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Comparing jsr166/src/test/tck/CompletableFutureTest.java (file contents):
Revision 1.98 by jsr166, Wed Dec 31 19:05:42 2014 UTC vs.
Revision 1.186 by jsr166, Mon Jul 3 20:55:45 2017 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;
15	+
16	+	import java.util.stream.Collectors;
17	+	import java.util.stream.Stream;
18
19		import java.util.ArrayList;
20	+	import java.util.Arrays;
21		import java.util.List;
22		import java.util.Objects;
23	+	import java.util.Set;
24		import java.util.concurrent.Callable;
25		import java.util.concurrent.CancellationException;
26		import java.util.concurrent.CompletableFuture;
#	Line 20 | 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;
35		import java.util.concurrent.atomic.AtomicInteger;
36	+	import java.util.concurrent.atomic.AtomicReference;
37		import java.util.function.BiConsumer;
38		import java.util.function.BiFunction;
39		import java.util.function.Consumer;
40		import java.util.function.Function;
41	+	import java.util.function.Predicate;
42		import java.util.function.Supplier;
43
44	+	import junit.framework.AssertionFailedError;
45		import junit.framework.Test;
46		import junit.framework.TestSuite;
47
48		public class CompletableFutureTest extends JSR166TestCase {
49
50		public static void main(String[] args) {
51	<	junit.textui.TestRunner.run(suite());
51	>	main(suite(), args);
52		}
53		public static Test suite() {
54		return new TestSuite(CompletableFutureTest.class);
#	Line 45 | Line 59 | public class CompletableFutureTest exten
59		void checkIncomplete(CompletableFuture<?> f) {
60		assertFalse(f.isDone());
61		assertFalse(f.isCancelled());
62	<	assertTrue(f.toString().contains("[Not completed]"));
62	>	assertTrue(f.toString().contains("Not completed"));
63		try {
64		assertNull(f.getNow(null));
65		} catch (Throwable fail) { threadUnexpectedException(fail); }
66		try {
67	<	f.get(0L, SECONDS);
67	>	f.get(randomExpiredTimeout(), randomTimeUnit());
68		shouldThrow();
69		}
70		catch (TimeoutException success) {}
#	Line 62 | Line 76 | public class CompletableFutureTest exten
76
77		try {
78		assertEquals(value, f.join());
65	–	} catch (Throwable fail) { threadUnexpectedException(fail); }
66	–	try {
79		assertEquals(value, f.getNow(null));
68	–	} catch (Throwable fail) { threadUnexpectedException(fail); }
69	–	try {
80		assertEquals(value, f.get());
81		} catch (Throwable fail) { threadUnexpectedException(fail); }
82		assertTrue(f.isDone());
#	Line 75 | Line 85 | public class CompletableFutureTest exten
85		assertTrue(f.toString().contains("[Completed normally]"));
86		}
87
88	<	void checkCompletedWithWrappedCFException(CompletableFuture<?> f) {
88	>	/**
89	>	* Returns the "raw" internal exceptional completion of f,
90	>	* without any additional wrapping with CompletionException.
91	>	*/
92	>	Throwable exceptionalCompletion(CompletableFuture<?> f) {
93	>	// handle (and whenComplete and exceptionally) can distinguish
94	>	// between "direct" and "wrapped" exceptional completion
95	>	return f.handle((u, t) -> t).join();
96	>	}
97	>
98	>	void checkCompletedExceptionally(CompletableFuture<?> f,
99	>	boolean wrapped,
100	>	Consumer<Throwable> checker) {
101	>	Throwable cause = exceptionalCompletion(f);
102	>	if (wrapped) {
103	>	assertTrue(cause instanceof CompletionException);
104	>	cause = cause.getCause();
105	>	}
106	>	checker.accept(cause);
107	>
108		long startTime = System.nanoTime();
80	–	long timeoutMillis = LONG_DELAY_MS;
109		try {
110	<	f.get(timeoutMillis, MILLISECONDS);
110	>	f.get(LONG_DELAY_MS, MILLISECONDS);
111		shouldThrow();
112		} catch (ExecutionException success) {
113	<	assertTrue(success.getCause() instanceof CFException);
113	>	assertSame(cause, success.getCause());
114		} catch (Throwable fail) { threadUnexpectedException(fail); }
115	<	assertTrue(millisElapsedSince(startTime) < timeoutMillis/2);
115	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS / 2);
116
117		try {
118		f.join();
119		shouldThrow();
120		} catch (CompletionException success) {
121	<	assertTrue(success.getCause() instanceof CFException);
122	<	}
121	>	assertSame(cause, success.getCause());
122	>	} catch (Throwable fail) { threadUnexpectedException(fail); }
123	>
124		try {
125		f.getNow(null);
126		shouldThrow();
127		} catch (CompletionException success) {
128	<	assertTrue(success.getCause() instanceof CFException);
129	<	}
128	>	assertSame(cause, success.getCause());
129	>	} catch (Throwable fail) { threadUnexpectedException(fail); }
130	>
131		try {
132		f.get();
133		shouldThrow();
134		} catch (ExecutionException success) {
135	<	assertTrue(success.getCause() instanceof CFException);
135	>	assertSame(cause, success.getCause());
136		} catch (Throwable fail) { threadUnexpectedException(fail); }
137	<	assertTrue(f.isDone());
137	>
138		assertFalse(f.isCancelled());
139	+	assertTrue(f.isDone());
140	+	assertTrue(f.isCompletedExceptionally());
141		assertTrue(f.toString().contains("[Completed exceptionally]"));
142		}
143
144	<	<U> void checkCompletedExceptionallyWithRootCause(CompletableFuture<U> f,
145	<	Throwable ex) {
146	<	long startTime = System.nanoTime();
147	<	long timeoutMillis = LONG_DELAY_MS;
116	<	try {
117	<	f.get(timeoutMillis, MILLISECONDS);
118	<	shouldThrow();
119	<	} catch (ExecutionException success) {
120	<	assertSame(ex, success.getCause());
121	<	} catch (Throwable fail) { threadUnexpectedException(fail); }
122	<	assertTrue(millisElapsedSince(startTime) < timeoutMillis/2);
144	>	void checkCompletedWithWrappedCFException(CompletableFuture<?> f) {
145	>	checkCompletedExceptionally(f, true,
146	>	t -> assertTrue(t instanceof CFException));
147	>	}
148
149	<	try {
150	<	f.join();
151	<	shouldThrow();
152	<	} catch (CompletionException success) {
128	<	assertSame(ex, success.getCause());
129	<	}
130	<	try {
131	<	f.getNow(null);
132	<	shouldThrow();
133	<	} catch (CompletionException success) {
134	<	assertSame(ex, success.getCause());
135	<	}
136	<	try {
137	<	f.get();
138	<	shouldThrow();
139	<	} catch (ExecutionException success) {
140	<	assertSame(ex, success.getCause());
141	<	} catch (Throwable fail) { threadUnexpectedException(fail); }
149	>	void checkCompletedWithWrappedCancellationException(CompletableFuture<?> f) {
150	>	checkCompletedExceptionally(f, true,
151	>	t -> assertTrue(t instanceof CancellationException));
152	>	}
153
154	<	assertTrue(f.isDone());
155	<	assertFalse(f.isCancelled());
156	<	assertTrue(f.toString().contains("[Completed exceptionally]"));
154	>	void checkCompletedWithTimeoutException(CompletableFuture<?> f) {
155	>	checkCompletedExceptionally(f, false,
156	>	t -> assertTrue(t instanceof TimeoutException));
157		}
158
159	<	<U> void checkCompletedWithWrappedException(CompletableFuture<U> f,
160	<	Throwable ex) {
161	<	checkCompletedExceptionallyWithRootCause(f, ex);
151	<	try {
152	<	CompletableFuture<Throwable> spy = f.handle
153	<	((U u, Throwable t) -> t);
154	<	assertTrue(spy.join() instanceof CompletionException);
155	<	assertSame(ex, spy.join().getCause());
156	<	} catch (Throwable fail) { threadUnexpectedException(fail); }
159	>	void checkCompletedWithWrappedException(CompletableFuture<?> f,
160	>	Throwable ex) {
161	>	checkCompletedExceptionally(f, true, t -> assertSame(t, ex));
162		}
163
164	<	<U> void checkCompletedExceptionally(CompletableFuture<U> f, Throwable ex) {
165	<	checkCompletedExceptionallyWithRootCause(f, ex);
161	<	try {
162	<	CompletableFuture<Throwable> spy = f.handle
163	<	((U u, Throwable t) -> t);
164	<	assertSame(ex, spy.join());
165	<	} catch (Throwable fail) { threadUnexpectedException(fail); }
164	>	void checkCompletedExceptionally(CompletableFuture<?> f, Throwable ex) {
165	>	checkCompletedExceptionally(f, false, t -> assertSame(t, ex));
166		}
167
168		void checkCancelled(CompletableFuture<?> f) {
169		long startTime = System.nanoTime();
170	–	long timeoutMillis = LONG_DELAY_MS;
170		try {
171	<	f.get(timeoutMillis, MILLISECONDS);
171	>	f.get(LONG_DELAY_MS, MILLISECONDS);
172		shouldThrow();
173		} catch (CancellationException success) {
174		} catch (Throwable fail) { threadUnexpectedException(fail); }
175	<	assertTrue(millisElapsedSince(startTime) < timeoutMillis/2);
175	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS / 2);
176
177		try {
178		f.join();
#	Line 188 | Line 187 | public class CompletableFutureTest exten
187		shouldThrow();
188		} catch (CancellationException success) {
189		} catch (Throwable fail) { threadUnexpectedException(fail); }
191	–	assertTrue(f.isDone());
192	–	assertTrue(f.isCompletedExceptionally());
193	–	assertTrue(f.isCancelled());
194	–	assertTrue(f.toString().contains("[Completed exceptionally]"));
195	–	}
190
191	<	void checkCompletedWithWrappedCancellationException(CompletableFuture<?> f) {
198	<	long startTime = System.nanoTime();
199	<	long timeoutMillis = LONG_DELAY_MS;
200	<	try {
201	<	f.get(timeoutMillis, MILLISECONDS);
202	<	shouldThrow();
203	<	} catch (ExecutionException success) {
204	<	assertTrue(success.getCause() instanceof CancellationException);
205	<	} catch (Throwable fail) { threadUnexpectedException(fail); }
206	<	assertTrue(millisElapsedSince(startTime) < timeoutMillis/2);
191	>	assertTrue(exceptionalCompletion(f) instanceof CancellationException);
192
208	–	try {
209	–	f.join();
210	–	shouldThrow();
211	–	} catch (CompletionException success) {
212	–	assertTrue(success.getCause() instanceof CancellationException);
213	–	}
214	–	try {
215	–	f.getNow(null);
216	–	shouldThrow();
217	–	} catch (CompletionException success) {
218	–	assertTrue(success.getCause() instanceof CancellationException);
219	–	}
220	–	try {
221	–	f.get();
222	–	shouldThrow();
223	–	} catch (ExecutionException success) {
224	–	assertTrue(success.getCause() instanceof CancellationException);
225	–	} catch (Throwable fail) { threadUnexpectedException(fail); }
193		assertTrue(f.isDone());
227	–	assertFalse(f.isCancelled());
194		assertTrue(f.isCompletedExceptionally());
195	+	assertTrue(f.isCancelled());
196		assertTrue(f.toString().contains("[Completed exceptionally]"));
197		}
198
#	Line 273 | Line 240 | public class CompletableFutureTest exten
240		{
241		CompletableFuture<Integer> f = new CompletableFuture<>();
242		checkIncomplete(f);
243	<	assertTrue(f.cancel(true));
244	<	assertTrue(f.cancel(true));
243	>	assertTrue(f.cancel(mayInterruptIfRunning));
244	>	assertTrue(f.cancel(mayInterruptIfRunning));
245	>	assertTrue(f.cancel(!mayInterruptIfRunning));
246		checkCancelled(f);
247		}}
248
#	Line 389 | Line 357 | public class CompletableFutureTest exten
357		checkCompletedNormally(f, "test");
358		}
359
360	<	abstract class CheckedAction {
360	>	abstract static class CheckedAction {
361		int invocationCount = 0;
362		final ExecutionMode m;
363		CheckedAction(ExecutionMode m) { this.m = m; }
#	Line 401 | Line 369 | public class CompletableFutureTest exten
369		void assertInvoked() { assertEquals(1, invocationCount); }
370		}
371
372	<	abstract class CheckedIntegerAction extends CheckedAction {
372	>	abstract static class CheckedIntegerAction extends CheckedAction {
373		Integer value;
374		CheckedIntegerAction(ExecutionMode m) { super(m); }
375		void assertValue(Integer expected) {
#	Line 410 | Line 378 | public class CompletableFutureTest exten
378		}
379		}
380
381	<	class IntegerSupplier extends CheckedAction
381	>	static class IntegerSupplier extends CheckedAction
382		implements Supplier<Integer>
383		{
384		final Integer value;
#	Line 429 | Line 397 | public class CompletableFutureTest exten
397		return (x == null) ? null : x + 1;
398		}
399
400	<	class NoopConsumer extends CheckedIntegerAction
400	>	static class NoopConsumer extends CheckedIntegerAction
401		implements Consumer<Integer>
402		{
403		NoopConsumer(ExecutionMode m) { super(m); }
#	Line 439 | Line 407 | public class CompletableFutureTest exten
407		}
408		}
409
410	<	class IncFunction extends CheckedIntegerAction
410	>	static class IncFunction extends CheckedIntegerAction
411		implements Function<Integer,Integer>
412		{
413		IncFunction(ExecutionMode m) { super(m); }
#	Line 457 | Line 425 | public class CompletableFutureTest exten
425		- ((y == null) ? 99 : y.intValue());
426		}
427
428	<	class SubtractAction extends CheckedIntegerAction
428	>	static class SubtractAction extends CheckedIntegerAction
429		implements BiConsumer<Integer, Integer>
430		{
431		SubtractAction(ExecutionMode m) { super(m); }
#	Line 467 | Line 435 | public class CompletableFutureTest exten
435		}
436		}
437
438	<	class SubtractFunction extends CheckedIntegerAction
438	>	static class SubtractFunction extends CheckedIntegerAction
439		implements BiFunction<Integer, Integer, Integer>
440		{
441		SubtractFunction(ExecutionMode m) { super(m); }
#	Line 477 | Line 445 | public class CompletableFutureTest exten
445		}
446		}
447
448	<	class Noop extends CheckedAction implements Runnable {
448	>	static class Noop extends CheckedAction implements Runnable {
449		Noop(ExecutionMode m) { super(m); }
450		public void run() {
451		invoked();
452		}
453		}
454
455	<	class FailingSupplier extends CheckedAction
455	>	static class FailingSupplier extends CheckedAction
456		implements Supplier<Integer>
457		{
458	<	FailingSupplier(ExecutionMode m) { super(m); }
458	>	final CFException ex;
459	>	FailingSupplier(ExecutionMode m) { super(m); ex = new CFException(); }
460		public Integer get() {
461		invoked();
462	<	throw new CFException();
462	>	throw ex;
463		}
464		}
465
466	<	class FailingConsumer extends CheckedIntegerAction
466	>	static class FailingConsumer extends CheckedIntegerAction
467		implements Consumer<Integer>
468		{
469	<	FailingConsumer(ExecutionMode m) { super(m); }
469	>	final CFException ex;
470	>	FailingConsumer(ExecutionMode m) { super(m); ex = new CFException(); }
471		public void accept(Integer x) {
472		invoked();
473		value = x;
474	<	throw new CFException();
474	>	throw ex;
475		}
476		}
477
478	<	class FailingBiConsumer extends CheckedIntegerAction
478	>	static class FailingBiConsumer extends CheckedIntegerAction
479		implements BiConsumer<Integer, Integer>
480		{
481	<	FailingBiConsumer(ExecutionMode m) { super(m); }
481	>	final CFException ex;
482	>	FailingBiConsumer(ExecutionMode m) { super(m); ex = new CFException(); }
483		public void accept(Integer x, Integer y) {
484		invoked();
485		value = subtract(x, y);
486	<	throw new CFException();
486	>	throw ex;
487		}
488		}
489
490	<	class FailingFunction extends CheckedIntegerAction
490	>	static class FailingFunction extends CheckedIntegerAction
491		implements Function<Integer, Integer>
492		{
493	<	FailingFunction(ExecutionMode m) { super(m); }
493	>	final CFException ex;
494	>	FailingFunction(ExecutionMode m) { super(m); ex = new CFException(); }
495		public Integer apply(Integer x) {
496		invoked();
497		value = x;
498	<	throw new CFException();
498	>	throw ex;
499		}
500		}
501
502	<	class FailingBiFunction extends CheckedIntegerAction
502	>	static class FailingBiFunction extends CheckedIntegerAction
503		implements BiFunction<Integer, Integer, Integer>
504		{
505	<	FailingBiFunction(ExecutionMode m) { super(m); }
505	>	final CFException ex;
506	>	FailingBiFunction(ExecutionMode m) { super(m); ex = new CFException(); }
507		public Integer apply(Integer x, Integer y) {
508		invoked();
509		value = subtract(x, y);
510	<	throw new CFException();
510	>	throw ex;
511		}
512		}
513
514	<	class FailingRunnable extends CheckedAction implements Runnable {
515	<	FailingRunnable(ExecutionMode m) { super(m); }
514	>	static class FailingRunnable extends CheckedAction implements Runnable {
515	>	final CFException ex;
516	>	FailingRunnable(ExecutionMode m) { super(m); ex = new CFException(); }
517		public void run() {
518		invoked();
519	<	throw new CFException();
519	>	throw ex;
520		}
521		}
522
523	<
550	<	class CompletableFutureInc extends CheckedIntegerAction
523	>	static class CompletableFutureInc extends CheckedIntegerAction
524		implements Function<Integer, CompletableFuture<Integer>>
525		{
526		CompletableFutureInc(ExecutionMode m) { super(m); }
#	Line 560 | Line 533 | public class CompletableFutureTest exten
533		}
534		}
535
536	<	class FailingCompletableFutureFunction extends CheckedIntegerAction
536	>	static class FailingCompletableFutureFunction extends CheckedIntegerAction
537		implements Function<Integer, CompletableFuture<Integer>>
538		{
539	<	FailingCompletableFutureFunction(ExecutionMode m) { super(m); }
539	>	final CFException ex;
540	>	FailingCompletableFutureFunction(ExecutionMode m) { super(m); ex = new CFException(); }
541		public CompletableFuture<Integer> apply(Integer x) {
542		invoked();
543		value = x;
544	<	throw new CFException();
544	>	throw ex;
545	>	}
546	>	}
547	>
548	>	static class CountingRejectingExecutor implements Executor {
549	>	final RejectedExecutionException ex = new RejectedExecutionException();
550	>	final AtomicInteger count = new AtomicInteger(0);
551	>	public void execute(Runnable r) {
552	>	count.getAndIncrement();
553	>	throw ex;
554		}
555		}
556
#	Line 869 | Line 852 | public class CompletableFutureTest exten
852		if (!createIncomplete) assertTrue(f.complete(v1));
853		final CompletableFuture<Integer> g = f.exceptionally
854		((Throwable t) -> {
872	–	// Should not be called
855		a.getAndIncrement();
856	<	throw new AssertionError();
856	>	threadFail("should not be called");
857	>	return null;            // unreached
858		});
859		if (createIncomplete) assertTrue(f.complete(v1));
860
#	Line 905 | Line 888 | public class CompletableFutureTest exten
888		assertEquals(1, a.get());
889		}}
890
891	+	/**
892	+	* If an "exceptionally action" throws an exception, it completes
893	+	* exceptionally with that exception
894	+	*/
895		public void testExceptionally_exceptionalCompletionActionFailed() {
896		for (boolean createIncomplete : new boolean[] { true, false })
910	–	for (Integer v1 : new Integer[] { 1, null })
897		{
898		final AtomicInteger a = new AtomicInteger(0);
899		final CFException ex1 = new CFException();
#	Line 924 | Line 910 | public class CompletableFutureTest exten
910		if (createIncomplete) f.completeExceptionally(ex1);
911
912		checkCompletedWithWrappedException(g, ex2);
913	+	checkCompletedExceptionally(f, ex1);
914		assertEquals(1, a.get());
915		}}
916
#	Line 931 | Line 918 | public class CompletableFutureTest exten
918		* whenComplete action executes on normal completion, propagating
919		* source result.
920		*/
921	<	public void testWhenComplete_normalCompletion1() {
921	>	public void testWhenComplete_normalCompletion() {
922		for (ExecutionMode m : ExecutionMode.values())
923		for (boolean createIncomplete : new boolean[] { true, false })
924		for (Integer v1 : new Integer[] { 1, null })
#	Line 941 | Line 928 | public class CompletableFutureTest exten
928		if (!createIncomplete) assertTrue(f.complete(v1));
929		final CompletableFuture<Integer> g = m.whenComplete
930		(f,
931	<	(Integer x, Throwable t) -> {
931	>	(Integer result, Throwable t) -> {
932		m.checkExecutionMode();
933	<	threadAssertSame(x, v1);
933	>	threadAssertSame(result, v1);
934		threadAssertNull(t);
935		a.getAndIncrement();
936		});
#	Line 961 | Line 948 | public class CompletableFutureTest exten
948		public void testWhenComplete_exceptionalCompletion() {
949		for (ExecutionMode m : ExecutionMode.values())
950		for (boolean createIncomplete : new boolean[] { true, false })
964	–	for (Integer v1 : new Integer[] { 1, null })
951		{
952		final AtomicInteger a = new AtomicInteger(0);
953		final CFException ex = new CFException();
#	Line 969 | Line 955 | public class CompletableFutureTest exten
955		if (!createIncomplete) f.completeExceptionally(ex);
956		final CompletableFuture<Integer> g = m.whenComplete
957		(f,
958	<	(Integer x, Throwable t) -> {
958	>	(Integer result, Throwable t) -> {
959		m.checkExecutionMode();
960	<	threadAssertNull(x);
960	>	threadAssertNull(result);
961		threadAssertSame(t, ex);
962		a.getAndIncrement();
963		});
#	Line 996 | Line 982 | public class CompletableFutureTest exten
982		if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
983		final CompletableFuture<Integer> g = m.whenComplete
984		(f,
985	<	(Integer x, Throwable t) -> {
985	>	(Integer result, Throwable t) -> {
986		m.checkExecutionMode();
987	<	threadAssertNull(x);
987	>	threadAssertNull(result);
988		threadAssertTrue(t instanceof CancellationException);
989		a.getAndIncrement();
990		});
#	Line 1013 | Line 999 | public class CompletableFutureTest exten
999		* If a whenComplete action throws an exception when triggered by
1000		* a normal completion, it completes exceptionally
1001		*/
1002	<	public void testWhenComplete_actionFailed() {
1002	>	public void testWhenComplete_sourceCompletedNormallyActionFailed() {
1003		for (boolean createIncomplete : new boolean[] { true, false })
1004		for (ExecutionMode m : ExecutionMode.values())
1005		for (Integer v1 : new Integer[] { 1, null })
#	Line 1024 | Line 1010 | public class CompletableFutureTest exten
1010		if (!createIncomplete) assertTrue(f.complete(v1));
1011		final CompletableFuture<Integer> g = m.whenComplete
1012		(f,
1013	<	(Integer x, Throwable t) -> {
1013	>	(Integer result, Throwable t) -> {
1014		m.checkExecutionMode();
1015	<	threadAssertSame(x, v1);
1015	>	threadAssertSame(result, v1);
1016		threadAssertNull(t);
1017		a.getAndIncrement();
1018		throw ex;
#	Line 1041 | Line 1027 | public class CompletableFutureTest exten
1027		/**
1028		* If a whenComplete action throws an exception when triggered by
1029		* a source completion that also throws an exception, the source
1030	<	* exception takes precedence.
1030	>	* exception takes precedence (unlike handle)
1031		*/
1032	<	public void testWhenComplete_actionFailedSourceFailed() {
1032	>	public void testWhenComplete_sourceFailedActionFailed() {
1033		for (boolean createIncomplete : new boolean[] { true, false })
1034		for (ExecutionMode m : ExecutionMode.values())
1049	–	for (Integer v1 : new Integer[] { 1, null })
1035		{
1036		final AtomicInteger a = new AtomicInteger(0);
1037		final CFException ex1 = new CFException();
#	Line 1056 | Line 1041 | public class CompletableFutureTest exten
1041		if (!createIncomplete) f.completeExceptionally(ex1);
1042		final CompletableFuture<Integer> g = m.whenComplete
1043		(f,
1044	<	(Integer x, Throwable t) -> {
1044	>	(Integer result, Throwable t) -> {
1045		m.checkExecutionMode();
1046		threadAssertSame(t, ex1);
1047	<	threadAssertNull(x);
1047	>	threadAssertNull(result);
1048		a.getAndIncrement();
1049		throw ex2;
1050		});
#	Line 1067 | Line 1052 | public class CompletableFutureTest exten
1052
1053		checkCompletedWithWrappedException(g, ex1);
1054		checkCompletedExceptionally(f, ex1);
1055	+	if (testImplementationDetails) {
1056	+	assertEquals(1, ex1.getSuppressed().length);
1057	+	assertSame(ex2, ex1.getSuppressed()[0]);
1058	+	}
1059		assertEquals(1, a.get());
1060		}}
1061
#	Line 1084 | Line 1073 | public class CompletableFutureTest exten
1073		if (!createIncomplete) assertTrue(f.complete(v1));
1074		final CompletableFuture<Integer> g = m.handle
1075		(f,
1076	<	(Integer x, Throwable t) -> {
1076	>	(Integer result, Throwable t) -> {
1077		m.checkExecutionMode();
1078	<	threadAssertSame(x, v1);
1078	>	threadAssertSame(result, v1);
1079		threadAssertNull(t);
1080		a.getAndIncrement();
1081		return inc(v1);
#	Line 1113 | Line 1102 | public class CompletableFutureTest exten
1102		if (!createIncomplete) f.completeExceptionally(ex);
1103		final CompletableFuture<Integer> g = m.handle
1104		(f,
1105	<	(Integer x, Throwable t) -> {
1105	>	(Integer result, Throwable t) -> {
1106		m.checkExecutionMode();
1107	<	threadAssertNull(x);
1107	>	threadAssertNull(result);
1108		threadAssertSame(t, ex);
1109		a.getAndIncrement();
1110		return v1;
#	Line 1142 | Line 1131 | public class CompletableFutureTest exten
1131		if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
1132		final CompletableFuture<Integer> g = m.handle
1133		(f,
1134	<	(Integer x, Throwable t) -> {
1134	>	(Integer result, Throwable t) -> {
1135		m.checkExecutionMode();
1136	<	threadAssertNull(x);
1136	>	threadAssertNull(result);
1137		threadAssertTrue(t instanceof CancellationException);
1138		a.getAndIncrement();
1139		return v1;
#	Line 1157 | Line 1146 | public class CompletableFutureTest exten
1146		}}
1147
1148		/**
1149	<	* handle result completes exceptionally if action does
1149	>	* If a "handle action" throws an exception when triggered by
1150	>	* a normal completion, it completes exceptionally
1151		*/
1152	<	public void testHandle_sourceFailedActionFailed() {
1152	>	public void testHandle_sourceCompletedNormallyActionFailed() {
1153		for (ExecutionMode m : ExecutionMode.values())
1154		for (boolean createIncomplete : new boolean[] { true, false })
1155	+	for (Integer v1 : new Integer[] { 1, null })
1156		{
1157		final CompletableFuture<Integer> f = new CompletableFuture<>();
1158		final AtomicInteger a = new AtomicInteger(0);
1159	<	final CFException ex1 = new CFException();
1160	<	final CFException ex2 = new CFException();
1170	<	if (!createIncomplete) f.completeExceptionally(ex1);
1159	>	final CFException ex = new CFException();
1160	>	if (!createIncomplete) assertTrue(f.complete(v1));
1161		final CompletableFuture<Integer> g = m.handle
1162		(f,
1163	<	(Integer x, Throwable t) -> {
1163	>	(Integer result, Throwable t) -> {
1164		m.checkExecutionMode();
1165	<	threadAssertNull(x);
1166	<	threadAssertSame(ex1, t);
1165	>	threadAssertSame(result, v1);
1166	>	threadAssertNull(t);
1167		a.getAndIncrement();
1168	<	throw ex2;
1168	>	throw ex;
1169		});
1170	<	if (createIncomplete) f.completeExceptionally(ex1);
1170	>	if (createIncomplete) assertTrue(f.complete(v1));
1171
1172	<	checkCompletedWithWrappedException(g, ex2);
1173	<	checkCompletedExceptionally(f, ex1);
1172	>	checkCompletedWithWrappedException(g, ex);
1173	>	checkCompletedNormally(f, v1);
1174		assertEquals(1, a.get());
1175		}}
1176
1177	<	public void testHandle_sourceCompletedNormallyActionFailed() {
1178	<	for (ExecutionMode m : ExecutionMode.values())
1177	>	/**
1178	>	* If a "handle action" throws an exception when triggered by
1179	>	* a source completion that also throws an exception, the action
1180	>	* exception takes precedence (unlike whenComplete)
1181	>	*/
1182	>	public void testHandle_sourceFailedActionFailed() {
1183		for (boolean createIncomplete : new boolean[] { true, false })
1184	<	for (Integer v1 : new Integer[] { 1, null })
1184	>	for (ExecutionMode m : ExecutionMode.values())
1185		{
1192	–	final CompletableFuture<Integer> f = new CompletableFuture<>();
1186		final AtomicInteger a = new AtomicInteger(0);
1187	<	final CFException ex = new CFException();
1188	<	if (!createIncomplete) assertTrue(f.complete(v1));
1187	>	final CFException ex1 = new CFException();
1188	>	final CFException ex2 = new CFException();
1189	>	final CompletableFuture<Integer> f = new CompletableFuture<>();
1190	>
1191	>	if (!createIncomplete) f.completeExceptionally(ex1);
1192		final CompletableFuture<Integer> g = m.handle
1193		(f,
1194	<	(Integer x, Throwable t) -> {
1194	>	(Integer result, Throwable t) -> {
1195		m.checkExecutionMode();
1196	<	threadAssertSame(x, v1);
1197	<	threadAssertNull(t);
1196	>	threadAssertNull(result);
1197	>	threadAssertSame(ex1, t);
1198		a.getAndIncrement();
1199	<	throw ex;
1199	>	throw ex2;
1200		});
1201	<	if (createIncomplete) assertTrue(f.complete(v1));
1201	>	if (createIncomplete) f.completeExceptionally(ex1);
1202
1203	<	checkCompletedWithWrappedException(g, ex);
1204	<	checkCompletedNormally(f, v1);
1203	>	checkCompletedWithWrappedException(g, ex2);
1204	>	checkCompletedExceptionally(f, ex1);
1205		assertEquals(1, a.get());
1206		}}
1207
#	Line 1238 | Line 1234 | public class CompletableFutureTest exten
1234		{
1235		final FailingRunnable r = new FailingRunnable(m);
1236		final CompletableFuture<Void> f = m.runAsync(r);
1237	<	checkCompletedWithWrappedCFException(f);
1237	>	checkCompletedWithWrappedException(f, r.ex);
1238		r.assertInvoked();
1239		}}
1240
1241	+	public void testRunAsync_rejectingExecutor() {
1242	+	CountingRejectingExecutor e = new CountingRejectingExecutor();
1243	+	try {
1244	+	CompletableFuture.runAsync(() -> {}, e);
1245	+	shouldThrow();
1246	+	} catch (Throwable t) {
1247	+	assertSame(e.ex, t);
1248	+	}
1249	+
1250	+	assertEquals(1, e.count.get());
1251	+	}
1252	+
1253		/**
1254		* supplyAsync completes with result of supplier
1255		*/
#	Line 1272 | Line 1280 | public class CompletableFutureTest exten
1280		{
1281		FailingSupplier r = new FailingSupplier(m);
1282		CompletableFuture<Integer> f = m.supplyAsync(r);
1283	<	checkCompletedWithWrappedCFException(f);
1283	>	checkCompletedWithWrappedException(f, r.ex);
1284		r.assertInvoked();
1285		}}
1286
1287	+	public void testSupplyAsync_rejectingExecutor() {
1288	+	CountingRejectingExecutor e = new CountingRejectingExecutor();
1289	+	try {
1290	+	CompletableFuture.supplyAsync(() -> null, e);
1291	+	shouldThrow();
1292	+	} catch (Throwable t) {
1293	+	assertSame(e.ex, t);
1294	+	}
1295	+
1296	+	assertEquals(1, e.count.get());
1297	+	}
1298	+
1299		// seq completion methods
1300
1301		/**
#	Line 1394 | Line 1414 | public class CompletableFutureTest exten
1414		final CompletableFuture<Void> h4 = m.runAfterBoth(f, f, rs[4]);
1415		final CompletableFuture<Void> h5 = m.runAfterEither(f, f, rs[5]);
1416
1417	<	checkCompletedWithWrappedCFException(h0);
1418	<	checkCompletedWithWrappedCFException(h1);
1419	<	checkCompletedWithWrappedCFException(h2);
1420	<	checkCompletedWithWrappedCFException(h3);
1421	<	checkCompletedWithWrappedCFException(h4);
1422	<	checkCompletedWithWrappedCFException(h5);
1417	>	checkCompletedWithWrappedException(h0, rs[0].ex);
1418	>	checkCompletedWithWrappedException(h1, rs[1].ex);
1419	>	checkCompletedWithWrappedException(h2, rs[2].ex);
1420	>	checkCompletedWithWrappedException(h3, rs[3].ex);
1421	>	checkCompletedWithWrappedException(h4, rs[4].ex);
1422	>	checkCompletedWithWrappedException(h5, rs[5].ex);
1423		checkCompletedNormally(f, v1);
1424		}}
1425
#	Line 1498 | Line 1518 | public class CompletableFutureTest exten
1518		final CompletableFuture<Integer> h2 = m.thenApply(f, rs[2]);
1519		final CompletableFuture<Integer> h3 = m.applyToEither(f, f, rs[3]);
1520
1521	<	checkCompletedWithWrappedCFException(h0);
1522	<	checkCompletedWithWrappedCFException(h1);
1523	<	checkCompletedWithWrappedCFException(h2);
1524	<	checkCompletedWithWrappedCFException(h3);
1521	>	checkCompletedWithWrappedException(h0, rs[0].ex);
1522	>	checkCompletedWithWrappedException(h1, rs[1].ex);
1523	>	checkCompletedWithWrappedException(h2, rs[2].ex);
1524	>	checkCompletedWithWrappedException(h3, rs[3].ex);
1525		checkCompletedNormally(f, v1);
1526		}}
1527
#	Line 1600 | Line 1620 | public class CompletableFutureTest exten
1620		final CompletableFuture<Void> h2 = m.thenAccept(f, rs[2]);
1621		final CompletableFuture<Void> h3 = m.acceptEither(f, f, rs[3]);
1622
1623	<	checkCompletedWithWrappedCFException(h0);
1624	<	checkCompletedWithWrappedCFException(h1);
1625	<	checkCompletedWithWrappedCFException(h2);
1626	<	checkCompletedWithWrappedCFException(h3);
1623	>	checkCompletedWithWrappedException(h0, rs[0].ex);
1624	>	checkCompletedWithWrappedException(h1, rs[1].ex);
1625	>	checkCompletedWithWrappedException(h2, rs[2].ex);
1626	>	checkCompletedWithWrappedException(h3, rs[3].ex);
1627		checkCompletedNormally(f, v1);
1628		}}
1629
#	Line 1765 | Line 1785 | public class CompletableFutureTest exten
1785		assertTrue(snd.complete(w2));
1786		final CompletableFuture<Integer> h3 = m.thenCombine(f, g, r3);
1787
1788	<	checkCompletedWithWrappedCFException(h1);
1789	<	checkCompletedWithWrappedCFException(h2);
1790	<	checkCompletedWithWrappedCFException(h3);
1788	>	checkCompletedWithWrappedException(h1, r1.ex);
1789	>	checkCompletedWithWrappedException(h2, r2.ex);
1790	>	checkCompletedWithWrappedException(h3, r3.ex);
1791		r1.assertInvoked();
1792		r2.assertInvoked();
1793		r3.assertInvoked();
#	Line 1929 | Line 1949 | public class CompletableFutureTest exten
1949		assertTrue(snd.complete(w2));
1950		final CompletableFuture<Void> h3 = m.thenAcceptBoth(f, g, r3);
1951
1952	<	checkCompletedWithWrappedCFException(h1);
1953	<	checkCompletedWithWrappedCFException(h2);
1954	<	checkCompletedWithWrappedCFException(h3);
1952	>	checkCompletedWithWrappedException(h1, r1.ex);
1953	>	checkCompletedWithWrappedException(h2, r2.ex);
1954	>	checkCompletedWithWrappedException(h3, r3.ex);
1955		r1.assertInvoked();
1956		r2.assertInvoked();
1957		r3.assertInvoked();
#	Line 2093 | Line 2113 | public class CompletableFutureTest exten
2113		assertTrue(snd.complete(w2));
2114		final CompletableFuture<Void> h3 = m.runAfterBoth(f, g, r3);
2115
2116	<	checkCompletedWithWrappedCFException(h1);
2117	<	checkCompletedWithWrappedCFException(h2);
2118	<	checkCompletedWithWrappedCFException(h3);
2116	>	checkCompletedWithWrappedException(h1, r1.ex);
2117	>	checkCompletedWithWrappedException(h2, r2.ex);
2118	>	checkCompletedWithWrappedException(h3, r3.ex);
2119		r1.assertInvoked();
2120		r2.assertInvoked();
2121		r3.assertInvoked();
#	Line 2385 | Line 2405 | public class CompletableFutureTest exten
2405		f.complete(v1);
2406		final CompletableFuture<Integer> h2 = m.applyToEither(f, g, rs[2]);
2407		final CompletableFuture<Integer> h3 = m.applyToEither(g, f, rs[3]);
2408	<	checkCompletedWithWrappedCFException(h0);
2409	<	checkCompletedWithWrappedCFException(h1);
2410	<	checkCompletedWithWrappedCFException(h2);
2411	<	checkCompletedWithWrappedCFException(h3);
2408	>	checkCompletedWithWrappedException(h0, rs[0].ex);
2409	>	checkCompletedWithWrappedException(h1, rs[1].ex);
2410	>	checkCompletedWithWrappedException(h2, rs[2].ex);
2411	>	checkCompletedWithWrappedException(h3, rs[3].ex);
2412		for (int i = 0; i < 4; i++) rs[i].assertValue(v1);
2413
2414		g.complete(v2);
#	Line 2397 | Line 2417 | public class CompletableFutureTest exten
2417		final CompletableFuture<Integer> h4 = m.applyToEither(f, g, rs[4]);
2418		final CompletableFuture<Integer> h5 = m.applyToEither(g, f, rs[5]);
2419
2420	<	checkCompletedWithWrappedCFException(h4);
2420	>	checkCompletedWithWrappedException(h4, rs[4].ex);
2421		assertTrue(Objects.equals(v1, rs[4].value) ||
2422		Objects.equals(v2, rs[4].value));
2423	<	checkCompletedWithWrappedCFException(h5);
2423	>	checkCompletedWithWrappedException(h5, rs[5].ex);
2424		assertTrue(Objects.equals(v1, rs[5].value) ||
2425		Objects.equals(v2, rs[5].value));
2426
#	Line 2538 | Line 2558 | public class CompletableFutureTest exten
2558
2559		// unspecified behavior - both source completions available
2560		try {
2561	<	assertEquals(null, h0.join());
2561	>	assertNull(h0.join());
2562		rs[0].assertValue(v1);
2563		} catch (CompletionException ok) {
2564		checkCompletedWithWrappedException(h0, ex);
2565		rs[0].assertNotInvoked();
2566		}
2567		try {
2568	<	assertEquals(null, h1.join());
2568	>	assertNull(h1.join());
2569		rs[1].assertValue(v1);
2570		} catch (CompletionException ok) {
2571		checkCompletedWithWrappedException(h1, ex);
2572		rs[1].assertNotInvoked();
2573		}
2574		try {
2575	<	assertEquals(null, h2.join());
2575	>	assertNull(h2.join());
2576		rs[2].assertValue(v1);
2577		} catch (CompletionException ok) {
2578		checkCompletedWithWrappedException(h2, ex);
2579		rs[2].assertNotInvoked();
2580		}
2581		try {
2582	<	assertEquals(null, h3.join());
2582	>	assertNull(h3.join());
2583		rs[3].assertValue(v1);
2584		} catch (CompletionException ok) {
2585		checkCompletedWithWrappedException(h3, ex);
#	Line 2644 | Line 2664 | public class CompletableFutureTest exten
2664		f.complete(v1);
2665		final CompletableFuture<Void> h2 = m.acceptEither(f, g, rs[2]);
2666		final CompletableFuture<Void> h3 = m.acceptEither(g, f, rs[3]);
2667	<	checkCompletedWithWrappedCFException(h0);
2668	<	checkCompletedWithWrappedCFException(h1);
2669	<	checkCompletedWithWrappedCFException(h2);
2670	<	checkCompletedWithWrappedCFException(h3);
2667	>	checkCompletedWithWrappedException(h0, rs[0].ex);
2668	>	checkCompletedWithWrappedException(h1, rs[1].ex);
2669	>	checkCompletedWithWrappedException(h2, rs[2].ex);
2670	>	checkCompletedWithWrappedException(h3, rs[3].ex);
2671		for (int i = 0; i < 4; i++) rs[i].assertValue(v1);
2672
2673		g.complete(v2);
#	Line 2656 | Line 2676 | public class CompletableFutureTest exten
2676		final CompletableFuture<Void> h4 = m.acceptEither(f, g, rs[4]);
2677		final CompletableFuture<Void> h5 = m.acceptEither(g, f, rs[5]);
2678
2679	<	checkCompletedWithWrappedCFException(h4);
2679	>	checkCompletedWithWrappedException(h4, rs[4].ex);
2680		assertTrue(Objects.equals(v1, rs[4].value) ||
2681		Objects.equals(v2, rs[4].value));
2682	<	checkCompletedWithWrappedCFException(h5);
2682	>	checkCompletedWithWrappedException(h5, rs[5].ex);
2683		assertTrue(Objects.equals(v1, rs[5].value) ||
2684		Objects.equals(v2, rs[5].value));
2685
#	Line 2675 | Line 2695 | public class CompletableFutureTest exten
2695		for (ExecutionMode m : ExecutionMode.values())
2696		for (Integer v1 : new Integer[] { 1, null })
2697		for (Integer v2 : new Integer[] { 2, null })
2698	+	for (boolean pushNop : new boolean[] { true, false })
2699		{
2700		final CompletableFuture<Integer> f = new CompletableFuture<>();
2701		final CompletableFuture<Integer> g = new CompletableFuture<>();
#	Line 2687 | Line 2708 | public class CompletableFutureTest exten
2708		checkIncomplete(h1);
2709		rs[0].assertNotInvoked();
2710		rs[1].assertNotInvoked();
2711	+	if (pushNop) {          // ad hoc test of intra-completion interference
2712	+	m.thenRun(f, () -> {});
2713	+	m.thenRun(g, () -> {});
2714	+	}
2715		f.complete(v1);
2716		checkCompletedNormally(h0, null);
2717		checkCompletedNormally(h1, null);
#	Line 2793 | Line 2818 | public class CompletableFutureTest exten
2818
2819		// unspecified behavior - both source completions available
2820		try {
2821	<	assertEquals(null, h0.join());
2821	>	assertNull(h0.join());
2822		rs[0].assertInvoked();
2823		} catch (CompletionException ok) {
2824		checkCompletedWithWrappedException(h0, ex);
2825		rs[0].assertNotInvoked();
2826		}
2827		try {
2828	<	assertEquals(null, h1.join());
2828	>	assertNull(h1.join());
2829		rs[1].assertInvoked();
2830		} catch (CompletionException ok) {
2831		checkCompletedWithWrappedException(h1, ex);
2832		rs[1].assertNotInvoked();
2833		}
2834		try {
2835	<	assertEquals(null, h2.join());
2835	>	assertNull(h2.join());
2836		rs[2].assertInvoked();
2837		} catch (CompletionException ok) {
2838		checkCompletedWithWrappedException(h2, ex);
2839		rs[2].assertNotInvoked();
2840		}
2841		try {
2842	<	assertEquals(null, h3.join());
2842	>	assertNull(h3.join());
2843		rs[3].assertInvoked();
2844		} catch (CompletionException ok) {
2845		checkCompletedWithWrappedException(h3, ex);
#	Line 2899 | Line 2924 | public class CompletableFutureTest exten
2924		assertTrue(f.complete(v1));
2925		final CompletableFuture<Void> h2 = m.runAfterEither(f, g, rs[2]);
2926		final CompletableFuture<Void> h3 = m.runAfterEither(g, f, rs[3]);
2927	<	checkCompletedWithWrappedCFException(h0);
2928	<	checkCompletedWithWrappedCFException(h1);
2929	<	checkCompletedWithWrappedCFException(h2);
2930	<	checkCompletedWithWrappedCFException(h3);
2927	>	checkCompletedWithWrappedException(h0, rs[0].ex);
2928	>	checkCompletedWithWrappedException(h1, rs[1].ex);
2929	>	checkCompletedWithWrappedException(h2, rs[2].ex);
2930	>	checkCompletedWithWrappedException(h3, rs[3].ex);
2931		for (int i = 0; i < 4; i++) rs[i].assertInvoked();
2932		assertTrue(g.complete(v2));
2933		final CompletableFuture<Void> h4 = m.runAfterEither(f, g, rs[4]);
2934		final CompletableFuture<Void> h5 = m.runAfterEither(g, f, rs[5]);
2935	<	checkCompletedWithWrappedCFException(h4);
2936	<	checkCompletedWithWrappedCFException(h5);
2935	>	checkCompletedWithWrappedException(h4, rs[4].ex);
2936	>	checkCompletedWithWrappedException(h5, rs[5].ex);
2937
2938		checkCompletedNormally(f, v1);
2939		checkCompletedNormally(g, v2);
#	Line 2969 | Line 2994 | public class CompletableFutureTest exten
2994		final CompletableFuture<Integer> g = m.thenCompose(f, r);
2995		if (createIncomplete) assertTrue(f.complete(v1));
2996
2997	<	checkCompletedWithWrappedCFException(g);
2997	>	checkCompletedWithWrappedException(g, r.ex);
2998		checkCompletedNormally(f, v1);
2999		}}
3000
#	Line 2994 | Line 3019 | public class CompletableFutureTest exten
3019		checkCancelled(f);
3020		}}
3021
3022	+	/**
3023	+	* thenCompose result completes exceptionally if the result of the action does
3024	+	*/
3025	+	public void testThenCompose_actionReturnsFailingFuture() {
3026	+	for (ExecutionMode m : ExecutionMode.values())
3027	+	for (int order = 0; order < 6; order++)
3028	+	for (Integer v1 : new Integer[] { 1, null })
3029	+	{
3030	+	final CFException ex = new CFException();
3031	+	final CompletableFuture<Integer> f = new CompletableFuture<>();
3032	+	final CompletableFuture<Integer> g = new CompletableFuture<>();
3033	+	final CompletableFuture<Integer> h;
3034	+	// Test all permutations of orders
3035	+	switch (order) {
3036	+	case 0:
3037	+	assertTrue(f.complete(v1));
3038	+	assertTrue(g.completeExceptionally(ex));
3039	+	h = m.thenCompose(f, (x -> g));
3040	+	break;
3041	+	case 1:
3042	+	assertTrue(f.complete(v1));
3043	+	h = m.thenCompose(f, (x -> g));
3044	+	assertTrue(g.completeExceptionally(ex));
3045	+	break;
3046	+	case 2:
3047	+	assertTrue(g.completeExceptionally(ex));
3048	+	assertTrue(f.complete(v1));
3049	+	h = m.thenCompose(f, (x -> g));
3050	+	break;
3051	+	case 3:
3052	+	assertTrue(g.completeExceptionally(ex));
3053	+	h = m.thenCompose(f, (x -> g));
3054	+	assertTrue(f.complete(v1));
3055	+	break;
3056	+	case 4:
3057	+	h = m.thenCompose(f, (x -> g));
3058	+	assertTrue(f.complete(v1));
3059	+	assertTrue(g.completeExceptionally(ex));
3060	+	break;
3061	+	case 5:
3062	+	h = m.thenCompose(f, (x -> g));
3063	+	assertTrue(f.complete(v1));
3064	+	assertTrue(g.completeExceptionally(ex));
3065	+	break;
3066	+	default: throw new AssertionError();
3067	+	}
3068	+
3069	+	checkCompletedExceptionally(g, ex);
3070	+	checkCompletedWithWrappedException(h, ex);
3071	+	checkCompletedNormally(f, v1);
3072	+	}}
3073	+
3074		// other static methods
3075
3076		/**
#	Line 3026 | Line 3103 | public class CompletableFutureTest exten
3103		}
3104		}
3105
3106	<	public void testAllOf_backwards() throws Exception {
3106	>	public void testAllOf_normal_backwards() throws Exception {
3107		for (int k = 1; k < 10; k++) {
3108		CompletableFuture<Integer>[] fs
3109		= (CompletableFuture<Integer>[]) new CompletableFuture[k];
#	Line 3054 | Line 3131 | public class CompletableFutureTest exten
3131		for (int i = 0; i < k; i++) {
3132		checkIncomplete(f);
3133		checkIncomplete(CompletableFuture.allOf(fs));
3134	<	if (i != k/2) {
3134	>	if (i != k / 2) {
3135		fs[i].complete(i);
3136		checkCompletedNormally(fs[i], i);
3137		} else {
#	Line 3157 | Line 3234 | public class CompletableFutureTest exten
3234		/**
3235		* Completion methods throw NullPointerException with null arguments
3236		*/
3237	+	@SuppressWarnings("FutureReturnValueIgnored")
3238		public void testNPE() {
3239		CompletableFuture<Integer> f = new CompletableFuture<>();
3240		CompletableFuture<Integer> g = new CompletableFuture<>();
3241		CompletableFuture<Integer> nullFuture = (CompletableFuture<Integer>)null;
3164	–	CompletableFuture<?> h;
3242		ThreadExecutor exec = new ThreadExecutor();
3243
3244		Runnable[] throwingActions = {
#	Line 3177 | Line 3254 | public class CompletableFutureTest exten
3254
3255		() -> f.thenApply(null),
3256		() -> f.thenApplyAsync(null),
3257	<	() -> f.thenApplyAsync((x) -> x, null),
3257	>	() -> f.thenApplyAsync(x -> x, null),
3258		() -> f.thenApplyAsync(null, exec),
3259
3260		() -> f.thenAccept(null),
3261		() -> f.thenAcceptAsync(null),
3262	<	() -> f.thenAcceptAsync((x) -> {} , null),
3262	>	() -> f.thenAcceptAsync(x -> {} , null),
3263		() -> f.thenAcceptAsync(null, exec),
3264
3265		() -> f.thenRun(null),
#	Line 3217 | Line 3294 | public class CompletableFutureTest exten
3294		() -> f.applyToEither(g, null),
3295		() -> f.applyToEitherAsync(g, null),
3296		() -> f.applyToEitherAsync(g, null, exec),
3297	<	() -> f.applyToEither(nullFuture, (x) -> x),
3298	<	() -> f.applyToEitherAsync(nullFuture, (x) -> x),
3299	<	() -> f.applyToEitherAsync(nullFuture, (x) -> x, exec),
3300	<	() -> f.applyToEitherAsync(g, (x) -> x, null),
3297	>	() -> f.applyToEither(nullFuture, x -> x),
3298	>	() -> f.applyToEitherAsync(nullFuture, x -> x),
3299	>	() -> f.applyToEitherAsync(nullFuture, x -> x, exec),
3300	>	() -> f.applyToEitherAsync(g, x -> x, null),
3301
3302		() -> f.acceptEither(g, null),
3303		() -> f.acceptEitherAsync(g, null),
3304		() -> f.acceptEitherAsync(g, null, exec),
3305	<	() -> f.acceptEither(nullFuture, (x) -> {}),
3306	<	() -> f.acceptEitherAsync(nullFuture, (x) -> {}),
3307	<	() -> f.acceptEitherAsync(nullFuture, (x) -> {}, exec),
3308	<	() -> f.acceptEitherAsync(g, (x) -> {}, null),
3305	>	() -> f.acceptEither(nullFuture, x -> {}),
3306	>	() -> f.acceptEitherAsync(nullFuture, x -> {}),
3307	>	() -> f.acceptEitherAsync(nullFuture, x -> {}, exec),
3308	>	() -> f.acceptEitherAsync(g, x -> {}, null),
3309
3310		() -> f.runAfterEither(g, null),
3311		() -> f.runAfterEitherAsync(g, null),
#	Line 3258 | Line 3335 | public class CompletableFutureTest exten
3335		() -> CompletableFuture.anyOf(null, f),
3336
3337		() -> f.obtrudeException(null),
3338	+
3339	+	() -> CompletableFuture.delayedExecutor(1L, SECONDS, null),
3340	+	() -> CompletableFuture.delayedExecutor(1L, null, exec),
3341	+	() -> CompletableFuture.delayedExecutor(1L, null),
3342	+
3343	+	() -> f.orTimeout(1L, null),
3344	+	() -> f.completeOnTimeout(42, 1L, null),
3345	+
3346	+	() -> CompletableFuture.failedFuture(null),
3347	+	() -> CompletableFuture.failedStage(null),
3348		};
3349
3350		assertThrows(NullPointerException.class, throwingActions);
#	Line 3265 | Line 3352 | public class CompletableFutureTest exten
3352		}
3353
3354		/**
3355	+	* Test submissions to an executor that rejects all tasks.
3356	+	*/
3357	+	public void testRejectingExecutor() {
3358	+	for (Integer v : new Integer[] { 1, null })
3359	+	{
3360	+	final CountingRejectingExecutor e = new CountingRejectingExecutor();
3361	+
3362	+	final CompletableFuture<Integer> complete = CompletableFuture.completedFuture(v);
3363	+	final CompletableFuture<Integer> incomplete = new CompletableFuture<>();
3364	+
3365	+	List<CompletableFuture<?>> futures = new ArrayList<>();
3366	+
3367	+	List<CompletableFuture<Integer>> srcs = new ArrayList<>();
3368	+	srcs.add(complete);
3369	+	srcs.add(incomplete);
3370	+
3371	+	for (CompletableFuture<Integer> src : srcs) {
3372	+	List<CompletableFuture<?>> fs = new ArrayList<>();
3373	+	fs.add(src.thenRunAsync(() -> {}, e));
3374	+	fs.add(src.thenAcceptAsync(z -> {}, e));
3375	+	fs.add(src.thenApplyAsync(z -> z, e));
3376	+
3377	+	fs.add(src.thenCombineAsync(src, (x, y) -> x, e));
3378	+	fs.add(src.thenAcceptBothAsync(src, (x, y) -> {}, e));
3379	+	fs.add(src.runAfterBothAsync(src, () -> {}, e));
3380	+
3381	+	fs.add(src.applyToEitherAsync(src, z -> z, e));
3382	+	fs.add(src.acceptEitherAsync(src, z -> {}, e));
3383	+	fs.add(src.runAfterEitherAsync(src, () -> {}, e));
3384	+
3385	+	fs.add(src.thenComposeAsync(z -> null, e));
3386	+	fs.add(src.whenCompleteAsync((z, t) -> {}, e));
3387	+	fs.add(src.handleAsync((z, t) -> null, e));
3388	+
3389	+	for (CompletableFuture<?> future : fs) {
3390	+	if (src.isDone())
3391	+	checkCompletedWithWrappedException(future, e.ex);
3392	+	else
3393	+	checkIncomplete(future);
3394	+	}
3395	+	futures.addAll(fs);
3396	+	}
3397	+
3398	+	{
3399	+	List<CompletableFuture<?>> fs = new ArrayList<>();
3400	+
3401	+	fs.add(complete.thenCombineAsync(incomplete, (x, y) -> x, e));
3402	+	fs.add(incomplete.thenCombineAsync(complete, (x, y) -> x, e));
3403	+
3404	+	fs.add(complete.thenAcceptBothAsync(incomplete, (x, y) -> {}, e));
3405	+	fs.add(incomplete.thenAcceptBothAsync(complete, (x, y) -> {}, e));
3406	+
3407	+	fs.add(complete.runAfterBothAsync(incomplete, () -> {}, e));
3408	+	fs.add(incomplete.runAfterBothAsync(complete, () -> {}, e));
3409	+
3410	+	for (CompletableFuture<?> future : fs)
3411	+	checkIncomplete(future);
3412	+	futures.addAll(fs);
3413	+	}
3414	+
3415	+	{
3416	+	List<CompletableFuture<?>> fs = new ArrayList<>();
3417	+
3418	+	fs.add(complete.applyToEitherAsync(incomplete, z -> z, e));
3419	+	fs.add(incomplete.applyToEitherAsync(complete, z -> z, e));
3420	+
3421	+	fs.add(complete.acceptEitherAsync(incomplete, z -> {}, e));
3422	+	fs.add(incomplete.acceptEitherAsync(complete, z -> {}, e));
3423	+
3424	+	fs.add(complete.runAfterEitherAsync(incomplete, () -> {}, e));
3425	+	fs.add(incomplete.runAfterEitherAsync(complete, () -> {}, e));
3426	+
3427	+	for (CompletableFuture<?> future : fs)
3428	+	checkCompletedWithWrappedException(future, e.ex);
3429	+	futures.addAll(fs);
3430	+	}
3431	+
3432	+	incomplete.complete(v);
3433	+
3434	+	for (CompletableFuture<?> future : futures)
3435	+	checkCompletedWithWrappedException(future, e.ex);
3436	+
3437	+	assertEquals(futures.size(), e.count.get());
3438	+	}}
3439	+
3440	+	/**
3441	+	* Test submissions to an executor that rejects all tasks, but
3442	+	* should never be invoked because the dependent future is
3443	+	* explicitly completed.
3444	+	*/
3445	+	public void testRejectingExecutorNeverInvoked() {
3446	+	for (Integer v : new Integer[] { 1, null })
3447	+	{
3448	+	final CountingRejectingExecutor e = new CountingRejectingExecutor();
3449	+
3450	+	final CompletableFuture<Integer> complete = CompletableFuture.completedFuture(v);
3451	+	final CompletableFuture<Integer> incomplete = new CompletableFuture<>();
3452	+
3453	+	List<CompletableFuture<?>> futures = new ArrayList<>();
3454	+
3455	+	List<CompletableFuture<Integer>> srcs = new ArrayList<>();
3456	+	srcs.add(complete);
3457	+	srcs.add(incomplete);
3458	+
3459	+	List<CompletableFuture<?>> fs = new ArrayList<>();
3460	+	fs.add(incomplete.thenRunAsync(() -> {}, e));
3461	+	fs.add(incomplete.thenAcceptAsync(z -> {}, e));
3462	+	fs.add(incomplete.thenApplyAsync(z -> z, e));
3463	+
3464	+	fs.add(incomplete.thenCombineAsync(incomplete, (x, y) -> x, e));
3465	+	fs.add(incomplete.thenAcceptBothAsync(incomplete, (x, y) -> {}, e));
3466	+	fs.add(incomplete.runAfterBothAsync(incomplete, () -> {}, e));
3467	+
3468	+	fs.add(incomplete.applyToEitherAsync(incomplete, z -> z, e));
3469	+	fs.add(incomplete.acceptEitherAsync(incomplete, z -> {}, e));
3470	+	fs.add(incomplete.runAfterEitherAsync(incomplete, () -> {}, e));
3471	+
3472	+	fs.add(incomplete.thenComposeAsync(z -> null, e));
3473	+	fs.add(incomplete.whenCompleteAsync((z, t) -> {}, e));
3474	+	fs.add(incomplete.handleAsync((z, t) -> null, e));
3475	+
3476	+	fs.add(complete.thenCombineAsync(incomplete, (x, y) -> x, e));
3477	+	fs.add(incomplete.thenCombineAsync(complete, (x, y) -> x, e));
3478	+
3479	+	fs.add(complete.thenAcceptBothAsync(incomplete, (x, y) -> {}, e));
3480	+	fs.add(incomplete.thenAcceptBothAsync(complete, (x, y) -> {}, e));
3481	+
3482	+	fs.add(complete.runAfterBothAsync(incomplete, () -> {}, e));
3483	+	fs.add(incomplete.runAfterBothAsync(complete, () -> {}, e));
3484	+
3485	+	for (CompletableFuture<?> future : fs)
3486	+	checkIncomplete(future);
3487	+
3488	+	for (CompletableFuture<?> future : fs)
3489	+	future.complete(null);
3490	+
3491	+	incomplete.complete(v);
3492	+
3493	+	for (CompletableFuture<?> future : fs)
3494	+	checkCompletedNormally(future, null);
3495	+
3496	+	assertEquals(0, e.count.get());
3497	+	}}
3498	+
3499	+	/**
3500		* toCompletableFuture returns this CompletableFuture.
3501		*/
3502		public void testToCompletableFuture() {
#	Line 3272 | Line 3504 | public class CompletableFutureTest exten
3504		assertSame(f, f.toCompletableFuture());
3505		}
3506
3507	+	// jdk9
3508	+
3509	+	/**
3510	+	* newIncompleteFuture returns an incomplete CompletableFuture
3511	+	*/
3512	+	public void testNewIncompleteFuture() {
3513	+	for (Integer v1 : new Integer[] { 1, null })
3514	+	{
3515	+	CompletableFuture<Integer> f = new CompletableFuture<>();
3516	+	CompletableFuture<Integer> g = f.newIncompleteFuture();
3517	+	checkIncomplete(f);
3518	+	checkIncomplete(g);
3519	+	f.complete(v1);
3520	+	checkCompletedNormally(f, v1);
3521	+	checkIncomplete(g);
3522	+	g.complete(v1);
3523	+	checkCompletedNormally(g, v1);
3524	+	assertSame(g.getClass(), CompletableFuture.class);
3525	+	}}
3526	+
3527	+	/**
3528	+	* completedStage returns a completed CompletionStage
3529	+	*/
3530	+	public void testCompletedStage() {
3531	+	AtomicInteger x = new AtomicInteger(0);
3532	+	AtomicReference<Throwable> r = new AtomicReference<>();
3533	+	CompletionStage<Integer> f = CompletableFuture.completedStage(1);
3534	+	f.whenComplete((v, e) -> {if (e != null) r.set(e); else x.set(v);});
3535	+	assertEquals(x.get(), 1);
3536	+	assertNull(r.get());
3537	+	}
3538	+
3539	+	/**
3540	+	* defaultExecutor by default returns the commonPool if
3541	+	* it supports more than one thread.
3542	+	*/
3543	+	public void testDefaultExecutor() {
3544	+	CompletableFuture<Integer> f = new CompletableFuture<>();
3545	+	Executor e = f.defaultExecutor();
3546	+	Executor c = ForkJoinPool.commonPool();
3547	+	if (ForkJoinPool.getCommonPoolParallelism() > 1)
3548	+	assertSame(e, c);
3549	+	else
3550	+	assertNotSame(e, c);
3551	+	}
3552	+
3553	+	/**
3554	+	* failedFuture returns a CompletableFuture completed
3555	+	* exceptionally with the given Exception
3556	+	*/
3557	+	public void testFailedFuture() {
3558	+	CFException ex = new CFException();
3559	+	CompletableFuture<Integer> f = CompletableFuture.failedFuture(ex);
3560	+	checkCompletedExceptionally(f, ex);
3561	+	}
3562	+
3563	+	/**
3564	+	* failedFuture(null) throws NPE
3565	+	*/
3566	+	public void testFailedFuture_null() {
3567	+	try {
3568	+	CompletableFuture<Integer> f = CompletableFuture.failedFuture(null);
3569	+	shouldThrow();
3570	+	} catch (NullPointerException success) {}
3571	+	}
3572	+
3573	+	/**
3574	+	* copy returns a CompletableFuture that is completed normally,
3575	+	* with the same value, when source is.
3576	+	*/
3577	+	public void testCopy_normalCompletion() {
3578	+	for (boolean createIncomplete : new boolean[] { true, false })
3579	+	for (Integer v1 : new Integer[] { 1, null })
3580	+	{
3581	+	CompletableFuture<Integer> f = new CompletableFuture<>();
3582	+	if (!createIncomplete) assertTrue(f.complete(v1));
3583	+	CompletableFuture<Integer> g = f.copy();
3584	+	if (createIncomplete) {
3585	+	checkIncomplete(f);
3586	+	checkIncomplete(g);
3587	+	assertTrue(f.complete(v1));
3588	+	}
3589	+	checkCompletedNormally(f, v1);
3590	+	checkCompletedNormally(g, v1);
3591	+	}}
3592	+
3593	+	/**
3594	+	* copy returns a CompletableFuture that is completed exceptionally
3595	+	* when source is.
3596	+	*/
3597	+	public void testCopy_exceptionalCompletion() {
3598	+	for (boolean createIncomplete : new boolean[] { true, false })
3599	+	{
3600	+	CFException ex = new CFException();
3601	+	CompletableFuture<Integer> f = new CompletableFuture<>();
3602	+	if (!createIncomplete) f.completeExceptionally(ex);
3603	+	CompletableFuture<Integer> g = f.copy();
3604	+	if (createIncomplete) {
3605	+	checkIncomplete(f);
3606	+	checkIncomplete(g);
3607	+	f.completeExceptionally(ex);
3608	+	}
3609	+	checkCompletedExceptionally(f, ex);
3610	+	checkCompletedWithWrappedException(g, ex);
3611	+	}}
3612	+
3613	+	/**
3614	+	* Completion of a copy does not complete its source.
3615	+	*/
3616	+	public void testCopy_oneWayPropagation() {
3617	+	CompletableFuture<Integer> f = new CompletableFuture<>();
3618	+	assertTrue(f.copy().complete(1));
3619	+	assertTrue(f.copy().complete(null));
3620	+	assertTrue(f.copy().cancel(true));
3621	+	assertTrue(f.copy().cancel(false));
3622	+	assertTrue(f.copy().completeExceptionally(new CFException()));
3623	+	checkIncomplete(f);
3624	+	}
3625	+
3626	+	/**
3627	+	* minimalCompletionStage returns a CompletableFuture that is
3628	+	* completed normally, with the same value, when source is.
3629	+	*/
3630	+	public void testMinimalCompletionStage() {
3631	+	CompletableFuture<Integer> f = new CompletableFuture<>();
3632	+	CompletionStage<Integer> g = f.minimalCompletionStage();
3633	+	AtomicInteger x = new AtomicInteger(0);
3634	+	AtomicReference<Throwable> r = new AtomicReference<>();
3635	+	checkIncomplete(f);
3636	+	g.whenComplete((v, e) -> {if (e != null) r.set(e); else x.set(v);});
3637	+	f.complete(1);
3638	+	checkCompletedNormally(f, 1);
3639	+	assertEquals(x.get(), 1);
3640	+	assertNull(r.get());
3641	+	}
3642	+
3643	+	/**
3644	+	* minimalCompletionStage returns a CompletableFuture that is
3645	+	* completed exceptionally when source is.
3646	+	*/
3647	+	public void testMinimalCompletionStage2() {
3648	+	CompletableFuture<Integer> f = new CompletableFuture<>();
3649	+	CompletionStage<Integer> g = f.minimalCompletionStage();
3650	+	AtomicInteger x = new AtomicInteger(0);
3651	+	AtomicReference<Throwable> r = new AtomicReference<>();
3652	+	g.whenComplete((v, e) -> {if (e != null) r.set(e); else x.set(v);});
3653	+	checkIncomplete(f);
3654	+	CFException ex = new CFException();
3655	+	f.completeExceptionally(ex);
3656	+	checkCompletedExceptionally(f, ex);
3657	+	assertEquals(x.get(), 0);
3658	+	assertEquals(r.get().getCause(), ex);
3659	+	}
3660	+
3661	+	/**
3662	+	* failedStage returns a CompletionStage completed
3663	+	* exceptionally with the given Exception
3664	+	*/
3665	+	public void testFailedStage() {
3666	+	CFException ex = new CFException();
3667	+	CompletionStage<Integer> f = CompletableFuture.failedStage(ex);
3668	+	AtomicInteger x = new AtomicInteger(0);
3669	+	AtomicReference<Throwable> r = new AtomicReference<>();
3670	+	f.whenComplete((v, e) -> {if (e != null) r.set(e); else x.set(v);});
3671	+	assertEquals(x.get(), 0);
3672	+	assertEquals(r.get(), ex);
3673	+	}
3674	+
3675	+	/**
3676	+	* completeAsync completes with value of given supplier
3677	+	*/
3678	+	public void testCompleteAsync() {
3679	+	for (Integer v1 : new Integer[] { 1, null })
3680	+	{
3681	+	CompletableFuture<Integer> f = new CompletableFuture<>();
3682	+	f.completeAsync(() -> v1);
3683	+	f.join();
3684	+	checkCompletedNormally(f, v1);
3685	+	}}
3686	+
3687	+	/**
3688	+	* completeAsync completes exceptionally if given supplier throws
3689	+	*/
3690	+	public void testCompleteAsync2() {
3691	+	CompletableFuture<Integer> f = new CompletableFuture<>();
3692	+	CFException ex = new CFException();
3693	+	f.completeAsync(() -> { throw ex; });
3694	+	try {
3695	+	f.join();
3696	+	shouldThrow();
3697	+	} catch (CompletionException success) {}
3698	+	checkCompletedWithWrappedException(f, ex);
3699	+	}
3700	+
3701	+	/**
3702	+	* completeAsync with given executor completes with value of given supplier
3703	+	*/
3704	+	public void testCompleteAsync3() {
3705	+	for (Integer v1 : new Integer[] { 1, null })
3706	+	{
3707	+	CompletableFuture<Integer> f = new CompletableFuture<>();
3708	+	ThreadExecutor executor = new ThreadExecutor();
3709	+	f.completeAsync(() -> v1, executor);
3710	+	assertSame(v1, f.join());
3711	+	checkCompletedNormally(f, v1);
3712	+	assertEquals(1, executor.count.get());
3713	+	}}
3714	+
3715	+	/**
3716	+	* completeAsync with given executor completes exceptionally if
3717	+	* given supplier throws
3718	+	*/
3719	+	public void testCompleteAsync4() {
3720	+	CompletableFuture<Integer> f = new CompletableFuture<>();
3721	+	CFException ex = new CFException();
3722	+	ThreadExecutor executor = new ThreadExecutor();
3723	+	f.completeAsync(() -> { throw ex; }, executor);
3724	+	try {
3725	+	f.join();
3726	+	shouldThrow();
3727	+	} catch (CompletionException success) {}
3728	+	checkCompletedWithWrappedException(f, ex);
3729	+	assertEquals(1, executor.count.get());
3730	+	}
3731	+
3732	+	/**
3733	+	* orTimeout completes with TimeoutException if not complete
3734	+	*/
3735	+	public void testOrTimeout_timesOut() {
3736	+	long timeoutMillis = timeoutMillis();
3737	+	CompletableFuture<Integer> f = new CompletableFuture<>();
3738	+	long startTime = System.nanoTime();
3739	+	assertSame(f, f.orTimeout(timeoutMillis, MILLISECONDS));
3740	+	checkCompletedWithTimeoutException(f);
3741	+	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
3742	+	}
3743	+
3744	+	/**
3745	+	* orTimeout completes normally if completed before timeout
3746	+	*/
3747	+	public void testOrTimeout_completed() {
3748	+	for (Integer v1 : new Integer[] { 1, null })
3749	+	{
3750	+	CompletableFuture<Integer> f = new CompletableFuture<>();
3751	+	CompletableFuture<Integer> g = new CompletableFuture<>();
3752	+	long startTime = System.nanoTime();
3753	+	f.complete(v1);
3754	+	assertSame(f, f.orTimeout(LONG_DELAY_MS, MILLISECONDS));
3755	+	assertSame(g, g.orTimeout(LONG_DELAY_MS, MILLISECONDS));
3756	+	g.complete(v1);
3757	+	checkCompletedNormally(f, v1);
3758	+	checkCompletedNormally(g, v1);
3759	+	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS / 2);
3760	+	}}
3761	+
3762	+	/**
3763	+	* completeOnTimeout completes with given value if not complete
3764	+	*/
3765	+	public void testCompleteOnTimeout_timesOut() {
3766	+	testInParallel(() -> testCompleteOnTimeout_timesOut(42),
3767	+	() -> testCompleteOnTimeout_timesOut(null));
3768	+	}
3769	+
3770	+	/**
3771	+	* completeOnTimeout completes with given value if not complete
3772	+	*/
3773	+	public void testCompleteOnTimeout_timesOut(Integer v) {
3774	+	long timeoutMillis = timeoutMillis();
3775	+	CompletableFuture<Integer> f = new CompletableFuture<>();
3776	+	long startTime = System.nanoTime();
3777	+	assertSame(f, f.completeOnTimeout(v, timeoutMillis, MILLISECONDS));
3778	+	assertSame(v, f.join());
3779	+	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
3780	+	f.complete(99);         // should have no effect
3781	+	checkCompletedNormally(f, v);
3782	+	}
3783	+
3784	+	/**
3785	+	* completeOnTimeout has no effect if completed within timeout
3786	+	*/
3787	+	public void testCompleteOnTimeout_completed() {
3788	+	for (Integer v1 : new Integer[] { 1, null })
3789	+	{
3790	+	CompletableFuture<Integer> f = new CompletableFuture<>();
3791	+	CompletableFuture<Integer> g = new CompletableFuture<>();
3792	+	long startTime = System.nanoTime();
3793	+	f.complete(v1);
3794	+	assertSame(f, f.completeOnTimeout(-1, LONG_DELAY_MS, MILLISECONDS));
3795	+	assertSame(g, g.completeOnTimeout(-1, LONG_DELAY_MS, MILLISECONDS));
3796	+	g.complete(v1);
3797	+	checkCompletedNormally(f, v1);
3798	+	checkCompletedNormally(g, v1);
3799	+	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS / 2);
3800	+	}}
3801	+
3802	+	/**
3803	+	* delayedExecutor returns an executor that delays submission
3804	+	*/
3805	+	public void testDelayedExecutor() {
3806	+	testInParallel(() -> testDelayedExecutor(null, null),
3807	+	() -> testDelayedExecutor(null, 1),
3808	+	() -> testDelayedExecutor(new ThreadExecutor(), 1),
3809	+	() -> testDelayedExecutor(new ThreadExecutor(), 1));
3810	+	}
3811	+
3812	+	public void testDelayedExecutor(Executor executor, Integer v) throws Exception {
3813	+	long timeoutMillis = timeoutMillis();
3814	+	// Use an "unreasonably long" long timeout to catch lingering threads
3815	+	long longTimeoutMillis = 1000 * 60 * 60 * 24;
3816	+	final Executor delayer, longDelayer;
3817	+	if (executor == null) {
3818	+	delayer = CompletableFuture.delayedExecutor(timeoutMillis, MILLISECONDS);
3819	+	longDelayer = CompletableFuture.delayedExecutor(longTimeoutMillis, MILLISECONDS);
3820	+	} else {
3821	+	delayer = CompletableFuture.delayedExecutor(timeoutMillis, MILLISECONDS, executor);
3822	+	longDelayer = CompletableFuture.delayedExecutor(longTimeoutMillis, MILLISECONDS, executor);
3823	+	}
3824	+	long startTime = System.nanoTime();
3825	+	CompletableFuture<Integer> f =
3826	+	CompletableFuture.supplyAsync(() -> v, delayer);
3827	+	CompletableFuture<Integer> g =
3828	+	CompletableFuture.supplyAsync(() -> v, longDelayer);
3829	+
3830	+	assertNull(g.getNow(null));
3831	+
3832	+	assertSame(v, f.get(LONG_DELAY_MS, MILLISECONDS));
3833	+	long millisElapsed = millisElapsedSince(startTime);
3834	+	assertTrue(millisElapsed >= timeoutMillis);
3835	+	assertTrue(millisElapsed < LONG_DELAY_MS / 2);
3836	+
3837	+	checkCompletedNormally(f, v);
3838	+
3839	+	checkIncomplete(g);
3840	+	assertTrue(g.cancel(true));
3841	+	}
3842	+
3843		//--- tests of implementation details; not part of official tck ---
3844
3845		Object resultOf(CompletableFuture<?> f) {
3846	+	SecurityManager sm = System.getSecurityManager();
3847	+	if (sm != null) {
3848	+	try {
3849	+	System.setSecurityManager(null);
3850	+	} catch (SecurityException giveUp) {
3851	+	return "Reflection not available";
3852	+	}
3853	+	}
3854	+
3855		try {
3856		java.lang.reflect.Field resultField
3857		= CompletableFuture.class.getDeclaredField("result");
3858		resultField.setAccessible(true);
3859		return resultField.get(f);
3860	<	} catch (Throwable t) { throw new AssertionError(t); }
3860	>	} catch (Throwable t) {
3861	>	throw new AssertionError(t);
3862	>	} finally {
3863	>	if (sm != null) System.setSecurityManager(sm);
3864	>	}
3865		}
3866
3867		public void testExceptionPropagationReusesResultObject() {
#	Line 3291 | Line 3872 | public class CompletableFutureTest exten
3872		final CompletableFuture<Integer> v42 = CompletableFuture.completedFuture(42);
3873		final CompletableFuture<Integer> incomplete = new CompletableFuture<>();
3874
3875	+	final Runnable noopRunnable = new Noop(m);
3876	+	final Consumer<Integer> noopConsumer = new NoopConsumer(m);
3877	+	final Function<Integer, Integer> incFunction = new IncFunction(m);
3878	+
3879		List<Function<CompletableFuture<Integer>, CompletableFuture<?>>> funs
3880		= new ArrayList<>();
3881
3882	<	funs.add((y) -> m.thenRun(y, new Noop(m)));
3883	<	funs.add((y) -> m.thenAccept(y, new NoopConsumer(m)));
3884	<	funs.add((y) -> m.thenApply(y, new IncFunction(m)));
3885	<
3886	<	funs.add((y) -> m.runAfterEither(y, incomplete, new Noop(m)));
3887	<	funs.add((y) -> m.acceptEither(y, incomplete, new NoopConsumer(m)));
3888	<	funs.add((y) -> m.applyToEither(y, incomplete, new IncFunction(m)));
3889	<
3890	<	funs.add((y) -> m.runAfterBoth(y, v42, new Noop(m)));
3891	<	funs.add((y) -> m.thenAcceptBoth(y, v42, new SubtractAction(m)));
3892	<	funs.add((y) -> m.thenCombine(y, v42, new SubtractFunction(m)));
3893	<
3894	<	funs.add((y) -> m.whenComplete(y, (Integer x, Throwable t) -> {}));
3895	<
3896	<	funs.add((y) -> m.thenCompose(y, new CompletableFutureInc(m)));
3897	<
3898	<	funs.add((y) -> CompletableFuture.allOf(new CompletableFuture<?>[] {y, v42}));
3899	<	funs.add((y) -> CompletableFuture.anyOf(new CompletableFuture<?>[] {y, incomplete}));
3882	>	funs.add(y -> m.thenRun(y, noopRunnable));
3883	>	funs.add(y -> m.thenAccept(y, noopConsumer));
3884	>	funs.add(y -> m.thenApply(y, incFunction));
3885	>
3886	>	funs.add(y -> m.runAfterEither(y, incomplete, noopRunnable));
3887	>	funs.add(y -> m.acceptEither(y, incomplete, noopConsumer));
3888	>	funs.add(y -> m.applyToEither(y, incomplete, incFunction));
3889	>
3890	>	funs.add(y -> m.runAfterBoth(y, v42, noopRunnable));
3891	>	funs.add(y -> m.runAfterBoth(v42, y, noopRunnable));
3892	>	funs.add(y -> m.thenAcceptBoth(y, v42, new SubtractAction(m)));
3893	>	funs.add(y -> m.thenAcceptBoth(v42, y, new SubtractAction(m)));
3894	>	funs.add(y -> m.thenCombine(y, v42, new SubtractFunction(m)));
3895	>	funs.add(y -> m.thenCombine(v42, y, new SubtractFunction(m)));
3896	>
3897	>	funs.add(y -> m.whenComplete(y, (Integer r, Throwable t) -> {}));
3898	>
3899	>	funs.add(y -> m.thenCompose(y, new CompletableFutureInc(m)));
3900	>
3901	>	funs.add(y -> CompletableFuture.allOf(y));
3902	>	funs.add(y -> CompletableFuture.allOf(y, v42));
3903	>	funs.add(y -> CompletableFuture.allOf(v42, y));
3904	>	funs.add(y -> CompletableFuture.anyOf(y));
3905	>	funs.add(y -> CompletableFuture.anyOf(y, incomplete));
3906	>	funs.add(y -> CompletableFuture.anyOf(incomplete, y));
3907
3908		for (Function<CompletableFuture<Integer>, CompletableFuture<?>>
3909		fun : funs) {
3910		CompletableFuture<Integer> f = new CompletableFuture<>();
3911		f.completeExceptionally(ex);
3912	<	CompletableFuture<Integer> src = m.thenApply(f, new IncFunction(m));
3912	>	CompletableFuture<Integer> src = m.thenApply(f, incFunction);
3913		checkCompletedWithWrappedException(src, ex);
3914		CompletableFuture<?> dep = fun.apply(src);
3915		checkCompletedWithWrappedException(dep, ex);
#	Line 3327 | Line 3919 | public class CompletableFutureTest exten
3919		for (Function<CompletableFuture<Integer>, CompletableFuture<?>>
3920		fun : funs) {
3921		CompletableFuture<Integer> f = new CompletableFuture<>();
3922	<	CompletableFuture<Integer> src = m.thenApply(f, new IncFunction(m));
3922	>	CompletableFuture<Integer> src = m.thenApply(f, incFunction);
3923		CompletableFuture<?> dep = fun.apply(src);
3924		f.completeExceptionally(ex);
3925		checkCompletedWithWrappedException(src, ex);
#	Line 3341 | Line 3933 | public class CompletableFutureTest exten
3933		CompletableFuture<Integer> f = new CompletableFuture<>();
3934		f.cancel(mayInterruptIfRunning);
3935		checkCancelled(f);
3936	<	CompletableFuture<Integer> src = m.thenApply(f, new IncFunction(m));
3936	>	CompletableFuture<Integer> src = m.thenApply(f, incFunction);
3937		checkCompletedWithWrappedCancellationException(src);
3938		CompletableFuture<?> dep = fun.apply(src);
3939		checkCompletedWithWrappedCancellationException(dep);
#	Line 3352 | Line 3944 | public class CompletableFutureTest exten
3944		for (Function<CompletableFuture<Integer>, CompletableFuture<?>>
3945		fun : funs) {
3946		CompletableFuture<Integer> f = new CompletableFuture<>();
3947	<	CompletableFuture<Integer> src = m.thenApply(f, new IncFunction(m));
3947	>	CompletableFuture<Integer> src = m.thenApply(f, incFunction);
3948		CompletableFuture<?> dep = fun.apply(src);
3949		f.cancel(mayInterruptIfRunning);
3950		checkCancelled(f);
#	Line 3362 | Line 3954 | public class CompletableFutureTest exten
3954		}
3955		}}
3956
3957	+	/**
3958	+	* Minimal completion stages throw UOE for most non-CompletionStage methods
3959	+	*/
3960	+	public void testMinimalCompletionStage_minimality() {
3961	+	if (!testImplementationDetails) return;
3962	+	Function<Method, String> toSignature =
3963	+	method -> method.getName() + Arrays.toString(method.getParameterTypes());
3964	+	Predicate<Method> isNotStatic =
3965	+	method -> (method.getModifiers() & Modifier.STATIC) == 0;
3966	+	List<Method> minimalMethods =
3967	+	Stream.of(Object.class, CompletionStage.class)
3968	+	.flatMap(klazz -> Stream.of(klazz.getMethods()))
3969	+	.filter(isNotStatic)
3970	+	.collect(Collectors.toList());
3971	+	// Methods from CompletableFuture permitted NOT to throw UOE
3972	+	String[] signatureWhitelist = {
3973	+	"newIncompleteFuture[]",
3974	+	"defaultExecutor[]",
3975	+	"minimalCompletionStage[]",
3976	+	"copy[]",
3977	+	};
3978	+	Set<String> permittedMethodSignatures =
3979	+	Stream.concat(minimalMethods.stream().map(toSignature),
3980	+	Stream.of(signatureWhitelist))
3981	+	.collect(Collectors.toSet());
3982	+	List<Method> allMethods = Stream.of(CompletableFuture.class.getMethods())
3983	+	.filter(isNotStatic)
3984	+	.filter(method -> !permittedMethodSignatures.contains(toSignature.apply(method)))
3985	+	.collect(Collectors.toList());
3986	+
3987	+	List<CompletionStage<Integer>> stages = new ArrayList<>();
3988	+	CompletionStage<Integer> min =
3989	+	new CompletableFuture<Integer>().minimalCompletionStage();
3990	+	stages.add(min);
3991	+	stages.add(min.thenApply(x -> x));
3992	+	stages.add(CompletableFuture.completedStage(1));
3993	+	stages.add(CompletableFuture.failedStage(new CFException()));
3994	+
3995	+	List<Method> bugs = new ArrayList<>();
3996	+	for (Method method : allMethods) {
3997	+	Class<?>[] parameterTypes = method.getParameterTypes();
3998	+	Object[] args = new Object[parameterTypes.length];
3999	+	// Manufacture boxed primitives for primitive params
4000	+	for (int i = 0; i < args.length; i++) {
4001	+	Class<?> type = parameterTypes[i];
4002	+	if (parameterTypes[i] == boolean.class)
4003	+	args[i] = false;
4004	+	else if (parameterTypes[i] == int.class)
4005	+	args[i] = 0;
4006	+	else if (parameterTypes[i] == long.class)
4007	+	args[i] = 0L;
4008	+	}
4009	+	for (CompletionStage<Integer> stage : stages) {
4010	+	try {
4011	+	method.invoke(stage, args);
4012	+	bugs.add(method);
4013	+	}
4014	+	catch (java.lang.reflect.InvocationTargetException expected) {
4015	+	if (! (expected.getCause() instanceof UnsupportedOperationException)) {
4016	+	bugs.add(method);
4017	+	// expected.getCause().printStackTrace();
4018	+	}
4019	+	}
4020	+	catch (ReflectiveOperationException bad) { throw new Error(bad); }
4021	+	}
4022	+	}
4023	+	if (!bugs.isEmpty())
4024	+	throw new Error("Methods did not throw UOE: " + bugs);
4025	+	}
4026	+
4027	+	/**
4028	+	* minimalStage.toCompletableFuture() returns a CompletableFuture that
4029	+	* is completed normally, with the same value, when source is.
4030	+	*/
4031	+	public void testMinimalCompletionStage_toCompletableFuture_normalCompletion() {
4032	+	for (boolean createIncomplete : new boolean[] { true, false })
4033	+	for (Integer v1 : new Integer[] { 1, null })
4034	+	{
4035	+	CompletableFuture<Integer> f = new CompletableFuture<>();
4036	+	CompletionStage<Integer> minimal = f.minimalCompletionStage();
4037	+	if (!createIncomplete) assertTrue(f.complete(v1));
4038	+	CompletableFuture<Integer> g = minimal.toCompletableFuture();
4039	+	if (createIncomplete) {
4040	+	checkIncomplete(f);
4041	+	checkIncomplete(g);
4042	+	assertTrue(f.complete(v1));
4043	+	}
4044	+	checkCompletedNormally(f, v1);
4045	+	checkCompletedNormally(g, v1);
4046	+	}}
4047	+
4048	+	/**
4049	+	* minimalStage.toCompletableFuture() returns a CompletableFuture that
4050	+	* is completed exceptionally when source is.
4051	+	*/
4052	+	public void testMinimalCompletionStage_toCompletableFuture_exceptionalCompletion() {
4053	+	for (boolean createIncomplete : new boolean[] { true, false })
4054	+	{
4055	+	CFException ex = new CFException();
4056	+	CompletableFuture<Integer> f = new CompletableFuture<>();
4057	+	CompletionStage<Integer> minimal = f.minimalCompletionStage();
4058	+	if (!createIncomplete) f.completeExceptionally(ex);
4059	+	CompletableFuture<Integer> g = minimal.toCompletableFuture();
4060	+	if (createIncomplete) {
4061	+	checkIncomplete(f);
4062	+	checkIncomplete(g);
4063	+	f.completeExceptionally(ex);
4064	+	}
4065	+	checkCompletedExceptionally(f, ex);
4066	+	checkCompletedWithWrappedException(g, ex);
4067	+	}}
4068	+
4069	+	/**
4070	+	* minimalStage.toCompletableFuture() gives mutable CompletableFuture
4071	+	*/
4072	+	public void testMinimalCompletionStage_toCompletableFuture_mutable() {
4073	+	for (Integer v1 : new Integer[] { 1, null })
4074	+	{
4075	+	CompletableFuture<Integer> f = new CompletableFuture<>();
4076	+	CompletionStage minimal = f.minimalCompletionStage();
4077	+	CompletableFuture<Integer> g = minimal.toCompletableFuture();
4078	+	assertTrue(g.complete(v1));
4079	+	checkCompletedNormally(g, v1);
4080	+	checkIncomplete(f);
4081	+	checkIncomplete(minimal.toCompletableFuture());
4082	+	}}
4083	+
4084	+	/**
4085	+	* minimalStage.toCompletableFuture().join() awaits completion
4086	+	*/
4087	+	public void testMinimalCompletionStage_toCompletableFuture_join() throws Exception {
4088	+	for (boolean createIncomplete : new boolean[] { true, false })
4089	+	for (Integer v1 : new Integer[] { 1, null })
4090	+	{
4091	+	CompletableFuture<Integer> f = new CompletableFuture<>();
4092	+	if (!createIncomplete) assertTrue(f.complete(v1));
4093	+	CompletionStage<Integer> minimal = f.minimalCompletionStage();
4094	+	if (createIncomplete) assertTrue(f.complete(v1));
4095	+	assertEquals(v1, minimal.toCompletableFuture().join());
4096	+	assertEquals(v1, minimal.toCompletableFuture().get());
4097	+	checkCompletedNormally(minimal.toCompletableFuture(), v1);
4098	+	}}
4099	+
4100	+	/**
4101	+	* Completion of a toCompletableFuture copy of a minimal stage
4102	+	* does not complete its source.
4103	+	*/
4104	+	public void testMinimalCompletionStage_toCompletableFuture_oneWayPropagation() {
4105	+	CompletableFuture<Integer> f = new CompletableFuture<>();
4106	+	CompletionStage<Integer> g = f.minimalCompletionStage();
4107	+	assertTrue(g.toCompletableFuture().complete(1));
4108	+	assertTrue(g.toCompletableFuture().complete(null));
4109	+	assertTrue(g.toCompletableFuture().cancel(true));
4110	+	assertTrue(g.toCompletableFuture().cancel(false));
4111	+	assertTrue(g.toCompletableFuture().completeExceptionally(new CFException()));
4112	+	checkIncomplete(g.toCompletableFuture());
4113	+	f.complete(1);
4114	+	checkCompletedNormally(g.toCompletableFuture(), 1);
4115	+	}
4116	+
4117	+	/** Demo utility method for external reliable toCompletableFuture */
4118	+	static <T> CompletableFuture<T> toCompletableFuture(CompletionStage<T> stage) {
4119	+	CompletableFuture<T> f = new CompletableFuture<>();
4120	+	stage.handle((T t, Throwable ex) -> {
4121	+	if (ex != null) f.completeExceptionally(ex);
4122	+	else f.complete(t);
4123	+	return null;
4124	+	});
4125	+	return f;
4126	+	}
4127	+
4128	+	/** Demo utility method to join a CompletionStage */
4129	+	static <T> T join(CompletionStage<T> stage) {
4130	+	return toCompletableFuture(stage).join();
4131	+	}
4132	+
4133	+	/**
4134	+	* Joining a minimal stage "by hand" works
4135	+	*/
4136	+	public void testMinimalCompletionStage_join_by_hand() {
4137	+	for (boolean createIncomplete : new boolean[] { true, false })
4138	+	for (Integer v1 : new Integer[] { 1, null })
4139	+	{
4140	+	CompletableFuture<Integer> f = new CompletableFuture<>();
4141	+	CompletionStage<Integer> minimal = f.minimalCompletionStage();
4142	+	CompletableFuture<Integer> g = new CompletableFuture<>();
4143	+	if (!createIncomplete) assertTrue(f.complete(v1));
4144	+	minimal.thenAccept(x -> g.complete(x));
4145	+	if (createIncomplete) assertTrue(f.complete(v1));
4146	+	g.join();
4147	+	checkCompletedNormally(g, v1);
4148	+	checkCompletedNormally(f, v1);
4149	+	assertEquals(v1, join(minimal));
4150	+	}}
4151	+
4152	+	static class Monad {
4153	+	static class ZeroException extends RuntimeException {
4154	+	public ZeroException() { super("monadic zero"); }
4155	+	}
4156	+	// "return", "unit"
4157	+	static <T> CompletableFuture<T> unit(T value) {
4158	+	return completedFuture(value);
4159	+	}
4160	+	// monadic zero ?
4161	+	static <T> CompletableFuture<T> zero() {
4162	+	return failedFuture(new ZeroException());
4163	+	}
4164	+	// >=>
4165	+	static <T,U,V> Function<T, CompletableFuture<V>> compose
4166	+	(Function<T, CompletableFuture<U>> f,
4167	+	Function<U, CompletableFuture<V>> g) {
4168	+	return x -> f.apply(x).thenCompose(g);
4169	+	}
4170	+
4171	+	static void assertZero(CompletableFuture<?> f) {
4172	+	try {
4173	+	f.getNow(null);
4174	+	throw new AssertionFailedError("should throw");
4175	+	} catch (CompletionException success) {
4176	+	assertTrue(success.getCause() instanceof ZeroException);
4177	+	}
4178	+	}
4179	+
4180	+	static <T> void assertFutureEquals(CompletableFuture<T> f,
4181	+	CompletableFuture<T> g) {
4182	+	T fval = null, gval = null;
4183	+	Throwable fex = null, gex = null;
4184	+
4185	+	try { fval = f.get(); }
4186	+	catch (ExecutionException ex) { fex = ex.getCause(); }
4187	+	catch (Throwable ex) { fex = ex; }
4188	+
4189	+	try { gval = g.get(); }
4190	+	catch (ExecutionException ex) { gex = ex.getCause(); }
4191	+	catch (Throwable ex) { gex = ex; }
4192	+
4193	+	if (fex != null || gex != null)
4194	+	assertSame(fex.getClass(), gex.getClass());
4195	+	else
4196	+	assertEquals(fval, gval);
4197	+	}
4198	+
4199	+	static class PlusFuture<T> extends CompletableFuture<T> {
4200	+	AtomicReference<Throwable> firstFailure = new AtomicReference<>(null);
4201	+	}
4202	+
4203	+	/** Implements "monadic plus". */
4204	+	static <T> CompletableFuture<T> plus(CompletableFuture<? extends T> f,
4205	+	CompletableFuture<? extends T> g) {
4206	+	PlusFuture<T> plus = new PlusFuture<T>();
4207	+	BiConsumer<T, Throwable> action = (T result, Throwable ex) -> {
4208	+	try {
4209	+	if (ex == null) {
4210	+	if (plus.complete(result))
4211	+	if (plus.firstFailure.get() != null)
4212	+	plus.firstFailure.set(null);
4213	+	}
4214	+	else if (plus.firstFailure.compareAndSet(null, ex)) {
4215	+	if (plus.isDone())
4216	+	plus.firstFailure.set(null);
4217	+	}
4218	+	else {
4219	+	// first failure has precedence
4220	+	Throwable first = plus.firstFailure.getAndSet(null);
4221	+
4222	+	// may fail with "Self-suppression not permitted"
4223	+	try { first.addSuppressed(ex); }
4224	+	catch (Exception ignored) {}
4225	+
4226	+	plus.completeExceptionally(first);
4227	+	}
4228	+	} catch (Throwable unexpected) {
4229	+	plus.completeExceptionally(unexpected);
4230	+	}
4231	+	};
4232	+	f.whenComplete(action);
4233	+	g.whenComplete(action);
4234	+	return plus;
4235	+	}
4236	+	}
4237	+
4238	+	/**
4239	+	* CompletableFuture is an additive monad - sort of.
4240	+	* https://en.wikipedia.org/wiki/Monad_(functional_programming)#Additive_monads
4241	+	*/
4242	+	public void testAdditiveMonad() throws Throwable {
4243	+	Function<Long, CompletableFuture<Long>> unit = Monad::unit;
4244	+	CompletableFuture<Long> zero = Monad.zero();
4245	+
4246	+	// Some mutually non-commutative functions
4247	+	Function<Long, CompletableFuture<Long>> triple
4248	+	= x -> Monad.unit(3 * x);
4249	+	Function<Long, CompletableFuture<Long>> inc
4250	+	= x -> Monad.unit(x + 1);
4251	+
4252	+	// unit is a right identity: m >>= unit === m
4253	+	Monad.assertFutureEquals(inc.apply(5L).thenCompose(unit),
4254	+	inc.apply(5L));
4255	+	// unit is a left identity: (unit x) >>= f === f x
4256	+	Monad.assertFutureEquals(unit.apply(5L).thenCompose(inc),
4257	+	inc.apply(5L));
4258	+
4259	+	// associativity: (m >>= f) >>= g === m >>= ( \x -> (f x >>= g) )
4260	+	Monad.assertFutureEquals(
4261	+	unit.apply(5L).thenCompose(inc).thenCompose(triple),
4262	+	unit.apply(5L).thenCompose(x -> inc.apply(x).thenCompose(triple)));
4263	+
4264	+	// The case for CompletableFuture as an additive monad is weaker...
4265	+
4266	+	// zero is a monadic zero
4267	+	Monad.assertZero(zero);
4268	+
4269	+	// left zero: zero >>= f === zero
4270	+	Monad.assertZero(zero.thenCompose(inc));
4271	+	// right zero: f >>= (\x -> zero) === zero
4272	+	Monad.assertZero(inc.apply(5L).thenCompose(x -> zero));
4273	+
4274	+	// f plus zero === f
4275	+	Monad.assertFutureEquals(Monad.unit(5L),
4276	+	Monad.plus(Monad.unit(5L), zero));
4277	+	// zero plus f === f
4278	+	Monad.assertFutureEquals(Monad.unit(5L),
4279	+	Monad.plus(zero, Monad.unit(5L)));
4280	+	// zero plus zero === zero
4281	+	Monad.assertZero(Monad.plus(zero, zero));
4282	+	{
4283	+	CompletableFuture<Long> f = Monad.plus(Monad.unit(5L),
4284	+	Monad.unit(8L));
4285	+	// non-determinism
4286	+	assertTrue(f.get() == 5L || f.get() == 8L);
4287	+	}
4288	+
4289	+	CompletableFuture<Long> godot = new CompletableFuture<>();
4290	+	// f plus godot === f (doesn't wait for godot)
4291	+	Monad.assertFutureEquals(Monad.unit(5L),
4292	+	Monad.plus(Monad.unit(5L), godot));
4293	+	// godot plus f === f (doesn't wait for godot)
4294	+	Monad.assertFutureEquals(Monad.unit(5L),
4295	+	Monad.plus(godot, Monad.unit(5L)));
4296	+	}
4297	+
4298	+	/** Test long recursive chains of CompletableFutures with cascading completions */
4299	+	public void testRecursiveChains() throws Throwable {
4300	+	for (ExecutionMode m : ExecutionMode.values())
4301	+	for (boolean addDeadEnds : new boolean[] { true, false })
4302	+	{
4303	+	final int val = 42;
4304	+	final int n = expensiveTests ? 1_000 : 2;
4305	+	CompletableFuture<Integer> head = new CompletableFuture<>();
4306	+	CompletableFuture<Integer> tail = head;
4307	+	for (int i = 0; i < n; i++) {
4308	+	if (addDeadEnds) m.thenApply(tail, v -> v + 1);
4309	+	tail = m.thenApply(tail, v -> v + 1);
4310	+	if (addDeadEnds) m.applyToEither(tail, tail, v -> v + 1);
4311	+	tail = m.applyToEither(tail, tail, v -> v + 1);
4312	+	if (addDeadEnds) m.thenCombine(tail, tail, (v, w) -> v + 1);
4313	+	tail = m.thenCombine(tail, tail, (v, w) -> v + 1);
4314	+	}
4315	+	head.complete(val);
4316	+	assertEquals(val + 3 * n, (int) tail.join());
4317	+	}}
4318	+
4319	+	/**
4320	+	* A single CompletableFuture with many dependents.
4321	+	* A demo of scalability - runtime is O(n).
4322	+	*/
4323	+	public void testManyDependents() throws Throwable {
4324	+	final int n = expensiveTests ? 1_000_000 : 10;
4325	+	final CompletableFuture<Void> head = new CompletableFuture<>();
4326	+	final CompletableFuture<Void> complete = CompletableFuture.completedFuture((Void)null);
4327	+	final AtomicInteger count = new AtomicInteger(0);
4328	+	for (int i = 0; i < n; i++) {
4329	+	head.thenRun(() -> count.getAndIncrement());
4330	+	head.thenAccept(x -> count.getAndIncrement());
4331	+	head.thenApply(x -> count.getAndIncrement());
4332	+
4333	+	head.runAfterBoth(complete, () -> count.getAndIncrement());
4334	+	head.thenAcceptBoth(complete, (x, y) -> count.getAndIncrement());
4335	+	head.thenCombine(complete, (x, y) -> count.getAndIncrement());
4336	+	complete.runAfterBoth(head, () -> count.getAndIncrement());
4337	+	complete.thenAcceptBoth(head, (x, y) -> count.getAndIncrement());
4338	+	complete.thenCombine(head, (x, y) -> count.getAndIncrement());
4339	+
4340	+	head.runAfterEither(new CompletableFuture<Void>(), () -> count.getAndIncrement());
4341	+	head.acceptEither(new CompletableFuture<Void>(), x -> count.getAndIncrement());
4342	+	head.applyToEither(new CompletableFuture<Void>(), x -> count.getAndIncrement());
4343	+	new CompletableFuture<Void>().runAfterEither(head, () -> count.getAndIncrement());
4344	+	new CompletableFuture<Void>().acceptEither(head, x -> count.getAndIncrement());
4345	+	new CompletableFuture<Void>().applyToEither(head, x -> count.getAndIncrement());
4346	+	}
4347	+	head.complete(null);
4348	+	assertEquals(5 * 3 * n, count.get());
4349	+	}
4350	+
4351	+	/** ant -Dvmoptions=-Xmx8m -Djsr166.expensiveTests=true -Djsr166.tckTestClass=CompletableFutureTest tck */
4352	+	public void testCoCompletionGarbageRetention() throws Throwable {
4353	+	final int n = expensiveTests ? 1_000_000 : 10;
4354	+	final CompletableFuture<Integer> incomplete = new CompletableFuture<>();
4355	+	CompletableFuture<Integer> f;
4356	+	for (int i = 0; i < n; i++) {
4357	+	f = new CompletableFuture<>();
4358	+	f.runAfterEither(incomplete, () -> {});
4359	+	f.complete(null);
4360	+
4361	+	f = new CompletableFuture<>();
4362	+	f.acceptEither(incomplete, x -> {});
4363	+	f.complete(null);
4364	+
4365	+	f = new CompletableFuture<>();
4366	+	f.applyToEither(incomplete, x -> x);
4367	+	f.complete(null);
4368	+
4369	+	f = new CompletableFuture<>();
4370	+	CompletableFuture.anyOf(new CompletableFuture<?>[] { f, incomplete });
4371	+	f.complete(null);
4372	+	}
4373	+
4374	+	for (int i = 0; i < n; i++) {
4375	+	f = new CompletableFuture<>();
4376	+	incomplete.runAfterEither(f, () -> {});
4377	+	f.complete(null);
4378	+
4379	+	f = new CompletableFuture<>();
4380	+	incomplete.acceptEither(f, x -> {});
4381	+	f.complete(null);
4382	+
4383	+	f = new CompletableFuture<>();
4384	+	incomplete.applyToEither(f, x -> x);
4385	+	f.complete(null);
4386	+
4387	+	f = new CompletableFuture<>();
4388	+	CompletableFuture.anyOf(new CompletableFuture<?>[] { incomplete, f });
4389	+	f.complete(null);
4390	+	}
4391	+	}
4392	+
4393	+	/**
4394	+	* Reproduction recipe for:
4395	+	* 8160402: Garbage retention with CompletableFuture.anyOf
4396	+	* 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
4397	+	*/
4398	+	public void testAnyOfGarbageRetention() throws Throwable {
4399	+	for (Integer v : new Integer[] { 1, null })
4400	+	{
4401	+	final int n = expensiveTests ? 100_000 : 10;
4402	+	CompletableFuture<Integer>[] fs
4403	+	= (CompletableFuture<Integer>[]) new CompletableFuture<?>[100];
4404	+	for (int i = 0; i < fs.length; i++)
4405	+	fs[i] = new CompletableFuture<>();
4406	+	fs[fs.length - 1].complete(v);
4407	+	for (int i = 0; i < n; i++)
4408	+	checkCompletedNormally(CompletableFuture.anyOf(fs), v);
4409	+	}}
4410	+
4411	+	/**
4412	+	* Checks for garbage retention with allOf.
4413	+	*
4414	+	* As of 2016-07, fails with OOME:
4415	+	* ant -Dvmoptions=-Xmx8m -Djsr166.expensiveTests=true -Djsr166.tckTestClass=CompletableFutureTest -Djsr166.methodFilter=testCancelledAllOfGarbageRetention tck
4416	+	*/
4417	+	public void testCancelledAllOfGarbageRetention() throws Throwable {
4418	+	final int n = expensiveTests ? 100_000 : 10;
4419	+	CompletableFuture<Integer>[] fs
4420	+	= (CompletableFuture<Integer>[]) new CompletableFuture<?>[100];
4421	+	for (int i = 0; i < fs.length; i++)
4422	+	fs[i] = new CompletableFuture<>();
4423	+	for (int i = 0; i < n; i++)
4424	+	assertTrue(CompletableFuture.allOf(fs).cancel(false));
4425	+	}
4426	+
4427	+	/**
4428	+	* Checks for garbage retention when a dependent future is
4429	+	* cancelled and garbage-collected.
4430	+	* 8161600: Garbage retention when source CompletableFutures are never completed
4431	+	*
4432	+	* As of 2016-07, fails with OOME:
4433	+	* ant -Dvmoptions=-Xmx8m -Djsr166.expensiveTests=true -Djsr166.tckTestClass=CompletableFutureTest -Djsr166.methodFilter=testCancelledGarbageRetention tck
4434	+	*/
4435	+	public void testCancelledGarbageRetention() throws Throwable {
4436	+	final int n = expensiveTests ? 100_000 : 10;
4437	+	CompletableFuture<Integer> neverCompleted = new CompletableFuture<>();
4438	+	for (int i = 0; i < n; i++)
4439	+	assertTrue(neverCompleted.thenRun(() -> {}).cancel(true));
4440	+	}
4441	+
4442	+	/**
4443	+	* Checks for garbage retention when MinimalStage.toCompletableFuture()
4444	+	* is invoked many times.
4445	+	* 8161600: Garbage retention when source CompletableFutures are never completed
4446	+	*
4447	+	* As of 2016-07, fails with OOME:
4448	+	* ant -Dvmoptions=-Xmx8m -Djsr166.expensiveTests=true -Djsr166.tckTestClass=CompletableFutureTest -Djsr166.methodFilter=testToCompletableFutureGarbageRetention tck
4449	+	*/
4450	+	public void testToCompletableFutureGarbageRetention() throws Throwable {
4451	+	final int n = expensiveTests ? 900_000 : 10;
4452	+	CompletableFuture<Integer> neverCompleted = new CompletableFuture<>();
4453	+	CompletionStage minimal = neverCompleted.minimalCompletionStage();
4454	+	for (int i = 0; i < n; i++)
4455	+	assertTrue(minimal.toCompletableFuture().cancel(true));
4456	+	}
4457	+
4458	+	//     static <U> U join(CompletionStage<U> stage) {
4459	+	//         CompletableFuture<U> f = new CompletableFuture<>();
4460	+	//         stage.whenComplete((v, ex) -> {
4461	+	//             if (ex != null) f.completeExceptionally(ex); else f.complete(v);
4462	+	//         });
4463	+	//         return f.join();
4464	+	//     }
4465	+
4466	+	//     static <U> boolean isDone(CompletionStage<U> stage) {
4467	+	//         CompletableFuture<U> f = new CompletableFuture<>();
4468	+	//         stage.whenComplete((v, ex) -> {
4469	+	//             if (ex != null) f.completeExceptionally(ex); else f.complete(v);
4470	+	//         });
4471	+	//         return f.isDone();
4472	+	//     }
4473	+
4474	+	//     static <U> U join2(CompletionStage<U> stage) {
4475	+	//         return stage.toCompletableFuture().copy().join();
4476	+	//     }
4477	+
4478	+	//     static <U> boolean isDone2(CompletionStage<U> stage) {
4479	+	//         return stage.toCompletableFuture().copy().isDone();
4480	+	//     }
4481	+
4482		}

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