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Comparing jsr166/src/test/tck/CompletableFutureTest.java (file contents):
Revision 1.82 by jsr166, Mon Jun 16 18:04:07 2014 UTC vs.
Revision 1.178 by jsr166, Wed Sep 21 19:02:50 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.atomic.AtomicInteger;
36	<	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;
36	>	import java.util.concurrent.atomic.AtomicReference;
37		import java.util.function.BiConsumer;
30	–	import java.util.function.Function;
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.AssertionFailedError;
45	+	import junit.framework.Test;
46	+	import junit.framework.TestSuite;
47
48		public class CompletableFutureTest extends JSR166TestCase {
49
50		public static void main(String[] args) {
51	<	junit.textui.TestRunner.run(suite());
51	>	main(suite(), args);
52		}
53		public static Test suite() {
54		return new TestSuite(CompletableFutureTest.class);
#	Line 44 | Line 59 | public class CompletableFutureTest exten
59		void checkIncomplete(CompletableFuture<?> f) {
60		assertFalse(f.isDone());
61		assertFalse(f.isCancelled());
62	<	assertTrue(f.toString().contains("[Not completed]"));
62	>	assertTrue(f.toString().contains("Not completed"));
63		try {
64		assertNull(f.getNow(null));
65		} catch (Throwable fail) { threadUnexpectedException(fail); }
#	Line 57 | Line 72 | public class CompletableFutureTest exten
72		}
73
74		<T> void checkCompletedNormally(CompletableFuture<T> f, T value) {
75	<	try {
76	<	assertEquals(value, f.get(LONG_DELAY_MS, MILLISECONDS));
62	<	} catch (Throwable fail) { threadUnexpectedException(fail); }
75	>	checkTimedGet(f, value);
76	>
77		try {
78		assertEquals(value, f.join());
79		} catch (Throwable fail) { threadUnexpectedException(fail); }
#	Line 75 | Line 89 | public class CompletableFutureTest exten
89		assertTrue(f.toString().contains("[Completed normally]"));
90		}
91
92	<	void checkCompletedWithWrappedCFException(CompletableFuture<?> f) {
93	<	try {
94	<	f.get(LONG_DELAY_MS, MILLISECONDS);
95	<	shouldThrow();
96	<	} catch (ExecutionException success) {
97	<	assertTrue(success.getCause() instanceof CFException);
98	<	} catch (Throwable fail) { threadUnexpectedException(fail); }
99	<	try {
100	<	f.join();
101	<	shouldThrow();
102	<	} catch (CompletionException success) {
103	<	assertTrue(success.getCause() instanceof CFException);
104	<	}
105	<	try {
106	<	f.getNow(null);
107	<	shouldThrow();
108	<	} catch (CompletionException success) {
95	<	assertTrue(success.getCause() instanceof CFException);
92	>	/**
93	>	* Returns the "raw" internal exceptional completion of f,
94	>	* without any additional wrapping with CompletionException.
95	>	*/
96	>	<U> Throwable exceptionalCompletion(CompletableFuture<U> f) {
97	>	// handle (and whenComplete) can distinguish between "direct"
98	>	// and "wrapped" exceptional completion
99	>	return f.handle((U u, Throwable t) -> t).join();
100	>	}
101	>
102	>	void checkCompletedExceptionally(CompletableFuture<?> f,
103	>	boolean wrapped,
104	>	Consumer<Throwable> checker) {
105	>	Throwable cause = exceptionalCompletion(f);
106	>	if (wrapped) {
107	>	assertTrue(cause instanceof CompletionException);
108	>	cause = cause.getCause();
109		}
110	<	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	<	}
110	>	checker.accept(cause);
111
112	<	<U> void checkCompletedExceptionallyWithRootCause(CompletableFuture<U> f,
109	<	Throwable ex) {
112	>	long startTime = System.nanoTime();
113		try {
114		f.get(LONG_DELAY_MS, MILLISECONDS);
115		shouldThrow();
116		} catch (ExecutionException success) {
117	<	assertSame(ex, success.getCause());
117	>	assertSame(cause, success.getCause());
118		} catch (Throwable fail) { threadUnexpectedException(fail); }
119	+	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS / 2);
120	+
121		try {
122		f.join();
123		shouldThrow();
124		} catch (CompletionException success) {
125	<	assertSame(ex, success.getCause());
126	<	}
125	>	assertSame(cause, success.getCause());
126	>	} catch (Throwable fail) { threadUnexpectedException(fail); }
127	>
128		try {
129		f.getNow(null);
130		shouldThrow();
131		} catch (CompletionException success) {
132	<	assertSame(ex, success.getCause());
133	<	}
132	>	assertSame(cause, success.getCause());
133	>	} catch (Throwable fail) { threadUnexpectedException(fail); }
134	>
135		try {
136		f.get();
137		shouldThrow();
138		} catch (ExecutionException success) {
139	<	assertSame(ex, success.getCause());
139	>	assertSame(cause, success.getCause());
140		} catch (Throwable fail) { threadUnexpectedException(fail); }
141
135	–	assertTrue(f.isDone());
142		assertFalse(f.isCancelled());
143	+	assertTrue(f.isDone());
144	+	assertTrue(f.isCompletedExceptionally());
145		assertTrue(f.toString().contains("[Completed exceptionally]"));
146		}
147
148	<	<U> void checkCompletedWithWrappedException(CompletableFuture<U> f,
149	<	Throwable ex) {
150	<	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); }
148	>	void checkCompletedWithWrappedCFException(CompletableFuture<?> f) {
149	>	checkCompletedExceptionally(f, true,
150	>	(t) -> assertTrue(t instanceof CFException));
151		}
152
153	<	<U> void checkCompletedExceptionally(CompletableFuture<U> f, Throwable ex) {
154	<	checkCompletedExceptionallyWithRootCause(f, ex);
155	<	try {
156	<	CompletableFuture<Throwable> spy = f.handle
157	<	((U u, Throwable t) -> t);
158	<	assertSame(ex, spy.join());
159	<	} catch (Throwable fail) { threadUnexpectedException(fail); }
153	>	void checkCompletedWithWrappedCancellationException(CompletableFuture<?> f) {
154	>	checkCompletedExceptionally(f, true,
155	>	(t) -> assertTrue(t instanceof CancellationException));
156	>	}
157	>
158	>	void checkCompletedWithTimeoutException(CompletableFuture<?> f) {
159	>	checkCompletedExceptionally(f, false,
160	>	(t) -> assertTrue(t instanceof TimeoutException));
161	>	}
162	>
163	>	void checkCompletedWithWrappedException(CompletableFuture<?> f,
164	>	Throwable ex) {
165	>	checkCompletedExceptionally(f, true, (t) -> assertSame(t, ex));
166	>	}
167	>
168	>	void checkCompletedExceptionally(CompletableFuture<?> f, Throwable ex) {
169	>	checkCompletedExceptionally(f, false, (t) -> assertSame(t, ex));
170		}
171
172		void checkCancelled(CompletableFuture<?> f) {
173	+	long startTime = System.nanoTime();
174		try {
175		f.get(LONG_DELAY_MS, MILLISECONDS);
176		shouldThrow();
177		} catch (CancellationException success) {
178		} catch (Throwable fail) { threadUnexpectedException(fail); }
179	+	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS / 2);
180	+
181		try {
182		f.join();
183		shouldThrow();
#	Line 176 | Line 191 | public class CompletableFutureTest exten
191		shouldThrow();
192		} catch (CancellationException success) {
193		} 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	–	}
194
195	<	void checkCompletedWithWrappedCancellationException(CompletableFuture<?> f) {
196	<	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); }
195	>	assertTrue(exceptionalCompletion(f) instanceof CancellationException);
196	>
197		assertTrue(f.isDone());
211	–	assertFalse(f.isCancelled());
198		assertTrue(f.isCompletedExceptionally());
199	+	assertTrue(f.isCancelled());
200		assertTrue(f.toString().contains("[Completed exceptionally]"));
201		}
202
#	Line 257 | Line 244 | public class CompletableFutureTest exten
244		{
245		CompletableFuture<Integer> f = new CompletableFuture<>();
246		checkIncomplete(f);
247	<	assertTrue(f.cancel(true));
248	<	assertTrue(f.cancel(true));
247	>	assertTrue(f.cancel(mayInterruptIfRunning));
248	>	assertTrue(f.cancel(mayInterruptIfRunning));
249	>	assertTrue(f.cancel(!mayInterruptIfRunning));
250		checkCancelled(f);
251		}}
252
#	Line 373 | Line 361 | public class CompletableFutureTest exten
361		checkCompletedNormally(f, "test");
362		}
363
364	<	abstract class CheckedAction {
364	>	abstract static class CheckedAction {
365		int invocationCount = 0;
366		final ExecutionMode m;
367		CheckedAction(ExecutionMode m) { this.m = m; }
#	Line 385 | Line 373 | public class CompletableFutureTest exten
373		void assertInvoked() { assertEquals(1, invocationCount); }
374		}
375
376	<	abstract class CheckedIntegerAction extends CheckedAction {
376	>	abstract static class CheckedIntegerAction extends CheckedAction {
377		Integer value;
378		CheckedIntegerAction(ExecutionMode m) { super(m); }
379		void assertValue(Integer expected) {
#	Line 394 | Line 382 | public class CompletableFutureTest exten
382		}
383		}
384
385	<	class IntegerSupplier extends CheckedAction
385	>	static class IntegerSupplier extends CheckedAction
386		implements Supplier<Integer>
387		{
388		final Integer value;
#	Line 413 | Line 401 | public class CompletableFutureTest exten
401		return (x == null) ? null : x + 1;
402		}
403
404	<	class NoopConsumer extends CheckedIntegerAction
404	>	static class NoopConsumer extends CheckedIntegerAction
405		implements Consumer<Integer>
406		{
407		NoopConsumer(ExecutionMode m) { super(m); }
#	Line 423 | Line 411 | public class CompletableFutureTest exten
411		}
412		}
413
414	<	class IncFunction extends CheckedIntegerAction
414	>	static class IncFunction extends CheckedIntegerAction
415		implements Function<Integer,Integer>
416		{
417		IncFunction(ExecutionMode m) { super(m); }
#	Line 441 | Line 429 | public class CompletableFutureTest exten
429		- ((y == null) ? 99 : y.intValue());
430		}
431
432	<	class SubtractAction extends CheckedIntegerAction
432	>	static class SubtractAction extends CheckedIntegerAction
433		implements BiConsumer<Integer, Integer>
434		{
435		SubtractAction(ExecutionMode m) { super(m); }
#	Line 451 | Line 439 | public class CompletableFutureTest exten
439		}
440		}
441
442	<	class SubtractFunction extends CheckedIntegerAction
442	>	static class SubtractFunction extends CheckedIntegerAction
443		implements BiFunction<Integer, Integer, Integer>
444		{
445		SubtractFunction(ExecutionMode m) { super(m); }
#	Line 461 | Line 449 | public class CompletableFutureTest exten
449		}
450		}
451
452	<	class Noop extends CheckedAction implements Runnable {
452	>	static class Noop extends CheckedAction implements Runnable {
453		Noop(ExecutionMode m) { super(m); }
454		public void run() {
455		invoked();
456		}
457		}
458
459	<	class FailingSupplier extends CheckedAction
459	>	static class FailingSupplier extends CheckedAction
460		implements Supplier<Integer>
461		{
462	<	FailingSupplier(ExecutionMode m) { super(m); }
462	>	final CFException ex;
463	>	FailingSupplier(ExecutionMode m) { super(m); ex = new CFException(); }
464		public Integer get() {
465		invoked();
466	<	throw new CFException();
466	>	throw ex;
467		}
468		}
469
470	<	class FailingConsumer extends CheckedIntegerAction
470	>	static class FailingConsumer extends CheckedIntegerAction
471		implements Consumer<Integer>
472		{
473	<	FailingConsumer(ExecutionMode m) { super(m); }
473	>	final CFException ex;
474	>	FailingConsumer(ExecutionMode m) { super(m); ex = new CFException(); }
475		public void accept(Integer x) {
476		invoked();
477		value = x;
478	<	throw new CFException();
478	>	throw ex;
479		}
480		}
481
482	<	class FailingBiConsumer extends CheckedIntegerAction
482	>	static class FailingBiConsumer extends CheckedIntegerAction
483		implements BiConsumer<Integer, Integer>
484		{
485	<	FailingBiConsumer(ExecutionMode m) { super(m); }
485	>	final CFException ex;
486	>	FailingBiConsumer(ExecutionMode m) { super(m); ex = new CFException(); }
487		public void accept(Integer x, Integer y) {
488		invoked();
489		value = subtract(x, y);
490	<	throw new CFException();
490	>	throw ex;
491		}
492		}
493
494	<	class FailingFunction extends CheckedIntegerAction
494	>	static class FailingFunction extends CheckedIntegerAction
495		implements Function<Integer, Integer>
496		{
497	<	FailingFunction(ExecutionMode m) { super(m); }
497	>	final CFException ex;
498	>	FailingFunction(ExecutionMode m) { super(m); ex = new CFException(); }
499		public Integer apply(Integer x) {
500		invoked();
501		value = x;
502	<	throw new CFException();
502	>	throw ex;
503		}
504		}
505
506	<	class FailingBiFunction extends CheckedIntegerAction
506	>	static class FailingBiFunction extends CheckedIntegerAction
507		implements BiFunction<Integer, Integer, Integer>
508		{
509	<	FailingBiFunction(ExecutionMode m) { super(m); }
509	>	final CFException ex;
510	>	FailingBiFunction(ExecutionMode m) { super(m); ex = new CFException(); }
511		public Integer apply(Integer x, Integer y) {
512		invoked();
513		value = subtract(x, y);
514	<	throw new CFException();
514	>	throw ex;
515		}
516		}
517
518	<	class FailingRunnable extends CheckedAction implements Runnable {
519	<	FailingRunnable(ExecutionMode m) { super(m); }
518	>	static class FailingRunnable extends CheckedAction implements Runnable {
519	>	final CFException ex;
520	>	FailingRunnable(ExecutionMode m) { super(m); ex = new CFException(); }
521		public void run() {
522		invoked();
523	<	throw new CFException();
523	>	throw ex;
524		}
525		}
526
527	<
534	<	class CompletableFutureInc extends CheckedIntegerAction
527	>	static class CompletableFutureInc extends CheckedIntegerAction
528		implements Function<Integer, CompletableFuture<Integer>>
529		{
530		CompletableFutureInc(ExecutionMode m) { super(m); }
#	Line 544 | Line 537 | public class CompletableFutureTest exten
537		}
538		}
539
540	<	class FailingCompletableFutureFunction extends CheckedIntegerAction
540	>	static class FailingCompletableFutureFunction extends CheckedIntegerAction
541		implements Function<Integer, CompletableFuture<Integer>>
542		{
543	<	FailingCompletableFutureFunction(ExecutionMode m) { super(m); }
543	>	final CFException ex;
544	>	FailingCompletableFutureFunction(ExecutionMode m) { super(m); ex = new CFException(); }
545		public CompletableFuture<Integer> apply(Integer x) {
546		invoked();
547		value = x;
548	<	throw new CFException();
548	>	throw ex;
549	>	}
550	>	}
551	>
552	>	static class CountingRejectingExecutor implements Executor {
553	>	final RejectedExecutionException ex = new RejectedExecutionException();
554	>	final AtomicInteger count = new AtomicInteger(0);
555	>	public void execute(Runnable r) {
556	>	count.getAndIncrement();
557	>	throw ex;
558		}
559		}
560
#	Line 569 | Line 572 | public class CompletableFutureTest exten
572		}
573		}
574
575	+	static final boolean defaultExecutorIsCommonPool
576	+	= ForkJoinPool.getCommonPoolParallelism() > 1;
577	+
578		/**
579		* Permits the testing of parallel code for the 3 different
580		* execution modes without copy/pasting all the test methods.
581		*/
582		enum ExecutionMode {
583	<	DEFAULT {
583	>	SYNC {
584		public void checkExecutionMode() {
585		assertFalse(ThreadExecutor.startedCurrentThread());
586		assertNull(ForkJoinTask.getPool());
#	Line 650 | Line 656 | public class CompletableFutureTest exten
656
657		ASYNC {
658		public void checkExecutionMode() {
659	<	assertSame(ForkJoinPool.commonPool(),
660	<	ForkJoinTask.getPool());
659	>	assertEquals(defaultExecutorIsCommonPool,
660	>	(ForkJoinPool.commonPool() == ForkJoinTask.getPool()));
661		}
662		public CompletableFuture<Void> runAsync(Runnable a) {
663		return CompletableFuture.runAsync(a);
#	Line 850 | Line 856 | public class CompletableFutureTest exten
856		if (!createIncomplete) assertTrue(f.complete(v1));
857		final CompletableFuture<Integer> g = f.exceptionally
858		((Throwable t) -> {
853	–	// Should not be called
859		a.getAndIncrement();
860	<	throw new AssertionError();
860	>	threadFail("should not be called");
861	>	return null;            // unreached
862		});
863		if (createIncomplete) assertTrue(f.complete(v1));
864
#	Line 875 | Line 881 | public class CompletableFutureTest exten
881		if (!createIncomplete) f.completeExceptionally(ex);
882		final CompletableFuture<Integer> g = f.exceptionally
883		((Throwable t) -> {
884	<	ExecutionMode.DEFAULT.checkExecutionMode();
884	>	ExecutionMode.SYNC.checkExecutionMode();
885		threadAssertSame(t, ex);
886		a.getAndIncrement();
887		return v1;
#	Line 886 | Line 892 | public class CompletableFutureTest exten
892		assertEquals(1, a.get());
893		}}
894
895	+	/**
896	+	* If an "exceptionally action" throws an exception, it completes
897	+	* exceptionally with that exception
898	+	*/
899		public void testExceptionally_exceptionalCompletionActionFailed() {
900		for (boolean createIncomplete : new boolean[] { true, false })
891	–	for (Integer v1 : new Integer[] { 1, null })
901		{
902		final AtomicInteger a = new AtomicInteger(0);
903		final CFException ex1 = new CFException();
#	Line 897 | Line 906 | public class CompletableFutureTest exten
906		if (!createIncomplete) f.completeExceptionally(ex1);
907		final CompletableFuture<Integer> g = f.exceptionally
908		((Throwable t) -> {
909	<	ExecutionMode.DEFAULT.checkExecutionMode();
909	>	ExecutionMode.SYNC.checkExecutionMode();
910		threadAssertSame(t, ex1);
911		a.getAndIncrement();
912		throw ex2;
#	Line 905 | Line 914 | public class CompletableFutureTest exten
914		if (createIncomplete) f.completeExceptionally(ex1);
915
916		checkCompletedWithWrappedException(g, ex2);
917	+	checkCompletedExceptionally(f, ex1);
918		assertEquals(1, a.get());
919		}}
920
#	Line 912 | Line 922 | public class CompletableFutureTest exten
922		* whenComplete action executes on normal completion, propagating
923		* source result.
924		*/
925	<	public void testWhenComplete_normalCompletion1() {
925	>	public void testWhenComplete_normalCompletion() {
926		for (ExecutionMode m : ExecutionMode.values())
927		for (boolean createIncomplete : new boolean[] { true, false })
928		for (Integer v1 : new Integer[] { 1, null })
#	Line 922 | Line 932 | public class CompletableFutureTest exten
932		if (!createIncomplete) assertTrue(f.complete(v1));
933		final CompletableFuture<Integer> g = m.whenComplete
934		(f,
935	<	(Integer x, Throwable t) -> {
935	>	(Integer result, Throwable t) -> {
936		m.checkExecutionMode();
937	<	threadAssertSame(x, v1);
937	>	threadAssertSame(result, v1);
938		threadAssertNull(t);
939		a.getAndIncrement();
940		});
#	Line 942 | Line 952 | public class CompletableFutureTest exten
952		public void testWhenComplete_exceptionalCompletion() {
953		for (ExecutionMode m : ExecutionMode.values())
954		for (boolean createIncomplete : new boolean[] { true, false })
945	–	for (Integer v1 : new Integer[] { 1, null })
955		{
956		final AtomicInteger a = new AtomicInteger(0);
957		final CFException ex = new CFException();
#	Line 950 | Line 959 | public class CompletableFutureTest exten
959		if (!createIncomplete) f.completeExceptionally(ex);
960		final CompletableFuture<Integer> g = m.whenComplete
961		(f,
962	<	(Integer x, Throwable t) -> {
962	>	(Integer result, Throwable t) -> {
963		m.checkExecutionMode();
964	<	threadAssertNull(x);
964	>	threadAssertNull(result);
965		threadAssertSame(t, ex);
966		a.getAndIncrement();
967		});
#	Line 977 | Line 986 | public class CompletableFutureTest exten
986		if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
987		final CompletableFuture<Integer> g = m.whenComplete
988		(f,
989	<	(Integer x, Throwable t) -> {
989	>	(Integer result, Throwable t) -> {
990		m.checkExecutionMode();
991	<	threadAssertNull(x);
991	>	threadAssertNull(result);
992		threadAssertTrue(t instanceof CancellationException);
993		a.getAndIncrement();
994		});
#	Line 994 | Line 1003 | public class CompletableFutureTest exten
1003		* If a whenComplete action throws an exception when triggered by
1004		* a normal completion, it completes exceptionally
1005		*/
1006	<	public void testWhenComplete_actionFailed() {
1006	>	public void testWhenComplete_sourceCompletedNormallyActionFailed() {
1007		for (boolean createIncomplete : new boolean[] { true, false })
1008		for (ExecutionMode m : ExecutionMode.values())
1009		for (Integer v1 : new Integer[] { 1, null })
#	Line 1005 | Line 1014 | public class CompletableFutureTest exten
1014		if (!createIncomplete) assertTrue(f.complete(v1));
1015		final CompletableFuture<Integer> g = m.whenComplete
1016		(f,
1017	<	(Integer x, Throwable t) -> {
1017	>	(Integer result, Throwable t) -> {
1018		m.checkExecutionMode();
1019	<	threadAssertSame(x, v1);
1019	>	threadAssertSame(result, v1);
1020		threadAssertNull(t);
1021		a.getAndIncrement();
1022		throw ex;
#	Line 1022 | Line 1031 | public class CompletableFutureTest exten
1031		/**
1032		* If a whenComplete action throws an exception when triggered by
1033		* a source completion that also throws an exception, the source
1034	<	* exception takes precedence.
1034	>	* exception takes precedence (unlike handle)
1035		*/
1036	<	public void testWhenComplete_actionFailedSourceFailed() {
1036	>	public void testWhenComplete_sourceFailedActionFailed() {
1037		for (boolean createIncomplete : new boolean[] { true, false })
1038		for (ExecutionMode m : ExecutionMode.values())
1030	–	for (Integer v1 : new Integer[] { 1, null })
1039		{
1040		final AtomicInteger a = new AtomicInteger(0);
1041		final CFException ex1 = new CFException();
#	Line 1037 | Line 1045 | public class CompletableFutureTest exten
1045		if (!createIncomplete) f.completeExceptionally(ex1);
1046		final CompletableFuture<Integer> g = m.whenComplete
1047		(f,
1048	<	(Integer x, Throwable t) -> {
1048	>	(Integer result, Throwable t) -> {
1049		m.checkExecutionMode();
1050		threadAssertSame(t, ex1);
1051	<	threadAssertNull(x);
1051	>	threadAssertNull(result);
1052		a.getAndIncrement();
1053		throw ex2;
1054		});
#	Line 1048 | Line 1056 | public class CompletableFutureTest exten
1056
1057		checkCompletedWithWrappedException(g, ex1);
1058		checkCompletedExceptionally(f, ex1);
1059	+	if (testImplementationDetails) {
1060	+	assertEquals(1, ex1.getSuppressed().length);
1061	+	assertSame(ex2, ex1.getSuppressed()[0]);
1062	+	}
1063		assertEquals(1, a.get());
1064		}}
1065
#	Line 1065 | Line 1077 | public class CompletableFutureTest exten
1077		if (!createIncomplete) assertTrue(f.complete(v1));
1078		final CompletableFuture<Integer> g = m.handle
1079		(f,
1080	<	(Integer x, Throwable t) -> {
1080	>	(Integer result, Throwable t) -> {
1081		m.checkExecutionMode();
1082	<	threadAssertSame(x, v1);
1082	>	threadAssertSame(result, v1);
1083		threadAssertNull(t);
1084		a.getAndIncrement();
1085		return inc(v1);
#	Line 1094 | Line 1106 | public class CompletableFutureTest exten
1106		if (!createIncomplete) f.completeExceptionally(ex);
1107		final CompletableFuture<Integer> g = m.handle
1108		(f,
1109	<	(Integer x, Throwable t) -> {
1109	>	(Integer result, Throwable t) -> {
1110		m.checkExecutionMode();
1111	<	threadAssertNull(x);
1111	>	threadAssertNull(result);
1112		threadAssertSame(t, ex);
1113		a.getAndIncrement();
1114		return v1;
#	Line 1123 | Line 1135 | public class CompletableFutureTest exten
1135		if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
1136		final CompletableFuture<Integer> g = m.handle
1137		(f,
1138	<	(Integer x, Throwable t) -> {
1138	>	(Integer result, Throwable t) -> {
1139		m.checkExecutionMode();
1140	<	threadAssertNull(x);
1140	>	threadAssertNull(result);
1141		threadAssertTrue(t instanceof CancellationException);
1142		a.getAndIncrement();
1143		return v1;
#	Line 1138 | Line 1150 | public class CompletableFutureTest exten
1150		}}
1151
1152		/**
1153	<	* handle result completes exceptionally if action does
1153	>	* If a "handle action" throws an exception when triggered by
1154	>	* a normal completion, it completes exceptionally
1155		*/
1156	<	public void testHandle_sourceFailedActionFailed() {
1156	>	public void testHandle_sourceCompletedNormallyActionFailed() {
1157		for (ExecutionMode m : ExecutionMode.values())
1158		for (boolean createIncomplete : new boolean[] { true, false })
1159	+	for (Integer v1 : new Integer[] { 1, null })
1160		{
1161		final CompletableFuture<Integer> f = new CompletableFuture<>();
1162		final AtomicInteger a = new AtomicInteger(0);
1163	<	final CFException ex1 = new CFException();
1164	<	final CFException ex2 = new CFException();
1151	<	if (!createIncomplete) f.completeExceptionally(ex1);
1163	>	final CFException ex = new CFException();
1164	>	if (!createIncomplete) assertTrue(f.complete(v1));
1165		final CompletableFuture<Integer> g = m.handle
1166		(f,
1167	<	(Integer x, Throwable t) -> {
1167	>	(Integer result, Throwable t) -> {
1168		m.checkExecutionMode();
1169	<	threadAssertNull(x);
1170	<	threadAssertSame(ex1, t);
1169	>	threadAssertSame(result, v1);
1170	>	threadAssertNull(t);
1171		a.getAndIncrement();
1172	<	throw ex2;
1172	>	throw ex;
1173		});
1174	<	if (createIncomplete) f.completeExceptionally(ex1);
1174	>	if (createIncomplete) assertTrue(f.complete(v1));
1175
1176	<	checkCompletedWithWrappedException(g, ex2);
1177	<	checkCompletedExceptionally(f, ex1);
1176	>	checkCompletedWithWrappedException(g, ex);
1177	>	checkCompletedNormally(f, v1);
1178		assertEquals(1, a.get());
1179		}}
1180
1181	<	public void testHandle_sourceCompletedNormallyActionFailed() {
1182	<	for (ExecutionMode m : ExecutionMode.values())
1181	>	/**
1182	>	* If a "handle action" throws an exception when triggered by
1183	>	* a source completion that also throws an exception, the action
1184	>	* exception takes precedence (unlike whenComplete)
1185	>	*/
1186	>	public void testHandle_sourceFailedActionFailed() {
1187		for (boolean createIncomplete : new boolean[] { true, false })
1188	<	for (Integer v1 : new Integer[] { 1, null })
1188	>	for (ExecutionMode m : ExecutionMode.values())
1189		{
1173	–	final CompletableFuture<Integer> f = new CompletableFuture<>();
1190		final AtomicInteger a = new AtomicInteger(0);
1191	<	final CFException ex = new CFException();
1192	<	if (!createIncomplete) assertTrue(f.complete(v1));
1191	>	final CFException ex1 = new CFException();
1192	>	final CFException ex2 = new CFException();
1193	>	final CompletableFuture<Integer> f = new CompletableFuture<>();
1194	>
1195	>	if (!createIncomplete) f.completeExceptionally(ex1);
1196		final CompletableFuture<Integer> g = m.handle
1197		(f,
1198	<	(Integer x, Throwable t) -> {
1198	>	(Integer result, Throwable t) -> {
1199		m.checkExecutionMode();
1200	<	threadAssertSame(x, v1);
1201	<	threadAssertNull(t);
1200	>	threadAssertNull(result);
1201	>	threadAssertSame(ex1, t);
1202		a.getAndIncrement();
1203	<	throw ex;
1203	>	throw ex2;
1204		});
1205	<	if (createIncomplete) assertTrue(f.complete(v1));
1205	>	if (createIncomplete) f.completeExceptionally(ex1);
1206
1207	<	checkCompletedWithWrappedException(g, ex);
1208	<	checkCompletedNormally(f, v1);
1207	>	checkCompletedWithWrappedException(g, ex2);
1208	>	checkCompletedExceptionally(f, ex1);
1209		assertEquals(1, a.get());
1210		}}
1211
#	Line 1219 | Line 1238 | public class CompletableFutureTest exten
1238		{
1239		final FailingRunnable r = new FailingRunnable(m);
1240		final CompletableFuture<Void> f = m.runAsync(r);
1241	<	checkCompletedWithWrappedCFException(f);
1241	>	checkCompletedWithWrappedException(f, r.ex);
1242		r.assertInvoked();
1243		}}
1244
1245	+	public void testRunAsync_rejectingExecutor() {
1246	+	CountingRejectingExecutor e = new CountingRejectingExecutor();
1247	+	try {
1248	+	CompletableFuture.runAsync(() -> {}, e);
1249	+	shouldThrow();
1250	+	} catch (Throwable t) {
1251	+	assertSame(e.ex, t);
1252	+	}
1253	+
1254	+	assertEquals(1, e.count.get());
1255	+	}
1256	+
1257		/**
1258		* supplyAsync completes with result of supplier
1259		*/
#	Line 1253 | Line 1284 | public class CompletableFutureTest exten
1284		{
1285		FailingSupplier r = new FailingSupplier(m);
1286		CompletableFuture<Integer> f = m.supplyAsync(r);
1287	<	checkCompletedWithWrappedCFException(f);
1287	>	checkCompletedWithWrappedException(f, r.ex);
1288		r.assertInvoked();
1289		}}
1290
1291	+	public void testSupplyAsync_rejectingExecutor() {
1292	+	CountingRejectingExecutor e = new CountingRejectingExecutor();
1293	+	try {
1294	+	CompletableFuture.supplyAsync(() -> null, e);
1295	+	shouldThrow();
1296	+	} catch (Throwable t) {
1297	+	assertSame(e.ex, t);
1298	+	}
1299	+
1300	+	assertEquals(1, e.count.get());
1301	+	}
1302	+
1303		// seq completion methods
1304
1305		/**
#	Line 1264 | Line 1307 | public class CompletableFutureTest exten
1307		*/
1308		public void testThenRun_normalCompletion() {
1309		for (ExecutionMode m : ExecutionMode.values())
1267	–	for (boolean createIncomplete : new boolean[] { true, false })
1310		for (Integer v1 : new Integer[] { 1, null })
1311		{
1312		final CompletableFuture<Integer> f = new CompletableFuture<>();
1313	<	final Noop r = new Noop(m);
1314	<	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	<	}
1313	>	final Noop[] rs = new Noop[6];
1314	>	for (int i = 0; i < rs.length; i++) rs[i] = new Noop(m);
1315
1316	<	checkCompletedNormally(g, null);
1316	>	final CompletableFuture<Void> h0 = m.thenRun(f, rs[0]);
1317	>	final CompletableFuture<Void> h1 = m.runAfterBoth(f, f, rs[1]);
1318	>	final CompletableFuture<Void> h2 = m.runAfterEither(f, f, rs[2]);
1319	>	checkIncomplete(h0);
1320	>	checkIncomplete(h1);
1321	>	checkIncomplete(h2);
1322	>	assertTrue(f.complete(v1));
1323	>	final CompletableFuture<Void> h3 = m.thenRun(f, rs[3]);
1324	>	final CompletableFuture<Void> h4 = m.runAfterBoth(f, f, rs[4]);
1325	>	final CompletableFuture<Void> h5 = m.runAfterEither(f, f, rs[5]);
1326	>
1327	>	checkCompletedNormally(h0, null);
1328	>	checkCompletedNormally(h1, null);
1329	>	checkCompletedNormally(h2, null);
1330	>	checkCompletedNormally(h3, null);
1331	>	checkCompletedNormally(h4, null);
1332	>	checkCompletedNormally(h5, null);
1333		checkCompletedNormally(f, v1);
1334	<	r.assertInvoked();
1334	>	for (Noop r : rs) r.assertInvoked();
1335		}}
1336
1337		/**
#	Line 1287 | Line 1340 | public class CompletableFutureTest exten
1340		*/
1341		public void testThenRun_exceptionalCompletion() {
1342		for (ExecutionMode m : ExecutionMode.values())
1290	–	for (boolean createIncomplete : new boolean[] { true, false })
1343		{
1344		final CFException ex = new CFException();
1345		final CompletableFuture<Integer> f = new CompletableFuture<>();
1346	<	final Noop r = new Noop(m);
1347	<	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	<	}
1346	>	final Noop[] rs = new Noop[6];
1347	>	for (int i = 0; i < rs.length; i++) rs[i] = new Noop(m);
1348
1349	<	checkCompletedWithWrappedException(g, ex);
1349	>	final CompletableFuture<Void> h0 = m.thenRun(f, rs[0]);
1350	>	final CompletableFuture<Void> h1 = m.runAfterBoth(f, f, rs[1]);
1351	>	final CompletableFuture<Void> h2 = m.runAfterEither(f, f, rs[2]);
1352	>	checkIncomplete(h0);
1353	>	checkIncomplete(h1);
1354	>	checkIncomplete(h2);
1355	>	assertTrue(f.completeExceptionally(ex));
1356	>	final CompletableFuture<Void> h3 = m.thenRun(f, rs[3]);
1357	>	final CompletableFuture<Void> h4 = m.runAfterBoth(f, f, rs[4]);
1358	>	final CompletableFuture<Void> h5 = m.runAfterEither(f, f, rs[5]);
1359	>
1360	>	checkCompletedWithWrappedException(h0, ex);
1361	>	checkCompletedWithWrappedException(h1, ex);
1362	>	checkCompletedWithWrappedException(h2, ex);
1363	>	checkCompletedWithWrappedException(h3, ex);
1364	>	checkCompletedWithWrappedException(h4, ex);
1365	>	checkCompletedWithWrappedException(h5, ex);
1366		checkCompletedExceptionally(f, ex);
1367	<	r.assertNotInvoked();
1367	>	for (Noop r : rs) r.assertNotInvoked();
1368		}}
1369
1370		/**
#	Line 1309 | Line 1372 | public class CompletableFutureTest exten
1372		*/
1373		public void testThenRun_sourceCancelled() {
1374		for (ExecutionMode m : ExecutionMode.values())
1312	–	for (boolean createIncomplete : new boolean[] { true, false })
1375		for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1376		{
1377		final CompletableFuture<Integer> f = new CompletableFuture<>();
1378	<	final Noop r = new Noop(m);
1379	<	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	<	}
1378	>	final Noop[] rs = new Noop[6];
1379	>	for (int i = 0; i < rs.length; i++) rs[i] = new Noop(m);
1380
1381	<	checkCompletedWithWrappedCancellationException(g);
1381	>	final CompletableFuture<Void> h0 = m.thenRun(f, rs[0]);
1382	>	final CompletableFuture<Void> h1 = m.runAfterBoth(f, f, rs[1]);
1383	>	final CompletableFuture<Void> h2 = m.runAfterEither(f, f, rs[2]);
1384	>	checkIncomplete(h0);
1385	>	checkIncomplete(h1);
1386	>	checkIncomplete(h2);
1387	>	assertTrue(f.cancel(mayInterruptIfRunning));
1388	>	final CompletableFuture<Void> h3 = m.thenRun(f, rs[3]);
1389	>	final CompletableFuture<Void> h4 = m.runAfterBoth(f, f, rs[4]);
1390	>	final CompletableFuture<Void> h5 = m.runAfterEither(f, f, rs[5]);
1391	>
1392	>	checkCompletedWithWrappedCancellationException(h0);
1393	>	checkCompletedWithWrappedCancellationException(h1);
1394	>	checkCompletedWithWrappedCancellationException(h2);
1395	>	checkCompletedWithWrappedCancellationException(h3);
1396	>	checkCompletedWithWrappedCancellationException(h4);
1397	>	checkCompletedWithWrappedCancellationException(h5);
1398		checkCancelled(f);
1399	<	r.assertNotInvoked();
1399	>	for (Noop r : rs) r.assertNotInvoked();
1400		}}
1401
1402		/**
#	Line 1331 | Line 1404 | public class CompletableFutureTest exten
1404		*/
1405		public void testThenRun_actionFailed() {
1406		for (ExecutionMode m : ExecutionMode.values())
1334	–	for (boolean createIncomplete : new boolean[] { true, false })
1407		for (Integer v1 : new Integer[] { 1, null })
1408		{
1409		final CompletableFuture<Integer> f = new CompletableFuture<>();
1410	<	final FailingRunnable r = new FailingRunnable(m);
1411	<	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	<	}
1410	>	final FailingRunnable[] rs = new FailingRunnable[6];
1411	>	for (int i = 0; i < rs.length; i++) rs[i] = new FailingRunnable(m);
1412
1413	<	checkCompletedWithWrappedCFException(g);
1413	>	final CompletableFuture<Void> h0 = m.thenRun(f, rs[0]);
1414	>	final CompletableFuture<Void> h1 = m.runAfterBoth(f, f, rs[1]);
1415	>	final CompletableFuture<Void> h2 = m.runAfterEither(f, f, rs[2]);
1416	>	assertTrue(f.complete(v1));
1417	>	final CompletableFuture<Void> h3 = m.thenRun(f, rs[3]);
1418	>	final CompletableFuture<Void> h4 = m.runAfterBoth(f, f, rs[4]);
1419	>	final CompletableFuture<Void> h5 = m.runAfterEither(f, f, rs[5]);
1420	>
1421	>	checkCompletedWithWrappedException(h0, rs[0].ex);
1422	>	checkCompletedWithWrappedException(h1, rs[1].ex);
1423	>	checkCompletedWithWrappedException(h2, rs[2].ex);
1424	>	checkCompletedWithWrappedException(h3, rs[3].ex);
1425	>	checkCompletedWithWrappedException(h4, rs[4].ex);
1426	>	checkCompletedWithWrappedException(h5, rs[5].ex);
1427		checkCompletedNormally(f, v1);
1428		}}
1429
#	Line 1352 | Line 1432 | public class CompletableFutureTest exten
1432		*/
1433		public void testThenApply_normalCompletion() {
1434		for (ExecutionMode m : ExecutionMode.values())
1355	–	for (boolean createIncomplete : new boolean[] { true, false })
1435		for (Integer v1 : new Integer[] { 1, null })
1436		{
1437		final CompletableFuture<Integer> f = new CompletableFuture<>();
1438	<	final IncFunction r = new IncFunction(m);
1439	<	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	<	}
1438	>	final IncFunction[] rs = new IncFunction[4];
1439	>	for (int i = 0; i < rs.length; i++) rs[i] = new IncFunction(m);
1440
1441	<	checkCompletedNormally(g, inc(v1));
1441	>	final CompletableFuture<Integer> h0 = m.thenApply(f, rs[0]);
1442	>	final CompletableFuture<Integer> h1 = m.applyToEither(f, f, rs[1]);
1443	>	checkIncomplete(h0);
1444	>	checkIncomplete(h1);
1445	>	assertTrue(f.complete(v1));
1446	>	final CompletableFuture<Integer> h2 = m.thenApply(f, rs[2]);
1447	>	final CompletableFuture<Integer> h3 = m.applyToEither(f, f, rs[3]);
1448	>
1449	>	checkCompletedNormally(h0, inc(v1));
1450	>	checkCompletedNormally(h1, inc(v1));
1451	>	checkCompletedNormally(h2, inc(v1));
1452	>	checkCompletedNormally(h3, inc(v1));
1453		checkCompletedNormally(f, v1);
1454	<	r.assertValue(inc(v1));
1454	>	for (IncFunction r : rs) r.assertValue(inc(v1));
1455		}}
1456
1457		/**
#	Line 1375 | Line 1460 | public class CompletableFutureTest exten
1460		*/
1461		public void testThenApply_exceptionalCompletion() {
1462		for (ExecutionMode m : ExecutionMode.values())
1378	–	for (boolean createIncomplete : new boolean[] { true, false })
1463		{
1464		final CFException ex = new CFException();
1465		final CompletableFuture<Integer> f = new CompletableFuture<>();
1466	<	final IncFunction r = new IncFunction(m);
1467	<	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	<	}
1466	>	final IncFunction[] rs = new IncFunction[4];
1467	>	for (int i = 0; i < rs.length; i++) rs[i] = new IncFunction(m);
1468
1469	<	checkCompletedWithWrappedException(g, ex);
1469	>	final CompletableFuture<Integer> h0 = m.thenApply(f, rs[0]);
1470	>	final CompletableFuture<Integer> h1 = m.applyToEither(f, f, rs[1]);
1471	>	assertTrue(f.completeExceptionally(ex));
1472	>	final CompletableFuture<Integer> h2 = m.thenApply(f, rs[2]);
1473	>	final CompletableFuture<Integer> h3 = m.applyToEither(f, f, rs[3]);
1474	>
1475	>	checkCompletedWithWrappedException(h0, ex);
1476	>	checkCompletedWithWrappedException(h1, ex);
1477	>	checkCompletedWithWrappedException(h2, ex);
1478	>	checkCompletedWithWrappedException(h3, ex);
1479		checkCompletedExceptionally(f, ex);
1480	<	r.assertNotInvoked();
1480	>	for (IncFunction r : rs) r.assertNotInvoked();
1481		}}
1482
1483		/**
#	Line 1397 | Line 1485 | public class CompletableFutureTest exten
1485		*/
1486		public void testThenApply_sourceCancelled() {
1487		for (ExecutionMode m : ExecutionMode.values())
1400	–	for (boolean createIncomplete : new boolean[] { true, false })
1488		for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1489		{
1490		final CompletableFuture<Integer> f = new CompletableFuture<>();
1491	<	final IncFunction r = new IncFunction(m);
1492	<	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	<	}
1491	>	final IncFunction[] rs = new IncFunction[4];
1492	>	for (int i = 0; i < rs.length; i++) rs[i] = new IncFunction(m);
1493
1494	<	checkCompletedWithWrappedCancellationException(g);
1494	>	final CompletableFuture<Integer> h0 = m.thenApply(f, rs[0]);
1495	>	final CompletableFuture<Integer> h1 = m.applyToEither(f, f, rs[1]);
1496	>	assertTrue(f.cancel(mayInterruptIfRunning));
1497	>	final CompletableFuture<Integer> h2 = m.thenApply(f, rs[2]);
1498	>	final CompletableFuture<Integer> h3 = m.applyToEither(f, f, rs[3]);
1499	>
1500	>	checkCompletedWithWrappedCancellationException(h0);
1501	>	checkCompletedWithWrappedCancellationException(h1);
1502	>	checkCompletedWithWrappedCancellationException(h2);
1503	>	checkCompletedWithWrappedCancellationException(h3);
1504		checkCancelled(f);
1505	<	r.assertNotInvoked();
1505	>	for (IncFunction r : rs) r.assertNotInvoked();
1506		}}
1507
1508		/**
#	Line 1419 | Line 1510 | public class CompletableFutureTest exten
1510		*/
1511		public void testThenApply_actionFailed() {
1512		for (ExecutionMode m : ExecutionMode.values())
1422	–	for (boolean createIncomplete : new boolean[] { true, false })
1513		for (Integer v1 : new Integer[] { 1, null })
1514		{
1515		final CompletableFuture<Integer> f = new CompletableFuture<>();
1516	<	final FailingFunction r = new FailingFunction(m);
1517	<	if (!createIncomplete) assertTrue(f.complete(v1));
1518	<	final CompletableFuture<Integer> g = m.thenApply(f, r);
1519	<	if (createIncomplete) {
1520	<	checkIncomplete(g);
1521	<	assertTrue(f.complete(v1));
1522	<	}
1516	>	final FailingFunction[] rs = new FailingFunction[4];
1517	>	for (int i = 0; i < rs.length; i++) rs[i] = new FailingFunction(m);
1518	>
1519	>	final CompletableFuture<Integer> h0 = m.thenApply(f, rs[0]);
1520	>	final CompletableFuture<Integer> h1 = m.applyToEither(f, f, rs[1]);
1521	>	assertTrue(f.complete(v1));
1522	>	final CompletableFuture<Integer> h2 = m.thenApply(f, rs[2]);
1523	>	final CompletableFuture<Integer> h3 = m.applyToEither(f, f, rs[3]);
1524
1525	<	checkCompletedWithWrappedCFException(g);
1525	>	checkCompletedWithWrappedException(h0, rs[0].ex);
1526	>	checkCompletedWithWrappedException(h1, rs[1].ex);
1527	>	checkCompletedWithWrappedException(h2, rs[2].ex);
1528	>	checkCompletedWithWrappedException(h3, rs[3].ex);
1529		checkCompletedNormally(f, v1);
1530		}}
1531
#	Line 1440 | Line 1534 | public class CompletableFutureTest exten
1534		*/
1535		public void testThenAccept_normalCompletion() {
1536		for (ExecutionMode m : ExecutionMode.values())
1443	–	for (boolean createIncomplete : new boolean[] { true, false })
1537		for (Integer v1 : new Integer[] { 1, null })
1538		{
1539		final CompletableFuture<Integer> f = new CompletableFuture<>();
1540	<	final NoopConsumer r = new NoopConsumer(m);
1541	<	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	<	}
1540	>	final NoopConsumer[] rs = new NoopConsumer[4];
1541	>	for (int i = 0; i < rs.length; i++) rs[i] = new NoopConsumer(m);
1542
1543	<	checkCompletedNormally(g, null);
1544	<	r.assertValue(v1);
1543	>	final CompletableFuture<Void> h0 = m.thenAccept(f, rs[0]);
1544	>	final CompletableFuture<Void> h1 = m.acceptEither(f, f, rs[1]);
1545	>	checkIncomplete(h0);
1546	>	checkIncomplete(h1);
1547	>	assertTrue(f.complete(v1));
1548	>	final CompletableFuture<Void> h2 = m.thenAccept(f, rs[2]);
1549	>	final CompletableFuture<Void> h3 = m.acceptEither(f, f, rs[3]);
1550	>
1551	>	checkCompletedNormally(h0, null);
1552	>	checkCompletedNormally(h1, null);
1553	>	checkCompletedNormally(h2, null);
1554	>	checkCompletedNormally(h3, null);
1555		checkCompletedNormally(f, v1);
1556	+	for (NoopConsumer r : rs) r.assertValue(v1);
1557		}}
1558
1559		/**
#	Line 1463 | Line 1562 | public class CompletableFutureTest exten
1562		*/
1563		public void testThenAccept_exceptionalCompletion() {
1564		for (ExecutionMode m : ExecutionMode.values())
1466	–	for (boolean createIncomplete : new boolean[] { true, false })
1565		{
1566		final CFException ex = new CFException();
1567		final CompletableFuture<Integer> f = new CompletableFuture<>();
1568	<	final NoopConsumer r = new NoopConsumer(m);
1569	<	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	<	}
1568	>	final NoopConsumer[] rs = new NoopConsumer[4];
1569	>	for (int i = 0; i < rs.length; i++) rs[i] = new NoopConsumer(m);
1570
1571	<	checkCompletedWithWrappedException(g, ex);
1571	>	final CompletableFuture<Void> h0 = m.thenAccept(f, rs[0]);
1572	>	final CompletableFuture<Void> h1 = m.acceptEither(f, f, rs[1]);
1573	>	assertTrue(f.completeExceptionally(ex));
1574	>	final CompletableFuture<Void> h2 = m.thenAccept(f, rs[2]);
1575	>	final CompletableFuture<Void> h3 = m.acceptEither(f, f, rs[3]);
1576	>
1577	>	checkCompletedWithWrappedException(h0, ex);
1578	>	checkCompletedWithWrappedException(h1, ex);
1579	>	checkCompletedWithWrappedException(h2, ex);
1580	>	checkCompletedWithWrappedException(h3, ex);
1581		checkCompletedExceptionally(f, ex);
1582	<	r.assertNotInvoked();
1582	>	for (NoopConsumer r : rs) r.assertNotInvoked();
1583		}}
1584
1585		/**
#	Line 1485 | Line 1587 | public class CompletableFutureTest exten
1587		*/
1588		public void testThenAccept_sourceCancelled() {
1589		for (ExecutionMode m : ExecutionMode.values())
1488	–	for (boolean createIncomplete : new boolean[] { true, false })
1590		for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1591		{
1592		final CompletableFuture<Integer> f = new CompletableFuture<>();
1593	<	final NoopConsumer r = new NoopConsumer(m);
1594	<	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	<	}
1593	>	final NoopConsumer[] rs = new NoopConsumer[4];
1594	>	for (int i = 0; i < rs.length; i++) rs[i] = new NoopConsumer(m);
1595
1596	<	checkCompletedWithWrappedCancellationException(g);
1596	>	final CompletableFuture<Void> h0 = m.thenAccept(f, rs[0]);
1597	>	final CompletableFuture<Void> h1 = m.acceptEither(f, f, rs[1]);
1598	>	assertTrue(f.cancel(mayInterruptIfRunning));
1599	>	final CompletableFuture<Void> h2 = m.thenAccept(f, rs[2]);
1600	>	final CompletableFuture<Void> h3 = m.acceptEither(f, f, rs[3]);
1601	>
1602	>	checkCompletedWithWrappedCancellationException(h0);
1603	>	checkCompletedWithWrappedCancellationException(h1);
1604	>	checkCompletedWithWrappedCancellationException(h2);
1605	>	checkCompletedWithWrappedCancellationException(h3);
1606		checkCancelled(f);
1607	<	r.assertNotInvoked();
1607	>	for (NoopConsumer r : rs) r.assertNotInvoked();
1608		}}
1609
1610		/**
#	Line 1507 | Line 1612 | public class CompletableFutureTest exten
1612		*/
1613		public void testThenAccept_actionFailed() {
1614		for (ExecutionMode m : ExecutionMode.values())
1510	–	for (boolean createIncomplete : new boolean[] { true, false })
1615		for (Integer v1 : new Integer[] { 1, null })
1616		{
1617		final CompletableFuture<Integer> f = new CompletableFuture<>();
1618	<	final FailingConsumer r = new FailingConsumer(m);
1619	<	if (!createIncomplete) f.complete(v1);
1620	<	final CompletableFuture<Void> g = m.thenAccept(f, r);
1621	<	if (createIncomplete) {
1622	<	checkIncomplete(g);
1623	<	f.complete(v1);
1624	<	}
1618	>	final FailingConsumer[] rs = new FailingConsumer[4];
1619	>	for (int i = 0; i < rs.length; i++) rs[i] = new FailingConsumer(m);
1620	>
1621	>	final CompletableFuture<Void> h0 = m.thenAccept(f, rs[0]);
1622	>	final CompletableFuture<Void> h1 = m.acceptEither(f, f, rs[1]);
1623	>	assertTrue(f.complete(v1));
1624	>	final CompletableFuture<Void> h2 = m.thenAccept(f, rs[2]);
1625	>	final CompletableFuture<Void> h3 = m.acceptEither(f, f, rs[3]);
1626
1627	<	checkCompletedWithWrappedCFException(g);
1627	>	checkCompletedWithWrappedException(h0, rs[0].ex);
1628	>	checkCompletedWithWrappedException(h1, rs[1].ex);
1629	>	checkCompletedWithWrappedException(h2, rs[2].ex);
1630	>	checkCompletedWithWrappedException(h3, rs[3].ex);
1631		checkCompletedNormally(f, v1);
1632		}}
1633
#	Line 1535 | Line 1643 | public class CompletableFutureTest exten
1643		{
1644		final CompletableFuture<Integer> f = new CompletableFuture<>();
1645		final CompletableFuture<Integer> g = new CompletableFuture<>();
1646	<	final SubtractFunction r1 = new SubtractFunction(m);
1647	<	final SubtractFunction r2 = new SubtractFunction(m);
1540	<	final SubtractFunction r3 = new SubtractFunction(m);
1646	>	final SubtractFunction[] rs = new SubtractFunction[6];
1647	>	for (int i = 0; i < rs.length; i++) rs[i] = new SubtractFunction(m);
1648
1649		final CompletableFuture<Integer> fst =  fFirst ? f : g;
1650		final CompletableFuture<Integer> snd = !fFirst ? f : g;
1651		final Integer w1 =  fFirst ? v1 : v2;
1652		final Integer w2 = !fFirst ? v1 : v2;
1653
1654	<	final CompletableFuture<Integer> h1 = m.thenCombine(f, g, r1);
1654	>	final CompletableFuture<Integer> h0 = m.thenCombine(f, g, rs[0]);
1655	>	final CompletableFuture<Integer> h1 = m.thenCombine(fst, fst, rs[1]);
1656		assertTrue(fst.complete(w1));
1657	<	final CompletableFuture<Integer> h2 = m.thenCombine(f, g, r2);
1658	<	checkIncomplete(h1);
1659	<	checkIncomplete(h2);
1660	<	r1.assertNotInvoked();
1661	<	r2.assertNotInvoked();
1657	>	final CompletableFuture<Integer> h2 = m.thenCombine(f, g, rs[2]);
1658	>	final CompletableFuture<Integer> h3 = m.thenCombine(fst, fst, rs[3]);
1659	>	checkIncomplete(h0); rs[0].assertNotInvoked();
1660	>	checkIncomplete(h2); rs[2].assertNotInvoked();
1661	>	checkCompletedNormally(h1, subtract(w1, w1));
1662	>	checkCompletedNormally(h3, subtract(w1, w1));
1663	>	rs[1].assertValue(subtract(w1, w1));
1664	>	rs[3].assertValue(subtract(w1, w1));
1665		assertTrue(snd.complete(w2));
1666	<	final CompletableFuture<Integer> h3 = m.thenCombine(f, g, r3);
1666	>	final CompletableFuture<Integer> h4 = m.thenCombine(f, g, rs[4]);
1667
1668	<	checkCompletedNormally(h1, subtract(v1, v2));
1668	>	checkCompletedNormally(h0, subtract(v1, v2));
1669		checkCompletedNormally(h2, subtract(v1, v2));
1670	<	checkCompletedNormally(h3, subtract(v1, v2));
1671	<	r1.assertValue(subtract(v1, v2));
1672	<	r2.assertValue(subtract(v1, v2));
1673	<	r3.assertValue(subtract(v1, v2));
1670	>	checkCompletedNormally(h4, subtract(v1, v2));
1671	>	rs[0].assertValue(subtract(v1, v2));
1672	>	rs[2].assertValue(subtract(v1, v2));
1673	>	rs[4].assertValue(subtract(v1, v2));
1674	>
1675		checkCompletedNormally(f, v1);
1676		checkCompletedNormally(g, v2);
1677		}}
#	Line 1677 | Line 1789 | public class CompletableFutureTest exten
1789		assertTrue(snd.complete(w2));
1790		final CompletableFuture<Integer> h3 = m.thenCombine(f, g, r3);
1791
1792	<	checkCompletedWithWrappedCFException(h1);
1793	<	checkCompletedWithWrappedCFException(h2);
1794	<	checkCompletedWithWrappedCFException(h3);
1792	>	checkCompletedWithWrappedException(h1, r1.ex);
1793	>	checkCompletedWithWrappedException(h2, r2.ex);
1794	>	checkCompletedWithWrappedException(h3, r3.ex);
1795		r1.assertInvoked();
1796		r2.assertInvoked();
1797		r3.assertInvoked();
#	Line 1841 | Line 1953 | public class CompletableFutureTest exten
1953		assertTrue(snd.complete(w2));
1954		final CompletableFuture<Void> h3 = m.thenAcceptBoth(f, g, r3);
1955
1956	<	checkCompletedWithWrappedCFException(h1);
1957	<	checkCompletedWithWrappedCFException(h2);
1958	<	checkCompletedWithWrappedCFException(h3);
1956	>	checkCompletedWithWrappedException(h1, r1.ex);
1957	>	checkCompletedWithWrappedException(h2, r2.ex);
1958	>	checkCompletedWithWrappedException(h3, r3.ex);
1959		r1.assertInvoked();
1960		r2.assertInvoked();
1961		r3.assertInvoked();
#	Line 2005 | Line 2117 | public class CompletableFutureTest exten
2117		assertTrue(snd.complete(w2));
2118		final CompletableFuture<Void> h3 = m.runAfterBoth(f, g, r3);
2119
2120	<	checkCompletedWithWrappedCFException(h1);
2121	<	checkCompletedWithWrappedCFException(h2);
2122	<	checkCompletedWithWrappedCFException(h3);
2120	>	checkCompletedWithWrappedException(h1, r1.ex);
2121	>	checkCompletedWithWrappedException(h2, r2.ex);
2122	>	checkCompletedWithWrappedException(h3, r3.ex);
2123		r1.assertInvoked();
2124		r2.assertInvoked();
2125		r3.assertInvoked();
#	Line 2297 | Line 2409 | public class CompletableFutureTest exten
2409		f.complete(v1);
2410		final CompletableFuture<Integer> h2 = m.applyToEither(f, g, rs[2]);
2411		final CompletableFuture<Integer> h3 = m.applyToEither(g, f, rs[3]);
2412	<	checkCompletedWithWrappedCFException(h0);
2413	<	checkCompletedWithWrappedCFException(h1);
2414	<	checkCompletedWithWrappedCFException(h2);
2415	<	checkCompletedWithWrappedCFException(h3);
2412	>	checkCompletedWithWrappedException(h0, rs[0].ex);
2413	>	checkCompletedWithWrappedException(h1, rs[1].ex);
2414	>	checkCompletedWithWrappedException(h2, rs[2].ex);
2415	>	checkCompletedWithWrappedException(h3, rs[3].ex);
2416		for (int i = 0; i < 4; i++) rs[i].assertValue(v1);
2417
2418		g.complete(v2);
#	Line 2309 | Line 2421 | public class CompletableFutureTest exten
2421		final CompletableFuture<Integer> h4 = m.applyToEither(f, g, rs[4]);
2422		final CompletableFuture<Integer> h5 = m.applyToEither(g, f, rs[5]);
2423
2424	<	checkCompletedWithWrappedCFException(h4);
2424	>	checkCompletedWithWrappedException(h4, rs[4].ex);
2425		assertTrue(Objects.equals(v1, rs[4].value) ||
2426		Objects.equals(v2, rs[4].value));
2427	<	checkCompletedWithWrappedCFException(h5);
2427	>	checkCompletedWithWrappedException(h5, rs[5].ex);
2428		assertTrue(Objects.equals(v1, rs[5].value) ||
2429		Objects.equals(v2, rs[5].value));
2430
#	Line 2556 | Line 2668 | public class CompletableFutureTest exten
2668		f.complete(v1);
2669		final CompletableFuture<Void> h2 = m.acceptEither(f, g, rs[2]);
2670		final CompletableFuture<Void> h3 = m.acceptEither(g, f, rs[3]);
2671	<	checkCompletedWithWrappedCFException(h0);
2672	<	checkCompletedWithWrappedCFException(h1);
2673	<	checkCompletedWithWrappedCFException(h2);
2674	<	checkCompletedWithWrappedCFException(h3);
2671	>	checkCompletedWithWrappedException(h0, rs[0].ex);
2672	>	checkCompletedWithWrappedException(h1, rs[1].ex);
2673	>	checkCompletedWithWrappedException(h2, rs[2].ex);
2674	>	checkCompletedWithWrappedException(h3, rs[3].ex);
2675		for (int i = 0; i < 4; i++) rs[i].assertValue(v1);
2676
2677		g.complete(v2);
#	Line 2568 | Line 2680 | public class CompletableFutureTest exten
2680		final CompletableFuture<Void> h4 = m.acceptEither(f, g, rs[4]);
2681		final CompletableFuture<Void> h5 = m.acceptEither(g, f, rs[5]);
2682
2683	<	checkCompletedWithWrappedCFException(h4);
2683	>	checkCompletedWithWrappedException(h4, rs[4].ex);
2684		assertTrue(Objects.equals(v1, rs[4].value) ||
2685		Objects.equals(v2, rs[4].value));
2686	<	checkCompletedWithWrappedCFException(h5);
2686	>	checkCompletedWithWrappedException(h5, rs[5].ex);
2687		assertTrue(Objects.equals(v1, rs[5].value) ||
2688		Objects.equals(v2, rs[5].value));
2689
#	Line 2587 | Line 2699 | public class CompletableFutureTest exten
2699		for (ExecutionMode m : ExecutionMode.values())
2700		for (Integer v1 : new Integer[] { 1, null })
2701		for (Integer v2 : new Integer[] { 2, null })
2702	+	for (boolean pushNop : new boolean[] { true, false })
2703		{
2704		final CompletableFuture<Integer> f = new CompletableFuture<>();
2705		final CompletableFuture<Integer> g = new CompletableFuture<>();
#	Line 2599 | Line 2712 | public class CompletableFutureTest exten
2712		checkIncomplete(h1);
2713		rs[0].assertNotInvoked();
2714		rs[1].assertNotInvoked();
2715	+	if (pushNop) {          // ad hoc test of intra-completion interference
2716	+	m.thenRun(f, () -> {});
2717	+	m.thenRun(g, () -> {});
2718	+	}
2719		f.complete(v1);
2720		checkCompletedNormally(h0, null);
2721		checkCompletedNormally(h1, null);
#	Line 2811 | Line 2928 | public class CompletableFutureTest exten
2928		assertTrue(f.complete(v1));
2929		final CompletableFuture<Void> h2 = m.runAfterEither(f, g, rs[2]);
2930		final CompletableFuture<Void> h3 = m.runAfterEither(g, f, rs[3]);
2931	<	checkCompletedWithWrappedCFException(h0);
2932	<	checkCompletedWithWrappedCFException(h1);
2933	<	checkCompletedWithWrappedCFException(h2);
2934	<	checkCompletedWithWrappedCFException(h3);
2931	>	checkCompletedWithWrappedException(h0, rs[0].ex);
2932	>	checkCompletedWithWrappedException(h1, rs[1].ex);
2933	>	checkCompletedWithWrappedException(h2, rs[2].ex);
2934	>	checkCompletedWithWrappedException(h3, rs[3].ex);
2935		for (int i = 0; i < 4; i++) rs[i].assertInvoked();
2936		assertTrue(g.complete(v2));
2937		final CompletableFuture<Void> h4 = m.runAfterEither(f, g, rs[4]);
2938		final CompletableFuture<Void> h5 = m.runAfterEither(g, f, rs[5]);
2939	<	checkCompletedWithWrappedCFException(h4);
2940	<	checkCompletedWithWrappedCFException(h5);
2939	>	checkCompletedWithWrappedException(h4, rs[4].ex);
2940	>	checkCompletedWithWrappedException(h5, rs[5].ex);
2941
2942		checkCompletedNormally(f, v1);
2943		checkCompletedNormally(g, v2);
#	Line 2881 | Line 2998 | public class CompletableFutureTest exten
2998		final CompletableFuture<Integer> g = m.thenCompose(f, r);
2999		if (createIncomplete) assertTrue(f.complete(v1));
3000
3001	<	checkCompletedWithWrappedCFException(g);
3001	>	checkCompletedWithWrappedException(g, r.ex);
3002		checkCompletedNormally(f, v1);
3003		}}
3004
#	Line 2906 | Line 3023 | public class CompletableFutureTest exten
3023		checkCancelled(f);
3024		}}
3025
3026	+	/**
3027	+	* thenCompose result completes exceptionally if the result of the action does
3028	+	*/
3029	+	public void testThenCompose_actionReturnsFailingFuture() {
3030	+	for (ExecutionMode m : ExecutionMode.values())
3031	+	for (int order = 0; order < 6; order++)
3032	+	for (Integer v1 : new Integer[] { 1, null })
3033	+	{
3034	+	final CFException ex = new CFException();
3035	+	final CompletableFuture<Integer> f = new CompletableFuture<>();
3036	+	final CompletableFuture<Integer> g = new CompletableFuture<>();
3037	+	final CompletableFuture<Integer> h;
3038	+	// Test all permutations of orders
3039	+	switch (order) {
3040	+	case 0:
3041	+	assertTrue(f.complete(v1));
3042	+	assertTrue(g.completeExceptionally(ex));
3043	+	h = m.thenCompose(f, (x -> g));
3044	+	break;
3045	+	case 1:
3046	+	assertTrue(f.complete(v1));
3047	+	h = m.thenCompose(f, (x -> g));
3048	+	assertTrue(g.completeExceptionally(ex));
3049	+	break;
3050	+	case 2:
3051	+	assertTrue(g.completeExceptionally(ex));
3052	+	assertTrue(f.complete(v1));
3053	+	h = m.thenCompose(f, (x -> g));
3054	+	break;
3055	+	case 3:
3056	+	assertTrue(g.completeExceptionally(ex));
3057	+	h = m.thenCompose(f, (x -> g));
3058	+	assertTrue(f.complete(v1));
3059	+	break;
3060	+	case 4:
3061	+	h = m.thenCompose(f, (x -> g));
3062	+	assertTrue(f.complete(v1));
3063	+	assertTrue(g.completeExceptionally(ex));
3064	+	break;
3065	+	case 5:
3066	+	h = m.thenCompose(f, (x -> g));
3067	+	assertTrue(f.complete(v1));
3068	+	assertTrue(g.completeExceptionally(ex));
3069	+	break;
3070	+	default: throw new AssertionError();
3071	+	}
3072	+
3073	+	checkCompletedExceptionally(g, ex);
3074	+	checkCompletedWithWrappedException(h, ex);
3075	+	checkCompletedNormally(f, v1);
3076	+	}}
3077	+
3078		// other static methods
3079
3080		/**
#	Line 2922 | Line 3091 | public class CompletableFutureTest exten
3091		* when all components complete normally
3092		*/
3093		public void testAllOf_normal() throws Exception {
3094	<	for (int k = 1; k < 20; ++k) {
3094	>	for (int k = 1; k < 10; k++) {
3095		CompletableFuture<Integer>[] fs
3096		= (CompletableFuture<Integer>[]) new CompletableFuture[k];
3097	<	for (int i = 0; i < k; ++i)
3097	>	for (int i = 0; i < k; i++)
3098		fs[i] = new CompletableFuture<>();
3099		CompletableFuture<Void> f = CompletableFuture.allOf(fs);
3100	<	for (int i = 0; i < k; ++i) {
3100	>	for (int i = 0; i < k; i++) {
3101		checkIncomplete(f);
3102		checkIncomplete(CompletableFuture.allOf(fs));
3103		fs[i].complete(one);
#	Line 2938 | Line 3107 | public class CompletableFutureTest exten
3107		}
3108		}
3109
3110	<	public void testAllOf_backwards() throws Exception {
3111	<	for (int k = 1; k < 20; ++k) {
3110	>	public void testAllOf_normal_backwards() throws Exception {
3111	>	for (int k = 1; k < 10; k++) {
3112		CompletableFuture<Integer>[] fs
3113		= (CompletableFuture<Integer>[]) new CompletableFuture[k];
3114	<	for (int i = 0; i < k; ++i)
3114	>	for (int i = 0; i < k; i++)
3115		fs[i] = new CompletableFuture<>();
3116		CompletableFuture<Void> f = CompletableFuture.allOf(fs);
3117		for (int i = k - 1; i >= 0; i--) {
#	Line 2955 | Line 3124 | public class CompletableFutureTest exten
3124		}
3125		}
3126
3127	+	public void testAllOf_exceptional() throws Exception {
3128	+	for (int k = 1; k < 10; k++) {
3129	+	CompletableFuture<Integer>[] fs
3130	+	= (CompletableFuture<Integer>[]) new CompletableFuture[k];
3131	+	CFException ex = new CFException();
3132	+	for (int i = 0; i < k; i++)
3133	+	fs[i] = new CompletableFuture<>();
3134	+	CompletableFuture<Void> f = CompletableFuture.allOf(fs);
3135	+	for (int i = 0; i < k; i++) {
3136	+	checkIncomplete(f);
3137	+	checkIncomplete(CompletableFuture.allOf(fs));
3138	+	if (i != k / 2) {
3139	+	fs[i].complete(i);
3140	+	checkCompletedNormally(fs[i], i);
3141	+	} else {
3142	+	fs[i].completeExceptionally(ex);
3143	+	checkCompletedExceptionally(fs[i], ex);
3144	+	}
3145	+	}
3146	+	checkCompletedWithWrappedException(f, ex);
3147	+	checkCompletedWithWrappedException(CompletableFuture.allOf(fs), ex);
3148	+	}
3149	+	}
3150	+
3151		/**
3152		* anyOf(no component futures) returns an incomplete future
3153		*/
3154		public void testAnyOf_empty() throws Exception {
3155	+	for (Integer v1 : new Integer[] { 1, null })
3156	+	{
3157		CompletableFuture<Object> f = CompletableFuture.anyOf();
3158		checkIncomplete(f);
3159	<	}
3159	>
3160	>	f.complete(v1);
3161	>	checkCompletedNormally(f, v1);
3162	>	}}
3163
3164		/**
3165		* anyOf returns a future completed normally with a value when
3166		* a component future does
3167		*/
3168		public void testAnyOf_normal() throws Exception {
3169	<	for (int k = 0; k < 10; ++k) {
3169	>	for (int k = 0; k < 10; k++) {
3170		CompletableFuture[] fs = new CompletableFuture[k];
3171	<	for (int i = 0; i < k; ++i)
3171	>	for (int i = 0; i < k; i++)
3172		fs[i] = new CompletableFuture<>();
3173		CompletableFuture<Object> f = CompletableFuture.anyOf(fs);
3174		checkIncomplete(f);
3175	<	for (int i = 0; i < k; ++i) {
3176	<	fs[i].complete(one);
3177	<	checkCompletedNormally(f, one);
3178	<	checkCompletedNormally(CompletableFuture.anyOf(fs), one);
3175	>	for (int i = 0; i < k; i++) {
3176	>	fs[i].complete(i);
3177	>	checkCompletedNormally(f, 0);
3178	>	int x = (int) CompletableFuture.anyOf(fs).join();
3179	>	assertTrue(0 <= x && x <= i);
3180	>	}
3181	>	}
3182	>	}
3183	>	public void testAnyOf_normal_backwards() throws Exception {
3184	>	for (int k = 0; k < 10; k++) {
3185	>	CompletableFuture[] fs = new CompletableFuture[k];
3186	>	for (int i = 0; i < k; i++)
3187	>	fs[i] = new CompletableFuture<>();
3188	>	CompletableFuture<Object> f = CompletableFuture.anyOf(fs);
3189	>	checkIncomplete(f);
3190	>	for (int i = k - 1; i >= 0; i--) {
3191	>	fs[i].complete(i);
3192	>	checkCompletedNormally(f, k - 1);
3193	>	int x = (int) CompletableFuture.anyOf(fs).join();
3194	>	assertTrue(i <= x && x <= k - 1);
3195		}
3196		}
3197		}
#	Line 2986 | Line 3200 | public class CompletableFutureTest exten
3200		* anyOf result completes exceptionally when any component does.
3201		*/
3202		public void testAnyOf_exceptional() throws Exception {
3203	<	for (int k = 0; k < 10; ++k) {
3203	>	for (int k = 0; k < 10; k++) {
3204	>	CompletableFuture[] fs = new CompletableFuture[k];
3205	>	CFException[] exs = new CFException[k];
3206	>	for (int i = 0; i < k; i++) {
3207	>	fs[i] = new CompletableFuture<>();
3208	>	exs[i] = new CFException();
3209	>	}
3210	>	CompletableFuture<Object> f = CompletableFuture.anyOf(fs);
3211	>	checkIncomplete(f);
3212	>	for (int i = 0; i < k; i++) {
3213	>	fs[i].completeExceptionally(exs[i]);
3214	>	checkCompletedWithWrappedException(f, exs[0]);
3215	>	checkCompletedWithWrappedCFException(CompletableFuture.anyOf(fs));
3216	>	}
3217	>	}
3218	>	}
3219	>
3220	>	public void testAnyOf_exceptional_backwards() throws Exception {
3221	>	for (int k = 0; k < 10; k++) {
3222		CompletableFuture[] fs = new CompletableFuture[k];
3223	<	for (int i = 0; i < k; ++i)
3223	>	CFException[] exs = new CFException[k];
3224	>	for (int i = 0; i < k; i++) {
3225		fs[i] = new CompletableFuture<>();
3226	+	exs[i] = new CFException();
3227	+	}
3228		CompletableFuture<Object> f = CompletableFuture.anyOf(fs);
3229		checkIncomplete(f);
3230	<	for (int i = 0; i < k; ++i) {
3231	<	fs[i].completeExceptionally(new CFException());
3232	<	checkCompletedWithWrappedCFException(f);
3230	>	for (int i = k - 1; i >= 0; i--) {
3231	>	fs[i].completeExceptionally(exs[i]);
3232	>	checkCompletedWithWrappedException(f, exs[k - 1]);
3233		checkCompletedWithWrappedCFException(CompletableFuture.anyOf(fs));
3234		}
3235		}
#	Line 3007 | Line 3242 | public class CompletableFutureTest exten
3242		CompletableFuture<Integer> f = new CompletableFuture<>();
3243		CompletableFuture<Integer> g = new CompletableFuture<>();
3244		CompletableFuture<Integer> nullFuture = (CompletableFuture<Integer>)null;
3010	–	CompletableFuture<?> h;
3245		ThreadExecutor exec = new ThreadExecutor();
3246
3247		Runnable[] throwingActions = {
3248		() -> CompletableFuture.supplyAsync(null),
3249		() -> CompletableFuture.supplyAsync(null, exec),
3250	<	() -> CompletableFuture.supplyAsync(new IntegerSupplier(ExecutionMode.DEFAULT, 42), null),
3250	>	() -> CompletableFuture.supplyAsync(new IntegerSupplier(ExecutionMode.SYNC, 42), null),
3251
3252		() -> CompletableFuture.runAsync(null),
3253		() -> CompletableFuture.runAsync(null, exec),
#	Line 3104 | Line 3338 | public class CompletableFutureTest exten
3338		() -> CompletableFuture.anyOf(null, f),
3339
3340		() -> f.obtrudeException(null),
3341	+
3342	+	() -> CompletableFuture.delayedExecutor(1L, SECONDS, null),
3343	+	() -> CompletableFuture.delayedExecutor(1L, null, exec),
3344	+	() -> CompletableFuture.delayedExecutor(1L, null),
3345	+
3346	+	() -> f.orTimeout(1L, null),
3347	+	() -> f.completeOnTimeout(42, 1L, null),
3348	+
3349	+	() -> CompletableFuture.failedFuture(null),
3350	+	() -> CompletableFuture.failedStage(null),
3351		};
3352
3353		assertThrows(NullPointerException.class, throwingActions);
#	Line 3111 | Line 3355 | public class CompletableFutureTest exten
3355		}
3356
3357		/**
3358	+	* Test submissions to an executor that rejects all tasks.
3359	+	*/
3360	+	public void testRejectingExecutor() {
3361	+	for (Integer v : new Integer[] { 1, null })
3362	+	{
3363	+	final CountingRejectingExecutor e = new CountingRejectingExecutor();
3364	+
3365	+	final CompletableFuture<Integer> complete = CompletableFuture.completedFuture(v);
3366	+	final CompletableFuture<Integer> incomplete = new CompletableFuture<>();
3367	+
3368	+	List<CompletableFuture<?>> futures = new ArrayList<>();
3369	+
3370	+	List<CompletableFuture<Integer>> srcs = new ArrayList<>();
3371	+	srcs.add(complete);
3372	+	srcs.add(incomplete);
3373	+
3374	+	for (CompletableFuture<Integer> src : srcs) {
3375	+	List<CompletableFuture<?>> fs = new ArrayList<>();
3376	+	fs.add(src.thenRunAsync(() -> {}, e));
3377	+	fs.add(src.thenAcceptAsync((z) -> {}, e));
3378	+	fs.add(src.thenApplyAsync((z) -> z, e));
3379	+
3380	+	fs.add(src.thenCombineAsync(src, (x, y) -> x, e));
3381	+	fs.add(src.thenAcceptBothAsync(src, (x, y) -> {}, e));
3382	+	fs.add(src.runAfterBothAsync(src, () -> {}, e));
3383	+
3384	+	fs.add(src.applyToEitherAsync(src, (z) -> z, e));
3385	+	fs.add(src.acceptEitherAsync(src, (z) -> {}, e));
3386	+	fs.add(src.runAfterEitherAsync(src, () -> {}, e));
3387	+
3388	+	fs.add(src.thenComposeAsync((z) -> null, e));
3389	+	fs.add(src.whenCompleteAsync((z, t) -> {}, e));
3390	+	fs.add(src.handleAsync((z, t) -> null, e));
3391	+
3392	+	for (CompletableFuture<?> future : fs) {
3393	+	if (src.isDone())
3394	+	checkCompletedWithWrappedException(future, e.ex);
3395	+	else
3396	+	checkIncomplete(future);
3397	+	}
3398	+	futures.addAll(fs);
3399	+	}
3400	+
3401	+	{
3402	+	List<CompletableFuture<?>> fs = new ArrayList<>();
3403	+
3404	+	fs.add(complete.thenCombineAsync(incomplete, (x, y) -> x, e));
3405	+	fs.add(incomplete.thenCombineAsync(complete, (x, y) -> x, e));
3406	+
3407	+	fs.add(complete.thenAcceptBothAsync(incomplete, (x, y) -> {}, e));
3408	+	fs.add(incomplete.thenAcceptBothAsync(complete, (x, y) -> {}, e));
3409	+
3410	+	fs.add(complete.runAfterBothAsync(incomplete, () -> {}, e));
3411	+	fs.add(incomplete.runAfterBothAsync(complete, () -> {}, e));
3412	+
3413	+	for (CompletableFuture<?> future : fs)
3414	+	checkIncomplete(future);
3415	+	futures.addAll(fs);
3416	+	}
3417	+
3418	+	{
3419	+	List<CompletableFuture<?>> fs = new ArrayList<>();
3420	+
3421	+	fs.add(complete.applyToEitherAsync(incomplete, (z) -> z, e));
3422	+	fs.add(incomplete.applyToEitherAsync(complete, (z) -> z, e));
3423	+
3424	+	fs.add(complete.acceptEitherAsync(incomplete, (z) -> {}, e));
3425	+	fs.add(incomplete.acceptEitherAsync(complete, (z) -> {}, e));
3426	+
3427	+	fs.add(complete.runAfterEitherAsync(incomplete, () -> {}, e));
3428	+	fs.add(incomplete.runAfterEitherAsync(complete, () -> {}, e));
3429	+
3430	+	for (CompletableFuture<?> future : fs)
3431	+	checkCompletedWithWrappedException(future, e.ex);
3432	+	futures.addAll(fs);
3433	+	}
3434	+
3435	+	incomplete.complete(v);
3436	+
3437	+	for (CompletableFuture<?> future : futures)
3438	+	checkCompletedWithWrappedException(future, e.ex);
3439	+
3440	+	assertEquals(futures.size(), e.count.get());
3441	+	}}
3442	+
3443	+	/**
3444	+	* Test submissions to an executor that rejects all tasks, but
3445	+	* should never be invoked because the dependent future is
3446	+	* explicitly completed.
3447	+	*/
3448	+	public void testRejectingExecutorNeverInvoked() {
3449	+	for (Integer v : new Integer[] { 1, null })
3450	+	{
3451	+	final CountingRejectingExecutor e = new CountingRejectingExecutor();
3452	+
3453	+	final CompletableFuture<Integer> complete = CompletableFuture.completedFuture(v);
3454	+	final CompletableFuture<Integer> incomplete = new CompletableFuture<>();
3455	+
3456	+	List<CompletableFuture<?>> futures = new ArrayList<>();
3457	+
3458	+	List<CompletableFuture<Integer>> srcs = new ArrayList<>();
3459	+	srcs.add(complete);
3460	+	srcs.add(incomplete);
3461	+
3462	+	List<CompletableFuture<?>> fs = new ArrayList<>();
3463	+	fs.add(incomplete.thenRunAsync(() -> {}, e));
3464	+	fs.add(incomplete.thenAcceptAsync((z) -> {}, e));
3465	+	fs.add(incomplete.thenApplyAsync((z) -> z, e));
3466	+
3467	+	fs.add(incomplete.thenCombineAsync(incomplete, (x, y) -> x, e));
3468	+	fs.add(incomplete.thenAcceptBothAsync(incomplete, (x, y) -> {}, e));
3469	+	fs.add(incomplete.runAfterBothAsync(incomplete, () -> {}, e));
3470	+
3471	+	fs.add(incomplete.applyToEitherAsync(incomplete, (z) -> z, e));
3472	+	fs.add(incomplete.acceptEitherAsync(incomplete, (z) -> {}, e));
3473	+	fs.add(incomplete.runAfterEitherAsync(incomplete, () -> {}, e));
3474	+
3475	+	fs.add(incomplete.thenComposeAsync((z) -> null, e));
3476	+	fs.add(incomplete.whenCompleteAsync((z, t) -> {}, e));
3477	+	fs.add(incomplete.handleAsync((z, t) -> null, e));
3478	+
3479	+	fs.add(complete.thenCombineAsync(incomplete, (x, y) -> x, e));
3480	+	fs.add(incomplete.thenCombineAsync(complete, (x, y) -> x, e));
3481	+
3482	+	fs.add(complete.thenAcceptBothAsync(incomplete, (x, y) -> {}, e));
3483	+	fs.add(incomplete.thenAcceptBothAsync(complete, (x, y) -> {}, e));
3484	+
3485	+	fs.add(complete.runAfterBothAsync(incomplete, () -> {}, e));
3486	+	fs.add(incomplete.runAfterBothAsync(complete, () -> {}, e));
3487	+
3488	+	for (CompletableFuture<?> future : fs)
3489	+	checkIncomplete(future);
3490	+
3491	+	for (CompletableFuture<?> future : fs)
3492	+	future.complete(null);
3493	+
3494	+	incomplete.complete(v);
3495	+
3496	+	for (CompletableFuture<?> future : fs)
3497	+	checkCompletedNormally(future, null);
3498	+
3499	+	assertEquals(0, e.count.get());
3500	+	}}
3501	+
3502	+	/**
3503		* toCompletableFuture returns this CompletableFuture.
3504		*/
3505		public void testToCompletableFuture() {
#	Line 3118 | Line 3507 | public class CompletableFutureTest exten
3507		assertSame(f, f.toCompletableFuture());
3508		}
3509
3510	+	// jdk9
3511	+
3512	+	/**
3513	+	* newIncompleteFuture returns an incomplete CompletableFuture
3514	+	*/
3515	+	public void testNewIncompleteFuture() {
3516	+	for (Integer v1 : new Integer[] { 1, null })
3517	+	{
3518	+	CompletableFuture<Integer> f = new CompletableFuture<>();
3519	+	CompletableFuture<Integer> g = f.newIncompleteFuture();
3520	+	checkIncomplete(f);
3521	+	checkIncomplete(g);
3522	+	f.complete(v1);
3523	+	checkCompletedNormally(f, v1);
3524	+	checkIncomplete(g);
3525	+	g.complete(v1);
3526	+	checkCompletedNormally(g, v1);
3527	+	assertSame(g.getClass(), CompletableFuture.class);
3528	+	}}
3529	+
3530	+	/**
3531	+	* completedStage returns a completed CompletionStage
3532	+	*/
3533	+	public void testCompletedStage() {
3534	+	AtomicInteger x = new AtomicInteger(0);
3535	+	AtomicReference<Throwable> r = new AtomicReference<Throwable>();
3536	+	CompletionStage<Integer> f = CompletableFuture.completedStage(1);
3537	+	f.whenComplete((v, e) -> {if (e != null) r.set(e); else x.set(v);});
3538	+	assertEquals(x.get(), 1);
3539	+	assertNull(r.get());
3540	+	}
3541	+
3542	+	/**
3543	+	* defaultExecutor by default returns the commonPool if
3544	+	* it supports more than one thread.
3545	+	*/
3546	+	public void testDefaultExecutor() {
3547	+	CompletableFuture<Integer> f = new CompletableFuture<>();
3548	+	Executor e = f.defaultExecutor();
3549	+	Executor c = ForkJoinPool.commonPool();
3550	+	if (ForkJoinPool.getCommonPoolParallelism() > 1)
3551	+	assertSame(e, c);
3552	+	else
3553	+	assertNotSame(e, c);
3554	+	}
3555	+
3556	+	/**
3557	+	* failedFuture returns a CompletableFuture completed
3558	+	* exceptionally with the given Exception
3559	+	*/
3560	+	public void testFailedFuture() {
3561	+	CFException ex = new CFException();
3562	+	CompletableFuture<Integer> f = CompletableFuture.failedFuture(ex);
3563	+	checkCompletedExceptionally(f, ex);
3564	+	}
3565	+
3566	+	/**
3567	+	* failedFuture(null) throws NPE
3568	+	*/
3569	+	public void testFailedFuture_null() {
3570	+	try {
3571	+	CompletableFuture<Integer> f = CompletableFuture.failedFuture(null);
3572	+	shouldThrow();
3573	+	} catch (NullPointerException success) {}
3574	+	}
3575	+
3576	+	/**
3577	+	* copy returns a CompletableFuture that is completed normally,
3578	+	* with the same value, when source is.
3579	+	*/
3580	+	public void testCopy_normalCompletion() {
3581	+	for (boolean createIncomplete : new boolean[] { true, false })
3582	+	for (Integer v1 : new Integer[] { 1, null })
3583	+	{
3584	+	CompletableFuture<Integer> f = new CompletableFuture<>();
3585	+	if (!createIncomplete) assertTrue(f.complete(v1));
3586	+	CompletableFuture<Integer> g = f.copy();
3587	+	if (createIncomplete) {
3588	+	checkIncomplete(f);
3589	+	checkIncomplete(g);
3590	+	assertTrue(f.complete(v1));
3591	+	}
3592	+	checkCompletedNormally(f, v1);
3593	+	checkCompletedNormally(g, v1);
3594	+	}}
3595	+
3596	+	/**
3597	+	* copy returns a CompletableFuture that is completed exceptionally
3598	+	* when source is.
3599	+	*/
3600	+	public void testCopy_exceptionalCompletion() {
3601	+	for (boolean createIncomplete : new boolean[] { true, false })
3602	+	{
3603	+	CFException ex = new CFException();
3604	+	CompletableFuture<Integer> f = new CompletableFuture<>();
3605	+	if (!createIncomplete) f.completeExceptionally(ex);
3606	+	CompletableFuture<Integer> g = f.copy();
3607	+	if (createIncomplete) {
3608	+	checkIncomplete(f);
3609	+	checkIncomplete(g);
3610	+	f.completeExceptionally(ex);
3611	+	}
3612	+	checkCompletedExceptionally(f, ex);
3613	+	checkCompletedWithWrappedException(g, ex);
3614	+	}}
3615	+
3616	+	/**
3617	+	* Completion of a copy does not complete its source.
3618	+	*/
3619	+	public void testCopy_oneWayPropagation() {
3620	+	CompletableFuture<Integer> f = new CompletableFuture<>();
3621	+	assertTrue(f.copy().complete(1));
3622	+	assertTrue(f.copy().complete(null));
3623	+	assertTrue(f.copy().cancel(true));
3624	+	assertTrue(f.copy().cancel(false));
3625	+	assertTrue(f.copy().completeExceptionally(new CFException()));
3626	+	checkIncomplete(f);
3627	+	}
3628	+
3629	+	/**
3630	+	* minimalCompletionStage returns a CompletableFuture that is
3631	+	* completed normally, with the same value, when source is.
3632	+	*/
3633	+	public void testMinimalCompletionStage() {
3634	+	CompletableFuture<Integer> f = new CompletableFuture<>();
3635	+	CompletionStage<Integer> g = f.minimalCompletionStage();
3636	+	AtomicInteger x = new AtomicInteger(0);
3637	+	AtomicReference<Throwable> r = new AtomicReference<Throwable>();
3638	+	checkIncomplete(f);
3639	+	g.whenComplete((v, e) -> {if (e != null) r.set(e); else x.set(v);});
3640	+	f.complete(1);
3641	+	checkCompletedNormally(f, 1);
3642	+	assertEquals(x.get(), 1);
3643	+	assertNull(r.get());
3644	+	}
3645	+
3646	+	/**
3647	+	* minimalCompletionStage returns a CompletableFuture that is
3648	+	* completed exceptionally when source is.
3649	+	*/
3650	+	public void testMinimalCompletionStage2() {
3651	+	CompletableFuture<Integer> f = new CompletableFuture<>();
3652	+	CompletionStage<Integer> g = f.minimalCompletionStage();
3653	+	AtomicInteger x = new AtomicInteger(0);
3654	+	AtomicReference<Throwable> r = new AtomicReference<Throwable>();
3655	+	g.whenComplete((v, e) -> {if (e != null) r.set(e); else x.set(v);});
3656	+	checkIncomplete(f);
3657	+	CFException ex = new CFException();
3658	+	f.completeExceptionally(ex);
3659	+	checkCompletedExceptionally(f, ex);
3660	+	assertEquals(x.get(), 0);
3661	+	assertEquals(r.get().getCause(), ex);
3662	+	}
3663	+
3664	+	/**
3665	+	* failedStage returns a CompletionStage completed
3666	+	* exceptionally with the given Exception
3667	+	*/
3668	+	public void testFailedStage() {
3669	+	CFException ex = new CFException();
3670	+	CompletionStage<Integer> f = CompletableFuture.failedStage(ex);
3671	+	AtomicInteger x = new AtomicInteger(0);
3672	+	AtomicReference<Throwable> r = new AtomicReference<Throwable>();
3673	+	f.whenComplete((v, e) -> {if (e != null) r.set(e); else x.set(v);});
3674	+	assertEquals(x.get(), 0);
3675	+	assertEquals(r.get(), ex);
3676	+	}
3677	+
3678	+	/**
3679	+	* completeAsync completes with value of given supplier
3680	+	*/
3681	+	public void testCompleteAsync() {
3682	+	for (Integer v1 : new Integer[] { 1, null })
3683	+	{
3684	+	CompletableFuture<Integer> f = new CompletableFuture<>();
3685	+	f.completeAsync(() -> v1);
3686	+	f.join();
3687	+	checkCompletedNormally(f, v1);
3688	+	}}
3689	+
3690	+	/**
3691	+	* completeAsync completes exceptionally if given supplier throws
3692	+	*/
3693	+	public void testCompleteAsync2() {
3694	+	CompletableFuture<Integer> f = new CompletableFuture<>();
3695	+	CFException ex = new CFException();
3696	+	f.completeAsync(() -> {if (true) throw ex; return 1;});
3697	+	try {
3698	+	f.join();
3699	+	shouldThrow();
3700	+	} catch (CompletionException success) {}
3701	+	checkCompletedWithWrappedException(f, ex);
3702	+	}
3703	+
3704	+	/**
3705	+	* completeAsync with given executor completes with value of given supplier
3706	+	*/
3707	+	public void testCompleteAsync3() {
3708	+	for (Integer v1 : new Integer[] { 1, null })
3709	+	{
3710	+	CompletableFuture<Integer> f = new CompletableFuture<>();
3711	+	ThreadExecutor executor = new ThreadExecutor();
3712	+	f.completeAsync(() -> v1, executor);
3713	+	assertSame(v1, f.join());
3714	+	checkCompletedNormally(f, v1);
3715	+	assertEquals(1, executor.count.get());
3716	+	}}
3717	+
3718	+	/**
3719	+	* completeAsync with given executor completes exceptionally if
3720	+	* given supplier throws
3721	+	*/
3722	+	public void testCompleteAsync4() {
3723	+	CompletableFuture<Integer> f = new CompletableFuture<>();
3724	+	CFException ex = new CFException();
3725	+	ThreadExecutor executor = new ThreadExecutor();
3726	+	f.completeAsync(() -> {if (true) throw ex; return 1;}, executor);
3727	+	try {
3728	+	f.join();
3729	+	shouldThrow();
3730	+	} catch (CompletionException success) {}
3731	+	checkCompletedWithWrappedException(f, ex);
3732	+	assertEquals(1, executor.count.get());
3733	+	}
3734	+
3735	+	/**
3736	+	* orTimeout completes with TimeoutException if not complete
3737	+	*/
3738	+	public void testOrTimeout_timesOut() {
3739	+	long timeoutMillis = timeoutMillis();
3740	+	CompletableFuture<Integer> f = new CompletableFuture<>();
3741	+	long startTime = System.nanoTime();
3742	+	assertSame(f, f.orTimeout(timeoutMillis, MILLISECONDS));
3743	+	checkCompletedWithTimeoutException(f);
3744	+	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
3745	+	}
3746	+
3747	+	/**
3748	+	* orTimeout completes normally if completed before timeout
3749	+	*/
3750	+	public void testOrTimeout_completed() {
3751	+	for (Integer v1 : new Integer[] { 1, null })
3752	+	{
3753	+	CompletableFuture<Integer> f = new CompletableFuture<>();
3754	+	CompletableFuture<Integer> g = new CompletableFuture<>();
3755	+	long startTime = System.nanoTime();
3756	+	f.complete(v1);
3757	+	assertSame(f, f.orTimeout(LONG_DELAY_MS, MILLISECONDS));
3758	+	assertSame(g, g.orTimeout(LONG_DELAY_MS, MILLISECONDS));
3759	+	g.complete(v1);
3760	+	checkCompletedNormally(f, v1);
3761	+	checkCompletedNormally(g, v1);
3762	+	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS / 2);
3763	+	}}
3764	+
3765	+	/**
3766	+	* completeOnTimeout completes with given value if not complete
3767	+	*/
3768	+	public void testCompleteOnTimeout_timesOut() {
3769	+	testInParallel(() -> testCompleteOnTimeout_timesOut(42),
3770	+	() -> testCompleteOnTimeout_timesOut(null));
3771	+	}
3772	+
3773	+	/**
3774	+	* completeOnTimeout completes with given value if not complete
3775	+	*/
3776	+	public void testCompleteOnTimeout_timesOut(Integer v) {
3777	+	long timeoutMillis = timeoutMillis();
3778	+	CompletableFuture<Integer> f = new CompletableFuture<>();
3779	+	long startTime = System.nanoTime();
3780	+	assertSame(f, f.completeOnTimeout(v, timeoutMillis, MILLISECONDS));
3781	+	assertSame(v, f.join());
3782	+	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
3783	+	f.complete(99);         // should have no effect
3784	+	checkCompletedNormally(f, v);
3785	+	}
3786	+
3787	+	/**
3788	+	* completeOnTimeout has no effect if completed within timeout
3789	+	*/
3790	+	public void testCompleteOnTimeout_completed() {
3791	+	for (Integer v1 : new Integer[] { 1, null })
3792	+	{
3793	+	CompletableFuture<Integer> f = new CompletableFuture<>();
3794	+	CompletableFuture<Integer> g = new CompletableFuture<>();
3795	+	long startTime = System.nanoTime();
3796	+	f.complete(v1);
3797	+	assertSame(f, f.completeOnTimeout(-1, LONG_DELAY_MS, MILLISECONDS));
3798	+	assertSame(g, g.completeOnTimeout(-1, LONG_DELAY_MS, MILLISECONDS));
3799	+	g.complete(v1);
3800	+	checkCompletedNormally(f, v1);
3801	+	checkCompletedNormally(g, v1);
3802	+	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS / 2);
3803	+	}}
3804	+
3805	+	/**
3806	+	* delayedExecutor returns an executor that delays submission
3807	+	*/
3808	+	public void testDelayedExecutor() {
3809	+	testInParallel(() -> testDelayedExecutor(null, null),
3810	+	() -> testDelayedExecutor(null, 1),
3811	+	() -> testDelayedExecutor(new ThreadExecutor(), 1),
3812	+	() -> testDelayedExecutor(new ThreadExecutor(), 1));
3813	+	}
3814	+
3815	+	public void testDelayedExecutor(Executor executor, Integer v) throws Exception {
3816	+	long timeoutMillis = timeoutMillis();
3817	+	// Use an "unreasonably long" long timeout to catch lingering threads
3818	+	long longTimeoutMillis = 1000 * 60 * 60 * 24;
3819	+	final Executor delayer, longDelayer;
3820	+	if (executor == null) {
3821	+	delayer = CompletableFuture.delayedExecutor(timeoutMillis, MILLISECONDS);
3822	+	longDelayer = CompletableFuture.delayedExecutor(longTimeoutMillis, MILLISECONDS);
3823	+	} else {
3824	+	delayer = CompletableFuture.delayedExecutor(timeoutMillis, MILLISECONDS, executor);
3825	+	longDelayer = CompletableFuture.delayedExecutor(longTimeoutMillis, MILLISECONDS, executor);
3826	+	}
3827	+	long startTime = System.nanoTime();
3828	+	CompletableFuture<Integer> f =
3829	+	CompletableFuture.supplyAsync(() -> v, delayer);
3830	+	CompletableFuture<Integer> g =
3831	+	CompletableFuture.supplyAsync(() -> v, longDelayer);
3832	+
3833	+	assertNull(g.getNow(null));
3834	+
3835	+	assertSame(v, f.get(LONG_DELAY_MS, MILLISECONDS));
3836	+	long millisElapsed = millisElapsedSince(startTime);
3837	+	assertTrue(millisElapsed >= timeoutMillis);
3838	+	assertTrue(millisElapsed < LONG_DELAY_MS / 2);
3839	+
3840	+	checkCompletedNormally(f, v);
3841	+
3842	+	checkIncomplete(g);
3843	+	assertTrue(g.cancel(true));
3844	+	}
3845	+
3846		//--- tests of implementation details; not part of official tck ---
3847
3848		Object resultOf(CompletableFuture<?> f) {
3849	+	SecurityManager sm = System.getSecurityManager();
3850	+	if (sm != null) {
3851	+	try {
3852	+	System.setSecurityManager(null);
3853	+	} catch (SecurityException giveUp) {
3854	+	return "Reflection not available";
3855	+	}
3856	+	}
3857	+
3858		try {
3859		java.lang.reflect.Field resultField
3860		= CompletableFuture.class.getDeclaredField("result");
3861		resultField.setAccessible(true);
3862		return resultField.get(f);
3863	<	} catch (Throwable t) { throw new AssertionError(t); }
3863	>	} catch (Throwable t) {
3864	>	throw new AssertionError(t);
3865	>	} finally {
3866	>	if (sm != null) System.setSecurityManager(sm);
3867	>	}
3868		}
3869
3870		public void testExceptionPropagationReusesResultObject() {
3871		if (!testImplementationDetails) return;
3872		for (ExecutionMode m : ExecutionMode.values())
3873		{
3874	<	final CompletableFuture<Void> f = new CompletableFuture<>();
3874	>	final CFException ex = new CFException();
3875	>	final CompletableFuture<Integer> v42 = CompletableFuture.completedFuture(42);
3876	>	final CompletableFuture<Integer> incomplete = new CompletableFuture<>();
3877	>
3878	>	final Runnable noopRunnable = new Noop(m);
3879	>	final Consumer<Integer> noopConsumer = new NoopConsumer(m);
3880	>	final Function<Integer, Integer> incFunction = new IncFunction(m);
3881	>
3882	>	List<Function<CompletableFuture<Integer>, CompletableFuture<?>>> funs
3883	>	= new ArrayList<>();
3884	>
3885	>	funs.add((y) -> m.thenRun(y, noopRunnable));
3886	>	funs.add((y) -> m.thenAccept(y, noopConsumer));
3887	>	funs.add((y) -> m.thenApply(y, incFunction));
3888	>
3889	>	funs.add((y) -> m.runAfterEither(y, incomplete, noopRunnable));
3890	>	funs.add((y) -> m.acceptEither(y, incomplete, noopConsumer));
3891	>	funs.add((y) -> m.applyToEither(y, incomplete, incFunction));
3892	>
3893	>	funs.add((y) -> m.runAfterBoth(y, v42, noopRunnable));
3894	>	funs.add((y) -> m.runAfterBoth(v42, y, noopRunnable));
3895	>	funs.add((y) -> m.thenAcceptBoth(y, v42, new SubtractAction(m)));
3896	>	funs.add((y) -> m.thenAcceptBoth(v42, y, new SubtractAction(m)));
3897	>	funs.add((y) -> m.thenCombine(y, v42, new SubtractFunction(m)));
3898	>	funs.add((y) -> m.thenCombine(v42, y, new SubtractFunction(m)));
3899	>
3900	>	funs.add((y) -> m.whenComplete(y, (Integer r, Throwable t) -> {}));
3901	>
3902	>	funs.add((y) -> m.thenCompose(y, new CompletableFutureInc(m)));
3903	>
3904	>	funs.add((y) -> CompletableFuture.allOf(y));
3905	>	funs.add((y) -> CompletableFuture.allOf(y, v42));
3906	>	funs.add((y) -> CompletableFuture.allOf(v42, y));
3907	>	funs.add((y) -> CompletableFuture.anyOf(y));
3908	>	funs.add((y) -> CompletableFuture.anyOf(y, incomplete));
3909	>	funs.add((y) -> CompletableFuture.anyOf(incomplete, y));
3910	>
3911	>	for (Function<CompletableFuture<Integer>, CompletableFuture<?>>
3912	>	fun : funs) {
3913	>	CompletableFuture<Integer> f = new CompletableFuture<>();
3914	>	f.completeExceptionally(ex);
3915	>	CompletableFuture<Integer> src = m.thenApply(f, incFunction);
3916	>	checkCompletedWithWrappedException(src, ex);
3917	>	CompletableFuture<?> dep = fun.apply(src);
3918	>	checkCompletedWithWrappedException(dep, ex);
3919	>	assertSame(resultOf(src), resultOf(dep));
3920	>	}
3921	>
3922	>	for (Function<CompletableFuture<Integer>, CompletableFuture<?>>
3923	>	fun : funs) {
3924	>	CompletableFuture<Integer> f = new CompletableFuture<>();
3925	>	CompletableFuture<Integer> src = m.thenApply(f, incFunction);
3926	>	CompletableFuture<?> dep = fun.apply(src);
3927	>	f.completeExceptionally(ex);
3928	>	checkCompletedWithWrappedException(src, ex);
3929	>	checkCompletedWithWrappedException(dep, ex);
3930	>	assertSame(resultOf(src), resultOf(dep));
3931	>	}
3932	>
3933	>	for (boolean mayInterruptIfRunning : new boolean[] { true, false })
3934	>	for (Function<CompletableFuture<Integer>, CompletableFuture<?>>
3935	>	fun : funs) {
3936	>	CompletableFuture<Integer> f = new CompletableFuture<>();
3937	>	f.cancel(mayInterruptIfRunning);
3938	>	checkCancelled(f);
3939	>	CompletableFuture<Integer> src = m.thenApply(f, incFunction);
3940	>	checkCompletedWithWrappedCancellationException(src);
3941	>	CompletableFuture<?> dep = fun.apply(src);
3942	>	checkCompletedWithWrappedCancellationException(dep);
3943	>	assertSame(resultOf(src), resultOf(dep));
3944	>	}
3945	>
3946	>	for (boolean mayInterruptIfRunning : new boolean[] { true, false })
3947	>	for (Function<CompletableFuture<Integer>, CompletableFuture<?>>
3948	>	fun : funs) {
3949	>	CompletableFuture<Integer> f = new CompletableFuture<>();
3950	>	CompletableFuture<Integer> src = m.thenApply(f, incFunction);
3951	>	CompletableFuture<?> dep = fun.apply(src);
3952	>	f.cancel(mayInterruptIfRunning);
3953	>	checkCancelled(f);
3954	>	checkCompletedWithWrappedCancellationException(src);
3955	>	checkCompletedWithWrappedCancellationException(dep);
3956	>	assertSame(resultOf(src), resultOf(dep));
3957	>	}
3958	>	}}
3959	>
3960	>	/**
3961	>	* Minimal completion stages throw UOE for most non-CompletionStage methods
3962	>	*/
3963	>	public void testMinimalCompletionStage_minimality() {
3964	>	if (!testImplementationDetails) return;
3965	>	Function<Method, String> toSignature =
3966	>	(method) -> method.getName() + Arrays.toString(method.getParameterTypes());
3967	>	Predicate<Method> isNotStatic =
3968	>	(method) -> (method.getModifiers() & Modifier.STATIC) == 0;
3969	>	List<Method> minimalMethods =
3970	>	Stream.of(Object.class, CompletionStage.class)
3971	>	.flatMap((klazz) -> Stream.of(klazz.getMethods()))
3972	>	.filter(isNotStatic)
3973	>	.collect(Collectors.toList());
3974	>	// Methods from CompletableFuture permitted NOT to throw UOE
3975	>	String[] signatureWhitelist = {
3976	>	"newIncompleteFuture[]",
3977	>	"defaultExecutor[]",
3978	>	"minimalCompletionStage[]",
3979	>	"copy[]",
3980	>	};
3981	>	Set<String> permittedMethodSignatures =
3982	>	Stream.concat(minimalMethods.stream().map(toSignature),
3983	>	Stream.of(signatureWhitelist))
3984	>	.collect(Collectors.toSet());
3985	>	List<Method> allMethods = Stream.of(CompletableFuture.class.getMethods())
3986	>	.filter(isNotStatic)
3987	>	.filter((method) -> !permittedMethodSignatures.contains(toSignature.apply(method)))
3988	>	.collect(Collectors.toList());
3989	>
3990	>	List<CompletionStage<Integer>> stages = new ArrayList<>();
3991	>	CompletionStage<Integer> min =
3992	>	new CompletableFuture<Integer>().minimalCompletionStage();
3993	>	stages.add(min);
3994	>	stages.add(min.thenApply(x -> x));
3995	>	stages.add(CompletableFuture.completedStage(1));
3996	>	stages.add(CompletableFuture.failedStage(new CFException()));
3997	>
3998	>	List<Method> bugs = new ArrayList<>();
3999	>	for (Method method : allMethods) {
4000	>	Class<?>[] parameterTypes = method.getParameterTypes();
4001	>	Object[] args = new Object[parameterTypes.length];
4002	>	// Manufacture boxed primitives for primitive params
4003	>	for (int i = 0; i < args.length; i++) {
4004	>	Class<?> type = parameterTypes[i];
4005	>	if (parameterTypes[i] == boolean.class)
4006	>	args[i] = false;
4007	>	else if (parameterTypes[i] == int.class)
4008	>	args[i] = 0;
4009	>	else if (parameterTypes[i] == long.class)
4010	>	args[i] = 0L;
4011	>	}
4012	>	for (CompletionStage<Integer> stage : stages) {
4013	>	try {
4014	>	method.invoke(stage, args);
4015	>	bugs.add(method);
4016	>	}
4017	>	catch (java.lang.reflect.InvocationTargetException expected) {
4018	>	if (! (expected.getCause() instanceof UnsupportedOperationException)) {
4019	>	bugs.add(method);
4020	>	// expected.getCause().printStackTrace();
4021	>	}
4022	>	}
4023	>	catch (ReflectiveOperationException bad) { throw new Error(bad); }
4024	>	}
4025	>	}
4026	>	if (!bugs.isEmpty())
4027	>	throw new Error("Methods did not throw UOE: " + bugs);
4028	>	}
4029	>
4030	>	/**
4031	>	* minimalStage.toCompletableFuture() returns a CompletableFuture that
4032	>	* is completed normally, with the same value, when source is.
4033	>	*/
4034	>	public void testMinimalCompletionStage_toCompletableFuture_normalCompletion() {
4035	>	for (boolean createIncomplete : new boolean[] { true, false })
4036	>	for (Integer v1 : new Integer[] { 1, null })
4037	>	{
4038	>	CompletableFuture<Integer> f = new CompletableFuture<>();
4039	>	CompletionStage<Integer> minimal = f.minimalCompletionStage();
4040	>	if (!createIncomplete) assertTrue(f.complete(v1));
4041	>	CompletableFuture<Integer> g = minimal.toCompletableFuture();
4042	>	if (createIncomplete) {
4043	>	checkIncomplete(f);
4044	>	checkIncomplete(g);
4045	>	assertTrue(f.complete(v1));
4046	>	}
4047	>	checkCompletedNormally(f, v1);
4048	>	checkCompletedNormally(g, v1);
4049	>	}}
4050	>
4051	>	/**
4052	>	* minimalStage.toCompletableFuture() returns a CompletableFuture that
4053	>	* is completed exceptionally when source is.
4054	>	*/
4055	>	public void testMinimalCompletionStage_toCompletableFuture_exceptionalCompletion() {
4056	>	for (boolean createIncomplete : new boolean[] { true, false })
4057	>	{
4058		CFException ex = new CFException();
4059	<	f.completeExceptionally(ex);
4060	<	final CompletableFuture<Void> g = f.thenRun(new Noop(m));
4059	>	CompletableFuture<Integer> f = new CompletableFuture<>();
4060	>	CompletionStage<Integer> minimal = f.minimalCompletionStage();
4061	>	if (!createIncomplete) f.completeExceptionally(ex);
4062	>	CompletableFuture<Integer> g = minimal.toCompletableFuture();
4063	>	if (createIncomplete) {
4064	>	checkIncomplete(f);
4065	>	checkIncomplete(g);
4066	>	f.completeExceptionally(ex);
4067	>	}
4068	>	checkCompletedExceptionally(f, ex);
4069		checkCompletedWithWrappedException(g, ex);
3141	–	final CompletableFuture<Void> h = g.thenRun(new Noop(m));
3142	–	checkCompletedWithWrappedException(h, ex);
3143	–	assertSame(resultOf(g), resultOf(h));
4070		}}
4071
4072	<	//     public void testRunAfterEither_resultDeterminedAtTimeOfCreation() {
4073	<	//         for (ExecutionMode m : ExecutionMode.values())
4074	<	//         for (boolean mayInterruptIfRunning : new boolean[] { true, false })
4075	<	//         for (Integer v1 : new Integer[] { 1, null })
4076	<	//     {
4077	<	//         final CompletableFuture<Integer> f = new CompletableFuture<>();
4078	<	//         final CompletableFuture<Integer> g = new CompletableFuture<>();
4079	<	//         final Noop[] rs = new Noop[2];
4080	<	//         for (int i = 0; i < rs.length; i++) rs[i] = new Noop(m);
4081	<	//         f.complete(v1);
4082	<	//         final CompletableFuture<Void> h0 = m.runAfterEither(f, g, rs[0]);
4083	<	//         final CompletableFuture<Void> h1 = m.runAfterEither(g, f, rs[1]);
4084	<	//         assertTrue(g.cancel(mayInterruptIfRunning));
4085	<	//         checkCompletedNormally(h0, null);
4086	<	//         checkCompletedNormally(h1, null);
4087	<	//         for (Noop r : rs) r.assertInvoked();
4088	<	//     }}
4072	>	/**
4073	>	* minimalStage.toCompletableFuture() gives mutable CompletableFuture
4074	>	*/
4075	>	public void testMinimalCompletionStage_toCompletableFuture_mutable() {
4076	>	for (Integer v1 : new Integer[] { 1, null })
4077	>	{
4078	>	CompletableFuture<Integer> f = new CompletableFuture<>();
4079	>	CompletionStage minimal = f.minimalCompletionStage();
4080	>	CompletableFuture<Integer> g = minimal.toCompletableFuture();
4081	>	assertTrue(g.complete(v1));
4082	>	checkCompletedNormally(g, v1);
4083	>	checkIncomplete(f);
4084	>	checkIncomplete(minimal.toCompletableFuture());
4085	>	}}
4086	>
4087	>	/**
4088	>	* minimalStage.toCompletableFuture().join() awaits completion
4089	>	*/
4090	>	public void testMinimalCompletionStage_toCompletableFuture_join() throws Exception {
4091	>	for (boolean createIncomplete : new boolean[] { true, false })
4092	>	for (Integer v1 : new Integer[] { 1, null })
4093	>	{
4094	>	CompletableFuture<Integer> f = new CompletableFuture<>();
4095	>	if (!createIncomplete) assertTrue(f.complete(v1));
4096	>	CompletionStage<Integer> minimal = f.minimalCompletionStage();
4097	>	if (createIncomplete) assertTrue(f.complete(v1));
4098	>	assertEquals(v1, minimal.toCompletableFuture().join());
4099	>	assertEquals(v1, minimal.toCompletableFuture().get());
4100	>	checkCompletedNormally(minimal.toCompletableFuture(), v1);
4101	>	}}
4102	>
4103	>	/**
4104	>	* Completion of a toCompletableFuture copy of a minimal stage
4105	>	* does not complete its source.
4106	>	*/
4107	>	public void testMinimalCompletionStage_toCompletableFuture_oneWayPropagation() {
4108	>	CompletableFuture<Integer> f = new CompletableFuture<>();
4109	>	CompletionStage<Integer> g = f.minimalCompletionStage();
4110	>	assertTrue(g.toCompletableFuture().complete(1));
4111	>	assertTrue(g.toCompletableFuture().complete(null));
4112	>	assertTrue(g.toCompletableFuture().cancel(true));
4113	>	assertTrue(g.toCompletableFuture().cancel(false));
4114	>	assertTrue(g.toCompletableFuture().completeExceptionally(new CFException()));
4115	>	checkIncomplete(g.toCompletableFuture());
4116	>	f.complete(1);
4117	>	checkCompletedNormally(g.toCompletableFuture(), 1);
4118	>	}
4119	>
4120	>	/** Demo utility method for external reliable toCompletableFuture */
4121	>	static <T> CompletableFuture<T> toCompletableFuture(CompletionStage<T> stage) {
4122	>	CompletableFuture<T> f = new CompletableFuture<>();
4123	>	stage.handle((T t, Throwable ex) -> {
4124	>	if (ex != null) f.completeExceptionally(ex);
4125	>	else f.complete(t);
4126	>	return null;
4127	>	});
4128	>	return f;
4129	>	}
4130	>
4131	>	/** Demo utility method to join a CompletionStage */
4132	>	static <T> T join(CompletionStage<T> stage) {
4133	>	return toCompletableFuture(stage).join();
4134	>	}
4135	>
4136	>	/**
4137	>	* Joining a minimal stage "by hand" works
4138	>	*/
4139	>	public void testMinimalCompletionStage_join_by_hand() {
4140	>	for (boolean createIncomplete : new boolean[] { true, false })
4141	>	for (Integer v1 : new Integer[] { 1, null })
4142	>	{
4143	>	CompletableFuture<Integer> f = new CompletableFuture<>();
4144	>	CompletionStage<Integer> minimal = f.minimalCompletionStage();
4145	>	CompletableFuture<Integer> g = new CompletableFuture<>();
4146	>	if (!createIncomplete) assertTrue(f.complete(v1));
4147	>	minimal.thenAccept((x) -> g.complete(x));
4148	>	if (createIncomplete) assertTrue(f.complete(v1));
4149	>	g.join();
4150	>	checkCompletedNormally(g, v1);
4151	>	checkCompletedNormally(f, v1);
4152	>	assertEquals(v1, join(minimal));
4153	>	}}
4154	>
4155	>	static class Monad {
4156	>	static class ZeroException extends RuntimeException {
4157	>	public ZeroException() { super("monadic zero"); }
4158	>	}
4159	>	// "return", "unit"
4160	>	static <T> CompletableFuture<T> unit(T value) {
4161	>	return completedFuture(value);
4162	>	}
4163	>	// monadic zero ?
4164	>	static <T> CompletableFuture<T> zero() {
4165	>	return failedFuture(new ZeroException());
4166	>	}
4167	>	// >=>
4168	>	static <T,U,V> Function<T, CompletableFuture<V>> compose
4169	>	(Function<T, CompletableFuture<U>> f,
4170	>	Function<U, CompletableFuture<V>> g) {
4171	>	return (x) -> f.apply(x).thenCompose(g);
4172	>	}
4173	>
4174	>	static void assertZero(CompletableFuture<?> f) {
4175	>	try {
4176	>	f.getNow(null);
4177	>	throw new AssertionFailedError("should throw");
4178	>	} catch (CompletionException success) {
4179	>	assertTrue(success.getCause() instanceof ZeroException);
4180	>	}
4181	>	}
4182	>
4183	>	static <T> void assertFutureEquals(CompletableFuture<T> f,
4184	>	CompletableFuture<T> g) {
4185	>	T fval = null, gval = null;
4186	>	Throwable fex = null, gex = null;
4187	>
4188	>	try { fval = f.get(); }
4189	>	catch (ExecutionException ex) { fex = ex.getCause(); }
4190	>	catch (Throwable ex) { fex = ex; }
4191	>
4192	>	try { gval = g.get(); }
4193	>	catch (ExecutionException ex) { gex = ex.getCause(); }
4194	>	catch (Throwable ex) { gex = ex; }
4195	>
4196	>	if (fex != null || gex != null)
4197	>	assertSame(fex.getClass(), gex.getClass());
4198	>	else
4199	>	assertEquals(fval, gval);
4200	>	}
4201	>
4202	>	static class PlusFuture<T> extends CompletableFuture<T> {
4203	>	AtomicReference<Throwable> firstFailure = new AtomicReference<>(null);
4204	>	}
4205	>
4206	>	/** Implements "monadic plus". */
4207	>	static <T> CompletableFuture<T> plus(CompletableFuture<? extends T> f,
4208	>	CompletableFuture<? extends T> g) {
4209	>	PlusFuture<T> plus = new PlusFuture<T>();
4210	>	BiConsumer<T, Throwable> action = (T result, Throwable ex) -> {
4211	>	try {
4212	>	if (ex == null) {
4213	>	if (plus.complete(result))
4214	>	if (plus.firstFailure.get() != null)
4215	>	plus.firstFailure.set(null);
4216	>	}
4217	>	else if (plus.firstFailure.compareAndSet(null, ex)) {
4218	>	if (plus.isDone())
4219	>	plus.firstFailure.set(null);
4220	>	}
4221	>	else {
4222	>	// first failure has precedence
4223	>	Throwable first = plus.firstFailure.getAndSet(null);
4224	>
4225	>	// may fail with "Self-suppression not permitted"
4226	>	try { first.addSuppressed(ex); }
4227	>	catch (Exception ignored) {}
4228	>
4229	>	plus.completeExceptionally(first);
4230	>	}
4231	>	} catch (Throwable unexpected) {
4232	>	plus.completeExceptionally(unexpected);
4233	>	}
4234	>	};
4235	>	f.whenComplete(action);
4236	>	g.whenComplete(action);
4237	>	return plus;
4238	>	}
4239	>	}
4240	>
4241	>	/**
4242	>	* CompletableFuture is an additive monad - sort of.
4243	>	* https://en.wikipedia.org/wiki/Monad_(functional_programming)#Additive_monads
4244	>	*/
4245	>	public void testAdditiveMonad() throws Throwable {
4246	>	Function<Long, CompletableFuture<Long>> unit = Monad::unit;
4247	>	CompletableFuture<Long> zero = Monad.zero();
4248	>
4249	>	// Some mutually non-commutative functions
4250	>	Function<Long, CompletableFuture<Long>> triple
4251	>	= (x) -> Monad.unit(3 * x);
4252	>	Function<Long, CompletableFuture<Long>> inc
4253	>	= (x) -> Monad.unit(x + 1);
4254	>
4255	>	// unit is a right identity: m >>= unit === m
4256	>	Monad.assertFutureEquals(inc.apply(5L).thenCompose(unit),
4257	>	inc.apply(5L));
4258	>	// unit is a left identity: (unit x) >>= f === f x
4259	>	Monad.assertFutureEquals(unit.apply(5L).thenCompose(inc),
4260	>	inc.apply(5L));
4261	>
4262	>	// associativity: (m >>= f) >>= g === m >>= ( \x -> (f x >>= g) )
4263	>	Monad.assertFutureEquals(
4264	>	unit.apply(5L).thenCompose(inc).thenCompose(triple),
4265	>	unit.apply(5L).thenCompose((x) -> inc.apply(x).thenCompose(triple)));
4266	>
4267	>	// The case for CompletableFuture as an additive monad is weaker...
4268	>
4269	>	// zero is a monadic zero
4270	>	Monad.assertZero(zero);
4271	>
4272	>	// left zero: zero >>= f === zero
4273	>	Monad.assertZero(zero.thenCompose(inc));
4274	>	// right zero: f >>= (\x -> zero) === zero
4275	>	Monad.assertZero(inc.apply(5L).thenCompose((x) -> zero));
4276	>
4277	>	// f plus zero === f
4278	>	Monad.assertFutureEquals(Monad.unit(5L),
4279	>	Monad.plus(Monad.unit(5L), zero));
4280	>	// zero plus f === f
4281	>	Monad.assertFutureEquals(Monad.unit(5L),
4282	>	Monad.plus(zero, Monad.unit(5L)));
4283	>	// zero plus zero === zero
4284	>	Monad.assertZero(Monad.plus(zero, zero));
4285	>	{
4286	>	CompletableFuture<Long> f = Monad.plus(Monad.unit(5L),
4287	>	Monad.unit(8L));
4288	>	// non-determinism
4289	>	assertTrue(f.get() == 5L || f.get() == 8L);
4290	>	}
4291	>
4292	>	CompletableFuture<Long> godot = new CompletableFuture<>();
4293	>	// f plus godot === f (doesn't wait for godot)
4294	>	Monad.assertFutureEquals(Monad.unit(5L),
4295	>	Monad.plus(Monad.unit(5L), godot));
4296	>	// godot plus f === f (doesn't wait for godot)
4297	>	Monad.assertFutureEquals(Monad.unit(5L),
4298	>	Monad.plus(godot, Monad.unit(5L)));
4299	>	}
4300	>
4301	>	/** Test long recursive chains of CompletableFutures with cascading completions */
4302	>	public void testRecursiveChains() throws Throwable {
4303	>	for (ExecutionMode m : ExecutionMode.values())
4304	>	for (boolean addDeadEnds : new boolean[] { true, false })
4305	>	{
4306	>	final int val = 42;
4307	>	final int n = expensiveTests ? 1_000 : 2;
4308	>	CompletableFuture<Integer> head = new CompletableFuture<>();
4309	>	CompletableFuture<Integer> tail = head;
4310	>	for (int i = 0; i < n; i++) {
4311	>	if (addDeadEnds) m.thenApply(tail, v -> v + 1);
4312	>	tail = m.thenApply(tail, v -> v + 1);
4313	>	if (addDeadEnds) m.applyToEither(tail, tail, v -> v + 1);
4314	>	tail = m.applyToEither(tail, tail, v -> v + 1);
4315	>	if (addDeadEnds) m.thenCombine(tail, tail, (v, w) -> v + 1);
4316	>	tail = m.thenCombine(tail, tail, (v, w) -> v + 1);
4317	>	}
4318	>	head.complete(val);
4319	>	assertEquals(val + 3 * n, (int) tail.join());
4320	>	}}
4321	>
4322	>	/**
4323	>	* A single CompletableFuture with many dependents.
4324	>	* A demo of scalability - runtime is O(n).
4325	>	*/
4326	>	public void testManyDependents() throws Throwable {
4327	>	final int n = expensiveTests ? 1_000_000 : 10;
4328	>	final CompletableFuture<Void> head = new CompletableFuture<>();
4329	>	final CompletableFuture<Void> complete = CompletableFuture.completedFuture((Void)null);
4330	>	final AtomicInteger count = new AtomicInteger(0);
4331	>	for (int i = 0; i < n; i++) {
4332	>	head.thenRun(() -> count.getAndIncrement());
4333	>	head.thenAccept((x) -> count.getAndIncrement());
4334	>	head.thenApply((x) -> count.getAndIncrement());
4335	>
4336	>	head.runAfterBoth(complete, () -> count.getAndIncrement());
4337	>	head.thenAcceptBoth(complete, (x, y) -> count.getAndIncrement());
4338	>	head.thenCombine(complete, (x, y) -> count.getAndIncrement());
4339	>	complete.runAfterBoth(head, () -> count.getAndIncrement());
4340	>	complete.thenAcceptBoth(head, (x, y) -> count.getAndIncrement());
4341	>	complete.thenCombine(head, (x, y) -> count.getAndIncrement());
4342	>
4343	>	head.runAfterEither(new CompletableFuture<Void>(), () -> count.getAndIncrement());
4344	>	head.acceptEither(new CompletableFuture<Void>(), (x) -> count.getAndIncrement());
4345	>	head.applyToEither(new CompletableFuture<Void>(), (x) -> count.getAndIncrement());
4346	>	new CompletableFuture<Void>().runAfterEither(head, () -> count.getAndIncrement());
4347	>	new CompletableFuture<Void>().acceptEither(head, (x) -> count.getAndIncrement());
4348	>	new CompletableFuture<Void>().applyToEither(head, (x) -> count.getAndIncrement());
4349	>	}
4350	>	head.complete(null);
4351	>	assertEquals(5 * 3 * n, count.get());
4352	>	}
4353	>
4354	>	/** ant -Dvmoptions=-Xmx8m -Djsr166.expensiveTests=true -Djsr166.tckTestClass=CompletableFutureTest tck */
4355	>	public void testCoCompletionGarbageRetention() throws Throwable {
4356	>	final int n = expensiveTests ? 1_000_000 : 10;
4357	>	final CompletableFuture<Integer> incomplete = new CompletableFuture<>();
4358	>	CompletableFuture<Integer> f;
4359	>	for (int i = 0; i < n; i++) {
4360	>	f = new CompletableFuture<>();
4361	>	f.runAfterEither(incomplete, () -> {});
4362	>	f.complete(null);
4363	>
4364	>	f = new CompletableFuture<>();
4365	>	f.acceptEither(incomplete, (x) -> {});
4366	>	f.complete(null);
4367	>
4368	>	f = new CompletableFuture<>();
4369	>	f.applyToEither(incomplete, (x) -> x);
4370	>	f.complete(null);
4371	>
4372	>	f = new CompletableFuture<>();
4373	>	CompletableFuture.anyOf(new CompletableFuture<?>[] { f, incomplete });
4374	>	f.complete(null);
4375	>	}
4376	>
4377	>	for (int i = 0; i < n; i++) {
4378	>	f = new CompletableFuture<>();
4379	>	incomplete.runAfterEither(f, () -> {});
4380	>	f.complete(null);
4381	>
4382	>	f = new CompletableFuture<>();
4383	>	incomplete.acceptEither(f, (x) -> {});
4384	>	f.complete(null);
4385	>
4386	>	f = new CompletableFuture<>();
4387	>	incomplete.applyToEither(f, (x) -> x);
4388	>	f.complete(null);
4389	>
4390	>	f = new CompletableFuture<>();
4391	>	CompletableFuture.anyOf(new CompletableFuture<?>[] { incomplete, f });
4392	>	f.complete(null);
4393	>	}
4394	>	}
4395	>
4396	>	/**
4397	>	* Reproduction recipe for:
4398	>	* 8160402: Garbage retention with CompletableFuture.anyOf
4399	>	* 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
4400	>	*/
4401	>	public void testAnyOfGarbageRetention() throws Throwable {
4402	>	for (Integer v : new Integer[] { 1, null })
4403	>	{
4404	>	final int n = expensiveTests ? 100_000 : 10;
4405	>	CompletableFuture<Integer>[] fs
4406	>	= (CompletableFuture<Integer>[]) new CompletableFuture<?>[100];
4407	>	for (int i = 0; i < fs.length; i++)
4408	>	fs[i] = new CompletableFuture<>();
4409	>	fs[fs.length - 1].complete(v);
4410	>	for (int i = 0; i < n; i++)
4411	>	checkCompletedNormally(CompletableFuture.anyOf(fs), v);
4412	>	}}
4413	>
4414	>	/**
4415	>	* Checks for garbage retention with allOf.
4416	>	*
4417	>	* As of 2016-07, fails with OOME:
4418	>	* ant -Dvmoptions=-Xmx8m -Djsr166.expensiveTests=true -Djsr166.tckTestClass=CompletableFutureTest -Djsr166.methodFilter=testCancelledAllOfGarbageRetention tck
4419	>	*/
4420	>	public void testCancelledAllOfGarbageRetention() throws Throwable {
4421	>	final int n = expensiveTests ? 100_000 : 10;
4422	>	CompletableFuture<Integer>[] fs
4423	>	= (CompletableFuture<Integer>[]) new CompletableFuture<?>[100];
4424	>	for (int i = 0; i < fs.length; i++)
4425	>	fs[i] = new CompletableFuture<>();
4426	>	for (int i = 0; i < n; i++)
4427	>	assertTrue(CompletableFuture.allOf(fs).cancel(false));
4428	>	}
4429	>
4430	>	/**
4431	>	* Checks for garbage retention when a dependent future is
4432	>	* cancelled and garbage-collected.
4433	>	* 8161600: Garbage retention when source CompletableFutures are never completed
4434	>	*
4435	>	* As of 2016-07, fails with OOME:
4436	>	* ant -Dvmoptions=-Xmx8m -Djsr166.expensiveTests=true -Djsr166.tckTestClass=CompletableFutureTest -Djsr166.methodFilter=testCancelledGarbageRetention tck
4437	>	*/
4438	>	public void testCancelledGarbageRetention() throws Throwable {
4439	>	final int n = expensiveTests ? 100_000 : 10;
4440	>	CompletableFuture<Integer> neverCompleted = new CompletableFuture<>();
4441	>	for (int i = 0; i < n; i++)
4442	>	assertTrue(neverCompleted.thenRun(() -> {}).cancel(true));
4443	>	}
4444	>
4445	>	//     static <U> U join(CompletionStage<U> stage) {
4446	>	//         CompletableFuture<U> f = new CompletableFuture<>();
4447	>	//         stage.whenComplete((v, ex) -> {
4448	>	//             if (ex != null) f.completeExceptionally(ex); else f.complete(v);
4449	>	//         });
4450	>	//         return f.join();
4451	>	//     }
4452	>
4453	>	//     static <U> boolean isDone(CompletionStage<U> stage) {
4454	>	//         CompletableFuture<U> f = new CompletableFuture<>();
4455	>	//         stage.whenComplete((v, ex) -> {
4456	>	//             if (ex != null) f.completeExceptionally(ex); else f.complete(v);
4457	>	//         });
4458	>	//         return f.isDone();
4459	>	//     }
4460	>
4461	>	//     static <U> U join2(CompletionStage<U> stage) {
4462	>	//         return stage.toCompletableFuture().copy().join();
4463	>	//     }
4464	>
4465	>	//     static <U> boolean isDone2(CompletionStage<U> stage) {
4466	>	//         return stage.toCompletableFuture().copy().isDone();
4467	>	//     }
4468
4469		}

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