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Comparing jsr166/src/test/tck/CompletableFutureTest.java (file contents):
Revision 1.172 by jsr166, Thu Sep 15 00:32:45 2016 UTC vs.
Revision 1.207 by jsr166, Sun Sep 23 02:06:28 2018 UTC

#	Line 41 | Line 41 | import java.util.function.Function;
41		import java.util.function.Predicate;
42		import java.util.function.Supplier;
43
44	–	import junit.framework.AssertionFailedError;
44		import junit.framework.Test;
45		import junit.framework.TestSuite;
46
#	Line 59 | Line 58 | public class CompletableFutureTest exten
58		void checkIncomplete(CompletableFuture<?> f) {
59		assertFalse(f.isDone());
60		assertFalse(f.isCancelled());
61	<	assertTrue(f.toString().contains("Not completed"));
61	>	assertTrue(f.toString().matches(".*\\[.*Not completed.*\\]"));
62	>
63	>	Object result = null;
64		try {
65	<	assertNull(f.getNow(null));
65	>	result = f.getNow(null);
66		} catch (Throwable fail) { threadUnexpectedException(fail); }
67	+	assertNull(result);
68	+
69		try {
70	<	f.get(0L, SECONDS);
70	>	f.get(randomExpiredTimeout(), randomTimeUnit());
71		shouldThrow();
72		}
73		catch (TimeoutException success) {}
74		catch (Throwable fail) { threadUnexpectedException(fail); }
75		}
76
77	<	<T> void checkCompletedNormally(CompletableFuture<T> f, T value) {
78	<	checkTimedGet(f, value);
77	>	<T> void checkCompletedNormally(CompletableFuture<T> f, T expectedValue) {
78	>	checkTimedGet(f, expectedValue);
79
80	+	assertEquals(expectedValue, f.join());
81	+	assertEquals(expectedValue, f.getNow(null));
82	+
83	+	T result = null;
84		try {
85	<	assertEquals(value, f.join());
79	<	} catch (Throwable fail) { threadUnexpectedException(fail); }
80	<	try {
81	<	assertEquals(value, f.getNow(null));
82	<	} catch (Throwable fail) { threadUnexpectedException(fail); }
83	<	try {
84	<	assertEquals(value, f.get());
85	>	result = f.get();
86		} catch (Throwable fail) { threadUnexpectedException(fail); }
87	+	assertEquals(expectedValue, result);
88	+
89		assertTrue(f.isDone());
90		assertFalse(f.isCancelled());
91		assertFalse(f.isCompletedExceptionally());
92	<	assertTrue(f.toString().contains("[Completed normally]"));
92	>	assertTrue(f.toString().matches(".*\\[.*Completed normally.*\\]"));
93		}
94
95		/**
96		* Returns the "raw" internal exceptional completion of f,
97		* without any additional wrapping with CompletionException.
98		*/
99	<	<U> Throwable exceptionalCompletion(CompletableFuture<U> f) {
100	<	// handle (and whenComplete) can distinguish between "direct"
101	<	// and "wrapped" exceptional completion
102	<	return f.handle((U u, Throwable t) -> t).join();
99	>	Throwable exceptionalCompletion(CompletableFuture<?> f) {
100	>	// handle (and whenComplete and exceptionally) can distinguish
101	>	// between "direct" and "wrapped" exceptional completion
102	>	return f.handle((u, t) -> t).join();
103		}
104
105		void checkCompletedExceptionally(CompletableFuture<?> f,
#	Line 142 | Line 145 | public class CompletableFutureTest exten
145		assertFalse(f.isCancelled());
146		assertTrue(f.isDone());
147		assertTrue(f.isCompletedExceptionally());
148	<	assertTrue(f.toString().contains("[Completed exceptionally]"));
148	>	assertTrue(f.toString().matches(".*\\[.*Completed exceptionally.*\\]"));
149		}
150
151		void checkCompletedWithWrappedCFException(CompletableFuture<?> f) {
152		checkCompletedExceptionally(f, true,
153	<	(t) -> assertTrue(t instanceof CFException));
153	>	t -> assertTrue(t instanceof CFException));
154		}
155
156		void checkCompletedWithWrappedCancellationException(CompletableFuture<?> f) {
157		checkCompletedExceptionally(f, true,
158	<	(t) -> assertTrue(t instanceof CancellationException));
158	>	t -> assertTrue(t instanceof CancellationException));
159		}
160
161		void checkCompletedWithTimeoutException(CompletableFuture<?> f) {
162		checkCompletedExceptionally(f, false,
163	<	(t) -> assertTrue(t instanceof TimeoutException));
163	>	t -> assertTrue(t instanceof TimeoutException));
164		}
165
166		void checkCompletedWithWrappedException(CompletableFuture<?> f,
167		Throwable ex) {
168	<	checkCompletedExceptionally(f, true, (t) -> assertSame(t, ex));
168	>	checkCompletedExceptionally(f, true, t -> assertSame(t, ex));
169		}
170
171		void checkCompletedExceptionally(CompletableFuture<?> f, Throwable ex) {
172	<	checkCompletedExceptionally(f, false, (t) -> assertSame(t, ex));
172	>	checkCompletedExceptionally(f, false, t -> assertSame(t, ex));
173		}
174
175		void checkCancelled(CompletableFuture<?> f) {
#	Line 197 | Line 200 | public class CompletableFutureTest exten
200		assertTrue(f.isDone());
201		assertTrue(f.isCompletedExceptionally());
202		assertTrue(f.isCancelled());
203	<	assertTrue(f.toString().contains("[Completed exceptionally]"));
203	>	assertTrue(f.toString().matches(".*\\[.*Completed exceptionally.*\\]"));
204		}
205
206		/**
#	Line 296 | Line 299 | public class CompletableFutureTest exten
299		}
300
301		f = new CompletableFuture<>();
302	<	f.completeExceptionally(ex = new CFException());
302	>	f.completeExceptionally(new CFException());
303		f.obtrudeValue(v1);
304		checkCompletedNormally(f, v1);
305		f.obtrudeException(ex = new CFException());
#	Line 333 | Line 336 | public class CompletableFutureTest exten
336		/**
337		* toString indicates current completion state
338		*/
339	<	public void testToString() {
340	<	CompletableFuture<String> f;
341	<
342	<	f = new CompletableFuture<String>();
343	<	assertTrue(f.toString().contains("[Not completed]"));
339	>	public void testToString_incomplete() {
340	>	CompletableFuture<String> f = new CompletableFuture<>();
341	>	assertTrue(f.toString().matches(".*\\[.*Not completed.*\\]"));
342	>	if (testImplementationDetails)
343	>	assertEquals(identityString(f) + "[Not completed]",
344	>	f.toString());
345	>	}
346
347	+	public void testToString_normal() {
348	+	CompletableFuture<String> f = new CompletableFuture<>();
349		assertTrue(f.complete("foo"));
350	<	assertTrue(f.toString().contains("[Completed normally]"));
350	>	assertTrue(f.toString().matches(".*\\[.*Completed normally.*\\]"));
351	>	if (testImplementationDetails)
352	>	assertEquals(identityString(f) + "[Completed normally]",
353	>	f.toString());
354	>	}
355
356	<	f = new CompletableFuture<String>();
356	>	public void testToString_exception() {
357	>	CompletableFuture<String> f = new CompletableFuture<>();
358		assertTrue(f.completeExceptionally(new IndexOutOfBoundsException()));
359	<	assertTrue(f.toString().contains("[Completed exceptionally]"));
359	>	assertTrue(f.toString().matches(".*\\[.*Completed exceptionally.*\\]"));
360	>	if (testImplementationDetails)
361	>	assertTrue(f.toString().startsWith(
362	>	identityString(f) + "[Completed exceptionally: "));
363	>	}
364
365	+	public void testToString_cancelled() {
366		for (boolean mayInterruptIfRunning : new boolean[] { true, false }) {
367	<	f = new CompletableFuture<String>();
367	>	CompletableFuture<String> f = new CompletableFuture<>();
368		assertTrue(f.cancel(mayInterruptIfRunning));
369	<	assertTrue(f.toString().contains("[Completed exceptionally]"));
369	>	assertTrue(f.toString().matches(".*\\[.*Completed exceptionally.*\\]"));
370	>	if (testImplementationDetails)
371	>	assertTrue(f.toString().startsWith(
372	>	identityString(f) + "[Completed exceptionally: "));
373		}
374		}
375
#	Line 531 | Line 551 | public class CompletableFutureTest exten
551		public CompletableFuture<Integer> apply(Integer x) {
552		invoked();
553		value = x;
554	<	CompletableFuture<Integer> f = new CompletableFuture<>();
555	<	assertTrue(f.complete(inc(x)));
556	<	return f;
554	>	return CompletableFuture.completedFuture(inc(x));
555	>	}
556	>	}
557	>
558	>	static class FailingExceptionalCompletableFutureFunction extends CheckedAction
559	>	implements Function<Throwable, CompletableFuture<Integer>>
560	>	{
561	>	final CFException ex;
562	>	FailingExceptionalCompletableFutureFunction(ExecutionMode m) { super(m); ex = new CFException(); }
563	>	public CompletableFuture<Integer> apply(Throwable x) {
564	>	invoked();
565	>	throw ex;
566	>	}
567	>	}
568	>
569	>	static class ExceptionalCompletableFutureFunction extends CheckedAction
570	>	implements Function<Throwable, CompletionStage<Integer>> {
571	>	final Integer value = 3;
572	>	ExceptionalCompletableFutureFunction(ExecutionMode m) { super(m); }
573	>	public CompletionStage<Integer> apply(Throwable x) {
574	>	invoked();
575	>	return CompletableFuture.completedFuture(value);
576		}
577		}
578
#	Line 652 | Line 691 | public class CompletableFutureTest exten
691		Function<? super T,U> a) {
692		return f.applyToEither(g, a);
693		}
694	+	public <T> CompletableFuture<T> exceptionally
695	+	(CompletableFuture<T> f,
696	+	Function<Throwable, ? extends T> fn) {
697	+	return f.exceptionally(fn);
698	+	}
699	+	public <T> CompletableFuture<T> exceptionallyCompose
700	+	(CompletableFuture<T> f, Function<Throwable, ? extends CompletionStage<T>> fn) {
701	+	return f.exceptionallyCompose(fn);
702	+	}
703		},
656	–
704		ASYNC {
705		public void checkExecutionMode() {
706		assertEquals(defaultExecutorIsCommonPool,
#	Line 726 | Line 773 | public class CompletableFutureTest exten
773		Function<? super T,U> a) {
774		return f.applyToEitherAsync(g, a);
775		}
776	+	public <T> CompletableFuture<T> exceptionally
777	+	(CompletableFuture<T> f,
778	+	Function<Throwable, ? extends T> fn) {
779	+	return f.exceptionallyAsync(fn);
780	+	}
781	+
782	+	public <T> CompletableFuture<T> exceptionallyCompose
783	+	(CompletableFuture<T> f, Function<Throwable, ? extends CompletionStage<T>> fn) {
784	+	return f.exceptionallyComposeAsync(fn);
785	+	}
786	+
787		},
788
789		EXECUTOR {
#	Line 799 | Line 857 | public class CompletableFutureTest exten
857		Function<? super T,U> a) {
858		return f.applyToEitherAsync(g, a, new ThreadExecutor());
859		}
860	+	public <T> CompletableFuture<T> exceptionally
861	+	(CompletableFuture<T> f,
862	+	Function<Throwable, ? extends T> fn) {
863	+	return f.exceptionallyAsync(fn, new ThreadExecutor());
864	+	}
865	+	public <T> CompletableFuture<T> exceptionallyCompose
866	+	(CompletableFuture<T> f, Function<Throwable, ? extends CompletionStage<T>> fn) {
867	+	return f.exceptionallyComposeAsync(fn, new ThreadExecutor());
868	+	}
869	+
870		};
871
872		public abstract void checkExecutionMode();
#	Line 841 | Line 909 | public class CompletableFutureTest exten
909		(CompletableFuture<T> f,
910		CompletionStage<? extends T> g,
911		Function<? super T,U> a);
912	+	public abstract <T> CompletableFuture<T> exceptionally
913	+	(CompletableFuture<T> f,
914	+	Function<Throwable, ? extends T> fn);
915	+	public abstract <T> CompletableFuture<T> exceptionallyCompose
916	+	(CompletableFuture<T> f,
917	+	Function<Throwable, ? extends CompletionStage<T>> fn);
918		}
919
920		/**
#	Line 848 | Line 922 | public class CompletableFutureTest exten
922		* normally, and source result is propagated
923		*/
924		public void testExceptionally_normalCompletion() {
925	+	for (ExecutionMode m : ExecutionMode.values())
926		for (boolean createIncomplete : new boolean[] { true, false })
927		for (Integer v1 : new Integer[] { 1, null })
928		{
854	–	final AtomicInteger a = new AtomicInteger(0);
929		final CompletableFuture<Integer> f = new CompletableFuture<>();
930		if (!createIncomplete) assertTrue(f.complete(v1));
931	<	final CompletableFuture<Integer> g = f.exceptionally
932	<	((Throwable t) -> {
859	<	a.getAndIncrement();
931	>	final CompletableFuture<Integer> g = m.exceptionally
932	>	(f, (Throwable t) -> {
933		threadFail("should not be called");
934		return null;            // unreached
935		});
#	Line 864 | Line 937 | public class CompletableFutureTest exten
937
938		checkCompletedNormally(g, v1);
939		checkCompletedNormally(f, v1);
867	–	assertEquals(0, a.get());
940		}}
941
942		/**
#	Line 872 | Line 944 | public class CompletableFutureTest exten
944		* exception
945		*/
946		public void testExceptionally_exceptionalCompletion() {
947	+	for (ExecutionMode m : ExecutionMode.values())
948		for (boolean createIncomplete : new boolean[] { true, false })
949		for (Integer v1 : new Integer[] { 1, null })
950		{
#	Line 879 | Line 952 | public class CompletableFutureTest exten
952		final CFException ex = new CFException();
953		final CompletableFuture<Integer> f = new CompletableFuture<>();
954		if (!createIncomplete) f.completeExceptionally(ex);
955	<	final CompletableFuture<Integer> g = f.exceptionally
956	<	((Throwable t) -> {
957	<	ExecutionMode.SYNC.checkExecutionMode();
955	>	final CompletableFuture<Integer> g = m.exceptionally
956	>	(f, (Throwable t) -> {
957	>	m.checkExecutionMode();
958		threadAssertSame(t, ex);
959		a.getAndIncrement();
960		return v1;
#	Line 897 | Line 970 | public class CompletableFutureTest exten
970		* exceptionally with that exception
971		*/
972		public void testExceptionally_exceptionalCompletionActionFailed() {
973	+	for (ExecutionMode m : ExecutionMode.values())
974		for (boolean createIncomplete : new boolean[] { true, false })
975		{
976		final AtomicInteger a = new AtomicInteger(0);
#	Line 904 | Line 978 | public class CompletableFutureTest exten
978		final CFException ex2 = new CFException();
979		final CompletableFuture<Integer> f = new CompletableFuture<>();
980		if (!createIncomplete) f.completeExceptionally(ex1);
981	<	final CompletableFuture<Integer> g = f.exceptionally
982	<	((Throwable t) -> {
983	<	ExecutionMode.SYNC.checkExecutionMode();
981	>	final CompletableFuture<Integer> g = m.exceptionally
982	>	(f, (Throwable t) -> {
983	>	m.checkExecutionMode();
984		threadAssertSame(t, ex1);
985		a.getAndIncrement();
986		throw ex2;
#	Line 1242 | Line 1316 | public class CompletableFutureTest exten
1316		r.assertInvoked();
1317		}}
1318
1319	+	@SuppressWarnings("FutureReturnValueIgnored")
1320		public void testRunAsync_rejectingExecutor() {
1321		CountingRejectingExecutor e = new CountingRejectingExecutor();
1322		try {
#	Line 1288 | Line 1363 | public class CompletableFutureTest exten
1363		r.assertInvoked();
1364		}}
1365
1366	+	@SuppressWarnings("FutureReturnValueIgnored")
1367		public void testSupplyAsync_rejectingExecutor() {
1368		CountingRejectingExecutor e = new CountingRejectingExecutor();
1369		try {
#	Line 2562 | Line 2638 | public class CompletableFutureTest exten
2638
2639		// unspecified behavior - both source completions available
2640		try {
2641	<	assertEquals(null, h0.join());
2641	>	assertNull(h0.join());
2642		rs[0].assertValue(v1);
2643		} catch (CompletionException ok) {
2644		checkCompletedWithWrappedException(h0, ex);
2645		rs[0].assertNotInvoked();
2646		}
2647		try {
2648	<	assertEquals(null, h1.join());
2648	>	assertNull(h1.join());
2649		rs[1].assertValue(v1);
2650		} catch (CompletionException ok) {
2651		checkCompletedWithWrappedException(h1, ex);
2652		rs[1].assertNotInvoked();
2653		}
2654		try {
2655	<	assertEquals(null, h2.join());
2655	>	assertNull(h2.join());
2656		rs[2].assertValue(v1);
2657		} catch (CompletionException ok) {
2658		checkCompletedWithWrappedException(h2, ex);
2659		rs[2].assertNotInvoked();
2660		}
2661		try {
2662	<	assertEquals(null, h3.join());
2662	>	assertNull(h3.join());
2663		rs[3].assertValue(v1);
2664		} catch (CompletionException ok) {
2665		checkCompletedWithWrappedException(h3, ex);
#	Line 2822 | Line 2898 | public class CompletableFutureTest exten
2898
2899		// unspecified behavior - both source completions available
2900		try {
2901	<	assertEquals(null, h0.join());
2901	>	assertNull(h0.join());
2902		rs[0].assertInvoked();
2903		} catch (CompletionException ok) {
2904		checkCompletedWithWrappedException(h0, ex);
2905		rs[0].assertNotInvoked();
2906		}
2907		try {
2908	<	assertEquals(null, h1.join());
2908	>	assertNull(h1.join());
2909		rs[1].assertInvoked();
2910		} catch (CompletionException ok) {
2911		checkCompletedWithWrappedException(h1, ex);
2912		rs[1].assertNotInvoked();
2913		}
2914		try {
2915	<	assertEquals(null, h2.join());
2915	>	assertNull(h2.join());
2916		rs[2].assertInvoked();
2917		} catch (CompletionException ok) {
2918		checkCompletedWithWrappedException(h2, ex);
2919		rs[2].assertNotInvoked();
2920		}
2921		try {
2922	<	assertEquals(null, h3.join());
2922	>	assertNull(h3.join());
2923		rs[3].assertInvoked();
2924		} catch (CompletionException ok) {
2925		checkCompletedWithWrappedException(h3, ex);
#	Line 3075 | Line 3151 | public class CompletableFutureTest exten
3151		checkCompletedNormally(f, v1);
3152		}}
3153
3154	+	/**
3155	+	* exceptionallyCompose result completes normally after normal
3156	+	* completion of source
3157	+	*/
3158	+	public void testExceptionallyCompose_normalCompletion() {
3159	+	for (ExecutionMode m : ExecutionMode.values())
3160	+	for (boolean createIncomplete : new boolean[] { true, false })
3161	+	for (Integer v1 : new Integer[] { 1, null })
3162	+	{
3163	+	final CompletableFuture<Integer> f = new CompletableFuture<>();
3164	+	final ExceptionalCompletableFutureFunction r =
3165	+	new ExceptionalCompletableFutureFunction(m);
3166	+	if (!createIncomplete) assertTrue(f.complete(v1));
3167	+	final CompletableFuture<Integer> g = m.exceptionallyCompose(f, r);
3168	+	if (createIncomplete) assertTrue(f.complete(v1));
3169	+
3170	+	checkCompletedNormally(f, v1);
3171	+	checkCompletedNormally(g, v1);
3172	+	r.assertNotInvoked();
3173	+	}}
3174	+
3175	+	/**
3176	+	* exceptionallyCompose result completes normally after exceptional
3177	+	* completion of source
3178	+	*/
3179	+	public void testExceptionallyCompose_exceptionalCompletion() {
3180	+	for (ExecutionMode m : ExecutionMode.values())
3181	+	for (boolean createIncomplete : new boolean[] { true, false })
3182	+	{
3183	+	final CFException ex = new CFException();
3184	+	final ExceptionalCompletableFutureFunction r =
3185	+	new ExceptionalCompletableFutureFunction(m);
3186	+	final CompletableFuture<Integer> f = new CompletableFuture<>();
3187	+	if (!createIncomplete) f.completeExceptionally(ex);
3188	+	final CompletableFuture<Integer> g = m.exceptionallyCompose(f, r);
3189	+	if (createIncomplete) f.completeExceptionally(ex);
3190	+
3191	+	checkCompletedExceptionally(f, ex);
3192	+	checkCompletedNormally(g, r.value);
3193	+	r.assertInvoked();
3194	+	}}
3195	+
3196	+	/**
3197	+	* exceptionallyCompose completes exceptionally on exception if action does
3198	+	*/
3199	+	public void testExceptionallyCompose_actionFailed() {
3200	+	for (ExecutionMode m : ExecutionMode.values())
3201	+	for (boolean createIncomplete : new boolean[] { true, false })
3202	+	for (Integer v1 : new Integer[] { 1, null })
3203	+	{
3204	+	final CFException ex = new CFException();
3205	+	final CompletableFuture<Integer> f = new CompletableFuture<>();
3206	+	final FailingExceptionalCompletableFutureFunction r
3207	+	= new FailingExceptionalCompletableFutureFunction(m);
3208	+	if (!createIncomplete) f.completeExceptionally(ex);
3209	+	final CompletableFuture<Integer> g = m.exceptionallyCompose(f, r);
3210	+	if (createIncomplete) f.completeExceptionally(ex);
3211	+
3212	+	checkCompletedExceptionally(f, ex);
3213	+	checkCompletedWithWrappedException(g, r.ex);
3214	+	r.assertInvoked();
3215	+	}}
3216	+
3217	+
3218		// other static methods
3219
3220		/**
#	Line 3238 | Line 3378 | public class CompletableFutureTest exten
3378		/**
3379		* Completion methods throw NullPointerException with null arguments
3380		*/
3381	+	@SuppressWarnings("FutureReturnValueIgnored")
3382		public void testNPE() {
3383		CompletableFuture<Integer> f = new CompletableFuture<>();
3384		CompletableFuture<Integer> g = new CompletableFuture<>();
#	Line 3257 | Line 3398 | public class CompletableFutureTest exten
3398
3399		() -> f.thenApply(null),
3400		() -> f.thenApplyAsync(null),
3401	<	() -> f.thenApplyAsync((x) -> x, null),
3401	>	() -> f.thenApplyAsync(x -> x, null),
3402		() -> f.thenApplyAsync(null, exec),
3403
3404		() -> f.thenAccept(null),
3405		() -> f.thenAcceptAsync(null),
3406	<	() -> f.thenAcceptAsync((x) -> {} , null),
3406	>	() -> f.thenAcceptAsync(x -> {} , null),
3407		() -> f.thenAcceptAsync(null, exec),
3408
3409		() -> f.thenRun(null),
#	Line 3297 | Line 3438 | public class CompletableFutureTest exten
3438		() -> f.applyToEither(g, null),
3439		() -> f.applyToEitherAsync(g, null),
3440		() -> f.applyToEitherAsync(g, null, exec),
3441	<	() -> f.applyToEither(nullFuture, (x) -> x),
3442	<	() -> f.applyToEitherAsync(nullFuture, (x) -> x),
3443	<	() -> f.applyToEitherAsync(nullFuture, (x) -> x, exec),
3444	<	() -> f.applyToEitherAsync(g, (x) -> x, null),
3441	>	() -> f.applyToEither(nullFuture, x -> x),
3442	>	() -> f.applyToEitherAsync(nullFuture, x -> x),
3443	>	() -> f.applyToEitherAsync(nullFuture, x -> x, exec),
3444	>	() -> f.applyToEitherAsync(g, x -> x, null),
3445
3446		() -> f.acceptEither(g, null),
3447		() -> f.acceptEitherAsync(g, null),
3448		() -> f.acceptEitherAsync(g, null, exec),
3449	<	() -> f.acceptEither(nullFuture, (x) -> {}),
3450	<	() -> f.acceptEitherAsync(nullFuture, (x) -> {}),
3451	<	() -> f.acceptEitherAsync(nullFuture, (x) -> {}, exec),
3452	<	() -> f.acceptEitherAsync(g, (x) -> {}, null),
3449	>	() -> f.acceptEither(nullFuture, x -> {}),
3450	>	() -> f.acceptEitherAsync(nullFuture, x -> {}),
3451	>	() -> f.acceptEitherAsync(nullFuture, x -> {}, exec),
3452	>	() -> f.acceptEitherAsync(g, x -> {}, null),
3453
3454		() -> f.runAfterEither(g, null),
3455		() -> f.runAfterEitherAsync(g, null),
#	Line 3374 | Line 3515 | public class CompletableFutureTest exten
3515		for (CompletableFuture<Integer> src : srcs) {
3516		List<CompletableFuture<?>> fs = new ArrayList<>();
3517		fs.add(src.thenRunAsync(() -> {}, e));
3518	<	fs.add(src.thenAcceptAsync((z) -> {}, e));
3519	<	fs.add(src.thenApplyAsync((z) -> z, e));
3518	>	fs.add(src.thenAcceptAsync(z -> {}, e));
3519	>	fs.add(src.thenApplyAsync(z -> z, e));
3520
3521		fs.add(src.thenCombineAsync(src, (x, y) -> x, e));
3522		fs.add(src.thenAcceptBothAsync(src, (x, y) -> {}, e));
3523		fs.add(src.runAfterBothAsync(src, () -> {}, e));
3524
3525	<	fs.add(src.applyToEitherAsync(src, (z) -> z, e));
3526	<	fs.add(src.acceptEitherAsync(src, (z) -> {}, e));
3525	>	fs.add(src.applyToEitherAsync(src, z -> z, e));
3526	>	fs.add(src.acceptEitherAsync(src, z -> {}, e));
3527		fs.add(src.runAfterEitherAsync(src, () -> {}, e));
3528
3529	<	fs.add(src.thenComposeAsync((z) -> null, e));
3529	>	fs.add(src.thenComposeAsync(z -> null, e));
3530		fs.add(src.whenCompleteAsync((z, t) -> {}, e));
3531		fs.add(src.handleAsync((z, t) -> null, e));
3532
#	Line 3418 | Line 3559 | public class CompletableFutureTest exten
3559		{
3560		List<CompletableFuture<?>> fs = new ArrayList<>();
3561
3562	<	fs.add(complete.applyToEitherAsync(incomplete, (z) -> z, e));
3563	<	fs.add(incomplete.applyToEitherAsync(complete, (z) -> z, e));
3562	>	fs.add(complete.applyToEitherAsync(incomplete, z -> z, e));
3563	>	fs.add(incomplete.applyToEitherAsync(complete, z -> z, e));
3564
3565	<	fs.add(complete.acceptEitherAsync(incomplete, (z) -> {}, e));
3566	<	fs.add(incomplete.acceptEitherAsync(complete, (z) -> {}, e));
3565	>	fs.add(complete.acceptEitherAsync(incomplete, z -> {}, e));
3566	>	fs.add(incomplete.acceptEitherAsync(complete, z -> {}, e));
3567
3568		fs.add(complete.runAfterEitherAsync(incomplete, () -> {}, e));
3569		fs.add(incomplete.runAfterEitherAsync(complete, () -> {}, e));
#	Line 3461 | Line 3602 | public class CompletableFutureTest exten
3602
3603		List<CompletableFuture<?>> fs = new ArrayList<>();
3604		fs.add(incomplete.thenRunAsync(() -> {}, e));
3605	<	fs.add(incomplete.thenAcceptAsync((z) -> {}, e));
3606	<	fs.add(incomplete.thenApplyAsync((z) -> z, e));
3605	>	fs.add(incomplete.thenAcceptAsync(z -> {}, e));
3606	>	fs.add(incomplete.thenApplyAsync(z -> z, e));
3607
3608		fs.add(incomplete.thenCombineAsync(incomplete, (x, y) -> x, e));
3609		fs.add(incomplete.thenAcceptBothAsync(incomplete, (x, y) -> {}, e));
3610		fs.add(incomplete.runAfterBothAsync(incomplete, () -> {}, e));
3611
3612	<	fs.add(incomplete.applyToEitherAsync(incomplete, (z) -> z, e));
3613	<	fs.add(incomplete.acceptEitherAsync(incomplete, (z) -> {}, e));
3612	>	fs.add(incomplete.applyToEitherAsync(incomplete, z -> z, e));
3613	>	fs.add(incomplete.acceptEitherAsync(incomplete, z -> {}, e));
3614		fs.add(incomplete.runAfterEitherAsync(incomplete, () -> {}, e));
3615
3616	<	fs.add(incomplete.thenComposeAsync((z) -> null, e));
3616	>	fs.add(incomplete.thenComposeAsync(z -> null, e));
3617		fs.add(incomplete.whenCompleteAsync((z, t) -> {}, e));
3618		fs.add(incomplete.handleAsync((z, t) -> null, e));
3619
#	Line 3532 | Line 3673 | public class CompletableFutureTest exten
3673		*/
3674		public void testCompletedStage() {
3675		AtomicInteger x = new AtomicInteger(0);
3676	<	AtomicReference<Throwable> r = new AtomicReference<Throwable>();
3676	>	AtomicReference<Throwable> r = new AtomicReference<>();
3677		CompletionStage<Integer> f = CompletableFuture.completedStage(1);
3678		f.whenComplete((v, e) -> {if (e != null) r.set(e); else x.set(v);});
3679		assertEquals(x.get(), 1);
#	Line 3577 | Line 3718 | public class CompletableFutureTest exten
3718		* copy returns a CompletableFuture that is completed normally,
3719		* with the same value, when source is.
3720		*/
3721	<	public void testCopy() {
3721	>	public void testCopy_normalCompletion() {
3722	>	for (boolean createIncomplete : new boolean[] { true, false })
3723	>	for (Integer v1 : new Integer[] { 1, null })
3724	>	{
3725		CompletableFuture<Integer> f = new CompletableFuture<>();
3726	+	if (!createIncomplete) assertTrue(f.complete(v1));
3727		CompletableFuture<Integer> g = f.copy();
3728	<	checkIncomplete(f);
3729	<	checkIncomplete(g);
3730	<	f.complete(1);
3731	<	checkCompletedNormally(f, 1);
3732	<	checkCompletedNormally(g, 1);
3733	<	}
3728	>	if (createIncomplete) {
3729	>	checkIncomplete(f);
3730	>	checkIncomplete(g);
3731	>	assertTrue(f.complete(v1));
3732	>	}
3733	>	checkCompletedNormally(f, v1);
3734	>	checkCompletedNormally(g, v1);
3735	>	}}
3736
3737		/**
3738		* copy returns a CompletableFuture that is completed exceptionally
3739		* when source is.
3740		*/
3741	<	public void testCopy2() {
3741	>	public void testCopy_exceptionalCompletion() {
3742	>	for (boolean createIncomplete : new boolean[] { true, false })
3743	>	{
3744	>	CFException ex = new CFException();
3745		CompletableFuture<Integer> f = new CompletableFuture<>();
3746	+	if (!createIncomplete) f.completeExceptionally(ex);
3747		CompletableFuture<Integer> g = f.copy();
3748	<	checkIncomplete(f);
3749	<	checkIncomplete(g);
3750	<	CFException ex = new CFException();
3751	<	f.completeExceptionally(ex);
3748	>	if (createIncomplete) {
3749	>	checkIncomplete(f);
3750	>	checkIncomplete(g);
3751	>	f.completeExceptionally(ex);
3752	>	}
3753		checkCompletedExceptionally(f, ex);
3754		checkCompletedWithWrappedException(g, ex);
3755	+	}}
3756	+
3757	+	/**
3758	+	* Completion of a copy does not complete its source.
3759	+	*/
3760	+	public void testCopy_oneWayPropagation() {
3761	+	CompletableFuture<Integer> f = new CompletableFuture<>();
3762	+	assertTrue(f.copy().complete(1));
3763	+	assertTrue(f.copy().complete(null));
3764	+	assertTrue(f.copy().cancel(true));
3765	+	assertTrue(f.copy().cancel(false));
3766	+	assertTrue(f.copy().completeExceptionally(new CFException()));
3767	+	checkIncomplete(f);
3768		}
3769
3770		/**
#	Line 3610 | Line 3775 | public class CompletableFutureTest exten
3775		CompletableFuture<Integer> f = new CompletableFuture<>();
3776		CompletionStage<Integer> g = f.minimalCompletionStage();
3777		AtomicInteger x = new AtomicInteger(0);
3778	<	AtomicReference<Throwable> r = new AtomicReference<Throwable>();
3778	>	AtomicReference<Throwable> r = new AtomicReference<>();
3779		checkIncomplete(f);
3780		g.whenComplete((v, e) -> {if (e != null) r.set(e); else x.set(v);});
3781		f.complete(1);
#	Line 3627 | Line 3792 | public class CompletableFutureTest exten
3792		CompletableFuture<Integer> f = new CompletableFuture<>();
3793		CompletionStage<Integer> g = f.minimalCompletionStage();
3794		AtomicInteger x = new AtomicInteger(0);
3795	<	AtomicReference<Throwable> r = new AtomicReference<Throwable>();
3795	>	AtomicReference<Throwable> r = new AtomicReference<>();
3796		g.whenComplete((v, e) -> {if (e != null) r.set(e); else x.set(v);});
3797		checkIncomplete(f);
3798		CFException ex = new CFException();
#	Line 3645 | Line 3810 | public class CompletableFutureTest exten
3810		CFException ex = new CFException();
3811		CompletionStage<Integer> f = CompletableFuture.failedStage(ex);
3812		AtomicInteger x = new AtomicInteger(0);
3813	<	AtomicReference<Throwable> r = new AtomicReference<Throwable>();
3813	>	AtomicReference<Throwable> r = new AtomicReference<>();
3814		f.whenComplete((v, e) -> {if (e != null) r.set(e); else x.set(v);});
3815		assertEquals(x.get(), 0);
3816		assertEquals(r.get(), ex);
#	Line 3669 | Line 3834 | public class CompletableFutureTest exten
3834		public void testCompleteAsync2() {
3835		CompletableFuture<Integer> f = new CompletableFuture<>();
3836		CFException ex = new CFException();
3837	<	f.completeAsync(() -> {if (true) throw ex; return 1;});
3837	>	f.completeAsync(() -> { throw ex; });
3838		try {
3839		f.join();
3840		shouldThrow();
#	Line 3699 | Line 3864 | public class CompletableFutureTest exten
3864		CompletableFuture<Integer> f = new CompletableFuture<>();
3865		CFException ex = new CFException();
3866		ThreadExecutor executor = new ThreadExecutor();
3867	<	f.completeAsync(() -> {if (true) throw ex; return 1;}, executor);
3867	>	f.completeAsync(() -> { throw ex; }, executor);
3868		try {
3869		f.join();
3870		shouldThrow();
#	Line 3858 | Line 4023 | public class CompletableFutureTest exten
4023		List<Function<CompletableFuture<Integer>, CompletableFuture<?>>> funs
4024		= new ArrayList<>();
4025
4026	<	funs.add((y) -> m.thenRun(y, noopRunnable));
4027	<	funs.add((y) -> m.thenAccept(y, noopConsumer));
4028	<	funs.add((y) -> m.thenApply(y, incFunction));
4029	<
4030	<	funs.add((y) -> m.runAfterEither(y, incomplete, noopRunnable));
4031	<	funs.add((y) -> m.acceptEither(y, incomplete, noopConsumer));
4032	<	funs.add((y) -> m.applyToEither(y, incomplete, incFunction));
4033	<
4034	<	funs.add((y) -> m.runAfterBoth(y, v42, noopRunnable));
4035	<	funs.add((y) -> m.runAfterBoth(v42, y, noopRunnable));
4036	<	funs.add((y) -> m.thenAcceptBoth(y, v42, new SubtractAction(m)));
4037	<	funs.add((y) -> m.thenAcceptBoth(v42, y, new SubtractAction(m)));
4038	<	funs.add((y) -> m.thenCombine(y, v42, new SubtractFunction(m)));
4039	<	funs.add((y) -> m.thenCombine(v42, y, new SubtractFunction(m)));
4040	<
4041	<	funs.add((y) -> m.whenComplete(y, (Integer r, Throwable t) -> {}));
4042	<
4043	<	funs.add((y) -> m.thenCompose(y, new CompletableFutureInc(m)));
4044	<
4045	<	funs.add((y) -> CompletableFuture.allOf(y));
4046	<	funs.add((y) -> CompletableFuture.allOf(y, v42));
4047	<	funs.add((y) -> CompletableFuture.allOf(v42, y));
4048	<	funs.add((y) -> CompletableFuture.anyOf(y));
4049	<	funs.add((y) -> CompletableFuture.anyOf(y, incomplete));
4050	<	funs.add((y) -> CompletableFuture.anyOf(incomplete, y));
4026	>	funs.add(y -> m.thenRun(y, noopRunnable));
4027	>	funs.add(y -> m.thenAccept(y, noopConsumer));
4028	>	funs.add(y -> m.thenApply(y, incFunction));
4029	>
4030	>	funs.add(y -> m.runAfterEither(y, incomplete, noopRunnable));
4031	>	funs.add(y -> m.acceptEither(y, incomplete, noopConsumer));
4032	>	funs.add(y -> m.applyToEither(y, incomplete, incFunction));
4033	>
4034	>	funs.add(y -> m.runAfterBoth(y, v42, noopRunnable));
4035	>	funs.add(y -> m.runAfterBoth(v42, y, noopRunnable));
4036	>	funs.add(y -> m.thenAcceptBoth(y, v42, new SubtractAction(m)));
4037	>	funs.add(y -> m.thenAcceptBoth(v42, y, new SubtractAction(m)));
4038	>	funs.add(y -> m.thenCombine(y, v42, new SubtractFunction(m)));
4039	>	funs.add(y -> m.thenCombine(v42, y, new SubtractFunction(m)));
4040	>
4041	>	funs.add(y -> m.whenComplete(y, (Integer r, Throwable t) -> {}));
4042	>
4043	>	funs.add(y -> m.thenCompose(y, new CompletableFutureInc(m)));
4044	>
4045	>	funs.add(y -> CompletableFuture.allOf(y));
4046	>	funs.add(y -> CompletableFuture.allOf(y, v42));
4047	>	funs.add(y -> CompletableFuture.allOf(v42, y));
4048	>	funs.add(y -> CompletableFuture.anyOf(y));
4049	>	funs.add(y -> CompletableFuture.anyOf(y, incomplete));
4050	>	funs.add(y -> CompletableFuture.anyOf(incomplete, y));
4051
4052		for (Function<CompletableFuture<Integer>, CompletableFuture<?>>
4053		fun : funs) {
#	Line 3939 | Line 4104 | public class CompletableFutureTest exten
4104		public void testMinimalCompletionStage_minimality() {
4105		if (!testImplementationDetails) return;
4106		Function<Method, String> toSignature =
4107	<	(method) -> method.getName() + Arrays.toString(method.getParameterTypes());
4107	>	method -> method.getName() + Arrays.toString(method.getParameterTypes());
4108		Predicate<Method> isNotStatic =
4109	<	(method) -> (method.getModifiers() & Modifier.STATIC) == 0;
4109	>	method -> (method.getModifiers() & Modifier.STATIC) == 0;
4110		List<Method> minimalMethods =
4111		Stream.of(Object.class, CompletionStage.class)
4112	<	.flatMap((klazz) -> Stream.of(klazz.getMethods()))
4112	>	.flatMap(klazz -> Stream.of(klazz.getMethods()))
4113		.filter(isNotStatic)
4114		.collect(Collectors.toList());
4115		// Methods from CompletableFuture permitted NOT to throw UOE
#	Line 3960 | Line 4125 | public class CompletableFutureTest exten
4125		.collect(Collectors.toSet());
4126		List<Method> allMethods = Stream.of(CompletableFuture.class.getMethods())
4127		.filter(isNotStatic)
4128	<	.filter((method) -> !permittedMethodSignatures.contains(toSignature.apply(method)))
4128	>	.filter(method -> !permittedMethodSignatures.contains(toSignature.apply(method)))
4129		.collect(Collectors.toList());
4130
4131		List<CompletionStage<Integer>> stages = new ArrayList<>();
4132	<	stages.add(new CompletableFuture<Integer>().minimalCompletionStage());
4132	>	CompletionStage<Integer> min =
4133	>	new CompletableFuture<Integer>().minimalCompletionStage();
4134	>	stages.add(min);
4135	>	stages.add(min.thenApply(x -> x));
4136		stages.add(CompletableFuture.completedStage(1));
4137		stages.add(CompletableFuture.failedStage(new CFException()));
4138
#	Line 4000 | Line 4168 | public class CompletableFutureTest exten
4168		throw new Error("Methods did not throw UOE: " + bugs);
4169		}
4170
4171	+	/**
4172	+	* minimalStage.toCompletableFuture() returns a CompletableFuture that
4173	+	* is completed normally, with the same value, when source is.
4174	+	*/
4175	+	public void testMinimalCompletionStage_toCompletableFuture_normalCompletion() {
4176	+	for (boolean createIncomplete : new boolean[] { true, false })
4177	+	for (Integer v1 : new Integer[] { 1, null })
4178	+	{
4179	+	CompletableFuture<Integer> f = new CompletableFuture<>();
4180	+	CompletionStage<Integer> minimal = f.minimalCompletionStage();
4181	+	if (!createIncomplete) assertTrue(f.complete(v1));
4182	+	CompletableFuture<Integer> g = minimal.toCompletableFuture();
4183	+	if (createIncomplete) {
4184	+	checkIncomplete(f);
4185	+	checkIncomplete(g);
4186	+	assertTrue(f.complete(v1));
4187	+	}
4188	+	checkCompletedNormally(f, v1);
4189	+	checkCompletedNormally(g, v1);
4190	+	}}
4191	+
4192	+	/**
4193	+	* minimalStage.toCompletableFuture() returns a CompletableFuture that
4194	+	* is completed exceptionally when source is.
4195	+	*/
4196	+	public void testMinimalCompletionStage_toCompletableFuture_exceptionalCompletion() {
4197	+	for (boolean createIncomplete : new boolean[] { true, false })
4198	+	{
4199	+	CFException ex = new CFException();
4200	+	CompletableFuture<Integer> f = new CompletableFuture<>();
4201	+	CompletionStage<Integer> minimal = f.minimalCompletionStage();
4202	+	if (!createIncomplete) f.completeExceptionally(ex);
4203	+	CompletableFuture<Integer> g = minimal.toCompletableFuture();
4204	+	if (createIncomplete) {
4205	+	checkIncomplete(f);
4206	+	checkIncomplete(g);
4207	+	f.completeExceptionally(ex);
4208	+	}
4209	+	checkCompletedExceptionally(f, ex);
4210	+	checkCompletedWithWrappedException(g, ex);
4211	+	}}
4212	+
4213	+	/**
4214	+	* minimalStage.toCompletableFuture() gives mutable CompletableFuture
4215	+	*/
4216	+	public void testMinimalCompletionStage_toCompletableFuture_mutable() {
4217	+	for (Integer v1 : new Integer[] { 1, null })
4218	+	{
4219	+	CompletableFuture<Integer> f = new CompletableFuture<>();
4220	+	CompletionStage minimal = f.minimalCompletionStage();
4221	+	CompletableFuture<Integer> g = minimal.toCompletableFuture();
4222	+	assertTrue(g.complete(v1));
4223	+	checkCompletedNormally(g, v1);
4224	+	checkIncomplete(f);
4225	+	checkIncomplete(minimal.toCompletableFuture());
4226	+	}}
4227	+
4228	+	/**
4229	+	* minimalStage.toCompletableFuture().join() awaits completion
4230	+	*/
4231	+	public void testMinimalCompletionStage_toCompletableFuture_join() throws Exception {
4232	+	for (boolean createIncomplete : new boolean[] { true, false })
4233	+	for (Integer v1 : new Integer[] { 1, null })
4234	+	{
4235	+	CompletableFuture<Integer> f = new CompletableFuture<>();
4236	+	if (!createIncomplete) assertTrue(f.complete(v1));
4237	+	CompletionStage<Integer> minimal = f.minimalCompletionStage();
4238	+	if (createIncomplete) assertTrue(f.complete(v1));
4239	+	assertEquals(v1, minimal.toCompletableFuture().join());
4240	+	assertEquals(v1, minimal.toCompletableFuture().get());
4241	+	checkCompletedNormally(minimal.toCompletableFuture(), v1);
4242	+	}}
4243	+
4244	+	/**
4245	+	* Completion of a toCompletableFuture copy of a minimal stage
4246	+	* does not complete its source.
4247	+	*/
4248	+	public void testMinimalCompletionStage_toCompletableFuture_oneWayPropagation() {
4249	+	CompletableFuture<Integer> f = new CompletableFuture<>();
4250	+	CompletionStage<Integer> g = f.minimalCompletionStage();
4251	+	assertTrue(g.toCompletableFuture().complete(1));
4252	+	assertTrue(g.toCompletableFuture().complete(null));
4253	+	assertTrue(g.toCompletableFuture().cancel(true));
4254	+	assertTrue(g.toCompletableFuture().cancel(false));
4255	+	assertTrue(g.toCompletableFuture().completeExceptionally(new CFException()));
4256	+	checkIncomplete(g.toCompletableFuture());
4257	+	f.complete(1);
4258	+	checkCompletedNormally(g.toCompletableFuture(), 1);
4259	+	}
4260	+
4261	+	/** Demo utility method for external reliable toCompletableFuture */
4262	+	static <T> CompletableFuture<T> toCompletableFuture(CompletionStage<T> stage) {
4263	+	CompletableFuture<T> f = new CompletableFuture<>();
4264	+	stage.handle((T t, Throwable ex) -> {
4265	+	if (ex != null) f.completeExceptionally(ex);
4266	+	else f.complete(t);
4267	+	return null;
4268	+	});
4269	+	return f;
4270	+	}
4271	+
4272	+	/** Demo utility method to join a CompletionStage */
4273	+	static <T> T join(CompletionStage<T> stage) {
4274	+	return toCompletableFuture(stage).join();
4275	+	}
4276	+
4277	+	/**
4278	+	* Joining a minimal stage "by hand" works
4279	+	*/
4280	+	public void testMinimalCompletionStage_join_by_hand() {
4281	+	for (boolean createIncomplete : new boolean[] { true, false })
4282	+	for (Integer v1 : new Integer[] { 1, null })
4283	+	{
4284	+	CompletableFuture<Integer> f = new CompletableFuture<>();
4285	+	CompletionStage<Integer> minimal = f.minimalCompletionStage();
4286	+	CompletableFuture<Integer> g = new CompletableFuture<>();
4287	+	if (!createIncomplete) assertTrue(f.complete(v1));
4288	+	minimal.thenAccept(x -> g.complete(x));
4289	+	if (createIncomplete) assertTrue(f.complete(v1));
4290	+	g.join();
4291	+	checkCompletedNormally(g, v1);
4292	+	checkCompletedNormally(f, v1);
4293	+	assertEquals(v1, join(minimal));
4294	+	}}
4295	+
4296		static class Monad {
4297		static class ZeroException extends RuntimeException {
4298		public ZeroException() { super("monadic zero"); }
#	Line 4016 | Line 4309 | public class CompletableFutureTest exten
4309		static <T,U,V> Function<T, CompletableFuture<V>> compose
4310		(Function<T, CompletableFuture<U>> f,
4311		Function<U, CompletableFuture<V>> g) {
4312	<	return (x) -> f.apply(x).thenCompose(g);
4312	>	return x -> f.apply(x).thenCompose(g);
4313		}
4314
4315		static void assertZero(CompletableFuture<?> f) {
4316		try {
4317		f.getNow(null);
4318	<	throw new AssertionFailedError("should throw");
4318	>	throw new AssertionError("should throw");
4319		} catch (CompletionException success) {
4320		assertTrue(success.getCause() instanceof ZeroException);
4321		}
#	Line 4096 | Line 4389 | public class CompletableFutureTest exten
4389
4390		// Some mutually non-commutative functions
4391		Function<Long, CompletableFuture<Long>> triple
4392	<	= (x) -> Monad.unit(3 * x);
4392	>	= x -> Monad.unit(3 * x);
4393		Function<Long, CompletableFuture<Long>> inc
4394	<	= (x) -> Monad.unit(x + 1);
4394	>	= x -> Monad.unit(x + 1);
4395
4396		// unit is a right identity: m >>= unit === m
4397		Monad.assertFutureEquals(inc.apply(5L).thenCompose(unit),
#	Line 4110 | Line 4403 | public class CompletableFutureTest exten
4403		// associativity: (m >>= f) >>= g === m >>= ( \x -> (f x >>= g) )
4404		Monad.assertFutureEquals(
4405		unit.apply(5L).thenCompose(inc).thenCompose(triple),
4406	<	unit.apply(5L).thenCompose((x) -> inc.apply(x).thenCompose(triple)));
4406	>	unit.apply(5L).thenCompose(x -> inc.apply(x).thenCompose(triple)));
4407
4408		// The case for CompletableFuture as an additive monad is weaker...
4409
#	Line 4120 | Line 4413 | public class CompletableFutureTest exten
4413		// left zero: zero >>= f === zero
4414		Monad.assertZero(zero.thenCompose(inc));
4415		// right zero: f >>= (\x -> zero) === zero
4416	<	Monad.assertZero(inc.apply(5L).thenCompose((x) -> zero));
4416	>	Monad.assertZero(inc.apply(5L).thenCompose(x -> zero));
4417
4418		// f plus zero === f
4419		Monad.assertFutureEquals(Monad.unit(5L),
#	Line 4147 | Line 4440 | public class CompletableFutureTest exten
4440		}
4441
4442		/** Test long recursive chains of CompletableFutures with cascading completions */
4443	+	@SuppressWarnings("FutureReturnValueIgnored")
4444		public void testRecursiveChains() throws Throwable {
4445		for (ExecutionMode m : ExecutionMode.values())
4446		for (boolean addDeadEnds : new boolean[] { true, false })
#	Line 4171 | Line 4465 | public class CompletableFutureTest exten
4465		* A single CompletableFuture with many dependents.
4466		* A demo of scalability - runtime is O(n).
4467		*/
4468	+	@SuppressWarnings("FutureReturnValueIgnored")
4469		public void testManyDependents() throws Throwable {
4470		final int n = expensiveTests ? 1_000_000 : 10;
4471		final CompletableFuture<Void> head = new CompletableFuture<>();
#	Line 4178 | Line 4473 | public class CompletableFutureTest exten
4473		final AtomicInteger count = new AtomicInteger(0);
4474		for (int i = 0; i < n; i++) {
4475		head.thenRun(() -> count.getAndIncrement());
4476	<	head.thenAccept((x) -> count.getAndIncrement());
4477	<	head.thenApply((x) -> count.getAndIncrement());
4476	>	head.thenAccept(x -> count.getAndIncrement());
4477	>	head.thenApply(x -> count.getAndIncrement());
4478
4479		head.runAfterBoth(complete, () -> count.getAndIncrement());
4480		head.thenAcceptBoth(complete, (x, y) -> count.getAndIncrement());
#	Line 4189 | Line 4484 | public class CompletableFutureTest exten
4484		complete.thenCombine(head, (x, y) -> count.getAndIncrement());
4485
4486		head.runAfterEither(new CompletableFuture<Void>(), () -> count.getAndIncrement());
4487	<	head.acceptEither(new CompletableFuture<Void>(), (x) -> count.getAndIncrement());
4488	<	head.applyToEither(new CompletableFuture<Void>(), (x) -> count.getAndIncrement());
4487	>	head.acceptEither(new CompletableFuture<Void>(), x -> count.getAndIncrement());
4488	>	head.applyToEither(new CompletableFuture<Void>(), x -> count.getAndIncrement());
4489		new CompletableFuture<Void>().runAfterEither(head, () -> count.getAndIncrement());
4490	<	new CompletableFuture<Void>().acceptEither(head, (x) -> count.getAndIncrement());
4491	<	new CompletableFuture<Void>().applyToEither(head, (x) -> count.getAndIncrement());
4490	>	new CompletableFuture<Void>().acceptEither(head, x -> count.getAndIncrement());
4491	>	new CompletableFuture<Void>().applyToEither(head, x -> count.getAndIncrement());
4492		}
4493		head.complete(null);
4494		assertEquals(5 * 3 * n, count.get());
4495		}
4496
4497		/** ant -Dvmoptions=-Xmx8m -Djsr166.expensiveTests=true -Djsr166.tckTestClass=CompletableFutureTest tck */
4498	+	@SuppressWarnings("FutureReturnValueIgnored")
4499		public void testCoCompletionGarbageRetention() throws Throwable {
4500		final int n = expensiveTests ? 1_000_000 : 10;
4501		final CompletableFuture<Integer> incomplete = new CompletableFuture<>();
#	Line 4210 | Line 4506 | public class CompletableFutureTest exten
4506		f.complete(null);
4507
4508		f = new CompletableFuture<>();
4509	<	f.acceptEither(incomplete, (x) -> {});
4509	>	f.acceptEither(incomplete, x -> {});
4510		f.complete(null);
4511
4512		f = new CompletableFuture<>();
4513	<	f.applyToEither(incomplete, (x) -> x);
4513	>	f.applyToEither(incomplete, x -> x);
4514		f.complete(null);
4515
4516		f = new CompletableFuture<>();
4517	<	CompletableFuture.anyOf(new CompletableFuture<?>[] { f, incomplete });
4517	>	CompletableFuture.anyOf(f, incomplete);
4518		f.complete(null);
4519		}
4520
#	Line 4228 | Line 4524 | public class CompletableFutureTest exten
4524		f.complete(null);
4525
4526		f = new CompletableFuture<>();
4527	<	incomplete.acceptEither(f, (x) -> {});
4527	>	incomplete.acceptEither(f, x -> {});
4528		f.complete(null);
4529
4530		f = new CompletableFuture<>();
4531	<	incomplete.applyToEither(f, (x) -> x);
4531	>	incomplete.applyToEither(f, x -> x);
4532		f.complete(null);
4533
4534		f = new CompletableFuture<>();
4535	<	CompletableFuture.anyOf(new CompletableFuture<?>[] { incomplete, f });
4535	>	CompletableFuture.anyOf(incomplete, f);
4536		f.complete(null);
4537		}
4538		}
#	Line 4290 | Line 4586 | public class CompletableFutureTest exten
4586		assertTrue(neverCompleted.thenRun(() -> {}).cancel(true));
4587		}
4588
4589	+	/**
4590	+	* Checks for garbage retention when MinimalStage.toCompletableFuture()
4591	+	* is invoked many times.
4592	+	* 8161600: Garbage retention when source CompletableFutures are never completed
4593	+	*
4594	+	* As of 2016-07, fails with OOME:
4595	+	* ant -Dvmoptions=-Xmx8m -Djsr166.expensiveTests=true -Djsr166.tckTestClass=CompletableFutureTest -Djsr166.methodFilter=testToCompletableFutureGarbageRetention tck
4596	+	*/
4597	+	public void testToCompletableFutureGarbageRetention() throws Throwable {
4598	+	final int n = expensiveTests ? 900_000 : 10;
4599	+	CompletableFuture<Integer> neverCompleted = new CompletableFuture<>();
4600	+	CompletionStage minimal = neverCompleted.minimalCompletionStage();
4601	+	for (int i = 0; i < n; i++)
4602	+	assertTrue(minimal.toCompletableFuture().cancel(true));
4603	+	}
4604	+
4605		//     static <U> U join(CompletionStage<U> stage) {
4606		//         CompletableFuture<U> f = new CompletableFuture<>();
4607		//         stage.whenComplete((v, ex) -> {
#	Line 4314 | Line 4626 | public class CompletableFutureTest exten
4626		//         return stage.toCompletableFuture().copy().isDone();
4627		//     }
4628
4629	+	// For testing default implementations
4630	+	// Only non-default interface methods defined.
4631	+	static final class DelegatedCompletionStage<T> implements CompletionStage<T> {
4632	+	final CompletableFuture<T> cf;
4633	+	DelegatedCompletionStage(CompletableFuture<T> cf) { this.cf = cf; }
4634	+	public CompletableFuture<T> toCompletableFuture() {
4635	+	return cf; }
4636	+	public CompletionStage<Void> thenRun
4637	+	(Runnable action) {
4638	+	return cf.thenRun(action); }
4639	+	public CompletionStage<Void> thenRunAsync
4640	+	(Runnable action) {
4641	+	return cf.thenRunAsync(action); }
4642	+	public CompletionStage<Void> thenRunAsync
4643	+	(Runnable action,
4644	+	Executor executor) {
4645	+	return cf.thenRunAsync(action, executor); }
4646	+	public CompletionStage<Void> thenAccept
4647	+	(Consumer<? super T> action) {
4648	+	return cf.thenAccept(action); }
4649	+	public CompletionStage<Void> thenAcceptAsync
4650	+	(Consumer<? super T> action) {
4651	+	return cf.thenAcceptAsync(action); }
4652	+	public CompletionStage<Void> thenAcceptAsync
4653	+	(Consumer<? super T> action,
4654	+	Executor executor) {
4655	+	return cf.thenAcceptAsync(action, executor); }
4656	+	public <U> CompletionStage<U> thenApply
4657	+	(Function<? super T,? extends U> a) {
4658	+	return cf.thenApply(a); }
4659	+	public <U> CompletionStage<U> thenApplyAsync
4660	+	(Function<? super T,? extends U> fn) {
4661	+	return cf.thenApplyAsync(fn); }
4662	+	public <U> CompletionStage<U> thenApplyAsync
4663	+	(Function<? super T,? extends U> fn,
4664	+	Executor executor) {
4665	+	return cf.thenApplyAsync(fn, executor); }
4666	+	public <U,V> CompletionStage<V> thenCombine
4667	+	(CompletionStage<? extends U> other,
4668	+	BiFunction<? super T,? super U,? extends V> fn) {
4669	+	return cf.thenCombine(other, fn); }
4670	+	public <U,V> CompletionStage<V> thenCombineAsync
4671	+	(CompletionStage<? extends U> other,
4672	+	BiFunction<? super T,? super U,? extends V> fn) {
4673	+	return cf.thenCombineAsync(other, fn); }
4674	+	public <U,V> CompletionStage<V> thenCombineAsync
4675	+	(CompletionStage<? extends U> other,
4676	+	BiFunction<? super T,? super U,? extends V> fn,
4677	+	Executor executor) {
4678	+	return cf.thenCombineAsync(other, fn, executor); }
4679	+	public <U> CompletionStage<Void> thenAcceptBoth
4680	+	(CompletionStage<? extends U> other,
4681	+	BiConsumer<? super T, ? super U> action) {
4682	+	return cf.thenAcceptBoth(other, action); }
4683	+	public <U> CompletionStage<Void> thenAcceptBothAsync
4684	+	(CompletionStage<? extends U> other,
4685	+	BiConsumer<? super T, ? super U> action) {
4686	+	return cf.thenAcceptBothAsync(other, action); }
4687	+	public <U> CompletionStage<Void> thenAcceptBothAsync
4688	+	(CompletionStage<? extends U> other,
4689	+	BiConsumer<? super T, ? super U> action,
4690	+	Executor executor) {
4691	+	return cf.thenAcceptBothAsync(other, action, executor); }
4692	+	public CompletionStage<Void> runAfterBoth
4693	+	(CompletionStage<?> other,
4694	+	Runnable action) {
4695	+	return cf.runAfterBoth(other, action); }
4696	+	public CompletionStage<Void> runAfterBothAsync
4697	+	(CompletionStage<?> other,
4698	+	Runnable action) {
4699	+	return cf.runAfterBothAsync(other, action); }
4700	+	public CompletionStage<Void> runAfterBothAsync
4701	+	(CompletionStage<?> other,
4702	+	Runnable action,
4703	+	Executor executor) {
4704	+	return cf.runAfterBothAsync(other, action, executor); }
4705	+	public <U> CompletionStage<U> applyToEither
4706	+	(CompletionStage<? extends T> other,
4707	+	Function<? super T, U> fn) {
4708	+	return cf.applyToEither(other, fn); }
4709	+	public <U> CompletionStage<U> applyToEitherAsync
4710	+	(CompletionStage<? extends T> other,
4711	+	Function<? super T, U> fn) {
4712	+	return cf.applyToEitherAsync(other, fn); }
4713	+	public <U> CompletionStage<U> applyToEitherAsync
4714	+	(CompletionStage<? extends T> other,
4715	+	Function<? super T, U> fn,
4716	+	Executor executor) {
4717	+	return cf.applyToEitherAsync(other, fn, executor); }
4718	+	public CompletionStage<Void> acceptEither
4719	+	(CompletionStage<? extends T> other,
4720	+	Consumer<? super T> action) {
4721	+	return cf.acceptEither(other, action); }
4722	+	public CompletionStage<Void> acceptEitherAsync
4723	+	(CompletionStage<? extends T> other,
4724	+	Consumer<? super T> action) {
4725	+	return cf.acceptEitherAsync(other, action); }
4726	+	public CompletionStage<Void> acceptEitherAsync
4727	+	(CompletionStage<? extends T> other,
4728	+	Consumer<? super T> action,
4729	+	Executor executor) {
4730	+	return cf.acceptEitherAsync(other, action, executor); }
4731	+	public CompletionStage<Void> runAfterEither
4732	+	(CompletionStage<?> other,
4733	+	Runnable action) {
4734	+	return cf.runAfterEither(other, action); }
4735	+	public CompletionStage<Void> runAfterEitherAsync
4736	+	(CompletionStage<?> other,
4737	+	Runnable action) {
4738	+	return cf.runAfterEitherAsync(other, action); }
4739	+	public CompletionStage<Void> runAfterEitherAsync
4740	+	(CompletionStage<?> other,
4741	+	Runnable action,
4742	+	Executor executor) {
4743	+	return cf.runAfterEitherAsync(other, action, executor); }
4744	+	public <U> CompletionStage<U> thenCompose
4745	+	(Function<? super T, ? extends CompletionStage<U>> fn) {
4746	+	return cf.thenCompose(fn); }
4747	+	public <U> CompletionStage<U> thenComposeAsync
4748	+	(Function<? super T, ? extends CompletionStage<U>> fn) {
4749	+	return cf.thenComposeAsync(fn); }
4750	+	public <U> CompletionStage<U> thenComposeAsync
4751	+	(Function<? super T, ? extends CompletionStage<U>> fn,
4752	+	Executor executor) {
4753	+	return cf.thenComposeAsync(fn, executor); }
4754	+	public <U> CompletionStage<U> handle
4755	+	(BiFunction<? super T, Throwable, ? extends U> fn) {
4756	+	return cf.handle(fn); }
4757	+	public <U> CompletionStage<U> handleAsync
4758	+	(BiFunction<? super T, Throwable, ? extends U> fn) {
4759	+	return cf.handleAsync(fn); }
4760	+	public <U> CompletionStage<U> handleAsync
4761	+	(BiFunction<? super T, Throwable, ? extends U> fn,
4762	+	Executor executor) {
4763	+	return cf.handleAsync(fn, executor); }
4764	+	public CompletionStage<T> whenComplete
4765	+	(BiConsumer<? super T, ? super Throwable> action) {
4766	+	return cf.whenComplete(action); }
4767	+	public CompletionStage<T> whenCompleteAsync
4768	+	(BiConsumer<? super T, ? super Throwable> action) {
4769	+	return cf.whenCompleteAsync(action); }
4770	+	public CompletionStage<T> whenCompleteAsync
4771	+	(BiConsumer<? super T, ? super Throwable> action,
4772	+	Executor executor) {
4773	+	return cf.whenCompleteAsync(action, executor); }
4774	+	public CompletionStage<T> exceptionally
4775	+	(Function<Throwable, ? extends T> fn) {
4776	+	return cf.exceptionally(fn); }
4777	+	}
4778	+
4779	+	/**
4780	+	* default-implemented exceptionallyAsync action is not invoked when
4781	+	* source completes normally, and source result is propagated
4782	+	*/
4783	+	public void testDefaultExceptionallyAsync_normalCompletion() {
4784	+	for (boolean createIncomplete : new boolean[] { true, false })
4785	+	for (Integer v1 : new Integer[] { 1, null })
4786	+	{
4787	+	final CompletableFuture<Integer> f = new CompletableFuture<>();
4788	+	final DelegatedCompletionStage<Integer> d =
4789	+	new DelegatedCompletionStage<Integer>(f);
4790	+	if (!createIncomplete) assertTrue(f.complete(v1));
4791	+	final CompletionStage<Integer> g = d.exceptionallyAsync
4792	+	((Throwable t) -> {
4793	+	threadFail("should not be called");
4794	+	return null;            // unreached
4795	+	});
4796	+	if (createIncomplete) assertTrue(f.complete(v1));
4797	+
4798	+	checkCompletedNormally(g.toCompletableFuture(), v1);
4799	+	}}
4800	+
4801	+	/**
4802	+	* default-implemented exceptionallyAsync action completes with
4803	+	* function value on source exception
4804	+	*/
4805	+	public void testDefaultExceptionallyAsync_exceptionalCompletion() {
4806	+	for (boolean createIncomplete : new boolean[] { true, false })
4807	+	for (Integer v1 : new Integer[] { 1, null })
4808	+	{
4809	+	final AtomicInteger a = new AtomicInteger(0);
4810	+	final CFException ex = new CFException();
4811	+	final CompletableFuture<Integer> f = new CompletableFuture<>();
4812	+	final DelegatedCompletionStage<Integer> d =
4813	+	new DelegatedCompletionStage<Integer>(f);
4814	+	if (!createIncomplete) f.completeExceptionally(ex);
4815	+	final CompletionStage<Integer> g = d.exceptionallyAsync
4816	+	((Throwable t) -> {
4817	+	threadAssertSame(t, ex);
4818	+	a.getAndIncrement();
4819	+	return v1;
4820	+	});
4821	+	if (createIncomplete) f.completeExceptionally(ex);
4822	+
4823	+	checkCompletedNormally(g.toCompletableFuture(), v1);
4824	+	assertEquals(1, a.get());
4825	+	}}
4826	+
4827	+	/**
4828	+	* Under default implementation, if an "exceptionally action"
4829	+	* throws an exception, it completes exceptionally with that
4830	+	* exception
4831	+	*/
4832	+	public void testDefaultExceptionallyAsync_exceptionalCompletionActionFailed() {
4833	+	for (boolean createIncomplete : new boolean[] { true, false })
4834	+	{
4835	+	final AtomicInteger a = new AtomicInteger(0);
4836	+	final CFException ex1 = new CFException();
4837	+	final CFException ex2 = new CFException();
4838	+	final CompletableFuture<Integer> f = new CompletableFuture<>();
4839	+	final DelegatedCompletionStage<Integer> d =
4840	+	new DelegatedCompletionStage<Integer>(f);
4841	+	if (!createIncomplete) f.completeExceptionally(ex1);
4842	+	final CompletionStage<Integer> g = d.exceptionallyAsync
4843	+	((Throwable t) -> {
4844	+	threadAssertSame(t, ex1);
4845	+	a.getAndIncrement();
4846	+	throw ex2;
4847	+	});
4848	+	if (createIncomplete) f.completeExceptionally(ex1);
4849	+
4850	+	checkCompletedWithWrappedException(g.toCompletableFuture(), ex2);
4851	+	checkCompletedExceptionally(f, ex1);
4852	+	checkCompletedExceptionally(d.toCompletableFuture(), ex1);
4853	+	assertEquals(1, a.get());
4854	+	}}
4855	+
4856	+	/**
4857	+	* default exceptionallyCompose result completes normally after normal
4858	+	* completion of source
4859	+	*/
4860	+	public void testDefaultExceptionallyCompose_normalCompletion() {
4861	+	for (boolean createIncomplete : new boolean[] { true, false })
4862	+	for (Integer v1 : new Integer[] { 1, null })
4863	+	{
4864	+	final CompletableFuture<Integer> f = new CompletableFuture<>();
4865	+	final ExceptionalCompletableFutureFunction r =
4866	+	new ExceptionalCompletableFutureFunction(ExecutionMode.SYNC);
4867	+	final DelegatedCompletionStage<Integer> d =
4868	+	new DelegatedCompletionStage<Integer>(f);
4869	+	if (!createIncomplete) assertTrue(f.complete(v1));
4870	+	final CompletionStage<Integer> g = d.exceptionallyCompose(r);
4871	+	if (createIncomplete) assertTrue(f.complete(v1));
4872	+
4873	+	checkCompletedNormally(f, v1);
4874	+	checkCompletedNormally(g.toCompletableFuture(), v1);
4875	+	r.assertNotInvoked();
4876	+	}}
4877	+
4878	+	/**
4879	+	* default-implemented exceptionallyCompose result completes
4880	+	* normally after exceptional completion of source
4881	+	*/
4882	+	public void testDefaultExceptionallyCompose_exceptionalCompletion() {
4883	+	for (boolean createIncomplete : new boolean[] { true, false })
4884	+	{
4885	+	final CFException ex = new CFException();
4886	+	final ExceptionalCompletableFutureFunction r =
4887	+	new ExceptionalCompletableFutureFunction(ExecutionMode.SYNC);
4888	+	final CompletableFuture<Integer> f = new CompletableFuture<>();
4889	+	final DelegatedCompletionStage<Integer> d =
4890	+	new DelegatedCompletionStage<Integer>(f);
4891	+	if (!createIncomplete) f.completeExceptionally(ex);
4892	+	final CompletionStage<Integer> g = d.exceptionallyCompose(r);
4893	+	if (createIncomplete) f.completeExceptionally(ex);
4894	+
4895	+	checkCompletedExceptionally(f, ex);
4896	+	checkCompletedNormally(g.toCompletableFuture(), r.value);
4897	+	r.assertInvoked();
4898	+	}}
4899	+
4900	+	/**
4901	+	* default-implemented exceptionallyCompose completes
4902	+	* exceptionally on exception if action does
4903	+	*/
4904	+	public void testDefaultExceptionallyCompose_actionFailed() {
4905	+	for (boolean createIncomplete : new boolean[] { true, false })
4906	+	for (Integer v1 : new Integer[] { 1, null })
4907	+	{
4908	+	final CFException ex = new CFException();
4909	+	final CompletableFuture<Integer> f = new CompletableFuture<>();
4910	+	final FailingExceptionalCompletableFutureFunction r
4911	+	= new FailingExceptionalCompletableFutureFunction(ExecutionMode.SYNC);
4912	+	final DelegatedCompletionStage<Integer> d =
4913	+	new DelegatedCompletionStage<Integer>(f);
4914	+	if (!createIncomplete) f.completeExceptionally(ex);
4915	+	final CompletionStage<Integer> g = d.exceptionallyCompose(r);
4916	+	if (createIncomplete) f.completeExceptionally(ex);
4917	+
4918	+	checkCompletedExceptionally(f, ex);
4919	+	checkCompletedWithWrappedException(g.toCompletableFuture(), r.ex);
4920	+	r.assertInvoked();
4921	+	}}
4922	+
4923	+	/**
4924	+	* default exceptionallyComposeAsync result completes normally after normal
4925	+	* completion of source
4926	+	*/
4927	+	public void testDefaultExceptionallyComposeAsync_normalCompletion() {
4928	+	for (boolean createIncomplete : new boolean[] { true, false })
4929	+	for (Integer v1 : new Integer[] { 1, null })
4930	+	{
4931	+	final CompletableFuture<Integer> f = new CompletableFuture<>();
4932	+	final ExceptionalCompletableFutureFunction r =
4933	+	new ExceptionalCompletableFutureFunction(ExecutionMode.ASYNC);
4934	+	final DelegatedCompletionStage<Integer> d =
4935	+	new DelegatedCompletionStage<Integer>(f);
4936	+	if (!createIncomplete) assertTrue(f.complete(v1));
4937	+	final CompletionStage<Integer> g = d.exceptionallyComposeAsync(r);
4938	+	if (createIncomplete) assertTrue(f.complete(v1));
4939	+
4940	+	checkCompletedNormally(f, v1);
4941	+	checkCompletedNormally(g.toCompletableFuture(), v1);
4942	+	r.assertNotInvoked();
4943	+	}}
4944	+
4945	+	/**
4946	+	* default-implemented exceptionallyComposeAsync result completes
4947	+	* normally after exceptional completion of source
4948	+	*/
4949	+	public void testDefaultExceptionallyComposeAsync_exceptionalCompletion() {
4950	+	for (boolean createIncomplete : new boolean[] { true, false })
4951	+	{
4952	+	final CFException ex = new CFException();
4953	+	final ExceptionalCompletableFutureFunction r =
4954	+	new ExceptionalCompletableFutureFunction(ExecutionMode.ASYNC);
4955	+	final CompletableFuture<Integer> f = new CompletableFuture<>();
4956	+	final DelegatedCompletionStage<Integer> d =
4957	+	new DelegatedCompletionStage<Integer>(f);
4958	+	if (!createIncomplete) f.completeExceptionally(ex);
4959	+	final CompletionStage<Integer> g = d.exceptionallyComposeAsync(r);
4960	+	if (createIncomplete) f.completeExceptionally(ex);
4961	+
4962	+	checkCompletedExceptionally(f, ex);
4963	+	checkCompletedNormally(g.toCompletableFuture(), r.value);
4964	+	r.assertInvoked();
4965	+	}}
4966	+
4967	+	/**
4968	+	* default-implemented exceptionallyComposeAsync completes
4969	+	* exceptionally on exception if action does
4970	+	*/
4971	+	public void testDefaultExceptionallyComposeAsync_actionFailed() {
4972	+	for (boolean createIncomplete : new boolean[] { true, false })
4973	+	for (Integer v1 : new Integer[] { 1, null })
4974	+	{
4975	+	final CFException ex = new CFException();
4976	+	final CompletableFuture<Integer> f = new CompletableFuture<>();
4977	+	final FailingExceptionalCompletableFutureFunction r
4978	+	= new FailingExceptionalCompletableFutureFunction(ExecutionMode.ASYNC);
4979	+	final DelegatedCompletionStage<Integer> d =
4980	+	new DelegatedCompletionStage<Integer>(f);
4981	+	if (!createIncomplete) f.completeExceptionally(ex);
4982	+	final CompletionStage<Integer> g = d.exceptionallyComposeAsync(r);
4983	+	if (createIncomplete) f.completeExceptionally(ex);
4984	+
4985	+	checkCompletedExceptionally(f, ex);
4986	+	checkCompletedWithWrappedException(g.toCompletableFuture(), r.ex);
4987	+	r.assertInvoked();
4988	+	}}
4989	+
4990	+
4991	+	/**
4992	+	* default exceptionallyComposeAsync result completes normally after normal
4993	+	* completion of source
4994	+	*/
4995	+	public void testDefaultExceptionallyComposeAsyncExecutor_normalCompletion() {
4996	+	for (boolean createIncomplete : new boolean[] { true, false })
4997	+	for (Integer v1 : new Integer[] { 1, null })
4998	+	{
4999	+	final CompletableFuture<Integer> f = new CompletableFuture<>();
5000	+	final ExceptionalCompletableFutureFunction r =
5001	+	new ExceptionalCompletableFutureFunction(ExecutionMode.EXECUTOR);
5002	+	final DelegatedCompletionStage<Integer> d =
5003	+	new DelegatedCompletionStage<Integer>(f);
5004	+	if (!createIncomplete) assertTrue(f.complete(v1));
5005	+	final CompletionStage<Integer> g = d.exceptionallyComposeAsync(r, new ThreadExecutor());
5006	+	if (createIncomplete) assertTrue(f.complete(v1));
5007	+
5008	+	checkCompletedNormally(f, v1);
5009	+	checkCompletedNormally(g.toCompletableFuture(), v1);
5010	+	r.assertNotInvoked();
5011	+	}}
5012	+
5013	+	/**
5014	+	* default-implemented exceptionallyComposeAsync result completes
5015	+	* normally after exceptional completion of source
5016	+	*/
5017	+	public void testDefaultExceptionallyComposeAsyncExecutor_exceptionalCompletion() {
5018	+	for (boolean createIncomplete : new boolean[] { true, false })
5019	+	{
5020	+	final CFException ex = new CFException();
5021	+	final ExceptionalCompletableFutureFunction r =
5022	+	new ExceptionalCompletableFutureFunction(ExecutionMode.EXECUTOR);
5023	+	final CompletableFuture<Integer> f = new CompletableFuture<>();
5024	+	final DelegatedCompletionStage<Integer> d =
5025	+	new DelegatedCompletionStage<Integer>(f);
5026	+	if (!createIncomplete) f.completeExceptionally(ex);
5027	+	final CompletionStage<Integer> g = d.exceptionallyComposeAsync(r, new ThreadExecutor());
5028	+	if (createIncomplete) f.completeExceptionally(ex);
5029	+
5030	+	checkCompletedExceptionally(f, ex);
5031	+	checkCompletedNormally(g.toCompletableFuture(), r.value);
5032	+	r.assertInvoked();
5033	+	}}
5034	+
5035	+	/**
5036	+	* default-implemented exceptionallyComposeAsync completes
5037	+	* exceptionally on exception if action does
5038	+	*/
5039	+	public void testDefaultExceptionallyComposeAsyncExecutor_actionFailed() {
5040	+	for (boolean createIncomplete : new boolean[] { true, false })
5041	+	for (Integer v1 : new Integer[] { 1, null })
5042	+	{
5043	+	final CFException ex = new CFException();
5044	+	final CompletableFuture<Integer> f = new CompletableFuture<>();
5045	+	final FailingExceptionalCompletableFutureFunction r
5046	+	= new FailingExceptionalCompletableFutureFunction(ExecutionMode.EXECUTOR);
5047	+	final DelegatedCompletionStage<Integer> d =
5048	+	new DelegatedCompletionStage<Integer>(f);
5049	+	if (!createIncomplete) f.completeExceptionally(ex);
5050	+	final CompletionStage<Integer> g = d.exceptionallyComposeAsync(r, new ThreadExecutor());
5051	+	if (createIncomplete) f.completeExceptionally(ex);
5052	+
5053	+	checkCompletedExceptionally(f, ex);
5054	+	checkCompletedWithWrappedException(g.toCompletableFuture(), r.ex);
5055	+	r.assertInvoked();
5056	+	}}
5057	+
5058		}

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