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/* |
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* Written by members of JCP JSR-166 Expert Group and released to the |
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* public domain. Use, modify, and redistribute this code in any way |
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* without acknowledgement. Other contributors include Andrew Wright, |
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* Jeffrey Hayes, Pat Fischer, Mike Judd. |
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* Written by Doug Lea with assistance from members of JCP JSR-166 |
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* Expert Group and released to the public domain, as explained at |
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* http://creativecommons.org/publicdomain/zero/1.0/ |
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* Other contributors include Andrew Wright, Jeffrey Hayes, |
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* Pat Fisher, Mike Judd. |
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*/ |
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import static java.util.concurrent.TimeUnit.MILLISECONDS; |
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|
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import junit.framework.*; |
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import java.util.*; |
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import java.util.concurrent.*; |
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import java.io.*; |
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import java.util.ArrayList; |
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import java.util.Arrays; |
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import java.util.Collection; |
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import java.util.Collections; |
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import java.util.Iterator; |
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import java.util.NoSuchElementException; |
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import java.util.Queue; |
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import java.util.concurrent.ArrayBlockingQueue; |
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import java.util.concurrent.BlockingQueue; |
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import java.util.concurrent.CountDownLatch; |
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import java.util.concurrent.Executors; |
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import java.util.concurrent.ExecutorService; |
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import java.util.concurrent.ThreadLocalRandom; |
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|
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import junit.framework.Test; |
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public class ArrayBlockingQueueTest extends JSR166TestCase { |
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|
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public static void main(String[] args) { |
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junit.textui.TestRunner.run (suite()); |
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main(suite(), args); |
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} |
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|
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public static Test suite() { |
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return new TestSuite(ArrayBlockingQueueTest.class); |
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class Implementation implements CollectionImplementation { |
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public Class<?> klazz() { return ArrayBlockingQueue.class; } |
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public Collection emptyCollection() { |
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boolean fair = ThreadLocalRandom.current().nextBoolean(); |
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return populatedQueue(0, SIZE, 2 * SIZE, fair); |
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} |
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public Object makeElement(int i) { return i; } |
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public boolean isConcurrent() { return true; } |
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public boolean permitsNulls() { return false; } |
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} |
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|
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return newTestSuite( |
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ArrayBlockingQueueTest.class, |
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new Fair().testSuite(), |
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new NonFair().testSuite(), |
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CollectionTest.testSuite(new Implementation())); |
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} |
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|
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public static class Fair extends BlockingQueueTest { |
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protected BlockingQueue emptyCollection() { |
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return populatedQueue(0, SIZE, 2 * SIZE, true); |
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} |
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} |
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|
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public static class NonFair extends BlockingQueueTest { |
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protected BlockingQueue emptyCollection() { |
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return populatedQueue(0, SIZE, 2 * SIZE, false); |
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} |
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} |
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|
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/** |
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* Create a queue of given size containing consecutive |
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* Integers 0 ... n. |
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* Returns a new queue of given size containing consecutive |
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* Integers 0 ... n - 1. |
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*/ |
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private ArrayBlockingQueue populatedQueue(int n) { |
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ArrayBlockingQueue q = new ArrayBlockingQueue(n); |
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static ArrayBlockingQueue<Integer> populatedQueue(int n) { |
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return populatedQueue(n, n, n, false); |
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} |
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|
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/** |
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* Returns a new queue of given size containing consecutive |
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* Integers 0 ... n - 1, with given capacity range and fairness. |
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*/ |
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static ArrayBlockingQueue<Integer> populatedQueue( |
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int size, int minCapacity, int maxCapacity, boolean fair) { |
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ThreadLocalRandom rnd = ThreadLocalRandom.current(); |
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int capacity = rnd.nextInt(minCapacity, maxCapacity + 1); |
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ArrayBlockingQueue<Integer> q = new ArrayBlockingQueue<>(capacity); |
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assertTrue(q.isEmpty()); |
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for(int i = 0; i < n; i++) |
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assertTrue(q.offer(new Integer(i))); |
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assertFalse(q.isEmpty()); |
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assertEquals(0, q.remainingCapacity()); |
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assertEquals(n, q.size()); |
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// shuffle circular array elements so they wrap |
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{ |
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int n = rnd.nextInt(capacity); |
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for (int i = 0; i < n; i++) q.add(42); |
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for (int i = 0; i < n; i++) q.remove(); |
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} |
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for (int i = 0; i < size; i++) |
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assertTrue(q.offer((Integer) i)); |
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assertEquals(size == 0, q.isEmpty()); |
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assertEquals(capacity - size, q.remainingCapacity()); |
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assertEquals(size, q.size()); |
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if (size > 0) |
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assertEquals((Integer) 0, q.peek()); |
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return q; |
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} |
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|
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|
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/** |
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* |
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* A new queue has the indicated capacity |
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*/ |
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public void testConstructor1() { |
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assertEquals(SIZE, new ArrayBlockingQueue(SIZE).remainingCapacity()); |
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} |
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/** |
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* |
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* Constructor throws IllegalArgumentException if capacity argument nonpositive |
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*/ |
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public void testConstructor2() { |
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try { |
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ArrayBlockingQueue q = new ArrayBlockingQueue(0); |
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shouldThrow(); |
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public void testConstructor_nonPositiveCapacity() { |
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for (int i : new int[] { 0, -1, Integer.MIN_VALUE }) { |
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try { |
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new ArrayBlockingQueue(i); |
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shouldThrow(); |
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} catch (IllegalArgumentException success) {} |
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for (boolean fair : new boolean[] { true, false }) { |
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try { |
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new ArrayBlockingQueue(i, fair); |
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shouldThrow(); |
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} catch (IllegalArgumentException success) {} |
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} |
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} |
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catch (IllegalArgumentException success) {} |
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} |
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|
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/** |
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* |
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* Initializing from null Collection throws NPE |
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*/ |
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public void testConstructor3() { |
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|
126 |
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public void testConstructor_nullCollection() { |
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try { |
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ArrayBlockingQueue q = new ArrayBlockingQueue(1, true, null); |
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new ArrayBlockingQueue(1, true, null); |
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shouldThrow(); |
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} |
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catch (NullPointerException success) {} |
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} catch (NullPointerException success) {} |
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} |
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|
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/** |
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* |
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* Initializing from Collection of null elements throws NPE |
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*/ |
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public void testConstructor4() { |
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Collection<Integer> elements = Arrays.asList(new Integer[SIZE]); |
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try { |
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Integer[] ints = new Integer[SIZE]; |
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ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE, false, Arrays.asList(ints)); |
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new ArrayBlockingQueue(SIZE, false, elements); |
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shouldThrow(); |
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} |
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catch (NullPointerException success) {} |
141 |
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} catch (NullPointerException success) {} |
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} |
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|
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/** |
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* |
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* Initializing from Collection with some null elements throws NPE |
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*/ |
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public void testConstructor5() { |
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Integer[] ints = new Integer[SIZE]; |
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for (int i = 0; i < SIZE - 1; ++i) |
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ints[i] = i; |
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Collection<Integer> elements = Arrays.asList(ints); |
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try { |
153 |
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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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ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE, false, Arrays.asList(ints)); |
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new ArrayBlockingQueue(SIZE, false, elements); |
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shouldThrow(); |
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} |
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catch (NullPointerException success) {} |
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> |
} catch (NullPointerException success) {} |
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} |
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|
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/** |
159 |
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* |
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* Initializing from too large collection throws IllegalArgumentException |
160 |
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*/ |
161 |
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public void testConstructor6() { |
161 |
> |
public void testConstructor_collectionTooLarge() { |
162 |
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// just barely fits - succeeds |
163 |
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new ArrayBlockingQueue(SIZE, false, |
164 |
> |
Collections.nCopies(SIZE, "")); |
165 |
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try { |
166 |
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Integer[] ints = new Integer[SIZE]; |
167 |
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for (int i = 0; i < SIZE; ++i) |
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ints[i] = new Integer(i); |
101 |
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ArrayBlockingQueue q = new ArrayBlockingQueue(1, false, Arrays.asList(ints)); |
166 |
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new ArrayBlockingQueue(SIZE - 1, false, |
167 |
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Collections.nCopies(SIZE, "")); |
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shouldThrow(); |
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} |
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catch (IllegalArgumentException success) {} |
169 |
> |
} catch (IllegalArgumentException success) {} |
170 |
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} |
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|
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/** |
173 |
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* |
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* Queue contains all elements of collection used to initialize |
174 |
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*/ |
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public void testConstructor7() { |
176 |
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try { |
177 |
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Integer[] ints = new Integer[SIZE]; |
178 |
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for (int i = 0; i < SIZE; ++i) |
179 |
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ints[i] = new Integer(i); |
180 |
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ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE, true, Arrays.asList(ints)); |
181 |
< |
for (int i = 0; i < SIZE; ++i) |
182 |
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assertEquals(ints[i], q.poll()); |
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} |
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finally {} |
176 |
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Integer[] ints = new Integer[SIZE]; |
177 |
> |
for (int i = 0; i < SIZE; ++i) |
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ints[i] = i; |
179 |
> |
Collection<Integer> elements = Arrays.asList(ints); |
180 |
> |
ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE, true, elements); |
181 |
> |
for (int i = 0; i < SIZE; ++i) |
182 |
> |
assertEquals(ints[i], q.poll()); |
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} |
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|
185 |
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/** |
186 |
< |
* |
186 |
> |
* Queue transitions from empty to full when elements added |
187 |
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*/ |
188 |
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public void testEmptyFull() { |
189 |
< |
ArrayBlockingQueue q = new ArrayBlockingQueue(2); |
189 |
> |
BlockingQueue q = populatedQueue(0, 2, 2, false); |
190 |
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assertTrue(q.isEmpty()); |
191 |
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assertEquals(2, q.remainingCapacity()); |
192 |
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q.add(one); |
193 |
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assertFalse(q.isEmpty()); |
194 |
< |
q.add(two); |
194 |
> |
assertTrue(q.offer(two)); |
195 |
|
assertFalse(q.isEmpty()); |
196 |
|
assertEquals(0, q.remainingCapacity()); |
197 |
|
assertFalse(q.offer(three)); |
198 |
|
} |
199 |
|
|
200 |
|
/** |
201 |
< |
* |
201 |
> |
* remainingCapacity decreases on add, increases on remove |
202 |
|
*/ |
203 |
|
public void testRemainingCapacity() { |
204 |
< |
ArrayBlockingQueue q = populatedQueue(SIZE); |
205 |
< |
for (int i = 0; i < SIZE; ++i) { |
206 |
< |
assertEquals(i, q.remainingCapacity()); |
207 |
< |
assertEquals(SIZE-i, q.size()); |
208 |
< |
q.remove(); |
204 |
> |
int size = ThreadLocalRandom.current().nextInt(1, SIZE); |
205 |
> |
BlockingQueue q = populatedQueue(size, size, 2 * size, false); |
206 |
> |
int spare = q.remainingCapacity(); |
207 |
> |
int capacity = spare + size; |
208 |
> |
for (int i = 0; i < size; i++) { |
209 |
> |
assertEquals(spare + i, q.remainingCapacity()); |
210 |
> |
assertEquals(capacity, q.size() + q.remainingCapacity()); |
211 |
> |
assertEquals(i, q.remove()); |
212 |
|
} |
213 |
< |
for (int i = 0; i < SIZE; ++i) { |
214 |
< |
assertEquals(SIZE-i, q.remainingCapacity()); |
215 |
< |
assertEquals(i, q.size()); |
216 |
< |
q.add(new Integer(i)); |
213 |
> |
for (int i = 0; i < size; i++) { |
214 |
> |
assertEquals(capacity - i, q.remainingCapacity()); |
215 |
> |
assertEquals(capacity, q.size() + q.remainingCapacity()); |
216 |
> |
assertTrue(q.add(i)); |
217 |
|
} |
218 |
|
} |
219 |
|
|
220 |
|
/** |
221 |
< |
* |
156 |
< |
*/ |
157 |
< |
public void testOfferNull() { |
158 |
< |
try { |
159 |
< |
ArrayBlockingQueue q = new ArrayBlockingQueue(1); |
160 |
< |
q.offer(null); |
161 |
< |
shouldThrow(); |
162 |
< |
} catch (NullPointerException success) { } |
163 |
< |
} |
164 |
< |
|
165 |
< |
/** |
166 |
< |
* |
221 |
> |
* Offer succeeds if not full; fails if full |
222 |
|
*/ |
223 |
|
public void testOffer() { |
224 |
|
ArrayBlockingQueue q = new ArrayBlockingQueue(1); |
227 |
|
} |
228 |
|
|
229 |
|
/** |
230 |
< |
* |
230 |
> |
* add succeeds if not full; throws IllegalStateException if full |
231 |
|
*/ |
232 |
|
public void testAdd() { |
233 |
< |
try { |
234 |
< |
ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE); |
235 |
< |
for (int i = 0; i < SIZE; ++i) { |
181 |
< |
assertTrue(q.add(new Integer(i))); |
182 |
< |
} |
183 |
< |
assertEquals(0, q.remainingCapacity()); |
184 |
< |
q.add(new Integer(SIZE)); |
185 |
< |
} catch (IllegalStateException success){ |
186 |
< |
} |
187 |
< |
} |
188 |
< |
|
189 |
< |
/** |
190 |
< |
* |
191 |
< |
*/ |
192 |
< |
public void testAddAll1() { |
233 |
> |
ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE); |
234 |
> |
for (int i = 0; i < SIZE; i++) assertTrue(q.add((Integer) i)); |
235 |
> |
assertEquals(0, q.remainingCapacity()); |
236 |
|
try { |
237 |
< |
ArrayBlockingQueue q = new ArrayBlockingQueue(1); |
195 |
< |
q.addAll(null); |
237 |
> |
q.add((Integer) SIZE); |
238 |
|
shouldThrow(); |
239 |
< |
} |
198 |
< |
catch (NullPointerException success) {} |
239 |
> |
} catch (IllegalStateException success) {} |
240 |
|
} |
241 |
+ |
|
242 |
|
/** |
243 |
< |
* |
243 |
> |
* addAll(this) throws IllegalArgumentException |
244 |
|
*/ |
245 |
< |
public void testAddAll2() { |
245 |
> |
public void testAddAllSelf() { |
246 |
> |
ArrayBlockingQueue q = populatedQueue(SIZE); |
247 |
|
try { |
248 |
< |
ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE); |
206 |
< |
Integer[] ints = new Integer[SIZE]; |
207 |
< |
q.addAll(Arrays.asList(ints)); |
248 |
> |
q.addAll(q); |
249 |
|
shouldThrow(); |
250 |
< |
} |
210 |
< |
catch (NullPointerException success) {} |
250 |
> |
} catch (IllegalArgumentException success) {} |
251 |
|
} |
252 |
+ |
|
253 |
|
/** |
254 |
< |
* |
254 |
> |
* addAll of a collection with any null elements throws NPE after |
255 |
> |
* possibly adding some elements |
256 |
|
*/ |
257 |
|
public void testAddAll3() { |
258 |
+ |
ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE); |
259 |
+ |
Integer[] ints = new Integer[SIZE]; |
260 |
+ |
for (int i = 0; i < SIZE - 1; ++i) |
261 |
+ |
ints[i] = new Integer(i); |
262 |
|
try { |
217 |
– |
ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE); |
218 |
– |
Integer[] ints = new Integer[SIZE]; |
219 |
– |
for (int i = 0; i < SIZE-1; ++i) |
220 |
– |
ints[i] = new Integer(i); |
263 |
|
q.addAll(Arrays.asList(ints)); |
264 |
|
shouldThrow(); |
265 |
< |
} |
224 |
< |
catch (NullPointerException success) {} |
265 |
> |
} catch (NullPointerException success) {} |
266 |
|
} |
267 |
+ |
|
268 |
|
/** |
269 |
< |
* |
269 |
> |
* addAll throws IllegalStateException if not enough room |
270 |
|
*/ |
271 |
< |
public void testAddAll4() { |
271 |
> |
public void testAddAll_insufficientSpace() { |
272 |
> |
int size = ThreadLocalRandom.current().nextInt(1, SIZE); |
273 |
> |
ArrayBlockingQueue q = populatedQueue(0, size, size, false); |
274 |
> |
// Just fits: |
275 |
> |
q.addAll(populatedQueue(size, size, 2 * size, false)); |
276 |
> |
assertEquals(0, q.remainingCapacity()); |
277 |
> |
assertEquals(size, q.size()); |
278 |
> |
assertEquals(0, q.peek()); |
279 |
|
try { |
280 |
< |
ArrayBlockingQueue q = new ArrayBlockingQueue(1); |
281 |
< |
Integer[] ints = new Integer[SIZE]; |
233 |
< |
for (int i = 0; i < SIZE; ++i) |
234 |
< |
ints[i] = new Integer(i); |
235 |
< |
q.addAll(Arrays.asList(ints)); |
280 |
> |
q = populatedQueue(0, size, size, false); |
281 |
> |
q.addAll(Collections.nCopies(size + 1, 42)); |
282 |
|
shouldThrow(); |
283 |
< |
} |
238 |
< |
catch (IllegalStateException success) {} |
283 |
> |
} catch (IllegalStateException success) {} |
284 |
|
} |
285 |
+ |
|
286 |
|
/** |
287 |
< |
* |
287 |
> |
* Queue contains all elements, in traversal order, of successful addAll |
288 |
|
*/ |
289 |
|
public void testAddAll5() { |
290 |
< |
try { |
291 |
< |
Integer[] empty = new Integer[0]; |
292 |
< |
Integer[] ints = new Integer[SIZE]; |
293 |
< |
for (int i = 0; i < SIZE; ++i) |
294 |
< |
ints[i] = new Integer(i); |
295 |
< |
ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE); |
296 |
< |
assertFalse(q.addAll(Arrays.asList(empty))); |
297 |
< |
assertTrue(q.addAll(Arrays.asList(ints))); |
298 |
< |
for (int i = 0; i < SIZE; ++i) |
253 |
< |
assertEquals(ints[i], q.poll()); |
254 |
< |
} |
255 |
< |
finally {} |
256 |
< |
} |
257 |
< |
|
258 |
< |
/** |
259 |
< |
* |
260 |
< |
*/ |
261 |
< |
public void testPutNull() { |
262 |
< |
try { |
263 |
< |
ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE); |
264 |
< |
q.put(null); |
265 |
< |
shouldThrow(); |
266 |
< |
} |
267 |
< |
catch (NullPointerException success){ |
268 |
< |
} |
269 |
< |
catch (InterruptedException ie) { |
270 |
< |
unexpectedException(); |
271 |
< |
} |
272 |
< |
} |
273 |
< |
|
274 |
< |
/** |
275 |
< |
* |
276 |
< |
*/ |
277 |
< |
public void testPut() { |
278 |
< |
try { |
279 |
< |
ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE); |
280 |
< |
for (int i = 0; i < SIZE; ++i) { |
281 |
< |
Integer I = new Integer(i); |
282 |
< |
q.put(I); |
283 |
< |
assertTrue(q.contains(I)); |
284 |
< |
} |
285 |
< |
assertEquals(0, q.remainingCapacity()); |
286 |
< |
} |
287 |
< |
catch (InterruptedException ie) { |
288 |
< |
unexpectedException(); |
289 |
< |
} |
290 |
< |
} |
291 |
< |
|
292 |
< |
/** |
293 |
< |
* |
294 |
< |
*/ |
295 |
< |
public void testBlockingPut() { |
296 |
< |
Thread t = new Thread(new Runnable() { |
297 |
< |
public void run() { |
298 |
< |
int added = 0; |
299 |
< |
try { |
300 |
< |
ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE); |
301 |
< |
for (int i = 0; i < SIZE; ++i) { |
302 |
< |
q.put(new Integer(i)); |
303 |
< |
++added; |
304 |
< |
} |
305 |
< |
q.put(new Integer(SIZE)); |
306 |
< |
threadShouldThrow(); |
307 |
< |
} catch (InterruptedException ie){ |
308 |
< |
threadAssertEquals(added, SIZE); |
309 |
< |
} |
310 |
< |
}}); |
311 |
< |
try { |
312 |
< |
t.start(); |
313 |
< |
Thread.sleep(SHORT_DELAY_MS); |
314 |
< |
t.interrupt(); |
315 |
< |
t.join(); |
316 |
< |
} |
317 |
< |
catch (InterruptedException ie) { |
318 |
< |
unexpectedException(); |
319 |
< |
} |
290 |
> |
Integer[] empty = new Integer[0]; |
291 |
> |
Integer[] ints = new Integer[SIZE]; |
292 |
> |
for (int i = 0; i < SIZE; ++i) |
293 |
> |
ints[i] = new Integer(i); |
294 |
> |
ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE); |
295 |
> |
assertFalse(q.addAll(Arrays.asList(empty))); |
296 |
> |
assertTrue(q.addAll(Arrays.asList(ints))); |
297 |
> |
for (int i = 0; i < SIZE; ++i) |
298 |
> |
assertEquals(ints[i], q.poll()); |
299 |
|
} |
300 |
|
|
301 |
|
/** |
302 |
< |
* |
302 |
> |
* all elements successfully put are contained |
303 |
|
*/ |
304 |
< |
public void testPutWithTake() { |
305 |
< |
final ArrayBlockingQueue q = new ArrayBlockingQueue(2); |
306 |
< |
Thread t = new Thread(new Runnable() { |
307 |
< |
public void run() { |
308 |
< |
int added = 0; |
309 |
< |
try { |
331 |
< |
q.put(new Object()); |
332 |
< |
++added; |
333 |
< |
q.put(new Object()); |
334 |
< |
++added; |
335 |
< |
q.put(new Object()); |
336 |
< |
++added; |
337 |
< |
q.put(new Object()); |
338 |
< |
++added; |
339 |
< |
threadShouldThrow(); |
340 |
< |
} catch (InterruptedException e){ |
341 |
< |
threadAssertTrue(added >= 2); |
342 |
< |
} |
343 |
< |
} |
344 |
< |
}); |
345 |
< |
try { |
346 |
< |
t.start(); |
347 |
< |
Thread.sleep(SHORT_DELAY_MS); |
348 |
< |
q.take(); |
349 |
< |
t.interrupt(); |
350 |
< |
t.join(); |
351 |
< |
} catch (Exception e){ |
352 |
< |
unexpectedException(); |
304 |
> |
public void testPut() throws InterruptedException { |
305 |
> |
ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE); |
306 |
> |
for (int i = 0; i < SIZE; ++i) { |
307 |
> |
Integer x = new Integer(i); |
308 |
> |
q.put(x); |
309 |
> |
assertTrue(q.contains(x)); |
310 |
|
} |
311 |
+ |
assertEquals(0, q.remainingCapacity()); |
312 |
|
} |
313 |
|
|
314 |
|
/** |
315 |
< |
* |
315 |
> |
* put blocks interruptibly if full |
316 |
|
*/ |
317 |
< |
public void testTimedOffer() { |
318 |
< |
final ArrayBlockingQueue q = new ArrayBlockingQueue(2); |
319 |
< |
Thread t = new Thread(new Runnable() { |
320 |
< |
public void run() { |
321 |
< |
try { |
322 |
< |
q.put(new Object()); |
323 |
< |
q.put(new Object()); |
324 |
< |
threadAssertFalse(q.offer(new Object(), SHORT_DELAY_MS/2, TimeUnit.MILLISECONDS)); |
325 |
< |
q.offer(new Object(), LONG_DELAY_MS, TimeUnit.MILLISECONDS); |
326 |
< |
threadShouldThrow(); |
327 |
< |
} catch (InterruptedException success){} |
328 |
< |
} |
329 |
< |
}); |
330 |
< |
|
331 |
< |
try { |
332 |
< |
t.start(); |
333 |
< |
Thread.sleep(SHORT_DELAY_MS); |
334 |
< |
t.interrupt(); |
335 |
< |
t.join(); |
336 |
< |
} catch (Exception e){ |
337 |
< |
unexpectedException(); |
338 |
< |
} |
317 |
> |
public void testBlockingPut() throws InterruptedException { |
318 |
> |
final ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE); |
319 |
> |
final CountDownLatch pleaseInterrupt = new CountDownLatch(1); |
320 |
> |
Thread t = newStartedThread(new CheckedRunnable() { |
321 |
> |
public void realRun() throws InterruptedException { |
322 |
> |
for (int i = 0; i < SIZE; ++i) |
323 |
> |
q.put(i); |
324 |
> |
assertEquals(SIZE, q.size()); |
325 |
> |
assertEquals(0, q.remainingCapacity()); |
326 |
> |
|
327 |
> |
Thread.currentThread().interrupt(); |
328 |
> |
try { |
329 |
> |
q.put(99); |
330 |
> |
shouldThrow(); |
331 |
> |
} catch (InterruptedException success) {} |
332 |
> |
assertFalse(Thread.interrupted()); |
333 |
> |
|
334 |
> |
pleaseInterrupt.countDown(); |
335 |
> |
try { |
336 |
> |
q.put(99); |
337 |
> |
shouldThrow(); |
338 |
> |
} catch (InterruptedException success) {} |
339 |
> |
assertFalse(Thread.interrupted()); |
340 |
> |
}}); |
341 |
> |
|
342 |
> |
await(pleaseInterrupt); |
343 |
> |
assertThreadBlocks(t, Thread.State.WAITING); |
344 |
> |
t.interrupt(); |
345 |
> |
awaitTermination(t); |
346 |
> |
assertEquals(SIZE, q.size()); |
347 |
> |
assertEquals(0, q.remainingCapacity()); |
348 |
|
} |
349 |
|
|
350 |
|
/** |
351 |
< |
* |
351 |
> |
* put blocks interruptibly waiting for take when full |
352 |
|
*/ |
353 |
< |
public void testTake() { |
354 |
< |
try { |
355 |
< |
ArrayBlockingQueue q = populatedQueue(SIZE); |
356 |
< |
for (int i = 0; i < SIZE; ++i) { |
357 |
< |
assertEquals(i, ((Integer)q.take()).intValue()); |
358 |
< |
} |
359 |
< |
} catch (InterruptedException e){ |
360 |
< |
unexpectedException(); |
361 |
< |
} |
353 |
> |
public void testPutWithTake() throws InterruptedException { |
354 |
> |
final int capacity = 2; |
355 |
> |
final ArrayBlockingQueue q = new ArrayBlockingQueue(capacity); |
356 |
> |
final CountDownLatch pleaseTake = new CountDownLatch(1); |
357 |
> |
final CountDownLatch pleaseInterrupt = new CountDownLatch(1); |
358 |
> |
Thread t = newStartedThread(new CheckedRunnable() { |
359 |
> |
public void realRun() throws InterruptedException { |
360 |
> |
for (int i = 0; i < capacity; i++) |
361 |
> |
q.put(i); |
362 |
> |
pleaseTake.countDown(); |
363 |
> |
q.put(86); |
364 |
> |
|
365 |
> |
Thread.currentThread().interrupt(); |
366 |
> |
try { |
367 |
> |
q.put(99); |
368 |
> |
shouldThrow(); |
369 |
> |
} catch (InterruptedException success) {} |
370 |
> |
assertFalse(Thread.interrupted()); |
371 |
> |
|
372 |
> |
pleaseInterrupt.countDown(); |
373 |
> |
try { |
374 |
> |
q.put(99); |
375 |
> |
shouldThrow(); |
376 |
> |
} catch (InterruptedException success) {} |
377 |
> |
assertFalse(Thread.interrupted()); |
378 |
> |
}}); |
379 |
> |
|
380 |
> |
await(pleaseTake); |
381 |
> |
assertEquals(0, q.remainingCapacity()); |
382 |
> |
assertEquals(0, q.take()); |
383 |
> |
|
384 |
> |
await(pleaseInterrupt); |
385 |
> |
assertThreadBlocks(t, Thread.State.WAITING); |
386 |
> |
t.interrupt(); |
387 |
> |
awaitTermination(t); |
388 |
> |
assertEquals(0, q.remainingCapacity()); |
389 |
|
} |
390 |
|
|
391 |
|
/** |
392 |
< |
* |
392 |
> |
* timed offer times out if full and elements not taken |
393 |
|
*/ |
394 |
< |
public void testTakeFromEmpty() { |
394 |
> |
public void testTimedOffer() { |
395 |
|
final ArrayBlockingQueue q = new ArrayBlockingQueue(2); |
396 |
< |
Thread t = new Thread(new Runnable() { |
397 |
< |
public void run() { |
398 |
< |
try { |
399 |
< |
q.take(); |
400 |
< |
threadShouldThrow(); |
401 |
< |
} catch (InterruptedException success){ } |
402 |
< |
} |
403 |
< |
}); |
404 |
< |
try { |
405 |
< |
t.start(); |
406 |
< |
Thread.sleep(SHORT_DELAY_MS); |
407 |
< |
t.interrupt(); |
408 |
< |
t.join(); |
409 |
< |
} catch (Exception e){ |
410 |
< |
unexpectedException(); |
411 |
< |
} |
396 |
> |
final CountDownLatch pleaseInterrupt = new CountDownLatch(1); |
397 |
> |
Thread t = newStartedThread(new CheckedRunnable() { |
398 |
> |
public void realRun() throws InterruptedException { |
399 |
> |
q.put(new Object()); |
400 |
> |
q.put(new Object()); |
401 |
> |
long startTime = System.nanoTime(); |
402 |
> |
assertFalse(q.offer(new Object(), timeoutMillis(), MILLISECONDS)); |
403 |
> |
assertTrue(millisElapsedSince(startTime) >= timeoutMillis()); |
404 |
> |
|
405 |
> |
Thread.currentThread().interrupt(); |
406 |
> |
try { |
407 |
> |
q.offer(new Object(), 2 * LONG_DELAY_MS, MILLISECONDS); |
408 |
> |
shouldThrow(); |
409 |
> |
} catch (InterruptedException success) {} |
410 |
> |
assertFalse(Thread.interrupted()); |
411 |
> |
|
412 |
> |
pleaseInterrupt.countDown(); |
413 |
> |
try { |
414 |
> |
q.offer(new Object(), 2 * LONG_DELAY_MS, MILLISECONDS); |
415 |
> |
shouldThrow(); |
416 |
> |
} catch (InterruptedException success) {} |
417 |
> |
assertFalse(Thread.interrupted()); |
418 |
> |
}}); |
419 |
> |
|
420 |
> |
await(pleaseInterrupt); |
421 |
> |
assertThreadBlocks(t, Thread.State.TIMED_WAITING); |
422 |
> |
t.interrupt(); |
423 |
> |
awaitTermination(t); |
424 |
|
} |
425 |
|
|
426 |
|
/** |
427 |
< |
* |
428 |
< |
*/ |
429 |
< |
public void testBlockingTake() { |
430 |
< |
Thread t = new Thread(new Runnable() { |
431 |
< |
public void run() { |
432 |
< |
try { |
427 |
< |
ArrayBlockingQueue q = populatedQueue(SIZE); |
428 |
< |
for (int i = 0; i < SIZE; ++i) { |
429 |
< |
threadAssertEquals(i, ((Integer)q.take()).intValue()); |
430 |
< |
} |
431 |
< |
q.take(); |
432 |
< |
threadShouldThrow(); |
433 |
< |
} catch (InterruptedException success){ |
434 |
< |
} |
435 |
< |
}}); |
436 |
< |
try { |
437 |
< |
t.start(); |
438 |
< |
Thread.sleep(SHORT_DELAY_MS); |
439 |
< |
t.interrupt(); |
440 |
< |
t.join(); |
441 |
< |
} |
442 |
< |
catch (InterruptedException ie) { |
443 |
< |
unexpectedException(); |
427 |
> |
* take retrieves elements in FIFO order |
428 |
> |
*/ |
429 |
> |
public void testTake() throws InterruptedException { |
430 |
> |
ArrayBlockingQueue q = populatedQueue(SIZE); |
431 |
> |
for (int i = 0; i < SIZE; ++i) { |
432 |
> |
assertEquals(i, q.take()); |
433 |
|
} |
434 |
|
} |
435 |
|
|
436 |
+ |
/** |
437 |
+ |
* Take removes existing elements until empty, then blocks interruptibly |
438 |
+ |
*/ |
439 |
+ |
public void testBlockingTake() throws InterruptedException { |
440 |
+ |
final ArrayBlockingQueue q = populatedQueue(SIZE); |
441 |
+ |
final CountDownLatch pleaseInterrupt = new CountDownLatch(1); |
442 |
+ |
Thread t = newStartedThread(new CheckedRunnable() { |
443 |
+ |
public void realRun() throws InterruptedException { |
444 |
+ |
for (int i = 0; i < SIZE; i++) assertEquals(i, q.take()); |
445 |
+ |
|
446 |
+ |
Thread.currentThread().interrupt(); |
447 |
+ |
try { |
448 |
+ |
q.take(); |
449 |
+ |
shouldThrow(); |
450 |
+ |
} catch (InterruptedException success) {} |
451 |
+ |
assertFalse(Thread.interrupted()); |
452 |
+ |
|
453 |
+ |
pleaseInterrupt.countDown(); |
454 |
+ |
try { |
455 |
+ |
q.take(); |
456 |
+ |
shouldThrow(); |
457 |
+ |
} catch (InterruptedException success) {} |
458 |
+ |
assertFalse(Thread.interrupted()); |
459 |
+ |
}}); |
460 |
+ |
|
461 |
+ |
await(pleaseInterrupt); |
462 |
+ |
assertThreadBlocks(t, Thread.State.WAITING); |
463 |
+ |
t.interrupt(); |
464 |
+ |
awaitTermination(t); |
465 |
+ |
} |
466 |
|
|
467 |
|
/** |
468 |
< |
* |
468 |
> |
* poll succeeds unless empty |
469 |
|
*/ |
470 |
|
public void testPoll() { |
471 |
|
ArrayBlockingQueue q = populatedQueue(SIZE); |
472 |
|
for (int i = 0; i < SIZE; ++i) { |
473 |
< |
assertEquals(i, ((Integer)q.poll()).intValue()); |
473 |
> |
assertEquals(i, q.poll()); |
474 |
|
} |
475 |
< |
assertNull(q.poll()); |
475 |
> |
assertNull(q.poll()); |
476 |
|
} |
477 |
|
|
478 |
|
/** |
479 |
< |
* |
479 |
> |
* timed poll with zero timeout succeeds when non-empty, else times out |
480 |
|
*/ |
481 |
< |
public void testTimedPoll0() { |
482 |
< |
try { |
483 |
< |
ArrayBlockingQueue q = populatedQueue(SIZE); |
484 |
< |
for (int i = 0; i < SIZE; ++i) { |
485 |
< |
assertEquals(i, ((Integer)q.poll(0, TimeUnit.MILLISECONDS)).intValue()); |
486 |
< |
} |
487 |
< |
assertNull(q.poll(0, TimeUnit.MILLISECONDS)); |
469 |
< |
} catch (InterruptedException e){ |
470 |
< |
unexpectedException(); |
471 |
< |
} |
481 |
> |
public void testTimedPoll0() throws InterruptedException { |
482 |
> |
ArrayBlockingQueue q = populatedQueue(SIZE); |
483 |
> |
for (int i = 0; i < SIZE; ++i) { |
484 |
> |
assertEquals(i, q.poll(0, MILLISECONDS)); |
485 |
> |
} |
486 |
> |
assertNull(q.poll(0, MILLISECONDS)); |
487 |
> |
checkEmpty(q); |
488 |
|
} |
489 |
|
|
490 |
|
/** |
491 |
< |
* |
491 |
> |
* timed poll with nonzero timeout succeeds when non-empty, else times out |
492 |
|
*/ |
493 |
< |
public void testTimedPoll() { |
494 |
< |
try { |
495 |
< |
ArrayBlockingQueue q = populatedQueue(SIZE); |
496 |
< |
for (int i = 0; i < SIZE; ++i) { |
497 |
< |
assertEquals(i, ((Integer)q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS)).intValue()); |
498 |
< |
} |
499 |
< |
assertNull(q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS)); |
500 |
< |
} catch (InterruptedException e){ |
501 |
< |
unexpectedException(); |
502 |
< |
} |
493 |
> |
public void testTimedPoll() throws InterruptedException { |
494 |
> |
ArrayBlockingQueue q = populatedQueue(SIZE); |
495 |
> |
for (int i = 0; i < SIZE; ++i) { |
496 |
> |
long startTime = System.nanoTime(); |
497 |
> |
assertEquals(i, q.poll(LONG_DELAY_MS, MILLISECONDS)); |
498 |
> |
assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS); |
499 |
> |
} |
500 |
> |
long startTime = System.nanoTime(); |
501 |
> |
assertNull(q.poll(timeoutMillis(), MILLISECONDS)); |
502 |
> |
assertTrue(millisElapsedSince(startTime) >= timeoutMillis()); |
503 |
> |
checkEmpty(q); |
504 |
|
} |
505 |
|
|
506 |
|
/** |
507 |
< |
* |
508 |
< |
*/ |
509 |
< |
public void testInterruptedTimedPoll() { |
510 |
< |
Thread t = new Thread(new Runnable() { |
511 |
< |
public void run() { |
512 |
< |
try { |
513 |
< |
ArrayBlockingQueue q = populatedQueue(SIZE); |
514 |
< |
for (int i = 0; i < SIZE; ++i) { |
515 |
< |
threadAssertEquals(i, ((Integer)q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS)).intValue()); |
516 |
< |
} |
517 |
< |
threadAssertNull(q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS)); |
501 |
< |
} catch (InterruptedException success){ |
502 |
< |
} |
503 |
< |
}}); |
504 |
< |
try { |
505 |
< |
t.start(); |
506 |
< |
Thread.sleep(SHORT_DELAY_MS); |
507 |
< |
t.interrupt(); |
508 |
< |
t.join(); |
509 |
< |
} |
510 |
< |
catch (InterruptedException ie) { |
511 |
< |
unexpectedException(); |
512 |
< |
} |
513 |
< |
} |
507 |
> |
* Interrupted timed poll throws InterruptedException instead of |
508 |
> |
* returning timeout status |
509 |
> |
*/ |
510 |
> |
public void testInterruptedTimedPoll() throws InterruptedException { |
511 |
> |
final BlockingQueue<Integer> q = populatedQueue(SIZE); |
512 |
> |
final CountDownLatch pleaseInterrupt = new CountDownLatch(1); |
513 |
> |
Thread t = newStartedThread(new CheckedRunnable() { |
514 |
> |
public void realRun() throws InterruptedException { |
515 |
> |
long startTime = System.nanoTime(); |
516 |
> |
for (int i = 0; i < SIZE; i++) |
517 |
> |
assertEquals(i, (int) q.poll(LONG_DELAY_MS, MILLISECONDS)); |
518 |
|
|
519 |
< |
/** |
520 |
< |
* |
521 |
< |
*/ |
522 |
< |
public void testTimedPollWithOffer() { |
523 |
< |
final ArrayBlockingQueue q = new ArrayBlockingQueue(2); |
524 |
< |
Thread t = new Thread(new Runnable() { |
525 |
< |
public void run() { |
526 |
< |
try { |
527 |
< |
threadAssertNull(q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS)); |
528 |
< |
q.poll(LONG_DELAY_MS, TimeUnit.MILLISECONDS); |
529 |
< |
q.poll(LONG_DELAY_MS, TimeUnit.MILLISECONDS); |
530 |
< |
threadShouldThrow(); |
531 |
< |
} catch (InterruptedException success) { } |
528 |
< |
} |
529 |
< |
}); |
530 |
< |
try { |
531 |
< |
t.start(); |
532 |
< |
Thread.sleep(SMALL_DELAY_MS); |
533 |
< |
assertTrue(q.offer(zero, SHORT_DELAY_MS, TimeUnit.MILLISECONDS)); |
534 |
< |
t.interrupt(); |
535 |
< |
t.join(); |
536 |
< |
} catch (Exception e){ |
537 |
< |
unexpectedException(); |
538 |
< |
} |
539 |
< |
} |
519 |
> |
Thread.currentThread().interrupt(); |
520 |
> |
try { |
521 |
> |
q.poll(LONG_DELAY_MS, MILLISECONDS); |
522 |
> |
shouldThrow(); |
523 |
> |
} catch (InterruptedException success) {} |
524 |
> |
assertFalse(Thread.interrupted()); |
525 |
> |
|
526 |
> |
pleaseInterrupt.countDown(); |
527 |
> |
try { |
528 |
> |
q.poll(LONG_DELAY_MS, MILLISECONDS); |
529 |
> |
shouldThrow(); |
530 |
> |
} catch (InterruptedException success) {} |
531 |
> |
assertFalse(Thread.interrupted()); |
532 |
|
|
533 |
+ |
assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS); |
534 |
+ |
}}); |
535 |
+ |
|
536 |
+ |
await(pleaseInterrupt); |
537 |
+ |
assertThreadBlocks(t, Thread.State.TIMED_WAITING); |
538 |
+ |
t.interrupt(); |
539 |
+ |
awaitTermination(t); |
540 |
+ |
checkEmpty(q); |
541 |
+ |
} |
542 |
|
|
543 |
|
/** |
544 |
< |
* |
544 |
> |
* peek returns next element, or null if empty |
545 |
|
*/ |
546 |
|
public void testPeek() { |
547 |
|
ArrayBlockingQueue q = populatedQueue(SIZE); |
548 |
|
for (int i = 0; i < SIZE; ++i) { |
549 |
< |
assertEquals(i, ((Integer)q.peek()).intValue()); |
550 |
< |
q.poll(); |
549 |
> |
assertEquals(i, q.peek()); |
550 |
> |
assertEquals(i, q.poll()); |
551 |
|
assertTrue(q.peek() == null || |
552 |
< |
i != ((Integer)q.peek()).intValue()); |
552 |
> |
!q.peek().equals(i)); |
553 |
|
} |
554 |
< |
assertNull(q.peek()); |
554 |
> |
assertNull(q.peek()); |
555 |
|
} |
556 |
|
|
557 |
|
/** |
558 |
< |
* |
558 |
> |
* element returns next element, or throws NSEE if empty |
559 |
|
*/ |
560 |
|
public void testElement() { |
561 |
|
ArrayBlockingQueue q = populatedQueue(SIZE); |
562 |
|
for (int i = 0; i < SIZE; ++i) { |
563 |
< |
assertEquals(i, ((Integer)q.element()).intValue()); |
564 |
< |
q.poll(); |
563 |
> |
assertEquals(i, q.element()); |
564 |
> |
assertEquals(i, q.poll()); |
565 |
|
} |
566 |
|
try { |
567 |
|
q.element(); |
568 |
|
shouldThrow(); |
569 |
< |
} |
569 |
< |
catch (NoSuchElementException success) {} |
569 |
> |
} catch (NoSuchElementException success) {} |
570 |
|
} |
571 |
|
|
572 |
|
/** |
573 |
< |
* |
573 |
> |
* remove removes next element, or throws NSEE if empty |
574 |
|
*/ |
575 |
|
public void testRemove() { |
576 |
|
ArrayBlockingQueue q = populatedQueue(SIZE); |
577 |
|
for (int i = 0; i < SIZE; ++i) { |
578 |
< |
assertEquals(i, ((Integer)q.remove()).intValue()); |
578 |
> |
assertEquals(i, q.remove()); |
579 |
|
} |
580 |
|
try { |
581 |
|
q.remove(); |
582 |
|
shouldThrow(); |
583 |
< |
} catch (NoSuchElementException success){ |
584 |
< |
} |
583 |
> |
} catch (NoSuchElementException success) {} |
584 |
|
} |
585 |
|
|
586 |
|
/** |
587 |
< |
* |
589 |
< |
*/ |
590 |
< |
public void testRemoveElement() { |
591 |
< |
ArrayBlockingQueue q = populatedQueue(SIZE); |
592 |
< |
for (int i = 1; i < SIZE; i+=2) { |
593 |
< |
assertTrue(q.remove(new Integer(i))); |
594 |
< |
} |
595 |
< |
for (int i = 0; i < SIZE; i+=2) { |
596 |
< |
assertTrue(q.remove(new Integer(i))); |
597 |
< |
assertFalse(q.remove(new Integer(i+1))); |
598 |
< |
} |
599 |
< |
assertTrue(q.isEmpty()); |
600 |
< |
} |
601 |
< |
|
602 |
< |
/** |
603 |
< |
* |
587 |
> |
* contains(x) reports true when elements added but not yet removed |
588 |
|
*/ |
589 |
|
public void testContains() { |
590 |
< |
ArrayBlockingQueue q = populatedQueue(SIZE); |
591 |
< |
for (int i = 0; i < SIZE; ++i) { |
590 |
> |
int size = ThreadLocalRandom.current().nextInt(1, SIZE); |
591 |
> |
ArrayBlockingQueue q = populatedQueue(size, size, 2 * size, false); |
592 |
> |
assertFalse(q.contains(null)); |
593 |
> |
for (int i = 0; i < size; ++i) { |
594 |
|
assertTrue(q.contains(new Integer(i))); |
595 |
< |
q.poll(); |
595 |
> |
assertEquals(i, q.poll()); |
596 |
|
assertFalse(q.contains(new Integer(i))); |
597 |
|
} |
598 |
|
} |
599 |
|
|
600 |
|
/** |
601 |
< |
* |
601 |
> |
* clear removes all elements |
602 |
|
*/ |
603 |
|
public void testClear() { |
604 |
< |
ArrayBlockingQueue q = populatedQueue(SIZE); |
604 |
> |
int size = ThreadLocalRandom.current().nextInt(1, 5); |
605 |
> |
ArrayBlockingQueue q = populatedQueue(size, size, 2 * size, false); |
606 |
> |
int capacity = size + q.remainingCapacity(); |
607 |
|
q.clear(); |
608 |
|
assertTrue(q.isEmpty()); |
609 |
|
assertEquals(0, q.size()); |
610 |
< |
assertEquals(SIZE, q.remainingCapacity()); |
610 |
> |
assertEquals(capacity, q.remainingCapacity()); |
611 |
|
q.add(one); |
612 |
|
assertFalse(q.isEmpty()); |
613 |
+ |
assertTrue(q.contains(one)); |
614 |
|
q.clear(); |
615 |
|
assertTrue(q.isEmpty()); |
616 |
|
} |
617 |
|
|
618 |
|
/** |
619 |
< |
* |
619 |
> |
* containsAll(c) is true when c contains a subset of elements |
620 |
|
*/ |
621 |
|
public void testContainsAll() { |
622 |
|
ArrayBlockingQueue q = populatedQueue(SIZE); |
630 |
|
} |
631 |
|
|
632 |
|
/** |
633 |
< |
* |
633 |
> |
* retainAll(c) retains only those elements of c and reports true if changed |
634 |
|
*/ |
635 |
|
public void testRetainAll() { |
636 |
|
ArrayBlockingQueue q = populatedQueue(SIZE); |
643 |
|
assertTrue(changed); |
644 |
|
|
645 |
|
assertTrue(q.containsAll(p)); |
646 |
< |
assertEquals(SIZE-i, q.size()); |
646 |
> |
assertEquals(SIZE - i, q.size()); |
647 |
|
p.remove(); |
648 |
|
} |
649 |
|
} |
650 |
|
|
651 |
|
/** |
652 |
< |
* |
652 |
> |
* removeAll(c) removes only those elements of c and reports true if changed |
653 |
|
*/ |
654 |
|
public void testRemoveAll() { |
655 |
|
for (int i = 1; i < SIZE; ++i) { |
656 |
|
ArrayBlockingQueue q = populatedQueue(SIZE); |
657 |
|
ArrayBlockingQueue p = populatedQueue(i); |
658 |
|
assertTrue(q.removeAll(p)); |
659 |
< |
assertEquals(SIZE-i, q.size()); |
659 |
> |
assertEquals(SIZE - i, q.size()); |
660 |
|
for (int j = 0; j < i; ++j) { |
661 |
< |
Integer I = (Integer)(p.remove()); |
662 |
< |
assertFalse(q.contains(I)); |
661 |
> |
Integer x = (Integer)(p.remove()); |
662 |
> |
assertFalse(q.contains(x)); |
663 |
|
} |
664 |
|
} |
665 |
|
} |
666 |
|
|
667 |
+ |
void checkToArray(ArrayBlockingQueue<Integer> q) { |
668 |
+ |
int size = q.size(); |
669 |
+ |
Object[] a1 = q.toArray(); |
670 |
+ |
assertEquals(size, a1.length); |
671 |
+ |
Integer[] a2 = q.toArray(new Integer[0]); |
672 |
+ |
assertEquals(size, a2.length); |
673 |
+ |
Integer[] a3 = q.toArray(new Integer[Math.max(0, size - 1)]); |
674 |
+ |
assertEquals(size, a3.length); |
675 |
+ |
Integer[] a4 = new Integer[size]; |
676 |
+ |
assertSame(a4, q.toArray(a4)); |
677 |
+ |
Integer[] a5 = new Integer[size + 1]; |
678 |
+ |
Arrays.fill(a5, 42); |
679 |
+ |
assertSame(a5, q.toArray(a5)); |
680 |
+ |
Integer[] a6 = new Integer[size + 2]; |
681 |
+ |
Arrays.fill(a6, 42); |
682 |
+ |
assertSame(a6, q.toArray(a6)); |
683 |
+ |
Object[][] as = { a1, a2, a3, a4, a5, a6 }; |
684 |
+ |
for (Object[] a : as) { |
685 |
+ |
if (a.length > size) assertNull(a[size]); |
686 |
+ |
if (a.length > size + 1) assertEquals(42, a[size + 1]); |
687 |
+ |
} |
688 |
+ |
Iterator it = q.iterator(); |
689 |
+ |
Integer s = q.peek(); |
690 |
+ |
for (int i = 0; i < size; i++) { |
691 |
+ |
Integer x = (Integer) it.next(); |
692 |
+ |
assertEquals(s + i, (int) x); |
693 |
+ |
for (Object[] a : as) |
694 |
+ |
assertSame(a1[i], x); |
695 |
+ |
} |
696 |
+ |
} |
697 |
|
|
698 |
|
/** |
699 |
< |
* |
699 |
> |
* toArray() and toArray(a) contain all elements in FIFO order |
700 |
|
*/ |
701 |
|
public void testToArray() { |
702 |
< |
ArrayBlockingQueue q = populatedQueue(SIZE); |
703 |
< |
Object[] o = q.toArray(); |
704 |
< |
try { |
705 |
< |
for(int i = 0; i < o.length; i++) |
706 |
< |
assertEquals(o[i], q.take()); |
707 |
< |
} catch (InterruptedException e){ |
708 |
< |
unexpectedException(); |
709 |
< |
} |
702 |
> |
final ThreadLocalRandom rnd = ThreadLocalRandom.current(); |
703 |
> |
final int size = rnd.nextInt(6); |
704 |
> |
final int capacity = Math.max(1, size + rnd.nextInt(size + 1)); |
705 |
> |
ArrayBlockingQueue<Integer> q = new ArrayBlockingQueue<>(capacity); |
706 |
> |
for (int i = 0; i < size; i++) { |
707 |
> |
checkToArray(q); |
708 |
> |
q.add(i); |
709 |
> |
} |
710 |
> |
// Provoke wraparound |
711 |
> |
int added = size * 2; |
712 |
> |
for (int i = 0; i < added; i++) { |
713 |
> |
checkToArray(q); |
714 |
> |
assertEquals((Integer) i, q.poll()); |
715 |
> |
q.add(size + i); |
716 |
> |
} |
717 |
> |
for (int i = 0; i < size; i++) { |
718 |
> |
checkToArray(q); |
719 |
> |
assertEquals((Integer) (added + i), q.poll()); |
720 |
> |
} |
721 |
|
} |
722 |
|
|
723 |
|
/** |
724 |
< |
* |
724 |
> |
* toArray(incompatible array type) throws ArrayStoreException |
725 |
|
*/ |
726 |
< |
public void testToArray2() { |
726 |
> |
public void testToArray_incompatibleArrayType() { |
727 |
|
ArrayBlockingQueue q = populatedQueue(SIZE); |
728 |
< |
Integer[] ints = new Integer[SIZE]; |
729 |
< |
ints = (Integer[])q.toArray(ints); |
730 |
< |
try { |
731 |
< |
for(int i = 0; i < ints.length; i++) |
732 |
< |
assertEquals(ints[i], q.take()); |
733 |
< |
} catch (InterruptedException e){ |
734 |
< |
unexpectedException(); |
735 |
< |
} |
728 |
> |
try { |
729 |
> |
q.toArray(new String[10]); |
730 |
> |
shouldThrow(); |
731 |
> |
} catch (ArrayStoreException success) {} |
732 |
> |
try { |
733 |
> |
q.toArray(new String[0]); |
734 |
> |
shouldThrow(); |
735 |
> |
} catch (ArrayStoreException success) {} |
736 |
|
} |
737 |
< |
|
737 |
> |
|
738 |
|
/** |
739 |
< |
* |
739 |
> |
* iterator iterates through all elements |
740 |
|
*/ |
741 |
< |
public void testIterator() { |
741 |
> |
public void testIterator() throws InterruptedException { |
742 |
|
ArrayBlockingQueue q = populatedQueue(SIZE); |
743 |
< |
Iterator it = q.iterator(); |
744 |
< |
try { |
745 |
< |
while(it.hasNext()){ |
746 |
< |
assertEquals(it.next(), q.take()); |
747 |
< |
} |
748 |
< |
} catch (InterruptedException e){ |
749 |
< |
unexpectedException(); |
750 |
< |
} |
743 |
> |
Iterator it = q.iterator(); |
744 |
> |
int i; |
745 |
> |
for (i = 0; it.hasNext(); i++) |
746 |
> |
assertTrue(q.contains(it.next())); |
747 |
> |
assertEquals(i, SIZE); |
748 |
> |
assertIteratorExhausted(it); |
749 |
> |
|
750 |
> |
it = q.iterator(); |
751 |
> |
for (i = 0; it.hasNext(); i++) |
752 |
> |
assertEquals(it.next(), q.take()); |
753 |
> |
assertEquals(i, SIZE); |
754 |
> |
assertIteratorExhausted(it); |
755 |
|
} |
756 |
|
|
757 |
|
/** |
758 |
< |
* |
758 |
> |
* iterator of empty collection has no elements |
759 |
> |
*/ |
760 |
> |
public void testEmptyIterator() { |
761 |
> |
assertIteratorExhausted(new ArrayBlockingQueue(SIZE).iterator()); |
762 |
> |
} |
763 |
> |
|
764 |
> |
/** |
765 |
> |
* iterator.remove removes current element |
766 |
> |
*/ |
767 |
> |
public void testIteratorRemove() { |
768 |
> |
final ArrayBlockingQueue q = new ArrayBlockingQueue(3); |
769 |
> |
q.add(two); |
770 |
> |
q.add(one); |
771 |
> |
q.add(three); |
772 |
> |
|
773 |
> |
Iterator it = q.iterator(); |
774 |
> |
it.next(); |
775 |
> |
it.remove(); |
776 |
> |
|
777 |
> |
it = q.iterator(); |
778 |
> |
assertSame(it.next(), one); |
779 |
> |
assertSame(it.next(), three); |
780 |
> |
assertFalse(it.hasNext()); |
781 |
> |
} |
782 |
> |
|
783 |
> |
/** |
784 |
> |
* iterator ordering is FIFO |
785 |
|
*/ |
786 |
|
public void testIteratorOrdering() { |
787 |
|
final ArrayBlockingQueue q = new ArrayBlockingQueue(3); |
793 |
|
|
794 |
|
int k = 0; |
795 |
|
for (Iterator it = q.iterator(); it.hasNext();) { |
796 |
< |
int i = ((Integer)(it.next())).intValue(); |
737 |
< |
assertEquals(++k, i); |
796 |
> |
assertEquals(++k, it.next()); |
797 |
|
} |
798 |
|
assertEquals(3, k); |
799 |
|
} |
800 |
|
|
801 |
|
/** |
802 |
< |
* |
802 |
> |
* Modifications do not cause iterators to fail |
803 |
|
*/ |
804 |
< |
public void testWeaklyConsistentIteration () { |
804 |
> |
public void testWeaklyConsistentIteration() { |
805 |
|
final ArrayBlockingQueue q = new ArrayBlockingQueue(3); |
806 |
|
q.add(one); |
807 |
|
q.add(two); |
808 |
|
q.add(three); |
809 |
< |
try { |
810 |
< |
for (Iterator it = q.iterator(); it.hasNext();) { |
811 |
< |
q.remove(); |
753 |
< |
it.next(); |
754 |
< |
} |
755 |
< |
} |
756 |
< |
catch (ConcurrentModificationException e) { |
757 |
< |
unexpectedException(); |
809 |
> |
for (Iterator it = q.iterator(); it.hasNext();) { |
810 |
> |
q.remove(); |
811 |
> |
it.next(); |
812 |
|
} |
759 |
– |
|
813 |
|
assertEquals(0, q.size()); |
814 |
|
} |
815 |
|
|
763 |
– |
|
816 |
|
/** |
817 |
< |
* |
817 |
> |
* toString contains toStrings of elements |
818 |
|
*/ |
819 |
|
public void testToString() { |
820 |
|
ArrayBlockingQueue q = populatedQueue(SIZE); |
821 |
|
String s = q.toString(); |
822 |
|
for (int i = 0; i < SIZE; ++i) { |
823 |
< |
assertTrue(s.indexOf(String.valueOf(i)) >= 0); |
823 |
> |
assertTrue(s.contains(String.valueOf(i))); |
824 |
|
} |
825 |
< |
} |
774 |
< |
|
825 |
> |
} |
826 |
|
|
827 |
|
/** |
828 |
< |
* |
828 |
> |
* offer transfers elements across Executor tasks |
829 |
|
*/ |
830 |
|
public void testOfferInExecutor() { |
780 |
– |
|
831 |
|
final ArrayBlockingQueue q = new ArrayBlockingQueue(2); |
782 |
– |
|
832 |
|
q.add(one); |
833 |
|
q.add(two); |
834 |
+ |
final CheckedBarrier threadsStarted = new CheckedBarrier(2); |
835 |
+ |
final ExecutorService executor = Executors.newFixedThreadPool(2); |
836 |
+ |
try (PoolCleaner cleaner = cleaner(executor)) { |
837 |
+ |
executor.execute(new CheckedRunnable() { |
838 |
+ |
public void realRun() throws InterruptedException { |
839 |
+ |
assertFalse(q.offer(three)); |
840 |
+ |
threadsStarted.await(); |
841 |
+ |
assertTrue(q.offer(three, LONG_DELAY_MS, MILLISECONDS)); |
842 |
+ |
assertEquals(0, q.remainingCapacity()); |
843 |
+ |
}}); |
844 |
|
|
845 |
< |
ExecutorService executor = Executors.newFixedThreadPool(2); |
846 |
< |
|
847 |
< |
executor.execute(new Runnable() { |
848 |
< |
public void run() { |
849 |
< |
threadAssertFalse(q.offer(three)); |
850 |
< |
try { |
851 |
< |
threadAssertTrue(q.offer(three, MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS)); |
793 |
< |
threadAssertEquals(0, q.remainingCapacity()); |
794 |
< |
} |
795 |
< |
catch (InterruptedException e) { |
796 |
< |
threadUnexpectedException(); |
797 |
< |
} |
798 |
< |
} |
799 |
< |
}); |
800 |
< |
|
801 |
< |
executor.execute(new Runnable() { |
802 |
< |
public void run() { |
803 |
< |
try { |
804 |
< |
Thread.sleep(SMALL_DELAY_MS); |
805 |
< |
threadAssertEquals(one, q.take()); |
806 |
< |
} |
807 |
< |
catch (InterruptedException e) { |
808 |
< |
threadUnexpectedException(); |
809 |
< |
} |
810 |
< |
} |
811 |
< |
}); |
812 |
< |
|
813 |
< |
joinPool(executor); |
814 |
< |
|
845 |
> |
executor.execute(new CheckedRunnable() { |
846 |
> |
public void realRun() throws InterruptedException { |
847 |
> |
threadsStarted.await(); |
848 |
> |
assertEquals(0, q.remainingCapacity()); |
849 |
> |
assertSame(one, q.take()); |
850 |
> |
}}); |
851 |
> |
} |
852 |
|
} |
853 |
|
|
854 |
|
/** |
855 |
< |
* |
855 |
> |
* timed poll retrieves elements across Executor threads |
856 |
|
*/ |
857 |
|
public void testPollInExecutor() { |
821 |
– |
|
858 |
|
final ArrayBlockingQueue q = new ArrayBlockingQueue(2); |
859 |
+ |
final CheckedBarrier threadsStarted = new CheckedBarrier(2); |
860 |
+ |
final ExecutorService executor = Executors.newFixedThreadPool(2); |
861 |
+ |
try (PoolCleaner cleaner = cleaner(executor)) { |
862 |
+ |
executor.execute(new CheckedRunnable() { |
863 |
+ |
public void realRun() throws InterruptedException { |
864 |
+ |
assertNull(q.poll()); |
865 |
+ |
threadsStarted.await(); |
866 |
+ |
assertSame(one, q.poll(LONG_DELAY_MS, MILLISECONDS)); |
867 |
+ |
checkEmpty(q); |
868 |
+ |
}}); |
869 |
|
|
870 |
< |
ExecutorService executor = Executors.newFixedThreadPool(2); |
871 |
< |
|
872 |
< |
executor.execute(new Runnable() { |
827 |
< |
public void run() { |
828 |
< |
threadAssertNull(q.poll()); |
829 |
< |
try { |
830 |
< |
threadAssertTrue(null != q.poll(MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS)); |
831 |
< |
threadAssertTrue(q.isEmpty()); |
832 |
< |
} |
833 |
< |
catch (InterruptedException e) { |
834 |
< |
threadUnexpectedException(); |
835 |
< |
} |
836 |
< |
} |
837 |
< |
}); |
838 |
< |
|
839 |
< |
executor.execute(new Runnable() { |
840 |
< |
public void run() { |
841 |
< |
try { |
842 |
< |
Thread.sleep(SMALL_DELAY_MS); |
870 |
> |
executor.execute(new CheckedRunnable() { |
871 |
> |
public void realRun() throws InterruptedException { |
872 |
> |
threadsStarted.await(); |
873 |
|
q.put(one); |
874 |
< |
} |
875 |
< |
catch (InterruptedException e) { |
876 |
< |
threadUnexpectedException(); |
847 |
< |
} |
848 |
< |
} |
849 |
< |
}); |
850 |
< |
|
851 |
< |
joinPool(executor); |
874 |
> |
}}); |
875 |
> |
} |
876 |
> |
} |
877 |
|
|
878 |
+ |
/** |
879 |
+ |
* A deserialized/reserialized queue has same elements in same order |
880 |
+ |
*/ |
881 |
+ |
public void testSerialization() throws Exception { |
882 |
+ |
Queue x = populatedQueue(SIZE); |
883 |
+ |
Queue y = serialClone(x); |
884 |
+ |
|
885 |
+ |
assertNotSame(x, y); |
886 |
+ |
assertEquals(x.size(), y.size()); |
887 |
+ |
assertEquals(x.toString(), y.toString()); |
888 |
+ |
assertTrue(Arrays.equals(x.toArray(), y.toArray())); |
889 |
+ |
while (!x.isEmpty()) { |
890 |
+ |
assertFalse(y.isEmpty()); |
891 |
+ |
assertEquals(x.remove(), y.remove()); |
892 |
+ |
} |
893 |
+ |
assertTrue(y.isEmpty()); |
894 |
|
} |
895 |
|
|
896 |
|
/** |
897 |
< |
* |
897 |
> |
* drainTo(c) empties queue into another collection c |
898 |
|
*/ |
899 |
< |
public void testSerialization() { |
899 |
> |
public void testDrainTo() { |
900 |
|
ArrayBlockingQueue q = populatedQueue(SIZE); |
901 |
+ |
ArrayList l = new ArrayList(); |
902 |
+ |
q.drainTo(l); |
903 |
+ |
assertEquals(0, q.size()); |
904 |
+ |
assertEquals(SIZE, l.size()); |
905 |
+ |
for (int i = 0; i < SIZE; ++i) |
906 |
+ |
assertEquals(l.get(i), new Integer(i)); |
907 |
+ |
q.add(zero); |
908 |
+ |
q.add(one); |
909 |
+ |
assertFalse(q.isEmpty()); |
910 |
+ |
assertTrue(q.contains(zero)); |
911 |
+ |
assertTrue(q.contains(one)); |
912 |
+ |
l.clear(); |
913 |
+ |
q.drainTo(l); |
914 |
+ |
assertEquals(0, q.size()); |
915 |
+ |
assertEquals(2, l.size()); |
916 |
+ |
for (int i = 0; i < 2; ++i) |
917 |
+ |
assertEquals(l.get(i), new Integer(i)); |
918 |
+ |
} |
919 |
|
|
920 |
< |
try { |
921 |
< |
ByteArrayOutputStream bout = new ByteArrayOutputStream(10000); |
922 |
< |
ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout)); |
923 |
< |
out.writeObject(q); |
924 |
< |
out.close(); |
920 |
> |
/** |
921 |
> |
* drainTo empties full queue, unblocking a waiting put. |
922 |
> |
*/ |
923 |
> |
public void testDrainToWithActivePut() throws InterruptedException { |
924 |
> |
final ArrayBlockingQueue q = populatedQueue(SIZE); |
925 |
> |
Thread t = new Thread(new CheckedRunnable() { |
926 |
> |
public void realRun() throws InterruptedException { |
927 |
> |
q.put(new Integer(SIZE + 1)); |
928 |
> |
}}); |
929 |
> |
|
930 |
> |
t.start(); |
931 |
> |
ArrayList l = new ArrayList(); |
932 |
> |
q.drainTo(l); |
933 |
> |
assertTrue(l.size() >= SIZE); |
934 |
> |
for (int i = 0; i < SIZE; ++i) |
935 |
> |
assertEquals(l.get(i), new Integer(i)); |
936 |
> |
t.join(); |
937 |
> |
assertTrue(q.size() + l.size() >= SIZE); |
938 |
> |
} |
939 |
|
|
940 |
< |
ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray()); |
941 |
< |
ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin)); |
942 |
< |
ArrayBlockingQueue r = (ArrayBlockingQueue)in.readObject(); |
943 |
< |
assertEquals(q.size(), r.size()); |
944 |
< |
while (!q.isEmpty()) |
945 |
< |
assertEquals(q.remove(), r.remove()); |
946 |
< |
} catch(Exception e){ |
947 |
< |
unexpectedException(); |
940 |
> |
/** |
941 |
> |
* drainTo(c, n) empties first min(n, size) elements of queue into c |
942 |
> |
*/ |
943 |
> |
public void testDrainToN() { |
944 |
> |
ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE * 2); |
945 |
> |
for (int i = 0; i < SIZE + 2; ++i) { |
946 |
> |
for (int j = 0; j < SIZE; j++) |
947 |
> |
assertTrue(q.offer(new Integer(j))); |
948 |
> |
ArrayList l = new ArrayList(); |
949 |
> |
q.drainTo(l, i); |
950 |
> |
int k = (i < SIZE) ? i : SIZE; |
951 |
> |
assertEquals(k, l.size()); |
952 |
> |
assertEquals(SIZE - k, q.size()); |
953 |
> |
for (int j = 0; j < k; ++j) |
954 |
> |
assertEquals(l.get(j), new Integer(j)); |
955 |
> |
do {} while (q.poll() != null); |
956 |
|
} |
957 |
|
} |
958 |
|
|
959 |
+ |
/** |
960 |
+ |
* remove(null), contains(null) always return false |
961 |
+ |
*/ |
962 |
+ |
public void testNeverContainsNull() { |
963 |
+ |
Collection<?>[] qs = { |
964 |
+ |
populatedQueue(0, 1, 10, false), |
965 |
+ |
populatedQueue(2, 2, 10, true), |
966 |
+ |
}; |
967 |
|
|
968 |
+ |
for (Collection<?> q : qs) { |
969 |
+ |
assertFalse(q.contains(null)); |
970 |
+ |
assertFalse(q.remove(null)); |
971 |
+ |
} |
972 |
+ |
} |
973 |
|
} |