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Comparing jsr166/src/test/tck/CompletableFutureTest.java (file contents):
Revision 1.124 by jsr166, Thu Sep 10 17:51:37 2015 UTC vs.
Revision 1.195 by jsr166, Sun Jul 22 20:09:31 2018 UTC

#	Line 7 | Line 7
7
8		import static java.util.concurrent.TimeUnit.MILLISECONDS;
9		import static java.util.concurrent.TimeUnit.SECONDS;
10	+	import static java.util.concurrent.CompletableFuture.completedFuture;
11	+	import static java.util.concurrent.CompletableFuture.failedFuture;
12
13		import java.lang.reflect.Method;
14		import java.lang.reflect.Modifier;
#	Line 28 | Line 30 | import java.util.concurrent.ExecutionExc
30		import java.util.concurrent.Executor;
31		import java.util.concurrent.ForkJoinPool;
32		import java.util.concurrent.ForkJoinTask;
33	+	import java.util.concurrent.RejectedExecutionException;
34		import java.util.concurrent.TimeoutException;
32	–	import java.util.concurrent.TimeUnit;
35		import java.util.concurrent.atomic.AtomicInteger;
36		import java.util.concurrent.atomic.AtomicReference;
37		import java.util.function.BiConsumer;
#	Line 56 | Line 58 | public class CompletableFutureTest exten
58		void checkIncomplete(CompletableFuture<?> f) {
59		assertFalse(f.isDone());
60		assertFalse(f.isCancelled());
61	<	assertTrue(f.toString().contains("Not completed"));
61	>	assertTrue(f.toString().matches(".*\\[.*Not completed.*\\]"));
62	>
63	>	Object result = null;
64		try {
65	<	assertNull(f.getNow(null));
65	>	result = f.getNow(null);
66		} catch (Throwable fail) { threadUnexpectedException(fail); }
67	+	assertNull(result);
68	+
69		try {
70	<	f.get(0L, SECONDS);
70	>	f.get(randomExpiredTimeout(), randomTimeUnit());
71		shouldThrow();
72		}
73		catch (TimeoutException success) {}
#	Line 73 | Line 79 | public class CompletableFutureTest exten
79
80		try {
81		assertEquals(value, f.join());
76	–	} catch (Throwable fail) { threadUnexpectedException(fail); }
77	–	try {
82		assertEquals(value, f.getNow(null));
79	–	} catch (Throwable fail) { threadUnexpectedException(fail); }
80	–	try {
83		assertEquals(value, f.get());
84		} catch (Throwable fail) { threadUnexpectedException(fail); }
85		assertTrue(f.isDone());
86		assertFalse(f.isCancelled());
87		assertFalse(f.isCompletedExceptionally());
88	<	assertTrue(f.toString().contains("[Completed normally]"));
88	>	assertTrue(f.toString().matches(".*\\[.*Completed normally.*\\]"));
89		}
90
91		/**
92		* Returns the "raw" internal exceptional completion of f,
93		* without any additional wrapping with CompletionException.
94		*/
95	<	<U> Throwable exceptionalCompletion(CompletableFuture<U> f) {
96	<	// handle (and whenComplete) can distinguish between "direct"
97	<	// and "wrapped" exceptional completion
98	<	return f.handle((U u, Throwable t) -> t).join();
95	>	Throwable exceptionalCompletion(CompletableFuture<?> f) {
96	>	// handle (and whenComplete and exceptionally) can distinguish
97	>	// between "direct" and "wrapped" exceptional completion
98	>	return f.handle((u, t) -> t).join();
99		}
100
101		void checkCompletedExceptionally(CompletableFuture<?> f,
#	Line 139 | Line 141 | public class CompletableFutureTest exten
141		assertFalse(f.isCancelled());
142		assertTrue(f.isDone());
143		assertTrue(f.isCompletedExceptionally());
144	<	assertTrue(f.toString().contains("[Completed exceptionally]"));
144	>	assertTrue(f.toString().matches(".*\\[.*Completed exceptionally.*\\]"));
145		}
146
147		void checkCompletedWithWrappedCFException(CompletableFuture<?> f) {
148		checkCompletedExceptionally(f, true,
149	<	(t) -> assertTrue(t instanceof CFException));
149	>	t -> assertTrue(t instanceof CFException));
150		}
151
152		void checkCompletedWithWrappedCancellationException(CompletableFuture<?> f) {
153		checkCompletedExceptionally(f, true,
154	<	(t) -> assertTrue(t instanceof CancellationException));
154	>	t -> assertTrue(t instanceof CancellationException));
155		}
156
157		void checkCompletedWithTimeoutException(CompletableFuture<?> f) {
158		checkCompletedExceptionally(f, false,
159	<	(t) -> assertTrue(t instanceof TimeoutException));
159	>	t -> assertTrue(t instanceof TimeoutException));
160		}
161
162		void checkCompletedWithWrappedException(CompletableFuture<?> f,
163		Throwable ex) {
164	<	checkCompletedExceptionally(f, true, (t) -> assertSame(t, ex));
164	>	checkCompletedExceptionally(f, true, t -> assertSame(t, ex));
165		}
166
167		void checkCompletedExceptionally(CompletableFuture<?> f, Throwable ex) {
168	<	checkCompletedExceptionally(f, false, (t) -> assertSame(t, ex));
168	>	checkCompletedExceptionally(f, false, t -> assertSame(t, ex));
169		}
170
171		void checkCancelled(CompletableFuture<?> f) {
#	Line 194 | Line 196 | public class CompletableFutureTest exten
196		assertTrue(f.isDone());
197		assertTrue(f.isCompletedExceptionally());
198		assertTrue(f.isCancelled());
199	<	assertTrue(f.toString().contains("[Completed exceptionally]"));
199	>	assertTrue(f.toString().matches(".*\\[.*Completed exceptionally.*\\]"));
200		}
201
202		/**
#	Line 293 | Line 295 | public class CompletableFutureTest exten
295		}
296
297		f = new CompletableFuture<>();
298	<	f.completeExceptionally(ex = new CFException());
298	>	f.completeExceptionally(new CFException());
299		f.obtrudeValue(v1);
300		checkCompletedNormally(f, v1);
301		f.obtrudeException(ex = new CFException());
#	Line 330 | Line 332 | public class CompletableFutureTest exten
332		/**
333		* toString indicates current completion state
334		*/
335	<	public void testToString() {
336	<	CompletableFuture<String> f;
337	<
338	<	f = new CompletableFuture<String>();
339	<	assertTrue(f.toString().contains("[Not completed]"));
335	>	public void testToString_incomplete() {
336	>	CompletableFuture<String> f = new CompletableFuture<>();
337	>	assertTrue(f.toString().matches(".*\\[.*Not completed.*\\]"));
338	>	if (testImplementationDetails)
339	>	assertEquals(identityString(f) + "[Not completed]",
340	>	f.toString());
341	>	}
342
343	+	public void testToString_normal() {
344	+	CompletableFuture<String> f = new CompletableFuture<>();
345		assertTrue(f.complete("foo"));
346	<	assertTrue(f.toString().contains("[Completed normally]"));
346	>	assertTrue(f.toString().matches(".*\\[.*Completed normally.*\\]"));
347	>	if (testImplementationDetails)
348	>	assertEquals(identityString(f) + "[Completed normally]",
349	>	f.toString());
350	>	}
351
352	<	f = new CompletableFuture<String>();
352	>	public void testToString_exception() {
353	>	CompletableFuture<String> f = new CompletableFuture<>();
354		assertTrue(f.completeExceptionally(new IndexOutOfBoundsException()));
355	<	assertTrue(f.toString().contains("[Completed exceptionally]"));
355	>	assertTrue(f.toString().matches(".*\\[.*Completed exceptionally.*\\]"));
356	>	if (testImplementationDetails)
357	>	assertTrue(f.toString().startsWith(
358	>	identityString(f) + "[Completed exceptionally: "));
359	>	}
360
361	+	public void testToString_cancelled() {
362		for (boolean mayInterruptIfRunning : new boolean[] { true, false }) {
363	<	f = new CompletableFuture<String>();
363	>	CompletableFuture<String> f = new CompletableFuture<>();
364		assertTrue(f.cancel(mayInterruptIfRunning));
365	<	assertTrue(f.toString().contains("[Completed exceptionally]"));
365	>	assertTrue(f.toString().matches(".*\\[.*Completed exceptionally.*\\]"));
366	>	if (testImplementationDetails)
367	>	assertTrue(f.toString().startsWith(
368	>	identityString(f) + "[Completed exceptionally: "));
369		}
370		}
371
#	Line 358 | Line 377 | public class CompletableFutureTest exten
377		checkCompletedNormally(f, "test");
378		}
379
380	<	abstract class CheckedAction {
380	>	abstract static class CheckedAction {
381		int invocationCount = 0;
382		final ExecutionMode m;
383		CheckedAction(ExecutionMode m) { this.m = m; }
#	Line 370 | Line 389 | public class CompletableFutureTest exten
389		void assertInvoked() { assertEquals(1, invocationCount); }
390		}
391
392	<	abstract class CheckedIntegerAction extends CheckedAction {
392	>	abstract static class CheckedIntegerAction extends CheckedAction {
393		Integer value;
394		CheckedIntegerAction(ExecutionMode m) { super(m); }
395		void assertValue(Integer expected) {
#	Line 379 | Line 398 | public class CompletableFutureTest exten
398		}
399		}
400
401	<	class IntegerSupplier extends CheckedAction
401	>	static class IntegerSupplier extends CheckedAction
402		implements Supplier<Integer>
403		{
404		final Integer value;
#	Line 398 | Line 417 | public class CompletableFutureTest exten
417		return (x == null) ? null : x + 1;
418		}
419
420	<	class NoopConsumer extends CheckedIntegerAction
420	>	static class NoopConsumer extends CheckedIntegerAction
421		implements Consumer<Integer>
422		{
423		NoopConsumer(ExecutionMode m) { super(m); }
#	Line 408 | Line 427 | public class CompletableFutureTest exten
427		}
428		}
429
430	<	class IncFunction extends CheckedIntegerAction
430	>	static class IncFunction extends CheckedIntegerAction
431		implements Function<Integer,Integer>
432		{
433		IncFunction(ExecutionMode m) { super(m); }
#	Line 426 | Line 445 | public class CompletableFutureTest exten
445		- ((y == null) ? 99 : y.intValue());
446		}
447
448	<	class SubtractAction extends CheckedIntegerAction
448	>	static class SubtractAction extends CheckedIntegerAction
449		implements BiConsumer<Integer, Integer>
450		{
451		SubtractAction(ExecutionMode m) { super(m); }
#	Line 436 | Line 455 | public class CompletableFutureTest exten
455		}
456		}
457
458	<	class SubtractFunction extends CheckedIntegerAction
458	>	static class SubtractFunction extends CheckedIntegerAction
459		implements BiFunction<Integer, Integer, Integer>
460		{
461		SubtractFunction(ExecutionMode m) { super(m); }
#	Line 446 | Line 465 | public class CompletableFutureTest exten
465		}
466		}
467
468	<	class Noop extends CheckedAction implements Runnable {
468	>	static class Noop extends CheckedAction implements Runnable {
469		Noop(ExecutionMode m) { super(m); }
470		public void run() {
471		invoked();
472		}
473		}
474
475	<	class FailingSupplier extends CheckedAction
475	>	static class FailingSupplier extends CheckedAction
476		implements Supplier<Integer>
477		{
478	<	FailingSupplier(ExecutionMode m) { super(m); }
478	>	final CFException ex;
479	>	FailingSupplier(ExecutionMode m) { super(m); ex = new CFException(); }
480		public Integer get() {
481		invoked();
482	<	throw new CFException();
482	>	throw ex;
483		}
484		}
485
486	<	class FailingConsumer extends CheckedIntegerAction
486	>	static class FailingConsumer extends CheckedIntegerAction
487		implements Consumer<Integer>
488		{
489	<	FailingConsumer(ExecutionMode m) { super(m); }
489	>	final CFException ex;
490	>	FailingConsumer(ExecutionMode m) { super(m); ex = new CFException(); }
491		public void accept(Integer x) {
492		invoked();
493		value = x;
494	<	throw new CFException();
494	>	throw ex;
495		}
496		}
497
498	<	class FailingBiConsumer extends CheckedIntegerAction
498	>	static class FailingBiConsumer extends CheckedIntegerAction
499		implements BiConsumer<Integer, Integer>
500		{
501	<	FailingBiConsumer(ExecutionMode m) { super(m); }
501	>	final CFException ex;
502	>	FailingBiConsumer(ExecutionMode m) { super(m); ex = new CFException(); }
503		public void accept(Integer x, Integer y) {
504		invoked();
505		value = subtract(x, y);
506	<	throw new CFException();
506	>	throw ex;
507		}
508		}
509
510	<	class FailingFunction extends CheckedIntegerAction
510	>	static class FailingFunction extends CheckedIntegerAction
511		implements Function<Integer, Integer>
512		{
513	<	FailingFunction(ExecutionMode m) { super(m); }
513	>	final CFException ex;
514	>	FailingFunction(ExecutionMode m) { super(m); ex = new CFException(); }
515		public Integer apply(Integer x) {
516		invoked();
517		value = x;
518	<	throw new CFException();
518	>	throw ex;
519		}
520		}
521
522	<	class FailingBiFunction extends CheckedIntegerAction
522	>	static class FailingBiFunction extends CheckedIntegerAction
523		implements BiFunction<Integer, Integer, Integer>
524		{
525	<	FailingBiFunction(ExecutionMode m) { super(m); }
525	>	final CFException ex;
526	>	FailingBiFunction(ExecutionMode m) { super(m); ex = new CFException(); }
527		public Integer apply(Integer x, Integer y) {
528		invoked();
529		value = subtract(x, y);
530	<	throw new CFException();
530	>	throw ex;
531		}
532		}
533
534	<	class FailingRunnable extends CheckedAction implements Runnable {
535	<	FailingRunnable(ExecutionMode m) { super(m); }
534	>	static class FailingRunnable extends CheckedAction implements Runnable {
535	>	final CFException ex;
536	>	FailingRunnable(ExecutionMode m) { super(m); ex = new CFException(); }
537		public void run() {
538		invoked();
539	<	throw new CFException();
539	>	throw ex;
540		}
541		}
542
543	<	class CompletableFutureInc extends CheckedIntegerAction
543	>	static class CompletableFutureInc extends CheckedIntegerAction
544		implements Function<Integer, CompletableFuture<Integer>>
545		{
546		CompletableFutureInc(ExecutionMode m) { super(m); }
#	Line 528 | Line 553 | public class CompletableFutureTest exten
553		}
554		}
555
556	<	class FailingCompletableFutureFunction extends CheckedIntegerAction
556	>	static class FailingCompletableFutureFunction extends CheckedIntegerAction
557		implements Function<Integer, CompletableFuture<Integer>>
558		{
559	<	FailingCompletableFutureFunction(ExecutionMode m) { super(m); }
559	>	final CFException ex;
560	>	FailingCompletableFutureFunction(ExecutionMode m) { super(m); ex = new CFException(); }
561		public CompletableFuture<Integer> apply(Integer x) {
562		invoked();
563		value = x;
564	<	throw new CFException();
564	>	throw ex;
565	>	}
566	>	}
567	>
568	>	static class CountingRejectingExecutor implements Executor {
569	>	final RejectedExecutionException ex = new RejectedExecutionException();
570	>	final AtomicInteger count = new AtomicInteger(0);
571	>	public void execute(Runnable r) {
572	>	count.getAndIncrement();
573	>	throw ex;
574		}
575		}
576
#	Line 837 | Line 872 | public class CompletableFutureTest exten
872		if (!createIncomplete) assertTrue(f.complete(v1));
873		final CompletableFuture<Integer> g = f.exceptionally
874		((Throwable t) -> {
840	–	// Should not be called
875		a.getAndIncrement();
876	<	throw new AssertionError();
876	>	threadFail("should not be called");
877	>	return null;            // unreached
878		});
879		if (createIncomplete) assertTrue(f.complete(v1));
880
#	Line 873 | Line 908 | public class CompletableFutureTest exten
908		assertEquals(1, a.get());
909		}}
910
911	+	/**
912	+	* If an "exceptionally action" throws an exception, it completes
913	+	* exceptionally with that exception
914	+	*/
915		public void testExceptionally_exceptionalCompletionActionFailed() {
916		for (boolean createIncomplete : new boolean[] { true, false })
917		{
#	Line 891 | Line 930 | public class CompletableFutureTest exten
930		if (createIncomplete) f.completeExceptionally(ex1);
931
932		checkCompletedWithWrappedException(g, ex2);
933	+	checkCompletedExceptionally(f, ex1);
934		assertEquals(1, a.get());
935		}}
936
#	Line 898 | Line 938 | public class CompletableFutureTest exten
938		* whenComplete action executes on normal completion, propagating
939		* source result.
940		*/
941	<	public void testWhenComplete_normalCompletion1() {
941	>	public void testWhenComplete_normalCompletion() {
942		for (ExecutionMode m : ExecutionMode.values())
943		for (boolean createIncomplete : new boolean[] { true, false })
944		for (Integer v1 : new Integer[] { 1, null })
#	Line 908 | Line 948 | public class CompletableFutureTest exten
948		if (!createIncomplete) assertTrue(f.complete(v1));
949		final CompletableFuture<Integer> g = m.whenComplete
950		(f,
951	<	(Integer x, Throwable t) -> {
951	>	(Integer result, Throwable t) -> {
952		m.checkExecutionMode();
953	<	threadAssertSame(x, v1);
953	>	threadAssertSame(result, v1);
954		threadAssertNull(t);
955		a.getAndIncrement();
956		});
#	Line 935 | Line 975 | public class CompletableFutureTest exten
975		if (!createIncomplete) f.completeExceptionally(ex);
976		final CompletableFuture<Integer> g = m.whenComplete
977		(f,
978	<	(Integer x, Throwable t) -> {
978	>	(Integer result, Throwable t) -> {
979		m.checkExecutionMode();
980	<	threadAssertNull(x);
980	>	threadAssertNull(result);
981		threadAssertSame(t, ex);
982		a.getAndIncrement();
983		});
#	Line 962 | Line 1002 | public class CompletableFutureTest exten
1002		if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
1003		final CompletableFuture<Integer> g = m.whenComplete
1004		(f,
1005	<	(Integer x, Throwable t) -> {
1005	>	(Integer result, Throwable t) -> {
1006		m.checkExecutionMode();
1007	<	threadAssertNull(x);
1007	>	threadAssertNull(result);
1008		threadAssertTrue(t instanceof CancellationException);
1009		a.getAndIncrement();
1010		});
#	Line 979 | Line 1019 | public class CompletableFutureTest exten
1019		* If a whenComplete action throws an exception when triggered by
1020		* a normal completion, it completes exceptionally
1021		*/
1022	<	public void testWhenComplete_actionFailed() {
1022	>	public void testWhenComplete_sourceCompletedNormallyActionFailed() {
1023		for (boolean createIncomplete : new boolean[] { true, false })
1024		for (ExecutionMode m : ExecutionMode.values())
1025		for (Integer v1 : new Integer[] { 1, null })
#	Line 990 | Line 1030 | public class CompletableFutureTest exten
1030		if (!createIncomplete) assertTrue(f.complete(v1));
1031		final CompletableFuture<Integer> g = m.whenComplete
1032		(f,
1033	<	(Integer x, Throwable t) -> {
1033	>	(Integer result, Throwable t) -> {
1034		m.checkExecutionMode();
1035	<	threadAssertSame(x, v1);
1035	>	threadAssertSame(result, v1);
1036		threadAssertNull(t);
1037		a.getAndIncrement();
1038		throw ex;
#	Line 1007 | Line 1047 | public class CompletableFutureTest exten
1047		/**
1048		* If a whenComplete action throws an exception when triggered by
1049		* a source completion that also throws an exception, the source
1050	<	* exception takes precedence.
1050	>	* exception takes precedence (unlike handle)
1051		*/
1052	<	public void testWhenComplete_actionFailedSourceFailed() {
1052	>	public void testWhenComplete_sourceFailedActionFailed() {
1053		for (boolean createIncomplete : new boolean[] { true, false })
1054		for (ExecutionMode m : ExecutionMode.values())
1055		{
#	Line 1021 | Line 1061 | public class CompletableFutureTest exten
1061		if (!createIncomplete) f.completeExceptionally(ex1);
1062		final CompletableFuture<Integer> g = m.whenComplete
1063		(f,
1064	<	(Integer x, Throwable t) -> {
1064	>	(Integer result, Throwable t) -> {
1065		m.checkExecutionMode();
1066		threadAssertSame(t, ex1);
1067	<	threadAssertNull(x);
1067	>	threadAssertNull(result);
1068		a.getAndIncrement();
1069		throw ex2;
1070		});
#	Line 1032 | Line 1072 | public class CompletableFutureTest exten
1072
1073		checkCompletedWithWrappedException(g, ex1);
1074		checkCompletedExceptionally(f, ex1);
1075	+	if (testImplementationDetails) {
1076	+	assertEquals(1, ex1.getSuppressed().length);
1077	+	assertSame(ex2, ex1.getSuppressed()[0]);
1078	+	}
1079		assertEquals(1, a.get());
1080		}}
1081
#	Line 1049 | Line 1093 | public class CompletableFutureTest exten
1093		if (!createIncomplete) assertTrue(f.complete(v1));
1094		final CompletableFuture<Integer> g = m.handle
1095		(f,
1096	<	(Integer x, Throwable t) -> {
1096	>	(Integer result, Throwable t) -> {
1097		m.checkExecutionMode();
1098	<	threadAssertSame(x, v1);
1098	>	threadAssertSame(result, v1);
1099		threadAssertNull(t);
1100		a.getAndIncrement();
1101		return inc(v1);
#	Line 1078 | Line 1122 | public class CompletableFutureTest exten
1122		if (!createIncomplete) f.completeExceptionally(ex);
1123		final CompletableFuture<Integer> g = m.handle
1124		(f,
1125	<	(Integer x, Throwable t) -> {
1125	>	(Integer result, Throwable t) -> {
1126		m.checkExecutionMode();
1127	<	threadAssertNull(x);
1127	>	threadAssertNull(result);
1128		threadAssertSame(t, ex);
1129		a.getAndIncrement();
1130		return v1;
#	Line 1107 | Line 1151 | public class CompletableFutureTest exten
1151		if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
1152		final CompletableFuture<Integer> g = m.handle
1153		(f,
1154	<	(Integer x, Throwable t) -> {
1154	>	(Integer result, Throwable t) -> {
1155		m.checkExecutionMode();
1156	<	threadAssertNull(x);
1156	>	threadAssertNull(result);
1157		threadAssertTrue(t instanceof CancellationException);
1158		a.getAndIncrement();
1159		return v1;
#	Line 1122 | Line 1166 | public class CompletableFutureTest exten
1166		}}
1167
1168		/**
1169	<	* handle result completes exceptionally if action does
1169	>	* If a "handle action" throws an exception when triggered by
1170	>	* a normal completion, it completes exceptionally
1171		*/
1172	<	public void testHandle_sourceFailedActionFailed() {
1172	>	public void testHandle_sourceCompletedNormallyActionFailed() {
1173		for (ExecutionMode m : ExecutionMode.values())
1174		for (boolean createIncomplete : new boolean[] { true, false })
1175	+	for (Integer v1 : new Integer[] { 1, null })
1176		{
1177		final CompletableFuture<Integer> f = new CompletableFuture<>();
1178		final AtomicInteger a = new AtomicInteger(0);
1179	<	final CFException ex1 = new CFException();
1180	<	final CFException ex2 = new CFException();
1135	<	if (!createIncomplete) f.completeExceptionally(ex1);
1179	>	final CFException ex = new CFException();
1180	>	if (!createIncomplete) assertTrue(f.complete(v1));
1181		final CompletableFuture<Integer> g = m.handle
1182		(f,
1183	<	(Integer x, Throwable t) -> {
1183	>	(Integer result, Throwable t) -> {
1184		m.checkExecutionMode();
1185	<	threadAssertNull(x);
1186	<	threadAssertSame(ex1, t);
1185	>	threadAssertSame(result, v1);
1186	>	threadAssertNull(t);
1187		a.getAndIncrement();
1188	<	throw ex2;
1188	>	throw ex;
1189		});
1190	<	if (createIncomplete) f.completeExceptionally(ex1);
1190	>	if (createIncomplete) assertTrue(f.complete(v1));
1191
1192	<	checkCompletedWithWrappedException(g, ex2);
1193	<	checkCompletedExceptionally(f, ex1);
1192	>	checkCompletedWithWrappedException(g, ex);
1193	>	checkCompletedNormally(f, v1);
1194		assertEquals(1, a.get());
1195		}}
1196
1197	<	public void testHandle_sourceCompletedNormallyActionFailed() {
1198	<	for (ExecutionMode m : ExecutionMode.values())
1197	>	/**
1198	>	* If a "handle action" throws an exception when triggered by
1199	>	* a source completion that also throws an exception, the action
1200	>	* exception takes precedence (unlike whenComplete)
1201	>	*/
1202	>	public void testHandle_sourceFailedActionFailed() {
1203		for (boolean createIncomplete : new boolean[] { true, false })
1204	<	for (Integer v1 : new Integer[] { 1, null })
1204	>	for (ExecutionMode m : ExecutionMode.values())
1205		{
1157	–	final CompletableFuture<Integer> f = new CompletableFuture<>();
1206		final AtomicInteger a = new AtomicInteger(0);
1207	<	final CFException ex = new CFException();
1208	<	if (!createIncomplete) assertTrue(f.complete(v1));
1207	>	final CFException ex1 = new CFException();
1208	>	final CFException ex2 = new CFException();
1209	>	final CompletableFuture<Integer> f = new CompletableFuture<>();
1210	>
1211	>	if (!createIncomplete) f.completeExceptionally(ex1);
1212		final CompletableFuture<Integer> g = m.handle
1213		(f,
1214	<	(Integer x, Throwable t) -> {
1214	>	(Integer result, Throwable t) -> {
1215		m.checkExecutionMode();
1216	<	threadAssertSame(x, v1);
1217	<	threadAssertNull(t);
1216	>	threadAssertNull(result);
1217	>	threadAssertSame(ex1, t);
1218		a.getAndIncrement();
1219	<	throw ex;
1219	>	throw ex2;
1220		});
1221	<	if (createIncomplete) assertTrue(f.complete(v1));
1221	>	if (createIncomplete) f.completeExceptionally(ex1);
1222
1223	<	checkCompletedWithWrappedException(g, ex);
1224	<	checkCompletedNormally(f, v1);
1223	>	checkCompletedWithWrappedException(g, ex2);
1224	>	checkCompletedExceptionally(f, ex1);
1225		assertEquals(1, a.get());
1226		}}
1227
#	Line 1203 | Line 1254 | public class CompletableFutureTest exten
1254		{
1255		final FailingRunnable r = new FailingRunnable(m);
1256		final CompletableFuture<Void> f = m.runAsync(r);
1257	<	checkCompletedWithWrappedCFException(f);
1257	>	checkCompletedWithWrappedException(f, r.ex);
1258		r.assertInvoked();
1259		}}
1260
1261	+	@SuppressWarnings("FutureReturnValueIgnored")
1262	+	public void testRunAsync_rejectingExecutor() {
1263	+	CountingRejectingExecutor e = new CountingRejectingExecutor();
1264	+	try {
1265	+	CompletableFuture.runAsync(() -> {}, e);
1266	+	shouldThrow();
1267	+	} catch (Throwable t) {
1268	+	assertSame(e.ex, t);
1269	+	}
1270	+
1271	+	assertEquals(1, e.count.get());
1272	+	}
1273	+
1274		/**
1275		* supplyAsync completes with result of supplier
1276		*/
#	Line 1237 | Line 1301 | public class CompletableFutureTest exten
1301		{
1302		FailingSupplier r = new FailingSupplier(m);
1303		CompletableFuture<Integer> f = m.supplyAsync(r);
1304	<	checkCompletedWithWrappedCFException(f);
1304	>	checkCompletedWithWrappedException(f, r.ex);
1305		r.assertInvoked();
1306		}}
1307
1308	+	@SuppressWarnings("FutureReturnValueIgnored")
1309	+	public void testSupplyAsync_rejectingExecutor() {
1310	+	CountingRejectingExecutor e = new CountingRejectingExecutor();
1311	+	try {
1312	+	CompletableFuture.supplyAsync(() -> null, e);
1313	+	shouldThrow();
1314	+	} catch (Throwable t) {
1315	+	assertSame(e.ex, t);
1316	+	}
1317	+
1318	+	assertEquals(1, e.count.get());
1319	+	}
1320	+
1321		// seq completion methods
1322
1323		/**
#	Line 1359 | Line 1436 | public class CompletableFutureTest exten
1436		final CompletableFuture<Void> h4 = m.runAfterBoth(f, f, rs[4]);
1437		final CompletableFuture<Void> h5 = m.runAfterEither(f, f, rs[5]);
1438
1439	<	checkCompletedWithWrappedCFException(h0);
1440	<	checkCompletedWithWrappedCFException(h1);
1441	<	checkCompletedWithWrappedCFException(h2);
1442	<	checkCompletedWithWrappedCFException(h3);
1443	<	checkCompletedWithWrappedCFException(h4);
1444	<	checkCompletedWithWrappedCFException(h5);
1439	>	checkCompletedWithWrappedException(h0, rs[0].ex);
1440	>	checkCompletedWithWrappedException(h1, rs[1].ex);
1441	>	checkCompletedWithWrappedException(h2, rs[2].ex);
1442	>	checkCompletedWithWrappedException(h3, rs[3].ex);
1443	>	checkCompletedWithWrappedException(h4, rs[4].ex);
1444	>	checkCompletedWithWrappedException(h5, rs[5].ex);
1445		checkCompletedNormally(f, v1);
1446		}}
1447
#	Line 1463 | Line 1540 | public class CompletableFutureTest exten
1540		final CompletableFuture<Integer> h2 = m.thenApply(f, rs[2]);
1541		final CompletableFuture<Integer> h3 = m.applyToEither(f, f, rs[3]);
1542
1543	<	checkCompletedWithWrappedCFException(h0);
1544	<	checkCompletedWithWrappedCFException(h1);
1545	<	checkCompletedWithWrappedCFException(h2);
1546	<	checkCompletedWithWrappedCFException(h3);
1543	>	checkCompletedWithWrappedException(h0, rs[0].ex);
1544	>	checkCompletedWithWrappedException(h1, rs[1].ex);
1545	>	checkCompletedWithWrappedException(h2, rs[2].ex);
1546	>	checkCompletedWithWrappedException(h3, rs[3].ex);
1547		checkCompletedNormally(f, v1);
1548		}}
1549
#	Line 1565 | Line 1642 | public class CompletableFutureTest exten
1642		final CompletableFuture<Void> h2 = m.thenAccept(f, rs[2]);
1643		final CompletableFuture<Void> h3 = m.acceptEither(f, f, rs[3]);
1644
1645	<	checkCompletedWithWrappedCFException(h0);
1646	<	checkCompletedWithWrappedCFException(h1);
1647	<	checkCompletedWithWrappedCFException(h2);
1648	<	checkCompletedWithWrappedCFException(h3);
1645	>	checkCompletedWithWrappedException(h0, rs[0].ex);
1646	>	checkCompletedWithWrappedException(h1, rs[1].ex);
1647	>	checkCompletedWithWrappedException(h2, rs[2].ex);
1648	>	checkCompletedWithWrappedException(h3, rs[3].ex);
1649		checkCompletedNormally(f, v1);
1650		}}
1651
#	Line 1730 | Line 1807 | public class CompletableFutureTest exten
1807		assertTrue(snd.complete(w2));
1808		final CompletableFuture<Integer> h3 = m.thenCombine(f, g, r3);
1809
1810	<	checkCompletedWithWrappedCFException(h1);
1811	<	checkCompletedWithWrappedCFException(h2);
1812	<	checkCompletedWithWrappedCFException(h3);
1810	>	checkCompletedWithWrappedException(h1, r1.ex);
1811	>	checkCompletedWithWrappedException(h2, r2.ex);
1812	>	checkCompletedWithWrappedException(h3, r3.ex);
1813		r1.assertInvoked();
1814		r2.assertInvoked();
1815		r3.assertInvoked();
#	Line 1894 | Line 1971 | public class CompletableFutureTest exten
1971		assertTrue(snd.complete(w2));
1972		final CompletableFuture<Void> h3 = m.thenAcceptBoth(f, g, r3);
1973
1974	<	checkCompletedWithWrappedCFException(h1);
1975	<	checkCompletedWithWrappedCFException(h2);
1976	<	checkCompletedWithWrappedCFException(h3);
1974	>	checkCompletedWithWrappedException(h1, r1.ex);
1975	>	checkCompletedWithWrappedException(h2, r2.ex);
1976	>	checkCompletedWithWrappedException(h3, r3.ex);
1977		r1.assertInvoked();
1978		r2.assertInvoked();
1979		r3.assertInvoked();
#	Line 2058 | Line 2135 | public class CompletableFutureTest exten
2135		assertTrue(snd.complete(w2));
2136		final CompletableFuture<Void> h3 = m.runAfterBoth(f, g, r3);
2137
2138	<	checkCompletedWithWrappedCFException(h1);
2139	<	checkCompletedWithWrappedCFException(h2);
2140	<	checkCompletedWithWrappedCFException(h3);
2138	>	checkCompletedWithWrappedException(h1, r1.ex);
2139	>	checkCompletedWithWrappedException(h2, r2.ex);
2140	>	checkCompletedWithWrappedException(h3, r3.ex);
2141		r1.assertInvoked();
2142		r2.assertInvoked();
2143		r3.assertInvoked();
#	Line 2350 | Line 2427 | public class CompletableFutureTest exten
2427		f.complete(v1);
2428		final CompletableFuture<Integer> h2 = m.applyToEither(f, g, rs[2]);
2429		final CompletableFuture<Integer> h3 = m.applyToEither(g, f, rs[3]);
2430	<	checkCompletedWithWrappedCFException(h0);
2431	<	checkCompletedWithWrappedCFException(h1);
2432	<	checkCompletedWithWrappedCFException(h2);
2433	<	checkCompletedWithWrappedCFException(h3);
2430	>	checkCompletedWithWrappedException(h0, rs[0].ex);
2431	>	checkCompletedWithWrappedException(h1, rs[1].ex);
2432	>	checkCompletedWithWrappedException(h2, rs[2].ex);
2433	>	checkCompletedWithWrappedException(h3, rs[3].ex);
2434		for (int i = 0; i < 4; i++) rs[i].assertValue(v1);
2435
2436		g.complete(v2);
#	Line 2362 | Line 2439 | public class CompletableFutureTest exten
2439		final CompletableFuture<Integer> h4 = m.applyToEither(f, g, rs[4]);
2440		final CompletableFuture<Integer> h5 = m.applyToEither(g, f, rs[5]);
2441
2442	<	checkCompletedWithWrappedCFException(h4);
2442	>	checkCompletedWithWrappedException(h4, rs[4].ex);
2443		assertTrue(Objects.equals(v1, rs[4].value) ||
2444		Objects.equals(v2, rs[4].value));
2445	<	checkCompletedWithWrappedCFException(h5);
2445	>	checkCompletedWithWrappedException(h5, rs[5].ex);
2446		assertTrue(Objects.equals(v1, rs[5].value) ||
2447		Objects.equals(v2, rs[5].value));
2448
#	Line 2503 | Line 2580 | public class CompletableFutureTest exten
2580
2581		// unspecified behavior - both source completions available
2582		try {
2583	<	assertEquals(null, h0.join());
2583	>	assertNull(h0.join());
2584		rs[0].assertValue(v1);
2585		} catch (CompletionException ok) {
2586		checkCompletedWithWrappedException(h0, ex);
2587		rs[0].assertNotInvoked();
2588		}
2589		try {
2590	<	assertEquals(null, h1.join());
2590	>	assertNull(h1.join());
2591		rs[1].assertValue(v1);
2592		} catch (CompletionException ok) {
2593		checkCompletedWithWrappedException(h1, ex);
2594		rs[1].assertNotInvoked();
2595		}
2596		try {
2597	<	assertEquals(null, h2.join());
2597	>	assertNull(h2.join());
2598		rs[2].assertValue(v1);
2599		} catch (CompletionException ok) {
2600		checkCompletedWithWrappedException(h2, ex);
2601		rs[2].assertNotInvoked();
2602		}
2603		try {
2604	<	assertEquals(null, h3.join());
2604	>	assertNull(h3.join());
2605		rs[3].assertValue(v1);
2606		} catch (CompletionException ok) {
2607		checkCompletedWithWrappedException(h3, ex);
#	Line 2609 | Line 2686 | public class CompletableFutureTest exten
2686		f.complete(v1);
2687		final CompletableFuture<Void> h2 = m.acceptEither(f, g, rs[2]);
2688		final CompletableFuture<Void> h3 = m.acceptEither(g, f, rs[3]);
2689	<	checkCompletedWithWrappedCFException(h0);
2690	<	checkCompletedWithWrappedCFException(h1);
2691	<	checkCompletedWithWrappedCFException(h2);
2692	<	checkCompletedWithWrappedCFException(h3);
2689	>	checkCompletedWithWrappedException(h0, rs[0].ex);
2690	>	checkCompletedWithWrappedException(h1, rs[1].ex);
2691	>	checkCompletedWithWrappedException(h2, rs[2].ex);
2692	>	checkCompletedWithWrappedException(h3, rs[3].ex);
2693		for (int i = 0; i < 4; i++) rs[i].assertValue(v1);
2694
2695		g.complete(v2);
#	Line 2621 | Line 2698 | public class CompletableFutureTest exten
2698		final CompletableFuture<Void> h4 = m.acceptEither(f, g, rs[4]);
2699		final CompletableFuture<Void> h5 = m.acceptEither(g, f, rs[5]);
2700
2701	<	checkCompletedWithWrappedCFException(h4);
2701	>	checkCompletedWithWrappedException(h4, rs[4].ex);
2702		assertTrue(Objects.equals(v1, rs[4].value) ||
2703		Objects.equals(v2, rs[4].value));
2704	<	checkCompletedWithWrappedCFException(h5);
2704	>	checkCompletedWithWrappedException(h5, rs[5].ex);
2705		assertTrue(Objects.equals(v1, rs[5].value) ||
2706		Objects.equals(v2, rs[5].value));
2707
#	Line 2640 | Line 2717 | public class CompletableFutureTest exten
2717		for (ExecutionMode m : ExecutionMode.values())
2718		for (Integer v1 : new Integer[] { 1, null })
2719		for (Integer v2 : new Integer[] { 2, null })
2720	+	for (boolean pushNop : new boolean[] { true, false })
2721		{
2722		final CompletableFuture<Integer> f = new CompletableFuture<>();
2723		final CompletableFuture<Integer> g = new CompletableFuture<>();
#	Line 2652 | Line 2730 | public class CompletableFutureTest exten
2730		checkIncomplete(h1);
2731		rs[0].assertNotInvoked();
2732		rs[1].assertNotInvoked();
2733	+	if (pushNop) {          // ad hoc test of intra-completion interference
2734	+	m.thenRun(f, () -> {});
2735	+	m.thenRun(g, () -> {});
2736	+	}
2737		f.complete(v1);
2738		checkCompletedNormally(h0, null);
2739		checkCompletedNormally(h1, null);
#	Line 2758 | Line 2840 | public class CompletableFutureTest exten
2840
2841		// unspecified behavior - both source completions available
2842		try {
2843	<	assertEquals(null, h0.join());
2843	>	assertNull(h0.join());
2844		rs[0].assertInvoked();
2845		} catch (CompletionException ok) {
2846		checkCompletedWithWrappedException(h0, ex);
2847		rs[0].assertNotInvoked();
2848		}
2849		try {
2850	<	assertEquals(null, h1.join());
2850	>	assertNull(h1.join());
2851		rs[1].assertInvoked();
2852		} catch (CompletionException ok) {
2853		checkCompletedWithWrappedException(h1, ex);
2854		rs[1].assertNotInvoked();
2855		}
2856		try {
2857	<	assertEquals(null, h2.join());
2857	>	assertNull(h2.join());
2858		rs[2].assertInvoked();
2859		} catch (CompletionException ok) {
2860		checkCompletedWithWrappedException(h2, ex);
2861		rs[2].assertNotInvoked();
2862		}
2863		try {
2864	<	assertEquals(null, h3.join());
2864	>	assertNull(h3.join());
2865		rs[3].assertInvoked();
2866		} catch (CompletionException ok) {
2867		checkCompletedWithWrappedException(h3, ex);
#	Line 2864 | Line 2946 | public class CompletableFutureTest exten
2946		assertTrue(f.complete(v1));
2947		final CompletableFuture<Void> h2 = m.runAfterEither(f, g, rs[2]);
2948		final CompletableFuture<Void> h3 = m.runAfterEither(g, f, rs[3]);
2949	<	checkCompletedWithWrappedCFException(h0);
2950	<	checkCompletedWithWrappedCFException(h1);
2951	<	checkCompletedWithWrappedCFException(h2);
2952	<	checkCompletedWithWrappedCFException(h3);
2949	>	checkCompletedWithWrappedException(h0, rs[0].ex);
2950	>	checkCompletedWithWrappedException(h1, rs[1].ex);
2951	>	checkCompletedWithWrappedException(h2, rs[2].ex);
2952	>	checkCompletedWithWrappedException(h3, rs[3].ex);
2953		for (int i = 0; i < 4; i++) rs[i].assertInvoked();
2954		assertTrue(g.complete(v2));
2955		final CompletableFuture<Void> h4 = m.runAfterEither(f, g, rs[4]);
2956		final CompletableFuture<Void> h5 = m.runAfterEither(g, f, rs[5]);
2957	<	checkCompletedWithWrappedCFException(h4);
2958	<	checkCompletedWithWrappedCFException(h5);
2957	>	checkCompletedWithWrappedException(h4, rs[4].ex);
2958	>	checkCompletedWithWrappedException(h5, rs[5].ex);
2959
2960		checkCompletedNormally(f, v1);
2961		checkCompletedNormally(g, v2);
#	Line 2934 | Line 3016 | public class CompletableFutureTest exten
3016		final CompletableFuture<Integer> g = m.thenCompose(f, r);
3017		if (createIncomplete) assertTrue(f.complete(v1));
3018
3019	<	checkCompletedWithWrappedCFException(g);
3019	>	checkCompletedWithWrappedException(g, r.ex);
3020		checkCompletedNormally(f, v1);
3021		}}
3022
#	Line 3043 | Line 3125 | public class CompletableFutureTest exten
3125		}
3126		}
3127
3128	<	public void testAllOf_backwards() throws Exception {
3128	>	public void testAllOf_normal_backwards() throws Exception {
3129		for (int k = 1; k < 10; k++) {
3130		CompletableFuture<Integer>[] fs
3131		= (CompletableFuture<Integer>[]) new CompletableFuture[k];
#	Line 3174 | Line 3256 | public class CompletableFutureTest exten
3256		/**
3257		* Completion methods throw NullPointerException with null arguments
3258		*/
3259	+	@SuppressWarnings("FutureReturnValueIgnored")
3260		public void testNPE() {
3261		CompletableFuture<Integer> f = new CompletableFuture<>();
3262		CompletableFuture<Integer> g = new CompletableFuture<>();
#	Line 3193 | Line 3276 | public class CompletableFutureTest exten
3276
3277		() -> f.thenApply(null),
3278		() -> f.thenApplyAsync(null),
3279	<	() -> f.thenApplyAsync((x) -> x, null),
3279	>	() -> f.thenApplyAsync(x -> x, null),
3280		() -> f.thenApplyAsync(null, exec),
3281
3282		() -> f.thenAccept(null),
3283		() -> f.thenAcceptAsync(null),
3284	<	() -> f.thenAcceptAsync((x) -> {} , null),
3284	>	() -> f.thenAcceptAsync(x -> {} , null),
3285		() -> f.thenAcceptAsync(null, exec),
3286
3287		() -> f.thenRun(null),
#	Line 3233 | Line 3316 | public class CompletableFutureTest exten
3316		() -> f.applyToEither(g, null),
3317		() -> f.applyToEitherAsync(g, null),
3318		() -> f.applyToEitherAsync(g, null, exec),
3319	<	() -> f.applyToEither(nullFuture, (x) -> x),
3320	<	() -> f.applyToEitherAsync(nullFuture, (x) -> x),
3321	<	() -> f.applyToEitherAsync(nullFuture, (x) -> x, exec),
3322	<	() -> f.applyToEitherAsync(g, (x) -> x, null),
3319	>	() -> f.applyToEither(nullFuture, x -> x),
3320	>	() -> f.applyToEitherAsync(nullFuture, x -> x),
3321	>	() -> f.applyToEitherAsync(nullFuture, x -> x, exec),
3322	>	() -> f.applyToEitherAsync(g, x -> x, null),
3323
3324		() -> f.acceptEither(g, null),
3325		() -> f.acceptEitherAsync(g, null),
3326		() -> f.acceptEitherAsync(g, null, exec),
3327	<	() -> f.acceptEither(nullFuture, (x) -> {}),
3328	<	() -> f.acceptEitherAsync(nullFuture, (x) -> {}),
3329	<	() -> f.acceptEitherAsync(nullFuture, (x) -> {}, exec),
3330	<	() -> f.acceptEitherAsync(g, (x) -> {}, null),
3327	>	() -> f.acceptEither(nullFuture, x -> {}),
3328	>	() -> f.acceptEitherAsync(nullFuture, x -> {}),
3329	>	() -> f.acceptEitherAsync(nullFuture, x -> {}, exec),
3330	>	() -> f.acceptEitherAsync(g, x -> {}, null),
3331
3332		() -> f.runAfterEither(g, null),
3333		() -> f.runAfterEitherAsync(g, null),
#	Line 3276 | Line 3359 | public class CompletableFutureTest exten
3359		() -> f.obtrudeException(null),
3360
3361		() -> CompletableFuture.delayedExecutor(1L, SECONDS, null),
3362	<	() -> CompletableFuture.delayedExecutor(1L, null, new ThreadExecutor()),
3362	>	() -> CompletableFuture.delayedExecutor(1L, null, exec),
3363		() -> CompletableFuture.delayedExecutor(1L, null),
3364
3365		() -> f.orTimeout(1L, null),
#	Line 3291 | Line 3374 | public class CompletableFutureTest exten
3374		}
3375
3376		/**
3377	+	* Test submissions to an executor that rejects all tasks.
3378	+	*/
3379	+	public void testRejectingExecutor() {
3380	+	for (Integer v : new Integer[] { 1, null })
3381	+	{
3382	+	final CountingRejectingExecutor e = new CountingRejectingExecutor();
3383	+
3384	+	final CompletableFuture<Integer> complete = CompletableFuture.completedFuture(v);
3385	+	final CompletableFuture<Integer> incomplete = new CompletableFuture<>();
3386	+
3387	+	List<CompletableFuture<?>> futures = new ArrayList<>();
3388	+
3389	+	List<CompletableFuture<Integer>> srcs = new ArrayList<>();
3390	+	srcs.add(complete);
3391	+	srcs.add(incomplete);
3392	+
3393	+	for (CompletableFuture<Integer> src : srcs) {
3394	+	List<CompletableFuture<?>> fs = new ArrayList<>();
3395	+	fs.add(src.thenRunAsync(() -> {}, e));
3396	+	fs.add(src.thenAcceptAsync(z -> {}, e));
3397	+	fs.add(src.thenApplyAsync(z -> z, e));
3398	+
3399	+	fs.add(src.thenCombineAsync(src, (x, y) -> x, e));
3400	+	fs.add(src.thenAcceptBothAsync(src, (x, y) -> {}, e));
3401	+	fs.add(src.runAfterBothAsync(src, () -> {}, e));
3402	+
3403	+	fs.add(src.applyToEitherAsync(src, z -> z, e));
3404	+	fs.add(src.acceptEitherAsync(src, z -> {}, e));
3405	+	fs.add(src.runAfterEitherAsync(src, () -> {}, e));
3406	+
3407	+	fs.add(src.thenComposeAsync(z -> null, e));
3408	+	fs.add(src.whenCompleteAsync((z, t) -> {}, e));
3409	+	fs.add(src.handleAsync((z, t) -> null, e));
3410	+
3411	+	for (CompletableFuture<?> future : fs) {
3412	+	if (src.isDone())
3413	+	checkCompletedWithWrappedException(future, e.ex);
3414	+	else
3415	+	checkIncomplete(future);
3416	+	}
3417	+	futures.addAll(fs);
3418	+	}
3419	+
3420	+	{
3421	+	List<CompletableFuture<?>> fs = new ArrayList<>();
3422	+
3423	+	fs.add(complete.thenCombineAsync(incomplete, (x, y) -> x, e));
3424	+	fs.add(incomplete.thenCombineAsync(complete, (x, y) -> x, e));
3425	+
3426	+	fs.add(complete.thenAcceptBothAsync(incomplete, (x, y) -> {}, e));
3427	+	fs.add(incomplete.thenAcceptBothAsync(complete, (x, y) -> {}, e));
3428	+
3429	+	fs.add(complete.runAfterBothAsync(incomplete, () -> {}, e));
3430	+	fs.add(incomplete.runAfterBothAsync(complete, () -> {}, e));
3431	+
3432	+	for (CompletableFuture<?> future : fs)
3433	+	checkIncomplete(future);
3434	+	futures.addAll(fs);
3435	+	}
3436	+
3437	+	{
3438	+	List<CompletableFuture<?>> fs = new ArrayList<>();
3439	+
3440	+	fs.add(complete.applyToEitherAsync(incomplete, z -> z, e));
3441	+	fs.add(incomplete.applyToEitherAsync(complete, z -> z, e));
3442	+
3443	+	fs.add(complete.acceptEitherAsync(incomplete, z -> {}, e));
3444	+	fs.add(incomplete.acceptEitherAsync(complete, z -> {}, e));
3445	+
3446	+	fs.add(complete.runAfterEitherAsync(incomplete, () -> {}, e));
3447	+	fs.add(incomplete.runAfterEitherAsync(complete, () -> {}, e));
3448	+
3449	+	for (CompletableFuture<?> future : fs)
3450	+	checkCompletedWithWrappedException(future, e.ex);
3451	+	futures.addAll(fs);
3452	+	}
3453	+
3454	+	incomplete.complete(v);
3455	+
3456	+	for (CompletableFuture<?> future : futures)
3457	+	checkCompletedWithWrappedException(future, e.ex);
3458	+
3459	+	assertEquals(futures.size(), e.count.get());
3460	+	}}
3461	+
3462	+	/**
3463	+	* Test submissions to an executor that rejects all tasks, but
3464	+	* should never be invoked because the dependent future is
3465	+	* explicitly completed.
3466	+	*/
3467	+	public void testRejectingExecutorNeverInvoked() {
3468	+	for (Integer v : new Integer[] { 1, null })
3469	+	{
3470	+	final CountingRejectingExecutor e = new CountingRejectingExecutor();
3471	+
3472	+	final CompletableFuture<Integer> complete = CompletableFuture.completedFuture(v);
3473	+	final CompletableFuture<Integer> incomplete = new CompletableFuture<>();
3474	+
3475	+	List<CompletableFuture<?>> futures = new ArrayList<>();
3476	+
3477	+	List<CompletableFuture<Integer>> srcs = new ArrayList<>();
3478	+	srcs.add(complete);
3479	+	srcs.add(incomplete);
3480	+
3481	+	List<CompletableFuture<?>> fs = new ArrayList<>();
3482	+	fs.add(incomplete.thenRunAsync(() -> {}, e));
3483	+	fs.add(incomplete.thenAcceptAsync(z -> {}, e));
3484	+	fs.add(incomplete.thenApplyAsync(z -> z, e));
3485	+
3486	+	fs.add(incomplete.thenCombineAsync(incomplete, (x, y) -> x, e));
3487	+	fs.add(incomplete.thenAcceptBothAsync(incomplete, (x, y) -> {}, e));
3488	+	fs.add(incomplete.runAfterBothAsync(incomplete, () -> {}, e));
3489	+
3490	+	fs.add(incomplete.applyToEitherAsync(incomplete, z -> z, e));
3491	+	fs.add(incomplete.acceptEitherAsync(incomplete, z -> {}, e));
3492	+	fs.add(incomplete.runAfterEitherAsync(incomplete, () -> {}, e));
3493	+
3494	+	fs.add(incomplete.thenComposeAsync(z -> null, e));
3495	+	fs.add(incomplete.whenCompleteAsync((z, t) -> {}, e));
3496	+	fs.add(incomplete.handleAsync((z, t) -> null, e));
3497	+
3498	+	fs.add(complete.thenCombineAsync(incomplete, (x, y) -> x, e));
3499	+	fs.add(incomplete.thenCombineAsync(complete, (x, y) -> x, e));
3500	+
3501	+	fs.add(complete.thenAcceptBothAsync(incomplete, (x, y) -> {}, e));
3502	+	fs.add(incomplete.thenAcceptBothAsync(complete, (x, y) -> {}, e));
3503	+
3504	+	fs.add(complete.runAfterBothAsync(incomplete, () -> {}, e));
3505	+	fs.add(incomplete.runAfterBothAsync(complete, () -> {}, e));
3506	+
3507	+	for (CompletableFuture<?> future : fs)
3508	+	checkIncomplete(future);
3509	+
3510	+	for (CompletableFuture<?> future : fs)
3511	+	future.complete(null);
3512	+
3513	+	incomplete.complete(v);
3514	+
3515	+	for (CompletableFuture<?> future : fs)
3516	+	checkCompletedNormally(future, null);
3517	+
3518	+	assertEquals(0, e.count.get());
3519	+	}}
3520	+
3521	+	/**
3522		* toCompletableFuture returns this CompletableFuture.
3523		*/
3524		public void testToCompletableFuture() {
#	Line 3323 | Line 3551 | public class CompletableFutureTest exten
3551		*/
3552		public void testCompletedStage() {
3553		AtomicInteger x = new AtomicInteger(0);
3554	<	AtomicReference<Throwable> r = new AtomicReference<Throwable>();
3554	>	AtomicReference<Throwable> r = new AtomicReference<>();
3555		CompletionStage<Integer> f = CompletableFuture.completedStage(1);
3556		f.whenComplete((v, e) -> {if (e != null) r.set(e); else x.set(v);});
3557		assertEquals(x.get(), 1);
#	Line 3368 | Line 3596 | public class CompletableFutureTest exten
3596		* copy returns a CompletableFuture that is completed normally,
3597		* with the same value, when source is.
3598		*/
3599	<	public void testCopy() {
3599	>	public void testCopy_normalCompletion() {
3600	>	for (boolean createIncomplete : new boolean[] { true, false })
3601	>	for (Integer v1 : new Integer[] { 1, null })
3602	>	{
3603		CompletableFuture<Integer> f = new CompletableFuture<>();
3604	+	if (!createIncomplete) assertTrue(f.complete(v1));
3605		CompletableFuture<Integer> g = f.copy();
3606	<	checkIncomplete(f);
3607	<	checkIncomplete(g);
3608	<	f.complete(1);
3609	<	checkCompletedNormally(f, 1);
3610	<	checkCompletedNormally(g, 1);
3611	<	}
3606	>	if (createIncomplete) {
3607	>	checkIncomplete(f);
3608	>	checkIncomplete(g);
3609	>	assertTrue(f.complete(v1));
3610	>	}
3611	>	checkCompletedNormally(f, v1);
3612	>	checkCompletedNormally(g, v1);
3613	>	}}
3614
3615		/**
3616		* copy returns a CompletableFuture that is completed exceptionally
3617		* when source is.
3618		*/
3619	<	public void testCopy2() {
3619	>	public void testCopy_exceptionalCompletion() {
3620	>	for (boolean createIncomplete : new boolean[] { true, false })
3621	>	{
3622	>	CFException ex = new CFException();
3623		CompletableFuture<Integer> f = new CompletableFuture<>();
3624	+	if (!createIncomplete) f.completeExceptionally(ex);
3625		CompletableFuture<Integer> g = f.copy();
3626	<	checkIncomplete(f);
3627	<	checkIncomplete(g);
3628	<	CFException ex = new CFException();
3629	<	f.completeExceptionally(ex);
3626	>	if (createIncomplete) {
3627	>	checkIncomplete(f);
3628	>	checkIncomplete(g);
3629	>	f.completeExceptionally(ex);
3630	>	}
3631		checkCompletedExceptionally(f, ex);
3632		checkCompletedWithWrappedException(g, ex);
3633	+	}}
3634	+
3635	+	/**
3636	+	* Completion of a copy does not complete its source.
3637	+	*/
3638	+	public void testCopy_oneWayPropagation() {
3639	+	CompletableFuture<Integer> f = new CompletableFuture<>();
3640	+	assertTrue(f.copy().complete(1));
3641	+	assertTrue(f.copy().complete(null));
3642	+	assertTrue(f.copy().cancel(true));
3643	+	assertTrue(f.copy().cancel(false));
3644	+	assertTrue(f.copy().completeExceptionally(new CFException()));
3645	+	checkIncomplete(f);
3646		}
3647
3648		/**
#	Line 3401 | Line 3653 | public class CompletableFutureTest exten
3653		CompletableFuture<Integer> f = new CompletableFuture<>();
3654		CompletionStage<Integer> g = f.minimalCompletionStage();
3655		AtomicInteger x = new AtomicInteger(0);
3656	<	AtomicReference<Throwable> r = new AtomicReference<Throwable>();
3656	>	AtomicReference<Throwable> r = new AtomicReference<>();
3657		checkIncomplete(f);
3658		g.whenComplete((v, e) -> {if (e != null) r.set(e); else x.set(v);});
3659		f.complete(1);
#	Line 3418 | Line 3670 | public class CompletableFutureTest exten
3670		CompletableFuture<Integer> f = new CompletableFuture<>();
3671		CompletionStage<Integer> g = f.minimalCompletionStage();
3672		AtomicInteger x = new AtomicInteger(0);
3673	<	AtomicReference<Throwable> r = new AtomicReference<Throwable>();
3673	>	AtomicReference<Throwable> r = new AtomicReference<>();
3674		g.whenComplete((v, e) -> {if (e != null) r.set(e); else x.set(v);});
3675		checkIncomplete(f);
3676		CFException ex = new CFException();
#	Line 3436 | Line 3688 | public class CompletableFutureTest exten
3688		CFException ex = new CFException();
3689		CompletionStage<Integer> f = CompletableFuture.failedStage(ex);
3690		AtomicInteger x = new AtomicInteger(0);
3691	<	AtomicReference<Throwable> r = new AtomicReference<Throwable>();
3691	>	AtomicReference<Throwable> r = new AtomicReference<>();
3692		f.whenComplete((v, e) -> {if (e != null) r.set(e); else x.set(v);});
3693		assertEquals(x.get(), 0);
3694		assertEquals(r.get(), ex);
#	Line 3460 | Line 3712 | public class CompletableFutureTest exten
3712		public void testCompleteAsync2() {
3713		CompletableFuture<Integer> f = new CompletableFuture<>();
3714		CFException ex = new CFException();
3715	<	f.completeAsync(() -> {if (true) throw ex; return 1;});
3715	>	f.completeAsync(() -> { throw ex; });
3716		try {
3717		f.join();
3718		shouldThrow();
#	Line 3490 | Line 3742 | public class CompletableFutureTest exten
3742		CompletableFuture<Integer> f = new CompletableFuture<>();
3743		CFException ex = new CFException();
3744		ThreadExecutor executor = new ThreadExecutor();
3745	<	f.completeAsync(() -> {if (true) throw ex; return 1;}, executor);
3745	>	f.completeAsync(() -> { throw ex; }, executor);
3746		try {
3747		f.join();
3748		shouldThrow();
#	Line 3506 | Line 3758 | public class CompletableFutureTest exten
3758		long timeoutMillis = timeoutMillis();
3759		CompletableFuture<Integer> f = new CompletableFuture<>();
3760		long startTime = System.nanoTime();
3761	<	f.orTimeout(timeoutMillis, MILLISECONDS);
3761	>	assertSame(f, f.orTimeout(timeoutMillis, MILLISECONDS));
3762		checkCompletedWithTimeoutException(f);
3763		assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
3764		}
#	Line 3521 | Line 3773 | public class CompletableFutureTest exten
3773		CompletableFuture<Integer> g = new CompletableFuture<>();
3774		long startTime = System.nanoTime();
3775		f.complete(v1);
3776	<	f.orTimeout(LONG_DELAY_MS, MILLISECONDS);
3777	<	g.orTimeout(LONG_DELAY_MS, MILLISECONDS);
3776	>	assertSame(f, f.orTimeout(LONG_DELAY_MS, MILLISECONDS));
3777	>	assertSame(g, g.orTimeout(LONG_DELAY_MS, MILLISECONDS));
3778		g.complete(v1);
3779		checkCompletedNormally(f, v1);
3780		checkCompletedNormally(g, v1);
#	Line 3537 | Line 3789 | public class CompletableFutureTest exten
3789		() -> testCompleteOnTimeout_timesOut(null));
3790		}
3791
3792	+	/**
3793	+	* completeOnTimeout completes with given value if not complete
3794	+	*/
3795		public void testCompleteOnTimeout_timesOut(Integer v) {
3796		long timeoutMillis = timeoutMillis();
3797		CompletableFuture<Integer> f = new CompletableFuture<>();
3798		long startTime = System.nanoTime();
3799	<	f.completeOnTimeout(v, timeoutMillis, MILLISECONDS);
3799	>	assertSame(f, f.completeOnTimeout(v, timeoutMillis, MILLISECONDS));
3800		assertSame(v, f.join());
3801		assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
3802		f.complete(99);         // should have no effect
#	Line 3558 | Line 3813 | public class CompletableFutureTest exten
3813		CompletableFuture<Integer> g = new CompletableFuture<>();
3814		long startTime = System.nanoTime();
3815		f.complete(v1);
3816	<	f.completeOnTimeout(-1, LONG_DELAY_MS, MILLISECONDS);
3817	<	g.completeOnTimeout(-1, LONG_DELAY_MS, MILLISECONDS);
3816	>	assertSame(f, f.completeOnTimeout(-1, LONG_DELAY_MS, MILLISECONDS));
3817	>	assertSame(g, g.completeOnTimeout(-1, LONG_DELAY_MS, MILLISECONDS));
3818		g.complete(v1);
3819		checkCompletedNormally(f, v1);
3820		checkCompletedNormally(g, v1);
#	Line 3610 | Line 3865 | public class CompletableFutureTest exten
3865		//--- tests of implementation details; not part of official tck ---
3866
3867		Object resultOf(CompletableFuture<?> f) {
3868	+	SecurityManager sm = System.getSecurityManager();
3869	+	if (sm != null) {
3870	+	try {
3871	+	System.setSecurityManager(null);
3872	+	} catch (SecurityException giveUp) {
3873	+	return "Reflection not available";
3874	+	}
3875	+	}
3876	+
3877		try {
3878		java.lang.reflect.Field resultField
3879		= CompletableFuture.class.getDeclaredField("result");
3880		resultField.setAccessible(true);
3881		return resultField.get(f);
3882	<	} catch (Throwable t) { throw new AssertionError(t); }
3882	>	} catch (Throwable t) {
3883	>	throw new AssertionError(t);
3884	>	} finally {
3885	>	if (sm != null) System.setSecurityManager(sm);
3886	>	}
3887		}
3888
3889		public void testExceptionPropagationReusesResultObject() {
#	Line 3626 | Line 3894 | public class CompletableFutureTest exten
3894		final CompletableFuture<Integer> v42 = CompletableFuture.completedFuture(42);
3895		final CompletableFuture<Integer> incomplete = new CompletableFuture<>();
3896
3897	+	final Runnable noopRunnable = new Noop(m);
3898	+	final Consumer<Integer> noopConsumer = new NoopConsumer(m);
3899	+	final Function<Integer, Integer> incFunction = new IncFunction(m);
3900	+
3901		List<Function<CompletableFuture<Integer>, CompletableFuture<?>>> funs
3902		= new ArrayList<>();
3903
3904	<	funs.add((y) -> m.thenRun(y, new Noop(m)));
3905	<	funs.add((y) -> m.thenAccept(y, new NoopConsumer(m)));
3906	<	funs.add((y) -> m.thenApply(y, new IncFunction(m)));
3907	<
3908	<	funs.add((y) -> m.runAfterEither(y, incomplete, new Noop(m)));
3909	<	funs.add((y) -> m.acceptEither(y, incomplete, new NoopConsumer(m)));
3910	<	funs.add((y) -> m.applyToEither(y, incomplete, new IncFunction(m)));
3911	<
3912	<	funs.add((y) -> m.runAfterBoth(y, v42, new Noop(m)));
3913	<	funs.add((y) -> m.thenAcceptBoth(y, v42, new SubtractAction(m)));
3914	<	funs.add((y) -> m.thenCombine(y, v42, new SubtractFunction(m)));
3915	<
3916	<	funs.add((y) -> m.whenComplete(y, (Integer x, Throwable t) -> {}));
3917	<
3918	<	funs.add((y) -> m.thenCompose(y, new CompletableFutureInc(m)));
3919	<
3920	<	funs.add((y) -> CompletableFuture.allOf(new CompletableFuture<?>[] {y, v42}));
3921	<	funs.add((y) -> CompletableFuture.anyOf(new CompletableFuture<?>[] {y, incomplete}));
3904	>	funs.add(y -> m.thenRun(y, noopRunnable));
3905	>	funs.add(y -> m.thenAccept(y, noopConsumer));
3906	>	funs.add(y -> m.thenApply(y, incFunction));
3907	>
3908	>	funs.add(y -> m.runAfterEither(y, incomplete, noopRunnable));
3909	>	funs.add(y -> m.acceptEither(y, incomplete, noopConsumer));
3910	>	funs.add(y -> m.applyToEither(y, incomplete, incFunction));
3911	>
3912	>	funs.add(y -> m.runAfterBoth(y, v42, noopRunnable));
3913	>	funs.add(y -> m.runAfterBoth(v42, y, noopRunnable));
3914	>	funs.add(y -> m.thenAcceptBoth(y, v42, new SubtractAction(m)));
3915	>	funs.add(y -> m.thenAcceptBoth(v42, y, new SubtractAction(m)));
3916	>	funs.add(y -> m.thenCombine(y, v42, new SubtractFunction(m)));
3917	>	funs.add(y -> m.thenCombine(v42, y, new SubtractFunction(m)));
3918	>
3919	>	funs.add(y -> m.whenComplete(y, (Integer r, Throwable t) -> {}));
3920	>
3921	>	funs.add(y -> m.thenCompose(y, new CompletableFutureInc(m)));
3922	>
3923	>	funs.add(y -> CompletableFuture.allOf(y));
3924	>	funs.add(y -> CompletableFuture.allOf(y, v42));
3925	>	funs.add(y -> CompletableFuture.allOf(v42, y));
3926	>	funs.add(y -> CompletableFuture.anyOf(y));
3927	>	funs.add(y -> CompletableFuture.anyOf(y, incomplete));
3928	>	funs.add(y -> CompletableFuture.anyOf(incomplete, y));
3929
3930		for (Function<CompletableFuture<Integer>, CompletableFuture<?>>
3931		fun : funs) {
3932		CompletableFuture<Integer> f = new CompletableFuture<>();
3933		f.completeExceptionally(ex);
3934	<	CompletableFuture<Integer> src = m.thenApply(f, new IncFunction(m));
3934	>	CompletableFuture<Integer> src = m.thenApply(f, incFunction);
3935		checkCompletedWithWrappedException(src, ex);
3936		CompletableFuture<?> dep = fun.apply(src);
3937		checkCompletedWithWrappedException(dep, ex);
#	Line 3662 | Line 3941 | public class CompletableFutureTest exten
3941		for (Function<CompletableFuture<Integer>, CompletableFuture<?>>
3942		fun : funs) {
3943		CompletableFuture<Integer> f = new CompletableFuture<>();
3944	<	CompletableFuture<Integer> src = m.thenApply(f, new IncFunction(m));
3944	>	CompletableFuture<Integer> src = m.thenApply(f, incFunction);
3945		CompletableFuture<?> dep = fun.apply(src);
3946		f.completeExceptionally(ex);
3947		checkCompletedWithWrappedException(src, ex);
#	Line 3676 | Line 3955 | public class CompletableFutureTest exten
3955		CompletableFuture<Integer> f = new CompletableFuture<>();
3956		f.cancel(mayInterruptIfRunning);
3957		checkCancelled(f);
3958	<	CompletableFuture<Integer> src = m.thenApply(f, new IncFunction(m));
3958	>	CompletableFuture<Integer> src = m.thenApply(f, incFunction);
3959		checkCompletedWithWrappedCancellationException(src);
3960		CompletableFuture<?> dep = fun.apply(src);
3961		checkCompletedWithWrappedCancellationException(dep);
#	Line 3687 | Line 3966 | public class CompletableFutureTest exten
3966		for (Function<CompletableFuture<Integer>, CompletableFuture<?>>
3967		fun : funs) {
3968		CompletableFuture<Integer> f = new CompletableFuture<>();
3969	<	CompletableFuture<Integer> src = m.thenApply(f, new IncFunction(m));
3969	>	CompletableFuture<Integer> src = m.thenApply(f, incFunction);
3970		CompletableFuture<?> dep = fun.apply(src);
3971		f.cancel(mayInterruptIfRunning);
3972		checkCancelled(f);
#	Line 3698 | Line 3977 | public class CompletableFutureTest exten
3977		}}
3978
3979		/**
3980	<	* Minimal completion stages throw UOE for all non-CompletionStage methods
3980	>	* Minimal completion stages throw UOE for most non-CompletionStage methods
3981		*/
3982		public void testMinimalCompletionStage_minimality() {
3983		if (!testImplementationDetails) return;
3984		Function<Method, String> toSignature =
3985	<	(method) -> method.getName() + Arrays.toString(method.getParameterTypes());
3985	>	method -> method.getName() + Arrays.toString(method.getParameterTypes());
3986		Predicate<Method> isNotStatic =
3987	<	(method) -> (method.getModifiers() & Modifier.STATIC) == 0;
3987	>	method -> (method.getModifiers() & Modifier.STATIC) == 0;
3988		List<Method> minimalMethods =
3989		Stream.of(Object.class, CompletionStage.class)
3990	<	.map((klazz) -> Stream.of(klazz.getMethods()))
3712	<	.reduce(Stream::concat)
3713	<	.orElseGet(Stream::empty)
3990	>	.flatMap(klazz -> Stream.of(klazz.getMethods()))
3991		.filter(isNotStatic)
3992		.collect(Collectors.toList());
3993		// Methods from CompletableFuture permitted NOT to throw UOE
#	Line 3726 | Line 4003 | public class CompletableFutureTest exten
4003		.collect(Collectors.toSet());
4004		List<Method> allMethods = Stream.of(CompletableFuture.class.getMethods())
4005		.filter(isNotStatic)
4006	<	.filter((method) -> !permittedMethodSignatures.contains(toSignature.apply(method)))
4006	>	.filter(method -> !permittedMethodSignatures.contains(toSignature.apply(method)))
4007		.collect(Collectors.toList());
4008
4009	<	CompletionStage<Integer> minimalStage =
4009	>	List<CompletionStage<Integer>> stages = new ArrayList<>();
4010	>	CompletionStage<Integer> min =
4011		new CompletableFuture<Integer>().minimalCompletionStage();
4012	+	stages.add(min);
4013	+	stages.add(min.thenApply(x -> x));
4014	+	stages.add(CompletableFuture.completedStage(1));
4015	+	stages.add(CompletableFuture.failedStage(new CFException()));
4016
4017		List<Method> bugs = new ArrayList<>();
4018		for (Method method : allMethods) {
#	Line 3746 | Line 4028 | public class CompletableFutureTest exten
4028		else if (parameterTypes[i] == long.class)
4029		args[i] = 0L;
4030		}
4031	<	try {
4032	<	method.invoke(minimalStage, args);
4033	<	bugs.add(method);
3752	<	}
3753	<	catch (java.lang.reflect.InvocationTargetException expected) {
3754	<	if (! (expected.getCause() instanceof UnsupportedOperationException)) {
4031	>	for (CompletionStage<Integer> stage : stages) {
4032	>	try {
4033	>	method.invoke(stage, args);
4034		bugs.add(method);
3756	–	// expected.getCause().printStackTrace();
4035		}
4036	+	catch (java.lang.reflect.InvocationTargetException expected) {
4037	+	if (! (expected.getCause() instanceof UnsupportedOperationException)) {
4038	+	bugs.add(method);
4039	+	// expected.getCause().printStackTrace();
4040	+	}
4041	+	}
4042	+	catch (ReflectiveOperationException bad) { throw new Error(bad); }
4043		}
3759	–	catch (ReflectiveOperationException bad) { throw new Error(bad); }
4044		}
4045		if (!bugs.isEmpty())
4046	<	throw new Error("Methods did not throw UOE: " + bugs.toString());
4046	>	throw new Error("Methods did not throw UOE: " + bugs);
4047	>	}
4048	>
4049	>	/**
4050	>	* minimalStage.toCompletableFuture() returns a CompletableFuture that
4051	>	* is completed normally, with the same value, when source is.
4052	>	*/
4053	>	public void testMinimalCompletionStage_toCompletableFuture_normalCompletion() {
4054	>	for (boolean createIncomplete : new boolean[] { true, false })
4055	>	for (Integer v1 : new Integer[] { 1, null })
4056	>	{
4057	>	CompletableFuture<Integer> f = new CompletableFuture<>();
4058	>	CompletionStage<Integer> minimal = f.minimalCompletionStage();
4059	>	if (!createIncomplete) assertTrue(f.complete(v1));
4060	>	CompletableFuture<Integer> g = minimal.toCompletableFuture();
4061	>	if (createIncomplete) {
4062	>	checkIncomplete(f);
4063	>	checkIncomplete(g);
4064	>	assertTrue(f.complete(v1));
4065	>	}
4066	>	checkCompletedNormally(f, v1);
4067	>	checkCompletedNormally(g, v1);
4068	>	}}
4069	>
4070	>	/**
4071	>	* minimalStage.toCompletableFuture() returns a CompletableFuture that
4072	>	* is completed exceptionally when source is.
4073	>	*/
4074	>	public void testMinimalCompletionStage_toCompletableFuture_exceptionalCompletion() {
4075	>	for (boolean createIncomplete : new boolean[] { true, false })
4076	>	{
4077	>	CFException ex = new CFException();
4078	>	CompletableFuture<Integer> f = new CompletableFuture<>();
4079	>	CompletionStage<Integer> minimal = f.minimalCompletionStage();
4080	>	if (!createIncomplete) f.completeExceptionally(ex);
4081	>	CompletableFuture<Integer> g = minimal.toCompletableFuture();
4082	>	if (createIncomplete) {
4083	>	checkIncomplete(f);
4084	>	checkIncomplete(g);
4085	>	f.completeExceptionally(ex);
4086	>	}
4087	>	checkCompletedExceptionally(f, ex);
4088	>	checkCompletedWithWrappedException(g, ex);
4089	>	}}
4090	>
4091	>	/**
4092	>	* minimalStage.toCompletableFuture() gives mutable CompletableFuture
4093	>	*/
4094	>	public void testMinimalCompletionStage_toCompletableFuture_mutable() {
4095	>	for (Integer v1 : new Integer[] { 1, null })
4096	>	{
4097	>	CompletableFuture<Integer> f = new CompletableFuture<>();
4098	>	CompletionStage minimal = f.minimalCompletionStage();
4099	>	CompletableFuture<Integer> g = minimal.toCompletableFuture();
4100	>	assertTrue(g.complete(v1));
4101	>	checkCompletedNormally(g, v1);
4102	>	checkIncomplete(f);
4103	>	checkIncomplete(minimal.toCompletableFuture());
4104	>	}}
4105	>
4106	>	/**
4107	>	* minimalStage.toCompletableFuture().join() awaits completion
4108	>	*/
4109	>	public void testMinimalCompletionStage_toCompletableFuture_join() throws Exception {
4110	>	for (boolean createIncomplete : new boolean[] { true, false })
4111	>	for (Integer v1 : new Integer[] { 1, null })
4112	>	{
4113	>	CompletableFuture<Integer> f = new CompletableFuture<>();
4114	>	if (!createIncomplete) assertTrue(f.complete(v1));
4115	>	CompletionStage<Integer> minimal = f.minimalCompletionStage();
4116	>	if (createIncomplete) assertTrue(f.complete(v1));
4117	>	assertEquals(v1, minimal.toCompletableFuture().join());
4118	>	assertEquals(v1, minimal.toCompletableFuture().get());
4119	>	checkCompletedNormally(minimal.toCompletableFuture(), v1);
4120	>	}}
4121	>
4122	>	/**
4123	>	* Completion of a toCompletableFuture copy of a minimal stage
4124	>	* does not complete its source.
4125	>	*/
4126	>	public void testMinimalCompletionStage_toCompletableFuture_oneWayPropagation() {
4127	>	CompletableFuture<Integer> f = new CompletableFuture<>();
4128	>	CompletionStage<Integer> g = f.minimalCompletionStage();
4129	>	assertTrue(g.toCompletableFuture().complete(1));
4130	>	assertTrue(g.toCompletableFuture().complete(null));
4131	>	assertTrue(g.toCompletableFuture().cancel(true));
4132	>	assertTrue(g.toCompletableFuture().cancel(false));
4133	>	assertTrue(g.toCompletableFuture().completeExceptionally(new CFException()));
4134	>	checkIncomplete(g.toCompletableFuture());
4135	>	f.complete(1);
4136	>	checkCompletedNormally(g.toCompletableFuture(), 1);
4137	>	}
4138	>
4139	>	/** Demo utility method for external reliable toCompletableFuture */
4140	>	static <T> CompletableFuture<T> toCompletableFuture(CompletionStage<T> stage) {
4141	>	CompletableFuture<T> f = new CompletableFuture<>();
4142	>	stage.handle((T t, Throwable ex) -> {
4143	>	if (ex != null) f.completeExceptionally(ex);
4144	>	else f.complete(t);
4145	>	return null;
4146	>	});
4147	>	return f;
4148	>	}
4149	>
4150	>	/** Demo utility method to join a CompletionStage */
4151	>	static <T> T join(CompletionStage<T> stage) {
4152	>	return toCompletableFuture(stage).join();
4153	>	}
4154	>
4155	>	/**
4156	>	* Joining a minimal stage "by hand" works
4157	>	*/
4158	>	public void testMinimalCompletionStage_join_by_hand() {
4159	>	for (boolean createIncomplete : new boolean[] { true, false })
4160	>	for (Integer v1 : new Integer[] { 1, null })
4161	>	{
4162	>	CompletableFuture<Integer> f = new CompletableFuture<>();
4163	>	CompletionStage<Integer> minimal = f.minimalCompletionStage();
4164	>	CompletableFuture<Integer> g = new CompletableFuture<>();
4165	>	if (!createIncomplete) assertTrue(f.complete(v1));
4166	>	minimal.thenAccept(x -> g.complete(x));
4167	>	if (createIncomplete) assertTrue(f.complete(v1));
4168	>	g.join();
4169	>	checkCompletedNormally(g, v1);
4170	>	checkCompletedNormally(f, v1);
4171	>	assertEquals(v1, join(minimal));
4172	>	}}
4173	>
4174	>	static class Monad {
4175	>	static class ZeroException extends RuntimeException {
4176	>	public ZeroException() { super("monadic zero"); }
4177	>	}
4178	>	// "return", "unit"
4179	>	static <T> CompletableFuture<T> unit(T value) {
4180	>	return completedFuture(value);
4181	>	}
4182	>	// monadic zero ?
4183	>	static <T> CompletableFuture<T> zero() {
4184	>	return failedFuture(new ZeroException());
4185	>	}
4186	>	// >=>
4187	>	static <T,U,V> Function<T, CompletableFuture<V>> compose
4188	>	(Function<T, CompletableFuture<U>> f,
4189	>	Function<U, CompletableFuture<V>> g) {
4190	>	return x -> f.apply(x).thenCompose(g);
4191	>	}
4192	>
4193	>	static void assertZero(CompletableFuture<?> f) {
4194	>	try {
4195	>	f.getNow(null);
4196	>	throw new AssertionError("should throw");
4197	>	} catch (CompletionException success) {
4198	>	assertTrue(success.getCause() instanceof ZeroException);
4199	>	}
4200	>	}
4201	>
4202	>	static <T> void assertFutureEquals(CompletableFuture<T> f,
4203	>	CompletableFuture<T> g) {
4204	>	T fval = null, gval = null;
4205	>	Throwable fex = null, gex = null;
4206	>
4207	>	try { fval = f.get(); }
4208	>	catch (ExecutionException ex) { fex = ex.getCause(); }
4209	>	catch (Throwable ex) { fex = ex; }
4210	>
4211	>	try { gval = g.get(); }
4212	>	catch (ExecutionException ex) { gex = ex.getCause(); }
4213	>	catch (Throwable ex) { gex = ex; }
4214	>
4215	>	if (fex != null || gex != null)
4216	>	assertSame(fex.getClass(), gex.getClass());
4217	>	else
4218	>	assertEquals(fval, gval);
4219	>	}
4220	>
4221	>	static class PlusFuture<T> extends CompletableFuture<T> {
4222	>	AtomicReference<Throwable> firstFailure = new AtomicReference<>(null);
4223	>	}
4224	>
4225	>	/** Implements "monadic plus". */
4226	>	static <T> CompletableFuture<T> plus(CompletableFuture<? extends T> f,
4227	>	CompletableFuture<? extends T> g) {
4228	>	PlusFuture<T> plus = new PlusFuture<T>();
4229	>	BiConsumer<T, Throwable> action = (T result, Throwable ex) -> {
4230	>	try {
4231	>	if (ex == null) {
4232	>	if (plus.complete(result))
4233	>	if (plus.firstFailure.get() != null)
4234	>	plus.firstFailure.set(null);
4235	>	}
4236	>	else if (plus.firstFailure.compareAndSet(null, ex)) {
4237	>	if (plus.isDone())
4238	>	plus.firstFailure.set(null);
4239	>	}
4240	>	else {
4241	>	// first failure has precedence
4242	>	Throwable first = plus.firstFailure.getAndSet(null);
4243	>
4244	>	// may fail with "Self-suppression not permitted"
4245	>	try { first.addSuppressed(ex); }
4246	>	catch (Exception ignored) {}
4247	>
4248	>	plus.completeExceptionally(first);
4249	>	}
4250	>	} catch (Throwable unexpected) {
4251	>	plus.completeExceptionally(unexpected);
4252	>	}
4253	>	};
4254	>	f.whenComplete(action);
4255	>	g.whenComplete(action);
4256	>	return plus;
4257	>	}
4258	>	}
4259	>
4260	>	/**
4261	>	* CompletableFuture is an additive monad - sort of.
4262	>	* https://en.wikipedia.org/wiki/Monad_(functional_programming)#Additive_monads
4263	>	*/
4264	>	public void testAdditiveMonad() throws Throwable {
4265	>	Function<Long, CompletableFuture<Long>> unit = Monad::unit;
4266	>	CompletableFuture<Long> zero = Monad.zero();
4267	>
4268	>	// Some mutually non-commutative functions
4269	>	Function<Long, CompletableFuture<Long>> triple
4270	>	= x -> Monad.unit(3 * x);
4271	>	Function<Long, CompletableFuture<Long>> inc
4272	>	= x -> Monad.unit(x + 1);
4273	>
4274	>	// unit is a right identity: m >>= unit === m
4275	>	Monad.assertFutureEquals(inc.apply(5L).thenCompose(unit),
4276	>	inc.apply(5L));
4277	>	// unit is a left identity: (unit x) >>= f === f x
4278	>	Monad.assertFutureEquals(unit.apply(5L).thenCompose(inc),
4279	>	inc.apply(5L));
4280	>
4281	>	// associativity: (m >>= f) >>= g === m >>= ( \x -> (f x >>= g) )
4282	>	Monad.assertFutureEquals(
4283	>	unit.apply(5L).thenCompose(inc).thenCompose(triple),
4284	>	unit.apply(5L).thenCompose(x -> inc.apply(x).thenCompose(triple)));
4285	>
4286	>	// The case for CompletableFuture as an additive monad is weaker...
4287	>
4288	>	// zero is a monadic zero
4289	>	Monad.assertZero(zero);
4290	>
4291	>	// left zero: zero >>= f === zero
4292	>	Monad.assertZero(zero.thenCompose(inc));
4293	>	// right zero: f >>= (\x -> zero) === zero
4294	>	Monad.assertZero(inc.apply(5L).thenCompose(x -> zero));
4295	>
4296	>	// f plus zero === f
4297	>	Monad.assertFutureEquals(Monad.unit(5L),
4298	>	Monad.plus(Monad.unit(5L), zero));
4299	>	// zero plus f === f
4300	>	Monad.assertFutureEquals(Monad.unit(5L),
4301	>	Monad.plus(zero, Monad.unit(5L)));
4302	>	// zero plus zero === zero
4303	>	Monad.assertZero(Monad.plus(zero, zero));
4304	>	{
4305	>	CompletableFuture<Long> f = Monad.plus(Monad.unit(5L),
4306	>	Monad.unit(8L));
4307	>	// non-determinism
4308	>	assertTrue(f.get() == 5L || f.get() == 8L);
4309	>	}
4310	>
4311	>	CompletableFuture<Long> godot = new CompletableFuture<>();
4312	>	// f plus godot === f (doesn't wait for godot)
4313	>	Monad.assertFutureEquals(Monad.unit(5L),
4314	>	Monad.plus(Monad.unit(5L), godot));
4315	>	// godot plus f === f (doesn't wait for godot)
4316	>	Monad.assertFutureEquals(Monad.unit(5L),
4317	>	Monad.plus(godot, Monad.unit(5L)));
4318	>	}
4319	>
4320	>	/** Test long recursive chains of CompletableFutures with cascading completions */
4321	>	@SuppressWarnings("FutureReturnValueIgnored")
4322	>	public void testRecursiveChains() throws Throwable {
4323	>	for (ExecutionMode m : ExecutionMode.values())
4324	>	for (boolean addDeadEnds : new boolean[] { true, false })
4325	>	{
4326	>	final int val = 42;
4327	>	final int n = expensiveTests ? 1_000 : 2;
4328	>	CompletableFuture<Integer> head = new CompletableFuture<>();
4329	>	CompletableFuture<Integer> tail = head;
4330	>	for (int i = 0; i < n; i++) {
4331	>	if (addDeadEnds) m.thenApply(tail, v -> v + 1);
4332	>	tail = m.thenApply(tail, v -> v + 1);
4333	>	if (addDeadEnds) m.applyToEither(tail, tail, v -> v + 1);
4334	>	tail = m.applyToEither(tail, tail, v -> v + 1);
4335	>	if (addDeadEnds) m.thenCombine(tail, tail, (v, w) -> v + 1);
4336	>	tail = m.thenCombine(tail, tail, (v, w) -> v + 1);
4337	>	}
4338	>	head.complete(val);
4339	>	assertEquals(val + 3 * n, (int) tail.join());
4340	>	}}
4341	>
4342	>	/**
4343	>	* A single CompletableFuture with many dependents.
4344	>	* A demo of scalability - runtime is O(n).
4345	>	*/
4346	>	@SuppressWarnings("FutureReturnValueIgnored")
4347	>	public void testManyDependents() throws Throwable {
4348	>	final int n = expensiveTests ? 1_000_000 : 10;
4349	>	final CompletableFuture<Void> head = new CompletableFuture<>();
4350	>	final CompletableFuture<Void> complete = CompletableFuture.completedFuture((Void)null);
4351	>	final AtomicInteger count = new AtomicInteger(0);
4352	>	for (int i = 0; i < n; i++) {
4353	>	head.thenRun(() -> count.getAndIncrement());
4354	>	head.thenAccept(x -> count.getAndIncrement());
4355	>	head.thenApply(x -> count.getAndIncrement());
4356	>
4357	>	head.runAfterBoth(complete, () -> count.getAndIncrement());
4358	>	head.thenAcceptBoth(complete, (x, y) -> count.getAndIncrement());
4359	>	head.thenCombine(complete, (x, y) -> count.getAndIncrement());
4360	>	complete.runAfterBoth(head, () -> count.getAndIncrement());
4361	>	complete.thenAcceptBoth(head, (x, y) -> count.getAndIncrement());
4362	>	complete.thenCombine(head, (x, y) -> count.getAndIncrement());
4363	>
4364	>	head.runAfterEither(new CompletableFuture<Void>(), () -> count.getAndIncrement());
4365	>	head.acceptEither(new CompletableFuture<Void>(), x -> count.getAndIncrement());
4366	>	head.applyToEither(new CompletableFuture<Void>(), x -> count.getAndIncrement());
4367	>	new CompletableFuture<Void>().runAfterEither(head, () -> count.getAndIncrement());
4368	>	new CompletableFuture<Void>().acceptEither(head, x -> count.getAndIncrement());
4369	>	new CompletableFuture<Void>().applyToEither(head, x -> count.getAndIncrement());
4370	>	}
4371	>	head.complete(null);
4372	>	assertEquals(5 * 3 * n, count.get());
4373	>	}
4374	>
4375	>	/** ant -Dvmoptions=-Xmx8m -Djsr166.expensiveTests=true -Djsr166.tckTestClass=CompletableFutureTest tck */
4376	>	@SuppressWarnings("FutureReturnValueIgnored")
4377	>	public void testCoCompletionGarbageRetention() throws Throwable {
4378	>	final int n = expensiveTests ? 1_000_000 : 10;
4379	>	final CompletableFuture<Integer> incomplete = new CompletableFuture<>();
4380	>	CompletableFuture<Integer> f;
4381	>	for (int i = 0; i < n; i++) {
4382	>	f = new CompletableFuture<>();
4383	>	f.runAfterEither(incomplete, () -> {});
4384	>	f.complete(null);
4385	>
4386	>	f = new CompletableFuture<>();
4387	>	f.acceptEither(incomplete, x -> {});
4388	>	f.complete(null);
4389	>
4390	>	f = new CompletableFuture<>();
4391	>	f.applyToEither(incomplete, x -> x);
4392	>	f.complete(null);
4393	>
4394	>	f = new CompletableFuture<>();
4395	>	CompletableFuture.anyOf(f, incomplete);
4396	>	f.complete(null);
4397	>	}
4398	>
4399	>	for (int i = 0; i < n; i++) {
4400	>	f = new CompletableFuture<>();
4401	>	incomplete.runAfterEither(f, () -> {});
4402	>	f.complete(null);
4403	>
4404	>	f = new CompletableFuture<>();
4405	>	incomplete.acceptEither(f, x -> {});
4406	>	f.complete(null);
4407	>
4408	>	f = new CompletableFuture<>();
4409	>	incomplete.applyToEither(f, x -> x);
4410	>	f.complete(null);
4411	>
4412	>	f = new CompletableFuture<>();
4413	>	CompletableFuture.anyOf(incomplete, f);
4414	>	f.complete(null);
4415	>	}
4416	>	}
4417	>
4418	>	/**
4419	>	* Reproduction recipe for:
4420	>	* 8160402: Garbage retention with CompletableFuture.anyOf
4421	>	* cvs update -D '2016-05-01' ./src/main/java/util/concurrent/CompletableFuture.java && ant -Dvmoptions=-Xmx8m -Djsr166.expensiveTests=true -Djsr166.tckTestClass=CompletableFutureTest -Djsr166.methodFilter=testAnyOfGarbageRetention tck; cvs update -A
4422	>	*/
4423	>	public void testAnyOfGarbageRetention() throws Throwable {
4424	>	for (Integer v : new Integer[] { 1, null })
4425	>	{
4426	>	final int n = expensiveTests ? 100_000 : 10;
4427	>	CompletableFuture<Integer>[] fs
4428	>	= (CompletableFuture<Integer>[]) new CompletableFuture<?>[100];
4429	>	for (int i = 0; i < fs.length; i++)
4430	>	fs[i] = new CompletableFuture<>();
4431	>	fs[fs.length - 1].complete(v);
4432	>	for (int i = 0; i < n; i++)
4433	>	checkCompletedNormally(CompletableFuture.anyOf(fs), v);
4434	>	}}
4435	>
4436	>	/**
4437	>	* Checks for garbage retention with allOf.
4438	>	*
4439	>	* As of 2016-07, fails with OOME:
4440	>	* ant -Dvmoptions=-Xmx8m -Djsr166.expensiveTests=true -Djsr166.tckTestClass=CompletableFutureTest -Djsr166.methodFilter=testCancelledAllOfGarbageRetention tck
4441	>	*/
4442	>	public void testCancelledAllOfGarbageRetention() throws Throwable {
4443	>	final int n = expensiveTests ? 100_000 : 10;
4444	>	CompletableFuture<Integer>[] fs
4445	>	= (CompletableFuture<Integer>[]) new CompletableFuture<?>[100];
4446	>	for (int i = 0; i < fs.length; i++)
4447	>	fs[i] = new CompletableFuture<>();
4448	>	for (int i = 0; i < n; i++)
4449	>	assertTrue(CompletableFuture.allOf(fs).cancel(false));
4450	>	}
4451	>
4452	>	/**
4453	>	* Checks for garbage retention when a dependent future is
4454	>	* cancelled and garbage-collected.
4455	>	* 8161600: Garbage retention when source CompletableFutures are never completed
4456	>	*
4457	>	* As of 2016-07, fails with OOME:
4458	>	* ant -Dvmoptions=-Xmx8m -Djsr166.expensiveTests=true -Djsr166.tckTestClass=CompletableFutureTest -Djsr166.methodFilter=testCancelledGarbageRetention tck
4459	>	*/
4460	>	public void testCancelledGarbageRetention() throws Throwable {
4461	>	final int n = expensiveTests ? 100_000 : 10;
4462	>	CompletableFuture<Integer> neverCompleted = new CompletableFuture<>();
4463	>	for (int i = 0; i < n; i++)
4464	>	assertTrue(neverCompleted.thenRun(() -> {}).cancel(true));
4465	>	}
4466	>
4467	>	/**
4468	>	* Checks for garbage retention when MinimalStage.toCompletableFuture()
4469	>	* is invoked many times.
4470	>	* 8161600: Garbage retention when source CompletableFutures are never completed
4471	>	*
4472	>	* As of 2016-07, fails with OOME:
4473	>	* ant -Dvmoptions=-Xmx8m -Djsr166.expensiveTests=true -Djsr166.tckTestClass=CompletableFutureTest -Djsr166.methodFilter=testToCompletableFutureGarbageRetention tck
4474	>	*/
4475	>	public void testToCompletableFutureGarbageRetention() throws Throwable {
4476	>	final int n = expensiveTests ? 900_000 : 10;
4477	>	CompletableFuture<Integer> neverCompleted = new CompletableFuture<>();
4478	>	CompletionStage minimal = neverCompleted.minimalCompletionStage();
4479	>	for (int i = 0; i < n; i++)
4480	>	assertTrue(minimal.toCompletableFuture().cancel(true));
4481		}
4482
4483		//     static <U> U join(CompletionStage<U> stage) {

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