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Comparing jsr166/src/test/tck/CompletableFutureTest.java (file contents):
Revision 1.123 by jsr166, Tue Sep 8 19:45:35 2015 UTC vs.
Revision 1.198 by dl, Mon Sep 17 11:50:55 2018 UTC

#	Line 7 | Line 7
7
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;
#	Line 28 | Line 30 | import java.util.concurrent.ExecutionExc
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;
32	–	import java.util.concurrent.TimeUnit;
35		import java.util.concurrent.atomic.AtomicInteger;
36		import java.util.concurrent.atomic.AtomicReference;
37		import java.util.function.BiConsumer;
38		import java.util.function.BiFunction;
39		import java.util.function.Consumer;
40		import java.util.function.Function;
41	+	import java.util.function.Predicate;
42		import java.util.function.Supplier;
43
44		import junit.framework.Test;
#	Line 55 | Line 58 | public class CompletableFutureTest exten
58		void checkIncomplete(CompletableFuture<?> f) {
59		assertFalse(f.isDone());
60		assertFalse(f.isCancelled());
61	<	assertTrue(f.toString().contains("Not completed"));
61	>	assertTrue(f.toString().matches(".*\\[.*Not completed.*\\]"));
62	>
63	>	Object result = null;
64		try {
65	<	assertNull(f.getNow(null));
65	>	result = f.getNow(null);
66		} catch (Throwable fail) { threadUnexpectedException(fail); }
67	+	assertNull(result);
68	+
69		try {
70	<	f.get(0L, SECONDS);
70	>	f.get(randomExpiredTimeout(), randomTimeUnit());
71		shouldThrow();
72		}
73		catch (TimeoutException success) {}
74		catch (Throwable fail) { threadUnexpectedException(fail); }
75		}
76
77	<	<T> void checkCompletedNormally(CompletableFuture<T> f, T value) {
78	<	checkTimedGet(f, value);
77	>	<T> void checkCompletedNormally(CompletableFuture<T> f, T expectedValue) {
78	>	checkTimedGet(f, expectedValue);
79
80	+	assertEquals(expectedValue, f.join());
81	+	assertEquals(expectedValue, f.getNow(null));
82	+
83	+	T result = null;
84		try {
85	<	assertEquals(value, f.join());
75	<	} catch (Throwable fail) { threadUnexpectedException(fail); }
76	<	try {
77	<	assertEquals(value, f.getNow(null));
78	<	} catch (Throwable fail) { threadUnexpectedException(fail); }
79	<	try {
80	<	assertEquals(value, f.get());
85	>	result = f.get();
86		} catch (Throwable fail) { threadUnexpectedException(fail); }
87	+	assertEquals(expectedValue, result);
88	+
89		assertTrue(f.isDone());
90		assertFalse(f.isCancelled());
91		assertFalse(f.isCompletedExceptionally());
92	<	assertTrue(f.toString().contains("[Completed normally]"));
92	>	assertTrue(f.toString().matches(".*\\[.*Completed normally.*\\]"));
93		}
94
95		/**
96		* Returns the "raw" internal exceptional completion of f,
97		* without any additional wrapping with CompletionException.
98		*/
99	<	<U> Throwable exceptionalCompletion(CompletableFuture<U> f) {
100	<	// handle (and whenComplete) can distinguish between "direct"
101	<	// and "wrapped" exceptional completion
102	<	return f.handle((U u, Throwable t) -> t).join();
99	>	Throwable exceptionalCompletion(CompletableFuture<?> f) {
100	>	// handle (and whenComplete and exceptionally) can distinguish
101	>	// between "direct" and "wrapped" exceptional completion
102	>	return f.handle((u, t) -> t).join();
103		}
104
105		void checkCompletedExceptionally(CompletableFuture<?> f,
#	Line 138 | Line 145 | public class CompletableFutureTest exten
145		assertFalse(f.isCancelled());
146		assertTrue(f.isDone());
147		assertTrue(f.isCompletedExceptionally());
148	<	assertTrue(f.toString().contains("[Completed exceptionally]"));
148	>	assertTrue(f.toString().matches(".*\\[.*Completed exceptionally.*\\]"));
149		}
150
151		void checkCompletedWithWrappedCFException(CompletableFuture<?> f) {
152		checkCompletedExceptionally(f, true,
153	<	(t) -> assertTrue(t instanceof CFException));
153	>	t -> assertTrue(t instanceof CFException));
154		}
155
156		void checkCompletedWithWrappedCancellationException(CompletableFuture<?> f) {
157		checkCompletedExceptionally(f, true,
158	<	(t) -> assertTrue(t instanceof CancellationException));
158	>	t -> assertTrue(t instanceof CancellationException));
159		}
160
161		void checkCompletedWithTimeoutException(CompletableFuture<?> f) {
162		checkCompletedExceptionally(f, false,
163	<	(t) -> assertTrue(t instanceof TimeoutException));
163	>	t -> assertTrue(t instanceof TimeoutException));
164		}
165
166		void checkCompletedWithWrappedException(CompletableFuture<?> f,
167		Throwable ex) {
168	<	checkCompletedExceptionally(f, true, (t) -> assertSame(t, ex));
168	>	checkCompletedExceptionally(f, true, t -> assertSame(t, ex));
169		}
170
171		void checkCompletedExceptionally(CompletableFuture<?> f, Throwable ex) {
172	<	checkCompletedExceptionally(f, false, (t) -> assertSame(t, ex));
172	>	checkCompletedExceptionally(f, false, t -> assertSame(t, ex));
173		}
174
175		void checkCancelled(CompletableFuture<?> f) {
#	Line 193 | Line 200 | public class CompletableFutureTest exten
200		assertTrue(f.isDone());
201		assertTrue(f.isCompletedExceptionally());
202		assertTrue(f.isCancelled());
203	<	assertTrue(f.toString().contains("[Completed exceptionally]"));
203	>	assertTrue(f.toString().matches(".*\\[.*Completed exceptionally.*\\]"));
204		}
205
206		/**
#	Line 292 | Line 299 | public class CompletableFutureTest exten
299		}
300
301		f = new CompletableFuture<>();
302	<	f.completeExceptionally(ex = new CFException());
302	>	f.completeExceptionally(new CFException());
303		f.obtrudeValue(v1);
304		checkCompletedNormally(f, v1);
305		f.obtrudeException(ex = new CFException());
#	Line 329 | Line 336 | public class CompletableFutureTest exten
336		/**
337		* toString indicates current completion state
338		*/
339	<	public void testToString() {
340	<	CompletableFuture<String> f;
341	<
342	<	f = new CompletableFuture<String>();
343	<	assertTrue(f.toString().contains("[Not completed]"));
339	>	public void testToString_incomplete() {
340	>	CompletableFuture<String> f = new CompletableFuture<>();
341	>	assertTrue(f.toString().matches(".*\\[.*Not completed.*\\]"));
342	>	if (testImplementationDetails)
343	>	assertEquals(identityString(f) + "[Not completed]",
344	>	f.toString());
345	>	}
346
347	+	public void testToString_normal() {
348	+	CompletableFuture<String> f = new CompletableFuture<>();
349		assertTrue(f.complete("foo"));
350	<	assertTrue(f.toString().contains("[Completed normally]"));
350	>	assertTrue(f.toString().matches(".*\\[.*Completed normally.*\\]"));
351	>	if (testImplementationDetails)
352	>	assertEquals(identityString(f) + "[Completed normally]",
353	>	f.toString());
354	>	}
355
356	<	f = new CompletableFuture<String>();
356	>	public void testToString_exception() {
357	>	CompletableFuture<String> f = new CompletableFuture<>();
358		assertTrue(f.completeExceptionally(new IndexOutOfBoundsException()));
359	<	assertTrue(f.toString().contains("[Completed exceptionally]"));
359	>	assertTrue(f.toString().matches(".*\\[.*Completed exceptionally.*\\]"));
360	>	if (testImplementationDetails)
361	>	assertTrue(f.toString().startsWith(
362	>	identityString(f) + "[Completed exceptionally: "));
363	>	}
364
365	+	public void testToString_cancelled() {
366		for (boolean mayInterruptIfRunning : new boolean[] { true, false }) {
367	<	f = new CompletableFuture<String>();
367	>	CompletableFuture<String> f = new CompletableFuture<>();
368		assertTrue(f.cancel(mayInterruptIfRunning));
369	<	assertTrue(f.toString().contains("[Completed exceptionally]"));
369	>	assertTrue(f.toString().matches(".*\\[.*Completed exceptionally.*\\]"));
370	>	if (testImplementationDetails)
371	>	assertTrue(f.toString().startsWith(
372	>	identityString(f) + "[Completed exceptionally: "));
373		}
374		}
375
#	Line 357 | Line 381 | public class CompletableFutureTest exten
381		checkCompletedNormally(f, "test");
382		}
383
384	<	abstract class CheckedAction {
384	>	abstract static class CheckedAction {
385		int invocationCount = 0;
386		final ExecutionMode m;
387		CheckedAction(ExecutionMode m) { this.m = m; }
#	Line 369 | Line 393 | public class CompletableFutureTest exten
393		void assertInvoked() { assertEquals(1, invocationCount); }
394		}
395
396	<	abstract class CheckedIntegerAction extends CheckedAction {
396	>	abstract static class CheckedIntegerAction extends CheckedAction {
397		Integer value;
398		CheckedIntegerAction(ExecutionMode m) { super(m); }
399		void assertValue(Integer expected) {
#	Line 378 | Line 402 | public class CompletableFutureTest exten
402		}
403		}
404
405	<	class IntegerSupplier extends CheckedAction
405	>	static class IntegerSupplier extends CheckedAction
406		implements Supplier<Integer>
407		{
408		final Integer value;
#	Line 397 | Line 421 | public class CompletableFutureTest exten
421		return (x == null) ? null : x + 1;
422		}
423
424	<	class NoopConsumer extends CheckedIntegerAction
424	>	static class NoopConsumer extends CheckedIntegerAction
425		implements Consumer<Integer>
426		{
427		NoopConsumer(ExecutionMode m) { super(m); }
#	Line 407 | Line 431 | public class CompletableFutureTest exten
431		}
432		}
433
434	<	class IncFunction extends CheckedIntegerAction
434	>	static class IncFunction extends CheckedIntegerAction
435		implements Function<Integer,Integer>
436		{
437		IncFunction(ExecutionMode m) { super(m); }
#	Line 425 | Line 449 | public class CompletableFutureTest exten
449		- ((y == null) ? 99 : y.intValue());
450		}
451
452	<	class SubtractAction extends CheckedIntegerAction
452	>	static class SubtractAction extends CheckedIntegerAction
453		implements BiConsumer<Integer, Integer>
454		{
455		SubtractAction(ExecutionMode m) { super(m); }
#	Line 435 | Line 459 | public class CompletableFutureTest exten
459		}
460		}
461
462	<	class SubtractFunction extends CheckedIntegerAction
462	>	static class SubtractFunction extends CheckedIntegerAction
463		implements BiFunction<Integer, Integer, Integer>
464		{
465		SubtractFunction(ExecutionMode m) { super(m); }
#	Line 445 | Line 469 | public class CompletableFutureTest exten
469		}
470		}
471
472	<	class Noop extends CheckedAction implements Runnable {
472	>	static class Noop extends CheckedAction implements Runnable {
473		Noop(ExecutionMode m) { super(m); }
474		public void run() {
475		invoked();
476		}
477		}
478
479	<	class FailingSupplier extends CheckedAction
479	>	static class FailingSupplier extends CheckedAction
480		implements Supplier<Integer>
481		{
482	<	FailingSupplier(ExecutionMode m) { super(m); }
482	>	final CFException ex;
483	>	FailingSupplier(ExecutionMode m) { super(m); ex = new CFException(); }
484		public Integer get() {
485		invoked();
486	<	throw new CFException();
486	>	throw ex;
487		}
488		}
489
490	<	class FailingConsumer extends CheckedIntegerAction
490	>	static class FailingConsumer extends CheckedIntegerAction
491		implements Consumer<Integer>
492		{
493	<	FailingConsumer(ExecutionMode m) { super(m); }
493	>	final CFException ex;
494	>	FailingConsumer(ExecutionMode m) { super(m); ex = new CFException(); }
495		public void accept(Integer x) {
496		invoked();
497		value = x;
498	<	throw new CFException();
498	>	throw ex;
499		}
500		}
501
502	<	class FailingBiConsumer extends CheckedIntegerAction
502	>	static class FailingBiConsumer extends CheckedIntegerAction
503		implements BiConsumer<Integer, Integer>
504		{
505	<	FailingBiConsumer(ExecutionMode m) { super(m); }
505	>	final CFException ex;
506	>	FailingBiConsumer(ExecutionMode m) { super(m); ex = new CFException(); }
507		public void accept(Integer x, Integer y) {
508		invoked();
509		value = subtract(x, y);
510	<	throw new CFException();
510	>	throw ex;
511		}
512		}
513
514	<	class FailingFunction extends CheckedIntegerAction
514	>	static class FailingFunction extends CheckedIntegerAction
515		implements Function<Integer, Integer>
516		{
517	<	FailingFunction(ExecutionMode m) { super(m); }
517	>	final CFException ex;
518	>	FailingFunction(ExecutionMode m) { super(m); ex = new CFException(); }
519		public Integer apply(Integer x) {
520		invoked();
521		value = x;
522	<	throw new CFException();
522	>	throw ex;
523		}
524		}
525
526	<	class FailingBiFunction extends CheckedIntegerAction
526	>	static class FailingBiFunction extends CheckedIntegerAction
527		implements BiFunction<Integer, Integer, Integer>
528		{
529	<	FailingBiFunction(ExecutionMode m) { super(m); }
529	>	final CFException ex;
530	>	FailingBiFunction(ExecutionMode m) { super(m); ex = new CFException(); }
531		public Integer apply(Integer x, Integer y) {
532		invoked();
533		value = subtract(x, y);
534	<	throw new CFException();
534	>	throw ex;
535		}
536		}
537
538	<	class FailingRunnable extends CheckedAction implements Runnable {
539	<	FailingRunnable(ExecutionMode m) { super(m); }
538	>	static class FailingRunnable extends CheckedAction implements Runnable {
539	>	final CFException ex;
540	>	FailingRunnable(ExecutionMode m) { super(m); ex = new CFException(); }
541		public void run() {
542		invoked();
543	<	throw new CFException();
543	>	throw ex;
544		}
545		}
546
547	<	class CompletableFutureInc extends CheckedIntegerAction
547	>	static class CompletableFutureInc extends CheckedIntegerAction
548		implements Function<Integer, CompletableFuture<Integer>>
549		{
550		CompletableFutureInc(ExecutionMode m) { super(m); }
#	Line 527 | Line 557 | public class CompletableFutureTest exten
557		}
558		}
559
560	<	class FailingCompletableFutureFunction extends CheckedIntegerAction
560	>	static class FailingExceptionalCompletableFutureFunction extends CheckedAction
561	>	implements Function<Throwable, CompletableFuture<Integer>>
562	>	{
563	>	final CFException ex;
564	>	FailingExceptionalCompletableFutureFunction(ExecutionMode m) { super(m); ex = new CFException(); }
565	>	public CompletableFuture<Integer> apply(Throwable x) {
566	>	invoked();
567	>	throw ex;
568	>	}
569	>	}
570	>
571	>	static class ExceptionalCompletableFutureFunction extends CheckedAction
572	>	implements Function<Throwable, CompletionStage<Integer>> {
573	>	final Integer value = 3;
574	>	ExceptionalCompletableFutureFunction(ExecutionMode m) { super(m); }
575	>	public CompletionStage<Integer> apply(Throwable x) {
576	>	invoked();
577	>	CompletableFuture<Integer> d = new CompletableFuture<Integer>();
578	>	d.complete(value);
579	>	return d;
580	>	}
581	>	}
582	>
583	>	static class FailingCompletableFutureFunction extends CheckedIntegerAction
584		implements Function<Integer, CompletableFuture<Integer>>
585		{
586	<	FailingCompletableFutureFunction(ExecutionMode m) { super(m); }
586	>	final CFException ex;
587	>	FailingCompletableFutureFunction(ExecutionMode m) { super(m); ex = new CFException(); }
588		public CompletableFuture<Integer> apply(Integer x) {
589		invoked();
590		value = x;
591	<	throw new CFException();
591	>	throw ex;
592	>	}
593	>	}
594	>
595	>	static class CountingRejectingExecutor implements Executor {
596	>	final RejectedExecutionException ex = new RejectedExecutionException();
597	>	final AtomicInteger count = new AtomicInteger(0);
598	>	public void execute(Runnable r) {
599	>	count.getAndIncrement();
600	>	throw ex;
601		}
602		}
603
#	Line 632 | Line 695 | public class CompletableFutureTest exten
695		Function<? super T,U> a) {
696		return f.applyToEither(g, a);
697		}
698	+	public <T> CompletableFuture<T> exceptionally
699	+	(CompletableFuture<T> f,
700	+	Function<Throwable, ? extends T> fn) {
701	+	return f.exceptionally(fn);
702	+	}
703	+	public <T> CompletableFuture<T> exceptionallyCompose
704	+	(CompletableFuture<T> f, Function<Throwable, ? extends CompletionStage<T>> fn) {
705	+	return f.exceptionallyCompose(fn);
706	+	}
707		},
636	–
708		ASYNC {
709		public void checkExecutionMode() {
710		assertEquals(defaultExecutorIsCommonPool,
#	Line 706 | Line 777 | public class CompletableFutureTest exten
777		Function<? super T,U> a) {
778		return f.applyToEitherAsync(g, a);
779		}
780	+	public <T> CompletableFuture<T> exceptionally
781	+	(CompletableFuture<T> f,
782	+	Function<Throwable, ? extends T> fn) {
783	+	return f.exceptionallyAsync(fn);
784	+	}
785	+
786	+	public <T> CompletableFuture<T> exceptionallyCompose
787	+	(CompletableFuture<T> f, Function<Throwable, ? extends CompletionStage<T>> fn) {
788	+	return f.exceptionallyComposeAsync(fn);
789	+	}
790	+
791		},
792
793		EXECUTOR {
#	Line 779 | Line 861 | public class CompletableFutureTest exten
861		Function<? super T,U> a) {
862		return f.applyToEitherAsync(g, a, new ThreadExecutor());
863		}
864	+	public <T> CompletableFuture<T> exceptionally
865	+	(CompletableFuture<T> f,
866	+	Function<Throwable, ? extends T> fn) {
867	+	return f.exceptionallyAsync(fn, new ThreadExecutor());
868	+	}
869	+	public <T> CompletableFuture<T> exceptionallyCompose
870	+	(CompletableFuture<T> f, Function<Throwable, ? extends CompletionStage<T>> fn) {
871	+	return f.exceptionallyComposeAsync(fn, new ThreadExecutor());
872	+	}
873	+
874		};
875
876		public abstract void checkExecutionMode();
#	Line 821 | Line 913 | public class CompletableFutureTest exten
913		(CompletableFuture<T> f,
914		CompletionStage<? extends T> g,
915		Function<? super T,U> a);
916	+	public abstract <T> CompletableFuture<T> exceptionally
917	+	(CompletableFuture<T> f,
918	+	Function<Throwable, ? extends T> fn);
919	+	public abstract <T> CompletableFuture<T> exceptionallyCompose
920	+	(CompletableFuture<T> f,
921	+	Function<Throwable, ? extends CompletionStage<T>> fn);
922		}
923
924		/**
#	Line 828 | Line 926 | public class CompletableFutureTest exten
926		* normally, and source result is propagated
927		*/
928		public void testExceptionally_normalCompletion() {
929	+	for (ExecutionMode m : ExecutionMode.values())
930		for (boolean createIncomplete : new boolean[] { true, false })
931		for (Integer v1 : new Integer[] { 1, null })
932		{
933		final AtomicInteger a = new AtomicInteger(0);
934		final CompletableFuture<Integer> f = new CompletableFuture<>();
935		if (!createIncomplete) assertTrue(f.complete(v1));
936	<	final CompletableFuture<Integer> g = f.exceptionally
937	<	((Throwable t) -> {
839	<	// Should not be called
936	>	final CompletableFuture<Integer> g = m.exceptionally
937	>	(f, (Throwable t) -> {
938		a.getAndIncrement();
939	<	throw new AssertionError();
939	>	threadFail("should not be called");
940	>	return null;            // unreached
941		});
942		if (createIncomplete) assertTrue(f.complete(v1));
943
#	Line 852 | Line 951 | public class CompletableFutureTest exten
951		* exception
952		*/
953		public void testExceptionally_exceptionalCompletion() {
954	+	for (ExecutionMode m : ExecutionMode.values())
955		for (boolean createIncomplete : new boolean[] { true, false })
956		for (Integer v1 : new Integer[] { 1, null })
957		{
#	Line 859 | Line 959 | public class CompletableFutureTest exten
959		final CFException ex = new CFException();
960		final CompletableFuture<Integer> f = new CompletableFuture<>();
961		if (!createIncomplete) f.completeExceptionally(ex);
962	<	final CompletableFuture<Integer> g = f.exceptionally
963	<	((Throwable t) -> {
964	<	ExecutionMode.SYNC.checkExecutionMode();
962	>	final CompletableFuture<Integer> g = m.exceptionally
963	>	(f, (Throwable t) -> {
964	>	m.checkExecutionMode();
965		threadAssertSame(t, ex);
966		a.getAndIncrement();
967		return v1;
#	Line 872 | Line 972 | public class CompletableFutureTest exten
972		assertEquals(1, a.get());
973		}}
974
975	+	/**
976	+	* If an "exceptionally action" throws an exception, it completes
977	+	* exceptionally with that exception
978	+	*/
979		public void testExceptionally_exceptionalCompletionActionFailed() {
980	+	for (ExecutionMode m : ExecutionMode.values())
981		for (boolean createIncomplete : new boolean[] { true, false })
982		{
983		final AtomicInteger a = new AtomicInteger(0);
#	Line 880 | Line 985 | public class CompletableFutureTest exten
985		final CFException ex2 = new CFException();
986		final CompletableFuture<Integer> f = new CompletableFuture<>();
987		if (!createIncomplete) f.completeExceptionally(ex1);
988	<	final CompletableFuture<Integer> g = f.exceptionally
989	<	((Throwable t) -> {
990	<	ExecutionMode.SYNC.checkExecutionMode();
988	>	final CompletableFuture<Integer> g = m.exceptionally
989	>	(f, (Throwable t) -> {
990	>	m.checkExecutionMode();
991		threadAssertSame(t, ex1);
992		a.getAndIncrement();
993		throw ex2;
#	Line 890 | Line 995 | public class CompletableFutureTest exten
995		if (createIncomplete) f.completeExceptionally(ex1);
996
997		checkCompletedWithWrappedException(g, ex2);
998	+	checkCompletedExceptionally(f, ex1);
999		assertEquals(1, a.get());
1000		}}
1001
#	Line 897 | Line 1003 | public class CompletableFutureTest exten
1003		* whenComplete action executes on normal completion, propagating
1004		* source result.
1005		*/
1006	<	public void testWhenComplete_normalCompletion1() {
1006	>	public void testWhenComplete_normalCompletion() {
1007		for (ExecutionMode m : ExecutionMode.values())
1008		for (boolean createIncomplete : new boolean[] { true, false })
1009		for (Integer v1 : new Integer[] { 1, null })
#	Line 907 | Line 1013 | public class CompletableFutureTest exten
1013		if (!createIncomplete) assertTrue(f.complete(v1));
1014		final CompletableFuture<Integer> g = m.whenComplete
1015		(f,
1016	<	(Integer x, Throwable t) -> {
1016	>	(Integer result, Throwable t) -> {
1017		m.checkExecutionMode();
1018	<	threadAssertSame(x, v1);
1018	>	threadAssertSame(result, v1);
1019		threadAssertNull(t);
1020		a.getAndIncrement();
1021		});
#	Line 934 | Line 1040 | public class CompletableFutureTest exten
1040		if (!createIncomplete) f.completeExceptionally(ex);
1041		final CompletableFuture<Integer> g = m.whenComplete
1042		(f,
1043	<	(Integer x, Throwable t) -> {
1043	>	(Integer result, Throwable t) -> {
1044		m.checkExecutionMode();
1045	<	threadAssertNull(x);
1045	>	threadAssertNull(result);
1046		threadAssertSame(t, ex);
1047		a.getAndIncrement();
1048		});
#	Line 961 | Line 1067 | public class CompletableFutureTest exten
1067		if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
1068		final CompletableFuture<Integer> g = m.whenComplete
1069		(f,
1070	<	(Integer x, Throwable t) -> {
1070	>	(Integer result, Throwable t) -> {
1071		m.checkExecutionMode();
1072	<	threadAssertNull(x);
1072	>	threadAssertNull(result);
1073		threadAssertTrue(t instanceof CancellationException);
1074		a.getAndIncrement();
1075		});
#	Line 978 | Line 1084 | public class CompletableFutureTest exten
1084		* If a whenComplete action throws an exception when triggered by
1085		* a normal completion, it completes exceptionally
1086		*/
1087	<	public void testWhenComplete_actionFailed() {
1087	>	public void testWhenComplete_sourceCompletedNormallyActionFailed() {
1088		for (boolean createIncomplete : new boolean[] { true, false })
1089		for (ExecutionMode m : ExecutionMode.values())
1090		for (Integer v1 : new Integer[] { 1, null })
#	Line 989 | Line 1095 | public class CompletableFutureTest exten
1095		if (!createIncomplete) assertTrue(f.complete(v1));
1096		final CompletableFuture<Integer> g = m.whenComplete
1097		(f,
1098	<	(Integer x, Throwable t) -> {
1098	>	(Integer result, Throwable t) -> {
1099		m.checkExecutionMode();
1100	<	threadAssertSame(x, v1);
1100	>	threadAssertSame(result, v1);
1101		threadAssertNull(t);
1102		a.getAndIncrement();
1103		throw ex;
#	Line 1006 | Line 1112 | public class CompletableFutureTest exten
1112		/**
1113		* If a whenComplete action throws an exception when triggered by
1114		* a source completion that also throws an exception, the source
1115	<	* exception takes precedence.
1115	>	* exception takes precedence (unlike handle)
1116		*/
1117	<	public void testWhenComplete_actionFailedSourceFailed() {
1117	>	public void testWhenComplete_sourceFailedActionFailed() {
1118		for (boolean createIncomplete : new boolean[] { true, false })
1119		for (ExecutionMode m : ExecutionMode.values())
1120		{
#	Line 1020 | Line 1126 | public class CompletableFutureTest exten
1126		if (!createIncomplete) f.completeExceptionally(ex1);
1127		final CompletableFuture<Integer> g = m.whenComplete
1128		(f,
1129	<	(Integer x, Throwable t) -> {
1129	>	(Integer result, Throwable t) -> {
1130		m.checkExecutionMode();
1131		threadAssertSame(t, ex1);
1132	<	threadAssertNull(x);
1132	>	threadAssertNull(result);
1133		a.getAndIncrement();
1134		throw ex2;
1135		});
#	Line 1031 | Line 1137 | public class CompletableFutureTest exten
1137
1138		checkCompletedWithWrappedException(g, ex1);
1139		checkCompletedExceptionally(f, ex1);
1140	+	if (testImplementationDetails) {
1141	+	assertEquals(1, ex1.getSuppressed().length);
1142	+	assertSame(ex2, ex1.getSuppressed()[0]);
1143	+	}
1144		assertEquals(1, a.get());
1145		}}
1146
#	Line 1048 | Line 1158 | public class CompletableFutureTest exten
1158		if (!createIncomplete) assertTrue(f.complete(v1));
1159		final CompletableFuture<Integer> g = m.handle
1160		(f,
1161	<	(Integer x, Throwable t) -> {
1161	>	(Integer result, Throwable t) -> {
1162		m.checkExecutionMode();
1163	<	threadAssertSame(x, v1);
1163	>	threadAssertSame(result, v1);
1164		threadAssertNull(t);
1165		a.getAndIncrement();
1166		return inc(v1);
#	Line 1077 | Line 1187 | public class CompletableFutureTest exten
1187		if (!createIncomplete) f.completeExceptionally(ex);
1188		final CompletableFuture<Integer> g = m.handle
1189		(f,
1190	<	(Integer x, Throwable t) -> {
1190	>	(Integer result, Throwable t) -> {
1191		m.checkExecutionMode();
1192	<	threadAssertNull(x);
1192	>	threadAssertNull(result);
1193		threadAssertSame(t, ex);
1194		a.getAndIncrement();
1195		return v1;
#	Line 1106 | Line 1216 | public class CompletableFutureTest exten
1216		if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
1217		final CompletableFuture<Integer> g = m.handle
1218		(f,
1219	<	(Integer x, Throwable t) -> {
1219	>	(Integer result, Throwable t) -> {
1220		m.checkExecutionMode();
1221	<	threadAssertNull(x);
1221	>	threadAssertNull(result);
1222		threadAssertTrue(t instanceof CancellationException);
1223		a.getAndIncrement();
1224		return v1;
#	Line 1121 | Line 1231 | public class CompletableFutureTest exten
1231		}}
1232
1233		/**
1234	<	* handle result completes exceptionally if action does
1234	>	* If a "handle action" throws an exception when triggered by
1235	>	* a normal completion, it completes exceptionally
1236		*/
1237	<	public void testHandle_sourceFailedActionFailed() {
1237	>	public void testHandle_sourceCompletedNormallyActionFailed() {
1238		for (ExecutionMode m : ExecutionMode.values())
1239		for (boolean createIncomplete : new boolean[] { true, false })
1240	+	for (Integer v1 : new Integer[] { 1, null })
1241		{
1242		final CompletableFuture<Integer> f = new CompletableFuture<>();
1243		final AtomicInteger a = new AtomicInteger(0);
1244	<	final CFException ex1 = new CFException();
1245	<	final CFException ex2 = new CFException();
1134	<	if (!createIncomplete) f.completeExceptionally(ex1);
1244	>	final CFException ex = new CFException();
1245	>	if (!createIncomplete) assertTrue(f.complete(v1));
1246		final CompletableFuture<Integer> g = m.handle
1247		(f,
1248	<	(Integer x, Throwable t) -> {
1248	>	(Integer result, Throwable t) -> {
1249		m.checkExecutionMode();
1250	<	threadAssertNull(x);
1251	<	threadAssertSame(ex1, t);
1250	>	threadAssertSame(result, v1);
1251	>	threadAssertNull(t);
1252		a.getAndIncrement();
1253	<	throw ex2;
1253	>	throw ex;
1254		});
1255	<	if (createIncomplete) f.completeExceptionally(ex1);
1255	>	if (createIncomplete) assertTrue(f.complete(v1));
1256
1257	<	checkCompletedWithWrappedException(g, ex2);
1258	<	checkCompletedExceptionally(f, ex1);
1257	>	checkCompletedWithWrappedException(g, ex);
1258	>	checkCompletedNormally(f, v1);
1259		assertEquals(1, a.get());
1260		}}
1261
1262	<	public void testHandle_sourceCompletedNormallyActionFailed() {
1263	<	for (ExecutionMode m : ExecutionMode.values())
1262	>	/**
1263	>	* If a "handle action" throws an exception when triggered by
1264	>	* a source completion that also throws an exception, the action
1265	>	* exception takes precedence (unlike whenComplete)
1266	>	*/
1267	>	public void testHandle_sourceFailedActionFailed() {
1268		for (boolean createIncomplete : new boolean[] { true, false })
1269	<	for (Integer v1 : new Integer[] { 1, null })
1269	>	for (ExecutionMode m : ExecutionMode.values())
1270		{
1156	–	final CompletableFuture<Integer> f = new CompletableFuture<>();
1271		final AtomicInteger a = new AtomicInteger(0);
1272	<	final CFException ex = new CFException();
1273	<	if (!createIncomplete) assertTrue(f.complete(v1));
1272	>	final CFException ex1 = new CFException();
1273	>	final CFException ex2 = new CFException();
1274	>	final CompletableFuture<Integer> f = new CompletableFuture<>();
1275	>
1276	>	if (!createIncomplete) f.completeExceptionally(ex1);
1277		final CompletableFuture<Integer> g = m.handle
1278		(f,
1279	<	(Integer x, Throwable t) -> {
1279	>	(Integer result, Throwable t) -> {
1280		m.checkExecutionMode();
1281	<	threadAssertSame(x, v1);
1282	<	threadAssertNull(t);
1281	>	threadAssertNull(result);
1282	>	threadAssertSame(ex1, t);
1283		a.getAndIncrement();
1284	<	throw ex;
1284	>	throw ex2;
1285		});
1286	<	if (createIncomplete) assertTrue(f.complete(v1));
1286	>	if (createIncomplete) f.completeExceptionally(ex1);
1287
1288	<	checkCompletedWithWrappedException(g, ex);
1289	<	checkCompletedNormally(f, v1);
1288	>	checkCompletedWithWrappedException(g, ex2);
1289	>	checkCompletedExceptionally(f, ex1);
1290		assertEquals(1, a.get());
1291		}}
1292
#	Line 1202 | Line 1319 | public class CompletableFutureTest exten
1319		{
1320		final FailingRunnable r = new FailingRunnable(m);
1321		final CompletableFuture<Void> f = m.runAsync(r);
1322	<	checkCompletedWithWrappedCFException(f);
1322	>	checkCompletedWithWrappedException(f, r.ex);
1323		r.assertInvoked();
1324		}}
1325
1326	+	@SuppressWarnings("FutureReturnValueIgnored")
1327	+	public void testRunAsync_rejectingExecutor() {
1328	+	CountingRejectingExecutor e = new CountingRejectingExecutor();
1329	+	try {
1330	+	CompletableFuture.runAsync(() -> {}, e);
1331	+	shouldThrow();
1332	+	} catch (Throwable t) {
1333	+	assertSame(e.ex, t);
1334	+	}
1335	+
1336	+	assertEquals(1, e.count.get());
1337	+	}
1338	+
1339		/**
1340		* supplyAsync completes with result of supplier
1341		*/
#	Line 1236 | Line 1366 | public class CompletableFutureTest exten
1366		{
1367		FailingSupplier r = new FailingSupplier(m);
1368		CompletableFuture<Integer> f = m.supplyAsync(r);
1369	<	checkCompletedWithWrappedCFException(f);
1369	>	checkCompletedWithWrappedException(f, r.ex);
1370		r.assertInvoked();
1371		}}
1372
1373	+	@SuppressWarnings("FutureReturnValueIgnored")
1374	+	public void testSupplyAsync_rejectingExecutor() {
1375	+	CountingRejectingExecutor e = new CountingRejectingExecutor();
1376	+	try {
1377	+	CompletableFuture.supplyAsync(() -> null, e);
1378	+	shouldThrow();
1379	+	} catch (Throwable t) {
1380	+	assertSame(e.ex, t);
1381	+	}
1382	+
1383	+	assertEquals(1, e.count.get());
1384	+	}
1385	+
1386		// seq completion methods
1387
1388		/**
#	Line 1358 | Line 1501 | public class CompletableFutureTest exten
1501		final CompletableFuture<Void> h4 = m.runAfterBoth(f, f, rs[4]);
1502		final CompletableFuture<Void> h5 = m.runAfterEither(f, f, rs[5]);
1503
1504	<	checkCompletedWithWrappedCFException(h0);
1505	<	checkCompletedWithWrappedCFException(h1);
1506	<	checkCompletedWithWrappedCFException(h2);
1507	<	checkCompletedWithWrappedCFException(h3);
1508	<	checkCompletedWithWrappedCFException(h4);
1509	<	checkCompletedWithWrappedCFException(h5);
1504	>	checkCompletedWithWrappedException(h0, rs[0].ex);
1505	>	checkCompletedWithWrappedException(h1, rs[1].ex);
1506	>	checkCompletedWithWrappedException(h2, rs[2].ex);
1507	>	checkCompletedWithWrappedException(h3, rs[3].ex);
1508	>	checkCompletedWithWrappedException(h4, rs[4].ex);
1509	>	checkCompletedWithWrappedException(h5, rs[5].ex);
1510		checkCompletedNormally(f, v1);
1511		}}
1512
#	Line 1462 | Line 1605 | public class CompletableFutureTest exten
1605		final CompletableFuture<Integer> h2 = m.thenApply(f, rs[2]);
1606		final CompletableFuture<Integer> h3 = m.applyToEither(f, f, rs[3]);
1607
1608	<	checkCompletedWithWrappedCFException(h0);
1609	<	checkCompletedWithWrappedCFException(h1);
1610	<	checkCompletedWithWrappedCFException(h2);
1611	<	checkCompletedWithWrappedCFException(h3);
1608	>	checkCompletedWithWrappedException(h0, rs[0].ex);
1609	>	checkCompletedWithWrappedException(h1, rs[1].ex);
1610	>	checkCompletedWithWrappedException(h2, rs[2].ex);
1611	>	checkCompletedWithWrappedException(h3, rs[3].ex);
1612		checkCompletedNormally(f, v1);
1613		}}
1614
#	Line 1564 | Line 1707 | public class CompletableFutureTest exten
1707		final CompletableFuture<Void> h2 = m.thenAccept(f, rs[2]);
1708		final CompletableFuture<Void> h3 = m.acceptEither(f, f, rs[3]);
1709
1710	<	checkCompletedWithWrappedCFException(h0);
1711	<	checkCompletedWithWrappedCFException(h1);
1712	<	checkCompletedWithWrappedCFException(h2);
1713	<	checkCompletedWithWrappedCFException(h3);
1710	>	checkCompletedWithWrappedException(h0, rs[0].ex);
1711	>	checkCompletedWithWrappedException(h1, rs[1].ex);
1712	>	checkCompletedWithWrappedException(h2, rs[2].ex);
1713	>	checkCompletedWithWrappedException(h3, rs[3].ex);
1714		checkCompletedNormally(f, v1);
1715		}}
1716
#	Line 1729 | Line 1872 | public class CompletableFutureTest exten
1872		assertTrue(snd.complete(w2));
1873		final CompletableFuture<Integer> h3 = m.thenCombine(f, g, r3);
1874
1875	<	checkCompletedWithWrappedCFException(h1);
1876	<	checkCompletedWithWrappedCFException(h2);
1877	<	checkCompletedWithWrappedCFException(h3);
1875	>	checkCompletedWithWrappedException(h1, r1.ex);
1876	>	checkCompletedWithWrappedException(h2, r2.ex);
1877	>	checkCompletedWithWrappedException(h3, r3.ex);
1878		r1.assertInvoked();
1879		r2.assertInvoked();
1880		r3.assertInvoked();
#	Line 1893 | Line 2036 | public class CompletableFutureTest exten
2036		assertTrue(snd.complete(w2));
2037		final CompletableFuture<Void> h3 = m.thenAcceptBoth(f, g, r3);
2038
2039	<	checkCompletedWithWrappedCFException(h1);
2040	<	checkCompletedWithWrappedCFException(h2);
2041	<	checkCompletedWithWrappedCFException(h3);
2039	>	checkCompletedWithWrappedException(h1, r1.ex);
2040	>	checkCompletedWithWrappedException(h2, r2.ex);
2041	>	checkCompletedWithWrappedException(h3, r3.ex);
2042		r1.assertInvoked();
2043		r2.assertInvoked();
2044		r3.assertInvoked();
#	Line 2057 | Line 2200 | public class CompletableFutureTest exten
2200		assertTrue(snd.complete(w2));
2201		final CompletableFuture<Void> h3 = m.runAfterBoth(f, g, r3);
2202
2203	<	checkCompletedWithWrappedCFException(h1);
2204	<	checkCompletedWithWrappedCFException(h2);
2205	<	checkCompletedWithWrappedCFException(h3);
2203	>	checkCompletedWithWrappedException(h1, r1.ex);
2204	>	checkCompletedWithWrappedException(h2, r2.ex);
2205	>	checkCompletedWithWrappedException(h3, r3.ex);
2206		r1.assertInvoked();
2207		r2.assertInvoked();
2208		r3.assertInvoked();
#	Line 2349 | Line 2492 | public class CompletableFutureTest exten
2492		f.complete(v1);
2493		final CompletableFuture<Integer> h2 = m.applyToEither(f, g, rs[2]);
2494		final CompletableFuture<Integer> h3 = m.applyToEither(g, f, rs[3]);
2495	<	checkCompletedWithWrappedCFException(h0);
2496	<	checkCompletedWithWrappedCFException(h1);
2497	<	checkCompletedWithWrappedCFException(h2);
2498	<	checkCompletedWithWrappedCFException(h3);
2495	>	checkCompletedWithWrappedException(h0, rs[0].ex);
2496	>	checkCompletedWithWrappedException(h1, rs[1].ex);
2497	>	checkCompletedWithWrappedException(h2, rs[2].ex);
2498	>	checkCompletedWithWrappedException(h3, rs[3].ex);
2499		for (int i = 0; i < 4; i++) rs[i].assertValue(v1);
2500
2501		g.complete(v2);
#	Line 2361 | Line 2504 | public class CompletableFutureTest exten
2504		final CompletableFuture<Integer> h4 = m.applyToEither(f, g, rs[4]);
2505		final CompletableFuture<Integer> h5 = m.applyToEither(g, f, rs[5]);
2506
2507	<	checkCompletedWithWrappedCFException(h4);
2507	>	checkCompletedWithWrappedException(h4, rs[4].ex);
2508		assertTrue(Objects.equals(v1, rs[4].value) ||
2509		Objects.equals(v2, rs[4].value));
2510	<	checkCompletedWithWrappedCFException(h5);
2510	>	checkCompletedWithWrappedException(h5, rs[5].ex);
2511		assertTrue(Objects.equals(v1, rs[5].value) ||
2512		Objects.equals(v2, rs[5].value));
2513
#	Line 2502 | Line 2645 | public class CompletableFutureTest exten
2645
2646		// unspecified behavior - both source completions available
2647		try {
2648	<	assertEquals(null, h0.join());
2648	>	assertNull(h0.join());
2649		rs[0].assertValue(v1);
2650		} catch (CompletionException ok) {
2651		checkCompletedWithWrappedException(h0, ex);
2652		rs[0].assertNotInvoked();
2653		}
2654		try {
2655	<	assertEquals(null, h1.join());
2655	>	assertNull(h1.join());
2656		rs[1].assertValue(v1);
2657		} catch (CompletionException ok) {
2658		checkCompletedWithWrappedException(h1, ex);
2659		rs[1].assertNotInvoked();
2660		}
2661		try {
2662	<	assertEquals(null, h2.join());
2662	>	assertNull(h2.join());
2663		rs[2].assertValue(v1);
2664		} catch (CompletionException ok) {
2665		checkCompletedWithWrappedException(h2, ex);
2666		rs[2].assertNotInvoked();
2667		}
2668		try {
2669	<	assertEquals(null, h3.join());
2669	>	assertNull(h3.join());
2670		rs[3].assertValue(v1);
2671		} catch (CompletionException ok) {
2672		checkCompletedWithWrappedException(h3, ex);
#	Line 2608 | Line 2751 | public class CompletableFutureTest exten
2751		f.complete(v1);
2752		final CompletableFuture<Void> h2 = m.acceptEither(f, g, rs[2]);
2753		final CompletableFuture<Void> h3 = m.acceptEither(g, f, rs[3]);
2754	<	checkCompletedWithWrappedCFException(h0);
2755	<	checkCompletedWithWrappedCFException(h1);
2756	<	checkCompletedWithWrappedCFException(h2);
2757	<	checkCompletedWithWrappedCFException(h3);
2754	>	checkCompletedWithWrappedException(h0, rs[0].ex);
2755	>	checkCompletedWithWrappedException(h1, rs[1].ex);
2756	>	checkCompletedWithWrappedException(h2, rs[2].ex);
2757	>	checkCompletedWithWrappedException(h3, rs[3].ex);
2758		for (int i = 0; i < 4; i++) rs[i].assertValue(v1);
2759
2760		g.complete(v2);
#	Line 2620 | Line 2763 | public class CompletableFutureTest exten
2763		final CompletableFuture<Void> h4 = m.acceptEither(f, g, rs[4]);
2764		final CompletableFuture<Void> h5 = m.acceptEither(g, f, rs[5]);
2765
2766	<	checkCompletedWithWrappedCFException(h4);
2766	>	checkCompletedWithWrappedException(h4, rs[4].ex);
2767		assertTrue(Objects.equals(v1, rs[4].value) ||
2768		Objects.equals(v2, rs[4].value));
2769	<	checkCompletedWithWrappedCFException(h5);
2769	>	checkCompletedWithWrappedException(h5, rs[5].ex);
2770		assertTrue(Objects.equals(v1, rs[5].value) ||
2771		Objects.equals(v2, rs[5].value));
2772
#	Line 2639 | Line 2782 | public class CompletableFutureTest exten
2782		for (ExecutionMode m : ExecutionMode.values())
2783		for (Integer v1 : new Integer[] { 1, null })
2784		for (Integer v2 : new Integer[] { 2, null })
2785	+	for (boolean pushNop : new boolean[] { true, false })
2786		{
2787		final CompletableFuture<Integer> f = new CompletableFuture<>();
2788		final CompletableFuture<Integer> g = new CompletableFuture<>();
#	Line 2651 | Line 2795 | public class CompletableFutureTest exten
2795		checkIncomplete(h1);
2796		rs[0].assertNotInvoked();
2797		rs[1].assertNotInvoked();
2798	+	if (pushNop) {          // ad hoc test of intra-completion interference
2799	+	m.thenRun(f, () -> {});
2800	+	m.thenRun(g, () -> {});
2801	+	}
2802		f.complete(v1);
2803		checkCompletedNormally(h0, null);
2804		checkCompletedNormally(h1, null);
#	Line 2757 | Line 2905 | public class CompletableFutureTest exten
2905
2906		// unspecified behavior - both source completions available
2907		try {
2908	<	assertEquals(null, h0.join());
2908	>	assertNull(h0.join());
2909		rs[0].assertInvoked();
2910		} catch (CompletionException ok) {
2911		checkCompletedWithWrappedException(h0, ex);
2912		rs[0].assertNotInvoked();
2913		}
2914		try {
2915	<	assertEquals(null, h1.join());
2915	>	assertNull(h1.join());
2916		rs[1].assertInvoked();
2917		} catch (CompletionException ok) {
2918		checkCompletedWithWrappedException(h1, ex);
2919		rs[1].assertNotInvoked();
2920		}
2921		try {
2922	<	assertEquals(null, h2.join());
2922	>	assertNull(h2.join());
2923		rs[2].assertInvoked();
2924		} catch (CompletionException ok) {
2925		checkCompletedWithWrappedException(h2, ex);
2926		rs[2].assertNotInvoked();
2927		}
2928		try {
2929	<	assertEquals(null, h3.join());
2929	>	assertNull(h3.join());
2930		rs[3].assertInvoked();
2931		} catch (CompletionException ok) {
2932		checkCompletedWithWrappedException(h3, ex);
#	Line 2863 | Line 3011 | public class CompletableFutureTest exten
3011		assertTrue(f.complete(v1));
3012		final CompletableFuture<Void> h2 = m.runAfterEither(f, g, rs[2]);
3013		final CompletableFuture<Void> h3 = m.runAfterEither(g, f, rs[3]);
3014	<	checkCompletedWithWrappedCFException(h0);
3015	<	checkCompletedWithWrappedCFException(h1);
3016	<	checkCompletedWithWrappedCFException(h2);
3017	<	checkCompletedWithWrappedCFException(h3);
3014	>	checkCompletedWithWrappedException(h0, rs[0].ex);
3015	>	checkCompletedWithWrappedException(h1, rs[1].ex);
3016	>	checkCompletedWithWrappedException(h2, rs[2].ex);
3017	>	checkCompletedWithWrappedException(h3, rs[3].ex);
3018		for (int i = 0; i < 4; i++) rs[i].assertInvoked();
3019		assertTrue(g.complete(v2));
3020		final CompletableFuture<Void> h4 = m.runAfterEither(f, g, rs[4]);
3021		final CompletableFuture<Void> h5 = m.runAfterEither(g, f, rs[5]);
3022	<	checkCompletedWithWrappedCFException(h4);
3023	<	checkCompletedWithWrappedCFException(h5);
3022	>	checkCompletedWithWrappedException(h4, rs[4].ex);
3023	>	checkCompletedWithWrappedException(h5, rs[5].ex);
3024
3025		checkCompletedNormally(f, v1);
3026		checkCompletedNormally(g, v2);
#	Line 2933 | Line 3081 | public class CompletableFutureTest exten
3081		final CompletableFuture<Integer> g = m.thenCompose(f, r);
3082		if (createIncomplete) assertTrue(f.complete(v1));
3083
3084	<	checkCompletedWithWrappedCFException(g);
3084	>	checkCompletedWithWrappedException(g, r.ex);
3085		checkCompletedNormally(f, v1);
3086		}}
3087
#	Line 3010 | Line 3158 | public class CompletableFutureTest exten
3158		checkCompletedNormally(f, v1);
3159		}}
3160
3161	+	/**
3162	+	* exceptionallyCompose result completes normally after normal
3163	+	* completion of source
3164	+	*/
3165	+	public void testExceptionallyCompose_normalCompletion() {
3166	+	for (ExecutionMode m : ExecutionMode.values())
3167	+	for (boolean createIncomplete : new boolean[] { true, false })
3168	+	for (Integer v1 : new Integer[] { 1, null })
3169	+	{
3170	+	final CompletableFuture<Integer> f = new CompletableFuture<>();
3171	+	final ExceptionalCompletableFutureFunction r =
3172	+	new ExceptionalCompletableFutureFunction(m);
3173	+	if (!createIncomplete) assertTrue(f.complete(v1));
3174	+	final CompletableFuture<Integer> g = m.exceptionallyCompose(f, r);
3175	+	if (createIncomplete) assertTrue(f.complete(v1));
3176	+
3177	+	checkCompletedNormally(f, v1);
3178	+	checkCompletedNormally(g, v1);
3179	+	r.assertNotInvoked();
3180	+	}}
3181	+
3182	+	/**
3183	+	* exceptionallyCompose result completes normally after exceptional
3184	+	* completion of source
3185	+	*/
3186	+	public void testExceptionallyCompose_exceptionalCompletion() {
3187	+	for (ExecutionMode m : ExecutionMode.values())
3188	+	for (boolean createIncomplete : new boolean[] { true, false })
3189	+	{
3190	+	final CFException ex = new CFException();
3191	+	final ExceptionalCompletableFutureFunction r =
3192	+	new ExceptionalCompletableFutureFunction(m);
3193	+	final CompletableFuture<Integer> f = new CompletableFuture<>();
3194	+	if (!createIncomplete) f.completeExceptionally(ex);
3195	+	final CompletableFuture<Integer> g = m.exceptionallyCompose(f, r);
3196	+	if (createIncomplete) f.completeExceptionally(ex);
3197	+
3198	+	checkCompletedExceptionally(f, ex);
3199	+	checkCompletedNormally(g, r.value);
3200	+	r.assertInvoked();
3201	+	}}
3202	+
3203	+	/**
3204	+	* exceptionallyCompose completes exceptionally on exception if action does
3205	+	*/
3206	+	public void testExceptionallyCompose_actionFailed() {
3207	+	for (ExecutionMode m : ExecutionMode.values())
3208	+	for (boolean createIncomplete : new boolean[] { true, false })
3209	+	for (Integer v1 : new Integer[] { 1, null })
3210	+	{
3211	+	final CFException ex = new CFException();
3212	+	final CompletableFuture<Integer> f = new CompletableFuture<>();
3213	+	final FailingExceptionalCompletableFutureFunction r
3214	+	= new FailingExceptionalCompletableFutureFunction(m);
3215	+	if (!createIncomplete) f.completeExceptionally(ex);
3216	+	final CompletableFuture<Integer> g = m.exceptionallyCompose(f, r);
3217	+	if (createIncomplete) f.completeExceptionally(ex);
3218	+
3219	+	checkCompletedExceptionally(f, ex);
3220	+	checkCompletedWithWrappedException(g, r.ex);
3221	+	r.assertInvoked();
3222	+	}}
3223	+
3224	+
3225		// other static methods
3226
3227		/**
#	Line 3042 | Line 3254 | public class CompletableFutureTest exten
3254		}
3255		}
3256
3257	<	public void testAllOf_backwards() throws Exception {
3257	>	public void testAllOf_normal_backwards() throws Exception {
3258		for (int k = 1; k < 10; k++) {
3259		CompletableFuture<Integer>[] fs
3260		= (CompletableFuture<Integer>[]) new CompletableFuture[k];
#	Line 3173 | Line 3385 | public class CompletableFutureTest exten
3385		/**
3386		* Completion methods throw NullPointerException with null arguments
3387		*/
3388	+	@SuppressWarnings("FutureReturnValueIgnored")
3389		public void testNPE() {
3390		CompletableFuture<Integer> f = new CompletableFuture<>();
3391		CompletableFuture<Integer> g = new CompletableFuture<>();
#	Line 3192 | Line 3405 | public class CompletableFutureTest exten
3405
3406		() -> f.thenApply(null),
3407		() -> f.thenApplyAsync(null),
3408	<	() -> f.thenApplyAsync((x) -> x, null),
3408	>	() -> f.thenApplyAsync(x -> x, null),
3409		() -> f.thenApplyAsync(null, exec),
3410
3411		() -> f.thenAccept(null),
3412		() -> f.thenAcceptAsync(null),
3413	<	() -> f.thenAcceptAsync((x) -> {} , null),
3413	>	() -> f.thenAcceptAsync(x -> {} , null),
3414		() -> f.thenAcceptAsync(null, exec),
3415
3416		() -> f.thenRun(null),
#	Line 3232 | Line 3445 | public class CompletableFutureTest exten
3445		() -> f.applyToEither(g, null),
3446		() -> f.applyToEitherAsync(g, null),
3447		() -> f.applyToEitherAsync(g, null, exec),
3448	<	() -> f.applyToEither(nullFuture, (x) -> x),
3449	<	() -> f.applyToEitherAsync(nullFuture, (x) -> x),
3450	<	() -> f.applyToEitherAsync(nullFuture, (x) -> x, exec),
3451	<	() -> f.applyToEitherAsync(g, (x) -> x, null),
3448	>	() -> f.applyToEither(nullFuture, x -> x),
3449	>	() -> f.applyToEitherAsync(nullFuture, x -> x),
3450	>	() -> f.applyToEitherAsync(nullFuture, x -> x, exec),
3451	>	() -> f.applyToEitherAsync(g, x -> x, null),
3452
3453		() -> f.acceptEither(g, null),
3454		() -> f.acceptEitherAsync(g, null),
3455		() -> f.acceptEitherAsync(g, null, exec),
3456	<	() -> f.acceptEither(nullFuture, (x) -> {}),
3457	<	() -> f.acceptEitherAsync(nullFuture, (x) -> {}),
3458	<	() -> f.acceptEitherAsync(nullFuture, (x) -> {}, exec),
3459	<	() -> f.acceptEitherAsync(g, (x) -> {}, null),
3456	>	() -> f.acceptEither(nullFuture, x -> {}),
3457	>	() -> f.acceptEitherAsync(nullFuture, x -> {}),
3458	>	() -> f.acceptEitherAsync(nullFuture, x -> {}, exec),
3459	>	() -> f.acceptEitherAsync(g, x -> {}, null),
3460
3461		() -> f.runAfterEither(g, null),
3462		() -> f.runAfterEitherAsync(g, null),
#	Line 3275 | Line 3488 | public class CompletableFutureTest exten
3488		() -> f.obtrudeException(null),
3489
3490		() -> CompletableFuture.delayedExecutor(1L, SECONDS, null),
3491	<	() -> CompletableFuture.delayedExecutor(1L, null, new ThreadExecutor()),
3491	>	() -> CompletableFuture.delayedExecutor(1L, null, exec),
3492		() -> CompletableFuture.delayedExecutor(1L, null),
3493
3494		() -> f.orTimeout(1L, null),
#	Line 3290 | Line 3503 | public class CompletableFutureTest exten
3503		}
3504
3505		/**
3506	+	* Test submissions to an executor that rejects all tasks.
3507	+	*/
3508	+	public void testRejectingExecutor() {
3509	+	for (Integer v : new Integer[] { 1, null })
3510	+	{
3511	+	final CountingRejectingExecutor e = new CountingRejectingExecutor();
3512	+
3513	+	final CompletableFuture<Integer> complete = CompletableFuture.completedFuture(v);
3514	+	final CompletableFuture<Integer> incomplete = new CompletableFuture<>();
3515	+
3516	+	List<CompletableFuture<?>> futures = new ArrayList<>();
3517	+
3518	+	List<CompletableFuture<Integer>> srcs = new ArrayList<>();
3519	+	srcs.add(complete);
3520	+	srcs.add(incomplete);
3521	+
3522	+	for (CompletableFuture<Integer> src : srcs) {
3523	+	List<CompletableFuture<?>> fs = new ArrayList<>();
3524	+	fs.add(src.thenRunAsync(() -> {}, e));
3525	+	fs.add(src.thenAcceptAsync(z -> {}, e));
3526	+	fs.add(src.thenApplyAsync(z -> z, e));
3527	+
3528	+	fs.add(src.thenCombineAsync(src, (x, y) -> x, e));
3529	+	fs.add(src.thenAcceptBothAsync(src, (x, y) -> {}, e));
3530	+	fs.add(src.runAfterBothAsync(src, () -> {}, e));
3531	+
3532	+	fs.add(src.applyToEitherAsync(src, z -> z, e));
3533	+	fs.add(src.acceptEitherAsync(src, z -> {}, e));
3534	+	fs.add(src.runAfterEitherAsync(src, () -> {}, e));
3535	+
3536	+	fs.add(src.thenComposeAsync(z -> null, e));
3537	+	fs.add(src.whenCompleteAsync((z, t) -> {}, e));
3538	+	fs.add(src.handleAsync((z, t) -> null, e));
3539	+
3540	+	for (CompletableFuture<?> future : fs) {
3541	+	if (src.isDone())
3542	+	checkCompletedWithWrappedException(future, e.ex);
3543	+	else
3544	+	checkIncomplete(future);
3545	+	}
3546	+	futures.addAll(fs);
3547	+	}
3548	+
3549	+	{
3550	+	List<CompletableFuture<?>> fs = new ArrayList<>();
3551	+
3552	+	fs.add(complete.thenCombineAsync(incomplete, (x, y) -> x, e));
3553	+	fs.add(incomplete.thenCombineAsync(complete, (x, y) -> x, e));
3554	+
3555	+	fs.add(complete.thenAcceptBothAsync(incomplete, (x, y) -> {}, e));
3556	+	fs.add(incomplete.thenAcceptBothAsync(complete, (x, y) -> {}, e));
3557	+
3558	+	fs.add(complete.runAfterBothAsync(incomplete, () -> {}, e));
3559	+	fs.add(incomplete.runAfterBothAsync(complete, () -> {}, e));
3560	+
3561	+	for (CompletableFuture<?> future : fs)
3562	+	checkIncomplete(future);
3563	+	futures.addAll(fs);
3564	+	}
3565	+
3566	+	{
3567	+	List<CompletableFuture<?>> fs = new ArrayList<>();
3568	+
3569	+	fs.add(complete.applyToEitherAsync(incomplete, z -> z, e));
3570	+	fs.add(incomplete.applyToEitherAsync(complete, z -> z, e));
3571	+
3572	+	fs.add(complete.acceptEitherAsync(incomplete, z -> {}, e));
3573	+	fs.add(incomplete.acceptEitherAsync(complete, z -> {}, e));
3574	+
3575	+	fs.add(complete.runAfterEitherAsync(incomplete, () -> {}, e));
3576	+	fs.add(incomplete.runAfterEitherAsync(complete, () -> {}, e));
3577	+
3578	+	for (CompletableFuture<?> future : fs)
3579	+	checkCompletedWithWrappedException(future, e.ex);
3580	+	futures.addAll(fs);
3581	+	}
3582	+
3583	+	incomplete.complete(v);
3584	+
3585	+	for (CompletableFuture<?> future : futures)
3586	+	checkCompletedWithWrappedException(future, e.ex);
3587	+
3588	+	assertEquals(futures.size(), e.count.get());
3589	+	}}
3590	+
3591	+	/**
3592	+	* Test submissions to an executor that rejects all tasks, but
3593	+	* should never be invoked because the dependent future is
3594	+	* explicitly completed.
3595	+	*/
3596	+	public void testRejectingExecutorNeverInvoked() {
3597	+	for (Integer v : new Integer[] { 1, null })
3598	+	{
3599	+	final CountingRejectingExecutor e = new CountingRejectingExecutor();
3600	+
3601	+	final CompletableFuture<Integer> complete = CompletableFuture.completedFuture(v);
3602	+	final CompletableFuture<Integer> incomplete = new CompletableFuture<>();
3603	+
3604	+	List<CompletableFuture<?>> futures = new ArrayList<>();
3605	+
3606	+	List<CompletableFuture<Integer>> srcs = new ArrayList<>();
3607	+	srcs.add(complete);
3608	+	srcs.add(incomplete);
3609	+
3610	+	List<CompletableFuture<?>> fs = new ArrayList<>();
3611	+	fs.add(incomplete.thenRunAsync(() -> {}, e));
3612	+	fs.add(incomplete.thenAcceptAsync(z -> {}, e));
3613	+	fs.add(incomplete.thenApplyAsync(z -> z, e));
3614	+
3615	+	fs.add(incomplete.thenCombineAsync(incomplete, (x, y) -> x, e));
3616	+	fs.add(incomplete.thenAcceptBothAsync(incomplete, (x, y) -> {}, e));
3617	+	fs.add(incomplete.runAfterBothAsync(incomplete, () -> {}, e));
3618	+
3619	+	fs.add(incomplete.applyToEitherAsync(incomplete, z -> z, e));
3620	+	fs.add(incomplete.acceptEitherAsync(incomplete, z -> {}, e));
3621	+	fs.add(incomplete.runAfterEitherAsync(incomplete, () -> {}, e));
3622	+
3623	+	fs.add(incomplete.thenComposeAsync(z -> null, e));
3624	+	fs.add(incomplete.whenCompleteAsync((z, t) -> {}, e));
3625	+	fs.add(incomplete.handleAsync((z, t) -> null, e));
3626	+
3627	+	fs.add(complete.thenCombineAsync(incomplete, (x, y) -> x, e));
3628	+	fs.add(incomplete.thenCombineAsync(complete, (x, y) -> x, e));
3629	+
3630	+	fs.add(complete.thenAcceptBothAsync(incomplete, (x, y) -> {}, e));
3631	+	fs.add(incomplete.thenAcceptBothAsync(complete, (x, y) -> {}, e));
3632	+
3633	+	fs.add(complete.runAfterBothAsync(incomplete, () -> {}, e));
3634	+	fs.add(incomplete.runAfterBothAsync(complete, () -> {}, e));
3635	+
3636	+	for (CompletableFuture<?> future : fs)
3637	+	checkIncomplete(future);
3638	+
3639	+	for (CompletableFuture<?> future : fs)
3640	+	future.complete(null);
3641	+
3642	+	incomplete.complete(v);
3643	+
3644	+	for (CompletableFuture<?> future : fs)
3645	+	checkCompletedNormally(future, null);
3646	+
3647	+	assertEquals(0, e.count.get());
3648	+	}}
3649	+
3650	+	/**
3651		* toCompletableFuture returns this CompletableFuture.
3652		*/
3653		public void testToCompletableFuture() {
#	Line 3322 | Line 3680 | public class CompletableFutureTest exten
3680		*/
3681		public void testCompletedStage() {
3682		AtomicInteger x = new AtomicInteger(0);
3683	<	AtomicReference<Throwable> r = new AtomicReference<Throwable>();
3683	>	AtomicReference<Throwable> r = new AtomicReference<>();
3684		CompletionStage<Integer> f = CompletableFuture.completedStage(1);
3685		f.whenComplete((v, e) -> {if (e != null) r.set(e); else x.set(v);});
3686		assertEquals(x.get(), 1);
#	Line 3367 | Line 3725 | public class CompletableFutureTest exten
3725		* copy returns a CompletableFuture that is completed normally,
3726		* with the same value, when source is.
3727		*/
3728	<	public void testCopy() {
3728	>	public void testCopy_normalCompletion() {
3729	>	for (boolean createIncomplete : new boolean[] { true, false })
3730	>	for (Integer v1 : new Integer[] { 1, null })
3731	>	{
3732		CompletableFuture<Integer> f = new CompletableFuture<>();
3733	+	if (!createIncomplete) assertTrue(f.complete(v1));
3734		CompletableFuture<Integer> g = f.copy();
3735	<	checkIncomplete(f);
3736	<	checkIncomplete(g);
3737	<	f.complete(1);
3738	<	checkCompletedNormally(f, 1);
3739	<	checkCompletedNormally(g, 1);
3740	<	}
3735	>	if (createIncomplete) {
3736	>	checkIncomplete(f);
3737	>	checkIncomplete(g);
3738	>	assertTrue(f.complete(v1));
3739	>	}
3740	>	checkCompletedNormally(f, v1);
3741	>	checkCompletedNormally(g, v1);
3742	>	}}
3743
3744		/**
3745		* copy returns a CompletableFuture that is completed exceptionally
3746		* when source is.
3747		*/
3748	<	public void testCopy2() {
3748	>	public void testCopy_exceptionalCompletion() {
3749	>	for (boolean createIncomplete : new boolean[] { true, false })
3750	>	{
3751	>	CFException ex = new CFException();
3752		CompletableFuture<Integer> f = new CompletableFuture<>();
3753	+	if (!createIncomplete) f.completeExceptionally(ex);
3754		CompletableFuture<Integer> g = f.copy();
3755	<	checkIncomplete(f);
3756	<	checkIncomplete(g);
3757	<	CFException ex = new CFException();
3758	<	f.completeExceptionally(ex);
3755	>	if (createIncomplete) {
3756	>	checkIncomplete(f);
3757	>	checkIncomplete(g);
3758	>	f.completeExceptionally(ex);
3759	>	}
3760		checkCompletedExceptionally(f, ex);
3761		checkCompletedWithWrappedException(g, ex);
3762	+	}}
3763	+
3764	+	/**
3765	+	* Completion of a copy does not complete its source.
3766	+	*/
3767	+	public void testCopy_oneWayPropagation() {
3768	+	CompletableFuture<Integer> f = new CompletableFuture<>();
3769	+	assertTrue(f.copy().complete(1));
3770	+	assertTrue(f.copy().complete(null));
3771	+	assertTrue(f.copy().cancel(true));
3772	+	assertTrue(f.copy().cancel(false));
3773	+	assertTrue(f.copy().completeExceptionally(new CFException()));
3774	+	checkIncomplete(f);
3775		}
3776
3777		/**
#	Line 3400 | Line 3782 | public class CompletableFutureTest exten
3782		CompletableFuture<Integer> f = new CompletableFuture<>();
3783		CompletionStage<Integer> g = f.minimalCompletionStage();
3784		AtomicInteger x = new AtomicInteger(0);
3785	<	AtomicReference<Throwable> r = new AtomicReference<Throwable>();
3785	>	AtomicReference<Throwable> r = new AtomicReference<>();
3786		checkIncomplete(f);
3787		g.whenComplete((v, e) -> {if (e != null) r.set(e); else x.set(v);});
3788		f.complete(1);
#	Line 3417 | Line 3799 | public class CompletableFutureTest exten
3799		CompletableFuture<Integer> f = new CompletableFuture<>();
3800		CompletionStage<Integer> g = f.minimalCompletionStage();
3801		AtomicInteger x = new AtomicInteger(0);
3802	<	AtomicReference<Throwable> r = new AtomicReference<Throwable>();
3802	>	AtomicReference<Throwable> r = new AtomicReference<>();
3803		g.whenComplete((v, e) -> {if (e != null) r.set(e); else x.set(v);});
3804		checkIncomplete(f);
3805		CFException ex = new CFException();
#	Line 3435 | Line 3817 | public class CompletableFutureTest exten
3817		CFException ex = new CFException();
3818		CompletionStage<Integer> f = CompletableFuture.failedStage(ex);
3819		AtomicInteger x = new AtomicInteger(0);
3820	<	AtomicReference<Throwable> r = new AtomicReference<Throwable>();
3820	>	AtomicReference<Throwable> r = new AtomicReference<>();
3821		f.whenComplete((v, e) -> {if (e != null) r.set(e); else x.set(v);});
3822		assertEquals(x.get(), 0);
3823		assertEquals(r.get(), ex);
#	Line 3459 | Line 3841 | public class CompletableFutureTest exten
3841		public void testCompleteAsync2() {
3842		CompletableFuture<Integer> f = new CompletableFuture<>();
3843		CFException ex = new CFException();
3844	<	f.completeAsync(() -> {if (true) throw ex; return 1;});
3844	>	f.completeAsync(() -> { throw ex; });
3845		try {
3846		f.join();
3847		shouldThrow();
#	Line 3489 | Line 3871 | public class CompletableFutureTest exten
3871		CompletableFuture<Integer> f = new CompletableFuture<>();
3872		CFException ex = new CFException();
3873		ThreadExecutor executor = new ThreadExecutor();
3874	<	f.completeAsync(() -> {if (true) throw ex; return 1;}, executor);
3874	>	f.completeAsync(() -> { throw ex; }, executor);
3875		try {
3876		f.join();
3877		shouldThrow();
#	Line 3505 | Line 3887 | public class CompletableFutureTest exten
3887		long timeoutMillis = timeoutMillis();
3888		CompletableFuture<Integer> f = new CompletableFuture<>();
3889		long startTime = System.nanoTime();
3890	<	f.orTimeout(timeoutMillis, MILLISECONDS);
3890	>	assertSame(f, f.orTimeout(timeoutMillis, MILLISECONDS));
3891		checkCompletedWithTimeoutException(f);
3892		assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
3893		}
#	Line 3520 | Line 3902 | public class CompletableFutureTest exten
3902		CompletableFuture<Integer> g = new CompletableFuture<>();
3903		long startTime = System.nanoTime();
3904		f.complete(v1);
3905	<	f.orTimeout(LONG_DELAY_MS, MILLISECONDS);
3906	<	g.orTimeout(LONG_DELAY_MS, MILLISECONDS);
3905	>	assertSame(f, f.orTimeout(LONG_DELAY_MS, MILLISECONDS));
3906	>	assertSame(g, g.orTimeout(LONG_DELAY_MS, MILLISECONDS));
3907		g.complete(v1);
3908		checkCompletedNormally(f, v1);
3909		checkCompletedNormally(g, v1);
#	Line 3536 | Line 3918 | public class CompletableFutureTest exten
3918		() -> testCompleteOnTimeout_timesOut(null));
3919		}
3920
3921	+	/**
3922	+	* completeOnTimeout completes with given value if not complete
3923	+	*/
3924		public void testCompleteOnTimeout_timesOut(Integer v) {
3925		long timeoutMillis = timeoutMillis();
3926		CompletableFuture<Integer> f = new CompletableFuture<>();
3927		long startTime = System.nanoTime();
3928	<	f.completeOnTimeout(v, timeoutMillis, MILLISECONDS);
3928	>	assertSame(f, f.completeOnTimeout(v, timeoutMillis, MILLISECONDS));
3929		assertSame(v, f.join());
3930		assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
3931		f.complete(99);         // should have no effect
#	Line 3557 | Line 3942 | public class CompletableFutureTest exten
3942		CompletableFuture<Integer> g = new CompletableFuture<>();
3943		long startTime = System.nanoTime();
3944		f.complete(v1);
3945	<	f.completeOnTimeout(-1, LONG_DELAY_MS, MILLISECONDS);
3946	<	g.completeOnTimeout(-1, LONG_DELAY_MS, MILLISECONDS);
3945	>	assertSame(f, f.completeOnTimeout(-1, LONG_DELAY_MS, MILLISECONDS));
3946	>	assertSame(g, g.completeOnTimeout(-1, LONG_DELAY_MS, MILLISECONDS));
3947		g.complete(v1);
3948		checkCompletedNormally(f, v1);
3949		checkCompletedNormally(g, v1);
#	Line 3609 | Line 3994 | public class CompletableFutureTest exten
3994		//--- tests of implementation details; not part of official tck ---
3995
3996		Object resultOf(CompletableFuture<?> f) {
3997	+	SecurityManager sm = System.getSecurityManager();
3998	+	if (sm != null) {
3999	+	try {
4000	+	System.setSecurityManager(null);
4001	+	} catch (SecurityException giveUp) {
4002	+	return "Reflection not available";
4003	+	}
4004	+	}
4005	+
4006		try {
4007		java.lang.reflect.Field resultField
4008		= CompletableFuture.class.getDeclaredField("result");
4009		resultField.setAccessible(true);
4010		return resultField.get(f);
4011	<	} catch (Throwable t) { throw new AssertionError(t); }
4011	>	} catch (Throwable t) {
4012	>	throw new AssertionError(t);
4013	>	} finally {
4014	>	if (sm != null) System.setSecurityManager(sm);
4015	>	}
4016		}
4017
4018		public void testExceptionPropagationReusesResultObject() {
#	Line 3625 | Line 4023 | public class CompletableFutureTest exten
4023		final CompletableFuture<Integer> v42 = CompletableFuture.completedFuture(42);
4024		final CompletableFuture<Integer> incomplete = new CompletableFuture<>();
4025
4026	+	final Runnable noopRunnable = new Noop(m);
4027	+	final Consumer<Integer> noopConsumer = new NoopConsumer(m);
4028	+	final Function<Integer, Integer> incFunction = new IncFunction(m);
4029	+
4030		List<Function<CompletableFuture<Integer>, CompletableFuture<?>>> funs
4031		= new ArrayList<>();
4032
4033	<	funs.add((y) -> m.thenRun(y, new Noop(m)));
4034	<	funs.add((y) -> m.thenAccept(y, new NoopConsumer(m)));
4035	<	funs.add((y) -> m.thenApply(y, new IncFunction(m)));
4036	<
4037	<	funs.add((y) -> m.runAfterEither(y, incomplete, new Noop(m)));
4038	<	funs.add((y) -> m.acceptEither(y, incomplete, new NoopConsumer(m)));
4039	<	funs.add((y) -> m.applyToEither(y, incomplete, new IncFunction(m)));
4040	<
4041	<	funs.add((y) -> m.runAfterBoth(y, v42, new Noop(m)));
4042	<	funs.add((y) -> m.thenAcceptBoth(y, v42, new SubtractAction(m)));
4043	<	funs.add((y) -> m.thenCombine(y, v42, new SubtractFunction(m)));
4044	<
4045	<	funs.add((y) -> m.whenComplete(y, (Integer x, Throwable t) -> {}));
4046	<
4047	<	funs.add((y) -> m.thenCompose(y, new CompletableFutureInc(m)));
4048	<
4049	<	funs.add((y) -> CompletableFuture.allOf(new CompletableFuture<?>[] {y, v42}));
4050	<	funs.add((y) -> CompletableFuture.anyOf(new CompletableFuture<?>[] {y, incomplete}));
4033	>	funs.add(y -> m.thenRun(y, noopRunnable));
4034	>	funs.add(y -> m.thenAccept(y, noopConsumer));
4035	>	funs.add(y -> m.thenApply(y, incFunction));
4036	>
4037	>	funs.add(y -> m.runAfterEither(y, incomplete, noopRunnable));
4038	>	funs.add(y -> m.acceptEither(y, incomplete, noopConsumer));
4039	>	funs.add(y -> m.applyToEither(y, incomplete, incFunction));
4040	>
4041	>	funs.add(y -> m.runAfterBoth(y, v42, noopRunnable));
4042	>	funs.add(y -> m.runAfterBoth(v42, y, noopRunnable));
4043	>	funs.add(y -> m.thenAcceptBoth(y, v42, new SubtractAction(m)));
4044	>	funs.add(y -> m.thenAcceptBoth(v42, y, new SubtractAction(m)));
4045	>	funs.add(y -> m.thenCombine(y, v42, new SubtractFunction(m)));
4046	>	funs.add(y -> m.thenCombine(v42, y, new SubtractFunction(m)));
4047	>
4048	>	funs.add(y -> m.whenComplete(y, (Integer r, Throwable t) -> {}));
4049	>
4050	>	funs.add(y -> m.thenCompose(y, new CompletableFutureInc(m)));
4051	>
4052	>	funs.add(y -> CompletableFuture.allOf(y));
4053	>	funs.add(y -> CompletableFuture.allOf(y, v42));
4054	>	funs.add(y -> CompletableFuture.allOf(v42, y));
4055	>	funs.add(y -> CompletableFuture.anyOf(y));
4056	>	funs.add(y -> CompletableFuture.anyOf(y, incomplete));
4057	>	funs.add(y -> CompletableFuture.anyOf(incomplete, y));
4058
4059		for (Function<CompletableFuture<Integer>, CompletableFuture<?>>
4060		fun : funs) {
4061		CompletableFuture<Integer> f = new CompletableFuture<>();
4062		f.completeExceptionally(ex);
4063	<	CompletableFuture<Integer> src = m.thenApply(f, new IncFunction(m));
4063	>	CompletableFuture<Integer> src = m.thenApply(f, incFunction);
4064		checkCompletedWithWrappedException(src, ex);
4065		CompletableFuture<?> dep = fun.apply(src);
4066		checkCompletedWithWrappedException(dep, ex);
#	Line 3661 | Line 4070 | public class CompletableFutureTest exten
4070		for (Function<CompletableFuture<Integer>, CompletableFuture<?>>
4071		fun : funs) {
4072		CompletableFuture<Integer> f = new CompletableFuture<>();
4073	<	CompletableFuture<Integer> src = m.thenApply(f, new IncFunction(m));
4073	>	CompletableFuture<Integer> src = m.thenApply(f, incFunction);
4074		CompletableFuture<?> dep = fun.apply(src);
4075		f.completeExceptionally(ex);
4076		checkCompletedWithWrappedException(src, ex);
#	Line 3675 | Line 4084 | public class CompletableFutureTest exten
4084		CompletableFuture<Integer> f = new CompletableFuture<>();
4085		f.cancel(mayInterruptIfRunning);
4086		checkCancelled(f);
4087	<	CompletableFuture<Integer> src = m.thenApply(f, new IncFunction(m));
4087	>	CompletableFuture<Integer> src = m.thenApply(f, incFunction);
4088		checkCompletedWithWrappedCancellationException(src);
4089		CompletableFuture<?> dep = fun.apply(src);
4090		checkCompletedWithWrappedCancellationException(dep);
#	Line 3686 | Line 4095 | public class CompletableFutureTest exten
4095		for (Function<CompletableFuture<Integer>, CompletableFuture<?>>
4096		fun : funs) {
4097		CompletableFuture<Integer> f = new CompletableFuture<>();
4098	<	CompletableFuture<Integer> src = m.thenApply(f, new IncFunction(m));
4098	>	CompletableFuture<Integer> src = m.thenApply(f, incFunction);
4099		CompletableFuture<?> dep = fun.apply(src);
4100		f.cancel(mayInterruptIfRunning);
4101		checkCancelled(f);
#	Line 3697 | Line 4106 | public class CompletableFutureTest exten
4106		}}
4107
4108		/**
4109	<	* Minimal completion stages throw UOE for all non-CompletionStage methods
4109	>	* Minimal completion stages throw UOE for most non-CompletionStage methods
4110		*/
4111		public void testMinimalCompletionStage_minimality() {
4112		if (!testImplementationDetails) return;
4113		Function<Method, String> toSignature =
4114	<	(method) -> method.getName() + Arrays.toString(method.getParameterTypes());
4114	>	method -> method.getName() + Arrays.toString(method.getParameterTypes());
4115	>	Predicate<Method> isNotStatic =
4116	>	method -> (method.getModifiers() & Modifier.STATIC) == 0;
4117		List<Method> minimalMethods =
4118		Stream.of(Object.class, CompletionStage.class)
4119	<	.map((klazz) -> Stream.of(klazz.getMethods()))
4120	<	.reduce(Stream::concat)
3710	<	.orElseGet(Stream::empty)
3711	<	.filter((method) -> (method.getModifiers() & Modifier.STATIC) == 0)
4119	>	.flatMap(klazz -> Stream.of(klazz.getMethods()))
4120	>	.filter(isNotStatic)
4121		.collect(Collectors.toList());
4122		// Methods from CompletableFuture permitted NOT to throw UOE
4123		String[] signatureWhitelist = {
#	Line 3722 | Line 4131 | public class CompletableFutureTest exten
4131		Stream.of(signatureWhitelist))
4132		.collect(Collectors.toSet());
4133		List<Method> allMethods = Stream.of(CompletableFuture.class.getMethods())
4134	<	.filter((method) -> (method.getModifiers() & Modifier.STATIC) == 0)
4135	<	.filter((method) -> !permittedMethodSignatures.contains(toSignature.apply(method)))
4134	>	.filter(isNotStatic)
4135	>	.filter(method -> !permittedMethodSignatures.contains(toSignature.apply(method)))
4136		.collect(Collectors.toList());
4137
4138	<	CompletionStage<Integer> minimalStage =
4138	>	List<CompletionStage<Integer>> stages = new ArrayList<>();
4139	>	CompletionStage<Integer> min =
4140		new CompletableFuture<Integer>().minimalCompletionStage();
4141	+	stages.add(min);
4142	+	stages.add(min.thenApply(x -> x));
4143	+	stages.add(CompletableFuture.completedStage(1));
4144	+	stages.add(CompletableFuture.failedStage(new CFException()));
4145
4146		List<Method> bugs = new ArrayList<>();
4147		for (Method method : allMethods) {
#	Line 3743 | Line 4157 | public class CompletableFutureTest exten
4157		else if (parameterTypes[i] == long.class)
4158		args[i] = 0L;
4159		}
4160	<	try {
4161	<	method.invoke(minimalStage, args);
4162	<	bugs.add(method);
3749	<	}
3750	<	catch (java.lang.reflect.InvocationTargetException expected) {
3751	<	if (! (expected.getCause() instanceof UnsupportedOperationException)) {
4160	>	for (CompletionStage<Integer> stage : stages) {
4161	>	try {
4162	>	method.invoke(stage, args);
4163		bugs.add(method);
3753	–	// expected.getCause().printStackTrace();
4164		}
4165	+	catch (java.lang.reflect.InvocationTargetException expected) {
4166	+	if (! (expected.getCause() instanceof UnsupportedOperationException)) {
4167	+	bugs.add(method);
4168	+	// expected.getCause().printStackTrace();
4169	+	}
4170	+	}
4171	+	catch (ReflectiveOperationException bad) { throw new Error(bad); }
4172		}
3756	–	catch (ReflectiveOperationException bad) { throw new Error(bad); }
4173		}
4174		if (!bugs.isEmpty())
4175	<	throw new Error("Methods did not throw UOE: " + bugs.toString());
4175	>	throw new Error("Methods did not throw UOE: " + bugs);
4176	>	}
4177	>
4178	>	/**
4179	>	* minimalStage.toCompletableFuture() returns a CompletableFuture that
4180	>	* is completed normally, with the same value, when source is.
4181	>	*/
4182	>	public void testMinimalCompletionStage_toCompletableFuture_normalCompletion() {
4183	>	for (boolean createIncomplete : new boolean[] { true, false })
4184	>	for (Integer v1 : new Integer[] { 1, null })
4185	>	{
4186	>	CompletableFuture<Integer> f = new CompletableFuture<>();
4187	>	CompletionStage<Integer> minimal = f.minimalCompletionStage();
4188	>	if (!createIncomplete) assertTrue(f.complete(v1));
4189	>	CompletableFuture<Integer> g = minimal.toCompletableFuture();
4190	>	if (createIncomplete) {
4191	>	checkIncomplete(f);
4192	>	checkIncomplete(g);
4193	>	assertTrue(f.complete(v1));
4194	>	}
4195	>	checkCompletedNormally(f, v1);
4196	>	checkCompletedNormally(g, v1);
4197	>	}}
4198	>
4199	>	/**
4200	>	* minimalStage.toCompletableFuture() returns a CompletableFuture that
4201	>	* is completed exceptionally when source is.
4202	>	*/
4203	>	public void testMinimalCompletionStage_toCompletableFuture_exceptionalCompletion() {
4204	>	for (boolean createIncomplete : new boolean[] { true, false })
4205	>	{
4206	>	CFException ex = new CFException();
4207	>	CompletableFuture<Integer> f = new CompletableFuture<>();
4208	>	CompletionStage<Integer> minimal = f.minimalCompletionStage();
4209	>	if (!createIncomplete) f.completeExceptionally(ex);
4210	>	CompletableFuture<Integer> g = minimal.toCompletableFuture();
4211	>	if (createIncomplete) {
4212	>	checkIncomplete(f);
4213	>	checkIncomplete(g);
4214	>	f.completeExceptionally(ex);
4215	>	}
4216	>	checkCompletedExceptionally(f, ex);
4217	>	checkCompletedWithWrappedException(g, ex);
4218	>	}}
4219	>
4220	>	/**
4221	>	* minimalStage.toCompletableFuture() gives mutable CompletableFuture
4222	>	*/
4223	>	public void testMinimalCompletionStage_toCompletableFuture_mutable() {
4224	>	for (Integer v1 : new Integer[] { 1, null })
4225	>	{
4226	>	CompletableFuture<Integer> f = new CompletableFuture<>();
4227	>	CompletionStage minimal = f.minimalCompletionStage();
4228	>	CompletableFuture<Integer> g = minimal.toCompletableFuture();
4229	>	assertTrue(g.complete(v1));
4230	>	checkCompletedNormally(g, v1);
4231	>	checkIncomplete(f);
4232	>	checkIncomplete(minimal.toCompletableFuture());
4233	>	}}
4234	>
4235	>	/**
4236	>	* minimalStage.toCompletableFuture().join() awaits completion
4237	>	*/
4238	>	public void testMinimalCompletionStage_toCompletableFuture_join() throws Exception {
4239	>	for (boolean createIncomplete : new boolean[] { true, false })
4240	>	for (Integer v1 : new Integer[] { 1, null })
4241	>	{
4242	>	CompletableFuture<Integer> f = new CompletableFuture<>();
4243	>	if (!createIncomplete) assertTrue(f.complete(v1));
4244	>	CompletionStage<Integer> minimal = f.minimalCompletionStage();
4245	>	if (createIncomplete) assertTrue(f.complete(v1));
4246	>	assertEquals(v1, minimal.toCompletableFuture().join());
4247	>	assertEquals(v1, minimal.toCompletableFuture().get());
4248	>	checkCompletedNormally(minimal.toCompletableFuture(), v1);
4249	>	}}
4250	>
4251	>	/**
4252	>	* Completion of a toCompletableFuture copy of a minimal stage
4253	>	* does not complete its source.
4254	>	*/
4255	>	public void testMinimalCompletionStage_toCompletableFuture_oneWayPropagation() {
4256	>	CompletableFuture<Integer> f = new CompletableFuture<>();
4257	>	CompletionStage<Integer> g = f.minimalCompletionStage();
4258	>	assertTrue(g.toCompletableFuture().complete(1));
4259	>	assertTrue(g.toCompletableFuture().complete(null));
4260	>	assertTrue(g.toCompletableFuture().cancel(true));
4261	>	assertTrue(g.toCompletableFuture().cancel(false));
4262	>	assertTrue(g.toCompletableFuture().completeExceptionally(new CFException()));
4263	>	checkIncomplete(g.toCompletableFuture());
4264	>	f.complete(1);
4265	>	checkCompletedNormally(g.toCompletableFuture(), 1);
4266	>	}
4267	>
4268	>	/** Demo utility method for external reliable toCompletableFuture */
4269	>	static <T> CompletableFuture<T> toCompletableFuture(CompletionStage<T> stage) {
4270	>	CompletableFuture<T> f = new CompletableFuture<>();
4271	>	stage.handle((T t, Throwable ex) -> {
4272	>	if (ex != null) f.completeExceptionally(ex);
4273	>	else f.complete(t);
4274	>	return null;
4275	>	});
4276	>	return f;
4277	>	}
4278	>
4279	>	/** Demo utility method to join a CompletionStage */
4280	>	static <T> T join(CompletionStage<T> stage) {
4281	>	return toCompletableFuture(stage).join();
4282	>	}
4283	>
4284	>	/**
4285	>	* Joining a minimal stage "by hand" works
4286	>	*/
4287	>	public void testMinimalCompletionStage_join_by_hand() {
4288	>	for (boolean createIncomplete : new boolean[] { true, false })
4289	>	for (Integer v1 : new Integer[] { 1, null })
4290	>	{
4291	>	CompletableFuture<Integer> f = new CompletableFuture<>();
4292	>	CompletionStage<Integer> minimal = f.minimalCompletionStage();
4293	>	CompletableFuture<Integer> g = new CompletableFuture<>();
4294	>	if (!createIncomplete) assertTrue(f.complete(v1));
4295	>	minimal.thenAccept(x -> g.complete(x));
4296	>	if (createIncomplete) assertTrue(f.complete(v1));
4297	>	g.join();
4298	>	checkCompletedNormally(g, v1);
4299	>	checkCompletedNormally(f, v1);
4300	>	assertEquals(v1, join(minimal));
4301	>	}}
4302	>
4303	>	static class Monad {
4304	>	static class ZeroException extends RuntimeException {
4305	>	public ZeroException() { super("monadic zero"); }
4306	>	}
4307	>	// "return", "unit"
4308	>	static <T> CompletableFuture<T> unit(T value) {
4309	>	return completedFuture(value);
4310	>	}
4311	>	// monadic zero ?
4312	>	static <T> CompletableFuture<T> zero() {
4313	>	return failedFuture(new ZeroException());
4314	>	}
4315	>	// >=>
4316	>	static <T,U,V> Function<T, CompletableFuture<V>> compose
4317	>	(Function<T, CompletableFuture<U>> f,
4318	>	Function<U, CompletableFuture<V>> g) {
4319	>	return x -> f.apply(x).thenCompose(g);
4320	>	}
4321	>
4322	>	static void assertZero(CompletableFuture<?> f) {
4323	>	try {
4324	>	f.getNow(null);
4325	>	throw new AssertionError("should throw");
4326	>	} catch (CompletionException success) {
4327	>	assertTrue(success.getCause() instanceof ZeroException);
4328	>	}
4329	>	}
4330	>
4331	>	static <T> void assertFutureEquals(CompletableFuture<T> f,
4332	>	CompletableFuture<T> g) {
4333	>	T fval = null, gval = null;
4334	>	Throwable fex = null, gex = null;
4335	>
4336	>	try { fval = f.get(); }
4337	>	catch (ExecutionException ex) { fex = ex.getCause(); }
4338	>	catch (Throwable ex) { fex = ex; }
4339	>
4340	>	try { gval = g.get(); }
4341	>	catch (ExecutionException ex) { gex = ex.getCause(); }
4342	>	catch (Throwable ex) { gex = ex; }
4343	>
4344	>	if (fex != null || gex != null)
4345	>	assertSame(fex.getClass(), gex.getClass());
4346	>	else
4347	>	assertEquals(fval, gval);
4348	>	}
4349	>
4350	>	static class PlusFuture<T> extends CompletableFuture<T> {
4351	>	AtomicReference<Throwable> firstFailure = new AtomicReference<>(null);
4352	>	}
4353	>
4354	>	/** Implements "monadic plus". */
4355	>	static <T> CompletableFuture<T> plus(CompletableFuture<? extends T> f,
4356	>	CompletableFuture<? extends T> g) {
4357	>	PlusFuture<T> plus = new PlusFuture<T>();
4358	>	BiConsumer<T, Throwable> action = (T result, Throwable ex) -> {
4359	>	try {
4360	>	if (ex == null) {
4361	>	if (plus.complete(result))
4362	>	if (plus.firstFailure.get() != null)
4363	>	plus.firstFailure.set(null);
4364	>	}
4365	>	else if (plus.firstFailure.compareAndSet(null, ex)) {
4366	>	if (plus.isDone())
4367	>	plus.firstFailure.set(null);
4368	>	}
4369	>	else {
4370	>	// first failure has precedence
4371	>	Throwable first = plus.firstFailure.getAndSet(null);
4372	>
4373	>	// may fail with "Self-suppression not permitted"
4374	>	try { first.addSuppressed(ex); }
4375	>	catch (Exception ignored) {}
4376	>
4377	>	plus.completeExceptionally(first);
4378	>	}
4379	>	} catch (Throwable unexpected) {
4380	>	plus.completeExceptionally(unexpected);
4381	>	}
4382	>	};
4383	>	f.whenComplete(action);
4384	>	g.whenComplete(action);
4385	>	return plus;
4386	>	}
4387	>	}
4388	>
4389	>	/**
4390	>	* CompletableFuture is an additive monad - sort of.
4391	>	* https://en.wikipedia.org/wiki/Monad_(functional_programming)#Additive_monads
4392	>	*/
4393	>	public void testAdditiveMonad() throws Throwable {
4394	>	Function<Long, CompletableFuture<Long>> unit = Monad::unit;
4395	>	CompletableFuture<Long> zero = Monad.zero();
4396	>
4397	>	// Some mutually non-commutative functions
4398	>	Function<Long, CompletableFuture<Long>> triple
4399	>	= x -> Monad.unit(3 * x);
4400	>	Function<Long, CompletableFuture<Long>> inc
4401	>	= x -> Monad.unit(x + 1);
4402	>
4403	>	// unit is a right identity: m >>= unit === m
4404	>	Monad.assertFutureEquals(inc.apply(5L).thenCompose(unit),
4405	>	inc.apply(5L));
4406	>	// unit is a left identity: (unit x) >>= f === f x
4407	>	Monad.assertFutureEquals(unit.apply(5L).thenCompose(inc),
4408	>	inc.apply(5L));
4409	>
4410	>	// associativity: (m >>= f) >>= g === m >>= ( \x -> (f x >>= g) )
4411	>	Monad.assertFutureEquals(
4412	>	unit.apply(5L).thenCompose(inc).thenCompose(triple),
4413	>	unit.apply(5L).thenCompose(x -> inc.apply(x).thenCompose(triple)));
4414	>
4415	>	// The case for CompletableFuture as an additive monad is weaker...
4416	>
4417	>	// zero is a monadic zero
4418	>	Monad.assertZero(zero);
4419	>
4420	>	// left zero: zero >>= f === zero
4421	>	Monad.assertZero(zero.thenCompose(inc));
4422	>	// right zero: f >>= (\x -> zero) === zero
4423	>	Monad.assertZero(inc.apply(5L).thenCompose(x -> zero));
4424	>
4425	>	// f plus zero === f
4426	>	Monad.assertFutureEquals(Monad.unit(5L),
4427	>	Monad.plus(Monad.unit(5L), zero));
4428	>	// zero plus f === f
4429	>	Monad.assertFutureEquals(Monad.unit(5L),
4430	>	Monad.plus(zero, Monad.unit(5L)));
4431	>	// zero plus zero === zero
4432	>	Monad.assertZero(Monad.plus(zero, zero));
4433	>	{
4434	>	CompletableFuture<Long> f = Monad.plus(Monad.unit(5L),
4435	>	Monad.unit(8L));
4436	>	// non-determinism
4437	>	assertTrue(f.get() == 5L || f.get() == 8L);
4438	>	}
4439	>
4440	>	CompletableFuture<Long> godot = new CompletableFuture<>();
4441	>	// f plus godot === f (doesn't wait for godot)
4442	>	Monad.assertFutureEquals(Monad.unit(5L),
4443	>	Monad.plus(Monad.unit(5L), godot));
4444	>	// godot plus f === f (doesn't wait for godot)
4445	>	Monad.assertFutureEquals(Monad.unit(5L),
4446	>	Monad.plus(godot, Monad.unit(5L)));
4447	>	}
4448	>
4449	>	/** Test long recursive chains of CompletableFutures with cascading completions */
4450	>	@SuppressWarnings("FutureReturnValueIgnored")
4451	>	public void testRecursiveChains() throws Throwable {
4452	>	for (ExecutionMode m : ExecutionMode.values())
4453	>	for (boolean addDeadEnds : new boolean[] { true, false })
4454	>	{
4455	>	final int val = 42;
4456	>	final int n = expensiveTests ? 1_000 : 2;
4457	>	CompletableFuture<Integer> head = new CompletableFuture<>();
4458	>	CompletableFuture<Integer> tail = head;
4459	>	for (int i = 0; i < n; i++) {
4460	>	if (addDeadEnds) m.thenApply(tail, v -> v + 1);
4461	>	tail = m.thenApply(tail, v -> v + 1);
4462	>	if (addDeadEnds) m.applyToEither(tail, tail, v -> v + 1);
4463	>	tail = m.applyToEither(tail, tail, v -> v + 1);
4464	>	if (addDeadEnds) m.thenCombine(tail, tail, (v, w) -> v + 1);
4465	>	tail = m.thenCombine(tail, tail, (v, w) -> v + 1);
4466	>	}
4467	>	head.complete(val);
4468	>	assertEquals(val + 3 * n, (int) tail.join());
4469	>	}}
4470	>
4471	>	/**
4472	>	* A single CompletableFuture with many dependents.
4473	>	* A demo of scalability - runtime is O(n).
4474	>	*/
4475	>	@SuppressWarnings("FutureReturnValueIgnored")
4476	>	public void testManyDependents() throws Throwable {
4477	>	final int n = expensiveTests ? 1_000_000 : 10;
4478	>	final CompletableFuture<Void> head = new CompletableFuture<>();
4479	>	final CompletableFuture<Void> complete = CompletableFuture.completedFuture((Void)null);
4480	>	final AtomicInteger count = new AtomicInteger(0);
4481	>	for (int i = 0; i < n; i++) {
4482	>	head.thenRun(() -> count.getAndIncrement());
4483	>	head.thenAccept(x -> count.getAndIncrement());
4484	>	head.thenApply(x -> count.getAndIncrement());
4485	>
4486	>	head.runAfterBoth(complete, () -> count.getAndIncrement());
4487	>	head.thenAcceptBoth(complete, (x, y) -> count.getAndIncrement());
4488	>	head.thenCombine(complete, (x, y) -> count.getAndIncrement());
4489	>	complete.runAfterBoth(head, () -> count.getAndIncrement());
4490	>	complete.thenAcceptBoth(head, (x, y) -> count.getAndIncrement());
4491	>	complete.thenCombine(head, (x, y) -> count.getAndIncrement());
4492	>
4493	>	head.runAfterEither(new CompletableFuture<Void>(), () -> count.getAndIncrement());
4494	>	head.acceptEither(new CompletableFuture<Void>(), x -> count.getAndIncrement());
4495	>	head.applyToEither(new CompletableFuture<Void>(), x -> count.getAndIncrement());
4496	>	new CompletableFuture<Void>().runAfterEither(head, () -> count.getAndIncrement());
4497	>	new CompletableFuture<Void>().acceptEither(head, x -> count.getAndIncrement());
4498	>	new CompletableFuture<Void>().applyToEither(head, x -> count.getAndIncrement());
4499	>	}
4500	>	head.complete(null);
4501	>	assertEquals(5 * 3 * n, count.get());
4502	>	}
4503	>
4504	>	/** ant -Dvmoptions=-Xmx8m -Djsr166.expensiveTests=true -Djsr166.tckTestClass=CompletableFutureTest tck */
4505	>	@SuppressWarnings("FutureReturnValueIgnored")
4506	>	public void testCoCompletionGarbageRetention() throws Throwable {
4507	>	final int n = expensiveTests ? 1_000_000 : 10;
4508	>	final CompletableFuture<Integer> incomplete = new CompletableFuture<>();
4509	>	CompletableFuture<Integer> f;
4510	>	for (int i = 0; i < n; i++) {
4511	>	f = new CompletableFuture<>();
4512	>	f.runAfterEither(incomplete, () -> {});
4513	>	f.complete(null);
4514	>
4515	>	f = new CompletableFuture<>();
4516	>	f.acceptEither(incomplete, x -> {});
4517	>	f.complete(null);
4518	>
4519	>	f = new CompletableFuture<>();
4520	>	f.applyToEither(incomplete, x -> x);
4521	>	f.complete(null);
4522	>
4523	>	f = new CompletableFuture<>();
4524	>	CompletableFuture.anyOf(f, incomplete);
4525	>	f.complete(null);
4526	>	}
4527	>
4528	>	for (int i = 0; i < n; i++) {
4529	>	f = new CompletableFuture<>();
4530	>	incomplete.runAfterEither(f, () -> {});
4531	>	f.complete(null);
4532	>
4533	>	f = new CompletableFuture<>();
4534	>	incomplete.acceptEither(f, x -> {});
4535	>	f.complete(null);
4536	>
4537	>	f = new CompletableFuture<>();
4538	>	incomplete.applyToEither(f, x -> x);
4539	>	f.complete(null);
4540	>
4541	>	f = new CompletableFuture<>();
4542	>	CompletableFuture.anyOf(incomplete, f);
4543	>	f.complete(null);
4544	>	}
4545	>	}
4546	>
4547	>	/**
4548	>	* Reproduction recipe for:
4549	>	* 8160402: Garbage retention with CompletableFuture.anyOf
4550	>	* 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
4551	>	*/
4552	>	public void testAnyOfGarbageRetention() throws Throwable {
4553	>	for (Integer v : new Integer[] { 1, null })
4554	>	{
4555	>	final int n = expensiveTests ? 100_000 : 10;
4556	>	CompletableFuture<Integer>[] fs
4557	>	= (CompletableFuture<Integer>[]) new CompletableFuture<?>[100];
4558	>	for (int i = 0; i < fs.length; i++)
4559	>	fs[i] = new CompletableFuture<>();
4560	>	fs[fs.length - 1].complete(v);
4561	>	for (int i = 0; i < n; i++)
4562	>	checkCompletedNormally(CompletableFuture.anyOf(fs), v);
4563	>	}}
4564	>
4565	>	/**
4566	>	* Checks for garbage retention with allOf.
4567	>	*
4568	>	* As of 2016-07, fails with OOME:
4569	>	* ant -Dvmoptions=-Xmx8m -Djsr166.expensiveTests=true -Djsr166.tckTestClass=CompletableFutureTest -Djsr166.methodFilter=testCancelledAllOfGarbageRetention tck
4570	>	*/
4571	>	public void testCancelledAllOfGarbageRetention() throws Throwable {
4572	>	final int n = expensiveTests ? 100_000 : 10;
4573	>	CompletableFuture<Integer>[] fs
4574	>	= (CompletableFuture<Integer>[]) new CompletableFuture<?>[100];
4575	>	for (int i = 0; i < fs.length; i++)
4576	>	fs[i] = new CompletableFuture<>();
4577	>	for (int i = 0; i < n; i++)
4578	>	assertTrue(CompletableFuture.allOf(fs).cancel(false));
4579	>	}
4580	>
4581	>	/**
4582	>	* Checks for garbage retention when a dependent future is
4583	>	* cancelled and garbage-collected.
4584	>	* 8161600: Garbage retention when source CompletableFutures are never completed
4585	>	*
4586	>	* As of 2016-07, fails with OOME:
4587	>	* ant -Dvmoptions=-Xmx8m -Djsr166.expensiveTests=true -Djsr166.tckTestClass=CompletableFutureTest -Djsr166.methodFilter=testCancelledGarbageRetention tck
4588	>	*/
4589	>	public void testCancelledGarbageRetention() throws Throwable {
4590	>	final int n = expensiveTests ? 100_000 : 10;
4591	>	CompletableFuture<Integer> neverCompleted = new CompletableFuture<>();
4592	>	for (int i = 0; i < n; i++)
4593	>	assertTrue(neverCompleted.thenRun(() -> {}).cancel(true));
4594	>	}
4595	>
4596	>	/**
4597	>	* Checks for garbage retention when MinimalStage.toCompletableFuture()
4598	>	* is invoked many times.
4599	>	* 8161600: Garbage retention when source CompletableFutures are never completed
4600	>	*
4601	>	* As of 2016-07, fails with OOME:
4602	>	* ant -Dvmoptions=-Xmx8m -Djsr166.expensiveTests=true -Djsr166.tckTestClass=CompletableFutureTest -Djsr166.methodFilter=testToCompletableFutureGarbageRetention tck
4603	>	*/
4604	>	public void testToCompletableFutureGarbageRetention() throws Throwable {
4605	>	final int n = expensiveTests ? 900_000 : 10;
4606	>	CompletableFuture<Integer> neverCompleted = new CompletableFuture<>();
4607	>	CompletionStage minimal = neverCompleted.minimalCompletionStage();
4608	>	for (int i = 0; i < n; i++)
4609	>	assertTrue(minimal.toCompletableFuture().cancel(true));
4610		}
4611
4612		//     static <U> U join(CompletionStage<U> stage) {

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