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Comparing jsr166/src/test/tck/AtomicIntegerArrayTest.java (file contents):
Revision 1.9 by dl, Sat Jan 10 01:41:59 2004 UTC vs.
Revision 1.15 by jsr166, Tue Nov 17 06:58:50 2009 UTC

#	Line 2 | Line 2
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.
5	>	* Other contributors include Andrew Wright, Jeffrey Hayes,
6	>	* Pat Fisher, Mike Judd.
7		*/
8
9		import junit.framework.*;
#	Line 26 | Line 26 | public class AtomicIntegerArrayTest exte
26		*/
27		public void testConstructor() {
28		AtomicIntegerArray ai = new AtomicIntegerArray(SIZE);
29	<	for (int i = 0; i < SIZE; ++i)
29	>	for (int i = 0; i < SIZE; ++i)
30		assertEquals(0,ai.get(i));
31		}
32
#	Line 37 | Line 37 | public class AtomicIntegerArrayTest exte
37		try {
38		int[] a = null;
39		AtomicIntegerArray ai = new AtomicIntegerArray(a);
40	<	} catch (NullPointerException success) {
41	<	} catch (Exception ex) {
42	<	unexpectedException();
43	<	}
40	>	shouldThrow();
41	>	} catch (NullPointerException success) {}
42		}
43
44		/**
#	Line 50 | Line 48 | public class AtomicIntegerArrayTest exte
48		int[] a = { 17, 3, -42, 99, -7};
49		AtomicIntegerArray ai = new AtomicIntegerArray(a);
50		assertEquals(a.length, ai.length());
51	<	for (int i = 0; i < a.length; ++i)
51	>	for (int i = 0; i < a.length; ++i)
52		assertEquals(a[i], ai.get(i));
53		}
54
55		/**
56		* get and set for out of bound indices throw IndexOutOfBoundsException
57		*/
58	<	public void testIndexing(){
58	>	public void testIndexing() {
59		AtomicIntegerArray ai = new AtomicIntegerArray(SIZE);
60		try {
61		ai.get(SIZE);
62	<	} catch(IndexOutOfBoundsException success){
62	>	shouldThrow();
63	>	} catch (IndexOutOfBoundsException success) {
64		}
65		try {
66		ai.get(-1);
67	<	} catch(IndexOutOfBoundsException success){
67	>	shouldThrow();
68	>	} catch (IndexOutOfBoundsException success) {
69		}
70		try {
71		ai.set(SIZE, 0);
72	<	} catch(IndexOutOfBoundsException success){
72	>	shouldThrow();
73	>	} catch (IndexOutOfBoundsException success) {
74		}
75		try {
76		ai.set(-1, 0);
77	<	} catch(IndexOutOfBoundsException success){
77	>	shouldThrow();
78	>	} catch (IndexOutOfBoundsException success) {
79		}
80		}
81
#	Line 81 | Line 83 | public class AtomicIntegerArrayTest exte
83		* get returns the last value set at index
84		*/
85		public void testGetSet() {
86	<	AtomicIntegerArray ai = new AtomicIntegerArray(SIZE);
86	>	AtomicIntegerArray ai = new AtomicIntegerArray(SIZE);
87		for (int i = 0; i < SIZE; ++i) {
88		ai.set(i, 1);
89		assertEquals(1,ai.get(i));
#	Line 93 | Line 95 | public class AtomicIntegerArrayTest exte
95		}
96
97		/**
98	+	* get returns the last value lazySet at index by same thread
99	+	*/
100	+	public void testGetLazySet() {
101	+	AtomicIntegerArray ai = new AtomicIntegerArray(SIZE);
102	+	for (int i = 0; i < SIZE; ++i) {
103	+	ai.lazySet(i, 1);
104	+	assertEquals(1,ai.get(i));
105	+	ai.lazySet(i, 2);
106	+	assertEquals(2,ai.get(i));
107	+	ai.lazySet(i, -3);
108	+	assertEquals(-3,ai.get(i));
109	+	}
110	+	}
111	+
112	+	/**
113		* compareAndSet succeeds in changing value if equal to expected else fails
114		*/
115		public void testCompareAndSet() {
116	<	AtomicIntegerArray ai = new AtomicIntegerArray(SIZE);
116	>	AtomicIntegerArray ai = new AtomicIntegerArray(SIZE);
117		for (int i = 0; i < SIZE; ++i) {
118		ai.set(i, 1);
119		assertTrue(ai.compareAndSet(i, 1,2));
#	Line 113 | Line 130 | public class AtomicIntegerArrayTest exte
130		* compareAndSet in one thread enables another waiting for value
131		* to succeed
132		*/
133	<	public void testCompareAndSetInMultipleThreads() {
133	>	public void testCompareAndSetInMultipleThreads() throws Exception {
134		final AtomicIntegerArray a = new AtomicIntegerArray(1);
135		a.set(0, 1);
136	<	Thread t = new Thread(new Runnable() {
137	<	public void run() {
138	<	while(!a.compareAndSet(0, 2, 3)) Thread.yield();
139	<	}});
140	<	try {
141	<	t.start();
142	<	assertTrue(a.compareAndSet(0, 1, 2));
143	<	t.join(LONG_DELAY_MS);
144	<	assertFalse(t.isAlive());
145	<	assertEquals(a.get(0), 3);
146	<	}
130	<	catch(Exception e) {
131	<	unexpectedException();
132	<	}
136	>	Thread t = new Thread(new CheckedRunnable() {
137	>	public void realRun() {
138	>	while (!a.compareAndSet(0, 2, 3))
139	>	Thread.yield();
140	>	}});
141	>
142	>	t.start();
143	>	assertTrue(a.compareAndSet(0, 1, 2));
144	>	t.join(LONG_DELAY_MS);
145	>	assertFalse(t.isAlive());
146	>	assertEquals(a.get(0), 3);
147		}
148
149		/**
150		* repeated weakCompareAndSet succeeds in changing value when equal
151	<	* to expected
151	>	* to expected
152		*/
153		public void testWeakCompareAndSet() {
154	<	AtomicIntegerArray ai = new AtomicIntegerArray(SIZE);
154	>	AtomicIntegerArray ai = new AtomicIntegerArray(SIZE);
155		for (int i = 0; i < SIZE; ++i) {
156		ai.set(i, 1);
157	<	while(!ai.weakCompareAndSet(i, 1,2));
158	<	while(!ai.weakCompareAndSet(i, 2,-4));
157	>	while (!ai.weakCompareAndSet(i, 1,2));
158	>	while (!ai.weakCompareAndSet(i, 2,-4));
159		assertEquals(-4,ai.get(i));
160	<	while(!ai.weakCompareAndSet(i, -4,7));
160	>	while (!ai.weakCompareAndSet(i, -4,7));
161		assertEquals(7,ai.get(i));
162		}
163		}
#	Line 152 | Line 166 | public class AtomicIntegerArrayTest exte
166		*  getAndSet returns previous value and sets to given value at given index
167		*/
168		public void testGetAndSet() {
169	<	AtomicIntegerArray ai = new AtomicIntegerArray(SIZE);
169	>	AtomicIntegerArray ai = new AtomicIntegerArray(SIZE);
170		for (int i = 0; i < SIZE; ++i) {
171		ai.set(i, 1);
172		assertEquals(1,ai.getAndSet(i,0));
#	Line 165 | Line 179 | public class AtomicIntegerArrayTest exte
179		*  getAndAdd returns previous value and adds given value
180		*/
181		public void testGetAndAdd() {
182	<	AtomicIntegerArray ai = new AtomicIntegerArray(SIZE);
182	>	AtomicIntegerArray ai = new AtomicIntegerArray(SIZE);
183		for (int i = 0; i < SIZE; ++i) {
184		ai.set(i, 1);
185		assertEquals(1,ai.getAndAdd(i,2));
#	Line 179 | Line 193 | public class AtomicIntegerArrayTest exte
193		* getAndDecrement returns previous value and decrements
194		*/
195		public void testGetAndDecrement() {
196	<	AtomicIntegerArray ai = new AtomicIntegerArray(SIZE);
196	>	AtomicIntegerArray ai = new AtomicIntegerArray(SIZE);
197		for (int i = 0; i < SIZE; ++i) {
198		ai.set(i, 1);
199		assertEquals(1,ai.getAndDecrement(i));
#	Line 192 | Line 206 | public class AtomicIntegerArrayTest exte
206		* getAndIncrement returns previous value and increments
207		*/
208		public void testGetAndIncrement() {
209	<	AtomicIntegerArray ai = new AtomicIntegerArray(SIZE);
209	>	AtomicIntegerArray ai = new AtomicIntegerArray(SIZE);
210		for (int i = 0; i < SIZE; ++i) {
211		ai.set(i, 1);
212		assertEquals(1,ai.getAndIncrement(i));
#	Line 209 | Line 223 | public class AtomicIntegerArrayTest exte
223		*  addAndGet adds given value to current, and returns current value
224		*/
225		public void testAddAndGet() {
226	<	AtomicIntegerArray ai = new AtomicIntegerArray(SIZE);
226	>	AtomicIntegerArray ai = new AtomicIntegerArray(SIZE);
227		for (int i = 0; i < SIZE; ++i) {
228		ai.set(i, 1);
229		assertEquals(3,ai.addAndGet(i,2));
#	Line 223 | Line 237 | public class AtomicIntegerArrayTest exte
237		* decrementAndGet decrements and returns current value
238		*/
239		public void testDecrementAndGet() {
240	<	AtomicIntegerArray ai = new AtomicIntegerArray(SIZE);
240	>	AtomicIntegerArray ai = new AtomicIntegerArray(SIZE);
241		for (int i = 0; i < SIZE; ++i) {
242		ai.set(i, 1);
243		assertEquals(0,ai.decrementAndGet(i));
#	Line 237 | Line 251 | public class AtomicIntegerArrayTest exte
251		*  incrementAndGet increments and returns current value
252		*/
253		public void testIncrementAndGet() {
254	<	AtomicIntegerArray ai = new AtomicIntegerArray(SIZE);
254	>	AtomicIntegerArray ai = new AtomicIntegerArray(SIZE);
255		for (int i = 0; i < SIZE; ++i) {
256		ai.set(i, 1);
257		assertEquals(2,ai.incrementAndGet(i));
#	Line 251 | Line 265 | public class AtomicIntegerArrayTest exte
265		}
266
267		static final int COUNTDOWN = 100000;
268	<
268	>
269		class Counter implements Runnable {
270		final AtomicIntegerArray ai;
271		volatile int counts;
#	Line 278 | Line 292 | public class AtomicIntegerArrayTest exte
292		* Multiple threads using same array of counters successfully
293		* update a number of times equal to total count
294		*/
295	<	public void testCountingInMultipleThreads() {
296	<	try {
297	<	final AtomicIntegerArray ai = new AtomicIntegerArray(SIZE);
298	<	for (int i = 0; i < SIZE; ++i)
299	<	ai.set(i, COUNTDOWN);
300	<	Counter c1 = new Counter(ai);
301	<	Counter c2 = new Counter(ai);
302	<	Thread t1 = new Thread(c1);
303	<	Thread t2 = new Thread(c2);
304	<	t1.start();
305	<	t2.start();
306	<	t1.join();
307	<	t2.join();
294	<	assertEquals(c1.counts+c2.counts, SIZE * COUNTDOWN);
295	<	}
296	<	catch(InterruptedException ie) {
297	<	unexpectedException();
298	<	}
295	>	public void testCountingInMultipleThreads() throws InterruptedException {
296	>	final AtomicIntegerArray ai = new AtomicIntegerArray(SIZE);
297	>	for (int i = 0; i < SIZE; ++i)
298	>	ai.set(i, COUNTDOWN);
299	>	Counter c1 = new Counter(ai);
300	>	Counter c2 = new Counter(ai);
301	>	Thread t1 = new Thread(c1);
302	>	Thread t2 = new Thread(c2);
303	>	t1.start();
304	>	t2.start();
305	>	t1.join();
306	>	t2.join();
307	>	assertEquals(c1.counts+c2.counts, SIZE * COUNTDOWN);
308		}
309
310
311		/**
312		* a deserialized serialized array holds same values
313		*/
314	<	public void testSerialization() {
315	<	AtomicIntegerArray l = new AtomicIntegerArray(SIZE);
316	<	for (int i = 0; i < SIZE; ++i)
314	>	public void testSerialization() throws Exception {
315	>	AtomicIntegerArray l = new AtomicIntegerArray(SIZE);
316	>	for (int i = 0; i < SIZE; ++i)
317		l.set(i, -i);
318
319	<	try {
320	<	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
321	<	ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout));
322	<	out.writeObject(l);
323	<	out.close();
324	<
325	<	ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray());
326	<	ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin));
327	<	AtomicIntegerArray r = (AtomicIntegerArray) in.readObject();
328	<	for (int i = 0; i < SIZE; ++i) {
320	<	assertEquals(l.get(i), r.get(i));
321	<	}
322	<	} catch(Exception e){
323	<	e.printStackTrace();
324	<	unexpectedException();
319	>	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
320	>	ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout));
321	>	out.writeObject(l);
322	>	out.close();
323	>
324	>	ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray());
325	>	ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin));
326	>	AtomicIntegerArray r = (AtomicIntegerArray) in.readObject();
327	>	for (int i = 0; i < SIZE; ++i) {
328	>	assertEquals(l.get(i), r.get(i));
329		}
330		}
331
332
333		/**
334		* toString returns current value.
335	<	*/
335	>	*/
336		public void testToString() {
337		int[] a = { 17, 3, -42, 99, -7};
338		AtomicIntegerArray ai = new AtomicIntegerArray(a);

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