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Comparing jsr166/src/test/tck/AtomicLongArrayTest.java (file contents):
Revision 1.14 by jsr166, Tue Nov 17 06:58:50 2009 UTC vs.
Revision 1.28 by jsr166, Wed Dec 31 19:05:42 2014 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.AtomicLongArray;
11	>
12	>	import junit.framework.Test;
13	>	import junit.framework.TestSuite;
14
15		public class AtomicLongArrayTest extends JSR166TestCase {
16	<	public static void main (String[] args) {
17	<	junit.textui.TestRunner.run (suite());
16	>	public static void main(String[] args) {
17	>	junit.textui.TestRunner.run(suite());
18		}
19		public static Test suite() {
20		return new TestSuite(AtomicLongArrayTest.class);
#	Line 23 | Line 24 | public class AtomicLongArrayTest extends
24		* constructor creates array of given size with all elements zero
25		*/
26		public void testConstructor() {
27	<	AtomicLongArray ai = new AtomicLongArray(SIZE);
28	<	for (int i = 0; i < SIZE; ++i)
29	<	assertEquals(0,ai.get(i));
27	>	AtomicLongArray aa = new AtomicLongArray(SIZE);
28	>	for (int i = 0; i < SIZE; i++)
29	>	assertEquals(0, aa.get(i));
30		}
31
32		/**
#	Line 34 | Line 35 | public class AtomicLongArrayTest extends
35		public void testConstructor2NPE() {
36		try {
37		long[] a = null;
38	<	AtomicLongArray ai = new AtomicLongArray(a);
38	>	AtomicLongArray aa = new AtomicLongArray(a);
39		shouldThrow();
40		} catch (NullPointerException success) {}
41		}
#	Line 43 | Line 44 | public class AtomicLongArrayTest extends
44		* constructor with array is of same size and has all elements
45		*/
46		public void testConstructor2() {
47	<	long[] a = { 17L, 3L, -42L, 99L, -7L};
48	<	AtomicLongArray ai = new AtomicLongArray(a);
49	<	assertEquals(a.length, ai.length());
50	<	for (int i = 0; i < a.length; ++i)
51	<	assertEquals(a[i], ai.get(i));
47	>	long[] a = { 17L, 3L, -42L, 99L, -7L };
48	>	AtomicLongArray aa = new AtomicLongArray(a);
49	>	assertEquals(a.length, aa.length());
50	>	for (int i = 0; i < a.length; i++)
51	>	assertEquals(a[i], aa.get(i));
52		}
53
54		/**
55		* get and set for out of bound indices throw IndexOutOfBoundsException
56		*/
57		public void testIndexing() {
58	<	AtomicLongArray ai = new AtomicLongArray(SIZE);
59	<	try {
60	<	ai.get(SIZE);
61	<	shouldThrow();
62	<	} catch (IndexOutOfBoundsException success) {
63	<	}
64	<	try {
65	<	ai.get(-1);
66	<	shouldThrow();
67	<	} catch (IndexOutOfBoundsException success) {
68	<	}
69	<	try {
70	<	ai.set(SIZE, 0);
71	<	shouldThrow();
72	<	} catch (IndexOutOfBoundsException success) {
73	<	}
74	<	try {
75	<	ai.set(-1, 0);
76	<	shouldThrow();
77	<	} catch (IndexOutOfBoundsException success) {
58	>	AtomicLongArray aa = new AtomicLongArray(SIZE);
59	>	for (int index : new int[] { -1, SIZE }) {
60	>	try {
61	>	aa.get(index);
62	>	shouldThrow();
63	>	} catch (IndexOutOfBoundsException success) {}
64	>	try {
65	>	aa.set(index, 1);
66	>	shouldThrow();
67	>	} catch (IndexOutOfBoundsException success) {}
68	>	try {
69	>	aa.lazySet(index, 1);
70	>	shouldThrow();
71	>	} catch (IndexOutOfBoundsException success) {}
72	>	try {
73	>	aa.compareAndSet(index, 1, 2);
74	>	shouldThrow();
75	>	} catch (IndexOutOfBoundsException success) {}
76	>	try {
77	>	aa.weakCompareAndSet(index, 1, 2);
78	>	shouldThrow();
79	>	} catch (IndexOutOfBoundsException success) {}
80	>	try {
81	>	aa.getAndAdd(index, 1);
82	>	shouldThrow();
83	>	} catch (IndexOutOfBoundsException success) {}
84	>	try {
85	>	aa.addAndGet(index, 1);
86	>	shouldThrow();
87	>	} catch (IndexOutOfBoundsException success) {}
88		}
89		}
90
#	Line 81 | Line 92 | public class AtomicLongArrayTest extends
92		* get returns the last value set at index
93		*/
94		public void testGetSet() {
95	<	AtomicLongArray ai = new AtomicLongArray(SIZE);
96	<	for (int i = 0; i < SIZE; ++i) {
97	<	ai.set(i, 1);
98	<	assertEquals(1,ai.get(i));
99	<	ai.set(i, 2);
100	<	assertEquals(2,ai.get(i));
101	<	ai.set(i, -3);
102	<	assertEquals(-3,ai.get(i));
95	>	AtomicLongArray aa = new AtomicLongArray(SIZE);
96	>	for (int i = 0; i < SIZE; i++) {
97	>	aa.set(i, 1);
98	>	assertEquals(1, aa.get(i));
99	>	aa.set(i, 2);
100	>	assertEquals(2, aa.get(i));
101	>	aa.set(i, -3);
102	>	assertEquals(-3, aa.get(i));
103		}
104		}
105
#	Line 96 | Line 107 | public class AtomicLongArrayTest extends
107		* get returns the last value lazySet at index by same thread
108		*/
109		public void testGetLazySet() {
110	<	AtomicLongArray ai = new AtomicLongArray(SIZE);
111	<	for (int i = 0; i < SIZE; ++i) {
112	<	ai.lazySet(i, 1);
113	<	assertEquals(1,ai.get(i));
114	<	ai.lazySet(i, 2);
115	<	assertEquals(2,ai.get(i));
116	<	ai.lazySet(i, -3);
117	<	assertEquals(-3,ai.get(i));
110	>	AtomicLongArray aa = new AtomicLongArray(SIZE);
111	>	for (int i = 0; i < SIZE; i++) {
112	>	aa.lazySet(i, 1);
113	>	assertEquals(1, aa.get(i));
114	>	aa.lazySet(i, 2);
115	>	assertEquals(2, aa.get(i));
116	>	aa.lazySet(i, -3);
117	>	assertEquals(-3, aa.get(i));
118		}
119		}
120
#	Line 111 | Line 122 | public class AtomicLongArrayTest extends
122		* compareAndSet succeeds in changing value if equal to expected else fails
123		*/
124		public void testCompareAndSet() {
125	<	AtomicLongArray ai = new AtomicLongArray(SIZE);
126	<	for (int i = 0; i < SIZE; ++i) {
127	<	ai.set(i, 1);
128	<	assertTrue(ai.compareAndSet(i, 1,2));
129	<	assertTrue(ai.compareAndSet(i, 2,-4));
130	<	assertEquals(-4,ai.get(i));
131	<	assertFalse(ai.compareAndSet(i, -5,7));
132	<	assertFalse((7 == ai.get(i)));
133	<	assertTrue(ai.compareAndSet(i, -4,7));
134	<	assertEquals(7,ai.get(i));
125	>	AtomicLongArray aa = new AtomicLongArray(SIZE);
126	>	for (int i = 0; i < SIZE; i++) {
127	>	aa.set(i, 1);
128	>	assertTrue(aa.compareAndSet(i, 1, 2));
129	>	assertTrue(aa.compareAndSet(i, 2, -4));
130	>	assertEquals(-4, aa.get(i));
131	>	assertFalse(aa.compareAndSet(i, -5, 7));
132	>	assertEquals(-4, aa.get(i));
133	>	assertTrue(aa.compareAndSet(i, -4, 7));
134	>	assertEquals(7, aa.get(i));
135		}
136		}
137
#	Line 141 | Line 152 | public class AtomicLongArrayTest extends
152		assertTrue(a.compareAndSet(0, 1, 2));
153		t.join(LONG_DELAY_MS);
154		assertFalse(t.isAlive());
155	<	assertEquals(a.get(0), 3);
155	>	assertEquals(3, a.get(0));
156		}
157
158		/**
#	Line 149 | Line 160 | public class AtomicLongArrayTest extends
160		* to expected
161		*/
162		public void testWeakCompareAndSet() {
163	<	AtomicLongArray ai = new AtomicLongArray(SIZE);
164	<	for (int i = 0; i < SIZE; ++i) {
165	<	ai.set(i, 1);
166	<	while (!ai.weakCompareAndSet(i, 1,2));
167	<	while (!ai.weakCompareAndSet(i, 2,-4));
168	<	assertEquals(-4,ai.get(i));
169	<	while (!ai.weakCompareAndSet(i, -4,7));
170	<	assertEquals(7,ai.get(i));
163	>	AtomicLongArray aa = new AtomicLongArray(SIZE);
164	>	for (int i = 0; i < SIZE; i++) {
165	>	aa.set(i, 1);
166	>	while (!aa.weakCompareAndSet(i, 1, 2));
167	>	while (!aa.weakCompareAndSet(i, 2, -4));
168	>	assertEquals(-4, aa.get(i));
169	>	while (!aa.weakCompareAndSet(i, -4, 7));
170	>	assertEquals(7, aa.get(i));
171		}
172		}
173
174		/**
175	<	*  getAndSet returns previous value and sets to given value at given index
175	>	* getAndSet returns previous value and sets to given value at given index
176		*/
177		public void testGetAndSet() {
178	<	AtomicLongArray ai = new AtomicLongArray(SIZE);
179	<	for (int i = 0; i < SIZE; ++i) {
180	<	ai.set(i, 1);
181	<	assertEquals(1,ai.getAndSet(i,0));
182	<	assertEquals(0,ai.getAndSet(i,-10));
183	<	assertEquals(-10,ai.getAndSet(i,1));
178	>	AtomicLongArray aa = new AtomicLongArray(SIZE);
179	>	for (int i = 0; i < SIZE; i++) {
180	>	aa.set(i, 1);
181	>	assertEquals(1, aa.getAndSet(i, 0));
182	>	assertEquals(0, aa.getAndSet(i, -10));
183	>	assertEquals(-10, aa.getAndSet(i, 1));
184		}
185		}
186
187		/**
188	<	*  getAndAdd returns previous value and adds given value
188	>	* getAndAdd returns previous value and adds given value
189		*/
190		public void testGetAndAdd() {
191	<	AtomicLongArray ai = new AtomicLongArray(SIZE);
192	<	for (int i = 0; i < SIZE; ++i) {
193	<	ai.set(i, 1);
194	<	assertEquals(1,ai.getAndAdd(i,2));
195	<	assertEquals(3,ai.get(i));
196	<	assertEquals(3,ai.getAndAdd(i,-4));
197	<	assertEquals(-1,ai.get(i));
191	>	AtomicLongArray aa = new AtomicLongArray(SIZE);
192	>	for (int i = 0; i < SIZE; i++) {
193	>	aa.set(i, 1);
194	>	assertEquals(1, aa.getAndAdd(i, 2));
195	>	assertEquals(3, aa.get(i));
196	>	assertEquals(3, aa.getAndAdd(i, -4));
197	>	assertEquals(-1, aa.get(i));
198		}
199		}
200
#	Line 191 | Line 202 | public class AtomicLongArrayTest extends
202		* getAndDecrement returns previous value and decrements
203		*/
204		public void testGetAndDecrement() {
205	<	AtomicLongArray ai = new AtomicLongArray(SIZE);
206	<	for (int i = 0; i < SIZE; ++i) {
207	<	ai.set(i, 1);
208	<	assertEquals(1,ai.getAndDecrement(i));
209	<	assertEquals(0,ai.getAndDecrement(i));
210	<	assertEquals(-1,ai.getAndDecrement(i));
205	>	AtomicLongArray aa = new AtomicLongArray(SIZE);
206	>	for (int i = 0; i < SIZE; i++) {
207	>	aa.set(i, 1);
208	>	assertEquals(1, aa.getAndDecrement(i));
209	>	assertEquals(0, aa.getAndDecrement(i));
210	>	assertEquals(-1, aa.getAndDecrement(i));
211		}
212		}
213
#	Line 204 | Line 215 | public class AtomicLongArrayTest extends
215		* getAndIncrement returns previous value and increments
216		*/
217		public void testGetAndIncrement() {
218	<	AtomicLongArray ai = new AtomicLongArray(SIZE);
219	<	for (int i = 0; i < SIZE; ++i) {
220	<	ai.set(i, 1);
221	<	assertEquals(1,ai.getAndIncrement(i));
222	<	assertEquals(2,ai.get(i));
223	<	ai.set(i,-2);
224	<	assertEquals(-2,ai.getAndIncrement(i));
225	<	assertEquals(-1,ai.getAndIncrement(i));
226	<	assertEquals(0,ai.getAndIncrement(i));
227	<	assertEquals(1,ai.get(i));
218	>	AtomicLongArray aa = new AtomicLongArray(SIZE);
219	>	for (int i = 0; i < SIZE; i++) {
220	>	aa.set(i, 1);
221	>	assertEquals(1, aa.getAndIncrement(i));
222	>	assertEquals(2, aa.get(i));
223	>	aa.set(i, -2);
224	>	assertEquals(-2, aa.getAndIncrement(i));
225	>	assertEquals(-1, aa.getAndIncrement(i));
226	>	assertEquals(0, aa.getAndIncrement(i));
227	>	assertEquals(1, aa.get(i));
228		}
229		}
230
231		/**
232	<	*  addAndGet adds given value to current, and returns current value
232	>	* addAndGet adds given value to current, and returns current value
233		*/
234		public void testAddAndGet() {
235	<	AtomicLongArray ai = new AtomicLongArray(SIZE);
236	<	for (int i = 0; i < SIZE; ++i) {
237	<	ai.set(i, 1);
238	<	assertEquals(3,ai.addAndGet(i,2));
239	<	assertEquals(3,ai.get(i));
240	<	assertEquals(-1,ai.addAndGet(i,-4));
241	<	assertEquals(-1,ai.get(i));
235	>	AtomicLongArray aa = new AtomicLongArray(SIZE);
236	>	for (int i = 0; i < SIZE; i++) {
237	>	aa.set(i, 1);
238	>	assertEquals(3, aa.addAndGet(i, 2));
239	>	assertEquals(3, aa.get(i));
240	>	assertEquals(-1, aa.addAndGet(i, -4));
241	>	assertEquals(-1, aa.get(i));
242		}
243		}
244
#	Line 235 | Line 246 | public class AtomicLongArrayTest extends
246		* decrementAndGet decrements and returns current value
247		*/
248		public void testDecrementAndGet() {
249	<	AtomicLongArray ai = new AtomicLongArray(SIZE);
250	<	for (int i = 0; i < SIZE; ++i) {
251	<	ai.set(i, 1);
252	<	assertEquals(0,ai.decrementAndGet(i));
253	<	assertEquals(-1,ai.decrementAndGet(i));
254	<	assertEquals(-2,ai.decrementAndGet(i));
255	<	assertEquals(-2,ai.get(i));
249	>	AtomicLongArray aa = new AtomicLongArray(SIZE);
250	>	for (int i = 0; i < SIZE; i++) {
251	>	aa.set(i, 1);
252	>	assertEquals(0, aa.decrementAndGet(i));
253	>	assertEquals(-1, aa.decrementAndGet(i));
254	>	assertEquals(-2, aa.decrementAndGet(i));
255	>	assertEquals(-2, aa.get(i));
256		}
257		}
258
#	Line 249 | Line 260 | public class AtomicLongArrayTest extends
260		* incrementAndGet increments and returns current value
261		*/
262		public void testIncrementAndGet() {
263	<	AtomicLongArray ai = new AtomicLongArray(SIZE);
264	<	for (int i = 0; i < SIZE; ++i) {
265	<	ai.set(i, 1);
266	<	assertEquals(2,ai.incrementAndGet(i));
267	<	assertEquals(2,ai.get(i));
268	<	ai.set(i, -2);
269	<	assertEquals(-1,ai.incrementAndGet(i));
270	<	assertEquals(0,ai.incrementAndGet(i));
271	<	assertEquals(1,ai.incrementAndGet(i));
272	<	assertEquals(1,ai.get(i));
263	>	AtomicLongArray aa = new AtomicLongArray(SIZE);
264	>	for (int i = 0; i < SIZE; i++) {
265	>	aa.set(i, 1);
266	>	assertEquals(2, aa.incrementAndGet(i));
267	>	assertEquals(2, aa.get(i));
268	>	aa.set(i, -2);
269	>	assertEquals(-1, aa.incrementAndGet(i));
270	>	assertEquals(0, aa.incrementAndGet(i));
271	>	assertEquals(1, aa.incrementAndGet(i));
272	>	assertEquals(1, aa.get(i));
273		}
274		}
275
276	<	static final long COUNTDOWN = 100000;
277	<
267	<	class Counter implements Runnable {
268	<	final AtomicLongArray ai;
276	>	class Counter extends CheckedRunnable {
277	>	final AtomicLongArray aa;
278		volatile long counts;
279	<	Counter(AtomicLongArray a) { ai = a; }
280	<	public void run() {
279	>	Counter(AtomicLongArray a) { aa = a; }
280	>	public void realRun() {
281		for (;;) {
282		boolean done = true;
283	<	for (int i = 0; i < ai.length(); ++i) {
284	<	long v = ai.get(i);
285	<	threadAssertTrue(v >= 0);
283	>	for (int i = 0; i < aa.length(); i++) {
284	>	long v = aa.get(i);
285	>	assertTrue(v >= 0);
286		if (v != 0) {
287		done = false;
288	<	if (ai.compareAndSet(i, v, v-1))
288	>	if (aa.compareAndSet(i, v, v-1))
289		++counts;
290		}
291		}
#	Line 291 | Line 300 | public class AtomicLongArrayTest extends
300		* update a number of times equal to total count
301		*/
302		public void testCountingInMultipleThreads() throws InterruptedException {
303	<	final AtomicLongArray ai = new AtomicLongArray(SIZE);
304	<	for (int i = 0; i < SIZE; ++i)
305	<	ai.set(i, COUNTDOWN);
306	<	Counter c1 = new Counter(ai);
307	<	Counter c2 = new Counter(ai);
303	>	final AtomicLongArray aa = new AtomicLongArray(SIZE);
304	>	long countdown = 10000;
305	>	for (int i = 0; i < SIZE; i++)
306	>	aa.set(i, countdown);
307	>	Counter c1 = new Counter(aa);
308	>	Counter c2 = new Counter(aa);
309		Thread t1 = new Thread(c1);
310		Thread t2 = new Thread(c2);
311		t1.start();
312		t2.start();
313		t1.join();
314		t2.join();
315	<	assertEquals(c1.counts+c2.counts, SIZE * COUNTDOWN);
315	>	assertEquals(c1.counts+c2.counts, SIZE * countdown);
316		}
317
318		/**
319		* a deserialized serialized array holds same values
320		*/
321		public void testSerialization() throws Exception {
322	<	AtomicLongArray l = new AtomicLongArray(SIZE);
323	<	for (int i = 0; i < SIZE; ++i)
324	<	l.set(i, -i);
325	<
326	<	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
327	<	ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout));
328	<	out.writeObject(l);
329	<	out.close();
320	<
321	<	ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray());
322	<	ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin));
323	<	AtomicLongArray r = (AtomicLongArray) in.readObject();
324	<	for (int i = 0; i < SIZE; ++i) {
325	<	assertEquals(l.get(i), r.get(i));
322	>	AtomicLongArray x = new AtomicLongArray(SIZE);
323	>	for (int i = 0; i < SIZE; i++)
324	>	x.set(i, -i);
325	>	AtomicLongArray y = serialClone(x);
326	>	assertNotSame(x, y);
327	>	assertEquals(x.length(), y.length());
328	>	for (int i = 0; i < SIZE; i++) {
329	>	assertEquals(x.get(i), y.get(i));
330		}
331		}
332
#	Line 330 | Line 334 | public class AtomicLongArrayTest extends
334		* toString returns current value.
335		*/
336		public void testToString() {
337	<	long[] a = { 17, 3, -42, 99, -7};
338	<	AtomicLongArray ai = new AtomicLongArray(a);
339	<	assertEquals(Arrays.toString(a), ai.toString());
337	>	long[] a = { 17, 3, -42, 99, -7 };
338	>	AtomicLongArray aa = new AtomicLongArray(a);
339	>	assertEquals(Arrays.toString(a), aa.toString());
340		}
341
338	–
342		}

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