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root/jsr166/jsr166/src/test/tck/CompletableFutureTest.java

Comparing jsr166/src/test/tck/CompletableFutureTest.java (file contents):
Revision 1.105 by dl, Thu Sep 3 16:30:05 2015 UTC vs.
Revision 1.123 by jsr166, Tue Sep 8 19:45:35 2015 UTC

#	Line 8 | Line 8
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;
23		import java.util.concurrent.CancellationException;
24		import java.util.concurrent.CompletableFuture;
#	Line 77 | Line 85 | public class CompletableFutureTest exten
85		assertTrue(f.toString().contains("[Completed normally]"));
86		}
87
88	<	void checkCompletedWithWrappedCFException(CompletableFuture<?> f) {
89	<	long startTime = System.nanoTime();
90	<	long timeoutMillis = LONG_DELAY_MS;
91	<	try {
92	<	f.get(timeoutMillis, MILLISECONDS);
93	<	shouldThrow();
94	<	} catch (ExecutionException success) {
95	<	assertTrue(success.getCause() instanceof CFException);
96	<	} catch (Throwable fail) { threadUnexpectedException(fail); }
97	<	assertTrue(millisElapsedSince(startTime) < timeoutMillis/2);
98	<
99	<	try {
100	<	f.join();
101	<	shouldThrow();
102	<	} catch (CompletionException success) {
103	<	assertTrue(success.getCause() instanceof CFException);
104	<	}
97	<	try {
98	<	f.getNow(null);
99	<	shouldThrow();
100	<	} catch (CompletionException success) {
101	<	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 {
104	<	f.get();
105	<	shouldThrow();
106	<	} catch (ExecutionException success) {
107	<	assertTrue(success.getCause() instanceof CFException);
108	<	} catch (Throwable fail) { threadUnexpectedException(fail); }
109	<	assertTrue(f.isDone());
110	<	assertFalse(f.isCancelled());
111	<	assertTrue(f.toString().contains("[Completed exceptionally]"));
112	<	}
106	>	checker.accept(cause);
107
114	–	<U> void checkCompletedExceptionallyWithRootCause(CompletableFuture<U> f,
115	–	Throwable ex) {
108		long startTime = System.nanoTime();
117	–	long timeoutMillis = LONG_DELAY_MS;
109		try {
110	<	f.get(timeoutMillis, MILLISECONDS);
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) < timeoutMillis/2);
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
145	–	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 checkCompletedExceptionallyWithTimeout(CompletableFuture<U> f) {
145	<	long startTime = System.nanoTime();
146	<	long timeoutMillis = LONG_DELAY_MS;
147	<	try {
154	<	f.get(timeoutMillis, MILLISECONDS);
155	<	shouldThrow();
156	<	} catch (ExecutionException ex) {
157	<	assertTrue(ex.getCause() instanceof TimeoutException);
158	<	} catch (Throwable fail) { threadUnexpectedException(fail); }
159	<	assertTrue(millisElapsedSince(startTime) < timeoutMillis/2);
160	<
161	<	try {
162	<	f.join();
163	<	shouldThrow();
164	<	} catch (Throwable ex) {
165	<	assertTrue(ex.getCause() instanceof TimeoutException);
166	<	}
167	<
168	<	try {
169	<	f.getNow(null);
170	<	shouldThrow();
171	<	} catch (Throwable ex) {
172	<	assertTrue(ex.getCause() instanceof TimeoutException);
173	<	}
144	>	void checkCompletedWithWrappedCFException(CompletableFuture<?> f) {
145	>	checkCompletedExceptionally(f, true,
146	>	(t) -> assertTrue(t instanceof CFException));
147	>	}
148
149	<	try {
150	<	f.get();
151	<	shouldThrow();
152	<	} catch (ExecutionException ex) {
179	<	assertTrue(ex.getCause() instanceof TimeoutException);
180	<	} catch (Throwable fail) { threadUnexpectedException(fail); }
149	>	void checkCompletedWithWrappedCancellationException(CompletableFuture<?> f) {
150	>	checkCompletedExceptionally(f, true,
151	>	(t) -> assertTrue(t instanceof CancellationException));
152	>	}
153
154	<	assertTrue(f.isDone());
155	<	assertFalse(f.isCancelled());
156	<	assertTrue(f.toString().contains("[Completed exceptionally]"));
154	>	void checkCompletedWithTimeoutException(CompletableFuture<?> f) {
155	>	checkCompletedExceptionally(f, false,
156	>	(t) -> assertTrue(t instanceof TimeoutException));
157		}
158
159	<	<U> void checkCompletedWithWrappedException(CompletableFuture<U> f,
160	<	Throwable ex) {
161	<	checkCompletedExceptionallyWithRootCause(f, ex);
190	<	try {
191	<	CompletableFuture<Throwable> spy = f.handle
192	<	((U u, Throwable t) -> t);
193	<	assertTrue(spy.join() instanceof CompletionException);
194	<	assertSame(ex, spy.join().getCause());
195	<	} catch (Throwable fail) { threadUnexpectedException(fail); }
159	>	void checkCompletedWithWrappedException(CompletableFuture<?> f,
160	>	Throwable ex) {
161	>	checkCompletedExceptionally(f, true, (t) -> assertSame(t, ex));
162		}
163
164	<	<U> void checkCompletedExceptionally(CompletableFuture<U> f, Throwable ex) {
165	<	checkCompletedExceptionallyWithRootCause(f, ex);
200	<	try {
201	<	CompletableFuture<Throwable> spy = f.handle
202	<	((U u, Throwable t) -> t);
203	<	assertSame(ex, spy.join());
204	<	} catch (Throwable fail) { threadUnexpectedException(fail); }
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();
209	–	long timeoutMillis = LONG_DELAY_MS;
170		try {
171	<	f.get(timeoutMillis, MILLISECONDS);
171	>	f.get(LONG_DELAY_MS, MILLISECONDS);
172		shouldThrow();
173		} catch (CancellationException success) {
174		} catch (Throwable fail) { threadUnexpectedException(fail); }
175	<	assertTrue(millisElapsedSince(startTime) < timeoutMillis/2);
175	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS / 2);
176
177		try {
178		f.join();
#	Line 227 | Line 187 | public class CompletableFutureTest exten
187		shouldThrow();
188		} catch (CancellationException success) {
189		} catch (Throwable fail) { threadUnexpectedException(fail); }
230	–	assertTrue(f.isDone());
231	–	assertTrue(f.isCompletedExceptionally());
232	–	assertTrue(f.isCancelled());
233	–	assertTrue(f.toString().contains("[Completed exceptionally]"));
234	–	}
190
191	<	void checkCompletedWithWrappedCancellationException(CompletableFuture<?> f) {
237	<	long startTime = System.nanoTime();
238	<	long timeoutMillis = LONG_DELAY_MS;
239	<	try {
240	<	f.get(timeoutMillis, MILLISECONDS);
241	<	shouldThrow();
242	<	} catch (ExecutionException success) {
243	<	assertTrue(success.getCause() instanceof CancellationException);
244	<	} catch (Throwable fail) { threadUnexpectedException(fail); }
245	<	assertTrue(millisElapsedSince(startTime) < timeoutMillis/2);
191	>	assertTrue(exceptionalCompletion(f) instanceof CancellationException);
192
247	–	try {
248	–	f.join();
249	–	shouldThrow();
250	–	} catch (CompletionException success) {
251	–	assertTrue(success.getCause() instanceof CancellationException);
252	–	}
253	–	try {
254	–	f.getNow(null);
255	–	shouldThrow();
256	–	} catch (CompletionException success) {
257	–	assertTrue(success.getCause() instanceof CancellationException);
258	–	}
259	–	try {
260	–	f.get();
261	–	shouldThrow();
262	–	} catch (ExecutionException success) {
263	–	assertTrue(success.getCause() instanceof CancellationException);
264	–	} catch (Throwable fail) { threadUnexpectedException(fail); }
193		assertTrue(f.isDone());
266	–	assertFalse(f.isCancelled());
194		assertTrue(f.isCompletedExceptionally());
195	+	assertTrue(f.isCancelled());
196		assertTrue(f.toString().contains("[Completed exceptionally]"));
197		}
198
#	Line 3142 | 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 3333 | Line 3261 | public class CompletableFutureTest exten
3261		() -> f.exceptionally(null),
3262
3263		() -> f.handle(null),
3264	+
3265		() -> CompletableFuture.allOf((CompletableFuture<?>)null),
3266		() -> CompletableFuture.allOf((CompletableFuture<?>[])null),
3267		() -> CompletableFuture.allOf(f, null),
#	Line 3344 | 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 3364 | Line 3303 | public class CompletableFutureTest exten
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	<	}
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();
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);});
#	Line 3384 | Line 3331 | public class CompletableFutureTest exten
3331
3332		/**
3333		* defaultExecutor by default returns the commonPool if
3334	<	* it supports at least one thread.
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();
3339	>	Executor c = ForkJoinPool.commonPool();
3340		if (ForkJoinPool.getCommonPoolParallelism() > 1)
3341		assertSame(e, c);
3342	+	else
3343	+	assertNotSame(e, c);
3344		}
3345
3346		/**
#	Line 3401 | Line 3350 | public class CompletableFutureTest exten
3350		public void testFailedFuture() {
3351		CFException ex = new CFException();
3352		CompletableFuture<Integer> f = CompletableFuture.failedFuture(ex);
3353	<	checkCompletedExceptionallyWithRootCause(f, ex);
3353	>	checkCompletedExceptionally(f, ex);
3354		}
3355
3356		/**
3357		* failedFuture(null) throws NPE
3358		*/
3359	<	public void testFailedFuture2() {
3359	>	public void testFailedFuture_null() {
3360		try {
3361		CompletableFuture<Integer> f = CompletableFuture.failedFuture(null);
3362		shouldThrow();
#	Line 3440 | Line 3389 | public class CompletableFutureTest exten
3389		CFException ex = new CFException();
3390		f.completeExceptionally(ex);
3391		checkCompletedExceptionally(f, ex);
3392	<	checkCompletedWithWrappedCFException(g);
3392	>	checkCompletedWithWrappedException(g, ex);
3393		}
3394
3395		/**
#	Line 3450 | Line 3399 | public class CompletableFutureTest exten
3399		public void testMinimalCompletionStage() {
3400		CompletableFuture<Integer> f = new CompletableFuture<>();
3401		CompletionStage<Integer> g = f.minimalCompletionStage();
3402	<	AtomicInteger x = new AtomicInteger();
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);});
#	Line 3467 | Line 3416 | public class CompletableFutureTest exten
3416		public void testMinimalCompletionStage2() {
3417		CompletableFuture<Integer> f = new CompletableFuture<>();
3418		CompletionStage<Integer> g = f.minimalCompletionStage();
3419	<	AtomicInteger x = new AtomicInteger();
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);
#	Line 3479 | Line 3428 | public class CompletableFutureTest exten
3428		}
3429
3430		/**
3431	<	* failedStage returns a Completionstage completed
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();
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().getCause(), ex);
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(() -> 1);
3451	>	f.completeAsync(() -> v1);
3452		f.join();
3453	<	checkCompletedNormally(f, 1);
3454	<	}
3453	>	checkCompletedNormally(f, v1);
3454	>	}}
3455
3456		/**
3457		* completeAsync completes exceptionally if given supplier throws
#	Line 3512 | Line 3463 | public class CompletableFutureTest exten
3463		try {
3464		f.join();
3465		shouldThrow();
3466	<	} catch (Exception success) {}
3467	<	checkCompletedWithWrappedCFException(f);
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	<	f.completeAsync(() -> 1, new ThreadExecutor());
3478	<	f.join();
3479	<	checkCompletedNormally(f, 1);
3480	<	}
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
#	Line 3533 | Line 3488 | public class CompletableFutureTest exten
3488		public void testCompleteAsync4() {
3489		CompletableFuture<Integer> f = new CompletableFuture<>();
3490		CFException ex = new CFException();
3491	<	f.completeAsync(() -> {if (true) throw ex; return 1;}, new ThreadExecutor());
3491	>	ThreadExecutor executor = new ThreadExecutor();
3492	>	f.completeAsync(() -> {if (true) throw ex; return 1;}, executor);
3493		try {
3494		f.join();
3495		shouldThrow();
3496	<	} catch (Exception success) {}
3497	<	checkCompletedWithWrappedCFException(f);
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
3502	>	* orTimeout completes with TimeoutException if not complete
3503		*/
3504	<	public void testOrTimeout() {
3504	>	public void testOrTimeout_timesOut() {
3505	>	long timeoutMillis = timeoutMillis();
3506		CompletableFuture<Integer> f = new CompletableFuture<>();
3507	<	f.orTimeout(SHORT_DELAY_MS, TimeUnit.MILLISECONDS);
3508	<	checkCompletedExceptionallyWithTimeout(f);
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
3514	>	* orTimeout completes normally if completed before timeout
3515		*/
3516	<	public void testOrTimeout2() {
3516	>	public void testOrTimeout_completed() {
3517	>	for (Integer v1 : new Integer[] { 1, null })
3518	>	{
3519		CompletableFuture<Integer> f = new CompletableFuture<>();
3520	<	f.complete(1);
3521	<	f.orTimeout(SHORT_DELAY_MS, TimeUnit.MILLISECONDS);
3522	<	checkCompletedNormally(f, 1);
3523	<	}
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
3532	>	* completeOnTimeout completes with given value if not complete
3533		*/
3534	<	public void testCompleteOnTimeout() {
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	<	f.completeOnTimeout(-1, SHORT_DELAY_MS, TimeUnit.MILLISECONDS);
3543	<	f.join();
3544	<	checkCompletedNormally(f, -1);
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
3551	>	* completeOnTimeout has no effect if completed within timeout
3552		*/
3553	<	public void testCompleteOnTimeout2() {
3553	>	public void testCompleteOnTimeout_completed() {
3554	>	for (Integer v1 : new Integer[] { 1, null })
3555	>	{
3556		CompletableFuture<Integer> f = new CompletableFuture<>();
3557	<	f.complete(1);
3558	<	f.completeOnTimeout(-1, SHORT_DELAY_MS, TimeUnit.MILLISECONDS);
3559	<	checkCompletedNormally(f, 1);
3560	<	}
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	<	long timeoutMillis = SMALL_DELAY_MS;
3573	<	Executor d = CompletableFuture.delayedExecutor(timeoutMillis,
3574	<	MILLISECONDS);
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 = CompletableFuture.supplyAsync(() -> 1, d);
3592	<	assertNull(f.getNow(null));
3593	<	try {
3594	<	f.get(LONG_DELAY_MS, MILLISECONDS);
3595	<	} catch (Throwable fail) { threadUnexpectedException(fail); }
3596	<	assertTrue(millisElapsedSince(startTime) > timeoutMillis/2);
3597	<	checkCompletedNormally(f, 1);
3598	<	}
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	<	/**
3604	<	* delayedExecutor for a given executor returns an executor that
3605	<	* delays submission
3606	<	*/
3604	<	public void testDelayedExecutor2() {
3605	<	long timeoutMillis = SMALL_DELAY_MS;
3606	<	Executor d = CompletableFuture.delayedExecutor(timeoutMillis,
3607	<	MILLISECONDS,
3608	<	new ThreadExecutor());
3609	<	long startTime = System.nanoTime();
3610	<	CompletableFuture<Integer> f = CompletableFuture.supplyAsync(() -> 1, d);
3611	<	assertNull(f.getNow(null));
3612	<	try {
3613	<	f.get(LONG_DELAY_MS, MILLISECONDS);
3614	<	} catch (Throwable fail) { threadUnexpectedException(fail); }
3615	<	assertTrue(millisElapsedSince(startTime) > timeoutMillis/2);
3616	<	checkCompletedNormally(f, 1);
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 ---
#	Line 3706 | 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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