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Comparing jsr166/src/test/tck/CompletableFutureTest.java (file contents):
Revision 1.78 by jsr166, Sat Jun 7 23:32:17 2014 UTC vs.
Revision 1.149 by jsr166, Sun Jun 26 16:01:17 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.TimeoutException;
34	+	import java.util.concurrent.TimeUnit;
35		import java.util.concurrent.atomic.AtomicInteger;
36	<	import static java.util.concurrent.TimeUnit.MILLISECONDS;
25	<	import static java.util.concurrent.TimeUnit.SECONDS;
26	<	import java.util.*;
27	<	import java.util.function.Supplier;
28	<	import java.util.function.Consumer;
36	>	import java.util.concurrent.atomic.AtomicReference;
37		import java.util.function.BiConsumer;
30	–	import java.util.function.Function;
38		import java.util.function.BiFunction;
39	+	import java.util.function.Consumer;
40	+	import java.util.function.Function;
41	+	import java.util.function.Predicate;
42	+	import java.util.function.Supplier;
43	+
44	+	import junit.framework.AssertionFailedError;
45	+	import junit.framework.Test;
46	+	import junit.framework.TestSuite;
47
48		public class CompletableFutureTest extends JSR166TestCase {
49
50		public static void main(String[] args) {
51	<	junit.textui.TestRunner.run(suite());
51	>	main(suite(), args);
52		}
53		public static Test suite() {
54		return new TestSuite(CompletableFutureTest.class);
#	Line 44 | Line 59 | public class CompletableFutureTest exten
59		void checkIncomplete(CompletableFuture<?> f) {
60		assertFalse(f.isDone());
61		assertFalse(f.isCancelled());
62	<	assertTrue(f.toString().contains("[Not completed]"));
62	>	assertTrue(f.toString().contains("Not completed"));
63		try {
64		assertNull(f.getNow(null));
65		} catch (Throwable fail) { threadUnexpectedException(fail); }
#	Line 57 | Line 72 | public class CompletableFutureTest exten
72		}
73
74		<T> void checkCompletedNormally(CompletableFuture<T> f, T value) {
75	<	try {
76	<	assertEquals(value, f.get(LONG_DELAY_MS, MILLISECONDS));
62	<	} catch (Throwable fail) { threadUnexpectedException(fail); }
75	>	checkTimedGet(f, value);
76	>
77		try {
78		assertEquals(value, f.join());
79		} catch (Throwable fail) { threadUnexpectedException(fail); }
#	Line 75 | Line 89 | public class CompletableFutureTest exten
89		assertTrue(f.toString().contains("[Completed normally]"));
90		}
91
92	<	void checkCompletedWithWrappedCFException(CompletableFuture<?> f) {
93	<	try {
94	<	f.get(LONG_DELAY_MS, MILLISECONDS);
95	<	shouldThrow();
96	<	} catch (ExecutionException success) {
97	<	assertTrue(success.getCause() instanceof CFException);
98	<	} catch (Throwable fail) { threadUnexpectedException(fail); }
99	<	try {
100	<	f.join();
101	<	shouldThrow();
102	<	} catch (CompletionException success) {
103	<	assertTrue(success.getCause() instanceof CFException);
104	<	}
105	<	try {
106	<	f.getNow(null);
107	<	shouldThrow();
108	<	} catch (CompletionException success) {
95	<	assertTrue(success.getCause() instanceof CFException);
92	>	/**
93	>	* Returns the "raw" internal exceptional completion of f,
94	>	* without any additional wrapping with CompletionException.
95	>	*/
96	>	<U> Throwable exceptionalCompletion(CompletableFuture<U> f) {
97	>	// handle (and whenComplete) can distinguish between "direct"
98	>	// and "wrapped" exceptional completion
99	>	return f.handle((U u, Throwable t) -> t).join();
100	>	}
101	>
102	>	void checkCompletedExceptionally(CompletableFuture<?> f,
103	>	boolean wrapped,
104	>	Consumer<Throwable> checker) {
105	>	Throwable cause = exceptionalCompletion(f);
106	>	if (wrapped) {
107	>	assertTrue(cause instanceof CompletionException);
108	>	cause = cause.getCause();
109		}
110	<	try {
98	<	f.get();
99	<	shouldThrow();
100	<	} catch (ExecutionException success) {
101	<	assertTrue(success.getCause() instanceof CFException);
102	<	} catch (Throwable fail) { threadUnexpectedException(fail); }
103	<	assertTrue(f.isDone());
104	<	assertFalse(f.isCancelled());
105	<	assertTrue(f.toString().contains("[Completed exceptionally]"));
106	<	}
110	>	checker.accept(cause);
111
112	<	<U> void checkCompletedExceptionallyWithRootCause(CompletableFuture<U> f,
109	<	Throwable ex) {
112	>	long startTime = System.nanoTime();
113		try {
114		f.get(LONG_DELAY_MS, MILLISECONDS);
115		shouldThrow();
116		} catch (ExecutionException success) {
117	<	assertSame(ex, success.getCause());
117	>	assertSame(cause, success.getCause());
118		} catch (Throwable fail) { threadUnexpectedException(fail); }
119	+	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS / 2);
120	+
121		try {
122		f.join();
123		shouldThrow();
124		} catch (CompletionException success) {
125	<	assertSame(ex, success.getCause());
126	<	}
125	>	assertSame(cause, success.getCause());
126	>	} catch (Throwable fail) { threadUnexpectedException(fail); }
127	>
128		try {
129		f.getNow(null);
130		shouldThrow();
131		} catch (CompletionException success) {
132	<	assertSame(ex, success.getCause());
133	<	}
132	>	assertSame(cause, success.getCause());
133	>	} catch (Throwable fail) { threadUnexpectedException(fail); }
134	>
135		try {
136		f.get();
137		shouldThrow();
138		} catch (ExecutionException success) {
139	<	assertSame(ex, success.getCause());
139	>	assertSame(cause, success.getCause());
140		} catch (Throwable fail) { threadUnexpectedException(fail); }
141
135	–	assertTrue(f.isDone());
142		assertFalse(f.isCancelled());
143	+	assertTrue(f.isDone());
144	+	assertTrue(f.isCompletedExceptionally());
145		assertTrue(f.toString().contains("[Completed exceptionally]"));
146		}
147
148	<	<U> void checkCompletedWithWrappedException(CompletableFuture<U> f,
149	<	Throwable ex) {
150	<	checkCompletedExceptionallyWithRootCause(f, ex);
143	<	try {
144	<	CompletableFuture<Throwable> spy = f.handle
145	<	((U u, Throwable t) -> t);
146	<	assertTrue(spy.join() instanceof CompletionException);
147	<	assertSame(ex, spy.join().getCause());
148	<	} catch (Throwable fail) { threadUnexpectedException(fail); }
148	>	void checkCompletedWithWrappedCFException(CompletableFuture<?> f) {
149	>	checkCompletedExceptionally(f, true,
150	>	(t) -> assertTrue(t instanceof CFException));
151		}
152
153	<	<U> void checkCompletedExceptionally(CompletableFuture<U> f, Throwable ex) {
154	<	checkCompletedExceptionallyWithRootCause(f, ex);
155	<	try {
156	<	CompletableFuture<Throwable> spy = f.handle
157	<	((U u, Throwable t) -> t);
158	<	assertSame(ex, spy.join());
159	<	} catch (Throwable fail) { threadUnexpectedException(fail); }
153	>	void checkCompletedWithWrappedCancellationException(CompletableFuture<?> f) {
154	>	checkCompletedExceptionally(f, true,
155	>	(t) -> assertTrue(t instanceof CancellationException));
156	>	}
157	>
158	>	void checkCompletedWithTimeoutException(CompletableFuture<?> f) {
159	>	checkCompletedExceptionally(f, false,
160	>	(t) -> assertTrue(t instanceof TimeoutException));
161	>	}
162	>
163	>	void checkCompletedWithWrappedException(CompletableFuture<?> f,
164	>	Throwable ex) {
165	>	checkCompletedExceptionally(f, true, (t) -> assertSame(t, ex));
166	>	}
167	>
168	>	void checkCompletedExceptionally(CompletableFuture<?> f, Throwable ex) {
169	>	checkCompletedExceptionally(f, false, (t) -> assertSame(t, ex));
170		}
171
172		void checkCancelled(CompletableFuture<?> f) {
173	+	long startTime = System.nanoTime();
174		try {
175		f.get(LONG_DELAY_MS, MILLISECONDS);
176		shouldThrow();
177		} catch (CancellationException success) {
178		} catch (Throwable fail) { threadUnexpectedException(fail); }
179	+	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS / 2);
180	+
181		try {
182		f.join();
183		shouldThrow();
#	Line 176 | Line 191 | public class CompletableFutureTest exten
191		shouldThrow();
192		} catch (CancellationException success) {
193		} catch (Throwable fail) { threadUnexpectedException(fail); }
179	–	assertTrue(f.isDone());
180	–	assertTrue(f.isCompletedExceptionally());
181	–	assertTrue(f.isCancelled());
182	–	assertTrue(f.toString().contains("[Completed exceptionally]"));
183	–	}
194
195	<	void checkCompletedWithWrappedCancellationException(CompletableFuture<?> f) {
196	<	try {
187	<	f.get(LONG_DELAY_MS, MILLISECONDS);
188	<	shouldThrow();
189	<	} catch (ExecutionException success) {
190	<	assertTrue(success.getCause() instanceof CancellationException);
191	<	} catch (Throwable fail) { threadUnexpectedException(fail); }
192	<	try {
193	<	f.join();
194	<	shouldThrow();
195	<	} catch (CompletionException success) {
196	<	assertTrue(success.getCause() instanceof CancellationException);
197	<	}
198	<	try {
199	<	f.getNow(null);
200	<	shouldThrow();
201	<	} catch (CompletionException success) {
202	<	assertTrue(success.getCause() instanceof CancellationException);
203	<	}
204	<	try {
205	<	f.get();
206	<	shouldThrow();
207	<	} catch (ExecutionException success) {
208	<	assertTrue(success.getCause() instanceof CancellationException);
209	<	} catch (Throwable fail) { threadUnexpectedException(fail); }
195	>	assertTrue(exceptionalCompletion(f) instanceof CancellationException);
196	>
197		assertTrue(f.isDone());
211	–	assertFalse(f.isCancelled());
198		assertTrue(f.isCompletedExceptionally());
199	+	assertTrue(f.isCancelled());
200		assertTrue(f.toString().contains("[Completed exceptionally]"));
201		}
202
#	Line 257 | Line 244 | public class CompletableFutureTest exten
244		{
245		CompletableFuture<Integer> f = new CompletableFuture<>();
246		checkIncomplete(f);
247	<	assertTrue(f.cancel(true));
248	<	assertTrue(f.cancel(true));
247	>	assertTrue(f.cancel(mayInterruptIfRunning));
248	>	assertTrue(f.cancel(mayInterruptIfRunning));
249	>	assertTrue(f.cancel(!mayInterruptIfRunning));
250		checkCancelled(f);
251		}}
252
#	Line 530 | Line 518 | public class CompletableFutureTest exten
518		}
519		}
520
533	–
521		class CompletableFutureInc extends CheckedIntegerAction
522		implements Function<Integer, CompletableFuture<Integer>>
523		{
#	Line 569 | Line 556 | public class CompletableFutureTest exten
556		}
557		}
558
559	+	static final boolean defaultExecutorIsCommonPool
560	+	= ForkJoinPool.getCommonPoolParallelism() > 1;
561	+
562		/**
563		* Permits the testing of parallel code for the 3 different
564		* execution modes without copy/pasting all the test methods.
565		*/
566		enum ExecutionMode {
567	<	DEFAULT {
567	>	SYNC {
568		public void checkExecutionMode() {
569		assertFalse(ThreadExecutor.startedCurrentThread());
570		assertNull(ForkJoinTask.getPool());
#	Line 650 | Line 640 | public class CompletableFutureTest exten
640
641		ASYNC {
642		public void checkExecutionMode() {
643	<	assertSame(ForkJoinPool.commonPool(),
644	<	ForkJoinTask.getPool());
643	>	assertEquals(defaultExecutorIsCommonPool,
644	>	(ForkJoinPool.commonPool() == ForkJoinTask.getPool()));
645		}
646		public CompletableFuture<Void> runAsync(Runnable a) {
647		return CompletableFuture.runAsync(a);
#	Line 850 | Line 840 | public class CompletableFutureTest exten
840		if (!createIncomplete) assertTrue(f.complete(v1));
841		final CompletableFuture<Integer> g = f.exceptionally
842		((Throwable t) -> {
853	–	// Should not be called
843		a.getAndIncrement();
844	<	throw new AssertionError();
844	>	threadFail("should not be called");
845	>	return null;            // unreached
846		});
847		if (createIncomplete) assertTrue(f.complete(v1));
848
#	Line 875 | Line 865 | public class CompletableFutureTest exten
865		if (!createIncomplete) f.completeExceptionally(ex);
866		final CompletableFuture<Integer> g = f.exceptionally
867		((Throwable t) -> {
868	<	ExecutionMode.DEFAULT.checkExecutionMode();
868	>	ExecutionMode.SYNC.checkExecutionMode();
869		threadAssertSame(t, ex);
870		a.getAndIncrement();
871		return v1;
#	Line 886 | Line 876 | public class CompletableFutureTest exten
876		assertEquals(1, a.get());
877		}}
878
879	+	/**
880	+	* If an "exceptionally action" throws an exception, it completes
881	+	* exceptionally with that exception
882	+	*/
883		public void testExceptionally_exceptionalCompletionActionFailed() {
884		for (boolean createIncomplete : new boolean[] { true, false })
891	–	for (Integer v1 : new Integer[] { 1, null })
885		{
886		final AtomicInteger a = new AtomicInteger(0);
887		final CFException ex1 = new CFException();
#	Line 897 | Line 890 | public class CompletableFutureTest exten
890		if (!createIncomplete) f.completeExceptionally(ex1);
891		final CompletableFuture<Integer> g = f.exceptionally
892		((Throwable t) -> {
893	<	ExecutionMode.DEFAULT.checkExecutionMode();
893	>	ExecutionMode.SYNC.checkExecutionMode();
894		threadAssertSame(t, ex1);
895		a.getAndIncrement();
896		throw ex2;
#	Line 905 | Line 898 | public class CompletableFutureTest exten
898		if (createIncomplete) f.completeExceptionally(ex1);
899
900		checkCompletedWithWrappedException(g, ex2);
901	+	checkCompletedExceptionally(f, ex1);
902		assertEquals(1, a.get());
903		}}
904
#	Line 912 | Line 906 | public class CompletableFutureTest exten
906		* whenComplete action executes on normal completion, propagating
907		* source result.
908		*/
909	<	public void testWhenComplete_normalCompletion1() {
909	>	public void testWhenComplete_normalCompletion() {
910		for (ExecutionMode m : ExecutionMode.values())
911		for (boolean createIncomplete : new boolean[] { true, false })
912		for (Integer v1 : new Integer[] { 1, null })
#	Line 922 | Line 916 | public class CompletableFutureTest exten
916		if (!createIncomplete) assertTrue(f.complete(v1));
917		final CompletableFuture<Integer> g = m.whenComplete
918		(f,
919	<	(Integer x, Throwable t) -> {
919	>	(Integer result, Throwable t) -> {
920		m.checkExecutionMode();
921	<	threadAssertSame(x, v1);
921	>	threadAssertSame(result, v1);
922		threadAssertNull(t);
923		a.getAndIncrement();
924		});
#	Line 942 | Line 936 | public class CompletableFutureTest exten
936		public void testWhenComplete_exceptionalCompletion() {
937		for (ExecutionMode m : ExecutionMode.values())
938		for (boolean createIncomplete : new boolean[] { true, false })
945	–	for (Integer v1 : new Integer[] { 1, null })
939		{
940		final AtomicInteger a = new AtomicInteger(0);
941		final CFException ex = new CFException();
#	Line 950 | Line 943 | public class CompletableFutureTest exten
943		if (!createIncomplete) f.completeExceptionally(ex);
944		final CompletableFuture<Integer> g = m.whenComplete
945		(f,
946	<	(Integer x, Throwable t) -> {
946	>	(Integer result, Throwable t) -> {
947		m.checkExecutionMode();
948	<	threadAssertNull(x);
948	>	threadAssertNull(result);
949		threadAssertSame(t, ex);
950		a.getAndIncrement();
951		});
#	Line 977 | Line 970 | public class CompletableFutureTest exten
970		if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
971		final CompletableFuture<Integer> g = m.whenComplete
972		(f,
973	<	(Integer x, Throwable t) -> {
973	>	(Integer result, Throwable t) -> {
974		m.checkExecutionMode();
975	<	threadAssertNull(x);
975	>	threadAssertNull(result);
976		threadAssertTrue(t instanceof CancellationException);
977		a.getAndIncrement();
978		});
#	Line 994 | Line 987 | public class CompletableFutureTest exten
987		* If a whenComplete action throws an exception when triggered by
988		* a normal completion, it completes exceptionally
989		*/
990	<	public void testWhenComplete_actionFailed() {
990	>	public void testWhenComplete_sourceCompletedNormallyActionFailed() {
991		for (boolean createIncomplete : new boolean[] { true, false })
992		for (ExecutionMode m : ExecutionMode.values())
993		for (Integer v1 : new Integer[] { 1, null })
#	Line 1005 | Line 998 | public class CompletableFutureTest exten
998		if (!createIncomplete) assertTrue(f.complete(v1));
999		final CompletableFuture<Integer> g = m.whenComplete
1000		(f,
1001	<	(Integer x, Throwable t) -> {
1001	>	(Integer result, Throwable t) -> {
1002		m.checkExecutionMode();
1003	<	threadAssertSame(x, v1);
1003	>	threadAssertSame(result, v1);
1004		threadAssertNull(t);
1005		a.getAndIncrement();
1006		throw ex;
#	Line 1022 | Line 1015 | public class CompletableFutureTest exten
1015		/**
1016		* If a whenComplete action throws an exception when triggered by
1017		* a source completion that also throws an exception, the source
1018	<	* exception takes precedence.
1018	>	* exception takes precedence (unlike handle)
1019		*/
1020	<	public void testWhenComplete_actionFailedSourceFailed() {
1020	>	public void testWhenComplete_sourceFailedActionFailed() {
1021		for (boolean createIncomplete : new boolean[] { true, false })
1022		for (ExecutionMode m : ExecutionMode.values())
1030	–	for (Integer v1 : new Integer[] { 1, null })
1023		{
1024		final AtomicInteger a = new AtomicInteger(0);
1025		final CFException ex1 = new CFException();
#	Line 1037 | Line 1029 | public class CompletableFutureTest exten
1029		if (!createIncomplete) f.completeExceptionally(ex1);
1030		final CompletableFuture<Integer> g = m.whenComplete
1031		(f,
1032	<	(Integer x, Throwable t) -> {
1032	>	(Integer result, Throwable t) -> {
1033		m.checkExecutionMode();
1034		threadAssertSame(t, ex1);
1035	<	threadAssertNull(x);
1035	>	threadAssertNull(result);
1036		a.getAndIncrement();
1037		throw ex2;
1038		});
#	Line 1048 | Line 1040 | public class CompletableFutureTest exten
1040
1041		checkCompletedWithWrappedException(g, ex1);
1042		checkCompletedExceptionally(f, ex1);
1043	+	if (testImplementationDetails) {
1044	+	assertEquals(1, ex1.getSuppressed().length);
1045	+	assertSame(ex2, ex1.getSuppressed()[0]);
1046	+	}
1047		assertEquals(1, a.get());
1048		}}
1049
#	Line 1065 | Line 1061 | public class CompletableFutureTest exten
1061		if (!createIncomplete) assertTrue(f.complete(v1));
1062		final CompletableFuture<Integer> g = m.handle
1063		(f,
1064	<	(Integer x, Throwable t) -> {
1064	>	(Integer result, Throwable t) -> {
1065		m.checkExecutionMode();
1066	<	threadAssertSame(x, v1);
1066	>	threadAssertSame(result, v1);
1067		threadAssertNull(t);
1068		a.getAndIncrement();
1069		return inc(v1);
#	Line 1094 | Line 1090 | public class CompletableFutureTest exten
1090		if (!createIncomplete) f.completeExceptionally(ex);
1091		final CompletableFuture<Integer> g = m.handle
1092		(f,
1093	<	(Integer x, Throwable t) -> {
1093	>	(Integer result, Throwable t) -> {
1094		m.checkExecutionMode();
1095	<	threadAssertNull(x);
1095	>	threadAssertNull(result);
1096		threadAssertSame(t, ex);
1097		a.getAndIncrement();
1098		return v1;
#	Line 1123 | Line 1119 | public class CompletableFutureTest exten
1119		if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
1120		final CompletableFuture<Integer> g = m.handle
1121		(f,
1122	<	(Integer x, Throwable t) -> {
1122	>	(Integer result, Throwable t) -> {
1123		m.checkExecutionMode();
1124	<	threadAssertNull(x);
1124	>	threadAssertNull(result);
1125		threadAssertTrue(t instanceof CancellationException);
1126		a.getAndIncrement();
1127		return v1;
#	Line 1138 | Line 1134 | public class CompletableFutureTest exten
1134		}}
1135
1136		/**
1137	<	* handle result completes exceptionally if action does
1137	>	* If a "handle action" throws an exception when triggered by
1138	>	* a normal completion, it completes exceptionally
1139		*/
1140	<	public void testHandle_sourceFailedActionFailed() {
1140	>	public void testHandle_sourceCompletedNormallyActionFailed() {
1141		for (ExecutionMode m : ExecutionMode.values())
1142		for (boolean createIncomplete : new boolean[] { true, false })
1143	+	for (Integer v1 : new Integer[] { 1, null })
1144		{
1145		final CompletableFuture<Integer> f = new CompletableFuture<>();
1146		final AtomicInteger a = new AtomicInteger(0);
1147	<	final CFException ex1 = new CFException();
1148	<	final CFException ex2 = new CFException();
1151	<	if (!createIncomplete) f.completeExceptionally(ex1);
1147	>	final CFException ex = new CFException();
1148	>	if (!createIncomplete) assertTrue(f.complete(v1));
1149		final CompletableFuture<Integer> g = m.handle
1150		(f,
1151	<	(Integer x, Throwable t) -> {
1151	>	(Integer result, Throwable t) -> {
1152		m.checkExecutionMode();
1153	<	threadAssertNull(x);
1154	<	threadAssertSame(ex1, t);
1153	>	threadAssertSame(result, v1);
1154	>	threadAssertNull(t);
1155		a.getAndIncrement();
1156	<	throw ex2;
1156	>	throw ex;
1157		});
1158	<	if (createIncomplete) f.completeExceptionally(ex1);
1158	>	if (createIncomplete) assertTrue(f.complete(v1));
1159
1160	<	checkCompletedWithWrappedException(g, ex2);
1161	<	checkCompletedExceptionally(f, ex1);
1160	>	checkCompletedWithWrappedException(g, ex);
1161	>	checkCompletedNormally(f, v1);
1162		assertEquals(1, a.get());
1163		}}
1164
1165	<	public void testHandle_sourceCompletedNormallyActionFailed() {
1166	<	for (ExecutionMode m : ExecutionMode.values())
1165	>	/**
1166	>	* If a "handle action" throws an exception when triggered by
1167	>	* a source completion that also throws an exception, the action
1168	>	* exception takes precedence (unlike whenComplete)
1169	>	*/
1170	>	public void testHandle_sourceFailedActionFailed() {
1171		for (boolean createIncomplete : new boolean[] { true, false })
1172	<	for (Integer v1 : new Integer[] { 1, null })
1172	>	for (ExecutionMode m : ExecutionMode.values())
1173		{
1173	–	final CompletableFuture<Integer> f = new CompletableFuture<>();
1174		final AtomicInteger a = new AtomicInteger(0);
1175	<	final CFException ex = new CFException();
1176	<	if (!createIncomplete) assertTrue(f.complete(v1));
1175	>	final CFException ex1 = new CFException();
1176	>	final CFException ex2 = new CFException();
1177	>	final CompletableFuture<Integer> f = new CompletableFuture<>();
1178	>
1179	>	if (!createIncomplete) f.completeExceptionally(ex1);
1180		final CompletableFuture<Integer> g = m.handle
1181		(f,
1182	<	(Integer x, Throwable t) -> {
1182	>	(Integer result, Throwable t) -> {
1183		m.checkExecutionMode();
1184	<	threadAssertSame(x, v1);
1185	<	threadAssertNull(t);
1184	>	threadAssertNull(result);
1185	>	threadAssertSame(ex1, t);
1186		a.getAndIncrement();
1187	<	throw ex;
1187	>	throw ex2;
1188		});
1189	<	if (createIncomplete) assertTrue(f.complete(v1));
1189	>	if (createIncomplete) f.completeExceptionally(ex1);
1190
1191	<	checkCompletedWithWrappedException(g, ex);
1192	<	checkCompletedNormally(f, v1);
1191	>	checkCompletedWithWrappedException(g, ex2);
1192	>	checkCompletedExceptionally(f, ex1);
1193		assertEquals(1, a.get());
1194		}}
1195
#	Line 1264 | Line 1267 | public class CompletableFutureTest exten
1267		*/
1268		public void testThenRun_normalCompletion() {
1269		for (ExecutionMode m : ExecutionMode.values())
1267	–	for (boolean createIncomplete : new boolean[] { true, false })
1270		for (Integer v1 : new Integer[] { 1, null })
1271		{
1272		final CompletableFuture<Integer> f = new CompletableFuture<>();
1273	<	final Noop r = new Noop(m);
1274	<	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	<	}
1273	>	final Noop[] rs = new Noop[6];
1274	>	for (int i = 0; i < rs.length; i++) rs[i] = new Noop(m);
1275
1276	<	checkCompletedNormally(g, null);
1276	>	final CompletableFuture<Void> h0 = m.thenRun(f, rs[0]);
1277	>	final CompletableFuture<Void> h1 = m.runAfterBoth(f, f, rs[1]);
1278	>	final CompletableFuture<Void> h2 = m.runAfterEither(f, f, rs[2]);
1279	>	checkIncomplete(h0);
1280	>	checkIncomplete(h1);
1281	>	checkIncomplete(h2);
1282	>	assertTrue(f.complete(v1));
1283	>	final CompletableFuture<Void> h3 = m.thenRun(f, rs[3]);
1284	>	final CompletableFuture<Void> h4 = m.runAfterBoth(f, f, rs[4]);
1285	>	final CompletableFuture<Void> h5 = m.runAfterEither(f, f, rs[5]);
1286	>
1287	>	checkCompletedNormally(h0, null);
1288	>	checkCompletedNormally(h1, null);
1289	>	checkCompletedNormally(h2, null);
1290	>	checkCompletedNormally(h3, null);
1291	>	checkCompletedNormally(h4, null);
1292	>	checkCompletedNormally(h5, null);
1293		checkCompletedNormally(f, v1);
1294	<	r.assertInvoked();
1294	>	for (Noop r : rs) r.assertInvoked();
1295		}}
1296
1297		/**
#	Line 1287 | Line 1300 | public class CompletableFutureTest exten
1300		*/
1301		public void testThenRun_exceptionalCompletion() {
1302		for (ExecutionMode m : ExecutionMode.values())
1290	–	for (boolean createIncomplete : new boolean[] { true, false })
1303		{
1304		final CFException ex = new CFException();
1305		final CompletableFuture<Integer> f = new CompletableFuture<>();
1306	<	final Noop r = new Noop(m);
1307	<	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	<	}
1306	>	final Noop[] rs = new Noop[6];
1307	>	for (int i = 0; i < rs.length; i++) rs[i] = new Noop(m);
1308
1309	<	checkCompletedWithWrappedException(g, ex);
1309	>	final CompletableFuture<Void> h0 = m.thenRun(f, rs[0]);
1310	>	final CompletableFuture<Void> h1 = m.runAfterBoth(f, f, rs[1]);
1311	>	final CompletableFuture<Void> h2 = m.runAfterEither(f, f, rs[2]);
1312	>	checkIncomplete(h0);
1313	>	checkIncomplete(h1);
1314	>	checkIncomplete(h2);
1315	>	assertTrue(f.completeExceptionally(ex));
1316	>	final CompletableFuture<Void> h3 = m.thenRun(f, rs[3]);
1317	>	final CompletableFuture<Void> h4 = m.runAfterBoth(f, f, rs[4]);
1318	>	final CompletableFuture<Void> h5 = m.runAfterEither(f, f, rs[5]);
1319	>
1320	>	checkCompletedWithWrappedException(h0, ex);
1321	>	checkCompletedWithWrappedException(h1, ex);
1322	>	checkCompletedWithWrappedException(h2, ex);
1323	>	checkCompletedWithWrappedException(h3, ex);
1324	>	checkCompletedWithWrappedException(h4, ex);
1325	>	checkCompletedWithWrappedException(h5, ex);
1326		checkCompletedExceptionally(f, ex);
1327	<	r.assertNotInvoked();
1327	>	for (Noop r : rs) r.assertNotInvoked();
1328		}}
1329
1330		/**
#	Line 1309 | Line 1332 | public class CompletableFutureTest exten
1332		*/
1333		public void testThenRun_sourceCancelled() {
1334		for (ExecutionMode m : ExecutionMode.values())
1312	–	for (boolean createIncomplete : new boolean[] { true, false })
1335		for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1336		{
1337		final CompletableFuture<Integer> f = new CompletableFuture<>();
1338	<	final Noop r = new Noop(m);
1339	<	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	<	}
1338	>	final Noop[] rs = new Noop[6];
1339	>	for (int i = 0; i < rs.length; i++) rs[i] = new Noop(m);
1340
1341	<	checkCompletedWithWrappedCancellationException(g);
1341	>	final CompletableFuture<Void> h0 = m.thenRun(f, rs[0]);
1342	>	final CompletableFuture<Void> h1 = m.runAfterBoth(f, f, rs[1]);
1343	>	final CompletableFuture<Void> h2 = m.runAfterEither(f, f, rs[2]);
1344	>	checkIncomplete(h0);
1345	>	checkIncomplete(h1);
1346	>	checkIncomplete(h2);
1347	>	assertTrue(f.cancel(mayInterruptIfRunning));
1348	>	final CompletableFuture<Void> h3 = m.thenRun(f, rs[3]);
1349	>	final CompletableFuture<Void> h4 = m.runAfterBoth(f, f, rs[4]);
1350	>	final CompletableFuture<Void> h5 = m.runAfterEither(f, f, rs[5]);
1351	>
1352	>	checkCompletedWithWrappedCancellationException(h0);
1353	>	checkCompletedWithWrappedCancellationException(h1);
1354	>	checkCompletedWithWrappedCancellationException(h2);
1355	>	checkCompletedWithWrappedCancellationException(h3);
1356	>	checkCompletedWithWrappedCancellationException(h4);
1357	>	checkCompletedWithWrappedCancellationException(h5);
1358		checkCancelled(f);
1359	<	r.assertNotInvoked();
1359	>	for (Noop r : rs) r.assertNotInvoked();
1360		}}
1361
1362		/**
#	Line 1331 | Line 1364 | public class CompletableFutureTest exten
1364		*/
1365		public void testThenRun_actionFailed() {
1366		for (ExecutionMode m : ExecutionMode.values())
1334	–	for (boolean createIncomplete : new boolean[] { true, false })
1367		for (Integer v1 : new Integer[] { 1, null })
1368		{
1369		final CompletableFuture<Integer> f = new CompletableFuture<>();
1370	<	final FailingRunnable r = new FailingRunnable(m);
1371	<	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	<	}
1370	>	final FailingRunnable[] rs = new FailingRunnable[6];
1371	>	for (int i = 0; i < rs.length; i++) rs[i] = new FailingRunnable(m);
1372
1373	<	checkCompletedWithWrappedCFException(g);
1373	>	final CompletableFuture<Void> h0 = m.thenRun(f, rs[0]);
1374	>	final CompletableFuture<Void> h1 = m.runAfterBoth(f, f, rs[1]);
1375	>	final CompletableFuture<Void> h2 = m.runAfterEither(f, f, rs[2]);
1376	>	assertTrue(f.complete(v1));
1377	>	final CompletableFuture<Void> h3 = m.thenRun(f, rs[3]);
1378	>	final CompletableFuture<Void> h4 = m.runAfterBoth(f, f, rs[4]);
1379	>	final CompletableFuture<Void> h5 = m.runAfterEither(f, f, rs[5]);
1380	>
1381	>	checkCompletedWithWrappedCFException(h0);
1382	>	checkCompletedWithWrappedCFException(h1);
1383	>	checkCompletedWithWrappedCFException(h2);
1384	>	checkCompletedWithWrappedCFException(h3);
1385	>	checkCompletedWithWrappedCFException(h4);
1386	>	checkCompletedWithWrappedCFException(h5);
1387		checkCompletedNormally(f, v1);
1388		}}
1389
#	Line 1352 | Line 1392 | public class CompletableFutureTest exten
1392		*/
1393		public void testThenApply_normalCompletion() {
1394		for (ExecutionMode m : ExecutionMode.values())
1355	–	for (boolean createIncomplete : new boolean[] { true, false })
1395		for (Integer v1 : new Integer[] { 1, null })
1396		{
1397		final CompletableFuture<Integer> f = new CompletableFuture<>();
1398	<	final IncFunction r = new IncFunction(m);
1399	<	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	<	}
1398	>	final IncFunction[] rs = new IncFunction[4];
1399	>	for (int i = 0; i < rs.length; i++) rs[i] = new IncFunction(m);
1400
1401	<	checkCompletedNormally(g, inc(v1));
1401	>	final CompletableFuture<Integer> h0 = m.thenApply(f, rs[0]);
1402	>	final CompletableFuture<Integer> h1 = m.applyToEither(f, f, rs[1]);
1403	>	checkIncomplete(h0);
1404	>	checkIncomplete(h1);
1405	>	assertTrue(f.complete(v1));
1406	>	final CompletableFuture<Integer> h2 = m.thenApply(f, rs[2]);
1407	>	final CompletableFuture<Integer> h3 = m.applyToEither(f, f, rs[3]);
1408	>
1409	>	checkCompletedNormally(h0, inc(v1));
1410	>	checkCompletedNormally(h1, inc(v1));
1411	>	checkCompletedNormally(h2, inc(v1));
1412	>	checkCompletedNormally(h3, inc(v1));
1413		checkCompletedNormally(f, v1);
1414	<	r.assertValue(inc(v1));
1414	>	for (IncFunction r : rs) r.assertValue(inc(v1));
1415		}}
1416
1417		/**
#	Line 1375 | Line 1420 | public class CompletableFutureTest exten
1420		*/
1421		public void testThenApply_exceptionalCompletion() {
1422		for (ExecutionMode m : ExecutionMode.values())
1378	–	for (boolean createIncomplete : new boolean[] { true, false })
1423		{
1424		final CFException ex = new CFException();
1425		final CompletableFuture<Integer> f = new CompletableFuture<>();
1426	<	final IncFunction r = new IncFunction(m);
1427	<	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	<	}
1426	>	final IncFunction[] rs = new IncFunction[4];
1427	>	for (int i = 0; i < rs.length; i++) rs[i] = new IncFunction(m);
1428
1429	<	checkCompletedWithWrappedException(g, ex);
1429	>	final CompletableFuture<Integer> h0 = m.thenApply(f, rs[0]);
1430	>	final CompletableFuture<Integer> h1 = m.applyToEither(f, f, rs[1]);
1431	>	assertTrue(f.completeExceptionally(ex));
1432	>	final CompletableFuture<Integer> h2 = m.thenApply(f, rs[2]);
1433	>	final CompletableFuture<Integer> h3 = m.applyToEither(f, f, rs[3]);
1434	>
1435	>	checkCompletedWithWrappedException(h0, ex);
1436	>	checkCompletedWithWrappedException(h1, ex);
1437	>	checkCompletedWithWrappedException(h2, ex);
1438	>	checkCompletedWithWrappedException(h3, ex);
1439		checkCompletedExceptionally(f, ex);
1440	<	r.assertNotInvoked();
1440	>	for (IncFunction r : rs) r.assertNotInvoked();
1441		}}
1442
1443		/**
#	Line 1397 | Line 1445 | public class CompletableFutureTest exten
1445		*/
1446		public void testThenApply_sourceCancelled() {
1447		for (ExecutionMode m : ExecutionMode.values())
1400	–	for (boolean createIncomplete : new boolean[] { true, false })
1448		for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1449		{
1450		final CompletableFuture<Integer> f = new CompletableFuture<>();
1451	<	final IncFunction r = new IncFunction(m);
1452	<	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	<	}
1451	>	final IncFunction[] rs = new IncFunction[4];
1452	>	for (int i = 0; i < rs.length; i++) rs[i] = new IncFunction(m);
1453
1454	<	checkCompletedWithWrappedCancellationException(g);
1454	>	final CompletableFuture<Integer> h0 = m.thenApply(f, rs[0]);
1455	>	final CompletableFuture<Integer> h1 = m.applyToEither(f, f, rs[1]);
1456	>	assertTrue(f.cancel(mayInterruptIfRunning));
1457	>	final CompletableFuture<Integer> h2 = m.thenApply(f, rs[2]);
1458	>	final CompletableFuture<Integer> h3 = m.applyToEither(f, f, rs[3]);
1459	>
1460	>	checkCompletedWithWrappedCancellationException(h0);
1461	>	checkCompletedWithWrappedCancellationException(h1);
1462	>	checkCompletedWithWrappedCancellationException(h2);
1463	>	checkCompletedWithWrappedCancellationException(h3);
1464		checkCancelled(f);
1465	<	r.assertNotInvoked();
1465	>	for (IncFunction r : rs) r.assertNotInvoked();
1466		}}
1467
1468		/**
#	Line 1419 | Line 1470 | public class CompletableFutureTest exten
1470		*/
1471		public void testThenApply_actionFailed() {
1472		for (ExecutionMode m : ExecutionMode.values())
1422	–	for (boolean createIncomplete : new boolean[] { true, false })
1473		for (Integer v1 : new Integer[] { 1, null })
1474		{
1475		final CompletableFuture<Integer> f = new CompletableFuture<>();
1476	<	final FailingFunction r = new FailingFunction(m);
1477	<	if (!createIncomplete) assertTrue(f.complete(v1));
1428	<	final CompletableFuture<Integer> g = m.thenApply(f, r);
1429	<	if (createIncomplete) {
1430	<	checkIncomplete(g);
1431	<	assertTrue(f.complete(v1));
1432	<	}
1476	>	final FailingFunction[] rs = new FailingFunction[4];
1477	>	for (int i = 0; i < rs.length; i++) rs[i] = new FailingFunction(m);
1478
1479	<	checkCompletedWithWrappedCFException(g);
1479	>	final CompletableFuture<Integer> h0 = m.thenApply(f, rs[0]);
1480	>	final CompletableFuture<Integer> h1 = m.applyToEither(f, f, rs[1]);
1481	>	assertTrue(f.complete(v1));
1482	>	final CompletableFuture<Integer> h2 = m.thenApply(f, rs[2]);
1483	>	final CompletableFuture<Integer> h3 = m.applyToEither(f, f, rs[3]);
1484	>
1485	>	checkCompletedWithWrappedCFException(h0);
1486	>	checkCompletedWithWrappedCFException(h1);
1487	>	checkCompletedWithWrappedCFException(h2);
1488	>	checkCompletedWithWrappedCFException(h3);
1489		checkCompletedNormally(f, v1);
1490		}}
1491
#	Line 1440 | Line 1494 | public class CompletableFutureTest exten
1494		*/
1495		public void testThenAccept_normalCompletion() {
1496		for (ExecutionMode m : ExecutionMode.values())
1443	–	for (boolean createIncomplete : new boolean[] { true, false })
1497		for (Integer v1 : new Integer[] { 1, null })
1498		{
1499		final CompletableFuture<Integer> f = new CompletableFuture<>();
1500	<	final NoopConsumer r = new NoopConsumer(m);
1501	<	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	<	}
1500	>	final NoopConsumer[] rs = new NoopConsumer[4];
1501	>	for (int i = 0; i < rs.length; i++) rs[i] = new NoopConsumer(m);
1502
1503	<	checkCompletedNormally(g, null);
1504	<	r.assertValue(v1);
1503	>	final CompletableFuture<Void> h0 = m.thenAccept(f, rs[0]);
1504	>	final CompletableFuture<Void> h1 = m.acceptEither(f, f, rs[1]);
1505	>	checkIncomplete(h0);
1506	>	checkIncomplete(h1);
1507	>	assertTrue(f.complete(v1));
1508	>	final CompletableFuture<Void> h2 = m.thenAccept(f, rs[2]);
1509	>	final CompletableFuture<Void> h3 = m.acceptEither(f, f, rs[3]);
1510	>
1511	>	checkCompletedNormally(h0, null);
1512	>	checkCompletedNormally(h1, null);
1513	>	checkCompletedNormally(h2, null);
1514	>	checkCompletedNormally(h3, null);
1515		checkCompletedNormally(f, v1);
1516	+	for (NoopConsumer r : rs) r.assertValue(v1);
1517		}}
1518
1519		/**
#	Line 1463 | Line 1522 | public class CompletableFutureTest exten
1522		*/
1523		public void testThenAccept_exceptionalCompletion() {
1524		for (ExecutionMode m : ExecutionMode.values())
1466	–	for (boolean createIncomplete : new boolean[] { true, false })
1525		{
1526		final CFException ex = new CFException();
1527		final CompletableFuture<Integer> f = new CompletableFuture<>();
1528	<	final NoopConsumer r = new NoopConsumer(m);
1529	<	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	<	}
1528	>	final NoopConsumer[] rs = new NoopConsumer[4];
1529	>	for (int i = 0; i < rs.length; i++) rs[i] = new NoopConsumer(m);
1530
1531	<	checkCompletedWithWrappedException(g, ex);
1531	>	final CompletableFuture<Void> h0 = m.thenAccept(f, rs[0]);
1532	>	final CompletableFuture<Void> h1 = m.acceptEither(f, f, rs[1]);
1533	>	assertTrue(f.completeExceptionally(ex));
1534	>	final CompletableFuture<Void> h2 = m.thenAccept(f, rs[2]);
1535	>	final CompletableFuture<Void> h3 = m.acceptEither(f, f, rs[3]);
1536	>
1537	>	checkCompletedWithWrappedException(h0, ex);
1538	>	checkCompletedWithWrappedException(h1, ex);
1539	>	checkCompletedWithWrappedException(h2, ex);
1540	>	checkCompletedWithWrappedException(h3, ex);
1541		checkCompletedExceptionally(f, ex);
1542	<	r.assertNotInvoked();
1542	>	for (NoopConsumer r : rs) r.assertNotInvoked();
1543		}}
1544
1545		/**
#	Line 1485 | Line 1547 | public class CompletableFutureTest exten
1547		*/
1548		public void testThenAccept_sourceCancelled() {
1549		for (ExecutionMode m : ExecutionMode.values())
1488	–	for (boolean createIncomplete : new boolean[] { true, false })
1550		for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1551		{
1552		final CompletableFuture<Integer> f = new CompletableFuture<>();
1553	<	final NoopConsumer r = new NoopConsumer(m);
1554	<	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	<	}
1553	>	final NoopConsumer[] rs = new NoopConsumer[4];
1554	>	for (int i = 0; i < rs.length; i++) rs[i] = new NoopConsumer(m);
1555
1556	<	checkCompletedWithWrappedCancellationException(g);
1556	>	final CompletableFuture<Void> h0 = m.thenAccept(f, rs[0]);
1557	>	final CompletableFuture<Void> h1 = m.acceptEither(f, f, rs[1]);
1558	>	assertTrue(f.cancel(mayInterruptIfRunning));
1559	>	final CompletableFuture<Void> h2 = m.thenAccept(f, rs[2]);
1560	>	final CompletableFuture<Void> h3 = m.acceptEither(f, f, rs[3]);
1561	>
1562	>	checkCompletedWithWrappedCancellationException(h0);
1563	>	checkCompletedWithWrappedCancellationException(h1);
1564	>	checkCompletedWithWrappedCancellationException(h2);
1565	>	checkCompletedWithWrappedCancellationException(h3);
1566		checkCancelled(f);
1567	<	r.assertNotInvoked();
1567	>	for (NoopConsumer r : rs) r.assertNotInvoked();
1568		}}
1569
1570		/**
#	Line 1507 | Line 1572 | public class CompletableFutureTest exten
1572		*/
1573		public void testThenAccept_actionFailed() {
1574		for (ExecutionMode m : ExecutionMode.values())
1510	–	for (boolean createIncomplete : new boolean[] { true, false })
1575		for (Integer v1 : new Integer[] { 1, null })
1576		{
1577		final CompletableFuture<Integer> f = new CompletableFuture<>();
1578	<	final FailingConsumer r = new FailingConsumer(m);
1579	<	if (!createIncomplete) f.complete(v1);
1516	<	final CompletableFuture<Void> g = m.thenAccept(f, r);
1517	<	if (createIncomplete) {
1518	<	checkIncomplete(g);
1519	<	f.complete(v1);
1520	<	}
1578	>	final FailingConsumer[] rs = new FailingConsumer[4];
1579	>	for (int i = 0; i < rs.length; i++) rs[i] = new FailingConsumer(m);
1580
1581	<	checkCompletedWithWrappedCFException(g);
1581	>	final CompletableFuture<Void> h0 = m.thenAccept(f, rs[0]);
1582	>	final CompletableFuture<Void> h1 = m.acceptEither(f, f, rs[1]);
1583	>	assertTrue(f.complete(v1));
1584	>	final CompletableFuture<Void> h2 = m.thenAccept(f, rs[2]);
1585	>	final CompletableFuture<Void> h3 = m.acceptEither(f, f, rs[3]);
1586	>
1587	>	checkCompletedWithWrappedCFException(h0);
1588	>	checkCompletedWithWrappedCFException(h1);
1589	>	checkCompletedWithWrappedCFException(h2);
1590	>	checkCompletedWithWrappedCFException(h3);
1591		checkCompletedNormally(f, v1);
1592		}}
1593
#	Line 1529 | Line 1597 | public class CompletableFutureTest exten
1597		*/
1598		public void testThenCombine_normalCompletion() {
1599		for (ExecutionMode m : ExecutionMode.values())
1532	–	for (boolean createIncomplete : new boolean[] { true, false })
1600		for (boolean fFirst : new boolean[] { true, false })
1601		for (Integer v1 : new Integer[] { 1, null })
1602		for (Integer v2 : new Integer[] { 2, null })
1603		{
1604		final CompletableFuture<Integer> f = new CompletableFuture<>();
1605		final CompletableFuture<Integer> g = new CompletableFuture<>();
1606	<	final SubtractFunction r = new SubtractFunction(m);
1606	>	final SubtractFunction[] rs = new SubtractFunction[6];
1607	>	for (int i = 0; i < rs.length; i++) rs[i] = new SubtractFunction(m);
1608
1609	<	assertTrue(fFirst ? f.complete(v1) : g.complete(v2));
1610	<	if (!createIncomplete)
1611	<	assertTrue(!fFirst ? f.complete(v1) : g.complete(v2));
1612	<	final CompletableFuture<Integer> h = m.thenCombine(f, g, r);
1613	<	if (createIncomplete) {
1614	<	checkIncomplete(h);
1615	<	r.assertNotInvoked();
1616	<	assertTrue(!fFirst ? f.complete(v1) : g.complete(v2));
1617	<	}
1609	>	final CompletableFuture<Integer> fst =  fFirst ? f : g;
1610	>	final CompletableFuture<Integer> snd = !fFirst ? f : g;
1611	>	final Integer w1 =  fFirst ? v1 : v2;
1612	>	final Integer w2 = !fFirst ? v1 : v2;
1613	>
1614	>	final CompletableFuture<Integer> h0 = m.thenCombine(f, g, rs[0]);
1615	>	final CompletableFuture<Integer> h1 = m.thenCombine(fst, fst, rs[1]);
1616	>	assertTrue(fst.complete(w1));
1617	>	final CompletableFuture<Integer> h2 = m.thenCombine(f, g, rs[2]);
1618	>	final CompletableFuture<Integer> h3 = m.thenCombine(fst, fst, rs[3]);
1619	>	checkIncomplete(h0); rs[0].assertNotInvoked();
1620	>	checkIncomplete(h2); rs[2].assertNotInvoked();
1621	>	checkCompletedNormally(h1, subtract(w1, w1));
1622	>	checkCompletedNormally(h3, subtract(w1, w1));
1623	>	rs[1].assertValue(subtract(w1, w1));
1624	>	rs[3].assertValue(subtract(w1, w1));
1625	>	assertTrue(snd.complete(w2));
1626	>	final CompletableFuture<Integer> h4 = m.thenCombine(f, g, rs[4]);
1627	>
1628	>	checkCompletedNormally(h0, subtract(v1, v2));
1629	>	checkCompletedNormally(h2, subtract(v1, v2));
1630	>	checkCompletedNormally(h4, subtract(v1, v2));
1631	>	rs[0].assertValue(subtract(v1, v2));
1632	>	rs[2].assertValue(subtract(v1, v2));
1633	>	rs[4].assertValue(subtract(v1, v2));
1634
1551	–	checkCompletedNormally(h, subtract(v1, v2));
1635		checkCompletedNormally(f, v1);
1636		checkCompletedNormally(g, v2);
1554	–	r.assertValue(subtract(v1, v2));
1637		}}
1638
1639		/**
1640		* thenCombine result completes exceptionally after exceptional
1641		* completion of either source
1642		*/
1643	<	public void testThenCombine_exceptionalCompletion() {
1643	>	public void testThenCombine_exceptionalCompletion() throws Throwable {
1644		for (ExecutionMode m : ExecutionMode.values())
1563	–	for (boolean createIncomplete : new boolean[] { true, false })
1645		for (boolean fFirst : new boolean[] { true, false })
1646	+	for (boolean failFirst : new boolean[] { true, false })
1647		for (Integer v1 : new Integer[] { 1, null })
1648		{
1649		final CompletableFuture<Integer> f = new CompletableFuture<>();
1650		final CompletableFuture<Integer> g = new CompletableFuture<>();
1651		final CFException ex = new CFException();
1652	<	final SubtractFunction r = new SubtractFunction(m);
1653	<
1654	<	assertTrue((fFirst ? f : g).complete(v1));
1655	<	if (!createIncomplete)
1656	<	assertTrue((!fFirst ? f : g).completeExceptionally(ex));
1657	<	final CompletableFuture<Integer> h = m.thenCombine(f, g, r);
1658	<	if (createIncomplete) {
1659	<	checkIncomplete(h);
1660	<	assertTrue((!fFirst ? f : g).completeExceptionally(ex));
1661	<	}
1652	>	final SubtractFunction r1 = new SubtractFunction(m);
1653	>	final SubtractFunction r2 = new SubtractFunction(m);
1654	>	final SubtractFunction r3 = new SubtractFunction(m);
1655	>
1656	>	final CompletableFuture<Integer> fst =  fFirst ? f : g;
1657	>	final CompletableFuture<Integer> snd = !fFirst ? f : g;
1658	>	final Callable<Boolean> complete1 = failFirst ?
1659	>	() -> fst.completeExceptionally(ex) :
1660	>	() -> fst.complete(v1);
1661	>	final Callable<Boolean> complete2 = failFirst ?
1662	>	() -> snd.complete(v1) :
1663	>	() -> snd.completeExceptionally(ex);
1664	>
1665	>	final CompletableFuture<Integer> h1 = m.thenCombine(f, g, r1);
1666	>	assertTrue(complete1.call());
1667	>	final CompletableFuture<Integer> h2 = m.thenCombine(f, g, r2);
1668	>	checkIncomplete(h1);
1669	>	checkIncomplete(h2);
1670	>	assertTrue(complete2.call());
1671	>	final CompletableFuture<Integer> h3 = m.thenCombine(f, g, r3);
1672
1673	<	checkCompletedWithWrappedException(h, ex);
1674	<	r.assertNotInvoked();
1675	<	checkCompletedNormally(fFirst ? f : g, v1);
1676	<	checkCompletedExceptionally(!fFirst ? f : g, ex);
1673	>	checkCompletedWithWrappedException(h1, ex);
1674	>	checkCompletedWithWrappedException(h2, ex);
1675	>	checkCompletedWithWrappedException(h3, ex);
1676	>	r1.assertNotInvoked();
1677	>	r2.assertNotInvoked();
1678	>	r3.assertNotInvoked();
1679	>	checkCompletedNormally(failFirst ? snd : fst, v1);
1680	>	checkCompletedExceptionally(failFirst ? fst : snd, ex);
1681		}}
1682
1683		/**
1684		* thenCombine result completes exceptionally if either source cancelled
1685		*/
1686	<	public void testThenCombine_sourceCancelled() {
1686	>	public void testThenCombine_sourceCancelled() throws Throwable {
1687		for (ExecutionMode m : ExecutionMode.values())
1688		for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1593	–	for (boolean createIncomplete : new boolean[] { true, false })
1689		for (boolean fFirst : new boolean[] { true, false })
1690	+	for (boolean failFirst : new boolean[] { true, false })
1691		for (Integer v1 : new Integer[] { 1, null })
1692		{
1693		final CompletableFuture<Integer> f = new CompletableFuture<>();
1694		final CompletableFuture<Integer> g = new CompletableFuture<>();
1695	<	final SubtractFunction r = new SubtractFunction(m);
1695	>	final SubtractFunction r1 = new SubtractFunction(m);
1696	>	final SubtractFunction r2 = new SubtractFunction(m);
1697	>	final SubtractFunction r3 = new SubtractFunction(m);
1698
1699	<	assertTrue((fFirst ? f : g).complete(v1));
1700	<	if (!createIncomplete)
1701	<	assertTrue((!fFirst ? f : g).cancel(mayInterruptIfRunning));
1702	<	final CompletableFuture<Integer> h = m.thenCombine(f, g, r);
1703	<	if (createIncomplete) {
1704	<	checkIncomplete(h);
1705	<	assertTrue((!fFirst ? f : g).cancel(mayInterruptIfRunning));
1706	<	}
1699	>	final CompletableFuture<Integer> fst =  fFirst ? f : g;
1700	>	final CompletableFuture<Integer> snd = !fFirst ? f : g;
1701	>	final Callable<Boolean> complete1 = failFirst ?
1702	>	() -> fst.cancel(mayInterruptIfRunning) :
1703	>	() -> fst.complete(v1);
1704	>	final Callable<Boolean> complete2 = failFirst ?
1705	>	() -> snd.complete(v1) :
1706	>	() -> snd.cancel(mayInterruptIfRunning);
1707
1708	<	checkCompletedWithWrappedCancellationException(h);
1709	<	checkCancelled(!fFirst ? f : g);
1710	<	r.assertNotInvoked();
1711	<	checkCompletedNormally(fFirst ? f : g, v1);
1708	>	final CompletableFuture<Integer> h1 = m.thenCombine(f, g, r1);
1709	>	assertTrue(complete1.call());
1710	>	final CompletableFuture<Integer> h2 = m.thenCombine(f, g, r2);
1711	>	checkIncomplete(h1);
1712	>	checkIncomplete(h2);
1713	>	assertTrue(complete2.call());
1714	>	final CompletableFuture<Integer> h3 = m.thenCombine(f, g, r3);
1715	>
1716	>	checkCompletedWithWrappedCancellationException(h1);
1717	>	checkCompletedWithWrappedCancellationException(h2);
1718	>	checkCompletedWithWrappedCancellationException(h3);
1719	>	r1.assertNotInvoked();
1720	>	r2.assertNotInvoked();
1721	>	r3.assertNotInvoked();
1722	>	checkCompletedNormally(failFirst ? snd : fst, v1);
1723	>	checkCancelled(failFirst ? fst : snd);
1724		}}
1725
1726		/**
#	Line 1624 | Line 1734 | public class CompletableFutureTest exten
1734		{
1735		final CompletableFuture<Integer> f = new CompletableFuture<>();
1736		final CompletableFuture<Integer> g = new CompletableFuture<>();
1737	<	final FailingBiFunction r = new FailingBiFunction(m);
1738	<	final CompletableFuture<Integer> h = m.thenCombine(f, g, r);
1739	<
1740	<	assertTrue( fFirst ? f.complete(v1) : g.complete(v2));
1741	<	assertTrue(!fFirst ? f.complete(v1) : g.complete(v2));
1737	>	final FailingBiFunction r1 = new FailingBiFunction(m);
1738	>	final FailingBiFunction r2 = new FailingBiFunction(m);
1739	>	final FailingBiFunction r3 = new FailingBiFunction(m);
1740	>
1741	>	final CompletableFuture<Integer> fst =  fFirst ? f : g;
1742	>	final CompletableFuture<Integer> snd = !fFirst ? f : g;
1743	>	final Integer w1 =  fFirst ? v1 : v2;
1744	>	final Integer w2 = !fFirst ? v1 : v2;
1745	>
1746	>	final CompletableFuture<Integer> h1 = m.thenCombine(f, g, r1);
1747	>	assertTrue(fst.complete(w1));
1748	>	final CompletableFuture<Integer> h2 = m.thenCombine(f, g, r2);
1749	>	assertTrue(snd.complete(w2));
1750	>	final CompletableFuture<Integer> h3 = m.thenCombine(f, g, r3);
1751
1752	<	checkCompletedWithWrappedCFException(h);
1752	>	checkCompletedWithWrappedCFException(h1);
1753	>	checkCompletedWithWrappedCFException(h2);
1754	>	checkCompletedWithWrappedCFException(h3);
1755	>	r1.assertInvoked();
1756	>	r2.assertInvoked();
1757	>	r3.assertInvoked();
1758		checkCompletedNormally(f, v1);
1759		checkCompletedNormally(g, v2);
1760		}}
#	Line 1641 | Line 1765 | public class CompletableFutureTest exten
1765		*/
1766		public void testThenAcceptBoth_normalCompletion() {
1767		for (ExecutionMode m : ExecutionMode.values())
1644	–	for (boolean createIncomplete : new boolean[] { true, false })
1768		for (boolean fFirst : new boolean[] { true, false })
1769		for (Integer v1 : new Integer[] { 1, null })
1770		for (Integer v2 : new Integer[] { 2, null })
1771		{
1772		final CompletableFuture<Integer> f = new CompletableFuture<>();
1773		final CompletableFuture<Integer> g = new CompletableFuture<>();
1774	<	final SubtractAction r = new SubtractAction(m);
1775	<
1776	<	assertTrue(fFirst ? f.complete(v1) : g.complete(v2));
1777	<	if (!createIncomplete)
1778	<	assertTrue(!fFirst ? f.complete(v1) : g.complete(v2));
1779	<	final CompletableFuture<Void> h = m.thenAcceptBoth(f, g, r);
1780	<	if (createIncomplete) {
1781	<	checkIncomplete(h);
1782	<	r.assertNotInvoked();
1783	<	assertTrue(!fFirst ? f.complete(v1) : g.complete(v2));
1784	<	}
1774	>	final SubtractAction r1 = new SubtractAction(m);
1775	>	final SubtractAction r2 = new SubtractAction(m);
1776	>	final SubtractAction r3 = new SubtractAction(m);
1777	>
1778	>	final CompletableFuture<Integer> fst =  fFirst ? f : g;
1779	>	final CompletableFuture<Integer> snd = !fFirst ? f : g;
1780	>	final Integer w1 =  fFirst ? v1 : v2;
1781	>	final Integer w2 = !fFirst ? v1 : v2;
1782	>
1783	>	final CompletableFuture<Void> h1 = m.thenAcceptBoth(f, g, r1);
1784	>	assertTrue(fst.complete(w1));
1785	>	final CompletableFuture<Void> h2 = m.thenAcceptBoth(f, g, r2);
1786	>	checkIncomplete(h1);
1787	>	checkIncomplete(h2);
1788	>	r1.assertNotInvoked();
1789	>	r2.assertNotInvoked();
1790	>	assertTrue(snd.complete(w2));
1791	>	final CompletableFuture<Void> h3 = m.thenAcceptBoth(f, g, r3);
1792
1793	<	checkCompletedNormally(h, null);
1794	<	r.assertValue(subtract(v1, v2));
1793	>	checkCompletedNormally(h1, null);
1794	>	checkCompletedNormally(h2, null);
1795	>	checkCompletedNormally(h3, null);
1796	>	r1.assertValue(subtract(v1, v2));
1797	>	r2.assertValue(subtract(v1, v2));
1798	>	r3.assertValue(subtract(v1, v2));
1799		checkCompletedNormally(f, v1);
1800		checkCompletedNormally(g, v2);
1801		}}
#	Line 1670 | Line 1804 | public class CompletableFutureTest exten
1804		* thenAcceptBoth result completes exceptionally after exceptional
1805		* completion of either source
1806		*/
1807	<	public void testThenAcceptBoth_exceptionalCompletion() {
1807	>	public void testThenAcceptBoth_exceptionalCompletion() throws Throwable {
1808		for (ExecutionMode m : ExecutionMode.values())
1675	–	for (boolean createIncomplete : new boolean[] { true, false })
1809		for (boolean fFirst : new boolean[] { true, false })
1810	+	for (boolean failFirst : new boolean[] { true, false })
1811		for (Integer v1 : new Integer[] { 1, null })
1812		{
1813		final CompletableFuture<Integer> f = new CompletableFuture<>();
1814		final CompletableFuture<Integer> g = new CompletableFuture<>();
1815		final CFException ex = new CFException();
1816	<	final SubtractAction r = new SubtractAction(m);
1817	<
1818	<	assertTrue((fFirst ? f : g).complete(v1));
1819	<	if (!createIncomplete)
1820	<	assertTrue((!fFirst ? f : g).completeExceptionally(ex));
1821	<	final CompletableFuture<Void> h = m.thenAcceptBoth(f, g, r);
1822	<	if (createIncomplete) {
1823	<	checkIncomplete(h);
1824	<	assertTrue((!fFirst ? f : g).completeExceptionally(ex));
1825	<	}
1816	>	final SubtractAction r1 = new SubtractAction(m);
1817	>	final SubtractAction r2 = new SubtractAction(m);
1818	>	final SubtractAction r3 = new SubtractAction(m);
1819	>
1820	>	final CompletableFuture<Integer> fst =  fFirst ? f : g;
1821	>	final CompletableFuture<Integer> snd = !fFirst ? f : g;
1822	>	final Callable<Boolean> complete1 = failFirst ?
1823	>	() -> fst.completeExceptionally(ex) :
1824	>	() -> fst.complete(v1);
1825	>	final Callable<Boolean> complete2 = failFirst ?
1826	>	() -> snd.complete(v1) :
1827	>	() -> snd.completeExceptionally(ex);
1828	>
1829	>	final CompletableFuture<Void> h1 = m.thenAcceptBoth(f, g, r1);
1830	>	assertTrue(complete1.call());
1831	>	final CompletableFuture<Void> h2 = m.thenAcceptBoth(f, g, r2);
1832	>	checkIncomplete(h1);
1833	>	checkIncomplete(h2);
1834	>	assertTrue(complete2.call());
1835	>	final CompletableFuture<Void> h3 = m.thenAcceptBoth(f, g, r3);
1836
1837	<	checkCompletedWithWrappedException(h, ex);
1838	<	r.assertNotInvoked();
1839	<	checkCompletedNormally(fFirst ? f : g, v1);
1840	<	checkCompletedExceptionally(!fFirst ? f : g, ex);
1837	>	checkCompletedWithWrappedException(h1, ex);
1838	>	checkCompletedWithWrappedException(h2, ex);
1839	>	checkCompletedWithWrappedException(h3, ex);
1840	>	r1.assertNotInvoked();
1841	>	r2.assertNotInvoked();
1842	>	r3.assertNotInvoked();
1843	>	checkCompletedNormally(failFirst ? snd : fst, v1);
1844	>	checkCompletedExceptionally(failFirst ? fst : snd, ex);
1845		}}
1846
1847		/**
1848		* thenAcceptBoth result completes exceptionally if either source cancelled
1849		*/
1850	<	public void testThenAcceptBoth_sourceCancelled() {
1850	>	public void testThenAcceptBoth_sourceCancelled() throws Throwable {
1851		for (ExecutionMode m : ExecutionMode.values())
1852		for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1705	–	for (boolean createIncomplete : new boolean[] { true, false })
1853		for (boolean fFirst : new boolean[] { true, false })
1854	+	for (boolean failFirst : new boolean[] { true, false })
1855		for (Integer v1 : new Integer[] { 1, null })
1856		{
1857		final CompletableFuture<Integer> f = new CompletableFuture<>();
1858		final CompletableFuture<Integer> g = new CompletableFuture<>();
1859	<	final SubtractAction r = new SubtractAction(m);
1859	>	final SubtractAction r1 = new SubtractAction(m);
1860	>	final SubtractAction r2 = new SubtractAction(m);
1861	>	final SubtractAction r3 = new SubtractAction(m);
1862
1863	<	assertTrue((fFirst ? f : g).complete(v1));
1864	<	if (!createIncomplete)
1865	<	assertTrue((!fFirst ? f : g).cancel(mayInterruptIfRunning));
1866	<	final CompletableFuture<Void> h = m.thenAcceptBoth(f, g, r);
1867	<	if (createIncomplete) {
1868	<	checkIncomplete(h);
1869	<	assertTrue((!fFirst ? f : g).cancel(mayInterruptIfRunning));
1870	<	}
1863	>	final CompletableFuture<Integer> fst =  fFirst ? f : g;
1864	>	final CompletableFuture<Integer> snd = !fFirst ? f : g;
1865	>	final Callable<Boolean> complete1 = failFirst ?
1866	>	() -> fst.cancel(mayInterruptIfRunning) :
1867	>	() -> fst.complete(v1);
1868	>	final Callable<Boolean> complete2 = failFirst ?
1869	>	() -> snd.complete(v1) :
1870	>	() -> snd.cancel(mayInterruptIfRunning);
1871
1872	<	checkCompletedWithWrappedCancellationException(h);
1873	<	checkCancelled(!fFirst ? f : g);
1874	<	r.assertNotInvoked();
1875	<	checkCompletedNormally(fFirst ? f : g, v1);
1872	>	final CompletableFuture<Void> h1 = m.thenAcceptBoth(f, g, r1);
1873	>	assertTrue(complete1.call());
1874	>	final CompletableFuture<Void> h2 = m.thenAcceptBoth(f, g, r2);
1875	>	checkIncomplete(h1);
1876	>	checkIncomplete(h2);
1877	>	assertTrue(complete2.call());
1878	>	final CompletableFuture<Void> h3 = m.thenAcceptBoth(f, g, r3);
1879	>
1880	>	checkCompletedWithWrappedCancellationException(h1);
1881	>	checkCompletedWithWrappedCancellationException(h2);
1882	>	checkCompletedWithWrappedCancellationException(h3);
1883	>	r1.assertNotInvoked();
1884	>	r2.assertNotInvoked();
1885	>	r3.assertNotInvoked();
1886	>	checkCompletedNormally(failFirst ? snd : fst, v1);
1887	>	checkCancelled(failFirst ? fst : snd);
1888		}}
1889
1890		/**
#	Line 1736 | Line 1898 | public class CompletableFutureTest exten
1898		{
1899		final CompletableFuture<Integer> f = new CompletableFuture<>();
1900		final CompletableFuture<Integer> g = new CompletableFuture<>();
1901	<	final FailingBiConsumer r = new FailingBiConsumer(m);
1902	<	final CompletableFuture<Void> h = m.thenAcceptBoth(f, g, r);
1903	<
1904	<	assertTrue(fFirst ? f.complete(v1) : g.complete(v2));
1905	<	assertTrue(!fFirst ? f.complete(v1) : g.complete(v2));
1901	>	final FailingBiConsumer r1 = new FailingBiConsumer(m);
1902	>	final FailingBiConsumer r2 = new FailingBiConsumer(m);
1903	>	final FailingBiConsumer r3 = new FailingBiConsumer(m);
1904	>
1905	>	final CompletableFuture<Integer> fst =  fFirst ? f : g;
1906	>	final CompletableFuture<Integer> snd = !fFirst ? f : g;
1907	>	final Integer w1 =  fFirst ? v1 : v2;
1908	>	final Integer w2 = !fFirst ? v1 : v2;
1909	>
1910	>	final CompletableFuture<Void> h1 = m.thenAcceptBoth(f, g, r1);
1911	>	assertTrue(fst.complete(w1));
1912	>	final CompletableFuture<Void> h2 = m.thenAcceptBoth(f, g, r2);
1913	>	assertTrue(snd.complete(w2));
1914	>	final CompletableFuture<Void> h3 = m.thenAcceptBoth(f, g, r3);
1915
1916	<	checkCompletedWithWrappedCFException(h);
1916	>	checkCompletedWithWrappedCFException(h1);
1917	>	checkCompletedWithWrappedCFException(h2);
1918	>	checkCompletedWithWrappedCFException(h3);
1919	>	r1.assertInvoked();
1920	>	r2.assertInvoked();
1921	>	r3.assertInvoked();
1922		checkCompletedNormally(f, v1);
1923		checkCompletedNormally(g, v2);
1924		}}
#	Line 1753 | Line 1929 | public class CompletableFutureTest exten
1929		*/
1930		public void testRunAfterBoth_normalCompletion() {
1931		for (ExecutionMode m : ExecutionMode.values())
1756	–	for (boolean createIncomplete : new boolean[] { true, false })
1932		for (boolean fFirst : new boolean[] { true, false })
1933		for (Integer v1 : new Integer[] { 1, null })
1934		for (Integer v2 : new Integer[] { 2, null })
1935		{
1936		final CompletableFuture<Integer> f = new CompletableFuture<>();
1937		final CompletableFuture<Integer> g = new CompletableFuture<>();
1938	<	final Noop r = new Noop(m);
1939	<
1940	<	assertTrue(fFirst ? f.complete(v1) : g.complete(v2));
1941	<	if (!createIncomplete)
1942	<	assertTrue(!fFirst ? f.complete(v1) : g.complete(v2));
1943	<	final CompletableFuture<Void> h = m.runAfterBoth(f, g, r);
1944	<	if (createIncomplete) {
1945	<	checkIncomplete(h);
1946	<	r.assertNotInvoked();
1947	<	assertTrue(!fFirst ? f.complete(v1) : g.complete(v2));
1948	<	}
1938	>	final Noop r1 = new Noop(m);
1939	>	final Noop r2 = new Noop(m);
1940	>	final Noop r3 = new Noop(m);
1941	>
1942	>	final CompletableFuture<Integer> fst =  fFirst ? f : g;
1943	>	final CompletableFuture<Integer> snd = !fFirst ? f : g;
1944	>	final Integer w1 =  fFirst ? v1 : v2;
1945	>	final Integer w2 = !fFirst ? v1 : v2;
1946	>
1947	>	final CompletableFuture<Void> h1 = m.runAfterBoth(f, g, r1);
1948	>	assertTrue(fst.complete(w1));
1949	>	final CompletableFuture<Void> h2 = m.runAfterBoth(f, g, r2);
1950	>	checkIncomplete(h1);
1951	>	checkIncomplete(h2);
1952	>	r1.assertNotInvoked();
1953	>	r2.assertNotInvoked();
1954	>	assertTrue(snd.complete(w2));
1955	>	final CompletableFuture<Void> h3 = m.runAfterBoth(f, g, r3);
1956
1957	<	checkCompletedNormally(h, null);
1958	<	r.assertInvoked();
1957	>	checkCompletedNormally(h1, null);
1958	>	checkCompletedNormally(h2, null);
1959	>	checkCompletedNormally(h3, null);
1960	>	r1.assertInvoked();
1961	>	r2.assertInvoked();
1962	>	r3.assertInvoked();
1963		checkCompletedNormally(f, v1);
1964		checkCompletedNormally(g, v2);
1965		}}
#	Line 1782 | Line 1968 | public class CompletableFutureTest exten
1968		* runAfterBoth result completes exceptionally after exceptional
1969		* completion of either source
1970		*/
1971	<	public void testRunAfterBoth_exceptionalCompletion() {
1971	>	public void testRunAfterBoth_exceptionalCompletion() throws Throwable {
1972		for (ExecutionMode m : ExecutionMode.values())
1787	–	for (boolean createIncomplete : new boolean[] { true, false })
1973		for (boolean fFirst : new boolean[] { true, false })
1974	+	for (boolean failFirst : new boolean[] { true, false })
1975		for (Integer v1 : new Integer[] { 1, null })
1976		{
1977		final CompletableFuture<Integer> f = new CompletableFuture<>();
1978		final CompletableFuture<Integer> g = new CompletableFuture<>();
1979		final CFException ex = new CFException();
1980	<	final Noop r = new Noop(m);
1981	<
1982	<	assertTrue((fFirst ? f : g).complete(v1));
1983	<	if (!createIncomplete)
1984	<	assertTrue((!fFirst ? f : g).completeExceptionally(ex));
1985	<	final CompletableFuture<Void> h = m.runAfterBoth(f, g, r);
1986	<	if (createIncomplete) {
1987	<	checkIncomplete(h);
1988	<	assertTrue((!fFirst ? f : g).completeExceptionally(ex));
1989	<	}
1980	>	final Noop r1 = new Noop(m);
1981	>	final Noop r2 = new Noop(m);
1982	>	final Noop r3 = new Noop(m);
1983	>
1984	>	final CompletableFuture<Integer> fst =  fFirst ? f : g;
1985	>	final CompletableFuture<Integer> snd = !fFirst ? f : g;
1986	>	final Callable<Boolean> complete1 = failFirst ?
1987	>	() -> fst.completeExceptionally(ex) :
1988	>	() -> fst.complete(v1);
1989	>	final Callable<Boolean> complete2 = failFirst ?
1990	>	() -> snd.complete(v1) :
1991	>	() -> snd.completeExceptionally(ex);
1992	>
1993	>	final CompletableFuture<Void> h1 = m.runAfterBoth(f, g, r1);
1994	>	assertTrue(complete1.call());
1995	>	final CompletableFuture<Void> h2 = m.runAfterBoth(f, g, r2);
1996	>	checkIncomplete(h1);
1997	>	checkIncomplete(h2);
1998	>	assertTrue(complete2.call());
1999	>	final CompletableFuture<Void> h3 = m.runAfterBoth(f, g, r3);
2000
2001	<	checkCompletedWithWrappedException(h, ex);
2002	<	r.assertNotInvoked();
2003	<	checkCompletedNormally(fFirst ? f : g, v1);
2004	<	checkCompletedExceptionally(!fFirst ? f : g, ex);
2001	>	checkCompletedWithWrappedException(h1, ex);
2002	>	checkCompletedWithWrappedException(h2, ex);
2003	>	checkCompletedWithWrappedException(h3, ex);
2004	>	r1.assertNotInvoked();
2005	>	r2.assertNotInvoked();
2006	>	r3.assertNotInvoked();
2007	>	checkCompletedNormally(failFirst ? snd : fst, v1);
2008	>	checkCompletedExceptionally(failFirst ? fst : snd, ex);
2009		}}
2010
2011		/**
2012		* runAfterBoth result completes exceptionally if either source cancelled
2013		*/
2014	<	public void testRunAfterBoth_sourceCancelled() {
2014	>	public void testRunAfterBoth_sourceCancelled() throws Throwable {
2015		for (ExecutionMode m : ExecutionMode.values())
2016		for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1817	–	for (boolean createIncomplete : new boolean[] { true, false })
2017		for (boolean fFirst : new boolean[] { true, false })
2018	+	for (boolean failFirst : new boolean[] { true, false })
2019		for (Integer v1 : new Integer[] { 1, null })
2020		{
2021		final CompletableFuture<Integer> f = new CompletableFuture<>();
2022		final CompletableFuture<Integer> g = new CompletableFuture<>();
2023	<	final Noop r = new Noop(m);
2023	>	final Noop r1 = new Noop(m);
2024	>	final Noop r2 = new Noop(m);
2025	>	final Noop r3 = new Noop(m);
2026
2027	<	assertTrue((fFirst ? f : g).complete(v1));
2028	<	if (!createIncomplete)
2029	<	assertTrue((!fFirst ? f : g).cancel(mayInterruptIfRunning));
2030	<	final CompletableFuture<Void> h = m.runAfterBoth(f, g, r);
2031	<	if (createIncomplete) {
2032	<	checkIncomplete(h);
2033	<	assertTrue((!fFirst ? f : g).cancel(mayInterruptIfRunning));
2034	<	}
2027	>	final CompletableFuture<Integer> fst =  fFirst ? f : g;
2028	>	final CompletableFuture<Integer> snd = !fFirst ? f : g;
2029	>	final Callable<Boolean> complete1 = failFirst ?
2030	>	() -> fst.cancel(mayInterruptIfRunning) :
2031	>	() -> fst.complete(v1);
2032	>	final Callable<Boolean> complete2 = failFirst ?
2033	>	() -> snd.complete(v1) :
2034	>	() -> snd.cancel(mayInterruptIfRunning);
2035
2036	<	checkCompletedWithWrappedCancellationException(h);
2037	<	checkCancelled(!fFirst ? f : g);
2038	<	r.assertNotInvoked();
2039	<	checkCompletedNormally(fFirst ? f : g, v1);
2036	>	final CompletableFuture<Void> h1 = m.runAfterBoth(f, g, r1);
2037	>	assertTrue(complete1.call());
2038	>	final CompletableFuture<Void> h2 = m.runAfterBoth(f, g, r2);
2039	>	checkIncomplete(h1);
2040	>	checkIncomplete(h2);
2041	>	assertTrue(complete2.call());
2042	>	final CompletableFuture<Void> h3 = m.runAfterBoth(f, g, r3);
2043	>
2044	>	checkCompletedWithWrappedCancellationException(h1);
2045	>	checkCompletedWithWrappedCancellationException(h2);
2046	>	checkCompletedWithWrappedCancellationException(h3);
2047	>	r1.assertNotInvoked();
2048	>	r2.assertNotInvoked();
2049	>	r3.assertNotInvoked();
2050	>	checkCompletedNormally(failFirst ? snd : fst, v1);
2051	>	checkCancelled(failFirst ? fst : snd);
2052		}}
2053
2054		/**
#	Line 1850 | Line 2064 | public class CompletableFutureTest exten
2064		final CompletableFuture<Integer> g = new CompletableFuture<>();
2065		final FailingRunnable r1 = new FailingRunnable(m);
2066		final FailingRunnable r2 = new FailingRunnable(m);
2067	+	final FailingRunnable r3 = new FailingRunnable(m);
2068
2069	<	CompletableFuture<Void> h1 = m.runAfterBoth(f, g, r1);
2070	<	assertTrue(fFirst ? f.complete(v1) : g.complete(v2));
2071	<	assertTrue(!fFirst ? f.complete(v1) : g.complete(v2));
2072	<	CompletableFuture<Void> h2 = m.runAfterBoth(f, g, r2);
2069	>	final CompletableFuture<Integer> fst =  fFirst ? f : g;
2070	>	final CompletableFuture<Integer> snd = !fFirst ? f : g;
2071	>	final Integer w1 =  fFirst ? v1 : v2;
2072	>	final Integer w2 = !fFirst ? v1 : v2;
2073	>
2074	>	final CompletableFuture<Void> h1 = m.runAfterBoth(f, g, r1);
2075	>	assertTrue(fst.complete(w1));
2076	>	final CompletableFuture<Void> h2 = m.runAfterBoth(f, g, r2);
2077	>	assertTrue(snd.complete(w2));
2078	>	final CompletableFuture<Void> h3 = m.runAfterBoth(f, g, r3);
2079
2080		checkCompletedWithWrappedCFException(h1);
2081		checkCompletedWithWrappedCFException(h2);
2082	+	checkCompletedWithWrappedCFException(h3);
2083	+	r1.assertInvoked();
2084	+	r2.assertInvoked();
2085	+	r3.assertInvoked();
2086		checkCompletedNormally(f, v1);
2087		checkCompletedNormally(g, v2);
2088		}}
#	Line 2753 | Line 2978 | public class CompletableFutureTest exten
2978		checkCancelled(f);
2979		}}
2980
2981	+	/**
2982	+	* thenCompose result completes exceptionally if the result of the action does
2983	+	*/
2984	+	public void testThenCompose_actionReturnsFailingFuture() {
2985	+	for (ExecutionMode m : ExecutionMode.values())
2986	+	for (int order = 0; order < 6; order++)
2987	+	for (Integer v1 : new Integer[] { 1, null })
2988	+	{
2989	+	final CFException ex = new CFException();
2990	+	final CompletableFuture<Integer> f = new CompletableFuture<>();
2991	+	final CompletableFuture<Integer> g = new CompletableFuture<>();
2992	+	final CompletableFuture<Integer> h;
2993	+	// Test all permutations of orders
2994	+	switch (order) {
2995	+	case 0:
2996	+	assertTrue(f.complete(v1));
2997	+	assertTrue(g.completeExceptionally(ex));
2998	+	h = m.thenCompose(f, (x -> g));
2999	+	break;
3000	+	case 1:
3001	+	assertTrue(f.complete(v1));
3002	+	h = m.thenCompose(f, (x -> g));
3003	+	assertTrue(g.completeExceptionally(ex));
3004	+	break;
3005	+	case 2:
3006	+	assertTrue(g.completeExceptionally(ex));
3007	+	assertTrue(f.complete(v1));
3008	+	h = m.thenCompose(f, (x -> g));
3009	+	break;
3010	+	case 3:
3011	+	assertTrue(g.completeExceptionally(ex));
3012	+	h = m.thenCompose(f, (x -> g));
3013	+	assertTrue(f.complete(v1));
3014	+	break;
3015	+	case 4:
3016	+	h = m.thenCompose(f, (x -> g));
3017	+	assertTrue(f.complete(v1));
3018	+	assertTrue(g.completeExceptionally(ex));
3019	+	break;
3020	+	case 5:
3021	+	h = m.thenCompose(f, (x -> g));
3022	+	assertTrue(f.complete(v1));
3023	+	assertTrue(g.completeExceptionally(ex));
3024	+	break;
3025	+	default: throw new AssertionError();
3026	+	}
3027	+
3028	+	checkCompletedExceptionally(g, ex);
3029	+	checkCompletedWithWrappedException(h, ex);
3030	+	checkCompletedNormally(f, v1);
3031	+	}}
3032	+
3033		// other static methods
3034
3035		/**
#	Line 2769 | Line 3046 | public class CompletableFutureTest exten
3046		* when all components complete normally
3047		*/
3048		public void testAllOf_normal() throws Exception {
3049	<	for (int k = 1; k < 20; ++k) {
3049	>	for (int k = 1; k < 10; k++) {
3050		CompletableFuture<Integer>[] fs
3051		= (CompletableFuture<Integer>[]) new CompletableFuture[k];
3052	<	for (int i = 0; i < k; ++i)
3052	>	for (int i = 0; i < k; i++)
3053		fs[i] = new CompletableFuture<>();
3054		CompletableFuture<Void> f = CompletableFuture.allOf(fs);
3055	<	for (int i = 0; i < k; ++i) {
3055	>	for (int i = 0; i < k; i++) {
3056		checkIncomplete(f);
3057		checkIncomplete(CompletableFuture.allOf(fs));
3058		fs[i].complete(one);
#	Line 2786 | Line 3063 | public class CompletableFutureTest exten
3063		}
3064
3065		public void testAllOf_backwards() throws Exception {
3066	<	for (int k = 1; k < 20; ++k) {
3066	>	for (int k = 1; k < 10; k++) {
3067		CompletableFuture<Integer>[] fs
3068		= (CompletableFuture<Integer>[]) new CompletableFuture[k];
3069	<	for (int i = 0; i < k; ++i)
3069	>	for (int i = 0; i < k; i++)
3070		fs[i] = new CompletableFuture<>();
3071		CompletableFuture<Void> f = CompletableFuture.allOf(fs);
3072		for (int i = k - 1; i >= 0; i--) {
#	Line 2802 | Line 3079 | public class CompletableFutureTest exten
3079		}
3080		}
3081
3082	+	public void testAllOf_exceptional() throws Exception {
3083	+	for (int k = 1; k < 10; k++) {
3084	+	CompletableFuture<Integer>[] fs
3085	+	= (CompletableFuture<Integer>[]) new CompletableFuture[k];
3086	+	CFException ex = new CFException();
3087	+	for (int i = 0; i < k; i++)
3088	+	fs[i] = new CompletableFuture<>();
3089	+	CompletableFuture<Void> f = CompletableFuture.allOf(fs);
3090	+	for (int i = 0; i < k; i++) {
3091	+	checkIncomplete(f);
3092	+	checkIncomplete(CompletableFuture.allOf(fs));
3093	+	if (i != k / 2) {
3094	+	fs[i].complete(i);
3095	+	checkCompletedNormally(fs[i], i);
3096	+	} else {
3097	+	fs[i].completeExceptionally(ex);
3098	+	checkCompletedExceptionally(fs[i], ex);
3099	+	}
3100	+	}
3101	+	checkCompletedWithWrappedException(f, ex);
3102	+	checkCompletedWithWrappedException(CompletableFuture.allOf(fs), ex);
3103	+	}
3104	+	}
3105	+
3106		/**
3107		* anyOf(no component futures) returns an incomplete future
3108		*/
3109		public void testAnyOf_empty() throws Exception {
3110	+	for (Integer v1 : new Integer[] { 1, null })
3111	+	{
3112		CompletableFuture<Object> f = CompletableFuture.anyOf();
3113		checkIncomplete(f);
3114	<	}
3114	>
3115	>	f.complete(v1);
3116	>	checkCompletedNormally(f, v1);
3117	>	}}
3118
3119		/**
3120		* anyOf returns a future completed normally with a value when
3121		* a component future does
3122		*/
3123		public void testAnyOf_normal() throws Exception {
3124	<	for (int k = 0; k < 10; ++k) {
3124	>	for (int k = 0; k < 10; k++) {
3125		CompletableFuture[] fs = new CompletableFuture[k];
3126	<	for (int i = 0; i < k; ++i)
3126	>	for (int i = 0; i < k; i++)
3127		fs[i] = new CompletableFuture<>();
3128		CompletableFuture<Object> f = CompletableFuture.anyOf(fs);
3129		checkIncomplete(f);
3130	<	for (int i = 0; i < k; ++i) {
3131	<	fs[i].complete(one);
3132	<	checkCompletedNormally(f, one);
3133	<	checkCompletedNormally(CompletableFuture.anyOf(fs), one);
3130	>	for (int i = 0; i < k; i++) {
3131	>	fs[i].complete(i);
3132	>	checkCompletedNormally(f, 0);
3133	>	int x = (int) CompletableFuture.anyOf(fs).join();
3134	>	assertTrue(0 <= x && x <= i);
3135	>	}
3136	>	}
3137	>	}
3138	>	public void testAnyOf_normal_backwards() throws Exception {
3139	>	for (int k = 0; k < 10; k++) {
3140	>	CompletableFuture[] fs = new CompletableFuture[k];
3141	>	for (int i = 0; i < k; i++)
3142	>	fs[i] = new CompletableFuture<>();
3143	>	CompletableFuture<Object> f = CompletableFuture.anyOf(fs);
3144	>	checkIncomplete(f);
3145	>	for (int i = k - 1; i >= 0; i--) {
3146	>	fs[i].complete(i);
3147	>	checkCompletedNormally(f, k - 1);
3148	>	int x = (int) CompletableFuture.anyOf(fs).join();
3149	>	assertTrue(i <= x && x <= k - 1);
3150		}
3151		}
3152		}
#	Line 2833 | Line 3155 | public class CompletableFutureTest exten
3155		* anyOf result completes exceptionally when any component does.
3156		*/
3157		public void testAnyOf_exceptional() throws Exception {
3158	<	for (int k = 0; k < 10; ++k) {
3158	>	for (int k = 0; k < 10; k++) {
3159		CompletableFuture[] fs = new CompletableFuture[k];
3160	<	for (int i = 0; i < k; ++i)
3160	>	CFException[] exs = new CFException[k];
3161	>	for (int i = 0; i < k; i++) {
3162		fs[i] = new CompletableFuture<>();
3163	+	exs[i] = new CFException();
3164	+	}
3165		CompletableFuture<Object> f = CompletableFuture.anyOf(fs);
3166		checkIncomplete(f);
3167	<	for (int i = 0; i < k; ++i) {
3168	<	fs[i].completeExceptionally(new CFException());
3169	<	checkCompletedWithWrappedCFException(f);
3167	>	for (int i = 0; i < k; i++) {
3168	>	fs[i].completeExceptionally(exs[i]);
3169	>	checkCompletedWithWrappedException(f, exs[0]);
3170	>	checkCompletedWithWrappedCFException(CompletableFuture.anyOf(fs));
3171	>	}
3172	>	}
3173	>	}
3174	>
3175	>	public void testAnyOf_exceptional_backwards() throws Exception {
3176	>	for (int k = 0; k < 10; k++) {
3177	>	CompletableFuture[] fs = new CompletableFuture[k];
3178	>	CFException[] exs = new CFException[k];
3179	>	for (int i = 0; i < k; i++) {
3180	>	fs[i] = new CompletableFuture<>();
3181	>	exs[i] = new CFException();
3182	>	}
3183	>	CompletableFuture<Object> f = CompletableFuture.anyOf(fs);
3184	>	checkIncomplete(f);
3185	>	for (int i = k - 1; i >= 0; i--) {
3186	>	fs[i].completeExceptionally(exs[i]);
3187	>	checkCompletedWithWrappedException(f, exs[k - 1]);
3188		checkCompletedWithWrappedCFException(CompletableFuture.anyOf(fs));
3189		}
3190		}
#	Line 2854 | Line 3197 | public class CompletableFutureTest exten
3197		CompletableFuture<Integer> f = new CompletableFuture<>();
3198		CompletableFuture<Integer> g = new CompletableFuture<>();
3199		CompletableFuture<Integer> nullFuture = (CompletableFuture<Integer>)null;
2857	–	CompletableFuture<?> h;
3200		ThreadExecutor exec = new ThreadExecutor();
3201
3202		Runnable[] throwingActions = {
3203		() -> CompletableFuture.supplyAsync(null),
3204		() -> CompletableFuture.supplyAsync(null, exec),
3205	<	() -> CompletableFuture.supplyAsync(new IntegerSupplier(ExecutionMode.DEFAULT, 42), null),
3205	>	() -> CompletableFuture.supplyAsync(new IntegerSupplier(ExecutionMode.SYNC, 42), null),
3206
3207		() -> CompletableFuture.runAsync(null),
3208		() -> CompletableFuture.runAsync(null, exec),
#	Line 2951 | Line 3293 | public class CompletableFutureTest exten
3293		() -> CompletableFuture.anyOf(null, f),
3294
3295		() -> f.obtrudeException(null),
3296	+
3297	+	() -> CompletableFuture.delayedExecutor(1L, SECONDS, null),
3298	+	() -> CompletableFuture.delayedExecutor(1L, null, exec),
3299	+	() -> CompletableFuture.delayedExecutor(1L, null),
3300	+
3301	+	() -> f.orTimeout(1L, null),
3302	+	() -> f.completeOnTimeout(42, 1L, null),
3303	+
3304	+	() -> CompletableFuture.failedFuture(null),
3305	+	() -> CompletableFuture.failedStage(null),
3306		};
3307
3308		assertThrows(NullPointerException.class, throwingActions);
#	Line 2965 | Line 3317 | public class CompletableFutureTest exten
3317		assertSame(f, f.toCompletableFuture());
3318		}
3319
3320	<	//     public void testRunAfterEither_resultDeterminedAtTimeOfCreation() {
3321	<	//         for (ExecutionMode m : ExecutionMode.values())
3322	<	//         for (boolean mayInterruptIfRunning : new boolean[] { true, false })
3323	<	//         for (Integer v1 : new Integer[] { 1, null })
3324	<	//     {
3325	<	//         final CompletableFuture<Integer> f = new CompletableFuture<>();
3326	<	//         final CompletableFuture<Integer> g = new CompletableFuture<>();
3327	<	//         final Noop[] rs = new Noop[2];
3328	<	//         for (int i = 0; i < rs.length; i++) rs[i] = new Noop(m);
3329	<	//         f.complete(v1);
3330	<	//         final CompletableFuture<Void> h0 = m.runAfterEither(f, g, rs[0]);
3331	<	//         final CompletableFuture<Void> h1 = m.runAfterEither(g, f, rs[1]);
3332	<	//         assertTrue(g.cancel(mayInterruptIfRunning));
3333	<	//         checkCompletedNormally(h0, null);
3334	<	//         checkCompletedNormally(h1, null);
3335	<	//         for (Noop r : rs) r.assertInvoked();
3336	<	//     }}
3320	>	// jdk9
3321	>
3322	>	/**
3323	>	* newIncompleteFuture returns an incomplete CompletableFuture
3324	>	*/
3325	>	public void testNewIncompleteFuture() {
3326	>	for (Integer v1 : new Integer[] { 1, null })
3327	>	{
3328	>	CompletableFuture<Integer> f = new CompletableFuture<>();
3329	>	CompletableFuture<Integer> g = f.newIncompleteFuture();
3330	>	checkIncomplete(f);
3331	>	checkIncomplete(g);
3332	>	f.complete(v1);
3333	>	checkCompletedNormally(f, v1);
3334	>	checkIncomplete(g);
3335	>	g.complete(v1);
3336	>	checkCompletedNormally(g, v1);
3337	>	assertSame(g.getClass(), CompletableFuture.class);
3338	>	}}
3339	>
3340	>	/**
3341	>	* completedStage returns a completed CompletionStage
3342	>	*/
3343	>	public void testCompletedStage() {
3344	>	AtomicInteger x = new AtomicInteger(0);
3345	>	AtomicReference<Throwable> r = new AtomicReference<Throwable>();
3346	>	CompletionStage<Integer> f = CompletableFuture.completedStage(1);
3347	>	f.whenComplete((v, e) -> {if (e != null) r.set(e); else x.set(v);});
3348	>	assertEquals(x.get(), 1);
3349	>	assertNull(r.get());
3350	>	}
3351	>
3352	>	/**
3353	>	* defaultExecutor by default returns the commonPool if
3354	>	* it supports more than one thread.
3355	>	*/
3356	>	public void testDefaultExecutor() {
3357	>	CompletableFuture<Integer> f = new CompletableFuture<>();
3358	>	Executor e = f.defaultExecutor();
3359	>	Executor c = ForkJoinPool.commonPool();
3360	>	if (ForkJoinPool.getCommonPoolParallelism() > 1)
3361	>	assertSame(e, c);
3362	>	else
3363	>	assertNotSame(e, c);
3364	>	}
3365	>
3366	>	/**
3367	>	* failedFuture returns a CompletableFuture completed
3368	>	* exceptionally with the given Exception
3369	>	*/
3370	>	public void testFailedFuture() {
3371	>	CFException ex = new CFException();
3372	>	CompletableFuture<Integer> f = CompletableFuture.failedFuture(ex);
3373	>	checkCompletedExceptionally(f, ex);
3374	>	}
3375	>
3376	>	/**
3377	>	* failedFuture(null) throws NPE
3378	>	*/
3379	>	public void testFailedFuture_null() {
3380	>	try {
3381	>	CompletableFuture<Integer> f = CompletableFuture.failedFuture(null);
3382	>	shouldThrow();
3383	>	} catch (NullPointerException success) {}
3384	>	}
3385	>
3386	>	/**
3387	>	* copy returns a CompletableFuture that is completed normally,
3388	>	* with the same value, when source is.
3389	>	*/
3390	>	public void testCopy() {
3391	>	CompletableFuture<Integer> f = new CompletableFuture<>();
3392	>	CompletableFuture<Integer> g = f.copy();
3393	>	checkIncomplete(f);
3394	>	checkIncomplete(g);
3395	>	f.complete(1);
3396	>	checkCompletedNormally(f, 1);
3397	>	checkCompletedNormally(g, 1);
3398	>	}
3399	>
3400	>	/**
3401	>	* copy returns a CompletableFuture that is completed exceptionally
3402	>	* when source is.
3403	>	*/
3404	>	public void testCopy2() {
3405	>	CompletableFuture<Integer> f = new CompletableFuture<>();
3406	>	CompletableFuture<Integer> g = f.copy();
3407	>	checkIncomplete(f);
3408	>	checkIncomplete(g);
3409	>	CFException ex = new CFException();
3410	>	f.completeExceptionally(ex);
3411	>	checkCompletedExceptionally(f, ex);
3412	>	checkCompletedWithWrappedException(g, ex);
3413	>	}
3414	>
3415	>	/**
3416	>	* minimalCompletionStage returns a CompletableFuture that is
3417	>	* completed normally, with the same value, when source is.
3418	>	*/
3419	>	public void testMinimalCompletionStage() {
3420	>	CompletableFuture<Integer> f = new CompletableFuture<>();
3421	>	CompletionStage<Integer> g = f.minimalCompletionStage();
3422	>	AtomicInteger x = new AtomicInteger(0);
3423	>	AtomicReference<Throwable> r = new AtomicReference<Throwable>();
3424	>	checkIncomplete(f);
3425	>	g.whenComplete((v, e) -> {if (e != null) r.set(e); else x.set(v);});
3426	>	f.complete(1);
3427	>	checkCompletedNormally(f, 1);
3428	>	assertEquals(x.get(), 1);
3429	>	assertNull(r.get());
3430	>	}
3431	>
3432	>	/**
3433	>	* minimalCompletionStage returns a CompletableFuture that is
3434	>	* completed exceptionally when source is.
3435	>	*/
3436	>	public void testMinimalCompletionStage2() {
3437	>	CompletableFuture<Integer> f = new CompletableFuture<>();
3438	>	CompletionStage<Integer> g = f.minimalCompletionStage();
3439	>	AtomicInteger x = new AtomicInteger(0);
3440	>	AtomicReference<Throwable> r = new AtomicReference<Throwable>();
3441	>	g.whenComplete((v, e) -> {if (e != null) r.set(e); else x.set(v);});
3442	>	checkIncomplete(f);
3443	>	CFException ex = new CFException();
3444	>	f.completeExceptionally(ex);
3445	>	checkCompletedExceptionally(f, ex);
3446	>	assertEquals(x.get(), 0);
3447	>	assertEquals(r.get().getCause(), ex);
3448	>	}
3449	>
3450	>	/**
3451	>	* failedStage returns a CompletionStage completed
3452	>	* exceptionally with the given Exception
3453	>	*/
3454	>	public void testFailedStage() {
3455	>	CFException ex = new CFException();
3456	>	CompletionStage<Integer> f = CompletableFuture.failedStage(ex);
3457	>	AtomicInteger x = new AtomicInteger(0);
3458	>	AtomicReference<Throwable> r = new AtomicReference<Throwable>();
3459	>	f.whenComplete((v, e) -> {if (e != null) r.set(e); else x.set(v);});
3460	>	assertEquals(x.get(), 0);
3461	>	assertEquals(r.get(), ex);
3462	>	}
3463	>
3464	>	/**
3465	>	* completeAsync completes with value of given supplier
3466	>	*/
3467	>	public void testCompleteAsync() {
3468	>	for (Integer v1 : new Integer[] { 1, null })
3469	>	{
3470	>	CompletableFuture<Integer> f = new CompletableFuture<>();
3471	>	f.completeAsync(() -> v1);
3472	>	f.join();
3473	>	checkCompletedNormally(f, v1);
3474	>	}}
3475	>
3476	>	/**
3477	>	* completeAsync completes exceptionally if given supplier throws
3478	>	*/
3479	>	public void testCompleteAsync2() {
3480	>	CompletableFuture<Integer> f = new CompletableFuture<>();
3481	>	CFException ex = new CFException();
3482	>	f.completeAsync(() -> {if (true) throw ex; return 1;});
3483	>	try {
3484	>	f.join();
3485	>	shouldThrow();
3486	>	} catch (CompletionException success) {}
3487	>	checkCompletedWithWrappedException(f, ex);
3488	>	}
3489	>
3490	>	/**
3491	>	* completeAsync with given executor completes with value of given supplier
3492	>	*/
3493	>	public void testCompleteAsync3() {
3494	>	for (Integer v1 : new Integer[] { 1, null })
3495	>	{
3496	>	CompletableFuture<Integer> f = new CompletableFuture<>();
3497	>	ThreadExecutor executor = new ThreadExecutor();
3498	>	f.completeAsync(() -> v1, executor);
3499	>	assertSame(v1, f.join());
3500	>	checkCompletedNormally(f, v1);
3501	>	assertEquals(1, executor.count.get());
3502	>	}}
3503	>
3504	>	/**
3505	>	* completeAsync with given executor completes exceptionally if
3506	>	* given supplier throws
3507	>	*/
3508	>	public void testCompleteAsync4() {
3509	>	CompletableFuture<Integer> f = new CompletableFuture<>();
3510	>	CFException ex = new CFException();
3511	>	ThreadExecutor executor = new ThreadExecutor();
3512	>	f.completeAsync(() -> {if (true) throw ex; return 1;}, executor);
3513	>	try {
3514	>	f.join();
3515	>	shouldThrow();
3516	>	} catch (CompletionException success) {}
3517	>	checkCompletedWithWrappedException(f, ex);
3518	>	assertEquals(1, executor.count.get());
3519	>	}
3520	>
3521	>	/**
3522	>	* orTimeout completes with TimeoutException if not complete
3523	>	*/
3524	>	public void testOrTimeout_timesOut() {
3525	>	long timeoutMillis = timeoutMillis();
3526	>	CompletableFuture<Integer> f = new CompletableFuture<>();
3527	>	long startTime = System.nanoTime();
3528	>	assertSame(f, f.orTimeout(timeoutMillis, MILLISECONDS));
3529	>	checkCompletedWithTimeoutException(f);
3530	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
3531	>	}
3532	>
3533	>	/**
3534	>	* orTimeout completes normally if completed before timeout
3535	>	*/
3536	>	public void testOrTimeout_completed() {
3537	>	for (Integer v1 : new Integer[] { 1, null })
3538	>	{
3539	>	CompletableFuture<Integer> f = new CompletableFuture<>();
3540	>	CompletableFuture<Integer> g = new CompletableFuture<>();
3541	>	long startTime = System.nanoTime();
3542	>	f.complete(v1);
3543	>	assertSame(f, f.orTimeout(LONG_DELAY_MS, MILLISECONDS));
3544	>	assertSame(g, g.orTimeout(LONG_DELAY_MS, MILLISECONDS));
3545	>	g.complete(v1);
3546	>	checkCompletedNormally(f, v1);
3547	>	checkCompletedNormally(g, v1);
3548	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS / 2);
3549	>	}}
3550	>
3551	>	/**
3552	>	* completeOnTimeout completes with given value if not complete
3553	>	*/
3554	>	public void testCompleteOnTimeout_timesOut() {
3555	>	testInParallel(() -> testCompleteOnTimeout_timesOut(42),
3556	>	() -> testCompleteOnTimeout_timesOut(null));
3557	>	}
3558	>
3559	>	/**
3560	>	* completeOnTimeout completes with given value if not complete
3561	>	*/
3562	>	public void testCompleteOnTimeout_timesOut(Integer v) {
3563	>	long timeoutMillis = timeoutMillis();
3564	>	CompletableFuture<Integer> f = new CompletableFuture<>();
3565	>	long startTime = System.nanoTime();
3566	>	assertSame(f, f.completeOnTimeout(v, timeoutMillis, MILLISECONDS));
3567	>	assertSame(v, f.join());
3568	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
3569	>	f.complete(99);         // should have no effect
3570	>	checkCompletedNormally(f, v);
3571	>	}
3572	>
3573	>	/**
3574	>	* completeOnTimeout has no effect if completed within timeout
3575	>	*/
3576	>	public void testCompleteOnTimeout_completed() {
3577	>	for (Integer v1 : new Integer[] { 1, null })
3578	>	{
3579	>	CompletableFuture<Integer> f = new CompletableFuture<>();
3580	>	CompletableFuture<Integer> g = new CompletableFuture<>();
3581	>	long startTime = System.nanoTime();
3582	>	f.complete(v1);
3583	>	assertSame(f, f.completeOnTimeout(-1, LONG_DELAY_MS, MILLISECONDS));
3584	>	assertSame(g, g.completeOnTimeout(-1, LONG_DELAY_MS, MILLISECONDS));
3585	>	g.complete(v1);
3586	>	checkCompletedNormally(f, v1);
3587	>	checkCompletedNormally(g, v1);
3588	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS / 2);
3589	>	}}
3590	>
3591	>	/**
3592	>	* delayedExecutor returns an executor that delays submission
3593	>	*/
3594	>	public void testDelayedExecutor() {
3595	>	testInParallel(() -> testDelayedExecutor(null, null),
3596	>	() -> testDelayedExecutor(null, 1),
3597	>	() -> testDelayedExecutor(new ThreadExecutor(), 1),
3598	>	() -> testDelayedExecutor(new ThreadExecutor(), 1));
3599	>	}
3600	>
3601	>	public void testDelayedExecutor(Executor executor, Integer v) throws Exception {
3602	>	long timeoutMillis = timeoutMillis();
3603	>	// Use an "unreasonably long" long timeout to catch lingering threads
3604	>	long longTimeoutMillis = 1000 * 60 * 60 * 24;
3605	>	final Executor delayer, longDelayer;
3606	>	if (executor == null) {
3607	>	delayer = CompletableFuture.delayedExecutor(timeoutMillis, MILLISECONDS);
3608	>	longDelayer = CompletableFuture.delayedExecutor(longTimeoutMillis, MILLISECONDS);
3609	>	} else {
3610	>	delayer = CompletableFuture.delayedExecutor(timeoutMillis, MILLISECONDS, executor);
3611	>	longDelayer = CompletableFuture.delayedExecutor(longTimeoutMillis, MILLISECONDS, executor);
3612	>	}
3613	>	long startTime = System.nanoTime();
3614	>	CompletableFuture<Integer> f =
3615	>	CompletableFuture.supplyAsync(() -> v, delayer);
3616	>	CompletableFuture<Integer> g =
3617	>	CompletableFuture.supplyAsync(() -> v, longDelayer);
3618	>
3619	>	assertNull(g.getNow(null));
3620	>
3621	>	assertSame(v, f.get(LONG_DELAY_MS, MILLISECONDS));
3622	>	long millisElapsed = millisElapsedSince(startTime);
3623	>	assertTrue(millisElapsed >= timeoutMillis);
3624	>	assertTrue(millisElapsed < LONG_DELAY_MS / 2);
3625	>
3626	>	checkCompletedNormally(f, v);
3627	>
3628	>	checkIncomplete(g);
3629	>	assertTrue(g.cancel(true));
3630	>	}
3631	>
3632	>	//--- tests of implementation details; not part of official tck ---
3633	>
3634	>	Object resultOf(CompletableFuture<?> f) {
3635	>	SecurityManager sm = System.getSecurityManager();
3636	>	if (sm != null) {
3637	>	try {
3638	>	System.setSecurityManager(null);
3639	>	} catch (SecurityException giveUp) {
3640	>	return "Reflection not available";
3641	>	}
3642	>	}
3643	>
3644	>	try {
3645	>	java.lang.reflect.Field resultField
3646	>	= CompletableFuture.class.getDeclaredField("result");
3647	>	resultField.setAccessible(true);
3648	>	return resultField.get(f);
3649	>	} catch (Throwable t) {
3650	>	throw new AssertionError(t);
3651	>	} finally {
3652	>	if (sm != null) System.setSecurityManager(sm);
3653	>	}
3654	>	}
3655	>
3656	>	public void testExceptionPropagationReusesResultObject() {
3657	>	if (!testImplementationDetails) return;
3658	>	for (ExecutionMode m : ExecutionMode.values())
3659	>	{
3660	>	final CFException ex = new CFException();
3661	>	final CompletableFuture<Integer> v42 = CompletableFuture.completedFuture(42);
3662	>	final CompletableFuture<Integer> incomplete = new CompletableFuture<>();
3663	>
3664	>	List<Function<CompletableFuture<Integer>, CompletableFuture<?>>> funs
3665	>	= new ArrayList<>();
3666	>
3667	>	funs.add((y) -> m.thenRun(y, new Noop(m)));
3668	>	funs.add((y) -> m.thenAccept(y, new NoopConsumer(m)));
3669	>	funs.add((y) -> m.thenApply(y, new IncFunction(m)));
3670	>
3671	>	funs.add((y) -> m.runAfterEither(y, incomplete, new Noop(m)));
3672	>	funs.add((y) -> m.acceptEither(y, incomplete, new NoopConsumer(m)));
3673	>	funs.add((y) -> m.applyToEither(y, incomplete, new IncFunction(m)));
3674	>
3675	>	funs.add((y) -> m.runAfterBoth(y, v42, new Noop(m)));
3676	>	funs.add((y) -> m.runAfterBoth(v42, y, new Noop(m)));
3677	>	funs.add((y) -> m.thenAcceptBoth(y, v42, new SubtractAction(m)));
3678	>	funs.add((y) -> m.thenAcceptBoth(v42, y, new SubtractAction(m)));
3679	>	funs.add((y) -> m.thenCombine(y, v42, new SubtractFunction(m)));
3680	>	funs.add((y) -> m.thenCombine(v42, y, new SubtractFunction(m)));
3681	>
3682	>	funs.add((y) -> m.whenComplete(y, (Integer r, Throwable t) -> {}));
3683	>
3684	>	funs.add((y) -> m.thenCompose(y, new CompletableFutureInc(m)));
3685	>
3686	>	funs.add((y) -> CompletableFuture.allOf(new CompletableFuture<?>[] {y}));
3687	>	funs.add((y) -> CompletableFuture.allOf(new CompletableFuture<?>[] {y, v42}));
3688	>	funs.add((y) -> CompletableFuture.allOf(new CompletableFuture<?>[] {v42, y}));
3689	>	funs.add((y) -> CompletableFuture.anyOf(new CompletableFuture<?>[] {y}));
3690	>	funs.add((y) -> CompletableFuture.anyOf(new CompletableFuture<?>[] {y, incomplete}));
3691	>	funs.add((y) -> CompletableFuture.anyOf(new CompletableFuture<?>[] {incomplete, y}));
3692	>
3693	>	for (Function<CompletableFuture<Integer>, CompletableFuture<?>>
3694	>	fun : funs) {
3695	>	CompletableFuture<Integer> f = new CompletableFuture<>();
3696	>	f.completeExceptionally(ex);
3697	>	CompletableFuture<Integer> src = m.thenApply(f, new IncFunction(m));
3698	>	checkCompletedWithWrappedException(src, ex);
3699	>	CompletableFuture<?> dep = fun.apply(src);
3700	>	checkCompletedWithWrappedException(dep, ex);
3701	>	assertSame(resultOf(src), resultOf(dep));
3702	>	}
3703	>
3704	>	for (Function<CompletableFuture<Integer>, CompletableFuture<?>>
3705	>	fun : funs) {
3706	>	CompletableFuture<Integer> f = new CompletableFuture<>();
3707	>	CompletableFuture<Integer> src = m.thenApply(f, new IncFunction(m));
3708	>	CompletableFuture<?> dep = fun.apply(src);
3709	>	f.completeExceptionally(ex);
3710	>	checkCompletedWithWrappedException(src, ex);
3711	>	checkCompletedWithWrappedException(dep, ex);
3712	>	assertSame(resultOf(src), resultOf(dep));
3713	>	}
3714	>
3715	>	for (boolean mayInterruptIfRunning : new boolean[] { true, false })
3716	>	for (Function<CompletableFuture<Integer>, CompletableFuture<?>>
3717	>	fun : funs) {
3718	>	CompletableFuture<Integer> f = new CompletableFuture<>();
3719	>	f.cancel(mayInterruptIfRunning);
3720	>	checkCancelled(f);
3721	>	CompletableFuture<Integer> src = m.thenApply(f, new IncFunction(m));
3722	>	checkCompletedWithWrappedCancellationException(src);
3723	>	CompletableFuture<?> dep = fun.apply(src);
3724	>	checkCompletedWithWrappedCancellationException(dep);
3725	>	assertSame(resultOf(src), resultOf(dep));
3726	>	}
3727	>
3728	>	for (boolean mayInterruptIfRunning : new boolean[] { true, false })
3729	>	for (Function<CompletableFuture<Integer>, CompletableFuture<?>>
3730	>	fun : funs) {
3731	>	CompletableFuture<Integer> f = new CompletableFuture<>();
3732	>	CompletableFuture<Integer> src = m.thenApply(f, new IncFunction(m));
3733	>	CompletableFuture<?> dep = fun.apply(src);
3734	>	f.cancel(mayInterruptIfRunning);
3735	>	checkCancelled(f);
3736	>	checkCompletedWithWrappedCancellationException(src);
3737	>	checkCompletedWithWrappedCancellationException(dep);
3738	>	assertSame(resultOf(src), resultOf(dep));
3739	>	}
3740	>	}}
3741	>
3742	>	/**
3743	>	* Minimal completion stages throw UOE for all non-CompletionStage methods
3744	>	*/
3745	>	public void testMinimalCompletionStage_minimality() {
3746	>	if (!testImplementationDetails) return;
3747	>	Function<Method, String> toSignature =
3748	>	(method) -> method.getName() + Arrays.toString(method.getParameterTypes());
3749	>	Predicate<Method> isNotStatic =
3750	>	(method) -> (method.getModifiers() & Modifier.STATIC) == 0;
3751	>	List<Method> minimalMethods =
3752	>	Stream.of(Object.class, CompletionStage.class)
3753	>	.flatMap((klazz) -> Stream.of(klazz.getMethods()))
3754	>	.filter(isNotStatic)
3755	>	.collect(Collectors.toList());
3756	>	// Methods from CompletableFuture permitted NOT to throw UOE
3757	>	String[] signatureWhitelist = {
3758	>	"newIncompleteFuture[]",
3759	>	"defaultExecutor[]",
3760	>	"minimalCompletionStage[]",
3761	>	"copy[]",
3762	>	};
3763	>	Set<String> permittedMethodSignatures =
3764	>	Stream.concat(minimalMethods.stream().map(toSignature),
3765	>	Stream.of(signatureWhitelist))
3766	>	.collect(Collectors.toSet());
3767	>	List<Method> allMethods = Stream.of(CompletableFuture.class.getMethods())
3768	>	.filter(isNotStatic)
3769	>	.filter((method) -> !permittedMethodSignatures.contains(toSignature.apply(method)))
3770	>	.collect(Collectors.toList());
3771	>
3772	>	CompletionStage<Integer> minimalStage =
3773	>	new CompletableFuture<Integer>().minimalCompletionStage();
3774	>
3775	>	List<Method> bugs = new ArrayList<>();
3776	>	for (Method method : allMethods) {
3777	>	Class<?>[] parameterTypes = method.getParameterTypes();
3778	>	Object[] args = new Object[parameterTypes.length];
3779	>	// Manufacture boxed primitives for primitive params
3780	>	for (int i = 0; i < args.length; i++) {
3781	>	Class<?> type = parameterTypes[i];
3782	>	if (parameterTypes[i] == boolean.class)
3783	>	args[i] = false;
3784	>	else if (parameterTypes[i] == int.class)
3785	>	args[i] = 0;
3786	>	else if (parameterTypes[i] == long.class)
3787	>	args[i] = 0L;
3788	>	}
3789	>	try {
3790	>	method.invoke(minimalStage, args);
3791	>	bugs.add(method);
3792	>	}
3793	>	catch (java.lang.reflect.InvocationTargetException expected) {
3794	>	if (! (expected.getCause() instanceof UnsupportedOperationException)) {
3795	>	bugs.add(method);
3796	>	// expected.getCause().printStackTrace();
3797	>	}
3798	>	}
3799	>	catch (ReflectiveOperationException bad) { throw new Error(bad); }
3800	>	}
3801	>	if (!bugs.isEmpty())
3802	>	throw new Error("Methods did not throw UOE: " + bugs.toString());
3803	>	}
3804	>
3805	>	static class Monad {
3806	>	static class ZeroException extends RuntimeException {
3807	>	public ZeroException() { super("monadic zero"); }
3808	>	}
3809	>	// "return", "unit"
3810	>	static <T> CompletableFuture<T> unit(T value) {
3811	>	return completedFuture(value);
3812	>	}
3813	>	// monadic zero ?
3814	>	static <T> CompletableFuture<T> zero() {
3815	>	return failedFuture(new ZeroException());
3816	>	}
3817	>	// >=>
3818	>	static <T,U,V> Function<T, CompletableFuture<V>> compose
3819	>	(Function<T, CompletableFuture<U>> f,
3820	>	Function<U, CompletableFuture<V>> g) {
3821	>	return (x) -> f.apply(x).thenCompose(g);
3822	>	}
3823	>
3824	>	static void assertZero(CompletableFuture<?> f) {
3825	>	try {
3826	>	f.getNow(null);
3827	>	throw new AssertionFailedError("should throw");
3828	>	} catch (CompletionException success) {
3829	>	assertTrue(success.getCause() instanceof ZeroException);
3830	>	}
3831	>	}
3832	>
3833	>	static <T> void assertFutureEquals(CompletableFuture<T> f,
3834	>	CompletableFuture<T> g) {
3835	>	T fval = null, gval = null;
3836	>	Throwable fex = null, gex = null;
3837	>
3838	>	try { fval = f.get(); }
3839	>	catch (ExecutionException ex) { fex = ex.getCause(); }
3840	>	catch (Throwable ex) { fex = ex; }
3841	>
3842	>	try { gval = g.get(); }
3843	>	catch (ExecutionException ex) { gex = ex.getCause(); }
3844	>	catch (Throwable ex) { gex = ex; }
3845	>
3846	>	if (fex != null || gex != null)
3847	>	assertSame(fex.getClass(), gex.getClass());
3848	>	else
3849	>	assertEquals(fval, gval);
3850	>	}
3851	>
3852	>	static class PlusFuture<T> extends CompletableFuture<T> {
3853	>	AtomicReference<Throwable> firstFailure = new AtomicReference<>(null);
3854	>	}
3855	>
3856	>	/** Implements "monadic plus". */
3857	>	static <T> CompletableFuture<T> plus(CompletableFuture<? extends T> f,
3858	>	CompletableFuture<? extends T> g) {
3859	>	PlusFuture<T> plus = new PlusFuture<T>();
3860	>	BiConsumer<T, Throwable> action = (T result, Throwable ex) -> {
3861	>	try {
3862	>	if (ex == null) {
3863	>	if (plus.complete(result))
3864	>	if (plus.firstFailure.get() != null)
3865	>	plus.firstFailure.set(null);
3866	>	}
3867	>	else if (plus.firstFailure.compareAndSet(null, ex)) {
3868	>	if (plus.isDone())
3869	>	plus.firstFailure.set(null);
3870	>	}
3871	>	else {
3872	>	// first failure has precedence
3873	>	Throwable first = plus.firstFailure.getAndSet(null);
3874	>
3875	>	// may fail with "Self-suppression not permitted"
3876	>	try { first.addSuppressed(ex); }
3877	>	catch (Exception ignored) {}
3878	>
3879	>	plus.completeExceptionally(first);
3880	>	}
3881	>	} catch (Throwable unexpected) {
3882	>	plus.completeExceptionally(unexpected);
3883	>	}
3884	>	};
3885	>	f.whenComplete(action);
3886	>	g.whenComplete(action);
3887	>	return plus;
3888	>	}
3889	>	}
3890	>
3891	>	/**
3892	>	* CompletableFuture is an additive monad - sort of.
3893	>	* https://en.wikipedia.org/wiki/Monad_(functional_programming)#Additive_monads
3894	>	*/
3895	>	public void testAdditiveMonad() throws Throwable {
3896	>	Function<Long, CompletableFuture<Long>> unit = Monad::unit;
3897	>	CompletableFuture<Long> zero = Monad.zero();
3898	>
3899	>	// Some mutually non-commutative functions
3900	>	Function<Long, CompletableFuture<Long>> triple
3901	>	= (x) -> Monad.unit(3 * x);
3902	>	Function<Long, CompletableFuture<Long>> inc
3903	>	= (x) -> Monad.unit(x + 1);
3904	>
3905	>	// unit is a right identity: m >>= unit === m
3906	>	Monad.assertFutureEquals(inc.apply(5L).thenCompose(unit),
3907	>	inc.apply(5L));
3908	>	// unit is a left identity: (unit x) >>= f === f x
3909	>	Monad.assertFutureEquals(unit.apply(5L).thenCompose(inc),
3910	>	inc.apply(5L));
3911	>
3912	>	// associativity: (m >>= f) >>= g === m >>= ( \x -> (f x >>= g) )
3913	>	Monad.assertFutureEquals(
3914	>	unit.apply(5L).thenCompose(inc).thenCompose(triple),
3915	>	unit.apply(5L).thenCompose((x) -> inc.apply(x).thenCompose(triple)));
3916	>
3917	>	// The case for CompletableFuture as an additive monad is weaker...
3918	>
3919	>	// zero is a monadic zero
3920	>	Monad.assertZero(zero);
3921	>
3922	>	// left zero: zero >>= f === zero
3923	>	Monad.assertZero(zero.thenCompose(inc));
3924	>	// right zero: f >>= (\x -> zero) === zero
3925	>	Monad.assertZero(inc.apply(5L).thenCompose((x) -> zero));
3926	>
3927	>	// f plus zero === f
3928	>	Monad.assertFutureEquals(Monad.unit(5L),
3929	>	Monad.plus(Monad.unit(5L), zero));
3930	>	// zero plus f === f
3931	>	Monad.assertFutureEquals(Monad.unit(5L),
3932	>	Monad.plus(zero, Monad.unit(5L)));
3933	>	// zero plus zero === zero
3934	>	Monad.assertZero(Monad.plus(zero, zero));
3935	>	{
3936	>	CompletableFuture<Long> f = Monad.plus(Monad.unit(5L),
3937	>	Monad.unit(8L));
3938	>	// non-determinism
3939	>	assertTrue(f.get() == 5L || f.get() == 8L);
3940	>	}
3941	>
3942	>	CompletableFuture<Long> godot = new CompletableFuture<>();
3943	>	// f plus godot === f (doesn't wait for godot)
3944	>	Monad.assertFutureEquals(Monad.unit(5L),
3945	>	Monad.plus(Monad.unit(5L), godot));
3946	>	// godot plus f === f (doesn't wait for godot)
3947	>	Monad.assertFutureEquals(Monad.unit(5L),
3948	>	Monad.plus(godot, Monad.unit(5L)));
3949	>	}
3950	>
3951	>	/**
3952	>	* A single CompletableFuture with many dependents.
3953	>	* A demo of scalability - runtime is O(n).
3954	>	*/
3955	>	public void testManyDependents() throws Throwable {
3956	>	final int n = 1_000;
3957	>	final CompletableFuture<Void> head = new CompletableFuture<>();
3958	>	final CompletableFuture<Void> complete = CompletableFuture.completedFuture((Void)null);
3959	>	final AtomicInteger count = new AtomicInteger(0);
3960	>	for (int i = 0; i < n; i++) {
3961	>	head.thenRun(() -> count.getAndIncrement());
3962	>	head.thenAccept((x) -> count.getAndIncrement());
3963	>	head.thenApply((x) -> count.getAndIncrement());
3964	>
3965	>	head.runAfterBoth(complete, () -> count.getAndIncrement());
3966	>	head.thenAcceptBoth(complete, (x, y) -> count.getAndIncrement());
3967	>	head.thenCombine(complete, (x, y) -> count.getAndIncrement());
3968	>	complete.runAfterBoth(head, () -> count.getAndIncrement());
3969	>	complete.thenAcceptBoth(head, (x, y) -> count.getAndIncrement());
3970	>	complete.thenCombine(head, (x, y) -> count.getAndIncrement());
3971	>
3972	>	head.runAfterEither(new CompletableFuture<Void>(), () -> count.getAndIncrement());
3973	>	head.acceptEither(new CompletableFuture<Void>(), (x) -> count.getAndIncrement());
3974	>	head.applyToEither(new CompletableFuture<Void>(), (x) -> count.getAndIncrement());
3975	>	new CompletableFuture<Void>().runAfterEither(head, () -> count.getAndIncrement());
3976	>	new CompletableFuture<Void>().acceptEither(head, (x) -> count.getAndIncrement());
3977	>	new CompletableFuture<Void>().applyToEither(head, (x) -> count.getAndIncrement());
3978	>	}
3979	>	head.complete(null);
3980	>	assertEquals(5 * 3 * n, count.get());
3981	>	}
3982	>
3983	>	//     static <U> U join(CompletionStage<U> stage) {
3984	>	//         CompletableFuture<U> f = new CompletableFuture<>();
3985	>	//         stage.whenComplete((v, ex) -> {
3986	>	//             if (ex != null) f.completeExceptionally(ex); else f.complete(v);
3987	>	//         });
3988	>	//         return f.join();
3989	>	//     }
3990	>
3991	>	//     static <U> boolean isDone(CompletionStage<U> stage) {
3992	>	//         CompletableFuture<U> f = new CompletableFuture<>();
3993	>	//         stage.whenComplete((v, ex) -> {
3994	>	//             if (ex != null) f.completeExceptionally(ex); else f.complete(v);
3995	>	//         });
3996	>	//         return f.isDone();
3997	>	//     }
3998	>
3999	>	//     static <U> U join2(CompletionStage<U> stage) {
4000	>	//         return stage.toCompletableFuture().copy().join();
4001	>	//     }
4002	>
4003	>	//     static <U> boolean isDone2(CompletionStage<U> stage) {
4004	>	//         return stage.toCompletableFuture().copy().isDone();
4005	>	//     }
4006
4007		}

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