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Comparing jsr166/src/test/tck/ConcurrentHashMapTest.java (file contents):
Revision 1.2 by dl, Sun Sep 7 20:39:11 2003 UTC vs.
Revision 1.48 by jsr166, Sun Jul 17 03:40:07 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.*;
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	<	public class ConcurrentHashMapTest extends TestCase{
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);
28	>	return new TestSuite(ConcurrentHashMapTest.class);
29		}
30
31	<	static final Integer one = new Integer(1);
32	<	static final Integer two = new Integer(2);
33	<	static final Integer three = new Integer(3);
34	<	static final Integer four = new Integer(4);
35	<	static final Integer five = new Integer(5);
27	<
28	<	private static ConcurrentHashMap map5() {
29	<	ConcurrentHashMap map = new ConcurrentHashMap(5);
31	>	/**
32	>	* Returns a new map from Integers 1-5 to Strings "A"-"E".
33	>	*/
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");
39	<	map.put(three, "C");
40	<	map.put(four, "D");
41	<	map.put(five, "E");
37	>	map.put(one, "A");
38	>	map.put(two, "B");
39	>	map.put(three, "C");
40	>	map.put(four, "D");
41	>	map.put(five, "E");
42		assertFalse(map.isEmpty());
43		assertEquals(5, map.size());
44	<	return map;
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	<	*  Test to verify clear correctly removes all key-element pairs from the map
114	>	* Inserted elements that are subclasses of the same Comparable
115	>	* class are found.
116		*/
117	<	public void testClear(){
118	<	ConcurrentHashMap map = map5();
119	<	map.clear();
120	<	assertEquals(map.size(), 0);
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	<	*  Test to verify contains gives the appropriate value
131	>	* Elements of classes with erased generic type parameters based
132	>	* on Comparable can be inserted and found.
133		*/
134	<	public void testContains(){
135	<	ConcurrentHashMap map = map5();
136	<	assertTrue(map.contains("A"));
137	<	assertFalse(map.contains("Z"));
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	<
153	>
154		/**
155	<	*  Test to verify containsKey gives the appropriate value
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 testContainsKey(){
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	<	assertTrue(map.containsKey(one));
214	<	assertFalse(map.containsKey(new Integer(100)));
213	>	map.clear();
214	>	assertEquals(0, map.size());
215	>	}
216	>
217	>	/**
218	>	* Maps with same contents are equal
219	>	*/
220	>	public void testEquals() {
221	>	ConcurrentHashMap map1 = map5();
222	>	ConcurrentHashMap map2 = map5();
223	>	assertEquals(map1, map2);
224	>	assertEquals(map2, map1);
225	>	map1.clear();
226	>	assertFalse(map1.equals(map2));
227	>	assertFalse(map2.equals(map1));
228	>	}
229	>
230	>	/**
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	<	*  Identical to normal contains
242	>	* contains returns true for contained value
243		*/
244	<	public void testContainsValue(){
244	>	public void testContains() {
245		ConcurrentHashMap map = map5();
246	<	assertTrue(map.contains("A"));
246	>	assertTrue(map.contains("A"));
247		assertFalse(map.contains("Z"));
248		}
249
250		/**
251	<	*  tes to verify enumeration returns an enumeration containing the correct elements
251	>	* containsKey returns true for contained key
252		*/
253	<	public void testEnumeration(){
253	>	public void testContainsKey() {
254		ConcurrentHashMap map = map5();
255	<	Enumeration e = map.elements();
256	<	int count = 0;
84	<	while(e.hasMoreElements()){
85	<	count++;
86	<	e.nextElement();
87	<	}
88	<	assertEquals(5, count);
255	>	assertTrue(map.containsKey(one));
256	>	assertFalse(map.containsKey(zero));
257		}
258
259		/**
260	<	*  Test to verify get returns the correct element at the given index
260	>	* containsValue returns true for held values
261		*/
262	<	public void testGet(){
262	>	public void testContainsValue() {
263		ConcurrentHashMap map = map5();
264	<	assertEquals("A", (String)map.get(one));
264	>	assertTrue(map.containsValue("A"));
265	>	assertFalse(map.containsValue("Z"));
266	>	}
267	>
268	>	/**
269	>	* enumeration returns an enumeration containing the correct
270	>	* elements
271	>	*/
272	>	public void testEnumeration() {
273	>	ConcurrentHashMap map = map5();
274	>	Enumeration e = map.elements();
275	>	int count = 0;
276	>	while (e.hasMoreElements()) {
277	>	count++;
278	>	e.nextElement();
279	>	}
280	>	assertEquals(5, count);
281		}
282
283		/**
284	<	*  Test to verify get on a nonexistant key returns null
284	>	* get returns the correct element at the given key,
285	>	* or null if not present
286		*/
287	<	public void testGet2(){
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	<	*  Simple test to verify isEmpty returns the correct value
296	>	* isEmpty is true of empty map and false for non-empty
297		*/
298	<	public void testIsEmpty(){
298	>	public void testIsEmpty() {
299		ConcurrentHashMap empty = new ConcurrentHashMap();
300		ConcurrentHashMap map = map5();
301	<	assertTrue(empty.isEmpty());
301	>	assertTrue(empty.isEmpty());
302		assertFalse(map.isEmpty());
303		}
304
305		/**
306	<	*  Test to verify 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();
310	>	Enumeration e = map.keys();
311	>	int count = 0;
312	>	while (e.hasMoreElements()) {
313	>	count++;
314	>	e.nextElement();
315	>	}
316	>	assertEquals(5, count);
317	>	}
318	>
319	>	/**
320	>	* keySet returns a Set containing all the keys
321		*/
322	<	public void testKeys(){
322	>	public void testKeySet() {
323		ConcurrentHashMap map = map5();
324	<	Enumeration e = map.keys();
325	<	int count = 0;
326	<	while(e.hasMoreElements()){
327	<	count++;
328	<	e.nextElement();
329	<	}
330	<	assertEquals(5, count);
324	>	Set s = map.keySet();
325	>	assertEquals(5, s.size());
326	>	assertTrue(s.contains(one));
327	>	assertTrue(s.contains(two));
328	>	assertTrue(s.contains(three));
329	>	assertTrue(s.contains(four));
330	>	assertTrue(s.contains(five));
331		}
332
333		/**
334	<	*  Test to verify keySet returns a Set containing all the keys
334	>	* keySet.toArray returns contains all keys
335		*/
336	<	public void testKeySet(){
336	>	public void testKeySetToArray() {
337		ConcurrentHashMap map = map5();
338	<	Set s = map.keySet();
339	<	assertEquals(5, s.size());
340	<	assertTrue(s.contains(one));
341	<	assertTrue(s.contains(two));
342	<	assertTrue(s.contains(three));
343	<	assertTrue(s.contains(four));
142	<	assertTrue(s.contains(five));
338	>	Set s = map.keySet();
339	>	Object[] ar = s.toArray();
340	>	assertTrue(s.containsAll(Arrays.asList(ar)));
341	>	assertEquals(5, ar.length);
342	>	ar[0] = m10;
343	>	assertFalse(s.containsAll(Arrays.asList(ar)));
344		}
345
346	<	public void testValues(){
346	>	/**
347	>	* Values.toArray contains all values
348	>	*/
349	>	public void testValuesToArray() {
350		ConcurrentHashMap map = map5();
351	<	Collection s = map.values();
352	<	assertEquals(5, s.size());
353	<	assertTrue(s.contains("A"));
354	<	assertTrue(s.contains("B"));
355	<	assertTrue(s.contains("C"));
356	<	assertTrue(s.contains("D"));
357	<	assertTrue(s.contains("E"));
351	>	Collection v = map.values();
352	>	Object[] ar = v.toArray();
353	>	ArrayList s = new ArrayList(Arrays.asList(ar));
354	>	assertEquals(5, ar.length);
355	>	assertTrue(s.contains("A"));
356	>	assertTrue(s.contains("B"));
357	>	assertTrue(s.contains("C"));
358	>	assertTrue(s.contains("D"));
359	>	assertTrue(s.contains("E"));
360		}
361
362	<	public void testEntrySet(){
362	>	/**
363	>	* entrySet.toArray contains all entries
364	>	*/
365	>	public void testEntrySetToArray() {
366		ConcurrentHashMap map = map5();
367	<	Set s = map.entrySet();
368	<	assertEquals(5, s.size());
367	>	Set s = map.entrySet();
368	>	Object[] ar = s.toArray();
369	>	assertEquals(5, ar.length);
370	>	for (int i = 0; i < 5; ++i) {
371	>	assertTrue(map.containsKey(((Map.Entry)(ar[i])).getKey()));
372	>	assertTrue(map.containsValue(((Map.Entry)(ar[i])).getValue()));
373	>	}
374	>	}
375	>
376	>	/**
377	>	* values collection contains all values
378	>	*/
379	>	public void testValues() {
380	>	ConcurrentHashMap map = map5();
381	>	Collection s = map.values();
382	>	assertEquals(5, s.size());
383	>	assertTrue(s.contains("A"));
384	>	assertTrue(s.contains("B"));
385	>	assertTrue(s.contains("C"));
386	>	assertTrue(s.contains("D"));
387	>	assertTrue(s.contains("E"));
388	>	}
389	>
390	>	/**
391	>	* entrySet contains all pairs
392	>	*/
393	>	public void testEntrySet() {
394	>	ConcurrentHashMap map = map5();
395	>	Set s = map.entrySet();
396	>	assertEquals(5, s.size());
397		Iterator it = s.iterator();
398		while (it.hasNext()) {
399		Map.Entry e = (Map.Entry) it.next();
400	<	assertTrue(
400	>	assertTrue(
401		(e.getKey().equals(one) && e.getValue().equals("A")) ||
402		(e.getKey().equals(two) && e.getValue().equals("B")) ||
403		(e.getKey().equals(three) && e.getValue().equals("C")) ||
#	Line 170 | Line 407 | public class ConcurrentHashMapTest exten
407		}
408
409		/**
410	<	*  Test to verify putAll correctly 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(){
412	>	public void testPutAll() {
413		ConcurrentHashMap empty = new ConcurrentHashMap();
414		ConcurrentHashMap map = map5();
415	<	empty.putAll(map);
416	<	assertEquals(5, empty.size());
417	<	assertTrue(empty.containsKey(one));
418	<	assertTrue(empty.containsKey(two));
419	<	assertTrue(empty.containsKey(three));
420	<	assertTrue(empty.containsKey(four));
421	<	assertTrue(empty.containsKey(five));
415	>	empty.putAll(map);
416	>	assertEquals(5, empty.size());
417	>	assertTrue(empty.containsKey(one));
418	>	assertTrue(empty.containsKey(two));
419	>	assertTrue(empty.containsKey(three));
420	>	assertTrue(empty.containsKey(four));
421	>	assertTrue(empty.containsKey(five));
422		}
423
424		/**
425	<	*  Test to verify putIfAbsent works when the given key is not present
425	>	* putIfAbsent works when the given key is not present
426		*/
427	<	public void testPutIfAbsent(){
427	>	public void testPutIfAbsent() {
428		ConcurrentHashMap map = map5();
429	<	map.putIfAbsent(new Integer(6), "Z");
430	<	assertTrue(map.containsKey(new Integer(6)));
429	>	map.putIfAbsent(six, "Z");
430	>	assertTrue(map.containsKey(six));
431		}
432
433		/**
434	<	*  Test to verify 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(){
436	>	public void testPutIfAbsent2() {
437		ConcurrentHashMap map = map5();
438		assertEquals("A", map.putIfAbsent(one, "Z"));
439		}
440
441		/**
442	<	*  Test to verify remove removes the correct key-value pair from the map
442	>	* replace fails when the given key is not present
443		*/
444	<	public void testRemove(){
444	>	public void testReplace() {
445		ConcurrentHashMap map = map5();
446	<	map.remove(five);
447	<	assertEquals(4, map.size());
211	<	assertFalse(map.containsKey(five));
446	>	assertNull(map.replace(six, "Z"));
447	>	assertFalse(map.containsKey(six));
448		}
449
450	<	public void testRemove2(){
450	>	/**
451	>	* replace succeeds if the key is already present
452	>	*/
453	>	public void testReplace2() {
454		ConcurrentHashMap map = map5();
455	<	map.remove(five, "E");
456	<	assertEquals(4, map.size());
457	<	assertFalse(map.containsKey(five));
219	<	map.remove(four, "A");
220	<	assertEquals(4, map.size());
221	<	assertTrue(map.containsKey(four));
455	>	assertNotNull(map.replace(one, "Z"));
456	>	assertEquals("Z", map.get(one));
457	>	}
458
459	+	/**
460	+	* replace value fails when the given key not mapped to expected value
461	+	*/
462	+	public void testReplaceValue() {
463	+	ConcurrentHashMap map = map5();
464	+	assertEquals("A", map.get(one));
465	+	assertFalse(map.replace(one, "Z", "Z"));
466	+	assertEquals("A", map.get(one));
467		}
468
469		/**
470	<	*  Simple test to verify size returns the correct values
470	>	* replace value succeeds when the given key mapped to expected value
471		*/
472	<	public void testSize(){
472	>	public void testReplaceValue2() {
473	>	ConcurrentHashMap map = map5();
474	>	assertEquals("A", map.get(one));
475	>	assertTrue(map.replace(one, "A", "Z"));
476	>	assertEquals("Z", map.get(one));
477	>	}
478	>
479	>	/**
480	>	* remove removes the correct key-value pair from the map
481	>	*/
482	>	public void testRemove() {
483	>	ConcurrentHashMap map = map5();
484	>	map.remove(five);
485	>	assertEquals(4, map.size());
486	>	assertFalse(map.containsKey(five));
487	>	}
488	>
489	>	/**
490	>	* remove(key,value) removes only if pair present
491	>	*/
492	>	public void testRemove2() {
493	>	ConcurrentHashMap map = map5();
494	>	map.remove(five, "E");
495	>	assertEquals(4, map.size());
496	>	assertFalse(map.containsKey(five));
497	>	map.remove(four, "A");
498	>	assertEquals(4, map.size());
499	>	assertTrue(map.containsKey(four));
500	>	}
501	>
502	>	/**
503	>	* size returns the correct values
504	>	*/
505	>	public void testSize() {
506		ConcurrentHashMap map = map5();
507		ConcurrentHashMap empty = new ConcurrentHashMap();
508	<	assertEquals(0, empty.size());
509	<	assertEquals(5, map.size());
508	>	assertEquals(0, empty.size());
509	>	assertEquals(5, map.size());
510		}
511
512	<	public void testToString(){
512	>	/**
513	>	* toString contains toString of elements
514	>	*/
515	>	public void testToString() {
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	<	}
521	>	}
522
523		// Exception tests
244	–
245	–	public void testConstructor1(){
246	–	try{
247	–	new ConcurrentHashMap(-1,0,1);
248	–	fail("ConcurrentHashMap(int, float, int) should throw Illegal Argument Exception");
249	–	}catch(IllegalArgumentException e){}
250	–	}
251	–
252	–	public void testConstructor2(){
253	–	try{
254	–	new ConcurrentHashMap(1,0,-1);
255	–	fail("ConcurrentHashMap(int, float, int) should throw Illegal Argument Exception");
256	–	}catch(IllegalArgumentException e){}
257	–	}
524
525	<	public void testConstructor3(){
526	<	try{
525	>	/**
526	>	* Cannot create with only negative capacity
527	>	*/
528	>	public void testConstructor1() {
529	>	try {
530		new ConcurrentHashMap(-1);
531	<	fail("ConcurrentHashMap(int) should throw Illegal Argument Exception");
532	<	}catch(IllegalArgumentException e){}
531	>	shouldThrow();
532	>	} catch (IllegalArgumentException success) {}
533	>	}
534	>
535	>	/**
536	>	* Constructor (initialCapacity, loadFactor) throws
537	>	* IllegalArgumentException if either argument is negative
538	>	*/
539	>	public void testConstructor2() {
540	>	try {
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	<	public void testGet_NullPointerException(){
552	<	try{
553	<	ConcurrentHashMap c = new ConcurrentHashMap(5);
551	>	/**
552	>	* Constructor (initialCapacity, loadFactor, concurrencyLevel)
553	>	* throws IllegalArgumentException if any argument is negative
554	>	*/
555	>	public void testConstructor3() {
556	>	try {
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 {
601		c.get(null);
602	<	fail("ConcurrentHashMap - Object get(Object) should throw Null Pointer exception");
603	<	}catch(NullPointerException e){}
602	>	shouldThrow();
603	>	} catch (NullPointerException success) {}
604		}
605
606	<	public void testContainsKey_NullPointerException(){
607	<	try{
608	<	ConcurrentHashMap c = new ConcurrentHashMap(5);
606	>	/**
607	>	* containsKey(null) throws NPE
608	>	*/
609	>	public void testContainsKey_NullPointerException() {
610	>	ConcurrentHashMap c = new ConcurrentHashMap(5);
611	>	try {
612		c.containsKey(null);
613	<	fail("ConcurrenthashMap - boolean containsKey(Object) should throw Null Pointer exception");
614	<	}catch(NullPointerException e){}
613	>	shouldThrow();
614	>	} catch (NullPointerException success) {}
615		}
616
617	<	public void testContainsValue_NullPointerException(){
618	<	try{
619	<	ConcurrentHashMap c = new ConcurrentHashMap(5);
617	>	/**
618	>	* containsValue(null) throws NPE
619	>	*/
620	>	public void testContainsValue_NullPointerException() {
621	>	ConcurrentHashMap c = new ConcurrentHashMap(5);
622	>	try {
623		c.containsValue(null);
624	<	fail("ConcurrentHashMap - boolean containsValue(Object) should throw Null Pointer exception");
625	<	}catch(NullPointerException e){}
624	>	shouldThrow();
625	>	} catch (NullPointerException success) {}
626		}
627
628	<	public void testContains_NullPointerException(){
629	<	try{
630	<	ConcurrentHashMap c = new ConcurrentHashMap(5);
628	>	/**
629	>	* contains(null) throws NPE
630	>	*/
631	>	public void testContains_NullPointerException() {
632	>	ConcurrentHashMap c = new ConcurrentHashMap(5);
633	>	try {
634		c.contains(null);
635	<	fail("ConcurrentHashMap - boolean contains(Object) should throw Null Pointer exception");
636	<	}catch(NullPointerException e){}
635	>	shouldThrow();
636	>	} catch (NullPointerException success) {}
637		}
638
639	<	public void testPut1_NullPointerException(){
640	<	try{
641	<	ConcurrentHashMap c = new ConcurrentHashMap(5);
639	>	/**
640	>	* put(null,x) throws NPE
641	>	*/
642	>	public void testPut1_NullPointerException() {
643	>	ConcurrentHashMap c = new ConcurrentHashMap(5);
644	>	try {
645		c.put(null, "whatever");
646	<	fail("ConcurrentHashMap - Object put(Object, Object) should throw Null Pointer exception");
647	<	}catch(NullPointerException e){}
646	>	shouldThrow();
647	>	} catch (NullPointerException success) {}
648		}
649
650	<	public void testPut2_NullPointerException(){
651	<	try{
652	<	ConcurrentHashMap c = new ConcurrentHashMap(5);
650	>	/**
651	>	* put(x, null) throws NPE
652	>	*/
653	>	public void testPut2_NullPointerException() {
654	>	ConcurrentHashMap c = new ConcurrentHashMap(5);
655	>	try {
656		c.put("whatever", null);
657	<	fail("ConcurrentHashMap - Object put(Object, Object) should throw Null Pointer exception");
658	<	}catch(NullPointerException e){}
657	>	shouldThrow();
658	>	} catch (NullPointerException success) {}
659		}
660
661	<	public void testPutIfAbsent1_NullPointerException(){
662	<	try{
663	<	ConcurrentHashMap c = new ConcurrentHashMap(5);
661	>	/**
662	>	* putIfAbsent(null, x) throws NPE
663	>	*/
664	>	public void testPutIfAbsent1_NullPointerException() {
665	>	ConcurrentHashMap c = new ConcurrentHashMap(5);
666	>	try {
667		c.putIfAbsent(null, "whatever");
668	<	fail("ConcurrentHashMap - Object putIfAbsent(Object, Object) should throw Null Pointer exception");
669	<	}catch(NullPointerException e){}
668	>	shouldThrow();
669	>	} catch (NullPointerException success) {}
670	>	}
671	>
672	>	/**
673	>	* replace(null, x) throws NPE
674	>	*/
675	>	public void testReplace_NullPointerException() {
676	>	ConcurrentHashMap c = new ConcurrentHashMap(5);
677	>	try {
678	>	c.replace(null, "whatever");
679	>	shouldThrow();
680	>	} catch (NullPointerException success) {}
681		}
682
683	<	public void testPutIfAbsent2_NullPointerException(){
684	<	try{
685	<	ConcurrentHashMap c = new ConcurrentHashMap(5);
683	>	/**
684	>	* replace(null, x, y) throws NPE
685	>	*/
686	>	public void testReplaceValue_NullPointerException() {
687	>	ConcurrentHashMap c = new ConcurrentHashMap(5);
688	>	try {
689	>	c.replace(null, one, "whatever");
690	>	shouldThrow();
691	>	} catch (NullPointerException success) {}
692	>	}
693	>
694	>	/**
695	>	* putIfAbsent(x, null) throws NPE
696	>	*/
697	>	public void testPutIfAbsent2_NullPointerException() {
698	>	ConcurrentHashMap c = new ConcurrentHashMap(5);
699	>	try {
700		c.putIfAbsent("whatever", null);
701	<	fail("COncurrentHashMap - Object putIfAbsent(Object, Object) should throw Null Pointer exception");
702	<	}catch(NullPointerException e){}
701	>	shouldThrow();
702	>	} catch (NullPointerException success) {}
703	>	}
704	>
705	>	/**
706	>	* replace(x, null) throws NPE
707	>	*/
708	>	public void testReplace2_NullPointerException() {
709	>	ConcurrentHashMap c = new ConcurrentHashMap(5);
710	>	try {
711	>	c.replace("whatever", null);
712	>	shouldThrow();
713	>	} catch (NullPointerException success) {}
714	>	}
715	>
716	>	/**
717	>	* replace(x, null, y) throws NPE
718	>	*/
719	>	public void testReplaceValue2_NullPointerException() {
720	>	ConcurrentHashMap c = new ConcurrentHashMap(5);
721	>	try {
722	>	c.replace("whatever", null, "A");
723	>	shouldThrow();
724	>	} catch (NullPointerException success) {}
725		}
726
727	+	/**
728	+	* replace(x, y, null) throws NPE
729	+	*/
730	+	public void testReplaceValue3_NullPointerException() {
731	+	ConcurrentHashMap c = new ConcurrentHashMap(5);
732	+	try {
733	+	c.replace("whatever", one, null);
734	+	shouldThrow();
735	+	} catch (NullPointerException success) {}
736	+	}
737
738	<	public void testRemove1_NullPointerException(){
739	<	try{
740	<	ConcurrentHashMap c = new ConcurrentHashMap(5);
741	<	c.put("sadsdf", "asdads");
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 {
745		c.remove(null);
746	<	fail("ConcurrentHashMap - Object remove(Object) should throw Null pointer exceptione");
747	<	}catch(NullPointerException e){}
746	>	shouldThrow();
747	>	} catch (NullPointerException success) {}
748		}
749
750	<	public void testRemove2_NullPointerException(){
751	<	try{
752	<	ConcurrentHashMap c = new ConcurrentHashMap(5);
753	<	c.put("sadsdf", "asdads");
750	>	/**
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 {
757		c.remove(null, "whatever");
758	<	fail("ConcurrentHashMap - Object remove(Object, Object) should throw Null pointer exceptione");
759	<	}catch(NullPointerException e){}
758	>	shouldThrow();
759	>	} catch (NullPointerException success) {}
760		}
761
762	<	public void testSerialization() {
763	<	ConcurrentHashMap q = map5();
762	>	/**
763	>	* remove(x, null) returns false
764	>	*/
765	>	public void testRemove3() {
766	>	ConcurrentHashMap c = new ConcurrentHashMap(5);
767	>	c.put("sadsdf", "asdads");
768	>	assertFalse(c.remove("sadsdf", null));
769	>	}
770
771	<	try {
772	<	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
773	<	ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout));
774	<	out.writeObject(q);
775	<	out.close();
771	>	/**
772	>	* A deserialized map equals original
773	>	*/
774	>	public void testSerialization() throws Exception {
775	>	Map x = map5();
776	>	Map y = serialClone(x);
777
778	<	ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray());
779	<	ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin));
780	<	ConcurrentHashMap r = (ConcurrentHashMap)in.readObject();
781	<	assertEquals(q.size(), r.size());
782	<	assertTrue(q.equals(r));
783	<	assertTrue(r.equals(q));
784	<	} catch(Exception e){
785	<	e.printStackTrace();
786	<	fail("unexpected exception");
778	>	assertNotSame(x, y);
779	>	assertEquals(x.size(), y.size());
780	>	assertEquals(x, y);
781	>	assertEquals(y, x);
782	>	}
783	>
784	>	/**
785	>	* SetValue of an EntrySet entry sets value in the map.
786	>	*/
787	>	public void testSetValueWriteThrough() {
788	>	// Adapted from a bug report by Eric Zoerner
789	>	ConcurrentHashMap map = new ConcurrentHashMap(2, 5.0f, 1);
790	>	assertTrue(map.isEmpty());
791	>	for (int i = 0; i < 20; i++)
792	>	map.put(new Integer(i), new Integer(i));
793	>	assertFalse(map.isEmpty());
794	>	Map.Entry entry1 = (Map.Entry)map.entrySet().iterator().next();
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	<
806	>	/**
807	>	* Tests performance of removeAll when the other collection is much smaller.
808	>	* ant -Djsr166.tckTestClass=ConcurrentHashMapTest -Djsr166.methodFilter=testRemoveAll_performance -Djsr166.expensiveTests=true tck
809	>	*/
810	>	public void testRemoveAll_performance() {
811	>	int mapSize = expensiveTests ? 1_000_000 : 100;
812	>	int iterations = expensiveTests ? 500 : 2;
813	>	ConcurrentHashMap<Integer, Integer> map = new ConcurrentHashMap<>();
814	>	for (int i = 0; i < mapSize; i++)
815	>	map.put(i, i);
816	>	Set<Integer> keySet = map.keySet();
817	>	Collection<Integer> removeMe = Arrays.asList(new Integer[] { -99, -86 });
818	>	for (int i = 0; i < iterations; i++)
819	>	assertFalse(keySet.removeAll(removeMe));
820	>	assertEquals(mapSize, map.size());
821	>	}
822		}

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