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Comparing jsr166/src/test/tck/CompletableFutureTest.java (file contents):
Revision 1.3 by jsr166, Sat Feb 9 19:33:08 2013 UTC vs.
Revision 1.91 by jsr166, Tue Jun 17 20:34:18 2014 UTC

# Line 1 | Line 1
1   /*
2 < * Written by Doug Lea with assistance from members of JCP JSR-166
3 < * Expert Group and released to the public domain, as explained at
2 > * Written by Doug Lea and Martin Buchholz with assistance from
3 > * members of JCP JSR-166 Expert Group and released to the public
4 > * domain, as explained at
5   * http://creativecommons.org/publicdomain/zero/1.0/
5 * Other contributors include Andrew Wright, Jeffrey Hayes,
6 * Pat Fisher, Mike Judd.
6   */
7  
8   import junit.framework.*;
9   import java.util.concurrent.Callable;
10 + import java.util.concurrent.Executor;
11 + import java.util.concurrent.ExecutorService;
12 + import java.util.concurrent.Executors;
13   import java.util.concurrent.CancellationException;
14   import java.util.concurrent.CountDownLatch;
15   import java.util.concurrent.ExecutionException;
16   import java.util.concurrent.Future;
17   import java.util.concurrent.CompletableFuture;
18 + import java.util.concurrent.CompletionException;
19 + import java.util.concurrent.CompletionStage;
20 + import java.util.concurrent.ForkJoinPool;
21 + import java.util.concurrent.ForkJoinTask;
22   import java.util.concurrent.TimeoutException;
23   import java.util.concurrent.atomic.AtomicInteger;
24   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;
29 + import java.util.function.BiConsumer;
30 + import java.util.function.Function;
31 + import java.util.function.BiFunction;
32  
33   public class CompletableFutureTest extends JSR166TestCase {
34  
# Line 28 | Line 39 | public class CompletableFutureTest exten
39          return new TestSuite(CompletableFutureTest.class);
40      }
41  
42 <    // XXXX Just a skeleton implementation for now.
43 <    public void testTODO() {
44 <        fail("Please add some real tests!");
42 >    static class CFException extends RuntimeException {}
43 >
44 >    void checkIncomplete(CompletableFuture<?> f) {
45 >        assertFalse(f.isDone());
46 >        assertFalse(f.isCancelled());
47 >        assertTrue(f.toString().contains("[Not completed]"));
48 >        try {
49 >            assertNull(f.getNow(null));
50 >        } catch (Throwable fail) { threadUnexpectedException(fail); }
51 >        try {
52 >            f.get(0L, SECONDS);
53 >            shouldThrow();
54 >        }
55 >        catch (TimeoutException success) {}
56 >        catch (Throwable fail) { threadUnexpectedException(fail); }
57 >    }
58 >
59 >    <T> void checkCompletedNormally(CompletableFuture<T> f, T value) {
60 >        try {
61 >            assertEquals(value, f.get(LONG_DELAY_MS, MILLISECONDS));
62 >        } catch (Throwable fail) { threadUnexpectedException(fail); }
63 >        try {
64 >            assertEquals(value, f.join());
65 >        } catch (Throwable fail) { threadUnexpectedException(fail); }
66 >        try {
67 >            assertEquals(value, f.getNow(null));
68 >        } catch (Throwable fail) { threadUnexpectedException(fail); }
69 >        try {
70 >            assertEquals(value, f.get());
71 >        } catch (Throwable fail) { threadUnexpectedException(fail); }
72 >        assertTrue(f.isDone());
73 >        assertFalse(f.isCancelled());
74 >        assertFalse(f.isCompletedExceptionally());
75 >        assertTrue(f.toString().contains("[Completed normally]"));
76 >    }
77 >
78 >    void checkCompletedWithWrappedCFException(CompletableFuture<?> f) {
79 >        try {
80 >            f.get(LONG_DELAY_MS, MILLISECONDS);
81 >            shouldThrow();
82 >        } catch (ExecutionException success) {
83 >            assertTrue(success.getCause() instanceof CFException);
84 >        } catch (Throwable fail) { threadUnexpectedException(fail); }
85 >        try {
86 >            f.join();
87 >            shouldThrow();
88 >        } catch (CompletionException success) {
89 >            assertTrue(success.getCause() instanceof CFException);
90 >        }
91 >        try {
92 >            f.getNow(null);
93 >            shouldThrow();
94 >        } catch (CompletionException success) {
95 >            assertTrue(success.getCause() instanceof CFException);
96 >        }
97 >        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 >
108 >    <U> void checkCompletedExceptionallyWithRootCause(CompletableFuture<U> f,
109 >                                                      Throwable ex) {
110 >        try {
111 >            f.get(LONG_DELAY_MS, MILLISECONDS);
112 >            shouldThrow();
113 >        } catch (ExecutionException success) {
114 >            assertSame(ex, success.getCause());
115 >        } catch (Throwable fail) { threadUnexpectedException(fail); }
116 >        try {
117 >            f.join();
118 >            shouldThrow();
119 >        } catch (CompletionException success) {
120 >            assertSame(ex, success.getCause());
121 >        }
122 >        try {
123 >            f.getNow(null);
124 >            shouldThrow();
125 >        } catch (CompletionException success) {
126 >            assertSame(ex, success.getCause());
127 >        }
128 >        try {
129 >            f.get();
130 >            shouldThrow();
131 >        } catch (ExecutionException success) {
132 >            assertSame(ex, success.getCause());
133 >        } catch (Throwable fail) { threadUnexpectedException(fail); }
134 >
135 >        assertTrue(f.isDone());
136 >        assertFalse(f.isCancelled());
137 >        assertTrue(f.toString().contains("[Completed exceptionally]"));
138 >    }
139 >
140 >    <U> void checkCompletedWithWrappedException(CompletableFuture<U> f,
141 >                                                Throwable ex) {
142 >        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); }
149 >    }
150 >
151 >    <U> void checkCompletedExceptionally(CompletableFuture<U> f, Throwable ex) {
152 >        checkCompletedExceptionallyWithRootCause(f, ex);
153 >        try {
154 >            CompletableFuture<Throwable> spy = f.handle
155 >                ((U u, Throwable t) -> t);
156 >            assertSame(ex, spy.join());
157 >        } catch (Throwable fail) { threadUnexpectedException(fail); }
158 >    }
159 >
160 >    void checkCancelled(CompletableFuture<?> f) {
161 >        try {
162 >            f.get(LONG_DELAY_MS, MILLISECONDS);
163 >            shouldThrow();
164 >        } catch (CancellationException success) {
165 >        } catch (Throwable fail) { threadUnexpectedException(fail); }
166 >        try {
167 >            f.join();
168 >            shouldThrow();
169 >        } catch (CancellationException success) {}
170 >        try {
171 >            f.getNow(null);
172 >            shouldThrow();
173 >        } catch (CancellationException success) {}
174 >        try {
175 >            f.get();
176 >            shouldThrow();
177 >        } catch (CancellationException success) {
178 >        } 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 >    }
184 >
185 >    void checkCompletedWithWrappedCancellationException(CompletableFuture<?> f) {
186 >        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); }
210 >        assertTrue(f.isDone());
211 >        assertFalse(f.isCancelled());
212 >        assertTrue(f.isCompletedExceptionally());
213 >        assertTrue(f.toString().contains("[Completed exceptionally]"));
214 >    }
215 >
216 >    /**
217 >     * A newly constructed CompletableFuture is incomplete, as indicated
218 >     * by methods isDone, isCancelled, and getNow
219 >     */
220 >    public void testConstructor() {
221 >        CompletableFuture<Integer> f = new CompletableFuture<>();
222 >        checkIncomplete(f);
223 >    }
224 >
225 >    /**
226 >     * complete completes normally, as indicated by methods isDone,
227 >     * isCancelled, join, get, and getNow
228 >     */
229 >    public void testComplete() {
230 >        for (Integer v1 : new Integer[] { 1, null })
231 >    {
232 >        CompletableFuture<Integer> f = new CompletableFuture<>();
233 >        checkIncomplete(f);
234 >        assertTrue(f.complete(v1));
235 >        assertFalse(f.complete(v1));
236 >        checkCompletedNormally(f, v1);
237 >    }}
238 >
239 >    /**
240 >     * completeExceptionally completes exceptionally, as indicated by
241 >     * methods isDone, isCancelled, join, get, and getNow
242 >     */
243 >    public void testCompleteExceptionally() {
244 >        CompletableFuture<Integer> f = new CompletableFuture<>();
245 >        CFException ex = new CFException();
246 >        checkIncomplete(f);
247 >        f.completeExceptionally(ex);
248 >        checkCompletedExceptionally(f, ex);
249      }
250  
251 +    /**
252 +     * cancel completes exceptionally and reports cancelled, as indicated by
253 +     * methods isDone, isCancelled, join, get, and getNow
254 +     */
255 +    public void testCancel() {
256 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
257 +    {
258 +        CompletableFuture<Integer> f = new CompletableFuture<>();
259 +        checkIncomplete(f);
260 +        assertTrue(f.cancel(true));
261 +        assertTrue(f.cancel(true));
262 +        checkCancelled(f);
263 +    }}
264 +
265 +    /**
266 +     * obtrudeValue forces completion with given value
267 +     */
268 +    public void testObtrudeValue() {
269 +        CompletableFuture<Integer> f = new CompletableFuture<>();
270 +        checkIncomplete(f);
271 +        assertTrue(f.complete(one));
272 +        checkCompletedNormally(f, one);
273 +        f.obtrudeValue(three);
274 +        checkCompletedNormally(f, three);
275 +        f.obtrudeValue(two);
276 +        checkCompletedNormally(f, two);
277 +        f = new CompletableFuture<>();
278 +        f.obtrudeValue(three);
279 +        checkCompletedNormally(f, three);
280 +        f.obtrudeValue(null);
281 +        checkCompletedNormally(f, null);
282 +        f = new CompletableFuture<>();
283 +        f.completeExceptionally(new CFException());
284 +        f.obtrudeValue(four);
285 +        checkCompletedNormally(f, four);
286 +    }
287 +
288 +    /**
289 +     * obtrudeException forces completion with given exception
290 +     */
291 +    public void testObtrudeException() {
292 +        for (Integer v1 : new Integer[] { 1, null })
293 +    {
294 +        CFException ex;
295 +        CompletableFuture<Integer> f;
296 +
297 +        f = new CompletableFuture<>();
298 +        assertTrue(f.complete(v1));
299 +        for (int i = 0; i < 2; i++) {
300 +            f.obtrudeException(ex = new CFException());
301 +            checkCompletedExceptionally(f, ex);
302 +        }
303 +
304 +        f = new CompletableFuture<>();
305 +        for (int i = 0; i < 2; i++) {
306 +            f.obtrudeException(ex = new CFException());
307 +            checkCompletedExceptionally(f, ex);
308 +        }
309 +
310 +        f = new CompletableFuture<>();
311 +        f.completeExceptionally(ex = new CFException());
312 +        f.obtrudeValue(v1);
313 +        checkCompletedNormally(f, v1);
314 +        f.obtrudeException(ex = new CFException());
315 +        checkCompletedExceptionally(f, ex);
316 +        f.completeExceptionally(new CFException());
317 +        checkCompletedExceptionally(f, ex);
318 +        assertFalse(f.complete(v1));
319 +        checkCompletedExceptionally(f, ex);
320 +    }}
321 +
322 +    /**
323 +     * getNumberOfDependents returns number of dependent tasks
324 +     */
325 +    public void testGetNumberOfDependents() {
326 +        for (ExecutionMode m : ExecutionMode.values())
327 +        for (Integer v1 : new Integer[] { 1, null })
328 +    {
329 +        CompletableFuture<Integer> f = new CompletableFuture<>();
330 +        assertEquals(0, f.getNumberOfDependents());
331 +        final CompletableFuture<Void> g = m.thenRun(f, new Noop(m));
332 +        assertEquals(1, f.getNumberOfDependents());
333 +        assertEquals(0, g.getNumberOfDependents());
334 +        final CompletableFuture<Void> h = m.thenRun(f, new Noop(m));
335 +        assertEquals(2, f.getNumberOfDependents());
336 +        assertEquals(0, h.getNumberOfDependents());
337 +        assertTrue(f.complete(v1));
338 +        checkCompletedNormally(g, null);
339 +        checkCompletedNormally(h, null);
340 +        assertEquals(0, f.getNumberOfDependents());
341 +        assertEquals(0, g.getNumberOfDependents());
342 +        assertEquals(0, h.getNumberOfDependents());
343 +    }}
344 +
345 +    /**
346 +     * toString indicates current completion state
347 +     */
348      public void testToString() {
349          CompletableFuture<String> f;
350  
351          f = new CompletableFuture<String>();
352          assertTrue(f.toString().contains("[Not completed]"));
353  
354 <        f.complete("foo");
354 >        assertTrue(f.complete("foo"));
355          assertTrue(f.toString().contains("[Completed normally]"));
356  
357          f = new CompletableFuture<String>();
358 <        f.completeExceptionally(new IndexOutOfBoundsException());
358 >        assertTrue(f.completeExceptionally(new IndexOutOfBoundsException()));
359          assertTrue(f.toString().contains("[Completed exceptionally]"));
360 +
361 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false }) {
362 +            f = new CompletableFuture<String>();
363 +            assertTrue(f.cancel(mayInterruptIfRunning));
364 +            assertTrue(f.toString().contains("[Completed exceptionally]"));
365 +        }
366 +    }
367 +
368 +    /**
369 +     * completedFuture returns a completed CompletableFuture with given value
370 +     */
371 +    public void testCompletedFuture() {
372 +        CompletableFuture<String> f = CompletableFuture.completedFuture("test");
373 +        checkCompletedNormally(f, "test");
374 +    }
375 +
376 +    abstract class CheckedAction {
377 +        int invocationCount = 0;
378 +        final ExecutionMode m;
379 +        CheckedAction(ExecutionMode m) { this.m = m; }
380 +        void invoked() {
381 +            m.checkExecutionMode();
382 +            assertEquals(0, invocationCount++);
383 +        }
384 +        void assertNotInvoked() { assertEquals(0, invocationCount); }
385 +        void assertInvoked() { assertEquals(1, invocationCount); }
386 +    }
387 +
388 +    abstract class CheckedIntegerAction extends CheckedAction {
389 +        Integer value;
390 +        CheckedIntegerAction(ExecutionMode m) { super(m); }
391 +        void assertValue(Integer expected) {
392 +            assertInvoked();
393 +            assertEquals(expected, value);
394 +        }
395 +    }
396 +
397 +    class IntegerSupplier extends CheckedAction
398 +        implements Supplier<Integer>
399 +    {
400 +        final Integer value;
401 +        IntegerSupplier(ExecutionMode m, Integer value) {
402 +            super(m);
403 +            this.value = value;
404 +        }
405 +        public Integer get() {
406 +            invoked();
407 +            return value;
408 +        }
409 +    }
410 +
411 +    // A function that handles and produces null values as well.
412 +    static Integer inc(Integer x) {
413 +        return (x == null) ? null : x + 1;
414 +    }
415 +
416 +    class NoopConsumer extends CheckedIntegerAction
417 +        implements Consumer<Integer>
418 +    {
419 +        NoopConsumer(ExecutionMode m) { super(m); }
420 +        public void accept(Integer x) {
421 +            invoked();
422 +            value = x;
423 +        }
424 +    }
425 +
426 +    class IncFunction extends CheckedIntegerAction
427 +        implements Function<Integer,Integer>
428 +    {
429 +        IncFunction(ExecutionMode m) { super(m); }
430 +        public Integer apply(Integer x) {
431 +            invoked();
432 +            return value = inc(x);
433 +        }
434 +    }
435 +
436 +    // Choose non-commutative actions for better coverage
437 +    // A non-commutative function that handles and produces null values as well.
438 +    static Integer subtract(Integer x, Integer y) {
439 +        return (x == null && y == null) ? null :
440 +            ((x == null) ? 42 : x.intValue())
441 +            - ((y == null) ? 99 : y.intValue());
442 +    }
443 +
444 +    class SubtractAction extends CheckedIntegerAction
445 +        implements BiConsumer<Integer, Integer>
446 +    {
447 +        SubtractAction(ExecutionMode m) { super(m); }
448 +        public void accept(Integer x, Integer y) {
449 +            invoked();
450 +            value = subtract(x, y);
451 +        }
452 +    }
453 +
454 +    class SubtractFunction extends CheckedIntegerAction
455 +        implements BiFunction<Integer, Integer, Integer>
456 +    {
457 +        SubtractFunction(ExecutionMode m) { super(m); }
458 +        public Integer apply(Integer x, Integer y) {
459 +            invoked();
460 +            return value = subtract(x, y);
461 +        }
462 +    }
463 +
464 +    class Noop extends CheckedAction implements Runnable {
465 +        Noop(ExecutionMode m) { super(m); }
466 +        public void run() {
467 +            invoked();
468 +        }
469 +    }
470 +
471 +    class FailingSupplier extends CheckedAction
472 +        implements Supplier<Integer>
473 +    {
474 +        FailingSupplier(ExecutionMode m) { super(m); }
475 +        public Integer get() {
476 +            invoked();
477 +            throw new CFException();
478 +        }
479 +    }
480 +
481 +    class FailingConsumer extends CheckedIntegerAction
482 +        implements Consumer<Integer>
483 +    {
484 +        FailingConsumer(ExecutionMode m) { super(m); }
485 +        public void accept(Integer x) {
486 +            invoked();
487 +            value = x;
488 +            throw new CFException();
489 +        }
490 +    }
491 +
492 +    class FailingBiConsumer extends CheckedIntegerAction
493 +        implements BiConsumer<Integer, Integer>
494 +    {
495 +        FailingBiConsumer(ExecutionMode m) { super(m); }
496 +        public void accept(Integer x, Integer y) {
497 +            invoked();
498 +            value = subtract(x, y);
499 +            throw new CFException();
500 +        }
501 +    }
502 +
503 +    class FailingFunction extends CheckedIntegerAction
504 +        implements Function<Integer, Integer>
505 +    {
506 +        FailingFunction(ExecutionMode m) { super(m); }
507 +        public Integer apply(Integer x) {
508 +            invoked();
509 +            value = x;
510 +            throw new CFException();
511 +        }
512 +    }
513 +
514 +    class FailingBiFunction extends CheckedIntegerAction
515 +        implements BiFunction<Integer, Integer, Integer>
516 +    {
517 +        FailingBiFunction(ExecutionMode m) { super(m); }
518 +        public Integer apply(Integer x, Integer y) {
519 +            invoked();
520 +            value = subtract(x, y);
521 +            throw new CFException();
522 +        }
523 +    }
524 +
525 +    class FailingRunnable extends CheckedAction implements Runnable {
526 +        FailingRunnable(ExecutionMode m) { super(m); }
527 +        public void run() {
528 +            invoked();
529 +            throw new CFException();
530 +        }
531 +    }
532 +
533 +
534 +    class CompletableFutureInc extends CheckedIntegerAction
535 +        implements Function<Integer, CompletableFuture<Integer>>
536 +    {
537 +        CompletableFutureInc(ExecutionMode m) { super(m); }
538 +        public CompletableFuture<Integer> apply(Integer x) {
539 +            invoked();
540 +            value = x;
541 +            CompletableFuture<Integer> f = new CompletableFuture<>();
542 +            assertTrue(f.complete(inc(x)));
543 +            return f;
544 +        }
545 +    }
546 +
547 +    class FailingCompletableFutureFunction extends CheckedIntegerAction
548 +        implements Function<Integer, CompletableFuture<Integer>>
549 +    {
550 +        FailingCompletableFutureFunction(ExecutionMode m) { super(m); }
551 +        public CompletableFuture<Integer> apply(Integer x) {
552 +            invoked();
553 +            value = x;
554 +            throw new CFException();
555 +        }
556 +    }
557 +
558 +    // Used for explicit executor tests
559 +    static final class ThreadExecutor implements Executor {
560 +        final AtomicInteger count = new AtomicInteger(0);
561 +        static final ThreadGroup tg = new ThreadGroup("ThreadExecutor");
562 +        static boolean startedCurrentThread() {
563 +            return Thread.currentThread().getThreadGroup() == tg;
564 +        }
565 +
566 +        public void execute(Runnable r) {
567 +            count.getAndIncrement();
568 +            new Thread(tg, r).start();
569 +        }
570 +    }
571 +
572 +    /**
573 +     * Permits the testing of parallel code for the 3 different
574 +     * execution modes without copy/pasting all the test methods.
575 +     */
576 +    enum ExecutionMode {
577 +        DEFAULT {
578 +            public void checkExecutionMode() {
579 +                assertFalse(ThreadExecutor.startedCurrentThread());
580 +                assertNull(ForkJoinTask.getPool());
581 +            }
582 +            public CompletableFuture<Void> runAsync(Runnable a) {
583 +                throw new UnsupportedOperationException();
584 +            }
585 +            public <U> CompletableFuture<U> supplyAsync(Supplier<U> a) {
586 +                throw new UnsupportedOperationException();
587 +            }
588 +            public <T> CompletableFuture<Void> thenRun
589 +                (CompletableFuture<T> f, Runnable a) {
590 +                return f.thenRun(a);
591 +            }
592 +            public <T> CompletableFuture<Void> thenAccept
593 +                (CompletableFuture<T> f, Consumer<? super T> a) {
594 +                return f.thenAccept(a);
595 +            }
596 +            public <T,U> CompletableFuture<U> thenApply
597 +                (CompletableFuture<T> f, Function<? super T,U> a) {
598 +                return f.thenApply(a);
599 +            }
600 +            public <T,U> CompletableFuture<U> thenCompose
601 +                (CompletableFuture<T> f,
602 +                 Function<? super T,? extends CompletionStage<U>> a) {
603 +                return f.thenCompose(a);
604 +            }
605 +            public <T,U> CompletableFuture<U> handle
606 +                (CompletableFuture<T> f,
607 +                 BiFunction<? super T,Throwable,? extends U> a) {
608 +                return f.handle(a);
609 +            }
610 +            public <T> CompletableFuture<T> whenComplete
611 +                (CompletableFuture<T> f,
612 +                 BiConsumer<? super T,? super Throwable> a) {
613 +                return f.whenComplete(a);
614 +            }
615 +            public <T,U> CompletableFuture<Void> runAfterBoth
616 +                (CompletableFuture<T> f, CompletableFuture<U> g, Runnable a) {
617 +                return f.runAfterBoth(g, a);
618 +            }
619 +            public <T,U> CompletableFuture<Void> thenAcceptBoth
620 +                (CompletableFuture<T> f,
621 +                 CompletionStage<? extends U> g,
622 +                 BiConsumer<? super T,? super U> a) {
623 +                return f.thenAcceptBoth(g, a);
624 +            }
625 +            public <T,U,V> CompletableFuture<V> thenCombine
626 +                (CompletableFuture<T> f,
627 +                 CompletionStage<? extends U> g,
628 +                 BiFunction<? super T,? super U,? extends V> a) {
629 +                return f.thenCombine(g, a);
630 +            }
631 +            public <T> CompletableFuture<Void> runAfterEither
632 +                (CompletableFuture<T> f,
633 +                 CompletionStage<?> g,
634 +                 java.lang.Runnable a) {
635 +                return f.runAfterEither(g, a);
636 +            }
637 +            public <T> CompletableFuture<Void> acceptEither
638 +                (CompletableFuture<T> f,
639 +                 CompletionStage<? extends T> g,
640 +                 Consumer<? super T> a) {
641 +                return f.acceptEither(g, a);
642 +            }
643 +            public <T,U> CompletableFuture<U> applyToEither
644 +                (CompletableFuture<T> f,
645 +                 CompletionStage<? extends T> g,
646 +                 Function<? super T,U> a) {
647 +                return f.applyToEither(g, a);
648 +            }
649 +        },
650 +
651 +        ASYNC {
652 +            public void checkExecutionMode() {
653 +                assertSame(ForkJoinPool.commonPool(),
654 +                           ForkJoinTask.getPool());
655 +            }
656 +            public CompletableFuture<Void> runAsync(Runnable a) {
657 +                return CompletableFuture.runAsync(a);
658 +            }
659 +            public <U> CompletableFuture<U> supplyAsync(Supplier<U> a) {
660 +                return CompletableFuture.supplyAsync(a);
661 +            }
662 +            public <T> CompletableFuture<Void> thenRun
663 +                (CompletableFuture<T> f, Runnable a) {
664 +                return f.thenRunAsync(a);
665 +            }
666 +            public <T> CompletableFuture<Void> thenAccept
667 +                (CompletableFuture<T> f, Consumer<? super T> a) {
668 +                return f.thenAcceptAsync(a);
669 +            }
670 +            public <T,U> CompletableFuture<U> thenApply
671 +                (CompletableFuture<T> f, Function<? super T,U> a) {
672 +                return f.thenApplyAsync(a);
673 +            }
674 +            public <T,U> CompletableFuture<U> thenCompose
675 +                (CompletableFuture<T> f,
676 +                 Function<? super T,? extends CompletionStage<U>> a) {
677 +                return f.thenComposeAsync(a);
678 +            }
679 +            public <T,U> CompletableFuture<U> handle
680 +                (CompletableFuture<T> f,
681 +                 BiFunction<? super T,Throwable,? extends U> a) {
682 +                return f.handleAsync(a);
683 +            }
684 +            public <T> CompletableFuture<T> whenComplete
685 +                (CompletableFuture<T> f,
686 +                 BiConsumer<? super T,? super Throwable> a) {
687 +                return f.whenCompleteAsync(a);
688 +            }
689 +            public <T,U> CompletableFuture<Void> runAfterBoth
690 +                (CompletableFuture<T> f, CompletableFuture<U> g, Runnable a) {
691 +                return f.runAfterBothAsync(g, a);
692 +            }
693 +            public <T,U> CompletableFuture<Void> thenAcceptBoth
694 +                (CompletableFuture<T> f,
695 +                 CompletionStage<? extends U> g,
696 +                 BiConsumer<? super T,? super U> a) {
697 +                return f.thenAcceptBothAsync(g, a);
698 +            }
699 +            public <T,U,V> CompletableFuture<V> thenCombine
700 +                (CompletableFuture<T> f,
701 +                 CompletionStage<? extends U> g,
702 +                 BiFunction<? super T,? super U,? extends V> a) {
703 +                return f.thenCombineAsync(g, a);
704 +            }
705 +            public <T> CompletableFuture<Void> runAfterEither
706 +                (CompletableFuture<T> f,
707 +                 CompletionStage<?> g,
708 +                 java.lang.Runnable a) {
709 +                return f.runAfterEitherAsync(g, a);
710 +            }
711 +            public <T> CompletableFuture<Void> acceptEither
712 +                (CompletableFuture<T> f,
713 +                 CompletionStage<? extends T> g,
714 +                 Consumer<? super T> a) {
715 +                return f.acceptEitherAsync(g, a);
716 +            }
717 +            public <T,U> CompletableFuture<U> applyToEither
718 +                (CompletableFuture<T> f,
719 +                 CompletionStage<? extends T> g,
720 +                 Function<? super T,U> a) {
721 +                return f.applyToEitherAsync(g, a);
722 +            }
723 +        },
724 +
725 +        EXECUTOR {
726 +            public void checkExecutionMode() {
727 +                assertTrue(ThreadExecutor.startedCurrentThread());
728 +            }
729 +            public CompletableFuture<Void> runAsync(Runnable a) {
730 +                return CompletableFuture.runAsync(a, new ThreadExecutor());
731 +            }
732 +            public <U> CompletableFuture<U> supplyAsync(Supplier<U> a) {
733 +                return CompletableFuture.supplyAsync(a, new ThreadExecutor());
734 +            }
735 +            public <T> CompletableFuture<Void> thenRun
736 +                (CompletableFuture<T> f, Runnable a) {
737 +                return f.thenRunAsync(a, new ThreadExecutor());
738 +            }
739 +            public <T> CompletableFuture<Void> thenAccept
740 +                (CompletableFuture<T> f, Consumer<? super T> a) {
741 +                return f.thenAcceptAsync(a, new ThreadExecutor());
742 +            }
743 +            public <T,U> CompletableFuture<U> thenApply
744 +                (CompletableFuture<T> f, Function<? super T,U> a) {
745 +                return f.thenApplyAsync(a, new ThreadExecutor());
746 +            }
747 +            public <T,U> CompletableFuture<U> thenCompose
748 +                (CompletableFuture<T> f,
749 +                 Function<? super T,? extends CompletionStage<U>> a) {
750 +                return f.thenComposeAsync(a, new ThreadExecutor());
751 +            }
752 +            public <T,U> CompletableFuture<U> handle
753 +                (CompletableFuture<T> f,
754 +                 BiFunction<? super T,Throwable,? extends U> a) {
755 +                return f.handleAsync(a, new ThreadExecutor());
756 +            }
757 +            public <T> CompletableFuture<T> whenComplete
758 +                (CompletableFuture<T> f,
759 +                 BiConsumer<? super T,? super Throwable> a) {
760 +                return f.whenCompleteAsync(a, new ThreadExecutor());
761 +            }
762 +            public <T,U> CompletableFuture<Void> runAfterBoth
763 +                (CompletableFuture<T> f, CompletableFuture<U> g, Runnable a) {
764 +                return f.runAfterBothAsync(g, a, new ThreadExecutor());
765 +            }
766 +            public <T,U> CompletableFuture<Void> thenAcceptBoth
767 +                (CompletableFuture<T> f,
768 +                 CompletionStage<? extends U> g,
769 +                 BiConsumer<? super T,? super U> a) {
770 +                return f.thenAcceptBothAsync(g, a, new ThreadExecutor());
771 +            }
772 +            public <T,U,V> CompletableFuture<V> thenCombine
773 +                (CompletableFuture<T> f,
774 +                 CompletionStage<? extends U> g,
775 +                 BiFunction<? super T,? super U,? extends V> a) {
776 +                return f.thenCombineAsync(g, a, new ThreadExecutor());
777 +            }
778 +            public <T> CompletableFuture<Void> runAfterEither
779 +                (CompletableFuture<T> f,
780 +                 CompletionStage<?> g,
781 +                 java.lang.Runnable a) {
782 +                return f.runAfterEitherAsync(g, a, new ThreadExecutor());
783 +            }
784 +            public <T> CompletableFuture<Void> acceptEither
785 +                (CompletableFuture<T> f,
786 +                 CompletionStage<? extends T> g,
787 +                 Consumer<? super T> a) {
788 +                return f.acceptEitherAsync(g, a, new ThreadExecutor());
789 +            }
790 +            public <T,U> CompletableFuture<U> applyToEither
791 +                (CompletableFuture<T> f,
792 +                 CompletionStage<? extends T> g,
793 +                 Function<? super T,U> a) {
794 +                return f.applyToEitherAsync(g, a, new ThreadExecutor());
795 +            }
796 +        };
797 +
798 +        public abstract void checkExecutionMode();
799 +        public abstract CompletableFuture<Void> runAsync(Runnable a);
800 +        public abstract <U> CompletableFuture<U> supplyAsync(Supplier<U> a);
801 +        public abstract <T> CompletableFuture<Void> thenRun
802 +            (CompletableFuture<T> f, Runnable a);
803 +        public abstract <T> CompletableFuture<Void> thenAccept
804 +            (CompletableFuture<T> f, Consumer<? super T> a);
805 +        public abstract <T,U> CompletableFuture<U> thenApply
806 +            (CompletableFuture<T> f, Function<? super T,U> a);
807 +        public abstract <T,U> CompletableFuture<U> thenCompose
808 +            (CompletableFuture<T> f,
809 +             Function<? super T,? extends CompletionStage<U>> a);
810 +        public abstract <T,U> CompletableFuture<U> handle
811 +            (CompletableFuture<T> f,
812 +             BiFunction<? super T,Throwable,? extends U> a);
813 +        public abstract <T> CompletableFuture<T> whenComplete
814 +            (CompletableFuture<T> f,
815 +             BiConsumer<? super T,? super Throwable> a);
816 +        public abstract <T,U> CompletableFuture<Void> runAfterBoth
817 +            (CompletableFuture<T> f, CompletableFuture<U> g, Runnable a);
818 +        public abstract <T,U> CompletableFuture<Void> thenAcceptBoth
819 +            (CompletableFuture<T> f,
820 +             CompletionStage<? extends U> g,
821 +             BiConsumer<? super T,? super U> a);
822 +        public abstract <T,U,V> CompletableFuture<V> thenCombine
823 +            (CompletableFuture<T> f,
824 +             CompletionStage<? extends U> g,
825 +             BiFunction<? super T,? super U,? extends V> a);
826 +        public abstract <T> CompletableFuture<Void> runAfterEither
827 +            (CompletableFuture<T> f,
828 +             CompletionStage<?> g,
829 +             java.lang.Runnable a);
830 +        public abstract <T> CompletableFuture<Void> acceptEither
831 +            (CompletableFuture<T> f,
832 +             CompletionStage<? extends T> g,
833 +             Consumer<? super T> a);
834 +        public abstract <T,U> CompletableFuture<U> applyToEither
835 +            (CompletableFuture<T> f,
836 +             CompletionStage<? extends T> g,
837 +             Function<? super T,U> a);
838 +    }
839 +
840 +    /**
841 +     * exceptionally action is not invoked when source completes
842 +     * normally, and source result is propagated
843 +     */
844 +    public void testExceptionally_normalCompletion() {
845 +        for (boolean createIncomplete : new boolean[] { true, false })
846 +        for (Integer v1 : new Integer[] { 1, null })
847 +    {
848 +        final AtomicInteger a = new AtomicInteger(0);
849 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
850 +        if (!createIncomplete) assertTrue(f.complete(v1));
851 +        final CompletableFuture<Integer> g = f.exceptionally
852 +            ((Throwable t) -> {
853 +                // Should not be called
854 +                a.getAndIncrement();
855 +                throw new AssertionError();
856 +            });
857 +        if (createIncomplete) assertTrue(f.complete(v1));
858 +
859 +        checkCompletedNormally(g, v1);
860 +        checkCompletedNormally(f, v1);
861 +        assertEquals(0, a.get());
862 +    }}
863 +
864 +    /**
865 +     * exceptionally action completes with function value on source
866 +     * exception
867 +     */
868 +    public void testExceptionally_exceptionalCompletion() {
869 +        for (boolean createIncomplete : new boolean[] { true, false })
870 +        for (Integer v1 : new Integer[] { 1, null })
871 +    {
872 +        final AtomicInteger a = new AtomicInteger(0);
873 +        final CFException ex = new CFException();
874 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
875 +        if (!createIncomplete) f.completeExceptionally(ex);
876 +        final CompletableFuture<Integer> g = f.exceptionally
877 +            ((Throwable t) -> {
878 +                ExecutionMode.DEFAULT.checkExecutionMode();
879 +                threadAssertSame(t, ex);
880 +                a.getAndIncrement();
881 +                return v1;
882 +            });
883 +        if (createIncomplete) f.completeExceptionally(ex);
884 +
885 +        checkCompletedNormally(g, v1);
886 +        assertEquals(1, a.get());
887 +    }}
888 +
889 +    public void testExceptionally_exceptionalCompletionActionFailed() {
890 +        for (boolean createIncomplete : new boolean[] { true, false })
891 +        for (Integer v1 : new Integer[] { 1, null })
892 +    {
893 +        final AtomicInteger a = new AtomicInteger(0);
894 +        final CFException ex1 = new CFException();
895 +        final CFException ex2 = new CFException();
896 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
897 +        if (!createIncomplete) f.completeExceptionally(ex1);
898 +        final CompletableFuture<Integer> g = f.exceptionally
899 +            ((Throwable t) -> {
900 +                ExecutionMode.DEFAULT.checkExecutionMode();
901 +                threadAssertSame(t, ex1);
902 +                a.getAndIncrement();
903 +                throw ex2;
904 +            });
905 +        if (createIncomplete) f.completeExceptionally(ex1);
906 +
907 +        checkCompletedWithWrappedException(g, ex2);
908 +        assertEquals(1, a.get());
909 +    }}
910 +
911 +    /**
912 +     * whenComplete action executes on normal completion, propagating
913 +     * source result.
914 +     */
915 +    public void testWhenComplete_normalCompletion1() {
916 +        for (ExecutionMode m : ExecutionMode.values())
917 +        for (boolean createIncomplete : new boolean[] { true, false })
918 +        for (Integer v1 : new Integer[] { 1, null })
919 +    {
920 +        final AtomicInteger a = new AtomicInteger(0);
921 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
922 +        if (!createIncomplete) assertTrue(f.complete(v1));
923 +        final CompletableFuture<Integer> g = m.whenComplete
924 +            (f,
925 +             (Integer x, Throwable t) -> {
926 +                m.checkExecutionMode();
927 +                threadAssertSame(x, v1);
928 +                threadAssertNull(t);
929 +                a.getAndIncrement();
930 +            });
931 +        if (createIncomplete) assertTrue(f.complete(v1));
932 +
933 +        checkCompletedNormally(g, v1);
934 +        checkCompletedNormally(f, v1);
935 +        assertEquals(1, a.get());
936 +    }}
937 +
938 +    /**
939 +     * whenComplete action executes on exceptional completion, propagating
940 +     * source result.
941 +     */
942 +    public void testWhenComplete_exceptionalCompletion() {
943 +        for (ExecutionMode m : ExecutionMode.values())
944 +        for (boolean createIncomplete : new boolean[] { true, false })
945 +        for (Integer v1 : new Integer[] { 1, null })
946 +    {
947 +        final AtomicInteger a = new AtomicInteger(0);
948 +        final CFException ex = new CFException();
949 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
950 +        if (!createIncomplete) f.completeExceptionally(ex);
951 +        final CompletableFuture<Integer> g = m.whenComplete
952 +            (f,
953 +             (Integer x, Throwable t) -> {
954 +                m.checkExecutionMode();
955 +                threadAssertNull(x);
956 +                threadAssertSame(t, ex);
957 +                a.getAndIncrement();
958 +            });
959 +        if (createIncomplete) f.completeExceptionally(ex);
960 +
961 +        checkCompletedWithWrappedException(g, ex);
962 +        checkCompletedExceptionally(f, ex);
963 +        assertEquals(1, a.get());
964 +    }}
965 +
966 +    /**
967 +     * whenComplete action executes on cancelled source, propagating
968 +     * CancellationException.
969 +     */
970 +    public void testWhenComplete_sourceCancelled() {
971 +        for (ExecutionMode m : ExecutionMode.values())
972 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
973 +        for (boolean createIncomplete : new boolean[] { true, false })
974 +    {
975 +        final AtomicInteger a = new AtomicInteger(0);
976 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
977 +        if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
978 +        final CompletableFuture<Integer> g = m.whenComplete
979 +            (f,
980 +             (Integer x, Throwable t) -> {
981 +                m.checkExecutionMode();
982 +                threadAssertNull(x);
983 +                threadAssertTrue(t instanceof CancellationException);
984 +                a.getAndIncrement();
985 +            });
986 +        if (createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
987 +
988 +        checkCompletedWithWrappedCancellationException(g);
989 +        checkCancelled(f);
990 +        assertEquals(1, a.get());
991 +    }}
992 +
993 +    /**
994 +     * If a whenComplete action throws an exception when triggered by
995 +     * a normal completion, it completes exceptionally
996 +     */
997 +    public void testWhenComplete_actionFailed() {
998 +        for (boolean createIncomplete : new boolean[] { true, false })
999 +        for (ExecutionMode m : ExecutionMode.values())
1000 +        for (Integer v1 : new Integer[] { 1, null })
1001 +    {
1002 +        final AtomicInteger a = new AtomicInteger(0);
1003 +        final CFException ex = new CFException();
1004 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1005 +        if (!createIncomplete) assertTrue(f.complete(v1));
1006 +        final CompletableFuture<Integer> g = m.whenComplete
1007 +            (f,
1008 +             (Integer x, Throwable t) -> {
1009 +                m.checkExecutionMode();
1010 +                threadAssertSame(x, v1);
1011 +                threadAssertNull(t);
1012 +                a.getAndIncrement();
1013 +                throw ex;
1014 +            });
1015 +        if (createIncomplete) assertTrue(f.complete(v1));
1016 +
1017 +        checkCompletedWithWrappedException(g, ex);
1018 +        checkCompletedNormally(f, v1);
1019 +        assertEquals(1, a.get());
1020 +    }}
1021 +
1022 +    /**
1023 +     * If a whenComplete action throws an exception when triggered by
1024 +     * a source completion that also throws an exception, the source
1025 +     * exception takes precedence.
1026 +     */
1027 +    public void testWhenComplete_actionFailedSourceFailed() {
1028 +        for (boolean createIncomplete : new boolean[] { true, false })
1029 +        for (ExecutionMode m : ExecutionMode.values())
1030 +        for (Integer v1 : new Integer[] { 1, null })
1031 +    {
1032 +        final AtomicInteger a = new AtomicInteger(0);
1033 +        final CFException ex1 = new CFException();
1034 +        final CFException ex2 = new CFException();
1035 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1036 +
1037 +        if (!createIncomplete) f.completeExceptionally(ex1);
1038 +        final CompletableFuture<Integer> g = m.whenComplete
1039 +            (f,
1040 +             (Integer x, Throwable t) -> {
1041 +                m.checkExecutionMode();
1042 +                threadAssertSame(t, ex1);
1043 +                threadAssertNull(x);
1044 +                a.getAndIncrement();
1045 +                throw ex2;
1046 +            });
1047 +        if (createIncomplete) f.completeExceptionally(ex1);
1048 +
1049 +        checkCompletedWithWrappedException(g, ex1);
1050 +        checkCompletedExceptionally(f, ex1);
1051 +        assertEquals(1, a.get());
1052 +    }}
1053 +
1054 +    /**
1055 +     * handle action completes normally with function value on normal
1056 +     * completion of source
1057 +     */
1058 +    public void testHandle_normalCompletion() {
1059 +        for (ExecutionMode m : ExecutionMode.values())
1060 +        for (boolean createIncomplete : new boolean[] { true, false })
1061 +        for (Integer v1 : new Integer[] { 1, null })
1062 +    {
1063 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1064 +        final AtomicInteger a = new AtomicInteger(0);
1065 +        if (!createIncomplete) assertTrue(f.complete(v1));
1066 +        final CompletableFuture<Integer> g = m.handle
1067 +            (f,
1068 +             (Integer x, Throwable t) -> {
1069 +                m.checkExecutionMode();
1070 +                threadAssertSame(x, v1);
1071 +                threadAssertNull(t);
1072 +                a.getAndIncrement();
1073 +                return inc(v1);
1074 +            });
1075 +        if (createIncomplete) assertTrue(f.complete(v1));
1076 +
1077 +        checkCompletedNormally(g, inc(v1));
1078 +        checkCompletedNormally(f, v1);
1079 +        assertEquals(1, a.get());
1080 +    }}
1081 +
1082 +    /**
1083 +     * handle action completes normally with function value on
1084 +     * exceptional completion of source
1085 +     */
1086 +    public void testHandle_exceptionalCompletion() {
1087 +        for (ExecutionMode m : ExecutionMode.values())
1088 +        for (boolean createIncomplete : new boolean[] { true, false })
1089 +        for (Integer v1 : new Integer[] { 1, null })
1090 +    {
1091 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1092 +        final AtomicInteger a = new AtomicInteger(0);
1093 +        final CFException ex = new CFException();
1094 +        if (!createIncomplete) f.completeExceptionally(ex);
1095 +        final CompletableFuture<Integer> g = m.handle
1096 +            (f,
1097 +             (Integer x, Throwable t) -> {
1098 +                m.checkExecutionMode();
1099 +                threadAssertNull(x);
1100 +                threadAssertSame(t, ex);
1101 +                a.getAndIncrement();
1102 +                return v1;
1103 +            });
1104 +        if (createIncomplete) f.completeExceptionally(ex);
1105 +
1106 +        checkCompletedNormally(g, v1);
1107 +        checkCompletedExceptionally(f, ex);
1108 +        assertEquals(1, a.get());
1109 +    }}
1110 +
1111 +    /**
1112 +     * handle action completes normally with function value on
1113 +     * cancelled source
1114 +     */
1115 +    public void testHandle_sourceCancelled() {
1116 +        for (ExecutionMode m : ExecutionMode.values())
1117 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1118 +        for (boolean createIncomplete : new boolean[] { true, false })
1119 +        for (Integer v1 : new Integer[] { 1, null })
1120 +    {
1121 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1122 +        final AtomicInteger a = new AtomicInteger(0);
1123 +        if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
1124 +        final CompletableFuture<Integer> g = m.handle
1125 +            (f,
1126 +             (Integer x, Throwable t) -> {
1127 +                m.checkExecutionMode();
1128 +                threadAssertNull(x);
1129 +                threadAssertTrue(t instanceof CancellationException);
1130 +                a.getAndIncrement();
1131 +                return v1;
1132 +            });
1133 +        if (createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
1134 +
1135 +        checkCompletedNormally(g, v1);
1136 +        checkCancelled(f);
1137 +        assertEquals(1, a.get());
1138 +    }}
1139 +
1140 +    /**
1141 +     * handle result completes exceptionally if action does
1142 +     */
1143 +    public void testHandle_sourceFailedActionFailed() {
1144 +        for (ExecutionMode m : ExecutionMode.values())
1145 +        for (boolean createIncomplete : new boolean[] { true, false })
1146 +    {
1147 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1148 +        final AtomicInteger a = new AtomicInteger(0);
1149 +        final CFException ex1 = new CFException();
1150 +        final CFException ex2 = new CFException();
1151 +        if (!createIncomplete) f.completeExceptionally(ex1);
1152 +        final CompletableFuture<Integer> g = m.handle
1153 +            (f,
1154 +             (Integer x, Throwable t) -> {
1155 +                m.checkExecutionMode();
1156 +                threadAssertNull(x);
1157 +                threadAssertSame(ex1, t);
1158 +                a.getAndIncrement();
1159 +                throw ex2;
1160 +            });
1161 +        if (createIncomplete) f.completeExceptionally(ex1);
1162 +
1163 +        checkCompletedWithWrappedException(g, ex2);
1164 +        checkCompletedExceptionally(f, ex1);
1165 +        assertEquals(1, a.get());
1166 +    }}
1167 +
1168 +    public void testHandle_sourceCompletedNormallyActionFailed() {
1169 +        for (ExecutionMode m : ExecutionMode.values())
1170 +        for (boolean createIncomplete : new boolean[] { true, false })
1171 +        for (Integer v1 : new Integer[] { 1, null })
1172 +    {
1173 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1174 +        final AtomicInteger a = new AtomicInteger(0);
1175 +        final CFException ex = new CFException();
1176 +        if (!createIncomplete) assertTrue(f.complete(v1));
1177 +        final CompletableFuture<Integer> g = m.handle
1178 +            (f,
1179 +             (Integer x, Throwable t) -> {
1180 +                m.checkExecutionMode();
1181 +                threadAssertSame(x, v1);
1182 +                threadAssertNull(t);
1183 +                a.getAndIncrement();
1184 +                throw ex;
1185 +            });
1186 +        if (createIncomplete) assertTrue(f.complete(v1));
1187 +
1188 +        checkCompletedWithWrappedException(g, ex);
1189 +        checkCompletedNormally(f, v1);
1190 +        assertEquals(1, a.get());
1191 +    }}
1192 +
1193 +    /**
1194 +     * runAsync completes after running Runnable
1195 +     */
1196 +    public void testRunAsync_normalCompletion() {
1197 +        ExecutionMode[] executionModes = {
1198 +            ExecutionMode.ASYNC,
1199 +            ExecutionMode.EXECUTOR,
1200 +        };
1201 +        for (ExecutionMode m : executionModes)
1202 +    {
1203 +        final Noop r = new Noop(m);
1204 +        final CompletableFuture<Void> f = m.runAsync(r);
1205 +        assertNull(f.join());
1206 +        checkCompletedNormally(f, null);
1207 +        r.assertInvoked();
1208 +    }}
1209 +
1210 +    /**
1211 +     * failing runAsync completes exceptionally after running Runnable
1212 +     */
1213 +    public void testRunAsync_exceptionalCompletion() {
1214 +        ExecutionMode[] executionModes = {
1215 +            ExecutionMode.ASYNC,
1216 +            ExecutionMode.EXECUTOR,
1217 +        };
1218 +        for (ExecutionMode m : executionModes)
1219 +    {
1220 +        final FailingRunnable r = new FailingRunnable(m);
1221 +        final CompletableFuture<Void> f = m.runAsync(r);
1222 +        checkCompletedWithWrappedCFException(f);
1223 +        r.assertInvoked();
1224 +    }}
1225 +
1226 +    /**
1227 +     * supplyAsync completes with result of supplier
1228 +     */
1229 +    public void testSupplyAsync_normalCompletion() {
1230 +        ExecutionMode[] executionModes = {
1231 +            ExecutionMode.ASYNC,
1232 +            ExecutionMode.EXECUTOR,
1233 +        };
1234 +        for (ExecutionMode m : executionModes)
1235 +        for (Integer v1 : new Integer[] { 1, null })
1236 +    {
1237 +        final IntegerSupplier r = new IntegerSupplier(m, v1);
1238 +        final CompletableFuture<Integer> f = m.supplyAsync(r);
1239 +        assertSame(v1, f.join());
1240 +        checkCompletedNormally(f, v1);
1241 +        r.assertInvoked();
1242 +    }}
1243 +
1244 +    /**
1245 +     * Failing supplyAsync completes exceptionally
1246 +     */
1247 +    public void testSupplyAsync_exceptionalCompletion() {
1248 +        ExecutionMode[] executionModes = {
1249 +            ExecutionMode.ASYNC,
1250 +            ExecutionMode.EXECUTOR,
1251 +        };
1252 +        for (ExecutionMode m : executionModes)
1253 +    {
1254 +        FailingSupplier r = new FailingSupplier(m);
1255 +        CompletableFuture<Integer> f = m.supplyAsync(r);
1256 +        checkCompletedWithWrappedCFException(f);
1257 +        r.assertInvoked();
1258 +    }}
1259 +
1260 +    // seq completion methods
1261 +
1262 +    /**
1263 +     * thenRun result completes normally after normal completion of source
1264 +     */
1265 +    public void testThenRun_normalCompletion() {
1266 +        for (ExecutionMode m : ExecutionMode.values())
1267 +        for (Integer v1 : new Integer[] { 1, null })
1268 +    {
1269 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1270 +        final Noop[] rs = new Noop[6];
1271 +        for (int i = 0; i < rs.length; i++) rs[i] = new Noop(m);
1272 +
1273 +        final CompletableFuture<Void> h0 = m.thenRun(f, rs[0]);
1274 +        final CompletableFuture<Void> h1 = m.runAfterBoth(f, f, rs[1]);
1275 +        final CompletableFuture<Void> h2 = m.runAfterEither(f, f, rs[2]);
1276 +        checkIncomplete(h0);
1277 +        checkIncomplete(h1);
1278 +        checkIncomplete(h2);
1279 +        assertTrue(f.complete(v1));
1280 +        final CompletableFuture<Void> h3 = m.thenRun(f, rs[3]);
1281 +        final CompletableFuture<Void> h4 = m.runAfterBoth(f, f, rs[4]);
1282 +        final CompletableFuture<Void> h5 = m.runAfterEither(f, f, rs[5]);
1283 +
1284 +        checkCompletedNormally(h0, null);
1285 +        checkCompletedNormally(h1, null);
1286 +        checkCompletedNormally(h2, null);
1287 +        checkCompletedNormally(h3, null);
1288 +        checkCompletedNormally(h4, null);
1289 +        checkCompletedNormally(h5, null);
1290 +        checkCompletedNormally(f, v1);
1291 +        for (Noop r : rs) r.assertInvoked();
1292 +    }}
1293 +
1294 +    /**
1295 +     * thenRun result completes exceptionally after exceptional
1296 +     * completion of source
1297 +     */
1298 +    public void testThenRun_exceptionalCompletion() {
1299 +        for (ExecutionMode m : ExecutionMode.values())
1300 +    {
1301 +        final CFException ex = new CFException();
1302 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1303 +        final Noop[] rs = new Noop[6];
1304 +        for (int i = 0; i < rs.length; i++) rs[i] = new Noop(m);
1305 +
1306 +        final CompletableFuture<Void> h0 = m.thenRun(f, rs[0]);
1307 +        final CompletableFuture<Void> h1 = m.runAfterBoth(f, f, rs[1]);
1308 +        final CompletableFuture<Void> h2 = m.runAfterEither(f, f, rs[2]);
1309 +        checkIncomplete(h0);
1310 +        checkIncomplete(h1);
1311 +        checkIncomplete(h2);
1312 +        assertTrue(f.completeExceptionally(ex));
1313 +        final CompletableFuture<Void> h3 = m.thenRun(f, rs[3]);
1314 +        final CompletableFuture<Void> h4 = m.runAfterBoth(f, f, rs[4]);
1315 +        final CompletableFuture<Void> h5 = m.runAfterEither(f, f, rs[5]);
1316 +
1317 +        checkCompletedWithWrappedException(h0, ex);
1318 +        checkCompletedWithWrappedException(h1, ex);
1319 +        checkCompletedWithWrappedException(h2, ex);
1320 +        checkCompletedWithWrappedException(h3, ex);
1321 +        checkCompletedWithWrappedException(h4, ex);
1322 +        checkCompletedWithWrappedException(h5, ex);
1323 +        checkCompletedExceptionally(f, ex);
1324 +        for (Noop r : rs) r.assertNotInvoked();
1325 +    }}
1326 +
1327 +    /**
1328 +     * thenRun result completes exceptionally if source cancelled
1329 +     */
1330 +    public void testThenRun_sourceCancelled() {
1331 +        for (ExecutionMode m : ExecutionMode.values())
1332 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1333 +    {
1334 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1335 +        final Noop[] rs = new Noop[6];
1336 +        for (int i = 0; i < rs.length; i++) rs[i] = new Noop(m);
1337 +
1338 +        final CompletableFuture<Void> h0 = m.thenRun(f, rs[0]);
1339 +        final CompletableFuture<Void> h1 = m.runAfterBoth(f, f, rs[1]);
1340 +        final CompletableFuture<Void> h2 = m.runAfterEither(f, f, rs[2]);
1341 +        checkIncomplete(h0);
1342 +        checkIncomplete(h1);
1343 +        checkIncomplete(h2);
1344 +        assertTrue(f.cancel(mayInterruptIfRunning));
1345 +        final CompletableFuture<Void> h3 = m.thenRun(f, rs[3]);
1346 +        final CompletableFuture<Void> h4 = m.runAfterBoth(f, f, rs[4]);
1347 +        final CompletableFuture<Void> h5 = m.runAfterEither(f, f, rs[5]);
1348 +
1349 +        checkCompletedWithWrappedCancellationException(h0);
1350 +        checkCompletedWithWrappedCancellationException(h1);
1351 +        checkCompletedWithWrappedCancellationException(h2);
1352 +        checkCompletedWithWrappedCancellationException(h3);
1353 +        checkCompletedWithWrappedCancellationException(h4);
1354 +        checkCompletedWithWrappedCancellationException(h5);
1355 +        checkCancelled(f);
1356 +        for (Noop r : rs) r.assertNotInvoked();
1357 +    }}
1358 +
1359 +    /**
1360 +     * thenRun result completes exceptionally if action does
1361 +     */
1362 +    public void testThenRun_actionFailed() {
1363 +        for (ExecutionMode m : ExecutionMode.values())
1364 +        for (Integer v1 : new Integer[] { 1, null })
1365 +    {
1366 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1367 +        final FailingRunnable[] rs = new FailingRunnable[6];
1368 +        for (int i = 0; i < rs.length; i++) rs[i] = new FailingRunnable(m);
1369 +
1370 +        final CompletableFuture<Void> h0 = m.thenRun(f, rs[0]);
1371 +        final CompletableFuture<Void> h1 = m.runAfterBoth(f, f, rs[1]);
1372 +        final CompletableFuture<Void> h2 = m.runAfterEither(f, f, rs[2]);
1373 +        assertTrue(f.complete(v1));
1374 +        final CompletableFuture<Void> h3 = m.thenRun(f, rs[3]);
1375 +        final CompletableFuture<Void> h4 = m.runAfterBoth(f, f, rs[4]);
1376 +        final CompletableFuture<Void> h5 = m.runAfterEither(f, f, rs[5]);
1377 +
1378 +        checkCompletedWithWrappedCFException(h0);
1379 +        checkCompletedWithWrappedCFException(h1);
1380 +        checkCompletedWithWrappedCFException(h2);
1381 +        checkCompletedWithWrappedCFException(h3);
1382 +        checkCompletedWithWrappedCFException(h4);
1383 +        checkCompletedWithWrappedCFException(h5);
1384 +        checkCompletedNormally(f, v1);
1385 +    }}
1386 +
1387 +    /**
1388 +     * thenApply result completes normally after normal completion of source
1389 +     */
1390 +    public void testThenApply_normalCompletion() {
1391 +        for (ExecutionMode m : ExecutionMode.values())
1392 +        for (Integer v1 : new Integer[] { 1, null })
1393 +    {
1394 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1395 +        final IncFunction[] rs = new IncFunction[4];
1396 +        for (int i = 0; i < rs.length; i++) rs[i] = new IncFunction(m);
1397 +
1398 +        final CompletableFuture<Integer> h0 = m.thenApply(f, rs[0]);
1399 +        final CompletableFuture<Integer> h1 = m.applyToEither(f, f, rs[1]);
1400 +        checkIncomplete(h0);
1401 +        checkIncomplete(h1);
1402 +        assertTrue(f.complete(v1));
1403 +        final CompletableFuture<Integer> h2 = m.thenApply(f, rs[2]);
1404 +        final CompletableFuture<Integer> h3 = m.applyToEither(f, f, rs[3]);
1405 +
1406 +        checkCompletedNormally(h0, inc(v1));
1407 +        checkCompletedNormally(h1, inc(v1));
1408 +        checkCompletedNormally(h2, inc(v1));
1409 +        checkCompletedNormally(h3, inc(v1));
1410 +        checkCompletedNormally(f, v1);
1411 +        for (IncFunction r : rs) r.assertValue(inc(v1));
1412 +    }}
1413 +
1414 +    /**
1415 +     * thenApply result completes exceptionally after exceptional
1416 +     * completion of source
1417 +     */
1418 +    public void testThenApply_exceptionalCompletion() {
1419 +        for (ExecutionMode m : ExecutionMode.values())
1420 +    {
1421 +        final CFException ex = new CFException();
1422 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1423 +        final IncFunction[] rs = new IncFunction[4];
1424 +        for (int i = 0; i < rs.length; i++) rs[i] = new IncFunction(m);
1425 +
1426 +        final CompletableFuture<Integer> h0 = m.thenApply(f, rs[0]);
1427 +        final CompletableFuture<Integer> h1 = m.applyToEither(f, f, rs[1]);
1428 +        assertTrue(f.completeExceptionally(ex));
1429 +        final CompletableFuture<Integer> h2 = m.thenApply(f, rs[2]);
1430 +        final CompletableFuture<Integer> h3 = m.applyToEither(f, f, rs[3]);
1431 +
1432 +        checkCompletedWithWrappedException(h0, ex);
1433 +        checkCompletedWithWrappedException(h1, ex);
1434 +        checkCompletedWithWrappedException(h2, ex);
1435 +        checkCompletedWithWrappedException(h3, ex);
1436 +        checkCompletedExceptionally(f, ex);
1437 +        for (IncFunction r : rs) r.assertNotInvoked();
1438 +    }}
1439 +
1440 +    /**
1441 +     * thenApply result completes exceptionally if source cancelled
1442 +     */
1443 +    public void testThenApply_sourceCancelled() {
1444 +        for (ExecutionMode m : ExecutionMode.values())
1445 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1446 +    {
1447 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1448 +        final IncFunction[] rs = new IncFunction[4];
1449 +        for (int i = 0; i < rs.length; i++) rs[i] = new IncFunction(m);
1450 +
1451 +        final CompletableFuture<Integer> h0 = m.thenApply(f, rs[0]);
1452 +        final CompletableFuture<Integer> h1 = m.applyToEither(f, f, rs[1]);
1453 +        assertTrue(f.cancel(mayInterruptIfRunning));
1454 +        final CompletableFuture<Integer> h2 = m.thenApply(f, rs[2]);
1455 +        final CompletableFuture<Integer> h3 = m.applyToEither(f, f, rs[3]);
1456 +
1457 +        checkCompletedWithWrappedCancellationException(h0);
1458 +        checkCompletedWithWrappedCancellationException(h1);
1459 +        checkCompletedWithWrappedCancellationException(h2);
1460 +        checkCompletedWithWrappedCancellationException(h3);
1461 +        checkCancelled(f);
1462 +        for (IncFunction r : rs) r.assertNotInvoked();
1463 +    }}
1464 +
1465 +    /**
1466 +     * thenApply result completes exceptionally if action does
1467 +     */
1468 +    public void testThenApply_actionFailed() {
1469 +        for (ExecutionMode m : ExecutionMode.values())
1470 +        for (Integer v1 : new Integer[] { 1, null })
1471 +    {
1472 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1473 +        final FailingFunction[] rs = new FailingFunction[4];
1474 +        for (int i = 0; i < rs.length; i++) rs[i] = new FailingFunction(m);
1475 +
1476 +        final CompletableFuture<Integer> h0 = m.thenApply(f, rs[0]);
1477 +        final CompletableFuture<Integer> h1 = m.applyToEither(f, f, rs[1]);
1478 +        assertTrue(f.complete(v1));
1479 +        final CompletableFuture<Integer> h2 = m.thenApply(f, rs[2]);
1480 +        final CompletableFuture<Integer> h3 = m.applyToEither(f, f, rs[3]);
1481 +
1482 +        checkCompletedWithWrappedCFException(h0);
1483 +        checkCompletedWithWrappedCFException(h1);
1484 +        checkCompletedWithWrappedCFException(h2);
1485 +        checkCompletedWithWrappedCFException(h3);
1486 +        checkCompletedNormally(f, v1);
1487 +    }}
1488 +
1489 +    /**
1490 +     * thenAccept result completes normally after normal completion of source
1491 +     */
1492 +    public void testThenAccept_normalCompletion() {
1493 +        for (ExecutionMode m : ExecutionMode.values())
1494 +        for (boolean createIncomplete : new boolean[] { true, false })
1495 +        for (Integer v1 : new Integer[] { 1, null })
1496 +    {
1497 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1498 +        final NoopConsumer r = new NoopConsumer(m);
1499 +        if (!createIncomplete) assertTrue(f.complete(v1));
1500 +        final CompletableFuture<Void> g = m.thenAccept(f, r);
1501 +        if (createIncomplete) {
1502 +            checkIncomplete(g);
1503 +            assertTrue(f.complete(v1));
1504 +        }
1505 +
1506 +        checkCompletedNormally(g, null);
1507 +        r.assertValue(v1);
1508 +        checkCompletedNormally(f, v1);
1509 +    }}
1510 +
1511 +    /**
1512 +     * thenAccept result completes exceptionally after exceptional
1513 +     * completion of source
1514 +     */
1515 +    public void testThenAccept_exceptionalCompletion() {
1516 +        for (ExecutionMode m : ExecutionMode.values())
1517 +        for (boolean createIncomplete : new boolean[] { true, false })
1518 +    {
1519 +        final CFException ex = new CFException();
1520 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1521 +        final NoopConsumer r = new NoopConsumer(m);
1522 +        if (!createIncomplete) f.completeExceptionally(ex);
1523 +        final CompletableFuture<Void> g = m.thenAccept(f, r);
1524 +        if (createIncomplete) {
1525 +            checkIncomplete(g);
1526 +            f.completeExceptionally(ex);
1527 +        }
1528 +
1529 +        checkCompletedWithWrappedException(g, ex);
1530 +        checkCompletedExceptionally(f, ex);
1531 +        r.assertNotInvoked();
1532 +    }}
1533 +
1534 +    /**
1535 +     * thenAccept result completes exceptionally if source cancelled
1536 +     */
1537 +    public void testThenAccept_sourceCancelled() {
1538 +        for (ExecutionMode m : ExecutionMode.values())
1539 +        for (boolean createIncomplete : new boolean[] { true, false })
1540 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1541 +    {
1542 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1543 +        final NoopConsumer r = new NoopConsumer(m);
1544 +        if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
1545 +        final CompletableFuture<Void> g = m.thenAccept(f, r);
1546 +        if (createIncomplete) {
1547 +            checkIncomplete(g);
1548 +            assertTrue(f.cancel(mayInterruptIfRunning));
1549 +        }
1550 +
1551 +        checkCompletedWithWrappedCancellationException(g);
1552 +        checkCancelled(f);
1553 +        r.assertNotInvoked();
1554 +    }}
1555 +
1556 +    /**
1557 +     * thenAccept result completes exceptionally if action does
1558 +     */
1559 +    public void testThenAccept_actionFailed() {
1560 +        for (ExecutionMode m : ExecutionMode.values())
1561 +        for (boolean createIncomplete : new boolean[] { true, false })
1562 +        for (Integer v1 : new Integer[] { 1, null })
1563 +    {
1564 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1565 +        final FailingConsumer r = new FailingConsumer(m);
1566 +        if (!createIncomplete) f.complete(v1);
1567 +        final CompletableFuture<Void> g = m.thenAccept(f, r);
1568 +        if (createIncomplete) {
1569 +            checkIncomplete(g);
1570 +            f.complete(v1);
1571 +        }
1572 +
1573 +        checkCompletedWithWrappedCFException(g);
1574 +        checkCompletedNormally(f, v1);
1575 +    }}
1576 +
1577 +    /**
1578 +     * thenCombine result completes normally after normal completion
1579 +     * of sources
1580 +     */
1581 +    public void testThenCombine_normalCompletion() {
1582 +        for (ExecutionMode m : ExecutionMode.values())
1583 +        for (boolean fFirst : new boolean[] { true, false })
1584 +        for (Integer v1 : new Integer[] { 1, null })
1585 +        for (Integer v2 : new Integer[] { 2, null })
1586 +    {
1587 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1588 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1589 +        final SubtractFunction r1 = new SubtractFunction(m);
1590 +        final SubtractFunction r2 = new SubtractFunction(m);
1591 +        final SubtractFunction r3 = new SubtractFunction(m);
1592 +
1593 +        final CompletableFuture<Integer> fst =  fFirst ? f : g;
1594 +        final CompletableFuture<Integer> snd = !fFirst ? f : g;
1595 +        final Integer w1 =  fFirst ? v1 : v2;
1596 +        final Integer w2 = !fFirst ? v1 : v2;
1597 +
1598 +        final CompletableFuture<Integer> h1 = m.thenCombine(f, g, r1);
1599 +        assertTrue(fst.complete(w1));
1600 +        final CompletableFuture<Integer> h2 = m.thenCombine(f, g, r2);
1601 +        checkIncomplete(h1);
1602 +        checkIncomplete(h2);
1603 +        r1.assertNotInvoked();
1604 +        r2.assertNotInvoked();
1605 +        assertTrue(snd.complete(w2));
1606 +        final CompletableFuture<Integer> h3 = m.thenCombine(f, g, r3);
1607 +
1608 +        checkCompletedNormally(h1, 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));
1614 +        checkCompletedNormally(f, v1);
1615 +        checkCompletedNormally(g, v2);
1616 +    }}
1617 +
1618 +    /**
1619 +     * thenCombine result completes exceptionally after exceptional
1620 +     * completion of either source
1621 +     */
1622 +    public void testThenCombine_exceptionalCompletion() throws Throwable {
1623 +        for (ExecutionMode m : ExecutionMode.values())
1624 +        for (boolean fFirst : new boolean[] { true, false })
1625 +        for (boolean failFirst : new boolean[] { true, false })
1626 +        for (Integer v1 : new Integer[] { 1, null })
1627 +    {
1628 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1629 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1630 +        final CFException ex = new CFException();
1631 +        final SubtractFunction r1 = new SubtractFunction(m);
1632 +        final SubtractFunction r2 = new SubtractFunction(m);
1633 +        final SubtractFunction r3 = new SubtractFunction(m);
1634 +
1635 +        final CompletableFuture<Integer> fst =  fFirst ? f : g;
1636 +        final CompletableFuture<Integer> snd = !fFirst ? f : g;
1637 +        final Callable<Boolean> complete1 = failFirst ?
1638 +            () -> fst.completeExceptionally(ex) :
1639 +            () -> fst.complete(v1);
1640 +        final Callable<Boolean> complete2 = failFirst ?
1641 +            () -> snd.complete(v1) :
1642 +            () -> snd.completeExceptionally(ex);
1643 +
1644 +        final CompletableFuture<Integer> h1 = m.thenCombine(f, g, r1);
1645 +        assertTrue(complete1.call());
1646 +        final CompletableFuture<Integer> h2 = m.thenCombine(f, g, r2);
1647 +        checkIncomplete(h1);
1648 +        checkIncomplete(h2);
1649 +        assertTrue(complete2.call());
1650 +        final CompletableFuture<Integer> h3 = m.thenCombine(f, g, r3);
1651 +
1652 +        checkCompletedWithWrappedException(h1, ex);
1653 +        checkCompletedWithWrappedException(h2, ex);
1654 +        checkCompletedWithWrappedException(h3, ex);
1655 +        r1.assertNotInvoked();
1656 +        r2.assertNotInvoked();
1657 +        r3.assertNotInvoked();
1658 +        checkCompletedNormally(failFirst ? snd : fst, v1);
1659 +        checkCompletedExceptionally(failFirst ? fst : snd, ex);
1660 +    }}
1661 +
1662 +    /**
1663 +     * thenCombine result completes exceptionally if either source cancelled
1664 +     */
1665 +    public void testThenCombine_sourceCancelled() throws Throwable {
1666 +        for (ExecutionMode m : ExecutionMode.values())
1667 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1668 +        for (boolean fFirst : new boolean[] { true, false })
1669 +        for (boolean failFirst : new boolean[] { true, false })
1670 +        for (Integer v1 : new Integer[] { 1, null })
1671 +    {
1672 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1673 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1674 +        final SubtractFunction r1 = new SubtractFunction(m);
1675 +        final SubtractFunction r2 = new SubtractFunction(m);
1676 +        final SubtractFunction r3 = new SubtractFunction(m);
1677 +
1678 +        final CompletableFuture<Integer> fst =  fFirst ? f : g;
1679 +        final CompletableFuture<Integer> snd = !fFirst ? f : g;
1680 +        final Callable<Boolean> complete1 = failFirst ?
1681 +            () -> fst.cancel(mayInterruptIfRunning) :
1682 +            () -> fst.complete(v1);
1683 +        final Callable<Boolean> complete2 = failFirst ?
1684 +            () -> snd.complete(v1) :
1685 +            () -> snd.cancel(mayInterruptIfRunning);
1686 +
1687 +        final CompletableFuture<Integer> h1 = m.thenCombine(f, g, r1);
1688 +        assertTrue(complete1.call());
1689 +        final CompletableFuture<Integer> h2 = m.thenCombine(f, g, r2);
1690 +        checkIncomplete(h1);
1691 +        checkIncomplete(h2);
1692 +        assertTrue(complete2.call());
1693 +        final CompletableFuture<Integer> h3 = m.thenCombine(f, g, r3);
1694 +
1695 +        checkCompletedWithWrappedCancellationException(h1);
1696 +        checkCompletedWithWrappedCancellationException(h2);
1697 +        checkCompletedWithWrappedCancellationException(h3);
1698 +        r1.assertNotInvoked();
1699 +        r2.assertNotInvoked();
1700 +        r3.assertNotInvoked();
1701 +        checkCompletedNormally(failFirst ? snd : fst, v1);
1702 +        checkCancelled(failFirst ? fst : snd);
1703 +    }}
1704 +
1705 +    /**
1706 +     * thenCombine result completes exceptionally if action does
1707 +     */
1708 +    public void testThenCombine_actionFailed() {
1709 +        for (ExecutionMode m : ExecutionMode.values())
1710 +        for (boolean fFirst : new boolean[] { true, false })
1711 +        for (Integer v1 : new Integer[] { 1, null })
1712 +        for (Integer v2 : new Integer[] { 2, null })
1713 +    {
1714 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1715 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1716 +        final FailingBiFunction r1 = new FailingBiFunction(m);
1717 +        final FailingBiFunction r2 = new FailingBiFunction(m);
1718 +        final FailingBiFunction r3 = new FailingBiFunction(m);
1719 +
1720 +        final CompletableFuture<Integer> fst =  fFirst ? f : g;
1721 +        final CompletableFuture<Integer> snd = !fFirst ? f : g;
1722 +        final Integer w1 =  fFirst ? v1 : v2;
1723 +        final Integer w2 = !fFirst ? v1 : v2;
1724 +
1725 +        final CompletableFuture<Integer> h1 = m.thenCombine(f, g, r1);
1726 +        assertTrue(fst.complete(w1));
1727 +        final CompletableFuture<Integer> h2 = m.thenCombine(f, g, r2);
1728 +        assertTrue(snd.complete(w2));
1729 +        final CompletableFuture<Integer> h3 = m.thenCombine(f, g, r3);
1730 +
1731 +        checkCompletedWithWrappedCFException(h1);
1732 +        checkCompletedWithWrappedCFException(h2);
1733 +        checkCompletedWithWrappedCFException(h3);
1734 +        r1.assertInvoked();
1735 +        r2.assertInvoked();
1736 +        r3.assertInvoked();
1737 +        checkCompletedNormally(f, v1);
1738 +        checkCompletedNormally(g, v2);
1739 +    }}
1740 +
1741 +    /**
1742 +     * thenAcceptBoth result completes normally after normal
1743 +     * completion of sources
1744 +     */
1745 +    public void testThenAcceptBoth_normalCompletion() {
1746 +        for (ExecutionMode m : ExecutionMode.values())
1747 +        for (boolean fFirst : new boolean[] { true, false })
1748 +        for (Integer v1 : new Integer[] { 1, null })
1749 +        for (Integer v2 : new Integer[] { 2, null })
1750 +    {
1751 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1752 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1753 +        final SubtractAction r1 = new SubtractAction(m);
1754 +        final SubtractAction r2 = new SubtractAction(m);
1755 +        final SubtractAction r3 = new SubtractAction(m);
1756 +
1757 +        final CompletableFuture<Integer> fst =  fFirst ? f : g;
1758 +        final CompletableFuture<Integer> snd = !fFirst ? f : g;
1759 +        final Integer w1 =  fFirst ? v1 : v2;
1760 +        final Integer w2 = !fFirst ? v1 : v2;
1761 +
1762 +        final CompletableFuture<Void> h1 = m.thenAcceptBoth(f, g, r1);
1763 +        assertTrue(fst.complete(w1));
1764 +        final CompletableFuture<Void> h2 = m.thenAcceptBoth(f, g, r2);
1765 +        checkIncomplete(h1);
1766 +        checkIncomplete(h2);
1767 +        r1.assertNotInvoked();
1768 +        r2.assertNotInvoked();
1769 +        assertTrue(snd.complete(w2));
1770 +        final CompletableFuture<Void> h3 = m.thenAcceptBoth(f, g, r3);
1771 +
1772 +        checkCompletedNormally(h1, null);
1773 +        checkCompletedNormally(h2, null);
1774 +        checkCompletedNormally(h3, null);
1775 +        r1.assertValue(subtract(v1, v2));
1776 +        r2.assertValue(subtract(v1, v2));
1777 +        r3.assertValue(subtract(v1, v2));
1778 +        checkCompletedNormally(f, v1);
1779 +        checkCompletedNormally(g, v2);
1780 +    }}
1781 +
1782 +    /**
1783 +     * thenAcceptBoth result completes exceptionally after exceptional
1784 +     * completion of either source
1785 +     */
1786 +    public void testThenAcceptBoth_exceptionalCompletion() throws Throwable {
1787 +        for (ExecutionMode m : ExecutionMode.values())
1788 +        for (boolean fFirst : new boolean[] { true, false })
1789 +        for (boolean failFirst : new boolean[] { true, false })
1790 +        for (Integer v1 : new Integer[] { 1, null })
1791 +    {
1792 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1793 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1794 +        final CFException ex = new CFException();
1795 +        final SubtractAction r1 = new SubtractAction(m);
1796 +        final SubtractAction r2 = new SubtractAction(m);
1797 +        final SubtractAction r3 = new SubtractAction(m);
1798 +
1799 +        final CompletableFuture<Integer> fst =  fFirst ? f : g;
1800 +        final CompletableFuture<Integer> snd = !fFirst ? f : g;
1801 +        final Callable<Boolean> complete1 = failFirst ?
1802 +            () -> fst.completeExceptionally(ex) :
1803 +            () -> fst.complete(v1);
1804 +        final Callable<Boolean> complete2 = failFirst ?
1805 +            () -> snd.complete(v1) :
1806 +            () -> snd.completeExceptionally(ex);
1807 +
1808 +        final CompletableFuture<Void> h1 = m.thenAcceptBoth(f, g, r1);
1809 +        assertTrue(complete1.call());
1810 +        final CompletableFuture<Void> h2 = m.thenAcceptBoth(f, g, r2);
1811 +        checkIncomplete(h1);
1812 +        checkIncomplete(h2);
1813 +        assertTrue(complete2.call());
1814 +        final CompletableFuture<Void> h3 = m.thenAcceptBoth(f, g, r3);
1815 +
1816 +        checkCompletedWithWrappedException(h1, ex);
1817 +        checkCompletedWithWrappedException(h2, ex);
1818 +        checkCompletedWithWrappedException(h3, ex);
1819 +        r1.assertNotInvoked();
1820 +        r2.assertNotInvoked();
1821 +        r3.assertNotInvoked();
1822 +        checkCompletedNormally(failFirst ? snd : fst, v1);
1823 +        checkCompletedExceptionally(failFirst ? fst : snd, ex);
1824 +    }}
1825 +
1826 +    /**
1827 +     * thenAcceptBoth result completes exceptionally if either source cancelled
1828 +     */
1829 +    public void testThenAcceptBoth_sourceCancelled() throws Throwable {
1830 +        for (ExecutionMode m : ExecutionMode.values())
1831 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1832 +        for (boolean fFirst : new boolean[] { true, false })
1833 +        for (boolean failFirst : new boolean[] { true, false })
1834 +        for (Integer v1 : new Integer[] { 1, null })
1835 +    {
1836 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1837 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1838 +        final SubtractAction r1 = new SubtractAction(m);
1839 +        final SubtractAction r2 = new SubtractAction(m);
1840 +        final SubtractAction r3 = new SubtractAction(m);
1841 +
1842 +        final CompletableFuture<Integer> fst =  fFirst ? f : g;
1843 +        final CompletableFuture<Integer> snd = !fFirst ? f : g;
1844 +        final Callable<Boolean> complete1 = failFirst ?
1845 +            () -> fst.cancel(mayInterruptIfRunning) :
1846 +            () -> fst.complete(v1);
1847 +        final Callable<Boolean> complete2 = failFirst ?
1848 +            () -> snd.complete(v1) :
1849 +            () -> snd.cancel(mayInterruptIfRunning);
1850 +
1851 +        final CompletableFuture<Void> h1 = m.thenAcceptBoth(f, g, r1);
1852 +        assertTrue(complete1.call());
1853 +        final CompletableFuture<Void> h2 = m.thenAcceptBoth(f, g, r2);
1854 +        checkIncomplete(h1);
1855 +        checkIncomplete(h2);
1856 +        assertTrue(complete2.call());
1857 +        final CompletableFuture<Void> h3 = m.thenAcceptBoth(f, g, r3);
1858 +
1859 +        checkCompletedWithWrappedCancellationException(h1);
1860 +        checkCompletedWithWrappedCancellationException(h2);
1861 +        checkCompletedWithWrappedCancellationException(h3);
1862 +        r1.assertNotInvoked();
1863 +        r2.assertNotInvoked();
1864 +        r3.assertNotInvoked();
1865 +        checkCompletedNormally(failFirst ? snd : fst, v1);
1866 +        checkCancelled(failFirst ? fst : snd);
1867 +    }}
1868 +
1869 +    /**
1870 +     * thenAcceptBoth result completes exceptionally if action does
1871 +     */
1872 +    public void testThenAcceptBoth_actionFailed() {
1873 +        for (ExecutionMode m : ExecutionMode.values())
1874 +        for (boolean fFirst : new boolean[] { true, false })
1875 +        for (Integer v1 : new Integer[] { 1, null })
1876 +        for (Integer v2 : new Integer[] { 2, null })
1877 +    {
1878 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1879 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1880 +        final FailingBiConsumer r1 = new FailingBiConsumer(m);
1881 +        final FailingBiConsumer r2 = new FailingBiConsumer(m);
1882 +        final FailingBiConsumer r3 = new FailingBiConsumer(m);
1883 +
1884 +        final CompletableFuture<Integer> fst =  fFirst ? f : g;
1885 +        final CompletableFuture<Integer> snd = !fFirst ? f : g;
1886 +        final Integer w1 =  fFirst ? v1 : v2;
1887 +        final Integer w2 = !fFirst ? v1 : v2;
1888 +
1889 +        final CompletableFuture<Void> h1 = m.thenAcceptBoth(f, g, r1);
1890 +        assertTrue(fst.complete(w1));
1891 +        final CompletableFuture<Void> h2 = m.thenAcceptBoth(f, g, r2);
1892 +        assertTrue(snd.complete(w2));
1893 +        final CompletableFuture<Void> h3 = m.thenAcceptBoth(f, g, r3);
1894 +
1895 +        checkCompletedWithWrappedCFException(h1);
1896 +        checkCompletedWithWrappedCFException(h2);
1897 +        checkCompletedWithWrappedCFException(h3);
1898 +        r1.assertInvoked();
1899 +        r2.assertInvoked();
1900 +        r3.assertInvoked();
1901 +        checkCompletedNormally(f, v1);
1902 +        checkCompletedNormally(g, v2);
1903 +    }}
1904 +
1905 +    /**
1906 +     * runAfterBoth result completes normally after normal
1907 +     * completion of sources
1908 +     */
1909 +    public void testRunAfterBoth_normalCompletion() {
1910 +        for (ExecutionMode m : ExecutionMode.values())
1911 +        for (boolean fFirst : new boolean[] { true, false })
1912 +        for (Integer v1 : new Integer[] { 1, null })
1913 +        for (Integer v2 : new Integer[] { 2, null })
1914 +    {
1915 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1916 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1917 +        final Noop r1 = new Noop(m);
1918 +        final Noop r2 = new Noop(m);
1919 +        final Noop r3 = new Noop(m);
1920 +
1921 +        final CompletableFuture<Integer> fst =  fFirst ? f : g;
1922 +        final CompletableFuture<Integer> snd = !fFirst ? f : g;
1923 +        final Integer w1 =  fFirst ? v1 : v2;
1924 +        final Integer w2 = !fFirst ? v1 : v2;
1925 +
1926 +        final CompletableFuture<Void> h1 = m.runAfterBoth(f, g, r1);
1927 +        assertTrue(fst.complete(w1));
1928 +        final CompletableFuture<Void> h2 = m.runAfterBoth(f, g, r2);
1929 +        checkIncomplete(h1);
1930 +        checkIncomplete(h2);
1931 +        r1.assertNotInvoked();
1932 +        r2.assertNotInvoked();
1933 +        assertTrue(snd.complete(w2));
1934 +        final CompletableFuture<Void> h3 = m.runAfterBoth(f, g, r3);
1935 +
1936 +        checkCompletedNormally(h1, null);
1937 +        checkCompletedNormally(h2, null);
1938 +        checkCompletedNormally(h3, null);
1939 +        r1.assertInvoked();
1940 +        r2.assertInvoked();
1941 +        r3.assertInvoked();
1942 +        checkCompletedNormally(f, v1);
1943 +        checkCompletedNormally(g, v2);
1944 +    }}
1945 +
1946 +    /**
1947 +     * runAfterBoth result completes exceptionally after exceptional
1948 +     * completion of either source
1949 +     */
1950 +    public void testRunAfterBoth_exceptionalCompletion() throws Throwable {
1951 +        for (ExecutionMode m : ExecutionMode.values())
1952 +        for (boolean fFirst : new boolean[] { true, false })
1953 +        for (boolean failFirst : new boolean[] { true, false })
1954 +        for (Integer v1 : new Integer[] { 1, null })
1955 +    {
1956 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1957 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1958 +        final CFException ex = new CFException();
1959 +        final Noop r1 = new Noop(m);
1960 +        final Noop r2 = new Noop(m);
1961 +        final Noop r3 = new Noop(m);
1962 +
1963 +        final CompletableFuture<Integer> fst =  fFirst ? f : g;
1964 +        final CompletableFuture<Integer> snd = !fFirst ? f : g;
1965 +        final Callable<Boolean> complete1 = failFirst ?
1966 +            () -> fst.completeExceptionally(ex) :
1967 +            () -> fst.complete(v1);
1968 +        final Callable<Boolean> complete2 = failFirst ?
1969 +            () -> snd.complete(v1) :
1970 +            () -> snd.completeExceptionally(ex);
1971 +
1972 +        final CompletableFuture<Void> h1 = m.runAfterBoth(f, g, r1);
1973 +        assertTrue(complete1.call());
1974 +        final CompletableFuture<Void> h2 = m.runAfterBoth(f, g, r2);
1975 +        checkIncomplete(h1);
1976 +        checkIncomplete(h2);
1977 +        assertTrue(complete2.call());
1978 +        final CompletableFuture<Void> h3 = m.runAfterBoth(f, g, r3);
1979 +
1980 +        checkCompletedWithWrappedException(h1, ex);
1981 +        checkCompletedWithWrappedException(h2, ex);
1982 +        checkCompletedWithWrappedException(h3, ex);
1983 +        r1.assertNotInvoked();
1984 +        r2.assertNotInvoked();
1985 +        r3.assertNotInvoked();
1986 +        checkCompletedNormally(failFirst ? snd : fst, v1);
1987 +        checkCompletedExceptionally(failFirst ? fst : snd, ex);
1988 +    }}
1989 +
1990 +    /**
1991 +     * runAfterBoth result completes exceptionally if either source cancelled
1992 +     */
1993 +    public void testRunAfterBoth_sourceCancelled() throws Throwable {
1994 +        for (ExecutionMode m : ExecutionMode.values())
1995 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1996 +        for (boolean fFirst : new boolean[] { true, false })
1997 +        for (boolean failFirst : new boolean[] { true, false })
1998 +        for (Integer v1 : new Integer[] { 1, null })
1999 +    {
2000 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2001 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2002 +        final Noop r1 = new Noop(m);
2003 +        final Noop r2 = new Noop(m);
2004 +        final Noop r3 = new Noop(m);
2005 +
2006 +        final CompletableFuture<Integer> fst =  fFirst ? f : g;
2007 +        final CompletableFuture<Integer> snd = !fFirst ? f : g;
2008 +        final Callable<Boolean> complete1 = failFirst ?
2009 +            () -> fst.cancel(mayInterruptIfRunning) :
2010 +            () -> fst.complete(v1);
2011 +        final Callable<Boolean> complete2 = failFirst ?
2012 +            () -> snd.complete(v1) :
2013 +            () -> snd.cancel(mayInterruptIfRunning);
2014 +
2015 +        final CompletableFuture<Void> h1 = m.runAfterBoth(f, g, r1);
2016 +        assertTrue(complete1.call());
2017 +        final CompletableFuture<Void> h2 = m.runAfterBoth(f, g, r2);
2018 +        checkIncomplete(h1);
2019 +        checkIncomplete(h2);
2020 +        assertTrue(complete2.call());
2021 +        final CompletableFuture<Void> h3 = m.runAfterBoth(f, g, r3);
2022 +
2023 +        checkCompletedWithWrappedCancellationException(h1);
2024 +        checkCompletedWithWrappedCancellationException(h2);
2025 +        checkCompletedWithWrappedCancellationException(h3);
2026 +        r1.assertNotInvoked();
2027 +        r2.assertNotInvoked();
2028 +        r3.assertNotInvoked();
2029 +        checkCompletedNormally(failFirst ? snd : fst, v1);
2030 +        checkCancelled(failFirst ? fst : snd);
2031 +    }}
2032 +
2033 +    /**
2034 +     * runAfterBoth result completes exceptionally if action does
2035 +     */
2036 +    public void testRunAfterBoth_actionFailed() {
2037 +        for (ExecutionMode m : ExecutionMode.values())
2038 +        for (boolean fFirst : new boolean[] { true, false })
2039 +        for (Integer v1 : new Integer[] { 1, null })
2040 +        for (Integer v2 : new Integer[] { 2, null })
2041 +    {
2042 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2043 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2044 +        final FailingRunnable r1 = new FailingRunnable(m);
2045 +        final FailingRunnable r2 = new FailingRunnable(m);
2046 +        final FailingRunnable r3 = new FailingRunnable(m);
2047 +
2048 +        final CompletableFuture<Integer> fst =  fFirst ? f : g;
2049 +        final CompletableFuture<Integer> snd = !fFirst ? f : g;
2050 +        final Integer w1 =  fFirst ? v1 : v2;
2051 +        final Integer w2 = !fFirst ? v1 : v2;
2052 +
2053 +        final CompletableFuture<Void> h1 = m.runAfterBoth(f, g, r1);
2054 +        assertTrue(fst.complete(w1));
2055 +        final CompletableFuture<Void> h2 = m.runAfterBoth(f, g, r2);
2056 +        assertTrue(snd.complete(w2));
2057 +        final CompletableFuture<Void> h3 = m.runAfterBoth(f, g, r3);
2058 +
2059 +        checkCompletedWithWrappedCFException(h1);
2060 +        checkCompletedWithWrappedCFException(h2);
2061 +        checkCompletedWithWrappedCFException(h3);
2062 +        r1.assertInvoked();
2063 +        r2.assertInvoked();
2064 +        r3.assertInvoked();
2065 +        checkCompletedNormally(f, v1);
2066 +        checkCompletedNormally(g, v2);
2067 +    }}
2068 +
2069 +    /**
2070 +     * applyToEither result completes normally after normal completion
2071 +     * of either source
2072 +     */
2073 +    public void testApplyToEither_normalCompletion() {
2074 +        for (ExecutionMode m : ExecutionMode.values())
2075 +        for (Integer v1 : new Integer[] { 1, null })
2076 +        for (Integer v2 : new Integer[] { 2, null })
2077 +    {
2078 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2079 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2080 +        final IncFunction[] rs = new IncFunction[6];
2081 +        for (int i = 0; i < rs.length; i++) rs[i] = new IncFunction(m);
2082 +
2083 +        final CompletableFuture<Integer> h0 = m.applyToEither(f, g, rs[0]);
2084 +        final CompletableFuture<Integer> h1 = m.applyToEither(g, f, rs[1]);
2085 +        checkIncomplete(h0);
2086 +        checkIncomplete(h1);
2087 +        rs[0].assertNotInvoked();
2088 +        rs[1].assertNotInvoked();
2089 +        f.complete(v1);
2090 +        checkCompletedNormally(h0, inc(v1));
2091 +        checkCompletedNormally(h1, inc(v1));
2092 +        final CompletableFuture<Integer> h2 = m.applyToEither(f, g, rs[2]);
2093 +        final CompletableFuture<Integer> h3 = m.applyToEither(g, f, rs[3]);
2094 +        checkCompletedNormally(h2, inc(v1));
2095 +        checkCompletedNormally(h3, inc(v1));
2096 +        g.complete(v2);
2097 +
2098 +        // unspecified behavior - both source completions available
2099 +        final CompletableFuture<Integer> h4 = m.applyToEither(f, g, rs[4]);
2100 +        final CompletableFuture<Integer> h5 = m.applyToEither(g, f, rs[5]);
2101 +        rs[4].assertValue(h4.join());
2102 +        rs[5].assertValue(h5.join());
2103 +        assertTrue(Objects.equals(inc(v1), h4.join()) ||
2104 +                   Objects.equals(inc(v2), h4.join()));
2105 +        assertTrue(Objects.equals(inc(v1), h5.join()) ||
2106 +                   Objects.equals(inc(v2), h5.join()));
2107 +
2108 +        checkCompletedNormally(f, v1);
2109 +        checkCompletedNormally(g, v2);
2110 +        checkCompletedNormally(h0, inc(v1));
2111 +        checkCompletedNormally(h1, inc(v1));
2112 +        checkCompletedNormally(h2, inc(v1));
2113 +        checkCompletedNormally(h3, inc(v1));
2114 +        for (int i = 0; i < 4; i++) rs[i].assertValue(inc(v1));
2115 +    }}
2116 +
2117 +    /**
2118 +     * applyToEither result completes exceptionally after exceptional
2119 +     * completion of either source
2120 +     */
2121 +    public void testApplyToEither_exceptionalCompletion() {
2122 +        for (ExecutionMode m : ExecutionMode.values())
2123 +        for (Integer v1 : new Integer[] { 1, null })
2124 +    {
2125 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2126 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2127 +        final CFException ex = new CFException();
2128 +        final IncFunction[] rs = new IncFunction[6];
2129 +        for (int i = 0; i < rs.length; i++) rs[i] = new IncFunction(m);
2130 +
2131 +        final CompletableFuture<Integer> h0 = m.applyToEither(f, g, rs[0]);
2132 +        final CompletableFuture<Integer> h1 = m.applyToEither(g, f, rs[1]);
2133 +        checkIncomplete(h0);
2134 +        checkIncomplete(h1);
2135 +        rs[0].assertNotInvoked();
2136 +        rs[1].assertNotInvoked();
2137 +        f.completeExceptionally(ex);
2138 +        checkCompletedWithWrappedException(h0, ex);
2139 +        checkCompletedWithWrappedException(h1, ex);
2140 +        final CompletableFuture<Integer> h2 = m.applyToEither(f, g, rs[2]);
2141 +        final CompletableFuture<Integer> h3 = m.applyToEither(g, f, rs[3]);
2142 +        checkCompletedWithWrappedException(h2, ex);
2143 +        checkCompletedWithWrappedException(h3, ex);
2144 +        g.complete(v1);
2145 +
2146 +        // unspecified behavior - both source completions available
2147 +        final CompletableFuture<Integer> h4 = m.applyToEither(f, g, rs[4]);
2148 +        final CompletableFuture<Integer> h5 = m.applyToEither(g, f, rs[5]);
2149 +        try {
2150 +            assertEquals(inc(v1), h4.join());
2151 +            rs[4].assertValue(inc(v1));
2152 +        } catch (CompletionException ok) {
2153 +            checkCompletedWithWrappedException(h4, ex);
2154 +            rs[4].assertNotInvoked();
2155 +        }
2156 +        try {
2157 +            assertEquals(inc(v1), h5.join());
2158 +            rs[5].assertValue(inc(v1));
2159 +        } catch (CompletionException ok) {
2160 +            checkCompletedWithWrappedException(h5, ex);
2161 +            rs[5].assertNotInvoked();
2162 +        }
2163 +
2164 +        checkCompletedExceptionally(f, ex);
2165 +        checkCompletedNormally(g, v1);
2166 +        checkCompletedWithWrappedException(h0, ex);
2167 +        checkCompletedWithWrappedException(h1, ex);
2168 +        checkCompletedWithWrappedException(h2, ex);
2169 +        checkCompletedWithWrappedException(h3, ex);
2170 +        checkCompletedWithWrappedException(h4, ex);
2171 +        for (int i = 0; i < 4; i++) rs[i].assertNotInvoked();
2172 +    }}
2173 +
2174 +    public void testApplyToEither_exceptionalCompletion2() {
2175 +        for (ExecutionMode m : ExecutionMode.values())
2176 +        for (boolean fFirst : new boolean[] { true, false })
2177 +        for (Integer v1 : new Integer[] { 1, null })
2178 +    {
2179 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2180 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2181 +        final CFException ex = new CFException();
2182 +        final IncFunction[] rs = new IncFunction[6];
2183 +        for (int i = 0; i < rs.length; i++) rs[i] = new IncFunction(m);
2184 +
2185 +        final CompletableFuture<Integer> h0 = m.applyToEither(f, g, rs[0]);
2186 +        final CompletableFuture<Integer> h1 = m.applyToEither(g, f, rs[1]);
2187 +        assertTrue(fFirst ? f.complete(v1) : g.completeExceptionally(ex));
2188 +        assertTrue(!fFirst ? f.complete(v1) : g.completeExceptionally(ex));
2189 +        final CompletableFuture<Integer> h2 = m.applyToEither(f, g, rs[2]);
2190 +        final CompletableFuture<Integer> h3 = m.applyToEither(g, f, rs[3]);
2191 +
2192 +        // unspecified behavior - both source completions available
2193 +        try {
2194 +            assertEquals(inc(v1), h0.join());
2195 +            rs[0].assertValue(inc(v1));
2196 +        } catch (CompletionException ok) {
2197 +            checkCompletedWithWrappedException(h0, ex);
2198 +            rs[0].assertNotInvoked();
2199 +        }
2200 +        try {
2201 +            assertEquals(inc(v1), h1.join());
2202 +            rs[1].assertValue(inc(v1));
2203 +        } catch (CompletionException ok) {
2204 +            checkCompletedWithWrappedException(h1, ex);
2205 +            rs[1].assertNotInvoked();
2206 +        }
2207 +        try {
2208 +            assertEquals(inc(v1), h2.join());
2209 +            rs[2].assertValue(inc(v1));
2210 +        } catch (CompletionException ok) {
2211 +            checkCompletedWithWrappedException(h2, ex);
2212 +            rs[2].assertNotInvoked();
2213 +        }
2214 +        try {
2215 +            assertEquals(inc(v1), h3.join());
2216 +            rs[3].assertValue(inc(v1));
2217 +        } catch (CompletionException ok) {
2218 +            checkCompletedWithWrappedException(h3, ex);
2219 +            rs[3].assertNotInvoked();
2220 +        }
2221 +
2222 +        checkCompletedNormally(f, v1);
2223 +        checkCompletedExceptionally(g, ex);
2224 +    }}
2225 +
2226 +    /**
2227 +     * applyToEither result completes exceptionally if either source cancelled
2228 +     */
2229 +    public void testApplyToEither_sourceCancelled() {
2230 +        for (ExecutionMode m : ExecutionMode.values())
2231 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2232 +        for (Integer v1 : new Integer[] { 1, null })
2233 +    {
2234 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2235 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2236 +        final IncFunction[] rs = new IncFunction[6];
2237 +        for (int i = 0; i < rs.length; i++) rs[i] = new IncFunction(m);
2238 +
2239 +        final CompletableFuture<Integer> h0 = m.applyToEither(f, g, rs[0]);
2240 +        final CompletableFuture<Integer> h1 = m.applyToEither(g, f, rs[1]);
2241 +        checkIncomplete(h0);
2242 +        checkIncomplete(h1);
2243 +        rs[0].assertNotInvoked();
2244 +        rs[1].assertNotInvoked();
2245 +        f.cancel(mayInterruptIfRunning);
2246 +        checkCompletedWithWrappedCancellationException(h0);
2247 +        checkCompletedWithWrappedCancellationException(h1);
2248 +        final CompletableFuture<Integer> h2 = m.applyToEither(f, g, rs[2]);
2249 +        final CompletableFuture<Integer> h3 = m.applyToEither(g, f, rs[3]);
2250 +        checkCompletedWithWrappedCancellationException(h2);
2251 +        checkCompletedWithWrappedCancellationException(h3);
2252 +        g.complete(v1);
2253 +
2254 +        // unspecified behavior - both source completions available
2255 +        final CompletableFuture<Integer> h4 = m.applyToEither(f, g, rs[4]);
2256 +        final CompletableFuture<Integer> h5 = m.applyToEither(g, f, rs[5]);
2257 +        try {
2258 +            assertEquals(inc(v1), h4.join());
2259 +            rs[4].assertValue(inc(v1));
2260 +        } catch (CompletionException ok) {
2261 +            checkCompletedWithWrappedCancellationException(h4);
2262 +            rs[4].assertNotInvoked();
2263 +        }
2264 +        try {
2265 +            assertEquals(inc(v1), h5.join());
2266 +            rs[5].assertValue(inc(v1));
2267 +        } catch (CompletionException ok) {
2268 +            checkCompletedWithWrappedCancellationException(h5);
2269 +            rs[5].assertNotInvoked();
2270 +        }
2271 +
2272 +        checkCancelled(f);
2273 +        checkCompletedNormally(g, v1);
2274 +        checkCompletedWithWrappedCancellationException(h0);
2275 +        checkCompletedWithWrappedCancellationException(h1);
2276 +        checkCompletedWithWrappedCancellationException(h2);
2277 +        checkCompletedWithWrappedCancellationException(h3);
2278 +        for (int i = 0; i < 4; i++) rs[i].assertNotInvoked();
2279 +    }}
2280 +
2281 +    public void testApplyToEither_sourceCancelled2() {
2282 +        for (ExecutionMode m : ExecutionMode.values())
2283 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2284 +        for (boolean fFirst : new boolean[] { true, false })
2285 +        for (Integer v1 : new Integer[] { 1, null })
2286 +    {
2287 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2288 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2289 +        final IncFunction[] rs = new IncFunction[6];
2290 +        for (int i = 0; i < rs.length; i++) rs[i] = new IncFunction(m);
2291 +
2292 +        final CompletableFuture<Integer> h0 = m.applyToEither(f, g, rs[0]);
2293 +        final CompletableFuture<Integer> h1 = m.applyToEither(g, f, rs[1]);
2294 +        assertTrue(fFirst ? f.complete(v1) : g.cancel(mayInterruptIfRunning));
2295 +        assertTrue(!fFirst ? f.complete(v1) : g.cancel(mayInterruptIfRunning));
2296 +        final CompletableFuture<Integer> h2 = m.applyToEither(f, g, rs[2]);
2297 +        final CompletableFuture<Integer> h3 = m.applyToEither(g, f, rs[3]);
2298 +
2299 +        // unspecified behavior - both source completions available
2300 +        try {
2301 +            assertEquals(inc(v1), h0.join());
2302 +            rs[0].assertValue(inc(v1));
2303 +        } catch (CompletionException ok) {
2304 +            checkCompletedWithWrappedCancellationException(h0);
2305 +            rs[0].assertNotInvoked();
2306 +        }
2307 +        try {
2308 +            assertEquals(inc(v1), h1.join());
2309 +            rs[1].assertValue(inc(v1));
2310 +        } catch (CompletionException ok) {
2311 +            checkCompletedWithWrappedCancellationException(h1);
2312 +            rs[1].assertNotInvoked();
2313 +        }
2314 +        try {
2315 +            assertEquals(inc(v1), h2.join());
2316 +            rs[2].assertValue(inc(v1));
2317 +        } catch (CompletionException ok) {
2318 +            checkCompletedWithWrappedCancellationException(h2);
2319 +            rs[2].assertNotInvoked();
2320 +        }
2321 +        try {
2322 +            assertEquals(inc(v1), h3.join());
2323 +            rs[3].assertValue(inc(v1));
2324 +        } catch (CompletionException ok) {
2325 +            checkCompletedWithWrappedCancellationException(h3);
2326 +            rs[3].assertNotInvoked();
2327 +        }
2328 +
2329 +        checkCompletedNormally(f, v1);
2330 +        checkCancelled(g);
2331 +    }}
2332 +
2333 +    /**
2334 +     * applyToEither result completes exceptionally if action does
2335 +     */
2336 +    public void testApplyToEither_actionFailed() {
2337 +        for (ExecutionMode m : ExecutionMode.values())
2338 +        for (Integer v1 : new Integer[] { 1, null })
2339 +        for (Integer v2 : new Integer[] { 2, null })
2340 +    {
2341 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2342 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2343 +        final FailingFunction[] rs = new FailingFunction[6];
2344 +        for (int i = 0; i < rs.length; i++) rs[i] = new FailingFunction(m);
2345 +
2346 +        final CompletableFuture<Integer> h0 = m.applyToEither(f, g, rs[0]);
2347 +        final CompletableFuture<Integer> h1 = m.applyToEither(g, f, rs[1]);
2348 +        f.complete(v1);
2349 +        final CompletableFuture<Integer> h2 = m.applyToEither(f, g, rs[2]);
2350 +        final CompletableFuture<Integer> h3 = m.applyToEither(g, f, rs[3]);
2351 +        checkCompletedWithWrappedCFException(h0);
2352 +        checkCompletedWithWrappedCFException(h1);
2353 +        checkCompletedWithWrappedCFException(h2);
2354 +        checkCompletedWithWrappedCFException(h3);
2355 +        for (int i = 0; i < 4; i++) rs[i].assertValue(v1);
2356 +
2357 +        g.complete(v2);
2358 +
2359 +        // unspecified behavior - both source completions available
2360 +        final CompletableFuture<Integer> h4 = m.applyToEither(f, g, rs[4]);
2361 +        final CompletableFuture<Integer> h5 = m.applyToEither(g, f, rs[5]);
2362 +
2363 +        checkCompletedWithWrappedCFException(h4);
2364 +        assertTrue(Objects.equals(v1, rs[4].value) ||
2365 +                   Objects.equals(v2, rs[4].value));
2366 +        checkCompletedWithWrappedCFException(h5);
2367 +        assertTrue(Objects.equals(v1, rs[5].value) ||
2368 +                   Objects.equals(v2, rs[5].value));
2369 +
2370 +        checkCompletedNormally(f, v1);
2371 +        checkCompletedNormally(g, v2);
2372 +    }}
2373 +
2374 +    /**
2375 +     * acceptEither result completes normally after normal completion
2376 +     * of either source
2377 +     */
2378 +    public void testAcceptEither_normalCompletion() {
2379 +        for (ExecutionMode m : ExecutionMode.values())
2380 +        for (Integer v1 : new Integer[] { 1, null })
2381 +        for (Integer v2 : new Integer[] { 2, null })
2382 +    {
2383 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2384 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2385 +        final NoopConsumer[] rs = new NoopConsumer[6];
2386 +        for (int i = 0; i < rs.length; i++) rs[i] = new NoopConsumer(m);
2387 +
2388 +        final CompletableFuture<Void> h0 = m.acceptEither(f, g, rs[0]);
2389 +        final CompletableFuture<Void> h1 = m.acceptEither(g, f, rs[1]);
2390 +        checkIncomplete(h0);
2391 +        checkIncomplete(h1);
2392 +        rs[0].assertNotInvoked();
2393 +        rs[1].assertNotInvoked();
2394 +        f.complete(v1);
2395 +        checkCompletedNormally(h0, null);
2396 +        checkCompletedNormally(h1, null);
2397 +        rs[0].assertValue(v1);
2398 +        rs[1].assertValue(v1);
2399 +        final CompletableFuture<Void> h2 = m.acceptEither(f, g, rs[2]);
2400 +        final CompletableFuture<Void> h3 = m.acceptEither(g, f, rs[3]);
2401 +        checkCompletedNormally(h2, null);
2402 +        checkCompletedNormally(h3, null);
2403 +        rs[2].assertValue(v1);
2404 +        rs[3].assertValue(v1);
2405 +        g.complete(v2);
2406 +
2407 +        // unspecified behavior - both source completions available
2408 +        final CompletableFuture<Void> h4 = m.acceptEither(f, g, rs[4]);
2409 +        final CompletableFuture<Void> h5 = m.acceptEither(g, f, rs[5]);
2410 +        checkCompletedNormally(h4, null);
2411 +        checkCompletedNormally(h5, null);
2412 +        assertTrue(Objects.equals(v1, rs[4].value) ||
2413 +                   Objects.equals(v2, rs[4].value));
2414 +        assertTrue(Objects.equals(v1, rs[5].value) ||
2415 +                   Objects.equals(v2, rs[5].value));
2416 +
2417 +        checkCompletedNormally(f, v1);
2418 +        checkCompletedNormally(g, v2);
2419 +        checkCompletedNormally(h0, null);
2420 +        checkCompletedNormally(h1, null);
2421 +        checkCompletedNormally(h2, null);
2422 +        checkCompletedNormally(h3, null);
2423 +        for (int i = 0; i < 4; i++) rs[i].assertValue(v1);
2424 +    }}
2425 +
2426 +    /**
2427 +     * acceptEither result completes exceptionally after exceptional
2428 +     * completion of either source
2429 +     */
2430 +    public void testAcceptEither_exceptionalCompletion() {
2431 +        for (ExecutionMode m : ExecutionMode.values())
2432 +        for (Integer v1 : new Integer[] { 1, null })
2433 +    {
2434 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2435 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2436 +        final CFException ex = new CFException();
2437 +        final NoopConsumer[] rs = new NoopConsumer[6];
2438 +        for (int i = 0; i < rs.length; i++) rs[i] = new NoopConsumer(m);
2439 +
2440 +        final CompletableFuture<Void> h0 = m.acceptEither(f, g, rs[0]);
2441 +        final CompletableFuture<Void> h1 = m.acceptEither(g, f, rs[1]);
2442 +        checkIncomplete(h0);
2443 +        checkIncomplete(h1);
2444 +        rs[0].assertNotInvoked();
2445 +        rs[1].assertNotInvoked();
2446 +        f.completeExceptionally(ex);
2447 +        checkCompletedWithWrappedException(h0, ex);
2448 +        checkCompletedWithWrappedException(h1, ex);
2449 +        final CompletableFuture<Void> h2 = m.acceptEither(f, g, rs[2]);
2450 +        final CompletableFuture<Void> h3 = m.acceptEither(g, f, rs[3]);
2451 +        checkCompletedWithWrappedException(h2, ex);
2452 +        checkCompletedWithWrappedException(h3, ex);
2453 +
2454 +        g.complete(v1);
2455 +
2456 +        // unspecified behavior - both source completions available
2457 +        final CompletableFuture<Void> h4 = m.acceptEither(f, g, rs[4]);
2458 +        final CompletableFuture<Void> h5 = m.acceptEither(g, f, rs[5]);
2459 +        try {
2460 +            assertNull(h4.join());
2461 +            rs[4].assertValue(v1);
2462 +        } catch (CompletionException ok) {
2463 +            checkCompletedWithWrappedException(h4, ex);
2464 +            rs[4].assertNotInvoked();
2465 +        }
2466 +        try {
2467 +            assertNull(h5.join());
2468 +            rs[5].assertValue(v1);
2469 +        } catch (CompletionException ok) {
2470 +            checkCompletedWithWrappedException(h5, ex);
2471 +            rs[5].assertNotInvoked();
2472 +        }
2473 +
2474 +        checkCompletedExceptionally(f, ex);
2475 +        checkCompletedNormally(g, v1);
2476 +        checkCompletedWithWrappedException(h0, ex);
2477 +        checkCompletedWithWrappedException(h1, ex);
2478 +        checkCompletedWithWrappedException(h2, ex);
2479 +        checkCompletedWithWrappedException(h3, ex);
2480 +        checkCompletedWithWrappedException(h4, ex);
2481 +        for (int i = 0; i < 4; i++) rs[i].assertNotInvoked();
2482 +    }}
2483 +
2484 +    public void testAcceptEither_exceptionalCompletion2() {
2485 +        for (ExecutionMode m : ExecutionMode.values())
2486 +        for (boolean fFirst : new boolean[] { true, false })
2487 +        for (Integer v1 : new Integer[] { 1, null })
2488 +    {
2489 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2490 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2491 +        final CFException ex = new CFException();
2492 +        final NoopConsumer[] rs = new NoopConsumer[6];
2493 +        for (int i = 0; i < rs.length; i++) rs[i] = new NoopConsumer(m);
2494 +
2495 +        final CompletableFuture<Void> h0 = m.acceptEither(f, g, rs[0]);
2496 +        final CompletableFuture<Void> h1 = m.acceptEither(g, f, rs[1]);
2497 +        assertTrue(fFirst ? f.complete(v1) : g.completeExceptionally(ex));
2498 +        assertTrue(!fFirst ? f.complete(v1) : g.completeExceptionally(ex));
2499 +        final CompletableFuture<Void> h2 = m.acceptEither(f, g, rs[2]);
2500 +        final CompletableFuture<Void> h3 = m.acceptEither(g, f, rs[3]);
2501 +
2502 +        // unspecified behavior - both source completions available
2503 +        try {
2504 +            assertEquals(null, h0.join());
2505 +            rs[0].assertValue(v1);
2506 +        } catch (CompletionException ok) {
2507 +            checkCompletedWithWrappedException(h0, ex);
2508 +            rs[0].assertNotInvoked();
2509 +        }
2510 +        try {
2511 +            assertEquals(null, h1.join());
2512 +            rs[1].assertValue(v1);
2513 +        } catch (CompletionException ok) {
2514 +            checkCompletedWithWrappedException(h1, ex);
2515 +            rs[1].assertNotInvoked();
2516 +        }
2517 +        try {
2518 +            assertEquals(null, h2.join());
2519 +            rs[2].assertValue(v1);
2520 +        } catch (CompletionException ok) {
2521 +            checkCompletedWithWrappedException(h2, ex);
2522 +            rs[2].assertNotInvoked();
2523 +        }
2524 +        try {
2525 +            assertEquals(null, h3.join());
2526 +            rs[3].assertValue(v1);
2527 +        } catch (CompletionException ok) {
2528 +            checkCompletedWithWrappedException(h3, ex);
2529 +            rs[3].assertNotInvoked();
2530 +        }
2531 +
2532 +        checkCompletedNormally(f, v1);
2533 +        checkCompletedExceptionally(g, ex);
2534 +    }}
2535 +
2536 +    /**
2537 +     * acceptEither result completes exceptionally if either source cancelled
2538 +     */
2539 +    public void testAcceptEither_sourceCancelled() {
2540 +        for (ExecutionMode m : ExecutionMode.values())
2541 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2542 +        for (Integer v1 : new Integer[] { 1, null })
2543 +    {
2544 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2545 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2546 +        final NoopConsumer[] rs = new NoopConsumer[6];
2547 +        for (int i = 0; i < rs.length; i++) rs[i] = new NoopConsumer(m);
2548 +
2549 +        final CompletableFuture<Void> h0 = m.acceptEither(f, g, rs[0]);
2550 +        final CompletableFuture<Void> h1 = m.acceptEither(g, f, rs[1]);
2551 +        checkIncomplete(h0);
2552 +        checkIncomplete(h1);
2553 +        rs[0].assertNotInvoked();
2554 +        rs[1].assertNotInvoked();
2555 +        f.cancel(mayInterruptIfRunning);
2556 +        checkCompletedWithWrappedCancellationException(h0);
2557 +        checkCompletedWithWrappedCancellationException(h1);
2558 +        final CompletableFuture<Void> h2 = m.acceptEither(f, g, rs[2]);
2559 +        final CompletableFuture<Void> h3 = m.acceptEither(g, f, rs[3]);
2560 +        checkCompletedWithWrappedCancellationException(h2);
2561 +        checkCompletedWithWrappedCancellationException(h3);
2562 +
2563 +        g.complete(v1);
2564 +
2565 +        // unspecified behavior - both source completions available
2566 +        final CompletableFuture<Void> h4 = m.acceptEither(f, g, rs[4]);
2567 +        final CompletableFuture<Void> h5 = m.acceptEither(g, f, rs[5]);
2568 +        try {
2569 +            assertNull(h4.join());
2570 +            rs[4].assertValue(v1);
2571 +        } catch (CompletionException ok) {
2572 +            checkCompletedWithWrappedCancellationException(h4);
2573 +            rs[4].assertNotInvoked();
2574 +        }
2575 +        try {
2576 +            assertNull(h5.join());
2577 +            rs[5].assertValue(v1);
2578 +        } catch (CompletionException ok) {
2579 +            checkCompletedWithWrappedCancellationException(h5);
2580 +            rs[5].assertNotInvoked();
2581 +        }
2582 +
2583 +        checkCancelled(f);
2584 +        checkCompletedNormally(g, v1);
2585 +        checkCompletedWithWrappedCancellationException(h0);
2586 +        checkCompletedWithWrappedCancellationException(h1);
2587 +        checkCompletedWithWrappedCancellationException(h2);
2588 +        checkCompletedWithWrappedCancellationException(h3);
2589 +        for (int i = 0; i < 4; i++) rs[i].assertNotInvoked();
2590 +    }}
2591 +
2592 +    /**
2593 +     * acceptEither result completes exceptionally if action does
2594 +     */
2595 +    public void testAcceptEither_actionFailed() {
2596 +        for (ExecutionMode m : ExecutionMode.values())
2597 +        for (Integer v1 : new Integer[] { 1, null })
2598 +        for (Integer v2 : new Integer[] { 2, null })
2599 +    {
2600 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2601 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2602 +        final FailingConsumer[] rs = new FailingConsumer[6];
2603 +        for (int i = 0; i < rs.length; i++) rs[i] = new FailingConsumer(m);
2604 +
2605 +        final CompletableFuture<Void> h0 = m.acceptEither(f, g, rs[0]);
2606 +        final CompletableFuture<Void> h1 = m.acceptEither(g, f, rs[1]);
2607 +        f.complete(v1);
2608 +        final CompletableFuture<Void> h2 = m.acceptEither(f, g, rs[2]);
2609 +        final CompletableFuture<Void> h3 = m.acceptEither(g, f, rs[3]);
2610 +        checkCompletedWithWrappedCFException(h0);
2611 +        checkCompletedWithWrappedCFException(h1);
2612 +        checkCompletedWithWrappedCFException(h2);
2613 +        checkCompletedWithWrappedCFException(h3);
2614 +        for (int i = 0; i < 4; i++) rs[i].assertValue(v1);
2615 +
2616 +        g.complete(v2);
2617 +
2618 +        // unspecified behavior - both source completions available
2619 +        final CompletableFuture<Void> h4 = m.acceptEither(f, g, rs[4]);
2620 +        final CompletableFuture<Void> h5 = m.acceptEither(g, f, rs[5]);
2621 +
2622 +        checkCompletedWithWrappedCFException(h4);
2623 +        assertTrue(Objects.equals(v1, rs[4].value) ||
2624 +                   Objects.equals(v2, rs[4].value));
2625 +        checkCompletedWithWrappedCFException(h5);
2626 +        assertTrue(Objects.equals(v1, rs[5].value) ||
2627 +                   Objects.equals(v2, rs[5].value));
2628 +
2629 +        checkCompletedNormally(f, v1);
2630 +        checkCompletedNormally(g, v2);
2631 +    }}
2632 +
2633 +    /**
2634 +     * runAfterEither result completes normally after normal completion
2635 +     * of either source
2636 +     */
2637 +    public void testRunAfterEither_normalCompletion() {
2638 +        for (ExecutionMode m : ExecutionMode.values())
2639 +        for (Integer v1 : new Integer[] { 1, null })
2640 +        for (Integer v2 : new Integer[] { 2, null })
2641 +    {
2642 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2643 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2644 +        final Noop[] rs = new Noop[6];
2645 +        for (int i = 0; i < rs.length; i++) rs[i] = new Noop(m);
2646 +
2647 +        final CompletableFuture<Void> h0 = m.runAfterEither(f, g, rs[0]);
2648 +        final CompletableFuture<Void> h1 = m.runAfterEither(g, f, rs[1]);
2649 +        checkIncomplete(h0);
2650 +        checkIncomplete(h1);
2651 +        rs[0].assertNotInvoked();
2652 +        rs[1].assertNotInvoked();
2653 +        f.complete(v1);
2654 +        checkCompletedNormally(h0, null);
2655 +        checkCompletedNormally(h1, null);
2656 +        rs[0].assertInvoked();
2657 +        rs[1].assertInvoked();
2658 +        final CompletableFuture<Void> h2 = m.runAfterEither(f, g, rs[2]);
2659 +        final CompletableFuture<Void> h3 = m.runAfterEither(g, f, rs[3]);
2660 +        checkCompletedNormally(h2, null);
2661 +        checkCompletedNormally(h3, null);
2662 +        rs[2].assertInvoked();
2663 +        rs[3].assertInvoked();
2664 +
2665 +        g.complete(v2);
2666 +
2667 +        final CompletableFuture<Void> h4 = m.runAfterEither(f, g, rs[4]);
2668 +        final CompletableFuture<Void> h5 = m.runAfterEither(g, f, rs[5]);
2669 +
2670 +        checkCompletedNormally(f, v1);
2671 +        checkCompletedNormally(g, v2);
2672 +        checkCompletedNormally(h0, null);
2673 +        checkCompletedNormally(h1, null);
2674 +        checkCompletedNormally(h2, null);
2675 +        checkCompletedNormally(h3, null);
2676 +        checkCompletedNormally(h4, null);
2677 +        checkCompletedNormally(h5, null);
2678 +        for (int i = 0; i < 6; i++) rs[i].assertInvoked();
2679 +    }}
2680 +
2681 +    /**
2682 +     * runAfterEither result completes exceptionally after exceptional
2683 +     * completion of either source
2684 +     */
2685 +    public void testRunAfterEither_exceptionalCompletion() {
2686 +        for (ExecutionMode m : ExecutionMode.values())
2687 +        for (Integer v1 : new Integer[] { 1, null })
2688 +    {
2689 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2690 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2691 +        final CFException ex = new CFException();
2692 +        final Noop[] rs = new Noop[6];
2693 +        for (int i = 0; i < rs.length; i++) rs[i] = new Noop(m);
2694 +
2695 +        final CompletableFuture<Void> h0 = m.runAfterEither(f, g, rs[0]);
2696 +        final CompletableFuture<Void> h1 = m.runAfterEither(g, f, rs[1]);
2697 +        checkIncomplete(h0);
2698 +        checkIncomplete(h1);
2699 +        rs[0].assertNotInvoked();
2700 +        rs[1].assertNotInvoked();
2701 +        assertTrue(f.completeExceptionally(ex));
2702 +        checkCompletedWithWrappedException(h0, ex);
2703 +        checkCompletedWithWrappedException(h1, ex);
2704 +        final CompletableFuture<Void> h2 = m.runAfterEither(f, g, rs[2]);
2705 +        final CompletableFuture<Void> h3 = m.runAfterEither(g, f, rs[3]);
2706 +        checkCompletedWithWrappedException(h2, ex);
2707 +        checkCompletedWithWrappedException(h3, ex);
2708 +
2709 +        assertTrue(g.complete(v1));
2710 +
2711 +        // unspecified behavior - both source completions available
2712 +        final CompletableFuture<Void> h4 = m.runAfterEither(f, g, rs[4]);
2713 +        final CompletableFuture<Void> h5 = m.runAfterEither(g, f, rs[5]);
2714 +        try {
2715 +            assertNull(h4.join());
2716 +            rs[4].assertInvoked();
2717 +        } catch (CompletionException ok) {
2718 +            checkCompletedWithWrappedException(h4, ex);
2719 +            rs[4].assertNotInvoked();
2720 +        }
2721 +        try {
2722 +            assertNull(h5.join());
2723 +            rs[5].assertInvoked();
2724 +        } catch (CompletionException ok) {
2725 +            checkCompletedWithWrappedException(h5, ex);
2726 +            rs[5].assertNotInvoked();
2727 +        }
2728 +
2729 +        checkCompletedExceptionally(f, ex);
2730 +        checkCompletedNormally(g, v1);
2731 +        checkCompletedWithWrappedException(h0, ex);
2732 +        checkCompletedWithWrappedException(h1, ex);
2733 +        checkCompletedWithWrappedException(h2, ex);
2734 +        checkCompletedWithWrappedException(h3, ex);
2735 +        checkCompletedWithWrappedException(h4, ex);
2736 +        for (int i = 0; i < 4; i++) rs[i].assertNotInvoked();
2737 +    }}
2738 +
2739 +    public void testRunAfterEither_exceptionalCompletion2() {
2740 +        for (ExecutionMode m : ExecutionMode.values())
2741 +        for (boolean fFirst : new boolean[] { true, false })
2742 +        for (Integer v1 : new Integer[] { 1, null })
2743 +    {
2744 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2745 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2746 +        final CFException ex = new CFException();
2747 +        final Noop[] rs = new Noop[6];
2748 +        for (int i = 0; i < rs.length; i++) rs[i] = new Noop(m);
2749 +
2750 +        final CompletableFuture<Void> h0 = m.runAfterEither(f, g, rs[0]);
2751 +        final CompletableFuture<Void> h1 = m.runAfterEither(g, f, rs[1]);
2752 +        assertTrue( fFirst ? f.complete(v1) : g.completeExceptionally(ex));
2753 +        assertTrue(!fFirst ? f.complete(v1) : g.completeExceptionally(ex));
2754 +        final CompletableFuture<Void> h2 = m.runAfterEither(f, g, rs[2]);
2755 +        final CompletableFuture<Void> h3 = m.runAfterEither(g, f, rs[3]);
2756 +
2757 +        // unspecified behavior - both source completions available
2758 +        try {
2759 +            assertEquals(null, h0.join());
2760 +            rs[0].assertInvoked();
2761 +        } catch (CompletionException ok) {
2762 +            checkCompletedWithWrappedException(h0, ex);
2763 +            rs[0].assertNotInvoked();
2764 +        }
2765 +        try {
2766 +            assertEquals(null, h1.join());
2767 +            rs[1].assertInvoked();
2768 +        } catch (CompletionException ok) {
2769 +            checkCompletedWithWrappedException(h1, ex);
2770 +            rs[1].assertNotInvoked();
2771 +        }
2772 +        try {
2773 +            assertEquals(null, h2.join());
2774 +            rs[2].assertInvoked();
2775 +        } catch (CompletionException ok) {
2776 +            checkCompletedWithWrappedException(h2, ex);
2777 +            rs[2].assertNotInvoked();
2778 +        }
2779 +        try {
2780 +            assertEquals(null, h3.join());
2781 +            rs[3].assertInvoked();
2782 +        } catch (CompletionException ok) {
2783 +            checkCompletedWithWrappedException(h3, ex);
2784 +            rs[3].assertNotInvoked();
2785 +        }
2786 +
2787 +        checkCompletedNormally(f, v1);
2788 +        checkCompletedExceptionally(g, ex);
2789 +    }}
2790 +
2791 +    /**
2792 +     * runAfterEither result completes exceptionally if either source cancelled
2793 +     */
2794 +    public void testRunAfterEither_sourceCancelled() {
2795 +        for (ExecutionMode m : ExecutionMode.values())
2796 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2797 +        for (Integer v1 : new Integer[] { 1, null })
2798 +    {
2799 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2800 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2801 +        final Noop[] rs = new Noop[6];
2802 +        for (int i = 0; i < rs.length; i++) rs[i] = new Noop(m);
2803 +
2804 +        final CompletableFuture<Void> h0 = m.runAfterEither(f, g, rs[0]);
2805 +        final CompletableFuture<Void> h1 = m.runAfterEither(g, f, rs[1]);
2806 +        checkIncomplete(h0);
2807 +        checkIncomplete(h1);
2808 +        rs[0].assertNotInvoked();
2809 +        rs[1].assertNotInvoked();
2810 +        f.cancel(mayInterruptIfRunning);
2811 +        checkCompletedWithWrappedCancellationException(h0);
2812 +        checkCompletedWithWrappedCancellationException(h1);
2813 +        final CompletableFuture<Void> h2 = m.runAfterEither(f, g, rs[2]);
2814 +        final CompletableFuture<Void> h3 = m.runAfterEither(g, f, rs[3]);
2815 +        checkCompletedWithWrappedCancellationException(h2);
2816 +        checkCompletedWithWrappedCancellationException(h3);
2817 +
2818 +        assertTrue(g.complete(v1));
2819 +
2820 +        // unspecified behavior - both source completions available
2821 +        final CompletableFuture<Void> h4 = m.runAfterEither(f, g, rs[4]);
2822 +        final CompletableFuture<Void> h5 = m.runAfterEither(g, f, rs[5]);
2823 +        try {
2824 +            assertNull(h4.join());
2825 +            rs[4].assertInvoked();
2826 +        } catch (CompletionException ok) {
2827 +            checkCompletedWithWrappedCancellationException(h4);
2828 +            rs[4].assertNotInvoked();
2829 +        }
2830 +        try {
2831 +            assertNull(h5.join());
2832 +            rs[5].assertInvoked();
2833 +        } catch (CompletionException ok) {
2834 +            checkCompletedWithWrappedCancellationException(h5);
2835 +            rs[5].assertNotInvoked();
2836 +        }
2837 +
2838 +        checkCancelled(f);
2839 +        checkCompletedNormally(g, v1);
2840 +        checkCompletedWithWrappedCancellationException(h0);
2841 +        checkCompletedWithWrappedCancellationException(h1);
2842 +        checkCompletedWithWrappedCancellationException(h2);
2843 +        checkCompletedWithWrappedCancellationException(h3);
2844 +        for (int i = 0; i < 4; i++) rs[i].assertNotInvoked();
2845 +    }}
2846 +
2847 +    /**
2848 +     * runAfterEither result completes exceptionally if action does
2849 +     */
2850 +    public void testRunAfterEither_actionFailed() {
2851 +        for (ExecutionMode m : ExecutionMode.values())
2852 +        for (Integer v1 : new Integer[] { 1, null })
2853 +        for (Integer v2 : new Integer[] { 2, null })
2854 +    {
2855 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2856 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2857 +        final FailingRunnable[] rs = new FailingRunnable[6];
2858 +        for (int i = 0; i < rs.length; i++) rs[i] = new FailingRunnable(m);
2859 +
2860 +        final CompletableFuture<Void> h0 = m.runAfterEither(f, g, rs[0]);
2861 +        final CompletableFuture<Void> h1 = m.runAfterEither(g, f, rs[1]);
2862 +        assertTrue(f.complete(v1));
2863 +        final CompletableFuture<Void> h2 = m.runAfterEither(f, g, rs[2]);
2864 +        final CompletableFuture<Void> h3 = m.runAfterEither(g, f, rs[3]);
2865 +        checkCompletedWithWrappedCFException(h0);
2866 +        checkCompletedWithWrappedCFException(h1);
2867 +        checkCompletedWithWrappedCFException(h2);
2868 +        checkCompletedWithWrappedCFException(h3);
2869 +        for (int i = 0; i < 4; i++) rs[i].assertInvoked();
2870 +        assertTrue(g.complete(v2));
2871 +        final CompletableFuture<Void> h4 = m.runAfterEither(f, g, rs[4]);
2872 +        final CompletableFuture<Void> h5 = m.runAfterEither(g, f, rs[5]);
2873 +        checkCompletedWithWrappedCFException(h4);
2874 +        checkCompletedWithWrappedCFException(h5);
2875 +
2876 +        checkCompletedNormally(f, v1);
2877 +        checkCompletedNormally(g, v2);
2878 +        for (int i = 0; i < 6; i++) rs[i].assertInvoked();
2879 +    }}
2880 +
2881 +    /**
2882 +     * thenCompose result completes normally after normal completion of source
2883 +     */
2884 +    public void testThenCompose_normalCompletion() {
2885 +        for (ExecutionMode m : ExecutionMode.values())
2886 +        for (boolean createIncomplete : new boolean[] { true, false })
2887 +        for (Integer v1 : new Integer[] { 1, null })
2888 +    {
2889 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2890 +        final CompletableFutureInc r = new CompletableFutureInc(m);
2891 +        if (!createIncomplete) assertTrue(f.complete(v1));
2892 +        final CompletableFuture<Integer> g = m.thenCompose(f, r);
2893 +        if (createIncomplete) assertTrue(f.complete(v1));
2894 +
2895 +        checkCompletedNormally(g, inc(v1));
2896 +        checkCompletedNormally(f, v1);
2897 +        r.assertValue(v1);
2898 +    }}
2899 +
2900 +    /**
2901 +     * thenCompose result completes exceptionally after exceptional
2902 +     * completion of source
2903 +     */
2904 +    public void testThenCompose_exceptionalCompletion() {
2905 +        for (ExecutionMode m : ExecutionMode.values())
2906 +        for (boolean createIncomplete : new boolean[] { true, false })
2907 +    {
2908 +        final CFException ex = new CFException();
2909 +        final CompletableFutureInc r = new CompletableFutureInc(m);
2910 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2911 +        if (!createIncomplete) f.completeExceptionally(ex);
2912 +        final CompletableFuture<Integer> g = m.thenCompose(f, r);
2913 +        if (createIncomplete) f.completeExceptionally(ex);
2914 +
2915 +        checkCompletedWithWrappedException(g, ex);
2916 +        checkCompletedExceptionally(f, ex);
2917 +        r.assertNotInvoked();
2918 +    }}
2919 +
2920 +    /**
2921 +     * thenCompose result completes exceptionally if action does
2922 +     */
2923 +    public void testThenCompose_actionFailed() {
2924 +        for (ExecutionMode m : ExecutionMode.values())
2925 +        for (boolean createIncomplete : new boolean[] { true, false })
2926 +        for (Integer v1 : new Integer[] { 1, null })
2927 +    {
2928 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2929 +        final FailingCompletableFutureFunction r
2930 +            = new FailingCompletableFutureFunction(m);
2931 +        if (!createIncomplete) assertTrue(f.complete(v1));
2932 +        final CompletableFuture<Integer> g = m.thenCompose(f, r);
2933 +        if (createIncomplete) assertTrue(f.complete(v1));
2934 +
2935 +        checkCompletedWithWrappedCFException(g);
2936 +        checkCompletedNormally(f, v1);
2937 +    }}
2938 +
2939 +    /**
2940 +     * thenCompose result completes exceptionally if source cancelled
2941 +     */
2942 +    public void testThenCompose_sourceCancelled() {
2943 +        for (ExecutionMode m : ExecutionMode.values())
2944 +        for (boolean createIncomplete : new boolean[] { true, false })
2945 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2946 +    {
2947 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2948 +        final CompletableFutureInc r = new CompletableFutureInc(m);
2949 +        if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
2950 +        final CompletableFuture<Integer> g = m.thenCompose(f, r);
2951 +        if (createIncomplete) {
2952 +            checkIncomplete(g);
2953 +            assertTrue(f.cancel(mayInterruptIfRunning));
2954 +        }
2955 +
2956 +        checkCompletedWithWrappedCancellationException(g);
2957 +        checkCancelled(f);
2958 +    }}
2959 +
2960 +    // other static methods
2961 +
2962 +    /**
2963 +     * allOf(no component futures) returns a future completed normally
2964 +     * with the value null
2965 +     */
2966 +    public void testAllOf_empty() throws Exception {
2967 +        CompletableFuture<Void> f = CompletableFuture.allOf();
2968 +        checkCompletedNormally(f, null);
2969 +    }
2970 +
2971 +    /**
2972 +     * allOf returns a future completed normally with the value null
2973 +     * when all components complete normally
2974 +     */
2975 +    public void testAllOf_normal() throws Exception {
2976 +        for (int k = 1; k < 10; k++) {
2977 +            CompletableFuture<Integer>[] fs
2978 +                = (CompletableFuture<Integer>[]) new CompletableFuture[k];
2979 +            for (int i = 0; i < k; i++)
2980 +                fs[i] = new CompletableFuture<>();
2981 +            CompletableFuture<Void> f = CompletableFuture.allOf(fs);
2982 +            for (int i = 0; i < k; i++) {
2983 +                checkIncomplete(f);
2984 +                checkIncomplete(CompletableFuture.allOf(fs));
2985 +                fs[i].complete(one);
2986 +            }
2987 +            checkCompletedNormally(f, null);
2988 +            checkCompletedNormally(CompletableFuture.allOf(fs), null);
2989 +        }
2990 +    }
2991 +
2992 +    public void testAllOf_backwards() throws Exception {
2993 +        for (int k = 1; k < 10; k++) {
2994 +            CompletableFuture<Integer>[] fs
2995 +                = (CompletableFuture<Integer>[]) new CompletableFuture[k];
2996 +            for (int i = 0; i < k; i++)
2997 +                fs[i] = new CompletableFuture<>();
2998 +            CompletableFuture<Void> f = CompletableFuture.allOf(fs);
2999 +            for (int i = k - 1; i >= 0; i--) {
3000 +                checkIncomplete(f);
3001 +                checkIncomplete(CompletableFuture.allOf(fs));
3002 +                fs[i].complete(one);
3003 +            }
3004 +            checkCompletedNormally(f, null);
3005 +            checkCompletedNormally(CompletableFuture.allOf(fs), null);
3006 +        }
3007 +    }
3008 +
3009 +    public void testAllOf_exceptional() throws Exception {
3010 +        for (int k = 1; k < 10; k++) {
3011 +            CompletableFuture<Integer>[] fs
3012 +                = (CompletableFuture<Integer>[]) new CompletableFuture[k];
3013 +            CFException ex = new CFException();
3014 +            for (int i = 0; i < k; i++)
3015 +                fs[i] = new CompletableFuture<>();
3016 +            CompletableFuture<Void> f = CompletableFuture.allOf(fs);
3017 +            for (int i = 0; i < k; i++) {
3018 +                checkIncomplete(f);
3019 +                checkIncomplete(CompletableFuture.allOf(fs));
3020 +                if (i != k/2) {
3021 +                    fs[i].complete(i);
3022 +                    checkCompletedNormally(fs[i], i);
3023 +                } else {
3024 +                    fs[i].completeExceptionally(ex);
3025 +                    checkCompletedExceptionally(fs[i], ex);
3026 +                }
3027 +            }
3028 +            checkCompletedWithWrappedException(f, ex);
3029 +            checkCompletedWithWrappedException(CompletableFuture.allOf(fs), ex);
3030 +        }
3031 +    }
3032 +
3033 +    /**
3034 +     * anyOf(no component futures) returns an incomplete future
3035 +     */
3036 +    public void testAnyOf_empty() throws Exception {
3037 +        for (Integer v1 : new Integer[] { 1, null })
3038 +    {
3039 +        CompletableFuture<Object> f = CompletableFuture.anyOf();
3040 +        checkIncomplete(f);
3041 +
3042 +        f.complete(v1);
3043 +        checkCompletedNormally(f, v1);
3044 +    }}
3045 +
3046 +    /**
3047 +     * anyOf returns a future completed normally with a value when
3048 +     * a component future does
3049 +     */
3050 +    public void testAnyOf_normal() throws Exception {
3051 +        for (int k = 0; k < 10; k++) {
3052 +            CompletableFuture[] fs = new CompletableFuture[k];
3053 +            for (int i = 0; i < k; i++)
3054 +                fs[i] = new CompletableFuture<>();
3055 +            CompletableFuture<Object> f = CompletableFuture.anyOf(fs);
3056 +            checkIncomplete(f);
3057 +            for (int i = 0; i < k; i++) {
3058 +                fs[i].complete(i);
3059 +                checkCompletedNormally(f, 0);
3060 +                int x = (int) CompletableFuture.anyOf(fs).join();
3061 +                assertTrue(0 <= x && x <= i);
3062 +            }
3063 +        }
3064 +    }
3065 +    public void testAnyOf_normal_backwards() throws Exception {
3066 +        for (int k = 0; k < 10; k++) {
3067 +            CompletableFuture[] fs = new CompletableFuture[k];
3068 +            for (int i = 0; i < k; i++)
3069 +                fs[i] = new CompletableFuture<>();
3070 +            CompletableFuture<Object> f = CompletableFuture.anyOf(fs);
3071 +            checkIncomplete(f);
3072 +            for (int i = k - 1; i >= 0; i--) {
3073 +                fs[i].complete(i);
3074 +                checkCompletedNormally(f, k - 1);
3075 +                int x = (int) CompletableFuture.anyOf(fs).join();
3076 +                assertTrue(i <= x && x <= k - 1);
3077 +            }
3078 +        }
3079 +    }
3080 +
3081 +    /**
3082 +     * anyOf result completes exceptionally when any component does.
3083 +     */
3084 +    public void testAnyOf_exceptional() throws Exception {
3085 +        for (int k = 0; k < 10; k++) {
3086 +            CompletableFuture[] fs = new CompletableFuture[k];
3087 +            CFException[] exs = new CFException[k];
3088 +            for (int i = 0; i < k; i++) {
3089 +                fs[i] = new CompletableFuture<>();
3090 +                exs[i] = new CFException();
3091 +            }
3092 +            CompletableFuture<Object> f = CompletableFuture.anyOf(fs);
3093 +            checkIncomplete(f);
3094 +            for (int i = 0; i < k; i++) {
3095 +                fs[i].completeExceptionally(exs[i]);
3096 +                checkCompletedWithWrappedException(f, exs[0]);
3097 +                checkCompletedWithWrappedCFException(CompletableFuture.anyOf(fs));
3098 +            }
3099 +        }
3100      }
3101 +
3102 +    public void testAnyOf_exceptional_backwards() throws Exception {
3103 +        for (int k = 0; k < 10; k++) {
3104 +            CompletableFuture[] fs = new CompletableFuture[k];
3105 +            CFException[] exs = new CFException[k];
3106 +            for (int i = 0; i < k; i++) {
3107 +                fs[i] = new CompletableFuture<>();
3108 +                exs[i] = new CFException();
3109 +            }
3110 +            CompletableFuture<Object> f = CompletableFuture.anyOf(fs);
3111 +            checkIncomplete(f);
3112 +            for (int i = k - 1; i >= 0; i--) {
3113 +                fs[i].completeExceptionally(exs[i]);
3114 +                checkCompletedWithWrappedException(f, exs[k - 1]);
3115 +                checkCompletedWithWrappedCFException(CompletableFuture.anyOf(fs));
3116 +            }
3117 +        }
3118 +    }
3119 +
3120 +    /**
3121 +     * Completion methods throw NullPointerException with null arguments
3122 +     */
3123 +    public void testNPE() {
3124 +        CompletableFuture<Integer> f = new CompletableFuture<>();
3125 +        CompletableFuture<Integer> g = new CompletableFuture<>();
3126 +        CompletableFuture<Integer> nullFuture = (CompletableFuture<Integer>)null;
3127 +        CompletableFuture<?> h;
3128 +        ThreadExecutor exec = new ThreadExecutor();
3129 +
3130 +        Runnable[] throwingActions = {
3131 +            () -> CompletableFuture.supplyAsync(null),
3132 +            () -> CompletableFuture.supplyAsync(null, exec),
3133 +            () -> CompletableFuture.supplyAsync(new IntegerSupplier(ExecutionMode.DEFAULT, 42), null),
3134 +
3135 +            () -> CompletableFuture.runAsync(null),
3136 +            () -> CompletableFuture.runAsync(null, exec),
3137 +            () -> CompletableFuture.runAsync(() -> {}, null),
3138 +
3139 +            () -> f.completeExceptionally(null),
3140 +
3141 +            () -> f.thenApply(null),
3142 +            () -> f.thenApplyAsync(null),
3143 +            () -> f.thenApplyAsync((x) -> x, null),
3144 +            () -> f.thenApplyAsync(null, exec),
3145 +
3146 +            () -> f.thenAccept(null),
3147 +            () -> f.thenAcceptAsync(null),
3148 +            () -> f.thenAcceptAsync((x) -> {} , null),
3149 +            () -> f.thenAcceptAsync(null, exec),
3150 +
3151 +            () -> f.thenRun(null),
3152 +            () -> f.thenRunAsync(null),
3153 +            () -> f.thenRunAsync(() -> {} , null),
3154 +            () -> f.thenRunAsync(null, exec),
3155 +
3156 +            () -> f.thenCombine(g, null),
3157 +            () -> f.thenCombineAsync(g, null),
3158 +            () -> f.thenCombineAsync(g, null, exec),
3159 +            () -> f.thenCombine(nullFuture, (x, y) -> x),
3160 +            () -> f.thenCombineAsync(nullFuture, (x, y) -> x),
3161 +            () -> f.thenCombineAsync(nullFuture, (x, y) -> x, exec),
3162 +            () -> f.thenCombineAsync(g, (x, y) -> x, null),
3163 +
3164 +            () -> f.thenAcceptBoth(g, null),
3165 +            () -> f.thenAcceptBothAsync(g, null),
3166 +            () -> f.thenAcceptBothAsync(g, null, exec),
3167 +            () -> f.thenAcceptBoth(nullFuture, (x, y) -> {}),
3168 +            () -> f.thenAcceptBothAsync(nullFuture, (x, y) -> {}),
3169 +            () -> f.thenAcceptBothAsync(nullFuture, (x, y) -> {}, exec),
3170 +            () -> f.thenAcceptBothAsync(g, (x, y) -> {}, null),
3171 +
3172 +            () -> f.runAfterBoth(g, null),
3173 +            () -> f.runAfterBothAsync(g, null),
3174 +            () -> f.runAfterBothAsync(g, null, exec),
3175 +            () -> f.runAfterBoth(nullFuture, () -> {}),
3176 +            () -> f.runAfterBothAsync(nullFuture, () -> {}),
3177 +            () -> f.runAfterBothAsync(nullFuture, () -> {}, exec),
3178 +            () -> f.runAfterBothAsync(g, () -> {}, null),
3179 +
3180 +            () -> f.applyToEither(g, null),
3181 +            () -> f.applyToEitherAsync(g, null),
3182 +            () -> f.applyToEitherAsync(g, null, exec),
3183 +            () -> f.applyToEither(nullFuture, (x) -> x),
3184 +            () -> f.applyToEitherAsync(nullFuture, (x) -> x),
3185 +            () -> f.applyToEitherAsync(nullFuture, (x) -> x, exec),
3186 +            () -> f.applyToEitherAsync(g, (x) -> x, null),
3187 +
3188 +            () -> f.acceptEither(g, null),
3189 +            () -> f.acceptEitherAsync(g, null),
3190 +            () -> f.acceptEitherAsync(g, null, exec),
3191 +            () -> f.acceptEither(nullFuture, (x) -> {}),
3192 +            () -> f.acceptEitherAsync(nullFuture, (x) -> {}),
3193 +            () -> f.acceptEitherAsync(nullFuture, (x) -> {}, exec),
3194 +            () -> f.acceptEitherAsync(g, (x) -> {}, null),
3195 +
3196 +            () -> f.runAfterEither(g, null),
3197 +            () -> f.runAfterEitherAsync(g, null),
3198 +            () -> f.runAfterEitherAsync(g, null, exec),
3199 +            () -> f.runAfterEither(nullFuture, () -> {}),
3200 +            () -> f.runAfterEitherAsync(nullFuture, () -> {}),
3201 +            () -> f.runAfterEitherAsync(nullFuture, () -> {}, exec),
3202 +            () -> f.runAfterEitherAsync(g, () -> {}, null),
3203 +
3204 +            () -> f.thenCompose(null),
3205 +            () -> f.thenComposeAsync(null),
3206 +            () -> f.thenComposeAsync(new CompletableFutureInc(ExecutionMode.EXECUTOR), null),
3207 +            () -> f.thenComposeAsync(null, exec),
3208 +
3209 +            () -> f.exceptionally(null),
3210 +
3211 +            () -> f.handle(null),
3212 +
3213 +            () -> CompletableFuture.allOf((CompletableFuture<?>)null),
3214 +            () -> CompletableFuture.allOf((CompletableFuture<?>[])null),
3215 +            () -> CompletableFuture.allOf(f, null),
3216 +            () -> CompletableFuture.allOf(null, f),
3217 +
3218 +            () -> CompletableFuture.anyOf((CompletableFuture<?>)null),
3219 +            () -> CompletableFuture.anyOf((CompletableFuture<?>[])null),
3220 +            () -> CompletableFuture.anyOf(f, null),
3221 +            () -> CompletableFuture.anyOf(null, f),
3222 +
3223 +            () -> f.obtrudeException(null),
3224 +        };
3225 +
3226 +        assertThrows(NullPointerException.class, throwingActions);
3227 +        assertEquals(0, exec.count.get());
3228 +    }
3229 +
3230 +    /**
3231 +     * toCompletableFuture returns this CompletableFuture.
3232 +     */
3233 +    public void testToCompletableFuture() {
3234 +        CompletableFuture<Integer> f = new CompletableFuture<>();
3235 +        assertSame(f, f.toCompletableFuture());
3236 +    }
3237 +
3238 +    //--- tests of implementation details; not part of official tck ---
3239 +
3240 +    Object resultOf(CompletableFuture<?> f) {
3241 +        try {
3242 +            java.lang.reflect.Field resultField
3243 +                = CompletableFuture.class.getDeclaredField("result");
3244 +            resultField.setAccessible(true);
3245 +            return resultField.get(f);
3246 +        } catch (Throwable t) { throw new AssertionError(t); }
3247 +    }
3248 +
3249 +    public void testExceptionPropagationReusesResultObject() {
3250 +        if (!testImplementationDetails) return;
3251 +        for (ExecutionMode m : ExecutionMode.values())
3252 +    {
3253 +        final CFException ex = new CFException();
3254 +        final CompletableFuture<Integer> v42 = CompletableFuture.completedFuture(42);
3255 +        final CompletableFuture<Integer> incomplete = new CompletableFuture<>();
3256 +
3257 +        List<Function<CompletableFuture<Integer>, CompletableFuture<?>>> funs
3258 +            = new ArrayList<>();
3259 +
3260 +        funs.add((y) -> m.thenRun(y, new Noop(m)));
3261 +        funs.add((y) -> m.thenAccept(y, new NoopConsumer(m)));
3262 +        funs.add((y) -> m.thenApply(y, new IncFunction(m)));
3263 +
3264 +        funs.add((y) -> m.runAfterEither(y, incomplete, new Noop(m)));
3265 +        funs.add((y) -> m.acceptEither(y, incomplete, new NoopConsumer(m)));
3266 +        funs.add((y) -> m.applyToEither(y, incomplete, new IncFunction(m)));
3267 +
3268 +        funs.add((y) -> m.runAfterBoth(y, v42, new Noop(m)));
3269 +        funs.add((y) -> m.thenAcceptBoth(y, v42, new SubtractAction(m)));
3270 +        funs.add((y) -> m.thenCombine(y, v42, new SubtractFunction(m)));
3271 +
3272 +        funs.add((y) -> m.whenComplete(y, (Integer x, Throwable t) -> {}));
3273 +
3274 +        funs.add((y) -> m.thenCompose(y, new CompletableFutureInc(m)));
3275 +
3276 +        funs.add((y) -> CompletableFuture.allOf(new CompletableFuture<?>[] {y, v42}));
3277 +        funs.add((y) -> CompletableFuture.anyOf(new CompletableFuture<?>[] {y, incomplete}));
3278 +
3279 +        for (Function<CompletableFuture<Integer>, CompletableFuture<?>>
3280 +                 fun : funs) {
3281 +            CompletableFuture<Integer> f = new CompletableFuture<>();
3282 +            f.completeExceptionally(ex);
3283 +            CompletableFuture<Integer> src = m.thenApply(f, new IncFunction(m));
3284 +            checkCompletedWithWrappedException(src, ex);
3285 +            CompletableFuture<?> dep = fun.apply(src);
3286 +            checkCompletedWithWrappedException(dep, ex);
3287 +            assertSame(resultOf(src), resultOf(dep));
3288 +        }
3289 +
3290 +        for (Function<CompletableFuture<Integer>, CompletableFuture<?>>
3291 +                 fun : funs) {
3292 +            CompletableFuture<Integer> f = new CompletableFuture<>();
3293 +            CompletableFuture<Integer> src = m.thenApply(f, new IncFunction(m));
3294 +            CompletableFuture<?> dep = fun.apply(src);
3295 +            f.completeExceptionally(ex);
3296 +            checkCompletedWithWrappedException(src, ex);
3297 +            checkCompletedWithWrappedException(dep, ex);
3298 +            assertSame(resultOf(src), resultOf(dep));
3299 +        }
3300 +
3301 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
3302 +        for (Function<CompletableFuture<Integer>, CompletableFuture<?>>
3303 +                 fun : funs) {
3304 +            CompletableFuture<Integer> f = new CompletableFuture<>();
3305 +            f.cancel(mayInterruptIfRunning);
3306 +            checkCancelled(f);
3307 +            CompletableFuture<Integer> src = m.thenApply(f, new IncFunction(m));
3308 +            checkCompletedWithWrappedCancellationException(src);
3309 +            CompletableFuture<?> dep = fun.apply(src);
3310 +            checkCompletedWithWrappedCancellationException(dep);
3311 +            assertSame(resultOf(src), resultOf(dep));
3312 +        }
3313 +
3314 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
3315 +        for (Function<CompletableFuture<Integer>, CompletableFuture<?>>
3316 +                 fun : funs) {
3317 +            CompletableFuture<Integer> f = new CompletableFuture<>();
3318 +            CompletableFuture<Integer> src = m.thenApply(f, new IncFunction(m));
3319 +            CompletableFuture<?> dep = fun.apply(src);
3320 +            f.cancel(mayInterruptIfRunning);
3321 +            checkCancelled(f);
3322 +            checkCompletedWithWrappedCancellationException(src);
3323 +            checkCompletedWithWrappedCancellationException(dep);
3324 +            assertSame(resultOf(src), resultOf(dep));
3325 +        }
3326 +    }}
3327 +
3328   }

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