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

Comparing jsr166/src/test/tck/CompletableFutureTest.java (file contents):
Revision 1.85 by jsr166, Mon Jun 16 20:44:14 2014 UTC vs.
Revision 1.221 by jsr166, Fri Feb 22 19:27:47 2019 UTC

#	Line 5 | Line 5
5		* http://creativecommons.org/publicdomain/zero/1.0/
6		*/
7
8	<	import junit.framework.*;
8	>	import static java.util.concurrent.TimeUnit.MILLISECONDS;
9	>	import static java.util.concurrent.TimeUnit.SECONDS;
10	>	import static java.util.concurrent.CompletableFuture.completedFuture;
11	>	import static java.util.concurrent.CompletableFuture.failedFuture;
12	>
13	>	import java.lang.reflect.Method;
14	>	import java.lang.reflect.Modifier;
15	>
16	>	import java.util.stream.Collectors;
17	>	import java.util.stream.Stream;
18	>
19	>	import java.util.ArrayList;
20	>	import java.util.Arrays;
21	>	import java.util.List;
22	>	import java.util.Objects;
23	>	import java.util.Set;
24		import java.util.concurrent.Callable;
10	–	import java.util.concurrent.Executor;
11	–	import java.util.concurrent.ExecutorService;
12	–	import java.util.concurrent.Executors;
25		import java.util.concurrent.CancellationException;
14	–	import java.util.concurrent.CountDownLatch;
15	–	import java.util.concurrent.ExecutionException;
16	–	import java.util.concurrent.Future;
26		import java.util.concurrent.CompletableFuture;
27		import java.util.concurrent.CompletionException;
28		import java.util.concurrent.CompletionStage;
29	+	import java.util.concurrent.ExecutionException;
30	+	import java.util.concurrent.Executor;
31		import java.util.concurrent.ForkJoinPool;
32		import java.util.concurrent.ForkJoinTask;
33	+	import java.util.concurrent.RejectedExecutionException;
34		import java.util.concurrent.TimeoutException;
35		import java.util.concurrent.atomic.AtomicInteger;
36	<	import static java.util.concurrent.TimeUnit.MILLISECONDS;
25	<	import static java.util.concurrent.TimeUnit.SECONDS;
26	<	import java.util.*;
27	<	import java.util.function.Supplier;
28	<	import java.util.function.Consumer;
36	>	import java.util.concurrent.atomic.AtomicReference;
37		import java.util.function.BiConsumer;
30	–	import java.util.function.Function;
38		import java.util.function.BiFunction;
39	+	import java.util.function.Consumer;
40	+	import java.util.function.Function;
41	+	import java.util.function.Predicate;
42	+	import java.util.function.Supplier;
43	+
44	+	import junit.framework.Test;
45	+	import junit.framework.TestSuite;
46
47		public class CompletableFutureTest extends JSR166TestCase {
48
49		public static void main(String[] args) {
50	<	junit.textui.TestRunner.run(suite());
50	>	main(suite(), args);
51		}
52		public static Test suite() {
53		return new TestSuite(CompletableFutureTest.class);
#	Line 44 | 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) {}
74		catch (Throwable fail) { threadUnexpectedException(fail); }
75		}
76
77	<	<T> void checkCompletedNormally(CompletableFuture<T> f, T value) {
78	<	try {
79	<	assertEquals(value, f.get(LONG_DELAY_MS, MILLISECONDS));
80	<	} catch (Throwable fail) { threadUnexpectedException(fail); }
81	<	try {
82	<	assertEquals(value, f.join());
83	<	} catch (Throwable fail) { threadUnexpectedException(fail); }
66	<	try {
67	<	assertEquals(value, f.getNow(null));
68	<	} catch (Throwable fail) { threadUnexpectedException(fail); }
77	>	<T> void checkCompletedNormally(CompletableFuture<T> f, T expectedValue) {
78	>	checkTimedGet(f, expectedValue);
79	>
80	>	assertEquals(expectedValue, f.join());
81	>	assertEquals(expectedValue, f.getNow(null));
82	>
83	>	T result = null;
84		try {
85	<	assertEquals(value, f.get());
85	>	result = f.get();
86		} catch (Throwable fail) { threadUnexpectedException(fail); }
87	+	assertEquals(expectedValue, result);
88	+
89		assertTrue(f.isDone());
90		assertFalse(f.isCancelled());
91		assertFalse(f.isCompletedExceptionally());
92	<	assertTrue(f.toString().contains("[Completed normally]"));
92	>	assertTrue(f.toString().matches(".*\\[.*Completed normally.*\\]"));
93		}
94
95	<	void checkCompletedWithWrappedCFException(CompletableFuture<?> f) {
96	<	try {
97	<	f.get(LONG_DELAY_MS, MILLISECONDS);
98	<	shouldThrow();
99	<	} catch (ExecutionException success) {
100	<	assertTrue(success.getCause() instanceof CFException);
101	<	} catch (Throwable fail) { threadUnexpectedException(fail); }
102	<	try {
86	<	f.join();
87	<	shouldThrow();
88	<	} catch (CompletionException success) {
89	<	assertTrue(success.getCause() instanceof CFException);
90	<	}
91	<	try {
92	<	f.getNow(null);
93	<	shouldThrow();
94	<	} catch (CompletionException success) {
95	<	assertTrue(success.getCause() instanceof CFException);
96	<	}
97	<	try {
98	<	f.get();
99	<	shouldThrow();
100	<	} catch (ExecutionException success) {
101	<	assertTrue(success.getCause() instanceof CFException);
102	<	} catch (Throwable fail) { threadUnexpectedException(fail); }
103	<	assertTrue(f.isDone());
104	<	assertFalse(f.isCancelled());
105	<	assertTrue(f.toString().contains("[Completed exceptionally]"));
95	>	/**
96	>	* Returns the "raw" internal exceptional completion of f,
97	>	* without any additional wrapping with CompletionException.
98	>	*/
99	>	Throwable exceptionalCompletion(CompletableFuture<?> f) {
100	>	// handle (and whenComplete and exceptionally) can distinguish
101	>	// between "direct" and "wrapped" exceptional completion
102	>	return f.handle((u, t) -> t).join();
103		}
104
105	<	<U> void checkCompletedExceptionallyWithRootCause(CompletableFuture<U> f,
106	<	Throwable ex) {
105	>	void checkCompletedExceptionally(CompletableFuture<?> f,
106	>	boolean wrapped,
107	>	Consumer<Throwable> checker) {
108	>	Throwable cause = exceptionalCompletion(f);
109	>	if (wrapped) {
110	>	assertTrue(cause instanceof CompletionException);
111	>	cause = cause.getCause();
112	>	}
113	>	checker.accept(cause);
114	>
115	>	long startTime = System.nanoTime();
116		try {
117		f.get(LONG_DELAY_MS, MILLISECONDS);
118		shouldThrow();
119		} catch (ExecutionException success) {
120	<	assertSame(ex, success.getCause());
120	>	assertSame(cause, success.getCause());
121		} catch (Throwable fail) { threadUnexpectedException(fail); }
122	+	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS / 2);
123	+
124		try {
125		f.join();
126		shouldThrow();
127		} catch (CompletionException success) {
128	<	assertSame(ex, success.getCause());
129	<	}
128	>	assertSame(cause, success.getCause());
129	>	} catch (Throwable fail) { threadUnexpectedException(fail); }
130	>
131		try {
132		f.getNow(null);
133		shouldThrow();
134		} catch (CompletionException success) {
135	<	assertSame(ex, success.getCause());
136	<	}
135	>	assertSame(cause, success.getCause());
136	>	} catch (Throwable fail) { threadUnexpectedException(fail); }
137	>
138		try {
139		f.get();
140		shouldThrow();
141		} catch (ExecutionException success) {
142	<	assertSame(ex, success.getCause());
142	>	assertSame(cause, success.getCause());
143		} catch (Throwable fail) { threadUnexpectedException(fail); }
144
135	–	assertTrue(f.isDone());
145		assertFalse(f.isCancelled());
146	<	assertTrue(f.toString().contains("[Completed exceptionally]"));
146	>	assertTrue(f.isDone());
147	>	assertTrue(f.isCompletedExceptionally());
148	>	assertTrue(f.toString().matches(".*\\[.*Completed exceptionally.*\\]"));
149		}
150
151	<	<U> void checkCompletedWithWrappedException(CompletableFuture<U> f,
152	<	Throwable ex) {
153	<	checkCompletedExceptionallyWithRootCause(f, ex);
143	<	try {
144	<	CompletableFuture<Throwable> spy = f.handle
145	<	((U u, Throwable t) -> t);
146	<	assertTrue(spy.join() instanceof CompletionException);
147	<	assertSame(ex, spy.join().getCause());
148	<	} catch (Throwable fail) { threadUnexpectedException(fail); }
151	>	void checkCompletedWithWrappedCFException(CompletableFuture<?> f) {
152	>	checkCompletedExceptionally(f, true,
153	>	t -> assertTrue(t instanceof CFException));
154		}
155
156	<	<U> void checkCompletedExceptionally(CompletableFuture<U> f, Throwable ex) {
157	<	checkCompletedExceptionallyWithRootCause(f, ex);
158	<	try {
159	<	CompletableFuture<Throwable> spy = f.handle
160	<	((U u, Throwable t) -> t);
161	<	assertSame(ex, spy.join());
162	<	} catch (Throwable fail) { threadUnexpectedException(fail); }
156	>	void checkCompletedWithWrappedCancellationException(CompletableFuture<?> f) {
157	>	checkCompletedExceptionally(f, true,
158	>	t -> assertTrue(t instanceof CancellationException));
159	>	}
160	>
161	>	void checkCompletedWithTimeoutException(CompletableFuture<?> f) {
162	>	checkCompletedExceptionally(f, false,
163	>	t -> assertTrue(t instanceof TimeoutException));
164	>	}
165	>
166	>	void checkCompletedWithWrappedException(CompletableFuture<?> f,
167	>	Throwable ex) {
168	>	checkCompletedExceptionally(f, true, t -> assertSame(t, ex));
169	>	}
170	>
171	>	void checkCompletedExceptionally(CompletableFuture<?> f, Throwable ex) {
172	>	checkCompletedExceptionally(f, false, t -> assertSame(t, ex));
173		}
174
175		void checkCancelled(CompletableFuture<?> f) {
176	+	long startTime = System.nanoTime();
177		try {
178		f.get(LONG_DELAY_MS, MILLISECONDS);
179		shouldThrow();
180		} catch (CancellationException success) {
181		} catch (Throwable fail) { threadUnexpectedException(fail); }
182	+	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS / 2);
183	+
184		try {
185		f.join();
186		shouldThrow();
#	Line 176 | Line 194 | public class CompletableFutureTest exten
194		shouldThrow();
195		} catch (CancellationException success) {
196		} catch (Throwable fail) { threadUnexpectedException(fail); }
179	–	assertTrue(f.isDone());
180	–	assertTrue(f.isCompletedExceptionally());
181	–	assertTrue(f.isCancelled());
182	–	assertTrue(f.toString().contains("[Completed exceptionally]"));
183	–	}
197
198	<	void checkCompletedWithWrappedCancellationException(CompletableFuture<?> f) {
199	<	try {
187	<	f.get(LONG_DELAY_MS, MILLISECONDS);
188	<	shouldThrow();
189	<	} catch (ExecutionException success) {
190	<	assertTrue(success.getCause() instanceof CancellationException);
191	<	} catch (Throwable fail) { threadUnexpectedException(fail); }
192	<	try {
193	<	f.join();
194	<	shouldThrow();
195	<	} catch (CompletionException success) {
196	<	assertTrue(success.getCause() instanceof CancellationException);
197	<	}
198	<	try {
199	<	f.getNow(null);
200	<	shouldThrow();
201	<	} catch (CompletionException success) {
202	<	assertTrue(success.getCause() instanceof CancellationException);
203	<	}
204	<	try {
205	<	f.get();
206	<	shouldThrow();
207	<	} catch (ExecutionException success) {
208	<	assertTrue(success.getCause() instanceof CancellationException);
209	<	} catch (Throwable fail) { threadUnexpectedException(fail); }
198	>	assertTrue(exceptionalCompletion(f) instanceof CancellationException);
199	>
200		assertTrue(f.isDone());
211	–	assertFalse(f.isCancelled());
201		assertTrue(f.isCompletedExceptionally());
202	<	assertTrue(f.toString().contains("[Completed exceptionally]"));
202	>	assertTrue(f.isCancelled());
203	>	assertTrue(f.toString().matches(".*\\[.*Completed exceptionally.*\\]"));
204		}
205
206		/**
#	Line 257 | Line 247 | public class CompletableFutureTest exten
247		{
248		CompletableFuture<Integer> f = new CompletableFuture<>();
249		checkIncomplete(f);
250	<	assertTrue(f.cancel(true));
251	<	assertTrue(f.cancel(true));
250	>	assertTrue(f.cancel(mayInterruptIfRunning));
251	>	assertTrue(f.cancel(mayInterruptIfRunning));
252	>	assertTrue(f.cancel(!mayInterruptIfRunning));
253		checkCancelled(f);
254		}}
255
#	Line 308 | Line 299 | public class CompletableFutureTest exten
299		}
300
301		f = new CompletableFuture<>();
302	<	f.completeExceptionally(ex = new CFException());
302	>	f.completeExceptionally(new CFException());
303		f.obtrudeValue(v1);
304		checkCompletedNormally(f, v1);
305		f.obtrudeException(ex = new CFException());
#	Line 345 | Line 336 | public class CompletableFutureTest exten
336		/**
337		* toString indicates current completion state
338		*/
339	<	public void testToString() {
340	<	CompletableFuture<String> f;
341	<
342	<	f = new CompletableFuture<String>();
343	<	assertTrue(f.toString().contains("[Not completed]"));
339	>	public void testToString_incomplete() {
340	>	CompletableFuture<String> f = new CompletableFuture<>();
341	>	assertTrue(f.toString().matches(".*\\[.*Not completed.*\\]"));
342	>	if (testImplementationDetails)
343	>	assertEquals(identityString(f) + "[Not completed]",
344	>	f.toString());
345	>	}
346
347	+	public void testToString_normal() {
348	+	CompletableFuture<String> f = new CompletableFuture<>();
349		assertTrue(f.complete("foo"));
350	<	assertTrue(f.toString().contains("[Completed normally]"));
350	>	assertTrue(f.toString().matches(".*\\[.*Completed normally.*\\]"));
351	>	if (testImplementationDetails)
352	>	assertEquals(identityString(f) + "[Completed normally]",
353	>	f.toString());
354	>	}
355
356	<	f = new CompletableFuture<String>();
356	>	public void testToString_exception() {
357	>	CompletableFuture<String> f = new CompletableFuture<>();
358		assertTrue(f.completeExceptionally(new IndexOutOfBoundsException()));
359	<	assertTrue(f.toString().contains("[Completed exceptionally]"));
359	>	assertTrue(f.toString().matches(".*\\[.*Completed exceptionally.*\\]"));
360	>	if (testImplementationDetails)
361	>	assertTrue(f.toString().startsWith(
362	>	identityString(f) + "[Completed exceptionally: "));
363	>	}
364
365	+	public void testToString_cancelled() {
366		for (boolean mayInterruptIfRunning : new boolean[] { true, false }) {
367	<	f = new CompletableFuture<String>();
367	>	CompletableFuture<String> f = new CompletableFuture<>();
368		assertTrue(f.cancel(mayInterruptIfRunning));
369	<	assertTrue(f.toString().contains("[Completed exceptionally]"));
369	>	assertTrue(f.toString().matches(".*\\[.*Completed exceptionally.*\\]"));
370	>	if (testImplementationDetails)
371	>	assertTrue(f.toString().startsWith(
372	>	identityString(f) + "[Completed exceptionally: "));
373		}
374		}
375
#	Line 373 | Line 381 | public class CompletableFutureTest exten
381		checkCompletedNormally(f, "test");
382		}
383
384	<	abstract class CheckedAction {
384	>	abstract static class CheckedAction {
385		int invocationCount = 0;
386		final ExecutionMode m;
387		CheckedAction(ExecutionMode m) { this.m = m; }
#	Line 385 | Line 393 | public class CompletableFutureTest exten
393		void assertInvoked() { assertEquals(1, invocationCount); }
394		}
395
396	<	abstract class CheckedIntegerAction extends CheckedAction {
396	>	abstract static class CheckedIntegerAction extends CheckedAction {
397		Integer value;
398		CheckedIntegerAction(ExecutionMode m) { super(m); }
399		void assertValue(Integer expected) {
#	Line 394 | Line 402 | public class CompletableFutureTest exten
402		}
403		}
404
405	<	class IntegerSupplier extends CheckedAction
405	>	static class IntegerSupplier extends CheckedAction
406		implements Supplier<Integer>
407		{
408		final Integer value;
#	Line 413 | Line 421 | public class CompletableFutureTest exten
421		return (x == null) ? null : x + 1;
422		}
423
424	<	class NoopConsumer extends CheckedIntegerAction
424	>	static class NoopConsumer extends CheckedIntegerAction
425		implements Consumer<Integer>
426		{
427		NoopConsumer(ExecutionMode m) { super(m); }
#	Line 423 | Line 431 | public class CompletableFutureTest exten
431		}
432		}
433
434	<	class IncFunction extends CheckedIntegerAction
434	>	static class IncFunction extends CheckedIntegerAction
435		implements Function<Integer,Integer>
436		{
437		IncFunction(ExecutionMode m) { super(m); }
#	Line 441 | Line 449 | public class CompletableFutureTest exten
449		- ((y == null) ? 99 : y.intValue());
450		}
451
452	<	class SubtractAction extends CheckedIntegerAction
452	>	static class SubtractAction extends CheckedIntegerAction
453		implements BiConsumer<Integer, Integer>
454		{
455		SubtractAction(ExecutionMode m) { super(m); }
#	Line 451 | Line 459 | public class CompletableFutureTest exten
459		}
460		}
461
462	<	class SubtractFunction extends CheckedIntegerAction
462	>	static class SubtractFunction extends CheckedIntegerAction
463		implements BiFunction<Integer, Integer, Integer>
464		{
465		SubtractFunction(ExecutionMode m) { super(m); }
#	Line 461 | Line 469 | public class CompletableFutureTest exten
469		}
470		}
471
472	<	class Noop extends CheckedAction implements Runnable {
472	>	static class Noop extends CheckedAction implements Runnable {
473		Noop(ExecutionMode m) { super(m); }
474		public void run() {
475		invoked();
476		}
477		}
478
479	<	class FailingSupplier extends CheckedAction
479	>	static class FailingSupplier extends CheckedAction
480		implements Supplier<Integer>
481		{
482	<	FailingSupplier(ExecutionMode m) { super(m); }
482	>	final CFException ex;
483	>	FailingSupplier(ExecutionMode m) { super(m); ex = new CFException(); }
484		public Integer get() {
485		invoked();
486	<	throw new CFException();
486	>	throw ex;
487		}
488		}
489
490	<	class FailingConsumer extends CheckedIntegerAction
490	>	static class FailingConsumer extends CheckedIntegerAction
491		implements Consumer<Integer>
492		{
493	<	FailingConsumer(ExecutionMode m) { super(m); }
493	>	final CFException ex;
494	>	FailingConsumer(ExecutionMode m) { super(m); ex = new CFException(); }
495		public void accept(Integer x) {
496		invoked();
497		value = x;
498	<	throw new CFException();
498	>	throw ex;
499		}
500		}
501
502	<	class FailingBiConsumer extends CheckedIntegerAction
502	>	static class FailingBiConsumer extends CheckedIntegerAction
503		implements BiConsumer<Integer, Integer>
504		{
505	<	FailingBiConsumer(ExecutionMode m) { super(m); }
505	>	final CFException ex;
506	>	FailingBiConsumer(ExecutionMode m) { super(m); ex = new CFException(); }
507		public void accept(Integer x, Integer y) {
508		invoked();
509		value = subtract(x, y);
510	<	throw new CFException();
510	>	throw ex;
511		}
512		}
513
514	<	class FailingFunction extends CheckedIntegerAction
514	>	static class FailingFunction extends CheckedIntegerAction
515		implements Function<Integer, Integer>
516		{
517	<	FailingFunction(ExecutionMode m) { super(m); }
517	>	final CFException ex;
518	>	FailingFunction(ExecutionMode m) { super(m); ex = new CFException(); }
519		public Integer apply(Integer x) {
520		invoked();
521		value = x;
522	<	throw new CFException();
522	>	throw ex;
523		}
524		}
525
526	<	class FailingBiFunction extends CheckedIntegerAction
526	>	static class FailingBiFunction extends CheckedIntegerAction
527		implements BiFunction<Integer, Integer, Integer>
528		{
529	<	FailingBiFunction(ExecutionMode m) { super(m); }
529	>	final CFException ex;
530	>	FailingBiFunction(ExecutionMode m) { super(m); ex = new CFException(); }
531		public Integer apply(Integer x, Integer y) {
532		invoked();
533		value = subtract(x, y);
534	<	throw new CFException();
534	>	throw ex;
535		}
536		}
537
538	<	class FailingRunnable extends CheckedAction implements Runnable {
539	<	FailingRunnable(ExecutionMode m) { super(m); }
538	>	static class FailingRunnable extends CheckedAction implements Runnable {
539	>	final CFException ex;
540	>	FailingRunnable(ExecutionMode m) { super(m); ex = new CFException(); }
541		public void run() {
542		invoked();
543	<	throw new CFException();
543	>	throw ex;
544		}
545		}
546
547	<
534	<	class CompletableFutureInc extends CheckedIntegerAction
547	>	static class CompletableFutureInc extends CheckedIntegerAction
548		implements Function<Integer, CompletableFuture<Integer>>
549		{
550		CompletableFutureInc(ExecutionMode m) { super(m); }
551		public CompletableFuture<Integer> apply(Integer x) {
552		invoked();
553		value = x;
554	<	CompletableFuture<Integer> f = new CompletableFuture<>();
555	<	assertTrue(f.complete(inc(x)));
556	<	return f;
554	>	return CompletableFuture.completedFuture(inc(x));
555	>	}
556	>	}
557	>
558	>	static class FailingExceptionalCompletableFutureFunction extends CheckedAction
559	>	implements Function<Throwable, CompletableFuture<Integer>>
560	>	{
561	>	final CFException ex;
562	>	FailingExceptionalCompletableFutureFunction(ExecutionMode m) { super(m); ex = new CFException(); }
563	>	public CompletableFuture<Integer> apply(Throwable x) {
564	>	invoked();
565	>	throw ex;
566		}
567		}
568
569	<	class FailingCompletableFutureFunction extends CheckedIntegerAction
569	>	static class ExceptionalCompletableFutureFunction extends CheckedAction
570	>	implements Function<Throwable, CompletionStage<Integer>> {
571	>	final Integer value = 3;
572	>	ExceptionalCompletableFutureFunction(ExecutionMode m) { super(m); }
573	>	public CompletionStage<Integer> apply(Throwable x) {
574	>	invoked();
575	>	return CompletableFuture.completedFuture(value);
576	>	}
577	>	}
578	>
579	>	static class FailingCompletableFutureFunction extends CheckedIntegerAction
580		implements Function<Integer, CompletableFuture<Integer>>
581		{
582	<	FailingCompletableFutureFunction(ExecutionMode m) { super(m); }
582	>	final CFException ex;
583	>	FailingCompletableFutureFunction(ExecutionMode m) { super(m); ex = new CFException(); }
584		public CompletableFuture<Integer> apply(Integer x) {
585		invoked();
586		value = x;
587	<	throw new CFException();
587	>	throw ex;
588	>	}
589	>	}
590	>
591	>	static class CountingRejectingExecutor implements Executor {
592	>	final RejectedExecutionException ex = new RejectedExecutionException();
593	>	final AtomicInteger count = new AtomicInteger(0);
594	>	public void execute(Runnable r) {
595	>	count.getAndIncrement();
596	>	throw ex;
597		}
598		}
599
#	Line 569 | Line 611 | public class CompletableFutureTest exten
611		}
612		}
613
614	+	static final boolean defaultExecutorIsCommonPool
615	+	= ForkJoinPool.getCommonPoolParallelism() > 1;
616	+
617		/**
618		* Permits the testing of parallel code for the 3 different
619		* execution modes without copy/pasting all the test methods.
620		*/
621		enum ExecutionMode {
622	<	DEFAULT {
622	>	SYNC {
623		public void checkExecutionMode() {
624		assertFalse(ThreadExecutor.startedCurrentThread());
625		assertNull(ForkJoinTask.getPool());
#	Line 646 | Line 691 | public class CompletableFutureTest exten
691		Function<? super T,U> a) {
692		return f.applyToEither(g, a);
693		}
694	+	public <T> CompletableFuture<T> exceptionally
695	+	(CompletableFuture<T> f,
696	+	Function<Throwable, ? extends T> fn) {
697	+	return f.exceptionally(fn);
698	+	}
699	+	public <T> CompletableFuture<T> exceptionallyCompose
700	+	(CompletableFuture<T> f, Function<Throwable, ? extends CompletionStage<T>> fn) {
701	+	return f.exceptionallyCompose(fn);
702	+	}
703		},
650	–
704		ASYNC {
705		public void checkExecutionMode() {
706	<	assertSame(ForkJoinPool.commonPool(),
707	<	ForkJoinTask.getPool());
706	>	assertEquals(defaultExecutorIsCommonPool,
707	>	(ForkJoinPool.commonPool() == ForkJoinTask.getPool()));
708		}
709		public CompletableFuture<Void> runAsync(Runnable a) {
710		return CompletableFuture.runAsync(a);
#	Line 720 | Line 773 | public class CompletableFutureTest exten
773		Function<? super T,U> a) {
774		return f.applyToEitherAsync(g, a);
775		}
776	+	public <T> CompletableFuture<T> exceptionally
777	+	(CompletableFuture<T> f,
778	+	Function<Throwable, ? extends T> fn) {
779	+	return f.exceptionallyAsync(fn);
780	+	}
781	+
782	+	public <T> CompletableFuture<T> exceptionallyCompose
783	+	(CompletableFuture<T> f, Function<Throwable, ? extends CompletionStage<T>> fn) {
784	+	return f.exceptionallyComposeAsync(fn);
785	+	}
786	+
787		},
788
789		EXECUTOR {
#	Line 793 | Line 857 | public class CompletableFutureTest exten
857		Function<? super T,U> a) {
858		return f.applyToEitherAsync(g, a, new ThreadExecutor());
859		}
860	+	public <T> CompletableFuture<T> exceptionally
861	+	(CompletableFuture<T> f,
862	+	Function<Throwable, ? extends T> fn) {
863	+	return f.exceptionallyAsync(fn, new ThreadExecutor());
864	+	}
865	+	public <T> CompletableFuture<T> exceptionallyCompose
866	+	(CompletableFuture<T> f, Function<Throwable, ? extends CompletionStage<T>> fn) {
867	+	return f.exceptionallyComposeAsync(fn, new ThreadExecutor());
868	+	}
869	+
870		};
871
872		public abstract void checkExecutionMode();
#	Line 835 | Line 909 | public class CompletableFutureTest exten
909		(CompletableFuture<T> f,
910		CompletionStage<? extends T> g,
911		Function<? super T,U> a);
912	+	public abstract <T> CompletableFuture<T> exceptionally
913	+	(CompletableFuture<T> f,
914	+	Function<Throwable, ? extends T> fn);
915	+	public abstract <T> CompletableFuture<T> exceptionallyCompose
916	+	(CompletableFuture<T> f,
917	+	Function<Throwable, ? extends CompletionStage<T>> fn);
918		}
919
920		/**
#	Line 842 | Line 922 | public class CompletableFutureTest exten
922		* normally, and source result is propagated
923		*/
924		public void testExceptionally_normalCompletion() {
925	+	for (ExecutionMode m : ExecutionMode.values())
926		for (boolean createIncomplete : new boolean[] { true, false })
927		for (Integer v1 : new Integer[] { 1, null })
928		{
929	<	final AtomicInteger a = new AtomicInteger(0);
929	>	final AtomicInteger ran = new AtomicInteger(0);
930		final CompletableFuture<Integer> f = new CompletableFuture<>();
931		if (!createIncomplete) assertTrue(f.complete(v1));
932	<	final CompletableFuture<Integer> g = f.exceptionally
933	<	((Throwable t) -> {
934	<	// Should not be called
935	<	a.getAndIncrement();
855	<	throw new AssertionError();
932	>	final CompletableFuture<Integer> g = m.exceptionally
933	>	(f, (Throwable t) -> {
934	>	ran.getAndIncrement();
935	>	throw new AssertionError("should not be called");
936		});
937		if (createIncomplete) assertTrue(f.complete(v1));
938
939		checkCompletedNormally(g, v1);
940		checkCompletedNormally(f, v1);
941	<	assertEquals(0, a.get());
941	>	assertEquals(0, ran.get());
942		}}
943
944		/**
#	Line 866 | Line 946 | public class CompletableFutureTest exten
946		* exception
947		*/
948		public void testExceptionally_exceptionalCompletion() {
949	+	for (ExecutionMode m : ExecutionMode.values())
950		for (boolean createIncomplete : new boolean[] { true, false })
951		for (Integer v1 : new Integer[] { 1, null })
952		{
953	<	final AtomicInteger a = new AtomicInteger(0);
953	>	final AtomicInteger ran = new AtomicInteger(0);
954		final CFException ex = new CFException();
955		final CompletableFuture<Integer> f = new CompletableFuture<>();
956		if (!createIncomplete) f.completeExceptionally(ex);
957	<	final CompletableFuture<Integer> g = f.exceptionally
958	<	((Throwable t) -> {
959	<	ExecutionMode.DEFAULT.checkExecutionMode();
960	<	threadAssertSame(t, ex);
961	<	a.getAndIncrement();
957	>	final CompletableFuture<Integer> g = m.exceptionally
958	>	(f, (Throwable t) -> {
959	>	m.checkExecutionMode();
960	>	assertSame(t, ex);
961	>	ran.getAndIncrement();
962		return v1;
963		});
964		if (createIncomplete) f.completeExceptionally(ex);
965
966		checkCompletedNormally(g, v1);
967	<	assertEquals(1, a.get());
967	>	assertEquals(1, ran.get());
968		}}
969
970	+	/**
971	+	* If an "exceptionally action" throws an exception, it completes
972	+	* exceptionally with that exception
973	+	*/
974		public void testExceptionally_exceptionalCompletionActionFailed() {
975	+	for (ExecutionMode m : ExecutionMode.values())
976		for (boolean createIncomplete : new boolean[] { true, false })
891	–	for (Integer v1 : new Integer[] { 1, null })
977		{
978	<	final AtomicInteger a = new AtomicInteger(0);
978	>	final AtomicInteger ran = new AtomicInteger(0);
979		final CFException ex1 = new CFException();
980		final CFException ex2 = new CFException();
981		final CompletableFuture<Integer> f = new CompletableFuture<>();
982		if (!createIncomplete) f.completeExceptionally(ex1);
983	<	final CompletableFuture<Integer> g = f.exceptionally
984	<	((Throwable t) -> {
985	<	ExecutionMode.DEFAULT.checkExecutionMode();
986	<	threadAssertSame(t, ex1);
987	<	a.getAndIncrement();
983	>	final CompletableFuture<Integer> g = m.exceptionally
984	>	(f, (Throwable t) -> {
985	>	m.checkExecutionMode();
986	>	assertSame(t, ex1);
987	>	ran.getAndIncrement();
988		throw ex2;
989		});
990		if (createIncomplete) f.completeExceptionally(ex1);
991
992		checkCompletedWithWrappedException(g, ex2);
993	<	assertEquals(1, a.get());
993	>	checkCompletedExceptionally(f, ex1);
994	>	assertEquals(1, ran.get());
995		}}
996
997		/**
998		* whenComplete action executes on normal completion, propagating
999		* source result.
1000		*/
1001	<	public void testWhenComplete_normalCompletion1() {
1001	>	public void testWhenComplete_normalCompletion() {
1002		for (ExecutionMode m : ExecutionMode.values())
1003		for (boolean createIncomplete : new boolean[] { true, false })
1004		for (Integer v1 : new Integer[] { 1, null })
1005		{
1006	<	final AtomicInteger a = new AtomicInteger(0);
1006	>	final AtomicInteger ran = new AtomicInteger(0);
1007		final CompletableFuture<Integer> f = new CompletableFuture<>();
1008		if (!createIncomplete) assertTrue(f.complete(v1));
1009		final CompletableFuture<Integer> g = m.whenComplete
1010		(f,
1011	<	(Integer x, Throwable t) -> {
1011	>	(Integer result, Throwable t) -> {
1012		m.checkExecutionMode();
1013	<	threadAssertSame(x, v1);
1014	<	threadAssertNull(t);
1015	<	a.getAndIncrement();
1013	>	assertSame(result, v1);
1014	>	assertNull(t);
1015	>	ran.getAndIncrement();
1016		});
1017		if (createIncomplete) assertTrue(f.complete(v1));
1018
1019		checkCompletedNormally(g, v1);
1020		checkCompletedNormally(f, v1);
1021	<	assertEquals(1, a.get());
1021	>	assertEquals(1, ran.get());
1022		}}
1023
1024		/**
#	Line 942 | Line 1028 | public class CompletableFutureTest exten
1028		public void testWhenComplete_exceptionalCompletion() {
1029		for (ExecutionMode m : ExecutionMode.values())
1030		for (boolean createIncomplete : new boolean[] { true, false })
945	–	for (Integer v1 : new Integer[] { 1, null })
1031		{
1032	<	final AtomicInteger a = new AtomicInteger(0);
1032	>	final AtomicInteger ran = new AtomicInteger(0);
1033		final CFException ex = new CFException();
1034		final CompletableFuture<Integer> f = new CompletableFuture<>();
1035		if (!createIncomplete) f.completeExceptionally(ex);
1036		final CompletableFuture<Integer> g = m.whenComplete
1037		(f,
1038	<	(Integer x, Throwable t) -> {
1038	>	(Integer result, Throwable t) -> {
1039		m.checkExecutionMode();
1040	<	threadAssertNull(x);
1041	<	threadAssertSame(t, ex);
1042	<	a.getAndIncrement();
1040	>	assertNull(result);
1041	>	assertSame(t, ex);
1042	>	ran.getAndIncrement();
1043		});
1044		if (createIncomplete) f.completeExceptionally(ex);
1045
1046		checkCompletedWithWrappedException(g, ex);
1047		checkCompletedExceptionally(f, ex);
1048	<	assertEquals(1, a.get());
1048	>	assertEquals(1, ran.get());
1049		}}
1050
1051		/**
#	Line 972 | Line 1057 | public class CompletableFutureTest exten
1057		for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1058		for (boolean createIncomplete : new boolean[] { true, false })
1059		{
1060	<	final AtomicInteger a = new AtomicInteger(0);
1060	>	final AtomicInteger ran = new AtomicInteger(0);
1061		final CompletableFuture<Integer> f = new CompletableFuture<>();
1062		if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
1063		final CompletableFuture<Integer> g = m.whenComplete
1064		(f,
1065	<	(Integer x, Throwable t) -> {
1065	>	(Integer result, Throwable t) -> {
1066		m.checkExecutionMode();
1067	<	threadAssertNull(x);
1068	<	threadAssertTrue(t instanceof CancellationException);
1069	<	a.getAndIncrement();
1067	>	assertNull(result);
1068	>	assertTrue(t instanceof CancellationException);
1069	>	ran.getAndIncrement();
1070		});
1071		if (createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
1072
1073		checkCompletedWithWrappedCancellationException(g);
1074		checkCancelled(f);
1075	<	assertEquals(1, a.get());
1075	>	assertEquals(1, ran.get());
1076		}}
1077
1078		/**
1079		* If a whenComplete action throws an exception when triggered by
1080		* a normal completion, it completes exceptionally
1081		*/
1082	<	public void testWhenComplete_actionFailed() {
1082	>	public void testWhenComplete_sourceCompletedNormallyActionFailed() {
1083		for (boolean createIncomplete : new boolean[] { true, false })
1084		for (ExecutionMode m : ExecutionMode.values())
1085		for (Integer v1 : new Integer[] { 1, null })
1086		{
1087	<	final AtomicInteger a = new AtomicInteger(0);
1087	>	final AtomicInteger ran = new AtomicInteger(0);
1088		final CFException ex = new CFException();
1089		final CompletableFuture<Integer> f = new CompletableFuture<>();
1090		if (!createIncomplete) assertTrue(f.complete(v1));
1091		final CompletableFuture<Integer> g = m.whenComplete
1092		(f,
1093	<	(Integer x, Throwable t) -> {
1093	>	(Integer result, Throwable t) -> {
1094		m.checkExecutionMode();
1095	<	threadAssertSame(x, v1);
1096	<	threadAssertNull(t);
1097	<	a.getAndIncrement();
1095	>	assertSame(result, v1);
1096	>	assertNull(t);
1097	>	ran.getAndIncrement();
1098		throw ex;
1099		});
1100		if (createIncomplete) assertTrue(f.complete(v1));
1101
1102		checkCompletedWithWrappedException(g, ex);
1103		checkCompletedNormally(f, v1);
1104	<	assertEquals(1, a.get());
1104	>	assertEquals(1, ran.get());
1105		}}
1106
1107		/**
1108		* If a whenComplete action throws an exception when triggered by
1109		* a source completion that also throws an exception, the source
1110	<	* exception takes precedence.
1110	>	* exception takes precedence (unlike handle)
1111		*/
1112	<	public void testWhenComplete_actionFailedSourceFailed() {
1112	>	public void testWhenComplete_sourceFailedActionFailed() {
1113		for (boolean createIncomplete : new boolean[] { true, false })
1114		for (ExecutionMode m : ExecutionMode.values())
1030	–	for (Integer v1 : new Integer[] { 1, null })
1115		{
1116	<	final AtomicInteger a = new AtomicInteger(0);
1116	>	final AtomicInteger ran = new AtomicInteger(0);
1117		final CFException ex1 = new CFException();
1118		final CFException ex2 = new CFException();
1119		final CompletableFuture<Integer> f = new CompletableFuture<>();
#	Line 1037 | Line 1121 | public class CompletableFutureTest exten
1121		if (!createIncomplete) f.completeExceptionally(ex1);
1122		final CompletableFuture<Integer> g = m.whenComplete
1123		(f,
1124	<	(Integer x, Throwable t) -> {
1124	>	(Integer result, Throwable t) -> {
1125		m.checkExecutionMode();
1126	<	threadAssertSame(t, ex1);
1127	<	threadAssertNull(x);
1128	<	a.getAndIncrement();
1126	>	assertSame(t, ex1);
1127	>	assertNull(result);
1128	>	ran.getAndIncrement();
1129		throw ex2;
1130		});
1131		if (createIncomplete) f.completeExceptionally(ex1);
1132
1133		checkCompletedWithWrappedException(g, ex1);
1134		checkCompletedExceptionally(f, ex1);
1135	<	assertEquals(1, a.get());
1135	>	if (testImplementationDetails) {
1136	>	assertEquals(1, ex1.getSuppressed().length);
1137	>	assertSame(ex2, ex1.getSuppressed()[0]);
1138	>	}
1139	>	assertEquals(1, ran.get());
1140		}}
1141
1142		/**
#	Line 1061 | Line 1149 | public class CompletableFutureTest exten
1149		for (Integer v1 : new Integer[] { 1, null })
1150		{
1151		final CompletableFuture<Integer> f = new CompletableFuture<>();
1152	<	final AtomicInteger a = new AtomicInteger(0);
1152	>	final AtomicInteger ran = new AtomicInteger(0);
1153		if (!createIncomplete) assertTrue(f.complete(v1));
1154		final CompletableFuture<Integer> g = m.handle
1155		(f,
1156	<	(Integer x, Throwable t) -> {
1156	>	(Integer result, Throwable t) -> {
1157		m.checkExecutionMode();
1158	<	threadAssertSame(x, v1);
1159	<	threadAssertNull(t);
1160	<	a.getAndIncrement();
1158	>	assertSame(result, v1);
1159	>	assertNull(t);
1160	>	ran.getAndIncrement();
1161		return inc(v1);
1162		});
1163		if (createIncomplete) assertTrue(f.complete(v1));
1164
1165		checkCompletedNormally(g, inc(v1));
1166		checkCompletedNormally(f, v1);
1167	<	assertEquals(1, a.get());
1167	>	assertEquals(1, ran.get());
1168		}}
1169
1170		/**
#	Line 1089 | Line 1177 | public class CompletableFutureTest exten
1177		for (Integer v1 : new Integer[] { 1, null })
1178		{
1179		final CompletableFuture<Integer> f = new CompletableFuture<>();
1180	<	final AtomicInteger a = new AtomicInteger(0);
1180	>	final AtomicInteger ran = new AtomicInteger(0);
1181		final CFException ex = new CFException();
1182		if (!createIncomplete) f.completeExceptionally(ex);
1183		final CompletableFuture<Integer> g = m.handle
1184		(f,
1185	<	(Integer x, Throwable t) -> {
1185	>	(Integer result, Throwable t) -> {
1186		m.checkExecutionMode();
1187	<	threadAssertNull(x);
1188	<	threadAssertSame(t, ex);
1189	<	a.getAndIncrement();
1187	>	assertNull(result);
1188	>	assertSame(t, ex);
1189	>	ran.getAndIncrement();
1190		return v1;
1191		});
1192		if (createIncomplete) f.completeExceptionally(ex);
1193
1194		checkCompletedNormally(g, v1);
1195		checkCompletedExceptionally(f, ex);
1196	<	assertEquals(1, a.get());
1196	>	assertEquals(1, ran.get());
1197		}}
1198
1199		/**
#	Line 1119 | Line 1207 | public class CompletableFutureTest exten
1207		for (Integer v1 : new Integer[] { 1, null })
1208		{
1209		final CompletableFuture<Integer> f = new CompletableFuture<>();
1210	<	final AtomicInteger a = new AtomicInteger(0);
1210	>	final AtomicInteger ran = new AtomicInteger(0);
1211		if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
1212		final CompletableFuture<Integer> g = m.handle
1213		(f,
1214	<	(Integer x, Throwable t) -> {
1214	>	(Integer result, Throwable t) -> {
1215		m.checkExecutionMode();
1216	<	threadAssertNull(x);
1217	<	threadAssertTrue(t instanceof CancellationException);
1218	<	a.getAndIncrement();
1216	>	assertNull(result);
1217	>	assertTrue(t instanceof CancellationException);
1218	>	ran.getAndIncrement();
1219		return v1;
1220		});
1221		if (createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
1222
1223		checkCompletedNormally(g, v1);
1224		checkCancelled(f);
1225	<	assertEquals(1, a.get());
1225	>	assertEquals(1, ran.get());
1226		}}
1227
1228		/**
1229	<	* handle result completes exceptionally if action does
1229	>	* If a "handle action" throws an exception when triggered by
1230	>	* a normal completion, it completes exceptionally
1231		*/
1232	<	public void testHandle_sourceFailedActionFailed() {
1232	>	public void testHandle_sourceCompletedNormallyActionFailed() {
1233		for (ExecutionMode m : ExecutionMode.values())
1234		for (boolean createIncomplete : new boolean[] { true, false })
1235	+	for (Integer v1 : new Integer[] { 1, null })
1236		{
1237		final CompletableFuture<Integer> f = new CompletableFuture<>();
1238	<	final AtomicInteger a = new AtomicInteger(0);
1239	<	final CFException ex1 = new CFException();
1240	<	final CFException ex2 = new CFException();
1151	<	if (!createIncomplete) f.completeExceptionally(ex1);
1238	>	final AtomicInteger ran = new AtomicInteger(0);
1239	>	final CFException ex = new CFException();
1240	>	if (!createIncomplete) assertTrue(f.complete(v1));
1241		final CompletableFuture<Integer> g = m.handle
1242		(f,
1243	<	(Integer x, Throwable t) -> {
1243	>	(Integer result, Throwable t) -> {
1244		m.checkExecutionMode();
1245	<	threadAssertNull(x);
1246	<	threadAssertSame(ex1, t);
1247	<	a.getAndIncrement();
1248	<	throw ex2;
1245	>	assertSame(result, v1);
1246	>	assertNull(t);
1247	>	ran.getAndIncrement();
1248	>	throw ex;
1249		});
1250	<	if (createIncomplete) f.completeExceptionally(ex1);
1250	>	if (createIncomplete) assertTrue(f.complete(v1));
1251
1252	<	checkCompletedWithWrappedException(g, ex2);
1253	<	checkCompletedExceptionally(f, ex1);
1254	<	assertEquals(1, a.get());
1252	>	checkCompletedWithWrappedException(g, ex);
1253	>	checkCompletedNormally(f, v1);
1254	>	assertEquals(1, ran.get());
1255		}}
1256
1257	<	public void testHandle_sourceCompletedNormallyActionFailed() {
1258	<	for (ExecutionMode m : ExecutionMode.values())
1257	>	/**
1258	>	* If a "handle action" throws an exception when triggered by
1259	>	* a source completion that also throws an exception, the action
1260	>	* exception takes precedence (unlike whenComplete)
1261	>	*/
1262	>	public void testHandle_sourceFailedActionFailed() {
1263		for (boolean createIncomplete : new boolean[] { true, false })
1264	<	for (Integer v1 : new Integer[] { 1, null })
1264	>	for (ExecutionMode m : ExecutionMode.values())
1265		{
1266	+	final AtomicInteger ran = new AtomicInteger(0);
1267	+	final CFException ex1 = new CFException();
1268	+	final CFException ex2 = new CFException();
1269		final CompletableFuture<Integer> f = new CompletableFuture<>();
1270	<	final AtomicInteger a = new AtomicInteger(0);
1271	<	final CFException ex = new CFException();
1176	<	if (!createIncomplete) assertTrue(f.complete(v1));
1270	>
1271	>	if (!createIncomplete) f.completeExceptionally(ex1);
1272		final CompletableFuture<Integer> g = m.handle
1273		(f,
1274	<	(Integer x, Throwable t) -> {
1274	>	(Integer result, Throwable t) -> {
1275		m.checkExecutionMode();
1276	<	threadAssertSame(x, v1);
1277	<	threadAssertNull(t);
1278	<	a.getAndIncrement();
1279	<	throw ex;
1276	>	assertNull(result);
1277	>	assertSame(ex1, t);
1278	>	ran.getAndIncrement();
1279	>	throw ex2;
1280		});
1281	<	if (createIncomplete) assertTrue(f.complete(v1));
1281	>	if (createIncomplete) f.completeExceptionally(ex1);
1282
1283	<	checkCompletedWithWrappedException(g, ex);
1284	<	checkCompletedNormally(f, v1);
1285	<	assertEquals(1, a.get());
1283	>	checkCompletedWithWrappedException(g, ex2);
1284	>	checkCompletedExceptionally(f, ex1);
1285	>	assertEquals(1, ran.get());
1286		}}
1287
1288		/**
#	Line 1219 | Line 1314 | public class CompletableFutureTest exten
1314		{
1315		final FailingRunnable r = new FailingRunnable(m);
1316		final CompletableFuture<Void> f = m.runAsync(r);
1317	<	checkCompletedWithWrappedCFException(f);
1317	>	checkCompletedWithWrappedException(f, r.ex);
1318		r.assertInvoked();
1319		}}
1320
1321	+	@SuppressWarnings("FutureReturnValueIgnored")
1322	+	public void testRunAsync_rejectingExecutor() {
1323	+	CountingRejectingExecutor e = new CountingRejectingExecutor();
1324	+	try {
1325	+	CompletableFuture.runAsync(() -> {}, e);
1326	+	shouldThrow();
1327	+	} catch (Throwable t) {
1328	+	assertSame(e.ex, t);
1329	+	}
1330	+
1331	+	assertEquals(1, e.count.get());
1332	+	}
1333	+
1334		/**
1335		* supplyAsync completes with result of supplier
1336		*/
#	Line 1253 | Line 1361 | public class CompletableFutureTest exten
1361		{
1362		FailingSupplier r = new FailingSupplier(m);
1363		CompletableFuture<Integer> f = m.supplyAsync(r);
1364	<	checkCompletedWithWrappedCFException(f);
1364	>	checkCompletedWithWrappedException(f, r.ex);
1365		r.assertInvoked();
1366		}}
1367
1368	+	@SuppressWarnings("FutureReturnValueIgnored")
1369	+	public void testSupplyAsync_rejectingExecutor() {
1370	+	CountingRejectingExecutor e = new CountingRejectingExecutor();
1371	+	try {
1372	+	CompletableFuture.supplyAsync(() -> null, e);
1373	+	shouldThrow();
1374	+	} catch (Throwable t) {
1375	+	assertSame(e.ex, t);
1376	+	}
1377	+
1378	+	assertEquals(1, e.count.get());
1379	+	}
1380	+
1381		// seq completion methods
1382
1383		/**
#	Line 1264 | Line 1385 | public class CompletableFutureTest exten
1385		*/
1386		public void testThenRun_normalCompletion() {
1387		for (ExecutionMode m : ExecutionMode.values())
1267	–	for (boolean createIncomplete : new boolean[] { true, false })
1388		for (Integer v1 : new Integer[] { 1, null })
1389		{
1390		final CompletableFuture<Integer> f = new CompletableFuture<>();
1391	<	final Noop r = new Noop(m);
1392	<	if (!createIncomplete) assertTrue(f.complete(v1));
1273	<	final CompletableFuture<Void> g = m.thenRun(f, r);
1274	<	if (createIncomplete) {
1275	<	checkIncomplete(g);
1276	<	assertTrue(f.complete(v1));
1277	<	}
1391	>	final Noop[] rs = new Noop[6];
1392	>	for (int i = 0; i < rs.length; i++) rs[i] = new Noop(m);
1393
1394	<	checkCompletedNormally(g, null);
1394	>	final CompletableFuture<Void> h0 = m.thenRun(f, rs[0]);
1395	>	final CompletableFuture<Void> h1 = m.runAfterBoth(f, f, rs[1]);
1396	>	final CompletableFuture<Void> h2 = m.runAfterEither(f, f, rs[2]);
1397	>	checkIncomplete(h0);
1398	>	checkIncomplete(h1);
1399	>	checkIncomplete(h2);
1400	>	assertTrue(f.complete(v1));
1401	>	final CompletableFuture<Void> h3 = m.thenRun(f, rs[3]);
1402	>	final CompletableFuture<Void> h4 = m.runAfterBoth(f, f, rs[4]);
1403	>	final CompletableFuture<Void> h5 = m.runAfterEither(f, f, rs[5]);
1404	>
1405	>	checkCompletedNormally(h0, null);
1406	>	checkCompletedNormally(h1, null);
1407	>	checkCompletedNormally(h2, null);
1408	>	checkCompletedNormally(h3, null);
1409	>	checkCompletedNormally(h4, null);
1410	>	checkCompletedNormally(h5, null);
1411		checkCompletedNormally(f, v1);
1412	<	r.assertInvoked();
1412	>	for (Noop r : rs) r.assertInvoked();
1413		}}
1414
1415		/**
#	Line 1287 | Line 1418 | public class CompletableFutureTest exten
1418		*/
1419		public void testThenRun_exceptionalCompletion() {
1420		for (ExecutionMode m : ExecutionMode.values())
1290	–	for (boolean createIncomplete : new boolean[] { true, false })
1421		{
1422		final CFException ex = new CFException();
1423		final CompletableFuture<Integer> f = new CompletableFuture<>();
1424	<	final Noop r = new Noop(m);
1425	<	if (!createIncomplete) f.completeExceptionally(ex);
1296	<	final CompletableFuture<Void> g = m.thenRun(f, r);
1297	<	if (createIncomplete) {
1298	<	checkIncomplete(g);
1299	<	f.completeExceptionally(ex);
1300	<	}
1424	>	final Noop[] rs = new Noop[6];
1425	>	for (int i = 0; i < rs.length; i++) rs[i] = new Noop(m);
1426
1427	<	checkCompletedWithWrappedException(g, ex);
1427	>	final CompletableFuture<Void> h0 = m.thenRun(f, rs[0]);
1428	>	final CompletableFuture<Void> h1 = m.runAfterBoth(f, f, rs[1]);
1429	>	final CompletableFuture<Void> h2 = m.runAfterEither(f, f, rs[2]);
1430	>	checkIncomplete(h0);
1431	>	checkIncomplete(h1);
1432	>	checkIncomplete(h2);
1433	>	assertTrue(f.completeExceptionally(ex));
1434	>	final CompletableFuture<Void> h3 = m.thenRun(f, rs[3]);
1435	>	final CompletableFuture<Void> h4 = m.runAfterBoth(f, f, rs[4]);
1436	>	final CompletableFuture<Void> h5 = m.runAfterEither(f, f, rs[5]);
1437	>
1438	>	checkCompletedWithWrappedException(h0, ex);
1439	>	checkCompletedWithWrappedException(h1, ex);
1440	>	checkCompletedWithWrappedException(h2, ex);
1441	>	checkCompletedWithWrappedException(h3, ex);
1442	>	checkCompletedWithWrappedException(h4, ex);
1443	>	checkCompletedWithWrappedException(h5, ex);
1444		checkCompletedExceptionally(f, ex);
1445	<	r.assertNotInvoked();
1445	>	for (Noop r : rs) r.assertNotInvoked();
1446		}}
1447
1448		/**
#	Line 1309 | Line 1450 | public class CompletableFutureTest exten
1450		*/
1451		public void testThenRun_sourceCancelled() {
1452		for (ExecutionMode m : ExecutionMode.values())
1312	–	for (boolean createIncomplete : new boolean[] { true, false })
1453		for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1454		{
1455		final CompletableFuture<Integer> f = new CompletableFuture<>();
1456	<	final Noop r = new Noop(m);
1457	<	if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
1318	<	final CompletableFuture<Void> g = m.thenRun(f, r);
1319	<	if (createIncomplete) {
1320	<	checkIncomplete(g);
1321	<	assertTrue(f.cancel(mayInterruptIfRunning));
1322	<	}
1456	>	final Noop[] rs = new Noop[6];
1457	>	for (int i = 0; i < rs.length; i++) rs[i] = new Noop(m);
1458
1459	<	checkCompletedWithWrappedCancellationException(g);
1459	>	final CompletableFuture<Void> h0 = m.thenRun(f, rs[0]);
1460	>	final CompletableFuture<Void> h1 = m.runAfterBoth(f, f, rs[1]);
1461	>	final CompletableFuture<Void> h2 = m.runAfterEither(f, f, rs[2]);
1462	>	checkIncomplete(h0);
1463	>	checkIncomplete(h1);
1464	>	checkIncomplete(h2);
1465	>	assertTrue(f.cancel(mayInterruptIfRunning));
1466	>	final CompletableFuture<Void> h3 = m.thenRun(f, rs[3]);
1467	>	final CompletableFuture<Void> h4 = m.runAfterBoth(f, f, rs[4]);
1468	>	final CompletableFuture<Void> h5 = m.runAfterEither(f, f, rs[5]);
1469	>
1470	>	checkCompletedWithWrappedCancellationException(h0);
1471	>	checkCompletedWithWrappedCancellationException(h1);
1472	>	checkCompletedWithWrappedCancellationException(h2);
1473	>	checkCompletedWithWrappedCancellationException(h3);
1474	>	checkCompletedWithWrappedCancellationException(h4);
1475	>	checkCompletedWithWrappedCancellationException(h5);
1476		checkCancelled(f);
1477	<	r.assertNotInvoked();
1477	>	for (Noop r : rs) r.assertNotInvoked();
1478		}}
1479
1480		/**
#	Line 1331 | Line 1482 | public class CompletableFutureTest exten
1482		*/
1483		public void testThenRun_actionFailed() {
1484		for (ExecutionMode m : ExecutionMode.values())
1334	–	for (boolean createIncomplete : new boolean[] { true, false })
1485		for (Integer v1 : new Integer[] { 1, null })
1486		{
1487		final CompletableFuture<Integer> f = new CompletableFuture<>();
1488	<	final FailingRunnable r = new FailingRunnable(m);
1489	<	if (!createIncomplete) assertTrue(f.complete(v1));
1340	<	final CompletableFuture<Void> g = m.thenRun(f, r);
1341	<	if (createIncomplete) {
1342	<	checkIncomplete(g);
1343	<	assertTrue(f.complete(v1));
1344	<	}
1488	>	final FailingRunnable[] rs = new FailingRunnable[6];
1489	>	for (int i = 0; i < rs.length; i++) rs[i] = new FailingRunnable(m);
1490
1491	<	checkCompletedWithWrappedCFException(g);
1491	>	final CompletableFuture<Void> h0 = m.thenRun(f, rs[0]);
1492	>	final CompletableFuture<Void> h1 = m.runAfterBoth(f, f, rs[1]);
1493	>	final CompletableFuture<Void> h2 = m.runAfterEither(f, f, rs[2]);
1494	>	assertTrue(f.complete(v1));
1495	>	final CompletableFuture<Void> h3 = m.thenRun(f, rs[3]);
1496	>	final CompletableFuture<Void> h4 = m.runAfterBoth(f, f, rs[4]);
1497	>	final CompletableFuture<Void> h5 = m.runAfterEither(f, f, rs[5]);
1498	>
1499	>	checkCompletedWithWrappedException(h0, rs[0].ex);
1500	>	checkCompletedWithWrappedException(h1, rs[1].ex);
1501	>	checkCompletedWithWrappedException(h2, rs[2].ex);
1502	>	checkCompletedWithWrappedException(h3, rs[3].ex);
1503	>	checkCompletedWithWrappedException(h4, rs[4].ex);
1504	>	checkCompletedWithWrappedException(h5, rs[5].ex);
1505		checkCompletedNormally(f, v1);
1506		}}
1507
#	Line 1352 | Line 1510 | public class CompletableFutureTest exten
1510		*/
1511		public void testThenApply_normalCompletion() {
1512		for (ExecutionMode m : ExecutionMode.values())
1355	–	for (boolean createIncomplete : new boolean[] { true, false })
1513		for (Integer v1 : new Integer[] { 1, null })
1514		{
1515		final CompletableFuture<Integer> f = new CompletableFuture<>();
1516	<	final IncFunction r = new IncFunction(m);
1517	<	if (!createIncomplete) assertTrue(f.complete(v1));
1361	<	final CompletableFuture<Integer> g = m.thenApply(f, r);
1362	<	if (createIncomplete) {
1363	<	checkIncomplete(g);
1364	<	assertTrue(f.complete(v1));
1365	<	}
1516	>	final IncFunction[] rs = new IncFunction[4];
1517	>	for (int i = 0; i < rs.length; i++) rs[i] = new IncFunction(m);
1518
1519	<	checkCompletedNormally(g, inc(v1));
1519	>	final CompletableFuture<Integer> h0 = m.thenApply(f, rs[0]);
1520	>	final CompletableFuture<Integer> h1 = m.applyToEither(f, f, rs[1]);
1521	>	checkIncomplete(h0);
1522	>	checkIncomplete(h1);
1523	>	assertTrue(f.complete(v1));
1524	>	final CompletableFuture<Integer> h2 = m.thenApply(f, rs[2]);
1525	>	final CompletableFuture<Integer> h3 = m.applyToEither(f, f, rs[3]);
1526	>
1527	>	checkCompletedNormally(h0, inc(v1));
1528	>	checkCompletedNormally(h1, inc(v1));
1529	>	checkCompletedNormally(h2, inc(v1));
1530	>	checkCompletedNormally(h3, inc(v1));
1531		checkCompletedNormally(f, v1);
1532	<	r.assertValue(inc(v1));
1532	>	for (IncFunction r : rs) r.assertValue(inc(v1));
1533		}}
1534
1535		/**
#	Line 1375 | Line 1538 | public class CompletableFutureTest exten
1538		*/
1539		public void testThenApply_exceptionalCompletion() {
1540		for (ExecutionMode m : ExecutionMode.values())
1378	–	for (boolean createIncomplete : new boolean[] { true, false })
1541		{
1542		final CFException ex = new CFException();
1543		final CompletableFuture<Integer> f = new CompletableFuture<>();
1544	<	final IncFunction r = new IncFunction(m);
1545	<	if (!createIncomplete) f.completeExceptionally(ex);
1384	<	final CompletableFuture<Integer> g = m.thenApply(f, r);
1385	<	if (createIncomplete) {
1386	<	checkIncomplete(g);
1387	<	f.completeExceptionally(ex);
1388	<	}
1544	>	final IncFunction[] rs = new IncFunction[4];
1545	>	for (int i = 0; i < rs.length; i++) rs[i] = new IncFunction(m);
1546
1547	<	checkCompletedWithWrappedException(g, ex);
1547	>	final CompletableFuture<Integer> h0 = m.thenApply(f, rs[0]);
1548	>	final CompletableFuture<Integer> h1 = m.applyToEither(f, f, rs[1]);
1549	>	assertTrue(f.completeExceptionally(ex));
1550	>	final CompletableFuture<Integer> h2 = m.thenApply(f, rs[2]);
1551	>	final CompletableFuture<Integer> h3 = m.applyToEither(f, f, rs[3]);
1552	>
1553	>	checkCompletedWithWrappedException(h0, ex);
1554	>	checkCompletedWithWrappedException(h1, ex);
1555	>	checkCompletedWithWrappedException(h2, ex);
1556	>	checkCompletedWithWrappedException(h3, ex);
1557		checkCompletedExceptionally(f, ex);
1558	<	r.assertNotInvoked();
1558	>	for (IncFunction r : rs) r.assertNotInvoked();
1559		}}
1560
1561		/**
#	Line 1397 | Line 1563 | public class CompletableFutureTest exten
1563		*/
1564		public void testThenApply_sourceCancelled() {
1565		for (ExecutionMode m : ExecutionMode.values())
1400	–	for (boolean createIncomplete : new boolean[] { true, false })
1566		for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1567		{
1568		final CompletableFuture<Integer> f = new CompletableFuture<>();
1569	<	final IncFunction r = new IncFunction(m);
1570	<	if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
1406	<	final CompletableFuture<Integer> g = m.thenApply(f, r);
1407	<	if (createIncomplete) {
1408	<	checkIncomplete(g);
1409	<	assertTrue(f.cancel(mayInterruptIfRunning));
1410	<	}
1569	>	final IncFunction[] rs = new IncFunction[4];
1570	>	for (int i = 0; i < rs.length; i++) rs[i] = new IncFunction(m);
1571
1572	<	checkCompletedWithWrappedCancellationException(g);
1572	>	final CompletableFuture<Integer> h0 = m.thenApply(f, rs[0]);
1573	>	final CompletableFuture<Integer> h1 = m.applyToEither(f, f, rs[1]);
1574	>	assertTrue(f.cancel(mayInterruptIfRunning));
1575	>	final CompletableFuture<Integer> h2 = m.thenApply(f, rs[2]);
1576	>	final CompletableFuture<Integer> h3 = m.applyToEither(f, f, rs[3]);
1577	>
1578	>	checkCompletedWithWrappedCancellationException(h0);
1579	>	checkCompletedWithWrappedCancellationException(h1);
1580	>	checkCompletedWithWrappedCancellationException(h2);
1581	>	checkCompletedWithWrappedCancellationException(h3);
1582		checkCancelled(f);
1583	<	r.assertNotInvoked();
1583	>	for (IncFunction r : rs) r.assertNotInvoked();
1584		}}
1585
1586		/**
#	Line 1419 | Line 1588 | public class CompletableFutureTest exten
1588		*/
1589		public void testThenApply_actionFailed() {
1590		for (ExecutionMode m : ExecutionMode.values())
1422	–	for (boolean createIncomplete : new boolean[] { true, false })
1591		for (Integer v1 : new Integer[] { 1, null })
1592		{
1593		final CompletableFuture<Integer> f = new CompletableFuture<>();
1594	<	final FailingFunction r = new FailingFunction(m);
1595	<	if (!createIncomplete) assertTrue(f.complete(v1));
1596	<	final CompletableFuture<Integer> g = m.thenApply(f, r);
1597	<	if (createIncomplete) {
1598	<	checkIncomplete(g);
1599	<	assertTrue(f.complete(v1));
1600	<	}
1594	>	final FailingFunction[] rs = new FailingFunction[4];
1595	>	for (int i = 0; i < rs.length; i++) rs[i] = new FailingFunction(m);
1596	>
1597	>	final CompletableFuture<Integer> h0 = m.thenApply(f, rs[0]);
1598	>	final CompletableFuture<Integer> h1 = m.applyToEither(f, f, rs[1]);
1599	>	assertTrue(f.complete(v1));
1600	>	final CompletableFuture<Integer> h2 = m.thenApply(f, rs[2]);
1601	>	final CompletableFuture<Integer> h3 = m.applyToEither(f, f, rs[3]);
1602
1603	<	checkCompletedWithWrappedCFException(g);
1603	>	checkCompletedWithWrappedException(h0, rs[0].ex);
1604	>	checkCompletedWithWrappedException(h1, rs[1].ex);
1605	>	checkCompletedWithWrappedException(h2, rs[2].ex);
1606	>	checkCompletedWithWrappedException(h3, rs[3].ex);
1607		checkCompletedNormally(f, v1);
1608		}}
1609
#	Line 1440 | Line 1612 | public class CompletableFutureTest exten
1612		*/
1613		public void testThenAccept_normalCompletion() {
1614		for (ExecutionMode m : ExecutionMode.values())
1443	–	for (boolean createIncomplete : new boolean[] { true, false })
1615		for (Integer v1 : new Integer[] { 1, null })
1616		{
1617		final CompletableFuture<Integer> f = new CompletableFuture<>();
1618	<	final NoopConsumer r = new NoopConsumer(m);
1619	<	if (!createIncomplete) assertTrue(f.complete(v1));
1449	<	final CompletableFuture<Void> g = m.thenAccept(f, r);
1450	<	if (createIncomplete) {
1451	<	checkIncomplete(g);
1452	<	assertTrue(f.complete(v1));
1453	<	}
1618	>	final NoopConsumer[] rs = new NoopConsumer[4];
1619	>	for (int i = 0; i < rs.length; i++) rs[i] = new NoopConsumer(m);
1620
1621	<	checkCompletedNormally(g, null);
1622	<	r.assertValue(v1);
1621	>	final CompletableFuture<Void> h0 = m.thenAccept(f, rs[0]);
1622	>	final CompletableFuture<Void> h1 = m.acceptEither(f, f, rs[1]);
1623	>	checkIncomplete(h0);
1624	>	checkIncomplete(h1);
1625	>	assertTrue(f.complete(v1));
1626	>	final CompletableFuture<Void> h2 = m.thenAccept(f, rs[2]);
1627	>	final CompletableFuture<Void> h3 = m.acceptEither(f, f, rs[3]);
1628	>
1629	>	checkCompletedNormally(h0, null);
1630	>	checkCompletedNormally(h1, null);
1631	>	checkCompletedNormally(h2, null);
1632	>	checkCompletedNormally(h3, null);
1633		checkCompletedNormally(f, v1);
1634	+	for (NoopConsumer r : rs) r.assertValue(v1);
1635		}}
1636
1637		/**
#	Line 1463 | Line 1640 | public class CompletableFutureTest exten
1640		*/
1641		public void testThenAccept_exceptionalCompletion() {
1642		for (ExecutionMode m : ExecutionMode.values())
1466	–	for (boolean createIncomplete : new boolean[] { true, false })
1643		{
1644		final CFException ex = new CFException();
1645		final CompletableFuture<Integer> f = new CompletableFuture<>();
1646	<	final NoopConsumer r = new NoopConsumer(m);
1647	<	if (!createIncomplete) f.completeExceptionally(ex);
1472	<	final CompletableFuture<Void> g = m.thenAccept(f, r);
1473	<	if (createIncomplete) {
1474	<	checkIncomplete(g);
1475	<	f.completeExceptionally(ex);
1476	<	}
1646	>	final NoopConsumer[] rs = new NoopConsumer[4];
1647	>	for (int i = 0; i < rs.length; i++) rs[i] = new NoopConsumer(m);
1648
1649	<	checkCompletedWithWrappedException(g, ex);
1649	>	final CompletableFuture<Void> h0 = m.thenAccept(f, rs[0]);
1650	>	final CompletableFuture<Void> h1 = m.acceptEither(f, f, rs[1]);
1651	>	assertTrue(f.completeExceptionally(ex));
1652	>	final CompletableFuture<Void> h2 = m.thenAccept(f, rs[2]);
1653	>	final CompletableFuture<Void> h3 = m.acceptEither(f, f, rs[3]);
1654	>
1655	>	checkCompletedWithWrappedException(h0, ex);
1656	>	checkCompletedWithWrappedException(h1, ex);
1657	>	checkCompletedWithWrappedException(h2, ex);
1658	>	checkCompletedWithWrappedException(h3, ex);
1659		checkCompletedExceptionally(f, ex);
1660	<	r.assertNotInvoked();
1660	>	for (NoopConsumer r : rs) r.assertNotInvoked();
1661		}}
1662
1663		/**
#	Line 1485 | Line 1665 | public class CompletableFutureTest exten
1665		*/
1666		public void testThenAccept_sourceCancelled() {
1667		for (ExecutionMode m : ExecutionMode.values())
1488	–	for (boolean createIncomplete : new boolean[] { true, false })
1668		for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1669		{
1670		final CompletableFuture<Integer> f = new CompletableFuture<>();
1671	<	final NoopConsumer r = new NoopConsumer(m);
1672	<	if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
1494	<	final CompletableFuture<Void> g = m.thenAccept(f, r);
1495	<	if (createIncomplete) {
1496	<	checkIncomplete(g);
1497	<	assertTrue(f.cancel(mayInterruptIfRunning));
1498	<	}
1671	>	final NoopConsumer[] rs = new NoopConsumer[4];
1672	>	for (int i = 0; i < rs.length; i++) rs[i] = new NoopConsumer(m);
1673
1674	<	checkCompletedWithWrappedCancellationException(g);
1674	>	final CompletableFuture<Void> h0 = m.thenAccept(f, rs[0]);
1675	>	final CompletableFuture<Void> h1 = m.acceptEither(f, f, rs[1]);
1676	>	assertTrue(f.cancel(mayInterruptIfRunning));
1677	>	final CompletableFuture<Void> h2 = m.thenAccept(f, rs[2]);
1678	>	final CompletableFuture<Void> h3 = m.acceptEither(f, f, rs[3]);
1679	>
1680	>	checkCompletedWithWrappedCancellationException(h0);
1681	>	checkCompletedWithWrappedCancellationException(h1);
1682	>	checkCompletedWithWrappedCancellationException(h2);
1683	>	checkCompletedWithWrappedCancellationException(h3);
1684		checkCancelled(f);
1685	<	r.assertNotInvoked();
1685	>	for (NoopConsumer r : rs) r.assertNotInvoked();
1686		}}
1687
1688		/**
#	Line 1507 | Line 1690 | public class CompletableFutureTest exten
1690		*/
1691		public void testThenAccept_actionFailed() {
1692		for (ExecutionMode m : ExecutionMode.values())
1510	–	for (boolean createIncomplete : new boolean[] { true, false })
1693		for (Integer v1 : new Integer[] { 1, null })
1694		{
1695		final CompletableFuture<Integer> f = new CompletableFuture<>();
1696	<	final FailingConsumer r = new FailingConsumer(m);
1697	<	if (!createIncomplete) f.complete(v1);
1516	<	final CompletableFuture<Void> g = m.thenAccept(f, r);
1517	<	if (createIncomplete) {
1518	<	checkIncomplete(g);
1519	<	f.complete(v1);
1520	<	}
1696	>	final FailingConsumer[] rs = new FailingConsumer[4];
1697	>	for (int i = 0; i < rs.length; i++) rs[i] = new FailingConsumer(m);
1698
1699	<	checkCompletedWithWrappedCFException(g);
1699	>	final CompletableFuture<Void> h0 = m.thenAccept(f, rs[0]);
1700	>	final CompletableFuture<Void> h1 = m.acceptEither(f, f, rs[1]);
1701	>	assertTrue(f.complete(v1));
1702	>	final CompletableFuture<Void> h2 = m.thenAccept(f, rs[2]);
1703	>	final CompletableFuture<Void> h3 = m.acceptEither(f, f, rs[3]);
1704	>
1705	>	checkCompletedWithWrappedException(h0, rs[0].ex);
1706	>	checkCompletedWithWrappedException(h1, rs[1].ex);
1707	>	checkCompletedWithWrappedException(h2, rs[2].ex);
1708	>	checkCompletedWithWrappedException(h3, rs[3].ex);
1709		checkCompletedNormally(f, v1);
1710		}}
1711
#	Line 1535 | Line 1721 | public class CompletableFutureTest exten
1721		{
1722		final CompletableFuture<Integer> f = new CompletableFuture<>();
1723		final CompletableFuture<Integer> g = new CompletableFuture<>();
1724	<	final SubtractFunction r1 = new SubtractFunction(m);
1725	<	final SubtractFunction r2 = new SubtractFunction(m);
1540	<	final SubtractFunction r3 = new SubtractFunction(m);
1724	>	final SubtractFunction[] rs = new SubtractFunction[6];
1725	>	for (int i = 0; i < rs.length; i++) rs[i] = new SubtractFunction(m);
1726
1727		final CompletableFuture<Integer> fst =  fFirst ? f : g;
1728		final CompletableFuture<Integer> snd = !fFirst ? f : g;
1729		final Integer w1 =  fFirst ? v1 : v2;
1730		final Integer w2 = !fFirst ? v1 : v2;
1731
1732	<	final CompletableFuture<Integer> h1 = m.thenCombine(f, g, r1);
1732	>	final CompletableFuture<Integer> h0 = m.thenCombine(f, g, rs[0]);
1733	>	final CompletableFuture<Integer> h1 = m.thenCombine(fst, fst, rs[1]);
1734		assertTrue(fst.complete(w1));
1735	<	final CompletableFuture<Integer> h2 = m.thenCombine(f, g, r2);
1736	<	checkIncomplete(h1);
1737	<	checkIncomplete(h2);
1738	<	r1.assertNotInvoked();
1739	<	r2.assertNotInvoked();
1735	>	final CompletableFuture<Integer> h2 = m.thenCombine(f, g, rs[2]);
1736	>	final CompletableFuture<Integer> h3 = m.thenCombine(fst, fst, rs[3]);
1737	>	checkIncomplete(h0); rs[0].assertNotInvoked();
1738	>	checkIncomplete(h2); rs[2].assertNotInvoked();
1739	>	checkCompletedNormally(h1, subtract(w1, w1));
1740	>	checkCompletedNormally(h3, subtract(w1, w1));
1741	>	rs[1].assertValue(subtract(w1, w1));
1742	>	rs[3].assertValue(subtract(w1, w1));
1743		assertTrue(snd.complete(w2));
1744	<	final CompletableFuture<Integer> h3 = m.thenCombine(f, g, r3);
1744	>	final CompletableFuture<Integer> h4 = m.thenCombine(f, g, rs[4]);
1745
1746	<	checkCompletedNormally(h1, subtract(v1, v2));
1746	>	checkCompletedNormally(h0, subtract(v1, v2));
1747		checkCompletedNormally(h2, subtract(v1, v2));
1748	<	checkCompletedNormally(h3, subtract(v1, v2));
1749	<	r1.assertValue(subtract(v1, v2));
1750	<	r2.assertValue(subtract(v1, v2));
1751	<	r3.assertValue(subtract(v1, v2));
1748	>	checkCompletedNormally(h4, subtract(v1, v2));
1749	>	rs[0].assertValue(subtract(v1, v2));
1750	>	rs[2].assertValue(subtract(v1, v2));
1751	>	rs[4].assertValue(subtract(v1, v2));
1752	>
1753		checkCompletedNormally(f, v1);
1754		checkCompletedNormally(g, v2);
1755		}}
#	Line 1677 | Line 1867 | public class CompletableFutureTest exten
1867		assertTrue(snd.complete(w2));
1868		final CompletableFuture<Integer> h3 = m.thenCombine(f, g, r3);
1869
1870	<	checkCompletedWithWrappedCFException(h1);
1871	<	checkCompletedWithWrappedCFException(h2);
1872	<	checkCompletedWithWrappedCFException(h3);
1870	>	checkCompletedWithWrappedException(h1, r1.ex);
1871	>	checkCompletedWithWrappedException(h2, r2.ex);
1872	>	checkCompletedWithWrappedException(h3, r3.ex);
1873		r1.assertInvoked();
1874		r2.assertInvoked();
1875		r3.assertInvoked();
#	Line 1841 | Line 2031 | public class CompletableFutureTest exten
2031		assertTrue(snd.complete(w2));
2032		final CompletableFuture<Void> h3 = m.thenAcceptBoth(f, g, r3);
2033
2034	<	checkCompletedWithWrappedCFException(h1);
2035	<	checkCompletedWithWrappedCFException(h2);
2036	<	checkCompletedWithWrappedCFException(h3);
2034	>	checkCompletedWithWrappedException(h1, r1.ex);
2035	>	checkCompletedWithWrappedException(h2, r2.ex);
2036	>	checkCompletedWithWrappedException(h3, r3.ex);
2037		r1.assertInvoked();
2038		r2.assertInvoked();
2039		r3.assertInvoked();
#	Line 2005 | Line 2195 | public class CompletableFutureTest exten
2195		assertTrue(snd.complete(w2));
2196		final CompletableFuture<Void> h3 = m.runAfterBoth(f, g, r3);
2197
2198	<	checkCompletedWithWrappedCFException(h1);
2199	<	checkCompletedWithWrappedCFException(h2);
2200	<	checkCompletedWithWrappedCFException(h3);
2198	>	checkCompletedWithWrappedException(h1, r1.ex);
2199	>	checkCompletedWithWrappedException(h2, r2.ex);
2200	>	checkCompletedWithWrappedException(h3, r3.ex);
2201		r1.assertInvoked();
2202		r2.assertInvoked();
2203		r3.assertInvoked();
#	Line 2297 | Line 2487 | public class CompletableFutureTest exten
2487		f.complete(v1);
2488		final CompletableFuture<Integer> h2 = m.applyToEither(f, g, rs[2]);
2489		final CompletableFuture<Integer> h3 = m.applyToEither(g, f, rs[3]);
2490	<	checkCompletedWithWrappedCFException(h0);
2491	<	checkCompletedWithWrappedCFException(h1);
2492	<	checkCompletedWithWrappedCFException(h2);
2493	<	checkCompletedWithWrappedCFException(h3);
2490	>	checkCompletedWithWrappedException(h0, rs[0].ex);
2491	>	checkCompletedWithWrappedException(h1, rs[1].ex);
2492	>	checkCompletedWithWrappedException(h2, rs[2].ex);
2493	>	checkCompletedWithWrappedException(h3, rs[3].ex);
2494		for (int i = 0; i < 4; i++) rs[i].assertValue(v1);
2495
2496		g.complete(v2);
#	Line 2309 | Line 2499 | public class CompletableFutureTest exten
2499		final CompletableFuture<Integer> h4 = m.applyToEither(f, g, rs[4]);
2500		final CompletableFuture<Integer> h5 = m.applyToEither(g, f, rs[5]);
2501
2502	<	checkCompletedWithWrappedCFException(h4);
2502	>	checkCompletedWithWrappedException(h4, rs[4].ex);
2503		assertTrue(Objects.equals(v1, rs[4].value) ||
2504		Objects.equals(v2, rs[4].value));
2505	<	checkCompletedWithWrappedCFException(h5);
2505	>	checkCompletedWithWrappedException(h5, rs[5].ex);
2506		assertTrue(Objects.equals(v1, rs[5].value) ||
2507		Objects.equals(v2, rs[5].value));
2508
#	Line 2450 | Line 2640 | public class CompletableFutureTest exten
2640
2641		// unspecified behavior - both source completions available
2642		try {
2643	<	assertEquals(null, h0.join());
2643	>	assertNull(h0.join());
2644		rs[0].assertValue(v1);
2645		} catch (CompletionException ok) {
2646		checkCompletedWithWrappedException(h0, ex);
2647		rs[0].assertNotInvoked();
2648		}
2649		try {
2650	<	assertEquals(null, h1.join());
2650	>	assertNull(h1.join());
2651		rs[1].assertValue(v1);
2652		} catch (CompletionException ok) {
2653		checkCompletedWithWrappedException(h1, ex);
2654		rs[1].assertNotInvoked();
2655		}
2656		try {
2657	<	assertEquals(null, h2.join());
2657	>	assertNull(h2.join());
2658		rs[2].assertValue(v1);
2659		} catch (CompletionException ok) {
2660		checkCompletedWithWrappedException(h2, ex);
2661		rs[2].assertNotInvoked();
2662		}
2663		try {
2664	<	assertEquals(null, h3.join());
2664	>	assertNull(h3.join());
2665		rs[3].assertValue(v1);
2666		} catch (CompletionException ok) {
2667		checkCompletedWithWrappedException(h3, ex);
#	Line 2556 | Line 2746 | public class CompletableFutureTest exten
2746		f.complete(v1);
2747		final CompletableFuture<Void> h2 = m.acceptEither(f, g, rs[2]);
2748		final CompletableFuture<Void> h3 = m.acceptEither(g, f, rs[3]);
2749	<	checkCompletedWithWrappedCFException(h0);
2750	<	checkCompletedWithWrappedCFException(h1);
2751	<	checkCompletedWithWrappedCFException(h2);
2752	<	checkCompletedWithWrappedCFException(h3);
2749	>	checkCompletedWithWrappedException(h0, rs[0].ex);
2750	>	checkCompletedWithWrappedException(h1, rs[1].ex);
2751	>	checkCompletedWithWrappedException(h2, rs[2].ex);
2752	>	checkCompletedWithWrappedException(h3, rs[3].ex);
2753		for (int i = 0; i < 4; i++) rs[i].assertValue(v1);
2754
2755		g.complete(v2);
#	Line 2568 | Line 2758 | public class CompletableFutureTest exten
2758		final CompletableFuture<Void> h4 = m.acceptEither(f, g, rs[4]);
2759		final CompletableFuture<Void> h5 = m.acceptEither(g, f, rs[5]);
2760
2761	<	checkCompletedWithWrappedCFException(h4);
2761	>	checkCompletedWithWrappedException(h4, rs[4].ex);
2762		assertTrue(Objects.equals(v1, rs[4].value) ||
2763		Objects.equals(v2, rs[4].value));
2764	<	checkCompletedWithWrappedCFException(h5);
2764	>	checkCompletedWithWrappedException(h5, rs[5].ex);
2765		assertTrue(Objects.equals(v1, rs[5].value) ||
2766		Objects.equals(v2, rs[5].value));
2767
#	Line 2587 | Line 2777 | public class CompletableFutureTest exten
2777		for (ExecutionMode m : ExecutionMode.values())
2778		for (Integer v1 : new Integer[] { 1, null })
2779		for (Integer v2 : new Integer[] { 2, null })
2780	+	for (boolean pushNop : new boolean[] { true, false })
2781		{
2782		final CompletableFuture<Integer> f = new CompletableFuture<>();
2783		final CompletableFuture<Integer> g = new CompletableFuture<>();
#	Line 2599 | Line 2790 | public class CompletableFutureTest exten
2790		checkIncomplete(h1);
2791		rs[0].assertNotInvoked();
2792		rs[1].assertNotInvoked();
2793	+	if (pushNop) {          // ad hoc test of intra-completion interference
2794	+	m.thenRun(f, () -> {});
2795	+	m.thenRun(g, () -> {});
2796	+	}
2797		f.complete(v1);
2798		checkCompletedNormally(h0, null);
2799		checkCompletedNormally(h1, null);
#	Line 2705 | Line 2900 | public class CompletableFutureTest exten
2900
2901		// unspecified behavior - both source completions available
2902		try {
2903	<	assertEquals(null, h0.join());
2903	>	assertNull(h0.join());
2904		rs[0].assertInvoked();
2905		} catch (CompletionException ok) {
2906		checkCompletedWithWrappedException(h0, ex);
2907		rs[0].assertNotInvoked();
2908		}
2909		try {
2910	<	assertEquals(null, h1.join());
2910	>	assertNull(h1.join());
2911		rs[1].assertInvoked();
2912		} catch (CompletionException ok) {
2913		checkCompletedWithWrappedException(h1, ex);
2914		rs[1].assertNotInvoked();
2915		}
2916		try {
2917	<	assertEquals(null, h2.join());
2917	>	assertNull(h2.join());
2918		rs[2].assertInvoked();
2919		} catch (CompletionException ok) {
2920		checkCompletedWithWrappedException(h2, ex);
2921		rs[2].assertNotInvoked();
2922		}
2923		try {
2924	<	assertEquals(null, h3.join());
2924	>	assertNull(h3.join());
2925		rs[3].assertInvoked();
2926		} catch (CompletionException ok) {
2927		checkCompletedWithWrappedException(h3, ex);
#	Line 2811 | Line 3006 | public class CompletableFutureTest exten
3006		assertTrue(f.complete(v1));
3007		final CompletableFuture<Void> h2 = m.runAfterEither(f, g, rs[2]);
3008		final CompletableFuture<Void> h3 = m.runAfterEither(g, f, rs[3]);
3009	<	checkCompletedWithWrappedCFException(h0);
3010	<	checkCompletedWithWrappedCFException(h1);
3011	<	checkCompletedWithWrappedCFException(h2);
3012	<	checkCompletedWithWrappedCFException(h3);
3009	>	checkCompletedWithWrappedException(h0, rs[0].ex);
3010	>	checkCompletedWithWrappedException(h1, rs[1].ex);
3011	>	checkCompletedWithWrappedException(h2, rs[2].ex);
3012	>	checkCompletedWithWrappedException(h3, rs[3].ex);
3013		for (int i = 0; i < 4; i++) rs[i].assertInvoked();
3014		assertTrue(g.complete(v2));
3015		final CompletableFuture<Void> h4 = m.runAfterEither(f, g, rs[4]);
3016		final CompletableFuture<Void> h5 = m.runAfterEither(g, f, rs[5]);
3017	<	checkCompletedWithWrappedCFException(h4);
3018	<	checkCompletedWithWrappedCFException(h5);
3017	>	checkCompletedWithWrappedException(h4, rs[4].ex);
3018	>	checkCompletedWithWrappedException(h5, rs[5].ex);
3019
3020		checkCompletedNormally(f, v1);
3021		checkCompletedNormally(g, v2);
#	Line 2881 | Line 3076 | public class CompletableFutureTest exten
3076		final CompletableFuture<Integer> g = m.thenCompose(f, r);
3077		if (createIncomplete) assertTrue(f.complete(v1));
3078
3079	<	checkCompletedWithWrappedCFException(g);
3079	>	checkCompletedWithWrappedException(g, r.ex);
3080		checkCompletedNormally(f, v1);
3081		}}
3082
#	Line 2906 | Line 3101 | public class CompletableFutureTest exten
3101		checkCancelled(f);
3102		}}
3103
3104	+	/**
3105	+	* thenCompose result completes exceptionally if the result of the action does
3106	+	*/
3107	+	public void testThenCompose_actionReturnsFailingFuture() {
3108	+	for (ExecutionMode m : ExecutionMode.values())
3109	+	for (int order = 0; order < 6; order++)
3110	+	for (Integer v1 : new Integer[] { 1, null })
3111	+	{
3112	+	final CFException ex = new CFException();
3113	+	final CompletableFuture<Integer> f = new CompletableFuture<>();
3114	+	final CompletableFuture<Integer> g = new CompletableFuture<>();
3115	+	final CompletableFuture<Integer> h;
3116	+	// Test all permutations of orders
3117	+	switch (order) {
3118	+	case 0:
3119	+	assertTrue(f.complete(v1));
3120	+	assertTrue(g.completeExceptionally(ex));
3121	+	h = m.thenCompose(f, x -> g);
3122	+	break;
3123	+	case 1:
3124	+	assertTrue(f.complete(v1));
3125	+	h = m.thenCompose(f, x -> g);
3126	+	assertTrue(g.completeExceptionally(ex));
3127	+	break;
3128	+	case 2:
3129	+	assertTrue(g.completeExceptionally(ex));
3130	+	assertTrue(f.complete(v1));
3131	+	h = m.thenCompose(f, x -> g);
3132	+	break;
3133	+	case 3:
3134	+	assertTrue(g.completeExceptionally(ex));
3135	+	h = m.thenCompose(f, x -> g);
3136	+	assertTrue(f.complete(v1));
3137	+	break;
3138	+	case 4:
3139	+	h = m.thenCompose(f, x -> g);
3140	+	assertTrue(f.complete(v1));
3141	+	assertTrue(g.completeExceptionally(ex));
3142	+	break;
3143	+	case 5:
3144	+	h = m.thenCompose(f, x -> g);
3145	+	assertTrue(f.complete(v1));
3146	+	assertTrue(g.completeExceptionally(ex));
3147	+	break;
3148	+	default: throw new AssertionError();
3149	+	}
3150	+
3151	+	checkCompletedExceptionally(g, ex);
3152	+	checkCompletedWithWrappedException(h, ex);
3153	+	checkCompletedNormally(f, v1);
3154	+	}}
3155	+
3156	+	/**
3157	+	* exceptionallyCompose result completes normally after normal
3158	+	* completion of source
3159	+	*/
3160	+	public void testExceptionallyCompose_normalCompletion() {
3161	+	for (ExecutionMode m : ExecutionMode.values())
3162	+	for (boolean createIncomplete : new boolean[] { true, false })
3163	+	for (Integer v1 : new Integer[] { 1, null })
3164	+	{
3165	+	final CompletableFuture<Integer> f = new CompletableFuture<>();
3166	+	final ExceptionalCompletableFutureFunction r =
3167	+	new ExceptionalCompletableFutureFunction(m);
3168	+	if (!createIncomplete) assertTrue(f.complete(v1));
3169	+	final CompletableFuture<Integer> g = m.exceptionallyCompose(f, r);
3170	+	if (createIncomplete) assertTrue(f.complete(v1));
3171	+
3172	+	checkCompletedNormally(f, v1);
3173	+	checkCompletedNormally(g, v1);
3174	+	r.assertNotInvoked();
3175	+	}}
3176	+
3177	+	/**
3178	+	* exceptionallyCompose result completes normally after exceptional
3179	+	* completion of source
3180	+	*/
3181	+	public void testExceptionallyCompose_exceptionalCompletion() {
3182	+	for (ExecutionMode m : ExecutionMode.values())
3183	+	for (boolean createIncomplete : new boolean[] { true, false })
3184	+	{
3185	+	final CFException ex = new CFException();
3186	+	final ExceptionalCompletableFutureFunction r =
3187	+	new ExceptionalCompletableFutureFunction(m);
3188	+	final CompletableFuture<Integer> f = new CompletableFuture<>();
3189	+	if (!createIncomplete) f.completeExceptionally(ex);
3190	+	final CompletableFuture<Integer> g = m.exceptionallyCompose(f, r);
3191	+	if (createIncomplete) f.completeExceptionally(ex);
3192	+
3193	+	checkCompletedExceptionally(f, ex);
3194	+	checkCompletedNormally(g, r.value);
3195	+	r.assertInvoked();
3196	+	}}
3197	+
3198	+	/**
3199	+	* exceptionallyCompose completes exceptionally on exception if action does
3200	+	*/
3201	+	public void testExceptionallyCompose_actionFailed() {
3202	+	for (ExecutionMode m : ExecutionMode.values())
3203	+	for (boolean createIncomplete : new boolean[] { true, false })
3204	+	{
3205	+	final CFException ex = new CFException();
3206	+	final CompletableFuture<Integer> f = new CompletableFuture<>();
3207	+	final FailingExceptionalCompletableFutureFunction r
3208	+	= new FailingExceptionalCompletableFutureFunction(m);
3209	+	if (!createIncomplete) f.completeExceptionally(ex);
3210	+	final CompletableFuture<Integer> g = m.exceptionallyCompose(f, r);
3211	+	if (createIncomplete) f.completeExceptionally(ex);
3212	+
3213	+	checkCompletedExceptionally(f, ex);
3214	+	checkCompletedWithWrappedException(g, r.ex);
3215	+	r.assertInvoked();
3216	+	}}
3217	+
3218	+	/**
3219	+	* exceptionallyCompose result completes exceptionally if the
3220	+	* result of the action does
3221	+	*/
3222	+	public void testExceptionallyCompose_actionReturnsFailingFuture() {
3223	+	for (ExecutionMode m : ExecutionMode.values())
3224	+	for (int order = 0; order < 6; order++)
3225	+	{
3226	+	final CFException ex0 = new CFException();
3227	+	final CFException ex = new CFException();
3228	+	final CompletableFuture<Integer> f = new CompletableFuture<>();
3229	+	final CompletableFuture<Integer> g = new CompletableFuture<>();
3230	+	final CompletableFuture<Integer> h;
3231	+	// Test all permutations of orders
3232	+	switch (order) {
3233	+	case 0:
3234	+	assertTrue(f.completeExceptionally(ex0));
3235	+	assertTrue(g.completeExceptionally(ex));
3236	+	h = m.exceptionallyCompose(f, x -> g);
3237	+	break;
3238	+	case 1:
3239	+	assertTrue(f.completeExceptionally(ex0));
3240	+	h = m.exceptionallyCompose(f, x -> g);
3241	+	assertTrue(g.completeExceptionally(ex));
3242	+	break;
3243	+	case 2:
3244	+	assertTrue(g.completeExceptionally(ex));
3245	+	assertTrue(f.completeExceptionally(ex0));
3246	+	h = m.exceptionallyCompose(f, x -> g);
3247	+	break;
3248	+	case 3:
3249	+	assertTrue(g.completeExceptionally(ex));
3250	+	h = m.exceptionallyCompose(f, x -> g);
3251	+	assertTrue(f.completeExceptionally(ex0));
3252	+	break;
3253	+	case 4:
3254	+	h = m.exceptionallyCompose(f, x -> g);
3255	+	assertTrue(f.completeExceptionally(ex0));
3256	+	assertTrue(g.completeExceptionally(ex));
3257	+	break;
3258	+	case 5:
3259	+	h = m.exceptionallyCompose(f, x -> g);
3260	+	assertTrue(f.completeExceptionally(ex0));
3261	+	assertTrue(g.completeExceptionally(ex));
3262	+	break;
3263	+	default: throw new AssertionError();
3264	+	}
3265	+
3266	+	checkCompletedExceptionally(g, ex);
3267	+	checkCompletedWithWrappedException(h, ex);
3268	+	checkCompletedExceptionally(f, ex0);
3269	+	}}
3270	+
3271		// other static methods
3272
3273		/**
#	Line 2922 | Line 3284 | public class CompletableFutureTest exten
3284		* when all components complete normally
3285		*/
3286		public void testAllOf_normal() throws Exception {
3287	<	for (int k = 1; k < 20; ++k) {
3287	>	for (int k = 1; k < 10; k++) {
3288		CompletableFuture<Integer>[] fs
3289		= (CompletableFuture<Integer>[]) new CompletableFuture[k];
3290	<	for (int i = 0; i < k; ++i)
3290	>	for (int i = 0; i < k; i++)
3291		fs[i] = new CompletableFuture<>();
3292		CompletableFuture<Void> f = CompletableFuture.allOf(fs);
3293	<	for (int i = 0; i < k; ++i) {
3293	>	for (int i = 0; i < k; i++) {
3294		checkIncomplete(f);
3295		checkIncomplete(CompletableFuture.allOf(fs));
3296		fs[i].complete(one);
#	Line 2938 | Line 3300 | public class CompletableFutureTest exten
3300		}
3301		}
3302
3303	<	public void testAllOf_backwards() throws Exception {
3304	<	for (int k = 1; k < 20; ++k) {
3303	>	public void testAllOf_normal_backwards() throws Exception {
3304	>	for (int k = 1; k < 10; k++) {
3305		CompletableFuture<Integer>[] fs
3306		= (CompletableFuture<Integer>[]) new CompletableFuture[k];
3307	<	for (int i = 0; i < k; ++i)
3307	>	for (int i = 0; i < k; i++)
3308		fs[i] = new CompletableFuture<>();
3309		CompletableFuture<Void> f = CompletableFuture.allOf(fs);
3310		for (int i = k - 1; i >= 0; i--) {
#	Line 2955 | Line 3317 | public class CompletableFutureTest exten
3317		}
3318		}
3319
3320	+	public void testAllOf_exceptional() throws Exception {
3321	+	for (int k = 1; k < 10; k++) {
3322	+	CompletableFuture<Integer>[] fs
3323	+	= (CompletableFuture<Integer>[]) new CompletableFuture[k];
3324	+	CFException ex = new CFException();
3325	+	for (int i = 0; i < k; i++)
3326	+	fs[i] = new CompletableFuture<>();
3327	+	CompletableFuture<Void> f = CompletableFuture.allOf(fs);
3328	+	for (int i = 0; i < k; i++) {
3329	+	checkIncomplete(f);
3330	+	checkIncomplete(CompletableFuture.allOf(fs));
3331	+	if (i != k / 2) {
3332	+	fs[i].complete(i);
3333	+	checkCompletedNormally(fs[i], i);
3334	+	} else {
3335	+	fs[i].completeExceptionally(ex);
3336	+	checkCompletedExceptionally(fs[i], ex);
3337	+	}
3338	+	}
3339	+	checkCompletedWithWrappedException(f, ex);
3340	+	checkCompletedWithWrappedException(CompletableFuture.allOf(fs), ex);
3341	+	}
3342	+	}
3343	+
3344		/**
3345		* anyOf(no component futures) returns an incomplete future
3346		*/
3347		public void testAnyOf_empty() throws Exception {
3348	+	for (Integer v1 : new Integer[] { 1, null })
3349	+	{
3350		CompletableFuture<Object> f = CompletableFuture.anyOf();
3351		checkIncomplete(f);
3352	<	}
3352	>
3353	>	f.complete(v1);
3354	>	checkCompletedNormally(f, v1);
3355	>	}}
3356
3357		/**
3358		* anyOf returns a future completed normally with a value when
3359		* a component future does
3360		*/
3361		public void testAnyOf_normal() throws Exception {
3362	<	for (int k = 0; k < 10; ++k) {
3362	>	for (int k = 0; k < 10; k++) {
3363		CompletableFuture[] fs = new CompletableFuture[k];
3364	<	for (int i = 0; i < k; ++i)
3364	>	for (int i = 0; i < k; i++)
3365		fs[i] = new CompletableFuture<>();
3366		CompletableFuture<Object> f = CompletableFuture.anyOf(fs);
3367		checkIncomplete(f);
3368	<	for (int i = 0; i < k; ++i) {
3369	<	fs[i].complete(one);
3370	<	checkCompletedNormally(f, one);
3371	<	checkCompletedNormally(CompletableFuture.anyOf(fs), one);
3368	>	for (int i = 0; i < k; i++) {
3369	>	fs[i].complete(i);
3370	>	checkCompletedNormally(f, 0);
3371	>	int x = (int) CompletableFuture.anyOf(fs).join();
3372	>	assertTrue(0 <= x && x <= i);
3373	>	}
3374	>	}
3375	>	}
3376	>	public void testAnyOf_normal_backwards() throws Exception {
3377	>	for (int k = 0; k < 10; k++) {
3378	>	CompletableFuture[] fs = new CompletableFuture[k];
3379	>	for (int i = 0; i < k; i++)
3380	>	fs[i] = new CompletableFuture<>();
3381	>	CompletableFuture<Object> f = CompletableFuture.anyOf(fs);
3382	>	checkIncomplete(f);
3383	>	for (int i = k - 1; i >= 0; i--) {
3384	>	fs[i].complete(i);
3385	>	checkCompletedNormally(f, k - 1);
3386	>	int x = (int) CompletableFuture.anyOf(fs).join();
3387	>	assertTrue(i <= x && x <= k - 1);
3388		}
3389		}
3390		}
#	Line 2986 | Line 3393 | public class CompletableFutureTest exten
3393		* anyOf result completes exceptionally when any component does.
3394		*/
3395		public void testAnyOf_exceptional() throws Exception {
3396	<	for (int k = 0; k < 10; ++k) {
3396	>	for (int k = 0; k < 10; k++) {
3397	>	CompletableFuture[] fs = new CompletableFuture[k];
3398	>	CFException[] exs = new CFException[k];
3399	>	for (int i = 0; i < k; i++) {
3400	>	fs[i] = new CompletableFuture<>();
3401	>	exs[i] = new CFException();
3402	>	}
3403	>	CompletableFuture<Object> f = CompletableFuture.anyOf(fs);
3404	>	checkIncomplete(f);
3405	>	for (int i = 0; i < k; i++) {
3406	>	fs[i].completeExceptionally(exs[i]);
3407	>	checkCompletedWithWrappedException(f, exs[0]);
3408	>	checkCompletedWithWrappedCFException(CompletableFuture.anyOf(fs));
3409	>	}
3410	>	}
3411	>	}
3412	>
3413	>	public void testAnyOf_exceptional_backwards() throws Exception {
3414	>	for (int k = 0; k < 10; k++) {
3415		CompletableFuture[] fs = new CompletableFuture[k];
3416	<	for (int i = 0; i < k; ++i)
3416	>	CFException[] exs = new CFException[k];
3417	>	for (int i = 0; i < k; i++) {
3418		fs[i] = new CompletableFuture<>();
3419	+	exs[i] = new CFException();
3420	+	}
3421		CompletableFuture<Object> f = CompletableFuture.anyOf(fs);
3422		checkIncomplete(f);
3423	<	for (int i = 0; i < k; ++i) {
3424	<	fs[i].completeExceptionally(new CFException());
3425	<	checkCompletedWithWrappedCFException(f);
3423	>	for (int i = k - 1; i >= 0; i--) {
3424	>	fs[i].completeExceptionally(exs[i]);
3425	>	checkCompletedWithWrappedException(f, exs[k - 1]);
3426		checkCompletedWithWrappedCFException(CompletableFuture.anyOf(fs));
3427		}
3428		}
#	Line 3003 | Line 3431 | public class CompletableFutureTest exten
3431		/**
3432		* Completion methods throw NullPointerException with null arguments
3433		*/
3434	+	@SuppressWarnings("FutureReturnValueIgnored")
3435		public void testNPE() {
3436		CompletableFuture<Integer> f = new CompletableFuture<>();
3437		CompletableFuture<Integer> g = new CompletableFuture<>();
3438		CompletableFuture<Integer> nullFuture = (CompletableFuture<Integer>)null;
3010	–	CompletableFuture<?> h;
3439		ThreadExecutor exec = new ThreadExecutor();
3440
3441	<	Runnable[] throwingActions = {
3441	>	assertThrows(
3442	>	NullPointerException.class,
3443	>
3444		() -> CompletableFuture.supplyAsync(null),
3445		() -> CompletableFuture.supplyAsync(null, exec),
3446	<	() -> CompletableFuture.supplyAsync(new IntegerSupplier(ExecutionMode.DEFAULT, 42), null),
3446	>	() -> CompletableFuture.supplyAsync(new IntegerSupplier(ExecutionMode.SYNC, 42), null),
3447
3448		() -> CompletableFuture.runAsync(null),
3449		() -> CompletableFuture.runAsync(null, exec),
#	Line 3023 | Line 3453 | public class CompletableFutureTest exten
3453
3454		() -> f.thenApply(null),
3455		() -> f.thenApplyAsync(null),
3456	<	() -> f.thenApplyAsync((x) -> x, null),
3456	>	() -> f.thenApplyAsync(x -> x, null),
3457		() -> f.thenApplyAsync(null, exec),
3458
3459		() -> f.thenAccept(null),
3460		() -> f.thenAcceptAsync(null),
3461	<	() -> f.thenAcceptAsync((x) -> {} , null),
3461	>	() -> f.thenAcceptAsync(x -> {} , null),
3462		() -> f.thenAcceptAsync(null, exec),
3463
3464		() -> f.thenRun(null),
#	Line 3063 | Line 3493 | public class CompletableFutureTest exten
3493		() -> f.applyToEither(g, null),
3494		() -> f.applyToEitherAsync(g, null),
3495		() -> f.applyToEitherAsync(g, null, exec),
3496	<	() -> f.applyToEither(nullFuture, (x) -> x),
3497	<	() -> f.applyToEitherAsync(nullFuture, (x) -> x),
3498	<	() -> f.applyToEitherAsync(nullFuture, (x) -> x, exec),
3499	<	() -> f.applyToEitherAsync(g, (x) -> x, null),
3496	>	() -> f.applyToEither(nullFuture, x -> x),
3497	>	() -> f.applyToEitherAsync(nullFuture, x -> x),
3498	>	() -> f.applyToEitherAsync(nullFuture, x -> x, exec),
3499	>	() -> f.applyToEitherAsync(g, x -> x, null),
3500
3501		() -> f.acceptEither(g, null),
3502		() -> f.acceptEitherAsync(g, null),
3503		() -> f.acceptEitherAsync(g, null, exec),
3504	<	() -> f.acceptEither(nullFuture, (x) -> {}),
3505	<	() -> f.acceptEitherAsync(nullFuture, (x) -> {}),
3506	<	() -> f.acceptEitherAsync(nullFuture, (x) -> {}, exec),
3507	<	() -> f.acceptEitherAsync(g, (x) -> {}, null),
3504	>	() -> f.acceptEither(nullFuture, x -> {}),
3505	>	() -> f.acceptEitherAsync(nullFuture, x -> {}),
3506	>	() -> f.acceptEitherAsync(nullFuture, x -> {}, exec),
3507	>	() -> f.acceptEitherAsync(g, x -> {}, null),
3508
3509		() -> f.runAfterEither(g, null),
3510		() -> f.runAfterEitherAsync(g, null),
#	Line 3104 | Line 3534 | public class CompletableFutureTest exten
3534		() -> CompletableFuture.anyOf(null, f),
3535
3536		() -> f.obtrudeException(null),
3107	–	};
3537
3538	<	assertThrows(NullPointerException.class, throwingActions);
3538	>	() -> CompletableFuture.delayedExecutor(1L, SECONDS, null),
3539	>	() -> CompletableFuture.delayedExecutor(1L, null, exec),
3540	>	() -> CompletableFuture.delayedExecutor(1L, null),
3541	>
3542	>	() -> f.orTimeout(1L, null),
3543	>	() -> f.completeOnTimeout(42, 1L, null),
3544	>
3545	>	() -> CompletableFuture.failedFuture(null),
3546	>	() -> CompletableFuture.failedStage(null));
3547	>
3548		assertEquals(0, exec.count.get());
3549		}
3550
3551		/**
3552	+	* Test submissions to an executor that rejects all tasks.
3553	+	*/
3554	+	public void testRejectingExecutor() {
3555	+	for (Integer v : new Integer[] { 1, null })
3556	+	{
3557	+	final CountingRejectingExecutor e = new CountingRejectingExecutor();
3558	+
3559	+	final CompletableFuture<Integer> complete = CompletableFuture.completedFuture(v);
3560	+	final CompletableFuture<Integer> incomplete = new CompletableFuture<>();
3561	+
3562	+	List<CompletableFuture<?>> futures = new ArrayList<>();
3563	+
3564	+	List<CompletableFuture<Integer>> srcs = new ArrayList<>();
3565	+	srcs.add(complete);
3566	+	srcs.add(incomplete);
3567	+
3568	+	for (CompletableFuture<Integer> src : srcs) {
3569	+	List<CompletableFuture<?>> fs = new ArrayList<>();
3570	+	fs.add(src.thenRunAsync(() -> {}, e));
3571	+	fs.add(src.thenAcceptAsync(z -> {}, e));
3572	+	fs.add(src.thenApplyAsync(z -> z, e));
3573	+
3574	+	fs.add(src.thenCombineAsync(src, (x, y) -> x, e));
3575	+	fs.add(src.thenAcceptBothAsync(src, (x, y) -> {}, e));
3576	+	fs.add(src.runAfterBothAsync(src, () -> {}, e));
3577	+
3578	+	fs.add(src.applyToEitherAsync(src, z -> z, e));
3579	+	fs.add(src.acceptEitherAsync(src, z -> {}, e));
3580	+	fs.add(src.runAfterEitherAsync(src, () -> {}, e));
3581	+
3582	+	fs.add(src.thenComposeAsync(z -> null, e));
3583	+	fs.add(src.whenCompleteAsync((z, t) -> {}, e));
3584	+	fs.add(src.handleAsync((z, t) -> null, e));
3585	+
3586	+	for (CompletableFuture<?> future : fs) {
3587	+	if (src.isDone())
3588	+	checkCompletedWithWrappedException(future, e.ex);
3589	+	else
3590	+	checkIncomplete(future);
3591	+	}
3592	+	futures.addAll(fs);
3593	+	}
3594	+
3595	+	{
3596	+	List<CompletableFuture<?>> fs = new ArrayList<>();
3597	+
3598	+	fs.add(complete.thenCombineAsync(incomplete, (x, y) -> x, e));
3599	+	fs.add(incomplete.thenCombineAsync(complete, (x, y) -> x, e));
3600	+
3601	+	fs.add(complete.thenAcceptBothAsync(incomplete, (x, y) -> {}, e));
3602	+	fs.add(incomplete.thenAcceptBothAsync(complete, (x, y) -> {}, e));
3603	+
3604	+	fs.add(complete.runAfterBothAsync(incomplete, () -> {}, e));
3605	+	fs.add(incomplete.runAfterBothAsync(complete, () -> {}, e));
3606	+
3607	+	for (CompletableFuture<?> future : fs)
3608	+	checkIncomplete(future);
3609	+	futures.addAll(fs);
3610	+	}
3611	+
3612	+	{
3613	+	List<CompletableFuture<?>> fs = new ArrayList<>();
3614	+
3615	+	fs.add(complete.applyToEitherAsync(incomplete, z -> z, e));
3616	+	fs.add(incomplete.applyToEitherAsync(complete, z -> z, e));
3617	+
3618	+	fs.add(complete.acceptEitherAsync(incomplete, z -> {}, e));
3619	+	fs.add(incomplete.acceptEitherAsync(complete, z -> {}, e));
3620	+
3621	+	fs.add(complete.runAfterEitherAsync(incomplete, () -> {}, e));
3622	+	fs.add(incomplete.runAfterEitherAsync(complete, () -> {}, e));
3623	+
3624	+	for (CompletableFuture<?> future : fs)
3625	+	checkCompletedWithWrappedException(future, e.ex);
3626	+	futures.addAll(fs);
3627	+	}
3628	+
3629	+	incomplete.complete(v);
3630	+
3631	+	for (CompletableFuture<?> future : futures)
3632	+	checkCompletedWithWrappedException(future, e.ex);
3633	+
3634	+	assertEquals(futures.size(), e.count.get());
3635	+	}}
3636	+
3637	+	/**
3638	+	* Test submissions to an executor that rejects all tasks, but
3639	+	* should never be invoked because the dependent future is
3640	+	* explicitly completed.
3641	+	*/
3642	+	public void testRejectingExecutorNeverInvoked() {
3643	+	for (Integer v : new Integer[] { 1, null })
3644	+	{
3645	+	final CountingRejectingExecutor e = new CountingRejectingExecutor();
3646	+
3647	+	final CompletableFuture<Integer> complete = CompletableFuture.completedFuture(v);
3648	+	final CompletableFuture<Integer> incomplete = new CompletableFuture<>();
3649	+
3650	+	List<CompletableFuture<?>> fs = new ArrayList<>();
3651	+	fs.add(incomplete.thenRunAsync(() -> {}, e));
3652	+	fs.add(incomplete.thenAcceptAsync(z -> {}, e));
3653	+	fs.add(incomplete.thenApplyAsync(z -> z, e));
3654	+
3655	+	fs.add(incomplete.thenCombineAsync(incomplete, (x, y) -> x, e));
3656	+	fs.add(incomplete.thenAcceptBothAsync(incomplete, (x, y) -> {}, e));
3657	+	fs.add(incomplete.runAfterBothAsync(incomplete, () -> {}, e));
3658	+
3659	+	fs.add(incomplete.applyToEitherAsync(incomplete, z -> z, e));
3660	+	fs.add(incomplete.acceptEitherAsync(incomplete, z -> {}, e));
3661	+	fs.add(incomplete.runAfterEitherAsync(incomplete, () -> {}, e));
3662	+
3663	+	fs.add(incomplete.thenComposeAsync(z -> null, e));
3664	+	fs.add(incomplete.whenCompleteAsync((z, t) -> {}, e));
3665	+	fs.add(incomplete.handleAsync((z, t) -> null, e));
3666	+
3667	+	fs.add(complete.thenCombineAsync(incomplete, (x, y) -> x, e));
3668	+	fs.add(incomplete.thenCombineAsync(complete, (x, y) -> x, e));
3669	+
3670	+	fs.add(complete.thenAcceptBothAsync(incomplete, (x, y) -> {}, e));
3671	+	fs.add(incomplete.thenAcceptBothAsync(complete, (x, y) -> {}, e));
3672	+
3673	+	fs.add(complete.runAfterBothAsync(incomplete, () -> {}, e));
3674	+	fs.add(incomplete.runAfterBothAsync(complete, () -> {}, e));
3675	+
3676	+	for (CompletableFuture<?> future : fs)
3677	+	checkIncomplete(future);
3678	+
3679	+	for (CompletableFuture<?> future : fs)
3680	+	future.complete(null);
3681	+
3682	+	incomplete.complete(v);
3683	+
3684	+	for (CompletableFuture<?> future : fs)
3685	+	checkCompletedNormally(future, null);
3686	+
3687	+	assertEquals(0, e.count.get());
3688	+	}}
3689	+
3690	+	/**
3691		* toCompletableFuture returns this CompletableFuture.
3692		*/
3693		public void testToCompletableFuture() {
#	Line 3118 | Line 3695 | public class CompletableFutureTest exten
3695		assertSame(f, f.toCompletableFuture());
3696		}
3697
3698	+	// jdk9
3699	+
3700	+	/**
3701	+	* newIncompleteFuture returns an incomplete CompletableFuture
3702	+	*/
3703	+	public void testNewIncompleteFuture() {
3704	+	for (Integer v1 : new Integer[] { 1, null })
3705	+	{
3706	+	CompletableFuture<Integer> f = new CompletableFuture<>();
3707	+	CompletableFuture<Integer> g = f.newIncompleteFuture();
3708	+	checkIncomplete(f);
3709	+	checkIncomplete(g);
3710	+	f.complete(v1);
3711	+	checkCompletedNormally(f, v1);
3712	+	checkIncomplete(g);
3713	+	g.complete(v1);
3714	+	checkCompletedNormally(g, v1);
3715	+	assertSame(g.getClass(), CompletableFuture.class);
3716	+	}}
3717	+
3718	+	/**
3719	+	* completedStage returns a completed CompletionStage
3720	+	*/
3721	+	public void testCompletedStage() {
3722	+	AtomicInteger x = new AtomicInteger(0);
3723	+	AtomicReference<Throwable> r = new AtomicReference<>();
3724	+	CompletionStage<Integer> f = CompletableFuture.completedStage(1);
3725	+	f.whenComplete((v, e) -> {if (e != null) r.set(e); else x.set(v);});
3726	+	assertEquals(x.get(), 1);
3727	+	assertNull(r.get());
3728	+	}
3729	+
3730	+	/**
3731	+	* defaultExecutor by default returns the commonPool if
3732	+	* it supports more than one thread.
3733	+	*/
3734	+	public void testDefaultExecutor() {
3735	+	CompletableFuture<Integer> f = new CompletableFuture<>();
3736	+	Executor e = f.defaultExecutor();
3737	+	Executor c = ForkJoinPool.commonPool();
3738	+	if (ForkJoinPool.getCommonPoolParallelism() > 1)
3739	+	assertSame(e, c);
3740	+	else
3741	+	assertNotSame(e, c);
3742	+	}
3743	+
3744	+	/**
3745	+	* failedFuture returns a CompletableFuture completed
3746	+	* exceptionally with the given Exception
3747	+	*/
3748	+	public void testFailedFuture() {
3749	+	CFException ex = new CFException();
3750	+	CompletableFuture<Integer> f = CompletableFuture.failedFuture(ex);
3751	+	checkCompletedExceptionally(f, ex);
3752	+	}
3753	+
3754	+	/**
3755	+	* failedFuture(null) throws NPE
3756	+	*/
3757	+	public void testFailedFuture_null() {
3758	+	try {
3759	+	CompletableFuture<Integer> f = CompletableFuture.failedFuture(null);
3760	+	shouldThrow();
3761	+	} catch (NullPointerException success) {}
3762	+	}
3763	+
3764	+	/**
3765	+	* copy returns a CompletableFuture that is completed normally,
3766	+	* with the same value, when source is.
3767	+	*/
3768	+	public void testCopy_normalCompletion() {
3769	+	for (boolean createIncomplete : new boolean[] { true, false })
3770	+	for (Integer v1 : new Integer[] { 1, null })
3771	+	{
3772	+	CompletableFuture<Integer> f = new CompletableFuture<>();
3773	+	if (!createIncomplete) assertTrue(f.complete(v1));
3774	+	CompletableFuture<Integer> g = f.copy();
3775	+	if (createIncomplete) {
3776	+	checkIncomplete(f);
3777	+	checkIncomplete(g);
3778	+	assertTrue(f.complete(v1));
3779	+	}
3780	+	checkCompletedNormally(f, v1);
3781	+	checkCompletedNormally(g, v1);
3782	+	}}
3783	+
3784	+	/**
3785	+	* copy returns a CompletableFuture that is completed exceptionally
3786	+	* when source is.
3787	+	*/
3788	+	public void testCopy_exceptionalCompletion() {
3789	+	for (boolean createIncomplete : new boolean[] { true, false })
3790	+	{
3791	+	CFException ex = new CFException();
3792	+	CompletableFuture<Integer> f = new CompletableFuture<>();
3793	+	if (!createIncomplete) f.completeExceptionally(ex);
3794	+	CompletableFuture<Integer> g = f.copy();
3795	+	if (createIncomplete) {
3796	+	checkIncomplete(f);
3797	+	checkIncomplete(g);
3798	+	f.completeExceptionally(ex);
3799	+	}
3800	+	checkCompletedExceptionally(f, ex);
3801	+	checkCompletedWithWrappedException(g, ex);
3802	+	}}
3803	+
3804	+	/**
3805	+	* Completion of a copy does not complete its source.
3806	+	*/
3807	+	public void testCopy_oneWayPropagation() {
3808	+	CompletableFuture<Integer> f = new CompletableFuture<>();
3809	+	assertTrue(f.copy().complete(1));
3810	+	assertTrue(f.copy().complete(null));
3811	+	assertTrue(f.copy().cancel(true));
3812	+	assertTrue(f.copy().cancel(false));
3813	+	assertTrue(f.copy().completeExceptionally(new CFException()));
3814	+	checkIncomplete(f);
3815	+	}
3816	+
3817	+	/**
3818	+	* minimalCompletionStage returns a CompletableFuture that is
3819	+	* completed normally, with the same value, when source is.
3820	+	*/
3821	+	public void testMinimalCompletionStage() {
3822	+	CompletableFuture<Integer> f = new CompletableFuture<>();
3823	+	CompletionStage<Integer> g = f.minimalCompletionStage();
3824	+	AtomicInteger x = new AtomicInteger(0);
3825	+	AtomicReference<Throwable> r = new AtomicReference<>();
3826	+	checkIncomplete(f);
3827	+	g.whenComplete((v, e) -> {if (e != null) r.set(e); else x.set(v);});
3828	+	f.complete(1);
3829	+	checkCompletedNormally(f, 1);
3830	+	assertEquals(x.get(), 1);
3831	+	assertNull(r.get());
3832	+	}
3833	+
3834	+	/**
3835	+	* minimalCompletionStage returns a CompletableFuture that is
3836	+	* completed exceptionally when source is.
3837	+	*/
3838	+	public void testMinimalCompletionStage2() {
3839	+	CompletableFuture<Integer> f = new CompletableFuture<>();
3840	+	CompletionStage<Integer> g = f.minimalCompletionStage();
3841	+	AtomicInteger x = new AtomicInteger(0);
3842	+	AtomicReference<Throwable> r = new AtomicReference<>();
3843	+	g.whenComplete((v, e) -> {if (e != null) r.set(e); else x.set(v);});
3844	+	checkIncomplete(f);
3845	+	CFException ex = new CFException();
3846	+	f.completeExceptionally(ex);
3847	+	checkCompletedExceptionally(f, ex);
3848	+	assertEquals(x.get(), 0);
3849	+	assertEquals(r.get().getCause(), ex);
3850	+	}
3851	+
3852	+	/**
3853	+	* failedStage returns a CompletionStage completed
3854	+	* exceptionally with the given Exception
3855	+	*/
3856	+	public void testFailedStage() {
3857	+	CFException ex = new CFException();
3858	+	CompletionStage<Integer> f = CompletableFuture.failedStage(ex);
3859	+	AtomicInteger x = new AtomicInteger(0);
3860	+	AtomicReference<Throwable> r = new AtomicReference<>();
3861	+	f.whenComplete((v, e) -> {if (e != null) r.set(e); else x.set(v);});
3862	+	assertEquals(x.get(), 0);
3863	+	assertEquals(r.get(), ex);
3864	+	}
3865	+
3866	+	/**
3867	+	* completeAsync completes with value of given supplier
3868	+	*/
3869	+	public void testCompleteAsync() {
3870	+	for (Integer v1 : new Integer[] { 1, null })
3871	+	{
3872	+	CompletableFuture<Integer> f = new CompletableFuture<>();
3873	+	f.completeAsync(() -> v1);
3874	+	f.join();
3875	+	checkCompletedNormally(f, v1);
3876	+	}}
3877	+
3878	+	/**
3879	+	* completeAsync completes exceptionally if given supplier throws
3880	+	*/
3881	+	public void testCompleteAsync2() {
3882	+	CompletableFuture<Integer> f = new CompletableFuture<>();
3883	+	CFException ex = new CFException();
3884	+	f.completeAsync(() -> { throw ex; });
3885	+	try {
3886	+	f.join();
3887	+	shouldThrow();
3888	+	} catch (CompletionException success) {}
3889	+	checkCompletedWithWrappedException(f, ex);
3890	+	}
3891	+
3892	+	/**
3893	+	* completeAsync with given executor completes with value of given supplier
3894	+	*/
3895	+	public void testCompleteAsync3() {
3896	+	for (Integer v1 : new Integer[] { 1, null })
3897	+	{
3898	+	CompletableFuture<Integer> f = new CompletableFuture<>();
3899	+	ThreadExecutor executor = new ThreadExecutor();
3900	+	f.completeAsync(() -> v1, executor);
3901	+	assertSame(v1, f.join());
3902	+	checkCompletedNormally(f, v1);
3903	+	assertEquals(1, executor.count.get());
3904	+	}}
3905	+
3906	+	/**
3907	+	* completeAsync with given executor completes exceptionally if
3908	+	* given supplier throws
3909	+	*/
3910	+	public void testCompleteAsync4() {
3911	+	CompletableFuture<Integer> f = new CompletableFuture<>();
3912	+	CFException ex = new CFException();
3913	+	ThreadExecutor executor = new ThreadExecutor();
3914	+	f.completeAsync(() -> { throw ex; }, executor);
3915	+	try {
3916	+	f.join();
3917	+	shouldThrow();
3918	+	} catch (CompletionException success) {}
3919	+	checkCompletedWithWrappedException(f, ex);
3920	+	assertEquals(1, executor.count.get());
3921	+	}
3922	+
3923	+	/**
3924	+	* orTimeout completes with TimeoutException if not complete
3925	+	*/
3926	+	public void testOrTimeout_timesOut() {
3927	+	long timeoutMillis = timeoutMillis();
3928	+	CompletableFuture<Integer> f = new CompletableFuture<>();
3929	+	long startTime = System.nanoTime();
3930	+	assertSame(f, f.orTimeout(timeoutMillis, MILLISECONDS));
3931	+	checkCompletedWithTimeoutException(f);
3932	+	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
3933	+	}
3934	+
3935	+	/**
3936	+	* orTimeout completes normally if completed before timeout
3937	+	*/
3938	+	public void testOrTimeout_completed() {
3939	+	for (Integer v1 : new Integer[] { 1, null })
3940	+	{
3941	+	CompletableFuture<Integer> f = new CompletableFuture<>();
3942	+	CompletableFuture<Integer> g = new CompletableFuture<>();
3943	+	long startTime = System.nanoTime();
3944	+	f.complete(v1);
3945	+	assertSame(f, f.orTimeout(LONG_DELAY_MS, MILLISECONDS));
3946	+	assertSame(g, g.orTimeout(LONG_DELAY_MS, MILLISECONDS));
3947	+	g.complete(v1);
3948	+	checkCompletedNormally(f, v1);
3949	+	checkCompletedNormally(g, v1);
3950	+	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS / 2);
3951	+	}}
3952	+
3953	+	/**
3954	+	* completeOnTimeout completes with given value if not complete
3955	+	*/
3956	+	public void testCompleteOnTimeout_timesOut() {
3957	+	testInParallel(() -> testCompleteOnTimeout_timesOut(42),
3958	+	() -> testCompleteOnTimeout_timesOut(null));
3959	+	}
3960	+
3961	+	/**
3962	+	* completeOnTimeout completes with given value if not complete
3963	+	*/
3964	+	public void testCompleteOnTimeout_timesOut(Integer v) {
3965	+	long timeoutMillis = timeoutMillis();
3966	+	CompletableFuture<Integer> f = new CompletableFuture<>();
3967	+	long startTime = System.nanoTime();
3968	+	assertSame(f, f.completeOnTimeout(v, timeoutMillis, MILLISECONDS));
3969	+	assertSame(v, f.join());
3970	+	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
3971	+	f.complete(99);         // should have no effect
3972	+	checkCompletedNormally(f, v);
3973	+	}
3974	+
3975	+	/**
3976	+	* completeOnTimeout has no effect if completed within timeout
3977	+	*/
3978	+	public void testCompleteOnTimeout_completed() {
3979	+	for (Integer v1 : new Integer[] { 1, null })
3980	+	{
3981	+	CompletableFuture<Integer> f = new CompletableFuture<>();
3982	+	CompletableFuture<Integer> g = new CompletableFuture<>();
3983	+	long startTime = System.nanoTime();
3984	+	f.complete(v1);
3985	+	assertSame(f, f.completeOnTimeout(-1, LONG_DELAY_MS, MILLISECONDS));
3986	+	assertSame(g, g.completeOnTimeout(-1, LONG_DELAY_MS, MILLISECONDS));
3987	+	g.complete(v1);
3988	+	checkCompletedNormally(f, v1);
3989	+	checkCompletedNormally(g, v1);
3990	+	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS / 2);
3991	+	}}
3992	+
3993	+	/**
3994	+	* delayedExecutor returns an executor that delays submission
3995	+	*/
3996	+	public void testDelayedExecutor() {
3997	+	testInParallel(() -> testDelayedExecutor(null, null),
3998	+	() -> testDelayedExecutor(null, 1),
3999	+	() -> testDelayedExecutor(new ThreadExecutor(), 1),
4000	+	() -> testDelayedExecutor(new ThreadExecutor(), 1));
4001	+	}
4002	+
4003	+	public void testDelayedExecutor(Executor executor, Integer v) throws Exception {
4004	+	long timeoutMillis = timeoutMillis();
4005	+	// Use an "unreasonably long" long timeout to catch lingering threads
4006	+	long longTimeoutMillis = 1000 * 60 * 60 * 24;
4007	+	final Executor delayer, longDelayer;
4008	+	if (executor == null) {
4009	+	delayer = CompletableFuture.delayedExecutor(timeoutMillis, MILLISECONDS);
4010	+	longDelayer = CompletableFuture.delayedExecutor(longTimeoutMillis, MILLISECONDS);
4011	+	} else {
4012	+	delayer = CompletableFuture.delayedExecutor(timeoutMillis, MILLISECONDS, executor);
4013	+	longDelayer = CompletableFuture.delayedExecutor(longTimeoutMillis, MILLISECONDS, executor);
4014	+	}
4015	+	long startTime = System.nanoTime();
4016	+	CompletableFuture<Integer> f =
4017	+	CompletableFuture.supplyAsync(() -> v, delayer);
4018	+	CompletableFuture<Integer> g =
4019	+	CompletableFuture.supplyAsync(() -> v, longDelayer);
4020	+
4021	+	assertNull(g.getNow(null));
4022	+
4023	+	assertSame(v, f.get(LONG_DELAY_MS, MILLISECONDS));
4024	+	long millisElapsed = millisElapsedSince(startTime);
4025	+	assertTrue(millisElapsed >= timeoutMillis);
4026	+	assertTrue(millisElapsed < LONG_DELAY_MS / 2);
4027	+
4028	+	checkCompletedNormally(f, v);
4029	+
4030	+	checkIncomplete(g);
4031	+	assertTrue(g.cancel(true));
4032	+	}
4033	+
4034		//--- tests of implementation details; not part of official tck ---
4035
4036		Object resultOf(CompletableFuture<?> f) {
4037	+	SecurityManager sm = System.getSecurityManager();
4038	+	if (sm != null) {
4039	+	try {
4040	+	System.setSecurityManager(null);
4041	+	} catch (SecurityException giveUp) {
4042	+	return "Reflection not available";
4043	+	}
4044	+	}
4045	+
4046		try {
4047		java.lang.reflect.Field resultField
4048		= CompletableFuture.class.getDeclaredField("result");
4049		resultField.setAccessible(true);
4050		return resultField.get(f);
4051	<	} catch (Throwable t) { throw new AssertionError(t); }
4051	>	} catch (Throwable t) {
4052	>	throw new AssertionError(t);
4053	>	} finally {
4054	>	if (sm != null) System.setSecurityManager(sm);
4055	>	}
4056		}
4057
4058		public void testExceptionPropagationReusesResultObject() {
#	Line 3137 | Line 4063 | public class CompletableFutureTest exten
4063		final CompletableFuture<Integer> v42 = CompletableFuture.completedFuture(42);
4064		final CompletableFuture<Integer> incomplete = new CompletableFuture<>();
4065
4066	<	List<Function<CompletableFuture<Integer>, CompletableFuture<?>>> dependentFactories
4067	<	= new ArrayList<>();
4068	<
3143	<	dependentFactories.add((y) -> m.thenRun(y, new Noop(m)));
3144	<	dependentFactories.add((y) -> m.thenAccept(y, new NoopConsumer(m)));
3145	<	dependentFactories.add((y) -> m.thenApply(y, new IncFunction(m)));
3146	<
3147	<	dependentFactories.add((y) -> m.runAfterEither(y, incomplete, new Noop(m)));
3148	<	dependentFactories.add((y) -> m.acceptEither(y, incomplete, new NoopConsumer(m)));
3149	<	dependentFactories.add((y) -> m.applyToEither(y, incomplete, new IncFunction(m)));
4066	>	final Runnable noopRunnable = new Noop(m);
4067	>	final Consumer<Integer> noopConsumer = new NoopConsumer(m);
4068	>	final Function<Integer, Integer> incFunction = new IncFunction(m);
4069
4070	<	dependentFactories.add((y) -> m.runAfterBoth(y, v42, new Noop(m)));
4071	<	dependentFactories.add((y) -> m.thenAcceptBoth(y, v42, new SubtractAction(m)));
3153	<	dependentFactories.add((y) -> m.thenCombine(y, v42, new SubtractFunction(m)));
3154	<
3155	<	dependentFactories.add((y) -> m.whenComplete(y, (Integer x, Throwable t) -> {}));
3156	<
3157	<	dependentFactories.add((y) -> m.thenCompose(y, new CompletableFutureInc(m)));
4070	>	List<Function<CompletableFuture<Integer>, CompletableFuture<?>>> funs
4071	>	= new ArrayList<>();
4072
4073	<	dependentFactories.add((y) -> CompletableFuture.allOf(new CompletableFuture<?>[] {y, v42}));
4074	<	dependentFactories.add((y) -> CompletableFuture.anyOf(new CompletableFuture<?>[] {y, incomplete}));
4073	>	funs.add(y -> m.thenRun(y, noopRunnable));
4074	>	funs.add(y -> m.thenAccept(y, noopConsumer));
4075	>	funs.add(y -> m.thenApply(y, incFunction));
4076	>
4077	>	funs.add(y -> m.runAfterEither(y, incomplete, noopRunnable));
4078	>	funs.add(y -> m.acceptEither(y, incomplete, noopConsumer));
4079	>	funs.add(y -> m.applyToEither(y, incomplete, incFunction));
4080	>
4081	>	funs.add(y -> m.runAfterBoth(y, v42, noopRunnable));
4082	>	funs.add(y -> m.runAfterBoth(v42, y, noopRunnable));
4083	>	funs.add(y -> m.thenAcceptBoth(y, v42, new SubtractAction(m)));
4084	>	funs.add(y -> m.thenAcceptBoth(v42, y, new SubtractAction(m)));
4085	>	funs.add(y -> m.thenCombine(y, v42, new SubtractFunction(m)));
4086	>	funs.add(y -> m.thenCombine(v42, y, new SubtractFunction(m)));
4087	>
4088	>	funs.add(y -> m.whenComplete(y, (Integer r, Throwable t) -> {}));
4089	>
4090	>	funs.add(y -> m.thenCompose(y, new CompletableFutureInc(m)));
4091	>
4092	>	funs.add(y -> CompletableFuture.allOf(y));
4093	>	funs.add(y -> CompletableFuture.allOf(y, v42));
4094	>	funs.add(y -> CompletableFuture.allOf(v42, y));
4095	>	funs.add(y -> CompletableFuture.anyOf(y));
4096	>	funs.add(y -> CompletableFuture.anyOf(y, incomplete));
4097	>	funs.add(y -> CompletableFuture.anyOf(incomplete, y));
4098
4099		for (Function<CompletableFuture<Integer>, CompletableFuture<?>>
4100	<	dependentFactory : dependentFactories) {
4100	>	fun : funs) {
4101		CompletableFuture<Integer> f = new CompletableFuture<>();
4102		f.completeExceptionally(ex);
4103	<	CompletableFuture<Integer> src = m.thenApply(f, new IncFunction(m));
4103	>	CompletableFuture<Integer> src = m.thenApply(f, incFunction);
4104		checkCompletedWithWrappedException(src, ex);
4105	<	CompletableFuture<?> dep = dependentFactory.apply(src);
4105	>	CompletableFuture<?> dep = fun.apply(src);
4106		checkCompletedWithWrappedException(dep, ex);
4107		assertSame(resultOf(src), resultOf(dep));
4108		}
4109
4110		for (Function<CompletableFuture<Integer>, CompletableFuture<?>>
4111	<	dependentFactory : dependentFactories) {
4111	>	fun : funs) {
4112		CompletableFuture<Integer> f = new CompletableFuture<>();
4113	<	CompletableFuture<Integer> src = m.thenApply(f, new IncFunction(m));
4114	<	CompletableFuture<?> dep = dependentFactory.apply(src);
4113	>	CompletableFuture<Integer> src = m.thenApply(f, incFunction);
4114	>	CompletableFuture<?> dep = fun.apply(src);
4115		f.completeExceptionally(ex);
4116		checkCompletedWithWrappedException(src, ex);
4117		checkCompletedWithWrappedException(dep, ex);
#	Line 3183 | Line 4120 | public class CompletableFutureTest exten
4120
4121		for (boolean mayInterruptIfRunning : new boolean[] { true, false })
4122		for (Function<CompletableFuture<Integer>, CompletableFuture<?>>
4123	<	dependentFactory : dependentFactories) {
4123	>	fun : funs) {
4124		CompletableFuture<Integer> f = new CompletableFuture<>();
4125		f.cancel(mayInterruptIfRunning);
4126		checkCancelled(f);
4127	<	CompletableFuture<Integer> src = m.thenApply(f, new IncFunction(m));
4127	>	CompletableFuture<Integer> src = m.thenApply(f, incFunction);
4128		checkCompletedWithWrappedCancellationException(src);
4129	<	CompletableFuture<?> dep = dependentFactory.apply(src);
4129	>	CompletableFuture<?> dep = fun.apply(src);
4130		checkCompletedWithWrappedCancellationException(dep);
4131		assertSame(resultOf(src), resultOf(dep));
4132		}
4133
4134		for (boolean mayInterruptIfRunning : new boolean[] { true, false })
4135		for (Function<CompletableFuture<Integer>, CompletableFuture<?>>
4136	<	dependentFactory : dependentFactories) {
4136	>	fun : funs) {
4137		CompletableFuture<Integer> f = new CompletableFuture<>();
4138	<	CompletableFuture<Integer> src = m.thenApply(f, new IncFunction(m));
4139	<	CompletableFuture<?> dep = dependentFactory.apply(src);
4138	>	CompletableFuture<Integer> src = m.thenApply(f, incFunction);
4139	>	CompletableFuture<?> dep = fun.apply(src);
4140		f.cancel(mayInterruptIfRunning);
4141		checkCancelled(f);
4142		checkCompletedWithWrappedCancellationException(src);
#	Line 3208 | Line 4145 | public class CompletableFutureTest exten
4145		}
4146		}}
4147
4148	+	/**
4149	+	* Minimal completion stages throw UOE for most non-CompletionStage methods
4150	+	*/
4151	+	public void testMinimalCompletionStage_minimality() {
4152	+	if (!testImplementationDetails) return;
4153	+	Function<Method, String> toSignature =
4154	+	method -> method.getName() + Arrays.toString(method.getParameterTypes());
4155	+	Predicate<Method> isNotStatic =
4156	+	method -> (method.getModifiers() & Modifier.STATIC) == 0;
4157	+	List<Method> minimalMethods =
4158	+	Stream.of(Object.class, CompletionStage.class)
4159	+	.flatMap(klazz -> Stream.of(klazz.getMethods()))
4160	+	.filter(isNotStatic)
4161	+	.collect(Collectors.toList());
4162	+	// Methods from CompletableFuture permitted NOT to throw UOE
4163	+	String[] signatureWhitelist = {
4164	+	"newIncompleteFuture[]",
4165	+	"defaultExecutor[]",
4166	+	"minimalCompletionStage[]",
4167	+	"copy[]",
4168	+	};
4169	+	Set<String> permittedMethodSignatures =
4170	+	Stream.concat(minimalMethods.stream().map(toSignature),
4171	+	Stream.of(signatureWhitelist))
4172	+	.collect(Collectors.toSet());
4173	+	List<Method> allMethods = Stream.of(CompletableFuture.class.getMethods())
4174	+	.filter(isNotStatic)
4175	+	.filter(method -> !permittedMethodSignatures.contains(toSignature.apply(method)))
4176	+	.collect(Collectors.toList());
4177	+
4178	+	List<CompletionStage<Integer>> stages = new ArrayList<>();
4179	+	CompletionStage<Integer> min =
4180	+	new CompletableFuture<Integer>().minimalCompletionStage();
4181	+	stages.add(min);
4182	+	stages.add(min.thenApply(x -> x));
4183	+	stages.add(CompletableFuture.completedStage(1));
4184	+	stages.add(CompletableFuture.failedStage(new CFException()));
4185	+
4186	+	List<Method> bugs = new ArrayList<>();
4187	+	for (Method method : allMethods) {
4188	+	Class<?>[] parameterTypes = method.getParameterTypes();
4189	+	Object[] args = new Object[parameterTypes.length];
4190	+	// Manufacture boxed primitives for primitive params
4191	+	for (int i = 0; i < args.length; i++) {
4192	+	Class<?> type = parameterTypes[i];
4193	+	if (parameterTypes[i] == boolean.class)
4194	+	args[i] = false;
4195	+	else if (parameterTypes[i] == int.class)
4196	+	args[i] = 0;
4197	+	else if (parameterTypes[i] == long.class)
4198	+	args[i] = 0L;
4199	+	}
4200	+	for (CompletionStage<Integer> stage : stages) {
4201	+	try {
4202	+	method.invoke(stage, args);
4203	+	bugs.add(method);
4204	+	}
4205	+	catch (java.lang.reflect.InvocationTargetException expected) {
4206	+	if (! (expected.getCause() instanceof UnsupportedOperationException)) {
4207	+	bugs.add(method);
4208	+	// expected.getCause().printStackTrace();
4209	+	}
4210	+	}
4211	+	catch (ReflectiveOperationException bad) { throw new Error(bad); }
4212	+	}
4213	+	}
4214	+	if (!bugs.isEmpty())
4215	+	throw new Error("Methods did not throw UOE: " + bugs);
4216	+	}
4217	+
4218	+	/**
4219	+	* minimalStage.toCompletableFuture() returns a CompletableFuture that
4220	+	* is completed normally, with the same value, when source is.
4221	+	*/
4222	+	public void testMinimalCompletionStage_toCompletableFuture_normalCompletion() {
4223	+	for (boolean createIncomplete : new boolean[] { true, false })
4224	+	for (Integer v1 : new Integer[] { 1, null })
4225	+	{
4226	+	CompletableFuture<Integer> f = new CompletableFuture<>();
4227	+	CompletionStage<Integer> minimal = f.minimalCompletionStage();
4228	+	if (!createIncomplete) assertTrue(f.complete(v1));
4229	+	CompletableFuture<Integer> g = minimal.toCompletableFuture();
4230	+	if (createIncomplete) {
4231	+	checkIncomplete(f);
4232	+	checkIncomplete(g);
4233	+	assertTrue(f.complete(v1));
4234	+	}
4235	+	checkCompletedNormally(f, v1);
4236	+	checkCompletedNormally(g, v1);
4237	+	}}
4238	+
4239	+	/**
4240	+	* minimalStage.toCompletableFuture() returns a CompletableFuture that
4241	+	* is completed exceptionally when source is.
4242	+	*/
4243	+	public void testMinimalCompletionStage_toCompletableFuture_exceptionalCompletion() {
4244	+	for (boolean createIncomplete : new boolean[] { true, false })
4245	+	{
4246	+	CFException ex = new CFException();
4247	+	CompletableFuture<Integer> f = new CompletableFuture<>();
4248	+	CompletionStage<Integer> minimal = f.minimalCompletionStage();
4249	+	if (!createIncomplete) f.completeExceptionally(ex);
4250	+	CompletableFuture<Integer> g = minimal.toCompletableFuture();
4251	+	if (createIncomplete) {
4252	+	checkIncomplete(f);
4253	+	checkIncomplete(g);
4254	+	f.completeExceptionally(ex);
4255	+	}
4256	+	checkCompletedExceptionally(f, ex);
4257	+	checkCompletedWithWrappedException(g, ex);
4258	+	}}
4259	+
4260	+	/**
4261	+	* minimalStage.toCompletableFuture() gives mutable CompletableFuture
4262	+	*/
4263	+	public void testMinimalCompletionStage_toCompletableFuture_mutable() {
4264	+	for (Integer v1 : new Integer[] { 1, null })
4265	+	{
4266	+	CompletableFuture<Integer> f = new CompletableFuture<>();
4267	+	CompletionStage minimal = f.minimalCompletionStage();
4268	+	CompletableFuture<Integer> g = minimal.toCompletableFuture();
4269	+	assertTrue(g.complete(v1));
4270	+	checkCompletedNormally(g, v1);
4271	+	checkIncomplete(f);
4272	+	checkIncomplete(minimal.toCompletableFuture());
4273	+	}}
4274	+
4275	+	/**
4276	+	* minimalStage.toCompletableFuture().join() awaits completion
4277	+	*/
4278	+	public void testMinimalCompletionStage_toCompletableFuture_join() throws Exception {
4279	+	for (boolean createIncomplete : new boolean[] { true, false })
4280	+	for (Integer v1 : new Integer[] { 1, null })
4281	+	{
4282	+	CompletableFuture<Integer> f = new CompletableFuture<>();
4283	+	if (!createIncomplete) assertTrue(f.complete(v1));
4284	+	CompletionStage<Integer> minimal = f.minimalCompletionStage();
4285	+	if (createIncomplete) assertTrue(f.complete(v1));
4286	+	assertEquals(v1, minimal.toCompletableFuture().join());
4287	+	assertEquals(v1, minimal.toCompletableFuture().get());
4288	+	checkCompletedNormally(minimal.toCompletableFuture(), v1);
4289	+	}}
4290	+
4291	+	/**
4292	+	* Completion of a toCompletableFuture copy of a minimal stage
4293	+	* does not complete its source.
4294	+	*/
4295	+	public void testMinimalCompletionStage_toCompletableFuture_oneWayPropagation() {
4296	+	CompletableFuture<Integer> f = new CompletableFuture<>();
4297	+	CompletionStage<Integer> g = f.minimalCompletionStage();
4298	+	assertTrue(g.toCompletableFuture().complete(1));
4299	+	assertTrue(g.toCompletableFuture().complete(null));
4300	+	assertTrue(g.toCompletableFuture().cancel(true));
4301	+	assertTrue(g.toCompletableFuture().cancel(false));
4302	+	assertTrue(g.toCompletableFuture().completeExceptionally(new CFException()));
4303	+	checkIncomplete(g.toCompletableFuture());
4304	+	f.complete(1);
4305	+	checkCompletedNormally(g.toCompletableFuture(), 1);
4306	+	}
4307	+
4308	+	/** Demo utility method for external reliable toCompletableFuture */
4309	+	static <T> CompletableFuture<T> toCompletableFuture(CompletionStage<T> stage) {
4310	+	CompletableFuture<T> f = new CompletableFuture<>();
4311	+	stage.handle((T t, Throwable ex) -> {
4312	+	if (ex != null) f.completeExceptionally(ex);
4313	+	else f.complete(t);
4314	+	return null;
4315	+	});
4316	+	return f;
4317	+	}
4318	+
4319	+	/** Demo utility method to join a CompletionStage */
4320	+	static <T> T join(CompletionStage<T> stage) {
4321	+	return toCompletableFuture(stage).join();
4322	+	}
4323	+
4324	+	/**
4325	+	* Joining a minimal stage "by hand" works
4326	+	*/
4327	+	public void testMinimalCompletionStage_join_by_hand() {
4328	+	for (boolean createIncomplete : new boolean[] { true, false })
4329	+	for (Integer v1 : new Integer[] { 1, null })
4330	+	{
4331	+	CompletableFuture<Integer> f = new CompletableFuture<>();
4332	+	CompletionStage<Integer> minimal = f.minimalCompletionStage();
4333	+	CompletableFuture<Integer> g = new CompletableFuture<>();
4334	+	if (!createIncomplete) assertTrue(f.complete(v1));
4335	+	minimal.thenAccept(x -> g.complete(x));
4336	+	if (createIncomplete) assertTrue(f.complete(v1));
4337	+	g.join();
4338	+	checkCompletedNormally(g, v1);
4339	+	checkCompletedNormally(f, v1);
4340	+	assertEquals(v1, join(minimal));
4341	+	}}
4342	+
4343	+	static class Monad {
4344	+	static class ZeroException extends RuntimeException {
4345	+	public ZeroException() { super("monadic zero"); }
4346	+	}
4347	+	// "return", "unit"
4348	+	static <T> CompletableFuture<T> unit(T value) {
4349	+	return completedFuture(value);
4350	+	}
4351	+	// monadic zero ?
4352	+	static <T> CompletableFuture<T> zero() {
4353	+	return failedFuture(new ZeroException());
4354	+	}
4355	+	// >=>
4356	+	static <T,U,V> Function<T, CompletableFuture<V>> compose
4357	+	(Function<T, CompletableFuture<U>> f,
4358	+	Function<U, CompletableFuture<V>> g) {
4359	+	return x -> f.apply(x).thenCompose(g);
4360	+	}
4361	+
4362	+	static void assertZero(CompletableFuture<?> f) {
4363	+	try {
4364	+	f.getNow(null);
4365	+	throw new AssertionError("should throw");
4366	+	} catch (CompletionException success) {
4367	+	assertTrue(success.getCause() instanceof ZeroException);
4368	+	}
4369	+	}
4370	+
4371	+	static <T> void assertFutureEquals(CompletableFuture<T> f,
4372	+	CompletableFuture<T> g) {
4373	+	T fval = null, gval = null;
4374	+	Throwable fex = null, gex = null;
4375	+
4376	+	try { fval = f.get(); }
4377	+	catch (ExecutionException ex) { fex = ex.getCause(); }
4378	+	catch (Throwable ex) { fex = ex; }
4379	+
4380	+	try { gval = g.get(); }
4381	+	catch (ExecutionException ex) { gex = ex.getCause(); }
4382	+	catch (Throwable ex) { gex = ex; }
4383	+
4384	+	if (fex != null || gex != null)
4385	+	assertSame(fex.getClass(), gex.getClass());
4386	+	else
4387	+	assertEquals(fval, gval);
4388	+	}
4389	+
4390	+	static class PlusFuture<T> extends CompletableFuture<T> {
4391	+	AtomicReference<Throwable> firstFailure = new AtomicReference<>(null);
4392	+	}
4393	+
4394	+	/** Implements "monadic plus". */
4395	+	static <T> CompletableFuture<T> plus(CompletableFuture<? extends T> f,
4396	+	CompletableFuture<? extends T> g) {
4397	+	PlusFuture<T> plus = new PlusFuture<T>();
4398	+	BiConsumer<T, Throwable> action = (T result, Throwable ex) -> {
4399	+	try {
4400	+	if (ex == null) {
4401	+	if (plus.complete(result))
4402	+	if (plus.firstFailure.get() != null)
4403	+	plus.firstFailure.set(null);
4404	+	}
4405	+	else if (plus.firstFailure.compareAndSet(null, ex)) {
4406	+	if (plus.isDone())
4407	+	plus.firstFailure.set(null);
4408	+	}
4409	+	else {
4410	+	// first failure has precedence
4411	+	Throwable first = plus.firstFailure.getAndSet(null);
4412	+
4413	+	// may fail with "Self-suppression not permitted"
4414	+	try { first.addSuppressed(ex); }
4415	+	catch (Exception ignored) {}
4416	+
4417	+	plus.completeExceptionally(first);
4418	+	}
4419	+	} catch (Throwable unexpected) {
4420	+	plus.completeExceptionally(unexpected);
4421	+	}
4422	+	};
4423	+	f.whenComplete(action);
4424	+	g.whenComplete(action);
4425	+	return plus;
4426	+	}
4427	+	}
4428	+
4429	+	/**
4430	+	* CompletableFuture is an additive monad - sort of.
4431	+	* https://en.wikipedia.org/wiki/Monad_(functional_programming)#Additive_monads
4432	+	*/
4433	+	public void testAdditiveMonad() throws Throwable {
4434	+	Function<Long, CompletableFuture<Long>> unit = Monad::unit;
4435	+	CompletableFuture<Long> zero = Monad.zero();
4436	+
4437	+	// Some mutually non-commutative functions
4438	+	Function<Long, CompletableFuture<Long>> triple
4439	+	= x -> Monad.unit(3 * x);
4440	+	Function<Long, CompletableFuture<Long>> inc
4441	+	= x -> Monad.unit(x + 1);
4442	+
4443	+	// unit is a right identity: m >>= unit === m
4444	+	Monad.assertFutureEquals(inc.apply(5L).thenCompose(unit),
4445	+	inc.apply(5L));
4446	+	// unit is a left identity: (unit x) >>= f === f x
4447	+	Monad.assertFutureEquals(unit.apply(5L).thenCompose(inc),
4448	+	inc.apply(5L));
4449	+
4450	+	// associativity: (m >>= f) >>= g === m >>= ( \x -> (f x >>= g) )
4451	+	Monad.assertFutureEquals(
4452	+	unit.apply(5L).thenCompose(inc).thenCompose(triple),
4453	+	unit.apply(5L).thenCompose(x -> inc.apply(x).thenCompose(triple)));
4454	+
4455	+	// The case for CompletableFuture as an additive monad is weaker...
4456	+
4457	+	// zero is a monadic zero
4458	+	Monad.assertZero(zero);
4459	+
4460	+	// left zero: zero >>= f === zero
4461	+	Monad.assertZero(zero.thenCompose(inc));
4462	+	// right zero: f >>= (\x -> zero) === zero
4463	+	Monad.assertZero(inc.apply(5L).thenCompose(x -> zero));
4464	+
4465	+	// f plus zero === f
4466	+	Monad.assertFutureEquals(Monad.unit(5L),
4467	+	Monad.plus(Monad.unit(5L), zero));
4468	+	// zero plus f === f
4469	+	Monad.assertFutureEquals(Monad.unit(5L),
4470	+	Monad.plus(zero, Monad.unit(5L)));
4471	+	// zero plus zero === zero
4472	+	Monad.assertZero(Monad.plus(zero, zero));
4473	+	{
4474	+	CompletableFuture<Long> f = Monad.plus(Monad.unit(5L),
4475	+	Monad.unit(8L));
4476	+	// non-determinism
4477	+	assertTrue(f.get() == 5L || f.get() == 8L);
4478	+	}
4479	+
4480	+	CompletableFuture<Long> godot = new CompletableFuture<>();
4481	+	// f plus godot === f (doesn't wait for godot)
4482	+	Monad.assertFutureEquals(Monad.unit(5L),
4483	+	Monad.plus(Monad.unit(5L), godot));
4484	+	// godot plus f === f (doesn't wait for godot)
4485	+	Monad.assertFutureEquals(Monad.unit(5L),
4486	+	Monad.plus(godot, Monad.unit(5L)));
4487	+	}
4488	+
4489	+	/** Test long recursive chains of CompletableFutures with cascading completions */
4490	+	@SuppressWarnings("FutureReturnValueIgnored")
4491	+	public void testRecursiveChains() throws Throwable {
4492	+	for (ExecutionMode m : ExecutionMode.values())
4493	+	for (boolean addDeadEnds : new boolean[] { true, false })
4494	+	{
4495	+	final int val = 42;
4496	+	final int n = expensiveTests ? 1_000 : 2;
4497	+	CompletableFuture<Integer> head = new CompletableFuture<>();
4498	+	CompletableFuture<Integer> tail = head;
4499	+	for (int i = 0; i < n; i++) {
4500	+	if (addDeadEnds) m.thenApply(tail, v -> v + 1);
4501	+	tail = m.thenApply(tail, v -> v + 1);
4502	+	if (addDeadEnds) m.applyToEither(tail, tail, v -> v + 1);
4503	+	tail = m.applyToEither(tail, tail, v -> v + 1);
4504	+	if (addDeadEnds) m.thenCombine(tail, tail, (v, w) -> v + 1);
4505	+	tail = m.thenCombine(tail, tail, (v, w) -> v + 1);
4506	+	}
4507	+	head.complete(val);
4508	+	assertEquals(val + 3 * n, (int) tail.join());
4509	+	}}
4510	+
4511	+	/**
4512	+	* A single CompletableFuture with many dependents.
4513	+	* A demo of scalability - runtime is O(n).
4514	+	*/
4515	+	@SuppressWarnings("FutureReturnValueIgnored")
4516	+	public void testManyDependents() throws Throwable {
4517	+	final int n = expensiveTests ? 1_000_000 : 10;
4518	+	final CompletableFuture<Void> head = new CompletableFuture<>();
4519	+	final CompletableFuture<Void> complete = CompletableFuture.completedFuture((Void)null);
4520	+	final AtomicInteger count = new AtomicInteger(0);
4521	+	for (int i = 0; i < n; i++) {
4522	+	head.thenRun(() -> count.getAndIncrement());
4523	+	head.thenAccept(x -> count.getAndIncrement());
4524	+	head.thenApply(x -> count.getAndIncrement());
4525	+
4526	+	head.runAfterBoth(complete, () -> count.getAndIncrement());
4527	+	head.thenAcceptBoth(complete, (x, y) -> count.getAndIncrement());
4528	+	head.thenCombine(complete, (x, y) -> count.getAndIncrement());
4529	+	complete.runAfterBoth(head, () -> count.getAndIncrement());
4530	+	complete.thenAcceptBoth(head, (x, y) -> count.getAndIncrement());
4531	+	complete.thenCombine(head, (x, y) -> count.getAndIncrement());
4532	+
4533	+	head.runAfterEither(new CompletableFuture<Void>(), () -> count.getAndIncrement());
4534	+	head.acceptEither(new CompletableFuture<Void>(), x -> count.getAndIncrement());
4535	+	head.applyToEither(new CompletableFuture<Void>(), x -> count.getAndIncrement());
4536	+	new CompletableFuture<Void>().runAfterEither(head, () -> count.getAndIncrement());
4537	+	new CompletableFuture<Void>().acceptEither(head, x -> count.getAndIncrement());
4538	+	new CompletableFuture<Void>().applyToEither(head, x -> count.getAndIncrement());
4539	+	}
4540	+	head.complete(null);
4541	+	assertEquals(5 * 3 * n, count.get());
4542	+	}
4543	+
4544	+	/** ant -Dvmoptions=-Xmx8m -Djsr166.expensiveTests=true -Djsr166.tckTestClass=CompletableFutureTest tck */
4545	+	@SuppressWarnings("FutureReturnValueIgnored")
4546	+	public void testCoCompletionGarbageRetention() throws Throwable {
4547	+	final int n = expensiveTests ? 1_000_000 : 10;
4548	+	final CompletableFuture<Integer> incomplete = new CompletableFuture<>();
4549	+	CompletableFuture<Integer> f;
4550	+	for (int i = 0; i < n; i++) {
4551	+	f = new CompletableFuture<>();
4552	+	f.runAfterEither(incomplete, () -> {});
4553	+	f.complete(null);
4554	+
4555	+	f = new CompletableFuture<>();
4556	+	f.acceptEither(incomplete, x -> {});
4557	+	f.complete(null);
4558	+
4559	+	f = new CompletableFuture<>();
4560	+	f.applyToEither(incomplete, x -> x);
4561	+	f.complete(null);
4562	+
4563	+	f = new CompletableFuture<>();
4564	+	CompletableFuture.anyOf(f, incomplete);
4565	+	f.complete(null);
4566	+	}
4567	+
4568	+	for (int i = 0; i < n; i++) {
4569	+	f = new CompletableFuture<>();
4570	+	incomplete.runAfterEither(f, () -> {});
4571	+	f.complete(null);
4572	+
4573	+	f = new CompletableFuture<>();
4574	+	incomplete.acceptEither(f, x -> {});
4575	+	f.complete(null);
4576	+
4577	+	f = new CompletableFuture<>();
4578	+	incomplete.applyToEither(f, x -> x);
4579	+	f.complete(null);
4580	+
4581	+	f = new CompletableFuture<>();
4582	+	CompletableFuture.anyOf(incomplete, f);
4583	+	f.complete(null);
4584	+	}
4585	+	}
4586	+
4587	+	/**
4588	+	* Reproduction recipe for:
4589	+	* 8160402: Garbage retention with CompletableFuture.anyOf
4590	+	* 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
4591	+	*/
4592	+	public void testAnyOfGarbageRetention() throws Throwable {
4593	+	for (Integer v : new Integer[] { 1, null })
4594	+	{
4595	+	final int n = expensiveTests ? 100_000 : 10;
4596	+	CompletableFuture<Integer>[] fs
4597	+	= (CompletableFuture<Integer>[]) new CompletableFuture<?>[100];
4598	+	for (int i = 0; i < fs.length; i++)
4599	+	fs[i] = new CompletableFuture<>();
4600	+	fs[fs.length - 1].complete(v);
4601	+	for (int i = 0; i < n; i++)
4602	+	checkCompletedNormally(CompletableFuture.anyOf(fs), v);
4603	+	}}
4604	+
4605	+	/**
4606	+	* Checks for garbage retention with allOf.
4607	+	*
4608	+	* As of 2016-07, fails with OOME:
4609	+	* ant -Dvmoptions=-Xmx8m -Djsr166.expensiveTests=true -Djsr166.tckTestClass=CompletableFutureTest -Djsr166.methodFilter=testCancelledAllOfGarbageRetention tck
4610	+	*/
4611	+	public void testCancelledAllOfGarbageRetention() throws Throwable {
4612	+	final int n = expensiveTests ? 100_000 : 10;
4613	+	CompletableFuture<Integer>[] fs
4614	+	= (CompletableFuture<Integer>[]) new CompletableFuture<?>[100];
4615	+	for (int i = 0; i < fs.length; i++)
4616	+	fs[i] = new CompletableFuture<>();
4617	+	for (int i = 0; i < n; i++)
4618	+	assertTrue(CompletableFuture.allOf(fs).cancel(false));
4619	+	}
4620	+
4621	+	/**
4622	+	* Checks for garbage retention when a dependent future is
4623	+	* cancelled and garbage-collected.
4624	+	* 8161600: Garbage retention when source CompletableFutures are never completed
4625	+	*
4626	+	* As of 2016-07, fails with OOME:
4627	+	* ant -Dvmoptions=-Xmx8m -Djsr166.expensiveTests=true -Djsr166.tckTestClass=CompletableFutureTest -Djsr166.methodFilter=testCancelledGarbageRetention tck
4628	+	*/
4629	+	public void testCancelledGarbageRetention() throws Throwable {
4630	+	final int n = expensiveTests ? 100_000 : 10;
4631	+	CompletableFuture<Integer> neverCompleted = new CompletableFuture<>();
4632	+	for (int i = 0; i < n; i++)
4633	+	assertTrue(neverCompleted.thenRun(() -> {}).cancel(true));
4634	+	}
4635	+
4636	+	/**
4637	+	* Checks for garbage retention when MinimalStage.toCompletableFuture()
4638	+	* is invoked many times.
4639	+	* 8161600: Garbage retention when source CompletableFutures are never completed
4640	+	*
4641	+	* As of 2016-07, fails with OOME:
4642	+	* ant -Dvmoptions=-Xmx8m -Djsr166.expensiveTests=true -Djsr166.tckTestClass=CompletableFutureTest -Djsr166.methodFilter=testToCompletableFutureGarbageRetention tck
4643	+	*/
4644	+	public void testToCompletableFutureGarbageRetention() throws Throwable {
4645	+	final int n = expensiveTests ? 900_000 : 10;
4646	+	CompletableFuture<Integer> neverCompleted = new CompletableFuture<>();
4647	+	CompletionStage minimal = neverCompleted.minimalCompletionStage();
4648	+	for (int i = 0; i < n; i++)
4649	+	assertTrue(minimal.toCompletableFuture().cancel(true));
4650	+	}
4651	+
4652	+	//     static <U> U join(CompletionStage<U> stage) {
4653	+	//         CompletableFuture<U> f = new CompletableFuture<>();
4654	+	//         stage.whenComplete((v, ex) -> {
4655	+	//             if (ex != null) f.completeExceptionally(ex); else f.complete(v);
4656	+	//         });
4657	+	//         return f.join();
4658	+	//     }
4659	+
4660	+	//     static <U> boolean isDone(CompletionStage<U> stage) {
4661	+	//         CompletableFuture<U> f = new CompletableFuture<>();
4662	+	//         stage.whenComplete((v, ex) -> {
4663	+	//             if (ex != null) f.completeExceptionally(ex); else f.complete(v);
4664	+	//         });
4665	+	//         return f.isDone();
4666	+	//     }
4667	+
4668	+	//     static <U> U join2(CompletionStage<U> stage) {
4669	+	//         return stage.toCompletableFuture().copy().join();
4670	+	//     }
4671	+
4672	+	//     static <U> boolean isDone2(CompletionStage<U> stage) {
4673	+	//         return stage.toCompletableFuture().copy().isDone();
4674	+	//     }
4675	+
4676	+	// For testing default implementations
4677	+	// Only non-default interface methods defined.
4678	+	static final class DelegatedCompletionStage<T> implements CompletionStage<T> {
4679	+	final CompletableFuture<T> cf;
4680	+	DelegatedCompletionStage(CompletableFuture<T> cf) { this.cf = cf; }
4681	+	public CompletableFuture<T> toCompletableFuture() {
4682	+	return cf; }
4683	+	public CompletionStage<Void> thenRun
4684	+	(Runnable action) {
4685	+	return cf.thenRun(action); }
4686	+	public CompletionStage<Void> thenRunAsync
4687	+	(Runnable action) {
4688	+	return cf.thenRunAsync(action); }
4689	+	public CompletionStage<Void> thenRunAsync
4690	+	(Runnable action,
4691	+	Executor executor) {
4692	+	return cf.thenRunAsync(action, executor); }
4693	+	public CompletionStage<Void> thenAccept
4694	+	(Consumer<? super T> action) {
4695	+	return cf.thenAccept(action); }
4696	+	public CompletionStage<Void> thenAcceptAsync
4697	+	(Consumer<? super T> action) {
4698	+	return cf.thenAcceptAsync(action); }
4699	+	public CompletionStage<Void> thenAcceptAsync
4700	+	(Consumer<? super T> action,
4701	+	Executor executor) {
4702	+	return cf.thenAcceptAsync(action, executor); }
4703	+	public <U> CompletionStage<U> thenApply
4704	+	(Function<? super T,? extends U> a) {
4705	+	return cf.thenApply(a); }
4706	+	public <U> CompletionStage<U> thenApplyAsync
4707	+	(Function<? super T,? extends U> fn) {
4708	+	return cf.thenApplyAsync(fn); }
4709	+	public <U> CompletionStage<U> thenApplyAsync
4710	+	(Function<? super T,? extends U> fn,
4711	+	Executor executor) {
4712	+	return cf.thenApplyAsync(fn, executor); }
4713	+	public <U,V> CompletionStage<V> thenCombine
4714	+	(CompletionStage<? extends U> other,
4715	+	BiFunction<? super T,? super U,? extends V> fn) {
4716	+	return cf.thenCombine(other, fn); }
4717	+	public <U,V> CompletionStage<V> thenCombineAsync
4718	+	(CompletionStage<? extends U> other,
4719	+	BiFunction<? super T,? super U,? extends V> fn) {
4720	+	return cf.thenCombineAsync(other, fn); }
4721	+	public <U,V> CompletionStage<V> thenCombineAsync
4722	+	(CompletionStage<? extends U> other,
4723	+	BiFunction<? super T,? super U,? extends V> fn,
4724	+	Executor executor) {
4725	+	return cf.thenCombineAsync(other, fn, executor); }
4726	+	public <U> CompletionStage<Void> thenAcceptBoth
4727	+	(CompletionStage<? extends U> other,
4728	+	BiConsumer<? super T, ? super U> action) {
4729	+	return cf.thenAcceptBoth(other, action); }
4730	+	public <U> CompletionStage<Void> thenAcceptBothAsync
4731	+	(CompletionStage<? extends U> other,
4732	+	BiConsumer<? super T, ? super U> action) {
4733	+	return cf.thenAcceptBothAsync(other, action); }
4734	+	public <U> CompletionStage<Void> thenAcceptBothAsync
4735	+	(CompletionStage<? extends U> other,
4736	+	BiConsumer<? super T, ? super U> action,
4737	+	Executor executor) {
4738	+	return cf.thenAcceptBothAsync(other, action, executor); }
4739	+	public CompletionStage<Void> runAfterBoth
4740	+	(CompletionStage<?> other,
4741	+	Runnable action) {
4742	+	return cf.runAfterBoth(other, action); }
4743	+	public CompletionStage<Void> runAfterBothAsync
4744	+	(CompletionStage<?> other,
4745	+	Runnable action) {
4746	+	return cf.runAfterBothAsync(other, action); }
4747	+	public CompletionStage<Void> runAfterBothAsync
4748	+	(CompletionStage<?> other,
4749	+	Runnable action,
4750	+	Executor executor) {
4751	+	return cf.runAfterBothAsync(other, action, executor); }
4752	+	public <U> CompletionStage<U> applyToEither
4753	+	(CompletionStage<? extends T> other,
4754	+	Function<? super T, U> fn) {
4755	+	return cf.applyToEither(other, fn); }
4756	+	public <U> CompletionStage<U> applyToEitherAsync
4757	+	(CompletionStage<? extends T> other,
4758	+	Function<? super T, U> fn) {
4759	+	return cf.applyToEitherAsync(other, fn); }
4760	+	public <U> CompletionStage<U> applyToEitherAsync
4761	+	(CompletionStage<? extends T> other,
4762	+	Function<? super T, U> fn,
4763	+	Executor executor) {
4764	+	return cf.applyToEitherAsync(other, fn, executor); }
4765	+	public CompletionStage<Void> acceptEither
4766	+	(CompletionStage<? extends T> other,
4767	+	Consumer<? super T> action) {
4768	+	return cf.acceptEither(other, action); }
4769	+	public CompletionStage<Void> acceptEitherAsync
4770	+	(CompletionStage<? extends T> other,
4771	+	Consumer<? super T> action) {
4772	+	return cf.acceptEitherAsync(other, action); }
4773	+	public CompletionStage<Void> acceptEitherAsync
4774	+	(CompletionStage<? extends T> other,
4775	+	Consumer<? super T> action,
4776	+	Executor executor) {
4777	+	return cf.acceptEitherAsync(other, action, executor); }
4778	+	public CompletionStage<Void> runAfterEither
4779	+	(CompletionStage<?> other,
4780	+	Runnable action) {
4781	+	return cf.runAfterEither(other, action); }
4782	+	public CompletionStage<Void> runAfterEitherAsync
4783	+	(CompletionStage<?> other,
4784	+	Runnable action) {
4785	+	return cf.runAfterEitherAsync(other, action); }
4786	+	public CompletionStage<Void> runAfterEitherAsync
4787	+	(CompletionStage<?> other,
4788	+	Runnable action,
4789	+	Executor executor) {
4790	+	return cf.runAfterEitherAsync(other, action, executor); }
4791	+	public <U> CompletionStage<U> thenCompose
4792	+	(Function<? super T, ? extends CompletionStage<U>> fn) {
4793	+	return cf.thenCompose(fn); }
4794	+	public <U> CompletionStage<U> thenComposeAsync
4795	+	(Function<? super T, ? extends CompletionStage<U>> fn) {
4796	+	return cf.thenComposeAsync(fn); }
4797	+	public <U> CompletionStage<U> thenComposeAsync
4798	+	(Function<? super T, ? extends CompletionStage<U>> fn,
4799	+	Executor executor) {
4800	+	return cf.thenComposeAsync(fn, executor); }
4801	+	public <U> CompletionStage<U> handle
4802	+	(BiFunction<? super T, Throwable, ? extends U> fn) {
4803	+	return cf.handle(fn); }
4804	+	public <U> CompletionStage<U> handleAsync
4805	+	(BiFunction<? super T, Throwable, ? extends U> fn) {
4806	+	return cf.handleAsync(fn); }
4807	+	public <U> CompletionStage<U> handleAsync
4808	+	(BiFunction<? super T, Throwable, ? extends U> fn,
4809	+	Executor executor) {
4810	+	return cf.handleAsync(fn, executor); }
4811	+	public CompletionStage<T> whenComplete
4812	+	(BiConsumer<? super T, ? super Throwable> action) {
4813	+	return cf.whenComplete(action); }
4814	+	public CompletionStage<T> whenCompleteAsync
4815	+	(BiConsumer<? super T, ? super Throwable> action) {
4816	+	return cf.whenCompleteAsync(action); }
4817	+	public CompletionStage<T> whenCompleteAsync
4818	+	(BiConsumer<? super T, ? super Throwable> action,
4819	+	Executor executor) {
4820	+	return cf.whenCompleteAsync(action, executor); }
4821	+	public CompletionStage<T> exceptionally
4822	+	(Function<Throwable, ? extends T> fn) {
4823	+	return cf.exceptionally(fn); }
4824	+	}
4825	+
4826	+	/**
4827	+	* default-implemented exceptionallyAsync action is not invoked when
4828	+	* source completes normally, and source result is propagated
4829	+	*/
4830	+	public void testDefaultExceptionallyAsync_normalCompletion() {
4831	+	for (boolean createIncomplete : new boolean[] { true, false })
4832	+	for (Integer v1 : new Integer[] { 1, null })
4833	+	{
4834	+	final AtomicInteger ran = new AtomicInteger(0);
4835	+	final CompletableFuture<Integer> f = new CompletableFuture<>();
4836	+	final DelegatedCompletionStage<Integer> d =
4837	+	new DelegatedCompletionStage<Integer>(f);
4838	+	if (!createIncomplete) assertTrue(f.complete(v1));
4839	+	final CompletionStage<Integer> g = d.exceptionallyAsync
4840	+	((Throwable t) -> {
4841	+	ran.getAndIncrement();
4842	+	throw new AssertionError("should not be called");
4843	+	});
4844	+	if (createIncomplete) assertTrue(f.complete(v1));
4845	+
4846	+	checkCompletedNormally(g.toCompletableFuture(), v1);
4847	+	checkCompletedNormally(f, v1);
4848	+	assertEquals(0, ran.get());
4849	+	}}
4850	+
4851	+	/**
4852	+	* default-implemented exceptionallyAsync action completes with
4853	+	* function value on source exception
4854	+	*/
4855	+	public void testDefaultExceptionallyAsync_exceptionalCompletion() {
4856	+	for (boolean createIncomplete : new boolean[] { true, false })
4857	+	for (Integer v1 : new Integer[] { 1, null })
4858	+	{
4859	+	final AtomicInteger ran = new AtomicInteger(0);
4860	+	final CFException ex = new CFException();
4861	+	final CompletableFuture<Integer> f = new CompletableFuture<>();
4862	+	final DelegatedCompletionStage<Integer> d =
4863	+	new DelegatedCompletionStage<Integer>(f);
4864	+	if (!createIncomplete) f.completeExceptionally(ex);
4865	+	final CompletionStage<Integer> g = d.exceptionallyAsync
4866	+	((Throwable t) -> {
4867	+	assertSame(t, ex);
4868	+	ran.getAndIncrement();
4869	+	return v1;
4870	+	});
4871	+	if (createIncomplete) f.completeExceptionally(ex);
4872	+
4873	+	checkCompletedNormally(g.toCompletableFuture(), v1);
4874	+	checkCompletedExceptionally(f, ex);
4875	+	assertEquals(1, ran.get());
4876	+	}}
4877	+
4878	+	/**
4879	+	* Under default implementation, if an "exceptionally action"
4880	+	* throws an exception, it completes exceptionally with that
4881	+	* exception
4882	+	*/
4883	+	public void testDefaultExceptionallyAsync_exceptionalCompletionActionFailed() {
4884	+	for (boolean createIncomplete : new boolean[] { true, false })
4885	+	{
4886	+	final AtomicInteger ran = new AtomicInteger(0);
4887	+	final CFException ex1 = new CFException();
4888	+	final CFException ex2 = new CFException();
4889	+	final CompletableFuture<Integer> f = new CompletableFuture<>();
4890	+	final DelegatedCompletionStage<Integer> d =
4891	+	new DelegatedCompletionStage<Integer>(f);
4892	+	if (!createIncomplete) f.completeExceptionally(ex1);
4893	+	final CompletionStage<Integer> g = d.exceptionallyAsync
4894	+	((Throwable t) -> {
4895	+	assertSame(t, ex1);
4896	+	ran.getAndIncrement();
4897	+	throw ex2;
4898	+	});
4899	+	if (createIncomplete) f.completeExceptionally(ex1);
4900	+
4901	+	checkCompletedWithWrappedException(g.toCompletableFuture(), ex2);
4902	+	checkCompletedExceptionally(f, ex1);
4903	+	checkCompletedExceptionally(d.toCompletableFuture(), ex1);
4904	+	assertEquals(1, ran.get());
4905	+	}}
4906	+
4907	+	/**
4908	+	* default-implemented exceptionallyCompose result completes
4909	+	* normally after normal completion of source
4910	+	*/
4911	+	public void testDefaultExceptionallyCompose_normalCompletion() {
4912	+	for (boolean createIncomplete : new boolean[] { true, false })
4913	+	for (Integer v1 : new Integer[] { 1, null })
4914	+	{
4915	+	final CompletableFuture<Integer> f = new CompletableFuture<>();
4916	+	final ExceptionalCompletableFutureFunction r =
4917	+	new ExceptionalCompletableFutureFunction(ExecutionMode.SYNC);
4918	+	final DelegatedCompletionStage<Integer> d =
4919	+	new DelegatedCompletionStage<Integer>(f);
4920	+	if (!createIncomplete) assertTrue(f.complete(v1));
4921	+	final CompletionStage<Integer> g = d.exceptionallyCompose(r);
4922	+	if (createIncomplete) assertTrue(f.complete(v1));
4923	+
4924	+	checkCompletedNormally(f, v1);
4925	+	checkCompletedNormally(g.toCompletableFuture(), v1);
4926	+	r.assertNotInvoked();
4927	+	}}
4928	+
4929	+	/**
4930	+	* default-implemented exceptionallyCompose result completes
4931	+	* normally after exceptional completion of source
4932	+	*/
4933	+	public void testDefaultExceptionallyCompose_exceptionalCompletion() {
4934	+	for (boolean createIncomplete : new boolean[] { true, false })
4935	+	{
4936	+	final CFException ex = new CFException();
4937	+	final ExceptionalCompletableFutureFunction r =
4938	+	new ExceptionalCompletableFutureFunction(ExecutionMode.SYNC);
4939	+	final CompletableFuture<Integer> f = new CompletableFuture<>();
4940	+	final DelegatedCompletionStage<Integer> d =
4941	+	new DelegatedCompletionStage<Integer>(f);
4942	+	if (!createIncomplete) f.completeExceptionally(ex);
4943	+	final CompletionStage<Integer> g = d.exceptionallyCompose(r);
4944	+	if (createIncomplete) f.completeExceptionally(ex);
4945	+
4946	+	checkCompletedExceptionally(f, ex);
4947	+	checkCompletedNormally(g.toCompletableFuture(), r.value);
4948	+	r.assertInvoked();
4949	+	}}
4950	+
4951	+	/**
4952	+	* default-implemented exceptionallyCompose completes
4953	+	* exceptionally on exception if action does
4954	+	*/
4955	+	public void testDefaultExceptionallyCompose_actionFailed() {
4956	+	for (boolean createIncomplete : new boolean[] { true, false })
4957	+	{
4958	+	final CFException ex = new CFException();
4959	+	final CompletableFuture<Integer> f = new CompletableFuture<>();
4960	+	final FailingExceptionalCompletableFutureFunction r
4961	+	= new FailingExceptionalCompletableFutureFunction(ExecutionMode.SYNC);
4962	+	final DelegatedCompletionStage<Integer> d =
4963	+	new DelegatedCompletionStage<Integer>(f);
4964	+	if (!createIncomplete) f.completeExceptionally(ex);
4965	+	final CompletionStage<Integer> g = d.exceptionallyCompose(r);
4966	+	if (createIncomplete) f.completeExceptionally(ex);
4967	+
4968	+	checkCompletedExceptionally(f, ex);
4969	+	checkCompletedWithWrappedException(g.toCompletableFuture(), r.ex);
4970	+	r.assertInvoked();
4971	+	}}
4972	+
4973	+	/**
4974	+	* default-implemented exceptionallyComposeAsync result completes
4975	+	* normally after normal completion of source
4976	+	*/
4977	+	public void testDefaultExceptionallyComposeAsync_normalCompletion() {
4978	+	for (boolean createIncomplete : new boolean[] { true, false })
4979	+	for (Integer v1 : new Integer[] { 1, null })
4980	+	{
4981	+	final CompletableFuture<Integer> f = new CompletableFuture<>();
4982	+	final ExceptionalCompletableFutureFunction r =
4983	+	new ExceptionalCompletableFutureFunction(ExecutionMode.ASYNC);
4984	+	final DelegatedCompletionStage<Integer> d =
4985	+	new DelegatedCompletionStage<Integer>(f);
4986	+	if (!createIncomplete) assertTrue(f.complete(v1));
4987	+	final CompletionStage<Integer> g = d.exceptionallyComposeAsync(r);
4988	+	if (createIncomplete) assertTrue(f.complete(v1));
4989	+
4990	+	checkCompletedNormally(f, v1);
4991	+	checkCompletedNormally(g.toCompletableFuture(), v1);
4992	+	r.assertNotInvoked();
4993	+	}}
4994	+
4995	+	/**
4996	+	* default-implemented exceptionallyComposeAsync result completes
4997	+	* normally after exceptional completion of source
4998	+	*/
4999	+	public void testDefaultExceptionallyComposeAsync_exceptionalCompletion() {
5000	+	for (boolean createIncomplete : new boolean[] { true, false })
5001	+	{
5002	+	final CFException ex = new CFException();
5003	+	final ExceptionalCompletableFutureFunction r =
5004	+	new ExceptionalCompletableFutureFunction(ExecutionMode.ASYNC);
5005	+	final CompletableFuture<Integer> f = new CompletableFuture<>();
5006	+	final DelegatedCompletionStage<Integer> d =
5007	+	new DelegatedCompletionStage<Integer>(f);
5008	+	if (!createIncomplete) f.completeExceptionally(ex);
5009	+	final CompletionStage<Integer> g = d.exceptionallyComposeAsync(r);
5010	+	if (createIncomplete) f.completeExceptionally(ex);
5011	+
5012	+	checkCompletedExceptionally(f, ex);
5013	+	checkCompletedNormally(g.toCompletableFuture(), r.value);
5014	+	r.assertInvoked();
5015	+	}}
5016	+
5017	+	/**
5018	+	* default-implemented exceptionallyComposeAsync completes
5019	+	* exceptionally on exception if action does
5020	+	*/
5021	+	public void testDefaultExceptionallyComposeAsync_actionFailed() {
5022	+	for (boolean createIncomplete : new boolean[] { true, false })
5023	+	{
5024	+	final CFException ex = new CFException();
5025	+	final CompletableFuture<Integer> f = new CompletableFuture<>();
5026	+	final FailingExceptionalCompletableFutureFunction r
5027	+	= new FailingExceptionalCompletableFutureFunction(ExecutionMode.ASYNC);
5028	+	final DelegatedCompletionStage<Integer> d =
5029	+	new DelegatedCompletionStage<Integer>(f);
5030	+	if (!createIncomplete) f.completeExceptionally(ex);
5031	+	final CompletionStage<Integer> g = d.exceptionallyComposeAsync(r);
5032	+	if (createIncomplete) f.completeExceptionally(ex);
5033	+
5034	+	checkCompletedExceptionally(f, ex);
5035	+	checkCompletedWithWrappedException(g.toCompletableFuture(), r.ex);
5036	+	r.assertInvoked();
5037	+	}}
5038	+
5039	+	/**
5040	+	* default-implemented exceptionallyComposeAsync result completes
5041	+	* normally after normal completion of source
5042	+	*/
5043	+	public void testDefaultExceptionallyComposeAsyncExecutor_normalCompletion() {
5044	+	for (boolean createIncomplete : new boolean[] { true, false })
5045	+	for (Integer v1 : new Integer[] { 1, null })
5046	+	{
5047	+	final CompletableFuture<Integer> f = new CompletableFuture<>();
5048	+	final ExceptionalCompletableFutureFunction r =
5049	+	new ExceptionalCompletableFutureFunction(ExecutionMode.EXECUTOR);
5050	+	final DelegatedCompletionStage<Integer> d =
5051	+	new DelegatedCompletionStage<Integer>(f);
5052	+	if (!createIncomplete) assertTrue(f.complete(v1));
5053	+	final CompletionStage<Integer> g = d.exceptionallyComposeAsync(r, new ThreadExecutor());
5054	+	if (createIncomplete) assertTrue(f.complete(v1));
5055	+
5056	+	checkCompletedNormally(f, v1);
5057	+	checkCompletedNormally(g.toCompletableFuture(), v1);
5058	+	r.assertNotInvoked();
5059	+	}}
5060	+
5061	+	/**
5062	+	* default-implemented exceptionallyComposeAsync result completes
5063	+	* normally after exceptional completion of source
5064	+	*/
5065	+	public void testDefaultExceptionallyComposeAsyncExecutor_exceptionalCompletion() {
5066	+	for (boolean createIncomplete : new boolean[] { true, false })
5067	+	{
5068	+	final CFException ex = new CFException();
5069	+	final ExceptionalCompletableFutureFunction r =
5070	+	new ExceptionalCompletableFutureFunction(ExecutionMode.EXECUTOR);
5071	+	final CompletableFuture<Integer> f = new CompletableFuture<>();
5072	+	final DelegatedCompletionStage<Integer> d =
5073	+	new DelegatedCompletionStage<Integer>(f);
5074	+	if (!createIncomplete) f.completeExceptionally(ex);
5075	+	final CompletionStage<Integer> g = d.exceptionallyComposeAsync(r, new ThreadExecutor());
5076	+	if (createIncomplete) f.completeExceptionally(ex);
5077	+
5078	+	checkCompletedExceptionally(f, ex);
5079	+	checkCompletedNormally(g.toCompletableFuture(), r.value);
5080	+	r.assertInvoked();
5081	+	}}
5082	+
5083	+	/**
5084	+	* default-implemented exceptionallyComposeAsync completes
5085	+	* exceptionally on exception if action does
5086	+	*/
5087	+	public void testDefaultExceptionallyComposeAsyncExecutor_actionFailed() {
5088	+	for (boolean createIncomplete : new boolean[] { true, false })
5089	+	{
5090	+	final CFException ex = new CFException();
5091	+	final CompletableFuture<Integer> f = new CompletableFuture<>();
5092	+	final FailingExceptionalCompletableFutureFunction r
5093	+	= new FailingExceptionalCompletableFutureFunction(ExecutionMode.EXECUTOR);
5094	+	final DelegatedCompletionStage<Integer> d =
5095	+	new DelegatedCompletionStage<Integer>(f);
5096	+	if (!createIncomplete) f.completeExceptionally(ex);
5097	+	final CompletionStage<Integer> g = d.exceptionallyComposeAsync(r, new ThreadExecutor());
5098	+	if (createIncomplete) f.completeExceptionally(ex);
5099	+
5100	+	checkCompletedExceptionally(f, ex);
5101	+	checkCompletedWithWrappedException(g.toCompletableFuture(), r.ex);
5102	+	r.assertInvoked();
5103	+	}}
5104	+
5105		}

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