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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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import java.io.BufferedInputStream; |
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import java.io.BufferedOutputStream; |
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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; |
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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 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; |
21 |
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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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|
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public static void main(String[] args) { |
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junit.textui.TestRunner.run(suite()); |
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} |
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|
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public static Test suite() { |
39 |
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return new TestSuite(LinkedTransferQueueTest.class); |
40 |
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} |
34 |
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|
35 |
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void checkEmpty(LinkedTransferQueue q) throws InterruptedException { |
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assertTrue(q.isEmpty()); |
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assertEquals(0, q.size()); |
38 |
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assertNull(q.peek()); |
39 |
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assertNull(q.poll()); |
40 |
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assertNull(q.poll(0, MILLISECONDS)); |
41 |
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assertEquals(q.toString(), "[]"); |
42 |
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assertTrue(Arrays.equals(q.toArray(), new Object[0])); |
43 |
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assertFalse(q.iterator().hasNext()); |
44 |
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try { |
45 |
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q.element(); |
46 |
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shouldThrow(); |
47 |
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} catch (NoSuchElementException success) { |
48 |
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} |
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try { |
50 |
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q.iterator().next(); |
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shouldThrow(); |
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} catch (NoSuchElementException success) { |
53 |
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} |
54 |
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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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} |
39 |
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return newTestSuite(LinkedTransferQueueTest.class, |
40 |
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new Generic().testSuite()); |
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} |
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|
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/** |
57 |
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try { |
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new LinkedTransferQueue(null); |
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shouldThrow(); |
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} catch (NullPointerException success) { |
79 |
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} |
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} catch (NullPointerException success) {} |
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} |
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|
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/** |
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* NullPointerException |
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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 { |
70 |
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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) { |
92 |
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} |
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} catch (NullPointerException success) {} |
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} |
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|
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/** |
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* 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]; |
102 |
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for (int i = 0; i < SIZE - 1; ++i) { |
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ints[i] = i; |
104 |
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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) { |
108 |
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} |
87 |
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} catch (NullPointerException success) {} |
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} |
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|
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/** |
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} |
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|
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/** |
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* offer(null) throws NullPointerException |
154 |
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*/ |
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public void testOfferNull() { |
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try { |
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LinkedTransferQueue q = new LinkedTransferQueue(); |
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q.offer(null); |
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shouldThrow(); |
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} catch (NullPointerException success) { |
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} |
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} |
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|
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/** |
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* add(null) throws NullPointerException |
166 |
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*/ |
167 |
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public void testAddNull() { |
168 |
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try { |
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LinkedTransferQueue q = new LinkedTransferQueue(); |
170 |
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q.add(null); |
171 |
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shouldThrow(); |
172 |
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} catch (NullPointerException success) { |
173 |
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} |
174 |
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} |
175 |
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|
176 |
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/** |
177 |
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* addAll(null) throws NullPointerException |
178 |
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*/ |
179 |
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public void testAddAll1() { |
180 |
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try { |
181 |
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LinkedTransferQueue q = new LinkedTransferQueue(); |
182 |
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q.addAll(null); |
183 |
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shouldThrow(); |
184 |
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} catch (NullPointerException success) { |
185 |
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} |
186 |
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} |
187 |
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|
188 |
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/** |
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* addAll(this) throws IllegalArgumentException |
133 |
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*/ |
134 |
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public void testAddAllSelf() { |
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LinkedTransferQueue q = populatedQueue(SIZE); |
137 |
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q.addAll(q); |
138 |
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shouldThrow(); |
139 |
< |
} catch (IllegalArgumentException success) { |
197 |
< |
} |
198 |
< |
} |
199 |
< |
|
200 |
< |
/** |
201 |
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* addAll of a collection with null elements throws NullPointerException |
202 |
< |
*/ |
203 |
< |
public void testAddAll2() { |
204 |
< |
try { |
205 |
< |
LinkedTransferQueue q = new LinkedTransferQueue(); |
206 |
< |
Integer[] ints = new Integer[SIZE]; |
207 |
< |
q.addAll(Arrays.asList(ints)); |
208 |
< |
shouldThrow(); |
209 |
< |
} catch (NullPointerException success) { |
210 |
< |
} |
139 |
> |
} catch (IllegalArgumentException success) {} |
140 |
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} |
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|
|
142 |
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/** |
152 |
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} |
153 |
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q.addAll(Arrays.asList(ints)); |
154 |
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shouldThrow(); |
155 |
< |
} catch (NullPointerException success) { |
227 |
< |
} |
155 |
> |
} catch (NullPointerException success) {} |
156 |
|
} |
157 |
|
|
158 |
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/** |
173 |
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} |
174 |
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|
175 |
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/** |
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 |
– |
/** |
176 |
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* all elements successfully put are contained |
177 |
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*/ |
178 |
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public void testPut() { |
179 |
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LinkedTransferQueue<Integer> q = new LinkedTransferQueue<Integer>(); |
180 |
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for (int i = 0; i < SIZE; ++i) { |
181 |
< |
assertEquals(q.size(), i); |
181 |
> |
assertEquals(i, q.size()); |
182 |
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q.put(i); |
183 |
|
assertTrue(q.contains(i)); |
184 |
|
} |
195 |
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} |
196 |
|
|
197 |
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/** |
198 |
< |
* take blocks interruptibly when empty |
282 |
< |
*/ |
283 |
< |
public void testTakeFromEmpty() throws InterruptedException { |
284 |
< |
final LinkedTransferQueue q = new LinkedTransferQueue(); |
285 |
< |
Thread t = newStartedThread(new CheckedInterruptedRunnable() { |
286 |
< |
void realRun() throws InterruptedException { |
287 |
< |
q.take(); |
288 |
< |
}}); |
289 |
< |
Thread.sleep(SHORT_DELAY_MS); |
290 |
< |
t.interrupt(); |
291 |
< |
t.join(); |
292 |
< |
} |
293 |
< |
|
294 |
< |
/** |
295 |
< |
* Take removes existing elements until empty, then blocks interruptibly |
198 |
> |
* take removes existing elements until empty, then blocks interruptibly |
199 |
|
*/ |
200 |
|
public void testBlockingTake() throws InterruptedException { |
201 |
< |
final LinkedTransferQueue<Integer> q = populatedQueue(SIZE); |
202 |
< |
Thread t = newStartedThread(new CheckedInterruptedRunnable() { |
203 |
< |
void realRun() throws InterruptedException { |
201 |
> |
final BlockingQueue q = populatedQueue(SIZE); |
202 |
> |
final CountDownLatch pleaseInterrupt = new CountDownLatch(1); |
203 |
> |
Thread t = newStartedThread(new CheckedRunnable() { |
204 |
> |
public void realRun() throws InterruptedException { |
205 |
|
for (int i = 0; i < SIZE; ++i) { |
206 |
< |
threadAssertEquals(i, (int) q.take()); |
206 |
> |
assertEquals(i, q.take()); |
207 |
|
} |
208 |
< |
q.take(); |
208 |
> |
|
209 |
> |
Thread.currentThread().interrupt(); |
210 |
> |
try { |
211 |
> |
q.take(); |
212 |
> |
shouldThrow(); |
213 |
> |
} catch (InterruptedException success) {} |
214 |
> |
assertFalse(Thread.interrupted()); |
215 |
> |
|
216 |
> |
pleaseInterrupt.countDown(); |
217 |
> |
try { |
218 |
> |
q.take(); |
219 |
> |
shouldThrow(); |
220 |
> |
} catch (InterruptedException success) {} |
221 |
> |
assertFalse(Thread.interrupted()); |
222 |
|
}}); |
223 |
< |
Thread.sleep(SMALL_DELAY_MS); |
223 |
> |
|
224 |
> |
await(pleaseInterrupt); |
225 |
> |
assertThreadStaysAlive(t); |
226 |
|
t.interrupt(); |
227 |
< |
t.join(); |
309 |
< |
checkEmpty(q); |
227 |
> |
awaitTermination(t); |
228 |
|
} |
229 |
|
|
230 |
|
/** |
240 |
|
} |
241 |
|
|
242 |
|
/** |
243 |
< |
* timed pool with zero timeout succeeds when non-empty, else times out |
243 |
> |
* timed poll with zero timeout succeeds when non-empty, else times out |
244 |
|
*/ |
245 |
|
public void testTimedPoll0() throws InterruptedException { |
246 |
|
LinkedTransferQueue<Integer> q = populatedQueue(SIZE); |
252 |
|
} |
253 |
|
|
254 |
|
/** |
255 |
< |
* timed pool with nonzero timeout succeeds when non-empty, else times out |
255 |
> |
* timed poll with nonzero timeout succeeds when non-empty, else times out |
256 |
|
*/ |
257 |
|
public void testTimedPoll() throws InterruptedException { |
258 |
|
LinkedTransferQueue<Integer> q = populatedQueue(SIZE); |
259 |
|
for (int i = 0; i < SIZE; ++i) { |
260 |
< |
long t0 = System.nanoTime(); |
260 |
> |
long startTime = System.nanoTime(); |
261 |
|
assertEquals(i, (int) q.poll(LONG_DELAY_MS, MILLISECONDS)); |
262 |
< |
long millisElapsed = (System.nanoTime() - t0)/(1024 * 1024); |
345 |
< |
assertTrue(millisElapsed < SMALL_DELAY_MS); |
262 |
> |
assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS); |
263 |
|
} |
264 |
< |
assertNull(q.poll(SHORT_DELAY_MS, MILLISECONDS)); |
264 |
> |
long startTime = System.nanoTime(); |
265 |
> |
assertNull(q.poll(timeoutMillis(), MILLISECONDS)); |
266 |
> |
assertTrue(millisElapsedSince(startTime) >= timeoutMillis()); |
267 |
|
checkEmpty(q); |
268 |
|
} |
269 |
|
|
272 |
|
* returning timeout status |
273 |
|
*/ |
274 |
|
public void testInterruptedTimedPoll() throws InterruptedException { |
275 |
< |
final LinkedTransferQueue<Integer> q = populatedQueue(SIZE); |
275 |
> |
final BlockingQueue<Integer> q = populatedQueue(SIZE); |
276 |
> |
final CountDownLatch aboutToWait = new CountDownLatch(1); |
277 |
|
Thread t = newStartedThread(new CheckedRunnable() { |
278 |
< |
void realRun() throws InterruptedException { |
278 |
> |
public void realRun() throws InterruptedException { |
279 |
|
for (int i = 0; i < SIZE; ++i) { |
280 |
|
long t0 = System.nanoTime(); |
281 |
< |
threadAssertEquals(i, (int) q.poll(LONG_DELAY_MS, |
282 |
< |
MILLISECONDS)); |
363 |
< |
long millisElapsed = (System.nanoTime() - t0)/(1024 * 1024); |
364 |
< |
assertTrue(millisElapsed < SMALL_DELAY_MS); |
281 |
> |
assertEquals(i, (int) q.poll(LONG_DELAY_MS, MILLISECONDS)); |
282 |
> |
assertTrue(millisElapsedSince(t0) < SMALL_DELAY_MS); |
283 |
|
} |
284 |
+ |
long t0 = System.nanoTime(); |
285 |
+ |
aboutToWait.countDown(); |
286 |
|
try { |
287 |
< |
q.poll(LONG_DELAY_MS, MILLISECONDS); |
288 |
< |
} catch (InterruptedException success) {} |
287 |
> |
q.poll(MEDIUM_DELAY_MS, MILLISECONDS); |
288 |
> |
shouldThrow(); |
289 |
> |
} catch (InterruptedException success) { |
290 |
> |
assertTrue(millisElapsedSince(t0) < MEDIUM_DELAY_MS); |
291 |
> |
} |
292 |
|
}}); |
293 |
< |
Thread.sleep(SMALL_DELAY_MS); |
293 |
> |
|
294 |
> |
aboutToWait.await(); |
295 |
> |
waitForThreadToEnterWaitState(t, SMALL_DELAY_MS); |
296 |
|
t.interrupt(); |
297 |
< |
t.join(); |
297 |
> |
awaitTermination(t, MEDIUM_DELAY_MS); |
298 |
|
checkEmpty(q); |
299 |
|
} |
300 |
|
|
301 |
|
/** |
302 |
< |
* timed poll before a delayed offer fails; after offer succeeds; |
303 |
< |
* on interruption throws |
302 |
> |
* timed poll after thread interrupted throws InterruptedException |
303 |
> |
* instead of returning timeout status |
304 |
|
*/ |
305 |
< |
public void testTimedPollWithOffer() throws InterruptedException { |
306 |
< |
final LinkedTransferQueue q = new LinkedTransferQueue(); |
307 |
< |
Thread t = newStartedThread(new CheckedInterruptedRunnable() { |
308 |
< |
void realRun() throws InterruptedException { |
309 |
< |
threadAssertNull(q.poll(SHORT_DELAY_MS, MILLISECONDS)); |
310 |
< |
q.poll(LONG_DELAY_MS, MILLISECONDS); |
311 |
< |
q.poll(LONG_DELAY_MS, MILLISECONDS); |
305 |
> |
public void testTimedPollAfterInterrupt() throws InterruptedException { |
306 |
> |
final BlockingQueue<Integer> q = populatedQueue(SIZE); |
307 |
> |
Thread t = newStartedThread(new CheckedRunnable() { |
308 |
> |
public void realRun() throws InterruptedException { |
309 |
> |
Thread.currentThread().interrupt(); |
310 |
> |
for (int i = 0; i < SIZE; ++i) { |
311 |
> |
long t0 = System.nanoTime(); |
312 |
> |
assertEquals(i, (int) q.poll(LONG_DELAY_MS, MILLISECONDS)); |
313 |
> |
assertTrue(millisElapsedSince(t0) < SMALL_DELAY_MS); |
314 |
> |
} |
315 |
> |
try { |
316 |
> |
q.poll(MEDIUM_DELAY_MS, MILLISECONDS); |
317 |
> |
shouldThrow(); |
318 |
> |
} catch (InterruptedException success) {} |
319 |
|
}}); |
320 |
< |
Thread.sleep(SMALL_DELAY_MS); |
321 |
< |
assertTrue(q.offer(zero, SHORT_DELAY_MS, MILLISECONDS)); |
322 |
< |
t.interrupt(); |
391 |
< |
t.join(); |
320 |
> |
|
321 |
> |
awaitTermination(t, MEDIUM_DELAY_MS); |
322 |
> |
checkEmpty(q); |
323 |
|
} |
324 |
|
|
325 |
|
/** |
349 |
|
try { |
350 |
|
q.element(); |
351 |
|
shouldThrow(); |
352 |
< |
} catch (NoSuchElementException success) { |
422 |
< |
} |
352 |
> |
} catch (NoSuchElementException success) {} |
353 |
|
checkEmpty(q); |
354 |
|
} |
355 |
|
|
364 |
|
try { |
365 |
|
q.remove(); |
366 |
|
shouldThrow(); |
367 |
< |
} catch (NoSuchElementException success) { |
438 |
< |
} |
439 |
< |
checkEmpty(q); |
440 |
< |
} |
441 |
< |
|
442 |
< |
/** |
443 |
< |
* remove(x) removes x and returns true if present |
444 |
< |
*/ |
445 |
< |
public void testRemoveElement() throws InterruptedException { |
446 |
< |
LinkedTransferQueue q = populatedQueue(SIZE); |
447 |
< |
for (int i = 1; i < SIZE; i += 2) { |
448 |
< |
assertTrue(q.remove(i)); |
449 |
< |
} |
450 |
< |
for (int i = 0; i < SIZE; i += 2) { |
451 |
< |
assertTrue(q.remove(i)); |
452 |
< |
assertFalse(q.remove(i + 1)); |
453 |
< |
} |
367 |
> |
} catch (NoSuchElementException success) {} |
368 |
|
checkEmpty(q); |
369 |
|
} |
370 |
|
|
378 |
|
assertTrue(q.remove(one)); |
379 |
|
assertTrue(q.remove(two)); |
380 |
|
assertTrue(q.add(three)); |
381 |
< |
assertTrue(q.take() == three); |
381 |
> |
assertSame(q.take(), three); |
382 |
|
} |
383 |
|
|
384 |
|
/** |
460 |
|
} |
461 |
|
|
462 |
|
/** |
463 |
< |
* toArray() contains all elements |
463 |
> |
* toArray() contains all elements in FIFO order |
464 |
|
*/ |
465 |
< |
public void testToArray() throws InterruptedException { |
465 |
> |
public void testToArray() { |
466 |
|
LinkedTransferQueue q = populatedQueue(SIZE); |
467 |
|
Object[] o = q.toArray(); |
468 |
|
for (int i = 0; i < o.length; i++) { |
469 |
< |
assertEquals(o[i], q.take()); |
469 |
> |
assertSame(o[i], q.poll()); |
470 |
|
} |
471 |
|
} |
472 |
|
|
473 |
|
/** |
474 |
< |
* toArray(a) contains all elements |
474 |
> |
* toArray(a) contains all elements in FIFO order |
475 |
|
*/ |
476 |
< |
public void testToArray2() throws InterruptedException { |
476 |
> |
public void testToArray2() { |
477 |
|
LinkedTransferQueue<Integer> q = populatedQueue(SIZE); |
478 |
|
Integer[] ints = new Integer[SIZE]; |
479 |
< |
ints = q.toArray(ints); |
479 |
> |
Integer[] array = q.toArray(ints); |
480 |
> |
assertSame(ints, array); |
481 |
|
for (int i = 0; i < ints.length; i++) { |
482 |
< |
assertEquals(ints[i], q.take()); |
482 |
> |
assertSame(ints[i], q.poll()); |
483 |
|
} |
484 |
|
} |
485 |
|
|
486 |
|
/** |
487 |
< |
* toArray(null) throws NullPointerException |
573 |
< |
*/ |
574 |
< |
public void testToArray_BadArg() { |
575 |
< |
try { |
576 |
< |
LinkedTransferQueue q = populatedQueue(SIZE); |
577 |
< |
Object o[] = q.toArray(null); |
578 |
< |
shouldThrow(); |
579 |
< |
} catch (NullPointerException success) { |
580 |
< |
} |
581 |
< |
} |
582 |
< |
|
583 |
< |
/** |
584 |
< |
* toArray(incompatible array type) throws CCE |
487 |
> |
* toArray(incompatible array type) throws ArrayStoreException |
488 |
|
*/ |
489 |
|
public void testToArray1_BadArg() { |
490 |
+ |
LinkedTransferQueue q = populatedQueue(SIZE); |
491 |
|
try { |
492 |
< |
LinkedTransferQueue q = populatedQueue(SIZE); |
589 |
< |
Object o[] = q.toArray(new String[10]); |
492 |
> |
q.toArray(new String[10]); |
493 |
|
shouldThrow(); |
494 |
< |
} catch (ArrayStoreException success) { |
592 |
< |
} |
494 |
> |
} catch (ArrayStoreException success) {} |
495 |
|
} |
496 |
|
|
497 |
|
/** |
521 |
|
it.remove(); |
522 |
|
|
523 |
|
it = q.iterator(); |
524 |
< |
assertEquals(it.next(), one); |
525 |
< |
assertEquals(it.next(), three); |
524 |
> |
assertSame(it.next(), one); |
525 |
> |
assertSame(it.next(), three); |
526 |
|
assertFalse(it.hasNext()); |
527 |
|
} |
528 |
|
|
566 |
|
LinkedTransferQueue q = populatedQueue(SIZE); |
567 |
|
String s = q.toString(); |
568 |
|
for (int i = 0; i < SIZE; ++i) { |
569 |
< |
assertTrue(s.indexOf(String.valueOf(i)) >= 0); |
569 |
> |
assertTrue(s.contains(String.valueOf(i))); |
570 |
|
} |
571 |
|
} |
572 |
|
|
575 |
|
*/ |
576 |
|
public void testOfferInExecutor() { |
577 |
|
final LinkedTransferQueue q = new LinkedTransferQueue(); |
578 |
< |
q.add(one); |
677 |
< |
q.add(two); |
578 |
> |
final CheckedBarrier threadsStarted = new CheckedBarrier(2); |
579 |
|
ExecutorService executor = Executors.newFixedThreadPool(2); |
580 |
|
|
581 |
|
executor.execute(new CheckedRunnable() { |
582 |
< |
void realRun() { |
583 |
< |
threadAssertTrue(q.offer(three, MEDIUM_DELAY_MS, |
584 |
< |
MILLISECONDS)); |
582 |
> |
public void realRun() throws InterruptedException { |
583 |
> |
threadsStarted.await(); |
584 |
> |
assertTrue(q.offer(one, LONG_DELAY_MS, MILLISECONDS)); |
585 |
|
}}); |
586 |
|
|
587 |
|
executor.execute(new CheckedRunnable() { |
588 |
< |
void realRun() throws InterruptedException { |
589 |
< |
Thread.sleep(SMALL_DELAY_MS); |
590 |
< |
threadAssertEquals(one, q.take()); |
588 |
> |
public void realRun() throws InterruptedException { |
589 |
> |
threadsStarted.await(); |
590 |
> |
assertSame(one, q.take()); |
591 |
> |
checkEmpty(q); |
592 |
|
}}); |
593 |
|
|
594 |
|
joinPool(executor); |
599 |
|
*/ |
600 |
|
public void testPollInExecutor() { |
601 |
|
final LinkedTransferQueue q = new LinkedTransferQueue(); |
602 |
+ |
final CheckedBarrier threadsStarted = new CheckedBarrier(2); |
603 |
|
ExecutorService executor = Executors.newFixedThreadPool(2); |
604 |
|
|
605 |
|
executor.execute(new CheckedRunnable() { |
606 |
< |
void realRun() throws InterruptedException { |
607 |
< |
threadAssertNull(q.poll()); |
608 |
< |
threadAssertTrue(null != q.poll(MEDIUM_DELAY_MS, |
609 |
< |
MILLISECONDS)); |
610 |
< |
threadAssertTrue(q.isEmpty()); |
606 |
> |
public void realRun() throws InterruptedException { |
607 |
> |
assertNull(q.poll()); |
608 |
> |
threadsStarted.await(); |
609 |
> |
assertSame(one, q.poll(LONG_DELAY_MS, MILLISECONDS)); |
610 |
> |
checkEmpty(q); |
611 |
|
}}); |
612 |
|
|
613 |
|
executor.execute(new CheckedRunnable() { |
614 |
< |
void realRun() throws InterruptedException { |
615 |
< |
Thread.sleep(SMALL_DELAY_MS); |
614 |
> |
public void realRun() throws InterruptedException { |
615 |
> |
threadsStarted.await(); |
616 |
|
q.put(one); |
617 |
|
}}); |
618 |
|
|
623 |
|
* A deserialized serialized queue has same elements in same order |
624 |
|
*/ |
625 |
|
public void testSerialization() throws Exception { |
626 |
< |
LinkedTransferQueue q = populatedQueue(SIZE); |
627 |
< |
|
725 |
< |
ByteArrayOutputStream bout = new ByteArrayOutputStream(10000); |
726 |
< |
ObjectOutputStream out |
727 |
< |
= new ObjectOutputStream(new BufferedOutputStream(bout)); |
728 |
< |
out.writeObject(q); |
729 |
< |
out.close(); |
730 |
< |
|
731 |
< |
ByteArrayInputStream bin |
732 |
< |
= new ByteArrayInputStream(bout.toByteArray()); |
733 |
< |
ObjectInputStream in |
734 |
< |
= new ObjectInputStream(new BufferedInputStream(bin)); |
735 |
< |
LinkedTransferQueue r = (LinkedTransferQueue) in.readObject(); |
736 |
< |
|
737 |
< |
assertEquals(q.size(), r.size()); |
738 |
< |
while (!q.isEmpty()) { |
739 |
< |
assertEquals(q.remove(), r.remove()); |
740 |
< |
} |
741 |
< |
} |
626 |
> |
Queue x = populatedQueue(SIZE); |
627 |
> |
Queue y = serialClone(x); |
628 |
|
|
629 |
< |
/** |
630 |
< |
* drainTo(null) throws NullPointerException |
631 |
< |
*/ |
632 |
< |
public void testDrainToNull() { |
633 |
< |
LinkedTransferQueue q = populatedQueue(SIZE); |
634 |
< |
try { |
635 |
< |
q.drainTo(null); |
750 |
< |
shouldThrow(); |
751 |
< |
} catch (NullPointerException success) { |
752 |
< |
} |
753 |
< |
} |
754 |
< |
|
755 |
< |
/** |
756 |
< |
* drainTo(this) throws IllegalArgumentException |
757 |
< |
*/ |
758 |
< |
public void testDrainToSelf() { |
759 |
< |
LinkedTransferQueue q = populatedQueue(SIZE); |
760 |
< |
try { |
761 |
< |
q.drainTo(q); |
762 |
< |
shouldThrow(); |
763 |
< |
} catch (IllegalArgumentException success) { |
629 |
> |
assertNotSame(y, x); |
630 |
> |
assertEquals(x.size(), y.size()); |
631 |
> |
assertEquals(x.toString(), y.toString()); |
632 |
> |
assertTrue(Arrays.equals(x.toArray(), y.toArray())); |
633 |
> |
while (!x.isEmpty()) { |
634 |
> |
assertFalse(y.isEmpty()); |
635 |
> |
assertEquals(x.remove(), y.remove()); |
636 |
|
} |
637 |
+ |
assertTrue(y.isEmpty()); |
638 |
|
} |
639 |
|
|
640 |
|
/** |
644 |
|
LinkedTransferQueue q = populatedQueue(SIZE); |
645 |
|
ArrayList l = new ArrayList(); |
646 |
|
q.drainTo(l); |
647 |
< |
assertEquals(q.size(), 0); |
648 |
< |
assertEquals(l.size(), SIZE); |
647 |
> |
assertEquals(0, q.size()); |
648 |
> |
assertEquals(SIZE, l.size()); |
649 |
|
for (int i = 0; i < SIZE; ++i) { |
650 |
< |
assertEquals(l.get(i), i); |
650 |
> |
assertEquals(i, l.get(i)); |
651 |
|
} |
652 |
|
q.add(zero); |
653 |
|
q.add(one); |
656 |
|
assertTrue(q.contains(one)); |
657 |
|
l.clear(); |
658 |
|
q.drainTo(l); |
659 |
< |
assertEquals(q.size(), 0); |
660 |
< |
assertEquals(l.size(), 2); |
659 |
> |
assertEquals(0, q.size()); |
660 |
> |
assertEquals(2, l.size()); |
661 |
|
for (int i = 0; i < 2; ++i) { |
662 |
< |
assertEquals(l.get(i), i); |
662 |
> |
assertEquals(i, l.get(i)); |
663 |
|
} |
664 |
|
} |
665 |
|
|
669 |
|
public void testDrainToWithActivePut() throws InterruptedException { |
670 |
|
final LinkedTransferQueue q = populatedQueue(SIZE); |
671 |
|
Thread t = newStartedThread(new CheckedRunnable() { |
672 |
< |
void realRun() { |
672 |
> |
public void realRun() { |
673 |
|
q.put(SIZE + 1); |
674 |
|
}}); |
675 |
|
ArrayList l = new ArrayList(); |
676 |
|
q.drainTo(l); |
677 |
|
assertTrue(l.size() >= SIZE); |
678 |
< |
for (int i = 0; i < SIZE; ++i) { |
679 |
< |
assertEquals(l.get(i), i); |
680 |
< |
} |
808 |
< |
t.join(); |
678 |
> |
for (int i = 0; i < SIZE; ++i) |
679 |
> |
assertEquals(i, l.get(i)); |
680 |
> |
awaitTermination(t, MEDIUM_DELAY_MS); |
681 |
|
assertTrue(q.size() + l.size() >= SIZE); |
682 |
|
} |
683 |
|
|
684 |
|
/** |
685 |
< |
* drainTo(null, n) throws NullPointerException |
814 |
< |
*/ |
815 |
< |
public void testDrainToNullN() { |
816 |
< |
LinkedTransferQueue q = populatedQueue(SIZE); |
817 |
< |
try { |
818 |
< |
q.drainTo(null, SIZE); |
819 |
< |
shouldThrow(); |
820 |
< |
} catch (NullPointerException success) { |
821 |
< |
} |
822 |
< |
} |
823 |
< |
|
824 |
< |
/** |
825 |
< |
* drainTo(this, n) throws IllegalArgumentException |
826 |
< |
*/ |
827 |
< |
public void testDrainToSelfN() { |
828 |
< |
LinkedTransferQueue q = populatedQueue(SIZE); |
829 |
< |
try { |
830 |
< |
q.drainTo(q, SIZE); |
831 |
< |
shouldThrow(); |
832 |
< |
} catch (IllegalArgumentException success) { |
833 |
< |
} |
834 |
< |
} |
835 |
< |
|
836 |
< |
/** |
837 |
< |
* drainTo(c, n) empties first max {n, size} elements of queue into c |
685 |
> |
* drainTo(c, n) empties first min(n, size) elements of queue into c |
686 |
|
*/ |
687 |
|
public void testDrainToN() { |
688 |
|
LinkedTransferQueue q = new LinkedTransferQueue(); |
693 |
|
ArrayList l = new ArrayList(); |
694 |
|
q.drainTo(l, i); |
695 |
|
int k = (i < SIZE) ? i : SIZE; |
696 |
< |
assertEquals(l.size(), k); |
697 |
< |
assertEquals(q.size(), SIZE - k); |
698 |
< |
for (int j = 0; j < k; ++j) { |
699 |
< |
assertEquals(l.get(j), j); |
852 |
< |
} |
696 |
> |
assertEquals(k, l.size()); |
697 |
> |
assertEquals(SIZE - k, q.size()); |
698 |
> |
for (int j = 0; j < k; ++j) |
699 |
> |
assertEquals(j, l.get(j)); |
700 |
|
while (q.poll() != null) |
701 |
|
; |
702 |
|
} |
708 |
|
*/ |
709 |
|
public void testWaitingConsumer() throws InterruptedException { |
710 |
|
final LinkedTransferQueue q = new LinkedTransferQueue(); |
711 |
< |
assertEquals(q.getWaitingConsumerCount(), 0); |
711 |
> |
assertEquals(0, q.getWaitingConsumerCount()); |
712 |
|
assertFalse(q.hasWaitingConsumer()); |
713 |
+ |
final CountDownLatch threadStarted = new CountDownLatch(1); |
714 |
|
|
715 |
|
Thread t = newStartedThread(new CheckedRunnable() { |
716 |
< |
void realRun() throws InterruptedException { |
717 |
< |
Thread.sleep(SMALL_DELAY_MS); |
718 |
< |
threadAssertTrue(q.hasWaitingConsumer()); |
719 |
< |
threadAssertEquals(q.getWaitingConsumerCount(), 1); |
720 |
< |
threadAssertTrue(q.offer(new Object())); |
873 |
< |
threadAssertFalse(q.hasWaitingConsumer()); |
874 |
< |
threadAssertEquals(q.getWaitingConsumerCount(), 0); |
716 |
> |
public void realRun() throws InterruptedException { |
717 |
> |
threadStarted.countDown(); |
718 |
> |
assertSame(one, q.poll(LONG_DELAY_MS, MILLISECONDS)); |
719 |
> |
assertEquals(0, q.getWaitingConsumerCount()); |
720 |
> |
assertFalse(q.hasWaitingConsumer()); |
721 |
|
}}); |
722 |
|
|
723 |
< |
assertTrue(q.poll(LONG_DELAY_MS, MILLISECONDS) != null); |
724 |
< |
assertEquals(q.getWaitingConsumerCount(), 0); |
723 |
> |
threadStarted.await(); |
724 |
> |
waitForThreadToEnterWaitState(t, SMALL_DELAY_MS); |
725 |
> |
assertEquals(1, q.getWaitingConsumerCount()); |
726 |
> |
assertTrue(q.hasWaitingConsumer()); |
727 |
> |
|
728 |
> |
assertTrue(q.offer(one)); |
729 |
> |
assertEquals(0, q.getWaitingConsumerCount()); |
730 |
|
assertFalse(q.hasWaitingConsumer()); |
731 |
< |
t.join(); |
731 |
> |
|
732 |
> |
awaitTermination(t, MEDIUM_DELAY_MS); |
733 |
|
} |
734 |
|
|
735 |
|
/** |
750 |
|
public void testTransfer2() throws InterruptedException { |
751 |
|
final LinkedTransferQueue<Integer> q |
752 |
|
= new LinkedTransferQueue<Integer>(); |
753 |
+ |
final CountDownLatch threadStarted = new CountDownLatch(1); |
754 |
|
|
755 |
|
Thread t = newStartedThread(new CheckedRunnable() { |
756 |
< |
void realRun() throws InterruptedException { |
757 |
< |
q.transfer(SIZE); |
758 |
< |
threadAssertTrue(q.isEmpty()); |
756 |
> |
public void realRun() throws InterruptedException { |
757 |
> |
threadStarted.countDown(); |
758 |
> |
q.transfer(five); |
759 |
> |
checkEmpty(q); |
760 |
|
}}); |
761 |
|
|
762 |
< |
Thread.sleep(SHORT_DELAY_MS); |
762 |
> |
threadStarted.await(); |
763 |
> |
waitForThreadToEnterWaitState(t, SMALL_DELAY_MS); |
764 |
|
assertEquals(1, q.size()); |
765 |
< |
assertEquals(SIZE, (int) q.poll()); |
766 |
< |
assertTrue(q.isEmpty()); |
767 |
< |
t.join(); |
765 |
> |
assertSame(five, q.poll()); |
766 |
> |
checkEmpty(q); |
767 |
> |
awaitTermination(t, MEDIUM_DELAY_MS); |
768 |
|
} |
769 |
|
|
770 |
|
/** |
775 |
|
= new LinkedTransferQueue<Integer>(); |
776 |
|
|
777 |
|
Thread first = newStartedThread(new CheckedRunnable() { |
778 |
< |
void realRun() throws InterruptedException { |
779 |
< |
Integer i = SIZE + 1; |
780 |
< |
q.transfer(i); |
781 |
< |
threadAssertTrue(!q.contains(i)); |
927 |
< |
threadAssertEquals(1, q.size()); |
778 |
> |
public void realRun() throws InterruptedException { |
779 |
> |
q.transfer(four); |
780 |
> |
assertTrue(!q.contains(four)); |
781 |
> |
assertEquals(1, q.size()); |
782 |
|
}}); |
783 |
|
|
784 |
|
Thread interruptedThread = newStartedThread( |
785 |
|
new CheckedInterruptedRunnable() { |
786 |
< |
void realRun() throws InterruptedException { |
787 |
< |
while (q.size() == 0) |
786 |
> |
public void realRun() throws InterruptedException { |
787 |
> |
while (q.isEmpty()) |
788 |
|
Thread.yield(); |
789 |
< |
q.transfer(SIZE); |
789 |
> |
q.transfer(five); |
790 |
|
}}); |
791 |
|
|
792 |
|
while (q.size() < 2) |
793 |
|
Thread.yield(); |
794 |
|
assertEquals(2, q.size()); |
795 |
< |
assertEquals(SIZE + 1, (int) q.poll()); |
795 |
> |
assertSame(four, q.poll()); |
796 |
|
first.join(); |
797 |
|
assertEquals(1, q.size()); |
798 |
|
interruptedThread.interrupt(); |
799 |
|
interruptedThread.join(); |
800 |
< |
assertEquals(0, q.size()); |
947 |
< |
assertTrue(q.isEmpty()); |
800 |
> |
checkEmpty(q); |
801 |
|
} |
802 |
|
|
803 |
|
/** |
808 |
|
final LinkedTransferQueue q = new LinkedTransferQueue(); |
809 |
|
|
810 |
|
Thread t = newStartedThread(new CheckedRunnable() { |
811 |
< |
void realRun() throws InterruptedException { |
811 |
> |
public void realRun() throws InterruptedException { |
812 |
|
q.transfer(four); |
813 |
< |
threadAssertFalse(q.contains(four)); |
814 |
< |
threadAssertEquals(three, q.poll()); |
813 |
> |
assertFalse(q.contains(four)); |
814 |
> |
assertSame(three, q.poll()); |
815 |
|
}}); |
816 |
|
|
817 |
< |
Thread.sleep(SHORT_DELAY_MS); |
817 |
> |
while (q.isEmpty()) |
818 |
> |
Thread.yield(); |
819 |
> |
assertFalse(q.isEmpty()); |
820 |
> |
assertEquals(1, q.size()); |
821 |
|
assertTrue(q.offer(three)); |
822 |
< |
assertEquals(four, q.poll()); |
823 |
< |
t.join(); |
822 |
> |
assertSame(four, q.poll()); |
823 |
> |
awaitTermination(t, MEDIUM_DELAY_MS); |
824 |
|
} |
825 |
|
|
826 |
|
/** |
832 |
|
= new LinkedTransferQueue<Integer>(); |
833 |
|
|
834 |
|
Thread t = newStartedThread(new CheckedRunnable() { |
835 |
< |
void realRun() throws InterruptedException { |
836 |
< |
q.transfer(SIZE); |
835 |
> |
public void realRun() throws InterruptedException { |
836 |
> |
q.transfer(four); |
837 |
|
checkEmpty(q); |
838 |
|
}}); |
839 |
|
|
840 |
< |
Thread.sleep(SHORT_DELAY_MS); |
841 |
< |
assertEquals(SIZE, (int) q.take()); |
840 |
> |
while (q.isEmpty()) |
841 |
> |
Thread.yield(); |
842 |
> |
assertFalse(q.isEmpty()); |
843 |
> |
assertEquals(1, q.size()); |
844 |
> |
assertSame(four, q.take()); |
845 |
|
checkEmpty(q); |
846 |
< |
t.join(); |
846 |
> |
awaitTermination(t, MEDIUM_DELAY_MS); |
847 |
|
} |
848 |
|
|
849 |
|
/** |
877 |
|
final LinkedTransferQueue q = new LinkedTransferQueue(); |
878 |
|
|
879 |
|
Thread t = newStartedThread(new CheckedRunnable() { |
880 |
< |
void realRun() { |
880 |
> |
public void realRun() { |
881 |
|
while (! q.hasWaitingConsumer()) |
882 |
|
Thread.yield(); |
883 |
< |
threadAssertTrue(q.hasWaitingConsumer()); |
884 |
< |
threadAssertTrue(q.isEmpty()); |
885 |
< |
threadAssertTrue(q.size() == 0); |
1027 |
< |
threadAssertTrue(q.tryTransfer(hotPotato)); |
883 |
> |
assertTrue(q.hasWaitingConsumer()); |
884 |
> |
checkEmpty(q); |
885 |
> |
assertTrue(q.tryTransfer(hotPotato)); |
886 |
|
}}); |
887 |
|
|
888 |
< |
assertTrue(q.poll(MEDIUM_DELAY_MS, MILLISECONDS) == hotPotato); |
888 |
> |
assertSame(hotPotato, q.poll(MEDIUM_DELAY_MS, MILLISECONDS)); |
889 |
|
checkEmpty(q); |
890 |
< |
t.join(); |
890 |
> |
awaitTermination(t, MEDIUM_DELAY_MS); |
891 |
|
} |
892 |
|
|
893 |
|
/** |
899 |
|
final LinkedTransferQueue q = new LinkedTransferQueue(); |
900 |
|
|
901 |
|
Thread t = newStartedThread(new CheckedRunnable() { |
902 |
< |
void realRun() { |
902 |
> |
public void realRun() { |
903 |
|
while (! q.hasWaitingConsumer()) |
904 |
|
Thread.yield(); |
905 |
< |
threadAssertTrue(q.hasWaitingConsumer()); |
906 |
< |
threadAssertTrue(q.isEmpty()); |
907 |
< |
threadAssertTrue(q.size() == 0); |
1050 |
< |
threadAssertTrue(q.tryTransfer(hotPotato)); |
905 |
> |
assertTrue(q.hasWaitingConsumer()); |
906 |
> |
checkEmpty(q); |
907 |
> |
assertTrue(q.tryTransfer(hotPotato)); |
908 |
|
}}); |
909 |
|
|
910 |
< |
assertTrue(q.take() == hotPotato); |
910 |
> |
assertSame(q.take(), hotPotato); |
911 |
|
checkEmpty(q); |
912 |
< |
t.join(); |
912 |
> |
awaitTermination(t, MEDIUM_DELAY_MS); |
913 |
|
} |
914 |
|
|
915 |
|
/** |
916 |
< |
* tryTransfer waits the amount given if interrupted, and |
1060 |
< |
* throws interrupted exception |
916 |
> |
* tryTransfer blocks interruptibly if no takers |
917 |
|
*/ |
918 |
|
public void testTryTransfer5() throws InterruptedException { |
919 |
|
final LinkedTransferQueue q = new LinkedTransferQueue(); |
920 |
+ |
final CountDownLatch pleaseInterrupt = new CountDownLatch(1); |
921 |
+ |
assertTrue(q.isEmpty()); |
922 |
+ |
|
923 |
+ |
Thread t = newStartedThread(new CheckedRunnable() { |
924 |
+ |
public void realRun() throws InterruptedException { |
925 |
+ |
Thread.currentThread().interrupt(); |
926 |
+ |
try { |
927 |
+ |
q.tryTransfer(new Object(), LONG_DELAY_MS, MILLISECONDS); |
928 |
+ |
shouldThrow(); |
929 |
+ |
} catch (InterruptedException success) {} |
930 |
+ |
assertFalse(Thread.interrupted()); |
931 |
|
|
932 |
< |
Thread toInterrupt = newStartedThread(new CheckedInterruptedRunnable() { |
933 |
< |
void realRun() throws InterruptedException { |
934 |
< |
q.tryTransfer(new Object(), LONG_DELAY_MS, MILLISECONDS); |
932 |
> |
pleaseInterrupt.countDown(); |
933 |
> |
try { |
934 |
> |
q.tryTransfer(new Object(), LONG_DELAY_MS, MILLISECONDS); |
935 |
> |
shouldThrow(); |
936 |
> |
} catch (InterruptedException success) {} |
937 |
> |
assertFalse(Thread.interrupted()); |
938 |
|
}}); |
939 |
|
|
940 |
< |
Thread.sleep(SMALL_DELAY_MS); |
941 |
< |
toInterrupt.interrupt(); |
942 |
< |
toInterrupt.join(); |
940 |
> |
await(pleaseInterrupt); |
941 |
> |
assertThreadStaysAlive(t); |
942 |
> |
t.interrupt(); |
943 |
> |
awaitTermination(t); |
944 |
> |
checkEmpty(q); |
945 |
|
} |
946 |
|
|
947 |
|
/** |
948 |
< |
* tryTransfer gives up after the timeout and return false |
948 |
> |
* tryTransfer gives up after the timeout and returns false |
949 |
|
*/ |
950 |
|
public void testTryTransfer6() throws InterruptedException { |
951 |
|
final LinkedTransferQueue q = new LinkedTransferQueue(); |
952 |
|
|
953 |
|
Thread t = newStartedThread(new CheckedRunnable() { |
954 |
< |
void realRun() throws InterruptedException { |
955 |
< |
threadAssertFalse |
956 |
< |
(q.tryTransfer(new Object(), |
957 |
< |
SHORT_DELAY_MS, MILLISECONDS)); |
954 |
> |
public void realRun() throws InterruptedException { |
955 |
> |
long t0 = System.nanoTime(); |
956 |
> |
assertFalse(q.tryTransfer(new Object(), |
957 |
> |
timeoutMillis(), MILLISECONDS)); |
958 |
> |
assertTrue(millisElapsedSince(t0) >= timeoutMillis()); |
959 |
> |
checkEmpty(q); |
960 |
|
}}); |
961 |
|
|
962 |
< |
Thread.sleep(SMALL_DELAY_MS); |
962 |
> |
awaitTermination(t); |
963 |
|
checkEmpty(q); |
1090 |
– |
t.join(); |
964 |
|
} |
965 |
|
|
966 |
|
/** |
972 |
|
assertTrue(q.offer(four)); |
973 |
|
|
974 |
|
Thread t = newStartedThread(new CheckedRunnable() { |
975 |
< |
void realRun() throws InterruptedException { |
976 |
< |
threadAssertTrue(q.tryTransfer(five, |
977 |
< |
MEDIUM_DELAY_MS, MILLISECONDS)); |
1105 |
< |
threadAssertTrue(q.isEmpty()); |
975 |
> |
public void realRun() throws InterruptedException { |
976 |
> |
assertTrue(q.tryTransfer(five, MEDIUM_DELAY_MS, MILLISECONDS)); |
977 |
> |
checkEmpty(q); |
978 |
|
}}); |
979 |
|
|
980 |
< |
Thread.sleep(SHORT_DELAY_MS); |
980 |
> |
while (q.size() != 2) |
981 |
> |
Thread.yield(); |
982 |
|
assertEquals(2, q.size()); |
983 |
< |
assertEquals(four, q.poll()); |
984 |
< |
assertEquals(five, q.poll()); |
983 |
> |
assertSame(four, q.poll()); |
984 |
> |
assertSame(five, q.poll()); |
985 |
|
checkEmpty(q); |
986 |
< |
t.join(); |
986 |
> |
awaitTermination(t, MEDIUM_DELAY_MS); |
987 |
|
} |
988 |
|
|
989 |
|
/** |
990 |
< |
* tryTransfer attempts to enqueue into the q and fails returning |
991 |
< |
* false not enqueueing and the successive poll is null |
990 |
> |
* tryTransfer attempts to enqueue into the queue and fails |
991 |
> |
* returning false not enqueueing and the successive poll is null |
992 |
|
*/ |
993 |
|
public void testTryTransfer8() throws InterruptedException { |
994 |
|
final LinkedTransferQueue q = new LinkedTransferQueue(); |
995 |
|
assertTrue(q.offer(four)); |
996 |
|
assertEquals(1, q.size()); |
997 |
< |
assertFalse(q.tryTransfer(five, SHORT_DELAY_MS, MILLISECONDS)); |
997 |
> |
long t0 = System.nanoTime(); |
998 |
> |
assertFalse(q.tryTransfer(five, timeoutMillis(), MILLISECONDS)); |
999 |
> |
assertTrue(millisElapsedSince(t0) >= timeoutMillis()); |
1000 |
|
assertEquals(1, q.size()); |
1001 |
< |
assertEquals(four, q.poll()); |
1001 |
> |
assertSame(four, q.poll()); |
1002 |
|
assertNull(q.poll()); |
1003 |
|
checkEmpty(q); |
1004 |
|
} |
1005 |
|
|
1006 |
|
private LinkedTransferQueue<Integer> populatedQueue(int n) { |
1007 |
|
LinkedTransferQueue<Integer> q = new LinkedTransferQueue<Integer>(); |
1008 |
< |
assertTrue(q.isEmpty()); |
1008 |
> |
checkEmpty(q); |
1009 |
|
for (int i = 0; i < n; i++) { |
1010 |
|
assertEquals(i, q.size()); |
1011 |
|
assertTrue(q.offer(i)); |
1014 |
|
assertFalse(q.isEmpty()); |
1015 |
|
return q; |
1016 |
|
} |
1017 |
+ |
|
1018 |
+ |
/** |
1019 |
+ |
* remove(null), contains(null) always return false |
1020 |
+ |
*/ |
1021 |
+ |
public void testNeverContainsNull() { |
1022 |
+ |
Collection<?>[] qs = { |
1023 |
+ |
new LinkedTransferQueue<Object>(), |
1024 |
+ |
populatedQueue(2), |
1025 |
+ |
}; |
1026 |
+ |
|
1027 |
+ |
for (Collection<?> q : qs) { |
1028 |
+ |
assertFalse(q.contains(null)); |
1029 |
+ |
assertFalse(q.remove(null)); |
1030 |
+ |
} |
1031 |
+ |
} |
1032 |
|
} |