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 |
5 |
* Other contributors include Andrew Wright, Jeffrey Hayes, |
6 |
* Pat Fisher, Mike Judd. |
7 |
*/ |
8 |
|
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import junit.framework.*; |
10 |
import java.util.*; |
11 |
import java.util.concurrent.*; |
12 |
import java.io.*; |
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|
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public class PriorityBlockingQueueTest extends JSR166TestCase { |
15 |
public static void main(String[] args) { |
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junit.textui.TestRunner.run (suite()); |
17 |
} |
18 |
public static Test suite() { |
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return new TestSuite(PriorityBlockingQueueTest.class); |
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} |
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|
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private static final int NOCAP = Integer.MAX_VALUE; |
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|
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/** Sample Comparator */ |
25 |
static class MyReverseComparator implements Comparator { |
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public int compare(Object x, Object y) { |
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int i = ((Integer)x).intValue(); |
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int j = ((Integer)y).intValue(); |
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if (i < j) return 1; |
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if (i > j) return -1; |
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return 0; |
32 |
} |
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} |
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|
35 |
/** |
36 |
* Create a queue of given size containing consecutive |
37 |
* Integers 0 ... n. |
38 |
*/ |
39 |
private PriorityBlockingQueue populatedQueue(int n) { |
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PriorityBlockingQueue q = new PriorityBlockingQueue(n); |
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assertTrue(q.isEmpty()); |
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for(int i = n-1; i >= 0; i-=2) |
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assertTrue(q.offer(new Integer(i))); |
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for(int i = (n & 1); i < n; i+=2) |
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assertTrue(q.offer(new Integer(i))); |
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assertFalse(q.isEmpty()); |
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assertEquals(NOCAP, q.remainingCapacity()); |
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assertEquals(n, q.size()); |
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return q; |
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} |
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|
52 |
/** |
53 |
* A new queue has unbounded capacity |
54 |
*/ |
55 |
public void testConstructor1() { |
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assertEquals(NOCAP, new PriorityBlockingQueue(SIZE).remainingCapacity()); |
57 |
} |
58 |
|
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/** |
60 |
* Constructor throws IAE if capacity argument nonpositive |
61 |
*/ |
62 |
public void testConstructor2() { |
63 |
try { |
64 |
PriorityBlockingQueue q = new PriorityBlockingQueue(0); |
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shouldThrow(); |
66 |
} |
67 |
catch (IllegalArgumentException success) {} |
68 |
} |
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|
70 |
/** |
71 |
* Initializing from null Collection throws NPE |
72 |
*/ |
73 |
public void testConstructor3() { |
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try { |
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PriorityBlockingQueue q = new PriorityBlockingQueue(null); |
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shouldThrow(); |
77 |
} |
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catch (NullPointerException success) {} |
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} |
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|
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/** |
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* Initializing from Collection of null elements throws NPE |
83 |
*/ |
84 |
public void testConstructor4() { |
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try { |
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Integer[] ints = new Integer[SIZE]; |
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PriorityBlockingQueue q = new PriorityBlockingQueue(Arrays.asList(ints)); |
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shouldThrow(); |
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} |
90 |
catch (NullPointerException success) {} |
91 |
} |
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|
93 |
/** |
94 |
* Initializing from Collection with some null elements throws NPE |
95 |
*/ |
96 |
public void testConstructor5() { |
97 |
try { |
98 |
Integer[] ints = new Integer[SIZE]; |
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for (int i = 0; i < SIZE-1; ++i) |
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ints[i] = new Integer(i); |
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PriorityBlockingQueue q = new PriorityBlockingQueue(Arrays.asList(ints)); |
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shouldThrow(); |
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} |
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catch (NullPointerException success) {} |
105 |
} |
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|
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/** |
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* Queue contains all elements of collection used to initialize |
109 |
*/ |
110 |
public void testConstructor6() { |
111 |
try { |
112 |
Integer[] ints = new Integer[SIZE]; |
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for (int i = 0; i < SIZE; ++i) |
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ints[i] = new Integer(i); |
115 |
PriorityBlockingQueue q = new PriorityBlockingQueue(Arrays.asList(ints)); |
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for (int i = 0; i < SIZE; ++i) |
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assertEquals(ints[i], q.poll()); |
118 |
} |
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finally {} |
120 |
} |
121 |
|
122 |
/** |
123 |
* The comparator used in constructor is used |
124 |
*/ |
125 |
public void testConstructor7() { |
126 |
try { |
127 |
MyReverseComparator cmp = new MyReverseComparator(); |
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PriorityBlockingQueue q = new PriorityBlockingQueue(SIZE, cmp); |
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assertEquals(cmp, q.comparator()); |
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Integer[] ints = new Integer[SIZE]; |
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for (int i = 0; i < SIZE; ++i) |
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ints[i] = new Integer(i); |
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q.addAll(Arrays.asList(ints)); |
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for (int i = SIZE-1; i >= 0; --i) |
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assertEquals(ints[i], q.poll()); |
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} |
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finally {} |
138 |
} |
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|
140 |
/** |
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* isEmpty is true before add, false after |
142 |
*/ |
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public void testEmpty() { |
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PriorityBlockingQueue q = new PriorityBlockingQueue(2); |
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assertTrue(q.isEmpty()); |
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assertEquals(NOCAP, q.remainingCapacity()); |
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q.add(one); |
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assertFalse(q.isEmpty()); |
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q.add(two); |
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q.remove(); |
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q.remove(); |
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assertTrue(q.isEmpty()); |
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} |
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|
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/** |
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* remainingCapacity does not change when elements added or removed, |
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* but size does |
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*/ |
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public void testRemainingCapacity() { |
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PriorityBlockingQueue q = populatedQueue(SIZE); |
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for (int i = 0; i < SIZE; ++i) { |
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assertEquals(NOCAP, q.remainingCapacity()); |
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assertEquals(SIZE-i, q.size()); |
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q.remove(); |
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} |
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for (int i = 0; i < SIZE; ++i) { |
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assertEquals(NOCAP, q.remainingCapacity()); |
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assertEquals(i, q.size()); |
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q.add(new Integer(i)); |
170 |
} |
171 |
} |
172 |
|
173 |
/** |
174 |
* offer(null) throws NPE |
175 |
*/ |
176 |
public void testOfferNull() { |
177 |
try { |
178 |
PriorityBlockingQueue q = new PriorityBlockingQueue(1); |
179 |
q.offer(null); |
180 |
shouldThrow(); |
181 |
} catch (NullPointerException success) { } |
182 |
} |
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|
184 |
/** |
185 |
* add(null) throws NPE |
186 |
*/ |
187 |
public void testAddNull() { |
188 |
try { |
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PriorityBlockingQueue q = new PriorityBlockingQueue(1); |
190 |
q.add(null); |
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shouldThrow(); |
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} catch (NullPointerException success) { } |
193 |
} |
194 |
|
195 |
/** |
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* Offer of comparable element succeeds |
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*/ |
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public void testOffer() { |
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PriorityBlockingQueue q = new PriorityBlockingQueue(1); |
200 |
assertTrue(q.offer(zero)); |
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assertTrue(q.offer(one)); |
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} |
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|
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/** |
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* Offer of non-Comparable throws CCE |
206 |
*/ |
207 |
public void testOfferNonComparable() { |
208 |
try { |
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PriorityBlockingQueue q = new PriorityBlockingQueue(1); |
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q.offer(new Object()); |
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q.offer(new Object()); |
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q.offer(new Object()); |
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shouldThrow(); |
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} |
215 |
catch(ClassCastException success) {} |
216 |
} |
217 |
|
218 |
/** |
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* add of comparable succeeds |
220 |
*/ |
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public void testAdd() { |
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PriorityBlockingQueue q = new PriorityBlockingQueue(SIZE); |
223 |
for (int i = 0; i < SIZE; ++i) { |
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assertEquals(i, q.size()); |
225 |
assertTrue(q.add(new Integer(i))); |
226 |
} |
227 |
} |
228 |
|
229 |
/** |
230 |
* addAll(null) throws NPE |
231 |
*/ |
232 |
public void testAddAll1() { |
233 |
try { |
234 |
PriorityBlockingQueue q = new PriorityBlockingQueue(1); |
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q.addAll(null); |
236 |
shouldThrow(); |
237 |
} |
238 |
catch (NullPointerException success) {} |
239 |
} |
240 |
|
241 |
/** |
242 |
* addAll(this) throws IAE |
243 |
*/ |
244 |
public void testAddAllSelf() { |
245 |
try { |
246 |
PriorityBlockingQueue q = populatedQueue(SIZE); |
247 |
q.addAll(q); |
248 |
shouldThrow(); |
249 |
} |
250 |
catch (IllegalArgumentException success) {} |
251 |
} |
252 |
|
253 |
/** |
254 |
* addAll of a collection with null elements throws NPE |
255 |
*/ |
256 |
public void testAddAll2() { |
257 |
try { |
258 |
PriorityBlockingQueue q = new PriorityBlockingQueue(SIZE); |
259 |
Integer[] ints = new Integer[SIZE]; |
260 |
q.addAll(Arrays.asList(ints)); |
261 |
shouldThrow(); |
262 |
} |
263 |
catch (NullPointerException success) {} |
264 |
} |
265 |
/** |
266 |
* addAll of a collection with any null elements throws NPE after |
267 |
* possibly adding some elements |
268 |
*/ |
269 |
public void testAddAll3() { |
270 |
try { |
271 |
PriorityBlockingQueue q = new PriorityBlockingQueue(SIZE); |
272 |
Integer[] ints = new Integer[SIZE]; |
273 |
for (int i = 0; i < SIZE-1; ++i) |
274 |
ints[i] = new Integer(i); |
275 |
q.addAll(Arrays.asList(ints)); |
276 |
shouldThrow(); |
277 |
} |
278 |
catch (NullPointerException success) {} |
279 |
} |
280 |
|
281 |
/** |
282 |
* Queue contains all elements of successful addAll |
283 |
*/ |
284 |
public void testAddAll5() { |
285 |
try { |
286 |
Integer[] empty = new Integer[0]; |
287 |
Integer[] ints = new Integer[SIZE]; |
288 |
for (int i = SIZE-1; i >= 0; --i) |
289 |
ints[i] = new Integer(i); |
290 |
PriorityBlockingQueue q = new PriorityBlockingQueue(SIZE); |
291 |
assertFalse(q.addAll(Arrays.asList(empty))); |
292 |
assertTrue(q.addAll(Arrays.asList(ints))); |
293 |
for (int i = 0; i < SIZE; ++i) |
294 |
assertEquals(ints[i], q.poll()); |
295 |
} |
296 |
finally {} |
297 |
} |
298 |
|
299 |
/** |
300 |
* put(null) throws NPE |
301 |
*/ |
302 |
public void testPutNull() { |
303 |
try { |
304 |
PriorityBlockingQueue q = new PriorityBlockingQueue(SIZE); |
305 |
q.put(null); |
306 |
shouldThrow(); |
307 |
} |
308 |
catch (NullPointerException success){ |
309 |
} |
310 |
} |
311 |
|
312 |
/** |
313 |
* all elements successfully put are contained |
314 |
*/ |
315 |
public void testPut() { |
316 |
try { |
317 |
PriorityBlockingQueue q = new PriorityBlockingQueue(SIZE); |
318 |
for (int i = 0; i < SIZE; ++i) { |
319 |
Integer I = new Integer(i); |
320 |
q.put(I); |
321 |
assertTrue(q.contains(I)); |
322 |
} |
323 |
assertEquals(SIZE, q.size()); |
324 |
} |
325 |
finally { |
326 |
} |
327 |
} |
328 |
|
329 |
/** |
330 |
* put doesn't block waiting for take |
331 |
*/ |
332 |
public void testPutWithTake() { |
333 |
final PriorityBlockingQueue q = new PriorityBlockingQueue(2); |
334 |
Thread t = new Thread(new Runnable() { |
335 |
public void run() { |
336 |
int added = 0; |
337 |
try { |
338 |
q.put(new Integer(0)); |
339 |
++added; |
340 |
q.put(new Integer(0)); |
341 |
++added; |
342 |
q.put(new Integer(0)); |
343 |
++added; |
344 |
q.put(new Integer(0)); |
345 |
++added; |
346 |
threadAssertTrue(added == 4); |
347 |
} finally { |
348 |
} |
349 |
} |
350 |
}); |
351 |
try { |
352 |
t.start(); |
353 |
Thread.sleep(SHORT_DELAY_MS); |
354 |
q.take(); |
355 |
t.interrupt(); |
356 |
t.join(); |
357 |
} catch (Exception e){ |
358 |
unexpectedException(); |
359 |
} |
360 |
} |
361 |
|
362 |
/** |
363 |
* timed offer does not time out |
364 |
*/ |
365 |
public void testTimedOffer() { |
366 |
final PriorityBlockingQueue q = new PriorityBlockingQueue(2); |
367 |
Thread t = new Thread(new Runnable() { |
368 |
public void run() { |
369 |
try { |
370 |
q.put(new Integer(0)); |
371 |
q.put(new Integer(0)); |
372 |
threadAssertTrue(q.offer(new Integer(0), SHORT_DELAY_MS, TimeUnit.MILLISECONDS)); |
373 |
threadAssertTrue(q.offer(new Integer(0), LONG_DELAY_MS, TimeUnit.MILLISECONDS)); |
374 |
} finally { } |
375 |
} |
376 |
}); |
377 |
|
378 |
try { |
379 |
t.start(); |
380 |
Thread.sleep(SMALL_DELAY_MS); |
381 |
t.interrupt(); |
382 |
t.join(); |
383 |
} catch (Exception e){ |
384 |
unexpectedException(); |
385 |
} |
386 |
} |
387 |
|
388 |
/** |
389 |
* take retrieves elements in priority order |
390 |
*/ |
391 |
public void testTake() { |
392 |
try { |
393 |
PriorityBlockingQueue q = populatedQueue(SIZE); |
394 |
for (int i = 0; i < SIZE; ++i) { |
395 |
assertEquals(i, ((Integer)q.take()).intValue()); |
396 |
} |
397 |
} catch (InterruptedException e){ |
398 |
unexpectedException(); |
399 |
} |
400 |
} |
401 |
|
402 |
/** |
403 |
* take blocks interruptibly when empty |
404 |
*/ |
405 |
public void testTakeFromEmpty() { |
406 |
final PriorityBlockingQueue q = new PriorityBlockingQueue(2); |
407 |
Thread t = new Thread(new Runnable() { |
408 |
public void run() { |
409 |
try { |
410 |
q.take(); |
411 |
threadShouldThrow(); |
412 |
} catch (InterruptedException success){ } |
413 |
} |
414 |
}); |
415 |
try { |
416 |
t.start(); |
417 |
Thread.sleep(SHORT_DELAY_MS); |
418 |
t.interrupt(); |
419 |
t.join(); |
420 |
} catch (Exception e){ |
421 |
unexpectedException(); |
422 |
} |
423 |
} |
424 |
|
425 |
/** |
426 |
* Take removes existing elements until empty, then blocks interruptibly |
427 |
*/ |
428 |
public void testBlockingTake() { |
429 |
Thread t = new Thread(new Runnable() { |
430 |
public void run() { |
431 |
try { |
432 |
PriorityBlockingQueue q = populatedQueue(SIZE); |
433 |
for (int i = 0; i < SIZE; ++i) { |
434 |
threadAssertEquals(i, ((Integer)q.take()).intValue()); |
435 |
} |
436 |
q.take(); |
437 |
threadShouldThrow(); |
438 |
} catch (InterruptedException success){ |
439 |
} |
440 |
}}); |
441 |
t.start(); |
442 |
try { |
443 |
Thread.sleep(SHORT_DELAY_MS); |
444 |
t.interrupt(); |
445 |
t.join(); |
446 |
} |
447 |
catch (InterruptedException ie) { |
448 |
unexpectedException(); |
449 |
} |
450 |
} |
451 |
|
452 |
|
453 |
/** |
454 |
* poll succeeds unless empty |
455 |
*/ |
456 |
public void testPoll() { |
457 |
PriorityBlockingQueue q = populatedQueue(SIZE); |
458 |
for (int i = 0; i < SIZE; ++i) { |
459 |
assertEquals(i, ((Integer)q.poll()).intValue()); |
460 |
} |
461 |
assertNull(q.poll()); |
462 |
} |
463 |
|
464 |
/** |
465 |
* timed pool with zero timeout succeeds when non-empty, else times out |
466 |
*/ |
467 |
public void testTimedPoll0() { |
468 |
try { |
469 |
PriorityBlockingQueue q = populatedQueue(SIZE); |
470 |
for (int i = 0; i < SIZE; ++i) { |
471 |
assertEquals(i, ((Integer)q.poll(0, TimeUnit.MILLISECONDS)).intValue()); |
472 |
} |
473 |
assertNull(q.poll(0, TimeUnit.MILLISECONDS)); |
474 |
} catch (InterruptedException e){ |
475 |
unexpectedException(); |
476 |
} |
477 |
} |
478 |
|
479 |
/** |
480 |
* timed pool with nonzero timeout succeeds when non-empty, else times out |
481 |
*/ |
482 |
public void testTimedPoll() { |
483 |
try { |
484 |
PriorityBlockingQueue q = populatedQueue(SIZE); |
485 |
for (int i = 0; i < SIZE; ++i) { |
486 |
assertEquals(i, ((Integer)q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS)).intValue()); |
487 |
} |
488 |
assertNull(q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS)); |
489 |
} catch (InterruptedException e){ |
490 |
unexpectedException(); |
491 |
} |
492 |
} |
493 |
|
494 |
/** |
495 |
* Interrupted timed poll throws InterruptedException instead of |
496 |
* returning timeout status |
497 |
*/ |
498 |
public void testInterruptedTimedPoll() { |
499 |
Thread t = new Thread(new Runnable() { |
500 |
public void run() { |
501 |
try { |
502 |
PriorityBlockingQueue q = populatedQueue(SIZE); |
503 |
for (int i = 0; i < SIZE; ++i) { |
504 |
threadAssertEquals(i, ((Integer)q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS)).intValue()); |
505 |
} |
506 |
threadAssertNull(q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS)); |
507 |
} catch (InterruptedException success){ |
508 |
} |
509 |
}}); |
510 |
t.start(); |
511 |
try { |
512 |
Thread.sleep(SHORT_DELAY_MS); |
513 |
t.interrupt(); |
514 |
t.join(); |
515 |
} |
516 |
catch (InterruptedException ie) { |
517 |
unexpectedException(); |
518 |
} |
519 |
} |
520 |
|
521 |
/** |
522 |
* timed poll before a delayed offer fails; after offer succeeds; |
523 |
* on interruption throws |
524 |
*/ |
525 |
public void testTimedPollWithOffer() { |
526 |
final PriorityBlockingQueue q = new PriorityBlockingQueue(2); |
527 |
Thread t = new Thread(new Runnable() { |
528 |
public void run() { |
529 |
try { |
530 |
threadAssertNull(q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS)); |
531 |
q.poll(LONG_DELAY_MS, TimeUnit.MILLISECONDS); |
532 |
q.poll(LONG_DELAY_MS, TimeUnit.MILLISECONDS); |
533 |
threadShouldThrow(); |
534 |
} catch (InterruptedException success) { } |
535 |
} |
536 |
}); |
537 |
try { |
538 |
t.start(); |
539 |
Thread.sleep(SMALL_DELAY_MS); |
540 |
assertTrue(q.offer(new Integer(0), SHORT_DELAY_MS, TimeUnit.MILLISECONDS)); |
541 |
t.interrupt(); |
542 |
t.join(); |
543 |
} catch (Exception e){ |
544 |
unexpectedException(); |
545 |
} |
546 |
} |
547 |
|
548 |
|
549 |
/** |
550 |
* peek returns next element, or null if empty |
551 |
*/ |
552 |
public void testPeek() { |
553 |
PriorityBlockingQueue q = populatedQueue(SIZE); |
554 |
for (int i = 0; i < SIZE; ++i) { |
555 |
assertEquals(i, ((Integer)q.peek()).intValue()); |
556 |
q.poll(); |
557 |
assertTrue(q.peek() == null || |
558 |
i != ((Integer)q.peek()).intValue()); |
559 |
} |
560 |
assertNull(q.peek()); |
561 |
} |
562 |
|
563 |
/** |
564 |
* element returns next element, or throws NSEE if empty |
565 |
*/ |
566 |
public void testElement() { |
567 |
PriorityBlockingQueue q = populatedQueue(SIZE); |
568 |
for (int i = 0; i < SIZE; ++i) { |
569 |
assertEquals(i, ((Integer)q.element()).intValue()); |
570 |
q.poll(); |
571 |
} |
572 |
try { |
573 |
q.element(); |
574 |
shouldThrow(); |
575 |
} |
576 |
catch (NoSuchElementException success) {} |
577 |
} |
578 |
|
579 |
/** |
580 |
* remove removes next element, or throws NSEE if empty |
581 |
*/ |
582 |
public void testRemove() { |
583 |
PriorityBlockingQueue q = populatedQueue(SIZE); |
584 |
for (int i = 0; i < SIZE; ++i) { |
585 |
assertEquals(i, ((Integer)q.remove()).intValue()); |
586 |
} |
587 |
try { |
588 |
q.remove(); |
589 |
shouldThrow(); |
590 |
} catch (NoSuchElementException success){ |
591 |
} |
592 |
} |
593 |
|
594 |
/** |
595 |
* remove(x) removes x and returns true if present |
596 |
*/ |
597 |
public void testRemoveElement() { |
598 |
PriorityBlockingQueue q = populatedQueue(SIZE); |
599 |
for (int i = 1; i < SIZE; i+=2) { |
600 |
assertTrue(q.remove(new Integer(i))); |
601 |
} |
602 |
for (int i = 0; i < SIZE; i+=2) { |
603 |
assertTrue(q.remove(new Integer(i))); |
604 |
assertFalse(q.remove(new Integer(i+1))); |
605 |
} |
606 |
assertTrue(q.isEmpty()); |
607 |
} |
608 |
|
609 |
/** |
610 |
* contains(x) reports true when elements added but not yet removed |
611 |
*/ |
612 |
public void testContains() { |
613 |
PriorityBlockingQueue q = populatedQueue(SIZE); |
614 |
for (int i = 0; i < SIZE; ++i) { |
615 |
assertTrue(q.contains(new Integer(i))); |
616 |
q.poll(); |
617 |
assertFalse(q.contains(new Integer(i))); |
618 |
} |
619 |
} |
620 |
|
621 |
/** |
622 |
* clear removes all elements |
623 |
*/ |
624 |
public void testClear() { |
625 |
PriorityBlockingQueue q = populatedQueue(SIZE); |
626 |
q.clear(); |
627 |
assertTrue(q.isEmpty()); |
628 |
assertEquals(0, q.size()); |
629 |
assertEquals(NOCAP, q.remainingCapacity()); |
630 |
q.add(new Integer(1)); |
631 |
assertFalse(q.isEmpty()); |
632 |
q.clear(); |
633 |
assertTrue(q.isEmpty()); |
634 |
} |
635 |
|
636 |
/** |
637 |
* containsAll(c) is true when c contains a subset of elements |
638 |
*/ |
639 |
public void testContainsAll() { |
640 |
PriorityBlockingQueue q = populatedQueue(SIZE); |
641 |
PriorityBlockingQueue p = new PriorityBlockingQueue(SIZE); |
642 |
for (int i = 0; i < SIZE; ++i) { |
643 |
assertTrue(q.containsAll(p)); |
644 |
assertFalse(p.containsAll(q)); |
645 |
p.add(new Integer(i)); |
646 |
} |
647 |
assertTrue(p.containsAll(q)); |
648 |
} |
649 |
|
650 |
/** |
651 |
* retainAll(c) retains only those elements of c and reports true if changed |
652 |
*/ |
653 |
public void testRetainAll() { |
654 |
PriorityBlockingQueue q = populatedQueue(SIZE); |
655 |
PriorityBlockingQueue p = populatedQueue(SIZE); |
656 |
for (int i = 0; i < SIZE; ++i) { |
657 |
boolean changed = q.retainAll(p); |
658 |
if (i == 0) |
659 |
assertFalse(changed); |
660 |
else |
661 |
assertTrue(changed); |
662 |
|
663 |
assertTrue(q.containsAll(p)); |
664 |
assertEquals(SIZE-i, q.size()); |
665 |
p.remove(); |
666 |
} |
667 |
} |
668 |
|
669 |
/** |
670 |
* removeAll(c) removes only those elements of c and reports true if changed |
671 |
*/ |
672 |
public void testRemoveAll() { |
673 |
for (int i = 1; i < SIZE; ++i) { |
674 |
PriorityBlockingQueue q = populatedQueue(SIZE); |
675 |
PriorityBlockingQueue p = populatedQueue(i); |
676 |
assertTrue(q.removeAll(p)); |
677 |
assertEquals(SIZE-i, q.size()); |
678 |
for (int j = 0; j < i; ++j) { |
679 |
Integer I = (Integer)(p.remove()); |
680 |
assertFalse(q.contains(I)); |
681 |
} |
682 |
} |
683 |
} |
684 |
|
685 |
/** |
686 |
* toArray contains all elements |
687 |
*/ |
688 |
public void testToArray() { |
689 |
PriorityBlockingQueue q = populatedQueue(SIZE); |
690 |
Object[] o = q.toArray(); |
691 |
Arrays.sort(o); |
692 |
try { |
693 |
for(int i = 0; i < o.length; i++) |
694 |
assertEquals(o[i], q.take()); |
695 |
} catch (InterruptedException e){ |
696 |
unexpectedException(); |
697 |
} |
698 |
} |
699 |
|
700 |
/** |
701 |
* toArray(a) contains all elements |
702 |
*/ |
703 |
public void testToArray2() { |
704 |
PriorityBlockingQueue q = populatedQueue(SIZE); |
705 |
Integer[] ints = new Integer[SIZE]; |
706 |
ints = (Integer[])q.toArray(ints); |
707 |
Arrays.sort(ints); |
708 |
try { |
709 |
for(int i = 0; i < ints.length; i++) |
710 |
assertEquals(ints[i], q.take()); |
711 |
} catch (InterruptedException e){ |
712 |
unexpectedException(); |
713 |
} |
714 |
} |
715 |
|
716 |
/** |
717 |
* toArray(null) throws NPE |
718 |
*/ |
719 |
public void testToArray_BadArg() { |
720 |
try { |
721 |
PriorityBlockingQueue q = populatedQueue(SIZE); |
722 |
Object o[] = q.toArray(null); |
723 |
shouldThrow(); |
724 |
} catch(NullPointerException success){} |
725 |
} |
726 |
|
727 |
/** |
728 |
* toArray with incompatible array type throws CCE |
729 |
*/ |
730 |
public void testToArray1_BadArg() { |
731 |
try { |
732 |
PriorityBlockingQueue q = populatedQueue(SIZE); |
733 |
Object o[] = q.toArray(new String[10] ); |
734 |
shouldThrow(); |
735 |
} catch(ArrayStoreException success){} |
736 |
} |
737 |
|
738 |
/** |
739 |
* iterator iterates through all elements |
740 |
*/ |
741 |
public void testIterator() { |
742 |
PriorityBlockingQueue q = populatedQueue(SIZE); |
743 |
int i = 0; |
744 |
Iterator it = q.iterator(); |
745 |
while(it.hasNext()) { |
746 |
assertTrue(q.contains(it.next())); |
747 |
++i; |
748 |
} |
749 |
assertEquals(i, SIZE); |
750 |
} |
751 |
|
752 |
/** |
753 |
* iterator.remove removes current element |
754 |
*/ |
755 |
public void testIteratorRemove () { |
756 |
final PriorityBlockingQueue q = new PriorityBlockingQueue(3); |
757 |
q.add(new Integer(2)); |
758 |
q.add(new Integer(1)); |
759 |
q.add(new Integer(3)); |
760 |
|
761 |
Iterator it = q.iterator(); |
762 |
it.next(); |
763 |
it.remove(); |
764 |
|
765 |
it = q.iterator(); |
766 |
assertEquals(it.next(), new Integer(2)); |
767 |
assertEquals(it.next(), new Integer(3)); |
768 |
assertFalse(it.hasNext()); |
769 |
} |
770 |
|
771 |
|
772 |
/** |
773 |
* toString contains toStrings of elements |
774 |
*/ |
775 |
public void testToString() { |
776 |
PriorityBlockingQueue q = populatedQueue(SIZE); |
777 |
String s = q.toString(); |
778 |
for (int i = 0; i < SIZE; ++i) { |
779 |
assertTrue(s.indexOf(String.valueOf(i)) >= 0); |
780 |
} |
781 |
} |
782 |
|
783 |
/** |
784 |
* offer transfers elements across Executor tasks |
785 |
*/ |
786 |
public void testPollInExecutor() { |
787 |
final PriorityBlockingQueue q = new PriorityBlockingQueue(2); |
788 |
ExecutorService executor = Executors.newFixedThreadPool(2); |
789 |
executor.execute(new Runnable() { |
790 |
public void run() { |
791 |
threadAssertNull(q.poll()); |
792 |
try { |
793 |
threadAssertTrue(null != q.poll(MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS)); |
794 |
threadAssertTrue(q.isEmpty()); |
795 |
} |
796 |
catch (InterruptedException e) { |
797 |
threadUnexpectedException(); |
798 |
} |
799 |
} |
800 |
}); |
801 |
|
802 |
executor.execute(new Runnable() { |
803 |
public void run() { |
804 |
try { |
805 |
Thread.sleep(SMALL_DELAY_MS); |
806 |
q.put(new Integer(1)); |
807 |
} |
808 |
catch (InterruptedException e) { |
809 |
threadUnexpectedException(); |
810 |
} |
811 |
} |
812 |
}); |
813 |
|
814 |
joinPool(executor); |
815 |
} |
816 |
|
817 |
/** |
818 |
* A deserialized serialized queue has same elements |
819 |
*/ |
820 |
public void testSerialization() { |
821 |
PriorityBlockingQueue q = populatedQueue(SIZE); |
822 |
try { |
823 |
ByteArrayOutputStream bout = new ByteArrayOutputStream(10000); |
824 |
ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout)); |
825 |
out.writeObject(q); |
826 |
out.close(); |
827 |
|
828 |
ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray()); |
829 |
ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin)); |
830 |
PriorityBlockingQueue r = (PriorityBlockingQueue)in.readObject(); |
831 |
assertEquals(q.size(), r.size()); |
832 |
while (!q.isEmpty()) |
833 |
assertEquals(q.remove(), r.remove()); |
834 |
} catch(Exception e){ |
835 |
unexpectedException(); |
836 |
} |
837 |
} |
838 |
|
839 |
/** |
840 |
* drainTo(null) throws NPE |
841 |
*/ |
842 |
public void testDrainToNull() { |
843 |
PriorityBlockingQueue q = populatedQueue(SIZE); |
844 |
try { |
845 |
q.drainTo(null); |
846 |
shouldThrow(); |
847 |
} catch(NullPointerException success) { |
848 |
} |
849 |
} |
850 |
|
851 |
/** |
852 |
* drainTo(this) throws IAE |
853 |
*/ |
854 |
public void testDrainToSelf() { |
855 |
PriorityBlockingQueue q = populatedQueue(SIZE); |
856 |
try { |
857 |
q.drainTo(q); |
858 |
shouldThrow(); |
859 |
} catch(IllegalArgumentException success) { |
860 |
} |
861 |
} |
862 |
|
863 |
/** |
864 |
* drainTo(c) empties queue into another collection c |
865 |
*/ |
866 |
public void testDrainTo() { |
867 |
PriorityBlockingQueue q = populatedQueue(SIZE); |
868 |
ArrayList l = new ArrayList(); |
869 |
q.drainTo(l); |
870 |
assertEquals(q.size(), 0); |
871 |
assertEquals(l.size(), SIZE); |
872 |
for (int i = 0; i < SIZE; ++i) |
873 |
assertEquals(l.get(i), new Integer(i)); |
874 |
} |
875 |
|
876 |
/** |
877 |
* drainTo empties queue |
878 |
*/ |
879 |
public void testDrainToWithActivePut() { |
880 |
final PriorityBlockingQueue q = populatedQueue(SIZE); |
881 |
Thread t = new Thread(new Runnable() { |
882 |
public void run() { |
883 |
q.put(new Integer(SIZE+1)); |
884 |
} |
885 |
}); |
886 |
try { |
887 |
t.start(); |
888 |
ArrayList l = new ArrayList(); |
889 |
q.drainTo(l); |
890 |
assertTrue(l.size() >= SIZE); |
891 |
for (int i = 0; i < SIZE; ++i) |
892 |
assertEquals(l.get(i), new Integer(i)); |
893 |
t.join(); |
894 |
assertTrue(q.size() + l.size() >= SIZE); |
895 |
} catch(Exception e){ |
896 |
unexpectedException(); |
897 |
} |
898 |
} |
899 |
|
900 |
/** |
901 |
* drainTo(null, n) throws NPE |
902 |
*/ |
903 |
public void testDrainToNullN() { |
904 |
PriorityBlockingQueue q = populatedQueue(SIZE); |
905 |
try { |
906 |
q.drainTo(null, 0); |
907 |
shouldThrow(); |
908 |
} catch(NullPointerException success) { |
909 |
} |
910 |
} |
911 |
|
912 |
/** |
913 |
* drainTo(this, n) throws IAE |
914 |
*/ |
915 |
public void testDrainToSelfN() { |
916 |
PriorityBlockingQueue q = populatedQueue(SIZE); |
917 |
try { |
918 |
q.drainTo(q, 0); |
919 |
shouldThrow(); |
920 |
} catch(IllegalArgumentException success) { |
921 |
} |
922 |
} |
923 |
|
924 |
/** |
925 |
* drainTo(c, n) empties first max {n, size} elements of queue into c |
926 |
*/ |
927 |
public void testDrainToN() { |
928 |
for (int i = 0; i < SIZE + 2; ++i) { |
929 |
PriorityBlockingQueue q = populatedQueue(SIZE); |
930 |
ArrayList l = new ArrayList(); |
931 |
q.drainTo(l, i); |
932 |
int k = (i < SIZE)? i : SIZE; |
933 |
assertEquals(q.size(), SIZE-k); |
934 |
assertEquals(l.size(), k); |
935 |
for (int j = 0; j < k; ++j) |
936 |
assertTrue(l.contains(new Integer(j))); |
937 |
} |
938 |
} |
939 |
|
940 |
|
941 |
} |