[ViewVC] Diff of: jsr166/jsr166/src/test/tck/AtomicIntegerArrayTest.java

Comparing jsr166/src/test/tck/AtomicIntegerArrayTest.java (file contents):
Revision 1.15 by jsr166, Tue Nov 17 06:58:50 2009 UTC vs.
Revision 1.39 by dl, Tue Jan 26 13:33:05 2021 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.concurrent.atomic.*;
11	<	import java.io.*;
12	<	import java.util.*;
9	>	import java.util.Arrays;
10	>	import java.util.concurrent.atomic.AtomicIntegerArray;
11	>
12	>	import junit.framework.Test;
13	>	import junit.framework.TestSuite;
14
15		public class AtomicIntegerArrayTest extends JSR166TestCase {
16
17	<	public static void main (String[] args) {
18	<	junit.textui.TestRunner.run (suite());
17	>	public static void main(String[] args) {
18	>	main(suite(), args);
19		}
20		public static Test suite() {
21		return new TestSuite(AtomicIntegerArrayTest.class);
22		}
23
23	–
24		/**
25		* constructor creates array of given size with all elements zero
26		*/
27		public void testConstructor() {
28	<	AtomicIntegerArray ai = new AtomicIntegerArray(SIZE);
29	<	for (int i = 0; i < SIZE; ++i)
30	<	assertEquals(0,ai.get(i));
28	>	AtomicIntegerArray aa = new AtomicIntegerArray(SIZE);
29	>	for (int i = 0; i < SIZE; i++)
30	>	assertEquals(0, aa.get(i));
31		}
32
33		/**
#	Line 36 \| Line 36 \| public class AtomicIntegerArrayTest exte
36		public void testConstructor2NPE() {
37		try {
38		int[] a = null;
39	<	AtomicIntegerArray ai = new AtomicIntegerArray(a);
39	>	new AtomicIntegerArray(a);
40		shouldThrow();
41		} catch (NullPointerException success) {}
42		}
#	Line 45 \| Line 45 \| public class AtomicIntegerArrayTest exte
45		* constructor with array is of same size and has all elements
46		*/
47		public void testConstructor2() {
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)
52	<	assertEquals(a[i], ai.get(i));
48	>	int[] a = { 17, 3, -42, 99, -7 };
49	>	AtomicIntegerArray aa = new AtomicIntegerArray(a);
50	>	assertEquals(a.length, aa.length());
51	>	for (int i = 0; i < a.length; i++)
52	>	assertEquals(a[i], aa.get(i));
53		}
54
55		/**
56		* get and set for out of bound indices throw IndexOutOfBoundsException
57		*/
58	+	@SuppressWarnings("deprecation")
59		public void testIndexing() {
60	<	AtomicIntegerArray ai = new AtomicIntegerArray(SIZE);
61	<	try {
62	<	ai.get(SIZE);
63	<	shouldThrow();
64	<	} catch (IndexOutOfBoundsException success) {
65	<	}
66	<	try {
67	<	ai.get(-1);
68	<	shouldThrow();
69	<	} catch (IndexOutOfBoundsException success) {
70	<	}
71	<	try {
72	<	ai.set(SIZE, 0);
73	<	shouldThrow();
74	<	} catch (IndexOutOfBoundsException success) {
75	<	}
76	<	try {
77	<	ai.set(-1, 0);
78	<	shouldThrow();
79	<	} catch (IndexOutOfBoundsException success) {
60	>	AtomicIntegerArray aa = new AtomicIntegerArray(SIZE);
61	>	for (int index : new int[] { -1, SIZE }) {
62	>	try {
63	>	aa.get(index);
64	>	shouldThrow();
65	>	} catch (IndexOutOfBoundsException success) {}
66	>	try {
67	>	aa.set(index, 1);
68	>	shouldThrow();
69	>	} catch (IndexOutOfBoundsException success) {}
70	>	try {
71	>	aa.lazySet(index, 1);
72	>	shouldThrow();
73	>	} catch (IndexOutOfBoundsException success) {}
74	>	try {
75	>	aa.compareAndSet(index, 1, 2);
76	>	shouldThrow();
77	>	} catch (IndexOutOfBoundsException success) {}
78	>	try {
79	>	aa.weakCompareAndSet(index, 1, 2);
80	>	shouldThrow();
81	>	} catch (IndexOutOfBoundsException success) {}
82	>	try {
83	>	aa.getAndAdd(index, 1);
84	>	shouldThrow();
85	>	} catch (IndexOutOfBoundsException success) {}
86	>	try {
87	>	aa.addAndGet(index, 1);
88	>	shouldThrow();
89	>	} catch (IndexOutOfBoundsException success) {}
90		}
91		}
92
#	Line 83 \| Line 94 \| public class AtomicIntegerArrayTest exte
94		* get returns the last value set at index
95		*/
96		public void testGetSet() {
97	<	AtomicIntegerArray ai = new AtomicIntegerArray(SIZE);
98	<	for (int i = 0; i < SIZE; ++i) {
99	<	ai.set(i, 1);
100	<	assertEquals(1,ai.get(i));
101	<	ai.set(i, 2);
102	<	assertEquals(2,ai.get(i));
103	<	ai.set(i, -3);
104	<	assertEquals(-3,ai.get(i));
97	>	AtomicIntegerArray aa = new AtomicIntegerArray(SIZE);
98	>	for (int i = 0; i < SIZE; i++) {
99	>	aa.set(i, 1);
100	>	assertEquals(1, aa.get(i));
101	>	aa.set(i, 2);
102	>	assertEquals(2, aa.get(i));
103	>	aa.set(i, -3);
104	>	assertEquals(-3, aa.get(i));
105		}
106		}
107
#	Line 98 \| Line 109 \| public class AtomicIntegerArrayTest exte
109		* get returns the last value lazySet at index by same thread
110		*/
111		public void testGetLazySet() {
112	<	AtomicIntegerArray ai = new AtomicIntegerArray(SIZE);
113	<	for (int i = 0; i < SIZE; ++i) {
114	<	ai.lazySet(i, 1);
115	<	assertEquals(1,ai.get(i));
116	<	ai.lazySet(i, 2);
117	<	assertEquals(2,ai.get(i));
118	<	ai.lazySet(i, -3);
119	<	assertEquals(-3,ai.get(i));
112	>	AtomicIntegerArray aa = new AtomicIntegerArray(SIZE);
113	>	for (int i = 0; i < SIZE; i++) {
114	>	aa.lazySet(i, 1);
115	>	assertEquals(1, aa.get(i));
116	>	aa.lazySet(i, 2);
117	>	assertEquals(2, aa.get(i));
118	>	aa.lazySet(i, -3);
119	>	assertEquals(-3, aa.get(i));
120		}
121		}
122
#	Line 113 \| Line 124 \| public class AtomicIntegerArrayTest exte
124		* compareAndSet succeeds in changing value if equal to expected else fails
125		*/
126		public void testCompareAndSet() {
127	<	AtomicIntegerArray ai = new AtomicIntegerArray(SIZE);
128	<	for (int i = 0; i < SIZE; ++i) {
129	<	ai.set(i, 1);
130	<	assertTrue(ai.compareAndSet(i, 1,2));
131	<	assertTrue(ai.compareAndSet(i, 2,-4));
132	<	assertEquals(-4,ai.get(i));
133	<	assertFalse(ai.compareAndSet(i, -5,7));
134	<	assertFalse((7 == ai.get(i)));
135	<	assertTrue(ai.compareAndSet(i, -4,7));
136	<	assertEquals(7,ai.get(i));
127	>	AtomicIntegerArray aa = new AtomicIntegerArray(SIZE);
128	>	for (int i = 0; i < SIZE; i++) {
129	>	aa.set(i, 1);
130	>	assertTrue(aa.compareAndSet(i, 1, 2));
131	>	assertTrue(aa.compareAndSet(i, 2, -4));
132	>	assertEquals(-4, aa.get(i));
133	>	assertFalse(aa.compareAndSet(i, -5, 7));
134	>	assertEquals(-4, aa.get(i));
135	>	assertTrue(aa.compareAndSet(i, -4, 7));
136	>	assertEquals(7, aa.get(i));
137		}
138		}
139
#	Line 143 \| Line 154 \| public class AtomicIntegerArrayTest exte
154		assertTrue(a.compareAndSet(0, 1, 2));
155		t.join(LONG_DELAY_MS);
156		assertFalse(t.isAlive());
157	<	assertEquals(a.get(0), 3);
157	>	assertEquals(3, a.get(0));
158		}
159
160		/**
161		* repeated weakCompareAndSet succeeds in changing value when equal
162		* to expected
163		*/
164	+	@SuppressWarnings("deprecation")
165		public void testWeakCompareAndSet() {
166	<	AtomicIntegerArray ai = new AtomicIntegerArray(SIZE);
167	<	for (int i = 0; i < SIZE; ++i) {
168	<	ai.set(i, 1);
169	<	while (!ai.weakCompareAndSet(i, 1,2));
170	<	while (!ai.weakCompareAndSet(i, 2,-4));
171	<	assertEquals(-4,ai.get(i));
172	<	while (!ai.weakCompareAndSet(i, -4,7));
173	<	assertEquals(7,ai.get(i));
166	>	AtomicIntegerArray aa = new AtomicIntegerArray(SIZE);
167	>	for (int i = 0; i < SIZE; i++) {
168	>	aa.set(i, 1);
169	>	do {} while (!aa.weakCompareAndSet(i, 1, 2));
170	>	do {} while (!aa.weakCompareAndSet(i, 2, -4));
171	>	assertEquals(-4, aa.get(i));
172	>	do {} while (!aa.weakCompareAndSet(i, -4, 7));
173	>	assertEquals(7, aa.get(i));
174		}
175		}
176
177		/**
178	<	* getAndSet returns previous value and sets to given value at given index
178	>	* getAndSet returns previous value and sets to given value at given index
179		*/
180		public void testGetAndSet() {
181	<	AtomicIntegerArray ai = new AtomicIntegerArray(SIZE);
182	<	for (int i = 0; i < SIZE; ++i) {
183	<	ai.set(i, 1);
184	<	assertEquals(1,ai.getAndSet(i,0));
185	<	assertEquals(0,ai.getAndSet(i,-10));
186	<	assertEquals(-10,ai.getAndSet(i,1));
181	>	AtomicIntegerArray aa = new AtomicIntegerArray(SIZE);
182	>	for (int i = 0; i < SIZE; i++) {
183	>	aa.set(i, 1);
184	>	assertEquals(1, aa.getAndSet(i, 0));
185	>	assertEquals(0, aa.getAndSet(i, -10));
186	>	assertEquals(-10, aa.getAndSet(i, 1));
187		}
188		}
189
190		/**
191	<	* getAndAdd returns previous value and adds given value
191	>	* getAndAdd returns previous value and adds given value
192		*/
193		public void testGetAndAdd() {
194	<	AtomicIntegerArray ai = new AtomicIntegerArray(SIZE);
195	<	for (int i = 0; i < SIZE; ++i) {
196	<	ai.set(i, 1);
197	<	assertEquals(1,ai.getAndAdd(i,2));
198	<	assertEquals(3,ai.get(i));
199	<	assertEquals(3,ai.getAndAdd(i,-4));
200	<	assertEquals(-1,ai.get(i));
194	>	AtomicIntegerArray aa = new AtomicIntegerArray(SIZE);
195	>	for (int i = 0; i < SIZE; i++) {
196	>	aa.set(i, 1);
197	>	assertEquals(1, aa.getAndAdd(i, 2));
198	>	assertEquals(3, aa.get(i));
199	>	assertEquals(3, aa.getAndAdd(i, -4));
200	>	assertEquals(-1, aa.get(i));
201		}
202		}
203
#	Line 193 \| Line 205 \| public class AtomicIntegerArrayTest exte
205		* getAndDecrement returns previous value and decrements
206		*/
207		public void testGetAndDecrement() {
208	<	AtomicIntegerArray ai = new AtomicIntegerArray(SIZE);
209	<	for (int i = 0; i < SIZE; ++i) {
210	<	ai.set(i, 1);
211	<	assertEquals(1,ai.getAndDecrement(i));
212	<	assertEquals(0,ai.getAndDecrement(i));
213	<	assertEquals(-1,ai.getAndDecrement(i));
208	>	AtomicIntegerArray aa = new AtomicIntegerArray(SIZE);
209	>	for (int i = 0; i < SIZE; i++) {
210	>	aa.set(i, 1);
211	>	assertEquals(1, aa.getAndDecrement(i));
212	>	assertEquals(0, aa.getAndDecrement(i));
213	>	assertEquals(-1, aa.getAndDecrement(i));
214		}
215		}
216
#	Line 206 \| Line 218 \| public class AtomicIntegerArrayTest exte
218		* getAndIncrement returns previous value and increments
219		*/
220		public void testGetAndIncrement() {
221	<	AtomicIntegerArray ai = new AtomicIntegerArray(SIZE);
222	<	for (int i = 0; i < SIZE; ++i) {
223	<	ai.set(i, 1);
224	<	assertEquals(1,ai.getAndIncrement(i));
225	<	assertEquals(2,ai.get(i));
226	<	ai.set(i,-2);
227	<	assertEquals(-2,ai.getAndIncrement(i));
228	<	assertEquals(-1,ai.getAndIncrement(i));
229	<	assertEquals(0,ai.getAndIncrement(i));
230	<	assertEquals(1,ai.get(i));
221	>	AtomicIntegerArray aa = new AtomicIntegerArray(SIZE);
222	>	for (int i = 0; i < SIZE; i++) {
223	>	aa.set(i, 1);
224	>	assertEquals(1, aa.getAndIncrement(i));
225	>	assertEquals(2, aa.get(i));
226	>	aa.set(i, -2);
227	>	assertEquals(-2, aa.getAndIncrement(i));
228	>	assertEquals(-1, aa.getAndIncrement(i));
229	>	assertEquals(0, aa.getAndIncrement(i));
230	>	assertEquals(1, aa.get(i));
231		}
232		}
233
234		/**
235	<	* addAndGet adds given value to current, and returns current value
235	>	* addAndGet adds given value to current, and returns current value
236		*/
237		public void testAddAndGet() {
238	<	AtomicIntegerArray ai = new AtomicIntegerArray(SIZE);
239	<	for (int i = 0; i < SIZE; ++i) {
240	<	ai.set(i, 1);
241	<	assertEquals(3,ai.addAndGet(i,2));
242	<	assertEquals(3,ai.get(i));
243	<	assertEquals(-1,ai.addAndGet(i,-4));
244	<	assertEquals(-1,ai.get(i));
238	>	AtomicIntegerArray aa = new AtomicIntegerArray(SIZE);
239	>	for (int i = 0; i < SIZE; i++) {
240	>	aa.set(i, 1);
241	>	assertEquals(3, aa.addAndGet(i, 2));
242	>	assertEquals(3, aa.get(i));
243	>	assertEquals(-1, aa.addAndGet(i, -4));
244	>	assertEquals(-1, aa.get(i));
245		}
246		}
247
#	Line 237 \| Line 249 \| public class AtomicIntegerArrayTest exte
249		* decrementAndGet decrements and returns current value
250		*/
251		public void testDecrementAndGet() {
252	<	AtomicIntegerArray ai = new AtomicIntegerArray(SIZE);
253	<	for (int i = 0; i < SIZE; ++i) {
254	<	ai.set(i, 1);
255	<	assertEquals(0,ai.decrementAndGet(i));
256	<	assertEquals(-1,ai.decrementAndGet(i));
257	<	assertEquals(-2,ai.decrementAndGet(i));
258	<	assertEquals(-2,ai.get(i));
252	>	AtomicIntegerArray aa = new AtomicIntegerArray(SIZE);
253	>	for (int i = 0; i < SIZE; i++) {
254	>	aa.set(i, 1);
255	>	assertEquals(0, aa.decrementAndGet(i));
256	>	assertEquals(-1, aa.decrementAndGet(i));
257	>	assertEquals(-2, aa.decrementAndGet(i));
258	>	assertEquals(-2, aa.get(i));
259		}
260		}
261
262		/**
263	<	* incrementAndGet increments and returns current value
263	>	* incrementAndGet increments and returns current value
264		*/
265		public void testIncrementAndGet() {
266	<	AtomicIntegerArray ai = new AtomicIntegerArray(SIZE);
267	<	for (int i = 0; i < SIZE; ++i) {
268	<	ai.set(i, 1);
269	<	assertEquals(2,ai.incrementAndGet(i));
270	<	assertEquals(2,ai.get(i));
271	<	ai.set(i, -2);
272	<	assertEquals(-1,ai.incrementAndGet(i));
273	<	assertEquals(0,ai.incrementAndGet(i));
274	<	assertEquals(1,ai.incrementAndGet(i));
275	<	assertEquals(1,ai.get(i));
266	>	AtomicIntegerArray aa = new AtomicIntegerArray(SIZE);
267	>	for (int i = 0; i < SIZE; i++) {
268	>	aa.set(i, 1);
269	>	assertEquals(2, aa.incrementAndGet(i));
270	>	assertEquals(2, aa.get(i));
271	>	aa.set(i, -2);
272	>	assertEquals(-1, aa.incrementAndGet(i));
273	>	assertEquals(0, aa.incrementAndGet(i));
274	>	assertEquals(1, aa.incrementAndGet(i));
275	>	assertEquals(1, aa.get(i));
276		}
277		}
278
279	<	static final int COUNTDOWN = 100000;
280	<
281	<	class Counter implements Runnable {
282	<	final AtomicIntegerArray ai;
283	<	volatile int counts;
272	<	Counter(AtomicIntegerArray a) { ai = a; }
273	<	public void run() {
279	>	class Counter extends CheckedRunnable {
280	>	final AtomicIntegerArray aa;
281	>	int decs;
282	>	Counter(AtomicIntegerArray a) { aa = a; }
283	>	public void realRun() {
284		for (;;) {
285		boolean done = true;
286	<	for (int i = 0; i < ai.length(); ++i) {
287	<	int v = ai.get(i);
288	<	threadAssertTrue(v >= 0);
286	>	for (int i = 0; i < aa.length(); i++) {
287	>	int v = aa.get(i);
288	>	assertTrue(v >= 0);
289		if (v != 0) {
290		done = false;
291	<	if (ai.compareAndSet(i, v, v-1))
292	<	++counts;
291	>	if (aa.compareAndSet(i, v, v - 1))
292	>	decs++;
293		}
294		}
295		if (done)
#	Line 293 \| Line 303 \| public class AtomicIntegerArrayTest exte
303		* update a number of times equal to total count
304		*/
305		public void testCountingInMultipleThreads() throws InterruptedException {
306	<	final AtomicIntegerArray ai = new AtomicIntegerArray(SIZE);
307	<	for (int i = 0; i < SIZE; ++i)
308	<	ai.set(i, COUNTDOWN);
309	<	Counter c1 = new Counter(ai);
310	<	Counter c2 = new Counter(ai);
311	<	Thread t1 = new Thread(c1);
312	<	Thread t2 = new Thread(c2);
313	<	t1.start();
304	<	t2.start();
306	>	final AtomicIntegerArray aa = new AtomicIntegerArray(SIZE);
307	>	int countdown = 10000;
308	>	for (int i = 0; i < SIZE; i++)
309	>	aa.set(i, countdown);
310	>	Counter c1 = new Counter(aa);
311	>	Counter c2 = new Counter(aa);
312	>	Thread t1 = newStartedThread(c1);
313	>	Thread t2 = newStartedThread(c2);
314		t1.join();
315		t2.join();
316	<	assertEquals(c1.counts+c2.counts, SIZE * COUNTDOWN);
316	>	assertEquals(c1.decs + c2.decs, SIZE * countdown);
317		}
318
310	–
319		/**
320	<	* a deserialized serialized array holds same values
320	>	* a deserialized/reserialized array holds same values in same order
321		*/
322		public void testSerialization() throws Exception {
323	<	AtomicIntegerArray l = new AtomicIntegerArray(SIZE);
324	<	for (int i = 0; i < SIZE; ++i)
325	<	l.set(i, -i);
326	<
327	<	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
328	<	ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout));
329	<	out.writeObject(l);
330	<	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));
323	>	AtomicIntegerArray x = new AtomicIntegerArray(SIZE);
324	>	for (int i = 0; i < SIZE; i++)
325	>	x.set(i, -i);
326	>	AtomicIntegerArray y = serialClone(x);
327	>	assertNotSame(x, y);
328	>	assertEquals(x.length(), y.length());
329	>	for (int i = 0; i < SIZE; i++) {
330	>	assertEquals(x.get(i), y.get(i));
331		}
332		}
333
332	–
334		/**
335		* toString returns current value.
336		*/
337		public void testToString() {
338	<	int[] a = { 17, 3, -42, 99, -7};
339	<	AtomicIntegerArray ai = new AtomicIntegerArray(a);
340	<	assertEquals(Arrays.toString(a), ai.toString());
338	>	int[] a = { 17, 3, -42, 99, -7 };
339	>	AtomicIntegerArray aa = new AtomicIntegerArray(a);
340	>	assertEquals(Arrays.toString(a), aa.toString());
341		}
342
343		}

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Comparing jsr166/src/test/tck/AtomicIntegerArrayTest.java (file contents): Revision 1.15 by jsr166, Tue Nov 17 06:58:50 2009 UTC vs. Revision 1.39 by dl, Tue Jan 26 13:33:05 2021 UTC

Diff Legend

Comparing jsr166/src/test/tck/AtomicIntegerArrayTest.java (file contents):
Revision 1.15 by jsr166, Tue Nov 17 06:58:50 2009 UTC vs.
Revision 1.39 by dl, Tue Jan 26 13:33:05 2021 UTC