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dl |
1.1 |
/* |
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* Written by Doug Lea and Martin Buchholz with assistance from |
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* members of JCP JSR-166 Expert Group and released to the public |
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* domain, as explained at |
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* http://creativecommons.org/publicdomain/zero/1.0/ |
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*/ |
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dl |
1.10 |
import java.util.concurrent.CompletableFuture; |
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dl |
1.1 |
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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dl |
1.10 |
import java.util.concurrent.ForkJoinPool; |
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dl |
1.1 |
import java.util.concurrent.SubmissionPublisher; |
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import java.util.concurrent.atomic.AtomicInteger; |
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import junit.framework.Test; |
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import junit.framework.TestSuite; |
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dl |
1.10 |
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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dl |
1.1 |
public class SubmissionPublisherTest extends JSR166TestCase { |
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public static void main(String[] args) { |
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main(suite(), args); |
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} |
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public static Test suite() { |
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return new TestSuite(SubmissionPublisherTest.class); |
29 |
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} |
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31 |
dl |
1.12 |
final Executor basicExecutor = basicPublisher().getExecutor(); |
32 |
jsr166 |
1.13 |
|
33 |
dl |
1.1 |
static SubmissionPublisher<Integer> basicPublisher() { |
34 |
dl |
1.12 |
return new SubmissionPublisher<Integer>(); |
35 |
dl |
1.1 |
} |
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jsr166 |
1.2 |
|
37 |
dl |
1.1 |
static class SPException extends RuntimeException {} |
38 |
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39 |
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class TestSubscriber implements Subscriber<Integer> { |
40 |
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volatile Subscription sn; |
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int last; // Requires that onNexts are in numeric order |
42 |
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volatile int nexts; |
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volatile int errors; |
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volatile int completes; |
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volatile boolean throwOnCall = false; |
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volatile boolean request = true; |
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volatile Throwable lastError; |
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49 |
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public synchronized void onSubscribe(Subscription s) { |
50 |
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threadAssertTrue(sn == null); |
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sn = s; |
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notifyAll(); |
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if (throwOnCall) |
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throw new SPException(); |
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if (request) |
56 |
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sn.request(1L); |
57 |
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} |
58 |
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public synchronized void onNext(Integer t) { |
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++nexts; |
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notifyAll(); |
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int current = t.intValue(); |
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threadAssertTrue(current >= last); |
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last = current; |
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if (request) |
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sn.request(1L); |
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if (throwOnCall) |
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throw new SPException(); |
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} |
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public synchronized void onError(Throwable t) { |
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threadAssertTrue(completes == 0); |
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threadAssertTrue(errors == 0); |
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lastError = t; |
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++errors; |
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notifyAll(); |
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} |
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public synchronized void onComplete() { |
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threadAssertTrue(completes == 0); |
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++completes; |
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notifyAll(); |
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} |
81 |
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82 |
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synchronized void awaitSubscribe() { |
83 |
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while (sn == null) { |
84 |
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try { |
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wait(); |
86 |
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} catch (Exception ex) { |
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threadUnexpectedException(ex); |
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break; |
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} |
90 |
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} |
91 |
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} |
92 |
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synchronized void awaitNext(int n) { |
93 |
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while (nexts < n) { |
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try { |
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wait(); |
96 |
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} catch (Exception ex) { |
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threadUnexpectedException(ex); |
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break; |
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} |
100 |
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} |
101 |
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} |
102 |
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synchronized void awaitComplete() { |
103 |
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while (completes == 0 && errors == 0) { |
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try { |
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wait(); |
106 |
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} catch (Exception ex) { |
107 |
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threadUnexpectedException(ex); |
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break; |
109 |
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} |
110 |
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} |
111 |
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} |
112 |
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synchronized void awaitError() { |
113 |
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while (errors == 0) { |
114 |
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try { |
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wait(); |
116 |
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} catch (Exception ex) { |
117 |
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threadUnexpectedException(ex); |
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break; |
119 |
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} |
120 |
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} |
121 |
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} |
122 |
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123 |
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} |
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125 |
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/** |
126 |
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* A new SubmissionPublisher has no subscribers, a non-null |
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* executor, a power-of-two capacity, is not closed, and reports |
128 |
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* zero demand and lag |
129 |
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*/ |
130 |
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void checkInitialState(SubmissionPublisher<?> p) { |
131 |
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assertFalse(p.hasSubscribers()); |
132 |
jsr166 |
1.6 |
assertEquals(0, p.getNumberOfSubscribers()); |
133 |
dl |
1.1 |
assertTrue(p.getSubscribers().isEmpty()); |
134 |
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assertFalse(p.isClosed()); |
135 |
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assertNull(p.getClosedException()); |
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int n = p.getMaxBufferCapacity(); |
137 |
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assertTrue((n & (n - 1)) == 0); // power of two |
138 |
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assertNotNull(p.getExecutor()); |
139 |
jsr166 |
1.6 |
assertEquals(0, p.estimateMinimumDemand()); |
140 |
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assertEquals(0, p.estimateMaximumLag()); |
141 |
dl |
1.1 |
} |
142 |
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143 |
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/** |
144 |
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* A default-constructed SubmissionPublisher has no subscribers, |
145 |
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* is not closed, has default buffer size, and uses the |
146 |
dl |
1.12 |
* defaultExecutor |
147 |
dl |
1.1 |
*/ |
148 |
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public void testConstructor1() { |
149 |
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SubmissionPublisher<Integer> p = new SubmissionPublisher<Integer>(); |
150 |
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checkInitialState(p); |
151 |
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assertEquals(p.getMaxBufferCapacity(), Flow.defaultBufferSize()); |
152 |
dl |
1.12 |
Executor e = p.getExecutor(), c = ForkJoinPool.commonPool(); |
153 |
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if (ForkJoinPool.getCommonPoolParallelism() > 1) |
154 |
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assertSame(e, c); |
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else |
156 |
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assertNotSame(e, c); |
157 |
dl |
1.1 |
} |
158 |
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159 |
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/** |
160 |
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* A new SubmissionPublisher has no subscribers, is not closed, |
161 |
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* has the given buffer size, and uses the given executor |
162 |
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*/ |
163 |
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public void testConstructor2() { |
164 |
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Executor e = Executors.newFixedThreadPool(1); |
165 |
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SubmissionPublisher<Integer> p = new SubmissionPublisher<Integer>(e, 8); |
166 |
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checkInitialState(p); |
167 |
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assertSame(p.getExecutor(), e); |
168 |
jsr166 |
1.6 |
assertEquals(8, p.getMaxBufferCapacity()); |
169 |
dl |
1.1 |
} |
170 |
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/** |
172 |
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* A null Executor argument to SubmissionPublisher constructor throws NPE |
173 |
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*/ |
174 |
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public void testConstructor3() { |
175 |
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try { |
176 |
jsr166 |
1.2 |
new SubmissionPublisher<Integer>(null, 8); |
177 |
dl |
1.1 |
shouldThrow(); |
178 |
jsr166 |
1.2 |
} catch (NullPointerException success) {} |
179 |
dl |
1.1 |
} |
180 |
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181 |
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/** |
182 |
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* A negative capacity argument to SubmissionPublisher constructor |
183 |
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* throws IAE |
184 |
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*/ |
185 |
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public void testConstructor4() { |
186 |
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Executor e = Executors.newFixedThreadPool(1); |
187 |
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try { |
188 |
jsr166 |
1.2 |
new SubmissionPublisher<Integer>(e, -1); |
189 |
dl |
1.1 |
shouldThrow(); |
190 |
jsr166 |
1.2 |
} catch (IllegalArgumentException success) {} |
191 |
dl |
1.1 |
} |
192 |
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193 |
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/** |
194 |
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* A closed publisher reports isClosed with no closedException and |
195 |
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* throws ISE upon attempted submission; a subsequent close or |
196 |
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* closeExceptionally has no additional effect. |
197 |
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*/ |
198 |
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public void testClose() { |
199 |
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SubmissionPublisher<Integer> p = basicPublisher(); |
200 |
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checkInitialState(p); |
201 |
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p.close(); |
202 |
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assertTrue(p.isClosed()); |
203 |
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assertNull(p.getClosedException()); |
204 |
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try { |
205 |
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p.submit(1); |
206 |
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shouldThrow(); |
207 |
jsr166 |
1.2 |
} catch (IllegalStateException success) {} |
208 |
dl |
1.1 |
Throwable ex = new SPException(); |
209 |
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p.closeExceptionally(ex); |
210 |
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assertTrue(p.isClosed()); |
211 |
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assertNull(p.getClosedException()); |
212 |
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} |
213 |
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214 |
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/** |
215 |
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* A publisher closedExceptionally reports isClosed with the |
216 |
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* closedException and throws ISE upon attempted submission; a |
217 |
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* subsequent close or closeExceptionally has no additional |
218 |
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* effect. |
219 |
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*/ |
220 |
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public void testCloseExceptionally() { |
221 |
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SubmissionPublisher<Integer> p = basicPublisher(); |
222 |
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checkInitialState(p); |
223 |
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Throwable ex = new SPException(); |
224 |
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p.closeExceptionally(ex); |
225 |
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assertTrue(p.isClosed()); |
226 |
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assertSame(p.getClosedException(), ex); |
227 |
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try { |
228 |
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p.submit(1); |
229 |
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shouldThrow(); |
230 |
jsr166 |
1.2 |
} catch (IllegalStateException success) {} |
231 |
dl |
1.1 |
p.close(); |
232 |
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assertTrue(p.isClosed()); |
233 |
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assertSame(p.getClosedException(), ex); |
234 |
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} |
235 |
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236 |
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/** |
237 |
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* Upon subscription, the subscriber's onSubscribe is called, no |
238 |
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* other Subscriber methods are invoked, the publisher |
239 |
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* hasSubscribers, isSubscribed is true, and existing |
240 |
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* subscriptions are unaffected. |
241 |
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*/ |
242 |
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public void testSubscribe1() { |
243 |
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TestSubscriber s = new TestSubscriber(); |
244 |
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SubmissionPublisher<Integer> p = basicPublisher(); |
245 |
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p.subscribe(s); |
246 |
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assertTrue(p.hasSubscribers()); |
247 |
jsr166 |
1.6 |
assertEquals(1, p.getNumberOfSubscribers()); |
248 |
dl |
1.1 |
assertTrue(p.getSubscribers().contains(s)); |
249 |
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assertTrue(p.isSubscribed(s)); |
250 |
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s.awaitSubscribe(); |
251 |
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assertNotNull(s.sn); |
252 |
jsr166 |
1.6 |
assertEquals(0, s.nexts); |
253 |
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assertEquals(0, s.errors); |
254 |
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assertEquals(0, s.completes); |
255 |
dl |
1.1 |
TestSubscriber s2 = new TestSubscriber(); |
256 |
|
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p.subscribe(s2); |
257 |
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assertTrue(p.hasSubscribers()); |
258 |
jsr166 |
1.6 |
assertEquals(2, p.getNumberOfSubscribers()); |
259 |
dl |
1.1 |
assertTrue(p.getSubscribers().contains(s)); |
260 |
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assertTrue(p.getSubscribers().contains(s2)); |
261 |
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assertTrue(p.isSubscribed(s)); |
262 |
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assertTrue(p.isSubscribed(s2)); |
263 |
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s2.awaitSubscribe(); |
264 |
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assertNotNull(s2.sn); |
265 |
jsr166 |
1.6 |
assertEquals(0, s2.nexts); |
266 |
|
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assertEquals(0, s2.errors); |
267 |
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assertEquals(0, s2.completes); |
268 |
dl |
1.9 |
p.close(); |
269 |
dl |
1.1 |
} |
270 |
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|
271 |
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/** |
272 |
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* If closed, upon subscription, the subscriber's onComplete |
273 |
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* method is invoked |
274 |
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*/ |
275 |
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public void testSubscribe2() { |
276 |
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TestSubscriber s = new TestSubscriber(); |
277 |
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SubmissionPublisher<Integer> p = basicPublisher(); |
278 |
|
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p.close(); |
279 |
|
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p.subscribe(s); |
280 |
|
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s.awaitComplete(); |
281 |
jsr166 |
1.6 |
assertEquals(0, s.nexts); |
282 |
|
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assertEquals(0, s.errors); |
283 |
|
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assertEquals(1, s.completes, 1); |
284 |
dl |
1.1 |
} |
285 |
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|
286 |
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/** |
287 |
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* If closedExceptionally, upon subscription, the subscriber's |
288 |
|
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* onError method is invoked |
289 |
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*/ |
290 |
|
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public void testSubscribe3() { |
291 |
|
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TestSubscriber s = new TestSubscriber(); |
292 |
|
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SubmissionPublisher<Integer> p = basicPublisher(); |
293 |
|
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Throwable ex = new SPException(); |
294 |
|
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p.closeExceptionally(ex); |
295 |
|
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assertTrue(p.isClosed()); |
296 |
|
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assertSame(p.getClosedException(), ex); |
297 |
|
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p.subscribe(s); |
298 |
|
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s.awaitError(); |
299 |
jsr166 |
1.6 |
assertEquals(0, s.nexts); |
300 |
|
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assertEquals(1, s.errors); |
301 |
dl |
1.1 |
} |
302 |
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303 |
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/** |
304 |
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* Upon attempted resubscription, the subscriber's onError is |
305 |
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* called and the subscription is cancelled. |
306 |
|
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*/ |
307 |
|
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public void testSubscribe4() { |
308 |
|
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TestSubscriber s = new TestSubscriber(); |
309 |
|
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SubmissionPublisher<Integer> p = basicPublisher(); |
310 |
|
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p.subscribe(s); |
311 |
|
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assertTrue(p.hasSubscribers()); |
312 |
jsr166 |
1.6 |
assertEquals(1, p.getNumberOfSubscribers()); |
313 |
dl |
1.1 |
assertTrue(p.getSubscribers().contains(s)); |
314 |
|
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assertTrue(p.isSubscribed(s)); |
315 |
|
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s.awaitSubscribe(); |
316 |
|
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assertNotNull(s.sn); |
317 |
jsr166 |
1.6 |
assertEquals(0, s.nexts); |
318 |
|
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assertEquals(0, s.errors); |
319 |
|
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assertEquals(0, s.completes); |
320 |
dl |
1.1 |
p.subscribe(s); |
321 |
|
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s.awaitError(); |
322 |
jsr166 |
1.6 |
assertEquals(0, s.nexts); |
323 |
|
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assertEquals(1, s.errors); |
324 |
dl |
1.1 |
assertFalse(p.isSubscribed(s)); |
325 |
|
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} |
326 |
|
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|
327 |
|
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/** |
328 |
|
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* An exception thrown in onSubscribe causes onError |
329 |
|
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*/ |
330 |
|
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public void testSubscribe5() { |
331 |
|
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TestSubscriber s = new TestSubscriber(); |
332 |
|
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SubmissionPublisher<Integer> p = basicPublisher(); |
333 |
|
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s.throwOnCall = true; |
334 |
|
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try { |
335 |
|
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p.subscribe(s); |
336 |
jsr166 |
1.2 |
} catch (Exception ok) {} |
337 |
dl |
1.1 |
s.awaitError(); |
338 |
jsr166 |
1.6 |
assertEquals(0, s.nexts); |
339 |
|
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assertEquals(1, s.errors); |
340 |
|
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assertEquals(0, s.completes); |
341 |
dl |
1.1 |
} |
342 |
|
|
|
343 |
|
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/** |
344 |
jsr166 |
1.8 |
* subscribe(null) throws NPE |
345 |
dl |
1.1 |
*/ |
346 |
|
|
public void testSubscribe6() { |
347 |
|
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SubmissionPublisher<Integer> p = basicPublisher(); |
348 |
|
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try { |
349 |
|
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p.subscribe(null); |
350 |
jsr166 |
1.2 |
shouldThrow(); |
351 |
|
|
} catch (NullPointerException success) {} |
352 |
dl |
1.1 |
checkInitialState(p); |
353 |
|
|
} |
354 |
|
|
|
355 |
|
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/** |
356 |
|
|
* Closing a publisher causes onComplete to subscribers |
357 |
|
|
*/ |
358 |
|
|
public void testCloseCompletes() { |
359 |
|
|
SubmissionPublisher<Integer> p = basicPublisher(); |
360 |
|
|
TestSubscriber s1 = new TestSubscriber(); |
361 |
|
|
TestSubscriber s2 = new TestSubscriber(); |
362 |
|
|
p.subscribe(s1); |
363 |
|
|
p.subscribe(s2); |
364 |
|
|
p.submit(1); |
365 |
|
|
p.close(); |
366 |
|
|
assertTrue(p.isClosed()); |
367 |
|
|
assertNull(p.getClosedException()); |
368 |
|
|
s1.awaitComplete(); |
369 |
jsr166 |
1.6 |
assertEquals(1, s1.nexts); |
370 |
|
|
assertEquals(1, s1.completes); |
371 |
dl |
1.1 |
s2.awaitComplete(); |
372 |
jsr166 |
1.6 |
assertEquals(1, s2.nexts); |
373 |
|
|
assertEquals(1, s2.completes); |
374 |
dl |
1.1 |
} |
375 |
|
|
|
376 |
|
|
/** |
377 |
|
|
* Closing a publisher exceptionally causes onError to subscribers |
378 |
dl |
1.16 |
* after they are subscribed |
379 |
dl |
1.1 |
*/ |
380 |
|
|
public void testCloseExceptionallyError() { |
381 |
|
|
SubmissionPublisher<Integer> p = basicPublisher(); |
382 |
|
|
TestSubscriber s1 = new TestSubscriber(); |
383 |
|
|
TestSubscriber s2 = new TestSubscriber(); |
384 |
|
|
p.subscribe(s1); |
385 |
|
|
p.subscribe(s2); |
386 |
|
|
p.submit(1); |
387 |
|
|
p.closeExceptionally(new SPException()); |
388 |
|
|
assertTrue(p.isClosed()); |
389 |
dl |
1.16 |
s1.awaitSubscribe(); |
390 |
dl |
1.1 |
s1.awaitError(); |
391 |
|
|
assertTrue(s1.nexts <= 1); |
392 |
jsr166 |
1.6 |
assertEquals(1, s1.errors); |
393 |
dl |
1.16 |
s1.awaitSubscribe(); |
394 |
dl |
1.1 |
s2.awaitError(); |
395 |
|
|
assertTrue(s2.nexts <= 1); |
396 |
jsr166 |
1.6 |
assertEquals(1, s2.errors); |
397 |
dl |
1.1 |
} |
398 |
|
|
|
399 |
|
|
/** |
400 |
|
|
* Cancelling a subscription eventually causes no more onNexts to be issued |
401 |
|
|
*/ |
402 |
|
|
public void testCancel() { |
403 |
|
|
SubmissionPublisher<Integer> p = basicPublisher(); |
404 |
|
|
TestSubscriber s1 = new TestSubscriber(); |
405 |
|
|
TestSubscriber s2 = new TestSubscriber(); |
406 |
|
|
p.subscribe(s1); |
407 |
|
|
p.subscribe(s2); |
408 |
|
|
s1.awaitSubscribe(); |
409 |
|
|
p.submit(1); |
410 |
|
|
s1.sn.cancel(); |
411 |
|
|
for (int i = 2; i <= 20; ++i) |
412 |
|
|
p.submit(i); |
413 |
|
|
p.close(); |
414 |
|
|
s2.awaitComplete(); |
415 |
jsr166 |
1.6 |
assertEquals(20, s2.nexts); |
416 |
|
|
assertEquals(1, s2.completes); |
417 |
dl |
1.1 |
assertTrue(s1.nexts < 20); |
418 |
|
|
assertFalse(p.isSubscribed(s1)); |
419 |
|
|
} |
420 |
|
|
|
421 |
|
|
/** |
422 |
|
|
* Throwing an exception in onNext causes onError |
423 |
|
|
*/ |
424 |
|
|
public void testThrowOnNext() { |
425 |
|
|
SubmissionPublisher<Integer> p = basicPublisher(); |
426 |
|
|
TestSubscriber s1 = new TestSubscriber(); |
427 |
|
|
TestSubscriber s2 = new TestSubscriber(); |
428 |
|
|
p.subscribe(s1); |
429 |
|
|
p.subscribe(s2); |
430 |
|
|
s1.awaitSubscribe(); |
431 |
|
|
p.submit(1); |
432 |
|
|
s1.throwOnCall = true; |
433 |
|
|
p.submit(2); |
434 |
|
|
p.close(); |
435 |
|
|
s2.awaitComplete(); |
436 |
jsr166 |
1.6 |
assertEquals(2, s2.nexts); |
437 |
dl |
1.1 |
s1.awaitComplete(); |
438 |
jsr166 |
1.6 |
assertEquals(1, s1.errors); |
439 |
dl |
1.1 |
} |
440 |
|
|
|
441 |
|
|
/** |
442 |
jsr166 |
1.8 |
* If a handler is supplied in constructor, it is invoked when |
443 |
dl |
1.1 |
* subscriber throws an exception in onNext |
444 |
|
|
*/ |
445 |
|
|
public void testThrowOnNextHandler() { |
446 |
|
|
AtomicInteger calls = new AtomicInteger(); |
447 |
|
|
SubmissionPublisher<Integer> p = new SubmissionPublisher<Integer> |
448 |
|
|
(basicExecutor, 8, |
449 |
|
|
(s, e) -> calls.getAndIncrement()); |
450 |
|
|
TestSubscriber s1 = new TestSubscriber(); |
451 |
|
|
TestSubscriber s2 = new TestSubscriber(); |
452 |
|
|
p.subscribe(s1); |
453 |
|
|
p.subscribe(s2); |
454 |
|
|
s1.awaitSubscribe(); |
455 |
|
|
p.submit(1); |
456 |
|
|
s1.throwOnCall = true; |
457 |
|
|
p.submit(2); |
458 |
|
|
p.close(); |
459 |
|
|
s2.awaitComplete(); |
460 |
jsr166 |
1.6 |
assertEquals(2, s2.nexts); |
461 |
|
|
assertEquals(1, s2.completes); |
462 |
dl |
1.1 |
s1.awaitError(); |
463 |
jsr166 |
1.6 |
assertEquals(1, s1.errors); |
464 |
|
|
assertEquals(1, calls.get()); |
465 |
dl |
1.1 |
} |
466 |
|
|
|
467 |
|
|
/** |
468 |
|
|
* onNext items are issued in the same order to each subscriber |
469 |
|
|
*/ |
470 |
|
|
public void testOrder() { |
471 |
|
|
SubmissionPublisher<Integer> p = basicPublisher(); |
472 |
|
|
TestSubscriber s1 = new TestSubscriber(); |
473 |
|
|
TestSubscriber s2 = new TestSubscriber(); |
474 |
|
|
p.subscribe(s1); |
475 |
|
|
p.subscribe(s2); |
476 |
|
|
for (int i = 1; i <= 20; ++i) |
477 |
|
|
p.submit(i); |
478 |
|
|
p.close(); |
479 |
|
|
s2.awaitComplete(); |
480 |
|
|
s1.awaitComplete(); |
481 |
jsr166 |
1.6 |
assertEquals(20, s2.nexts); |
482 |
|
|
assertEquals(1, s2.completes); |
483 |
|
|
assertEquals(20, s1.nexts); |
484 |
|
|
assertEquals(1, s1.completes); |
485 |
dl |
1.1 |
} |
486 |
|
|
|
487 |
|
|
/** |
488 |
|
|
* onNext is issued only if requested |
489 |
|
|
*/ |
490 |
|
|
public void testRequest1() { |
491 |
|
|
SubmissionPublisher<Integer> p = basicPublisher(); |
492 |
|
|
TestSubscriber s1 = new TestSubscriber(); |
493 |
|
|
s1.request = false; |
494 |
|
|
p.subscribe(s1); |
495 |
|
|
s1.awaitSubscribe(); |
496 |
|
|
assertTrue(p.estimateMinimumDemand() == 0); |
497 |
|
|
TestSubscriber s2 = new TestSubscriber(); |
498 |
|
|
p.subscribe(s2); |
499 |
|
|
p.submit(1); |
500 |
|
|
p.submit(2); |
501 |
|
|
s2.awaitNext(1); |
502 |
jsr166 |
1.6 |
assertEquals(0, s1.nexts); |
503 |
dl |
1.1 |
s1.sn.request(3); |
504 |
|
|
p.submit(3); |
505 |
|
|
p.close(); |
506 |
|
|
s2.awaitComplete(); |
507 |
jsr166 |
1.6 |
assertEquals(3, s2.nexts); |
508 |
|
|
assertEquals(1, s2.completes); |
509 |
dl |
1.1 |
s1.awaitComplete(); |
510 |
|
|
assertTrue(s1.nexts > 0); |
511 |
jsr166 |
1.6 |
assertEquals(1, s1.completes); |
512 |
dl |
1.1 |
} |
513 |
|
|
|
514 |
|
|
/** |
515 |
|
|
* onNext is not issued when requests become zero |
516 |
|
|
*/ |
517 |
|
|
public void testRequest2() { |
518 |
|
|
SubmissionPublisher<Integer> p = basicPublisher(); |
519 |
|
|
TestSubscriber s1 = new TestSubscriber(); |
520 |
|
|
TestSubscriber s2 = new TestSubscriber(); |
521 |
|
|
p.subscribe(s1); |
522 |
|
|
p.subscribe(s2); |
523 |
|
|
s2.awaitSubscribe(); |
524 |
|
|
s1.awaitSubscribe(); |
525 |
|
|
s1.request = false; |
526 |
|
|
p.submit(1); |
527 |
|
|
p.submit(2); |
528 |
|
|
p.close(); |
529 |
|
|
s2.awaitComplete(); |
530 |
jsr166 |
1.6 |
assertEquals(2, s2.nexts); |
531 |
|
|
assertEquals(1, s2.completes); |
532 |
dl |
1.1 |
s1.awaitNext(1); |
533 |
jsr166 |
1.6 |
assertEquals(1, s1.nexts); |
534 |
dl |
1.1 |
} |
535 |
|
|
|
536 |
|
|
/** |
537 |
|
|
* Negative request causes error |
538 |
|
|
*/ |
539 |
|
|
public void testRequest3() { |
540 |
|
|
SubmissionPublisher<Integer> p = basicPublisher(); |
541 |
|
|
TestSubscriber s1 = new TestSubscriber(); |
542 |
|
|
TestSubscriber s2 = new TestSubscriber(); |
543 |
|
|
p.subscribe(s1); |
544 |
|
|
p.subscribe(s2); |
545 |
|
|
s2.awaitSubscribe(); |
546 |
|
|
s1.awaitSubscribe(); |
547 |
|
|
s1.sn.request(-1L); |
548 |
|
|
p.submit(1); |
549 |
|
|
p.submit(2); |
550 |
|
|
p.close(); |
551 |
|
|
s2.awaitComplete(); |
552 |
jsr166 |
1.6 |
assertEquals(2, s2.nexts); |
553 |
|
|
assertEquals(1, s2.completes); |
554 |
dl |
1.1 |
s1.awaitError(); |
555 |
jsr166 |
1.6 |
assertEquals(1, s1.errors); |
556 |
dl |
1.1 |
assertTrue(s1.lastError instanceof IllegalArgumentException); |
557 |
|
|
} |
558 |
|
|
|
559 |
|
|
/** |
560 |
|
|
* estimateMinimumDemand reports 0 until request, nonzero after |
561 |
|
|
* request, and zero again after delivery |
562 |
|
|
*/ |
563 |
|
|
public void testEstimateMinimumDemand() { |
564 |
|
|
TestSubscriber s = new TestSubscriber(); |
565 |
|
|
SubmissionPublisher<Integer> p = basicPublisher(); |
566 |
|
|
s.request = false; |
567 |
|
|
p.subscribe(s); |
568 |
|
|
s.awaitSubscribe(); |
569 |
jsr166 |
1.6 |
assertEquals(0, p.estimateMinimumDemand()); |
570 |
dl |
1.1 |
s.sn.request(1); |
571 |
jsr166 |
1.6 |
assertEquals(1, p.estimateMinimumDemand()); |
572 |
dl |
1.1 |
p.submit(1); |
573 |
|
|
s.awaitNext(1); |
574 |
jsr166 |
1.6 |
assertEquals(0, p.estimateMinimumDemand()); |
575 |
dl |
1.1 |
} |
576 |
|
|
|
577 |
|
|
/** |
578 |
jsr166 |
1.3 |
* submit to a publisher with no subscribers returns lag 0 |
579 |
dl |
1.1 |
*/ |
580 |
|
|
public void testEmptySubmit() { |
581 |
|
|
SubmissionPublisher<Integer> p = basicPublisher(); |
582 |
jsr166 |
1.6 |
assertEquals(0, p.submit(1)); |
583 |
dl |
1.1 |
} |
584 |
|
|
|
585 |
|
|
/** |
586 |
jsr166 |
1.3 |
* submit(null) throws NPE |
587 |
dl |
1.1 |
*/ |
588 |
|
|
public void testNullSubmit() { |
589 |
|
|
SubmissionPublisher<Integer> p = basicPublisher(); |
590 |
|
|
try { |
591 |
|
|
p.submit(null); |
592 |
jsr166 |
1.2 |
shouldThrow(); |
593 |
|
|
} catch (NullPointerException success) {} |
594 |
dl |
1.1 |
} |
595 |
|
|
|
596 |
|
|
/** |
597 |
jsr166 |
1.3 |
* submit returns number of lagged items, compatible with result |
598 |
dl |
1.1 |
* of estimateMaximumLag. |
599 |
|
|
*/ |
600 |
|
|
public void testLaggedSubmit() { |
601 |
|
|
SubmissionPublisher<Integer> p = basicPublisher(); |
602 |
|
|
TestSubscriber s1 = new TestSubscriber(); |
603 |
|
|
s1.request = false; |
604 |
|
|
TestSubscriber s2 = new TestSubscriber(); |
605 |
|
|
s2.request = false; |
606 |
|
|
p.subscribe(s1); |
607 |
|
|
p.subscribe(s2); |
608 |
|
|
s2.awaitSubscribe(); |
609 |
|
|
s1.awaitSubscribe(); |
610 |
jsr166 |
1.6 |
assertEquals(1, p.submit(1)); |
611 |
dl |
1.1 |
assertTrue(p.estimateMaximumLag() >= 1); |
612 |
|
|
assertTrue(p.submit(2) >= 2); |
613 |
|
|
assertTrue(p.estimateMaximumLag() >= 2); |
614 |
|
|
s1.sn.request(4); |
615 |
|
|
assertTrue(p.submit(3) >= 3); |
616 |
|
|
assertTrue(p.estimateMaximumLag() >= 3); |
617 |
|
|
s2.sn.request(4); |
618 |
|
|
p.submit(4); |
619 |
|
|
p.close(); |
620 |
|
|
s2.awaitComplete(); |
621 |
jsr166 |
1.6 |
assertEquals(4, s2.nexts); |
622 |
dl |
1.1 |
s1.awaitComplete(); |
623 |
jsr166 |
1.6 |
assertEquals(4, s2.nexts); |
624 |
dl |
1.1 |
} |
625 |
|
|
|
626 |
|
|
/** |
627 |
|
|
* submit eventually issues requested items when buffer capacity is 1 |
628 |
|
|
*/ |
629 |
|
|
public void testCap1Submit() { |
630 |
|
|
SubmissionPublisher<Integer> p = new SubmissionPublisher<Integer>( |
631 |
|
|
basicExecutor, 1); |
632 |
|
|
TestSubscriber s1 = new TestSubscriber(); |
633 |
|
|
TestSubscriber s2 = new TestSubscriber(); |
634 |
|
|
p.subscribe(s1); |
635 |
|
|
p.subscribe(s2); |
636 |
|
|
for (int i = 1; i <= 20; ++i) { |
637 |
|
|
assertTrue(p.estimateMinimumDemand() <= 1); |
638 |
|
|
assertTrue(p.submit(i) >= 0); |
639 |
|
|
} |
640 |
|
|
p.close(); |
641 |
|
|
s2.awaitComplete(); |
642 |
|
|
s1.awaitComplete(); |
643 |
jsr166 |
1.6 |
assertEquals(20, s2.nexts); |
644 |
|
|
assertEquals(1, s2.completes); |
645 |
|
|
assertEquals(20, s1.nexts); |
646 |
|
|
assertEquals(1, s1.completes); |
647 |
dl |
1.1 |
} |
648 |
jsr166 |
1.2 |
|
649 |
dl |
1.1 |
static boolean noopHandle(AtomicInteger count) { |
650 |
|
|
count.getAndIncrement(); |
651 |
|
|
return false; |
652 |
|
|
} |
653 |
|
|
|
654 |
|
|
static boolean reqHandle(AtomicInteger count, Subscriber s) { |
655 |
|
|
count.getAndIncrement(); |
656 |
|
|
((TestSubscriber)s).sn.request(Long.MAX_VALUE); |
657 |
|
|
return true; |
658 |
|
|
} |
659 |
|
|
|
660 |
|
|
/** |
661 |
jsr166 |
1.3 |
* offer to a publisher with no subscribers returns lag 0 |
662 |
dl |
1.1 |
*/ |
663 |
|
|
public void testEmptyOffer() { |
664 |
|
|
SubmissionPublisher<Integer> p = basicPublisher(); |
665 |
jsr166 |
1.3 |
assertEquals(0, p.offer(1, null)); |
666 |
dl |
1.1 |
} |
667 |
|
|
|
668 |
|
|
/** |
669 |
jsr166 |
1.3 |
* offer(null) throws NPE |
670 |
dl |
1.1 |
*/ |
671 |
|
|
public void testNullOffer() { |
672 |
|
|
SubmissionPublisher<Integer> p = basicPublisher(); |
673 |
|
|
try { |
674 |
|
|
p.offer(null, null); |
675 |
jsr166 |
1.2 |
shouldThrow(); |
676 |
|
|
} catch (NullPointerException success) {} |
677 |
dl |
1.1 |
} |
678 |
|
|
|
679 |
|
|
/** |
680 |
jsr166 |
1.3 |
* offer returns number of lagged items if not saturated |
681 |
dl |
1.1 |
*/ |
682 |
|
|
public void testLaggedOffer() { |
683 |
|
|
SubmissionPublisher<Integer> p = basicPublisher(); |
684 |
|
|
TestSubscriber s1 = new TestSubscriber(); |
685 |
|
|
s1.request = false; |
686 |
|
|
TestSubscriber s2 = new TestSubscriber(); |
687 |
|
|
s2.request = false; |
688 |
|
|
p.subscribe(s1); |
689 |
|
|
p.subscribe(s2); |
690 |
|
|
s2.awaitSubscribe(); |
691 |
|
|
s1.awaitSubscribe(); |
692 |
|
|
assertTrue(p.offer(1, null) >= 1); |
693 |
|
|
assertTrue(p.offer(2, null) >= 2); |
694 |
|
|
s1.sn.request(4); |
695 |
|
|
assertTrue(p.offer(3, null) >= 3); |
696 |
|
|
s2.sn.request(4); |
697 |
|
|
p.offer(4, null); |
698 |
|
|
p.close(); |
699 |
|
|
s2.awaitComplete(); |
700 |
jsr166 |
1.6 |
assertEquals(4, s2.nexts); |
701 |
dl |
1.1 |
s1.awaitComplete(); |
702 |
jsr166 |
1.6 |
assertEquals(4, s2.nexts); |
703 |
dl |
1.1 |
} |
704 |
|
|
|
705 |
|
|
/** |
706 |
jsr166 |
1.3 |
* offer reports drops if saturated |
707 |
dl |
1.1 |
*/ |
708 |
|
|
public void testDroppedOffer() { |
709 |
|
|
SubmissionPublisher<Integer> p = new SubmissionPublisher<Integer>( |
710 |
|
|
basicExecutor, 4); |
711 |
|
|
TestSubscriber s1 = new TestSubscriber(); |
712 |
|
|
s1.request = false; |
713 |
|
|
TestSubscriber s2 = new TestSubscriber(); |
714 |
|
|
s2.request = false; |
715 |
|
|
p.subscribe(s1); |
716 |
|
|
p.subscribe(s2); |
717 |
|
|
s2.awaitSubscribe(); |
718 |
|
|
s1.awaitSubscribe(); |
719 |
|
|
for (int i = 1; i <= 4; ++i) |
720 |
|
|
assertTrue(p.offer(i, null) >= 0); |
721 |
|
|
p.offer(5, null); |
722 |
|
|
assertTrue(p.offer(6, null) < 0); |
723 |
|
|
s1.sn.request(64); |
724 |
|
|
assertTrue(p.offer(7, null) < 0); |
725 |
|
|
s2.sn.request(64); |
726 |
|
|
p.close(); |
727 |
|
|
s2.awaitComplete(); |
728 |
|
|
assertTrue(s2.nexts >= 4); |
729 |
|
|
s1.awaitComplete(); |
730 |
|
|
assertTrue(s1.nexts >= 4); |
731 |
|
|
} |
732 |
|
|
|
733 |
|
|
/** |
734 |
jsr166 |
1.3 |
* offer invokes drop handler if saturated |
735 |
dl |
1.1 |
*/ |
736 |
|
|
public void testHandledDroppedOffer() { |
737 |
|
|
AtomicInteger calls = new AtomicInteger(); |
738 |
|
|
SubmissionPublisher<Integer> p = new SubmissionPublisher<Integer>( |
739 |
|
|
basicExecutor, 4); |
740 |
|
|
TestSubscriber s1 = new TestSubscriber(); |
741 |
|
|
s1.request = false; |
742 |
|
|
TestSubscriber s2 = new TestSubscriber(); |
743 |
|
|
s2.request = false; |
744 |
|
|
p.subscribe(s1); |
745 |
|
|
p.subscribe(s2); |
746 |
|
|
s2.awaitSubscribe(); |
747 |
|
|
s1.awaitSubscribe(); |
748 |
|
|
for (int i = 1; i <= 4; ++i) |
749 |
|
|
assertTrue(p.offer(i, (s, x) -> noopHandle(calls)) >= 0); |
750 |
|
|
p.offer(4, (s, x) -> noopHandle(calls)); |
751 |
|
|
assertTrue(p.offer(6, (s, x) -> noopHandle(calls)) < 0); |
752 |
|
|
s1.sn.request(64); |
753 |
|
|
assertTrue(p.offer(7, (s, x) -> noopHandle(calls)) < 0); |
754 |
|
|
s2.sn.request(64); |
755 |
|
|
p.close(); |
756 |
|
|
s2.awaitComplete(); |
757 |
|
|
s1.awaitComplete(); |
758 |
|
|
assertTrue(calls.get() >= 4); |
759 |
|
|
} |
760 |
|
|
|
761 |
|
|
/** |
762 |
jsr166 |
1.3 |
* offer succeeds if drop handler forces request |
763 |
dl |
1.1 |
*/ |
764 |
|
|
public void testRecoveredHandledDroppedOffer() { |
765 |
|
|
AtomicInteger calls = new AtomicInteger(); |
766 |
|
|
SubmissionPublisher<Integer> p = new SubmissionPublisher<Integer>( |
767 |
|
|
basicExecutor, 4); |
768 |
|
|
TestSubscriber s1 = new TestSubscriber(); |
769 |
|
|
s1.request = false; |
770 |
|
|
TestSubscriber s2 = new TestSubscriber(); |
771 |
|
|
s2.request = false; |
772 |
|
|
p.subscribe(s1); |
773 |
|
|
p.subscribe(s2); |
774 |
|
|
s2.awaitSubscribe(); |
775 |
|
|
s1.awaitSubscribe(); |
776 |
|
|
int n = 0; |
777 |
|
|
for (int i = 1; i <= 8; ++i) { |
778 |
|
|
int d = p.offer(i, (s, x) -> reqHandle(calls, s)); |
779 |
|
|
n = n + 2 + (d < 0 ? d : 0); |
780 |
|
|
} |
781 |
|
|
p.close(); |
782 |
|
|
s2.awaitComplete(); |
783 |
|
|
s1.awaitComplete(); |
784 |
jsr166 |
1.6 |
assertEquals(n, s1.nexts + s2.nexts); |
785 |
dl |
1.1 |
assertTrue(calls.get() >= 2); |
786 |
|
|
} |
787 |
|
|
|
788 |
|
|
/** |
789 |
jsr166 |
1.4 |
* Timed offer to a publisher with no subscribers returns lag 0 |
790 |
dl |
1.1 |
*/ |
791 |
|
|
public void testEmptyTimedOffer() { |
792 |
|
|
SubmissionPublisher<Integer> p = basicPublisher(); |
793 |
jsr166 |
1.7 |
long startTime = System.nanoTime(); |
794 |
jsr166 |
1.4 |
assertEquals(0, p.offer(1, LONG_DELAY_MS, MILLISECONDS, null)); |
795 |
jsr166 |
1.7 |
assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS / 2); |
796 |
dl |
1.1 |
} |
797 |
|
|
|
798 |
|
|
/** |
799 |
jsr166 |
1.3 |
* Timed offer with null item or TimeUnit throws NPE |
800 |
dl |
1.1 |
*/ |
801 |
|
|
public void testNullTimedOffer() { |
802 |
|
|
SubmissionPublisher<Integer> p = basicPublisher(); |
803 |
jsr166 |
1.7 |
long startTime = System.nanoTime(); |
804 |
dl |
1.1 |
try { |
805 |
jsr166 |
1.7 |
p.offer(null, LONG_DELAY_MS, MILLISECONDS, null); |
806 |
jsr166 |
1.2 |
shouldThrow(); |
807 |
|
|
} catch (NullPointerException success) {} |
808 |
dl |
1.1 |
try { |
809 |
jsr166 |
1.7 |
p.offer(1, LONG_DELAY_MS, null, null); |
810 |
jsr166 |
1.2 |
shouldThrow(); |
811 |
|
|
} catch (NullPointerException success) {} |
812 |
jsr166 |
1.7 |
assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS / 2); |
813 |
dl |
1.1 |
} |
814 |
|
|
|
815 |
|
|
/** |
816 |
jsr166 |
1.3 |
* Timed offer returns number of lagged items if not saturated |
817 |
dl |
1.1 |
*/ |
818 |
|
|
public void testLaggedTimedOffer() { |
819 |
|
|
SubmissionPublisher<Integer> p = basicPublisher(); |
820 |
|
|
TestSubscriber s1 = new TestSubscriber(); |
821 |
|
|
s1.request = false; |
822 |
|
|
TestSubscriber s2 = new TestSubscriber(); |
823 |
|
|
s2.request = false; |
824 |
|
|
p.subscribe(s1); |
825 |
|
|
p.subscribe(s2); |
826 |
|
|
s2.awaitSubscribe(); |
827 |
|
|
s1.awaitSubscribe(); |
828 |
jsr166 |
1.7 |
long startTime = System.nanoTime(); |
829 |
|
|
assertTrue(p.offer(1, LONG_DELAY_MS, MILLISECONDS, null) >= 1); |
830 |
|
|
assertTrue(p.offer(2, LONG_DELAY_MS, MILLISECONDS, null) >= 2); |
831 |
dl |
1.1 |
s1.sn.request(4); |
832 |
jsr166 |
1.7 |
assertTrue(p.offer(3, LONG_DELAY_MS, MILLISECONDS, null) >= 3); |
833 |
dl |
1.1 |
s2.sn.request(4); |
834 |
jsr166 |
1.7 |
p.offer(4, LONG_DELAY_MS, MILLISECONDS, null); |
835 |
dl |
1.1 |
p.close(); |
836 |
|
|
s2.awaitComplete(); |
837 |
jsr166 |
1.6 |
assertEquals(4, s2.nexts); |
838 |
dl |
1.1 |
s1.awaitComplete(); |
839 |
jsr166 |
1.6 |
assertEquals(4, s2.nexts); |
840 |
jsr166 |
1.7 |
assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS / 2); |
841 |
dl |
1.1 |
} |
842 |
|
|
|
843 |
|
|
/** |
844 |
jsr166 |
1.3 |
* Timed offer reports drops if saturated |
845 |
dl |
1.1 |
*/ |
846 |
|
|
public void testDroppedTimedOffer() { |
847 |
|
|
SubmissionPublisher<Integer> p = new SubmissionPublisher<Integer>( |
848 |
|
|
basicExecutor, 4); |
849 |
|
|
TestSubscriber s1 = new TestSubscriber(); |
850 |
|
|
s1.request = false; |
851 |
|
|
TestSubscriber s2 = new TestSubscriber(); |
852 |
|
|
s2.request = false; |
853 |
|
|
p.subscribe(s1); |
854 |
|
|
p.subscribe(s2); |
855 |
|
|
s2.awaitSubscribe(); |
856 |
|
|
s1.awaitSubscribe(); |
857 |
dl |
1.9 |
long delay = timeoutMillis(); |
858 |
dl |
1.1 |
for (int i = 1; i <= 4; ++i) |
859 |
dl |
1.9 |
assertTrue(p.offer(i, delay, MILLISECONDS, null) >= 0); |
860 |
|
|
long startTime = System.nanoTime(); |
861 |
|
|
assertTrue(p.offer(5, delay, MILLISECONDS, null) < 0); |
862 |
dl |
1.1 |
s1.sn.request(64); |
863 |
dl |
1.9 |
assertTrue(p.offer(6, delay, MILLISECONDS, null) < 0); |
864 |
|
|
// 2 * delay should elapse but check only 1 * delay to allow timer slop |
865 |
|
|
assertTrue(millisElapsedSince(startTime) >= delay); |
866 |
dl |
1.1 |
s2.sn.request(64); |
867 |
|
|
p.close(); |
868 |
|
|
s2.awaitComplete(); |
869 |
|
|
assertTrue(s2.nexts >= 2); |
870 |
|
|
s1.awaitComplete(); |
871 |
|
|
assertTrue(s1.nexts >= 2); |
872 |
|
|
} |
873 |
|
|
|
874 |
|
|
/** |
875 |
jsr166 |
1.3 |
* Timed offer invokes drop handler if saturated |
876 |
dl |
1.1 |
*/ |
877 |
|
|
public void testHandledDroppedTimedOffer() { |
878 |
|
|
AtomicInteger calls = new AtomicInteger(); |
879 |
|
|
SubmissionPublisher<Integer> p = new SubmissionPublisher<Integer>( |
880 |
|
|
basicExecutor, 4); |
881 |
|
|
TestSubscriber s1 = new TestSubscriber(); |
882 |
|
|
s1.request = false; |
883 |
|
|
TestSubscriber s2 = new TestSubscriber(); |
884 |
|
|
s2.request = false; |
885 |
|
|
p.subscribe(s1); |
886 |
|
|
p.subscribe(s2); |
887 |
|
|
s2.awaitSubscribe(); |
888 |
|
|
s1.awaitSubscribe(); |
889 |
dl |
1.9 |
long delay = timeoutMillis(); |
890 |
dl |
1.1 |
for (int i = 1; i <= 4; ++i) |
891 |
dl |
1.9 |
assertTrue(p.offer(i, delay, MILLISECONDS, (s, x) -> noopHandle(calls)) >= 0); |
892 |
|
|
long startTime = System.nanoTime(); |
893 |
|
|
assertTrue(p.offer(5, delay, MILLISECONDS, (s, x) -> noopHandle(calls)) < 0); |
894 |
dl |
1.1 |
s1.sn.request(64); |
895 |
dl |
1.9 |
assertTrue(p.offer(6, delay, MILLISECONDS, (s, x) -> noopHandle(calls)) < 0); |
896 |
|
|
assertTrue(millisElapsedSince(startTime) >= delay); |
897 |
dl |
1.1 |
s2.sn.request(64); |
898 |
|
|
p.close(); |
899 |
|
|
s2.awaitComplete(); |
900 |
|
|
s1.awaitComplete(); |
901 |
|
|
assertTrue(calls.get() >= 2); |
902 |
|
|
} |
903 |
|
|
|
904 |
|
|
/** |
905 |
jsr166 |
1.3 |
* Timed offer succeeds if drop handler forces request |
906 |
dl |
1.1 |
*/ |
907 |
|
|
public void testRecoveredHandledDroppedTimedOffer() { |
908 |
|
|
AtomicInteger calls = new AtomicInteger(); |
909 |
|
|
SubmissionPublisher<Integer> p = new SubmissionPublisher<Integer>( |
910 |
|
|
basicExecutor, 4); |
911 |
|
|
TestSubscriber s1 = new TestSubscriber(); |
912 |
|
|
s1.request = false; |
913 |
|
|
TestSubscriber s2 = new TestSubscriber(); |
914 |
|
|
s2.request = false; |
915 |
|
|
p.subscribe(s1); |
916 |
|
|
p.subscribe(s2); |
917 |
|
|
s2.awaitSubscribe(); |
918 |
|
|
s1.awaitSubscribe(); |
919 |
|
|
int n = 0; |
920 |
dl |
1.9 |
long delay = timeoutMillis(); |
921 |
|
|
long startTime = System.nanoTime(); |
922 |
|
|
for (int i = 1; i <= 6; ++i) { |
923 |
|
|
int d = p.offer(i, delay, MILLISECONDS, (s, x) -> reqHandle(calls, s)); |
924 |
dl |
1.1 |
n = n + 2 + (d < 0 ? d : 0); |
925 |
|
|
} |
926 |
dl |
1.9 |
assertTrue(millisElapsedSince(startTime) >= delay); |
927 |
dl |
1.1 |
p.close(); |
928 |
|
|
s2.awaitComplete(); |
929 |
|
|
s1.awaitComplete(); |
930 |
jsr166 |
1.6 |
assertEquals(n, s1.nexts + s2.nexts); |
931 |
dl |
1.1 |
assertTrue(calls.get() >= 2); |
932 |
|
|
} |
933 |
|
|
|
934 |
dl |
1.10 |
/** |
935 |
|
|
* consume returns a CompletableFuture that is done when |
936 |
|
|
* publisher completes |
937 |
|
|
*/ |
938 |
|
|
public void testConsume() { |
939 |
|
|
AtomicInteger sum = new AtomicInteger(); |
940 |
|
|
SubmissionPublisher<Integer> p = basicPublisher(); |
941 |
jsr166 |
1.11 |
CompletableFuture<Void> f = |
942 |
jsr166 |
1.15 |
p.consume((Integer x) -> sum.getAndAdd(x.intValue())); |
943 |
dl |
1.10 |
int n = 20; |
944 |
|
|
for (int i = 1; i <= n; ++i) |
945 |
|
|
p.submit(i); |
946 |
|
|
p.close(); |
947 |
|
|
f.join(); |
948 |
|
|
assertEquals((n * (n + 1)) / 2, sum.get()); |
949 |
|
|
} |
950 |
|
|
|
951 |
|
|
/** |
952 |
|
|
* consume(null) throws NPE |
953 |
|
|
*/ |
954 |
|
|
public void testConsumeNPE() { |
955 |
|
|
SubmissionPublisher<Integer> p = basicPublisher(); |
956 |
|
|
try { |
957 |
|
|
CompletableFuture<Void> f = p.consume(null); |
958 |
|
|
shouldThrow(); |
959 |
jsr166 |
1.11 |
} catch (NullPointerException success) {} |
960 |
dl |
1.10 |
} |
961 |
|
|
|
962 |
|
|
/** |
963 |
|
|
* consume eventually stops processing published items if cancelled |
964 |
|
|
*/ |
965 |
|
|
public void testCancelledConsume() { |
966 |
|
|
AtomicInteger count = new AtomicInteger(); |
967 |
|
|
SubmissionPublisher<Integer> p = basicPublisher(); |
968 |
|
|
CompletableFuture<Void> f = p.consume(x -> count.getAndIncrement()); |
969 |
|
|
f.cancel(true); |
970 |
|
|
int n = 1000000; // arbitrary limit |
971 |
|
|
for (int i = 1; i <= n; ++i) |
972 |
|
|
p.submit(i); |
973 |
|
|
assertTrue(count.get() < n); |
974 |
|
|
} |
975 |
jsr166 |
1.11 |
|
976 |
dl |
1.1 |
} |