1 |
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/* |
2 |
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* Written by Doug Lea with assistance from members of JCP JSR-166 |
3 |
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* Expert Group and released to the public domain, as explained at |
4 |
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* http://creativecommons.org/licenses/publicdomain |
5 |
< |
* Other contributors include Andrew Wright, Jeffrey Hayes, |
6 |
< |
* Pat Fisher, Mike Judd. |
4 |
> |
* http://creativecommons.org/publicdomain/zero/1.0/ |
5 |
> |
* Other contributors include Andrew Wright, Jeffrey Hayes, |
6 |
> |
* Pat Fisher, Mike Judd. |
7 |
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*/ |
8 |
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|
9 |
< |
import junit.framework.*; |
10 |
< |
import java.util.*; |
11 |
< |
import java.util.concurrent.*; |
12 |
< |
import java.io.*; |
9 |
> |
import static java.util.concurrent.TimeUnit.MILLISECONDS; |
10 |
> |
|
11 |
> |
import java.util.ArrayList; |
12 |
> |
import java.util.Arrays; |
13 |
> |
import java.util.Collection; |
14 |
> |
import java.util.Iterator; |
15 |
> |
import java.util.NoSuchElementException; |
16 |
> |
import java.util.Queue; |
17 |
> |
import java.util.concurrent.BlockingQueue; |
18 |
> |
import java.util.concurrent.CountDownLatch; |
19 |
> |
import java.util.concurrent.Executors; |
20 |
> |
import java.util.concurrent.ExecutorService; |
21 |
> |
import java.util.concurrent.LinkedBlockingQueue; |
22 |
> |
|
23 |
> |
import junit.framework.Test; |
24 |
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|
25 |
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public class LinkedBlockingQueueTest extends JSR166TestCase { |
26 |
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|
27 |
+ |
public static class Unbounded extends BlockingQueueTest { |
28 |
+ |
protected BlockingQueue emptyCollection() { |
29 |
+ |
return new LinkedBlockingQueue(); |
30 |
+ |
} |
31 |
+ |
} |
32 |
+ |
|
33 |
+ |
public static class Bounded extends BlockingQueueTest { |
34 |
+ |
protected BlockingQueue emptyCollection() { |
35 |
+ |
return new LinkedBlockingQueue(SIZE); |
36 |
+ |
} |
37 |
+ |
} |
38 |
+ |
|
39 |
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public static void main(String[] args) { |
40 |
< |
junit.textui.TestRunner.run (suite()); |
40 |
> |
main(suite(), args); |
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} |
42 |
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|
43 |
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public static Test suite() { |
44 |
< |
return new TestSuite(LinkedBlockingQueueTest.class); |
44 |
> |
class Implementation implements CollectionImplementation { |
45 |
> |
public Class<?> klazz() { return LinkedBlockingQueue.class; } |
46 |
> |
public Collection emptyCollection() { return new LinkedBlockingQueue(); } |
47 |
> |
public Object makeElement(int i) { return JSR166TestCase.itemFor(i); } |
48 |
> |
public boolean isConcurrent() { return true; } |
49 |
> |
public boolean permitsNulls() { return false; } |
50 |
> |
} |
51 |
> |
return newTestSuite(LinkedBlockingQueueTest.class, |
52 |
> |
new Unbounded().testSuite(), |
53 |
> |
new Bounded().testSuite(), |
54 |
> |
CollectionTest.testSuite(new Implementation())); |
55 |
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} |
56 |
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|
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– |
|
57 |
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/** |
58 |
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* Create a queue of given size containing consecutive |
59 |
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* Integers 0 ... n. |
58 |
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* Returns a new queue of given size containing consecutive |
59 |
> |
* Items 0 ... n - 1. |
60 |
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*/ |
61 |
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private LinkedBlockingQueue populatedQueue(int n) { |
62 |
< |
LinkedBlockingQueue q = new LinkedBlockingQueue(n); |
61 |
> |
private static LinkedBlockingQueue<Item> populatedQueue(int n) { |
62 |
> |
LinkedBlockingQueue<Item> q = new LinkedBlockingQueue<>(n); |
63 |
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assertTrue(q.isEmpty()); |
64 |
< |
for(int i = 0; i < n; i++) |
65 |
< |
assertTrue(q.offer(new Integer(i))); |
64 |
> |
for (int i = 0; i < n; i++) |
65 |
> |
mustOffer(q, i); |
66 |
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assertFalse(q.isEmpty()); |
67 |
< |
assertEquals(0, q.remainingCapacity()); |
68 |
< |
assertEquals(n, q.size()); |
67 |
> |
mustEqual(0, q.remainingCapacity()); |
68 |
> |
mustEqual(n, q.size()); |
69 |
> |
mustEqual(0, q.peek()); |
70 |
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return q; |
71 |
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} |
72 |
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|
72 |
> |
|
73 |
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/** |
74 |
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* A new queue has the indicated capacity, or Integer.MAX_VALUE if |
75 |
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* none given |
76 |
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*/ |
77 |
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public void testConstructor1() { |
78 |
< |
assertEquals(SIZE, new LinkedBlockingQueue(SIZE).remainingCapacity()); |
79 |
< |
assertEquals(Integer.MAX_VALUE, new LinkedBlockingQueue().remainingCapacity()); |
78 |
> |
mustEqual(SIZE, new LinkedBlockingQueue<Item>(SIZE).remainingCapacity()); |
79 |
> |
mustEqual(Integer.MAX_VALUE, new LinkedBlockingQueue<Item>().remainingCapacity()); |
80 |
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} |
81 |
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|
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/** |
83 |
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* Constructor throws IAE if capacity argument nonpositive |
83 |
> |
* Constructor throws IllegalArgumentException if capacity argument nonpositive |
84 |
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*/ |
85 |
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public void testConstructor2() { |
86 |
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try { |
87 |
< |
LinkedBlockingQueue q = new LinkedBlockingQueue(0); |
87 |
> |
new LinkedBlockingQueue<Item>(0); |
88 |
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shouldThrow(); |
89 |
< |
} |
57 |
< |
catch (IllegalArgumentException success) {} |
89 |
> |
} catch (IllegalArgumentException success) {} |
90 |
|
} |
91 |
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|
92 |
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/** |
93 |
< |
* Initializing from null Collection throws NPE |
93 |
> |
* Initializing from null Collection throws NullPointerException |
94 |
|
*/ |
95 |
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public void testConstructor3() { |
96 |
|
try { |
97 |
< |
LinkedBlockingQueue q = new LinkedBlockingQueue(null); |
97 |
> |
new LinkedBlockingQueue<Item>(null); |
98 |
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shouldThrow(); |
99 |
< |
} |
68 |
< |
catch (NullPointerException success) {} |
99 |
> |
} catch (NullPointerException success) {} |
100 |
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} |
101 |
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|
102 |
|
/** |
103 |
< |
* Initializing from Collection of null elements throws NPE |
103 |
> |
* Initializing from Collection of null elements throws NullPointerException |
104 |
|
*/ |
105 |
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public void testConstructor4() { |
106 |
+ |
Collection<Item> elements = Arrays.asList(new Item[SIZE]); |
107 |
|
try { |
108 |
< |
Integer[] ints = new Integer[SIZE]; |
77 |
< |
LinkedBlockingQueue q = new LinkedBlockingQueue(Arrays.asList(ints)); |
108 |
> |
new LinkedBlockingQueue<Item>(elements); |
109 |
|
shouldThrow(); |
110 |
< |
} |
80 |
< |
catch (NullPointerException success) {} |
110 |
> |
} catch (NullPointerException success) {} |
111 |
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} |
112 |
|
|
113 |
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/** |
114 |
< |
* Initializing from Collection with some null elements throws NPE |
114 |
> |
* Initializing from Collection with some null elements throws |
115 |
> |
* NullPointerException |
116 |
|
*/ |
117 |
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public void testConstructor5() { |
118 |
+ |
Item[] items = new Item[2]; |
119 |
+ |
items[0] = zero; |
120 |
+ |
Collection<Item> elements = Arrays.asList(items); |
121 |
|
try { |
122 |
< |
Integer[] ints = new Integer[SIZE]; |
89 |
< |
for (int i = 0; i < SIZE-1; ++i) |
90 |
< |
ints[i] = new Integer(i); |
91 |
< |
LinkedBlockingQueue q = new LinkedBlockingQueue(Arrays.asList(ints)); |
122 |
> |
new LinkedBlockingQueue<Item>(elements); |
123 |
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shouldThrow(); |
124 |
< |
} |
94 |
< |
catch (NullPointerException success) {} |
124 |
> |
} catch (NullPointerException success) {} |
125 |
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} |
126 |
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|
127 |
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/** |
128 |
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* 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 |
< |
Integer[] ints = new Integer[SIZE]; |
133 |
< |
for (int i = 0; i < SIZE; ++i) |
134 |
< |
ints[i] = new Integer(i); |
105 |
< |
LinkedBlockingQueue q = new LinkedBlockingQueue(Arrays.asList(ints)); |
106 |
< |
for (int i = 0; i < SIZE; ++i) |
107 |
< |
assertEquals(ints[i], q.poll()); |
108 |
< |
} |
109 |
< |
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 |
|
} |
136 |
|
|
137 |
|
/** |
138 |
|
* Queue transitions from empty to full when elements added |
139 |
|
*/ |
140 |
|
public void testEmptyFull() { |
141 |
< |
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 |
|
|
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 |
|
/** |
145 |
– |
* offer(null) throws NPE |
146 |
– |
*/ |
147 |
– |
public void testOfferNull() { |
148 |
– |
try { |
149 |
– |
LinkedBlockingQueue q = new LinkedBlockingQueue(1); |
150 |
– |
q.offer(null); |
151 |
– |
shouldThrow(); |
152 |
– |
} catch (NullPointerException success) { } |
153 |
– |
} |
154 |
– |
|
155 |
– |
/** |
156 |
– |
* add(null) throws NPE |
157 |
– |
*/ |
158 |
– |
public void testAddNull() { |
159 |
– |
try { |
160 |
– |
LinkedBlockingQueue q = new LinkedBlockingQueue(1); |
161 |
– |
q.add(null); |
162 |
– |
shouldThrow(); |
163 |
– |
} catch (NullPointerException success) { } |
164 |
– |
} |
165 |
– |
|
166 |
– |
/** |
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 |
< |
* add succeeds if not full; throws ISE if full |
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))); |
183 |
< |
} |
184 |
< |
assertEquals(0, q.remainingCapacity()); |
185 |
< |
q.add(new Integer(SIZE)); |
186 |
< |
} catch (IllegalStateException success){ |
187 |
< |
} |
188 |
< |
} |
189 |
< |
|
190 |
< |
/** |
191 |
< |
* addAll(null) throws NPE |
192 |
< |
*/ |
193 |
< |
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); |
196 |
< |
q.addAll(null); |
187 |
> |
q.add(new Item(SIZE)); |
188 |
|
shouldThrow(); |
189 |
< |
} |
199 |
< |
catch (NullPointerException success) {} |
189 |
> |
} catch (IllegalStateException success) {} |
190 |
|
} |
191 |
|
|
192 |
|
/** |
193 |
< |
* addAll(this) throws IAE |
193 |
> |
* addAll(this) throws IllegalArgumentException |
194 |
|
*/ |
195 |
|
public void testAddAllSelf() { |
196 |
+ |
LinkedBlockingQueue<Item> q = populatedQueue(SIZE); |
197 |
|
try { |
207 |
– |
LinkedBlockingQueue q = populatedQueue(SIZE); |
198 |
|
q.addAll(q); |
199 |
|
shouldThrow(); |
200 |
< |
} |
211 |
< |
catch (IllegalArgumentException success) {} |
200 |
> |
} catch (IllegalArgumentException success) {} |
201 |
|
} |
202 |
|
|
203 |
|
/** |
215 |
– |
* addAll of a collection with null elements throws NPE |
216 |
– |
*/ |
217 |
– |
public void testAddAll2() { |
218 |
– |
try { |
219 |
– |
LinkedBlockingQueue q = new LinkedBlockingQueue(SIZE); |
220 |
– |
Integer[] ints = new Integer[SIZE]; |
221 |
– |
q.addAll(Arrays.asList(ints)); |
222 |
– |
shouldThrow(); |
223 |
– |
} |
224 |
– |
catch (NullPointerException success) {} |
225 |
– |
} |
226 |
– |
/** |
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); |
233 |
< |
Integer[] ints = new Integer[SIZE]; |
234 |
< |
for (int i = 0; i < SIZE-1; ++i) |
235 |
< |
ints[i] = new Integer(i); |
236 |
< |
q.addAll(Arrays.asList(ints)); |
212 |
> |
q.addAll(elements); |
213 |
|
shouldThrow(); |
214 |
< |
} |
239 |
< |
catch (NullPointerException success) {} |
214 |
> |
} catch (NullPointerException success) {} |
215 |
|
} |
216 |
+ |
|
217 |
|
/** |
218 |
< |
* addAll throws ISE if not enough room |
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); |
247 |
< |
Integer[] ints = new Integer[SIZE]; |
248 |
< |
for (int i = 0; i < SIZE; ++i) |
249 |
< |
ints[i] = new Integer(i); |
250 |
< |
q.addAll(Arrays.asList(ints)); |
225 |
> |
q.addAll(elements); |
226 |
|
shouldThrow(); |
227 |
< |
} |
253 |
< |
catch (IllegalStateException success) {} |
227 |
> |
} catch (IllegalStateException success) {} |
228 |
|
} |
229 |
+ |
|
230 |
|
/** |
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))); |
266 |
< |
assertTrue(q.addAll(Arrays.asList(ints))); |
267 |
< |
for (int i = 0; i < SIZE; ++i) |
268 |
< |
assertEquals(ints[i], q.poll()); |
269 |
< |
} |
270 |
< |
finally {} |
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 |
|
/** |
274 |
– |
* put(null) throws NPE |
275 |
– |
*/ |
276 |
– |
public void testPutNull() { |
277 |
– |
try { |
278 |
– |
LinkedBlockingQueue q = new LinkedBlockingQueue(SIZE); |
279 |
– |
q.put(null); |
280 |
– |
shouldThrow(); |
281 |
– |
} |
282 |
– |
catch (NullPointerException success){ |
283 |
– |
} |
284 |
– |
catch (InterruptedException ie) { |
285 |
– |
unexpectedException(); |
286 |
– |
} |
287 |
– |
} |
288 |
– |
|
289 |
– |
/** |
244 |
|
* all elements successfully put are contained |
245 |
|
*/ |
246 |
< |
public void testPut() { |
247 |
< |
try { |
248 |
< |
LinkedBlockingQueue q = new LinkedBlockingQueue(SIZE); |
249 |
< |
for (int i = 0; i < SIZE; ++i) { |
250 |
< |
Integer I = new Integer(i); |
251 |
< |
q.put(I); |
298 |
< |
assertTrue(q.contains(I)); |
299 |
< |
} |
300 |
< |
assertEquals(0, q.remainingCapacity()); |
301 |
< |
} |
302 |
< |
catch (InterruptedException ie) { |
303 |
< |
unexpectedException(); |
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 |
|
* put blocks interruptibly if full |
258 |
|
*/ |
259 |
< |
public void testBlockingPut() { |
260 |
< |
Thread t = new Thread(new Runnable() { |
261 |
< |
public void run() { |
262 |
< |
int added = 0; |
263 |
< |
try { |
264 |
< |
LinkedBlockingQueue q = new LinkedBlockingQueue(SIZE); |
265 |
< |
for (int i = 0; i < SIZE; ++i) { |
266 |
< |
q.put(new Integer(i)); |
267 |
< |
++added; |
268 |
< |
} |
269 |
< |
q.put(new Integer(SIZE)); |
270 |
< |
threadShouldThrow(); |
271 |
< |
} catch (InterruptedException ie){ |
272 |
< |
threadAssertEquals(added, SIZE); |
273 |
< |
} |
274 |
< |
}}); |
275 |
< |
t.start(); |
276 |
< |
try { |
277 |
< |
Thread.sleep(SHORT_DELAY_MS); |
278 |
< |
t.interrupt(); |
279 |
< |
t.join(); |
280 |
< |
} |
281 |
< |
catch (InterruptedException ie) { |
282 |
< |
unexpectedException(); |
283 |
< |
} |
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 |
< |
* put blocks waiting for take when full |
294 |
< |
*/ |
295 |
< |
public void testPutWithTake() { |
296 |
< |
final LinkedBlockingQueue q = new LinkedBlockingQueue(2); |
297 |
< |
Thread t = new Thread(new Runnable() { |
298 |
< |
public void run() { |
299 |
< |
int added = 0; |
300 |
< |
try { |
301 |
< |
q.put(new Object()); |
302 |
< |
++added; |
303 |
< |
q.put(new Object()); |
304 |
< |
++added; |
305 |
< |
q.put(new Object()); |
306 |
< |
++added; |
307 |
< |
q.put(new Object()); |
308 |
< |
++added; |
309 |
< |
threadShouldThrow(); |
310 |
< |
} catch (InterruptedException e){ |
311 |
< |
threadAssertTrue(added >= 2); |
312 |
< |
} |
313 |
< |
} |
314 |
< |
}); |
315 |
< |
try { |
316 |
< |
t.start(); |
317 |
< |
Thread.sleep(SHORT_DELAY_MS); |
318 |
< |
q.take(); |
319 |
< |
t.interrupt(); |
320 |
< |
t.join(); |
321 |
< |
} catch (Exception e){ |
322 |
< |
unexpectedException(); |
323 |
< |
} |
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 |
|
* timed offer times out if full and elements not taken |
335 |
|
*/ |
336 |
|
public void testTimedOffer() { |
337 |
< |
final LinkedBlockingQueue q = new LinkedBlockingQueue(2); |
338 |
< |
Thread t = new Thread(new Runnable() { |
339 |
< |
public void run() { |
340 |
< |
try { |
341 |
< |
q.put(new Object()); |
342 |
< |
q.put(new Object()); |
343 |
< |
threadAssertFalse(q.offer(new Object(), SHORT_DELAY_MS, TimeUnit.MILLISECONDS)); |
344 |
< |
q.offer(new Object(), LONG_DELAY_MS, TimeUnit.MILLISECONDS); |
345 |
< |
threadShouldThrow(); |
346 |
< |
} catch (InterruptedException success){} |
347 |
< |
} |
348 |
< |
}); |
349 |
< |
|
350 |
< |
try { |
351 |
< |
t.start(); |
352 |
< |
Thread.sleep(SMALL_DELAY_MS); |
353 |
< |
t.interrupt(); |
354 |
< |
t.join(); |
355 |
< |
} catch (Exception e){ |
356 |
< |
unexpectedException(); |
357 |
< |
} |
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 |
|
* take retrieves elements in FIFO order |
371 |
|
*/ |
372 |
< |
public void testTake() { |
373 |
< |
try { |
374 |
< |
LinkedBlockingQueue q = populatedQueue(SIZE); |
375 |
< |
for (int i = 0; i < SIZE; ++i) { |
405 |
< |
assertEquals(i, ((Integer)q.take()).intValue()); |
406 |
< |
} |
407 |
< |
} catch (InterruptedException e){ |
408 |
< |
unexpectedException(); |
409 |
< |
} |
410 |
< |
} |
411 |
< |
|
412 |
< |
/** |
413 |
< |
* take blocks interruptibly when empty |
414 |
< |
*/ |
415 |
< |
public void testTakeFromEmpty() { |
416 |
< |
final LinkedBlockingQueue q = new LinkedBlockingQueue(2); |
417 |
< |
Thread t = new Thread(new Runnable() { |
418 |
< |
public void run() { |
419 |
< |
try { |
420 |
< |
q.take(); |
421 |
< |
threadShouldThrow(); |
422 |
< |
} catch (InterruptedException success){ } |
423 |
< |
} |
424 |
< |
}); |
425 |
< |
try { |
426 |
< |
t.start(); |
427 |
< |
Thread.sleep(SHORT_DELAY_MS); |
428 |
< |
t.interrupt(); |
429 |
< |
t.join(); |
430 |
< |
} catch (Exception e){ |
431 |
< |
unexpectedException(); |
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() { |
383 |
< |
Thread t = new Thread(new Runnable() { |
384 |
< |
public void run() { |
385 |
< |
try { |
386 |
< |
LinkedBlockingQueue q = populatedQueue(SIZE); |
387 |
< |
for (int i = 0; i < SIZE; ++i) { |
444 |
< |
assertEquals(i, ((Integer)q.take()).intValue()); |
445 |
< |
} |
446 |
< |
q.take(); |
447 |
< |
threadShouldThrow(); |
448 |
< |
} catch (InterruptedException success){ |
449 |
< |
} |
450 |
< |
}}); |
451 |
< |
t.start(); |
452 |
< |
try { |
453 |
< |
Thread.sleep(SHORT_DELAY_MS); |
454 |
< |
t.interrupt(); |
455 |
< |
t.join(); |
456 |
< |
} |
457 |
< |
catch (InterruptedException ie) { |
458 |
< |
unexpectedException(); |
459 |
< |
} |
460 |
< |
} |
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 |
|
* 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 |
< |
* timed pool with zero timeout succeeds when non-empty, else times out |
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 |
< |
} |
483 |
< |
assertNull(q.poll(0, TimeUnit.MILLISECONDS)); |
484 |
< |
} catch (InterruptedException e){ |
485 |
< |
unexpectedException(); |
486 |
< |
} |
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 |
< |
* timed pool with nonzero timeout succeeds when non-empty, else times out |
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 |
< |
} |
441 |
< |
assertNull(q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS)); |
442 |
< |
} catch (InterruptedException e){ |
443 |
< |
unexpectedException(); |
444 |
< |
} |
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 |
|
* Interrupted timed poll throws InterruptedException instead of |
450 |
|
* returning timeout status |
451 |
|
*/ |
452 |
< |
public void testInterruptedTimedPoll() { |
453 |
< |
Thread t = new Thread(new Runnable() { |
454 |
< |
public void run() { |
455 |
< |
try { |
456 |
< |
LinkedBlockingQueue q = populatedQueue(SIZE); |
457 |
< |
for (int i = 0; i < SIZE; ++i) { |
458 |
< |
threadAssertEquals(i, ((Integer)q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS)).intValue()); |
515 |
< |
} |
516 |
< |
threadAssertNull(q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS)); |
517 |
< |
} catch (InterruptedException success){ |
518 |
< |
} |
519 |
< |
}}); |
520 |
< |
t.start(); |
521 |
< |
try { |
522 |
< |
Thread.sleep(SHORT_DELAY_MS); |
523 |
< |
t.interrupt(); |
524 |
< |
t.join(); |
525 |
< |
} |
526 |
< |
catch (InterruptedException ie) { |
527 |
< |
unexpectedException(); |
528 |
< |
} |
529 |
< |
} |
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 |
< |
/** |
461 |
< |
* timed poll before a delayed offer fails; after offer succeeds; |
462 |
< |
* on interruption throws |
463 |
< |
*/ |
464 |
< |
public void testTimedPollWithOffer() { |
465 |
< |
final LinkedBlockingQueue q = new LinkedBlockingQueue(2); |
466 |
< |
Thread t = new Thread(new Runnable() { |
467 |
< |
public void run() { |
468 |
< |
try { |
469 |
< |
threadAssertNull(q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS)); |
470 |
< |
q.poll(LONG_DELAY_MS, TimeUnit.MILLISECONDS); |
471 |
< |
q.poll(LONG_DELAY_MS, TimeUnit.MILLISECONDS); |
472 |
< |
threadShouldThrow(); |
473 |
< |
} catch (InterruptedException success) { } |
474 |
< |
} |
475 |
< |
}); |
476 |
< |
try { |
477 |
< |
t.start(); |
478 |
< |
Thread.sleep(SMALL_DELAY_MS); |
479 |
< |
assertTrue(q.offer(zero, SHORT_DELAY_MS, TimeUnit.MILLISECONDS)); |
480 |
< |
t.interrupt(); |
552 |
< |
t.join(); |
553 |
< |
} catch (Exception e){ |
554 |
< |
unexpectedException(); |
555 |
< |
} |
556 |
< |
} |
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 |
|
* 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 |
|
* 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 |
< |
} |
585 |
< |
catch (NoSuchElementException success) {} |
508 |
> |
} catch (NoSuchElementException success) {} |
509 |
|
} |
510 |
|
|
511 |
|
/** |
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){ |
600 |
< |
} |
522 |
> |
} catch (NoSuchElementException success) {} |
523 |
|
} |
524 |
|
|
525 |
|
/** |
526 |
< |
* remove(x) removes x and returns true if present |
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))); |
614 |
< |
} |
615 |
< |
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 |
|
* 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 |
|
|
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)); |
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 |
|
} |
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 |
|
} |
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()); |
690 |
< |
assertFalse(q.contains(I)); |
609 |
> |
mustNotContain(q, p.remove()); |
610 |
|
} |
611 |
|
} |
612 |
|
} |
613 |
|
|
614 |
|
/** |
615 |
< |
* toArray contains all elements |
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){ |
705 |
< |
unexpectedException(); |
706 |
< |
} |
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 |
< |
* toArray(a) contains all elements |
627 |
> |
* toArray(a) contains all elements in FIFO order |
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){ |
720 |
< |
unexpectedException(); |
721 |
< |
} |
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 |
< |
* toArray(null) throws NPE |
640 |
> |
* toArray(incompatible array type) throws ArrayStoreException |
641 |
|
*/ |
642 |
< |
public void testToArray_BadArg() { |
643 |
< |
try { |
644 |
< |
LinkedBlockingQueue q = populatedQueue(SIZE); |
645 |
< |
Object o[] = q.toArray(null); |
646 |
< |
shouldThrow(); |
647 |
< |
} catch(NullPointerException success){} |
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 |
< |
* toArray with incompatible array type throws CCE |
652 |
> |
* iterator iterates through all elements |
653 |
|
*/ |
654 |
< |
public void testToArray1_BadArg() { |
655 |
< |
try { |
656 |
< |
LinkedBlockingQueue q = populatedQueue(SIZE); |
657 |
< |
Object o[] = q.toArray(new String[10] ); |
658 |
< |
shouldThrow(); |
659 |
< |
} catch(ArrayStoreException success){} |
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 |
> |
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 |
|
|
746 |
– |
|
670 |
|
/** |
671 |
< |
* iterator iterates through all elements |
671 |
> |
* iterator of empty collection has no elements |
672 |
|
*/ |
673 |
< |
public void testIterator() { |
674 |
< |
LinkedBlockingQueue q = populatedQueue(SIZE); |
752 |
< |
Iterator it = q.iterator(); |
753 |
< |
try { |
754 |
< |
while(it.hasNext()){ |
755 |
< |
assertEquals(it.next(), q.take()); |
756 |
< |
} |
757 |
< |
} catch (InterruptedException e){ |
758 |
< |
unexpectedException(); |
759 |
< |
} |
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 q = new LinkedBlockingQueue(3); |
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 |
< |
Iterator it = q.iterator(); |
686 |
> |
Iterator<? extends Item> it = q.iterator(); |
687 |
|
it.next(); |
688 |
|
it.remove(); |
689 |
< |
|
689 |
> |
|
690 |
|
it = q.iterator(); |
691 |
< |
assertEquals(it.next(), one); |
692 |
< |
assertEquals(it.next(), three); |
691 |
> |
assertSame(it.next(), one); |
692 |
> |
assertSame(it.next(), three); |
693 |
|
assertFalse(it.hasNext()); |
694 |
|
} |
695 |
|
|
781 |
– |
|
696 |
|
/** |
697 |
|
* iterator ordering is FIFO |
698 |
|
*/ |
699 |
|
public void testIteratorOrdering() { |
700 |
< |
final LinkedBlockingQueue q = new LinkedBlockingQueue(3); |
700 |
> |
final LinkedBlockingQueue<Item> q = new LinkedBlockingQueue<>(3); |
701 |
|
q.add(one); |
702 |
|
q.add(two); |
703 |
|
q.add(three); |
704 |
< |
assertEquals(0, q.remainingCapacity()); |
704 |
> |
mustEqual(0, q.remainingCapacity()); |
705 |
|
int k = 0; |
706 |
< |
for (Iterator it = q.iterator(); it.hasNext();) { |
707 |
< |
int i = ((Integer)(it.next())).intValue(); |
794 |
< |
assertEquals(++k, i); |
706 |
> |
for (Iterator<? extends Item> it = q.iterator(); it.hasNext();) { |
707 |
> |
mustEqual(++k, it.next()); |
708 |
|
} |
709 |
< |
assertEquals(3, k); |
709 |
> |
mustEqual(3, k); |
710 |
|
} |
711 |
|
|
712 |
|
/** |
713 |
|
* Modifications do not cause iterators to fail |
714 |
|
*/ |
715 |
< |
public void testWeaklyConsistentIteration () { |
716 |
< |
final LinkedBlockingQueue q = new LinkedBlockingQueue(3); |
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 |
< |
try { |
721 |
< |
for (Iterator it = q.iterator(); it.hasNext();) { |
722 |
< |
q.remove(); |
810 |
< |
it.next(); |
811 |
< |
} |
812 |
< |
} |
813 |
< |
catch (ConcurrentModificationException e) { |
814 |
< |
unexpectedException(); |
720 |
> |
for (Iterator<? extends Item> it = q.iterator(); it.hasNext();) { |
721 |
> |
q.remove(); |
722 |
> |
it.next(); |
723 |
|
} |
724 |
< |
assertEquals(0, q.size()); |
724 |
> |
mustEqual(0, q.size()); |
725 |
|
} |
726 |
|
|
819 |
– |
|
727 |
|
/** |
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 |
< |
} |
830 |
< |
|
736 |
> |
} |
737 |
|
|
738 |
|
/** |
739 |
|
* offer transfers elements across Executor tasks |
740 |
|
*/ |
741 |
|
public void testOfferInExecutor() { |
742 |
< |
final LinkedBlockingQueue q = new LinkedBlockingQueue(2); |
742 |
> |
final LinkedBlockingQueue<Item> q = new LinkedBlockingQueue<>(2); |
743 |
|
q.add(one); |
744 |
|
q.add(two); |
745 |
< |
ExecutorService executor = Executors.newFixedThreadPool(2); |
746 |
< |
executor.execute(new Runnable() { |
747 |
< |
public void run() { |
748 |
< |
threadAssertFalse(q.offer(three)); |
749 |
< |
try { |
750 |
< |
threadAssertTrue(q.offer(three, MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS)); |
751 |
< |
threadAssertEquals(0, q.remainingCapacity()); |
752 |
< |
} |
753 |
< |
catch (InterruptedException e) { |
754 |
< |
threadUnexpectedException(); |
849 |
< |
} |
850 |
< |
} |
851 |
< |
}); |
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 |
< |
executor.execute(new Runnable() { |
757 |
< |
public void run() { |
758 |
< |
try { |
759 |
< |
Thread.sleep(SMALL_DELAY_MS); |
760 |
< |
threadAssertEquals(one, q.take()); |
761 |
< |
} |
859 |
< |
catch (InterruptedException e) { |
860 |
< |
threadUnexpectedException(); |
861 |
< |
} |
862 |
< |
} |
863 |
< |
}); |
864 |
< |
|
865 |
< |
joinPool(executor); |
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 |
< |
* poll retrieves elements across Executor threads |
765 |
> |
* timed poll retrieves elements across Executor threads |
766 |
|
*/ |
767 |
|
public void testPollInExecutor() { |
768 |
< |
final LinkedBlockingQueue q = new LinkedBlockingQueue(2); |
769 |
< |
ExecutorService executor = Executors.newFixedThreadPool(2); |
770 |
< |
executor.execute(new Runnable() { |
771 |
< |
public void run() { |
772 |
< |
threadAssertNull(q.poll()); |
773 |
< |
try { |
774 |
< |
threadAssertTrue(null != q.poll(MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS)); |
775 |
< |
threadAssertTrue(q.isEmpty()); |
776 |
< |
} |
777 |
< |
catch (InterruptedException e) { |
778 |
< |
threadUnexpectedException(); |
883 |
< |
} |
884 |
< |
} |
885 |
< |
}); |
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 |
< |
executor.execute(new Runnable() { |
781 |
< |
public void run() { |
782 |
< |
try { |
890 |
< |
Thread.sleep(SMALL_DELAY_MS); |
780 |
> |
executor.execute(new CheckedRunnable() { |
781 |
> |
public void realRun() throws InterruptedException { |
782 |
> |
threadsStarted.await(); |
783 |
|
q.put(one); |
784 |
< |
} |
893 |
< |
catch (InterruptedException e) { |
894 |
< |
threadUnexpectedException(); |
895 |
< |
} |
896 |
< |
} |
897 |
< |
}); |
898 |
< |
|
899 |
< |
joinPool(executor); |
900 |
< |
} |
901 |
< |
|
902 |
< |
/** |
903 |
< |
* A deserialized serialized queue has same elements in same order |
904 |
< |
*/ |
905 |
< |
public void testSerialization() { |
906 |
< |
LinkedBlockingQueue q = populatedQueue(SIZE); |
907 |
< |
|
908 |
< |
try { |
909 |
< |
ByteArrayOutputStream bout = new ByteArrayOutputStream(10000); |
910 |
< |
ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout)); |
911 |
< |
out.writeObject(q); |
912 |
< |
out.close(); |
913 |
< |
|
914 |
< |
ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray()); |
915 |
< |
ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin)); |
916 |
< |
LinkedBlockingQueue r = (LinkedBlockingQueue)in.readObject(); |
917 |
< |
assertEquals(q.size(), r.size()); |
918 |
< |
while (!q.isEmpty()) |
919 |
< |
assertEquals(q.remove(), r.remove()); |
920 |
< |
} catch(Exception e){ |
921 |
< |
unexpectedException(); |
922 |
< |
} |
923 |
< |
} |
924 |
< |
|
925 |
< |
/** |
926 |
< |
* drainTo(null) throws NPE |
927 |
< |
*/ |
928 |
< |
public void testDrainToNull() { |
929 |
< |
LinkedBlockingQueue q = populatedQueue(SIZE); |
930 |
< |
try { |
931 |
< |
q.drainTo(null); |
932 |
< |
shouldThrow(); |
933 |
< |
} catch(NullPointerException success) { |
784 |
> |
}}); |
785 |
|
} |
786 |
|
} |
787 |
|
|
788 |
|
/** |
789 |
< |
* drainTo(this) throws IAE |
790 |
< |
*/ |
791 |
< |
public void testDrainToSelf() { |
792 |
< |
LinkedBlockingQueue q = populatedQueue(SIZE); |
793 |
< |
try { |
794 |
< |
q.drainTo(q); |
795 |
< |
shouldThrow(); |
796 |
< |
} catch(IllegalArgumentException success) { |
789 |
> |
* A deserialized/reserialized queue has same elements in same order |
790 |
> |
*/ |
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 |
|
/** |
807 |
|
* drainTo(c) empties queue into another collection c |
808 |
< |
*/ |
808 |
> |
*/ |
809 |
|
public void testDrainTo() { |
810 |
< |
LinkedBlockingQueue q = populatedQueue(SIZE); |
811 |
< |
ArrayList l = new ArrayList(); |
810 |
> |
LinkedBlockingQueue<Item> q = populatedQueue(SIZE); |
811 |
> |
ArrayList<Item> l = new ArrayList<>(); |
812 |
|
q.drainTo(l); |
813 |
< |
assertEquals(q.size(), 0); |
814 |
< |
assertEquals(l.size(), SIZE); |
815 |
< |
for (int i = 0; i < SIZE; ++i) |
816 |
< |
assertEquals(l.get(i), new Integer(i)); |
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 |
< |
assertTrue(q.contains(zero)); |
821 |
< |
assertTrue(q.contains(one)); |
820 |
> |
mustContain(q, zero); |
821 |
> |
mustContain(q, one); |
822 |
|
l.clear(); |
823 |
|
q.drainTo(l); |
824 |
< |
assertEquals(q.size(), 0); |
825 |
< |
assertEquals(l.size(), 2); |
826 |
< |
for (int i = 0; i < 2; ++i) |
827 |
< |
assertEquals(l.get(i), new Integer(i)); |
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() { |
834 |
< |
final LinkedBlockingQueue q = populatedQueue(SIZE); |
835 |
< |
Thread t = new Thread(new Runnable() { |
836 |
< |
public void run() { |
837 |
< |
try { |
838 |
< |
q.put(new Integer(SIZE+1)); |
982 |
< |
} catch (InterruptedException ie){ |
983 |
< |
threadUnexpectedException(); |
984 |
< |
} |
985 |
< |
} |
986 |
< |
}); |
987 |
< |
try { |
988 |
< |
t.start(); |
989 |
< |
ArrayList l = new ArrayList(); |
990 |
< |
q.drainTo(l); |
991 |
< |
assertTrue(l.size() >= SIZE); |
992 |
< |
for (int i = 0; i < SIZE; ++i) |
993 |
< |
assertEquals(l.get(i), new Integer(i)); |
994 |
< |
t.join(); |
995 |
< |
assertTrue(q.size() + l.size() >= SIZE); |
996 |
< |
} catch(Exception e){ |
997 |
< |
unexpectedException(); |
998 |
< |
} |
999 |
< |
} |
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 |
< |
/** |
841 |
< |
* drainTo(null, n) throws NPE |
842 |
< |
*/ |
843 |
< |
public void testDrainToNullN() { |
844 |
< |
LinkedBlockingQueue q = populatedQueue(SIZE); |
845 |
< |
try { |
846 |
< |
q.drainTo(null, 0); |
847 |
< |
shouldThrow(); |
1009 |
< |
} catch(NullPointerException success) { |
1010 |
< |
} |
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 |
|
/** |
851 |
< |
* drainTo(this, n) throws IAE |
852 |
< |
*/ |
853 |
< |
public void testDrainToSelfN() { |
854 |
< |
LinkedBlockingQueue q = populatedQueue(SIZE); |
855 |
< |
try { |
856 |
< |
q.drainTo(q, 0); |
857 |
< |
shouldThrow(); |
858 |
< |
} catch(IllegalArgumentException success) { |
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 |
< |
* drainTo(c, n) empties first max {n, size} elements of queue into c |
871 |
< |
*/ |
872 |
< |
public void testDrainToN() { |
873 |
< |
LinkedBlockingQueue q = new LinkedBlockingQueue(); |
874 |
< |
for (int i = 0; i < SIZE + 2; ++i) { |
875 |
< |
for(int j = 0; j < SIZE; j++) |
876 |
< |
assertTrue(q.offer(new Integer(j))); |
877 |
< |
ArrayList l = new ArrayList(); |
878 |
< |
q.drainTo(l, i); |
879 |
< |
int k = (i < SIZE)? i : SIZE; |
880 |
< |
assertEquals(l.size(), k); |
1037 |
< |
assertEquals(q.size(), SIZE-k); |
1038 |
< |
for (int j = 0; j < k; ++j) |
1039 |
< |
assertEquals(l.get(j), new Integer(j)); |
1040 |
< |
while (q.poll() != null) ; |
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 |
|
|