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Comparing jsr166/src/test/tck/PriorityBlockingQueueTest.java (file contents):
Revision 1.80 by jsr166, Sun May 6 22:29:24 2018 UTC vs.
Revision 1.87 by jsr166, Wed Jan 27 02:55:18 2021 UTC

# Line 50 | Line 50 | public class PriorityBlockingQueueTest e
50              public Collection emptyCollection() {
51                  return new PriorityBlockingQueue();
52              }
53 <            public Object makeElement(int i) { return i; }
53 >            public Object makeElement(int i) { return JSR166TestCase.itemFor(i); }
54              public boolean isConcurrent() { return true; }
55              public boolean permitsNulls() { return false; }
56          }
57          class ComparatorImplementation implements CollectionImplementation {
58              public Class<?> klazz() { return PriorityBlockingQueue.class; }
59 +            @SuppressWarnings("unchecked")
60              public Collection emptyCollection() {
61                  ThreadLocalRandom rnd = ThreadLocalRandom.current();
62                  int initialCapacity = rnd.nextInt(1, 10);
63                  return new PriorityBlockingQueue(
64                      initialCapacity, new MyReverseComparator());
65              }
66 <            public Object makeElement(int i) { return i; }
66 >            public Object makeElement(int i) { return JSR166TestCase.itemFor(i); }
67              public boolean isConcurrent() { return true; }
68              public boolean permitsNulls() { return false; }
69          }
# Line 76 | Line 77 | public class PriorityBlockingQueueTest e
77  
78      /** Sample Comparator */
79      static class MyReverseComparator implements Comparator, java.io.Serializable {
80 +        @SuppressWarnings("unchecked")
81          public int compare(Object x, Object y) {
82              return ((Comparable)y).compareTo(x);
83          }
# Line 83 | Line 85 | public class PriorityBlockingQueueTest e
85  
86      /**
87       * Returns a new queue of given size containing consecutive
88 <     * Integers 0 ... n - 1.
88 >     * Items 0 ... n - 1.
89       */
90 <    private static PriorityBlockingQueue<Integer> populatedQueue(int n) {
91 <        PriorityBlockingQueue<Integer> q =
90 <            new PriorityBlockingQueue<Integer>(n);
90 >    private static PriorityBlockingQueue<Item> populatedQueue(int n) {
91 >        PriorityBlockingQueue<Item> q = new PriorityBlockingQueue<>(n);
92          assertTrue(q.isEmpty());
93          for (int i = n - 1; i >= 0; i -= 2)
94 <            assertTrue(q.offer(new Integer(i)));
94 >            mustOffer(q, i);
95          for (int i = (n & 1); i < n; i += 2)
96 <            assertTrue(q.offer(new Integer(i)));
96 >            mustOffer(q, i);
97          assertFalse(q.isEmpty());
98 <        assertEquals(Integer.MAX_VALUE, q.remainingCapacity());
99 <        assertEquals(n, q.size());
100 <        assertEquals((Integer) 0, q.peek());
98 >        mustEqual(Integer.MAX_VALUE, q.remainingCapacity());
99 >        mustEqual(n, q.size());
100 >        mustEqual(0, q.peek());
101          return q;
102      }
103  
# Line 104 | Line 105 | public class PriorityBlockingQueueTest e
105       * A new queue has unbounded capacity
106       */
107      public void testConstructor1() {
108 <        assertEquals(Integer.MAX_VALUE,
109 <                     new PriorityBlockingQueue(SIZE).remainingCapacity());
108 >        mustEqual(Integer.MAX_VALUE,
109 >                     new PriorityBlockingQueue<Item>(SIZE).remainingCapacity());
110      }
111  
112      /**
# Line 113 | Line 114 | public class PriorityBlockingQueueTest e
114       */
115      public void testConstructor2() {
116          try {
117 <            new PriorityBlockingQueue(0);
117 >            new PriorityBlockingQueue<Item>(0);
118              shouldThrow();
119          } catch (IllegalArgumentException success) {}
120      }
# Line 123 | Line 124 | public class PriorityBlockingQueueTest e
124       */
125      public void testConstructor3() {
126          try {
127 <            new PriorityBlockingQueue(null);
127 >            new PriorityBlockingQueue<Item>(null);
128              shouldThrow();
129          } catch (NullPointerException success) {}
130      }
# Line 132 | Line 133 | public class PriorityBlockingQueueTest e
133       * Initializing from Collection of null elements throws NPE
134       */
135      public void testConstructor4() {
136 <        Collection<Integer> elements = Arrays.asList(new Integer[SIZE]);
136 >        Collection<Item> elements = Arrays.asList(new Item[SIZE]);
137          try {
138 <            new PriorityBlockingQueue(elements);
138 >            new PriorityBlockingQueue<Item>(elements);
139              shouldThrow();
140          } catch (NullPointerException success) {}
141      }
# Line 143 | Line 144 | public class PriorityBlockingQueueTest e
144       * Initializing from Collection with some null elements throws NPE
145       */
146      public void testConstructor5() {
147 <        Integer[] ints = new Integer[SIZE];
148 <        for (int i = 0; i < SIZE - 1; ++i)
148 <            ints[i] = i;
149 <        Collection<Integer> elements = Arrays.asList(ints);
147 >        Item[] items = new Item[2]; items[0] = zero;
148 >        Collection<Item> elements = Arrays.asList(items);
149          try {
150 <            new PriorityBlockingQueue(elements);
150 >            new PriorityBlockingQueue<Item>(elements);
151              shouldThrow();
152          } catch (NullPointerException success) {}
153      }
# Line 157 | Line 156 | public class PriorityBlockingQueueTest e
156       * Queue contains all elements of collection used to initialize
157       */
158      public void testConstructor6() {
159 <        Integer[] ints = new Integer[SIZE];
159 >        Item[] items = defaultItems;
160 >        PriorityBlockingQueue<Item> q = new PriorityBlockingQueue<>(Arrays.asList(items));
161          for (int i = 0; i < SIZE; ++i)
162 <            ints[i] = i;
163 <        PriorityBlockingQueue q = new PriorityBlockingQueue(Arrays.asList(ints));
164 <        for (int i = 0; i < SIZE; ++i)
165 <            assertEquals(ints[i], q.poll());
162 >            mustEqual(items[i], q.poll());
163      }
164  
165      /**
# Line 170 | Line 167 | public class PriorityBlockingQueueTest e
167       */
168      public void testConstructor7() {
169          MyReverseComparator cmp = new MyReverseComparator();
170 <        PriorityBlockingQueue q = new PriorityBlockingQueue(SIZE, cmp);
171 <        assertEquals(cmp, q.comparator());
172 <        Integer[] ints = new Integer[SIZE];
173 <        for (int i = 0; i < SIZE; ++i)
174 <            ints[i] = new Integer(i);
178 <        q.addAll(Arrays.asList(ints));
170 >        @SuppressWarnings("unchecked")
171 >        PriorityBlockingQueue<Item> q = new PriorityBlockingQueue<>(SIZE, cmp);
172 >        mustEqual(cmp, q.comparator());
173 >        Item[] items = defaultItems;
174 >        q.addAll(Arrays.asList(items));
175          for (int i = SIZE - 1; i >= 0; --i)
176 <            assertEquals(ints[i], q.poll());
176 >            mustEqual(items[i], q.poll());
177      }
178  
179      /**
180       * isEmpty is true before add, false after
181       */
182      public void testEmpty() {
183 <        PriorityBlockingQueue q = new PriorityBlockingQueue(2);
183 >        PriorityBlockingQueue<Item> q = new PriorityBlockingQueue<>(2);
184          assertTrue(q.isEmpty());
185 <        assertEquals(Integer.MAX_VALUE, q.remainingCapacity());
185 >        mustEqual(Integer.MAX_VALUE, q.remainingCapacity());
186          q.add(one);
187          assertFalse(q.isEmpty());
188          q.add(two);
# Line 199 | Line 195 | public class PriorityBlockingQueueTest e
195       * remainingCapacity() always returns Integer.MAX_VALUE
196       */
197      public void testRemainingCapacity() {
198 <        BlockingQueue q = populatedQueue(SIZE);
198 >        BlockingQueue<Item> q = populatedQueue(SIZE);
199          for (int i = 0; i < SIZE; ++i) {
200 <            assertEquals(Integer.MAX_VALUE, q.remainingCapacity());
201 <            assertEquals(SIZE - i, q.size());
202 <            assertEquals(i, q.remove());
200 >            mustEqual(Integer.MAX_VALUE, q.remainingCapacity());
201 >            mustEqual(SIZE - i, q.size());
202 >            mustEqual(i, q.remove());
203          }
204          for (int i = 0; i < SIZE; ++i) {
205 <            assertEquals(Integer.MAX_VALUE, q.remainingCapacity());
206 <            assertEquals(i, q.size());
207 <            assertTrue(q.add(i));
205 >            mustEqual(Integer.MAX_VALUE, q.remainingCapacity());
206 >            mustEqual(i, q.size());
207 >            mustAdd(q, i);
208          }
209      }
210  
# Line 216 | Line 212 | public class PriorityBlockingQueueTest e
212       * Offer of comparable element succeeds
213       */
214      public void testOffer() {
215 <        PriorityBlockingQueue q = new PriorityBlockingQueue(1);
215 >        PriorityBlockingQueue<Item> q = new PriorityBlockingQueue<>(1);
216          assertTrue(q.offer(zero));
217          assertTrue(q.offer(one));
218      }
# Line 225 | Line 221 | public class PriorityBlockingQueueTest e
221       * Offer of non-Comparable throws CCE
222       */
223      public void testOfferNonComparable() {
224 <        PriorityBlockingQueue q = new PriorityBlockingQueue(1);
224 >        PriorityBlockingQueue<Object> q = new PriorityBlockingQueue<>(1);
225          try {
226              q.offer(new Object());
227              shouldThrow();
228          } catch (ClassCastException success) {
229              assertTrue(q.isEmpty());
230 <            assertEquals(0, q.size());
230 >            mustEqual(0, q.size());
231              assertNull(q.poll());
232          }
233      }
# Line 240 | Line 236 | public class PriorityBlockingQueueTest e
236       * add of comparable succeeds
237       */
238      public void testAdd() {
239 <        PriorityBlockingQueue q = new PriorityBlockingQueue(SIZE);
239 >        PriorityBlockingQueue<Item> q = new PriorityBlockingQueue<>(SIZE);
240          for (int i = 0; i < SIZE; ++i) {
241 <            assertEquals(i, q.size());
242 <            assertTrue(q.add(new Integer(i)));
241 >            mustEqual(i, q.size());
242 >            mustAdd(q, i);
243          }
244      }
245  
# Line 251 | Line 247 | public class PriorityBlockingQueueTest e
247       * addAll(this) throws IllegalArgumentException
248       */
249      public void testAddAllSelf() {
250 <        PriorityBlockingQueue q = populatedQueue(SIZE);
250 >        PriorityBlockingQueue<Item> q = populatedQueue(SIZE);
251          try {
252              q.addAll(q);
253              shouldThrow();
# Line 263 | Line 259 | public class PriorityBlockingQueueTest e
259       * possibly adding some elements
260       */
261      public void testAddAll3() {
262 <        PriorityBlockingQueue q = new PriorityBlockingQueue(SIZE);
263 <        Integer[] ints = new Integer[SIZE];
264 <        for (int i = 0; i < SIZE - 1; ++i)
269 <            ints[i] = new Integer(i);
262 >        PriorityBlockingQueue<Item> q = new PriorityBlockingQueue<>(SIZE);
263 >        Item[] items = new Item[2];
264 >        items[0] = zero;
265          try {
266 <            q.addAll(Arrays.asList(ints));
266 >            q.addAll(Arrays.asList(items));
267              shouldThrow();
268          } catch (NullPointerException success) {}
269      }
# Line 277 | Line 272 | public class PriorityBlockingQueueTest e
272       * Queue contains all elements of successful addAll
273       */
274      public void testAddAll5() {
275 <        Integer[] empty = new Integer[0];
276 <        Integer[] ints = new Integer[SIZE];
277 <        for (int i = SIZE - 1; i >= 0; --i)
283 <            ints[i] = new Integer(i);
284 <        PriorityBlockingQueue q = new PriorityBlockingQueue(SIZE);
275 >        Item[] empty = new Item[0];
276 >        Item[] items = defaultItems;
277 >        PriorityBlockingQueue<Item> q = new PriorityBlockingQueue<>(SIZE);
278          assertFalse(q.addAll(Arrays.asList(empty)));
279 <        assertTrue(q.addAll(Arrays.asList(ints)));
279 >        assertTrue(q.addAll(Arrays.asList(items)));
280          for (int i = 0; i < SIZE; ++i)
281 <            assertEquals(ints[i], q.poll());
281 >            mustEqual(items[i], q.poll());
282      }
283  
284      /**
285       * all elements successfully put are contained
286       */
287      public void testPut() {
288 <        PriorityBlockingQueue q = new PriorityBlockingQueue(SIZE);
288 >        PriorityBlockingQueue<Item> q = new PriorityBlockingQueue<>(SIZE);
289          for (int i = 0; i < SIZE; ++i) {
290 <            Integer x = new Integer(i);
290 >            Item x = itemFor(i);
291              q.put(x);
292 <            assertTrue(q.contains(x));
292 >            mustContain(q, x);
293          }
294 <        assertEquals(SIZE, q.size());
294 >        mustEqual(SIZE, q.size());
295      }
296  
297      /**
298       * put doesn't block waiting for take
299       */
300      public void testPutWithTake() throws InterruptedException {
301 <        final PriorityBlockingQueue q = new PriorityBlockingQueue(2);
301 >        final PriorityBlockingQueue<Item> q = new PriorityBlockingQueue<>(2);
302          final int size = 4;
303          Thread t = newStartedThread(new CheckedRunnable() {
304              public void realRun() {
305                  for (int i = 0; i < size; i++)
306 <                    q.put(new Integer(0));
306 >                    q.put(zero);
307              }});
308  
309          awaitTermination(t);
310 <        assertEquals(size, q.size());
310 >        mustEqual(size, q.size());
311          q.take();
312      }
313  
314      /**
315 <     * timed offer does not time out
315 >     * Queue is unbounded, so timed offer never times out
316       */
317      public void testTimedOffer() {
318 <        final PriorityBlockingQueue q = new PriorityBlockingQueue(2);
318 >        final PriorityBlockingQueue<Item> q = new PriorityBlockingQueue<>(2);
319          Thread t = newStartedThread(new CheckedRunnable() {
320              public void realRun() {
321 <                q.put(new Integer(0));
322 <                q.put(new Integer(0));
323 <                assertTrue(q.offer(new Integer(0), SHORT_DELAY_MS, MILLISECONDS));
324 <                assertTrue(q.offer(new Integer(0), LONG_DELAY_MS, MILLISECONDS));
321 >                q.put(one);
322 >                q.put(two);
323 >                assertTrue(q.offer(zero, SHORT_DELAY_MS, MILLISECONDS));
324 >                assertTrue(q.offer(zero, LONG_DELAY_MS, MILLISECONDS));
325              }});
326  
327          awaitTermination(t);
# Line 338 | Line 331 | public class PriorityBlockingQueueTest e
331       * take retrieves elements in priority order
332       */
333      public void testTake() throws InterruptedException {
334 <        PriorityBlockingQueue q = populatedQueue(SIZE);
334 >        PriorityBlockingQueue<Item> q = populatedQueue(SIZE);
335          for (int i = 0; i < SIZE; ++i) {
336 <            assertEquals(i, q.take());
336 >            mustEqual(i, q.take());
337          }
338      }
339  
# Line 348 | Line 341 | public class PriorityBlockingQueueTest e
341       * Take removes existing elements until empty, then blocks interruptibly
342       */
343      public void testBlockingTake() throws InterruptedException {
344 <        final PriorityBlockingQueue q = populatedQueue(SIZE);
344 >        final PriorityBlockingQueue<Item> q = populatedQueue(SIZE);
345          final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
346          Thread t = newStartedThread(new CheckedRunnable() {
347              public void realRun() throws InterruptedException {
348 <                for (int i = 0; i < SIZE; i++) assertEquals(i, q.take());
348 >                for (int i = 0; i < SIZE; i++) mustEqual(i, q.take());
349  
350                  Thread.currentThread().interrupt();
351                  try {
# Line 370 | Line 363 | public class PriorityBlockingQueueTest e
363              }});
364  
365          await(pleaseInterrupt);
366 <        assertThreadBlocks(t, Thread.State.WAITING);
366 >        if (randomBoolean()) assertThreadBlocks(t, Thread.State.WAITING);
367          t.interrupt();
368          awaitTermination(t);
369      }
# Line 379 | Line 372 | public class PriorityBlockingQueueTest e
372       * poll succeeds unless empty
373       */
374      public void testPoll() {
375 <        PriorityBlockingQueue q = populatedQueue(SIZE);
375 >        PriorityBlockingQueue<Item> q = populatedQueue(SIZE);
376          for (int i = 0; i < SIZE; ++i) {
377 <            assertEquals(i, q.poll());
377 >            mustEqual(i, q.poll());
378          }
379          assertNull(q.poll());
380      }
# Line 390 | Line 383 | public class PriorityBlockingQueueTest e
383       * timed poll with zero timeout succeeds when non-empty, else times out
384       */
385      public void testTimedPoll0() throws InterruptedException {
386 <        PriorityBlockingQueue q = populatedQueue(SIZE);
386 >        PriorityBlockingQueue<Item> q = populatedQueue(SIZE);
387          for (int i = 0; i < SIZE; ++i) {
388 <            assertEquals(i, q.poll(0, MILLISECONDS));
388 >            mustEqual(i, q.poll(0, MILLISECONDS));
389          }
390          assertNull(q.poll(0, MILLISECONDS));
391      }
# Line 401 | Line 394 | public class PriorityBlockingQueueTest e
394       * timed poll with nonzero timeout succeeds when non-empty, else times out
395       */
396      public void testTimedPoll() throws InterruptedException {
397 <        PriorityBlockingQueue<Integer> q = populatedQueue(SIZE);
397 >        PriorityBlockingQueue<Item> q = populatedQueue(SIZE);
398          for (int i = 0; i < SIZE; ++i) {
399              long startTime = System.nanoTime();
400 <            assertEquals(i, (int) q.poll(LONG_DELAY_MS, MILLISECONDS));
400 >            mustEqual(i, q.poll(LONG_DELAY_MS, MILLISECONDS));
401              assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
402          }
403          long startTime = System.nanoTime();
# Line 418 | Line 411 | public class PriorityBlockingQueueTest e
411       * returning timeout status
412       */
413      public void testInterruptedTimedPoll() throws InterruptedException {
414 <        final BlockingQueue<Integer> q = populatedQueue(SIZE);
414 >        final BlockingQueue<Item> q = populatedQueue(SIZE);
415          final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
416          Thread t = newStartedThread(new CheckedRunnable() {
417              public void realRun() throws InterruptedException {
425                long startTime = System.nanoTime();
418                  for (int i = 0; i < SIZE; i++)
419 <                    assertEquals(i, (int) q.poll(LONG_DELAY_MS, MILLISECONDS));
419 >                    mustEqual(i, q.poll(LONG_DELAY_MS, MILLISECONDS));
420  
421                  Thread.currentThread().interrupt();
422                  try {
423 <                    q.poll(LONG_DELAY_MS, MILLISECONDS);
423 >                    q.poll(randomTimeout(), randomTimeUnit());
424                      shouldThrow();
425                  } catch (InterruptedException success) {}
426                  assertFalse(Thread.interrupted());
427  
428                  pleaseInterrupt.countDown();
429                  try {
430 <                    q.poll(LONG_DELAY_MS, MILLISECONDS);
430 >                    q.poll(LONGER_DELAY_MS, MILLISECONDS);
431                      shouldThrow();
432                  } catch (InterruptedException success) {}
433                  assertFalse(Thread.interrupted());
442
443                assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
434              }});
435  
436          await(pleaseInterrupt);
437 <        assertThreadBlocks(t, Thread.State.TIMED_WAITING);
437 >        if (randomBoolean()) assertThreadBlocks(t, Thread.State.TIMED_WAITING);
438          t.interrupt();
439          awaitTermination(t);
440      }
# Line 453 | Line 443 | public class PriorityBlockingQueueTest e
443       * peek returns next element, or null if empty
444       */
445      public void testPeek() {
446 <        PriorityBlockingQueue q = populatedQueue(SIZE);
446 >        PriorityBlockingQueue<Item> q = populatedQueue(SIZE);
447          for (int i = 0; i < SIZE; ++i) {
448 <            assertEquals(i, q.peek());
449 <            assertEquals(i, q.poll());
448 >            mustEqual(i, q.peek());
449 >            mustEqual(i, q.poll());
450              assertTrue(q.peek() == null ||
451                         !q.peek().equals(i));
452          }
# Line 467 | Line 457 | public class PriorityBlockingQueueTest e
457       * element returns next element, or throws NSEE if empty
458       */
459      public void testElement() {
460 <        PriorityBlockingQueue q = populatedQueue(SIZE);
460 >        PriorityBlockingQueue<Item> q = populatedQueue(SIZE);
461          for (int i = 0; i < SIZE; ++i) {
462 <            assertEquals(i, q.element());
463 <            assertEquals(i, q.poll());
462 >            mustEqual(i, q.element());
463 >            mustEqual(i, q.poll());
464          }
465          try {
466              q.element();
# Line 482 | Line 472 | public class PriorityBlockingQueueTest e
472       * remove removes next element, or throws NSEE if empty
473       */
474      public void testRemove() {
475 <        PriorityBlockingQueue q = populatedQueue(SIZE);
475 >        PriorityBlockingQueue<Item> q = populatedQueue(SIZE);
476          for (int i = 0; i < SIZE; ++i) {
477 <            assertEquals(i, q.remove());
477 >            mustEqual(i, q.remove());
478          }
479          try {
480              q.remove();
# Line 496 | Line 486 | public class PriorityBlockingQueueTest e
486       * contains(x) reports true when elements added but not yet removed
487       */
488      public void testContains() {
489 <        PriorityBlockingQueue q = populatedQueue(SIZE);
489 >        PriorityBlockingQueue<Item> q = populatedQueue(SIZE);
490          for (int i = 0; i < SIZE; ++i) {
491 <            assertTrue(q.contains(new Integer(i)));
491 >            mustContain(q, i);
492              q.poll();
493 <            assertFalse(q.contains(new Integer(i)));
493 >            mustNotContain(q, i);
494          }
495      }
496  
# Line 508 | Line 498 | public class PriorityBlockingQueueTest e
498       * clear removes all elements
499       */
500      public void testClear() {
501 <        PriorityBlockingQueue q = populatedQueue(SIZE);
501 >        PriorityBlockingQueue<Item> q = populatedQueue(SIZE);
502          q.clear();
503          assertTrue(q.isEmpty());
504 <        assertEquals(0, q.size());
504 >        mustEqual(0, q.size());
505          q.add(one);
506          assertFalse(q.isEmpty());
507 <        assertTrue(q.contains(one));
507 >        mustContain(q, one);
508          q.clear();
509          assertTrue(q.isEmpty());
510      }
# Line 523 | Line 513 | public class PriorityBlockingQueueTest e
513       * containsAll(c) is true when c contains a subset of elements
514       */
515      public void testContainsAll() {
516 <        PriorityBlockingQueue q = populatedQueue(SIZE);
517 <        PriorityBlockingQueue p = new PriorityBlockingQueue(SIZE);
516 >        PriorityBlockingQueue<Item> q = populatedQueue(SIZE);
517 >        PriorityBlockingQueue<Item> p = new PriorityBlockingQueue<>(SIZE);
518          for (int i = 0; i < SIZE; ++i) {
519              assertTrue(q.containsAll(p));
520              assertFalse(p.containsAll(q));
521 <            p.add(new Integer(i));
521 >            mustAdd(p, i);
522          }
523          assertTrue(p.containsAll(q));
524      }
# Line 537 | Line 527 | public class PriorityBlockingQueueTest e
527       * retainAll(c) retains only those elements of c and reports true if changed
528       */
529      public void testRetainAll() {
530 <        PriorityBlockingQueue q = populatedQueue(SIZE);
531 <        PriorityBlockingQueue p = populatedQueue(SIZE);
530 >        PriorityBlockingQueue<Item> q = populatedQueue(SIZE);
531 >        PriorityBlockingQueue<Item> p = populatedQueue(SIZE);
532          for (int i = 0; i < SIZE; ++i) {
533              boolean changed = q.retainAll(p);
534              if (i == 0)
# Line 547 | Line 537 | public class PriorityBlockingQueueTest e
537                  assertTrue(changed);
538  
539              assertTrue(q.containsAll(p));
540 <            assertEquals(SIZE - i, q.size());
540 >            mustEqual(SIZE - i, q.size());
541              p.remove();
542          }
543      }
# Line 557 | Line 547 | public class PriorityBlockingQueueTest e
547       */
548      public void testRemoveAll() {
549          for (int i = 1; i < SIZE; ++i) {
550 <            PriorityBlockingQueue q = populatedQueue(SIZE);
551 <            PriorityBlockingQueue p = populatedQueue(i);
550 >            PriorityBlockingQueue<Item> q = populatedQueue(SIZE);
551 >            PriorityBlockingQueue<Item> p = populatedQueue(i);
552              assertTrue(q.removeAll(p));
553 <            assertEquals(SIZE - i, q.size());
553 >            mustEqual(SIZE - i, q.size());
554              for (int j = 0; j < i; ++j) {
555 <                Integer x = (Integer)(p.remove());
556 <                assertFalse(q.contains(x));
555 >                Item x = p.remove();
556 >                mustNotContain(q, x);
557              }
558          }
559      }
# Line 572 | Line 562 | public class PriorityBlockingQueueTest e
562       * toArray contains all elements
563       */
564      public void testToArray() throws InterruptedException {
565 <        PriorityBlockingQueue q = populatedQueue(SIZE);
566 <        Object[] o = q.toArray();
567 <        Arrays.sort(o);
568 <        for (int i = 0; i < o.length; i++)
569 <            assertSame(o[i], q.take());
565 >        PriorityBlockingQueue<Item> q = populatedQueue(SIZE);
566 >        Object[] a = q.toArray();
567 >        assertSame(Object[].class, a.getClass());
568 >        Arrays.sort(a);
569 >        for (Object o : a)
570 >            assertSame(o, q.take());
571 >        assertTrue(q.isEmpty());
572      }
573  
574      /**
575       * toArray(a) contains all elements
576       */
577      public void testToArray2() throws InterruptedException {
578 <        PriorityBlockingQueue<Integer> q = populatedQueue(SIZE);
579 <        Integer[] ints = new Integer[SIZE];
580 <        Integer[] array = q.toArray(ints);
581 <        assertSame(ints, array);
582 <        Arrays.sort(ints);
583 <        for (int i = 0; i < ints.length; i++)
584 <            assertSame(ints[i], q.take());
578 >        PriorityBlockingQueue<Item> q = populatedQueue(SIZE);
579 >        Item[] items = new Item[SIZE];
580 >        Item[] array = q.toArray(items);
581 >        assertSame(items, array);
582 >        Arrays.sort(items);
583 >        for (Item o : items)
584 >            assertSame(o, q.take());
585 >        assertTrue(q.isEmpty());
586      }
587  
588      /**
589       * toArray(incompatible array type) throws ArrayStoreException
590       */
591 <    public void testToArray1_BadArg() {
592 <        PriorityBlockingQueue q = populatedQueue(SIZE);
591 >    @SuppressWarnings("CollectionToArraySafeParameter")
592 >    public void testToArray_incompatibleArrayType() {
593 >        PriorityBlockingQueue<Item> q = populatedQueue(SIZE);
594          try {
595              q.toArray(new String[10]);
596              shouldThrow();
# Line 607 | Line 601 | public class PriorityBlockingQueueTest e
601       * iterator iterates through all elements
602       */
603      public void testIterator() {
604 <        PriorityBlockingQueue q = populatedQueue(SIZE);
605 <        Iterator it = q.iterator();
604 >        PriorityBlockingQueue<Item> q = populatedQueue(SIZE);
605 >        Iterator<? extends Item> it = q.iterator();
606          int i;
607          for (i = 0; it.hasNext(); i++)
608 <            assertTrue(q.contains(it.next()));
609 <        assertEquals(i, SIZE);
608 >            mustContain(q, it.next());
609 >        mustEqual(i, SIZE);
610          assertIteratorExhausted(it);
611      }
612  
# Line 620 | Line 614 | public class PriorityBlockingQueueTest e
614       * iterator of empty collection has no elements
615       */
616      public void testEmptyIterator() {
617 <        assertIteratorExhausted(new PriorityBlockingQueue().iterator());
617 >        assertIteratorExhausted(new PriorityBlockingQueue<>().iterator());
618      }
619  
620      /**
621       * iterator.remove removes current element
622       */
623      public void testIteratorRemove() {
624 <        final PriorityBlockingQueue q = new PriorityBlockingQueue(3);
625 <        q.add(new Integer(2));
626 <        q.add(new Integer(1));
627 <        q.add(new Integer(3));
624 >        final PriorityBlockingQueue<Item> q = new PriorityBlockingQueue<>(3);
625 >        q.add(two);
626 >        q.add(one);
627 >        q.add(three);
628  
629 <        Iterator it = q.iterator();
629 >        Iterator<? extends Item> it = q.iterator();
630          it.next();
631          it.remove();
632  
633          it = q.iterator();
634 <        assertEquals(it.next(), new Integer(2));
635 <        assertEquals(it.next(), new Integer(3));
634 >        mustEqual(it.next(), two);
635 >        mustEqual(it.next(), three);
636          assertFalse(it.hasNext());
637      }
638  
# Line 646 | Line 640 | public class PriorityBlockingQueueTest e
640       * toString contains toStrings of elements
641       */
642      public void testToString() {
643 <        PriorityBlockingQueue q = populatedQueue(SIZE);
643 >        PriorityBlockingQueue<Item> q = populatedQueue(SIZE);
644          String s = q.toString();
645          for (int i = 0; i < SIZE; ++i) {
646              assertTrue(s.contains(String.valueOf(i)));
# Line 657 | Line 651 | public class PriorityBlockingQueueTest e
651       * timed poll transfers elements across Executor tasks
652       */
653      public void testPollInExecutor() {
654 <        final PriorityBlockingQueue q = new PriorityBlockingQueue(2);
654 >        final PriorityBlockingQueue<Item> q = new PriorityBlockingQueue<>(2);
655          final CheckedBarrier threadsStarted = new CheckedBarrier(2);
656          final ExecutorService executor = Executors.newFixedThreadPool(2);
657          try (PoolCleaner cleaner = cleaner(executor)) {
# Line 681 | Line 675 | public class PriorityBlockingQueueTest e
675       * A deserialized/reserialized queue has same elements
676       */
677      public void testSerialization() throws Exception {
678 <        Queue x = populatedQueue(SIZE);
679 <        Queue y = serialClone(x);
678 >        Queue<Item> x = populatedQueue(SIZE);
679 >        Queue<Item> y = serialClone(x);
680  
681          assertNotSame(x, y);
682 <        assertEquals(x.size(), y.size());
682 >        mustEqual(x.size(), y.size());
683          while (!x.isEmpty()) {
684              assertFalse(y.isEmpty());
685 <            assertEquals(x.remove(), y.remove());
685 >            mustEqual(x.remove(), y.remove());
686          }
687          assertTrue(y.isEmpty());
688      }
# Line 697 | Line 691 | public class PriorityBlockingQueueTest e
691       * drainTo(c) empties queue into another collection c
692       */
693      public void testDrainTo() {
694 <        PriorityBlockingQueue q = populatedQueue(SIZE);
695 <        ArrayList l = new ArrayList();
694 >        PriorityBlockingQueue<Item> q = populatedQueue(SIZE);
695 >        ArrayList<Item> l = new ArrayList<>();
696          q.drainTo(l);
697 <        assertEquals(0, q.size());
698 <        assertEquals(SIZE, l.size());
697 >        mustEqual(0, q.size());
698 >        mustEqual(SIZE, l.size());
699          for (int i = 0; i < SIZE; ++i)
700 <            assertEquals(l.get(i), new Integer(i));
700 >            mustEqual(l.get(i), i);
701          q.add(zero);
702          q.add(one);
703          assertFalse(q.isEmpty());
704 <        assertTrue(q.contains(zero));
711 <        assertTrue(q.contains(one));
704 >        mustContain(q, one);
705          l.clear();
706          q.drainTo(l);
707 <        assertEquals(0, q.size());
708 <        assertEquals(2, l.size());
707 >        mustEqual(0, q.size());
708 >        mustEqual(2, l.size());
709          for (int i = 0; i < 2; ++i)
710 <            assertEquals(l.get(i), new Integer(i));
710 >            mustEqual(l.get(i), i);
711      }
712  
713      /**
714       * drainTo empties queue
715       */
716      public void testDrainToWithActivePut() throws InterruptedException {
717 <        final PriorityBlockingQueue q = populatedQueue(SIZE);
717 >        final PriorityBlockingQueue<Item> q = populatedQueue(SIZE);
718          Thread t = new Thread(new CheckedRunnable() {
719              public void realRun() {
720 <                q.put(new Integer(SIZE + 1));
720 >                q.put(new Item(SIZE + 1));
721              }});
722  
723          t.start();
724 <        ArrayList l = new ArrayList();
724 >        ArrayList<Item> l = new ArrayList<>();
725          q.drainTo(l);
726          assertTrue(l.size() >= SIZE);
727          for (int i = 0; i < SIZE; ++i)
728 <            assertEquals(l.get(i), new Integer(i));
728 >            mustEqual(l.get(i), i);
729          t.join();
730          assertTrue(q.size() + l.size() >= SIZE);
731      }
# Line 741 | Line 734 | public class PriorityBlockingQueueTest e
734       * drainTo(c, n) empties first min(n, size) elements of queue into c
735       */
736      public void testDrainToN() {
737 <        PriorityBlockingQueue q = new PriorityBlockingQueue(SIZE * 2);
737 >        PriorityBlockingQueue<Item> q = new PriorityBlockingQueue<>(SIZE * 2);
738          for (int i = 0; i < SIZE + 2; ++i) {
739              for (int j = 0; j < SIZE; j++)
740 <                assertTrue(q.offer(new Integer(j)));
741 <            ArrayList l = new ArrayList();
740 >                mustOffer(q, j);
741 >            ArrayList<Item> l = new ArrayList<>();
742              q.drainTo(l, i);
743              int k = (i < SIZE) ? i : SIZE;
744 <            assertEquals(k, l.size());
745 <            assertEquals(SIZE - k, q.size());
744 >            mustEqual(k, l.size());
745 >            mustEqual(SIZE - k, q.size());
746              for (int j = 0; j < k; ++j)
747 <                assertEquals(l.get(j), new Integer(j));
747 >                mustEqual(l.get(j), j);
748              do {} while (q.poll() != null);
749          }
750      }
# Line 761 | Line 754 | public class PriorityBlockingQueueTest e
754       */
755      public void testNeverContainsNull() {
756          Collection<?>[] qs = {
757 <            new PriorityBlockingQueue<Object>(),
757 >            new PriorityBlockingQueue<>(),
758              populatedQueue(2),
759          };
760  

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