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

Comparing jsr166/src/test/tck/CompletableFutureTest.java (file contents):
Revision 1.98 by jsr166, Wed Dec 31 19:05:42 2014 UTC vs.
Revision 1.151 by jsr166, Sun Jun 26 17:45:35 2016 UTC

#	Line 7 | Line 7
7
8		import static java.util.concurrent.TimeUnit.MILLISECONDS;
9		import static java.util.concurrent.TimeUnit.SECONDS;
10	+	import static java.util.concurrent.CompletableFuture.completedFuture;
11	+	import static java.util.concurrent.CompletableFuture.failedFuture;
12	+
13	+	import java.lang.reflect.Method;
14	+	import java.lang.reflect.Modifier;
15	+
16	+	import java.util.stream.Collectors;
17	+	import java.util.stream.Stream;
18
19		import java.util.ArrayList;
20	+	import java.util.Arrays;
21		import java.util.List;
22		import java.util.Objects;
23	+	import java.util.Set;
24		import java.util.concurrent.Callable;
25		import java.util.concurrent.CancellationException;
26		import java.util.concurrent.CompletableFuture;
#	Line 21 | Line 31 | 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 java.util.concurrent.atomic.AtomicReference;
37		import java.util.function.BiConsumer;
38		import java.util.function.BiFunction;
39		import java.util.function.Consumer;
40		import java.util.function.Function;
41	+	import java.util.function.Predicate;
42		import java.util.function.Supplier;
43
44	+	import junit.framework.AssertionFailedError;
45		import junit.framework.Test;
46		import junit.framework.TestSuite;
47
48		public class CompletableFutureTest extends JSR166TestCase {
49
50		public static void main(String[] args) {
51	<	junit.textui.TestRunner.run(suite());
51	>	main(suite(), args);
52		}
53		public static Test suite() {
54		return new TestSuite(CompletableFutureTest.class);
#	Line 45 | Line 59 | public class CompletableFutureTest exten
59		void checkIncomplete(CompletableFuture<?> f) {
60		assertFalse(f.isDone());
61		assertFalse(f.isCancelled());
62	<	assertTrue(f.toString().contains("[Not completed]"));
62	>	assertTrue(f.toString().contains("Not completed"));
63		try {
64		assertNull(f.getNow(null));
65		} catch (Throwable fail) { threadUnexpectedException(fail); }
#	Line 75 | Line 89 | public class CompletableFutureTest exten
89		assertTrue(f.toString().contains("[Completed normally]"));
90		}
91
92	<	void checkCompletedWithWrappedCFException(CompletableFuture<?> f) {
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	>	checker.accept(cause);
111	>
112		long startTime = System.nanoTime();
80	–	long timeoutMillis = LONG_DELAY_MS;
113		try {
114	<	f.get(timeoutMillis, MILLISECONDS);
114	>	f.get(LONG_DELAY_MS, MILLISECONDS);
115		shouldThrow();
116		} catch (ExecutionException success) {
117	<	assertTrue(success.getCause() instanceof CFException);
117	>	assertSame(cause, success.getCause());
118		} catch (Throwable fail) { threadUnexpectedException(fail); }
119	<	assertTrue(millisElapsedSince(startTime) < timeoutMillis/2);
119	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS / 2);
120
121		try {
122		f.join();
123		shouldThrow();
124		} catch (CompletionException success) {
125	<	assertTrue(success.getCause() instanceof CFException);
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	<	assertTrue(success.getCause() instanceof CFException);
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	<	assertTrue(success.getCause() instanceof CFException);
139	>	assertSame(cause, success.getCause());
140		} catch (Throwable fail) { threadUnexpectedException(fail); }
141	<	assertTrue(f.isDone());
141	>
142		assertFalse(f.isCancelled());
143	+	assertTrue(f.isDone());
144	+	assertTrue(f.isCompletedExceptionally());
145		assertTrue(f.toString().contains("[Completed exceptionally]"));
146		}
147
148	<	<U> void checkCompletedExceptionallyWithRootCause(CompletableFuture<U> f,
149	<	Throwable ex) {
150	<	long startTime = System.nanoTime();
151	<	long timeoutMillis = LONG_DELAY_MS;
116	<	try {
117	<	f.get(timeoutMillis, MILLISECONDS);
118	<	shouldThrow();
119	<	} catch (ExecutionException success) {
120	<	assertSame(ex, success.getCause());
121	<	} catch (Throwable fail) { threadUnexpectedException(fail); }
122	<	assertTrue(millisElapsedSince(startTime) < timeoutMillis/2);
148	>	void checkCompletedWithWrappedCFException(CompletableFuture<?> f) {
149	>	checkCompletedExceptionally(f, true,
150	>	(t) -> assertTrue(t instanceof CFException));
151	>	}
152
153	<	try {
154	<	f.join();
155	<	shouldThrow();
156	<	} catch (CompletionException success) {
128	<	assertSame(ex, success.getCause());
129	<	}
130	<	try {
131	<	f.getNow(null);
132	<	shouldThrow();
133	<	} catch (CompletionException success) {
134	<	assertSame(ex, success.getCause());
135	<	}
136	<	try {
137	<	f.get();
138	<	shouldThrow();
139	<	} catch (ExecutionException success) {
140	<	assertSame(ex, success.getCause());
141	<	} catch (Throwable fail) { threadUnexpectedException(fail); }
153	>	void checkCompletedWithWrappedCancellationException(CompletableFuture<?> f) {
154	>	checkCompletedExceptionally(f, true,
155	>	(t) -> assertTrue(t instanceof CancellationException));
156	>	}
157
158	<	assertTrue(f.isDone());
159	<	assertFalse(f.isCancelled());
160	<	assertTrue(f.toString().contains("[Completed exceptionally]"));
158	>	void checkCompletedWithTimeoutException(CompletableFuture<?> f) {
159	>	checkCompletedExceptionally(f, false,
160	>	(t) -> assertTrue(t instanceof TimeoutException));
161		}
162
163	<	<U> void checkCompletedWithWrappedException(CompletableFuture<U> f,
164	<	Throwable ex) {
165	<	checkCompletedExceptionallyWithRootCause(f, ex);
151	<	try {
152	<	CompletableFuture<Throwable> spy = f.handle
153	<	((U u, Throwable t) -> t);
154	<	assertTrue(spy.join() instanceof CompletionException);
155	<	assertSame(ex, spy.join().getCause());
156	<	} catch (Throwable fail) { threadUnexpectedException(fail); }
163	>	void checkCompletedWithWrappedException(CompletableFuture<?> f,
164	>	Throwable ex) {
165	>	checkCompletedExceptionally(f, true, (t) -> assertSame(t, ex));
166		}
167
168	<	<U> void checkCompletedExceptionally(CompletableFuture<U> f, Throwable ex) {
169	<	checkCompletedExceptionallyWithRootCause(f, ex);
161	<	try {
162	<	CompletableFuture<Throwable> spy = f.handle
163	<	((U u, Throwable t) -> t);
164	<	assertSame(ex, spy.join());
165	<	} catch (Throwable fail) { threadUnexpectedException(fail); }
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();
170	–	long timeoutMillis = LONG_DELAY_MS;
174		try {
175	<	f.get(timeoutMillis, MILLISECONDS);
175	>	f.get(LONG_DELAY_MS, MILLISECONDS);
176		shouldThrow();
177		} catch (CancellationException success) {
178		} catch (Throwable fail) { threadUnexpectedException(fail); }
179	<	assertTrue(millisElapsedSince(startTime) < timeoutMillis/2);
179	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS / 2);
180
181		try {
182		f.join();
#	Line 188 | Line 191 | public class CompletableFutureTest exten
191		shouldThrow();
192		} catch (CancellationException success) {
193		} catch (Throwable fail) { threadUnexpectedException(fail); }
191	–	assertTrue(f.isDone());
192	–	assertTrue(f.isCompletedExceptionally());
193	–	assertTrue(f.isCancelled());
194	–	assertTrue(f.toString().contains("[Completed exceptionally]"));
195	–	}
194
195	<	void checkCompletedWithWrappedCancellationException(CompletableFuture<?> f) {
198	<	long startTime = System.nanoTime();
199	<	long timeoutMillis = LONG_DELAY_MS;
200	<	try {
201	<	f.get(timeoutMillis, MILLISECONDS);
202	<	shouldThrow();
203	<	} catch (ExecutionException success) {
204	<	assertTrue(success.getCause() instanceof CancellationException);
205	<	} catch (Throwable fail) { threadUnexpectedException(fail); }
206	<	assertTrue(millisElapsedSince(startTime) < timeoutMillis/2);
195	>	assertTrue(exceptionalCompletion(f) instanceof CancellationException);
196
208	–	try {
209	–	f.join();
210	–	shouldThrow();
211	–	} catch (CompletionException success) {
212	–	assertTrue(success.getCause() instanceof CancellationException);
213	–	}
214	–	try {
215	–	f.getNow(null);
216	–	shouldThrow();
217	–	} catch (CompletionException success) {
218	–	assertTrue(success.getCause() instanceof CancellationException);
219	–	}
220	–	try {
221	–	f.get();
222	–	shouldThrow();
223	–	} catch (ExecutionException success) {
224	–	assertTrue(success.getCause() instanceof CancellationException);
225	–	} catch (Throwable fail) { threadUnexpectedException(fail); }
197		assertTrue(f.isDone());
227	–	assertFalse(f.isCancelled());
198		assertTrue(f.isCompletedExceptionally());
199	+	assertTrue(f.isCancelled());
200		assertTrue(f.toString().contains("[Completed exceptionally]"));
201		}
202
#	Line 273 | 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 487 | Line 459 | public class CompletableFutureTest exten
459		class FailingSupplier extends CheckedAction
460		implements Supplier<Integer>
461		{
462	<	FailingSupplier(ExecutionMode m) { super(m); }
462	>	final CFException ex;
463	>	FailingSupplier(ExecutionMode m) { super(m); ex = new CFException(); }
464		public Integer get() {
465		invoked();
466	<	throw new CFException();
466	>	throw ex;
467		}
468		}
469
470		class FailingConsumer extends CheckedIntegerAction
471		implements Consumer<Integer>
472		{
473	<	FailingConsumer(ExecutionMode m) { super(m); }
473	>	final CFException ex;
474	>	FailingConsumer(ExecutionMode m) { super(m); ex = new CFException(); }
475		public void accept(Integer x) {
476		invoked();
477		value = x;
478	<	throw new CFException();
478	>	throw ex;
479		}
480		}
481
482		class FailingBiConsumer extends CheckedIntegerAction
483		implements BiConsumer<Integer, Integer>
484		{
485	<	FailingBiConsumer(ExecutionMode m) { super(m); }
485	>	final CFException ex;
486	>	FailingBiConsumer(ExecutionMode m) { super(m); ex = new CFException(); }
487		public void accept(Integer x, Integer y) {
488		invoked();
489		value = subtract(x, y);
490	<	throw new CFException();
490	>	throw ex;
491		}
492		}
493
494		class FailingFunction extends CheckedIntegerAction
495		implements Function<Integer, Integer>
496		{
497	<	FailingFunction(ExecutionMode m) { super(m); }
497	>	final CFException ex;
498	>	FailingFunction(ExecutionMode m) { super(m); ex = new CFException(); }
499		public Integer apply(Integer x) {
500		invoked();
501		value = x;
502	<	throw new CFException();
502	>	throw ex;
503		}
504		}
505
506		class FailingBiFunction extends CheckedIntegerAction
507		implements BiFunction<Integer, Integer, Integer>
508		{
509	<	FailingBiFunction(ExecutionMode m) { super(m); }
509	>	final CFException ex;
510	>	FailingBiFunction(ExecutionMode m) { super(m); ex = new CFException(); }
511		public Integer apply(Integer x, Integer y) {
512		invoked();
513		value = subtract(x, y);
514	<	throw new CFException();
514	>	throw ex;
515		}
516		}
517
518		class FailingRunnable extends CheckedAction implements Runnable {
519	<	FailingRunnable(ExecutionMode m) { super(m); }
519	>	final CFException ex;
520	>	FailingRunnable(ExecutionMode m) { super(m); ex = new CFException(); }
521		public void run() {
522		invoked();
523	<	throw new CFException();
523	>	throw ex;
524		}
525		}
526
549	–
527		class CompletableFutureInc extends CheckedIntegerAction
528		implements Function<Integer, CompletableFuture<Integer>>
529		{
#	Line 563 | Line 540 | public class CompletableFutureTest exten
540		class FailingCompletableFutureFunction extends CheckedIntegerAction
541		implements Function<Integer, CompletableFuture<Integer>>
542		{
543	<	FailingCompletableFutureFunction(ExecutionMode m) { super(m); }
543	>	final CFException ex;
544	>	FailingCompletableFutureFunction(ExecutionMode m) { super(m); ex = new CFException(); }
545		public CompletableFuture<Integer> apply(Integer x) {
546		invoked();
547		value = x;
548	<	throw new CFException();
548	>	throw ex;
549		}
550		}
551
#	Line 869 | Line 847 | public class CompletableFutureTest exten
847		if (!createIncomplete) assertTrue(f.complete(v1));
848		final CompletableFuture<Integer> g = f.exceptionally
849		((Throwable t) -> {
872	–	// Should not be called
850		a.getAndIncrement();
851	<	throw new AssertionError();
851	>	threadFail("should not be called");
852	>	return null;            // unreached
853		});
854		if (createIncomplete) assertTrue(f.complete(v1));
855
#	Line 905 | Line 883 | public class CompletableFutureTest exten
883		assertEquals(1, a.get());
884		}}
885
886	+	/**
887	+	* If an "exceptionally action" throws an exception, it completes
888	+	* exceptionally with that exception
889	+	*/
890		public void testExceptionally_exceptionalCompletionActionFailed() {
891		for (boolean createIncomplete : new boolean[] { true, false })
910	–	for (Integer v1 : new Integer[] { 1, null })
892		{
893		final AtomicInteger a = new AtomicInteger(0);
894		final CFException ex1 = new CFException();
#	Line 924 | Line 905 | public class CompletableFutureTest exten
905		if (createIncomplete) f.completeExceptionally(ex1);
906
907		checkCompletedWithWrappedException(g, ex2);
908	+	checkCompletedExceptionally(f, ex1);
909		assertEquals(1, a.get());
910		}}
911
#	Line 931 | Line 913 | public class CompletableFutureTest exten
913		* whenComplete action executes on normal completion, propagating
914		* source result.
915		*/
916	<	public void testWhenComplete_normalCompletion1() {
916	>	public void testWhenComplete_normalCompletion() {
917		for (ExecutionMode m : ExecutionMode.values())
918		for (boolean createIncomplete : new boolean[] { true, false })
919		for (Integer v1 : new Integer[] { 1, null })
#	Line 941 | Line 923 | public class CompletableFutureTest exten
923		if (!createIncomplete) assertTrue(f.complete(v1));
924		final CompletableFuture<Integer> g = m.whenComplete
925		(f,
926	<	(Integer x, Throwable t) -> {
926	>	(Integer result, Throwable t) -> {
927		m.checkExecutionMode();
928	<	threadAssertSame(x, v1);
928	>	threadAssertSame(result, v1);
929		threadAssertNull(t);
930		a.getAndIncrement();
931		});
#	Line 961 | Line 943 | public class CompletableFutureTest exten
943		public void testWhenComplete_exceptionalCompletion() {
944		for (ExecutionMode m : ExecutionMode.values())
945		for (boolean createIncomplete : new boolean[] { true, false })
964	–	for (Integer v1 : new Integer[] { 1, null })
946		{
947		final AtomicInteger a = new AtomicInteger(0);
948		final CFException ex = new CFException();
#	Line 969 | Line 950 | public class CompletableFutureTest exten
950		if (!createIncomplete) f.completeExceptionally(ex);
951		final CompletableFuture<Integer> g = m.whenComplete
952		(f,
953	<	(Integer x, Throwable t) -> {
953	>	(Integer result, Throwable t) -> {
954		m.checkExecutionMode();
955	<	threadAssertNull(x);
955	>	threadAssertNull(result);
956		threadAssertSame(t, ex);
957		a.getAndIncrement();
958		});
#	Line 996 | Line 977 | public class CompletableFutureTest exten
977		if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
978		final CompletableFuture<Integer> g = m.whenComplete
979		(f,
980	<	(Integer x, Throwable t) -> {
980	>	(Integer result, Throwable t) -> {
981		m.checkExecutionMode();
982	<	threadAssertNull(x);
982	>	threadAssertNull(result);
983		threadAssertTrue(t instanceof CancellationException);
984		a.getAndIncrement();
985		});
#	Line 1013 | Line 994 | public class CompletableFutureTest exten
994		* If a whenComplete action throws an exception when triggered by
995		* a normal completion, it completes exceptionally
996		*/
997	<	public void testWhenComplete_actionFailed() {
997	>	public void testWhenComplete_sourceCompletedNormallyActionFailed() {
998		for (boolean createIncomplete : new boolean[] { true, false })
999		for (ExecutionMode m : ExecutionMode.values())
1000		for (Integer v1 : new Integer[] { 1, null })
#	Line 1024 | Line 1005 | public class CompletableFutureTest exten
1005		if (!createIncomplete) assertTrue(f.complete(v1));
1006		final CompletableFuture<Integer> g = m.whenComplete
1007		(f,
1008	<	(Integer x, Throwable t) -> {
1008	>	(Integer result, Throwable t) -> {
1009		m.checkExecutionMode();
1010	<	threadAssertSame(x, v1);
1010	>	threadAssertSame(result, v1);
1011		threadAssertNull(t);
1012		a.getAndIncrement();
1013		throw ex;
#	Line 1041 | Line 1022 | public class CompletableFutureTest exten
1022		/**
1023		* If a whenComplete action throws an exception when triggered by
1024		* a source completion that also throws an exception, the source
1025	<	* exception takes precedence.
1025	>	* exception takes precedence (unlike handle)
1026		*/
1027	<	public void testWhenComplete_actionFailedSourceFailed() {
1027	>	public void testWhenComplete_sourceFailedActionFailed() {
1028		for (boolean createIncomplete : new boolean[] { true, false })
1029		for (ExecutionMode m : ExecutionMode.values())
1049	–	for (Integer v1 : new Integer[] { 1, null })
1030		{
1031		final AtomicInteger a = new AtomicInteger(0);
1032		final CFException ex1 = new CFException();
#	Line 1056 | Line 1036 | public class CompletableFutureTest exten
1036		if (!createIncomplete) f.completeExceptionally(ex1);
1037		final CompletableFuture<Integer> g = m.whenComplete
1038		(f,
1039	<	(Integer x, Throwable t) -> {
1039	>	(Integer result, Throwable t) -> {
1040		m.checkExecutionMode();
1041		threadAssertSame(t, ex1);
1042	<	threadAssertNull(x);
1042	>	threadAssertNull(result);
1043		a.getAndIncrement();
1044		throw ex2;
1045		});
#	Line 1067 | Line 1047 | public class CompletableFutureTest exten
1047
1048		checkCompletedWithWrappedException(g, ex1);
1049		checkCompletedExceptionally(f, ex1);
1050	+	if (testImplementationDetails) {
1051	+	assertEquals(1, ex1.getSuppressed().length);
1052	+	assertSame(ex2, ex1.getSuppressed()[0]);
1053	+	}
1054		assertEquals(1, a.get());
1055		}}
1056
#	Line 1084 | Line 1068 | public class CompletableFutureTest exten
1068		if (!createIncomplete) assertTrue(f.complete(v1));
1069		final CompletableFuture<Integer> g = m.handle
1070		(f,
1071	<	(Integer x, Throwable t) -> {
1071	>	(Integer result, Throwable t) -> {
1072		m.checkExecutionMode();
1073	<	threadAssertSame(x, v1);
1073	>	threadAssertSame(result, v1);
1074		threadAssertNull(t);
1075		a.getAndIncrement();
1076		return inc(v1);
#	Line 1113 | Line 1097 | public class CompletableFutureTest exten
1097		if (!createIncomplete) f.completeExceptionally(ex);
1098		final CompletableFuture<Integer> g = m.handle
1099		(f,
1100	<	(Integer x, Throwable t) -> {
1100	>	(Integer result, Throwable t) -> {
1101		m.checkExecutionMode();
1102	<	threadAssertNull(x);
1102	>	threadAssertNull(result);
1103		threadAssertSame(t, ex);
1104		a.getAndIncrement();
1105		return v1;
#	Line 1142 | Line 1126 | public class CompletableFutureTest exten
1126		if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
1127		final CompletableFuture<Integer> g = m.handle
1128		(f,
1129	<	(Integer x, Throwable t) -> {
1129	>	(Integer result, Throwable t) -> {
1130		m.checkExecutionMode();
1131	<	threadAssertNull(x);
1131	>	threadAssertNull(result);
1132		threadAssertTrue(t instanceof CancellationException);
1133		a.getAndIncrement();
1134		return v1;
#	Line 1157 | Line 1141 | public class CompletableFutureTest exten
1141		}}
1142
1143		/**
1144	<	* handle result completes exceptionally if action does
1144	>	* If a "handle action" throws an exception when triggered by
1145	>	* a normal completion, it completes exceptionally
1146		*/
1147	<	public void testHandle_sourceFailedActionFailed() {
1147	>	public void testHandle_sourceCompletedNormallyActionFailed() {
1148		for (ExecutionMode m : ExecutionMode.values())
1149		for (boolean createIncomplete : new boolean[] { true, false })
1150	+	for (Integer v1 : new Integer[] { 1, null })
1151		{
1152		final CompletableFuture<Integer> f = new CompletableFuture<>();
1153		final AtomicInteger a = new AtomicInteger(0);
1154	<	final CFException ex1 = new CFException();
1155	<	final CFException ex2 = new CFException();
1170	<	if (!createIncomplete) f.completeExceptionally(ex1);
1154	>	final CFException ex = new CFException();
1155	>	if (!createIncomplete) assertTrue(f.complete(v1));
1156		final CompletableFuture<Integer> g = m.handle
1157		(f,
1158	<	(Integer x, Throwable t) -> {
1158	>	(Integer result, Throwable t) -> {
1159		m.checkExecutionMode();
1160	<	threadAssertNull(x);
1161	<	threadAssertSame(ex1, t);
1160	>	threadAssertSame(result, v1);
1161	>	threadAssertNull(t);
1162		a.getAndIncrement();
1163	<	throw ex2;
1163	>	throw ex;
1164		});
1165	<	if (createIncomplete) f.completeExceptionally(ex1);
1165	>	if (createIncomplete) assertTrue(f.complete(v1));
1166
1167	<	checkCompletedWithWrappedException(g, ex2);
1168	<	checkCompletedExceptionally(f, ex1);
1167	>	checkCompletedWithWrappedException(g, ex);
1168	>	checkCompletedNormally(f, v1);
1169		assertEquals(1, a.get());
1170		}}
1171
1172	<	public void testHandle_sourceCompletedNormallyActionFailed() {
1173	<	for (ExecutionMode m : ExecutionMode.values())
1172	>	/**
1173	>	* If a "handle action" throws an exception when triggered by
1174	>	* a source completion that also throws an exception, the action
1175	>	* exception takes precedence (unlike whenComplete)
1176	>	*/
1177	>	public void testHandle_sourceFailedActionFailed() {
1178		for (boolean createIncomplete : new boolean[] { true, false })
1179	<	for (Integer v1 : new Integer[] { 1, null })
1179	>	for (ExecutionMode m : ExecutionMode.values())
1180		{
1192	–	final CompletableFuture<Integer> f = new CompletableFuture<>();
1181		final AtomicInteger a = new AtomicInteger(0);
1182	<	final CFException ex = new CFException();
1183	<	if (!createIncomplete) assertTrue(f.complete(v1));
1182	>	final CFException ex1 = new CFException();
1183	>	final CFException ex2 = new CFException();
1184	>	final CompletableFuture<Integer> f = new CompletableFuture<>();
1185	>
1186	>	if (!createIncomplete) f.completeExceptionally(ex1);
1187		final CompletableFuture<Integer> g = m.handle
1188		(f,
1189	<	(Integer x, Throwable t) -> {
1189	>	(Integer result, Throwable t) -> {
1190		m.checkExecutionMode();
1191	<	threadAssertSame(x, v1);
1192	<	threadAssertNull(t);
1191	>	threadAssertNull(result);
1192	>	threadAssertSame(ex1, t);
1193		a.getAndIncrement();
1194	<	throw ex;
1194	>	throw ex2;
1195		});
1196	<	if (createIncomplete) assertTrue(f.complete(v1));
1196	>	if (createIncomplete) f.completeExceptionally(ex1);
1197
1198	<	checkCompletedWithWrappedException(g, ex);
1199	<	checkCompletedNormally(f, v1);
1198	>	checkCompletedWithWrappedException(g, ex2);
1199	>	checkCompletedExceptionally(f, ex1);
1200		assertEquals(1, a.get());
1201		}}
1202
#	Line 1238 | Line 1229 | public class CompletableFutureTest exten
1229		{
1230		final FailingRunnable r = new FailingRunnable(m);
1231		final CompletableFuture<Void> f = m.runAsync(r);
1232	<	checkCompletedWithWrappedCFException(f);
1232	>	checkCompletedWithWrappedException(f, r.ex);
1233		r.assertInvoked();
1234		}}
1235
#	Line 1272 | Line 1263 | public class CompletableFutureTest exten
1263		{
1264		FailingSupplier r = new FailingSupplier(m);
1265		CompletableFuture<Integer> f = m.supplyAsync(r);
1266	<	checkCompletedWithWrappedCFException(f);
1266	>	checkCompletedWithWrappedException(f, r.ex);
1267		r.assertInvoked();
1268		}}
1269
#	Line 1394 | Line 1385 | public class CompletableFutureTest exten
1385		final CompletableFuture<Void> h4 = m.runAfterBoth(f, f, rs[4]);
1386		final CompletableFuture<Void> h5 = m.runAfterEither(f, f, rs[5]);
1387
1388	<	checkCompletedWithWrappedCFException(h0);
1389	<	checkCompletedWithWrappedCFException(h1);
1390	<	checkCompletedWithWrappedCFException(h2);
1391	<	checkCompletedWithWrappedCFException(h3);
1392	<	checkCompletedWithWrappedCFException(h4);
1393	<	checkCompletedWithWrappedCFException(h5);
1388	>	checkCompletedWithWrappedException(h0, rs[0].ex);
1389	>	checkCompletedWithWrappedException(h1, rs[1].ex);
1390	>	checkCompletedWithWrappedException(h2, rs[2].ex);
1391	>	checkCompletedWithWrappedException(h3, rs[3].ex);
1392	>	checkCompletedWithWrappedException(h4, rs[4].ex);
1393	>	checkCompletedWithWrappedException(h5, rs[5].ex);
1394		checkCompletedNormally(f, v1);
1395		}}
1396
#	Line 1498 | Line 1489 | public class CompletableFutureTest exten
1489		final CompletableFuture<Integer> h2 = m.thenApply(f, rs[2]);
1490		final CompletableFuture<Integer> h3 = m.applyToEither(f, f, rs[3]);
1491
1492	<	checkCompletedWithWrappedCFException(h0);
1493	<	checkCompletedWithWrappedCFException(h1);
1494	<	checkCompletedWithWrappedCFException(h2);
1495	<	checkCompletedWithWrappedCFException(h3);
1492	>	checkCompletedWithWrappedException(h0, rs[0].ex);
1493	>	checkCompletedWithWrappedException(h1, rs[1].ex);
1494	>	checkCompletedWithWrappedException(h2, rs[2].ex);
1495	>	checkCompletedWithWrappedException(h3, rs[3].ex);
1496		checkCompletedNormally(f, v1);
1497		}}
1498
#	Line 1600 | Line 1591 | public class CompletableFutureTest exten
1591		final CompletableFuture<Void> h2 = m.thenAccept(f, rs[2]);
1592		final CompletableFuture<Void> h3 = m.acceptEither(f, f, rs[3]);
1593
1594	<	checkCompletedWithWrappedCFException(h0);
1595	<	checkCompletedWithWrappedCFException(h1);
1596	<	checkCompletedWithWrappedCFException(h2);
1597	<	checkCompletedWithWrappedCFException(h3);
1594	>	checkCompletedWithWrappedException(h0, rs[0].ex);
1595	>	checkCompletedWithWrappedException(h1, rs[1].ex);
1596	>	checkCompletedWithWrappedException(h2, rs[2].ex);
1597	>	checkCompletedWithWrappedException(h3, rs[3].ex);
1598		checkCompletedNormally(f, v1);
1599		}}
1600
#	Line 1765 | Line 1756 | public class CompletableFutureTest exten
1756		assertTrue(snd.complete(w2));
1757		final CompletableFuture<Integer> h3 = m.thenCombine(f, g, r3);
1758
1759	<	checkCompletedWithWrappedCFException(h1);
1760	<	checkCompletedWithWrappedCFException(h2);
1761	<	checkCompletedWithWrappedCFException(h3);
1759	>	checkCompletedWithWrappedException(h1, r1.ex);
1760	>	checkCompletedWithWrappedException(h2, r2.ex);
1761	>	checkCompletedWithWrappedException(h3, r3.ex);
1762		r1.assertInvoked();
1763		r2.assertInvoked();
1764		r3.assertInvoked();
#	Line 1929 | Line 1920 | public class CompletableFutureTest exten
1920		assertTrue(snd.complete(w2));
1921		final CompletableFuture<Void> h3 = m.thenAcceptBoth(f, g, r3);
1922
1923	<	checkCompletedWithWrappedCFException(h1);
1924	<	checkCompletedWithWrappedCFException(h2);
1925	<	checkCompletedWithWrappedCFException(h3);
1923	>	checkCompletedWithWrappedException(h1, r1.ex);
1924	>	checkCompletedWithWrappedException(h2, r2.ex);
1925	>	checkCompletedWithWrappedException(h3, r3.ex);
1926		r1.assertInvoked();
1927		r2.assertInvoked();
1928		r3.assertInvoked();
#	Line 2093 | Line 2084 | public class CompletableFutureTest exten
2084		assertTrue(snd.complete(w2));
2085		final CompletableFuture<Void> h3 = m.runAfterBoth(f, g, r3);
2086
2087	<	checkCompletedWithWrappedCFException(h1);
2088	<	checkCompletedWithWrappedCFException(h2);
2089	<	checkCompletedWithWrappedCFException(h3);
2087	>	checkCompletedWithWrappedException(h1, r1.ex);
2088	>	checkCompletedWithWrappedException(h2, r2.ex);
2089	>	checkCompletedWithWrappedException(h3, r3.ex);
2090		r1.assertInvoked();
2091		r2.assertInvoked();
2092		r3.assertInvoked();
#	Line 2385 | Line 2376 | public class CompletableFutureTest exten
2376		f.complete(v1);
2377		final CompletableFuture<Integer> h2 = m.applyToEither(f, g, rs[2]);
2378		final CompletableFuture<Integer> h3 = m.applyToEither(g, f, rs[3]);
2379	<	checkCompletedWithWrappedCFException(h0);
2380	<	checkCompletedWithWrappedCFException(h1);
2381	<	checkCompletedWithWrappedCFException(h2);
2382	<	checkCompletedWithWrappedCFException(h3);
2379	>	checkCompletedWithWrappedException(h0, rs[0].ex);
2380	>	checkCompletedWithWrappedException(h1, rs[1].ex);
2381	>	checkCompletedWithWrappedException(h2, rs[2].ex);
2382	>	checkCompletedWithWrappedException(h3, rs[3].ex);
2383		for (int i = 0; i < 4; i++) rs[i].assertValue(v1);
2384
2385		g.complete(v2);
#	Line 2397 | Line 2388 | public class CompletableFutureTest exten
2388		final CompletableFuture<Integer> h4 = m.applyToEither(f, g, rs[4]);
2389		final CompletableFuture<Integer> h5 = m.applyToEither(g, f, rs[5]);
2390
2391	<	checkCompletedWithWrappedCFException(h4);
2391	>	checkCompletedWithWrappedException(h4, rs[4].ex);
2392		assertTrue(Objects.equals(v1, rs[4].value) ||
2393		Objects.equals(v2, rs[4].value));
2394	<	checkCompletedWithWrappedCFException(h5);
2394	>	checkCompletedWithWrappedException(h5, rs[5].ex);
2395		assertTrue(Objects.equals(v1, rs[5].value) ||
2396		Objects.equals(v2, rs[5].value));
2397
#	Line 2644 | Line 2635 | public class CompletableFutureTest exten
2635		f.complete(v1);
2636		final CompletableFuture<Void> h2 = m.acceptEither(f, g, rs[2]);
2637		final CompletableFuture<Void> h3 = m.acceptEither(g, f, rs[3]);
2638	<	checkCompletedWithWrappedCFException(h0);
2639	<	checkCompletedWithWrappedCFException(h1);
2640	<	checkCompletedWithWrappedCFException(h2);
2641	<	checkCompletedWithWrappedCFException(h3);
2638	>	checkCompletedWithWrappedException(h0, rs[0].ex);
2639	>	checkCompletedWithWrappedException(h1, rs[1].ex);
2640	>	checkCompletedWithWrappedException(h2, rs[2].ex);
2641	>	checkCompletedWithWrappedException(h3, rs[3].ex);
2642		for (int i = 0; i < 4; i++) rs[i].assertValue(v1);
2643
2644		g.complete(v2);
#	Line 2656 | Line 2647 | public class CompletableFutureTest exten
2647		final CompletableFuture<Void> h4 = m.acceptEither(f, g, rs[4]);
2648		final CompletableFuture<Void> h5 = m.acceptEither(g, f, rs[5]);
2649
2650	<	checkCompletedWithWrappedCFException(h4);
2650	>	checkCompletedWithWrappedException(h4, rs[4].ex);
2651		assertTrue(Objects.equals(v1, rs[4].value) ||
2652		Objects.equals(v2, rs[4].value));
2653	<	checkCompletedWithWrappedCFException(h5);
2653	>	checkCompletedWithWrappedException(h5, rs[5].ex);
2654		assertTrue(Objects.equals(v1, rs[5].value) ||
2655		Objects.equals(v2, rs[5].value));
2656
#	Line 2899 | Line 2890 | public class CompletableFutureTest exten
2890		assertTrue(f.complete(v1));
2891		final CompletableFuture<Void> h2 = m.runAfterEither(f, g, rs[2]);
2892		final CompletableFuture<Void> h3 = m.runAfterEither(g, f, rs[3]);
2893	<	checkCompletedWithWrappedCFException(h0);
2894	<	checkCompletedWithWrappedCFException(h1);
2895	<	checkCompletedWithWrappedCFException(h2);
2896	<	checkCompletedWithWrappedCFException(h3);
2893	>	checkCompletedWithWrappedException(h0, rs[0].ex);
2894	>	checkCompletedWithWrappedException(h1, rs[1].ex);
2895	>	checkCompletedWithWrappedException(h2, rs[2].ex);
2896	>	checkCompletedWithWrappedException(h3, rs[3].ex);
2897		for (int i = 0; i < 4; i++) rs[i].assertInvoked();
2898		assertTrue(g.complete(v2));
2899		final CompletableFuture<Void> h4 = m.runAfterEither(f, g, rs[4]);
2900		final CompletableFuture<Void> h5 = m.runAfterEither(g, f, rs[5]);
2901	<	checkCompletedWithWrappedCFException(h4);
2902	<	checkCompletedWithWrappedCFException(h5);
2901	>	checkCompletedWithWrappedException(h4, rs[4].ex);
2902	>	checkCompletedWithWrappedException(h5, rs[5].ex);
2903
2904		checkCompletedNormally(f, v1);
2905		checkCompletedNormally(g, v2);
#	Line 2969 | Line 2960 | public class CompletableFutureTest exten
2960		final CompletableFuture<Integer> g = m.thenCompose(f, r);
2961		if (createIncomplete) assertTrue(f.complete(v1));
2962
2963	<	checkCompletedWithWrappedCFException(g);
2963	>	checkCompletedWithWrappedException(g, r.ex);
2964		checkCompletedNormally(f, v1);
2965		}}
2966
#	Line 2994 | Line 2985 | public class CompletableFutureTest exten
2985		checkCancelled(f);
2986		}}
2987
2988	+	/**
2989	+	* thenCompose result completes exceptionally if the result of the action does
2990	+	*/
2991	+	public void testThenCompose_actionReturnsFailingFuture() {
2992	+	for (ExecutionMode m : ExecutionMode.values())
2993	+	for (int order = 0; order < 6; order++)
2994	+	for (Integer v1 : new Integer[] { 1, null })
2995	+	{
2996	+	final CFException ex = new CFException();
2997	+	final CompletableFuture<Integer> f = new CompletableFuture<>();
2998	+	final CompletableFuture<Integer> g = new CompletableFuture<>();
2999	+	final CompletableFuture<Integer> h;
3000	+	// Test all permutations of orders
3001	+	switch (order) {
3002	+	case 0:
3003	+	assertTrue(f.complete(v1));
3004	+	assertTrue(g.completeExceptionally(ex));
3005	+	h = m.thenCompose(f, (x -> g));
3006	+	break;
3007	+	case 1:
3008	+	assertTrue(f.complete(v1));
3009	+	h = m.thenCompose(f, (x -> g));
3010	+	assertTrue(g.completeExceptionally(ex));
3011	+	break;
3012	+	case 2:
3013	+	assertTrue(g.completeExceptionally(ex));
3014	+	assertTrue(f.complete(v1));
3015	+	h = m.thenCompose(f, (x -> g));
3016	+	break;
3017	+	case 3:
3018	+	assertTrue(g.completeExceptionally(ex));
3019	+	h = m.thenCompose(f, (x -> g));
3020	+	assertTrue(f.complete(v1));
3021	+	break;
3022	+	case 4:
3023	+	h = m.thenCompose(f, (x -> g));
3024	+	assertTrue(f.complete(v1));
3025	+	assertTrue(g.completeExceptionally(ex));
3026	+	break;
3027	+	case 5:
3028	+	h = m.thenCompose(f, (x -> g));
3029	+	assertTrue(f.complete(v1));
3030	+	assertTrue(g.completeExceptionally(ex));
3031	+	break;
3032	+	default: throw new AssertionError();
3033	+	}
3034	+
3035	+	checkCompletedExceptionally(g, ex);
3036	+	checkCompletedWithWrappedException(h, ex);
3037	+	checkCompletedNormally(f, v1);
3038	+	}}
3039	+
3040		// other static methods
3041
3042		/**
#	Line 3026 | Line 3069 | public class CompletableFutureTest exten
3069		}
3070		}
3071
3072	<	public void testAllOf_backwards() throws Exception {
3072	>	public void testAllOf_normal_backwards() throws Exception {
3073		for (int k = 1; k < 10; k++) {
3074		CompletableFuture<Integer>[] fs
3075		= (CompletableFuture<Integer>[]) new CompletableFuture[k];
#	Line 3054 | Line 3097 | public class CompletableFutureTest exten
3097		for (int i = 0; i < k; i++) {
3098		checkIncomplete(f);
3099		checkIncomplete(CompletableFuture.allOf(fs));
3100	<	if (i != k/2) {
3100	>	if (i != k / 2) {
3101		fs[i].complete(i);
3102		checkCompletedNormally(fs[i], i);
3103		} else {
#	Line 3161 | Line 3204 | public class CompletableFutureTest exten
3204		CompletableFuture<Integer> f = new CompletableFuture<>();
3205		CompletableFuture<Integer> g = new CompletableFuture<>();
3206		CompletableFuture<Integer> nullFuture = (CompletableFuture<Integer>)null;
3164	–	CompletableFuture<?> h;
3207		ThreadExecutor exec = new ThreadExecutor();
3208
3209		Runnable[] throwingActions = {
#	Line 3258 | Line 3300 | public class CompletableFutureTest exten
3300		() -> CompletableFuture.anyOf(null, f),
3301
3302		() -> f.obtrudeException(null),
3303	+
3304	+	() -> CompletableFuture.delayedExecutor(1L, SECONDS, null),
3305	+	() -> CompletableFuture.delayedExecutor(1L, null, exec),
3306	+	() -> CompletableFuture.delayedExecutor(1L, null),
3307	+
3308	+	() -> f.orTimeout(1L, null),
3309	+	() -> f.completeOnTimeout(42, 1L, null),
3310	+
3311	+	() -> CompletableFuture.failedFuture(null),
3312	+	() -> CompletableFuture.failedStage(null),
3313		};
3314
3315		assertThrows(NullPointerException.class, throwingActions);
#	Line 3272 | Line 3324 | public class CompletableFutureTest exten
3324		assertSame(f, f.toCompletableFuture());
3325		}
3326
3327	+	// jdk9
3328	+
3329	+	/**
3330	+	* newIncompleteFuture returns an incomplete CompletableFuture
3331	+	*/
3332	+	public void testNewIncompleteFuture() {
3333	+	for (Integer v1 : new Integer[] { 1, null })
3334	+	{
3335	+	CompletableFuture<Integer> f = new CompletableFuture<>();
3336	+	CompletableFuture<Integer> g = f.newIncompleteFuture();
3337	+	checkIncomplete(f);
3338	+	checkIncomplete(g);
3339	+	f.complete(v1);
3340	+	checkCompletedNormally(f, v1);
3341	+	checkIncomplete(g);
3342	+	g.complete(v1);
3343	+	checkCompletedNormally(g, v1);
3344	+	assertSame(g.getClass(), CompletableFuture.class);
3345	+	}}
3346	+
3347	+	/**
3348	+	* completedStage returns a completed CompletionStage
3349	+	*/
3350	+	public void testCompletedStage() {
3351	+	AtomicInteger x = new AtomicInteger(0);
3352	+	AtomicReference<Throwable> r = new AtomicReference<Throwable>();
3353	+	CompletionStage<Integer> f = CompletableFuture.completedStage(1);
3354	+	f.whenComplete((v, e) -> {if (e != null) r.set(e); else x.set(v);});
3355	+	assertEquals(x.get(), 1);
3356	+	assertNull(r.get());
3357	+	}
3358	+
3359	+	/**
3360	+	* defaultExecutor by default returns the commonPool if
3361	+	* it supports more than one thread.
3362	+	*/
3363	+	public void testDefaultExecutor() {
3364	+	CompletableFuture<Integer> f = new CompletableFuture<>();
3365	+	Executor e = f.defaultExecutor();
3366	+	Executor c = ForkJoinPool.commonPool();
3367	+	if (ForkJoinPool.getCommonPoolParallelism() > 1)
3368	+	assertSame(e, c);
3369	+	else
3370	+	assertNotSame(e, c);
3371	+	}
3372	+
3373	+	/**
3374	+	* failedFuture returns a CompletableFuture completed
3375	+	* exceptionally with the given Exception
3376	+	*/
3377	+	public void testFailedFuture() {
3378	+	CFException ex = new CFException();
3379	+	CompletableFuture<Integer> f = CompletableFuture.failedFuture(ex);
3380	+	checkCompletedExceptionally(f, ex);
3381	+	}
3382	+
3383	+	/**
3384	+	* failedFuture(null) throws NPE
3385	+	*/
3386	+	public void testFailedFuture_null() {
3387	+	try {
3388	+	CompletableFuture<Integer> f = CompletableFuture.failedFuture(null);
3389	+	shouldThrow();
3390	+	} catch (NullPointerException success) {}
3391	+	}
3392	+
3393	+	/**
3394	+	* copy returns a CompletableFuture that is completed normally,
3395	+	* with the same value, when source is.
3396	+	*/
3397	+	public void testCopy() {
3398	+	CompletableFuture<Integer> f = new CompletableFuture<>();
3399	+	CompletableFuture<Integer> g = f.copy();
3400	+	checkIncomplete(f);
3401	+	checkIncomplete(g);
3402	+	f.complete(1);
3403	+	checkCompletedNormally(f, 1);
3404	+	checkCompletedNormally(g, 1);
3405	+	}
3406	+
3407	+	/**
3408	+	* copy returns a CompletableFuture that is completed exceptionally
3409	+	* when source is.
3410	+	*/
3411	+	public void testCopy2() {
3412	+	CompletableFuture<Integer> f = new CompletableFuture<>();
3413	+	CompletableFuture<Integer> g = f.copy();
3414	+	checkIncomplete(f);
3415	+	checkIncomplete(g);
3416	+	CFException ex = new CFException();
3417	+	f.completeExceptionally(ex);
3418	+	checkCompletedExceptionally(f, ex);
3419	+	checkCompletedWithWrappedException(g, ex);
3420	+	}
3421	+
3422	+	/**
3423	+	* minimalCompletionStage returns a CompletableFuture that is
3424	+	* completed normally, with the same value, when source is.
3425	+	*/
3426	+	public void testMinimalCompletionStage() {
3427	+	CompletableFuture<Integer> f = new CompletableFuture<>();
3428	+	CompletionStage<Integer> g = f.minimalCompletionStage();
3429	+	AtomicInteger x = new AtomicInteger(0);
3430	+	AtomicReference<Throwable> r = new AtomicReference<Throwable>();
3431	+	checkIncomplete(f);
3432	+	g.whenComplete((v, e) -> {if (e != null) r.set(e); else x.set(v);});
3433	+	f.complete(1);
3434	+	checkCompletedNormally(f, 1);
3435	+	assertEquals(x.get(), 1);
3436	+	assertNull(r.get());
3437	+	}
3438	+
3439	+	/**
3440	+	* minimalCompletionStage returns a CompletableFuture that is
3441	+	* completed exceptionally when source is.
3442	+	*/
3443	+	public void testMinimalCompletionStage2() {
3444	+	CompletableFuture<Integer> f = new CompletableFuture<>();
3445	+	CompletionStage<Integer> g = f.minimalCompletionStage();
3446	+	AtomicInteger x = new AtomicInteger(0);
3447	+	AtomicReference<Throwable> r = new AtomicReference<Throwable>();
3448	+	g.whenComplete((v, e) -> {if (e != null) r.set(e); else x.set(v);});
3449	+	checkIncomplete(f);
3450	+	CFException ex = new CFException();
3451	+	f.completeExceptionally(ex);
3452	+	checkCompletedExceptionally(f, ex);
3453	+	assertEquals(x.get(), 0);
3454	+	assertEquals(r.get().getCause(), ex);
3455	+	}
3456	+
3457	+	/**
3458	+	* failedStage returns a CompletionStage completed
3459	+	* exceptionally with the given Exception
3460	+	*/
3461	+	public void testFailedStage() {
3462	+	CFException ex = new CFException();
3463	+	CompletionStage<Integer> f = CompletableFuture.failedStage(ex);
3464	+	AtomicInteger x = new AtomicInteger(0);
3465	+	AtomicReference<Throwable> r = new AtomicReference<Throwable>();
3466	+	f.whenComplete((v, e) -> {if (e != null) r.set(e); else x.set(v);});
3467	+	assertEquals(x.get(), 0);
3468	+	assertEquals(r.get(), ex);
3469	+	}
3470	+
3471	+	/**
3472	+	* completeAsync completes with value of given supplier
3473	+	*/
3474	+	public void testCompleteAsync() {
3475	+	for (Integer v1 : new Integer[] { 1, null })
3476	+	{
3477	+	CompletableFuture<Integer> f = new CompletableFuture<>();
3478	+	f.completeAsync(() -> v1);
3479	+	f.join();
3480	+	checkCompletedNormally(f, v1);
3481	+	}}
3482	+
3483	+	/**
3484	+	* completeAsync completes exceptionally if given supplier throws
3485	+	*/
3486	+	public void testCompleteAsync2() {
3487	+	CompletableFuture<Integer> f = new CompletableFuture<>();
3488	+	CFException ex = new CFException();
3489	+	f.completeAsync(() -> {if (true) throw ex; return 1;});
3490	+	try {
3491	+	f.join();
3492	+	shouldThrow();
3493	+	} catch (CompletionException success) {}
3494	+	checkCompletedWithWrappedException(f, ex);
3495	+	}
3496	+
3497	+	/**
3498	+	* completeAsync with given executor completes with value of given supplier
3499	+	*/
3500	+	public void testCompleteAsync3() {
3501	+	for (Integer v1 : new Integer[] { 1, null })
3502	+	{
3503	+	CompletableFuture<Integer> f = new CompletableFuture<>();
3504	+	ThreadExecutor executor = new ThreadExecutor();
3505	+	f.completeAsync(() -> v1, executor);
3506	+	assertSame(v1, f.join());
3507	+	checkCompletedNormally(f, v1);
3508	+	assertEquals(1, executor.count.get());
3509	+	}}
3510	+
3511	+	/**
3512	+	* completeAsync with given executor completes exceptionally if
3513	+	* given supplier throws
3514	+	*/
3515	+	public void testCompleteAsync4() {
3516	+	CompletableFuture<Integer> f = new CompletableFuture<>();
3517	+	CFException ex = new CFException();
3518	+	ThreadExecutor executor = new ThreadExecutor();
3519	+	f.completeAsync(() -> {if (true) throw ex; return 1;}, executor);
3520	+	try {
3521	+	f.join();
3522	+	shouldThrow();
3523	+	} catch (CompletionException success) {}
3524	+	checkCompletedWithWrappedException(f, ex);
3525	+	assertEquals(1, executor.count.get());
3526	+	}
3527	+
3528	+	/**
3529	+	* orTimeout completes with TimeoutException if not complete
3530	+	*/
3531	+	public void testOrTimeout_timesOut() {
3532	+	long timeoutMillis = timeoutMillis();
3533	+	CompletableFuture<Integer> f = new CompletableFuture<>();
3534	+	long startTime = System.nanoTime();
3535	+	assertSame(f, f.orTimeout(timeoutMillis, MILLISECONDS));
3536	+	checkCompletedWithTimeoutException(f);
3537	+	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
3538	+	}
3539	+
3540	+	/**
3541	+	* orTimeout completes normally if completed before timeout
3542	+	*/
3543	+	public void testOrTimeout_completed() {
3544	+	for (Integer v1 : new Integer[] { 1, null })
3545	+	{
3546	+	CompletableFuture<Integer> f = new CompletableFuture<>();
3547	+	CompletableFuture<Integer> g = new CompletableFuture<>();
3548	+	long startTime = System.nanoTime();
3549	+	f.complete(v1);
3550	+	assertSame(f, f.orTimeout(LONG_DELAY_MS, MILLISECONDS));
3551	+	assertSame(g, g.orTimeout(LONG_DELAY_MS, MILLISECONDS));
3552	+	g.complete(v1);
3553	+	checkCompletedNormally(f, v1);
3554	+	checkCompletedNormally(g, v1);
3555	+	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS / 2);
3556	+	}}
3557	+
3558	+	/**
3559	+	* completeOnTimeout completes with given value if not complete
3560	+	*/
3561	+	public void testCompleteOnTimeout_timesOut() {
3562	+	testInParallel(() -> testCompleteOnTimeout_timesOut(42),
3563	+	() -> testCompleteOnTimeout_timesOut(null));
3564	+	}
3565	+
3566	+	/**
3567	+	* completeOnTimeout completes with given value if not complete
3568	+	*/
3569	+	public void testCompleteOnTimeout_timesOut(Integer v) {
3570	+	long timeoutMillis = timeoutMillis();
3571	+	CompletableFuture<Integer> f = new CompletableFuture<>();
3572	+	long startTime = System.nanoTime();
3573	+	assertSame(f, f.completeOnTimeout(v, timeoutMillis, MILLISECONDS));
3574	+	assertSame(v, f.join());
3575	+	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
3576	+	f.complete(99);         // should have no effect
3577	+	checkCompletedNormally(f, v);
3578	+	}
3579	+
3580	+	/**
3581	+	* completeOnTimeout has no effect if completed within timeout
3582	+	*/
3583	+	public void testCompleteOnTimeout_completed() {
3584	+	for (Integer v1 : new Integer[] { 1, null })
3585	+	{
3586	+	CompletableFuture<Integer> f = new CompletableFuture<>();
3587	+	CompletableFuture<Integer> g = new CompletableFuture<>();
3588	+	long startTime = System.nanoTime();
3589	+	f.complete(v1);
3590	+	assertSame(f, f.completeOnTimeout(-1, LONG_DELAY_MS, MILLISECONDS));
3591	+	assertSame(g, g.completeOnTimeout(-1, LONG_DELAY_MS, MILLISECONDS));
3592	+	g.complete(v1);
3593	+	checkCompletedNormally(f, v1);
3594	+	checkCompletedNormally(g, v1);
3595	+	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS / 2);
3596	+	}}
3597	+
3598	+	/**
3599	+	* delayedExecutor returns an executor that delays submission
3600	+	*/
3601	+	public void testDelayedExecutor() {
3602	+	testInParallel(() -> testDelayedExecutor(null, null),
3603	+	() -> testDelayedExecutor(null, 1),
3604	+	() -> testDelayedExecutor(new ThreadExecutor(), 1),
3605	+	() -> testDelayedExecutor(new ThreadExecutor(), 1));
3606	+	}
3607	+
3608	+	public void testDelayedExecutor(Executor executor, Integer v) throws Exception {
3609	+	long timeoutMillis = timeoutMillis();
3610	+	// Use an "unreasonably long" long timeout to catch lingering threads
3611	+	long longTimeoutMillis = 1000 * 60 * 60 * 24;
3612	+	final Executor delayer, longDelayer;
3613	+	if (executor == null) {
3614	+	delayer = CompletableFuture.delayedExecutor(timeoutMillis, MILLISECONDS);
3615	+	longDelayer = CompletableFuture.delayedExecutor(longTimeoutMillis, MILLISECONDS);
3616	+	} else {
3617	+	delayer = CompletableFuture.delayedExecutor(timeoutMillis, MILLISECONDS, executor);
3618	+	longDelayer = CompletableFuture.delayedExecutor(longTimeoutMillis, MILLISECONDS, executor);
3619	+	}
3620	+	long startTime = System.nanoTime();
3621	+	CompletableFuture<Integer> f =
3622	+	CompletableFuture.supplyAsync(() -> v, delayer);
3623	+	CompletableFuture<Integer> g =
3624	+	CompletableFuture.supplyAsync(() -> v, longDelayer);
3625	+
3626	+	assertNull(g.getNow(null));
3627	+
3628	+	assertSame(v, f.get(LONG_DELAY_MS, MILLISECONDS));
3629	+	long millisElapsed = millisElapsedSince(startTime);
3630	+	assertTrue(millisElapsed >= timeoutMillis);
3631	+	assertTrue(millisElapsed < LONG_DELAY_MS / 2);
3632	+
3633	+	checkCompletedNormally(f, v);
3634	+
3635	+	checkIncomplete(g);
3636	+	assertTrue(g.cancel(true));
3637	+	}
3638	+
3639		//--- tests of implementation details; not part of official tck ---
3640
3641		Object resultOf(CompletableFuture<?> f) {
3642	+	SecurityManager sm = System.getSecurityManager();
3643	+	if (sm != null) {
3644	+	try {
3645	+	System.setSecurityManager(null);
3646	+	} catch (SecurityException giveUp) {
3647	+	return "Reflection not available";
3648	+	}
3649	+	}
3650	+
3651		try {
3652		java.lang.reflect.Field resultField
3653		= CompletableFuture.class.getDeclaredField("result");
3654		resultField.setAccessible(true);
3655		return resultField.get(f);
3656	<	} catch (Throwable t) { throw new AssertionError(t); }
3656	>	} catch (Throwable t) {
3657	>	throw new AssertionError(t);
3658	>	} finally {
3659	>	if (sm != null) System.setSecurityManager(sm);
3660	>	}
3661		}
3662
3663		public void testExceptionPropagationReusesResultObject() {
#	Line 3303 | Line 3680 | public class CompletableFutureTest exten
3680		funs.add((y) -> m.applyToEither(y, incomplete, new IncFunction(m)));
3681
3682		funs.add((y) -> m.runAfterBoth(y, v42, new Noop(m)));
3683	+	funs.add((y) -> m.runAfterBoth(v42, y, new Noop(m)));
3684		funs.add((y) -> m.thenAcceptBoth(y, v42, new SubtractAction(m)));
3685	+	funs.add((y) -> m.thenAcceptBoth(v42, y, new SubtractAction(m)));
3686		funs.add((y) -> m.thenCombine(y, v42, new SubtractFunction(m)));
3687	+	funs.add((y) -> m.thenCombine(v42, y, new SubtractFunction(m)));
3688
3689	<	funs.add((y) -> m.whenComplete(y, (Integer x, Throwable t) -> {}));
3689	>	funs.add((y) -> m.whenComplete(y, (Integer r, Throwable t) -> {}));
3690
3691		funs.add((y) -> m.thenCompose(y, new CompletableFutureInc(m)));
3692
3693	+	funs.add((y) -> CompletableFuture.allOf(new CompletableFuture<?>[] {y}));
3694		funs.add((y) -> CompletableFuture.allOf(new CompletableFuture<?>[] {y, v42}));
3695	+	funs.add((y) -> CompletableFuture.allOf(new CompletableFuture<?>[] {v42, y}));
3696	+	funs.add((y) -> CompletableFuture.anyOf(new CompletableFuture<?>[] {y}));
3697		funs.add((y) -> CompletableFuture.anyOf(new CompletableFuture<?>[] {y, incomplete}));
3698	+	funs.add((y) -> CompletableFuture.anyOf(new CompletableFuture<?>[] {incomplete, y}));
3699
3700		for (Function<CompletableFuture<Integer>, CompletableFuture<?>>
3701		fun : funs) {
#	Line 3362 | Line 3746 | public class CompletableFutureTest exten
3746		}
3747		}}
3748
3749	+	/**
3750	+	* Minimal completion stages throw UOE for all non-CompletionStage methods
3751	+	*/
3752	+	public void testMinimalCompletionStage_minimality() {
3753	+	if (!testImplementationDetails) return;
3754	+	Function<Method, String> toSignature =
3755	+	(method) -> method.getName() + Arrays.toString(method.getParameterTypes());
3756	+	Predicate<Method> isNotStatic =
3757	+	(method) -> (method.getModifiers() & Modifier.STATIC) == 0;
3758	+	List<Method> minimalMethods =
3759	+	Stream.of(Object.class, CompletionStage.class)
3760	+	.flatMap((klazz) -> Stream.of(klazz.getMethods()))
3761	+	.filter(isNotStatic)
3762	+	.collect(Collectors.toList());
3763	+	// Methods from CompletableFuture permitted NOT to throw UOE
3764	+	String[] signatureWhitelist = {
3765	+	"newIncompleteFuture[]",
3766	+	"defaultExecutor[]",
3767	+	"minimalCompletionStage[]",
3768	+	"copy[]",
3769	+	};
3770	+	Set<String> permittedMethodSignatures =
3771	+	Stream.concat(minimalMethods.stream().map(toSignature),
3772	+	Stream.of(signatureWhitelist))
3773	+	.collect(Collectors.toSet());
3774	+	List<Method> allMethods = Stream.of(CompletableFuture.class.getMethods())
3775	+	.filter(isNotStatic)
3776	+	.filter((method) -> !permittedMethodSignatures.contains(toSignature.apply(method)))
3777	+	.collect(Collectors.toList());
3778	+
3779	+	CompletionStage<Integer> minimalStage =
3780	+	new CompletableFuture<Integer>().minimalCompletionStage();
3781	+
3782	+	List<Method> bugs = new ArrayList<>();
3783	+	for (Method method : allMethods) {
3784	+	Class<?>[] parameterTypes = method.getParameterTypes();
3785	+	Object[] args = new Object[parameterTypes.length];
3786	+	// Manufacture boxed primitives for primitive params
3787	+	for (int i = 0; i < args.length; i++) {
3788	+	Class<?> type = parameterTypes[i];
3789	+	if (parameterTypes[i] == boolean.class)
3790	+	args[i] = false;
3791	+	else if (parameterTypes[i] == int.class)
3792	+	args[i] = 0;
3793	+	else if (parameterTypes[i] == long.class)
3794	+	args[i] = 0L;
3795	+	}
3796	+	try {
3797	+	method.invoke(minimalStage, args);
3798	+	bugs.add(method);
3799	+	}
3800	+	catch (java.lang.reflect.InvocationTargetException expected) {
3801	+	if (! (expected.getCause() instanceof UnsupportedOperationException)) {
3802	+	bugs.add(method);
3803	+	// expected.getCause().printStackTrace();
3804	+	}
3805	+	}
3806	+	catch (ReflectiveOperationException bad) { throw new Error(bad); }
3807	+	}
3808	+	if (!bugs.isEmpty())
3809	+	throw new Error("Methods did not throw UOE: " + bugs.toString());
3810	+	}
3811	+
3812	+	static class Monad {
3813	+	static class ZeroException extends RuntimeException {
3814	+	public ZeroException() { super("monadic zero"); }
3815	+	}
3816	+	// "return", "unit"
3817	+	static <T> CompletableFuture<T> unit(T value) {
3818	+	return completedFuture(value);
3819	+	}
3820	+	// monadic zero ?
3821	+	static <T> CompletableFuture<T> zero() {
3822	+	return failedFuture(new ZeroException());
3823	+	}
3824	+	// >=>
3825	+	static <T,U,V> Function<T, CompletableFuture<V>> compose
3826	+	(Function<T, CompletableFuture<U>> f,
3827	+	Function<U, CompletableFuture<V>> g) {
3828	+	return (x) -> f.apply(x).thenCompose(g);
3829	+	}
3830	+
3831	+	static void assertZero(CompletableFuture<?> f) {
3832	+	try {
3833	+	f.getNow(null);
3834	+	throw new AssertionFailedError("should throw");
3835	+	} catch (CompletionException success) {
3836	+	assertTrue(success.getCause() instanceof ZeroException);
3837	+	}
3838	+	}
3839	+
3840	+	static <T> void assertFutureEquals(CompletableFuture<T> f,
3841	+	CompletableFuture<T> g) {
3842	+	T fval = null, gval = null;
3843	+	Throwable fex = null, gex = null;
3844	+
3845	+	try { fval = f.get(); }
3846	+	catch (ExecutionException ex) { fex = ex.getCause(); }
3847	+	catch (Throwable ex) { fex = ex; }
3848	+
3849	+	try { gval = g.get(); }
3850	+	catch (ExecutionException ex) { gex = ex.getCause(); }
3851	+	catch (Throwable ex) { gex = ex; }
3852	+
3853	+	if (fex != null || gex != null)
3854	+	assertSame(fex.getClass(), gex.getClass());
3855	+	else
3856	+	assertEquals(fval, gval);
3857	+	}
3858	+
3859	+	static class PlusFuture<T> extends CompletableFuture<T> {
3860	+	AtomicReference<Throwable> firstFailure = new AtomicReference<>(null);
3861	+	}
3862	+
3863	+	/** Implements "monadic plus". */
3864	+	static <T> CompletableFuture<T> plus(CompletableFuture<? extends T> f,
3865	+	CompletableFuture<? extends T> g) {
3866	+	PlusFuture<T> plus = new PlusFuture<T>();
3867	+	BiConsumer<T, Throwable> action = (T result, Throwable ex) -> {
3868	+	try {
3869	+	if (ex == null) {
3870	+	if (plus.complete(result))
3871	+	if (plus.firstFailure.get() != null)
3872	+	plus.firstFailure.set(null);
3873	+	}
3874	+	else if (plus.firstFailure.compareAndSet(null, ex)) {
3875	+	if (plus.isDone())
3876	+	plus.firstFailure.set(null);
3877	+	}
3878	+	else {
3879	+	// first failure has precedence
3880	+	Throwable first = plus.firstFailure.getAndSet(null);
3881	+
3882	+	// may fail with "Self-suppression not permitted"
3883	+	try { first.addSuppressed(ex); }
3884	+	catch (Exception ignored) {}
3885	+
3886	+	plus.completeExceptionally(first);
3887	+	}
3888	+	} catch (Throwable unexpected) {
3889	+	plus.completeExceptionally(unexpected);
3890	+	}
3891	+	};
3892	+	f.whenComplete(action);
3893	+	g.whenComplete(action);
3894	+	return plus;
3895	+	}
3896	+	}
3897	+
3898	+	/**
3899	+	* CompletableFuture is an additive monad - sort of.
3900	+	* https://en.wikipedia.org/wiki/Monad_(functional_programming)#Additive_monads
3901	+	*/
3902	+	public void testAdditiveMonad() throws Throwable {
3903	+	Function<Long, CompletableFuture<Long>> unit = Monad::unit;
3904	+	CompletableFuture<Long> zero = Monad.zero();
3905	+
3906	+	// Some mutually non-commutative functions
3907	+	Function<Long, CompletableFuture<Long>> triple
3908	+	= (x) -> Monad.unit(3 * x);
3909	+	Function<Long, CompletableFuture<Long>> inc
3910	+	= (x) -> Monad.unit(x + 1);
3911	+
3912	+	// unit is a right identity: m >>= unit === m
3913	+	Monad.assertFutureEquals(inc.apply(5L).thenCompose(unit),
3914	+	inc.apply(5L));
3915	+	// unit is a left identity: (unit x) >>= f === f x
3916	+	Monad.assertFutureEquals(unit.apply(5L).thenCompose(inc),
3917	+	inc.apply(5L));
3918	+
3919	+	// associativity: (m >>= f) >>= g === m >>= ( \x -> (f x >>= g) )
3920	+	Monad.assertFutureEquals(
3921	+	unit.apply(5L).thenCompose(inc).thenCompose(triple),
3922	+	unit.apply(5L).thenCompose((x) -> inc.apply(x).thenCompose(triple)));
3923	+
3924	+	// The case for CompletableFuture as an additive monad is weaker...
3925	+
3926	+	// zero is a monadic zero
3927	+	Monad.assertZero(zero);
3928	+
3929	+	// left zero: zero >>= f === zero
3930	+	Monad.assertZero(zero.thenCompose(inc));
3931	+	// right zero: f >>= (\x -> zero) === zero
3932	+	Monad.assertZero(inc.apply(5L).thenCompose((x) -> zero));
3933	+
3934	+	// f plus zero === f
3935	+	Monad.assertFutureEquals(Monad.unit(5L),
3936	+	Monad.plus(Monad.unit(5L), zero));
3937	+	// zero plus f === f
3938	+	Monad.assertFutureEquals(Monad.unit(5L),
3939	+	Monad.plus(zero, Monad.unit(5L)));
3940	+	// zero plus zero === zero
3941	+	Monad.assertZero(Monad.plus(zero, zero));
3942	+	{
3943	+	CompletableFuture<Long> f = Monad.plus(Monad.unit(5L),
3944	+	Monad.unit(8L));
3945	+	// non-determinism
3946	+	assertTrue(f.get() == 5L || f.get() == 8L);
3947	+	}
3948	+
3949	+	CompletableFuture<Long> godot = new CompletableFuture<>();
3950	+	// f plus godot === f (doesn't wait for godot)
3951	+	Monad.assertFutureEquals(Monad.unit(5L),
3952	+	Monad.plus(Monad.unit(5L), godot));
3953	+	// godot plus f === f (doesn't wait for godot)
3954	+	Monad.assertFutureEquals(Monad.unit(5L),
3955	+	Monad.plus(godot, Monad.unit(5L)));
3956	+	}
3957	+
3958	+	/**
3959	+	* A single CompletableFuture with many dependents.
3960	+	* A demo of scalability - runtime is O(n).
3961	+	*/
3962	+	public void testManyDependents() throws Throwable {
3963	+	final int n = 1_000;
3964	+	final CompletableFuture<Void> head = new CompletableFuture<>();
3965	+	final CompletableFuture<Void> complete = CompletableFuture.completedFuture((Void)null);
3966	+	final AtomicInteger count = new AtomicInteger(0);
3967	+	for (int i = 0; i < n; i++) {
3968	+	head.thenRun(() -> count.getAndIncrement());
3969	+	head.thenAccept((x) -> count.getAndIncrement());
3970	+	head.thenApply((x) -> count.getAndIncrement());
3971	+
3972	+	head.runAfterBoth(complete, () -> count.getAndIncrement());
3973	+	head.thenAcceptBoth(complete, (x, y) -> count.getAndIncrement());
3974	+	head.thenCombine(complete, (x, y) -> count.getAndIncrement());
3975	+	complete.runAfterBoth(head, () -> count.getAndIncrement());
3976	+	complete.thenAcceptBoth(head, (x, y) -> count.getAndIncrement());
3977	+	complete.thenCombine(head, (x, y) -> count.getAndIncrement());
3978	+
3979	+	head.runAfterEither(new CompletableFuture<Void>(), () -> count.getAndIncrement());
3980	+	head.acceptEither(new CompletableFuture<Void>(), (x) -> count.getAndIncrement());
3981	+	head.applyToEither(new CompletableFuture<Void>(), (x) -> count.getAndIncrement());
3982	+	new CompletableFuture<Void>().runAfterEither(head, () -> count.getAndIncrement());
3983	+	new CompletableFuture<Void>().acceptEither(head, (x) -> count.getAndIncrement());
3984	+	new CompletableFuture<Void>().applyToEither(head, (x) -> count.getAndIncrement());
3985	+	}
3986	+	head.complete(null);
3987	+	assertEquals(5 * 3 * n, count.get());
3988	+	}
3989	+
3990	+	//     static <U> U join(CompletionStage<U> stage) {
3991	+	//         CompletableFuture<U> f = new CompletableFuture<>();
3992	+	//         stage.whenComplete((v, ex) -> {
3993	+	//             if (ex != null) f.completeExceptionally(ex); else f.complete(v);
3994	+	//         });
3995	+	//         return f.join();
3996	+	//     }
3997	+
3998	+	//     static <U> boolean isDone(CompletionStage<U> stage) {
3999	+	//         CompletableFuture<U> f = new CompletableFuture<>();
4000	+	//         stage.whenComplete((v, ex) -> {
4001	+	//             if (ex != null) f.completeExceptionally(ex); else f.complete(v);
4002	+	//         });
4003	+	//         return f.isDone();
4004	+	//     }
4005	+
4006	+	//     static <U> U join2(CompletionStage<U> stage) {
4007	+	//         return stage.toCompletableFuture().copy().join();
4008	+	//     }
4009	+
4010	+	//     static <U> boolean isDone2(CompletionStage<U> stage) {
4011	+	//         return stage.toCompletableFuture().copy().isDone();
4012	+	//     }
4013	+
4014		}

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