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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/licenses/publicdomain |
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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 static java.util.concurrent.TimeUnit.MILLISECONDS; |
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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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|
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public class DelayQueueTest extends JSR166TestCase { |
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public static void main(String[] args) { |
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junit.textui.TestRunner.run (suite()); |
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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 new TestSuite(DelayQueueTest.class); |
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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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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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int j = 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 compareTo((PDelay)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((PDelay)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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return other.pseudodelay == pseudodelay; |
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} |
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} |
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|
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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 equals((NanoDelay)other); |
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} |
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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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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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|
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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(trigger); |
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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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*/ |
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private DelayQueue fullQueue(int n) { |
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private DelayQueue populatedQueue(int n) { |
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DelayQueue 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(n, q.size()); |
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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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|
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/** |
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* A new queue has unbounded capacity |
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*/ |
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public void testConstructor1() { |
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assertEquals(NOCAP, new DelayQueue().remainingCapacity()); |
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} |
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public void testConstructor3(){ |
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|
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/** |
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* Initializing from null Collection throws NPE |
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*/ |
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public void testConstructor3() { |
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try { |
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DelayQueue q = new DelayQueue(null); |
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fail("Cannot make from null collection"); |
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} |
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catch (NullPointerException success) {} |
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shouldThrow(); |
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} catch (NullPointerException success) {} |
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} |
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|
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public void testConstructor4(){ |
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/** |
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* Initializing from Collection of null elements throws NPE |
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*/ |
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public void testConstructor4() { |
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try { |
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PDelay[] ints = new PDelay[N]; |
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PDelay[] ints = new PDelay[SIZE]; |
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DelayQueue q = new DelayQueue(Arrays.asList(ints)); |
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fail("Cannot make with null elements"); |
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} |
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catch (NullPointerException success) {} |
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shouldThrow(); |
150 |
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} catch (NullPointerException success) {} |
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} |
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|
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public void testConstructor5(){ |
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/** |
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* Initializing from Collection with some null elements throws NPE |
155 |
> |
*/ |
156 |
> |
public void testConstructor5() { |
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try { |
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PDelay[] ints = new PDelay[N]; |
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for (int i = 0; i < N-1; ++i) |
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PDelay[] ints = new PDelay[SIZE]; |
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for (int i = 0; i < SIZE-1; ++i) |
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ints[i] = new PDelay(i); |
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DelayQueue q = new DelayQueue(Arrays.asList(ints)); |
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fail("Cannot make with null elements"); |
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} |
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catch (NullPointerException success) {} |
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shouldThrow(); |
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} catch (NullPointerException success) {} |
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} |
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|
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public void testConstructor6(){ |
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try { |
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PDelay[] ints = new PDelay[N]; |
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for (int i = 0; i < N; ++i) |
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ints[i] = new PDelay(i); |
171 |
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DelayQueue q = new DelayQueue(Arrays.asList(ints)); |
172 |
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for (int i = 0; i < N; ++i) |
173 |
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assertEquals(ints[i], q.poll()); |
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} |
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finally {} |
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/** |
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* Queue contains all elements of collection used to initialize |
168 |
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*/ |
169 |
> |
public void testConstructor6() { |
170 |
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PDelay[] ints = new PDelay[SIZE]; |
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for (int i = 0; i < SIZE; ++i) |
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ints[i] = new PDelay(i); |
173 |
> |
DelayQueue q = new DelayQueue(Arrays.asList(ints)); |
174 |
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for (int i = 0; i < SIZE; ++i) |
175 |
> |
assertEquals(ints[i], q.poll()); |
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} |
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|
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/** |
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* isEmpty is true before add, false after |
180 |
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*/ |
181 |
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public void testEmpty() { |
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DelayQueue q = new DelayQueue(); |
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assertTrue(q.isEmpty()); |
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assertTrue(q.isEmpty()); |
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} |
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|
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public void testRemainingCapacity(){ |
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DelayQueue q = fullQueue(N); |
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for (int i = 0; i < N; ++i) { |
193 |
> |
/** |
194 |
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* remainingCapacity does not change when elements added or removed, |
195 |
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* but size does |
196 |
> |
*/ |
197 |
> |
public void testRemainingCapacity() { |
198 |
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DelayQueue q = populatedQueue(SIZE); |
199 |
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for (int i = 0; i < SIZE; ++i) { |
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assertEquals(NOCAP, q.remainingCapacity()); |
201 |
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assertEquals(N-i, q.size()); |
201 |
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assertEquals(SIZE-i, q.size()); |
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q.remove(); |
203 |
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} |
204 |
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for (int i = 0; i < N; ++i) { |
204 |
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for (int i = 0; i < SIZE; ++i) { |
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assertEquals(NOCAP, q.remainingCapacity()); |
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assertEquals(i, q.size()); |
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q.add(new PDelay(i)); |
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} |
209 |
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} |
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|
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public void testOfferNull(){ |
212 |
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try { |
211 |
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/** |
212 |
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* offer(null) throws NPE |
213 |
> |
*/ |
214 |
> |
public void testOfferNull() { |
215 |
> |
try { |
216 |
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DelayQueue q = new DelayQueue(); |
217 |
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q.offer(null); |
218 |
< |
fail("should throw NPE"); |
219 |
< |
} catch (NullPointerException success) { } |
218 |
> |
shouldThrow(); |
219 |
> |
} catch (NullPointerException success) {} |
220 |
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} |
221 |
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|
222 |
+ |
/** |
223 |
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* add(null) throws NPE |
224 |
+ |
*/ |
225 |
+ |
public void testAddNull() { |
226 |
+ |
try { |
227 |
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DelayQueue q = new DelayQueue(); |
228 |
+ |
q.add(null); |
229 |
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shouldThrow(); |
230 |
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} catch (NullPointerException success) {} |
231 |
+ |
} |
232 |
+ |
|
233 |
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/** |
234 |
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* offer non-null succeeds |
235 |
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*/ |
236 |
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public void testOffer() { |
237 |
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DelayQueue q = new DelayQueue(); |
238 |
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assertTrue(q.offer(new PDelay(0))); |
239 |
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assertTrue(q.offer(new PDelay(1))); |
240 |
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} |
241 |
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|
242 |
< |
public void testAdd(){ |
242 |
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/** |
243 |
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* add succeeds |
244 |
> |
*/ |
245 |
> |
public void testAdd() { |
246 |
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DelayQueue q = new DelayQueue(); |
247 |
< |
for (int i = 0; i < N; ++i) { |
247 |
> |
for (int i = 0; i < SIZE; ++i) { |
248 |
|
assertEquals(i, q.size()); |
249 |
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assertTrue(q.add(new PDelay(i))); |
250 |
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} |
251 |
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} |
252 |
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|
253 |
< |
public void testAddAll1(){ |
253 |
> |
/** |
254 |
> |
* addAll(null) throws NPE |
255 |
> |
*/ |
256 |
> |
public void testAddAll1() { |
257 |
|
try { |
258 |
|
DelayQueue q = new DelayQueue(); |
259 |
|
q.addAll(null); |
260 |
< |
fail("Cannot add null collection"); |
261 |
< |
} |
262 |
< |
catch (NullPointerException success) {} |
260 |
> |
shouldThrow(); |
261 |
> |
} catch (NullPointerException success) {} |
262 |
> |
} |
263 |
> |
|
264 |
> |
|
265 |
> |
/** |
266 |
> |
* addAll(this) throws IAE |
267 |
> |
*/ |
268 |
> |
public void testAddAllSelf() { |
269 |
> |
try { |
270 |
> |
DelayQueue q = populatedQueue(SIZE); |
271 |
> |
q.addAll(q); |
272 |
> |
shouldThrow(); |
273 |
> |
} catch (IllegalArgumentException success) {} |
274 |
|
} |
275 |
< |
public void testAddAll2(){ |
275 |
> |
|
276 |
> |
/** |
277 |
> |
* addAll of a collection with null elements throws NPE |
278 |
> |
*/ |
279 |
> |
public void testAddAll2() { |
280 |
|
try { |
281 |
|
DelayQueue q = new DelayQueue(); |
282 |
< |
PDelay[] ints = new PDelay[N]; |
282 |
> |
PDelay[] ints = new PDelay[SIZE]; |
283 |
|
q.addAll(Arrays.asList(ints)); |
284 |
< |
fail("Cannot add null elements"); |
285 |
< |
} |
198 |
< |
catch (NullPointerException success) {} |
284 |
> |
shouldThrow(); |
285 |
> |
} catch (NullPointerException success) {} |
286 |
|
} |
287 |
< |
public void testAddAll3(){ |
287 |
> |
|
288 |
> |
/** |
289 |
> |
* addAll of a collection with any null elements throws NPE after |
290 |
> |
* possibly adding some elements |
291 |
> |
*/ |
292 |
> |
public void testAddAll3() { |
293 |
|
try { |
294 |
|
DelayQueue q = new DelayQueue(); |
295 |
< |
PDelay[] ints = new PDelay[N]; |
296 |
< |
for (int i = 0; i < N-1; ++i) |
295 |
> |
PDelay[] ints = new PDelay[SIZE]; |
296 |
> |
for (int i = 0; i < SIZE-1; ++i) |
297 |
|
ints[i] = new PDelay(i); |
298 |
|
q.addAll(Arrays.asList(ints)); |
299 |
< |
fail("Cannot add null elements"); |
300 |
< |
} |
209 |
< |
catch (NullPointerException success) {} |
299 |
> |
shouldThrow(); |
300 |
> |
} catch (NullPointerException success) {} |
301 |
|
} |
302 |
|
|
303 |
< |
public void testAddAll5(){ |
304 |
< |
try { |
305 |
< |
PDelay[] empty = new PDelay[0]; |
306 |
< |
PDelay[] ints = new PDelay[N]; |
307 |
< |
for (int i = N-1; i >= 0; --i) |
308 |
< |
ints[i] = new PDelay(i); |
309 |
< |
DelayQueue q = new DelayQueue(); |
310 |
< |
assertFalse(q.addAll(Arrays.asList(empty))); |
311 |
< |
assertTrue(q.addAll(Arrays.asList(ints))); |
312 |
< |
for (int i = 0; i < N; ++i) |
313 |
< |
assertEquals(ints[i], q.poll()); |
314 |
< |
} |
315 |
< |
finally {} |
303 |
> |
/** |
304 |
> |
* Queue contains all elements of successful addAll |
305 |
> |
*/ |
306 |
> |
public void testAddAll5() { |
307 |
> |
PDelay[] empty = new PDelay[0]; |
308 |
> |
PDelay[] ints = new PDelay[SIZE]; |
309 |
> |
for (int i = SIZE-1; i >= 0; --i) |
310 |
> |
ints[i] = new PDelay(i); |
311 |
> |
DelayQueue q = new DelayQueue(); |
312 |
> |
assertFalse(q.addAll(Arrays.asList(empty))); |
313 |
> |
assertTrue(q.addAll(Arrays.asList(ints))); |
314 |
> |
for (int i = 0; i < SIZE; ++i) |
315 |
> |
assertEquals(ints[i], q.poll()); |
316 |
|
} |
317 |
|
|
318 |
+ |
/** |
319 |
+ |
* put(null) throws NPE |
320 |
+ |
*/ |
321 |
|
public void testPutNull() { |
322 |
< |
try { |
322 |
> |
try { |
323 |
|
DelayQueue q = new DelayQueue(); |
324 |
|
q.put(null); |
325 |
< |
fail("put should throw NPE"); |
326 |
< |
} |
233 |
< |
catch (NullPointerException success){ |
234 |
< |
} |
325 |
> |
shouldThrow(); |
326 |
> |
} catch (NullPointerException success) {} |
327 |
|
} |
328 |
|
|
329 |
+ |
/** |
330 |
+ |
* all elements successfully put are contained |
331 |
+ |
*/ |
332 |
|
public void testPut() { |
333 |
< |
try { |
334 |
< |
DelayQueue q = new DelayQueue(); |
335 |
< |
for (int i = 0; i < N; ++i) { |
336 |
< |
PDelay I = new PDelay(i); |
337 |
< |
q.put(I); |
243 |
< |
assertTrue(q.contains(I)); |
244 |
< |
} |
245 |
< |
assertEquals(N, q.size()); |
333 |
> |
DelayQueue q = new DelayQueue(); |
334 |
> |
for (int i = 0; i < SIZE; ++i) { |
335 |
> |
PDelay I = new PDelay(i); |
336 |
> |
q.put(I); |
337 |
> |
assertTrue(q.contains(I)); |
338 |
|
} |
339 |
< |
finally { |
248 |
< |
} |
339 |
> |
assertEquals(SIZE, q.size()); |
340 |
|
} |
341 |
|
|
342 |
< |
public void testPutWithTake() { |
342 |
> |
/** |
343 |
> |
* put doesn't block waiting for take |
344 |
> |
*/ |
345 |
> |
public void testPutWithTake() throws InterruptedException { |
346 |
|
final DelayQueue q = new DelayQueue(); |
347 |
< |
Thread t = new Thread(new Runnable() { |
348 |
< |
public void run(){ |
349 |
< |
int added = 0; |
350 |
< |
try { |
351 |
< |
q.put(new PDelay(0)); |
352 |
< |
++added; |
353 |
< |
q.put(new PDelay(0)); |
354 |
< |
++added; |
355 |
< |
q.put(new PDelay(0)); |
356 |
< |
++added; |
357 |
< |
q.put(new PDelay(0)); |
358 |
< |
++added; |
359 |
< |
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 |
< |
} |
347 |
> |
Thread t = new Thread(new CheckedRunnable() { |
348 |
> |
public void realRun() { |
349 |
> |
q.put(new PDelay(0)); |
350 |
> |
q.put(new PDelay(0)); |
351 |
> |
q.put(new PDelay(0)); |
352 |
> |
q.put(new PDelay(0)); |
353 |
> |
}}); |
354 |
> |
|
355 |
> |
t.start(); |
356 |
> |
Thread.sleep(SHORT_DELAY_MS); |
357 |
> |
q.take(); |
358 |
> |
t.interrupt(); |
359 |
> |
t.join(); |
360 |
|
} |
361 |
|
|
362 |
< |
public void testTimedOffer() { |
362 |
> |
/** |
363 |
> |
* timed offer does not time out |
364 |
> |
*/ |
365 |
> |
public void testTimedOffer() throws InterruptedException { |
366 |
|
final DelayQueue q = new DelayQueue(); |
367 |
< |
Thread t = new Thread(new Runnable() { |
368 |
< |
public void run(){ |
369 |
< |
try { |
370 |
< |
q.put(new PDelay(0)); |
371 |
< |
q.put(new PDelay(0)); |
372 |
< |
assertTrue(q.offer(new PDelay(0), SHORT_DELAY_MS/2, TimeUnit.MILLISECONDS)); |
373 |
< |
assertTrue(q.offer(new PDelay(0), LONG_DELAY_MS, TimeUnit.MILLISECONDS)); |
374 |
< |
} finally { } |
375 |
< |
} |
376 |
< |
}); |
377 |
< |
|
378 |
< |
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 |
< |
} |
367 |
> |
Thread t = new Thread(new CheckedRunnable() { |
368 |
> |
public void realRun() throws InterruptedException { |
369 |
> |
q.put(new PDelay(0)); |
370 |
> |
q.put(new PDelay(0)); |
371 |
> |
assertTrue(q.offer(new PDelay(0), SHORT_DELAY_MS, MILLISECONDS)); |
372 |
> |
assertTrue(q.offer(new PDelay(0), LONG_DELAY_MS, MILLISECONDS)); |
373 |
> |
}}); |
374 |
> |
|
375 |
> |
t.start(); |
376 |
> |
Thread.sleep(SMALL_DELAY_MS); |
377 |
> |
t.interrupt(); |
378 |
> |
t.join(); |
379 |
|
} |
380 |
|
|
381 |
< |
public void testTake(){ |
382 |
< |
try { |
383 |
< |
DelayQueue q = fullQueue(N); |
384 |
< |
for (int i = 0; i < N; ++i) { |
385 |
< |
assertEquals(new PDelay(i), ((PDelay)q.take())); |
386 |
< |
} |
387 |
< |
} catch (InterruptedException e){ |
388 |
< |
fail("Unexpected exception"); |
312 |
< |
} |
381 |
> |
/** |
382 |
> |
* take retrieves elements in priority order |
383 |
> |
*/ |
384 |
> |
public void testTake() throws InterruptedException { |
385 |
> |
DelayQueue q = populatedQueue(SIZE); |
386 |
> |
for (int i = 0; i < SIZE; ++i) { |
387 |
> |
assertEquals(new PDelay(i), ((PDelay)q.take())); |
388 |
> |
} |
389 |
|
} |
390 |
|
|
391 |
< |
public void testTakeFromEmpty() { |
391 |
> |
/** |
392 |
> |
* take blocks interruptibly when empty |
393 |
> |
*/ |
394 |
> |
public void testTakeFromEmpty() throws InterruptedException { |
395 |
|
final DelayQueue q = new DelayQueue(); |
396 |
< |
Thread t = new Thread(new Runnable() { |
397 |
< |
public void run(){ |
398 |
< |
try { |
399 |
< |
q.take(); |
400 |
< |
fail("Should block"); |
401 |
< |
} catch (InterruptedException success){ } |
402 |
< |
} |
403 |
< |
}); |
404 |
< |
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 |
< |
} |
396 |
> |
Thread t = new ThreadShouldThrow(InterruptedException.class) { |
397 |
> |
public void realRun() throws InterruptedException { |
398 |
> |
q.take(); |
399 |
> |
}}; |
400 |
> |
|
401 |
> |
t.start(); |
402 |
> |
Thread.sleep(SHORT_DELAY_MS); |
403 |
> |
t.interrupt(); |
404 |
> |
t.join(); |
405 |
|
} |
406 |
|
|
407 |
< |
public void testBlockingTake(){ |
408 |
< |
Thread t = new Thread(new Runnable() { |
409 |
< |
public void run() { |
410 |
< |
try { |
411 |
< |
DelayQueue q = fullQueue(N); |
412 |
< |
for (int i = 0; i < N; ++i) { |
413 |
< |
assertEquals(new PDelay(i), ((PDelay)q.take())); |
414 |
< |
} |
415 |
< |
q.take(); |
416 |
< |
fail("take should block"); |
417 |
< |
} catch (InterruptedException success){ |
418 |
< |
} |
419 |
< |
}}); |
407 |
> |
/** |
408 |
> |
* Take removes existing elements until empty, then blocks interruptibly |
409 |
> |
*/ |
410 |
> |
public void testBlockingTake() throws InterruptedException { |
411 |
> |
final DelayQueue q = populatedQueue(SIZE); |
412 |
> |
Thread t = new Thread(new CheckedRunnable() { |
413 |
> |
public void realRun() throws InterruptedException { |
414 |
> |
for (int i = 0; i < SIZE; ++i) { |
415 |
> |
assertEquals(new PDelay(i), ((PDelay)q.take())); |
416 |
> |
} |
417 |
> |
try { |
418 |
> |
q.take(); |
419 |
> |
shouldThrow(); |
420 |
> |
} catch (InterruptedException success) {} |
421 |
> |
}}); |
422 |
> |
|
423 |
|
t.start(); |
424 |
< |
try { |
425 |
< |
Thread.sleep(SHORT_DELAY_MS); |
426 |
< |
t.interrupt(); |
352 |
< |
t.join(); |
353 |
< |
} |
354 |
< |
catch (InterruptedException ie) { |
355 |
< |
fail("Unexpected exception"); |
356 |
< |
} |
424 |
> |
Thread.sleep(SHORT_DELAY_MS); |
425 |
> |
t.interrupt(); |
426 |
> |
t.join(); |
427 |
|
} |
428 |
|
|
429 |
|
|
430 |
< |
public void testPoll(){ |
431 |
< |
DelayQueue q = fullQueue(N); |
432 |
< |
for (int i = 0; i < N; ++i) { |
430 |
> |
/** |
431 |
> |
* poll succeeds unless empty |
432 |
> |
*/ |
433 |
> |
public void testPoll() { |
434 |
> |
DelayQueue q = populatedQueue(SIZE); |
435 |
> |
for (int i = 0; i < SIZE; ++i) { |
436 |
|
assertEquals(new PDelay(i), ((PDelay)q.poll())); |
437 |
|
} |
438 |
< |
assertNull(q.poll()); |
438 |
> |
assertNull(q.poll()); |
439 |
|
} |
440 |
|
|
441 |
< |
public void testTimedPoll0() { |
442 |
< |
try { |
443 |
< |
DelayQueue q = fullQueue(N); |
444 |
< |
for (int i = 0; i < N; ++i) { |
445 |
< |
assertEquals(new PDelay(i), ((PDelay)q.poll(0, TimeUnit.MILLISECONDS))); |
446 |
< |
} |
447 |
< |
assertNull(q.poll(0, TimeUnit.MILLISECONDS)); |
448 |
< |
} catch (InterruptedException e){ |
449 |
< |
fail("Unexpected exception"); |
377 |
< |
} |
441 |
> |
/** |
442 |
> |
* timed pool with zero timeout succeeds when non-empty, else times out |
443 |
> |
*/ |
444 |
> |
public void testTimedPoll0() throws InterruptedException { |
445 |
> |
DelayQueue q = populatedQueue(SIZE); |
446 |
> |
for (int i = 0; i < SIZE; ++i) { |
447 |
> |
assertEquals(new PDelay(i), ((PDelay)q.poll(0, MILLISECONDS))); |
448 |
> |
} |
449 |
> |
assertNull(q.poll(0, MILLISECONDS)); |
450 |
|
} |
451 |
|
|
452 |
< |
public void testTimedPoll() { |
453 |
< |
try { |
454 |
< |
DelayQueue q = fullQueue(N); |
455 |
< |
for (int i = 0; i < N; ++i) { |
456 |
< |
assertEquals(new PDelay(i), ((PDelay)q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS))); |
457 |
< |
} |
458 |
< |
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"); |
452 |
> |
/** |
453 |
> |
* timed pool with nonzero timeout succeeds when non-empty, else times out |
454 |
> |
*/ |
455 |
> |
public void testTimedPoll() throws InterruptedException { |
456 |
> |
DelayQueue q = populatedQueue(SIZE); |
457 |
> |
for (int i = 0; i < SIZE; ++i) { |
458 |
> |
assertEquals(new PDelay(i), ((PDelay)q.poll(SHORT_DELAY_MS, MILLISECONDS))); |
459 |
|
} |
460 |
+ |
assertNull(q.poll(SHORT_DELAY_MS, MILLISECONDS)); |
461 |
|
} |
462 |
|
|
463 |
< |
public void testTimedPollWithOffer(){ |
464 |
< |
final DelayQueue q = new DelayQueue(); |
465 |
< |
Thread t = new Thread(new Runnable() { |
466 |
< |
public void run(){ |
467 |
< |
try { |
468 |
< |
assertNull(q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS)); |
469 |
< |
q.poll(LONG_DELAY_MS, TimeUnit.MILLISECONDS); |
470 |
< |
q.poll(LONG_DELAY_MS, TimeUnit.MILLISECONDS); |
471 |
< |
fail("Should block"); |
472 |
< |
} catch (InterruptedException success) { } |
463 |
> |
/** |
464 |
> |
* Interrupted timed poll throws InterruptedException instead of |
465 |
> |
* returning timeout status |
466 |
> |
*/ |
467 |
> |
public void testInterruptedTimedPoll() throws InterruptedException { |
468 |
> |
Thread t = new Thread(new CheckedRunnable() { |
469 |
> |
public void realRun() throws InterruptedException { |
470 |
> |
DelayQueue q = populatedQueue(SIZE); |
471 |
> |
for (int i = 0; i < SIZE; ++i) { |
472 |
> |
assertEquals(new PDelay(i), ((PDelay)q.poll(SHORT_DELAY_MS, MILLISECONDS))); |
473 |
|
} |
474 |
< |
}); |
475 |
< |
try { |
476 |
< |
t.start(); |
477 |
< |
Thread.sleep(SHORT_DELAY_MS * 2); |
478 |
< |
assertTrue(q.offer(new PDelay(0), SHORT_DELAY_MS, TimeUnit.MILLISECONDS)); |
479 |
< |
t.interrupt(); |
480 |
< |
t.join(); |
481 |
< |
} catch (Exception e){ |
482 |
< |
fail("Unexpected exception"); |
483 |
< |
} |
484 |
< |
} |
485 |
< |
|
486 |
< |
|
487 |
< |
public void testPeek(){ |
488 |
< |
DelayQueue q = fullQueue(N); |
489 |
< |
for (int i = 0; i < N; ++i) { |
474 |
> |
try { |
475 |
> |
q.poll(SMALL_DELAY_MS, MILLISECONDS); |
476 |
> |
shouldThrow(); |
477 |
> |
} catch (InterruptedException success) {} |
478 |
> |
}}); |
479 |
> |
|
480 |
> |
t.start(); |
481 |
> |
Thread.sleep(SHORT_DELAY_MS); |
482 |
> |
t.interrupt(); |
483 |
> |
t.join(); |
484 |
> |
} |
485 |
> |
|
486 |
> |
/** |
487 |
> |
* timed poll before a delayed offer fails; after offer succeeds; |
488 |
> |
* on interruption throws |
489 |
> |
*/ |
490 |
> |
public void testTimedPollWithOffer() throws InterruptedException { |
491 |
> |
final DelayQueue q = new DelayQueue(); |
492 |
> |
final PDelay pdelay = new PDelay(0); |
493 |
> |
final CheckedBarrier barrier = new CheckedBarrier(2); |
494 |
> |
Thread t = new Thread(new CheckedRunnable() { |
495 |
> |
public void realRun() throws InterruptedException { |
496 |
> |
assertNull(q.poll(SHORT_DELAY_MS, MILLISECONDS)); |
497 |
> |
|
498 |
> |
barrier.await(); |
499 |
> |
assertSame(pdelay, q.poll(MEDIUM_DELAY_MS, MILLISECONDS)); |
500 |
> |
|
501 |
> |
Thread.currentThread().interrupt(); |
502 |
> |
try { |
503 |
> |
q.poll(SHORT_DELAY_MS, MILLISECONDS); |
504 |
> |
shouldThrow(); |
505 |
> |
} catch (InterruptedException success) {} |
506 |
> |
|
507 |
> |
barrier.await(); |
508 |
> |
try { |
509 |
> |
q.poll(MEDIUM_DELAY_MS, MILLISECONDS); |
510 |
> |
shouldThrow(); |
511 |
> |
} catch (InterruptedException success) {} |
512 |
> |
}}); |
513 |
> |
|
514 |
> |
t.start(); |
515 |
> |
barrier.await(); |
516 |
> |
assertTrue(q.offer(pdelay, SHORT_DELAY_MS, MILLISECONDS)); |
517 |
> |
barrier.await(); |
518 |
> |
sleep(SHORT_DELAY_MS); |
519 |
> |
t.interrupt(); |
520 |
> |
t.join(); |
521 |
> |
} |
522 |
> |
|
523 |
> |
|
524 |
> |
/** |
525 |
> |
* peek returns next element, or null if empty |
526 |
> |
*/ |
527 |
> |
public void testPeek() { |
528 |
> |
DelayQueue q = populatedQueue(SIZE); |
529 |
> |
for (int i = 0; i < SIZE; ++i) { |
530 |
|
assertEquals(new PDelay(i), ((PDelay)q.peek())); |
531 |
< |
q.poll(); |
532 |
< |
assertTrue(q.peek() == null || |
533 |
< |
i != ((PDelay)q.peek()).intValue()); |
531 |
> |
assertEquals(new PDelay(i), ((PDelay)q.poll())); |
532 |
> |
if (q.isEmpty()) |
533 |
> |
assertNull(q.peek()); |
534 |
> |
else |
535 |
> |
assertFalse(new PDelay(i).equals(q.peek())); |
536 |
|
} |
537 |
< |
assertNull(q.peek()); |
537 |
> |
assertNull(q.peek()); |
538 |
|
} |
539 |
|
|
540 |
< |
public void testElement(){ |
541 |
< |
DelayQueue q = fullQueue(N); |
542 |
< |
for (int i = 0; i < N; ++i) { |
540 |
> |
/** |
541 |
> |
* element returns next element, or throws NSEE if empty |
542 |
> |
*/ |
543 |
> |
public void testElement() { |
544 |
> |
DelayQueue q = populatedQueue(SIZE); |
545 |
> |
for (int i = 0; i < SIZE; ++i) { |
546 |
|
assertEquals(new PDelay(i), ((PDelay)q.element())); |
547 |
|
q.poll(); |
548 |
|
} |
549 |
|
try { |
550 |
|
q.element(); |
551 |
< |
fail("no such element"); |
552 |
< |
} |
460 |
< |
catch (NoSuchElementException success) {} |
551 |
> |
shouldThrow(); |
552 |
> |
} catch (NoSuchElementException success) {} |
553 |
|
} |
554 |
|
|
555 |
< |
public void testRemove(){ |
556 |
< |
DelayQueue q = fullQueue(N); |
557 |
< |
for (int i = 0; i < N; ++i) { |
555 |
> |
/** |
556 |
> |
* remove removes next element, or throws NSEE if empty |
557 |
> |
*/ |
558 |
> |
public void testRemove() { |
559 |
> |
DelayQueue q = populatedQueue(SIZE); |
560 |
> |
for (int i = 0; i < SIZE; ++i) { |
561 |
|
assertEquals(new PDelay(i), ((PDelay)q.remove())); |
562 |
|
} |
563 |
|
try { |
564 |
|
q.remove(); |
565 |
< |
fail("remove should throw"); |
566 |
< |
} catch (NoSuchElementException success){ |
472 |
< |
} |
565 |
> |
shouldThrow(); |
566 |
> |
} catch (NoSuchElementException success) {} |
567 |
|
} |
568 |
|
|
569 |
< |
public void testRemoveElement(){ |
570 |
< |
DelayQueue q = fullQueue(N); |
571 |
< |
for (int i = 1; i < N; i+=2) { |
569 |
> |
/** |
570 |
> |
* remove(x) removes x and returns true if present |
571 |
> |
*/ |
572 |
> |
public void testRemoveElement() { |
573 |
> |
DelayQueue q = populatedQueue(SIZE); |
574 |
> |
for (int i = 1; i < SIZE; i+=2) { |
575 |
|
assertTrue(q.remove(new PDelay(i))); |
576 |
|
} |
577 |
< |
for (int i = 0; i < N; i+=2) { |
577 |
> |
for (int i = 0; i < SIZE; i+=2) { |
578 |
|
assertTrue(q.remove(new PDelay(i))); |
579 |
|
assertFalse(q.remove(new PDelay(i+1))); |
580 |
|
} |
581 |
|
assertTrue(q.isEmpty()); |
582 |
|
} |
583 |
< |
|
584 |
< |
public void testContains(){ |
585 |
< |
DelayQueue q = fullQueue(N); |
586 |
< |
for (int i = 0; i < N; ++i) { |
583 |
> |
|
584 |
> |
/** |
585 |
> |
* contains(x) reports true when elements added but not yet removed |
586 |
> |
*/ |
587 |
> |
public void testContains() { |
588 |
> |
DelayQueue q = populatedQueue(SIZE); |
589 |
> |
for (int i = 0; i < SIZE; ++i) { |
590 |
|
assertTrue(q.contains(new PDelay(i))); |
591 |
|
q.poll(); |
592 |
|
assertFalse(q.contains(new PDelay(i))); |
593 |
|
} |
594 |
|
} |
595 |
|
|
596 |
< |
public void testClear(){ |
597 |
< |
DelayQueue q = fullQueue(N); |
596 |
> |
/** |
597 |
> |
* clear removes all elements |
598 |
> |
*/ |
599 |
> |
public void testClear() { |
600 |
> |
DelayQueue q = populatedQueue(SIZE); |
601 |
|
q.clear(); |
602 |
|
assertTrue(q.isEmpty()); |
603 |
|
assertEquals(0, q.size()); |
604 |
|
assertEquals(NOCAP, q.remainingCapacity()); |
605 |
< |
q.add(new PDelay(1)); |
605 |
> |
PDelay x = new PDelay(1); |
606 |
> |
q.add(x); |
607 |
|
assertFalse(q.isEmpty()); |
608 |
+ |
assertTrue(q.contains(x)); |
609 |
|
q.clear(); |
610 |
|
assertTrue(q.isEmpty()); |
611 |
|
} |
612 |
|
|
613 |
< |
public void testContainsAll(){ |
614 |
< |
DelayQueue q = fullQueue(N); |
613 |
> |
/** |
614 |
> |
* containsAll(c) is true when c contains a subset of elements |
615 |
> |
*/ |
616 |
> |
public void testContainsAll() { |
617 |
> |
DelayQueue q = populatedQueue(SIZE); |
618 |
|
DelayQueue p = new DelayQueue(); |
619 |
< |
for (int i = 0; i < N; ++i) { |
619 |
> |
for (int i = 0; i < SIZE; ++i) { |
620 |
|
assertTrue(q.containsAll(p)); |
621 |
|
assertFalse(p.containsAll(q)); |
622 |
|
p.add(new PDelay(i)); |
624 |
|
assertTrue(p.containsAll(q)); |
625 |
|
} |
626 |
|
|
627 |
< |
public void testRetainAll(){ |
628 |
< |
DelayQueue q = fullQueue(N); |
629 |
< |
DelayQueue p = fullQueue(N); |
630 |
< |
for (int i = 0; i < N; ++i) { |
627 |
> |
/** |
628 |
> |
* retainAll(c) retains only those elements of c and reports true if changed |
629 |
> |
*/ |
630 |
> |
public void testRetainAll() { |
631 |
> |
DelayQueue q = populatedQueue(SIZE); |
632 |
> |
DelayQueue p = populatedQueue(SIZE); |
633 |
> |
for (int i = 0; i < SIZE; ++i) { |
634 |
|
boolean changed = q.retainAll(p); |
635 |
|
if (i == 0) |
636 |
|
assertFalse(changed); |
638 |
|
assertTrue(changed); |
639 |
|
|
640 |
|
assertTrue(q.containsAll(p)); |
641 |
< |
assertEquals(N-i, q.size()); |
641 |
> |
assertEquals(SIZE-i, q.size()); |
642 |
|
p.remove(); |
643 |
|
} |
644 |
|
} |
645 |
|
|
646 |
< |
public void testRemoveAll(){ |
647 |
< |
for (int i = 1; i < N; ++i) { |
648 |
< |
DelayQueue q = fullQueue(N); |
649 |
< |
DelayQueue p = fullQueue(i); |
646 |
> |
/** |
647 |
> |
* removeAll(c) removes only those elements of c and reports true if changed |
648 |
> |
*/ |
649 |
> |
public void testRemoveAll() { |
650 |
> |
for (int i = 1; i < SIZE; ++i) { |
651 |
> |
DelayQueue q = populatedQueue(SIZE); |
652 |
> |
DelayQueue p = populatedQueue(i); |
653 |
|
assertTrue(q.removeAll(p)); |
654 |
< |
assertEquals(N-i, q.size()); |
654 |
> |
assertEquals(SIZE-i, q.size()); |
655 |
|
for (int j = 0; j < i; ++j) { |
656 |
|
PDelay I = (PDelay)(p.remove()); |
657 |
|
assertFalse(q.contains(I)); |
659 |
|
} |
660 |
|
} |
661 |
|
|
662 |
< |
/* |
663 |
< |
public void testEqualsAndHashCode(){ |
664 |
< |
DelayQueue q1 = fullQueue(N); |
665 |
< |
DelayQueue q2 = fullQueue(N); |
666 |
< |
assertTrue(q1.equals(q2)); |
667 |
< |
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(); |
662 |
> |
/** |
663 |
> |
* toArray contains all elements |
664 |
> |
*/ |
665 |
> |
public void testToArray() throws InterruptedException { |
666 |
> |
DelayQueue q = populatedQueue(SIZE); |
667 |
> |
Object[] o = q.toArray(); |
668 |
|
Arrays.sort(o); |
669 |
< |
try { |
670 |
< |
for(int i = 0; i < o.length; i++) |
572 |
< |
assertEquals(o[i], q.take()); |
573 |
< |
} catch (InterruptedException e){ |
574 |
< |
fail("Unexpected exception"); |
575 |
< |
} |
669 |
> |
for (int i = 0; i < o.length; i++) |
670 |
> |
assertEquals(o[i], q.take()); |
671 |
|
} |
672 |
|
|
673 |
< |
public void testToArray2(){ |
674 |
< |
DelayQueue q = fullQueue(N); |
675 |
< |
PDelay[] ints = new PDelay[N]; |
676 |
< |
ints = (PDelay[])q.toArray(ints); |
673 |
> |
/** |
674 |
> |
* toArray(a) contains all elements |
675 |
> |
*/ |
676 |
> |
public void testToArray2() throws InterruptedException { |
677 |
> |
DelayQueue q = populatedQueue(SIZE); |
678 |
> |
PDelay[] ints = new PDelay[SIZE]; |
679 |
> |
ints = (PDelay[])q.toArray(ints); |
680 |
|
Arrays.sort(ints); |
681 |
< |
try { |
682 |
< |
for(int i = 0; i < ints.length; i++) |
683 |
< |
assertEquals(ints[i], q.take()); |
684 |
< |
} catch (InterruptedException e){ |
685 |
< |
fail("Unexpected exception"); |
686 |
< |
} |
687 |
< |
} |
688 |
< |
|
689 |
< |
public void testIterator(){ |
690 |
< |
DelayQueue q = fullQueue(N); |
681 |
> |
for (int i = 0; i < ints.length; i++) |
682 |
> |
assertEquals(ints[i], q.take()); |
683 |
> |
} |
684 |
> |
|
685 |
> |
|
686 |
> |
/** |
687 |
> |
* toArray(null) throws NPE |
688 |
> |
*/ |
689 |
> |
public void testToArray_BadArg() { |
690 |
> |
DelayQueue q = populatedQueue(SIZE); |
691 |
> |
try { |
692 |
> |
Object o[] = q.toArray(null); |
693 |
> |
shouldThrow(); |
694 |
> |
} catch (NullPointerException success) {} |
695 |
> |
} |
696 |
> |
|
697 |
> |
/** |
698 |
> |
* toArray with incompatible array type throws CCE |
699 |
> |
*/ |
700 |
> |
public void testToArray1_BadArg() { |
701 |
> |
DelayQueue q = populatedQueue(SIZE); |
702 |
> |
try { |
703 |
> |
Object o[] = q.toArray(new String[10]); |
704 |
> |
shouldThrow(); |
705 |
> |
} catch (ArrayStoreException success) {} |
706 |
> |
} |
707 |
> |
|
708 |
> |
/** |
709 |
> |
* iterator iterates through all elements |
710 |
> |
*/ |
711 |
> |
public void testIterator() { |
712 |
> |
DelayQueue q = populatedQueue(SIZE); |
713 |
|
int i = 0; |
714 |
< |
Iterator it = q.iterator(); |
715 |
< |
while(it.hasNext()) { |
714 |
> |
Iterator it = q.iterator(); |
715 |
> |
while (it.hasNext()) { |
716 |
|
assertTrue(q.contains(it.next())); |
717 |
|
++i; |
718 |
|
} |
719 |
< |
assertEquals(i, N); |
719 |
> |
assertEquals(i, SIZE); |
720 |
|
} |
721 |
|
|
722 |
< |
public void testIteratorRemove () { |
723 |
< |
|
722 |
> |
/** |
723 |
> |
* iterator.remove removes current element |
724 |
> |
*/ |
725 |
> |
public void testIteratorRemove() { |
726 |
|
final DelayQueue q = new DelayQueue(); |
605 |
– |
|
727 |
|
q.add(new PDelay(2)); |
728 |
|
q.add(new PDelay(1)); |
729 |
|
q.add(new PDelay(3)); |
609 |
– |
|
730 |
|
Iterator it = q.iterator(); |
731 |
|
it.next(); |
732 |
|
it.remove(); |
613 |
– |
|
733 |
|
it = q.iterator(); |
734 |
|
assertEquals(it.next(), new PDelay(2)); |
735 |
|
assertEquals(it.next(), new PDelay(3)); |
737 |
|
} |
738 |
|
|
739 |
|
|
740 |
< |
public void testToString(){ |
741 |
< |
DelayQueue q = fullQueue(N); |
740 |
> |
/** |
741 |
> |
* toString contains toStrings of elements |
742 |
> |
*/ |
743 |
> |
public void testToString() { |
744 |
> |
DelayQueue q = populatedQueue(SIZE); |
745 |
|
String s = q.toString(); |
746 |
< |
for (int i = 0; i < N; ++i) { |
747 |
< |
assertTrue(s.indexOf(String.valueOf(i)) >= 0); |
746 |
> |
for (int i = 0; i < SIZE; ++i) { |
747 |
> |
assertTrue(s.indexOf(String.valueOf(Integer.MIN_VALUE+i)) >= 0); |
748 |
|
} |
749 |
< |
} |
749 |
> |
} |
750 |
|
|
751 |
+ |
/** |
752 |
+ |
* offer transfers elements across Executor tasks |
753 |
+ |
*/ |
754 |
|
public void testPollInExecutor() { |
630 |
– |
|
755 |
|
final DelayQueue q = new DelayQueue(); |
632 |
– |
|
756 |
|
ExecutorService executor = Executors.newFixedThreadPool(2); |
757 |
+ |
executor.execute(new CheckedRunnable() { |
758 |
+ |
public void realRun() throws InterruptedException { |
759 |
+ |
assertNull(q.poll()); |
760 |
+ |
assertTrue(null != q.poll(MEDIUM_DELAY_MS, MILLISECONDS)); |
761 |
+ |
assertTrue(q.isEmpty()); |
762 |
+ |
}}); |
763 |
+ |
|
764 |
+ |
executor.execute(new CheckedRunnable() { |
765 |
+ |
public void realRun() throws InterruptedException { |
766 |
+ |
Thread.sleep(SHORT_DELAY_MS); |
767 |
+ |
q.put(new PDelay(1)); |
768 |
+ |
}}); |
769 |
|
|
770 |
< |
executor.execute(new Runnable() { |
771 |
< |
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 |
< |
}); |
770 |
> |
joinPool(executor); |
771 |
> |
} |
772 |
|
|
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(); |
773 |
|
|
774 |
+ |
/** |
775 |
+ |
* Delayed actions do not occur until their delay elapses |
776 |
+ |
*/ |
777 |
+ |
public void testDelay() throws InterruptedException { |
778 |
+ |
DelayQueue<NanoDelay> q = new DelayQueue<NanoDelay>(); |
779 |
+ |
for (int i = 0; i < SIZE; ++i) |
780 |
+ |
q.add(new NanoDelay(1000000L * (SIZE - i))); |
781 |
+ |
|
782 |
+ |
long last = 0; |
783 |
+ |
for (int i = 0; i < SIZE; ++i) { |
784 |
+ |
NanoDelay e = q.take(); |
785 |
+ |
long tt = e.getTriggerTime(); |
786 |
+ |
assertTrue(System.nanoTime() - tt >= 0); |
787 |
+ |
if (i != 0) |
788 |
+ |
assertTrue(tt >= last); |
789 |
+ |
last = tt; |
790 |
+ |
} |
791 |
+ |
assertTrue(q.isEmpty()); |
792 |
|
} |
793 |
|
|
794 |
< |
static class NanoDelay implements Delayed { |
795 |
< |
long trigger; |
796 |
< |
NanoDelay(long i) { |
797 |
< |
trigger = System.nanoTime() + i; |
798 |
< |
} |
799 |
< |
public int compareTo(Object y) { |
800 |
< |
long i = trigger; |
801 |
< |
long j = ((NanoDelay)y).trigger; |
672 |
< |
if (i < j) return -1; |
673 |
< |
if (i > j) return 1; |
674 |
< |
return 0; |
675 |
< |
} |
794 |
> |
/** |
795 |
> |
* peek of a non-empty queue returns non-null even if not expired |
796 |
> |
*/ |
797 |
> |
public void testPeekDelayed() { |
798 |
> |
DelayQueue q = new DelayQueue(); |
799 |
> |
q.add(new NanoDelay(Long.MAX_VALUE)); |
800 |
> |
assertNotNull(q.peek()); |
801 |
> |
} |
802 |
|
|
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; |
683 |
– |
} |
803 |
|
|
804 |
< |
public boolean equals(Object other) { |
805 |
< |
return ((NanoDelay)other).trigger == trigger; |
806 |
< |
} |
807 |
< |
public boolean equals(NanoDelay other) { |
808 |
< |
return ((NanoDelay)other).trigger == trigger; |
809 |
< |
} |
804 |
> |
/** |
805 |
> |
* poll of a non-empty queue returns null if no expired elements. |
806 |
> |
*/ |
807 |
> |
public void testPollDelayed() { |
808 |
> |
DelayQueue q = new DelayQueue(); |
809 |
> |
q.add(new NanoDelay(Long.MAX_VALUE)); |
810 |
> |
assertNull(q.poll()); |
811 |
> |
} |
812 |
|
|
813 |
< |
public long getDelay(TimeUnit unit) { |
814 |
< |
long n = trigger - System.nanoTime(); |
815 |
< |
return unit.convert(n, TimeUnit.NANOSECONDS); |
816 |
< |
} |
813 |
> |
/** |
814 |
> |
* timed poll of a non-empty queue returns null if no expired elements. |
815 |
> |
*/ |
816 |
> |
public void testTimedPollDelayed() throws InterruptedException { |
817 |
> |
DelayQueue q = new DelayQueue(); |
818 |
> |
q.add(new NanoDelay(LONG_DELAY_MS * 1000000L)); |
819 |
> |
assertNull(q.poll(SHORT_DELAY_MS, MILLISECONDS)); |
820 |
> |
} |
821 |
|
|
822 |
< |
public long getTriggerTime() { |
823 |
< |
return trigger; |
824 |
< |
} |
822 |
> |
/** |
823 |
> |
* drainTo(null) throws NPE |
824 |
> |
*/ |
825 |
> |
public void testDrainToNull() { |
826 |
> |
DelayQueue q = populatedQueue(SIZE); |
827 |
> |
try { |
828 |
> |
q.drainTo(null); |
829 |
> |
shouldThrow(); |
830 |
> |
} catch (NullPointerException success) {} |
831 |
> |
} |
832 |
|
|
833 |
< |
public String toString() { |
834 |
< |
return String.valueOf(trigger); |
835 |
< |
} |
833 |
> |
/** |
834 |
> |
* drainTo(this) throws IAE |
835 |
> |
*/ |
836 |
> |
public void testDrainToSelf() { |
837 |
> |
DelayQueue q = populatedQueue(SIZE); |
838 |
> |
try { |
839 |
> |
q.drainTo(q); |
840 |
> |
shouldThrow(); |
841 |
> |
} catch (IllegalArgumentException success) {} |
842 |
|
} |
843 |
|
|
844 |
< |
public void testDelay() { |
844 |
> |
/** |
845 |
> |
* drainTo(c) empties queue into another collection c |
846 |
> |
*/ |
847 |
> |
public void testDrainTo() { |
848 |
|
DelayQueue q = new DelayQueue(); |
849 |
< |
NanoDelay[] elements = new NanoDelay[N]; |
850 |
< |
for (int i = 0; i < N; ++i) { |
851 |
< |
elements[i] = new NanoDelay(1000000000L + 1000000L * (N - i)); |
852 |
< |
} |
853 |
< |
for (int i = 0; i < N; ++i) { |
854 |
< |
q.add(elements[i]); |
855 |
< |
} |
849 |
> |
PDelay[] elems = new PDelay[SIZE]; |
850 |
> |
for (int i = 0; i < SIZE; ++i) { |
851 |
> |
elems[i] = new PDelay(i); |
852 |
> |
q.add(elems[i]); |
853 |
> |
} |
854 |
> |
ArrayList l = new ArrayList(); |
855 |
> |
q.drainTo(l); |
856 |
> |
assertEquals(q.size(), 0); |
857 |
> |
for (int i = 0; i < SIZE; ++i) |
858 |
> |
assertEquals(l.get(i), elems[i]); |
859 |
> |
q.add(elems[0]); |
860 |
> |
q.add(elems[1]); |
861 |
> |
assertFalse(q.isEmpty()); |
862 |
> |
assertTrue(q.contains(elems[0])); |
863 |
> |
assertTrue(q.contains(elems[1])); |
864 |
> |
l.clear(); |
865 |
> |
q.drainTo(l); |
866 |
> |
assertEquals(q.size(), 0); |
867 |
> |
assertEquals(l.size(), 2); |
868 |
> |
for (int i = 0; i < 2; ++i) |
869 |
> |
assertEquals(l.get(i), elems[i]); |
870 |
> |
} |
871 |
|
|
872 |
+ |
/** |
873 |
+ |
* drainTo empties queue |
874 |
+ |
*/ |
875 |
+ |
public void testDrainToWithActivePut() throws InterruptedException { |
876 |
+ |
final DelayQueue q = populatedQueue(SIZE); |
877 |
+ |
Thread t = new Thread(new CheckedRunnable() { |
878 |
+ |
public void realRun() { |
879 |
+ |
q.put(new PDelay(SIZE+1)); |
880 |
+ |
}}); |
881 |
+ |
|
882 |
+ |
t.start(); |
883 |
+ |
ArrayList l = new ArrayList(); |
884 |
+ |
q.drainTo(l); |
885 |
+ |
assertTrue(l.size() >= SIZE); |
886 |
+ |
t.join(); |
887 |
+ |
assertTrue(q.size() + l.size() >= SIZE); |
888 |
+ |
} |
889 |
+ |
|
890 |
+ |
/** |
891 |
+ |
* drainTo(null, n) throws NPE |
892 |
+ |
*/ |
893 |
+ |
public void testDrainToNullN() { |
894 |
+ |
DelayQueue q = populatedQueue(SIZE); |
895 |
|
try { |
896 |
< |
long last = 0; |
897 |
< |
for (int i = 0; i < N; ++i) { |
898 |
< |
NanoDelay e = (NanoDelay)(q.take()); |
899 |
< |
long tt = e.getTriggerTime(); |
900 |
< |
assertTrue(tt <= System.nanoTime()); |
901 |
< |
if (i != 0) |
902 |
< |
assertTrue(tt >= last); |
903 |
< |
last = tt; |
904 |
< |
} |
905 |
< |
} |
906 |
< |
catch(InterruptedException ie) { |
907 |
< |
fail("Unexpected Exception"); |
896 |
> |
q.drainTo(null, 0); |
897 |
> |
shouldThrow(); |
898 |
> |
} catch (NullPointerException success) {} |
899 |
> |
} |
900 |
> |
|
901 |
> |
/** |
902 |
> |
* drainTo(this, n) throws IAE |
903 |
> |
*/ |
904 |
> |
public void testDrainToSelfN() { |
905 |
> |
DelayQueue q = populatedQueue(SIZE); |
906 |
> |
try { |
907 |
> |
q.drainTo(q, 0); |
908 |
> |
shouldThrow(); |
909 |
> |
} catch (IllegalArgumentException success) {} |
910 |
> |
} |
911 |
> |
|
912 |
> |
/** |
913 |
> |
* drainTo(c, n) empties first min(n, size) elements of queue into c |
914 |
> |
*/ |
915 |
> |
public void testDrainToN() { |
916 |
> |
for (int i = 0; i < SIZE + 2; ++i) { |
917 |
> |
DelayQueue q = populatedQueue(SIZE); |
918 |
> |
ArrayList l = new ArrayList(); |
919 |
> |
q.drainTo(l, i); |
920 |
> |
int k = (i < SIZE) ? i : SIZE; |
921 |
> |
assertEquals(q.size(), SIZE-k); |
922 |
> |
assertEquals(l.size(), k); |
923 |
|
} |
924 |
|
} |
925 |
|
|
926 |
+ |
|
927 |
|
} |