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

Comparing jsr166/src/test/tck/CompletableFutureTest.java (file contents):
Revision 1.116 by jsr166, Fri Sep 4 20:57:10 2015 UTC vs.
Revision 1.199 by dl, Thu Sep 20 00:01:22 2018 UTC

#	Line 7 | Line 7
7
8		import static java.util.concurrent.TimeUnit.MILLISECONDS;
9		import static java.util.concurrent.TimeUnit.SECONDS;
10	+	import static java.util.concurrent.CompletableFuture.completedFuture;
11	+	import static java.util.concurrent.CompletableFuture.failedFuture;
12	+
13	+	import java.lang.reflect.Method;
14	+	import java.lang.reflect.Modifier;
15	+
16	+	import java.util.stream.Collectors;
17	+	import java.util.stream.Stream;
18
19		import java.util.ArrayList;
20	+	import java.util.Arrays;
21		import java.util.List;
22		import java.util.Objects;
23	+	import java.util.Set;
24		import java.util.concurrent.Callable;
25		import java.util.concurrent.CancellationException;
26		import java.util.concurrent.CompletableFuture;
#	Line 20 | Line 30 | import java.util.concurrent.ExecutionExc
30		import java.util.concurrent.Executor;
31		import java.util.concurrent.ForkJoinPool;
32		import java.util.concurrent.ForkJoinTask;
33	+	import java.util.concurrent.RejectedExecutionException;
34		import java.util.concurrent.TimeoutException;
24	–	import java.util.concurrent.TimeUnit;
35		import java.util.concurrent.atomic.AtomicInteger;
36		import java.util.concurrent.atomic.AtomicReference;
37		import java.util.function.BiConsumer;
38		import java.util.function.BiFunction;
39		import java.util.function.Consumer;
40		import java.util.function.Function;
41	+	import java.util.function.Predicate;
42		import java.util.function.Supplier;
43
44		import junit.framework.Test;
#	Line 47 | 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());
67	<	} catch (Throwable fail) { threadUnexpectedException(fail); }
68	<	try {
69	<	assertEquals(value, f.getNow(null));
70	<	} catch (Throwable fail) { threadUnexpectedException(fail); }
71	<	try {
72	<	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); }
89	<	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);
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 {
98	<	f.getNow(null);
99	<	shouldThrow();
100	<	} catch (CompletionException success) {
101	<	assertTrue(success.getCause() instanceof CFException);
102	<	}
103	<	try {
104	<	f.get();
105	<	shouldThrow();
106	<	} catch (ExecutionException success) {
107	<	assertTrue(success.getCause() instanceof CFException);
108	<	} catch (Throwable fail) { threadUnexpectedException(fail); }
109	<	assertTrue(f.isDone());
110	<	assertFalse(f.isCancelled());
111	<	assertTrue(f.toString().contains("[Completed exceptionally]"));
112	<	}
113	>	checker.accept(cause);
114
114	–	<U> void checkCompletedExceptionallyWithRootCause(CompletableFuture<U> f,
115	–	Throwable ex) {
115		long startTime = System.nanoTime();
117	–	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
145	–	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 checkCompletedExceptionallyWithTimeout(CompletableFuture<U> f) {
152	<	long startTime = System.nanoTime();
153	<	long timeoutMillis = LONG_DELAY_MS;
154	<	try {
154	<	f.get(timeoutMillis, MILLISECONDS);
155	<	shouldThrow();
156	<	} catch (ExecutionException ex) {
157	<	assertTrue(ex.getCause() instanceof TimeoutException);
158	<	} catch (Throwable fail) { threadUnexpectedException(fail); }
159	<	assertTrue(millisElapsedSince(startTime) < timeoutMillis/2);
160	<
161	<	try {
162	<	f.join();
163	<	shouldThrow();
164	<	} catch (Throwable ex) {
165	<	assertTrue(ex.getCause() instanceof TimeoutException);
166	<	}
167	<
168	<	try {
169	<	f.getNow(null);
170	<	shouldThrow();
171	<	} catch (Throwable ex) {
172	<	assertTrue(ex.getCause() instanceof TimeoutException);
173	<	}
151	>	void checkCompletedWithWrappedCFException(CompletableFuture<?> f) {
152	>	checkCompletedExceptionally(f, true,
153	>	t -> assertTrue(t instanceof CFException));
154	>	}
155
156	<	try {
157	<	f.get();
158	<	shouldThrow();
159	<	} catch (ExecutionException ex) {
179	<	assertTrue(ex.getCause() instanceof TimeoutException);
180	<	} catch (Throwable fail) { threadUnexpectedException(fail); }
156	>	void checkCompletedWithWrappedCancellationException(CompletableFuture<?> f) {
157	>	checkCompletedExceptionally(f, true,
158	>	t -> assertTrue(t instanceof CancellationException));
159	>	}
160
161	<	assertTrue(f.isDone());
162	<	assertFalse(f.isCancelled());
163	<	assertTrue(f.toString().contains("[Completed exceptionally]"));
161	>	void checkCompletedWithTimeoutException(CompletableFuture<?> f) {
162	>	checkCompletedExceptionally(f, false,
163	>	t -> assertTrue(t instanceof TimeoutException));
164		}
165
166	<	<U> void checkCompletedWithWrappedException(CompletableFuture<U> f,
167	<	Throwable ex) {
168	<	checkCompletedExceptionallyWithRootCause(f, ex);
190	<	try {
191	<	CompletableFuture<Throwable> spy = f.handle
192	<	((U u, Throwable t) -> t);
193	<	assertTrue(spy.join() instanceof CompletionException);
194	<	assertSame(ex, spy.join().getCause());
195	<	} catch (Throwable fail) { threadUnexpectedException(fail); }
166	>	void checkCompletedWithWrappedException(CompletableFuture<?> f,
167	>	Throwable ex) {
168	>	checkCompletedExceptionally(f, true, t -> assertSame(t, ex));
169		}
170
171	<	<U> void checkCompletedExceptionally(CompletableFuture<U> f, Throwable ex) {
172	<	checkCompletedExceptionallyWithRootCause(f, ex);
200	<	try {
201	<	CompletableFuture<Throwable> spy = f.handle
202	<	((U u, Throwable t) -> t);
203	<	assertSame(ex, spy.join());
204	<	} catch (Throwable fail) { threadUnexpectedException(fail); }
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();
209	–	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 227 | Line 194 | public class CompletableFutureTest exten
194		shouldThrow();
195		} catch (CancellationException success) {
196		} catch (Throwable fail) { threadUnexpectedException(fail); }
230	–	assertTrue(f.isDone());
231	–	assertTrue(f.isCompletedExceptionally());
232	–	assertTrue(f.isCancelled());
233	–	assertTrue(f.toString().contains("[Completed exceptionally]"));
234	–	}
197
198	<	void checkCompletedWithWrappedCancellationException(CompletableFuture<?> f) {
237	<	long startTime = System.nanoTime();
238	<	long timeoutMillis = LONG_DELAY_MS;
239	<	try {
240	<	f.get(timeoutMillis, MILLISECONDS);
241	<	shouldThrow();
242	<	} catch (ExecutionException success) {
243	<	assertTrue(success.getCause() instanceof CancellationException);
244	<	} catch (Throwable fail) { threadUnexpectedException(fail); }
245	<	assertTrue(millisElapsedSince(startTime) < timeoutMillis/2);
198	>	assertTrue(exceptionalCompletion(f) instanceof CancellationException);
199
247	–	try {
248	–	f.join();
249	–	shouldThrow();
250	–	} catch (CompletionException success) {
251	–	assertTrue(success.getCause() instanceof CancellationException);
252	–	}
253	–	try {
254	–	f.getNow(null);
255	–	shouldThrow();
256	–	} catch (CompletionException success) {
257	–	assertTrue(success.getCause() instanceof CancellationException);
258	–	}
259	–	try {
260	–	f.get();
261	–	shouldThrow();
262	–	} catch (ExecutionException success) {
263	–	assertTrue(success.getCause() instanceof CancellationException);
264	–	} catch (Throwable fail) { threadUnexpectedException(fail); }
200		assertTrue(f.isDone());
266	–	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 364 | 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 401 | 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 429 | 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 441 | 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 450 | 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 469 | 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 479 | 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 497 | 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 507 | 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 517 | 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	<	class CompletableFutureInc extends CheckedIntegerAction
547	>	static class CompletableFutureInc extends CheckedIntegerAction
548		implements Function<Integer, CompletableFuture<Integer>>
549		{
550		CompletableFutureInc(ExecutionMode m) { super(m); }
#	Line 599 | Line 557 | public class CompletableFutureTest exten
557		}
558		}
559
560	<	class FailingCompletableFutureFunction extends CheckedIntegerAction
560	>	static class FailingExceptionalCompletableFutureFunction extends CheckedAction
561	>	implements Function<Throwable, CompletableFuture<Integer>>
562	>	{
563	>	final CFException ex;
564	>	FailingExceptionalCompletableFutureFunction(ExecutionMode m) { super(m); ex = new CFException(); }
565	>	public CompletableFuture<Integer> apply(Throwable x) {
566	>	invoked();
567	>	throw ex;
568	>	}
569	>	}
570	>
571	>	static class ExceptionalCompletableFutureFunction extends CheckedAction
572	>	implements Function<Throwable, CompletionStage<Integer>> {
573	>	final Integer value = 3;
574	>	ExceptionalCompletableFutureFunction(ExecutionMode m) { super(m); }
575	>	public CompletionStage<Integer> apply(Throwable x) {
576	>	invoked();
577	>	CompletableFuture<Integer> d = new CompletableFuture<Integer>();
578	>	d.complete(value);
579	>	return d;
580	>	}
581	>	}
582	>
583	>	static class FailingCompletableFutureFunction extends CheckedIntegerAction
584		implements Function<Integer, CompletableFuture<Integer>>
585		{
586	<	FailingCompletableFutureFunction(ExecutionMode m) { super(m); }
586	>	final CFException ex;
587	>	FailingCompletableFutureFunction(ExecutionMode m) { super(m); ex = new CFException(); }
588		public CompletableFuture<Integer> apply(Integer x) {
589		invoked();
590		value = x;
591	<	throw new CFException();
591	>	throw ex;
592	>	}
593	>	}
594	>
595	>	static class CountingRejectingExecutor implements Executor {
596	>	final RejectedExecutionException ex = new RejectedExecutionException();
597	>	final AtomicInteger count = new AtomicInteger(0);
598	>	public void execute(Runnable r) {
599	>	count.getAndIncrement();
600	>	throw ex;
601		}
602		}
603
#	Line 704 | Line 695 | public class CompletableFutureTest exten
695		Function<? super T,U> a) {
696		return f.applyToEither(g, a);
697		}
698	+	public <T> CompletableFuture<T> exceptionally
699	+	(CompletableFuture<T> f,
700	+	Function<Throwable, ? extends T> fn) {
701	+	return f.exceptionally(fn);
702	+	}
703	+	public <T> CompletableFuture<T> exceptionallyCompose
704	+	(CompletableFuture<T> f, Function<Throwable, ? extends CompletionStage<T>> fn) {
705	+	return f.exceptionallyCompose(fn);
706	+	}
707		},
708	–
708		ASYNC {
709		public void checkExecutionMode() {
710		assertEquals(defaultExecutorIsCommonPool,
#	Line 778 | Line 777 | public class CompletableFutureTest exten
777		Function<? super T,U> a) {
778		return f.applyToEitherAsync(g, a);
779		}
780	+	public <T> CompletableFuture<T> exceptionally
781	+	(CompletableFuture<T> f,
782	+	Function<Throwable, ? extends T> fn) {
783	+	return f.exceptionallyAsync(fn);
784	+	}
785	+
786	+	public <T> CompletableFuture<T> exceptionallyCompose
787	+	(CompletableFuture<T> f, Function<Throwable, ? extends CompletionStage<T>> fn) {
788	+	return f.exceptionallyComposeAsync(fn);
789	+	}
790	+
791		},
792
793		EXECUTOR {
#	Line 851 | Line 861 | public class CompletableFutureTest exten
861		Function<? super T,U> a) {
862		return f.applyToEitherAsync(g, a, new ThreadExecutor());
863		}
864	+	public <T> CompletableFuture<T> exceptionally
865	+	(CompletableFuture<T> f,
866	+	Function<Throwable, ? extends T> fn) {
867	+	return f.exceptionallyAsync(fn, new ThreadExecutor());
868	+	}
869	+	public <T> CompletableFuture<T> exceptionallyCompose
870	+	(CompletableFuture<T> f, Function<Throwable, ? extends CompletionStage<T>> fn) {
871	+	return f.exceptionallyComposeAsync(fn, new ThreadExecutor());
872	+	}
873	+
874		};
875
876		public abstract void checkExecutionMode();
#	Line 893 | Line 913 | public class CompletableFutureTest exten
913		(CompletableFuture<T> f,
914		CompletionStage<? extends T> g,
915		Function<? super T,U> a);
916	+	public abstract <T> CompletableFuture<T> exceptionally
917	+	(CompletableFuture<T> f,
918	+	Function<Throwable, ? extends T> fn);
919	+	public abstract <T> CompletableFuture<T> exceptionallyCompose
920	+	(CompletableFuture<T> f,
921	+	Function<Throwable, ? extends CompletionStage<T>> fn);
922		}
923
924		/**
#	Line 900 | Line 926 | public class CompletableFutureTest exten
926		* normally, and source result is propagated
927		*/
928		public void testExceptionally_normalCompletion() {
929	+	for (ExecutionMode m : ExecutionMode.values())
930		for (boolean createIncomplete : new boolean[] { true, false })
931		for (Integer v1 : new Integer[] { 1, null })
932		{
933		final AtomicInteger a = new AtomicInteger(0);
934		final CompletableFuture<Integer> f = new CompletableFuture<>();
935		if (!createIncomplete) assertTrue(f.complete(v1));
936	<	final CompletableFuture<Integer> g = f.exceptionally
937	<	((Throwable t) -> {
911	<	// Should not be called
936	>	final CompletableFuture<Integer> g = m.exceptionally
937	>	(f, (Throwable t) -> {
938		a.getAndIncrement();
939	<	throw new AssertionError();
939	>	threadFail("should not be called");
940	>	return null;            // unreached
941		});
942		if (createIncomplete) assertTrue(f.complete(v1));
943
#	Line 924 | Line 951 | public class CompletableFutureTest exten
951		* exception
952		*/
953		public void testExceptionally_exceptionalCompletion() {
954	+	for (ExecutionMode m : ExecutionMode.values())
955		for (boolean createIncomplete : new boolean[] { true, false })
956		for (Integer v1 : new Integer[] { 1, null })
957		{
#	Line 931 | Line 959 | public class CompletableFutureTest exten
959		final CFException ex = new CFException();
960		final CompletableFuture<Integer> f = new CompletableFuture<>();
961		if (!createIncomplete) f.completeExceptionally(ex);
962	<	final CompletableFuture<Integer> g = f.exceptionally
963	<	((Throwable t) -> {
964	<	ExecutionMode.SYNC.checkExecutionMode();
962	>	final CompletableFuture<Integer> g = m.exceptionally
963	>	(f, (Throwable t) -> {
964	>	m.checkExecutionMode();
965		threadAssertSame(t, ex);
966		a.getAndIncrement();
967		return v1;
#	Line 944 | Line 972 | public class CompletableFutureTest exten
972		assertEquals(1, a.get());
973		}}
974
975	+	/**
976	+	* If an "exceptionally action" throws an exception, it completes
977	+	* exceptionally with that exception
978	+	*/
979		public void testExceptionally_exceptionalCompletionActionFailed() {
980	+	for (ExecutionMode m : ExecutionMode.values())
981		for (boolean createIncomplete : new boolean[] { true, false })
982		{
983		final AtomicInteger a = new AtomicInteger(0);
#	Line 952 | Line 985 | public class CompletableFutureTest exten
985		final CFException ex2 = new CFException();
986		final CompletableFuture<Integer> f = new CompletableFuture<>();
987		if (!createIncomplete) f.completeExceptionally(ex1);
988	<	final CompletableFuture<Integer> g = f.exceptionally
989	<	((Throwable t) -> {
990	<	ExecutionMode.SYNC.checkExecutionMode();
988	>	final CompletableFuture<Integer> g = m.exceptionally
989	>	(f, (Throwable t) -> {
990	>	m.checkExecutionMode();
991		threadAssertSame(t, ex1);
992		a.getAndIncrement();
993		throw ex2;
#	Line 962 | Line 995 | public class CompletableFutureTest exten
995		if (createIncomplete) f.completeExceptionally(ex1);
996
997		checkCompletedWithWrappedException(g, ex2);
998	+	checkCompletedExceptionally(f, ex1);
999		assertEquals(1, a.get());
1000		}}
1001
#	Line 969 | Line 1003 | public class CompletableFutureTest exten
1003		* whenComplete action executes on normal completion, propagating
1004		* source result.
1005		*/
1006	<	public void testWhenComplete_normalCompletion1() {
1006	>	public void testWhenComplete_normalCompletion() {
1007		for (ExecutionMode m : ExecutionMode.values())
1008		for (boolean createIncomplete : new boolean[] { true, false })
1009		for (Integer v1 : new Integer[] { 1, null })
#	Line 979 | Line 1013 | public class CompletableFutureTest exten
1013		if (!createIncomplete) assertTrue(f.complete(v1));
1014		final CompletableFuture<Integer> g = m.whenComplete
1015		(f,
1016	<	(Integer x, Throwable t) -> {
1016	>	(Integer result, Throwable t) -> {
1017		m.checkExecutionMode();
1018	<	threadAssertSame(x, v1);
1018	>	threadAssertSame(result, v1);
1019		threadAssertNull(t);
1020		a.getAndIncrement();
1021		});
#	Line 1006 | Line 1040 | public class CompletableFutureTest exten
1040		if (!createIncomplete) f.completeExceptionally(ex);
1041		final CompletableFuture<Integer> g = m.whenComplete
1042		(f,
1043	<	(Integer x, Throwable t) -> {
1043	>	(Integer result, Throwable t) -> {
1044		m.checkExecutionMode();
1045	<	threadAssertNull(x);
1045	>	threadAssertNull(result);
1046		threadAssertSame(t, ex);
1047		a.getAndIncrement();
1048		});
#	Line 1033 | Line 1067 | public class CompletableFutureTest exten
1067		if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
1068		final CompletableFuture<Integer> g = m.whenComplete
1069		(f,
1070	<	(Integer x, Throwable t) -> {
1070	>	(Integer result, Throwable t) -> {
1071		m.checkExecutionMode();
1072	<	threadAssertNull(x);
1072	>	threadAssertNull(result);
1073		threadAssertTrue(t instanceof CancellationException);
1074		a.getAndIncrement();
1075		});
#	Line 1050 | Line 1084 | public class CompletableFutureTest exten
1084		* If a whenComplete action throws an exception when triggered by
1085		* a normal completion, it completes exceptionally
1086		*/
1087	<	public void testWhenComplete_actionFailed() {
1087	>	public void testWhenComplete_sourceCompletedNormallyActionFailed() {
1088		for (boolean createIncomplete : new boolean[] { true, false })
1089		for (ExecutionMode m : ExecutionMode.values())
1090		for (Integer v1 : new Integer[] { 1, null })
#	Line 1061 | Line 1095 | public class CompletableFutureTest exten
1095		if (!createIncomplete) assertTrue(f.complete(v1));
1096		final CompletableFuture<Integer> g = m.whenComplete
1097		(f,
1098	<	(Integer x, Throwable t) -> {
1098	>	(Integer result, Throwable t) -> {
1099		m.checkExecutionMode();
1100	<	threadAssertSame(x, v1);
1100	>	threadAssertSame(result, v1);
1101		threadAssertNull(t);
1102		a.getAndIncrement();
1103		throw ex;
#	Line 1078 | Line 1112 | public class CompletableFutureTest exten
1112		/**
1113		* If a whenComplete action throws an exception when triggered by
1114		* a source completion that also throws an exception, the source
1115	<	* exception takes precedence.
1115	>	* exception takes precedence (unlike handle)
1116		*/
1117	<	public void testWhenComplete_actionFailedSourceFailed() {
1117	>	public void testWhenComplete_sourceFailedActionFailed() {
1118		for (boolean createIncomplete : new boolean[] { true, false })
1119		for (ExecutionMode m : ExecutionMode.values())
1120		{
#	Line 1092 | Line 1126 | public class CompletableFutureTest exten
1126		if (!createIncomplete) f.completeExceptionally(ex1);
1127		final CompletableFuture<Integer> g = m.whenComplete
1128		(f,
1129	<	(Integer x, Throwable t) -> {
1129	>	(Integer result, Throwable t) -> {
1130		m.checkExecutionMode();
1131		threadAssertSame(t, ex1);
1132	<	threadAssertNull(x);
1132	>	threadAssertNull(result);
1133		a.getAndIncrement();
1134		throw ex2;
1135		});
#	Line 1103 | Line 1137 | public class CompletableFutureTest exten
1137
1138		checkCompletedWithWrappedException(g, ex1);
1139		checkCompletedExceptionally(f, ex1);
1140	+	if (testImplementationDetails) {
1141	+	assertEquals(1, ex1.getSuppressed().length);
1142	+	assertSame(ex2, ex1.getSuppressed()[0]);
1143	+	}
1144		assertEquals(1, a.get());
1145		}}
1146
#	Line 1120 | Line 1158 | public class CompletableFutureTest exten
1158		if (!createIncomplete) assertTrue(f.complete(v1));
1159		final CompletableFuture<Integer> g = m.handle
1160		(f,
1161	<	(Integer x, Throwable t) -> {
1161	>	(Integer result, Throwable t) -> {
1162		m.checkExecutionMode();
1163	<	threadAssertSame(x, v1);
1163	>	threadAssertSame(result, v1);
1164		threadAssertNull(t);
1165		a.getAndIncrement();
1166		return inc(v1);
#	Line 1149 | Line 1187 | public class CompletableFutureTest exten
1187		if (!createIncomplete) f.completeExceptionally(ex);
1188		final CompletableFuture<Integer> g = m.handle
1189		(f,
1190	<	(Integer x, Throwable t) -> {
1190	>	(Integer result, Throwable t) -> {
1191		m.checkExecutionMode();
1192	<	threadAssertNull(x);
1192	>	threadAssertNull(result);
1193		threadAssertSame(t, ex);
1194		a.getAndIncrement();
1195		return v1;
#	Line 1178 | Line 1216 | public class CompletableFutureTest exten
1216		if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
1217		final CompletableFuture<Integer> g = m.handle
1218		(f,
1219	<	(Integer x, Throwable t) -> {
1219	>	(Integer result, Throwable t) -> {
1220		m.checkExecutionMode();
1221	<	threadAssertNull(x);
1221	>	threadAssertNull(result);
1222		threadAssertTrue(t instanceof CancellationException);
1223		a.getAndIncrement();
1224		return v1;
#	Line 1193 | Line 1231 | public class CompletableFutureTest exten
1231		}}
1232
1233		/**
1234	<	* handle result completes exceptionally if action does
1234	>	* If a "handle action" throws an exception when triggered by
1235	>	* a normal completion, it completes exceptionally
1236		*/
1237	<	public void testHandle_sourceFailedActionFailed() {
1237	>	public void testHandle_sourceCompletedNormallyActionFailed() {
1238		for (ExecutionMode m : ExecutionMode.values())
1239		for (boolean createIncomplete : new boolean[] { true, false })
1240	+	for (Integer v1 : new Integer[] { 1, null })
1241		{
1242		final CompletableFuture<Integer> f = new CompletableFuture<>();
1243		final AtomicInteger a = new AtomicInteger(0);
1244	<	final CFException ex1 = new CFException();
1245	<	final CFException ex2 = new CFException();
1206	<	if (!createIncomplete) f.completeExceptionally(ex1);
1244	>	final CFException ex = new CFException();
1245	>	if (!createIncomplete) assertTrue(f.complete(v1));
1246		final CompletableFuture<Integer> g = m.handle
1247		(f,
1248	<	(Integer x, Throwable t) -> {
1248	>	(Integer result, Throwable t) -> {
1249		m.checkExecutionMode();
1250	<	threadAssertNull(x);
1251	<	threadAssertSame(ex1, t);
1250	>	threadAssertSame(result, v1);
1251	>	threadAssertNull(t);
1252		a.getAndIncrement();
1253	<	throw ex2;
1253	>	throw ex;
1254		});
1255	<	if (createIncomplete) f.completeExceptionally(ex1);
1255	>	if (createIncomplete) assertTrue(f.complete(v1));
1256
1257	<	checkCompletedWithWrappedException(g, ex2);
1258	<	checkCompletedExceptionally(f, ex1);
1257	>	checkCompletedWithWrappedException(g, ex);
1258	>	checkCompletedNormally(f, v1);
1259		assertEquals(1, a.get());
1260		}}
1261
1262	<	public void testHandle_sourceCompletedNormallyActionFailed() {
1263	<	for (ExecutionMode m : ExecutionMode.values())
1262	>	/**
1263	>	* If a "handle action" throws an exception when triggered by
1264	>	* a source completion that also throws an exception, the action
1265	>	* exception takes precedence (unlike whenComplete)
1266	>	*/
1267	>	public void testHandle_sourceFailedActionFailed() {
1268		for (boolean createIncomplete : new boolean[] { true, false })
1269	<	for (Integer v1 : new Integer[] { 1, null })
1269	>	for (ExecutionMode m : ExecutionMode.values())
1270		{
1228	–	final CompletableFuture<Integer> f = new CompletableFuture<>();
1271		final AtomicInteger a = new AtomicInteger(0);
1272	<	final CFException ex = new CFException();
1273	<	if (!createIncomplete) assertTrue(f.complete(v1));
1272	>	final CFException ex1 = new CFException();
1273	>	final CFException ex2 = new CFException();
1274	>	final CompletableFuture<Integer> f = new CompletableFuture<>();
1275	>
1276	>	if (!createIncomplete) f.completeExceptionally(ex1);
1277		final CompletableFuture<Integer> g = m.handle
1278		(f,
1279	<	(Integer x, Throwable t) -> {
1279	>	(Integer result, Throwable t) -> {
1280		m.checkExecutionMode();
1281	<	threadAssertSame(x, v1);
1282	<	threadAssertNull(t);
1281	>	threadAssertNull(result);
1282	>	threadAssertSame(ex1, t);
1283		a.getAndIncrement();
1284	<	throw ex;
1284	>	throw ex2;
1285		});
1286	<	if (createIncomplete) assertTrue(f.complete(v1));
1286	>	if (createIncomplete) f.completeExceptionally(ex1);
1287
1288	<	checkCompletedWithWrappedException(g, ex);
1289	<	checkCompletedNormally(f, v1);
1288	>	checkCompletedWithWrappedException(g, ex2);
1289	>	checkCompletedExceptionally(f, ex1);
1290		assertEquals(1, a.get());
1291		}}
1292
#	Line 1274 | Line 1319 | public class CompletableFutureTest exten
1319		{
1320		final FailingRunnable r = new FailingRunnable(m);
1321		final CompletableFuture<Void> f = m.runAsync(r);
1322	<	checkCompletedWithWrappedCFException(f);
1322	>	checkCompletedWithWrappedException(f, r.ex);
1323		r.assertInvoked();
1324		}}
1325
1326	+	@SuppressWarnings("FutureReturnValueIgnored")
1327	+	public void testRunAsync_rejectingExecutor() {
1328	+	CountingRejectingExecutor e = new CountingRejectingExecutor();
1329	+	try {
1330	+	CompletableFuture.runAsync(() -> {}, e);
1331	+	shouldThrow();
1332	+	} catch (Throwable t) {
1333	+	assertSame(e.ex, t);
1334	+	}
1335	+
1336	+	assertEquals(1, e.count.get());
1337	+	}
1338	+
1339		/**
1340		* supplyAsync completes with result of supplier
1341		*/
#	Line 1308 | Line 1366 | public class CompletableFutureTest exten
1366		{
1367		FailingSupplier r = new FailingSupplier(m);
1368		CompletableFuture<Integer> f = m.supplyAsync(r);
1369	<	checkCompletedWithWrappedCFException(f);
1369	>	checkCompletedWithWrappedException(f, r.ex);
1370		r.assertInvoked();
1371		}}
1372
1373	+	@SuppressWarnings("FutureReturnValueIgnored")
1374	+	public void testSupplyAsync_rejectingExecutor() {
1375	+	CountingRejectingExecutor e = new CountingRejectingExecutor();
1376	+	try {
1377	+	CompletableFuture.supplyAsync(() -> null, e);
1378	+	shouldThrow();
1379	+	} catch (Throwable t) {
1380	+	assertSame(e.ex, t);
1381	+	}
1382	+
1383	+	assertEquals(1, e.count.get());
1384	+	}
1385	+
1386		// seq completion methods
1387
1388		/**
#	Line 1430 | Line 1501 | public class CompletableFutureTest exten
1501		final CompletableFuture<Void> h4 = m.runAfterBoth(f, f, rs[4]);
1502		final CompletableFuture<Void> h5 = m.runAfterEither(f, f, rs[5]);
1503
1504	<	checkCompletedWithWrappedCFException(h0);
1505	<	checkCompletedWithWrappedCFException(h1);
1506	<	checkCompletedWithWrappedCFException(h2);
1507	<	checkCompletedWithWrappedCFException(h3);
1508	<	checkCompletedWithWrappedCFException(h4);
1509	<	checkCompletedWithWrappedCFException(h5);
1504	>	checkCompletedWithWrappedException(h0, rs[0].ex);
1505	>	checkCompletedWithWrappedException(h1, rs[1].ex);
1506	>	checkCompletedWithWrappedException(h2, rs[2].ex);
1507	>	checkCompletedWithWrappedException(h3, rs[3].ex);
1508	>	checkCompletedWithWrappedException(h4, rs[4].ex);
1509	>	checkCompletedWithWrappedException(h5, rs[5].ex);
1510		checkCompletedNormally(f, v1);
1511		}}
1512
#	Line 1534 | Line 1605 | public class CompletableFutureTest exten
1605		final CompletableFuture<Integer> h2 = m.thenApply(f, rs[2]);
1606		final CompletableFuture<Integer> h3 = m.applyToEither(f, f, rs[3]);
1607
1608	<	checkCompletedWithWrappedCFException(h0);
1609	<	checkCompletedWithWrappedCFException(h1);
1610	<	checkCompletedWithWrappedCFException(h2);
1611	<	checkCompletedWithWrappedCFException(h3);
1608	>	checkCompletedWithWrappedException(h0, rs[0].ex);
1609	>	checkCompletedWithWrappedException(h1, rs[1].ex);
1610	>	checkCompletedWithWrappedException(h2, rs[2].ex);
1611	>	checkCompletedWithWrappedException(h3, rs[3].ex);
1612		checkCompletedNormally(f, v1);
1613		}}
1614
#	Line 1636 | Line 1707 | public class CompletableFutureTest exten
1707		final CompletableFuture<Void> h2 = m.thenAccept(f, rs[2]);
1708		final CompletableFuture<Void> h3 = m.acceptEither(f, f, rs[3]);
1709
1710	<	checkCompletedWithWrappedCFException(h0);
1711	<	checkCompletedWithWrappedCFException(h1);
1712	<	checkCompletedWithWrappedCFException(h2);
1713	<	checkCompletedWithWrappedCFException(h3);
1710	>	checkCompletedWithWrappedException(h0, rs[0].ex);
1711	>	checkCompletedWithWrappedException(h1, rs[1].ex);
1712	>	checkCompletedWithWrappedException(h2, rs[2].ex);
1713	>	checkCompletedWithWrappedException(h3, rs[3].ex);
1714		checkCompletedNormally(f, v1);
1715		}}
1716
#	Line 1801 | Line 1872 | public class CompletableFutureTest exten
1872		assertTrue(snd.complete(w2));
1873		final CompletableFuture<Integer> h3 = m.thenCombine(f, g, r3);
1874
1875	<	checkCompletedWithWrappedCFException(h1);
1876	<	checkCompletedWithWrappedCFException(h2);
1877	<	checkCompletedWithWrappedCFException(h3);
1875	>	checkCompletedWithWrappedException(h1, r1.ex);
1876	>	checkCompletedWithWrappedException(h2, r2.ex);
1877	>	checkCompletedWithWrappedException(h3, r3.ex);
1878		r1.assertInvoked();
1879		r2.assertInvoked();
1880		r3.assertInvoked();
#	Line 1965 | Line 2036 | public class CompletableFutureTest exten
2036		assertTrue(snd.complete(w2));
2037		final CompletableFuture<Void> h3 = m.thenAcceptBoth(f, g, r3);
2038
2039	<	checkCompletedWithWrappedCFException(h1);
2040	<	checkCompletedWithWrappedCFException(h2);
2041	<	checkCompletedWithWrappedCFException(h3);
2039	>	checkCompletedWithWrappedException(h1, r1.ex);
2040	>	checkCompletedWithWrappedException(h2, r2.ex);
2041	>	checkCompletedWithWrappedException(h3, r3.ex);
2042		r1.assertInvoked();
2043		r2.assertInvoked();
2044		r3.assertInvoked();
#	Line 2129 | Line 2200 | public class CompletableFutureTest exten
2200		assertTrue(snd.complete(w2));
2201		final CompletableFuture<Void> h3 = m.runAfterBoth(f, g, r3);
2202
2203	<	checkCompletedWithWrappedCFException(h1);
2204	<	checkCompletedWithWrappedCFException(h2);
2205	<	checkCompletedWithWrappedCFException(h3);
2203	>	checkCompletedWithWrappedException(h1, r1.ex);
2204	>	checkCompletedWithWrappedException(h2, r2.ex);
2205	>	checkCompletedWithWrappedException(h3, r3.ex);
2206		r1.assertInvoked();
2207		r2.assertInvoked();
2208		r3.assertInvoked();
#	Line 2421 | Line 2492 | public class CompletableFutureTest exten
2492		f.complete(v1);
2493		final CompletableFuture<Integer> h2 = m.applyToEither(f, g, rs[2]);
2494		final CompletableFuture<Integer> h3 = m.applyToEither(g, f, rs[3]);
2495	<	checkCompletedWithWrappedCFException(h0);
2496	<	checkCompletedWithWrappedCFException(h1);
2497	<	checkCompletedWithWrappedCFException(h2);
2498	<	checkCompletedWithWrappedCFException(h3);
2495	>	checkCompletedWithWrappedException(h0, rs[0].ex);
2496	>	checkCompletedWithWrappedException(h1, rs[1].ex);
2497	>	checkCompletedWithWrappedException(h2, rs[2].ex);
2498	>	checkCompletedWithWrappedException(h3, rs[3].ex);
2499		for (int i = 0; i < 4; i++) rs[i].assertValue(v1);
2500
2501		g.complete(v2);
#	Line 2433 | Line 2504 | public class CompletableFutureTest exten
2504		final CompletableFuture<Integer> h4 = m.applyToEither(f, g, rs[4]);
2505		final CompletableFuture<Integer> h5 = m.applyToEither(g, f, rs[5]);
2506
2507	<	checkCompletedWithWrappedCFException(h4);
2507	>	checkCompletedWithWrappedException(h4, rs[4].ex);
2508		assertTrue(Objects.equals(v1, rs[4].value) ||
2509		Objects.equals(v2, rs[4].value));
2510	<	checkCompletedWithWrappedCFException(h5);
2510	>	checkCompletedWithWrappedException(h5, rs[5].ex);
2511		assertTrue(Objects.equals(v1, rs[5].value) ||
2512		Objects.equals(v2, rs[5].value));
2513
#	Line 2574 | Line 2645 | public class CompletableFutureTest exten
2645
2646		// unspecified behavior - both source completions available
2647		try {
2648	<	assertEquals(null, h0.join());
2648	>	assertNull(h0.join());
2649		rs[0].assertValue(v1);
2650		} catch (CompletionException ok) {
2651		checkCompletedWithWrappedException(h0, ex);
2652		rs[0].assertNotInvoked();
2653		}
2654		try {
2655	<	assertEquals(null, h1.join());
2655	>	assertNull(h1.join());
2656		rs[1].assertValue(v1);
2657		} catch (CompletionException ok) {
2658		checkCompletedWithWrappedException(h1, ex);
2659		rs[1].assertNotInvoked();
2660		}
2661		try {
2662	<	assertEquals(null, h2.join());
2662	>	assertNull(h2.join());
2663		rs[2].assertValue(v1);
2664		} catch (CompletionException ok) {
2665		checkCompletedWithWrappedException(h2, ex);
2666		rs[2].assertNotInvoked();
2667		}
2668		try {
2669	<	assertEquals(null, h3.join());
2669	>	assertNull(h3.join());
2670		rs[3].assertValue(v1);
2671		} catch (CompletionException ok) {
2672		checkCompletedWithWrappedException(h3, ex);
#	Line 2680 | Line 2751 | public class CompletableFutureTest exten
2751		f.complete(v1);
2752		final CompletableFuture<Void> h2 = m.acceptEither(f, g, rs[2]);
2753		final CompletableFuture<Void> h3 = m.acceptEither(g, f, rs[3]);
2754	<	checkCompletedWithWrappedCFException(h0);
2755	<	checkCompletedWithWrappedCFException(h1);
2756	<	checkCompletedWithWrappedCFException(h2);
2757	<	checkCompletedWithWrappedCFException(h3);
2754	>	checkCompletedWithWrappedException(h0, rs[0].ex);
2755	>	checkCompletedWithWrappedException(h1, rs[1].ex);
2756	>	checkCompletedWithWrappedException(h2, rs[2].ex);
2757	>	checkCompletedWithWrappedException(h3, rs[3].ex);
2758		for (int i = 0; i < 4; i++) rs[i].assertValue(v1);
2759
2760		g.complete(v2);
#	Line 2692 | Line 2763 | public class CompletableFutureTest exten
2763		final CompletableFuture<Void> h4 = m.acceptEither(f, g, rs[4]);
2764		final CompletableFuture<Void> h5 = m.acceptEither(g, f, rs[5]);
2765
2766	<	checkCompletedWithWrappedCFException(h4);
2766	>	checkCompletedWithWrappedException(h4, rs[4].ex);
2767		assertTrue(Objects.equals(v1, rs[4].value) ||
2768		Objects.equals(v2, rs[4].value));
2769	<	checkCompletedWithWrappedCFException(h5);
2769	>	checkCompletedWithWrappedException(h5, rs[5].ex);
2770		assertTrue(Objects.equals(v1, rs[5].value) ||
2771		Objects.equals(v2, rs[5].value));
2772
#	Line 2711 | Line 2782 | public class CompletableFutureTest exten
2782		for (ExecutionMode m : ExecutionMode.values())
2783		for (Integer v1 : new Integer[] { 1, null })
2784		for (Integer v2 : new Integer[] { 2, null })
2785	+	for (boolean pushNop : new boolean[] { true, false })
2786		{
2787		final CompletableFuture<Integer> f = new CompletableFuture<>();
2788		final CompletableFuture<Integer> g = new CompletableFuture<>();
#	Line 2723 | Line 2795 | public class CompletableFutureTest exten
2795		checkIncomplete(h1);
2796		rs[0].assertNotInvoked();
2797		rs[1].assertNotInvoked();
2798	+	if (pushNop) {          // ad hoc test of intra-completion interference
2799	+	m.thenRun(f, () -> {});
2800	+	m.thenRun(g, () -> {});
2801	+	}
2802		f.complete(v1);
2803		checkCompletedNormally(h0, null);
2804		checkCompletedNormally(h1, null);
#	Line 2829 | Line 2905 | public class CompletableFutureTest exten
2905
2906		// unspecified behavior - both source completions available
2907		try {
2908	<	assertEquals(null, h0.join());
2908	>	assertNull(h0.join());
2909		rs[0].assertInvoked();
2910		} catch (CompletionException ok) {
2911		checkCompletedWithWrappedException(h0, ex);
2912		rs[0].assertNotInvoked();
2913		}
2914		try {
2915	<	assertEquals(null, h1.join());
2915	>	assertNull(h1.join());
2916		rs[1].assertInvoked();
2917		} catch (CompletionException ok) {
2918		checkCompletedWithWrappedException(h1, ex);
2919		rs[1].assertNotInvoked();
2920		}
2921		try {
2922	<	assertEquals(null, h2.join());
2922	>	assertNull(h2.join());
2923		rs[2].assertInvoked();
2924		} catch (CompletionException ok) {
2925		checkCompletedWithWrappedException(h2, ex);
2926		rs[2].assertNotInvoked();
2927		}
2928		try {
2929	<	assertEquals(null, h3.join());
2929	>	assertNull(h3.join());
2930		rs[3].assertInvoked();
2931		} catch (CompletionException ok) {
2932		checkCompletedWithWrappedException(h3, ex);
#	Line 2935 | Line 3011 | public class CompletableFutureTest exten
3011		assertTrue(f.complete(v1));
3012		final CompletableFuture<Void> h2 = m.runAfterEither(f, g, rs[2]);
3013		final CompletableFuture<Void> h3 = m.runAfterEither(g, f, rs[3]);
3014	<	checkCompletedWithWrappedCFException(h0);
3015	<	checkCompletedWithWrappedCFException(h1);
3016	<	checkCompletedWithWrappedCFException(h2);
3017	<	checkCompletedWithWrappedCFException(h3);
3014	>	checkCompletedWithWrappedException(h0, rs[0].ex);
3015	>	checkCompletedWithWrappedException(h1, rs[1].ex);
3016	>	checkCompletedWithWrappedException(h2, rs[2].ex);
3017	>	checkCompletedWithWrappedException(h3, rs[3].ex);
3018		for (int i = 0; i < 4; i++) rs[i].assertInvoked();
3019		assertTrue(g.complete(v2));
3020		final CompletableFuture<Void> h4 = m.runAfterEither(f, g, rs[4]);
3021		final CompletableFuture<Void> h5 = m.runAfterEither(g, f, rs[5]);
3022	<	checkCompletedWithWrappedCFException(h4);
3023	<	checkCompletedWithWrappedCFException(h5);
3022	>	checkCompletedWithWrappedException(h4, rs[4].ex);
3023	>	checkCompletedWithWrappedException(h5, rs[5].ex);
3024
3025		checkCompletedNormally(f, v1);
3026		checkCompletedNormally(g, v2);
#	Line 3005 | Line 3081 | public class CompletableFutureTest exten
3081		final CompletableFuture<Integer> g = m.thenCompose(f, r);
3082		if (createIncomplete) assertTrue(f.complete(v1));
3083
3084	<	checkCompletedWithWrappedCFException(g);
3084	>	checkCompletedWithWrappedException(g, r.ex);
3085		checkCompletedNormally(f, v1);
3086		}}
3087
#	Line 3082 | Line 3158 | public class CompletableFutureTest exten
3158		checkCompletedNormally(f, v1);
3159		}}
3160
3161	+	/**
3162	+	* exceptionallyCompose result completes normally after normal
3163	+	* completion of source
3164	+	*/
3165	+	public void testExceptionallyCompose_normalCompletion() {
3166	+	for (ExecutionMode m : ExecutionMode.values())
3167	+	for (boolean createIncomplete : new boolean[] { true, false })
3168	+	for (Integer v1 : new Integer[] { 1, null })
3169	+	{
3170	+	final CompletableFuture<Integer> f = new CompletableFuture<>();
3171	+	final ExceptionalCompletableFutureFunction r =
3172	+	new ExceptionalCompletableFutureFunction(m);
3173	+	if (!createIncomplete) assertTrue(f.complete(v1));
3174	+	final CompletableFuture<Integer> g = m.exceptionallyCompose(f, r);
3175	+	if (createIncomplete) assertTrue(f.complete(v1));
3176	+
3177	+	checkCompletedNormally(f, v1);
3178	+	checkCompletedNormally(g, v1);
3179	+	r.assertNotInvoked();
3180	+	}}
3181	+
3182	+	/**
3183	+	* exceptionallyCompose result completes normally after exceptional
3184	+	* completion of source
3185	+	*/
3186	+	public void testExceptionallyCompose_exceptionalCompletion() {
3187	+	for (ExecutionMode m : ExecutionMode.values())
3188	+	for (boolean createIncomplete : new boolean[] { true, false })
3189	+	{
3190	+	final CFException ex = new CFException();
3191	+	final ExceptionalCompletableFutureFunction r =
3192	+	new ExceptionalCompletableFutureFunction(m);
3193	+	final CompletableFuture<Integer> f = new CompletableFuture<>();
3194	+	if (!createIncomplete) f.completeExceptionally(ex);
3195	+	final CompletableFuture<Integer> g = m.exceptionallyCompose(f, r);
3196	+	if (createIncomplete) f.completeExceptionally(ex);
3197	+
3198	+	checkCompletedExceptionally(f, ex);
3199	+	checkCompletedNormally(g, r.value);
3200	+	r.assertInvoked();
3201	+	}}
3202	+
3203	+	/**
3204	+	* exceptionallyCompose completes exceptionally on exception if action does
3205	+	*/
3206	+	public void testExceptionallyCompose_actionFailed() {
3207	+	for (ExecutionMode m : ExecutionMode.values())
3208	+	for (boolean createIncomplete : new boolean[] { true, false })
3209	+	for (Integer v1 : new Integer[] { 1, null })
3210	+	{
3211	+	final CFException ex = new CFException();
3212	+	final CompletableFuture<Integer> f = new CompletableFuture<>();
3213	+	final FailingExceptionalCompletableFutureFunction r
3214	+	= new FailingExceptionalCompletableFutureFunction(m);
3215	+	if (!createIncomplete) f.completeExceptionally(ex);
3216	+	final CompletableFuture<Integer> g = m.exceptionallyCompose(f, r);
3217	+	if (createIncomplete) f.completeExceptionally(ex);
3218	+
3219	+	checkCompletedExceptionally(f, ex);
3220	+	checkCompletedWithWrappedException(g, r.ex);
3221	+	r.assertInvoked();
3222	+	}}
3223	+
3224	+
3225		// other static methods
3226
3227		/**
#	Line 3114 | Line 3254 | public class CompletableFutureTest exten
3254		}
3255		}
3256
3257	<	public void testAllOf_backwards() throws Exception {
3257	>	public void testAllOf_normal_backwards() throws Exception {
3258		for (int k = 1; k < 10; k++) {
3259		CompletableFuture<Integer>[] fs
3260		= (CompletableFuture<Integer>[]) new CompletableFuture[k];
#	Line 3142 | Line 3282 | public class CompletableFutureTest exten
3282		for (int i = 0; i < k; i++) {
3283		checkIncomplete(f);
3284		checkIncomplete(CompletableFuture.allOf(fs));
3285	<	if (i != k/2) {
3285	>	if (i != k / 2) {
3286		fs[i].complete(i);
3287		checkCompletedNormally(fs[i], i);
3288		} else {
#	Line 3245 | Line 3385 | public class CompletableFutureTest exten
3385		/**
3386		* Completion methods throw NullPointerException with null arguments
3387		*/
3388	+	@SuppressWarnings("FutureReturnValueIgnored")
3389		public void testNPE() {
3390		CompletableFuture<Integer> f = new CompletableFuture<>();
3391		CompletableFuture<Integer> g = new CompletableFuture<>();
#	Line 3264 | Line 3405 | public class CompletableFutureTest exten
3405
3406		() -> f.thenApply(null),
3407		() -> f.thenApplyAsync(null),
3408	<	() -> f.thenApplyAsync((x) -> x, null),
3408	>	() -> f.thenApplyAsync(x -> x, null),
3409		() -> f.thenApplyAsync(null, exec),
3410
3411		() -> f.thenAccept(null),
3412		() -> f.thenAcceptAsync(null),
3413	<	() -> f.thenAcceptAsync((x) -> {} , null),
3413	>	() -> f.thenAcceptAsync(x -> {} , null),
3414		() -> f.thenAcceptAsync(null, exec),
3415
3416		() -> f.thenRun(null),
#	Line 3304 | Line 3445 | public class CompletableFutureTest exten
3445		() -> f.applyToEither(g, null),
3446		() -> f.applyToEitherAsync(g, null),
3447		() -> f.applyToEitherAsync(g, null, exec),
3448	<	() -> f.applyToEither(nullFuture, (x) -> x),
3449	<	() -> f.applyToEitherAsync(nullFuture, (x) -> x),
3450	<	() -> f.applyToEitherAsync(nullFuture, (x) -> x, exec),
3451	<	() -> f.applyToEitherAsync(g, (x) -> x, null),
3448	>	() -> f.applyToEither(nullFuture, x -> x),
3449	>	() -> f.applyToEitherAsync(nullFuture, x -> x),
3450	>	() -> f.applyToEitherAsync(nullFuture, x -> x, exec),
3451	>	() -> f.applyToEitherAsync(g, x -> x, null),
3452
3453		() -> f.acceptEither(g, null),
3454		() -> f.acceptEitherAsync(g, null),
3455		() -> f.acceptEitherAsync(g, null, exec),
3456	<	() -> f.acceptEither(nullFuture, (x) -> {}),
3457	<	() -> f.acceptEitherAsync(nullFuture, (x) -> {}),
3458	<	() -> f.acceptEitherAsync(nullFuture, (x) -> {}, exec),
3459	<	() -> f.acceptEitherAsync(g, (x) -> {}, null),
3456	>	() -> f.acceptEither(nullFuture, x -> {}),
3457	>	() -> f.acceptEitherAsync(nullFuture, x -> {}),
3458	>	() -> f.acceptEitherAsync(nullFuture, x -> {}, exec),
3459	>	() -> f.acceptEitherAsync(g, x -> {}, null),
3460
3461		() -> f.runAfterEither(g, null),
3462		() -> f.runAfterEitherAsync(g, null),
#	Line 3347 | Line 3488 | public class CompletableFutureTest exten
3488		() -> f.obtrudeException(null),
3489
3490		() -> CompletableFuture.delayedExecutor(1L, SECONDS, null),
3491	<	() -> CompletableFuture.delayedExecutor(1L, null, new ThreadExecutor()),
3491	>	() -> CompletableFuture.delayedExecutor(1L, null, exec),
3492		() -> CompletableFuture.delayedExecutor(1L, null),
3493
3494		() -> f.orTimeout(1L, null),
3495		() -> f.completeOnTimeout(42, 1L, null),
3496	+
3497	+	() -> CompletableFuture.failedFuture(null),
3498	+	() -> CompletableFuture.failedStage(null),
3499		};
3500
3501		assertThrows(NullPointerException.class, throwingActions);
#	Line 3359 | Line 3503 | public class CompletableFutureTest exten
3503		}
3504
3505		/**
3506	+	* Test submissions to an executor that rejects all tasks.
3507	+	*/
3508	+	public void testRejectingExecutor() {
3509	+	for (Integer v : new Integer[] { 1, null })
3510	+	{
3511	+	final CountingRejectingExecutor e = new CountingRejectingExecutor();
3512	+
3513	+	final CompletableFuture<Integer> complete = CompletableFuture.completedFuture(v);
3514	+	final CompletableFuture<Integer> incomplete = new CompletableFuture<>();
3515	+
3516	+	List<CompletableFuture<?>> futures = new ArrayList<>();
3517	+
3518	+	List<CompletableFuture<Integer>> srcs = new ArrayList<>();
3519	+	srcs.add(complete);
3520	+	srcs.add(incomplete);
3521	+
3522	+	for (CompletableFuture<Integer> src : srcs) {
3523	+	List<CompletableFuture<?>> fs = new ArrayList<>();
3524	+	fs.add(src.thenRunAsync(() -> {}, e));
3525	+	fs.add(src.thenAcceptAsync(z -> {}, e));
3526	+	fs.add(src.thenApplyAsync(z -> z, e));
3527	+
3528	+	fs.add(src.thenCombineAsync(src, (x, y) -> x, e));
3529	+	fs.add(src.thenAcceptBothAsync(src, (x, y) -> {}, e));
3530	+	fs.add(src.runAfterBothAsync(src, () -> {}, e));
3531	+
3532	+	fs.add(src.applyToEitherAsync(src, z -> z, e));
3533	+	fs.add(src.acceptEitherAsync(src, z -> {}, e));
3534	+	fs.add(src.runAfterEitherAsync(src, () -> {}, e));
3535	+
3536	+	fs.add(src.thenComposeAsync(z -> null, e));
3537	+	fs.add(src.whenCompleteAsync((z, t) -> {}, e));
3538	+	fs.add(src.handleAsync((z, t) -> null, e));
3539	+
3540	+	for (CompletableFuture<?> future : fs) {
3541	+	if (src.isDone())
3542	+	checkCompletedWithWrappedException(future, e.ex);
3543	+	else
3544	+	checkIncomplete(future);
3545	+	}
3546	+	futures.addAll(fs);
3547	+	}
3548	+
3549	+	{
3550	+	List<CompletableFuture<?>> fs = new ArrayList<>();
3551	+
3552	+	fs.add(complete.thenCombineAsync(incomplete, (x, y) -> x, e));
3553	+	fs.add(incomplete.thenCombineAsync(complete, (x, y) -> x, e));
3554	+
3555	+	fs.add(complete.thenAcceptBothAsync(incomplete, (x, y) -> {}, e));
3556	+	fs.add(incomplete.thenAcceptBothAsync(complete, (x, y) -> {}, e));
3557	+
3558	+	fs.add(complete.runAfterBothAsync(incomplete, () -> {}, e));
3559	+	fs.add(incomplete.runAfterBothAsync(complete, () -> {}, e));
3560	+
3561	+	for (CompletableFuture<?> future : fs)
3562	+	checkIncomplete(future);
3563	+	futures.addAll(fs);
3564	+	}
3565	+
3566	+	{
3567	+	List<CompletableFuture<?>> fs = new ArrayList<>();
3568	+
3569	+	fs.add(complete.applyToEitherAsync(incomplete, z -> z, e));
3570	+	fs.add(incomplete.applyToEitherAsync(complete, z -> z, e));
3571	+
3572	+	fs.add(complete.acceptEitherAsync(incomplete, z -> {}, e));
3573	+	fs.add(incomplete.acceptEitherAsync(complete, z -> {}, e));
3574	+
3575	+	fs.add(complete.runAfterEitherAsync(incomplete, () -> {}, e));
3576	+	fs.add(incomplete.runAfterEitherAsync(complete, () -> {}, e));
3577	+
3578	+	for (CompletableFuture<?> future : fs)
3579	+	checkCompletedWithWrappedException(future, e.ex);
3580	+	futures.addAll(fs);
3581	+	}
3582	+
3583	+	incomplete.complete(v);
3584	+
3585	+	for (CompletableFuture<?> future : futures)
3586	+	checkCompletedWithWrappedException(future, e.ex);
3587	+
3588	+	assertEquals(futures.size(), e.count.get());
3589	+	}}
3590	+
3591	+	/**
3592	+	* Test submissions to an executor that rejects all tasks, but
3593	+	* should never be invoked because the dependent future is
3594	+	* explicitly completed.
3595	+	*/
3596	+	public void testRejectingExecutorNeverInvoked() {
3597	+	for (Integer v : new Integer[] { 1, null })
3598	+	{
3599	+	final CountingRejectingExecutor e = new CountingRejectingExecutor();
3600	+
3601	+	final CompletableFuture<Integer> complete = CompletableFuture.completedFuture(v);
3602	+	final CompletableFuture<Integer> incomplete = new CompletableFuture<>();
3603	+
3604	+	List<CompletableFuture<?>> futures = new ArrayList<>();
3605	+
3606	+	List<CompletableFuture<Integer>> srcs = new ArrayList<>();
3607	+	srcs.add(complete);
3608	+	srcs.add(incomplete);
3609	+
3610	+	List<CompletableFuture<?>> fs = new ArrayList<>();
3611	+	fs.add(incomplete.thenRunAsync(() -> {}, e));
3612	+	fs.add(incomplete.thenAcceptAsync(z -> {}, e));
3613	+	fs.add(incomplete.thenApplyAsync(z -> z, e));
3614	+
3615	+	fs.add(incomplete.thenCombineAsync(incomplete, (x, y) -> x, e));
3616	+	fs.add(incomplete.thenAcceptBothAsync(incomplete, (x, y) -> {}, e));
3617	+	fs.add(incomplete.runAfterBothAsync(incomplete, () -> {}, e));
3618	+
3619	+	fs.add(incomplete.applyToEitherAsync(incomplete, z -> z, e));
3620	+	fs.add(incomplete.acceptEitherAsync(incomplete, z -> {}, e));
3621	+	fs.add(incomplete.runAfterEitherAsync(incomplete, () -> {}, e));
3622	+
3623	+	fs.add(incomplete.thenComposeAsync(z -> null, e));
3624	+	fs.add(incomplete.whenCompleteAsync((z, t) -> {}, e));
3625	+	fs.add(incomplete.handleAsync((z, t) -> null, e));
3626	+
3627	+	fs.add(complete.thenCombineAsync(incomplete, (x, y) -> x, e));
3628	+	fs.add(incomplete.thenCombineAsync(complete, (x, y) -> x, e));
3629	+
3630	+	fs.add(complete.thenAcceptBothAsync(incomplete, (x, y) -> {}, e));
3631	+	fs.add(incomplete.thenAcceptBothAsync(complete, (x, y) -> {}, e));
3632	+
3633	+	fs.add(complete.runAfterBothAsync(incomplete, () -> {}, e));
3634	+	fs.add(incomplete.runAfterBothAsync(complete, () -> {}, e));
3635	+
3636	+	for (CompletableFuture<?> future : fs)
3637	+	checkIncomplete(future);
3638	+
3639	+	for (CompletableFuture<?> future : fs)
3640	+	future.complete(null);
3641	+
3642	+	incomplete.complete(v);
3643	+
3644	+	for (CompletableFuture<?> future : fs)
3645	+	checkCompletedNormally(future, null);
3646	+
3647	+	assertEquals(0, e.count.get());
3648	+	}}
3649	+
3650	+	/**
3651		* toCompletableFuture returns this CompletableFuture.
3652		*/
3653		public void testToCompletableFuture() {
#	Line 3372 | Line 3661 | public class CompletableFutureTest exten
3661		* newIncompleteFuture returns an incomplete CompletableFuture
3662		*/
3663		public void testNewIncompleteFuture() {
3664	+	for (Integer v1 : new Integer[] { 1, null })
3665	+	{
3666		CompletableFuture<Integer> f = new CompletableFuture<>();
3667		CompletableFuture<Integer> g = f.newIncompleteFuture();
3668		checkIncomplete(f);
3669		checkIncomplete(g);
3670	<	}
3670	>	f.complete(v1);
3671	>	checkCompletedNormally(f, v1);
3672	>	checkIncomplete(g);
3673	>	g.complete(v1);
3674	>	checkCompletedNormally(g, v1);
3675	>	assertSame(g.getClass(), CompletableFuture.class);
3676	>	}}
3677
3678		/**
3679		* completedStage returns a completed CompletionStage
3680		*/
3681		public void testCompletedStage() {
3682	<	AtomicInteger x = new AtomicInteger();
3683	<	AtomicReference<Throwable> r = new AtomicReference<Throwable>();
3682	>	AtomicInteger x = new AtomicInteger(0);
3683	>	AtomicReference<Throwable> r = new AtomicReference<>();
3684		CompletionStage<Integer> f = CompletableFuture.completedStage(1);
3685		f.whenComplete((v, e) -> {if (e != null) r.set(e); else x.set(v);});
3686		assertEquals(x.get(), 1);
#	Line 3411 | Line 3708 | public class CompletableFutureTest exten
3708		public void testFailedFuture() {
3709		CFException ex = new CFException();
3710		CompletableFuture<Integer> f = CompletableFuture.failedFuture(ex);
3711	<	checkCompletedExceptionallyWithRootCause(f, ex);
3711	>	checkCompletedExceptionally(f, ex);
3712		}
3713
3714		/**
3715		* failedFuture(null) throws NPE
3716		*/
3717	<	public void testFailedFuture2() {
3717	>	public void testFailedFuture_null() {
3718		try {
3719		CompletableFuture<Integer> f = CompletableFuture.failedFuture(null);
3720		shouldThrow();
#	Line 3428 | Line 3725 | public class CompletableFutureTest exten
3725		* copy returns a CompletableFuture that is completed normally,
3726		* with the same value, when source is.
3727		*/
3728	<	public void testCopy() {
3728	>	public void testCopy_normalCompletion() {
3729	>	for (boolean createIncomplete : new boolean[] { true, false })
3730	>	for (Integer v1 : new Integer[] { 1, null })
3731	>	{
3732		CompletableFuture<Integer> f = new CompletableFuture<>();
3733	+	if (!createIncomplete) assertTrue(f.complete(v1));
3734		CompletableFuture<Integer> g = f.copy();
3735	<	checkIncomplete(f);
3736	<	checkIncomplete(g);
3737	<	f.complete(1);
3738	<	checkCompletedNormally(f, 1);
3739	<	checkCompletedNormally(g, 1);
3740	<	}
3735	>	if (createIncomplete) {
3736	>	checkIncomplete(f);
3737	>	checkIncomplete(g);
3738	>	assertTrue(f.complete(v1));
3739	>	}
3740	>	checkCompletedNormally(f, v1);
3741	>	checkCompletedNormally(g, v1);
3742	>	}}
3743
3744		/**
3745		* copy returns a CompletableFuture that is completed exceptionally
3746		* when source is.
3747		*/
3748	<	public void testCopy2() {
3748	>	public void testCopy_exceptionalCompletion() {
3749	>	for (boolean createIncomplete : new boolean[] { true, false })
3750	>	{
3751	>	CFException ex = new CFException();
3752		CompletableFuture<Integer> f = new CompletableFuture<>();
3753	+	if (!createIncomplete) f.completeExceptionally(ex);
3754		CompletableFuture<Integer> g = f.copy();
3755	<	checkIncomplete(f);
3756	<	checkIncomplete(g);
3757	<	CFException ex = new CFException();
3758	<	f.completeExceptionally(ex);
3755	>	if (createIncomplete) {
3756	>	checkIncomplete(f);
3757	>	checkIncomplete(g);
3758	>	f.completeExceptionally(ex);
3759	>	}
3760		checkCompletedExceptionally(f, ex);
3761	<	checkCompletedWithWrappedCFException(g);
3761	>	checkCompletedWithWrappedException(g, ex);
3762	>	}}
3763	>
3764	>	/**
3765	>	* Completion of a copy does not complete its source.
3766	>	*/
3767	>	public void testCopy_oneWayPropagation() {
3768	>	CompletableFuture<Integer> f = new CompletableFuture<>();
3769	>	assertTrue(f.copy().complete(1));
3770	>	assertTrue(f.copy().complete(null));
3771	>	assertTrue(f.copy().cancel(true));
3772	>	assertTrue(f.copy().cancel(false));
3773	>	assertTrue(f.copy().completeExceptionally(new CFException()));
3774	>	checkIncomplete(f);
3775		}
3776
3777		/**
#	Line 3460 | Line 3781 | public class CompletableFutureTest exten
3781		public void testMinimalCompletionStage() {
3782		CompletableFuture<Integer> f = new CompletableFuture<>();
3783		CompletionStage<Integer> g = f.minimalCompletionStage();
3784	<	AtomicInteger x = new AtomicInteger();
3785	<	AtomicReference<Throwable> r = new AtomicReference<Throwable>();
3784	>	AtomicInteger x = new AtomicInteger(0);
3785	>	AtomicReference<Throwable> r = new AtomicReference<>();
3786		checkIncomplete(f);
3787		g.whenComplete((v, e) -> {if (e != null) r.set(e); else x.set(v);});
3788		f.complete(1);
#	Line 3477 | Line 3798 | public class CompletableFutureTest exten
3798		public void testMinimalCompletionStage2() {
3799		CompletableFuture<Integer> f = new CompletableFuture<>();
3800		CompletionStage<Integer> g = f.minimalCompletionStage();
3801	<	AtomicInteger x = new AtomicInteger();
3802	<	AtomicReference<Throwable> r = new AtomicReference<Throwable>();
3801	>	AtomicInteger x = new AtomicInteger(0);
3802	>	AtomicReference<Throwable> r = new AtomicReference<>();
3803		g.whenComplete((v, e) -> {if (e != null) r.set(e); else x.set(v);});
3804		checkIncomplete(f);
3805		CFException ex = new CFException();
#	Line 3495 | Line 3816 | public class CompletableFutureTest exten
3816		public void testFailedStage() {
3817		CFException ex = new CFException();
3818		CompletionStage<Integer> f = CompletableFuture.failedStage(ex);
3819	<	AtomicInteger x = new AtomicInteger();
3820	<	AtomicReference<Throwable> r = new AtomicReference<Throwable>();
3819	>	AtomicInteger x = new AtomicInteger(0);
3820	>	AtomicReference<Throwable> r = new AtomicReference<>();
3821		f.whenComplete((v, e) -> {if (e != null) r.set(e); else x.set(v);});
3822		assertEquals(x.get(), 0);
3823	<	assertEquals(r.get().getCause(), ex);
3823	>	assertEquals(r.get(), ex);
3824		}
3825
3826		/**
3827		* completeAsync completes with value of given supplier
3828		*/
3829		public void testCompleteAsync() {
3830	+	for (Integer v1 : new Integer[] { 1, null })
3831	+	{
3832		CompletableFuture<Integer> f = new CompletableFuture<>();
3833	<	f.completeAsync(() -> 1);
3833	>	f.completeAsync(() -> v1);
3834		f.join();
3835	<	checkCompletedNormally(f, 1);
3836	<	}
3835	>	checkCompletedNormally(f, v1);
3836	>	}}
3837
3838		/**
3839		* completeAsync completes exceptionally if given supplier throws
#	Line 3518 | Line 3841 | public class CompletableFutureTest exten
3841		public void testCompleteAsync2() {
3842		CompletableFuture<Integer> f = new CompletableFuture<>();
3843		CFException ex = new CFException();
3844	<	f.completeAsync(() -> {if (true) throw ex; return 1;});
3844	>	f.completeAsync(() -> { throw ex; });
3845		try {
3846		f.join();
3847		shouldThrow();
3848	<	} catch (Exception success) {}
3849	<	checkCompletedWithWrappedCFException(f);
3848	>	} catch (CompletionException success) {}
3849	>	checkCompletedWithWrappedException(f, ex);
3850		}
3851
3852		/**
3853		* completeAsync with given executor completes with value of given supplier
3854		*/
3855		public void testCompleteAsync3() {
3856	+	for (Integer v1 : new Integer[] { 1, null })
3857	+	{
3858		CompletableFuture<Integer> f = new CompletableFuture<>();
3859	<	f.completeAsync(() -> 1, new ThreadExecutor());
3860	<	f.join();
3861	<	checkCompletedNormally(f, 1);
3862	<	}
3859	>	ThreadExecutor executor = new ThreadExecutor();
3860	>	f.completeAsync(() -> v1, executor);
3861	>	assertSame(v1, f.join());
3862	>	checkCompletedNormally(f, v1);
3863	>	assertEquals(1, executor.count.get());
3864	>	}}
3865
3866		/**
3867		* completeAsync with given executor completes exceptionally if
#	Line 3543 | Line 3870 | public class CompletableFutureTest exten
3870		public void testCompleteAsync4() {
3871		CompletableFuture<Integer> f = new CompletableFuture<>();
3872		CFException ex = new CFException();
3873	<	f.completeAsync(() -> {if (true) throw ex; return 1;}, new ThreadExecutor());
3873	>	ThreadExecutor executor = new ThreadExecutor();
3874	>	f.completeAsync(() -> { throw ex; }, executor);
3875		try {
3876		f.join();
3877		shouldThrow();
3878	<	} catch (Exception success) {}
3879	<	checkCompletedWithWrappedCFException(f);
3878	>	} catch (CompletionException success) {}
3879	>	checkCompletedWithWrappedException(f, ex);
3880	>	assertEquals(1, executor.count.get());
3881		}
3882
3883		/**
3884		* orTimeout completes with TimeoutException if not complete
3885		*/
3886	<	public void testOrTimeout() {
3886	>	public void testOrTimeout_timesOut() {
3887	>	long timeoutMillis = timeoutMillis();
3888		CompletableFuture<Integer> f = new CompletableFuture<>();
3889	<	f.orTimeout(SHORT_DELAY_MS, MILLISECONDS);
3890	<	checkCompletedExceptionallyWithTimeout(f);
3889	>	long startTime = System.nanoTime();
3890	>	assertSame(f, f.orTimeout(timeoutMillis, MILLISECONDS));
3891	>	checkCompletedWithTimeoutException(f);
3892	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
3893		}
3894
3895		/**
3896		* orTimeout completes normally if completed before timeout
3897		*/
3898	<	public void testOrTimeout2() {
3898	>	public void testOrTimeout_completed() {
3899	>	for (Integer v1 : new Integer[] { 1, null })
3900	>	{
3901		CompletableFuture<Integer> f = new CompletableFuture<>();
3902	<	f.complete(1);
3903	<	f.orTimeout(SHORT_DELAY_MS, MILLISECONDS);
3904	<	checkCompletedNormally(f, 1);
3905	<	}
3902	>	CompletableFuture<Integer> g = new CompletableFuture<>();
3903	>	long startTime = System.nanoTime();
3904	>	f.complete(v1);
3905	>	assertSame(f, f.orTimeout(LONG_DELAY_MS, MILLISECONDS));
3906	>	assertSame(g, g.orTimeout(LONG_DELAY_MS, MILLISECONDS));
3907	>	g.complete(v1);
3908	>	checkCompletedNormally(f, v1);
3909	>	checkCompletedNormally(g, v1);
3910	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS / 2);
3911	>	}}
3912
3913		/**
3914		* completeOnTimeout completes with given value if not complete
3915		*/
3916	<	public void testCompleteOnTimeout() {
3917	<	CompletableFuture<Integer> f = new CompletableFuture<>();
3918	<	f.completeOnTimeout(-1, SHORT_DELAY_MS, MILLISECONDS);
3579	<	f.join();
3580	<	checkCompletedNormally(f, -1);
3916	>	public void testCompleteOnTimeout_timesOut() {
3917	>	testInParallel(() -> testCompleteOnTimeout_timesOut(42),
3918	>	() -> testCompleteOnTimeout_timesOut(null));
3919		}
3920
3921		/**
3922	<	* completeOnTimeout has no effect if completed within timeout
3922	>	* completeOnTimeout completes with given value if not complete
3923		*/
3924	<	public void testCompleteOnTimeout2() {
3924	>	public void testCompleteOnTimeout_timesOut(Integer v) {
3925	>	long timeoutMillis = timeoutMillis();
3926		CompletableFuture<Integer> f = new CompletableFuture<>();
3927	<	f.complete(1);
3928	<	f.completeOnTimeout(-1, SHORT_DELAY_MS, MILLISECONDS);
3929	<	checkCompletedNormally(f, 1);
3927	>	long startTime = System.nanoTime();
3928	>	assertSame(f, f.completeOnTimeout(v, timeoutMillis, MILLISECONDS));
3929	>	assertSame(v, f.join());
3930	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
3931	>	f.complete(99);         // should have no effect
3932	>	checkCompletedNormally(f, v);
3933		}
3934
3935		/**
3936	<	* delayedExecutor returns an executor that delays submission
3936	>	* completeOnTimeout has no effect if completed within timeout
3937		*/
3938	<	public void testDelayedExecutor() throws Exception {
3939	<	long timeoutMillis = SMALL_DELAY_MS;
3940	<	Executor d = CompletableFuture.delayedExecutor(timeoutMillis,
3941	<	MILLISECONDS);
3938	>	public void testCompleteOnTimeout_completed() {
3939	>	for (Integer v1 : new Integer[] { 1, null })
3940	>	{
3941	>	CompletableFuture<Integer> f = new CompletableFuture<>();
3942	>	CompletableFuture<Integer> g = new CompletableFuture<>();
3943		long startTime = System.nanoTime();
3944	<	CompletableFuture<Integer> f = CompletableFuture.supplyAsync(() -> 1, d);
3945	<	assertNull(f.getNow(null));
3946	<	assertEquals(1, (int) f.get(LONG_DELAY_MS, MILLISECONDS));
3947	<	assertTrue(millisElapsedSince(startTime) > timeoutMillis/2);
3948	<	checkCompletedNormally(f, 1);
3949	<	}
3944	>	f.complete(v1);
3945	>	assertSame(f, f.completeOnTimeout(-1, LONG_DELAY_MS, MILLISECONDS));
3946	>	assertSame(g, g.completeOnTimeout(-1, LONG_DELAY_MS, MILLISECONDS));
3947	>	g.complete(v1);
3948	>	checkCompletedNormally(f, v1);
3949	>	checkCompletedNormally(g, v1);
3950	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS / 2);
3951	>	}}
3952
3953		/**
3954	<	* delayedExecutor for a given executor returns an executor that
3610	<	* delays submission
3954	>	* delayedExecutor returns an executor that delays submission
3955		*/
3956	<	public void testDelayedExecutor2() throws Exception {
3957	<	long timeoutMillis = SMALL_DELAY_MS;
3958	<	Executor d = CompletableFuture.delayedExecutor(timeoutMillis,
3959	<	MILLISECONDS,
3960	<	new ThreadExecutor());
3956	>	public void testDelayedExecutor() {
3957	>	testInParallel(() -> testDelayedExecutor(null, null),
3958	>	() -> testDelayedExecutor(null, 1),
3959	>	() -> testDelayedExecutor(new ThreadExecutor(), 1),
3960	>	() -> testDelayedExecutor(new ThreadExecutor(), 1));
3961	>	}
3962	>
3963	>	public void testDelayedExecutor(Executor executor, Integer v) throws Exception {
3964	>	long timeoutMillis = timeoutMillis();
3965	>	// Use an "unreasonably long" long timeout to catch lingering threads
3966	>	long longTimeoutMillis = 1000 * 60 * 60 * 24;
3967	>	final Executor delayer, longDelayer;
3968	>	if (executor == null) {
3969	>	delayer = CompletableFuture.delayedExecutor(timeoutMillis, MILLISECONDS);
3970	>	longDelayer = CompletableFuture.delayedExecutor(longTimeoutMillis, MILLISECONDS);
3971	>	} else {
3972	>	delayer = CompletableFuture.delayedExecutor(timeoutMillis, MILLISECONDS, executor);
3973	>	longDelayer = CompletableFuture.delayedExecutor(longTimeoutMillis, MILLISECONDS, executor);
3974	>	}
3975		long startTime = System.nanoTime();
3976	<	CompletableFuture<Integer> f = CompletableFuture.supplyAsync(() -> 1, d);
3977	<	assertNull(f.getNow(null));
3978	<	assertEquals(1, (int) f.get(LONG_DELAY_MS, MILLISECONDS));
3979	<	assertTrue(millisElapsedSince(startTime) > timeoutMillis/2);
3980	<	checkCompletedNormally(f, 1);
3976	>	CompletableFuture<Integer> f =
3977	>	CompletableFuture.supplyAsync(() -> v, delayer);
3978	>	CompletableFuture<Integer> g =
3979	>	CompletableFuture.supplyAsync(() -> v, longDelayer);
3980	>
3981	>	assertNull(g.getNow(null));
3982	>
3983	>	assertSame(v, f.get(LONG_DELAY_MS, MILLISECONDS));
3984	>	long millisElapsed = millisElapsedSince(startTime);
3985	>	assertTrue(millisElapsed >= timeoutMillis);
3986	>	assertTrue(millisElapsed < LONG_DELAY_MS / 2);
3987	>
3988	>	checkCompletedNormally(f, v);
3989	>
3990	>	checkIncomplete(g);
3991	>	assertTrue(g.cancel(true));
3992		}
3993
3994		//--- tests of implementation details; not part of official tck ---
3995
3996		Object resultOf(CompletableFuture<?> f) {
3997	+	SecurityManager sm = System.getSecurityManager();
3998	+	if (sm != null) {
3999	+	try {
4000	+	System.setSecurityManager(null);
4001	+	} catch (SecurityException giveUp) {
4002	+	return "Reflection not available";
4003	+	}
4004	+	}
4005	+
4006		try {
4007		java.lang.reflect.Field resultField
4008		= CompletableFuture.class.getDeclaredField("result");
4009		resultField.setAccessible(true);
4010		return resultField.get(f);
4011	<	} catch (Throwable t) { throw new AssertionError(t); }
4011	>	} catch (Throwable t) {
4012	>	throw new AssertionError(t);
4013	>	} finally {
4014	>	if (sm != null) System.setSecurityManager(sm);
4015	>	}
4016		}
4017
4018		public void testExceptionPropagationReusesResultObject() {
#	Line 3641 | Line 4023 | public class CompletableFutureTest exten
4023		final CompletableFuture<Integer> v42 = CompletableFuture.completedFuture(42);
4024		final CompletableFuture<Integer> incomplete = new CompletableFuture<>();
4025
4026	+	final Runnable noopRunnable = new Noop(m);
4027	+	final Consumer<Integer> noopConsumer = new NoopConsumer(m);
4028	+	final Function<Integer, Integer> incFunction = new IncFunction(m);
4029	+
4030		List<Function<CompletableFuture<Integer>, CompletableFuture<?>>> funs
4031		= new ArrayList<>();
4032
4033	<	funs.add((y) -> m.thenRun(y, new Noop(m)));
4034	<	funs.add((y) -> m.thenAccept(y, new NoopConsumer(m)));
4035	<	funs.add((y) -> m.thenApply(y, new IncFunction(m)));
4036	<
4037	<	funs.add((y) -> m.runAfterEither(y, incomplete, new Noop(m)));
4038	<	funs.add((y) -> m.acceptEither(y, incomplete, new NoopConsumer(m)));
4039	<	funs.add((y) -> m.applyToEither(y, incomplete, new IncFunction(m)));
4040	<
4041	<	funs.add((y) -> m.runAfterBoth(y, v42, new Noop(m)));
4042	<	funs.add((y) -> m.thenAcceptBoth(y, v42, new SubtractAction(m)));
4043	<	funs.add((y) -> m.thenCombine(y, v42, new SubtractFunction(m)));
4044	<
4045	<	funs.add((y) -> m.whenComplete(y, (Integer x, Throwable t) -> {}));
4046	<
4047	<	funs.add((y) -> m.thenCompose(y, new CompletableFutureInc(m)));
4048	<
4049	<	funs.add((y) -> CompletableFuture.allOf(new CompletableFuture<?>[] {y, v42}));
4050	<	funs.add((y) -> CompletableFuture.anyOf(new CompletableFuture<?>[] {y, incomplete}));
4033	>	funs.add(y -> m.thenRun(y, noopRunnable));
4034	>	funs.add(y -> m.thenAccept(y, noopConsumer));
4035	>	funs.add(y -> m.thenApply(y, incFunction));
4036	>
4037	>	funs.add(y -> m.runAfterEither(y, incomplete, noopRunnable));
4038	>	funs.add(y -> m.acceptEither(y, incomplete, noopConsumer));
4039	>	funs.add(y -> m.applyToEither(y, incomplete, incFunction));
4040	>
4041	>	funs.add(y -> m.runAfterBoth(y, v42, noopRunnable));
4042	>	funs.add(y -> m.runAfterBoth(v42, y, noopRunnable));
4043	>	funs.add(y -> m.thenAcceptBoth(y, v42, new SubtractAction(m)));
4044	>	funs.add(y -> m.thenAcceptBoth(v42, y, new SubtractAction(m)));
4045	>	funs.add(y -> m.thenCombine(y, v42, new SubtractFunction(m)));
4046	>	funs.add(y -> m.thenCombine(v42, y, new SubtractFunction(m)));
4047	>
4048	>	funs.add(y -> m.whenComplete(y, (Integer r, Throwable t) -> {}));
4049	>
4050	>	funs.add(y -> m.thenCompose(y, new CompletableFutureInc(m)));
4051	>
4052	>	funs.add(y -> CompletableFuture.allOf(y));
4053	>	funs.add(y -> CompletableFuture.allOf(y, v42));
4054	>	funs.add(y -> CompletableFuture.allOf(v42, y));
4055	>	funs.add(y -> CompletableFuture.anyOf(y));
4056	>	funs.add(y -> CompletableFuture.anyOf(y, incomplete));
4057	>	funs.add(y -> CompletableFuture.anyOf(incomplete, y));
4058
4059		for (Function<CompletableFuture<Integer>, CompletableFuture<?>>
4060		fun : funs) {
4061		CompletableFuture<Integer> f = new CompletableFuture<>();
4062		f.completeExceptionally(ex);
4063	<	CompletableFuture<Integer> src = m.thenApply(f, new IncFunction(m));
4063	>	CompletableFuture<Integer> src = m.thenApply(f, incFunction);
4064		checkCompletedWithWrappedException(src, ex);
4065		CompletableFuture<?> dep = fun.apply(src);
4066		checkCompletedWithWrappedException(dep, ex);
#	Line 3677 | Line 4070 | public class CompletableFutureTest exten
4070		for (Function<CompletableFuture<Integer>, CompletableFuture<?>>
4071		fun : funs) {
4072		CompletableFuture<Integer> f = new CompletableFuture<>();
4073	<	CompletableFuture<Integer> src = m.thenApply(f, new IncFunction(m));
4073	>	CompletableFuture<Integer> src = m.thenApply(f, incFunction);
4074		CompletableFuture<?> dep = fun.apply(src);
4075		f.completeExceptionally(ex);
4076		checkCompletedWithWrappedException(src, ex);
#	Line 3691 | Line 4084 | public class CompletableFutureTest exten
4084		CompletableFuture<Integer> f = new CompletableFuture<>();
4085		f.cancel(mayInterruptIfRunning);
4086		checkCancelled(f);
4087	<	CompletableFuture<Integer> src = m.thenApply(f, new IncFunction(m));
4087	>	CompletableFuture<Integer> src = m.thenApply(f, incFunction);
4088		checkCompletedWithWrappedCancellationException(src);
4089		CompletableFuture<?> dep = fun.apply(src);
4090		checkCompletedWithWrappedCancellationException(dep);
#	Line 3702 | Line 4095 | public class CompletableFutureTest exten
4095		for (Function<CompletableFuture<Integer>, CompletableFuture<?>>
4096		fun : funs) {
4097		CompletableFuture<Integer> f = new CompletableFuture<>();
4098	<	CompletableFuture<Integer> src = m.thenApply(f, new IncFunction(m));
4098	>	CompletableFuture<Integer> src = m.thenApply(f, incFunction);
4099		CompletableFuture<?> dep = fun.apply(src);
4100		f.cancel(mayInterruptIfRunning);
4101		checkCancelled(f);
#	Line 3712 | Line 4105 | public class CompletableFutureTest exten
4105		}
4106		}}
4107
4108	+	/**
4109	+	* Minimal completion stages throw UOE for most non-CompletionStage methods
4110	+	*/
4111	+	public void testMinimalCompletionStage_minimality() {
4112	+	if (!testImplementationDetails) return;
4113	+	Function<Method, String> toSignature =
4114	+	method -> method.getName() + Arrays.toString(method.getParameterTypes());
4115	+	Predicate<Method> isNotStatic =
4116	+	method -> (method.getModifiers() & Modifier.STATIC) == 0;
4117	+	List<Method> minimalMethods =
4118	+	Stream.of(Object.class, CompletionStage.class)
4119	+	.flatMap(klazz -> Stream.of(klazz.getMethods()))
4120	+	.filter(isNotStatic)
4121	+	.collect(Collectors.toList());
4122	+	// Methods from CompletableFuture permitted NOT to throw UOE
4123	+	String[] signatureWhitelist = {
4124	+	"newIncompleteFuture[]",
4125	+	"defaultExecutor[]",
4126	+	"minimalCompletionStage[]",
4127	+	"copy[]",
4128	+	};
4129	+	Set<String> permittedMethodSignatures =
4130	+	Stream.concat(minimalMethods.stream().map(toSignature),
4131	+	Stream.of(signatureWhitelist))
4132	+	.collect(Collectors.toSet());
4133	+	List<Method> allMethods = Stream.of(CompletableFuture.class.getMethods())
4134	+	.filter(isNotStatic)
4135	+	.filter(method -> !permittedMethodSignatures.contains(toSignature.apply(method)))
4136	+	.collect(Collectors.toList());
4137	+
4138	+	List<CompletionStage<Integer>> stages = new ArrayList<>();
4139	+	CompletionStage<Integer> min =
4140	+	new CompletableFuture<Integer>().minimalCompletionStage();
4141	+	stages.add(min);
4142	+	stages.add(min.thenApply(x -> x));
4143	+	stages.add(CompletableFuture.completedStage(1));
4144	+	stages.add(CompletableFuture.failedStage(new CFException()));
4145	+
4146	+	List<Method> bugs = new ArrayList<>();
4147	+	for (Method method : allMethods) {
4148	+	Class<?>[] parameterTypes = method.getParameterTypes();
4149	+	Object[] args = new Object[parameterTypes.length];
4150	+	// Manufacture boxed primitives for primitive params
4151	+	for (int i = 0; i < args.length; i++) {
4152	+	Class<?> type = parameterTypes[i];
4153	+	if (parameterTypes[i] == boolean.class)
4154	+	args[i] = false;
4155	+	else if (parameterTypes[i] == int.class)
4156	+	args[i] = 0;
4157	+	else if (parameterTypes[i] == long.class)
4158	+	args[i] = 0L;
4159	+	}
4160	+	for (CompletionStage<Integer> stage : stages) {
4161	+	try {
4162	+	method.invoke(stage, args);
4163	+	bugs.add(method);
4164	+	}
4165	+	catch (java.lang.reflect.InvocationTargetException expected) {
4166	+	if (! (expected.getCause() instanceof UnsupportedOperationException)) {
4167	+	bugs.add(method);
4168	+	// expected.getCause().printStackTrace();
4169	+	}
4170	+	}
4171	+	catch (ReflectiveOperationException bad) { throw new Error(bad); }
4172	+	}
4173	+	}
4174	+	if (!bugs.isEmpty())
4175	+	throw new Error("Methods did not throw UOE: " + bugs);
4176	+	}
4177	+
4178	+	/**
4179	+	* minimalStage.toCompletableFuture() returns a CompletableFuture that
4180	+	* is completed normally, with the same value, when source is.
4181	+	*/
4182	+	public void testMinimalCompletionStage_toCompletableFuture_normalCompletion() {
4183	+	for (boolean createIncomplete : new boolean[] { true, false })
4184	+	for (Integer v1 : new Integer[] { 1, null })
4185	+	{
4186	+	CompletableFuture<Integer> f = new CompletableFuture<>();
4187	+	CompletionStage<Integer> minimal = f.minimalCompletionStage();
4188	+	if (!createIncomplete) assertTrue(f.complete(v1));
4189	+	CompletableFuture<Integer> g = minimal.toCompletableFuture();
4190	+	if (createIncomplete) {
4191	+	checkIncomplete(f);
4192	+	checkIncomplete(g);
4193	+	assertTrue(f.complete(v1));
4194	+	}
4195	+	checkCompletedNormally(f, v1);
4196	+	checkCompletedNormally(g, v1);
4197	+	}}
4198	+
4199	+	/**
4200	+	* minimalStage.toCompletableFuture() returns a CompletableFuture that
4201	+	* is completed exceptionally when source is.
4202	+	*/
4203	+	public void testMinimalCompletionStage_toCompletableFuture_exceptionalCompletion() {
4204	+	for (boolean createIncomplete : new boolean[] { true, false })
4205	+	{
4206	+	CFException ex = new CFException();
4207	+	CompletableFuture<Integer> f = new CompletableFuture<>();
4208	+	CompletionStage<Integer> minimal = f.minimalCompletionStage();
4209	+	if (!createIncomplete) f.completeExceptionally(ex);
4210	+	CompletableFuture<Integer> g = minimal.toCompletableFuture();
4211	+	if (createIncomplete) {
4212	+	checkIncomplete(f);
4213	+	checkIncomplete(g);
4214	+	f.completeExceptionally(ex);
4215	+	}
4216	+	checkCompletedExceptionally(f, ex);
4217	+	checkCompletedWithWrappedException(g, ex);
4218	+	}}
4219	+
4220	+	/**
4221	+	* minimalStage.toCompletableFuture() gives mutable CompletableFuture
4222	+	*/
4223	+	public void testMinimalCompletionStage_toCompletableFuture_mutable() {
4224	+	for (Integer v1 : new Integer[] { 1, null })
4225	+	{
4226	+	CompletableFuture<Integer> f = new CompletableFuture<>();
4227	+	CompletionStage minimal = f.minimalCompletionStage();
4228	+	CompletableFuture<Integer> g = minimal.toCompletableFuture();
4229	+	assertTrue(g.complete(v1));
4230	+	checkCompletedNormally(g, v1);
4231	+	checkIncomplete(f);
4232	+	checkIncomplete(minimal.toCompletableFuture());
4233	+	}}
4234	+
4235	+	/**
4236	+	* minimalStage.toCompletableFuture().join() awaits completion
4237	+	*/
4238	+	public void testMinimalCompletionStage_toCompletableFuture_join() throws Exception {
4239	+	for (boolean createIncomplete : new boolean[] { true, false })
4240	+	for (Integer v1 : new Integer[] { 1, null })
4241	+	{
4242	+	CompletableFuture<Integer> f = new CompletableFuture<>();
4243	+	if (!createIncomplete) assertTrue(f.complete(v1));
4244	+	CompletionStage<Integer> minimal = f.minimalCompletionStage();
4245	+	if (createIncomplete) assertTrue(f.complete(v1));
4246	+	assertEquals(v1, minimal.toCompletableFuture().join());
4247	+	assertEquals(v1, minimal.toCompletableFuture().get());
4248	+	checkCompletedNormally(minimal.toCompletableFuture(), v1);
4249	+	}}
4250	+
4251	+	/**
4252	+	* Completion of a toCompletableFuture copy of a minimal stage
4253	+	* does not complete its source.
4254	+	*/
4255	+	public void testMinimalCompletionStage_toCompletableFuture_oneWayPropagation() {
4256	+	CompletableFuture<Integer> f = new CompletableFuture<>();
4257	+	CompletionStage<Integer> g = f.minimalCompletionStage();
4258	+	assertTrue(g.toCompletableFuture().complete(1));
4259	+	assertTrue(g.toCompletableFuture().complete(null));
4260	+	assertTrue(g.toCompletableFuture().cancel(true));
4261	+	assertTrue(g.toCompletableFuture().cancel(false));
4262	+	assertTrue(g.toCompletableFuture().completeExceptionally(new CFException()));
4263	+	checkIncomplete(g.toCompletableFuture());
4264	+	f.complete(1);
4265	+	checkCompletedNormally(g.toCompletableFuture(), 1);
4266	+	}
4267	+
4268	+	/** Demo utility method for external reliable toCompletableFuture */
4269	+	static <T> CompletableFuture<T> toCompletableFuture(CompletionStage<T> stage) {
4270	+	CompletableFuture<T> f = new CompletableFuture<>();
4271	+	stage.handle((T t, Throwable ex) -> {
4272	+	if (ex != null) f.completeExceptionally(ex);
4273	+	else f.complete(t);
4274	+	return null;
4275	+	});
4276	+	return f;
4277	+	}
4278	+
4279	+	/** Demo utility method to join a CompletionStage */
4280	+	static <T> T join(CompletionStage<T> stage) {
4281	+	return toCompletableFuture(stage).join();
4282	+	}
4283	+
4284	+	/**
4285	+	* Joining a minimal stage "by hand" works
4286	+	*/
4287	+	public void testMinimalCompletionStage_join_by_hand() {
4288	+	for (boolean createIncomplete : new boolean[] { true, false })
4289	+	for (Integer v1 : new Integer[] { 1, null })
4290	+	{
4291	+	CompletableFuture<Integer> f = new CompletableFuture<>();
4292	+	CompletionStage<Integer> minimal = f.minimalCompletionStage();
4293	+	CompletableFuture<Integer> g = new CompletableFuture<>();
4294	+	if (!createIncomplete) assertTrue(f.complete(v1));
4295	+	minimal.thenAccept(x -> g.complete(x));
4296	+	if (createIncomplete) assertTrue(f.complete(v1));
4297	+	g.join();
4298	+	checkCompletedNormally(g, v1);
4299	+	checkCompletedNormally(f, v1);
4300	+	assertEquals(v1, join(minimal));
4301	+	}}
4302	+
4303	+	static class Monad {
4304	+	static class ZeroException extends RuntimeException {
4305	+	public ZeroException() { super("monadic zero"); }
4306	+	}
4307	+	// "return", "unit"
4308	+	static <T> CompletableFuture<T> unit(T value) {
4309	+	return completedFuture(value);
4310	+	}
4311	+	// monadic zero ?
4312	+	static <T> CompletableFuture<T> zero() {
4313	+	return failedFuture(new ZeroException());
4314	+	}
4315	+	// >=>
4316	+	static <T,U,V> Function<T, CompletableFuture<V>> compose
4317	+	(Function<T, CompletableFuture<U>> f,
4318	+	Function<U, CompletableFuture<V>> g) {
4319	+	return x -> f.apply(x).thenCompose(g);
4320	+	}
4321	+
4322	+	static void assertZero(CompletableFuture<?> f) {
4323	+	try {
4324	+	f.getNow(null);
4325	+	throw new AssertionError("should throw");
4326	+	} catch (CompletionException success) {
4327	+	assertTrue(success.getCause() instanceof ZeroException);
4328	+	}
4329	+	}
4330	+
4331	+	static <T> void assertFutureEquals(CompletableFuture<T> f,
4332	+	CompletableFuture<T> g) {
4333	+	T fval = null, gval = null;
4334	+	Throwable fex = null, gex = null;
4335	+
4336	+	try { fval = f.get(); }
4337	+	catch (ExecutionException ex) { fex = ex.getCause(); }
4338	+	catch (Throwable ex) { fex = ex; }
4339	+
4340	+	try { gval = g.get(); }
4341	+	catch (ExecutionException ex) { gex = ex.getCause(); }
4342	+	catch (Throwable ex) { gex = ex; }
4343	+
4344	+	if (fex != null || gex != null)
4345	+	assertSame(fex.getClass(), gex.getClass());
4346	+	else
4347	+	assertEquals(fval, gval);
4348	+	}
4349	+
4350	+	static class PlusFuture<T> extends CompletableFuture<T> {
4351	+	AtomicReference<Throwable> firstFailure = new AtomicReference<>(null);
4352	+	}
4353	+
4354	+	/** Implements "monadic plus". */
4355	+	static <T> CompletableFuture<T> plus(CompletableFuture<? extends T> f,
4356	+	CompletableFuture<? extends T> g) {
4357	+	PlusFuture<T> plus = new PlusFuture<T>();
4358	+	BiConsumer<T, Throwable> action = (T result, Throwable ex) -> {
4359	+	try {
4360	+	if (ex == null) {
4361	+	if (plus.complete(result))
4362	+	if (plus.firstFailure.get() != null)
4363	+	plus.firstFailure.set(null);
4364	+	}
4365	+	else if (plus.firstFailure.compareAndSet(null, ex)) {
4366	+	if (plus.isDone())
4367	+	plus.firstFailure.set(null);
4368	+	}
4369	+	else {
4370	+	// first failure has precedence
4371	+	Throwable first = plus.firstFailure.getAndSet(null);
4372	+
4373	+	// may fail with "Self-suppression not permitted"
4374	+	try { first.addSuppressed(ex); }
4375	+	catch (Exception ignored) {}
4376	+
4377	+	plus.completeExceptionally(first);
4378	+	}
4379	+	} catch (Throwable unexpected) {
4380	+	plus.completeExceptionally(unexpected);
4381	+	}
4382	+	};
4383	+	f.whenComplete(action);
4384	+	g.whenComplete(action);
4385	+	return plus;
4386	+	}
4387	+	}
4388	+
4389	+	/**
4390	+	* CompletableFuture is an additive monad - sort of.
4391	+	* https://en.wikipedia.org/wiki/Monad_(functional_programming)#Additive_monads
4392	+	*/
4393	+	public void testAdditiveMonad() throws Throwable {
4394	+	Function<Long, CompletableFuture<Long>> unit = Monad::unit;
4395	+	CompletableFuture<Long> zero = Monad.zero();
4396	+
4397	+	// Some mutually non-commutative functions
4398	+	Function<Long, CompletableFuture<Long>> triple
4399	+	= x -> Monad.unit(3 * x);
4400	+	Function<Long, CompletableFuture<Long>> inc
4401	+	= x -> Monad.unit(x + 1);
4402	+
4403	+	// unit is a right identity: m >>= unit === m
4404	+	Monad.assertFutureEquals(inc.apply(5L).thenCompose(unit),
4405	+	inc.apply(5L));
4406	+	// unit is a left identity: (unit x) >>= f === f x
4407	+	Monad.assertFutureEquals(unit.apply(5L).thenCompose(inc),
4408	+	inc.apply(5L));
4409	+
4410	+	// associativity: (m >>= f) >>= g === m >>= ( \x -> (f x >>= g) )
4411	+	Monad.assertFutureEquals(
4412	+	unit.apply(5L).thenCompose(inc).thenCompose(triple),
4413	+	unit.apply(5L).thenCompose(x -> inc.apply(x).thenCompose(triple)));
4414	+
4415	+	// The case for CompletableFuture as an additive monad is weaker...
4416	+
4417	+	// zero is a monadic zero
4418	+	Monad.assertZero(zero);
4419	+
4420	+	// left zero: zero >>= f === zero
4421	+	Monad.assertZero(zero.thenCompose(inc));
4422	+	// right zero: f >>= (\x -> zero) === zero
4423	+	Monad.assertZero(inc.apply(5L).thenCompose(x -> zero));
4424	+
4425	+	// f plus zero === f
4426	+	Monad.assertFutureEquals(Monad.unit(5L),
4427	+	Monad.plus(Monad.unit(5L), zero));
4428	+	// zero plus f === f
4429	+	Monad.assertFutureEquals(Monad.unit(5L),
4430	+	Monad.plus(zero, Monad.unit(5L)));
4431	+	// zero plus zero === zero
4432	+	Monad.assertZero(Monad.plus(zero, zero));
4433	+	{
4434	+	CompletableFuture<Long> f = Monad.plus(Monad.unit(5L),
4435	+	Monad.unit(8L));
4436	+	// non-determinism
4437	+	assertTrue(f.get() == 5L || f.get() == 8L);
4438	+	}
4439	+
4440	+	CompletableFuture<Long> godot = new CompletableFuture<>();
4441	+	// f plus godot === f (doesn't wait for godot)
4442	+	Monad.assertFutureEquals(Monad.unit(5L),
4443	+	Monad.plus(Monad.unit(5L), godot));
4444	+	// godot plus f === f (doesn't wait for godot)
4445	+	Monad.assertFutureEquals(Monad.unit(5L),
4446	+	Monad.plus(godot, Monad.unit(5L)));
4447	+	}
4448	+
4449	+	/** Test long recursive chains of CompletableFutures with cascading completions */
4450	+	@SuppressWarnings("FutureReturnValueIgnored")
4451	+	public void testRecursiveChains() throws Throwable {
4452	+	for (ExecutionMode m : ExecutionMode.values())
4453	+	for (boolean addDeadEnds : new boolean[] { true, false })
4454	+	{
4455	+	final int val = 42;
4456	+	final int n = expensiveTests ? 1_000 : 2;
4457	+	CompletableFuture<Integer> head = new CompletableFuture<>();
4458	+	CompletableFuture<Integer> tail = head;
4459	+	for (int i = 0; i < n; i++) {
4460	+	if (addDeadEnds) m.thenApply(tail, v -> v + 1);
4461	+	tail = m.thenApply(tail, v -> v + 1);
4462	+	if (addDeadEnds) m.applyToEither(tail, tail, v -> v + 1);
4463	+	tail = m.applyToEither(tail, tail, v -> v + 1);
4464	+	if (addDeadEnds) m.thenCombine(tail, tail, (v, w) -> v + 1);
4465	+	tail = m.thenCombine(tail, tail, (v, w) -> v + 1);
4466	+	}
4467	+	head.complete(val);
4468	+	assertEquals(val + 3 * n, (int) tail.join());
4469	+	}}
4470	+
4471	+	/**
4472	+	* A single CompletableFuture with many dependents.
4473	+	* A demo of scalability - runtime is O(n).
4474	+	*/
4475	+	@SuppressWarnings("FutureReturnValueIgnored")
4476	+	public void testManyDependents() throws Throwable {
4477	+	final int n = expensiveTests ? 1_000_000 : 10;
4478	+	final CompletableFuture<Void> head = new CompletableFuture<>();
4479	+	final CompletableFuture<Void> complete = CompletableFuture.completedFuture((Void)null);
4480	+	final AtomicInteger count = new AtomicInteger(0);
4481	+	for (int i = 0; i < n; i++) {
4482	+	head.thenRun(() -> count.getAndIncrement());
4483	+	head.thenAccept(x -> count.getAndIncrement());
4484	+	head.thenApply(x -> count.getAndIncrement());
4485	+
4486	+	head.runAfterBoth(complete, () -> count.getAndIncrement());
4487	+	head.thenAcceptBoth(complete, (x, y) -> count.getAndIncrement());
4488	+	head.thenCombine(complete, (x, y) -> count.getAndIncrement());
4489	+	complete.runAfterBoth(head, () -> count.getAndIncrement());
4490	+	complete.thenAcceptBoth(head, (x, y) -> count.getAndIncrement());
4491	+	complete.thenCombine(head, (x, y) -> count.getAndIncrement());
4492	+
4493	+	head.runAfterEither(new CompletableFuture<Void>(), () -> count.getAndIncrement());
4494	+	head.acceptEither(new CompletableFuture<Void>(), x -> count.getAndIncrement());
4495	+	head.applyToEither(new CompletableFuture<Void>(), x -> count.getAndIncrement());
4496	+	new CompletableFuture<Void>().runAfterEither(head, () -> count.getAndIncrement());
4497	+	new CompletableFuture<Void>().acceptEither(head, x -> count.getAndIncrement());
4498	+	new CompletableFuture<Void>().applyToEither(head, x -> count.getAndIncrement());
4499	+	}
4500	+	head.complete(null);
4501	+	assertEquals(5 * 3 * n, count.get());
4502	+	}
4503	+
4504	+	/** ant -Dvmoptions=-Xmx8m -Djsr166.expensiveTests=true -Djsr166.tckTestClass=CompletableFutureTest tck */
4505	+	@SuppressWarnings("FutureReturnValueIgnored")
4506	+	public void testCoCompletionGarbageRetention() throws Throwable {
4507	+	final int n = expensiveTests ? 1_000_000 : 10;
4508	+	final CompletableFuture<Integer> incomplete = new CompletableFuture<>();
4509	+	CompletableFuture<Integer> f;
4510	+	for (int i = 0; i < n; i++) {
4511	+	f = new CompletableFuture<>();
4512	+	f.runAfterEither(incomplete, () -> {});
4513	+	f.complete(null);
4514	+
4515	+	f = new CompletableFuture<>();
4516	+	f.acceptEither(incomplete, x -> {});
4517	+	f.complete(null);
4518	+
4519	+	f = new CompletableFuture<>();
4520	+	f.applyToEither(incomplete, x -> x);
4521	+	f.complete(null);
4522	+
4523	+	f = new CompletableFuture<>();
4524	+	CompletableFuture.anyOf(f, incomplete);
4525	+	f.complete(null);
4526	+	}
4527	+
4528	+	for (int i = 0; i < n; i++) {
4529	+	f = new CompletableFuture<>();
4530	+	incomplete.runAfterEither(f, () -> {});
4531	+	f.complete(null);
4532	+
4533	+	f = new CompletableFuture<>();
4534	+	incomplete.acceptEither(f, x -> {});
4535	+	f.complete(null);
4536	+
4537	+	f = new CompletableFuture<>();
4538	+	incomplete.applyToEither(f, x -> x);
4539	+	f.complete(null);
4540	+
4541	+	f = new CompletableFuture<>();
4542	+	CompletableFuture.anyOf(incomplete, f);
4543	+	f.complete(null);
4544	+	}
4545	+	}
4546	+
4547	+	/**
4548	+	* Reproduction recipe for:
4549	+	* 8160402: Garbage retention with CompletableFuture.anyOf
4550	+	* 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
4551	+	*/
4552	+	public void testAnyOfGarbageRetention() throws Throwable {
4553	+	for (Integer v : new Integer[] { 1, null })
4554	+	{
4555	+	final int n = expensiveTests ? 100_000 : 10;
4556	+	CompletableFuture<Integer>[] fs
4557	+	= (CompletableFuture<Integer>[]) new CompletableFuture<?>[100];
4558	+	for (int i = 0; i < fs.length; i++)
4559	+	fs[i] = new CompletableFuture<>();
4560	+	fs[fs.length - 1].complete(v);
4561	+	for (int i = 0; i < n; i++)
4562	+	checkCompletedNormally(CompletableFuture.anyOf(fs), v);
4563	+	}}
4564	+
4565	+	/**
4566	+	* Checks for garbage retention with allOf.
4567	+	*
4568	+	* As of 2016-07, fails with OOME:
4569	+	* ant -Dvmoptions=-Xmx8m -Djsr166.expensiveTests=true -Djsr166.tckTestClass=CompletableFutureTest -Djsr166.methodFilter=testCancelledAllOfGarbageRetention tck
4570	+	*/
4571	+	public void testCancelledAllOfGarbageRetention() throws Throwable {
4572	+	final int n = expensiveTests ? 100_000 : 10;
4573	+	CompletableFuture<Integer>[] fs
4574	+	= (CompletableFuture<Integer>[]) new CompletableFuture<?>[100];
4575	+	for (int i = 0; i < fs.length; i++)
4576	+	fs[i] = new CompletableFuture<>();
4577	+	for (int i = 0; i < n; i++)
4578	+	assertTrue(CompletableFuture.allOf(fs).cancel(false));
4579	+	}
4580	+
4581	+	/**
4582	+	* Checks for garbage retention when a dependent future is
4583	+	* cancelled and garbage-collected.
4584	+	* 8161600: Garbage retention when source CompletableFutures are never completed
4585	+	*
4586	+	* As of 2016-07, fails with OOME:
4587	+	* ant -Dvmoptions=-Xmx8m -Djsr166.expensiveTests=true -Djsr166.tckTestClass=CompletableFutureTest -Djsr166.methodFilter=testCancelledGarbageRetention tck
4588	+	*/
4589	+	public void testCancelledGarbageRetention() throws Throwable {
4590	+	final int n = expensiveTests ? 100_000 : 10;
4591	+	CompletableFuture<Integer> neverCompleted = new CompletableFuture<>();
4592	+	for (int i = 0; i < n; i++)
4593	+	assertTrue(neverCompleted.thenRun(() -> {}).cancel(true));
4594	+	}
4595	+
4596	+	/**
4597	+	* Checks for garbage retention when MinimalStage.toCompletableFuture()
4598	+	* is invoked many times.
4599	+	* 8161600: Garbage retention when source CompletableFutures are never completed
4600	+	*
4601	+	* As of 2016-07, fails with OOME:
4602	+	* ant -Dvmoptions=-Xmx8m -Djsr166.expensiveTests=true -Djsr166.tckTestClass=CompletableFutureTest -Djsr166.methodFilter=testToCompletableFutureGarbageRetention tck
4603	+	*/
4604	+	public void testToCompletableFutureGarbageRetention() throws Throwable {
4605	+	final int n = expensiveTests ? 900_000 : 10;
4606	+	CompletableFuture<Integer> neverCompleted = new CompletableFuture<>();
4607	+	CompletionStage minimal = neverCompleted.minimalCompletionStage();
4608	+	for (int i = 0; i < n; i++)
4609	+	assertTrue(minimal.toCompletableFuture().cancel(true));
4610	+	}
4611	+
4612	+	//     static <U> U join(CompletionStage<U> stage) {
4613	+	//         CompletableFuture<U> f = new CompletableFuture<>();
4614	+	//         stage.whenComplete((v, ex) -> {
4615	+	//             if (ex != null) f.completeExceptionally(ex); else f.complete(v);
4616	+	//         });
4617	+	//         return f.join();
4618	+	//     }
4619	+
4620	+	//     static <U> boolean isDone(CompletionStage<U> stage) {
4621	+	//         CompletableFuture<U> f = new CompletableFuture<>();
4622	+	//         stage.whenComplete((v, ex) -> {
4623	+	//             if (ex != null) f.completeExceptionally(ex); else f.complete(v);
4624	+	//         });
4625	+	//         return f.isDone();
4626	+	//     }
4627	+
4628	+	//     static <U> U join2(CompletionStage<U> stage) {
4629	+	//         return stage.toCompletableFuture().copy().join();
4630	+	//     }
4631	+
4632	+	//     static <U> boolean isDone2(CompletionStage<U> stage) {
4633	+	//         return stage.toCompletableFuture().copy().isDone();
4634	+	//     }
4635	+
4636	+	// For testing default implementations
4637	+	// Only non-default interface methods defined.
4638	+	static final class DelegatedCompletionStage<T> implements CompletionStage<T> {
4639	+	final CompletableFuture<T> cf;
4640	+	DelegatedCompletionStage(CompletableFuture<T> cf) { this.cf = cf; }
4641	+	public CompletableFuture<T> toCompletableFuture() {
4642	+	return cf; }
4643	+	public CompletionStage<Void> thenRun
4644	+	(Runnable action) {
4645	+	return cf.thenRun(action); }
4646	+	public CompletionStage<Void> thenRunAsync
4647	+	(Runnable action) {
4648	+	return cf.thenRunAsync(action); }
4649	+	public CompletionStage<Void> thenRunAsync
4650	+	(Runnable action,
4651	+	Executor executor) {
4652	+	return cf.thenRunAsync(action, executor); }
4653	+	public CompletionStage<Void> thenAccept
4654	+	(Consumer<? super T> action) {
4655	+	return cf.thenAccept(action); }
4656	+	public CompletionStage<Void> thenAcceptAsync
4657	+	(Consumer<? super T> action) {
4658	+	return cf.thenAcceptAsync(action); }
4659	+	public CompletionStage<Void> thenAcceptAsync
4660	+	(Consumer<? super T> action,
4661	+	Executor executor) {
4662	+	return cf.thenAcceptAsync(action, executor); }
4663	+	public <U> CompletionStage<U> thenApply
4664	+	(Function<? super T,? extends U> a) {
4665	+	return cf.thenApply(a); }
4666	+	public <U> CompletionStage<U> thenApplyAsync
4667	+	(Function<? super T,? extends U> fn) {
4668	+	return cf.thenApplyAsync(fn); }
4669	+	public <U> CompletionStage<U> thenApplyAsync
4670	+	(Function<? super T,? extends U> fn,
4671	+	Executor executor) {
4672	+	return cf.thenApplyAsync(fn, executor); }
4673	+	public <U,V> CompletionStage<V> thenCombine
4674	+	(CompletionStage<? extends U> other,
4675	+	BiFunction<? super T,? super U,? extends V> fn) {
4676	+	return cf.thenCombine(other, fn); }
4677	+	public <U,V> CompletionStage<V> thenCombineAsync
4678	+	(CompletionStage<? extends U> other,
4679	+	BiFunction<? super T,? super U,? extends V> fn) {
4680	+	return cf.thenCombineAsync(other, fn); }
4681	+	public <U,V> CompletionStage<V> thenCombineAsync
4682	+	(CompletionStage<? extends U> other,
4683	+	BiFunction<? super T,? super U,? extends V> fn,
4684	+	Executor executor) {
4685	+	return cf.thenCombineAsync(other, fn, executor); }
4686	+	public <U> CompletionStage<Void> thenAcceptBoth
4687	+	(CompletionStage<? extends U> other,
4688	+	BiConsumer<? super T, ? super U> action) {
4689	+	return cf.thenAcceptBoth(other, action); }
4690	+	public <U> CompletionStage<Void> thenAcceptBothAsync
4691	+	(CompletionStage<? extends U> other,
4692	+	BiConsumer<? super T, ? super U> action) {
4693	+	return cf.thenAcceptBothAsync(other, action); }
4694	+	public <U> CompletionStage<Void> thenAcceptBothAsync
4695	+	(CompletionStage<? extends U> other,
4696	+	BiConsumer<? super T, ? super U> action,
4697	+	Executor executor) {
4698	+	return cf.thenAcceptBothAsync(other, action, executor); }
4699	+	public CompletionStage<Void> runAfterBoth
4700	+	(CompletionStage<?> other,
4701	+	Runnable action) {
4702	+	return cf.runAfterBoth(other, action); }
4703	+	public CompletionStage<Void> runAfterBothAsync
4704	+	(CompletionStage<?> other,
4705	+	Runnable action) {
4706	+	return cf.runAfterBothAsync(other, action); }
4707	+	public CompletionStage<Void> runAfterBothAsync
4708	+	(CompletionStage<?> other,
4709	+	Runnable action,
4710	+	Executor executor) {
4711	+	return cf.runAfterBothAsync(other, action, executor); }
4712	+	public <U> CompletionStage<U> applyToEither
4713	+	(CompletionStage<? extends T> other,
4714	+	Function<? super T, U> fn) {
4715	+	return cf.applyToEither(other, fn); }
4716	+	public <U> CompletionStage<U> applyToEitherAsync
4717	+	(CompletionStage<? extends T> other,
4718	+	Function<? super T, U> fn) {
4719	+	return cf.applyToEitherAsync(other, fn); }
4720	+	public <U> CompletionStage<U> applyToEitherAsync
4721	+	(CompletionStage<? extends T> other,
4722	+	Function<? super T, U> fn,
4723	+	Executor executor) {
4724	+	return cf.applyToEitherAsync(other, fn, executor); }
4725	+	public CompletionStage<Void> acceptEither
4726	+	(CompletionStage<? extends T> other,
4727	+	Consumer<? super T> action) {
4728	+	return cf.acceptEither(other, action); }
4729	+	public CompletionStage<Void> acceptEitherAsync
4730	+	(CompletionStage<? extends T> other,
4731	+	Consumer<? super T> action) {
4732	+	return cf.acceptEitherAsync(other, action); }
4733	+	public CompletionStage<Void> acceptEitherAsync
4734	+	(CompletionStage<? extends T> other,
4735	+	Consumer<? super T> action,
4736	+	Executor executor) {
4737	+	return cf.acceptEitherAsync(other, action, executor); }
4738	+	public CompletionStage<Void> runAfterEither
4739	+	(CompletionStage<?> other,
4740	+	Runnable action) {
4741	+	return cf.runAfterEither(other, action); }
4742	+	public CompletionStage<Void> runAfterEitherAsync
4743	+	(CompletionStage<?> other,
4744	+	Runnable action) {
4745	+	return cf.runAfterEitherAsync(other, action); }
4746	+	public CompletionStage<Void> runAfterEitherAsync
4747	+	(CompletionStage<?> other,
4748	+	Runnable action,
4749	+	Executor executor) {
4750	+	return cf.runAfterEitherAsync(other, action, executor); }
4751	+	public <U> CompletionStage<U> thenCompose
4752	+	(Function<? super T, ? extends CompletionStage<U>> fn) {
4753	+	return cf.thenCompose(fn); }
4754	+	public <U> CompletionStage<U> thenComposeAsync
4755	+	(Function<? super T, ? extends CompletionStage<U>> fn) {
4756	+	return cf.thenComposeAsync(fn); }
4757	+	public <U> CompletionStage<U> thenComposeAsync
4758	+	(Function<? super T, ? extends CompletionStage<U>> fn,
4759	+	Executor executor) {
4760	+	return cf.thenComposeAsync(fn, executor); }
4761	+	public <U> CompletionStage<U> handle
4762	+	(BiFunction<? super T, Throwable, ? extends U> fn) {
4763	+	return cf.handle(fn); }
4764	+	public <U> CompletionStage<U> handleAsync
4765	+	(BiFunction<? super T, Throwable, ? extends U> fn) {
4766	+	return cf.handleAsync(fn); }
4767	+	public <U> CompletionStage<U> handleAsync
4768	+	(BiFunction<? super T, Throwable, ? extends U> fn,
4769	+	Executor executor) {
4770	+	return cf.handleAsync(fn, executor); }
4771	+	public CompletionStage<T> whenComplete
4772	+	(BiConsumer<? super T, ? super Throwable> action) {
4773	+	return cf.whenComplete(action); }
4774	+	public CompletionStage<T> whenCompleteAsync
4775	+	(BiConsumer<? super T, ? super Throwable> action) {
4776	+	return cf.whenCompleteAsync(action); }
4777	+	public CompletionStage<T> whenCompleteAsync
4778	+	(BiConsumer<? super T, ? super Throwable> action,
4779	+	Executor executor) {
4780	+	return cf.whenCompleteAsync(action, executor); }
4781	+	public CompletionStage<T> exceptionally
4782	+	(Function<Throwable, ? extends T> fn) {
4783	+	return cf.exceptionally(fn); }
4784	+	}
4785	+
4786	+	/**
4787	+	* default-implemented exceptionallyAsync action completes with
4788	+	* function value on source exception
4789	+	*/
4790	+	public void testDefaulExceptionallyAsync_exceptionalCompletion() {
4791	+	for (boolean createIncomplete : new boolean[] { true, false })
4792	+	for (Integer v1 : new Integer[] { 1, null })
4793	+	{
4794	+	final AtomicInteger a = new AtomicInteger(0);
4795	+	final CFException ex = new CFException();
4796	+	final CompletableFuture<Integer> f = new CompletableFuture<>();
4797	+	final DelegatedCompletionStage<Integer> d =
4798	+	new DelegatedCompletionStage<Integer>(f);
4799	+	if (!createIncomplete) f.completeExceptionally(ex);
4800	+	final CompletionStage<Integer> g = d.exceptionallyAsync
4801	+	((Throwable t) -> {
4802	+	threadAssertSame(t, ex);
4803	+	a.getAndIncrement();
4804	+	return v1;
4805	+	});
4806	+	if (createIncomplete) f.completeExceptionally(ex);
4807	+
4808	+	checkCompletedNormally(g.toCompletableFuture(), v1);
4809	+	assertEquals(1, a.get());
4810	+	}}
4811	+
4812	+	/**
4813	+	* Under default implementation, if an "exceptionally action"
4814	+	* throws an exception, it completes exceptionally with that
4815	+	* exception
4816	+	*/
4817	+	public void testDefaulExceptionallyAsync_exceptionalCompletionActionFailed() {
4818	+	for (boolean createIncomplete : new boolean[] { true, false })
4819	+	{
4820	+	final AtomicInteger a = new AtomicInteger(0);
4821	+	final CFException ex1 = new CFException();
4822	+	final CFException ex2 = new CFException();
4823	+	final CompletableFuture<Integer> f = new CompletableFuture<>();
4824	+	final DelegatedCompletionStage<Integer> d =
4825	+	new DelegatedCompletionStage<Integer>(f);
4826	+	if (!createIncomplete) f.completeExceptionally(ex1);
4827	+	final CompletionStage<Integer> g = d.exceptionallyAsync
4828	+	((Throwable t) -> {
4829	+	threadAssertSame(t, ex1);
4830	+	a.getAndIncrement();
4831	+	throw ex2;
4832	+	});
4833	+	if (createIncomplete) f.completeExceptionally(ex1);
4834	+
4835	+	checkCompletedWithWrappedException(g.toCompletableFuture(), ex2);
4836	+	checkCompletedExceptionally(f, ex1);
4837	+	checkCompletedExceptionally(d.toCompletableFuture(), ex1);
4838	+	assertEquals(1, a.get());
4839	+	}}
4840	+
4841	+	/**
4842	+	* defult exceptionallyCompose result completes normally after normal
4843	+	* completion of source
4844	+	*/
4845	+	public void testDefaultExceptionallyCompose_normalCompletion() {
4846	+	for (boolean createIncomplete : new boolean[] { true, false })
4847	+	for (Integer v1 : new Integer[] { 1, null })
4848	+	{
4849	+	final CompletableFuture<Integer> f = new CompletableFuture<>();
4850	+	final ExceptionalCompletableFutureFunction r =
4851	+	new ExceptionalCompletableFutureFunction(ExecutionMode.SYNC);
4852	+	final DelegatedCompletionStage<Integer> d =
4853	+	new DelegatedCompletionStage<Integer>(f);
4854	+	if (!createIncomplete) assertTrue(f.complete(v1));
4855	+	final CompletionStage<Integer> g = d.exceptionallyCompose(r);
4856	+	if (createIncomplete) assertTrue(f.complete(v1));
4857	+
4858	+	checkCompletedNormally(f, v1);
4859	+	checkCompletedNormally(g.toCompletableFuture(), v1);
4860	+	r.assertNotInvoked();
4861	+	}}
4862	+
4863	+	/**
4864	+	* default-implemented exceptionallyCompose result completes
4865	+	* normally after exceptional completion of source
4866	+	*/
4867	+	public void testDefaultExceptionallyCompose_exceptionalCompletion() {
4868	+	for (boolean createIncomplete : new boolean[] { true, false })
4869	+	{
4870	+	final CFException ex = new CFException();
4871	+	final ExceptionalCompletableFutureFunction r =
4872	+	new ExceptionalCompletableFutureFunction(ExecutionMode.SYNC);
4873	+	final CompletableFuture<Integer> f = new CompletableFuture<>();
4874	+	final DelegatedCompletionStage<Integer> d =
4875	+	new DelegatedCompletionStage<Integer>(f);
4876	+	if (!createIncomplete) f.completeExceptionally(ex);
4877	+	final CompletionStage<Integer> g = d.exceptionallyCompose(r);
4878	+	if (createIncomplete) f.completeExceptionally(ex);
4879	+
4880	+	checkCompletedExceptionally(f, ex);
4881	+	checkCompletedNormally(g.toCompletableFuture(), r.value);
4882	+	r.assertInvoked();
4883	+	}}
4884	+
4885	+	/**
4886	+	* default-implemented exceptionallyCompose completes
4887	+	* exceptionally on exception if action does
4888	+	*/
4889	+	public void testDefaultExceptionallyCompose_actionFailed() {
4890	+	for (boolean createIncomplete : new boolean[] { true, false })
4891	+	for (Integer v1 : new Integer[] { 1, null })
4892	+	{
4893	+	final CFException ex = new CFException();
4894	+	final CompletableFuture<Integer> f = new CompletableFuture<>();
4895	+	final FailingExceptionalCompletableFutureFunction r
4896	+	= new FailingExceptionalCompletableFutureFunction(ExecutionMode.SYNC);
4897	+	final DelegatedCompletionStage<Integer> d =
4898	+	new DelegatedCompletionStage<Integer>(f);
4899	+	if (!createIncomplete) f.completeExceptionally(ex);
4900	+	final CompletionStage<Integer> g = d.exceptionallyCompose(r);
4901	+	if (createIncomplete) f.completeExceptionally(ex);
4902	+
4903	+	checkCompletedExceptionally(f, ex);
4904	+	checkCompletedWithWrappedException(g.toCompletableFuture(), r.ex);
4905	+	r.assertInvoked();
4906	+	}}
4907	+
4908	+	/**
4909	+	* defult exceptionallyComposeAsync result completes normally after normal
4910	+	* completion of source
4911	+	*/
4912	+	public void testDefaultExceptionallyComposeAsync_normalCompletion() {
4913	+	for (boolean createIncomplete : new boolean[] { true, false })
4914	+	for (Integer v1 : new Integer[] { 1, null })
4915	+	{
4916	+	final CompletableFuture<Integer> f = new CompletableFuture<>();
4917	+	final ExceptionalCompletableFutureFunction r =
4918	+	new ExceptionalCompletableFutureFunction(ExecutionMode.ASYNC);
4919	+	final DelegatedCompletionStage<Integer> d =
4920	+	new DelegatedCompletionStage<Integer>(f);
4921	+	if (!createIncomplete) assertTrue(f.complete(v1));
4922	+	final CompletionStage<Integer> g = d.exceptionallyComposeAsync(r);
4923	+	if (createIncomplete) assertTrue(f.complete(v1));
4924	+
4925	+	checkCompletedNormally(f, v1);
4926	+	checkCompletedNormally(g.toCompletableFuture(), v1);
4927	+	r.assertNotInvoked();
4928	+	}}
4929	+
4930	+	/**
4931	+	* default-implemented exceptionallyComposeAsync result completes
4932	+	* normally after exceptional completion of source
4933	+	*/
4934	+	public void testDefaultExceptionallyComposeAsync_exceptionalCompletion() {
4935	+	for (boolean createIncomplete : new boolean[] { true, false })
4936	+	{
4937	+	final CFException ex = new CFException();
4938	+	final ExceptionalCompletableFutureFunction r =
4939	+	new ExceptionalCompletableFutureFunction(ExecutionMode.ASYNC);
4940	+	final CompletableFuture<Integer> f = new CompletableFuture<>();
4941	+	final DelegatedCompletionStage<Integer> d =
4942	+	new DelegatedCompletionStage<Integer>(f);
4943	+	if (!createIncomplete) f.completeExceptionally(ex);
4944	+	final CompletionStage<Integer> g = d.exceptionallyComposeAsync(r);
4945	+	if (createIncomplete) f.completeExceptionally(ex);
4946	+
4947	+	checkCompletedExceptionally(f, ex);
4948	+	checkCompletedNormally(g.toCompletableFuture(), r.value);
4949	+	r.assertInvoked();
4950	+	}}
4951	+
4952	+	/**
4953	+	* default-implemented exceptionallyComposeAsync completes
4954	+	* exceptionally on exception if action does
4955	+	*/
4956	+	public void testDefaultExceptionallyComposeAsync_actionFailed() {
4957	+	for (boolean createIncomplete : new boolean[] { true, false })
4958	+	for (Integer v1 : new Integer[] { 1, null })
4959	+	{
4960	+	final CFException ex = new CFException();
4961	+	final CompletableFuture<Integer> f = new CompletableFuture<>();
4962	+	final FailingExceptionalCompletableFutureFunction r
4963	+	= new FailingExceptionalCompletableFutureFunction(ExecutionMode.ASYNC);
4964	+	final DelegatedCompletionStage<Integer> d =
4965	+	new DelegatedCompletionStage<Integer>(f);
4966	+	if (!createIncomplete) f.completeExceptionally(ex);
4967	+	final CompletionStage<Integer> g = d.exceptionallyComposeAsync(r);
4968	+	if (createIncomplete) f.completeExceptionally(ex);
4969	+
4970	+	checkCompletedExceptionally(f, ex);
4971	+	checkCompletedWithWrappedException(g.toCompletableFuture(), r.ex);
4972	+	r.assertInvoked();
4973	+	}}
4974	+
4975	+
4976	+	/**
4977	+	* defult exceptionallyComposeAsync result completes normally after normal
4978	+	* completion of source
4979	+	*/
4980	+	public void testDefaultExceptionallyComposeAsyncExecutor_normalCompletion() {
4981	+	for (boolean createIncomplete : new boolean[] { true, false })
4982	+	for (Integer v1 : new Integer[] { 1, null })
4983	+	{
4984	+	final CompletableFuture<Integer> f = new CompletableFuture<>();
4985	+	final ExceptionalCompletableFutureFunction r =
4986	+	new ExceptionalCompletableFutureFunction(ExecutionMode.EXECUTOR);
4987	+	final DelegatedCompletionStage<Integer> d =
4988	+	new DelegatedCompletionStage<Integer>(f);
4989	+	if (!createIncomplete) assertTrue(f.complete(v1));
4990	+	final CompletionStage<Integer> g = d.exceptionallyComposeAsync(r,  new ThreadExecutor());
4991	+	if (createIncomplete) assertTrue(f.complete(v1));
4992	+
4993	+	checkCompletedNormally(f, v1);
4994	+	checkCompletedNormally(g.toCompletableFuture(), v1);
4995	+	r.assertNotInvoked();
4996	+	}}
4997	+
4998	+	/**
4999	+	* default-implemented exceptionallyComposeAsync result completes
5000	+	* normally after exceptional completion of source
5001	+	*/
5002	+	public void testDefaultExceptionallyComposeAsyncExecutor_exceptionalCompletion() {
5003	+	for (boolean createIncomplete : new boolean[] { true, false })
5004	+	{
5005	+	final CFException ex = new CFException();
5006	+	final ExceptionalCompletableFutureFunction r =
5007	+	new ExceptionalCompletableFutureFunction(ExecutionMode.EXECUTOR);
5008	+	final CompletableFuture<Integer> f = new CompletableFuture<>();
5009	+	final DelegatedCompletionStage<Integer> d =
5010	+	new DelegatedCompletionStage<Integer>(f);
5011	+	if (!createIncomplete) f.completeExceptionally(ex);
5012	+	final CompletionStage<Integer> g = d.exceptionallyComposeAsync(r,  new ThreadExecutor());
5013	+	if (createIncomplete) f.completeExceptionally(ex);
5014	+
5015	+	checkCompletedExceptionally(f, ex);
5016	+	checkCompletedNormally(g.toCompletableFuture(), r.value);
5017	+	r.assertInvoked();
5018	+	}}
5019	+
5020	+	/**
5021	+	* default-implemented exceptionallyComposeAsync completes
5022	+	* exceptionally on exception if action does
5023	+	*/
5024	+	public void testDefaultExceptionallyComposeAsyncExecutor_actionFailed() {
5025	+	for (boolean createIncomplete : new boolean[] { true, false })
5026	+	for (Integer v1 : new Integer[] { 1, null })
5027	+	{
5028	+	final CFException ex = new CFException();
5029	+	final CompletableFuture<Integer> f = new CompletableFuture<>();
5030	+	final FailingExceptionalCompletableFutureFunction r
5031	+	= new FailingExceptionalCompletableFutureFunction(ExecutionMode.EXECUTOR);
5032	+	final DelegatedCompletionStage<Integer> d =
5033	+	new DelegatedCompletionStage<Integer>(f);
5034	+	if (!createIncomplete) f.completeExceptionally(ex);
5035	+	final CompletionStage<Integer> g = d.exceptionallyComposeAsync(r,  new ThreadExecutor());
5036	+	if (createIncomplete) f.completeExceptionally(ex);
5037	+
5038	+	checkCompletedExceptionally(f, ex);
5039	+	checkCompletedWithWrappedException(g.toCompletableFuture(), r.ex);
5040	+	r.assertInvoked();
5041	+	}}
5042	+
5043		}
5044	+

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