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/* |
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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/licenses/publicdomain |
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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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import java.util.ArrayList; |
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import java.util.Arrays; |
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import java.util.Collection; |
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import java.util.Collections; |
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import java.util.Iterator; |
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import java.util.NoSuchElementException; |
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import java.util.Queue; |
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import java.util.concurrent.ArrayBlockingQueue; |
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import java.util.concurrent.BlockingQueue; |
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import java.util.concurrent.CountDownLatch; |
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import java.util.concurrent.Executors; |
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import java.util.concurrent.ExecutorService; |
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import java.util.concurrent.ThreadLocalRandom; |
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|
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import junit.framework.Test; |
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|
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public class ArrayBlockingQueueTest extends JSR166TestCase { |
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|
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public static void main(String[] args) { |
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junit.textui.TestRunner.run (suite()); |
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main(suite(), args); |
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} |
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|
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public static Test suite() { |
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return new TestSuite(ArrayBlockingQueueTest.class); |
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class Implementation implements CollectionImplementation { |
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public Class<?> klazz() { return ArrayBlockingQueue.class; } |
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public Collection emptyCollection() { |
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boolean fair = ThreadLocalRandom.current().nextBoolean(); |
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return populatedQueue(0, SIZE, 2 * SIZE, fair); |
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} |
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public Object makeElement(int i) { return i; } |
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public boolean isConcurrent() { return true; } |
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public boolean permitsNulls() { return false; } |
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} |
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|
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return newTestSuite( |
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ArrayBlockingQueueTest.class, |
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new Fair().testSuite(), |
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new NonFair().testSuite(), |
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CollectionTest.testSuite(new Implementation())); |
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} |
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|
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public static class Fair extends BlockingQueueTest { |
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protected BlockingQueue emptyCollection() { |
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return populatedQueue(0, SIZE, 2 * SIZE, true); |
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} |
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} |
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|
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public static class NonFair extends BlockingQueueTest { |
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protected BlockingQueue emptyCollection() { |
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return populatedQueue(0, SIZE, 2 * SIZE, false); |
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} |
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} |
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|
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/** |
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* Returns a new queue of given size containing consecutive |
66 |
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* Integers 0 ... n - 1. |
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*/ |
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static ArrayBlockingQueue<Integer> populatedQueue(int n) { |
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return populatedQueue(n, n, n, false); |
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} |
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|
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/** |
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* Create a queue of given size containing consecutive |
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* Integers 0 ... n. |
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* Returns a new queue of given size containing consecutive |
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* Integers 0 ... n - 1, with given capacity range and fairness. |
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*/ |
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private ArrayBlockingQueue populatedQueue(int n) { |
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ArrayBlockingQueue q = new ArrayBlockingQueue(n); |
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static ArrayBlockingQueue<Integer> populatedQueue( |
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int size, int minCapacity, int maxCapacity, boolean fair) { |
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ThreadLocalRandom rnd = ThreadLocalRandom.current(); |
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int capacity = rnd.nextInt(minCapacity, maxCapacity + 1); |
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ArrayBlockingQueue<Integer> q = new ArrayBlockingQueue<>(capacity); |
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assertTrue(q.isEmpty()); |
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for (int i = 0; i < n; i++) |
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assertTrue(q.offer(new Integer(i))); |
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assertFalse(q.isEmpty()); |
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assertEquals(0, q.remainingCapacity()); |
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assertEquals(n, q.size()); |
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// shuffle circular array elements so they wrap |
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{ |
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int n = rnd.nextInt(capacity); |
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for (int i = 0; i < n; i++) q.add(42); |
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for (int i = 0; i < n; i++) q.remove(); |
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} |
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for (int i = 0; i < size; i++) |
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assertTrue(q.offer((Integer) i)); |
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assertEquals(size == 0, q.isEmpty()); |
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assertEquals(capacity - size, q.remainingCapacity()); |
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assertEquals(size, q.size()); |
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if (size > 0) |
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assertEquals((Integer) 0, q.peek()); |
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return q; |
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} |
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|
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/** |
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* 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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} catch (IllegalArgumentException success) {} |
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public void testConstructor_nonPositiveCapacity() { |
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for (int i : new int[] { 0, -1, Integer.MIN_VALUE }) { |
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try { |
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new ArrayBlockingQueue(i); |
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shouldThrow(); |
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} catch (IllegalArgumentException success) {} |
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for (boolean fair : new boolean[] { true, false }) { |
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try { |
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new ArrayBlockingQueue(i, fair); |
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shouldThrow(); |
118 |
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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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/** |
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* Initializing from null Collection throws NPE |
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*/ |
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public void testConstructor3() { |
126 |
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public void testConstructor_nullCollection() { |
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try { |
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ArrayBlockingQueue q = new ArrayBlockingQueue(1, true, null); |
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new ArrayBlockingQueue(1, true, null); |
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shouldThrow(); |
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} catch (NullPointerException success) {} |
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} |
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* Initializing from Collection of null elements throws NPE |
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*/ |
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public void testConstructor4() { |
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Collection<Integer> elements = Arrays.asList(new Integer[SIZE]); |
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try { |
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Integer[] ints = new Integer[SIZE]; |
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ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE, false, Arrays.asList(ints)); |
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new ArrayBlockingQueue(SIZE, false, elements); |
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shouldThrow(); |
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} catch (NullPointerException success) {} |
142 |
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} |
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* Initializing from Collection with some null elements throws NPE |
146 |
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*/ |
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public void testConstructor5() { |
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Integer[] ints = new Integer[SIZE]; |
149 |
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for (int i = 0; i < SIZE - 1; ++i) |
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ints[i] = i; |
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Collection<Integer> elements = Arrays.asList(ints); |
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try { |
153 |
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Integer[] ints = new Integer[SIZE]; |
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for (int i = 0; i < SIZE-1; ++i) |
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ints[i] = new Integer(i); |
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ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE, false, Arrays.asList(ints)); |
153 |
> |
new ArrayBlockingQueue(SIZE, false, elements); |
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shouldThrow(); |
155 |
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} catch (NullPointerException success) {} |
156 |
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} |
158 |
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/** |
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* Initializing from too large collection throws IAE |
160 |
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*/ |
161 |
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public void testConstructor6() { |
161 |
> |
public void testConstructor_collectionTooLarge() { |
162 |
> |
// just barely fits - succeeds |
163 |
> |
new ArrayBlockingQueue(SIZE, false, |
164 |
> |
Collections.nCopies(SIZE, "")); |
165 |
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try { |
166 |
< |
Integer[] ints = new Integer[SIZE]; |
167 |
< |
for (int i = 0; i < SIZE; ++i) |
97 |
< |
ints[i] = new Integer(i); |
98 |
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ArrayBlockingQueue q = new ArrayBlockingQueue(1, false, Arrays.asList(ints)); |
166 |
> |
new ArrayBlockingQueue(SIZE - 1, false, |
167 |
> |
Collections.nCopies(SIZE, "")); |
168 |
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shouldThrow(); |
169 |
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} catch (IllegalArgumentException success) {} |
170 |
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} |
175 |
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public void testConstructor7() { |
176 |
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Integer[] ints = new Integer[SIZE]; |
177 |
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for (int i = 0; i < SIZE; ++i) |
178 |
< |
ints[i] = new Integer(i); |
179 |
< |
ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE, true, Arrays.asList(ints)); |
178 |
> |
ints[i] = i; |
179 |
> |
Collection<Integer> elements = Arrays.asList(ints); |
180 |
> |
ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE, true, elements); |
181 |
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for (int i = 0; i < SIZE; ++i) |
182 |
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assertEquals(ints[i], q.poll()); |
183 |
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} |
186 |
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* Queue transitions from empty to full when elements added |
187 |
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*/ |
188 |
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public void testEmptyFull() { |
189 |
< |
ArrayBlockingQueue q = new ArrayBlockingQueue(2); |
189 |
> |
BlockingQueue q = populatedQueue(0, 2, 2, false); |
190 |
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assertTrue(q.isEmpty()); |
191 |
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assertEquals(2, q.remainingCapacity()); |
192 |
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q.add(one); |
193 |
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assertFalse(q.isEmpty()); |
194 |
< |
q.add(two); |
194 |
> |
assertTrue(q.offer(two)); |
195 |
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assertFalse(q.isEmpty()); |
196 |
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assertEquals(0, q.remainingCapacity()); |
197 |
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assertFalse(q.offer(three)); |
201 |
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* remainingCapacity decreases on add, increases on remove |
202 |
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*/ |
203 |
|
public void testRemainingCapacity() { |
204 |
< |
ArrayBlockingQueue q = populatedQueue(SIZE); |
205 |
< |
for (int i = 0; i < SIZE; ++i) { |
206 |
< |
assertEquals(i, q.remainingCapacity()); |
207 |
< |
assertEquals(SIZE-i, q.size()); |
208 |
< |
q.remove(); |
204 |
> |
int size = ThreadLocalRandom.current().nextInt(1, SIZE); |
205 |
> |
BlockingQueue q = populatedQueue(size, size, 2 * size, false); |
206 |
> |
int spare = q.remainingCapacity(); |
207 |
> |
int capacity = spare + size; |
208 |
> |
for (int i = 0; i < size; i++) { |
209 |
> |
assertEquals(spare + i, q.remainingCapacity()); |
210 |
> |
assertEquals(capacity, q.size() + q.remainingCapacity()); |
211 |
> |
assertEquals(i, q.remove()); |
212 |
|
} |
213 |
< |
for (int i = 0; i < SIZE; ++i) { |
214 |
< |
assertEquals(SIZE-i, q.remainingCapacity()); |
215 |
< |
assertEquals(i, q.size()); |
216 |
< |
q.add(new Integer(i)); |
213 |
> |
for (int i = 0; i < size; i++) { |
214 |
> |
assertEquals(capacity - i, q.remainingCapacity()); |
215 |
> |
assertEquals(capacity, q.size() + q.remainingCapacity()); |
216 |
> |
assertTrue(q.add(i)); |
217 |
|
} |
218 |
|
} |
219 |
|
|
220 |
|
/** |
148 |
– |
* offer(null) throws NPE |
149 |
– |
*/ |
150 |
– |
public void testOfferNull() { |
151 |
– |
try { |
152 |
– |
ArrayBlockingQueue q = new ArrayBlockingQueue(1); |
153 |
– |
q.offer(null); |
154 |
– |
shouldThrow(); |
155 |
– |
} catch (NullPointerException success) {} |
156 |
– |
} |
157 |
– |
|
158 |
– |
/** |
159 |
– |
* add(null) throws NPE |
160 |
– |
*/ |
161 |
– |
public void testAddNull() { |
162 |
– |
try { |
163 |
– |
ArrayBlockingQueue q = new ArrayBlockingQueue(1); |
164 |
– |
q.add(null); |
165 |
– |
shouldThrow(); |
166 |
– |
} catch (NullPointerException success) {} |
167 |
– |
} |
168 |
– |
|
169 |
– |
/** |
221 |
|
* Offer succeeds if not full; fails if full |
222 |
|
*/ |
223 |
|
public void testOffer() { |
230 |
|
* add succeeds if not full; throws ISE if full |
231 |
|
*/ |
232 |
|
public void testAdd() { |
233 |
+ |
ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE); |
234 |
+ |
for (int i = 0; i < SIZE; i++) assertTrue(q.add((Integer) i)); |
235 |
+ |
assertEquals(0, q.remainingCapacity()); |
236 |
|
try { |
237 |
< |
ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE); |
184 |
< |
for (int i = 0; i < SIZE; ++i) { |
185 |
< |
assertTrue(q.add(new Integer(i))); |
186 |
< |
} |
187 |
< |
assertEquals(0, q.remainingCapacity()); |
188 |
< |
q.add(new Integer(SIZE)); |
237 |
> |
q.add((Integer) SIZE); |
238 |
|
shouldThrow(); |
239 |
|
} catch (IllegalStateException success) {} |
240 |
|
} |
241 |
|
|
242 |
|
/** |
194 |
– |
* addAll(null) throws NPE |
195 |
– |
*/ |
196 |
– |
public void testAddAll1() { |
197 |
– |
try { |
198 |
– |
ArrayBlockingQueue q = new ArrayBlockingQueue(1); |
199 |
– |
q.addAll(null); |
200 |
– |
shouldThrow(); |
201 |
– |
} catch (NullPointerException success) {} |
202 |
– |
} |
203 |
– |
|
204 |
– |
/** |
243 |
|
* addAll(this) throws IAE |
244 |
|
*/ |
245 |
|
public void testAddAllSelf() { |
246 |
+ |
ArrayBlockingQueue q = populatedQueue(SIZE); |
247 |
|
try { |
209 |
– |
ArrayBlockingQueue q = populatedQueue(SIZE); |
248 |
|
q.addAll(q); |
249 |
|
shouldThrow(); |
250 |
|
} catch (IllegalArgumentException success) {} |
251 |
|
} |
252 |
|
|
215 |
– |
|
216 |
– |
/** |
217 |
– |
* addAll of a collection with null elements throws NPE |
218 |
– |
*/ |
219 |
– |
public void testAddAll2() { |
220 |
– |
try { |
221 |
– |
ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE); |
222 |
– |
Integer[] ints = new Integer[SIZE]; |
223 |
– |
q.addAll(Arrays.asList(ints)); |
224 |
– |
shouldThrow(); |
225 |
– |
} catch (NullPointerException success) {} |
226 |
– |
} |
253 |
|
/** |
254 |
|
* addAll of a collection with any null elements throws NPE after |
255 |
|
* possibly adding some elements |
256 |
|
*/ |
257 |
|
public void testAddAll3() { |
258 |
+ |
ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE); |
259 |
+ |
Integer[] ints = new Integer[SIZE]; |
260 |
+ |
for (int i = 0; i < SIZE - 1; ++i) |
261 |
+ |
ints[i] = new Integer(i); |
262 |
|
try { |
233 |
– |
ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE); |
234 |
– |
Integer[] ints = new Integer[SIZE]; |
235 |
– |
for (int i = 0; i < SIZE-1; ++i) |
236 |
– |
ints[i] = new Integer(i); |
263 |
|
q.addAll(Arrays.asList(ints)); |
264 |
|
shouldThrow(); |
265 |
|
} catch (NullPointerException success) {} |
266 |
|
} |
267 |
+ |
|
268 |
|
/** |
269 |
|
* addAll throws ISE if not enough room |
270 |
|
*/ |
271 |
< |
public void testAddAll4() { |
271 |
> |
public void testAddAll_insufficientSpace() { |
272 |
> |
int size = ThreadLocalRandom.current().nextInt(SIZE); |
273 |
> |
ArrayBlockingQueue q = populatedQueue(0, size, size, false); |
274 |
> |
// Just fits: |
275 |
> |
q.addAll(populatedQueue(size, size, 2 * size, false)); |
276 |
> |
assertEquals(0, q.remainingCapacity()); |
277 |
> |
assertEquals(size, q.size()); |
278 |
> |
assertEquals(0, q.peek()); |
279 |
|
try { |
280 |
< |
ArrayBlockingQueue q = new ArrayBlockingQueue(1); |
281 |
< |
Integer[] ints = new Integer[SIZE]; |
248 |
< |
for (int i = 0; i < SIZE; ++i) |
249 |
< |
ints[i] = new Integer(i); |
250 |
< |
q.addAll(Arrays.asList(ints)); |
280 |
> |
q = populatedQueue(0, size, size, false); |
281 |
> |
q.addAll(Collections.nCopies(size + 1, 42)); |
282 |
|
shouldThrow(); |
283 |
|
} catch (IllegalStateException success) {} |
284 |
|
} |
285 |
+ |
|
286 |
|
/** |
287 |
|
* Queue contains all elements, in traversal order, of successful addAll |
288 |
|
*/ |
299 |
|
} |
300 |
|
|
301 |
|
/** |
270 |
– |
* put(null) throws NPE |
271 |
– |
*/ |
272 |
– |
public void testPutNull() throws InterruptedException { |
273 |
– |
try { |
274 |
– |
ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE); |
275 |
– |
q.put(null); |
276 |
– |
shouldThrow(); |
277 |
– |
} catch (NullPointerException success) {} |
278 |
– |
} |
279 |
– |
|
280 |
– |
/** |
302 |
|
* all elements successfully put are contained |
303 |
|
*/ |
304 |
|
public void testPut() throws InterruptedException { |
305 |
|
ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE); |
306 |
|
for (int i = 0; i < SIZE; ++i) { |
307 |
< |
Integer I = new Integer(i); |
308 |
< |
q.put(I); |
309 |
< |
assertTrue(q.contains(I)); |
307 |
> |
Integer x = new Integer(i); |
308 |
> |
q.put(x); |
309 |
> |
assertTrue(q.contains(x)); |
310 |
|
} |
311 |
|
assertEquals(0, q.remainingCapacity()); |
312 |
|
} |
316 |
|
*/ |
317 |
|
public void testBlockingPut() throws InterruptedException { |
318 |
|
final ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE); |
319 |
< |
Thread t = new Thread(new CheckedRunnable() { |
319 |
> |
final CountDownLatch pleaseInterrupt = new CountDownLatch(1); |
320 |
> |
Thread t = newStartedThread(new CheckedRunnable() { |
321 |
|
public void realRun() throws InterruptedException { |
322 |
|
for (int i = 0; i < SIZE; ++i) |
323 |
|
q.put(i); |
324 |
|
assertEquals(SIZE, q.size()); |
325 |
|
assertEquals(0, q.remainingCapacity()); |
326 |
+ |
|
327 |
+ |
Thread.currentThread().interrupt(); |
328 |
|
try { |
329 |
|
q.put(99); |
330 |
|
shouldThrow(); |
331 |
|
} catch (InterruptedException success) {} |
332 |
+ |
assertFalse(Thread.interrupted()); |
333 |
+ |
|
334 |
+ |
pleaseInterrupt.countDown(); |
335 |
+ |
try { |
336 |
+ |
q.put(99); |
337 |
+ |
shouldThrow(); |
338 |
+ |
} catch (InterruptedException success) {} |
339 |
+ |
assertFalse(Thread.interrupted()); |
340 |
|
}}); |
341 |
|
|
342 |
< |
t.start(); |
343 |
< |
Thread.sleep(SHORT_DELAY_MS); |
342 |
> |
await(pleaseInterrupt); |
343 |
> |
assertThreadStaysAlive(t); |
344 |
|
t.interrupt(); |
345 |
< |
t.join(); |
345 |
> |
awaitTermination(t); |
346 |
|
assertEquals(SIZE, q.size()); |
347 |
|
assertEquals(0, q.remainingCapacity()); |
348 |
|
} |
349 |
|
|
350 |
|
/** |
351 |
< |
* put blocks waiting for take when full |
351 |
> |
* put blocks interruptibly waiting for take when full |
352 |
|
*/ |
353 |
|
public void testPutWithTake() throws InterruptedException { |
354 |
|
final int capacity = 2; |
355 |
|
final ArrayBlockingQueue q = new ArrayBlockingQueue(capacity); |
356 |
< |
Thread t = new Thread(new CheckedRunnable() { |
356 |
> |
final CountDownLatch pleaseTake = new CountDownLatch(1); |
357 |
> |
final CountDownLatch pleaseInterrupt = new CountDownLatch(1); |
358 |
> |
Thread t = newStartedThread(new CheckedRunnable() { |
359 |
|
public void realRun() throws InterruptedException { |
360 |
< |
for (int i = 0; i < capacity + 1; i++) |
360 |
> |
for (int i = 0; i < capacity; i++) |
361 |
|
q.put(i); |
362 |
+ |
pleaseTake.countDown(); |
363 |
+ |
q.put(86); |
364 |
+ |
|
365 |
+ |
pleaseInterrupt.countDown(); |
366 |
|
try { |
367 |
|
q.put(99); |
368 |
|
shouldThrow(); |
369 |
|
} catch (InterruptedException success) {} |
370 |
+ |
assertFalse(Thread.interrupted()); |
371 |
|
}}); |
372 |
|
|
373 |
< |
t.start(); |
374 |
< |
Thread.sleep(SHORT_DELAY_MS); |
336 |
< |
assertEquals(q.remainingCapacity(), 0); |
373 |
> |
await(pleaseTake); |
374 |
> |
assertEquals(0, q.remainingCapacity()); |
375 |
|
assertEquals(0, q.take()); |
376 |
< |
Thread.sleep(SHORT_DELAY_MS); |
376 |
> |
|
377 |
> |
await(pleaseInterrupt); |
378 |
> |
assertThreadStaysAlive(t); |
379 |
|
t.interrupt(); |
380 |
< |
t.join(); |
381 |
< |
assertEquals(q.remainingCapacity(), 0); |
380 |
> |
awaitTermination(t); |
381 |
> |
assertEquals(0, q.remainingCapacity()); |
382 |
|
} |
383 |
|
|
384 |
|
/** |
386 |
|
*/ |
387 |
|
public void testTimedOffer() throws InterruptedException { |
388 |
|
final ArrayBlockingQueue q = new ArrayBlockingQueue(2); |
389 |
< |
Thread t = new Thread(new CheckedRunnable() { |
389 |
> |
final CountDownLatch pleaseInterrupt = new CountDownLatch(1); |
390 |
> |
Thread t = newStartedThread(new CheckedRunnable() { |
391 |
|
public void realRun() throws InterruptedException { |
392 |
|
q.put(new Object()); |
393 |
|
q.put(new Object()); |
394 |
< |
assertFalse(q.offer(new Object(), SHORT_DELAY_MS/2, MILLISECONDS)); |
394 |
> |
long startTime = System.nanoTime(); |
395 |
> |
assertFalse(q.offer(new Object(), timeoutMillis(), MILLISECONDS)); |
396 |
> |
assertTrue(millisElapsedSince(startTime) >= timeoutMillis()); |
397 |
> |
pleaseInterrupt.countDown(); |
398 |
|
try { |
399 |
< |
q.offer(new Object(), LONG_DELAY_MS, MILLISECONDS); |
399 |
> |
q.offer(new Object(), 2 * LONG_DELAY_MS, MILLISECONDS); |
400 |
|
shouldThrow(); |
401 |
|
} catch (InterruptedException success) {} |
402 |
|
}}); |
403 |
|
|
404 |
< |
t.start(); |
405 |
< |
Thread.sleep(SHORT_DELAY_MS); |
404 |
> |
await(pleaseInterrupt); |
405 |
> |
assertThreadStaysAlive(t); |
406 |
|
t.interrupt(); |
407 |
< |
t.join(); |
407 |
> |
awaitTermination(t); |
408 |
|
} |
409 |
|
|
410 |
|
/** |
418 |
|
} |
419 |
|
|
420 |
|
/** |
377 |
– |
* take blocks interruptibly when empty |
378 |
– |
*/ |
379 |
– |
public void testTakeFromEmpty() throws InterruptedException { |
380 |
– |
final ArrayBlockingQueue q = new ArrayBlockingQueue(2); |
381 |
– |
Thread t = new ThreadShouldThrow(InterruptedException.class) { |
382 |
– |
public void realRun() throws InterruptedException { |
383 |
– |
q.take(); |
384 |
– |
}}; |
385 |
– |
|
386 |
– |
t.start(); |
387 |
– |
Thread.sleep(SHORT_DELAY_MS); |
388 |
– |
t.interrupt(); |
389 |
– |
t.join(); |
390 |
– |
} |
391 |
– |
|
392 |
– |
/** |
421 |
|
* Take removes existing elements until empty, then blocks interruptibly |
422 |
|
*/ |
423 |
|
public void testBlockingTake() throws InterruptedException { |
424 |
|
final ArrayBlockingQueue q = populatedQueue(SIZE); |
425 |
< |
Thread t = new Thread(new CheckedRunnable() { |
425 |
> |
final CountDownLatch pleaseInterrupt = new CountDownLatch(1); |
426 |
> |
Thread t = newStartedThread(new CheckedRunnable() { |
427 |
|
public void realRun() throws InterruptedException { |
428 |
|
for (int i = 0; i < SIZE; ++i) { |
429 |
|
assertEquals(i, q.take()); |
430 |
|
} |
431 |
+ |
|
432 |
+ |
Thread.currentThread().interrupt(); |
433 |
|
try { |
434 |
|
q.take(); |
435 |
|
shouldThrow(); |
436 |
|
} catch (InterruptedException success) {} |
437 |
+ |
assertFalse(Thread.interrupted()); |
438 |
+ |
|
439 |
+ |
pleaseInterrupt.countDown(); |
440 |
+ |
try { |
441 |
+ |
q.take(); |
442 |
+ |
shouldThrow(); |
443 |
+ |
} catch (InterruptedException success) {} |
444 |
+ |
assertFalse(Thread.interrupted()); |
445 |
|
}}); |
446 |
|
|
447 |
< |
t.start(); |
448 |
< |
Thread.sleep(SHORT_DELAY_MS); |
447 |
> |
await(pleaseInterrupt); |
448 |
> |
assertThreadStaysAlive(t); |
449 |
|
t.interrupt(); |
450 |
< |
t.join(); |
450 |
> |
awaitTermination(t); |
451 |
|
} |
452 |
|
|
414 |
– |
|
453 |
|
/** |
454 |
|
* poll succeeds unless empty |
455 |
|
*/ |
462 |
|
} |
463 |
|
|
464 |
|
/** |
465 |
< |
* timed pool with zero timeout succeeds when non-empty, else times out |
465 |
> |
* timed poll with zero timeout succeeds when non-empty, else times out |
466 |
|
*/ |
467 |
|
public void testTimedPoll0() throws InterruptedException { |
468 |
|
ArrayBlockingQueue q = populatedQueue(SIZE); |
470 |
|
assertEquals(i, q.poll(0, MILLISECONDS)); |
471 |
|
} |
472 |
|
assertNull(q.poll(0, MILLISECONDS)); |
473 |
+ |
checkEmpty(q); |
474 |
|
} |
475 |
|
|
476 |
|
/** |
477 |
< |
* timed pool with nonzero timeout succeeds when non-empty, else times out |
477 |
> |
* timed poll with nonzero timeout succeeds when non-empty, else times out |
478 |
|
*/ |
479 |
|
public void testTimedPoll() throws InterruptedException { |
480 |
|
ArrayBlockingQueue q = populatedQueue(SIZE); |
481 |
|
for (int i = 0; i < SIZE; ++i) { |
482 |
< |
assertEquals(i, q.poll(SHORT_DELAY_MS, MILLISECONDS)); |
483 |
< |
} |
484 |
< |
assertNull(q.poll(SHORT_DELAY_MS, MILLISECONDS)); |
482 |
> |
long startTime = System.nanoTime(); |
483 |
> |
assertEquals(i, q.poll(LONG_DELAY_MS, MILLISECONDS)); |
484 |
> |
assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS); |
485 |
> |
} |
486 |
> |
long startTime = System.nanoTime(); |
487 |
> |
assertNull(q.poll(timeoutMillis(), MILLISECONDS)); |
488 |
> |
assertTrue(millisElapsedSince(startTime) >= timeoutMillis()); |
489 |
> |
checkEmpty(q); |
490 |
|
} |
491 |
|
|
492 |
|
/** |
494 |
|
* returning timeout status |
495 |
|
*/ |
496 |
|
public void testInterruptedTimedPoll() throws InterruptedException { |
497 |
< |
Thread t = new Thread(new CheckedRunnable() { |
497 |
> |
final BlockingQueue<Integer> q = populatedQueue(SIZE); |
498 |
> |
final CountDownLatch aboutToWait = new CountDownLatch(1); |
499 |
> |
Thread t = newStartedThread(new CheckedRunnable() { |
500 |
|
public void realRun() throws InterruptedException { |
501 |
< |
ArrayBlockingQueue q = populatedQueue(SIZE); |
501 |
> |
long startTime = System.nanoTime(); |
502 |
|
for (int i = 0; i < SIZE; ++i) { |
503 |
< |
assertEquals(i, q.poll(SHORT_DELAY_MS, MILLISECONDS));; |
503 |
> |
assertEquals(i, (int) q.poll(LONG_DELAY_MS, MILLISECONDS)); |
504 |
|
} |
505 |
< |
try { |
460 |
< |
q.poll(SMALL_DELAY_MS, MILLISECONDS); |
461 |
< |
shouldThrow(); |
462 |
< |
} catch (InterruptedException success) {} |
463 |
< |
}}); |
464 |
< |
|
465 |
< |
t.start(); |
466 |
< |
Thread.sleep(SHORT_DELAY_MS); |
467 |
< |
t.interrupt(); |
468 |
< |
t.join(); |
469 |
< |
} |
470 |
< |
|
471 |
< |
/** |
472 |
< |
* timed poll before a delayed offer fails; after offer succeeds; |
473 |
< |
* on interruption throws |
474 |
< |
*/ |
475 |
< |
public void testTimedPollWithOffer() throws InterruptedException { |
476 |
< |
final ArrayBlockingQueue q = new ArrayBlockingQueue(2); |
477 |
< |
Thread t = new Thread(new CheckedRunnable() { |
478 |
< |
public void realRun() throws InterruptedException { |
479 |
< |
assertNull(q.poll(SHORT_DELAY_MS, MILLISECONDS)); |
480 |
< |
assertSame(zero, q.poll(LONG_DELAY_MS, MILLISECONDS)); |
505 |
> |
aboutToWait.countDown(); |
506 |
|
try { |
507 |
|
q.poll(LONG_DELAY_MS, MILLISECONDS); |
508 |
|
shouldThrow(); |
509 |
< |
} catch (InterruptedException success) {} |
509 |
> |
} catch (InterruptedException success) { |
510 |
> |
assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS); |
511 |
> |
} |
512 |
|
}}); |
513 |
|
|
514 |
< |
t.start(); |
515 |
< |
Thread.sleep(SMALL_DELAY_MS); |
489 |
< |
assertTrue(q.offer(zero, SHORT_DELAY_MS, MILLISECONDS)); |
514 |
> |
await(aboutToWait); |
515 |
> |
waitForThreadToEnterWaitState(t); |
516 |
|
t.interrupt(); |
517 |
< |
t.join(); |
517 |
> |
awaitTermination(t); |
518 |
> |
checkEmpty(q); |
519 |
|
} |
520 |
|
|
494 |
– |
|
521 |
|
/** |
522 |
|
* peek returns next element, or null if empty |
523 |
|
*/ |
562 |
|
} |
563 |
|
|
564 |
|
/** |
539 |
– |
* remove(x) removes x and returns true if present |
540 |
– |
*/ |
541 |
– |
public void testRemoveElement() { |
542 |
– |
ArrayBlockingQueue q = populatedQueue(SIZE); |
543 |
– |
for (int i = 1; i < SIZE; i+=2) { |
544 |
– |
assertTrue(q.remove(new Integer(i))); |
545 |
– |
} |
546 |
– |
for (int i = 0; i < SIZE; i+=2) { |
547 |
– |
assertTrue(q.remove(new Integer(i))); |
548 |
– |
assertFalse(q.remove(new Integer(i+1))); |
549 |
– |
} |
550 |
– |
assertTrue(q.isEmpty()); |
551 |
– |
} |
552 |
– |
|
553 |
– |
/** |
565 |
|
* contains(x) reports true when elements added but not yet removed |
566 |
|
*/ |
567 |
|
public void testContains() { |
617 |
|
assertTrue(changed); |
618 |
|
|
619 |
|
assertTrue(q.containsAll(p)); |
620 |
< |
assertEquals(SIZE-i, q.size()); |
620 |
> |
assertEquals(SIZE - i, q.size()); |
621 |
|
p.remove(); |
622 |
|
} |
623 |
|
} |
630 |
|
ArrayBlockingQueue q = populatedQueue(SIZE); |
631 |
|
ArrayBlockingQueue p = populatedQueue(i); |
632 |
|
assertTrue(q.removeAll(p)); |
633 |
< |
assertEquals(SIZE-i, q.size()); |
633 |
> |
assertEquals(SIZE - i, q.size()); |
634 |
|
for (int j = 0; j < i; ++j) { |
635 |
< |
Integer I = (Integer)(p.remove()); |
636 |
< |
assertFalse(q.contains(I)); |
635 |
> |
Integer x = (Integer)(p.remove()); |
636 |
> |
assertFalse(q.contains(x)); |
637 |
|
} |
638 |
|
} |
639 |
|
} |
640 |
|
|
641 |
< |
/** |
642 |
< |
* toArray contains all elements |
643 |
< |
*/ |
644 |
< |
public void testToArray() throws InterruptedException { |
645 |
< |
ArrayBlockingQueue q = populatedQueue(SIZE); |
646 |
< |
Object[] o = q.toArray(); |
647 |
< |
for (int i = 0; i < o.length; i++) |
648 |
< |
assertEquals(o[i], q.take()); |
641 |
> |
void checkToArray(ArrayBlockingQueue<Integer> q) { |
642 |
> |
int size = q.size(); |
643 |
> |
Object[] a1 = q.toArray(); |
644 |
> |
assertEquals(size, a1.length); |
645 |
> |
Integer[] a2 = q.toArray(new Integer[0]); |
646 |
> |
assertEquals(size, a2.length); |
647 |
> |
Integer[] a3 = q.toArray(new Integer[Math.max(0, size - 1)]); |
648 |
> |
assertEquals(size, a3.length); |
649 |
> |
Integer[] a4 = new Integer[size]; |
650 |
> |
assertSame(a4, q.toArray(a4)); |
651 |
> |
Integer[] a5 = new Integer[size + 1]; |
652 |
> |
Arrays.fill(a5, 42); |
653 |
> |
assertSame(a5, q.toArray(a5)); |
654 |
> |
Integer[] a6 = new Integer[size + 2]; |
655 |
> |
Arrays.fill(a6, 42); |
656 |
> |
assertSame(a6, q.toArray(a6)); |
657 |
> |
Object[][] as = { a1, a2, a3, a4, a5, a6 }; |
658 |
> |
for (Object[] a : as) { |
659 |
> |
if (a.length > size) assertNull(a[size]); |
660 |
> |
if (a.length > size + 1) assertEquals(42, a[size + 1]); |
661 |
> |
} |
662 |
> |
Iterator it = q.iterator(); |
663 |
> |
Integer s = q.peek(); |
664 |
> |
for (int i = 0; i < size; i++) { |
665 |
> |
Integer x = (Integer) it.next(); |
666 |
> |
assertEquals(s + i, (int) x); |
667 |
> |
for (Object[] a : as) |
668 |
> |
assertSame(a1[i], x); |
669 |
> |
} |
670 |
|
} |
671 |
|
|
672 |
|
/** |
673 |
< |
* toArray(a) contains all elements |
673 |
> |
* toArray() and toArray(a) contain all elements in FIFO order |
674 |
|
*/ |
675 |
< |
public void testToArray2() throws InterruptedException { |
676 |
< |
ArrayBlockingQueue q = populatedQueue(SIZE); |
677 |
< |
Integer[] ints = new Integer[SIZE]; |
678 |
< |
ints = (Integer[])q.toArray(ints); |
679 |
< |
for (int i = 0; i < ints.length; i++) |
680 |
< |
assertEquals(ints[i], q.take()); |
675 |
> |
public void testToArray() { |
676 |
> |
final ThreadLocalRandom rnd = ThreadLocalRandom.current(); |
677 |
> |
final int size = rnd.nextInt(6); |
678 |
> |
final int capacity = Math.max(1, size + rnd.nextInt(size + 1)); |
679 |
> |
ArrayBlockingQueue<Integer> q = new ArrayBlockingQueue<>(capacity); |
680 |
> |
for (int i = 0; i < size; i++) { |
681 |
> |
checkToArray(q); |
682 |
> |
q.add(i); |
683 |
> |
} |
684 |
> |
// Provoke wraparound |
685 |
> |
int added = size * 2; |
686 |
> |
for (int i = 0; i < added; i++) { |
687 |
> |
checkToArray(q); |
688 |
> |
assertEquals((Integer) i, q.poll()); |
689 |
> |
q.add(size + i); |
690 |
> |
} |
691 |
> |
for (int i = 0; i < size; i++) { |
692 |
> |
checkToArray(q); |
693 |
> |
assertEquals((Integer) (added + i), q.poll()); |
694 |
> |
} |
695 |
|
} |
696 |
|
|
697 |
|
/** |
698 |
< |
* toArray(null) throws NPE |
698 |
> |
* toArray(incompatible array type) throws ArrayStoreException |
699 |
|
*/ |
700 |
< |
public void testToArray_BadArg() { |
700 |
> |
public void testToArray_incompatibleArrayType() { |
701 |
|
ArrayBlockingQueue q = populatedQueue(SIZE); |
702 |
|
try { |
703 |
< |
Object o[] = q.toArray(null); |
703 |
> |
q.toArray(new String[10]); |
704 |
|
shouldThrow(); |
705 |
< |
} catch (NullPointerException success) {} |
660 |
< |
} |
661 |
< |
|
662 |
< |
/** |
663 |
< |
* toArray with incompatible array type throws CCE |
664 |
< |
*/ |
665 |
< |
public void testToArray1_BadArg() { |
666 |
< |
ArrayBlockingQueue q = populatedQueue(SIZE); |
705 |
> |
} catch (ArrayStoreException success) {} |
706 |
|
try { |
707 |
< |
Object o[] = q.toArray(new String[10]); |
707 |
> |
q.toArray(new String[0]); |
708 |
|
shouldThrow(); |
709 |
|
} catch (ArrayStoreException success) {} |
710 |
|
} |
711 |
|
|
673 |
– |
|
712 |
|
/** |
713 |
|
* iterator iterates through all elements |
714 |
|
*/ |
715 |
|
public void testIterator() throws InterruptedException { |
716 |
|
ArrayBlockingQueue q = populatedQueue(SIZE); |
717 |
|
Iterator it = q.iterator(); |
718 |
< |
while (it.hasNext()) { |
718 |
> |
int i; |
719 |
> |
for (i = 0; it.hasNext(); i++) |
720 |
> |
assertTrue(q.contains(it.next())); |
721 |
> |
assertEquals(i, SIZE); |
722 |
> |
assertIteratorExhausted(it); |
723 |
> |
|
724 |
> |
it = q.iterator(); |
725 |
> |
for (i = 0; it.hasNext(); i++) |
726 |
|
assertEquals(it.next(), q.take()); |
727 |
< |
} |
727 |
> |
assertEquals(i, SIZE); |
728 |
> |
assertIteratorExhausted(it); |
729 |
> |
} |
730 |
> |
|
731 |
> |
/** |
732 |
> |
* iterator of empty collection has no elements |
733 |
> |
*/ |
734 |
> |
public void testEmptyIterator() { |
735 |
> |
assertIteratorExhausted(new ArrayBlockingQueue(SIZE).iterator()); |
736 |
|
} |
737 |
|
|
738 |
|
/** |
739 |
|
* iterator.remove removes current element |
740 |
|
*/ |
741 |
< |
public void testIteratorRemove () { |
741 |
> |
public void testIteratorRemove() { |
742 |
|
final ArrayBlockingQueue q = new ArrayBlockingQueue(3); |
743 |
|
q.add(two); |
744 |
|
q.add(one); |
749 |
|
it.remove(); |
750 |
|
|
751 |
|
it = q.iterator(); |
752 |
< |
assertEquals(it.next(), one); |
753 |
< |
assertEquals(it.next(), three); |
752 |
> |
assertSame(it.next(), one); |
753 |
> |
assertSame(it.next(), three); |
754 |
|
assertFalse(it.hasNext()); |
755 |
|
} |
756 |
|
|
775 |
|
/** |
776 |
|
* Modifications do not cause iterators to fail |
777 |
|
*/ |
778 |
< |
public void testWeaklyConsistentIteration () { |
778 |
> |
public void testWeaklyConsistentIteration() { |
779 |
|
final ArrayBlockingQueue q = new ArrayBlockingQueue(3); |
780 |
|
q.add(one); |
781 |
|
q.add(two); |
787 |
|
assertEquals(0, q.size()); |
788 |
|
} |
789 |
|
|
737 |
– |
|
790 |
|
/** |
791 |
|
* toString contains toStrings of elements |
792 |
|
*/ |
794 |
|
ArrayBlockingQueue q = populatedQueue(SIZE); |
795 |
|
String s = q.toString(); |
796 |
|
for (int i = 0; i < SIZE; ++i) { |
797 |
< |
assertTrue(s.indexOf(String.valueOf(i)) >= 0); |
797 |
> |
assertTrue(s.contains(String.valueOf(i))); |
798 |
|
} |
799 |
|
} |
800 |
|
|
749 |
– |
|
801 |
|
/** |
802 |
|
* offer transfers elements across Executor tasks |
803 |
|
*/ |
805 |
|
final ArrayBlockingQueue q = new ArrayBlockingQueue(2); |
806 |
|
q.add(one); |
807 |
|
q.add(two); |
808 |
< |
ExecutorService executor = Executors.newFixedThreadPool(2); |
809 |
< |
executor.execute(new CheckedRunnable() { |
810 |
< |
public void realRun() throws InterruptedException { |
811 |
< |
assertFalse(q.offer(three)); |
812 |
< |
assertTrue(q.offer(three, MEDIUM_DELAY_MS, MILLISECONDS)); |
813 |
< |
assertEquals(0, q.remainingCapacity()); |
814 |
< |
}}); |
815 |
< |
|
816 |
< |
executor.execute(new CheckedRunnable() { |
817 |
< |
public void realRun() throws InterruptedException { |
818 |
< |
Thread.sleep(SMALL_DELAY_MS); |
819 |
< |
assertSame(one, q.take()); |
820 |
< |
}}); |
821 |
< |
|
822 |
< |
joinPool(executor); |
823 |
< |
|
808 |
> |
final CheckedBarrier threadsStarted = new CheckedBarrier(2); |
809 |
> |
final ExecutorService executor = Executors.newFixedThreadPool(2); |
810 |
> |
try (PoolCleaner cleaner = cleaner(executor)) { |
811 |
> |
executor.execute(new CheckedRunnable() { |
812 |
> |
public void realRun() throws InterruptedException { |
813 |
> |
assertFalse(q.offer(three)); |
814 |
> |
threadsStarted.await(); |
815 |
> |
assertTrue(q.offer(three, LONG_DELAY_MS, MILLISECONDS)); |
816 |
> |
assertEquals(0, q.remainingCapacity()); |
817 |
> |
}}); |
818 |
> |
|
819 |
> |
executor.execute(new CheckedRunnable() { |
820 |
> |
public void realRun() throws InterruptedException { |
821 |
> |
threadsStarted.await(); |
822 |
> |
assertEquals(0, q.remainingCapacity()); |
823 |
> |
assertSame(one, q.take()); |
824 |
> |
}}); |
825 |
> |
} |
826 |
|
} |
827 |
|
|
828 |
|
/** |
829 |
< |
* poll retrieves elements across Executor threads |
829 |
> |
* timed poll retrieves elements across Executor threads |
830 |
|
*/ |
831 |
|
public void testPollInExecutor() { |
832 |
|
final ArrayBlockingQueue q = new ArrayBlockingQueue(2); |
833 |
< |
ExecutorService executor = Executors.newFixedThreadPool(2); |
834 |
< |
executor.execute(new CheckedRunnable() { |
835 |
< |
public void realRun() throws InterruptedException { |
836 |
< |
assertNull(q.poll()); |
837 |
< |
assertSame(one, q.poll(MEDIUM_DELAY_MS, MILLISECONDS)); |
838 |
< |
assertTrue(q.isEmpty()); |
839 |
< |
}}); |
840 |
< |
|
841 |
< |
executor.execute(new CheckedRunnable() { |
842 |
< |
public void realRun() throws InterruptedException { |
843 |
< |
Thread.sleep(SMALL_DELAY_MS); |
844 |
< |
q.put(one); |
845 |
< |
}}); |
846 |
< |
|
847 |
< |
joinPool(executor); |
833 |
> |
final CheckedBarrier threadsStarted = new CheckedBarrier(2); |
834 |
> |
final ExecutorService executor = Executors.newFixedThreadPool(2); |
835 |
> |
try (PoolCleaner cleaner = cleaner(executor)) { |
836 |
> |
executor.execute(new CheckedRunnable() { |
837 |
> |
public void realRun() throws InterruptedException { |
838 |
> |
assertNull(q.poll()); |
839 |
> |
threadsStarted.await(); |
840 |
> |
assertSame(one, q.poll(LONG_DELAY_MS, MILLISECONDS)); |
841 |
> |
checkEmpty(q); |
842 |
> |
}}); |
843 |
> |
|
844 |
> |
executor.execute(new CheckedRunnable() { |
845 |
> |
public void realRun() throws InterruptedException { |
846 |
> |
threadsStarted.await(); |
847 |
> |
q.put(one); |
848 |
> |
}}); |
849 |
> |
} |
850 |
|
} |
851 |
|
|
852 |
|
/** |
853 |
|
* A deserialized serialized queue has same elements in same order |
854 |
|
*/ |
855 |
|
public void testSerialization() throws Exception { |
856 |
< |
ArrayBlockingQueue q = populatedQueue(SIZE); |
857 |
< |
|
803 |
< |
ByteArrayOutputStream bout = new ByteArrayOutputStream(10000); |
804 |
< |
ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout)); |
805 |
< |
out.writeObject(q); |
806 |
< |
out.close(); |
856 |
> |
Queue x = populatedQueue(SIZE); |
857 |
> |
Queue y = serialClone(x); |
858 |
|
|
859 |
< |
ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray()); |
860 |
< |
ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin)); |
861 |
< |
ArrayBlockingQueue r = (ArrayBlockingQueue)in.readObject(); |
862 |
< |
assertEquals(q.size(), r.size()); |
863 |
< |
while (!q.isEmpty()) |
864 |
< |
assertEquals(q.remove(), r.remove()); |
865 |
< |
} |
866 |
< |
|
867 |
< |
/** |
817 |
< |
* drainTo(null) throws NPE |
818 |
< |
*/ |
819 |
< |
public void testDrainToNull() { |
820 |
< |
ArrayBlockingQueue q = populatedQueue(SIZE); |
821 |
< |
try { |
822 |
< |
q.drainTo(null); |
823 |
< |
shouldThrow(); |
824 |
< |
} catch (NullPointerException success) {} |
825 |
< |
} |
826 |
< |
|
827 |
< |
/** |
828 |
< |
* drainTo(this) throws IAE |
829 |
< |
*/ |
830 |
< |
public void testDrainToSelf() { |
831 |
< |
ArrayBlockingQueue q = populatedQueue(SIZE); |
832 |
< |
try { |
833 |
< |
q.drainTo(q); |
834 |
< |
shouldThrow(); |
835 |
< |
} catch (IllegalArgumentException success) {} |
859 |
> |
assertNotSame(x, y); |
860 |
> |
assertEquals(x.size(), y.size()); |
861 |
> |
assertEquals(x.toString(), y.toString()); |
862 |
> |
assertTrue(Arrays.equals(x.toArray(), y.toArray())); |
863 |
> |
while (!x.isEmpty()) { |
864 |
> |
assertFalse(y.isEmpty()); |
865 |
> |
assertEquals(x.remove(), y.remove()); |
866 |
> |
} |
867 |
> |
assertTrue(y.isEmpty()); |
868 |
|
} |
869 |
|
|
870 |
|
/** |
874 |
|
ArrayBlockingQueue q = populatedQueue(SIZE); |
875 |
|
ArrayList l = new ArrayList(); |
876 |
|
q.drainTo(l); |
877 |
< |
assertEquals(q.size(), 0); |
878 |
< |
assertEquals(l.size(), SIZE); |
877 |
> |
assertEquals(0, q.size()); |
878 |
> |
assertEquals(SIZE, l.size()); |
879 |
|
for (int i = 0; i < SIZE; ++i) |
880 |
|
assertEquals(l.get(i), new Integer(i)); |
881 |
|
q.add(zero); |
885 |
|
assertTrue(q.contains(one)); |
886 |
|
l.clear(); |
887 |
|
q.drainTo(l); |
888 |
< |
assertEquals(q.size(), 0); |
889 |
< |
assertEquals(l.size(), 2); |
888 |
> |
assertEquals(0, q.size()); |
889 |
> |
assertEquals(2, l.size()); |
890 |
|
for (int i = 0; i < 2; ++i) |
891 |
|
assertEquals(l.get(i), new Integer(i)); |
892 |
|
} |
898 |
|
final ArrayBlockingQueue q = populatedQueue(SIZE); |
899 |
|
Thread t = new Thread(new CheckedRunnable() { |
900 |
|
public void realRun() throws InterruptedException { |
901 |
< |
q.put(new Integer(SIZE+1)); |
901 |
> |
q.put(new Integer(SIZE + 1)); |
902 |
|
}}); |
903 |
|
|
904 |
|
t.start(); |
912 |
|
} |
913 |
|
|
914 |
|
/** |
915 |
< |
* drainTo(null, n) throws NPE |
884 |
< |
*/ |
885 |
< |
public void testDrainToNullN() { |
886 |
< |
ArrayBlockingQueue q = populatedQueue(SIZE); |
887 |
< |
try { |
888 |
< |
q.drainTo(null, 0); |
889 |
< |
shouldThrow(); |
890 |
< |
} catch (NullPointerException success) {} |
891 |
< |
} |
892 |
< |
|
893 |
< |
/** |
894 |
< |
* drainTo(this, n) throws IAE |
895 |
< |
*/ |
896 |
< |
public void testDrainToSelfN() { |
897 |
< |
ArrayBlockingQueue q = populatedQueue(SIZE); |
898 |
< |
try { |
899 |
< |
q.drainTo(q, 0); |
900 |
< |
shouldThrow(); |
901 |
< |
} catch (IllegalArgumentException success) {} |
902 |
< |
} |
903 |
< |
|
904 |
< |
/** |
905 |
< |
* drainTo(c, n) empties first max {n, size} elements of queue into c |
915 |
> |
* drainTo(c, n) empties first min(n, size) elements of queue into c |
916 |
|
*/ |
917 |
|
public void testDrainToN() { |
918 |
< |
ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE*2); |
918 |
> |
ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE * 2); |
919 |
|
for (int i = 0; i < SIZE + 2; ++i) { |
920 |
|
for (int j = 0; j < SIZE; j++) |
921 |
|
assertTrue(q.offer(new Integer(j))); |
922 |
|
ArrayList l = new ArrayList(); |
923 |
|
q.drainTo(l, i); |
924 |
< |
int k = (i < SIZE)? i : SIZE; |
925 |
< |
assertEquals(l.size(), k); |
926 |
< |
assertEquals(q.size(), SIZE-k); |
924 |
> |
int k = (i < SIZE) ? i : SIZE; |
925 |
> |
assertEquals(k, l.size()); |
926 |
> |
assertEquals(SIZE - k, q.size()); |
927 |
|
for (int j = 0; j < k; ++j) |
928 |
|
assertEquals(l.get(j), new Integer(j)); |
929 |
< |
while (q.poll() != null) ; |
929 |
> |
do {} while (q.poll() != null); |
930 |
|
} |
931 |
|
} |
932 |
|
|
933 |
+ |
/** |
934 |
+ |
* remove(null), contains(null) always return false |
935 |
+ |
*/ |
936 |
+ |
public void testNeverContainsNull() { |
937 |
+ |
Collection<?>[] qs = { |
938 |
+ |
new ArrayBlockingQueue<Object>(10), |
939 |
+ |
populatedQueue(2), |
940 |
+ |
}; |
941 |
+ |
|
942 |
+ |
for (Collection<?> q : qs) { |
943 |
+ |
assertFalse(q.contains(null)); |
944 |
+ |
assertFalse(q.remove(null)); |
945 |
+ |
} |
946 |
+ |
} |
947 |
|
} |