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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 John Vint |
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*/ |
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|
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import java.io.BufferedInputStream; |
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import java.io.BufferedOutputStream; |
10 |
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import java.io.ByteArrayInputStream; |
11 |
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import java.io.ByteArrayOutputStream; |
12 |
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import java.io.ObjectInputStream; |
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import java.io.ObjectOutputStream; |
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import static java.util.concurrent.TimeUnit.MILLISECONDS; |
9 |
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|
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import java.util.ArrayList; |
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import java.util.Arrays; |
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import java.util.Collection; |
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import java.util.Iterator; |
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import java.util.List; |
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import java.util.NoSuchElementException; |
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import java.util.concurrent.*; |
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import static java.util.concurrent.TimeUnit.MILLISECONDS; |
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import static java.util.concurrent.TimeUnit.NANOSECONDS; |
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.LinkedTransferQueue; |
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|
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import junit.framework.Test; |
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import junit.framework.TestSuite; |
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|
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@SuppressWarnings({"unchecked", "rawtypes"}) |
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public class LinkedTransferQueueTest extends JSR166TestCase { |
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|
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public static class Generic extends BlockingQueueTest { |
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protected BlockingQueue emptyCollection() { |
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return new LinkedTransferQueue(); |
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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 newTestSuite(LinkedTransferQueueTest.class, |
39 |
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new Generic().testSuite()); |
40 |
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} |
41 |
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|
42 |
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void checkEmpty(BlockingQueue q) { |
43 |
< |
try { |
45 |
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assertTrue(q.isEmpty()); |
46 |
< |
assertEquals(0, q.size()); |
47 |
< |
assertNull(q.peek()); |
48 |
< |
assertNull(q.poll()); |
49 |
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assertNull(q.poll(0, MILLISECONDS)); |
50 |
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assertEquals(q.toString(), "[]"); |
51 |
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assertTrue(Arrays.equals(q.toArray(), new Object[0])); |
52 |
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assertFalse(q.iterator().hasNext()); |
53 |
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try { |
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q.element(); |
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shouldThrow(); |
56 |
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} catch (NoSuchElementException success) {} |
57 |
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try { |
58 |
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q.iterator().next(); |
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shouldThrow(); |
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} catch (NoSuchElementException success) {} |
61 |
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try { |
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q.remove(); |
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shouldThrow(); |
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} catch (NoSuchElementException success) {} |
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} catch (InterruptedException ie) { |
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threadUnexpectedException(ie); |
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class Implementation implements CollectionImplementation { |
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public Class<?> klazz() { return LinkedTransferQueue.class; } |
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public Collection emptyCollection() { return new LinkedTransferQueue(); } |
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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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return newTestSuite(LinkedTransferQueueTest.class, |
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new Generic().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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* NullPointerException |
73 |
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*/ |
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public void testConstructor3() { |
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Collection<Integer> elements = Arrays.asList(new Integer[SIZE]); |
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try { |
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Integer[] ints = new Integer[SIZE]; |
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new LinkedTransferQueue(Arrays.asList(ints)); |
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new LinkedTransferQueue(elements); |
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shouldThrow(); |
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} catch (NullPointerException success) {} |
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} |
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* throws NullPointerException |
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*/ |
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public void testConstructor4() { |
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Integer[] ints = new Integer[SIZE]; |
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for (int i = 0; i < SIZE - 1; ++i) |
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ints[i] = i; |
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Collection<Integer> elements = Arrays.asList(ints); |
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try { |
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Integer[] ints = new Integer[SIZE]; |
109 |
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for (int i = 0; i < SIZE - 1; ++i) { |
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ints[i] = i; |
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} |
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new LinkedTransferQueue(Arrays.asList(ints)); |
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new LinkedTransferQueue(elements); |
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shouldThrow(); |
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} catch (NullPointerException success) {} |
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} |
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* remainingCapacity() always returns Integer.MAX_VALUE |
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*/ |
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public void testRemainingCapacity() { |
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LinkedTransferQueue<Integer> q = populatedQueue(SIZE); |
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BlockingQueue q = populatedQueue(SIZE); |
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for (int i = 0; i < SIZE; ++i) { |
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assertEquals(Integer.MAX_VALUE, q.remainingCapacity()); |
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assertEquals(SIZE - i, q.size()); |
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q.remove(); |
129 |
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assertEquals(i, q.remove()); |
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} |
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for (int i = 0; i < SIZE; ++i) { |
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assertEquals(Integer.MAX_VALUE, q.remainingCapacity()); |
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assertEquals(i, q.size()); |
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q.add(i); |
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assertTrue(q.add(i)); |
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} |
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} |
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|
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/** |
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* offer(null) throws NullPointerException |
160 |
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*/ |
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public void testOfferNull() { |
162 |
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try { |
163 |
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LinkedTransferQueue q = new LinkedTransferQueue(); |
164 |
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q.offer(null); |
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shouldThrow(); |
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} catch (NullPointerException success) {} |
167 |
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} |
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|
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/** |
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* add(null) throws NullPointerException |
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*/ |
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public void testAddNull() { |
173 |
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try { |
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LinkedTransferQueue q = new LinkedTransferQueue(); |
175 |
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q.add(null); |
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shouldThrow(); |
177 |
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} catch (NullPointerException success) {} |
178 |
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} |
179 |
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|
180 |
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/** |
181 |
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* addAll(null) throws NullPointerException |
182 |
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*/ |
183 |
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public void testAddAll1() { |
184 |
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try { |
185 |
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LinkedTransferQueue q = new LinkedTransferQueue(); |
186 |
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q.addAll(null); |
187 |
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shouldThrow(); |
188 |
– |
} catch (NullPointerException success) {} |
189 |
– |
} |
190 |
– |
|
191 |
– |
/** |
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* addAll(this) throws IllegalArgumentException |
140 |
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*/ |
141 |
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public void testAddAllSelf() { |
142 |
+ |
LinkedTransferQueue q = populatedQueue(SIZE); |
143 |
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try { |
196 |
– |
LinkedTransferQueue q = populatedQueue(SIZE); |
144 |
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q.addAll(q); |
145 |
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shouldThrow(); |
146 |
|
} catch (IllegalArgumentException success) {} |
147 |
|
} |
148 |
|
|
149 |
|
/** |
203 |
– |
* addAll of a collection with null elements throws NullPointerException |
204 |
– |
*/ |
205 |
– |
public void testAddAll2() { |
206 |
– |
try { |
207 |
– |
LinkedTransferQueue q = new LinkedTransferQueue(); |
208 |
– |
Integer[] ints = new Integer[SIZE]; |
209 |
– |
q.addAll(Arrays.asList(ints)); |
210 |
– |
shouldThrow(); |
211 |
– |
} catch (NullPointerException success) {} |
212 |
– |
} |
213 |
– |
|
214 |
– |
/** |
150 |
|
* addAll of a collection with any null elements throws |
151 |
|
* NullPointerException after possibly adding some elements |
152 |
|
*/ |
153 |
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public void testAddAll3() { |
154 |
+ |
LinkedTransferQueue q = new LinkedTransferQueue(); |
155 |
+ |
Integer[] ints = new Integer[SIZE]; |
156 |
+ |
for (int i = 0; i < SIZE - 1; ++i) |
157 |
+ |
ints[i] = i; |
158 |
|
try { |
220 |
– |
LinkedTransferQueue q = new LinkedTransferQueue(); |
221 |
– |
Integer[] ints = new Integer[SIZE]; |
222 |
– |
for (int i = 0; i < SIZE - 1; ++i) { |
223 |
– |
ints[i] = i; |
224 |
– |
} |
159 |
|
q.addAll(Arrays.asList(ints)); |
160 |
|
shouldThrow(); |
161 |
|
} catch (NullPointerException success) {} |
179 |
|
} |
180 |
|
|
181 |
|
/** |
248 |
– |
* put(null) throws NullPointerException |
249 |
– |
*/ |
250 |
– |
public void testPutNull() throws InterruptedException { |
251 |
– |
try { |
252 |
– |
LinkedTransferQueue q = new LinkedTransferQueue(); |
253 |
– |
q.put(null); |
254 |
– |
shouldThrow(); |
255 |
– |
} catch (NullPointerException success) {} |
256 |
– |
} |
257 |
– |
|
258 |
– |
/** |
182 |
|
* all elements successfully put are contained |
183 |
|
*/ |
184 |
|
public void testPut() { |
185 |
< |
LinkedTransferQueue<Integer> q = new LinkedTransferQueue<Integer>(); |
185 |
> |
LinkedTransferQueue<Integer> q = new LinkedTransferQueue<>(); |
186 |
|
for (int i = 0; i < SIZE; ++i) { |
187 |
< |
assertEquals(q.size(), i); |
187 |
> |
assertEquals(i, q.size()); |
188 |
|
q.put(i); |
189 |
|
assertTrue(q.contains(i)); |
190 |
|
} |
204 |
|
* take removes existing elements until empty, then blocks interruptibly |
205 |
|
*/ |
206 |
|
public void testBlockingTake() throws InterruptedException { |
207 |
< |
final BlockingQueue<Integer> q = populatedQueue(SIZE); |
208 |
< |
final CountDownLatch aboutToWait = new CountDownLatch(1); |
207 |
> |
final BlockingQueue q = populatedQueue(SIZE); |
208 |
> |
final CountDownLatch pleaseInterrupt = new CountDownLatch(1); |
209 |
|
Thread t = newStartedThread(new CheckedRunnable() { |
210 |
|
public void realRun() throws InterruptedException { |
211 |
|
for (int i = 0; i < SIZE; ++i) { |
212 |
< |
assertEquals(i, (int) q.take()); |
212 |
> |
assertEquals(i, q.take()); |
213 |
|
} |
214 |
< |
aboutToWait.countDown(); |
214 |
> |
|
215 |
> |
Thread.currentThread().interrupt(); |
216 |
|
try { |
217 |
|
q.take(); |
218 |
|
shouldThrow(); |
219 |
|
} catch (InterruptedException success) {} |
220 |
+ |
assertFalse(Thread.interrupted()); |
221 |
+ |
|
222 |
+ |
pleaseInterrupt.countDown(); |
223 |
+ |
try { |
224 |
+ |
q.take(); |
225 |
+ |
shouldThrow(); |
226 |
+ |
} catch (InterruptedException success) {} |
227 |
+ |
assertFalse(Thread.interrupted()); |
228 |
|
}}); |
229 |
|
|
230 |
< |
aboutToWait.await(); |
231 |
< |
waitForThreadToEnterWaitState(t, SMALL_DELAY_MS); |
230 |
> |
await(pleaseInterrupt); |
231 |
> |
assertThreadStaysAlive(t); |
232 |
|
t.interrupt(); |
233 |
< |
awaitTermination(t, MEDIUM_DELAY_MS); |
302 |
< |
checkEmpty(q); |
233 |
> |
awaitTermination(t); |
234 |
|
} |
235 |
|
|
236 |
|
/** |
262 |
|
*/ |
263 |
|
public void testTimedPoll() throws InterruptedException { |
264 |
|
LinkedTransferQueue<Integer> q = populatedQueue(SIZE); |
265 |
< |
for (int i = 0; i < SIZE; ++i) { |
266 |
< |
long t0 = System.nanoTime(); |
267 |
< |
assertEquals(i, (int) q.poll(SMALL_DELAY_MS, MILLISECONDS)); |
268 |
< |
assertTrue(millisElapsedSince(t0) < SMALL_DELAY_MS); |
269 |
< |
} |
270 |
< |
long t0 = System.nanoTime(); |
271 |
< |
assertNull(q.poll(SHORT_DELAY_MS, MILLISECONDS)); |
272 |
< |
assertTrue(millisElapsedSince(t0) >= SHORT_DELAY_MS); |
265 |
> |
long startTime = System.nanoTime(); |
266 |
> |
for (int i = 0; i < SIZE; ++i) |
267 |
> |
assertEquals(i, (int) q.poll(LONG_DELAY_MS, MILLISECONDS)); |
268 |
> |
assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS); |
269 |
> |
|
270 |
> |
startTime = System.nanoTime(); |
271 |
> |
assertNull(q.poll(timeoutMillis(), MILLISECONDS)); |
272 |
> |
assertTrue(millisElapsedSince(startTime) >= timeoutMillis()); |
273 |
|
checkEmpty(q); |
274 |
|
} |
275 |
|
|
282 |
|
final CountDownLatch aboutToWait = new CountDownLatch(1); |
283 |
|
Thread t = newStartedThread(new CheckedRunnable() { |
284 |
|
public void realRun() throws InterruptedException { |
285 |
< |
for (int i = 0; i < SIZE; ++i) { |
286 |
< |
long t0 = System.nanoTime(); |
285 |
> |
long startTime = System.nanoTime(); |
286 |
> |
for (int i = 0; i < SIZE; ++i) |
287 |
|
assertEquals(i, (int) q.poll(LONG_DELAY_MS, MILLISECONDS)); |
357 |
– |
assertTrue(millisElapsedSince(t0) < SHORT_DELAY_MS); |
358 |
– |
} |
288 |
|
aboutToWait.countDown(); |
289 |
|
try { |
290 |
< |
q.poll(MEDIUM_DELAY_MS, MILLISECONDS); |
290 |
> |
q.poll(LONG_DELAY_MS, MILLISECONDS); |
291 |
|
shouldThrow(); |
292 |
|
} catch (InterruptedException success) {} |
293 |
+ |
assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS); |
294 |
|
}}); |
295 |
|
|
296 |
|
aboutToWait.await(); |
297 |
< |
waitForThreadToEnterWaitState(t, SMALL_DELAY_MS); |
297 |
> |
waitForThreadToEnterWaitState(t); |
298 |
|
t.interrupt(); |
299 |
< |
awaitTermination(t, MEDIUM_DELAY_MS); |
299 |
> |
awaitTermination(t); |
300 |
|
checkEmpty(q); |
301 |
|
} |
302 |
|
|
308 |
|
final BlockingQueue<Integer> q = populatedQueue(SIZE); |
309 |
|
Thread t = newStartedThread(new CheckedRunnable() { |
310 |
|
public void realRun() throws InterruptedException { |
311 |
+ |
long startTime = System.nanoTime(); |
312 |
|
Thread.currentThread().interrupt(); |
313 |
< |
for (int i = 0; i < SIZE; ++i) { |
383 |
< |
long t0 = System.nanoTime(); |
313 |
> |
for (int i = 0; i < SIZE; ++i) |
314 |
|
assertEquals(i, (int) q.poll(LONG_DELAY_MS, MILLISECONDS)); |
385 |
– |
assertTrue(millisElapsedSince(t0) < SHORT_DELAY_MS); |
386 |
– |
} |
315 |
|
try { |
316 |
< |
q.poll(MEDIUM_DELAY_MS, MILLISECONDS); |
316 |
> |
q.poll(LONG_DELAY_MS, MILLISECONDS); |
317 |
|
shouldThrow(); |
318 |
|
} catch (InterruptedException success) {} |
319 |
+ |
assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS); |
320 |
|
}}); |
321 |
|
|
322 |
< |
awaitTermination(t, MEDIUM_DELAY_MS); |
322 |
> |
awaitTermination(t); |
323 |
|
checkEmpty(q); |
324 |
|
} |
325 |
|
|
370 |
|
} |
371 |
|
|
372 |
|
/** |
444 |
– |
* remove(x) removes x and returns true if present |
445 |
– |
*/ |
446 |
– |
public void testRemoveElement() throws InterruptedException { |
447 |
– |
LinkedTransferQueue q = populatedQueue(SIZE); |
448 |
– |
for (int i = 1; i < SIZE; i += 2) { |
449 |
– |
assertTrue(q.remove(i)); |
450 |
– |
} |
451 |
– |
for (int i = 0; i < SIZE; i += 2) { |
452 |
– |
assertTrue(q.remove(i)); |
453 |
– |
assertFalse(q.remove(i + 1)); |
454 |
– |
} |
455 |
– |
checkEmpty(q); |
456 |
– |
} |
457 |
– |
|
458 |
– |
/** |
373 |
|
* An add following remove(x) succeeds |
374 |
|
*/ |
375 |
|
public void testRemoveElementAndAdd() throws InterruptedException { |
415 |
|
*/ |
416 |
|
public void testContainsAll() { |
417 |
|
LinkedTransferQueue<Integer> q = populatedQueue(SIZE); |
418 |
< |
LinkedTransferQueue<Integer> p = new LinkedTransferQueue<Integer>(); |
418 |
> |
LinkedTransferQueue<Integer> p = new LinkedTransferQueue<>(); |
419 |
|
for (int i = 0; i < SIZE; ++i) { |
420 |
|
assertTrue(q.containsAll(p)); |
421 |
|
assertFalse(p.containsAll(q)); |
461 |
|
} |
462 |
|
|
463 |
|
/** |
464 |
< |
* toArray() contains all elements |
464 |
> |
* toArray() contains all elements in FIFO order |
465 |
|
*/ |
466 |
< |
public void testToArray() throws InterruptedException { |
466 |
> |
public void testToArray() { |
467 |
|
LinkedTransferQueue q = populatedQueue(SIZE); |
468 |
|
Object[] o = q.toArray(); |
469 |
|
for (int i = 0; i < o.length; i++) { |
470 |
< |
assertEquals(o[i], q.take()); |
470 |
> |
assertSame(o[i], q.poll()); |
471 |
|
} |
472 |
|
} |
473 |
|
|
474 |
|
/** |
475 |
< |
* toArray(a) contains all elements |
475 |
> |
* toArray(a) contains all elements in FIFO order |
476 |
|
*/ |
477 |
< |
public void testToArray2() throws InterruptedException { |
477 |
> |
public void testToArray2() { |
478 |
|
LinkedTransferQueue<Integer> q = populatedQueue(SIZE); |
479 |
|
Integer[] ints = new Integer[SIZE]; |
480 |
< |
ints = q.toArray(ints); |
480 |
> |
Integer[] array = q.toArray(ints); |
481 |
> |
assertSame(ints, array); |
482 |
|
for (int i = 0; i < ints.length; i++) { |
483 |
< |
assertEquals(ints[i], q.take()); |
483 |
> |
assertSame(ints[i], q.poll()); |
484 |
|
} |
485 |
|
} |
486 |
|
|
487 |
|
/** |
488 |
< |
* toArray(null) throws NullPointerException |
574 |
< |
*/ |
575 |
< |
public void testToArray_BadArg() { |
576 |
< |
LinkedTransferQueue q = populatedQueue(SIZE); |
577 |
< |
try { |
578 |
< |
Object o[] = q.toArray(null); |
579 |
< |
shouldThrow(); |
580 |
< |
} catch (NullPointerException success) {} |
581 |
< |
} |
582 |
< |
|
583 |
< |
/** |
584 |
< |
* toArray(incompatible array type) throws CCE |
488 |
> |
* toArray(incompatible array type) throws ArrayStoreException |
489 |
|
*/ |
490 |
|
public void testToArray1_BadArg() { |
491 |
|
LinkedTransferQueue q = populatedQueue(SIZE); |
492 |
|
try { |
493 |
< |
Object o[] = q.toArray(new String[10]); |
493 |
> |
q.toArray(new String[10]); |
494 |
|
shouldThrow(); |
495 |
|
} catch (ArrayStoreException success) {} |
496 |
|
} |
501 |
|
public void testIterator() throws InterruptedException { |
502 |
|
LinkedTransferQueue q = populatedQueue(SIZE); |
503 |
|
Iterator it = q.iterator(); |
504 |
< |
int i = 0; |
505 |
< |
while (it.hasNext()) { |
506 |
< |
assertEquals(it.next(), i++); |
507 |
< |
} |
504 |
> |
int i; |
505 |
> |
for (i = 0; it.hasNext(); i++) |
506 |
> |
assertTrue(q.contains(it.next())); |
507 |
> |
assertEquals(i, SIZE); |
508 |
> |
assertIteratorExhausted(it); |
509 |
> |
|
510 |
> |
it = q.iterator(); |
511 |
> |
for (i = 0; it.hasNext(); i++) |
512 |
> |
assertEquals(it.next(), q.take()); |
513 |
|
assertEquals(i, SIZE); |
514 |
+ |
assertIteratorExhausted(it); |
515 |
+ |
} |
516 |
+ |
|
517 |
+ |
/** |
518 |
+ |
* iterator of empty collection has no elements |
519 |
+ |
*/ |
520 |
+ |
public void testEmptyIterator() { |
521 |
+ |
assertIteratorExhausted(new LinkedTransferQueue().iterator()); |
522 |
|
} |
523 |
|
|
524 |
|
/** |
544 |
|
* iterator ordering is FIFO |
545 |
|
*/ |
546 |
|
public void testIteratorOrdering() { |
547 |
< |
final LinkedTransferQueue<Integer> q |
631 |
< |
= new LinkedTransferQueue<Integer>(); |
547 |
> |
final LinkedTransferQueue<Integer> q = new LinkedTransferQueue<>(); |
548 |
|
assertEquals(Integer.MAX_VALUE, q.remainingCapacity()); |
549 |
|
q.add(one); |
550 |
|
q.add(two); |
579 |
|
LinkedTransferQueue q = populatedQueue(SIZE); |
580 |
|
String s = q.toString(); |
581 |
|
for (int i = 0; i < SIZE; ++i) { |
582 |
< |
assertTrue(s.indexOf(String.valueOf(i)) >= 0); |
582 |
> |
assertTrue(s.contains(String.valueOf(i))); |
583 |
|
} |
584 |
|
} |
585 |
|
|
588 |
|
*/ |
589 |
|
public void testOfferInExecutor() { |
590 |
|
final LinkedTransferQueue q = new LinkedTransferQueue(); |
591 |
< |
final CountDownLatch threadsStarted = new CountDownLatch(2); |
592 |
< |
ExecutorService executor = Executors.newFixedThreadPool(2); |
593 |
< |
|
678 |
< |
executor.execute(new CheckedRunnable() { |
679 |
< |
public void realRun() throws InterruptedException { |
680 |
< |
threadsStarted.countDown(); |
681 |
< |
threadsStarted.await(); |
682 |
< |
assertTrue(q.offer(one, MEDIUM_DELAY_MS, MILLISECONDS)); |
683 |
< |
}}); |
591 |
> |
final CheckedBarrier threadsStarted = new CheckedBarrier(2); |
592 |
> |
final ExecutorService executor = Executors.newFixedThreadPool(2); |
593 |
> |
try (PoolCleaner cleaner = cleaner(executor)) { |
594 |
|
|
595 |
< |
executor.execute(new CheckedRunnable() { |
596 |
< |
public void realRun() throws InterruptedException { |
597 |
< |
threadsStarted.countDown(); |
598 |
< |
threadsStarted.await(); |
599 |
< |
assertSame(one, q.take()); |
600 |
< |
checkEmpty(q); |
601 |
< |
}}); |
595 |
> |
executor.execute(new CheckedRunnable() { |
596 |
> |
public void realRun() throws InterruptedException { |
597 |
> |
threadsStarted.await(); |
598 |
> |
long startTime = System.nanoTime(); |
599 |
> |
assertTrue(q.offer(one, LONG_DELAY_MS, MILLISECONDS)); |
600 |
> |
assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS); |
601 |
> |
}}); |
602 |
|
|
603 |
< |
joinPool(executor); |
603 |
> |
executor.execute(new CheckedRunnable() { |
604 |
> |
public void realRun() throws InterruptedException { |
605 |
> |
threadsStarted.await(); |
606 |
> |
assertSame(one, q.take()); |
607 |
> |
checkEmpty(q); |
608 |
> |
}}); |
609 |
> |
} |
610 |
|
} |
611 |
|
|
612 |
|
/** |
614 |
|
*/ |
615 |
|
public void testPollInExecutor() { |
616 |
|
final LinkedTransferQueue q = new LinkedTransferQueue(); |
617 |
< |
final CountDownLatch threadsStarted = new CountDownLatch(2); |
618 |
< |
ExecutorService executor = Executors.newFixedThreadPool(2); |
619 |
< |
|
704 |
< |
executor.execute(new CheckedRunnable() { |
705 |
< |
public void realRun() throws InterruptedException { |
706 |
< |
assertNull(q.poll()); |
707 |
< |
threadsStarted.countDown(); |
708 |
< |
threadsStarted.await(); |
709 |
< |
assertSame(one, q.poll(SMALL_DELAY_MS, MILLISECONDS)); |
710 |
< |
checkEmpty(q); |
711 |
< |
}}); |
617 |
> |
final CheckedBarrier threadsStarted = new CheckedBarrier(2); |
618 |
> |
final ExecutorService executor = Executors.newFixedThreadPool(2); |
619 |
> |
try (PoolCleaner cleaner = cleaner(executor)) { |
620 |
|
|
621 |
< |
executor.execute(new CheckedRunnable() { |
622 |
< |
public void realRun() throws InterruptedException { |
623 |
< |
threadsStarted.countDown(); |
624 |
< |
threadsStarted.await(); |
625 |
< |
q.put(one); |
626 |
< |
}}); |
621 |
> |
executor.execute(new CheckedRunnable() { |
622 |
> |
public void realRun() throws InterruptedException { |
623 |
> |
assertNull(q.poll()); |
624 |
> |
threadsStarted.await(); |
625 |
> |
long startTime = System.nanoTime(); |
626 |
> |
assertSame(one, q.poll(LONG_DELAY_MS, MILLISECONDS)); |
627 |
> |
assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS); |
628 |
> |
checkEmpty(q); |
629 |
> |
}}); |
630 |
|
|
631 |
< |
joinPool(executor); |
631 |
> |
executor.execute(new CheckedRunnable() { |
632 |
> |
public void realRun() throws InterruptedException { |
633 |
> |
threadsStarted.await(); |
634 |
> |
q.put(one); |
635 |
> |
}}); |
636 |
> |
} |
637 |
|
} |
638 |
|
|
639 |
|
/** |
640 |
|
* A deserialized serialized queue has same elements in same order |
641 |
|
*/ |
642 |
|
public void testSerialization() throws Exception { |
643 |
< |
LinkedTransferQueue q = populatedQueue(SIZE); |
644 |
< |
|
729 |
< |
ByteArrayOutputStream bout = new ByteArrayOutputStream(10000); |
730 |
< |
ObjectOutputStream out |
731 |
< |
= new ObjectOutputStream(new BufferedOutputStream(bout)); |
732 |
< |
out.writeObject(q); |
733 |
< |
out.close(); |
643 |
> |
Queue x = populatedQueue(SIZE); |
644 |
> |
Queue y = serialClone(x); |
645 |
|
|
646 |
< |
ByteArrayInputStream bin |
647 |
< |
= new ByteArrayInputStream(bout.toByteArray()); |
648 |
< |
ObjectInputStream in |
649 |
< |
= new ObjectInputStream(new BufferedInputStream(bin)); |
650 |
< |
LinkedTransferQueue r = (LinkedTransferQueue) in.readObject(); |
651 |
< |
|
652 |
< |
assertEquals(q.size(), r.size()); |
742 |
< |
assertEquals(q.toString(), r.toString()); |
743 |
< |
assertTrue(Arrays.equals(q.toArray(), r.toArray())); |
744 |
< |
while (!q.isEmpty()) { |
745 |
< |
assertEquals(q.remove(), r.remove()); |
646 |
> |
assertNotSame(y, x); |
647 |
> |
assertEquals(x.size(), y.size()); |
648 |
> |
assertEquals(x.toString(), y.toString()); |
649 |
> |
assertTrue(Arrays.equals(x.toArray(), y.toArray())); |
650 |
> |
while (!x.isEmpty()) { |
651 |
> |
assertFalse(y.isEmpty()); |
652 |
> |
assertEquals(x.remove(), y.remove()); |
653 |
|
} |
654 |
< |
} |
748 |
< |
|
749 |
< |
/** |
750 |
< |
* drainTo(null) throws NullPointerException |
751 |
< |
*/ |
752 |
< |
public void testDrainToNull() { |
753 |
< |
LinkedTransferQueue q = populatedQueue(SIZE); |
754 |
< |
try { |
755 |
< |
q.drainTo(null); |
756 |
< |
shouldThrow(); |
757 |
< |
} catch (NullPointerException success) {} |
758 |
< |
} |
759 |
< |
|
760 |
< |
/** |
761 |
< |
* drainTo(this) throws IllegalArgumentException |
762 |
< |
*/ |
763 |
< |
public void testDrainToSelf() { |
764 |
< |
LinkedTransferQueue q = populatedQueue(SIZE); |
765 |
< |
try { |
766 |
< |
q.drainTo(q); |
767 |
< |
shouldThrow(); |
768 |
< |
} catch (IllegalArgumentException success) {} |
654 |
> |
assertTrue(y.isEmpty()); |
655 |
|
} |
656 |
|
|
657 |
|
/** |
661 |
|
LinkedTransferQueue q = populatedQueue(SIZE); |
662 |
|
ArrayList l = new ArrayList(); |
663 |
|
q.drainTo(l); |
664 |
< |
assertEquals(q.size(), 0); |
665 |
< |
assertEquals(l.size(), SIZE); |
664 |
> |
assertEquals(0, q.size()); |
665 |
> |
assertEquals(SIZE, l.size()); |
666 |
|
for (int i = 0; i < SIZE; ++i) { |
667 |
< |
assertEquals(l.get(i), i); |
667 |
> |
assertEquals(i, l.get(i)); |
668 |
|
} |
669 |
|
q.add(zero); |
670 |
|
q.add(one); |
673 |
|
assertTrue(q.contains(one)); |
674 |
|
l.clear(); |
675 |
|
q.drainTo(l); |
676 |
< |
assertEquals(q.size(), 0); |
677 |
< |
assertEquals(l.size(), 2); |
676 |
> |
assertEquals(0, q.size()); |
677 |
> |
assertEquals(2, l.size()); |
678 |
|
for (int i = 0; i < 2; ++i) { |
679 |
< |
assertEquals(l.get(i), i); |
679 |
> |
assertEquals(i, l.get(i)); |
680 |
|
} |
681 |
|
} |
682 |
|
|
692 |
|
ArrayList l = new ArrayList(); |
693 |
|
q.drainTo(l); |
694 |
|
assertTrue(l.size() >= SIZE); |
695 |
< |
for (int i = 0; i < SIZE; ++i) { |
696 |
< |
assertEquals(l.get(i), i); |
697 |
< |
} |
812 |
< |
awaitTermination(t, MEDIUM_DELAY_MS); |
695 |
> |
for (int i = 0; i < SIZE; ++i) |
696 |
> |
assertEquals(i, l.get(i)); |
697 |
> |
awaitTermination(t); |
698 |
|
assertTrue(q.size() + l.size() >= SIZE); |
699 |
|
} |
700 |
|
|
701 |
|
/** |
817 |
– |
* drainTo(null, n) throws NullPointerException |
818 |
– |
*/ |
819 |
– |
public void testDrainToNullN() { |
820 |
– |
LinkedTransferQueue q = populatedQueue(SIZE); |
821 |
– |
try { |
822 |
– |
q.drainTo(null, SIZE); |
823 |
– |
shouldThrow(); |
824 |
– |
} catch (NullPointerException success) {} |
825 |
– |
} |
826 |
– |
|
827 |
– |
/** |
828 |
– |
* drainTo(this, n) throws IllegalArgumentException |
829 |
– |
*/ |
830 |
– |
public void testDrainToSelfN() { |
831 |
– |
LinkedTransferQueue q = populatedQueue(SIZE); |
832 |
– |
try { |
833 |
– |
q.drainTo(q, SIZE); |
834 |
– |
shouldThrow(); |
835 |
– |
} catch (IllegalArgumentException success) {} |
836 |
– |
} |
837 |
– |
|
838 |
– |
/** |
702 |
|
* drainTo(c, n) empties first min(n, size) elements of queue into c |
703 |
|
*/ |
704 |
|
public void testDrainToN() { |
710 |
|
ArrayList l = new ArrayList(); |
711 |
|
q.drainTo(l, i); |
712 |
|
int k = (i < SIZE) ? i : SIZE; |
713 |
< |
assertEquals(l.size(), k); |
714 |
< |
assertEquals(q.size(), SIZE - k); |
715 |
< |
for (int j = 0; j < k; ++j) { |
716 |
< |
assertEquals(l.get(j), j); |
717 |
< |
} |
855 |
< |
while (q.poll() != null) |
856 |
< |
; |
713 |
> |
assertEquals(k, l.size()); |
714 |
> |
assertEquals(SIZE - k, q.size()); |
715 |
> |
for (int j = 0; j < k; ++j) |
716 |
> |
assertEquals(j, l.get(j)); |
717 |
> |
do {} while (q.poll() != null); |
718 |
|
} |
719 |
|
} |
720 |
|
|
724 |
|
*/ |
725 |
|
public void testWaitingConsumer() throws InterruptedException { |
726 |
|
final LinkedTransferQueue q = new LinkedTransferQueue(); |
727 |
< |
assertEquals(q.getWaitingConsumerCount(), 0); |
727 |
> |
assertEquals(0, q.getWaitingConsumerCount()); |
728 |
|
assertFalse(q.hasWaitingConsumer()); |
729 |
|
final CountDownLatch threadStarted = new CountDownLatch(1); |
730 |
|
|
731 |
|
Thread t = newStartedThread(new CheckedRunnable() { |
732 |
|
public void realRun() throws InterruptedException { |
733 |
|
threadStarted.countDown(); |
734 |
+ |
long startTime = System.nanoTime(); |
735 |
|
assertSame(one, q.poll(LONG_DELAY_MS, MILLISECONDS)); |
736 |
< |
assertEquals(q.getWaitingConsumerCount(), 0); |
736 |
> |
assertEquals(0, q.getWaitingConsumerCount()); |
737 |
|
assertFalse(q.hasWaitingConsumer()); |
738 |
+ |
assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS); |
739 |
|
}}); |
740 |
|
|
741 |
|
threadStarted.await(); |
742 |
< |
waitForThreadToEnterWaitState(t, SMALL_DELAY_MS); |
743 |
< |
assertEquals(q.getWaitingConsumerCount(), 1); |
742 |
> |
waitForThreadToEnterWaitState(t); |
743 |
> |
assertEquals(1, q.getWaitingConsumerCount()); |
744 |
|
assertTrue(q.hasWaitingConsumer()); |
745 |
|
|
746 |
|
assertTrue(q.offer(one)); |
747 |
< |
assertEquals(q.getWaitingConsumerCount(), 0); |
747 |
> |
assertEquals(0, q.getWaitingConsumerCount()); |
748 |
|
assertFalse(q.hasWaitingConsumer()); |
749 |
|
|
750 |
< |
awaitTermination(t, MEDIUM_DELAY_MS); |
750 |
> |
awaitTermination(t); |
751 |
|
} |
752 |
|
|
753 |
|
/** |
766 |
|
* is returned by this associated poll. |
767 |
|
*/ |
768 |
|
public void testTransfer2() throws InterruptedException { |
769 |
< |
final LinkedTransferQueue<Integer> q |
907 |
< |
= new LinkedTransferQueue<Integer>(); |
769 |
> |
final LinkedTransferQueue<Integer> q = new LinkedTransferQueue<>(); |
770 |
|
final CountDownLatch threadStarted = new CountDownLatch(1); |
771 |
|
|
772 |
|
Thread t = newStartedThread(new CheckedRunnable() { |
777 |
|
}}); |
778 |
|
|
779 |
|
threadStarted.await(); |
780 |
< |
waitForThreadToEnterWaitState(t, SMALL_DELAY_MS); |
780 |
> |
waitForThreadToEnterWaitState(t); |
781 |
|
assertEquals(1, q.size()); |
782 |
|
assertSame(five, q.poll()); |
783 |
|
checkEmpty(q); |
784 |
< |
awaitTermination(t, MEDIUM_DELAY_MS); |
784 |
> |
awaitTermination(t); |
785 |
|
} |
786 |
|
|
787 |
|
/** |
788 |
|
* transfer waits until a poll occurs, and then transfers in fifo order |
789 |
|
*/ |
790 |
|
public void testTransfer3() throws InterruptedException { |
791 |
< |
final LinkedTransferQueue<Integer> q |
930 |
< |
= new LinkedTransferQueue<Integer>(); |
791 |
> |
final LinkedTransferQueue<Integer> q = new LinkedTransferQueue<>(); |
792 |
|
|
793 |
|
Thread first = newStartedThread(new CheckedRunnable() { |
794 |
|
public void realRun() throws InterruptedException { |
836 |
|
assertEquals(1, q.size()); |
837 |
|
assertTrue(q.offer(three)); |
838 |
|
assertSame(four, q.poll()); |
839 |
< |
awaitTermination(t, MEDIUM_DELAY_MS); |
839 |
> |
awaitTermination(t); |
840 |
|
} |
841 |
|
|
842 |
|
/** |
844 |
|
* is returned by this associated take. |
845 |
|
*/ |
846 |
|
public void testTransfer5() throws InterruptedException { |
847 |
< |
final LinkedTransferQueue<Integer> q |
987 |
< |
= new LinkedTransferQueue<Integer>(); |
847 |
> |
final LinkedTransferQueue<Integer> q = new LinkedTransferQueue<>(); |
848 |
|
|
849 |
|
Thread t = newStartedThread(new CheckedRunnable() { |
850 |
|
public void realRun() throws InterruptedException { |
858 |
|
assertEquals(1, q.size()); |
859 |
|
assertSame(four, q.take()); |
860 |
|
checkEmpty(q); |
861 |
< |
awaitTermination(t, MEDIUM_DELAY_MS); |
861 |
> |
awaitTermination(t); |
862 |
|
} |
863 |
|
|
864 |
|
/** |
865 |
|
* tryTransfer(null) throws NullPointerException |
866 |
|
*/ |
867 |
|
public void testTryTransfer1() { |
868 |
+ |
final LinkedTransferQueue q = new LinkedTransferQueue(); |
869 |
|
try { |
1009 |
– |
final LinkedTransferQueue q = new LinkedTransferQueue(); |
870 |
|
q.tryTransfer(null); |
871 |
|
shouldThrow(); |
872 |
|
} catch (NullPointerException success) {} |
900 |
|
assertTrue(q.tryTransfer(hotPotato)); |
901 |
|
}}); |
902 |
|
|
903 |
< |
assertSame(hotPotato, q.poll(MEDIUM_DELAY_MS, MILLISECONDS)); |
903 |
> |
long startTime = System.nanoTime(); |
904 |
> |
assertSame(hotPotato, q.poll(LONG_DELAY_MS, MILLISECONDS)); |
905 |
> |
assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS); |
906 |
|
checkEmpty(q); |
907 |
< |
awaitTermination(t, MEDIUM_DELAY_MS); |
907 |
> |
awaitTermination(t); |
908 |
|
} |
909 |
|
|
910 |
|
/** |
926 |
|
|
927 |
|
assertSame(q.take(), hotPotato); |
928 |
|
checkEmpty(q); |
929 |
< |
awaitTermination(t, MEDIUM_DELAY_MS); |
929 |
> |
awaitTermination(t); |
930 |
|
} |
931 |
|
|
932 |
|
/** |
933 |
< |
* tryTransfer waits the amount given if interrupted, and |
1072 |
< |
* throws interrupted exception |
933 |
> |
* tryTransfer blocks interruptibly if no takers |
934 |
|
*/ |
935 |
|
public void testTryTransfer5() throws InterruptedException { |
936 |
|
final LinkedTransferQueue q = new LinkedTransferQueue(); |
937 |
< |
final CountDownLatch threadStarted = new CountDownLatch(1); |
937 |
> |
final CountDownLatch pleaseInterrupt = new CountDownLatch(1); |
938 |
> |
assertTrue(q.isEmpty()); |
939 |
|
|
940 |
|
Thread t = newStartedThread(new CheckedRunnable() { |
941 |
|
public void realRun() throws InterruptedException { |
942 |
< |
long t0 = System.nanoTime(); |
943 |
< |
threadStarted.countDown(); |
942 |
> |
long startTime = System.nanoTime(); |
943 |
> |
Thread.currentThread().interrupt(); |
944 |
|
try { |
945 |
|
q.tryTransfer(new Object(), LONG_DELAY_MS, MILLISECONDS); |
946 |
|
shouldThrow(); |
947 |
|
} catch (InterruptedException success) {} |
948 |
< |
assertTrue(millisElapsedSince(t0) >= SHORT_DELAY_MS); |
948 |
> |
assertFalse(Thread.interrupted()); |
949 |
> |
|
950 |
> |
pleaseInterrupt.countDown(); |
951 |
> |
try { |
952 |
> |
q.tryTransfer(new Object(), LONG_DELAY_MS, MILLISECONDS); |
953 |
> |
shouldThrow(); |
954 |
> |
} catch (InterruptedException success) {} |
955 |
> |
assertFalse(Thread.interrupted()); |
956 |
> |
assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS); |
957 |
|
}}); |
958 |
|
|
959 |
< |
threadStarted.await(); |
960 |
< |
Thread.sleep(SHORT_DELAY_MS); |
959 |
> |
await(pleaseInterrupt); |
960 |
> |
assertThreadStaysAlive(t); |
961 |
|
t.interrupt(); |
962 |
< |
awaitTermination(t, MEDIUM_DELAY_MS); |
962 |
> |
awaitTermination(t); |
963 |
|
checkEmpty(q); |
964 |
|
} |
965 |
|
|
971 |
|
|
972 |
|
Thread t = newStartedThread(new CheckedRunnable() { |
973 |
|
public void realRun() throws InterruptedException { |
974 |
< |
long t0 = System.nanoTime(); |
974 |
> |
long startTime = System.nanoTime(); |
975 |
|
assertFalse(q.tryTransfer(new Object(), |
976 |
< |
SHORT_DELAY_MS, MILLISECONDS)); |
977 |
< |
assertTrue(millisElapsedSince(t0) >= SHORT_DELAY_MS); |
976 |
> |
timeoutMillis(), MILLISECONDS)); |
977 |
> |
assertTrue(millisElapsedSince(startTime) >= timeoutMillis()); |
978 |
|
checkEmpty(q); |
979 |
|
}}); |
980 |
|
|
981 |
< |
awaitTermination(t, MEDIUM_DELAY_MS); |
981 |
> |
awaitTermination(t); |
982 |
|
checkEmpty(q); |
983 |
|
} |
984 |
|
|
992 |
|
|
993 |
|
Thread t = newStartedThread(new CheckedRunnable() { |
994 |
|
public void realRun() throws InterruptedException { |
995 |
< |
assertTrue(q.tryTransfer(five, MEDIUM_DELAY_MS, MILLISECONDS)); |
995 |
> |
long startTime = System.nanoTime(); |
996 |
> |
assertTrue(q.tryTransfer(five, LONG_DELAY_MS, MILLISECONDS)); |
997 |
> |
assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS); |
998 |
|
checkEmpty(q); |
999 |
|
}}); |
1000 |
|
|
1004 |
|
assertSame(four, q.poll()); |
1005 |
|
assertSame(five, q.poll()); |
1006 |
|
checkEmpty(q); |
1007 |
< |
awaitTermination(t, MEDIUM_DELAY_MS); |
1007 |
> |
awaitTermination(t); |
1008 |
|
} |
1009 |
|
|
1010 |
|
/** |
1011 |
< |
* tryTransfer attempts to enqueue into the q and fails returning |
1012 |
< |
* false not enqueueing and the successive poll is null |
1011 |
> |
* tryTransfer attempts to enqueue into the queue and fails |
1012 |
> |
* returning false not enqueueing and the successive poll is null |
1013 |
|
*/ |
1014 |
|
public void testTryTransfer8() throws InterruptedException { |
1015 |
|
final LinkedTransferQueue q = new LinkedTransferQueue(); |
1016 |
|
assertTrue(q.offer(four)); |
1017 |
|
assertEquals(1, q.size()); |
1018 |
< |
long t0 = System.nanoTime(); |
1019 |
< |
assertFalse(q.tryTransfer(five, SHORT_DELAY_MS, MILLISECONDS)); |
1020 |
< |
assertTrue(millisElapsedSince(t0) >= SHORT_DELAY_MS); |
1018 |
> |
long startTime = System.nanoTime(); |
1019 |
> |
assertFalse(q.tryTransfer(five, timeoutMillis(), MILLISECONDS)); |
1020 |
> |
assertTrue(millisElapsedSince(startTime) >= timeoutMillis()); |
1021 |
|
assertEquals(1, q.size()); |
1022 |
|
assertSame(four, q.poll()); |
1023 |
|
assertNull(q.poll()); |
1025 |
|
} |
1026 |
|
|
1027 |
|
private LinkedTransferQueue<Integer> populatedQueue(int n) { |
1028 |
< |
LinkedTransferQueue<Integer> q = new LinkedTransferQueue<Integer>(); |
1028 |
> |
LinkedTransferQueue<Integer> q = new LinkedTransferQueue<>(); |
1029 |
|
checkEmpty(q); |
1030 |
|
for (int i = 0; i < n; i++) { |
1031 |
|
assertEquals(i, q.size()); |
1035 |
|
assertFalse(q.isEmpty()); |
1036 |
|
return q; |
1037 |
|
} |
1038 |
+ |
|
1039 |
+ |
/** |
1040 |
+ |
* remove(null), contains(null) always return false |
1041 |
+ |
*/ |
1042 |
+ |
public void testNeverContainsNull() { |
1043 |
+ |
Collection<?>[] qs = { |
1044 |
+ |
new LinkedTransferQueue<Object>(), |
1045 |
+ |
populatedQueue(2), |
1046 |
+ |
}; |
1047 |
+ |
|
1048 |
+ |
for (Collection<?> q : qs) { |
1049 |
+ |
assertFalse(q.contains(null)); |
1050 |
+ |
assertFalse(q.remove(null)); |
1051 |
+ |
} |
1052 |
+ |
} |
1053 |
|
} |