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import java.util.concurrent.ExecutorService; |
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import java.util.concurrent.LinkedTransferQueue; |
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import static java.util.concurrent.TimeUnit.MILLISECONDS; |
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import static java.util.concurrent.TimeUnit.NANOSECONDS; |
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|
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@SuppressWarnings({"unchecked", "rawtypes"}) |
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public class LinkedTransferQueueTest extends JSR166TestCase { |
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public void testPut() { |
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LinkedTransferQueue<Integer> q = new LinkedTransferQueue<Integer>(); |
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for (int i = 0; i < SIZE; ++i) { |
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assertEquals(q.size(), i); |
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assertEquals(i, q.size()); |
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q.put(i); |
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assertTrue(q.contains(i)); |
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} |
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} |
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|
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/** |
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* remove(x) removes x and returns true if present |
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*/ |
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public void testRemoveElement() throws InterruptedException { |
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LinkedTransferQueue q = populatedQueue(SIZE); |
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for (int i = 1; i < SIZE; i+=2) { |
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assertTrue(q.contains(i)); |
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assertTrue(q.remove(i)); |
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assertFalse(q.contains(i)); |
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assertTrue(q.contains(i-1)); |
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} |
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for (int i = 0; i < SIZE; i+=2) { |
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assertTrue(q.contains(i)); |
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assertTrue(q.remove(i)); |
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assertFalse(q.contains(i)); |
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assertFalse(q.remove(i+1)); |
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assertFalse(q.contains(i+1)); |
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} |
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checkEmpty(q); |
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} |
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|
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/** |
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* An add following remove(x) succeeds |
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*/ |
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public void testRemoveElementAndAdd() throws InterruptedException { |
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Queue x = populatedQueue(SIZE); |
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Queue y = serialClone(x); |
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|
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assertTrue(x != y); |
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assertNotSame(y, x); |
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assertEquals(x.size(), y.size()); |
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assertEquals(x.toString(), y.toString()); |
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assertTrue(Arrays.equals(x.toArray(), y.toArray())); |
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LinkedTransferQueue q = populatedQueue(SIZE); |
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ArrayList l = new ArrayList(); |
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q.drainTo(l); |
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assertEquals(q.size(), 0); |
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assertEquals(l.size(), SIZE); |
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assertEquals(0, q.size()); |
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assertEquals(SIZE, l.size()); |
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for (int i = 0; i < SIZE; ++i) { |
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assertEquals(l.get(i), i); |
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assertEquals(i, l.get(i)); |
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} |
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q.add(zero); |
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q.add(one); |
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assertTrue(q.contains(one)); |
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l.clear(); |
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q.drainTo(l); |
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assertEquals(q.size(), 0); |
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assertEquals(l.size(), 2); |
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assertEquals(0, q.size()); |
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assertEquals(2, l.size()); |
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for (int i = 0; i < 2; ++i) { |
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assertEquals(l.get(i), i); |
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assertEquals(i, l.get(i)); |
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} |
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} |
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|
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ArrayList l = new ArrayList(); |
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q.drainTo(l); |
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assertTrue(l.size() >= SIZE); |
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for (int i = 0; i < SIZE; ++i) { |
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assertEquals(l.get(i), i); |
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} |
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for (int i = 0; i < SIZE; ++i) |
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assertEquals(i, l.get(i)); |
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awaitTermination(t, MEDIUM_DELAY_MS); |
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assertTrue(q.size() + l.size() >= SIZE); |
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} |
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ArrayList l = new ArrayList(); |
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q.drainTo(l, i); |
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int k = (i < SIZE) ? i : SIZE; |
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assertEquals(l.size(), k); |
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assertEquals(q.size(), SIZE - k); |
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for (int j = 0; j < k; ++j) { |
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assertEquals(l.get(j), j); |
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} |
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assertEquals(k, l.size()); |
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assertEquals(SIZE - k, q.size()); |
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for (int j = 0; j < k; ++j) |
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assertEquals(j, l.get(j)); |
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while (q.poll() != null) |
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; |
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} |
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*/ |
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public void testWaitingConsumer() throws InterruptedException { |
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final LinkedTransferQueue q = new LinkedTransferQueue(); |
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assertEquals(q.getWaitingConsumerCount(), 0); |
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assertEquals(0, q.getWaitingConsumerCount()); |
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assertFalse(q.hasWaitingConsumer()); |
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final CountDownLatch threadStarted = new CountDownLatch(1); |
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|
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public void realRun() throws InterruptedException { |
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threadStarted.countDown(); |
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assertSame(one, q.poll(LONG_DELAY_MS, MILLISECONDS)); |
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assertEquals(q.getWaitingConsumerCount(), 0); |
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assertEquals(0, q.getWaitingConsumerCount()); |
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assertFalse(q.hasWaitingConsumer()); |
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}}); |
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|
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threadStarted.await(); |
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waitForThreadToEnterWaitState(t, SMALL_DELAY_MS); |
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assertEquals(q.getWaitingConsumerCount(), 1); |
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assertEquals(1, q.getWaitingConsumerCount()); |
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assertTrue(q.hasWaitingConsumer()); |
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|
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assertTrue(q.offer(one)); |
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assertEquals(q.getWaitingConsumerCount(), 0); |
727 |
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assertEquals(0, q.getWaitingConsumerCount()); |
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assertFalse(q.hasWaitingConsumer()); |
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|
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awaitTermination(t, MEDIUM_DELAY_MS); |
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assertFalse(q.isEmpty()); |
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return q; |
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} |
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|
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/** |
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* remove(null), contains(null) always return false |
1018 |
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*/ |
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public void testNeverContainsNull() { |
1020 |
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Collection<?>[] qs = { |
1021 |
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new LinkedTransferQueue<Object>(), |
1022 |
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populatedQueue(2), |
1023 |
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}; |
1024 |
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|
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for (Collection<?> q : qs) { |
1026 |
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assertFalse(q.contains(null)); |
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assertFalse(q.remove(null)); |
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} |
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} |
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} |