1 |
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/* |
2 |
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* Written by Doug Lea with assistance from members of JCP JSR-166 |
3 |
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* 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 |
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* Other contributors include Andrew Wright, Jeffrey Hayes, |
6 |
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* Pat Fisher, Mike Judd. |
7 |
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*/ |
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|
9 |
– |
import junit.framework.*; |
10 |
– |
import java.util.*; |
11 |
– |
import java.util.concurrent.*; |
9 |
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import static java.util.concurrent.TimeUnit.MILLISECONDS; |
10 |
< |
import java.io.*; |
10 |
> |
|
11 |
> |
import java.util.ArrayList; |
12 |
> |
import java.util.Arrays; |
13 |
> |
import java.util.Collection; |
14 |
> |
import java.util.Iterator; |
15 |
> |
import java.util.NoSuchElementException; |
16 |
> |
import java.util.Queue; |
17 |
> |
import java.util.concurrent.BlockingQueue; |
18 |
> |
import java.util.concurrent.CountDownLatch; |
19 |
> |
import java.util.concurrent.Executors; |
20 |
> |
import java.util.concurrent.ExecutorService; |
21 |
> |
import java.util.concurrent.LinkedBlockingQueue; |
22 |
> |
|
23 |
> |
import junit.framework.Test; |
24 |
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|
25 |
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public class LinkedBlockingQueueTest extends JSR166TestCase { |
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|
32 |
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|
33 |
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public static class Bounded extends BlockingQueueTest { |
34 |
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protected BlockingQueue emptyCollection() { |
35 |
< |
return new LinkedBlockingQueue(20); |
35 |
> |
return new LinkedBlockingQueue(SIZE); |
36 |
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} |
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} |
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|
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public static void main(String[] args) { |
40 |
< |
junit.textui.TestRunner.run(suite()); |
40 |
> |
main(suite(), args); |
41 |
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} |
42 |
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|
43 |
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public static Test suite() { |
44 |
+ |
class Implementation implements CollectionImplementation { |
45 |
+ |
public Class<?> klazz() { return LinkedBlockingQueue.class; } |
46 |
+ |
public Collection emptyCollection() { return new LinkedBlockingQueue(); } |
47 |
+ |
public Object makeElement(int i) { return i; } |
48 |
+ |
public boolean isConcurrent() { return true; } |
49 |
+ |
public boolean permitsNulls() { return false; } |
50 |
+ |
} |
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return newTestSuite(LinkedBlockingQueueTest.class, |
52 |
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new Unbounded().testSuite(), |
53 |
< |
new Bounded().testSuite()); |
53 |
> |
new Bounded().testSuite(), |
54 |
> |
CollectionTest.testSuite(new Implementation())); |
55 |
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} |
56 |
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|
39 |
– |
|
57 |
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/** |
58 |
< |
* Create a queue of given size containing consecutive |
59 |
< |
* Integers 0 ... n. |
58 |
> |
* Returns a new queue of given size containing consecutive |
59 |
> |
* Integers 0 ... n - 1. |
60 |
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*/ |
61 |
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private LinkedBlockingQueue<Integer> populatedQueue(int n) { |
62 |
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LinkedBlockingQueue<Integer> q = |
67 |
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assertFalse(q.isEmpty()); |
68 |
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assertEquals(0, q.remainingCapacity()); |
69 |
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assertEquals(n, q.size()); |
70 |
+ |
assertEquals((Integer) 0, q.peek()); |
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return q; |
72 |
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} |
73 |
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|
81 |
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} |
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|
83 |
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/** |
84 |
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* Constructor throws IAE if capacity argument nonpositive |
84 |
> |
* Constructor throws IllegalArgumentException if capacity argument nonpositive |
85 |
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*/ |
86 |
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public void testConstructor2() { |
87 |
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try { |
88 |
< |
LinkedBlockingQueue q = new LinkedBlockingQueue(0); |
88 |
> |
new LinkedBlockingQueue(0); |
89 |
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shouldThrow(); |
90 |
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} catch (IllegalArgumentException success) {} |
91 |
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} |
92 |
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|
93 |
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/** |
94 |
< |
* Initializing from null Collection throws NPE |
94 |
> |
* Initializing from null Collection throws NullPointerException |
95 |
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*/ |
96 |
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public void testConstructor3() { |
97 |
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try { |
98 |
< |
LinkedBlockingQueue q = new LinkedBlockingQueue(null); |
98 |
> |
new LinkedBlockingQueue(null); |
99 |
|
shouldThrow(); |
100 |
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} catch (NullPointerException success) {} |
101 |
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} |
102 |
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|
103 |
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/** |
104 |
< |
* Initializing from Collection of null elements throws NPE |
104 |
> |
* Initializing from Collection of null elements throws NullPointerException |
105 |
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*/ |
106 |
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public void testConstructor4() { |
107 |
+ |
Collection<Integer> elements = Arrays.asList(new Integer[SIZE]); |
108 |
|
try { |
109 |
< |
Integer[] ints = new Integer[SIZE]; |
91 |
< |
LinkedBlockingQueue q = new LinkedBlockingQueue(Arrays.asList(ints)); |
109 |
> |
new LinkedBlockingQueue(elements); |
110 |
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shouldThrow(); |
111 |
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} catch (NullPointerException success) {} |
112 |
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} |
113 |
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|
114 |
|
/** |
115 |
< |
* Initializing from Collection with some null elements throws NPE |
115 |
> |
* Initializing from Collection with some null elements throws |
116 |
> |
* NullPointerException |
117 |
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*/ |
118 |
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public void testConstructor5() { |
119 |
+ |
Integer[] ints = new Integer[SIZE]; |
120 |
+ |
for (int i = 0; i < SIZE - 1; ++i) |
121 |
+ |
ints[i] = new Integer(i); |
122 |
+ |
Collection<Integer> elements = Arrays.asList(ints); |
123 |
|
try { |
124 |
< |
Integer[] ints = new Integer[SIZE]; |
102 |
< |
for (int i = 0; i < SIZE-1; ++i) |
103 |
< |
ints[i] = new Integer(i); |
104 |
< |
LinkedBlockingQueue q = new LinkedBlockingQueue(Arrays.asList(ints)); |
124 |
> |
new LinkedBlockingQueue(elements); |
125 |
|
shouldThrow(); |
126 |
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} catch (NullPointerException success) {} |
127 |
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} |
157 |
|
* remainingCapacity decreases on add, increases on remove |
158 |
|
*/ |
159 |
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public void testRemainingCapacity() { |
160 |
< |
LinkedBlockingQueue q = populatedQueue(SIZE); |
160 |
> |
BlockingQueue q = populatedQueue(SIZE); |
161 |
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for (int i = 0; i < SIZE; ++i) { |
162 |
|
assertEquals(i, q.remainingCapacity()); |
163 |
< |
assertEquals(SIZE-i, q.size()); |
164 |
< |
q.remove(); |
163 |
> |
assertEquals(SIZE, q.size() + q.remainingCapacity()); |
164 |
> |
assertEquals(i, q.remove()); |
165 |
|
} |
166 |
|
for (int i = 0; i < SIZE; ++i) { |
167 |
< |
assertEquals(SIZE-i, q.remainingCapacity()); |
168 |
< |
assertEquals(i, q.size()); |
169 |
< |
q.add(new Integer(i)); |
167 |
> |
assertEquals(SIZE - i, q.remainingCapacity()); |
168 |
> |
assertEquals(SIZE, q.size() + q.remainingCapacity()); |
169 |
> |
assertTrue(q.add(i)); |
170 |
|
} |
171 |
|
} |
172 |
|
|
173 |
|
/** |
154 |
– |
* offer(null) throws NPE |
155 |
– |
*/ |
156 |
– |
public void testOfferNull() { |
157 |
– |
try { |
158 |
– |
LinkedBlockingQueue q = new LinkedBlockingQueue(1); |
159 |
– |
q.offer(null); |
160 |
– |
shouldThrow(); |
161 |
– |
} catch (NullPointerException success) {} |
162 |
– |
} |
163 |
– |
|
164 |
– |
/** |
165 |
– |
* add(null) throws NPE |
166 |
– |
*/ |
167 |
– |
public void testAddNull() { |
168 |
– |
try { |
169 |
– |
LinkedBlockingQueue q = new LinkedBlockingQueue(1); |
170 |
– |
q.add(null); |
171 |
– |
shouldThrow(); |
172 |
– |
} catch (NullPointerException success) {} |
173 |
– |
} |
174 |
– |
|
175 |
– |
/** |
174 |
|
* Offer succeeds if not full; fails if full |
175 |
|
*/ |
176 |
|
public void testOffer() { |
180 |
|
} |
181 |
|
|
182 |
|
/** |
183 |
< |
* add succeeds if not full; throws ISE if full |
183 |
> |
* add succeeds if not full; throws IllegalStateException if full |
184 |
|
*/ |
185 |
|
public void testAdd() { |
186 |
+ |
LinkedBlockingQueue q = new LinkedBlockingQueue(SIZE); |
187 |
+ |
for (int i = 0; i < SIZE; ++i) |
188 |
+ |
assertTrue(q.add(new Integer(i))); |
189 |
+ |
assertEquals(0, q.remainingCapacity()); |
190 |
|
try { |
189 |
– |
LinkedBlockingQueue q = new LinkedBlockingQueue(SIZE); |
190 |
– |
for (int i = 0; i < SIZE; ++i) { |
191 |
– |
assertTrue(q.add(new Integer(i))); |
192 |
– |
} |
193 |
– |
assertEquals(0, q.remainingCapacity()); |
191 |
|
q.add(new Integer(SIZE)); |
192 |
|
shouldThrow(); |
193 |
|
} catch (IllegalStateException success) {} |
194 |
|
} |
195 |
|
|
196 |
|
/** |
197 |
< |
* addAll(null) throws NPE |
201 |
< |
*/ |
202 |
< |
public void testAddAll1() { |
203 |
< |
try { |
204 |
< |
LinkedBlockingQueue q = new LinkedBlockingQueue(1); |
205 |
< |
q.addAll(null); |
206 |
< |
shouldThrow(); |
207 |
< |
} catch (NullPointerException success) {} |
208 |
< |
} |
209 |
< |
|
210 |
< |
/** |
211 |
< |
* addAll(this) throws IAE |
197 |
> |
* addAll(this) throws IllegalArgumentException |
198 |
|
*/ |
199 |
|
public void testAddAllSelf() { |
200 |
+ |
LinkedBlockingQueue q = populatedQueue(SIZE); |
201 |
|
try { |
215 |
– |
LinkedBlockingQueue q = populatedQueue(SIZE); |
202 |
|
q.addAll(q); |
203 |
|
shouldThrow(); |
204 |
|
} catch (IllegalArgumentException success) {} |
205 |
|
} |
206 |
|
|
207 |
|
/** |
222 |
– |
* addAll of a collection with null elements throws NPE |
223 |
– |
*/ |
224 |
– |
public void testAddAll2() { |
225 |
– |
try { |
226 |
– |
LinkedBlockingQueue q = new LinkedBlockingQueue(SIZE); |
227 |
– |
Integer[] ints = new Integer[SIZE]; |
228 |
– |
q.addAll(Arrays.asList(ints)); |
229 |
– |
shouldThrow(); |
230 |
– |
} catch (NullPointerException success) {} |
231 |
– |
} |
232 |
– |
|
233 |
– |
/** |
208 |
|
* addAll of a collection with any null elements throws NPE after |
209 |
|
* possibly adding some elements |
210 |
|
*/ |
211 |
|
public void testAddAll3() { |
212 |
+ |
LinkedBlockingQueue q = new LinkedBlockingQueue(SIZE); |
213 |
+ |
Integer[] ints = new Integer[SIZE]; |
214 |
+ |
for (int i = 0; i < SIZE - 1; ++i) |
215 |
+ |
ints[i] = new Integer(i); |
216 |
+ |
Collection<Integer> elements = Arrays.asList(ints); |
217 |
|
try { |
218 |
< |
LinkedBlockingQueue q = new LinkedBlockingQueue(SIZE); |
240 |
< |
Integer[] ints = new Integer[SIZE]; |
241 |
< |
for (int i = 0; i < SIZE-1; ++i) |
242 |
< |
ints[i] = new Integer(i); |
243 |
< |
q.addAll(Arrays.asList(ints)); |
218 |
> |
q.addAll(elements); |
219 |
|
shouldThrow(); |
220 |
|
} catch (NullPointerException success) {} |
221 |
|
} |
222 |
|
|
223 |
|
/** |
224 |
< |
* addAll throws ISE if not enough room |
224 |
> |
* addAll throws IllegalStateException if not enough room |
225 |
|
*/ |
226 |
|
public void testAddAll4() { |
227 |
+ |
LinkedBlockingQueue q = new LinkedBlockingQueue(SIZE - 1); |
228 |
+ |
Integer[] ints = new Integer[SIZE]; |
229 |
+ |
for (int i = 0; i < SIZE; ++i) |
230 |
+ |
ints[i] = new Integer(i); |
231 |
+ |
Collection<Integer> elements = Arrays.asList(ints); |
232 |
|
try { |
233 |
< |
LinkedBlockingQueue q = new LinkedBlockingQueue(1); |
254 |
< |
Integer[] ints = new Integer[SIZE]; |
255 |
< |
for (int i = 0; i < SIZE; ++i) |
256 |
< |
ints[i] = new Integer(i); |
257 |
< |
q.addAll(Arrays.asList(ints)); |
233 |
> |
q.addAll(elements); |
234 |
|
shouldThrow(); |
235 |
|
} catch (IllegalStateException success) {} |
236 |
|
} |
251 |
|
} |
252 |
|
|
253 |
|
/** |
278 |
– |
* put(null) throws NPE |
279 |
– |
*/ |
280 |
– |
public void testPutNull() throws InterruptedException { |
281 |
– |
try { |
282 |
– |
LinkedBlockingQueue q = new LinkedBlockingQueue(SIZE); |
283 |
– |
q.put(null); |
284 |
– |
shouldThrow(); |
285 |
– |
} catch (NullPointerException success) {} |
286 |
– |
} |
287 |
– |
|
288 |
– |
/** |
254 |
|
* all elements successfully put are contained |
255 |
|
*/ |
256 |
|
public void testPut() throws InterruptedException { |
257 |
|
LinkedBlockingQueue q = new LinkedBlockingQueue(SIZE); |
258 |
|
for (int i = 0; i < SIZE; ++i) { |
259 |
< |
Integer I = new Integer(i); |
260 |
< |
q.put(I); |
261 |
< |
assertTrue(q.contains(I)); |
259 |
> |
Integer x = new Integer(i); |
260 |
> |
q.put(x); |
261 |
> |
assertTrue(q.contains(x)); |
262 |
|
} |
263 |
|
assertEquals(0, q.remainingCapacity()); |
264 |
|
} |
268 |
|
*/ |
269 |
|
public void testBlockingPut() throws InterruptedException { |
270 |
|
final LinkedBlockingQueue q = new LinkedBlockingQueue(SIZE); |
271 |
< |
Thread t = new Thread(new CheckedRunnable() { |
271 |
> |
final CountDownLatch pleaseInterrupt = new CountDownLatch(1); |
272 |
> |
Thread t = newStartedThread(new CheckedRunnable() { |
273 |
|
public void realRun() throws InterruptedException { |
274 |
|
for (int i = 0; i < SIZE; ++i) |
275 |
|
q.put(i); |
276 |
|
assertEquals(SIZE, q.size()); |
277 |
|
assertEquals(0, q.remainingCapacity()); |
278 |
+ |
|
279 |
+ |
Thread.currentThread().interrupt(); |
280 |
|
try { |
281 |
|
q.put(99); |
282 |
|
shouldThrow(); |
283 |
|
} catch (InterruptedException success) {} |
284 |
+ |
assertFalse(Thread.interrupted()); |
285 |
+ |
|
286 |
+ |
pleaseInterrupt.countDown(); |
287 |
+ |
try { |
288 |
+ |
q.put(99); |
289 |
+ |
shouldThrow(); |
290 |
+ |
} catch (InterruptedException success) {} |
291 |
+ |
assertFalse(Thread.interrupted()); |
292 |
|
}}); |
293 |
|
|
294 |
< |
t.start(); |
295 |
< |
Thread.sleep(SHORT_DELAY_MS); |
294 |
> |
await(pleaseInterrupt); |
295 |
> |
assertThreadStaysAlive(t); |
296 |
|
t.interrupt(); |
297 |
< |
t.join(); |
297 |
> |
awaitTermination(t); |
298 |
|
assertEquals(SIZE, q.size()); |
299 |
|
assertEquals(0, q.remainingCapacity()); |
300 |
|
} |
301 |
|
|
302 |
|
/** |
303 |
< |
* put blocks waiting for take when full |
303 |
> |
* put blocks interruptibly waiting for take when full |
304 |
|
*/ |
305 |
|
public void testPutWithTake() throws InterruptedException { |
306 |
|
final int capacity = 2; |
307 |
|
final LinkedBlockingQueue q = new LinkedBlockingQueue(2); |
308 |
< |
Thread t = new Thread(new CheckedRunnable() { |
308 |
> |
final CountDownLatch pleaseTake = new CountDownLatch(1); |
309 |
> |
final CountDownLatch pleaseInterrupt = new CountDownLatch(1); |
310 |
> |
Thread t = newStartedThread(new CheckedRunnable() { |
311 |
|
public void realRun() throws InterruptedException { |
312 |
< |
for (int i = 0; i < capacity + 1; i++) |
312 |
> |
for (int i = 0; i < capacity; i++) |
313 |
|
q.put(i); |
314 |
+ |
pleaseTake.countDown(); |
315 |
+ |
q.put(86); |
316 |
+ |
|
317 |
+ |
pleaseInterrupt.countDown(); |
318 |
|
try { |
319 |
|
q.put(99); |
320 |
|
shouldThrow(); |
321 |
|
} catch (InterruptedException success) {} |
322 |
+ |
assertFalse(Thread.interrupted()); |
323 |
|
}}); |
324 |
|
|
325 |
< |
t.start(); |
326 |
< |
Thread.sleep(SHORT_DELAY_MS); |
344 |
< |
assertEquals(q.remainingCapacity(), 0); |
325 |
> |
await(pleaseTake); |
326 |
> |
assertEquals(0, q.remainingCapacity()); |
327 |
|
assertEquals(0, q.take()); |
328 |
< |
Thread.sleep(SHORT_DELAY_MS); |
328 |
> |
|
329 |
> |
await(pleaseInterrupt); |
330 |
> |
assertThreadStaysAlive(t); |
331 |
|
t.interrupt(); |
332 |
< |
t.join(); |
333 |
< |
assertEquals(q.remainingCapacity(), 0); |
332 |
> |
awaitTermination(t); |
333 |
> |
assertEquals(0, q.remainingCapacity()); |
334 |
|
} |
335 |
|
|
336 |
|
/** |
337 |
|
* timed offer times out if full and elements not taken |
338 |
|
*/ |
339 |
< |
public void testTimedOffer() throws InterruptedException { |
339 |
> |
public void testTimedOffer() { |
340 |
|
final LinkedBlockingQueue q = new LinkedBlockingQueue(2); |
341 |
< |
Thread t = new Thread(new CheckedRunnable() { |
341 |
> |
final CountDownLatch pleaseInterrupt = new CountDownLatch(1); |
342 |
> |
Thread t = newStartedThread(new CheckedRunnable() { |
343 |
|
public void realRun() throws InterruptedException { |
344 |
|
q.put(new Object()); |
345 |
|
q.put(new Object()); |
346 |
< |
assertFalse(q.offer(new Object(), SHORT_DELAY_MS, MILLISECONDS)); |
346 |
> |
long startTime = System.nanoTime(); |
347 |
> |
assertFalse(q.offer(new Object(), timeoutMillis(), MILLISECONDS)); |
348 |
> |
assertTrue(millisElapsedSince(startTime) >= timeoutMillis()); |
349 |
> |
pleaseInterrupt.countDown(); |
350 |
|
try { |
351 |
< |
q.offer(new Object(), LONG_DELAY_MS, MILLISECONDS); |
351 |
> |
q.offer(new Object(), 2 * LONG_DELAY_MS, MILLISECONDS); |
352 |
|
shouldThrow(); |
353 |
|
} catch (InterruptedException success) {} |
354 |
|
}}); |
355 |
|
|
356 |
< |
t.start(); |
357 |
< |
Thread.sleep(SMALL_DELAY_MS); |
356 |
> |
await(pleaseInterrupt); |
357 |
> |
assertThreadStaysAlive(t); |
358 |
|
t.interrupt(); |
359 |
< |
t.join(); |
359 |
> |
awaitTermination(t); |
360 |
|
} |
361 |
|
|
362 |
|
/** |
373 |
|
* Take removes existing elements until empty, then blocks interruptibly |
374 |
|
*/ |
375 |
|
public void testBlockingTake() throws InterruptedException { |
376 |
< |
final LinkedBlockingQueue q = populatedQueue(SIZE); |
377 |
< |
Thread t = new Thread(new CheckedRunnable() { |
376 |
> |
final BlockingQueue q = populatedQueue(SIZE); |
377 |
> |
final CountDownLatch pleaseInterrupt = new CountDownLatch(1); |
378 |
> |
Thread t = newStartedThread(new CheckedRunnable() { |
379 |
|
public void realRun() throws InterruptedException { |
380 |
|
for (int i = 0; i < SIZE; ++i) { |
381 |
|
assertEquals(i, q.take()); |
382 |
|
} |
383 |
+ |
|
384 |
+ |
Thread.currentThread().interrupt(); |
385 |
|
try { |
386 |
|
q.take(); |
387 |
|
shouldThrow(); |
388 |
|
} catch (InterruptedException success) {} |
389 |
+ |
assertFalse(Thread.interrupted()); |
390 |
+ |
|
391 |
+ |
pleaseInterrupt.countDown(); |
392 |
+ |
try { |
393 |
+ |
q.take(); |
394 |
+ |
shouldThrow(); |
395 |
+ |
} catch (InterruptedException success) {} |
396 |
+ |
assertFalse(Thread.interrupted()); |
397 |
|
}}); |
398 |
|
|
399 |
< |
t.start(); |
400 |
< |
Thread.sleep(SHORT_DELAY_MS); |
399 |
> |
await(pleaseInterrupt); |
400 |
> |
assertThreadStaysAlive(t); |
401 |
|
t.interrupt(); |
402 |
< |
t.join(); |
402 |
> |
awaitTermination(t); |
403 |
|
} |
404 |
|
|
405 |
|
/** |
428 |
|
* timed poll with nonzero timeout succeeds when non-empty, else times out |
429 |
|
*/ |
430 |
|
public void testTimedPoll() throws InterruptedException { |
431 |
< |
LinkedBlockingQueue q = populatedQueue(SIZE); |
431 |
> |
LinkedBlockingQueue<Integer> q = populatedQueue(SIZE); |
432 |
|
for (int i = 0; i < SIZE; ++i) { |
433 |
< |
assertEquals(i, q.poll(SHORT_DELAY_MS, MILLISECONDS)); |
434 |
< |
} |
435 |
< |
assertNull(q.poll(SHORT_DELAY_MS, MILLISECONDS)); |
433 |
> |
long startTime = System.nanoTime(); |
434 |
> |
assertEquals(i, (int) q.poll(LONG_DELAY_MS, MILLISECONDS)); |
435 |
> |
assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS); |
436 |
> |
} |
437 |
> |
long startTime = System.nanoTime(); |
438 |
> |
assertNull(q.poll(timeoutMillis(), MILLISECONDS)); |
439 |
> |
assertTrue(millisElapsedSince(startTime) >= timeoutMillis()); |
440 |
> |
checkEmpty(q); |
441 |
|
} |
442 |
|
|
443 |
|
/** |
445 |
|
* returning timeout status |
446 |
|
*/ |
447 |
|
public void testInterruptedTimedPoll() throws InterruptedException { |
448 |
< |
Thread t = new Thread(new CheckedRunnable() { |
448 |
> |
final BlockingQueue<Integer> q = populatedQueue(SIZE); |
449 |
> |
final CountDownLatch aboutToWait = new CountDownLatch(1); |
450 |
> |
Thread t = newStartedThread(new CheckedRunnable() { |
451 |
|
public void realRun() throws InterruptedException { |
452 |
< |
LinkedBlockingQueue q = populatedQueue(SIZE); |
452 |
> |
long startTime = System.nanoTime(); |
453 |
|
for (int i = 0; i < SIZE; ++i) { |
454 |
< |
assertEquals(i, q.poll(SHORT_DELAY_MS, MILLISECONDS)); |
454 |
> |
assertEquals(i, (int) q.poll(LONG_DELAY_MS, MILLISECONDS)); |
455 |
|
} |
456 |
+ |
aboutToWait.countDown(); |
457 |
|
try { |
458 |
< |
q.poll(SMALL_DELAY_MS, MILLISECONDS); |
458 |
> |
q.poll(LONG_DELAY_MS, MILLISECONDS); |
459 |
|
shouldThrow(); |
460 |
< |
} catch (InterruptedException success) {} |
460 |
> |
} catch (InterruptedException success) { |
461 |
> |
assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS); |
462 |
> |
} |
463 |
|
}}); |
464 |
|
|
465 |
< |
t.start(); |
466 |
< |
Thread.sleep(SHORT_DELAY_MS); |
465 |
> |
await(aboutToWait); |
466 |
> |
waitForThreadToEnterWaitState(t); |
467 |
|
t.interrupt(); |
468 |
< |
t.join(); |
468 |
> |
awaitTermination(t); |
469 |
> |
checkEmpty(q); |
470 |
|
} |
471 |
|
|
472 |
|
/** |
513 |
|
} |
514 |
|
|
515 |
|
/** |
506 |
– |
* remove(x) removes x and returns true if present |
507 |
– |
*/ |
508 |
– |
public void testRemoveElement() { |
509 |
– |
LinkedBlockingQueue q = populatedQueue(SIZE); |
510 |
– |
for (int i = 1; i < SIZE; i+=2) { |
511 |
– |
assertTrue(q.contains(i)); |
512 |
– |
assertTrue(q.remove(i)); |
513 |
– |
assertFalse(q.contains(i)); |
514 |
– |
assertTrue(q.contains(i-1)); |
515 |
– |
} |
516 |
– |
for (int i = 0; i < SIZE; i+=2) { |
517 |
– |
assertTrue(q.contains(i)); |
518 |
– |
assertTrue(q.remove(i)); |
519 |
– |
assertFalse(q.contains(i)); |
520 |
– |
assertFalse(q.remove(i+1)); |
521 |
– |
assertFalse(q.contains(i+1)); |
522 |
– |
} |
523 |
– |
assertTrue(q.isEmpty()); |
524 |
– |
} |
525 |
– |
|
526 |
– |
/** |
516 |
|
* An add following remove(x) succeeds |
517 |
|
*/ |
518 |
|
public void testRemoveElementAndAdd() throws InterruptedException { |
522 |
|
assertTrue(q.remove(new Integer(1))); |
523 |
|
assertTrue(q.remove(new Integer(2))); |
524 |
|
assertTrue(q.add(new Integer(3))); |
525 |
< |
assertTrue(q.take() != null); |
525 |
> |
assertNotNull(q.take()); |
526 |
|
} |
527 |
|
|
528 |
|
/** |
581 |
|
assertTrue(changed); |
582 |
|
|
583 |
|
assertTrue(q.containsAll(p)); |
584 |
< |
assertEquals(SIZE-i, q.size()); |
584 |
> |
assertEquals(SIZE - i, q.size()); |
585 |
|
p.remove(); |
586 |
|
} |
587 |
|
} |
594 |
|
LinkedBlockingQueue q = populatedQueue(SIZE); |
595 |
|
LinkedBlockingQueue p = populatedQueue(i); |
596 |
|
assertTrue(q.removeAll(p)); |
597 |
< |
assertEquals(SIZE-i, q.size()); |
597 |
> |
assertEquals(SIZE - i, q.size()); |
598 |
|
for (int j = 0; j < i; ++j) { |
599 |
< |
Integer I = (Integer)(p.remove()); |
600 |
< |
assertFalse(q.contains(I)); |
599 |
> |
Integer x = (Integer)(p.remove()); |
600 |
> |
assertFalse(q.contains(x)); |
601 |
|
} |
602 |
|
} |
603 |
|
} |
625 |
|
} |
626 |
|
|
627 |
|
/** |
639 |
– |
* toArray(null) throws NullPointerException |
640 |
– |
*/ |
641 |
– |
public void testToArray_NullArg() { |
642 |
– |
LinkedBlockingQueue q = populatedQueue(SIZE); |
643 |
– |
try { |
644 |
– |
q.toArray(null); |
645 |
– |
shouldThrow(); |
646 |
– |
} catch (NullPointerException success) {} |
647 |
– |
} |
648 |
– |
|
649 |
– |
/** |
628 |
|
* toArray(incompatible array type) throws ArrayStoreException |
629 |
|
*/ |
630 |
|
public void testToArray1_BadArg() { |
635 |
|
} catch (ArrayStoreException success) {} |
636 |
|
} |
637 |
|
|
660 |
– |
|
638 |
|
/** |
639 |
|
* iterator iterates through all elements |
640 |
|
*/ |
641 |
|
public void testIterator() throws InterruptedException { |
642 |
|
LinkedBlockingQueue q = populatedQueue(SIZE); |
643 |
|
Iterator it = q.iterator(); |
644 |
< |
while (it.hasNext()) { |
644 |
> |
int i; |
645 |
> |
for (i = 0; it.hasNext(); i++) |
646 |
> |
assertTrue(q.contains(it.next())); |
647 |
> |
assertEquals(i, SIZE); |
648 |
> |
assertIteratorExhausted(it); |
649 |
> |
|
650 |
> |
it = q.iterator(); |
651 |
> |
for (i = 0; it.hasNext(); i++) |
652 |
|
assertEquals(it.next(), q.take()); |
653 |
< |
} |
653 |
> |
assertEquals(i, SIZE); |
654 |
> |
assertIteratorExhausted(it); |
655 |
> |
} |
656 |
> |
|
657 |
> |
/** |
658 |
> |
* iterator of empty collection has no elements |
659 |
> |
*/ |
660 |
> |
public void testEmptyIterator() { |
661 |
> |
assertIteratorExhausted(new LinkedBlockingQueue().iterator()); |
662 |
|
} |
663 |
|
|
664 |
|
/** |
680 |
|
assertFalse(it.hasNext()); |
681 |
|
} |
682 |
|
|
691 |
– |
|
683 |
|
/** |
684 |
|
* iterator ordering is FIFO |
685 |
|
*/ |
711 |
|
assertEquals(0, q.size()); |
712 |
|
} |
713 |
|
|
723 |
– |
|
714 |
|
/** |
715 |
|
* toString contains toStrings of elements |
716 |
|
*/ |
718 |
|
LinkedBlockingQueue q = populatedQueue(SIZE); |
719 |
|
String s = q.toString(); |
720 |
|
for (int i = 0; i < SIZE; ++i) { |
721 |
< |
assertTrue(s.indexOf(String.valueOf(i)) >= 0); |
721 |
> |
assertTrue(s.contains(String.valueOf(i))); |
722 |
|
} |
723 |
|
} |
724 |
|
|
735 |
– |
|
725 |
|
/** |
726 |
|
* offer transfers elements across Executor tasks |
727 |
|
*/ |
729 |
|
final LinkedBlockingQueue q = new LinkedBlockingQueue(2); |
730 |
|
q.add(one); |
731 |
|
q.add(two); |
732 |
< |
ExecutorService executor = Executors.newFixedThreadPool(2); |
733 |
< |
executor.execute(new CheckedRunnable() { |
734 |
< |
public void realRun() throws InterruptedException { |
735 |
< |
assertFalse(q.offer(three)); |
736 |
< |
assertTrue(q.offer(three, MEDIUM_DELAY_MS, MILLISECONDS)); |
737 |
< |
assertEquals(0, q.remainingCapacity()); |
738 |
< |
}}); |
739 |
< |
|
740 |
< |
executor.execute(new CheckedRunnable() { |
741 |
< |
public void realRun() throws InterruptedException { |
742 |
< |
Thread.sleep(SMALL_DELAY_MS); |
743 |
< |
assertSame(one, q.take()); |
744 |
< |
}}); |
745 |
< |
|
746 |
< |
joinPool(executor); |
732 |
> |
final CheckedBarrier threadsStarted = new CheckedBarrier(2); |
733 |
> |
final ExecutorService executor = Executors.newFixedThreadPool(2); |
734 |
> |
try (PoolCleaner cleaner = cleaner(executor)) { |
735 |
> |
executor.execute(new CheckedRunnable() { |
736 |
> |
public void realRun() throws InterruptedException { |
737 |
> |
assertFalse(q.offer(three)); |
738 |
> |
threadsStarted.await(); |
739 |
> |
assertTrue(q.offer(three, LONG_DELAY_MS, MILLISECONDS)); |
740 |
> |
assertEquals(0, q.remainingCapacity()); |
741 |
> |
}}); |
742 |
> |
|
743 |
> |
executor.execute(new CheckedRunnable() { |
744 |
> |
public void realRun() throws InterruptedException { |
745 |
> |
threadsStarted.await(); |
746 |
> |
assertSame(one, q.take()); |
747 |
> |
}}); |
748 |
> |
} |
749 |
|
} |
750 |
|
|
751 |
|
/** |
752 |
< |
* poll retrieves elements across Executor threads |
752 |
> |
* timed poll retrieves elements across Executor threads |
753 |
|
*/ |
754 |
|
public void testPollInExecutor() { |
755 |
|
final LinkedBlockingQueue q = new LinkedBlockingQueue(2); |
756 |
< |
ExecutorService executor = Executors.newFixedThreadPool(2); |
757 |
< |
executor.execute(new CheckedRunnable() { |
758 |
< |
public void realRun() throws InterruptedException { |
759 |
< |
assertNull(q.poll()); |
760 |
< |
assertSame(one, q.poll(MEDIUM_DELAY_MS, MILLISECONDS)); |
761 |
< |
assertTrue(q.isEmpty()); |
762 |
< |
}}); |
763 |
< |
|
764 |
< |
executor.execute(new CheckedRunnable() { |
765 |
< |
public void realRun() throws InterruptedException { |
766 |
< |
Thread.sleep(SMALL_DELAY_MS); |
767 |
< |
q.put(one); |
768 |
< |
}}); |
769 |
< |
|
770 |
< |
joinPool(executor); |
756 |
> |
final CheckedBarrier threadsStarted = new CheckedBarrier(2); |
757 |
> |
final ExecutorService executor = Executors.newFixedThreadPool(2); |
758 |
> |
try (PoolCleaner cleaner = cleaner(executor)) { |
759 |
> |
executor.execute(new CheckedRunnable() { |
760 |
> |
public void realRun() throws InterruptedException { |
761 |
> |
assertNull(q.poll()); |
762 |
> |
threadsStarted.await(); |
763 |
> |
assertSame(one, q.poll(LONG_DELAY_MS, MILLISECONDS)); |
764 |
> |
checkEmpty(q); |
765 |
> |
}}); |
766 |
> |
|
767 |
> |
executor.execute(new CheckedRunnable() { |
768 |
> |
public void realRun() throws InterruptedException { |
769 |
> |
threadsStarted.await(); |
770 |
> |
q.put(one); |
771 |
> |
}}); |
772 |
> |
} |
773 |
|
} |
774 |
|
|
775 |
|
/** |
776 |
|
* A deserialized serialized queue has same elements in same order |
777 |
|
*/ |
778 |
|
public void testSerialization() throws Exception { |
779 |
< |
LinkedBlockingQueue q = populatedQueue(SIZE); |
780 |
< |
|
788 |
< |
ByteArrayOutputStream bout = new ByteArrayOutputStream(10000); |
789 |
< |
ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout)); |
790 |
< |
out.writeObject(q); |
791 |
< |
out.close(); |
792 |
< |
|
793 |
< |
ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray()); |
794 |
< |
ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin)); |
795 |
< |
LinkedBlockingQueue r = (LinkedBlockingQueue)in.readObject(); |
796 |
< |
assertEquals(q.size(), r.size()); |
797 |
< |
while (!q.isEmpty()) |
798 |
< |
assertEquals(q.remove(), r.remove()); |
799 |
< |
} |
800 |
< |
|
801 |
< |
/** |
802 |
< |
* drainTo(null) throws NPE |
803 |
< |
*/ |
804 |
< |
public void testDrainToNull() { |
805 |
< |
LinkedBlockingQueue q = populatedQueue(SIZE); |
806 |
< |
try { |
807 |
< |
q.drainTo(null); |
808 |
< |
shouldThrow(); |
809 |
< |
} catch (NullPointerException success) {} |
810 |
< |
} |
779 |
> |
Queue x = populatedQueue(SIZE); |
780 |
> |
Queue y = serialClone(x); |
781 |
|
|
782 |
< |
/** |
783 |
< |
* drainTo(this) throws IAE |
784 |
< |
*/ |
785 |
< |
public void testDrainToSelf() { |
786 |
< |
LinkedBlockingQueue q = populatedQueue(SIZE); |
787 |
< |
try { |
788 |
< |
q.drainTo(q); |
789 |
< |
shouldThrow(); |
790 |
< |
} catch (IllegalArgumentException success) {} |
782 |
> |
assertNotSame(x, y); |
783 |
> |
assertEquals(x.size(), y.size()); |
784 |
> |
assertEquals(x.toString(), y.toString()); |
785 |
> |
assertTrue(Arrays.equals(x.toArray(), y.toArray())); |
786 |
> |
while (!x.isEmpty()) { |
787 |
> |
assertFalse(y.isEmpty()); |
788 |
> |
assertEquals(x.remove(), y.remove()); |
789 |
> |
} |
790 |
> |
assertTrue(y.isEmpty()); |
791 |
|
} |
792 |
|
|
793 |
|
/** |
797 |
|
LinkedBlockingQueue q = populatedQueue(SIZE); |
798 |
|
ArrayList l = new ArrayList(); |
799 |
|
q.drainTo(l); |
800 |
< |
assertEquals(q.size(), 0); |
801 |
< |
assertEquals(l.size(), SIZE); |
800 |
> |
assertEquals(0, q.size()); |
801 |
> |
assertEquals(SIZE, l.size()); |
802 |
|
for (int i = 0; i < SIZE; ++i) |
803 |
|
assertEquals(l.get(i), new Integer(i)); |
804 |
|
q.add(zero); |
808 |
|
assertTrue(q.contains(one)); |
809 |
|
l.clear(); |
810 |
|
q.drainTo(l); |
811 |
< |
assertEquals(q.size(), 0); |
812 |
< |
assertEquals(l.size(), 2); |
811 |
> |
assertEquals(0, q.size()); |
812 |
> |
assertEquals(2, l.size()); |
813 |
|
for (int i = 0; i < 2; ++i) |
814 |
|
assertEquals(l.get(i), new Integer(i)); |
815 |
|
} |
821 |
|
final LinkedBlockingQueue q = populatedQueue(SIZE); |
822 |
|
Thread t = new Thread(new CheckedRunnable() { |
823 |
|
public void realRun() throws InterruptedException { |
824 |
< |
q.put(new Integer(SIZE+1)); |
824 |
> |
q.put(new Integer(SIZE + 1)); |
825 |
|
}}); |
826 |
|
|
827 |
|
t.start(); |
835 |
|
} |
836 |
|
|
837 |
|
/** |
868 |
– |
* drainTo(null, n) throws NPE |
869 |
– |
*/ |
870 |
– |
public void testDrainToNullN() { |
871 |
– |
LinkedBlockingQueue q = populatedQueue(SIZE); |
872 |
– |
try { |
873 |
– |
q.drainTo(null, 0); |
874 |
– |
shouldThrow(); |
875 |
– |
} catch (NullPointerException success) {} |
876 |
– |
} |
877 |
– |
|
878 |
– |
/** |
879 |
– |
* drainTo(this, n) throws IAE |
880 |
– |
*/ |
881 |
– |
public void testDrainToSelfN() { |
882 |
– |
LinkedBlockingQueue q = populatedQueue(SIZE); |
883 |
– |
try { |
884 |
– |
q.drainTo(q, 0); |
885 |
– |
shouldThrow(); |
886 |
– |
} catch (IllegalArgumentException success) {} |
887 |
– |
} |
888 |
– |
|
889 |
– |
/** |
838 |
|
* drainTo(c, n) empties first min(n, size) elements of queue into c |
839 |
|
*/ |
840 |
|
public void testDrainToN() { |
845 |
|
ArrayList l = new ArrayList(); |
846 |
|
q.drainTo(l, i); |
847 |
|
int k = (i < SIZE) ? i : SIZE; |
848 |
< |
assertEquals(l.size(), k); |
849 |
< |
assertEquals(q.size(), SIZE-k); |
848 |
> |
assertEquals(k, l.size()); |
849 |
> |
assertEquals(SIZE - k, q.size()); |
850 |
|
for (int j = 0; j < k; ++j) |
851 |
|
assertEquals(l.get(j), new Integer(j)); |
852 |
< |
while (q.poll() != null) ; |
852 |
> |
do {} while (q.poll() != null); |
853 |
> |
} |
854 |
> |
} |
855 |
> |
|
856 |
> |
/** |
857 |
> |
* remove(null), contains(null) always return false |
858 |
> |
*/ |
859 |
> |
public void testNeverContainsNull() { |
860 |
> |
Collection<?>[] qs = { |
861 |
> |
new LinkedBlockingQueue<Object>(), |
862 |
> |
populatedQueue(2), |
863 |
> |
}; |
864 |
> |
|
865 |
> |
for (Collection<?> q : qs) { |
866 |
> |
assertFalse(q.contains(null)); |
867 |
> |
assertFalse(q.remove(null)); |
868 |
|
} |
869 |
|
} |
870 |
|
|