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Comparing jsr166/src/test/tck/CompletableFutureTest.java (file contents):
Revision 1.92 by jsr166, Tue Jun 17 20:50:01 2014 UTC vs.
Revision 1.123 by jsr166, Tue Sep 8 19:45:35 2015 UTC

#	Line 5 | Line 5
5		* http://creativecommons.org/publicdomain/zero/1.0/
6		*/
7
8	<	import junit.framework.*;
8	>	import static java.util.concurrent.TimeUnit.MILLISECONDS;
9	>	import static java.util.concurrent.TimeUnit.SECONDS;
10	>
11	>	import java.lang.reflect.Method;
12	>	import java.lang.reflect.Modifier;
13	>
14	>	import java.util.stream.Collectors;
15	>	import java.util.stream.Stream;
16	>
17	>	import java.util.ArrayList;
18	>	import java.util.Arrays;
19	>	import java.util.List;
20	>	import java.util.Objects;
21	>	import java.util.Set;
22		import java.util.concurrent.Callable;
10	–	import java.util.concurrent.Executor;
11	–	import java.util.concurrent.ExecutorService;
12	–	import java.util.concurrent.Executors;
23		import java.util.concurrent.CancellationException;
14	–	import java.util.concurrent.CountDownLatch;
15	–	import java.util.concurrent.ExecutionException;
16	–	import java.util.concurrent.Future;
24		import java.util.concurrent.CompletableFuture;
25		import java.util.concurrent.CompletionException;
26		import java.util.concurrent.CompletionStage;
27	+	import java.util.concurrent.ExecutionException;
28	+	import java.util.concurrent.Executor;
29		import java.util.concurrent.ForkJoinPool;
30		import java.util.concurrent.ForkJoinTask;
31		import java.util.concurrent.TimeoutException;
32	+	import java.util.concurrent.TimeUnit;
33		import java.util.concurrent.atomic.AtomicInteger;
34	<	import static java.util.concurrent.TimeUnit.MILLISECONDS;
25	<	import static java.util.concurrent.TimeUnit.SECONDS;
26	<	import java.util.*;
27	<	import java.util.function.Supplier;
28	<	import java.util.function.Consumer;
34	>	import java.util.concurrent.atomic.AtomicReference;
35		import java.util.function.BiConsumer;
30	–	import java.util.function.Function;
36		import java.util.function.BiFunction;
37	+	import java.util.function.Consumer;
38	+	import java.util.function.Function;
39	+	import java.util.function.Supplier;
40	+
41	+	import junit.framework.Test;
42	+	import junit.framework.TestSuite;
43
44		public class CompletableFutureTest extends JSR166TestCase {
45
46		public static void main(String[] args) {
47	<	junit.textui.TestRunner.run(suite());
47	>	main(suite(), args);
48		}
49		public static Test suite() {
50		return new TestSuite(CompletableFutureTest.class);
#	Line 44 | Line 55 | public class CompletableFutureTest exten
55		void checkIncomplete(CompletableFuture<?> f) {
56		assertFalse(f.isDone());
57		assertFalse(f.isCancelled());
58	<	assertTrue(f.toString().contains("[Not completed]"));
58	>	assertTrue(f.toString().contains("Not completed"));
59		try {
60		assertNull(f.getNow(null));
61		} catch (Throwable fail) { threadUnexpectedException(fail); }
#	Line 57 | Line 68 | public class CompletableFutureTest exten
68		}
69
70		<T> void checkCompletedNormally(CompletableFuture<T> f, T value) {
71	<	try {
72	<	assertEquals(value, f.get(LONG_DELAY_MS, MILLISECONDS));
62	<	} catch (Throwable fail) { threadUnexpectedException(fail); }
71	>	checkTimedGet(f, value);
72	>
73		try {
74		assertEquals(value, f.join());
75		} catch (Throwable fail) { threadUnexpectedException(fail); }
#	Line 75 | Line 85 | public class CompletableFutureTest exten
85		assertTrue(f.toString().contains("[Completed normally]"));
86		}
87
88	<	void checkCompletedWithWrappedCFException(CompletableFuture<?> f) {
89	<	try {
90	<	f.get(LONG_DELAY_MS, MILLISECONDS);
91	<	shouldThrow();
92	<	} catch (ExecutionException success) {
93	<	assertTrue(success.getCause() instanceof CFException);
94	<	} catch (Throwable fail) { threadUnexpectedException(fail); }
95	<	try {
96	<	f.join();
97	<	shouldThrow();
98	<	} catch (CompletionException success) {
99	<	assertTrue(success.getCause() instanceof CFException);
100	<	}
101	<	try {
102	<	f.getNow(null);
103	<	shouldThrow();
104	<	} catch (CompletionException success) {
95	<	assertTrue(success.getCause() instanceof CFException);
88	>	/**
89	>	* Returns the "raw" internal exceptional completion of f,
90	>	* without any additional wrapping with CompletionException.
91	>	*/
92	>	<U> Throwable exceptionalCompletion(CompletableFuture<U> f) {
93	>	// handle (and whenComplete) can distinguish between "direct"
94	>	// and "wrapped" exceptional completion
95	>	return f.handle((U u, Throwable t) -> t).join();
96	>	}
97	>
98	>	void checkCompletedExceptionally(CompletableFuture<?> f,
99	>	boolean wrapped,
100	>	Consumer<Throwable> checker) {
101	>	Throwable cause = exceptionalCompletion(f);
102	>	if (wrapped) {
103	>	assertTrue(cause instanceof CompletionException);
104	>	cause = cause.getCause();
105		}
106	<	try {
98	<	f.get();
99	<	shouldThrow();
100	<	} catch (ExecutionException success) {
101	<	assertTrue(success.getCause() instanceof CFException);
102	<	} catch (Throwable fail) { threadUnexpectedException(fail); }
103	<	assertTrue(f.isDone());
104	<	assertFalse(f.isCancelled());
105	<	assertTrue(f.toString().contains("[Completed exceptionally]"));
106	<	}
106	>	checker.accept(cause);
107
108	<	<U> void checkCompletedExceptionallyWithRootCause(CompletableFuture<U> f,
109	<	Throwable ex) {
108	>	long startTime = System.nanoTime();
109		try {
110		f.get(LONG_DELAY_MS, MILLISECONDS);
111		shouldThrow();
112		} catch (ExecutionException success) {
113	<	assertSame(ex, success.getCause());
113	>	assertSame(cause, success.getCause());
114		} catch (Throwable fail) { threadUnexpectedException(fail); }
115	+	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS / 2);
116	+
117		try {
118		f.join();
119		shouldThrow();
120		} catch (CompletionException success) {
121	<	assertSame(ex, success.getCause());
122	<	}
121	>	assertSame(cause, success.getCause());
122	>	} catch (Throwable fail) { threadUnexpectedException(fail); }
123	>
124		try {
125		f.getNow(null);
126		shouldThrow();
127		} catch (CompletionException success) {
128	<	assertSame(ex, success.getCause());
129	<	}
128	>	assertSame(cause, success.getCause());
129	>	} catch (Throwable fail) { threadUnexpectedException(fail); }
130	>
131		try {
132		f.get();
133		shouldThrow();
134		} catch (ExecutionException success) {
135	<	assertSame(ex, success.getCause());
135	>	assertSame(cause, success.getCause());
136		} catch (Throwable fail) { threadUnexpectedException(fail); }
137
135	–	assertTrue(f.isDone());
138		assertFalse(f.isCancelled());
139	+	assertTrue(f.isDone());
140	+	assertTrue(f.isCompletedExceptionally());
141		assertTrue(f.toString().contains("[Completed exceptionally]"));
142		}
143
144	<	<U> void checkCompletedWithWrappedException(CompletableFuture<U> f,
145	<	Throwable ex) {
146	<	checkCompletedExceptionallyWithRootCause(f, ex);
143	<	try {
144	<	CompletableFuture<Throwable> spy = f.handle
145	<	((U u, Throwable t) -> t);
146	<	assertTrue(spy.join() instanceof CompletionException);
147	<	assertSame(ex, spy.join().getCause());
148	<	} catch (Throwable fail) { threadUnexpectedException(fail); }
144	>	void checkCompletedWithWrappedCFException(CompletableFuture<?> f) {
145	>	checkCompletedExceptionally(f, true,
146	>	(t) -> assertTrue(t instanceof CFException));
147		}
148
149	<	<U> void checkCompletedExceptionally(CompletableFuture<U> f, Throwable ex) {
150	<	checkCompletedExceptionallyWithRootCause(f, ex);
151	<	try {
152	<	CompletableFuture<Throwable> spy = f.handle
153	<	((U u, Throwable t) -> t);
154	<	assertSame(ex, spy.join());
155	<	} catch (Throwable fail) { threadUnexpectedException(fail); }
149	>	void checkCompletedWithWrappedCancellationException(CompletableFuture<?> f) {
150	>	checkCompletedExceptionally(f, true,
151	>	(t) -> assertTrue(t instanceof CancellationException));
152	>	}
153	>
154	>	void checkCompletedWithTimeoutException(CompletableFuture<?> f) {
155	>	checkCompletedExceptionally(f, false,
156	>	(t) -> assertTrue(t instanceof TimeoutException));
157	>	}
158	>
159	>	void checkCompletedWithWrappedException(CompletableFuture<?> f,
160	>	Throwable ex) {
161	>	checkCompletedExceptionally(f, true, (t) -> assertSame(t, ex));
162	>	}
163	>
164	>	void checkCompletedExceptionally(CompletableFuture<?> f, Throwable ex) {
165	>	checkCompletedExceptionally(f, false, (t) -> assertSame(t, ex));
166		}
167
168		void checkCancelled(CompletableFuture<?> f) {
169	+	long startTime = System.nanoTime();
170		try {
171		f.get(LONG_DELAY_MS, MILLISECONDS);
172		shouldThrow();
173		} catch (CancellationException success) {
174		} catch (Throwable fail) { threadUnexpectedException(fail); }
175	+	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS / 2);
176	+
177		try {
178		f.join();
179		shouldThrow();
#	Line 176 | Line 187 | public class CompletableFutureTest exten
187		shouldThrow();
188		} catch (CancellationException success) {
189		} catch (Throwable fail) { threadUnexpectedException(fail); }
179	–	assertTrue(f.isDone());
180	–	assertTrue(f.isCompletedExceptionally());
181	–	assertTrue(f.isCancelled());
182	–	assertTrue(f.toString().contains("[Completed exceptionally]"));
183	–	}
190
191	<	void checkCompletedWithWrappedCancellationException(CompletableFuture<?> f) {
192	<	try {
187	<	f.get(LONG_DELAY_MS, MILLISECONDS);
188	<	shouldThrow();
189	<	} catch (ExecutionException success) {
190	<	assertTrue(success.getCause() instanceof CancellationException);
191	<	} catch (Throwable fail) { threadUnexpectedException(fail); }
192	<	try {
193	<	f.join();
194	<	shouldThrow();
195	<	} catch (CompletionException success) {
196	<	assertTrue(success.getCause() instanceof CancellationException);
197	<	}
198	<	try {
199	<	f.getNow(null);
200	<	shouldThrow();
201	<	} catch (CompletionException success) {
202	<	assertTrue(success.getCause() instanceof CancellationException);
203	<	}
204	<	try {
205	<	f.get();
206	<	shouldThrow();
207	<	} catch (ExecutionException success) {
208	<	assertTrue(success.getCause() instanceof CancellationException);
209	<	} catch (Throwable fail) { threadUnexpectedException(fail); }
191	>	assertTrue(exceptionalCompletion(f) instanceof CancellationException);
192	>
193		assertTrue(f.isDone());
211	–	assertFalse(f.isCancelled());
194		assertTrue(f.isCompletedExceptionally());
195	+	assertTrue(f.isCancelled());
196		assertTrue(f.toString().contains("[Completed exceptionally]"));
197		}
198
#	Line 257 | Line 240 | public class CompletableFutureTest exten
240		{
241		CompletableFuture<Integer> f = new CompletableFuture<>();
242		checkIncomplete(f);
243	<	assertTrue(f.cancel(true));
244	<	assertTrue(f.cancel(true));
243	>	assertTrue(f.cancel(mayInterruptIfRunning));
244	>	assertTrue(f.cancel(mayInterruptIfRunning));
245	>	assertTrue(f.cancel(!mayInterruptIfRunning));
246		checkCancelled(f);
247		}}
248
#	Line 530 | Line 514 | public class CompletableFutureTest exten
514		}
515		}
516
533	–
517		class CompletableFutureInc extends CheckedIntegerAction
518		implements Function<Integer, CompletableFuture<Integer>>
519		{
#	Line 569 | Line 552 | public class CompletableFutureTest exten
552		}
553		}
554
555	+	static final boolean defaultExecutorIsCommonPool
556	+	= ForkJoinPool.getCommonPoolParallelism() > 1;
557	+
558		/**
559		* Permits the testing of parallel code for the 3 different
560		* execution modes without copy/pasting all the test methods.
561		*/
562		enum ExecutionMode {
563	<	DEFAULT {
563	>	SYNC {
564		public void checkExecutionMode() {
565		assertFalse(ThreadExecutor.startedCurrentThread());
566		assertNull(ForkJoinTask.getPool());
#	Line 650 | Line 636 | public class CompletableFutureTest exten
636
637		ASYNC {
638		public void checkExecutionMode() {
639	<	assertSame(ForkJoinPool.commonPool(),
640	<	ForkJoinTask.getPool());
639	>	assertEquals(defaultExecutorIsCommonPool,
640	>	(ForkJoinPool.commonPool() == ForkJoinTask.getPool()));
641		}
642		public CompletableFuture<Void> runAsync(Runnable a) {
643		return CompletableFuture.runAsync(a);
#	Line 875 | Line 861 | public class CompletableFutureTest exten
861		if (!createIncomplete) f.completeExceptionally(ex);
862		final CompletableFuture<Integer> g = f.exceptionally
863		((Throwable t) -> {
864	<	ExecutionMode.DEFAULT.checkExecutionMode();
864	>	ExecutionMode.SYNC.checkExecutionMode();
865		threadAssertSame(t, ex);
866		a.getAndIncrement();
867		return v1;
#	Line 888 | Line 874 | public class CompletableFutureTest exten
874
875		public void testExceptionally_exceptionalCompletionActionFailed() {
876		for (boolean createIncomplete : new boolean[] { true, false })
891	–	for (Integer v1 : new Integer[] { 1, null })
877		{
878		final AtomicInteger a = new AtomicInteger(0);
879		final CFException ex1 = new CFException();
#	Line 897 | Line 882 | public class CompletableFutureTest exten
882		if (!createIncomplete) f.completeExceptionally(ex1);
883		final CompletableFuture<Integer> g = f.exceptionally
884		((Throwable t) -> {
885	<	ExecutionMode.DEFAULT.checkExecutionMode();
885	>	ExecutionMode.SYNC.checkExecutionMode();
886		threadAssertSame(t, ex1);
887		a.getAndIncrement();
888		throw ex2;
#	Line 942 | Line 927 | public class CompletableFutureTest exten
927		public void testWhenComplete_exceptionalCompletion() {
928		for (ExecutionMode m : ExecutionMode.values())
929		for (boolean createIncomplete : new boolean[] { true, false })
945	–	for (Integer v1 : new Integer[] { 1, null })
930		{
931		final AtomicInteger a = new AtomicInteger(0);
932		final CFException ex = new CFException();
#	Line 1027 | Line 1011 | public class CompletableFutureTest exten
1011		public void testWhenComplete_actionFailedSourceFailed() {
1012		for (boolean createIncomplete : new boolean[] { true, false })
1013		for (ExecutionMode m : ExecutionMode.values())
1030	–	for (Integer v1 : new Integer[] { 1, null })
1014		{
1015		final AtomicInteger a = new AtomicInteger(0);
1016		final CFException ex1 = new CFException();
#	Line 1600 | Line 1583 | public class CompletableFutureTest exten
1583		{
1584		final CompletableFuture<Integer> f = new CompletableFuture<>();
1585		final CompletableFuture<Integer> g = new CompletableFuture<>();
1586	<	final SubtractFunction r1 = new SubtractFunction(m);
1587	<	final SubtractFunction r2 = new SubtractFunction(m);
1605	<	final SubtractFunction r3 = new SubtractFunction(m);
1586	>	final SubtractFunction[] rs = new SubtractFunction[6];
1587	>	for (int i = 0; i < rs.length; i++) rs[i] = new SubtractFunction(m);
1588
1589		final CompletableFuture<Integer> fst =  fFirst ? f : g;
1590		final CompletableFuture<Integer> snd = !fFirst ? f : g;
1591		final Integer w1 =  fFirst ? v1 : v2;
1592		final Integer w2 = !fFirst ? v1 : v2;
1593
1594	<	final CompletableFuture<Integer> h1 = m.thenCombine(f, g, r1);
1594	>	final CompletableFuture<Integer> h0 = m.thenCombine(f, g, rs[0]);
1595	>	final CompletableFuture<Integer> h1 = m.thenCombine(fst, fst, rs[1]);
1596		assertTrue(fst.complete(w1));
1597	<	final CompletableFuture<Integer> h2 = m.thenCombine(f, g, r2);
1598	<	checkIncomplete(h1);
1599	<	checkIncomplete(h2);
1600	<	r1.assertNotInvoked();
1601	<	r2.assertNotInvoked();
1597	>	final CompletableFuture<Integer> h2 = m.thenCombine(f, g, rs[2]);
1598	>	final CompletableFuture<Integer> h3 = m.thenCombine(fst, fst, rs[3]);
1599	>	checkIncomplete(h0); rs[0].assertNotInvoked();
1600	>	checkIncomplete(h2); rs[2].assertNotInvoked();
1601	>	checkCompletedNormally(h1, subtract(w1, w1));
1602	>	checkCompletedNormally(h3, subtract(w1, w1));
1603	>	rs[1].assertValue(subtract(w1, w1));
1604	>	rs[3].assertValue(subtract(w1, w1));
1605		assertTrue(snd.complete(w2));
1606	<	final CompletableFuture<Integer> h3 = m.thenCombine(f, g, r3);
1606	>	final CompletableFuture<Integer> h4 = m.thenCombine(f, g, rs[4]);
1607
1608	<	checkCompletedNormally(h1, subtract(v1, v2));
1608	>	checkCompletedNormally(h0, subtract(v1, v2));
1609		checkCompletedNormally(h2, subtract(v1, v2));
1610	<	checkCompletedNormally(h3, subtract(v1, v2));
1611	<	r1.assertValue(subtract(v1, v2));
1612	<	r2.assertValue(subtract(v1, v2));
1613	<	r3.assertValue(subtract(v1, v2));
1610	>	checkCompletedNormally(h4, subtract(v1, v2));
1611	>	rs[0].assertValue(subtract(v1, v2));
1612	>	rs[2].assertValue(subtract(v1, v2));
1613	>	rs[4].assertValue(subtract(v1, v2));
1614	>
1615		checkCompletedNormally(f, v1);
1616		checkCompletedNormally(g, v2);
1617		}}
#	Line 2971 | Line 2958 | public class CompletableFutureTest exten
2958		checkCancelled(f);
2959		}}
2960
2961	+	/**
2962	+	* thenCompose result completes exceptionally if the result of the action does
2963	+	*/
2964	+	public void testThenCompose_actionReturnsFailingFuture() {
2965	+	for (ExecutionMode m : ExecutionMode.values())
2966	+	for (int order = 0; order < 6; order++)
2967	+	for (Integer v1 : new Integer[] { 1, null })
2968	+	{
2969	+	final CFException ex = new CFException();
2970	+	final CompletableFuture<Integer> f = new CompletableFuture<>();
2971	+	final CompletableFuture<Integer> g = new CompletableFuture<>();
2972	+	final CompletableFuture<Integer> h;
2973	+	// Test all permutations of orders
2974	+	switch (order) {
2975	+	case 0:
2976	+	assertTrue(f.complete(v1));
2977	+	assertTrue(g.completeExceptionally(ex));
2978	+	h = m.thenCompose(f, (x -> g));
2979	+	break;
2980	+	case 1:
2981	+	assertTrue(f.complete(v1));
2982	+	h = m.thenCompose(f, (x -> g));
2983	+	assertTrue(g.completeExceptionally(ex));
2984	+	break;
2985	+	case 2:
2986	+	assertTrue(g.completeExceptionally(ex));
2987	+	assertTrue(f.complete(v1));
2988	+	h = m.thenCompose(f, (x -> g));
2989	+	break;
2990	+	case 3:
2991	+	assertTrue(g.completeExceptionally(ex));
2992	+	h = m.thenCompose(f, (x -> g));
2993	+	assertTrue(f.complete(v1));
2994	+	break;
2995	+	case 4:
2996	+	h = m.thenCompose(f, (x -> g));
2997	+	assertTrue(f.complete(v1));
2998	+	assertTrue(g.completeExceptionally(ex));
2999	+	break;
3000	+	case 5:
3001	+	h = m.thenCompose(f, (x -> g));
3002	+	assertTrue(f.complete(v1));
3003	+	assertTrue(g.completeExceptionally(ex));
3004	+	break;
3005	+	default: throw new AssertionError();
3006	+	}
3007	+
3008	+	checkCompletedExceptionally(g, ex);
3009	+	checkCompletedWithWrappedException(h, ex);
3010	+	checkCompletedNormally(f, v1);
3011	+	}}
3012	+
3013		// other static methods
3014
3015		/**
#	Line 3031 | Line 3070 | public class CompletableFutureTest exten
3070		for (int i = 0; i < k; i++) {
3071		checkIncomplete(f);
3072		checkIncomplete(CompletableFuture.allOf(fs));
3073	<	if (i != k/2) {
3073	>	if (i != k / 2) {
3074		fs[i].complete(i);
3075		checkCompletedNormally(fs[i], i);
3076		} else {
#	Line 3138 | Line 3177 | public class CompletableFutureTest exten
3177		CompletableFuture<Integer> f = new CompletableFuture<>();
3178		CompletableFuture<Integer> g = new CompletableFuture<>();
3179		CompletableFuture<Integer> nullFuture = (CompletableFuture<Integer>)null;
3141	–	CompletableFuture<?> h;
3180		ThreadExecutor exec = new ThreadExecutor();
3181
3182		Runnable[] throwingActions = {
3183		() -> CompletableFuture.supplyAsync(null),
3184		() -> CompletableFuture.supplyAsync(null, exec),
3185	<	() -> CompletableFuture.supplyAsync(new IntegerSupplier(ExecutionMode.DEFAULT, 42), null),
3185	>	() -> CompletableFuture.supplyAsync(new IntegerSupplier(ExecutionMode.SYNC, 42), null),
3186
3187		() -> CompletableFuture.runAsync(null),
3188		() -> CompletableFuture.runAsync(null, exec),
#	Line 3235 | Line 3273 | public class CompletableFutureTest exten
3273		() -> CompletableFuture.anyOf(null, f),
3274
3275		() -> f.obtrudeException(null),
3276	+
3277	+	() -> CompletableFuture.delayedExecutor(1L, SECONDS, null),
3278	+	() -> CompletableFuture.delayedExecutor(1L, null, new ThreadExecutor()),
3279	+	() -> CompletableFuture.delayedExecutor(1L, null),
3280	+
3281	+	() -> f.orTimeout(1L, null),
3282	+	() -> f.completeOnTimeout(42, 1L, null),
3283	+
3284	+	() -> CompletableFuture.failedFuture(null),
3285	+	() -> CompletableFuture.failedStage(null),
3286		};
3287
3288		assertThrows(NullPointerException.class, throwingActions);
#	Line 3249 | Line 3297 | public class CompletableFutureTest exten
3297		assertSame(f, f.toCompletableFuture());
3298		}
3299
3300	+	// jdk9
3301	+
3302	+	/**
3303	+	* newIncompleteFuture returns an incomplete CompletableFuture
3304	+	*/
3305	+	public void testNewIncompleteFuture() {
3306	+	for (Integer v1 : new Integer[] { 1, null })
3307	+	{
3308	+	CompletableFuture<Integer> f = new CompletableFuture<>();
3309	+	CompletableFuture<Integer> g = f.newIncompleteFuture();
3310	+	checkIncomplete(f);
3311	+	checkIncomplete(g);
3312	+	f.complete(v1);
3313	+	checkCompletedNormally(f, v1);
3314	+	checkIncomplete(g);
3315	+	g.complete(v1);
3316	+	checkCompletedNormally(g, v1);
3317	+	assertSame(g.getClass(), CompletableFuture.class);
3318	+	}}
3319	+
3320	+	/**
3321	+	* completedStage returns a completed CompletionStage
3322	+	*/
3323	+	public void testCompletedStage() {
3324	+	AtomicInteger x = new AtomicInteger(0);
3325	+	AtomicReference<Throwable> r = new AtomicReference<Throwable>();
3326	+	CompletionStage<Integer> f = CompletableFuture.completedStage(1);
3327	+	f.whenComplete((v, e) -> {if (e != null) r.set(e); else x.set(v);});
3328	+	assertEquals(x.get(), 1);
3329	+	assertNull(r.get());
3330	+	}
3331	+
3332	+	/**
3333	+	* defaultExecutor by default returns the commonPool if
3334	+	* it supports more than one thread.
3335	+	*/
3336	+	public void testDefaultExecutor() {
3337	+	CompletableFuture<Integer> f = new CompletableFuture<>();
3338	+	Executor e = f.defaultExecutor();
3339	+	Executor c = ForkJoinPool.commonPool();
3340	+	if (ForkJoinPool.getCommonPoolParallelism() > 1)
3341	+	assertSame(e, c);
3342	+	else
3343	+	assertNotSame(e, c);
3344	+	}
3345	+
3346	+	/**
3347	+	* failedFuture returns a CompletableFuture completed
3348	+	* exceptionally with the given Exception
3349	+	*/
3350	+	public void testFailedFuture() {
3351	+	CFException ex = new CFException();
3352	+	CompletableFuture<Integer> f = CompletableFuture.failedFuture(ex);
3353	+	checkCompletedExceptionally(f, ex);
3354	+	}
3355	+
3356	+	/**
3357	+	* failedFuture(null) throws NPE
3358	+	*/
3359	+	public void testFailedFuture_null() {
3360	+	try {
3361	+	CompletableFuture<Integer> f = CompletableFuture.failedFuture(null);
3362	+	shouldThrow();
3363	+	} catch (NullPointerException success) {}
3364	+	}
3365	+
3366	+	/**
3367	+	* copy returns a CompletableFuture that is completed normally,
3368	+	* with the same value, when source is.
3369	+	*/
3370	+	public void testCopy() {
3371	+	CompletableFuture<Integer> f = new CompletableFuture<>();
3372	+	CompletableFuture<Integer> g = f.copy();
3373	+	checkIncomplete(f);
3374	+	checkIncomplete(g);
3375	+	f.complete(1);
3376	+	checkCompletedNormally(f, 1);
3377	+	checkCompletedNormally(g, 1);
3378	+	}
3379	+
3380	+	/**
3381	+	* copy returns a CompletableFuture that is completed exceptionally
3382	+	* when source is.
3383	+	*/
3384	+	public void testCopy2() {
3385	+	CompletableFuture<Integer> f = new CompletableFuture<>();
3386	+	CompletableFuture<Integer> g = f.copy();
3387	+	checkIncomplete(f);
3388	+	checkIncomplete(g);
3389	+	CFException ex = new CFException();
3390	+	f.completeExceptionally(ex);
3391	+	checkCompletedExceptionally(f, ex);
3392	+	checkCompletedWithWrappedException(g, ex);
3393	+	}
3394	+
3395	+	/**
3396	+	* minimalCompletionStage returns a CompletableFuture that is
3397	+	* completed normally, with the same value, when source is.
3398	+	*/
3399	+	public void testMinimalCompletionStage() {
3400	+	CompletableFuture<Integer> f = new CompletableFuture<>();
3401	+	CompletionStage<Integer> g = f.minimalCompletionStage();
3402	+	AtomicInteger x = new AtomicInteger(0);
3403	+	AtomicReference<Throwable> r = new AtomicReference<Throwable>();
3404	+	checkIncomplete(f);
3405	+	g.whenComplete((v, e) -> {if (e != null) r.set(e); else x.set(v);});
3406	+	f.complete(1);
3407	+	checkCompletedNormally(f, 1);
3408	+	assertEquals(x.get(), 1);
3409	+	assertNull(r.get());
3410	+	}
3411	+
3412	+	/**
3413	+	* minimalCompletionStage returns a CompletableFuture that is
3414	+	* completed exceptionally when source is.
3415	+	*/
3416	+	public void testMinimalCompletionStage2() {
3417	+	CompletableFuture<Integer> f = new CompletableFuture<>();
3418	+	CompletionStage<Integer> g = f.minimalCompletionStage();
3419	+	AtomicInteger x = new AtomicInteger(0);
3420	+	AtomicReference<Throwable> r = new AtomicReference<Throwable>();
3421	+	g.whenComplete((v, e) -> {if (e != null) r.set(e); else x.set(v);});
3422	+	checkIncomplete(f);
3423	+	CFException ex = new CFException();
3424	+	f.completeExceptionally(ex);
3425	+	checkCompletedExceptionally(f, ex);
3426	+	assertEquals(x.get(), 0);
3427	+	assertEquals(r.get().getCause(), ex);
3428	+	}
3429	+
3430	+	/**
3431	+	* failedStage returns a CompletionStage completed
3432	+	* exceptionally with the given Exception
3433	+	*/
3434	+	public void testFailedStage() {
3435	+	CFException ex = new CFException();
3436	+	CompletionStage<Integer> f = CompletableFuture.failedStage(ex);
3437	+	AtomicInteger x = new AtomicInteger(0);
3438	+	AtomicReference<Throwable> r = new AtomicReference<Throwable>();
3439	+	f.whenComplete((v, e) -> {if (e != null) r.set(e); else x.set(v);});
3440	+	assertEquals(x.get(), 0);
3441	+	assertEquals(r.get(), ex);
3442	+	}
3443	+
3444	+	/**
3445	+	* completeAsync completes with value of given supplier
3446	+	*/
3447	+	public void testCompleteAsync() {
3448	+	for (Integer v1 : new Integer[] { 1, null })
3449	+	{
3450	+	CompletableFuture<Integer> f = new CompletableFuture<>();
3451	+	f.completeAsync(() -> v1);
3452	+	f.join();
3453	+	checkCompletedNormally(f, v1);
3454	+	}}
3455	+
3456	+	/**
3457	+	* completeAsync completes exceptionally if given supplier throws
3458	+	*/
3459	+	public void testCompleteAsync2() {
3460	+	CompletableFuture<Integer> f = new CompletableFuture<>();
3461	+	CFException ex = new CFException();
3462	+	f.completeAsync(() -> {if (true) throw ex; return 1;});
3463	+	try {
3464	+	f.join();
3465	+	shouldThrow();
3466	+	} catch (CompletionException success) {}
3467	+	checkCompletedWithWrappedException(f, ex);
3468	+	}
3469	+
3470	+	/**
3471	+	* completeAsync with given executor completes with value of given supplier
3472	+	*/
3473	+	public void testCompleteAsync3() {
3474	+	for (Integer v1 : new Integer[] { 1, null })
3475	+	{
3476	+	CompletableFuture<Integer> f = new CompletableFuture<>();
3477	+	ThreadExecutor executor = new ThreadExecutor();
3478	+	f.completeAsync(() -> v1, executor);
3479	+	assertSame(v1, f.join());
3480	+	checkCompletedNormally(f, v1);
3481	+	assertEquals(1, executor.count.get());
3482	+	}}
3483	+
3484	+	/**
3485	+	* completeAsync with given executor completes exceptionally if
3486	+	* given supplier throws
3487	+	*/
3488	+	public void testCompleteAsync4() {
3489	+	CompletableFuture<Integer> f = new CompletableFuture<>();
3490	+	CFException ex = new CFException();
3491	+	ThreadExecutor executor = new ThreadExecutor();
3492	+	f.completeAsync(() -> {if (true) throw ex; return 1;}, executor);
3493	+	try {
3494	+	f.join();
3495	+	shouldThrow();
3496	+	} catch (CompletionException success) {}
3497	+	checkCompletedWithWrappedException(f, ex);
3498	+	assertEquals(1, executor.count.get());
3499	+	}
3500	+
3501	+	/**
3502	+	* orTimeout completes with TimeoutException if not complete
3503	+	*/
3504	+	public void testOrTimeout_timesOut() {
3505	+	long timeoutMillis = timeoutMillis();
3506	+	CompletableFuture<Integer> f = new CompletableFuture<>();
3507	+	long startTime = System.nanoTime();
3508	+	f.orTimeout(timeoutMillis, MILLISECONDS);
3509	+	checkCompletedWithTimeoutException(f);
3510	+	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
3511	+	}
3512	+
3513	+	/**
3514	+	* orTimeout completes normally if completed before timeout
3515	+	*/
3516	+	public void testOrTimeout_completed() {
3517	+	for (Integer v1 : new Integer[] { 1, null })
3518	+	{
3519	+	CompletableFuture<Integer> f = new CompletableFuture<>();
3520	+	CompletableFuture<Integer> g = new CompletableFuture<>();
3521	+	long startTime = System.nanoTime();
3522	+	f.complete(v1);
3523	+	f.orTimeout(LONG_DELAY_MS, MILLISECONDS);
3524	+	g.orTimeout(LONG_DELAY_MS, MILLISECONDS);
3525	+	g.complete(v1);
3526	+	checkCompletedNormally(f, v1);
3527	+	checkCompletedNormally(g, v1);
3528	+	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS / 2);
3529	+	}}
3530	+
3531	+	/**
3532	+	* completeOnTimeout completes with given value if not complete
3533	+	*/
3534	+	public void testCompleteOnTimeout_timesOut() {
3535	+	testInParallel(() -> testCompleteOnTimeout_timesOut(42),
3536	+	() -> testCompleteOnTimeout_timesOut(null));
3537	+	}
3538	+
3539	+	public void testCompleteOnTimeout_timesOut(Integer v) {
3540	+	long timeoutMillis = timeoutMillis();
3541	+	CompletableFuture<Integer> f = new CompletableFuture<>();
3542	+	long startTime = System.nanoTime();
3543	+	f.completeOnTimeout(v, timeoutMillis, MILLISECONDS);
3544	+	assertSame(v, f.join());
3545	+	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
3546	+	f.complete(99);         // should have no effect
3547	+	checkCompletedNormally(f, v);
3548	+	}
3549	+
3550	+	/**
3551	+	* completeOnTimeout has no effect if completed within timeout
3552	+	*/
3553	+	public void testCompleteOnTimeout_completed() {
3554	+	for (Integer v1 : new Integer[] { 1, null })
3555	+	{
3556	+	CompletableFuture<Integer> f = new CompletableFuture<>();
3557	+	CompletableFuture<Integer> g = new CompletableFuture<>();
3558	+	long startTime = System.nanoTime();
3559	+	f.complete(v1);
3560	+	f.completeOnTimeout(-1, LONG_DELAY_MS, MILLISECONDS);
3561	+	g.completeOnTimeout(-1, LONG_DELAY_MS, MILLISECONDS);
3562	+	g.complete(v1);
3563	+	checkCompletedNormally(f, v1);
3564	+	checkCompletedNormally(g, v1);
3565	+	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS / 2);
3566	+	}}
3567	+
3568	+	/**
3569	+	* delayedExecutor returns an executor that delays submission
3570	+	*/
3571	+	public void testDelayedExecutor() {
3572	+	testInParallel(() -> testDelayedExecutor(null, null),
3573	+	() -> testDelayedExecutor(null, 1),
3574	+	() -> testDelayedExecutor(new ThreadExecutor(), 1),
3575	+	() -> testDelayedExecutor(new ThreadExecutor(), 1));
3576	+	}
3577	+
3578	+	public void testDelayedExecutor(Executor executor, Integer v) throws Exception {
3579	+	long timeoutMillis = timeoutMillis();
3580	+	// Use an "unreasonably long" long timeout to catch lingering threads
3581	+	long longTimeoutMillis = 1000 * 60 * 60 * 24;
3582	+	final Executor delayer, longDelayer;
3583	+	if (executor == null) {
3584	+	delayer = CompletableFuture.delayedExecutor(timeoutMillis, MILLISECONDS);
3585	+	longDelayer = CompletableFuture.delayedExecutor(longTimeoutMillis, MILLISECONDS);
3586	+	} else {
3587	+	delayer = CompletableFuture.delayedExecutor(timeoutMillis, MILLISECONDS, executor);
3588	+	longDelayer = CompletableFuture.delayedExecutor(longTimeoutMillis, MILLISECONDS, executor);
3589	+	}
3590	+	long startTime = System.nanoTime();
3591	+	CompletableFuture<Integer> f =
3592	+	CompletableFuture.supplyAsync(() -> v, delayer);
3593	+	CompletableFuture<Integer> g =
3594	+	CompletableFuture.supplyAsync(() -> v, longDelayer);
3595	+
3596	+	assertNull(g.getNow(null));
3597	+
3598	+	assertSame(v, f.get(LONG_DELAY_MS, MILLISECONDS));
3599	+	long millisElapsed = millisElapsedSince(startTime);
3600	+	assertTrue(millisElapsed >= timeoutMillis);
3601	+	assertTrue(millisElapsed < LONG_DELAY_MS / 2);
3602	+
3603	+	checkCompletedNormally(f, v);
3604	+
3605	+	checkIncomplete(g);
3606	+	assertTrue(g.cancel(true));
3607	+	}
3608	+
3609		//--- tests of implementation details; not part of official tck ---
3610
3611		Object resultOf(CompletableFuture<?> f) {
#	Line 3339 | Line 3696 | public class CompletableFutureTest exten
3696		}
3697		}}
3698
3699	+	/**
3700	+	* Minimal completion stages throw UOE for all non-CompletionStage methods
3701	+	*/
3702	+	public void testMinimalCompletionStage_minimality() {
3703	+	if (!testImplementationDetails) return;
3704	+	Function<Method, String> toSignature =
3705	+	(method) -> method.getName() + Arrays.toString(method.getParameterTypes());
3706	+	List<Method> minimalMethods =
3707	+	Stream.of(Object.class, CompletionStage.class)
3708	+	.map((klazz) -> Stream.of(klazz.getMethods()))
3709	+	.reduce(Stream::concat)
3710	+	.orElseGet(Stream::empty)
3711	+	.filter((method) -> (method.getModifiers() & Modifier.STATIC) == 0)
3712	+	.collect(Collectors.toList());
3713	+	// Methods from CompletableFuture permitted NOT to throw UOE
3714	+	String[] signatureWhitelist = {
3715	+	"newIncompleteFuture[]",
3716	+	"defaultExecutor[]",
3717	+	"minimalCompletionStage[]",
3718	+	"copy[]",
3719	+	};
3720	+	Set<String> permittedMethodSignatures =
3721	+	Stream.concat(minimalMethods.stream().map(toSignature),
3722	+	Stream.of(signatureWhitelist))
3723	+	.collect(Collectors.toSet());
3724	+	List<Method> allMethods = Stream.of(CompletableFuture.class.getMethods())
3725	+	.filter((method) -> (method.getModifiers() & Modifier.STATIC) == 0)
3726	+	.filter((method) -> !permittedMethodSignatures.contains(toSignature.apply(method)))
3727	+	.collect(Collectors.toList());
3728	+
3729	+	CompletionStage<Integer> minimalStage =
3730	+	new CompletableFuture<Integer>().minimalCompletionStage();
3731	+
3732	+	List<Method> bugs = new ArrayList<>();
3733	+	for (Method method : allMethods) {
3734	+	Class<?>[] parameterTypes = method.getParameterTypes();
3735	+	Object[] args = new Object[parameterTypes.length];
3736	+	// Manufacture boxed primitives for primitive params
3737	+	for (int i = 0; i < args.length; i++) {
3738	+	Class<?> type = parameterTypes[i];
3739	+	if (parameterTypes[i] == boolean.class)
3740	+	args[i] = false;
3741	+	else if (parameterTypes[i] == int.class)
3742	+	args[i] = 0;
3743	+	else if (parameterTypes[i] == long.class)
3744	+	args[i] = 0L;
3745	+	}
3746	+	try {
3747	+	method.invoke(minimalStage, args);
3748	+	bugs.add(method);
3749	+	}
3750	+	catch (java.lang.reflect.InvocationTargetException expected) {
3751	+	if (! (expected.getCause() instanceof UnsupportedOperationException)) {
3752	+	bugs.add(method);
3753	+	// expected.getCause().printStackTrace();
3754	+	}
3755	+	}
3756	+	catch (ReflectiveOperationException bad) { throw new Error(bad); }
3757	+	}
3758	+	if (!bugs.isEmpty())
3759	+	throw new Error("Methods did not throw UOE: " + bugs.toString());
3760	+	}
3761	+
3762	+	//     static <U> U join(CompletionStage<U> stage) {
3763	+	//         CompletableFuture<U> f = new CompletableFuture<>();
3764	+	//         stage.whenComplete((v, ex) -> {
3765	+	//             if (ex != null) f.completeExceptionally(ex); else f.complete(v);
3766	+	//         });
3767	+	//         return f.join();
3768	+	//     }
3769	+
3770	+	//     static <U> boolean isDone(CompletionStage<U> stage) {
3771	+	//         CompletableFuture<U> f = new CompletableFuture<>();
3772	+	//         stage.whenComplete((v, ex) -> {
3773	+	//             if (ex != null) f.completeExceptionally(ex); else f.complete(v);
3774	+	//         });
3775	+	//         return f.isDone();
3776	+	//     }
3777	+
3778	+	//     static <U> U join2(CompletionStage<U> stage) {
3779	+	//         return stage.toCompletableFuture().copy().join();
3780	+	//     }
3781	+
3782	+	//     static <U> boolean isDone2(CompletionStage<U> stage) {
3783	+	//         return stage.toCompletableFuture().copy().isDone();
3784	+	//     }
3785	+
3786		}

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