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Comparing jsr166/src/test/tck/CompletableFutureTest.java (file contents):
Revision 1.154 by jsr166, Sun Jun 26 19:27:42 2016 UTC vs.
Revision 1.223 by jsr166, Mon Dec 16 22:36:39 2019 UTC

#	Line 32 | Line 32 | import java.util.concurrent.ForkJoinPool
32		import java.util.concurrent.ForkJoinTask;
33		import java.util.concurrent.RejectedExecutionException;
34		import java.util.concurrent.TimeoutException;
35	–	import java.util.concurrent.TimeUnit;
35		import java.util.concurrent.atomic.AtomicInteger;
36		import java.util.concurrent.atomic.AtomicReference;
37		import java.util.function.BiConsumer;
#	Line 42 | Line 41 | import java.util.function.Function;
41		import java.util.function.Predicate;
42		import java.util.function.Supplier;
43
45	–	import junit.framework.AssertionFailedError;
44		import junit.framework.Test;
45		import junit.framework.TestSuite;
46
#	Line 60 | Line 58 | public class CompletableFutureTest exten
58		void checkIncomplete(CompletableFuture<?> f) {
59		assertFalse(f.isDone());
60		assertFalse(f.isCancelled());
61	<	assertTrue(f.toString().contains("Not completed"));
61	>	assertTrue(f.toString().matches(".*\\[.*Not completed.*\\]"));
62	>
63	>	Object result = null;
64		try {
65	<	assertNull(f.getNow(null));
65	>	result = f.getNow(null);
66		} catch (Throwable fail) { threadUnexpectedException(fail); }
67	+	assertNull(result);
68	+
69		try {
70	<	f.get(0L, SECONDS);
70	>	f.get(randomExpiredTimeout(), randomTimeUnit());
71		shouldThrow();
72		}
73		catch (TimeoutException success) {}
74		catch (Throwable fail) { threadUnexpectedException(fail); }
75		}
76
77	<	<T> void checkCompletedNormally(CompletableFuture<T> f, T value) {
78	<	checkTimedGet(f, value);
77	>	<T> void checkCompletedNormally(CompletableFuture<T> f, T expectedValue) {
78	>	checkTimedGet(f, expectedValue);
79
80	+	assertEquals(expectedValue, f.join());
81	+	assertEquals(expectedValue, f.getNow(null));
82	+
83	+	T result = null;
84		try {
85	<	assertEquals(value, f.join());
80	<	} catch (Throwable fail) { threadUnexpectedException(fail); }
81	<	try {
82	<	assertEquals(value, f.getNow(null));
83	<	} catch (Throwable fail) { threadUnexpectedException(fail); }
84	<	try {
85	<	assertEquals(value, f.get());
85	>	result = f.get();
86		} catch (Throwable fail) { threadUnexpectedException(fail); }
87	+	assertEquals(expectedValue, result);
88	+
89		assertTrue(f.isDone());
90		assertFalse(f.isCancelled());
91		assertFalse(f.isCompletedExceptionally());
92	<	assertTrue(f.toString().contains("[Completed normally]"));
92	>	assertTrue(f.toString().matches(".*\\[.*Completed normally.*\\]"));
93		}
94
95		/**
96		* Returns the "raw" internal exceptional completion of f,
97		* without any additional wrapping with CompletionException.
98		*/
99	<	<U> Throwable exceptionalCompletion(CompletableFuture<U> f) {
100	<	// handle (and whenComplete) can distinguish between "direct"
101	<	// and "wrapped" exceptional completion
102	<	return f.handle((U u, Throwable t) -> t).join();
99	>	Throwable exceptionalCompletion(CompletableFuture<?> f) {
100	>	// handle (and whenComplete and exceptionally) can distinguish
101	>	// between "direct" and "wrapped" exceptional completion
102	>	return f.handle((u, t) -> t).join();
103		}
104
105		void checkCompletedExceptionally(CompletableFuture<?> f,
#	Line 143 | Line 145 | public class CompletableFutureTest exten
145		assertFalse(f.isCancelled());
146		assertTrue(f.isDone());
147		assertTrue(f.isCompletedExceptionally());
148	<	assertTrue(f.toString().contains("[Completed exceptionally]"));
148	>	assertTrue(f.toString().matches(".*\\[.*Completed exceptionally.*\\]"));
149		}
150
151		void checkCompletedWithWrappedCFException(CompletableFuture<?> f) {
152		checkCompletedExceptionally(f, true,
153	<	(t) -> assertTrue(t instanceof CFException));
153	>	t -> assertTrue(t instanceof CFException));
154		}
155
156		void checkCompletedWithWrappedCancellationException(CompletableFuture<?> f) {
157		checkCompletedExceptionally(f, true,
158	<	(t) -> assertTrue(t instanceof CancellationException));
158	>	t -> assertTrue(t instanceof CancellationException));
159		}
160
161		void checkCompletedWithTimeoutException(CompletableFuture<?> f) {
162		checkCompletedExceptionally(f, false,
163	<	(t) -> assertTrue(t instanceof TimeoutException));
163	>	t -> assertTrue(t instanceof TimeoutException));
164		}
165
166		void checkCompletedWithWrappedException(CompletableFuture<?> f,
167		Throwable ex) {
168	<	checkCompletedExceptionally(f, true, (t) -> assertSame(t, ex));
168	>	checkCompletedExceptionally(f, true, t -> assertSame(t, ex));
169		}
170
171		void checkCompletedExceptionally(CompletableFuture<?> f, Throwable ex) {
172	<	checkCompletedExceptionally(f, false, (t) -> assertSame(t, ex));
172	>	checkCompletedExceptionally(f, false, t -> assertSame(t, ex));
173		}
174
175		void checkCancelled(CompletableFuture<?> f) {
#	Line 198 | Line 200 | public class CompletableFutureTest exten
200		assertTrue(f.isDone());
201		assertTrue(f.isCompletedExceptionally());
202		assertTrue(f.isCancelled());
203	<	assertTrue(f.toString().contains("[Completed exceptionally]"));
203	>	assertTrue(f.toString().matches(".*\\[.*Completed exceptionally.*\\]"));
204		}
205
206		/**
#	Line 297 | Line 299 | public class CompletableFutureTest exten
299		}
300
301		f = new CompletableFuture<>();
302	<	f.completeExceptionally(ex = new CFException());
302	>	f.completeExceptionally(new CFException());
303		f.obtrudeValue(v1);
304		checkCompletedNormally(f, v1);
305		f.obtrudeException(ex = new CFException());
#	Line 334 | Line 336 | public class CompletableFutureTest exten
336		/**
337		* toString indicates current completion state
338		*/
339	<	public void testToString() {
340	<	CompletableFuture<String> f;
341	<
342	<	f = new CompletableFuture<String>();
343	<	assertTrue(f.toString().contains("[Not completed]"));
339	>	public void testToString_incomplete() {
340	>	CompletableFuture<String> f = new CompletableFuture<>();
341	>	assertTrue(f.toString().matches(".*\\[.*Not completed.*\\]"));
342	>	if (testImplementationDetails)
343	>	assertEquals(identityString(f) + "[Not completed]",
344	>	f.toString());
345	>	}
346
347	+	public void testToString_normal() {
348	+	CompletableFuture<String> f = new CompletableFuture<>();
349		assertTrue(f.complete("foo"));
350	<	assertTrue(f.toString().contains("[Completed normally]"));
350	>	assertTrue(f.toString().matches(".*\\[.*Completed normally.*\\]"));
351	>	if (testImplementationDetails)
352	>	assertEquals(identityString(f) + "[Completed normally]",
353	>	f.toString());
354	>	}
355
356	<	f = new CompletableFuture<String>();
356	>	public void testToString_exception() {
357	>	CompletableFuture<String> f = new CompletableFuture<>();
358		assertTrue(f.completeExceptionally(new IndexOutOfBoundsException()));
359	<	assertTrue(f.toString().contains("[Completed exceptionally]"));
359	>	assertTrue(f.toString().matches(".*\\[.*Completed exceptionally.*\\]"));
360	>	if (testImplementationDetails)
361	>	assertTrue(f.toString().startsWith(
362	>	identityString(f) + "[Completed exceptionally: "));
363	>	}
364
365	+	public void testToString_cancelled() {
366		for (boolean mayInterruptIfRunning : new boolean[] { true, false }) {
367	<	f = new CompletableFuture<String>();
367	>	CompletableFuture<String> f = new CompletableFuture<>();
368		assertTrue(f.cancel(mayInterruptIfRunning));
369	<	assertTrue(f.toString().contains("[Completed exceptionally]"));
369	>	assertTrue(f.toString().matches(".*\\[.*Completed exceptionally.*\\]"));
370	>	if (testImplementationDetails)
371	>	assertTrue(f.toString().startsWith(
372	>	identityString(f) + "[Completed exceptionally: "));
373		}
374		}
375
#	Line 362 | Line 381 | public class CompletableFutureTest exten
381		checkCompletedNormally(f, "test");
382		}
383
384	<	abstract class CheckedAction {
384	>	abstract static class CheckedAction {
385		int invocationCount = 0;
386		final ExecutionMode m;
387		CheckedAction(ExecutionMode m) { this.m = m; }
#	Line 374 | Line 393 | public class CompletableFutureTest exten
393		void assertInvoked() { assertEquals(1, invocationCount); }
394		}
395
396	<	abstract class CheckedIntegerAction extends CheckedAction {
396	>	abstract static class CheckedIntegerAction extends CheckedAction {
397		Integer value;
398		CheckedIntegerAction(ExecutionMode m) { super(m); }
399		void assertValue(Integer expected) {
#	Line 383 | Line 402 | public class CompletableFutureTest exten
402		}
403		}
404
405	<	class IntegerSupplier extends CheckedAction
405	>	static class IntegerSupplier extends CheckedAction
406		implements Supplier<Integer>
407		{
408		final Integer value;
#	Line 402 | Line 421 | public class CompletableFutureTest exten
421		return (x == null) ? null : x + 1;
422		}
423
424	<	class NoopConsumer extends CheckedIntegerAction
424	>	static class NoopConsumer extends CheckedIntegerAction
425		implements Consumer<Integer>
426		{
427		NoopConsumer(ExecutionMode m) { super(m); }
#	Line 412 | Line 431 | public class CompletableFutureTest exten
431		}
432		}
433
434	<	class IncFunction extends CheckedIntegerAction
434	>	static class IncFunction extends CheckedIntegerAction
435		implements Function<Integer,Integer>
436		{
437		IncFunction(ExecutionMode m) { super(m); }
#	Line 430 | Line 449 | public class CompletableFutureTest exten
449		- ((y == null) ? 99 : y.intValue());
450		}
451
452	<	class SubtractAction extends CheckedIntegerAction
452	>	static class SubtractAction extends CheckedIntegerAction
453		implements BiConsumer<Integer, Integer>
454		{
455		SubtractAction(ExecutionMode m) { super(m); }
#	Line 440 | Line 459 | public class CompletableFutureTest exten
459		}
460		}
461
462	<	class SubtractFunction extends CheckedIntegerAction
462	>	static class SubtractFunction extends CheckedIntegerAction
463		implements BiFunction<Integer, Integer, Integer>
464		{
465		SubtractFunction(ExecutionMode m) { super(m); }
#	Line 450 | Line 469 | public class CompletableFutureTest exten
469		}
470		}
471
472	<	class Noop extends CheckedAction implements Runnable {
472	>	static class Noop extends CheckedAction implements Runnable {
473		Noop(ExecutionMode m) { super(m); }
474		public void run() {
475		invoked();
476		}
477		}
478
479	<	class FailingSupplier extends CheckedAction
479	>	static class FailingSupplier extends CheckedAction
480		implements Supplier<Integer>
481		{
482		final CFException ex;
#	Line 468 | Line 487 | public class CompletableFutureTest exten
487		}
488		}
489
490	<	class FailingConsumer extends CheckedIntegerAction
490	>	static class FailingConsumer extends CheckedIntegerAction
491		implements Consumer<Integer>
492		{
493		final CFException ex;
#	Line 480 | Line 499 | public class CompletableFutureTest exten
499		}
500		}
501
502	<	class FailingBiConsumer extends CheckedIntegerAction
502	>	static class FailingBiConsumer extends CheckedIntegerAction
503		implements BiConsumer<Integer, Integer>
504		{
505		final CFException ex;
#	Line 492 | Line 511 | public class CompletableFutureTest exten
511		}
512		}
513
514	<	class FailingFunction extends CheckedIntegerAction
514	>	static class FailingFunction extends CheckedIntegerAction
515		implements Function<Integer, Integer>
516		{
517		final CFException ex;
#	Line 504 | Line 523 | public class CompletableFutureTest exten
523		}
524		}
525
526	<	class FailingBiFunction extends CheckedIntegerAction
526	>	static class FailingBiFunction extends CheckedIntegerAction
527		implements BiFunction<Integer, Integer, Integer>
528		{
529		final CFException ex;
#	Line 516 | Line 535 | public class CompletableFutureTest exten
535		}
536		}
537
538	<	class FailingRunnable extends CheckedAction implements Runnable {
538	>	static class FailingRunnable extends CheckedAction implements Runnable {
539		final CFException ex;
540		FailingRunnable(ExecutionMode m) { super(m); ex = new CFException(); }
541		public void run() {
#	Line 525 | Line 544 | public class CompletableFutureTest exten
544		}
545		}
546
547	<	class CompletableFutureInc extends CheckedIntegerAction
547	>	static class CompletableFutureInc extends CheckedIntegerAction
548		implements Function<Integer, CompletableFuture<Integer>>
549		{
550		CompletableFutureInc(ExecutionMode m) { super(m); }
551		public CompletableFuture<Integer> apply(Integer x) {
552		invoked();
553		value = x;
554	<	CompletableFuture<Integer> f = new CompletableFuture<>();
555	<	assertTrue(f.complete(inc(x)));
556	<	return f;
554	>	return CompletableFuture.completedFuture(inc(x));
555	>	}
556	>	}
557	>
558	>	static class FailingExceptionalCompletableFutureFunction extends CheckedAction
559	>	implements Function<Throwable, CompletableFuture<Integer>>
560	>	{
561	>	final CFException ex;
562	>	FailingExceptionalCompletableFutureFunction(ExecutionMode m) { super(m); ex = new CFException(); }
563	>	public CompletableFuture<Integer> apply(Throwable x) {
564	>	invoked();
565	>	throw ex;
566	>	}
567	>	}
568	>
569	>	static class ExceptionalCompletableFutureFunction extends CheckedAction
570	>	implements Function<Throwable, CompletionStage<Integer>> {
571	>	final Integer value = 3;
572	>	ExceptionalCompletableFutureFunction(ExecutionMode m) { super(m); }
573	>	public CompletionStage<Integer> apply(Throwable x) {
574	>	invoked();
575	>	return CompletableFuture.completedFuture(value);
576		}
577		}
578
579	<	class FailingCompletableFutureFunction extends CheckedIntegerAction
579	>	static class FailingCompletableFutureFunction extends CheckedIntegerAction
580		implements Function<Integer, CompletableFuture<Integer>>
581		{
582		final CFException ex;
#	Line 550 | Line 588 | public class CompletableFutureTest exten
588		}
589		}
590
591	+	static class CountingRejectingExecutor implements Executor {
592	+	final RejectedExecutionException ex = new RejectedExecutionException();
593	+	final AtomicInteger count = new AtomicInteger(0);
594	+	public void execute(Runnable r) {
595	+	count.getAndIncrement();
596	+	throw ex;
597	+	}
598	+	}
599	+
600		// Used for explicit executor tests
601		static final class ThreadExecutor implements Executor {
602		final AtomicInteger count = new AtomicInteger(0);
#	Line 644 | Line 691 | public class CompletableFutureTest exten
691		Function<? super T,U> a) {
692		return f.applyToEither(g, a);
693		}
694	+	public <T> CompletableFuture<T> exceptionally
695	+	(CompletableFuture<T> f,
696	+	Function<Throwable, ? extends T> fn) {
697	+	return f.exceptionally(fn);
698	+	}
699	+	public <T> CompletableFuture<T> exceptionallyCompose
700	+	(CompletableFuture<T> f, Function<Throwable, ? extends CompletionStage<T>> fn) {
701	+	return f.exceptionallyCompose(fn);
702	+	}
703		},
648	–
704		ASYNC {
705		public void checkExecutionMode() {
706		assertEquals(defaultExecutorIsCommonPool,
#	Line 718 | Line 773 | public class CompletableFutureTest exten
773		Function<? super T,U> a) {
774		return f.applyToEitherAsync(g, a);
775		}
776	+	public <T> CompletableFuture<T> exceptionally
777	+	(CompletableFuture<T> f,
778	+	Function<Throwable, ? extends T> fn) {
779	+	return f.exceptionallyAsync(fn);
780	+	}
781	+
782	+	public <T> CompletableFuture<T> exceptionallyCompose
783	+	(CompletableFuture<T> f, Function<Throwable, ? extends CompletionStage<T>> fn) {
784	+	return f.exceptionallyComposeAsync(fn);
785	+	}
786	+
787		},
788
789		EXECUTOR {
#	Line 791 | Line 857 | public class CompletableFutureTest exten
857		Function<? super T,U> a) {
858		return f.applyToEitherAsync(g, a, new ThreadExecutor());
859		}
860	+	public <T> CompletableFuture<T> exceptionally
861	+	(CompletableFuture<T> f,
862	+	Function<Throwable, ? extends T> fn) {
863	+	return f.exceptionallyAsync(fn, new ThreadExecutor());
864	+	}
865	+	public <T> CompletableFuture<T> exceptionallyCompose
866	+	(CompletableFuture<T> f, Function<Throwable, ? extends CompletionStage<T>> fn) {
867	+	return f.exceptionallyComposeAsync(fn, new ThreadExecutor());
868	+	}
869	+
870		};
871
872		public abstract void checkExecutionMode();
#	Line 833 | Line 909 | public class CompletableFutureTest exten
909		(CompletableFuture<T> f,
910		CompletionStage<? extends T> g,
911		Function<? super T,U> a);
912	+	public abstract <T> CompletableFuture<T> exceptionally
913	+	(CompletableFuture<T> f,
914	+	Function<Throwable, ? extends T> fn);
915	+	public abstract <T> CompletableFuture<T> exceptionallyCompose
916	+	(CompletableFuture<T> f,
917	+	Function<Throwable, ? extends CompletionStage<T>> fn);
918		}
919
920		/**
#	Line 840 | Line 922 | public class CompletableFutureTest exten
922		* normally, and source result is propagated
923		*/
924		public void testExceptionally_normalCompletion() {
925	+	for (ExecutionMode m : ExecutionMode.values())
926		for (boolean createIncomplete : new boolean[] { true, false })
927		for (Integer v1 : new Integer[] { 1, null })
928		{
929	<	final AtomicInteger a = new AtomicInteger(0);
929	>	final AtomicInteger ran = new AtomicInteger(0);
930		final CompletableFuture<Integer> f = new CompletableFuture<>();
931		if (!createIncomplete) assertTrue(f.complete(v1));
932	<	final CompletableFuture<Integer> g = f.exceptionally
933	<	((Throwable t) -> {
934	<	a.getAndIncrement();
935	<	threadFail("should not be called");
853	<	return null;            // unreached
932	>	final CompletableFuture<Integer> g = m.exceptionally
933	>	(f, (Throwable t) -> {
934	>	ran.getAndIncrement();
935	>	throw new AssertionError("should not be called");
936		});
937		if (createIncomplete) assertTrue(f.complete(v1));
938
939		checkCompletedNormally(g, v1);
940		checkCompletedNormally(f, v1);
941	<	assertEquals(0, a.get());
941	>	assertEquals(0, ran.get());
942		}}
943
944		/**
#	Line 864 | Line 946 | public class CompletableFutureTest exten
946		* exception
947		*/
948		public void testExceptionally_exceptionalCompletion() {
949	+	for (ExecutionMode m : ExecutionMode.values())
950		for (boolean createIncomplete : new boolean[] { true, false })
951		for (Integer v1 : new Integer[] { 1, null })
952		{
953	<	final AtomicInteger a = new AtomicInteger(0);
953	>	final AtomicInteger ran = new AtomicInteger(0);
954		final CFException ex = new CFException();
955		final CompletableFuture<Integer> f = new CompletableFuture<>();
956		if (!createIncomplete) f.completeExceptionally(ex);
957	<	final CompletableFuture<Integer> g = f.exceptionally
958	<	((Throwable t) -> {
959	<	ExecutionMode.SYNC.checkExecutionMode();
960	<	threadAssertSame(t, ex);
961	<	a.getAndIncrement();
957	>	final CompletableFuture<Integer> g = m.exceptionally
958	>	(f, (Throwable t) -> {
959	>	m.checkExecutionMode();
960	>	assertSame(t, ex);
961	>	ran.getAndIncrement();
962		return v1;
963		});
964		if (createIncomplete) f.completeExceptionally(ex);
965
966		checkCompletedNormally(g, v1);
967	<	assertEquals(1, a.get());
967	>	assertEquals(1, ran.get());
968		}}
969
970		/**
#	Line 889 | Line 972 | public class CompletableFutureTest exten
972		* exceptionally with that exception
973		*/
974		public void testExceptionally_exceptionalCompletionActionFailed() {
975	+	for (ExecutionMode m : ExecutionMode.values())
976		for (boolean createIncomplete : new boolean[] { true, false })
977		{
978	<	final AtomicInteger a = new AtomicInteger(0);
978	>	final AtomicInteger ran = new AtomicInteger(0);
979		final CFException ex1 = new CFException();
980		final CFException ex2 = new CFException();
981		final CompletableFuture<Integer> f = new CompletableFuture<>();
982		if (!createIncomplete) f.completeExceptionally(ex1);
983	<	final CompletableFuture<Integer> g = f.exceptionally
984	<	((Throwable t) -> {
985	<	ExecutionMode.SYNC.checkExecutionMode();
986	<	threadAssertSame(t, ex1);
987	<	a.getAndIncrement();
983	>	final CompletableFuture<Integer> g = m.exceptionally
984	>	(f, (Throwable t) -> {
985	>	m.checkExecutionMode();
986	>	assertSame(t, ex1);
987	>	ran.getAndIncrement();
988		throw ex2;
989		});
990		if (createIncomplete) f.completeExceptionally(ex1);
991
992		checkCompletedWithWrappedException(g, ex2);
993		checkCompletedExceptionally(f, ex1);
994	<	assertEquals(1, a.get());
994	>	assertEquals(1, ran.get());
995		}}
996
997		/**
#	Line 919 | Line 1003 | public class CompletableFutureTest exten
1003		for (boolean createIncomplete : new boolean[] { true, false })
1004		for (Integer v1 : new Integer[] { 1, null })
1005		{
1006	<	final AtomicInteger a = new AtomicInteger(0);
1006	>	final AtomicInteger ran = new AtomicInteger(0);
1007		final CompletableFuture<Integer> f = new CompletableFuture<>();
1008		if (!createIncomplete) assertTrue(f.complete(v1));
1009		final CompletableFuture<Integer> g = m.whenComplete
1010		(f,
1011		(Integer result, Throwable t) -> {
1012		m.checkExecutionMode();
1013	<	threadAssertSame(result, v1);
1014	<	threadAssertNull(t);
1015	<	a.getAndIncrement();
1013	>	assertSame(result, v1);
1014	>	assertNull(t);
1015	>	ran.getAndIncrement();
1016		});
1017		if (createIncomplete) assertTrue(f.complete(v1));
1018
1019		checkCompletedNormally(g, v1);
1020		checkCompletedNormally(f, v1);
1021	<	assertEquals(1, a.get());
1021	>	assertEquals(1, ran.get());
1022		}}
1023
1024		/**
#	Line 945 | Line 1029 | public class CompletableFutureTest exten
1029		for (ExecutionMode m : ExecutionMode.values())
1030		for (boolean createIncomplete : new boolean[] { true, false })
1031		{
1032	<	final AtomicInteger a = new AtomicInteger(0);
1032	>	final AtomicInteger ran = new AtomicInteger(0);
1033		final CFException ex = new CFException();
1034		final CompletableFuture<Integer> f = new CompletableFuture<>();
1035		if (!createIncomplete) f.completeExceptionally(ex);
#	Line 953 | Line 1037 | public class CompletableFutureTest exten
1037		(f,
1038		(Integer result, Throwable t) -> {
1039		m.checkExecutionMode();
1040	<	threadAssertNull(result);
1041	<	threadAssertSame(t, ex);
1042	<	a.getAndIncrement();
1040	>	assertNull(result);
1041	>	assertSame(t, ex);
1042	>	ran.getAndIncrement();
1043		});
1044		if (createIncomplete) f.completeExceptionally(ex);
1045
1046		checkCompletedWithWrappedException(g, ex);
1047		checkCompletedExceptionally(f, ex);
1048	<	assertEquals(1, a.get());
1048	>	assertEquals(1, ran.get());
1049		}}
1050
1051		/**
#	Line 973 | Line 1057 | public class CompletableFutureTest exten
1057		for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1058		for (boolean createIncomplete : new boolean[] { true, false })
1059		{
1060	<	final AtomicInteger a = new AtomicInteger(0);
1060	>	final AtomicInteger ran = new AtomicInteger(0);
1061		final CompletableFuture<Integer> f = new CompletableFuture<>();
1062		if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
1063		final CompletableFuture<Integer> g = m.whenComplete
1064		(f,
1065		(Integer result, Throwable t) -> {
1066		m.checkExecutionMode();
1067	<	threadAssertNull(result);
1068	<	threadAssertTrue(t instanceof CancellationException);
1069	<	a.getAndIncrement();
1067	>	assertNull(result);
1068	>	assertTrue(t instanceof CancellationException);
1069	>	ran.getAndIncrement();
1070		});
1071		if (createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
1072
1073		checkCompletedWithWrappedCancellationException(g);
1074		checkCancelled(f);
1075	<	assertEquals(1, a.get());
1075	>	assertEquals(1, ran.get());
1076		}}
1077
1078		/**
#	Line 1000 | Line 1084 | public class CompletableFutureTest exten
1084		for (ExecutionMode m : ExecutionMode.values())
1085		for (Integer v1 : new Integer[] { 1, null })
1086		{
1087	<	final AtomicInteger a = new AtomicInteger(0);
1087	>	final AtomicInteger ran = new AtomicInteger(0);
1088		final CFException ex = new CFException();
1089		final CompletableFuture<Integer> f = new CompletableFuture<>();
1090		if (!createIncomplete) assertTrue(f.complete(v1));
#	Line 1008 | Line 1092 | public class CompletableFutureTest exten
1092		(f,
1093		(Integer result, Throwable t) -> {
1094		m.checkExecutionMode();
1095	<	threadAssertSame(result, v1);
1096	<	threadAssertNull(t);
1097	<	a.getAndIncrement();
1095	>	assertSame(result, v1);
1096	>	assertNull(t);
1097	>	ran.getAndIncrement();
1098		throw ex;
1099		});
1100		if (createIncomplete) assertTrue(f.complete(v1));
1101
1102		checkCompletedWithWrappedException(g, ex);
1103		checkCompletedNormally(f, v1);
1104	<	assertEquals(1, a.get());
1104	>	assertEquals(1, ran.get());
1105		}}
1106
1107		/**
#	Line 1029 | Line 1113 | public class CompletableFutureTest exten
1113		for (boolean createIncomplete : new boolean[] { true, false })
1114		for (ExecutionMode m : ExecutionMode.values())
1115		{
1116	<	final AtomicInteger a = new AtomicInteger(0);
1116	>	final AtomicInteger ran = new AtomicInteger(0);
1117		final CFException ex1 = new CFException();
1118		final CFException ex2 = new CFException();
1119		final CompletableFuture<Integer> f = new CompletableFuture<>();
#	Line 1039 | Line 1123 | public class CompletableFutureTest exten
1123		(f,
1124		(Integer result, Throwable t) -> {
1125		m.checkExecutionMode();
1126	<	threadAssertSame(t, ex1);
1127	<	threadAssertNull(result);
1128	<	a.getAndIncrement();
1126	>	assertSame(t, ex1);
1127	>	assertNull(result);
1128	>	ran.getAndIncrement();
1129		throw ex2;
1130		});
1131		if (createIncomplete) f.completeExceptionally(ex1);
#	Line 1052 | Line 1136 | public class CompletableFutureTest exten
1136		assertEquals(1, ex1.getSuppressed().length);
1137		assertSame(ex2, ex1.getSuppressed()[0]);
1138		}
1139	<	assertEquals(1, a.get());
1139	>	assertEquals(1, ran.get());
1140		}}
1141
1142		/**
#	Line 1065 | Line 1149 | public class CompletableFutureTest exten
1149		for (Integer v1 : new Integer[] { 1, null })
1150		{
1151		final CompletableFuture<Integer> f = new CompletableFuture<>();
1152	<	final AtomicInteger a = new AtomicInteger(0);
1152	>	final AtomicInteger ran = new AtomicInteger(0);
1153		if (!createIncomplete) assertTrue(f.complete(v1));
1154		final CompletableFuture<Integer> g = m.handle
1155		(f,
1156		(Integer result, Throwable t) -> {
1157		m.checkExecutionMode();
1158	<	threadAssertSame(result, v1);
1159	<	threadAssertNull(t);
1160	<	a.getAndIncrement();
1158	>	assertSame(result, v1);
1159	>	assertNull(t);
1160	>	ran.getAndIncrement();
1161		return inc(v1);
1162		});
1163		if (createIncomplete) assertTrue(f.complete(v1));
1164
1165		checkCompletedNormally(g, inc(v1));
1166		checkCompletedNormally(f, v1);
1167	<	assertEquals(1, a.get());
1167	>	assertEquals(1, ran.get());
1168		}}
1169
1170		/**
#	Line 1093 | Line 1177 | public class CompletableFutureTest exten
1177		for (Integer v1 : new Integer[] { 1, null })
1178		{
1179		final CompletableFuture<Integer> f = new CompletableFuture<>();
1180	<	final AtomicInteger a = new AtomicInteger(0);
1180	>	final AtomicInteger ran = new AtomicInteger(0);
1181		final CFException ex = new CFException();
1182		if (!createIncomplete) f.completeExceptionally(ex);
1183		final CompletableFuture<Integer> g = m.handle
1184		(f,
1185		(Integer result, Throwable t) -> {
1186		m.checkExecutionMode();
1187	<	threadAssertNull(result);
1188	<	threadAssertSame(t, ex);
1189	<	a.getAndIncrement();
1187	>	assertNull(result);
1188	>	assertSame(t, ex);
1189	>	ran.getAndIncrement();
1190		return v1;
1191		});
1192		if (createIncomplete) f.completeExceptionally(ex);
1193
1194		checkCompletedNormally(g, v1);
1195		checkCompletedExceptionally(f, ex);
1196	<	assertEquals(1, a.get());
1196	>	assertEquals(1, ran.get());
1197		}}
1198
1199		/**
#	Line 1123 | Line 1207 | public class CompletableFutureTest exten
1207		for (Integer v1 : new Integer[] { 1, null })
1208		{
1209		final CompletableFuture<Integer> f = new CompletableFuture<>();
1210	<	final AtomicInteger a = new AtomicInteger(0);
1210	>	final AtomicInteger ran = new AtomicInteger(0);
1211		if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
1212		final CompletableFuture<Integer> g = m.handle
1213		(f,
1214		(Integer result, Throwable t) -> {
1215		m.checkExecutionMode();
1216	<	threadAssertNull(result);
1217	<	threadAssertTrue(t instanceof CancellationException);
1218	<	a.getAndIncrement();
1216	>	assertNull(result);
1217	>	assertTrue(t instanceof CancellationException);
1218	>	ran.getAndIncrement();
1219		return v1;
1220		});
1221		if (createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
1222
1223		checkCompletedNormally(g, v1);
1224		checkCancelled(f);
1225	<	assertEquals(1, a.get());
1225	>	assertEquals(1, ran.get());
1226		}}
1227
1228		/**
#	Line 1151 | Line 1235 | public class CompletableFutureTest exten
1235		for (Integer v1 : new Integer[] { 1, null })
1236		{
1237		final CompletableFuture<Integer> f = new CompletableFuture<>();
1238	<	final AtomicInteger a = new AtomicInteger(0);
1238	>	final AtomicInteger ran = new AtomicInteger(0);
1239		final CFException ex = new CFException();
1240		if (!createIncomplete) assertTrue(f.complete(v1));
1241		final CompletableFuture<Integer> g = m.handle
1242		(f,
1243		(Integer result, Throwable t) -> {
1244		m.checkExecutionMode();
1245	<	threadAssertSame(result, v1);
1246	<	threadAssertNull(t);
1247	<	a.getAndIncrement();
1245	>	assertSame(result, v1);
1246	>	assertNull(t);
1247	>	ran.getAndIncrement();
1248		throw ex;
1249		});
1250		if (createIncomplete) assertTrue(f.complete(v1));
1251
1252		checkCompletedWithWrappedException(g, ex);
1253		checkCompletedNormally(f, v1);
1254	<	assertEquals(1, a.get());
1254	>	assertEquals(1, ran.get());
1255		}}
1256
1257		/**
#	Line 1179 | Line 1263 | public class CompletableFutureTest exten
1263		for (boolean createIncomplete : new boolean[] { true, false })
1264		for (ExecutionMode m : ExecutionMode.values())
1265		{
1266	<	final AtomicInteger a = new AtomicInteger(0);
1266	>	final AtomicInteger ran = new AtomicInteger(0);
1267		final CFException ex1 = new CFException();
1268		final CFException ex2 = new CFException();
1269		final CompletableFuture<Integer> f = new CompletableFuture<>();
#	Line 1189 | Line 1273 | public class CompletableFutureTest exten
1273		(f,
1274		(Integer result, Throwable t) -> {
1275		m.checkExecutionMode();
1276	<	threadAssertNull(result);
1277	<	threadAssertSame(ex1, t);
1278	<	a.getAndIncrement();
1276	>	assertNull(result);
1277	>	assertSame(ex1, t);
1278	>	ran.getAndIncrement();
1279		throw ex2;
1280		});
1281		if (createIncomplete) f.completeExceptionally(ex1);
1282
1283		checkCompletedWithWrappedException(g, ex2);
1284		checkCompletedExceptionally(f, ex1);
1285	<	assertEquals(1, a.get());
1285	>	assertEquals(1, ran.get());
1286		}}
1287
1288		/**
#	Line 1234 | Line 1318 | public class CompletableFutureTest exten
1318		r.assertInvoked();
1319		}}
1320
1321	+	@SuppressWarnings("FutureReturnValueIgnored")
1322	+	public void testRunAsync_rejectingExecutor() {
1323	+	CountingRejectingExecutor e = new CountingRejectingExecutor();
1324	+	try {
1325	+	CompletableFuture.runAsync(() -> {}, e);
1326	+	shouldThrow();
1327	+	} catch (Throwable t) {
1328	+	assertSame(e.ex, t);
1329	+	}
1330	+
1331	+	assertEquals(1, e.count.get());
1332	+	}
1333	+
1334		/**
1335		* supplyAsync completes with result of supplier
1336		*/
#	Line 1268 | Line 1365 | public class CompletableFutureTest exten
1365		r.assertInvoked();
1366		}}
1367
1368	+	@SuppressWarnings("FutureReturnValueIgnored")
1369	+	public void testSupplyAsync_rejectingExecutor() {
1370	+	CountingRejectingExecutor e = new CountingRejectingExecutor();
1371	+	try {
1372	+	CompletableFuture.supplyAsync(() -> null, e);
1373	+	shouldThrow();
1374	+	} catch (Throwable t) {
1375	+	assertSame(e.ex, t);
1376	+	}
1377	+
1378	+	assertEquals(1, e.count.get());
1379	+	}
1380	+
1381		// seq completion methods
1382
1383		/**
#	Line 2530 | Line 2640 | public class CompletableFutureTest exten
2640
2641		// unspecified behavior - both source completions available
2642		try {
2643	<	assertEquals(null, h0.join());
2643	>	assertNull(h0.join());
2644		rs[0].assertValue(v1);
2645		} catch (CompletionException ok) {
2646		checkCompletedWithWrappedException(h0, ex);
2647		rs[0].assertNotInvoked();
2648		}
2649		try {
2650	<	assertEquals(null, h1.join());
2650	>	assertNull(h1.join());
2651		rs[1].assertValue(v1);
2652		} catch (CompletionException ok) {
2653		checkCompletedWithWrappedException(h1, ex);
2654		rs[1].assertNotInvoked();
2655		}
2656		try {
2657	<	assertEquals(null, h2.join());
2657	>	assertNull(h2.join());
2658		rs[2].assertValue(v1);
2659		} catch (CompletionException ok) {
2660		checkCompletedWithWrappedException(h2, ex);
2661		rs[2].assertNotInvoked();
2662		}
2663		try {
2664	<	assertEquals(null, h3.join());
2664	>	assertNull(h3.join());
2665		rs[3].assertValue(v1);
2666		} catch (CompletionException ok) {
2667		checkCompletedWithWrappedException(h3, ex);
#	Line 2667 | Line 2777 | public class CompletableFutureTest exten
2777		for (ExecutionMode m : ExecutionMode.values())
2778		for (Integer v1 : new Integer[] { 1, null })
2779		for (Integer v2 : new Integer[] { 2, null })
2780	+	for (boolean pushNop : new boolean[] { true, false })
2781		{
2782		final CompletableFuture<Integer> f = new CompletableFuture<>();
2783		final CompletableFuture<Integer> g = new CompletableFuture<>();
#	Line 2679 | Line 2790 | public class CompletableFutureTest exten
2790		checkIncomplete(h1);
2791		rs[0].assertNotInvoked();
2792		rs[1].assertNotInvoked();
2793	+	if (pushNop) {          // ad hoc test of intra-completion interference
2794	+	m.thenRun(f, () -> {});
2795	+	m.thenRun(g, () -> {});
2796	+	}
2797		f.complete(v1);
2798		checkCompletedNormally(h0, null);
2799		checkCompletedNormally(h1, null);
#	Line 2785 | Line 2900 | public class CompletableFutureTest exten
2900
2901		// unspecified behavior - both source completions available
2902		try {
2903	<	assertEquals(null, h0.join());
2903	>	assertNull(h0.join());
2904		rs[0].assertInvoked();
2905		} catch (CompletionException ok) {
2906		checkCompletedWithWrappedException(h0, ex);
2907		rs[0].assertNotInvoked();
2908		}
2909		try {
2910	<	assertEquals(null, h1.join());
2910	>	assertNull(h1.join());
2911		rs[1].assertInvoked();
2912		} catch (CompletionException ok) {
2913		checkCompletedWithWrappedException(h1, ex);
2914		rs[1].assertNotInvoked();
2915		}
2916		try {
2917	<	assertEquals(null, h2.join());
2917	>	assertNull(h2.join());
2918		rs[2].assertInvoked();
2919		} catch (CompletionException ok) {
2920		checkCompletedWithWrappedException(h2, ex);
2921		rs[2].assertNotInvoked();
2922		}
2923		try {
2924	<	assertEquals(null, h3.join());
2924	>	assertNull(h3.join());
2925		rs[3].assertInvoked();
2926		} catch (CompletionException ok) {
2927		checkCompletedWithWrappedException(h3, ex);
#	Line 3003 | Line 3118 | public class CompletableFutureTest exten
3118		case 0:
3119		assertTrue(f.complete(v1));
3120		assertTrue(g.completeExceptionally(ex));
3121	<	h = m.thenCompose(f, (x -> g));
3121	>	h = m.thenCompose(f, x -> g);
3122		break;
3123		case 1:
3124		assertTrue(f.complete(v1));
3125	<	h = m.thenCompose(f, (x -> g));
3125	>	h = m.thenCompose(f, x -> g);
3126		assertTrue(g.completeExceptionally(ex));
3127		break;
3128		case 2:
3129		assertTrue(g.completeExceptionally(ex));
3130		assertTrue(f.complete(v1));
3131	<	h = m.thenCompose(f, (x -> g));
3131	>	h = m.thenCompose(f, x -> g);
3132		break;
3133		case 3:
3134		assertTrue(g.completeExceptionally(ex));
3135	<	h = m.thenCompose(f, (x -> g));
3135	>	h = m.thenCompose(f, x -> g);
3136		assertTrue(f.complete(v1));
3137		break;
3138		case 4:
3139	<	h = m.thenCompose(f, (x -> g));
3139	>	h = m.thenCompose(f, x -> g);
3140		assertTrue(f.complete(v1));
3141		assertTrue(g.completeExceptionally(ex));
3142		break;
3143		case 5:
3144	<	h = m.thenCompose(f, (x -> g));
3144	>	h = m.thenCompose(f, x -> g);
3145		assertTrue(f.complete(v1));
3146		assertTrue(g.completeExceptionally(ex));
3147		break;
#	Line 3038 | Line 3153 | public class CompletableFutureTest exten
3153		checkCompletedNormally(f, v1);
3154		}}
3155
3156	+	/**
3157	+	* exceptionallyCompose result completes normally after normal
3158	+	* completion of source
3159	+	*/
3160	+	public void testExceptionallyCompose_normalCompletion() {
3161	+	for (ExecutionMode m : ExecutionMode.values())
3162	+	for (boolean createIncomplete : new boolean[] { true, false })
3163	+	for (Integer v1 : new Integer[] { 1, null })
3164	+	{
3165	+	final CompletableFuture<Integer> f = new CompletableFuture<>();
3166	+	final ExceptionalCompletableFutureFunction r =
3167	+	new ExceptionalCompletableFutureFunction(m);
3168	+	if (!createIncomplete) assertTrue(f.complete(v1));
3169	+	final CompletableFuture<Integer> g = m.exceptionallyCompose(f, r);
3170	+	if (createIncomplete) assertTrue(f.complete(v1));
3171	+
3172	+	checkCompletedNormally(f, v1);
3173	+	checkCompletedNormally(g, v1);
3174	+	r.assertNotInvoked();
3175	+	}}
3176	+
3177	+	/**
3178	+	* exceptionallyCompose result completes normally after exceptional
3179	+	* completion of source
3180	+	*/
3181	+	public void testExceptionallyCompose_exceptionalCompletion() {
3182	+	for (ExecutionMode m : ExecutionMode.values())
3183	+	for (boolean createIncomplete : new boolean[] { true, false })
3184	+	{
3185	+	final CFException ex = new CFException();
3186	+	final ExceptionalCompletableFutureFunction r =
3187	+	new ExceptionalCompletableFutureFunction(m);
3188	+	final CompletableFuture<Integer> f = new CompletableFuture<>();
3189	+	if (!createIncomplete) f.completeExceptionally(ex);
3190	+	final CompletableFuture<Integer> g = m.exceptionallyCompose(f, r);
3191	+	if (createIncomplete) f.completeExceptionally(ex);
3192	+
3193	+	checkCompletedExceptionally(f, ex);
3194	+	checkCompletedNormally(g, r.value);
3195	+	r.assertInvoked();
3196	+	}}
3197	+
3198	+	/**
3199	+	* exceptionallyCompose completes exceptionally on exception if action does
3200	+	*/
3201	+	public void testExceptionallyCompose_actionFailed() {
3202	+	for (ExecutionMode m : ExecutionMode.values())
3203	+	for (boolean createIncomplete : new boolean[] { true, false })
3204	+	{
3205	+	final CFException ex = new CFException();
3206	+	final CompletableFuture<Integer> f = new CompletableFuture<>();
3207	+	final FailingExceptionalCompletableFutureFunction r
3208	+	= new FailingExceptionalCompletableFutureFunction(m);
3209	+	if (!createIncomplete) f.completeExceptionally(ex);
3210	+	final CompletableFuture<Integer> g = m.exceptionallyCompose(f, r);
3211	+	if (createIncomplete) f.completeExceptionally(ex);
3212	+
3213	+	checkCompletedExceptionally(f, ex);
3214	+	checkCompletedWithWrappedException(g, r.ex);
3215	+	r.assertInvoked();
3216	+	}}
3217	+
3218	+	/**
3219	+	* exceptionallyCompose result completes exceptionally if the
3220	+	* result of the action does
3221	+	*/
3222	+	public void testExceptionallyCompose_actionReturnsFailingFuture() {
3223	+	for (ExecutionMode m : ExecutionMode.values())
3224	+	for (int order = 0; order < 6; order++)
3225	+	{
3226	+	final CFException ex0 = new CFException();
3227	+	final CFException ex = new CFException();
3228	+	final CompletableFuture<Integer> f = new CompletableFuture<>();
3229	+	final CompletableFuture<Integer> g = new CompletableFuture<>();
3230	+	final CompletableFuture<Integer> h;
3231	+	// Test all permutations of orders
3232	+	switch (order) {
3233	+	case 0:
3234	+	assertTrue(f.completeExceptionally(ex0));
3235	+	assertTrue(g.completeExceptionally(ex));
3236	+	h = m.exceptionallyCompose(f, x -> g);
3237	+	break;
3238	+	case 1:
3239	+	assertTrue(f.completeExceptionally(ex0));
3240	+	h = m.exceptionallyCompose(f, x -> g);
3241	+	assertTrue(g.completeExceptionally(ex));
3242	+	break;
3243	+	case 2:
3244	+	assertTrue(g.completeExceptionally(ex));
3245	+	assertTrue(f.completeExceptionally(ex0));
3246	+	h = m.exceptionallyCompose(f, x -> g);
3247	+	break;
3248	+	case 3:
3249	+	assertTrue(g.completeExceptionally(ex));
3250	+	h = m.exceptionallyCompose(f, x -> g);
3251	+	assertTrue(f.completeExceptionally(ex0));
3252	+	break;
3253	+	case 4:
3254	+	h = m.exceptionallyCompose(f, x -> g);
3255	+	assertTrue(f.completeExceptionally(ex0));
3256	+	assertTrue(g.completeExceptionally(ex));
3257	+	break;
3258	+	case 5:
3259	+	h = m.exceptionallyCompose(f, x -> g);
3260	+	assertTrue(f.completeExceptionally(ex0));
3261	+	assertTrue(g.completeExceptionally(ex));
3262	+	break;
3263	+	default: throw new AssertionError();
3264	+	}
3265	+
3266	+	checkCompletedExceptionally(g, ex);
3267	+	checkCompletedWithWrappedException(h, ex);
3268	+	checkCompletedExceptionally(f, ex0);
3269	+	}}
3270	+
3271		// other static methods
3272
3273		/**
#	Line 3201 | Line 3431 | public class CompletableFutureTest exten
3431		/**
3432		* Completion methods throw NullPointerException with null arguments
3433		*/
3434	+	@SuppressWarnings("FutureReturnValueIgnored")
3435		public void testNPE() {
3436		CompletableFuture<Integer> f = new CompletableFuture<>();
3437		CompletableFuture<Integer> g = new CompletableFuture<>();
3438		CompletableFuture<Integer> nullFuture = (CompletableFuture<Integer>)null;
3439		ThreadExecutor exec = new ThreadExecutor();
3440
3441	<	Runnable[] throwingActions = {
3441	>	assertThrows(
3442	>	NullPointerException.class,
3443	>
3444		() -> CompletableFuture.supplyAsync(null),
3445		() -> CompletableFuture.supplyAsync(null, exec),
3446		() -> CompletableFuture.supplyAsync(new IntegerSupplier(ExecutionMode.SYNC, 42), null),
#	Line 3220 | Line 3453 | public class CompletableFutureTest exten
3453
3454		() -> f.thenApply(null),
3455		() -> f.thenApplyAsync(null),
3456	<	() -> f.thenApplyAsync((x) -> x, null),
3456	>	() -> f.thenApplyAsync(x -> x, null),
3457		() -> f.thenApplyAsync(null, exec),
3458
3459		() -> f.thenAccept(null),
3460		() -> f.thenAcceptAsync(null),
3461	<	() -> f.thenAcceptAsync((x) -> {} , null),
3461	>	() -> f.thenAcceptAsync(x -> {} , null),
3462		() -> f.thenAcceptAsync(null, exec),
3463
3464		() -> f.thenRun(null),
#	Line 3260 | Line 3493 | public class CompletableFutureTest exten
3493		() -> f.applyToEither(g, null),
3494		() -> f.applyToEitherAsync(g, null),
3495		() -> f.applyToEitherAsync(g, null, exec),
3496	<	() -> f.applyToEither(nullFuture, (x) -> x),
3497	<	() -> f.applyToEitherAsync(nullFuture, (x) -> x),
3498	<	() -> f.applyToEitherAsync(nullFuture, (x) -> x, exec),
3499	<	() -> f.applyToEitherAsync(g, (x) -> x, null),
3496	>	() -> f.applyToEither(nullFuture, x -> x),
3497	>	() -> f.applyToEitherAsync(nullFuture, x -> x),
3498	>	() -> f.applyToEitherAsync(nullFuture, x -> x, exec),
3499	>	() -> f.applyToEitherAsync(g, x -> x, null),
3500
3501		() -> f.acceptEither(g, null),
3502		() -> f.acceptEitherAsync(g, null),
3503		() -> f.acceptEitherAsync(g, null, exec),
3504	<	() -> f.acceptEither(nullFuture, (x) -> {}),
3505	<	() -> f.acceptEitherAsync(nullFuture, (x) -> {}),
3506	<	() -> f.acceptEitherAsync(nullFuture, (x) -> {}, exec),
3507	<	() -> f.acceptEitherAsync(g, (x) -> {}, null),
3504	>	() -> f.acceptEither(nullFuture, x -> {}),
3505	>	() -> f.acceptEitherAsync(nullFuture, x -> {}),
3506	>	() -> f.acceptEitherAsync(nullFuture, x -> {}, exec),
3507	>	() -> f.acceptEitherAsync(g, x -> {}, null),
3508
3509		() -> f.runAfterEither(g, null),
3510		() -> f.runAfterEitherAsync(g, null),
#	Line 3310 | Line 3543 | public class CompletableFutureTest exten
3543		() -> f.completeOnTimeout(42, 1L, null),
3544
3545		() -> CompletableFuture.failedFuture(null),
3546	<	() -> CompletableFuture.failedStage(null),
3314	<	};
3546	>	() -> CompletableFuture.failedStage(null));
3547
3316	–	assertThrows(NullPointerException.class, throwingActions);
3548		assertEquals(0, exec.count.get());
3549		}
3550
3320	–	static class CountingRejectingExecutor implements Executor {
3321	–	final RejectedExecutionException ex = new RejectedExecutionException();
3322	–	final AtomicInteger count = new AtomicInteger(0);
3323	–	public void execute(Runnable r) {
3324	–	count.getAndIncrement();
3325	–	throw ex;
3326	–	}
3327	–	}
3328	–
3551		/**
3552		* Test submissions to an executor that rejects all tasks.
3553		*/
3554		public void testRejectingExecutor() {
3555	<	for (Integer v : new Integer[] { 1, null }) {
3556	<
3555	>	for (Integer v : new Integer[] { 1, null })
3556	>	{
3557		final CountingRejectingExecutor e = new CountingRejectingExecutor();
3558
3559		final CompletableFuture<Integer> complete = CompletableFuture.completedFuture(v);
#	Line 3346 | Line 3568 | public class CompletableFutureTest exten
3568		for (CompletableFuture<Integer> src : srcs) {
3569		List<CompletableFuture<?>> fs = new ArrayList<>();
3570		fs.add(src.thenRunAsync(() -> {}, e));
3571	<	fs.add(src.thenAcceptAsync((z) -> {}, e));
3572	<	fs.add(src.thenApplyAsync((z) -> z, e));
3571	>	fs.add(src.thenAcceptAsync(z -> {}, e));
3572	>	fs.add(src.thenApplyAsync(z -> z, e));
3573
3574		fs.add(src.thenCombineAsync(src, (x, y) -> x, e));
3575		fs.add(src.thenAcceptBothAsync(src, (x, y) -> {}, e));
3576		fs.add(src.runAfterBothAsync(src, () -> {}, e));
3577
3578	<	fs.add(src.applyToEitherAsync(src, (z) -> z, e));
3579	<	fs.add(src.acceptEitherAsync(src, (z) -> {}, e));
3578	>	fs.add(src.applyToEitherAsync(src, z -> z, e));
3579	>	fs.add(src.acceptEitherAsync(src, z -> {}, e));
3580		fs.add(src.runAfterEitherAsync(src, () -> {}, e));
3581
3582	<	fs.add(src.thenComposeAsync((z) -> null, e));
3582	>	fs.add(src.thenComposeAsync(z -> null, e));
3583		fs.add(src.whenCompleteAsync((z, t) -> {}, e));
3584		fs.add(src.handleAsync((z, t) -> null, e));
3585
#	Line 3390 | Line 3612 | public class CompletableFutureTest exten
3612		{
3613		List<CompletableFuture<?>> fs = new ArrayList<>();
3614
3615	<	fs.add(complete.applyToEitherAsync(incomplete, (z) -> z, e));
3616	<	fs.add(incomplete.applyToEitherAsync(complete, (z) -> z, e));
3615	>	fs.add(complete.applyToEitherAsync(incomplete, z -> z, e));
3616	>	fs.add(incomplete.applyToEitherAsync(complete, z -> z, e));
3617
3618	<	fs.add(complete.acceptEitherAsync(incomplete, (z) -> {}, e));
3619	<	fs.add(incomplete.acceptEitherAsync(complete, (z) -> {}, e));
3618	>	fs.add(complete.acceptEitherAsync(incomplete, z -> {}, e));
3619	>	fs.add(incomplete.acceptEitherAsync(complete, z -> {}, e));
3620
3621		fs.add(complete.runAfterEitherAsync(incomplete, () -> {}, e));
3622		fs.add(incomplete.runAfterEitherAsync(complete, () -> {}, e));
#	Line 3410 | Line 3632 | public class CompletableFutureTest exten
3632		checkCompletedWithWrappedException(future, e.ex);
3633
3634		assertEquals(futures.size(), e.count.get());
3635	<
3414	<	}
3415	<	}
3635	>	}}
3636
3637		/**
3638		* Test submissions to an executor that rejects all tasks, but
#	Line 3420 | Line 3640 | public class CompletableFutureTest exten
3640		* explicitly completed.
3641		*/
3642		public void testRejectingExecutorNeverInvoked() {
3643	+	for (Integer v : new Integer[] { 1, null })
3644	+	{
3645		final CountingRejectingExecutor e = new CountingRejectingExecutor();
3646
3425	–	for (Integer v : new Integer[] { 1, null }) {
3426	–
3647		final CompletableFuture<Integer> complete = CompletableFuture.completedFuture(v);
3648		final CompletableFuture<Integer> incomplete = new CompletableFuture<>();
3649
3430	–	List<CompletableFuture<?>> futures = new ArrayList<>();
3431	–
3432	–	List<CompletableFuture<Integer>> srcs = new ArrayList<>();
3433	–	srcs.add(complete);
3434	–	srcs.add(incomplete);
3435	–
3650		List<CompletableFuture<?>> fs = new ArrayList<>();
3651		fs.add(incomplete.thenRunAsync(() -> {}, e));
3652	<	fs.add(incomplete.thenAcceptAsync((z) -> {}, e));
3653	<	fs.add(incomplete.thenApplyAsync((z) -> z, e));
3652	>	fs.add(incomplete.thenAcceptAsync(z -> {}, e));
3653	>	fs.add(incomplete.thenApplyAsync(z -> z, e));
3654
3655		fs.add(incomplete.thenCombineAsync(incomplete, (x, y) -> x, e));
3656		fs.add(incomplete.thenAcceptBothAsync(incomplete, (x, y) -> {}, e));
3657		fs.add(incomplete.runAfterBothAsync(incomplete, () -> {}, e));
3658
3659	<	fs.add(incomplete.applyToEitherAsync(incomplete, (z) -> z, e));
3660	<	fs.add(incomplete.acceptEitherAsync(incomplete, (z) -> {}, e));
3659	>	fs.add(incomplete.applyToEitherAsync(incomplete, z -> z, e));
3660	>	fs.add(incomplete.acceptEitherAsync(incomplete, z -> {}, e));
3661		fs.add(incomplete.runAfterEitherAsync(incomplete, () -> {}, e));
3662
3663	<	fs.add(incomplete.thenComposeAsync((z) -> null, e));
3663	>	fs.add(incomplete.thenComposeAsync(z -> null, e));
3664		fs.add(incomplete.whenCompleteAsync((z, t) -> {}, e));
3665		fs.add(incomplete.handleAsync((z, t) -> null, e));
3666
#	Line 3471 | Line 3685 | public class CompletableFutureTest exten
3685		checkCompletedNormally(future, null);
3686
3687		assertEquals(0, e.count.get());
3688	<
3475	<	}
3476	<	}
3688	>	}}
3689
3690		/**
3691		* toCompletableFuture returns this CompletableFuture.
#	Line 3508 | Line 3720 | public class CompletableFutureTest exten
3720		*/
3721		public void testCompletedStage() {
3722		AtomicInteger x = new AtomicInteger(0);
3723	<	AtomicReference<Throwable> r = new AtomicReference<Throwable>();
3723	>	AtomicReference<Throwable> r = new AtomicReference<>();
3724		CompletionStage<Integer> f = CompletableFuture.completedStage(1);
3725		f.whenComplete((v, e) -> {if (e != null) r.set(e); else x.set(v);});
3726		assertEquals(x.get(), 1);
#	Line 3540 | Line 3752 | public class CompletableFutureTest exten
3752		}
3753
3754		/**
3543	–	* failedFuture(null) throws NPE
3544	–	*/
3545	–	public void testFailedFuture_null() {
3546	–	try {
3547	–	CompletableFuture<Integer> f = CompletableFuture.failedFuture(null);
3548	–	shouldThrow();
3549	–	} catch (NullPointerException success) {}
3550	–	}
3551	–
3552	–	/**
3755		* copy returns a CompletableFuture that is completed normally,
3756		* with the same value, when source is.
3757		*/
3758	<	public void testCopy() {
3758	>	public void testCopy_normalCompletion() {
3759	>	for (boolean createIncomplete : new boolean[] { true, false })
3760	>	for (Integer v1 : new Integer[] { 1, null })
3761	>	{
3762		CompletableFuture<Integer> f = new CompletableFuture<>();
3763	+	if (!createIncomplete) assertTrue(f.complete(v1));
3764		CompletableFuture<Integer> g = f.copy();
3765	<	checkIncomplete(f);
3766	<	checkIncomplete(g);
3767	<	f.complete(1);
3768	<	checkCompletedNormally(f, 1);
3769	<	checkCompletedNormally(g, 1);
3770	<	}
3765	>	if (createIncomplete) {
3766	>	checkIncomplete(f);
3767	>	checkIncomplete(g);
3768	>	assertTrue(f.complete(v1));
3769	>	}
3770	>	checkCompletedNormally(f, v1);
3771	>	checkCompletedNormally(g, v1);
3772	>	}}
3773
3774		/**
3775		* copy returns a CompletableFuture that is completed exceptionally
3776		* when source is.
3777		*/
3778	<	public void testCopy2() {
3778	>	public void testCopy_exceptionalCompletion() {
3779	>	for (boolean createIncomplete : new boolean[] { true, false })
3780	>	{
3781	>	CFException ex = new CFException();
3782		CompletableFuture<Integer> f = new CompletableFuture<>();
3783	+	if (!createIncomplete) f.completeExceptionally(ex);
3784		CompletableFuture<Integer> g = f.copy();
3785	<	checkIncomplete(f);
3786	<	checkIncomplete(g);
3787	<	CFException ex = new CFException();
3788	<	f.completeExceptionally(ex);
3785	>	if (createIncomplete) {
3786	>	checkIncomplete(f);
3787	>	checkIncomplete(g);
3788	>	f.completeExceptionally(ex);
3789	>	}
3790		checkCompletedExceptionally(f, ex);
3791		checkCompletedWithWrappedException(g, ex);
3792	+	}}
3793	+
3794	+	/**
3795	+	* Completion of a copy does not complete its source.
3796	+	*/
3797	+	public void testCopy_oneWayPropagation() {
3798	+	CompletableFuture<Integer> f = new CompletableFuture<>();
3799	+	assertTrue(f.copy().complete(1));
3800	+	assertTrue(f.copy().complete(null));
3801	+	assertTrue(f.copy().cancel(true));
3802	+	assertTrue(f.copy().cancel(false));
3803	+	assertTrue(f.copy().completeExceptionally(new CFException()));
3804	+	checkIncomplete(f);
3805		}
3806
3807		/**
#	Line 3586 | Line 3812 | public class CompletableFutureTest exten
3812		CompletableFuture<Integer> f = new CompletableFuture<>();
3813		CompletionStage<Integer> g = f.minimalCompletionStage();
3814		AtomicInteger x = new AtomicInteger(0);
3815	<	AtomicReference<Throwable> r = new AtomicReference<Throwable>();
3815	>	AtomicReference<Throwable> r = new AtomicReference<>();
3816		checkIncomplete(f);
3817		g.whenComplete((v, e) -> {if (e != null) r.set(e); else x.set(v);});
3818		f.complete(1);
#	Line 3603 | Line 3829 | public class CompletableFutureTest exten
3829		CompletableFuture<Integer> f = new CompletableFuture<>();
3830		CompletionStage<Integer> g = f.minimalCompletionStage();
3831		AtomicInteger x = new AtomicInteger(0);
3832	<	AtomicReference<Throwable> r = new AtomicReference<Throwable>();
3832	>	AtomicReference<Throwable> r = new AtomicReference<>();
3833		g.whenComplete((v, e) -> {if (e != null) r.set(e); else x.set(v);});
3834		checkIncomplete(f);
3835		CFException ex = new CFException();
#	Line 3621 | Line 3847 | public class CompletableFutureTest exten
3847		CFException ex = new CFException();
3848		CompletionStage<Integer> f = CompletableFuture.failedStage(ex);
3849		AtomicInteger x = new AtomicInteger(0);
3850	<	AtomicReference<Throwable> r = new AtomicReference<Throwable>();
3850	>	AtomicReference<Throwable> r = new AtomicReference<>();
3851		f.whenComplete((v, e) -> {if (e != null) r.set(e); else x.set(v);});
3852		assertEquals(x.get(), 0);
3853		assertEquals(r.get(), ex);
#	Line 3645 | Line 3871 | public class CompletableFutureTest exten
3871		public void testCompleteAsync2() {
3872		CompletableFuture<Integer> f = new CompletableFuture<>();
3873		CFException ex = new CFException();
3874	<	f.completeAsync(() -> {if (true) throw ex; return 1;});
3874	>	f.completeAsync(() -> { throw ex; });
3875		try {
3876		f.join();
3877		shouldThrow();
#	Line 3675 | Line 3901 | public class CompletableFutureTest exten
3901		CompletableFuture<Integer> f = new CompletableFuture<>();
3902		CFException ex = new CFException();
3903		ThreadExecutor executor = new ThreadExecutor();
3904	<	f.completeAsync(() -> {if (true) throw ex; return 1;}, executor);
3904	>	f.completeAsync(() -> { throw ex; }, executor);
3905		try {
3906		f.join();
3907		shouldThrow();
#	Line 3827 | Line 4053 | public class CompletableFutureTest exten
4053		final CompletableFuture<Integer> v42 = CompletableFuture.completedFuture(42);
4054		final CompletableFuture<Integer> incomplete = new CompletableFuture<>();
4055
4056	+	final Runnable noopRunnable = new Noop(m);
4057	+	final Consumer<Integer> noopConsumer = new NoopConsumer(m);
4058	+	final Function<Integer, Integer> incFunction = new IncFunction(m);
4059	+
4060		List<Function<CompletableFuture<Integer>, CompletableFuture<?>>> funs
4061		= new ArrayList<>();
4062
4063	<	funs.add((y) -> m.thenRun(y, new Noop(m)));
4064	<	funs.add((y) -> m.thenAccept(y, new NoopConsumer(m)));
4065	<	funs.add((y) -> m.thenApply(y, new IncFunction(m)));
4066	<
4067	<	funs.add((y) -> m.runAfterEither(y, incomplete, new Noop(m)));
4068	<	funs.add((y) -> m.acceptEither(y, incomplete, new NoopConsumer(m)));
4069	<	funs.add((y) -> m.applyToEither(y, incomplete, new IncFunction(m)));
4070	<
4071	<	funs.add((y) -> m.runAfterBoth(y, v42, new Noop(m)));
4072	<	funs.add((y) -> m.runAfterBoth(v42, y, new Noop(m)));
4073	<	funs.add((y) -> m.thenAcceptBoth(y, v42, new SubtractAction(m)));
4074	<	funs.add((y) -> m.thenAcceptBoth(v42, y, new SubtractAction(m)));
4075	<	funs.add((y) -> m.thenCombine(y, v42, new SubtractFunction(m)));
4076	<	funs.add((y) -> m.thenCombine(v42, y, new SubtractFunction(m)));
4077	<
4078	<	funs.add((y) -> m.whenComplete(y, (Integer r, Throwable t) -> {}));
4079	<
4080	<	funs.add((y) -> m.thenCompose(y, new CompletableFutureInc(m)));
4081	<
4082	<	funs.add((y) -> CompletableFuture.allOf(new CompletableFuture<?>[] {y}));
4083	<	funs.add((y) -> CompletableFuture.allOf(new CompletableFuture<?>[] {y, v42}));
4084	<	funs.add((y) -> CompletableFuture.allOf(new CompletableFuture<?>[] {v42, y}));
4085	<	funs.add((y) -> CompletableFuture.anyOf(new CompletableFuture<?>[] {y}));
4086	<	funs.add((y) -> CompletableFuture.anyOf(new CompletableFuture<?>[] {y, incomplete}));
4087	<	funs.add((y) -> CompletableFuture.anyOf(new CompletableFuture<?>[] {incomplete, y}));
4063	>	funs.add(y -> m.thenRun(y, noopRunnable));
4064	>	funs.add(y -> m.thenAccept(y, noopConsumer));
4065	>	funs.add(y -> m.thenApply(y, incFunction));
4066	>
4067	>	funs.add(y -> m.runAfterEither(y, incomplete, noopRunnable));
4068	>	funs.add(y -> m.acceptEither(y, incomplete, noopConsumer));
4069	>	funs.add(y -> m.applyToEither(y, incomplete, incFunction));
4070	>
4071	>	funs.add(y -> m.runAfterBoth(y, v42, noopRunnable));
4072	>	funs.add(y -> m.runAfterBoth(v42, y, noopRunnable));
4073	>	funs.add(y -> m.thenAcceptBoth(y, v42, new SubtractAction(m)));
4074	>	funs.add(y -> m.thenAcceptBoth(v42, y, new SubtractAction(m)));
4075	>	funs.add(y -> m.thenCombine(y, v42, new SubtractFunction(m)));
4076	>	funs.add(y -> m.thenCombine(v42, y, new SubtractFunction(m)));
4077	>
4078	>	funs.add(y -> m.whenComplete(y, (Integer r, Throwable t) -> {}));
4079	>
4080	>	funs.add(y -> m.thenCompose(y, new CompletableFutureInc(m)));
4081	>
4082	>	funs.add(y -> CompletableFuture.allOf(y));
4083	>	funs.add(y -> CompletableFuture.allOf(y, v42));
4084	>	funs.add(y -> CompletableFuture.allOf(v42, y));
4085	>	funs.add(y -> CompletableFuture.anyOf(y));
4086	>	funs.add(y -> CompletableFuture.anyOf(y, incomplete));
4087	>	funs.add(y -> CompletableFuture.anyOf(incomplete, y));
4088
4089		for (Function<CompletableFuture<Integer>, CompletableFuture<?>>
4090		fun : funs) {
4091		CompletableFuture<Integer> f = new CompletableFuture<>();
4092		f.completeExceptionally(ex);
4093	<	CompletableFuture<Integer> src = m.thenApply(f, new IncFunction(m));
4093	>	CompletableFuture<Integer> src = m.thenApply(f, incFunction);
4094		checkCompletedWithWrappedException(src, ex);
4095		CompletableFuture<?> dep = fun.apply(src);
4096		checkCompletedWithWrappedException(dep, ex);
#	Line 3870 | Line 4100 | public class CompletableFutureTest exten
4100		for (Function<CompletableFuture<Integer>, CompletableFuture<?>>
4101		fun : funs) {
4102		CompletableFuture<Integer> f = new CompletableFuture<>();
4103	<	CompletableFuture<Integer> src = m.thenApply(f, new IncFunction(m));
4103	>	CompletableFuture<Integer> src = m.thenApply(f, incFunction);
4104		CompletableFuture<?> dep = fun.apply(src);
4105		f.completeExceptionally(ex);
4106		checkCompletedWithWrappedException(src, ex);
#	Line 3884 | Line 4114 | public class CompletableFutureTest exten
4114		CompletableFuture<Integer> f = new CompletableFuture<>();
4115		f.cancel(mayInterruptIfRunning);
4116		checkCancelled(f);
4117	<	CompletableFuture<Integer> src = m.thenApply(f, new IncFunction(m));
4117	>	CompletableFuture<Integer> src = m.thenApply(f, incFunction);
4118		checkCompletedWithWrappedCancellationException(src);
4119		CompletableFuture<?> dep = fun.apply(src);
4120		checkCompletedWithWrappedCancellationException(dep);
#	Line 3895 | Line 4125 | public class CompletableFutureTest exten
4125		for (Function<CompletableFuture<Integer>, CompletableFuture<?>>
4126		fun : funs) {
4127		CompletableFuture<Integer> f = new CompletableFuture<>();
4128	<	CompletableFuture<Integer> src = m.thenApply(f, new IncFunction(m));
4128	>	CompletableFuture<Integer> src = m.thenApply(f, incFunction);
4129		CompletableFuture<?> dep = fun.apply(src);
4130		f.cancel(mayInterruptIfRunning);
4131		checkCancelled(f);
#	Line 3906 | Line 4136 | public class CompletableFutureTest exten
4136		}}
4137
4138		/**
4139	<	* Minimal completion stages throw UOE for all non-CompletionStage methods
4139	>	* Minimal completion stages throw UOE for most non-CompletionStage methods
4140		*/
4141		public void testMinimalCompletionStage_minimality() {
4142		if (!testImplementationDetails) return;
4143		Function<Method, String> toSignature =
4144	<	(method) -> method.getName() + Arrays.toString(method.getParameterTypes());
4144	>	method -> method.getName() + Arrays.toString(method.getParameterTypes());
4145		Predicate<Method> isNotStatic =
4146	<	(method) -> (method.getModifiers() & Modifier.STATIC) == 0;
4146	>	method -> (method.getModifiers() & Modifier.STATIC) == 0;
4147		List<Method> minimalMethods =
4148		Stream.of(Object.class, CompletionStage.class)
4149	<	.flatMap((klazz) -> Stream.of(klazz.getMethods()))
4149	>	.flatMap(klazz -> Stream.of(klazz.getMethods()))
4150		.filter(isNotStatic)
4151		.collect(Collectors.toList());
4152		// Methods from CompletableFuture permitted NOT to throw UOE
#	Line 3932 | Line 4162 | public class CompletableFutureTest exten
4162		.collect(Collectors.toSet());
4163		List<Method> allMethods = Stream.of(CompletableFuture.class.getMethods())
4164		.filter(isNotStatic)
4165	<	.filter((method) -> !permittedMethodSignatures.contains(toSignature.apply(method)))
4165	>	.filter(method -> !permittedMethodSignatures.contains(toSignature.apply(method)))
4166		.collect(Collectors.toList());
4167
4168	<	CompletionStage<Integer> minimalStage =
4168	>	List<CompletionStage<Integer>> stages = new ArrayList<>();
4169	>	CompletionStage<Integer> min =
4170		new CompletableFuture<Integer>().minimalCompletionStage();
4171	+	stages.add(min);
4172	+	stages.add(min.thenApply(x -> x));
4173	+	stages.add(CompletableFuture.completedStage(1));
4174	+	stages.add(CompletableFuture.failedStage(new CFException()));
4175
4176		List<Method> bugs = new ArrayList<>();
4177		for (Method method : allMethods) {
#	Line 3945 | Line 4180 | public class CompletableFutureTest exten
4180		// Manufacture boxed primitives for primitive params
4181		for (int i = 0; i < args.length; i++) {
4182		Class<?> type = parameterTypes[i];
4183	<	if (parameterTypes[i] == boolean.class)
4184	<	args[i] = false;
4185	<	else if (parameterTypes[i] == int.class)
3951	<	args[i] = 0;
3952	<	else if (parameterTypes[i] == long.class)
3953	<	args[i] = 0L;
4183	>	if      (type == boolean.class) args[i] = false;
4184	>	else if (type == int.class)     args[i] = 0;
4185	>	else if (type == long.class)    args[i] = 0L;
4186		}
4187	<	try {
4188	<	method.invoke(minimalStage, args);
4189	<	bugs.add(method);
3958	<	}
3959	<	catch (java.lang.reflect.InvocationTargetException expected) {
3960	<	if (! (expected.getCause() instanceof UnsupportedOperationException)) {
4187	>	for (CompletionStage<Integer> stage : stages) {
4188	>	try {
4189	>	method.invoke(stage, args);
4190		bugs.add(method);
3962	–	// expected.getCause().printStackTrace();
4191		}
4192	+	catch (java.lang.reflect.InvocationTargetException expected) {
4193	+	if (! (expected.getCause() instanceof UnsupportedOperationException)) {
4194	+	bugs.add(method);
4195	+	// expected.getCause().printStackTrace();
4196	+	}
4197	+	}
4198	+	catch (ReflectiveOperationException bad) { throw new Error(bad); }
4199		}
3965	–	catch (ReflectiveOperationException bad) { throw new Error(bad); }
4200		}
4201		if (!bugs.isEmpty())
4202	<	throw new Error("Methods did not throw UOE: " + bugs.toString());
4202	>	throw new Error("Methods did not throw UOE: " + bugs);
4203	>	}
4204	>
4205	>	/**
4206	>	* minimalStage.toCompletableFuture() returns a CompletableFuture that
4207	>	* is completed normally, with the same value, when source is.
4208	>	*/
4209	>	public void testMinimalCompletionStage_toCompletableFuture_normalCompletion() {
4210	>	for (boolean createIncomplete : new boolean[] { true, false })
4211	>	for (Integer v1 : new Integer[] { 1, null })
4212	>	{
4213	>	CompletableFuture<Integer> f = new CompletableFuture<>();
4214	>	CompletionStage<Integer> minimal = f.minimalCompletionStage();
4215	>	if (!createIncomplete) assertTrue(f.complete(v1));
4216	>	CompletableFuture<Integer> g = minimal.toCompletableFuture();
4217	>	if (createIncomplete) {
4218	>	checkIncomplete(f);
4219	>	checkIncomplete(g);
4220	>	assertTrue(f.complete(v1));
4221	>	}
4222	>	checkCompletedNormally(f, v1);
4223	>	checkCompletedNormally(g, v1);
4224	>	}}
4225	>
4226	>	/**
4227	>	* minimalStage.toCompletableFuture() returns a CompletableFuture that
4228	>	* is completed exceptionally when source is.
4229	>	*/
4230	>	public void testMinimalCompletionStage_toCompletableFuture_exceptionalCompletion() {
4231	>	for (boolean createIncomplete : new boolean[] { true, false })
4232	>	{
4233	>	CFException ex = new CFException();
4234	>	CompletableFuture<Integer> f = new CompletableFuture<>();
4235	>	CompletionStage<Integer> minimal = f.minimalCompletionStage();
4236	>	if (!createIncomplete) f.completeExceptionally(ex);
4237	>	CompletableFuture<Integer> g = minimal.toCompletableFuture();
4238	>	if (createIncomplete) {
4239	>	checkIncomplete(f);
4240	>	checkIncomplete(g);
4241	>	f.completeExceptionally(ex);
4242	>	}
4243	>	checkCompletedExceptionally(f, ex);
4244	>	checkCompletedWithWrappedException(g, ex);
4245	>	}}
4246	>
4247	>	/**
4248	>	* minimalStage.toCompletableFuture() gives mutable CompletableFuture
4249	>	*/
4250	>	public void testMinimalCompletionStage_toCompletableFuture_mutable() {
4251	>	for (Integer v1 : new Integer[] { 1, null })
4252	>	{
4253	>	CompletableFuture<Integer> f = new CompletableFuture<>();
4254	>	CompletionStage minimal = f.minimalCompletionStage();
4255	>	CompletableFuture<Integer> g = minimal.toCompletableFuture();
4256	>	assertTrue(g.complete(v1));
4257	>	checkCompletedNormally(g, v1);
4258	>	checkIncomplete(f);
4259	>	checkIncomplete(minimal.toCompletableFuture());
4260	>	}}
4261	>
4262	>	/**
4263	>	* minimalStage.toCompletableFuture().join() awaits completion
4264	>	*/
4265	>	public void testMinimalCompletionStage_toCompletableFuture_join() throws Exception {
4266	>	for (boolean createIncomplete : new boolean[] { true, false })
4267	>	for (Integer v1 : new Integer[] { 1, null })
4268	>	{
4269	>	CompletableFuture<Integer> f = new CompletableFuture<>();
4270	>	if (!createIncomplete) assertTrue(f.complete(v1));
4271	>	CompletionStage<Integer> minimal = f.minimalCompletionStage();
4272	>	if (createIncomplete) assertTrue(f.complete(v1));
4273	>	assertEquals(v1, minimal.toCompletableFuture().join());
4274	>	assertEquals(v1, minimal.toCompletableFuture().get());
4275	>	checkCompletedNormally(minimal.toCompletableFuture(), v1);
4276	>	}}
4277	>
4278	>	/**
4279	>	* Completion of a toCompletableFuture copy of a minimal stage
4280	>	* does not complete its source.
4281	>	*/
4282	>	public void testMinimalCompletionStage_toCompletableFuture_oneWayPropagation() {
4283	>	CompletableFuture<Integer> f = new CompletableFuture<>();
4284	>	CompletionStage<Integer> g = f.minimalCompletionStage();
4285	>	assertTrue(g.toCompletableFuture().complete(1));
4286	>	assertTrue(g.toCompletableFuture().complete(null));
4287	>	assertTrue(g.toCompletableFuture().cancel(true));
4288	>	assertTrue(g.toCompletableFuture().cancel(false));
4289	>	assertTrue(g.toCompletableFuture().completeExceptionally(new CFException()));
4290	>	checkIncomplete(g.toCompletableFuture());
4291	>	f.complete(1);
4292	>	checkCompletedNormally(g.toCompletableFuture(), 1);
4293	>	}
4294	>
4295	>	/** Demo utility method for external reliable toCompletableFuture */
4296	>	static <T> CompletableFuture<T> toCompletableFuture(CompletionStage<T> stage) {
4297	>	CompletableFuture<T> f = new CompletableFuture<>();
4298	>	stage.handle((T t, Throwable ex) -> {
4299	>	if (ex != null) f.completeExceptionally(ex);
4300	>	else f.complete(t);
4301	>	return null;
4302	>	});
4303	>	return f;
4304	>	}
4305	>
4306	>	/** Demo utility method to join a CompletionStage */
4307	>	static <T> T join(CompletionStage<T> stage) {
4308	>	return toCompletableFuture(stage).join();
4309		}
4310
4311	+	/**
4312	+	* Joining a minimal stage "by hand" works
4313	+	*/
4314	+	public void testMinimalCompletionStage_join_by_hand() {
4315	+	for (boolean createIncomplete : new boolean[] { true, false })
4316	+	for (Integer v1 : new Integer[] { 1, null })
4317	+	{
4318	+	CompletableFuture<Integer> f = new CompletableFuture<>();
4319	+	CompletionStage<Integer> minimal = f.minimalCompletionStage();
4320	+	CompletableFuture<Integer> g = new CompletableFuture<>();
4321	+	if (!createIncomplete) assertTrue(f.complete(v1));
4322	+	minimal.thenAccept(x -> g.complete(x));
4323	+	if (createIncomplete) assertTrue(f.complete(v1));
4324	+	g.join();
4325	+	checkCompletedNormally(g, v1);
4326	+	checkCompletedNormally(f, v1);
4327	+	assertEquals(v1, join(minimal));
4328	+	}}
4329	+
4330		static class Monad {
4331		static class ZeroException extends RuntimeException {
4332		public ZeroException() { super("monadic zero"); }
#	Line 3984 | Line 4343 | public class CompletableFutureTest exten
4343		static <T,U,V> Function<T, CompletableFuture<V>> compose
4344		(Function<T, CompletableFuture<U>> f,
4345		Function<U, CompletableFuture<V>> g) {
4346	<	return (x) -> f.apply(x).thenCompose(g);
4346	>	return x -> f.apply(x).thenCompose(g);
4347		}
4348
4349		static void assertZero(CompletableFuture<?> f) {
4350		try {
4351		f.getNow(null);
4352	<	throw new AssertionFailedError("should throw");
4352	>	throw new AssertionError("should throw");
4353		} catch (CompletionException success) {
4354		assertTrue(success.getCause() instanceof ZeroException);
4355		}
#	Line 4064 | Line 4423 | public class CompletableFutureTest exten
4423
4424		// Some mutually non-commutative functions
4425		Function<Long, CompletableFuture<Long>> triple
4426	<	= (x) -> Monad.unit(3 * x);
4426	>	= x -> Monad.unit(3 * x);
4427		Function<Long, CompletableFuture<Long>> inc
4428	<	= (x) -> Monad.unit(x + 1);
4428	>	= x -> Monad.unit(x + 1);
4429
4430		// unit is a right identity: m >>= unit === m
4431		Monad.assertFutureEquals(inc.apply(5L).thenCompose(unit),
#	Line 4078 | Line 4437 | public class CompletableFutureTest exten
4437		// associativity: (m >>= f) >>= g === m >>= ( \x -> (f x >>= g) )
4438		Monad.assertFutureEquals(
4439		unit.apply(5L).thenCompose(inc).thenCompose(triple),
4440	<	unit.apply(5L).thenCompose((x) -> inc.apply(x).thenCompose(triple)));
4440	>	unit.apply(5L).thenCompose(x -> inc.apply(x).thenCompose(triple)));
4441
4442		// The case for CompletableFuture as an additive monad is weaker...
4443
#	Line 4088 | Line 4447 | public class CompletableFutureTest exten
4447		// left zero: zero >>= f === zero
4448		Monad.assertZero(zero.thenCompose(inc));
4449		// right zero: f >>= (\x -> zero) === zero
4450	<	Monad.assertZero(inc.apply(5L).thenCompose((x) -> zero));
4450	>	Monad.assertZero(inc.apply(5L).thenCompose(x -> zero));
4451
4452		// f plus zero === f
4453		Monad.assertFutureEquals(Monad.unit(5L),
#	Line 4114 | Line 4473 | public class CompletableFutureTest exten
4473		Monad.plus(godot, Monad.unit(5L)));
4474		}
4475
4476	+	/** Test long recursive chains of CompletableFutures with cascading completions */
4477	+	@SuppressWarnings("FutureReturnValueIgnored")
4478	+	public void testRecursiveChains() throws Throwable {
4479	+	for (ExecutionMode m : ExecutionMode.values())
4480	+	for (boolean addDeadEnds : new boolean[] { true, false })
4481	+	{
4482	+	final int val = 42;
4483	+	final int n = expensiveTests ? 1_000 : 2;
4484	+	CompletableFuture<Integer> head = new CompletableFuture<>();
4485	+	CompletableFuture<Integer> tail = head;
4486	+	for (int i = 0; i < n; i++) {
4487	+	if (addDeadEnds) m.thenApply(tail, v -> v + 1);
4488	+	tail = m.thenApply(tail, v -> v + 1);
4489	+	if (addDeadEnds) m.applyToEither(tail, tail, v -> v + 1);
4490	+	tail = m.applyToEither(tail, tail, v -> v + 1);
4491	+	if (addDeadEnds) m.thenCombine(tail, tail, (v, w) -> v + 1);
4492	+	tail = m.thenCombine(tail, tail, (v, w) -> v + 1);
4493	+	}
4494	+	head.complete(val);
4495	+	assertEquals(val + 3 * n, (int) tail.join());
4496	+	}}
4497	+
4498		/**
4499		* A single CompletableFuture with many dependents.
4500		* A demo of scalability - runtime is O(n).
4501		*/
4502	+	@SuppressWarnings("FutureReturnValueIgnored")
4503		public void testManyDependents() throws Throwable {
4504	<	final int n = 1_000;
4504	>	final int n = expensiveTests ? 1_000_000 : 10;
4505		final CompletableFuture<Void> head = new CompletableFuture<>();
4506		final CompletableFuture<Void> complete = CompletableFuture.completedFuture((Void)null);
4507		final AtomicInteger count = new AtomicInteger(0);
4508		for (int i = 0; i < n; i++) {
4509		head.thenRun(() -> count.getAndIncrement());
4510	<	head.thenAccept((x) -> count.getAndIncrement());
4511	<	head.thenApply((x) -> count.getAndIncrement());
4510	>	head.thenAccept(x -> count.getAndIncrement());
4511	>	head.thenApply(x -> count.getAndIncrement());
4512
4513		head.runAfterBoth(complete, () -> count.getAndIncrement());
4514		head.thenAcceptBoth(complete, (x, y) -> count.getAndIncrement());
#	Line 4136 | Line 4518 | public class CompletableFutureTest exten
4518		complete.thenCombine(head, (x, y) -> count.getAndIncrement());
4519
4520		head.runAfterEither(new CompletableFuture<Void>(), () -> count.getAndIncrement());
4521	<	head.acceptEither(new CompletableFuture<Void>(), (x) -> count.getAndIncrement());
4522	<	head.applyToEither(new CompletableFuture<Void>(), (x) -> count.getAndIncrement());
4521	>	head.acceptEither(new CompletableFuture<Void>(), x -> count.getAndIncrement());
4522	>	head.applyToEither(new CompletableFuture<Void>(), x -> count.getAndIncrement());
4523		new CompletableFuture<Void>().runAfterEither(head, () -> count.getAndIncrement());
4524	<	new CompletableFuture<Void>().acceptEither(head, (x) -> count.getAndIncrement());
4525	<	new CompletableFuture<Void>().applyToEither(head, (x) -> count.getAndIncrement());
4524	>	new CompletableFuture<Void>().acceptEither(head, x -> count.getAndIncrement());
4525	>	new CompletableFuture<Void>().applyToEither(head, x -> count.getAndIncrement());
4526		}
4527		head.complete(null);
4528		assertEquals(5 * 3 * n, count.get());
4529		}
4530
4531	+	/** ant -Dvmoptions=-Xmx8m -Djsr166.expensiveTests=true -Djsr166.tckTestClass=CompletableFutureTest tck */
4532	+	@SuppressWarnings("FutureReturnValueIgnored")
4533	+	public void testCoCompletionGarbageRetention() throws Throwable {
4534	+	final int n = expensiveTests ? 1_000_000 : 10;
4535	+	final CompletableFuture<Integer> incomplete = new CompletableFuture<>();
4536	+	CompletableFuture<Integer> f;
4537	+	for (int i = 0; i < n; i++) {
4538	+	f = new CompletableFuture<>();
4539	+	f.runAfterEither(incomplete, () -> {});
4540	+	f.complete(null);
4541	+
4542	+	f = new CompletableFuture<>();
4543	+	f.acceptEither(incomplete, x -> {});
4544	+	f.complete(null);
4545	+
4546	+	f = new CompletableFuture<>();
4547	+	f.applyToEither(incomplete, x -> x);
4548	+	f.complete(null);
4549	+
4550	+	f = new CompletableFuture<>();
4551	+	CompletableFuture.anyOf(f, incomplete);
4552	+	f.complete(null);
4553	+	}
4554	+
4555	+	for (int i = 0; i < n; i++) {
4556	+	f = new CompletableFuture<>();
4557	+	incomplete.runAfterEither(f, () -> {});
4558	+	f.complete(null);
4559	+
4560	+	f = new CompletableFuture<>();
4561	+	incomplete.acceptEither(f, x -> {});
4562	+	f.complete(null);
4563	+
4564	+	f = new CompletableFuture<>();
4565	+	incomplete.applyToEither(f, x -> x);
4566	+	f.complete(null);
4567	+
4568	+	f = new CompletableFuture<>();
4569	+	CompletableFuture.anyOf(incomplete, f);
4570	+	f.complete(null);
4571	+	}
4572	+	}
4573	+
4574	+	/**
4575	+	* Reproduction recipe for:
4576	+	* 8160402: Garbage retention with CompletableFuture.anyOf
4577	+	* 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
4578	+	*/
4579	+	public void testAnyOfGarbageRetention() throws Throwable {
4580	+	for (Integer v : new Integer[] { 1, null })
4581	+	{
4582	+	final int n = expensiveTests ? 100_000 : 10;
4583	+	CompletableFuture<Integer>[] fs
4584	+	= (CompletableFuture<Integer>[]) new CompletableFuture<?>[100];
4585	+	for (int i = 0; i < fs.length; i++)
4586	+	fs[i] = new CompletableFuture<>();
4587	+	fs[fs.length - 1].complete(v);
4588	+	for (int i = 0; i < n; i++)
4589	+	checkCompletedNormally(CompletableFuture.anyOf(fs), v);
4590	+	}}
4591	+
4592	+	/**
4593	+	* Checks for garbage retention with allOf.
4594	+	*
4595	+	* As of 2016-07, fails with OOME:
4596	+	* ant -Dvmoptions=-Xmx8m -Djsr166.expensiveTests=true -Djsr166.tckTestClass=CompletableFutureTest -Djsr166.methodFilter=testCancelledAllOfGarbageRetention tck
4597	+	*/
4598	+	public void testCancelledAllOfGarbageRetention() throws Throwable {
4599	+	final int n = expensiveTests ? 100_000 : 10;
4600	+	CompletableFuture<Integer>[] fs
4601	+	= (CompletableFuture<Integer>[]) new CompletableFuture<?>[100];
4602	+	for (int i = 0; i < fs.length; i++)
4603	+	fs[i] = new CompletableFuture<>();
4604	+	for (int i = 0; i < n; i++)
4605	+	assertTrue(CompletableFuture.allOf(fs).cancel(false));
4606	+	}
4607	+
4608	+	/**
4609	+	* Checks for garbage retention when a dependent future is
4610	+	* cancelled and garbage-collected.
4611	+	* 8161600: Garbage retention when source CompletableFutures are never completed
4612	+	*
4613	+	* As of 2016-07, fails with OOME:
4614	+	* ant -Dvmoptions=-Xmx8m -Djsr166.expensiveTests=true -Djsr166.tckTestClass=CompletableFutureTest -Djsr166.methodFilter=testCancelledGarbageRetention tck
4615	+	*/
4616	+	public void testCancelledGarbageRetention() throws Throwable {
4617	+	final int n = expensiveTests ? 100_000 : 10;
4618	+	CompletableFuture<Integer> neverCompleted = new CompletableFuture<>();
4619	+	for (int i = 0; i < n; i++)
4620	+	assertTrue(neverCompleted.thenRun(() -> {}).cancel(true));
4621	+	}
4622	+
4623	+	/**
4624	+	* Checks for garbage retention when MinimalStage.toCompletableFuture()
4625	+	* is invoked many times.
4626	+	* 8161600: Garbage retention when source CompletableFutures are never completed
4627	+	*
4628	+	* As of 2016-07, fails with OOME:
4629	+	* ant -Dvmoptions=-Xmx8m -Djsr166.expensiveTests=true -Djsr166.tckTestClass=CompletableFutureTest -Djsr166.methodFilter=testToCompletableFutureGarbageRetention tck
4630	+	*/
4631	+	public void testToCompletableFutureGarbageRetention() throws Throwable {
4632	+	final int n = expensiveTests ? 900_000 : 10;
4633	+	CompletableFuture<Integer> neverCompleted = new CompletableFuture<>();
4634	+	CompletionStage minimal = neverCompleted.minimalCompletionStage();
4635	+	for (int i = 0; i < n; i++)
4636	+	assertTrue(minimal.toCompletableFuture().cancel(true));
4637	+	}
4638	+
4639		//     static <U> U join(CompletionStage<U> stage) {
4640		//         CompletableFuture<U> f = new CompletableFuture<>();
4641		//         stage.whenComplete((v, ex) -> {
#	Line 4170 | Line 4660 | public class CompletableFutureTest exten
4660		//         return stage.toCompletableFuture().copy().isDone();
4661		//     }
4662
4663	+	// For testing default implementations
4664	+	// Only non-default interface methods defined.
4665	+	static final class DelegatedCompletionStage<T> implements CompletionStage<T> {
4666	+	final CompletableFuture<T> cf;
4667	+	DelegatedCompletionStage(CompletableFuture<T> cf) { this.cf = cf; }
4668	+	public CompletableFuture<T> toCompletableFuture() {
4669	+	return cf; }
4670	+	public CompletionStage<Void> thenRun
4671	+	(Runnable action) {
4672	+	return cf.thenRun(action); }
4673	+	public CompletionStage<Void> thenRunAsync
4674	+	(Runnable action) {
4675	+	return cf.thenRunAsync(action); }
4676	+	public CompletionStage<Void> thenRunAsync
4677	+	(Runnable action,
4678	+	Executor executor) {
4679	+	return cf.thenRunAsync(action, executor); }
4680	+	public CompletionStage<Void> thenAccept
4681	+	(Consumer<? super T> action) {
4682	+	return cf.thenAccept(action); }
4683	+	public CompletionStage<Void> thenAcceptAsync
4684	+	(Consumer<? super T> action) {
4685	+	return cf.thenAcceptAsync(action); }
4686	+	public CompletionStage<Void> thenAcceptAsync
4687	+	(Consumer<? super T> action,
4688	+	Executor executor) {
4689	+	return cf.thenAcceptAsync(action, executor); }
4690	+	public <U> CompletionStage<U> thenApply
4691	+	(Function<? super T,? extends U> a) {
4692	+	return cf.thenApply(a); }
4693	+	public <U> CompletionStage<U> thenApplyAsync
4694	+	(Function<? super T,? extends U> fn) {
4695	+	return cf.thenApplyAsync(fn); }
4696	+	public <U> CompletionStage<U> thenApplyAsync
4697	+	(Function<? super T,? extends U> fn,
4698	+	Executor executor) {
4699	+	return cf.thenApplyAsync(fn, executor); }
4700	+	public <U,V> CompletionStage<V> thenCombine
4701	+	(CompletionStage<? extends U> other,
4702	+	BiFunction<? super T,? super U,? extends V> fn) {
4703	+	return cf.thenCombine(other, fn); }
4704	+	public <U,V> CompletionStage<V> thenCombineAsync
4705	+	(CompletionStage<? extends U> other,
4706	+	BiFunction<? super T,? super U,? extends V> fn) {
4707	+	return cf.thenCombineAsync(other, fn); }
4708	+	public <U,V> CompletionStage<V> thenCombineAsync
4709	+	(CompletionStage<? extends U> other,
4710	+	BiFunction<? super T,? super U,? extends V> fn,
4711	+	Executor executor) {
4712	+	return cf.thenCombineAsync(other, fn, executor); }
4713	+	public <U> CompletionStage<Void> thenAcceptBoth
4714	+	(CompletionStage<? extends U> other,
4715	+	BiConsumer<? super T, ? super U> action) {
4716	+	return cf.thenAcceptBoth(other, action); }
4717	+	public <U> CompletionStage<Void> thenAcceptBothAsync
4718	+	(CompletionStage<? extends U> other,
4719	+	BiConsumer<? super T, ? super U> action) {
4720	+	return cf.thenAcceptBothAsync(other, action); }
4721	+	public <U> CompletionStage<Void> thenAcceptBothAsync
4722	+	(CompletionStage<? extends U> other,
4723	+	BiConsumer<? super T, ? super U> action,
4724	+	Executor executor) {
4725	+	return cf.thenAcceptBothAsync(other, action, executor); }
4726	+	public CompletionStage<Void> runAfterBoth
4727	+	(CompletionStage<?> other,
4728	+	Runnable action) {
4729	+	return cf.runAfterBoth(other, action); }
4730	+	public CompletionStage<Void> runAfterBothAsync
4731	+	(CompletionStage<?> other,
4732	+	Runnable action) {
4733	+	return cf.runAfterBothAsync(other, action); }
4734	+	public CompletionStage<Void> runAfterBothAsync
4735	+	(CompletionStage<?> other,
4736	+	Runnable action,
4737	+	Executor executor) {
4738	+	return cf.runAfterBothAsync(other, action, executor); }
4739	+	public <U> CompletionStage<U> applyToEither
4740	+	(CompletionStage<? extends T> other,
4741	+	Function<? super T, U> fn) {
4742	+	return cf.applyToEither(other, fn); }
4743	+	public <U> CompletionStage<U> applyToEitherAsync
4744	+	(CompletionStage<? extends T> other,
4745	+	Function<? super T, U> fn) {
4746	+	return cf.applyToEitherAsync(other, fn); }
4747	+	public <U> CompletionStage<U> applyToEitherAsync
4748	+	(CompletionStage<? extends T> other,
4749	+	Function<? super T, U> fn,
4750	+	Executor executor) {
4751	+	return cf.applyToEitherAsync(other, fn, executor); }
4752	+	public CompletionStage<Void> acceptEither
4753	+	(CompletionStage<? extends T> other,
4754	+	Consumer<? super T> action) {
4755	+	return cf.acceptEither(other, action); }
4756	+	public CompletionStage<Void> acceptEitherAsync
4757	+	(CompletionStage<? extends T> other,
4758	+	Consumer<? super T> action) {
4759	+	return cf.acceptEitherAsync(other, action); }
4760	+	public CompletionStage<Void> acceptEitherAsync
4761	+	(CompletionStage<? extends T> other,
4762	+	Consumer<? super T> action,
4763	+	Executor executor) {
4764	+	return cf.acceptEitherAsync(other, action, executor); }
4765	+	public CompletionStage<Void> runAfterEither
4766	+	(CompletionStage<?> other,
4767	+	Runnable action) {
4768	+	return cf.runAfterEither(other, action); }
4769	+	public CompletionStage<Void> runAfterEitherAsync
4770	+	(CompletionStage<?> other,
4771	+	Runnable action) {
4772	+	return cf.runAfterEitherAsync(other, action); }
4773	+	public CompletionStage<Void> runAfterEitherAsync
4774	+	(CompletionStage<?> other,
4775	+	Runnable action,
4776	+	Executor executor) {
4777	+	return cf.runAfterEitherAsync(other, action, executor); }
4778	+	public <U> CompletionStage<U> thenCompose
4779	+	(Function<? super T, ? extends CompletionStage<U>> fn) {
4780	+	return cf.thenCompose(fn); }
4781	+	public <U> CompletionStage<U> thenComposeAsync
4782	+	(Function<? super T, ? extends CompletionStage<U>> fn) {
4783	+	return cf.thenComposeAsync(fn); }
4784	+	public <U> CompletionStage<U> thenComposeAsync
4785	+	(Function<? super T, ? extends CompletionStage<U>> fn,
4786	+	Executor executor) {
4787	+	return cf.thenComposeAsync(fn, executor); }
4788	+	public <U> CompletionStage<U> handle
4789	+	(BiFunction<? super T, Throwable, ? extends U> fn) {
4790	+	return cf.handle(fn); }
4791	+	public <U> CompletionStage<U> handleAsync
4792	+	(BiFunction<? super T, Throwable, ? extends U> fn) {
4793	+	return cf.handleAsync(fn); }
4794	+	public <U> CompletionStage<U> handleAsync
4795	+	(BiFunction<? super T, Throwable, ? extends U> fn,
4796	+	Executor executor) {
4797	+	return cf.handleAsync(fn, executor); }
4798	+	public CompletionStage<T> whenComplete
4799	+	(BiConsumer<? super T, ? super Throwable> action) {
4800	+	return cf.whenComplete(action); }
4801	+	public CompletionStage<T> whenCompleteAsync
4802	+	(BiConsumer<? super T, ? super Throwable> action) {
4803	+	return cf.whenCompleteAsync(action); }
4804	+	public CompletionStage<T> whenCompleteAsync
4805	+	(BiConsumer<? super T, ? super Throwable> action,
4806	+	Executor executor) {
4807	+	return cf.whenCompleteAsync(action, executor); }
4808	+	public CompletionStage<T> exceptionally
4809	+	(Function<Throwable, ? extends T> fn) {
4810	+	return cf.exceptionally(fn); }
4811	+	}
4812	+
4813	+	/**
4814	+	* default-implemented exceptionallyAsync action is not invoked when
4815	+	* source completes normally, and source result is propagated
4816	+	*/
4817	+	public void testDefaultExceptionallyAsync_normalCompletion() {
4818	+	for (boolean createIncomplete : new boolean[] { true, false })
4819	+	for (Integer v1 : new Integer[] { 1, null })
4820	+	{
4821	+	final AtomicInteger ran = new AtomicInteger(0);
4822	+	final CompletableFuture<Integer> f = new CompletableFuture<>();
4823	+	final DelegatedCompletionStage<Integer> d =
4824	+	new DelegatedCompletionStage<Integer>(f);
4825	+	if (!createIncomplete) assertTrue(f.complete(v1));
4826	+	final CompletionStage<Integer> g = d.exceptionallyAsync
4827	+	((Throwable t) -> {
4828	+	ran.getAndIncrement();
4829	+	throw new AssertionError("should not be called");
4830	+	});
4831	+	if (createIncomplete) assertTrue(f.complete(v1));
4832	+
4833	+	checkCompletedNormally(g.toCompletableFuture(), v1);
4834	+	checkCompletedNormally(f, v1);
4835	+	assertEquals(0, ran.get());
4836	+	}}
4837	+
4838	+	/**
4839	+	* default-implemented exceptionallyAsync action completes with
4840	+	* function value on source exception
4841	+	*/
4842	+	public void testDefaultExceptionallyAsync_exceptionalCompletion() {
4843	+	for (boolean createIncomplete : new boolean[] { true, false })
4844	+	for (Integer v1 : new Integer[] { 1, null })
4845	+	{
4846	+	final AtomicInteger ran = new AtomicInteger(0);
4847	+	final CFException ex = new CFException();
4848	+	final CompletableFuture<Integer> f = new CompletableFuture<>();
4849	+	final DelegatedCompletionStage<Integer> d =
4850	+	new DelegatedCompletionStage<Integer>(f);
4851	+	if (!createIncomplete) f.completeExceptionally(ex);
4852	+	final CompletionStage<Integer> g = d.exceptionallyAsync
4853	+	((Throwable t) -> {
4854	+	assertSame(t, ex);
4855	+	ran.getAndIncrement();
4856	+	return v1;
4857	+	});
4858	+	if (createIncomplete) f.completeExceptionally(ex);
4859	+
4860	+	checkCompletedNormally(g.toCompletableFuture(), v1);
4861	+	checkCompletedExceptionally(f, ex);
4862	+	assertEquals(1, ran.get());
4863	+	}}
4864	+
4865	+	/**
4866	+	* Under default implementation, if an "exceptionally action"
4867	+	* throws an exception, it completes exceptionally with that
4868	+	* exception
4869	+	*/
4870	+	public void testDefaultExceptionallyAsync_exceptionalCompletionActionFailed() {
4871	+	for (boolean createIncomplete : new boolean[] { true, false })
4872	+	{
4873	+	final AtomicInteger ran = new AtomicInteger(0);
4874	+	final CFException ex1 = new CFException();
4875	+	final CFException ex2 = new CFException();
4876	+	final CompletableFuture<Integer> f = new CompletableFuture<>();
4877	+	final DelegatedCompletionStage<Integer> d =
4878	+	new DelegatedCompletionStage<Integer>(f);
4879	+	if (!createIncomplete) f.completeExceptionally(ex1);
4880	+	final CompletionStage<Integer> g = d.exceptionallyAsync
4881	+	((Throwable t) -> {
4882	+	assertSame(t, ex1);
4883	+	ran.getAndIncrement();
4884	+	throw ex2;
4885	+	});
4886	+	if (createIncomplete) f.completeExceptionally(ex1);
4887	+
4888	+	checkCompletedWithWrappedException(g.toCompletableFuture(), ex2);
4889	+	checkCompletedExceptionally(f, ex1);
4890	+	checkCompletedExceptionally(d.toCompletableFuture(), ex1);
4891	+	assertEquals(1, ran.get());
4892	+	}}
4893	+
4894	+	/**
4895	+	* default-implemented exceptionallyCompose result completes
4896	+	* normally after normal completion of source
4897	+	*/
4898	+	public void testDefaultExceptionallyCompose_normalCompletion() {
4899	+	for (boolean createIncomplete : new boolean[] { true, false })
4900	+	for (Integer v1 : new Integer[] { 1, null })
4901	+	{
4902	+	final CompletableFuture<Integer> f = new CompletableFuture<>();
4903	+	final ExceptionalCompletableFutureFunction r =
4904	+	new ExceptionalCompletableFutureFunction(ExecutionMode.SYNC);
4905	+	final DelegatedCompletionStage<Integer> d =
4906	+	new DelegatedCompletionStage<Integer>(f);
4907	+	if (!createIncomplete) assertTrue(f.complete(v1));
4908	+	final CompletionStage<Integer> g = d.exceptionallyCompose(r);
4909	+	if (createIncomplete) assertTrue(f.complete(v1));
4910	+
4911	+	checkCompletedNormally(f, v1);
4912	+	checkCompletedNormally(g.toCompletableFuture(), v1);
4913	+	r.assertNotInvoked();
4914	+	}}
4915	+
4916	+	/**
4917	+	* default-implemented exceptionallyCompose result completes
4918	+	* normally after exceptional completion of source
4919	+	*/
4920	+	public void testDefaultExceptionallyCompose_exceptionalCompletion() {
4921	+	for (boolean createIncomplete : new boolean[] { true, false })
4922	+	{
4923	+	final CFException ex = new CFException();
4924	+	final ExceptionalCompletableFutureFunction r =
4925	+	new ExceptionalCompletableFutureFunction(ExecutionMode.SYNC);
4926	+	final CompletableFuture<Integer> f = new CompletableFuture<>();
4927	+	final DelegatedCompletionStage<Integer> d =
4928	+	new DelegatedCompletionStage<Integer>(f);
4929	+	if (!createIncomplete) f.completeExceptionally(ex);
4930	+	final CompletionStage<Integer> g = d.exceptionallyCompose(r);
4931	+	if (createIncomplete) f.completeExceptionally(ex);
4932	+
4933	+	checkCompletedExceptionally(f, ex);
4934	+	checkCompletedNormally(g.toCompletableFuture(), r.value);
4935	+	r.assertInvoked();
4936	+	}}
4937	+
4938	+	/**
4939	+	* default-implemented exceptionallyCompose completes
4940	+	* exceptionally on exception if action does
4941	+	*/
4942	+	public void testDefaultExceptionallyCompose_actionFailed() {
4943	+	for (boolean createIncomplete : new boolean[] { true, false })
4944	+	{
4945	+	final CFException ex = new CFException();
4946	+	final CompletableFuture<Integer> f = new CompletableFuture<>();
4947	+	final FailingExceptionalCompletableFutureFunction r
4948	+	= new FailingExceptionalCompletableFutureFunction(ExecutionMode.SYNC);
4949	+	final DelegatedCompletionStage<Integer> d =
4950	+	new DelegatedCompletionStage<Integer>(f);
4951	+	if (!createIncomplete) f.completeExceptionally(ex);
4952	+	final CompletionStage<Integer> g = d.exceptionallyCompose(r);
4953	+	if (createIncomplete) f.completeExceptionally(ex);
4954	+
4955	+	checkCompletedExceptionally(f, ex);
4956	+	checkCompletedWithWrappedException(g.toCompletableFuture(), r.ex);
4957	+	r.assertInvoked();
4958	+	}}
4959	+
4960	+	/**
4961	+	* default-implemented exceptionallyComposeAsync result completes
4962	+	* normally after normal completion of source
4963	+	*/
4964	+	public void testDefaultExceptionallyComposeAsync_normalCompletion() {
4965	+	for (boolean createIncomplete : new boolean[] { true, false })
4966	+	for (Integer v1 : new Integer[] { 1, null })
4967	+	{
4968	+	final CompletableFuture<Integer> f = new CompletableFuture<>();
4969	+	final ExceptionalCompletableFutureFunction r =
4970	+	new ExceptionalCompletableFutureFunction(ExecutionMode.ASYNC);
4971	+	final DelegatedCompletionStage<Integer> d =
4972	+	new DelegatedCompletionStage<Integer>(f);
4973	+	if (!createIncomplete) assertTrue(f.complete(v1));
4974	+	final CompletionStage<Integer> g = d.exceptionallyComposeAsync(r);
4975	+	if (createIncomplete) assertTrue(f.complete(v1));
4976	+
4977	+	checkCompletedNormally(f, v1);
4978	+	checkCompletedNormally(g.toCompletableFuture(), v1);
4979	+	r.assertNotInvoked();
4980	+	}}
4981	+
4982	+	/**
4983	+	* default-implemented exceptionallyComposeAsync result completes
4984	+	* normally after exceptional completion of source
4985	+	*/
4986	+	public void testDefaultExceptionallyComposeAsync_exceptionalCompletion() {
4987	+	for (boolean createIncomplete : new boolean[] { true, false })
4988	+	{
4989	+	final CFException ex = new CFException();
4990	+	final ExceptionalCompletableFutureFunction r =
4991	+	new ExceptionalCompletableFutureFunction(ExecutionMode.ASYNC);
4992	+	final CompletableFuture<Integer> f = new CompletableFuture<>();
4993	+	final DelegatedCompletionStage<Integer> d =
4994	+	new DelegatedCompletionStage<Integer>(f);
4995	+	if (!createIncomplete) f.completeExceptionally(ex);
4996	+	final CompletionStage<Integer> g = d.exceptionallyComposeAsync(r);
4997	+	if (createIncomplete) f.completeExceptionally(ex);
4998	+
4999	+	checkCompletedExceptionally(f, ex);
5000	+	checkCompletedNormally(g.toCompletableFuture(), r.value);
5001	+	r.assertInvoked();
5002	+	}}
5003	+
5004	+	/**
5005	+	* default-implemented exceptionallyComposeAsync completes
5006	+	* exceptionally on exception if action does
5007	+	*/
5008	+	public void testDefaultExceptionallyComposeAsync_actionFailed() {
5009	+	for (boolean createIncomplete : new boolean[] { true, false })
5010	+	{
5011	+	final CFException ex = new CFException();
5012	+	final CompletableFuture<Integer> f = new CompletableFuture<>();
5013	+	final FailingExceptionalCompletableFutureFunction r
5014	+	= new FailingExceptionalCompletableFutureFunction(ExecutionMode.ASYNC);
5015	+	final DelegatedCompletionStage<Integer> d =
5016	+	new DelegatedCompletionStage<Integer>(f);
5017	+	if (!createIncomplete) f.completeExceptionally(ex);
5018	+	final CompletionStage<Integer> g = d.exceptionallyComposeAsync(r);
5019	+	if (createIncomplete) f.completeExceptionally(ex);
5020	+
5021	+	checkCompletedExceptionally(f, ex);
5022	+	checkCompletedWithWrappedException(g.toCompletableFuture(), r.ex);
5023	+	r.assertInvoked();
5024	+	}}
5025	+
5026	+	/**
5027	+	* default-implemented exceptionallyComposeAsync result completes
5028	+	* normally after normal completion of source
5029	+	*/
5030	+	public void testDefaultExceptionallyComposeAsyncExecutor_normalCompletion() {
5031	+	for (boolean createIncomplete : new boolean[] { true, false })
5032	+	for (Integer v1 : new Integer[] { 1, null })
5033	+	{
5034	+	final CompletableFuture<Integer> f = new CompletableFuture<>();
5035	+	final ExceptionalCompletableFutureFunction r =
5036	+	new ExceptionalCompletableFutureFunction(ExecutionMode.EXECUTOR);
5037	+	final DelegatedCompletionStage<Integer> d =
5038	+	new DelegatedCompletionStage<Integer>(f);
5039	+	if (!createIncomplete) assertTrue(f.complete(v1));
5040	+	final CompletionStage<Integer> g = d.exceptionallyComposeAsync(r, new ThreadExecutor());
5041	+	if (createIncomplete) assertTrue(f.complete(v1));
5042	+
5043	+	checkCompletedNormally(f, v1);
5044	+	checkCompletedNormally(g.toCompletableFuture(), v1);
5045	+	r.assertNotInvoked();
5046	+	}}
5047	+
5048	+	/**
5049	+	* default-implemented exceptionallyComposeAsync result completes
5050	+	* normally after exceptional completion of source
5051	+	*/
5052	+	public void testDefaultExceptionallyComposeAsyncExecutor_exceptionalCompletion() {
5053	+	for (boolean createIncomplete : new boolean[] { true, false })
5054	+	{
5055	+	final CFException ex = new CFException();
5056	+	final ExceptionalCompletableFutureFunction r =
5057	+	new ExceptionalCompletableFutureFunction(ExecutionMode.EXECUTOR);
5058	+	final CompletableFuture<Integer> f = new CompletableFuture<>();
5059	+	final DelegatedCompletionStage<Integer> d =
5060	+	new DelegatedCompletionStage<Integer>(f);
5061	+	if (!createIncomplete) f.completeExceptionally(ex);
5062	+	final CompletionStage<Integer> g = d.exceptionallyComposeAsync(r, new ThreadExecutor());
5063	+	if (createIncomplete) f.completeExceptionally(ex);
5064	+
5065	+	checkCompletedExceptionally(f, ex);
5066	+	checkCompletedNormally(g.toCompletableFuture(), r.value);
5067	+	r.assertInvoked();
5068	+	}}
5069	+
5070	+	/**
5071	+	* default-implemented exceptionallyComposeAsync completes
5072	+	* exceptionally on exception if action does
5073	+	*/
5074	+	public void testDefaultExceptionallyComposeAsyncExecutor_actionFailed() {
5075	+	for (boolean createIncomplete : new boolean[] { true, false })
5076	+	{
5077	+	final CFException ex = new CFException();
5078	+	final CompletableFuture<Integer> f = new CompletableFuture<>();
5079	+	final FailingExceptionalCompletableFutureFunction r
5080	+	= new FailingExceptionalCompletableFutureFunction(ExecutionMode.EXECUTOR);
5081	+	final DelegatedCompletionStage<Integer> d =
5082	+	new DelegatedCompletionStage<Integer>(f);
5083	+	if (!createIncomplete) f.completeExceptionally(ex);
5084	+	final CompletionStage<Integer> g = d.exceptionallyComposeAsync(r, new ThreadExecutor());
5085	+	if (createIncomplete) f.completeExceptionally(ex);
5086	+
5087	+	checkCompletedExceptionally(f, ex);
5088	+	checkCompletedWithWrappedException(g.toCompletableFuture(), r.ex);
5089	+	r.assertInvoked();
5090	+	}}
5091	+
5092		}

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