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Comparing jsr166/src/test/tck/CompletableFutureTest.java (file contents):
Revision 1.136 by jsr166, Sun Nov 15 20:17:11 2015 UTC vs.
Revision 1.152 by jsr166, Sun Jun 26 19:03:27 2016 UTC

#	Line 30 | 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;
35		import java.util.concurrent.TimeUnit;
36		import java.util.concurrent.atomic.AtomicInteger;
#	Line 459 | Line 460 | public class CompletableFutureTest exten
460		class FailingSupplier extends CheckedAction
461		implements Supplier<Integer>
462		{
463	<	FailingSupplier(ExecutionMode m) { super(m); }
463	>	final CFException ex;
464	>	FailingSupplier(ExecutionMode m) { super(m); ex = new CFException(); }
465		public Integer get() {
466		invoked();
467	<	throw new CFException();
467	>	throw ex;
468		}
469		}
470
471		class FailingConsumer extends CheckedIntegerAction
472		implements Consumer<Integer>
473		{
474	<	FailingConsumer(ExecutionMode m) { super(m); }
474	>	final CFException ex;
475	>	FailingConsumer(ExecutionMode m) { super(m); ex = new CFException(); }
476		public void accept(Integer x) {
477		invoked();
478		value = x;
479	<	throw new CFException();
479	>	throw ex;
480		}
481		}
482
483		class FailingBiConsumer extends CheckedIntegerAction
484		implements BiConsumer<Integer, Integer>
485		{
486	<	FailingBiConsumer(ExecutionMode m) { super(m); }
486	>	final CFException ex;
487	>	FailingBiConsumer(ExecutionMode m) { super(m); ex = new CFException(); }
488		public void accept(Integer x, Integer y) {
489		invoked();
490		value = subtract(x, y);
491	<	throw new CFException();
491	>	throw ex;
492		}
493		}
494
495		class FailingFunction extends CheckedIntegerAction
496		implements Function<Integer, Integer>
497		{
498	<	FailingFunction(ExecutionMode m) { super(m); }
498	>	final CFException ex;
499	>	FailingFunction(ExecutionMode m) { super(m); ex = new CFException(); }
500		public Integer apply(Integer x) {
501		invoked();
502		value = x;
503	<	throw new CFException();
503	>	throw ex;
504		}
505		}
506
507		class FailingBiFunction extends CheckedIntegerAction
508		implements BiFunction<Integer, Integer, Integer>
509		{
510	<	FailingBiFunction(ExecutionMode m) { super(m); }
510	>	final CFException ex;
511	>	FailingBiFunction(ExecutionMode m) { super(m); ex = new CFException(); }
512		public Integer apply(Integer x, Integer y) {
513		invoked();
514		value = subtract(x, y);
515	<	throw new CFException();
515	>	throw ex;
516		}
517		}
518
519		class FailingRunnable extends CheckedAction implements Runnable {
520	<	FailingRunnable(ExecutionMode m) { super(m); }
520	>	final CFException ex;
521	>	FailingRunnable(ExecutionMode m) { super(m); ex = new CFException(); }
522		public void run() {
523		invoked();
524	<	throw new CFException();
524	>	throw ex;
525		}
526		}
527
#	Line 534 | Line 541 | public class CompletableFutureTest exten
541		class FailingCompletableFutureFunction extends CheckedIntegerAction
542		implements Function<Integer, CompletableFuture<Integer>>
543		{
544	<	FailingCompletableFutureFunction(ExecutionMode m) { super(m); }
544	>	final CFException ex;
545	>	FailingCompletableFutureFunction(ExecutionMode m) { super(m); ex = new CFException(); }
546		public CompletableFuture<Integer> apply(Integer x) {
547		invoked();
548		value = x;
549	<	throw new CFException();
549	>	throw ex;
550		}
551		}
552
#	Line 1040 | Line 1048 | public class CompletableFutureTest exten
1048
1049		checkCompletedWithWrappedException(g, ex1);
1050		checkCompletedExceptionally(f, ex1);
1051	+	if (testImplementationDetails) {
1052	+	assertEquals(1, ex1.getSuppressed().length);
1053	+	assertSame(ex2, ex1.getSuppressed()[0]);
1054	+	}
1055		assertEquals(1, a.get());
1056		}}
1057
#	Line 1218 | Line 1230 | public class CompletableFutureTest exten
1230		{
1231		final FailingRunnable r = new FailingRunnable(m);
1232		final CompletableFuture<Void> f = m.runAsync(r);
1233	<	checkCompletedWithWrappedCFException(f);
1233	>	checkCompletedWithWrappedException(f, r.ex);
1234		r.assertInvoked();
1235		}}
1236
#	Line 1252 | Line 1264 | public class CompletableFutureTest exten
1264		{
1265		FailingSupplier r = new FailingSupplier(m);
1266		CompletableFuture<Integer> f = m.supplyAsync(r);
1267	<	checkCompletedWithWrappedCFException(f);
1267	>	checkCompletedWithWrappedException(f, r.ex);
1268		r.assertInvoked();
1269		}}
1270
#	Line 1374 | Line 1386 | public class CompletableFutureTest exten
1386		final CompletableFuture<Void> h4 = m.runAfterBoth(f, f, rs[4]);
1387		final CompletableFuture<Void> h5 = m.runAfterEither(f, f, rs[5]);
1388
1389	<	checkCompletedWithWrappedCFException(h0);
1390	<	checkCompletedWithWrappedCFException(h1);
1391	<	checkCompletedWithWrappedCFException(h2);
1392	<	checkCompletedWithWrappedCFException(h3);
1393	<	checkCompletedWithWrappedCFException(h4);
1394	<	checkCompletedWithWrappedCFException(h5);
1389	>	checkCompletedWithWrappedException(h0, rs[0].ex);
1390	>	checkCompletedWithWrappedException(h1, rs[1].ex);
1391	>	checkCompletedWithWrappedException(h2, rs[2].ex);
1392	>	checkCompletedWithWrappedException(h3, rs[3].ex);
1393	>	checkCompletedWithWrappedException(h4, rs[4].ex);
1394	>	checkCompletedWithWrappedException(h5, rs[5].ex);
1395		checkCompletedNormally(f, v1);
1396		}}
1397
#	Line 1478 | Line 1490 | public class CompletableFutureTest exten
1490		final CompletableFuture<Integer> h2 = m.thenApply(f, rs[2]);
1491		final CompletableFuture<Integer> h3 = m.applyToEither(f, f, rs[3]);
1492
1493	<	checkCompletedWithWrappedCFException(h0);
1494	<	checkCompletedWithWrappedCFException(h1);
1495	<	checkCompletedWithWrappedCFException(h2);
1496	<	checkCompletedWithWrappedCFException(h3);
1493	>	checkCompletedWithWrappedException(h0, rs[0].ex);
1494	>	checkCompletedWithWrappedException(h1, rs[1].ex);
1495	>	checkCompletedWithWrappedException(h2, rs[2].ex);
1496	>	checkCompletedWithWrappedException(h3, rs[3].ex);
1497		checkCompletedNormally(f, v1);
1498		}}
1499
#	Line 1580 | Line 1592 | public class CompletableFutureTest exten
1592		final CompletableFuture<Void> h2 = m.thenAccept(f, rs[2]);
1593		final CompletableFuture<Void> h3 = m.acceptEither(f, f, rs[3]);
1594
1595	<	checkCompletedWithWrappedCFException(h0);
1596	<	checkCompletedWithWrappedCFException(h1);
1597	<	checkCompletedWithWrappedCFException(h2);
1598	<	checkCompletedWithWrappedCFException(h3);
1595	>	checkCompletedWithWrappedException(h0, rs[0].ex);
1596	>	checkCompletedWithWrappedException(h1, rs[1].ex);
1597	>	checkCompletedWithWrappedException(h2, rs[2].ex);
1598	>	checkCompletedWithWrappedException(h3, rs[3].ex);
1599		checkCompletedNormally(f, v1);
1600		}}
1601
#	Line 1745 | Line 1757 | public class CompletableFutureTest exten
1757		assertTrue(snd.complete(w2));
1758		final CompletableFuture<Integer> h3 = m.thenCombine(f, g, r3);
1759
1760	<	checkCompletedWithWrappedCFException(h1);
1761	<	checkCompletedWithWrappedCFException(h2);
1762	<	checkCompletedWithWrappedCFException(h3);
1760	>	checkCompletedWithWrappedException(h1, r1.ex);
1761	>	checkCompletedWithWrappedException(h2, r2.ex);
1762	>	checkCompletedWithWrappedException(h3, r3.ex);
1763		r1.assertInvoked();
1764		r2.assertInvoked();
1765		r3.assertInvoked();
#	Line 1909 | Line 1921 | public class CompletableFutureTest exten
1921		assertTrue(snd.complete(w2));
1922		final CompletableFuture<Void> h3 = m.thenAcceptBoth(f, g, r3);
1923
1924	<	checkCompletedWithWrappedCFException(h1);
1925	<	checkCompletedWithWrappedCFException(h2);
1926	<	checkCompletedWithWrappedCFException(h3);
1924	>	checkCompletedWithWrappedException(h1, r1.ex);
1925	>	checkCompletedWithWrappedException(h2, r2.ex);
1926	>	checkCompletedWithWrappedException(h3, r3.ex);
1927		r1.assertInvoked();
1928		r2.assertInvoked();
1929		r3.assertInvoked();
#	Line 2073 | Line 2085 | public class CompletableFutureTest exten
2085		assertTrue(snd.complete(w2));
2086		final CompletableFuture<Void> h3 = m.runAfterBoth(f, g, r3);
2087
2088	<	checkCompletedWithWrappedCFException(h1);
2089	<	checkCompletedWithWrappedCFException(h2);
2090	<	checkCompletedWithWrappedCFException(h3);
2088	>	checkCompletedWithWrappedException(h1, r1.ex);
2089	>	checkCompletedWithWrappedException(h2, r2.ex);
2090	>	checkCompletedWithWrappedException(h3, r3.ex);
2091		r1.assertInvoked();
2092		r2.assertInvoked();
2093		r3.assertInvoked();
#	Line 2365 | Line 2377 | public class CompletableFutureTest exten
2377		f.complete(v1);
2378		final CompletableFuture<Integer> h2 = m.applyToEither(f, g, rs[2]);
2379		final CompletableFuture<Integer> h3 = m.applyToEither(g, f, rs[3]);
2380	<	checkCompletedWithWrappedCFException(h0);
2381	<	checkCompletedWithWrappedCFException(h1);
2382	<	checkCompletedWithWrappedCFException(h2);
2383	<	checkCompletedWithWrappedCFException(h3);
2380	>	checkCompletedWithWrappedException(h0, rs[0].ex);
2381	>	checkCompletedWithWrappedException(h1, rs[1].ex);
2382	>	checkCompletedWithWrappedException(h2, rs[2].ex);
2383	>	checkCompletedWithWrappedException(h3, rs[3].ex);
2384		for (int i = 0; i < 4; i++) rs[i].assertValue(v1);
2385
2386		g.complete(v2);
#	Line 2377 | Line 2389 | public class CompletableFutureTest exten
2389		final CompletableFuture<Integer> h4 = m.applyToEither(f, g, rs[4]);
2390		final CompletableFuture<Integer> h5 = m.applyToEither(g, f, rs[5]);
2391
2392	<	checkCompletedWithWrappedCFException(h4);
2392	>	checkCompletedWithWrappedException(h4, rs[4].ex);
2393		assertTrue(Objects.equals(v1, rs[4].value) ||
2394		Objects.equals(v2, rs[4].value));
2395	<	checkCompletedWithWrappedCFException(h5);
2395	>	checkCompletedWithWrappedException(h5, rs[5].ex);
2396		assertTrue(Objects.equals(v1, rs[5].value) ||
2397		Objects.equals(v2, rs[5].value));
2398
#	Line 2624 | Line 2636 | public class CompletableFutureTest exten
2636		f.complete(v1);
2637		final CompletableFuture<Void> h2 = m.acceptEither(f, g, rs[2]);
2638		final CompletableFuture<Void> h3 = m.acceptEither(g, f, rs[3]);
2639	<	checkCompletedWithWrappedCFException(h0);
2640	<	checkCompletedWithWrappedCFException(h1);
2641	<	checkCompletedWithWrappedCFException(h2);
2642	<	checkCompletedWithWrappedCFException(h3);
2639	>	checkCompletedWithWrappedException(h0, rs[0].ex);
2640	>	checkCompletedWithWrappedException(h1, rs[1].ex);
2641	>	checkCompletedWithWrappedException(h2, rs[2].ex);
2642	>	checkCompletedWithWrappedException(h3, rs[3].ex);
2643		for (int i = 0; i < 4; i++) rs[i].assertValue(v1);
2644
2645		g.complete(v2);
#	Line 2636 | Line 2648 | public class CompletableFutureTest exten
2648		final CompletableFuture<Void> h4 = m.acceptEither(f, g, rs[4]);
2649		final CompletableFuture<Void> h5 = m.acceptEither(g, f, rs[5]);
2650
2651	<	checkCompletedWithWrappedCFException(h4);
2651	>	checkCompletedWithWrappedException(h4, rs[4].ex);
2652		assertTrue(Objects.equals(v1, rs[4].value) ||
2653		Objects.equals(v2, rs[4].value));
2654	<	checkCompletedWithWrappedCFException(h5);
2654	>	checkCompletedWithWrappedException(h5, rs[5].ex);
2655		assertTrue(Objects.equals(v1, rs[5].value) ||
2656		Objects.equals(v2, rs[5].value));
2657
#	Line 2879 | Line 2891 | public class CompletableFutureTest exten
2891		assertTrue(f.complete(v1));
2892		final CompletableFuture<Void> h2 = m.runAfterEither(f, g, rs[2]);
2893		final CompletableFuture<Void> h3 = m.runAfterEither(g, f, rs[3]);
2894	<	checkCompletedWithWrappedCFException(h0);
2895	<	checkCompletedWithWrappedCFException(h1);
2896	<	checkCompletedWithWrappedCFException(h2);
2897	<	checkCompletedWithWrappedCFException(h3);
2894	>	checkCompletedWithWrappedException(h0, rs[0].ex);
2895	>	checkCompletedWithWrappedException(h1, rs[1].ex);
2896	>	checkCompletedWithWrappedException(h2, rs[2].ex);
2897	>	checkCompletedWithWrappedException(h3, rs[3].ex);
2898		for (int i = 0; i < 4; i++) rs[i].assertInvoked();
2899		assertTrue(g.complete(v2));
2900		final CompletableFuture<Void> h4 = m.runAfterEither(f, g, rs[4]);
2901		final CompletableFuture<Void> h5 = m.runAfterEither(g, f, rs[5]);
2902	<	checkCompletedWithWrappedCFException(h4);
2903	<	checkCompletedWithWrappedCFException(h5);
2902	>	checkCompletedWithWrappedException(h4, rs[4].ex);
2903	>	checkCompletedWithWrappedException(h5, rs[5].ex);
2904
2905		checkCompletedNormally(f, v1);
2906		checkCompletedNormally(g, v2);
#	Line 2949 | Line 2961 | public class CompletableFutureTest exten
2961		final CompletableFuture<Integer> g = m.thenCompose(f, r);
2962		if (createIncomplete) assertTrue(f.complete(v1));
2963
2964	<	checkCompletedWithWrappedCFException(g);
2964	>	checkCompletedWithWrappedException(g, r.ex);
2965		checkCompletedNormally(f, v1);
2966		}}
2967
#	Line 3058 | Line 3070 | public class CompletableFutureTest exten
3070		}
3071		}
3072
3073	<	public void testAllOf_backwards() throws Exception {
3073	>	public void testAllOf_normal_backwards() throws Exception {
3074		for (int k = 1; k < 10; k++) {
3075		CompletableFuture<Integer>[] fs
3076		= (CompletableFuture<Integer>[]) new CompletableFuture[k];
#	Line 3291 | Line 3303 | public class CompletableFutureTest exten
3303		() -> f.obtrudeException(null),
3304
3305		() -> CompletableFuture.delayedExecutor(1L, SECONDS, null),
3306	<	() -> CompletableFuture.delayedExecutor(1L, null, new ThreadExecutor()),
3306	>	() -> CompletableFuture.delayedExecutor(1L, null, exec),
3307		() -> CompletableFuture.delayedExecutor(1L, null),
3308
3309		() -> f.orTimeout(1L, null),
#	Line 3306 | Line 3318 | public class CompletableFutureTest exten
3318		}
3319
3320		/**
3321	+	* Test submissions to an executor that rejects all tasks.
3322	+	*/
3323	+	public void testRejectingExecutor() {
3324	+	final RejectedExecutionException ex = new RejectedExecutionException();
3325	+	final Executor e = (Runnable r) -> { throw ex; };
3326	+
3327	+	for (Integer v : new Integer[] { 1, null }) {
3328	+
3329	+	final CompletableFuture<Integer> complete = CompletableFuture.completedFuture(v);
3330	+	final CompletableFuture<Integer> incomplete = new CompletableFuture<>();
3331	+
3332	+	List<CompletableFuture<?>> futures = new ArrayList<>();
3333	+
3334	+	List<CompletableFuture<Integer>> srcs = new ArrayList<>();
3335	+	srcs.add(complete);
3336	+	srcs.add(incomplete);
3337	+
3338	+	for (CompletableFuture<Integer> src : srcs) {
3339	+	List<CompletableFuture<?>> fs = new ArrayList<>();
3340	+	fs.add(src.thenRunAsync(() -> {}, e));
3341	+	fs.add(src.thenAcceptAsync((z) -> {}, e));
3342	+	fs.add(src.thenApplyAsync((z) -> z, e));
3343	+
3344	+	fs.add(src.thenCombineAsync(src, (x, y) -> x, e));
3345	+	fs.add(src.thenAcceptBothAsync(src, (x, y) -> {}, e));
3346	+	fs.add(src.runAfterBothAsync(src, () -> {}, e));
3347	+
3348	+	fs.add(src.applyToEitherAsync(src, (z) -> z, e));
3349	+	fs.add(src.acceptEitherAsync(src, (z) -> {}, e));
3350	+	fs.add(src.runAfterEitherAsync(src, () -> {}, e));
3351	+
3352	+	fs.add(src.thenComposeAsync((z) -> null, e));
3353	+	fs.add(src.whenCompleteAsync((z, t) -> {}, e));
3354	+	fs.add(src.handleAsync((z, t) -> null, e));
3355	+
3356	+	for (CompletableFuture<?> future : fs) {
3357	+	if (src.isDone())
3358	+	checkCompletedWithWrappedException(future, ex);
3359	+	else
3360	+	checkIncomplete(future);
3361	+	}
3362	+	futures.addAll(fs);
3363	+	}
3364	+
3365	+	{
3366	+	List<CompletableFuture<?>> fs = new ArrayList<>();
3367	+
3368	+	fs.add(complete.thenCombineAsync(incomplete, (x, y) -> x, e));
3369	+	fs.add(incomplete.thenCombineAsync(complete, (x, y) -> x, e));
3370	+
3371	+	fs.add(complete.thenAcceptBothAsync(incomplete, (x, y) -> {}, e));
3372	+	fs.add(incomplete.thenAcceptBothAsync(complete, (x, y) -> {}, e));
3373	+
3374	+	fs.add(complete.runAfterBothAsync(incomplete, () -> {}, e));
3375	+	fs.add(incomplete.runAfterBothAsync(complete, () -> {}, e));
3376	+
3377	+	for (CompletableFuture<?> future : fs)
3378	+	checkIncomplete(future);
3379	+	futures.addAll(fs);
3380	+	}
3381	+
3382	+	{
3383	+	List<CompletableFuture<?>> fs = new ArrayList<>();
3384	+
3385	+	fs.add(complete.applyToEitherAsync(incomplete, (z) -> z, e));
3386	+	fs.add(incomplete.applyToEitherAsync(complete, (z) -> z, e));
3387	+
3388	+	fs.add(complete.acceptEitherAsync(incomplete, (z) -> {}, e));
3389	+	fs.add(incomplete.acceptEitherAsync(complete, (z) -> {}, e));
3390	+
3391	+	fs.add(complete.runAfterEitherAsync(incomplete, () -> {}, e));
3392	+	fs.add(incomplete.runAfterEitherAsync(complete, () -> {}, e));
3393	+
3394	+	for (CompletableFuture<?> future : fs)
3395	+	checkCompletedWithWrappedException(future, ex);
3396	+	futures.addAll(fs);
3397	+	}
3398	+
3399	+	incomplete.complete(v);
3400	+
3401	+	for (CompletableFuture<?> future : futures)
3402	+	checkCompletedWithWrappedException(future, ex);
3403	+	}
3404	+	}
3405	+
3406	+	/**
3407		* toCompletableFuture returns this CompletableFuture.
3408		*/
3409		public void testToCompletableFuture() {
#	Line 3521 | Line 3619 | public class CompletableFutureTest exten
3619		long timeoutMillis = timeoutMillis();
3620		CompletableFuture<Integer> f = new CompletableFuture<>();
3621		long startTime = System.nanoTime();
3622	<	f.orTimeout(timeoutMillis, MILLISECONDS);
3622	>	assertSame(f, f.orTimeout(timeoutMillis, MILLISECONDS));
3623		checkCompletedWithTimeoutException(f);
3624		assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
3625		}
#	Line 3536 | Line 3634 | public class CompletableFutureTest exten
3634		CompletableFuture<Integer> g = new CompletableFuture<>();
3635		long startTime = System.nanoTime();
3636		f.complete(v1);
3637	<	f.orTimeout(LONG_DELAY_MS, MILLISECONDS);
3638	<	g.orTimeout(LONG_DELAY_MS, MILLISECONDS);
3637	>	assertSame(f, f.orTimeout(LONG_DELAY_MS, MILLISECONDS));
3638	>	assertSame(g, g.orTimeout(LONG_DELAY_MS, MILLISECONDS));
3639		g.complete(v1);
3640		checkCompletedNormally(f, v1);
3641		checkCompletedNormally(g, v1);
#	Line 3552 | Line 3650 | public class CompletableFutureTest exten
3650		() -> testCompleteOnTimeout_timesOut(null));
3651		}
3652
3653	+	/**
3654	+	* completeOnTimeout completes with given value if not complete
3655	+	*/
3656		public void testCompleteOnTimeout_timesOut(Integer v) {
3657		long timeoutMillis = timeoutMillis();
3658		CompletableFuture<Integer> f = new CompletableFuture<>();
3659		long startTime = System.nanoTime();
3660	<	f.completeOnTimeout(v, timeoutMillis, MILLISECONDS);
3660	>	assertSame(f, f.completeOnTimeout(v, timeoutMillis, MILLISECONDS));
3661		assertSame(v, f.join());
3662		assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
3663		f.complete(99);         // should have no effect
#	Line 3573 | Line 3674 | public class CompletableFutureTest exten
3674		CompletableFuture<Integer> g = new CompletableFuture<>();
3675		long startTime = System.nanoTime();
3676		f.complete(v1);
3677	<	f.completeOnTimeout(-1, LONG_DELAY_MS, MILLISECONDS);
3678	<	g.completeOnTimeout(-1, LONG_DELAY_MS, MILLISECONDS);
3677	>	assertSame(f, f.completeOnTimeout(-1, LONG_DELAY_MS, MILLISECONDS));
3678	>	assertSame(g, g.completeOnTimeout(-1, LONG_DELAY_MS, MILLISECONDS));
3679		g.complete(v1);
3680		checkCompletedNormally(f, v1);
3681		checkCompletedNormally(g, v1);
#	Line 3625 | Line 3726 | public class CompletableFutureTest exten
3726		//--- tests of implementation details; not part of official tck ---
3727
3728		Object resultOf(CompletableFuture<?> f) {
3729	+	SecurityManager sm = System.getSecurityManager();
3730	+	if (sm != null) {
3731	+	try {
3732	+	System.setSecurityManager(null);
3733	+	} catch (SecurityException giveUp) {
3734	+	return "Reflection not available";
3735	+	}
3736	+	}
3737	+
3738		try {
3739		java.lang.reflect.Field resultField
3740		= CompletableFuture.class.getDeclaredField("result");
3741		resultField.setAccessible(true);
3742		return resultField.get(f);
3743	<	} catch (Throwable t) { throw new AssertionError(t); }
3743	>	} catch (Throwable t) {
3744	>	throw new AssertionError(t);
3745	>	} finally {
3746	>	if (sm != null) System.setSecurityManager(sm);
3747	>	}
3748		}
3749
3750		public void testExceptionPropagationReusesResultObject() {
#	Line 3653 | Line 3767 | public class CompletableFutureTest exten
3767		funs.add((y) -> m.applyToEither(y, incomplete, new IncFunction(m)));
3768
3769		funs.add((y) -> m.runAfterBoth(y, v42, new Noop(m)));
3770	+	funs.add((y) -> m.runAfterBoth(v42, y, new Noop(m)));
3771		funs.add((y) -> m.thenAcceptBoth(y, v42, new SubtractAction(m)));
3772	+	funs.add((y) -> m.thenAcceptBoth(v42, y, new SubtractAction(m)));
3773		funs.add((y) -> m.thenCombine(y, v42, new SubtractFunction(m)));
3774	+	funs.add((y) -> m.thenCombine(v42, y, new SubtractFunction(m)));
3775
3776		funs.add((y) -> m.whenComplete(y, (Integer r, Throwable t) -> {}));
3777
3778		funs.add((y) -> m.thenCompose(y, new CompletableFutureInc(m)));
3779
3780	+	funs.add((y) -> CompletableFuture.allOf(new CompletableFuture<?>[] {y}));
3781		funs.add((y) -> CompletableFuture.allOf(new CompletableFuture<?>[] {y, v42}));
3782	+	funs.add((y) -> CompletableFuture.allOf(new CompletableFuture<?>[] {v42, y}));
3783	+	funs.add((y) -> CompletableFuture.anyOf(new CompletableFuture<?>[] {y}));
3784		funs.add((y) -> CompletableFuture.anyOf(new CompletableFuture<?>[] {y, incomplete}));
3785	+	funs.add((y) -> CompletableFuture.anyOf(new CompletableFuture<?>[] {incomplete, y}));
3786
3787		for (Function<CompletableFuture<Integer>, CompletableFuture<?>>
3788		fun : funs) {
#	Line 3826 | Line 3947 | public class CompletableFutureTest exten
3947		AtomicReference<Throwable> firstFailure = new AtomicReference<>(null);
3948		}
3949
3950	<	// Monadic "plus"
3950	>	/** Implements "monadic plus". */
3951		static <T> CompletableFuture<T> plus(CompletableFuture<? extends T> f,
3952		CompletableFuture<? extends T> g) {
3953		PlusFuture<T> plus = new PlusFuture<T>();
3954		BiConsumer<T, Throwable> action = (T result, Throwable ex) -> {
3955	<	if (ex == null) {
3956	<	if (plus.complete(result))
3957	<	if (plus.firstFailure.get() != null)
3955	>	try {
3956	>	if (ex == null) {
3957	>	if (plus.complete(result))
3958	>	if (plus.firstFailure.get() != null)
3959	>	plus.firstFailure.set(null);
3960	>	}
3961	>	else if (plus.firstFailure.compareAndSet(null, ex)) {
3962	>	if (plus.isDone())
3963		plus.firstFailure.set(null);
3964	<	}
3965	<	else if (plus.firstFailure.compareAndSet(null, ex)) {
3966	<	if (plus.isDone())
3967	<	plus.firstFailure.set(null);
3968	<	}
3969	<	else {
3970	<	// first failure has precedence
3971	<	Throwable first = plus.firstFailure.getAndSet(null);
3972	<
3973	<	// may fail with "Self-suppression not permitted"
3974	<	try { first.addSuppressed(ex); }
3975	<	catch (Exception ignored) {}
3976	<
3851	<	plus.completeExceptionally(first);
3964	>	}
3965	>	else {
3966	>	// first failure has precedence
3967	>	Throwable first = plus.firstFailure.getAndSet(null);
3968	>
3969	>	// may fail with "Self-suppression not permitted"
3970	>	try { first.addSuppressed(ex); }
3971	>	catch (Exception ignored) {}
3972	>
3973	>	plus.completeExceptionally(first);
3974	>	}
3975	>	} catch (Throwable unexpected) {
3976	>	plus.completeExceptionally(unexpected);
3977		}
3978		};
3979		f.whenComplete(action);
#	Line 3917 | Line 4042 | public class CompletableFutureTest exten
4042		Monad.plus(godot, Monad.unit(5L)));
4043		}
4044
4045	+	/**
4046	+	* A single CompletableFuture with many dependents.
4047	+	* A demo of scalability - runtime is O(n).
4048	+	*/
4049	+	public void testManyDependents() throws Throwable {
4050	+	final int n = 1_000;
4051	+	final CompletableFuture<Void> head = new CompletableFuture<>();
4052	+	final CompletableFuture<Void> complete = CompletableFuture.completedFuture((Void)null);
4053	+	final AtomicInteger count = new AtomicInteger(0);
4054	+	for (int i = 0; i < n; i++) {
4055	+	head.thenRun(() -> count.getAndIncrement());
4056	+	head.thenAccept((x) -> count.getAndIncrement());
4057	+	head.thenApply((x) -> count.getAndIncrement());
4058	+
4059	+	head.runAfterBoth(complete, () -> count.getAndIncrement());
4060	+	head.thenAcceptBoth(complete, (x, y) -> count.getAndIncrement());
4061	+	head.thenCombine(complete, (x, y) -> count.getAndIncrement());
4062	+	complete.runAfterBoth(head, () -> count.getAndIncrement());
4063	+	complete.thenAcceptBoth(head, (x, y) -> count.getAndIncrement());
4064	+	complete.thenCombine(head, (x, y) -> count.getAndIncrement());
4065	+
4066	+	head.runAfterEither(new CompletableFuture<Void>(), () -> count.getAndIncrement());
4067	+	head.acceptEither(new CompletableFuture<Void>(), (x) -> count.getAndIncrement());
4068	+	head.applyToEither(new CompletableFuture<Void>(), (x) -> count.getAndIncrement());
4069	+	new CompletableFuture<Void>().runAfterEither(head, () -> count.getAndIncrement());
4070	+	new CompletableFuture<Void>().acceptEither(head, (x) -> count.getAndIncrement());
4071	+	new CompletableFuture<Void>().applyToEither(head, (x) -> count.getAndIncrement());
4072	+	}
4073	+	head.complete(null);
4074	+	assertEquals(5 * 3 * n, count.get());
4075	+	}
4076	+
4077		//     static <U> U join(CompletionStage<U> stage) {
4078		//         CompletableFuture<U> f = new CompletableFuture<>();
4079		//         stage.whenComplete((v, ex) -> {

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