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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 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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/** |
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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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DelayQueue q = new DelayQueue(); |
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private DelayQueue<PDelay> populatedQueue(int n) { |
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DelayQueue<PDelay> q = new DelayQueue<PDelay>(); |
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assertTrue(q.isEmpty()); |
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for(int i = n-1; i >= 0; i-=2) |
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assertTrue(q.offer(new PDelay(i))); |
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for(int i = (n & 1); i < n; i+=2) |
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assertTrue(q.offer(new PDelay(i))); |
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for (int i = n-1; i >= 0; i-=2) |
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assertTrue(q.offer(new PDelay(i))); |
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for (int i = (n & 1); i < n; i+=2) |
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assertTrue(q.offer(new PDelay(i))); |
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assertFalse(q.isEmpty()); |
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assertEquals(NOCAP, q.remainingCapacity()); |
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assertEquals(n, q.size()); |
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assertEquals(n, q.size()); |
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return q; |
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} |
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|
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public void testConstructor1(){ |
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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(); |
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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 |
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*/ |
156 |
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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); |
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DelayQueue q = new DelayQueue(Arrays.asList(ints)); |
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for (int i = 0; i < N; ++i) |
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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 |
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public void testConstructor6() { |
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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 |
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DelayQueue q = new DelayQueue(Arrays.asList(ints)); |
174 |
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for (int i = 0; i < SIZE; ++i) |
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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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*/ |
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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) { |
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/** |
194 |
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* remainingCapacity does not change when elements added or removed, |
195 |
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* but size does |
196 |
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*/ |
197 |
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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()); |
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assertEquals(N-i, q.size()); |
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assertEquals(SIZE-i, q.size()); |
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q.remove(); |
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} |
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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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} |
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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 |
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} catch (NullPointerException success) { } |
218 |
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shouldThrow(); |
219 |
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} catch (NullPointerException success) {} |
220 |
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} |
221 |
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|
222 |
+ |
/** |
223 |
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* add(null) throws NPE |
224 |
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*/ |
225 |
+ |
public void testAddNull() { |
226 |
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try { |
227 |
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DelayQueue q = new DelayQueue(); |
228 |
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q.add(null); |
229 |
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shouldThrow(); |
230 |
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} catch (NullPointerException success) {} |
231 |
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} |
232 |
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|
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() { |
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DelayQueue q = new DelayQueue(); |
238 |
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assertTrue(q.offer(new PDelay(0))); |
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assertTrue(q.offer(new PDelay(1))); |
240 |
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} |
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|
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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 |
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public void testAddAll1(){ |
253 |
> |
/** |
254 |
> |
* addAll(null) throws NPE |
255 |
> |
*/ |
256 |
> |
public void testAddAll1() { |
257 |
|
try { |
258 |
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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 |
< |
public void testPutNull() { |
319 |
< |
try { |
318 |
> |
/** |
319 |
> |
* put(null) throws NPE |
320 |
> |
*/ |
321 |
> |
public void testPutNull() { |
322 |
> |
try { |
323 |
|
DelayQueue q = new DelayQueue(); |
324 |
|
q.put(null); |
325 |
< |
fail("put should throw NPE"); |
326 |
< |
} |
327 |
< |
catch (NullPointerException success){ |
328 |
< |
} |
329 |
< |
} |
330 |
< |
|
331 |
< |
public void testPut() { |
332 |
< |
try { |
333 |
< |
DelayQueue q = new DelayQueue(); |
334 |
< |
for (int i = 0; i < N; ++i) { |
335 |
< |
PDelay I = new PDelay(i); |
336 |
< |
q.put(I); |
337 |
< |
assertTrue(q.contains(I)); |
244 |
< |
} |
245 |
< |
assertEquals(N, q.size()); |
246 |
< |
} |
247 |
< |
finally { |
325 |
> |
shouldThrow(); |
326 |
> |
} catch (NullPointerException success) {} |
327 |
> |
} |
328 |
> |
|
329 |
> |
/** |
330 |
> |
* all elements successfully put are contained |
331 |
> |
*/ |
332 |
> |
public void testPut() { |
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 |
+ |
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 |
> |
delay(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 { |
379 |
< |
t.start(); |
380 |
< |
Thread.sleep(SHORT_DELAY_MS); |
381 |
< |
t.interrupt(); |
382 |
< |
t.join(); |
383 |
< |
} catch (Exception e){ |
384 |
< |
fail("Unexpected exception"); |
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 |
> |
delay(SMALL_DELAY_MS); |
377 |
> |
t.interrupt(); |
378 |
> |
t.join(); |
379 |
> |
} |
380 |
> |
|
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 testTake(){ |
392 |
< |
try { |
393 |
< |
DelayQueue q = fullQueue(N); |
394 |
< |
for (int i = 0; i < N; ++i) { |
395 |
< |
assertEquals(new PDelay(i), ((PDelay)q.take())); |
396 |
< |
} |
397 |
< |
} catch (InterruptedException e){ |
398 |
< |
fail("Unexpected exception"); |
399 |
< |
} |
391 |
> |
/** |
392 |
> |
* take blocks interruptibly when empty |
393 |
> |
*/ |
394 |
> |
public void testTakeFromEmptyBlocksInterruptibly() |
395 |
> |
throws InterruptedException { |
396 |
> |
final BlockingQueue q = new DelayQueue(); |
397 |
> |
final CountDownLatch threadStarted = new CountDownLatch(1); |
398 |
> |
Thread t = newStartedThread(new CheckedRunnable() { |
399 |
> |
public void realRun() { |
400 |
> |
long t0 = System.nanoTime(); |
401 |
> |
threadStarted.countDown(); |
402 |
> |
try { |
403 |
> |
q.take(); |
404 |
> |
shouldThrow(); |
405 |
> |
} catch (InterruptedException success) {} |
406 |
> |
assertTrue(millisElapsedSince(t0) >= SHORT_DELAY_MS); |
407 |
> |
}}); |
408 |
> |
threadStarted.await(); |
409 |
> |
delay(SHORT_DELAY_MS); |
410 |
> |
assertTrue(t.isAlive()); |
411 |
> |
t.interrupt(); |
412 |
> |
awaitTermination(t, MEDIUM_DELAY_MS); |
413 |
> |
assertFalse(t.isAlive()); |
414 |
|
} |
415 |
|
|
416 |
< |
public void testTakeFromEmpty() { |
417 |
< |
final DelayQueue q = new DelayQueue(); |
418 |
< |
Thread t = new Thread(new Runnable() { |
419 |
< |
public void run(){ |
420 |
< |
try { |
421 |
< |
q.take(); |
422 |
< |
fail("Should block"); |
423 |
< |
} catch (InterruptedException success){ } |
416 |
> |
/** |
417 |
> |
* Take removes existing elements until empty, then blocks interruptibly |
418 |
> |
*/ |
419 |
> |
public void testBlockingTake() throws InterruptedException { |
420 |
> |
final DelayQueue q = populatedQueue(SIZE); |
421 |
> |
Thread t = new Thread(new CheckedRunnable() { |
422 |
> |
public void realRun() throws InterruptedException { |
423 |
> |
for (int i = 0; i < SIZE; ++i) { |
424 |
> |
assertEquals(new PDelay(i), ((PDelay)q.take())); |
425 |
|
} |
426 |
< |
}); |
427 |
< |
try { |
428 |
< |
t.start(); |
429 |
< |
Thread.sleep(SHORT_DELAY_MS); |
430 |
< |
t.interrupt(); |
329 |
< |
t.join(); |
330 |
< |
} catch (Exception e){ |
331 |
< |
fail("Unexpected exception"); |
332 |
< |
} |
333 |
< |
} |
426 |
> |
try { |
427 |
> |
q.take(); |
428 |
> |
shouldThrow(); |
429 |
> |
} catch (InterruptedException success) {} |
430 |
> |
}}); |
431 |
|
|
335 |
– |
public void testBlockingTake(){ |
336 |
– |
Thread t = new Thread(new Runnable() { |
337 |
– |
public void run() { |
338 |
– |
try { |
339 |
– |
DelayQueue q = fullQueue(N); |
340 |
– |
for (int i = 0; i < N; ++i) { |
341 |
– |
assertEquals(new PDelay(i), ((PDelay)q.take())); |
342 |
– |
} |
343 |
– |
q.take(); |
344 |
– |
fail("take should block"); |
345 |
– |
} catch (InterruptedException success){ |
346 |
– |
} |
347 |
– |
}}); |
432 |
|
t.start(); |
433 |
< |
try { |
434 |
< |
Thread.sleep(SHORT_DELAY_MS); |
435 |
< |
t.interrupt(); |
352 |
< |
t.join(); |
353 |
< |
} |
354 |
< |
catch (InterruptedException ie) { |
355 |
< |
fail("Unexpected exception"); |
356 |
< |
} |
433 |
> |
delay(SHORT_DELAY_MS); |
434 |
> |
t.interrupt(); |
435 |
> |
t.join(); |
436 |
|
} |
437 |
|
|
438 |
|
|
439 |
< |
public void testPoll(){ |
440 |
< |
DelayQueue q = fullQueue(N); |
441 |
< |
for (int i = 0; i < N; ++i) { |
439 |
> |
/** |
440 |
> |
* poll succeeds unless empty |
441 |
> |
*/ |
442 |
> |
public void testPoll() { |
443 |
> |
DelayQueue q = populatedQueue(SIZE); |
444 |
> |
for (int i = 0; i < SIZE; ++i) { |
445 |
|
assertEquals(new PDelay(i), ((PDelay)q.poll())); |
446 |
|
} |
447 |
< |
assertNull(q.poll()); |
447 |
> |
assertNull(q.poll()); |
448 |
|
} |
449 |
|
|
450 |
< |
public void testTimedPoll0() { |
451 |
< |
try { |
452 |
< |
DelayQueue q = fullQueue(N); |
453 |
< |
for (int i = 0; i < N; ++i) { |
454 |
< |
assertEquals(new PDelay(i), ((PDelay)q.poll(0, TimeUnit.MILLISECONDS))); |
455 |
< |
} |
456 |
< |
assertNull(q.poll(0, TimeUnit.MILLISECONDS)); |
457 |
< |
} catch (InterruptedException e){ |
458 |
< |
fail("Unexpected exception"); |
377 |
< |
} |
450 |
> |
/** |
451 |
> |
* timed poll with zero timeout succeeds when non-empty, else times out |
452 |
> |
*/ |
453 |
> |
public void testTimedPoll0() throws InterruptedException { |
454 |
> |
DelayQueue q = populatedQueue(SIZE); |
455 |
> |
for (int i = 0; i < SIZE; ++i) { |
456 |
> |
assertEquals(new PDelay(i), ((PDelay)q.poll(0, MILLISECONDS))); |
457 |
> |
} |
458 |
> |
assertNull(q.poll(0, MILLISECONDS)); |
459 |
|
} |
460 |
|
|
461 |
< |
public void testTimedPoll() { |
462 |
< |
try { |
463 |
< |
DelayQueue q = fullQueue(N); |
464 |
< |
for (int i = 0; i < N; ++i) { |
465 |
< |
assertEquals(new PDelay(i), ((PDelay)q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS))); |
466 |
< |
} |
467 |
< |
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"); |
461 |
> |
/** |
462 |
> |
* timed poll with nonzero timeout succeeds when non-empty, else times out |
463 |
> |
*/ |
464 |
> |
public void testTimedPoll() throws InterruptedException { |
465 |
> |
DelayQueue q = populatedQueue(SIZE); |
466 |
> |
for (int i = 0; i < SIZE; ++i) { |
467 |
> |
assertEquals(new PDelay(i), ((PDelay)q.poll(SHORT_DELAY_MS, MILLISECONDS))); |
468 |
|
} |
469 |
+ |
assertNull(q.poll(SHORT_DELAY_MS, MILLISECONDS)); |
470 |
|
} |
471 |
|
|
472 |
< |
public void testTimedPollWithOffer(){ |
473 |
< |
final DelayQueue q = new DelayQueue(); |
474 |
< |
Thread t = new Thread(new Runnable() { |
475 |
< |
public void run(){ |
476 |
< |
try { |
477 |
< |
assertNull(q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS)); |
478 |
< |
q.poll(LONG_DELAY_MS, TimeUnit.MILLISECONDS); |
479 |
< |
q.poll(LONG_DELAY_MS, TimeUnit.MILLISECONDS); |
480 |
< |
fail("Should block"); |
481 |
< |
} catch (InterruptedException success) { } |
472 |
> |
/** |
473 |
> |
* Interrupted timed poll throws InterruptedException instead of |
474 |
> |
* returning timeout status |
475 |
> |
*/ |
476 |
> |
public void testInterruptedTimedPoll() throws InterruptedException { |
477 |
> |
Thread t = new Thread(new CheckedRunnable() { |
478 |
> |
public void realRun() throws InterruptedException { |
479 |
> |
DelayQueue q = populatedQueue(SIZE); |
480 |
> |
for (int i = 0; i < SIZE; ++i) { |
481 |
> |
assertEquals(new PDelay(i), ((PDelay)q.poll(SHORT_DELAY_MS, MILLISECONDS))); |
482 |
|
} |
483 |
< |
}); |
484 |
< |
try { |
485 |
< |
t.start(); |
486 |
< |
Thread.sleep(SHORT_DELAY_MS * 2); |
487 |
< |
assertTrue(q.offer(new PDelay(0), SHORT_DELAY_MS, TimeUnit.MILLISECONDS)); |
488 |
< |
t.interrupt(); |
489 |
< |
t.join(); |
490 |
< |
} catch (Exception e){ |
491 |
< |
fail("Unexpected exception"); |
492 |
< |
} |
493 |
< |
} |
494 |
< |
|
495 |
< |
|
496 |
< |
public void testPeek(){ |
497 |
< |
DelayQueue q = fullQueue(N); |
498 |
< |
for (int i = 0; i < N; ++i) { |
483 |
> |
try { |
484 |
> |
q.poll(SMALL_DELAY_MS, MILLISECONDS); |
485 |
> |
shouldThrow(); |
486 |
> |
} catch (InterruptedException success) {} |
487 |
> |
}}); |
488 |
> |
|
489 |
> |
t.start(); |
490 |
> |
delay(SHORT_DELAY_MS); |
491 |
> |
t.interrupt(); |
492 |
> |
t.join(); |
493 |
> |
} |
494 |
> |
|
495 |
> |
/** |
496 |
> |
* timed poll before a delayed offer fails; after offer succeeds; |
497 |
> |
* on interruption throws |
498 |
> |
*/ |
499 |
> |
public void testTimedPollWithOffer() throws InterruptedException { |
500 |
> |
final DelayQueue q = new DelayQueue(); |
501 |
> |
final PDelay pdelay = new PDelay(0); |
502 |
> |
final CheckedBarrier barrier = new CheckedBarrier(2); |
503 |
> |
Thread t = new Thread(new CheckedRunnable() { |
504 |
> |
public void realRun() throws InterruptedException { |
505 |
> |
assertNull(q.poll(SHORT_DELAY_MS, MILLISECONDS)); |
506 |
> |
|
507 |
> |
barrier.await(); |
508 |
> |
assertSame(pdelay, q.poll(MEDIUM_DELAY_MS, MILLISECONDS)); |
509 |
> |
|
510 |
> |
Thread.currentThread().interrupt(); |
511 |
> |
try { |
512 |
> |
q.poll(SHORT_DELAY_MS, MILLISECONDS); |
513 |
> |
shouldThrow(); |
514 |
> |
} catch (InterruptedException success) {} |
515 |
> |
|
516 |
> |
barrier.await(); |
517 |
> |
try { |
518 |
> |
q.poll(MEDIUM_DELAY_MS, MILLISECONDS); |
519 |
> |
shouldThrow(); |
520 |
> |
} catch (InterruptedException success) {} |
521 |
> |
}}); |
522 |
> |
|
523 |
> |
t.start(); |
524 |
> |
barrier.await(); |
525 |
> |
assertTrue(q.offer(pdelay, SHORT_DELAY_MS, MILLISECONDS)); |
526 |
> |
barrier.await(); |
527 |
> |
sleep(SHORT_DELAY_MS); |
528 |
> |
t.interrupt(); |
529 |
> |
t.join(); |
530 |
> |
} |
531 |
> |
|
532 |
> |
|
533 |
> |
/** |
534 |
> |
* peek returns next element, or null if empty |
535 |
> |
*/ |
536 |
> |
public void testPeek() { |
537 |
> |
DelayQueue q = populatedQueue(SIZE); |
538 |
> |
for (int i = 0; i < SIZE; ++i) { |
539 |
|
assertEquals(new PDelay(i), ((PDelay)q.peek())); |
540 |
< |
q.poll(); |
541 |
< |
assertTrue(q.peek() == null || |
542 |
< |
i != ((PDelay)q.peek()).intValue()); |
540 |
> |
assertEquals(new PDelay(i), ((PDelay)q.poll())); |
541 |
> |
if (q.isEmpty()) |
542 |
> |
assertNull(q.peek()); |
543 |
> |
else |
544 |
> |
assertFalse(new PDelay(i).equals(q.peek())); |
545 |
|
} |
546 |
< |
assertNull(q.peek()); |
546 |
> |
assertNull(q.peek()); |
547 |
|
} |
548 |
|
|
549 |
< |
public void testElement(){ |
550 |
< |
DelayQueue q = fullQueue(N); |
551 |
< |
for (int i = 0; i < N; ++i) { |
549 |
> |
/** |
550 |
> |
* element returns next element, or throws NSEE if empty |
551 |
> |
*/ |
552 |
> |
public void testElement() { |
553 |
> |
DelayQueue q = populatedQueue(SIZE); |
554 |
> |
for (int i = 0; i < SIZE; ++i) { |
555 |
|
assertEquals(new PDelay(i), ((PDelay)q.element())); |
556 |
|
q.poll(); |
557 |
|
} |
558 |
|
try { |
559 |
|
q.element(); |
560 |
< |
fail("no such element"); |
561 |
< |
} |
460 |
< |
catch (NoSuchElementException success) {} |
560 |
> |
shouldThrow(); |
561 |
> |
} catch (NoSuchElementException success) {} |
562 |
|
} |
563 |
|
|
564 |
< |
public void testRemove(){ |
565 |
< |
DelayQueue q = fullQueue(N); |
566 |
< |
for (int i = 0; i < N; ++i) { |
564 |
> |
/** |
565 |
> |
* remove removes next element, or throws NSEE if empty |
566 |
> |
*/ |
567 |
> |
public void testRemove() { |
568 |
> |
DelayQueue q = populatedQueue(SIZE); |
569 |
> |
for (int i = 0; i < SIZE; ++i) { |
570 |
|
assertEquals(new PDelay(i), ((PDelay)q.remove())); |
571 |
|
} |
572 |
|
try { |
573 |
|
q.remove(); |
574 |
< |
fail("remove should throw"); |
575 |
< |
} catch (NoSuchElementException success){ |
472 |
< |
} |
574 |
> |
shouldThrow(); |
575 |
> |
} catch (NoSuchElementException success) {} |
576 |
|
} |
577 |
|
|
578 |
< |
public void testRemoveElement(){ |
579 |
< |
DelayQueue q = fullQueue(N); |
580 |
< |
for (int i = 1; i < N; i+=2) { |
578 |
> |
/** |
579 |
> |
* remove(x) removes x and returns true if present |
580 |
> |
*/ |
581 |
> |
public void testRemoveElement() { |
582 |
> |
DelayQueue q = populatedQueue(SIZE); |
583 |
> |
for (int i = 1; i < SIZE; i+=2) { |
584 |
|
assertTrue(q.remove(new PDelay(i))); |
585 |
|
} |
586 |
< |
for (int i = 0; i < N; i+=2) { |
586 |
> |
for (int i = 0; i < SIZE; i+=2) { |
587 |
|
assertTrue(q.remove(new PDelay(i))); |
588 |
|
assertFalse(q.remove(new PDelay(i+1))); |
589 |
|
} |
590 |
< |
assert(q.isEmpty()); |
590 |
> |
assertTrue(q.isEmpty()); |
591 |
|
} |
592 |
< |
|
593 |
< |
public void testContains(){ |
594 |
< |
DelayQueue q = fullQueue(N); |
595 |
< |
for (int i = 0; i < N; ++i) { |
592 |
> |
|
593 |
> |
/** |
594 |
> |
* contains(x) reports true when elements added but not yet removed |
595 |
> |
*/ |
596 |
> |
public void testContains() { |
597 |
> |
DelayQueue q = populatedQueue(SIZE); |
598 |
> |
for (int i = 0; i < SIZE; ++i) { |
599 |
|
assertTrue(q.contains(new PDelay(i))); |
600 |
|
q.poll(); |
601 |
|
assertFalse(q.contains(new PDelay(i))); |
602 |
|
} |
603 |
|
} |
604 |
|
|
605 |
< |
public void testClear(){ |
606 |
< |
DelayQueue q = fullQueue(N); |
605 |
> |
/** |
606 |
> |
* clear removes all elements |
607 |
> |
*/ |
608 |
> |
public void testClear() { |
609 |
> |
DelayQueue q = populatedQueue(SIZE); |
610 |
|
q.clear(); |
611 |
|
assertTrue(q.isEmpty()); |
612 |
|
assertEquals(0, q.size()); |
613 |
|
assertEquals(NOCAP, q.remainingCapacity()); |
614 |
< |
q.add(new PDelay(1)); |
614 |
> |
PDelay x = new PDelay(1); |
615 |
> |
q.add(x); |
616 |
|
assertFalse(q.isEmpty()); |
617 |
+ |
assertTrue(q.contains(x)); |
618 |
|
q.clear(); |
619 |
|
assertTrue(q.isEmpty()); |
620 |
|
} |
621 |
|
|
622 |
< |
public void testContainsAll(){ |
623 |
< |
DelayQueue q = fullQueue(N); |
622 |
> |
/** |
623 |
> |
* containsAll(c) is true when c contains a subset of elements |
624 |
> |
*/ |
625 |
> |
public void testContainsAll() { |
626 |
> |
DelayQueue q = populatedQueue(SIZE); |
627 |
|
DelayQueue p = new DelayQueue(); |
628 |
< |
for (int i = 0; i < N; ++i) { |
628 |
> |
for (int i = 0; i < SIZE; ++i) { |
629 |
|
assertTrue(q.containsAll(p)); |
630 |
|
assertFalse(p.containsAll(q)); |
631 |
|
p.add(new PDelay(i)); |
633 |
|
assertTrue(p.containsAll(q)); |
634 |
|
} |
635 |
|
|
636 |
< |
public void testRetainAll(){ |
637 |
< |
DelayQueue q = fullQueue(N); |
638 |
< |
DelayQueue p = fullQueue(N); |
639 |
< |
for (int i = 0; i < N; ++i) { |
636 |
> |
/** |
637 |
> |
* retainAll(c) retains only those elements of c and reports true if changed |
638 |
> |
*/ |
639 |
> |
public void testRetainAll() { |
640 |
> |
DelayQueue q = populatedQueue(SIZE); |
641 |
> |
DelayQueue p = populatedQueue(SIZE); |
642 |
> |
for (int i = 0; i < SIZE; ++i) { |
643 |
|
boolean changed = q.retainAll(p); |
644 |
|
if (i == 0) |
645 |
|
assertFalse(changed); |
647 |
|
assertTrue(changed); |
648 |
|
|
649 |
|
assertTrue(q.containsAll(p)); |
650 |
< |
assertEquals(N-i, q.size()); |
650 |
> |
assertEquals(SIZE-i, q.size()); |
651 |
|
p.remove(); |
652 |
|
} |
653 |
|
} |
654 |
|
|
655 |
< |
public void testRemoveAll(){ |
656 |
< |
for (int i = 1; i < N; ++i) { |
657 |
< |
DelayQueue q = fullQueue(N); |
658 |
< |
DelayQueue p = fullQueue(i); |
655 |
> |
/** |
656 |
> |
* removeAll(c) removes only those elements of c and reports true if changed |
657 |
> |
*/ |
658 |
> |
public void testRemoveAll() { |
659 |
> |
for (int i = 1; i < SIZE; ++i) { |
660 |
> |
DelayQueue q = populatedQueue(SIZE); |
661 |
> |
DelayQueue p = populatedQueue(i); |
662 |
|
assertTrue(q.removeAll(p)); |
663 |
< |
assertEquals(N-i, q.size()); |
663 |
> |
assertEquals(SIZE-i, q.size()); |
664 |
|
for (int j = 0; j < i; ++j) { |
665 |
|
PDelay I = (PDelay)(p.remove()); |
666 |
|
assertFalse(q.contains(I)); |
668 |
|
} |
669 |
|
} |
670 |
|
|
671 |
< |
/* |
672 |
< |
public void testEqualsAndHashCode(){ |
673 |
< |
DelayQueue q1 = fullQueue(N); |
674 |
< |
DelayQueue q2 = fullQueue(N); |
675 |
< |
assertTrue(q1.equals(q2)); |
676 |
< |
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(); |
671 |
> |
/** |
672 |
> |
* toArray contains all elements |
673 |
> |
*/ |
674 |
> |
public void testToArray() throws InterruptedException { |
675 |
> |
DelayQueue q = populatedQueue(SIZE); |
676 |
> |
Object[] o = q.toArray(); |
677 |
|
Arrays.sort(o); |
678 |
< |
try { |
679 |
< |
for(int i = 0; i < o.length; i++) |
572 |
< |
assertEquals(o[i], q.take()); |
573 |
< |
} catch (InterruptedException e){ |
574 |
< |
fail("Unexpected exception"); |
575 |
< |
} |
678 |
> |
for (int i = 0; i < o.length; i++) |
679 |
> |
assertSame(o[i], q.take()); |
680 |
|
} |
681 |
|
|
682 |
< |
public void testToArray2(){ |
683 |
< |
DelayQueue q = fullQueue(N); |
684 |
< |
PDelay[] ints = new PDelay[N]; |
685 |
< |
ints = (PDelay[])q.toArray(ints); |
682 |
> |
/** |
683 |
> |
* toArray(a) contains all elements |
684 |
> |
*/ |
685 |
> |
public void testToArray2() { |
686 |
> |
DelayQueue<PDelay> q = populatedQueue(SIZE); |
687 |
> |
PDelay[] ints = new PDelay[SIZE]; |
688 |
> |
PDelay[] array = q.toArray(ints); |
689 |
> |
assertSame(ints, array); |
690 |
|
Arrays.sort(ints); |
691 |
< |
try { |
692 |
< |
for(int i = 0; i < ints.length; i++) |
693 |
< |
assertEquals(ints[i], q.take()); |
694 |
< |
} catch (InterruptedException e){ |
695 |
< |
fail("Unexpected exception"); |
696 |
< |
} |
697 |
< |
} |
698 |
< |
|
699 |
< |
public void testIterator(){ |
700 |
< |
DelayQueue q = fullQueue(N); |
691 |
> |
for (int i = 0; i < ints.length; i++) |
692 |
> |
assertSame(ints[i], q.remove()); |
693 |
> |
} |
694 |
> |
|
695 |
> |
|
696 |
> |
/** |
697 |
> |
* toArray(null) throws NullPointerException |
698 |
> |
*/ |
699 |
> |
public void testToArray_NullArg() { |
700 |
> |
DelayQueue q = populatedQueue(SIZE); |
701 |
> |
try { |
702 |
> |
q.toArray(null); |
703 |
> |
shouldThrow(); |
704 |
> |
} catch (NullPointerException success) {} |
705 |
> |
} |
706 |
> |
|
707 |
> |
/** |
708 |
> |
* toArray(incompatible array type) throws ArrayStoreException |
709 |
> |
*/ |
710 |
> |
public void testToArray1_BadArg() { |
711 |
> |
DelayQueue q = populatedQueue(SIZE); |
712 |
> |
try { |
713 |
> |
q.toArray(new String[10]); |
714 |
> |
shouldThrow(); |
715 |
> |
} catch (ArrayStoreException success) {} |
716 |
> |
} |
717 |
> |
|
718 |
> |
/** |
719 |
> |
* iterator iterates through all elements |
720 |
> |
*/ |
721 |
> |
public void testIterator() { |
722 |
> |
DelayQueue q = populatedQueue(SIZE); |
723 |
|
int i = 0; |
724 |
< |
Iterator it = q.iterator(); |
725 |
< |
while(it.hasNext()) { |
724 |
> |
Iterator it = q.iterator(); |
725 |
> |
while (it.hasNext()) { |
726 |
|
assertTrue(q.contains(it.next())); |
727 |
|
++i; |
728 |
|
} |
729 |
< |
assertEquals(i, N); |
729 |
> |
assertEquals(i, SIZE); |
730 |
|
} |
731 |
|
|
732 |
< |
public void testIteratorRemove () { |
733 |
< |
|
732 |
> |
/** |
733 |
> |
* iterator.remove removes current element |
734 |
> |
*/ |
735 |
> |
public void testIteratorRemove() { |
736 |
|
final DelayQueue q = new DelayQueue(); |
605 |
– |
|
737 |
|
q.add(new PDelay(2)); |
738 |
|
q.add(new PDelay(1)); |
739 |
|
q.add(new PDelay(3)); |
609 |
– |
|
740 |
|
Iterator it = q.iterator(); |
741 |
|
it.next(); |
742 |
|
it.remove(); |
613 |
– |
|
743 |
|
it = q.iterator(); |
744 |
|
assertEquals(it.next(), new PDelay(2)); |
745 |
|
assertEquals(it.next(), new PDelay(3)); |
747 |
|
} |
748 |
|
|
749 |
|
|
750 |
< |
public void testToString(){ |
751 |
< |
DelayQueue q = fullQueue(N); |
750 |
> |
/** |
751 |
> |
* toString contains toStrings of elements |
752 |
> |
*/ |
753 |
> |
public void testToString() { |
754 |
> |
DelayQueue q = populatedQueue(SIZE); |
755 |
|
String s = q.toString(); |
756 |
< |
for (int i = 0; i < N; ++i) { |
757 |
< |
assertTrue(s.indexOf(String.valueOf(i)) >= 0); |
756 |
> |
for (int i = 0; i < SIZE; ++i) { |
757 |
> |
assertTrue(s.indexOf(String.valueOf(Integer.MIN_VALUE+i)) >= 0); |
758 |
|
} |
759 |
< |
} |
759 |
> |
} |
760 |
|
|
761 |
+ |
/** |
762 |
+ |
* offer transfers elements across Executor tasks |
763 |
+ |
*/ |
764 |
|
public void testPollInExecutor() { |
630 |
– |
|
765 |
|
final DelayQueue q = new DelayQueue(); |
632 |
– |
|
766 |
|
ExecutorService executor = Executors.newFixedThreadPool(2); |
767 |
+ |
executor.execute(new CheckedRunnable() { |
768 |
+ |
public void realRun() throws InterruptedException { |
769 |
+ |
assertNull(q.poll()); |
770 |
+ |
assertTrue(null != q.poll(MEDIUM_DELAY_MS, MILLISECONDS)); |
771 |
+ |
assertTrue(q.isEmpty()); |
772 |
+ |
}}); |
773 |
+ |
|
774 |
+ |
executor.execute(new CheckedRunnable() { |
775 |
+ |
public void realRun() throws InterruptedException { |
776 |
+ |
delay(SHORT_DELAY_MS); |
777 |
+ |
q.put(new PDelay(1)); |
778 |
+ |
}}); |
779 |
|
|
780 |
< |
executor.execute(new Runnable() { |
781 |
< |
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 |
< |
}); |
780 |
> |
joinPool(executor); |
781 |
> |
} |
782 |
|
|
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(); |
783 |
|
|
784 |
+ |
/** |
785 |
+ |
* Delayed actions do not occur until their delay elapses |
786 |
+ |
*/ |
787 |
+ |
public void testDelay() throws InterruptedException { |
788 |
+ |
DelayQueue<NanoDelay> q = new DelayQueue<NanoDelay>(); |
789 |
+ |
for (int i = 0; i < SIZE; ++i) |
790 |
+ |
q.add(new NanoDelay(1000000L * (SIZE - i))); |
791 |
+ |
|
792 |
+ |
long last = 0; |
793 |
+ |
for (int i = 0; i < SIZE; ++i) { |
794 |
+ |
NanoDelay e = q.take(); |
795 |
+ |
long tt = e.getTriggerTime(); |
796 |
+ |
assertTrue(System.nanoTime() - tt >= 0); |
797 |
+ |
if (i != 0) |
798 |
+ |
assertTrue(tt >= last); |
799 |
+ |
last = tt; |
800 |
+ |
} |
801 |
+ |
assertTrue(q.isEmpty()); |
802 |
|
} |
803 |
|
|
804 |
< |
static class NanoDelay implements Delayed { |
805 |
< |
long trigger; |
806 |
< |
NanoDelay(long i) { |
807 |
< |
trigger = System.nanoTime() + i; |
808 |
< |
} |
809 |
< |
public int compareTo(Object y) { |
810 |
< |
long i = trigger; |
811 |
< |
long j = ((NanoDelay)y).trigger; |
672 |
< |
if (i < j) return -1; |
673 |
< |
if (i > j) return 1; |
674 |
< |
return 0; |
675 |
< |
} |
804 |
> |
/** |
805 |
> |
* peek of a non-empty queue returns non-null even if not expired |
806 |
> |
*/ |
807 |
> |
public void testPeekDelayed() { |
808 |
> |
DelayQueue q = new DelayQueue(); |
809 |
> |
q.add(new NanoDelay(Long.MAX_VALUE)); |
810 |
> |
assertNotNull(q.peek()); |
811 |
> |
} |
812 |
|
|
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 |
– |
} |
813 |
|
|
814 |
< |
public boolean equals(Object other) { |
815 |
< |
return ((NanoDelay)other).trigger == trigger; |
816 |
< |
} |
817 |
< |
public boolean equals(NanoDelay other) { |
818 |
< |
return ((NanoDelay)other).trigger == trigger; |
819 |
< |
} |
814 |
> |
/** |
815 |
> |
* poll of a non-empty queue returns null if no expired elements. |
816 |
> |
*/ |
817 |
> |
public void testPollDelayed() { |
818 |
> |
DelayQueue q = new DelayQueue(); |
819 |
> |
q.add(new NanoDelay(Long.MAX_VALUE)); |
820 |
> |
assertNull(q.poll()); |
821 |
> |
} |
822 |
|
|
823 |
< |
public long getDelay(TimeUnit unit) { |
824 |
< |
long n = trigger - System.nanoTime(); |
825 |
< |
return unit.convert(n, TimeUnit.NANOSECONDS); |
826 |
< |
} |
823 |
> |
/** |
824 |
> |
* timed poll of a non-empty queue returns null if no expired elements. |
825 |
> |
*/ |
826 |
> |
public void testTimedPollDelayed() throws InterruptedException { |
827 |
> |
DelayQueue q = new DelayQueue(); |
828 |
> |
q.add(new NanoDelay(LONG_DELAY_MS * 1000000L)); |
829 |
> |
assertNull(q.poll(SHORT_DELAY_MS, MILLISECONDS)); |
830 |
> |
} |
831 |
|
|
832 |
< |
public long getTriggerTime() { |
833 |
< |
return trigger; |
834 |
< |
} |
832 |
> |
/** |
833 |
> |
* drainTo(null) throws NPE |
834 |
> |
*/ |
835 |
> |
public void testDrainToNull() { |
836 |
> |
DelayQueue q = populatedQueue(SIZE); |
837 |
> |
try { |
838 |
> |
q.drainTo(null); |
839 |
> |
shouldThrow(); |
840 |
> |
} catch (NullPointerException success) {} |
841 |
> |
} |
842 |
|
|
843 |
< |
public String toString() { |
844 |
< |
return String.valueOf(trigger); |
845 |
< |
} |
843 |
> |
/** |
844 |
> |
* drainTo(this) throws IAE |
845 |
> |
*/ |
846 |
> |
public void testDrainToSelf() { |
847 |
> |
DelayQueue q = populatedQueue(SIZE); |
848 |
> |
try { |
849 |
> |
q.drainTo(q); |
850 |
> |
shouldThrow(); |
851 |
> |
} catch (IllegalArgumentException success) {} |
852 |
|
} |
853 |
|
|
854 |
< |
public void testDelay() { |
854 |
> |
/** |
855 |
> |
* drainTo(c) empties queue into another collection c |
856 |
> |
*/ |
857 |
> |
public void testDrainTo() { |
858 |
|
DelayQueue q = new DelayQueue(); |
859 |
< |
NanoDelay[] elements = new NanoDelay[N]; |
860 |
< |
for (int i = 0; i < N; ++i) { |
861 |
< |
elements[i] = new NanoDelay(1000000000L + 1000000L * (N - i)); |
862 |
< |
} |
863 |
< |
for (int i = 0; i < N; ++i) { |
864 |
< |
q.add(elements[i]); |
865 |
< |
} |
859 |
> |
PDelay[] elems = new PDelay[SIZE]; |
860 |
> |
for (int i = 0; i < SIZE; ++i) { |
861 |
> |
elems[i] = new PDelay(i); |
862 |
> |
q.add(elems[i]); |
863 |
> |
} |
864 |
> |
ArrayList l = new ArrayList(); |
865 |
> |
q.drainTo(l); |
866 |
> |
assertEquals(q.size(), 0); |
867 |
> |
for (int i = 0; i < SIZE; ++i) |
868 |
> |
assertEquals(l.get(i), elems[i]); |
869 |
> |
q.add(elems[0]); |
870 |
> |
q.add(elems[1]); |
871 |
> |
assertFalse(q.isEmpty()); |
872 |
> |
assertTrue(q.contains(elems[0])); |
873 |
> |
assertTrue(q.contains(elems[1])); |
874 |
> |
l.clear(); |
875 |
> |
q.drainTo(l); |
876 |
> |
assertEquals(q.size(), 0); |
877 |
> |
assertEquals(l.size(), 2); |
878 |
> |
for (int i = 0; i < 2; ++i) |
879 |
> |
assertEquals(l.get(i), elems[i]); |
880 |
> |
} |
881 |
|
|
882 |
+ |
/** |
883 |
+ |
* drainTo empties queue |
884 |
+ |
*/ |
885 |
+ |
public void testDrainToWithActivePut() throws InterruptedException { |
886 |
+ |
final DelayQueue q = populatedQueue(SIZE); |
887 |
+ |
Thread t = new Thread(new CheckedRunnable() { |
888 |
+ |
public void realRun() { |
889 |
+ |
q.put(new PDelay(SIZE+1)); |
890 |
+ |
}}); |
891 |
+ |
|
892 |
+ |
t.start(); |
893 |
+ |
ArrayList l = new ArrayList(); |
894 |
+ |
q.drainTo(l); |
895 |
+ |
assertTrue(l.size() >= SIZE); |
896 |
+ |
t.join(); |
897 |
+ |
assertTrue(q.size() + l.size() >= SIZE); |
898 |
+ |
} |
899 |
+ |
|
900 |
+ |
/** |
901 |
+ |
* drainTo(null, n) throws NPE |
902 |
+ |
*/ |
903 |
+ |
public void testDrainToNullN() { |
904 |
+ |
DelayQueue q = populatedQueue(SIZE); |
905 |
|
try { |
906 |
< |
long last = 0; |
907 |
< |
for (int i = 0; i < N; ++i) { |
908 |
< |
NanoDelay e = (NanoDelay)(q.take()); |
909 |
< |
long tt = e.getTriggerTime(); |
910 |
< |
assertTrue(tt <= System.nanoTime()); |
911 |
< |
if (i != 0) |
912 |
< |
assertTrue(tt >= last); |
913 |
< |
last = tt; |
914 |
< |
} |
915 |
< |
} |
916 |
< |
catch(InterruptedException ie) { |
917 |
< |
fail("Unexpected Exception"); |
906 |
> |
q.drainTo(null, 0); |
907 |
> |
shouldThrow(); |
908 |
> |
} catch (NullPointerException success) {} |
909 |
> |
} |
910 |
> |
|
911 |
> |
/** |
912 |
> |
* drainTo(this, n) throws IAE |
913 |
> |
*/ |
914 |
> |
public void testDrainToSelfN() { |
915 |
> |
DelayQueue q = populatedQueue(SIZE); |
916 |
> |
try { |
917 |
> |
q.drainTo(q, 0); |
918 |
> |
shouldThrow(); |
919 |
> |
} catch (IllegalArgumentException success) {} |
920 |
> |
} |
921 |
> |
|
922 |
> |
/** |
923 |
> |
* drainTo(c, n) empties first min(n, size) elements of queue into c |
924 |
> |
*/ |
925 |
> |
public void testDrainToN() { |
926 |
> |
for (int i = 0; i < SIZE + 2; ++i) { |
927 |
> |
DelayQueue q = populatedQueue(SIZE); |
928 |
> |
ArrayList l = new ArrayList(); |
929 |
> |
q.drainTo(l, i); |
930 |
> |
int k = (i < SIZE) ? i : SIZE; |
931 |
> |
assertEquals(q.size(), SIZE-k); |
932 |
> |
assertEquals(l.size(), k); |
933 |
|
} |
934 |
|
} |
935 |
|
|
936 |
+ |
|
937 |
|
} |