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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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*/ |
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|
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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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|
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public class ArrayBlockingQueueTest extends JSR166TestCase { |
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public static void main(String[] args) { |
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junit.textui.TestRunner.run (suite()); |
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} |
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public static Test suite() { |
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return new TestSuite(ArrayBlockingQueueTest.class); |
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} |
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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 ArrayBlockingQueue populatedQueue(int n) { |
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ArrayBlockingQueue q = new ArrayBlockingQueue(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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assertFalse(q.isEmpty()); |
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assertEquals(0, q.remainingCapacity()); |
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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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/** |
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* A new queue has the indicated capacity |
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*/ |
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public void testConstructor1() { |
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assertEquals(SIZE, new ArrayBlockingQueue(SIZE).remainingCapacity()); |
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} |
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|
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/** |
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* Constructor throws 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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ArrayBlockingQueue q = new ArrayBlockingQueue(0); |
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shouldThrow(); |
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} |
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catch (IllegalArgumentException success) {} |
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} |
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|
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/** |
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* 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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ArrayBlockingQueue q = new ArrayBlockingQueue(1, true, null); |
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shouldThrow(); |
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} |
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catch (NullPointerException success) {} |
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} |
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|
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/** |
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* Initializing from Collection of null elements throws NPE |
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*/ |
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public void testConstructor4() { |
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try { |
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Integer[] ints = new Integer[SIZE]; |
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ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE, false, Arrays.asList(ints)); |
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shouldThrow(); |
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} |
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catch (NullPointerException success) {} |
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} |
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|
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/** |
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* Initializing from Collection with some null elements throws NPE |
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*/ |
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public void testConstructor5() { |
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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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ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE, false, Arrays.asList(ints)); |
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shouldThrow(); |
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} |
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catch (NullPointerException success) {} |
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} |
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|
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/** |
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* Initializing from too large collection throws IAE |
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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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ArrayBlockingQueue q = new ArrayBlockingQueue(1, false, Arrays.asList(ints)); |
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shouldThrow(); |
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} |
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catch (IllegalArgumentException success) {} |
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} |
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|
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/** |
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* Queue contains all elements of collection used to initialize |
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*/ |
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public void testConstructor7() { |
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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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ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE, true, 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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} |
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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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ArrayBlockingQueue q = new ArrayBlockingQueue(2); |
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assertTrue(q.isEmpty()); |
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assertEquals(2, q.remainingCapacity()); |
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q.add(one); |
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assertFalse(q.isEmpty()); |
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q.add(two); |
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assertFalse(q.isEmpty()); |
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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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/** |
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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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ArrayBlockingQueue 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(SIZE-i, q.size()); |
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q.remove(); |
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} |
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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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/** |
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* offer(null) throws NPE |
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*/ |
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public void testOfferNull() { |
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try { |
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ArrayBlockingQueue q = new ArrayBlockingQueue(1); |
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q.offer(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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/** |
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* add(null) throws NPE |
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*/ |
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public void testAddNull() { |
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try { |
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ArrayBlockingQueue q = new ArrayBlockingQueue(1); |
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q.add(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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/** |
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* Offer succeeds if not full; fails if full |
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*/ |
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public void testOffer() { |
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ArrayBlockingQueue q = new ArrayBlockingQueue(1); |
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assertTrue(q.offer(zero)); |
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assertFalse(q.offer(one)); |
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} |
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|
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/** |
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* add succeeds if not full; throws ISE if full |
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*/ |
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public void testAdd() { |
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try { |
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ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE); |
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for (int i = 0; i < SIZE; ++i) { |
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assertTrue(q.add(new Integer(i))); |
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} |
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assertEquals(0, q.remainingCapacity()); |
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q.add(new Integer(SIZE)); |
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} catch (IllegalStateException success){ |
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} |
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} |
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|
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/** |
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* addAll(null) throws NPE |
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*/ |
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public void testAddAll1() { |
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try { |
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ArrayBlockingQueue q = new ArrayBlockingQueue(1); |
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q.addAll(null); |
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shouldThrow(); |
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} |
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catch (NullPointerException success) {} |
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} |
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|
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/** |
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* addAll(this) throws IAE |
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*/ |
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public void testAddAllSelf() { |
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try { |
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ArrayBlockingQueue q = populatedQueue(SIZE); |
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q.addAll(q); |
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shouldThrow(); |
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} |
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catch (IllegalArgumentException success) {} |
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} |
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|
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|
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/** |
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* addAll of a collection with null elements throws NPE |
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*/ |
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public void testAddAll2() { |
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try { |
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ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE); |
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Integer[] ints = new Integer[SIZE]; |
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q.addAll(Arrays.asList(ints)); |
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shouldThrow(); |
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} |
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catch (NullPointerException success) {} |
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} |
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/** |
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* addAll of a collection with any null elements throws NPE after |
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* possibly adding some elements |
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*/ |
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public void testAddAll3() { |
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try { |
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ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE); |
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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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q.addAll(Arrays.asList(ints)); |
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shouldThrow(); |
248 |
} |
249 |
catch (NullPointerException success) {} |
250 |
} |
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/** |
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* addAll throws ISE if not enough room |
253 |
*/ |
254 |
public void testAddAll4() { |
255 |
try { |
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ArrayBlockingQueue q = new ArrayBlockingQueue(1); |
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Integer[] ints = new Integer[SIZE]; |
258 |
for (int i = 0; i < SIZE; ++i) |
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ints[i] = new Integer(i); |
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q.addAll(Arrays.asList(ints)); |
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shouldThrow(); |
262 |
} |
263 |
catch (IllegalStateException success) {} |
264 |
} |
265 |
/** |
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* Queue contains all elements, in traversal order, of successful addAll |
267 |
*/ |
268 |
public void testAddAll5() { |
269 |
try { |
270 |
Integer[] empty = new Integer[0]; |
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Integer[] ints = new Integer[SIZE]; |
272 |
for (int i = 0; i < SIZE; ++i) |
273 |
ints[i] = new Integer(i); |
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ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE); |
275 |
assertFalse(q.addAll(Arrays.asList(empty))); |
276 |
assertTrue(q.addAll(Arrays.asList(ints))); |
277 |
for (int i = 0; i < SIZE; ++i) |
278 |
assertEquals(ints[i], q.poll()); |
279 |
} |
280 |
finally {} |
281 |
} |
282 |
|
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/** |
284 |
* put(null) throws NPE |
285 |
*/ |
286 |
public void testPutNull() { |
287 |
try { |
288 |
ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE); |
289 |
q.put(null); |
290 |
shouldThrow(); |
291 |
} |
292 |
catch (NullPointerException success){ |
293 |
} |
294 |
catch (InterruptedException ie) { |
295 |
unexpectedException(); |
296 |
} |
297 |
} |
298 |
|
299 |
/** |
300 |
* all elements successfully put are contained |
301 |
*/ |
302 |
public void testPut() { |
303 |
try { |
304 |
ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE); |
305 |
for (int i = 0; i < SIZE; ++i) { |
306 |
Integer I = new Integer(i); |
307 |
q.put(I); |
308 |
assertTrue(q.contains(I)); |
309 |
} |
310 |
assertEquals(0, q.remainingCapacity()); |
311 |
} |
312 |
catch (InterruptedException ie) { |
313 |
unexpectedException(); |
314 |
} |
315 |
} |
316 |
|
317 |
/** |
318 |
* put blocks interruptibly if full |
319 |
*/ |
320 |
public void testBlockingPut() { |
321 |
Thread t = new Thread(new Runnable() { |
322 |
public void run() { |
323 |
int added = 0; |
324 |
try { |
325 |
ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE); |
326 |
for (int i = 0; i < SIZE; ++i) { |
327 |
q.put(new Integer(i)); |
328 |
++added; |
329 |
} |
330 |
q.put(new Integer(SIZE)); |
331 |
threadShouldThrow(); |
332 |
} catch (InterruptedException ie){ |
333 |
threadAssertEquals(added, SIZE); |
334 |
} |
335 |
}}); |
336 |
try { |
337 |
t.start(); |
338 |
Thread.sleep(SHORT_DELAY_MS); |
339 |
t.interrupt(); |
340 |
t.join(); |
341 |
} |
342 |
catch (InterruptedException ie) { |
343 |
unexpectedException(); |
344 |
} |
345 |
} |
346 |
|
347 |
/** |
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* put blocks waiting for take when full |
349 |
*/ |
350 |
public void testPutWithTake() { |
351 |
final ArrayBlockingQueue q = new ArrayBlockingQueue(2); |
352 |
Thread t = new Thread(new Runnable() { |
353 |
public void run() { |
354 |
int added = 0; |
355 |
try { |
356 |
q.put(new Object()); |
357 |
++added; |
358 |
q.put(new Object()); |
359 |
++added; |
360 |
q.put(new Object()); |
361 |
++added; |
362 |
q.put(new Object()); |
363 |
++added; |
364 |
threadShouldThrow(); |
365 |
} catch (InterruptedException e){ |
366 |
threadAssertTrue(added >= 2); |
367 |
} |
368 |
} |
369 |
}); |
370 |
try { |
371 |
t.start(); |
372 |
Thread.sleep(SHORT_DELAY_MS); |
373 |
q.take(); |
374 |
t.interrupt(); |
375 |
t.join(); |
376 |
} catch (Exception e){ |
377 |
unexpectedException(); |
378 |
} |
379 |
} |
380 |
|
381 |
/** |
382 |
* timed offer times out if full and elements not taken |
383 |
*/ |
384 |
public void testTimedOffer() { |
385 |
final ArrayBlockingQueue q = new ArrayBlockingQueue(2); |
386 |
Thread t = new Thread(new Runnable() { |
387 |
public void run() { |
388 |
try { |
389 |
q.put(new Object()); |
390 |
q.put(new Object()); |
391 |
threadAssertFalse(q.offer(new Object(), SHORT_DELAY_MS/2, TimeUnit.MILLISECONDS)); |
392 |
q.offer(new Object(), LONG_DELAY_MS, TimeUnit.MILLISECONDS); |
393 |
threadShouldThrow(); |
394 |
} catch (InterruptedException success){} |
395 |
} |
396 |
}); |
397 |
|
398 |
try { |
399 |
t.start(); |
400 |
Thread.sleep(SHORT_DELAY_MS); |
401 |
t.interrupt(); |
402 |
t.join(); |
403 |
} catch (Exception e){ |
404 |
unexpectedException(); |
405 |
} |
406 |
} |
407 |
|
408 |
/** |
409 |
* take retrieves elements in FIFO order |
410 |
*/ |
411 |
public void testTake() { |
412 |
try { |
413 |
ArrayBlockingQueue q = populatedQueue(SIZE); |
414 |
for (int i = 0; i < SIZE; ++i) { |
415 |
assertEquals(i, ((Integer)q.take()).intValue()); |
416 |
} |
417 |
} catch (InterruptedException e){ |
418 |
unexpectedException(); |
419 |
} |
420 |
} |
421 |
|
422 |
/** |
423 |
* take blocks interruptibly when empty |
424 |
*/ |
425 |
public void testTakeFromEmpty() { |
426 |
final ArrayBlockingQueue q = new ArrayBlockingQueue(2); |
427 |
Thread t = new Thread(new Runnable() { |
428 |
public void run() { |
429 |
try { |
430 |
q.take(); |
431 |
threadShouldThrow(); |
432 |
} catch (InterruptedException success){ } |
433 |
} |
434 |
}); |
435 |
try { |
436 |
t.start(); |
437 |
Thread.sleep(SHORT_DELAY_MS); |
438 |
t.interrupt(); |
439 |
t.join(); |
440 |
} catch (Exception e){ |
441 |
unexpectedException(); |
442 |
} |
443 |
} |
444 |
|
445 |
/** |
446 |
* Take removes existing elements until empty, then blocks interruptibly |
447 |
*/ |
448 |
public void testBlockingTake() { |
449 |
Thread t = new Thread(new Runnable() { |
450 |
public void run() { |
451 |
try { |
452 |
ArrayBlockingQueue q = populatedQueue(SIZE); |
453 |
for (int i = 0; i < SIZE; ++i) { |
454 |
threadAssertEquals(i, ((Integer)q.take()).intValue()); |
455 |
} |
456 |
q.take(); |
457 |
threadShouldThrow(); |
458 |
} catch (InterruptedException success){ |
459 |
} |
460 |
}}); |
461 |
try { |
462 |
t.start(); |
463 |
Thread.sleep(SHORT_DELAY_MS); |
464 |
t.interrupt(); |
465 |
t.join(); |
466 |
} |
467 |
catch (InterruptedException ie) { |
468 |
unexpectedException(); |
469 |
} |
470 |
} |
471 |
|
472 |
|
473 |
/** |
474 |
* poll succeeds unless empty |
475 |
*/ |
476 |
public void testPoll() { |
477 |
ArrayBlockingQueue q = populatedQueue(SIZE); |
478 |
for (int i = 0; i < SIZE; ++i) { |
479 |
assertEquals(i, ((Integer)q.poll()).intValue()); |
480 |
} |
481 |
assertNull(q.poll()); |
482 |
} |
483 |
|
484 |
/** |
485 |
* timed pool with zero timeout succeeds when non-empty, else times out |
486 |
*/ |
487 |
public void testTimedPoll0() { |
488 |
try { |
489 |
ArrayBlockingQueue q = populatedQueue(SIZE); |
490 |
for (int i = 0; i < SIZE; ++i) { |
491 |
assertEquals(i, ((Integer)q.poll(0, TimeUnit.MILLISECONDS)).intValue()); |
492 |
} |
493 |
assertNull(q.poll(0, TimeUnit.MILLISECONDS)); |
494 |
} catch (InterruptedException e){ |
495 |
unexpectedException(); |
496 |
} |
497 |
} |
498 |
|
499 |
/** |
500 |
* timed pool with nonzero timeout succeeds when non-empty, else times out |
501 |
*/ |
502 |
public void testTimedPoll() { |
503 |
try { |
504 |
ArrayBlockingQueue q = populatedQueue(SIZE); |
505 |
for (int i = 0; i < SIZE; ++i) { |
506 |
assertEquals(i, ((Integer)q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS)).intValue()); |
507 |
} |
508 |
assertNull(q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS)); |
509 |
} catch (InterruptedException e){ |
510 |
unexpectedException(); |
511 |
} |
512 |
} |
513 |
|
514 |
/** |
515 |
* Interrupted timed poll throws InterruptedException instead of |
516 |
* returning timeout status |
517 |
*/ |
518 |
public void testInterruptedTimedPoll() { |
519 |
Thread t = new Thread(new Runnable() { |
520 |
public void run() { |
521 |
try { |
522 |
ArrayBlockingQueue q = populatedQueue(SIZE); |
523 |
for (int i = 0; i < SIZE; ++i) { |
524 |
threadAssertEquals(i, ((Integer)q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS)).intValue()); |
525 |
} |
526 |
threadAssertNull(q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS)); |
527 |
} catch (InterruptedException success){ |
528 |
} |
529 |
}}); |
530 |
try { |
531 |
t.start(); |
532 |
Thread.sleep(SHORT_DELAY_MS); |
533 |
t.interrupt(); |
534 |
t.join(); |
535 |
} |
536 |
catch (InterruptedException ie) { |
537 |
unexpectedException(); |
538 |
} |
539 |
} |
540 |
|
541 |
/** |
542 |
* timed poll before a delayed offer fails; after offer succeeds; |
543 |
* on interruption throws |
544 |
*/ |
545 |
public void testTimedPollWithOffer() { |
546 |
final ArrayBlockingQueue q = new ArrayBlockingQueue(2); |
547 |
Thread t = new Thread(new Runnable() { |
548 |
public void run() { |
549 |
try { |
550 |
threadAssertNull(q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS)); |
551 |
q.poll(LONG_DELAY_MS, TimeUnit.MILLISECONDS); |
552 |
q.poll(LONG_DELAY_MS, TimeUnit.MILLISECONDS); |
553 |
threadShouldThrow(); |
554 |
} catch (InterruptedException success) { } |
555 |
} |
556 |
}); |
557 |
try { |
558 |
t.start(); |
559 |
Thread.sleep(SMALL_DELAY_MS); |
560 |
assertTrue(q.offer(zero, SHORT_DELAY_MS, TimeUnit.MILLISECONDS)); |
561 |
t.interrupt(); |
562 |
t.join(); |
563 |
} catch (Exception e){ |
564 |
unexpectedException(); |
565 |
} |
566 |
} |
567 |
|
568 |
|
569 |
/** |
570 |
* peek returns next element, or null if empty |
571 |
*/ |
572 |
public void testPeek() { |
573 |
ArrayBlockingQueue q = populatedQueue(SIZE); |
574 |
for (int i = 0; i < SIZE; ++i) { |
575 |
assertEquals(i, ((Integer)q.peek()).intValue()); |
576 |
q.poll(); |
577 |
assertTrue(q.peek() == null || |
578 |
i != ((Integer)q.peek()).intValue()); |
579 |
} |
580 |
assertNull(q.peek()); |
581 |
} |
582 |
|
583 |
/** |
584 |
* element returns next element, or throws NSEE if empty |
585 |
*/ |
586 |
public void testElement() { |
587 |
ArrayBlockingQueue q = populatedQueue(SIZE); |
588 |
for (int i = 0; i < SIZE; ++i) { |
589 |
assertEquals(i, ((Integer)q.element()).intValue()); |
590 |
q.poll(); |
591 |
} |
592 |
try { |
593 |
q.element(); |
594 |
shouldThrow(); |
595 |
} |
596 |
catch (NoSuchElementException success) {} |
597 |
} |
598 |
|
599 |
/** |
600 |
* remove removes next element, or throws NSEE if empty |
601 |
*/ |
602 |
public void testRemove() { |
603 |
ArrayBlockingQueue q = populatedQueue(SIZE); |
604 |
for (int i = 0; i < SIZE; ++i) { |
605 |
assertEquals(i, ((Integer)q.remove()).intValue()); |
606 |
} |
607 |
try { |
608 |
q.remove(); |
609 |
shouldThrow(); |
610 |
} catch (NoSuchElementException success){ |
611 |
} |
612 |
} |
613 |
|
614 |
/** |
615 |
* remove(x) removes x and returns true if present |
616 |
*/ |
617 |
public void testRemoveElement() { |
618 |
ArrayBlockingQueue q = populatedQueue(SIZE); |
619 |
for (int i = 1; i < SIZE; i+=2) { |
620 |
assertTrue(q.remove(new Integer(i))); |
621 |
} |
622 |
for (int i = 0; i < SIZE; i+=2) { |
623 |
assertTrue(q.remove(new Integer(i))); |
624 |
assertFalse(q.remove(new Integer(i+1))); |
625 |
} |
626 |
assertTrue(q.isEmpty()); |
627 |
} |
628 |
|
629 |
/** |
630 |
* contains(x) reports true when elements added but not yet removed |
631 |
*/ |
632 |
public void testContains() { |
633 |
ArrayBlockingQueue q = populatedQueue(SIZE); |
634 |
for (int i = 0; i < SIZE; ++i) { |
635 |
assertTrue(q.contains(new Integer(i))); |
636 |
q.poll(); |
637 |
assertFalse(q.contains(new Integer(i))); |
638 |
} |
639 |
} |
640 |
|
641 |
/** |
642 |
* clear removes all elements |
643 |
*/ |
644 |
public void testClear() { |
645 |
ArrayBlockingQueue q = populatedQueue(SIZE); |
646 |
q.clear(); |
647 |
assertTrue(q.isEmpty()); |
648 |
assertEquals(0, q.size()); |
649 |
assertEquals(SIZE, q.remainingCapacity()); |
650 |
q.add(one); |
651 |
assertFalse(q.isEmpty()); |
652 |
q.clear(); |
653 |
assertTrue(q.isEmpty()); |
654 |
} |
655 |
|
656 |
/** |
657 |
* containsAll(c) is true when c contains a subset of elements |
658 |
*/ |
659 |
public void testContainsAll() { |
660 |
ArrayBlockingQueue q = populatedQueue(SIZE); |
661 |
ArrayBlockingQueue p = new ArrayBlockingQueue(SIZE); |
662 |
for (int i = 0; i < SIZE; ++i) { |
663 |
assertTrue(q.containsAll(p)); |
664 |
assertFalse(p.containsAll(q)); |
665 |
p.add(new Integer(i)); |
666 |
} |
667 |
assertTrue(p.containsAll(q)); |
668 |
} |
669 |
|
670 |
/** |
671 |
* retainAll(c) retains only those elements of c and reports true if changed |
672 |
*/ |
673 |
public void testRetainAll() { |
674 |
ArrayBlockingQueue q = populatedQueue(SIZE); |
675 |
ArrayBlockingQueue p = populatedQueue(SIZE); |
676 |
for (int i = 0; i < SIZE; ++i) { |
677 |
boolean changed = q.retainAll(p); |
678 |
if (i == 0) |
679 |
assertFalse(changed); |
680 |
else |
681 |
assertTrue(changed); |
682 |
|
683 |
assertTrue(q.containsAll(p)); |
684 |
assertEquals(SIZE-i, q.size()); |
685 |
p.remove(); |
686 |
} |
687 |
} |
688 |
|
689 |
/** |
690 |
* removeAll(c) removes only those elements of c and reports true if changed |
691 |
*/ |
692 |
public void testRemoveAll() { |
693 |
for (int i = 1; i < SIZE; ++i) { |
694 |
ArrayBlockingQueue q = populatedQueue(SIZE); |
695 |
ArrayBlockingQueue p = populatedQueue(i); |
696 |
assertTrue(q.removeAll(p)); |
697 |
assertEquals(SIZE-i, q.size()); |
698 |
for (int j = 0; j < i; ++j) { |
699 |
Integer I = (Integer)(p.remove()); |
700 |
assertFalse(q.contains(I)); |
701 |
} |
702 |
} |
703 |
} |
704 |
|
705 |
/** |
706 |
* toArray contains all elements |
707 |
*/ |
708 |
public void testToArray() { |
709 |
ArrayBlockingQueue q = populatedQueue(SIZE); |
710 |
Object[] o = q.toArray(); |
711 |
try { |
712 |
for(int i = 0; i < o.length; i++) |
713 |
assertEquals(o[i], q.take()); |
714 |
} catch (InterruptedException e){ |
715 |
unexpectedException(); |
716 |
} |
717 |
} |
718 |
|
719 |
/** |
720 |
* toArray(a) contains all elements |
721 |
*/ |
722 |
public void testToArray2() { |
723 |
ArrayBlockingQueue q = populatedQueue(SIZE); |
724 |
Integer[] ints = new Integer[SIZE]; |
725 |
ints = (Integer[])q.toArray(ints); |
726 |
try { |
727 |
for(int i = 0; i < ints.length; i++) |
728 |
assertEquals(ints[i], q.take()); |
729 |
} catch (InterruptedException e){ |
730 |
unexpectedException(); |
731 |
} |
732 |
} |
733 |
|
734 |
/** |
735 |
* toArray(null) throws NPE |
736 |
*/ |
737 |
public void testToArray_BadArg() { |
738 |
try { |
739 |
ArrayBlockingQueue q = populatedQueue(SIZE); |
740 |
Object o[] = q.toArray(null); |
741 |
shouldThrow(); |
742 |
} catch(NullPointerException success){} |
743 |
} |
744 |
|
745 |
/** |
746 |
* toArray with incompatable array type throws CCE |
747 |
*/ |
748 |
public void testToArray1_BadArg() { |
749 |
try { |
750 |
ArrayBlockingQueue q = populatedQueue(SIZE); |
751 |
Object o[] = q.toArray(new String[10] ); |
752 |
shouldThrow(); |
753 |
} catch(ArrayStoreException success){} |
754 |
} |
755 |
|
756 |
|
757 |
/** |
758 |
* iterator iterates through all elements |
759 |
*/ |
760 |
public void testIterator() { |
761 |
ArrayBlockingQueue q = populatedQueue(SIZE); |
762 |
Iterator it = q.iterator(); |
763 |
try { |
764 |
while(it.hasNext()){ |
765 |
assertEquals(it.next(), q.take()); |
766 |
} |
767 |
} catch (InterruptedException e){ |
768 |
unexpectedException(); |
769 |
} |
770 |
} |
771 |
|
772 |
/** |
773 |
* iterator.remove removes current element |
774 |
*/ |
775 |
public void testIteratorRemove () { |
776 |
final ArrayBlockingQueue q = new ArrayBlockingQueue(3); |
777 |
q.add(two); |
778 |
q.add(one); |
779 |
q.add(three); |
780 |
|
781 |
Iterator it = q.iterator(); |
782 |
it.next(); |
783 |
it.remove(); |
784 |
|
785 |
it = q.iterator(); |
786 |
assertEquals(it.next(), one); |
787 |
assertEquals(it.next(), three); |
788 |
assertFalse(it.hasNext()); |
789 |
} |
790 |
|
791 |
/** |
792 |
* iterator ordering is FIFO |
793 |
*/ |
794 |
public void testIteratorOrdering() { |
795 |
final ArrayBlockingQueue q = new ArrayBlockingQueue(3); |
796 |
q.add(one); |
797 |
q.add(two); |
798 |
q.add(three); |
799 |
|
800 |
assertEquals("queue should be full", 0, q.remainingCapacity()); |
801 |
|
802 |
int k = 0; |
803 |
for (Iterator it = q.iterator(); it.hasNext();) { |
804 |
int i = ((Integer)(it.next())).intValue(); |
805 |
assertEquals(++k, i); |
806 |
} |
807 |
assertEquals(3, k); |
808 |
} |
809 |
|
810 |
/** |
811 |
* Modifications do not cause iterators to fail |
812 |
*/ |
813 |
public void testWeaklyConsistentIteration () { |
814 |
final ArrayBlockingQueue q = new ArrayBlockingQueue(3); |
815 |
q.add(one); |
816 |
q.add(two); |
817 |
q.add(three); |
818 |
try { |
819 |
for (Iterator it = q.iterator(); it.hasNext();) { |
820 |
q.remove(); |
821 |
it.next(); |
822 |
} |
823 |
} |
824 |
catch (ConcurrentModificationException e) { |
825 |
unexpectedException(); |
826 |
} |
827 |
assertEquals(0, q.size()); |
828 |
} |
829 |
|
830 |
|
831 |
/** |
832 |
* toString contains toStrings of elements |
833 |
*/ |
834 |
public void testToString() { |
835 |
ArrayBlockingQueue q = populatedQueue(SIZE); |
836 |
String s = q.toString(); |
837 |
for (int i = 0; i < SIZE; ++i) { |
838 |
assertTrue(s.indexOf(String.valueOf(i)) >= 0); |
839 |
} |
840 |
} |
841 |
|
842 |
|
843 |
/** |
844 |
* offer transfers elements across Executor tasks |
845 |
*/ |
846 |
public void testOfferInExecutor() { |
847 |
final ArrayBlockingQueue q = new ArrayBlockingQueue(2); |
848 |
q.add(one); |
849 |
q.add(two); |
850 |
ExecutorService executor = Executors.newFixedThreadPool(2); |
851 |
executor.execute(new Runnable() { |
852 |
public void run() { |
853 |
threadAssertFalse(q.offer(three)); |
854 |
try { |
855 |
threadAssertTrue(q.offer(three, MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS)); |
856 |
threadAssertEquals(0, q.remainingCapacity()); |
857 |
} |
858 |
catch (InterruptedException e) { |
859 |
threadUnexpectedException(); |
860 |
} |
861 |
} |
862 |
}); |
863 |
|
864 |
executor.execute(new Runnable() { |
865 |
public void run() { |
866 |
try { |
867 |
Thread.sleep(SMALL_DELAY_MS); |
868 |
threadAssertEquals(one, q.take()); |
869 |
} |
870 |
catch (InterruptedException e) { |
871 |
threadUnexpectedException(); |
872 |
} |
873 |
} |
874 |
}); |
875 |
|
876 |
joinPool(executor); |
877 |
|
878 |
} |
879 |
|
880 |
/** |
881 |
* poll retrieves elements across Executor threads |
882 |
*/ |
883 |
public void testPollInExecutor() { |
884 |
final ArrayBlockingQueue q = new ArrayBlockingQueue(2); |
885 |
ExecutorService executor = Executors.newFixedThreadPool(2); |
886 |
executor.execute(new Runnable() { |
887 |
public void run() { |
888 |
threadAssertNull(q.poll()); |
889 |
try { |
890 |
threadAssertTrue(null != q.poll(MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS)); |
891 |
threadAssertTrue(q.isEmpty()); |
892 |
} |
893 |
catch (InterruptedException e) { |
894 |
threadUnexpectedException(); |
895 |
} |
896 |
} |
897 |
}); |
898 |
|
899 |
executor.execute(new Runnable() { |
900 |
public void run() { |
901 |
try { |
902 |
Thread.sleep(SMALL_DELAY_MS); |
903 |
q.put(one); |
904 |
} |
905 |
catch (InterruptedException e) { |
906 |
threadUnexpectedException(); |
907 |
} |
908 |
} |
909 |
}); |
910 |
|
911 |
joinPool(executor); |
912 |
} |
913 |
|
914 |
/** |
915 |
* A deserialized serialized queue has same elements in same order |
916 |
*/ |
917 |
public void testSerialization() { |
918 |
ArrayBlockingQueue q = populatedQueue(SIZE); |
919 |
|
920 |
try { |
921 |
ByteArrayOutputStream bout = new ByteArrayOutputStream(10000); |
922 |
ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout)); |
923 |
out.writeObject(q); |
924 |
out.close(); |
925 |
|
926 |
ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray()); |
927 |
ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin)); |
928 |
ArrayBlockingQueue r = (ArrayBlockingQueue)in.readObject(); |
929 |
assertEquals(q.size(), r.size()); |
930 |
while (!q.isEmpty()) |
931 |
assertEquals(q.remove(), r.remove()); |
932 |
} catch(Exception e){ |
933 |
unexpectedException(); |
934 |
} |
935 |
} |
936 |
|
937 |
/** |
938 |
* drainTo(null) throws NPE |
939 |
*/ |
940 |
public void testDrainToNull() { |
941 |
ArrayBlockingQueue q = populatedQueue(SIZE); |
942 |
try { |
943 |
q.drainTo(null); |
944 |
shouldThrow(); |
945 |
} catch(NullPointerException success) { |
946 |
} |
947 |
} |
948 |
|
949 |
/** |
950 |
* drainTo(this) throws IAE |
951 |
*/ |
952 |
public void testDrainToSelf() { |
953 |
ArrayBlockingQueue q = populatedQueue(SIZE); |
954 |
try { |
955 |
q.drainTo(q); |
956 |
shouldThrow(); |
957 |
} catch(IllegalArgumentException success) { |
958 |
} |
959 |
} |
960 |
|
961 |
/** |
962 |
* drainTo(c) empties queue into another collection c |
963 |
*/ |
964 |
public void testDrainTo() { |
965 |
ArrayBlockingQueue q = populatedQueue(SIZE); |
966 |
ArrayList l = new ArrayList(); |
967 |
q.drainTo(l); |
968 |
assertEquals(q.size(), 0); |
969 |
assertEquals(l.size(), SIZE); |
970 |
for (int i = 0; i < SIZE; ++i) |
971 |
assertEquals(l.get(i), new Integer(i)); |
972 |
} |
973 |
|
974 |
/** |
975 |
* drainTo empties full queue, unblocking a waiting put. |
976 |
*/ |
977 |
public void testDrainToWithActivePut() { |
978 |
final ArrayBlockingQueue q = populatedQueue(SIZE); |
979 |
Thread t = new Thread(new Runnable() { |
980 |
public void run() { |
981 |
try { |
982 |
q.put(new Integer(SIZE+1)); |
983 |
} catch (InterruptedException ie){ |
984 |
threadUnexpectedException(); |
985 |
} |
986 |
} |
987 |
}); |
988 |
try { |
989 |
t.start(); |
990 |
ArrayList l = new ArrayList(); |
991 |
q.drainTo(l); |
992 |
assertTrue(l.size() >= SIZE); |
993 |
for (int i = 0; i < SIZE; ++i) |
994 |
assertEquals(l.get(i), new Integer(i)); |
995 |
t.join(); |
996 |
assertTrue(q.size() + l.size() == SIZE+1); |
997 |
} catch(Exception e){ |
998 |
unexpectedException(); |
999 |
} |
1000 |
} |
1001 |
|
1002 |
/** |
1003 |
* drainTo(null, n) throws NPE |
1004 |
*/ |
1005 |
public void testDrainToNullN() { |
1006 |
ArrayBlockingQueue q = populatedQueue(SIZE); |
1007 |
try { |
1008 |
q.drainTo(null, 0); |
1009 |
shouldThrow(); |
1010 |
} catch(NullPointerException success) { |
1011 |
} |
1012 |
} |
1013 |
|
1014 |
/** |
1015 |
* drainTo(this, n) throws IAE |
1016 |
*/ |
1017 |
public void testDrainToSelfN() { |
1018 |
ArrayBlockingQueue q = populatedQueue(SIZE); |
1019 |
try { |
1020 |
q.drainTo(q, 0); |
1021 |
shouldThrow(); |
1022 |
} catch(IllegalArgumentException success) { |
1023 |
} |
1024 |
} |
1025 |
|
1026 |
/** |
1027 |
* drainTo(c, n) empties first max {n, size} elements of queue into c |
1028 |
*/ |
1029 |
public void testDrainToN() { |
1030 |
for (int i = 0; i < SIZE + 2; ++i) { |
1031 |
ArrayBlockingQueue q = populatedQueue(SIZE); |
1032 |
ArrayList l = new ArrayList(); |
1033 |
q.drainTo(l, i); |
1034 |
int k = (i < SIZE)? i : SIZE; |
1035 |
assertEquals(q.size(), SIZE-k); |
1036 |
assertEquals(l.size(), k); |
1037 |
for (int j = 0; j < k; ++j) |
1038 |
assertEquals(l.get(j), new Integer(j)); |
1039 |
} |
1040 |
} |
1041 |
|
1042 |
|
1043 |
} |