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Comparing jsr166/src/test/tck/CompletableFutureTest.java (file contents):
Revision 1.81 by jsr166, Mon Jun 16 17:41:26 2014 UTC vs.
Revision 1.123 by jsr166, Tue Sep 8 19:45:35 2015 UTC

#	Line 5 | Line 5
5		* http://creativecommons.org/publicdomain/zero/1.0/
6		*/
7
8	<	import junit.framework.*;
8	>	import static java.util.concurrent.TimeUnit.MILLISECONDS;
9	>	import static java.util.concurrent.TimeUnit.SECONDS;
10	>
11	>	import java.lang.reflect.Method;
12	>	import java.lang.reflect.Modifier;
13	>
14	>	import java.util.stream.Collectors;
15	>	import java.util.stream.Stream;
16	>
17	>	import java.util.ArrayList;
18	>	import java.util.Arrays;
19	>	import java.util.List;
20	>	import java.util.Objects;
21	>	import java.util.Set;
22		import java.util.concurrent.Callable;
10	–	import java.util.concurrent.Executor;
11	–	import java.util.concurrent.ExecutorService;
12	–	import java.util.concurrent.Executors;
23		import java.util.concurrent.CancellationException;
14	–	import java.util.concurrent.CountDownLatch;
15	–	import java.util.concurrent.ExecutionException;
16	–	import java.util.concurrent.Future;
24		import java.util.concurrent.CompletableFuture;
25		import java.util.concurrent.CompletionException;
26		import java.util.concurrent.CompletionStage;
27	+	import java.util.concurrent.ExecutionException;
28	+	import java.util.concurrent.Executor;
29		import java.util.concurrent.ForkJoinPool;
30		import java.util.concurrent.ForkJoinTask;
31		import java.util.concurrent.TimeoutException;
32	+	import java.util.concurrent.TimeUnit;
33		import java.util.concurrent.atomic.AtomicInteger;
34	<	import static java.util.concurrent.TimeUnit.MILLISECONDS;
25	<	import static java.util.concurrent.TimeUnit.SECONDS;
26	<	import java.util.*;
27	<	import java.util.function.Supplier;
28	<	import java.util.function.Consumer;
34	>	import java.util.concurrent.atomic.AtomicReference;
35		import java.util.function.BiConsumer;
30	–	import java.util.function.Function;
36		import java.util.function.BiFunction;
37	+	import java.util.function.Consumer;
38	+	import java.util.function.Function;
39	+	import java.util.function.Supplier;
40	+
41	+	import junit.framework.Test;
42	+	import junit.framework.TestSuite;
43
44		public class CompletableFutureTest extends JSR166TestCase {
45
46		public static void main(String[] args) {
47	<	junit.textui.TestRunner.run(suite());
47	>	main(suite(), args);
48		}
49		public static Test suite() {
50		return new TestSuite(CompletableFutureTest.class);
#	Line 44 | Line 55 | public class CompletableFutureTest exten
55		void checkIncomplete(CompletableFuture<?> f) {
56		assertFalse(f.isDone());
57		assertFalse(f.isCancelled());
58	<	assertTrue(f.toString().contains("[Not completed]"));
58	>	assertTrue(f.toString().contains("Not completed"));
59		try {
60		assertNull(f.getNow(null));
61		} catch (Throwable fail) { threadUnexpectedException(fail); }
#	Line 57 | Line 68 | public class CompletableFutureTest exten
68		}
69
70		<T> void checkCompletedNormally(CompletableFuture<T> f, T value) {
71	<	try {
72	<	assertEquals(value, f.get(LONG_DELAY_MS, MILLISECONDS));
62	<	} catch (Throwable fail) { threadUnexpectedException(fail); }
71	>	checkTimedGet(f, value);
72	>
73		try {
74		assertEquals(value, f.join());
75		} catch (Throwable fail) { threadUnexpectedException(fail); }
#	Line 75 | Line 85 | public class CompletableFutureTest exten
85		assertTrue(f.toString().contains("[Completed normally]"));
86		}
87
88	<	void checkCompletedWithWrappedCFException(CompletableFuture<?> f) {
89	<	try {
90	<	f.get(LONG_DELAY_MS, MILLISECONDS);
91	<	shouldThrow();
92	<	} catch (ExecutionException success) {
93	<	assertTrue(success.getCause() instanceof CFException);
94	<	} catch (Throwable fail) { threadUnexpectedException(fail); }
95	<	try {
96	<	f.join();
97	<	shouldThrow();
98	<	} catch (CompletionException success) {
99	<	assertTrue(success.getCause() instanceof CFException);
100	<	}
101	<	try {
102	<	f.getNow(null);
103	<	shouldThrow();
104	<	} catch (CompletionException success) {
95	<	assertTrue(success.getCause() instanceof CFException);
88	>	/**
89	>	* Returns the "raw" internal exceptional completion of f,
90	>	* without any additional wrapping with CompletionException.
91	>	*/
92	>	<U> Throwable exceptionalCompletion(CompletableFuture<U> f) {
93	>	// handle (and whenComplete) can distinguish between "direct"
94	>	// and "wrapped" exceptional completion
95	>	return f.handle((U u, Throwable t) -> t).join();
96	>	}
97	>
98	>	void checkCompletedExceptionally(CompletableFuture<?> f,
99	>	boolean wrapped,
100	>	Consumer<Throwable> checker) {
101	>	Throwable cause = exceptionalCompletion(f);
102	>	if (wrapped) {
103	>	assertTrue(cause instanceof CompletionException);
104	>	cause = cause.getCause();
105		}
106	<	try {
98	<	f.get();
99	<	shouldThrow();
100	<	} catch (ExecutionException success) {
101	<	assertTrue(success.getCause() instanceof CFException);
102	<	} catch (Throwable fail) { threadUnexpectedException(fail); }
103	<	assertTrue(f.isDone());
104	<	assertFalse(f.isCancelled());
105	<	assertTrue(f.toString().contains("[Completed exceptionally]"));
106	<	}
106	>	checker.accept(cause);
107
108	<	<U> void checkCompletedExceptionallyWithRootCause(CompletableFuture<U> f,
109	<	Throwable ex) {
108	>	long startTime = System.nanoTime();
109		try {
110		f.get(LONG_DELAY_MS, MILLISECONDS);
111		shouldThrow();
112		} catch (ExecutionException success) {
113	<	assertSame(ex, success.getCause());
113	>	assertSame(cause, success.getCause());
114		} catch (Throwable fail) { threadUnexpectedException(fail); }
115	+	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS / 2);
116	+
117		try {
118		f.join();
119		shouldThrow();
120		} catch (CompletionException success) {
121	<	assertSame(ex, success.getCause());
122	<	}
121	>	assertSame(cause, success.getCause());
122	>	} catch (Throwable fail) { threadUnexpectedException(fail); }
123	>
124		try {
125		f.getNow(null);
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.get();
133		shouldThrow();
134		} catch (ExecutionException success) {
135	<	assertSame(ex, success.getCause());
135	>	assertSame(cause, success.getCause());
136		} catch (Throwable fail) { threadUnexpectedException(fail); }
137
135	–	assertTrue(f.isDone());
138		assertFalse(f.isCancelled());
139	+	assertTrue(f.isDone());
140	+	assertTrue(f.isCompletedExceptionally());
141		assertTrue(f.toString().contains("[Completed exceptionally]"));
142		}
143
144	<	<U> void checkCompletedWithWrappedException(CompletableFuture<U> f,
145	<	Throwable ex) {
146	<	checkCompletedExceptionallyWithRootCause(f, ex);
143	<	try {
144	<	CompletableFuture<Throwable> spy = f.handle
145	<	((U u, Throwable t) -> t);
146	<	assertTrue(spy.join() instanceof CompletionException);
147	<	assertSame(ex, spy.join().getCause());
148	<	} catch (Throwable fail) { threadUnexpectedException(fail); }
144	>	void checkCompletedWithWrappedCFException(CompletableFuture<?> f) {
145	>	checkCompletedExceptionally(f, true,
146	>	(t) -> assertTrue(t instanceof CFException));
147		}
148
149	<	<U> void checkCompletedExceptionally(CompletableFuture<U> f, Throwable ex) {
150	<	checkCompletedExceptionallyWithRootCause(f, ex);
151	<	try {
152	<	CompletableFuture<Throwable> spy = f.handle
153	<	((U u, Throwable t) -> t);
154	<	assertSame(ex, spy.join());
155	<	} catch (Throwable fail) { threadUnexpectedException(fail); }
149	>	void checkCompletedWithWrappedCancellationException(CompletableFuture<?> f) {
150	>	checkCompletedExceptionally(f, true,
151	>	(t) -> assertTrue(t instanceof CancellationException));
152	>	}
153	>
154	>	void checkCompletedWithTimeoutException(CompletableFuture<?> f) {
155	>	checkCompletedExceptionally(f, false,
156	>	(t) -> assertTrue(t instanceof TimeoutException));
157	>	}
158	>
159	>	void checkCompletedWithWrappedException(CompletableFuture<?> f,
160	>	Throwable ex) {
161	>	checkCompletedExceptionally(f, true, (t) -> assertSame(t, ex));
162	>	}
163	>
164	>	void checkCompletedExceptionally(CompletableFuture<?> f, Throwable ex) {
165	>	checkCompletedExceptionally(f, false, (t) -> assertSame(t, ex));
166		}
167
168		void checkCancelled(CompletableFuture<?> f) {
169	+	long startTime = System.nanoTime();
170		try {
171		f.get(LONG_DELAY_MS, MILLISECONDS);
172		shouldThrow();
173		} catch (CancellationException success) {
174		} catch (Throwable fail) { threadUnexpectedException(fail); }
175	+	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS / 2);
176	+
177		try {
178		f.join();
179		shouldThrow();
#	Line 176 | Line 187 | public class CompletableFutureTest exten
187		shouldThrow();
188		} catch (CancellationException success) {
189		} catch (Throwable fail) { threadUnexpectedException(fail); }
179	–	assertTrue(f.isDone());
180	–	assertTrue(f.isCompletedExceptionally());
181	–	assertTrue(f.isCancelled());
182	–	assertTrue(f.toString().contains("[Completed exceptionally]"));
183	–	}
190
191	<	void checkCompletedWithWrappedCancellationException(CompletableFuture<?> f) {
192	<	try {
187	<	f.get(LONG_DELAY_MS, MILLISECONDS);
188	<	shouldThrow();
189	<	} catch (ExecutionException success) {
190	<	assertTrue(success.getCause() instanceof CancellationException);
191	<	} catch (Throwable fail) { threadUnexpectedException(fail); }
192	<	try {
193	<	f.join();
194	<	shouldThrow();
195	<	} catch (CompletionException success) {
196	<	assertTrue(success.getCause() instanceof CancellationException);
197	<	}
198	<	try {
199	<	f.getNow(null);
200	<	shouldThrow();
201	<	} catch (CompletionException success) {
202	<	assertTrue(success.getCause() instanceof CancellationException);
203	<	}
204	<	try {
205	<	f.get();
206	<	shouldThrow();
207	<	} catch (ExecutionException success) {
208	<	assertTrue(success.getCause() instanceof CancellationException);
209	<	} catch (Throwable fail) { threadUnexpectedException(fail); }
191	>	assertTrue(exceptionalCompletion(f) instanceof CancellationException);
192	>
193		assertTrue(f.isDone());
211	–	assertFalse(f.isCancelled());
194		assertTrue(f.isCompletedExceptionally());
195	+	assertTrue(f.isCancelled());
196		assertTrue(f.toString().contains("[Completed exceptionally]"));
197		}
198
#	Line 257 | Line 240 | public class CompletableFutureTest exten
240		{
241		CompletableFuture<Integer> f = new CompletableFuture<>();
242		checkIncomplete(f);
243	<	assertTrue(f.cancel(true));
244	<	assertTrue(f.cancel(true));
243	>	assertTrue(f.cancel(mayInterruptIfRunning));
244	>	assertTrue(f.cancel(mayInterruptIfRunning));
245	>	assertTrue(f.cancel(!mayInterruptIfRunning));
246		checkCancelled(f);
247		}}
248
#	Line 530 | Line 514 | public class CompletableFutureTest exten
514		}
515		}
516
533	–
517		class CompletableFutureInc extends CheckedIntegerAction
518		implements Function<Integer, CompletableFuture<Integer>>
519		{
#	Line 569 | Line 552 | public class CompletableFutureTest exten
552		}
553		}
554
555	+	static final boolean defaultExecutorIsCommonPool
556	+	= ForkJoinPool.getCommonPoolParallelism() > 1;
557	+
558		/**
559		* Permits the testing of parallel code for the 3 different
560		* execution modes without copy/pasting all the test methods.
561		*/
562		enum ExecutionMode {
563	<	DEFAULT {
563	>	SYNC {
564		public void checkExecutionMode() {
565		assertFalse(ThreadExecutor.startedCurrentThread());
566		assertNull(ForkJoinTask.getPool());
#	Line 650 | Line 636 | public class CompletableFutureTest exten
636
637		ASYNC {
638		public void checkExecutionMode() {
639	<	assertSame(ForkJoinPool.commonPool(),
640	<	ForkJoinTask.getPool());
639	>	assertEquals(defaultExecutorIsCommonPool,
640	>	(ForkJoinPool.commonPool() == ForkJoinTask.getPool()));
641		}
642		public CompletableFuture<Void> runAsync(Runnable a) {
643		return CompletableFuture.runAsync(a);
#	Line 875 | Line 861 | public class CompletableFutureTest exten
861		if (!createIncomplete) f.completeExceptionally(ex);
862		final CompletableFuture<Integer> g = f.exceptionally
863		((Throwable t) -> {
864	<	ExecutionMode.DEFAULT.checkExecutionMode();
864	>	ExecutionMode.SYNC.checkExecutionMode();
865		threadAssertSame(t, ex);
866		a.getAndIncrement();
867		return v1;
#	Line 888 | Line 874 | public class CompletableFutureTest exten
874
875		public void testExceptionally_exceptionalCompletionActionFailed() {
876		for (boolean createIncomplete : new boolean[] { true, false })
891	–	for (Integer v1 : new Integer[] { 1, null })
877		{
878		final AtomicInteger a = new AtomicInteger(0);
879		final CFException ex1 = new CFException();
#	Line 897 | Line 882 | public class CompletableFutureTest exten
882		if (!createIncomplete) f.completeExceptionally(ex1);
883		final CompletableFuture<Integer> g = f.exceptionally
884		((Throwable t) -> {
885	<	ExecutionMode.DEFAULT.checkExecutionMode();
885	>	ExecutionMode.SYNC.checkExecutionMode();
886		threadAssertSame(t, ex1);
887		a.getAndIncrement();
888		throw ex2;
#	Line 942 | Line 927 | public class CompletableFutureTest exten
927		public void testWhenComplete_exceptionalCompletion() {
928		for (ExecutionMode m : ExecutionMode.values())
929		for (boolean createIncomplete : new boolean[] { true, false })
945	–	for (Integer v1 : new Integer[] { 1, null })
930		{
931		final AtomicInteger a = new AtomicInteger(0);
932		final CFException ex = new CFException();
#	Line 1027 | Line 1011 | public class CompletableFutureTest exten
1011		public void testWhenComplete_actionFailedSourceFailed() {
1012		for (boolean createIncomplete : new boolean[] { true, false })
1013		for (ExecutionMode m : ExecutionMode.values())
1030	–	for (Integer v1 : new Integer[] { 1, null })
1014		{
1015		final AtomicInteger a = new AtomicInteger(0);
1016		final CFException ex1 = new CFException();
#	Line 1264 | Line 1247 | public class CompletableFutureTest exten
1247		*/
1248		public void testThenRun_normalCompletion() {
1249		for (ExecutionMode m : ExecutionMode.values())
1267	–	for (boolean createIncomplete : new boolean[] { true, false })
1250		for (Integer v1 : new Integer[] { 1, null })
1251		{
1252		final CompletableFuture<Integer> f = new CompletableFuture<>();
1253	<	final Noop r = new Noop(m);
1254	<	if (!createIncomplete) assertTrue(f.complete(v1));
1273	<	final CompletableFuture<Void> g = m.thenRun(f, r);
1274	<	if (createIncomplete) {
1275	<	checkIncomplete(g);
1276	<	assertTrue(f.complete(v1));
1277	<	}
1253	>	final Noop[] rs = new Noop[6];
1254	>	for (int i = 0; i < rs.length; i++) rs[i] = new Noop(m);
1255
1256	<	checkCompletedNormally(g, null);
1256	>	final CompletableFuture<Void> h0 = m.thenRun(f, rs[0]);
1257	>	final CompletableFuture<Void> h1 = m.runAfterBoth(f, f, rs[1]);
1258	>	final CompletableFuture<Void> h2 = m.runAfterEither(f, f, rs[2]);
1259	>	checkIncomplete(h0);
1260	>	checkIncomplete(h1);
1261	>	checkIncomplete(h2);
1262	>	assertTrue(f.complete(v1));
1263	>	final CompletableFuture<Void> h3 = m.thenRun(f, rs[3]);
1264	>	final CompletableFuture<Void> h4 = m.runAfterBoth(f, f, rs[4]);
1265	>	final CompletableFuture<Void> h5 = m.runAfterEither(f, f, rs[5]);
1266	>
1267	>	checkCompletedNormally(h0, null);
1268	>	checkCompletedNormally(h1, null);
1269	>	checkCompletedNormally(h2, null);
1270	>	checkCompletedNormally(h3, null);
1271	>	checkCompletedNormally(h4, null);
1272	>	checkCompletedNormally(h5, null);
1273		checkCompletedNormally(f, v1);
1274	<	r.assertInvoked();
1274	>	for (Noop r : rs) r.assertInvoked();
1275		}}
1276
1277		/**
#	Line 1287 | Line 1280 | public class CompletableFutureTest exten
1280		*/
1281		public void testThenRun_exceptionalCompletion() {
1282		for (ExecutionMode m : ExecutionMode.values())
1290	–	for (boolean createIncomplete : new boolean[] { true, false })
1283		{
1284		final CFException ex = new CFException();
1285		final CompletableFuture<Integer> f = new CompletableFuture<>();
1286	<	final Noop r = new Noop(m);
1287	<	if (!createIncomplete) f.completeExceptionally(ex);
1296	<	final CompletableFuture<Void> g = m.thenRun(f, r);
1297	<	if (createIncomplete) {
1298	<	checkIncomplete(g);
1299	<	f.completeExceptionally(ex);
1300	<	}
1286	>	final Noop[] rs = new Noop[6];
1287	>	for (int i = 0; i < rs.length; i++) rs[i] = new Noop(m);
1288
1289	<	checkCompletedWithWrappedException(g, ex);
1289	>	final CompletableFuture<Void> h0 = m.thenRun(f, rs[0]);
1290	>	final CompletableFuture<Void> h1 = m.runAfterBoth(f, f, rs[1]);
1291	>	final CompletableFuture<Void> h2 = m.runAfterEither(f, f, rs[2]);
1292	>	checkIncomplete(h0);
1293	>	checkIncomplete(h1);
1294	>	checkIncomplete(h2);
1295	>	assertTrue(f.completeExceptionally(ex));
1296	>	final CompletableFuture<Void> h3 = m.thenRun(f, rs[3]);
1297	>	final CompletableFuture<Void> h4 = m.runAfterBoth(f, f, rs[4]);
1298	>	final CompletableFuture<Void> h5 = m.runAfterEither(f, f, rs[5]);
1299	>
1300	>	checkCompletedWithWrappedException(h0, ex);
1301	>	checkCompletedWithWrappedException(h1, ex);
1302	>	checkCompletedWithWrappedException(h2, ex);
1303	>	checkCompletedWithWrappedException(h3, ex);
1304	>	checkCompletedWithWrappedException(h4, ex);
1305	>	checkCompletedWithWrappedException(h5, ex);
1306		checkCompletedExceptionally(f, ex);
1307	<	r.assertNotInvoked();
1307	>	for (Noop r : rs) r.assertNotInvoked();
1308		}}
1309
1310		/**
#	Line 1309 | Line 1312 | public class CompletableFutureTest exten
1312		*/
1313		public void testThenRun_sourceCancelled() {
1314		for (ExecutionMode m : ExecutionMode.values())
1312	–	for (boolean createIncomplete : new boolean[] { true, false })
1315		for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1316		{
1317		final CompletableFuture<Integer> f = new CompletableFuture<>();
1318	<	final Noop r = new Noop(m);
1319	<	if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
1318	<	final CompletableFuture<Void> g = m.thenRun(f, r);
1319	<	if (createIncomplete) {
1320	<	checkIncomplete(g);
1321	<	assertTrue(f.cancel(mayInterruptIfRunning));
1322	<	}
1318	>	final Noop[] rs = new Noop[6];
1319	>	for (int i = 0; i < rs.length; i++) rs[i] = new Noop(m);
1320
1321	<	checkCompletedWithWrappedCancellationException(g);
1321	>	final CompletableFuture<Void> h0 = m.thenRun(f, rs[0]);
1322	>	final CompletableFuture<Void> h1 = m.runAfterBoth(f, f, rs[1]);
1323	>	final CompletableFuture<Void> h2 = m.runAfterEither(f, f, rs[2]);
1324	>	checkIncomplete(h0);
1325	>	checkIncomplete(h1);
1326	>	checkIncomplete(h2);
1327	>	assertTrue(f.cancel(mayInterruptIfRunning));
1328	>	final CompletableFuture<Void> h3 = m.thenRun(f, rs[3]);
1329	>	final CompletableFuture<Void> h4 = m.runAfterBoth(f, f, rs[4]);
1330	>	final CompletableFuture<Void> h5 = m.runAfterEither(f, f, rs[5]);
1331	>
1332	>	checkCompletedWithWrappedCancellationException(h0);
1333	>	checkCompletedWithWrappedCancellationException(h1);
1334	>	checkCompletedWithWrappedCancellationException(h2);
1335	>	checkCompletedWithWrappedCancellationException(h3);
1336	>	checkCompletedWithWrappedCancellationException(h4);
1337	>	checkCompletedWithWrappedCancellationException(h5);
1338		checkCancelled(f);
1339	<	r.assertNotInvoked();
1339	>	for (Noop r : rs) r.assertNotInvoked();
1340		}}
1341
1342		/**
#	Line 1331 | Line 1344 | public class CompletableFutureTest exten
1344		*/
1345		public void testThenRun_actionFailed() {
1346		for (ExecutionMode m : ExecutionMode.values())
1334	–	for (boolean createIncomplete : new boolean[] { true, false })
1347		for (Integer v1 : new Integer[] { 1, null })
1348		{
1349		final CompletableFuture<Integer> f = new CompletableFuture<>();
1350	<	final FailingRunnable r = new FailingRunnable(m);
1351	<	if (!createIncomplete) assertTrue(f.complete(v1));
1340	<	final CompletableFuture<Void> g = m.thenRun(f, r);
1341	<	if (createIncomplete) {
1342	<	checkIncomplete(g);
1343	<	assertTrue(f.complete(v1));
1344	<	}
1350	>	final FailingRunnable[] rs = new FailingRunnable[6];
1351	>	for (int i = 0; i < rs.length; i++) rs[i] = new FailingRunnable(m);
1352
1353	<	checkCompletedWithWrappedCFException(g);
1353	>	final CompletableFuture<Void> h0 = m.thenRun(f, rs[0]);
1354	>	final CompletableFuture<Void> h1 = m.runAfterBoth(f, f, rs[1]);
1355	>	final CompletableFuture<Void> h2 = m.runAfterEither(f, f, rs[2]);
1356	>	assertTrue(f.complete(v1));
1357	>	final CompletableFuture<Void> h3 = m.thenRun(f, rs[3]);
1358	>	final CompletableFuture<Void> h4 = m.runAfterBoth(f, f, rs[4]);
1359	>	final CompletableFuture<Void> h5 = m.runAfterEither(f, f, rs[5]);
1360	>
1361	>	checkCompletedWithWrappedCFException(h0);
1362	>	checkCompletedWithWrappedCFException(h1);
1363	>	checkCompletedWithWrappedCFException(h2);
1364	>	checkCompletedWithWrappedCFException(h3);
1365	>	checkCompletedWithWrappedCFException(h4);
1366	>	checkCompletedWithWrappedCFException(h5);
1367		checkCompletedNormally(f, v1);
1368		}}
1369
#	Line 1352 | Line 1372 | public class CompletableFutureTest exten
1372		*/
1373		public void testThenApply_normalCompletion() {
1374		for (ExecutionMode m : ExecutionMode.values())
1355	–	for (boolean createIncomplete : new boolean[] { true, false })
1375		for (Integer v1 : new Integer[] { 1, null })
1376		{
1377		final CompletableFuture<Integer> f = new CompletableFuture<>();
1378	<	final IncFunction r = new IncFunction(m);
1379	<	if (!createIncomplete) assertTrue(f.complete(v1));
1361	<	final CompletableFuture<Integer> g = m.thenApply(f, r);
1362	<	if (createIncomplete) {
1363	<	checkIncomplete(g);
1364	<	assertTrue(f.complete(v1));
1365	<	}
1378	>	final IncFunction[] rs = new IncFunction[4];
1379	>	for (int i = 0; i < rs.length; i++) rs[i] = new IncFunction(m);
1380
1381	<	checkCompletedNormally(g, inc(v1));
1381	>	final CompletableFuture<Integer> h0 = m.thenApply(f, rs[0]);
1382	>	final CompletableFuture<Integer> h1 = m.applyToEither(f, f, rs[1]);
1383	>	checkIncomplete(h0);
1384	>	checkIncomplete(h1);
1385	>	assertTrue(f.complete(v1));
1386	>	final CompletableFuture<Integer> h2 = m.thenApply(f, rs[2]);
1387	>	final CompletableFuture<Integer> h3 = m.applyToEither(f, f, rs[3]);
1388	>
1389	>	checkCompletedNormally(h0, inc(v1));
1390	>	checkCompletedNormally(h1, inc(v1));
1391	>	checkCompletedNormally(h2, inc(v1));
1392	>	checkCompletedNormally(h3, inc(v1));
1393		checkCompletedNormally(f, v1);
1394	<	r.assertValue(inc(v1));
1394	>	for (IncFunction r : rs) r.assertValue(inc(v1));
1395		}}
1396
1397		/**
#	Line 1375 | Line 1400 | public class CompletableFutureTest exten
1400		*/
1401		public void testThenApply_exceptionalCompletion() {
1402		for (ExecutionMode m : ExecutionMode.values())
1378	–	for (boolean createIncomplete : new boolean[] { true, false })
1403		{
1404		final CFException ex = new CFException();
1405		final CompletableFuture<Integer> f = new CompletableFuture<>();
1406	<	final IncFunction r = new IncFunction(m);
1407	<	if (!createIncomplete) f.completeExceptionally(ex);
1384	<	final CompletableFuture<Integer> g = m.thenApply(f, r);
1385	<	if (createIncomplete) {
1386	<	checkIncomplete(g);
1387	<	f.completeExceptionally(ex);
1388	<	}
1406	>	final IncFunction[] rs = new IncFunction[4];
1407	>	for (int i = 0; i < rs.length; i++) rs[i] = new IncFunction(m);
1408
1409	<	checkCompletedWithWrappedException(g, ex);
1409	>	final CompletableFuture<Integer> h0 = m.thenApply(f, rs[0]);
1410	>	final CompletableFuture<Integer> h1 = m.applyToEither(f, f, rs[1]);
1411	>	assertTrue(f.completeExceptionally(ex));
1412	>	final CompletableFuture<Integer> h2 = m.thenApply(f, rs[2]);
1413	>	final CompletableFuture<Integer> h3 = m.applyToEither(f, f, rs[3]);
1414	>
1415	>	checkCompletedWithWrappedException(h0, ex);
1416	>	checkCompletedWithWrappedException(h1, ex);
1417	>	checkCompletedWithWrappedException(h2, ex);
1418	>	checkCompletedWithWrappedException(h3, ex);
1419		checkCompletedExceptionally(f, ex);
1420	<	r.assertNotInvoked();
1420	>	for (IncFunction r : rs) r.assertNotInvoked();
1421		}}
1422
1423		/**
#	Line 1397 | Line 1425 | public class CompletableFutureTest exten
1425		*/
1426		public void testThenApply_sourceCancelled() {
1427		for (ExecutionMode m : ExecutionMode.values())
1400	–	for (boolean createIncomplete : new boolean[] { true, false })
1428		for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1429		{
1430		final CompletableFuture<Integer> f = new CompletableFuture<>();
1431	<	final IncFunction r = new IncFunction(m);
1432	<	if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
1406	<	final CompletableFuture<Integer> g = m.thenApply(f, r);
1407	<	if (createIncomplete) {
1408	<	checkIncomplete(g);
1409	<	assertTrue(f.cancel(mayInterruptIfRunning));
1410	<	}
1431	>	final IncFunction[] rs = new IncFunction[4];
1432	>	for (int i = 0; i < rs.length; i++) rs[i] = new IncFunction(m);
1433
1434	<	checkCompletedWithWrappedCancellationException(g);
1434	>	final CompletableFuture<Integer> h0 = m.thenApply(f, rs[0]);
1435	>	final CompletableFuture<Integer> h1 = m.applyToEither(f, f, rs[1]);
1436	>	assertTrue(f.cancel(mayInterruptIfRunning));
1437	>	final CompletableFuture<Integer> h2 = m.thenApply(f, rs[2]);
1438	>	final CompletableFuture<Integer> h3 = m.applyToEither(f, f, rs[3]);
1439	>
1440	>	checkCompletedWithWrappedCancellationException(h0);
1441	>	checkCompletedWithWrappedCancellationException(h1);
1442	>	checkCompletedWithWrappedCancellationException(h2);
1443	>	checkCompletedWithWrappedCancellationException(h3);
1444		checkCancelled(f);
1445	<	r.assertNotInvoked();
1445	>	for (IncFunction r : rs) r.assertNotInvoked();
1446		}}
1447
1448		/**
#	Line 1419 | Line 1450 | public class CompletableFutureTest exten
1450		*/
1451		public void testThenApply_actionFailed() {
1452		for (ExecutionMode m : ExecutionMode.values())
1422	–	for (boolean createIncomplete : new boolean[] { true, false })
1453		for (Integer v1 : new Integer[] { 1, null })
1454		{
1455		final CompletableFuture<Integer> f = new CompletableFuture<>();
1456	<	final FailingFunction r = new FailingFunction(m);
1457	<	if (!createIncomplete) assertTrue(f.complete(v1));
1428	<	final CompletableFuture<Integer> g = m.thenApply(f, r);
1429	<	if (createIncomplete) {
1430	<	checkIncomplete(g);
1431	<	assertTrue(f.complete(v1));
1432	<	}
1456	>	final FailingFunction[] rs = new FailingFunction[4];
1457	>	for (int i = 0; i < rs.length; i++) rs[i] = new FailingFunction(m);
1458
1459	<	checkCompletedWithWrappedCFException(g);
1459	>	final CompletableFuture<Integer> h0 = m.thenApply(f, rs[0]);
1460	>	final CompletableFuture<Integer> h1 = m.applyToEither(f, f, rs[1]);
1461	>	assertTrue(f.complete(v1));
1462	>	final CompletableFuture<Integer> h2 = m.thenApply(f, rs[2]);
1463	>	final CompletableFuture<Integer> h3 = m.applyToEither(f, f, rs[3]);
1464	>
1465	>	checkCompletedWithWrappedCFException(h0);
1466	>	checkCompletedWithWrappedCFException(h1);
1467	>	checkCompletedWithWrappedCFException(h2);
1468	>	checkCompletedWithWrappedCFException(h3);
1469		checkCompletedNormally(f, v1);
1470		}}
1471
#	Line 1440 | Line 1474 | public class CompletableFutureTest exten
1474		*/
1475		public void testThenAccept_normalCompletion() {
1476		for (ExecutionMode m : ExecutionMode.values())
1443	–	for (boolean createIncomplete : new boolean[] { true, false })
1477		for (Integer v1 : new Integer[] { 1, null })
1478		{
1479		final CompletableFuture<Integer> f = new CompletableFuture<>();
1480	<	final NoopConsumer r = new NoopConsumer(m);
1481	<	if (!createIncomplete) assertTrue(f.complete(v1));
1449	<	final CompletableFuture<Void> g = m.thenAccept(f, r);
1450	<	if (createIncomplete) {
1451	<	checkIncomplete(g);
1452	<	assertTrue(f.complete(v1));
1453	<	}
1480	>	final NoopConsumer[] rs = new NoopConsumer[4];
1481	>	for (int i = 0; i < rs.length; i++) rs[i] = new NoopConsumer(m);
1482
1483	<	checkCompletedNormally(g, null);
1484	<	r.assertValue(v1);
1483	>	final CompletableFuture<Void> h0 = m.thenAccept(f, rs[0]);
1484	>	final CompletableFuture<Void> h1 = m.acceptEither(f, f, rs[1]);
1485	>	checkIncomplete(h0);
1486	>	checkIncomplete(h1);
1487	>	assertTrue(f.complete(v1));
1488	>	final CompletableFuture<Void> h2 = m.thenAccept(f, rs[2]);
1489	>	final CompletableFuture<Void> h3 = m.acceptEither(f, f, rs[3]);
1490	>
1491	>	checkCompletedNormally(h0, null);
1492	>	checkCompletedNormally(h1, null);
1493	>	checkCompletedNormally(h2, null);
1494	>	checkCompletedNormally(h3, null);
1495		checkCompletedNormally(f, v1);
1496	+	for (NoopConsumer r : rs) r.assertValue(v1);
1497		}}
1498
1499		/**
#	Line 1463 | Line 1502 | public class CompletableFutureTest exten
1502		*/
1503		public void testThenAccept_exceptionalCompletion() {
1504		for (ExecutionMode m : ExecutionMode.values())
1466	–	for (boolean createIncomplete : new boolean[] { true, false })
1505		{
1506		final CFException ex = new CFException();
1507		final CompletableFuture<Integer> f = new CompletableFuture<>();
1508	<	final NoopConsumer r = new NoopConsumer(m);
1509	<	if (!createIncomplete) f.completeExceptionally(ex);
1472	<	final CompletableFuture<Void> g = m.thenAccept(f, r);
1473	<	if (createIncomplete) {
1474	<	checkIncomplete(g);
1475	<	f.completeExceptionally(ex);
1476	<	}
1508	>	final NoopConsumer[] rs = new NoopConsumer[4];
1509	>	for (int i = 0; i < rs.length; i++) rs[i] = new NoopConsumer(m);
1510
1511	<	checkCompletedWithWrappedException(g, ex);
1511	>	final CompletableFuture<Void> h0 = m.thenAccept(f, rs[0]);
1512	>	final CompletableFuture<Void> h1 = m.acceptEither(f, f, rs[1]);
1513	>	assertTrue(f.completeExceptionally(ex));
1514	>	final CompletableFuture<Void> h2 = m.thenAccept(f, rs[2]);
1515	>	final CompletableFuture<Void> h3 = m.acceptEither(f, f, rs[3]);
1516	>
1517	>	checkCompletedWithWrappedException(h0, ex);
1518	>	checkCompletedWithWrappedException(h1, ex);
1519	>	checkCompletedWithWrappedException(h2, ex);
1520	>	checkCompletedWithWrappedException(h3, ex);
1521		checkCompletedExceptionally(f, ex);
1522	<	r.assertNotInvoked();
1522	>	for (NoopConsumer r : rs) r.assertNotInvoked();
1523		}}
1524
1525		/**
#	Line 1485 | Line 1527 | public class CompletableFutureTest exten
1527		*/
1528		public void testThenAccept_sourceCancelled() {
1529		for (ExecutionMode m : ExecutionMode.values())
1488	–	for (boolean createIncomplete : new boolean[] { true, false })
1530		for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1531		{
1532		final CompletableFuture<Integer> f = new CompletableFuture<>();
1533	<	final NoopConsumer r = new NoopConsumer(m);
1534	<	if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
1494	<	final CompletableFuture<Void> g = m.thenAccept(f, r);
1495	<	if (createIncomplete) {
1496	<	checkIncomplete(g);
1497	<	assertTrue(f.cancel(mayInterruptIfRunning));
1498	<	}
1533	>	final NoopConsumer[] rs = new NoopConsumer[4];
1534	>	for (int i = 0; i < rs.length; i++) rs[i] = new NoopConsumer(m);
1535
1536	<	checkCompletedWithWrappedCancellationException(g);
1536	>	final CompletableFuture<Void> h0 = m.thenAccept(f, rs[0]);
1537	>	final CompletableFuture<Void> h1 = m.acceptEither(f, f, rs[1]);
1538	>	assertTrue(f.cancel(mayInterruptIfRunning));
1539	>	final CompletableFuture<Void> h2 = m.thenAccept(f, rs[2]);
1540	>	final CompletableFuture<Void> h3 = m.acceptEither(f, f, rs[3]);
1541	>
1542	>	checkCompletedWithWrappedCancellationException(h0);
1543	>	checkCompletedWithWrappedCancellationException(h1);
1544	>	checkCompletedWithWrappedCancellationException(h2);
1545	>	checkCompletedWithWrappedCancellationException(h3);
1546		checkCancelled(f);
1547	<	r.assertNotInvoked();
1547	>	for (NoopConsumer r : rs) r.assertNotInvoked();
1548		}}
1549
1550		/**
#	Line 1507 | Line 1552 | public class CompletableFutureTest exten
1552		*/
1553		public void testThenAccept_actionFailed() {
1554		for (ExecutionMode m : ExecutionMode.values())
1510	–	for (boolean createIncomplete : new boolean[] { true, false })
1555		for (Integer v1 : new Integer[] { 1, null })
1556		{
1557		final CompletableFuture<Integer> f = new CompletableFuture<>();
1558	<	final FailingConsumer r = new FailingConsumer(m);
1559	<	if (!createIncomplete) f.complete(v1);
1516	<	final CompletableFuture<Void> g = m.thenAccept(f, r);
1517	<	if (createIncomplete) {
1518	<	checkIncomplete(g);
1519	<	f.complete(v1);
1520	<	}
1558	>	final FailingConsumer[] rs = new FailingConsumer[4];
1559	>	for (int i = 0; i < rs.length; i++) rs[i] = new FailingConsumer(m);
1560
1561	<	checkCompletedWithWrappedCFException(g);
1561	>	final CompletableFuture<Void> h0 = m.thenAccept(f, rs[0]);
1562	>	final CompletableFuture<Void> h1 = m.acceptEither(f, f, rs[1]);
1563	>	assertTrue(f.complete(v1));
1564	>	final CompletableFuture<Void> h2 = m.thenAccept(f, rs[2]);
1565	>	final CompletableFuture<Void> h3 = m.acceptEither(f, f, rs[3]);
1566	>
1567	>	checkCompletedWithWrappedCFException(h0);
1568	>	checkCompletedWithWrappedCFException(h1);
1569	>	checkCompletedWithWrappedCFException(h2);
1570	>	checkCompletedWithWrappedCFException(h3);
1571		checkCompletedNormally(f, v1);
1572		}}
1573
#	Line 1535 | Line 1583 | public class CompletableFutureTest exten
1583		{
1584		final CompletableFuture<Integer> f = new CompletableFuture<>();
1585		final CompletableFuture<Integer> g = new CompletableFuture<>();
1586	<	final SubtractFunction r1 = new SubtractFunction(m);
1587	<	final SubtractFunction r2 = new SubtractFunction(m);
1540	<	final SubtractFunction r3 = new SubtractFunction(m);
1586	>	final SubtractFunction[] rs = new SubtractFunction[6];
1587	>	for (int i = 0; i < rs.length; i++) rs[i] = new SubtractFunction(m);
1588
1589		final CompletableFuture<Integer> fst =  fFirst ? f : g;
1590		final CompletableFuture<Integer> snd = !fFirst ? f : g;
1591		final Integer w1 =  fFirst ? v1 : v2;
1592		final Integer w2 = !fFirst ? v1 : v2;
1593
1594	<	final CompletableFuture<Integer> h1 = m.thenCombine(f, g, r1);
1594	>	final CompletableFuture<Integer> h0 = m.thenCombine(f, g, rs[0]);
1595	>	final CompletableFuture<Integer> h1 = m.thenCombine(fst, fst, rs[1]);
1596		assertTrue(fst.complete(w1));
1597	<	final CompletableFuture<Integer> h2 = m.thenCombine(f, g, r2);
1598	<	checkIncomplete(h1);
1599	<	checkIncomplete(h2);
1600	<	r1.assertNotInvoked();
1601	<	r2.assertNotInvoked();
1597	>	final CompletableFuture<Integer> h2 = m.thenCombine(f, g, rs[2]);
1598	>	final CompletableFuture<Integer> h3 = m.thenCombine(fst, fst, rs[3]);
1599	>	checkIncomplete(h0); rs[0].assertNotInvoked();
1600	>	checkIncomplete(h2); rs[2].assertNotInvoked();
1601	>	checkCompletedNormally(h1, subtract(w1, w1));
1602	>	checkCompletedNormally(h3, subtract(w1, w1));
1603	>	rs[1].assertValue(subtract(w1, w1));
1604	>	rs[3].assertValue(subtract(w1, w1));
1605		assertTrue(snd.complete(w2));
1606	<	final CompletableFuture<Integer> h3 = m.thenCombine(f, g, r3);
1606	>	final CompletableFuture<Integer> h4 = m.thenCombine(f, g, rs[4]);
1607
1608	<	checkCompletedNormally(h1, subtract(v1, v2));
1608	>	checkCompletedNormally(h0, subtract(v1, v2));
1609		checkCompletedNormally(h2, subtract(v1, v2));
1610	<	checkCompletedNormally(h3, subtract(v1, v2));
1611	<	r1.assertValue(subtract(v1, v2));
1612	<	r2.assertValue(subtract(v1, v2));
1613	<	r3.assertValue(subtract(v1, v2));
1610	>	checkCompletedNormally(h4, subtract(v1, v2));
1611	>	rs[0].assertValue(subtract(v1, v2));
1612	>	rs[2].assertValue(subtract(v1, v2));
1613	>	rs[4].assertValue(subtract(v1, v2));
1614	>
1615		checkCompletedNormally(f, v1);
1616		checkCompletedNormally(g, v2);
1617		}}
#	Line 2906 | Line 2958 | public class CompletableFutureTest exten
2958		checkCancelled(f);
2959		}}
2960
2961	+	/**
2962	+	* thenCompose result completes exceptionally if the result of the action does
2963	+	*/
2964	+	public void testThenCompose_actionReturnsFailingFuture() {
2965	+	for (ExecutionMode m : ExecutionMode.values())
2966	+	for (int order = 0; order < 6; order++)
2967	+	for (Integer v1 : new Integer[] { 1, null })
2968	+	{
2969	+	final CFException ex = new CFException();
2970	+	final CompletableFuture<Integer> f = new CompletableFuture<>();
2971	+	final CompletableFuture<Integer> g = new CompletableFuture<>();
2972	+	final CompletableFuture<Integer> h;
2973	+	// Test all permutations of orders
2974	+	switch (order) {
2975	+	case 0:
2976	+	assertTrue(f.complete(v1));
2977	+	assertTrue(g.completeExceptionally(ex));
2978	+	h = m.thenCompose(f, (x -> g));
2979	+	break;
2980	+	case 1:
2981	+	assertTrue(f.complete(v1));
2982	+	h = m.thenCompose(f, (x -> g));
2983	+	assertTrue(g.completeExceptionally(ex));
2984	+	break;
2985	+	case 2:
2986	+	assertTrue(g.completeExceptionally(ex));
2987	+	assertTrue(f.complete(v1));
2988	+	h = m.thenCompose(f, (x -> g));
2989	+	break;
2990	+	case 3:
2991	+	assertTrue(g.completeExceptionally(ex));
2992	+	h = m.thenCompose(f, (x -> g));
2993	+	assertTrue(f.complete(v1));
2994	+	break;
2995	+	case 4:
2996	+	h = m.thenCompose(f, (x -> g));
2997	+	assertTrue(f.complete(v1));
2998	+	assertTrue(g.completeExceptionally(ex));
2999	+	break;
3000	+	case 5:
3001	+	h = m.thenCompose(f, (x -> g));
3002	+	assertTrue(f.complete(v1));
3003	+	assertTrue(g.completeExceptionally(ex));
3004	+	break;
3005	+	default: throw new AssertionError();
3006	+	}
3007	+
3008	+	checkCompletedExceptionally(g, ex);
3009	+	checkCompletedWithWrappedException(h, ex);
3010	+	checkCompletedNormally(f, v1);
3011	+	}}
3012	+
3013		// other static methods
3014
3015		/**
#	Line 2922 | Line 3026 | public class CompletableFutureTest exten
3026		* when all components complete normally
3027		*/
3028		public void testAllOf_normal() throws Exception {
3029	<	for (int k = 1; k < 20; ++k) {
3029	>	for (int k = 1; k < 10; k++) {
3030		CompletableFuture<Integer>[] fs
3031		= (CompletableFuture<Integer>[]) new CompletableFuture[k];
3032	<	for (int i = 0; i < k; ++i)
3032	>	for (int i = 0; i < k; i++)
3033		fs[i] = new CompletableFuture<>();
3034		CompletableFuture<Void> f = CompletableFuture.allOf(fs);
3035	<	for (int i = 0; i < k; ++i) {
3035	>	for (int i = 0; i < k; i++) {
3036		checkIncomplete(f);
3037		checkIncomplete(CompletableFuture.allOf(fs));
3038		fs[i].complete(one);
#	Line 2939 | Line 3043 | public class CompletableFutureTest exten
3043		}
3044
3045		public void testAllOf_backwards() throws Exception {
3046	<	for (int k = 1; k < 20; ++k) {
3046	>	for (int k = 1; k < 10; k++) {
3047		CompletableFuture<Integer>[] fs
3048		= (CompletableFuture<Integer>[]) new CompletableFuture[k];
3049	<	for (int i = 0; i < k; ++i)
3049	>	for (int i = 0; i < k; i++)
3050		fs[i] = new CompletableFuture<>();
3051		CompletableFuture<Void> f = CompletableFuture.allOf(fs);
3052		for (int i = k - 1; i >= 0; i--) {
#	Line 2955 | Line 3059 | public class CompletableFutureTest exten
3059		}
3060		}
3061
3062	+	public void testAllOf_exceptional() throws Exception {
3063	+	for (int k = 1; k < 10; k++) {
3064	+	CompletableFuture<Integer>[] fs
3065	+	= (CompletableFuture<Integer>[]) new CompletableFuture[k];
3066	+	CFException ex = new CFException();
3067	+	for (int i = 0; i < k; i++)
3068	+	fs[i] = new CompletableFuture<>();
3069	+	CompletableFuture<Void> f = CompletableFuture.allOf(fs);
3070	+	for (int i = 0; i < k; i++) {
3071	+	checkIncomplete(f);
3072	+	checkIncomplete(CompletableFuture.allOf(fs));
3073	+	if (i != k / 2) {
3074	+	fs[i].complete(i);
3075	+	checkCompletedNormally(fs[i], i);
3076	+	} else {
3077	+	fs[i].completeExceptionally(ex);
3078	+	checkCompletedExceptionally(fs[i], ex);
3079	+	}
3080	+	}
3081	+	checkCompletedWithWrappedException(f, ex);
3082	+	checkCompletedWithWrappedException(CompletableFuture.allOf(fs), ex);
3083	+	}
3084	+	}
3085	+
3086		/**
3087		* anyOf(no component futures) returns an incomplete future
3088		*/
3089		public void testAnyOf_empty() throws Exception {
3090	+	for (Integer v1 : new Integer[] { 1, null })
3091	+	{
3092		CompletableFuture<Object> f = CompletableFuture.anyOf();
3093		checkIncomplete(f);
3094	<	}
3094	>
3095	>	f.complete(v1);
3096	>	checkCompletedNormally(f, v1);
3097	>	}}
3098
3099		/**
3100		* anyOf returns a future completed normally with a value when
3101		* a component future does
3102		*/
3103		public void testAnyOf_normal() throws Exception {
3104	<	for (int k = 0; k < 10; ++k) {
3104	>	for (int k = 0; k < 10; k++) {
3105		CompletableFuture[] fs = new CompletableFuture[k];
3106	<	for (int i = 0; i < k; ++i)
3106	>	for (int i = 0; i < k; i++)
3107		fs[i] = new CompletableFuture<>();
3108		CompletableFuture<Object> f = CompletableFuture.anyOf(fs);
3109		checkIncomplete(f);
3110	<	for (int i = 0; i < k; ++i) {
3111	<	fs[i].complete(one);
3112	<	checkCompletedNormally(f, one);
3113	<	checkCompletedNormally(CompletableFuture.anyOf(fs), one);
3110	>	for (int i = 0; i < k; i++) {
3111	>	fs[i].complete(i);
3112	>	checkCompletedNormally(f, 0);
3113	>	int x = (int) CompletableFuture.anyOf(fs).join();
3114	>	assertTrue(0 <= x && x <= i);
3115	>	}
3116	>	}
3117	>	}
3118	>	public void testAnyOf_normal_backwards() throws Exception {
3119	>	for (int k = 0; k < 10; k++) {
3120	>	CompletableFuture[] fs = new CompletableFuture[k];
3121	>	for (int i = 0; i < k; i++)
3122	>	fs[i] = new CompletableFuture<>();
3123	>	CompletableFuture<Object> f = CompletableFuture.anyOf(fs);
3124	>	checkIncomplete(f);
3125	>	for (int i = k - 1; i >= 0; i--) {
3126	>	fs[i].complete(i);
3127	>	checkCompletedNormally(f, k - 1);
3128	>	int x = (int) CompletableFuture.anyOf(fs).join();
3129	>	assertTrue(i <= x && x <= k - 1);
3130		}
3131		}
3132		}
#	Line 2986 | Line 3135 | public class CompletableFutureTest exten
3135		* anyOf result completes exceptionally when any component does.
3136		*/
3137		public void testAnyOf_exceptional() throws Exception {
3138	<	for (int k = 0; k < 10; ++k) {
3138	>	for (int k = 0; k < 10; k++) {
3139		CompletableFuture[] fs = new CompletableFuture[k];
3140	<	for (int i = 0; i < k; ++i)
3140	>	CFException[] exs = new CFException[k];
3141	>	for (int i = 0; i < k; i++) {
3142		fs[i] = new CompletableFuture<>();
3143	+	exs[i] = new CFException();
3144	+	}
3145		CompletableFuture<Object> f = CompletableFuture.anyOf(fs);
3146		checkIncomplete(f);
3147	<	for (int i = 0; i < k; ++i) {
3148	<	fs[i].completeExceptionally(new CFException());
3149	<	checkCompletedWithWrappedCFException(f);
3147	>	for (int i = 0; i < k; i++) {
3148	>	fs[i].completeExceptionally(exs[i]);
3149	>	checkCompletedWithWrappedException(f, exs[0]);
3150	>	checkCompletedWithWrappedCFException(CompletableFuture.anyOf(fs));
3151	>	}
3152	>	}
3153	>	}
3154	>
3155	>	public void testAnyOf_exceptional_backwards() throws Exception {
3156	>	for (int k = 0; k < 10; k++) {
3157	>	CompletableFuture[] fs = new CompletableFuture[k];
3158	>	CFException[] exs = new CFException[k];
3159	>	for (int i = 0; i < k; i++) {
3160	>	fs[i] = new CompletableFuture<>();
3161	>	exs[i] = new CFException();
3162	>	}
3163	>	CompletableFuture<Object> f = CompletableFuture.anyOf(fs);
3164	>	checkIncomplete(f);
3165	>	for (int i = k - 1; i >= 0; i--) {
3166	>	fs[i].completeExceptionally(exs[i]);
3167	>	checkCompletedWithWrappedException(f, exs[k - 1]);
3168		checkCompletedWithWrappedCFException(CompletableFuture.anyOf(fs));
3169		}
3170		}
#	Line 3007 | Line 3177 | public class CompletableFutureTest exten
3177		CompletableFuture<Integer> f = new CompletableFuture<>();
3178		CompletableFuture<Integer> g = new CompletableFuture<>();
3179		CompletableFuture<Integer> nullFuture = (CompletableFuture<Integer>)null;
3010	–	CompletableFuture<?> h;
3180		ThreadExecutor exec = new ThreadExecutor();
3181
3182		Runnable[] throwingActions = {
3183		() -> CompletableFuture.supplyAsync(null),
3184		() -> CompletableFuture.supplyAsync(null, exec),
3185	<	() -> CompletableFuture.supplyAsync(new IntegerSupplier(ExecutionMode.DEFAULT, 42), null),
3185	>	() -> CompletableFuture.supplyAsync(new IntegerSupplier(ExecutionMode.SYNC, 42), null),
3186
3187		() -> CompletableFuture.runAsync(null),
3188		() -> CompletableFuture.runAsync(null, exec),
#	Line 3104 | Line 3273 | public class CompletableFutureTest exten
3273		() -> CompletableFuture.anyOf(null, f),
3274
3275		() -> f.obtrudeException(null),
3276	+
3277	+	() -> CompletableFuture.delayedExecutor(1L, SECONDS, null),
3278	+	() -> CompletableFuture.delayedExecutor(1L, null, new ThreadExecutor()),
3279	+	() -> CompletableFuture.delayedExecutor(1L, null),
3280	+
3281	+	() -> f.orTimeout(1L, null),
3282	+	() -> f.completeOnTimeout(42, 1L, null),
3283	+
3284	+	() -> CompletableFuture.failedFuture(null),
3285	+	() -> CompletableFuture.failedStage(null),
3286		};
3287
3288		assertThrows(NullPointerException.class, throwingActions);
#	Line 3118 | Line 3297 | public class CompletableFutureTest exten
3297		assertSame(f, f.toCompletableFuture());
3298		}
3299
3300	<	//     public void testRunAfterEither_resultDeterminedAtTimeOfCreation() {
3301	<	//         for (ExecutionMode m : ExecutionMode.values())
3302	<	//         for (boolean mayInterruptIfRunning : new boolean[] { true, false })
3303	<	//         for (Integer v1 : new Integer[] { 1, null })
3304	<	//     {
3305	<	//         final CompletableFuture<Integer> f = new CompletableFuture<>();
3306	<	//         final CompletableFuture<Integer> g = new CompletableFuture<>();
3307	<	//         final Noop[] rs = new Noop[2];
3308	<	//         for (int i = 0; i < rs.length; i++) rs[i] = new Noop(m);
3309	<	//         f.complete(v1);
3310	<	//         final CompletableFuture<Void> h0 = m.runAfterEither(f, g, rs[0]);
3311	<	//         final CompletableFuture<Void> h1 = m.runAfterEither(g, f, rs[1]);
3312	<	//         assertTrue(g.cancel(mayInterruptIfRunning));
3313	<	//         checkCompletedNormally(h0, null);
3314	<	//         checkCompletedNormally(h1, null);
3315	<	//         for (Noop r : rs) r.assertInvoked();
3316	<	//     }}
3300	>	// jdk9
3301	>
3302	>	/**
3303	>	* newIncompleteFuture returns an incomplete CompletableFuture
3304	>	*/
3305	>	public void testNewIncompleteFuture() {
3306	>	for (Integer v1 : new Integer[] { 1, null })
3307	>	{
3308	>	CompletableFuture<Integer> f = new CompletableFuture<>();
3309	>	CompletableFuture<Integer> g = f.newIncompleteFuture();
3310	>	checkIncomplete(f);
3311	>	checkIncomplete(g);
3312	>	f.complete(v1);
3313	>	checkCompletedNormally(f, v1);
3314	>	checkIncomplete(g);
3315	>	g.complete(v1);
3316	>	checkCompletedNormally(g, v1);
3317	>	assertSame(g.getClass(), CompletableFuture.class);
3318	>	}}
3319	>
3320	>	/**
3321	>	* completedStage returns a completed CompletionStage
3322	>	*/
3323	>	public void testCompletedStage() {
3324	>	AtomicInteger x = new AtomicInteger(0);
3325	>	AtomicReference<Throwable> r = new AtomicReference<Throwable>();
3326	>	CompletionStage<Integer> f = CompletableFuture.completedStage(1);
3327	>	f.whenComplete((v, e) -> {if (e != null) r.set(e); else x.set(v);});
3328	>	assertEquals(x.get(), 1);
3329	>	assertNull(r.get());
3330	>	}
3331	>
3332	>	/**
3333	>	* defaultExecutor by default returns the commonPool if
3334	>	* it supports more than one thread.
3335	>	*/
3336	>	public void testDefaultExecutor() {
3337	>	CompletableFuture<Integer> f = new CompletableFuture<>();
3338	>	Executor e = f.defaultExecutor();
3339	>	Executor c = ForkJoinPool.commonPool();
3340	>	if (ForkJoinPool.getCommonPoolParallelism() > 1)
3341	>	assertSame(e, c);
3342	>	else
3343	>	assertNotSame(e, c);
3344	>	}
3345	>
3346	>	/**
3347	>	* failedFuture returns a CompletableFuture completed
3348	>	* exceptionally with the given Exception
3349	>	*/
3350	>	public void testFailedFuture() {
3351	>	CFException ex = new CFException();
3352	>	CompletableFuture<Integer> f = CompletableFuture.failedFuture(ex);
3353	>	checkCompletedExceptionally(f, ex);
3354	>	}
3355	>
3356	>	/**
3357	>	* failedFuture(null) throws NPE
3358	>	*/
3359	>	public void testFailedFuture_null() {
3360	>	try {
3361	>	CompletableFuture<Integer> f = CompletableFuture.failedFuture(null);
3362	>	shouldThrow();
3363	>	} catch (NullPointerException success) {}
3364	>	}
3365	>
3366	>	/**
3367	>	* copy returns a CompletableFuture that is completed normally,
3368	>	* with the same value, when source is.
3369	>	*/
3370	>	public void testCopy() {
3371	>	CompletableFuture<Integer> f = new CompletableFuture<>();
3372	>	CompletableFuture<Integer> g = f.copy();
3373	>	checkIncomplete(f);
3374	>	checkIncomplete(g);
3375	>	f.complete(1);
3376	>	checkCompletedNormally(f, 1);
3377	>	checkCompletedNormally(g, 1);
3378	>	}
3379	>
3380	>	/**
3381	>	* copy returns a CompletableFuture that is completed exceptionally
3382	>	* when source is.
3383	>	*/
3384	>	public void testCopy2() {
3385	>	CompletableFuture<Integer> f = new CompletableFuture<>();
3386	>	CompletableFuture<Integer> g = f.copy();
3387	>	checkIncomplete(f);
3388	>	checkIncomplete(g);
3389	>	CFException ex = new CFException();
3390	>	f.completeExceptionally(ex);
3391	>	checkCompletedExceptionally(f, ex);
3392	>	checkCompletedWithWrappedException(g, ex);
3393	>	}
3394	>
3395	>	/**
3396	>	* minimalCompletionStage returns a CompletableFuture that is
3397	>	* completed normally, with the same value, when source is.
3398	>	*/
3399	>	public void testMinimalCompletionStage() {
3400	>	CompletableFuture<Integer> f = new CompletableFuture<>();
3401	>	CompletionStage<Integer> g = f.minimalCompletionStage();
3402	>	AtomicInteger x = new AtomicInteger(0);
3403	>	AtomicReference<Throwable> r = new AtomicReference<Throwable>();
3404	>	checkIncomplete(f);
3405	>	g.whenComplete((v, e) -> {if (e != null) r.set(e); else x.set(v);});
3406	>	f.complete(1);
3407	>	checkCompletedNormally(f, 1);
3408	>	assertEquals(x.get(), 1);
3409	>	assertNull(r.get());
3410	>	}
3411	>
3412	>	/**
3413	>	* minimalCompletionStage returns a CompletableFuture that is
3414	>	* completed exceptionally when source is.
3415	>	*/
3416	>	public void testMinimalCompletionStage2() {
3417	>	CompletableFuture<Integer> f = new CompletableFuture<>();
3418	>	CompletionStage<Integer> g = f.minimalCompletionStage();
3419	>	AtomicInteger x = new AtomicInteger(0);
3420	>	AtomicReference<Throwable> r = new AtomicReference<Throwable>();
3421	>	g.whenComplete((v, e) -> {if (e != null) r.set(e); else x.set(v);});
3422	>	checkIncomplete(f);
3423	>	CFException ex = new CFException();
3424	>	f.completeExceptionally(ex);
3425	>	checkCompletedExceptionally(f, ex);
3426	>	assertEquals(x.get(), 0);
3427	>	assertEquals(r.get().getCause(), ex);
3428	>	}
3429	>
3430	>	/**
3431	>	* failedStage returns a CompletionStage completed
3432	>	* exceptionally with the given Exception
3433	>	*/
3434	>	public void testFailedStage() {
3435	>	CFException ex = new CFException();
3436	>	CompletionStage<Integer> f = CompletableFuture.failedStage(ex);
3437	>	AtomicInteger x = new AtomicInteger(0);
3438	>	AtomicReference<Throwable> r = new AtomicReference<Throwable>();
3439	>	f.whenComplete((v, e) -> {if (e != null) r.set(e); else x.set(v);});
3440	>	assertEquals(x.get(), 0);
3441	>	assertEquals(r.get(), ex);
3442	>	}
3443	>
3444	>	/**
3445	>	* completeAsync completes with value of given supplier
3446	>	*/
3447	>	public void testCompleteAsync() {
3448	>	for (Integer v1 : new Integer[] { 1, null })
3449	>	{
3450	>	CompletableFuture<Integer> f = new CompletableFuture<>();
3451	>	f.completeAsync(() -> v1);
3452	>	f.join();
3453	>	checkCompletedNormally(f, v1);
3454	>	}}
3455	>
3456	>	/**
3457	>	* completeAsync completes exceptionally if given supplier throws
3458	>	*/
3459	>	public void testCompleteAsync2() {
3460	>	CompletableFuture<Integer> f = new CompletableFuture<>();
3461	>	CFException ex = new CFException();
3462	>	f.completeAsync(() -> {if (true) throw ex; return 1;});
3463	>	try {
3464	>	f.join();
3465	>	shouldThrow();
3466	>	} catch (CompletionException success) {}
3467	>	checkCompletedWithWrappedException(f, ex);
3468	>	}
3469	>
3470	>	/**
3471	>	* completeAsync with given executor completes with value of given supplier
3472	>	*/
3473	>	public void testCompleteAsync3() {
3474	>	for (Integer v1 : new Integer[] { 1, null })
3475	>	{
3476	>	CompletableFuture<Integer> f = new CompletableFuture<>();
3477	>	ThreadExecutor executor = new ThreadExecutor();
3478	>	f.completeAsync(() -> v1, executor);
3479	>	assertSame(v1, f.join());
3480	>	checkCompletedNormally(f, v1);
3481	>	assertEquals(1, executor.count.get());
3482	>	}}
3483	>
3484	>	/**
3485	>	* completeAsync with given executor completes exceptionally if
3486	>	* given supplier throws
3487	>	*/
3488	>	public void testCompleteAsync4() {
3489	>	CompletableFuture<Integer> f = new CompletableFuture<>();
3490	>	CFException ex = new CFException();
3491	>	ThreadExecutor executor = new ThreadExecutor();
3492	>	f.completeAsync(() -> {if (true) throw ex; return 1;}, executor);
3493	>	try {
3494	>	f.join();
3495	>	shouldThrow();
3496	>	} catch (CompletionException success) {}
3497	>	checkCompletedWithWrappedException(f, ex);
3498	>	assertEquals(1, executor.count.get());
3499	>	}
3500	>
3501	>	/**
3502	>	* orTimeout completes with TimeoutException if not complete
3503	>	*/
3504	>	public void testOrTimeout_timesOut() {
3505	>	long timeoutMillis = timeoutMillis();
3506	>	CompletableFuture<Integer> f = new CompletableFuture<>();
3507	>	long startTime = System.nanoTime();
3508	>	f.orTimeout(timeoutMillis, MILLISECONDS);
3509	>	checkCompletedWithTimeoutException(f);
3510	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
3511	>	}
3512	>
3513	>	/**
3514	>	* orTimeout completes normally if completed before timeout
3515	>	*/
3516	>	public void testOrTimeout_completed() {
3517	>	for (Integer v1 : new Integer[] { 1, null })
3518	>	{
3519	>	CompletableFuture<Integer> f = new CompletableFuture<>();
3520	>	CompletableFuture<Integer> g = new CompletableFuture<>();
3521	>	long startTime = System.nanoTime();
3522	>	f.complete(v1);
3523	>	f.orTimeout(LONG_DELAY_MS, MILLISECONDS);
3524	>	g.orTimeout(LONG_DELAY_MS, MILLISECONDS);
3525	>	g.complete(v1);
3526	>	checkCompletedNormally(f, v1);
3527	>	checkCompletedNormally(g, v1);
3528	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS / 2);
3529	>	}}
3530	>
3531	>	/**
3532	>	* completeOnTimeout completes with given value if not complete
3533	>	*/
3534	>	public void testCompleteOnTimeout_timesOut() {
3535	>	testInParallel(() -> testCompleteOnTimeout_timesOut(42),
3536	>	() -> testCompleteOnTimeout_timesOut(null));
3537	>	}
3538	>
3539	>	public void testCompleteOnTimeout_timesOut(Integer v) {
3540	>	long timeoutMillis = timeoutMillis();
3541	>	CompletableFuture<Integer> f = new CompletableFuture<>();
3542	>	long startTime = System.nanoTime();
3543	>	f.completeOnTimeout(v, timeoutMillis, MILLISECONDS);
3544	>	assertSame(v, f.join());
3545	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
3546	>	f.complete(99);         // should have no effect
3547	>	checkCompletedNormally(f, v);
3548	>	}
3549	>
3550	>	/**
3551	>	* completeOnTimeout has no effect if completed within timeout
3552	>	*/
3553	>	public void testCompleteOnTimeout_completed() {
3554	>	for (Integer v1 : new Integer[] { 1, null })
3555	>	{
3556	>	CompletableFuture<Integer> f = new CompletableFuture<>();
3557	>	CompletableFuture<Integer> g = new CompletableFuture<>();
3558	>	long startTime = System.nanoTime();
3559	>	f.complete(v1);
3560	>	f.completeOnTimeout(-1, LONG_DELAY_MS, MILLISECONDS);
3561	>	g.completeOnTimeout(-1, LONG_DELAY_MS, MILLISECONDS);
3562	>	g.complete(v1);
3563	>	checkCompletedNormally(f, v1);
3564	>	checkCompletedNormally(g, v1);
3565	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS / 2);
3566	>	}}
3567	>
3568	>	/**
3569	>	* delayedExecutor returns an executor that delays submission
3570	>	*/
3571	>	public void testDelayedExecutor() {
3572	>	testInParallel(() -> testDelayedExecutor(null, null),
3573	>	() -> testDelayedExecutor(null, 1),
3574	>	() -> testDelayedExecutor(new ThreadExecutor(), 1),
3575	>	() -> testDelayedExecutor(new ThreadExecutor(), 1));
3576	>	}
3577	>
3578	>	public void testDelayedExecutor(Executor executor, Integer v) throws Exception {
3579	>	long timeoutMillis = timeoutMillis();
3580	>	// Use an "unreasonably long" long timeout to catch lingering threads
3581	>	long longTimeoutMillis = 1000 * 60 * 60 * 24;
3582	>	final Executor delayer, longDelayer;
3583	>	if (executor == null) {
3584	>	delayer = CompletableFuture.delayedExecutor(timeoutMillis, MILLISECONDS);
3585	>	longDelayer = CompletableFuture.delayedExecutor(longTimeoutMillis, MILLISECONDS);
3586	>	} else {
3587	>	delayer = CompletableFuture.delayedExecutor(timeoutMillis, MILLISECONDS, executor);
3588	>	longDelayer = CompletableFuture.delayedExecutor(longTimeoutMillis, MILLISECONDS, executor);
3589	>	}
3590	>	long startTime = System.nanoTime();
3591	>	CompletableFuture<Integer> f =
3592	>	CompletableFuture.supplyAsync(() -> v, delayer);
3593	>	CompletableFuture<Integer> g =
3594	>	CompletableFuture.supplyAsync(() -> v, longDelayer);
3595	>
3596	>	assertNull(g.getNow(null));
3597	>
3598	>	assertSame(v, f.get(LONG_DELAY_MS, MILLISECONDS));
3599	>	long millisElapsed = millisElapsedSince(startTime);
3600	>	assertTrue(millisElapsed >= timeoutMillis);
3601	>	assertTrue(millisElapsed < LONG_DELAY_MS / 2);
3602	>
3603	>	checkCompletedNormally(f, v);
3604	>
3605	>	checkIncomplete(g);
3606	>	assertTrue(g.cancel(true));
3607	>	}
3608	>
3609	>	//--- tests of implementation details; not part of official tck ---
3610	>
3611	>	Object resultOf(CompletableFuture<?> f) {
3612	>	try {
3613	>	java.lang.reflect.Field resultField
3614	>	= CompletableFuture.class.getDeclaredField("result");
3615	>	resultField.setAccessible(true);
3616	>	return resultField.get(f);
3617	>	} catch (Throwable t) { throw new AssertionError(t); }
3618	>	}
3619	>
3620	>	public void testExceptionPropagationReusesResultObject() {
3621	>	if (!testImplementationDetails) return;
3622	>	for (ExecutionMode m : ExecutionMode.values())
3623	>	{
3624	>	final CFException ex = new CFException();
3625	>	final CompletableFuture<Integer> v42 = CompletableFuture.completedFuture(42);
3626	>	final CompletableFuture<Integer> incomplete = new CompletableFuture<>();
3627	>
3628	>	List<Function<CompletableFuture<Integer>, CompletableFuture<?>>> funs
3629	>	= new ArrayList<>();
3630	>
3631	>	funs.add((y) -> m.thenRun(y, new Noop(m)));
3632	>	funs.add((y) -> m.thenAccept(y, new NoopConsumer(m)));
3633	>	funs.add((y) -> m.thenApply(y, new IncFunction(m)));
3634	>
3635	>	funs.add((y) -> m.runAfterEither(y, incomplete, new Noop(m)));
3636	>	funs.add((y) -> m.acceptEither(y, incomplete, new NoopConsumer(m)));
3637	>	funs.add((y) -> m.applyToEither(y, incomplete, new IncFunction(m)));
3638	>
3639	>	funs.add((y) -> m.runAfterBoth(y, v42, new Noop(m)));
3640	>	funs.add((y) -> m.thenAcceptBoth(y, v42, new SubtractAction(m)));
3641	>	funs.add((y) -> m.thenCombine(y, v42, new SubtractFunction(m)));
3642	>
3643	>	funs.add((y) -> m.whenComplete(y, (Integer x, Throwable t) -> {}));
3644	>
3645	>	funs.add((y) -> m.thenCompose(y, new CompletableFutureInc(m)));
3646	>
3647	>	funs.add((y) -> CompletableFuture.allOf(new CompletableFuture<?>[] {y, v42}));
3648	>	funs.add((y) -> CompletableFuture.anyOf(new CompletableFuture<?>[] {y, incomplete}));
3649	>
3650	>	for (Function<CompletableFuture<Integer>, CompletableFuture<?>>
3651	>	fun : funs) {
3652	>	CompletableFuture<Integer> f = new CompletableFuture<>();
3653	>	f.completeExceptionally(ex);
3654	>	CompletableFuture<Integer> src = m.thenApply(f, new IncFunction(m));
3655	>	checkCompletedWithWrappedException(src, ex);
3656	>	CompletableFuture<?> dep = fun.apply(src);
3657	>	checkCompletedWithWrappedException(dep, ex);
3658	>	assertSame(resultOf(src), resultOf(dep));
3659	>	}
3660	>
3661	>	for (Function<CompletableFuture<Integer>, CompletableFuture<?>>
3662	>	fun : funs) {
3663	>	CompletableFuture<Integer> f = new CompletableFuture<>();
3664	>	CompletableFuture<Integer> src = m.thenApply(f, new IncFunction(m));
3665	>	CompletableFuture<?> dep = fun.apply(src);
3666	>	f.completeExceptionally(ex);
3667	>	checkCompletedWithWrappedException(src, ex);
3668	>	checkCompletedWithWrappedException(dep, ex);
3669	>	assertSame(resultOf(src), resultOf(dep));
3670	>	}
3671	>
3672	>	for (boolean mayInterruptIfRunning : new boolean[] { true, false })
3673	>	for (Function<CompletableFuture<Integer>, CompletableFuture<?>>
3674	>	fun : funs) {
3675	>	CompletableFuture<Integer> f = new CompletableFuture<>();
3676	>	f.cancel(mayInterruptIfRunning);
3677	>	checkCancelled(f);
3678	>	CompletableFuture<Integer> src = m.thenApply(f, new IncFunction(m));
3679	>	checkCompletedWithWrappedCancellationException(src);
3680	>	CompletableFuture<?> dep = fun.apply(src);
3681	>	checkCompletedWithWrappedCancellationException(dep);
3682	>	assertSame(resultOf(src), resultOf(dep));
3683	>	}
3684	>
3685	>	for (boolean mayInterruptIfRunning : new boolean[] { true, false })
3686	>	for (Function<CompletableFuture<Integer>, CompletableFuture<?>>
3687	>	fun : funs) {
3688	>	CompletableFuture<Integer> f = new CompletableFuture<>();
3689	>	CompletableFuture<Integer> src = m.thenApply(f, new IncFunction(m));
3690	>	CompletableFuture<?> dep = fun.apply(src);
3691	>	f.cancel(mayInterruptIfRunning);
3692	>	checkCancelled(f);
3693	>	checkCompletedWithWrappedCancellationException(src);
3694	>	checkCompletedWithWrappedCancellationException(dep);
3695	>	assertSame(resultOf(src), resultOf(dep));
3696	>	}
3697	>	}}
3698	>
3699	>	/**
3700	>	* Minimal completion stages throw UOE for all non-CompletionStage methods
3701	>	*/
3702	>	public void testMinimalCompletionStage_minimality() {
3703	>	if (!testImplementationDetails) return;
3704	>	Function<Method, String> toSignature =
3705	>	(method) -> method.getName() + Arrays.toString(method.getParameterTypes());
3706	>	List<Method> minimalMethods =
3707	>	Stream.of(Object.class, CompletionStage.class)
3708	>	.map((klazz) -> Stream.of(klazz.getMethods()))
3709	>	.reduce(Stream::concat)
3710	>	.orElseGet(Stream::empty)
3711	>	.filter((method) -> (method.getModifiers() & Modifier.STATIC) == 0)
3712	>	.collect(Collectors.toList());
3713	>	// Methods from CompletableFuture permitted NOT to throw UOE
3714	>	String[] signatureWhitelist = {
3715	>	"newIncompleteFuture[]",
3716	>	"defaultExecutor[]",
3717	>	"minimalCompletionStage[]",
3718	>	"copy[]",
3719	>	};
3720	>	Set<String> permittedMethodSignatures =
3721	>	Stream.concat(minimalMethods.stream().map(toSignature),
3722	>	Stream.of(signatureWhitelist))
3723	>	.collect(Collectors.toSet());
3724	>	List<Method> allMethods = Stream.of(CompletableFuture.class.getMethods())
3725	>	.filter((method) -> (method.getModifiers() & Modifier.STATIC) == 0)
3726	>	.filter((method) -> !permittedMethodSignatures.contains(toSignature.apply(method)))
3727	>	.collect(Collectors.toList());
3728	>
3729	>	CompletionStage<Integer> minimalStage =
3730	>	new CompletableFuture<Integer>().minimalCompletionStage();
3731	>
3732	>	List<Method> bugs = new ArrayList<>();
3733	>	for (Method method : allMethods) {
3734	>	Class<?>[] parameterTypes = method.getParameterTypes();
3735	>	Object[] args = new Object[parameterTypes.length];
3736	>	// Manufacture boxed primitives for primitive params
3737	>	for (int i = 0; i < args.length; i++) {
3738	>	Class<?> type = parameterTypes[i];
3739	>	if (parameterTypes[i] == boolean.class)
3740	>	args[i] = false;
3741	>	else if (parameterTypes[i] == int.class)
3742	>	args[i] = 0;
3743	>	else if (parameterTypes[i] == long.class)
3744	>	args[i] = 0L;
3745	>	}
3746	>	try {
3747	>	method.invoke(minimalStage, args);
3748	>	bugs.add(method);
3749	>	}
3750	>	catch (java.lang.reflect.InvocationTargetException expected) {
3751	>	if (! (expected.getCause() instanceof UnsupportedOperationException)) {
3752	>	bugs.add(method);
3753	>	// expected.getCause().printStackTrace();
3754	>	}
3755	>	}
3756	>	catch (ReflectiveOperationException bad) { throw new Error(bad); }
3757	>	}
3758	>	if (!bugs.isEmpty())
3759	>	throw new Error("Methods did not throw UOE: " + bugs.toString());
3760	>	}
3761	>
3762	>	//     static <U> U join(CompletionStage<U> stage) {
3763	>	//         CompletableFuture<U> f = new CompletableFuture<>();
3764	>	//         stage.whenComplete((v, ex) -> {
3765	>	//             if (ex != null) f.completeExceptionally(ex); else f.complete(v);
3766	>	//         });
3767	>	//         return f.join();
3768	>	//     }
3769	>
3770	>	//     static <U> boolean isDone(CompletionStage<U> stage) {
3771	>	//         CompletableFuture<U> f = new CompletableFuture<>();
3772	>	//         stage.whenComplete((v, ex) -> {
3773	>	//             if (ex != null) f.completeExceptionally(ex); else f.complete(v);
3774	>	//         });
3775	>	//         return f.isDone();
3776	>	//     }
3777	>
3778	>	//     static <U> U join2(CompletionStage<U> stage) {
3779	>	//         return stage.toCompletableFuture().copy().join();
3780	>	//     }
3781	>
3782	>	//     static <U> boolean isDone2(CompletionStage<U> stage) {
3783	>	//         return stage.toCompletableFuture().copy().isDone();
3784	>	//     }
3785
3786		}

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