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Comparing jsr166/src/test/tck/CompletableFutureTest.java (file contents):
Revision 1.79 by jsr166, Mon Jun 16 17:08:15 2014 UTC vs.
Revision 1.170 by jsr166, Mon Jul 18 19:30:49 2016 UTC

#	Line 5 | Line 5
5		* http://creativecommons.org/publicdomain/zero/1.0/
6		*/
7
8	<	import junit.framework.*;
8	>	import static java.util.concurrent.TimeUnit.MILLISECONDS;
9	>	import static java.util.concurrent.TimeUnit.SECONDS;
10	>	import static java.util.concurrent.CompletableFuture.completedFuture;
11	>	import static java.util.concurrent.CompletableFuture.failedFuture;
12	>
13	>	import java.lang.reflect.Method;
14	>	import java.lang.reflect.Modifier;
15	>
16	>	import java.util.stream.Collectors;
17	>	import java.util.stream.Stream;
18	>
19	>	import java.util.ArrayList;
20	>	import java.util.Arrays;
21	>	import java.util.List;
22	>	import java.util.Objects;
23	>	import java.util.Set;
24		import java.util.concurrent.Callable;
10	–	import java.util.concurrent.Executor;
11	–	import java.util.concurrent.ExecutorService;
12	–	import java.util.concurrent.Executors;
25		import java.util.concurrent.CancellationException;
14	–	import java.util.concurrent.CountDownLatch;
15	–	import java.util.concurrent.ExecutionException;
16	–	import java.util.concurrent.Future;
26		import java.util.concurrent.CompletableFuture;
27		import java.util.concurrent.CompletionException;
28		import java.util.concurrent.CompletionStage;
29	+	import java.util.concurrent.ExecutionException;
30	+	import java.util.concurrent.Executor;
31		import java.util.concurrent.ForkJoinPool;
32		import java.util.concurrent.ForkJoinTask;
33	+	import java.util.concurrent.RejectedExecutionException;
34		import java.util.concurrent.TimeoutException;
35	+	import java.util.concurrent.TimeUnit;
36		import java.util.concurrent.atomic.AtomicInteger;
37	<	import static java.util.concurrent.TimeUnit.MILLISECONDS;
25	<	import static java.util.concurrent.TimeUnit.SECONDS;
26	<	import java.util.*;
27	<	import java.util.function.Supplier;
28	<	import java.util.function.Consumer;
37	>	import java.util.concurrent.atomic.AtomicReference;
38		import java.util.function.BiConsumer;
30	–	import java.util.function.Function;
39		import java.util.function.BiFunction;
40	+	import java.util.function.Consumer;
41	+	import java.util.function.Function;
42	+	import java.util.function.Predicate;
43	+	import java.util.function.Supplier;
44	+
45	+	import junit.framework.AssertionFailedError;
46	+	import junit.framework.Test;
47	+	import junit.framework.TestSuite;
48
49		public class CompletableFutureTest extends JSR166TestCase {
50
51		public static void main(String[] args) {
52	<	junit.textui.TestRunner.run(suite());
52	>	main(suite(), args);
53		}
54		public static Test suite() {
55		return new TestSuite(CompletableFutureTest.class);
#	Line 44 | Line 60 | public class CompletableFutureTest exten
60		void checkIncomplete(CompletableFuture<?> f) {
61		assertFalse(f.isDone());
62		assertFalse(f.isCancelled());
63	<	assertTrue(f.toString().contains("[Not completed]"));
63	>	assertTrue(f.toString().contains("Not completed"));
64		try {
65		assertNull(f.getNow(null));
66		} catch (Throwable fail) { threadUnexpectedException(fail); }
#	Line 57 | Line 73 | public class CompletableFutureTest exten
73		}
74
75		<T> void checkCompletedNormally(CompletableFuture<T> f, T value) {
76	<	try {
77	<	assertEquals(value, f.get(LONG_DELAY_MS, MILLISECONDS));
62	<	} catch (Throwable fail) { threadUnexpectedException(fail); }
76	>	checkTimedGet(f, value);
77	>
78		try {
79		assertEquals(value, f.join());
80		} catch (Throwable fail) { threadUnexpectedException(fail); }
#	Line 75 | Line 90 | public class CompletableFutureTest exten
90		assertTrue(f.toString().contains("[Completed normally]"));
91		}
92
93	<	void checkCompletedWithWrappedCFException(CompletableFuture<?> f) {
94	<	try {
95	<	f.get(LONG_DELAY_MS, MILLISECONDS);
96	<	shouldThrow();
97	<	} catch (ExecutionException success) {
98	<	assertTrue(success.getCause() instanceof CFException);
99	<	} catch (Throwable fail) { threadUnexpectedException(fail); }
100	<	try {
101	<	f.join();
102	<	shouldThrow();
103	<	} catch (CompletionException success) {
104	<	assertTrue(success.getCause() instanceof CFException);
105	<	}
106	<	try {
107	<	f.getNow(null);
108	<	shouldThrow();
109	<	} catch (CompletionException success) {
95	<	assertTrue(success.getCause() instanceof CFException);
93	>	/**
94	>	* Returns the "raw" internal exceptional completion of f,
95	>	* without any additional wrapping with CompletionException.
96	>	*/
97	>	<U> Throwable exceptionalCompletion(CompletableFuture<U> f) {
98	>	// handle (and whenComplete) can distinguish between "direct"
99	>	// and "wrapped" exceptional completion
100	>	return f.handle((U u, Throwable t) -> t).join();
101	>	}
102	>
103	>	void checkCompletedExceptionally(CompletableFuture<?> f,
104	>	boolean wrapped,
105	>	Consumer<Throwable> checker) {
106	>	Throwable cause = exceptionalCompletion(f);
107	>	if (wrapped) {
108	>	assertTrue(cause instanceof CompletionException);
109	>	cause = cause.getCause();
110		}
111	<	try {
98	<	f.get();
99	<	shouldThrow();
100	<	} catch (ExecutionException success) {
101	<	assertTrue(success.getCause() instanceof CFException);
102	<	} catch (Throwable fail) { threadUnexpectedException(fail); }
103	<	assertTrue(f.isDone());
104	<	assertFalse(f.isCancelled());
105	<	assertTrue(f.toString().contains("[Completed exceptionally]"));
106	<	}
111	>	checker.accept(cause);
112
113	<	<U> void checkCompletedExceptionallyWithRootCause(CompletableFuture<U> f,
109	<	Throwable ex) {
113	>	long startTime = System.nanoTime();
114		try {
115		f.get(LONG_DELAY_MS, MILLISECONDS);
116		shouldThrow();
117		} catch (ExecutionException success) {
118	<	assertSame(ex, success.getCause());
118	>	assertSame(cause, success.getCause());
119		} catch (Throwable fail) { threadUnexpectedException(fail); }
120	+	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS / 2);
121	+
122		try {
123		f.join();
124		shouldThrow();
125		} catch (CompletionException success) {
126	<	assertSame(ex, success.getCause());
127	<	}
126	>	assertSame(cause, success.getCause());
127	>	} catch (Throwable fail) { threadUnexpectedException(fail); }
128	>
129		try {
130		f.getNow(null);
131		shouldThrow();
132		} catch (CompletionException success) {
133	<	assertSame(ex, success.getCause());
134	<	}
133	>	assertSame(cause, success.getCause());
134	>	} catch (Throwable fail) { threadUnexpectedException(fail); }
135	>
136		try {
137		f.get();
138		shouldThrow();
139		} catch (ExecutionException success) {
140	<	assertSame(ex, success.getCause());
140	>	assertSame(cause, success.getCause());
141		} catch (Throwable fail) { threadUnexpectedException(fail); }
142
135	–	assertTrue(f.isDone());
143		assertFalse(f.isCancelled());
144	+	assertTrue(f.isDone());
145	+	assertTrue(f.isCompletedExceptionally());
146		assertTrue(f.toString().contains("[Completed exceptionally]"));
147		}
148
149	<	<U> void checkCompletedWithWrappedException(CompletableFuture<U> f,
150	<	Throwable ex) {
151	<	checkCompletedExceptionallyWithRootCause(f, ex);
143	<	try {
144	<	CompletableFuture<Throwable> spy = f.handle
145	<	((U u, Throwable t) -> t);
146	<	assertTrue(spy.join() instanceof CompletionException);
147	<	assertSame(ex, spy.join().getCause());
148	<	} catch (Throwable fail) { threadUnexpectedException(fail); }
149	>	void checkCompletedWithWrappedCFException(CompletableFuture<?> f) {
150	>	checkCompletedExceptionally(f, true,
151	>	(t) -> assertTrue(t instanceof CFException));
152		}
153
154	<	<U> void checkCompletedExceptionally(CompletableFuture<U> f, Throwable ex) {
155	<	checkCompletedExceptionallyWithRootCause(f, ex);
156	<	try {
157	<	CompletableFuture<Throwable> spy = f.handle
158	<	((U u, Throwable t) -> t);
159	<	assertSame(ex, spy.join());
160	<	} catch (Throwable fail) { threadUnexpectedException(fail); }
154	>	void checkCompletedWithWrappedCancellationException(CompletableFuture<?> f) {
155	>	checkCompletedExceptionally(f, true,
156	>	(t) -> assertTrue(t instanceof CancellationException));
157	>	}
158	>
159	>	void checkCompletedWithTimeoutException(CompletableFuture<?> f) {
160	>	checkCompletedExceptionally(f, false,
161	>	(t) -> assertTrue(t instanceof TimeoutException));
162	>	}
163	>
164	>	void checkCompletedWithWrappedException(CompletableFuture<?> f,
165	>	Throwable ex) {
166	>	checkCompletedExceptionally(f, true, (t) -> assertSame(t, ex));
167	>	}
168	>
169	>	void checkCompletedExceptionally(CompletableFuture<?> f, Throwable ex) {
170	>	checkCompletedExceptionally(f, false, (t) -> assertSame(t, ex));
171		}
172
173		void checkCancelled(CompletableFuture<?> f) {
174	+	long startTime = System.nanoTime();
175		try {
176		f.get(LONG_DELAY_MS, MILLISECONDS);
177		shouldThrow();
178		} catch (CancellationException success) {
179		} catch (Throwable fail) { threadUnexpectedException(fail); }
180	+	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS / 2);
181	+
182		try {
183		f.join();
184		shouldThrow();
#	Line 176 | Line 192 | public class CompletableFutureTest exten
192		shouldThrow();
193		} catch (CancellationException success) {
194		} catch (Throwable fail) { threadUnexpectedException(fail); }
179	–	assertTrue(f.isDone());
180	–	assertTrue(f.isCompletedExceptionally());
181	–	assertTrue(f.isCancelled());
182	–	assertTrue(f.toString().contains("[Completed exceptionally]"));
183	–	}
195
196	<	void checkCompletedWithWrappedCancellationException(CompletableFuture<?> f) {
197	<	try {
187	<	f.get(LONG_DELAY_MS, MILLISECONDS);
188	<	shouldThrow();
189	<	} catch (ExecutionException success) {
190	<	assertTrue(success.getCause() instanceof CancellationException);
191	<	} catch (Throwable fail) { threadUnexpectedException(fail); }
192	<	try {
193	<	f.join();
194	<	shouldThrow();
195	<	} catch (CompletionException success) {
196	<	assertTrue(success.getCause() instanceof CancellationException);
197	<	}
198	<	try {
199	<	f.getNow(null);
200	<	shouldThrow();
201	<	} catch (CompletionException success) {
202	<	assertTrue(success.getCause() instanceof CancellationException);
203	<	}
204	<	try {
205	<	f.get();
206	<	shouldThrow();
207	<	} catch (ExecutionException success) {
208	<	assertTrue(success.getCause() instanceof CancellationException);
209	<	} catch (Throwable fail) { threadUnexpectedException(fail); }
196	>	assertTrue(exceptionalCompletion(f) instanceof CancellationException);
197	>
198		assertTrue(f.isDone());
211	–	assertFalse(f.isCancelled());
199		assertTrue(f.isCompletedExceptionally());
200	+	assertTrue(f.isCancelled());
201		assertTrue(f.toString().contains("[Completed exceptionally]"));
202		}
203
#	Line 257 | Line 245 | public class CompletableFutureTest exten
245		{
246		CompletableFuture<Integer> f = new CompletableFuture<>();
247		checkIncomplete(f);
248	<	assertTrue(f.cancel(true));
249	<	assertTrue(f.cancel(true));
248	>	assertTrue(f.cancel(mayInterruptIfRunning));
249	>	assertTrue(f.cancel(mayInterruptIfRunning));
250	>	assertTrue(f.cancel(!mayInterruptIfRunning));
251		checkCancelled(f);
252		}}
253
#	Line 471 | Line 460 | public class CompletableFutureTest exten
460		class FailingSupplier extends CheckedAction
461		implements Supplier<Integer>
462		{
463	<	FailingSupplier(ExecutionMode m) { super(m); }
463	>	final CFException ex;
464	>	FailingSupplier(ExecutionMode m) { super(m); ex = new CFException(); }
465		public Integer get() {
466		invoked();
467	<	throw new CFException();
467	>	throw ex;
468		}
469		}
470
471		class FailingConsumer extends CheckedIntegerAction
472		implements Consumer<Integer>
473		{
474	<	FailingConsumer(ExecutionMode m) { super(m); }
474	>	final CFException ex;
475	>	FailingConsumer(ExecutionMode m) { super(m); ex = new CFException(); }
476		public void accept(Integer x) {
477		invoked();
478		value = x;
479	<	throw new CFException();
479	>	throw ex;
480		}
481		}
482
483		class FailingBiConsumer extends CheckedIntegerAction
484		implements BiConsumer<Integer, Integer>
485		{
486	<	FailingBiConsumer(ExecutionMode m) { super(m); }
486	>	final CFException ex;
487	>	FailingBiConsumer(ExecutionMode m) { super(m); ex = new CFException(); }
488		public void accept(Integer x, Integer y) {
489		invoked();
490		value = subtract(x, y);
491	<	throw new CFException();
491	>	throw ex;
492		}
493		}
494
495		class FailingFunction extends CheckedIntegerAction
496		implements Function<Integer, Integer>
497		{
498	<	FailingFunction(ExecutionMode m) { super(m); }
498	>	final CFException ex;
499	>	FailingFunction(ExecutionMode m) { super(m); ex = new CFException(); }
500		public Integer apply(Integer x) {
501		invoked();
502		value = x;
503	<	throw new CFException();
503	>	throw ex;
504		}
505		}
506
507		class FailingBiFunction extends CheckedIntegerAction
508		implements BiFunction<Integer, Integer, Integer>
509		{
510	<	FailingBiFunction(ExecutionMode m) { super(m); }
510	>	final CFException ex;
511	>	FailingBiFunction(ExecutionMode m) { super(m); ex = new CFException(); }
512		public Integer apply(Integer x, Integer y) {
513		invoked();
514		value = subtract(x, y);
515	<	throw new CFException();
515	>	throw ex;
516		}
517		}
518
519		class FailingRunnable extends CheckedAction implements Runnable {
520	<	FailingRunnable(ExecutionMode m) { super(m); }
520	>	final CFException ex;
521	>	FailingRunnable(ExecutionMode m) { super(m); ex = new CFException(); }
522		public void run() {
523		invoked();
524	<	throw new CFException();
524	>	throw ex;
525		}
526		}
527
533	–
528		class CompletableFutureInc extends CheckedIntegerAction
529		implements Function<Integer, CompletableFuture<Integer>>
530		{
#	Line 547 | Line 541 | public class CompletableFutureTest exten
541		class FailingCompletableFutureFunction extends CheckedIntegerAction
542		implements Function<Integer, CompletableFuture<Integer>>
543		{
544	<	FailingCompletableFutureFunction(ExecutionMode m) { super(m); }
544	>	final CFException ex;
545	>	FailingCompletableFutureFunction(ExecutionMode m) { super(m); ex = new CFException(); }
546		public CompletableFuture<Integer> apply(Integer x) {
547		invoked();
548		value = x;
549	<	throw new CFException();
549	>	throw ex;
550	>	}
551	>	}
552	>
553	>	static class CountingRejectingExecutor implements Executor {
554	>	final RejectedExecutionException ex = new RejectedExecutionException();
555	>	final AtomicInteger count = new AtomicInteger(0);
556	>	public void execute(Runnable r) {
557	>	count.getAndIncrement();
558	>	throw ex;
559		}
560		}
561
#	Line 569 | Line 573 | public class CompletableFutureTest exten
573		}
574		}
575
576	+	static final boolean defaultExecutorIsCommonPool
577	+	= ForkJoinPool.getCommonPoolParallelism() > 1;
578	+
579		/**
580		* Permits the testing of parallel code for the 3 different
581		* execution modes without copy/pasting all the test methods.
582		*/
583		enum ExecutionMode {
584	<	DEFAULT {
584	>	SYNC {
585		public void checkExecutionMode() {
586		assertFalse(ThreadExecutor.startedCurrentThread());
587		assertNull(ForkJoinTask.getPool());
#	Line 650 | Line 657 | public class CompletableFutureTest exten
657
658		ASYNC {
659		public void checkExecutionMode() {
660	<	assertSame(ForkJoinPool.commonPool(),
661	<	ForkJoinTask.getPool());
660	>	assertEquals(defaultExecutorIsCommonPool,
661	>	(ForkJoinPool.commonPool() == ForkJoinTask.getPool()));
662		}
663		public CompletableFuture<Void> runAsync(Runnable a) {
664		return CompletableFuture.runAsync(a);
#	Line 850 | Line 857 | public class CompletableFutureTest exten
857		if (!createIncomplete) assertTrue(f.complete(v1));
858		final CompletableFuture<Integer> g = f.exceptionally
859		((Throwable t) -> {
853	–	// Should not be called
860		a.getAndIncrement();
861	<	throw new AssertionError();
861	>	threadFail("should not be called");
862	>	return null;            // unreached
863		});
864		if (createIncomplete) assertTrue(f.complete(v1));
865
#	Line 875 | Line 882 | public class CompletableFutureTest exten
882		if (!createIncomplete) f.completeExceptionally(ex);
883		final CompletableFuture<Integer> g = f.exceptionally
884		((Throwable t) -> {
885	<	ExecutionMode.DEFAULT.checkExecutionMode();
885	>	ExecutionMode.SYNC.checkExecutionMode();
886		threadAssertSame(t, ex);
887		a.getAndIncrement();
888		return v1;
#	Line 886 | Line 893 | public class CompletableFutureTest exten
893		assertEquals(1, a.get());
894		}}
895
896	+	/**
897	+	* If an "exceptionally action" throws an exception, it completes
898	+	* exceptionally with that exception
899	+	*/
900		public void testExceptionally_exceptionalCompletionActionFailed() {
901		for (boolean createIncomplete : new boolean[] { true, false })
891	–	for (Integer v1 : new Integer[] { 1, null })
902		{
903		final AtomicInteger a = new AtomicInteger(0);
904		final CFException ex1 = new CFException();
#	Line 897 | Line 907 | public class CompletableFutureTest exten
907		if (!createIncomplete) f.completeExceptionally(ex1);
908		final CompletableFuture<Integer> g = f.exceptionally
909		((Throwable t) -> {
910	<	ExecutionMode.DEFAULT.checkExecutionMode();
910	>	ExecutionMode.SYNC.checkExecutionMode();
911		threadAssertSame(t, ex1);
912		a.getAndIncrement();
913		throw ex2;
#	Line 905 | Line 915 | public class CompletableFutureTest exten
915		if (createIncomplete) f.completeExceptionally(ex1);
916
917		checkCompletedWithWrappedException(g, ex2);
918	+	checkCompletedExceptionally(f, ex1);
919		assertEquals(1, a.get());
920		}}
921
#	Line 912 | Line 923 | public class CompletableFutureTest exten
923		* whenComplete action executes on normal completion, propagating
924		* source result.
925		*/
926	<	public void testWhenComplete_normalCompletion1() {
926	>	public void testWhenComplete_normalCompletion() {
927		for (ExecutionMode m : ExecutionMode.values())
928		for (boolean createIncomplete : new boolean[] { true, false })
929		for (Integer v1 : new Integer[] { 1, null })
#	Line 922 | Line 933 | public class CompletableFutureTest exten
933		if (!createIncomplete) assertTrue(f.complete(v1));
934		final CompletableFuture<Integer> g = m.whenComplete
935		(f,
936	<	(Integer x, Throwable t) -> {
936	>	(Integer result, Throwable t) -> {
937		m.checkExecutionMode();
938	<	threadAssertSame(x, v1);
938	>	threadAssertSame(result, v1);
939		threadAssertNull(t);
940		a.getAndIncrement();
941		});
#	Line 942 | Line 953 | public class CompletableFutureTest exten
953		public void testWhenComplete_exceptionalCompletion() {
954		for (ExecutionMode m : ExecutionMode.values())
955		for (boolean createIncomplete : new boolean[] { true, false })
945	–	for (Integer v1 : new Integer[] { 1, null })
956		{
957		final AtomicInteger a = new AtomicInteger(0);
958		final CFException ex = new CFException();
#	Line 950 | Line 960 | public class CompletableFutureTest exten
960		if (!createIncomplete) f.completeExceptionally(ex);
961		final CompletableFuture<Integer> g = m.whenComplete
962		(f,
963	<	(Integer x, Throwable t) -> {
963	>	(Integer result, Throwable t) -> {
964		m.checkExecutionMode();
965	<	threadAssertNull(x);
965	>	threadAssertNull(result);
966		threadAssertSame(t, ex);
967		a.getAndIncrement();
968		});
#	Line 977 | Line 987 | public class CompletableFutureTest exten
987		if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
988		final CompletableFuture<Integer> g = m.whenComplete
989		(f,
990	<	(Integer x, Throwable t) -> {
990	>	(Integer result, Throwable t) -> {
991		m.checkExecutionMode();
992	<	threadAssertNull(x);
992	>	threadAssertNull(result);
993		threadAssertTrue(t instanceof CancellationException);
994		a.getAndIncrement();
995		});
#	Line 994 | Line 1004 | public class CompletableFutureTest exten
1004		* If a whenComplete action throws an exception when triggered by
1005		* a normal completion, it completes exceptionally
1006		*/
1007	<	public void testWhenComplete_actionFailed() {
1007	>	public void testWhenComplete_sourceCompletedNormallyActionFailed() {
1008		for (boolean createIncomplete : new boolean[] { true, false })
1009		for (ExecutionMode m : ExecutionMode.values())
1010		for (Integer v1 : new Integer[] { 1, null })
#	Line 1005 | Line 1015 | public class CompletableFutureTest exten
1015		if (!createIncomplete) assertTrue(f.complete(v1));
1016		final CompletableFuture<Integer> g = m.whenComplete
1017		(f,
1018	<	(Integer x, Throwable t) -> {
1018	>	(Integer result, Throwable t) -> {
1019		m.checkExecutionMode();
1020	<	threadAssertSame(x, v1);
1020	>	threadAssertSame(result, v1);
1021		threadAssertNull(t);
1022		a.getAndIncrement();
1023		throw ex;
#	Line 1022 | Line 1032 | public class CompletableFutureTest exten
1032		/**
1033		* If a whenComplete action throws an exception when triggered by
1034		* a source completion that also throws an exception, the source
1035	<	* exception takes precedence.
1035	>	* exception takes precedence (unlike handle)
1036		*/
1037	<	public void testWhenComplete_actionFailedSourceFailed() {
1037	>	public void testWhenComplete_sourceFailedActionFailed() {
1038		for (boolean createIncomplete : new boolean[] { true, false })
1039		for (ExecutionMode m : ExecutionMode.values())
1030	–	for (Integer v1 : new Integer[] { 1, null })
1040		{
1041		final AtomicInteger a = new AtomicInteger(0);
1042		final CFException ex1 = new CFException();
#	Line 1037 | Line 1046 | public class CompletableFutureTest exten
1046		if (!createIncomplete) f.completeExceptionally(ex1);
1047		final CompletableFuture<Integer> g = m.whenComplete
1048		(f,
1049	<	(Integer x, Throwable t) -> {
1049	>	(Integer result, Throwable t) -> {
1050		m.checkExecutionMode();
1051		threadAssertSame(t, ex1);
1052	<	threadAssertNull(x);
1052	>	threadAssertNull(result);
1053		a.getAndIncrement();
1054		throw ex2;
1055		});
#	Line 1048 | Line 1057 | public class CompletableFutureTest exten
1057
1058		checkCompletedWithWrappedException(g, ex1);
1059		checkCompletedExceptionally(f, ex1);
1060	+	if (testImplementationDetails) {
1061	+	assertEquals(1, ex1.getSuppressed().length);
1062	+	assertSame(ex2, ex1.getSuppressed()[0]);
1063	+	}
1064		assertEquals(1, a.get());
1065		}}
1066
#	Line 1065 | Line 1078 | public class CompletableFutureTest exten
1078		if (!createIncomplete) assertTrue(f.complete(v1));
1079		final CompletableFuture<Integer> g = m.handle
1080		(f,
1081	<	(Integer x, Throwable t) -> {
1081	>	(Integer result, Throwable t) -> {
1082		m.checkExecutionMode();
1083	<	threadAssertSame(x, v1);
1083	>	threadAssertSame(result, v1);
1084		threadAssertNull(t);
1085		a.getAndIncrement();
1086		return inc(v1);
#	Line 1094 | Line 1107 | public class CompletableFutureTest exten
1107		if (!createIncomplete) f.completeExceptionally(ex);
1108		final CompletableFuture<Integer> g = m.handle
1109		(f,
1110	<	(Integer x, Throwable t) -> {
1110	>	(Integer result, Throwable t) -> {
1111		m.checkExecutionMode();
1112	<	threadAssertNull(x);
1112	>	threadAssertNull(result);
1113		threadAssertSame(t, ex);
1114		a.getAndIncrement();
1115		return v1;
#	Line 1123 | Line 1136 | public class CompletableFutureTest exten
1136		if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
1137		final CompletableFuture<Integer> g = m.handle
1138		(f,
1139	<	(Integer x, Throwable t) -> {
1139	>	(Integer result, Throwable t) -> {
1140		m.checkExecutionMode();
1141	<	threadAssertNull(x);
1141	>	threadAssertNull(result);
1142		threadAssertTrue(t instanceof CancellationException);
1143		a.getAndIncrement();
1144		return v1;
#	Line 1138 | Line 1151 | public class CompletableFutureTest exten
1151		}}
1152
1153		/**
1154	<	* handle result completes exceptionally if action does
1154	>	* If a "handle action" throws an exception when triggered by
1155	>	* a normal completion, it completes exceptionally
1156		*/
1157	<	public void testHandle_sourceFailedActionFailed() {
1157	>	public void testHandle_sourceCompletedNormallyActionFailed() {
1158		for (ExecutionMode m : ExecutionMode.values())
1159		for (boolean createIncomplete : new boolean[] { true, false })
1160	+	for (Integer v1 : new Integer[] { 1, null })
1161		{
1162		final CompletableFuture<Integer> f = new CompletableFuture<>();
1163		final AtomicInteger a = new AtomicInteger(0);
1164	<	final CFException ex1 = new CFException();
1165	<	final CFException ex2 = new CFException();
1151	<	if (!createIncomplete) f.completeExceptionally(ex1);
1164	>	final CFException ex = new CFException();
1165	>	if (!createIncomplete) assertTrue(f.complete(v1));
1166		final CompletableFuture<Integer> g = m.handle
1167		(f,
1168	<	(Integer x, Throwable t) -> {
1168	>	(Integer result, Throwable t) -> {
1169		m.checkExecutionMode();
1170	<	threadAssertNull(x);
1171	<	threadAssertSame(ex1, t);
1170	>	threadAssertSame(result, v1);
1171	>	threadAssertNull(t);
1172		a.getAndIncrement();
1173	<	throw ex2;
1173	>	throw ex;
1174		});
1175	<	if (createIncomplete) f.completeExceptionally(ex1);
1175	>	if (createIncomplete) assertTrue(f.complete(v1));
1176
1177	<	checkCompletedWithWrappedException(g, ex2);
1178	<	checkCompletedExceptionally(f, ex1);
1177	>	checkCompletedWithWrappedException(g, ex);
1178	>	checkCompletedNormally(f, v1);
1179		assertEquals(1, a.get());
1180		}}
1181
1182	<	public void testHandle_sourceCompletedNormallyActionFailed() {
1183	<	for (ExecutionMode m : ExecutionMode.values())
1182	>	/**
1183	>	* If a "handle action" throws an exception when triggered by
1184	>	* a source completion that also throws an exception, the action
1185	>	* exception takes precedence (unlike whenComplete)
1186	>	*/
1187	>	public void testHandle_sourceFailedActionFailed() {
1188		for (boolean createIncomplete : new boolean[] { true, false })
1189	<	for (Integer v1 : new Integer[] { 1, null })
1189	>	for (ExecutionMode m : ExecutionMode.values())
1190		{
1173	–	final CompletableFuture<Integer> f = new CompletableFuture<>();
1191		final AtomicInteger a = new AtomicInteger(0);
1192	<	final CFException ex = new CFException();
1193	<	if (!createIncomplete) assertTrue(f.complete(v1));
1192	>	final CFException ex1 = new CFException();
1193	>	final CFException ex2 = new CFException();
1194	>	final CompletableFuture<Integer> f = new CompletableFuture<>();
1195	>
1196	>	if (!createIncomplete) f.completeExceptionally(ex1);
1197		final CompletableFuture<Integer> g = m.handle
1198		(f,
1199	<	(Integer x, Throwable t) -> {
1199	>	(Integer result, Throwable t) -> {
1200		m.checkExecutionMode();
1201	<	threadAssertSame(x, v1);
1202	<	threadAssertNull(t);
1201	>	threadAssertNull(result);
1202	>	threadAssertSame(ex1, t);
1203		a.getAndIncrement();
1204	<	throw ex;
1204	>	throw ex2;
1205		});
1206	<	if (createIncomplete) assertTrue(f.complete(v1));
1206	>	if (createIncomplete) f.completeExceptionally(ex1);
1207
1208	<	checkCompletedWithWrappedException(g, ex);
1209	<	checkCompletedNormally(f, v1);
1208	>	checkCompletedWithWrappedException(g, ex2);
1209	>	checkCompletedExceptionally(f, ex1);
1210		assertEquals(1, a.get());
1211		}}
1212
#	Line 1219 | Line 1239 | public class CompletableFutureTest exten
1239		{
1240		final FailingRunnable r = new FailingRunnable(m);
1241		final CompletableFuture<Void> f = m.runAsync(r);
1242	<	checkCompletedWithWrappedCFException(f);
1242	>	checkCompletedWithWrappedException(f, r.ex);
1243		r.assertInvoked();
1244		}}
1245
1246	+	public void testRunAsync_rejectingExecutor() {
1247	+	CountingRejectingExecutor e = new CountingRejectingExecutor();
1248	+	try {
1249	+	CompletableFuture.runAsync(() -> {}, e);
1250	+	shouldThrow();
1251	+	} catch (Throwable t) {
1252	+	assertSame(e.ex, t);
1253	+	}
1254	+
1255	+	assertEquals(1, e.count.get());
1256	+	}
1257	+
1258		/**
1259		* supplyAsync completes with result of supplier
1260		*/
#	Line 1253 | Line 1285 | public class CompletableFutureTest exten
1285		{
1286		FailingSupplier r = new FailingSupplier(m);
1287		CompletableFuture<Integer> f = m.supplyAsync(r);
1288	<	checkCompletedWithWrappedCFException(f);
1288	>	checkCompletedWithWrappedException(f, r.ex);
1289		r.assertInvoked();
1290		}}
1291
1292	+	public void testSupplyAsync_rejectingExecutor() {
1293	+	CountingRejectingExecutor e = new CountingRejectingExecutor();
1294	+	try {
1295	+	CompletableFuture.supplyAsync(() -> null, e);
1296	+	shouldThrow();
1297	+	} catch (Throwable t) {
1298	+	assertSame(e.ex, t);
1299	+	}
1300	+
1301	+	assertEquals(1, e.count.get());
1302	+	}
1303	+
1304		// seq completion methods
1305
1306		/**
#	Line 1264 | Line 1308 | public class CompletableFutureTest exten
1308		*/
1309		public void testThenRun_normalCompletion() {
1310		for (ExecutionMode m : ExecutionMode.values())
1267	–	for (boolean createIncomplete : new boolean[] { true, false })
1311		for (Integer v1 : new Integer[] { 1, null })
1312		{
1313		final CompletableFuture<Integer> f = new CompletableFuture<>();
1314	<	final Noop r = new Noop(m);
1315	<	if (!createIncomplete) assertTrue(f.complete(v1));
1273	<	final CompletableFuture<Void> g = m.thenRun(f, r);
1274	<	if (createIncomplete) {
1275	<	checkIncomplete(g);
1276	<	assertTrue(f.complete(v1));
1277	<	}
1314	>	final Noop[] rs = new Noop[6];
1315	>	for (int i = 0; i < rs.length; i++) rs[i] = new Noop(m);
1316
1317	<	checkCompletedNormally(g, null);
1317	>	final CompletableFuture<Void> h0 = m.thenRun(f, rs[0]);
1318	>	final CompletableFuture<Void> h1 = m.runAfterBoth(f, f, rs[1]);
1319	>	final CompletableFuture<Void> h2 = m.runAfterEither(f, f, rs[2]);
1320	>	checkIncomplete(h0);
1321	>	checkIncomplete(h1);
1322	>	checkIncomplete(h2);
1323	>	assertTrue(f.complete(v1));
1324	>	final CompletableFuture<Void> h3 = m.thenRun(f, rs[3]);
1325	>	final CompletableFuture<Void> h4 = m.runAfterBoth(f, f, rs[4]);
1326	>	final CompletableFuture<Void> h5 = m.runAfterEither(f, f, rs[5]);
1327	>
1328	>	checkCompletedNormally(h0, null);
1329	>	checkCompletedNormally(h1, null);
1330	>	checkCompletedNormally(h2, null);
1331	>	checkCompletedNormally(h3, null);
1332	>	checkCompletedNormally(h4, null);
1333	>	checkCompletedNormally(h5, null);
1334		checkCompletedNormally(f, v1);
1335	<	r.assertInvoked();
1335	>	for (Noop r : rs) r.assertInvoked();
1336		}}
1337
1338		/**
#	Line 1287 | Line 1341 | public class CompletableFutureTest exten
1341		*/
1342		public void testThenRun_exceptionalCompletion() {
1343		for (ExecutionMode m : ExecutionMode.values())
1290	–	for (boolean createIncomplete : new boolean[] { true, false })
1344		{
1345		final CFException ex = new CFException();
1346		final CompletableFuture<Integer> f = new CompletableFuture<>();
1347	<	final Noop r = new Noop(m);
1348	<	if (!createIncomplete) f.completeExceptionally(ex);
1296	<	final CompletableFuture<Void> g = m.thenRun(f, r);
1297	<	if (createIncomplete) {
1298	<	checkIncomplete(g);
1299	<	f.completeExceptionally(ex);
1300	<	}
1347	>	final Noop[] rs = new Noop[6];
1348	>	for (int i = 0; i < rs.length; i++) rs[i] = new Noop(m);
1349
1350	<	checkCompletedWithWrappedException(g, ex);
1350	>	final CompletableFuture<Void> h0 = m.thenRun(f, rs[0]);
1351	>	final CompletableFuture<Void> h1 = m.runAfterBoth(f, f, rs[1]);
1352	>	final CompletableFuture<Void> h2 = m.runAfterEither(f, f, rs[2]);
1353	>	checkIncomplete(h0);
1354	>	checkIncomplete(h1);
1355	>	checkIncomplete(h2);
1356	>	assertTrue(f.completeExceptionally(ex));
1357	>	final CompletableFuture<Void> h3 = m.thenRun(f, rs[3]);
1358	>	final CompletableFuture<Void> h4 = m.runAfterBoth(f, f, rs[4]);
1359	>	final CompletableFuture<Void> h5 = m.runAfterEither(f, f, rs[5]);
1360	>
1361	>	checkCompletedWithWrappedException(h0, ex);
1362	>	checkCompletedWithWrappedException(h1, ex);
1363	>	checkCompletedWithWrappedException(h2, ex);
1364	>	checkCompletedWithWrappedException(h3, ex);
1365	>	checkCompletedWithWrappedException(h4, ex);
1366	>	checkCompletedWithWrappedException(h5, ex);
1367		checkCompletedExceptionally(f, ex);
1368	<	r.assertNotInvoked();
1368	>	for (Noop r : rs) r.assertNotInvoked();
1369		}}
1370
1371		/**
#	Line 1309 | Line 1373 | public class CompletableFutureTest exten
1373		*/
1374		public void testThenRun_sourceCancelled() {
1375		for (ExecutionMode m : ExecutionMode.values())
1312	–	for (boolean createIncomplete : new boolean[] { true, false })
1376		for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1377		{
1378		final CompletableFuture<Integer> f = new CompletableFuture<>();
1379	<	final Noop r = new Noop(m);
1380	<	if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
1318	<	final CompletableFuture<Void> g = m.thenRun(f, r);
1319	<	if (createIncomplete) {
1320	<	checkIncomplete(g);
1321	<	assertTrue(f.cancel(mayInterruptIfRunning));
1322	<	}
1379	>	final Noop[] rs = new Noop[6];
1380	>	for (int i = 0; i < rs.length; i++) rs[i] = new Noop(m);
1381
1382	<	checkCompletedWithWrappedCancellationException(g);
1382	>	final CompletableFuture<Void> h0 = m.thenRun(f, rs[0]);
1383	>	final CompletableFuture<Void> h1 = m.runAfterBoth(f, f, rs[1]);
1384	>	final CompletableFuture<Void> h2 = m.runAfterEither(f, f, rs[2]);
1385	>	checkIncomplete(h0);
1386	>	checkIncomplete(h1);
1387	>	checkIncomplete(h2);
1388	>	assertTrue(f.cancel(mayInterruptIfRunning));
1389	>	final CompletableFuture<Void> h3 = m.thenRun(f, rs[3]);
1390	>	final CompletableFuture<Void> h4 = m.runAfterBoth(f, f, rs[4]);
1391	>	final CompletableFuture<Void> h5 = m.runAfterEither(f, f, rs[5]);
1392	>
1393	>	checkCompletedWithWrappedCancellationException(h0);
1394	>	checkCompletedWithWrappedCancellationException(h1);
1395	>	checkCompletedWithWrappedCancellationException(h2);
1396	>	checkCompletedWithWrappedCancellationException(h3);
1397	>	checkCompletedWithWrappedCancellationException(h4);
1398	>	checkCompletedWithWrappedCancellationException(h5);
1399		checkCancelled(f);
1400	<	r.assertNotInvoked();
1400	>	for (Noop r : rs) r.assertNotInvoked();
1401		}}
1402
1403		/**
#	Line 1331 | Line 1405 | public class CompletableFutureTest exten
1405		*/
1406		public void testThenRun_actionFailed() {
1407		for (ExecutionMode m : ExecutionMode.values())
1334	–	for (boolean createIncomplete : new boolean[] { true, false })
1408		for (Integer v1 : new Integer[] { 1, null })
1409		{
1410		final CompletableFuture<Integer> f = new CompletableFuture<>();
1411	<	final FailingRunnable r = new FailingRunnable(m);
1412	<	if (!createIncomplete) assertTrue(f.complete(v1));
1340	<	final CompletableFuture<Void> g = m.thenRun(f, r);
1341	<	if (createIncomplete) {
1342	<	checkIncomplete(g);
1343	<	assertTrue(f.complete(v1));
1344	<	}
1411	>	final FailingRunnable[] rs = new FailingRunnable[6];
1412	>	for (int i = 0; i < rs.length; i++) rs[i] = new FailingRunnable(m);
1413
1414	<	checkCompletedWithWrappedCFException(g);
1414	>	final CompletableFuture<Void> h0 = m.thenRun(f, rs[0]);
1415	>	final CompletableFuture<Void> h1 = m.runAfterBoth(f, f, rs[1]);
1416	>	final CompletableFuture<Void> h2 = m.runAfterEither(f, f, rs[2]);
1417	>	assertTrue(f.complete(v1));
1418	>	final CompletableFuture<Void> h3 = m.thenRun(f, rs[3]);
1419	>	final CompletableFuture<Void> h4 = m.runAfterBoth(f, f, rs[4]);
1420	>	final CompletableFuture<Void> h5 = m.runAfterEither(f, f, rs[5]);
1421	>
1422	>	checkCompletedWithWrappedException(h0, rs[0].ex);
1423	>	checkCompletedWithWrappedException(h1, rs[1].ex);
1424	>	checkCompletedWithWrappedException(h2, rs[2].ex);
1425	>	checkCompletedWithWrappedException(h3, rs[3].ex);
1426	>	checkCompletedWithWrappedException(h4, rs[4].ex);
1427	>	checkCompletedWithWrappedException(h5, rs[5].ex);
1428		checkCompletedNormally(f, v1);
1429		}}
1430
#	Line 1352 | Line 1433 | public class CompletableFutureTest exten
1433		*/
1434		public void testThenApply_normalCompletion() {
1435		for (ExecutionMode m : ExecutionMode.values())
1355	–	for (boolean createIncomplete : new boolean[] { true, false })
1436		for (Integer v1 : new Integer[] { 1, null })
1437		{
1438		final CompletableFuture<Integer> f = new CompletableFuture<>();
1439	<	final IncFunction r = new IncFunction(m);
1440	<	if (!createIncomplete) assertTrue(f.complete(v1));
1361	<	final CompletableFuture<Integer> g = m.thenApply(f, r);
1362	<	if (createIncomplete) {
1363	<	checkIncomplete(g);
1364	<	assertTrue(f.complete(v1));
1365	<	}
1439	>	final IncFunction[] rs = new IncFunction[4];
1440	>	for (int i = 0; i < rs.length; i++) rs[i] = new IncFunction(m);
1441
1442	<	checkCompletedNormally(g, inc(v1));
1442	>	final CompletableFuture<Integer> h0 = m.thenApply(f, rs[0]);
1443	>	final CompletableFuture<Integer> h1 = m.applyToEither(f, f, rs[1]);
1444	>	checkIncomplete(h0);
1445	>	checkIncomplete(h1);
1446	>	assertTrue(f.complete(v1));
1447	>	final CompletableFuture<Integer> h2 = m.thenApply(f, rs[2]);
1448	>	final CompletableFuture<Integer> h3 = m.applyToEither(f, f, rs[3]);
1449	>
1450	>	checkCompletedNormally(h0, inc(v1));
1451	>	checkCompletedNormally(h1, inc(v1));
1452	>	checkCompletedNormally(h2, inc(v1));
1453	>	checkCompletedNormally(h3, inc(v1));
1454		checkCompletedNormally(f, v1);
1455	<	r.assertValue(inc(v1));
1455	>	for (IncFunction r : rs) r.assertValue(inc(v1));
1456		}}
1457
1458		/**
#	Line 1375 | Line 1461 | public class CompletableFutureTest exten
1461		*/
1462		public void testThenApply_exceptionalCompletion() {
1463		for (ExecutionMode m : ExecutionMode.values())
1378	–	for (boolean createIncomplete : new boolean[] { true, false })
1464		{
1465		final CFException ex = new CFException();
1466		final CompletableFuture<Integer> f = new CompletableFuture<>();
1467	<	final IncFunction r = new IncFunction(m);
1468	<	if (!createIncomplete) f.completeExceptionally(ex);
1384	<	final CompletableFuture<Integer> g = m.thenApply(f, r);
1385	<	if (createIncomplete) {
1386	<	checkIncomplete(g);
1387	<	f.completeExceptionally(ex);
1388	<	}
1467	>	final IncFunction[] rs = new IncFunction[4];
1468	>	for (int i = 0; i < rs.length; i++) rs[i] = new IncFunction(m);
1469
1470	<	checkCompletedWithWrappedException(g, ex);
1470	>	final CompletableFuture<Integer> h0 = m.thenApply(f, rs[0]);
1471	>	final CompletableFuture<Integer> h1 = m.applyToEither(f, f, rs[1]);
1472	>	assertTrue(f.completeExceptionally(ex));
1473	>	final CompletableFuture<Integer> h2 = m.thenApply(f, rs[2]);
1474	>	final CompletableFuture<Integer> h3 = m.applyToEither(f, f, rs[3]);
1475	>
1476	>	checkCompletedWithWrappedException(h0, ex);
1477	>	checkCompletedWithWrappedException(h1, ex);
1478	>	checkCompletedWithWrappedException(h2, ex);
1479	>	checkCompletedWithWrappedException(h3, ex);
1480		checkCompletedExceptionally(f, ex);
1481	<	r.assertNotInvoked();
1481	>	for (IncFunction r : rs) r.assertNotInvoked();
1482		}}
1483
1484		/**
#	Line 1397 | Line 1486 | public class CompletableFutureTest exten
1486		*/
1487		public void testThenApply_sourceCancelled() {
1488		for (ExecutionMode m : ExecutionMode.values())
1400	–	for (boolean createIncomplete : new boolean[] { true, false })
1489		for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1490		{
1491		final CompletableFuture<Integer> f = new CompletableFuture<>();
1492	<	final IncFunction r = new IncFunction(m);
1493	<	if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
1406	<	final CompletableFuture<Integer> g = m.thenApply(f, r);
1407	<	if (createIncomplete) {
1408	<	checkIncomplete(g);
1409	<	assertTrue(f.cancel(mayInterruptIfRunning));
1410	<	}
1492	>	final IncFunction[] rs = new IncFunction[4];
1493	>	for (int i = 0; i < rs.length; i++) rs[i] = new IncFunction(m);
1494
1495	<	checkCompletedWithWrappedCancellationException(g);
1495	>	final CompletableFuture<Integer> h0 = m.thenApply(f, rs[0]);
1496	>	final CompletableFuture<Integer> h1 = m.applyToEither(f, f, rs[1]);
1497	>	assertTrue(f.cancel(mayInterruptIfRunning));
1498	>	final CompletableFuture<Integer> h2 = m.thenApply(f, rs[2]);
1499	>	final CompletableFuture<Integer> h3 = m.applyToEither(f, f, rs[3]);
1500	>
1501	>	checkCompletedWithWrappedCancellationException(h0);
1502	>	checkCompletedWithWrappedCancellationException(h1);
1503	>	checkCompletedWithWrappedCancellationException(h2);
1504	>	checkCompletedWithWrappedCancellationException(h3);
1505		checkCancelled(f);
1506	<	r.assertNotInvoked();
1506	>	for (IncFunction r : rs) r.assertNotInvoked();
1507		}}
1508
1509		/**
#	Line 1419 | Line 1511 | public class CompletableFutureTest exten
1511		*/
1512		public void testThenApply_actionFailed() {
1513		for (ExecutionMode m : ExecutionMode.values())
1422	–	for (boolean createIncomplete : new boolean[] { true, false })
1514		for (Integer v1 : new Integer[] { 1, null })
1515		{
1516		final CompletableFuture<Integer> f = new CompletableFuture<>();
1517	<	final FailingFunction r = new FailingFunction(m);
1518	<	if (!createIncomplete) assertTrue(f.complete(v1));
1519	<	final CompletableFuture<Integer> g = m.thenApply(f, r);
1520	<	if (createIncomplete) {
1521	<	checkIncomplete(g);
1522	<	assertTrue(f.complete(v1));
1523	<	}
1517	>	final FailingFunction[] rs = new FailingFunction[4];
1518	>	for (int i = 0; i < rs.length; i++) rs[i] = new FailingFunction(m);
1519	>
1520	>	final CompletableFuture<Integer> h0 = m.thenApply(f, rs[0]);
1521	>	final CompletableFuture<Integer> h1 = m.applyToEither(f, f, rs[1]);
1522	>	assertTrue(f.complete(v1));
1523	>	final CompletableFuture<Integer> h2 = m.thenApply(f, rs[2]);
1524	>	final CompletableFuture<Integer> h3 = m.applyToEither(f, f, rs[3]);
1525
1526	<	checkCompletedWithWrappedCFException(g);
1526	>	checkCompletedWithWrappedException(h0, rs[0].ex);
1527	>	checkCompletedWithWrappedException(h1, rs[1].ex);
1528	>	checkCompletedWithWrappedException(h2, rs[2].ex);
1529	>	checkCompletedWithWrappedException(h3, rs[3].ex);
1530		checkCompletedNormally(f, v1);
1531		}}
1532
#	Line 1440 | Line 1535 | public class CompletableFutureTest exten
1535		*/
1536		public void testThenAccept_normalCompletion() {
1537		for (ExecutionMode m : ExecutionMode.values())
1443	–	for (boolean createIncomplete : new boolean[] { true, false })
1538		for (Integer v1 : new Integer[] { 1, null })
1539		{
1540		final CompletableFuture<Integer> f = new CompletableFuture<>();
1541	<	final NoopConsumer r = new NoopConsumer(m);
1542	<	if (!createIncomplete) assertTrue(f.complete(v1));
1449	<	final CompletableFuture<Void> g = m.thenAccept(f, r);
1450	<	if (createIncomplete) {
1451	<	checkIncomplete(g);
1452	<	assertTrue(f.complete(v1));
1453	<	}
1541	>	final NoopConsumer[] rs = new NoopConsumer[4];
1542	>	for (int i = 0; i < rs.length; i++) rs[i] = new NoopConsumer(m);
1543
1544	<	checkCompletedNormally(g, null);
1545	<	r.assertValue(v1);
1544	>	final CompletableFuture<Void> h0 = m.thenAccept(f, rs[0]);
1545	>	final CompletableFuture<Void> h1 = m.acceptEither(f, f, rs[1]);
1546	>	checkIncomplete(h0);
1547	>	checkIncomplete(h1);
1548	>	assertTrue(f.complete(v1));
1549	>	final CompletableFuture<Void> h2 = m.thenAccept(f, rs[2]);
1550	>	final CompletableFuture<Void> h3 = m.acceptEither(f, f, rs[3]);
1551	>
1552	>	checkCompletedNormally(h0, null);
1553	>	checkCompletedNormally(h1, null);
1554	>	checkCompletedNormally(h2, null);
1555	>	checkCompletedNormally(h3, null);
1556		checkCompletedNormally(f, v1);
1557	+	for (NoopConsumer r : rs) r.assertValue(v1);
1558		}}
1559
1560		/**
#	Line 1463 | Line 1563 | public class CompletableFutureTest exten
1563		*/
1564		public void testThenAccept_exceptionalCompletion() {
1565		for (ExecutionMode m : ExecutionMode.values())
1466	–	for (boolean createIncomplete : new boolean[] { true, false })
1566		{
1567		final CFException ex = new CFException();
1568		final CompletableFuture<Integer> f = new CompletableFuture<>();
1569	<	final NoopConsumer r = new NoopConsumer(m);
1570	<	if (!createIncomplete) f.completeExceptionally(ex);
1472	<	final CompletableFuture<Void> g = m.thenAccept(f, r);
1473	<	if (createIncomplete) {
1474	<	checkIncomplete(g);
1475	<	f.completeExceptionally(ex);
1476	<	}
1569	>	final NoopConsumer[] rs = new NoopConsumer[4];
1570	>	for (int i = 0; i < rs.length; i++) rs[i] = new NoopConsumer(m);
1571
1572	<	checkCompletedWithWrappedException(g, ex);
1572	>	final CompletableFuture<Void> h0 = m.thenAccept(f, rs[0]);
1573	>	final CompletableFuture<Void> h1 = m.acceptEither(f, f, rs[1]);
1574	>	assertTrue(f.completeExceptionally(ex));
1575	>	final CompletableFuture<Void> h2 = m.thenAccept(f, rs[2]);
1576	>	final CompletableFuture<Void> h3 = m.acceptEither(f, f, rs[3]);
1577	>
1578	>	checkCompletedWithWrappedException(h0, ex);
1579	>	checkCompletedWithWrappedException(h1, ex);
1580	>	checkCompletedWithWrappedException(h2, ex);
1581	>	checkCompletedWithWrappedException(h3, ex);
1582		checkCompletedExceptionally(f, ex);
1583	<	r.assertNotInvoked();
1583	>	for (NoopConsumer r : rs) r.assertNotInvoked();
1584		}}
1585
1586		/**
#	Line 1485 | Line 1588 | public class CompletableFutureTest exten
1588		*/
1589		public void testThenAccept_sourceCancelled() {
1590		for (ExecutionMode m : ExecutionMode.values())
1488	–	for (boolean createIncomplete : new boolean[] { true, false })
1591		for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1592		{
1593		final CompletableFuture<Integer> f = new CompletableFuture<>();
1594	<	final NoopConsumer r = new NoopConsumer(m);
1595	<	if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
1494	<	final CompletableFuture<Void> g = m.thenAccept(f, r);
1495	<	if (createIncomplete) {
1496	<	checkIncomplete(g);
1497	<	assertTrue(f.cancel(mayInterruptIfRunning));
1498	<	}
1594	>	final NoopConsumer[] rs = new NoopConsumer[4];
1595	>	for (int i = 0; i < rs.length; i++) rs[i] = new NoopConsumer(m);
1596
1597	<	checkCompletedWithWrappedCancellationException(g);
1597	>	final CompletableFuture<Void> h0 = m.thenAccept(f, rs[0]);
1598	>	final CompletableFuture<Void> h1 = m.acceptEither(f, f, rs[1]);
1599	>	assertTrue(f.cancel(mayInterruptIfRunning));
1600	>	final CompletableFuture<Void> h2 = m.thenAccept(f, rs[2]);
1601	>	final CompletableFuture<Void> h3 = m.acceptEither(f, f, rs[3]);
1602	>
1603	>	checkCompletedWithWrappedCancellationException(h0);
1604	>	checkCompletedWithWrappedCancellationException(h1);
1605	>	checkCompletedWithWrappedCancellationException(h2);
1606	>	checkCompletedWithWrappedCancellationException(h3);
1607		checkCancelled(f);
1608	<	r.assertNotInvoked();
1608	>	for (NoopConsumer r : rs) r.assertNotInvoked();
1609		}}
1610
1611		/**
#	Line 1507 | Line 1613 | public class CompletableFutureTest exten
1613		*/
1614		public void testThenAccept_actionFailed() {
1615		for (ExecutionMode m : ExecutionMode.values())
1510	–	for (boolean createIncomplete : new boolean[] { true, false })
1616		for (Integer v1 : new Integer[] { 1, null })
1617		{
1618		final CompletableFuture<Integer> f = new CompletableFuture<>();
1619	<	final FailingConsumer r = new FailingConsumer(m);
1620	<	if (!createIncomplete) f.complete(v1);
1516	<	final CompletableFuture<Void> g = m.thenAccept(f, r);
1517	<	if (createIncomplete) {
1518	<	checkIncomplete(g);
1519	<	f.complete(v1);
1520	<	}
1619	>	final FailingConsumer[] rs = new FailingConsumer[4];
1620	>	for (int i = 0; i < rs.length; i++) rs[i] = new FailingConsumer(m);
1621
1622	<	checkCompletedWithWrappedCFException(g);
1622	>	final CompletableFuture<Void> h0 = m.thenAccept(f, rs[0]);
1623	>	final CompletableFuture<Void> h1 = m.acceptEither(f, f, rs[1]);
1624	>	assertTrue(f.complete(v1));
1625	>	final CompletableFuture<Void> h2 = m.thenAccept(f, rs[2]);
1626	>	final CompletableFuture<Void> h3 = m.acceptEither(f, f, rs[3]);
1627	>
1628	>	checkCompletedWithWrappedException(h0, rs[0].ex);
1629	>	checkCompletedWithWrappedException(h1, rs[1].ex);
1630	>	checkCompletedWithWrappedException(h2, rs[2].ex);
1631	>	checkCompletedWithWrappedException(h3, rs[3].ex);
1632		checkCompletedNormally(f, v1);
1633		}}
1634
#	Line 1535 | Line 1644 | public class CompletableFutureTest exten
1644		{
1645		final CompletableFuture<Integer> f = new CompletableFuture<>();
1646		final CompletableFuture<Integer> g = new CompletableFuture<>();
1647	<	final SubtractFunction r1 = new SubtractFunction(m);
1648	<	final SubtractFunction r2 = new SubtractFunction(m);
1540	<	final SubtractFunction r3 = new SubtractFunction(m);
1647	>	final SubtractFunction[] rs = new SubtractFunction[6];
1648	>	for (int i = 0; i < rs.length; i++) rs[i] = new SubtractFunction(m);
1649
1650		final CompletableFuture<Integer> fst =  fFirst ? f : g;
1651		final CompletableFuture<Integer> snd = !fFirst ? f : g;
1652		final Integer w1 =  fFirst ? v1 : v2;
1653		final Integer w2 = !fFirst ? v1 : v2;
1654
1655	<	final CompletableFuture<Integer> h1 = m.thenCombine(f, g, r1);
1655	>	final CompletableFuture<Integer> h0 = m.thenCombine(f, g, rs[0]);
1656	>	final CompletableFuture<Integer> h1 = m.thenCombine(fst, fst, rs[1]);
1657		assertTrue(fst.complete(w1));
1658	<	final CompletableFuture<Integer> h2 = m.thenCombine(f, g, r2);
1659	<	checkIncomplete(h1);
1660	<	checkIncomplete(h2);
1661	<	r1.assertNotInvoked();
1662	<	r2.assertNotInvoked();
1658	>	final CompletableFuture<Integer> h2 = m.thenCombine(f, g, rs[2]);
1659	>	final CompletableFuture<Integer> h3 = m.thenCombine(fst, fst, rs[3]);
1660	>	checkIncomplete(h0); rs[0].assertNotInvoked();
1661	>	checkIncomplete(h2); rs[2].assertNotInvoked();
1662	>	checkCompletedNormally(h1, subtract(w1, w1));
1663	>	checkCompletedNormally(h3, subtract(w1, w1));
1664	>	rs[1].assertValue(subtract(w1, w1));
1665	>	rs[3].assertValue(subtract(w1, w1));
1666		assertTrue(snd.complete(w2));
1667	<	final CompletableFuture<Integer> h3 = m.thenCombine(f, g, r3);
1667	>	final CompletableFuture<Integer> h4 = m.thenCombine(f, g, rs[4]);
1668
1669	<	checkCompletedNormally(h1, subtract(v1, v2));
1669	>	checkCompletedNormally(h0, subtract(v1, v2));
1670		checkCompletedNormally(h2, subtract(v1, v2));
1671	<	checkCompletedNormally(h3, subtract(v1, v2));
1672	<	r1.assertValue(subtract(v1, v2));
1673	<	r2.assertValue(subtract(v1, v2));
1674	<	r3.assertValue(subtract(v1, v2));
1671	>	checkCompletedNormally(h4, subtract(v1, v2));
1672	>	rs[0].assertValue(subtract(v1, v2));
1673	>	rs[2].assertValue(subtract(v1, v2));
1674	>	rs[4].assertValue(subtract(v1, v2));
1675	>
1676		checkCompletedNormally(f, v1);
1677		checkCompletedNormally(g, v2);
1678		}}
#	Line 1677 | Line 1790 | public class CompletableFutureTest exten
1790		assertTrue(snd.complete(w2));
1791		final CompletableFuture<Integer> h3 = m.thenCombine(f, g, r3);
1792
1793	<	checkCompletedWithWrappedCFException(h1);
1794	<	checkCompletedWithWrappedCFException(h2);
1795	<	checkCompletedWithWrappedCFException(h3);
1793	>	checkCompletedWithWrappedException(h1, r1.ex);
1794	>	checkCompletedWithWrappedException(h2, r2.ex);
1795	>	checkCompletedWithWrappedException(h3, r3.ex);
1796	>	r1.assertInvoked();
1797	>	r2.assertInvoked();
1798	>	r3.assertInvoked();
1799		checkCompletedNormally(f, v1);
1800		checkCompletedNormally(g, v2);
1801		}}
#	Line 1690 | Line 1806 | public class CompletableFutureTest exten
1806		*/
1807		public void testThenAcceptBoth_normalCompletion() {
1808		for (ExecutionMode m : ExecutionMode.values())
1693	–	for (boolean createIncomplete : new boolean[] { true, false })
1809		for (boolean fFirst : new boolean[] { true, false })
1810		for (Integer v1 : new Integer[] { 1, null })
1811		for (Integer v2 : new Integer[] { 2, null })
1812		{
1813		final CompletableFuture<Integer> f = new CompletableFuture<>();
1814		final CompletableFuture<Integer> g = new CompletableFuture<>();
1815	<	final SubtractAction r = new SubtractAction(m);
1815	>	final SubtractAction r1 = new SubtractAction(m);
1816	>	final SubtractAction r2 = new SubtractAction(m);
1817	>	final SubtractAction r3 = new SubtractAction(m);
1818
1819	<	assertTrue(fFirst ? f.complete(v1) : g.complete(v2));
1820	<	if (!createIncomplete)
1821	<	assertTrue(!fFirst ? f.complete(v1) : g.complete(v2));
1822	<	final CompletableFuture<Void> h = m.thenAcceptBoth(f, g, r);
1706	<	if (createIncomplete) {
1707	<	checkIncomplete(h);
1708	<	r.assertNotInvoked();
1709	<	assertTrue(!fFirst ? f.complete(v1) : g.complete(v2));
1710	<	}
1819	>	final CompletableFuture<Integer> fst =  fFirst ? f : g;
1820	>	final CompletableFuture<Integer> snd = !fFirst ? f : g;
1821	>	final Integer w1 =  fFirst ? v1 : v2;
1822	>	final Integer w2 = !fFirst ? v1 : v2;
1823
1824	<	checkCompletedNormally(h, null);
1825	<	r.assertValue(subtract(v1, v2));
1824	>	final CompletableFuture<Void> h1 = m.thenAcceptBoth(f, g, r1);
1825	>	assertTrue(fst.complete(w1));
1826	>	final CompletableFuture<Void> h2 = m.thenAcceptBoth(f, g, r2);
1827	>	checkIncomplete(h1);
1828	>	checkIncomplete(h2);
1829	>	r1.assertNotInvoked();
1830	>	r2.assertNotInvoked();
1831	>	assertTrue(snd.complete(w2));
1832	>	final CompletableFuture<Void> h3 = m.thenAcceptBoth(f, g, r3);
1833	>
1834	>	checkCompletedNormally(h1, null);
1835	>	checkCompletedNormally(h2, null);
1836	>	checkCompletedNormally(h3, null);
1837	>	r1.assertValue(subtract(v1, v2));
1838	>	r2.assertValue(subtract(v1, v2));
1839	>	r3.assertValue(subtract(v1, v2));
1840		checkCompletedNormally(f, v1);
1841		checkCompletedNormally(g, v2);
1842		}}
#	Line 1719 | Line 1845 | public class CompletableFutureTest exten
1845		* thenAcceptBoth result completes exceptionally after exceptional
1846		* completion of either source
1847		*/
1848	<	public void testThenAcceptBoth_exceptionalCompletion() {
1848	>	public void testThenAcceptBoth_exceptionalCompletion() throws Throwable {
1849		for (ExecutionMode m : ExecutionMode.values())
1724	–	for (boolean createIncomplete : new boolean[] { true, false })
1850		for (boolean fFirst : new boolean[] { true, false })
1851	+	for (boolean failFirst : new boolean[] { true, false })
1852		for (Integer v1 : new Integer[] { 1, null })
1853		{
1854		final CompletableFuture<Integer> f = new CompletableFuture<>();
1855		final CompletableFuture<Integer> g = new CompletableFuture<>();
1856		final CFException ex = new CFException();
1857	<	final SubtractAction r = new SubtractAction(m);
1857	>	final SubtractAction r1 = new SubtractAction(m);
1858	>	final SubtractAction r2 = new SubtractAction(m);
1859	>	final SubtractAction r3 = new SubtractAction(m);
1860
1861	<	assertTrue((fFirst ? f : g).complete(v1));
1862	<	if (!createIncomplete)
1863	<	assertTrue((!fFirst ? f : g).completeExceptionally(ex));
1864	<	final CompletableFuture<Void> h = m.thenAcceptBoth(f, g, r);
1865	<	if (createIncomplete) {
1866	<	checkIncomplete(h);
1867	<	assertTrue((!fFirst ? f : g).completeExceptionally(ex));
1868	<	}
1861	>	final CompletableFuture<Integer> fst =  fFirst ? f : g;
1862	>	final CompletableFuture<Integer> snd = !fFirst ? f : g;
1863	>	final Callable<Boolean> complete1 = failFirst ?
1864	>	() -> fst.completeExceptionally(ex) :
1865	>	() -> fst.complete(v1);
1866	>	final Callable<Boolean> complete2 = failFirst ?
1867	>	() -> snd.complete(v1) :
1868	>	() -> snd.completeExceptionally(ex);
1869
1870	<	checkCompletedWithWrappedException(h, ex);
1871	<	r.assertNotInvoked();
1872	<	checkCompletedNormally(fFirst ? f : g, v1);
1873	<	checkCompletedExceptionally(!fFirst ? f : g, ex);
1870	>	final CompletableFuture<Void> h1 = m.thenAcceptBoth(f, g, r1);
1871	>	assertTrue(complete1.call());
1872	>	final CompletableFuture<Void> h2 = m.thenAcceptBoth(f, g, r2);
1873	>	checkIncomplete(h1);
1874	>	checkIncomplete(h2);
1875	>	assertTrue(complete2.call());
1876	>	final CompletableFuture<Void> h3 = m.thenAcceptBoth(f, g, r3);
1877	>
1878	>	checkCompletedWithWrappedException(h1, ex);
1879	>	checkCompletedWithWrappedException(h2, ex);
1880	>	checkCompletedWithWrappedException(h3, ex);
1881	>	r1.assertNotInvoked();
1882	>	r2.assertNotInvoked();
1883	>	r3.assertNotInvoked();
1884	>	checkCompletedNormally(failFirst ? snd : fst, v1);
1885	>	checkCompletedExceptionally(failFirst ? fst : snd, ex);
1886		}}
1887
1888		/**
1889		* thenAcceptBoth result completes exceptionally if either source cancelled
1890		*/
1891	<	public void testThenAcceptBoth_sourceCancelled() {
1891	>	public void testThenAcceptBoth_sourceCancelled() throws Throwable {
1892		for (ExecutionMode m : ExecutionMode.values())
1893		for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1754	–	for (boolean createIncomplete : new boolean[] { true, false })
1894		for (boolean fFirst : new boolean[] { true, false })
1895	+	for (boolean failFirst : new boolean[] { true, false })
1896		for (Integer v1 : new Integer[] { 1, null })
1897		{
1898		final CompletableFuture<Integer> f = new CompletableFuture<>();
1899		final CompletableFuture<Integer> g = new CompletableFuture<>();
1900	<	final SubtractAction r = new SubtractAction(m);
1900	>	final SubtractAction r1 = new SubtractAction(m);
1901	>	final SubtractAction r2 = new SubtractAction(m);
1902	>	final SubtractAction r3 = new SubtractAction(m);
1903
1904	<	assertTrue((fFirst ? f : g).complete(v1));
1905	<	if (!createIncomplete)
1906	<	assertTrue((!fFirst ? f : g).cancel(mayInterruptIfRunning));
1907	<	final CompletableFuture<Void> h = m.thenAcceptBoth(f, g, r);
1908	<	if (createIncomplete) {
1909	<	checkIncomplete(h);
1910	<	assertTrue((!fFirst ? f : g).cancel(mayInterruptIfRunning));
1911	<	}
1904	>	final CompletableFuture<Integer> fst =  fFirst ? f : g;
1905	>	final CompletableFuture<Integer> snd = !fFirst ? f : g;
1906	>	final Callable<Boolean> complete1 = failFirst ?
1907	>	() -> fst.cancel(mayInterruptIfRunning) :
1908	>	() -> fst.complete(v1);
1909	>	final Callable<Boolean> complete2 = failFirst ?
1910	>	() -> snd.complete(v1) :
1911	>	() -> snd.cancel(mayInterruptIfRunning);
1912
1913	<	checkCompletedWithWrappedCancellationException(h);
1914	<	checkCancelled(!fFirst ? f : g);
1915	<	r.assertNotInvoked();
1916	<	checkCompletedNormally(fFirst ? f : g, v1);
1913	>	final CompletableFuture<Void> h1 = m.thenAcceptBoth(f, g, r1);
1914	>	assertTrue(complete1.call());
1915	>	final CompletableFuture<Void> h2 = m.thenAcceptBoth(f, g, r2);
1916	>	checkIncomplete(h1);
1917	>	checkIncomplete(h2);
1918	>	assertTrue(complete2.call());
1919	>	final CompletableFuture<Void> h3 = m.thenAcceptBoth(f, g, r3);
1920	>
1921	>	checkCompletedWithWrappedCancellationException(h1);
1922	>	checkCompletedWithWrappedCancellationException(h2);
1923	>	checkCompletedWithWrappedCancellationException(h3);
1924	>	r1.assertNotInvoked();
1925	>	r2.assertNotInvoked();
1926	>	r3.assertNotInvoked();
1927	>	checkCompletedNormally(failFirst ? snd : fst, v1);
1928	>	checkCancelled(failFirst ? fst : snd);
1929		}}
1930
1931		/**
#	Line 1785 | Line 1939 | public class CompletableFutureTest exten
1939		{
1940		final CompletableFuture<Integer> f = new CompletableFuture<>();
1941		final CompletableFuture<Integer> g = new CompletableFuture<>();
1942	<	final FailingBiConsumer r = new FailingBiConsumer(m);
1943	<	final CompletableFuture<Void> h = m.thenAcceptBoth(f, g, r);
1942	>	final FailingBiConsumer r1 = new FailingBiConsumer(m);
1943	>	final FailingBiConsumer r2 = new FailingBiConsumer(m);
1944	>	final FailingBiConsumer r3 = new FailingBiConsumer(m);
1945	>
1946	>	final CompletableFuture<Integer> fst =  fFirst ? f : g;
1947	>	final CompletableFuture<Integer> snd = !fFirst ? f : g;
1948	>	final Integer w1 =  fFirst ? v1 : v2;
1949	>	final Integer w2 = !fFirst ? v1 : v2;
1950
1951	<	assertTrue(fFirst ? f.complete(v1) : g.complete(v2));
1952	<	assertTrue(!fFirst ? f.complete(v1) : g.complete(v2));
1951	>	final CompletableFuture<Void> h1 = m.thenAcceptBoth(f, g, r1);
1952	>	assertTrue(fst.complete(w1));
1953	>	final CompletableFuture<Void> h2 = m.thenAcceptBoth(f, g, r2);
1954	>	assertTrue(snd.complete(w2));
1955	>	final CompletableFuture<Void> h3 = m.thenAcceptBoth(f, g, r3);
1956
1957	<	checkCompletedWithWrappedCFException(h);
1957	>	checkCompletedWithWrappedException(h1, r1.ex);
1958	>	checkCompletedWithWrappedException(h2, r2.ex);
1959	>	checkCompletedWithWrappedException(h3, r3.ex);
1960	>	r1.assertInvoked();
1961	>	r2.assertInvoked();
1962	>	r3.assertInvoked();
1963		checkCompletedNormally(f, v1);
1964		checkCompletedNormally(g, v2);
1965		}}
#	Line 1802 | Line 1970 | public class CompletableFutureTest exten
1970		*/
1971		public void testRunAfterBoth_normalCompletion() {
1972		for (ExecutionMode m : ExecutionMode.values())
1805	–	for (boolean createIncomplete : new boolean[] { true, false })
1973		for (boolean fFirst : new boolean[] { true, false })
1974		for (Integer v1 : new Integer[] { 1, null })
1975		for (Integer v2 : new Integer[] { 2, null })
1976		{
1977		final CompletableFuture<Integer> f = new CompletableFuture<>();
1978		final CompletableFuture<Integer> g = new CompletableFuture<>();
1979	<	final Noop r = new Noop(m);
1979	>	final Noop r1 = new Noop(m);
1980	>	final Noop r2 = new Noop(m);
1981	>	final Noop r3 = new Noop(m);
1982
1983	<	assertTrue(fFirst ? f.complete(v1) : g.complete(v2));
1984	<	if (!createIncomplete)
1985	<	assertTrue(!fFirst ? f.complete(v1) : g.complete(v2));
1986	<	final CompletableFuture<Void> h = m.runAfterBoth(f, g, r);
1818	<	if (createIncomplete) {
1819	<	checkIncomplete(h);
1820	<	r.assertNotInvoked();
1821	<	assertTrue(!fFirst ? f.complete(v1) : g.complete(v2));
1822	<	}
1983	>	final CompletableFuture<Integer> fst =  fFirst ? f : g;
1984	>	final CompletableFuture<Integer> snd = !fFirst ? f : g;
1985	>	final Integer w1 =  fFirst ? v1 : v2;
1986	>	final Integer w2 = !fFirst ? v1 : v2;
1987
1988	<	checkCompletedNormally(h, null);
1989	<	r.assertInvoked();
1988	>	final CompletableFuture<Void> h1 = m.runAfterBoth(f, g, r1);
1989	>	assertTrue(fst.complete(w1));
1990	>	final CompletableFuture<Void> h2 = m.runAfterBoth(f, g, r2);
1991	>	checkIncomplete(h1);
1992	>	checkIncomplete(h2);
1993	>	r1.assertNotInvoked();
1994	>	r2.assertNotInvoked();
1995	>	assertTrue(snd.complete(w2));
1996	>	final CompletableFuture<Void> h3 = m.runAfterBoth(f, g, r3);
1997	>
1998	>	checkCompletedNormally(h1, null);
1999	>	checkCompletedNormally(h2, null);
2000	>	checkCompletedNormally(h3, null);
2001	>	r1.assertInvoked();
2002	>	r2.assertInvoked();
2003	>	r3.assertInvoked();
2004		checkCompletedNormally(f, v1);
2005		checkCompletedNormally(g, v2);
2006		}}
#	Line 1831 | Line 2009 | public class CompletableFutureTest exten
2009		* runAfterBoth result completes exceptionally after exceptional
2010		* completion of either source
2011		*/
2012	<	public void testRunAfterBoth_exceptionalCompletion() {
2012	>	public void testRunAfterBoth_exceptionalCompletion() throws Throwable {
2013		for (ExecutionMode m : ExecutionMode.values())
1836	–	for (boolean createIncomplete : new boolean[] { true, false })
2014		for (boolean fFirst : new boolean[] { true, false })
2015	+	for (boolean failFirst : new boolean[] { true, false })
2016		for (Integer v1 : new Integer[] { 1, null })
2017		{
2018		final CompletableFuture<Integer> f = new CompletableFuture<>();
2019		final CompletableFuture<Integer> g = new CompletableFuture<>();
2020		final CFException ex = new CFException();
2021	<	final Noop r = new Noop(m);
2021	>	final Noop r1 = new Noop(m);
2022	>	final Noop r2 = new Noop(m);
2023	>	final Noop r3 = new Noop(m);
2024
2025	<	assertTrue((fFirst ? f : g).complete(v1));
2026	<	if (!createIncomplete)
2027	<	assertTrue((!fFirst ? f : g).completeExceptionally(ex));
2028	<	final CompletableFuture<Void> h = m.runAfterBoth(f, g, r);
2029	<	if (createIncomplete) {
2030	<	checkIncomplete(h);
2031	<	assertTrue((!fFirst ? f : g).completeExceptionally(ex));
2032	<	}
2025	>	final CompletableFuture<Integer> fst =  fFirst ? f : g;
2026	>	final CompletableFuture<Integer> snd = !fFirst ? f : g;
2027	>	final Callable<Boolean> complete1 = failFirst ?
2028	>	() -> fst.completeExceptionally(ex) :
2029	>	() -> fst.complete(v1);
2030	>	final Callable<Boolean> complete2 = failFirst ?
2031	>	() -> snd.complete(v1) :
2032	>	() -> snd.completeExceptionally(ex);
2033
2034	<	checkCompletedWithWrappedException(h, ex);
2035	<	r.assertNotInvoked();
2036	<	checkCompletedNormally(fFirst ? f : g, v1);
2037	<	checkCompletedExceptionally(!fFirst ? f : g, ex);
2034	>	final CompletableFuture<Void> h1 = m.runAfterBoth(f, g, r1);
2035	>	assertTrue(complete1.call());
2036	>	final CompletableFuture<Void> h2 = m.runAfterBoth(f, g, r2);
2037	>	checkIncomplete(h1);
2038	>	checkIncomplete(h2);
2039	>	assertTrue(complete2.call());
2040	>	final CompletableFuture<Void> h3 = m.runAfterBoth(f, g, r3);
2041	>
2042	>	checkCompletedWithWrappedException(h1, ex);
2043	>	checkCompletedWithWrappedException(h2, ex);
2044	>	checkCompletedWithWrappedException(h3, ex);
2045	>	r1.assertNotInvoked();
2046	>	r2.assertNotInvoked();
2047	>	r3.assertNotInvoked();
2048	>	checkCompletedNormally(failFirst ? snd : fst, v1);
2049	>	checkCompletedExceptionally(failFirst ? fst : snd, ex);
2050		}}
2051
2052		/**
2053		* runAfterBoth result completes exceptionally if either source cancelled
2054		*/
2055	<	public void testRunAfterBoth_sourceCancelled() {
2055	>	public void testRunAfterBoth_sourceCancelled() throws Throwable {
2056		for (ExecutionMode m : ExecutionMode.values())
2057		for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1866	–	for (boolean createIncomplete : new boolean[] { true, false })
2058		for (boolean fFirst : new boolean[] { true, false })
2059	+	for (boolean failFirst : new boolean[] { true, false })
2060		for (Integer v1 : new Integer[] { 1, null })
2061		{
2062		final CompletableFuture<Integer> f = new CompletableFuture<>();
2063		final CompletableFuture<Integer> g = new CompletableFuture<>();
2064	<	final Noop r = new Noop(m);
2064	>	final Noop r1 = new Noop(m);
2065	>	final Noop r2 = new Noop(m);
2066	>	final Noop r3 = new Noop(m);
2067
2068	<	assertTrue((fFirst ? f : g).complete(v1));
2069	<	if (!createIncomplete)
2070	<	assertTrue((!fFirst ? f : g).cancel(mayInterruptIfRunning));
2071	<	final CompletableFuture<Void> h = m.runAfterBoth(f, g, r);
2072	<	if (createIncomplete) {
2073	<	checkIncomplete(h);
2074	<	assertTrue((!fFirst ? f : g).cancel(mayInterruptIfRunning));
2075	<	}
2068	>	final CompletableFuture<Integer> fst =  fFirst ? f : g;
2069	>	final CompletableFuture<Integer> snd = !fFirst ? f : g;
2070	>	final Callable<Boolean> complete1 = failFirst ?
2071	>	() -> fst.cancel(mayInterruptIfRunning) :
2072	>	() -> fst.complete(v1);
2073	>	final Callable<Boolean> complete2 = failFirst ?
2074	>	() -> snd.complete(v1) :
2075	>	() -> snd.cancel(mayInterruptIfRunning);
2076
2077	<	checkCompletedWithWrappedCancellationException(h);
2078	<	checkCancelled(!fFirst ? f : g);
2079	<	r.assertNotInvoked();
2080	<	checkCompletedNormally(fFirst ? f : g, v1);
2077	>	final CompletableFuture<Void> h1 = m.runAfterBoth(f, g, r1);
2078	>	assertTrue(complete1.call());
2079	>	final CompletableFuture<Void> h2 = m.runAfterBoth(f, g, r2);
2080	>	checkIncomplete(h1);
2081	>	checkIncomplete(h2);
2082	>	assertTrue(complete2.call());
2083	>	final CompletableFuture<Void> h3 = m.runAfterBoth(f, g, r3);
2084	>
2085	>	checkCompletedWithWrappedCancellationException(h1);
2086	>	checkCompletedWithWrappedCancellationException(h2);
2087	>	checkCompletedWithWrappedCancellationException(h3);
2088	>	r1.assertNotInvoked();
2089	>	r2.assertNotInvoked();
2090	>	r3.assertNotInvoked();
2091	>	checkCompletedNormally(failFirst ? snd : fst, v1);
2092	>	checkCancelled(failFirst ? fst : snd);
2093		}}
2094
2095		/**
#	Line 1899 | Line 2105 | public class CompletableFutureTest exten
2105		final CompletableFuture<Integer> g = new CompletableFuture<>();
2106		final FailingRunnable r1 = new FailingRunnable(m);
2107		final FailingRunnable r2 = new FailingRunnable(m);
2108	+	final FailingRunnable r3 = new FailingRunnable(m);
2109
2110	<	CompletableFuture<Void> h1 = m.runAfterBoth(f, g, r1);
2111	<	assertTrue(fFirst ? f.complete(v1) : g.complete(v2));
2112	<	assertTrue(!fFirst ? f.complete(v1) : g.complete(v2));
2113	<	CompletableFuture<Void> h2 = m.runAfterBoth(f, g, r2);
2110	>	final CompletableFuture<Integer> fst =  fFirst ? f : g;
2111	>	final CompletableFuture<Integer> snd = !fFirst ? f : g;
2112	>	final Integer w1 =  fFirst ? v1 : v2;
2113	>	final Integer w2 = !fFirst ? v1 : v2;
2114
2115	<	checkCompletedWithWrappedCFException(h1);
2116	<	checkCompletedWithWrappedCFException(h2);
2115	>	final CompletableFuture<Void> h1 = m.runAfterBoth(f, g, r1);
2116	>	assertTrue(fst.complete(w1));
2117	>	final CompletableFuture<Void> h2 = m.runAfterBoth(f, g, r2);
2118	>	assertTrue(snd.complete(w2));
2119	>	final CompletableFuture<Void> h3 = m.runAfterBoth(f, g, r3);
2120	>
2121	>	checkCompletedWithWrappedException(h1, r1.ex);
2122	>	checkCompletedWithWrappedException(h2, r2.ex);
2123	>	checkCompletedWithWrappedException(h3, r3.ex);
2124	>	r1.assertInvoked();
2125	>	r2.assertInvoked();
2126	>	r3.assertInvoked();
2127		checkCompletedNormally(f, v1);
2128		checkCompletedNormally(g, v2);
2129		}}
#	Line 2193 | Line 2410 | public class CompletableFutureTest exten
2410		f.complete(v1);
2411		final CompletableFuture<Integer> h2 = m.applyToEither(f, g, rs[2]);
2412		final CompletableFuture<Integer> h3 = m.applyToEither(g, f, rs[3]);
2413	<	checkCompletedWithWrappedCFException(h0);
2414	<	checkCompletedWithWrappedCFException(h1);
2415	<	checkCompletedWithWrappedCFException(h2);
2416	<	checkCompletedWithWrappedCFException(h3);
2413	>	checkCompletedWithWrappedException(h0, rs[0].ex);
2414	>	checkCompletedWithWrappedException(h1, rs[1].ex);
2415	>	checkCompletedWithWrappedException(h2, rs[2].ex);
2416	>	checkCompletedWithWrappedException(h3, rs[3].ex);
2417		for (int i = 0; i < 4; i++) rs[i].assertValue(v1);
2418
2419		g.complete(v2);
#	Line 2205 | Line 2422 | public class CompletableFutureTest exten
2422		final CompletableFuture<Integer> h4 = m.applyToEither(f, g, rs[4]);
2423		final CompletableFuture<Integer> h5 = m.applyToEither(g, f, rs[5]);
2424
2425	<	checkCompletedWithWrappedCFException(h4);
2425	>	checkCompletedWithWrappedException(h4, rs[4].ex);
2426		assertTrue(Objects.equals(v1, rs[4].value) ||
2427		Objects.equals(v2, rs[4].value));
2428	<	checkCompletedWithWrappedCFException(h5);
2428	>	checkCompletedWithWrappedException(h5, rs[5].ex);
2429		assertTrue(Objects.equals(v1, rs[5].value) ||
2430		Objects.equals(v2, rs[5].value));
2431
#	Line 2452 | Line 2669 | public class CompletableFutureTest exten
2669		f.complete(v1);
2670		final CompletableFuture<Void> h2 = m.acceptEither(f, g, rs[2]);
2671		final CompletableFuture<Void> h3 = m.acceptEither(g, f, rs[3]);
2672	<	checkCompletedWithWrappedCFException(h0);
2673	<	checkCompletedWithWrappedCFException(h1);
2674	<	checkCompletedWithWrappedCFException(h2);
2675	<	checkCompletedWithWrappedCFException(h3);
2672	>	checkCompletedWithWrappedException(h0, rs[0].ex);
2673	>	checkCompletedWithWrappedException(h1, rs[1].ex);
2674	>	checkCompletedWithWrappedException(h2, rs[2].ex);
2675	>	checkCompletedWithWrappedException(h3, rs[3].ex);
2676		for (int i = 0; i < 4; i++) rs[i].assertValue(v1);
2677
2678		g.complete(v2);
#	Line 2464 | Line 2681 | public class CompletableFutureTest exten
2681		final CompletableFuture<Void> h4 = m.acceptEither(f, g, rs[4]);
2682		final CompletableFuture<Void> h5 = m.acceptEither(g, f, rs[5]);
2683
2684	<	checkCompletedWithWrappedCFException(h4);
2684	>	checkCompletedWithWrappedException(h4, rs[4].ex);
2685		assertTrue(Objects.equals(v1, rs[4].value) ||
2686		Objects.equals(v2, rs[4].value));
2687	<	checkCompletedWithWrappedCFException(h5);
2687	>	checkCompletedWithWrappedException(h5, rs[5].ex);
2688		assertTrue(Objects.equals(v1, rs[5].value) ||
2689		Objects.equals(v2, rs[5].value));
2690
#	Line 2483 | Line 2700 | public class CompletableFutureTest exten
2700		for (ExecutionMode m : ExecutionMode.values())
2701		for (Integer v1 : new Integer[] { 1, null })
2702		for (Integer v2 : new Integer[] { 2, null })
2703	+	for (boolean pushNop : new boolean[] { true, false })
2704		{
2705		final CompletableFuture<Integer> f = new CompletableFuture<>();
2706		final CompletableFuture<Integer> g = new CompletableFuture<>();
#	Line 2495 | Line 2713 | public class CompletableFutureTest exten
2713		checkIncomplete(h1);
2714		rs[0].assertNotInvoked();
2715		rs[1].assertNotInvoked();
2716	+	if (pushNop) {          // ad hoc test of intra-completion interference
2717	+	m.thenRun(f, () -> {});
2718	+	m.thenRun(g, () -> {});
2719	+	}
2720		f.complete(v1);
2721		checkCompletedNormally(h0, null);
2722		checkCompletedNormally(h1, null);
#	Line 2707 | Line 2929 | public class CompletableFutureTest exten
2929		assertTrue(f.complete(v1));
2930		final CompletableFuture<Void> h2 = m.runAfterEither(f, g, rs[2]);
2931		final CompletableFuture<Void> h3 = m.runAfterEither(g, f, rs[3]);
2932	<	checkCompletedWithWrappedCFException(h0);
2933	<	checkCompletedWithWrappedCFException(h1);
2934	<	checkCompletedWithWrappedCFException(h2);
2935	<	checkCompletedWithWrappedCFException(h3);
2932	>	checkCompletedWithWrappedException(h0, rs[0].ex);
2933	>	checkCompletedWithWrappedException(h1, rs[1].ex);
2934	>	checkCompletedWithWrappedException(h2, rs[2].ex);
2935	>	checkCompletedWithWrappedException(h3, rs[3].ex);
2936		for (int i = 0; i < 4; i++) rs[i].assertInvoked();
2937		assertTrue(g.complete(v2));
2938		final CompletableFuture<Void> h4 = m.runAfterEither(f, g, rs[4]);
2939		final CompletableFuture<Void> h5 = m.runAfterEither(g, f, rs[5]);
2940	<	checkCompletedWithWrappedCFException(h4);
2941	<	checkCompletedWithWrappedCFException(h5);
2940	>	checkCompletedWithWrappedException(h4, rs[4].ex);
2941	>	checkCompletedWithWrappedException(h5, rs[5].ex);
2942
2943		checkCompletedNormally(f, v1);
2944		checkCompletedNormally(g, v2);
#	Line 2777 | Line 2999 | public class CompletableFutureTest exten
2999		final CompletableFuture<Integer> g = m.thenCompose(f, r);
3000		if (createIncomplete) assertTrue(f.complete(v1));
3001
3002	<	checkCompletedWithWrappedCFException(g);
3002	>	checkCompletedWithWrappedException(g, r.ex);
3003		checkCompletedNormally(f, v1);
3004		}}
3005
#	Line 2802 | Line 3024 | public class CompletableFutureTest exten
3024		checkCancelled(f);
3025		}}
3026
3027	+	/**
3028	+	* thenCompose result completes exceptionally if the result of the action does
3029	+	*/
3030	+	public void testThenCompose_actionReturnsFailingFuture() {
3031	+	for (ExecutionMode m : ExecutionMode.values())
3032	+	for (int order = 0; order < 6; order++)
3033	+	for (Integer v1 : new Integer[] { 1, null })
3034	+	{
3035	+	final CFException ex = new CFException();
3036	+	final CompletableFuture<Integer> f = new CompletableFuture<>();
3037	+	final CompletableFuture<Integer> g = new CompletableFuture<>();
3038	+	final CompletableFuture<Integer> h;
3039	+	// Test all permutations of orders
3040	+	switch (order) {
3041	+	case 0:
3042	+	assertTrue(f.complete(v1));
3043	+	assertTrue(g.completeExceptionally(ex));
3044	+	h = m.thenCompose(f, (x -> g));
3045	+	break;
3046	+	case 1:
3047	+	assertTrue(f.complete(v1));
3048	+	h = m.thenCompose(f, (x -> g));
3049	+	assertTrue(g.completeExceptionally(ex));
3050	+	break;
3051	+	case 2:
3052	+	assertTrue(g.completeExceptionally(ex));
3053	+	assertTrue(f.complete(v1));
3054	+	h = m.thenCompose(f, (x -> g));
3055	+	break;
3056	+	case 3:
3057	+	assertTrue(g.completeExceptionally(ex));
3058	+	h = m.thenCompose(f, (x -> g));
3059	+	assertTrue(f.complete(v1));
3060	+	break;
3061	+	case 4:
3062	+	h = m.thenCompose(f, (x -> g));
3063	+	assertTrue(f.complete(v1));
3064	+	assertTrue(g.completeExceptionally(ex));
3065	+	break;
3066	+	case 5:
3067	+	h = m.thenCompose(f, (x -> g));
3068	+	assertTrue(f.complete(v1));
3069	+	assertTrue(g.completeExceptionally(ex));
3070	+	break;
3071	+	default: throw new AssertionError();
3072	+	}
3073	+
3074	+	checkCompletedExceptionally(g, ex);
3075	+	checkCompletedWithWrappedException(h, ex);
3076	+	checkCompletedNormally(f, v1);
3077	+	}}
3078	+
3079		// other static methods
3080
3081		/**
#	Line 2818 | Line 3092 | public class CompletableFutureTest exten
3092		* when all components complete normally
3093		*/
3094		public void testAllOf_normal() throws Exception {
3095	<	for (int k = 1; k < 20; ++k) {
3095	>	for (int k = 1; k < 10; k++) {
3096		CompletableFuture<Integer>[] fs
3097		= (CompletableFuture<Integer>[]) new CompletableFuture[k];
3098	<	for (int i = 0; i < k; ++i)
3098	>	for (int i = 0; i < k; i++)
3099		fs[i] = new CompletableFuture<>();
3100		CompletableFuture<Void> f = CompletableFuture.allOf(fs);
3101	<	for (int i = 0; i < k; ++i) {
3101	>	for (int i = 0; i < k; i++) {
3102		checkIncomplete(f);
3103		checkIncomplete(CompletableFuture.allOf(fs));
3104		fs[i].complete(one);
#	Line 2834 | Line 3108 | public class CompletableFutureTest exten
3108		}
3109		}
3110
3111	<	public void testAllOf_backwards() throws Exception {
3112	<	for (int k = 1; k < 20; ++k) {
3111	>	public void testAllOf_normal_backwards() throws Exception {
3112	>	for (int k = 1; k < 10; k++) {
3113		CompletableFuture<Integer>[] fs
3114		= (CompletableFuture<Integer>[]) new CompletableFuture[k];
3115	<	for (int i = 0; i < k; ++i)
3115	>	for (int i = 0; i < k; i++)
3116		fs[i] = new CompletableFuture<>();
3117		CompletableFuture<Void> f = CompletableFuture.allOf(fs);
3118		for (int i = k - 1; i >= 0; i--) {
#	Line 2851 | Line 3125 | public class CompletableFutureTest exten
3125		}
3126		}
3127
3128	+	public void testAllOf_exceptional() throws Exception {
3129	+	for (int k = 1; k < 10; k++) {
3130	+	CompletableFuture<Integer>[] fs
3131	+	= (CompletableFuture<Integer>[]) new CompletableFuture[k];
3132	+	CFException ex = new CFException();
3133	+	for (int i = 0; i < k; i++)
3134	+	fs[i] = new CompletableFuture<>();
3135	+	CompletableFuture<Void> f = CompletableFuture.allOf(fs);
3136	+	for (int i = 0; i < k; i++) {
3137	+	checkIncomplete(f);
3138	+	checkIncomplete(CompletableFuture.allOf(fs));
3139	+	if (i != k / 2) {
3140	+	fs[i].complete(i);
3141	+	checkCompletedNormally(fs[i], i);
3142	+	} else {
3143	+	fs[i].completeExceptionally(ex);
3144	+	checkCompletedExceptionally(fs[i], ex);
3145	+	}
3146	+	}
3147	+	checkCompletedWithWrappedException(f, ex);
3148	+	checkCompletedWithWrappedException(CompletableFuture.allOf(fs), ex);
3149	+	}
3150	+	}
3151	+
3152		/**
3153		* anyOf(no component futures) returns an incomplete future
3154		*/
3155		public void testAnyOf_empty() throws Exception {
3156	+	for (Integer v1 : new Integer[] { 1, null })
3157	+	{
3158		CompletableFuture<Object> f = CompletableFuture.anyOf();
3159		checkIncomplete(f);
3160	<	}
3160	>
3161	>	f.complete(v1);
3162	>	checkCompletedNormally(f, v1);
3163	>	}}
3164
3165		/**
3166		* anyOf returns a future completed normally with a value when
3167		* a component future does
3168		*/
3169		public void testAnyOf_normal() throws Exception {
3170	<	for (int k = 0; k < 10; ++k) {
3170	>	for (int k = 0; k < 10; k++) {
3171		CompletableFuture[] fs = new CompletableFuture[k];
3172	<	for (int i = 0; i < k; ++i)
3172	>	for (int i = 0; i < k; i++)
3173		fs[i] = new CompletableFuture<>();
3174		CompletableFuture<Object> f = CompletableFuture.anyOf(fs);
3175		checkIncomplete(f);
3176	<	for (int i = 0; i < k; ++i) {
3177	<	fs[i].complete(one);
3178	<	checkCompletedNormally(f, one);
3179	<	checkCompletedNormally(CompletableFuture.anyOf(fs), one);
3176	>	for (int i = 0; i < k; i++) {
3177	>	fs[i].complete(i);
3178	>	checkCompletedNormally(f, 0);
3179	>	int x = (int) CompletableFuture.anyOf(fs).join();
3180	>	assertTrue(0 <= x && x <= i);
3181	>	}
3182	>	}
3183	>	}
3184	>	public void testAnyOf_normal_backwards() throws Exception {
3185	>	for (int k = 0; k < 10; k++) {
3186	>	CompletableFuture[] fs = new CompletableFuture[k];
3187	>	for (int i = 0; i < k; i++)
3188	>	fs[i] = new CompletableFuture<>();
3189	>	CompletableFuture<Object> f = CompletableFuture.anyOf(fs);
3190	>	checkIncomplete(f);
3191	>	for (int i = k - 1; i >= 0; i--) {
3192	>	fs[i].complete(i);
3193	>	checkCompletedNormally(f, k - 1);
3194	>	int x = (int) CompletableFuture.anyOf(fs).join();
3195	>	assertTrue(i <= x && x <= k - 1);
3196		}
3197		}
3198		}
#	Line 2882 | Line 3201 | public class CompletableFutureTest exten
3201		* anyOf result completes exceptionally when any component does.
3202		*/
3203		public void testAnyOf_exceptional() throws Exception {
3204	<	for (int k = 0; k < 10; ++k) {
3204	>	for (int k = 0; k < 10; k++) {
3205	>	CompletableFuture[] fs = new CompletableFuture[k];
3206	>	CFException[] exs = new CFException[k];
3207	>	for (int i = 0; i < k; i++) {
3208	>	fs[i] = new CompletableFuture<>();
3209	>	exs[i] = new CFException();
3210	>	}
3211	>	CompletableFuture<Object> f = CompletableFuture.anyOf(fs);
3212	>	checkIncomplete(f);
3213	>	for (int i = 0; i < k; i++) {
3214	>	fs[i].completeExceptionally(exs[i]);
3215	>	checkCompletedWithWrappedException(f, exs[0]);
3216	>	checkCompletedWithWrappedCFException(CompletableFuture.anyOf(fs));
3217	>	}
3218	>	}
3219	>	}
3220	>
3221	>	public void testAnyOf_exceptional_backwards() throws Exception {
3222	>	for (int k = 0; k < 10; k++) {
3223		CompletableFuture[] fs = new CompletableFuture[k];
3224	<	for (int i = 0; i < k; ++i)
3224	>	CFException[] exs = new CFException[k];
3225	>	for (int i = 0; i < k; i++) {
3226		fs[i] = new CompletableFuture<>();
3227	+	exs[i] = new CFException();
3228	+	}
3229		CompletableFuture<Object> f = CompletableFuture.anyOf(fs);
3230		checkIncomplete(f);
3231	<	for (int i = 0; i < k; ++i) {
3232	<	fs[i].completeExceptionally(new CFException());
3233	<	checkCompletedWithWrappedCFException(f);
3231	>	for (int i = k - 1; i >= 0; i--) {
3232	>	fs[i].completeExceptionally(exs[i]);
3233	>	checkCompletedWithWrappedException(f, exs[k - 1]);
3234		checkCompletedWithWrappedCFException(CompletableFuture.anyOf(fs));
3235		}
3236		}
#	Line 2903 | Line 3243 | public class CompletableFutureTest exten
3243		CompletableFuture<Integer> f = new CompletableFuture<>();
3244		CompletableFuture<Integer> g = new CompletableFuture<>();
3245		CompletableFuture<Integer> nullFuture = (CompletableFuture<Integer>)null;
2906	–	CompletableFuture<?> h;
3246		ThreadExecutor exec = new ThreadExecutor();
3247
3248		Runnable[] throwingActions = {
3249		() -> CompletableFuture.supplyAsync(null),
3250		() -> CompletableFuture.supplyAsync(null, exec),
3251	<	() -> CompletableFuture.supplyAsync(new IntegerSupplier(ExecutionMode.DEFAULT, 42), null),
3251	>	() -> CompletableFuture.supplyAsync(new IntegerSupplier(ExecutionMode.SYNC, 42), null),
3252
3253		() -> CompletableFuture.runAsync(null),
3254		() -> CompletableFuture.runAsync(null, exec),
#	Line 3000 | Line 3339 | public class CompletableFutureTest exten
3339		() -> CompletableFuture.anyOf(null, f),
3340
3341		() -> f.obtrudeException(null),
3342	+
3343	+	() -> CompletableFuture.delayedExecutor(1L, SECONDS, null),
3344	+	() -> CompletableFuture.delayedExecutor(1L, null, exec),
3345	+	() -> CompletableFuture.delayedExecutor(1L, null),
3346	+
3347	+	() -> f.orTimeout(1L, null),
3348	+	() -> f.completeOnTimeout(42, 1L, null),
3349	+
3350	+	() -> CompletableFuture.failedFuture(null),
3351	+	() -> CompletableFuture.failedStage(null),
3352		};
3353
3354		assertThrows(NullPointerException.class, throwingActions);
#	Line 3007 | Line 3356 | public class CompletableFutureTest exten
3356		}
3357
3358		/**
3359	+	* Test submissions to an executor that rejects all tasks.
3360	+	*/
3361	+	public void testRejectingExecutor() {
3362	+	for (Integer v : new Integer[] { 1, null })
3363	+	{
3364	+	final CountingRejectingExecutor e = new CountingRejectingExecutor();
3365	+
3366	+	final CompletableFuture<Integer> complete = CompletableFuture.completedFuture(v);
3367	+	final CompletableFuture<Integer> incomplete = new CompletableFuture<>();
3368	+
3369	+	List<CompletableFuture<?>> futures = new ArrayList<>();
3370	+
3371	+	List<CompletableFuture<Integer>> srcs = new ArrayList<>();
3372	+	srcs.add(complete);
3373	+	srcs.add(incomplete);
3374	+
3375	+	for (CompletableFuture<Integer> src : srcs) {
3376	+	List<CompletableFuture<?>> fs = new ArrayList<>();
3377	+	fs.add(src.thenRunAsync(() -> {}, e));
3378	+	fs.add(src.thenAcceptAsync((z) -> {}, e));
3379	+	fs.add(src.thenApplyAsync((z) -> z, e));
3380	+
3381	+	fs.add(src.thenCombineAsync(src, (x, y) -> x, e));
3382	+	fs.add(src.thenAcceptBothAsync(src, (x, y) -> {}, e));
3383	+	fs.add(src.runAfterBothAsync(src, () -> {}, e));
3384	+
3385	+	fs.add(src.applyToEitherAsync(src, (z) -> z, e));
3386	+	fs.add(src.acceptEitherAsync(src, (z) -> {}, e));
3387	+	fs.add(src.runAfterEitherAsync(src, () -> {}, e));
3388	+
3389	+	fs.add(src.thenComposeAsync((z) -> null, e));
3390	+	fs.add(src.whenCompleteAsync((z, t) -> {}, e));
3391	+	fs.add(src.handleAsync((z, t) -> null, e));
3392	+
3393	+	for (CompletableFuture<?> future : fs) {
3394	+	if (src.isDone())
3395	+	checkCompletedWithWrappedException(future, e.ex);
3396	+	else
3397	+	checkIncomplete(future);
3398	+	}
3399	+	futures.addAll(fs);
3400	+	}
3401	+
3402	+	{
3403	+	List<CompletableFuture<?>> fs = new ArrayList<>();
3404	+
3405	+	fs.add(complete.thenCombineAsync(incomplete, (x, y) -> x, e));
3406	+	fs.add(incomplete.thenCombineAsync(complete, (x, y) -> x, e));
3407	+
3408	+	fs.add(complete.thenAcceptBothAsync(incomplete, (x, y) -> {}, e));
3409	+	fs.add(incomplete.thenAcceptBothAsync(complete, (x, y) -> {}, e));
3410	+
3411	+	fs.add(complete.runAfterBothAsync(incomplete, () -> {}, e));
3412	+	fs.add(incomplete.runAfterBothAsync(complete, () -> {}, e));
3413	+
3414	+	for (CompletableFuture<?> future : fs)
3415	+	checkIncomplete(future);
3416	+	futures.addAll(fs);
3417	+	}
3418	+
3419	+	{
3420	+	List<CompletableFuture<?>> fs = new ArrayList<>();
3421	+
3422	+	fs.add(complete.applyToEitherAsync(incomplete, (z) -> z, e));
3423	+	fs.add(incomplete.applyToEitherAsync(complete, (z) -> z, e));
3424	+
3425	+	fs.add(complete.acceptEitherAsync(incomplete, (z) -> {}, e));
3426	+	fs.add(incomplete.acceptEitherAsync(complete, (z) -> {}, e));
3427	+
3428	+	fs.add(complete.runAfterEitherAsync(incomplete, () -> {}, e));
3429	+	fs.add(incomplete.runAfterEitherAsync(complete, () -> {}, e));
3430	+
3431	+	for (CompletableFuture<?> future : fs)
3432	+	checkCompletedWithWrappedException(future, e.ex);
3433	+	futures.addAll(fs);
3434	+	}
3435	+
3436	+	incomplete.complete(v);
3437	+
3438	+	for (CompletableFuture<?> future : futures)
3439	+	checkCompletedWithWrappedException(future, e.ex);
3440	+
3441	+	assertEquals(futures.size(), e.count.get());
3442	+	}}
3443	+
3444	+	/**
3445	+	* Test submissions to an executor that rejects all tasks, but
3446	+	* should never be invoked because the dependent future is
3447	+	* explicitly completed.
3448	+	*/
3449	+	public void testRejectingExecutorNeverInvoked() {
3450	+	for (Integer v : new Integer[] { 1, null })
3451	+	{
3452	+	final CountingRejectingExecutor e = new CountingRejectingExecutor();
3453	+
3454	+	final CompletableFuture<Integer> complete = CompletableFuture.completedFuture(v);
3455	+	final CompletableFuture<Integer> incomplete = new CompletableFuture<>();
3456	+
3457	+	List<CompletableFuture<?>> futures = new ArrayList<>();
3458	+
3459	+	List<CompletableFuture<Integer>> srcs = new ArrayList<>();
3460	+	srcs.add(complete);
3461	+	srcs.add(incomplete);
3462	+
3463	+	List<CompletableFuture<?>> fs = new ArrayList<>();
3464	+	fs.add(incomplete.thenRunAsync(() -> {}, e));
3465	+	fs.add(incomplete.thenAcceptAsync((z) -> {}, e));
3466	+	fs.add(incomplete.thenApplyAsync((z) -> z, e));
3467	+
3468	+	fs.add(incomplete.thenCombineAsync(incomplete, (x, y) -> x, e));
3469	+	fs.add(incomplete.thenAcceptBothAsync(incomplete, (x, y) -> {}, e));
3470	+	fs.add(incomplete.runAfterBothAsync(incomplete, () -> {}, e));
3471	+
3472	+	fs.add(incomplete.applyToEitherAsync(incomplete, (z) -> z, e));
3473	+	fs.add(incomplete.acceptEitherAsync(incomplete, (z) -> {}, e));
3474	+	fs.add(incomplete.runAfterEitherAsync(incomplete, () -> {}, e));
3475	+
3476	+	fs.add(incomplete.thenComposeAsync((z) -> null, e));
3477	+	fs.add(incomplete.whenCompleteAsync((z, t) -> {}, e));
3478	+	fs.add(incomplete.handleAsync((z, t) -> null, e));
3479	+
3480	+	fs.add(complete.thenCombineAsync(incomplete, (x, y) -> x, e));
3481	+	fs.add(incomplete.thenCombineAsync(complete, (x, y) -> x, e));
3482	+
3483	+	fs.add(complete.thenAcceptBothAsync(incomplete, (x, y) -> {}, e));
3484	+	fs.add(incomplete.thenAcceptBothAsync(complete, (x, y) -> {}, e));
3485	+
3486	+	fs.add(complete.runAfterBothAsync(incomplete, () -> {}, e));
3487	+	fs.add(incomplete.runAfterBothAsync(complete, () -> {}, e));
3488	+
3489	+	for (CompletableFuture<?> future : fs)
3490	+	checkIncomplete(future);
3491	+
3492	+	for (CompletableFuture<?> future : fs)
3493	+	future.complete(null);
3494	+
3495	+	incomplete.complete(v);
3496	+
3497	+	for (CompletableFuture<?> future : fs)
3498	+	checkCompletedNormally(future, null);
3499	+
3500	+	assertEquals(0, e.count.get());
3501	+	}}
3502	+
3503	+	/**
3504		* toCompletableFuture returns this CompletableFuture.
3505		*/
3506		public void testToCompletableFuture() {
#	Line 3014 | Line 3508 | public class CompletableFutureTest exten
3508		assertSame(f, f.toCompletableFuture());
3509		}
3510
3511	<	//     public void testRunAfterEither_resultDeterminedAtTimeOfCreation() {
3512	<	//         for (ExecutionMode m : ExecutionMode.values())
3513	<	//         for (boolean mayInterruptIfRunning : new boolean[] { true, false })
3514	<	//         for (Integer v1 : new Integer[] { 1, null })
3515	<	//     {
3516	<	//         final CompletableFuture<Integer> f = new CompletableFuture<>();
3517	<	//         final CompletableFuture<Integer> g = new CompletableFuture<>();
3518	<	//         final Noop[] rs = new Noop[2];
3519	<	//         for (int i = 0; i < rs.length; i++) rs[i] = new Noop(m);
3520	<	//         f.complete(v1);
3521	<	//         final CompletableFuture<Void> h0 = m.runAfterEither(f, g, rs[0]);
3522	<	//         final CompletableFuture<Void> h1 = m.runAfterEither(g, f, rs[1]);
3523	<	//         assertTrue(g.cancel(mayInterruptIfRunning));
3524	<	//         checkCompletedNormally(h0, null);
3525	<	//         checkCompletedNormally(h1, null);
3526	<	//         for (Noop r : rs) r.assertInvoked();
3527	<	//     }}
3511	>	// jdk9
3512	>
3513	>	/**
3514	>	* newIncompleteFuture returns an incomplete CompletableFuture
3515	>	*/
3516	>	public void testNewIncompleteFuture() {
3517	>	for (Integer v1 : new Integer[] { 1, null })
3518	>	{
3519	>	CompletableFuture<Integer> f = new CompletableFuture<>();
3520	>	CompletableFuture<Integer> g = f.newIncompleteFuture();
3521	>	checkIncomplete(f);
3522	>	checkIncomplete(g);
3523	>	f.complete(v1);
3524	>	checkCompletedNormally(f, v1);
3525	>	checkIncomplete(g);
3526	>	g.complete(v1);
3527	>	checkCompletedNormally(g, v1);
3528	>	assertSame(g.getClass(), CompletableFuture.class);
3529	>	}}
3530	>
3531	>	/**
3532	>	* completedStage returns a completed CompletionStage
3533	>	*/
3534	>	public void testCompletedStage() {
3535	>	AtomicInteger x = new AtomicInteger(0);
3536	>	AtomicReference<Throwable> r = new AtomicReference<Throwable>();
3537	>	CompletionStage<Integer> f = CompletableFuture.completedStage(1);
3538	>	f.whenComplete((v, e) -> {if (e != null) r.set(e); else x.set(v);});
3539	>	assertEquals(x.get(), 1);
3540	>	assertNull(r.get());
3541	>	}
3542	>
3543	>	/**
3544	>	* defaultExecutor by default returns the commonPool if
3545	>	* it supports more than one thread.
3546	>	*/
3547	>	public void testDefaultExecutor() {
3548	>	CompletableFuture<Integer> f = new CompletableFuture<>();
3549	>	Executor e = f.defaultExecutor();
3550	>	Executor c = ForkJoinPool.commonPool();
3551	>	if (ForkJoinPool.getCommonPoolParallelism() > 1)
3552	>	assertSame(e, c);
3553	>	else
3554	>	assertNotSame(e, c);
3555	>	}
3556	>
3557	>	/**
3558	>	* failedFuture returns a CompletableFuture completed
3559	>	* exceptionally with the given Exception
3560	>	*/
3561	>	public void testFailedFuture() {
3562	>	CFException ex = new CFException();
3563	>	CompletableFuture<Integer> f = CompletableFuture.failedFuture(ex);
3564	>	checkCompletedExceptionally(f, ex);
3565	>	}
3566	>
3567	>	/**
3568	>	* failedFuture(null) throws NPE
3569	>	*/
3570	>	public void testFailedFuture_null() {
3571	>	try {
3572	>	CompletableFuture<Integer> f = CompletableFuture.failedFuture(null);
3573	>	shouldThrow();
3574	>	} catch (NullPointerException success) {}
3575	>	}
3576	>
3577	>	/**
3578	>	* copy returns a CompletableFuture that is completed normally,
3579	>	* with the same value, when source is.
3580	>	*/
3581	>	public void testCopy() {
3582	>	CompletableFuture<Integer> f = new CompletableFuture<>();
3583	>	CompletableFuture<Integer> g = f.copy();
3584	>	checkIncomplete(f);
3585	>	checkIncomplete(g);
3586	>	f.complete(1);
3587	>	checkCompletedNormally(f, 1);
3588	>	checkCompletedNormally(g, 1);
3589	>	}
3590	>
3591	>	/**
3592	>	* copy returns a CompletableFuture that is completed exceptionally
3593	>	* when source is.
3594	>	*/
3595	>	public void testCopy2() {
3596	>	CompletableFuture<Integer> f = new CompletableFuture<>();
3597	>	CompletableFuture<Integer> g = f.copy();
3598	>	checkIncomplete(f);
3599	>	checkIncomplete(g);
3600	>	CFException ex = new CFException();
3601	>	f.completeExceptionally(ex);
3602	>	checkCompletedExceptionally(f, ex);
3603	>	checkCompletedWithWrappedException(g, ex);
3604	>	}
3605	>
3606	>	/**
3607	>	* minimalCompletionStage returns a CompletableFuture that is
3608	>	* completed normally, with the same value, when source is.
3609	>	*/
3610	>	public void testMinimalCompletionStage() {
3611	>	CompletableFuture<Integer> f = new CompletableFuture<>();
3612	>	CompletionStage<Integer> g = f.minimalCompletionStage();
3613	>	AtomicInteger x = new AtomicInteger(0);
3614	>	AtomicReference<Throwable> r = new AtomicReference<Throwable>();
3615	>	checkIncomplete(f);
3616	>	g.whenComplete((v, e) -> {if (e != null) r.set(e); else x.set(v);});
3617	>	f.complete(1);
3618	>	checkCompletedNormally(f, 1);
3619	>	assertEquals(x.get(), 1);
3620	>	assertNull(r.get());
3621	>	}
3622	>
3623	>	/**
3624	>	* minimalCompletionStage returns a CompletableFuture that is
3625	>	* completed exceptionally when source is.
3626	>	*/
3627	>	public void testMinimalCompletionStage2() {
3628	>	CompletableFuture<Integer> f = new CompletableFuture<>();
3629	>	CompletionStage<Integer> g = f.minimalCompletionStage();
3630	>	AtomicInteger x = new AtomicInteger(0);
3631	>	AtomicReference<Throwable> r = new AtomicReference<Throwable>();
3632	>	g.whenComplete((v, e) -> {if (e != null) r.set(e); else x.set(v);});
3633	>	checkIncomplete(f);
3634	>	CFException ex = new CFException();
3635	>	f.completeExceptionally(ex);
3636	>	checkCompletedExceptionally(f, ex);
3637	>	assertEquals(x.get(), 0);
3638	>	assertEquals(r.get().getCause(), ex);
3639	>	}
3640	>
3641	>	/**
3642	>	* failedStage returns a CompletionStage completed
3643	>	* exceptionally with the given Exception
3644	>	*/
3645	>	public void testFailedStage() {
3646	>	CFException ex = new CFException();
3647	>	CompletionStage<Integer> f = CompletableFuture.failedStage(ex);
3648	>	AtomicInteger x = new AtomicInteger(0);
3649	>	AtomicReference<Throwable> r = new AtomicReference<Throwable>();
3650	>	f.whenComplete((v, e) -> {if (e != null) r.set(e); else x.set(v);});
3651	>	assertEquals(x.get(), 0);
3652	>	assertEquals(r.get(), ex);
3653	>	}
3654	>
3655	>	/**
3656	>	* completeAsync completes with value of given supplier
3657	>	*/
3658	>	public void testCompleteAsync() {
3659	>	for (Integer v1 : new Integer[] { 1, null })
3660	>	{
3661	>	CompletableFuture<Integer> f = new CompletableFuture<>();
3662	>	f.completeAsync(() -> v1);
3663	>	f.join();
3664	>	checkCompletedNormally(f, v1);
3665	>	}}
3666	>
3667	>	/**
3668	>	* completeAsync completes exceptionally if given supplier throws
3669	>	*/
3670	>	public void testCompleteAsync2() {
3671	>	CompletableFuture<Integer> f = new CompletableFuture<>();
3672	>	CFException ex = new CFException();
3673	>	f.completeAsync(() -> {if (true) throw ex; return 1;});
3674	>	try {
3675	>	f.join();
3676	>	shouldThrow();
3677	>	} catch (CompletionException success) {}
3678	>	checkCompletedWithWrappedException(f, ex);
3679	>	}
3680	>
3681	>	/**
3682	>	* completeAsync with given executor completes with value of given supplier
3683	>	*/
3684	>	public void testCompleteAsync3() {
3685	>	for (Integer v1 : new Integer[] { 1, null })
3686	>	{
3687	>	CompletableFuture<Integer> f = new CompletableFuture<>();
3688	>	ThreadExecutor executor = new ThreadExecutor();
3689	>	f.completeAsync(() -> v1, executor);
3690	>	assertSame(v1, f.join());
3691	>	checkCompletedNormally(f, v1);
3692	>	assertEquals(1, executor.count.get());
3693	>	}}
3694	>
3695	>	/**
3696	>	* completeAsync with given executor completes exceptionally if
3697	>	* given supplier throws
3698	>	*/
3699	>	public void testCompleteAsync4() {
3700	>	CompletableFuture<Integer> f = new CompletableFuture<>();
3701	>	CFException ex = new CFException();
3702	>	ThreadExecutor executor = new ThreadExecutor();
3703	>	f.completeAsync(() -> {if (true) throw ex; return 1;}, executor);
3704	>	try {
3705	>	f.join();
3706	>	shouldThrow();
3707	>	} catch (CompletionException success) {}
3708	>	checkCompletedWithWrappedException(f, ex);
3709	>	assertEquals(1, executor.count.get());
3710	>	}
3711	>
3712	>	/**
3713	>	* orTimeout completes with TimeoutException if not complete
3714	>	*/
3715	>	public void testOrTimeout_timesOut() {
3716	>	long timeoutMillis = timeoutMillis();
3717	>	CompletableFuture<Integer> f = new CompletableFuture<>();
3718	>	long startTime = System.nanoTime();
3719	>	assertSame(f, f.orTimeout(timeoutMillis, MILLISECONDS));
3720	>	checkCompletedWithTimeoutException(f);
3721	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
3722	>	}
3723	>
3724	>	/**
3725	>	* orTimeout completes normally if completed before timeout
3726	>	*/
3727	>	public void testOrTimeout_completed() {
3728	>	for (Integer v1 : new Integer[] { 1, null })
3729	>	{
3730	>	CompletableFuture<Integer> f = new CompletableFuture<>();
3731	>	CompletableFuture<Integer> g = new CompletableFuture<>();
3732	>	long startTime = System.nanoTime();
3733	>	f.complete(v1);
3734	>	assertSame(f, f.orTimeout(LONG_DELAY_MS, MILLISECONDS));
3735	>	assertSame(g, g.orTimeout(LONG_DELAY_MS, MILLISECONDS));
3736	>	g.complete(v1);
3737	>	checkCompletedNormally(f, v1);
3738	>	checkCompletedNormally(g, v1);
3739	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS / 2);
3740	>	}}
3741	>
3742	>	/**
3743	>	* completeOnTimeout completes with given value if not complete
3744	>	*/
3745	>	public void testCompleteOnTimeout_timesOut() {
3746	>	testInParallel(() -> testCompleteOnTimeout_timesOut(42),
3747	>	() -> testCompleteOnTimeout_timesOut(null));
3748	>	}
3749	>
3750	>	/**
3751	>	* completeOnTimeout completes with given value if not complete
3752	>	*/
3753	>	public void testCompleteOnTimeout_timesOut(Integer v) {
3754	>	long timeoutMillis = timeoutMillis();
3755	>	CompletableFuture<Integer> f = new CompletableFuture<>();
3756	>	long startTime = System.nanoTime();
3757	>	assertSame(f, f.completeOnTimeout(v, timeoutMillis, MILLISECONDS));
3758	>	assertSame(v, f.join());
3759	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
3760	>	f.complete(99);         // should have no effect
3761	>	checkCompletedNormally(f, v);
3762	>	}
3763	>
3764	>	/**
3765	>	* completeOnTimeout has no effect if completed within timeout
3766	>	*/
3767	>	public void testCompleteOnTimeout_completed() {
3768	>	for (Integer v1 : new Integer[] { 1, null })
3769	>	{
3770	>	CompletableFuture<Integer> f = new CompletableFuture<>();
3771	>	CompletableFuture<Integer> g = new CompletableFuture<>();
3772	>	long startTime = System.nanoTime();
3773	>	f.complete(v1);
3774	>	assertSame(f, f.completeOnTimeout(-1, LONG_DELAY_MS, MILLISECONDS));
3775	>	assertSame(g, g.completeOnTimeout(-1, LONG_DELAY_MS, MILLISECONDS));
3776	>	g.complete(v1);
3777	>	checkCompletedNormally(f, v1);
3778	>	checkCompletedNormally(g, v1);
3779	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS / 2);
3780	>	}}
3781	>
3782	>	/**
3783	>	* delayedExecutor returns an executor that delays submission
3784	>	*/
3785	>	public void testDelayedExecutor() {
3786	>	testInParallel(() -> testDelayedExecutor(null, null),
3787	>	() -> testDelayedExecutor(null, 1),
3788	>	() -> testDelayedExecutor(new ThreadExecutor(), 1),
3789	>	() -> testDelayedExecutor(new ThreadExecutor(), 1));
3790	>	}
3791	>
3792	>	public void testDelayedExecutor(Executor executor, Integer v) throws Exception {
3793	>	long timeoutMillis = timeoutMillis();
3794	>	// Use an "unreasonably long" long timeout to catch lingering threads
3795	>	long longTimeoutMillis = 1000 * 60 * 60 * 24;
3796	>	final Executor delayer, longDelayer;
3797	>	if (executor == null) {
3798	>	delayer = CompletableFuture.delayedExecutor(timeoutMillis, MILLISECONDS);
3799	>	longDelayer = CompletableFuture.delayedExecutor(longTimeoutMillis, MILLISECONDS);
3800	>	} else {
3801	>	delayer = CompletableFuture.delayedExecutor(timeoutMillis, MILLISECONDS, executor);
3802	>	longDelayer = CompletableFuture.delayedExecutor(longTimeoutMillis, MILLISECONDS, executor);
3803	>	}
3804	>	long startTime = System.nanoTime();
3805	>	CompletableFuture<Integer> f =
3806	>	CompletableFuture.supplyAsync(() -> v, delayer);
3807	>	CompletableFuture<Integer> g =
3808	>	CompletableFuture.supplyAsync(() -> v, longDelayer);
3809	>
3810	>	assertNull(g.getNow(null));
3811	>
3812	>	assertSame(v, f.get(LONG_DELAY_MS, MILLISECONDS));
3813	>	long millisElapsed = millisElapsedSince(startTime);
3814	>	assertTrue(millisElapsed >= timeoutMillis);
3815	>	assertTrue(millisElapsed < LONG_DELAY_MS / 2);
3816	>
3817	>	checkCompletedNormally(f, v);
3818	>
3819	>	checkIncomplete(g);
3820	>	assertTrue(g.cancel(true));
3821	>	}
3822	>
3823	>	//--- tests of implementation details; not part of official tck ---
3824	>
3825	>	Object resultOf(CompletableFuture<?> f) {
3826	>	SecurityManager sm = System.getSecurityManager();
3827	>	if (sm != null) {
3828	>	try {
3829	>	System.setSecurityManager(null);
3830	>	} catch (SecurityException giveUp) {
3831	>	return "Reflection not available";
3832	>	}
3833	>	}
3834	>
3835	>	try {
3836	>	java.lang.reflect.Field resultField
3837	>	= CompletableFuture.class.getDeclaredField("result");
3838	>	resultField.setAccessible(true);
3839	>	return resultField.get(f);
3840	>	} catch (Throwable t) {
3841	>	throw new AssertionError(t);
3842	>	} finally {
3843	>	if (sm != null) System.setSecurityManager(sm);
3844	>	}
3845	>	}
3846	>
3847	>	public void testExceptionPropagationReusesResultObject() {
3848	>	if (!testImplementationDetails) return;
3849	>	for (ExecutionMode m : ExecutionMode.values())
3850	>	{
3851	>	final CFException ex = new CFException();
3852	>	final CompletableFuture<Integer> v42 = CompletableFuture.completedFuture(42);
3853	>	final CompletableFuture<Integer> incomplete = new CompletableFuture<>();
3854	>
3855	>	final Runnable noopRunnable = new Noop(m);
3856	>	final Consumer<Integer> noopConsumer = new NoopConsumer(m);
3857	>	final Function<Integer, Integer> incFunction = new IncFunction(m);
3858	>
3859	>	List<Function<CompletableFuture<Integer>, CompletableFuture<?>>> funs
3860	>	= new ArrayList<>();
3861	>
3862	>	funs.add((y) -> m.thenRun(y, noopRunnable));
3863	>	funs.add((y) -> m.thenAccept(y, noopConsumer));
3864	>	funs.add((y) -> m.thenApply(y, incFunction));
3865	>
3866	>	funs.add((y) -> m.runAfterEither(y, incomplete, noopRunnable));
3867	>	funs.add((y) -> m.acceptEither(y, incomplete, noopConsumer));
3868	>	funs.add((y) -> m.applyToEither(y, incomplete, incFunction));
3869	>
3870	>	funs.add((y) -> m.runAfterBoth(y, v42, noopRunnable));
3871	>	funs.add((y) -> m.runAfterBoth(v42, y, noopRunnable));
3872	>	funs.add((y) -> m.thenAcceptBoth(y, v42, new SubtractAction(m)));
3873	>	funs.add((y) -> m.thenAcceptBoth(v42, y, new SubtractAction(m)));
3874	>	funs.add((y) -> m.thenCombine(y, v42, new SubtractFunction(m)));
3875	>	funs.add((y) -> m.thenCombine(v42, y, new SubtractFunction(m)));
3876	>
3877	>	funs.add((y) -> m.whenComplete(y, (Integer r, Throwable t) -> {}));
3878	>
3879	>	funs.add((y) -> m.thenCompose(y, new CompletableFutureInc(m)));
3880	>
3881	>	funs.add((y) -> CompletableFuture.allOf(y));
3882	>	funs.add((y) -> CompletableFuture.allOf(y, v42));
3883	>	funs.add((y) -> CompletableFuture.allOf(v42, y));
3884	>	funs.add((y) -> CompletableFuture.anyOf(y));
3885	>	funs.add((y) -> CompletableFuture.anyOf(y, incomplete));
3886	>	funs.add((y) -> CompletableFuture.anyOf(incomplete, y));
3887	>
3888	>	for (Function<CompletableFuture<Integer>, CompletableFuture<?>>
3889	>	fun : funs) {
3890	>	CompletableFuture<Integer> f = new CompletableFuture<>();
3891	>	f.completeExceptionally(ex);
3892	>	CompletableFuture<Integer> src = m.thenApply(f, incFunction);
3893	>	checkCompletedWithWrappedException(src, ex);
3894	>	CompletableFuture<?> dep = fun.apply(src);
3895	>	checkCompletedWithWrappedException(dep, ex);
3896	>	assertSame(resultOf(src), resultOf(dep));
3897	>	}
3898	>
3899	>	for (Function<CompletableFuture<Integer>, CompletableFuture<?>>
3900	>	fun : funs) {
3901	>	CompletableFuture<Integer> f = new CompletableFuture<>();
3902	>	CompletableFuture<Integer> src = m.thenApply(f, incFunction);
3903	>	CompletableFuture<?> dep = fun.apply(src);
3904	>	f.completeExceptionally(ex);
3905	>	checkCompletedWithWrappedException(src, ex);
3906	>	checkCompletedWithWrappedException(dep, ex);
3907	>	assertSame(resultOf(src), resultOf(dep));
3908	>	}
3909	>
3910	>	for (boolean mayInterruptIfRunning : new boolean[] { true, false })
3911	>	for (Function<CompletableFuture<Integer>, CompletableFuture<?>>
3912	>	fun : funs) {
3913	>	CompletableFuture<Integer> f = new CompletableFuture<>();
3914	>	f.cancel(mayInterruptIfRunning);
3915	>	checkCancelled(f);
3916	>	CompletableFuture<Integer> src = m.thenApply(f, incFunction);
3917	>	checkCompletedWithWrappedCancellationException(src);
3918	>	CompletableFuture<?> dep = fun.apply(src);
3919	>	checkCompletedWithWrappedCancellationException(dep);
3920	>	assertSame(resultOf(src), resultOf(dep));
3921	>	}
3922	>
3923	>	for (boolean mayInterruptIfRunning : new boolean[] { true, false })
3924	>	for (Function<CompletableFuture<Integer>, CompletableFuture<?>>
3925	>	fun : funs) {
3926	>	CompletableFuture<Integer> f = new CompletableFuture<>();
3927	>	CompletableFuture<Integer> src = m.thenApply(f, incFunction);
3928	>	CompletableFuture<?> dep = fun.apply(src);
3929	>	f.cancel(mayInterruptIfRunning);
3930	>	checkCancelled(f);
3931	>	checkCompletedWithWrappedCancellationException(src);
3932	>	checkCompletedWithWrappedCancellationException(dep);
3933	>	assertSame(resultOf(src), resultOf(dep));
3934	>	}
3935	>	}}
3936	>
3937	>	/**
3938	>	* Minimal completion stages throw UOE for most non-CompletionStage methods
3939	>	*/
3940	>	public void testMinimalCompletionStage_minimality() {
3941	>	if (!testImplementationDetails) return;
3942	>	Function<Method, String> toSignature =
3943	>	(method) -> method.getName() + Arrays.toString(method.getParameterTypes());
3944	>	Predicate<Method> isNotStatic =
3945	>	(method) -> (method.getModifiers() & Modifier.STATIC) == 0;
3946	>	List<Method> minimalMethods =
3947	>	Stream.of(Object.class, CompletionStage.class)
3948	>	.flatMap((klazz) -> Stream.of(klazz.getMethods()))
3949	>	.filter(isNotStatic)
3950	>	.collect(Collectors.toList());
3951	>	// Methods from CompletableFuture permitted NOT to throw UOE
3952	>	String[] signatureWhitelist = {
3953	>	"newIncompleteFuture[]",
3954	>	"defaultExecutor[]",
3955	>	"minimalCompletionStage[]",
3956	>	"copy[]",
3957	>	};
3958	>	Set<String> permittedMethodSignatures =
3959	>	Stream.concat(minimalMethods.stream().map(toSignature),
3960	>	Stream.of(signatureWhitelist))
3961	>	.collect(Collectors.toSet());
3962	>	List<Method> allMethods = Stream.of(CompletableFuture.class.getMethods())
3963	>	.filter(isNotStatic)
3964	>	.filter((method) -> !permittedMethodSignatures.contains(toSignature.apply(method)))
3965	>	.collect(Collectors.toList());
3966	>
3967	>	List<CompletionStage<Integer>> stages = new ArrayList<>();
3968	>	stages.add(new CompletableFuture<Integer>().minimalCompletionStage());
3969	>	stages.add(CompletableFuture.completedStage(1));
3970	>	stages.add(CompletableFuture.failedStage(new CFException()));
3971	>
3972	>	List<Method> bugs = new ArrayList<>();
3973	>	for (Method method : allMethods) {
3974	>	Class<?>[] parameterTypes = method.getParameterTypes();
3975	>	Object[] args = new Object[parameterTypes.length];
3976	>	// Manufacture boxed primitives for primitive params
3977	>	for (int i = 0; i < args.length; i++) {
3978	>	Class<?> type = parameterTypes[i];
3979	>	if (parameterTypes[i] == boolean.class)
3980	>	args[i] = false;
3981	>	else if (parameterTypes[i] == int.class)
3982	>	args[i] = 0;
3983	>	else if (parameterTypes[i] == long.class)
3984	>	args[i] = 0L;
3985	>	}
3986	>	for (CompletionStage<Integer> stage : stages) {
3987	>	try {
3988	>	method.invoke(stage, args);
3989	>	bugs.add(method);
3990	>	}
3991	>	catch (java.lang.reflect.InvocationTargetException expected) {
3992	>	if (! (expected.getCause() instanceof UnsupportedOperationException)) {
3993	>	bugs.add(method);
3994	>	// expected.getCause().printStackTrace();
3995	>	}
3996	>	}
3997	>	catch (ReflectiveOperationException bad) { throw new Error(bad); }
3998	>	}
3999	>	}
4000	>	if (!bugs.isEmpty())
4001	>	throw new Error("Methods did not throw UOE: " + bugs);
4002	>	}
4003	>
4004	>	static class Monad {
4005	>	static class ZeroException extends RuntimeException {
4006	>	public ZeroException() { super("monadic zero"); }
4007	>	}
4008	>	// "return", "unit"
4009	>	static <T> CompletableFuture<T> unit(T value) {
4010	>	return completedFuture(value);
4011	>	}
4012	>	// monadic zero ?
4013	>	static <T> CompletableFuture<T> zero() {
4014	>	return failedFuture(new ZeroException());
4015	>	}
4016	>	// >=>
4017	>	static <T,U,V> Function<T, CompletableFuture<V>> compose
4018	>	(Function<T, CompletableFuture<U>> f,
4019	>	Function<U, CompletableFuture<V>> g) {
4020	>	return (x) -> f.apply(x).thenCompose(g);
4021	>	}
4022	>
4023	>	static void assertZero(CompletableFuture<?> f) {
4024	>	try {
4025	>	f.getNow(null);
4026	>	throw new AssertionFailedError("should throw");
4027	>	} catch (CompletionException success) {
4028	>	assertTrue(success.getCause() instanceof ZeroException);
4029	>	}
4030	>	}
4031	>
4032	>	static <T> void assertFutureEquals(CompletableFuture<T> f,
4033	>	CompletableFuture<T> g) {
4034	>	T fval = null, gval = null;
4035	>	Throwable fex = null, gex = null;
4036	>
4037	>	try { fval = f.get(); }
4038	>	catch (ExecutionException ex) { fex = ex.getCause(); }
4039	>	catch (Throwable ex) { fex = ex; }
4040	>
4041	>	try { gval = g.get(); }
4042	>	catch (ExecutionException ex) { gex = ex.getCause(); }
4043	>	catch (Throwable ex) { gex = ex; }
4044	>
4045	>	if (fex != null || gex != null)
4046	>	assertSame(fex.getClass(), gex.getClass());
4047	>	else
4048	>	assertEquals(fval, gval);
4049	>	}
4050	>
4051	>	static class PlusFuture<T> extends CompletableFuture<T> {
4052	>	AtomicReference<Throwable> firstFailure = new AtomicReference<>(null);
4053	>	}
4054	>
4055	>	/** Implements "monadic plus". */
4056	>	static <T> CompletableFuture<T> plus(CompletableFuture<? extends T> f,
4057	>	CompletableFuture<? extends T> g) {
4058	>	PlusFuture<T> plus = new PlusFuture<T>();
4059	>	BiConsumer<T, Throwable> action = (T result, Throwable ex) -> {
4060	>	try {
4061	>	if (ex == null) {
4062	>	if (plus.complete(result))
4063	>	if (plus.firstFailure.get() != null)
4064	>	plus.firstFailure.set(null);
4065	>	}
4066	>	else if (plus.firstFailure.compareAndSet(null, ex)) {
4067	>	if (plus.isDone())
4068	>	plus.firstFailure.set(null);
4069	>	}
4070	>	else {
4071	>	// first failure has precedence
4072	>	Throwable first = plus.firstFailure.getAndSet(null);
4073	>
4074	>	// may fail with "Self-suppression not permitted"
4075	>	try { first.addSuppressed(ex); }
4076	>	catch (Exception ignored) {}
4077	>
4078	>	plus.completeExceptionally(first);
4079	>	}
4080	>	} catch (Throwable unexpected) {
4081	>	plus.completeExceptionally(unexpected);
4082	>	}
4083	>	};
4084	>	f.whenComplete(action);
4085	>	g.whenComplete(action);
4086	>	return plus;
4087	>	}
4088	>	}
4089	>
4090	>	/**
4091	>	* CompletableFuture is an additive monad - sort of.
4092	>	* https://en.wikipedia.org/wiki/Monad_(functional_programming)#Additive_monads
4093	>	*/
4094	>	public void testAdditiveMonad() throws Throwable {
4095	>	Function<Long, CompletableFuture<Long>> unit = Monad::unit;
4096	>	CompletableFuture<Long> zero = Monad.zero();
4097	>
4098	>	// Some mutually non-commutative functions
4099	>	Function<Long, CompletableFuture<Long>> triple
4100	>	= (x) -> Monad.unit(3 * x);
4101	>	Function<Long, CompletableFuture<Long>> inc
4102	>	= (x) -> Monad.unit(x + 1);
4103	>
4104	>	// unit is a right identity: m >>= unit === m
4105	>	Monad.assertFutureEquals(inc.apply(5L).thenCompose(unit),
4106	>	inc.apply(5L));
4107	>	// unit is a left identity: (unit x) >>= f === f x
4108	>	Monad.assertFutureEquals(unit.apply(5L).thenCompose(inc),
4109	>	inc.apply(5L));
4110	>
4111	>	// associativity: (m >>= f) >>= g === m >>= ( \x -> (f x >>= g) )
4112	>	Monad.assertFutureEquals(
4113	>	unit.apply(5L).thenCompose(inc).thenCompose(triple),
4114	>	unit.apply(5L).thenCompose((x) -> inc.apply(x).thenCompose(triple)));
4115	>
4116	>	// The case for CompletableFuture as an additive monad is weaker...
4117	>
4118	>	// zero is a monadic zero
4119	>	Monad.assertZero(zero);
4120	>
4121	>	// left zero: zero >>= f === zero
4122	>	Monad.assertZero(zero.thenCompose(inc));
4123	>	// right zero: f >>= (\x -> zero) === zero
4124	>	Monad.assertZero(inc.apply(5L).thenCompose((x) -> zero));
4125	>
4126	>	// f plus zero === f
4127	>	Monad.assertFutureEquals(Monad.unit(5L),
4128	>	Monad.plus(Monad.unit(5L), zero));
4129	>	// zero plus f === f
4130	>	Monad.assertFutureEquals(Monad.unit(5L),
4131	>	Monad.plus(zero, Monad.unit(5L)));
4132	>	// zero plus zero === zero
4133	>	Monad.assertZero(Monad.plus(zero, zero));
4134	>	{
4135	>	CompletableFuture<Long> f = Monad.plus(Monad.unit(5L),
4136	>	Monad.unit(8L));
4137	>	// non-determinism
4138	>	assertTrue(f.get() == 5L || f.get() == 8L);
4139	>	}
4140	>
4141	>	CompletableFuture<Long> godot = new CompletableFuture<>();
4142	>	// f plus godot === f (doesn't wait for godot)
4143	>	Monad.assertFutureEquals(Monad.unit(5L),
4144	>	Monad.plus(Monad.unit(5L), godot));
4145	>	// godot plus f === f (doesn't wait for godot)
4146	>	Monad.assertFutureEquals(Monad.unit(5L),
4147	>	Monad.plus(godot, Monad.unit(5L)));
4148	>	}
4149	>
4150	>	/** Test long recursive chains of CompletableFutures with cascading completions */
4151	>	public void testRecursiveChains() throws Throwable {
4152	>	for (ExecutionMode m : ExecutionMode.values())
4153	>	for (boolean addDeadEnds : new boolean[] { true, false })
4154	>	{
4155	>	final int val = 42;
4156	>	final int n = expensiveTests ? 1_000 : 2;
4157	>	CompletableFuture<Integer> head = new CompletableFuture<>();
4158	>	CompletableFuture<Integer> tail = head;
4159	>	for (int i = 0; i < n; i++) {
4160	>	if (addDeadEnds) m.thenApply(tail, v -> v + 1);
4161	>	tail = m.thenApply(tail, v -> v + 1);
4162	>	if (addDeadEnds) m.applyToEither(tail, tail, v -> v + 1);
4163	>	tail = m.applyToEither(tail, tail, v -> v + 1);
4164	>	if (addDeadEnds) m.thenCombine(tail, tail, (v, w) -> v + 1);
4165	>	tail = m.thenCombine(tail, tail, (v, w) -> v + 1);
4166	>	}
4167	>	head.complete(val);
4168	>	assertEquals(val + 3 * n, (int) tail.join());
4169	>	}}
4170	>
4171	>	/**
4172	>	* A single CompletableFuture with many dependents.
4173	>	* A demo of scalability - runtime is O(n).
4174	>	*/
4175	>	public void testManyDependents() throws Throwable {
4176	>	final int n = expensiveTests ? 1_000_000 : 10;
4177	>	final CompletableFuture<Void> head = new CompletableFuture<>();
4178	>	final CompletableFuture<Void> complete = CompletableFuture.completedFuture((Void)null);
4179	>	final AtomicInteger count = new AtomicInteger(0);
4180	>	for (int i = 0; i < n; i++) {
4181	>	head.thenRun(() -> count.getAndIncrement());
4182	>	head.thenAccept((x) -> count.getAndIncrement());
4183	>	head.thenApply((x) -> count.getAndIncrement());
4184	>
4185	>	head.runAfterBoth(complete, () -> count.getAndIncrement());
4186	>	head.thenAcceptBoth(complete, (x, y) -> count.getAndIncrement());
4187	>	head.thenCombine(complete, (x, y) -> count.getAndIncrement());
4188	>	complete.runAfterBoth(head, () -> count.getAndIncrement());
4189	>	complete.thenAcceptBoth(head, (x, y) -> count.getAndIncrement());
4190	>	complete.thenCombine(head, (x, y) -> count.getAndIncrement());
4191	>
4192	>	head.runAfterEither(new CompletableFuture<Void>(), () -> count.getAndIncrement());
4193	>	head.acceptEither(new CompletableFuture<Void>(), (x) -> count.getAndIncrement());
4194	>	head.applyToEither(new CompletableFuture<Void>(), (x) -> count.getAndIncrement());
4195	>	new CompletableFuture<Void>().runAfterEither(head, () -> count.getAndIncrement());
4196	>	new CompletableFuture<Void>().acceptEither(head, (x) -> count.getAndIncrement());
4197	>	new CompletableFuture<Void>().applyToEither(head, (x) -> count.getAndIncrement());
4198	>	}
4199	>	head.complete(null);
4200	>	assertEquals(5 * 3 * n, count.get());
4201	>	}
4202	>
4203	>	/** ant -Dvmoptions=-Xmx8m -Djsr166.expensiveTests=true -Djsr166.tckTestClass=CompletableFutureTest tck */
4204	>	public void testCoCompletionGarbageRetention() throws Throwable {
4205	>	final int n = expensiveTests ? 1_000_000 : 10;
4206	>	final CompletableFuture<Integer> incomplete = new CompletableFuture<>();
4207	>	CompletableFuture<Integer> f;
4208	>	for (int i = 0; i < n; i++) {
4209	>	f = new CompletableFuture<>();
4210	>	f.runAfterEither(incomplete, () -> {});
4211	>	f.complete(null);
4212	>
4213	>	f = new CompletableFuture<>();
4214	>	f.acceptEither(incomplete, (x) -> {});
4215	>	f.complete(null);
4216	>
4217	>	f = new CompletableFuture<>();
4218	>	f.applyToEither(incomplete, (x) -> x);
4219	>	f.complete(null);
4220	>
4221	>	f = new CompletableFuture<>();
4222	>	CompletableFuture.anyOf(new CompletableFuture<?>[] { f, incomplete });
4223	>	f.complete(null);
4224	>	}
4225	>
4226	>	for (int i = 0; i < n; i++) {
4227	>	f = new CompletableFuture<>();
4228	>	incomplete.runAfterEither(f, () -> {});
4229	>	f.complete(null);
4230	>
4231	>	f = new CompletableFuture<>();
4232	>	incomplete.acceptEither(f, (x) -> {});
4233	>	f.complete(null);
4234	>
4235	>	f = new CompletableFuture<>();
4236	>	incomplete.applyToEither(f, (x) -> x);
4237	>	f.complete(null);
4238	>
4239	>	f = new CompletableFuture<>();
4240	>	CompletableFuture.anyOf(new CompletableFuture<?>[] { incomplete, f });
4241	>	f.complete(null);
4242	>	}
4243	>	}
4244	>
4245	>	/**
4246	>	* Reproduction recipe for:
4247	>	* 8160402: Garbage retention with CompletableFuture.anyOf
4248	>	* cvs update -D '2016-05-01' ./src/main/java/util/concurrent/CompletableFuture.java && ant -Dvmoptions=-Xmx8m -Djsr166.expensiveTests=true -Djsr166.tckTestClass=CompletableFutureTest -Djsr166.methodFilter=testAnyOfGarbageRetention tck; cvs update -A
4249	>	*/
4250	>	public void testAnyOfGarbageRetention() throws Throwable {
4251	>	for (Integer v : new Integer[] { 1, null })
4252	>	{
4253	>	final int n = expensiveTests ? 100_000 : 10;
4254	>	CompletableFuture<Integer>[] fs
4255	>	= (CompletableFuture<Integer>[]) new CompletableFuture<?>[100];
4256	>	for (int i = 0; i < fs.length; i++)
4257	>	fs[i] = new CompletableFuture<>();
4258	>	fs[fs.length - 1].complete(v);
4259	>	for (int i = 0; i < n; i++)
4260	>	checkCompletedNormally(CompletableFuture.anyOf(fs), v);
4261	>	}}
4262	>
4263	>	/**
4264	>	* Checks for garbage retention with allOf.
4265	>	*
4266	>	* As of 2016-07, fails with OOME:
4267	>	* ant -Dvmoptions=-Xmx8m -Djsr166.expensiveTests=true -Djsr166.tckTestClass=CompletableFutureTest -Djsr166.methodFilter=testCancelledAllOfGarbageRetention tck
4268	>	*/
4269	>	public void testCancelledAllOfGarbageRetention() throws Throwable {
4270	>	final int n = expensiveTests ? 100_000 : 10;
4271	>	CompletableFuture<Integer>[] fs
4272	>	= (CompletableFuture<Integer>[]) new CompletableFuture<?>[100];
4273	>	for (int i = 0; i < fs.length; i++)
4274	>	fs[i] = new CompletableFuture<>();
4275	>	for (int i = 0; i < n; i++)
4276	>	assertTrue(CompletableFuture.allOf(fs).cancel(false));
4277	>	}
4278	>
4279	>	/**
4280	>	* Checks for garbage retention when a dependent future is
4281	>	* cancelled and garbage-collected.
4282	>	* 8161600: Garbage retention when source CompletableFutures are never completed
4283	>	*
4284	>	* As of 2016-07, fails with OOME:
4285	>	* ant -Dvmoptions=-Xmx8m -Djsr166.expensiveTests=true -Djsr166.tckTestClass=CompletableFutureTest -Djsr166.methodFilter=testCancelledGarbageRetention tck
4286	>	*/
4287	>	public void testCancelledGarbageRetention() throws Throwable {
4288	>	final int n = expensiveTests ? 100_000 : 10;
4289	>	CompletableFuture<Integer> neverCompleted = new CompletableFuture<>();
4290	>	for (int i = 0; i < n; i++)
4291	>	assertTrue(neverCompleted.thenRun(() -> {}).cancel(true));
4292	>	}
4293	>
4294	>	//     static <U> U join(CompletionStage<U> stage) {
4295	>	//         CompletableFuture<U> f = new CompletableFuture<>();
4296	>	//         stage.whenComplete((v, ex) -> {
4297	>	//             if (ex != null) f.completeExceptionally(ex); else f.complete(v);
4298	>	//         });
4299	>	//         return f.join();
4300	>	//     }
4301	>
4302	>	//     static <U> boolean isDone(CompletionStage<U> stage) {
4303	>	//         CompletableFuture<U> f = new CompletableFuture<>();
4304	>	//         stage.whenComplete((v, ex) -> {
4305	>	//             if (ex != null) f.completeExceptionally(ex); else f.complete(v);
4306	>	//         });
4307	>	//         return f.isDone();
4308	>	//     }
4309	>
4310	>	//     static <U> U join2(CompletionStage<U> stage) {
4311	>	//         return stage.toCompletableFuture().copy().join();
4312	>	//     }
4313	>
4314	>	//     static <U> boolean isDone2(CompletionStage<U> stage) {
4315	>	//         return stage.toCompletableFuture().copy().isDone();
4316	>	//     }
4317
4318		}

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