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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 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 static java.util.concurrent.TimeUnit.MILLISECONDS; |
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|
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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.Comparator; |
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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.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.PriorityBlockingQueue; |
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|
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import junit.framework.Test; |
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|
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public class PriorityBlockingQueueTest extends JSR166TestCase { |
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|
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public static class Generic extends BlockingQueueTest { |
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protected BlockingQueue emptyCollection() { |
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return new PriorityBlockingQueue(); |
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} |
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} |
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|
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public static class InitialCapacity extends BlockingQueueTest { |
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protected BlockingQueue emptyCollection() { |
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return new PriorityBlockingQueue(SIZE); |
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} |
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} |
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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(PriorityBlockingQueueTest.class); |
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class Implementation implements CollectionImplementation { |
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public Class<?> klazz() { return PriorityBlockingQueue.class; } |
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public Collection emptyCollection() { return new PriorityBlockingQueue(); } |
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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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return newTestSuite(PriorityBlockingQueueTest.class, |
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new Generic().testSuite(), |
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new InitialCapacity().testSuite(), |
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CollectionTest.testSuite(new Implementation())); |
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} |
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|
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private static final int NOCAP = Integer.MAX_VALUE; |
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|
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/** Sample Comparator */ |
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static class MyReverseComparator implements Comparator { |
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static class MyReverseComparator implements Comparator { |
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public int compare(Object x, Object y) { |
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int i = ((Integer)x).intValue(); |
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int j = ((Integer)y).intValue(); |
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if (i < j) return 1; |
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if (i > j) return -1; |
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return 0; |
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return ((Comparable)y).compareTo(x); |
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} |
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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 PriorityBlockingQueue populatedQueue(int n) { |
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PriorityBlockingQueue q = new PriorityBlockingQueue(n); |
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private static PriorityBlockingQueue<Integer> populatedQueue(int n) { |
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PriorityBlockingQueue<Integer> q = |
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new PriorityBlockingQueue<Integer>(n); |
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assertTrue(q.isEmpty()); |
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for(int i = n-1; i >= 0; i-=2) |
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assertTrue(q.offer(new Integer(i))); |
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for(int i = (n & 1); i < n; i+=2) |
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assertTrue(q.offer(new Integer(i))); |
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for (int i = n - 1; i >= 0; i -= 2) |
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assertTrue(q.offer(new Integer(i))); |
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for (int i = (n & 1); i < n; i += 2) |
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assertTrue(q.offer(new Integer(i))); |
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assertFalse(q.isEmpty()); |
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assertEquals(NOCAP, q.remainingCapacity()); |
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assertEquals(n, q.size()); |
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assertEquals(Integer.MAX_VALUE, q.remainingCapacity()); |
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assertEquals(n, q.size()); |
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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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public void testConstructor1(){ |
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assertEquals(NOCAP, new PriorityBlockingQueue(SIZE).remainingCapacity()); |
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|
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/** |
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* A new queue has unbounded capacity |
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*/ |
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public void testConstructor1() { |
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assertEquals(Integer.MAX_VALUE, |
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new PriorityBlockingQueue(SIZE).remainingCapacity()); |
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} |
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|
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public void testConstructor2(){ |
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/** |
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* Constructor throws IAE if capacity argument nonpositive |
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*/ |
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public void testConstructor2() { |
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try { |
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PriorityBlockingQueue q = new PriorityBlockingQueue(0); |
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fail("Cannot make zero-sized"); |
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} |
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catch (IllegalArgumentException success) {} |
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new PriorityBlockingQueue(0); |
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shouldThrow(); |
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} catch (IllegalArgumentException success) {} |
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} |
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|
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public void testConstructor3(){ |
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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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try { |
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PriorityBlockingQueue q = new PriorityBlockingQueue(null); |
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fail("Cannot make from null collection"); |
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} |
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catch (NullPointerException success) {} |
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new PriorityBlockingQueue(null); |
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shouldThrow(); |
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} catch (NullPointerException success) {} |
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} |
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|
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public void testConstructor4(){ |
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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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PriorityBlockingQueue q = new PriorityBlockingQueue(Arrays.asList(ints)); |
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fail("Cannot make with null elements"); |
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} |
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catch (NullPointerException success) {} |
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new PriorityBlockingQueue(elements); |
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shouldThrow(); |
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} catch (NullPointerException success) {} |
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} |
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|
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public void testConstructor5(){ |
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try { |
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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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PriorityBlockingQueue q = new PriorityBlockingQueue(Arrays.asList(ints)); |
129 |
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fail("Cannot make with null elements"); |
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} |
131 |
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catch (NullPointerException success) {} |
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/** |
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* Initializing from Collection with some null elements throws NPE |
125 |
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*/ |
126 |
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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 { |
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new PriorityBlockingQueue(elements); |
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shouldThrow(); |
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} catch (NullPointerException success) {} |
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} |
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|
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public void testConstructor6(){ |
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try { |
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Integer[] ints = new Integer[SIZE]; |
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for (int i = 0; i < SIZE; ++i) |
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ints[i] = new Integer(i); |
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PriorityBlockingQueue q = new PriorityBlockingQueue(Arrays.asList(ints)); |
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for (int i = 0; i < SIZE; ++i) |
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assertEquals(ints[i], q.poll()); |
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} |
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finally {} |
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/** |
138 |
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* Queue contains all elements of collection used to initialize |
139 |
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*/ |
140 |
> |
public void testConstructor6() { |
141 |
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Integer[] ints = new Integer[SIZE]; |
142 |
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for (int i = 0; i < SIZE; ++i) |
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ints[i] = i; |
144 |
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PriorityBlockingQueue q = new PriorityBlockingQueue(Arrays.asList(ints)); |
145 |
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for (int i = 0; i < SIZE; ++i) |
146 |
> |
assertEquals(ints[i], q.poll()); |
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} |
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|
149 |
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public void testConstructor7(){ |
150 |
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try { |
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PriorityBlockingQueue q = new PriorityBlockingQueue(SIZE, new MyReverseComparator()); |
152 |
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Integer[] ints = new Integer[SIZE]; |
153 |
< |
for (int i = 0; i < SIZE; ++i) |
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ints[i] = new Integer(i); |
155 |
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q.addAll(Arrays.asList(ints)); |
156 |
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for (int i = SIZE-1; i >= 0; --i) |
157 |
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assertEquals(ints[i], q.poll()); |
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} |
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finally {} |
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/** |
150 |
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* The comparator used in constructor is used |
151 |
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*/ |
152 |
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public void testConstructor7() { |
153 |
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MyReverseComparator cmp = new MyReverseComparator(); |
154 |
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PriorityBlockingQueue q = new PriorityBlockingQueue(SIZE, cmp); |
155 |
> |
assertEquals(cmp, q.comparator()); |
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> |
Integer[] ints = new Integer[SIZE]; |
157 |
> |
for (int i = 0; i < SIZE; ++i) |
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ints[i] = new Integer(i); |
159 |
> |
q.addAll(Arrays.asList(ints)); |
160 |
> |
for (int i = SIZE - 1; i >= 0; --i) |
161 |
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assertEquals(ints[i], q.poll()); |
162 |
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} |
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|
164 |
+ |
/** |
165 |
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* isEmpty is true before add, false after |
166 |
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*/ |
167 |
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public void testEmpty() { |
168 |
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PriorityBlockingQueue q = new PriorityBlockingQueue(2); |
169 |
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assertTrue(q.isEmpty()); |
170 |
< |
assertEquals(NOCAP, q.remainingCapacity()); |
171 |
< |
q.add(new Integer(1)); |
170 |
> |
assertEquals(Integer.MAX_VALUE, q.remainingCapacity()); |
171 |
> |
q.add(one); |
172 |
|
assertFalse(q.isEmpty()); |
173 |
< |
q.add(new Integer(2)); |
173 |
> |
q.add(two); |
174 |
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q.remove(); |
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q.remove(); |
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assertTrue(q.isEmpty()); |
177 |
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} |
178 |
|
|
179 |
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public void testRemainingCapacity(){ |
180 |
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PriorityBlockingQueue q = populatedQueue(SIZE); |
179 |
> |
/** |
180 |
> |
* remainingCapacity() always returns Integer.MAX_VALUE |
181 |
> |
*/ |
182 |
> |
public void testRemainingCapacity() { |
183 |
> |
BlockingQueue q = populatedQueue(SIZE); |
184 |
|
for (int i = 0; i < SIZE; ++i) { |
185 |
< |
assertEquals(NOCAP, q.remainingCapacity()); |
186 |
< |
assertEquals(SIZE-i, q.size()); |
187 |
< |
q.remove(); |
185 |
> |
assertEquals(Integer.MAX_VALUE, q.remainingCapacity()); |
186 |
> |
assertEquals(SIZE - i, q.size()); |
187 |
> |
assertEquals(i, q.remove()); |
188 |
|
} |
189 |
|
for (int i = 0; i < SIZE; ++i) { |
190 |
< |
assertEquals(NOCAP, q.remainingCapacity()); |
190 |
> |
assertEquals(Integer.MAX_VALUE, q.remainingCapacity()); |
191 |
|
assertEquals(i, q.size()); |
192 |
< |
q.add(new Integer(i)); |
192 |
> |
assertTrue(q.add(i)); |
193 |
|
} |
194 |
|
} |
195 |
|
|
196 |
< |
public void testOfferNull(){ |
197 |
< |
try { |
198 |
< |
PriorityBlockingQueue q = new PriorityBlockingQueue(1); |
148 |
< |
q.offer(null); |
149 |
< |
fail("should throw NPE"); |
150 |
< |
} catch (NullPointerException success) { } |
151 |
< |
} |
152 |
< |
|
196 |
> |
/** |
197 |
> |
* Offer of comparable element succeeds |
198 |
> |
*/ |
199 |
|
public void testOffer() { |
200 |
|
PriorityBlockingQueue q = new PriorityBlockingQueue(1); |
201 |
< |
assertTrue(q.offer(new Integer(0))); |
202 |
< |
assertTrue(q.offer(new Integer(1))); |
201 |
> |
assertTrue(q.offer(zero)); |
202 |
> |
assertTrue(q.offer(one)); |
203 |
|
} |
204 |
|
|
205 |
+ |
/** |
206 |
+ |
* Offer of non-Comparable throws CCE |
207 |
+ |
*/ |
208 |
|
public void testOfferNonComparable() { |
209 |
+ |
PriorityBlockingQueue q = new PriorityBlockingQueue(1); |
210 |
|
try { |
161 |
– |
PriorityBlockingQueue q = new PriorityBlockingQueue(1); |
162 |
– |
q.offer(new Object()); |
211 |
|
q.offer(new Object()); |
212 |
< |
q.offer(new Object()); |
213 |
< |
fail("should throw CCE"); |
212 |
> |
shouldThrow(); |
213 |
> |
} catch (ClassCastException success) { |
214 |
> |
assertTrue(q.isEmpty()); |
215 |
> |
assertEquals(0, q.size()); |
216 |
> |
assertNull(q.poll()); |
217 |
|
} |
167 |
– |
catch(ClassCastException success) {} |
218 |
|
} |
219 |
|
|
220 |
< |
public void testAdd(){ |
220 |
> |
/** |
221 |
> |
* add of comparable succeeds |
222 |
> |
*/ |
223 |
> |
public void testAdd() { |
224 |
|
PriorityBlockingQueue q = new PriorityBlockingQueue(SIZE); |
225 |
|
for (int i = 0; i < SIZE; ++i) { |
226 |
|
assertEquals(i, q.size()); |
228 |
|
} |
229 |
|
} |
230 |
|
|
231 |
< |
public void testAddAll1(){ |
231 |
> |
/** |
232 |
> |
* addAll(this) throws IAE |
233 |
> |
*/ |
234 |
> |
public void testAddAllSelf() { |
235 |
> |
PriorityBlockingQueue q = populatedQueue(SIZE); |
236 |
|
try { |
237 |
< |
PriorityBlockingQueue q = new PriorityBlockingQueue(1); |
238 |
< |
q.addAll(null); |
239 |
< |
fail("Cannot add null collection"); |
183 |
< |
} |
184 |
< |
catch (NullPointerException success) {} |
237 |
> |
q.addAll(q); |
238 |
> |
shouldThrow(); |
239 |
> |
} catch (IllegalArgumentException success) {} |
240 |
|
} |
241 |
< |
public void testAddAll2(){ |
241 |
> |
|
242 |
> |
/** |
243 |
> |
* addAll of a collection with any null elements throws NPE after |
244 |
> |
* possibly adding some elements |
245 |
> |
*/ |
246 |
> |
public void testAddAll3() { |
247 |
> |
PriorityBlockingQueue q = new PriorityBlockingQueue(SIZE); |
248 |
> |
Integer[] ints = new Integer[SIZE]; |
249 |
> |
for (int i = 0; i < SIZE - 1; ++i) |
250 |
> |
ints[i] = new Integer(i); |
251 |
|
try { |
188 |
– |
PriorityBlockingQueue q = new PriorityBlockingQueue(SIZE); |
189 |
– |
Integer[] ints = new Integer[SIZE]; |
252 |
|
q.addAll(Arrays.asList(ints)); |
253 |
< |
fail("Cannot add null elements"); |
254 |
< |
} |
193 |
< |
catch (NullPointerException success) {} |
253 |
> |
shouldThrow(); |
254 |
> |
} catch (NullPointerException success) {} |
255 |
|
} |
256 |
< |
public void testAddAll3(){ |
257 |
< |
try { |
258 |
< |
PriorityBlockingQueue q = new PriorityBlockingQueue(SIZE); |
259 |
< |
Integer[] ints = new Integer[SIZE]; |
260 |
< |
for (int i = 0; i < SIZE-1; ++i) |
261 |
< |
ints[i] = new Integer(i); |
262 |
< |
q.addAll(Arrays.asList(ints)); |
263 |
< |
fail("Cannot add null elements"); |
264 |
< |
} |
265 |
< |
catch (NullPointerException success) {} |
256 |
> |
|
257 |
> |
/** |
258 |
> |
* Queue contains all elements of successful addAll |
259 |
> |
*/ |
260 |
> |
public void testAddAll5() { |
261 |
> |
Integer[] empty = new Integer[0]; |
262 |
> |
Integer[] ints = new Integer[SIZE]; |
263 |
> |
for (int i = SIZE - 1; i >= 0; --i) |
264 |
> |
ints[i] = new Integer(i); |
265 |
> |
PriorityBlockingQueue q = new PriorityBlockingQueue(SIZE); |
266 |
> |
assertFalse(q.addAll(Arrays.asList(empty))); |
267 |
> |
assertTrue(q.addAll(Arrays.asList(ints))); |
268 |
> |
for (int i = 0; i < SIZE; ++i) |
269 |
> |
assertEquals(ints[i], q.poll()); |
270 |
|
} |
271 |
|
|
272 |
< |
public void testAddAll5(){ |
273 |
< |
try { |
274 |
< |
Integer[] empty = new Integer[0]; |
275 |
< |
Integer[] ints = new Integer[SIZE]; |
276 |
< |
for (int i = SIZE-1; i >= 0; --i) |
277 |
< |
ints[i] = new Integer(i); |
278 |
< |
PriorityBlockingQueue q = new PriorityBlockingQueue(SIZE); |
279 |
< |
assertFalse(q.addAll(Arrays.asList(empty))); |
280 |
< |
assertTrue(q.addAll(Arrays.asList(ints))); |
216 |
< |
for (int i = 0; i < SIZE; ++i) |
217 |
< |
assertEquals(ints[i], q.poll()); |
218 |
< |
} |
219 |
< |
finally {} |
220 |
< |
} |
221 |
< |
|
222 |
< |
public void testPutNull() { |
223 |
< |
try { |
224 |
< |
PriorityBlockingQueue q = new PriorityBlockingQueue(SIZE); |
225 |
< |
q.put(null); |
226 |
< |
fail("put should throw NPE"); |
227 |
< |
} |
228 |
< |
catch (NullPointerException success){ |
229 |
< |
} |
230 |
< |
} |
231 |
< |
|
232 |
< |
public void testPut() { |
233 |
< |
try { |
234 |
< |
PriorityBlockingQueue q = new PriorityBlockingQueue(SIZE); |
235 |
< |
for (int i = 0; i < SIZE; ++i) { |
236 |
< |
Integer I = new Integer(i); |
237 |
< |
q.put(I); |
238 |
< |
assertTrue(q.contains(I)); |
239 |
< |
} |
240 |
< |
assertEquals(SIZE, q.size()); |
241 |
< |
} |
242 |
< |
finally { |
272 |
> |
/** |
273 |
> |
* all elements successfully put are contained |
274 |
> |
*/ |
275 |
> |
public void testPut() { |
276 |
> |
PriorityBlockingQueue q = new PriorityBlockingQueue(SIZE); |
277 |
> |
for (int i = 0; i < SIZE; ++i) { |
278 |
> |
Integer x = new Integer(i); |
279 |
> |
q.put(x); |
280 |
> |
assertTrue(q.contains(x)); |
281 |
|
} |
282 |
+ |
assertEquals(SIZE, q.size()); |
283 |
|
} |
284 |
|
|
285 |
< |
public void testPutWithTake() { |
285 |
> |
/** |
286 |
> |
* put doesn't block waiting for take |
287 |
> |
*/ |
288 |
> |
public void testPutWithTake() throws InterruptedException { |
289 |
|
final PriorityBlockingQueue q = new PriorityBlockingQueue(2); |
290 |
< |
Thread t = new Thread(new Runnable() { |
291 |
< |
public void run(){ |
292 |
< |
int added = 0; |
293 |
< |
try { |
294 |
< |
q.put(new Integer(0)); |
295 |
< |
++added; |
296 |
< |
q.put(new Integer(0)); |
297 |
< |
++added; |
298 |
< |
q.put(new Integer(0)); |
299 |
< |
++added; |
258 |
< |
q.put(new Integer(0)); |
259 |
< |
++added; |
260 |
< |
threadAssertTrue(added == 4); |
261 |
< |
} finally { |
262 |
< |
} |
263 |
< |
} |
264 |
< |
}); |
265 |
< |
try { |
266 |
< |
t.start(); |
267 |
< |
Thread.sleep(SHORT_DELAY_MS); |
268 |
< |
q.take(); |
269 |
< |
t.interrupt(); |
270 |
< |
t.join(); |
271 |
< |
} catch (Exception e){ |
272 |
< |
fail("Unexpected exception"); |
273 |
< |
} |
290 |
> |
final int size = 4; |
291 |
> |
Thread t = newStartedThread(new CheckedRunnable() { |
292 |
> |
public void realRun() { |
293 |
> |
for (int i = 0; i < size; i++) |
294 |
> |
q.put(new Integer(0)); |
295 |
> |
}}); |
296 |
> |
|
297 |
> |
awaitTermination(t); |
298 |
> |
assertEquals(size, q.size()); |
299 |
> |
q.take(); |
300 |
|
} |
301 |
|
|
302 |
< |
public void testTimedOffer() { |
302 |
> |
/** |
303 |
> |
* timed offer does not time out |
304 |
> |
*/ |
305 |
> |
public void testTimedOffer() throws InterruptedException { |
306 |
|
final PriorityBlockingQueue q = new PriorityBlockingQueue(2); |
307 |
< |
Thread t = new Thread(new Runnable() { |
308 |
< |
public void run(){ |
309 |
< |
try { |
310 |
< |
q.put(new Integer(0)); |
311 |
< |
q.put(new Integer(0)); |
312 |
< |
threadAssertTrue(q.offer(new Integer(0), SHORT_DELAY_MS, TimeUnit.MILLISECONDS)); |
313 |
< |
threadAssertTrue(q.offer(new Integer(0), LONG_DELAY_MS, TimeUnit.MILLISECONDS)); |
285 |
< |
} finally { } |
286 |
< |
} |
287 |
< |
}); |
288 |
< |
|
289 |
< |
try { |
290 |
< |
t.start(); |
291 |
< |
Thread.sleep(SMALL_DELAY_MS); |
292 |
< |
t.interrupt(); |
293 |
< |
t.join(); |
294 |
< |
} catch (Exception e){ |
295 |
< |
fail("Unexpected exception"); |
296 |
< |
} |
297 |
< |
} |
307 |
> |
Thread t = newStartedThread(new CheckedRunnable() { |
308 |
> |
public void realRun() { |
309 |
> |
q.put(new Integer(0)); |
310 |
> |
q.put(new Integer(0)); |
311 |
> |
assertTrue(q.offer(new Integer(0), SHORT_DELAY_MS, MILLISECONDS)); |
312 |
> |
assertTrue(q.offer(new Integer(0), LONG_DELAY_MS, MILLISECONDS)); |
313 |
> |
}}); |
314 |
|
|
315 |
< |
public void testTake(){ |
300 |
< |
try { |
301 |
< |
PriorityBlockingQueue q = populatedQueue(SIZE); |
302 |
< |
for (int i = 0; i < SIZE; ++i) { |
303 |
< |
assertEquals(i, ((Integer)q.take()).intValue()); |
304 |
< |
} |
305 |
< |
} catch (InterruptedException e){ |
306 |
< |
fail("Unexpected exception"); |
307 |
< |
} |
315 |
> |
awaitTermination(t); |
316 |
|
} |
317 |
|
|
318 |
< |
public void testTakeFromEmpty() { |
319 |
< |
final PriorityBlockingQueue q = new PriorityBlockingQueue(2); |
320 |
< |
Thread t = new Thread(new Runnable() { |
321 |
< |
public void run(){ |
322 |
< |
try { |
323 |
< |
q.take(); |
324 |
< |
threadFail("Should block"); |
317 |
< |
} catch (InterruptedException success){ } |
318 |
< |
} |
319 |
< |
}); |
320 |
< |
try { |
321 |
< |
t.start(); |
322 |
< |
Thread.sleep(SHORT_DELAY_MS); |
323 |
< |
t.interrupt(); |
324 |
< |
t.join(); |
325 |
< |
} catch (Exception e){ |
326 |
< |
fail("Unexpected exception"); |
318 |
> |
/** |
319 |
> |
* take retrieves elements in priority order |
320 |
> |
*/ |
321 |
> |
public void testTake() throws InterruptedException { |
322 |
> |
PriorityBlockingQueue q = populatedQueue(SIZE); |
323 |
> |
for (int i = 0; i < SIZE; ++i) { |
324 |
> |
assertEquals(i, q.take()); |
325 |
|
} |
326 |
|
} |
327 |
|
|
328 |
< |
public void testBlockingTake(){ |
329 |
< |
Thread t = new Thread(new Runnable() { |
330 |
< |
public void run() { |
331 |
< |
try { |
332 |
< |
PriorityBlockingQueue q = populatedQueue(SIZE); |
333 |
< |
for (int i = 0; i < SIZE; ++i) { |
334 |
< |
threadAssertEquals(i, ((Integer)q.take()).intValue()); |
335 |
< |
} |
336 |
< |
q.take(); |
337 |
< |
threadFail("take should block"); |
338 |
< |
} catch (InterruptedException success){ |
341 |
< |
} |
342 |
< |
}}); |
343 |
< |
t.start(); |
344 |
< |
try { |
345 |
< |
Thread.sleep(SHORT_DELAY_MS); |
346 |
< |
t.interrupt(); |
347 |
< |
t.join(); |
348 |
< |
} |
349 |
< |
catch (InterruptedException ie) { |
350 |
< |
fail("Unexpected exception"); |
351 |
< |
} |
352 |
< |
} |
328 |
> |
/** |
329 |
> |
* Take removes existing elements until empty, then blocks interruptibly |
330 |
> |
*/ |
331 |
> |
public void testBlockingTake() throws InterruptedException { |
332 |
> |
final PriorityBlockingQueue q = populatedQueue(SIZE); |
333 |
> |
final CountDownLatch pleaseInterrupt = new CountDownLatch(1); |
334 |
> |
Thread t = newStartedThread(new CheckedRunnable() { |
335 |
> |
public void realRun() throws InterruptedException { |
336 |
> |
for (int i = 0; i < SIZE; ++i) { |
337 |
> |
assertEquals(i, q.take()); |
338 |
> |
} |
339 |
|
|
340 |
+ |
Thread.currentThread().interrupt(); |
341 |
+ |
try { |
342 |
+ |
q.take(); |
343 |
+ |
shouldThrow(); |
344 |
+ |
} catch (InterruptedException success) {} |
345 |
+ |
assertFalse(Thread.interrupted()); |
346 |
+ |
|
347 |
+ |
pleaseInterrupt.countDown(); |
348 |
+ |
try { |
349 |
+ |
q.take(); |
350 |
+ |
shouldThrow(); |
351 |
+ |
} catch (InterruptedException success) {} |
352 |
+ |
assertFalse(Thread.interrupted()); |
353 |
+ |
}}); |
354 |
+ |
|
355 |
+ |
await(pleaseInterrupt); |
356 |
+ |
assertThreadStaysAlive(t); |
357 |
+ |
t.interrupt(); |
358 |
+ |
awaitTermination(t); |
359 |
+ |
} |
360 |
|
|
361 |
< |
public void testPoll(){ |
361 |
> |
/** |
362 |
> |
* poll succeeds unless empty |
363 |
> |
*/ |
364 |
> |
public void testPoll() { |
365 |
|
PriorityBlockingQueue q = populatedQueue(SIZE); |
366 |
|
for (int i = 0; i < SIZE; ++i) { |
367 |
< |
assertEquals(i, ((Integer)q.poll()).intValue()); |
367 |
> |
assertEquals(i, q.poll()); |
368 |
|
} |
369 |
< |
assertNull(q.poll()); |
369 |
> |
assertNull(q.poll()); |
370 |
|
} |
371 |
|
|
372 |
< |
public void testTimedPoll0() { |
373 |
< |
try { |
374 |
< |
PriorityBlockingQueue q = populatedQueue(SIZE); |
375 |
< |
for (int i = 0; i < SIZE; ++i) { |
376 |
< |
assertEquals(i, ((Integer)q.poll(0, TimeUnit.MILLISECONDS)).intValue()); |
377 |
< |
} |
378 |
< |
assertNull(q.poll(0, TimeUnit.MILLISECONDS)); |
379 |
< |
} catch (InterruptedException e){ |
380 |
< |
fail("Unexpected exception"); |
372 |
< |
} |
372 |
> |
/** |
373 |
> |
* timed poll with zero timeout succeeds when non-empty, else times out |
374 |
> |
*/ |
375 |
> |
public void testTimedPoll0() throws InterruptedException { |
376 |
> |
PriorityBlockingQueue q = populatedQueue(SIZE); |
377 |
> |
for (int i = 0; i < SIZE; ++i) { |
378 |
> |
assertEquals(i, q.poll(0, MILLISECONDS)); |
379 |
> |
} |
380 |
> |
assertNull(q.poll(0, MILLISECONDS)); |
381 |
|
} |
382 |
|
|
383 |
< |
public void testTimedPoll() { |
384 |
< |
try { |
385 |
< |
PriorityBlockingQueue q = populatedQueue(SIZE); |
386 |
< |
for (int i = 0; i < SIZE; ++i) { |
387 |
< |
assertEquals(i, ((Integer)q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS)).intValue()); |
388 |
< |
} |
389 |
< |
assertNull(q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS)); |
390 |
< |
} catch (InterruptedException e){ |
391 |
< |
fail("Unexpected exception"); |
392 |
< |
} |
393 |
< |
} |
394 |
< |
|
395 |
< |
public void testInterruptedTimedPoll(){ |
396 |
< |
Thread t = new Thread(new Runnable() { |
389 |
< |
public void run() { |
390 |
< |
try { |
391 |
< |
PriorityBlockingQueue q = populatedQueue(SIZE); |
392 |
< |
for (int i = 0; i < SIZE; ++i) { |
393 |
< |
threadAssertEquals(i, ((Integer)q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS)).intValue()); |
394 |
< |
} |
395 |
< |
threadAssertNull(q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS)); |
396 |
< |
} catch (InterruptedException success){ |
397 |
< |
} |
398 |
< |
}}); |
399 |
< |
t.start(); |
400 |
< |
try { |
401 |
< |
Thread.sleep(SHORT_DELAY_MS); |
402 |
< |
t.interrupt(); |
403 |
< |
t.join(); |
404 |
< |
} |
405 |
< |
catch (InterruptedException ie) { |
406 |
< |
fail("Unexpected exception"); |
407 |
< |
} |
383 |
> |
/** |
384 |
> |
* timed poll with nonzero timeout succeeds when non-empty, else times out |
385 |
> |
*/ |
386 |
> |
public void testTimedPoll() throws InterruptedException { |
387 |
> |
PriorityBlockingQueue<Integer> q = populatedQueue(SIZE); |
388 |
> |
for (int i = 0; i < SIZE; ++i) { |
389 |
> |
long startTime = System.nanoTime(); |
390 |
> |
assertEquals(i, (int) q.poll(LONG_DELAY_MS, MILLISECONDS)); |
391 |
> |
assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS); |
392 |
> |
} |
393 |
> |
long startTime = System.nanoTime(); |
394 |
> |
assertNull(q.poll(timeoutMillis(), MILLISECONDS)); |
395 |
> |
assertTrue(millisElapsedSince(startTime) >= timeoutMillis()); |
396 |
> |
checkEmpty(q); |
397 |
|
} |
398 |
|
|
399 |
< |
public void testTimedPollWithOffer(){ |
400 |
< |
final PriorityBlockingQueue q = new PriorityBlockingQueue(2); |
401 |
< |
Thread t = new Thread(new Runnable() { |
402 |
< |
public void run(){ |
403 |
< |
try { |
404 |
< |
threadAssertNull(q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS)); |
405 |
< |
q.poll(LONG_DELAY_MS, TimeUnit.MILLISECONDS); |
406 |
< |
q.poll(LONG_DELAY_MS, TimeUnit.MILLISECONDS); |
407 |
< |
threadFail("Should block"); |
408 |
< |
} catch (InterruptedException success) { } |
399 |
> |
/** |
400 |
> |
* Interrupted timed poll throws InterruptedException instead of |
401 |
> |
* returning timeout status |
402 |
> |
*/ |
403 |
> |
public void testInterruptedTimedPoll() throws InterruptedException { |
404 |
> |
final BlockingQueue<Integer> q = populatedQueue(SIZE); |
405 |
> |
final CountDownLatch aboutToWait = new CountDownLatch(1); |
406 |
> |
Thread t = newStartedThread(new CheckedRunnable() { |
407 |
> |
public void realRun() throws InterruptedException { |
408 |
> |
long startTime = System.nanoTime(); |
409 |
> |
for (int i = 0; i < SIZE; ++i) { |
410 |
> |
assertEquals(i, (int) q.poll(LONG_DELAY_MS, MILLISECONDS)); |
411 |
|
} |
412 |
< |
}); |
413 |
< |
try { |
414 |
< |
t.start(); |
415 |
< |
Thread.sleep(SMALL_DELAY_MS); |
416 |
< |
assertTrue(q.offer(new Integer(0), SHORT_DELAY_MS, TimeUnit.MILLISECONDS)); |
417 |
< |
t.interrupt(); |
418 |
< |
t.join(); |
419 |
< |
} catch (Exception e){ |
429 |
< |
fail("Unexpected exception"); |
430 |
< |
} |
431 |
< |
} |
412 |
> |
aboutToWait.countDown(); |
413 |
> |
try { |
414 |
> |
q.poll(LONG_DELAY_MS, MILLISECONDS); |
415 |
> |
shouldThrow(); |
416 |
> |
} catch (InterruptedException success) { |
417 |
> |
assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS); |
418 |
> |
} |
419 |
> |
}}); |
420 |
|
|
421 |
+ |
await(aboutToWait); |
422 |
+ |
waitForThreadToEnterWaitState(t); |
423 |
+ |
t.interrupt(); |
424 |
+ |
awaitTermination(t); |
425 |
+ |
} |
426 |
|
|
427 |
< |
public void testPeek(){ |
427 |
> |
/** |
428 |
> |
* peek returns next element, or null if empty |
429 |
> |
*/ |
430 |
> |
public void testPeek() { |
431 |
|
PriorityBlockingQueue q = populatedQueue(SIZE); |
432 |
|
for (int i = 0; i < SIZE; ++i) { |
433 |
< |
assertEquals(i, ((Integer)q.peek()).intValue()); |
434 |
< |
q.poll(); |
433 |
> |
assertEquals(i, q.peek()); |
434 |
> |
assertEquals(i, q.poll()); |
435 |
|
assertTrue(q.peek() == null || |
436 |
< |
i != ((Integer)q.peek()).intValue()); |
436 |
> |
!q.peek().equals(i)); |
437 |
|
} |
438 |
< |
assertNull(q.peek()); |
438 |
> |
assertNull(q.peek()); |
439 |
|
} |
440 |
|
|
441 |
< |
public void testElement(){ |
441 |
> |
/** |
442 |
> |
* element returns next element, or throws NSEE if empty |
443 |
> |
*/ |
444 |
> |
public void testElement() { |
445 |
|
PriorityBlockingQueue q = populatedQueue(SIZE); |
446 |
|
for (int i = 0; i < SIZE; ++i) { |
447 |
< |
assertEquals(i, ((Integer)q.element()).intValue()); |
448 |
< |
q.poll(); |
447 |
> |
assertEquals(i, q.element()); |
448 |
> |
assertEquals(i, q.poll()); |
449 |
|
} |
450 |
|
try { |
451 |
|
q.element(); |
452 |
< |
fail("no such element"); |
453 |
< |
} |
455 |
< |
catch (NoSuchElementException success) {} |
452 |
> |
shouldThrow(); |
453 |
> |
} catch (NoSuchElementException success) {} |
454 |
|
} |
455 |
|
|
456 |
< |
public void testRemove(){ |
456 |
> |
/** |
457 |
> |
* remove removes next element, or throws NSEE if empty |
458 |
> |
*/ |
459 |
> |
public void testRemove() { |
460 |
|
PriorityBlockingQueue q = populatedQueue(SIZE); |
461 |
|
for (int i = 0; i < SIZE; ++i) { |
462 |
< |
assertEquals(i, ((Integer)q.remove()).intValue()); |
462 |
> |
assertEquals(i, q.remove()); |
463 |
|
} |
464 |
|
try { |
465 |
|
q.remove(); |
466 |
< |
fail("remove should throw"); |
467 |
< |
} catch (NoSuchElementException success){ |
467 |
< |
} |
466 |
> |
shouldThrow(); |
467 |
> |
} catch (NoSuchElementException success) {} |
468 |
|
} |
469 |
|
|
470 |
< |
public void testRemoveElement(){ |
471 |
< |
PriorityBlockingQueue q = populatedQueue(SIZE); |
472 |
< |
for (int i = 1; i < SIZE; i+=2) { |
473 |
< |
assertTrue(q.remove(new Integer(i))); |
474 |
< |
} |
475 |
< |
for (int i = 0; i < SIZE; i+=2) { |
476 |
< |
assertTrue(q.remove(new Integer(i))); |
477 |
< |
assertFalse(q.remove(new Integer(i+1))); |
478 |
< |
} |
479 |
< |
assertTrue(q.isEmpty()); |
480 |
< |
} |
481 |
< |
|
482 |
< |
public void testContains(){ |
470 |
> |
/** |
471 |
> |
* contains(x) reports true when elements added but not yet removed |
472 |
> |
*/ |
473 |
> |
public void testContains() { |
474 |
|
PriorityBlockingQueue q = populatedQueue(SIZE); |
475 |
|
for (int i = 0; i < SIZE; ++i) { |
476 |
|
assertTrue(q.contains(new Integer(i))); |
479 |
|
} |
480 |
|
} |
481 |
|
|
482 |
< |
public void testClear(){ |
482 |
> |
/** |
483 |
> |
* clear removes all elements |
484 |
> |
*/ |
485 |
> |
public void testClear() { |
486 |
|
PriorityBlockingQueue q = populatedQueue(SIZE); |
487 |
|
q.clear(); |
488 |
|
assertTrue(q.isEmpty()); |
489 |
|
assertEquals(0, q.size()); |
490 |
< |
assertEquals(NOCAP, q.remainingCapacity()); |
497 |
< |
q.add(new Integer(1)); |
490 |
> |
q.add(one); |
491 |
|
assertFalse(q.isEmpty()); |
492 |
+ |
assertTrue(q.contains(one)); |
493 |
|
q.clear(); |
494 |
|
assertTrue(q.isEmpty()); |
495 |
|
} |
496 |
|
|
497 |
< |
public void testContainsAll(){ |
497 |
> |
/** |
498 |
> |
* containsAll(c) is true when c contains a subset of elements |
499 |
> |
*/ |
500 |
> |
public void testContainsAll() { |
501 |
|
PriorityBlockingQueue q = populatedQueue(SIZE); |
502 |
|
PriorityBlockingQueue p = new PriorityBlockingQueue(SIZE); |
503 |
|
for (int i = 0; i < SIZE; ++i) { |
508 |
|
assertTrue(p.containsAll(q)); |
509 |
|
} |
510 |
|
|
511 |
< |
public void testRetainAll(){ |
511 |
> |
/** |
512 |
> |
* retainAll(c) retains only those elements of c and reports true if changed |
513 |
> |
*/ |
514 |
> |
public void testRetainAll() { |
515 |
|
PriorityBlockingQueue q = populatedQueue(SIZE); |
516 |
|
PriorityBlockingQueue p = populatedQueue(SIZE); |
517 |
|
for (int i = 0; i < SIZE; ++i) { |
522 |
|
assertTrue(changed); |
523 |
|
|
524 |
|
assertTrue(q.containsAll(p)); |
525 |
< |
assertEquals(SIZE-i, q.size()); |
525 |
> |
assertEquals(SIZE - i, q.size()); |
526 |
|
p.remove(); |
527 |
|
} |
528 |
|
} |
529 |
|
|
530 |
< |
public void testRemoveAll(){ |
530 |
> |
/** |
531 |
> |
* removeAll(c) removes only those elements of c and reports true if changed |
532 |
> |
*/ |
533 |
> |
public void testRemoveAll() { |
534 |
|
for (int i = 1; i < SIZE; ++i) { |
535 |
|
PriorityBlockingQueue q = populatedQueue(SIZE); |
536 |
|
PriorityBlockingQueue p = populatedQueue(i); |
537 |
|
assertTrue(q.removeAll(p)); |
538 |
< |
assertEquals(SIZE-i, q.size()); |
538 |
> |
assertEquals(SIZE - i, q.size()); |
539 |
|
for (int j = 0; j < i; ++j) { |
540 |
< |
Integer I = (Integer)(p.remove()); |
541 |
< |
assertFalse(q.contains(I)); |
540 |
> |
Integer x = (Integer)(p.remove()); |
541 |
> |
assertFalse(q.contains(x)); |
542 |
|
} |
543 |
|
} |
544 |
|
} |
545 |
|
|
546 |
< |
public void testToArray(){ |
546 |
> |
/** |
547 |
> |
* toArray contains all elements |
548 |
> |
*/ |
549 |
> |
public void testToArray() throws InterruptedException { |
550 |
|
PriorityBlockingQueue q = populatedQueue(SIZE); |
551 |
< |
Object[] o = q.toArray(); |
551 |
> |
Object[] o = q.toArray(); |
552 |
|
Arrays.sort(o); |
553 |
< |
try { |
554 |
< |
for(int i = 0; i < o.length; i++) |
549 |
< |
assertEquals(o[i], q.take()); |
550 |
< |
} catch (InterruptedException e){ |
551 |
< |
fail("Unexpected exception"); |
552 |
< |
} |
553 |
> |
for (int i = 0; i < o.length; i++) |
554 |
> |
assertSame(o[i], q.take()); |
555 |
|
} |
556 |
|
|
557 |
< |
public void testToArray2(){ |
558 |
< |
PriorityBlockingQueue q = populatedQueue(SIZE); |
559 |
< |
Integer[] ints = new Integer[SIZE]; |
560 |
< |
ints = (Integer[])q.toArray(ints); |
557 |
> |
/** |
558 |
> |
* toArray(a) contains all elements |
559 |
> |
*/ |
560 |
> |
public void testToArray2() throws InterruptedException { |
561 |
> |
PriorityBlockingQueue<Integer> q = populatedQueue(SIZE); |
562 |
> |
Integer[] ints = new Integer[SIZE]; |
563 |
> |
Integer[] array = q.toArray(ints); |
564 |
> |
assertSame(ints, array); |
565 |
|
Arrays.sort(ints); |
566 |
< |
try { |
567 |
< |
for(int i = 0; i < ints.length; i++) |
568 |
< |
assertEquals(ints[i], q.take()); |
569 |
< |
} catch (InterruptedException e){ |
570 |
< |
fail("Unexpected exception"); |
571 |
< |
} |
572 |
< |
} |
573 |
< |
|
574 |
< |
public void testIterator(){ |
575 |
< |
PriorityBlockingQueue q = populatedQueue(SIZE); |
576 |
< |
int i = 0; |
577 |
< |
Iterator it = q.iterator(); |
578 |
< |
while(it.hasNext()) { |
566 |
> |
for (int i = 0; i < ints.length; i++) |
567 |
> |
assertSame(ints[i], q.take()); |
568 |
> |
} |
569 |
> |
|
570 |
> |
/** |
571 |
> |
* toArray(incompatible array type) throws ArrayStoreException |
572 |
> |
*/ |
573 |
> |
public void testToArray1_BadArg() { |
574 |
> |
PriorityBlockingQueue q = populatedQueue(SIZE); |
575 |
> |
try { |
576 |
> |
q.toArray(new String[10]); |
577 |
> |
shouldThrow(); |
578 |
> |
} catch (ArrayStoreException success) {} |
579 |
> |
} |
580 |
> |
|
581 |
> |
/** |
582 |
> |
* iterator iterates through all elements |
583 |
> |
*/ |
584 |
> |
public void testIterator() { |
585 |
> |
PriorityBlockingQueue q = populatedQueue(SIZE); |
586 |
> |
Iterator it = q.iterator(); |
587 |
> |
int i; |
588 |
> |
for (i = 0; it.hasNext(); i++) |
589 |
|
assertTrue(q.contains(it.next())); |
574 |
– |
++i; |
575 |
– |
} |
590 |
|
assertEquals(i, SIZE); |
591 |
+ |
assertIteratorExhausted(it); |
592 |
|
} |
593 |
|
|
594 |
< |
public void testIteratorRemove () { |
594 |
> |
/** |
595 |
> |
* iterator of empty collection has no elements |
596 |
> |
*/ |
597 |
> |
public void testEmptyIterator() { |
598 |
> |
assertIteratorExhausted(new PriorityBlockingQueue().iterator()); |
599 |
> |
} |
600 |
|
|
601 |
+ |
/** |
602 |
+ |
* iterator.remove removes current element |
603 |
+ |
*/ |
604 |
+ |
public void testIteratorRemove() { |
605 |
|
final PriorityBlockingQueue q = new PriorityBlockingQueue(3); |
582 |
– |
|
606 |
|
q.add(new Integer(2)); |
607 |
|
q.add(new Integer(1)); |
608 |
|
q.add(new Integer(3)); |
617 |
|
assertFalse(it.hasNext()); |
618 |
|
} |
619 |
|
|
620 |
< |
|
621 |
< |
public void testToString(){ |
620 |
> |
/** |
621 |
> |
* toString contains toStrings of elements |
622 |
> |
*/ |
623 |
> |
public void testToString() { |
624 |
|
PriorityBlockingQueue q = populatedQueue(SIZE); |
625 |
|
String s = q.toString(); |
626 |
|
for (int i = 0; i < SIZE; ++i) { |
627 |
< |
assertTrue(s.indexOf(String.valueOf(i)) >= 0); |
627 |
> |
assertTrue(s.contains(String.valueOf(i))); |
628 |
|
} |
629 |
< |
} |
629 |
> |
} |
630 |
|
|
631 |
+ |
/** |
632 |
+ |
* timed poll transfers elements across Executor tasks |
633 |
+ |
*/ |
634 |
|
public void testPollInExecutor() { |
607 |
– |
|
635 |
|
final PriorityBlockingQueue q = new PriorityBlockingQueue(2); |
636 |
+ |
final CheckedBarrier threadsStarted = new CheckedBarrier(2); |
637 |
+ |
final ExecutorService executor = Executors.newFixedThreadPool(2); |
638 |
+ |
try (PoolCleaner cleaner = cleaner(executor)) { |
639 |
+ |
executor.execute(new CheckedRunnable() { |
640 |
+ |
public void realRun() throws InterruptedException { |
641 |
+ |
assertNull(q.poll()); |
642 |
+ |
threadsStarted.await(); |
643 |
+ |
assertSame(one, q.poll(LONG_DELAY_MS, MILLISECONDS)); |
644 |
+ |
checkEmpty(q); |
645 |
+ |
}}); |
646 |
|
|
647 |
< |
ExecutorService executor = Executors.newFixedThreadPool(2); |
647 |
> |
executor.execute(new CheckedRunnable() { |
648 |
> |
public void realRun() throws InterruptedException { |
649 |
> |
threadsStarted.await(); |
650 |
> |
q.put(one); |
651 |
> |
}}); |
652 |
> |
} |
653 |
> |
} |
654 |
|
|
655 |
< |
executor.execute(new Runnable() { |
656 |
< |
public void run() { |
657 |
< |
threadAssertNull(q.poll()); |
658 |
< |
try { |
659 |
< |
threadAssertTrue(null != q.poll(MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS)); |
660 |
< |
threadAssertTrue(q.isEmpty()); |
661 |
< |
} |
662 |
< |
catch (InterruptedException e) { |
663 |
< |
threadFail("should not be interrupted"); |
664 |
< |
} |
665 |
< |
} |
666 |
< |
}); |
655 |
> |
/** |
656 |
> |
* A deserialized serialized queue has same elements |
657 |
> |
*/ |
658 |
> |
public void testSerialization() throws Exception { |
659 |
> |
Queue x = populatedQueue(SIZE); |
660 |
> |
Queue y = serialClone(x); |
661 |
> |
|
662 |
> |
assertNotSame(x, y); |
663 |
> |
assertEquals(x.size(), y.size()); |
664 |
> |
while (!x.isEmpty()) { |
665 |
> |
assertFalse(y.isEmpty()); |
666 |
> |
assertEquals(x.remove(), y.remove()); |
667 |
> |
} |
668 |
> |
assertTrue(y.isEmpty()); |
669 |
> |
} |
670 |
|
|
671 |
< |
executor.execute(new Runnable() { |
672 |
< |
public void run() { |
673 |
< |
try { |
674 |
< |
Thread.sleep(SMALL_DELAY_MS); |
675 |
< |
q.put(new Integer(1)); |
676 |
< |
} |
677 |
< |
catch (InterruptedException e) { |
678 |
< |
threadFail("should not be interrupted"); |
679 |
< |
} |
680 |
< |
} |
681 |
< |
}); |
682 |
< |
|
683 |
< |
joinPool(executor); |
671 |
> |
/** |
672 |
> |
* drainTo(c) empties queue into another collection c |
673 |
> |
*/ |
674 |
> |
public void testDrainTo() { |
675 |
> |
PriorityBlockingQueue q = populatedQueue(SIZE); |
676 |
> |
ArrayList l = new ArrayList(); |
677 |
> |
q.drainTo(l); |
678 |
> |
assertEquals(0, q.size()); |
679 |
> |
assertEquals(SIZE, l.size()); |
680 |
> |
for (int i = 0; i < SIZE; ++i) |
681 |
> |
assertEquals(l.get(i), new Integer(i)); |
682 |
> |
q.add(zero); |
683 |
> |
q.add(one); |
684 |
> |
assertFalse(q.isEmpty()); |
685 |
> |
assertTrue(q.contains(zero)); |
686 |
> |
assertTrue(q.contains(one)); |
687 |
> |
l.clear(); |
688 |
> |
q.drainTo(l); |
689 |
> |
assertEquals(0, q.size()); |
690 |
> |
assertEquals(2, l.size()); |
691 |
> |
for (int i = 0; i < 2; ++i) |
692 |
> |
assertEquals(l.get(i), new Integer(i)); |
693 |
> |
} |
694 |
> |
|
695 |
> |
/** |
696 |
> |
* drainTo empties queue |
697 |
> |
*/ |
698 |
> |
public void testDrainToWithActivePut() throws InterruptedException { |
699 |
> |
final PriorityBlockingQueue q = populatedQueue(SIZE); |
700 |
> |
Thread t = new Thread(new CheckedRunnable() { |
701 |
> |
public void realRun() { |
702 |
> |
q.put(new Integer(SIZE + 1)); |
703 |
> |
}}); |
704 |
|
|
705 |
+ |
t.start(); |
706 |
+ |
ArrayList l = new ArrayList(); |
707 |
+ |
q.drainTo(l); |
708 |
+ |
assertTrue(l.size() >= SIZE); |
709 |
+ |
for (int i = 0; i < SIZE; ++i) |
710 |
+ |
assertEquals(l.get(i), new Integer(i)); |
711 |
+ |
t.join(); |
712 |
+ |
assertTrue(q.size() + l.size() >= SIZE); |
713 |
|
} |
714 |
|
|
715 |
< |
public void testSerialization() { |
716 |
< |
PriorityBlockingQueue q = populatedQueue(SIZE); |
717 |
< |
try { |
718 |
< |
ByteArrayOutputStream bout = new ByteArrayOutputStream(10000); |
719 |
< |
ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout)); |
720 |
< |
out.writeObject(q); |
721 |
< |
out.close(); |
722 |
< |
|
723 |
< |
ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray()); |
724 |
< |
ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin)); |
725 |
< |
PriorityBlockingQueue r = (PriorityBlockingQueue)in.readObject(); |
726 |
< |
assertEquals(q.size(), r.size()); |
727 |
< |
while (!q.isEmpty()) |
728 |
< |
assertEquals(q.remove(), r.remove()); |
729 |
< |
} catch(Exception e){ |
730 |
< |
fail("unexpected exception"); |
715 |
> |
/** |
716 |
> |
* drainTo(c, n) empties first min(n, size) elements of queue into c |
717 |
> |
*/ |
718 |
> |
public void testDrainToN() { |
719 |
> |
PriorityBlockingQueue q = new PriorityBlockingQueue(SIZE * 2); |
720 |
> |
for (int i = 0; i < SIZE + 2; ++i) { |
721 |
> |
for (int j = 0; j < SIZE; j++) |
722 |
> |
assertTrue(q.offer(new Integer(j))); |
723 |
> |
ArrayList l = new ArrayList(); |
724 |
> |
q.drainTo(l, i); |
725 |
> |
int k = (i < SIZE) ? i : SIZE; |
726 |
> |
assertEquals(k, l.size()); |
727 |
> |
assertEquals(SIZE - k, q.size()); |
728 |
> |
for (int j = 0; j < k; ++j) |
729 |
> |
assertEquals(l.get(j), new Integer(j)); |
730 |
> |
do {} while (q.poll() != null); |
731 |
> |
} |
732 |
> |
} |
733 |
> |
|
734 |
> |
/** |
735 |
> |
* remove(null), contains(null) always return false |
736 |
> |
*/ |
737 |
> |
public void testNeverContainsNull() { |
738 |
> |
Collection<?>[] qs = { |
739 |
> |
new PriorityBlockingQueue<Object>(), |
740 |
> |
populatedQueue(2), |
741 |
> |
}; |
742 |
> |
|
743 |
> |
for (Collection<?> q : qs) { |
744 |
> |
assertFalse(q.contains(null)); |
745 |
> |
assertFalse(q.remove(null)); |
746 |
|
} |
747 |
|
} |
748 |
|
|