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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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main(suite(), args); |
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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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class Implementation implements CollectionImplementation { |
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public Class<?> klazz() { return DelayQueue.class; } |
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public Collection emptyCollection() { return new DelayQueue(); } |
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public Object makeElement(int i) { return new PDelay(i); } |
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public boolean isConcurrent() { return true; } |
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public boolean permitsNulls() { return false; } |
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} |
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return newTestSuite(DelayQueueTest.class, |
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new Generic().testSuite(), |
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CollectionTest.testSuite(new Implementation())); |
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} |
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|
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/** |
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* A fake Delayed implementation for testing. |
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* Most tests use PDelays, 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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final int pseudodelay; |
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PDelay(int pseudodelay) { this.pseudodelay = pseudodelay; } |
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public int compareTo(Delayed y) { |
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return Integer.compare(this.pseudodelay, ((PDelay)y).pseudodelay); |
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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 (long) 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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// 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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/** |
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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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final 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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|
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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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} |
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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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if (i < j) return -1; |
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if (i > j) return 1; |
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return 0; |
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public int compareTo(Delayed y) { |
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return Long.compare(trigger, ((NanoDelay)y).trigger); |
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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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} |
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public boolean equals(PDelay other) { |
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return ((PDelay)other).pseudodelay == pseudodelay; |
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return (other instanceof NanoDelay) && |
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this.trigger == ((NanoDelay)other).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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* PDelays 0 ... n. |
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* Returns a new queue of given size containing consecutive |
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* PDelays 0 ... n - 1. |
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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 static DelayQueue<PDelay> populatedQueue(int n) { |
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DelayQueue<PDelay> q = new DelayQueue<>(); |
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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(Integer.MAX_VALUE, q.remainingCapacity()); |
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assertEquals(n, q.size()); |
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assertEquals(new PDelay(0), q.peek()); |
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return q; |
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} |
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|
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public void testConstructor1(){ |
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assertEquals(NOCAP, new DelayQueue().remainingCapacity()); |
92 |
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} |
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|
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public void testConstructor3(){ |
132 |
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/** |
133 |
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* A new queue has unbounded capacity |
134 |
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*/ |
135 |
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public void testConstructor1() { |
136 |
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assertEquals(Integer.MAX_VALUE, new DelayQueue().remainingCapacity()); |
137 |
> |
} |
138 |
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|
139 |
+ |
/** |
140 |
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* Initializing from null Collection throws NPE |
141 |
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*/ |
142 |
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public void testConstructor3() { |
143 |
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try { |
144 |
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DelayQueue q = new DelayQueue(null); |
145 |
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fail("Cannot make from null collection"); |
146 |
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} |
100 |
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catch (NullPointerException success) {} |
144 |
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new DelayQueue(null); |
145 |
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shouldThrow(); |
146 |
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} catch (NullPointerException success) {} |
147 |
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} |
148 |
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|
149 |
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public void testConstructor4(){ |
149 |
> |
/** |
150 |
> |
* Initializing from Collection of null elements throws NPE |
151 |
> |
*/ |
152 |
> |
public void testConstructor4() { |
153 |
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try { |
154 |
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PDelay[] ints = new PDelay[N]; |
155 |
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DelayQueue q = new DelayQueue(Arrays.asList(ints)); |
156 |
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fail("Cannot make with null elements"); |
108 |
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} |
109 |
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catch (NullPointerException success) {} |
154 |
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new DelayQueue(Arrays.asList(new PDelay[SIZE])); |
155 |
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shouldThrow(); |
156 |
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} catch (NullPointerException success) {} |
157 |
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} |
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|
159 |
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public void testConstructor5(){ |
160 |
< |
try { |
161 |
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PDelay[] ints = new PDelay[N]; |
162 |
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for (int i = 0; i < N-1; ++i) |
163 |
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ints[i] = new PDelay(i); |
164 |
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DelayQueue q = new DelayQueue(Arrays.asList(ints)); |
165 |
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fail("Cannot make with null elements"); |
166 |
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} |
167 |
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catch (NullPointerException success) {} |
159 |
> |
/** |
160 |
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* Initializing from Collection with some null elements throws NPE |
161 |
> |
*/ |
162 |
> |
public void testConstructor5() { |
163 |
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PDelay[] a = new PDelay[SIZE]; |
164 |
> |
for (int i = 0; i < SIZE - 1; ++i) |
165 |
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a[i] = new PDelay(i); |
166 |
> |
try { |
167 |
> |
new DelayQueue(Arrays.asList(a)); |
168 |
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shouldThrow(); |
169 |
> |
} catch (NullPointerException success) {} |
170 |
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} |
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|
172 |
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public void testConstructor6(){ |
173 |
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try { |
174 |
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PDelay[] ints = new PDelay[N]; |
175 |
< |
for (int i = 0; i < N; ++i) |
176 |
< |
ints[i] = new PDelay(i); |
177 |
< |
DelayQueue q = new DelayQueue(Arrays.asList(ints)); |
178 |
< |
for (int i = 0; i < N; ++i) |
179 |
< |
assertEquals(ints[i], q.poll()); |
180 |
< |
} |
181 |
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finally {} |
172 |
> |
/** |
173 |
> |
* Queue contains all elements of collection used to initialize |
174 |
> |
*/ |
175 |
> |
public void testConstructor6() { |
176 |
> |
PDelay[] ints = new PDelay[SIZE]; |
177 |
> |
for (int i = 0; i < SIZE; ++i) |
178 |
> |
ints[i] = new PDelay(i); |
179 |
> |
DelayQueue q = new DelayQueue(Arrays.asList(ints)); |
180 |
> |
for (int i = 0; i < SIZE; ++i) |
181 |
> |
assertEquals(ints[i], q.poll()); |
182 |
|
} |
183 |
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|
184 |
+ |
/** |
185 |
+ |
* isEmpty is true before add, false after |
186 |
+ |
*/ |
187 |
|
public void testEmpty() { |
188 |
|
DelayQueue q = new DelayQueue(); |
189 |
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assertTrue(q.isEmpty()); |
190 |
< |
assertEquals(NOCAP, q.remainingCapacity()); |
190 |
> |
assertEquals(Integer.MAX_VALUE, q.remainingCapacity()); |
191 |
|
q.add(new PDelay(1)); |
192 |
|
assertFalse(q.isEmpty()); |
193 |
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q.add(new PDelay(2)); |
196 |
|
assertTrue(q.isEmpty()); |
197 |
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} |
198 |
|
|
199 |
< |
public void testRemainingCapacity(){ |
200 |
< |
DelayQueue q = fullQueue(N); |
201 |
< |
for (int i = 0; i < N; ++i) { |
202 |
< |
assertEquals(NOCAP, q.remainingCapacity()); |
203 |
< |
assertEquals(N-i, q.size()); |
204 |
< |
q.remove(); |
199 |
> |
/** |
200 |
> |
* remainingCapacity() always returns Integer.MAX_VALUE |
201 |
> |
*/ |
202 |
> |
public void testRemainingCapacity() { |
203 |
> |
BlockingQueue q = populatedQueue(SIZE); |
204 |
> |
for (int i = 0; i < SIZE; ++i) { |
205 |
> |
assertEquals(Integer.MAX_VALUE, q.remainingCapacity()); |
206 |
> |
assertEquals(SIZE - i, q.size()); |
207 |
> |
assertTrue(q.remove() instanceof PDelay); |
208 |
|
} |
209 |
< |
for (int i = 0; i < N; ++i) { |
210 |
< |
assertEquals(NOCAP, q.remainingCapacity()); |
209 |
> |
for (int i = 0; i < SIZE; ++i) { |
210 |
> |
assertEquals(Integer.MAX_VALUE, q.remainingCapacity()); |
211 |
|
assertEquals(i, q.size()); |
212 |
< |
q.add(new PDelay(i)); |
212 |
> |
assertTrue(q.add(new PDelay(i))); |
213 |
|
} |
214 |
|
} |
215 |
|
|
216 |
< |
public void testOfferNull(){ |
217 |
< |
try { |
218 |
< |
DelayQueue q = new DelayQueue(); |
164 |
< |
q.offer(null); |
165 |
< |
fail("should throw NPE"); |
166 |
< |
} catch (NullPointerException success) { } |
167 |
< |
} |
168 |
< |
|
216 |
> |
/** |
217 |
> |
* offer non-null succeeds |
218 |
> |
*/ |
219 |
|
public void testOffer() { |
220 |
|
DelayQueue q = new DelayQueue(); |
221 |
|
assertTrue(q.offer(new PDelay(0))); |
222 |
|
assertTrue(q.offer(new PDelay(1))); |
223 |
|
} |
224 |
|
|
225 |
< |
public void testAdd(){ |
225 |
> |
/** |
226 |
> |
* add succeeds |
227 |
> |
*/ |
228 |
> |
public void testAdd() { |
229 |
|
DelayQueue q = new DelayQueue(); |
230 |
< |
for (int i = 0; i < N; ++i) { |
230 |
> |
for (int i = 0; i < SIZE; ++i) { |
231 |
|
assertEquals(i, q.size()); |
232 |
|
assertTrue(q.add(new PDelay(i))); |
233 |
|
} |
234 |
|
} |
235 |
|
|
236 |
< |
public void testAddAll1(){ |
237 |
< |
try { |
238 |
< |
DelayQueue q = new DelayQueue(); |
239 |
< |
q.addAll(null); |
240 |
< |
fail("Cannot add null collection"); |
188 |
< |
} |
189 |
< |
catch (NullPointerException success) {} |
190 |
< |
} |
191 |
< |
public void testAddAll2(){ |
236 |
> |
/** |
237 |
> |
* addAll(this) throws IllegalArgumentException |
238 |
> |
*/ |
239 |
> |
public void testAddAllSelf() { |
240 |
> |
DelayQueue q = populatedQueue(SIZE); |
241 |
|
try { |
242 |
< |
DelayQueue q = new DelayQueue(); |
243 |
< |
PDelay[] ints = new PDelay[N]; |
244 |
< |
q.addAll(Arrays.asList(ints)); |
196 |
< |
fail("Cannot add null elements"); |
197 |
< |
} |
198 |
< |
catch (NullPointerException success) {} |
242 |
> |
q.addAll(q); |
243 |
> |
shouldThrow(); |
244 |
> |
} catch (IllegalArgumentException success) {} |
245 |
|
} |
246 |
< |
public void testAddAll3(){ |
247 |
< |
try { |
248 |
< |
DelayQueue q = new DelayQueue(); |
249 |
< |
PDelay[] ints = new PDelay[N]; |
250 |
< |
for (int i = 0; i < N-1; ++i) |
251 |
< |
ints[i] = new PDelay(i); |
252 |
< |
q.addAll(Arrays.asList(ints)); |
253 |
< |
fail("Cannot add null elements"); |
254 |
< |
} |
255 |
< |
catch (NullPointerException success) {} |
246 |
> |
|
247 |
> |
/** |
248 |
> |
* addAll of a collection with any null elements throws NPE after |
249 |
> |
* possibly adding some elements |
250 |
> |
*/ |
251 |
> |
public void testAddAll3() { |
252 |
> |
DelayQueue q = new DelayQueue(); |
253 |
> |
PDelay[] a = new PDelay[SIZE]; |
254 |
> |
for (int i = 0; i < SIZE - 1; ++i) |
255 |
> |
a[i] = new PDelay(i); |
256 |
> |
try { |
257 |
> |
q.addAll(Arrays.asList(a)); |
258 |
> |
shouldThrow(); |
259 |
> |
} catch (NullPointerException success) {} |
260 |
|
} |
261 |
|
|
262 |
< |
public void testAddAll5(){ |
263 |
< |
try { |
264 |
< |
PDelay[] empty = new PDelay[0]; |
265 |
< |
PDelay[] ints = new PDelay[N]; |
266 |
< |
for (int i = N-1; i >= 0; --i) |
267 |
< |
ints[i] = new PDelay(i); |
268 |
< |
DelayQueue q = new DelayQueue(); |
269 |
< |
assertFalse(q.addAll(Arrays.asList(empty))); |
270 |
< |
assertTrue(q.addAll(Arrays.asList(ints))); |
271 |
< |
for (int i = 0; i < N; ++i) |
272 |
< |
assertEquals(ints[i], q.poll()); |
273 |
< |
} |
274 |
< |
finally {} |
225 |
< |
} |
226 |
< |
|
227 |
< |
public void testPutNull() { |
228 |
< |
try { |
229 |
< |
DelayQueue q = new DelayQueue(); |
230 |
< |
q.put(null); |
231 |
< |
fail("put should throw NPE"); |
232 |
< |
} |
233 |
< |
catch (NullPointerException success){ |
234 |
< |
} |
235 |
< |
} |
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 { |
248 |
< |
} |
262 |
> |
/** |
263 |
> |
* Queue contains all elements of successful addAll |
264 |
> |
*/ |
265 |
> |
public void testAddAll5() { |
266 |
> |
PDelay[] empty = new PDelay[0]; |
267 |
> |
PDelay[] ints = new PDelay[SIZE]; |
268 |
> |
for (int i = SIZE - 1; i >= 0; --i) |
269 |
> |
ints[i] = new PDelay(i); |
270 |
> |
DelayQueue q = new DelayQueue(); |
271 |
> |
assertFalse(q.addAll(Arrays.asList(empty))); |
272 |
> |
assertTrue(q.addAll(Arrays.asList(ints))); |
273 |
> |
for (int i = 0; i < SIZE; ++i) |
274 |
> |
assertEquals(ints[i], q.poll()); |
275 |
|
} |
276 |
|
|
277 |
< |
public void testPutWithTake() { |
278 |
< |
final DelayQueue q = new DelayQueue(); |
279 |
< |
Thread t = new Thread(new Runnable() { |
280 |
< |
public void run(){ |
281 |
< |
int added = 0; |
282 |
< |
try { |
283 |
< |
q.put(new PDelay(0)); |
284 |
< |
++added; |
285 |
< |
q.put(new PDelay(0)); |
260 |
< |
++added; |
261 |
< |
q.put(new PDelay(0)); |
262 |
< |
++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"); |
277 |
> |
/** |
278 |
> |
* all elements successfully put are contained |
279 |
> |
*/ |
280 |
> |
public void testPut() { |
281 |
> |
DelayQueue q = new DelayQueue(); |
282 |
> |
for (int i = 0; i < SIZE; ++i) { |
283 |
> |
PDelay x = new PDelay(i); |
284 |
> |
q.put(x); |
285 |
> |
assertTrue(q.contains(x)); |
286 |
|
} |
287 |
+ |
assertEquals(SIZE, q.size()); |
288 |
|
} |
289 |
|
|
290 |
< |
public void testTimedOffer() { |
290 |
> |
/** |
291 |
> |
* put doesn't block waiting for take |
292 |
> |
*/ |
293 |
> |
public void testPutWithTake() throws InterruptedException { |
294 |
|
final DelayQueue q = new DelayQueue(); |
295 |
< |
Thread t = new Thread(new Runnable() { |
296 |
< |
public void run(){ |
297 |
< |
try { |
298 |
< |
q.put(new PDelay(0)); |
299 |
< |
q.put(new PDelay(0)); |
300 |
< |
assertTrue(q.offer(new PDelay(0), SHORT_DELAY_MS/2, TimeUnit.MILLISECONDS)); |
301 |
< |
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 |
< |
} |
295 |
> |
Thread t = newStartedThread(new CheckedRunnable() { |
296 |
> |
public void realRun() { |
297 |
> |
q.put(new PDelay(0)); |
298 |
> |
q.put(new PDelay(0)); |
299 |
> |
q.put(new PDelay(0)); |
300 |
> |
q.put(new PDelay(0)); |
301 |
> |
}}); |
302 |
|
|
303 |
< |
public void testTake(){ |
304 |
< |
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 |
< |
} |
303 |
> |
awaitTermination(t); |
304 |
> |
assertEquals(4, q.size()); |
305 |
|
} |
306 |
|
|
307 |
< |
public void testTakeFromEmpty() { |
307 |
> |
/** |
308 |
> |
* Queue is unbounded, so timed offer never times out |
309 |
> |
*/ |
310 |
> |
public void testTimedOffer() throws InterruptedException { |
311 |
|
final DelayQueue q = new DelayQueue(); |
312 |
< |
Thread t = new Thread(new Runnable() { |
313 |
< |
public void run(){ |
314 |
< |
try { |
315 |
< |
q.take(); |
316 |
< |
fail("Should block"); |
317 |
< |
} catch (InterruptedException success){ } |
318 |
< |
} |
319 |
< |
}); |
320 |
< |
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 |
< |
} |
312 |
> |
Thread t = newStartedThread(new CheckedRunnable() { |
313 |
> |
public void realRun() throws InterruptedException { |
314 |
> |
q.put(new PDelay(0)); |
315 |
> |
q.put(new PDelay(0)); |
316 |
> |
assertTrue(q.offer(new PDelay(0), SHORT_DELAY_MS, MILLISECONDS)); |
317 |
> |
assertTrue(q.offer(new PDelay(0), LONG_DELAY_MS, MILLISECONDS)); |
318 |
> |
}}); |
319 |
> |
|
320 |
> |
awaitTermination(t); |
321 |
|
} |
322 |
|
|
323 |
< |
public void testBlockingTake(){ |
324 |
< |
Thread t = new Thread(new Runnable() { |
325 |
< |
public void run() { |
326 |
< |
try { |
327 |
< |
DelayQueue q = fullQueue(N); |
328 |
< |
for (int i = 0; i < N; ++i) { |
329 |
< |
assertEquals(new PDelay(i), ((PDelay)q.take())); |
342 |
< |
} |
343 |
< |
q.take(); |
344 |
< |
fail("take should block"); |
345 |
< |
} 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"); |
323 |
> |
/** |
324 |
> |
* take retrieves elements in priority order |
325 |
> |
*/ |
326 |
> |
public void testTake() throws InterruptedException { |
327 |
> |
DelayQueue q = populatedQueue(SIZE); |
328 |
> |
for (int i = 0; i < SIZE; ++i) { |
329 |
> |
assertEquals(new PDelay(i), q.take()); |
330 |
|
} |
331 |
|
} |
332 |
|
|
333 |
+ |
/** |
334 |
+ |
* Take removes existing elements until empty, then blocks interruptibly |
335 |
+ |
*/ |
336 |
+ |
public void testBlockingTake() throws InterruptedException { |
337 |
+ |
final DelayQueue q = populatedQueue(SIZE); |
338 |
+ |
final CountDownLatch pleaseInterrupt = new CountDownLatch(1); |
339 |
+ |
Thread t = newStartedThread(new CheckedRunnable() { |
340 |
+ |
public void realRun() throws InterruptedException { |
341 |
+ |
for (int i = 0; i < SIZE; i++) |
342 |
+ |
assertEquals(new PDelay(i), ((PDelay)q.take())); |
343 |
|
|
344 |
< |
public void testPoll(){ |
345 |
< |
DelayQueue q = fullQueue(N); |
346 |
< |
for (int i = 0; i < N; ++i) { |
347 |
< |
assertEquals(new PDelay(i), ((PDelay)q.poll())); |
348 |
< |
} |
349 |
< |
assertNull(q.poll()); |
366 |
< |
} |
344 |
> |
Thread.currentThread().interrupt(); |
345 |
> |
try { |
346 |
> |
q.take(); |
347 |
> |
shouldThrow(); |
348 |
> |
} catch (InterruptedException success) {} |
349 |
> |
assertFalse(Thread.interrupted()); |
350 |
|
|
351 |
< |
public void testTimedPoll0() { |
352 |
< |
try { |
353 |
< |
DelayQueue q = fullQueue(N); |
354 |
< |
for (int i = 0; i < N; ++i) { |
355 |
< |
assertEquals(new PDelay(i), ((PDelay)q.poll(0, TimeUnit.MILLISECONDS))); |
356 |
< |
} |
357 |
< |
assertNull(q.poll(0, TimeUnit.MILLISECONDS)); |
358 |
< |
} catch (InterruptedException e){ |
359 |
< |
fail("Unexpected exception"); |
360 |
< |
} |
351 |
> |
pleaseInterrupt.countDown(); |
352 |
> |
try { |
353 |
> |
q.take(); |
354 |
> |
shouldThrow(); |
355 |
> |
} catch (InterruptedException success) {} |
356 |
> |
assertFalse(Thread.interrupted()); |
357 |
> |
}}); |
358 |
> |
|
359 |
> |
await(pleaseInterrupt); |
360 |
> |
if (randomBoolean()) assertThreadBlocks(t, Thread.State.WAITING); |
361 |
> |
t.interrupt(); |
362 |
> |
awaitTermination(t); |
363 |
|
} |
364 |
|
|
365 |
< |
public void testTimedPoll() { |
366 |
< |
try { |
367 |
< |
DelayQueue q = fullQueue(N); |
368 |
< |
for (int i = 0; i < N; ++i) { |
369 |
< |
assertEquals(new PDelay(i), ((PDelay)q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS))); |
370 |
< |
} |
371 |
< |
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(); |
365 |
> |
/** |
366 |
> |
* poll succeeds unless empty |
367 |
> |
*/ |
368 |
> |
public void testPoll() { |
369 |
> |
DelayQueue q = populatedQueue(SIZE); |
370 |
> |
for (int i = 0; i < SIZE; ++i) { |
371 |
> |
assertEquals(new PDelay(i), q.poll()); |
372 |
|
} |
373 |
< |
catch (InterruptedException ie) { |
374 |
< |
fail("Unexpected exception"); |
373 |
> |
assertNull(q.poll()); |
374 |
> |
} |
375 |
> |
|
376 |
> |
/** |
377 |
> |
* timed poll with zero timeout succeeds when non-empty, else times out |
378 |
> |
*/ |
379 |
> |
public void testTimedPoll0() throws InterruptedException { |
380 |
> |
DelayQueue q = populatedQueue(SIZE); |
381 |
> |
for (int i = 0; i < SIZE; ++i) { |
382 |
> |
assertEquals(new PDelay(i), q.poll(0, MILLISECONDS)); |
383 |
|
} |
384 |
+ |
assertNull(q.poll(0, MILLISECONDS)); |
385 |
|
} |
386 |
|
|
387 |
< |
public void testTimedPollWithOffer(){ |
388 |
< |
final DelayQueue q = new DelayQueue(); |
389 |
< |
Thread t = new Thread(new Runnable() { |
390 |
< |
public void run(){ |
391 |
< |
try { |
392 |
< |
assertNull(q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS)); |
393 |
< |
q.poll(LONG_DELAY_MS, TimeUnit.MILLISECONDS); |
394 |
< |
q.poll(LONG_DELAY_MS, TimeUnit.MILLISECONDS); |
395 |
< |
fail("Should block"); |
396 |
< |
} catch (InterruptedException success) { } |
397 |
< |
} |
398 |
< |
}); |
399 |
< |
try { |
400 |
< |
t.start(); |
401 |
< |
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 |
< |
} |
387 |
> |
/** |
388 |
> |
* timed poll with nonzero timeout succeeds when non-empty, else times out |
389 |
> |
*/ |
390 |
> |
public void testTimedPoll() throws InterruptedException { |
391 |
> |
DelayQueue q = populatedQueue(SIZE); |
392 |
> |
for (int i = 0; i < SIZE; ++i) { |
393 |
> |
long startTime = System.nanoTime(); |
394 |
> |
assertEquals(new PDelay(i), q.poll(LONG_DELAY_MS, MILLISECONDS)); |
395 |
> |
assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS); |
396 |
> |
} |
397 |
> |
long startTime = System.nanoTime(); |
398 |
> |
assertNull(q.poll(timeoutMillis(), MILLISECONDS)); |
399 |
> |
assertTrue(millisElapsedSince(startTime) >= timeoutMillis()); |
400 |
> |
checkEmpty(q); |
401 |
> |
} |
402 |
|
|
403 |
+ |
/** |
404 |
+ |
* Interrupted timed poll throws InterruptedException instead of |
405 |
+ |
* returning timeout status |
406 |
+ |
*/ |
407 |
+ |
public void testInterruptedTimedPoll() throws InterruptedException { |
408 |
+ |
final CountDownLatch pleaseInterrupt = new CountDownLatch(1); |
409 |
+ |
final DelayQueue q = populatedQueue(SIZE); |
410 |
+ |
Thread t = newStartedThread(new CheckedRunnable() { |
411 |
+ |
public void realRun() throws InterruptedException { |
412 |
+ |
long startTime = System.nanoTime(); |
413 |
+ |
for (int i = 0; i < SIZE; i++) |
414 |
+ |
assertEquals(new PDelay(i), |
415 |
+ |
((PDelay)q.poll(LONG_DELAY_MS, MILLISECONDS))); |
416 |
|
|
417 |
< |
public void testPeek(){ |
418 |
< |
DelayQueue q = fullQueue(N); |
419 |
< |
for (int i = 0; i < N; ++i) { |
420 |
< |
assertEquals(new PDelay(i), ((PDelay)q.peek())); |
421 |
< |
q.poll(); |
422 |
< |
assertTrue(q.peek() == null || |
423 |
< |
i != ((PDelay)q.peek()).intValue()); |
417 |
> |
Thread.currentThread().interrupt(); |
418 |
> |
try { |
419 |
> |
q.poll(randomTimeout(), randomTimeUnit()); |
420 |
> |
shouldThrow(); |
421 |
> |
} catch (InterruptedException success) {} |
422 |
> |
assertFalse(Thread.interrupted()); |
423 |
> |
|
424 |
> |
pleaseInterrupt.countDown(); |
425 |
> |
try { |
426 |
> |
q.poll(LONG_DELAY_MS, MILLISECONDS); |
427 |
> |
shouldThrow(); |
428 |
> |
} catch (InterruptedException success) {} |
429 |
> |
assertFalse(Thread.interrupted()); |
430 |
> |
|
431 |
> |
assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS); |
432 |
> |
}}); |
433 |
> |
|
434 |
> |
await(pleaseInterrupt); |
435 |
> |
if (randomBoolean()) assertThreadBlocks(t, Thread.State.TIMED_WAITING); |
436 |
> |
t.interrupt(); |
437 |
> |
awaitTermination(t); |
438 |
> |
checkEmpty(q); |
439 |
> |
} |
440 |
> |
|
441 |
> |
/** |
442 |
> |
* peek returns next element, or null if empty |
443 |
> |
*/ |
444 |
> |
public void testPeek() { |
445 |
> |
DelayQueue q = populatedQueue(SIZE); |
446 |
> |
for (int i = 0; i < SIZE; ++i) { |
447 |
> |
assertEquals(new PDelay(i), q.peek()); |
448 |
> |
assertEquals(new PDelay(i), q.poll()); |
449 |
> |
if (q.isEmpty()) |
450 |
> |
assertNull(q.peek()); |
451 |
> |
else |
452 |
> |
assertFalse(new PDelay(i).equals(q.peek())); |
453 |
|
} |
454 |
< |
assertNull(q.peek()); |
454 |
> |
assertNull(q.peek()); |
455 |
|
} |
456 |
|
|
457 |
< |
public void testElement(){ |
458 |
< |
DelayQueue q = fullQueue(N); |
459 |
< |
for (int i = 0; i < N; ++i) { |
460 |
< |
assertEquals(new PDelay(i), ((PDelay)q.element())); |
457 |
> |
/** |
458 |
> |
* element returns next element, or throws NSEE if empty |
459 |
> |
*/ |
460 |
> |
public void testElement() { |
461 |
> |
DelayQueue q = populatedQueue(SIZE); |
462 |
> |
for (int i = 0; i < SIZE; ++i) { |
463 |
> |
assertEquals(new PDelay(i), q.element()); |
464 |
|
q.poll(); |
465 |
|
} |
466 |
|
try { |
467 |
|
q.element(); |
468 |
< |
fail("no such element"); |
469 |
< |
} |
460 |
< |
catch (NoSuchElementException success) {} |
468 |
> |
shouldThrow(); |
469 |
> |
} catch (NoSuchElementException success) {} |
470 |
|
} |
471 |
|
|
472 |
< |
public void testRemove(){ |
473 |
< |
DelayQueue q = fullQueue(N); |
474 |
< |
for (int i = 0; i < N; ++i) { |
475 |
< |
assertEquals(new PDelay(i), ((PDelay)q.remove())); |
472 |
> |
/** |
473 |
> |
* remove removes next element, or throws NSEE if empty |
474 |
> |
*/ |
475 |
> |
public void testRemove() { |
476 |
> |
DelayQueue q = populatedQueue(SIZE); |
477 |
> |
for (int i = 0; i < SIZE; ++i) { |
478 |
> |
assertEquals(new PDelay(i), q.remove()); |
479 |
|
} |
480 |
|
try { |
481 |
|
q.remove(); |
482 |
< |
fail("remove should throw"); |
483 |
< |
} catch (NoSuchElementException success){ |
472 |
< |
} |
482 |
> |
shouldThrow(); |
483 |
> |
} catch (NoSuchElementException success) {} |
484 |
|
} |
485 |
|
|
486 |
< |
public void testRemoveElement(){ |
487 |
< |
DelayQueue q = fullQueue(N); |
488 |
< |
for (int i = 1; i < N; i+=2) { |
489 |
< |
assertTrue(q.remove(new PDelay(i))); |
490 |
< |
} |
491 |
< |
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 |
< |
assertTrue(q.isEmpty()); |
485 |
< |
} |
486 |
< |
|
487 |
< |
public void testContains(){ |
488 |
< |
DelayQueue q = fullQueue(N); |
489 |
< |
for (int i = 0; i < N; ++i) { |
486 |
> |
/** |
487 |
> |
* contains(x) reports true when elements added but not yet removed |
488 |
> |
*/ |
489 |
> |
public void testContains() { |
490 |
> |
DelayQueue q = populatedQueue(SIZE); |
491 |
> |
for (int i = 0; i < SIZE; ++i) { |
492 |
|
assertTrue(q.contains(new PDelay(i))); |
493 |
|
q.poll(); |
494 |
|
assertFalse(q.contains(new PDelay(i))); |
495 |
|
} |
496 |
|
} |
497 |
|
|
498 |
< |
public void testClear(){ |
499 |
< |
DelayQueue q = fullQueue(N); |
498 |
> |
/** |
499 |
> |
* clear removes all elements |
500 |
> |
*/ |
501 |
> |
public void testClear() { |
502 |
> |
DelayQueue q = populatedQueue(SIZE); |
503 |
|
q.clear(); |
504 |
|
assertTrue(q.isEmpty()); |
505 |
|
assertEquals(0, q.size()); |
506 |
< |
assertEquals(NOCAP, q.remainingCapacity()); |
507 |
< |
q.add(new PDelay(1)); |
506 |
> |
assertEquals(Integer.MAX_VALUE, q.remainingCapacity()); |
507 |
> |
PDelay x = new PDelay(1); |
508 |
> |
q.add(x); |
509 |
|
assertFalse(q.isEmpty()); |
510 |
+ |
assertTrue(q.contains(x)); |
511 |
|
q.clear(); |
512 |
|
assertTrue(q.isEmpty()); |
513 |
|
} |
514 |
|
|
515 |
< |
public void testContainsAll(){ |
516 |
< |
DelayQueue q = fullQueue(N); |
515 |
> |
/** |
516 |
> |
* containsAll(c) is true when c contains a subset of elements |
517 |
> |
*/ |
518 |
> |
public void testContainsAll() { |
519 |
> |
DelayQueue q = populatedQueue(SIZE); |
520 |
|
DelayQueue p = new DelayQueue(); |
521 |
< |
for (int i = 0; i < N; ++i) { |
521 |
> |
for (int i = 0; i < SIZE; ++i) { |
522 |
|
assertTrue(q.containsAll(p)); |
523 |
|
assertFalse(p.containsAll(q)); |
524 |
|
p.add(new PDelay(i)); |
526 |
|
assertTrue(p.containsAll(q)); |
527 |
|
} |
528 |
|
|
529 |
< |
public void testRetainAll(){ |
530 |
< |
DelayQueue q = fullQueue(N); |
531 |
< |
DelayQueue p = fullQueue(N); |
532 |
< |
for (int i = 0; i < N; ++i) { |
529 |
> |
/** |
530 |
> |
* retainAll(c) retains only those elements of c and reports true if changed |
531 |
> |
*/ |
532 |
> |
public void testRetainAll() { |
533 |
> |
DelayQueue q = populatedQueue(SIZE); |
534 |
> |
DelayQueue p = populatedQueue(SIZE); |
535 |
> |
for (int i = 0; i < SIZE; ++i) { |
536 |
|
boolean changed = q.retainAll(p); |
537 |
|
if (i == 0) |
538 |
|
assertFalse(changed); |
540 |
|
assertTrue(changed); |
541 |
|
|
542 |
|
assertTrue(q.containsAll(p)); |
543 |
< |
assertEquals(N-i, q.size()); |
543 |
> |
assertEquals(SIZE - i, q.size()); |
544 |
|
p.remove(); |
545 |
|
} |
546 |
|
} |
547 |
|
|
548 |
< |
public void testRemoveAll(){ |
549 |
< |
for (int i = 1; i < N; ++i) { |
550 |
< |
DelayQueue q = fullQueue(N); |
551 |
< |
DelayQueue p = fullQueue(i); |
548 |
> |
/** |
549 |
> |
* removeAll(c) removes only those elements of c and reports true if changed |
550 |
> |
*/ |
551 |
> |
public void testRemoveAll() { |
552 |
> |
for (int i = 1; i < SIZE; ++i) { |
553 |
> |
DelayQueue q = populatedQueue(SIZE); |
554 |
> |
DelayQueue p = populatedQueue(i); |
555 |
|
assertTrue(q.removeAll(p)); |
556 |
< |
assertEquals(N-i, q.size()); |
556 |
> |
assertEquals(SIZE - i, q.size()); |
557 |
|
for (int j = 0; j < i; ++j) { |
558 |
< |
PDelay I = (PDelay)(p.remove()); |
559 |
< |
assertFalse(q.contains(I)); |
558 |
> |
PDelay x = (PDelay)(p.remove()); |
559 |
> |
assertFalse(q.contains(x)); |
560 |
|
} |
561 |
|
} |
562 |
|
} |
563 |
|
|
564 |
< |
/* |
565 |
< |
public void testEqualsAndHashCode(){ |
566 |
< |
DelayQueue q1 = fullQueue(N); |
567 |
< |
DelayQueue q2 = fullQueue(N); |
568 |
< |
assertTrue(q1.equals(q2)); |
569 |
< |
assertTrue(q2.equals(q1)); |
570 |
< |
assertEquals(q1.hashCode(), q2.hashCode()); |
571 |
< |
q1.remove(); |
572 |
< |
assertFalse(q1.equals(q2)); |
573 |
< |
assertFalse(q2.equals(q1)); |
574 |
< |
assertFalse(q1.hashCode() == q2.hashCode()); |
575 |
< |
q2.remove(); |
576 |
< |
assertTrue(q1.equals(q2)); |
577 |
< |
assertTrue(q2.equals(q1)); |
578 |
< |
assertEquals(q1.hashCode(), q2.hashCode()); |
579 |
< |
} |
580 |
< |
*/ |
581 |
< |
|
582 |
< |
public void testToArray(){ |
583 |
< |
DelayQueue q = fullQueue(N); |
584 |
< |
Object[] o = q.toArray(); |
569 |
< |
Arrays.sort(o); |
570 |
< |
try { |
571 |
< |
for(int i = 0; i < o.length; i++) |
572 |
< |
assertEquals(o[i], q.take()); |
573 |
< |
} catch (InterruptedException e){ |
574 |
< |
fail("Unexpected exception"); |
575 |
< |
} |
576 |
< |
} |
577 |
< |
|
578 |
< |
public void testToArray2(){ |
579 |
< |
DelayQueue q = fullQueue(N); |
580 |
< |
PDelay[] ints = new PDelay[N]; |
581 |
< |
ints = (PDelay[])q.toArray(ints); |
564 |
> |
/** |
565 |
> |
* toArray contains all elements |
566 |
> |
*/ |
567 |
> |
public void testToArray() throws InterruptedException { |
568 |
> |
DelayQueue q = populatedQueue(SIZE); |
569 |
> |
Object[] a = q.toArray(); |
570 |
> |
assertSame(Object[].class, a.getClass()); |
571 |
> |
Arrays.sort(a); |
572 |
> |
for (Object o : a) |
573 |
> |
assertSame(o, q.take()); |
574 |
> |
assertTrue(q.isEmpty()); |
575 |
> |
} |
576 |
> |
|
577 |
> |
/** |
578 |
> |
* toArray(a) contains all elements |
579 |
> |
*/ |
580 |
> |
public void testToArray2() { |
581 |
> |
DelayQueue<PDelay> q = populatedQueue(SIZE); |
582 |
> |
PDelay[] ints = new PDelay[SIZE]; |
583 |
> |
PDelay[] array = q.toArray(ints); |
584 |
> |
assertSame(ints, array); |
585 |
|
Arrays.sort(ints); |
586 |
< |
try { |
587 |
< |
for(int i = 0; i < ints.length; i++) |
588 |
< |
assertEquals(ints[i], q.take()); |
589 |
< |
} catch (InterruptedException e){ |
590 |
< |
fail("Unexpected exception"); |
591 |
< |
} |
592 |
< |
} |
593 |
< |
|
594 |
< |
public void testIterator(){ |
595 |
< |
DelayQueue q = fullQueue(N); |
586 |
> |
for (PDelay o : ints) |
587 |
> |
assertSame(o, q.remove()); |
588 |
> |
assertTrue(q.isEmpty()); |
589 |
> |
} |
590 |
> |
|
591 |
> |
/** |
592 |
> |
* toArray(incompatible array type) throws ArrayStoreException |
593 |
> |
*/ |
594 |
> |
public void testToArray1_BadArg() { |
595 |
> |
DelayQueue q = populatedQueue(SIZE); |
596 |
> |
try { |
597 |
> |
q.toArray(new String[10]); |
598 |
> |
shouldThrow(); |
599 |
> |
} catch (ArrayStoreException success) {} |
600 |
> |
} |
601 |
> |
|
602 |
> |
/** |
603 |
> |
* iterator iterates through all elements |
604 |
> |
*/ |
605 |
> |
public void testIterator() { |
606 |
> |
DelayQueue q = populatedQueue(SIZE); |
607 |
|
int i = 0; |
608 |
< |
Iterator it = q.iterator(); |
609 |
< |
while(it.hasNext()) { |
608 |
> |
Iterator it = q.iterator(); |
609 |
> |
while (it.hasNext()) { |
610 |
|
assertTrue(q.contains(it.next())); |
611 |
|
++i; |
612 |
|
} |
613 |
< |
assertEquals(i, N); |
613 |
> |
assertEquals(i, SIZE); |
614 |
> |
assertIteratorExhausted(it); |
615 |
|
} |
616 |
|
|
617 |
< |
public void testIteratorRemove () { |
617 |
> |
/** |
618 |
> |
* iterator of empty collection has no elements |
619 |
> |
*/ |
620 |
> |
public void testEmptyIterator() { |
621 |
> |
assertIteratorExhausted(new DelayQueue().iterator()); |
622 |
> |
} |
623 |
|
|
624 |
+ |
/** |
625 |
+ |
* iterator.remove removes current element |
626 |
+ |
*/ |
627 |
+ |
public void testIteratorRemove() { |
628 |
|
final DelayQueue q = new DelayQueue(); |
605 |
– |
|
629 |
|
q.add(new PDelay(2)); |
630 |
|
q.add(new PDelay(1)); |
631 |
|
q.add(new PDelay(3)); |
609 |
– |
|
632 |
|
Iterator it = q.iterator(); |
633 |
|
it.next(); |
634 |
|
it.remove(); |
613 |
– |
|
635 |
|
it = q.iterator(); |
636 |
< |
assertEquals(it.next(), new PDelay(2)); |
637 |
< |
assertEquals(it.next(), new PDelay(3)); |
636 |
> |
assertEquals(new PDelay(2), it.next()); |
637 |
> |
assertEquals(new PDelay(3), it.next()); |
638 |
|
assertFalse(it.hasNext()); |
639 |
|
} |
640 |
|
|
641 |
< |
|
642 |
< |
public void testToString(){ |
643 |
< |
DelayQueue q = fullQueue(N); |
641 |
> |
/** |
642 |
> |
* toString contains toStrings of elements |
643 |
> |
*/ |
644 |
> |
public void testToString() { |
645 |
> |
DelayQueue q = populatedQueue(SIZE); |
646 |
|
String s = q.toString(); |
647 |
< |
for (int i = 0; i < N; ++i) { |
648 |
< |
assertTrue(s.indexOf(String.valueOf(i)) >= 0); |
649 |
< |
} |
627 |
< |
} |
647 |
> |
for (Object e : q) |
648 |
> |
assertTrue(s.contains(e.toString())); |
649 |
> |
} |
650 |
|
|
651 |
+ |
/** |
652 |
+ |
* timed poll transfers elements across Executor tasks |
653 |
+ |
*/ |
654 |
|
public void testPollInExecutor() { |
630 |
– |
|
655 |
|
final DelayQueue q = new DelayQueue(); |
656 |
+ |
final CheckedBarrier threadsStarted = new CheckedBarrier(2); |
657 |
+ |
final ExecutorService executor = Executors.newFixedThreadPool(2); |
658 |
+ |
try (PoolCleaner cleaner = cleaner(executor)) { |
659 |
+ |
executor.execute(new CheckedRunnable() { |
660 |
+ |
public void realRun() throws InterruptedException { |
661 |
+ |
assertNull(q.poll()); |
662 |
+ |
threadsStarted.await(); |
663 |
+ |
assertNotNull(q.poll(LONG_DELAY_MS, MILLISECONDS)); |
664 |
+ |
checkEmpty(q); |
665 |
+ |
}}); |
666 |
|
|
667 |
< |
ExecutorService executor = Executors.newFixedThreadPool(2); |
668 |
< |
|
669 |
< |
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); |
667 |
> |
executor.execute(new CheckedRunnable() { |
668 |
> |
public void realRun() throws InterruptedException { |
669 |
> |
threadsStarted.await(); |
670 |
|
q.put(new PDelay(1)); |
671 |
< |
} |
654 |
< |
catch (InterruptedException e) { |
655 |
< |
fail("should not be interrupted"); |
656 |
< |
} |
657 |
< |
} |
658 |
< |
}); |
659 |
< |
|
660 |
< |
executor.shutdown(); |
661 |
< |
|
662 |
< |
} |
663 |
< |
|
664 |
< |
static class NanoDelay implements Delayed { |
665 |
< |
long trigger; |
666 |
< |
NanoDelay(long i) { |
667 |
< |
trigger = System.nanoTime() + i; |
668 |
< |
} |
669 |
< |
public int compareTo(Object y) { |
670 |
< |
long i = trigger; |
671 |
< |
long j = ((NanoDelay)y).trigger; |
672 |
< |
if (i < j) return -1; |
673 |
< |
if (i > j) return 1; |
674 |
< |
return 0; |
675 |
< |
} |
676 |
< |
|
677 |
< |
public int compareTo(NanoDelay y) { |
678 |
< |
long i = trigger; |
679 |
< |
long j = ((NanoDelay)y).trigger; |
680 |
< |
if (i < j) return -1; |
681 |
< |
if (i > j) return 1; |
682 |
< |
return 0; |
671 |
> |
}}); |
672 |
|
} |
673 |
+ |
} |
674 |
|
|
675 |
< |
public boolean equals(Object other) { |
676 |
< |
return ((NanoDelay)other).trigger == trigger; |
677 |
< |
} |
678 |
< |
public boolean equals(NanoDelay other) { |
679 |
< |
return ((NanoDelay)other).trigger == trigger; |
675 |
> |
/** |
676 |
> |
* Delayed actions do not occur until their delay elapses |
677 |
> |
*/ |
678 |
> |
public void testDelay() throws InterruptedException { |
679 |
> |
DelayQueue<NanoDelay> q = new DelayQueue<>(); |
680 |
> |
for (int i = 0; i < SIZE; ++i) |
681 |
> |
q.add(new NanoDelay(1000000L * (SIZE - i))); |
682 |
> |
|
683 |
> |
long last = 0; |
684 |
> |
for (int i = 0; i < SIZE; ++i) { |
685 |
> |
NanoDelay e = q.take(); |
686 |
> |
long tt = e.getTriggerTime(); |
687 |
> |
assertTrue(System.nanoTime() - tt >= 0); |
688 |
> |
if (i != 0) |
689 |
> |
assertTrue(tt >= last); |
690 |
> |
last = tt; |
691 |
|
} |
692 |
+ |
assertTrue(q.isEmpty()); |
693 |
+ |
} |
694 |
|
|
695 |
< |
public long getDelay(TimeUnit unit) { |
696 |
< |
long n = trigger - System.nanoTime(); |
697 |
< |
return unit.convert(n, TimeUnit.NANOSECONDS); |
698 |
< |
} |
695 |
> |
/** |
696 |
> |
* peek of a non-empty queue returns non-null even if not expired |
697 |
> |
*/ |
698 |
> |
public void testPeekDelayed() { |
699 |
> |
DelayQueue q = new DelayQueue(); |
700 |
> |
q.add(new NanoDelay(Long.MAX_VALUE)); |
701 |
> |
assertNotNull(q.peek()); |
702 |
> |
} |
703 |
|
|
704 |
< |
public long getTriggerTime() { |
705 |
< |
return trigger; |
706 |
< |
} |
704 |
> |
/** |
705 |
> |
* poll of a non-empty queue returns null if no expired elements. |
706 |
> |
*/ |
707 |
> |
public void testPollDelayed() { |
708 |
> |
DelayQueue q = new DelayQueue(); |
709 |
> |
q.add(new NanoDelay(Long.MAX_VALUE)); |
710 |
> |
assertNull(q.poll()); |
711 |
> |
} |
712 |
|
|
713 |
< |
public String toString() { |
714 |
< |
return String.valueOf(trigger); |
715 |
< |
} |
713 |
> |
/** |
714 |
> |
* timed poll of a non-empty queue returns null if no expired elements. |
715 |
> |
*/ |
716 |
> |
public void testTimedPollDelayed() throws InterruptedException { |
717 |
> |
DelayQueue q = new DelayQueue(); |
718 |
> |
q.add(new NanoDelay(LONG_DELAY_MS * 1000000L)); |
719 |
> |
long startTime = System.nanoTime(); |
720 |
> |
assertNull(q.poll(timeoutMillis(), MILLISECONDS)); |
721 |
> |
assertTrue(millisElapsedSince(startTime) >= timeoutMillis()); |
722 |
|
} |
723 |
|
|
724 |
< |
public void testDelay() { |
724 |
> |
/** |
725 |
> |
* drainTo(c) empties queue into another collection c |
726 |
> |
*/ |
727 |
> |
public void testDrainTo() { |
728 |
|
DelayQueue q = new DelayQueue(); |
729 |
< |
NanoDelay[] elements = new NanoDelay[N]; |
730 |
< |
for (int i = 0; i < N; ++i) { |
731 |
< |
elements[i] = new NanoDelay(1000000000L + 1000000L * (N - i)); |
732 |
< |
} |
712 |
< |
for (int i = 0; i < N; ++i) { |
713 |
< |
q.add(elements[i]); |
729 |
> |
PDelay[] elems = new PDelay[SIZE]; |
730 |
> |
for (int i = 0; i < SIZE; ++i) { |
731 |
> |
elems[i] = new PDelay(i); |
732 |
> |
q.add(elems[i]); |
733 |
|
} |
734 |
+ |
ArrayList l = new ArrayList(); |
735 |
+ |
q.drainTo(l); |
736 |
+ |
assertEquals(0, q.size()); |
737 |
+ |
for (int i = 0; i < SIZE; ++i) |
738 |
+ |
assertEquals(elems[i], l.get(i)); |
739 |
+ |
q.add(elems[0]); |
740 |
+ |
q.add(elems[1]); |
741 |
+ |
assertFalse(q.isEmpty()); |
742 |
+ |
assertTrue(q.contains(elems[0])); |
743 |
+ |
assertTrue(q.contains(elems[1])); |
744 |
+ |
l.clear(); |
745 |
+ |
q.drainTo(l); |
746 |
+ |
assertEquals(0, q.size()); |
747 |
+ |
assertEquals(2, l.size()); |
748 |
+ |
for (int i = 0; i < 2; ++i) |
749 |
+ |
assertEquals(elems[i], l.get(i)); |
750 |
+ |
} |
751 |
|
|
752 |
< |
try { |
753 |
< |
long last = 0; |
754 |
< |
for (int i = 0; i < N; ++i) { |
755 |
< |
NanoDelay e = (NanoDelay)(q.take()); |
756 |
< |
long tt = e.getTriggerTime(); |
757 |
< |
assertTrue(tt <= System.nanoTime()); |
758 |
< |
if (i != 0) |
759 |
< |
assertTrue(tt >= last); |
760 |
< |
last = tt; |
761 |
< |
} |
762 |
< |
} |
763 |
< |
catch(InterruptedException ie) { |
764 |
< |
fail("Unexpected Exception"); |
752 |
> |
/** |
753 |
> |
* drainTo empties queue |
754 |
> |
*/ |
755 |
> |
public void testDrainToWithActivePut() throws InterruptedException { |
756 |
> |
final DelayQueue q = populatedQueue(SIZE); |
757 |
> |
Thread t = new Thread(new CheckedRunnable() { |
758 |
> |
public void realRun() { |
759 |
> |
q.put(new PDelay(SIZE + 1)); |
760 |
> |
}}); |
761 |
> |
|
762 |
> |
t.start(); |
763 |
> |
ArrayList l = new ArrayList(); |
764 |
> |
q.drainTo(l); |
765 |
> |
assertTrue(l.size() >= SIZE); |
766 |
> |
t.join(); |
767 |
> |
assertTrue(q.size() + l.size() >= SIZE); |
768 |
> |
} |
769 |
> |
|
770 |
> |
/** |
771 |
> |
* drainTo(c, n) empties first min(n, size) elements of queue into c |
772 |
> |
*/ |
773 |
> |
public void testDrainToN() { |
774 |
> |
for (int i = 0; i < SIZE + 2; ++i) { |
775 |
> |
DelayQueue q = populatedQueue(SIZE); |
776 |
> |
ArrayList l = new ArrayList(); |
777 |
> |
q.drainTo(l, i); |
778 |
> |
int k = (i < SIZE) ? i : SIZE; |
779 |
> |
assertEquals(SIZE - k, q.size()); |
780 |
> |
assertEquals(k, l.size()); |
781 |
|
} |
782 |
|
} |
783 |
|
|
784 |
+ |
/** |
785 |
+ |
* remove(null), contains(null) always return false |
786 |
+ |
*/ |
787 |
+ |
public void testNeverContainsNull() { |
788 |
+ |
Collection<?> q = populatedQueue(SIZE); |
789 |
+ |
assertFalse(q.contains(null)); |
790 |
+ |
assertFalse(q.remove(null)); |
791 |
+ |
} |
792 |
|
} |