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/* |
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* Written by Doug Lea with assistance from members of JCP JSR-166 |
3 |
* Expert Group and released to the public domain, as explained at |
4 |
* http://creativecommons.org/licenses/publicdomain |
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*/ |
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|
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import junit.framework.*; |
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import java.util.*; |
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import java.util.concurrent.*; |
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import static java.util.concurrent.TimeUnit.MILLISECONDS; |
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import java.io.*; |
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|
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public class LinkedBlockingDequeTest extends JSR166TestCase { |
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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() { |
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return new TestSuite(LinkedBlockingDequeTest.class); |
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} |
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|
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/** |
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* Create a deque of given size containing consecutive |
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* Integers 0 ... n. |
25 |
*/ |
26 |
private LinkedBlockingDeque populatedDeque(int n) { |
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LinkedBlockingDeque q = new LinkedBlockingDeque(n); |
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assertTrue(q.isEmpty()); |
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for (int i = 0; i < n; i++) |
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assertTrue(q.offer(new Integer(i))); |
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assertFalse(q.isEmpty()); |
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assertEquals(0, q.remainingCapacity()); |
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assertEquals(n, q.size()); |
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return q; |
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} |
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|
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/** |
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* isEmpty is true before add, false after |
39 |
*/ |
40 |
public void testEmpty() { |
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LinkedBlockingDeque q = new LinkedBlockingDeque(); |
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assertTrue(q.isEmpty()); |
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q.add(new Integer(1)); |
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assertFalse(q.isEmpty()); |
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q.add(new Integer(2)); |
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q.removeFirst(); |
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q.removeFirst(); |
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assertTrue(q.isEmpty()); |
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} |
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|
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/** |
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* size changes when elements added and removed |
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*/ |
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public void testSize() { |
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LinkedBlockingDeque q = populatedDeque(SIZE); |
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for (int i = 0; i < SIZE; ++i) { |
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assertEquals(SIZE-i, q.size()); |
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q.removeFirst(); |
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} |
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for (int i = 0; i < SIZE; ++i) { |
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assertEquals(i, q.size()); |
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q.add(new Integer(i)); |
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} |
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} |
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|
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/** |
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* offer(null) throws NPE |
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*/ |
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public void testOfferFirstNull() { |
70 |
try { |
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LinkedBlockingDeque q = new LinkedBlockingDeque(); |
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q.offerFirst(null); |
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shouldThrow(); |
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} catch (NullPointerException success) {} |
75 |
} |
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|
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/** |
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* OfferFirst succeeds |
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*/ |
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public void testOfferFirst() { |
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LinkedBlockingDeque q = new LinkedBlockingDeque(); |
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assertTrue(q.offerFirst(new Integer(0))); |
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assertTrue(q.offerFirst(new Integer(1))); |
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} |
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|
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/** |
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* OfferLast succeeds |
88 |
*/ |
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public void testOfferLast() { |
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LinkedBlockingDeque q = new LinkedBlockingDeque(); |
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assertTrue(q.offerLast(new Integer(0))); |
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assertTrue(q.offerLast(new Integer(1))); |
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} |
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|
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/** |
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* pollFirst succeeds unless empty |
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*/ |
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public void testPollFirst() { |
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LinkedBlockingDeque q = populatedDeque(SIZE); |
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for (int i = 0; i < SIZE; ++i) { |
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assertEquals(i, ((Integer)q.pollFirst()).intValue()); |
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} |
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assertNull(q.pollFirst()); |
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} |
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|
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/** |
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* pollLast succeeds unless empty |
108 |
*/ |
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public void testPollLast() { |
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LinkedBlockingDeque q = populatedDeque(SIZE); |
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for (int i = SIZE-1; i >= 0; --i) { |
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assertEquals(i, ((Integer)q.pollLast()).intValue()); |
113 |
} |
114 |
assertNull(q.pollLast()); |
115 |
} |
116 |
|
117 |
/** |
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* peekFirst returns next element, or null if empty |
119 |
*/ |
120 |
public void testPeekFirst() { |
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LinkedBlockingDeque q = populatedDeque(SIZE); |
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for (int i = 0; i < SIZE; ++i) { |
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assertEquals(i, ((Integer)q.peekFirst()).intValue()); |
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q.pollFirst(); |
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assertTrue(q.peekFirst() == null || |
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i != ((Integer)q.peekFirst()).intValue()); |
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} |
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assertNull(q.peekFirst()); |
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} |
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|
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/** |
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* peek returns next element, or null if empty |
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*/ |
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public void testPeek() { |
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LinkedBlockingDeque q = populatedDeque(SIZE); |
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for (int i = 0; i < SIZE; ++i) { |
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assertEquals(i, ((Integer)q.peek()).intValue()); |
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q.pollFirst(); |
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assertTrue(q.peek() == null || |
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i != ((Integer)q.peek()).intValue()); |
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} |
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assertNull(q.peek()); |
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} |
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|
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/** |
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* peekLast returns next element, or null if empty |
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*/ |
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public void testPeekLast() { |
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LinkedBlockingDeque q = populatedDeque(SIZE); |
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for (int i = SIZE-1; i >= 0; --i) { |
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assertEquals(i, ((Integer)q.peekLast()).intValue()); |
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q.pollLast(); |
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assertTrue(q.peekLast() == null || |
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i != ((Integer)q.peekLast()).intValue()); |
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} |
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assertNull(q.peekLast()); |
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} |
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|
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/** |
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* getFirst returns next getFirst, or throws NSEE if empty |
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*/ |
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public void testFirstElement() { |
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LinkedBlockingDeque q = populatedDeque(SIZE); |
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for (int i = 0; i < SIZE; ++i) { |
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assertEquals(i, ((Integer)q.getFirst()).intValue()); |
166 |
q.pollFirst(); |
167 |
} |
168 |
try { |
169 |
q.getFirst(); |
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shouldThrow(); |
171 |
} catch (NoSuchElementException success) {} |
172 |
assertNull(q.peekFirst()); |
173 |
} |
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|
175 |
/** |
176 |
* getLast returns next element, or throws NSEE if empty |
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*/ |
178 |
public void testLastElement() { |
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LinkedBlockingDeque q = populatedDeque(SIZE); |
180 |
for (int i = SIZE-1; i >= 0; --i) { |
181 |
assertEquals(i, ((Integer)q.getLast()).intValue()); |
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q.pollLast(); |
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} |
184 |
try { |
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q.getLast(); |
186 |
shouldThrow(); |
187 |
} catch (NoSuchElementException success) {} |
188 |
assertNull(q.peekLast()); |
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} |
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|
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/** |
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* removeFirst removes next element, or throws NSEE if empty |
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*/ |
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public void testRemoveFirst() { |
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LinkedBlockingDeque q = populatedDeque(SIZE); |
196 |
for (int i = 0; i < SIZE; ++i) { |
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assertEquals(i, ((Integer)q.removeFirst()).intValue()); |
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} |
199 |
try { |
200 |
q.removeFirst(); |
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shouldThrow(); |
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} catch (NoSuchElementException success) {} |
203 |
assertNull(q.peekFirst()); |
204 |
} |
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|
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/** |
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* removeLast removes last element, or throws NSEE if empty |
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*/ |
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public void testRemoveLast() { |
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LinkedBlockingDeque q = populatedDeque(SIZE); |
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for (int i = SIZE - 1; i >= 0; --i) { |
212 |
assertEquals(i, ((Integer)q.removeLast()).intValue()); |
213 |
} |
214 |
try { |
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q.removeLast(); |
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shouldThrow(); |
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} catch (NoSuchElementException success) {} |
218 |
assertNull(q.peekLast()); |
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} |
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|
221 |
/** |
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* remove removes next element, or throws NSEE if empty |
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*/ |
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public void testRemove() { |
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LinkedBlockingDeque q = populatedDeque(SIZE); |
226 |
for (int i = 0; i < SIZE; ++i) { |
227 |
assertEquals(i, ((Integer)q.remove()).intValue()); |
228 |
} |
229 |
try { |
230 |
q.remove(); |
231 |
shouldThrow(); |
232 |
} catch (NoSuchElementException success) {} |
233 |
} |
234 |
|
235 |
/** |
236 |
* removeFirstOccurrence(x) removes x and returns true if present |
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*/ |
238 |
public void testRemoveFirstOccurrence() { |
239 |
LinkedBlockingDeque q = populatedDeque(SIZE); |
240 |
for (int i = 1; i < SIZE; i+=2) { |
241 |
assertTrue(q.removeFirstOccurrence(new Integer(i))); |
242 |
} |
243 |
for (int i = 0; i < SIZE; i+=2) { |
244 |
assertTrue(q.removeFirstOccurrence(new Integer(i))); |
245 |
assertFalse(q.removeFirstOccurrence(new Integer(i+1))); |
246 |
} |
247 |
assertTrue(q.isEmpty()); |
248 |
} |
249 |
|
250 |
/** |
251 |
* removeLastOccurrence(x) removes x and returns true if present |
252 |
*/ |
253 |
public void testRemoveLastOccurrence() { |
254 |
LinkedBlockingDeque q = populatedDeque(SIZE); |
255 |
for (int i = 1; i < SIZE; i+=2) { |
256 |
assertTrue(q.removeLastOccurrence(new Integer(i))); |
257 |
} |
258 |
for (int i = 0; i < SIZE; i+=2) { |
259 |
assertTrue(q.removeLastOccurrence(new Integer(i))); |
260 |
assertFalse(q.removeLastOccurrence(new Integer(i+1))); |
261 |
} |
262 |
assertTrue(q.isEmpty()); |
263 |
} |
264 |
|
265 |
/** |
266 |
* peekFirst returns element inserted with addFirst |
267 |
*/ |
268 |
public void testAddFirst() { |
269 |
LinkedBlockingDeque q = populatedDeque(3); |
270 |
q.pollLast(); |
271 |
q.addFirst(four); |
272 |
assertEquals(four,q.peekFirst()); |
273 |
} |
274 |
|
275 |
/** |
276 |
* peekLast returns element inserted with addLast |
277 |
*/ |
278 |
public void testAddLast() { |
279 |
LinkedBlockingDeque q = populatedDeque(3); |
280 |
q.pollLast(); |
281 |
q.addLast(four); |
282 |
assertEquals(four,q.peekLast()); |
283 |
} |
284 |
|
285 |
|
286 |
/** |
287 |
* A new deque has the indicated capacity, or Integer.MAX_VALUE if |
288 |
* none given |
289 |
*/ |
290 |
public void testConstructor1() { |
291 |
assertEquals(SIZE, new LinkedBlockingDeque(SIZE).remainingCapacity()); |
292 |
assertEquals(Integer.MAX_VALUE, new LinkedBlockingDeque().remainingCapacity()); |
293 |
} |
294 |
|
295 |
/** |
296 |
* Constructor throws IAE if capacity argument nonpositive |
297 |
*/ |
298 |
public void testConstructor2() { |
299 |
try { |
300 |
LinkedBlockingDeque q = new LinkedBlockingDeque(0); |
301 |
shouldThrow(); |
302 |
} catch (IllegalArgumentException success) {} |
303 |
} |
304 |
|
305 |
/** |
306 |
* Initializing from null Collection throws NPE |
307 |
*/ |
308 |
public void testConstructor3() { |
309 |
try { |
310 |
LinkedBlockingDeque q = new LinkedBlockingDeque(null); |
311 |
shouldThrow(); |
312 |
} catch (NullPointerException success) {} |
313 |
} |
314 |
|
315 |
/** |
316 |
* Initializing from Collection of null elements throws NPE |
317 |
*/ |
318 |
public void testConstructor4() { |
319 |
try { |
320 |
Integer[] ints = new Integer[SIZE]; |
321 |
LinkedBlockingDeque q = new LinkedBlockingDeque(Arrays.asList(ints)); |
322 |
shouldThrow(); |
323 |
} catch (NullPointerException success) {} |
324 |
} |
325 |
|
326 |
/** |
327 |
* Initializing from Collection with some null elements throws NPE |
328 |
*/ |
329 |
public void testConstructor5() { |
330 |
try { |
331 |
Integer[] ints = new Integer[SIZE]; |
332 |
for (int i = 0; i < SIZE-1; ++i) |
333 |
ints[i] = new Integer(i); |
334 |
LinkedBlockingDeque q = new LinkedBlockingDeque(Arrays.asList(ints)); |
335 |
shouldThrow(); |
336 |
} catch (NullPointerException success) {} |
337 |
} |
338 |
|
339 |
/** |
340 |
* Deque contains all elements of collection used to initialize |
341 |
*/ |
342 |
public void testConstructor6() { |
343 |
Integer[] ints = new Integer[SIZE]; |
344 |
for (int i = 0; i < SIZE; ++i) |
345 |
ints[i] = new Integer(i); |
346 |
LinkedBlockingDeque q = new LinkedBlockingDeque(Arrays.asList(ints)); |
347 |
for (int i = 0; i < SIZE; ++i) |
348 |
assertEquals(ints[i], q.poll()); |
349 |
} |
350 |
|
351 |
/** |
352 |
* Deque transitions from empty to full when elements added |
353 |
*/ |
354 |
public void testEmptyFull() { |
355 |
LinkedBlockingDeque q = new LinkedBlockingDeque(2); |
356 |
assertTrue(q.isEmpty()); |
357 |
assertEquals("should have room for 2", 2, q.remainingCapacity()); |
358 |
q.add(one); |
359 |
assertFalse(q.isEmpty()); |
360 |
q.add(two); |
361 |
assertFalse(q.isEmpty()); |
362 |
assertEquals(0, q.remainingCapacity()); |
363 |
assertFalse(q.offer(three)); |
364 |
} |
365 |
|
366 |
/** |
367 |
* remainingCapacity decreases on add, increases on remove |
368 |
*/ |
369 |
public void testRemainingCapacity() { |
370 |
LinkedBlockingDeque q = populatedDeque(SIZE); |
371 |
for (int i = 0; i < SIZE; ++i) { |
372 |
assertEquals(i, q.remainingCapacity()); |
373 |
assertEquals(SIZE-i, q.size()); |
374 |
q.remove(); |
375 |
} |
376 |
for (int i = 0; i < SIZE; ++i) { |
377 |
assertEquals(SIZE-i, q.remainingCapacity()); |
378 |
assertEquals(i, q.size()); |
379 |
q.add(new Integer(i)); |
380 |
} |
381 |
} |
382 |
|
383 |
/** |
384 |
* offer(null) throws NPE |
385 |
*/ |
386 |
public void testOfferNull() { |
387 |
try { |
388 |
LinkedBlockingDeque q = new LinkedBlockingDeque(1); |
389 |
q.offer(null); |
390 |
shouldThrow(); |
391 |
} catch (NullPointerException success) {} |
392 |
} |
393 |
|
394 |
/** |
395 |
* add(null) throws NPE |
396 |
*/ |
397 |
public void testAddNull() { |
398 |
try { |
399 |
LinkedBlockingDeque q = new LinkedBlockingDeque(1); |
400 |
q.add(null); |
401 |
shouldThrow(); |
402 |
} catch (NullPointerException success) {} |
403 |
} |
404 |
|
405 |
/** |
406 |
* push(null) throws NPE |
407 |
*/ |
408 |
public void testPushNull() { |
409 |
try { |
410 |
LinkedBlockingDeque q = new LinkedBlockingDeque(1); |
411 |
q.push(null); |
412 |
shouldThrow(); |
413 |
} catch (NullPointerException success) {} |
414 |
} |
415 |
|
416 |
/** |
417 |
* push succeeds if not full; throws ISE if full |
418 |
*/ |
419 |
public void testPush() { |
420 |
try { |
421 |
LinkedBlockingDeque q = new LinkedBlockingDeque(SIZE); |
422 |
for (int i = 0; i < SIZE; ++i) { |
423 |
Integer I = new Integer(i); |
424 |
q.push(I); |
425 |
assertEquals(I, q.peek()); |
426 |
} |
427 |
assertEquals(0, q.remainingCapacity()); |
428 |
q.push(new Integer(SIZE)); |
429 |
shouldThrow(); |
430 |
} catch (IllegalStateException success) {} |
431 |
} |
432 |
|
433 |
/** |
434 |
* peekFirst returns element inserted with push |
435 |
*/ |
436 |
public void testPushWithPeek() { |
437 |
LinkedBlockingDeque q = populatedDeque(3); |
438 |
q.pollLast(); |
439 |
q.push(four); |
440 |
assertEquals(four,q.peekFirst()); |
441 |
} |
442 |
|
443 |
|
444 |
/** |
445 |
* pop removes next element, or throws NSEE if empty |
446 |
*/ |
447 |
public void testPop() { |
448 |
LinkedBlockingDeque q = populatedDeque(SIZE); |
449 |
for (int i = 0; i < SIZE; ++i) { |
450 |
assertEquals(i, ((Integer)q.pop()).intValue()); |
451 |
} |
452 |
try { |
453 |
q.pop(); |
454 |
shouldThrow(); |
455 |
} catch (NoSuchElementException success) {} |
456 |
} |
457 |
|
458 |
|
459 |
/** |
460 |
* Offer succeeds if not full; fails if full |
461 |
*/ |
462 |
public void testOffer() { |
463 |
LinkedBlockingDeque q = new LinkedBlockingDeque(1); |
464 |
assertTrue(q.offer(zero)); |
465 |
assertFalse(q.offer(one)); |
466 |
} |
467 |
|
468 |
/** |
469 |
* add succeeds if not full; throws ISE if full |
470 |
*/ |
471 |
public void testAdd() { |
472 |
try { |
473 |
LinkedBlockingDeque q = new LinkedBlockingDeque(SIZE); |
474 |
for (int i = 0; i < SIZE; ++i) { |
475 |
assertTrue(q.add(new Integer(i))); |
476 |
} |
477 |
assertEquals(0, q.remainingCapacity()); |
478 |
q.add(new Integer(SIZE)); |
479 |
shouldThrow(); |
480 |
} catch (IllegalStateException success) {} |
481 |
} |
482 |
|
483 |
/** |
484 |
* addAll(null) throws NPE |
485 |
*/ |
486 |
public void testAddAll1() { |
487 |
try { |
488 |
LinkedBlockingDeque q = new LinkedBlockingDeque(1); |
489 |
q.addAll(null); |
490 |
shouldThrow(); |
491 |
} catch (NullPointerException success) {} |
492 |
} |
493 |
|
494 |
/** |
495 |
* addAll(this) throws IAE |
496 |
*/ |
497 |
public void testAddAllSelf() { |
498 |
try { |
499 |
LinkedBlockingDeque q = populatedDeque(SIZE); |
500 |
q.addAll(q); |
501 |
shouldThrow(); |
502 |
} catch (IllegalArgumentException success) {} |
503 |
} |
504 |
|
505 |
/** |
506 |
* addAll of a collection with null elements throws NPE |
507 |
*/ |
508 |
public void testAddAll2() { |
509 |
try { |
510 |
LinkedBlockingDeque q = new LinkedBlockingDeque(SIZE); |
511 |
Integer[] ints = new Integer[SIZE]; |
512 |
q.addAll(Arrays.asList(ints)); |
513 |
shouldThrow(); |
514 |
} catch (NullPointerException success) {} |
515 |
} |
516 |
/** |
517 |
* addAll of a collection with any null elements throws NPE after |
518 |
* possibly adding some elements |
519 |
*/ |
520 |
public void testAddAll3() { |
521 |
try { |
522 |
LinkedBlockingDeque q = new LinkedBlockingDeque(SIZE); |
523 |
Integer[] ints = new Integer[SIZE]; |
524 |
for (int i = 0; i < SIZE-1; ++i) |
525 |
ints[i] = new Integer(i); |
526 |
q.addAll(Arrays.asList(ints)); |
527 |
shouldThrow(); |
528 |
} catch (NullPointerException success) {} |
529 |
} |
530 |
/** |
531 |
* addAll throws ISE if not enough room |
532 |
*/ |
533 |
public void testAddAll4() { |
534 |
try { |
535 |
LinkedBlockingDeque q = new LinkedBlockingDeque(1); |
536 |
Integer[] ints = new Integer[SIZE]; |
537 |
for (int i = 0; i < SIZE; ++i) |
538 |
ints[i] = new Integer(i); |
539 |
q.addAll(Arrays.asList(ints)); |
540 |
shouldThrow(); |
541 |
} catch (IllegalStateException success) {} |
542 |
} |
543 |
/** |
544 |
* Deque contains all elements, in traversal order, of successful addAll |
545 |
*/ |
546 |
public void testAddAll5() { |
547 |
Integer[] empty = new Integer[0]; |
548 |
Integer[] ints = new Integer[SIZE]; |
549 |
for (int i = 0; i < SIZE; ++i) |
550 |
ints[i] = new Integer(i); |
551 |
LinkedBlockingDeque q = new LinkedBlockingDeque(SIZE); |
552 |
assertFalse(q.addAll(Arrays.asList(empty))); |
553 |
assertTrue(q.addAll(Arrays.asList(ints))); |
554 |
for (int i = 0; i < SIZE; ++i) |
555 |
assertEquals(ints[i], q.poll()); |
556 |
} |
557 |
|
558 |
|
559 |
/** |
560 |
* put(null) throws NPE |
561 |
*/ |
562 |
public void testPutNull() throws InterruptedException { |
563 |
try { |
564 |
LinkedBlockingDeque q = new LinkedBlockingDeque(SIZE); |
565 |
q.put(null); |
566 |
shouldThrow(); |
567 |
} catch (NullPointerException success) {} |
568 |
} |
569 |
|
570 |
/** |
571 |
* all elements successfully put are contained |
572 |
*/ |
573 |
public void testPut() throws InterruptedException { |
574 |
LinkedBlockingDeque q = new LinkedBlockingDeque(SIZE); |
575 |
for (int i = 0; i < SIZE; ++i) { |
576 |
Integer I = new Integer(i); |
577 |
q.put(I); |
578 |
assertTrue(q.contains(I)); |
579 |
} |
580 |
assertEquals(0, q.remainingCapacity()); |
581 |
} |
582 |
|
583 |
/** |
584 |
* put blocks interruptibly if full |
585 |
*/ |
586 |
public void testBlockingPut() throws InterruptedException { |
587 |
Thread t = new Thread(new CheckedRunnable() { |
588 |
public void realRun() { |
589 |
int added = 0; |
590 |
try { |
591 |
LinkedBlockingDeque q = new LinkedBlockingDeque(SIZE); |
592 |
for (int i = 0; i < SIZE; ++i) { |
593 |
q.put(new Integer(i)); |
594 |
++added; |
595 |
} |
596 |
q.put(new Integer(SIZE)); |
597 |
threadShouldThrow(); |
598 |
} catch (InterruptedException success) { |
599 |
threadAssertEquals(added, SIZE); |
600 |
} |
601 |
}}); |
602 |
|
603 |
t.start(); |
604 |
Thread.sleep(SHORT_DELAY_MS); |
605 |
t.interrupt(); |
606 |
t.join(); |
607 |
} |
608 |
|
609 |
/** |
610 |
* put blocks waiting for take when full |
611 |
*/ |
612 |
public void testPutWithTake() throws InterruptedException { |
613 |
final LinkedBlockingDeque q = new LinkedBlockingDeque(2); |
614 |
Thread t = new Thread(new CheckedRunnable() { |
615 |
public void realRun() { |
616 |
int added = 0; |
617 |
try { |
618 |
q.put(new Object()); |
619 |
++added; |
620 |
q.put(new Object()); |
621 |
++added; |
622 |
q.put(new Object()); |
623 |
++added; |
624 |
q.put(new Object()); |
625 |
++added; |
626 |
threadShouldThrow(); |
627 |
} catch (InterruptedException success) { |
628 |
threadAssertTrue(added >= 2); |
629 |
} |
630 |
}}); |
631 |
|
632 |
t.start(); |
633 |
Thread.sleep(SHORT_DELAY_MS); |
634 |
q.take(); |
635 |
t.interrupt(); |
636 |
t.join(); |
637 |
} |
638 |
|
639 |
/** |
640 |
* timed offer times out if full and elements not taken |
641 |
*/ |
642 |
public void testTimedOffer() throws InterruptedException { |
643 |
final LinkedBlockingDeque q = new LinkedBlockingDeque(2); |
644 |
Thread t = new ThreadShouldThrow(InterruptedException.class) { |
645 |
public void realRun() throws InterruptedException { |
646 |
q.put(new Object()); |
647 |
q.put(new Object()); |
648 |
threadAssertFalse(q.offer(new Object(), SHORT_DELAY_MS, MILLISECONDS)); |
649 |
q.offer(new Object(), LONG_DELAY_MS, MILLISECONDS); |
650 |
}}; |
651 |
|
652 |
t.start(); |
653 |
Thread.sleep(SMALL_DELAY_MS); |
654 |
t.interrupt(); |
655 |
t.join(); |
656 |
} |
657 |
|
658 |
/** |
659 |
* take retrieves elements in FIFO order |
660 |
*/ |
661 |
public void testTake() throws InterruptedException { |
662 |
LinkedBlockingDeque q = populatedDeque(SIZE); |
663 |
for (int i = 0; i < SIZE; ++i) { |
664 |
assertEquals(i, ((Integer)q.take()).intValue()); |
665 |
} |
666 |
} |
667 |
|
668 |
/** |
669 |
* take blocks interruptibly when empty |
670 |
*/ |
671 |
public void testTakeFromEmpty() throws InterruptedException { |
672 |
final LinkedBlockingDeque q = new LinkedBlockingDeque(2); |
673 |
Thread t = new ThreadShouldThrow(InterruptedException.class) { |
674 |
public void realRun() throws InterruptedException { |
675 |
q.take(); |
676 |
}}; |
677 |
|
678 |
t.start(); |
679 |
Thread.sleep(SHORT_DELAY_MS); |
680 |
t.interrupt(); |
681 |
t.join(); |
682 |
} |
683 |
|
684 |
/** |
685 |
* Take removes existing elements until empty, then blocks interruptibly |
686 |
*/ |
687 |
public void testBlockingTake() throws InterruptedException { |
688 |
Thread t = new ThreadShouldThrow(InterruptedException.class) { |
689 |
public void realRun() throws InterruptedException { |
690 |
LinkedBlockingDeque q = populatedDeque(SIZE); |
691 |
for (int i = 0; i < SIZE; ++i) { |
692 |
assertEquals(i, ((Integer)q.take()).intValue()); |
693 |
} |
694 |
q.take(); |
695 |
}}; |
696 |
|
697 |
t.start(); |
698 |
Thread.sleep(SHORT_DELAY_MS); |
699 |
t.interrupt(); |
700 |
t.join(); |
701 |
} |
702 |
|
703 |
|
704 |
/** |
705 |
* poll succeeds unless empty |
706 |
*/ |
707 |
public void testPoll() { |
708 |
LinkedBlockingDeque q = populatedDeque(SIZE); |
709 |
for (int i = 0; i < SIZE; ++i) { |
710 |
assertEquals(i, ((Integer)q.poll()).intValue()); |
711 |
} |
712 |
assertNull(q.poll()); |
713 |
} |
714 |
|
715 |
/** |
716 |
* timed poll with zero timeout succeeds when non-empty, else times out |
717 |
*/ |
718 |
public void testTimedPoll0() throws InterruptedException { |
719 |
LinkedBlockingDeque q = populatedDeque(SIZE); |
720 |
for (int i = 0; i < SIZE; ++i) { |
721 |
assertEquals(i, ((Integer)q.poll(0, MILLISECONDS)).intValue()); |
722 |
} |
723 |
assertNull(q.poll(0, MILLISECONDS)); |
724 |
} |
725 |
|
726 |
/** |
727 |
* timed poll with nonzero timeout succeeds when non-empty, else times out |
728 |
*/ |
729 |
public void testTimedPoll() throws InterruptedException { |
730 |
LinkedBlockingDeque q = populatedDeque(SIZE); |
731 |
for (int i = 0; i < SIZE; ++i) { |
732 |
assertEquals(i, ((Integer)q.poll(SHORT_DELAY_MS, MILLISECONDS)).intValue()); |
733 |
} |
734 |
assertNull(q.poll(SHORT_DELAY_MS, MILLISECONDS)); |
735 |
} |
736 |
|
737 |
/** |
738 |
* Interrupted timed poll throws InterruptedException instead of |
739 |
* returning timeout status |
740 |
*/ |
741 |
public void testInterruptedTimedPoll() throws InterruptedException { |
742 |
Thread t = new Thread(new CheckedRunnable() { |
743 |
public void realRun() throws InterruptedException { |
744 |
LinkedBlockingDeque q = populatedDeque(SIZE); |
745 |
for (int i = 0; i < SIZE; ++i) { |
746 |
assertEquals(i, ((Integer)q.poll(SHORT_DELAY_MS, MILLISECONDS)).intValue()); |
747 |
} |
748 |
try { |
749 |
q.poll(SMALL_DELAY_MS, MILLISECONDS); |
750 |
shouldThrow(); |
751 |
} catch (InterruptedException success) {} |
752 |
}}); |
753 |
|
754 |
t.start(); |
755 |
Thread.sleep(SHORT_DELAY_MS); |
756 |
t.interrupt(); |
757 |
t.join(); |
758 |
} |
759 |
|
760 |
/** |
761 |
* timed poll before a delayed offer fails; after offer succeeds; |
762 |
* on interruption throws |
763 |
*/ |
764 |
public void testTimedPollWithOffer() throws InterruptedException { |
765 |
final LinkedBlockingDeque q = new LinkedBlockingDeque(2); |
766 |
Thread t = new Thread(new CheckedRunnable() { |
767 |
public void realRun() throws InterruptedException { |
768 |
assertNull(q.poll(SHORT_DELAY_MS, MILLISECONDS)); |
769 |
assertSame(zero, q.poll(LONG_DELAY_MS, MILLISECONDS)); |
770 |
try { |
771 |
q.poll(LONG_DELAY_MS, MILLISECONDS); |
772 |
shouldThrow(); |
773 |
} catch (InterruptedException success) {} |
774 |
}}); |
775 |
|
776 |
t.start(); |
777 |
Thread.sleep(SMALL_DELAY_MS); |
778 |
assertTrue(q.offer(zero, SHORT_DELAY_MS, MILLISECONDS)); |
779 |
t.interrupt(); |
780 |
t.join(); |
781 |
} |
782 |
|
783 |
|
784 |
/** |
785 |
* putFirst(null) throws NPE |
786 |
*/ |
787 |
public void testPutFirstNull() throws InterruptedException { |
788 |
try { |
789 |
LinkedBlockingDeque q = new LinkedBlockingDeque(SIZE); |
790 |
q.putFirst(null); |
791 |
shouldThrow(); |
792 |
} catch (NullPointerException success) {} |
793 |
} |
794 |
|
795 |
/** |
796 |
* all elements successfully putFirst are contained |
797 |
*/ |
798 |
public void testPutFirst() throws InterruptedException { |
799 |
LinkedBlockingDeque q = new LinkedBlockingDeque(SIZE); |
800 |
for (int i = 0; i < SIZE; ++i) { |
801 |
Integer I = new Integer(i); |
802 |
q.putFirst(I); |
803 |
assertTrue(q.contains(I)); |
804 |
} |
805 |
assertEquals(0, q.remainingCapacity()); |
806 |
} |
807 |
|
808 |
/** |
809 |
* putFirst blocks interruptibly if full |
810 |
*/ |
811 |
public void testBlockingPutFirst() throws InterruptedException { |
812 |
Thread t = new Thread(new CheckedRunnable() { |
813 |
public void realRun() { |
814 |
int added = 0; |
815 |
try { |
816 |
LinkedBlockingDeque q = new LinkedBlockingDeque(SIZE); |
817 |
for (int i = 0; i < SIZE; ++i) { |
818 |
q.putFirst(new Integer(i)); |
819 |
++added; |
820 |
} |
821 |
q.putFirst(new Integer(SIZE)); |
822 |
threadShouldThrow(); |
823 |
} catch (InterruptedException success) { |
824 |
threadAssertEquals(added, SIZE); |
825 |
} |
826 |
}}); |
827 |
|
828 |
t.start(); |
829 |
Thread.sleep(SHORT_DELAY_MS); |
830 |
t.interrupt(); |
831 |
t.join(); |
832 |
} |
833 |
|
834 |
/** |
835 |
* putFirst blocks waiting for take when full |
836 |
*/ |
837 |
public void testPutFirstWithTake() throws InterruptedException { |
838 |
final LinkedBlockingDeque q = new LinkedBlockingDeque(2); |
839 |
Thread t = new Thread(new CheckedRunnable() { |
840 |
public void realRun() { |
841 |
int added = 0; |
842 |
try { |
843 |
q.putFirst(new Object()); |
844 |
++added; |
845 |
q.putFirst(new Object()); |
846 |
++added; |
847 |
q.putFirst(new Object()); |
848 |
++added; |
849 |
q.putFirst(new Object()); |
850 |
++added; |
851 |
threadShouldThrow(); |
852 |
} catch (InterruptedException success) { |
853 |
threadAssertTrue(added >= 2); |
854 |
} |
855 |
}}); |
856 |
|
857 |
t.start(); |
858 |
Thread.sleep(SHORT_DELAY_MS); |
859 |
q.take(); |
860 |
t.interrupt(); |
861 |
t.join(); |
862 |
} |
863 |
|
864 |
/** |
865 |
* timed offerFirst times out if full and elements not taken |
866 |
*/ |
867 |
public void testTimedOfferFirst() throws InterruptedException { |
868 |
final LinkedBlockingDeque q = new LinkedBlockingDeque(2); |
869 |
Thread t = new ThreadShouldThrow(InterruptedException.class) { |
870 |
public void realRun() throws InterruptedException { |
871 |
q.putFirst(new Object()); |
872 |
q.putFirst(new Object()); |
873 |
threadAssertFalse(q.offerFirst(new Object(), SHORT_DELAY_MS, MILLISECONDS)); |
874 |
q.offerFirst(new Object(), LONG_DELAY_MS, MILLISECONDS); |
875 |
}}; |
876 |
|
877 |
t.start(); |
878 |
Thread.sleep(SMALL_DELAY_MS); |
879 |
t.interrupt(); |
880 |
t.join(); |
881 |
} |
882 |
|
883 |
/** |
884 |
* take retrieves elements in FIFO order |
885 |
*/ |
886 |
public void testTakeFirst() throws InterruptedException { |
887 |
LinkedBlockingDeque q = populatedDeque(SIZE); |
888 |
for (int i = 0; i < SIZE; ++i) { |
889 |
assertEquals(i, ((Integer)q.takeFirst()).intValue()); |
890 |
} |
891 |
} |
892 |
|
893 |
/** |
894 |
* takeFirst blocks interruptibly when empty |
895 |
*/ |
896 |
public void testTakeFirstFromEmpty() throws InterruptedException { |
897 |
final LinkedBlockingDeque q = new LinkedBlockingDeque(2); |
898 |
Thread t = new ThreadShouldThrow(InterruptedException.class) { |
899 |
public void realRun() throws InterruptedException { |
900 |
q.takeFirst(); |
901 |
}}; |
902 |
|
903 |
t.start(); |
904 |
Thread.sleep(SHORT_DELAY_MS); |
905 |
t.interrupt(); |
906 |
t.join(); |
907 |
} |
908 |
|
909 |
/** |
910 |
* TakeFirst removes existing elements until empty, then blocks interruptibly |
911 |
*/ |
912 |
public void testBlockingTakeFirst() throws InterruptedException { |
913 |
Thread t = new ThreadShouldThrow(InterruptedException.class) { |
914 |
public void realRun() throws InterruptedException { |
915 |
LinkedBlockingDeque q = populatedDeque(SIZE); |
916 |
for (int i = 0; i < SIZE; ++i) { |
917 |
assertEquals(i, ((Integer)q.takeFirst()).intValue()); |
918 |
} |
919 |
q.takeFirst(); |
920 |
}}; |
921 |
|
922 |
t.start(); |
923 |
Thread.sleep(SHORT_DELAY_MS); |
924 |
t.interrupt(); |
925 |
t.join(); |
926 |
} |
927 |
|
928 |
|
929 |
/** |
930 |
* timed pollFirst with zero timeout succeeds when non-empty, else times out |
931 |
*/ |
932 |
public void testTimedPollFirst0() throws InterruptedException { |
933 |
LinkedBlockingDeque q = populatedDeque(SIZE); |
934 |
for (int i = 0; i < SIZE; ++i) { |
935 |
assertEquals(i, ((Integer)q.pollFirst(0, MILLISECONDS)).intValue()); |
936 |
} |
937 |
assertNull(q.pollFirst(0, MILLISECONDS)); |
938 |
} |
939 |
|
940 |
/** |
941 |
* timed pollFirst with nonzero timeout succeeds when non-empty, else times out |
942 |
*/ |
943 |
public void testTimedPollFirst() throws InterruptedException { |
944 |
LinkedBlockingDeque q = populatedDeque(SIZE); |
945 |
for (int i = 0; i < SIZE; ++i) { |
946 |
assertEquals(i, ((Integer)q.pollFirst(SHORT_DELAY_MS, MILLISECONDS)).intValue()); |
947 |
} |
948 |
assertNull(q.pollFirst(SHORT_DELAY_MS, MILLISECONDS)); |
949 |
} |
950 |
|
951 |
/** |
952 |
* Interrupted timed pollFirst throws InterruptedException instead of |
953 |
* returning timeout status |
954 |
*/ |
955 |
public void testInterruptedTimedPollFirst() throws InterruptedException { |
956 |
Thread t = new Thread(new CheckedRunnable() { |
957 |
public void realRun() throws InterruptedException { |
958 |
LinkedBlockingDeque q = populatedDeque(SIZE); |
959 |
for (int i = 0; i < SIZE; ++i) { |
960 |
assertEquals(i, ((Integer)q.pollFirst(SHORT_DELAY_MS, MILLISECONDS)).intValue()); |
961 |
} |
962 |
try { |
963 |
q.pollFirst(SMALL_DELAY_MS, MILLISECONDS); |
964 |
shouldThrow(); |
965 |
} catch (InterruptedException success) {} |
966 |
}}); |
967 |
|
968 |
t.start(); |
969 |
Thread.sleep(SHORT_DELAY_MS); |
970 |
t.interrupt(); |
971 |
t.join(); |
972 |
} |
973 |
|
974 |
/** |
975 |
* timed pollFirst before a delayed offerFirst fails; after offerFirst succeeds; |
976 |
* on interruption throws |
977 |
*/ |
978 |
public void testTimedPollFirstWithOfferFirst() throws InterruptedException { |
979 |
final LinkedBlockingDeque q = new LinkedBlockingDeque(2); |
980 |
Thread t = new Thread(new CheckedRunnable() { |
981 |
public void realRun() throws InterruptedException { |
982 |
assertNull(q.pollFirst(SHORT_DELAY_MS, MILLISECONDS)); |
983 |
assertSame(zero, q.pollFirst(LONG_DELAY_MS, MILLISECONDS)); |
984 |
try { |
985 |
q.pollFirst(LONG_DELAY_MS, MILLISECONDS); |
986 |
shouldThrow(); |
987 |
} catch (InterruptedException success) {} |
988 |
}}); |
989 |
|
990 |
t.start(); |
991 |
Thread.sleep(SMALL_DELAY_MS); |
992 |
assertTrue(q.offerFirst(zero, SHORT_DELAY_MS, MILLISECONDS)); |
993 |
t.interrupt(); |
994 |
t.join(); |
995 |
} |
996 |
|
997 |
/** |
998 |
* putLast(null) throws NPE |
999 |
*/ |
1000 |
public void testPutLastNull() throws InterruptedException { |
1001 |
try { |
1002 |
LinkedBlockingDeque q = new LinkedBlockingDeque(SIZE); |
1003 |
q.putLast(null); |
1004 |
shouldThrow(); |
1005 |
} catch (NullPointerException success) {} |
1006 |
} |
1007 |
|
1008 |
/** |
1009 |
* all elements successfully putLast are contained |
1010 |
*/ |
1011 |
public void testPutLast() throws InterruptedException { |
1012 |
LinkedBlockingDeque q = new LinkedBlockingDeque(SIZE); |
1013 |
for (int i = 0; i < SIZE; ++i) { |
1014 |
Integer I = new Integer(i); |
1015 |
q.putLast(I); |
1016 |
assertTrue(q.contains(I)); |
1017 |
} |
1018 |
assertEquals(0, q.remainingCapacity()); |
1019 |
} |
1020 |
|
1021 |
/** |
1022 |
* putLast blocks interruptibly if full |
1023 |
*/ |
1024 |
public void testBlockingPutLast() throws InterruptedException { |
1025 |
Thread t = new Thread(new CheckedRunnable() { |
1026 |
public void realRun() { |
1027 |
int added = 0; |
1028 |
try { |
1029 |
LinkedBlockingDeque q = new LinkedBlockingDeque(SIZE); |
1030 |
for (int i = 0; i < SIZE; ++i) { |
1031 |
q.putLast(new Integer(i)); |
1032 |
++added; |
1033 |
} |
1034 |
q.putLast(new Integer(SIZE)); |
1035 |
threadShouldThrow(); |
1036 |
} catch (InterruptedException success) { |
1037 |
threadAssertEquals(added, SIZE); |
1038 |
} |
1039 |
}}); |
1040 |
|
1041 |
t.start(); |
1042 |
Thread.sleep(SHORT_DELAY_MS); |
1043 |
t.interrupt(); |
1044 |
t.join(); |
1045 |
} |
1046 |
|
1047 |
/** |
1048 |
* putLast blocks waiting for take when full |
1049 |
*/ |
1050 |
public void testPutLastWithTake() throws InterruptedException { |
1051 |
final LinkedBlockingDeque q = new LinkedBlockingDeque(2); |
1052 |
Thread t = new Thread(new CheckedRunnable() { |
1053 |
public void realRun() { |
1054 |
int added = 0; |
1055 |
try { |
1056 |
q.putLast(new Object()); |
1057 |
++added; |
1058 |
q.putLast(new Object()); |
1059 |
++added; |
1060 |
q.putLast(new Object()); |
1061 |
++added; |
1062 |
q.putLast(new Object()); |
1063 |
++added; |
1064 |
threadShouldThrow(); |
1065 |
} catch (InterruptedException success) { |
1066 |
threadAssertTrue(added >= 2); |
1067 |
} |
1068 |
}}); |
1069 |
|
1070 |
t.start(); |
1071 |
Thread.sleep(SHORT_DELAY_MS); |
1072 |
q.take(); |
1073 |
t.interrupt(); |
1074 |
t.join(); |
1075 |
} |
1076 |
|
1077 |
/** |
1078 |
* timed offerLast times out if full and elements not taken |
1079 |
*/ |
1080 |
public void testTimedOfferLast() throws InterruptedException { |
1081 |
final LinkedBlockingDeque q = new LinkedBlockingDeque(2); |
1082 |
Thread t = new ThreadShouldThrow(InterruptedException.class) { |
1083 |
public void realRun() throws InterruptedException { |
1084 |
q.putLast(new Object()); |
1085 |
q.putLast(new Object()); |
1086 |
threadAssertFalse(q.offerLast(new Object(), SHORT_DELAY_MS, MILLISECONDS)); |
1087 |
q.offerLast(new Object(), LONG_DELAY_MS, MILLISECONDS); |
1088 |
}}; |
1089 |
|
1090 |
t.start(); |
1091 |
Thread.sleep(SMALL_DELAY_MS); |
1092 |
t.interrupt(); |
1093 |
t.join(); |
1094 |
} |
1095 |
|
1096 |
/** |
1097 |
* takeLast retrieves elements in FIFO order |
1098 |
*/ |
1099 |
public void testTakeLast() throws InterruptedException { |
1100 |
LinkedBlockingDeque q = populatedDeque(SIZE); |
1101 |
for (int i = 0; i < SIZE; ++i) { |
1102 |
assertEquals(SIZE-i-1, ((Integer)q.takeLast()).intValue()); |
1103 |
} |
1104 |
} |
1105 |
|
1106 |
/** |
1107 |
* takeLast blocks interruptibly when empty |
1108 |
*/ |
1109 |
public void testTakeLastFromEmpty() throws InterruptedException { |
1110 |
final LinkedBlockingDeque q = new LinkedBlockingDeque(2); |
1111 |
Thread t = new ThreadShouldThrow(InterruptedException.class) { |
1112 |
public void realRun() throws InterruptedException { |
1113 |
q.takeLast(); |
1114 |
}}; |
1115 |
|
1116 |
t.start(); |
1117 |
Thread.sleep(SHORT_DELAY_MS); |
1118 |
t.interrupt(); |
1119 |
t.join(); |
1120 |
} |
1121 |
|
1122 |
/** |
1123 |
* TakeLast removes existing elements until empty, then blocks interruptibly |
1124 |
*/ |
1125 |
public void testBlockingTakeLast() throws InterruptedException { |
1126 |
Thread t = new ThreadShouldThrow(InterruptedException.class) { |
1127 |
public void realRun() throws InterruptedException { |
1128 |
LinkedBlockingDeque q = populatedDeque(SIZE); |
1129 |
for (int i = 0; i < SIZE; ++i) { |
1130 |
assertEquals(SIZE-i-1, ((Integer)q.takeLast()).intValue()); |
1131 |
} |
1132 |
q.takeLast(); |
1133 |
}}; |
1134 |
|
1135 |
t.start(); |
1136 |
Thread.sleep(SHORT_DELAY_MS); |
1137 |
t.interrupt(); |
1138 |
t.join(); |
1139 |
} |
1140 |
|
1141 |
|
1142 |
/** |
1143 |
* timed pollLast with zero timeout succeeds when non-empty, else times out |
1144 |
*/ |
1145 |
public void testTimedPollLast0() throws InterruptedException { |
1146 |
LinkedBlockingDeque q = populatedDeque(SIZE); |
1147 |
for (int i = 0; i < SIZE; ++i) { |
1148 |
assertEquals(SIZE-i-1, ((Integer)q.pollLast(0, MILLISECONDS)).intValue()); |
1149 |
} |
1150 |
assertNull(q.pollLast(0, MILLISECONDS)); |
1151 |
} |
1152 |
|
1153 |
/** |
1154 |
* timed pollLast with nonzero timeout succeeds when non-empty, else times out |
1155 |
*/ |
1156 |
public void testTimedPollLast() throws InterruptedException { |
1157 |
LinkedBlockingDeque q = populatedDeque(SIZE); |
1158 |
for (int i = 0; i < SIZE; ++i) { |
1159 |
assertEquals(SIZE-i-1, ((Integer)q.pollLast(SHORT_DELAY_MS, MILLISECONDS)).intValue()); |
1160 |
} |
1161 |
assertNull(q.pollLast(SHORT_DELAY_MS, MILLISECONDS)); |
1162 |
} |
1163 |
|
1164 |
/** |
1165 |
* Interrupted timed pollLast throws InterruptedException instead of |
1166 |
* returning timeout status |
1167 |
*/ |
1168 |
public void testInterruptedTimedPollLast() throws InterruptedException { |
1169 |
Thread t = new Thread(new CheckedRunnable() { |
1170 |
public void realRun() throws InterruptedException { |
1171 |
LinkedBlockingDeque q = populatedDeque(SIZE); |
1172 |
for (int i = 0; i < SIZE; ++i) { |
1173 |
assertEquals(SIZE-i-1, ((Integer)q.pollLast(SHORT_DELAY_MS, MILLISECONDS)).intValue()); |
1174 |
} |
1175 |
try { |
1176 |
q.pollLast(SMALL_DELAY_MS, MILLISECONDS); |
1177 |
shouldThrow(); |
1178 |
} catch (InterruptedException success) {} |
1179 |
}}); |
1180 |
|
1181 |
t.start(); |
1182 |
Thread.sleep(SHORT_DELAY_MS); |
1183 |
t.interrupt(); |
1184 |
t.join(); |
1185 |
} |
1186 |
|
1187 |
/** |
1188 |
* timed poll before a delayed offerLast fails; after offerLast succeeds; |
1189 |
* on interruption throws |
1190 |
*/ |
1191 |
public void testTimedPollWithOfferLast() throws InterruptedException { |
1192 |
final LinkedBlockingDeque q = new LinkedBlockingDeque(2); |
1193 |
Thread t = new Thread(new CheckedRunnable() { |
1194 |
public void realRun() throws InterruptedException { |
1195 |
assertNull(q.poll(SHORT_DELAY_MS, MILLISECONDS)); |
1196 |
assertSame(zero, q.poll(LONG_DELAY_MS, MILLISECONDS)); |
1197 |
try { |
1198 |
q.poll(LONG_DELAY_MS, MILLISECONDS); |
1199 |
shouldThrow(); |
1200 |
} catch (InterruptedException success) {} |
1201 |
}}); |
1202 |
|
1203 |
t.start(); |
1204 |
Thread.sleep(SMALL_DELAY_MS); |
1205 |
assertTrue(q.offerLast(zero, SHORT_DELAY_MS, MILLISECONDS)); |
1206 |
t.interrupt(); |
1207 |
t.join(); |
1208 |
} |
1209 |
|
1210 |
|
1211 |
/** |
1212 |
* element returns next element, or throws NSEE if empty |
1213 |
*/ |
1214 |
public void testElement() { |
1215 |
LinkedBlockingDeque q = populatedDeque(SIZE); |
1216 |
for (int i = 0; i < SIZE; ++i) { |
1217 |
assertEquals(i, ((Integer)q.element()).intValue()); |
1218 |
q.poll(); |
1219 |
} |
1220 |
try { |
1221 |
q.element(); |
1222 |
shouldThrow(); |
1223 |
} catch (NoSuchElementException success) {} |
1224 |
} |
1225 |
|
1226 |
/** |
1227 |
* remove(x) removes x and returns true if present |
1228 |
*/ |
1229 |
public void testRemoveElement() { |
1230 |
LinkedBlockingDeque q = populatedDeque(SIZE); |
1231 |
for (int i = 1; i < SIZE; i+=2) { |
1232 |
assertTrue(q.remove(new Integer(i))); |
1233 |
} |
1234 |
for (int i = 0; i < SIZE; i+=2) { |
1235 |
assertTrue(q.remove(new Integer(i))); |
1236 |
assertFalse(q.remove(new Integer(i+1))); |
1237 |
} |
1238 |
assertTrue(q.isEmpty()); |
1239 |
} |
1240 |
|
1241 |
/** |
1242 |
* contains(x) reports true when elements added but not yet removed |
1243 |
*/ |
1244 |
public void testContains() { |
1245 |
LinkedBlockingDeque q = populatedDeque(SIZE); |
1246 |
for (int i = 0; i < SIZE; ++i) { |
1247 |
assertTrue(q.contains(new Integer(i))); |
1248 |
q.poll(); |
1249 |
assertFalse(q.contains(new Integer(i))); |
1250 |
} |
1251 |
} |
1252 |
|
1253 |
/** |
1254 |
* clear removes all elements |
1255 |
*/ |
1256 |
public void testClear() { |
1257 |
LinkedBlockingDeque q = populatedDeque(SIZE); |
1258 |
q.clear(); |
1259 |
assertTrue(q.isEmpty()); |
1260 |
assertEquals(0, q.size()); |
1261 |
assertEquals(SIZE, q.remainingCapacity()); |
1262 |
q.add(one); |
1263 |
assertFalse(q.isEmpty()); |
1264 |
assertTrue(q.contains(one)); |
1265 |
q.clear(); |
1266 |
assertTrue(q.isEmpty()); |
1267 |
} |
1268 |
|
1269 |
/** |
1270 |
* containsAll(c) is true when c contains a subset of elements |
1271 |
*/ |
1272 |
public void testContainsAll() { |
1273 |
LinkedBlockingDeque q = populatedDeque(SIZE); |
1274 |
LinkedBlockingDeque p = new LinkedBlockingDeque(SIZE); |
1275 |
for (int i = 0; i < SIZE; ++i) { |
1276 |
assertTrue(q.containsAll(p)); |
1277 |
assertFalse(p.containsAll(q)); |
1278 |
p.add(new Integer(i)); |
1279 |
} |
1280 |
assertTrue(p.containsAll(q)); |
1281 |
} |
1282 |
|
1283 |
/** |
1284 |
* retainAll(c) retains only those elements of c and reports true if changed |
1285 |
*/ |
1286 |
public void testRetainAll() { |
1287 |
LinkedBlockingDeque q = populatedDeque(SIZE); |
1288 |
LinkedBlockingDeque p = populatedDeque(SIZE); |
1289 |
for (int i = 0; i < SIZE; ++i) { |
1290 |
boolean changed = q.retainAll(p); |
1291 |
if (i == 0) |
1292 |
assertFalse(changed); |
1293 |
else |
1294 |
assertTrue(changed); |
1295 |
|
1296 |
assertTrue(q.containsAll(p)); |
1297 |
assertEquals(SIZE-i, q.size()); |
1298 |
p.remove(); |
1299 |
} |
1300 |
} |
1301 |
|
1302 |
/** |
1303 |
* removeAll(c) removes only those elements of c and reports true if changed |
1304 |
*/ |
1305 |
public void testRemoveAll() { |
1306 |
for (int i = 1; i < SIZE; ++i) { |
1307 |
LinkedBlockingDeque q = populatedDeque(SIZE); |
1308 |
LinkedBlockingDeque p = populatedDeque(i); |
1309 |
assertTrue(q.removeAll(p)); |
1310 |
assertEquals(SIZE-i, q.size()); |
1311 |
for (int j = 0; j < i; ++j) { |
1312 |
Integer I = (Integer)(p.remove()); |
1313 |
assertFalse(q.contains(I)); |
1314 |
} |
1315 |
} |
1316 |
} |
1317 |
|
1318 |
/** |
1319 |
* toArray contains all elements |
1320 |
*/ |
1321 |
public void testToArray() throws InterruptedException{ |
1322 |
LinkedBlockingDeque q = populatedDeque(SIZE); |
1323 |
Object[] o = q.toArray(); |
1324 |
for (int i = 0; i < o.length; i++) |
1325 |
assertEquals(o[i], q.take()); |
1326 |
} |
1327 |
|
1328 |
/** |
1329 |
* toArray(a) contains all elements |
1330 |
*/ |
1331 |
public void testToArray2() throws InterruptedException { |
1332 |
LinkedBlockingDeque q = populatedDeque(SIZE); |
1333 |
Integer[] ints = new Integer[SIZE]; |
1334 |
ints = (Integer[])q.toArray(ints); |
1335 |
for (int i = 0; i < ints.length; i++) |
1336 |
assertEquals(ints[i], q.take()); |
1337 |
} |
1338 |
|
1339 |
/** |
1340 |
* toArray(null) throws NPE |
1341 |
*/ |
1342 |
public void testToArray_BadArg() { |
1343 |
try { |
1344 |
LinkedBlockingDeque q = populatedDeque(SIZE); |
1345 |
Object o[] = q.toArray(null); |
1346 |
shouldThrow(); |
1347 |
} catch (NullPointerException success) {} |
1348 |
} |
1349 |
|
1350 |
/** |
1351 |
* toArray with incompatible array type throws CCE |
1352 |
*/ |
1353 |
public void testToArray1_BadArg() { |
1354 |
try { |
1355 |
LinkedBlockingDeque q = populatedDeque(SIZE); |
1356 |
Object o[] = q.toArray(new String[10] ); |
1357 |
shouldThrow(); |
1358 |
} catch (ArrayStoreException success) {} |
1359 |
} |
1360 |
|
1361 |
|
1362 |
/** |
1363 |
* iterator iterates through all elements |
1364 |
*/ |
1365 |
public void testIterator() throws InterruptedException { |
1366 |
LinkedBlockingDeque q = populatedDeque(SIZE); |
1367 |
Iterator it = q.iterator(); |
1368 |
while (it.hasNext()) { |
1369 |
assertEquals(it.next(), q.take()); |
1370 |
} |
1371 |
} |
1372 |
|
1373 |
/** |
1374 |
* iterator.remove removes current element |
1375 |
*/ |
1376 |
public void testIteratorRemove () { |
1377 |
final LinkedBlockingDeque q = new LinkedBlockingDeque(3); |
1378 |
q.add(two); |
1379 |
q.add(one); |
1380 |
q.add(three); |
1381 |
|
1382 |
Iterator it = q.iterator(); |
1383 |
it.next(); |
1384 |
it.remove(); |
1385 |
|
1386 |
it = q.iterator(); |
1387 |
assertEquals(it.next(), one); |
1388 |
assertEquals(it.next(), three); |
1389 |
assertFalse(it.hasNext()); |
1390 |
} |
1391 |
|
1392 |
|
1393 |
/** |
1394 |
* iterator ordering is FIFO |
1395 |
*/ |
1396 |
public void testIteratorOrdering() { |
1397 |
final LinkedBlockingDeque q = new LinkedBlockingDeque(3); |
1398 |
q.add(one); |
1399 |
q.add(two); |
1400 |
q.add(three); |
1401 |
assertEquals(0, q.remainingCapacity()); |
1402 |
int k = 0; |
1403 |
for (Iterator it = q.iterator(); it.hasNext();) { |
1404 |
int i = ((Integer)(it.next())).intValue(); |
1405 |
assertEquals(++k, i); |
1406 |
} |
1407 |
assertEquals(3, k); |
1408 |
} |
1409 |
|
1410 |
/** |
1411 |
* Modifications do not cause iterators to fail |
1412 |
*/ |
1413 |
public void testWeaklyConsistentIteration () { |
1414 |
final LinkedBlockingDeque q = new LinkedBlockingDeque(3); |
1415 |
q.add(one); |
1416 |
q.add(two); |
1417 |
q.add(three); |
1418 |
for (Iterator it = q.iterator(); it.hasNext();) { |
1419 |
q.remove(); |
1420 |
it.next(); |
1421 |
} |
1422 |
assertEquals(0, q.size()); |
1423 |
} |
1424 |
|
1425 |
|
1426 |
/** |
1427 |
* Descending iterator iterates through all elements |
1428 |
*/ |
1429 |
public void testDescendingIterator() { |
1430 |
LinkedBlockingDeque q = populatedDeque(SIZE); |
1431 |
int i = 0; |
1432 |
Iterator it = q.descendingIterator(); |
1433 |
while (it.hasNext()) { |
1434 |
assertTrue(q.contains(it.next())); |
1435 |
++i; |
1436 |
} |
1437 |
assertEquals(i, SIZE); |
1438 |
assertFalse(it.hasNext()); |
1439 |
try { |
1440 |
it.next(); |
1441 |
shouldThrow(); |
1442 |
} catch (NoSuchElementException success) {} |
1443 |
} |
1444 |
|
1445 |
/** |
1446 |
* Descending iterator ordering is reverse FIFO |
1447 |
*/ |
1448 |
public void testDescendingIteratorOrdering() { |
1449 |
final LinkedBlockingDeque q = new LinkedBlockingDeque(); |
1450 |
for (int iters = 0; iters < 100; ++iters) { |
1451 |
q.add(new Integer(3)); |
1452 |
q.add(new Integer(2)); |
1453 |
q.add(new Integer(1)); |
1454 |
int k = 0; |
1455 |
for (Iterator it = q.descendingIterator(); it.hasNext();) { |
1456 |
int i = ((Integer)(it.next())).intValue(); |
1457 |
assertEquals(++k, i); |
1458 |
} |
1459 |
|
1460 |
assertEquals(3, k); |
1461 |
q.remove(); |
1462 |
q.remove(); |
1463 |
q.remove(); |
1464 |
} |
1465 |
} |
1466 |
|
1467 |
/** |
1468 |
* descendingIterator.remove removes current element |
1469 |
*/ |
1470 |
public void testDescendingIteratorRemove () { |
1471 |
final LinkedBlockingDeque q = new LinkedBlockingDeque(); |
1472 |
for (int iters = 0; iters < 100; ++iters) { |
1473 |
q.add(new Integer(3)); |
1474 |
q.add(new Integer(2)); |
1475 |
q.add(new Integer(1)); |
1476 |
Iterator it = q.descendingIterator(); |
1477 |
assertEquals(it.next(), new Integer(1)); |
1478 |
it.remove(); |
1479 |
assertEquals(it.next(), new Integer(2)); |
1480 |
it = q.descendingIterator(); |
1481 |
assertEquals(it.next(), new Integer(2)); |
1482 |
assertEquals(it.next(), new Integer(3)); |
1483 |
it.remove(); |
1484 |
assertFalse(it.hasNext()); |
1485 |
q.remove(); |
1486 |
} |
1487 |
} |
1488 |
|
1489 |
|
1490 |
/** |
1491 |
* toString contains toStrings of elements |
1492 |
*/ |
1493 |
public void testToString() { |
1494 |
LinkedBlockingDeque q = populatedDeque(SIZE); |
1495 |
String s = q.toString(); |
1496 |
for (int i = 0; i < SIZE; ++i) { |
1497 |
assertTrue(s.indexOf(String.valueOf(i)) >= 0); |
1498 |
} |
1499 |
} |
1500 |
|
1501 |
|
1502 |
/** |
1503 |
* offer transfers elements across Executor tasks |
1504 |
*/ |
1505 |
public void testOfferInExecutor() { |
1506 |
final LinkedBlockingDeque q = new LinkedBlockingDeque(2); |
1507 |
q.add(one); |
1508 |
q.add(two); |
1509 |
ExecutorService executor = Executors.newFixedThreadPool(2); |
1510 |
executor.execute(new CheckedRunnable() { |
1511 |
public void realRun() throws InterruptedException { |
1512 |
threadAssertFalse(q.offer(three)); |
1513 |
threadAssertTrue(q.offer(three, MEDIUM_DELAY_MS, MILLISECONDS)); |
1514 |
threadAssertEquals(0, q.remainingCapacity()); |
1515 |
}}); |
1516 |
|
1517 |
executor.execute(new CheckedRunnable() { |
1518 |
public void realRun() throws InterruptedException { |
1519 |
Thread.sleep(SMALL_DELAY_MS); |
1520 |
threadAssertEquals(one, q.take()); |
1521 |
}}); |
1522 |
|
1523 |
joinPool(executor); |
1524 |
} |
1525 |
|
1526 |
/** |
1527 |
* poll retrieves elements across Executor threads |
1528 |
*/ |
1529 |
public void testPollInExecutor() { |
1530 |
final LinkedBlockingDeque q = new LinkedBlockingDeque(2); |
1531 |
ExecutorService executor = Executors.newFixedThreadPool(2); |
1532 |
executor.execute(new CheckedRunnable() { |
1533 |
public void realRun() throws InterruptedException { |
1534 |
threadAssertNull(q.poll()); |
1535 |
threadAssertTrue(null != q.poll(MEDIUM_DELAY_MS, MILLISECONDS)); |
1536 |
threadAssertTrue(q.isEmpty()); |
1537 |
}}); |
1538 |
|
1539 |
executor.execute(new CheckedRunnable() { |
1540 |
public void realRun() throws InterruptedException { |
1541 |
Thread.sleep(SMALL_DELAY_MS); |
1542 |
q.put(one); |
1543 |
}}); |
1544 |
|
1545 |
joinPool(executor); |
1546 |
} |
1547 |
|
1548 |
/** |
1549 |
* A deserialized serialized deque has same elements in same order |
1550 |
*/ |
1551 |
public void testSerialization() throws Exception { |
1552 |
LinkedBlockingDeque q = populatedDeque(SIZE); |
1553 |
|
1554 |
ByteArrayOutputStream bout = new ByteArrayOutputStream(10000); |
1555 |
ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout)); |
1556 |
out.writeObject(q); |
1557 |
out.close(); |
1558 |
|
1559 |
ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray()); |
1560 |
ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin)); |
1561 |
LinkedBlockingDeque r = (LinkedBlockingDeque)in.readObject(); |
1562 |
assertEquals(q.size(), r.size()); |
1563 |
while (!q.isEmpty()) |
1564 |
assertEquals(q.remove(), r.remove()); |
1565 |
} |
1566 |
|
1567 |
/** |
1568 |
* drainTo(null) throws NPE |
1569 |
*/ |
1570 |
public void testDrainToNull() { |
1571 |
LinkedBlockingDeque q = populatedDeque(SIZE); |
1572 |
try { |
1573 |
q.drainTo(null); |
1574 |
shouldThrow(); |
1575 |
} catch (NullPointerException success) {} |
1576 |
} |
1577 |
|
1578 |
/** |
1579 |
* drainTo(this) throws IAE |
1580 |
*/ |
1581 |
public void testDrainToSelf() { |
1582 |
LinkedBlockingDeque q = populatedDeque(SIZE); |
1583 |
try { |
1584 |
q.drainTo(q); |
1585 |
shouldThrow(); |
1586 |
} catch (IllegalArgumentException success) {} |
1587 |
} |
1588 |
|
1589 |
/** |
1590 |
* drainTo(c) empties deque into another collection c |
1591 |
*/ |
1592 |
public void testDrainTo() { |
1593 |
LinkedBlockingDeque q = populatedDeque(SIZE); |
1594 |
ArrayList l = new ArrayList(); |
1595 |
q.drainTo(l); |
1596 |
assertEquals(q.size(), 0); |
1597 |
assertEquals(l.size(), SIZE); |
1598 |
for (int i = 0; i < SIZE; ++i) |
1599 |
assertEquals(l.get(i), new Integer(i)); |
1600 |
q.add(zero); |
1601 |
q.add(one); |
1602 |
assertFalse(q.isEmpty()); |
1603 |
assertTrue(q.contains(zero)); |
1604 |
assertTrue(q.contains(one)); |
1605 |
l.clear(); |
1606 |
q.drainTo(l); |
1607 |
assertEquals(q.size(), 0); |
1608 |
assertEquals(l.size(), 2); |
1609 |
for (int i = 0; i < 2; ++i) |
1610 |
assertEquals(l.get(i), new Integer(i)); |
1611 |
} |
1612 |
|
1613 |
/** |
1614 |
* drainTo empties full deque, unblocking a waiting put. |
1615 |
*/ |
1616 |
public void testDrainToWithActivePut() throws InterruptedException { |
1617 |
final LinkedBlockingDeque q = populatedDeque(SIZE); |
1618 |
Thread t = new Thread(new CheckedRunnable() { |
1619 |
public void realRun() throws InterruptedException { |
1620 |
q.put(new Integer(SIZE+1)); |
1621 |
}}); |
1622 |
|
1623 |
t.start(); |
1624 |
ArrayList l = new ArrayList(); |
1625 |
q.drainTo(l); |
1626 |
assertTrue(l.size() >= SIZE); |
1627 |
for (int i = 0; i < SIZE; ++i) |
1628 |
assertEquals(l.get(i), new Integer(i)); |
1629 |
t.join(); |
1630 |
assertTrue(q.size() + l.size() >= SIZE); |
1631 |
} |
1632 |
|
1633 |
/** |
1634 |
* drainTo(null, n) throws NPE |
1635 |
*/ |
1636 |
public void testDrainToNullN() { |
1637 |
LinkedBlockingDeque q = populatedDeque(SIZE); |
1638 |
try { |
1639 |
q.drainTo(null, 0); |
1640 |
shouldThrow(); |
1641 |
} catch (NullPointerException success) {} |
1642 |
} |
1643 |
|
1644 |
/** |
1645 |
* drainTo(this, n) throws IAE |
1646 |
*/ |
1647 |
public void testDrainToSelfN() { |
1648 |
LinkedBlockingDeque q = populatedDeque(SIZE); |
1649 |
try { |
1650 |
q.drainTo(q, 0); |
1651 |
shouldThrow(); |
1652 |
} catch (IllegalArgumentException success) {} |
1653 |
} |
1654 |
|
1655 |
/** |
1656 |
* drainTo(c, n) empties first max {n, size} elements of deque into c |
1657 |
*/ |
1658 |
public void testDrainToN() { |
1659 |
LinkedBlockingDeque q = new LinkedBlockingDeque(); |
1660 |
for (int i = 0; i < SIZE + 2; ++i) { |
1661 |
for (int j = 0; j < SIZE; j++) |
1662 |
assertTrue(q.offer(new Integer(j))); |
1663 |
ArrayList l = new ArrayList(); |
1664 |
q.drainTo(l, i); |
1665 |
int k = (i < SIZE)? i : SIZE; |
1666 |
assertEquals(l.size(), k); |
1667 |
assertEquals(q.size(), SIZE-k); |
1668 |
for (int j = 0; j < k; ++j) |
1669 |
assertEquals(l.get(j), new Integer(j)); |
1670 |
while (q.poll() != null) ; |
1671 |
} |
1672 |
} |
1673 |
|
1674 |
} |