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root/jsr166/jsr166/src/test/tck/CompletableFutureTest.java

Comparing jsr166/src/test/tck/CompletableFutureTest.java (file contents):
Revision 1.127 by jsr166, Sun Oct 25 02:58:25 2015 UTC vs.
Revision 1.223 by jsr166, Mon Dec 16 22:36:39 2019 UTC

#	Line 7 | Line 7
7
8		import static java.util.concurrent.TimeUnit.MILLISECONDS;
9		import static java.util.concurrent.TimeUnit.SECONDS;
10	+	import static java.util.concurrent.CompletableFuture.completedFuture;
11	+	import static java.util.concurrent.CompletableFuture.failedFuture;
12
13		import java.lang.reflect.Method;
14		import java.lang.reflect.Modifier;
#	Line 28 | Line 30 | import java.util.concurrent.ExecutionExc
30		import java.util.concurrent.Executor;
31		import java.util.concurrent.ForkJoinPool;
32		import java.util.concurrent.ForkJoinTask;
33	+	import java.util.concurrent.RejectedExecutionException;
34		import java.util.concurrent.TimeoutException;
32	–	import java.util.concurrent.TimeUnit;
35		import java.util.concurrent.atomic.AtomicInteger;
36		import java.util.concurrent.atomic.AtomicReference;
37		import java.util.function.BiConsumer;
#	Line 56 | 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());
76	<	} catch (Throwable fail) { threadUnexpectedException(fail); }
77	<	try {
78	<	assertEquals(value, f.getNow(null));
79	<	} catch (Throwable fail) { threadUnexpectedException(fail); }
80	<	try {
81	<	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 139 | 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 194 | 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 293 | 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 330 | 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 358 | 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 370 | 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 379 | 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 398 | 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 408 | 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 426 | 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 436 | 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 446 | Line 469 | public class CompletableFutureTest exten
469		}
470		}
471
472	<	class Noop extends CheckedAction implements Runnable {
472	>	static class Noop extends CheckedAction implements Runnable {
473		Noop(ExecutionMode m) { super(m); }
474		public void run() {
475		invoked();
476		}
477		}
478
479	<	class FailingSupplier extends CheckedAction
479	>	static class FailingSupplier extends CheckedAction
480		implements Supplier<Integer>
481		{
482	<	FailingSupplier(ExecutionMode m) { super(m); }
482	>	final CFException ex;
483	>	FailingSupplier(ExecutionMode m) { super(m); ex = new CFException(); }
484		public Integer get() {
485		invoked();
486	<	throw new CFException();
486	>	throw ex;
487		}
488		}
489
490	<	class FailingConsumer extends CheckedIntegerAction
490	>	static class FailingConsumer extends CheckedIntegerAction
491		implements Consumer<Integer>
492		{
493	<	FailingConsumer(ExecutionMode m) { super(m); }
493	>	final CFException ex;
494	>	FailingConsumer(ExecutionMode m) { super(m); ex = new CFException(); }
495		public void accept(Integer x) {
496		invoked();
497		value = x;
498	<	throw new CFException();
498	>	throw ex;
499		}
500		}
501
502	<	class FailingBiConsumer extends CheckedIntegerAction
502	>	static class FailingBiConsumer extends CheckedIntegerAction
503		implements BiConsumer<Integer, Integer>
504		{
505	<	FailingBiConsumer(ExecutionMode m) { super(m); }
505	>	final CFException ex;
506	>	FailingBiConsumer(ExecutionMode m) { super(m); ex = new CFException(); }
507		public void accept(Integer x, Integer y) {
508		invoked();
509		value = subtract(x, y);
510	<	throw new CFException();
510	>	throw ex;
511		}
512		}
513
514	<	class FailingFunction extends CheckedIntegerAction
514	>	static class FailingFunction extends CheckedIntegerAction
515		implements Function<Integer, Integer>
516		{
517	<	FailingFunction(ExecutionMode m) { super(m); }
517	>	final CFException ex;
518	>	FailingFunction(ExecutionMode m) { super(m); ex = new CFException(); }
519		public Integer apply(Integer x) {
520		invoked();
521		value = x;
522	<	throw new CFException();
522	>	throw ex;
523		}
524		}
525
526	<	class FailingBiFunction extends CheckedIntegerAction
526	>	static class FailingBiFunction extends CheckedIntegerAction
527		implements BiFunction<Integer, Integer, Integer>
528		{
529	<	FailingBiFunction(ExecutionMode m) { super(m); }
529	>	final CFException ex;
530	>	FailingBiFunction(ExecutionMode m) { super(m); ex = new CFException(); }
531		public Integer apply(Integer x, Integer y) {
532		invoked();
533		value = subtract(x, y);
534	<	throw new CFException();
534	>	throw ex;
535		}
536		}
537
538	<	class FailingRunnable extends CheckedAction implements Runnable {
539	<	FailingRunnable(ExecutionMode m) { super(m); }
538	>	static class FailingRunnable extends CheckedAction implements Runnable {
539	>	final CFException ex;
540	>	FailingRunnable(ExecutionMode m) { super(m); ex = new CFException(); }
541		public void run() {
542		invoked();
543	<	throw new CFException();
543	>	throw ex;
544		}
545		}
546
547	<	class CompletableFutureInc extends CheckedIntegerAction
547	>	static class CompletableFutureInc extends CheckedIntegerAction
548		implements Function<Integer, CompletableFuture<Integer>>
549		{
550		CompletableFutureInc(ExecutionMode m) { super(m); }
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	<	class FailingCompletableFutureFunction extends CheckedIntegerAction
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	>	static class FailingCompletableFutureFunction extends CheckedIntegerAction
580		implements Function<Integer, CompletableFuture<Integer>>
581		{
582	<	FailingCompletableFutureFunction(ExecutionMode m) { super(m); }
582	>	final CFException ex;
583	>	FailingCompletableFutureFunction(ExecutionMode m) { super(m); ex = new CFException(); }
584		public CompletableFuture<Integer> apply(Integer x) {
585		invoked();
586		value = x;
587	<	throw new CFException();
587	>	throw ex;
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
#	Line 633 | 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		},
637	–
704		ASYNC {
705		public void checkExecutionMode() {
706		assertEquals(defaultExecutorIsCommonPool,
#	Line 707 | 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 780 | 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 822 | 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 829 | 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");
842	<	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 853 | 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	+	/**
971	+	* If an "exceptionally action" throws an exception, it completes
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	<	assertEquals(1, a.get());
993	>	checkCompletedExceptionally(f, ex1);
994	>	assertEquals(1, ran.get());
995		}}
996
997		/**
#	Line 903 | 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 x, Throwable t) -> {
1011	>	(Integer result, Throwable t) -> {
1012		m.checkExecutionMode();
1013	<	threadAssertSame(x, 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 929 | 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);
1036		final CompletableFuture<Integer> g = m.whenComplete
1037		(f,
1038	<	(Integer x, Throwable t) -> {
1038	>	(Integer result, Throwable t) -> {
1039		m.checkExecutionMode();
1040	<	threadAssertNull(x);
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 957 | 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 x, Throwable t) -> {
1065	>	(Integer result, Throwable t) -> {
1066		m.checkExecutionMode();
1067	<	threadAssertNull(x);
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		/**
1079		* If a whenComplete action throws an exception when triggered by
1080		* a normal completion, it completes exceptionally
1081		*/
1082	<	public void testWhenComplete_actionFailed() {
1082	>	public void testWhenComplete_sourceCompletedNormallyActionFailed() {
1083		for (boolean createIncomplete : new boolean[] { true, false })
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));
1091		final CompletableFuture<Integer> g = m.whenComplete
1092		(f,
1093	<	(Integer x, Throwable t) -> {
1093	>	(Integer result, Throwable t) -> {
1094		m.checkExecutionMode();
1095	<	threadAssertSame(x, 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		/**
1108		* If a whenComplete action throws an exception when triggered by
1109		* a source completion that also throws an exception, the source
1110	<	* exception takes precedence.
1110	>	* exception takes precedence (unlike handle)
1111		*/
1112	<	public void testWhenComplete_actionFailedSourceFailed() {
1112	>	public void testWhenComplete_sourceFailedActionFailed() {
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 1021 | Line 1121 | public class CompletableFutureTest exten
1121		if (!createIncomplete) f.completeExceptionally(ex1);
1122		final CompletableFuture<Integer> g = m.whenComplete
1123		(f,
1124	<	(Integer x, Throwable t) -> {
1124	>	(Integer result, Throwable t) -> {
1125		m.checkExecutionMode();
1126	<	threadAssertSame(t, ex1);
1127	<	threadAssertNull(x);
1128	<	a.getAndIncrement();
1126	>	assertSame(t, ex1);
1127	>	assertNull(result);
1128	>	ran.getAndIncrement();
1129		throw ex2;
1130		});
1131		if (createIncomplete) f.completeExceptionally(ex1);
1132
1133		checkCompletedWithWrappedException(g, ex1);
1134		checkCompletedExceptionally(f, ex1);
1135	<	assertEquals(1, a.get());
1135	>	if (testImplementationDetails) {
1136	>	assertEquals(1, ex1.getSuppressed().length);
1137	>	assertSame(ex2, ex1.getSuppressed()[0]);
1138	>	}
1139	>	assertEquals(1, ran.get());
1140		}}
1141
1142		/**
#	Line 1045 | 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 x, Throwable t) -> {
1156	>	(Integer result, Throwable t) -> {
1157		m.checkExecutionMode();
1158	<	threadAssertSame(x, 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 1073 | 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 x, Throwable t) -> {
1185	>	(Integer result, Throwable t) -> {
1186		m.checkExecutionMode();
1187	<	threadAssertNull(x);
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 1103 | 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 x, Throwable t) -> {
1214	>	(Integer result, Throwable t) -> {
1215		m.checkExecutionMode();
1216	<	threadAssertNull(x);
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		/**
1229	<	* handle result completes exceptionally if action does
1229	>	* If a "handle action" throws an exception when triggered by
1230	>	* a normal completion, it completes exceptionally
1231		*/
1232	<	public void testHandle_sourceFailedActionFailed() {
1232	>	public void testHandle_sourceCompletedNormallyActionFailed() {
1233		for (ExecutionMode m : ExecutionMode.values())
1234		for (boolean createIncomplete : new boolean[] { true, false })
1235	+	for (Integer v1 : new Integer[] { 1, null })
1236		{
1237		final CompletableFuture<Integer> f = new CompletableFuture<>();
1238	<	final AtomicInteger a = new AtomicInteger(0);
1239	<	final CFException ex1 = new CFException();
1240	<	final CFException ex2 = new CFException();
1135	<	if (!createIncomplete) f.completeExceptionally(ex1);
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 x, Throwable t) -> {
1243	>	(Integer result, Throwable t) -> {
1244		m.checkExecutionMode();
1245	<	threadAssertNull(x);
1246	<	threadAssertSame(ex1, t);
1247	<	a.getAndIncrement();
1248	<	throw ex2;
1245	>	assertSame(result, v1);
1246	>	assertNull(t);
1247	>	ran.getAndIncrement();
1248	>	throw ex;
1249		});
1250	<	if (createIncomplete) f.completeExceptionally(ex1);
1250	>	if (createIncomplete) assertTrue(f.complete(v1));
1251
1252	<	checkCompletedWithWrappedException(g, ex2);
1253	<	checkCompletedExceptionally(f, ex1);
1254	<	assertEquals(1, a.get());
1252	>	checkCompletedWithWrappedException(g, ex);
1253	>	checkCompletedNormally(f, v1);
1254	>	assertEquals(1, ran.get());
1255		}}
1256
1257	<	public void testHandle_sourceCompletedNormallyActionFailed() {
1258	<	for (ExecutionMode m : ExecutionMode.values())
1257	>	/**
1258	>	* If a "handle action" throws an exception when triggered by
1259	>	* a source completion that also throws an exception, the action
1260	>	* exception takes precedence (unlike whenComplete)
1261	>	*/
1262	>	public void testHandle_sourceFailedActionFailed() {
1263		for (boolean createIncomplete : new boolean[] { true, false })
1264	<	for (Integer v1 : new Integer[] { 1, null })
1264	>	for (ExecutionMode m : ExecutionMode.values())
1265		{
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<>();
1270	<	final AtomicInteger a = new AtomicInteger(0);
1271	<	final CFException ex = new CFException();
1160	<	if (!createIncomplete) assertTrue(f.complete(v1));
1270	>
1271	>	if (!createIncomplete) f.completeExceptionally(ex1);
1272		final CompletableFuture<Integer> g = m.handle
1273		(f,
1274	<	(Integer x, Throwable t) -> {
1274	>	(Integer result, Throwable t) -> {
1275		m.checkExecutionMode();
1276	<	threadAssertSame(x, v1);
1277	<	threadAssertNull(t);
1278	<	a.getAndIncrement();
1279	<	throw ex;
1276	>	assertNull(result);
1277	>	assertSame(ex1, t);
1278	>	ran.getAndIncrement();
1279	>	throw ex2;
1280		});
1281	<	if (createIncomplete) assertTrue(f.complete(v1));
1281	>	if (createIncomplete) f.completeExceptionally(ex1);
1282
1283	<	checkCompletedWithWrappedException(g, ex);
1284	<	checkCompletedNormally(f, v1);
1285	<	assertEquals(1, a.get());
1283	>	checkCompletedWithWrappedException(g, ex2);
1284	>	checkCompletedExceptionally(f, ex1);
1285	>	assertEquals(1, ran.get());
1286		}}
1287
1288		/**
#	Line 1203 | Line 1314 | public class CompletableFutureTest exten
1314		{
1315		final FailingRunnable r = new FailingRunnable(m);
1316		final CompletableFuture<Void> f = m.runAsync(r);
1317	<	checkCompletedWithWrappedCFException(f);
1317	>	checkCompletedWithWrappedException(f, r.ex);
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 1237 | Line 1361 | public class CompletableFutureTest exten
1361		{
1362		FailingSupplier r = new FailingSupplier(m);
1363		CompletableFuture<Integer> f = m.supplyAsync(r);
1364	<	checkCompletedWithWrappedCFException(f);
1364	>	checkCompletedWithWrappedException(f, r.ex);
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 1359 | Line 1496 | public class CompletableFutureTest exten
1496		final CompletableFuture<Void> h4 = m.runAfterBoth(f, f, rs[4]);
1497		final CompletableFuture<Void> h5 = m.runAfterEither(f, f, rs[5]);
1498
1499	<	checkCompletedWithWrappedCFException(h0);
1500	<	checkCompletedWithWrappedCFException(h1);
1501	<	checkCompletedWithWrappedCFException(h2);
1502	<	checkCompletedWithWrappedCFException(h3);
1503	<	checkCompletedWithWrappedCFException(h4);
1504	<	checkCompletedWithWrappedCFException(h5);
1499	>	checkCompletedWithWrappedException(h0, rs[0].ex);
1500	>	checkCompletedWithWrappedException(h1, rs[1].ex);
1501	>	checkCompletedWithWrappedException(h2, rs[2].ex);
1502	>	checkCompletedWithWrappedException(h3, rs[3].ex);
1503	>	checkCompletedWithWrappedException(h4, rs[4].ex);
1504	>	checkCompletedWithWrappedException(h5, rs[5].ex);
1505		checkCompletedNormally(f, v1);
1506		}}
1507
#	Line 1463 | Line 1600 | public class CompletableFutureTest exten
1600		final CompletableFuture<Integer> h2 = m.thenApply(f, rs[2]);
1601		final CompletableFuture<Integer> h3 = m.applyToEither(f, f, rs[3]);
1602
1603	<	checkCompletedWithWrappedCFException(h0);
1604	<	checkCompletedWithWrappedCFException(h1);
1605	<	checkCompletedWithWrappedCFException(h2);
1606	<	checkCompletedWithWrappedCFException(h3);
1603	>	checkCompletedWithWrappedException(h0, rs[0].ex);
1604	>	checkCompletedWithWrappedException(h1, rs[1].ex);
1605	>	checkCompletedWithWrappedException(h2, rs[2].ex);
1606	>	checkCompletedWithWrappedException(h3, rs[3].ex);
1607		checkCompletedNormally(f, v1);
1608		}}
1609
#	Line 1565 | Line 1702 | public class CompletableFutureTest exten
1702		final CompletableFuture<Void> h2 = m.thenAccept(f, rs[2]);
1703		final CompletableFuture<Void> h3 = m.acceptEither(f, f, rs[3]);
1704
1705	<	checkCompletedWithWrappedCFException(h0);
1706	<	checkCompletedWithWrappedCFException(h1);
1707	<	checkCompletedWithWrappedCFException(h2);
1708	<	checkCompletedWithWrappedCFException(h3);
1705	>	checkCompletedWithWrappedException(h0, rs[0].ex);
1706	>	checkCompletedWithWrappedException(h1, rs[1].ex);
1707	>	checkCompletedWithWrappedException(h2, rs[2].ex);
1708	>	checkCompletedWithWrappedException(h3, rs[3].ex);
1709		checkCompletedNormally(f, v1);
1710		}}
1711
#	Line 1730 | Line 1867 | public class CompletableFutureTest exten
1867		assertTrue(snd.complete(w2));
1868		final CompletableFuture<Integer> h3 = m.thenCombine(f, g, r3);
1869
1870	<	checkCompletedWithWrappedCFException(h1);
1871	<	checkCompletedWithWrappedCFException(h2);
1872	<	checkCompletedWithWrappedCFException(h3);
1870	>	checkCompletedWithWrappedException(h1, r1.ex);
1871	>	checkCompletedWithWrappedException(h2, r2.ex);
1872	>	checkCompletedWithWrappedException(h3, r3.ex);
1873		r1.assertInvoked();
1874		r2.assertInvoked();
1875		r3.assertInvoked();
#	Line 1894 | Line 2031 | public class CompletableFutureTest exten
2031		assertTrue(snd.complete(w2));
2032		final CompletableFuture<Void> h3 = m.thenAcceptBoth(f, g, r3);
2033
2034	<	checkCompletedWithWrappedCFException(h1);
2035	<	checkCompletedWithWrappedCFException(h2);
2036	<	checkCompletedWithWrappedCFException(h3);
2034	>	checkCompletedWithWrappedException(h1, r1.ex);
2035	>	checkCompletedWithWrappedException(h2, r2.ex);
2036	>	checkCompletedWithWrappedException(h3, r3.ex);
2037		r1.assertInvoked();
2038		r2.assertInvoked();
2039		r3.assertInvoked();
#	Line 2058 | Line 2195 | public class CompletableFutureTest exten
2195		assertTrue(snd.complete(w2));
2196		final CompletableFuture<Void> h3 = m.runAfterBoth(f, g, r3);
2197
2198	<	checkCompletedWithWrappedCFException(h1);
2199	<	checkCompletedWithWrappedCFException(h2);
2200	<	checkCompletedWithWrappedCFException(h3);
2198	>	checkCompletedWithWrappedException(h1, r1.ex);
2199	>	checkCompletedWithWrappedException(h2, r2.ex);
2200	>	checkCompletedWithWrappedException(h3, r3.ex);
2201		r1.assertInvoked();
2202		r2.assertInvoked();
2203		r3.assertInvoked();
#	Line 2350 | Line 2487 | public class CompletableFutureTest exten
2487		f.complete(v1);
2488		final CompletableFuture<Integer> h2 = m.applyToEither(f, g, rs[2]);
2489		final CompletableFuture<Integer> h3 = m.applyToEither(g, f, rs[3]);
2490	<	checkCompletedWithWrappedCFException(h0);
2491	<	checkCompletedWithWrappedCFException(h1);
2492	<	checkCompletedWithWrappedCFException(h2);
2493	<	checkCompletedWithWrappedCFException(h3);
2490	>	checkCompletedWithWrappedException(h0, rs[0].ex);
2491	>	checkCompletedWithWrappedException(h1, rs[1].ex);
2492	>	checkCompletedWithWrappedException(h2, rs[2].ex);
2493	>	checkCompletedWithWrappedException(h3, rs[3].ex);
2494		for (int i = 0; i < 4; i++) rs[i].assertValue(v1);
2495
2496		g.complete(v2);
#	Line 2362 | Line 2499 | public class CompletableFutureTest exten
2499		final CompletableFuture<Integer> h4 = m.applyToEither(f, g, rs[4]);
2500		final CompletableFuture<Integer> h5 = m.applyToEither(g, f, rs[5]);
2501
2502	<	checkCompletedWithWrappedCFException(h4);
2502	>	checkCompletedWithWrappedException(h4, rs[4].ex);
2503		assertTrue(Objects.equals(v1, rs[4].value) ||
2504		Objects.equals(v2, rs[4].value));
2505	<	checkCompletedWithWrappedCFException(h5);
2505	>	checkCompletedWithWrappedException(h5, rs[5].ex);
2506		assertTrue(Objects.equals(v1, rs[5].value) ||
2507		Objects.equals(v2, rs[5].value));
2508
#	Line 2503 | 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 2609 | Line 2746 | public class CompletableFutureTest exten
2746		f.complete(v1);
2747		final CompletableFuture<Void> h2 = m.acceptEither(f, g, rs[2]);
2748		final CompletableFuture<Void> h3 = m.acceptEither(g, f, rs[3]);
2749	<	checkCompletedWithWrappedCFException(h0);
2750	<	checkCompletedWithWrappedCFException(h1);
2751	<	checkCompletedWithWrappedCFException(h2);
2752	<	checkCompletedWithWrappedCFException(h3);
2749	>	checkCompletedWithWrappedException(h0, rs[0].ex);
2750	>	checkCompletedWithWrappedException(h1, rs[1].ex);
2751	>	checkCompletedWithWrappedException(h2, rs[2].ex);
2752	>	checkCompletedWithWrappedException(h3, rs[3].ex);
2753		for (int i = 0; i < 4; i++) rs[i].assertValue(v1);
2754
2755		g.complete(v2);
#	Line 2621 | Line 2758 | public class CompletableFutureTest exten
2758		final CompletableFuture<Void> h4 = m.acceptEither(f, g, rs[4]);
2759		final CompletableFuture<Void> h5 = m.acceptEither(g, f, rs[5]);
2760
2761	<	checkCompletedWithWrappedCFException(h4);
2761	>	checkCompletedWithWrappedException(h4, rs[4].ex);
2762		assertTrue(Objects.equals(v1, rs[4].value) ||
2763		Objects.equals(v2, rs[4].value));
2764	<	checkCompletedWithWrappedCFException(h5);
2764	>	checkCompletedWithWrappedException(h5, rs[5].ex);
2765		assertTrue(Objects.equals(v1, rs[5].value) ||
2766		Objects.equals(v2, rs[5].value));
2767
#	Line 2640 | 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 2652 | 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 2758 | 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 2864 | Line 3006 | public class CompletableFutureTest exten
3006		assertTrue(f.complete(v1));
3007		final CompletableFuture<Void> h2 = m.runAfterEither(f, g, rs[2]);
3008		final CompletableFuture<Void> h3 = m.runAfterEither(g, f, rs[3]);
3009	<	checkCompletedWithWrappedCFException(h0);
3010	<	checkCompletedWithWrappedCFException(h1);
3011	<	checkCompletedWithWrappedCFException(h2);
3012	<	checkCompletedWithWrappedCFException(h3);
3009	>	checkCompletedWithWrappedException(h0, rs[0].ex);
3010	>	checkCompletedWithWrappedException(h1, rs[1].ex);
3011	>	checkCompletedWithWrappedException(h2, rs[2].ex);
3012	>	checkCompletedWithWrappedException(h3, rs[3].ex);
3013		for (int i = 0; i < 4; i++) rs[i].assertInvoked();
3014		assertTrue(g.complete(v2));
3015		final CompletableFuture<Void> h4 = m.runAfterEither(f, g, rs[4]);
3016		final CompletableFuture<Void> h5 = m.runAfterEither(g, f, rs[5]);
3017	<	checkCompletedWithWrappedCFException(h4);
3018	<	checkCompletedWithWrappedCFException(h5);
3017	>	checkCompletedWithWrappedException(h4, rs[4].ex);
3018	>	checkCompletedWithWrappedException(h5, rs[5].ex);
3019
3020		checkCompletedNormally(f, v1);
3021		checkCompletedNormally(g, v2);
#	Line 2934 | Line 3076 | public class CompletableFutureTest exten
3076		final CompletableFuture<Integer> g = m.thenCompose(f, r);
3077		if (createIncomplete) assertTrue(f.complete(v1));
3078
3079	<	checkCompletedWithWrappedCFException(g);
3079	>	checkCompletedWithWrappedException(g, r.ex);
3080		checkCompletedNormally(f, v1);
3081		}}
3082
#	Line 2976 | 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 3011 | 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 3043 | Line 3300 | public class CompletableFutureTest exten
3300		}
3301		}
3302
3303	<	public void testAllOf_backwards() throws Exception {
3303	>	public void testAllOf_normal_backwards() throws Exception {
3304		for (int k = 1; k < 10; k++) {
3305		CompletableFuture<Integer>[] fs
3306		= (CompletableFuture<Integer>[]) new CompletableFuture[k];
#	Line 3174 | 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 3193 | 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 3233 | 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 3276 | Line 3536 | public class CompletableFutureTest exten
3536		() -> f.obtrudeException(null),
3537
3538		() -> CompletableFuture.delayedExecutor(1L, SECONDS, null),
3539	<	() -> CompletableFuture.delayedExecutor(1L, null, new ThreadExecutor()),
3539	>	() -> CompletableFuture.delayedExecutor(1L, null, exec),
3540		() -> CompletableFuture.delayedExecutor(1L, null),
3541
3542		() -> f.orTimeout(1L, null),
3543		() -> f.completeOnTimeout(42, 1L, null),
3544
3545		() -> CompletableFuture.failedFuture(null),
3546	<	() -> CompletableFuture.failedStage(null),
3287	<	};
3546	>	() -> CompletableFuture.failedStage(null));
3547
3289	–	assertThrows(NullPointerException.class, throwingActions);
3548		assertEquals(0, exec.count.get());
3549		}
3550
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	+	{
3557	+	final CountingRejectingExecutor e = new CountingRejectingExecutor();
3558	+
3559	+	final CompletableFuture<Integer> complete = CompletableFuture.completedFuture(v);
3560	+	final CompletableFuture<Integer> incomplete = new CompletableFuture<>();
3561	+
3562	+	List<CompletableFuture<?>> futures = new ArrayList<>();
3563	+
3564	+	List<CompletableFuture<Integer>> srcs = new ArrayList<>();
3565	+	srcs.add(complete);
3566	+	srcs.add(incomplete);
3567	+
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));
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));
3580	+	fs.add(src.runAfterEitherAsync(src, () -> {}, e));
3581	+
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	+
3586	+	for (CompletableFuture<?> future : fs) {
3587	+	if (src.isDone())
3588	+	checkCompletedWithWrappedException(future, e.ex);
3589	+	else
3590	+	checkIncomplete(future);
3591	+	}
3592	+	futures.addAll(fs);
3593	+	}
3594	+
3595	+	{
3596	+	List<CompletableFuture<?>> fs = new ArrayList<>();
3597	+
3598	+	fs.add(complete.thenCombineAsync(incomplete, (x, y) -> x, e));
3599	+	fs.add(incomplete.thenCombineAsync(complete, (x, y) -> x, e));
3600	+
3601	+	fs.add(complete.thenAcceptBothAsync(incomplete, (x, y) -> {}, e));
3602	+	fs.add(incomplete.thenAcceptBothAsync(complete, (x, y) -> {}, e));
3603	+
3604	+	fs.add(complete.runAfterBothAsync(incomplete, () -> {}, e));
3605	+	fs.add(incomplete.runAfterBothAsync(complete, () -> {}, e));
3606	+
3607	+	for (CompletableFuture<?> future : fs)
3608	+	checkIncomplete(future);
3609	+	futures.addAll(fs);
3610	+	}
3611	+
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));
3617	+
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));
3623	+
3624	+	for (CompletableFuture<?> future : fs)
3625	+	checkCompletedWithWrappedException(future, e.ex);
3626	+	futures.addAll(fs);
3627	+	}
3628	+
3629	+	incomplete.complete(v);
3630	+
3631	+	for (CompletableFuture<?> future : futures)
3632	+	checkCompletedWithWrappedException(future, e.ex);
3633	+
3634	+	assertEquals(futures.size(), e.count.get());
3635	+	}}
3636	+
3637	+	/**
3638	+	* Test submissions to an executor that rejects all tasks, but
3639	+	* should never be invoked because the dependent future is
3640	+	* explicitly completed.
3641	+	*/
3642	+	public void testRejectingExecutorNeverInvoked() {
3643	+	for (Integer v : new Integer[] { 1, null })
3644	+	{
3645	+	final CountingRejectingExecutor e = new CountingRejectingExecutor();
3646	+
3647	+	final CompletableFuture<Integer> complete = CompletableFuture.completedFuture(v);
3648	+	final CompletableFuture<Integer> incomplete = new CompletableFuture<>();
3649	+
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));
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));
3661	+	fs.add(incomplete.runAfterEitherAsync(incomplete, () -> {}, e));
3662	+
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	+
3667	+	fs.add(complete.thenCombineAsync(incomplete, (x, y) -> x, e));
3668	+	fs.add(incomplete.thenCombineAsync(complete, (x, y) -> x, e));
3669	+
3670	+	fs.add(complete.thenAcceptBothAsync(incomplete, (x, y) -> {}, e));
3671	+	fs.add(incomplete.thenAcceptBothAsync(complete, (x, y) -> {}, e));
3672	+
3673	+	fs.add(complete.runAfterBothAsync(incomplete, () -> {}, e));
3674	+	fs.add(incomplete.runAfterBothAsync(complete, () -> {}, e));
3675	+
3676	+	for (CompletableFuture<?> future : fs)
3677	+	checkIncomplete(future);
3678	+
3679	+	for (CompletableFuture<?> future : fs)
3680	+	future.complete(null);
3681	+
3682	+	incomplete.complete(v);
3683	+
3684	+	for (CompletableFuture<?> future : fs)
3685	+	checkCompletedNormally(future, null);
3686	+
3687	+	assertEquals(0, e.count.get());
3688	+	}}
3689	+
3690	+	/**
3691		* toCompletableFuture returns this CompletableFuture.
3692		*/
3693		public void testToCompletableFuture() {
#	Line 3323 | 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 3355 | Line 3752 | public class CompletableFutureTest exten
3752		}
3753
3754		/**
3358	–	* failedFuture(null) throws NPE
3359	–	*/
3360	–	public void testFailedFuture_null() {
3361	–	try {
3362	–	CompletableFuture<Integer> f = CompletableFuture.failedFuture(null);
3363	–	shouldThrow();
3364	–	} catch (NullPointerException success) {}
3365	–	}
3366	–
3367	–	/**
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 3401 | 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 3418 | 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 3436 | 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 3460 | 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 3490 | 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 3506 | Line 3917 | public class CompletableFutureTest exten
3917		long timeoutMillis = timeoutMillis();
3918		CompletableFuture<Integer> f = new CompletableFuture<>();
3919		long startTime = System.nanoTime();
3920	<	f.orTimeout(timeoutMillis, MILLISECONDS);
3920	>	assertSame(f, f.orTimeout(timeoutMillis, MILLISECONDS));
3921		checkCompletedWithTimeoutException(f);
3922		assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
3923		}
#	Line 3521 | Line 3932 | public class CompletableFutureTest exten
3932		CompletableFuture<Integer> g = new CompletableFuture<>();
3933		long startTime = System.nanoTime();
3934		f.complete(v1);
3935	<	f.orTimeout(LONG_DELAY_MS, MILLISECONDS);
3936	<	g.orTimeout(LONG_DELAY_MS, MILLISECONDS);
3935	>	assertSame(f, f.orTimeout(LONG_DELAY_MS, MILLISECONDS));
3936	>	assertSame(g, g.orTimeout(LONG_DELAY_MS, MILLISECONDS));
3937		g.complete(v1);
3938		checkCompletedNormally(f, v1);
3939		checkCompletedNormally(g, v1);
#	Line 3537 | Line 3948 | public class CompletableFutureTest exten
3948		() -> testCompleteOnTimeout_timesOut(null));
3949		}
3950
3951	+	/**
3952	+	* completeOnTimeout completes with given value if not complete
3953	+	*/
3954		public void testCompleteOnTimeout_timesOut(Integer v) {
3955		long timeoutMillis = timeoutMillis();
3956		CompletableFuture<Integer> f = new CompletableFuture<>();
3957		long startTime = System.nanoTime();
3958	<	f.completeOnTimeout(v, timeoutMillis, MILLISECONDS);
3958	>	assertSame(f, f.completeOnTimeout(v, timeoutMillis, MILLISECONDS));
3959		assertSame(v, f.join());
3960		assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
3961		f.complete(99);         // should have no effect
#	Line 3558 | Line 3972 | public class CompletableFutureTest exten
3972		CompletableFuture<Integer> g = new CompletableFuture<>();
3973		long startTime = System.nanoTime();
3974		f.complete(v1);
3975	<	f.completeOnTimeout(-1, LONG_DELAY_MS, MILLISECONDS);
3976	<	g.completeOnTimeout(-1, LONG_DELAY_MS, MILLISECONDS);
3975	>	assertSame(f, f.completeOnTimeout(-1, LONG_DELAY_MS, MILLISECONDS));
3976	>	assertSame(g, g.completeOnTimeout(-1, LONG_DELAY_MS, MILLISECONDS));
3977		g.complete(v1);
3978		checkCompletedNormally(f, v1);
3979		checkCompletedNormally(g, v1);
#	Line 3610 | Line 4024 | public class CompletableFutureTest exten
4024		//--- tests of implementation details; not part of official tck ---
4025
4026		Object resultOf(CompletableFuture<?> f) {
4027	+	SecurityManager sm = System.getSecurityManager();
4028	+	if (sm != null) {
4029	+	try {
4030	+	System.setSecurityManager(null);
4031	+	} catch (SecurityException giveUp) {
4032	+	return "Reflection not available";
4033	+	}
4034	+	}
4035	+
4036		try {
4037		java.lang.reflect.Field resultField
4038		= CompletableFuture.class.getDeclaredField("result");
4039		resultField.setAccessible(true);
4040		return resultField.get(f);
4041	<	} catch (Throwable t) { throw new AssertionError(t); }
4041	>	} catch (Throwable t) {
4042	>	throw new AssertionError(t);
4043	>	} finally {
4044	>	if (sm != null) System.setSecurityManager(sm);
4045	>	}
4046		}
4047
4048		public void testExceptionPropagationReusesResultObject() {
#	Line 3626 | 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.thenAcceptBoth(y, v42, new SubtractAction(m)));
4073	<	funs.add((y) -> m.thenCombine(y, v42, new SubtractFunction(m)));
4074	<
4075	<	funs.add((y) -> m.whenComplete(y, (Integer x, Throwable t) -> {}));
4076	<
4077	<	funs.add((y) -> m.thenCompose(y, new CompletableFutureInc(m)));
4078	<
4079	<	funs.add((y) -> CompletableFuture.allOf(new CompletableFuture<?>[] {y, v42}));
4080	<	funs.add((y) -> CompletableFuture.anyOf(new CompletableFuture<?>[] {y, incomplete}));
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 3662 | 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 3676 | 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 3687 | 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 3698 | 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 3724 | 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 3737 | 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)
4186	<	args[i] = 0;
4187	<	else if (parameterTypes[i] == long.class)
4188	<	args[i] = 0L;
4189	<	}
3747	<	try {
3748	<	method.invoke(minimalStage, args);
3749	<	bugs.add(method);
3750	<	}
3751	<	catch (java.lang.reflect.InvocationTargetException expected) {
3752	<	if (! (expected.getCause() instanceof UnsupportedOperationException)) {
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	>	for (CompletionStage<Integer> stage : stages) {
4188	>	try {
4189	>	method.invoke(stage, args);
4190		bugs.add(method);
3754	–	// 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		}
3757	–	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"); }
4333	>	}
4334	>	// "return", "unit"
4335	>	static <T> CompletableFuture<T> unit(T value) {
4336	>	return completedFuture(value);
4337	>	}
4338	>	// monadic zero ?
4339	>	static <T> CompletableFuture<T> zero() {
4340	>	return failedFuture(new ZeroException());
4341	>	}
4342	>	// >=>
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);
4347	>	}
4348	>
4349	>	static void assertZero(CompletableFuture<?> f) {
4350	>	try {
4351	>	f.getNow(null);
4352	>	throw new AssertionError("should throw");
4353	>	} catch (CompletionException success) {
4354	>	assertTrue(success.getCause() instanceof ZeroException);
4355	>	}
4356	>	}
4357	>
4358	>	static <T> void assertFutureEquals(CompletableFuture<T> f,
4359	>	CompletableFuture<T> g) {
4360	>	T fval = null, gval = null;
4361	>	Throwable fex = null, gex = null;
4362	>
4363	>	try { fval = f.get(); }
4364	>	catch (ExecutionException ex) { fex = ex.getCause(); }
4365	>	catch (Throwable ex) { fex = ex; }
4366	>
4367	>	try { gval = g.get(); }
4368	>	catch (ExecutionException ex) { gex = ex.getCause(); }
4369	>	catch (Throwable ex) { gex = ex; }
4370	>
4371	>	if (fex != null || gex != null)
4372	>	assertSame(fex.getClass(), gex.getClass());
4373	>	else
4374	>	assertEquals(fval, gval);
4375	>	}
4376	>
4377	>	static class PlusFuture<T> extends CompletableFuture<T> {
4378	>	AtomicReference<Throwable> firstFailure = new AtomicReference<>(null);
4379	>	}
4380	>
4381	>	/** Implements "monadic plus". */
4382	>	static <T> CompletableFuture<T> plus(CompletableFuture<? extends T> f,
4383	>	CompletableFuture<? extends T> g) {
4384	>	PlusFuture<T> plus = new PlusFuture<T>();
4385	>	BiConsumer<T, Throwable> action = (T result, Throwable ex) -> {
4386	>	try {
4387	>	if (ex == null) {
4388	>	if (plus.complete(result))
4389	>	if (plus.firstFailure.get() != null)
4390	>	plus.firstFailure.set(null);
4391	>	}
4392	>	else if (plus.firstFailure.compareAndSet(null, ex)) {
4393	>	if (plus.isDone())
4394	>	plus.firstFailure.set(null);
4395	>	}
4396	>	else {
4397	>	// first failure has precedence
4398	>	Throwable first = plus.firstFailure.getAndSet(null);
4399	>
4400	>	// may fail with "Self-suppression not permitted"
4401	>	try { first.addSuppressed(ex); }
4402	>	catch (Exception ignored) {}
4403	>
4404	>	plus.completeExceptionally(first);
4405	>	}
4406	>	} catch (Throwable unexpected) {
4407	>	plus.completeExceptionally(unexpected);
4408	>	}
4409	>	};
4410	>	f.whenComplete(action);
4411	>	g.whenComplete(action);
4412	>	return plus;
4413	>	}
4414	>	}
4415	>
4416	>	/**
4417	>	* CompletableFuture is an additive monad - sort of.
4418	>	* https://en.wikipedia.org/wiki/Monad_(functional_programming)#Additive_monads
4419	>	*/
4420	>	public void testAdditiveMonad() throws Throwable {
4421	>	Function<Long, CompletableFuture<Long>> unit = Monad::unit;
4422	>	CompletableFuture<Long> zero = Monad.zero();
4423	>
4424	>	// Some mutually non-commutative functions
4425	>	Function<Long, CompletableFuture<Long>> triple
4426	>	= x -> Monad.unit(3 * x);
4427	>	Function<Long, CompletableFuture<Long>> inc
4428	>	= x -> Monad.unit(x + 1);
4429	>
4430	>	// unit is a right identity: m >>= unit === m
4431	>	Monad.assertFutureEquals(inc.apply(5L).thenCompose(unit),
4432	>	inc.apply(5L));
4433	>	// unit is a left identity: (unit x) >>= f === f x
4434	>	Monad.assertFutureEquals(unit.apply(5L).thenCompose(inc),
4435	>	inc.apply(5L));
4436	>
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)));
4441	>
4442	>	// The case for CompletableFuture as an additive monad is weaker...
4443	>
4444	>	// zero is a monadic zero
4445	>	Monad.assertZero(zero);
4446	>
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));
4451	>
4452	>	// f plus zero === f
4453	>	Monad.assertFutureEquals(Monad.unit(5L),
4454	>	Monad.plus(Monad.unit(5L), zero));
4455	>	// zero plus f === f
4456	>	Monad.assertFutureEquals(Monad.unit(5L),
4457	>	Monad.plus(zero, Monad.unit(5L)));
4458	>	// zero plus zero === zero
4459	>	Monad.assertZero(Monad.plus(zero, zero));
4460	>	{
4461	>	CompletableFuture<Long> f = Monad.plus(Monad.unit(5L),
4462	>	Monad.unit(8L));
4463	>	// non-determinism
4464	>	assertTrue(f.get() == 5L || f.get() == 8L);
4465	>	}
4466	>
4467	>	CompletableFuture<Long> godot = new CompletableFuture<>();
4468	>	// f plus godot === f (doesn't wait for godot)
4469	>	Monad.assertFutureEquals(Monad.unit(5L),
4470	>	Monad.plus(Monad.unit(5L), godot));
4471	>	// godot plus f === f (doesn't wait for godot)
4472	>	Monad.assertFutureEquals(Monad.unit(5L),
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 = 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());
4512	>
4513	>	head.runAfterBoth(complete, () -> count.getAndIncrement());
4514	>	head.thenAcceptBoth(complete, (x, y) -> count.getAndIncrement());
4515	>	head.thenCombine(complete, (x, y) -> count.getAndIncrement());
4516	>	complete.runAfterBoth(head, () -> count.getAndIncrement());
4517	>	complete.thenAcceptBoth(head, (x, y) -> count.getAndIncrement());
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());
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());
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) {
#	Line 3784 | 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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