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Comparing jsr166/src/test/tck/CompletableFutureTest.java (file contents):
Revision 1.93 by jsr166, Tue Jun 17 21:09:56 2014 UTC vs.
Revision 1.126 by jsr166, Fri Oct 2 21:08:48 2015 UTC

#	Line 5 | Line 5
5		* http://creativecommons.org/publicdomain/zero/1.0/
6		*/
7
8	<	import junit.framework.*;
8	>	import static java.util.concurrent.TimeUnit.MILLISECONDS;
9	>	import static java.util.concurrent.TimeUnit.SECONDS;
10	>
11	>	import java.lang.reflect.Method;
12	>	import java.lang.reflect.Modifier;
13	>
14	>	import java.util.stream.Collectors;
15	>	import java.util.stream.Stream;
16	>
17	>	import java.util.ArrayList;
18	>	import java.util.Arrays;
19	>	import java.util.List;
20	>	import java.util.Objects;
21	>	import java.util.Set;
22		import java.util.concurrent.Callable;
10	–	import java.util.concurrent.Executor;
11	–	import java.util.concurrent.ExecutorService;
12	–	import java.util.concurrent.Executors;
23		import java.util.concurrent.CancellationException;
14	–	import java.util.concurrent.CountDownLatch;
15	–	import java.util.concurrent.ExecutionException;
16	–	import java.util.concurrent.Future;
24		import java.util.concurrent.CompletableFuture;
25		import java.util.concurrent.CompletionException;
26		import java.util.concurrent.CompletionStage;
27	+	import java.util.concurrent.ExecutionException;
28	+	import java.util.concurrent.Executor;
29		import java.util.concurrent.ForkJoinPool;
30		import java.util.concurrent.ForkJoinTask;
31		import java.util.concurrent.TimeoutException;
32	+	import java.util.concurrent.TimeUnit;
33		import java.util.concurrent.atomic.AtomicInteger;
34	<	import static java.util.concurrent.TimeUnit.MILLISECONDS;
25	<	import static java.util.concurrent.TimeUnit.SECONDS;
26	<	import java.util.*;
27	<	import java.util.function.Supplier;
28	<	import java.util.function.Consumer;
34	>	import java.util.concurrent.atomic.AtomicReference;
35		import java.util.function.BiConsumer;
30	–	import java.util.function.Function;
36		import java.util.function.BiFunction;
37	+	import java.util.function.Consumer;
38	+	import java.util.function.Function;
39	+	import java.util.function.Predicate;
40	+	import java.util.function.Supplier;
41	+
42	+	import junit.framework.Test;
43	+	import junit.framework.TestSuite;
44
45		public class CompletableFutureTest extends JSR166TestCase {
46
47		public static void main(String[] args) {
48	<	junit.textui.TestRunner.run(suite());
48	>	main(suite(), args);
49		}
50		public static Test suite() {
51		return new TestSuite(CompletableFutureTest.class);
#	Line 44 | Line 56 | public class CompletableFutureTest exten
56		void checkIncomplete(CompletableFuture<?> f) {
57		assertFalse(f.isDone());
58		assertFalse(f.isCancelled());
59	<	assertTrue(f.toString().contains("[Not completed]"));
59	>	assertTrue(f.toString().contains("Not completed"));
60		try {
61		assertNull(f.getNow(null));
62		} catch (Throwable fail) { threadUnexpectedException(fail); }
#	Line 57 | Line 69 | public class CompletableFutureTest exten
69		}
70
71		<T> void checkCompletedNormally(CompletableFuture<T> f, T value) {
72	<	try {
73	<	assertEquals(value, f.get(LONG_DELAY_MS, MILLISECONDS));
62	<	} catch (Throwable fail) { threadUnexpectedException(fail); }
72	>	checkTimedGet(f, value);
73	>
74		try {
75		assertEquals(value, f.join());
76		} catch (Throwable fail) { threadUnexpectedException(fail); }
#	Line 75 | Line 86 | public class CompletableFutureTest exten
86		assertTrue(f.toString().contains("[Completed normally]"));
87		}
88
89	<	void checkCompletedWithWrappedCFException(CompletableFuture<?> f) {
90	<	try {
91	<	f.get(LONG_DELAY_MS, MILLISECONDS);
92	<	shouldThrow();
93	<	} catch (ExecutionException success) {
94	<	assertTrue(success.getCause() instanceof CFException);
95	<	} catch (Throwable fail) { threadUnexpectedException(fail); }
96	<	try {
97	<	f.join();
98	<	shouldThrow();
99	<	} catch (CompletionException success) {
100	<	assertTrue(success.getCause() instanceof CFException);
101	<	}
102	<	try {
103	<	f.getNow(null);
104	<	shouldThrow();
105	<	} catch (CompletionException success) {
95	<	assertTrue(success.getCause() instanceof CFException);
89	>	/**
90	>	* Returns the "raw" internal exceptional completion of f,
91	>	* without any additional wrapping with CompletionException.
92	>	*/
93	>	<U> Throwable exceptionalCompletion(CompletableFuture<U> f) {
94	>	// handle (and whenComplete) can distinguish between "direct"
95	>	// and "wrapped" exceptional completion
96	>	return f.handle((U u, Throwable t) -> t).join();
97	>	}
98	>
99	>	void checkCompletedExceptionally(CompletableFuture<?> f,
100	>	boolean wrapped,
101	>	Consumer<Throwable> checker) {
102	>	Throwable cause = exceptionalCompletion(f);
103	>	if (wrapped) {
104	>	assertTrue(cause instanceof CompletionException);
105	>	cause = cause.getCause();
106		}
107	<	try {
98	<	f.get();
99	<	shouldThrow();
100	<	} catch (ExecutionException success) {
101	<	assertTrue(success.getCause() instanceof CFException);
102	<	} catch (Throwable fail) { threadUnexpectedException(fail); }
103	<	assertTrue(f.isDone());
104	<	assertFalse(f.isCancelled());
105	<	assertTrue(f.toString().contains("[Completed exceptionally]"));
106	<	}
107	>	checker.accept(cause);
108
109	<	<U> void checkCompletedExceptionallyWithRootCause(CompletableFuture<U> f,
109	<	Throwable ex) {
109	>	long startTime = System.nanoTime();
110		try {
111		f.get(LONG_DELAY_MS, MILLISECONDS);
112		shouldThrow();
113		} catch (ExecutionException success) {
114	<	assertSame(ex, success.getCause());
114	>	assertSame(cause, success.getCause());
115		} catch (Throwable fail) { threadUnexpectedException(fail); }
116	+	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS / 2);
117	+
118		try {
119		f.join();
120		shouldThrow();
121		} catch (CompletionException success) {
122	<	assertSame(ex, success.getCause());
123	<	}
122	>	assertSame(cause, success.getCause());
123	>	} catch (Throwable fail) { threadUnexpectedException(fail); }
124	>
125		try {
126		f.getNow(null);
127		shouldThrow();
128		} catch (CompletionException success) {
129	<	assertSame(ex, success.getCause());
130	<	}
129	>	assertSame(cause, success.getCause());
130	>	} catch (Throwable fail) { threadUnexpectedException(fail); }
131	>
132		try {
133		f.get();
134		shouldThrow();
135		} catch (ExecutionException success) {
136	<	assertSame(ex, success.getCause());
136	>	assertSame(cause, success.getCause());
137		} catch (Throwable fail) { threadUnexpectedException(fail); }
138
135	–	assertTrue(f.isDone());
139		assertFalse(f.isCancelled());
140	+	assertTrue(f.isDone());
141	+	assertTrue(f.isCompletedExceptionally());
142		assertTrue(f.toString().contains("[Completed exceptionally]"));
143		}
144
145	<	<U> void checkCompletedWithWrappedException(CompletableFuture<U> f,
146	<	Throwable ex) {
147	<	checkCompletedExceptionallyWithRootCause(f, ex);
143	<	try {
144	<	CompletableFuture<Throwable> spy = f.handle
145	<	((U u, Throwable t) -> t);
146	<	assertTrue(spy.join() instanceof CompletionException);
147	<	assertSame(ex, spy.join().getCause());
148	<	} catch (Throwable fail) { threadUnexpectedException(fail); }
145	>	void checkCompletedWithWrappedCFException(CompletableFuture<?> f) {
146	>	checkCompletedExceptionally(f, true,
147	>	(t) -> assertTrue(t instanceof CFException));
148		}
149
150	<	<U> void checkCompletedExceptionally(CompletableFuture<U> f, Throwable ex) {
151	<	checkCompletedExceptionallyWithRootCause(f, ex);
152	<	try {
153	<	CompletableFuture<Throwable> spy = f.handle
154	<	((U u, Throwable t) -> t);
155	<	assertSame(ex, spy.join());
156	<	} catch (Throwable fail) { threadUnexpectedException(fail); }
150	>	void checkCompletedWithWrappedCancellationException(CompletableFuture<?> f) {
151	>	checkCompletedExceptionally(f, true,
152	>	(t) -> assertTrue(t instanceof CancellationException));
153	>	}
154	>
155	>	void checkCompletedWithTimeoutException(CompletableFuture<?> f) {
156	>	checkCompletedExceptionally(f, false,
157	>	(t) -> assertTrue(t instanceof TimeoutException));
158	>	}
159	>
160	>	void checkCompletedWithWrappedException(CompletableFuture<?> f,
161	>	Throwable ex) {
162	>	checkCompletedExceptionally(f, true, (t) -> assertSame(t, ex));
163	>	}
164	>
165	>	void checkCompletedExceptionally(CompletableFuture<?> f, Throwable ex) {
166	>	checkCompletedExceptionally(f, false, (t) -> assertSame(t, ex));
167		}
168
169		void checkCancelled(CompletableFuture<?> f) {
170	+	long startTime = System.nanoTime();
171		try {
172		f.get(LONG_DELAY_MS, MILLISECONDS);
173		shouldThrow();
174		} catch (CancellationException success) {
175		} catch (Throwable fail) { threadUnexpectedException(fail); }
176	+	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS / 2);
177	+
178		try {
179		f.join();
180		shouldThrow();
#	Line 176 | Line 188 | public class CompletableFutureTest exten
188		shouldThrow();
189		} catch (CancellationException success) {
190		} catch (Throwable fail) { threadUnexpectedException(fail); }
179	–	assertTrue(f.isDone());
180	–	assertTrue(f.isCompletedExceptionally());
181	–	assertTrue(f.isCancelled());
182	–	assertTrue(f.toString().contains("[Completed exceptionally]"));
183	–	}
191
192	<	void checkCompletedWithWrappedCancellationException(CompletableFuture<?> f) {
193	<	try {
187	<	f.get(LONG_DELAY_MS, MILLISECONDS);
188	<	shouldThrow();
189	<	} catch (ExecutionException success) {
190	<	assertTrue(success.getCause() instanceof CancellationException);
191	<	} catch (Throwable fail) { threadUnexpectedException(fail); }
192	<	try {
193	<	f.join();
194	<	shouldThrow();
195	<	} catch (CompletionException success) {
196	<	assertTrue(success.getCause() instanceof CancellationException);
197	<	}
198	<	try {
199	<	f.getNow(null);
200	<	shouldThrow();
201	<	} catch (CompletionException success) {
202	<	assertTrue(success.getCause() instanceof CancellationException);
203	<	}
204	<	try {
205	<	f.get();
206	<	shouldThrow();
207	<	} catch (ExecutionException success) {
208	<	assertTrue(success.getCause() instanceof CancellationException);
209	<	} catch (Throwable fail) { threadUnexpectedException(fail); }
192	>	assertTrue(exceptionalCompletion(f) instanceof CancellationException);
193	>
194		assertTrue(f.isDone());
211	–	assertFalse(f.isCancelled());
195		assertTrue(f.isCompletedExceptionally());
196	+	assertTrue(f.isCancelled());
197		assertTrue(f.toString().contains("[Completed exceptionally]"));
198		}
199
#	Line 257 | Line 241 | public class CompletableFutureTest exten
241		{
242		CompletableFuture<Integer> f = new CompletableFuture<>();
243		checkIncomplete(f);
244	<	assertTrue(f.cancel(true));
245	<	assertTrue(f.cancel(true));
244	>	assertTrue(f.cancel(mayInterruptIfRunning));
245	>	assertTrue(f.cancel(mayInterruptIfRunning));
246	>	assertTrue(f.cancel(!mayInterruptIfRunning));
247		checkCancelled(f);
248		}}
249
#	Line 530 | Line 515 | public class CompletableFutureTest exten
515		}
516		}
517
533	–
518		class CompletableFutureInc extends CheckedIntegerAction
519		implements Function<Integer, CompletableFuture<Integer>>
520		{
#	Line 569 | Line 553 | public class CompletableFutureTest exten
553		}
554		}
555
556	+	static final boolean defaultExecutorIsCommonPool
557	+	= ForkJoinPool.getCommonPoolParallelism() > 1;
558	+
559		/**
560		* Permits the testing of parallel code for the 3 different
561		* execution modes without copy/pasting all the test methods.
562		*/
563		enum ExecutionMode {
564	<	DEFAULT {
564	>	SYNC {
565		public void checkExecutionMode() {
566		assertFalse(ThreadExecutor.startedCurrentThread());
567		assertNull(ForkJoinTask.getPool());
#	Line 650 | Line 637 | public class CompletableFutureTest exten
637
638		ASYNC {
639		public void checkExecutionMode() {
640	<	assertSame(ForkJoinPool.commonPool(),
641	<	ForkJoinTask.getPool());
640	>	assertEquals(defaultExecutorIsCommonPool,
641	>	(ForkJoinPool.commonPool() == ForkJoinTask.getPool()));
642		}
643		public CompletableFuture<Void> runAsync(Runnable a) {
644		return CompletableFuture.runAsync(a);
#	Line 875 | Line 862 | public class CompletableFutureTest exten
862		if (!createIncomplete) f.completeExceptionally(ex);
863		final CompletableFuture<Integer> g = f.exceptionally
864		((Throwable t) -> {
865	<	ExecutionMode.DEFAULT.checkExecutionMode();
865	>	ExecutionMode.SYNC.checkExecutionMode();
866		threadAssertSame(t, ex);
867		a.getAndIncrement();
868		return v1;
#	Line 888 | Line 875 | public class CompletableFutureTest exten
875
876		public void testExceptionally_exceptionalCompletionActionFailed() {
877		for (boolean createIncomplete : new boolean[] { true, false })
891	–	for (Integer v1 : new Integer[] { 1, null })
878		{
879		final AtomicInteger a = new AtomicInteger(0);
880		final CFException ex1 = new CFException();
#	Line 897 | Line 883 | public class CompletableFutureTest exten
883		if (!createIncomplete) f.completeExceptionally(ex1);
884		final CompletableFuture<Integer> g = f.exceptionally
885		((Throwable t) -> {
886	<	ExecutionMode.DEFAULT.checkExecutionMode();
886	>	ExecutionMode.SYNC.checkExecutionMode();
887		threadAssertSame(t, ex1);
888		a.getAndIncrement();
889		throw ex2;
#	Line 912 | Line 898 | public class CompletableFutureTest exten
898		* whenComplete action executes on normal completion, propagating
899		* source result.
900		*/
901	<	public void testWhenComplete_normalCompletion1() {
901	>	public void testWhenComplete_normalCompletion() {
902		for (ExecutionMode m : ExecutionMode.values())
903		for (boolean createIncomplete : new boolean[] { true, false })
904		for (Integer v1 : new Integer[] { 1, null })
#	Line 942 | Line 928 | public class CompletableFutureTest exten
928		public void testWhenComplete_exceptionalCompletion() {
929		for (ExecutionMode m : ExecutionMode.values())
930		for (boolean createIncomplete : new boolean[] { true, false })
945	–	for (Integer v1 : new Integer[] { 1, null })
931		{
932		final AtomicInteger a = new AtomicInteger(0);
933		final CFException ex = new CFException();
#	Line 1027 | Line 1012 | public class CompletableFutureTest exten
1012		public void testWhenComplete_actionFailedSourceFailed() {
1013		for (boolean createIncomplete : new boolean[] { true, false })
1014		for (ExecutionMode m : ExecutionMode.values())
1030	–	for (Integer v1 : new Integer[] { 1, null })
1015		{
1016		final AtomicInteger a = new AtomicInteger(0);
1017		final CFException ex1 = new CFException();
#	Line 1628 | Line 1612 | public class CompletableFutureTest exten
1612		rs[0].assertValue(subtract(v1, v2));
1613		rs[2].assertValue(subtract(v1, v2));
1614		rs[4].assertValue(subtract(v1, v2));
1615	<
1615	>
1616		checkCompletedNormally(f, v1);
1617		checkCompletedNormally(g, v2);
1618		}}
#	Line 2975 | Line 2959 | public class CompletableFutureTest exten
2959		checkCancelled(f);
2960		}}
2961
2962	+	/**
2963	+	* thenCompose result completes exceptionally if the result of the action does
2964	+	*/
2965	+	public void testThenCompose_actionReturnsFailingFuture() {
2966	+	for (ExecutionMode m : ExecutionMode.values())
2967	+	for (int order = 0; order < 6; order++)
2968	+	for (Integer v1 : new Integer[] { 1, null })
2969	+	{
2970	+	final CFException ex = new CFException();
2971	+	final CompletableFuture<Integer> f = new CompletableFuture<>();
2972	+	final CompletableFuture<Integer> g = new CompletableFuture<>();
2973	+	final CompletableFuture<Integer> h;
2974	+	// Test all permutations of orders
2975	+	switch (order) {
2976	+	case 0:
2977	+	assertTrue(f.complete(v1));
2978	+	assertTrue(g.completeExceptionally(ex));
2979	+	h = m.thenCompose(f, (x -> g));
2980	+	break;
2981	+	case 1:
2982	+	assertTrue(f.complete(v1));
2983	+	h = m.thenCompose(f, (x -> g));
2984	+	assertTrue(g.completeExceptionally(ex));
2985	+	break;
2986	+	case 2:
2987	+	assertTrue(g.completeExceptionally(ex));
2988	+	assertTrue(f.complete(v1));
2989	+	h = m.thenCompose(f, (x -> g));
2990	+	break;
2991	+	case 3:
2992	+	assertTrue(g.completeExceptionally(ex));
2993	+	h = m.thenCompose(f, (x -> g));
2994	+	assertTrue(f.complete(v1));
2995	+	break;
2996	+	case 4:
2997	+	h = m.thenCompose(f, (x -> g));
2998	+	assertTrue(f.complete(v1));
2999	+	assertTrue(g.completeExceptionally(ex));
3000	+	break;
3001	+	case 5:
3002	+	h = m.thenCompose(f, (x -> g));
3003	+	assertTrue(f.complete(v1));
3004	+	assertTrue(g.completeExceptionally(ex));
3005	+	break;
3006	+	default: throw new AssertionError();
3007	+	}
3008	+
3009	+	checkCompletedExceptionally(g, ex);
3010	+	checkCompletedWithWrappedException(h, ex);
3011	+	checkCompletedNormally(f, v1);
3012	+	}}
3013	+
3014		// other static methods
3015
3016		/**
#	Line 3035 | Line 3071 | public class CompletableFutureTest exten
3071		for (int i = 0; i < k; i++) {
3072		checkIncomplete(f);
3073		checkIncomplete(CompletableFuture.allOf(fs));
3074	<	if (i != k/2) {
3074	>	if (i != k / 2) {
3075		fs[i].complete(i);
3076		checkCompletedNormally(fs[i], i);
3077		} else {
#	Line 3142 | Line 3178 | public class CompletableFutureTest exten
3178		CompletableFuture<Integer> f = new CompletableFuture<>();
3179		CompletableFuture<Integer> g = new CompletableFuture<>();
3180		CompletableFuture<Integer> nullFuture = (CompletableFuture<Integer>)null;
3145	–	CompletableFuture<?> h;
3181		ThreadExecutor exec = new ThreadExecutor();
3182
3183		Runnable[] throwingActions = {
3184		() -> CompletableFuture.supplyAsync(null),
3185		() -> CompletableFuture.supplyAsync(null, exec),
3186	<	() -> CompletableFuture.supplyAsync(new IntegerSupplier(ExecutionMode.DEFAULT, 42), null),
3186	>	() -> CompletableFuture.supplyAsync(new IntegerSupplier(ExecutionMode.SYNC, 42), null),
3187
3188		() -> CompletableFuture.runAsync(null),
3189		() -> CompletableFuture.runAsync(null, exec),
#	Line 3239 | Line 3274 | public class CompletableFutureTest exten
3274		() -> CompletableFuture.anyOf(null, f),
3275
3276		() -> f.obtrudeException(null),
3277	+
3278	+	() -> CompletableFuture.delayedExecutor(1L, SECONDS, null),
3279	+	() -> CompletableFuture.delayedExecutor(1L, null, new ThreadExecutor()),
3280	+	() -> CompletableFuture.delayedExecutor(1L, null),
3281	+
3282	+	() -> f.orTimeout(1L, null),
3283	+	() -> f.completeOnTimeout(42, 1L, null),
3284	+
3285	+	() -> CompletableFuture.failedFuture(null),
3286	+	() -> CompletableFuture.failedStage(null),
3287		};
3288
3289		assertThrows(NullPointerException.class, throwingActions);
#	Line 3253 | Line 3298 | public class CompletableFutureTest exten
3298		assertSame(f, f.toCompletableFuture());
3299		}
3300
3301	+	// jdk9
3302	+
3303	+	/**
3304	+	* newIncompleteFuture returns an incomplete CompletableFuture
3305	+	*/
3306	+	public void testNewIncompleteFuture() {
3307	+	for (Integer v1 : new Integer[] { 1, null })
3308	+	{
3309	+	CompletableFuture<Integer> f = new CompletableFuture<>();
3310	+	CompletableFuture<Integer> g = f.newIncompleteFuture();
3311	+	checkIncomplete(f);
3312	+	checkIncomplete(g);
3313	+	f.complete(v1);
3314	+	checkCompletedNormally(f, v1);
3315	+	checkIncomplete(g);
3316	+	g.complete(v1);
3317	+	checkCompletedNormally(g, v1);
3318	+	assertSame(g.getClass(), CompletableFuture.class);
3319	+	}}
3320	+
3321	+	/**
3322	+	* completedStage returns a completed CompletionStage
3323	+	*/
3324	+	public void testCompletedStage() {
3325	+	AtomicInteger x = new AtomicInteger(0);
3326	+	AtomicReference<Throwable> r = new AtomicReference<Throwable>();
3327	+	CompletionStage<Integer> f = CompletableFuture.completedStage(1);
3328	+	f.whenComplete((v, e) -> {if (e != null) r.set(e); else x.set(v);});
3329	+	assertEquals(x.get(), 1);
3330	+	assertNull(r.get());
3331	+	}
3332	+
3333	+	/**
3334	+	* defaultExecutor by default returns the commonPool if
3335	+	* it supports more than one thread.
3336	+	*/
3337	+	public void testDefaultExecutor() {
3338	+	CompletableFuture<Integer> f = new CompletableFuture<>();
3339	+	Executor e = f.defaultExecutor();
3340	+	Executor c = ForkJoinPool.commonPool();
3341	+	if (ForkJoinPool.getCommonPoolParallelism() > 1)
3342	+	assertSame(e, c);
3343	+	else
3344	+	assertNotSame(e, c);
3345	+	}
3346	+
3347	+	/**
3348	+	* failedFuture returns a CompletableFuture completed
3349	+	* exceptionally with the given Exception
3350	+	*/
3351	+	public void testFailedFuture() {
3352	+	CFException ex = new CFException();
3353	+	CompletableFuture<Integer> f = CompletableFuture.failedFuture(ex);
3354	+	checkCompletedExceptionally(f, ex);
3355	+	}
3356	+
3357	+	/**
3358	+	* failedFuture(null) throws NPE
3359	+	*/
3360	+	public void testFailedFuture_null() {
3361	+	try {
3362	+	CompletableFuture<Integer> f = CompletableFuture.failedFuture(null);
3363	+	shouldThrow();
3364	+	} catch (NullPointerException success) {}
3365	+	}
3366	+
3367	+	/**
3368	+	* copy returns a CompletableFuture that is completed normally,
3369	+	* with the same value, when source is.
3370	+	*/
3371	+	public void testCopy() {
3372	+	CompletableFuture<Integer> f = new CompletableFuture<>();
3373	+	CompletableFuture<Integer> g = f.copy();
3374	+	checkIncomplete(f);
3375	+	checkIncomplete(g);
3376	+	f.complete(1);
3377	+	checkCompletedNormally(f, 1);
3378	+	checkCompletedNormally(g, 1);
3379	+	}
3380	+
3381	+	/**
3382	+	* copy returns a CompletableFuture that is completed exceptionally
3383	+	* when source is.
3384	+	*/
3385	+	public void testCopy2() {
3386	+	CompletableFuture<Integer> f = new CompletableFuture<>();
3387	+	CompletableFuture<Integer> g = f.copy();
3388	+	checkIncomplete(f);
3389	+	checkIncomplete(g);
3390	+	CFException ex = new CFException();
3391	+	f.completeExceptionally(ex);
3392	+	checkCompletedExceptionally(f, ex);
3393	+	checkCompletedWithWrappedException(g, ex);
3394	+	}
3395	+
3396	+	/**
3397	+	* minimalCompletionStage returns a CompletableFuture that is
3398	+	* completed normally, with the same value, when source is.
3399	+	*/
3400	+	public void testMinimalCompletionStage() {
3401	+	CompletableFuture<Integer> f = new CompletableFuture<>();
3402	+	CompletionStage<Integer> g = f.minimalCompletionStage();
3403	+	AtomicInteger x = new AtomicInteger(0);
3404	+	AtomicReference<Throwable> r = new AtomicReference<Throwable>();
3405	+	checkIncomplete(f);
3406	+	g.whenComplete((v, e) -> {if (e != null) r.set(e); else x.set(v);});
3407	+	f.complete(1);
3408	+	checkCompletedNormally(f, 1);
3409	+	assertEquals(x.get(), 1);
3410	+	assertNull(r.get());
3411	+	}
3412	+
3413	+	/**
3414	+	* minimalCompletionStage returns a CompletableFuture that is
3415	+	* completed exceptionally when source is.
3416	+	*/
3417	+	public void testMinimalCompletionStage2() {
3418	+	CompletableFuture<Integer> f = new CompletableFuture<>();
3419	+	CompletionStage<Integer> g = f.minimalCompletionStage();
3420	+	AtomicInteger x = new AtomicInteger(0);
3421	+	AtomicReference<Throwable> r = new AtomicReference<Throwable>();
3422	+	g.whenComplete((v, e) -> {if (e != null) r.set(e); else x.set(v);});
3423	+	checkIncomplete(f);
3424	+	CFException ex = new CFException();
3425	+	f.completeExceptionally(ex);
3426	+	checkCompletedExceptionally(f, ex);
3427	+	assertEquals(x.get(), 0);
3428	+	assertEquals(r.get().getCause(), ex);
3429	+	}
3430	+
3431	+	/**
3432	+	* failedStage returns a CompletionStage completed
3433	+	* exceptionally with the given Exception
3434	+	*/
3435	+	public void testFailedStage() {
3436	+	CFException ex = new CFException();
3437	+	CompletionStage<Integer> f = CompletableFuture.failedStage(ex);
3438	+	AtomicInteger x = new AtomicInteger(0);
3439	+	AtomicReference<Throwable> r = new AtomicReference<Throwable>();
3440	+	f.whenComplete((v, e) -> {if (e != null) r.set(e); else x.set(v);});
3441	+	assertEquals(x.get(), 0);
3442	+	assertEquals(r.get(), ex);
3443	+	}
3444	+
3445	+	/**
3446	+	* completeAsync completes with value of given supplier
3447	+	*/
3448	+	public void testCompleteAsync() {
3449	+	for (Integer v1 : new Integer[] { 1, null })
3450	+	{
3451	+	CompletableFuture<Integer> f = new CompletableFuture<>();
3452	+	f.completeAsync(() -> v1);
3453	+	f.join();
3454	+	checkCompletedNormally(f, v1);
3455	+	}}
3456	+
3457	+	/**
3458	+	* completeAsync completes exceptionally if given supplier throws
3459	+	*/
3460	+	public void testCompleteAsync2() {
3461	+	CompletableFuture<Integer> f = new CompletableFuture<>();
3462	+	CFException ex = new CFException();
3463	+	f.completeAsync(() -> {if (true) throw ex; return 1;});
3464	+	try {
3465	+	f.join();
3466	+	shouldThrow();
3467	+	} catch (CompletionException success) {}
3468	+	checkCompletedWithWrappedException(f, ex);
3469	+	}
3470	+
3471	+	/**
3472	+	* completeAsync with given executor completes with value of given supplier
3473	+	*/
3474	+	public void testCompleteAsync3() {
3475	+	for (Integer v1 : new Integer[] { 1, null })
3476	+	{
3477	+	CompletableFuture<Integer> f = new CompletableFuture<>();
3478	+	ThreadExecutor executor = new ThreadExecutor();
3479	+	f.completeAsync(() -> v1, executor);
3480	+	assertSame(v1, f.join());
3481	+	checkCompletedNormally(f, v1);
3482	+	assertEquals(1, executor.count.get());
3483	+	}}
3484	+
3485	+	/**
3486	+	* completeAsync with given executor completes exceptionally if
3487	+	* given supplier throws
3488	+	*/
3489	+	public void testCompleteAsync4() {
3490	+	CompletableFuture<Integer> f = new CompletableFuture<>();
3491	+	CFException ex = new CFException();
3492	+	ThreadExecutor executor = new ThreadExecutor();
3493	+	f.completeAsync(() -> {if (true) throw ex; return 1;}, executor);
3494	+	try {
3495	+	f.join();
3496	+	shouldThrow();
3497	+	} catch (CompletionException success) {}
3498	+	checkCompletedWithWrappedException(f, ex);
3499	+	assertEquals(1, executor.count.get());
3500	+	}
3501	+
3502	+	/**
3503	+	* orTimeout completes with TimeoutException if not complete
3504	+	*/
3505	+	public void testOrTimeout_timesOut() {
3506	+	long timeoutMillis = timeoutMillis();
3507	+	CompletableFuture<Integer> f = new CompletableFuture<>();
3508	+	long startTime = System.nanoTime();
3509	+	f.orTimeout(timeoutMillis, MILLISECONDS);
3510	+	checkCompletedWithTimeoutException(f);
3511	+	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
3512	+	}
3513	+
3514	+	/**
3515	+	* orTimeout completes normally if completed before timeout
3516	+	*/
3517	+	public void testOrTimeout_completed() {
3518	+	for (Integer v1 : new Integer[] { 1, null })
3519	+	{
3520	+	CompletableFuture<Integer> f = new CompletableFuture<>();
3521	+	CompletableFuture<Integer> g = new CompletableFuture<>();
3522	+	long startTime = System.nanoTime();
3523	+	f.complete(v1);
3524	+	f.orTimeout(LONG_DELAY_MS, MILLISECONDS);
3525	+	g.orTimeout(LONG_DELAY_MS, MILLISECONDS);
3526	+	g.complete(v1);
3527	+	checkCompletedNormally(f, v1);
3528	+	checkCompletedNormally(g, v1);
3529	+	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS / 2);
3530	+	}}
3531	+
3532	+	/**
3533	+	* completeOnTimeout completes with given value if not complete
3534	+	*/
3535	+	public void testCompleteOnTimeout_timesOut() {
3536	+	testInParallel(() -> testCompleteOnTimeout_timesOut(42),
3537	+	() -> testCompleteOnTimeout_timesOut(null));
3538	+	}
3539	+
3540	+	public void testCompleteOnTimeout_timesOut(Integer v) {
3541	+	long timeoutMillis = timeoutMillis();
3542	+	CompletableFuture<Integer> f = new CompletableFuture<>();
3543	+	long startTime = System.nanoTime();
3544	+	f.completeOnTimeout(v, timeoutMillis, MILLISECONDS);
3545	+	assertSame(v, f.join());
3546	+	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
3547	+	f.complete(99);         // should have no effect
3548	+	checkCompletedNormally(f, v);
3549	+	}
3550	+
3551	+	/**
3552	+	* completeOnTimeout has no effect if completed within timeout
3553	+	*/
3554	+	public void testCompleteOnTimeout_completed() {
3555	+	for (Integer v1 : new Integer[] { 1, null })
3556	+	{
3557	+	CompletableFuture<Integer> f = new CompletableFuture<>();
3558	+	CompletableFuture<Integer> g = new CompletableFuture<>();
3559	+	long startTime = System.nanoTime();
3560	+	f.complete(v1);
3561	+	f.completeOnTimeout(-1, LONG_DELAY_MS, MILLISECONDS);
3562	+	g.completeOnTimeout(-1, LONG_DELAY_MS, MILLISECONDS);
3563	+	g.complete(v1);
3564	+	checkCompletedNormally(f, v1);
3565	+	checkCompletedNormally(g, v1);
3566	+	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS / 2);
3567	+	}}
3568	+
3569	+	/**
3570	+	* delayedExecutor returns an executor that delays submission
3571	+	*/
3572	+	public void testDelayedExecutor() {
3573	+	testInParallel(() -> testDelayedExecutor(null, null),
3574	+	() -> testDelayedExecutor(null, 1),
3575	+	() -> testDelayedExecutor(new ThreadExecutor(), 1),
3576	+	() -> testDelayedExecutor(new ThreadExecutor(), 1));
3577	+	}
3578	+
3579	+	public void testDelayedExecutor(Executor executor, Integer v) throws Exception {
3580	+	long timeoutMillis = timeoutMillis();
3581	+	// Use an "unreasonably long" long timeout to catch lingering threads
3582	+	long longTimeoutMillis = 1000 * 60 * 60 * 24;
3583	+	final Executor delayer, longDelayer;
3584	+	if (executor == null) {
3585	+	delayer = CompletableFuture.delayedExecutor(timeoutMillis, MILLISECONDS);
3586	+	longDelayer = CompletableFuture.delayedExecutor(longTimeoutMillis, MILLISECONDS);
3587	+	} else {
3588	+	delayer = CompletableFuture.delayedExecutor(timeoutMillis, MILLISECONDS, executor);
3589	+	longDelayer = CompletableFuture.delayedExecutor(longTimeoutMillis, MILLISECONDS, executor);
3590	+	}
3591	+	long startTime = System.nanoTime();
3592	+	CompletableFuture<Integer> f =
3593	+	CompletableFuture.supplyAsync(() -> v, delayer);
3594	+	CompletableFuture<Integer> g =
3595	+	CompletableFuture.supplyAsync(() -> v, longDelayer);
3596	+
3597	+	assertNull(g.getNow(null));
3598	+
3599	+	assertSame(v, f.get(LONG_DELAY_MS, MILLISECONDS));
3600	+	long millisElapsed = millisElapsedSince(startTime);
3601	+	assertTrue(millisElapsed >= timeoutMillis);
3602	+	assertTrue(millisElapsed < LONG_DELAY_MS / 2);
3603	+
3604	+	checkCompletedNormally(f, v);
3605	+
3606	+	checkIncomplete(g);
3607	+	assertTrue(g.cancel(true));
3608	+	}
3609	+
3610		//--- tests of implementation details; not part of official tck ---
3611
3612		Object resultOf(CompletableFuture<?> f) {
#	Line 3343 | Line 3697 | public class CompletableFutureTest exten
3697		}
3698		}}
3699
3700	+	/**
3701	+	* Minimal completion stages throw UOE for all non-CompletionStage methods
3702	+	*/
3703	+	public void testMinimalCompletionStage_minimality() {
3704	+	if (!testImplementationDetails) return;
3705	+	Function<Method, String> toSignature =
3706	+	(method) -> method.getName() + Arrays.toString(method.getParameterTypes());
3707	+	Predicate<Method> isNotStatic =
3708	+	(method) -> (method.getModifiers() & Modifier.STATIC) == 0;
3709	+	List<Method> minimalMethods =
3710	+	Stream.of(Object.class, CompletionStage.class)
3711	+	.flatMap((klazz) -> Stream.of(klazz.getMethods()))
3712	+	.filter(isNotStatic)
3713	+	.collect(Collectors.toList());
3714	+	// Methods from CompletableFuture permitted NOT to throw UOE
3715	+	String[] signatureWhitelist = {
3716	+	"newIncompleteFuture[]",
3717	+	"defaultExecutor[]",
3718	+	"minimalCompletionStage[]",
3719	+	"copy[]",
3720	+	};
3721	+	Set<String> permittedMethodSignatures =
3722	+	Stream.concat(minimalMethods.stream().map(toSignature),
3723	+	Stream.of(signatureWhitelist))
3724	+	.collect(Collectors.toSet());
3725	+	List<Method> allMethods = Stream.of(CompletableFuture.class.getMethods())
3726	+	.filter(isNotStatic)
3727	+	.filter((method) -> !permittedMethodSignatures.contains(toSignature.apply(method)))
3728	+	.collect(Collectors.toList());
3729	+
3730	+	CompletionStage<Integer> minimalStage =
3731	+	new CompletableFuture<Integer>().minimalCompletionStage();
3732	+
3733	+	List<Method> bugs = new ArrayList<>();
3734	+	for (Method method : allMethods) {
3735	+	Class<?>[] parameterTypes = method.getParameterTypes();
3736	+	Object[] args = new Object[parameterTypes.length];
3737	+	// Manufacture boxed primitives for primitive params
3738	+	for (int i = 0; i < args.length; i++) {
3739	+	Class<?> type = parameterTypes[i];
3740	+	if (parameterTypes[i] == boolean.class)
3741	+	args[i] = false;
3742	+	else if (parameterTypes[i] == int.class)
3743	+	args[i] = 0;
3744	+	else if (parameterTypes[i] == long.class)
3745	+	args[i] = 0L;
3746	+	}
3747	+	try {
3748	+	method.invoke(minimalStage, args);
3749	+	bugs.add(method);
3750	+	}
3751	+	catch (java.lang.reflect.InvocationTargetException expected) {
3752	+	if (! (expected.getCause() instanceof UnsupportedOperationException)) {
3753	+	bugs.add(method);
3754	+	// expected.getCause().printStackTrace();
3755	+	}
3756	+	}
3757	+	catch (ReflectiveOperationException bad) { throw new Error(bad); }
3758	+	}
3759	+	if (!bugs.isEmpty())
3760	+	throw new Error("Methods did not throw UOE: " + bugs.toString());
3761	+	}
3762	+
3763	+	//     static <U> U join(CompletionStage<U> stage) {
3764	+	//         CompletableFuture<U> f = new CompletableFuture<>();
3765	+	//         stage.whenComplete((v, ex) -> {
3766	+	//             if (ex != null) f.completeExceptionally(ex); else f.complete(v);
3767	+	//         });
3768	+	//         return f.join();
3769	+	//     }
3770	+
3771	+	//     static <U> boolean isDone(CompletionStage<U> stage) {
3772	+	//         CompletableFuture<U> f = new CompletableFuture<>();
3773	+	//         stage.whenComplete((v, ex) -> {
3774	+	//             if (ex != null) f.completeExceptionally(ex); else f.complete(v);
3775	+	//         });
3776	+	//         return f.isDone();
3777	+	//     }
3778	+
3779	+	//     static <U> U join2(CompletionStage<U> stage) {
3780	+	//         return stage.toCompletableFuture().copy().join();
3781	+	//     }
3782	+
3783	+	//     static <U> boolean isDone2(CompletionStage<U> stage) {
3784	+	//         return stage.toCompletableFuture().copy().isDone();
3785	+	//     }
3786	+
3787		}

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