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* http://creativecommons.org/publicdomain/zero/1.0/ |
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*/ |
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|
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< |
import static java.util.concurrent.TimeUnit.MILLISECONDS; |
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import static java.util.concurrent.TimeUnit.SECONDS; |
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|
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> |
import java.util.concurrent.CompletableFuture; |
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import java.util.concurrent.Executor; |
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import java.util.concurrent.Executors; |
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import java.util.concurrent.Flow; |
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import static java.util.concurrent.Flow.Publisher; |
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import static java.util.concurrent.Flow.Subscriber; |
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import static java.util.concurrent.Flow.Subscription; |
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import java.util.concurrent.LinkedBlockingQueue; |
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import java.util.concurrent.ForkJoinPool; |
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import java.util.concurrent.LinkedBlockingQueue; |
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import java.util.concurrent.SubmissionPublisher; |
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import java.util.concurrent.ThreadFactory; |
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import java.util.concurrent.ThreadPoolExecutor; |
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import java.util.concurrent.TimeUnit; |
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import java.util.concurrent.atomic.AtomicInteger; |
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import java.util.function.BiConsumer; |
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import java.util.function.BiPredicate; |
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import java.util.function.BiFunction; |
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|
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import java.util.function.BiPredicate; |
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import java.util.stream.Stream; |
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import junit.framework.Test; |
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import junit.framework.TestSuite; |
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|
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import static java.util.concurrent.Flow.Publisher; |
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import static java.util.concurrent.Flow.Subscriber; |
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import static java.util.concurrent.Flow.Subscription; |
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import static java.util.concurrent.TimeUnit.MILLISECONDS; |
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import static java.util.concurrent.TimeUnit.SECONDS; |
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|
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public class SubmissionPublisherTest extends JSR166TestCase { |
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public static void main(String[] args) { |
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return new TestSuite(SubmissionPublisherTest.class); |
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} |
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|
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// Factory for single thread pool in case commonPool parallelism is zero |
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static final class DaemonThreadFactory implements ThreadFactory { |
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< |
public Thread newThread(Runnable r) { |
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< |
Thread t = new Thread(r); |
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< |
t.setDaemon(true); |
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< |
return t; |
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< |
} |
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< |
} |
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< |
|
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< |
static final Executor basicExecutor = |
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< |
(ForkJoinPool.getCommonPoolParallelism() > 1) ? |
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ForkJoinPool.commonPool() : |
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< |
new ThreadPoolExecutor(1, 1, 60, SECONDS, |
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< |
new LinkedBlockingQueue<Runnable>(), |
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< |
new DaemonThreadFactory()); |
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< |
|
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> |
final Executor basicExecutor = basicPublisher().getExecutor(); |
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> |
|
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static SubmissionPublisher<Integer> basicPublisher() { |
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< |
return new SubmissionPublisher<Integer>(basicExecutor, |
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Flow.defaultBufferSize()); |
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> |
return new SubmissionPublisher<Integer>(); |
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} |
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|
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static class SPException extends RuntimeException {} |
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/** |
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* A default-constructed SubmissionPublisher has no subscribers, |
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* is not closed, has default buffer size, and uses the |
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* ForkJoinPool.commonPool executor |
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> |
* defaultExecutor |
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*/ |
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public void testConstructor1() { |
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SubmissionPublisher<Integer> p = new SubmissionPublisher<Integer>(); |
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checkInitialState(p); |
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assertSame(p.getExecutor(), ForkJoinPool.commonPool()); |
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assertEquals(p.getMaxBufferCapacity(), Flow.defaultBufferSize()); |
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+ |
Executor e = p.getExecutor(), c = ForkJoinPool.commonPool(); |
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if (ForkJoinPool.getCommonPoolParallelism() > 1) |
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assertSame(e, c); |
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else |
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assertNotSame(e, c); |
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} |
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|
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/** |
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assertTrue(calls.get() >= 2); |
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} |
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|
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+ |
/** |
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* consume returns a CompletableFuture that is done when |
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* publisher completes |
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*/ |
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+ |
public void testConsume() { |
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AtomicInteger sum = new AtomicInteger(); |
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SubmissionPublisher<Integer> p = basicPublisher(); |
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CompletableFuture<Void> f = |
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p.consume((Integer x) -> { sum.getAndAdd(x.intValue()); }); |
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int n = 20; |
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for (int i = 1; i <= n; ++i) |
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p.submit(i); |
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p.close(); |
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f.join(); |
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+ |
assertEquals((n * (n + 1)) / 2, sum.get()); |
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} |
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|
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+ |
/** |
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* consume(null) throws NPE |
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*/ |
| 961 |
+ |
public void testConsumeNPE() { |
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+ |
SubmissionPublisher<Integer> p = basicPublisher(); |
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+ |
try { |
| 964 |
+ |
CompletableFuture<Void> f = p.consume(null); |
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shouldThrow(); |
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+ |
} catch (NullPointerException success) {} |
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} |
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+ |
|
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+ |
/** |
| 970 |
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* consume eventually stops processing published items if cancelled |
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+ |
*/ |
| 972 |
+ |
public void testCancelledConsume() { |
| 973 |
+ |
AtomicInteger count = new AtomicInteger(); |
| 974 |
+ |
SubmissionPublisher<Integer> p = basicPublisher(); |
| 975 |
+ |
CompletableFuture<Void> f = p.consume(x -> count.getAndIncrement()); |
| 976 |
+ |
f.cancel(true); |
| 977 |
+ |
int n = 1000000; // arbitrary limit |
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+ |
for (int i = 1; i <= n; ++i) |
| 979 |
+ |
p.submit(i); |
| 980 |
+ |
assertTrue(count.get() < n); |
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+ |
} |
| 982 |
+ |
|
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} |
