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/* |
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* Written by members of JCP JSR-166 Expert Group and released to the |
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* public domain. Use, modify, and redistribute this code in any way |
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* without acknowledgement. Other contributors include Andrew Wright, |
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* Jeffrey Hayes, Pat Fischer, Mike Judd. |
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* Written by Doug Lea with assistance from members of JCP JSR-166 |
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* Expert Group and released to the public domain, as explained at |
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* http://creativecommons.org/publicdomain/zero/1.0/ |
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* Other contributors include Andrew Wright, Jeffrey Hayes, |
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* Pat Fisher, Mike Judd. |
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*/ |
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|
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import junit.framework.*; |
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import java.util.*; |
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import java.util.concurrent.*; |
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import java.io.*; |
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import static java.util.concurrent.TimeUnit.MILLISECONDS; |
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|
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import java.util.ArrayList; |
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import java.util.Arrays; |
13 |
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import java.util.Collection; |
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import java.util.Iterator; |
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import java.util.NoSuchElementException; |
16 |
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import java.util.Queue; |
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import java.util.concurrent.BlockingQueue; |
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import java.util.concurrent.CountDownLatch; |
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import java.util.concurrent.Executors; |
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import java.util.concurrent.ExecutorService; |
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import java.util.concurrent.LinkedBlockingQueue; |
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|
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import junit.framework.Test; |
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|
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public class LinkedBlockingQueueTest extends JSR166TestCase { |
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|
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public static class Unbounded extends BlockingQueueTest { |
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protected BlockingQueue emptyCollection() { |
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return new LinkedBlockingQueue(); |
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} |
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} |
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|
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public static class Bounded extends BlockingQueueTest { |
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protected BlockingQueue emptyCollection() { |
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return new LinkedBlockingQueue(SIZE); |
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} |
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} |
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|
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public static void main(String[] args) { |
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junit.textui.TestRunner.run (suite()); |
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main(suite(), args); |
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} |
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|
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public static Test suite() { |
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return new TestSuite(LinkedBlockingQueueTest.class); |
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class Implementation implements CollectionImplementation { |
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public Class<?> klazz() { return LinkedBlockingQueue.class; } |
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public Collection emptyCollection() { return new LinkedBlockingQueue(); } |
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public Object makeElement(int i) { return JSR166TestCase.itemFor(i); } |
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public boolean isConcurrent() { return true; } |
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public boolean permitsNulls() { return false; } |
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} |
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return newTestSuite(LinkedBlockingQueueTest.class, |
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new Unbounded().testSuite(), |
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new Bounded().testSuite(), |
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CollectionTest.testSuite(new Implementation())); |
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} |
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|
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– |
|
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/** |
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* Create a queue of given size containing consecutive |
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* Integers 0 ... n. |
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* Returns a new queue of given size containing consecutive |
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* Items 0 ... n - 1. |
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*/ |
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private LinkedBlockingQueue populatedQueue(int n) { |
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LinkedBlockingQueue q = new LinkedBlockingQueue(n); |
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private static LinkedBlockingQueue<Item> populatedQueue(int n) { |
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LinkedBlockingQueue<Item> q = new LinkedBlockingQueue<>(n); |
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assertTrue(q.isEmpty()); |
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for(int i = 0; i < n; i++) |
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assertTrue(q.offer(new Integer(i))); |
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for (int i = 0; i < n; i++) |
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mustOffer(q, 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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mustEqual(0, q.remainingCapacity()); |
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mustEqual(n, q.size()); |
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mustEqual(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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/** |
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* |
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* A new queue has the indicated capacity, or Integer.MAX_VALUE if |
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* none given |
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*/ |
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public void testConstructor1() { |
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assertEquals(SIZE, new LinkedBlockingQueue(SIZE).remainingCapacity()); |
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mustEqual(SIZE, new LinkedBlockingQueue<Item>(SIZE).remainingCapacity()); |
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mustEqual(Integer.MAX_VALUE, new LinkedBlockingQueue<Item>().remainingCapacity()); |
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} |
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|
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/** |
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* |
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* Constructor throws IllegalArgumentException if capacity argument nonpositive |
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*/ |
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public void testConstructor2() { |
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try { |
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LinkedBlockingQueue q = new LinkedBlockingQueue(0); |
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new LinkedBlockingQueue<Item>(0); |
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shouldThrow(); |
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} |
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catch (IllegalArgumentException success) {} |
89 |
> |
} catch (IllegalArgumentException success) {} |
90 |
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} |
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|
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/** |
93 |
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* |
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* Initializing from null Collection throws NullPointerException |
94 |
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*/ |
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public void testConstructor3() { |
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|
96 |
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try { |
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LinkedBlockingQueue q = new LinkedBlockingQueue(null); |
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new LinkedBlockingQueue<Item>(null); |
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shouldThrow(); |
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} |
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catch (NullPointerException success) {} |
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} catch (NullPointerException success) {} |
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} |
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|
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/** |
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* |
103 |
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* Initializing from Collection of null elements throws NullPointerException |
104 |
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*/ |
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public void testConstructor4() { |
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Collection<Item> elements = Arrays.asList(new Item[SIZE]); |
107 |
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try { |
108 |
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Integer[] ints = new Integer[SIZE]; |
75 |
< |
LinkedBlockingQueue q = new LinkedBlockingQueue(Arrays.asList(ints)); |
108 |
> |
new LinkedBlockingQueue<Item>(elements); |
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shouldThrow(); |
110 |
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} |
78 |
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catch (NullPointerException success) {} |
110 |
> |
} catch (NullPointerException success) {} |
111 |
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} |
112 |
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|
113 |
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/** |
114 |
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* |
114 |
> |
* Initializing from Collection with some null elements throws |
115 |
> |
* NullPointerException |
116 |
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*/ |
117 |
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public void testConstructor5() { |
118 |
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Item[] items = new Item[2]; |
119 |
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items[0] = zero; |
120 |
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Collection<Item> elements = Arrays.asList(items); |
121 |
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try { |
122 |
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Integer[] ints = new Integer[SIZE]; |
87 |
< |
for (int i = 0; i < SIZE-1; ++i) |
88 |
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ints[i] = new Integer(i); |
89 |
< |
LinkedBlockingQueue q = new LinkedBlockingQueue(Arrays.asList(ints)); |
122 |
> |
new LinkedBlockingQueue<Item>(elements); |
123 |
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shouldThrow(); |
124 |
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} |
92 |
< |
catch (NullPointerException success) {} |
124 |
> |
} catch (NullPointerException success) {} |
125 |
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} |
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|
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/** |
128 |
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* |
128 |
> |
* Queue contains all elements of collection used to initialize |
129 |
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*/ |
130 |
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public void testConstructor6() { |
131 |
< |
try { |
132 |
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Integer[] ints = new Integer[SIZE]; |
133 |
< |
for (int i = 0; i < SIZE; ++i) |
134 |
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ints[i] = new Integer(i); |
103 |
< |
LinkedBlockingQueue q = new LinkedBlockingQueue(Arrays.asList(ints)); |
104 |
< |
for (int i = 0; i < SIZE; ++i) |
105 |
< |
assertEquals(ints[i], q.poll()); |
106 |
< |
} |
107 |
< |
finally {} |
131 |
> |
Item[] items = defaultItems; |
132 |
> |
LinkedBlockingQueue<Item> q = new LinkedBlockingQueue<>(Arrays.asList(items)); |
133 |
> |
for (int i = 0; i < SIZE; ++i) |
134 |
> |
mustEqual(items[i], q.poll()); |
135 |
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} |
136 |
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|
137 |
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/** |
138 |
< |
* |
138 |
> |
* Queue transitions from empty to full when elements added |
139 |
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*/ |
140 |
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public void testEmptyFull() { |
141 |
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LinkedBlockingQueue q = new LinkedBlockingQueue(2); |
141 |
> |
LinkedBlockingQueue<Item> q = new LinkedBlockingQueue<>(2); |
142 |
|
assertTrue(q.isEmpty()); |
143 |
< |
assertEquals("should have room for 2", 2, q.remainingCapacity()); |
143 |
> |
mustEqual(2, q.remainingCapacity()); |
144 |
|
q.add(one); |
145 |
|
assertFalse(q.isEmpty()); |
146 |
|
q.add(two); |
147 |
|
assertFalse(q.isEmpty()); |
148 |
< |
assertEquals(0, q.remainingCapacity()); |
148 |
> |
mustEqual(0, q.remainingCapacity()); |
149 |
|
assertFalse(q.offer(three)); |
150 |
|
} |
151 |
|
|
152 |
|
/** |
153 |
< |
* |
153 |
> |
* remainingCapacity decreases on add, increases on remove |
154 |
|
*/ |
155 |
|
public void testRemainingCapacity() { |
156 |
< |
LinkedBlockingQueue q = populatedQueue(SIZE); |
156 |
> |
BlockingQueue<Item> q = populatedQueue(SIZE); |
157 |
|
for (int i = 0; i < SIZE; ++i) { |
158 |
< |
assertEquals(i, q.remainingCapacity()); |
159 |
< |
assertEquals(SIZE-i, q.size()); |
160 |
< |
q.remove(); |
158 |
> |
mustEqual(i, q.remainingCapacity()); |
159 |
> |
mustEqual(SIZE, q.size() + q.remainingCapacity()); |
160 |
> |
mustEqual(i, q.remove()); |
161 |
|
} |
162 |
|
for (int i = 0; i < SIZE; ++i) { |
163 |
< |
assertEquals(SIZE-i, q.remainingCapacity()); |
164 |
< |
assertEquals(i, q.size()); |
165 |
< |
q.add(new Integer(i)); |
163 |
> |
mustEqual(SIZE - i, q.remainingCapacity()); |
164 |
> |
mustEqual(SIZE, q.size() + q.remainingCapacity()); |
165 |
> |
mustAdd(q, i); |
166 |
|
} |
167 |
|
} |
168 |
|
|
169 |
|
/** |
170 |
< |
* |
144 |
< |
*/ |
145 |
< |
public void testOfferNull() { |
146 |
< |
try { |
147 |
< |
LinkedBlockingQueue q = new LinkedBlockingQueue(1); |
148 |
< |
q.offer(null); |
149 |
< |
shouldThrow(); |
150 |
< |
} catch (NullPointerException success) { } |
151 |
< |
} |
152 |
< |
|
153 |
< |
/** |
154 |
< |
* |
170 |
> |
* Offer succeeds if not full; fails if full |
171 |
|
*/ |
172 |
|
public void testOffer() { |
173 |
< |
LinkedBlockingQueue q = new LinkedBlockingQueue(1); |
173 |
> |
LinkedBlockingQueue<Item> q = new LinkedBlockingQueue<>(1); |
174 |
|
assertTrue(q.offer(zero)); |
175 |
|
assertFalse(q.offer(one)); |
176 |
|
} |
177 |
|
|
178 |
|
/** |
179 |
< |
* |
179 |
> |
* add succeeds if not full; throws IllegalStateException if full |
180 |
|
*/ |
181 |
|
public void testAdd() { |
182 |
< |
try { |
183 |
< |
LinkedBlockingQueue q = new LinkedBlockingQueue(SIZE); |
184 |
< |
for (int i = 0; i < SIZE; ++i) { |
185 |
< |
assertTrue(q.add(new Integer(i))); |
170 |
< |
} |
171 |
< |
assertEquals(0, q.remainingCapacity()); |
172 |
< |
q.add(new Integer(SIZE)); |
173 |
< |
} catch (IllegalStateException success){ |
174 |
< |
} |
175 |
< |
} |
176 |
< |
|
177 |
< |
/** |
178 |
< |
* |
179 |
< |
*/ |
180 |
< |
public void testAddAll1() { |
182 |
> |
LinkedBlockingQueue<Item> q = new LinkedBlockingQueue<>(SIZE); |
183 |
> |
for (int i = 0; i < SIZE; ++i) |
184 |
> |
mustAdd(q, i); |
185 |
> |
mustEqual(0, q.remainingCapacity()); |
186 |
|
try { |
187 |
< |
LinkedBlockingQueue q = new LinkedBlockingQueue(1); |
183 |
< |
q.addAll(null); |
187 |
> |
q.add(new Item(SIZE)); |
188 |
|
shouldThrow(); |
189 |
< |
} |
186 |
< |
catch (NullPointerException success) {} |
189 |
> |
} catch (IllegalStateException success) {} |
190 |
|
} |
191 |
+ |
|
192 |
|
/** |
193 |
< |
* |
193 |
> |
* addAll(this) throws IllegalArgumentException |
194 |
|
*/ |
195 |
< |
public void testAddAll2() { |
195 |
> |
public void testAddAllSelf() { |
196 |
> |
LinkedBlockingQueue<Item> q = populatedQueue(SIZE); |
197 |
|
try { |
198 |
< |
LinkedBlockingQueue q = new LinkedBlockingQueue(SIZE); |
194 |
< |
Integer[] ints = new Integer[SIZE]; |
195 |
< |
q.addAll(Arrays.asList(ints)); |
198 |
> |
q.addAll(q); |
199 |
|
shouldThrow(); |
200 |
< |
} |
198 |
< |
catch (NullPointerException success) {} |
200 |
> |
} catch (IllegalArgumentException success) {} |
201 |
|
} |
202 |
+ |
|
203 |
|
/** |
204 |
< |
* |
204 |
> |
* addAll of a collection with any null elements throws NPE after |
205 |
> |
* possibly adding some elements |
206 |
|
*/ |
207 |
|
public void testAddAll3() { |
208 |
+ |
LinkedBlockingQueue<Item> q = new LinkedBlockingQueue<>(SIZE); |
209 |
+ |
Item[] items = new Item[2]; items[0] = zero; |
210 |
+ |
Collection<Item> elements = Arrays.asList(items); |
211 |
|
try { |
212 |
< |
LinkedBlockingQueue q = new LinkedBlockingQueue(SIZE); |
206 |
< |
Integer[] ints = new Integer[SIZE]; |
207 |
< |
for (int i = 0; i < SIZE-1; ++i) |
208 |
< |
ints[i] = new Integer(i); |
209 |
< |
q.addAll(Arrays.asList(ints)); |
212 |
> |
q.addAll(elements); |
213 |
|
shouldThrow(); |
214 |
< |
} |
212 |
< |
catch (NullPointerException success) {} |
214 |
> |
} catch (NullPointerException success) {} |
215 |
|
} |
216 |
+ |
|
217 |
|
/** |
218 |
< |
* |
218 |
> |
* addAll throws IllegalStateException if not enough room |
219 |
|
*/ |
220 |
|
public void testAddAll4() { |
221 |
+ |
LinkedBlockingQueue<Item> q = new LinkedBlockingQueue<>(SIZE - 1); |
222 |
+ |
Item[] items = defaultItems; |
223 |
+ |
Collection<Item> elements = Arrays.asList(items); |
224 |
|
try { |
225 |
< |
LinkedBlockingQueue q = new LinkedBlockingQueue(1); |
220 |
< |
Integer[] ints = new Integer[SIZE]; |
221 |
< |
for (int i = 0; i < SIZE; ++i) |
222 |
< |
ints[i] = new Integer(i); |
223 |
< |
q.addAll(Arrays.asList(ints)); |
225 |
> |
q.addAll(elements); |
226 |
|
shouldThrow(); |
227 |
< |
} |
226 |
< |
catch (IllegalStateException success) {} |
227 |
> |
} catch (IllegalStateException success) {} |
228 |
|
} |
229 |
+ |
|
230 |
|
/** |
231 |
< |
* |
231 |
> |
* Queue contains all elements, in traversal order, of successful addAll |
232 |
|
*/ |
233 |
|
public void testAddAll5() { |
234 |
< |
try { |
235 |
< |
Integer[] empty = new Integer[0]; |
236 |
< |
Integer[] ints = new Integer[SIZE]; |
237 |
< |
for (int i = 0; i < SIZE; ++i) |
238 |
< |
ints[i] = new Integer(i); |
239 |
< |
LinkedBlockingQueue q = new LinkedBlockingQueue(SIZE); |
240 |
< |
assertFalse(q.addAll(Arrays.asList(empty))); |
239 |
< |
assertTrue(q.addAll(Arrays.asList(ints))); |
240 |
< |
for (int i = 0; i < SIZE; ++i) |
241 |
< |
assertEquals(ints[i], q.poll()); |
242 |
< |
} |
243 |
< |
finally {} |
244 |
< |
} |
245 |
< |
|
246 |
< |
/** |
247 |
< |
* |
248 |
< |
*/ |
249 |
< |
public void testPutNull() { |
250 |
< |
try { |
251 |
< |
LinkedBlockingQueue q = new LinkedBlockingQueue(SIZE); |
252 |
< |
q.put(null); |
253 |
< |
shouldThrow(); |
254 |
< |
} |
255 |
< |
catch (NullPointerException success){ |
256 |
< |
} |
257 |
< |
catch (InterruptedException ie) { |
258 |
< |
unexpectedException(); |
259 |
< |
} |
260 |
< |
} |
261 |
< |
|
262 |
< |
/** |
263 |
< |
* |
264 |
< |
*/ |
265 |
< |
public void testPut() { |
266 |
< |
try { |
267 |
< |
LinkedBlockingQueue q = new LinkedBlockingQueue(SIZE); |
268 |
< |
for (int i = 0; i < SIZE; ++i) { |
269 |
< |
Integer I = new Integer(i); |
270 |
< |
q.put(I); |
271 |
< |
assertTrue(q.contains(I)); |
272 |
< |
} |
273 |
< |
assertEquals(0, q.remainingCapacity()); |
274 |
< |
} |
275 |
< |
catch (InterruptedException ie) { |
276 |
< |
unexpectedException(); |
277 |
< |
} |
278 |
< |
} |
279 |
< |
|
280 |
< |
/** |
281 |
< |
* |
282 |
< |
*/ |
283 |
< |
public void testBlockingPut() { |
284 |
< |
Thread t = new Thread(new Runnable() { |
285 |
< |
public void run() { |
286 |
< |
int added = 0; |
287 |
< |
try { |
288 |
< |
LinkedBlockingQueue q = new LinkedBlockingQueue(SIZE); |
289 |
< |
for (int i = 0; i < SIZE; ++i) { |
290 |
< |
q.put(new Integer(i)); |
291 |
< |
++added; |
292 |
< |
} |
293 |
< |
q.put(new Integer(SIZE)); |
294 |
< |
threadShouldThrow(); |
295 |
< |
} catch (InterruptedException ie){ |
296 |
< |
threadAssertEquals(added, SIZE); |
297 |
< |
} |
298 |
< |
}}); |
299 |
< |
t.start(); |
300 |
< |
try { |
301 |
< |
Thread.sleep(SHORT_DELAY_MS); |
302 |
< |
t.interrupt(); |
303 |
< |
t.join(); |
304 |
< |
} |
305 |
< |
catch (InterruptedException ie) { |
306 |
< |
unexpectedException(); |
307 |
< |
} |
234 |
> |
Item[] empty = new Item[0]; |
235 |
> |
Item[] items = defaultItems; |
236 |
> |
LinkedBlockingQueue<Item> q = new LinkedBlockingQueue<>(SIZE); |
237 |
> |
assertFalse(q.addAll(Arrays.asList(empty))); |
238 |
> |
assertTrue(q.addAll(Arrays.asList(items))); |
239 |
> |
for (int i = 0; i < SIZE; ++i) |
240 |
> |
mustEqual(items[i], q.poll()); |
241 |
|
} |
242 |
|
|
243 |
|
/** |
244 |
< |
* |
245 |
< |
*/ |
246 |
< |
public void testPutWithTake() { |
247 |
< |
final LinkedBlockingQueue q = new LinkedBlockingQueue(2); |
248 |
< |
Thread t = new Thread(new Runnable() { |
249 |
< |
public void run() { |
250 |
< |
int added = 0; |
251 |
< |
try { |
319 |
< |
q.put(new Object()); |
320 |
< |
++added; |
321 |
< |
q.put(new Object()); |
322 |
< |
++added; |
323 |
< |
q.put(new Object()); |
324 |
< |
++added; |
325 |
< |
q.put(new Object()); |
326 |
< |
++added; |
327 |
< |
threadShouldThrow(); |
328 |
< |
} catch (InterruptedException e){ |
329 |
< |
threadAssertTrue(added >= 2); |
330 |
< |
} |
331 |
< |
} |
332 |
< |
}); |
333 |
< |
try { |
334 |
< |
t.start(); |
335 |
< |
Thread.sleep(SHORT_DELAY_MS); |
336 |
< |
q.take(); |
337 |
< |
t.interrupt(); |
338 |
< |
t.join(); |
339 |
< |
} catch (Exception e){ |
340 |
< |
unexpectedException(); |
244 |
> |
* all elements successfully put are contained |
245 |
> |
*/ |
246 |
> |
public void testPut() throws InterruptedException { |
247 |
> |
LinkedBlockingQueue<Item> q = new LinkedBlockingQueue<>(SIZE); |
248 |
> |
for (int i = 0; i < SIZE; ++i) { |
249 |
> |
Item x = itemFor(i); |
250 |
> |
q.put(x); |
251 |
> |
mustContain(q, x); |
252 |
|
} |
253 |
+ |
mustEqual(0, q.remainingCapacity()); |
254 |
|
} |
255 |
|
|
256 |
|
/** |
257 |
< |
* |
257 |
> |
* put blocks interruptibly if full |
258 |
|
*/ |
259 |
< |
public void testTimedOffer() { |
260 |
< |
final LinkedBlockingQueue q = new LinkedBlockingQueue(2); |
261 |
< |
Thread t = new Thread(new Runnable() { |
262 |
< |
public void run() { |
263 |
< |
try { |
264 |
< |
q.put(new Object()); |
265 |
< |
q.put(new Object()); |
266 |
< |
threadAssertFalse(q.offer(new Object(), SHORT_DELAY_MS, TimeUnit.MILLISECONDS)); |
267 |
< |
q.offer(new Object(), LONG_DELAY_MS, TimeUnit.MILLISECONDS); |
268 |
< |
threadShouldThrow(); |
269 |
< |
} catch (InterruptedException success){} |
270 |
< |
} |
271 |
< |
}); |
272 |
< |
|
273 |
< |
try { |
274 |
< |
t.start(); |
275 |
< |
Thread.sleep(SMALL_DELAY_MS); |
276 |
< |
t.interrupt(); |
277 |
< |
t.join(); |
278 |
< |
} catch (Exception e){ |
279 |
< |
unexpectedException(); |
280 |
< |
} |
259 |
> |
public void testBlockingPut() throws InterruptedException { |
260 |
> |
final LinkedBlockingQueue<Item> q = new LinkedBlockingQueue<>(SIZE); |
261 |
> |
final CountDownLatch pleaseInterrupt = new CountDownLatch(1); |
262 |
> |
Thread t = newStartedThread(new CheckedRunnable() { |
263 |
> |
public void realRun() throws InterruptedException { |
264 |
> |
for (int i = 0; i < SIZE; ++i) |
265 |
> |
q.put(itemFor(i)); |
266 |
> |
mustEqual(SIZE, q.size()); |
267 |
> |
mustEqual(0, q.remainingCapacity()); |
268 |
> |
|
269 |
> |
Thread.currentThread().interrupt(); |
270 |
> |
try { |
271 |
> |
q.put(ninetynine); |
272 |
> |
shouldThrow(); |
273 |
> |
} catch (InterruptedException success) {} |
274 |
> |
assertFalse(Thread.interrupted()); |
275 |
> |
|
276 |
> |
pleaseInterrupt.countDown(); |
277 |
> |
try { |
278 |
> |
q.put(ninetynine); |
279 |
> |
shouldThrow(); |
280 |
> |
} catch (InterruptedException success) {} |
281 |
> |
assertFalse(Thread.interrupted()); |
282 |
> |
}}); |
283 |
> |
|
284 |
> |
await(pleaseInterrupt); |
285 |
> |
if (randomBoolean()) assertThreadBlocks(t, Thread.State.WAITING); |
286 |
> |
t.interrupt(); |
287 |
> |
awaitTermination(t); |
288 |
> |
mustEqual(SIZE, q.size()); |
289 |
> |
mustEqual(0, q.remainingCapacity()); |
290 |
|
} |
291 |
|
|
292 |
|
/** |
293 |
< |
* |
294 |
< |
*/ |
295 |
< |
public void testTake() { |
296 |
< |
try { |
297 |
< |
LinkedBlockingQueue q = populatedQueue(SIZE); |
298 |
< |
for (int i = 0; i < SIZE; ++i) { |
299 |
< |
assertEquals(i, ((Integer)q.take()).intValue()); |
300 |
< |
} |
301 |
< |
} catch (InterruptedException e){ |
302 |
< |
unexpectedException(); |
303 |
< |
} |
293 |
> |
* put blocks interruptibly waiting for take when full |
294 |
> |
*/ |
295 |
> |
public void testPutWithTake() throws InterruptedException { |
296 |
> |
final int capacity = 2; |
297 |
> |
final LinkedBlockingQueue<Item> q = new LinkedBlockingQueue<>(2); |
298 |
> |
final CountDownLatch pleaseTake = new CountDownLatch(1); |
299 |
> |
final CountDownLatch pleaseInterrupt = new CountDownLatch(1); |
300 |
> |
Thread t = newStartedThread(new CheckedRunnable() { |
301 |
> |
public void realRun() throws InterruptedException { |
302 |
> |
for (int i = 0; i < capacity; i++) |
303 |
> |
q.put(itemFor(i)); |
304 |
> |
pleaseTake.countDown(); |
305 |
> |
q.put(eightysix); |
306 |
> |
|
307 |
> |
Thread.currentThread().interrupt(); |
308 |
> |
try { |
309 |
> |
q.put(ninetynine); |
310 |
> |
shouldThrow(); |
311 |
> |
} catch (InterruptedException success) {} |
312 |
> |
assertFalse(Thread.interrupted()); |
313 |
> |
|
314 |
> |
pleaseInterrupt.countDown(); |
315 |
> |
try { |
316 |
> |
q.put(ninetynine); |
317 |
> |
shouldThrow(); |
318 |
> |
} catch (InterruptedException success) {} |
319 |
> |
assertFalse(Thread.interrupted()); |
320 |
> |
}}); |
321 |
> |
|
322 |
> |
await(pleaseTake); |
323 |
> |
mustEqual(0, q.remainingCapacity()); |
324 |
> |
mustEqual(0, q.take()); |
325 |
> |
|
326 |
> |
await(pleaseInterrupt); |
327 |
> |
if (randomBoolean()) assertThreadBlocks(t, Thread.State.WAITING); |
328 |
> |
t.interrupt(); |
329 |
> |
awaitTermination(t); |
330 |
> |
mustEqual(0, q.remainingCapacity()); |
331 |
|
} |
332 |
|
|
333 |
|
/** |
334 |
< |
* |
335 |
< |
*/ |
336 |
< |
public void testTakeFromEmpty() { |
337 |
< |
final LinkedBlockingQueue q = new LinkedBlockingQueue(2); |
338 |
< |
Thread t = new Thread(new Runnable() { |
339 |
< |
public void run() { |
340 |
< |
try { |
341 |
< |
q.take(); |
342 |
< |
threadShouldThrow(); |
343 |
< |
} catch (InterruptedException success){ } |
344 |
< |
} |
345 |
< |
}); |
346 |
< |
try { |
347 |
< |
t.start(); |
348 |
< |
Thread.sleep(SHORT_DELAY_MS); |
349 |
< |
t.interrupt(); |
350 |
< |
t.join(); |
351 |
< |
} catch (Exception e){ |
352 |
< |
unexpectedException(); |
353 |
< |
} |
334 |
> |
* timed offer times out if full and elements not taken |
335 |
> |
*/ |
336 |
> |
public void testTimedOffer() { |
337 |
> |
final LinkedBlockingQueue<Item> q = new LinkedBlockingQueue<>(2); |
338 |
> |
final CountDownLatch pleaseInterrupt = new CountDownLatch(1); |
339 |
> |
Thread t = newStartedThread(new CheckedRunnable() { |
340 |
> |
public void realRun() throws InterruptedException { |
341 |
> |
q.put(zero); |
342 |
> |
q.put(one); |
343 |
> |
long startTime = System.nanoTime(); |
344 |
> |
|
345 |
> |
assertFalse(q.offer(two, timeoutMillis(), MILLISECONDS)); |
346 |
> |
assertTrue(millisElapsedSince(startTime) >= timeoutMillis()); |
347 |
> |
|
348 |
> |
Thread.currentThread().interrupt(); |
349 |
> |
try { |
350 |
> |
q.offer(three, randomTimeout(), randomTimeUnit()); |
351 |
> |
shouldThrow(); |
352 |
> |
} catch (InterruptedException success) {} |
353 |
> |
assertFalse(Thread.interrupted()); |
354 |
> |
|
355 |
> |
pleaseInterrupt.countDown(); |
356 |
> |
try { |
357 |
> |
q.offer(two, LONGER_DELAY_MS, MILLISECONDS); |
358 |
> |
shouldThrow(); |
359 |
> |
} catch (InterruptedException success) {} |
360 |
> |
assertFalse(Thread.interrupted()); |
361 |
> |
}}); |
362 |
> |
|
363 |
> |
await(pleaseInterrupt); |
364 |
> |
if (randomBoolean()) assertThreadBlocks(t, Thread.State.TIMED_WAITING); |
365 |
> |
t.interrupt(); |
366 |
> |
awaitTermination(t); |
367 |
|
} |
368 |
|
|
369 |
|
/** |
370 |
< |
* |
371 |
< |
*/ |
372 |
< |
public void testBlockingTake() { |
373 |
< |
Thread t = new Thread(new Runnable() { |
374 |
< |
public void run() { |
375 |
< |
try { |
415 |
< |
LinkedBlockingQueue q = populatedQueue(SIZE); |
416 |
< |
for (int i = 0; i < SIZE; ++i) { |
417 |
< |
assertEquals(i, ((Integer)q.take()).intValue()); |
418 |
< |
} |
419 |
< |
q.take(); |
420 |
< |
threadShouldThrow(); |
421 |
< |
} catch (InterruptedException success){ |
422 |
< |
} |
423 |
< |
}}); |
424 |
< |
t.start(); |
425 |
< |
try { |
426 |
< |
Thread.sleep(SHORT_DELAY_MS); |
427 |
< |
t.interrupt(); |
428 |
< |
t.join(); |
429 |
< |
} |
430 |
< |
catch (InterruptedException ie) { |
431 |
< |
unexpectedException(); |
370 |
> |
* take retrieves elements in FIFO order |
371 |
> |
*/ |
372 |
> |
public void testTake() throws InterruptedException { |
373 |
> |
LinkedBlockingQueue<Item> q = populatedQueue(SIZE); |
374 |
> |
for (int i = 0; i < SIZE; ++i) { |
375 |
> |
mustEqual(i, q.take()); |
376 |
|
} |
377 |
|
} |
378 |
|
|
379 |
+ |
/** |
380 |
+ |
* Take removes existing elements until empty, then blocks interruptibly |
381 |
+ |
*/ |
382 |
+ |
public void testBlockingTake() throws InterruptedException { |
383 |
+ |
final BlockingQueue<Item> q = populatedQueue(SIZE); |
384 |
+ |
final CountDownLatch pleaseInterrupt = new CountDownLatch(1); |
385 |
+ |
Thread t = newStartedThread(new CheckedRunnable() { |
386 |
+ |
public void realRun() throws InterruptedException { |
387 |
+ |
for (int i = 0; i < SIZE; i++) mustEqual(i, q.take()); |
388 |
+ |
|
389 |
+ |
Thread.currentThread().interrupt(); |
390 |
+ |
try { |
391 |
+ |
q.take(); |
392 |
+ |
shouldThrow(); |
393 |
+ |
} catch (InterruptedException success) {} |
394 |
+ |
assertFalse(Thread.interrupted()); |
395 |
+ |
|
396 |
+ |
pleaseInterrupt.countDown(); |
397 |
+ |
try { |
398 |
+ |
q.take(); |
399 |
+ |
shouldThrow(); |
400 |
+ |
} catch (InterruptedException success) {} |
401 |
+ |
assertFalse(Thread.interrupted()); |
402 |
+ |
}}); |
403 |
+ |
|
404 |
+ |
await(pleaseInterrupt); |
405 |
+ |
if (randomBoolean()) assertThreadBlocks(t, Thread.State.WAITING); |
406 |
+ |
t.interrupt(); |
407 |
+ |
awaitTermination(t); |
408 |
+ |
} |
409 |
|
|
410 |
|
/** |
411 |
< |
* |
411 |
> |
* poll succeeds unless empty |
412 |
|
*/ |
413 |
|
public void testPoll() { |
414 |
< |
LinkedBlockingQueue q = populatedQueue(SIZE); |
414 |
> |
LinkedBlockingQueue<Item> q = populatedQueue(SIZE); |
415 |
|
for (int i = 0; i < SIZE; ++i) { |
416 |
< |
assertEquals(i, ((Integer)q.poll()).intValue()); |
416 |
> |
mustEqual(i, q.poll()); |
417 |
|
} |
418 |
< |
assertNull(q.poll()); |
418 |
> |
assertNull(q.poll()); |
419 |
|
} |
420 |
|
|
421 |
|
/** |
422 |
< |
* |
422 |
> |
* timed poll with zero timeout succeeds when non-empty, else times out |
423 |
|
*/ |
424 |
< |
public void testTimedPoll0() { |
425 |
< |
try { |
426 |
< |
LinkedBlockingQueue q = populatedQueue(SIZE); |
427 |
< |
for (int i = 0; i < SIZE; ++i) { |
428 |
< |
assertEquals(i, ((Integer)q.poll(0, TimeUnit.MILLISECONDS)).intValue()); |
429 |
< |
} |
456 |
< |
assertNull(q.poll(0, TimeUnit.MILLISECONDS)); |
457 |
< |
} catch (InterruptedException e){ |
458 |
< |
unexpectedException(); |
459 |
< |
} |
424 |
> |
public void testTimedPoll0() throws InterruptedException { |
425 |
> |
LinkedBlockingQueue<Item> q = populatedQueue(SIZE); |
426 |
> |
for (int i = 0; i < SIZE; ++i) { |
427 |
> |
mustEqual(i, q.poll(0, MILLISECONDS)); |
428 |
> |
} |
429 |
> |
assertNull(q.poll(0, MILLISECONDS)); |
430 |
|
} |
431 |
|
|
432 |
|
/** |
433 |
< |
* |
433 |
> |
* timed poll with nonzero timeout succeeds when non-empty, else times out |
434 |
|
*/ |
435 |
< |
public void testTimedPoll() { |
436 |
< |
try { |
437 |
< |
LinkedBlockingQueue q = populatedQueue(SIZE); |
438 |
< |
for (int i = 0; i < SIZE; ++i) { |
439 |
< |
assertEquals(i, ((Integer)q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS)).intValue()); |
440 |
< |
} |
471 |
< |
assertNull(q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS)); |
472 |
< |
} catch (InterruptedException e){ |
473 |
< |
unexpectedException(); |
474 |
< |
} |
475 |
< |
} |
476 |
< |
|
477 |
< |
/** |
478 |
< |
* |
479 |
< |
*/ |
480 |
< |
public void testInterruptedTimedPoll() { |
481 |
< |
Thread t = new Thread(new Runnable() { |
482 |
< |
public void run() { |
483 |
< |
try { |
484 |
< |
LinkedBlockingQueue q = populatedQueue(SIZE); |
485 |
< |
for (int i = 0; i < SIZE; ++i) { |
486 |
< |
threadAssertEquals(i, ((Integer)q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS)).intValue()); |
487 |
< |
} |
488 |
< |
threadAssertNull(q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS)); |
489 |
< |
} catch (InterruptedException success){ |
490 |
< |
} |
491 |
< |
}}); |
492 |
< |
t.start(); |
493 |
< |
try { |
494 |
< |
Thread.sleep(SHORT_DELAY_MS); |
495 |
< |
t.interrupt(); |
496 |
< |
t.join(); |
497 |
< |
} |
498 |
< |
catch (InterruptedException ie) { |
499 |
< |
unexpectedException(); |
435 |
> |
public void testTimedPoll() throws InterruptedException { |
436 |
> |
LinkedBlockingQueue<Item> q = populatedQueue(SIZE); |
437 |
> |
for (int i = 0; i < SIZE; ++i) { |
438 |
> |
long startTime = System.nanoTime(); |
439 |
> |
mustEqual(i, q.poll(LONG_DELAY_MS, MILLISECONDS)); |
440 |
> |
assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS); |
441 |
|
} |
442 |
+ |
long startTime = System.nanoTime(); |
443 |
+ |
assertNull(q.poll(timeoutMillis(), MILLISECONDS)); |
444 |
+ |
assertTrue(millisElapsedSince(startTime) >= timeoutMillis()); |
445 |
+ |
checkEmpty(q); |
446 |
|
} |
447 |
|
|
448 |
|
/** |
449 |
< |
* |
449 |
> |
* Interrupted timed poll throws InterruptedException instead of |
450 |
> |
* returning timeout status |
451 |
|
*/ |
452 |
< |
public void testTimedPollWithOffer() { |
453 |
< |
final LinkedBlockingQueue q = new LinkedBlockingQueue(2); |
454 |
< |
Thread t = new Thread(new Runnable() { |
455 |
< |
public void run() { |
456 |
< |
try { |
457 |
< |
threadAssertNull(q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS)); |
458 |
< |
q.poll(LONG_DELAY_MS, TimeUnit.MILLISECONDS); |
459 |
< |
q.poll(LONG_DELAY_MS, TimeUnit.MILLISECONDS); |
460 |
< |
threadShouldThrow(); |
461 |
< |
} catch (InterruptedException success) { } |
462 |
< |
} |
463 |
< |
}); |
464 |
< |
try { |
465 |
< |
t.start(); |
520 |
< |
Thread.sleep(SMALL_DELAY_MS); |
521 |
< |
assertTrue(q.offer(zero, SHORT_DELAY_MS, TimeUnit.MILLISECONDS)); |
522 |
< |
t.interrupt(); |
523 |
< |
t.join(); |
524 |
< |
} catch (Exception e){ |
525 |
< |
unexpectedException(); |
526 |
< |
} |
527 |
< |
} |
452 |
> |
public void testInterruptedTimedPoll() throws InterruptedException { |
453 |
> |
final BlockingQueue<Item> q = populatedQueue(SIZE); |
454 |
> |
final CountDownLatch pleaseInterrupt = new CountDownLatch(1); |
455 |
> |
Thread t = newStartedThread(new CheckedRunnable() { |
456 |
> |
public void realRun() throws InterruptedException { |
457 |
> |
for (int i = 0; i < SIZE; i++) |
458 |
> |
mustEqual(i, q.poll(LONG_DELAY_MS, MILLISECONDS)); |
459 |
> |
|
460 |
> |
Thread.currentThread().interrupt(); |
461 |
> |
try { |
462 |
> |
q.poll(randomTimeout(), randomTimeUnit()); |
463 |
> |
shouldThrow(); |
464 |
> |
} catch (InterruptedException success) {} |
465 |
> |
assertFalse(Thread.interrupted()); |
466 |
|
|
467 |
+ |
pleaseInterrupt.countDown(); |
468 |
+ |
try { |
469 |
+ |
q.poll(LONGER_DELAY_MS, MILLISECONDS); |
470 |
+ |
shouldThrow(); |
471 |
+ |
} catch (InterruptedException success) {} |
472 |
+ |
assertFalse(Thread.interrupted()); |
473 |
+ |
}}); |
474 |
+ |
|
475 |
+ |
await(pleaseInterrupt); |
476 |
+ |
if (randomBoolean()) assertThreadBlocks(t, Thread.State.TIMED_WAITING); |
477 |
+ |
t.interrupt(); |
478 |
+ |
awaitTermination(t); |
479 |
+ |
checkEmpty(q); |
480 |
+ |
} |
481 |
|
|
482 |
|
/** |
483 |
< |
* |
483 |
> |
* peek returns next element, or null if empty |
484 |
|
*/ |
485 |
|
public void testPeek() { |
486 |
< |
LinkedBlockingQueue q = populatedQueue(SIZE); |
486 |
> |
LinkedBlockingQueue<Item> q = populatedQueue(SIZE); |
487 |
|
for (int i = 0; i < SIZE; ++i) { |
488 |
< |
assertEquals(i, ((Integer)q.peek()).intValue()); |
489 |
< |
q.poll(); |
488 |
> |
mustEqual(i, q.peek()); |
489 |
> |
mustEqual(i, q.poll()); |
490 |
|
assertTrue(q.peek() == null || |
491 |
< |
i != ((Integer)q.peek()).intValue()); |
491 |
> |
!q.peek().equals(i)); |
492 |
|
} |
493 |
< |
assertNull(q.peek()); |
493 |
> |
assertNull(q.peek()); |
494 |
|
} |
495 |
|
|
496 |
|
/** |
497 |
< |
* |
497 |
> |
* element returns next element, or throws NSEE if empty |
498 |
|
*/ |
499 |
|
public void testElement() { |
500 |
< |
LinkedBlockingQueue q = populatedQueue(SIZE); |
500 |
> |
LinkedBlockingQueue<Item> q = populatedQueue(SIZE); |
501 |
|
for (int i = 0; i < SIZE; ++i) { |
502 |
< |
assertEquals(i, ((Integer)q.element()).intValue()); |
503 |
< |
q.poll(); |
502 |
> |
mustEqual(i, q.element()); |
503 |
> |
mustEqual(i, q.poll()); |
504 |
|
} |
505 |
|
try { |
506 |
|
q.element(); |
507 |
|
shouldThrow(); |
508 |
< |
} |
557 |
< |
catch (NoSuchElementException success) {} |
508 |
> |
} catch (NoSuchElementException success) {} |
509 |
|
} |
510 |
|
|
511 |
|
/** |
512 |
< |
* |
512 |
> |
* remove removes next element, or throws NSEE if empty |
513 |
|
*/ |
514 |
|
public void testRemove() { |
515 |
< |
LinkedBlockingQueue q = populatedQueue(SIZE); |
515 |
> |
LinkedBlockingQueue<Item> q = populatedQueue(SIZE); |
516 |
|
for (int i = 0; i < SIZE; ++i) { |
517 |
< |
assertEquals(i, ((Integer)q.remove()).intValue()); |
517 |
> |
mustEqual(i, q.remove()); |
518 |
|
} |
519 |
|
try { |
520 |
|
q.remove(); |
521 |
|
shouldThrow(); |
522 |
< |
} catch (NoSuchElementException success){ |
572 |
< |
} |
522 |
> |
} catch (NoSuchElementException success) {} |
523 |
|
} |
524 |
|
|
525 |
|
/** |
526 |
< |
* |
526 |
> |
* An add following remove(x) succeeds |
527 |
|
*/ |
528 |
< |
public void testRemoveElement() { |
529 |
< |
LinkedBlockingQueue q = populatedQueue(SIZE); |
530 |
< |
for (int i = 1; i < SIZE; i+=2) { |
531 |
< |
assertTrue(q.remove(new Integer(i))); |
532 |
< |
} |
533 |
< |
for (int i = 0; i < SIZE; i+=2) { |
534 |
< |
assertTrue(q.remove(new Integer(i))); |
535 |
< |
assertFalse(q.remove(new Integer(i+1))); |
586 |
< |
} |
587 |
< |
assertTrue(q.isEmpty()); |
528 |
> |
public void testRemoveElementAndAdd() throws InterruptedException { |
529 |
> |
LinkedBlockingQueue<Item> q = new LinkedBlockingQueue<>(); |
530 |
> |
assertTrue(q.add(one)); |
531 |
> |
assertTrue(q.add(two)); |
532 |
> |
mustRemove(q, one); |
533 |
> |
mustRemove(q, two); |
534 |
> |
mustAdd(q, three); |
535 |
> |
assertNotNull(q.take()); |
536 |
|
} |
537 |
< |
|
537 |
> |
|
538 |
|
/** |
539 |
< |
* |
539 |
> |
* contains(x) reports true when elements added but not yet removed |
540 |
|
*/ |
541 |
|
public void testContains() { |
542 |
< |
LinkedBlockingQueue q = populatedQueue(SIZE); |
542 |
> |
LinkedBlockingQueue<Item> q = populatedQueue(SIZE); |
543 |
|
for (int i = 0; i < SIZE; ++i) { |
544 |
< |
assertTrue(q.contains(new Integer(i))); |
544 |
> |
mustContain(q, i); |
545 |
|
q.poll(); |
546 |
< |
assertFalse(q.contains(new Integer(i))); |
546 |
> |
mustNotContain(q, i); |
547 |
|
} |
548 |
|
} |
549 |
|
|
550 |
|
/** |
551 |
< |
* |
551 |
> |
* clear removes all elements |
552 |
|
*/ |
553 |
|
public void testClear() { |
554 |
< |
LinkedBlockingQueue q = populatedQueue(SIZE); |
554 |
> |
LinkedBlockingQueue<Item> q = populatedQueue(SIZE); |
555 |
|
q.clear(); |
556 |
|
assertTrue(q.isEmpty()); |
557 |
< |
assertEquals(0, q.size()); |
558 |
< |
assertEquals(SIZE, q.remainingCapacity()); |
557 |
> |
mustEqual(0, q.size()); |
558 |
> |
mustEqual(SIZE, q.remainingCapacity()); |
559 |
|
q.add(one); |
560 |
|
assertFalse(q.isEmpty()); |
561 |
+ |
assertTrue(q.contains(one)); |
562 |
|
q.clear(); |
563 |
|
assertTrue(q.isEmpty()); |
564 |
|
} |
565 |
|
|
566 |
|
/** |
567 |
< |
* |
567 |
> |
* containsAll(c) is true when c contains a subset of elements |
568 |
|
*/ |
569 |
|
public void testContainsAll() { |
570 |
< |
LinkedBlockingQueue q = populatedQueue(SIZE); |
571 |
< |
LinkedBlockingQueue p = new LinkedBlockingQueue(SIZE); |
570 |
> |
LinkedBlockingQueue<Item> q = populatedQueue(SIZE); |
571 |
> |
LinkedBlockingQueue<Item> p = new LinkedBlockingQueue<>(SIZE); |
572 |
|
for (int i = 0; i < SIZE; ++i) { |
573 |
|
assertTrue(q.containsAll(p)); |
574 |
|
assertFalse(p.containsAll(q)); |
575 |
< |
p.add(new Integer(i)); |
575 |
> |
mustAdd(p, i); |
576 |
|
} |
577 |
|
assertTrue(p.containsAll(q)); |
578 |
|
} |
579 |
|
|
580 |
|
/** |
581 |
< |
* |
581 |
> |
* retainAll(c) retains only those elements of c and reports true if changed |
582 |
|
*/ |
583 |
|
public void testRetainAll() { |
584 |
< |
LinkedBlockingQueue q = populatedQueue(SIZE); |
585 |
< |
LinkedBlockingQueue p = populatedQueue(SIZE); |
584 |
> |
LinkedBlockingQueue<Item> q = populatedQueue(SIZE); |
585 |
> |
LinkedBlockingQueue<Item> p = populatedQueue(SIZE); |
586 |
|
for (int i = 0; i < SIZE; ++i) { |
587 |
|
boolean changed = q.retainAll(p); |
588 |
|
if (i == 0) |
591 |
|
assertTrue(changed); |
592 |
|
|
593 |
|
assertTrue(q.containsAll(p)); |
594 |
< |
assertEquals(SIZE-i, q.size()); |
594 |
> |
mustEqual(SIZE - i, q.size()); |
595 |
|
p.remove(); |
596 |
|
} |
597 |
|
} |
598 |
|
|
599 |
|
/** |
600 |
< |
* |
600 |
> |
* removeAll(c) removes only those elements of c and reports true if changed |
601 |
|
*/ |
602 |
|
public void testRemoveAll() { |
603 |
|
for (int i = 1; i < SIZE; ++i) { |
604 |
< |
LinkedBlockingQueue q = populatedQueue(SIZE); |
605 |
< |
LinkedBlockingQueue p = populatedQueue(i); |
604 |
> |
LinkedBlockingQueue<Item> q = populatedQueue(SIZE); |
605 |
> |
LinkedBlockingQueue<Item> p = populatedQueue(i); |
606 |
|
assertTrue(q.removeAll(p)); |
607 |
< |
assertEquals(SIZE-i, q.size()); |
607 |
> |
mustEqual(SIZE - i, q.size()); |
608 |
|
for (int j = 0; j < i; ++j) { |
609 |
< |
Integer I = (Integer)(p.remove()); |
661 |
< |
assertFalse(q.contains(I)); |
609 |
> |
mustNotContain(q, p.remove()); |
610 |
|
} |
611 |
|
} |
612 |
|
} |
613 |
|
|
666 |
– |
|
614 |
|
/** |
615 |
< |
* |
615 |
> |
* toArray contains all elements in FIFO order |
616 |
|
*/ |
617 |
|
public void testToArray() { |
618 |
< |
LinkedBlockingQueue q = populatedQueue(SIZE); |
619 |
< |
Object[] o = q.toArray(); |
620 |
< |
try { |
621 |
< |
for(int i = 0; i < o.length; i++) |
622 |
< |
assertEquals(o[i], q.take()); |
623 |
< |
} catch (InterruptedException e){ |
677 |
< |
unexpectedException(); |
678 |
< |
} |
618 |
> |
LinkedBlockingQueue<Item> q = populatedQueue(SIZE); |
619 |
> |
Object[] a = q.toArray(); |
620 |
> |
assertSame(Object[].class, a.getClass()); |
621 |
> |
for (Object o : a) |
622 |
> |
assertSame(o, q.poll()); |
623 |
> |
assertTrue(q.isEmpty()); |
624 |
|
} |
625 |
|
|
626 |
|
/** |
627 |
< |
* |
628 |
< |
*/ |
629 |
< |
public void testToArray2() { |
630 |
< |
LinkedBlockingQueue q = populatedQueue(SIZE); |
631 |
< |
Integer[] ints = new Integer[SIZE]; |
632 |
< |
ints = (Integer[])q.toArray(ints); |
633 |
< |
try { |
634 |
< |
for(int i = 0; i < ints.length; i++) |
635 |
< |
assertEquals(ints[i], q.take()); |
636 |
< |
} catch (InterruptedException e){ |
692 |
< |
unexpectedException(); |
693 |
< |
} |
694 |
< |
} |
695 |
< |
|
696 |
< |
/** |
697 |
< |
* |
698 |
< |
*/ |
699 |
< |
public void testIterator() { |
700 |
< |
LinkedBlockingQueue q = populatedQueue(SIZE); |
701 |
< |
Iterator it = q.iterator(); |
702 |
< |
try { |
703 |
< |
while(it.hasNext()){ |
704 |
< |
assertEquals(it.next(), q.take()); |
705 |
< |
} |
706 |
< |
} catch (InterruptedException e){ |
707 |
< |
unexpectedException(); |
708 |
< |
} |
627 |
> |
* toArray(a) contains all elements in FIFO order |
628 |
> |
*/ |
629 |
> |
public void testToArray2() throws InterruptedException { |
630 |
> |
LinkedBlockingQueue<Item> q = populatedQueue(SIZE); |
631 |
> |
Item[] items = new Item[SIZE]; |
632 |
> |
Item[] array = q.toArray(items); |
633 |
> |
assertSame(items, array); |
634 |
> |
for (Item o : items) |
635 |
> |
assertSame(o, q.poll()); |
636 |
> |
assertTrue(q.isEmpty()); |
637 |
|
} |
638 |
|
|
639 |
|
/** |
640 |
< |
* |
640 |
> |
* toArray(incompatible array type) throws ArrayStoreException |
641 |
|
*/ |
642 |
< |
public void testIteratorOrdering() { |
642 |
> |
@SuppressWarnings("CollectionToArraySafeParameter") |
643 |
> |
public void testToArray_incompatibleArrayType() { |
644 |
> |
LinkedBlockingQueue<Item> q = populatedQueue(SIZE); |
645 |
> |
try { |
646 |
> |
q.toArray(new String[10]); |
647 |
> |
shouldThrow(); |
648 |
> |
} catch (ArrayStoreException success) {} |
649 |
> |
} |
650 |
> |
|
651 |
> |
/** |
652 |
> |
* iterator iterates through all elements |
653 |
> |
*/ |
654 |
> |
public void testIterator() throws InterruptedException { |
655 |
> |
LinkedBlockingQueue<Item> q = populatedQueue(SIZE); |
656 |
> |
Iterator<? extends Item> it = q.iterator(); |
657 |
> |
int i; |
658 |
> |
for (i = 0; it.hasNext(); i++) |
659 |
> |
mustContain(q, it.next()); |
660 |
> |
mustEqual(i, SIZE); |
661 |
> |
assertIteratorExhausted(it); |
662 |
|
|
663 |
< |
final LinkedBlockingQueue q = new LinkedBlockingQueue(3); |
663 |
> |
it = q.iterator(); |
664 |
> |
for (i = 0; it.hasNext(); i++) |
665 |
> |
mustEqual(it.next(), q.take()); |
666 |
> |
mustEqual(i, SIZE); |
667 |
> |
assertIteratorExhausted(it); |
668 |
> |
} |
669 |
|
|
670 |
< |
q.add(one); |
670 |
> |
/** |
671 |
> |
* iterator of empty collection has no elements |
672 |
> |
*/ |
673 |
> |
public void testEmptyIterator() { |
674 |
> |
assertIteratorExhausted(new LinkedBlockingQueue<Item>().iterator()); |
675 |
> |
} |
676 |
> |
|
677 |
> |
/** |
678 |
> |
* iterator.remove removes current element |
679 |
> |
*/ |
680 |
> |
public void testIteratorRemove() { |
681 |
> |
final LinkedBlockingQueue<Item> q = new LinkedBlockingQueue<>(3); |
682 |
|
q.add(two); |
683 |
+ |
q.add(one); |
684 |
|
q.add(three); |
685 |
|
|
686 |
< |
assertEquals(0, q.remainingCapacity()); |
686 |
> |
Iterator<? extends Item> it = q.iterator(); |
687 |
> |
it.next(); |
688 |
> |
it.remove(); |
689 |
> |
|
690 |
> |
it = q.iterator(); |
691 |
> |
assertSame(it.next(), one); |
692 |
> |
assertSame(it.next(), three); |
693 |
> |
assertFalse(it.hasNext()); |
694 |
> |
} |
695 |
|
|
696 |
+ |
/** |
697 |
+ |
* iterator ordering is FIFO |
698 |
+ |
*/ |
699 |
+ |
public void testIteratorOrdering() { |
700 |
+ |
final LinkedBlockingQueue<Item> q = new LinkedBlockingQueue<>(3); |
701 |
+ |
q.add(one); |
702 |
+ |
q.add(two); |
703 |
+ |
q.add(three); |
704 |
+ |
mustEqual(0, q.remainingCapacity()); |
705 |
|
int k = 0; |
706 |
< |
for (Iterator it = q.iterator(); it.hasNext();) { |
707 |
< |
int i = ((Integer)(it.next())).intValue(); |
727 |
< |
assertEquals(++k, i); |
706 |
> |
for (Iterator<? extends Item> it = q.iterator(); it.hasNext();) { |
707 |
> |
mustEqual(++k, it.next()); |
708 |
|
} |
709 |
< |
|
730 |
< |
assertEquals(3, k); |
709 |
> |
mustEqual(3, k); |
710 |
|
} |
711 |
|
|
712 |
|
/** |
713 |
< |
* |
713 |
> |
* Modifications do not cause iterators to fail |
714 |
|
*/ |
715 |
< |
public void testWeaklyConsistentIteration () { |
716 |
< |
|
738 |
< |
final LinkedBlockingQueue q = new LinkedBlockingQueue(3); |
739 |
< |
|
715 |
> |
public void testWeaklyConsistentIteration() { |
716 |
> |
final LinkedBlockingQueue<Item> q = new LinkedBlockingQueue<>(3); |
717 |
|
q.add(one); |
718 |
|
q.add(two); |
719 |
|
q.add(three); |
720 |
< |
|
721 |
< |
try { |
722 |
< |
for (Iterator it = q.iterator(); it.hasNext();) { |
746 |
< |
q.remove(); |
747 |
< |
it.next(); |
748 |
< |
} |
749 |
< |
} |
750 |
< |
catch (ConcurrentModificationException e) { |
751 |
< |
unexpectedException(); |
720 |
> |
for (Iterator<? extends Item> it = q.iterator(); it.hasNext();) { |
721 |
> |
q.remove(); |
722 |
> |
it.next(); |
723 |
|
} |
724 |
< |
|
754 |
< |
assertEquals(0, q.size()); |
724 |
> |
mustEqual(0, q.size()); |
725 |
|
} |
726 |
|
|
757 |
– |
|
727 |
|
/** |
728 |
< |
* |
728 |
> |
* toString contains toStrings of elements |
729 |
|
*/ |
730 |
|
public void testToString() { |
731 |
< |
LinkedBlockingQueue q = populatedQueue(SIZE); |
731 |
> |
LinkedBlockingQueue<Item> q = populatedQueue(SIZE); |
732 |
|
String s = q.toString(); |
733 |
|
for (int i = 0; i < SIZE; ++i) { |
734 |
< |
assertTrue(s.indexOf(String.valueOf(i)) >= 0); |
734 |
> |
assertTrue(s.contains(String.valueOf(i))); |
735 |
|
} |
736 |
< |
} |
768 |
< |
|
736 |
> |
} |
737 |
|
|
738 |
|
/** |
739 |
< |
* |
739 |
> |
* offer transfers elements across Executor tasks |
740 |
|
*/ |
741 |
|
public void testOfferInExecutor() { |
742 |
< |
|
775 |
< |
final LinkedBlockingQueue q = new LinkedBlockingQueue(2); |
776 |
< |
|
742 |
> |
final LinkedBlockingQueue<Item> q = new LinkedBlockingQueue<>(2); |
743 |
|
q.add(one); |
744 |
|
q.add(two); |
745 |
+ |
final CheckedBarrier threadsStarted = new CheckedBarrier(2); |
746 |
+ |
final ExecutorService executor = Executors.newFixedThreadPool(2); |
747 |
+ |
try (PoolCleaner cleaner = cleaner(executor)) { |
748 |
+ |
executor.execute(new CheckedRunnable() { |
749 |
+ |
public void realRun() throws InterruptedException { |
750 |
+ |
assertFalse(q.offer(three)); |
751 |
+ |
threadsStarted.await(); |
752 |
+ |
assertTrue(q.offer(three, LONG_DELAY_MS, MILLISECONDS)); |
753 |
+ |
mustEqual(0, q.remainingCapacity()); |
754 |
+ |
}}); |
755 |
|
|
756 |
< |
ExecutorService executor = Executors.newFixedThreadPool(2); |
757 |
< |
|
758 |
< |
executor.execute(new Runnable() { |
759 |
< |
public void run() { |
760 |
< |
threadAssertFalse(q.offer(three)); |
761 |
< |
try { |
786 |
< |
threadAssertTrue(q.offer(three, MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS)); |
787 |
< |
threadAssertEquals(0, q.remainingCapacity()); |
788 |
< |
} |
789 |
< |
catch (InterruptedException e) { |
790 |
< |
threadUnexpectedException(); |
791 |
< |
} |
792 |
< |
} |
793 |
< |
}); |
794 |
< |
|
795 |
< |
executor.execute(new Runnable() { |
796 |
< |
public void run() { |
797 |
< |
try { |
798 |
< |
Thread.sleep(SMALL_DELAY_MS); |
799 |
< |
threadAssertEquals(one, q.take()); |
800 |
< |
} |
801 |
< |
catch (InterruptedException e) { |
802 |
< |
threadUnexpectedException(); |
803 |
< |
} |
804 |
< |
} |
805 |
< |
}); |
806 |
< |
|
807 |
< |
joinPool(executor); |
808 |
< |
|
756 |
> |
executor.execute(new CheckedRunnable() { |
757 |
> |
public void realRun() throws InterruptedException { |
758 |
> |
threadsStarted.await(); |
759 |
> |
assertSame(one, q.take()); |
760 |
> |
}}); |
761 |
> |
} |
762 |
|
} |
763 |
|
|
764 |
|
/** |
765 |
< |
* |
765 |
> |
* timed poll retrieves elements across Executor threads |
766 |
|
*/ |
767 |
|
public void testPollInExecutor() { |
768 |
+ |
final LinkedBlockingQueue<Item> q = new LinkedBlockingQueue<>(2); |
769 |
+ |
final CheckedBarrier threadsStarted = new CheckedBarrier(2); |
770 |
+ |
final ExecutorService executor = Executors.newFixedThreadPool(2); |
771 |
+ |
try (PoolCleaner cleaner = cleaner(executor)) { |
772 |
+ |
executor.execute(new CheckedRunnable() { |
773 |
+ |
public void realRun() throws InterruptedException { |
774 |
+ |
assertNull(q.poll()); |
775 |
+ |
threadsStarted.await(); |
776 |
+ |
assertSame(one, q.poll(LONG_DELAY_MS, MILLISECONDS)); |
777 |
+ |
checkEmpty(q); |
778 |
+ |
}}); |
779 |
|
|
780 |
< |
final LinkedBlockingQueue q = new LinkedBlockingQueue(2); |
781 |
< |
|
782 |
< |
ExecutorService executor = Executors.newFixedThreadPool(2); |
819 |
< |
|
820 |
< |
executor.execute(new Runnable() { |
821 |
< |
public void run() { |
822 |
< |
threadAssertNull(q.poll()); |
823 |
< |
try { |
824 |
< |
threadAssertTrue(null != q.poll(MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS)); |
825 |
< |
threadAssertTrue(q.isEmpty()); |
826 |
< |
} |
827 |
< |
catch (InterruptedException e) { |
828 |
< |
threadUnexpectedException(); |
829 |
< |
} |
830 |
< |
} |
831 |
< |
}); |
832 |
< |
|
833 |
< |
executor.execute(new Runnable() { |
834 |
< |
public void run() { |
835 |
< |
try { |
836 |
< |
Thread.sleep(SMALL_DELAY_MS); |
780 |
> |
executor.execute(new CheckedRunnable() { |
781 |
> |
public void realRun() throws InterruptedException { |
782 |
> |
threadsStarted.await(); |
783 |
|
q.put(one); |
784 |
< |
} |
785 |
< |
catch (InterruptedException e) { |
840 |
< |
threadUnexpectedException(); |
841 |
< |
} |
842 |
< |
} |
843 |
< |
}); |
844 |
< |
|
845 |
< |
joinPool(executor); |
784 |
> |
}}); |
785 |
> |
} |
786 |
|
} |
787 |
|
|
788 |
|
/** |
789 |
< |
* |
789 |
> |
* A deserialized/reserialized queue has same elements in same order |
790 |
|
*/ |
791 |
< |
public void testSerialization() { |
792 |
< |
LinkedBlockingQueue q = populatedQueue(SIZE); |
791 |
> |
public void testSerialization() throws Exception { |
792 |
> |
Queue<Item> x = populatedQueue(SIZE); |
793 |
> |
Queue<Item> y = serialClone(x); |
794 |
> |
|
795 |
> |
assertNotSame(x, y); |
796 |
> |
mustEqual(x.size(), y.size()); |
797 |
> |
mustEqual(x.toString(), y.toString()); |
798 |
> |
assertTrue(Arrays.equals(x.toArray(), y.toArray())); |
799 |
> |
while (!x.isEmpty()) { |
800 |
> |
assertFalse(y.isEmpty()); |
801 |
> |
mustEqual(x.remove(), y.remove()); |
802 |
> |
} |
803 |
> |
assertTrue(y.isEmpty()); |
804 |
> |
} |
805 |
|
|
806 |
< |
try { |
807 |
< |
ByteArrayOutputStream bout = new ByteArrayOutputStream(10000); |
808 |
< |
ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout)); |
809 |
< |
out.writeObject(q); |
810 |
< |
out.close(); |
806 |
> |
/** |
807 |
> |
* drainTo(c) empties queue into another collection c |
808 |
> |
*/ |
809 |
> |
public void testDrainTo() { |
810 |
> |
LinkedBlockingQueue<Item> q = populatedQueue(SIZE); |
811 |
> |
ArrayList<Item> l = new ArrayList<>(); |
812 |
> |
q.drainTo(l); |
813 |
> |
mustEqual(0, q.size()); |
814 |
> |
mustEqual(SIZE, l.size()); |
815 |
> |
for (int i = 0; i < SIZE; ++i) |
816 |
> |
mustEqual(l.get(i), i); |
817 |
> |
q.add(zero); |
818 |
> |
q.add(one); |
819 |
> |
assertFalse(q.isEmpty()); |
820 |
> |
mustContain(q, zero); |
821 |
> |
mustContain(q, one); |
822 |
> |
l.clear(); |
823 |
> |
q.drainTo(l); |
824 |
> |
mustEqual(0, q.size()); |
825 |
> |
mustEqual(2, l.size()); |
826 |
> |
for (int i = 0; i < 2; ++i) |
827 |
> |
mustEqual(l.get(i), i); |
828 |
> |
} |
829 |
> |
|
830 |
> |
/** |
831 |
> |
* drainTo empties full queue, unblocking a waiting put. |
832 |
> |
*/ |
833 |
> |
public void testDrainToWithActivePut() throws InterruptedException { |
834 |
> |
final LinkedBlockingQueue<Item> q = populatedQueue(SIZE); |
835 |
> |
Thread t = new Thread(new CheckedRunnable() { |
836 |
> |
public void realRun() throws InterruptedException { |
837 |
> |
q.put(new Item(SIZE + 1)); |
838 |
> |
}}); |
839 |
> |
|
840 |
> |
t.start(); |
841 |
> |
ArrayList<Item> l = new ArrayList<>(); |
842 |
> |
q.drainTo(l); |
843 |
> |
assertTrue(l.size() >= SIZE); |
844 |
> |
for (int i = 0; i < SIZE; ++i) |
845 |
> |
mustEqual(l.get(i), i); |
846 |
> |
t.join(); |
847 |
> |
assertTrue(q.size() + l.size() >= SIZE); |
848 |
> |
} |
849 |
|
|
850 |
< |
ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray()); |
851 |
< |
ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin)); |
852 |
< |
LinkedBlockingQueue r = (LinkedBlockingQueue)in.readObject(); |
853 |
< |
assertEquals(q.size(), r.size()); |
854 |
< |
while (!q.isEmpty()) |
855 |
< |
assertEquals(q.remove(), r.remove()); |
856 |
< |
} catch(Exception e){ |
857 |
< |
unexpectedException(); |
850 |
> |
/** |
851 |
> |
* drainTo(c, n) empties first min(n, size) elements of queue into c |
852 |
> |
*/ |
853 |
> |
public void testDrainToN() { |
854 |
> |
LinkedBlockingQueue<Item> q = new LinkedBlockingQueue<>(); |
855 |
> |
for (int i = 0; i < SIZE + 2; ++i) { |
856 |
> |
for (int j = 0; j < SIZE; j++) |
857 |
> |
mustOffer(q, j); |
858 |
> |
ArrayList<Item> l = new ArrayList<>(); |
859 |
> |
q.drainTo(l, i); |
860 |
> |
int k = (i < SIZE) ? i : SIZE; |
861 |
> |
mustEqual(k, l.size()); |
862 |
> |
mustEqual(SIZE - k, q.size()); |
863 |
> |
for (int j = 0; j < k; ++j) |
864 |
> |
mustEqual(l.get(j), j); |
865 |
> |
do {} while (q.poll() != null); |
866 |
> |
} |
867 |
> |
} |
868 |
> |
|
869 |
> |
/** |
870 |
> |
* remove(null), contains(null) always return false |
871 |
> |
*/ |
872 |
> |
public void testNeverContainsNull() { |
873 |
> |
Collection<?>[] qs = { |
874 |
> |
new LinkedBlockingQueue<>(), |
875 |
> |
populatedQueue(2), |
876 |
> |
}; |
877 |
> |
|
878 |
> |
for (Collection<?> q : qs) { |
879 |
> |
assertFalse(q.contains(null)); |
880 |
> |
assertFalse(q.remove(null)); |
881 |
|
} |
882 |
|
} |
883 |
|
|