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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 static java.util.concurrent.TimeUnit.MILLISECONDS; |
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import java.io.*; |
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|
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public class LinkedBlockingQueueTest extends TestCase { |
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public class LinkedBlockingQueueTest extends JSR166TestCase { |
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|
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private static int N = 10; |
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private static long SHORT_DELAY_MS = 100; |
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private static long MEDIUM_DELAY_MS = 1000; |
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private static long LONG_DELAY_MS = 10000; |
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public static class Unbounded extends BlockingQueueTest { |
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protected BlockingQueue emptyCollection() { |
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return new LinkedBlockingQueue(); |
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} |
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} |
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|
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public static class Bounded extends BlockingQueueTest { |
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protected BlockingQueue emptyCollection() { |
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return new LinkedBlockingQueue(20); |
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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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junit.textui.TestRunner.run(suite()); |
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} |
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|
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public static Test suite() { |
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return new TestSuite(LinkedBlockingQueueTest.class); |
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return newTestSuite(LinkedBlockingQueueTest.class, |
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new Unbounded().testSuite(), |
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new Bounded().testSuite()); |
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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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*/ |
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private LinkedBlockingQueue fullQueue(int n) { |
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LinkedBlockingQueue q = new LinkedBlockingQueue(n); |
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private LinkedBlockingQueue<Integer> populatedQueue(int n) { |
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LinkedBlockingQueue<Integer> q = |
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new LinkedBlockingQueue<Integer>(n); |
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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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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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assertEquals(n, q.size()); |
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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(N, new LinkedBlockingQueue(N).remainingCapacity()); |
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|
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/** |
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* A new queue has the indicated capacity, or Integer.MAX_VALUE if |
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* none given |
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*/ |
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public void testConstructor1() { |
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assertEquals(SIZE, new LinkedBlockingQueue(SIZE).remainingCapacity()); |
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assertEquals(Integer.MAX_VALUE, new LinkedBlockingQueue().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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LinkedBlockingQueue q = new LinkedBlockingQueue(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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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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LinkedBlockingQueue q = new LinkedBlockingQueue(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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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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try { |
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Integer[] ints = new Integer[N]; |
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Integer[] ints = new Integer[SIZE]; |
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LinkedBlockingQueue q = new LinkedBlockingQueue(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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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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/** |
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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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try { |
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Integer[] ints = new Integer[N]; |
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for (int i = 0; i < N-1; ++i) |
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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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LinkedBlockingQueue q = new LinkedBlockingQueue(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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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[N]; |
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for (int i = 0; i < N; ++i) |
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ints[i] = new Integer(i); |
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LinkedBlockingQueue q = new LinkedBlockingQueue(Arrays.asList(ints)); |
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for (int i = 0; i < N; ++i) |
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assertEquals(ints[i], q.poll()); |
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} |
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finally {} |
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/** |
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* Queue contains all elements of collection used to initialize |
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*/ |
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public void testConstructor6() { |
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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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LinkedBlockingQueue q = new LinkedBlockingQueue(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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|
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/** |
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* Queue transitions from empty to full when elements added |
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*/ |
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public void testEmptyFull() { |
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LinkedBlockingQueue q = new LinkedBlockingQueue(2); |
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assertTrue(q.isEmpty()); |
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assertEquals("should have room for 2", 2, q.remainingCapacity()); |
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q.add(new Integer(1)); |
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q.add(one); |
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assertFalse(q.isEmpty()); |
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q.add(new Integer(2)); |
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q.add(two); |
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assertFalse(q.isEmpty()); |
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assertEquals("queue should be full", 0, q.remainingCapacity()); |
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assertFalse("offer should be rejected", q.offer(new Integer(3))); |
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assertEquals(0, q.remainingCapacity()); |
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assertFalse(q.offer(three)); |
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} |
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|
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public void testRemainingCapacity(){ |
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LinkedBlockingQueue q = fullQueue(N); |
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for (int i = 0; i < N; ++i) { |
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/** |
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* remainingCapacity decreases on add, increases on remove |
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*/ |
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public void testRemainingCapacity() { |
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LinkedBlockingQueue q = populatedQueue(SIZE); |
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for (int i = 0; i < SIZE; ++i) { |
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assertEquals(i, q.remainingCapacity()); |
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assertEquals(N-i, q.size()); |
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assertEquals(SIZE-i, q.size()); |
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q.remove(); |
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} |
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for (int i = 0; i < N; ++i) { |
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assertEquals(N-i, q.remainingCapacity()); |
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for (int i = 0; i < SIZE; ++i) { |
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assertEquals(SIZE-i, q.remainingCapacity()); |
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assertEquals(i, q.size()); |
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q.add(new Integer(i)); |
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} |
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} |
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|
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public void testOfferNull(){ |
153 |
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try { |
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/** |
153 |
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* offer(null) throws NPE |
154 |
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*/ |
155 |
> |
public void testOfferNull() { |
156 |
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try { |
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LinkedBlockingQueue q = new LinkedBlockingQueue(1); |
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q.offer(null); |
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fail("should throw NPE"); |
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} catch (NullPointerException success) { } |
159 |
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shouldThrow(); |
160 |
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} catch (NullPointerException success) {} |
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} |
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|
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public void testOffer(){ |
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/** |
164 |
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* add(null) throws NPE |
165 |
> |
*/ |
166 |
> |
public void testAddNull() { |
167 |
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try { |
168 |
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LinkedBlockingQueue q = new LinkedBlockingQueue(1); |
169 |
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q.add(null); |
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shouldThrow(); |
171 |
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} catch (NullPointerException success) {} |
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} |
173 |
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|
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/** |
175 |
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* Offer succeeds if not full; fails if full |
176 |
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*/ |
177 |
> |
public void testOffer() { |
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LinkedBlockingQueue q = new LinkedBlockingQueue(1); |
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assertTrue(q.offer(new Integer(0))); |
180 |
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assertFalse(q.offer(new Integer(1))); |
179 |
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assertTrue(q.offer(zero)); |
180 |
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assertFalse(q.offer(one)); |
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} |
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|
183 |
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public void testAdd(){ |
184 |
< |
try { |
185 |
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LinkedBlockingQueue q = new LinkedBlockingQueue(N); |
186 |
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for (int i = 0; i < N; ++i) { |
183 |
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/** |
184 |
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* add succeeds if not full; throws ISE if full |
185 |
> |
*/ |
186 |
> |
public void testAdd() { |
187 |
> |
try { |
188 |
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LinkedBlockingQueue q = new LinkedBlockingQueue(SIZE); |
189 |
> |
for (int i = 0; i < SIZE; ++i) { |
190 |
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assertTrue(q.add(new Integer(i))); |
191 |
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} |
192 |
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assertEquals(0, q.remainingCapacity()); |
193 |
< |
q.add(new Integer(N)); |
194 |
< |
} catch (IllegalStateException success){ |
195 |
< |
} |
193 |
> |
q.add(new Integer(SIZE)); |
194 |
> |
shouldThrow(); |
195 |
> |
} catch (IllegalStateException success) {} |
196 |
|
} |
197 |
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|
198 |
< |
public void testAddAll1(){ |
198 |
> |
/** |
199 |
> |
* addAll(null) throws NPE |
200 |
> |
*/ |
201 |
> |
public void testAddAll1() { |
202 |
|
try { |
203 |
|
LinkedBlockingQueue q = new LinkedBlockingQueue(1); |
204 |
|
q.addAll(null); |
205 |
< |
fail("Cannot add null collection"); |
206 |
< |
} |
207 |
< |
catch (NullPointerException success) {} |
205 |
> |
shouldThrow(); |
206 |
> |
} catch (NullPointerException success) {} |
207 |
> |
} |
208 |
> |
|
209 |
> |
/** |
210 |
> |
* addAll(this) throws IAE |
211 |
> |
*/ |
212 |
> |
public void testAddAllSelf() { |
213 |
> |
try { |
214 |
> |
LinkedBlockingQueue q = populatedQueue(SIZE); |
215 |
> |
q.addAll(q); |
216 |
> |
shouldThrow(); |
217 |
> |
} catch (IllegalArgumentException success) {} |
218 |
|
} |
219 |
< |
public void testAddAll2(){ |
219 |
> |
|
220 |
> |
/** |
221 |
> |
* addAll of a collection with null elements throws NPE |
222 |
> |
*/ |
223 |
> |
public void testAddAll2() { |
224 |
|
try { |
225 |
< |
LinkedBlockingQueue q = new LinkedBlockingQueue(N); |
226 |
< |
Integer[] ints = new Integer[N]; |
225 |
> |
LinkedBlockingQueue q = new LinkedBlockingQueue(SIZE); |
226 |
> |
Integer[] ints = new Integer[SIZE]; |
227 |
|
q.addAll(Arrays.asList(ints)); |
228 |
< |
fail("Cannot add null elements"); |
229 |
< |
} |
162 |
< |
catch (NullPointerException success) {} |
228 |
> |
shouldThrow(); |
229 |
> |
} catch (NullPointerException success) {} |
230 |
|
} |
231 |
< |
public void testAddAll3(){ |
231 |
> |
|
232 |
> |
/** |
233 |
> |
* addAll of a collection with any null elements throws NPE after |
234 |
> |
* possibly adding some elements |
235 |
> |
*/ |
236 |
> |
public void testAddAll3() { |
237 |
|
try { |
238 |
< |
LinkedBlockingQueue q = new LinkedBlockingQueue(N); |
239 |
< |
Integer[] ints = new Integer[N]; |
240 |
< |
for (int i = 0; i < N-1; ++i) |
238 |
> |
LinkedBlockingQueue q = new LinkedBlockingQueue(SIZE); |
239 |
> |
Integer[] ints = new Integer[SIZE]; |
240 |
> |
for (int i = 0; i < SIZE-1; ++i) |
241 |
|
ints[i] = new Integer(i); |
242 |
|
q.addAll(Arrays.asList(ints)); |
243 |
< |
fail("Cannot add null elements"); |
244 |
< |
} |
173 |
< |
catch (NullPointerException success) {} |
243 |
> |
shouldThrow(); |
244 |
> |
} catch (NullPointerException success) {} |
245 |
|
} |
246 |
< |
public void testAddAll4(){ |
246 |
> |
|
247 |
> |
/** |
248 |
> |
* addAll throws ISE if not enough room |
249 |
> |
*/ |
250 |
> |
public void testAddAll4() { |
251 |
|
try { |
252 |
|
LinkedBlockingQueue q = new LinkedBlockingQueue(1); |
253 |
< |
Integer[] ints = new Integer[N]; |
254 |
< |
for (int i = 0; i < N; ++i) |
253 |
> |
Integer[] ints = new Integer[SIZE]; |
254 |
> |
for (int i = 0; i < SIZE; ++i) |
255 |
|
ints[i] = new Integer(i); |
256 |
|
q.addAll(Arrays.asList(ints)); |
257 |
< |
fail("Cannot add with insufficient capacity"); |
258 |
< |
} |
184 |
< |
catch (IllegalStateException success) {} |
257 |
> |
shouldThrow(); |
258 |
> |
} catch (IllegalStateException success) {} |
259 |
|
} |
260 |
< |
public void testAddAll5(){ |
261 |
< |
try { |
262 |
< |
Integer[] empty = new Integer[0]; |
263 |
< |
Integer[] ints = new Integer[N]; |
264 |
< |
for (int i = 0; i < N; ++i) |
265 |
< |
ints[i] = new Integer(i); |
266 |
< |
LinkedBlockingQueue q = new LinkedBlockingQueue(N); |
267 |
< |
assertFalse(q.addAll(Arrays.asList(empty))); |
268 |
< |
assertTrue(q.addAll(Arrays.asList(ints))); |
269 |
< |
for (int i = 0; i < N; ++i) |
270 |
< |
assertEquals(ints[i], q.poll()); |
271 |
< |
} |
272 |
< |
finally {} |
260 |
> |
|
261 |
> |
/** |
262 |
> |
* Queue contains all elements, in traversal order, of successful addAll |
263 |
> |
*/ |
264 |
> |
public void testAddAll5() { |
265 |
> |
Integer[] empty = new Integer[0]; |
266 |
> |
Integer[] ints = new Integer[SIZE]; |
267 |
> |
for (int i = 0; i < SIZE; ++i) |
268 |
> |
ints[i] = new Integer(i); |
269 |
> |
LinkedBlockingQueue q = new LinkedBlockingQueue(SIZE); |
270 |
> |
assertFalse(q.addAll(Arrays.asList(empty))); |
271 |
> |
assertTrue(q.addAll(Arrays.asList(ints))); |
272 |
> |
for (int i = 0; i < SIZE; ++i) |
273 |
> |
assertEquals(ints[i], q.poll()); |
274 |
|
} |
275 |
|
|
276 |
< |
public void testPutNull() { |
277 |
< |
try { |
278 |
< |
LinkedBlockingQueue q = new LinkedBlockingQueue(N); |
276 |
> |
/** |
277 |
> |
* put(null) throws NPE |
278 |
> |
*/ |
279 |
> |
public void testPutNull() throws InterruptedException { |
280 |
> |
try { |
281 |
> |
LinkedBlockingQueue q = new LinkedBlockingQueue(SIZE); |
282 |
|
q.put(null); |
283 |
< |
fail("put should throw NPE"); |
284 |
< |
} |
207 |
< |
catch (NullPointerException success){ |
208 |
< |
} |
209 |
< |
catch (InterruptedException ie) { |
210 |
< |
fail("Unexpected exception"); |
211 |
< |
} |
212 |
< |
} |
213 |
< |
|
214 |
< |
public void testPut() { |
215 |
< |
try { |
216 |
< |
LinkedBlockingQueue q = new LinkedBlockingQueue(N); |
217 |
< |
for (int i = 0; i < N; ++i) { |
218 |
< |
Integer I = new Integer(i); |
219 |
< |
q.put(I); |
220 |
< |
assertTrue(q.contains(I)); |
221 |
< |
} |
222 |
< |
assertEquals(0, q.remainingCapacity()); |
223 |
< |
} |
224 |
< |
catch (InterruptedException ie) { |
225 |
< |
fail("Unexpected exception"); |
226 |
< |
} |
283 |
> |
shouldThrow(); |
284 |
> |
} catch (NullPointerException success) {} |
285 |
|
} |
286 |
|
|
287 |
< |
public void testBlockingPut(){ |
288 |
< |
Thread t = new Thread(new Runnable() { |
289 |
< |
public void run() { |
290 |
< |
int added = 0; |
291 |
< |
try { |
292 |
< |
LinkedBlockingQueue q = new LinkedBlockingQueue(N); |
293 |
< |
for (int i = 0; i < N; ++i) { |
294 |
< |
q.put(new Integer(i)); |
295 |
< |
++added; |
238 |
< |
} |
239 |
< |
q.put(new Integer(N)); |
240 |
< |
fail("put should block"); |
241 |
< |
} catch (InterruptedException ie){ |
242 |
< |
assertEquals(added, N); |
243 |
< |
} |
244 |
< |
}}); |
245 |
< |
t.start(); |
246 |
< |
try { |
247 |
< |
Thread.sleep(SHORT_DELAY_MS); |
248 |
< |
t.interrupt(); |
249 |
< |
t.join(); |
250 |
< |
} |
251 |
< |
catch (InterruptedException ie) { |
252 |
< |
fail("Unexpected exception"); |
287 |
> |
/** |
288 |
> |
* all elements successfully put are contained |
289 |
> |
*/ |
290 |
> |
public void testPut() throws InterruptedException { |
291 |
> |
LinkedBlockingQueue q = new LinkedBlockingQueue(SIZE); |
292 |
> |
for (int i = 0; i < SIZE; ++i) { |
293 |
> |
Integer I = new Integer(i); |
294 |
> |
q.put(I); |
295 |
> |
assertTrue(q.contains(I)); |
296 |
|
} |
297 |
+ |
assertEquals(0, q.remainingCapacity()); |
298 |
|
} |
299 |
|
|
300 |
< |
public void testPutWithTake() { |
300 |
> |
/** |
301 |
> |
* put blocks interruptibly if full |
302 |
> |
*/ |
303 |
> |
public void testBlockingPut() throws InterruptedException { |
304 |
> |
final LinkedBlockingQueue q = new LinkedBlockingQueue(SIZE); |
305 |
> |
final CountDownLatch pleaseInterrupt = new CountDownLatch(1); |
306 |
> |
Thread t = newStartedThread(new CheckedRunnable() { |
307 |
> |
public void realRun() throws InterruptedException { |
308 |
> |
for (int i = 0; i < SIZE; ++i) |
309 |
> |
q.put(i); |
310 |
> |
assertEquals(SIZE, q.size()); |
311 |
> |
assertEquals(0, q.remainingCapacity()); |
312 |
> |
|
313 |
> |
Thread.currentThread().interrupt(); |
314 |
> |
try { |
315 |
> |
q.put(99); |
316 |
> |
shouldThrow(); |
317 |
> |
} catch (InterruptedException success) {} |
318 |
> |
assertFalse(Thread.interrupted()); |
319 |
> |
|
320 |
> |
pleaseInterrupt.countDown(); |
321 |
> |
try { |
322 |
> |
q.put(99); |
323 |
> |
shouldThrow(); |
324 |
> |
} catch (InterruptedException success) {} |
325 |
> |
assertFalse(Thread.interrupted()); |
326 |
> |
}}); |
327 |
> |
|
328 |
> |
await(pleaseInterrupt); |
329 |
> |
assertThreadStaysAlive(t); |
330 |
> |
t.interrupt(); |
331 |
> |
awaitTermination(t); |
332 |
> |
assertEquals(SIZE, q.size()); |
333 |
> |
assertEquals(0, q.remainingCapacity()); |
334 |
> |
} |
335 |
> |
|
336 |
> |
/** |
337 |
> |
* put blocks interruptibly waiting for take when full |
338 |
> |
*/ |
339 |
> |
public void testPutWithTake() throws InterruptedException { |
340 |
> |
final int capacity = 2; |
341 |
|
final LinkedBlockingQueue q = new LinkedBlockingQueue(2); |
342 |
< |
Thread t = new Thread(new Runnable() { |
343 |
< |
public void run(){ |
344 |
< |
int added = 0; |
345 |
< |
try { |
346 |
< |
q.put(new Object()); |
347 |
< |
++added; |
348 |
< |
q.put(new Object()); |
349 |
< |
++added; |
350 |
< |
q.put(new Object()); |
351 |
< |
++added; |
352 |
< |
q.put(new Object()); |
353 |
< |
++added; |
354 |
< |
fail("Should block"); |
355 |
< |
} catch (InterruptedException e){ |
356 |
< |
assertTrue(added >= 2); |
357 |
< |
} |
358 |
< |
} |
359 |
< |
}); |
360 |
< |
try { |
361 |
< |
t.start(); |
362 |
< |
Thread.sleep(SHORT_DELAY_MS); |
363 |
< |
q.take(); |
364 |
< |
t.interrupt(); |
365 |
< |
t.join(); |
366 |
< |
} catch (Exception e){ |
367 |
< |
fail("Unexpected exception"); |
284 |
< |
} |
342 |
> |
final CountDownLatch pleaseTake = new CountDownLatch(1); |
343 |
> |
final CountDownLatch pleaseInterrupt = new CountDownLatch(1); |
344 |
> |
Thread t = newStartedThread(new CheckedRunnable() { |
345 |
> |
public void realRun() throws InterruptedException { |
346 |
> |
for (int i = 0; i < capacity; i++) |
347 |
> |
q.put(i); |
348 |
> |
pleaseTake.countDown(); |
349 |
> |
q.put(86); |
350 |
> |
|
351 |
> |
pleaseInterrupt.countDown(); |
352 |
> |
try { |
353 |
> |
q.put(99); |
354 |
> |
shouldThrow(); |
355 |
> |
} catch (InterruptedException success) {} |
356 |
> |
assertFalse(Thread.interrupted()); |
357 |
> |
}}); |
358 |
> |
|
359 |
> |
await(pleaseTake); |
360 |
> |
assertEquals(q.remainingCapacity(), 0); |
361 |
> |
assertEquals(0, q.take()); |
362 |
> |
|
363 |
> |
await(pleaseInterrupt); |
364 |
> |
assertThreadStaysAlive(t); |
365 |
> |
t.interrupt(); |
366 |
> |
awaitTermination(t); |
367 |
> |
assertEquals(q.remainingCapacity(), 0); |
368 |
|
} |
369 |
|
|
370 |
+ |
/** |
371 |
+ |
* timed offer times out if full and elements not taken |
372 |
+ |
*/ |
373 |
|
public void testTimedOffer() { |
374 |
|
final LinkedBlockingQueue q = new LinkedBlockingQueue(2); |
375 |
< |
Thread t = new Thread(new Runnable() { |
376 |
< |
public void run(){ |
377 |
< |
try { |
378 |
< |
q.put(new Object()); |
379 |
< |
q.put(new Object()); |
380 |
< |
assertFalse(q.offer(new Object(), SHORT_DELAY_MS/2, TimeUnit.MILLISECONDS)); |
381 |
< |
q.offer(new Object(), LONG_DELAY_MS, TimeUnit.MILLISECONDS); |
382 |
< |
fail("Should block"); |
383 |
< |
} catch (InterruptedException success){} |
384 |
< |
} |
385 |
< |
}); |
386 |
< |
|
387 |
< |
try { |
388 |
< |
t.start(); |
389 |
< |
Thread.sleep(SHORT_DELAY_MS); |
390 |
< |
t.interrupt(); |
391 |
< |
t.join(); |
392 |
< |
} catch (Exception e){ |
393 |
< |
fail("Unexpected exception"); |
308 |
< |
} |
375 |
> |
final CountDownLatch pleaseInterrupt = new CountDownLatch(1); |
376 |
> |
Thread t = newStartedThread(new CheckedRunnable() { |
377 |
> |
public void realRun() throws InterruptedException { |
378 |
> |
q.put(new Object()); |
379 |
> |
q.put(new Object()); |
380 |
> |
long startTime = System.nanoTime(); |
381 |
> |
assertFalse(q.offer(new Object(), timeoutMillis(), MILLISECONDS)); |
382 |
> |
assertTrue(millisElapsedSince(startTime) >= timeoutMillis()); |
383 |
> |
pleaseInterrupt.countDown(); |
384 |
> |
try { |
385 |
> |
q.offer(new Object(), 2 * LONG_DELAY_MS, MILLISECONDS); |
386 |
> |
shouldThrow(); |
387 |
> |
} catch (InterruptedException success) {} |
388 |
> |
}}); |
389 |
> |
|
390 |
> |
await(pleaseInterrupt); |
391 |
> |
assertThreadStaysAlive(t); |
392 |
> |
t.interrupt(); |
393 |
> |
awaitTermination(t); |
394 |
|
} |
395 |
|
|
396 |
< |
public void testTake(){ |
397 |
< |
try { |
398 |
< |
LinkedBlockingQueue q = fullQueue(N); |
399 |
< |
for (int i = 0; i < N; ++i) { |
400 |
< |
assertEquals(i, ((Integer)q.take()).intValue()); |
401 |
< |
} |
402 |
< |
} catch (InterruptedException e){ |
403 |
< |
fail("Unexpected exception"); |
319 |
< |
} |
396 |
> |
/** |
397 |
> |
* take retrieves elements in FIFO order |
398 |
> |
*/ |
399 |
> |
public void testTake() throws InterruptedException { |
400 |
> |
LinkedBlockingQueue q = populatedQueue(SIZE); |
401 |
> |
for (int i = 0; i < SIZE; ++i) { |
402 |
> |
assertEquals(i, q.take()); |
403 |
> |
} |
404 |
|
} |
405 |
|
|
406 |
< |
public void testTakeFromEmpty() { |
407 |
< |
final LinkedBlockingQueue q = new LinkedBlockingQueue(2); |
408 |
< |
Thread t = new Thread(new Runnable() { |
409 |
< |
public void run(){ |
410 |
< |
try { |
411 |
< |
q.take(); |
412 |
< |
fail("Should block"); |
413 |
< |
} catch (InterruptedException success){ } |
406 |
> |
/** |
407 |
> |
* Take removes existing elements until empty, then blocks interruptibly |
408 |
> |
*/ |
409 |
> |
public void testBlockingTake() throws InterruptedException { |
410 |
> |
final BlockingQueue q = populatedQueue(SIZE); |
411 |
> |
final CountDownLatch pleaseInterrupt = new CountDownLatch(1); |
412 |
> |
Thread t = newStartedThread(new CheckedRunnable() { |
413 |
> |
public void realRun() throws InterruptedException { |
414 |
> |
for (int i = 0; i < SIZE; ++i) { |
415 |
> |
assertEquals(i, q.take()); |
416 |
|
} |
417 |
< |
}); |
418 |
< |
try { |
419 |
< |
t.start(); |
420 |
< |
Thread.sleep(SHORT_DELAY_MS); |
421 |
< |
t.interrupt(); |
422 |
< |
t.join(); |
423 |
< |
} catch (Exception e){ |
424 |
< |
fail("Unexpected exception"); |
425 |
< |
} |
417 |
> |
|
418 |
> |
Thread.currentThread().interrupt(); |
419 |
> |
try { |
420 |
> |
q.take(); |
421 |
> |
shouldThrow(); |
422 |
> |
} catch (InterruptedException success) {} |
423 |
> |
assertFalse(Thread.interrupted()); |
424 |
> |
|
425 |
> |
pleaseInterrupt.countDown(); |
426 |
> |
try { |
427 |
> |
q.take(); |
428 |
> |
shouldThrow(); |
429 |
> |
} catch (InterruptedException success) {} |
430 |
> |
assertFalse(Thread.interrupted()); |
431 |
> |
}}); |
432 |
> |
|
433 |
> |
await(pleaseInterrupt); |
434 |
> |
assertThreadStaysAlive(t); |
435 |
> |
t.interrupt(); |
436 |
> |
awaitTermination(t); |
437 |
|
} |
438 |
|
|
439 |
< |
public void testBlockingTake(){ |
440 |
< |
Thread t = new Thread(new Runnable() { |
441 |
< |
public void run() { |
442 |
< |
try { |
443 |
< |
LinkedBlockingQueue q = fullQueue(N); |
444 |
< |
for (int i = 0; i < N; ++i) { |
445 |
< |
assertEquals(i, ((Integer)q.take()).intValue()); |
349 |
< |
} |
350 |
< |
q.take(); |
351 |
< |
fail("take should block"); |
352 |
< |
} catch (InterruptedException success){ |
353 |
< |
} |
354 |
< |
}}); |
355 |
< |
t.start(); |
356 |
< |
try { |
357 |
< |
Thread.sleep(SHORT_DELAY_MS); |
358 |
< |
t.interrupt(); |
359 |
< |
t.join(); |
360 |
< |
} |
361 |
< |
catch (InterruptedException ie) { |
362 |
< |
fail("Unexpected exception"); |
439 |
> |
/** |
440 |
> |
* poll succeeds unless empty |
441 |
> |
*/ |
442 |
> |
public void testPoll() { |
443 |
> |
LinkedBlockingQueue q = populatedQueue(SIZE); |
444 |
> |
for (int i = 0; i < SIZE; ++i) { |
445 |
> |
assertEquals(i, q.poll()); |
446 |
|
} |
447 |
+ |
assertNull(q.poll()); |
448 |
|
} |
449 |
|
|
450 |
< |
|
451 |
< |
public void testPoll(){ |
452 |
< |
LinkedBlockingQueue q = fullQueue(N); |
453 |
< |
for (int i = 0; i < N; ++i) { |
454 |
< |
assertEquals(i, ((Integer)q.poll()).intValue()); |
450 |
> |
/** |
451 |
> |
* timed poll with zero timeout succeeds when non-empty, else times out |
452 |
> |
*/ |
453 |
> |
public void testTimedPoll0() throws InterruptedException { |
454 |
> |
LinkedBlockingQueue q = populatedQueue(SIZE); |
455 |
> |
for (int i = 0; i < SIZE; ++i) { |
456 |
> |
assertEquals(i, q.poll(0, MILLISECONDS)); |
457 |
|
} |
458 |
< |
assertNull(q.poll()); |
458 |
> |
assertNull(q.poll(0, MILLISECONDS)); |
459 |
|
} |
460 |
|
|
461 |
< |
public void testTimedPoll0() { |
462 |
< |
try { |
463 |
< |
LinkedBlockingQueue q = fullQueue(N); |
464 |
< |
for (int i = 0; i < N; ++i) { |
465 |
< |
assertEquals(i, ((Integer)q.poll(0, TimeUnit.MILLISECONDS)).intValue()); |
466 |
< |
} |
467 |
< |
assertNull(q.poll(0, TimeUnit.MILLISECONDS)); |
468 |
< |
} catch (InterruptedException e){ |
469 |
< |
fail("Unexpected exception"); |
470 |
< |
} |
461 |
> |
/** |
462 |
> |
* timed poll with nonzero timeout succeeds when non-empty, else times out |
463 |
> |
*/ |
464 |
> |
public void testTimedPoll() throws InterruptedException { |
465 |
> |
LinkedBlockingQueue<Integer> q = populatedQueue(SIZE); |
466 |
> |
for (int i = 0; i < SIZE; ++i) { |
467 |
> |
long startTime = System.nanoTime(); |
468 |
> |
assertEquals(i, (int) q.poll(LONG_DELAY_MS, MILLISECONDS)); |
469 |
> |
assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS); |
470 |
> |
} |
471 |
> |
long startTime = System.nanoTime(); |
472 |
> |
assertNull(q.poll(timeoutMillis(), MILLISECONDS)); |
473 |
> |
assertTrue(millisElapsedSince(startTime) >= timeoutMillis()); |
474 |
> |
checkEmpty(q); |
475 |
|
} |
476 |
|
|
477 |
< |
public void testTimedPoll() { |
478 |
< |
try { |
479 |
< |
LinkedBlockingQueue q = fullQueue(N); |
480 |
< |
for (int i = 0; i < N; ++i) { |
481 |
< |
assertEquals(i, ((Integer)q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS)).intValue()); |
482 |
< |
} |
483 |
< |
assertNull(q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS)); |
484 |
< |
} catch (InterruptedException e){ |
485 |
< |
fail("Unexpected exception"); |
486 |
< |
} |
487 |
< |
} |
488 |
< |
|
489 |
< |
public void testInterruptedTimedPoll(){ |
490 |
< |
Thread t = new Thread(new Runnable() { |
491 |
< |
public void run() { |
492 |
< |
try { |
493 |
< |
LinkedBlockingQueue q = fullQueue(N); |
494 |
< |
for (int i = 0; i < N; ++i) { |
495 |
< |
assertEquals(i, ((Integer)q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS)).intValue()); |
496 |
< |
} |
497 |
< |
assertNull(q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS)); |
498 |
< |
} catch (InterruptedException success){ |
499 |
< |
} |
500 |
< |
}}); |
501 |
< |
t.start(); |
502 |
< |
try { |
503 |
< |
Thread.sleep(SHORT_DELAY_MS); |
504 |
< |
t.interrupt(); |
505 |
< |
t.join(); |
416 |
< |
} |
417 |
< |
catch (InterruptedException ie) { |
418 |
< |
fail("Unexpected exception"); |
419 |
< |
} |
477 |
> |
/** |
478 |
> |
* Interrupted timed poll throws InterruptedException instead of |
479 |
> |
* returning timeout status |
480 |
> |
*/ |
481 |
> |
public void testInterruptedTimedPoll() throws InterruptedException { |
482 |
> |
final BlockingQueue<Integer> q = populatedQueue(SIZE); |
483 |
> |
final CountDownLatch aboutToWait = new CountDownLatch(1); |
484 |
> |
Thread t = newStartedThread(new CheckedRunnable() { |
485 |
> |
public void realRun() throws InterruptedException { |
486 |
> |
for (int i = 0; i < SIZE; ++i) { |
487 |
> |
long t0 = System.nanoTime(); |
488 |
> |
assertEquals(i, (int) q.poll(LONG_DELAY_MS, MILLISECONDS)); |
489 |
> |
assertTrue(millisElapsedSince(t0) < SMALL_DELAY_MS); |
490 |
> |
} |
491 |
> |
long t0 = System.nanoTime(); |
492 |
> |
aboutToWait.countDown(); |
493 |
> |
try { |
494 |
> |
q.poll(MEDIUM_DELAY_MS, MILLISECONDS); |
495 |
> |
shouldThrow(); |
496 |
> |
} catch (InterruptedException success) { |
497 |
> |
assertTrue(millisElapsedSince(t0) < MEDIUM_DELAY_MS); |
498 |
> |
} |
499 |
> |
}}); |
500 |
> |
|
501 |
> |
aboutToWait.await(); |
502 |
> |
waitForThreadToEnterWaitState(t, SMALL_DELAY_MS); |
503 |
> |
t.interrupt(); |
504 |
> |
awaitTermination(t, MEDIUM_DELAY_MS); |
505 |
> |
checkEmpty(q); |
506 |
|
} |
507 |
|
|
508 |
< |
public void testTimedPollWithOffer(){ |
509 |
< |
final LinkedBlockingQueue q = new LinkedBlockingQueue(2); |
510 |
< |
Thread t = new Thread(new Runnable() { |
511 |
< |
public void run(){ |
512 |
< |
try { |
513 |
< |
assertNull(q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS)); |
514 |
< |
q.poll(LONG_DELAY_MS, TimeUnit.MILLISECONDS); |
515 |
< |
q.poll(LONG_DELAY_MS, TimeUnit.MILLISECONDS); |
430 |
< |
fail("Should block"); |
431 |
< |
} catch (InterruptedException success) { } |
432 |
< |
} |
433 |
< |
}); |
434 |
< |
try { |
435 |
< |
t.start(); |
436 |
< |
Thread.sleep(SHORT_DELAY_MS * 2); |
437 |
< |
assertTrue(q.offer(new Integer(0), SHORT_DELAY_MS, TimeUnit.MILLISECONDS)); |
438 |
< |
t.interrupt(); |
439 |
< |
t.join(); |
440 |
< |
} catch (Exception e){ |
441 |
< |
fail("Unexpected exception"); |
442 |
< |
} |
443 |
< |
} |
444 |
< |
|
445 |
< |
|
446 |
< |
public void testPeek(){ |
447 |
< |
LinkedBlockingQueue q = fullQueue(N); |
448 |
< |
for (int i = 0; i < N; ++i) { |
449 |
< |
assertEquals(i, ((Integer)q.peek()).intValue()); |
450 |
< |
q.poll(); |
508 |
> |
/** |
509 |
> |
* peek returns next element, or null if empty |
510 |
> |
*/ |
511 |
> |
public void testPeek() { |
512 |
> |
LinkedBlockingQueue q = populatedQueue(SIZE); |
513 |
> |
for (int i = 0; i < SIZE; ++i) { |
514 |
> |
assertEquals(i, q.peek()); |
515 |
> |
assertEquals(i, q.poll()); |
516 |
|
assertTrue(q.peek() == null || |
517 |
< |
i != ((Integer)q.peek()).intValue()); |
517 |
> |
!q.peek().equals(i)); |
518 |
|
} |
519 |
< |
assertNull(q.peek()); |
519 |
> |
assertNull(q.peek()); |
520 |
|
} |
521 |
|
|
522 |
< |
public void testElement(){ |
523 |
< |
LinkedBlockingQueue q = fullQueue(N); |
524 |
< |
for (int i = 0; i < N; ++i) { |
525 |
< |
assertEquals(i, ((Integer)q.element()).intValue()); |
526 |
< |
q.poll(); |
522 |
> |
/** |
523 |
> |
* element returns next element, or throws NSEE if empty |
524 |
> |
*/ |
525 |
> |
public void testElement() { |
526 |
> |
LinkedBlockingQueue q = populatedQueue(SIZE); |
527 |
> |
for (int i = 0; i < SIZE; ++i) { |
528 |
> |
assertEquals(i, q.element()); |
529 |
> |
assertEquals(i, q.poll()); |
530 |
|
} |
531 |
|
try { |
532 |
|
q.element(); |
533 |
< |
fail("no such element"); |
534 |
< |
} |
467 |
< |
catch (NoSuchElementException success) {} |
533 |
> |
shouldThrow(); |
534 |
> |
} catch (NoSuchElementException success) {} |
535 |
|
} |
536 |
|
|
537 |
< |
public void testRemove(){ |
538 |
< |
LinkedBlockingQueue q = fullQueue(N); |
539 |
< |
for (int i = 0; i < N; ++i) { |
540 |
< |
assertEquals(i, ((Integer)q.remove()).intValue()); |
537 |
> |
/** |
538 |
> |
* remove removes next element, or throws NSEE if empty |
539 |
> |
*/ |
540 |
> |
public void testRemove() { |
541 |
> |
LinkedBlockingQueue q = populatedQueue(SIZE); |
542 |
> |
for (int i = 0; i < SIZE; ++i) { |
543 |
> |
assertEquals(i, q.remove()); |
544 |
|
} |
545 |
|
try { |
546 |
|
q.remove(); |
547 |
< |
fail("remove should throw"); |
548 |
< |
} catch (NoSuchElementException success){ |
549 |
< |
} |
550 |
< |
} |
551 |
< |
|
552 |
< |
public void testRemoveElement(){ |
553 |
< |
LinkedBlockingQueue q = fullQueue(N); |
554 |
< |
for (int i = 1; i < N; i+=2) { |
555 |
< |
assertTrue(q.remove(new Integer(i))); |
556 |
< |
} |
557 |
< |
for (int i = 0; i < N; i+=2) { |
558 |
< |
assertTrue(q.remove(new Integer(i))); |
559 |
< |
assertFalse(q.remove(new Integer(i+1))); |
560 |
< |
} |
561 |
< |
assert(q.isEmpty()); |
562 |
< |
} |
563 |
< |
|
564 |
< |
public void testContains(){ |
565 |
< |
LinkedBlockingQueue q = fullQueue(N); |
566 |
< |
for (int i = 0; i < N; ++i) { |
547 |
> |
shouldThrow(); |
548 |
> |
} catch (NoSuchElementException success) {} |
549 |
> |
} |
550 |
> |
|
551 |
> |
/** |
552 |
> |
* remove(x) removes x and returns true if present |
553 |
> |
*/ |
554 |
> |
public void testRemoveElement() { |
555 |
> |
LinkedBlockingQueue q = populatedQueue(SIZE); |
556 |
> |
for (int i = 1; i < SIZE; i+=2) { |
557 |
> |
assertTrue(q.contains(i)); |
558 |
> |
assertTrue(q.remove(i)); |
559 |
> |
assertFalse(q.contains(i)); |
560 |
> |
assertTrue(q.contains(i-1)); |
561 |
> |
} |
562 |
> |
for (int i = 0; i < SIZE; i+=2) { |
563 |
> |
assertTrue(q.contains(i)); |
564 |
> |
assertTrue(q.remove(i)); |
565 |
> |
assertFalse(q.contains(i)); |
566 |
> |
assertFalse(q.remove(i+1)); |
567 |
> |
assertFalse(q.contains(i+1)); |
568 |
> |
} |
569 |
> |
assertTrue(q.isEmpty()); |
570 |
> |
} |
571 |
> |
|
572 |
> |
/** |
573 |
> |
* An add following remove(x) succeeds |
574 |
> |
*/ |
575 |
> |
public void testRemoveElementAndAdd() throws InterruptedException { |
576 |
> |
LinkedBlockingQueue q = new LinkedBlockingQueue(); |
577 |
> |
assertTrue(q.add(new Integer(1))); |
578 |
> |
assertTrue(q.add(new Integer(2))); |
579 |
> |
assertTrue(q.remove(new Integer(1))); |
580 |
> |
assertTrue(q.remove(new Integer(2))); |
581 |
> |
assertTrue(q.add(new Integer(3))); |
582 |
> |
assertTrue(q.take() != null); |
583 |
> |
} |
584 |
> |
|
585 |
> |
/** |
586 |
> |
* contains(x) reports true when elements added but not yet removed |
587 |
> |
*/ |
588 |
> |
public void testContains() { |
589 |
> |
LinkedBlockingQueue q = populatedQueue(SIZE); |
590 |
> |
for (int i = 0; i < SIZE; ++i) { |
591 |
|
assertTrue(q.contains(new Integer(i))); |
592 |
|
q.poll(); |
593 |
|
assertFalse(q.contains(new Integer(i))); |
594 |
|
} |
595 |
|
} |
596 |
|
|
597 |
< |
public void testClear(){ |
598 |
< |
LinkedBlockingQueue q = fullQueue(N); |
597 |
> |
/** |
598 |
> |
* clear removes all elements |
599 |
> |
*/ |
600 |
> |
public void testClear() { |
601 |
> |
LinkedBlockingQueue q = populatedQueue(SIZE); |
602 |
|
q.clear(); |
603 |
|
assertTrue(q.isEmpty()); |
604 |
|
assertEquals(0, q.size()); |
605 |
< |
assertEquals(N, q.remainingCapacity()); |
606 |
< |
q.add(new Integer(1)); |
605 |
> |
assertEquals(SIZE, q.remainingCapacity()); |
606 |
> |
q.add(one); |
607 |
|
assertFalse(q.isEmpty()); |
608 |
+ |
assertTrue(q.contains(one)); |
609 |
|
q.clear(); |
610 |
|
assertTrue(q.isEmpty()); |
611 |
|
} |
612 |
|
|
613 |
< |
public void testContainsAll(){ |
614 |
< |
LinkedBlockingQueue q = fullQueue(N); |
615 |
< |
LinkedBlockingQueue p = new LinkedBlockingQueue(N); |
616 |
< |
for (int i = 0; i < N; ++i) { |
613 |
> |
/** |
614 |
> |
* containsAll(c) is true when c contains a subset of elements |
615 |
> |
*/ |
616 |
> |
public void testContainsAll() { |
617 |
> |
LinkedBlockingQueue q = populatedQueue(SIZE); |
618 |
> |
LinkedBlockingQueue p = new LinkedBlockingQueue(SIZE); |
619 |
> |
for (int i = 0; i < SIZE; ++i) { |
620 |
|
assertTrue(q.containsAll(p)); |
621 |
|
assertFalse(p.containsAll(q)); |
622 |
|
p.add(new Integer(i)); |
624 |
|
assertTrue(p.containsAll(q)); |
625 |
|
} |
626 |
|
|
627 |
< |
public void testRetainAll(){ |
628 |
< |
LinkedBlockingQueue q = fullQueue(N); |
629 |
< |
LinkedBlockingQueue p = fullQueue(N); |
630 |
< |
for (int i = 0; i < N; ++i) { |
627 |
> |
/** |
628 |
> |
* retainAll(c) retains only those elements of c and reports true if changed |
629 |
> |
*/ |
630 |
> |
public void testRetainAll() { |
631 |
> |
LinkedBlockingQueue q = populatedQueue(SIZE); |
632 |
> |
LinkedBlockingQueue p = populatedQueue(SIZE); |
633 |
> |
for (int i = 0; i < SIZE; ++i) { |
634 |
|
boolean changed = q.retainAll(p); |
635 |
|
if (i == 0) |
636 |
|
assertFalse(changed); |
638 |
|
assertTrue(changed); |
639 |
|
|
640 |
|
assertTrue(q.containsAll(p)); |
641 |
< |
assertEquals(N-i, q.size()); |
641 |
> |
assertEquals(SIZE-i, q.size()); |
642 |
|
p.remove(); |
643 |
|
} |
644 |
|
} |
645 |
|
|
646 |
< |
public void testRemoveAll(){ |
647 |
< |
for (int i = 1; i < N; ++i) { |
648 |
< |
LinkedBlockingQueue q = fullQueue(N); |
649 |
< |
LinkedBlockingQueue p = fullQueue(i); |
646 |
> |
/** |
647 |
> |
* removeAll(c) removes only those elements of c and reports true if changed |
648 |
> |
*/ |
649 |
> |
public void testRemoveAll() { |
650 |
> |
for (int i = 1; i < SIZE; ++i) { |
651 |
> |
LinkedBlockingQueue q = populatedQueue(SIZE); |
652 |
> |
LinkedBlockingQueue p = populatedQueue(i); |
653 |
|
assertTrue(q.removeAll(p)); |
654 |
< |
assertEquals(N-i, q.size()); |
654 |
> |
assertEquals(SIZE-i, q.size()); |
655 |
|
for (int j = 0; j < i; ++j) { |
656 |
|
Integer I = (Integer)(p.remove()); |
657 |
|
assertFalse(q.contains(I)); |
659 |
|
} |
660 |
|
} |
661 |
|
|
662 |
+ |
/** |
663 |
+ |
* toArray contains all elements in FIFO order |
664 |
+ |
*/ |
665 |
+ |
public void testToArray() { |
666 |
+ |
LinkedBlockingQueue q = populatedQueue(SIZE); |
667 |
+ |
Object[] o = q.toArray(); |
668 |
+ |
for (int i = 0; i < o.length; i++) |
669 |
+ |
assertSame(o[i], q.poll()); |
670 |
+ |
} |
671 |
|
|
672 |
< |
public void testToArray(){ |
673 |
< |
LinkedBlockingQueue q = fullQueue(N); |
674 |
< |
Object[] o = q.toArray(); |
675 |
< |
try { |
676 |
< |
for(int i = 0; i < o.length; i++) |
677 |
< |
assertEquals(o[i], q.take()); |
678 |
< |
} catch (InterruptedException e){ |
679 |
< |
fail("Unexpected exception"); |
680 |
< |
} |
681 |
< |
} |
566 |
< |
|
567 |
< |
public void testToArray2(){ |
568 |
< |
LinkedBlockingQueue q = fullQueue(N); |
569 |
< |
Integer[] ints = new Integer[N]; |
570 |
< |
ints = (Integer[])q.toArray(ints); |
571 |
< |
try { |
572 |
< |
for(int i = 0; i < ints.length; i++) |
573 |
< |
assertEquals(ints[i], q.take()); |
574 |
< |
} catch (InterruptedException e){ |
575 |
< |
fail("Unexpected exception"); |
576 |
< |
} |
577 |
< |
} |
578 |
< |
|
579 |
< |
public void testIterator(){ |
580 |
< |
LinkedBlockingQueue q = fullQueue(N); |
581 |
< |
Iterator it = q.iterator(); |
582 |
< |
try { |
583 |
< |
while(it.hasNext()){ |
584 |
< |
assertEquals(it.next(), q.take()); |
585 |
< |
} |
586 |
< |
} catch (InterruptedException e){ |
587 |
< |
fail("Unexpected exception"); |
588 |
< |
} |
672 |
> |
/** |
673 |
> |
* toArray(a) contains all elements in FIFO order |
674 |
> |
*/ |
675 |
> |
public void testToArray2() throws InterruptedException { |
676 |
> |
LinkedBlockingQueue<Integer> q = populatedQueue(SIZE); |
677 |
> |
Integer[] ints = new Integer[SIZE]; |
678 |
> |
Integer[] array = q.toArray(ints); |
679 |
> |
assertSame(ints, array); |
680 |
> |
for (int i = 0; i < ints.length; i++) |
681 |
> |
assertSame(ints[i], q.poll()); |
682 |
|
} |
683 |
|
|
684 |
< |
public void testIteratorOrdering() { |
684 |
> |
/** |
685 |
> |
* toArray(null) throws NullPointerException |
686 |
> |
*/ |
687 |
> |
public void testToArray_NullArg() { |
688 |
> |
LinkedBlockingQueue q = populatedQueue(SIZE); |
689 |
> |
try { |
690 |
> |
q.toArray(null); |
691 |
> |
shouldThrow(); |
692 |
> |
} catch (NullPointerException success) {} |
693 |
> |
} |
694 |
|
|
695 |
< |
final LinkedBlockingQueue q = new LinkedBlockingQueue(3); |
695 |
> |
/** |
696 |
> |
* toArray(incompatible array type) throws ArrayStoreException |
697 |
> |
*/ |
698 |
> |
public void testToArray1_BadArg() { |
699 |
> |
LinkedBlockingQueue q = populatedQueue(SIZE); |
700 |
> |
try { |
701 |
> |
q.toArray(new String[10]); |
702 |
> |
shouldThrow(); |
703 |
> |
} catch (ArrayStoreException success) {} |
704 |
> |
} |
705 |
|
|
706 |
< |
q.add(new Integer(1)); |
707 |
< |
q.add(new Integer(2)); |
708 |
< |
q.add(new Integer(3)); |
706 |
> |
/** |
707 |
> |
* iterator iterates through all elements |
708 |
> |
*/ |
709 |
> |
public void testIterator() throws InterruptedException { |
710 |
> |
LinkedBlockingQueue q = populatedQueue(SIZE); |
711 |
> |
Iterator it = q.iterator(); |
712 |
> |
while (it.hasNext()) { |
713 |
> |
assertEquals(it.next(), q.take()); |
714 |
> |
} |
715 |
> |
} |
716 |
|
|
717 |
< |
assertEquals("queue should be full", 0, q.remainingCapacity()); |
717 |
> |
/** |
718 |
> |
* iterator.remove removes current element |
719 |
> |
*/ |
720 |
> |
public void testIteratorRemove() { |
721 |
> |
final LinkedBlockingQueue q = new LinkedBlockingQueue(3); |
722 |
> |
q.add(two); |
723 |
> |
q.add(one); |
724 |
> |
q.add(three); |
725 |
> |
|
726 |
> |
Iterator it = q.iterator(); |
727 |
> |
it.next(); |
728 |
> |
it.remove(); |
729 |
> |
|
730 |
> |
it = q.iterator(); |
731 |
> |
assertSame(it.next(), one); |
732 |
> |
assertSame(it.next(), three); |
733 |
> |
assertFalse(it.hasNext()); |
734 |
> |
} |
735 |
|
|
736 |
+ |
/** |
737 |
+ |
* iterator ordering is FIFO |
738 |
+ |
*/ |
739 |
+ |
public void testIteratorOrdering() { |
740 |
+ |
final LinkedBlockingQueue q = new LinkedBlockingQueue(3); |
741 |
+ |
q.add(one); |
742 |
+ |
q.add(two); |
743 |
+ |
q.add(three); |
744 |
+ |
assertEquals(0, q.remainingCapacity()); |
745 |
|
int k = 0; |
746 |
|
for (Iterator it = q.iterator(); it.hasNext();) { |
747 |
< |
int i = ((Integer)(it.next())).intValue(); |
604 |
< |
assertEquals("items should come out in order", ++k, i); |
747 |
> |
assertEquals(++k, it.next()); |
748 |
|
} |
749 |
< |
|
607 |
< |
assertEquals("should go through 3 elements", 3, k); |
749 |
> |
assertEquals(3, k); |
750 |
|
} |
751 |
|
|
752 |
< |
public void testWeaklyConsistentIteration () { |
753 |
< |
|
752 |
> |
/** |
753 |
> |
* Modifications do not cause iterators to fail |
754 |
> |
*/ |
755 |
> |
public void testWeaklyConsistentIteration() { |
756 |
|
final LinkedBlockingQueue q = new LinkedBlockingQueue(3); |
757 |
< |
|
758 |
< |
q.add(new Integer(1)); |
759 |
< |
q.add(new Integer(2)); |
760 |
< |
q.add(new Integer(3)); |
761 |
< |
|
762 |
< |
try { |
619 |
< |
for (Iterator it = q.iterator(); it.hasNext();) { |
620 |
< |
q.remove(); |
621 |
< |
it.next(); |
622 |
< |
} |
623 |
< |
} |
624 |
< |
catch (ConcurrentModificationException e) { |
625 |
< |
fail("weakly consistent iterator; should not get CME"); |
757 |
> |
q.add(one); |
758 |
> |
q.add(two); |
759 |
> |
q.add(three); |
760 |
> |
for (Iterator it = q.iterator(); it.hasNext();) { |
761 |
> |
q.remove(); |
762 |
> |
it.next(); |
763 |
|
} |
764 |
< |
|
628 |
< |
assertEquals("queue should be empty again", 0, q.size()); |
764 |
> |
assertEquals(0, q.size()); |
765 |
|
} |
766 |
|
|
767 |
< |
|
768 |
< |
public void testToString(){ |
769 |
< |
LinkedBlockingQueue q = fullQueue(N); |
767 |
> |
/** |
768 |
> |
* toString contains toStrings of elements |
769 |
> |
*/ |
770 |
> |
public void testToString() { |
771 |
> |
LinkedBlockingQueue q = populatedQueue(SIZE); |
772 |
|
String s = q.toString(); |
773 |
< |
for (int i = 0; i < N; ++i) { |
774 |
< |
assertTrue(s.indexOf(String.valueOf(i)) >= 0); |
773 |
> |
for (int i = 0; i < SIZE; ++i) { |
774 |
> |
assertTrue(s.contains(String.valueOf(i))); |
775 |
|
} |
776 |
< |
} |
639 |
< |
|
776 |
> |
} |
777 |
|
|
778 |
+ |
/** |
779 |
+ |
* offer transfers elements across Executor tasks |
780 |
+ |
*/ |
781 |
|
public void testOfferInExecutor() { |
642 |
– |
|
782 |
|
final LinkedBlockingQueue q = new LinkedBlockingQueue(2); |
783 |
+ |
q.add(one); |
784 |
+ |
q.add(two); |
785 |
+ |
ExecutorService executor = Executors.newFixedThreadPool(2); |
786 |
+ |
final CheckedBarrier threadsStarted = new CheckedBarrier(2); |
787 |
+ |
executor.execute(new CheckedRunnable() { |
788 |
+ |
public void realRun() throws InterruptedException { |
789 |
+ |
assertFalse(q.offer(three)); |
790 |
+ |
threadsStarted.await(); |
791 |
+ |
assertTrue(q.offer(three, LONG_DELAY_MS, MILLISECONDS)); |
792 |
+ |
assertEquals(0, q.remainingCapacity()); |
793 |
+ |
}}); |
794 |
+ |
|
795 |
+ |
executor.execute(new CheckedRunnable() { |
796 |
+ |
public void realRun() throws InterruptedException { |
797 |
+ |
threadsStarted.await(); |
798 |
+ |
assertSame(one, q.take()); |
799 |
+ |
}}); |
800 |
|
|
801 |
< |
q.add(new Integer(1)); |
802 |
< |
q.add(new Integer(2)); |
801 |
> |
joinPool(executor); |
802 |
> |
} |
803 |
|
|
804 |
+ |
/** |
805 |
+ |
* timed poll retrieves elements across Executor threads |
806 |
+ |
*/ |
807 |
+ |
public void testPollInExecutor() { |
808 |
+ |
final LinkedBlockingQueue q = new LinkedBlockingQueue(2); |
809 |
+ |
final CheckedBarrier threadsStarted = new CheckedBarrier(2); |
810 |
|
ExecutorService executor = Executors.newFixedThreadPool(2); |
811 |
+ |
executor.execute(new CheckedRunnable() { |
812 |
+ |
public void realRun() throws InterruptedException { |
813 |
+ |
assertNull(q.poll()); |
814 |
+ |
threadsStarted.await(); |
815 |
+ |
assertSame(one, q.poll(LONG_DELAY_MS, MILLISECONDS)); |
816 |
+ |
checkEmpty(q); |
817 |
+ |
}}); |
818 |
+ |
|
819 |
+ |
executor.execute(new CheckedRunnable() { |
820 |
+ |
public void realRun() throws InterruptedException { |
821 |
+ |
threadsStarted.await(); |
822 |
+ |
q.put(one); |
823 |
+ |
}}); |
824 |
|
|
825 |
< |
executor.execute(new Runnable() { |
826 |
< |
public void run() { |
652 |
< |
assertFalse("offer should be rejected", q.offer(new Integer(3))); |
653 |
< |
try { |
654 |
< |
assertTrue("offer should be accepted", q.offer(new Integer(3), MEDIUM_DELAY_MS * 2, TimeUnit.MILLISECONDS)); |
655 |
< |
assertEquals(0, q.remainingCapacity()); |
656 |
< |
} |
657 |
< |
catch (InterruptedException e) { |
658 |
< |
fail("should not be interrupted"); |
659 |
< |
} |
660 |
< |
} |
661 |
< |
}); |
825 |
> |
joinPool(executor); |
826 |
> |
} |
827 |
|
|
828 |
< |
executor.execute(new Runnable() { |
829 |
< |
public void run() { |
830 |
< |
try { |
831 |
< |
Thread.sleep(MEDIUM_DELAY_MS); |
832 |
< |
assertEquals("first item in queue should be 1", new Integer(1), q.take()); |
668 |
< |
} |
669 |
< |
catch (InterruptedException e) { |
670 |
< |
fail("should not be interrupted"); |
671 |
< |
} |
672 |
< |
} |
673 |
< |
}); |
674 |
< |
|
675 |
< |
executor.shutdown(); |
828 |
> |
/** |
829 |
> |
* A deserialized serialized queue has same elements in same order |
830 |
> |
*/ |
831 |
> |
public void testSerialization() throws Exception { |
832 |
> |
LinkedBlockingQueue q = populatedQueue(SIZE); |
833 |
|
|
834 |
+ |
ByteArrayOutputStream bout = new ByteArrayOutputStream(10000); |
835 |
+ |
ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout)); |
836 |
+ |
out.writeObject(q); |
837 |
+ |
out.close(); |
838 |
+ |
|
839 |
+ |
ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray()); |
840 |
+ |
ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin)); |
841 |
+ |
LinkedBlockingQueue r = (LinkedBlockingQueue)in.readObject(); |
842 |
+ |
assertEquals(q.size(), r.size()); |
843 |
+ |
while (!q.isEmpty()) |
844 |
+ |
assertEquals(q.remove(), r.remove()); |
845 |
|
} |
846 |
|
|
847 |
< |
public void testPollInExecutor() { |
847 |
> |
/** |
848 |
> |
* drainTo(null) throws NPE |
849 |
> |
*/ |
850 |
> |
public void testDrainToNull() { |
851 |
> |
LinkedBlockingQueue q = populatedQueue(SIZE); |
852 |
> |
try { |
853 |
> |
q.drainTo(null); |
854 |
> |
shouldThrow(); |
855 |
> |
} catch (NullPointerException success) {} |
856 |
> |
} |
857 |
|
|
858 |
< |
final LinkedBlockingQueue q = new LinkedBlockingQueue(2); |
858 |
> |
/** |
859 |
> |
* drainTo(this) throws IAE |
860 |
> |
*/ |
861 |
> |
public void testDrainToSelf() { |
862 |
> |
LinkedBlockingQueue q = populatedQueue(SIZE); |
863 |
> |
try { |
864 |
> |
q.drainTo(q); |
865 |
> |
shouldThrow(); |
866 |
> |
} catch (IllegalArgumentException success) {} |
867 |
> |
} |
868 |
|
|
869 |
< |
ExecutorService executor = Executors.newFixedThreadPool(2); |
869 |
> |
/** |
870 |
> |
* drainTo(c) empties queue into another collection c |
871 |
> |
*/ |
872 |
> |
public void testDrainTo() { |
873 |
> |
LinkedBlockingQueue q = populatedQueue(SIZE); |
874 |
> |
ArrayList l = new ArrayList(); |
875 |
> |
q.drainTo(l); |
876 |
> |
assertEquals(q.size(), 0); |
877 |
> |
assertEquals(l.size(), SIZE); |
878 |
> |
for (int i = 0; i < SIZE; ++i) |
879 |
> |
assertEquals(l.get(i), new Integer(i)); |
880 |
> |
q.add(zero); |
881 |
> |
q.add(one); |
882 |
> |
assertFalse(q.isEmpty()); |
883 |
> |
assertTrue(q.contains(zero)); |
884 |
> |
assertTrue(q.contains(one)); |
885 |
> |
l.clear(); |
886 |
> |
q.drainTo(l); |
887 |
> |
assertEquals(q.size(), 0); |
888 |
> |
assertEquals(l.size(), 2); |
889 |
> |
for (int i = 0; i < 2; ++i) |
890 |
> |
assertEquals(l.get(i), new Integer(i)); |
891 |
> |
} |
892 |
|
|
893 |
< |
executor.execute(new Runnable() { |
894 |
< |
public void run() { |
895 |
< |
assertNull("poll should fail", q.poll()); |
896 |
< |
try { |
897 |
< |
assertTrue(null != q.poll(MEDIUM_DELAY_MS * 2, TimeUnit.MILLISECONDS)); |
898 |
< |
assertTrue(q.isEmpty()); |
899 |
< |
} |
900 |
< |
catch (InterruptedException e) { |
901 |
< |
fail("should not be interrupted"); |
694 |
< |
} |
695 |
< |
} |
696 |
< |
}); |
893 |
> |
/** |
894 |
> |
* drainTo empties full queue, unblocking a waiting put. |
895 |
> |
*/ |
896 |
> |
public void testDrainToWithActivePut() throws InterruptedException { |
897 |
> |
final LinkedBlockingQueue q = populatedQueue(SIZE); |
898 |
> |
Thread t = new Thread(new CheckedRunnable() { |
899 |
> |
public void realRun() throws InterruptedException { |
900 |
> |
q.put(new Integer(SIZE+1)); |
901 |
> |
}}); |
902 |
|
|
903 |
< |
executor.execute(new Runnable() { |
904 |
< |
public void run() { |
905 |
< |
try { |
906 |
< |
Thread.sleep(MEDIUM_DELAY_MS); |
907 |
< |
q.put(new Integer(1)); |
908 |
< |
} |
909 |
< |
catch (InterruptedException e) { |
910 |
< |
fail("should not be interrupted"); |
911 |
< |
} |
912 |
< |
} |
913 |
< |
}); |
914 |
< |
|
915 |
< |
executor.shutdown(); |
903 |
> |
t.start(); |
904 |
> |
ArrayList l = new ArrayList(); |
905 |
> |
q.drainTo(l); |
906 |
> |
assertTrue(l.size() >= SIZE); |
907 |
> |
for (int i = 0; i < SIZE; ++i) |
908 |
> |
assertEquals(l.get(i), new Integer(i)); |
909 |
> |
t.join(); |
910 |
> |
assertTrue(q.size() + l.size() >= SIZE); |
911 |
> |
} |
912 |
> |
|
913 |
> |
/** |
914 |
> |
* drainTo(null, n) throws NPE |
915 |
> |
*/ |
916 |
> |
public void testDrainToNullN() { |
917 |
> |
LinkedBlockingQueue q = populatedQueue(SIZE); |
918 |
> |
try { |
919 |
> |
q.drainTo(null, 0); |
920 |
> |
shouldThrow(); |
921 |
> |
} catch (NullPointerException success) {} |
922 |
> |
} |
923 |
|
|
924 |
+ |
/** |
925 |
+ |
* drainTo(this, n) throws IAE |
926 |
+ |
*/ |
927 |
+ |
public void testDrainToSelfN() { |
928 |
+ |
LinkedBlockingQueue q = populatedQueue(SIZE); |
929 |
+ |
try { |
930 |
+ |
q.drainTo(q, 0); |
931 |
+ |
shouldThrow(); |
932 |
+ |
} catch (IllegalArgumentException success) {} |
933 |
+ |
} |
934 |
+ |
|
935 |
+ |
/** |
936 |
+ |
* drainTo(c, n) empties first min(n, size) elements of queue into c |
937 |
+ |
*/ |
938 |
+ |
public void testDrainToN() { |
939 |
+ |
LinkedBlockingQueue q = new LinkedBlockingQueue(); |
940 |
+ |
for (int i = 0; i < SIZE + 2; ++i) { |
941 |
+ |
for (int j = 0; j < SIZE; j++) |
942 |
+ |
assertTrue(q.offer(new Integer(j))); |
943 |
+ |
ArrayList l = new ArrayList(); |
944 |
+ |
q.drainTo(l, i); |
945 |
+ |
int k = (i < SIZE) ? i : SIZE; |
946 |
+ |
assertEquals(l.size(), k); |
947 |
+ |
assertEquals(q.size(), SIZE-k); |
948 |
+ |
for (int j = 0; j < k; ++j) |
949 |
+ |
assertEquals(l.get(j), new Integer(j)); |
950 |
+ |
while (q.poll() != null) ; |
951 |
+ |
} |
952 |
|
} |
953 |
|
|
954 |
|
} |