ViewVC Help

View File | Revision Log | Show Annotations | Download File | Root Listing

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

Comparing jsr166/src/test/tck/CompletableFutureTest.java (file contents):
Revision 1.97 by jsr166, Wed Dec 31 16:44:01 2014 UTC vs.
Revision 1.207 by jsr166, Sun Sep 23 02:06:28 2018 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;
25		import java.util.concurrent.CancellationException;
12	–	import java.util.concurrent.ExecutionException;
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;
21	<	import static java.util.concurrent.TimeUnit.SECONDS;
22	<	import java.util.*;
23	<	import java.util.function.Supplier;
24	<	import java.util.function.Consumer;
36	>	import java.util.concurrent.atomic.AtomicReference;
37		import java.util.function.BiConsumer;
26	–	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 40 | 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	<	checkTimedGet(f, value);
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.join());
60	<	} catch (Throwable fail) { threadUnexpectedException(fail); }
61	<	try {
62	<	assertEquals(value, f.getNow(null));
63	<	} catch (Throwable fail) { threadUnexpectedException(fail); }
64	<	try {
65	<	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	<	long startTime = System.nanoTime();
97	<	long timeoutMillis = LONG_DELAY_MS;
98	<	try {
99	<	f.get(timeoutMillis, MILLISECONDS);
100	<	shouldThrow();
101	<	} catch (ExecutionException success) {
102	<	assertTrue(success.getCause() instanceof CFException);
103	<	} catch (Throwable fail) { threadUnexpectedException(fail); }
82	<	assertTrue(millisElapsedSince(startTime) < timeoutMillis/2);
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	<	try {
106	<	f.join();
107	<	shouldThrow();
108	<	} catch (CompletionException success) {
109	<	assertTrue(success.getCause() instanceof CFException);
110	<	}
111	<	try {
91	<	f.getNow(null);
92	<	shouldThrow();
93	<	} catch (CompletionException success) {
94	<	assertTrue(success.getCause() instanceof CFException);
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	<	try {
97	<	f.get();
98	<	shouldThrow();
99	<	} catch (ExecutionException success) {
100	<	assertTrue(success.getCause() instanceof CFException);
101	<	} catch (Throwable fail) { threadUnexpectedException(fail); }
102	<	assertTrue(f.isDone());
103	<	assertFalse(f.isCancelled());
104	<	assertTrue(f.toString().contains("[Completed exceptionally]"));
105	<	}
113	>	checker.accept(cause);
114
107	–	<U> void checkCompletedExceptionallyWithRootCause(CompletableFuture<U> f,
108	–	Throwable ex) {
115		long startTime = System.nanoTime();
110	–	long timeoutMillis = LONG_DELAY_MS;
116		try {
117	<	f.get(timeoutMillis, MILLISECONDS);
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) < timeoutMillis/2);
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
138	–	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);
146	<	try {
147	<	CompletableFuture<Throwable> spy = f.handle
148	<	((U u, Throwable t) -> t);
149	<	assertTrue(spy.join() instanceof CompletionException);
150	<	assertSame(ex, spy.join().getCause());
151	<	} 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();
165	–	long timeoutMillis = LONG_DELAY_MS;
177		try {
178	<	f.get(timeoutMillis, MILLISECONDS);
178	>	f.get(LONG_DELAY_MS, MILLISECONDS);
179		shouldThrow();
180		} catch (CancellationException success) {
181		} catch (Throwable fail) { threadUnexpectedException(fail); }
182	<	assertTrue(millisElapsedSince(startTime) < timeoutMillis/2);
182	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS / 2);
183
184		try {
185		f.join();
#	Line 183 | Line 194 | public class CompletableFutureTest exten
194		shouldThrow();
195		} catch (CancellationException success) {
196		} catch (Throwable fail) { threadUnexpectedException(fail); }
186	–	assertTrue(f.isDone());
187	–	assertTrue(f.isCompletedExceptionally());
188	–	assertTrue(f.isCancelled());
189	–	assertTrue(f.toString().contains("[Completed exceptionally]"));
190	–	}
197
198	<	void checkCompletedWithWrappedCancellationException(CompletableFuture<?> f) {
193	<	long startTime = System.nanoTime();
194	<	long timeoutMillis = LONG_DELAY_MS;
195	<	try {
196	<	f.get(timeoutMillis, MILLISECONDS);
197	<	shouldThrow();
198	<	} catch (ExecutionException success) {
199	<	assertTrue(success.getCause() instanceof CancellationException);
200	<	} catch (Throwable fail) { threadUnexpectedException(fail); }
201	<	assertTrue(millisElapsedSince(startTime) < timeoutMillis/2);
198	>	assertTrue(exceptionalCompletion(f) instanceof CancellationException);
199
203	–	try {
204	–	f.join();
205	–	shouldThrow();
206	–	} catch (CompletionException success) {
207	–	assertTrue(success.getCause() instanceof CancellationException);
208	–	}
209	–	try {
210	–	f.getNow(null);
211	–	shouldThrow();
212	–	} catch (CompletionException success) {
213	–	assertTrue(success.getCause() instanceof CancellationException);
214	–	}
215	–	try {
216	–	f.get();
217	–	shouldThrow();
218	–	} catch (ExecutionException success) {
219	–	assertTrue(success.getCause() instanceof CancellationException);
220	–	} catch (Throwable fail) { threadUnexpectedException(fail); }
200		assertTrue(f.isDone());
222	–	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 268 | 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 319 | 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 356 | 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 384 | 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 396 | 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 405 | 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 424 | 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 434 | 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 452 | 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 462 | 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 472 | 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	<
545	<	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<>();
553	<	assertTrue(f.complete(inc(x)));
554	<	return f;
554	>	return CompletableFuture.completedFuture(inc(x));
555		}
556		}
557
558	<	class FailingCompletableFutureFunction extends CheckedIntegerAction
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	>	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 660 | 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		},
664	–
704		ASYNC {
705		public void checkExecutionMode() {
706		assertEquals(defaultExecutorIsCommonPool,
#	Line 734 | 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 807 | 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 849 | 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 856 | 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		{
862	–	final AtomicInteger a = new AtomicInteger(0);
929		final CompletableFuture<Integer> f = new CompletableFuture<>();
930		if (!createIncomplete) assertTrue(f.complete(v1));
931	<	final CompletableFuture<Integer> g = f.exceptionally
932	<	((Throwable t) -> {
933	<	// Should not be called
934	<	a.getAndIncrement();
869	<	throw new AssertionError();
931	>	final CompletableFuture<Integer> g = m.exceptionally
932	>	(f, (Throwable t) -> {
933	>	threadFail("should not be called");
934	>	return null;            // unreached
935		});
936		if (createIncomplete) assertTrue(f.complete(v1));
937
938		checkCompletedNormally(g, v1);
939		checkCompletedNormally(f, v1);
875	–	assertEquals(0, a.get());
940		}}
941
942		/**
#	Line 880 | Line 944 | public class CompletableFutureTest exten
944		* exception
945		*/
946		public void testExceptionally_exceptionalCompletion() {
947	+	for (ExecutionMode m : ExecutionMode.values())
948		for (boolean createIncomplete : new boolean[] { true, false })
949		for (Integer v1 : new Integer[] { 1, null })
950		{
#	Line 887 | Line 952 | public class CompletableFutureTest exten
952		final CFException ex = new CFException();
953		final CompletableFuture<Integer> f = new CompletableFuture<>();
954		if (!createIncomplete) f.completeExceptionally(ex);
955	<	final CompletableFuture<Integer> g = f.exceptionally
956	<	((Throwable t) -> {
957	<	ExecutionMode.SYNC.checkExecutionMode();
955	>	final CompletableFuture<Integer> g = m.exceptionally
956	>	(f, (Throwable t) -> {
957	>	m.checkExecutionMode();
958		threadAssertSame(t, ex);
959		a.getAndIncrement();
960		return v1;
#	Line 900 | Line 965 | public class CompletableFutureTest exten
965		assertEquals(1, a.get());
966		}}
967
968	+	/**
969	+	* If an "exceptionally action" throws an exception, it completes
970	+	* exceptionally with that exception
971	+	*/
972		public void testExceptionally_exceptionalCompletionActionFailed() {
973	+	for (ExecutionMode m : ExecutionMode.values())
974		for (boolean createIncomplete : new boolean[] { true, false })
905	–	for (Integer v1 : new Integer[] { 1, null })
975		{
976		final AtomicInteger a = new AtomicInteger(0);
977		final CFException ex1 = new CFException();
978		final CFException ex2 = new CFException();
979		final CompletableFuture<Integer> f = new CompletableFuture<>();
980		if (!createIncomplete) f.completeExceptionally(ex1);
981	<	final CompletableFuture<Integer> g = f.exceptionally
982	<	((Throwable t) -> {
983	<	ExecutionMode.SYNC.checkExecutionMode();
981	>	final CompletableFuture<Integer> g = m.exceptionally
982	>	(f, (Throwable t) -> {
983	>	m.checkExecutionMode();
984		threadAssertSame(t, ex1);
985		a.getAndIncrement();
986		throw ex2;
#	Line 919 | Line 988 | public class CompletableFutureTest exten
988		if (createIncomplete) f.completeExceptionally(ex1);
989
990		checkCompletedWithWrappedException(g, ex2);
991	+	checkCompletedExceptionally(f, ex1);
992		assertEquals(1, a.get());
993		}}
994
#	Line 926 | Line 996 | public class CompletableFutureTest exten
996		* whenComplete action executes on normal completion, propagating
997		* source result.
998		*/
999	<	public void testWhenComplete_normalCompletion1() {
999	>	public void testWhenComplete_normalCompletion() {
1000		for (ExecutionMode m : ExecutionMode.values())
1001		for (boolean createIncomplete : new boolean[] { true, false })
1002		for (Integer v1 : new Integer[] { 1, null })
#	Line 936 | Line 1006 | public class CompletableFutureTest exten
1006		if (!createIncomplete) assertTrue(f.complete(v1));
1007		final CompletableFuture<Integer> g = m.whenComplete
1008		(f,
1009	<	(Integer x, Throwable t) -> {
1009	>	(Integer result, Throwable t) -> {
1010		m.checkExecutionMode();
1011	<	threadAssertSame(x, v1);
1011	>	threadAssertSame(result, v1);
1012		threadAssertNull(t);
1013		a.getAndIncrement();
1014		});
#	Line 956 | Line 1026 | public class CompletableFutureTest exten
1026		public void testWhenComplete_exceptionalCompletion() {
1027		for (ExecutionMode m : ExecutionMode.values())
1028		for (boolean createIncomplete : new boolean[] { true, false })
959	–	for (Integer v1 : new Integer[] { 1, null })
1029		{
1030		final AtomicInteger a = new AtomicInteger(0);
1031		final CFException ex = new CFException();
#	Line 964 | Line 1033 | public class CompletableFutureTest exten
1033		if (!createIncomplete) f.completeExceptionally(ex);
1034		final CompletableFuture<Integer> g = m.whenComplete
1035		(f,
1036	<	(Integer x, Throwable t) -> {
1036	>	(Integer result, Throwable t) -> {
1037		m.checkExecutionMode();
1038	<	threadAssertNull(x);
1038	>	threadAssertNull(result);
1039		threadAssertSame(t, ex);
1040		a.getAndIncrement();
1041		});
#	Line 991 | Line 1060 | public class CompletableFutureTest exten
1060		if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
1061		final CompletableFuture<Integer> g = m.whenComplete
1062		(f,
1063	<	(Integer x, Throwable t) -> {
1063	>	(Integer result, Throwable t) -> {
1064		m.checkExecutionMode();
1065	<	threadAssertNull(x);
1065	>	threadAssertNull(result);
1066		threadAssertTrue(t instanceof CancellationException);
1067		a.getAndIncrement();
1068		});
#	Line 1008 | Line 1077 | public class CompletableFutureTest exten
1077		* If a whenComplete action throws an exception when triggered by
1078		* a normal completion, it completes exceptionally
1079		*/
1080	<	public void testWhenComplete_actionFailed() {
1080	>	public void testWhenComplete_sourceCompletedNormallyActionFailed() {
1081		for (boolean createIncomplete : new boolean[] { true, false })
1082		for (ExecutionMode m : ExecutionMode.values())
1083		for (Integer v1 : new Integer[] { 1, null })
#	Line 1019 | Line 1088 | public class CompletableFutureTest exten
1088		if (!createIncomplete) assertTrue(f.complete(v1));
1089		final CompletableFuture<Integer> g = m.whenComplete
1090		(f,
1091	<	(Integer x, Throwable t) -> {
1091	>	(Integer result, Throwable t) -> {
1092		m.checkExecutionMode();
1093	<	threadAssertSame(x, v1);
1093	>	threadAssertSame(result, v1);
1094		threadAssertNull(t);
1095		a.getAndIncrement();
1096		throw ex;
#	Line 1036 | Line 1105 | public class CompletableFutureTest exten
1105		/**
1106		* If a whenComplete action throws an exception when triggered by
1107		* a source completion that also throws an exception, the source
1108	<	* exception takes precedence.
1108	>	* exception takes precedence (unlike handle)
1109		*/
1110	<	public void testWhenComplete_actionFailedSourceFailed() {
1110	>	public void testWhenComplete_sourceFailedActionFailed() {
1111		for (boolean createIncomplete : new boolean[] { true, false })
1112		for (ExecutionMode m : ExecutionMode.values())
1044	–	for (Integer v1 : new Integer[] { 1, null })
1113		{
1114		final AtomicInteger a = new AtomicInteger(0);
1115		final CFException ex1 = new CFException();
#	Line 1051 | Line 1119 | public class CompletableFutureTest exten
1119		if (!createIncomplete) f.completeExceptionally(ex1);
1120		final CompletableFuture<Integer> g = m.whenComplete
1121		(f,
1122	<	(Integer x, Throwable t) -> {
1122	>	(Integer result, Throwable t) -> {
1123		m.checkExecutionMode();
1124		threadAssertSame(t, ex1);
1125	<	threadAssertNull(x);
1125	>	threadAssertNull(result);
1126		a.getAndIncrement();
1127		throw ex2;
1128		});
#	Line 1062 | Line 1130 | public class CompletableFutureTest exten
1130
1131		checkCompletedWithWrappedException(g, ex1);
1132		checkCompletedExceptionally(f, ex1);
1133	+	if (testImplementationDetails) {
1134	+	assertEquals(1, ex1.getSuppressed().length);
1135	+	assertSame(ex2, ex1.getSuppressed()[0]);
1136	+	}
1137		assertEquals(1, a.get());
1138		}}
1139
#	Line 1079 | Line 1151 | public class CompletableFutureTest exten
1151		if (!createIncomplete) assertTrue(f.complete(v1));
1152		final CompletableFuture<Integer> g = m.handle
1153		(f,
1154	<	(Integer x, Throwable t) -> {
1154	>	(Integer result, Throwable t) -> {
1155		m.checkExecutionMode();
1156	<	threadAssertSame(x, v1);
1156	>	threadAssertSame(result, v1);
1157		threadAssertNull(t);
1158		a.getAndIncrement();
1159		return inc(v1);
#	Line 1108 | Line 1180 | public class CompletableFutureTest exten
1180		if (!createIncomplete) f.completeExceptionally(ex);
1181		final CompletableFuture<Integer> g = m.handle
1182		(f,
1183	<	(Integer x, Throwable t) -> {
1183	>	(Integer result, Throwable t) -> {
1184		m.checkExecutionMode();
1185	<	threadAssertNull(x);
1185	>	threadAssertNull(result);
1186		threadAssertSame(t, ex);
1187		a.getAndIncrement();
1188		return v1;
#	Line 1137 | Line 1209 | public class CompletableFutureTest exten
1209		if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
1210		final CompletableFuture<Integer> g = m.handle
1211		(f,
1212	<	(Integer x, Throwable t) -> {
1212	>	(Integer result, Throwable t) -> {
1213		m.checkExecutionMode();
1214	<	threadAssertNull(x);
1214	>	threadAssertNull(result);
1215		threadAssertTrue(t instanceof CancellationException);
1216		a.getAndIncrement();
1217		return v1;
#	Line 1152 | Line 1224 | public class CompletableFutureTest exten
1224		}}
1225
1226		/**
1227	<	* handle result completes exceptionally if action does
1227	>	* If a "handle action" throws an exception when triggered by
1228	>	* a normal completion, it completes exceptionally
1229		*/
1230	<	public void testHandle_sourceFailedActionFailed() {
1230	>	public void testHandle_sourceCompletedNormallyActionFailed() {
1231		for (ExecutionMode m : ExecutionMode.values())
1232		for (boolean createIncomplete : new boolean[] { true, false })
1233	+	for (Integer v1 : new Integer[] { 1, null })
1234		{
1235		final CompletableFuture<Integer> f = new CompletableFuture<>();
1236		final AtomicInteger a = new AtomicInteger(0);
1237	<	final CFException ex1 = new CFException();
1238	<	final CFException ex2 = new CFException();
1165	<	if (!createIncomplete) f.completeExceptionally(ex1);
1237	>	final CFException ex = new CFException();
1238	>	if (!createIncomplete) assertTrue(f.complete(v1));
1239		final CompletableFuture<Integer> g = m.handle
1240		(f,
1241	<	(Integer x, Throwable t) -> {
1241	>	(Integer result, Throwable t) -> {
1242		m.checkExecutionMode();
1243	<	threadAssertNull(x);
1244	<	threadAssertSame(ex1, t);
1243	>	threadAssertSame(result, v1);
1244	>	threadAssertNull(t);
1245		a.getAndIncrement();
1246	<	throw ex2;
1246	>	throw ex;
1247		});
1248	<	if (createIncomplete) f.completeExceptionally(ex1);
1248	>	if (createIncomplete) assertTrue(f.complete(v1));
1249
1250	<	checkCompletedWithWrappedException(g, ex2);
1251	<	checkCompletedExceptionally(f, ex1);
1250	>	checkCompletedWithWrappedException(g, ex);
1251	>	checkCompletedNormally(f, v1);
1252		assertEquals(1, a.get());
1253		}}
1254
1255	<	public void testHandle_sourceCompletedNormallyActionFailed() {
1256	<	for (ExecutionMode m : ExecutionMode.values())
1255	>	/**
1256	>	* If a "handle action" throws an exception when triggered by
1257	>	* a source completion that also throws an exception, the action
1258	>	* exception takes precedence (unlike whenComplete)
1259	>	*/
1260	>	public void testHandle_sourceFailedActionFailed() {
1261		for (boolean createIncomplete : new boolean[] { true, false })
1262	<	for (Integer v1 : new Integer[] { 1, null })
1262	>	for (ExecutionMode m : ExecutionMode.values())
1263		{
1187	–	final CompletableFuture<Integer> f = new CompletableFuture<>();
1264		final AtomicInteger a = new AtomicInteger(0);
1265	<	final CFException ex = new CFException();
1266	<	if (!createIncomplete) assertTrue(f.complete(v1));
1265	>	final CFException ex1 = new CFException();
1266	>	final CFException ex2 = new CFException();
1267	>	final CompletableFuture<Integer> f = new CompletableFuture<>();
1268	>
1269	>	if (!createIncomplete) f.completeExceptionally(ex1);
1270		final CompletableFuture<Integer> g = m.handle
1271		(f,
1272	<	(Integer x, Throwable t) -> {
1272	>	(Integer result, Throwable t) -> {
1273		m.checkExecutionMode();
1274	<	threadAssertSame(x, v1);
1275	<	threadAssertNull(t);
1274	>	threadAssertNull(result);
1275	>	threadAssertSame(ex1, t);
1276		a.getAndIncrement();
1277	<	throw ex;
1277	>	throw ex2;
1278		});
1279	<	if (createIncomplete) assertTrue(f.complete(v1));
1279	>	if (createIncomplete) f.completeExceptionally(ex1);
1280
1281	<	checkCompletedWithWrappedException(g, ex);
1282	<	checkCompletedNormally(f, v1);
1281	>	checkCompletedWithWrappedException(g, ex2);
1282	>	checkCompletedExceptionally(f, ex1);
1283		assertEquals(1, a.get());
1284		}}
1285
#	Line 1233 | Line 1312 | public class CompletableFutureTest exten
1312		{
1313		final FailingRunnable r = new FailingRunnable(m);
1314		final CompletableFuture<Void> f = m.runAsync(r);
1315	<	checkCompletedWithWrappedCFException(f);
1315	>	checkCompletedWithWrappedException(f, r.ex);
1316		r.assertInvoked();
1317		}}
1318
1319	+	@SuppressWarnings("FutureReturnValueIgnored")
1320	+	public void testRunAsync_rejectingExecutor() {
1321	+	CountingRejectingExecutor e = new CountingRejectingExecutor();
1322	+	try {
1323	+	CompletableFuture.runAsync(() -> {}, e);
1324	+	shouldThrow();
1325	+	} catch (Throwable t) {
1326	+	assertSame(e.ex, t);
1327	+	}
1328	+
1329	+	assertEquals(1, e.count.get());
1330	+	}
1331	+
1332		/**
1333		* supplyAsync completes with result of supplier
1334		*/
#	Line 1267 | Line 1359 | public class CompletableFutureTest exten
1359		{
1360		FailingSupplier r = new FailingSupplier(m);
1361		CompletableFuture<Integer> f = m.supplyAsync(r);
1362	<	checkCompletedWithWrappedCFException(f);
1362	>	checkCompletedWithWrappedException(f, r.ex);
1363		r.assertInvoked();
1364		}}
1365
1366	+	@SuppressWarnings("FutureReturnValueIgnored")
1367	+	public void testSupplyAsync_rejectingExecutor() {
1368	+	CountingRejectingExecutor e = new CountingRejectingExecutor();
1369	+	try {
1370	+	CompletableFuture.supplyAsync(() -> null, e);
1371	+	shouldThrow();
1372	+	} catch (Throwable t) {
1373	+	assertSame(e.ex, t);
1374	+	}
1375	+
1376	+	assertEquals(1, e.count.get());
1377	+	}
1378	+
1379		// seq completion methods
1380
1381		/**
#	Line 1389 | Line 1494 | public class CompletableFutureTest exten
1494		final CompletableFuture<Void> h4 = m.runAfterBoth(f, f, rs[4]);
1495		final CompletableFuture<Void> h5 = m.runAfterEither(f, f, rs[5]);
1496
1497	<	checkCompletedWithWrappedCFException(h0);
1498	<	checkCompletedWithWrappedCFException(h1);
1499	<	checkCompletedWithWrappedCFException(h2);
1500	<	checkCompletedWithWrappedCFException(h3);
1501	<	checkCompletedWithWrappedCFException(h4);
1502	<	checkCompletedWithWrappedCFException(h5);
1497	>	checkCompletedWithWrappedException(h0, rs[0].ex);
1498	>	checkCompletedWithWrappedException(h1, rs[1].ex);
1499	>	checkCompletedWithWrappedException(h2, rs[2].ex);
1500	>	checkCompletedWithWrappedException(h3, rs[3].ex);
1501	>	checkCompletedWithWrappedException(h4, rs[4].ex);
1502	>	checkCompletedWithWrappedException(h5, rs[5].ex);
1503		checkCompletedNormally(f, v1);
1504		}}
1505
#	Line 1493 | Line 1598 | public class CompletableFutureTest exten
1598		final CompletableFuture<Integer> h2 = m.thenApply(f, rs[2]);
1599		final CompletableFuture<Integer> h3 = m.applyToEither(f, f, rs[3]);
1600
1601	<	checkCompletedWithWrappedCFException(h0);
1602	<	checkCompletedWithWrappedCFException(h1);
1603	<	checkCompletedWithWrappedCFException(h2);
1604	<	checkCompletedWithWrappedCFException(h3);
1601	>	checkCompletedWithWrappedException(h0, rs[0].ex);
1602	>	checkCompletedWithWrappedException(h1, rs[1].ex);
1603	>	checkCompletedWithWrappedException(h2, rs[2].ex);
1604	>	checkCompletedWithWrappedException(h3, rs[3].ex);
1605		checkCompletedNormally(f, v1);
1606		}}
1607
#	Line 1595 | Line 1700 | public class CompletableFutureTest exten
1700		final CompletableFuture<Void> h2 = m.thenAccept(f, rs[2]);
1701		final CompletableFuture<Void> h3 = m.acceptEither(f, f, rs[3]);
1702
1703	<	checkCompletedWithWrappedCFException(h0);
1704	<	checkCompletedWithWrappedCFException(h1);
1705	<	checkCompletedWithWrappedCFException(h2);
1706	<	checkCompletedWithWrappedCFException(h3);
1703	>	checkCompletedWithWrappedException(h0, rs[0].ex);
1704	>	checkCompletedWithWrappedException(h1, rs[1].ex);
1705	>	checkCompletedWithWrappedException(h2, rs[2].ex);
1706	>	checkCompletedWithWrappedException(h3, rs[3].ex);
1707		checkCompletedNormally(f, v1);
1708		}}
1709
#	Line 1760 | Line 1865 | public class CompletableFutureTest exten
1865		assertTrue(snd.complete(w2));
1866		final CompletableFuture<Integer> h3 = m.thenCombine(f, g, r3);
1867
1868	<	checkCompletedWithWrappedCFException(h1);
1869	<	checkCompletedWithWrappedCFException(h2);
1870	<	checkCompletedWithWrappedCFException(h3);
1868	>	checkCompletedWithWrappedException(h1, r1.ex);
1869	>	checkCompletedWithWrappedException(h2, r2.ex);
1870	>	checkCompletedWithWrappedException(h3, r3.ex);
1871		r1.assertInvoked();
1872		r2.assertInvoked();
1873		r3.assertInvoked();
#	Line 1924 | Line 2029 | public class CompletableFutureTest exten
2029		assertTrue(snd.complete(w2));
2030		final CompletableFuture<Void> h3 = m.thenAcceptBoth(f, g, r3);
2031
2032	<	checkCompletedWithWrappedCFException(h1);
2033	<	checkCompletedWithWrappedCFException(h2);
2034	<	checkCompletedWithWrappedCFException(h3);
2032	>	checkCompletedWithWrappedException(h1, r1.ex);
2033	>	checkCompletedWithWrappedException(h2, r2.ex);
2034	>	checkCompletedWithWrappedException(h3, r3.ex);
2035		r1.assertInvoked();
2036		r2.assertInvoked();
2037		r3.assertInvoked();
#	Line 2088 | Line 2193 | public class CompletableFutureTest exten
2193		assertTrue(snd.complete(w2));
2194		final CompletableFuture<Void> h3 = m.runAfterBoth(f, g, r3);
2195
2196	<	checkCompletedWithWrappedCFException(h1);
2197	<	checkCompletedWithWrappedCFException(h2);
2198	<	checkCompletedWithWrappedCFException(h3);
2196	>	checkCompletedWithWrappedException(h1, r1.ex);
2197	>	checkCompletedWithWrappedException(h2, r2.ex);
2198	>	checkCompletedWithWrappedException(h3, r3.ex);
2199		r1.assertInvoked();
2200		r2.assertInvoked();
2201		r3.assertInvoked();
#	Line 2380 | Line 2485 | public class CompletableFutureTest exten
2485		f.complete(v1);
2486		final CompletableFuture<Integer> h2 = m.applyToEither(f, g, rs[2]);
2487		final CompletableFuture<Integer> h3 = m.applyToEither(g, f, rs[3]);
2488	<	checkCompletedWithWrappedCFException(h0);
2489	<	checkCompletedWithWrappedCFException(h1);
2490	<	checkCompletedWithWrappedCFException(h2);
2491	<	checkCompletedWithWrappedCFException(h3);
2488	>	checkCompletedWithWrappedException(h0, rs[0].ex);
2489	>	checkCompletedWithWrappedException(h1, rs[1].ex);
2490	>	checkCompletedWithWrappedException(h2, rs[2].ex);
2491	>	checkCompletedWithWrappedException(h3, rs[3].ex);
2492		for (int i = 0; i < 4; i++) rs[i].assertValue(v1);
2493
2494		g.complete(v2);
#	Line 2392 | Line 2497 | public class CompletableFutureTest exten
2497		final CompletableFuture<Integer> h4 = m.applyToEither(f, g, rs[4]);
2498		final CompletableFuture<Integer> h5 = m.applyToEither(g, f, rs[5]);
2499
2500	<	checkCompletedWithWrappedCFException(h4);
2500	>	checkCompletedWithWrappedException(h4, rs[4].ex);
2501		assertTrue(Objects.equals(v1, rs[4].value) ||
2502		Objects.equals(v2, rs[4].value));
2503	<	checkCompletedWithWrappedCFException(h5);
2503	>	checkCompletedWithWrappedException(h5, rs[5].ex);
2504		assertTrue(Objects.equals(v1, rs[5].value) ||
2505		Objects.equals(v2, rs[5].value));
2506
#	Line 2533 | Line 2638 | public class CompletableFutureTest exten
2638
2639		// unspecified behavior - both source completions available
2640		try {
2641	<	assertEquals(null, h0.join());
2641	>	assertNull(h0.join());
2642		rs[0].assertValue(v1);
2643		} catch (CompletionException ok) {
2644		checkCompletedWithWrappedException(h0, ex);
2645		rs[0].assertNotInvoked();
2646		}
2647		try {
2648	<	assertEquals(null, h1.join());
2648	>	assertNull(h1.join());
2649		rs[1].assertValue(v1);
2650		} catch (CompletionException ok) {
2651		checkCompletedWithWrappedException(h1, ex);
2652		rs[1].assertNotInvoked();
2653		}
2654		try {
2655	<	assertEquals(null, h2.join());
2655	>	assertNull(h2.join());
2656		rs[2].assertValue(v1);
2657		} catch (CompletionException ok) {
2658		checkCompletedWithWrappedException(h2, ex);
2659		rs[2].assertNotInvoked();
2660		}
2661		try {
2662	<	assertEquals(null, h3.join());
2662	>	assertNull(h3.join());
2663		rs[3].assertValue(v1);
2664		} catch (CompletionException ok) {
2665		checkCompletedWithWrappedException(h3, ex);
#	Line 2639 | Line 2744 | public class CompletableFutureTest exten
2744		f.complete(v1);
2745		final CompletableFuture<Void> h2 = m.acceptEither(f, g, rs[2]);
2746		final CompletableFuture<Void> h3 = m.acceptEither(g, f, rs[3]);
2747	<	checkCompletedWithWrappedCFException(h0);
2748	<	checkCompletedWithWrappedCFException(h1);
2749	<	checkCompletedWithWrappedCFException(h2);
2750	<	checkCompletedWithWrappedCFException(h3);
2747	>	checkCompletedWithWrappedException(h0, rs[0].ex);
2748	>	checkCompletedWithWrappedException(h1, rs[1].ex);
2749	>	checkCompletedWithWrappedException(h2, rs[2].ex);
2750	>	checkCompletedWithWrappedException(h3, rs[3].ex);
2751		for (int i = 0; i < 4; i++) rs[i].assertValue(v1);
2752
2753		g.complete(v2);
#	Line 2651 | Line 2756 | public class CompletableFutureTest exten
2756		final CompletableFuture<Void> h4 = m.acceptEither(f, g, rs[4]);
2757		final CompletableFuture<Void> h5 = m.acceptEither(g, f, rs[5]);
2758
2759	<	checkCompletedWithWrappedCFException(h4);
2759	>	checkCompletedWithWrappedException(h4, rs[4].ex);
2760		assertTrue(Objects.equals(v1, rs[4].value) ||
2761		Objects.equals(v2, rs[4].value));
2762	<	checkCompletedWithWrappedCFException(h5);
2762	>	checkCompletedWithWrappedException(h5, rs[5].ex);
2763		assertTrue(Objects.equals(v1, rs[5].value) ||
2764		Objects.equals(v2, rs[5].value));
2765
#	Line 2670 | Line 2775 | public class CompletableFutureTest exten
2775		for (ExecutionMode m : ExecutionMode.values())
2776		for (Integer v1 : new Integer[] { 1, null })
2777		for (Integer v2 : new Integer[] { 2, null })
2778	+	for (boolean pushNop : new boolean[] { true, false })
2779		{
2780		final CompletableFuture<Integer> f = new CompletableFuture<>();
2781		final CompletableFuture<Integer> g = new CompletableFuture<>();
#	Line 2682 | Line 2788 | public class CompletableFutureTest exten
2788		checkIncomplete(h1);
2789		rs[0].assertNotInvoked();
2790		rs[1].assertNotInvoked();
2791	+	if (pushNop) {          // ad hoc test of intra-completion interference
2792	+	m.thenRun(f, () -> {});
2793	+	m.thenRun(g, () -> {});
2794	+	}
2795		f.complete(v1);
2796		checkCompletedNormally(h0, null);
2797		checkCompletedNormally(h1, null);
#	Line 2788 | Line 2898 | public class CompletableFutureTest exten
2898
2899		// unspecified behavior - both source completions available
2900		try {
2901	<	assertEquals(null, h0.join());
2901	>	assertNull(h0.join());
2902		rs[0].assertInvoked();
2903		} catch (CompletionException ok) {
2904		checkCompletedWithWrappedException(h0, ex);
2905		rs[0].assertNotInvoked();
2906		}
2907		try {
2908	<	assertEquals(null, h1.join());
2908	>	assertNull(h1.join());
2909		rs[1].assertInvoked();
2910		} catch (CompletionException ok) {
2911		checkCompletedWithWrappedException(h1, ex);
2912		rs[1].assertNotInvoked();
2913		}
2914		try {
2915	<	assertEquals(null, h2.join());
2915	>	assertNull(h2.join());
2916		rs[2].assertInvoked();
2917		} catch (CompletionException ok) {
2918		checkCompletedWithWrappedException(h2, ex);
2919		rs[2].assertNotInvoked();
2920		}
2921		try {
2922	<	assertEquals(null, h3.join());
2922	>	assertNull(h3.join());
2923		rs[3].assertInvoked();
2924		} catch (CompletionException ok) {
2925		checkCompletedWithWrappedException(h3, ex);
#	Line 2894 | Line 3004 | public class CompletableFutureTest exten
3004		assertTrue(f.complete(v1));
3005		final CompletableFuture<Void> h2 = m.runAfterEither(f, g, rs[2]);
3006		final CompletableFuture<Void> h3 = m.runAfterEither(g, f, rs[3]);
3007	<	checkCompletedWithWrappedCFException(h0);
3008	<	checkCompletedWithWrappedCFException(h1);
3009	<	checkCompletedWithWrappedCFException(h2);
3010	<	checkCompletedWithWrappedCFException(h3);
3007	>	checkCompletedWithWrappedException(h0, rs[0].ex);
3008	>	checkCompletedWithWrappedException(h1, rs[1].ex);
3009	>	checkCompletedWithWrappedException(h2, rs[2].ex);
3010	>	checkCompletedWithWrappedException(h3, rs[3].ex);
3011		for (int i = 0; i < 4; i++) rs[i].assertInvoked();
3012		assertTrue(g.complete(v2));
3013		final CompletableFuture<Void> h4 = m.runAfterEither(f, g, rs[4]);
3014		final CompletableFuture<Void> h5 = m.runAfterEither(g, f, rs[5]);
3015	<	checkCompletedWithWrappedCFException(h4);
3016	<	checkCompletedWithWrappedCFException(h5);
3015	>	checkCompletedWithWrappedException(h4, rs[4].ex);
3016	>	checkCompletedWithWrappedException(h5, rs[5].ex);
3017
3018		checkCompletedNormally(f, v1);
3019		checkCompletedNormally(g, v2);
#	Line 2964 | Line 3074 | public class CompletableFutureTest exten
3074		final CompletableFuture<Integer> g = m.thenCompose(f, r);
3075		if (createIncomplete) assertTrue(f.complete(v1));
3076
3077	<	checkCompletedWithWrappedCFException(g);
3077	>	checkCompletedWithWrappedException(g, r.ex);
3078		checkCompletedNormally(f, v1);
3079		}}
3080
#	Line 2989 | Line 3099 | public class CompletableFutureTest exten
3099		checkCancelled(f);
3100		}}
3101
3102	+	/**
3103	+	* thenCompose result completes exceptionally if the result of the action does
3104	+	*/
3105	+	public void testThenCompose_actionReturnsFailingFuture() {
3106	+	for (ExecutionMode m : ExecutionMode.values())
3107	+	for (int order = 0; order < 6; order++)
3108	+	for (Integer v1 : new Integer[] { 1, null })
3109	+	{
3110	+	final CFException ex = new CFException();
3111	+	final CompletableFuture<Integer> f = new CompletableFuture<>();
3112	+	final CompletableFuture<Integer> g = new CompletableFuture<>();
3113	+	final CompletableFuture<Integer> h;
3114	+	// Test all permutations of orders
3115	+	switch (order) {
3116	+	case 0:
3117	+	assertTrue(f.complete(v1));
3118	+	assertTrue(g.completeExceptionally(ex));
3119	+	h = m.thenCompose(f, (x -> g));
3120	+	break;
3121	+	case 1:
3122	+	assertTrue(f.complete(v1));
3123	+	h = m.thenCompose(f, (x -> g));
3124	+	assertTrue(g.completeExceptionally(ex));
3125	+	break;
3126	+	case 2:
3127	+	assertTrue(g.completeExceptionally(ex));
3128	+	assertTrue(f.complete(v1));
3129	+	h = m.thenCompose(f, (x -> g));
3130	+	break;
3131	+	case 3:
3132	+	assertTrue(g.completeExceptionally(ex));
3133	+	h = m.thenCompose(f, (x -> g));
3134	+	assertTrue(f.complete(v1));
3135	+	break;
3136	+	case 4:
3137	+	h = m.thenCompose(f, (x -> g));
3138	+	assertTrue(f.complete(v1));
3139	+	assertTrue(g.completeExceptionally(ex));
3140	+	break;
3141	+	case 5:
3142	+	h = m.thenCompose(f, (x -> g));
3143	+	assertTrue(f.complete(v1));
3144	+	assertTrue(g.completeExceptionally(ex));
3145	+	break;
3146	+	default: throw new AssertionError();
3147	+	}
3148	+
3149	+	checkCompletedExceptionally(g, ex);
3150	+	checkCompletedWithWrappedException(h, ex);
3151	+	checkCompletedNormally(f, v1);
3152	+	}}
3153	+
3154	+	/**
3155	+	* exceptionallyCompose result completes normally after normal
3156	+	* completion of source
3157	+	*/
3158	+	public void testExceptionallyCompose_normalCompletion() {
3159	+	for (ExecutionMode m : ExecutionMode.values())
3160	+	for (boolean createIncomplete : new boolean[] { true, false })
3161	+	for (Integer v1 : new Integer[] { 1, null })
3162	+	{
3163	+	final CompletableFuture<Integer> f = new CompletableFuture<>();
3164	+	final ExceptionalCompletableFutureFunction r =
3165	+	new ExceptionalCompletableFutureFunction(m);
3166	+	if (!createIncomplete) assertTrue(f.complete(v1));
3167	+	final CompletableFuture<Integer> g = m.exceptionallyCompose(f, r);
3168	+	if (createIncomplete) assertTrue(f.complete(v1));
3169	+
3170	+	checkCompletedNormally(f, v1);
3171	+	checkCompletedNormally(g, v1);
3172	+	r.assertNotInvoked();
3173	+	}}
3174	+
3175	+	/**
3176	+	* exceptionallyCompose result completes normally after exceptional
3177	+	* completion of source
3178	+	*/
3179	+	public void testExceptionallyCompose_exceptionalCompletion() {
3180	+	for (ExecutionMode m : ExecutionMode.values())
3181	+	for (boolean createIncomplete : new boolean[] { true, false })
3182	+	{
3183	+	final CFException ex = new CFException();
3184	+	final ExceptionalCompletableFutureFunction r =
3185	+	new ExceptionalCompletableFutureFunction(m);
3186	+	final CompletableFuture<Integer> f = new CompletableFuture<>();
3187	+	if (!createIncomplete) f.completeExceptionally(ex);
3188	+	final CompletableFuture<Integer> g = m.exceptionallyCompose(f, r);
3189	+	if (createIncomplete) f.completeExceptionally(ex);
3190	+
3191	+	checkCompletedExceptionally(f, ex);
3192	+	checkCompletedNormally(g, r.value);
3193	+	r.assertInvoked();
3194	+	}}
3195	+
3196	+	/**
3197	+	* exceptionallyCompose completes exceptionally on exception if action does
3198	+	*/
3199	+	public void testExceptionallyCompose_actionFailed() {
3200	+	for (ExecutionMode m : ExecutionMode.values())
3201	+	for (boolean createIncomplete : new boolean[] { true, false })
3202	+	for (Integer v1 : new Integer[] { 1, null })
3203	+	{
3204	+	final CFException ex = new CFException();
3205	+	final CompletableFuture<Integer> f = new CompletableFuture<>();
3206	+	final FailingExceptionalCompletableFutureFunction r
3207	+	= new FailingExceptionalCompletableFutureFunction(m);
3208	+	if (!createIncomplete) f.completeExceptionally(ex);
3209	+	final CompletableFuture<Integer> g = m.exceptionallyCompose(f, r);
3210	+	if (createIncomplete) f.completeExceptionally(ex);
3211	+
3212	+	checkCompletedExceptionally(f, ex);
3213	+	checkCompletedWithWrappedException(g, r.ex);
3214	+	r.assertInvoked();
3215	+	}}
3216	+
3217	+
3218		// other static methods
3219
3220		/**
#	Line 3021 | Line 3247 | public class CompletableFutureTest exten
3247		}
3248		}
3249
3250	<	public void testAllOf_backwards() throws Exception {
3250	>	public void testAllOf_normal_backwards() throws Exception {
3251		for (int k = 1; k < 10; k++) {
3252		CompletableFuture<Integer>[] fs
3253		= (CompletableFuture<Integer>[]) new CompletableFuture[k];
#	Line 3049 | Line 3275 | public class CompletableFutureTest exten
3275		for (int i = 0; i < k; i++) {
3276		checkIncomplete(f);
3277		checkIncomplete(CompletableFuture.allOf(fs));
3278	<	if (i != k/2) {
3278	>	if (i != k / 2) {
3279		fs[i].complete(i);
3280		checkCompletedNormally(fs[i], i);
3281		} else {
#	Line 3152 | Line 3378 | public class CompletableFutureTest exten
3378		/**
3379		* Completion methods throw NullPointerException with null arguments
3380		*/
3381	+	@SuppressWarnings("FutureReturnValueIgnored")
3382		public void testNPE() {
3383		CompletableFuture<Integer> f = new CompletableFuture<>();
3384		CompletableFuture<Integer> g = new CompletableFuture<>();
3385		CompletableFuture<Integer> nullFuture = (CompletableFuture<Integer>)null;
3159	–	CompletableFuture<?> h;
3386		ThreadExecutor exec = new ThreadExecutor();
3387
3388		Runnable[] throwingActions = {
#	Line 3172 | Line 3398 | public class CompletableFutureTest exten
3398
3399		() -> f.thenApply(null),
3400		() -> f.thenApplyAsync(null),
3401	<	() -> f.thenApplyAsync((x) -> x, null),
3401	>	() -> f.thenApplyAsync(x -> x, null),
3402		() -> f.thenApplyAsync(null, exec),
3403
3404		() -> f.thenAccept(null),
3405		() -> f.thenAcceptAsync(null),
3406	<	() -> f.thenAcceptAsync((x) -> {} , null),
3406	>	() -> f.thenAcceptAsync(x -> {} , null),
3407		() -> f.thenAcceptAsync(null, exec),
3408
3409		() -> f.thenRun(null),
#	Line 3212 | Line 3438 | public class CompletableFutureTest exten
3438		() -> f.applyToEither(g, null),
3439		() -> f.applyToEitherAsync(g, null),
3440		() -> f.applyToEitherAsync(g, null, exec),
3441	<	() -> f.applyToEither(nullFuture, (x) -> x),
3442	<	() -> f.applyToEitherAsync(nullFuture, (x) -> x),
3443	<	() -> f.applyToEitherAsync(nullFuture, (x) -> x, exec),
3444	<	() -> f.applyToEitherAsync(g, (x) -> x, null),
3441	>	() -> f.applyToEither(nullFuture, x -> x),
3442	>	() -> f.applyToEitherAsync(nullFuture, x -> x),
3443	>	() -> f.applyToEitherAsync(nullFuture, x -> x, exec),
3444	>	() -> f.applyToEitherAsync(g, x -> x, null),
3445
3446		() -> f.acceptEither(g, null),
3447		() -> f.acceptEitherAsync(g, null),
3448		() -> f.acceptEitherAsync(g, null, exec),
3449	<	() -> f.acceptEither(nullFuture, (x) -> {}),
3450	<	() -> f.acceptEitherAsync(nullFuture, (x) -> {}),
3451	<	() -> f.acceptEitherAsync(nullFuture, (x) -> {}, exec),
3452	<	() -> f.acceptEitherAsync(g, (x) -> {}, null),
3449	>	() -> f.acceptEither(nullFuture, x -> {}),
3450	>	() -> f.acceptEitherAsync(nullFuture, x -> {}),
3451	>	() -> f.acceptEitherAsync(nullFuture, x -> {}, exec),
3452	>	() -> f.acceptEitherAsync(g, x -> {}, null),
3453
3454		() -> f.runAfterEither(g, null),
3455		() -> f.runAfterEitherAsync(g, null),
#	Line 3253 | Line 3479 | public class CompletableFutureTest exten
3479		() -> CompletableFuture.anyOf(null, f),
3480
3481		() -> f.obtrudeException(null),
3482	+
3483	+	() -> CompletableFuture.delayedExecutor(1L, SECONDS, null),
3484	+	() -> CompletableFuture.delayedExecutor(1L, null, exec),
3485	+	() -> CompletableFuture.delayedExecutor(1L, null),
3486	+
3487	+	() -> f.orTimeout(1L, null),
3488	+	() -> f.completeOnTimeout(42, 1L, null),
3489	+
3490	+	() -> CompletableFuture.failedFuture(null),
3491	+	() -> CompletableFuture.failedStage(null),
3492		};
3493
3494		assertThrows(NullPointerException.class, throwingActions);
#	Line 3260 | Line 3496 | public class CompletableFutureTest exten
3496		}
3497
3498		/**
3499	+	* Test submissions to an executor that rejects all tasks.
3500	+	*/
3501	+	public void testRejectingExecutor() {
3502	+	for (Integer v : new Integer[] { 1, null })
3503	+	{
3504	+	final CountingRejectingExecutor e = new CountingRejectingExecutor();
3505	+
3506	+	final CompletableFuture<Integer> complete = CompletableFuture.completedFuture(v);
3507	+	final CompletableFuture<Integer> incomplete = new CompletableFuture<>();
3508	+
3509	+	List<CompletableFuture<?>> futures = new ArrayList<>();
3510	+
3511	+	List<CompletableFuture<Integer>> srcs = new ArrayList<>();
3512	+	srcs.add(complete);
3513	+	srcs.add(incomplete);
3514	+
3515	+	for (CompletableFuture<Integer> src : srcs) {
3516	+	List<CompletableFuture<?>> fs = new ArrayList<>();
3517	+	fs.add(src.thenRunAsync(() -> {}, e));
3518	+	fs.add(src.thenAcceptAsync(z -> {}, e));
3519	+	fs.add(src.thenApplyAsync(z -> z, e));
3520	+
3521	+	fs.add(src.thenCombineAsync(src, (x, y) -> x, e));
3522	+	fs.add(src.thenAcceptBothAsync(src, (x, y) -> {}, e));
3523	+	fs.add(src.runAfterBothAsync(src, () -> {}, e));
3524	+
3525	+	fs.add(src.applyToEitherAsync(src, z -> z, e));
3526	+	fs.add(src.acceptEitherAsync(src, z -> {}, e));
3527	+	fs.add(src.runAfterEitherAsync(src, () -> {}, e));
3528	+
3529	+	fs.add(src.thenComposeAsync(z -> null, e));
3530	+	fs.add(src.whenCompleteAsync((z, t) -> {}, e));
3531	+	fs.add(src.handleAsync((z, t) -> null, e));
3532	+
3533	+	for (CompletableFuture<?> future : fs) {
3534	+	if (src.isDone())
3535	+	checkCompletedWithWrappedException(future, e.ex);
3536	+	else
3537	+	checkIncomplete(future);
3538	+	}
3539	+	futures.addAll(fs);
3540	+	}
3541	+
3542	+	{
3543	+	List<CompletableFuture<?>> fs = new ArrayList<>();
3544	+
3545	+	fs.add(complete.thenCombineAsync(incomplete, (x, y) -> x, e));
3546	+	fs.add(incomplete.thenCombineAsync(complete, (x, y) -> x, e));
3547	+
3548	+	fs.add(complete.thenAcceptBothAsync(incomplete, (x, y) -> {}, e));
3549	+	fs.add(incomplete.thenAcceptBothAsync(complete, (x, y) -> {}, e));
3550	+
3551	+	fs.add(complete.runAfterBothAsync(incomplete, () -> {}, e));
3552	+	fs.add(incomplete.runAfterBothAsync(complete, () -> {}, e));
3553	+
3554	+	for (CompletableFuture<?> future : fs)
3555	+	checkIncomplete(future);
3556	+	futures.addAll(fs);
3557	+	}
3558	+
3559	+	{
3560	+	List<CompletableFuture<?>> fs = new ArrayList<>();
3561	+
3562	+	fs.add(complete.applyToEitherAsync(incomplete, z -> z, e));
3563	+	fs.add(incomplete.applyToEitherAsync(complete, z -> z, e));
3564	+
3565	+	fs.add(complete.acceptEitherAsync(incomplete, z -> {}, e));
3566	+	fs.add(incomplete.acceptEitherAsync(complete, z -> {}, e));
3567	+
3568	+	fs.add(complete.runAfterEitherAsync(incomplete, () -> {}, e));
3569	+	fs.add(incomplete.runAfterEitherAsync(complete, () -> {}, e));
3570	+
3571	+	for (CompletableFuture<?> future : fs)
3572	+	checkCompletedWithWrappedException(future, e.ex);
3573	+	futures.addAll(fs);
3574	+	}
3575	+
3576	+	incomplete.complete(v);
3577	+
3578	+	for (CompletableFuture<?> future : futures)
3579	+	checkCompletedWithWrappedException(future, e.ex);
3580	+
3581	+	assertEquals(futures.size(), e.count.get());
3582	+	}}
3583	+
3584	+	/**
3585	+	* Test submissions to an executor that rejects all tasks, but
3586	+	* should never be invoked because the dependent future is
3587	+	* explicitly completed.
3588	+	*/
3589	+	public void testRejectingExecutorNeverInvoked() {
3590	+	for (Integer v : new Integer[] { 1, null })
3591	+	{
3592	+	final CountingRejectingExecutor e = new CountingRejectingExecutor();
3593	+
3594	+	final CompletableFuture<Integer> complete = CompletableFuture.completedFuture(v);
3595	+	final CompletableFuture<Integer> incomplete = new CompletableFuture<>();
3596	+
3597	+	List<CompletableFuture<?>> futures = new ArrayList<>();
3598	+
3599	+	List<CompletableFuture<Integer>> srcs = new ArrayList<>();
3600	+	srcs.add(complete);
3601	+	srcs.add(incomplete);
3602	+
3603	+	List<CompletableFuture<?>> fs = new ArrayList<>();
3604	+	fs.add(incomplete.thenRunAsync(() -> {}, e));
3605	+	fs.add(incomplete.thenAcceptAsync(z -> {}, e));
3606	+	fs.add(incomplete.thenApplyAsync(z -> z, e));
3607	+
3608	+	fs.add(incomplete.thenCombineAsync(incomplete, (x, y) -> x, e));
3609	+	fs.add(incomplete.thenAcceptBothAsync(incomplete, (x, y) -> {}, e));
3610	+	fs.add(incomplete.runAfterBothAsync(incomplete, () -> {}, e));
3611	+
3612	+	fs.add(incomplete.applyToEitherAsync(incomplete, z -> z, e));
3613	+	fs.add(incomplete.acceptEitherAsync(incomplete, z -> {}, e));
3614	+	fs.add(incomplete.runAfterEitherAsync(incomplete, () -> {}, e));
3615	+
3616	+	fs.add(incomplete.thenComposeAsync(z -> null, e));
3617	+	fs.add(incomplete.whenCompleteAsync((z, t) -> {}, e));
3618	+	fs.add(incomplete.handleAsync((z, t) -> null, e));
3619	+
3620	+	fs.add(complete.thenCombineAsync(incomplete, (x, y) -> x, e));
3621	+	fs.add(incomplete.thenCombineAsync(complete, (x, y) -> x, e));
3622	+
3623	+	fs.add(complete.thenAcceptBothAsync(incomplete, (x, y) -> {}, e));
3624	+	fs.add(incomplete.thenAcceptBothAsync(complete, (x, y) -> {}, e));
3625	+
3626	+	fs.add(complete.runAfterBothAsync(incomplete, () -> {}, e));
3627	+	fs.add(incomplete.runAfterBothAsync(complete, () -> {}, e));
3628	+
3629	+	for (CompletableFuture<?> future : fs)
3630	+	checkIncomplete(future);
3631	+
3632	+	for (CompletableFuture<?> future : fs)
3633	+	future.complete(null);
3634	+
3635	+	incomplete.complete(v);
3636	+
3637	+	for (CompletableFuture<?> future : fs)
3638	+	checkCompletedNormally(future, null);
3639	+
3640	+	assertEquals(0, e.count.get());
3641	+	}}
3642	+
3643	+	/**
3644		* toCompletableFuture returns this CompletableFuture.
3645		*/
3646		public void testToCompletableFuture() {
#	Line 3267 | Line 3648 | public class CompletableFutureTest exten
3648		assertSame(f, f.toCompletableFuture());
3649		}
3650
3651	+	// jdk9
3652	+
3653	+	/**
3654	+	* newIncompleteFuture returns an incomplete CompletableFuture
3655	+	*/
3656	+	public void testNewIncompleteFuture() {
3657	+	for (Integer v1 : new Integer[] { 1, null })
3658	+	{
3659	+	CompletableFuture<Integer> f = new CompletableFuture<>();
3660	+	CompletableFuture<Integer> g = f.newIncompleteFuture();
3661	+	checkIncomplete(f);
3662	+	checkIncomplete(g);
3663	+	f.complete(v1);
3664	+	checkCompletedNormally(f, v1);
3665	+	checkIncomplete(g);
3666	+	g.complete(v1);
3667	+	checkCompletedNormally(g, v1);
3668	+	assertSame(g.getClass(), CompletableFuture.class);
3669	+	}}
3670	+
3671	+	/**
3672	+	* completedStage returns a completed CompletionStage
3673	+	*/
3674	+	public void testCompletedStage() {
3675	+	AtomicInteger x = new AtomicInteger(0);
3676	+	AtomicReference<Throwable> r = new AtomicReference<>();
3677	+	CompletionStage<Integer> f = CompletableFuture.completedStage(1);
3678	+	f.whenComplete((v, e) -> {if (e != null) r.set(e); else x.set(v);});
3679	+	assertEquals(x.get(), 1);
3680	+	assertNull(r.get());
3681	+	}
3682	+
3683	+	/**
3684	+	* defaultExecutor by default returns the commonPool if
3685	+	* it supports more than one thread.
3686	+	*/
3687	+	public void testDefaultExecutor() {
3688	+	CompletableFuture<Integer> f = new CompletableFuture<>();
3689	+	Executor e = f.defaultExecutor();
3690	+	Executor c = ForkJoinPool.commonPool();
3691	+	if (ForkJoinPool.getCommonPoolParallelism() > 1)
3692	+	assertSame(e, c);
3693	+	else
3694	+	assertNotSame(e, c);
3695	+	}
3696	+
3697	+	/**
3698	+	* failedFuture returns a CompletableFuture completed
3699	+	* exceptionally with the given Exception
3700	+	*/
3701	+	public void testFailedFuture() {
3702	+	CFException ex = new CFException();
3703	+	CompletableFuture<Integer> f = CompletableFuture.failedFuture(ex);
3704	+	checkCompletedExceptionally(f, ex);
3705	+	}
3706	+
3707	+	/**
3708	+	* failedFuture(null) throws NPE
3709	+	*/
3710	+	public void testFailedFuture_null() {
3711	+	try {
3712	+	CompletableFuture<Integer> f = CompletableFuture.failedFuture(null);
3713	+	shouldThrow();
3714	+	} catch (NullPointerException success) {}
3715	+	}
3716	+
3717	+	/**
3718	+	* copy returns a CompletableFuture that is completed normally,
3719	+	* with the same value, when source is.
3720	+	*/
3721	+	public void testCopy_normalCompletion() {
3722	+	for (boolean createIncomplete : new boolean[] { true, false })
3723	+	for (Integer v1 : new Integer[] { 1, null })
3724	+	{
3725	+	CompletableFuture<Integer> f = new CompletableFuture<>();
3726	+	if (!createIncomplete) assertTrue(f.complete(v1));
3727	+	CompletableFuture<Integer> g = f.copy();
3728	+	if (createIncomplete) {
3729	+	checkIncomplete(f);
3730	+	checkIncomplete(g);
3731	+	assertTrue(f.complete(v1));
3732	+	}
3733	+	checkCompletedNormally(f, v1);
3734	+	checkCompletedNormally(g, v1);
3735	+	}}
3736	+
3737	+	/**
3738	+	* copy returns a CompletableFuture that is completed exceptionally
3739	+	* when source is.
3740	+	*/
3741	+	public void testCopy_exceptionalCompletion() {
3742	+	for (boolean createIncomplete : new boolean[] { true, false })
3743	+	{
3744	+	CFException ex = new CFException();
3745	+	CompletableFuture<Integer> f = new CompletableFuture<>();
3746	+	if (!createIncomplete) f.completeExceptionally(ex);
3747	+	CompletableFuture<Integer> g = f.copy();
3748	+	if (createIncomplete) {
3749	+	checkIncomplete(f);
3750	+	checkIncomplete(g);
3751	+	f.completeExceptionally(ex);
3752	+	}
3753	+	checkCompletedExceptionally(f, ex);
3754	+	checkCompletedWithWrappedException(g, ex);
3755	+	}}
3756	+
3757	+	/**
3758	+	* Completion of a copy does not complete its source.
3759	+	*/
3760	+	public void testCopy_oneWayPropagation() {
3761	+	CompletableFuture<Integer> f = new CompletableFuture<>();
3762	+	assertTrue(f.copy().complete(1));
3763	+	assertTrue(f.copy().complete(null));
3764	+	assertTrue(f.copy().cancel(true));
3765	+	assertTrue(f.copy().cancel(false));
3766	+	assertTrue(f.copy().completeExceptionally(new CFException()));
3767	+	checkIncomplete(f);
3768	+	}
3769	+
3770	+	/**
3771	+	* minimalCompletionStage returns a CompletableFuture that is
3772	+	* completed normally, with the same value, when source is.
3773	+	*/
3774	+	public void testMinimalCompletionStage() {
3775	+	CompletableFuture<Integer> f = new CompletableFuture<>();
3776	+	CompletionStage<Integer> g = f.minimalCompletionStage();
3777	+	AtomicInteger x = new AtomicInteger(0);
3778	+	AtomicReference<Throwable> r = new AtomicReference<>();
3779	+	checkIncomplete(f);
3780	+	g.whenComplete((v, e) -> {if (e != null) r.set(e); else x.set(v);});
3781	+	f.complete(1);
3782	+	checkCompletedNormally(f, 1);
3783	+	assertEquals(x.get(), 1);
3784	+	assertNull(r.get());
3785	+	}
3786	+
3787	+	/**
3788	+	* minimalCompletionStage returns a CompletableFuture that is
3789	+	* completed exceptionally when source is.
3790	+	*/
3791	+	public void testMinimalCompletionStage2() {
3792	+	CompletableFuture<Integer> f = new CompletableFuture<>();
3793	+	CompletionStage<Integer> g = f.minimalCompletionStage();
3794	+	AtomicInteger x = new AtomicInteger(0);
3795	+	AtomicReference<Throwable> r = new AtomicReference<>();
3796	+	g.whenComplete((v, e) -> {if (e != null) r.set(e); else x.set(v);});
3797	+	checkIncomplete(f);
3798	+	CFException ex = new CFException();
3799	+	f.completeExceptionally(ex);
3800	+	checkCompletedExceptionally(f, ex);
3801	+	assertEquals(x.get(), 0);
3802	+	assertEquals(r.get().getCause(), ex);
3803	+	}
3804	+
3805	+	/**
3806	+	* failedStage returns a CompletionStage completed
3807	+	* exceptionally with the given Exception
3808	+	*/
3809	+	public void testFailedStage() {
3810	+	CFException ex = new CFException();
3811	+	CompletionStage<Integer> f = CompletableFuture.failedStage(ex);
3812	+	AtomicInteger x = new AtomicInteger(0);
3813	+	AtomicReference<Throwable> r = new AtomicReference<>();
3814	+	f.whenComplete((v, e) -> {if (e != null) r.set(e); else x.set(v);});
3815	+	assertEquals(x.get(), 0);
3816	+	assertEquals(r.get(), ex);
3817	+	}
3818	+
3819	+	/**
3820	+	* completeAsync completes with value of given supplier
3821	+	*/
3822	+	public void testCompleteAsync() {
3823	+	for (Integer v1 : new Integer[] { 1, null })
3824	+	{
3825	+	CompletableFuture<Integer> f = new CompletableFuture<>();
3826	+	f.completeAsync(() -> v1);
3827	+	f.join();
3828	+	checkCompletedNormally(f, v1);
3829	+	}}
3830	+
3831	+	/**
3832	+	* completeAsync completes exceptionally if given supplier throws
3833	+	*/
3834	+	public void testCompleteAsync2() {
3835	+	CompletableFuture<Integer> f = new CompletableFuture<>();
3836	+	CFException ex = new CFException();
3837	+	f.completeAsync(() -> { throw ex; });
3838	+	try {
3839	+	f.join();
3840	+	shouldThrow();
3841	+	} catch (CompletionException success) {}
3842	+	checkCompletedWithWrappedException(f, ex);
3843	+	}
3844	+
3845	+	/**
3846	+	* completeAsync with given executor completes with value of given supplier
3847	+	*/
3848	+	public void testCompleteAsync3() {
3849	+	for (Integer v1 : new Integer[] { 1, null })
3850	+	{
3851	+	CompletableFuture<Integer> f = new CompletableFuture<>();
3852	+	ThreadExecutor executor = new ThreadExecutor();
3853	+	f.completeAsync(() -> v1, executor);
3854	+	assertSame(v1, f.join());
3855	+	checkCompletedNormally(f, v1);
3856	+	assertEquals(1, executor.count.get());
3857	+	}}
3858	+
3859	+	/**
3860	+	* completeAsync with given executor completes exceptionally if
3861	+	* given supplier throws
3862	+	*/
3863	+	public void testCompleteAsync4() {
3864	+	CompletableFuture<Integer> f = new CompletableFuture<>();
3865	+	CFException ex = new CFException();
3866	+	ThreadExecutor executor = new ThreadExecutor();
3867	+	f.completeAsync(() -> { throw ex; }, executor);
3868	+	try {
3869	+	f.join();
3870	+	shouldThrow();
3871	+	} catch (CompletionException success) {}
3872	+	checkCompletedWithWrappedException(f, ex);
3873	+	assertEquals(1, executor.count.get());
3874	+	}
3875	+
3876	+	/**
3877	+	* orTimeout completes with TimeoutException if not complete
3878	+	*/
3879	+	public void testOrTimeout_timesOut() {
3880	+	long timeoutMillis = timeoutMillis();
3881	+	CompletableFuture<Integer> f = new CompletableFuture<>();
3882	+	long startTime = System.nanoTime();
3883	+	assertSame(f, f.orTimeout(timeoutMillis, MILLISECONDS));
3884	+	checkCompletedWithTimeoutException(f);
3885	+	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
3886	+	}
3887	+
3888	+	/**
3889	+	* orTimeout completes normally if completed before timeout
3890	+	*/
3891	+	public void testOrTimeout_completed() {
3892	+	for (Integer v1 : new Integer[] { 1, null })
3893	+	{
3894	+	CompletableFuture<Integer> f = new CompletableFuture<>();
3895	+	CompletableFuture<Integer> g = new CompletableFuture<>();
3896	+	long startTime = System.nanoTime();
3897	+	f.complete(v1);
3898	+	assertSame(f, f.orTimeout(LONG_DELAY_MS, MILLISECONDS));
3899	+	assertSame(g, g.orTimeout(LONG_DELAY_MS, MILLISECONDS));
3900	+	g.complete(v1);
3901	+	checkCompletedNormally(f, v1);
3902	+	checkCompletedNormally(g, v1);
3903	+	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS / 2);
3904	+	}}
3905	+
3906	+	/**
3907	+	* completeOnTimeout completes with given value if not complete
3908	+	*/
3909	+	public void testCompleteOnTimeout_timesOut() {
3910	+	testInParallel(() -> testCompleteOnTimeout_timesOut(42),
3911	+	() -> testCompleteOnTimeout_timesOut(null));
3912	+	}
3913	+
3914	+	/**
3915	+	* completeOnTimeout completes with given value if not complete
3916	+	*/
3917	+	public void testCompleteOnTimeout_timesOut(Integer v) {
3918	+	long timeoutMillis = timeoutMillis();
3919	+	CompletableFuture<Integer> f = new CompletableFuture<>();
3920	+	long startTime = System.nanoTime();
3921	+	assertSame(f, f.completeOnTimeout(v, timeoutMillis, MILLISECONDS));
3922	+	assertSame(v, f.join());
3923	+	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
3924	+	f.complete(99);         // should have no effect
3925	+	checkCompletedNormally(f, v);
3926	+	}
3927	+
3928	+	/**
3929	+	* completeOnTimeout has no effect if completed within timeout
3930	+	*/
3931	+	public void testCompleteOnTimeout_completed() {
3932	+	for (Integer v1 : new Integer[] { 1, null })
3933	+	{
3934	+	CompletableFuture<Integer> f = new CompletableFuture<>();
3935	+	CompletableFuture<Integer> g = new CompletableFuture<>();
3936	+	long startTime = System.nanoTime();
3937	+	f.complete(v1);
3938	+	assertSame(f, f.completeOnTimeout(-1, LONG_DELAY_MS, MILLISECONDS));
3939	+	assertSame(g, g.completeOnTimeout(-1, LONG_DELAY_MS, MILLISECONDS));
3940	+	g.complete(v1);
3941	+	checkCompletedNormally(f, v1);
3942	+	checkCompletedNormally(g, v1);
3943	+	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS / 2);
3944	+	}}
3945	+
3946	+	/**
3947	+	* delayedExecutor returns an executor that delays submission
3948	+	*/
3949	+	public void testDelayedExecutor() {
3950	+	testInParallel(() -> testDelayedExecutor(null, null),
3951	+	() -> testDelayedExecutor(null, 1),
3952	+	() -> testDelayedExecutor(new ThreadExecutor(), 1),
3953	+	() -> testDelayedExecutor(new ThreadExecutor(), 1));
3954	+	}
3955	+
3956	+	public void testDelayedExecutor(Executor executor, Integer v) throws Exception {
3957	+	long timeoutMillis = timeoutMillis();
3958	+	// Use an "unreasonably long" long timeout to catch lingering threads
3959	+	long longTimeoutMillis = 1000 * 60 * 60 * 24;
3960	+	final Executor delayer, longDelayer;
3961	+	if (executor == null) {
3962	+	delayer = CompletableFuture.delayedExecutor(timeoutMillis, MILLISECONDS);
3963	+	longDelayer = CompletableFuture.delayedExecutor(longTimeoutMillis, MILLISECONDS);
3964	+	} else {
3965	+	delayer = CompletableFuture.delayedExecutor(timeoutMillis, MILLISECONDS, executor);
3966	+	longDelayer = CompletableFuture.delayedExecutor(longTimeoutMillis, MILLISECONDS, executor);
3967	+	}
3968	+	long startTime = System.nanoTime();
3969	+	CompletableFuture<Integer> f =
3970	+	CompletableFuture.supplyAsync(() -> v, delayer);
3971	+	CompletableFuture<Integer> g =
3972	+	CompletableFuture.supplyAsync(() -> v, longDelayer);
3973	+
3974	+	assertNull(g.getNow(null));
3975	+
3976	+	assertSame(v, f.get(LONG_DELAY_MS, MILLISECONDS));
3977	+	long millisElapsed = millisElapsedSince(startTime);
3978	+	assertTrue(millisElapsed >= timeoutMillis);
3979	+	assertTrue(millisElapsed < LONG_DELAY_MS / 2);
3980	+
3981	+	checkCompletedNormally(f, v);
3982	+
3983	+	checkIncomplete(g);
3984	+	assertTrue(g.cancel(true));
3985	+	}
3986	+
3987		//--- tests of implementation details; not part of official tck ---
3988
3989		Object resultOf(CompletableFuture<?> f) {
3990	+	SecurityManager sm = System.getSecurityManager();
3991	+	if (sm != null) {
3992	+	try {
3993	+	System.setSecurityManager(null);
3994	+	} catch (SecurityException giveUp) {
3995	+	return "Reflection not available";
3996	+	}
3997	+	}
3998	+
3999		try {
4000		java.lang.reflect.Field resultField
4001		= CompletableFuture.class.getDeclaredField("result");
4002		resultField.setAccessible(true);
4003		return resultField.get(f);
4004	<	} catch (Throwable t) { throw new AssertionError(t); }
4004	>	} catch (Throwable t) {
4005	>	throw new AssertionError(t);
4006	>	} finally {
4007	>	if (sm != null) System.setSecurityManager(sm);
4008	>	}
4009		}
4010
4011		public void testExceptionPropagationReusesResultObject() {
#	Line 3286 | Line 4016 | public class CompletableFutureTest exten
4016		final CompletableFuture<Integer> v42 = CompletableFuture.completedFuture(42);
4017		final CompletableFuture<Integer> incomplete = new CompletableFuture<>();
4018
4019	+	final Runnable noopRunnable = new Noop(m);
4020	+	final Consumer<Integer> noopConsumer = new NoopConsumer(m);
4021	+	final Function<Integer, Integer> incFunction = new IncFunction(m);
4022	+
4023		List<Function<CompletableFuture<Integer>, CompletableFuture<?>>> funs
4024		= new ArrayList<>();
4025
4026	<	funs.add((y) -> m.thenRun(y, new Noop(m)));
4027	<	funs.add((y) -> m.thenAccept(y, new NoopConsumer(m)));
4028	<	funs.add((y) -> m.thenApply(y, new IncFunction(m)));
4029	<
4030	<	funs.add((y) -> m.runAfterEither(y, incomplete, new Noop(m)));
4031	<	funs.add((y) -> m.acceptEither(y, incomplete, new NoopConsumer(m)));
4032	<	funs.add((y) -> m.applyToEither(y, incomplete, new IncFunction(m)));
4033	<
4034	<	funs.add((y) -> m.runAfterBoth(y, v42, new Noop(m)));
4035	<	funs.add((y) -> m.thenAcceptBoth(y, v42, new SubtractAction(m)));
4036	<	funs.add((y) -> m.thenCombine(y, v42, new SubtractFunction(m)));
4037	<
4038	<	funs.add((y) -> m.whenComplete(y, (Integer x, Throwable t) -> {}));
4039	<
4040	<	funs.add((y) -> m.thenCompose(y, new CompletableFutureInc(m)));
4041	<
4042	<	funs.add((y) -> CompletableFuture.allOf(new CompletableFuture<?>[] {y, v42}));
4043	<	funs.add((y) -> CompletableFuture.anyOf(new CompletableFuture<?>[] {y, incomplete}));
4026	>	funs.add(y -> m.thenRun(y, noopRunnable));
4027	>	funs.add(y -> m.thenAccept(y, noopConsumer));
4028	>	funs.add(y -> m.thenApply(y, incFunction));
4029	>
4030	>	funs.add(y -> m.runAfterEither(y, incomplete, noopRunnable));
4031	>	funs.add(y -> m.acceptEither(y, incomplete, noopConsumer));
4032	>	funs.add(y -> m.applyToEither(y, incomplete, incFunction));
4033	>
4034	>	funs.add(y -> m.runAfterBoth(y, v42, noopRunnable));
4035	>	funs.add(y -> m.runAfterBoth(v42, y, noopRunnable));
4036	>	funs.add(y -> m.thenAcceptBoth(y, v42, new SubtractAction(m)));
4037	>	funs.add(y -> m.thenAcceptBoth(v42, y, new SubtractAction(m)));
4038	>	funs.add(y -> m.thenCombine(y, v42, new SubtractFunction(m)));
4039	>	funs.add(y -> m.thenCombine(v42, y, new SubtractFunction(m)));
4040	>
4041	>	funs.add(y -> m.whenComplete(y, (Integer r, Throwable t) -> {}));
4042	>
4043	>	funs.add(y -> m.thenCompose(y, new CompletableFutureInc(m)));
4044	>
4045	>	funs.add(y -> CompletableFuture.allOf(y));
4046	>	funs.add(y -> CompletableFuture.allOf(y, v42));
4047	>	funs.add(y -> CompletableFuture.allOf(v42, y));
4048	>	funs.add(y -> CompletableFuture.anyOf(y));
4049	>	funs.add(y -> CompletableFuture.anyOf(y, incomplete));
4050	>	funs.add(y -> CompletableFuture.anyOf(incomplete, y));
4051
4052		for (Function<CompletableFuture<Integer>, CompletableFuture<?>>
4053		fun : funs) {
4054		CompletableFuture<Integer> f = new CompletableFuture<>();
4055		f.completeExceptionally(ex);
4056	<	CompletableFuture<Integer> src = m.thenApply(f, new IncFunction(m));
4056	>	CompletableFuture<Integer> src = m.thenApply(f, incFunction);
4057		checkCompletedWithWrappedException(src, ex);
4058		CompletableFuture<?> dep = fun.apply(src);
4059		checkCompletedWithWrappedException(dep, ex);
#	Line 3322 | Line 4063 | public class CompletableFutureTest exten
4063		for (Function<CompletableFuture<Integer>, CompletableFuture<?>>
4064		fun : funs) {
4065		CompletableFuture<Integer> f = new CompletableFuture<>();
4066	<	CompletableFuture<Integer> src = m.thenApply(f, new IncFunction(m));
4066	>	CompletableFuture<Integer> src = m.thenApply(f, incFunction);
4067		CompletableFuture<?> dep = fun.apply(src);
4068		f.completeExceptionally(ex);
4069		checkCompletedWithWrappedException(src, ex);
#	Line 3336 | Line 4077 | public class CompletableFutureTest exten
4077		CompletableFuture<Integer> f = new CompletableFuture<>();
4078		f.cancel(mayInterruptIfRunning);
4079		checkCancelled(f);
4080	<	CompletableFuture<Integer> src = m.thenApply(f, new IncFunction(m));
4080	>	CompletableFuture<Integer> src = m.thenApply(f, incFunction);
4081		checkCompletedWithWrappedCancellationException(src);
4082		CompletableFuture<?> dep = fun.apply(src);
4083		checkCompletedWithWrappedCancellationException(dep);
#	Line 3347 | Line 4088 | public class CompletableFutureTest exten
4088		for (Function<CompletableFuture<Integer>, CompletableFuture<?>>
4089		fun : funs) {
4090		CompletableFuture<Integer> f = new CompletableFuture<>();
4091	<	CompletableFuture<Integer> src = m.thenApply(f, new IncFunction(m));
4091	>	CompletableFuture<Integer> src = m.thenApply(f, incFunction);
4092		CompletableFuture<?> dep = fun.apply(src);
4093		f.cancel(mayInterruptIfRunning);
4094		checkCancelled(f);
#	Line 3357 | Line 4098 | public class CompletableFutureTest exten
4098		}
4099		}}
4100
4101	+	/**
4102	+	* Minimal completion stages throw UOE for most non-CompletionStage methods
4103	+	*/
4104	+	public void testMinimalCompletionStage_minimality() {
4105	+	if (!testImplementationDetails) return;
4106	+	Function<Method, String> toSignature =
4107	+	method -> method.getName() + Arrays.toString(method.getParameterTypes());
4108	+	Predicate<Method> isNotStatic =
4109	+	method -> (method.getModifiers() & Modifier.STATIC) == 0;
4110	+	List<Method> minimalMethods =
4111	+	Stream.of(Object.class, CompletionStage.class)
4112	+	.flatMap(klazz -> Stream.of(klazz.getMethods()))
4113	+	.filter(isNotStatic)
4114	+	.collect(Collectors.toList());
4115	+	// Methods from CompletableFuture permitted NOT to throw UOE
4116	+	String[] signatureWhitelist = {
4117	+	"newIncompleteFuture[]",
4118	+	"defaultExecutor[]",
4119	+	"minimalCompletionStage[]",
4120	+	"copy[]",
4121	+	};
4122	+	Set<String> permittedMethodSignatures =
4123	+	Stream.concat(minimalMethods.stream().map(toSignature),
4124	+	Stream.of(signatureWhitelist))
4125	+	.collect(Collectors.toSet());
4126	+	List<Method> allMethods = Stream.of(CompletableFuture.class.getMethods())
4127	+	.filter(isNotStatic)
4128	+	.filter(method -> !permittedMethodSignatures.contains(toSignature.apply(method)))
4129	+	.collect(Collectors.toList());
4130	+
4131	+	List<CompletionStage<Integer>> stages = new ArrayList<>();
4132	+	CompletionStage<Integer> min =
4133	+	new CompletableFuture<Integer>().minimalCompletionStage();
4134	+	stages.add(min);
4135	+	stages.add(min.thenApply(x -> x));
4136	+	stages.add(CompletableFuture.completedStage(1));
4137	+	stages.add(CompletableFuture.failedStage(new CFException()));
4138	+
4139	+	List<Method> bugs = new ArrayList<>();
4140	+	for (Method method : allMethods) {
4141	+	Class<?>[] parameterTypes = method.getParameterTypes();
4142	+	Object[] args = new Object[parameterTypes.length];
4143	+	// Manufacture boxed primitives for primitive params
4144	+	for (int i = 0; i < args.length; i++) {
4145	+	Class<?> type = parameterTypes[i];
4146	+	if (parameterTypes[i] == boolean.class)
4147	+	args[i] = false;
4148	+	else if (parameterTypes[i] == int.class)
4149	+	args[i] = 0;
4150	+	else if (parameterTypes[i] == long.class)
4151	+	args[i] = 0L;
4152	+	}
4153	+	for (CompletionStage<Integer> stage : stages) {
4154	+	try {
4155	+	method.invoke(stage, args);
4156	+	bugs.add(method);
4157	+	}
4158	+	catch (java.lang.reflect.InvocationTargetException expected) {
4159	+	if (! (expected.getCause() instanceof UnsupportedOperationException)) {
4160	+	bugs.add(method);
4161	+	// expected.getCause().printStackTrace();
4162	+	}
4163	+	}
4164	+	catch (ReflectiveOperationException bad) { throw new Error(bad); }
4165	+	}
4166	+	}
4167	+	if (!bugs.isEmpty())
4168	+	throw new Error("Methods did not throw UOE: " + bugs);
4169	+	}
4170	+
4171	+	/**
4172	+	* minimalStage.toCompletableFuture() returns a CompletableFuture that
4173	+	* is completed normally, with the same value, when source is.
4174	+	*/
4175	+	public void testMinimalCompletionStage_toCompletableFuture_normalCompletion() {
4176	+	for (boolean createIncomplete : new boolean[] { true, false })
4177	+	for (Integer v1 : new Integer[] { 1, null })
4178	+	{
4179	+	CompletableFuture<Integer> f = new CompletableFuture<>();
4180	+	CompletionStage<Integer> minimal = f.minimalCompletionStage();
4181	+	if (!createIncomplete) assertTrue(f.complete(v1));
4182	+	CompletableFuture<Integer> g = minimal.toCompletableFuture();
4183	+	if (createIncomplete) {
4184	+	checkIncomplete(f);
4185	+	checkIncomplete(g);
4186	+	assertTrue(f.complete(v1));
4187	+	}
4188	+	checkCompletedNormally(f, v1);
4189	+	checkCompletedNormally(g, v1);
4190	+	}}
4191	+
4192	+	/**
4193	+	* minimalStage.toCompletableFuture() returns a CompletableFuture that
4194	+	* is completed exceptionally when source is.
4195	+	*/
4196	+	public void testMinimalCompletionStage_toCompletableFuture_exceptionalCompletion() {
4197	+	for (boolean createIncomplete : new boolean[] { true, false })
4198	+	{
4199	+	CFException ex = new CFException();
4200	+	CompletableFuture<Integer> f = new CompletableFuture<>();
4201	+	CompletionStage<Integer> minimal = f.minimalCompletionStage();
4202	+	if (!createIncomplete) f.completeExceptionally(ex);
4203	+	CompletableFuture<Integer> g = minimal.toCompletableFuture();
4204	+	if (createIncomplete) {
4205	+	checkIncomplete(f);
4206	+	checkIncomplete(g);
4207	+	f.completeExceptionally(ex);
4208	+	}
4209	+	checkCompletedExceptionally(f, ex);
4210	+	checkCompletedWithWrappedException(g, ex);
4211	+	}}
4212	+
4213	+	/**
4214	+	* minimalStage.toCompletableFuture() gives mutable CompletableFuture
4215	+	*/
4216	+	public void testMinimalCompletionStage_toCompletableFuture_mutable() {
4217	+	for (Integer v1 : new Integer[] { 1, null })
4218	+	{
4219	+	CompletableFuture<Integer> f = new CompletableFuture<>();
4220	+	CompletionStage minimal = f.minimalCompletionStage();
4221	+	CompletableFuture<Integer> g = minimal.toCompletableFuture();
4222	+	assertTrue(g.complete(v1));
4223	+	checkCompletedNormally(g, v1);
4224	+	checkIncomplete(f);
4225	+	checkIncomplete(minimal.toCompletableFuture());
4226	+	}}
4227	+
4228	+	/**
4229	+	* minimalStage.toCompletableFuture().join() awaits completion
4230	+	*/
4231	+	public void testMinimalCompletionStage_toCompletableFuture_join() throws Exception {
4232	+	for (boolean createIncomplete : new boolean[] { true, false })
4233	+	for (Integer v1 : new Integer[] { 1, null })
4234	+	{
4235	+	CompletableFuture<Integer> f = new CompletableFuture<>();
4236	+	if (!createIncomplete) assertTrue(f.complete(v1));
4237	+	CompletionStage<Integer> minimal = f.minimalCompletionStage();
4238	+	if (createIncomplete) assertTrue(f.complete(v1));
4239	+	assertEquals(v1, minimal.toCompletableFuture().join());
4240	+	assertEquals(v1, minimal.toCompletableFuture().get());
4241	+	checkCompletedNormally(minimal.toCompletableFuture(), v1);
4242	+	}}
4243	+
4244	+	/**
4245	+	* Completion of a toCompletableFuture copy of a minimal stage
4246	+	* does not complete its source.
4247	+	*/
4248	+	public void testMinimalCompletionStage_toCompletableFuture_oneWayPropagation() {
4249	+	CompletableFuture<Integer> f = new CompletableFuture<>();
4250	+	CompletionStage<Integer> g = f.minimalCompletionStage();
4251	+	assertTrue(g.toCompletableFuture().complete(1));
4252	+	assertTrue(g.toCompletableFuture().complete(null));
4253	+	assertTrue(g.toCompletableFuture().cancel(true));
4254	+	assertTrue(g.toCompletableFuture().cancel(false));
4255	+	assertTrue(g.toCompletableFuture().completeExceptionally(new CFException()));
4256	+	checkIncomplete(g.toCompletableFuture());
4257	+	f.complete(1);
4258	+	checkCompletedNormally(g.toCompletableFuture(), 1);
4259	+	}
4260	+
4261	+	/** Demo utility method for external reliable toCompletableFuture */
4262	+	static <T> CompletableFuture<T> toCompletableFuture(CompletionStage<T> stage) {
4263	+	CompletableFuture<T> f = new CompletableFuture<>();
4264	+	stage.handle((T t, Throwable ex) -> {
4265	+	if (ex != null) f.completeExceptionally(ex);
4266	+	else f.complete(t);
4267	+	return null;
4268	+	});
4269	+	return f;
4270	+	}
4271	+
4272	+	/** Demo utility method to join a CompletionStage */
4273	+	static <T> T join(CompletionStage<T> stage) {
4274	+	return toCompletableFuture(stage).join();
4275	+	}
4276	+
4277	+	/**
4278	+	* Joining a minimal stage "by hand" works
4279	+	*/
4280	+	public void testMinimalCompletionStage_join_by_hand() {
4281	+	for (boolean createIncomplete : new boolean[] { true, false })
4282	+	for (Integer v1 : new Integer[] { 1, null })
4283	+	{
4284	+	CompletableFuture<Integer> f = new CompletableFuture<>();
4285	+	CompletionStage<Integer> minimal = f.minimalCompletionStage();
4286	+	CompletableFuture<Integer> g = new CompletableFuture<>();
4287	+	if (!createIncomplete) assertTrue(f.complete(v1));
4288	+	minimal.thenAccept(x -> g.complete(x));
4289	+	if (createIncomplete) assertTrue(f.complete(v1));
4290	+	g.join();
4291	+	checkCompletedNormally(g, v1);
4292	+	checkCompletedNormally(f, v1);
4293	+	assertEquals(v1, join(minimal));
4294	+	}}
4295	+
4296	+	static class Monad {
4297	+	static class ZeroException extends RuntimeException {
4298	+	public ZeroException() { super("monadic zero"); }
4299	+	}
4300	+	// "return", "unit"
4301	+	static <T> CompletableFuture<T> unit(T value) {
4302	+	return completedFuture(value);
4303	+	}
4304	+	// monadic zero ?
4305	+	static <T> CompletableFuture<T> zero() {
4306	+	return failedFuture(new ZeroException());
4307	+	}
4308	+	// >=>
4309	+	static <T,U,V> Function<T, CompletableFuture<V>> compose
4310	+	(Function<T, CompletableFuture<U>> f,
4311	+	Function<U, CompletableFuture<V>> g) {
4312	+	return x -> f.apply(x).thenCompose(g);
4313	+	}
4314	+
4315	+	static void assertZero(CompletableFuture<?> f) {
4316	+	try {
4317	+	f.getNow(null);
4318	+	throw new AssertionError("should throw");
4319	+	} catch (CompletionException success) {
4320	+	assertTrue(success.getCause() instanceof ZeroException);
4321	+	}
4322	+	}
4323	+
4324	+	static <T> void assertFutureEquals(CompletableFuture<T> f,
4325	+	CompletableFuture<T> g) {
4326	+	T fval = null, gval = null;
4327	+	Throwable fex = null, gex = null;
4328	+
4329	+	try { fval = f.get(); }
4330	+	catch (ExecutionException ex) { fex = ex.getCause(); }
4331	+	catch (Throwable ex) { fex = ex; }
4332	+
4333	+	try { gval = g.get(); }
4334	+	catch (ExecutionException ex) { gex = ex.getCause(); }
4335	+	catch (Throwable ex) { gex = ex; }
4336	+
4337	+	if (fex != null || gex != null)
4338	+	assertSame(fex.getClass(), gex.getClass());
4339	+	else
4340	+	assertEquals(fval, gval);
4341	+	}
4342	+
4343	+	static class PlusFuture<T> extends CompletableFuture<T> {
4344	+	AtomicReference<Throwable> firstFailure = new AtomicReference<>(null);
4345	+	}
4346	+
4347	+	/** Implements "monadic plus". */
4348	+	static <T> CompletableFuture<T> plus(CompletableFuture<? extends T> f,
4349	+	CompletableFuture<? extends T> g) {
4350	+	PlusFuture<T> plus = new PlusFuture<T>();
4351	+	BiConsumer<T, Throwable> action = (T result, Throwable ex) -> {
4352	+	try {
4353	+	if (ex == null) {
4354	+	if (plus.complete(result))
4355	+	if (plus.firstFailure.get() != null)
4356	+	plus.firstFailure.set(null);
4357	+	}
4358	+	else if (plus.firstFailure.compareAndSet(null, ex)) {
4359	+	if (plus.isDone())
4360	+	plus.firstFailure.set(null);
4361	+	}
4362	+	else {
4363	+	// first failure has precedence
4364	+	Throwable first = plus.firstFailure.getAndSet(null);
4365	+
4366	+	// may fail with "Self-suppression not permitted"
4367	+	try { first.addSuppressed(ex); }
4368	+	catch (Exception ignored) {}
4369	+
4370	+	plus.completeExceptionally(first);
4371	+	}
4372	+	} catch (Throwable unexpected) {
4373	+	plus.completeExceptionally(unexpected);
4374	+	}
4375	+	};
4376	+	f.whenComplete(action);
4377	+	g.whenComplete(action);
4378	+	return plus;
4379	+	}
4380	+	}
4381	+
4382	+	/**
4383	+	* CompletableFuture is an additive monad - sort of.
4384	+	* https://en.wikipedia.org/wiki/Monad_(functional_programming)#Additive_monads
4385	+	*/
4386	+	public void testAdditiveMonad() throws Throwable {
4387	+	Function<Long, CompletableFuture<Long>> unit = Monad::unit;
4388	+	CompletableFuture<Long> zero = Monad.zero();
4389	+
4390	+	// Some mutually non-commutative functions
4391	+	Function<Long, CompletableFuture<Long>> triple
4392	+	= x -> Monad.unit(3 * x);
4393	+	Function<Long, CompletableFuture<Long>> inc
4394	+	= x -> Monad.unit(x + 1);
4395	+
4396	+	// unit is a right identity: m >>= unit === m
4397	+	Monad.assertFutureEquals(inc.apply(5L).thenCompose(unit),
4398	+	inc.apply(5L));
4399	+	// unit is a left identity: (unit x) >>= f === f x
4400	+	Monad.assertFutureEquals(unit.apply(5L).thenCompose(inc),
4401	+	inc.apply(5L));
4402	+
4403	+	// associativity: (m >>= f) >>= g === m >>= ( \x -> (f x >>= g) )
4404	+	Monad.assertFutureEquals(
4405	+	unit.apply(5L).thenCompose(inc).thenCompose(triple),
4406	+	unit.apply(5L).thenCompose(x -> inc.apply(x).thenCompose(triple)));
4407	+
4408	+	// The case for CompletableFuture as an additive monad is weaker...
4409	+
4410	+	// zero is a monadic zero
4411	+	Monad.assertZero(zero);
4412	+
4413	+	// left zero: zero >>= f === zero
4414	+	Monad.assertZero(zero.thenCompose(inc));
4415	+	// right zero: f >>= (\x -> zero) === zero
4416	+	Monad.assertZero(inc.apply(5L).thenCompose(x -> zero));
4417	+
4418	+	// f plus zero === f
4419	+	Monad.assertFutureEquals(Monad.unit(5L),
4420	+	Monad.plus(Monad.unit(5L), zero));
4421	+	// zero plus f === f
4422	+	Monad.assertFutureEquals(Monad.unit(5L),
4423	+	Monad.plus(zero, Monad.unit(5L)));
4424	+	// zero plus zero === zero
4425	+	Monad.assertZero(Monad.plus(zero, zero));
4426	+	{
4427	+	CompletableFuture<Long> f = Monad.plus(Monad.unit(5L),
4428	+	Monad.unit(8L));
4429	+	// non-determinism
4430	+	assertTrue(f.get() == 5L || f.get() == 8L);
4431	+	}
4432	+
4433	+	CompletableFuture<Long> godot = new CompletableFuture<>();
4434	+	// f plus godot === f (doesn't wait for godot)
4435	+	Monad.assertFutureEquals(Monad.unit(5L),
4436	+	Monad.plus(Monad.unit(5L), godot));
4437	+	// godot plus f === f (doesn't wait for godot)
4438	+	Monad.assertFutureEquals(Monad.unit(5L),
4439	+	Monad.plus(godot, Monad.unit(5L)));
4440	+	}
4441	+
4442	+	/** Test long recursive chains of CompletableFutures with cascading completions */
4443	+	@SuppressWarnings("FutureReturnValueIgnored")
4444	+	public void testRecursiveChains() throws Throwable {
4445	+	for (ExecutionMode m : ExecutionMode.values())
4446	+	for (boolean addDeadEnds : new boolean[] { true, false })
4447	+	{
4448	+	final int val = 42;
4449	+	final int n = expensiveTests ? 1_000 : 2;
4450	+	CompletableFuture<Integer> head = new CompletableFuture<>();
4451	+	CompletableFuture<Integer> tail = head;
4452	+	for (int i = 0; i < n; i++) {
4453	+	if (addDeadEnds) m.thenApply(tail, v -> v + 1);
4454	+	tail = m.thenApply(tail, v -> v + 1);
4455	+	if (addDeadEnds) m.applyToEither(tail, tail, v -> v + 1);
4456	+	tail = m.applyToEither(tail, tail, v -> v + 1);
4457	+	if (addDeadEnds) m.thenCombine(tail, tail, (v, w) -> v + 1);
4458	+	tail = m.thenCombine(tail, tail, (v, w) -> v + 1);
4459	+	}
4460	+	head.complete(val);
4461	+	assertEquals(val + 3 * n, (int) tail.join());
4462	+	}}
4463	+
4464	+	/**
4465	+	* A single CompletableFuture with many dependents.
4466	+	* A demo of scalability - runtime is O(n).
4467	+	*/
4468	+	@SuppressWarnings("FutureReturnValueIgnored")
4469	+	public void testManyDependents() throws Throwable {
4470	+	final int n = expensiveTests ? 1_000_000 : 10;
4471	+	final CompletableFuture<Void> head = new CompletableFuture<>();
4472	+	final CompletableFuture<Void> complete = CompletableFuture.completedFuture((Void)null);
4473	+	final AtomicInteger count = new AtomicInteger(0);
4474	+	for (int i = 0; i < n; i++) {
4475	+	head.thenRun(() -> count.getAndIncrement());
4476	+	head.thenAccept(x -> count.getAndIncrement());
4477	+	head.thenApply(x -> count.getAndIncrement());
4478	+
4479	+	head.runAfterBoth(complete, () -> count.getAndIncrement());
4480	+	head.thenAcceptBoth(complete, (x, y) -> count.getAndIncrement());
4481	+	head.thenCombine(complete, (x, y) -> count.getAndIncrement());
4482	+	complete.runAfterBoth(head, () -> count.getAndIncrement());
4483	+	complete.thenAcceptBoth(head, (x, y) -> count.getAndIncrement());
4484	+	complete.thenCombine(head, (x, y) -> count.getAndIncrement());
4485	+
4486	+	head.runAfterEither(new CompletableFuture<Void>(), () -> count.getAndIncrement());
4487	+	head.acceptEither(new CompletableFuture<Void>(), x -> count.getAndIncrement());
4488	+	head.applyToEither(new CompletableFuture<Void>(), x -> count.getAndIncrement());
4489	+	new CompletableFuture<Void>().runAfterEither(head, () -> count.getAndIncrement());
4490	+	new CompletableFuture<Void>().acceptEither(head, x -> count.getAndIncrement());
4491	+	new CompletableFuture<Void>().applyToEither(head, x -> count.getAndIncrement());
4492	+	}
4493	+	head.complete(null);
4494	+	assertEquals(5 * 3 * n, count.get());
4495	+	}
4496	+
4497	+	/** ant -Dvmoptions=-Xmx8m -Djsr166.expensiveTests=true -Djsr166.tckTestClass=CompletableFutureTest tck */
4498	+	@SuppressWarnings("FutureReturnValueIgnored")
4499	+	public void testCoCompletionGarbageRetention() throws Throwable {
4500	+	final int n = expensiveTests ? 1_000_000 : 10;
4501	+	final CompletableFuture<Integer> incomplete = new CompletableFuture<>();
4502	+	CompletableFuture<Integer> f;
4503	+	for (int i = 0; i < n; i++) {
4504	+	f = new CompletableFuture<>();
4505	+	f.runAfterEither(incomplete, () -> {});
4506	+	f.complete(null);
4507	+
4508	+	f = new CompletableFuture<>();
4509	+	f.acceptEither(incomplete, x -> {});
4510	+	f.complete(null);
4511	+
4512	+	f = new CompletableFuture<>();
4513	+	f.applyToEither(incomplete, x -> x);
4514	+	f.complete(null);
4515	+
4516	+	f = new CompletableFuture<>();
4517	+	CompletableFuture.anyOf(f, incomplete);
4518	+	f.complete(null);
4519	+	}
4520	+
4521	+	for (int i = 0; i < n; i++) {
4522	+	f = new CompletableFuture<>();
4523	+	incomplete.runAfterEither(f, () -> {});
4524	+	f.complete(null);
4525	+
4526	+	f = new CompletableFuture<>();
4527	+	incomplete.acceptEither(f, x -> {});
4528	+	f.complete(null);
4529	+
4530	+	f = new CompletableFuture<>();
4531	+	incomplete.applyToEither(f, x -> x);
4532	+	f.complete(null);
4533	+
4534	+	f = new CompletableFuture<>();
4535	+	CompletableFuture.anyOf(incomplete, f);
4536	+	f.complete(null);
4537	+	}
4538	+	}
4539	+
4540	+	/**
4541	+	* Reproduction recipe for:
4542	+	* 8160402: Garbage retention with CompletableFuture.anyOf
4543	+	* 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
4544	+	*/
4545	+	public void testAnyOfGarbageRetention() throws Throwable {
4546	+	for (Integer v : new Integer[] { 1, null })
4547	+	{
4548	+	final int n = expensiveTests ? 100_000 : 10;
4549	+	CompletableFuture<Integer>[] fs
4550	+	= (CompletableFuture<Integer>[]) new CompletableFuture<?>[100];
4551	+	for (int i = 0; i < fs.length; i++)
4552	+	fs[i] = new CompletableFuture<>();
4553	+	fs[fs.length - 1].complete(v);
4554	+	for (int i = 0; i < n; i++)
4555	+	checkCompletedNormally(CompletableFuture.anyOf(fs), v);
4556	+	}}
4557	+
4558	+	/**
4559	+	* Checks for garbage retention with allOf.
4560	+	*
4561	+	* As of 2016-07, fails with OOME:
4562	+	* ant -Dvmoptions=-Xmx8m -Djsr166.expensiveTests=true -Djsr166.tckTestClass=CompletableFutureTest -Djsr166.methodFilter=testCancelledAllOfGarbageRetention tck
4563	+	*/
4564	+	public void testCancelledAllOfGarbageRetention() throws Throwable {
4565	+	final int n = expensiveTests ? 100_000 : 10;
4566	+	CompletableFuture<Integer>[] fs
4567	+	= (CompletableFuture<Integer>[]) new CompletableFuture<?>[100];
4568	+	for (int i = 0; i < fs.length; i++)
4569	+	fs[i] = new CompletableFuture<>();
4570	+	for (int i = 0; i < n; i++)
4571	+	assertTrue(CompletableFuture.allOf(fs).cancel(false));
4572	+	}
4573	+
4574	+	/**
4575	+	* Checks for garbage retention when a dependent future is
4576	+	* cancelled and garbage-collected.
4577	+	* 8161600: Garbage retention when source CompletableFutures are never completed
4578	+	*
4579	+	* As of 2016-07, fails with OOME:
4580	+	* ant -Dvmoptions=-Xmx8m -Djsr166.expensiveTests=true -Djsr166.tckTestClass=CompletableFutureTest -Djsr166.methodFilter=testCancelledGarbageRetention tck
4581	+	*/
4582	+	public void testCancelledGarbageRetention() throws Throwable {
4583	+	final int n = expensiveTests ? 100_000 : 10;
4584	+	CompletableFuture<Integer> neverCompleted = new CompletableFuture<>();
4585	+	for (int i = 0; i < n; i++)
4586	+	assertTrue(neverCompleted.thenRun(() -> {}).cancel(true));
4587	+	}
4588	+
4589	+	/**
4590	+	* Checks for garbage retention when MinimalStage.toCompletableFuture()
4591	+	* is invoked many times.
4592	+	* 8161600: Garbage retention when source CompletableFutures are never completed
4593	+	*
4594	+	* As of 2016-07, fails with OOME:
4595	+	* ant -Dvmoptions=-Xmx8m -Djsr166.expensiveTests=true -Djsr166.tckTestClass=CompletableFutureTest -Djsr166.methodFilter=testToCompletableFutureGarbageRetention tck
4596	+	*/
4597	+	public void testToCompletableFutureGarbageRetention() throws Throwable {
4598	+	final int n = expensiveTests ? 900_000 : 10;
4599	+	CompletableFuture<Integer> neverCompleted = new CompletableFuture<>();
4600	+	CompletionStage minimal = neverCompleted.minimalCompletionStage();
4601	+	for (int i = 0; i < n; i++)
4602	+	assertTrue(minimal.toCompletableFuture().cancel(true));
4603	+	}
4604	+
4605	+	//     static <U> U join(CompletionStage<U> stage) {
4606	+	//         CompletableFuture<U> f = new CompletableFuture<>();
4607	+	//         stage.whenComplete((v, ex) -> {
4608	+	//             if (ex != null) f.completeExceptionally(ex); else f.complete(v);
4609	+	//         });
4610	+	//         return f.join();
4611	+	//     }
4612	+
4613	+	//     static <U> boolean isDone(CompletionStage<U> stage) {
4614	+	//         CompletableFuture<U> f = new CompletableFuture<>();
4615	+	//         stage.whenComplete((v, ex) -> {
4616	+	//             if (ex != null) f.completeExceptionally(ex); else f.complete(v);
4617	+	//         });
4618	+	//         return f.isDone();
4619	+	//     }
4620	+
4621	+	//     static <U> U join2(CompletionStage<U> stage) {
4622	+	//         return stage.toCompletableFuture().copy().join();
4623	+	//     }
4624	+
4625	+	//     static <U> boolean isDone2(CompletionStage<U> stage) {
4626	+	//         return stage.toCompletableFuture().copy().isDone();
4627	+	//     }
4628	+
4629	+	// For testing default implementations
4630	+	// Only non-default interface methods defined.
4631	+	static final class DelegatedCompletionStage<T> implements CompletionStage<T> {
4632	+	final CompletableFuture<T> cf;
4633	+	DelegatedCompletionStage(CompletableFuture<T> cf) { this.cf = cf; }
4634	+	public CompletableFuture<T> toCompletableFuture() {
4635	+	return cf; }
4636	+	public CompletionStage<Void> thenRun
4637	+	(Runnable action) {
4638	+	return cf.thenRun(action); }
4639	+	public CompletionStage<Void> thenRunAsync
4640	+	(Runnable action) {
4641	+	return cf.thenRunAsync(action); }
4642	+	public CompletionStage<Void> thenRunAsync
4643	+	(Runnable action,
4644	+	Executor executor) {
4645	+	return cf.thenRunAsync(action, executor); }
4646	+	public CompletionStage<Void> thenAccept
4647	+	(Consumer<? super T> action) {
4648	+	return cf.thenAccept(action); }
4649	+	public CompletionStage<Void> thenAcceptAsync
4650	+	(Consumer<? super T> action) {
4651	+	return cf.thenAcceptAsync(action); }
4652	+	public CompletionStage<Void> thenAcceptAsync
4653	+	(Consumer<? super T> action,
4654	+	Executor executor) {
4655	+	return cf.thenAcceptAsync(action, executor); }
4656	+	public <U> CompletionStage<U> thenApply
4657	+	(Function<? super T,? extends U> a) {
4658	+	return cf.thenApply(a); }
4659	+	public <U> CompletionStage<U> thenApplyAsync
4660	+	(Function<? super T,? extends U> fn) {
4661	+	return cf.thenApplyAsync(fn); }
4662	+	public <U> CompletionStage<U> thenApplyAsync
4663	+	(Function<? super T,? extends U> fn,
4664	+	Executor executor) {
4665	+	return cf.thenApplyAsync(fn, executor); }
4666	+	public <U,V> CompletionStage<V> thenCombine
4667	+	(CompletionStage<? extends U> other,
4668	+	BiFunction<? super T,? super U,? extends V> fn) {
4669	+	return cf.thenCombine(other, fn); }
4670	+	public <U,V> CompletionStage<V> thenCombineAsync
4671	+	(CompletionStage<? extends U> other,
4672	+	BiFunction<? super T,? super U,? extends V> fn) {
4673	+	return cf.thenCombineAsync(other, fn); }
4674	+	public <U,V> CompletionStage<V> thenCombineAsync
4675	+	(CompletionStage<? extends U> other,
4676	+	BiFunction<? super T,? super U,? extends V> fn,
4677	+	Executor executor) {
4678	+	return cf.thenCombineAsync(other, fn, executor); }
4679	+	public <U> CompletionStage<Void> thenAcceptBoth
4680	+	(CompletionStage<? extends U> other,
4681	+	BiConsumer<? super T, ? super U> action) {
4682	+	return cf.thenAcceptBoth(other, action); }
4683	+	public <U> CompletionStage<Void> thenAcceptBothAsync
4684	+	(CompletionStage<? extends U> other,
4685	+	BiConsumer<? super T, ? super U> action) {
4686	+	return cf.thenAcceptBothAsync(other, action); }
4687	+	public <U> CompletionStage<Void> thenAcceptBothAsync
4688	+	(CompletionStage<? extends U> other,
4689	+	BiConsumer<? super T, ? super U> action,
4690	+	Executor executor) {
4691	+	return cf.thenAcceptBothAsync(other, action, executor); }
4692	+	public CompletionStage<Void> runAfterBoth
4693	+	(CompletionStage<?> other,
4694	+	Runnable action) {
4695	+	return cf.runAfterBoth(other, action); }
4696	+	public CompletionStage<Void> runAfterBothAsync
4697	+	(CompletionStage<?> other,
4698	+	Runnable action) {
4699	+	return cf.runAfterBothAsync(other, action); }
4700	+	public CompletionStage<Void> runAfterBothAsync
4701	+	(CompletionStage<?> other,
4702	+	Runnable action,
4703	+	Executor executor) {
4704	+	return cf.runAfterBothAsync(other, action, executor); }
4705	+	public <U> CompletionStage<U> applyToEither
4706	+	(CompletionStage<? extends T> other,
4707	+	Function<? super T, U> fn) {
4708	+	return cf.applyToEither(other, fn); }
4709	+	public <U> CompletionStage<U> applyToEitherAsync
4710	+	(CompletionStage<? extends T> other,
4711	+	Function<? super T, U> fn) {
4712	+	return cf.applyToEitherAsync(other, fn); }
4713	+	public <U> CompletionStage<U> applyToEitherAsync
4714	+	(CompletionStage<? extends T> other,
4715	+	Function<? super T, U> fn,
4716	+	Executor executor) {
4717	+	return cf.applyToEitherAsync(other, fn, executor); }
4718	+	public CompletionStage<Void> acceptEither
4719	+	(CompletionStage<? extends T> other,
4720	+	Consumer<? super T> action) {
4721	+	return cf.acceptEither(other, action); }
4722	+	public CompletionStage<Void> acceptEitherAsync
4723	+	(CompletionStage<? extends T> other,
4724	+	Consumer<? super T> action) {
4725	+	return cf.acceptEitherAsync(other, action); }
4726	+	public CompletionStage<Void> acceptEitherAsync
4727	+	(CompletionStage<? extends T> other,
4728	+	Consumer<? super T> action,
4729	+	Executor executor) {
4730	+	return cf.acceptEitherAsync(other, action, executor); }
4731	+	public CompletionStage<Void> runAfterEither
4732	+	(CompletionStage<?> other,
4733	+	Runnable action) {
4734	+	return cf.runAfterEither(other, action); }
4735	+	public CompletionStage<Void> runAfterEitherAsync
4736	+	(CompletionStage<?> other,
4737	+	Runnable action) {
4738	+	return cf.runAfterEitherAsync(other, action); }
4739	+	public CompletionStage<Void> runAfterEitherAsync
4740	+	(CompletionStage<?> other,
4741	+	Runnable action,
4742	+	Executor executor) {
4743	+	return cf.runAfterEitherAsync(other, action, executor); }
4744	+	public <U> CompletionStage<U> thenCompose
4745	+	(Function<? super T, ? extends CompletionStage<U>> fn) {
4746	+	return cf.thenCompose(fn); }
4747	+	public <U> CompletionStage<U> thenComposeAsync
4748	+	(Function<? super T, ? extends CompletionStage<U>> fn) {
4749	+	return cf.thenComposeAsync(fn); }
4750	+	public <U> CompletionStage<U> thenComposeAsync
4751	+	(Function<? super T, ? extends CompletionStage<U>> fn,
4752	+	Executor executor) {
4753	+	return cf.thenComposeAsync(fn, executor); }
4754	+	public <U> CompletionStage<U> handle
4755	+	(BiFunction<? super T, Throwable, ? extends U> fn) {
4756	+	return cf.handle(fn); }
4757	+	public <U> CompletionStage<U> handleAsync
4758	+	(BiFunction<? super T, Throwable, ? extends U> fn) {
4759	+	return cf.handleAsync(fn); }
4760	+	public <U> CompletionStage<U> handleAsync
4761	+	(BiFunction<? super T, Throwable, ? extends U> fn,
4762	+	Executor executor) {
4763	+	return cf.handleAsync(fn, executor); }
4764	+	public CompletionStage<T> whenComplete
4765	+	(BiConsumer<? super T, ? super Throwable> action) {
4766	+	return cf.whenComplete(action); }
4767	+	public CompletionStage<T> whenCompleteAsync
4768	+	(BiConsumer<? super T, ? super Throwable> action) {
4769	+	return cf.whenCompleteAsync(action); }
4770	+	public CompletionStage<T> whenCompleteAsync
4771	+	(BiConsumer<? super T, ? super Throwable> action,
4772	+	Executor executor) {
4773	+	return cf.whenCompleteAsync(action, executor); }
4774	+	public CompletionStage<T> exceptionally
4775	+	(Function<Throwable, ? extends T> fn) {
4776	+	return cf.exceptionally(fn); }
4777	+	}
4778	+
4779	+	/**
4780	+	* default-implemented exceptionallyAsync action is not invoked when
4781	+	* source completes normally, and source result is propagated
4782	+	*/
4783	+	public void testDefaultExceptionallyAsync_normalCompletion() {
4784	+	for (boolean createIncomplete : new boolean[] { true, false })
4785	+	for (Integer v1 : new Integer[] { 1, null })
4786	+	{
4787	+	final CompletableFuture<Integer> f = new CompletableFuture<>();
4788	+	final DelegatedCompletionStage<Integer> d =
4789	+	new DelegatedCompletionStage<Integer>(f);
4790	+	if (!createIncomplete) assertTrue(f.complete(v1));
4791	+	final CompletionStage<Integer> g = d.exceptionallyAsync
4792	+	((Throwable t) -> {
4793	+	threadFail("should not be called");
4794	+	return null;            // unreached
4795	+	});
4796	+	if (createIncomplete) assertTrue(f.complete(v1));
4797	+
4798	+	checkCompletedNormally(g.toCompletableFuture(), v1);
4799	+	}}
4800	+
4801	+	/**
4802	+	* default-implemented exceptionallyAsync action completes with
4803	+	* function value on source exception
4804	+	*/
4805	+	public void testDefaultExceptionallyAsync_exceptionalCompletion() {
4806	+	for (boolean createIncomplete : new boolean[] { true, false })
4807	+	for (Integer v1 : new Integer[] { 1, null })
4808	+	{
4809	+	final AtomicInteger a = new AtomicInteger(0);
4810	+	final CFException ex = new CFException();
4811	+	final CompletableFuture<Integer> f = new CompletableFuture<>();
4812	+	final DelegatedCompletionStage<Integer> d =
4813	+	new DelegatedCompletionStage<Integer>(f);
4814	+	if (!createIncomplete) f.completeExceptionally(ex);
4815	+	final CompletionStage<Integer> g = d.exceptionallyAsync
4816	+	((Throwable t) -> {
4817	+	threadAssertSame(t, ex);
4818	+	a.getAndIncrement();
4819	+	return v1;
4820	+	});
4821	+	if (createIncomplete) f.completeExceptionally(ex);
4822	+
4823	+	checkCompletedNormally(g.toCompletableFuture(), v1);
4824	+	assertEquals(1, a.get());
4825	+	}}
4826	+
4827	+	/**
4828	+	* Under default implementation, if an "exceptionally action"
4829	+	* throws an exception, it completes exceptionally with that
4830	+	* exception
4831	+	*/
4832	+	public void testDefaultExceptionallyAsync_exceptionalCompletionActionFailed() {
4833	+	for (boolean createIncomplete : new boolean[] { true, false })
4834	+	{
4835	+	final AtomicInteger a = new AtomicInteger(0);
4836	+	final CFException ex1 = new CFException();
4837	+	final CFException ex2 = new CFException();
4838	+	final CompletableFuture<Integer> f = new CompletableFuture<>();
4839	+	final DelegatedCompletionStage<Integer> d =
4840	+	new DelegatedCompletionStage<Integer>(f);
4841	+	if (!createIncomplete) f.completeExceptionally(ex1);
4842	+	final CompletionStage<Integer> g = d.exceptionallyAsync
4843	+	((Throwable t) -> {
4844	+	threadAssertSame(t, ex1);
4845	+	a.getAndIncrement();
4846	+	throw ex2;
4847	+	});
4848	+	if (createIncomplete) f.completeExceptionally(ex1);
4849	+
4850	+	checkCompletedWithWrappedException(g.toCompletableFuture(), ex2);
4851	+	checkCompletedExceptionally(f, ex1);
4852	+	checkCompletedExceptionally(d.toCompletableFuture(), ex1);
4853	+	assertEquals(1, a.get());
4854	+	}}
4855	+
4856	+	/**
4857	+	* default exceptionallyCompose result completes normally after normal
4858	+	* completion of source
4859	+	*/
4860	+	public void testDefaultExceptionallyCompose_normalCompletion() {
4861	+	for (boolean createIncomplete : new boolean[] { true, false })
4862	+	for (Integer v1 : new Integer[] { 1, null })
4863	+	{
4864	+	final CompletableFuture<Integer> f = new CompletableFuture<>();
4865	+	final ExceptionalCompletableFutureFunction r =
4866	+	new ExceptionalCompletableFutureFunction(ExecutionMode.SYNC);
4867	+	final DelegatedCompletionStage<Integer> d =
4868	+	new DelegatedCompletionStage<Integer>(f);
4869	+	if (!createIncomplete) assertTrue(f.complete(v1));
4870	+	final CompletionStage<Integer> g = d.exceptionallyCompose(r);
4871	+	if (createIncomplete) assertTrue(f.complete(v1));
4872	+
4873	+	checkCompletedNormally(f, v1);
4874	+	checkCompletedNormally(g.toCompletableFuture(), v1);
4875	+	r.assertNotInvoked();
4876	+	}}
4877	+
4878	+	/**
4879	+	* default-implemented exceptionallyCompose result completes
4880	+	* normally after exceptional completion of source
4881	+	*/
4882	+	public void testDefaultExceptionallyCompose_exceptionalCompletion() {
4883	+	for (boolean createIncomplete : new boolean[] { true, false })
4884	+	{
4885	+	final CFException ex = new CFException();
4886	+	final ExceptionalCompletableFutureFunction r =
4887	+	new ExceptionalCompletableFutureFunction(ExecutionMode.SYNC);
4888	+	final CompletableFuture<Integer> f = new CompletableFuture<>();
4889	+	final DelegatedCompletionStage<Integer> d =
4890	+	new DelegatedCompletionStage<Integer>(f);
4891	+	if (!createIncomplete) f.completeExceptionally(ex);
4892	+	final CompletionStage<Integer> g = d.exceptionallyCompose(r);
4893	+	if (createIncomplete) f.completeExceptionally(ex);
4894	+
4895	+	checkCompletedExceptionally(f, ex);
4896	+	checkCompletedNormally(g.toCompletableFuture(), r.value);
4897	+	r.assertInvoked();
4898	+	}}
4899	+
4900	+	/**
4901	+	* default-implemented exceptionallyCompose completes
4902	+	* exceptionally on exception if action does
4903	+	*/
4904	+	public void testDefaultExceptionallyCompose_actionFailed() {
4905	+	for (boolean createIncomplete : new boolean[] { true, false })
4906	+	for (Integer v1 : new Integer[] { 1, null })
4907	+	{
4908	+	final CFException ex = new CFException();
4909	+	final CompletableFuture<Integer> f = new CompletableFuture<>();
4910	+	final FailingExceptionalCompletableFutureFunction r
4911	+	= new FailingExceptionalCompletableFutureFunction(ExecutionMode.SYNC);
4912	+	final DelegatedCompletionStage<Integer> d =
4913	+	new DelegatedCompletionStage<Integer>(f);
4914	+	if (!createIncomplete) f.completeExceptionally(ex);
4915	+	final CompletionStage<Integer> g = d.exceptionallyCompose(r);
4916	+	if (createIncomplete) f.completeExceptionally(ex);
4917	+
4918	+	checkCompletedExceptionally(f, ex);
4919	+	checkCompletedWithWrappedException(g.toCompletableFuture(), r.ex);
4920	+	r.assertInvoked();
4921	+	}}
4922	+
4923	+	/**
4924	+	* default exceptionallyComposeAsync result completes normally after normal
4925	+	* completion of source
4926	+	*/
4927	+	public void testDefaultExceptionallyComposeAsync_normalCompletion() {
4928	+	for (boolean createIncomplete : new boolean[] { true, false })
4929	+	for (Integer v1 : new Integer[] { 1, null })
4930	+	{
4931	+	final CompletableFuture<Integer> f = new CompletableFuture<>();
4932	+	final ExceptionalCompletableFutureFunction r =
4933	+	new ExceptionalCompletableFutureFunction(ExecutionMode.ASYNC);
4934	+	final DelegatedCompletionStage<Integer> d =
4935	+	new DelegatedCompletionStage<Integer>(f);
4936	+	if (!createIncomplete) assertTrue(f.complete(v1));
4937	+	final CompletionStage<Integer> g = d.exceptionallyComposeAsync(r);
4938	+	if (createIncomplete) assertTrue(f.complete(v1));
4939	+
4940	+	checkCompletedNormally(f, v1);
4941	+	checkCompletedNormally(g.toCompletableFuture(), v1);
4942	+	r.assertNotInvoked();
4943	+	}}
4944	+
4945	+	/**
4946	+	* default-implemented exceptionallyComposeAsync result completes
4947	+	* normally after exceptional completion of source
4948	+	*/
4949	+	public void testDefaultExceptionallyComposeAsync_exceptionalCompletion() {
4950	+	for (boolean createIncomplete : new boolean[] { true, false })
4951	+	{
4952	+	final CFException ex = new CFException();
4953	+	final ExceptionalCompletableFutureFunction r =
4954	+	new ExceptionalCompletableFutureFunction(ExecutionMode.ASYNC);
4955	+	final CompletableFuture<Integer> f = new CompletableFuture<>();
4956	+	final DelegatedCompletionStage<Integer> d =
4957	+	new DelegatedCompletionStage<Integer>(f);
4958	+	if (!createIncomplete) f.completeExceptionally(ex);
4959	+	final CompletionStage<Integer> g = d.exceptionallyComposeAsync(r);
4960	+	if (createIncomplete) f.completeExceptionally(ex);
4961	+
4962	+	checkCompletedExceptionally(f, ex);
4963	+	checkCompletedNormally(g.toCompletableFuture(), r.value);
4964	+	r.assertInvoked();
4965	+	}}
4966	+
4967	+	/**
4968	+	* default-implemented exceptionallyComposeAsync completes
4969	+	* exceptionally on exception if action does
4970	+	*/
4971	+	public void testDefaultExceptionallyComposeAsync_actionFailed() {
4972	+	for (boolean createIncomplete : new boolean[] { true, false })
4973	+	for (Integer v1 : new Integer[] { 1, null })
4974	+	{
4975	+	final CFException ex = new CFException();
4976	+	final CompletableFuture<Integer> f = new CompletableFuture<>();
4977	+	final FailingExceptionalCompletableFutureFunction r
4978	+	= new FailingExceptionalCompletableFutureFunction(ExecutionMode.ASYNC);
4979	+	final DelegatedCompletionStage<Integer> d =
4980	+	new DelegatedCompletionStage<Integer>(f);
4981	+	if (!createIncomplete) f.completeExceptionally(ex);
4982	+	final CompletionStage<Integer> g = d.exceptionallyComposeAsync(r);
4983	+	if (createIncomplete) f.completeExceptionally(ex);
4984	+
4985	+	checkCompletedExceptionally(f, ex);
4986	+	checkCompletedWithWrappedException(g.toCompletableFuture(), r.ex);
4987	+	r.assertInvoked();
4988	+	}}
4989	+
4990	+
4991	+	/**
4992	+	* default exceptionallyComposeAsync result completes normally after normal
4993	+	* completion of source
4994	+	*/
4995	+	public void testDefaultExceptionallyComposeAsyncExecutor_normalCompletion() {
4996	+	for (boolean createIncomplete : new boolean[] { true, false })
4997	+	for (Integer v1 : new Integer[] { 1, null })
4998	+	{
4999	+	final CompletableFuture<Integer> f = new CompletableFuture<>();
5000	+	final ExceptionalCompletableFutureFunction r =
5001	+	new ExceptionalCompletableFutureFunction(ExecutionMode.EXECUTOR);
5002	+	final DelegatedCompletionStage<Integer> d =
5003	+	new DelegatedCompletionStage<Integer>(f);
5004	+	if (!createIncomplete) assertTrue(f.complete(v1));
5005	+	final CompletionStage<Integer> g = d.exceptionallyComposeAsync(r, new ThreadExecutor());
5006	+	if (createIncomplete) assertTrue(f.complete(v1));
5007	+
5008	+	checkCompletedNormally(f, v1);
5009	+	checkCompletedNormally(g.toCompletableFuture(), v1);
5010	+	r.assertNotInvoked();
5011	+	}}
5012	+
5013	+	/**
5014	+	* default-implemented exceptionallyComposeAsync result completes
5015	+	* normally after exceptional completion of source
5016	+	*/
5017	+	public void testDefaultExceptionallyComposeAsyncExecutor_exceptionalCompletion() {
5018	+	for (boolean createIncomplete : new boolean[] { true, false })
5019	+	{
5020	+	final CFException ex = new CFException();
5021	+	final ExceptionalCompletableFutureFunction r =
5022	+	new ExceptionalCompletableFutureFunction(ExecutionMode.EXECUTOR);
5023	+	final CompletableFuture<Integer> f = new CompletableFuture<>();
5024	+	final DelegatedCompletionStage<Integer> d =
5025	+	new DelegatedCompletionStage<Integer>(f);
5026	+	if (!createIncomplete) f.completeExceptionally(ex);
5027	+	final CompletionStage<Integer> g = d.exceptionallyComposeAsync(r, new ThreadExecutor());
5028	+	if (createIncomplete) f.completeExceptionally(ex);
5029	+
5030	+	checkCompletedExceptionally(f, ex);
5031	+	checkCompletedNormally(g.toCompletableFuture(), r.value);
5032	+	r.assertInvoked();
5033	+	}}
5034	+
5035	+	/**
5036	+	* default-implemented exceptionallyComposeAsync completes
5037	+	* exceptionally on exception if action does
5038	+	*/
5039	+	public void testDefaultExceptionallyComposeAsyncExecutor_actionFailed() {
5040	+	for (boolean createIncomplete : new boolean[] { true, false })
5041	+	for (Integer v1 : new Integer[] { 1, null })
5042	+	{
5043	+	final CFException ex = new CFException();
5044	+	final CompletableFuture<Integer> f = new CompletableFuture<>();
5045	+	final FailingExceptionalCompletableFutureFunction r
5046	+	= new FailingExceptionalCompletableFutureFunction(ExecutionMode.EXECUTOR);
5047	+	final DelegatedCompletionStage<Integer> d =
5048	+	new DelegatedCompletionStage<Integer>(f);
5049	+	if (!createIncomplete) f.completeExceptionally(ex);
5050	+	final CompletionStage<Integer> g = d.exceptionallyComposeAsync(r, new ThreadExecutor());
5051	+	if (createIncomplete) f.completeExceptionally(ex);
5052	+
5053	+	checkCompletedExceptionally(f, ex);
5054	+	checkCompletedWithWrappedException(g.toCompletableFuture(), r.ex);
5055	+	r.assertInvoked();
5056	+	}}
5057	+
5058		}

Diff Legend

–	Removed lines
+	Added lines
<	Changed lines
>	Changed lines