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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.*; |
10 |
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|
11 |
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import java.util.ArrayList; |
12 |
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import java.util.Arrays; |
13 |
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import java.util.Collection; |
14 |
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import java.util.Collections; |
15 |
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import java.util.Iterator; |
16 |
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import java.util.NoSuchElementException; |
17 |
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import java.util.Queue; |
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import java.util.concurrent.ArrayBlockingQueue; |
19 |
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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; |
23 |
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import java.util.concurrent.ThreadLocalRandom; |
24 |
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|
25 |
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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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main(suite(), args); |
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} |
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|
33 |
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public static Test suite() { |
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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 new ArrayBlockingQueue(20, true); |
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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 new ArrayBlockingQueue(20, false); |
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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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public static void main(String[] args) { |
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junit.textui.TestRunner.run(suite()); |
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} |
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|
68 |
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public static Test suite() { |
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return newTestSuite(ArrayBlockingQueueTest.class, |
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new Fair().testSuite(), |
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new NonFair().testSuite()); |
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/** |
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* Returns a new queue of given size containing consecutive |
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* Integers 0 ... n - 1. |
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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) {} |
108 |
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public void testConstructor_nonPositiveCapacity() { |
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for (int i : new int[] { 0, -1, Integer.MIN_VALUE }) { |
110 |
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try { |
111 |
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new ArrayBlockingQueue(i); |
112 |
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shouldThrow(); |
113 |
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} catch (IllegalArgumentException success) {} |
114 |
> |
for (boolean fair : new boolean[] { true, false }) { |
115 |
> |
try { |
116 |
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new ArrayBlockingQueue(i, fair); |
117 |
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shouldThrow(); |
118 |
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} catch (IllegalArgumentException success) {} |
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> |
} |
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} |
121 |
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} |
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|
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/** |
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* Initializing from null Collection throws NPE |
125 |
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*/ |
126 |
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public void testConstructor3() { |
126 |
> |
public void testConstructor_nullCollection() { |
127 |
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try { |
128 |
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ArrayBlockingQueue q = new ArrayBlockingQueue(1, true, null); |
128 |
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new ArrayBlockingQueue(1, true, null); |
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shouldThrow(); |
130 |
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} catch (NullPointerException success) {} |
131 |
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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() { |
137 |
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Collection<Integer> elements = Arrays.asList(new Integer[SIZE]); |
138 |
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try { |
139 |
< |
Integer[] ints = new Integer[SIZE]; |
88 |
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ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE, false, Arrays.asList(ints)); |
139 |
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new ArrayBlockingQueue(SIZE, false, elements); |
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shouldThrow(); |
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} catch (NullPointerException success) {} |
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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() { |
148 |
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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; |
151 |
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Collection<Integer> elements = Arrays.asList(ints); |
152 |
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try { |
153 |
< |
Integer[] ints = new Integer[SIZE]; |
99 |
< |
for (int i = 0; i < SIZE-1; ++i) |
100 |
< |
ints[i] = new Integer(i); |
101 |
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ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE, false, Arrays.asList(ints)); |
153 |
> |
new ArrayBlockingQueue(SIZE, false, elements); |
154 |
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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 |
< |
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) |
113 |
< |
ints[i] = new Integer(i); |
114 |
< |
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 |
|
} |
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 |
|
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 |
|
assertEquals(2, q.remainingCapacity()); |
192 |
|
q.add(one); |
193 |
|
assertFalse(q.isEmpty()); |
194 |
< |
q.add(two); |
194 |
> |
assertTrue(q.offer(two)); |
195 |
|
assertFalse(q.isEmpty()); |
196 |
|
assertEquals(0, q.remainingCapacity()); |
197 |
|
assertFalse(q.offer(three)); |
201 |
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* remainingCapacity decreases on add, increases on remove |
202 |
|
*/ |
203 |
|
public void testRemainingCapacity() { |
204 |
< |
ArrayBlockingQueue q = populatedQueue(SIZE); |
205 |
< |
for (int i = 0; i < SIZE; ++i) { |
206 |
< |
assertEquals(i, q.remainingCapacity()); |
207 |
< |
assertEquals(SIZE-i, q.size()); |
208 |
< |
q.remove(); |
204 |
> |
int size = ThreadLocalRandom.current().nextInt(1, SIZE); |
205 |
> |
BlockingQueue q = populatedQueue(size, size, 2 * size, false); |
206 |
> |
int spare = q.remainingCapacity(); |
207 |
> |
int capacity = spare + size; |
208 |
> |
for (int i = 0; i < size; i++) { |
209 |
> |
assertEquals(spare + i, q.remainingCapacity()); |
210 |
> |
assertEquals(capacity, q.size() + q.remainingCapacity()); |
211 |
> |
assertEquals(i, q.remove()); |
212 |
|
} |
213 |
< |
for (int i = 0; i < SIZE; ++i) { |
214 |
< |
assertEquals(SIZE-i, q.remainingCapacity()); |
215 |
< |
assertEquals(i, q.size()); |
216 |
< |
q.add(new Integer(i)); |
213 |
> |
for (int i = 0; i < size; i++) { |
214 |
> |
assertEquals(capacity - i, q.remainingCapacity()); |
215 |
> |
assertEquals(capacity, q.size() + q.remainingCapacity()); |
216 |
> |
assertTrue(q.add(i)); |
217 |
|
} |
218 |
|
} |
219 |
|
|
220 |
|
/** |
164 |
– |
* offer(null) throws NPE |
165 |
– |
*/ |
166 |
– |
public void testOfferNull() { |
167 |
– |
try { |
168 |
– |
ArrayBlockingQueue q = new ArrayBlockingQueue(1); |
169 |
– |
q.offer(null); |
170 |
– |
shouldThrow(); |
171 |
– |
} catch (NullPointerException success) {} |
172 |
– |
} |
173 |
– |
|
174 |
– |
/** |
175 |
– |
* add(null) throws NPE |
176 |
– |
*/ |
177 |
– |
public void testAddNull() { |
178 |
– |
try { |
179 |
– |
ArrayBlockingQueue q = new ArrayBlockingQueue(1); |
180 |
– |
q.add(null); |
181 |
– |
shouldThrow(); |
182 |
– |
} catch (NullPointerException success) {} |
183 |
– |
} |
184 |
– |
|
185 |
– |
/** |
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); |
200 |
< |
for (int i = 0; i < SIZE; ++i) { |
201 |
< |
assertTrue(q.add(new Integer(i))); |
202 |
< |
} |
203 |
< |
assertEquals(0, q.remainingCapacity()); |
204 |
< |
q.add(new Integer(SIZE)); |
237 |
> |
q.add((Integer) SIZE); |
238 |
|
shouldThrow(); |
239 |
|
} catch (IllegalStateException success) {} |
240 |
|
} |
241 |
|
|
242 |
|
/** |
210 |
– |
* addAll(null) throws NPE |
211 |
– |
*/ |
212 |
– |
public void testAddAll1() { |
213 |
– |
try { |
214 |
– |
ArrayBlockingQueue q = new ArrayBlockingQueue(1); |
215 |
– |
q.addAll(null); |
216 |
– |
shouldThrow(); |
217 |
– |
} catch (NullPointerException success) {} |
218 |
– |
} |
219 |
– |
|
220 |
– |
/** |
243 |
|
* addAll(this) throws IAE |
244 |
|
*/ |
245 |
|
public void testAddAllSelf() { |
246 |
+ |
ArrayBlockingQueue q = populatedQueue(SIZE); |
247 |
|
try { |
225 |
– |
ArrayBlockingQueue q = populatedQueue(SIZE); |
248 |
|
q.addAll(q); |
249 |
|
shouldThrow(); |
250 |
|
} catch (IllegalArgumentException success) {} |
251 |
|
} |
252 |
|
|
231 |
– |
|
232 |
– |
/** |
233 |
– |
* addAll of a collection with null elements throws NPE |
234 |
– |
*/ |
235 |
– |
public void testAddAll2() { |
236 |
– |
try { |
237 |
– |
ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE); |
238 |
– |
Integer[] ints = new Integer[SIZE]; |
239 |
– |
q.addAll(Arrays.asList(ints)); |
240 |
– |
shouldThrow(); |
241 |
– |
} catch (NullPointerException success) {} |
242 |
– |
} |
243 |
– |
|
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 { |
250 |
– |
ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE); |
251 |
– |
Integer[] ints = new Integer[SIZE]; |
252 |
– |
for (int i = 0; i < SIZE-1; ++i) |
253 |
– |
ints[i] = new Integer(i); |
263 |
|
q.addAll(Arrays.asList(ints)); |
264 |
|
shouldThrow(); |
265 |
|
} catch (NullPointerException success) {} |
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(1, SIZE); |
273 |
> |
ArrayBlockingQueue q = populatedQueue(0, size, size, false); |
274 |
> |
// Just fits: |
275 |
> |
q.addAll(populatedQueue(size, size, 2 * size, false)); |
276 |
> |
assertEquals(0, q.remainingCapacity()); |
277 |
> |
assertEquals(size, q.size()); |
278 |
> |
assertEquals(0, q.peek()); |
279 |
|
try { |
280 |
< |
ArrayBlockingQueue q = new ArrayBlockingQueue(1); |
281 |
< |
Integer[] ints = new Integer[SIZE]; |
266 |
< |
for (int i = 0; i < SIZE; ++i) |
267 |
< |
ints[i] = new Integer(i); |
268 |
< |
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 |
|
} |
299 |
|
} |
300 |
|
|
301 |
|
/** |
289 |
– |
* put(null) throws NPE |
290 |
– |
*/ |
291 |
– |
public void testPutNull() throws InterruptedException { |
292 |
– |
try { |
293 |
– |
ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE); |
294 |
– |
q.put(null); |
295 |
– |
shouldThrow(); |
296 |
– |
} catch (NullPointerException success) {} |
297 |
– |
} |
298 |
– |
|
299 |
– |
/** |
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 |
> |
assertThreadBlocks(t, Thread.State.WAITING); |
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); |
355 |
< |
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 |
> |
assertThreadBlocks(t, Thread.State.WAITING); |
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 |
+ |
assertFalse(Thread.interrupted()); |
403 |
|
}}); |
404 |
|
|
405 |
< |
t.start(); |
406 |
< |
Thread.sleep(SHORT_DELAY_MS); |
405 |
> |
await(pleaseInterrupt); |
406 |
> |
assertThreadBlocks(t, Thread.State.TIMED_WAITING); |
407 |
|
t.interrupt(); |
408 |
< |
t.join(); |
408 |
> |
awaitTermination(t); |
409 |
|
} |
410 |
|
|
411 |
|
/** |
423 |
|
*/ |
424 |
|
public void testBlockingTake() throws InterruptedException { |
425 |
|
final ArrayBlockingQueue q = populatedQueue(SIZE); |
426 |
< |
Thread t = new Thread(new CheckedRunnable() { |
426 |
> |
final CountDownLatch pleaseInterrupt = new CountDownLatch(1); |
427 |
> |
Thread t = newStartedThread(new CheckedRunnable() { |
428 |
|
public void realRun() throws InterruptedException { |
429 |
< |
for (int i = 0; i < SIZE; ++i) { |
430 |
< |
assertEquals(i, q.take()); |
431 |
< |
} |
429 |
> |
for (int i = 0; i < SIZE; i++) assertEquals(i, q.take()); |
430 |
> |
|
431 |
> |
Thread.currentThread().interrupt(); |
432 |
|
try { |
433 |
|
q.take(); |
434 |
|
shouldThrow(); |
435 |
|
} catch (InterruptedException success) {} |
436 |
+ |
assertFalse(Thread.interrupted()); |
437 |
+ |
|
438 |
+ |
pleaseInterrupt.countDown(); |
439 |
+ |
try { |
440 |
+ |
q.take(); |
441 |
+ |
shouldThrow(); |
442 |
+ |
} catch (InterruptedException success) {} |
443 |
+ |
assertFalse(Thread.interrupted()); |
444 |
|
}}); |
445 |
|
|
446 |
< |
t.start(); |
447 |
< |
Thread.sleep(SHORT_DELAY_MS); |
446 |
> |
await(pleaseInterrupt); |
447 |
> |
assertThreadBlocks(t, Thread.State.WAITING); |
448 |
|
t.interrupt(); |
449 |
< |
t.join(); |
449 |
> |
awaitTermination(t); |
450 |
|
} |
451 |
|
|
417 |
– |
|
452 |
|
/** |
453 |
|
* poll succeeds unless empty |
454 |
|
*/ |
469 |
|
assertEquals(i, q.poll(0, MILLISECONDS)); |
470 |
|
} |
471 |
|
assertNull(q.poll(0, MILLISECONDS)); |
472 |
+ |
checkEmpty(q); |
473 |
|
} |
474 |
|
|
475 |
|
/** |
478 |
|
public void testTimedPoll() throws InterruptedException { |
479 |
|
ArrayBlockingQueue q = populatedQueue(SIZE); |
480 |
|
for (int i = 0; i < SIZE; ++i) { |
481 |
< |
assertEquals(i, q.poll(SHORT_DELAY_MS, MILLISECONDS)); |
482 |
< |
} |
483 |
< |
assertNull(q.poll(SHORT_DELAY_MS, MILLISECONDS)); |
481 |
> |
long startTime = System.nanoTime(); |
482 |
> |
assertEquals(i, q.poll(LONG_DELAY_MS, MILLISECONDS)); |
483 |
> |
assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS); |
484 |
> |
} |
485 |
> |
long startTime = System.nanoTime(); |
486 |
> |
assertNull(q.poll(timeoutMillis(), MILLISECONDS)); |
487 |
> |
assertTrue(millisElapsedSince(startTime) >= timeoutMillis()); |
488 |
> |
checkEmpty(q); |
489 |
|
} |
490 |
|
|
491 |
|
/** |
493 |
|
* returning timeout status |
494 |
|
*/ |
495 |
|
public void testInterruptedTimedPoll() throws InterruptedException { |
496 |
< |
Thread t = new Thread(new CheckedRunnable() { |
496 |
> |
final BlockingQueue<Integer> q = populatedQueue(SIZE); |
497 |
> |
final CountDownLatch pleaseInterrupt = new CountDownLatch(1); |
498 |
> |
Thread t = newStartedThread(new CheckedRunnable() { |
499 |
|
public void realRun() throws InterruptedException { |
500 |
< |
ArrayBlockingQueue q = populatedQueue(SIZE); |
501 |
< |
for (int i = 0; i < SIZE; ++i) { |
502 |
< |
assertEquals(i, q.poll(SHORT_DELAY_MS, MILLISECONDS));; |
503 |
< |
} |
500 |
> |
long startTime = System.nanoTime(); |
501 |
> |
for (int i = 0; i < SIZE; i++) |
502 |
> |
assertEquals(i, (int) q.poll(LONG_DELAY_MS, MILLISECONDS)); |
503 |
> |
|
504 |
> |
Thread.currentThread().interrupt(); |
505 |
> |
try { |
506 |
> |
q.poll(LONG_DELAY_MS, MILLISECONDS); |
507 |
> |
shouldThrow(); |
508 |
> |
} catch (InterruptedException success) {} |
509 |
> |
assertFalse(Thread.interrupted()); |
510 |
> |
|
511 |
> |
pleaseInterrupt.countDown(); |
512 |
|
try { |
513 |
< |
q.poll(SMALL_DELAY_MS, MILLISECONDS); |
513 |
> |
q.poll(LONG_DELAY_MS, MILLISECONDS); |
514 |
|
shouldThrow(); |
515 |
|
} catch (InterruptedException success) {} |
516 |
+ |
assertFalse(Thread.interrupted()); |
517 |
+ |
|
518 |
+ |
assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS); |
519 |
|
}}); |
520 |
|
|
521 |
< |
t.start(); |
522 |
< |
Thread.sleep(SHORT_DELAY_MS); |
521 |
> |
await(pleaseInterrupt); |
522 |
> |
assertThreadBlocks(t, Thread.State.TIMED_WAITING); |
523 |
|
t.interrupt(); |
524 |
< |
t.join(); |
524 |
> |
awaitTermination(t); |
525 |
> |
checkEmpty(q); |
526 |
|
} |
527 |
|
|
528 |
|
/** |
569 |
|
} |
570 |
|
|
571 |
|
/** |
518 |
– |
* remove(x) removes x and returns true if present |
519 |
– |
*/ |
520 |
– |
public void testRemoveElement() { |
521 |
– |
ArrayBlockingQueue q = populatedQueue(SIZE); |
522 |
– |
for (int i = 1; i < SIZE; i+=2) { |
523 |
– |
assertTrue(q.remove(new Integer(i))); |
524 |
– |
} |
525 |
– |
for (int i = 0; i < SIZE; i+=2) { |
526 |
– |
assertTrue(q.remove(new Integer(i))); |
527 |
– |
assertFalse(q.remove(new Integer(i+1))); |
528 |
– |
} |
529 |
– |
assertTrue(q.isEmpty()); |
530 |
– |
} |
531 |
– |
|
532 |
– |
/** |
572 |
|
* contains(x) reports true when elements added but not yet removed |
573 |
|
*/ |
574 |
|
public void testContains() { |
575 |
< |
ArrayBlockingQueue q = populatedQueue(SIZE); |
576 |
< |
for (int i = 0; i < SIZE; ++i) { |
575 |
> |
int size = ThreadLocalRandom.current().nextInt(1, SIZE); |
576 |
> |
ArrayBlockingQueue q = populatedQueue(size, size, 2 * size, false); |
577 |
> |
assertFalse(q.contains(null)); |
578 |
> |
for (int i = 0; i < size; ++i) { |
579 |
|
assertTrue(q.contains(new Integer(i))); |
580 |
|
assertEquals(i, q.poll()); |
581 |
|
assertFalse(q.contains(new Integer(i))); |
586 |
|
* clear removes all elements |
587 |
|
*/ |
588 |
|
public void testClear() { |
589 |
< |
ArrayBlockingQueue q = populatedQueue(SIZE); |
589 |
> |
int size = ThreadLocalRandom.current().nextInt(1, 5); |
590 |
> |
ArrayBlockingQueue q = populatedQueue(size, size, 2 * size, false); |
591 |
> |
int capacity = size + q.remainingCapacity(); |
592 |
|
q.clear(); |
593 |
|
assertTrue(q.isEmpty()); |
594 |
|
assertEquals(0, q.size()); |
595 |
< |
assertEquals(SIZE, q.remainingCapacity()); |
595 |
> |
assertEquals(capacity, q.remainingCapacity()); |
596 |
|
q.add(one); |
597 |
|
assertFalse(q.isEmpty()); |
598 |
|
assertTrue(q.contains(one)); |
628 |
|
assertTrue(changed); |
629 |
|
|
630 |
|
assertTrue(q.containsAll(p)); |
631 |
< |
assertEquals(SIZE-i, q.size()); |
631 |
> |
assertEquals(SIZE - i, q.size()); |
632 |
|
p.remove(); |
633 |
|
} |
634 |
|
} |
641 |
|
ArrayBlockingQueue q = populatedQueue(SIZE); |
642 |
|
ArrayBlockingQueue p = populatedQueue(i); |
643 |
|
assertTrue(q.removeAll(p)); |
644 |
< |
assertEquals(SIZE-i, q.size()); |
644 |
> |
assertEquals(SIZE - i, q.size()); |
645 |
|
for (int j = 0; j < i; ++j) { |
646 |
< |
Integer I = (Integer)(p.remove()); |
647 |
< |
assertFalse(q.contains(I)); |
646 |
> |
Integer x = (Integer)(p.remove()); |
647 |
> |
assertFalse(q.contains(x)); |
648 |
|
} |
649 |
|
} |
650 |
|
} |
651 |
|
|
652 |
< |
/** |
653 |
< |
* toArray contains all elements |
654 |
< |
*/ |
655 |
< |
public void testToArray() throws InterruptedException { |
656 |
< |
ArrayBlockingQueue q = populatedQueue(SIZE); |
657 |
< |
Object[] o = q.toArray(); |
658 |
< |
for (int i = 0; i < o.length; i++) |
659 |
< |
assertEquals(o[i], q.take()); |
660 |
< |
} |
661 |
< |
|
662 |
< |
/** |
663 |
< |
* toArray(a) contains all elements |
664 |
< |
*/ |
665 |
< |
public void testToArray2() throws InterruptedException { |
666 |
< |
ArrayBlockingQueue q = populatedQueue(SIZE); |
667 |
< |
Integer[] ints = new Integer[SIZE]; |
668 |
< |
ints = (Integer[])q.toArray(ints); |
669 |
< |
for (int i = 0; i < ints.length; i++) |
670 |
< |
assertEquals(ints[i], q.take()); |
652 |
> |
void checkToArray(ArrayBlockingQueue<Integer> q) { |
653 |
> |
int size = q.size(); |
654 |
> |
Object[] a1 = q.toArray(); |
655 |
> |
assertEquals(size, a1.length); |
656 |
> |
Integer[] a2 = q.toArray(new Integer[0]); |
657 |
> |
assertEquals(size, a2.length); |
658 |
> |
Integer[] a3 = q.toArray(new Integer[Math.max(0, size - 1)]); |
659 |
> |
assertEquals(size, a3.length); |
660 |
> |
Integer[] a4 = new Integer[size]; |
661 |
> |
assertSame(a4, q.toArray(a4)); |
662 |
> |
Integer[] a5 = new Integer[size + 1]; |
663 |
> |
Arrays.fill(a5, 42); |
664 |
> |
assertSame(a5, q.toArray(a5)); |
665 |
> |
Integer[] a6 = new Integer[size + 2]; |
666 |
> |
Arrays.fill(a6, 42); |
667 |
> |
assertSame(a6, q.toArray(a6)); |
668 |
> |
Object[][] as = { a1, a2, a3, a4, a5, a6 }; |
669 |
> |
for (Object[] a : as) { |
670 |
> |
if (a.length > size) assertNull(a[size]); |
671 |
> |
if (a.length > size + 1) assertEquals(42, a[size + 1]); |
672 |
> |
} |
673 |
> |
Iterator it = q.iterator(); |
674 |
> |
Integer s = q.peek(); |
675 |
> |
for (int i = 0; i < size; i++) { |
676 |
> |
Integer x = (Integer) it.next(); |
677 |
> |
assertEquals(s + i, (int) x); |
678 |
> |
for (Object[] a : as) |
679 |
> |
assertSame(a1[i], x); |
680 |
> |
} |
681 |
|
} |
682 |
|
|
683 |
|
/** |
684 |
< |
* toArray(null) throws NPE |
685 |
< |
*/ |
686 |
< |
public void testToArray_BadArg() { |
687 |
< |
ArrayBlockingQueue q = populatedQueue(SIZE); |
688 |
< |
try { |
689 |
< |
Object o[] = q.toArray(null); |
690 |
< |
shouldThrow(); |
691 |
< |
} catch (NullPointerException success) {} |
684 |
> |
* toArray() and toArray(a) contain all elements in FIFO order |
685 |
> |
*/ |
686 |
> |
public void testToArray() { |
687 |
> |
final ThreadLocalRandom rnd = ThreadLocalRandom.current(); |
688 |
> |
final int size = rnd.nextInt(6); |
689 |
> |
final int capacity = Math.max(1, size + rnd.nextInt(size + 1)); |
690 |
> |
ArrayBlockingQueue<Integer> q = new ArrayBlockingQueue<>(capacity); |
691 |
> |
for (int i = 0; i < size; i++) { |
692 |
> |
checkToArray(q); |
693 |
> |
q.add(i); |
694 |
> |
} |
695 |
> |
// Provoke wraparound |
696 |
> |
int added = size * 2; |
697 |
> |
for (int i = 0; i < added; i++) { |
698 |
> |
checkToArray(q); |
699 |
> |
assertEquals((Integer) i, q.poll()); |
700 |
> |
q.add(size + i); |
701 |
> |
} |
702 |
> |
for (int i = 0; i < size; i++) { |
703 |
> |
checkToArray(q); |
704 |
> |
assertEquals((Integer) (added + i), q.poll()); |
705 |
> |
} |
706 |
|
} |
707 |
|
|
708 |
|
/** |
709 |
|
* toArray(incompatible array type) throws ArrayStoreException |
710 |
|
*/ |
711 |
< |
public void testToArray1_BadArg() { |
711 |
> |
public void testToArray_incompatibleArrayType() { |
712 |
|
ArrayBlockingQueue q = populatedQueue(SIZE); |
713 |
|
try { |
714 |
|
q.toArray(new String[10]); |
715 |
|
shouldThrow(); |
716 |
|
} catch (ArrayStoreException success) {} |
717 |
+ |
try { |
718 |
+ |
q.toArray(new String[0]); |
719 |
+ |
shouldThrow(); |
720 |
+ |
} catch (ArrayStoreException success) {} |
721 |
|
} |
722 |
|
|
652 |
– |
|
723 |
|
/** |
724 |
|
* iterator iterates through all elements |
725 |
|
*/ |
726 |
|
public void testIterator() throws InterruptedException { |
727 |
|
ArrayBlockingQueue q = populatedQueue(SIZE); |
728 |
|
Iterator it = q.iterator(); |
729 |
< |
while (it.hasNext()) { |
729 |
> |
int i; |
730 |
> |
for (i = 0; it.hasNext(); i++) |
731 |
> |
assertTrue(q.contains(it.next())); |
732 |
> |
assertEquals(i, SIZE); |
733 |
> |
assertIteratorExhausted(it); |
734 |
> |
|
735 |
> |
it = q.iterator(); |
736 |
> |
for (i = 0; it.hasNext(); i++) |
737 |
|
assertEquals(it.next(), q.take()); |
738 |
< |
} |
738 |
> |
assertEquals(i, SIZE); |
739 |
> |
assertIteratorExhausted(it); |
740 |
> |
} |
741 |
> |
|
742 |
> |
/** |
743 |
> |
* iterator of empty collection has no elements |
744 |
> |
*/ |
745 |
> |
public void testEmptyIterator() { |
746 |
> |
assertIteratorExhausted(new ArrayBlockingQueue(SIZE).iterator()); |
747 |
|
} |
748 |
|
|
749 |
|
/** |
798 |
|
assertEquals(0, q.size()); |
799 |
|
} |
800 |
|
|
716 |
– |
|
801 |
|
/** |
802 |
|
* toString contains toStrings of elements |
803 |
|
*/ |
805 |
|
ArrayBlockingQueue q = populatedQueue(SIZE); |
806 |
|
String s = q.toString(); |
807 |
|
for (int i = 0; i < SIZE; ++i) { |
808 |
< |
assertTrue(s.indexOf(String.valueOf(i)) >= 0); |
808 |
> |
assertTrue(s.contains(String.valueOf(i))); |
809 |
|
} |
810 |
|
} |
811 |
|
|
728 |
– |
|
812 |
|
/** |
813 |
|
* offer transfers elements across Executor tasks |
814 |
|
*/ |
816 |
|
final ArrayBlockingQueue q = new ArrayBlockingQueue(2); |
817 |
|
q.add(one); |
818 |
|
q.add(two); |
819 |
< |
ExecutorService executor = Executors.newFixedThreadPool(2); |
820 |
< |
executor.execute(new CheckedRunnable() { |
821 |
< |
public void realRun() throws InterruptedException { |
822 |
< |
assertFalse(q.offer(three)); |
823 |
< |
assertTrue(q.offer(three, MEDIUM_DELAY_MS, MILLISECONDS)); |
824 |
< |
assertEquals(0, q.remainingCapacity()); |
825 |
< |
}}); |
826 |
< |
|
827 |
< |
executor.execute(new CheckedRunnable() { |
828 |
< |
public void realRun() throws InterruptedException { |
829 |
< |
Thread.sleep(SMALL_DELAY_MS); |
830 |
< |
assertSame(one, q.take()); |
831 |
< |
}}); |
832 |
< |
|
833 |
< |
joinPool(executor); |
819 |
> |
final CheckedBarrier threadsStarted = new CheckedBarrier(2); |
820 |
> |
final ExecutorService executor = Executors.newFixedThreadPool(2); |
821 |
> |
try (PoolCleaner cleaner = cleaner(executor)) { |
822 |
> |
executor.execute(new CheckedRunnable() { |
823 |
> |
public void realRun() throws InterruptedException { |
824 |
> |
assertFalse(q.offer(three)); |
825 |
> |
threadsStarted.await(); |
826 |
> |
assertTrue(q.offer(three, LONG_DELAY_MS, MILLISECONDS)); |
827 |
> |
assertEquals(0, q.remainingCapacity()); |
828 |
> |
}}); |
829 |
> |
|
830 |
> |
executor.execute(new CheckedRunnable() { |
831 |
> |
public void realRun() throws InterruptedException { |
832 |
> |
threadsStarted.await(); |
833 |
> |
assertEquals(0, q.remainingCapacity()); |
834 |
> |
assertSame(one, q.take()); |
835 |
> |
}}); |
836 |
> |
} |
837 |
|
} |
838 |
|
|
839 |
|
/** |
840 |
< |
* poll retrieves elements across Executor threads |
840 |
> |
* timed poll retrieves elements across Executor threads |
841 |
|
*/ |
842 |
|
public void testPollInExecutor() { |
843 |
|
final ArrayBlockingQueue q = new ArrayBlockingQueue(2); |
844 |
< |
ExecutorService executor = Executors.newFixedThreadPool(2); |
845 |
< |
executor.execute(new CheckedRunnable() { |
846 |
< |
public void realRun() throws InterruptedException { |
847 |
< |
assertNull(q.poll()); |
848 |
< |
assertSame(one, q.poll(MEDIUM_DELAY_MS, MILLISECONDS)); |
849 |
< |
assertTrue(q.isEmpty()); |
850 |
< |
}}); |
851 |
< |
|
852 |
< |
executor.execute(new CheckedRunnable() { |
853 |
< |
public void realRun() throws InterruptedException { |
854 |
< |
Thread.sleep(SMALL_DELAY_MS); |
855 |
< |
q.put(one); |
856 |
< |
}}); |
857 |
< |
|
858 |
< |
joinPool(executor); |
844 |
> |
final CheckedBarrier threadsStarted = new CheckedBarrier(2); |
845 |
> |
final ExecutorService executor = Executors.newFixedThreadPool(2); |
846 |
> |
try (PoolCleaner cleaner = cleaner(executor)) { |
847 |
> |
executor.execute(new CheckedRunnable() { |
848 |
> |
public void realRun() throws InterruptedException { |
849 |
> |
assertNull(q.poll()); |
850 |
> |
threadsStarted.await(); |
851 |
> |
assertSame(one, q.poll(LONG_DELAY_MS, MILLISECONDS)); |
852 |
> |
checkEmpty(q); |
853 |
> |
}}); |
854 |
> |
|
855 |
> |
executor.execute(new CheckedRunnable() { |
856 |
> |
public void realRun() throws InterruptedException { |
857 |
> |
threadsStarted.await(); |
858 |
> |
q.put(one); |
859 |
> |
}}); |
860 |
> |
} |
861 |
|
} |
862 |
|
|
863 |
|
/** |
864 |
|
* A deserialized serialized queue has same elements in same order |
865 |
|
*/ |
866 |
|
public void testSerialization() throws Exception { |
867 |
< |
ArrayBlockingQueue q = populatedQueue(SIZE); |
868 |
< |
|
781 |
< |
ByteArrayOutputStream bout = new ByteArrayOutputStream(10000); |
782 |
< |
ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout)); |
783 |
< |
out.writeObject(q); |
784 |
< |
out.close(); |
867 |
> |
Queue x = populatedQueue(SIZE); |
868 |
> |
Queue y = serialClone(x); |
869 |
|
|
870 |
< |
ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray()); |
871 |
< |
ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin)); |
872 |
< |
ArrayBlockingQueue r = (ArrayBlockingQueue)in.readObject(); |
873 |
< |
assertEquals(q.size(), r.size()); |
874 |
< |
while (!q.isEmpty()) |
875 |
< |
assertEquals(q.remove(), r.remove()); |
876 |
< |
} |
877 |
< |
|
878 |
< |
/** |
795 |
< |
* drainTo(null) throws NPE |
796 |
< |
*/ |
797 |
< |
public void testDrainToNull() { |
798 |
< |
ArrayBlockingQueue q = populatedQueue(SIZE); |
799 |
< |
try { |
800 |
< |
q.drainTo(null); |
801 |
< |
shouldThrow(); |
802 |
< |
} catch (NullPointerException success) {} |
803 |
< |
} |
804 |
< |
|
805 |
< |
/** |
806 |
< |
* drainTo(this) throws IAE |
807 |
< |
*/ |
808 |
< |
public void testDrainToSelf() { |
809 |
< |
ArrayBlockingQueue q = populatedQueue(SIZE); |
810 |
< |
try { |
811 |
< |
q.drainTo(q); |
812 |
< |
shouldThrow(); |
813 |
< |
} catch (IllegalArgumentException success) {} |
870 |
> |
assertNotSame(x, y); |
871 |
> |
assertEquals(x.size(), y.size()); |
872 |
> |
assertEquals(x.toString(), y.toString()); |
873 |
> |
assertTrue(Arrays.equals(x.toArray(), y.toArray())); |
874 |
> |
while (!x.isEmpty()) { |
875 |
> |
assertFalse(y.isEmpty()); |
876 |
> |
assertEquals(x.remove(), y.remove()); |
877 |
> |
} |
878 |
> |
assertTrue(y.isEmpty()); |
879 |
|
} |
880 |
|
|
881 |
|
/** |
885 |
|
ArrayBlockingQueue q = populatedQueue(SIZE); |
886 |
|
ArrayList l = new ArrayList(); |
887 |
|
q.drainTo(l); |
888 |
< |
assertEquals(q.size(), 0); |
889 |
< |
assertEquals(l.size(), SIZE); |
888 |
> |
assertEquals(0, q.size()); |
889 |
> |
assertEquals(SIZE, l.size()); |
890 |
|
for (int i = 0; i < SIZE; ++i) |
891 |
|
assertEquals(l.get(i), new Integer(i)); |
892 |
|
q.add(zero); |
896 |
|
assertTrue(q.contains(one)); |
897 |
|
l.clear(); |
898 |
|
q.drainTo(l); |
899 |
< |
assertEquals(q.size(), 0); |
900 |
< |
assertEquals(l.size(), 2); |
899 |
> |
assertEquals(0, q.size()); |
900 |
> |
assertEquals(2, l.size()); |
901 |
|
for (int i = 0; i < 2; ++i) |
902 |
|
assertEquals(l.get(i), new Integer(i)); |
903 |
|
} |
909 |
|
final ArrayBlockingQueue q = populatedQueue(SIZE); |
910 |
|
Thread t = new Thread(new CheckedRunnable() { |
911 |
|
public void realRun() throws InterruptedException { |
912 |
< |
q.put(new Integer(SIZE+1)); |
912 |
> |
q.put(new Integer(SIZE + 1)); |
913 |
|
}}); |
914 |
|
|
915 |
|
t.start(); |
923 |
|
} |
924 |
|
|
925 |
|
/** |
861 |
– |
* drainTo(null, n) throws NPE |
862 |
– |
*/ |
863 |
– |
public void testDrainToNullN() { |
864 |
– |
ArrayBlockingQueue q = populatedQueue(SIZE); |
865 |
– |
try { |
866 |
– |
q.drainTo(null, 0); |
867 |
– |
shouldThrow(); |
868 |
– |
} catch (NullPointerException success) {} |
869 |
– |
} |
870 |
– |
|
871 |
– |
/** |
872 |
– |
* drainTo(this, n) throws IAE |
873 |
– |
*/ |
874 |
– |
public void testDrainToSelfN() { |
875 |
– |
ArrayBlockingQueue q = populatedQueue(SIZE); |
876 |
– |
try { |
877 |
– |
q.drainTo(q, 0); |
878 |
– |
shouldThrow(); |
879 |
– |
} catch (IllegalArgumentException success) {} |
880 |
– |
} |
881 |
– |
|
882 |
– |
/** |
926 |
|
* drainTo(c, n) empties first min(n, size) elements of queue into c |
927 |
|
*/ |
928 |
|
public void testDrainToN() { |
929 |
< |
ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE*2); |
929 |
> |
ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE * 2); |
930 |
|
for (int i = 0; i < SIZE + 2; ++i) { |
931 |
|
for (int j = 0; j < SIZE; j++) |
932 |
|
assertTrue(q.offer(new Integer(j))); |
933 |
|
ArrayList l = new ArrayList(); |
934 |
|
q.drainTo(l, i); |
935 |
|
int k = (i < SIZE) ? i : SIZE; |
936 |
< |
assertEquals(l.size(), k); |
937 |
< |
assertEquals(q.size(), SIZE-k); |
936 |
> |
assertEquals(k, l.size()); |
937 |
> |
assertEquals(SIZE - k, q.size()); |
938 |
|
for (int j = 0; j < k; ++j) |
939 |
|
assertEquals(l.get(j), new Integer(j)); |
940 |
< |
while (q.poll() != null) ; |
940 |
> |
do {} while (q.poll() != null); |
941 |
|
} |
942 |
|
} |
943 |
|
|
944 |
+ |
/** |
945 |
+ |
* remove(null), contains(null) always return false |
946 |
+ |
*/ |
947 |
+ |
public void testNeverContainsNull() { |
948 |
+ |
Collection<?>[] qs = { |
949 |
+ |
populatedQueue(0, 1, 10, false), |
950 |
+ |
populatedQueue(2, 2, 10, true), |
951 |
+ |
}; |
952 |
+ |
|
953 |
+ |
for (Collection<?> q : qs) { |
954 |
+ |
assertFalse(q.contains(null)); |
955 |
+ |
assertFalse(q.remove(null)); |
956 |
+ |
} |
957 |
+ |
} |
958 |
|
} |