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/* |
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* Written by members of JCP JSR-166 Expert Group and released to the |
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* public domain. Use, modify, and redistribute this code in any way |
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* without acknowledgement. Other contributors include Andrew Wright, |
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* Jeffrey Hayes, Pat Fischer, Mike Judd. |
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* Written by Doug Lea with assistance from members of JCP JSR-166 |
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* Expert Group and released to the public domain, as explained at |
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* http://creativecommons.org/publicdomain/zero/1.0/ |
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* Other contributors include Andrew Wright, Jeffrey Hayes, |
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* Pat Fisher, Mike Judd. |
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*/ |
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import junit.framework.*; |
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import java.util.*; |
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import java.util.concurrent.*; |
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|
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public class DelayQueueTest extends TestCase { |
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|
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private static final int N = 10; |
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private static final long SHORT_DELAY_MS = 100; |
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private static final long MEDIUM_DELAY_MS = 1000; |
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private static final long LONG_DELAY_MS = 10000; |
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private static final int NOCAP = Integer.MAX_VALUE; |
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import static java.util.concurrent.TimeUnit.MILLISECONDS; |
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|
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import java.util.ArrayList; |
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import java.util.Arrays; |
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import java.util.Collection; |
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import java.util.Iterator; |
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import java.util.NoSuchElementException; |
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import java.util.concurrent.BlockingQueue; |
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import java.util.concurrent.CountDownLatch; |
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import java.util.concurrent.Delayed; |
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import java.util.concurrent.DelayQueue; |
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import java.util.concurrent.Executors; |
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import java.util.concurrent.ExecutorService; |
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import java.util.concurrent.TimeUnit; |
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|
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import junit.framework.Test; |
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|
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public class DelayQueueTest extends JSR166TestCase { |
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|
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public static class Generic extends BlockingQueueTest { |
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protected BlockingQueue emptyCollection() { |
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return new DelayQueue(); |
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} |
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protected PDelay makeElement(int i) { |
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return new PDelay(i); |
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} |
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} |
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|
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public static void main(String[] args) { |
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junit.textui.TestRunner.run (suite()); |
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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(DelayQueueTest.class); |
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return newTestSuite(DelayQueueTest.class, |
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new Generic().testSuite()); |
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} |
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|
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// Most Q/BQ tests use Pseudodelays, where delays are all elapsed |
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// (so, no blocking solely for delays) but are still ordered |
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private static final int NOCAP = Integer.MAX_VALUE; |
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|
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static class PDelay implements Delayed { |
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/** |
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* A delayed implementation for testing. |
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* Most tests use Pseudodelays, where delays are all elapsed |
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* (so, no blocking solely for delays) but are still ordered |
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*/ |
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static class PDelay implements Delayed { |
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int pseudodelay; |
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PDelay(int i) { pseudodelay = Integer.MIN_VALUE + i; } |
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public int compareTo(Object y) { |
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int i = pseudodelay; |
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int j = ((PDelay)y).pseudodelay; |
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if (i < j) return -1; |
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if (i > j) return 1; |
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return 0; |
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PDelay(int i) { pseudodelay = i; } |
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public int compareTo(PDelay other) { |
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int a = this.pseudodelay; |
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int b = other.pseudodelay; |
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return (a < b) ? -1 : (a > b) ? 1 : 0; |
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} |
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public int compareTo(Delayed y) { |
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return compareTo((PDelay)y); |
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} |
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public boolean equals(Object other) { |
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return (other instanceof PDelay) && |
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this.pseudodelay == ((PDelay)other).pseudodelay; |
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} |
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// suppress [overrides] javac warning |
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public int hashCode() { return pseudodelay; } |
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public long getDelay(TimeUnit ignore) { |
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return Integer.MIN_VALUE + pseudodelay; |
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} |
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public String toString() { |
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return String.valueOf(pseudodelay); |
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} |
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} |
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|
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public int compareTo(PDelay y) { |
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int i = pseudodelay; |
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int j = ((PDelay)y).pseudodelay; |
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/** |
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* Delayed implementation that actually delays |
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*/ |
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static class NanoDelay implements Delayed { |
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long trigger; |
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NanoDelay(long i) { |
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trigger = System.nanoTime() + i; |
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} |
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public int compareTo(NanoDelay y) { |
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long i = trigger; |
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long j = y.trigger; |
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if (i < j) return -1; |
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if (i > j) return 1; |
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return 0; |
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} |
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|
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public int compareTo(Delayed y) { |
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return compareTo((NanoDelay)y); |
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} |
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|
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public boolean equals(Object other) { |
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return ((PDelay)other).pseudodelay == pseudodelay; |
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return equals((NanoDelay)other); |
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} |
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public boolean equals(PDelay other) { |
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return ((PDelay)other).pseudodelay == pseudodelay; |
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public boolean equals(NanoDelay other) { |
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return other.trigger == trigger; |
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} |
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|
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// suppress [overrides] javac warning |
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public int hashCode() { return (int) trigger; } |
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|
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public long getDelay(TimeUnit ignore) { |
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return pseudodelay; |
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public long getDelay(TimeUnit unit) { |
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long n = trigger - System.nanoTime(); |
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return unit.convert(n, TimeUnit.NANOSECONDS); |
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} |
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public int intValue() { |
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return pseudodelay; |
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|
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public long getTriggerTime() { |
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return trigger; |
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} |
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|
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public String toString() { |
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return String.valueOf(pseudodelay); |
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return String.valueOf(trigger); |
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} |
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} |
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|
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– |
|
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– |
|
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|
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/** |
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* Create a queue of given size containing consecutive |
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* Returns a new queue of given size containing consecutive |
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* PDelays 0 ... n. |
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*/ |
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private DelayQueue fullQueue(int n) { |
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DelayQueue q = new DelayQueue(); |
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private DelayQueue<PDelay> populatedQueue(int n) { |
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DelayQueue<PDelay> q = new DelayQueue<PDelay>(); |
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assertTrue(q.isEmpty()); |
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for(int i = n-1; i >= 0; i-=2) |
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assertTrue(q.offer(new PDelay(i))); |
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for(int i = (n & 1); i < n; i+=2) |
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assertTrue(q.offer(new PDelay(i))); |
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for (int i = n-1; i >= 0; i -= 2) |
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assertTrue(q.offer(new PDelay(i))); |
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for (int i = (n & 1); i < n; i += 2) |
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assertTrue(q.offer(new PDelay(i))); |
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assertFalse(q.isEmpty()); |
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assertEquals(NOCAP, q.remainingCapacity()); |
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assertEquals(n, q.size()); |
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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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public void testConstructor1(){ |
138 |
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|
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/** |
140 |
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* A new queue has unbounded capacity |
141 |
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*/ |
142 |
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public void testConstructor1() { |
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assertEquals(NOCAP, new DelayQueue().remainingCapacity()); |
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} |
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|
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public void testConstructor3(){ |
147 |
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|
146 |
> |
/** |
147 |
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* Initializing from null Collection throws NPE |
148 |
> |
*/ |
149 |
> |
public void testConstructor3() { |
150 |
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try { |
151 |
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DelayQueue q = new DelayQueue(null); |
152 |
< |
fail("Cannot make from null collection"); |
153 |
< |
} |
100 |
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catch (NullPointerException success) {} |
152 |
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shouldThrow(); |
153 |
> |
} catch (NullPointerException success) {} |
154 |
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} |
155 |
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|
156 |
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public void testConstructor4(){ |
156 |
> |
/** |
157 |
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* Initializing from Collection of null elements throws NPE |
158 |
> |
*/ |
159 |
> |
public void testConstructor4() { |
160 |
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try { |
161 |
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PDelay[] ints = new PDelay[N]; |
161 |
> |
PDelay[] ints = new PDelay[SIZE]; |
162 |
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DelayQueue q = new DelayQueue(Arrays.asList(ints)); |
163 |
< |
fail("Cannot make with null elements"); |
164 |
< |
} |
109 |
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catch (NullPointerException success) {} |
163 |
> |
shouldThrow(); |
164 |
> |
} catch (NullPointerException success) {} |
165 |
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} |
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|
167 |
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public void testConstructor5(){ |
167 |
> |
/** |
168 |
> |
* Initializing from Collection with some null elements throws NPE |
169 |
> |
*/ |
170 |
> |
public void testConstructor5() { |
171 |
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try { |
172 |
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PDelay[] ints = new PDelay[N]; |
173 |
< |
for (int i = 0; i < N-1; ++i) |
172 |
> |
PDelay[] ints = new PDelay[SIZE]; |
173 |
> |
for (int i = 0; i < SIZE-1; ++i) |
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ints[i] = new PDelay(i); |
175 |
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DelayQueue q = new DelayQueue(Arrays.asList(ints)); |
176 |
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fail("Cannot make with null elements"); |
177 |
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} |
120 |
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catch (NullPointerException success) {} |
176 |
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shouldThrow(); |
177 |
> |
} catch (NullPointerException success) {} |
178 |
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} |
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|
180 |
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public void testConstructor6(){ |
181 |
< |
try { |
182 |
< |
PDelay[] ints = new PDelay[N]; |
183 |
< |
for (int i = 0; i < N; ++i) |
184 |
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ints[i] = new PDelay(i); |
185 |
< |
DelayQueue q = new DelayQueue(Arrays.asList(ints)); |
186 |
< |
for (int i = 0; i < N; ++i) |
187 |
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assertEquals(ints[i], q.poll()); |
188 |
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} |
189 |
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finally {} |
180 |
> |
/** |
181 |
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* Queue contains all elements of collection used to initialize |
182 |
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*/ |
183 |
> |
public void testConstructor6() { |
184 |
> |
PDelay[] ints = new PDelay[SIZE]; |
185 |
> |
for (int i = 0; i < SIZE; ++i) |
186 |
> |
ints[i] = new PDelay(i); |
187 |
> |
DelayQueue q = new DelayQueue(Arrays.asList(ints)); |
188 |
> |
for (int i = 0; i < SIZE; ++i) |
189 |
> |
assertEquals(ints[i], q.poll()); |
190 |
|
} |
191 |
|
|
192 |
+ |
/** |
193 |
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* isEmpty is true before add, false after |
194 |
+ |
*/ |
195 |
|
public void testEmpty() { |
196 |
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DelayQueue q = new DelayQueue(); |
197 |
|
assertTrue(q.isEmpty()); |
204 |
|
assertTrue(q.isEmpty()); |
205 |
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} |
206 |
|
|
207 |
< |
public void testRemainingCapacity(){ |
208 |
< |
DelayQueue q = fullQueue(N); |
209 |
< |
for (int i = 0; i < N; ++i) { |
207 |
> |
/** |
208 |
> |
* remainingCapacity does not change when elements added or removed, |
209 |
> |
* but size does |
210 |
> |
*/ |
211 |
> |
public void testRemainingCapacity() { |
212 |
> |
DelayQueue q = populatedQueue(SIZE); |
213 |
> |
for (int i = 0; i < SIZE; ++i) { |
214 |
|
assertEquals(NOCAP, q.remainingCapacity()); |
215 |
< |
assertEquals(N-i, q.size()); |
215 |
> |
assertEquals(SIZE-i, q.size()); |
216 |
|
q.remove(); |
217 |
|
} |
218 |
< |
for (int i = 0; i < N; ++i) { |
218 |
> |
for (int i = 0; i < SIZE; ++i) { |
219 |
|
assertEquals(NOCAP, q.remainingCapacity()); |
220 |
|
assertEquals(i, q.size()); |
221 |
|
q.add(new PDelay(i)); |
222 |
|
} |
223 |
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} |
224 |
|
|
225 |
< |
public void testOfferNull(){ |
226 |
< |
try { |
227 |
< |
DelayQueue q = new DelayQueue(); |
164 |
< |
q.offer(null); |
165 |
< |
fail("should throw NPE"); |
166 |
< |
} catch (NullPointerException success) { } |
167 |
< |
} |
168 |
< |
|
225 |
> |
/** |
226 |
> |
* offer non-null succeeds |
227 |
> |
*/ |
228 |
|
public void testOffer() { |
229 |
|
DelayQueue q = new DelayQueue(); |
230 |
|
assertTrue(q.offer(new PDelay(0))); |
231 |
|
assertTrue(q.offer(new PDelay(1))); |
232 |
|
} |
233 |
|
|
234 |
< |
public void testAdd(){ |
234 |
> |
/** |
235 |
> |
* add succeeds |
236 |
> |
*/ |
237 |
> |
public void testAdd() { |
238 |
|
DelayQueue q = new DelayQueue(); |
239 |
< |
for (int i = 0; i < N; ++i) { |
239 |
> |
for (int i = 0; i < SIZE; ++i) { |
240 |
|
assertEquals(i, q.size()); |
241 |
|
assertTrue(q.add(new PDelay(i))); |
242 |
|
} |
243 |
|
} |
244 |
|
|
245 |
< |
public void testAddAll1(){ |
246 |
< |
try { |
247 |
< |
DelayQueue q = new DelayQueue(); |
248 |
< |
q.addAll(null); |
187 |
< |
fail("Cannot add null collection"); |
188 |
< |
} |
189 |
< |
catch (NullPointerException success) {} |
190 |
< |
} |
191 |
< |
public void testAddAll2(){ |
245 |
> |
/** |
246 |
> |
* addAll(this) throws IAE |
247 |
> |
*/ |
248 |
> |
public void testAddAllSelf() { |
249 |
|
try { |
250 |
< |
DelayQueue q = new DelayQueue(); |
251 |
< |
PDelay[] ints = new PDelay[N]; |
252 |
< |
q.addAll(Arrays.asList(ints)); |
253 |
< |
fail("Cannot add null elements"); |
197 |
< |
} |
198 |
< |
catch (NullPointerException success) {} |
250 |
> |
DelayQueue q = populatedQueue(SIZE); |
251 |
> |
q.addAll(q); |
252 |
> |
shouldThrow(); |
253 |
> |
} catch (IllegalArgumentException success) {} |
254 |
|
} |
255 |
< |
public void testAddAll3(){ |
255 |
> |
|
256 |
> |
/** |
257 |
> |
* addAll of a collection with any null elements throws NPE after |
258 |
> |
* possibly adding some elements |
259 |
> |
*/ |
260 |
> |
public void testAddAll3() { |
261 |
|
try { |
262 |
|
DelayQueue q = new DelayQueue(); |
263 |
< |
PDelay[] ints = new PDelay[N]; |
264 |
< |
for (int i = 0; i < N-1; ++i) |
263 |
> |
PDelay[] ints = new PDelay[SIZE]; |
264 |
> |
for (int i = 0; i < SIZE-1; ++i) |
265 |
|
ints[i] = new PDelay(i); |
266 |
|
q.addAll(Arrays.asList(ints)); |
267 |
< |
fail("Cannot add null elements"); |
268 |
< |
} |
209 |
< |
catch (NullPointerException success) {} |
267 |
> |
shouldThrow(); |
268 |
> |
} catch (NullPointerException success) {} |
269 |
|
} |
270 |
|
|
271 |
< |
public void testAddAll5(){ |
272 |
< |
try { |
273 |
< |
PDelay[] empty = new PDelay[0]; |
274 |
< |
PDelay[] ints = new PDelay[N]; |
275 |
< |
for (int i = N-1; i >= 0; --i) |
276 |
< |
ints[i] = new PDelay(i); |
277 |
< |
DelayQueue q = new DelayQueue(); |
278 |
< |
assertFalse(q.addAll(Arrays.asList(empty))); |
279 |
< |
assertTrue(q.addAll(Arrays.asList(ints))); |
280 |
< |
for (int i = 0; i < N; ++i) |
281 |
< |
assertEquals(ints[i], q.poll()); |
282 |
< |
} |
283 |
< |
finally {} |
271 |
> |
/** |
272 |
> |
* Queue contains all elements of successful addAll |
273 |
> |
*/ |
274 |
> |
public void testAddAll5() { |
275 |
> |
PDelay[] empty = new PDelay[0]; |
276 |
> |
PDelay[] ints = new PDelay[SIZE]; |
277 |
> |
for (int i = SIZE-1; i >= 0; --i) |
278 |
> |
ints[i] = new PDelay(i); |
279 |
> |
DelayQueue q = new DelayQueue(); |
280 |
> |
assertFalse(q.addAll(Arrays.asList(empty))); |
281 |
> |
assertTrue(q.addAll(Arrays.asList(ints))); |
282 |
> |
for (int i = 0; i < SIZE; ++i) |
283 |
> |
assertEquals(ints[i], q.poll()); |
284 |
|
} |
285 |
|
|
286 |
< |
public void testPutNull() { |
287 |
< |
try { |
288 |
< |
DelayQueue q = new DelayQueue(); |
289 |
< |
q.put(null); |
290 |
< |
fail("put should throw NPE"); |
291 |
< |
} |
292 |
< |
catch (NullPointerException success){ |
293 |
< |
} |
294 |
< |
} |
236 |
< |
|
237 |
< |
public void testPut() { |
238 |
< |
try { |
239 |
< |
DelayQueue q = new DelayQueue(); |
240 |
< |
for (int i = 0; i < N; ++i) { |
241 |
< |
PDelay I = new PDelay(i); |
242 |
< |
q.put(I); |
243 |
< |
assertTrue(q.contains(I)); |
244 |
< |
} |
245 |
< |
assertEquals(N, q.size()); |
246 |
< |
} |
247 |
< |
finally { |
286 |
> |
/** |
287 |
> |
* all elements successfully put are contained |
288 |
> |
*/ |
289 |
> |
public void testPut() { |
290 |
> |
DelayQueue q = new DelayQueue(); |
291 |
> |
for (int i = 0; i < SIZE; ++i) { |
292 |
> |
PDelay x = new PDelay(i); |
293 |
> |
q.put(x); |
294 |
> |
assertTrue(q.contains(x)); |
295 |
|
} |
296 |
+ |
assertEquals(SIZE, q.size()); |
297 |
|
} |
298 |
|
|
299 |
< |
public void testPutWithTake() { |
299 |
> |
/** |
300 |
> |
* put doesn't block waiting for take |
301 |
> |
*/ |
302 |
> |
public void testPutWithTake() throws InterruptedException { |
303 |
|
final DelayQueue q = new DelayQueue(); |
304 |
< |
Thread t = new Thread(new Runnable() { |
305 |
< |
public void run(){ |
306 |
< |
int added = 0; |
307 |
< |
try { |
308 |
< |
q.put(new PDelay(0)); |
309 |
< |
++added; |
310 |
< |
q.put(new PDelay(0)); |
311 |
< |
++added; |
312 |
< |
q.put(new PDelay(0)); |
313 |
< |
++added; |
263 |
< |
q.put(new PDelay(0)); |
264 |
< |
++added; |
265 |
< |
assertTrue(added == 4); |
266 |
< |
} finally { |
267 |
< |
} |
268 |
< |
} |
269 |
< |
}); |
270 |
< |
try { |
271 |
< |
t.start(); |
272 |
< |
Thread.sleep(SHORT_DELAY_MS); |
273 |
< |
q.take(); |
274 |
< |
t.interrupt(); |
275 |
< |
t.join(); |
276 |
< |
} catch (Exception e){ |
277 |
< |
fail("Unexpected exception"); |
278 |
< |
} |
304 |
> |
Thread t = newStartedThread(new CheckedRunnable() { |
305 |
> |
public void realRun() { |
306 |
> |
q.put(new PDelay(0)); |
307 |
> |
q.put(new PDelay(0)); |
308 |
> |
q.put(new PDelay(0)); |
309 |
> |
q.put(new PDelay(0)); |
310 |
> |
}}); |
311 |
> |
|
312 |
> |
awaitTermination(t); |
313 |
> |
assertEquals(4, q.size()); |
314 |
|
} |
315 |
|
|
316 |
< |
public void testTimedOffer() { |
316 |
> |
/** |
317 |
> |
* timed offer does not time out |
318 |
> |
*/ |
319 |
> |
public void testTimedOffer() throws InterruptedException { |
320 |
|
final DelayQueue q = new DelayQueue(); |
321 |
< |
Thread t = new Thread(new Runnable() { |
322 |
< |
public void run(){ |
323 |
< |
try { |
324 |
< |
q.put(new PDelay(0)); |
325 |
< |
q.put(new PDelay(0)); |
326 |
< |
assertTrue(q.offer(new PDelay(0), SHORT_DELAY_MS/2, TimeUnit.MILLISECONDS)); |
327 |
< |
assertTrue(q.offer(new PDelay(0), LONG_DELAY_MS, TimeUnit.MILLISECONDS)); |
290 |
< |
} finally { } |
291 |
< |
} |
292 |
< |
}); |
293 |
< |
|
294 |
< |
try { |
295 |
< |
t.start(); |
296 |
< |
Thread.sleep(SHORT_DELAY_MS); |
297 |
< |
t.interrupt(); |
298 |
< |
t.join(); |
299 |
< |
} catch (Exception e){ |
300 |
< |
fail("Unexpected exception"); |
301 |
< |
} |
302 |
< |
} |
321 |
> |
Thread t = newStartedThread(new CheckedRunnable() { |
322 |
> |
public void realRun() throws InterruptedException { |
323 |
> |
q.put(new PDelay(0)); |
324 |
> |
q.put(new PDelay(0)); |
325 |
> |
assertTrue(q.offer(new PDelay(0), SHORT_DELAY_MS, MILLISECONDS)); |
326 |
> |
assertTrue(q.offer(new PDelay(0), LONG_DELAY_MS, MILLISECONDS)); |
327 |
> |
}}); |
328 |
|
|
329 |
< |
public void testTake(){ |
305 |
< |
try { |
306 |
< |
DelayQueue q = fullQueue(N); |
307 |
< |
for (int i = 0; i < N; ++i) { |
308 |
< |
assertEquals(new PDelay(i), ((PDelay)q.take())); |
309 |
< |
} |
310 |
< |
} catch (InterruptedException e){ |
311 |
< |
fail("Unexpected exception"); |
312 |
< |
} |
329 |
> |
awaitTermination(t); |
330 |
|
} |
331 |
|
|
332 |
< |
public void testTakeFromEmpty() { |
333 |
< |
final DelayQueue q = new DelayQueue(); |
334 |
< |
Thread t = new Thread(new Runnable() { |
335 |
< |
public void run(){ |
336 |
< |
try { |
337 |
< |
q.take(); |
338 |
< |
fail("Should block"); |
322 |
< |
} catch (InterruptedException success){ } |
323 |
< |
} |
324 |
< |
}); |
325 |
< |
try { |
326 |
< |
t.start(); |
327 |
< |
Thread.sleep(SHORT_DELAY_MS); |
328 |
< |
t.interrupt(); |
329 |
< |
t.join(); |
330 |
< |
} catch (Exception e){ |
331 |
< |
fail("Unexpected exception"); |
332 |
> |
/** |
333 |
> |
* take retrieves elements in priority order |
334 |
> |
*/ |
335 |
> |
public void testTake() throws InterruptedException { |
336 |
> |
DelayQueue q = populatedQueue(SIZE); |
337 |
> |
for (int i = 0; i < SIZE; ++i) { |
338 |
> |
assertEquals(new PDelay(i), q.take()); |
339 |
|
} |
340 |
|
} |
341 |
|
|
342 |
< |
public void testBlockingTake(){ |
343 |
< |
Thread t = new Thread(new Runnable() { |
344 |
< |
public void run() { |
345 |
< |
try { |
346 |
< |
DelayQueue q = fullQueue(N); |
347 |
< |
for (int i = 0; i < N; ++i) { |
348 |
< |
assertEquals(new PDelay(i), ((PDelay)q.take())); |
349 |
< |
} |
350 |
< |
q.take(); |
351 |
< |
fail("take should block"); |
352 |
< |
} catch (InterruptedException success){ |
346 |
< |
} |
347 |
< |
}}); |
348 |
< |
t.start(); |
349 |
< |
try { |
350 |
< |
Thread.sleep(SHORT_DELAY_MS); |
351 |
< |
t.interrupt(); |
352 |
< |
t.join(); |
353 |
< |
} |
354 |
< |
catch (InterruptedException ie) { |
355 |
< |
fail("Unexpected exception"); |
356 |
< |
} |
357 |
< |
} |
342 |
> |
/** |
343 |
> |
* Take removes existing elements until empty, then blocks interruptibly |
344 |
> |
*/ |
345 |
> |
public void testBlockingTake() throws InterruptedException { |
346 |
> |
final DelayQueue q = populatedQueue(SIZE); |
347 |
> |
final CountDownLatch pleaseInterrupt = new CountDownLatch(1); |
348 |
> |
Thread t = newStartedThread(new CheckedRunnable() { |
349 |
> |
public void realRun() throws InterruptedException { |
350 |
> |
for (int i = 0; i < SIZE; ++i) { |
351 |
> |
assertEquals(new PDelay(i), ((PDelay)q.take())); |
352 |
> |
} |
353 |
|
|
354 |
+ |
Thread.currentThread().interrupt(); |
355 |
+ |
try { |
356 |
+ |
q.take(); |
357 |
+ |
shouldThrow(); |
358 |
+ |
} catch (InterruptedException success) {} |
359 |
+ |
assertFalse(Thread.interrupted()); |
360 |
|
|
361 |
< |
public void testPoll(){ |
362 |
< |
DelayQueue q = fullQueue(N); |
363 |
< |
for (int i = 0; i < N; ++i) { |
364 |
< |
assertEquals(new PDelay(i), ((PDelay)q.poll())); |
365 |
< |
} |
366 |
< |
assertNull(q.poll()); |
361 |
> |
pleaseInterrupt.countDown(); |
362 |
> |
try { |
363 |
> |
q.take(); |
364 |
> |
shouldThrow(); |
365 |
> |
} catch (InterruptedException success) {} |
366 |
> |
assertFalse(Thread.interrupted()); |
367 |
> |
}}); |
368 |
> |
|
369 |
> |
await(pleaseInterrupt); |
370 |
> |
assertThreadStaysAlive(t); |
371 |
> |
t.interrupt(); |
372 |
> |
awaitTermination(t); |
373 |
|
} |
374 |
|
|
375 |
< |
public void testTimedPoll0() { |
376 |
< |
try { |
377 |
< |
DelayQueue q = fullQueue(N); |
378 |
< |
for (int i = 0; i < N; ++i) { |
379 |
< |
assertEquals(new PDelay(i), ((PDelay)q.poll(0, TimeUnit.MILLISECONDS))); |
380 |
< |
} |
381 |
< |
assertNull(q.poll(0, TimeUnit.MILLISECONDS)); |
382 |
< |
} catch (InterruptedException e){ |
383 |
< |
fail("Unexpected exception"); |
377 |
< |
} |
375 |
> |
/** |
376 |
> |
* poll succeeds unless empty |
377 |
> |
*/ |
378 |
> |
public void testPoll() { |
379 |
> |
DelayQueue q = populatedQueue(SIZE); |
380 |
> |
for (int i = 0; i < SIZE; ++i) { |
381 |
> |
assertEquals(new PDelay(i), q.poll()); |
382 |
> |
} |
383 |
> |
assertNull(q.poll()); |
384 |
|
} |
385 |
|
|
386 |
< |
public void testTimedPoll() { |
387 |
< |
try { |
388 |
< |
DelayQueue q = fullQueue(N); |
389 |
< |
for (int i = 0; i < N; ++i) { |
390 |
< |
assertEquals(new PDelay(i), ((PDelay)q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS))); |
391 |
< |
} |
392 |
< |
assertNull(q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS)); |
387 |
< |
} catch (InterruptedException e){ |
388 |
< |
fail("Unexpected exception"); |
389 |
< |
} |
390 |
< |
} |
391 |
< |
|
392 |
< |
public void testInterruptedTimedPoll(){ |
393 |
< |
Thread t = new Thread(new Runnable() { |
394 |
< |
public void run() { |
395 |
< |
try { |
396 |
< |
DelayQueue q = fullQueue(N); |
397 |
< |
for (int i = 0; i < N; ++i) { |
398 |
< |
assertEquals(new PDelay(i), ((PDelay)q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS))); |
399 |
< |
} |
400 |
< |
assertNull(q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS)); |
401 |
< |
} catch (InterruptedException success){ |
402 |
< |
} |
403 |
< |
}}); |
404 |
< |
t.start(); |
405 |
< |
try { |
406 |
< |
Thread.sleep(SHORT_DELAY_MS); |
407 |
< |
t.interrupt(); |
408 |
< |
t.join(); |
409 |
< |
} |
410 |
< |
catch (InterruptedException ie) { |
411 |
< |
fail("Unexpected exception"); |
386 |
> |
/** |
387 |
> |
* timed poll with zero timeout succeeds when non-empty, else times out |
388 |
> |
*/ |
389 |
> |
public void testTimedPoll0() throws InterruptedException { |
390 |
> |
DelayQueue q = populatedQueue(SIZE); |
391 |
> |
for (int i = 0; i < SIZE; ++i) { |
392 |
> |
assertEquals(new PDelay(i), q.poll(0, MILLISECONDS)); |
393 |
|
} |
394 |
+ |
assertNull(q.poll(0, MILLISECONDS)); |
395 |
|
} |
396 |
|
|
397 |
< |
public void testTimedPollWithOffer(){ |
398 |
< |
final DelayQueue q = new DelayQueue(); |
399 |
< |
Thread t = new Thread(new Runnable() { |
400 |
< |
public void run(){ |
401 |
< |
try { |
402 |
< |
assertNull(q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS)); |
403 |
< |
q.poll(LONG_DELAY_MS, TimeUnit.MILLISECONDS); |
404 |
< |
q.poll(LONG_DELAY_MS, TimeUnit.MILLISECONDS); |
405 |
< |
fail("Should block"); |
406 |
< |
} catch (InterruptedException success) { } |
397 |
> |
/** |
398 |
> |
* timed poll with nonzero timeout succeeds when non-empty, else times out |
399 |
> |
*/ |
400 |
> |
public void testTimedPoll() throws InterruptedException { |
401 |
> |
DelayQueue q = populatedQueue(SIZE); |
402 |
> |
for (int i = 0; i < SIZE; ++i) { |
403 |
> |
long startTime = System.nanoTime(); |
404 |
> |
assertEquals(new PDelay(i), q.poll(LONG_DELAY_MS, MILLISECONDS)); |
405 |
> |
assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS); |
406 |
> |
} |
407 |
> |
long startTime = System.nanoTime(); |
408 |
> |
assertNull(q.poll(timeoutMillis(), MILLISECONDS)); |
409 |
> |
assertTrue(millisElapsedSince(startTime) >= timeoutMillis()); |
410 |
> |
checkEmpty(q); |
411 |
> |
} |
412 |
> |
|
413 |
> |
/** |
414 |
> |
* Interrupted timed poll throws InterruptedException instead of |
415 |
> |
* returning timeout status |
416 |
> |
*/ |
417 |
> |
public void testInterruptedTimedPoll() throws InterruptedException { |
418 |
> |
final CountDownLatch pleaseInterrupt = new CountDownLatch(1); |
419 |
> |
Thread t = newStartedThread(new CheckedRunnable() { |
420 |
> |
public void realRun() throws InterruptedException { |
421 |
> |
DelayQueue q = populatedQueue(SIZE); |
422 |
> |
for (int i = 0; i < SIZE; ++i) { |
423 |
> |
assertEquals(new PDelay(i), ((PDelay)q.poll(SHORT_DELAY_MS, MILLISECONDS))); |
424 |
|
} |
426 |
– |
}); |
427 |
– |
try { |
428 |
– |
t.start(); |
429 |
– |
Thread.sleep(SHORT_DELAY_MS * 2); |
430 |
– |
assertTrue(q.offer(new PDelay(0), SHORT_DELAY_MS, TimeUnit.MILLISECONDS)); |
431 |
– |
t.interrupt(); |
432 |
– |
t.join(); |
433 |
– |
} catch (Exception e){ |
434 |
– |
fail("Unexpected exception"); |
435 |
– |
} |
436 |
– |
} |
425 |
|
|
426 |
+ |
Thread.currentThread().interrupt(); |
427 |
+ |
try { |
428 |
+ |
q.poll(LONG_DELAY_MS, MILLISECONDS); |
429 |
+ |
shouldThrow(); |
430 |
+ |
} catch (InterruptedException success) {} |
431 |
+ |
assertFalse(Thread.interrupted()); |
432 |
|
|
433 |
< |
public void testPeek(){ |
434 |
< |
DelayQueue q = fullQueue(N); |
435 |
< |
for (int i = 0; i < N; ++i) { |
436 |
< |
assertEquals(new PDelay(i), ((PDelay)q.peek())); |
437 |
< |
q.poll(); |
438 |
< |
assertTrue(q.peek() == null || |
439 |
< |
i != ((PDelay)q.peek()).intValue()); |
433 |
> |
pleaseInterrupt.countDown(); |
434 |
> |
try { |
435 |
> |
q.poll(LONG_DELAY_MS, MILLISECONDS); |
436 |
> |
shouldThrow(); |
437 |
> |
} catch (InterruptedException success) {} |
438 |
> |
assertFalse(Thread.interrupted()); |
439 |
> |
}}); |
440 |
> |
|
441 |
> |
await(pleaseInterrupt); |
442 |
> |
assertThreadStaysAlive(t); |
443 |
> |
t.interrupt(); |
444 |
> |
awaitTermination(t); |
445 |
> |
} |
446 |
> |
|
447 |
> |
/** |
448 |
> |
* peek returns next element, or null if empty |
449 |
> |
*/ |
450 |
> |
public void testPeek() { |
451 |
> |
DelayQueue q = populatedQueue(SIZE); |
452 |
> |
for (int i = 0; i < SIZE; ++i) { |
453 |
> |
assertEquals(new PDelay(i), q.peek()); |
454 |
> |
assertEquals(new PDelay(i), q.poll()); |
455 |
> |
if (q.isEmpty()) |
456 |
> |
assertNull(q.peek()); |
457 |
> |
else |
458 |
> |
assertFalse(new PDelay(i).equals(q.peek())); |
459 |
|
} |
460 |
< |
assertNull(q.peek()); |
460 |
> |
assertNull(q.peek()); |
461 |
|
} |
462 |
|
|
463 |
< |
public void testElement(){ |
464 |
< |
DelayQueue q = fullQueue(N); |
465 |
< |
for (int i = 0; i < N; ++i) { |
466 |
< |
assertEquals(new PDelay(i), ((PDelay)q.element())); |
463 |
> |
/** |
464 |
> |
* element returns next element, or throws NSEE if empty |
465 |
> |
*/ |
466 |
> |
public void testElement() { |
467 |
> |
DelayQueue q = populatedQueue(SIZE); |
468 |
> |
for (int i = 0; i < SIZE; ++i) { |
469 |
> |
assertEquals(new PDelay(i), q.element()); |
470 |
|
q.poll(); |
471 |
|
} |
472 |
|
try { |
473 |
|
q.element(); |
474 |
< |
fail("no such element"); |
475 |
< |
} |
460 |
< |
catch (NoSuchElementException success) {} |
474 |
> |
shouldThrow(); |
475 |
> |
} catch (NoSuchElementException success) {} |
476 |
|
} |
477 |
|
|
478 |
< |
public void testRemove(){ |
479 |
< |
DelayQueue q = fullQueue(N); |
480 |
< |
for (int i = 0; i < N; ++i) { |
481 |
< |
assertEquals(new PDelay(i), ((PDelay)q.remove())); |
478 |
> |
/** |
479 |
> |
* remove removes next element, or throws NSEE if empty |
480 |
> |
*/ |
481 |
> |
public void testRemove() { |
482 |
> |
DelayQueue q = populatedQueue(SIZE); |
483 |
> |
for (int i = 0; i < SIZE; ++i) { |
484 |
> |
assertEquals(new PDelay(i), q.remove()); |
485 |
|
} |
486 |
|
try { |
487 |
|
q.remove(); |
488 |
< |
fail("remove should throw"); |
489 |
< |
} catch (NoSuchElementException success){ |
490 |
< |
} |
491 |
< |
} |
492 |
< |
|
493 |
< |
public void testRemoveElement(){ |
494 |
< |
DelayQueue q = fullQueue(N); |
495 |
< |
for (int i = 1; i < N; i+=2) { |
496 |
< |
assertTrue(q.remove(new PDelay(i))); |
497 |
< |
} |
480 |
< |
for (int i = 0; i < N; i+=2) { |
481 |
< |
assertTrue(q.remove(new PDelay(i))); |
482 |
< |
assertFalse(q.remove(new PDelay(i+1))); |
483 |
< |
} |
484 |
< |
assert(q.isEmpty()); |
485 |
< |
} |
486 |
< |
|
487 |
< |
public void testContains(){ |
488 |
< |
DelayQueue q = fullQueue(N); |
489 |
< |
for (int i = 0; i < N; ++i) { |
488 |
> |
shouldThrow(); |
489 |
> |
} catch (NoSuchElementException success) {} |
490 |
> |
} |
491 |
> |
|
492 |
> |
/** |
493 |
> |
* contains(x) reports true when elements added but not yet removed |
494 |
> |
*/ |
495 |
> |
public void testContains() { |
496 |
> |
DelayQueue q = populatedQueue(SIZE); |
497 |
> |
for (int i = 0; i < SIZE; ++i) { |
498 |
|
assertTrue(q.contains(new PDelay(i))); |
499 |
|
q.poll(); |
500 |
|
assertFalse(q.contains(new PDelay(i))); |
501 |
|
} |
502 |
|
} |
503 |
|
|
504 |
< |
public void testClear(){ |
505 |
< |
DelayQueue q = fullQueue(N); |
504 |
> |
/** |
505 |
> |
* clear removes all elements |
506 |
> |
*/ |
507 |
> |
public void testClear() { |
508 |
> |
DelayQueue q = populatedQueue(SIZE); |
509 |
|
q.clear(); |
510 |
|
assertTrue(q.isEmpty()); |
511 |
|
assertEquals(0, q.size()); |
512 |
|
assertEquals(NOCAP, q.remainingCapacity()); |
513 |
< |
q.add(new PDelay(1)); |
513 |
> |
PDelay x = new PDelay(1); |
514 |
> |
q.add(x); |
515 |
|
assertFalse(q.isEmpty()); |
516 |
+ |
assertTrue(q.contains(x)); |
517 |
|
q.clear(); |
518 |
|
assertTrue(q.isEmpty()); |
519 |
|
} |
520 |
|
|
521 |
< |
public void testContainsAll(){ |
522 |
< |
DelayQueue q = fullQueue(N); |
521 |
> |
/** |
522 |
> |
* containsAll(c) is true when c contains a subset of elements |
523 |
> |
*/ |
524 |
> |
public void testContainsAll() { |
525 |
> |
DelayQueue q = populatedQueue(SIZE); |
526 |
|
DelayQueue p = new DelayQueue(); |
527 |
< |
for (int i = 0; i < N; ++i) { |
527 |
> |
for (int i = 0; i < SIZE; ++i) { |
528 |
|
assertTrue(q.containsAll(p)); |
529 |
|
assertFalse(p.containsAll(q)); |
530 |
|
p.add(new PDelay(i)); |
532 |
|
assertTrue(p.containsAll(q)); |
533 |
|
} |
534 |
|
|
535 |
< |
public void testRetainAll(){ |
536 |
< |
DelayQueue q = fullQueue(N); |
537 |
< |
DelayQueue p = fullQueue(N); |
538 |
< |
for (int i = 0; i < N; ++i) { |
535 |
> |
/** |
536 |
> |
* retainAll(c) retains only those elements of c and reports true if changed |
537 |
> |
*/ |
538 |
> |
public void testRetainAll() { |
539 |
> |
DelayQueue q = populatedQueue(SIZE); |
540 |
> |
DelayQueue p = populatedQueue(SIZE); |
541 |
> |
for (int i = 0; i < SIZE; ++i) { |
542 |
|
boolean changed = q.retainAll(p); |
543 |
|
if (i == 0) |
544 |
|
assertFalse(changed); |
546 |
|
assertTrue(changed); |
547 |
|
|
548 |
|
assertTrue(q.containsAll(p)); |
549 |
< |
assertEquals(N-i, q.size()); |
549 |
> |
assertEquals(SIZE-i, q.size()); |
550 |
|
p.remove(); |
551 |
|
} |
552 |
|
} |
553 |
|
|
554 |
< |
public void testRemoveAll(){ |
555 |
< |
for (int i = 1; i < N; ++i) { |
556 |
< |
DelayQueue q = fullQueue(N); |
557 |
< |
DelayQueue p = fullQueue(i); |
554 |
> |
/** |
555 |
> |
* removeAll(c) removes only those elements of c and reports true if changed |
556 |
> |
*/ |
557 |
> |
public void testRemoveAll() { |
558 |
> |
for (int i = 1; i < SIZE; ++i) { |
559 |
> |
DelayQueue q = populatedQueue(SIZE); |
560 |
> |
DelayQueue p = populatedQueue(i); |
561 |
|
assertTrue(q.removeAll(p)); |
562 |
< |
assertEquals(N-i, q.size()); |
562 |
> |
assertEquals(SIZE-i, q.size()); |
563 |
|
for (int j = 0; j < i; ++j) { |
564 |
< |
PDelay I = (PDelay)(p.remove()); |
565 |
< |
assertFalse(q.contains(I)); |
564 |
> |
PDelay x = (PDelay)(p.remove()); |
565 |
> |
assertFalse(q.contains(x)); |
566 |
|
} |
567 |
|
} |
568 |
|
} |
569 |
|
|
570 |
< |
/* |
571 |
< |
public void testEqualsAndHashCode(){ |
572 |
< |
DelayQueue q1 = fullQueue(N); |
573 |
< |
DelayQueue q2 = fullQueue(N); |
574 |
< |
assertTrue(q1.equals(q2)); |
575 |
< |
assertTrue(q2.equals(q1)); |
554 |
< |
assertEquals(q1.hashCode(), q2.hashCode()); |
555 |
< |
q1.remove(); |
556 |
< |
assertFalse(q1.equals(q2)); |
557 |
< |
assertFalse(q2.equals(q1)); |
558 |
< |
assertFalse(q1.hashCode() == q2.hashCode()); |
559 |
< |
q2.remove(); |
560 |
< |
assertTrue(q1.equals(q2)); |
561 |
< |
assertTrue(q2.equals(q1)); |
562 |
< |
assertEquals(q1.hashCode(), q2.hashCode()); |
563 |
< |
} |
564 |
< |
*/ |
565 |
< |
|
566 |
< |
public void testToArray(){ |
567 |
< |
DelayQueue q = fullQueue(N); |
568 |
< |
Object[] o = q.toArray(); |
570 |
> |
/** |
571 |
> |
* toArray contains all elements |
572 |
> |
*/ |
573 |
> |
public void testToArray() throws InterruptedException { |
574 |
> |
DelayQueue q = populatedQueue(SIZE); |
575 |
> |
Object[] o = q.toArray(); |
576 |
|
Arrays.sort(o); |
577 |
< |
try { |
578 |
< |
for(int i = 0; i < o.length; i++) |
572 |
< |
assertEquals(o[i], q.take()); |
573 |
< |
} catch (InterruptedException e){ |
574 |
< |
fail("Unexpected exception"); |
575 |
< |
} |
577 |
> |
for (int i = 0; i < o.length; i++) |
578 |
> |
assertSame(o[i], q.take()); |
579 |
|
} |
580 |
|
|
581 |
< |
public void testToArray2(){ |
582 |
< |
DelayQueue q = fullQueue(N); |
583 |
< |
PDelay[] ints = new PDelay[N]; |
584 |
< |
ints = (PDelay[])q.toArray(ints); |
581 |
> |
/** |
582 |
> |
* toArray(a) contains all elements |
583 |
> |
*/ |
584 |
> |
public void testToArray2() { |
585 |
> |
DelayQueue<PDelay> q = populatedQueue(SIZE); |
586 |
> |
PDelay[] ints = new PDelay[SIZE]; |
587 |
> |
PDelay[] array = q.toArray(ints); |
588 |
> |
assertSame(ints, array); |
589 |
|
Arrays.sort(ints); |
590 |
< |
try { |
591 |
< |
for(int i = 0; i < ints.length; i++) |
592 |
< |
assertEquals(ints[i], q.take()); |
593 |
< |
} catch (InterruptedException e){ |
594 |
< |
fail("Unexpected exception"); |
595 |
< |
} |
596 |
< |
} |
597 |
< |
|
598 |
< |
public void testIterator(){ |
599 |
< |
DelayQueue q = fullQueue(N); |
590 |
> |
for (int i = 0; i < ints.length; i++) |
591 |
> |
assertSame(ints[i], q.remove()); |
592 |
> |
} |
593 |
> |
|
594 |
> |
/** |
595 |
> |
* toArray(incompatible array type) throws ArrayStoreException |
596 |
> |
*/ |
597 |
> |
public void testToArray1_BadArg() { |
598 |
> |
DelayQueue q = populatedQueue(SIZE); |
599 |
> |
try { |
600 |
> |
q.toArray(new String[10]); |
601 |
> |
shouldThrow(); |
602 |
> |
} catch (ArrayStoreException success) {} |
603 |
> |
} |
604 |
> |
|
605 |
> |
/** |
606 |
> |
* iterator iterates through all elements |
607 |
> |
*/ |
608 |
> |
public void testIterator() { |
609 |
> |
DelayQueue q = populatedQueue(SIZE); |
610 |
|
int i = 0; |
611 |
< |
Iterator it = q.iterator(); |
612 |
< |
while(it.hasNext()) { |
611 |
> |
Iterator it = q.iterator(); |
612 |
> |
while (it.hasNext()) { |
613 |
|
assertTrue(q.contains(it.next())); |
614 |
|
++i; |
615 |
|
} |
616 |
< |
assertEquals(i, N); |
616 |
> |
assertEquals(i, SIZE); |
617 |
> |
assertIteratorExhausted(it); |
618 |
|
} |
619 |
|
|
620 |
< |
public void testIteratorRemove () { |
620 |
> |
/** |
621 |
> |
* iterator of empty collection has no elements |
622 |
> |
*/ |
623 |
> |
public void testEmptyIterator() { |
624 |
> |
assertIteratorExhausted(new DelayQueue().iterator()); |
625 |
> |
} |
626 |
|
|
627 |
+ |
/** |
628 |
+ |
* iterator.remove removes current element |
629 |
+ |
*/ |
630 |
+ |
public void testIteratorRemove() { |
631 |
|
final DelayQueue q = new DelayQueue(); |
605 |
– |
|
632 |
|
q.add(new PDelay(2)); |
633 |
|
q.add(new PDelay(1)); |
634 |
|
q.add(new PDelay(3)); |
609 |
– |
|
635 |
|
Iterator it = q.iterator(); |
636 |
|
it.next(); |
637 |
|
it.remove(); |
613 |
– |
|
638 |
|
it = q.iterator(); |
639 |
< |
assertEquals(it.next(), new PDelay(2)); |
640 |
< |
assertEquals(it.next(), new PDelay(3)); |
639 |
> |
assertEquals(new PDelay(2), it.next()); |
640 |
> |
assertEquals(new PDelay(3), it.next()); |
641 |
|
assertFalse(it.hasNext()); |
642 |
|
} |
643 |
|
|
644 |
< |
|
645 |
< |
public void testToString(){ |
646 |
< |
DelayQueue q = fullQueue(N); |
644 |
> |
/** |
645 |
> |
* toString contains toStrings of elements |
646 |
> |
*/ |
647 |
> |
public void testToString() { |
648 |
> |
DelayQueue q = populatedQueue(SIZE); |
649 |
|
String s = q.toString(); |
650 |
< |
for (int i = 0; i < N; ++i) { |
651 |
< |
assertTrue(s.indexOf(String.valueOf(i)) >= 0); |
652 |
< |
} |
627 |
< |
} |
650 |
> |
for (Object e : q) |
651 |
> |
assertTrue(s.contains(e.toString())); |
652 |
> |
} |
653 |
|
|
654 |
+ |
/** |
655 |
+ |
* timed poll transfers elements across Executor tasks |
656 |
+ |
*/ |
657 |
|
public void testPollInExecutor() { |
630 |
– |
|
658 |
|
final DelayQueue q = new DelayQueue(); |
659 |
< |
|
659 |
> |
final CheckedBarrier threadsStarted = new CheckedBarrier(2); |
660 |
|
ExecutorService executor = Executors.newFixedThreadPool(2); |
661 |
+ |
executor.execute(new CheckedRunnable() { |
662 |
+ |
public void realRun() throws InterruptedException { |
663 |
+ |
assertNull(q.poll()); |
664 |
+ |
threadsStarted.await(); |
665 |
+ |
assertNotNull(q.poll(LONG_DELAY_MS, MILLISECONDS)); |
666 |
+ |
checkEmpty(q); |
667 |
+ |
}}); |
668 |
+ |
|
669 |
+ |
executor.execute(new CheckedRunnable() { |
670 |
+ |
public void realRun() throws InterruptedException { |
671 |
+ |
threadsStarted.await(); |
672 |
+ |
q.put(new PDelay(1)); |
673 |
+ |
}}); |
674 |
|
|
675 |
< |
executor.execute(new Runnable() { |
636 |
< |
public void run() { |
637 |
< |
assertNull("poll should fail", q.poll()); |
638 |
< |
try { |
639 |
< |
assertTrue(null != q.poll(MEDIUM_DELAY_MS * 2, TimeUnit.MILLISECONDS)); |
640 |
< |
assertTrue(q.isEmpty()); |
641 |
< |
} |
642 |
< |
catch (InterruptedException e) { |
643 |
< |
fail("should not be interrupted"); |
644 |
< |
} |
645 |
< |
} |
646 |
< |
}); |
647 |
< |
|
648 |
< |
executor.execute(new Runnable() { |
649 |
< |
public void run() { |
650 |
< |
try { |
651 |
< |
Thread.sleep(MEDIUM_DELAY_MS); |
652 |
< |
q.put(new PDelay(1)); |
653 |
< |
} |
654 |
< |
catch (InterruptedException e) { |
655 |
< |
fail("should not be interrupted"); |
656 |
< |
} |
657 |
< |
} |
658 |
< |
}); |
659 |
< |
|
660 |
< |
executor.shutdown(); |
661 |
< |
|
675 |
> |
joinPool(executor); |
676 |
|
} |
677 |
|
|
678 |
< |
static class NanoDelay implements Delayed { |
679 |
< |
long trigger; |
680 |
< |
NanoDelay(long i) { |
681 |
< |
trigger = System.nanoTime() + i; |
682 |
< |
} |
683 |
< |
public int compareTo(Object y) { |
684 |
< |
long i = trigger; |
685 |
< |
long j = ((NanoDelay)y).trigger; |
686 |
< |
if (i < j) return -1; |
687 |
< |
if (i > j) return 1; |
688 |
< |
return 0; |
689 |
< |
} |
690 |
< |
|
691 |
< |
public int compareTo(NanoDelay y) { |
692 |
< |
long i = trigger; |
693 |
< |
long j = ((NanoDelay)y).trigger; |
680 |
< |
if (i < j) return -1; |
681 |
< |
if (i > j) return 1; |
682 |
< |
return 0; |
683 |
< |
} |
684 |
< |
|
685 |
< |
public boolean equals(Object other) { |
686 |
< |
return ((NanoDelay)other).trigger == trigger; |
687 |
< |
} |
688 |
< |
public boolean equals(NanoDelay other) { |
689 |
< |
return ((NanoDelay)other).trigger == trigger; |
678 |
> |
/** |
679 |
> |
* Delayed actions do not occur until their delay elapses |
680 |
> |
*/ |
681 |
> |
public void testDelay() throws InterruptedException { |
682 |
> |
DelayQueue<NanoDelay> q = new DelayQueue<NanoDelay>(); |
683 |
> |
for (int i = 0; i < SIZE; ++i) |
684 |
> |
q.add(new NanoDelay(1000000L * (SIZE - i))); |
685 |
> |
|
686 |
> |
long last = 0; |
687 |
> |
for (int i = 0; i < SIZE; ++i) { |
688 |
> |
NanoDelay e = q.take(); |
689 |
> |
long tt = e.getTriggerTime(); |
690 |
> |
assertTrue(System.nanoTime() - tt >= 0); |
691 |
> |
if (i != 0) |
692 |
> |
assertTrue(tt >= last); |
693 |
> |
last = tt; |
694 |
|
} |
695 |
+ |
assertTrue(q.isEmpty()); |
696 |
+ |
} |
697 |
|
|
698 |
< |
public long getDelay(TimeUnit unit) { |
699 |
< |
long n = trigger - System.nanoTime(); |
700 |
< |
return unit.convert(n, TimeUnit.NANOSECONDS); |
701 |
< |
} |
698 |
> |
/** |
699 |
> |
* peek of a non-empty queue returns non-null even if not expired |
700 |
> |
*/ |
701 |
> |
public void testPeekDelayed() { |
702 |
> |
DelayQueue q = new DelayQueue(); |
703 |
> |
q.add(new NanoDelay(Long.MAX_VALUE)); |
704 |
> |
assertNotNull(q.peek()); |
705 |
> |
} |
706 |
|
|
707 |
< |
public long getTriggerTime() { |
708 |
< |
return trigger; |
709 |
< |
} |
707 |
> |
/** |
708 |
> |
* poll of a non-empty queue returns null if no expired elements. |
709 |
> |
*/ |
710 |
> |
public void testPollDelayed() { |
711 |
> |
DelayQueue q = new DelayQueue(); |
712 |
> |
q.add(new NanoDelay(Long.MAX_VALUE)); |
713 |
> |
assertNull(q.poll()); |
714 |
> |
} |
715 |
|
|
716 |
< |
public String toString() { |
717 |
< |
return String.valueOf(trigger); |
718 |
< |
} |
716 |
> |
/** |
717 |
> |
* timed poll of a non-empty queue returns null if no expired elements. |
718 |
> |
*/ |
719 |
> |
public void testTimedPollDelayed() throws InterruptedException { |
720 |
> |
DelayQueue q = new DelayQueue(); |
721 |
> |
q.add(new NanoDelay(LONG_DELAY_MS * 1000000L)); |
722 |
> |
assertNull(q.poll(timeoutMillis(), MILLISECONDS)); |
723 |
|
} |
724 |
|
|
725 |
< |
public void testDelay() { |
725 |
> |
/** |
726 |
> |
* drainTo(c) empties queue into another collection c |
727 |
> |
*/ |
728 |
> |
public void testDrainTo() { |
729 |
|
DelayQueue q = new DelayQueue(); |
730 |
< |
NanoDelay[] elements = new NanoDelay[N]; |
731 |
< |
for (int i = 0; i < N; ++i) { |
732 |
< |
elements[i] = new NanoDelay(1000000000L + 1000000L * (N - i)); |
733 |
< |
} |
712 |
< |
for (int i = 0; i < N; ++i) { |
713 |
< |
q.add(elements[i]); |
730 |
> |
PDelay[] elems = new PDelay[SIZE]; |
731 |
> |
for (int i = 0; i < SIZE; ++i) { |
732 |
> |
elems[i] = new PDelay(i); |
733 |
> |
q.add(elems[i]); |
734 |
|
} |
735 |
+ |
ArrayList l = new ArrayList(); |
736 |
+ |
q.drainTo(l); |
737 |
+ |
assertEquals(0, q.size()); |
738 |
+ |
for (int i = 0; i < SIZE; ++i) |
739 |
+ |
assertEquals(elems[i], l.get(i)); |
740 |
+ |
q.add(elems[0]); |
741 |
+ |
q.add(elems[1]); |
742 |
+ |
assertFalse(q.isEmpty()); |
743 |
+ |
assertTrue(q.contains(elems[0])); |
744 |
+ |
assertTrue(q.contains(elems[1])); |
745 |
+ |
l.clear(); |
746 |
+ |
q.drainTo(l); |
747 |
+ |
assertEquals(0, q.size()); |
748 |
+ |
assertEquals(2, l.size()); |
749 |
+ |
for (int i = 0; i < 2; ++i) |
750 |
+ |
assertEquals(elems[i], l.get(i)); |
751 |
+ |
} |
752 |
|
|
753 |
< |
try { |
754 |
< |
long last = 0; |
755 |
< |
for (int i = 0; i < N; ++i) { |
756 |
< |
NanoDelay e = (NanoDelay)(q.take()); |
757 |
< |
long tt = e.getTriggerTime(); |
758 |
< |
assertTrue(tt <= System.nanoTime()); |
759 |
< |
if (i != 0) |
760 |
< |
assertTrue(tt >= last); |
761 |
< |
last = tt; |
762 |
< |
} |
763 |
< |
} |
764 |
< |
catch(InterruptedException ie) { |
765 |
< |
fail("Unexpected Exception"); |
753 |
> |
/** |
754 |
> |
* drainTo empties queue |
755 |
> |
*/ |
756 |
> |
public void testDrainToWithActivePut() throws InterruptedException { |
757 |
> |
final DelayQueue q = populatedQueue(SIZE); |
758 |
> |
Thread t = new Thread(new CheckedRunnable() { |
759 |
> |
public void realRun() { |
760 |
> |
q.put(new PDelay(SIZE+1)); |
761 |
> |
}}); |
762 |
> |
|
763 |
> |
t.start(); |
764 |
> |
ArrayList l = new ArrayList(); |
765 |
> |
q.drainTo(l); |
766 |
> |
assertTrue(l.size() >= SIZE); |
767 |
> |
t.join(); |
768 |
> |
assertTrue(q.size() + l.size() >= SIZE); |
769 |
> |
} |
770 |
> |
|
771 |
> |
/** |
772 |
> |
* drainTo(c, n) empties first min(n, size) elements of queue into c |
773 |
> |
*/ |
774 |
> |
public void testDrainToN() { |
775 |
> |
for (int i = 0; i < SIZE + 2; ++i) { |
776 |
> |
DelayQueue q = populatedQueue(SIZE); |
777 |
> |
ArrayList l = new ArrayList(); |
778 |
> |
q.drainTo(l, i); |
779 |
> |
int k = (i < SIZE) ? i : SIZE; |
780 |
> |
assertEquals(SIZE-k, q.size()); |
781 |
> |
assertEquals(k, l.size()); |
782 |
|
} |
783 |
|
} |
784 |
|
|
785 |
+ |
/** |
786 |
+ |
* remove(null), contains(null) always return false |
787 |
+ |
*/ |
788 |
+ |
public void testNeverContainsNull() { |
789 |
+ |
Collection<?> q = populatedQueue(SIZE); |
790 |
+ |
assertFalse(q.contains(null)); |
791 |
+ |
assertFalse(q.remove(null)); |
792 |
+ |
} |
793 |
|
} |