203	>	for (Object k : map.keySet()) {
204	>	assertEquals(map.put(k, k), k);
205	>	}
206	>	}
207	>
208	>	/**
209	>	* clear removes all pairs
210		*/
211		public void testClear() {
212		ConcurrentHashMap map = map5();
213		map.clear();
214	<	assertEquals(map.size(), 0);
214	>	assertEquals(0, map.size());
215		}
216
217		/**
218	<	*  Maps with same contents are equal
218	>	* Maps with same contents are equal
219		*/
220		public void testEquals() {
221		ConcurrentHashMap map1 = map5();
#	Line 59 | Line 228 | public class ConcurrentHashMapTest exten
228		}
229
230		/**
231	<	*  contains returns true for contained value
231	>	* hashCode() equals sum of each key.hashCode ^ value.hashCode
232	>	*/
233	>	public void testHashCode() {
234	>	ConcurrentHashMap<Integer,String> map = map5();
235	>	int sum = 0;
236	>	for (Map.Entry<Integer,String> e : map.entrySet())
237	>	sum += e.getKey().hashCode() ^ e.getValue().hashCode();
238	>	assertEquals(sum, map.hashCode());
239	>	}
240	>
241	>	/**
242	>	* contains returns true for contained value
243		*/
244		public void testContains() {
245		ConcurrentHashMap map = map5();
#	Line 68 | Line 248 | public class ConcurrentHashMapTest exten
248		}
249
250		/**
251	<	*  containsKey returns true for contained key
251	>	* containsKey returns true for contained key
252		*/
253		public void testContainsKey() {
254		ConcurrentHashMap map = map5();
#	Line 77 | Line 257 | public class ConcurrentHashMapTest exten
257		}
258
259		/**
260	<	*  containsValue returns true for held values
260	>	* containsValue returns true for held values
261		*/
262		public void testContainsValue() {
263		ConcurrentHashMap map = map5();
#	Line 86 | Line 266 | public class ConcurrentHashMapTest exten
266		}
267
268		/**
269	<	*   enumeration returns an enumeration containing the correct
270	<	*   elements
269	>	* enumeration returns an enumeration containing the correct
270	>	* elements
271		*/
272		public void testEnumeration() {
273		ConcurrentHashMap map = map5();
#	Line 101 | Line 281 | public class ConcurrentHashMapTest exten
281		}
282
283		/**
284	<	*  get returns the correct element at the given key,
285	<	*  or null if not present
284	>	* get returns the correct element at the given key,
285	>	* or null if not present
286		*/
287		public void testGet() {
288		ConcurrentHashMap map = map5();
289		assertEquals("A", (String)map.get(one));
290		ConcurrentHashMap empty = new ConcurrentHashMap();
291		assertNull(map.get("anything"));
292	+	assertNull(empty.get("anything"));
293		}
294
295		/**
296	<	*  isEmpty is true of empty map and false for non-empty
296	>	* isEmpty is true of empty map and false for non-empty
297		*/
298		public void testIsEmpty() {
299		ConcurrentHashMap empty = new ConcurrentHashMap();
#	Line 122 | Line 303 | public class ConcurrentHashMapTest exten
303		}
304
305		/**
306	<	*   keys returns an enumeration containing all the keys from the map
306	>	* keys returns an enumeration containing all the keys from the map
307		*/
308		public void testKeys() {
309		ConcurrentHashMap map = map5();
#	Line 136 | Line 317 | public class ConcurrentHashMapTest exten
317		}
318
319		/**
320	<	*   keySet returns a Set containing all the keys
320	>	* keySet returns a Set containing all the keys
321		*/
322		public void testKeySet() {
323		ConcurrentHashMap map = map5();
#	Line 150 | Line 331 | public class ConcurrentHashMapTest exten
331		}
332
333		/**
334	<	*  keySet.toArray returns contains all keys
334	>	* keySet.toArray returns contains all keys
335		*/
336		public void testKeySetToArray() {
337		ConcurrentHashMap map = map5();
#	Line 163 | Line 344 | public class ConcurrentHashMapTest exten
344		}
345
346		/**
347	<	*  Values.toArray contains all values
347	>	* Values.toArray contains all values
348		*/
349		public void testValuesToArray() {
350		ConcurrentHashMap map = map5();
#	Line 179 | Line 360 | public class ConcurrentHashMapTest exten
360		}
361
362		/**
363	<	*  entrySet.toArray contains all entries
363	>	* entrySet.toArray contains all entries
364		*/
365		public void testEntrySetToArray() {
366		ConcurrentHashMap map = map5();
#	Line 226 | Line 407 | public class ConcurrentHashMapTest exten
407		}
408
409		/**
410	<	*   putAll  adds all key-value pairs from the given map
410	>	* putAll adds all key-value pairs from the given map
411		*/
412		public void testPutAll() {
413		ConcurrentHashMap empty = new ConcurrentHashMap();
#	Line 241 | Line 422 | public class ConcurrentHashMapTest exten
422		}
423
424		/**
425	<	*   putIfAbsent works when the given key is not present
425	>	* putIfAbsent works when the given key is not present
426		*/
427		public void testPutIfAbsent() {
428		ConcurrentHashMap map = map5();
#	Line 250 | Line 431 | public class ConcurrentHashMapTest exten
431		}
432
433		/**
434	<	*   putIfAbsent does not add the pair if the key is already present
434	>	* putIfAbsent does not add the pair if the key is already present
435		*/
436		public void testPutIfAbsent2() {
437		ConcurrentHashMap map = map5();
#	Line 258 | Line 439 | public class ConcurrentHashMapTest exten
439		}
440
441		/**
442	<	*   replace fails when the given key is not present
442	>	* replace fails when the given key is not present
443		*/
444		public void testReplace() {
445		ConcurrentHashMap map = map5();
#	Line 267 | Line 448 | public class ConcurrentHashMapTest exten
448		}
449
450		/**
451	<	*   replace succeeds if the key is already present
451	>	* replace succeeds if the key is already present
452		*/
453		public void testReplace2() {
454		ConcurrentHashMap map = map5();
#	Line 275 | Line 456 | public class ConcurrentHashMapTest exten
456		assertEquals("Z", map.get(one));
457		}
458
278	–
459		/**
460		* replace value fails when the given key not mapped to expected value
461		*/
#	Line 296 | Line 476 | public class ConcurrentHashMapTest exten
476		assertEquals("Z", map.get(one));
477		}
478
299	–
479		/**
480	<	*   remove removes the correct key-value pair from the map
480	>	* remove removes the correct key-value pair from the map
481		*/
482		public void testRemove() {
483		ConcurrentHashMap map = map5();
#	Line 321 | Line 500 | public class ConcurrentHashMapTest exten
500		}
501
502		/**
503	<	*   size returns the correct values
503	>	* size returns the correct values
504		*/
505		public void testSize() {
506		ConcurrentHashMap map = map5();
#	Line 337 | Line 516 | public class ConcurrentHashMapTest exten
516		ConcurrentHashMap map = map5();
517		String s = map.toString();
518		for (int i = 1; i <= 5; ++i) {
519	<	assertTrue(s.indexOf(String.valueOf(i)) >= 0);
519	>	assertTrue(s.contains(String.valueOf(i)));
520		}
521		}
522
523		// Exception tests
524
525		/**
526	<	* Cannot create with negative capacity
526	>	* Cannot create with only negative capacity
527		*/
528		public void testConstructor1() {
529		try {
530	<	new ConcurrentHashMap(-1,0,1);
530	>	new ConcurrentHashMap(-1);
531		shouldThrow();
532		} catch (IllegalArgumentException success) {}
533		}
534
535		/**
536	<	* Cannot create with negative concurrency level
537	<	*/
536	>	* Constructor (initialCapacity, loadFactor) throws
537	>	* IllegalArgumentException if either argument is negative
538	>	*/
539		public void testConstructor2() {
540		try {
541	<	new ConcurrentHashMap(1,0,-1);
541	>	new ConcurrentHashMap(-1, .75f);
542	>	shouldThrow();
543	>	} catch (IllegalArgumentException success) {}
544	>
545	>	try {
546	>	new ConcurrentHashMap(16, -1);
547		shouldThrow();
548		} catch (IllegalArgumentException success) {}
549		}
550
551		/**
552	<	* Cannot create with only negative capacity
552	>	* Constructor (initialCapacity, loadFactor, concurrencyLevel)
553	>	* throws IllegalArgumentException if any argument is negative
554		*/
555		public void testConstructor3() {
556		try {
557	<	new ConcurrentHashMap(-1);
557	>	new ConcurrentHashMap(-1, .75f, 1);
558	>	shouldThrow();
559	>	} catch (IllegalArgumentException success) {}
560	>
561	>	try {
562	>	new ConcurrentHashMap(16, -1, 1);
563		shouldThrow();
564		} catch (IllegalArgumentException success) {}
565	+
566	+	try {
567	+	new ConcurrentHashMap(16, .75f, -1);
568	+	shouldThrow();
569	+	} catch (IllegalArgumentException success) {}
570	+	}
571	+
572	+	/**
573	+	* ConcurrentHashMap(map) throws NullPointerException if the given
574	+	* map is null
575	+	*/
576	+	public void testConstructor4() {
577	+	try {
578	+	new ConcurrentHashMap(null);
579	+	shouldThrow();
580	+	} catch (NullPointerException success) {}
581	+	}
582	+
583	+	/**
584	+	* ConcurrentHashMap(map) creates a new map with the same mappings
585	+	* as the given map
586	+	*/
587	+	public void testConstructor5() {
588	+	ConcurrentHashMap map1 = map5();
589	+	ConcurrentHashMap map2 = new ConcurrentHashMap(map5());
590	+	assertTrue(map2.equals(map1));
591	+	map2.put(one, "F");
592	+	assertFalse(map2.equals(map1));
593		}
594
595		/**
596		* get(null) throws NPE
597		*/
598		public void testGet_NullPointerException() {
599	+	ConcurrentHashMap c = new ConcurrentHashMap(5);
600		try {
381	–	ConcurrentHashMap c = new ConcurrentHashMap(5);
601		c.get(null);
602		shouldThrow();
603		} catch (NullPointerException success) {}
#	Line 388 | Line 607 | public class ConcurrentHashMapTest exten
607		* containsKey(null) throws NPE
608		*/
609		public void testContainsKey_NullPointerException() {
610	+	ConcurrentHashMap c = new ConcurrentHashMap(5);
611		try {
392	–	ConcurrentHashMap c = new ConcurrentHashMap(5);
612		c.containsKey(null);
613		shouldThrow();
614		} catch (NullPointerException success) {}
#	Line 399 | Line 618 | public class ConcurrentHashMapTest exten
618		* containsValue(null) throws NPE
619		*/
620		public void testContainsValue_NullPointerException() {
621	+	ConcurrentHashMap c = new ConcurrentHashMap(5);
622		try {
403	–	ConcurrentHashMap c = new ConcurrentHashMap(5);
623		c.containsValue(null);
624		shouldThrow();
625		} catch (NullPointerException success) {}
#	Line 410 | Line 629 | public class ConcurrentHashMapTest exten
629		* contains(null) throws NPE
630		*/
631		public void testContains_NullPointerException() {
632	+	ConcurrentHashMap c = new ConcurrentHashMap(5);
633		try {
414	–	ConcurrentHashMap c = new ConcurrentHashMap(5);
634		c.contains(null);
635		shouldThrow();
636		} catch (NullPointerException success) {}
#	Line 421 | Line 640 | public class ConcurrentHashMapTest exten
640		* put(null,x) throws NPE
641		*/
642		public void testPut1_NullPointerException() {
643	+	ConcurrentHashMap c = new ConcurrentHashMap(5);
644		try {
425	–	ConcurrentHashMap c = new ConcurrentHashMap(5);
645		c.put(null, "whatever");
646		shouldThrow();
647		} catch (NullPointerException success) {}
#	Line 432 | Line 651 | public class ConcurrentHashMapTest exten
651		* put(x, null) throws NPE
652		*/
653		public void testPut2_NullPointerException() {
654	+	ConcurrentHashMap c = new ConcurrentHashMap(5);
655		try {
436	–	ConcurrentHashMap c = new ConcurrentHashMap(5);
656		c.put("whatever", null);
657		shouldThrow();
658		} catch (NullPointerException success) {}
#	Line 443 | Line 662 | public class ConcurrentHashMapTest exten
662		* putIfAbsent(null, x) throws NPE
663		*/
664		public void testPutIfAbsent1_NullPointerException() {
665	+	ConcurrentHashMap c = new ConcurrentHashMap(5);
666		try {
447	–	ConcurrentHashMap c = new ConcurrentHashMap(5);
667		c.putIfAbsent(null, "whatever");
668		shouldThrow();
669		} catch (NullPointerException success) {}
#	Line 454 | Line 673 | public class ConcurrentHashMapTest exten
673		* replace(null, x) throws NPE
674		*/
675		public void testReplace_NullPointerException() {
676	+	ConcurrentHashMap c = new ConcurrentHashMap(5);
677		try {
458	–	ConcurrentHashMap c = new ConcurrentHashMap(5);
678		c.replace(null, "whatever");
679		shouldThrow();
680		} catch (NullPointerException success) {}
#	Line 465 | Line 684 | public class ConcurrentHashMapTest exten
684		* replace(null, x, y) throws NPE
685		*/
686		public void testReplaceValue_NullPointerException() {
687	+	ConcurrentHashMap c = new ConcurrentHashMap(5);
688		try {
469	–	ConcurrentHashMap c = new ConcurrentHashMap(5);
689		c.replace(null, one, "whatever");
690		shouldThrow();
691		} catch (NullPointerException success) {}
#	Line 476 | Line 695 | public class ConcurrentHashMapTest exten
695		* putIfAbsent(x, null) throws NPE
696		*/
697		public void testPutIfAbsent2_NullPointerException() {
698	+	ConcurrentHashMap c = new ConcurrentHashMap(5);
699		try {
480	–	ConcurrentHashMap c = new ConcurrentHashMap(5);
700		c.putIfAbsent("whatever", null);
701		shouldThrow();
702		} catch (NullPointerException success) {}
703		}
704
486	–
705		/**
706		* replace(x, null) throws NPE
707		*/
708		public void testReplace2_NullPointerException() {
709	+	ConcurrentHashMap c = new ConcurrentHashMap(5);
710		try {
492	–	ConcurrentHashMap c = new ConcurrentHashMap(5);
711		c.replace("whatever", null);
712		shouldThrow();
713		} catch (NullPointerException success) {}
#	Line 499 | Line 717 | public class ConcurrentHashMapTest exten
717		* replace(x, null, y) throws NPE
718		*/
719		public void testReplaceValue2_NullPointerException() {
720	+	ConcurrentHashMap c = new ConcurrentHashMap(5);
721		try {
503	–	ConcurrentHashMap c = new ConcurrentHashMap(5);
722		c.replace("whatever", null, "A");
723		shouldThrow();
724		} catch (NullPointerException success) {}
#	Line 510 | Line 728 | public class ConcurrentHashMapTest exten
728		* replace(x, y, null) throws NPE
729		*/
730		public void testReplaceValue3_NullPointerException() {
731	+	ConcurrentHashMap c = new ConcurrentHashMap(5);
732		try {
514	–	ConcurrentHashMap c = new ConcurrentHashMap(5);
733		c.replace("whatever", one, null);
734		shouldThrow();
735		} catch (NullPointerException success) {}
736		}
737
520	–
738		/**
739		* remove(null) throws NPE
740		*/
741		public void testRemove1_NullPointerException() {
742	+	ConcurrentHashMap c = new ConcurrentHashMap(5);
743	+	c.put("sadsdf", "asdads");
744		try {
526	–	ConcurrentHashMap c = new ConcurrentHashMap(5);
527	–	c.put("sadsdf", "asdads");
745		c.remove(null);
746		shouldThrow();
747		} catch (NullPointerException success) {}
#	Line 534 | Line 751 | public class ConcurrentHashMapTest exten
751		* remove(null, x) throws NPE
752		*/
753		public void testRemove2_NullPointerException() {
754	+	ConcurrentHashMap c = new ConcurrentHashMap(5);
755	+	c.put("sadsdf", "asdads");
756		try {
538	–	ConcurrentHashMap c = new ConcurrentHashMap(5);
539	–	c.put("sadsdf", "asdads");
757		c.remove(null, "whatever");
758		shouldThrow();
759		} catch (NullPointerException success) {}
#	Line 555 | Line 772 | public class ConcurrentHashMapTest exten
772		* A deserialized map equals original
773		*/
774		public void testSerialization() throws Exception {
775	<	ConcurrentHashMap q = map5();
775	>	Map x = map5();
776	>	Map y = serialClone(x);
777
778	<	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
779	<	ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout));
780	<	out.writeObject(q);
781	<	out.close();
564	<
565	<	ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray());
566	<	ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin));
567	<	ConcurrentHashMap r = (ConcurrentHashMap)in.readObject();
568	<	assertEquals(q.size(), r.size());
569	<	assertTrue(q.equals(r));
570	<	assertTrue(r.equals(q));
778	>	assertNotSame(x, y);
779	>	assertEquals(x.size(), y.size());
780	>	assertEquals(x, y);
781	>	assertEquals(y, x);
782		}
783
573	–
784		/**
785		* SetValue of an EntrySet entry sets value in the map.
786		*/
#	Line 582 | Line 792 | public class ConcurrentHashMapTest exten
792		map.put(new Integer(i), new Integer(i));
793		assertFalse(map.isEmpty());
794		Map.Entry entry1 = (Map.Entry)map.entrySet().iterator().next();
795	<
796	<	// assert that entry1 is not 16
797	<	assertTrue("entry is 16, test not valid",
798	<	!entry1.getKey().equals(new Integer(16)));
799	<
800	<	// remove 16 (a different key) from map
801	<	// which just happens to cause entry1 to be cloned in map
802	<	map.remove(new Integer(16));
803	<	entry1.setValue("XYZ");
594	<	assertTrue(map.containsValue("XYZ")); // fails
795	>	// Unless it happens to be first (in which case remainder of
796	>	// test is skipped), remove a possibly-colliding key from map
797	>	// which, under some implementations, may cause entry1 to be
798	>	// cloned in map
799	>	if (!entry1.getKey().equals(new Integer(16))) {
800	>	map.remove(new Integer(16));
801	>	entry1.setValue("XYZ");
802	>	assertTrue(map.containsValue("XYZ")); // fails if write-through broken
803	>	}
804		}
805
806		}

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