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Comparing jsr166/src/test/tck/CompletableFutureTest.java (file contents):
Revision 1.80 by jsr166, Mon Jun 16 17:29:03 2014 UTC vs.
Revision 1.153 by jsr166, Sun Jun 26 19:17:08 2016 UTC

#	Line 5 | Line 5
5		* http://creativecommons.org/publicdomain/zero/1.0/
6		*/
7
8	<	import junit.framework.*;
8	>	import static java.util.concurrent.TimeUnit.MILLISECONDS;
9	>	import static java.util.concurrent.TimeUnit.SECONDS;
10	>	import static java.util.concurrent.CompletableFuture.completedFuture;
11	>	import static java.util.concurrent.CompletableFuture.failedFuture;
12	>
13	>	import java.lang.reflect.Method;
14	>	import java.lang.reflect.Modifier;
15	>
16	>	import java.util.stream.Collectors;
17	>	import java.util.stream.Stream;
18	>
19	>	import java.util.ArrayList;
20	>	import java.util.Arrays;
21	>	import java.util.List;
22	>	import java.util.Objects;
23	>	import java.util.Set;
24		import java.util.concurrent.Callable;
10	–	import java.util.concurrent.Executor;
11	–	import java.util.concurrent.ExecutorService;
12	–	import java.util.concurrent.Executors;
25		import java.util.concurrent.CancellationException;
14	–	import java.util.concurrent.CountDownLatch;
15	–	import java.util.concurrent.ExecutionException;
16	–	import java.util.concurrent.Future;
26		import java.util.concurrent.CompletableFuture;
27		import java.util.concurrent.CompletionException;
28		import java.util.concurrent.CompletionStage;
29	+	import java.util.concurrent.ExecutionException;
30	+	import java.util.concurrent.Executor;
31		import java.util.concurrent.ForkJoinPool;
32		import java.util.concurrent.ForkJoinTask;
33	+	import java.util.concurrent.RejectedExecutionException;
34		import java.util.concurrent.TimeoutException;
35	+	import java.util.concurrent.TimeUnit;
36		import java.util.concurrent.atomic.AtomicInteger;
37	<	import static java.util.concurrent.TimeUnit.MILLISECONDS;
25	<	import static java.util.concurrent.TimeUnit.SECONDS;
26	<	import java.util.*;
27	<	import java.util.function.Supplier;
28	<	import java.util.function.Consumer;
37	>	import java.util.concurrent.atomic.AtomicReference;
38		import java.util.function.BiConsumer;
30	–	import java.util.function.Function;
39		import java.util.function.BiFunction;
40	+	import java.util.function.Consumer;
41	+	import java.util.function.Function;
42	+	import java.util.function.Predicate;
43	+	import java.util.function.Supplier;
44	+
45	+	import junit.framework.AssertionFailedError;
46	+	import junit.framework.Test;
47	+	import junit.framework.TestSuite;
48
49		public class CompletableFutureTest extends JSR166TestCase {
50
51		public static void main(String[] args) {
52	<	junit.textui.TestRunner.run(suite());
52	>	main(suite(), args);
53		}
54		public static Test suite() {
55		return new TestSuite(CompletableFutureTest.class);
#	Line 44 | Line 60 | public class CompletableFutureTest exten
60		void checkIncomplete(CompletableFuture<?> f) {
61		assertFalse(f.isDone());
62		assertFalse(f.isCancelled());
63	<	assertTrue(f.toString().contains("[Not completed]"));
63	>	assertTrue(f.toString().contains("Not completed"));
64		try {
65		assertNull(f.getNow(null));
66		} catch (Throwable fail) { threadUnexpectedException(fail); }
#	Line 57 | Line 73 | public class CompletableFutureTest exten
73		}
74
75		<T> void checkCompletedNormally(CompletableFuture<T> f, T value) {
76	<	try {
77	<	assertEquals(value, f.get(LONG_DELAY_MS, MILLISECONDS));
62	<	} catch (Throwable fail) { threadUnexpectedException(fail); }
76	>	checkTimedGet(f, value);
77	>
78		try {
79		assertEquals(value, f.join());
80		} catch (Throwable fail) { threadUnexpectedException(fail); }
#	Line 75 | Line 90 | public class CompletableFutureTest exten
90		assertTrue(f.toString().contains("[Completed normally]"));
91		}
92
93	<	void checkCompletedWithWrappedCFException(CompletableFuture<?> f) {
94	<	try {
95	<	f.get(LONG_DELAY_MS, MILLISECONDS);
96	<	shouldThrow();
97	<	} catch (ExecutionException success) {
98	<	assertTrue(success.getCause() instanceof CFException);
99	<	} catch (Throwable fail) { threadUnexpectedException(fail); }
100	<	try {
101	<	f.join();
102	<	shouldThrow();
103	<	} catch (CompletionException success) {
104	<	assertTrue(success.getCause() instanceof CFException);
105	<	}
106	<	try {
107	<	f.getNow(null);
108	<	shouldThrow();
109	<	} catch (CompletionException success) {
95	<	assertTrue(success.getCause() instanceof CFException);
93	>	/**
94	>	* Returns the "raw" internal exceptional completion of f,
95	>	* without any additional wrapping with CompletionException.
96	>	*/
97	>	<U> Throwable exceptionalCompletion(CompletableFuture<U> f) {
98	>	// handle (and whenComplete) can distinguish between "direct"
99	>	// and "wrapped" exceptional completion
100	>	return f.handle((U u, Throwable t) -> t).join();
101	>	}
102	>
103	>	void checkCompletedExceptionally(CompletableFuture<?> f,
104	>	boolean wrapped,
105	>	Consumer<Throwable> checker) {
106	>	Throwable cause = exceptionalCompletion(f);
107	>	if (wrapped) {
108	>	assertTrue(cause instanceof CompletionException);
109	>	cause = cause.getCause();
110		}
111	<	try {
98	<	f.get();
99	<	shouldThrow();
100	<	} catch (ExecutionException success) {
101	<	assertTrue(success.getCause() instanceof CFException);
102	<	} catch (Throwable fail) { threadUnexpectedException(fail); }
103	<	assertTrue(f.isDone());
104	<	assertFalse(f.isCancelled());
105	<	assertTrue(f.toString().contains("[Completed exceptionally]"));
106	<	}
111	>	checker.accept(cause);
112
113	<	<U> void checkCompletedExceptionallyWithRootCause(CompletableFuture<U> f,
109	<	Throwable ex) {
113	>	long startTime = System.nanoTime();
114		try {
115		f.get(LONG_DELAY_MS, MILLISECONDS);
116		shouldThrow();
117		} catch (ExecutionException success) {
118	<	assertSame(ex, success.getCause());
118	>	assertSame(cause, success.getCause());
119		} catch (Throwable fail) { threadUnexpectedException(fail); }
120	+	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS / 2);
121	+
122		try {
123		f.join();
124		shouldThrow();
125		} catch (CompletionException success) {
126	<	assertSame(ex, success.getCause());
127	<	}
126	>	assertSame(cause, success.getCause());
127	>	} catch (Throwable fail) { threadUnexpectedException(fail); }
128	>
129		try {
130		f.getNow(null);
131		shouldThrow();
132		} catch (CompletionException success) {
133	<	assertSame(ex, success.getCause());
134	<	}
133	>	assertSame(cause, success.getCause());
134	>	} catch (Throwable fail) { threadUnexpectedException(fail); }
135	>
136		try {
137		f.get();
138		shouldThrow();
139		} catch (ExecutionException success) {
140	<	assertSame(ex, success.getCause());
140	>	assertSame(cause, success.getCause());
141		} catch (Throwable fail) { threadUnexpectedException(fail); }
142
135	–	assertTrue(f.isDone());
143		assertFalse(f.isCancelled());
144	+	assertTrue(f.isDone());
145	+	assertTrue(f.isCompletedExceptionally());
146		assertTrue(f.toString().contains("[Completed exceptionally]"));
147		}
148
149	<	<U> void checkCompletedWithWrappedException(CompletableFuture<U> f,
150	<	Throwable ex) {
151	<	checkCompletedExceptionallyWithRootCause(f, ex);
143	<	try {
144	<	CompletableFuture<Throwable> spy = f.handle
145	<	((U u, Throwable t) -> t);
146	<	assertTrue(spy.join() instanceof CompletionException);
147	<	assertSame(ex, spy.join().getCause());
148	<	} catch (Throwable fail) { threadUnexpectedException(fail); }
149	>	void checkCompletedWithWrappedCFException(CompletableFuture<?> f) {
150	>	checkCompletedExceptionally(f, true,
151	>	(t) -> assertTrue(t instanceof CFException));
152		}
153
154	<	<U> void checkCompletedExceptionally(CompletableFuture<U> f, Throwable ex) {
155	<	checkCompletedExceptionallyWithRootCause(f, ex);
156	<	try {
157	<	CompletableFuture<Throwable> spy = f.handle
158	<	((U u, Throwable t) -> t);
159	<	assertSame(ex, spy.join());
160	<	} catch (Throwable fail) { threadUnexpectedException(fail); }
154	>	void checkCompletedWithWrappedCancellationException(CompletableFuture<?> f) {
155	>	checkCompletedExceptionally(f, true,
156	>	(t) -> assertTrue(t instanceof CancellationException));
157	>	}
158	>
159	>	void checkCompletedWithTimeoutException(CompletableFuture<?> f) {
160	>	checkCompletedExceptionally(f, false,
161	>	(t) -> assertTrue(t instanceof TimeoutException));
162	>	}
163	>
164	>	void checkCompletedWithWrappedException(CompletableFuture<?> f,
165	>	Throwable ex) {
166	>	checkCompletedExceptionally(f, true, (t) -> assertSame(t, ex));
167	>	}
168	>
169	>	void checkCompletedExceptionally(CompletableFuture<?> f, Throwable ex) {
170	>	checkCompletedExceptionally(f, false, (t) -> assertSame(t, ex));
171		}
172
173		void checkCancelled(CompletableFuture<?> f) {
174	+	long startTime = System.nanoTime();
175		try {
176		f.get(LONG_DELAY_MS, MILLISECONDS);
177		shouldThrow();
178		} catch (CancellationException success) {
179		} catch (Throwable fail) { threadUnexpectedException(fail); }
180	+	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS / 2);
181	+
182		try {
183		f.join();
184		shouldThrow();
#	Line 176 | Line 192 | public class CompletableFutureTest exten
192		shouldThrow();
193		} catch (CancellationException success) {
194		} catch (Throwable fail) { threadUnexpectedException(fail); }
179	–	assertTrue(f.isDone());
180	–	assertTrue(f.isCompletedExceptionally());
181	–	assertTrue(f.isCancelled());
182	–	assertTrue(f.toString().contains("[Completed exceptionally]"));
183	–	}
195
196	<	void checkCompletedWithWrappedCancellationException(CompletableFuture<?> f) {
197	<	try {
187	<	f.get(LONG_DELAY_MS, MILLISECONDS);
188	<	shouldThrow();
189	<	} catch (ExecutionException success) {
190	<	assertTrue(success.getCause() instanceof CancellationException);
191	<	} catch (Throwable fail) { threadUnexpectedException(fail); }
192	<	try {
193	<	f.join();
194	<	shouldThrow();
195	<	} catch (CompletionException success) {
196	<	assertTrue(success.getCause() instanceof CancellationException);
197	<	}
198	<	try {
199	<	f.getNow(null);
200	<	shouldThrow();
201	<	} catch (CompletionException success) {
202	<	assertTrue(success.getCause() instanceof CancellationException);
203	<	}
204	<	try {
205	<	f.get();
206	<	shouldThrow();
207	<	} catch (ExecutionException success) {
208	<	assertTrue(success.getCause() instanceof CancellationException);
209	<	} catch (Throwable fail) { threadUnexpectedException(fail); }
196	>	assertTrue(exceptionalCompletion(f) instanceof CancellationException);
197	>
198		assertTrue(f.isDone());
211	–	assertFalse(f.isCancelled());
199		assertTrue(f.isCompletedExceptionally());
200	+	assertTrue(f.isCancelled());
201		assertTrue(f.toString().contains("[Completed exceptionally]"));
202		}
203
#	Line 257 | Line 245 | public class CompletableFutureTest exten
245		{
246		CompletableFuture<Integer> f = new CompletableFuture<>();
247		checkIncomplete(f);
248	<	assertTrue(f.cancel(true));
249	<	assertTrue(f.cancel(true));
248	>	assertTrue(f.cancel(mayInterruptIfRunning));
249	>	assertTrue(f.cancel(mayInterruptIfRunning));
250	>	assertTrue(f.cancel(!mayInterruptIfRunning));
251		checkCancelled(f);
252		}}
253
#	Line 471 | Line 460 | public class CompletableFutureTest exten
460		class FailingSupplier extends CheckedAction
461		implements Supplier<Integer>
462		{
463	<	FailingSupplier(ExecutionMode m) { super(m); }
463	>	final CFException ex;
464	>	FailingSupplier(ExecutionMode m) { super(m); ex = new CFException(); }
465		public Integer get() {
466		invoked();
467	<	throw new CFException();
467	>	throw ex;
468		}
469		}
470
471		class FailingConsumer extends CheckedIntegerAction
472		implements Consumer<Integer>
473		{
474	<	FailingConsumer(ExecutionMode m) { super(m); }
474	>	final CFException ex;
475	>	FailingConsumer(ExecutionMode m) { super(m); ex = new CFException(); }
476		public void accept(Integer x) {
477		invoked();
478		value = x;
479	<	throw new CFException();
479	>	throw ex;
480		}
481		}
482
483		class FailingBiConsumer extends CheckedIntegerAction
484		implements BiConsumer<Integer, Integer>
485		{
486	<	FailingBiConsumer(ExecutionMode m) { super(m); }
486	>	final CFException ex;
487	>	FailingBiConsumer(ExecutionMode m) { super(m); ex = new CFException(); }
488		public void accept(Integer x, Integer y) {
489		invoked();
490		value = subtract(x, y);
491	<	throw new CFException();
491	>	throw ex;
492		}
493		}
494
495		class FailingFunction extends CheckedIntegerAction
496		implements Function<Integer, Integer>
497		{
498	<	FailingFunction(ExecutionMode m) { super(m); }
498	>	final CFException ex;
499	>	FailingFunction(ExecutionMode m) { super(m); ex = new CFException(); }
500		public Integer apply(Integer x) {
501		invoked();
502		value = x;
503	<	throw new CFException();
503	>	throw ex;
504		}
505		}
506
507		class FailingBiFunction extends CheckedIntegerAction
508		implements BiFunction<Integer, Integer, Integer>
509		{
510	<	FailingBiFunction(ExecutionMode m) { super(m); }
510	>	final CFException ex;
511	>	FailingBiFunction(ExecutionMode m) { super(m); ex = new CFException(); }
512		public Integer apply(Integer x, Integer y) {
513		invoked();
514		value = subtract(x, y);
515	<	throw new CFException();
515	>	throw ex;
516		}
517		}
518
519		class FailingRunnable extends CheckedAction implements Runnable {
520	<	FailingRunnable(ExecutionMode m) { super(m); }
520	>	final CFException ex;
521	>	FailingRunnable(ExecutionMode m) { super(m); ex = new CFException(); }
522		public void run() {
523		invoked();
524	<	throw new CFException();
524	>	throw ex;
525		}
526		}
527
533	–
528		class CompletableFutureInc extends CheckedIntegerAction
529		implements Function<Integer, CompletableFuture<Integer>>
530		{
#	Line 547 | Line 541 | public class CompletableFutureTest exten
541		class FailingCompletableFutureFunction extends CheckedIntegerAction
542		implements Function<Integer, CompletableFuture<Integer>>
543		{
544	<	FailingCompletableFutureFunction(ExecutionMode m) { super(m); }
544	>	final CFException ex;
545	>	FailingCompletableFutureFunction(ExecutionMode m) { super(m); ex = new CFException(); }
546		public CompletableFuture<Integer> apply(Integer x) {
547		invoked();
548		value = x;
549	<	throw new CFException();
549	>	throw ex;
550		}
551		}
552
#	Line 569 | Line 564 | public class CompletableFutureTest exten
564		}
565		}
566
567	+	static final boolean defaultExecutorIsCommonPool
568	+	= ForkJoinPool.getCommonPoolParallelism() > 1;
569	+
570		/**
571		* Permits the testing of parallel code for the 3 different
572		* execution modes without copy/pasting all the test methods.
573		*/
574		enum ExecutionMode {
575	<	DEFAULT {
575	>	SYNC {
576		public void checkExecutionMode() {
577		assertFalse(ThreadExecutor.startedCurrentThread());
578		assertNull(ForkJoinTask.getPool());
#	Line 650 | Line 648 | public class CompletableFutureTest exten
648
649		ASYNC {
650		public void checkExecutionMode() {
651	<	assertSame(ForkJoinPool.commonPool(),
652	<	ForkJoinTask.getPool());
651	>	assertEquals(defaultExecutorIsCommonPool,
652	>	(ForkJoinPool.commonPool() == ForkJoinTask.getPool()));
653		}
654		public CompletableFuture<Void> runAsync(Runnable a) {
655		return CompletableFuture.runAsync(a);
#	Line 850 | Line 848 | public class CompletableFutureTest exten
848		if (!createIncomplete) assertTrue(f.complete(v1));
849		final CompletableFuture<Integer> g = f.exceptionally
850		((Throwable t) -> {
853	–	// Should not be called
851		a.getAndIncrement();
852	<	throw new AssertionError();
852	>	threadFail("should not be called");
853	>	return null;            // unreached
854		});
855		if (createIncomplete) assertTrue(f.complete(v1));
856
#	Line 875 | Line 873 | public class CompletableFutureTest exten
873		if (!createIncomplete) f.completeExceptionally(ex);
874		final CompletableFuture<Integer> g = f.exceptionally
875		((Throwable t) -> {
876	<	ExecutionMode.DEFAULT.checkExecutionMode();
876	>	ExecutionMode.SYNC.checkExecutionMode();
877		threadAssertSame(t, ex);
878		a.getAndIncrement();
879		return v1;
#	Line 886 | Line 884 | public class CompletableFutureTest exten
884		assertEquals(1, a.get());
885		}}
886
887	+	/**
888	+	* If an "exceptionally action" throws an exception, it completes
889	+	* exceptionally with that exception
890	+	*/
891		public void testExceptionally_exceptionalCompletionActionFailed() {
892		for (boolean createIncomplete : new boolean[] { true, false })
891	–	for (Integer v1 : new Integer[] { 1, null })
893		{
894		final AtomicInteger a = new AtomicInteger(0);
895		final CFException ex1 = new CFException();
#	Line 897 | Line 898 | public class CompletableFutureTest exten
898		if (!createIncomplete) f.completeExceptionally(ex1);
899		final CompletableFuture<Integer> g = f.exceptionally
900		((Throwable t) -> {
901	<	ExecutionMode.DEFAULT.checkExecutionMode();
901	>	ExecutionMode.SYNC.checkExecutionMode();
902		threadAssertSame(t, ex1);
903		a.getAndIncrement();
904		throw ex2;
#	Line 905 | Line 906 | public class CompletableFutureTest exten
906		if (createIncomplete) f.completeExceptionally(ex1);
907
908		checkCompletedWithWrappedException(g, ex2);
909	+	checkCompletedExceptionally(f, ex1);
910		assertEquals(1, a.get());
911		}}
912
#	Line 912 | Line 914 | public class CompletableFutureTest exten
914		* whenComplete action executes on normal completion, propagating
915		* source result.
916		*/
917	<	public void testWhenComplete_normalCompletion1() {
917	>	public void testWhenComplete_normalCompletion() {
918		for (ExecutionMode m : ExecutionMode.values())
919		for (boolean createIncomplete : new boolean[] { true, false })
920		for (Integer v1 : new Integer[] { 1, null })
#	Line 922 | Line 924 | public class CompletableFutureTest exten
924		if (!createIncomplete) assertTrue(f.complete(v1));
925		final CompletableFuture<Integer> g = m.whenComplete
926		(f,
927	<	(Integer x, Throwable t) -> {
927	>	(Integer result, Throwable t) -> {
928		m.checkExecutionMode();
929	<	threadAssertSame(x, v1);
929	>	threadAssertSame(result, v1);
930		threadAssertNull(t);
931		a.getAndIncrement();
932		});
#	Line 942 | Line 944 | public class CompletableFutureTest exten
944		public void testWhenComplete_exceptionalCompletion() {
945		for (ExecutionMode m : ExecutionMode.values())
946		for (boolean createIncomplete : new boolean[] { true, false })
945	–	for (Integer v1 : new Integer[] { 1, null })
947		{
948		final AtomicInteger a = new AtomicInteger(0);
949		final CFException ex = new CFException();
#	Line 950 | Line 951 | public class CompletableFutureTest exten
951		if (!createIncomplete) f.completeExceptionally(ex);
952		final CompletableFuture<Integer> g = m.whenComplete
953		(f,
954	<	(Integer x, Throwable t) -> {
954	>	(Integer result, Throwable t) -> {
955		m.checkExecutionMode();
956	<	threadAssertNull(x);
956	>	threadAssertNull(result);
957		threadAssertSame(t, ex);
958		a.getAndIncrement();
959		});
#	Line 977 | Line 978 | public class CompletableFutureTest exten
978		if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
979		final CompletableFuture<Integer> g = m.whenComplete
980		(f,
981	<	(Integer x, Throwable t) -> {
981	>	(Integer result, Throwable t) -> {
982		m.checkExecutionMode();
983	<	threadAssertNull(x);
983	>	threadAssertNull(result);
984		threadAssertTrue(t instanceof CancellationException);
985		a.getAndIncrement();
986		});
#	Line 994 | Line 995 | public class CompletableFutureTest exten
995		* If a whenComplete action throws an exception when triggered by
996		* a normal completion, it completes exceptionally
997		*/
998	<	public void testWhenComplete_actionFailed() {
998	>	public void testWhenComplete_sourceCompletedNormallyActionFailed() {
999		for (boolean createIncomplete : new boolean[] { true, false })
1000		for (ExecutionMode m : ExecutionMode.values())
1001		for (Integer v1 : new Integer[] { 1, null })
#	Line 1005 | Line 1006 | public class CompletableFutureTest exten
1006		if (!createIncomplete) assertTrue(f.complete(v1));
1007		final CompletableFuture<Integer> g = m.whenComplete
1008		(f,
1009	<	(Integer x, Throwable t) -> {
1009	>	(Integer result, Throwable t) -> {
1010		m.checkExecutionMode();
1011	<	threadAssertSame(x, v1);
1011	>	threadAssertSame(result, v1);
1012		threadAssertNull(t);
1013		a.getAndIncrement();
1014		throw ex;
#	Line 1022 | Line 1023 | public class CompletableFutureTest exten
1023		/**
1024		* If a whenComplete action throws an exception when triggered by
1025		* a source completion that also throws an exception, the source
1026	<	* exception takes precedence.
1026	>	* exception takes precedence (unlike handle)
1027		*/
1028	<	public void testWhenComplete_actionFailedSourceFailed() {
1028	>	public void testWhenComplete_sourceFailedActionFailed() {
1029		for (boolean createIncomplete : new boolean[] { true, false })
1030		for (ExecutionMode m : ExecutionMode.values())
1030	–	for (Integer v1 : new Integer[] { 1, null })
1031		{
1032		final AtomicInteger a = new AtomicInteger(0);
1033		final CFException ex1 = new CFException();
#	Line 1037 | Line 1037 | public class CompletableFutureTest exten
1037		if (!createIncomplete) f.completeExceptionally(ex1);
1038		final CompletableFuture<Integer> g = m.whenComplete
1039		(f,
1040	<	(Integer x, Throwable t) -> {
1040	>	(Integer result, Throwable t) -> {
1041		m.checkExecutionMode();
1042		threadAssertSame(t, ex1);
1043	<	threadAssertNull(x);
1043	>	threadAssertNull(result);
1044		a.getAndIncrement();
1045		throw ex2;
1046		});
#	Line 1048 | Line 1048 | public class CompletableFutureTest exten
1048
1049		checkCompletedWithWrappedException(g, ex1);
1050		checkCompletedExceptionally(f, ex1);
1051	+	if (testImplementationDetails) {
1052	+	assertEquals(1, ex1.getSuppressed().length);
1053	+	assertSame(ex2, ex1.getSuppressed()[0]);
1054	+	}
1055		assertEquals(1, a.get());
1056		}}
1057
#	Line 1065 | Line 1069 | public class CompletableFutureTest exten
1069		if (!createIncomplete) assertTrue(f.complete(v1));
1070		final CompletableFuture<Integer> g = m.handle
1071		(f,
1072	<	(Integer x, Throwable t) -> {
1072	>	(Integer result, Throwable t) -> {
1073		m.checkExecutionMode();
1074	<	threadAssertSame(x, v1);
1074	>	threadAssertSame(result, v1);
1075		threadAssertNull(t);
1076		a.getAndIncrement();
1077		return inc(v1);
#	Line 1094 | Line 1098 | public class CompletableFutureTest exten
1098		if (!createIncomplete) f.completeExceptionally(ex);
1099		final CompletableFuture<Integer> g = m.handle
1100		(f,
1101	<	(Integer x, Throwable t) -> {
1101	>	(Integer result, Throwable t) -> {
1102		m.checkExecutionMode();
1103	<	threadAssertNull(x);
1103	>	threadAssertNull(result);
1104		threadAssertSame(t, ex);
1105		a.getAndIncrement();
1106		return v1;
#	Line 1123 | Line 1127 | public class CompletableFutureTest exten
1127		if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
1128		final CompletableFuture<Integer> g = m.handle
1129		(f,
1130	<	(Integer x, Throwable t) -> {
1130	>	(Integer result, Throwable t) -> {
1131		m.checkExecutionMode();
1132	<	threadAssertNull(x);
1132	>	threadAssertNull(result);
1133		threadAssertTrue(t instanceof CancellationException);
1134		a.getAndIncrement();
1135		return v1;
#	Line 1138 | Line 1142 | public class CompletableFutureTest exten
1142		}}
1143
1144		/**
1145	<	* handle result completes exceptionally if action does
1145	>	* If a "handle action" throws an exception when triggered by
1146	>	* a normal completion, it completes exceptionally
1147		*/
1148	<	public void testHandle_sourceFailedActionFailed() {
1148	>	public void testHandle_sourceCompletedNormallyActionFailed() {
1149		for (ExecutionMode m : ExecutionMode.values())
1150		for (boolean createIncomplete : new boolean[] { true, false })
1151	+	for (Integer v1 : new Integer[] { 1, null })
1152		{
1153		final CompletableFuture<Integer> f = new CompletableFuture<>();
1154		final AtomicInteger a = new AtomicInteger(0);
1155	<	final CFException ex1 = new CFException();
1156	<	final CFException ex2 = new CFException();
1151	<	if (!createIncomplete) f.completeExceptionally(ex1);
1155	>	final CFException ex = new CFException();
1156	>	if (!createIncomplete) assertTrue(f.complete(v1));
1157		final CompletableFuture<Integer> g = m.handle
1158		(f,
1159	<	(Integer x, Throwable t) -> {
1159	>	(Integer result, Throwable t) -> {
1160		m.checkExecutionMode();
1161	<	threadAssertNull(x);
1162	<	threadAssertSame(ex1, t);
1161	>	threadAssertSame(result, v1);
1162	>	threadAssertNull(t);
1163		a.getAndIncrement();
1164	<	throw ex2;
1164	>	throw ex;
1165		});
1166	<	if (createIncomplete) f.completeExceptionally(ex1);
1166	>	if (createIncomplete) assertTrue(f.complete(v1));
1167
1168	<	checkCompletedWithWrappedException(g, ex2);
1169	<	checkCompletedExceptionally(f, ex1);
1168	>	checkCompletedWithWrappedException(g, ex);
1169	>	checkCompletedNormally(f, v1);
1170		assertEquals(1, a.get());
1171		}}
1172
1173	<	public void testHandle_sourceCompletedNormallyActionFailed() {
1174	<	for (ExecutionMode m : ExecutionMode.values())
1173	>	/**
1174	>	* If a "handle action" throws an exception when triggered by
1175	>	* a source completion that also throws an exception, the action
1176	>	* exception takes precedence (unlike whenComplete)
1177	>	*/
1178	>	public void testHandle_sourceFailedActionFailed() {
1179		for (boolean createIncomplete : new boolean[] { true, false })
1180	<	for (Integer v1 : new Integer[] { 1, null })
1180	>	for (ExecutionMode m : ExecutionMode.values())
1181		{
1173	–	final CompletableFuture<Integer> f = new CompletableFuture<>();
1182		final AtomicInteger a = new AtomicInteger(0);
1183	<	final CFException ex = new CFException();
1184	<	if (!createIncomplete) assertTrue(f.complete(v1));
1183	>	final CFException ex1 = new CFException();
1184	>	final CFException ex2 = new CFException();
1185	>	final CompletableFuture<Integer> f = new CompletableFuture<>();
1186	>
1187	>	if (!createIncomplete) f.completeExceptionally(ex1);
1188		final CompletableFuture<Integer> g = m.handle
1189		(f,
1190	<	(Integer x, Throwable t) -> {
1190	>	(Integer result, Throwable t) -> {
1191		m.checkExecutionMode();
1192	<	threadAssertSame(x, v1);
1193	<	threadAssertNull(t);
1192	>	threadAssertNull(result);
1193	>	threadAssertSame(ex1, t);
1194		a.getAndIncrement();
1195	<	throw ex;
1195	>	throw ex2;
1196		});
1197	<	if (createIncomplete) assertTrue(f.complete(v1));
1197	>	if (createIncomplete) f.completeExceptionally(ex1);
1198
1199	<	checkCompletedWithWrappedException(g, ex);
1200	<	checkCompletedNormally(f, v1);
1199	>	checkCompletedWithWrappedException(g, ex2);
1200	>	checkCompletedExceptionally(f, ex1);
1201		assertEquals(1, a.get());
1202		}}
1203
#	Line 1219 | Line 1230 | public class CompletableFutureTest exten
1230		{
1231		final FailingRunnable r = new FailingRunnable(m);
1232		final CompletableFuture<Void> f = m.runAsync(r);
1233	<	checkCompletedWithWrappedCFException(f);
1233	>	checkCompletedWithWrappedException(f, r.ex);
1234		r.assertInvoked();
1235		}}
1236
#	Line 1253 | Line 1264 | public class CompletableFutureTest exten
1264		{
1265		FailingSupplier r = new FailingSupplier(m);
1266		CompletableFuture<Integer> f = m.supplyAsync(r);
1267	<	checkCompletedWithWrappedCFException(f);
1267	>	checkCompletedWithWrappedException(f, r.ex);
1268		r.assertInvoked();
1269		}}
1270
#	Line 1264 | Line 1275 | public class CompletableFutureTest exten
1275		*/
1276		public void testThenRun_normalCompletion() {
1277		for (ExecutionMode m : ExecutionMode.values())
1267	–	for (boolean createIncomplete : new boolean[] { true, false })
1278		for (Integer v1 : new Integer[] { 1, null })
1279		{
1280		final CompletableFuture<Integer> f = new CompletableFuture<>();
1281	<	final Noop r = new Noop(m);
1282	<	if (!createIncomplete) assertTrue(f.complete(v1));
1273	<	final CompletableFuture<Void> g = m.thenRun(f, r);
1274	<	if (createIncomplete) {
1275	<	checkIncomplete(g);
1276	<	assertTrue(f.complete(v1));
1277	<	}
1281	>	final Noop[] rs = new Noop[6];
1282	>	for (int i = 0; i < rs.length; i++) rs[i] = new Noop(m);
1283
1284	<	checkCompletedNormally(g, null);
1284	>	final CompletableFuture<Void> h0 = m.thenRun(f, rs[0]);
1285	>	final CompletableFuture<Void> h1 = m.runAfterBoth(f, f, rs[1]);
1286	>	final CompletableFuture<Void> h2 = m.runAfterEither(f, f, rs[2]);
1287	>	checkIncomplete(h0);
1288	>	checkIncomplete(h1);
1289	>	checkIncomplete(h2);
1290	>	assertTrue(f.complete(v1));
1291	>	final CompletableFuture<Void> h3 = m.thenRun(f, rs[3]);
1292	>	final CompletableFuture<Void> h4 = m.runAfterBoth(f, f, rs[4]);
1293	>	final CompletableFuture<Void> h5 = m.runAfterEither(f, f, rs[5]);
1294	>
1295	>	checkCompletedNormally(h0, null);
1296	>	checkCompletedNormally(h1, null);
1297	>	checkCompletedNormally(h2, null);
1298	>	checkCompletedNormally(h3, null);
1299	>	checkCompletedNormally(h4, null);
1300	>	checkCompletedNormally(h5, null);
1301		checkCompletedNormally(f, v1);
1302	<	r.assertInvoked();
1302	>	for (Noop r : rs) r.assertInvoked();
1303		}}
1304
1305		/**
#	Line 1287 | Line 1308 | public class CompletableFutureTest exten
1308		*/
1309		public void testThenRun_exceptionalCompletion() {
1310		for (ExecutionMode m : ExecutionMode.values())
1290	–	for (boolean createIncomplete : new boolean[] { true, false })
1311		{
1312		final CFException ex = new CFException();
1313		final CompletableFuture<Integer> f = new CompletableFuture<>();
1314	<	final Noop r = new Noop(m);
1315	<	if (!createIncomplete) f.completeExceptionally(ex);
1296	<	final CompletableFuture<Void> g = m.thenRun(f, r);
1297	<	if (createIncomplete) {
1298	<	checkIncomplete(g);
1299	<	f.completeExceptionally(ex);
1300	<	}
1314	>	final Noop[] rs = new Noop[6];
1315	>	for (int i = 0; i < rs.length; i++) rs[i] = new Noop(m);
1316
1317	<	checkCompletedWithWrappedException(g, ex);
1317	>	final CompletableFuture<Void> h0 = m.thenRun(f, rs[0]);
1318	>	final CompletableFuture<Void> h1 = m.runAfterBoth(f, f, rs[1]);
1319	>	final CompletableFuture<Void> h2 = m.runAfterEither(f, f, rs[2]);
1320	>	checkIncomplete(h0);
1321	>	checkIncomplete(h1);
1322	>	checkIncomplete(h2);
1323	>	assertTrue(f.completeExceptionally(ex));
1324	>	final CompletableFuture<Void> h3 = m.thenRun(f, rs[3]);
1325	>	final CompletableFuture<Void> h4 = m.runAfterBoth(f, f, rs[4]);
1326	>	final CompletableFuture<Void> h5 = m.runAfterEither(f, f, rs[5]);
1327	>
1328	>	checkCompletedWithWrappedException(h0, ex);
1329	>	checkCompletedWithWrappedException(h1, ex);
1330	>	checkCompletedWithWrappedException(h2, ex);
1331	>	checkCompletedWithWrappedException(h3, ex);
1332	>	checkCompletedWithWrappedException(h4, ex);
1333	>	checkCompletedWithWrappedException(h5, ex);
1334		checkCompletedExceptionally(f, ex);
1335	<	r.assertNotInvoked();
1335	>	for (Noop r : rs) r.assertNotInvoked();
1336		}}
1337
1338		/**
#	Line 1309 | Line 1340 | public class CompletableFutureTest exten
1340		*/
1341		public void testThenRun_sourceCancelled() {
1342		for (ExecutionMode m : ExecutionMode.values())
1312	–	for (boolean createIncomplete : new boolean[] { true, false })
1343		for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1344		{
1345		final CompletableFuture<Integer> f = new CompletableFuture<>();
1346	<	final Noop r = new Noop(m);
1347	<	if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
1318	<	final CompletableFuture<Void> g = m.thenRun(f, r);
1319	<	if (createIncomplete) {
1320	<	checkIncomplete(g);
1321	<	assertTrue(f.cancel(mayInterruptIfRunning));
1322	<	}
1346	>	final Noop[] rs = new Noop[6];
1347	>	for (int i = 0; i < rs.length; i++) rs[i] = new Noop(m);
1348
1349	<	checkCompletedWithWrappedCancellationException(g);
1349	>	final CompletableFuture<Void> h0 = m.thenRun(f, rs[0]);
1350	>	final CompletableFuture<Void> h1 = m.runAfterBoth(f, f, rs[1]);
1351	>	final CompletableFuture<Void> h2 = m.runAfterEither(f, f, rs[2]);
1352	>	checkIncomplete(h0);
1353	>	checkIncomplete(h1);
1354	>	checkIncomplete(h2);
1355	>	assertTrue(f.cancel(mayInterruptIfRunning));
1356	>	final CompletableFuture<Void> h3 = m.thenRun(f, rs[3]);
1357	>	final CompletableFuture<Void> h4 = m.runAfterBoth(f, f, rs[4]);
1358	>	final CompletableFuture<Void> h5 = m.runAfterEither(f, f, rs[5]);
1359	>
1360	>	checkCompletedWithWrappedCancellationException(h0);
1361	>	checkCompletedWithWrappedCancellationException(h1);
1362	>	checkCompletedWithWrappedCancellationException(h2);
1363	>	checkCompletedWithWrappedCancellationException(h3);
1364	>	checkCompletedWithWrappedCancellationException(h4);
1365	>	checkCompletedWithWrappedCancellationException(h5);
1366		checkCancelled(f);
1367	<	r.assertNotInvoked();
1367	>	for (Noop r : rs) r.assertNotInvoked();
1368		}}
1369
1370		/**
#	Line 1331 | Line 1372 | public class CompletableFutureTest exten
1372		*/
1373		public void testThenRun_actionFailed() {
1374		for (ExecutionMode m : ExecutionMode.values())
1334	–	for (boolean createIncomplete : new boolean[] { true, false })
1375		for (Integer v1 : new Integer[] { 1, null })
1376		{
1377		final CompletableFuture<Integer> f = new CompletableFuture<>();
1378	<	final FailingRunnable r = new FailingRunnable(m);
1379	<	if (!createIncomplete) assertTrue(f.complete(v1));
1340	<	final CompletableFuture<Void> g = m.thenRun(f, r);
1341	<	if (createIncomplete) {
1342	<	checkIncomplete(g);
1343	<	assertTrue(f.complete(v1));
1344	<	}
1378	>	final FailingRunnable[] rs = new FailingRunnable[6];
1379	>	for (int i = 0; i < rs.length; i++) rs[i] = new FailingRunnable(m);
1380
1381	<	checkCompletedWithWrappedCFException(g);
1381	>	final CompletableFuture<Void> h0 = m.thenRun(f, rs[0]);
1382	>	final CompletableFuture<Void> h1 = m.runAfterBoth(f, f, rs[1]);
1383	>	final CompletableFuture<Void> h2 = m.runAfterEither(f, f, rs[2]);
1384	>	assertTrue(f.complete(v1));
1385	>	final CompletableFuture<Void> h3 = m.thenRun(f, rs[3]);
1386	>	final CompletableFuture<Void> h4 = m.runAfterBoth(f, f, rs[4]);
1387	>	final CompletableFuture<Void> h5 = m.runAfterEither(f, f, rs[5]);
1388	>
1389	>	checkCompletedWithWrappedException(h0, rs[0].ex);
1390	>	checkCompletedWithWrappedException(h1, rs[1].ex);
1391	>	checkCompletedWithWrappedException(h2, rs[2].ex);
1392	>	checkCompletedWithWrappedException(h3, rs[3].ex);
1393	>	checkCompletedWithWrappedException(h4, rs[4].ex);
1394	>	checkCompletedWithWrappedException(h5, rs[5].ex);
1395		checkCompletedNormally(f, v1);
1396		}}
1397
#	Line 1352 | Line 1400 | public class CompletableFutureTest exten
1400		*/
1401		public void testThenApply_normalCompletion() {
1402		for (ExecutionMode m : ExecutionMode.values())
1355	–	for (boolean createIncomplete : new boolean[] { true, false })
1403		for (Integer v1 : new Integer[] { 1, null })
1404		{
1405		final CompletableFuture<Integer> f = new CompletableFuture<>();
1406	<	final IncFunction r = new IncFunction(m);
1407	<	if (!createIncomplete) assertTrue(f.complete(v1));
1361	<	final CompletableFuture<Integer> g = m.thenApply(f, r);
1362	<	if (createIncomplete) {
1363	<	checkIncomplete(g);
1364	<	assertTrue(f.complete(v1));
1365	<	}
1406	>	final IncFunction[] rs = new IncFunction[4];
1407	>	for (int i = 0; i < rs.length; i++) rs[i] = new IncFunction(m);
1408
1409	<	checkCompletedNormally(g, inc(v1));
1409	>	final CompletableFuture<Integer> h0 = m.thenApply(f, rs[0]);
1410	>	final CompletableFuture<Integer> h1 = m.applyToEither(f, f, rs[1]);
1411	>	checkIncomplete(h0);
1412	>	checkIncomplete(h1);
1413	>	assertTrue(f.complete(v1));
1414	>	final CompletableFuture<Integer> h2 = m.thenApply(f, rs[2]);
1415	>	final CompletableFuture<Integer> h3 = m.applyToEither(f, f, rs[3]);
1416	>
1417	>	checkCompletedNormally(h0, inc(v1));
1418	>	checkCompletedNormally(h1, inc(v1));
1419	>	checkCompletedNormally(h2, inc(v1));
1420	>	checkCompletedNormally(h3, inc(v1));
1421		checkCompletedNormally(f, v1);
1422	<	r.assertValue(inc(v1));
1422	>	for (IncFunction r : rs) r.assertValue(inc(v1));
1423		}}
1424
1425		/**
#	Line 1375 | Line 1428 | public class CompletableFutureTest exten
1428		*/
1429		public void testThenApply_exceptionalCompletion() {
1430		for (ExecutionMode m : ExecutionMode.values())
1378	–	for (boolean createIncomplete : new boolean[] { true, false })
1431		{
1432		final CFException ex = new CFException();
1433		final CompletableFuture<Integer> f = new CompletableFuture<>();
1434	<	final IncFunction r = new IncFunction(m);
1435	<	if (!createIncomplete) f.completeExceptionally(ex);
1384	<	final CompletableFuture<Integer> g = m.thenApply(f, r);
1385	<	if (createIncomplete) {
1386	<	checkIncomplete(g);
1387	<	f.completeExceptionally(ex);
1388	<	}
1434	>	final IncFunction[] rs = new IncFunction[4];
1435	>	for (int i = 0; i < rs.length; i++) rs[i] = new IncFunction(m);
1436
1437	<	checkCompletedWithWrappedException(g, ex);
1437	>	final CompletableFuture<Integer> h0 = m.thenApply(f, rs[0]);
1438	>	final CompletableFuture<Integer> h1 = m.applyToEither(f, f, rs[1]);
1439	>	assertTrue(f.completeExceptionally(ex));
1440	>	final CompletableFuture<Integer> h2 = m.thenApply(f, rs[2]);
1441	>	final CompletableFuture<Integer> h3 = m.applyToEither(f, f, rs[3]);
1442	>
1443	>	checkCompletedWithWrappedException(h0, ex);
1444	>	checkCompletedWithWrappedException(h1, ex);
1445	>	checkCompletedWithWrappedException(h2, ex);
1446	>	checkCompletedWithWrappedException(h3, ex);
1447		checkCompletedExceptionally(f, ex);
1448	<	r.assertNotInvoked();
1448	>	for (IncFunction r : rs) r.assertNotInvoked();
1449		}}
1450
1451		/**
#	Line 1397 | Line 1453 | public class CompletableFutureTest exten
1453		*/
1454		public void testThenApply_sourceCancelled() {
1455		for (ExecutionMode m : ExecutionMode.values())
1400	–	for (boolean createIncomplete : new boolean[] { true, false })
1456		for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1457		{
1458		final CompletableFuture<Integer> f = new CompletableFuture<>();
1459	<	final IncFunction r = new IncFunction(m);
1460	<	if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
1406	<	final CompletableFuture<Integer> g = m.thenApply(f, r);
1407	<	if (createIncomplete) {
1408	<	checkIncomplete(g);
1409	<	assertTrue(f.cancel(mayInterruptIfRunning));
1410	<	}
1459	>	final IncFunction[] rs = new IncFunction[4];
1460	>	for (int i = 0; i < rs.length; i++) rs[i] = new IncFunction(m);
1461
1462	<	checkCompletedWithWrappedCancellationException(g);
1462	>	final CompletableFuture<Integer> h0 = m.thenApply(f, rs[0]);
1463	>	final CompletableFuture<Integer> h1 = m.applyToEither(f, f, rs[1]);
1464	>	assertTrue(f.cancel(mayInterruptIfRunning));
1465	>	final CompletableFuture<Integer> h2 = m.thenApply(f, rs[2]);
1466	>	final CompletableFuture<Integer> h3 = m.applyToEither(f, f, rs[3]);
1467	>
1468	>	checkCompletedWithWrappedCancellationException(h0);
1469	>	checkCompletedWithWrappedCancellationException(h1);
1470	>	checkCompletedWithWrappedCancellationException(h2);
1471	>	checkCompletedWithWrappedCancellationException(h3);
1472		checkCancelled(f);
1473	<	r.assertNotInvoked();
1473	>	for (IncFunction r : rs) r.assertNotInvoked();
1474		}}
1475
1476		/**
#	Line 1419 | Line 1478 | public class CompletableFutureTest exten
1478		*/
1479		public void testThenApply_actionFailed() {
1480		for (ExecutionMode m : ExecutionMode.values())
1422	–	for (boolean createIncomplete : new boolean[] { true, false })
1481		for (Integer v1 : new Integer[] { 1, null })
1482		{
1483		final CompletableFuture<Integer> f = new CompletableFuture<>();
1484	<	final FailingFunction r = new FailingFunction(m);
1485	<	if (!createIncomplete) assertTrue(f.complete(v1));
1486	<	final CompletableFuture<Integer> g = m.thenApply(f, r);
1487	<	if (createIncomplete) {
1488	<	checkIncomplete(g);
1489	<	assertTrue(f.complete(v1));
1490	<	}
1484	>	final FailingFunction[] rs = new FailingFunction[4];
1485	>	for (int i = 0; i < rs.length; i++) rs[i] = new FailingFunction(m);
1486	>
1487	>	final CompletableFuture<Integer> h0 = m.thenApply(f, rs[0]);
1488	>	final CompletableFuture<Integer> h1 = m.applyToEither(f, f, rs[1]);
1489	>	assertTrue(f.complete(v1));
1490	>	final CompletableFuture<Integer> h2 = m.thenApply(f, rs[2]);
1491	>	final CompletableFuture<Integer> h3 = m.applyToEither(f, f, rs[3]);
1492
1493	<	checkCompletedWithWrappedCFException(g);
1493	>	checkCompletedWithWrappedException(h0, rs[0].ex);
1494	>	checkCompletedWithWrappedException(h1, rs[1].ex);
1495	>	checkCompletedWithWrappedException(h2, rs[2].ex);
1496	>	checkCompletedWithWrappedException(h3, rs[3].ex);
1497		checkCompletedNormally(f, v1);
1498		}}
1499
#	Line 1440 | Line 1502 | public class CompletableFutureTest exten
1502		*/
1503		public void testThenAccept_normalCompletion() {
1504		for (ExecutionMode m : ExecutionMode.values())
1443	–	for (boolean createIncomplete : new boolean[] { true, false })
1505		for (Integer v1 : new Integer[] { 1, null })
1506		{
1507		final CompletableFuture<Integer> f = new CompletableFuture<>();
1508	<	final NoopConsumer r = new NoopConsumer(m);
1509	<	if (!createIncomplete) assertTrue(f.complete(v1));
1449	<	final CompletableFuture<Void> g = m.thenAccept(f, r);
1450	<	if (createIncomplete) {
1451	<	checkIncomplete(g);
1452	<	assertTrue(f.complete(v1));
1453	<	}
1508	>	final NoopConsumer[] rs = new NoopConsumer[4];
1509	>	for (int i = 0; i < rs.length; i++) rs[i] = new NoopConsumer(m);
1510
1511	<	checkCompletedNormally(g, null);
1512	<	r.assertValue(v1);
1511	>	final CompletableFuture<Void> h0 = m.thenAccept(f, rs[0]);
1512	>	final CompletableFuture<Void> h1 = m.acceptEither(f, f, rs[1]);
1513	>	checkIncomplete(h0);
1514	>	checkIncomplete(h1);
1515	>	assertTrue(f.complete(v1));
1516	>	final CompletableFuture<Void> h2 = m.thenAccept(f, rs[2]);
1517	>	final CompletableFuture<Void> h3 = m.acceptEither(f, f, rs[3]);
1518	>
1519	>	checkCompletedNormally(h0, null);
1520	>	checkCompletedNormally(h1, null);
1521	>	checkCompletedNormally(h2, null);
1522	>	checkCompletedNormally(h3, null);
1523		checkCompletedNormally(f, v1);
1524	+	for (NoopConsumer r : rs) r.assertValue(v1);
1525		}}
1526
1527		/**
#	Line 1463 | Line 1530 | public class CompletableFutureTest exten
1530		*/
1531		public void testThenAccept_exceptionalCompletion() {
1532		for (ExecutionMode m : ExecutionMode.values())
1466	–	for (boolean createIncomplete : new boolean[] { true, false })
1533		{
1534		final CFException ex = new CFException();
1535		final CompletableFuture<Integer> f = new CompletableFuture<>();
1536	<	final NoopConsumer r = new NoopConsumer(m);
1537	<	if (!createIncomplete) f.completeExceptionally(ex);
1472	<	final CompletableFuture<Void> g = m.thenAccept(f, r);
1473	<	if (createIncomplete) {
1474	<	checkIncomplete(g);
1475	<	f.completeExceptionally(ex);
1476	<	}
1536	>	final NoopConsumer[] rs = new NoopConsumer[4];
1537	>	for (int i = 0; i < rs.length; i++) rs[i] = new NoopConsumer(m);
1538
1539	<	checkCompletedWithWrappedException(g, ex);
1539	>	final CompletableFuture<Void> h0 = m.thenAccept(f, rs[0]);
1540	>	final CompletableFuture<Void> h1 = m.acceptEither(f, f, rs[1]);
1541	>	assertTrue(f.completeExceptionally(ex));
1542	>	final CompletableFuture<Void> h2 = m.thenAccept(f, rs[2]);
1543	>	final CompletableFuture<Void> h3 = m.acceptEither(f, f, rs[3]);
1544	>
1545	>	checkCompletedWithWrappedException(h0, ex);
1546	>	checkCompletedWithWrappedException(h1, ex);
1547	>	checkCompletedWithWrappedException(h2, ex);
1548	>	checkCompletedWithWrappedException(h3, ex);
1549		checkCompletedExceptionally(f, ex);
1550	<	r.assertNotInvoked();
1550	>	for (NoopConsumer r : rs) r.assertNotInvoked();
1551		}}
1552
1553		/**
#	Line 1485 | Line 1555 | public class CompletableFutureTest exten
1555		*/
1556		public void testThenAccept_sourceCancelled() {
1557		for (ExecutionMode m : ExecutionMode.values())
1488	–	for (boolean createIncomplete : new boolean[] { true, false })
1558		for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1559		{
1560		final CompletableFuture<Integer> f = new CompletableFuture<>();
1561	<	final NoopConsumer r = new NoopConsumer(m);
1562	<	if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
1494	<	final CompletableFuture<Void> g = m.thenAccept(f, r);
1495	<	if (createIncomplete) {
1496	<	checkIncomplete(g);
1497	<	assertTrue(f.cancel(mayInterruptIfRunning));
1498	<	}
1561	>	final NoopConsumer[] rs = new NoopConsumer[4];
1562	>	for (int i = 0; i < rs.length; i++) rs[i] = new NoopConsumer(m);
1563
1564	<	checkCompletedWithWrappedCancellationException(g);
1564	>	final CompletableFuture<Void> h0 = m.thenAccept(f, rs[0]);
1565	>	final CompletableFuture<Void> h1 = m.acceptEither(f, f, rs[1]);
1566	>	assertTrue(f.cancel(mayInterruptIfRunning));
1567	>	final CompletableFuture<Void> h2 = m.thenAccept(f, rs[2]);
1568	>	final CompletableFuture<Void> h3 = m.acceptEither(f, f, rs[3]);
1569	>
1570	>	checkCompletedWithWrappedCancellationException(h0);
1571	>	checkCompletedWithWrappedCancellationException(h1);
1572	>	checkCompletedWithWrappedCancellationException(h2);
1573	>	checkCompletedWithWrappedCancellationException(h3);
1574		checkCancelled(f);
1575	<	r.assertNotInvoked();
1575	>	for (NoopConsumer r : rs) r.assertNotInvoked();
1576		}}
1577
1578		/**
#	Line 1507 | Line 1580 | public class CompletableFutureTest exten
1580		*/
1581		public void testThenAccept_actionFailed() {
1582		for (ExecutionMode m : ExecutionMode.values())
1510	–	for (boolean createIncomplete : new boolean[] { true, false })
1583		for (Integer v1 : new Integer[] { 1, null })
1584		{
1585		final CompletableFuture<Integer> f = new CompletableFuture<>();
1586	<	final FailingConsumer r = new FailingConsumer(m);
1587	<	if (!createIncomplete) f.complete(v1);
1588	<	final CompletableFuture<Void> g = m.thenAccept(f, r);
1589	<	if (createIncomplete) {
1590	<	checkIncomplete(g);
1591	<	f.complete(v1);
1592	<	}
1586	>	final FailingConsumer[] rs = new FailingConsumer[4];
1587	>	for (int i = 0; i < rs.length; i++) rs[i] = new FailingConsumer(m);
1588	>
1589	>	final CompletableFuture<Void> h0 = m.thenAccept(f, rs[0]);
1590	>	final CompletableFuture<Void> h1 = m.acceptEither(f, f, rs[1]);
1591	>	assertTrue(f.complete(v1));
1592	>	final CompletableFuture<Void> h2 = m.thenAccept(f, rs[2]);
1593	>	final CompletableFuture<Void> h3 = m.acceptEither(f, f, rs[3]);
1594
1595	<	checkCompletedWithWrappedCFException(g);
1595	>	checkCompletedWithWrappedException(h0, rs[0].ex);
1596	>	checkCompletedWithWrappedException(h1, rs[1].ex);
1597	>	checkCompletedWithWrappedException(h2, rs[2].ex);
1598	>	checkCompletedWithWrappedException(h3, rs[3].ex);
1599		checkCompletedNormally(f, v1);
1600		}}
1601
#	Line 1535 | Line 1611 | public class CompletableFutureTest exten
1611		{
1612		final CompletableFuture<Integer> f = new CompletableFuture<>();
1613		final CompletableFuture<Integer> g = new CompletableFuture<>();
1614	<	final SubtractFunction r1 = new SubtractFunction(m);
1615	<	final SubtractFunction r2 = new SubtractFunction(m);
1540	<	final SubtractFunction r3 = new SubtractFunction(m);
1614	>	final SubtractFunction[] rs = new SubtractFunction[6];
1615	>	for (int i = 0; i < rs.length; i++) rs[i] = new SubtractFunction(m);
1616
1617		final CompletableFuture<Integer> fst =  fFirst ? f : g;
1618		final CompletableFuture<Integer> snd = !fFirst ? f : g;
1619		final Integer w1 =  fFirst ? v1 : v2;
1620		final Integer w2 = !fFirst ? v1 : v2;
1621
1622	<	final CompletableFuture<Integer> h1 = m.thenCombine(f, g, r1);
1622	>	final CompletableFuture<Integer> h0 = m.thenCombine(f, g, rs[0]);
1623	>	final CompletableFuture<Integer> h1 = m.thenCombine(fst, fst, rs[1]);
1624		assertTrue(fst.complete(w1));
1625	<	final CompletableFuture<Integer> h2 = m.thenCombine(f, g, r2);
1626	<	checkIncomplete(h1);
1627	<	checkIncomplete(h2);
1628	<	r1.assertNotInvoked();
1629	<	r2.assertNotInvoked();
1625	>	final CompletableFuture<Integer> h2 = m.thenCombine(f, g, rs[2]);
1626	>	final CompletableFuture<Integer> h3 = m.thenCombine(fst, fst, rs[3]);
1627	>	checkIncomplete(h0); rs[0].assertNotInvoked();
1628	>	checkIncomplete(h2); rs[2].assertNotInvoked();
1629	>	checkCompletedNormally(h1, subtract(w1, w1));
1630	>	checkCompletedNormally(h3, subtract(w1, w1));
1631	>	rs[1].assertValue(subtract(w1, w1));
1632	>	rs[3].assertValue(subtract(w1, w1));
1633		assertTrue(snd.complete(w2));
1634	<	final CompletableFuture<Integer> h3 = m.thenCombine(f, g, r3);
1634	>	final CompletableFuture<Integer> h4 = m.thenCombine(f, g, rs[4]);
1635
1636	<	checkCompletedNormally(h1, subtract(v1, v2));
1636	>	checkCompletedNormally(h0, subtract(v1, v2));
1637		checkCompletedNormally(h2, subtract(v1, v2));
1638	<	checkCompletedNormally(h3, subtract(v1, v2));
1639	<	r1.assertValue(subtract(v1, v2));
1640	<	r2.assertValue(subtract(v1, v2));
1641	<	r3.assertValue(subtract(v1, v2));
1638	>	checkCompletedNormally(h4, subtract(v1, v2));
1639	>	rs[0].assertValue(subtract(v1, v2));
1640	>	rs[2].assertValue(subtract(v1, v2));
1641	>	rs[4].assertValue(subtract(v1, v2));
1642	>
1643		checkCompletedNormally(f, v1);
1644		checkCompletedNormally(g, v2);
1645		}}
#	Line 1677 | Line 1757 | public class CompletableFutureTest exten
1757		assertTrue(snd.complete(w2));
1758		final CompletableFuture<Integer> h3 = m.thenCombine(f, g, r3);
1759
1760	<	checkCompletedWithWrappedCFException(h1);
1761	<	checkCompletedWithWrappedCFException(h2);
1762	<	checkCompletedWithWrappedCFException(h3);
1760	>	checkCompletedWithWrappedException(h1, r1.ex);
1761	>	checkCompletedWithWrappedException(h2, r2.ex);
1762	>	checkCompletedWithWrappedException(h3, r3.ex);
1763	>	r1.assertInvoked();
1764	>	r2.assertInvoked();
1765	>	r3.assertInvoked();
1766		checkCompletedNormally(f, v1);
1767		checkCompletedNormally(g, v2);
1768		}}
#	Line 1838 | Line 1921 | public class CompletableFutureTest exten
1921		assertTrue(snd.complete(w2));
1922		final CompletableFuture<Void> h3 = m.thenAcceptBoth(f, g, r3);
1923
1924	<	checkCompletedWithWrappedCFException(h1);
1925	<	checkCompletedWithWrappedCFException(h2);
1926	<	checkCompletedWithWrappedCFException(h3);
1924	>	checkCompletedWithWrappedException(h1, r1.ex);
1925	>	checkCompletedWithWrappedException(h2, r2.ex);
1926	>	checkCompletedWithWrappedException(h3, r3.ex);
1927	>	r1.assertInvoked();
1928	>	r2.assertInvoked();
1929	>	r3.assertInvoked();
1930		checkCompletedNormally(f, v1);
1931		checkCompletedNormally(g, v2);
1932		}}
#	Line 1851 | Line 1937 | public class CompletableFutureTest exten
1937		*/
1938		public void testRunAfterBoth_normalCompletion() {
1939		for (ExecutionMode m : ExecutionMode.values())
1854	–	for (boolean createIncomplete : new boolean[] { true, false })
1940		for (boolean fFirst : new boolean[] { true, false })
1941		for (Integer v1 : new Integer[] { 1, null })
1942		for (Integer v2 : new Integer[] { 2, null })
1943		{
1944		final CompletableFuture<Integer> f = new CompletableFuture<>();
1945		final CompletableFuture<Integer> g = new CompletableFuture<>();
1946	<	final Noop r = new Noop(m);
1946	>	final Noop r1 = new Noop(m);
1947	>	final Noop r2 = new Noop(m);
1948	>	final Noop r3 = new Noop(m);
1949
1950	<	assertTrue(fFirst ? f.complete(v1) : g.complete(v2));
1951	<	if (!createIncomplete)
1952	<	assertTrue(!fFirst ? f.complete(v1) : g.complete(v2));
1953	<	final CompletableFuture<Void> h = m.runAfterBoth(f, g, r);
1867	<	if (createIncomplete) {
1868	<	checkIncomplete(h);
1869	<	r.assertNotInvoked();
1870	<	assertTrue(!fFirst ? f.complete(v1) : g.complete(v2));
1871	<	}
1950	>	final CompletableFuture<Integer> fst =  fFirst ? f : g;
1951	>	final CompletableFuture<Integer> snd = !fFirst ? f : g;
1952	>	final Integer w1 =  fFirst ? v1 : v2;
1953	>	final Integer w2 = !fFirst ? v1 : v2;
1954
1955	<	checkCompletedNormally(h, null);
1956	<	r.assertInvoked();
1955	>	final CompletableFuture<Void> h1 = m.runAfterBoth(f, g, r1);
1956	>	assertTrue(fst.complete(w1));
1957	>	final CompletableFuture<Void> h2 = m.runAfterBoth(f, g, r2);
1958	>	checkIncomplete(h1);
1959	>	checkIncomplete(h2);
1960	>	r1.assertNotInvoked();
1961	>	r2.assertNotInvoked();
1962	>	assertTrue(snd.complete(w2));
1963	>	final CompletableFuture<Void> h3 = m.runAfterBoth(f, g, r3);
1964	>
1965	>	checkCompletedNormally(h1, null);
1966	>	checkCompletedNormally(h2, null);
1967	>	checkCompletedNormally(h3, null);
1968	>	r1.assertInvoked();
1969	>	r2.assertInvoked();
1970	>	r3.assertInvoked();
1971		checkCompletedNormally(f, v1);
1972		checkCompletedNormally(g, v2);
1973		}}
#	Line 1880 | Line 1976 | public class CompletableFutureTest exten
1976		* runAfterBoth result completes exceptionally after exceptional
1977		* completion of either source
1978		*/
1979	<	public void testRunAfterBoth_exceptionalCompletion() {
1979	>	public void testRunAfterBoth_exceptionalCompletion() throws Throwable {
1980		for (ExecutionMode m : ExecutionMode.values())
1885	–	for (boolean createIncomplete : new boolean[] { true, false })
1981		for (boolean fFirst : new boolean[] { true, false })
1982	+	for (boolean failFirst : new boolean[] { true, false })
1983		for (Integer v1 : new Integer[] { 1, null })
1984		{
1985		final CompletableFuture<Integer> f = new CompletableFuture<>();
1986		final CompletableFuture<Integer> g = new CompletableFuture<>();
1987		final CFException ex = new CFException();
1988	<	final Noop r = new Noop(m);
1988	>	final Noop r1 = new Noop(m);
1989	>	final Noop r2 = new Noop(m);
1990	>	final Noop r3 = new Noop(m);
1991
1992	<	assertTrue((fFirst ? f : g).complete(v1));
1993	<	if (!createIncomplete)
1994	<	assertTrue((!fFirst ? f : g).completeExceptionally(ex));
1995	<	final CompletableFuture<Void> h = m.runAfterBoth(f, g, r);
1996	<	if (createIncomplete) {
1997	<	checkIncomplete(h);
1998	<	assertTrue((!fFirst ? f : g).completeExceptionally(ex));
1999	<	}
1992	>	final CompletableFuture<Integer> fst =  fFirst ? f : g;
1993	>	final CompletableFuture<Integer> snd = !fFirst ? f : g;
1994	>	final Callable<Boolean> complete1 = failFirst ?
1995	>	() -> fst.completeExceptionally(ex) :
1996	>	() -> fst.complete(v1);
1997	>	final Callable<Boolean> complete2 = failFirst ?
1998	>	() -> snd.complete(v1) :
1999	>	() -> snd.completeExceptionally(ex);
2000
2001	<	checkCompletedWithWrappedException(h, ex);
2002	<	r.assertNotInvoked();
2003	<	checkCompletedNormally(fFirst ? f : g, v1);
2004	<	checkCompletedExceptionally(!fFirst ? f : g, ex);
2001	>	final CompletableFuture<Void> h1 = m.runAfterBoth(f, g, r1);
2002	>	assertTrue(complete1.call());
2003	>	final CompletableFuture<Void> h2 = m.runAfterBoth(f, g, r2);
2004	>	checkIncomplete(h1);
2005	>	checkIncomplete(h2);
2006	>	assertTrue(complete2.call());
2007	>	final CompletableFuture<Void> h3 = m.runAfterBoth(f, g, r3);
2008	>
2009	>	checkCompletedWithWrappedException(h1, ex);
2010	>	checkCompletedWithWrappedException(h2, ex);
2011	>	checkCompletedWithWrappedException(h3, ex);
2012	>	r1.assertNotInvoked();
2013	>	r2.assertNotInvoked();
2014	>	r3.assertNotInvoked();
2015	>	checkCompletedNormally(failFirst ? snd : fst, v1);
2016	>	checkCompletedExceptionally(failFirst ? fst : snd, ex);
2017		}}
2018
2019		/**
2020		* runAfterBoth result completes exceptionally if either source cancelled
2021		*/
2022	<	public void testRunAfterBoth_sourceCancelled() {
2022	>	public void testRunAfterBoth_sourceCancelled() throws Throwable {
2023		for (ExecutionMode m : ExecutionMode.values())
2024		for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1915	–	for (boolean createIncomplete : new boolean[] { true, false })
2025		for (boolean fFirst : new boolean[] { true, false })
2026	+	for (boolean failFirst : new boolean[] { true, false })
2027		for (Integer v1 : new Integer[] { 1, null })
2028		{
2029		final CompletableFuture<Integer> f = new CompletableFuture<>();
2030		final CompletableFuture<Integer> g = new CompletableFuture<>();
2031	<	final Noop r = new Noop(m);
2031	>	final Noop r1 = new Noop(m);
2032	>	final Noop r2 = new Noop(m);
2033	>	final Noop r3 = new Noop(m);
2034
2035	<	assertTrue((fFirst ? f : g).complete(v1));
2036	<	if (!createIncomplete)
2037	<	assertTrue((!fFirst ? f : g).cancel(mayInterruptIfRunning));
2038	<	final CompletableFuture<Void> h = m.runAfterBoth(f, g, r);
2039	<	if (createIncomplete) {
2040	<	checkIncomplete(h);
2041	<	assertTrue((!fFirst ? f : g).cancel(mayInterruptIfRunning));
2042	<	}
2035	>	final CompletableFuture<Integer> fst =  fFirst ? f : g;
2036	>	final CompletableFuture<Integer> snd = !fFirst ? f : g;
2037	>	final Callable<Boolean> complete1 = failFirst ?
2038	>	() -> fst.cancel(mayInterruptIfRunning) :
2039	>	() -> fst.complete(v1);
2040	>	final Callable<Boolean> complete2 = failFirst ?
2041	>	() -> snd.complete(v1) :
2042	>	() -> snd.cancel(mayInterruptIfRunning);
2043
2044	<	checkCompletedWithWrappedCancellationException(h);
2045	<	checkCancelled(!fFirst ? f : g);
2046	<	r.assertNotInvoked();
2047	<	checkCompletedNormally(fFirst ? f : g, v1);
2044	>	final CompletableFuture<Void> h1 = m.runAfterBoth(f, g, r1);
2045	>	assertTrue(complete1.call());
2046	>	final CompletableFuture<Void> h2 = m.runAfterBoth(f, g, r2);
2047	>	checkIncomplete(h1);
2048	>	checkIncomplete(h2);
2049	>	assertTrue(complete2.call());
2050	>	final CompletableFuture<Void> h3 = m.runAfterBoth(f, g, r3);
2051	>
2052	>	checkCompletedWithWrappedCancellationException(h1);
2053	>	checkCompletedWithWrappedCancellationException(h2);
2054	>	checkCompletedWithWrappedCancellationException(h3);
2055	>	r1.assertNotInvoked();
2056	>	r2.assertNotInvoked();
2057	>	r3.assertNotInvoked();
2058	>	checkCompletedNormally(failFirst ? snd : fst, v1);
2059	>	checkCancelled(failFirst ? fst : snd);
2060		}}
2061
2062		/**
#	Line 1948 | Line 2072 | public class CompletableFutureTest exten
2072		final CompletableFuture<Integer> g = new CompletableFuture<>();
2073		final FailingRunnable r1 = new FailingRunnable(m);
2074		final FailingRunnable r2 = new FailingRunnable(m);
2075	+	final FailingRunnable r3 = new FailingRunnable(m);
2076
2077	<	CompletableFuture<Void> h1 = m.runAfterBoth(f, g, r1);
2078	<	assertTrue(fFirst ? f.complete(v1) : g.complete(v2));
2079	<	assertTrue(!fFirst ? f.complete(v1) : g.complete(v2));
2080	<	CompletableFuture<Void> h2 = m.runAfterBoth(f, g, r2);
2077	>	final CompletableFuture<Integer> fst =  fFirst ? f : g;
2078	>	final CompletableFuture<Integer> snd = !fFirst ? f : g;
2079	>	final Integer w1 =  fFirst ? v1 : v2;
2080	>	final Integer w2 = !fFirst ? v1 : v2;
2081
2082	<	checkCompletedWithWrappedCFException(h1);
2083	<	checkCompletedWithWrappedCFException(h2);
2082	>	final CompletableFuture<Void> h1 = m.runAfterBoth(f, g, r1);
2083	>	assertTrue(fst.complete(w1));
2084	>	final CompletableFuture<Void> h2 = m.runAfterBoth(f, g, r2);
2085	>	assertTrue(snd.complete(w2));
2086	>	final CompletableFuture<Void> h3 = m.runAfterBoth(f, g, r3);
2087	>
2088	>	checkCompletedWithWrappedException(h1, r1.ex);
2089	>	checkCompletedWithWrappedException(h2, r2.ex);
2090	>	checkCompletedWithWrappedException(h3, r3.ex);
2091	>	r1.assertInvoked();
2092	>	r2.assertInvoked();
2093	>	r3.assertInvoked();
2094		checkCompletedNormally(f, v1);
2095		checkCompletedNormally(g, v2);
2096		}}
#	Line 2242 | Line 2377 | public class CompletableFutureTest exten
2377		f.complete(v1);
2378		final CompletableFuture<Integer> h2 = m.applyToEither(f, g, rs[2]);
2379		final CompletableFuture<Integer> h3 = m.applyToEither(g, f, rs[3]);
2380	<	checkCompletedWithWrappedCFException(h0);
2381	<	checkCompletedWithWrappedCFException(h1);
2382	<	checkCompletedWithWrappedCFException(h2);
2383	<	checkCompletedWithWrappedCFException(h3);
2380	>	checkCompletedWithWrappedException(h0, rs[0].ex);
2381	>	checkCompletedWithWrappedException(h1, rs[1].ex);
2382	>	checkCompletedWithWrappedException(h2, rs[2].ex);
2383	>	checkCompletedWithWrappedException(h3, rs[3].ex);
2384		for (int i = 0; i < 4; i++) rs[i].assertValue(v1);
2385
2386		g.complete(v2);
#	Line 2254 | Line 2389 | public class CompletableFutureTest exten
2389		final CompletableFuture<Integer> h4 = m.applyToEither(f, g, rs[4]);
2390		final CompletableFuture<Integer> h5 = m.applyToEither(g, f, rs[5]);
2391
2392	<	checkCompletedWithWrappedCFException(h4);
2392	>	checkCompletedWithWrappedException(h4, rs[4].ex);
2393		assertTrue(Objects.equals(v1, rs[4].value) ||
2394		Objects.equals(v2, rs[4].value));
2395	<	checkCompletedWithWrappedCFException(h5);
2395	>	checkCompletedWithWrappedException(h5, rs[5].ex);
2396		assertTrue(Objects.equals(v1, rs[5].value) ||
2397		Objects.equals(v2, rs[5].value));
2398
#	Line 2501 | Line 2636 | public class CompletableFutureTest exten
2636		f.complete(v1);
2637		final CompletableFuture<Void> h2 = m.acceptEither(f, g, rs[2]);
2638		final CompletableFuture<Void> h3 = m.acceptEither(g, f, rs[3]);
2639	<	checkCompletedWithWrappedCFException(h0);
2640	<	checkCompletedWithWrappedCFException(h1);
2641	<	checkCompletedWithWrappedCFException(h2);
2642	<	checkCompletedWithWrappedCFException(h3);
2639	>	checkCompletedWithWrappedException(h0, rs[0].ex);
2640	>	checkCompletedWithWrappedException(h1, rs[1].ex);
2641	>	checkCompletedWithWrappedException(h2, rs[2].ex);
2642	>	checkCompletedWithWrappedException(h3, rs[3].ex);
2643		for (int i = 0; i < 4; i++) rs[i].assertValue(v1);
2644
2645		g.complete(v2);
#	Line 2513 | Line 2648 | public class CompletableFutureTest exten
2648		final CompletableFuture<Void> h4 = m.acceptEither(f, g, rs[4]);
2649		final CompletableFuture<Void> h5 = m.acceptEither(g, f, rs[5]);
2650
2651	<	checkCompletedWithWrappedCFException(h4);
2651	>	checkCompletedWithWrappedException(h4, rs[4].ex);
2652		assertTrue(Objects.equals(v1, rs[4].value) ||
2653		Objects.equals(v2, rs[4].value));
2654	<	checkCompletedWithWrappedCFException(h5);
2654	>	checkCompletedWithWrappedException(h5, rs[5].ex);
2655		assertTrue(Objects.equals(v1, rs[5].value) ||
2656		Objects.equals(v2, rs[5].value));
2657
#	Line 2756 | Line 2891 | public class CompletableFutureTest exten
2891		assertTrue(f.complete(v1));
2892		final CompletableFuture<Void> h2 = m.runAfterEither(f, g, rs[2]);
2893		final CompletableFuture<Void> h3 = m.runAfterEither(g, f, rs[3]);
2894	<	checkCompletedWithWrappedCFException(h0);
2895	<	checkCompletedWithWrappedCFException(h1);
2896	<	checkCompletedWithWrappedCFException(h2);
2897	<	checkCompletedWithWrappedCFException(h3);
2894	>	checkCompletedWithWrappedException(h0, rs[0].ex);
2895	>	checkCompletedWithWrappedException(h1, rs[1].ex);
2896	>	checkCompletedWithWrappedException(h2, rs[2].ex);
2897	>	checkCompletedWithWrappedException(h3, rs[3].ex);
2898		for (int i = 0; i < 4; i++) rs[i].assertInvoked();
2899		assertTrue(g.complete(v2));
2900		final CompletableFuture<Void> h4 = m.runAfterEither(f, g, rs[4]);
2901		final CompletableFuture<Void> h5 = m.runAfterEither(g, f, rs[5]);
2902	<	checkCompletedWithWrappedCFException(h4);
2903	<	checkCompletedWithWrappedCFException(h5);
2902	>	checkCompletedWithWrappedException(h4, rs[4].ex);
2903	>	checkCompletedWithWrappedException(h5, rs[5].ex);
2904
2905		checkCompletedNormally(f, v1);
2906		checkCompletedNormally(g, v2);
#	Line 2826 | Line 2961 | public class CompletableFutureTest exten
2961		final CompletableFuture<Integer> g = m.thenCompose(f, r);
2962		if (createIncomplete) assertTrue(f.complete(v1));
2963
2964	<	checkCompletedWithWrappedCFException(g);
2964	>	checkCompletedWithWrappedException(g, r.ex);
2965		checkCompletedNormally(f, v1);
2966		}}
2967
#	Line 2851 | Line 2986 | public class CompletableFutureTest exten
2986		checkCancelled(f);
2987		}}
2988
2989	+	/**
2990	+	* thenCompose result completes exceptionally if the result of the action does
2991	+	*/
2992	+	public void testThenCompose_actionReturnsFailingFuture() {
2993	+	for (ExecutionMode m : ExecutionMode.values())
2994	+	for (int order = 0; order < 6; order++)
2995	+	for (Integer v1 : new Integer[] { 1, null })
2996	+	{
2997	+	final CFException ex = new CFException();
2998	+	final CompletableFuture<Integer> f = new CompletableFuture<>();
2999	+	final CompletableFuture<Integer> g = new CompletableFuture<>();
3000	+	final CompletableFuture<Integer> h;
3001	+	// Test all permutations of orders
3002	+	switch (order) {
3003	+	case 0:
3004	+	assertTrue(f.complete(v1));
3005	+	assertTrue(g.completeExceptionally(ex));
3006	+	h = m.thenCompose(f, (x -> g));
3007	+	break;
3008	+	case 1:
3009	+	assertTrue(f.complete(v1));
3010	+	h = m.thenCompose(f, (x -> g));
3011	+	assertTrue(g.completeExceptionally(ex));
3012	+	break;
3013	+	case 2:
3014	+	assertTrue(g.completeExceptionally(ex));
3015	+	assertTrue(f.complete(v1));
3016	+	h = m.thenCompose(f, (x -> g));
3017	+	break;
3018	+	case 3:
3019	+	assertTrue(g.completeExceptionally(ex));
3020	+	h = m.thenCompose(f, (x -> g));
3021	+	assertTrue(f.complete(v1));
3022	+	break;
3023	+	case 4:
3024	+	h = m.thenCompose(f, (x -> g));
3025	+	assertTrue(f.complete(v1));
3026	+	assertTrue(g.completeExceptionally(ex));
3027	+	break;
3028	+	case 5:
3029	+	h = m.thenCompose(f, (x -> g));
3030	+	assertTrue(f.complete(v1));
3031	+	assertTrue(g.completeExceptionally(ex));
3032	+	break;
3033	+	default: throw new AssertionError();
3034	+	}
3035	+
3036	+	checkCompletedExceptionally(g, ex);
3037	+	checkCompletedWithWrappedException(h, ex);
3038	+	checkCompletedNormally(f, v1);
3039	+	}}
3040	+
3041		// other static methods
3042
3043		/**
#	Line 2867 | Line 3054 | public class CompletableFutureTest exten
3054		* when all components complete normally
3055		*/
3056		public void testAllOf_normal() throws Exception {
3057	<	for (int k = 1; k < 20; ++k) {
3057	>	for (int k = 1; k < 10; k++) {
3058		CompletableFuture<Integer>[] fs
3059		= (CompletableFuture<Integer>[]) new CompletableFuture[k];
3060	<	for (int i = 0; i < k; ++i)
3060	>	for (int i = 0; i < k; i++)
3061		fs[i] = new CompletableFuture<>();
3062		CompletableFuture<Void> f = CompletableFuture.allOf(fs);
3063	<	for (int i = 0; i < k; ++i) {
3063	>	for (int i = 0; i < k; i++) {
3064		checkIncomplete(f);
3065		checkIncomplete(CompletableFuture.allOf(fs));
3066		fs[i].complete(one);
#	Line 2883 | Line 3070 | public class CompletableFutureTest exten
3070		}
3071		}
3072
3073	<	public void testAllOf_backwards() throws Exception {
3074	<	for (int k = 1; k < 20; ++k) {
3073	>	public void testAllOf_normal_backwards() throws Exception {
3074	>	for (int k = 1; k < 10; k++) {
3075		CompletableFuture<Integer>[] fs
3076		= (CompletableFuture<Integer>[]) new CompletableFuture[k];
3077	<	for (int i = 0; i < k; ++i)
3077	>	for (int i = 0; i < k; i++)
3078		fs[i] = new CompletableFuture<>();
3079		CompletableFuture<Void> f = CompletableFuture.allOf(fs);
3080		for (int i = k - 1; i >= 0; i--) {
#	Line 2900 | Line 3087 | public class CompletableFutureTest exten
3087		}
3088		}
3089
3090	+	public void testAllOf_exceptional() throws Exception {
3091	+	for (int k = 1; k < 10; k++) {
3092	+	CompletableFuture<Integer>[] fs
3093	+	= (CompletableFuture<Integer>[]) new CompletableFuture[k];
3094	+	CFException ex = new CFException();
3095	+	for (int i = 0; i < k; i++)
3096	+	fs[i] = new CompletableFuture<>();
3097	+	CompletableFuture<Void> f = CompletableFuture.allOf(fs);
3098	+	for (int i = 0; i < k; i++) {
3099	+	checkIncomplete(f);
3100	+	checkIncomplete(CompletableFuture.allOf(fs));
3101	+	if (i != k / 2) {
3102	+	fs[i].complete(i);
3103	+	checkCompletedNormally(fs[i], i);
3104	+	} else {
3105	+	fs[i].completeExceptionally(ex);
3106	+	checkCompletedExceptionally(fs[i], ex);
3107	+	}
3108	+	}
3109	+	checkCompletedWithWrappedException(f, ex);
3110	+	checkCompletedWithWrappedException(CompletableFuture.allOf(fs), ex);
3111	+	}
3112	+	}
3113	+
3114		/**
3115		* anyOf(no component futures) returns an incomplete future
3116		*/
3117		public void testAnyOf_empty() throws Exception {
3118	+	for (Integer v1 : new Integer[] { 1, null })
3119	+	{
3120		CompletableFuture<Object> f = CompletableFuture.anyOf();
3121		checkIncomplete(f);
3122	<	}
3122	>
3123	>	f.complete(v1);
3124	>	checkCompletedNormally(f, v1);
3125	>	}}
3126
3127		/**
3128		* anyOf returns a future completed normally with a value when
3129		* a component future does
3130		*/
3131		public void testAnyOf_normal() throws Exception {
3132	<	for (int k = 0; k < 10; ++k) {
3132	>	for (int k = 0; k < 10; k++) {
3133		CompletableFuture[] fs = new CompletableFuture[k];
3134	<	for (int i = 0; i < k; ++i)
3134	>	for (int i = 0; i < k; i++)
3135		fs[i] = new CompletableFuture<>();
3136		CompletableFuture<Object> f = CompletableFuture.anyOf(fs);
3137		checkIncomplete(f);
3138	<	for (int i = 0; i < k; ++i) {
3139	<	fs[i].complete(one);
3140	<	checkCompletedNormally(f, one);
3141	<	checkCompletedNormally(CompletableFuture.anyOf(fs), one);
3138	>	for (int i = 0; i < k; i++) {
3139	>	fs[i].complete(i);
3140	>	checkCompletedNormally(f, 0);
3141	>	int x = (int) CompletableFuture.anyOf(fs).join();
3142	>	assertTrue(0 <= x && x <= i);
3143	>	}
3144	>	}
3145	>	}
3146	>	public void testAnyOf_normal_backwards() throws Exception {
3147	>	for (int k = 0; k < 10; k++) {
3148	>	CompletableFuture[] fs = new CompletableFuture[k];
3149	>	for (int i = 0; i < k; i++)
3150	>	fs[i] = new CompletableFuture<>();
3151	>	CompletableFuture<Object> f = CompletableFuture.anyOf(fs);
3152	>	checkIncomplete(f);
3153	>	for (int i = k - 1; i >= 0; i--) {
3154	>	fs[i].complete(i);
3155	>	checkCompletedNormally(f, k - 1);
3156	>	int x = (int) CompletableFuture.anyOf(fs).join();
3157	>	assertTrue(i <= x && x <= k - 1);
3158		}
3159		}
3160		}
#	Line 2931 | Line 3163 | public class CompletableFutureTest exten
3163		* anyOf result completes exceptionally when any component does.
3164		*/
3165		public void testAnyOf_exceptional() throws Exception {
3166	<	for (int k = 0; k < 10; ++k) {
3166	>	for (int k = 0; k < 10; k++) {
3167	>	CompletableFuture[] fs = new CompletableFuture[k];
3168	>	CFException[] exs = new CFException[k];
3169	>	for (int i = 0; i < k; i++) {
3170	>	fs[i] = new CompletableFuture<>();
3171	>	exs[i] = new CFException();
3172	>	}
3173	>	CompletableFuture<Object> f = CompletableFuture.anyOf(fs);
3174	>	checkIncomplete(f);
3175	>	for (int i = 0; i < k; i++) {
3176	>	fs[i].completeExceptionally(exs[i]);
3177	>	checkCompletedWithWrappedException(f, exs[0]);
3178	>	checkCompletedWithWrappedCFException(CompletableFuture.anyOf(fs));
3179	>	}
3180	>	}
3181	>	}
3182	>
3183	>	public void testAnyOf_exceptional_backwards() throws Exception {
3184	>	for (int k = 0; k < 10; k++) {
3185		CompletableFuture[] fs = new CompletableFuture[k];
3186	<	for (int i = 0; i < k; ++i)
3186	>	CFException[] exs = new CFException[k];
3187	>	for (int i = 0; i < k; i++) {
3188		fs[i] = new CompletableFuture<>();
3189	+	exs[i] = new CFException();
3190	+	}
3191		CompletableFuture<Object> f = CompletableFuture.anyOf(fs);
3192		checkIncomplete(f);
3193	<	for (int i = 0; i < k; ++i) {
3194	<	fs[i].completeExceptionally(new CFException());
3195	<	checkCompletedWithWrappedCFException(f);
3193	>	for (int i = k - 1; i >= 0; i--) {
3194	>	fs[i].completeExceptionally(exs[i]);
3195	>	checkCompletedWithWrappedException(f, exs[k - 1]);
3196		checkCompletedWithWrappedCFException(CompletableFuture.anyOf(fs));
3197		}
3198		}
#	Line 2952 | Line 3205 | public class CompletableFutureTest exten
3205		CompletableFuture<Integer> f = new CompletableFuture<>();
3206		CompletableFuture<Integer> g = new CompletableFuture<>();
3207		CompletableFuture<Integer> nullFuture = (CompletableFuture<Integer>)null;
2955	–	CompletableFuture<?> h;
3208		ThreadExecutor exec = new ThreadExecutor();
3209
3210		Runnable[] throwingActions = {
3211		() -> CompletableFuture.supplyAsync(null),
3212		() -> CompletableFuture.supplyAsync(null, exec),
3213	<	() -> CompletableFuture.supplyAsync(new IntegerSupplier(ExecutionMode.DEFAULT, 42), null),
3213	>	() -> CompletableFuture.supplyAsync(new IntegerSupplier(ExecutionMode.SYNC, 42), null),
3214
3215		() -> CompletableFuture.runAsync(null),
3216		() -> CompletableFuture.runAsync(null, exec),
#	Line 3049 | Line 3301 | public class CompletableFutureTest exten
3301		() -> CompletableFuture.anyOf(null, f),
3302
3303		() -> f.obtrudeException(null),
3304	+
3305	+	() -> CompletableFuture.delayedExecutor(1L, SECONDS, null),
3306	+	() -> CompletableFuture.delayedExecutor(1L, null, exec),
3307	+	() -> CompletableFuture.delayedExecutor(1L, null),
3308	+
3309	+	() -> f.orTimeout(1L, null),
3310	+	() -> f.completeOnTimeout(42, 1L, null),
3311	+
3312	+	() -> CompletableFuture.failedFuture(null),
3313	+	() -> CompletableFuture.failedStage(null),
3314		};
3315
3316		assertThrows(NullPointerException.class, throwingActions);
#	Line 3056 | Line 3318 | public class CompletableFutureTest exten
3318		}
3319
3320		/**
3321	+	* Test submissions to an executor that rejects all tasks.
3322	+	*/
3323	+	public void testRejectingExecutor() {
3324	+	final RejectedExecutionException ex = new RejectedExecutionException();
3325	+	final Executor e = (Runnable r) -> { throw ex; };
3326	+
3327	+	for (Integer v : new Integer[] { 1, null }) {
3328	+
3329	+	final CompletableFuture<Integer> complete = CompletableFuture.completedFuture(v);
3330	+	final CompletableFuture<Integer> incomplete = new CompletableFuture<>();
3331	+
3332	+	List<CompletableFuture<?>> futures = new ArrayList<>();
3333	+
3334	+	List<CompletableFuture<Integer>> srcs = new ArrayList<>();
3335	+	srcs.add(complete);
3336	+	srcs.add(incomplete);
3337	+
3338	+	for (CompletableFuture<Integer> src : srcs) {
3339	+	List<CompletableFuture<?>> fs = new ArrayList<>();
3340	+	fs.add(src.thenRunAsync(() -> {}, e));
3341	+	fs.add(src.thenAcceptAsync((z) -> {}, e));
3342	+	fs.add(src.thenApplyAsync((z) -> z, e));
3343	+
3344	+	fs.add(src.thenCombineAsync(src, (x, y) -> x, e));
3345	+	fs.add(src.thenAcceptBothAsync(src, (x, y) -> {}, e));
3346	+	fs.add(src.runAfterBothAsync(src, () -> {}, e));
3347	+
3348	+	fs.add(src.applyToEitherAsync(src, (z) -> z, e));
3349	+	fs.add(src.acceptEitherAsync(src, (z) -> {}, e));
3350	+	fs.add(src.runAfterEitherAsync(src, () -> {}, e));
3351	+
3352	+	fs.add(src.thenComposeAsync((z) -> null, e));
3353	+	fs.add(src.whenCompleteAsync((z, t) -> {}, e));
3354	+	fs.add(src.handleAsync((z, t) -> null, e));
3355	+
3356	+	for (CompletableFuture<?> future : fs) {
3357	+	if (src.isDone())
3358	+	checkCompletedWithWrappedException(future, ex);
3359	+	else
3360	+	checkIncomplete(future);
3361	+	}
3362	+	futures.addAll(fs);
3363	+	}
3364	+
3365	+	{
3366	+	List<CompletableFuture<?>> fs = new ArrayList<>();
3367	+
3368	+	fs.add(complete.thenCombineAsync(incomplete, (x, y) -> x, e));
3369	+	fs.add(incomplete.thenCombineAsync(complete, (x, y) -> x, e));
3370	+
3371	+	fs.add(complete.thenAcceptBothAsync(incomplete, (x, y) -> {}, e));
3372	+	fs.add(incomplete.thenAcceptBothAsync(complete, (x, y) -> {}, e));
3373	+
3374	+	fs.add(complete.runAfterBothAsync(incomplete, () -> {}, e));
3375	+	fs.add(incomplete.runAfterBothAsync(complete, () -> {}, e));
3376	+
3377	+	for (CompletableFuture<?> future : fs)
3378	+	checkIncomplete(future);
3379	+	futures.addAll(fs);
3380	+	}
3381	+
3382	+	{
3383	+	List<CompletableFuture<?>> fs = new ArrayList<>();
3384	+
3385	+	fs.add(complete.applyToEitherAsync(incomplete, (z) -> z, e));
3386	+	fs.add(incomplete.applyToEitherAsync(complete, (z) -> z, e));
3387	+
3388	+	fs.add(complete.acceptEitherAsync(incomplete, (z) -> {}, e));
3389	+	fs.add(incomplete.acceptEitherAsync(complete, (z) -> {}, e));
3390	+
3391	+	fs.add(complete.runAfterEitherAsync(incomplete, () -> {}, e));
3392	+	fs.add(incomplete.runAfterEitherAsync(complete, () -> {}, e));
3393	+
3394	+	for (CompletableFuture<?> future : fs)
3395	+	checkCompletedWithWrappedException(future, ex);
3396	+	futures.addAll(fs);
3397	+	}
3398	+
3399	+	incomplete.complete(v);
3400	+
3401	+	for (CompletableFuture<?> future : futures)
3402	+	checkCompletedWithWrappedException(future, ex);
3403	+	}
3404	+	}
3405	+
3406	+	/**
3407	+	* Test submissions to an executor that rejects all tasks, but
3408	+	* should never be invoked because the dependent future is
3409	+	* explicitly completed.
3410	+	*/
3411	+	public void testRejectingExecutorNeverInvoked() {
3412	+	final RejectedExecutionException ex = new RejectedExecutionException();
3413	+	class CountingRejectingExecutor implements Executor {
3414	+	final AtomicInteger count = new AtomicInteger(0);
3415	+	public void execute(Runnable r) {
3416	+	count.getAndIncrement();
3417	+	throw ex;
3418	+	}
3419	+	}
3420	+	final CountingRejectingExecutor e = new CountingRejectingExecutor();
3421	+
3422	+	for (Integer v : new Integer[] { 1, null }) {
3423	+
3424	+	final CompletableFuture<Integer> complete = CompletableFuture.completedFuture(v);
3425	+	final CompletableFuture<Integer> incomplete = new CompletableFuture<>();
3426	+
3427	+	List<CompletableFuture<?>> futures = new ArrayList<>();
3428	+
3429	+	List<CompletableFuture<Integer>> srcs = new ArrayList<>();
3430	+	srcs.add(complete);
3431	+	srcs.add(incomplete);
3432	+
3433	+	List<CompletableFuture<?>> fs = new ArrayList<>();
3434	+	fs.add(incomplete.thenRunAsync(() -> {}, e));
3435	+	fs.add(incomplete.thenAcceptAsync((z) -> {}, e));
3436	+	fs.add(incomplete.thenApplyAsync((z) -> z, e));
3437	+
3438	+	fs.add(incomplete.thenCombineAsync(incomplete, (x, y) -> x, e));
3439	+	fs.add(incomplete.thenAcceptBothAsync(incomplete, (x, y) -> {}, e));
3440	+	fs.add(incomplete.runAfterBothAsync(incomplete, () -> {}, e));
3441	+
3442	+	fs.add(incomplete.applyToEitherAsync(incomplete, (z) -> z, e));
3443	+	fs.add(incomplete.acceptEitherAsync(incomplete, (z) -> {}, e));
3444	+	fs.add(incomplete.runAfterEitherAsync(incomplete, () -> {}, e));
3445	+
3446	+	fs.add(incomplete.thenComposeAsync((z) -> null, e));
3447	+	fs.add(incomplete.whenCompleteAsync((z, t) -> {}, e));
3448	+	fs.add(incomplete.handleAsync((z, t) -> null, e));
3449	+
3450	+	fs.add(complete.thenCombineAsync(incomplete, (x, y) -> x, e));
3451	+	fs.add(incomplete.thenCombineAsync(complete, (x, y) -> x, e));
3452	+
3453	+	fs.add(complete.thenAcceptBothAsync(incomplete, (x, y) -> {}, e));
3454	+	fs.add(incomplete.thenAcceptBothAsync(complete, (x, y) -> {}, e));
3455	+
3456	+	fs.add(complete.runAfterBothAsync(incomplete, () -> {}, e));
3457	+	fs.add(incomplete.runAfterBothAsync(complete, () -> {}, e));
3458	+
3459	+	for (CompletableFuture<?> future : fs)
3460	+	checkIncomplete(future);
3461	+
3462	+	for (CompletableFuture<?> future : fs)
3463	+	future.complete(null);
3464	+
3465	+	incomplete.complete(v);
3466	+
3467	+	for (CompletableFuture<?> future : fs)
3468	+	checkCompletedNormally(future, null);
3469	+
3470	+	assertEquals(0, e.count.get());
3471	+
3472	+	}
3473	+	}
3474	+
3475	+	/**
3476		* toCompletableFuture returns this CompletableFuture.
3477		*/
3478		public void testToCompletableFuture() {
#	Line 3063 | Line 3480 | public class CompletableFutureTest exten
3480		assertSame(f, f.toCompletableFuture());
3481		}
3482
3483	<	//     public void testRunAfterEither_resultDeterminedAtTimeOfCreation() {
3484	<	//         for (ExecutionMode m : ExecutionMode.values())
3485	<	//         for (boolean mayInterruptIfRunning : new boolean[] { true, false })
3486	<	//         for (Integer v1 : new Integer[] { 1, null })
3487	<	//     {
3488	<	//         final CompletableFuture<Integer> f = new CompletableFuture<>();
3489	<	//         final CompletableFuture<Integer> g = new CompletableFuture<>();
3490	<	//         final Noop[] rs = new Noop[2];
3491	<	//         for (int i = 0; i < rs.length; i++) rs[i] = new Noop(m);
3492	<	//         f.complete(v1);
3493	<	//         final CompletableFuture<Void> h0 = m.runAfterEither(f, g, rs[0]);
3494	<	//         final CompletableFuture<Void> h1 = m.runAfterEither(g, f, rs[1]);
3495	<	//         assertTrue(g.cancel(mayInterruptIfRunning));
3496	<	//         checkCompletedNormally(h0, null);
3497	<	//         checkCompletedNormally(h1, null);
3498	<	//         for (Noop r : rs) r.assertInvoked();
3499	<	//     }}
3483	>	// jdk9
3484	>
3485	>	/**
3486	>	* newIncompleteFuture returns an incomplete CompletableFuture
3487	>	*/
3488	>	public void testNewIncompleteFuture() {
3489	>	for (Integer v1 : new Integer[] { 1, null })
3490	>	{
3491	>	CompletableFuture<Integer> f = new CompletableFuture<>();
3492	>	CompletableFuture<Integer> g = f.newIncompleteFuture();
3493	>	checkIncomplete(f);
3494	>	checkIncomplete(g);
3495	>	f.complete(v1);
3496	>	checkCompletedNormally(f, v1);
3497	>	checkIncomplete(g);
3498	>	g.complete(v1);
3499	>	checkCompletedNormally(g, v1);
3500	>	assertSame(g.getClass(), CompletableFuture.class);
3501	>	}}
3502	>
3503	>	/**
3504	>	* completedStage returns a completed CompletionStage
3505	>	*/
3506	>	public void testCompletedStage() {
3507	>	AtomicInteger x = new AtomicInteger(0);
3508	>	AtomicReference<Throwable> r = new AtomicReference<Throwable>();
3509	>	CompletionStage<Integer> f = CompletableFuture.completedStage(1);
3510	>	f.whenComplete((v, e) -> {if (e != null) r.set(e); else x.set(v);});
3511	>	assertEquals(x.get(), 1);
3512	>	assertNull(r.get());
3513	>	}
3514	>
3515	>	/**
3516	>	* defaultExecutor by default returns the commonPool if
3517	>	* it supports more than one thread.
3518	>	*/
3519	>	public void testDefaultExecutor() {
3520	>	CompletableFuture<Integer> f = new CompletableFuture<>();
3521	>	Executor e = f.defaultExecutor();
3522	>	Executor c = ForkJoinPool.commonPool();
3523	>	if (ForkJoinPool.getCommonPoolParallelism() > 1)
3524	>	assertSame(e, c);
3525	>	else
3526	>	assertNotSame(e, c);
3527	>	}
3528	>
3529	>	/**
3530	>	* failedFuture returns a CompletableFuture completed
3531	>	* exceptionally with the given Exception
3532	>	*/
3533	>	public void testFailedFuture() {
3534	>	CFException ex = new CFException();
3535	>	CompletableFuture<Integer> f = CompletableFuture.failedFuture(ex);
3536	>	checkCompletedExceptionally(f, ex);
3537	>	}
3538	>
3539	>	/**
3540	>	* failedFuture(null) throws NPE
3541	>	*/
3542	>	public void testFailedFuture_null() {
3543	>	try {
3544	>	CompletableFuture<Integer> f = CompletableFuture.failedFuture(null);
3545	>	shouldThrow();
3546	>	} catch (NullPointerException success) {}
3547	>	}
3548	>
3549	>	/**
3550	>	* copy returns a CompletableFuture that is completed normally,
3551	>	* with the same value, when source is.
3552	>	*/
3553	>	public void testCopy() {
3554	>	CompletableFuture<Integer> f = new CompletableFuture<>();
3555	>	CompletableFuture<Integer> g = f.copy();
3556	>	checkIncomplete(f);
3557	>	checkIncomplete(g);
3558	>	f.complete(1);
3559	>	checkCompletedNormally(f, 1);
3560	>	checkCompletedNormally(g, 1);
3561	>	}
3562	>
3563	>	/**
3564	>	* copy returns a CompletableFuture that is completed exceptionally
3565	>	* when source is.
3566	>	*/
3567	>	public void testCopy2() {
3568	>	CompletableFuture<Integer> f = new CompletableFuture<>();
3569	>	CompletableFuture<Integer> g = f.copy();
3570	>	checkIncomplete(f);
3571	>	checkIncomplete(g);
3572	>	CFException ex = new CFException();
3573	>	f.completeExceptionally(ex);
3574	>	checkCompletedExceptionally(f, ex);
3575	>	checkCompletedWithWrappedException(g, ex);
3576	>	}
3577	>
3578	>	/**
3579	>	* minimalCompletionStage returns a CompletableFuture that is
3580	>	* completed normally, with the same value, when source is.
3581	>	*/
3582	>	public void testMinimalCompletionStage() {
3583	>	CompletableFuture<Integer> f = new CompletableFuture<>();
3584	>	CompletionStage<Integer> g = f.minimalCompletionStage();
3585	>	AtomicInteger x = new AtomicInteger(0);
3586	>	AtomicReference<Throwable> r = new AtomicReference<Throwable>();
3587	>	checkIncomplete(f);
3588	>	g.whenComplete((v, e) -> {if (e != null) r.set(e); else x.set(v);});
3589	>	f.complete(1);
3590	>	checkCompletedNormally(f, 1);
3591	>	assertEquals(x.get(), 1);
3592	>	assertNull(r.get());
3593	>	}
3594	>
3595	>	/**
3596	>	* minimalCompletionStage returns a CompletableFuture that is
3597	>	* completed exceptionally when source is.
3598	>	*/
3599	>	public void testMinimalCompletionStage2() {
3600	>	CompletableFuture<Integer> f = new CompletableFuture<>();
3601	>	CompletionStage<Integer> g = f.minimalCompletionStage();
3602	>	AtomicInteger x = new AtomicInteger(0);
3603	>	AtomicReference<Throwable> r = new AtomicReference<Throwable>();
3604	>	g.whenComplete((v, e) -> {if (e != null) r.set(e); else x.set(v);});
3605	>	checkIncomplete(f);
3606	>	CFException ex = new CFException();
3607	>	f.completeExceptionally(ex);
3608	>	checkCompletedExceptionally(f, ex);
3609	>	assertEquals(x.get(), 0);
3610	>	assertEquals(r.get().getCause(), ex);
3611	>	}
3612	>
3613	>	/**
3614	>	* failedStage returns a CompletionStage completed
3615	>	* exceptionally with the given Exception
3616	>	*/
3617	>	public void testFailedStage() {
3618	>	CFException ex = new CFException();
3619	>	CompletionStage<Integer> f = CompletableFuture.failedStage(ex);
3620	>	AtomicInteger x = new AtomicInteger(0);
3621	>	AtomicReference<Throwable> r = new AtomicReference<Throwable>();
3622	>	f.whenComplete((v, e) -> {if (e != null) r.set(e); else x.set(v);});
3623	>	assertEquals(x.get(), 0);
3624	>	assertEquals(r.get(), ex);
3625	>	}
3626	>
3627	>	/**
3628	>	* completeAsync completes with value of given supplier
3629	>	*/
3630	>	public void testCompleteAsync() {
3631	>	for (Integer v1 : new Integer[] { 1, null })
3632	>	{
3633	>	CompletableFuture<Integer> f = new CompletableFuture<>();
3634	>	f.completeAsync(() -> v1);
3635	>	f.join();
3636	>	checkCompletedNormally(f, v1);
3637	>	}}
3638	>
3639	>	/**
3640	>	* completeAsync completes exceptionally if given supplier throws
3641	>	*/
3642	>	public void testCompleteAsync2() {
3643	>	CompletableFuture<Integer> f = new CompletableFuture<>();
3644	>	CFException ex = new CFException();
3645	>	f.completeAsync(() -> {if (true) throw ex; return 1;});
3646	>	try {
3647	>	f.join();
3648	>	shouldThrow();
3649	>	} catch (CompletionException success) {}
3650	>	checkCompletedWithWrappedException(f, ex);
3651	>	}
3652	>
3653	>	/**
3654	>	* completeAsync with given executor completes with value of given supplier
3655	>	*/
3656	>	public void testCompleteAsync3() {
3657	>	for (Integer v1 : new Integer[] { 1, null })
3658	>	{
3659	>	CompletableFuture<Integer> f = new CompletableFuture<>();
3660	>	ThreadExecutor executor = new ThreadExecutor();
3661	>	f.completeAsync(() -> v1, executor);
3662	>	assertSame(v1, f.join());
3663	>	checkCompletedNormally(f, v1);
3664	>	assertEquals(1, executor.count.get());
3665	>	}}
3666	>
3667	>	/**
3668	>	* completeAsync with given executor completes exceptionally if
3669	>	* given supplier throws
3670	>	*/
3671	>	public void testCompleteAsync4() {
3672	>	CompletableFuture<Integer> f = new CompletableFuture<>();
3673	>	CFException ex = new CFException();
3674	>	ThreadExecutor executor = new ThreadExecutor();
3675	>	f.completeAsync(() -> {if (true) throw ex; return 1;}, executor);
3676	>	try {
3677	>	f.join();
3678	>	shouldThrow();
3679	>	} catch (CompletionException success) {}
3680	>	checkCompletedWithWrappedException(f, ex);
3681	>	assertEquals(1, executor.count.get());
3682	>	}
3683	>
3684	>	/**
3685	>	* orTimeout completes with TimeoutException if not complete
3686	>	*/
3687	>	public void testOrTimeout_timesOut() {
3688	>	long timeoutMillis = timeoutMillis();
3689	>	CompletableFuture<Integer> f = new CompletableFuture<>();
3690	>	long startTime = System.nanoTime();
3691	>	assertSame(f, f.orTimeout(timeoutMillis, MILLISECONDS));
3692	>	checkCompletedWithTimeoutException(f);
3693	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
3694	>	}
3695	>
3696	>	/**
3697	>	* orTimeout completes normally if completed before timeout
3698	>	*/
3699	>	public void testOrTimeout_completed() {
3700	>	for (Integer v1 : new Integer[] { 1, null })
3701	>	{
3702	>	CompletableFuture<Integer> f = new CompletableFuture<>();
3703	>	CompletableFuture<Integer> g = new CompletableFuture<>();
3704	>	long startTime = System.nanoTime();
3705	>	f.complete(v1);
3706	>	assertSame(f, f.orTimeout(LONG_DELAY_MS, MILLISECONDS));
3707	>	assertSame(g, g.orTimeout(LONG_DELAY_MS, MILLISECONDS));
3708	>	g.complete(v1);
3709	>	checkCompletedNormally(f, v1);
3710	>	checkCompletedNormally(g, v1);
3711	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS / 2);
3712	>	}}
3713	>
3714	>	/**
3715	>	* completeOnTimeout completes with given value if not complete
3716	>	*/
3717	>	public void testCompleteOnTimeout_timesOut() {
3718	>	testInParallel(() -> testCompleteOnTimeout_timesOut(42),
3719	>	() -> testCompleteOnTimeout_timesOut(null));
3720	>	}
3721	>
3722	>	/**
3723	>	* completeOnTimeout completes with given value if not complete
3724	>	*/
3725	>	public void testCompleteOnTimeout_timesOut(Integer v) {
3726	>	long timeoutMillis = timeoutMillis();
3727	>	CompletableFuture<Integer> f = new CompletableFuture<>();
3728	>	long startTime = System.nanoTime();
3729	>	assertSame(f, f.completeOnTimeout(v, timeoutMillis, MILLISECONDS));
3730	>	assertSame(v, f.join());
3731	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
3732	>	f.complete(99);         // should have no effect
3733	>	checkCompletedNormally(f, v);
3734	>	}
3735	>
3736	>	/**
3737	>	* completeOnTimeout has no effect if completed within timeout
3738	>	*/
3739	>	public void testCompleteOnTimeout_completed() {
3740	>	for (Integer v1 : new Integer[] { 1, null })
3741	>	{
3742	>	CompletableFuture<Integer> f = new CompletableFuture<>();
3743	>	CompletableFuture<Integer> g = new CompletableFuture<>();
3744	>	long startTime = System.nanoTime();
3745	>	f.complete(v1);
3746	>	assertSame(f, f.completeOnTimeout(-1, LONG_DELAY_MS, MILLISECONDS));
3747	>	assertSame(g, g.completeOnTimeout(-1, LONG_DELAY_MS, MILLISECONDS));
3748	>	g.complete(v1);
3749	>	checkCompletedNormally(f, v1);
3750	>	checkCompletedNormally(g, v1);
3751	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS / 2);
3752	>	}}
3753	>
3754	>	/**
3755	>	* delayedExecutor returns an executor that delays submission
3756	>	*/
3757	>	public void testDelayedExecutor() {
3758	>	testInParallel(() -> testDelayedExecutor(null, null),
3759	>	() -> testDelayedExecutor(null, 1),
3760	>	() -> testDelayedExecutor(new ThreadExecutor(), 1),
3761	>	() -> testDelayedExecutor(new ThreadExecutor(), 1));
3762	>	}
3763	>
3764	>	public void testDelayedExecutor(Executor executor, Integer v) throws Exception {
3765	>	long timeoutMillis = timeoutMillis();
3766	>	// Use an "unreasonably long" long timeout to catch lingering threads
3767	>	long longTimeoutMillis = 1000 * 60 * 60 * 24;
3768	>	final Executor delayer, longDelayer;
3769	>	if (executor == null) {
3770	>	delayer = CompletableFuture.delayedExecutor(timeoutMillis, MILLISECONDS);
3771	>	longDelayer = CompletableFuture.delayedExecutor(longTimeoutMillis, MILLISECONDS);
3772	>	} else {
3773	>	delayer = CompletableFuture.delayedExecutor(timeoutMillis, MILLISECONDS, executor);
3774	>	longDelayer = CompletableFuture.delayedExecutor(longTimeoutMillis, MILLISECONDS, executor);
3775	>	}
3776	>	long startTime = System.nanoTime();
3777	>	CompletableFuture<Integer> f =
3778	>	CompletableFuture.supplyAsync(() -> v, delayer);
3779	>	CompletableFuture<Integer> g =
3780	>	CompletableFuture.supplyAsync(() -> v, longDelayer);
3781	>
3782	>	assertNull(g.getNow(null));
3783	>
3784	>	assertSame(v, f.get(LONG_DELAY_MS, MILLISECONDS));
3785	>	long millisElapsed = millisElapsedSince(startTime);
3786	>	assertTrue(millisElapsed >= timeoutMillis);
3787	>	assertTrue(millisElapsed < LONG_DELAY_MS / 2);
3788	>
3789	>	checkCompletedNormally(f, v);
3790	>
3791	>	checkIncomplete(g);
3792	>	assertTrue(g.cancel(true));
3793	>	}
3794	>
3795	>	//--- tests of implementation details; not part of official tck ---
3796	>
3797	>	Object resultOf(CompletableFuture<?> f) {
3798	>	SecurityManager sm = System.getSecurityManager();
3799	>	if (sm != null) {
3800	>	try {
3801	>	System.setSecurityManager(null);
3802	>	} catch (SecurityException giveUp) {
3803	>	return "Reflection not available";
3804	>	}
3805	>	}
3806	>
3807	>	try {
3808	>	java.lang.reflect.Field resultField
3809	>	= CompletableFuture.class.getDeclaredField("result");
3810	>	resultField.setAccessible(true);
3811	>	return resultField.get(f);
3812	>	} catch (Throwable t) {
3813	>	throw new AssertionError(t);
3814	>	} finally {
3815	>	if (sm != null) System.setSecurityManager(sm);
3816	>	}
3817	>	}
3818	>
3819	>	public void testExceptionPropagationReusesResultObject() {
3820	>	if (!testImplementationDetails) return;
3821	>	for (ExecutionMode m : ExecutionMode.values())
3822	>	{
3823	>	final CFException ex = new CFException();
3824	>	final CompletableFuture<Integer> v42 = CompletableFuture.completedFuture(42);
3825	>	final CompletableFuture<Integer> incomplete = new CompletableFuture<>();
3826	>
3827	>	List<Function<CompletableFuture<Integer>, CompletableFuture<?>>> funs
3828	>	= new ArrayList<>();
3829	>
3830	>	funs.add((y) -> m.thenRun(y, new Noop(m)));
3831	>	funs.add((y) -> m.thenAccept(y, new NoopConsumer(m)));
3832	>	funs.add((y) -> m.thenApply(y, new IncFunction(m)));
3833	>
3834	>	funs.add((y) -> m.runAfterEither(y, incomplete, new Noop(m)));
3835	>	funs.add((y) -> m.acceptEither(y, incomplete, new NoopConsumer(m)));
3836	>	funs.add((y) -> m.applyToEither(y, incomplete, new IncFunction(m)));
3837	>
3838	>	funs.add((y) -> m.runAfterBoth(y, v42, new Noop(m)));
3839	>	funs.add((y) -> m.runAfterBoth(v42, y, new Noop(m)));
3840	>	funs.add((y) -> m.thenAcceptBoth(y, v42, new SubtractAction(m)));
3841	>	funs.add((y) -> m.thenAcceptBoth(v42, y, new SubtractAction(m)));
3842	>	funs.add((y) -> m.thenCombine(y, v42, new SubtractFunction(m)));
3843	>	funs.add((y) -> m.thenCombine(v42, y, new SubtractFunction(m)));
3844	>
3845	>	funs.add((y) -> m.whenComplete(y, (Integer r, Throwable t) -> {}));
3846	>
3847	>	funs.add((y) -> m.thenCompose(y, new CompletableFutureInc(m)));
3848	>
3849	>	funs.add((y) -> CompletableFuture.allOf(new CompletableFuture<?>[] {y}));
3850	>	funs.add((y) -> CompletableFuture.allOf(new CompletableFuture<?>[] {y, v42}));
3851	>	funs.add((y) -> CompletableFuture.allOf(new CompletableFuture<?>[] {v42, y}));
3852	>	funs.add((y) -> CompletableFuture.anyOf(new CompletableFuture<?>[] {y}));
3853	>	funs.add((y) -> CompletableFuture.anyOf(new CompletableFuture<?>[] {y, incomplete}));
3854	>	funs.add((y) -> CompletableFuture.anyOf(new CompletableFuture<?>[] {incomplete, y}));
3855	>
3856	>	for (Function<CompletableFuture<Integer>, CompletableFuture<?>>
3857	>	fun : funs) {
3858	>	CompletableFuture<Integer> f = new CompletableFuture<>();
3859	>	f.completeExceptionally(ex);
3860	>	CompletableFuture<Integer> src = m.thenApply(f, new IncFunction(m));
3861	>	checkCompletedWithWrappedException(src, ex);
3862	>	CompletableFuture<?> dep = fun.apply(src);
3863	>	checkCompletedWithWrappedException(dep, ex);
3864	>	assertSame(resultOf(src), resultOf(dep));
3865	>	}
3866	>
3867	>	for (Function<CompletableFuture<Integer>, CompletableFuture<?>>
3868	>	fun : funs) {
3869	>	CompletableFuture<Integer> f = new CompletableFuture<>();
3870	>	CompletableFuture<Integer> src = m.thenApply(f, new IncFunction(m));
3871	>	CompletableFuture<?> dep = fun.apply(src);
3872	>	f.completeExceptionally(ex);
3873	>	checkCompletedWithWrappedException(src, ex);
3874	>	checkCompletedWithWrappedException(dep, ex);
3875	>	assertSame(resultOf(src), resultOf(dep));
3876	>	}
3877	>
3878	>	for (boolean mayInterruptIfRunning : new boolean[] { true, false })
3879	>	for (Function<CompletableFuture<Integer>, CompletableFuture<?>>
3880	>	fun : funs) {
3881	>	CompletableFuture<Integer> f = new CompletableFuture<>();
3882	>	f.cancel(mayInterruptIfRunning);
3883	>	checkCancelled(f);
3884	>	CompletableFuture<Integer> src = m.thenApply(f, new IncFunction(m));
3885	>	checkCompletedWithWrappedCancellationException(src);
3886	>	CompletableFuture<?> dep = fun.apply(src);
3887	>	checkCompletedWithWrappedCancellationException(dep);
3888	>	assertSame(resultOf(src), resultOf(dep));
3889	>	}
3890	>
3891	>	for (boolean mayInterruptIfRunning : new boolean[] { true, false })
3892	>	for (Function<CompletableFuture<Integer>, CompletableFuture<?>>
3893	>	fun : funs) {
3894	>	CompletableFuture<Integer> f = new CompletableFuture<>();
3895	>	CompletableFuture<Integer> src = m.thenApply(f, new IncFunction(m));
3896	>	CompletableFuture<?> dep = fun.apply(src);
3897	>	f.cancel(mayInterruptIfRunning);
3898	>	checkCancelled(f);
3899	>	checkCompletedWithWrappedCancellationException(src);
3900	>	checkCompletedWithWrappedCancellationException(dep);
3901	>	assertSame(resultOf(src), resultOf(dep));
3902	>	}
3903	>	}}
3904	>
3905	>	/**
3906	>	* Minimal completion stages throw UOE for all non-CompletionStage methods
3907	>	*/
3908	>	public void testMinimalCompletionStage_minimality() {
3909	>	if (!testImplementationDetails) return;
3910	>	Function<Method, String> toSignature =
3911	>	(method) -> method.getName() + Arrays.toString(method.getParameterTypes());
3912	>	Predicate<Method> isNotStatic =
3913	>	(method) -> (method.getModifiers() & Modifier.STATIC) == 0;
3914	>	List<Method> minimalMethods =
3915	>	Stream.of(Object.class, CompletionStage.class)
3916	>	.flatMap((klazz) -> Stream.of(klazz.getMethods()))
3917	>	.filter(isNotStatic)
3918	>	.collect(Collectors.toList());
3919	>	// Methods from CompletableFuture permitted NOT to throw UOE
3920	>	String[] signatureWhitelist = {
3921	>	"newIncompleteFuture[]",
3922	>	"defaultExecutor[]",
3923	>	"minimalCompletionStage[]",
3924	>	"copy[]",
3925	>	};
3926	>	Set<String> permittedMethodSignatures =
3927	>	Stream.concat(minimalMethods.stream().map(toSignature),
3928	>	Stream.of(signatureWhitelist))
3929	>	.collect(Collectors.toSet());
3930	>	List<Method> allMethods = Stream.of(CompletableFuture.class.getMethods())
3931	>	.filter(isNotStatic)
3932	>	.filter((method) -> !permittedMethodSignatures.contains(toSignature.apply(method)))
3933	>	.collect(Collectors.toList());
3934	>
3935	>	CompletionStage<Integer> minimalStage =
3936	>	new CompletableFuture<Integer>().minimalCompletionStage();
3937	>
3938	>	List<Method> bugs = new ArrayList<>();
3939	>	for (Method method : allMethods) {
3940	>	Class<?>[] parameterTypes = method.getParameterTypes();
3941	>	Object[] args = new Object[parameterTypes.length];
3942	>	// Manufacture boxed primitives for primitive params
3943	>	for (int i = 0; i < args.length; i++) {
3944	>	Class<?> type = parameterTypes[i];
3945	>	if (parameterTypes[i] == boolean.class)
3946	>	args[i] = false;
3947	>	else if (parameterTypes[i] == int.class)
3948	>	args[i] = 0;
3949	>	else if (parameterTypes[i] == long.class)
3950	>	args[i] = 0L;
3951	>	}
3952	>	try {
3953	>	method.invoke(minimalStage, args);
3954	>	bugs.add(method);
3955	>	}
3956	>	catch (java.lang.reflect.InvocationTargetException expected) {
3957	>	if (! (expected.getCause() instanceof UnsupportedOperationException)) {
3958	>	bugs.add(method);
3959	>	// expected.getCause().printStackTrace();
3960	>	}
3961	>	}
3962	>	catch (ReflectiveOperationException bad) { throw new Error(bad); }
3963	>	}
3964	>	if (!bugs.isEmpty())
3965	>	throw new Error("Methods did not throw UOE: " + bugs.toString());
3966	>	}
3967	>
3968	>	static class Monad {
3969	>	static class ZeroException extends RuntimeException {
3970	>	public ZeroException() { super("monadic zero"); }
3971	>	}
3972	>	// "return", "unit"
3973	>	static <T> CompletableFuture<T> unit(T value) {
3974	>	return completedFuture(value);
3975	>	}
3976	>	// monadic zero ?
3977	>	static <T> CompletableFuture<T> zero() {
3978	>	return failedFuture(new ZeroException());
3979	>	}
3980	>	// >=>
3981	>	static <T,U,V> Function<T, CompletableFuture<V>> compose
3982	>	(Function<T, CompletableFuture<U>> f,
3983	>	Function<U, CompletableFuture<V>> g) {
3984	>	return (x) -> f.apply(x).thenCompose(g);
3985	>	}
3986	>
3987	>	static void assertZero(CompletableFuture<?> f) {
3988	>	try {
3989	>	f.getNow(null);
3990	>	throw new AssertionFailedError("should throw");
3991	>	} catch (CompletionException success) {
3992	>	assertTrue(success.getCause() instanceof ZeroException);
3993	>	}
3994	>	}
3995	>
3996	>	static <T> void assertFutureEquals(CompletableFuture<T> f,
3997	>	CompletableFuture<T> g) {
3998	>	T fval = null, gval = null;
3999	>	Throwable fex = null, gex = null;
4000	>
4001	>	try { fval = f.get(); }
4002	>	catch (ExecutionException ex) { fex = ex.getCause(); }
4003	>	catch (Throwable ex) { fex = ex; }
4004	>
4005	>	try { gval = g.get(); }
4006	>	catch (ExecutionException ex) { gex = ex.getCause(); }
4007	>	catch (Throwable ex) { gex = ex; }
4008	>
4009	>	if (fex != null || gex != null)
4010	>	assertSame(fex.getClass(), gex.getClass());
4011	>	else
4012	>	assertEquals(fval, gval);
4013	>	}
4014	>
4015	>	static class PlusFuture<T> extends CompletableFuture<T> {
4016	>	AtomicReference<Throwable> firstFailure = new AtomicReference<>(null);
4017	>	}
4018	>
4019	>	/** Implements "monadic plus". */
4020	>	static <T> CompletableFuture<T> plus(CompletableFuture<? extends T> f,
4021	>	CompletableFuture<? extends T> g) {
4022	>	PlusFuture<T> plus = new PlusFuture<T>();
4023	>	BiConsumer<T, Throwable> action = (T result, Throwable ex) -> {
4024	>	try {
4025	>	if (ex == null) {
4026	>	if (plus.complete(result))
4027	>	if (plus.firstFailure.get() != null)
4028	>	plus.firstFailure.set(null);
4029	>	}
4030	>	else if (plus.firstFailure.compareAndSet(null, ex)) {
4031	>	if (plus.isDone())
4032	>	plus.firstFailure.set(null);
4033	>	}
4034	>	else {
4035	>	// first failure has precedence
4036	>	Throwable first = plus.firstFailure.getAndSet(null);
4037	>
4038	>	// may fail with "Self-suppression not permitted"
4039	>	try { first.addSuppressed(ex); }
4040	>	catch (Exception ignored) {}
4041	>
4042	>	plus.completeExceptionally(first);
4043	>	}
4044	>	} catch (Throwable unexpected) {
4045	>	plus.completeExceptionally(unexpected);
4046	>	}
4047	>	};
4048	>	f.whenComplete(action);
4049	>	g.whenComplete(action);
4050	>	return plus;
4051	>	}
4052	>	}
4053	>
4054	>	/**
4055	>	* CompletableFuture is an additive monad - sort of.
4056	>	* https://en.wikipedia.org/wiki/Monad_(functional_programming)#Additive_monads
4057	>	*/
4058	>	public void testAdditiveMonad() throws Throwable {
4059	>	Function<Long, CompletableFuture<Long>> unit = Monad::unit;
4060	>	CompletableFuture<Long> zero = Monad.zero();
4061	>
4062	>	// Some mutually non-commutative functions
4063	>	Function<Long, CompletableFuture<Long>> triple
4064	>	= (x) -> Monad.unit(3 * x);
4065	>	Function<Long, CompletableFuture<Long>> inc
4066	>	= (x) -> Monad.unit(x + 1);
4067	>
4068	>	// unit is a right identity: m >>= unit === m
4069	>	Monad.assertFutureEquals(inc.apply(5L).thenCompose(unit),
4070	>	inc.apply(5L));
4071	>	// unit is a left identity: (unit x) >>= f === f x
4072	>	Monad.assertFutureEquals(unit.apply(5L).thenCompose(inc),
4073	>	inc.apply(5L));
4074	>
4075	>	// associativity: (m >>= f) >>= g === m >>= ( \x -> (f x >>= g) )
4076	>	Monad.assertFutureEquals(
4077	>	unit.apply(5L).thenCompose(inc).thenCompose(triple),
4078	>	unit.apply(5L).thenCompose((x) -> inc.apply(x).thenCompose(triple)));
4079	>
4080	>	// The case for CompletableFuture as an additive monad is weaker...
4081	>
4082	>	// zero is a monadic zero
4083	>	Monad.assertZero(zero);
4084	>
4085	>	// left zero: zero >>= f === zero
4086	>	Monad.assertZero(zero.thenCompose(inc));
4087	>	// right zero: f >>= (\x -> zero) === zero
4088	>	Monad.assertZero(inc.apply(5L).thenCompose((x) -> zero));
4089	>
4090	>	// f plus zero === f
4091	>	Monad.assertFutureEquals(Monad.unit(5L),
4092	>	Monad.plus(Monad.unit(5L), zero));
4093	>	// zero plus f === f
4094	>	Monad.assertFutureEquals(Monad.unit(5L),
4095	>	Monad.plus(zero, Monad.unit(5L)));
4096	>	// zero plus zero === zero
4097	>	Monad.assertZero(Monad.plus(zero, zero));
4098	>	{
4099	>	CompletableFuture<Long> f = Monad.plus(Monad.unit(5L),
4100	>	Monad.unit(8L));
4101	>	// non-determinism
4102	>	assertTrue(f.get() == 5L || f.get() == 8L);
4103	>	}
4104	>
4105	>	CompletableFuture<Long> godot = new CompletableFuture<>();
4106	>	// f plus godot === f (doesn't wait for godot)
4107	>	Monad.assertFutureEquals(Monad.unit(5L),
4108	>	Monad.plus(Monad.unit(5L), godot));
4109	>	// godot plus f === f (doesn't wait for godot)
4110	>	Monad.assertFutureEquals(Monad.unit(5L),
4111	>	Monad.plus(godot, Monad.unit(5L)));
4112	>	}
4113	>
4114	>	/**
4115	>	* A single CompletableFuture with many dependents.
4116	>	* A demo of scalability - runtime is O(n).
4117	>	*/
4118	>	public void testManyDependents() throws Throwable {
4119	>	final int n = 1_000;
4120	>	final CompletableFuture<Void> head = new CompletableFuture<>();
4121	>	final CompletableFuture<Void> complete = CompletableFuture.completedFuture((Void)null);
4122	>	final AtomicInteger count = new AtomicInteger(0);
4123	>	for (int i = 0; i < n; i++) {
4124	>	head.thenRun(() -> count.getAndIncrement());
4125	>	head.thenAccept((x) -> count.getAndIncrement());
4126	>	head.thenApply((x) -> count.getAndIncrement());
4127	>
4128	>	head.runAfterBoth(complete, () -> count.getAndIncrement());
4129	>	head.thenAcceptBoth(complete, (x, y) -> count.getAndIncrement());
4130	>	head.thenCombine(complete, (x, y) -> count.getAndIncrement());
4131	>	complete.runAfterBoth(head, () -> count.getAndIncrement());
4132	>	complete.thenAcceptBoth(head, (x, y) -> count.getAndIncrement());
4133	>	complete.thenCombine(head, (x, y) -> count.getAndIncrement());
4134	>
4135	>	head.runAfterEither(new CompletableFuture<Void>(), () -> count.getAndIncrement());
4136	>	head.acceptEither(new CompletableFuture<Void>(), (x) -> count.getAndIncrement());
4137	>	head.applyToEither(new CompletableFuture<Void>(), (x) -> count.getAndIncrement());
4138	>	new CompletableFuture<Void>().runAfterEither(head, () -> count.getAndIncrement());
4139	>	new CompletableFuture<Void>().acceptEither(head, (x) -> count.getAndIncrement());
4140	>	new CompletableFuture<Void>().applyToEither(head, (x) -> count.getAndIncrement());
4141	>	}
4142	>	head.complete(null);
4143	>	assertEquals(5 * 3 * n, count.get());
4144	>	}
4145	>
4146	>	//     static <U> U join(CompletionStage<U> stage) {
4147	>	//         CompletableFuture<U> f = new CompletableFuture<>();
4148	>	//         stage.whenComplete((v, ex) -> {
4149	>	//             if (ex != null) f.completeExceptionally(ex); else f.complete(v);
4150	>	//         });
4151	>	//         return f.join();
4152	>	//     }
4153	>
4154	>	//     static <U> boolean isDone(CompletionStage<U> stage) {
4155	>	//         CompletableFuture<U> f = new CompletableFuture<>();
4156	>	//         stage.whenComplete((v, ex) -> {
4157	>	//             if (ex != null) f.completeExceptionally(ex); else f.complete(v);
4158	>	//         });
4159	>	//         return f.isDone();
4160	>	//     }
4161	>
4162	>	//     static <U> U join2(CompletionStage<U> stage) {
4163	>	//         return stage.toCompletableFuture().copy().join();
4164	>	//     }
4165	>
4166	>	//     static <U> boolean isDone2(CompletionStage<U> stage) {
4167	>	//         return stage.toCompletableFuture().copy().isDone();
4168	>	//     }
4169
4170		}

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