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

Comparing jsr166/src/test/tck/ConcurrentHashMapTest.java (file contents):
Revision 1.20 by jsr166, Tue Dec 1 09:48:13 2009 UTC vs.
Revision 1.31 by jsr166, Thu May 30 03:28:55 2013 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.util.Enumeration;
13	<	import java.io.*;
11	>	import java.util.concurrent.ConcurrentHashMap;
12
13		public class ConcurrentHashMapTest extends JSR166TestCase {
14		public static void main(String[] args) {
15	<	junit.textui.TestRunner.run (suite());
15	>	junit.textui.TestRunner.run(suite());
16		}
17		public static Test suite() {
18		return new TestSuite(ConcurrentHashMapTest.class);
19		}
20
21		/**
22	<	* Create a map from Integers 1-5 to Strings "A"-"E".
22	>	* Returns a new map from Integers 1-5 to Strings "A"-"E".
23		*/
24		private static ConcurrentHashMap map5() {
25		ConcurrentHashMap map = new ConcurrentHashMap(5);
#	Line 36 | Line 34 | public class ConcurrentHashMapTest exten
34		return map;
35		}
36
37	+	// classes for testing Comparable fallbacks
38	+	static class BI implements Comparable<BI> {
39	+	private final int value;
40	+	BI(int value) { this.value = value; }
41	+	public int compareTo(BI other) {
42	+	return Integer.compare(value, other.value);
43	+	}
44	+	public boolean equals(Object x) {
45	+	return (x instanceof BI) && ((BI)x).value == value;
46	+	}
47	+	public int hashCode() { return 42; }
48	+	}
49	+	static class CI extends BI { CI(int value) { super(value); } }
50	+	static class DI extends BI { DI(int value) { super(value); } }
51	+
52	+	static class BS implements Comparable<BS> {
53	+	private final String value;
54	+	BS(String value) { this.value = value; }
55	+	public int compareTo(BS other) {
56	+	return value.compareTo(other.value);
57	+	}
58	+	public boolean equals(Object x) {
59	+	return (x instanceof BS) && value.equals(((BS)x).value);
60	+	}
61	+	public int hashCode() { return 42; }
62	+	}
63	+
64	+	static class LexicographicList<E extends Comparable<E>> extends ArrayList<E>
65	+	implements Comparable<LexicographicList<E>> {
66	+	LexicographicList(Collection<E> c) { super(c); }
67	+	LexicographicList(E e) { super(Collections.singleton(e)); }
68	+	public int compareTo(LexicographicList<E> other) {
69	+	int common = Math.min(size(), other.size());
70	+	int r = 0;
71	+	for (int i = 0; i < common; i++) {
72	+	if ((r = get(i).compareTo(other.get(i))) != 0)
73	+	break;
74	+	}
75	+	if (r == 0)
76	+	r = Integer.compare(size(), other.size());
77	+	return r;
78	+	}
79	+	private static final long serialVersionUID = 0;
80	+	}
81	+
82	+	/**
83	+	* Inserted elements that are subclasses of the same Comparable
84	+	* class are found.
85	+	*/
86	+	public void testComparableFamily() {
87	+	ConcurrentHashMap<BI, Boolean> m = new ConcurrentHashMap<>();
88	+	for (int i = 0; i < 1000; i++) {
89	+	assertTrue(m.put(new CI(i), true) == null);
90	+	}
91	+	for (int i = 0; i < 1000; i++) {
92	+	assertTrue(m.containsKey(new CI(i)));
93	+	assertTrue(m.containsKey(new DI(i)));
94	+	}
95	+	}
96	+
97	+	/**
98	+	* Elements of classes with erased generic type parameters based
99	+	* on Comparable can be inserted and found.
100	+	*/
101	+	public void testGenericComparable() {
102	+	ConcurrentHashMap<Object, Boolean> m = new ConcurrentHashMap<>();
103	+	for (int i = 0; i < 1000; i++) {
104	+	BI bi = new BI(i);
105	+	BS bs = new BS(String.valueOf(i));
106	+	LexicographicList<BI> bis = new LexicographicList<BI>(bi);
107	+	LexicographicList<BS> bss = new LexicographicList<BS>(bs);
108	+	assertTrue(m.putIfAbsent(bis, true) == null);
109	+	assertTrue(m.containsKey(bis));
110	+	if (m.putIfAbsent(bss, true) == null)
111	+	assertTrue(m.containsKey(bss));
112	+	assertTrue(m.containsKey(bis));
113	+	}
114	+	for (int i = 0; i < 1000; i++) {
115	+	assertTrue(m.containsKey(new ArrayList(Collections.singleton(new BI(i)))));
116	+	}
117	+	}
118	+
119	+	/**
120	+	* Elements of non-comparable classes equal to those of classes
121	+	* with erased generic type parameters based on Comparable can be
122	+	* inserted and found.
123	+	*/
124	+	public void testGenericComparable2() {
125	+	ConcurrentHashMap<Object, Boolean> m = new ConcurrentHashMap<>();
126	+	for (int i = 0; i < 1000; i++) {
127	+	m.put(new ArrayList(Collections.singleton(new BI(i))), true);
128	+	}
129	+
130	+	for (int i = 0; i < 1000; i++) {
131	+	LexicographicList<BI> bis = new LexicographicList<BI>(new BI(i));
132	+	assertTrue(m.containsKey(bis));
133	+	}
134	+	}
135	+
136		/**
137	<	*  clear removes all pairs
137	>	* clear removes all pairs
138		*/
139		public void testClear() {
140		ConcurrentHashMap map = map5();
141		map.clear();
142	<	assertEquals(map.size(), 0);
142	>	assertEquals(0, map.size());
143		}
144
145		/**
146	<	*  Maps with same contents are equal
146	>	* Maps with same contents are equal
147		*/
148		public void testEquals() {
149		ConcurrentHashMap map1 = map5();
#	Line 59 | Line 156 | public class ConcurrentHashMapTest exten
156		}
157
158		/**
159	<	*  contains returns true for contained value
159	>	* contains returns true for contained value
160		*/
161		public void testContains() {
162		ConcurrentHashMap map = map5();
#	Line 68 | Line 165 | public class ConcurrentHashMapTest exten
165		}
166
167		/**
168	<	*  containsKey returns true for contained key
168	>	* containsKey returns true for contained key
169		*/
170		public void testContainsKey() {
171		ConcurrentHashMap map = map5();
#	Line 77 | Line 174 | public class ConcurrentHashMapTest exten
174		}
175
176		/**
177	<	*  containsValue returns true for held values
177	>	* containsValue returns true for held values
178		*/
179		public void testContainsValue() {
180		ConcurrentHashMap map = map5();
#	Line 86 | Line 183 | public class ConcurrentHashMapTest exten
183		}
184
185		/**
186	<	*   enumeration returns an enumeration containing the correct
187	<	*   elements
186	>	* enumeration returns an enumeration containing the correct
187	>	* elements
188		*/
189		public void testEnumeration() {
190		ConcurrentHashMap map = map5();
#	Line 101 | Line 198 | public class ConcurrentHashMapTest exten
198		}
199
200		/**
201	<	*  get returns the correct element at the given key,
202	<	*  or null if not present
201	>	* get returns the correct element at the given key,
202	>	* or null if not present
203		*/
204		public void testGet() {
205		ConcurrentHashMap map = map5();
#	Line 112 | Line 209 | public class ConcurrentHashMapTest exten
209		}
210
211		/**
212	<	*  isEmpty is true of empty map and false for non-empty
212	>	* isEmpty is true of empty map and false for non-empty
213		*/
214		public void testIsEmpty() {
215		ConcurrentHashMap empty = new ConcurrentHashMap();
#	Line 122 | Line 219 | public class ConcurrentHashMapTest exten
219		}
220
221		/**
222	<	*   keys returns an enumeration containing all the keys from the map
222	>	* keys returns an enumeration containing all the keys from the map
223		*/
224		public void testKeys() {
225		ConcurrentHashMap map = map5();
#	Line 136 | Line 233 | public class ConcurrentHashMapTest exten
233		}
234
235		/**
236	<	*   keySet returns a Set containing all the keys
236	>	* keySet returns a Set containing all the keys
237		*/
238		public void testKeySet() {
239		ConcurrentHashMap map = map5();
#	Line 150 | Line 247 | public class ConcurrentHashMapTest exten
247		}
248
249		/**
250	<	*  keySet.toArray returns contains all keys
250	>	* keySet.toArray returns contains all keys
251		*/
252		public void testKeySetToArray() {
253		ConcurrentHashMap map = map5();
#	Line 163 | Line 260 | public class ConcurrentHashMapTest exten
260		}
261
262		/**
263	<	*  Values.toArray contains all values
263	>	* Values.toArray contains all values
264		*/
265		public void testValuesToArray() {
266		ConcurrentHashMap map = map5();
#	Line 179 | Line 276 | public class ConcurrentHashMapTest exten
276		}
277
278		/**
279	<	*  entrySet.toArray contains all entries
279	>	* entrySet.toArray contains all entries
280		*/
281		public void testEntrySetToArray() {
282		ConcurrentHashMap map = map5();
#	Line 226 | Line 323 | public class ConcurrentHashMapTest exten
323		}
324
325		/**
326	<	*   putAll  adds all key-value pairs from the given map
326	>	* putAll adds all key-value pairs from the given map
327		*/
328		public void testPutAll() {
329		ConcurrentHashMap empty = new ConcurrentHashMap();
#	Line 241 | Line 338 | public class ConcurrentHashMapTest exten
338		}
339
340		/**
341	<	*   putIfAbsent works when the given key is not present
341	>	* putIfAbsent works when the given key is not present
342		*/
343		public void testPutIfAbsent() {
344		ConcurrentHashMap map = map5();
#	Line 250 | Line 347 | public class ConcurrentHashMapTest exten
347		}
348
349		/**
350	<	*   putIfAbsent does not add the pair if the key is already present
350	>	* putIfAbsent does not add the pair if the key is already present
351		*/
352		public void testPutIfAbsent2() {
353		ConcurrentHashMap map = map5();
#	Line 258 | Line 355 | public class ConcurrentHashMapTest exten
355		}
356
357		/**
358	<	*   replace fails when the given key is not present
358	>	* replace fails when the given key is not present
359		*/
360		public void testReplace() {
361		ConcurrentHashMap map = map5();
#	Line 267 | Line 364 | public class ConcurrentHashMapTest exten
364		}
365
366		/**
367	<	*   replace succeeds if the key is already present
367	>	* replace succeeds if the key is already present
368		*/
369		public void testReplace2() {
370		ConcurrentHashMap map = map5();
#	Line 275 | Line 372 | public class ConcurrentHashMapTest exten
372		assertEquals("Z", map.get(one));
373		}
374
278	–
375		/**
376		* replace value fails when the given key not mapped to expected value
377		*/
#	Line 296 | Line 392 | public class ConcurrentHashMapTest exten
392		assertEquals("Z", map.get(one));
393		}
394
299	–
395		/**
396	<	*   remove removes the correct key-value pair from the map
396	>	* remove removes the correct key-value pair from the map
397		*/
398		public void testRemove() {
399		ConcurrentHashMap map = map5();
#	Line 321 | Line 416 | public class ConcurrentHashMapTest exten
416		}
417
418		/**
419	<	*   size returns the correct values
419	>	* size returns the correct values
420		*/
421		public void testSize() {
422		ConcurrentHashMap map = map5();
#	Line 337 | Line 432 | public class ConcurrentHashMapTest exten
432		ConcurrentHashMap map = map5();
433		String s = map.toString();
434		for (int i = 1; i <= 5; ++i) {
435	<	assertTrue(s.indexOf(String.valueOf(i)) >= 0);
435	>	assertTrue(s.contains(String.valueOf(i)));
436		}
437		}
438
#	Line 483 | Line 578 | public class ConcurrentHashMapTest exten
578		} catch (NullPointerException success) {}
579		}
580
486	–
581		/**
582		* replace(x, null) throws NPE
583		*/
#	Line 517 | Line 611 | public class ConcurrentHashMapTest exten
611		} catch (NullPointerException success) {}
612		}
613
520	–
614		/**
615		* remove(null) throws NPE
616		*/
#	Line 555 | Line 648 | public class ConcurrentHashMapTest exten
648		* A deserialized map equals original
649		*/
650		public void testSerialization() throws Exception {
651	<	ConcurrentHashMap q = map5();
651	>	Map x = map5();
652	>	Map y = serialClone(x);
653
654	<	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
655	<	ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout));
656	<	out.writeObject(q);
657	<	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));
654	>	assertNotSame(x, y);
655	>	assertEquals(x.size(), y.size());
656	>	assertEquals(x, y);
657	>	assertEquals(y, x);
658		}
659
573	–
660		/**
661		* SetValue of an EntrySet entry sets value in the map.
662		*/
#	Line 582 | Line 668 | public class ConcurrentHashMapTest exten
668		map.put(new Integer(i), new Integer(i));
669		assertFalse(map.isEmpty());
670		Map.Entry entry1 = (Map.Entry)map.entrySet().iterator().next();
671	<
672	<	// assert that entry1 is not 16
673	<	assertTrue("entry is 16, test not valid",
674	<	!entry1.getKey().equals(new Integer(16)));
675	<
676	<	// remove 16 (a different key) from map
677	<	// which just happens to cause entry1 to be cloned in map
678	<	map.remove(new Integer(16));
679	<	entry1.setValue("XYZ");
594	<	assertTrue(map.containsValue("XYZ")); // fails
671	>	// Unless it happens to be first (in which case remainder of
672	>	// test is skipped), remove a possibly-colliding key from map
673	>	// which, under some implementations, may cause entry1 to be
674	>	// cloned in map
675	>	if (!entry1.getKey().equals(new Integer(16))) {
676	>	map.remove(new Integer(16));
677	>	entry1.setValue("XYZ");
678	>	assertTrue(map.containsValue("XYZ")); // fails if write-through broken
679	>	}
680		}
681
682		}

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