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Comparing jsr166/src/test/tck/CompletableFutureTest.java (file contents):
Revision 1.167 by jsr166, Sun Jul 17 17:49:23 2016 UTC vs.
Revision 1.187 by jsr166, Mon Jul 3 21:18:37 2017 UTC

#	Line 32 | Line 32 | 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;
35		import java.util.concurrent.atomic.AtomicInteger;
36		import java.util.concurrent.atomic.AtomicReference;
37		import java.util.function.BiConsumer;
#	Line 65 | Line 64 | public class CompletableFutureTest exten
64		assertNull(f.getNow(null));
65		} catch (Throwable fail) { threadUnexpectedException(fail); }
66		try {
67	<	f.get(0L, SECONDS);
67	>	f.get(randomExpiredTimeout(), randomTimeUnit());
68		shouldThrow();
69		}
70		catch (TimeoutException success) {}
#	Line 77 | Line 76 | public class CompletableFutureTest exten
76
77		try {
78		assertEquals(value, f.join());
80	–	} catch (Throwable fail) { threadUnexpectedException(fail); }
81	–	try {
79		assertEquals(value, f.getNow(null));
83	–	} catch (Throwable fail) { threadUnexpectedException(fail); }
84	–	try {
80		assertEquals(value, f.get());
81		} catch (Throwable fail) { threadUnexpectedException(fail); }
82		assertTrue(f.isDone());
#	Line 94 | Line 89 | public class CompletableFutureTest exten
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();
92	>	Throwable exceptionalCompletion(CompletableFuture<?> f) {
93	>	// handle (and whenComplete and exceptionally) can distinguish
94	>	// between "direct" and "wrapped" exceptional completion
95	>	return f.handle((u, t) -> t).join();
96		}
97
98		void checkCompletedExceptionally(CompletableFuture<?> f,
#	Line 148 | Line 143 | public class CompletableFutureTest exten
143
144		void checkCompletedWithWrappedCFException(CompletableFuture<?> f) {
145		checkCompletedExceptionally(f, true,
146	<	(t) -> assertTrue(t instanceof CFException));
146	>	t -> assertTrue(t instanceof CFException));
147		}
148
149		void checkCompletedWithWrappedCancellationException(CompletableFuture<?> f) {
150		checkCompletedExceptionally(f, true,
151	<	(t) -> assertTrue(t instanceof CancellationException));
151	>	t -> assertTrue(t instanceof CancellationException));
152		}
153
154		void checkCompletedWithTimeoutException(CompletableFuture<?> f) {
155		checkCompletedExceptionally(f, false,
156	<	(t) -> assertTrue(t instanceof TimeoutException));
156	>	t -> assertTrue(t instanceof TimeoutException));
157		}
158
159		void checkCompletedWithWrappedException(CompletableFuture<?> f,
160		Throwable ex) {
161	<	checkCompletedExceptionally(f, true, (t) -> assertSame(t, 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));
165	>	checkCompletedExceptionally(f, false, t -> assertSame(t, ex));
166		}
167
168		void checkCancelled(CompletableFuture<?> f) {
#	Line 362 | Line 357 | public class CompletableFutureTest exten
357		checkCompletedNormally(f, "test");
358		}
359
360	<	abstract class CheckedAction {
360	>	abstract static class CheckedAction {
361		int invocationCount = 0;
362		final ExecutionMode m;
363		CheckedAction(ExecutionMode m) { this.m = m; }
#	Line 374 | Line 369 | public class CompletableFutureTest exten
369		void assertInvoked() { assertEquals(1, invocationCount); }
370		}
371
372	<	abstract class CheckedIntegerAction extends CheckedAction {
372	>	abstract static class CheckedIntegerAction extends CheckedAction {
373		Integer value;
374		CheckedIntegerAction(ExecutionMode m) { super(m); }
375		void assertValue(Integer expected) {
#	Line 383 | Line 378 | public class CompletableFutureTest exten
378		}
379		}
380
381	<	class IntegerSupplier extends CheckedAction
381	>	static class IntegerSupplier extends CheckedAction
382		implements Supplier<Integer>
383		{
384		final Integer value;
#	Line 402 | Line 397 | public class CompletableFutureTest exten
397		return (x == null) ? null : x + 1;
398		}
399
400	<	class NoopConsumer extends CheckedIntegerAction
400	>	static class NoopConsumer extends CheckedIntegerAction
401		implements Consumer<Integer>
402		{
403		NoopConsumer(ExecutionMode m) { super(m); }
#	Line 412 | Line 407 | public class CompletableFutureTest exten
407		}
408		}
409
410	<	class IncFunction extends CheckedIntegerAction
410	>	static class IncFunction extends CheckedIntegerAction
411		implements Function<Integer,Integer>
412		{
413		IncFunction(ExecutionMode m) { super(m); }
#	Line 430 | Line 425 | public class CompletableFutureTest exten
425		- ((y == null) ? 99 : y.intValue());
426		}
427
428	<	class SubtractAction extends CheckedIntegerAction
428	>	static class SubtractAction extends CheckedIntegerAction
429		implements BiConsumer<Integer, Integer>
430		{
431		SubtractAction(ExecutionMode m) { super(m); }
#	Line 440 | Line 435 | public class CompletableFutureTest exten
435		}
436		}
437
438	<	class SubtractFunction extends CheckedIntegerAction
438	>	static class SubtractFunction extends CheckedIntegerAction
439		implements BiFunction<Integer, Integer, Integer>
440		{
441		SubtractFunction(ExecutionMode m) { super(m); }
#	Line 450 | Line 445 | public class CompletableFutureTest exten
445		}
446		}
447
448	<	class Noop extends CheckedAction implements Runnable {
448	>	static class Noop extends CheckedAction implements Runnable {
449		Noop(ExecutionMode m) { super(m); }
450		public void run() {
451		invoked();
452		}
453		}
454
455	<	class FailingSupplier extends CheckedAction
455	>	static class FailingSupplier extends CheckedAction
456		implements Supplier<Integer>
457		{
458		final CFException ex;
#	Line 468 | Line 463 | public class CompletableFutureTest exten
463		}
464		}
465
466	<	class FailingConsumer extends CheckedIntegerAction
466	>	static class FailingConsumer extends CheckedIntegerAction
467		implements Consumer<Integer>
468		{
469		final CFException ex;
#	Line 480 | Line 475 | public class CompletableFutureTest exten
475		}
476		}
477
478	<	class FailingBiConsumer extends CheckedIntegerAction
478	>	static class FailingBiConsumer extends CheckedIntegerAction
479		implements BiConsumer<Integer, Integer>
480		{
481		final CFException ex;
#	Line 492 | Line 487 | public class CompletableFutureTest exten
487		}
488		}
489
490	<	class FailingFunction extends CheckedIntegerAction
490	>	static class FailingFunction extends CheckedIntegerAction
491		implements Function<Integer, Integer>
492		{
493		final CFException ex;
#	Line 504 | Line 499 | public class CompletableFutureTest exten
499		}
500		}
501
502	<	class FailingBiFunction extends CheckedIntegerAction
502	>	static class FailingBiFunction extends CheckedIntegerAction
503		implements BiFunction<Integer, Integer, Integer>
504		{
505		final CFException ex;
#	Line 516 | Line 511 | public class CompletableFutureTest exten
511		}
512		}
513
514	<	class FailingRunnable extends CheckedAction implements Runnable {
514	>	static class FailingRunnable extends CheckedAction implements Runnable {
515		final CFException ex;
516		FailingRunnable(ExecutionMode m) { super(m); ex = new CFException(); }
517		public void run() {
#	Line 525 | Line 520 | public class CompletableFutureTest exten
520		}
521		}
522
523	<	class CompletableFutureInc extends CheckedIntegerAction
523	>	static class CompletableFutureInc extends CheckedIntegerAction
524		implements Function<Integer, CompletableFuture<Integer>>
525		{
526		CompletableFutureInc(ExecutionMode m) { super(m); }
#	Line 538 | Line 533 | public class CompletableFutureTest exten
533		}
534		}
535
536	<	class FailingCompletableFutureFunction extends CheckedIntegerAction
536	>	static class FailingCompletableFutureFunction extends CheckedIntegerAction
537		implements Function<Integer, CompletableFuture<Integer>>
538		{
539		final CFException ex;
#	Line 1243 | Line 1238 | public class CompletableFutureTest exten
1238		r.assertInvoked();
1239		}}
1240
1241	+	@SuppressWarnings("FutureReturnValueIgnored")
1242		public void testRunAsync_rejectingExecutor() {
1243		CountingRejectingExecutor e = new CountingRejectingExecutor();
1244		try {
#	Line 1289 | Line 1285 | public class CompletableFutureTest exten
1285		r.assertInvoked();
1286		}}
1287
1288	+	@SuppressWarnings("FutureReturnValueIgnored")
1289		public void testSupplyAsync_rejectingExecutor() {
1290		CountingRejectingExecutor e = new CountingRejectingExecutor();
1291		try {
#	Line 2563 | Line 2560 | public class CompletableFutureTest exten
2560
2561		// unspecified behavior - both source completions available
2562		try {
2563	<	assertEquals(null, h0.join());
2563	>	assertNull(h0.join());
2564		rs[0].assertValue(v1);
2565		} catch (CompletionException ok) {
2566		checkCompletedWithWrappedException(h0, ex);
2567		rs[0].assertNotInvoked();
2568		}
2569		try {
2570	<	assertEquals(null, h1.join());
2570	>	assertNull(h1.join());
2571		rs[1].assertValue(v1);
2572		} catch (CompletionException ok) {
2573		checkCompletedWithWrappedException(h1, ex);
2574		rs[1].assertNotInvoked();
2575		}
2576		try {
2577	<	assertEquals(null, h2.join());
2577	>	assertNull(h2.join());
2578		rs[2].assertValue(v1);
2579		} catch (CompletionException ok) {
2580		checkCompletedWithWrappedException(h2, ex);
2581		rs[2].assertNotInvoked();
2582		}
2583		try {
2584	<	assertEquals(null, h3.join());
2584	>	assertNull(h3.join());
2585		rs[3].assertValue(v1);
2586		} catch (CompletionException ok) {
2587		checkCompletedWithWrappedException(h3, ex);
#	Line 2823 | Line 2820 | public class CompletableFutureTest exten
2820
2821		// unspecified behavior - both source completions available
2822		try {
2823	<	assertEquals(null, h0.join());
2823	>	assertNull(h0.join());
2824		rs[0].assertInvoked();
2825		} catch (CompletionException ok) {
2826		checkCompletedWithWrappedException(h0, ex);
2827		rs[0].assertNotInvoked();
2828		}
2829		try {
2830	<	assertEquals(null, h1.join());
2830	>	assertNull(h1.join());
2831		rs[1].assertInvoked();
2832		} catch (CompletionException ok) {
2833		checkCompletedWithWrappedException(h1, ex);
2834		rs[1].assertNotInvoked();
2835		}
2836		try {
2837	<	assertEquals(null, h2.join());
2837	>	assertNull(h2.join());
2838		rs[2].assertInvoked();
2839		} catch (CompletionException ok) {
2840		checkCompletedWithWrappedException(h2, ex);
2841		rs[2].assertNotInvoked();
2842		}
2843		try {
2844	<	assertEquals(null, h3.join());
2844	>	assertNull(h3.join());
2845		rs[3].assertInvoked();
2846		} catch (CompletionException ok) {
2847		checkCompletedWithWrappedException(h3, ex);
#	Line 3239 | Line 3236 | public class CompletableFutureTest exten
3236		/**
3237		* Completion methods throw NullPointerException with null arguments
3238		*/
3239	+	@SuppressWarnings("FutureReturnValueIgnored")
3240		public void testNPE() {
3241		CompletableFuture<Integer> f = new CompletableFuture<>();
3242		CompletableFuture<Integer> g = new CompletableFuture<>();
#	Line 3258 | Line 3256 | public class CompletableFutureTest exten
3256
3257		() -> f.thenApply(null),
3258		() -> f.thenApplyAsync(null),
3259	<	() -> f.thenApplyAsync((x) -> x, null),
3259	>	() -> f.thenApplyAsync(x -> x, null),
3260		() -> f.thenApplyAsync(null, exec),
3261
3262		() -> f.thenAccept(null),
3263		() -> f.thenAcceptAsync(null),
3264	<	() -> f.thenAcceptAsync((x) -> {} , null),
3264	>	() -> f.thenAcceptAsync(x -> {} , null),
3265		() -> f.thenAcceptAsync(null, exec),
3266
3267		() -> f.thenRun(null),
#	Line 3298 | Line 3296 | public class CompletableFutureTest exten
3296		() -> f.applyToEither(g, null),
3297		() -> f.applyToEitherAsync(g, null),
3298		() -> f.applyToEitherAsync(g, null, exec),
3299	<	() -> f.applyToEither(nullFuture, (x) -> x),
3300	<	() -> f.applyToEitherAsync(nullFuture, (x) -> x),
3301	<	() -> f.applyToEitherAsync(nullFuture, (x) -> x, exec),
3302	<	() -> f.applyToEitherAsync(g, (x) -> x, null),
3299	>	() -> f.applyToEither(nullFuture, x -> x),
3300	>	() -> f.applyToEitherAsync(nullFuture, x -> x),
3301	>	() -> f.applyToEitherAsync(nullFuture, x -> x, exec),
3302	>	() -> f.applyToEitherAsync(g, x -> x, null),
3303
3304		() -> f.acceptEither(g, null),
3305		() -> f.acceptEitherAsync(g, null),
3306		() -> f.acceptEitherAsync(g, null, exec),
3307	<	() -> f.acceptEither(nullFuture, (x) -> {}),
3308	<	() -> f.acceptEitherAsync(nullFuture, (x) -> {}),
3309	<	() -> f.acceptEitherAsync(nullFuture, (x) -> {}, exec),
3310	<	() -> f.acceptEitherAsync(g, (x) -> {}, null),
3307	>	() -> f.acceptEither(nullFuture, x -> {}),
3308	>	() -> f.acceptEitherAsync(nullFuture, x -> {}),
3309	>	() -> f.acceptEitherAsync(nullFuture, x -> {}, exec),
3310	>	() -> f.acceptEitherAsync(g, x -> {}, null),
3311
3312		() -> f.runAfterEither(g, null),
3313		() -> f.runAfterEitherAsync(g, null),
#	Line 3375 | Line 3373 | public class CompletableFutureTest exten
3373		for (CompletableFuture<Integer> src : srcs) {
3374		List<CompletableFuture<?>> fs = new ArrayList<>();
3375		fs.add(src.thenRunAsync(() -> {}, e));
3376	<	fs.add(src.thenAcceptAsync((z) -> {}, e));
3377	<	fs.add(src.thenApplyAsync((z) -> z, e));
3376	>	fs.add(src.thenAcceptAsync(z -> {}, e));
3377	>	fs.add(src.thenApplyAsync(z -> z, e));
3378
3379		fs.add(src.thenCombineAsync(src, (x, y) -> x, e));
3380		fs.add(src.thenAcceptBothAsync(src, (x, y) -> {}, e));
3381		fs.add(src.runAfterBothAsync(src, () -> {}, e));
3382
3383	<	fs.add(src.applyToEitherAsync(src, (z) -> z, e));
3384	<	fs.add(src.acceptEitherAsync(src, (z) -> {}, e));
3383	>	fs.add(src.applyToEitherAsync(src, z -> z, e));
3384	>	fs.add(src.acceptEitherAsync(src, z -> {}, e));
3385		fs.add(src.runAfterEitherAsync(src, () -> {}, e));
3386
3387	<	fs.add(src.thenComposeAsync((z) -> null, e));
3387	>	fs.add(src.thenComposeAsync(z -> null, e));
3388		fs.add(src.whenCompleteAsync((z, t) -> {}, e));
3389		fs.add(src.handleAsync((z, t) -> null, e));
3390
#	Line 3419 | Line 3417 | public class CompletableFutureTest exten
3417		{
3418		List<CompletableFuture<?>> fs = new ArrayList<>();
3419
3420	<	fs.add(complete.applyToEitherAsync(incomplete, (z) -> z, e));
3421	<	fs.add(incomplete.applyToEitherAsync(complete, (z) -> z, e));
3420	>	fs.add(complete.applyToEitherAsync(incomplete, z -> z, e));
3421	>	fs.add(incomplete.applyToEitherAsync(complete, z -> z, e));
3422
3423	<	fs.add(complete.acceptEitherAsync(incomplete, (z) -> {}, e));
3424	<	fs.add(incomplete.acceptEitherAsync(complete, (z) -> {}, e));
3423	>	fs.add(complete.acceptEitherAsync(incomplete, z -> {}, e));
3424	>	fs.add(incomplete.acceptEitherAsync(complete, z -> {}, e));
3425
3426		fs.add(complete.runAfterEitherAsync(incomplete, () -> {}, e));
3427		fs.add(incomplete.runAfterEitherAsync(complete, () -> {}, e));
#	Line 3462 | Line 3460 | public class CompletableFutureTest exten
3460
3461		List<CompletableFuture<?>> fs = new ArrayList<>();
3462		fs.add(incomplete.thenRunAsync(() -> {}, e));
3463	<	fs.add(incomplete.thenAcceptAsync((z) -> {}, e));
3464	<	fs.add(incomplete.thenApplyAsync((z) -> z, e));
3463	>	fs.add(incomplete.thenAcceptAsync(z -> {}, e));
3464	>	fs.add(incomplete.thenApplyAsync(z -> z, e));
3465
3466		fs.add(incomplete.thenCombineAsync(incomplete, (x, y) -> x, e));
3467		fs.add(incomplete.thenAcceptBothAsync(incomplete, (x, y) -> {}, e));
3468		fs.add(incomplete.runAfterBothAsync(incomplete, () -> {}, e));
3469
3470	<	fs.add(incomplete.applyToEitherAsync(incomplete, (z) -> z, e));
3471	<	fs.add(incomplete.acceptEitherAsync(incomplete, (z) -> {}, e));
3470	>	fs.add(incomplete.applyToEitherAsync(incomplete, z -> z, e));
3471	>	fs.add(incomplete.acceptEitherAsync(incomplete, z -> {}, e));
3472		fs.add(incomplete.runAfterEitherAsync(incomplete, () -> {}, e));
3473
3474	<	fs.add(incomplete.thenComposeAsync((z) -> null, e));
3474	>	fs.add(incomplete.thenComposeAsync(z -> null, e));
3475		fs.add(incomplete.whenCompleteAsync((z, t) -> {}, e));
3476		fs.add(incomplete.handleAsync((z, t) -> null, e));
3477
#	Line 3533 | Line 3531 | public class CompletableFutureTest exten
3531		*/
3532		public void testCompletedStage() {
3533		AtomicInteger x = new AtomicInteger(0);
3534	<	AtomicReference<Throwable> r = new AtomicReference<Throwable>();
3534	>	AtomicReference<Throwable> r = new AtomicReference<>();
3535		CompletionStage<Integer> f = CompletableFuture.completedStage(1);
3536		f.whenComplete((v, e) -> {if (e != null) r.set(e); else x.set(v);});
3537		assertEquals(x.get(), 1);
#	Line 3578 | Line 3576 | public class CompletableFutureTest exten
3576		* copy returns a CompletableFuture that is completed normally,
3577		* with the same value, when source is.
3578		*/
3579	<	public void testCopy() {
3579	>	public void testCopy_normalCompletion() {
3580	>	for (boolean createIncomplete : new boolean[] { true, false })
3581	>	for (Integer v1 : new Integer[] { 1, null })
3582	>	{
3583		CompletableFuture<Integer> f = new CompletableFuture<>();
3584	+	if (!createIncomplete) assertTrue(f.complete(v1));
3585		CompletableFuture<Integer> g = f.copy();
3586	<	checkIncomplete(f);
3587	<	checkIncomplete(g);
3588	<	f.complete(1);
3589	<	checkCompletedNormally(f, 1);
3590	<	checkCompletedNormally(g, 1);
3591	<	}
3586	>	if (createIncomplete) {
3587	>	checkIncomplete(f);
3588	>	checkIncomplete(g);
3589	>	assertTrue(f.complete(v1));
3590	>	}
3591	>	checkCompletedNormally(f, v1);
3592	>	checkCompletedNormally(g, v1);
3593	>	}}
3594
3595		/**
3596		* copy returns a CompletableFuture that is completed exceptionally
3597		* when source is.
3598		*/
3599	<	public void testCopy2() {
3599	>	public void testCopy_exceptionalCompletion() {
3600	>	for (boolean createIncomplete : new boolean[] { true, false })
3601	>	{
3602	>	CFException ex = new CFException();
3603		CompletableFuture<Integer> f = new CompletableFuture<>();
3604	+	if (!createIncomplete) f.completeExceptionally(ex);
3605		CompletableFuture<Integer> g = f.copy();
3606	<	checkIncomplete(f);
3607	<	checkIncomplete(g);
3608	<	CFException ex = new CFException();
3609	<	f.completeExceptionally(ex);
3606	>	if (createIncomplete) {
3607	>	checkIncomplete(f);
3608	>	checkIncomplete(g);
3609	>	f.completeExceptionally(ex);
3610	>	}
3611		checkCompletedExceptionally(f, ex);
3612		checkCompletedWithWrappedException(g, ex);
3613	+	}}
3614	+
3615	+	/**
3616	+	* Completion of a copy does not complete its source.
3617	+	*/
3618	+	public void testCopy_oneWayPropagation() {
3619	+	CompletableFuture<Integer> f = new CompletableFuture<>();
3620	+	assertTrue(f.copy().complete(1));
3621	+	assertTrue(f.copy().complete(null));
3622	+	assertTrue(f.copy().cancel(true));
3623	+	assertTrue(f.copy().cancel(false));
3624	+	assertTrue(f.copy().completeExceptionally(new CFException()));
3625	+	checkIncomplete(f);
3626		}
3627
3628		/**
#	Line 3611 | Line 3633 | public class CompletableFutureTest exten
3633		CompletableFuture<Integer> f = new CompletableFuture<>();
3634		CompletionStage<Integer> g = f.minimalCompletionStage();
3635		AtomicInteger x = new AtomicInteger(0);
3636	<	AtomicReference<Throwable> r = new AtomicReference<Throwable>();
3636	>	AtomicReference<Throwable> r = new AtomicReference<>();
3637		checkIncomplete(f);
3638		g.whenComplete((v, e) -> {if (e != null) r.set(e); else x.set(v);});
3639		f.complete(1);
#	Line 3628 | Line 3650 | public class CompletableFutureTest exten
3650		CompletableFuture<Integer> f = new CompletableFuture<>();
3651		CompletionStage<Integer> g = f.minimalCompletionStage();
3652		AtomicInteger x = new AtomicInteger(0);
3653	<	AtomicReference<Throwable> r = new AtomicReference<Throwable>();
3653	>	AtomicReference<Throwable> r = new AtomicReference<>();
3654		g.whenComplete((v, e) -> {if (e != null) r.set(e); else x.set(v);});
3655		checkIncomplete(f);
3656		CFException ex = new CFException();
#	Line 3646 | Line 3668 | public class CompletableFutureTest exten
3668		CFException ex = new CFException();
3669		CompletionStage<Integer> f = CompletableFuture.failedStage(ex);
3670		AtomicInteger x = new AtomicInteger(0);
3671	<	AtomicReference<Throwable> r = new AtomicReference<Throwable>();
3671	>	AtomicReference<Throwable> r = new AtomicReference<>();
3672		f.whenComplete((v, e) -> {if (e != null) r.set(e); else x.set(v);});
3673		assertEquals(x.get(), 0);
3674		assertEquals(r.get(), ex);
#	Line 3670 | Line 3692 | public class CompletableFutureTest exten
3692		public void testCompleteAsync2() {
3693		CompletableFuture<Integer> f = new CompletableFuture<>();
3694		CFException ex = new CFException();
3695	<	f.completeAsync(() -> {if (true) throw ex; return 1;});
3695	>	f.completeAsync(() -> { throw ex; });
3696		try {
3697		f.join();
3698		shouldThrow();
#	Line 3700 | Line 3722 | public class CompletableFutureTest exten
3722		CompletableFuture<Integer> f = new CompletableFuture<>();
3723		CFException ex = new CFException();
3724		ThreadExecutor executor = new ThreadExecutor();
3725	<	f.completeAsync(() -> {if (true) throw ex; return 1;}, executor);
3725	>	f.completeAsync(() -> { throw ex; }, executor);
3726		try {
3727		f.join();
3728		shouldThrow();
#	Line 3859 | Line 3881 | public class CompletableFutureTest exten
3881		List<Function<CompletableFuture<Integer>, CompletableFuture<?>>> funs
3882		= new ArrayList<>();
3883
3884	<	funs.add((y) -> m.thenRun(y, noopRunnable));
3885	<	funs.add((y) -> m.thenAccept(y, noopConsumer));
3886	<	funs.add((y) -> m.thenApply(y, incFunction));
3887	<
3888	<	funs.add((y) -> m.runAfterEither(y, incomplete, noopRunnable));
3889	<	funs.add((y) -> m.acceptEither(y, incomplete, noopConsumer));
3890	<	funs.add((y) -> m.applyToEither(y, incomplete, incFunction));
3891	<
3892	<	funs.add((y) -> m.runAfterBoth(y, v42, noopRunnable));
3893	<	funs.add((y) -> m.runAfterBoth(v42, y, noopRunnable));
3894	<	funs.add((y) -> m.thenAcceptBoth(y, v42, new SubtractAction(m)));
3895	<	funs.add((y) -> m.thenAcceptBoth(v42, y, new SubtractAction(m)));
3896	<	funs.add((y) -> m.thenCombine(y, v42, new SubtractFunction(m)));
3897	<	funs.add((y) -> m.thenCombine(v42, y, new SubtractFunction(m)));
3898	<
3899	<	funs.add((y) -> m.whenComplete(y, (Integer r, Throwable t) -> {}));
3900	<
3901	<	funs.add((y) -> m.thenCompose(y, new CompletableFutureInc(m)));
3902	<
3903	<	funs.add((y) -> CompletableFuture.allOf(y));
3904	<	funs.add((y) -> CompletableFuture.allOf(y, v42));
3905	<	funs.add((y) -> CompletableFuture.allOf(v42, y));
3906	<	funs.add((y) -> CompletableFuture.anyOf(y));
3907	<	funs.add((y) -> CompletableFuture.anyOf(y, incomplete));
3908	<	funs.add((y) -> CompletableFuture.anyOf(incomplete, y));
3884	>	funs.add(y -> m.thenRun(y, noopRunnable));
3885	>	funs.add(y -> m.thenAccept(y, noopConsumer));
3886	>	funs.add(y -> m.thenApply(y, incFunction));
3887	>
3888	>	funs.add(y -> m.runAfterEither(y, incomplete, noopRunnable));
3889	>	funs.add(y -> m.acceptEither(y, incomplete, noopConsumer));
3890	>	funs.add(y -> m.applyToEither(y, incomplete, incFunction));
3891	>
3892	>	funs.add(y -> m.runAfterBoth(y, v42, noopRunnable));
3893	>	funs.add(y -> m.runAfterBoth(v42, y, noopRunnable));
3894	>	funs.add(y -> m.thenAcceptBoth(y, v42, new SubtractAction(m)));
3895	>	funs.add(y -> m.thenAcceptBoth(v42, y, new SubtractAction(m)));
3896	>	funs.add(y -> m.thenCombine(y, v42, new SubtractFunction(m)));
3897	>	funs.add(y -> m.thenCombine(v42, y, new SubtractFunction(m)));
3898	>
3899	>	funs.add(y -> m.whenComplete(y, (Integer r, Throwable t) -> {}));
3900	>
3901	>	funs.add(y -> m.thenCompose(y, new CompletableFutureInc(m)));
3902	>
3903	>	funs.add(y -> CompletableFuture.allOf(y));
3904	>	funs.add(y -> CompletableFuture.allOf(y, v42));
3905	>	funs.add(y -> CompletableFuture.allOf(v42, y));
3906	>	funs.add(y -> CompletableFuture.anyOf(y));
3907	>	funs.add(y -> CompletableFuture.anyOf(y, incomplete));
3908	>	funs.add(y -> CompletableFuture.anyOf(incomplete, y));
3909
3910		for (Function<CompletableFuture<Integer>, CompletableFuture<?>>
3911		fun : funs) {
#	Line 3940 | Line 3962 | public class CompletableFutureTest exten
3962		public void testMinimalCompletionStage_minimality() {
3963		if (!testImplementationDetails) return;
3964		Function<Method, String> toSignature =
3965	<	(method) -> method.getName() + Arrays.toString(method.getParameterTypes());
3965	>	method -> method.getName() + Arrays.toString(method.getParameterTypes());
3966		Predicate<Method> isNotStatic =
3967	<	(method) -> (method.getModifiers() & Modifier.STATIC) == 0;
3967	>	method -> (method.getModifiers() & Modifier.STATIC) == 0;
3968		List<Method> minimalMethods =
3969		Stream.of(Object.class, CompletionStage.class)
3970	<	.flatMap((klazz) -> Stream.of(klazz.getMethods()))
3970	>	.flatMap(klazz -> Stream.of(klazz.getMethods()))
3971		.filter(isNotStatic)
3972		.collect(Collectors.toList());
3973		// Methods from CompletableFuture permitted NOT to throw UOE
#	Line 3961 | Line 3983 | public class CompletableFutureTest exten
3983		.collect(Collectors.toSet());
3984		List<Method> allMethods = Stream.of(CompletableFuture.class.getMethods())
3985		.filter(isNotStatic)
3986	<	.filter((method) -> !permittedMethodSignatures.contains(toSignature.apply(method)))
3986	>	.filter(method -> !permittedMethodSignatures.contains(toSignature.apply(method)))
3987		.collect(Collectors.toList());
3988
3989		List<CompletionStage<Integer>> stages = new ArrayList<>();
3990	<	stages.add(new CompletableFuture<Integer>().minimalCompletionStage());
3990	>	CompletionStage<Integer> min =
3991	>	new CompletableFuture<Integer>().minimalCompletionStage();
3992	>	stages.add(min);
3993	>	stages.add(min.thenApply(x -> x));
3994		stages.add(CompletableFuture.completedStage(1));
3995		stages.add(CompletableFuture.failedStage(new CFException()));
3996
#	Line 4001 | Line 4026 | public class CompletableFutureTest exten
4026		throw new Error("Methods did not throw UOE: " + bugs);
4027		}
4028
4029	+	/**
4030	+	* minimalStage.toCompletableFuture() returns a CompletableFuture that
4031	+	* is completed normally, with the same value, when source is.
4032	+	*/
4033	+	public void testMinimalCompletionStage_toCompletableFuture_normalCompletion() {
4034	+	for (boolean createIncomplete : new boolean[] { true, false })
4035	+	for (Integer v1 : new Integer[] { 1, null })
4036	+	{
4037	+	CompletableFuture<Integer> f = new CompletableFuture<>();
4038	+	CompletionStage<Integer> minimal = f.minimalCompletionStage();
4039	+	if (!createIncomplete) assertTrue(f.complete(v1));
4040	+	CompletableFuture<Integer> g = minimal.toCompletableFuture();
4041	+	if (createIncomplete) {
4042	+	checkIncomplete(f);
4043	+	checkIncomplete(g);
4044	+	assertTrue(f.complete(v1));
4045	+	}
4046	+	checkCompletedNormally(f, v1);
4047	+	checkCompletedNormally(g, v1);
4048	+	}}
4049	+
4050	+	/**
4051	+	* minimalStage.toCompletableFuture() returns a CompletableFuture that
4052	+	* is completed exceptionally when source is.
4053	+	*/
4054	+	public void testMinimalCompletionStage_toCompletableFuture_exceptionalCompletion() {
4055	+	for (boolean createIncomplete : new boolean[] { true, false })
4056	+	{
4057	+	CFException ex = new CFException();
4058	+	CompletableFuture<Integer> f = new CompletableFuture<>();
4059	+	CompletionStage<Integer> minimal = f.minimalCompletionStage();
4060	+	if (!createIncomplete) f.completeExceptionally(ex);
4061	+	CompletableFuture<Integer> g = minimal.toCompletableFuture();
4062	+	if (createIncomplete) {
4063	+	checkIncomplete(f);
4064	+	checkIncomplete(g);
4065	+	f.completeExceptionally(ex);
4066	+	}
4067	+	checkCompletedExceptionally(f, ex);
4068	+	checkCompletedWithWrappedException(g, ex);
4069	+	}}
4070	+
4071	+	/**
4072	+	* minimalStage.toCompletableFuture() gives mutable CompletableFuture
4073	+	*/
4074	+	public void testMinimalCompletionStage_toCompletableFuture_mutable() {
4075	+	for (Integer v1 : new Integer[] { 1, null })
4076	+	{
4077	+	CompletableFuture<Integer> f = new CompletableFuture<>();
4078	+	CompletionStage minimal = f.minimalCompletionStage();
4079	+	CompletableFuture<Integer> g = minimal.toCompletableFuture();
4080	+	assertTrue(g.complete(v1));
4081	+	checkCompletedNormally(g, v1);
4082	+	checkIncomplete(f);
4083	+	checkIncomplete(minimal.toCompletableFuture());
4084	+	}}
4085	+
4086	+	/**
4087	+	* minimalStage.toCompletableFuture().join() awaits completion
4088	+	*/
4089	+	public void testMinimalCompletionStage_toCompletableFuture_join() throws Exception {
4090	+	for (boolean createIncomplete : new boolean[] { true, false })
4091	+	for (Integer v1 : new Integer[] { 1, null })
4092	+	{
4093	+	CompletableFuture<Integer> f = new CompletableFuture<>();
4094	+	if (!createIncomplete) assertTrue(f.complete(v1));
4095	+	CompletionStage<Integer> minimal = f.minimalCompletionStage();
4096	+	if (createIncomplete) assertTrue(f.complete(v1));
4097	+	assertEquals(v1, minimal.toCompletableFuture().join());
4098	+	assertEquals(v1, minimal.toCompletableFuture().get());
4099	+	checkCompletedNormally(minimal.toCompletableFuture(), v1);
4100	+	}}
4101	+
4102	+	/**
4103	+	* Completion of a toCompletableFuture copy of a minimal stage
4104	+	* does not complete its source.
4105	+	*/
4106	+	public void testMinimalCompletionStage_toCompletableFuture_oneWayPropagation() {
4107	+	CompletableFuture<Integer> f = new CompletableFuture<>();
4108	+	CompletionStage<Integer> g = f.minimalCompletionStage();
4109	+	assertTrue(g.toCompletableFuture().complete(1));
4110	+	assertTrue(g.toCompletableFuture().complete(null));
4111	+	assertTrue(g.toCompletableFuture().cancel(true));
4112	+	assertTrue(g.toCompletableFuture().cancel(false));
4113	+	assertTrue(g.toCompletableFuture().completeExceptionally(new CFException()));
4114	+	checkIncomplete(g.toCompletableFuture());
4115	+	f.complete(1);
4116	+	checkCompletedNormally(g.toCompletableFuture(), 1);
4117	+	}
4118	+
4119	+	/** Demo utility method for external reliable toCompletableFuture */
4120	+	static <T> CompletableFuture<T> toCompletableFuture(CompletionStage<T> stage) {
4121	+	CompletableFuture<T> f = new CompletableFuture<>();
4122	+	stage.handle((T t, Throwable ex) -> {
4123	+	if (ex != null) f.completeExceptionally(ex);
4124	+	else f.complete(t);
4125	+	return null;
4126	+	});
4127	+	return f;
4128	+	}
4129	+
4130	+	/** Demo utility method to join a CompletionStage */
4131	+	static <T> T join(CompletionStage<T> stage) {
4132	+	return toCompletableFuture(stage).join();
4133	+	}
4134	+
4135	+	/**
4136	+	* Joining a minimal stage "by hand" works
4137	+	*/
4138	+	public void testMinimalCompletionStage_join_by_hand() {
4139	+	for (boolean createIncomplete : new boolean[] { true, false })
4140	+	for (Integer v1 : new Integer[] { 1, null })
4141	+	{
4142	+	CompletableFuture<Integer> f = new CompletableFuture<>();
4143	+	CompletionStage<Integer> minimal = f.minimalCompletionStage();
4144	+	CompletableFuture<Integer> g = new CompletableFuture<>();
4145	+	if (!createIncomplete) assertTrue(f.complete(v1));
4146	+	minimal.thenAccept(x -> g.complete(x));
4147	+	if (createIncomplete) assertTrue(f.complete(v1));
4148	+	g.join();
4149	+	checkCompletedNormally(g, v1);
4150	+	checkCompletedNormally(f, v1);
4151	+	assertEquals(v1, join(minimal));
4152	+	}}
4153	+
4154		static class Monad {
4155		static class ZeroException extends RuntimeException {
4156		public ZeroException() { super("monadic zero"); }
#	Line 4017 | Line 4167 | public class CompletableFutureTest exten
4167		static <T,U,V> Function<T, CompletableFuture<V>> compose
4168		(Function<T, CompletableFuture<U>> f,
4169		Function<U, CompletableFuture<V>> g) {
4170	<	return (x) -> f.apply(x).thenCompose(g);
4170	>	return x -> f.apply(x).thenCompose(g);
4171		}
4172
4173		static void assertZero(CompletableFuture<?> f) {
#	Line 4097 | Line 4247 | public class CompletableFutureTest exten
4247
4248		// Some mutually non-commutative functions
4249		Function<Long, CompletableFuture<Long>> triple
4250	<	= (x) -> Monad.unit(3 * x);
4250	>	= x -> Monad.unit(3 * x);
4251		Function<Long, CompletableFuture<Long>> inc
4252	<	= (x) -> Monad.unit(x + 1);
4252	>	= x -> Monad.unit(x + 1);
4253
4254		// unit is a right identity: m >>= unit === m
4255		Monad.assertFutureEquals(inc.apply(5L).thenCompose(unit),
#	Line 4111 | Line 4261 | public class CompletableFutureTest exten
4261		// associativity: (m >>= f) >>= g === m >>= ( \x -> (f x >>= g) )
4262		Monad.assertFutureEquals(
4263		unit.apply(5L).thenCompose(inc).thenCompose(triple),
4264	<	unit.apply(5L).thenCompose((x) -> inc.apply(x).thenCompose(triple)));
4264	>	unit.apply(5L).thenCompose(x -> inc.apply(x).thenCompose(triple)));
4265
4266		// The case for CompletableFuture as an additive monad is weaker...
4267
#	Line 4121 | Line 4271 | public class CompletableFutureTest exten
4271		// left zero: zero >>= f === zero
4272		Monad.assertZero(zero.thenCompose(inc));
4273		// right zero: f >>= (\x -> zero) === zero
4274	<	Monad.assertZero(inc.apply(5L).thenCompose((x) -> zero));
4274	>	Monad.assertZero(inc.apply(5L).thenCompose(x -> zero));
4275
4276		// f plus zero === f
4277		Monad.assertFutureEquals(Monad.unit(5L),
#	Line 4148 | Line 4298 | public class CompletableFutureTest exten
4298		}
4299
4300		/** Test long recursive chains of CompletableFutures with cascading completions */
4301	+	@SuppressWarnings("FutureReturnValueIgnored")
4302		public void testRecursiveChains() throws Throwable {
4303		for (ExecutionMode m : ExecutionMode.values())
4304		for (boolean addDeadEnds : new boolean[] { true, false })
#	Line 4172 | Line 4323 | public class CompletableFutureTest exten
4323		* A single CompletableFuture with many dependents.
4324		* A demo of scalability - runtime is O(n).
4325		*/
4326	+	@SuppressWarnings("FutureReturnValueIgnored")
4327		public void testManyDependents() throws Throwable {
4328		final int n = expensiveTests ? 1_000_000 : 10;
4329		final CompletableFuture<Void> head = new CompletableFuture<>();
#	Line 4179 | Line 4331 | public class CompletableFutureTest exten
4331		final AtomicInteger count = new AtomicInteger(0);
4332		for (int i = 0; i < n; i++) {
4333		head.thenRun(() -> count.getAndIncrement());
4334	<	head.thenAccept((x) -> count.getAndIncrement());
4335	<	head.thenApply((x) -> count.getAndIncrement());
4334	>	head.thenAccept(x -> count.getAndIncrement());
4335	>	head.thenApply(x -> count.getAndIncrement());
4336
4337		head.runAfterBoth(complete, () -> count.getAndIncrement());
4338		head.thenAcceptBoth(complete, (x, y) -> count.getAndIncrement());
#	Line 4190 | Line 4342 | public class CompletableFutureTest exten
4342		complete.thenCombine(head, (x, y) -> count.getAndIncrement());
4343
4344		head.runAfterEither(new CompletableFuture<Void>(), () -> count.getAndIncrement());
4345	<	head.acceptEither(new CompletableFuture<Void>(), (x) -> count.getAndIncrement());
4346	<	head.applyToEither(new CompletableFuture<Void>(), (x) -> count.getAndIncrement());
4345	>	head.acceptEither(new CompletableFuture<Void>(), x -> count.getAndIncrement());
4346	>	head.applyToEither(new CompletableFuture<Void>(), x -> count.getAndIncrement());
4347		new CompletableFuture<Void>().runAfterEither(head, () -> count.getAndIncrement());
4348	<	new CompletableFuture<Void>().acceptEither(head, (x) -> count.getAndIncrement());
4349	<	new CompletableFuture<Void>().applyToEither(head, (x) -> count.getAndIncrement());
4348	>	new CompletableFuture<Void>().acceptEither(head, x -> count.getAndIncrement());
4349	>	new CompletableFuture<Void>().applyToEither(head, x -> count.getAndIncrement());
4350		}
4351		head.complete(null);
4352		assertEquals(5 * 3 * n, count.get());
4353		}
4354
4355		/** ant -Dvmoptions=-Xmx8m -Djsr166.expensiveTests=true -Djsr166.tckTestClass=CompletableFutureTest tck */
4356	+	@SuppressWarnings("FutureReturnValueIgnored")
4357		public void testCoCompletionGarbageRetention() throws Throwable {
4358		final int n = expensiveTests ? 1_000_000 : 10;
4359		final CompletableFuture<Integer> incomplete = new CompletableFuture<>();
#	Line 4211 | Line 4364 | public class CompletableFutureTest exten
4364		f.complete(null);
4365
4366		f = new CompletableFuture<>();
4367	<	f.acceptEither(incomplete, (x) -> {});
4367	>	f.acceptEither(incomplete, x -> {});
4368		f.complete(null);
4369
4370		f = new CompletableFuture<>();
4371	<	f.applyToEither(incomplete, (x) -> x);
4371	>	f.applyToEither(incomplete, x -> x);
4372		f.complete(null);
4373
4374		f = new CompletableFuture<>();
#	Line 4229 | Line 4382 | public class CompletableFutureTest exten
4382		f.complete(null);
4383
4384		f = new CompletableFuture<>();
4385	<	incomplete.acceptEither(f, (x) -> {});
4385	>	incomplete.acceptEither(f, x -> {});
4386		f.complete(null);
4387
4388		f = new CompletableFuture<>();
4389	<	incomplete.applyToEither(f, (x) -> x);
4389	>	incomplete.applyToEither(f, x -> x);
4390		f.complete(null);
4391
4392		f = new CompletableFuture<>();
#	Line 4243 | Line 4396 | public class CompletableFutureTest exten
4396		}
4397
4398		/**
4399	<	* Checks for garbage retention with anyOf.
4400	<	* Following used to fail with OOME:
4401	<	* ant -Dvmoptions=-Xmx8m -Djsr166.expensiveTests=true -Djsr166.tckTestClass=CompletableFutureTest -Djsr166.methodFilter=testAnyOfGarbageRetention tck
4399	>	* Reproduction recipe for:
4400	>	* 8160402: Garbage retention with CompletableFuture.anyOf
4401	>	* 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
4402		*/
4403		public void testAnyOfGarbageRetention() throws Throwable {
4404		for (Integer v : new Integer[] { 1, null })
#	Line 4276 | Line 4429 | public class CompletableFutureTest exten
4429		assertTrue(CompletableFuture.allOf(fs).cancel(false));
4430		}
4431
4432	+	/**
4433	+	* Checks for garbage retention when a dependent future is
4434	+	* cancelled and garbage-collected.
4435	+	* 8161600: Garbage retention when source CompletableFutures are never completed
4436	+	*
4437	+	* As of 2016-07, fails with OOME:
4438	+	* ant -Dvmoptions=-Xmx8m -Djsr166.expensiveTests=true -Djsr166.tckTestClass=CompletableFutureTest -Djsr166.methodFilter=testCancelledGarbageRetention tck
4439	+	*/
4440	+	public void testCancelledGarbageRetention() throws Throwable {
4441	+	final int n = expensiveTests ? 100_000 : 10;
4442	+	CompletableFuture<Integer> neverCompleted = new CompletableFuture<>();
4443	+	for (int i = 0; i < n; i++)
4444	+	assertTrue(neverCompleted.thenRun(() -> {}).cancel(true));
4445	+	}
4446	+
4447	+	/**
4448	+	* Checks for garbage retention when MinimalStage.toCompletableFuture()
4449	+	* is invoked many times.
4450	+	* 8161600: Garbage retention when source CompletableFutures are never completed
4451	+	*
4452	+	* As of 2016-07, fails with OOME:
4453	+	* ant -Dvmoptions=-Xmx8m -Djsr166.expensiveTests=true -Djsr166.tckTestClass=CompletableFutureTest -Djsr166.methodFilter=testToCompletableFutureGarbageRetention tck
4454	+	*/
4455	+	public void testToCompletableFutureGarbageRetention() throws Throwable {
4456	+	final int n = expensiveTests ? 900_000 : 10;
4457	+	CompletableFuture<Integer> neverCompleted = new CompletableFuture<>();
4458	+	CompletionStage minimal = neverCompleted.minimalCompletionStage();
4459	+	for (int i = 0; i < n; i++)
4460	+	assertTrue(minimal.toCompletableFuture().cancel(true));
4461	+	}
4462	+
4463		//     static <U> U join(CompletionStage<U> stage) {
4464		//         CompletableFuture<U> f = new CompletableFuture<>();
4465		//         stage.whenComplete((v, ex) -> {

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