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Comparing jsr166/src/test/tck/CompletableFutureTest.java (file contents):
Revision 1.42 by jsr166, Mon Jun 2 02:19:23 2014 UTC vs.
Revision 1.105 by dl, Thu Sep 3 16:30:05 2015 UTC

# Line 5 | Line 5
5   * http://creativecommons.org/publicdomain/zero/1.0/
6   */
7  
8 < import junit.framework.*;
8 > import static java.util.concurrent.TimeUnit.MILLISECONDS;
9 > import static java.util.concurrent.TimeUnit.SECONDS;
10 >
11 > import java.util.ArrayList;
12 > import java.util.List;
13 > import java.util.Objects;
14   import java.util.concurrent.Callable;
10 import java.util.concurrent.Executor;
11 import java.util.concurrent.ExecutorService;
12 import java.util.concurrent.Executors;
15   import java.util.concurrent.CancellationException;
14 import java.util.concurrent.CountDownLatch;
15 import java.util.concurrent.ExecutionException;
16 import java.util.concurrent.Future;
16   import java.util.concurrent.CompletableFuture;
17   import java.util.concurrent.CompletionException;
18   import java.util.concurrent.CompletionStage;
19 + import java.util.concurrent.ExecutionException;
20 + import java.util.concurrent.Executor;
21 + import java.util.concurrent.ForkJoinPool;
22 + import java.util.concurrent.ForkJoinTask;
23   import java.util.concurrent.TimeoutException;
24 + import java.util.concurrent.TimeUnit;
25   import java.util.concurrent.atomic.AtomicInteger;
26 < import static java.util.concurrent.TimeUnit.MILLISECONDS;
23 < import static java.util.concurrent.TimeUnit.SECONDS;
24 < import java.util.*;
25 < import java.util.function.Supplier;
26 < import java.util.function.Consumer;
26 > import java.util.concurrent.atomic.AtomicReference;
27   import java.util.function.BiConsumer;
28 import java.util.function.Function;
28   import java.util.function.BiFunction;
29 + import java.util.function.Consumer;
30 + import java.util.function.Function;
31 + import java.util.function.Supplier;
32 +
33 + import junit.framework.Test;
34 + import junit.framework.TestSuite;
35  
36   public class CompletableFutureTest extends JSR166TestCase {
37  
38      public static void main(String[] args) {
39 <        junit.textui.TestRunner.run(suite());
39 >        main(suite(), args);
40      }
41      public static Test suite() {
42          return new TestSuite(CompletableFutureTest.class);
# Line 42 | Line 47 | public class CompletableFutureTest exten
47      void checkIncomplete(CompletableFuture<?> f) {
48          assertFalse(f.isDone());
49          assertFalse(f.isCancelled());
50 <        assertTrue(f.toString().contains("[Not completed]"));
50 >        assertTrue(f.toString().contains("Not completed"));
51          try {
52              assertNull(f.getNow(null));
53          } catch (Throwable fail) { threadUnexpectedException(fail); }
# Line 55 | Line 60 | public class CompletableFutureTest exten
60      }
61  
62      <T> void checkCompletedNormally(CompletableFuture<T> f, T value) {
63 <        try {
64 <            assertEquals(value, f.get(LONG_DELAY_MS, MILLISECONDS));
60 <        } catch (Throwable fail) { threadUnexpectedException(fail); }
63 >        checkTimedGet(f, value);
64 >
65          try {
66              assertEquals(value, f.join());
67          } catch (Throwable fail) { threadUnexpectedException(fail); }
# Line 74 | Line 78 | public class CompletableFutureTest exten
78      }
79  
80      void checkCompletedWithWrappedCFException(CompletableFuture<?> f) {
81 +        long startTime = System.nanoTime();
82 +        long timeoutMillis = LONG_DELAY_MS;
83          try {
84 <            f.get(LONG_DELAY_MS, MILLISECONDS);
84 >            f.get(timeoutMillis, MILLISECONDS);
85              shouldThrow();
86          } catch (ExecutionException success) {
87              assertTrue(success.getCause() instanceof CFException);
88          } catch (Throwable fail) { threadUnexpectedException(fail); }
89 +        assertTrue(millisElapsedSince(startTime) < timeoutMillis/2);
90 +
91          try {
92              f.join();
93              shouldThrow();
# Line 103 | Line 111 | public class CompletableFutureTest exten
111          assertTrue(f.toString().contains("[Completed exceptionally]"));
112      }
113  
114 <    void checkCompletedWithWrappedCFException(CompletableFuture<?> f,
115 <                                              CFException ex) {
114 >    <U> void checkCompletedExceptionallyWithRootCause(CompletableFuture<U> f,
115 >                                                      Throwable ex) {
116 >        long startTime = System.nanoTime();
117 >        long timeoutMillis = LONG_DELAY_MS;
118          try {
119 <            f.get(LONG_DELAY_MS, MILLISECONDS);
119 >            f.get(timeoutMillis, MILLISECONDS);
120              shouldThrow();
121          } catch (ExecutionException success) {
122              assertSame(ex, success.getCause());
123          } catch (Throwable fail) { threadUnexpectedException(fail); }
124 +        assertTrue(millisElapsedSince(startTime) < timeoutMillis/2);
125 +
126          try {
127              f.join();
128              shouldThrow();
# Line 129 | Line 141 | public class CompletableFutureTest exten
141          } catch (ExecutionException success) {
142              assertSame(ex, success.getCause());
143          } catch (Throwable fail) { threadUnexpectedException(fail); }
144 +
145          assertTrue(f.isDone());
146          assertFalse(f.isCancelled());
147          assertTrue(f.toString().contains("[Completed exceptionally]"));
148      }
149  
150 +    <U> void checkCompletedExceptionallyWithTimeout(CompletableFuture<U> f) {
151 +        long startTime = System.nanoTime();
152 +        long timeoutMillis = LONG_DELAY_MS;
153 +        try {
154 +            f.get(timeoutMillis, MILLISECONDS);
155 +            shouldThrow();
156 +        } catch (ExecutionException ex) {
157 +            assertTrue(ex.getCause() instanceof TimeoutException);
158 +        } catch (Throwable fail) { threadUnexpectedException(fail); }
159 +        assertTrue(millisElapsedSince(startTime) < timeoutMillis/2);
160 +
161 +        try {
162 +            f.join();
163 +            shouldThrow();
164 +        } catch (Throwable ex) {
165 +            assertTrue(ex.getCause() instanceof TimeoutException);
166 +        }
167 +
168 +        try {
169 +            f.getNow(null);
170 +            shouldThrow();
171 +        } catch (Throwable ex) {
172 +            assertTrue(ex.getCause() instanceof TimeoutException);
173 +        }
174 +
175 +        try {
176 +            f.get();
177 +            shouldThrow();
178 +        } catch (ExecutionException ex) {
179 +            assertTrue(ex.getCause() instanceof TimeoutException);
180 +        } catch (Throwable fail) { threadUnexpectedException(fail); }
181 +
182 +        assertTrue(f.isDone());
183 +        assertFalse(f.isCancelled());
184 +        assertTrue(f.toString().contains("[Completed exceptionally]"));
185 +    }
186 +
187 +    <U> void checkCompletedWithWrappedException(CompletableFuture<U> f,
188 +                                                Throwable ex) {
189 +        checkCompletedExceptionallyWithRootCause(f, ex);
190 +        try {
191 +            CompletableFuture<Throwable> spy = f.handle
192 +                ((U u, Throwable t) -> t);
193 +            assertTrue(spy.join() instanceof CompletionException);
194 +            assertSame(ex, spy.join().getCause());
195 +        } catch (Throwable fail) { threadUnexpectedException(fail); }
196 +    }
197 +
198 +    <U> void checkCompletedExceptionally(CompletableFuture<U> f, Throwable ex) {
199 +        checkCompletedExceptionallyWithRootCause(f, ex);
200 +        try {
201 +            CompletableFuture<Throwable> spy = f.handle
202 +                ((U u, Throwable t) -> t);
203 +            assertSame(ex, spy.join());
204 +        } catch (Throwable fail) { threadUnexpectedException(fail); }
205 +    }
206 +
207      void checkCancelled(CompletableFuture<?> f) {
208 +        long startTime = System.nanoTime();
209 +        long timeoutMillis = LONG_DELAY_MS;
210          try {
211 <            f.get(LONG_DELAY_MS, MILLISECONDS);
211 >            f.get(timeoutMillis, MILLISECONDS);
212              shouldThrow();
213          } catch (CancellationException success) {
214          } catch (Throwable fail) { threadUnexpectedException(fail); }
215 +        assertTrue(millisElapsedSince(startTime) < timeoutMillis/2);
216 +
217          try {
218              f.join();
219              shouldThrow();
# Line 160 | Line 234 | public class CompletableFutureTest exten
234      }
235  
236      void checkCompletedWithWrappedCancellationException(CompletableFuture<?> f) {
237 +        long startTime = System.nanoTime();
238 +        long timeoutMillis = LONG_DELAY_MS;
239          try {
240 <            f.get(LONG_DELAY_MS, MILLISECONDS);
240 >            f.get(timeoutMillis, MILLISECONDS);
241              shouldThrow();
242          } catch (ExecutionException success) {
243              assertTrue(success.getCause() instanceof CancellationException);
244          } catch (Throwable fail) { threadUnexpectedException(fail); }
245 +        assertTrue(millisElapsedSince(startTime) < timeoutMillis/2);
246 +
247          try {
248              f.join();
249              shouldThrow();
# Line 204 | Line 282 | public class CompletableFutureTest exten
282       * isCancelled, join, get, and getNow
283       */
284      public void testComplete() {
285 +        for (Integer v1 : new Integer[] { 1, null })
286 +    {
287          CompletableFuture<Integer> f = new CompletableFuture<>();
288          checkIncomplete(f);
289 <        f.complete(one);
290 <        checkCompletedNormally(f, one);
291 <    }
289 >        assertTrue(f.complete(v1));
290 >        assertFalse(f.complete(v1));
291 >        checkCompletedNormally(f, v1);
292 >    }}
293  
294      /**
295       * completeExceptionally completes exceptionally, as indicated by
# Line 216 | Line 297 | public class CompletableFutureTest exten
297       */
298      public void testCompleteExceptionally() {
299          CompletableFuture<Integer> f = new CompletableFuture<>();
300 +        CFException ex = new CFException();
301          checkIncomplete(f);
302 <        f.completeExceptionally(new CFException());
303 <        checkCompletedWithWrappedCFException(f);
302 >        f.completeExceptionally(ex);
303 >        checkCompletedExceptionally(f, ex);
304      }
305  
306      /**
# Line 226 | Line 308 | public class CompletableFutureTest exten
308       * methods isDone, isCancelled, join, get, and getNow
309       */
310      public void testCancel() {
311 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
312 +    {
313          CompletableFuture<Integer> f = new CompletableFuture<>();
314          checkIncomplete(f);
315 <        assertTrue(f.cancel(true));
315 >        assertTrue(f.cancel(mayInterruptIfRunning));
316 >        assertTrue(f.cancel(mayInterruptIfRunning));
317 >        assertTrue(f.cancel(!mayInterruptIfRunning));
318          checkCancelled(f);
319 <    }
319 >    }}
320  
321      /**
322       * obtrudeValue forces completion with given value
# Line 238 | Line 324 | public class CompletableFutureTest exten
324      public void testObtrudeValue() {
325          CompletableFuture<Integer> f = new CompletableFuture<>();
326          checkIncomplete(f);
327 <        f.complete(one);
327 >        assertTrue(f.complete(one));
328          checkCompletedNormally(f, one);
329          f.obtrudeValue(three);
330          checkCompletedNormally(f, three);
# Line 247 | Line 333 | public class CompletableFutureTest exten
333          f = new CompletableFuture<>();
334          f.obtrudeValue(three);
335          checkCompletedNormally(f, three);
336 +        f.obtrudeValue(null);
337 +        checkCompletedNormally(f, null);
338          f = new CompletableFuture<>();
339          f.completeExceptionally(new CFException());
340          f.obtrudeValue(four);
# Line 257 | Line 345 | public class CompletableFutureTest exten
345       * obtrudeException forces completion with given exception
346       */
347      public void testObtrudeException() {
348 <        CompletableFuture<Integer> f = new CompletableFuture<>();
349 <        checkIncomplete(f);
350 <        f.complete(one);
351 <        checkCompletedNormally(f, one);
352 <        f.obtrudeException(new CFException());
265 <        checkCompletedWithWrappedCFException(f);
348 >        for (Integer v1 : new Integer[] { 1, null })
349 >    {
350 >        CFException ex;
351 >        CompletableFuture<Integer> f;
352 >
353          f = new CompletableFuture<>();
354 <        f.obtrudeException(new CFException());
355 <        checkCompletedWithWrappedCFException(f);
354 >        assertTrue(f.complete(v1));
355 >        for (int i = 0; i < 2; i++) {
356 >            f.obtrudeException(ex = new CFException());
357 >            checkCompletedExceptionally(f, ex);
358 >        }
359 >
360 >        f = new CompletableFuture<>();
361 >        for (int i = 0; i < 2; i++) {
362 >            f.obtrudeException(ex = new CFException());
363 >            checkCompletedExceptionally(f, ex);
364 >        }
365 >
366          f = new CompletableFuture<>();
367 +        f.completeExceptionally(ex = new CFException());
368 +        f.obtrudeValue(v1);
369 +        checkCompletedNormally(f, v1);
370 +        f.obtrudeException(ex = new CFException());
371 +        checkCompletedExceptionally(f, ex);
372          f.completeExceptionally(new CFException());
373 <        f.obtrudeValue(four);
374 <        checkCompletedNormally(f, four);
375 <        f.obtrudeException(new CFException());
376 <        checkCompletedWithWrappedCFException(f);
275 <    }
373 >        checkCompletedExceptionally(f, ex);
374 >        assertFalse(f.complete(v1));
375 >        checkCompletedExceptionally(f, ex);
376 >    }}
377  
378      /**
379       * getNumberOfDependents returns number of dependent tasks
380       */
381      public void testGetNumberOfDependents() {
382 +        for (ExecutionMode m : ExecutionMode.values())
383 +        for (Integer v1 : new Integer[] { 1, null })
384 +    {
385          CompletableFuture<Integer> f = new CompletableFuture<>();
386 <        assertEquals(f.getNumberOfDependents(), 0);
387 <        CompletableFuture g = f.thenRun(new Noop());
388 <        assertEquals(f.getNumberOfDependents(), 1);
389 <        assertEquals(g.getNumberOfDependents(), 0);
390 <        CompletableFuture h = f.thenRun(new Noop());
391 <        assertEquals(f.getNumberOfDependents(), 2);
392 <        f.complete(1);
386 >        assertEquals(0, f.getNumberOfDependents());
387 >        final CompletableFuture<Void> g = m.thenRun(f, new Noop(m));
388 >        assertEquals(1, f.getNumberOfDependents());
389 >        assertEquals(0, g.getNumberOfDependents());
390 >        final CompletableFuture<Void> h = m.thenRun(f, new Noop(m));
391 >        assertEquals(2, f.getNumberOfDependents());
392 >        assertEquals(0, h.getNumberOfDependents());
393 >        assertTrue(f.complete(v1));
394          checkCompletedNormally(g, null);
395 <        assertEquals(f.getNumberOfDependents(), 0);
396 <        assertEquals(g.getNumberOfDependents(), 0);
397 <    }
395 >        checkCompletedNormally(h, null);
396 >        assertEquals(0, f.getNumberOfDependents());
397 >        assertEquals(0, g.getNumberOfDependents());
398 >        assertEquals(0, h.getNumberOfDependents());
399 >    }}
400  
401      /**
402       * toString indicates current completion state
# Line 300 | Line 407 | public class CompletableFutureTest exten
407          f = new CompletableFuture<String>();
408          assertTrue(f.toString().contains("[Not completed]"));
409  
410 <        f.complete("foo");
410 >        assertTrue(f.complete("foo"));
411          assertTrue(f.toString().contains("[Completed normally]"));
412  
413          f = new CompletableFuture<String>();
414 <        f.completeExceptionally(new IndexOutOfBoundsException());
414 >        assertTrue(f.completeExceptionally(new IndexOutOfBoundsException()));
415          assertTrue(f.toString().contains("[Completed exceptionally]"));
416 +
417 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false }) {
418 +            f = new CompletableFuture<String>();
419 +            assertTrue(f.cancel(mayInterruptIfRunning));
420 +            assertTrue(f.toString().contains("[Completed exceptionally]"));
421 +        }
422      }
423  
424      /**
# Line 316 | Line 429 | public class CompletableFutureTest exten
429          checkCompletedNormally(f, "test");
430      }
431  
432 <    // Choose non-commutative actions for better coverage
432 >    abstract class CheckedAction {
433 >        int invocationCount = 0;
434 >        final ExecutionMode m;
435 >        CheckedAction(ExecutionMode m) { this.m = m; }
436 >        void invoked() {
437 >            m.checkExecutionMode();
438 >            assertEquals(0, invocationCount++);
439 >        }
440 >        void assertNotInvoked() { assertEquals(0, invocationCount); }
441 >        void assertInvoked() { assertEquals(1, invocationCount); }
442 >    }
443  
444 <    // A non-commutative function that handles and produces null values as well.
445 <    static Integer subtract(Integer x, Integer y) {
446 <        return (x == null && y == null) ? null :
447 <            ((x == null) ? 42 : x.intValue())
448 <            - ((y == null) ? 99 : y.intValue());
444 >    abstract class CheckedIntegerAction extends CheckedAction {
445 >        Integer value;
446 >        CheckedIntegerAction(ExecutionMode m) { super(m); }
447 >        void assertValue(Integer expected) {
448 >            assertInvoked();
449 >            assertEquals(expected, value);
450 >        }
451 >    }
452 >
453 >    class IntegerSupplier extends CheckedAction
454 >        implements Supplier<Integer>
455 >    {
456 >        final Integer value;
457 >        IntegerSupplier(ExecutionMode m, Integer value) {
458 >            super(m);
459 >            this.value = value;
460 >        }
461 >        public Integer get() {
462 >            invoked();
463 >            return value;
464 >        }
465      }
466  
467      // A function that handles and produces null values as well.
# Line 330 | Line 469 | public class CompletableFutureTest exten
469          return (x == null) ? null : x + 1;
470      }
471  
472 <    static final Supplier<Integer> supplyOne =
473 <        () -> Integer.valueOf(1);
474 <    static final Function<Integer, Integer> inc =
475 <        (Integer x) -> Integer.valueOf(x.intValue() + 1);
337 <    static final BiFunction<Integer, Integer, Integer> subtract =
338 <        (Integer x, Integer y) -> subtract(x, y);
339 <    static final class IncAction implements Consumer<Integer> {
340 <        int invocationCount = 0;
341 <        Integer value;
342 <        public boolean ran() { return invocationCount == 1; }
472 >    class NoopConsumer extends CheckedIntegerAction
473 >        implements Consumer<Integer>
474 >    {
475 >        NoopConsumer(ExecutionMode m) { super(m); }
476          public void accept(Integer x) {
477 <            invocationCount++;
478 <            value = inc(x);
477 >            invoked();
478 >            value = x;
479          }
480      }
481 <    static final class IncFunction implements Function<Integer,Integer> {
482 <        int invocationCount = 0;
483 <        Integer value;
484 <        public boolean ran() { return invocationCount == 1; }
481 >
482 >    class IncFunction extends CheckedIntegerAction
483 >        implements Function<Integer,Integer>
484 >    {
485 >        IncFunction(ExecutionMode m) { super(m); }
486          public Integer apply(Integer x) {
487 <            invocationCount++;
487 >            invoked();
488              return value = inc(x);
489          }
490      }
491 <    static final class SubtractAction implements BiConsumer<Integer, Integer> {
492 <        int invocationCount = 0;
493 <        Integer value;
494 <        // Check this action was invoked exactly once when result is computed.
495 <        public boolean ran() { return invocationCount == 1; }
491 >
492 >    // Choose non-commutative actions for better coverage
493 >    // A non-commutative function that handles and produces null values as well.
494 >    static Integer subtract(Integer x, Integer y) {
495 >        return (x == null && y == null) ? null :
496 >            ((x == null) ? 42 : x.intValue())
497 >            - ((y == null) ? 99 : y.intValue());
498 >    }
499 >
500 >    class SubtractAction extends CheckedIntegerAction
501 >        implements BiConsumer<Integer, Integer>
502 >    {
503 >        SubtractAction(ExecutionMode m) { super(m); }
504          public void accept(Integer x, Integer y) {
505 <            invocationCount++;
505 >            invoked();
506              value = subtract(x, y);
507          }
508      }
509 <    static final class SubtractFunction implements BiFunction<Integer, Integer, Integer> {
510 <        int invocationCount = 0;
511 <        Integer value;
512 <        // Check this action was invoked exactly once when result is computed.
513 <        public boolean ran() { return invocationCount == 1; }
509 >
510 >    class SubtractFunction extends CheckedIntegerAction
511 >        implements BiFunction<Integer, Integer, Integer>
512 >    {
513 >        SubtractFunction(ExecutionMode m) { super(m); }
514          public Integer apply(Integer x, Integer y) {
515 <            invocationCount++;
515 >            invoked();
516              return value = subtract(x, y);
517          }
518      }
519 <    static final class Noop implements Runnable {
520 <        int invocationCount = 0;
521 <        boolean ran;
519 >
520 >    class Noop extends CheckedAction implements Runnable {
521 >        Noop(ExecutionMode m) { super(m); }
522          public void run() {
523 <            invocationCount++;
382 <            ran = true;
523 >            invoked();
524          }
525      }
526  
527 <    static final class FailingSupplier implements Supplier<Integer> {
528 <        boolean ran;
529 <        public Integer get() { ran = true; throw new CFException(); }
527 >    class FailingSupplier extends CheckedAction
528 >        implements Supplier<Integer>
529 >    {
530 >        FailingSupplier(ExecutionMode m) { super(m); }
531 >        public Integer get() {
532 >            invoked();
533 >            throw new CFException();
534 >        }
535      }
536 <    static final class FailingConsumer implements Consumer<Integer> {
537 <        boolean ran;
538 <        public void accept(Integer x) { ran = true; throw new CFException(); }
536 >
537 >    class FailingConsumer extends CheckedIntegerAction
538 >        implements Consumer<Integer>
539 >    {
540 >        FailingConsumer(ExecutionMode m) { super(m); }
541 >        public void accept(Integer x) {
542 >            invoked();
543 >            value = x;
544 >            throw new CFException();
545 >        }
546      }
547 <    static final class FailingBiConsumer implements BiConsumer<Integer, Integer> {
548 <        boolean ran;
549 <        public void accept(Integer x, Integer y) { ran = true; throw new CFException(); }
547 >
548 >    class FailingBiConsumer extends CheckedIntegerAction
549 >        implements BiConsumer<Integer, Integer>
550 >    {
551 >        FailingBiConsumer(ExecutionMode m) { super(m); }
552 >        public void accept(Integer x, Integer y) {
553 >            invoked();
554 >            value = subtract(x, y);
555 >            throw new CFException();
556 >        }
557      }
558 <    static final class FailingFunction implements Function<Integer, Integer> {
559 <        boolean ran;
560 <        public Integer apply(Integer x) { ran = true; throw new CFException(); }
558 >
559 >    class FailingFunction extends CheckedIntegerAction
560 >        implements Function<Integer, Integer>
561 >    {
562 >        FailingFunction(ExecutionMode m) { super(m); }
563 >        public Integer apply(Integer x) {
564 >            invoked();
565 >            value = x;
566 >            throw new CFException();
567 >        }
568      }
569 <    static final class FailingBiFunction implements BiFunction<Integer, Integer, Integer> {
570 <        boolean ran;
571 <        public Integer apply(Integer x, Integer y) { ran = true; throw new CFException(); }
569 >
570 >    class FailingBiFunction extends CheckedIntegerAction
571 >        implements BiFunction<Integer, Integer, Integer>
572 >    {
573 >        FailingBiFunction(ExecutionMode m) { super(m); }
574 >        public Integer apply(Integer x, Integer y) {
575 >            invoked();
576 >            value = subtract(x, y);
577 >            throw new CFException();
578 >        }
579      }
580 <    static final class FailingNoop implements Runnable {
581 <        boolean ran;
582 <        public void run() { ran = true; throw new CFException(); }
580 >
581 >    class FailingRunnable extends CheckedAction implements Runnable {
582 >        FailingRunnable(ExecutionMode m) { super(m); }
583 >        public void run() {
584 >            invoked();
585 >            throw new CFException();
586 >        }
587      }
588  
589 <    static final class CompletableFutureInc
590 <        implements Function<Integer, CompletableFuture<Integer>> {
591 <        boolean ran;
589 >    class CompletableFutureInc extends CheckedIntegerAction
590 >        implements Function<Integer, CompletableFuture<Integer>>
591 >    {
592 >        CompletableFutureInc(ExecutionMode m) { super(m); }
593          public CompletableFuture<Integer> apply(Integer x) {
594 <            ran = true;
594 >            invoked();
595 >            value = x;
596              CompletableFuture<Integer> f = new CompletableFuture<>();
597 <            f.complete(Integer.valueOf(x.intValue() + 1));
597 >            assertTrue(f.complete(inc(x)));
598              return f;
599          }
600      }
601  
602 <    static final class FailingCompletableFutureFunction
603 <        implements Function<Integer, CompletableFuture<Integer>> {
604 <        boolean ran;
602 >    class FailingCompletableFutureFunction extends CheckedIntegerAction
603 >        implements Function<Integer, CompletableFuture<Integer>>
604 >    {
605 >        FailingCompletableFutureFunction(ExecutionMode m) { super(m); }
606          public CompletableFuture<Integer> apply(Integer x) {
607 <            ran = true; throw new CFException();
607 >            invoked();
608 >            value = x;
609 >            throw new CFException();
610          }
611      }
612  
613      // Used for explicit executor tests
614      static final class ThreadExecutor implements Executor {
615 <        AtomicInteger count = new AtomicInteger(0);
615 >        final AtomicInteger count = new AtomicInteger(0);
616 >        static final ThreadGroup tg = new ThreadGroup("ThreadExecutor");
617 >        static boolean startedCurrentThread() {
618 >            return Thread.currentThread().getThreadGroup() == tg;
619 >        }
620  
621          public void execute(Runnable r) {
622              count.getAndIncrement();
623 <            new Thread(r).start();
623 >            new Thread(tg, r).start();
624          }
625      }
626  
627 <    static final class ExceptionToInteger implements Function<Throwable, Integer> {
628 <        public Integer apply(Throwable x) { return Integer.valueOf(3); }
442 <    }
443 <
444 <    static final class IntegerHandler implements BiFunction<Integer, Throwable, Integer> {
445 <        boolean ran;
446 <        public Integer apply(Integer x, Throwable t) {
447 <            ran = true;
448 <            return (t == null) ? two : three;
449 <        }
450 <    }
627 >    static final boolean defaultExecutorIsCommonPool
628 >        = ForkJoinPool.getCommonPoolParallelism() > 1;
629  
630      /**
631       * Permits the testing of parallel code for the 3 different
632 <     * execution modes without repeating all the testing code.
632 >     * execution modes without copy/pasting all the test methods.
633       */
634      enum ExecutionMode {
635 <        DEFAULT {
635 >        SYNC {
636 >            public void checkExecutionMode() {
637 >                assertFalse(ThreadExecutor.startedCurrentThread());
638 >                assertNull(ForkJoinTask.getPool());
639 >            }
640 >            public CompletableFuture<Void> runAsync(Runnable a) {
641 >                throw new UnsupportedOperationException();
642 >            }
643 >            public <U> CompletableFuture<U> supplyAsync(Supplier<U> a) {
644 >                throw new UnsupportedOperationException();
645 >            }
646 >            public <T> CompletableFuture<Void> thenRun
647 >                (CompletableFuture<T> f, Runnable a) {
648 >                return f.thenRun(a);
649 >            }
650 >            public <T> CompletableFuture<Void> thenAccept
651 >                (CompletableFuture<T> f, Consumer<? super T> a) {
652 >                return f.thenAccept(a);
653 >            }
654 >            public <T,U> CompletableFuture<U> thenApply
655 >                (CompletableFuture<T> f, Function<? super T,U> a) {
656 >                return f.thenApply(a);
657 >            }
658 >            public <T,U> CompletableFuture<U> thenCompose
659 >                (CompletableFuture<T> f,
660 >                 Function<? super T,? extends CompletionStage<U>> a) {
661 >                return f.thenCompose(a);
662 >            }
663 >            public <T,U> CompletableFuture<U> handle
664 >                (CompletableFuture<T> f,
665 >                 BiFunction<? super T,Throwable,? extends U> a) {
666 >                return f.handle(a);
667 >            }
668 >            public <T> CompletableFuture<T> whenComplete
669 >                (CompletableFuture<T> f,
670 >                 BiConsumer<? super T,? super Throwable> a) {
671 >                return f.whenComplete(a);
672 >            }
673              public <T,U> CompletableFuture<Void> runAfterBoth
674                  (CompletableFuture<T> f, CompletableFuture<U> g, Runnable a) {
675                  return f.runAfterBoth(g, a);
# Line 471 | Line 686 | public class CompletableFutureTest exten
686                   BiFunction<? super T,? super U,? extends V> a) {
687                  return f.thenCombine(g, a);
688              }
689 <            public <T,U> CompletableFuture<U> applyToEither
689 >            public <T> CompletableFuture<Void> runAfterEither
690                  (CompletableFuture<T> f,
691 <                 CompletionStage<? extends T> g,
692 <                 Function<? super T,U> a) {
693 <                return f.applyToEither(g, a);
691 >                 CompletionStage<?> g,
692 >                 java.lang.Runnable a) {
693 >                return f.runAfterEither(g, a);
694              }
695              public <T> CompletableFuture<Void> acceptEither
696                  (CompletableFuture<T> f,
# Line 483 | Line 698 | public class CompletableFutureTest exten
698                   Consumer<? super T> a) {
699                  return f.acceptEither(g, a);
700              }
701 <            public <T> CompletableFuture<Void> runAfterEither
701 >            public <T,U> CompletableFuture<U> applyToEither
702                  (CompletableFuture<T> f,
703 <                 CompletionStage<?> g,
704 <                 java.lang.Runnable a) {
705 <                return f.runAfterEither(g, a);
703 >                 CompletionStage<? extends T> g,
704 >                 Function<? super T,U> a) {
705 >                return f.applyToEither(g, a);
706 >            }
707 >        },
708 >
709 >        ASYNC {
710 >            public void checkExecutionMode() {
711 >                assertEquals(defaultExecutorIsCommonPool,
712 >                             (ForkJoinPool.commonPool() == ForkJoinTask.getPool()));
713 >            }
714 >            public CompletableFuture<Void> runAsync(Runnable a) {
715 >                return CompletableFuture.runAsync(a);
716 >            }
717 >            public <U> CompletableFuture<U> supplyAsync(Supplier<U> a) {
718 >                return CompletableFuture.supplyAsync(a);
719 >            }
720 >            public <T> CompletableFuture<Void> thenRun
721 >                (CompletableFuture<T> f, Runnable a) {
722 >                return f.thenRunAsync(a);
723 >            }
724 >            public <T> CompletableFuture<Void> thenAccept
725 >                (CompletableFuture<T> f, Consumer<? super T> a) {
726 >                return f.thenAcceptAsync(a);
727 >            }
728 >            public <T,U> CompletableFuture<U> thenApply
729 >                (CompletableFuture<T> f, Function<? super T,U> a) {
730 >                return f.thenApplyAsync(a);
731              }
732              public <T,U> CompletableFuture<U> thenCompose
733                  (CompletableFuture<T> f,
734                   Function<? super T,? extends CompletionStage<U>> a) {
735 <                return f.thenCompose(a);
735 >                return f.thenComposeAsync(a);
736 >            }
737 >            public <T,U> CompletableFuture<U> handle
738 >                (CompletableFuture<T> f,
739 >                 BiFunction<? super T,Throwable,? extends U> a) {
740 >                return f.handleAsync(a);
741              }
742              public <T> CompletableFuture<T> whenComplete
743                  (CompletableFuture<T> f,
744                   BiConsumer<? super T,? super Throwable> a) {
745 <                return f.whenComplete(a);
745 >                return f.whenCompleteAsync(a);
746              }
502        },
503
504 //             /** Experimental way to do more testing */
505 //         REVERSE_DEFAULT {
506 //             public <T,U> CompletableFuture<Void> runAfterBoth
507 //                 (CompletableFuture<T> f, CompletableFuture<U> g, Runnable a) {
508 //                 return g.runAfterBoth(f, a);
509 //             }
510 //             public <T,U> CompletableFuture<Void> thenAcceptBoth
511 //                 (CompletableFuture<T> f,
512 //                  CompletionStage<? extends U> g,
513 //                  BiConsumer<? super T,? super U> a) {
514 //                 return DEFAULT.thenAcceptBoth(f, g, a);
515 //             }
516 //         },
517
518        DEFAULT_ASYNC {
747              public <T,U> CompletableFuture<Void> runAfterBoth
748                  (CompletableFuture<T> f, CompletableFuture<U> g, Runnable a) {
749                  return f.runAfterBothAsync(g, a);
# Line 532 | Line 760 | public class CompletableFutureTest exten
760                   BiFunction<? super T,? super U,? extends V> a) {
761                  return f.thenCombineAsync(g, a);
762              }
763 <            public <T,U> CompletableFuture<U> applyToEither
763 >            public <T> CompletableFuture<Void> runAfterEither
764                  (CompletableFuture<T> f,
765 <                 CompletionStage<? extends T> g,
766 <                 Function<? super T,U> a) {
767 <                return f.applyToEitherAsync(g, a);
765 >                 CompletionStage<?> g,
766 >                 java.lang.Runnable a) {
767 >                return f.runAfterEitherAsync(g, a);
768              }
769              public <T> CompletableFuture<Void> acceptEither
770                  (CompletableFuture<T> f,
# Line 544 | Line 772 | public class CompletableFutureTest exten
772                   Consumer<? super T> a) {
773                  return f.acceptEitherAsync(g, a);
774              }
775 <            public <T> CompletableFuture<Void> runAfterEither
775 >            public <T,U> CompletableFuture<U> applyToEither
776                  (CompletableFuture<T> f,
777 <                 CompletionStage<?> g,
778 <                 java.lang.Runnable a) {
779 <                return f.runAfterEitherAsync(g, a);
777 >                 CompletionStage<? extends T> g,
778 >                 Function<? super T,U> a) {
779 >                return f.applyToEitherAsync(g, a);
780 >            }
781 >        },
782 >
783 >        EXECUTOR {
784 >            public void checkExecutionMode() {
785 >                assertTrue(ThreadExecutor.startedCurrentThread());
786 >            }
787 >            public CompletableFuture<Void> runAsync(Runnable a) {
788 >                return CompletableFuture.runAsync(a, new ThreadExecutor());
789 >            }
790 >            public <U> CompletableFuture<U> supplyAsync(Supplier<U> a) {
791 >                return CompletableFuture.supplyAsync(a, new ThreadExecutor());
792 >            }
793 >            public <T> CompletableFuture<Void> thenRun
794 >                (CompletableFuture<T> f, Runnable a) {
795 >                return f.thenRunAsync(a, new ThreadExecutor());
796 >            }
797 >            public <T> CompletableFuture<Void> thenAccept
798 >                (CompletableFuture<T> f, Consumer<? super T> a) {
799 >                return f.thenAcceptAsync(a, new ThreadExecutor());
800 >            }
801 >            public <T,U> CompletableFuture<U> thenApply
802 >                (CompletableFuture<T> f, Function<? super T,U> a) {
803 >                return f.thenApplyAsync(a, new ThreadExecutor());
804              }
805              public <T,U> CompletableFuture<U> thenCompose
806                  (CompletableFuture<T> f,
807                   Function<? super T,? extends CompletionStage<U>> a) {
808 <                return f.thenComposeAsync(a);
808 >                return f.thenComposeAsync(a, new ThreadExecutor());
809 >            }
810 >            public <T,U> CompletableFuture<U> handle
811 >                (CompletableFuture<T> f,
812 >                 BiFunction<? super T,Throwable,? extends U> a) {
813 >                return f.handleAsync(a, new ThreadExecutor());
814              }
815              public <T> CompletableFuture<T> whenComplete
816                  (CompletableFuture<T> f,
817                   BiConsumer<? super T,? super Throwable> a) {
818 <                return f.whenCompleteAsync(a);
818 >                return f.whenCompleteAsync(a, new ThreadExecutor());
819              }
563        },
564
565 //         REVERSE_DEFAULT_ASYNC {
566 //             public <T,U> CompletableFuture<Void> runAfterBoth
567 //                 (CompletableFuture<T> f, CompletableFuture<U> g, Runnable a) {
568 //                 return f.runAfterBothAsync(g, a);
569 //             }
570 //             public <T,U> CompletableFuture<Void> thenAcceptBoth
571 //                 (CompletableFuture<T> f,
572 //                  CompletionStage<? extends U> g,
573 //                  BiConsumer<? super T,? super U> a) {
574 //                 return DEFAULT_ASYNC.thenAcceptBoth(f, g, a);
575 //             }
576 //         },
577
578        EXECUTOR {
820              public <T,U> CompletableFuture<Void> runAfterBoth
821                  (CompletableFuture<T> f, CompletableFuture<U> g, Runnable a) {
822                  return f.runAfterBothAsync(g, a, new ThreadExecutor());
# Line 592 | Line 833 | public class CompletableFutureTest exten
833                   BiFunction<? super T,? super U,? extends V> a) {
834                  return f.thenCombineAsync(g, a, new ThreadExecutor());
835              }
595            public <T,U> CompletableFuture<U> applyToEither
596                (CompletableFuture<T> f,
597                 CompletionStage<? extends T> g,
598                 Function<? super T,U> a) {
599                return f.applyToEitherAsync(g, a, new ThreadExecutor());
600            }
601            public <T> CompletableFuture<Void> acceptEither
602                (CompletableFuture<T> f,
603                 CompletionStage<? extends T> g,
604                 Consumer<? super T> a) {
605                return f.acceptEitherAsync(g, a, new ThreadExecutor());
606            }
836              public <T> CompletableFuture<Void> runAfterEither
837                  (CompletableFuture<T> f,
838                   CompletionStage<?> g,
839                   java.lang.Runnable a) {
840                  return f.runAfterEitherAsync(g, a, new ThreadExecutor());
841              }
842 <            public <T,U> CompletableFuture<U> thenCompose
842 >            public <T> CompletableFuture<Void> acceptEither
843                  (CompletableFuture<T> f,
844 <                 Function<? super T,? extends CompletionStage<U>> a) {
845 <                return f.thenComposeAsync(a, new ThreadExecutor());
844 >                 CompletionStage<? extends T> g,
845 >                 Consumer<? super T> a) {
846 >                return f.acceptEitherAsync(g, a, new ThreadExecutor());
847              }
848 <            public <T> CompletableFuture<T> whenComplete
848 >            public <T,U> CompletableFuture<U> applyToEither
849                  (CompletableFuture<T> f,
850 <                 BiConsumer<? super T,? super Throwable> a) {
851 <                return f.whenCompleteAsync(a, new ThreadExecutor());
850 >                 CompletionStage<? extends T> g,
851 >                 Function<? super T,U> a) {
852 >                return f.applyToEitherAsync(g, a, new ThreadExecutor());
853              }
854          };
855  
856 +        public abstract void checkExecutionMode();
857 +        public abstract CompletableFuture<Void> runAsync(Runnable a);
858 +        public abstract <U> CompletableFuture<U> supplyAsync(Supplier<U> a);
859 +        public abstract <T> CompletableFuture<Void> thenRun
860 +            (CompletableFuture<T> f, Runnable a);
861 +        public abstract <T> CompletableFuture<Void> thenAccept
862 +            (CompletableFuture<T> f, Consumer<? super T> a);
863 +        public abstract <T,U> CompletableFuture<U> thenApply
864 +            (CompletableFuture<T> f, Function<? super T,U> a);
865 +        public abstract <T,U> CompletableFuture<U> thenCompose
866 +            (CompletableFuture<T> f,
867 +             Function<? super T,? extends CompletionStage<U>> a);
868 +        public abstract <T,U> CompletableFuture<U> handle
869 +            (CompletableFuture<T> f,
870 +             BiFunction<? super T,Throwable,? extends U> a);
871 +        public abstract <T> CompletableFuture<T> whenComplete
872 +            (CompletableFuture<T> f,
873 +             BiConsumer<? super T,? super Throwable> a);
874          public abstract <T,U> CompletableFuture<Void> runAfterBoth
875              (CompletableFuture<T> f, CompletableFuture<U> g, Runnable a);
876          public abstract <T,U> CompletableFuture<Void> thenAcceptBoth
# Line 632 | Line 881 | public class CompletableFutureTest exten
881              (CompletableFuture<T> f,
882               CompletionStage<? extends U> g,
883               BiFunction<? super T,? super U,? extends V> a);
635        public abstract <T,U> CompletableFuture<U> applyToEither
636            (CompletableFuture<T> f,
637             CompletionStage<? extends T> g,
638             Function<? super T,U> a);
639        public abstract <T> CompletableFuture<Void> acceptEither
640            (CompletableFuture<T> f,
641             CompletionStage<? extends T> g,
642             Consumer<? super T> a);
884          public abstract <T> CompletableFuture<Void> runAfterEither
885              (CompletableFuture<T> f,
886               CompletionStage<?> g,
887               java.lang.Runnable a);
888 <        public abstract <T,U> CompletableFuture<U> thenCompose
888 >        public abstract <T> CompletableFuture<Void> acceptEither
889              (CompletableFuture<T> f,
890 <             Function<? super T,? extends CompletionStage<U>> a);
891 <        public abstract <T> CompletableFuture<T> whenComplete
890 >             CompletionStage<? extends T> g,
891 >             Consumer<? super T> a);
892 >        public abstract <T,U> CompletableFuture<U> applyToEither
893              (CompletableFuture<T> f,
894 <             BiConsumer<? super T,? super Throwable> a);
895 <
654 <
655 <    }
656 <
657 <    /**
658 <     * exceptionally action completes with function value on source
659 <     * exception; otherwise with source value
660 <     */
661 <    public void testExceptionally() {
662 <        CompletableFuture<Integer> f = new CompletableFuture<>();
663 <        ExceptionToInteger r = new ExceptionToInteger();
664 <        CompletableFuture<Integer> g = f.exceptionally(r);
665 <        f.completeExceptionally(new CFException());
666 <        checkCompletedNormally(g, three);
667 <
668 <        f = new CompletableFuture<>();
669 <        r = new ExceptionToInteger();
670 <        g = f.exceptionally(r);
671 <        f.complete(one);
672 <        checkCompletedNormally(g, one);
673 <    }
674 <
675 <    /**
676 <     * handle action completes normally with function value on either
677 <     * normal or exceptional completion of source
678 <     */
679 <    public void testHandle() {
680 <        CompletableFuture<Integer> f, g;
681 <        IntegerHandler r;
682 <
683 <        f = new CompletableFuture<>();
684 <        f.completeExceptionally(new CFException());
685 <        g = f.handle(r = new IntegerHandler());
686 <        assertTrue(r.ran);
687 <        checkCompletedNormally(g, three);
688 <
689 <        f = new CompletableFuture<>();
690 <        g = f.handle(r = new IntegerHandler());
691 <        assertFalse(r.ran);
692 <        f.completeExceptionally(new CFException());
693 <        checkCompletedNormally(g, three);
694 <        assertTrue(r.ran);
695 <
696 <        f = new CompletableFuture<>();
697 <        f.complete(one);
698 <        g = f.handle(r = new IntegerHandler());
699 <        assertTrue(r.ran);
700 <        checkCompletedNormally(g, two);
701 <
702 <        f = new CompletableFuture<>();
703 <        g = f.handle(r = new IntegerHandler());
704 <        assertFalse(r.ran);
705 <        f.complete(one);
706 <        assertTrue(r.ran);
707 <        checkCompletedNormally(g, two);
708 <    }
709 <
710 <    /**
711 <     * runAsync completes after running Runnable
712 <     */
713 <    public void testRunAsync() {
714 <        Noop r = new Noop();
715 <        CompletableFuture<Void> f = CompletableFuture.runAsync(r);
716 <        assertNull(f.join());
717 <        assertTrue(r.ran);
718 <        checkCompletedNormally(f, null);
719 <    }
720 <
721 <    /**
722 <     * runAsync with executor completes after running Runnable
723 <     */
724 <    public void testRunAsync2() {
725 <        Noop r = new Noop();
726 <        ThreadExecutor exec = new ThreadExecutor();
727 <        CompletableFuture<Void> f = CompletableFuture.runAsync(r, exec);
728 <        assertNull(f.join());
729 <        assertTrue(r.ran);
730 <        checkCompletedNormally(f, null);
731 <        assertEquals(1, exec.count.get());
732 <    }
733 <
734 <    /**
735 <     * failing runAsync completes exceptionally after running Runnable
736 <     */
737 <    public void testRunAsync3() {
738 <        FailingNoop r = new FailingNoop();
739 <        CompletableFuture<Void> f = CompletableFuture.runAsync(r);
740 <        checkCompletedWithWrappedCFException(f);
741 <        assertTrue(r.ran);
742 <    }
743 <
744 <    /**
745 <     * supplyAsync completes with result of supplier
746 <     */
747 <    public void testSupplyAsync() {
748 <        CompletableFuture<Integer> f;
749 <        f = CompletableFuture.supplyAsync(supplyOne);
750 <        assertEquals(f.join(), one);
751 <        checkCompletedNormally(f, one);
752 <    }
753 <
754 <    /**
755 <     * supplyAsync with executor completes with result of supplier
756 <     */
757 <    public void testSupplyAsync2() {
758 <        CompletableFuture<Integer> f;
759 <        f = CompletableFuture.supplyAsync(supplyOne, new ThreadExecutor());
760 <        assertEquals(f.join(), one);
761 <        checkCompletedNormally(f, one);
762 <    }
763 <
764 <    /**
765 <     * Failing supplyAsync completes exceptionally
766 <     */
767 <    public void testSupplyAsync3() {
768 <        FailingSupplier r = new FailingSupplier();
769 <        CompletableFuture<Integer> f = CompletableFuture.supplyAsync(r);
770 <        checkCompletedWithWrappedCFException(f);
771 <        assertTrue(r.ran);
772 <    }
773 <
774 <    // seq completion methods
775 <
776 <    /**
777 <     * thenRun result completes normally after normal completion of source
778 <     */
779 <    public void testThenRun() {
780 <        CompletableFuture<Integer> f;
781 <        CompletableFuture<Void> g;
782 <        Noop r;
783 <
784 <        f = new CompletableFuture<>();
785 <        g = f.thenRun(r = new Noop());
786 <        f.complete(null);
787 <        checkCompletedNormally(g, null);
788 <        assertTrue(r.ran);
789 <
790 <        f = new CompletableFuture<>();
791 <        f.complete(null);
792 <        g = f.thenRun(r = new Noop());
793 <        checkCompletedNormally(g, null);
794 <        assertTrue(r.ran);
795 <    }
796 <
797 <    /**
798 <     * thenRun result completes exceptionally after exceptional
799 <     * completion of source
800 <     */
801 <    public void testThenRun2() {
802 <        CompletableFuture<Integer> f;
803 <        CompletableFuture<Void> g;
804 <        Noop r;
805 <
806 <        f = new CompletableFuture<>();
807 <        g = f.thenRun(r = new Noop());
808 <        f.completeExceptionally(new CFException());
809 <        checkCompletedWithWrappedCFException(g);
810 <        assertFalse(r.ran);
811 <
812 <        f = new CompletableFuture<>();
813 <        f.completeExceptionally(new CFException());
814 <        g = f.thenRun(r = new Noop());
815 <        checkCompletedWithWrappedCFException(g);
816 <        assertFalse(r.ran);
894 >             CompletionStage<? extends T> g,
895 >             Function<? super T,U> a);
896      }
897  
898      /**
899 <     * thenRun result completes exceptionally if action does
899 >     * exceptionally action is not invoked when source completes
900 >     * normally, and source result is propagated
901       */
902 <    public void testThenRun3() {
903 <        CompletableFuture<Integer> f;
904 <        CompletableFuture<Void> g;
905 <        FailingNoop r;
906 <
907 <        f = new CompletableFuture<>();
908 <        g = f.thenRun(r = new FailingNoop());
909 <        f.complete(null);
910 <        checkCompletedWithWrappedCFException(g);
902 >    public void testExceptionally_normalCompletion() {
903 >        for (boolean createIncomplete : new boolean[] { true, false })
904 >        for (Integer v1 : new Integer[] { 1, null })
905 >    {
906 >        final AtomicInteger a = new AtomicInteger(0);
907 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
908 >        if (!createIncomplete) assertTrue(f.complete(v1));
909 >        final CompletableFuture<Integer> g = f.exceptionally
910 >            ((Throwable t) -> {
911 >                // Should not be called
912 >                a.getAndIncrement();
913 >                throw new AssertionError();
914 >            });
915 >        if (createIncomplete) assertTrue(f.complete(v1));
916  
917 <        f = new CompletableFuture<>();
918 <        f.complete(null);
919 <        g = f.thenRun(r = new FailingNoop());
920 <        checkCompletedWithWrappedCFException(g);
836 <    }
917 >        checkCompletedNormally(g, v1);
918 >        checkCompletedNormally(f, v1);
919 >        assertEquals(0, a.get());
920 >    }}
921  
922      /**
923 <     * thenRun result completes exceptionally if source cancelled
923 >     * exceptionally action completes with function value on source
924 >     * exception
925       */
926 <    public void testThenRun4() {
927 <        CompletableFuture<Integer> f;
928 <        CompletableFuture<Void> g;
929 <        Noop r;
930 <
931 <        f = new CompletableFuture<>();
932 <        g = f.thenRun(r = new Noop());
933 <        assertTrue(f.cancel(true));
934 <        checkCompletedWithWrappedCancellationException(g);
926 >    public void testExceptionally_exceptionalCompletion() {
927 >        for (boolean createIncomplete : new boolean[] { true, false })
928 >        for (Integer v1 : new Integer[] { 1, null })
929 >    {
930 >        final AtomicInteger a = new AtomicInteger(0);
931 >        final CFException ex = new CFException();
932 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
933 >        if (!createIncomplete) f.completeExceptionally(ex);
934 >        final CompletableFuture<Integer> g = f.exceptionally
935 >            ((Throwable t) -> {
936 >                ExecutionMode.SYNC.checkExecutionMode();
937 >                threadAssertSame(t, ex);
938 >                a.getAndIncrement();
939 >                return v1;
940 >            });
941 >        if (createIncomplete) f.completeExceptionally(ex);
942  
943 <        f = new CompletableFuture<>();
944 <        assertTrue(f.cancel(true));
945 <        g = f.thenRun(r = new Noop());
854 <        checkCompletedWithWrappedCancellationException(g);
855 <    }
943 >        checkCompletedNormally(g, v1);
944 >        assertEquals(1, a.get());
945 >    }}
946  
947 <    /**
948 <     * thenApply result completes normally after normal completion of source
949 <     */
950 <    public void testThenApply() {
951 <        CompletableFuture<Integer> f = new CompletableFuture<>();
952 <        CompletableFuture<Integer> g = f.thenApply(inc);
953 <        f.complete(one);
954 <        checkCompletedNormally(g, two);
955 <    }
947 >    public void testExceptionally_exceptionalCompletionActionFailed() {
948 >        for (boolean createIncomplete : new boolean[] { true, false })
949 >    {
950 >        final AtomicInteger a = new AtomicInteger(0);
951 >        final CFException ex1 = new CFException();
952 >        final CFException ex2 = new CFException();
953 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
954 >        if (!createIncomplete) f.completeExceptionally(ex1);
955 >        final CompletableFuture<Integer> g = f.exceptionally
956 >            ((Throwable t) -> {
957 >                ExecutionMode.SYNC.checkExecutionMode();
958 >                threadAssertSame(t, ex1);
959 >                a.getAndIncrement();
960 >                throw ex2;
961 >            });
962 >        if (createIncomplete) f.completeExceptionally(ex1);
963  
964 <    /**
965 <     * thenApply result completes exceptionally after exceptional
966 <     * completion of source
870 <     */
871 <    public void testThenApply2() {
872 <        CompletableFuture<Integer> f = new CompletableFuture<>();
873 <        CompletableFuture<Integer> g = f.thenApply(inc);
874 <        f.completeExceptionally(new CFException());
875 <        checkCompletedWithWrappedCFException(g);
876 <    }
964 >        checkCompletedWithWrappedException(g, ex2);
965 >        assertEquals(1, a.get());
966 >    }}
967  
968      /**
969 <     * thenApply result completes exceptionally if action does
969 >     * whenComplete action executes on normal completion, propagating
970 >     * source result.
971       */
972 <    public void testThenApply3() {
973 <        CompletableFuture<Integer> f = new CompletableFuture<>();
974 <        CompletableFuture<Integer> g = f.thenApply(new FailingFunction());
975 <        f.complete(one);
976 <        checkCompletedWithWrappedCFException(g);
977 <    }
972 >    public void testWhenComplete_normalCompletion1() {
973 >        for (ExecutionMode m : ExecutionMode.values())
974 >        for (boolean createIncomplete : new boolean[] { true, false })
975 >        for (Integer v1 : new Integer[] { 1, null })
976 >    {
977 >        final AtomicInteger a = new AtomicInteger(0);
978 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
979 >        if (!createIncomplete) assertTrue(f.complete(v1));
980 >        final CompletableFuture<Integer> g = m.whenComplete
981 >            (f,
982 >             (Integer x, Throwable t) -> {
983 >                m.checkExecutionMode();
984 >                threadAssertSame(x, v1);
985 >                threadAssertNull(t);
986 >                a.getAndIncrement();
987 >            });
988 >        if (createIncomplete) assertTrue(f.complete(v1));
989  
990 <    /**
991 <     * thenApply result completes exceptionally if source cancelled
992 <     */
993 <    public void testThenApply4() {
892 <        CompletableFuture<Integer> f = new CompletableFuture<>();
893 <        CompletableFuture<Integer> g = f.thenApply(inc);
894 <        assertTrue(f.cancel(true));
895 <        checkCompletedWithWrappedCancellationException(g);
896 <    }
990 >        checkCompletedNormally(g, v1);
991 >        checkCompletedNormally(f, v1);
992 >        assertEquals(1, a.get());
993 >    }}
994  
995      /**
996 <     * thenAccept result completes normally after normal completion of source
996 >     * whenComplete action executes on exceptional completion, propagating
997 >     * source result.
998       */
999 <    public void testThenAccept() {
1000 <        CompletableFuture<Integer> f = new CompletableFuture<>();
1001 <        IncAction r = new IncAction();
1002 <        CompletableFuture<Void> g = f.thenAccept(r);
1003 <        f.complete(one);
1004 <        checkCompletedNormally(g, null);
1005 <        assertEquals(r.value, (Integer) 2);
1006 <    }
999 >    public void testWhenComplete_exceptionalCompletion() {
1000 >        for (ExecutionMode m : ExecutionMode.values())
1001 >        for (boolean createIncomplete : new boolean[] { true, false })
1002 >    {
1003 >        final AtomicInteger a = new AtomicInteger(0);
1004 >        final CFException ex = new CFException();
1005 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1006 >        if (!createIncomplete) f.completeExceptionally(ex);
1007 >        final CompletableFuture<Integer> g = m.whenComplete
1008 >            (f,
1009 >             (Integer x, Throwable t) -> {
1010 >                m.checkExecutionMode();
1011 >                threadAssertNull(x);
1012 >                threadAssertSame(t, ex);
1013 >                a.getAndIncrement();
1014 >            });
1015 >        if (createIncomplete) f.completeExceptionally(ex);
1016  
1017 <    /**
1018 <     * thenAccept result completes exceptionally after exceptional
1019 <     * completion of source
1020 <     */
914 <    public void testThenAccept2() {
915 <        CompletableFuture<Integer> f = new CompletableFuture<>();
916 <        IncAction r = new IncAction();
917 <        CompletableFuture<Void> g = f.thenAccept(r);
918 <        f.completeExceptionally(new CFException());
919 <        checkCompletedWithWrappedCFException(g);
920 <    }
1017 >        checkCompletedWithWrappedException(g, ex);
1018 >        checkCompletedExceptionally(f, ex);
1019 >        assertEquals(1, a.get());
1020 >    }}
1021  
1022      /**
1023 <     * thenAccept result completes exceptionally if action does
1023 >     * whenComplete action executes on cancelled source, propagating
1024 >     * CancellationException.
1025       */
1026 <    public void testThenAccept3() {
1027 <        CompletableFuture<Integer> f = new CompletableFuture<>();
1028 <        FailingConsumer r = new FailingConsumer();
1029 <        CompletableFuture<Void> g = f.thenAccept(r);
1030 <        f.complete(one);
1031 <        checkCompletedWithWrappedCFException(g);
1032 <        assertTrue(r.ran);
1033 <    }
1026 >    public void testWhenComplete_sourceCancelled() {
1027 >        for (ExecutionMode m : ExecutionMode.values())
1028 >        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1029 >        for (boolean createIncomplete : new boolean[] { true, false })
1030 >    {
1031 >        final AtomicInteger a = new AtomicInteger(0);
1032 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1033 >        if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
1034 >        final CompletableFuture<Integer> g = m.whenComplete
1035 >            (f,
1036 >             (Integer x, Throwable t) -> {
1037 >                m.checkExecutionMode();
1038 >                threadAssertNull(x);
1039 >                threadAssertTrue(t instanceof CancellationException);
1040 >                a.getAndIncrement();
1041 >            });
1042 >        if (createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
1043  
934    /**
935     * thenAccept result completes exceptionally if source cancelled
936     */
937    public void testThenAccept4() {
938        CompletableFuture<Integer> f = new CompletableFuture<>();
939        IncAction r = new IncAction();
940        CompletableFuture<Void> g = f.thenAccept(r);
941        assertTrue(f.cancel(true));
1044          checkCompletedWithWrappedCancellationException(g);
1045 <    }
1045 >        checkCancelled(f);
1046 >        assertEquals(1, a.get());
1047 >    }}
1048  
1049      /**
1050 <     * thenCombine result completes normally after normal completion
1051 <     * of sources
1050 >     * If a whenComplete action throws an exception when triggered by
1051 >     * a normal completion, it completes exceptionally
1052       */
1053 <    public void testThenCombine_normalCompletion1() {
1053 >    public void testWhenComplete_actionFailed() {
1054 >        for (boolean createIncomplete : new boolean[] { true, false })
1055          for (ExecutionMode m : ExecutionMode.values())
1056          for (Integer v1 : new Integer[] { 1, null })
1057 <        for (Integer v2 : new Integer[] { 2, null }) {
1058 <
1057 >    {
1058 >        final AtomicInteger a = new AtomicInteger(0);
1059 >        final CFException ex = new CFException();
1060          final CompletableFuture<Integer> f = new CompletableFuture<>();
1061 <        final CompletableFuture<Integer> g = new CompletableFuture<>();
1062 <        final SubtractFunction r = new SubtractFunction();
1063 <        final CompletableFuture<Integer> h = m.thenCombine(f, g, r);
1064 <
1065 <        f.complete(v1);
1066 <        checkIncomplete(h);
1067 <        assertEquals(r.invocationCount, 0);
1068 <        g.complete(v2);
1061 >        if (!createIncomplete) assertTrue(f.complete(v1));
1062 >        final CompletableFuture<Integer> g = m.whenComplete
1063 >            (f,
1064 >             (Integer x, Throwable t) -> {
1065 >                m.checkExecutionMode();
1066 >                threadAssertSame(x, v1);
1067 >                threadAssertNull(t);
1068 >                a.getAndIncrement();
1069 >                throw ex;
1070 >            });
1071 >        if (createIncomplete) assertTrue(f.complete(v1));
1072  
1073 <        checkCompletedNormally(h, subtract(v1, v2));
1073 >        checkCompletedWithWrappedException(g, ex);
1074          checkCompletedNormally(f, v1);
1075 <        checkCompletedNormally(g, v2);
1076 <        assertEquals(r.invocationCount, 1);
968 <        }
969 <    }
1075 >        assertEquals(1, a.get());
1076 >    }}
1077  
1078 <    public void testThenCombine_normalCompletion2() {
1078 >    /**
1079 >     * If a whenComplete action throws an exception when triggered by
1080 >     * a source completion that also throws an exception, the source
1081 >     * exception takes precedence.
1082 >     */
1083 >    public void testWhenComplete_actionFailedSourceFailed() {
1084 >        for (boolean createIncomplete : new boolean[] { true, false })
1085          for (ExecutionMode m : ExecutionMode.values())
1086 <        for (Integer v1 : new Integer[] { 1, null })
1087 <        for (Integer v2 : new Integer[] { 2, null }) {
1088 <
1086 >    {
1087 >        final AtomicInteger a = new AtomicInteger(0);
1088 >        final CFException ex1 = new CFException();
1089 >        final CFException ex2 = new CFException();
1090          final CompletableFuture<Integer> f = new CompletableFuture<>();
977        final CompletableFuture<Integer> g = new CompletableFuture<>();
978        final SubtractFunction r = new SubtractFunction();
979        final CompletableFuture<Integer> h = m.thenCombine(f, g, r);
1091  
1092 <        g.complete(v2);
1093 <        checkIncomplete(h);
1094 <        assertEquals(r.invocationCount, 0);
1095 <        f.complete(v1);
1092 >        if (!createIncomplete) f.completeExceptionally(ex1);
1093 >        final CompletableFuture<Integer> g = m.whenComplete
1094 >            (f,
1095 >             (Integer x, Throwable t) -> {
1096 >                m.checkExecutionMode();
1097 >                threadAssertSame(t, ex1);
1098 >                threadAssertNull(x);
1099 >                a.getAndIncrement();
1100 >                throw ex2;
1101 >            });
1102 >        if (createIncomplete) f.completeExceptionally(ex1);
1103  
1104 <        checkCompletedNormally(h, subtract(v1, v2));
1105 <        checkCompletedNormally(f, v1);
1106 <        checkCompletedNormally(g, v2);
1107 <        assertEquals(r.invocationCount, 1);
990 <        }
991 <    }
1104 >        checkCompletedWithWrappedException(g, ex1);
1105 >        checkCompletedExceptionally(f, ex1);
1106 >        assertEquals(1, a.get());
1107 >    }}
1108  
1109 <    public void testThenCombine_normalCompletion3() {
1109 >    /**
1110 >     * handle action completes normally with function value on normal
1111 >     * completion of source
1112 >     */
1113 >    public void testHandle_normalCompletion() {
1114          for (ExecutionMode m : ExecutionMode.values())
1115 +        for (boolean createIncomplete : new boolean[] { true, false })
1116          for (Integer v1 : new Integer[] { 1, null })
1117 <        for (Integer v2 : new Integer[] { 2, null }) {
997 <
1117 >    {
1118          final CompletableFuture<Integer> f = new CompletableFuture<>();
1119 <        final CompletableFuture<Integer> g = new CompletableFuture<>();
1120 <        final SubtractFunction r = new SubtractFunction();
1121 <
1122 <        g.complete(v2);
1123 <        f.complete(v1);
1124 <        final CompletableFuture<Integer> h = m.thenCombine(f, g, r);
1119 >        final AtomicInteger a = new AtomicInteger(0);
1120 >        if (!createIncomplete) assertTrue(f.complete(v1));
1121 >        final CompletableFuture<Integer> g = m.handle
1122 >            (f,
1123 >             (Integer x, Throwable t) -> {
1124 >                m.checkExecutionMode();
1125 >                threadAssertSame(x, v1);
1126 >                threadAssertNull(t);
1127 >                a.getAndIncrement();
1128 >                return inc(v1);
1129 >            });
1130 >        if (createIncomplete) assertTrue(f.complete(v1));
1131  
1132 <        checkCompletedNormally(h, subtract(v1, v2));
1132 >        checkCompletedNormally(g, inc(v1));
1133          checkCompletedNormally(f, v1);
1134 <        checkCompletedNormally(g, v2);
1135 <        assertEquals(r.invocationCount, 1);
1010 <        }
1011 <    }
1134 >        assertEquals(1, a.get());
1135 >    }}
1136  
1137 <    public void testThenCombine_normalCompletion4() {
1137 >    /**
1138 >     * handle action completes normally with function value on
1139 >     * exceptional completion of source
1140 >     */
1141 >    public void testHandle_exceptionalCompletion() {
1142          for (ExecutionMode m : ExecutionMode.values())
1143 +        for (boolean createIncomplete : new boolean[] { true, false })
1144          for (Integer v1 : new Integer[] { 1, null })
1145 <        for (Integer v2 : new Integer[] { 2, null }) {
1017 <
1145 >    {
1146          final CompletableFuture<Integer> f = new CompletableFuture<>();
1147 <        final CompletableFuture<Integer> g = new CompletableFuture<>();
1148 <        final SubtractFunction r = new SubtractFunction();
1149 <
1150 <        f.complete(v1);
1151 <        g.complete(v2);
1152 <        final CompletableFuture<Integer> h = m.thenCombine(f, g, r);
1147 >        final AtomicInteger a = new AtomicInteger(0);
1148 >        final CFException ex = new CFException();
1149 >        if (!createIncomplete) f.completeExceptionally(ex);
1150 >        final CompletableFuture<Integer> g = m.handle
1151 >            (f,
1152 >             (Integer x, Throwable t) -> {
1153 >                m.checkExecutionMode();
1154 >                threadAssertNull(x);
1155 >                threadAssertSame(t, ex);
1156 >                a.getAndIncrement();
1157 >                return v1;
1158 >            });
1159 >        if (createIncomplete) f.completeExceptionally(ex);
1160  
1161 <        checkCompletedNormally(h, subtract(v1, v2));
1162 <        checkCompletedNormally(f, v1);
1163 <        checkCompletedNormally(g, v2);
1164 <        assertEquals(r.invocationCount, 1);
1030 <        }
1031 <    }
1161 >        checkCompletedNormally(g, v1);
1162 >        checkCompletedExceptionally(f, ex);
1163 >        assertEquals(1, a.get());
1164 >    }}
1165  
1166      /**
1167 <     * thenCombine result completes exceptionally after exceptional
1168 <     * completion of either source
1167 >     * handle action completes normally with function value on
1168 >     * cancelled source
1169       */
1170 <    public void testThenCombine_exceptionalCompletion1() {
1170 >    public void testHandle_sourceCancelled() {
1171          for (ExecutionMode m : ExecutionMode.values())
1172 <        for (Integer v1 : new Integer[] { 1, null }) {
1173 <
1172 >        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1173 >        for (boolean createIncomplete : new boolean[] { true, false })
1174 >        for (Integer v1 : new Integer[] { 1, null })
1175 >    {
1176          final CompletableFuture<Integer> f = new CompletableFuture<>();
1177 <        final CompletableFuture<Integer> g = new CompletableFuture<>();
1178 <        final SubtractFunction r = new SubtractFunction();
1179 <        final CompletableFuture<Integer> h = m.thenCombine(f, g, r);
1180 <        final CFException ex = new CFException();
1181 <
1182 <        f.completeExceptionally(ex);
1183 <        checkIncomplete(h);
1184 <        g.complete(v1);
1177 >        final AtomicInteger a = new AtomicInteger(0);
1178 >        if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
1179 >        final CompletableFuture<Integer> g = m.handle
1180 >            (f,
1181 >             (Integer x, Throwable t) -> {
1182 >                m.checkExecutionMode();
1183 >                threadAssertNull(x);
1184 >                threadAssertTrue(t instanceof CancellationException);
1185 >                a.getAndIncrement();
1186 >                return v1;
1187 >            });
1188 >        if (createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
1189  
1051        checkCompletedWithWrappedCFException(h, ex);
1052        checkCompletedWithWrappedCFException(f, ex);
1053        assertEquals(r.invocationCount, 0);
1190          checkCompletedNormally(g, v1);
1191 <        }
1192 <    }
1191 >        checkCancelled(f);
1192 >        assertEquals(1, a.get());
1193 >    }}
1194  
1195 <    public void testThenCombine_exceptionalCompletion2() {
1195 >    /**
1196 >     * handle result completes exceptionally if action does
1197 >     */
1198 >    public void testHandle_sourceFailedActionFailed() {
1199          for (ExecutionMode m : ExecutionMode.values())
1200 <        for (Integer v1 : new Integer[] { 1, null }) {
1201 <
1200 >        for (boolean createIncomplete : new boolean[] { true, false })
1201 >    {
1202          final CompletableFuture<Integer> f = new CompletableFuture<>();
1203 <        final CompletableFuture<Integer> g = new CompletableFuture<>();
1204 <        final SubtractFunction r = new SubtractFunction();
1205 <        final CompletableFuture<Integer> h = m.thenCombine(f, g, r);
1206 <        final CFException ex = new CFException();
1207 <
1208 <        g.completeExceptionally(ex);
1209 <        checkIncomplete(h);
1210 <        f.complete(v1);
1203 >        final AtomicInteger a = new AtomicInteger(0);
1204 >        final CFException ex1 = new CFException();
1205 >        final CFException ex2 = new CFException();
1206 >        if (!createIncomplete) f.completeExceptionally(ex1);
1207 >        final CompletableFuture<Integer> g = m.handle
1208 >            (f,
1209 >             (Integer x, Throwable t) -> {
1210 >                m.checkExecutionMode();
1211 >                threadAssertNull(x);
1212 >                threadAssertSame(ex1, t);
1213 >                a.getAndIncrement();
1214 >                throw ex2;
1215 >            });
1216 >        if (createIncomplete) f.completeExceptionally(ex1);
1217  
1218 <        checkCompletedWithWrappedCFException(h, ex);
1219 <        checkCompletedWithWrappedCFException(g, ex);
1220 <        assertEquals(r.invocationCount, 0);
1221 <        checkCompletedNormally(f, v1);
1076 <        }
1077 <    }
1218 >        checkCompletedWithWrappedException(g, ex2);
1219 >        checkCompletedExceptionally(f, ex1);
1220 >        assertEquals(1, a.get());
1221 >    }}
1222  
1223 <    public void testThenCombine_exceptionalCompletion3() {
1223 >    public void testHandle_sourceCompletedNormallyActionFailed() {
1224          for (ExecutionMode m : ExecutionMode.values())
1225 <        for (Integer v1 : new Integer[] { 1, null }) {
1226 <
1225 >        for (boolean createIncomplete : new boolean[] { true, false })
1226 >        for (Integer v1 : new Integer[] { 1, null })
1227 >    {
1228          final CompletableFuture<Integer> f = new CompletableFuture<>();
1229 <        final CompletableFuture<Integer> g = new CompletableFuture<>();
1085 <        final SubtractFunction r = new SubtractFunction();
1229 >        final AtomicInteger a = new AtomicInteger(0);
1230          final CFException ex = new CFException();
1231 +        if (!createIncomplete) assertTrue(f.complete(v1));
1232 +        final CompletableFuture<Integer> g = m.handle
1233 +            (f,
1234 +             (Integer x, Throwable t) -> {
1235 +                m.checkExecutionMode();
1236 +                threadAssertSame(x, v1);
1237 +                threadAssertNull(t);
1238 +                a.getAndIncrement();
1239 +                throw ex;
1240 +            });
1241 +        if (createIncomplete) assertTrue(f.complete(v1));
1242  
1243 <        g.completeExceptionally(ex);
1089 <        f.complete(v1);
1090 <        final CompletableFuture<Integer> h = m.thenCombine(f, g, r);
1091 <
1092 <        checkCompletedWithWrappedCFException(h, ex);
1093 <        checkCompletedWithWrappedCFException(g, ex);
1094 <        assertEquals(r.invocationCount, 0);
1243 >        checkCompletedWithWrappedException(g, ex);
1244          checkCompletedNormally(f, v1);
1245 <        }
1246 <    }
1098 <
1099 <    public void testThenCombine_exceptionalCompletion4() {
1100 <        for (ExecutionMode m : ExecutionMode.values())
1101 <        for (Integer v1 : new Integer[] { 1, null }) {
1102 <
1103 <        final CompletableFuture<Integer> f = new CompletableFuture<>();
1104 <        final CompletableFuture<Integer> g = new CompletableFuture<>();
1105 <        final SubtractFunction r = new SubtractFunction();
1106 <        final CFException ex = new CFException();
1107 <
1108 <        f.completeExceptionally(ex);
1109 <        g.complete(v1);
1110 <        final CompletableFuture<Integer> h = m.thenCombine(f, g, r);
1111 <
1112 <        checkCompletedWithWrappedCFException(h, ex);
1113 <        checkCompletedWithWrappedCFException(f, ex);
1114 <        assertEquals(r.invocationCount, 0);
1115 <        checkCompletedNormally(g, v1);
1116 <        }
1117 <    }
1245 >        assertEquals(1, a.get());
1246 >    }}
1247  
1248      /**
1249 <     * thenCombine result completes exceptionally if action does
1249 >     * runAsync completes after running Runnable
1250       */
1251 <    public void testThenCombine_actionFailed1() {
1252 <        for (ExecutionMode m : ExecutionMode.values())
1253 <        for (Integer v1 : new Integer[] { 1, null })
1254 <        for (Integer v2 : new Integer[] { 2, null }) {
1255 <
1256 <        final CompletableFuture<Integer> f = new CompletableFuture<>();
1257 <        final CompletableFuture<Integer> g = new CompletableFuture<>();
1258 <        final FailingBiFunction r = new FailingBiFunction();
1259 <        final CompletableFuture<Integer> h = m.thenCombine(f, g, r);
1260 <
1261 <        f.complete(v1);
1262 <        checkIncomplete(h);
1263 <        g.complete(v2);
1251 >    public void testRunAsync_normalCompletion() {
1252 >        ExecutionMode[] executionModes = {
1253 >            ExecutionMode.ASYNC,
1254 >            ExecutionMode.EXECUTOR,
1255 >        };
1256 >        for (ExecutionMode m : executionModes)
1257 >    {
1258 >        final Noop r = new Noop(m);
1259 >        final CompletableFuture<Void> f = m.runAsync(r);
1260 >        assertNull(f.join());
1261 >        checkCompletedNormally(f, null);
1262 >        r.assertInvoked();
1263 >    }}
1264  
1265 <        checkCompletedWithWrappedCFException(h);
1266 <        checkCompletedNormally(f, v1);
1267 <        checkCompletedNormally(g, v2);
1268 <        }
1269 <    }
1265 >    /**
1266 >     * failing runAsync completes exceptionally after running Runnable
1267 >     */
1268 >    public void testRunAsync_exceptionalCompletion() {
1269 >        ExecutionMode[] executionModes = {
1270 >            ExecutionMode.ASYNC,
1271 >            ExecutionMode.EXECUTOR,
1272 >        };
1273 >        for (ExecutionMode m : executionModes)
1274 >    {
1275 >        final FailingRunnable r = new FailingRunnable(m);
1276 >        final CompletableFuture<Void> f = m.runAsync(r);
1277 >        checkCompletedWithWrappedCFException(f);
1278 >        r.assertInvoked();
1279 >    }}
1280  
1281 <    public void testThenCombine_actionFailed2() {
1282 <        for (ExecutionMode m : ExecutionMode.values())
1281 >    /**
1282 >     * supplyAsync completes with result of supplier
1283 >     */
1284 >    public void testSupplyAsync_normalCompletion() {
1285 >        ExecutionMode[] executionModes = {
1286 >            ExecutionMode.ASYNC,
1287 >            ExecutionMode.EXECUTOR,
1288 >        };
1289 >        for (ExecutionMode m : executionModes)
1290          for (Integer v1 : new Integer[] { 1, null })
1291 <        for (Integer v2 : new Integer[] { 2, null }) {
1292 <
1293 <        final CompletableFuture<Integer> f = new CompletableFuture<>();
1294 <        final CompletableFuture<Integer> g = new CompletableFuture<>();
1149 <        final FailingBiFunction r = new FailingBiFunction();
1150 <        final CompletableFuture<Integer> h = m.thenCombine(f, g, r);
1151 <
1152 <        g.complete(v2);
1153 <        checkIncomplete(h);
1154 <        f.complete(v1);
1155 <
1156 <        checkCompletedWithWrappedCFException(h);
1291 >    {
1292 >        final IntegerSupplier r = new IntegerSupplier(m, v1);
1293 >        final CompletableFuture<Integer> f = m.supplyAsync(r);
1294 >        assertSame(v1, f.join());
1295          checkCompletedNormally(f, v1);
1296 <        checkCompletedNormally(g, v2);
1297 <        }
1160 <    }
1296 >        r.assertInvoked();
1297 >    }}
1298  
1299      /**
1300 <     * thenCombine result completes exceptionally if either source cancelled
1300 >     * Failing supplyAsync completes exceptionally
1301       */
1302 <    public void testThenCombine_sourceCancelled1() {
1303 <        for (ExecutionMode m : ExecutionMode.values())
1304 <        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1305 <        for (Integer v1 : new Integer[] { 1, null }) {
1306 <
1307 <        final CompletableFuture<Integer> f = new CompletableFuture<>();
1308 <        final CompletableFuture<Integer> g = new CompletableFuture<>();
1309 <        final SubtractFunction r = new SubtractFunction();
1310 <        final CompletableFuture<Integer> h = m.thenCombine(f, g, r);
1311 <
1312 <        assertTrue(f.cancel(mayInterruptIfRunning));
1313 <        checkIncomplete(h);
1177 <        g.complete(v1);
1302 >    public void testSupplyAsync_exceptionalCompletion() {
1303 >        ExecutionMode[] executionModes = {
1304 >            ExecutionMode.ASYNC,
1305 >            ExecutionMode.EXECUTOR,
1306 >        };
1307 >        for (ExecutionMode m : executionModes)
1308 >    {
1309 >        FailingSupplier r = new FailingSupplier(m);
1310 >        CompletableFuture<Integer> f = m.supplyAsync(r);
1311 >        checkCompletedWithWrappedCFException(f);
1312 >        r.assertInvoked();
1313 >    }}
1314  
1315 <        checkCompletedWithWrappedCancellationException(h);
1180 <        checkCancelled(f);
1181 <        assertEquals(r.invocationCount, 0);
1182 <        checkCompletedNormally(g, v1);
1183 <        }
1184 <    }
1315 >    // seq completion methods
1316  
1317 <    public void testThenCombine_sourceCancelled2() {
1317 >    /**
1318 >     * thenRun result completes normally after normal completion of source
1319 >     */
1320 >    public void testThenRun_normalCompletion() {
1321          for (ExecutionMode m : ExecutionMode.values())
1322 <        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1323 <        for (Integer v1 : new Integer[] { 1, null }) {
1190 <
1322 >        for (Integer v1 : new Integer[] { 1, null })
1323 >    {
1324          final CompletableFuture<Integer> f = new CompletableFuture<>();
1325 <        final CompletableFuture<Integer> g = new CompletableFuture<>();
1326 <        final SubtractFunction r = new SubtractFunction();
1194 <        final CompletableFuture<Integer> h = m.thenCombine(f, g, r);
1195 <
1196 <        assertTrue(g.cancel(mayInterruptIfRunning));
1197 <        checkIncomplete(h);
1198 <        f.complete(v1);
1325 >        final Noop[] rs = new Noop[6];
1326 >        for (int i = 0; i < rs.length; i++) rs[i] = new Noop(m);
1327  
1328 <        checkCompletedWithWrappedCancellationException(h);
1329 <        checkCancelled(g);
1330 <        assertEquals(r.invocationCount, 0);
1328 >        final CompletableFuture<Void> h0 = m.thenRun(f, rs[0]);
1329 >        final CompletableFuture<Void> h1 = m.runAfterBoth(f, f, rs[1]);
1330 >        final CompletableFuture<Void> h2 = m.runAfterEither(f, f, rs[2]);
1331 >        checkIncomplete(h0);
1332 >        checkIncomplete(h1);
1333 >        checkIncomplete(h2);
1334 >        assertTrue(f.complete(v1));
1335 >        final CompletableFuture<Void> h3 = m.thenRun(f, rs[3]);
1336 >        final CompletableFuture<Void> h4 = m.runAfterBoth(f, f, rs[4]);
1337 >        final CompletableFuture<Void> h5 = m.runAfterEither(f, f, rs[5]);
1338 >
1339 >        checkCompletedNormally(h0, null);
1340 >        checkCompletedNormally(h1, null);
1341 >        checkCompletedNormally(h2, null);
1342 >        checkCompletedNormally(h3, null);
1343 >        checkCompletedNormally(h4, null);
1344 >        checkCompletedNormally(h5, null);
1345          checkCompletedNormally(f, v1);
1346 <        }
1347 <    }
1346 >        for (Noop r : rs) r.assertInvoked();
1347 >    }}
1348  
1349 <    public void testThenCombine_sourceCancelled3() {
1349 >    /**
1350 >     * thenRun result completes exceptionally after exceptional
1351 >     * completion of source
1352 >     */
1353 >    public void testThenRun_exceptionalCompletion() {
1354          for (ExecutionMode m : ExecutionMode.values())
1355 <        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1356 <        for (Integer v1 : new Integer[] { 1, null }) {
1211 <
1355 >    {
1356 >        final CFException ex = new CFException();
1357          final CompletableFuture<Integer> f = new CompletableFuture<>();
1358 <        final CompletableFuture<Integer> g = new CompletableFuture<>();
1359 <        final SubtractFunction r = new SubtractFunction();
1215 <
1216 <        assertTrue(g.cancel(mayInterruptIfRunning));
1217 <        f.complete(v1);
1218 <        final CompletableFuture<Integer> h = m.thenCombine(f, g, r);
1358 >        final Noop[] rs = new Noop[6];
1359 >        for (int i = 0; i < rs.length; i++) rs[i] = new Noop(m);
1360  
1361 <        checkCompletedWithWrappedCancellationException(h);
1362 <        checkCancelled(g);
1363 <        assertEquals(r.invocationCount, 0);
1364 <        checkCompletedNormally(f, v1);
1365 <        }
1366 <    }
1361 >        final CompletableFuture<Void> h0 = m.thenRun(f, rs[0]);
1362 >        final CompletableFuture<Void> h1 = m.runAfterBoth(f, f, rs[1]);
1363 >        final CompletableFuture<Void> h2 = m.runAfterEither(f, f, rs[2]);
1364 >        checkIncomplete(h0);
1365 >        checkIncomplete(h1);
1366 >        checkIncomplete(h2);
1367 >        assertTrue(f.completeExceptionally(ex));
1368 >        final CompletableFuture<Void> h3 = m.thenRun(f, rs[3]);
1369 >        final CompletableFuture<Void> h4 = m.runAfterBoth(f, f, rs[4]);
1370 >        final CompletableFuture<Void> h5 = m.runAfterEither(f, f, rs[5]);
1371 >
1372 >        checkCompletedWithWrappedException(h0, ex);
1373 >        checkCompletedWithWrappedException(h1, ex);
1374 >        checkCompletedWithWrappedException(h2, ex);
1375 >        checkCompletedWithWrappedException(h3, ex);
1376 >        checkCompletedWithWrappedException(h4, ex);
1377 >        checkCompletedWithWrappedException(h5, ex);
1378 >        checkCompletedExceptionally(f, ex);
1379 >        for (Noop r : rs) r.assertNotInvoked();
1380 >    }}
1381  
1382 <    public void testThenCombine_sourceCancelled4() {
1382 >    /**
1383 >     * thenRun result completes exceptionally if source cancelled
1384 >     */
1385 >    public void testThenRun_sourceCancelled() {
1386          for (ExecutionMode m : ExecutionMode.values())
1387          for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1388 <        for (Integer v1 : new Integer[] { 1, null }) {
1231 <
1388 >    {
1389          final CompletableFuture<Integer> f = new CompletableFuture<>();
1390 <        final CompletableFuture<Integer> g = new CompletableFuture<>();
1391 <        final SubtractFunction r = new SubtractFunction();
1390 >        final Noop[] rs = new Noop[6];
1391 >        for (int i = 0; i < rs.length; i++) rs[i] = new Noop(m);
1392  
1393 +        final CompletableFuture<Void> h0 = m.thenRun(f, rs[0]);
1394 +        final CompletableFuture<Void> h1 = m.runAfterBoth(f, f, rs[1]);
1395 +        final CompletableFuture<Void> h2 = m.runAfterEither(f, f, rs[2]);
1396 +        checkIncomplete(h0);
1397 +        checkIncomplete(h1);
1398 +        checkIncomplete(h2);
1399          assertTrue(f.cancel(mayInterruptIfRunning));
1400 <        g.complete(v1);
1401 <        final CompletableFuture<Integer> h = m.thenCombine(f, g, r);
1402 <
1403 <        checkCompletedWithWrappedCancellationException(h);
1400 >        final CompletableFuture<Void> h3 = m.thenRun(f, rs[3]);
1401 >        final CompletableFuture<Void> h4 = m.runAfterBoth(f, f, rs[4]);
1402 >        final CompletableFuture<Void> h5 = m.runAfterEither(f, f, rs[5]);
1403 >
1404 >        checkCompletedWithWrappedCancellationException(h0);
1405 >        checkCompletedWithWrappedCancellationException(h1);
1406 >        checkCompletedWithWrappedCancellationException(h2);
1407 >        checkCompletedWithWrappedCancellationException(h3);
1408 >        checkCompletedWithWrappedCancellationException(h4);
1409 >        checkCompletedWithWrappedCancellationException(h5);
1410          checkCancelled(f);
1411 <        assertEquals(r.invocationCount, 0);
1412 <        checkCompletedNormally(g, v1);
1244 <        }
1245 <    }
1411 >        for (Noop r : rs) r.assertNotInvoked();
1412 >    }}
1413  
1414      /**
1415 <     * thenAcceptBoth result completes normally after normal
1249 <     * completion of sources
1415 >     * thenRun result completes exceptionally if action does
1416       */
1417 <    public void testThenAcceptBoth_normalCompletion1() {
1252 <        for (ExecutionMode m : ExecutionMode.values())
1253 <        for (Integer v1 : new Integer[] { 1, null })
1254 <        for (Integer v2 : new Integer[] { 2, null }) {
1255 <
1256 <        final CompletableFuture<Integer> f = new CompletableFuture<>();
1257 <        final CompletableFuture<Integer> g = new CompletableFuture<>();
1258 <        final SubtractAction r = new SubtractAction();
1259 <        final CompletableFuture<Void> h = m.thenAcceptBoth(f, g, r);
1260 <
1261 <        f.complete(v1);
1262 <        checkIncomplete(h);
1263 <        assertFalse(r.ran());
1264 <        g.complete(v2);
1265 <
1266 <        checkCompletedNormally(h, null);
1267 <        assertEquals(r.value, subtract(v1, v2));
1268 <        checkCompletedNormally(f, v1);
1269 <        checkCompletedNormally(g, v2);
1270 <        }
1271 <    }
1272 <
1273 <    public void testThenAcceptBoth_normalCompletion2() {
1274 <        for (ExecutionMode m : ExecutionMode.values())
1275 <        for (Integer v1 : new Integer[] { 1, null })
1276 <        for (Integer v2 : new Integer[] { 2, null }) {
1277 <
1278 <        final CompletableFuture<Integer> f = new CompletableFuture<>();
1279 <        final CompletableFuture<Integer> g = new CompletableFuture<>();
1280 <        final SubtractAction r = new SubtractAction();
1281 <        final CompletableFuture<Void> h = m.thenAcceptBoth(f, g, r);
1282 <
1283 <        g.complete(v2);
1284 <        checkIncomplete(h);
1285 <        assertFalse(r.ran());
1286 <        f.complete(v1);
1287 <
1288 <        checkCompletedNormally(h, null);
1289 <        assertEquals(r.value, subtract(v1, v2));
1290 <        checkCompletedNormally(f, v1);
1291 <        checkCompletedNormally(g, v2);
1292 <        }
1293 <    }
1294 <
1295 <    public void testThenAcceptBoth_normalCompletion3() {
1417 >    public void testThenRun_actionFailed() {
1418          for (ExecutionMode m : ExecutionMode.values())
1419          for (Integer v1 : new Integer[] { 1, null })
1420 <        for (Integer v2 : new Integer[] { 2, null }) {
1299 <
1420 >    {
1421          final CompletableFuture<Integer> f = new CompletableFuture<>();
1422 <        final CompletableFuture<Integer> g = new CompletableFuture<>();
1423 <        final SubtractAction r = new SubtractAction();
1303 <
1304 <        g.complete(v2);
1305 <        f.complete(v1);
1306 <        final CompletableFuture<Void> h = m.thenAcceptBoth(f, g, r);
1422 >        final FailingRunnable[] rs = new FailingRunnable[6];
1423 >        for (int i = 0; i < rs.length; i++) rs[i] = new FailingRunnable(m);
1424  
1425 <        checkCompletedNormally(h, null);
1426 <        assertEquals(r.value, subtract(v1, v2));
1425 >        final CompletableFuture<Void> h0 = m.thenRun(f, rs[0]);
1426 >        final CompletableFuture<Void> h1 = m.runAfterBoth(f, f, rs[1]);
1427 >        final CompletableFuture<Void> h2 = m.runAfterEither(f, f, rs[2]);
1428 >        assertTrue(f.complete(v1));
1429 >        final CompletableFuture<Void> h3 = m.thenRun(f, rs[3]);
1430 >        final CompletableFuture<Void> h4 = m.runAfterBoth(f, f, rs[4]);
1431 >        final CompletableFuture<Void> h5 = m.runAfterEither(f, f, rs[5]);
1432 >
1433 >        checkCompletedWithWrappedCFException(h0);
1434 >        checkCompletedWithWrappedCFException(h1);
1435 >        checkCompletedWithWrappedCFException(h2);
1436 >        checkCompletedWithWrappedCFException(h3);
1437 >        checkCompletedWithWrappedCFException(h4);
1438 >        checkCompletedWithWrappedCFException(h5);
1439          checkCompletedNormally(f, v1);
1440 <        checkCompletedNormally(g, v2);
1312 <        }
1313 <    }
1440 >    }}
1441  
1442 <    public void testThenAcceptBoth_normalCompletion4() {
1442 >    /**
1443 >     * thenApply result completes normally after normal completion of source
1444 >     */
1445 >    public void testThenApply_normalCompletion() {
1446          for (ExecutionMode m : ExecutionMode.values())
1447          for (Integer v1 : new Integer[] { 1, null })
1448 <        for (Integer v2 : new Integer[] { 2, null }) {
1319 <
1448 >    {
1449          final CompletableFuture<Integer> f = new CompletableFuture<>();
1450 <        final CompletableFuture<Integer> g = new CompletableFuture<>();
1451 <        final SubtractAction r = new SubtractAction();
1450 >        final IncFunction[] rs = new IncFunction[4];
1451 >        for (int i = 0; i < rs.length; i++) rs[i] = new IncFunction(m);
1452  
1453 <        f.complete(v1);
1454 <        g.complete(v2);
1455 <        final CompletableFuture<Void> h = m.thenAcceptBoth(f, g, r);
1453 >        final CompletableFuture<Integer> h0 = m.thenApply(f, rs[0]);
1454 >        final CompletableFuture<Integer> h1 = m.applyToEither(f, f, rs[1]);
1455 >        checkIncomplete(h0);
1456 >        checkIncomplete(h1);
1457 >        assertTrue(f.complete(v1));
1458 >        final CompletableFuture<Integer> h2 = m.thenApply(f, rs[2]);
1459 >        final CompletableFuture<Integer> h3 = m.applyToEither(f, f, rs[3]);
1460  
1461 <        checkCompletedNormally(h, null);
1462 <        assertEquals(r.value, subtract(v1, v2));
1461 >        checkCompletedNormally(h0, inc(v1));
1462 >        checkCompletedNormally(h1, inc(v1));
1463 >        checkCompletedNormally(h2, inc(v1));
1464 >        checkCompletedNormally(h3, inc(v1));
1465          checkCompletedNormally(f, v1);
1466 <        checkCompletedNormally(g, v2);
1467 <        }
1333 <    }
1466 >        for (IncFunction r : rs) r.assertValue(inc(v1));
1467 >    }}
1468  
1469      /**
1470 <     * thenAcceptBoth result completes exceptionally after exceptional
1471 <     * completion of either source
1470 >     * thenApply result completes exceptionally after exceptional
1471 >     * completion of source
1472       */
1473 <    public void testThenAcceptBoth_exceptionalCompletion1() {
1473 >    public void testThenApply_exceptionalCompletion() {
1474          for (ExecutionMode m : ExecutionMode.values())
1475 <        for (Integer v1 : new Integer[] { 1, null }) {
1342 <
1343 <        final CompletableFuture<Integer> f = new CompletableFuture<>();
1344 <        final CompletableFuture<Integer> g = new CompletableFuture<>();
1345 <        final SubtractAction r = new SubtractAction();
1346 <        final CompletableFuture<Void> h = m.thenAcceptBoth(f, g, r);
1475 >    {
1476          final CFException ex = new CFException();
1348
1349        f.completeExceptionally(ex);
1350        checkIncomplete(h);
1351        g.complete(v1);
1352
1353        checkCompletedWithWrappedCFException(h, ex);
1354        checkCompletedWithWrappedCFException(f, ex);
1355        assertEquals(r.invocationCount, 0);
1356        checkCompletedNormally(g, v1);
1357        }
1358    }
1359
1360    public void testThenAcceptBoth_exceptionalCompletion2() {
1361        for (ExecutionMode m : ExecutionMode.values())
1362        for (Integer v1 : new Integer[] { 1, null }) {
1363
1477          final CompletableFuture<Integer> f = new CompletableFuture<>();
1478 <        final CompletableFuture<Integer> g = new CompletableFuture<>();
1479 <        final SubtractAction r = new SubtractAction();
1367 <        final CompletableFuture<Void> h = m.thenAcceptBoth(f, g, r);
1368 <        final CFException ex = new CFException();
1369 <
1370 <        g.completeExceptionally(ex);
1371 <        checkIncomplete(h);
1372 <        f.complete(v1);
1478 >        final IncFunction[] rs = new IncFunction[4];
1479 >        for (int i = 0; i < rs.length; i++) rs[i] = new IncFunction(m);
1480  
1481 <        checkCompletedWithWrappedCFException(h, ex);
1482 <        checkCompletedWithWrappedCFException(g, ex);
1483 <        assertEquals(r.invocationCount, 0);
1484 <        checkCompletedNormally(f, v1);
1485 <        }
1486 <    }
1481 >        final CompletableFuture<Integer> h0 = m.thenApply(f, rs[0]);
1482 >        final CompletableFuture<Integer> h1 = m.applyToEither(f, f, rs[1]);
1483 >        assertTrue(f.completeExceptionally(ex));
1484 >        final CompletableFuture<Integer> h2 = m.thenApply(f, rs[2]);
1485 >        final CompletableFuture<Integer> h3 = m.applyToEither(f, f, rs[3]);
1486 >
1487 >        checkCompletedWithWrappedException(h0, ex);
1488 >        checkCompletedWithWrappedException(h1, ex);
1489 >        checkCompletedWithWrappedException(h2, ex);
1490 >        checkCompletedWithWrappedException(h3, ex);
1491 >        checkCompletedExceptionally(f, ex);
1492 >        for (IncFunction r : rs) r.assertNotInvoked();
1493 >    }}
1494  
1495 <    public void testThenAcceptBoth_exceptionalCompletion3() {
1495 >    /**
1496 >     * thenApply result completes exceptionally if source cancelled
1497 >     */
1498 >    public void testThenApply_sourceCancelled() {
1499          for (ExecutionMode m : ExecutionMode.values())
1500 <        for (Integer v1 : new Integer[] { 1, null }) {
1501 <
1500 >        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1501 >    {
1502          final CompletableFuture<Integer> f = new CompletableFuture<>();
1503 <        final CompletableFuture<Integer> g = new CompletableFuture<>();
1504 <        final SubtractAction r = new SubtractAction();
1388 <        final CFException ex = new CFException();
1503 >        final IncFunction[] rs = new IncFunction[4];
1504 >        for (int i = 0; i < rs.length; i++) rs[i] = new IncFunction(m);
1505  
1506 <        g.completeExceptionally(ex);
1507 <        f.complete(v1);
1508 <        final CompletableFuture<Void> h = m.thenAcceptBoth(f, g, r);
1506 >        final CompletableFuture<Integer> h0 = m.thenApply(f, rs[0]);
1507 >        final CompletableFuture<Integer> h1 = m.applyToEither(f, f, rs[1]);
1508 >        assertTrue(f.cancel(mayInterruptIfRunning));
1509 >        final CompletableFuture<Integer> h2 = m.thenApply(f, rs[2]);
1510 >        final CompletableFuture<Integer> h3 = m.applyToEither(f, f, rs[3]);
1511  
1512 <        checkCompletedWithWrappedCFException(h, ex);
1513 <        checkCompletedWithWrappedCFException(g, ex);
1514 <        assertEquals(r.invocationCount, 0);
1515 <        checkCompletedNormally(f, v1);
1516 <        }
1517 <    }
1512 >        checkCompletedWithWrappedCancellationException(h0);
1513 >        checkCompletedWithWrappedCancellationException(h1);
1514 >        checkCompletedWithWrappedCancellationException(h2);
1515 >        checkCompletedWithWrappedCancellationException(h3);
1516 >        checkCancelled(f);
1517 >        for (IncFunction r : rs) r.assertNotInvoked();
1518 >    }}
1519  
1520 <    public void testThenAcceptBoth_exceptionalCompletion4() {
1520 >    /**
1521 >     * thenApply result completes exceptionally if action does
1522 >     */
1523 >    public void testThenApply_actionFailed() {
1524          for (ExecutionMode m : ExecutionMode.values())
1525 <        for (Integer v1 : new Integer[] { 1, null }) {
1526 <
1525 >        for (Integer v1 : new Integer[] { 1, null })
1526 >    {
1527          final CompletableFuture<Integer> f = new CompletableFuture<>();
1528 <        final CompletableFuture<Integer> g = new CompletableFuture<>();
1529 <        final SubtractAction r = new SubtractAction();
1408 <        final CFException ex = new CFException();
1528 >        final FailingFunction[] rs = new FailingFunction[4];
1529 >        for (int i = 0; i < rs.length; i++) rs[i] = new FailingFunction(m);
1530  
1531 <        f.completeExceptionally(ex);
1532 <        g.complete(v1);
1533 <        final CompletableFuture<Void> h = m.thenAcceptBoth(f, g, r);
1531 >        final CompletableFuture<Integer> h0 = m.thenApply(f, rs[0]);
1532 >        final CompletableFuture<Integer> h1 = m.applyToEither(f, f, rs[1]);
1533 >        assertTrue(f.complete(v1));
1534 >        final CompletableFuture<Integer> h2 = m.thenApply(f, rs[2]);
1535 >        final CompletableFuture<Integer> h3 = m.applyToEither(f, f, rs[3]);
1536  
1537 <        checkCompletedWithWrappedCFException(h, ex);
1538 <        checkCompletedWithWrappedCFException(f, ex);
1539 <        assertFalse(r.ran());
1540 <        checkCompletedNormally(g, v1);
1541 <        }
1542 <    }
1537 >        checkCompletedWithWrappedCFException(h0);
1538 >        checkCompletedWithWrappedCFException(h1);
1539 >        checkCompletedWithWrappedCFException(h2);
1540 >        checkCompletedWithWrappedCFException(h3);
1541 >        checkCompletedNormally(f, v1);
1542 >    }}
1543  
1544      /**
1545 <     * thenAcceptBoth result completes exceptionally if action does
1545 >     * thenAccept result completes normally after normal completion of source
1546       */
1547 <    public void testThenAcceptBoth_actionFailed1() {
1547 >    public void testThenAccept_normalCompletion() {
1548          for (ExecutionMode m : ExecutionMode.values())
1549          for (Integer v1 : new Integer[] { 1, null })
1550 <        for (Integer v2 : new Integer[] { 2, null }) {
1428 <
1550 >    {
1551          final CompletableFuture<Integer> f = new CompletableFuture<>();
1552 <        final CompletableFuture<Integer> g = new CompletableFuture<>();
1553 <        final FailingBiConsumer r = new FailingBiConsumer();
1432 <        final CompletableFuture<Void> h = m.thenAcceptBoth(f, g, r);
1552 >        final NoopConsumer[] rs = new NoopConsumer[4];
1553 >        for (int i = 0; i < rs.length; i++) rs[i] = new NoopConsumer(m);
1554  
1555 <        f.complete(v1);
1556 <        checkIncomplete(h);
1557 <        g.complete(v2);
1555 >        final CompletableFuture<Void> h0 = m.thenAccept(f, rs[0]);
1556 >        final CompletableFuture<Void> h1 = m.acceptEither(f, f, rs[1]);
1557 >        checkIncomplete(h0);
1558 >        checkIncomplete(h1);
1559 >        assertTrue(f.complete(v1));
1560 >        final CompletableFuture<Void> h2 = m.thenAccept(f, rs[2]);
1561 >        final CompletableFuture<Void> h3 = m.acceptEither(f, f, rs[3]);
1562  
1563 <        checkCompletedWithWrappedCFException(h);
1563 >        checkCompletedNormally(h0, null);
1564 >        checkCompletedNormally(h1, null);
1565 >        checkCompletedNormally(h2, null);
1566 >        checkCompletedNormally(h3, null);
1567          checkCompletedNormally(f, v1);
1568 <        checkCompletedNormally(g, v2);
1569 <        }
1442 <    }
1568 >        for (NoopConsumer r : rs) r.assertValue(v1);
1569 >    }}
1570  
1571 <    public void testThenAcceptBoth_actionFailed2() {
1571 >    /**
1572 >     * thenAccept result completes exceptionally after exceptional
1573 >     * completion of source
1574 >     */
1575 >    public void testThenAccept_exceptionalCompletion() {
1576          for (ExecutionMode m : ExecutionMode.values())
1577 <        for (Integer v1 : new Integer[] { 1, null })
1578 <        for (Integer v2 : new Integer[] { 2, null }) {
1448 <
1577 >    {
1578 >        final CFException ex = new CFException();
1579          final CompletableFuture<Integer> f = new CompletableFuture<>();
1580 <        final CompletableFuture<Integer> g = new CompletableFuture<>();
1581 <        final FailingBiConsumer r = new FailingBiConsumer();
1452 <        final CompletableFuture<Void> h = m.thenAcceptBoth(f, g, r);
1453 <
1454 <        g.complete(v2);
1455 <        checkIncomplete(h);
1456 <        f.complete(v1);
1580 >        final NoopConsumer[] rs = new NoopConsumer[4];
1581 >        for (int i = 0; i < rs.length; i++) rs[i] = new NoopConsumer(m);
1582  
1583 <        checkCompletedWithWrappedCFException(h);
1584 <        checkCompletedNormally(f, v1);
1585 <        checkCompletedNormally(g, v2);
1586 <        }
1587 <    }
1583 >        final CompletableFuture<Void> h0 = m.thenAccept(f, rs[0]);
1584 >        final CompletableFuture<Void> h1 = m.acceptEither(f, f, rs[1]);
1585 >        assertTrue(f.completeExceptionally(ex));
1586 >        final CompletableFuture<Void> h2 = m.thenAccept(f, rs[2]);
1587 >        final CompletableFuture<Void> h3 = m.acceptEither(f, f, rs[3]);
1588 >
1589 >        checkCompletedWithWrappedException(h0, ex);
1590 >        checkCompletedWithWrappedException(h1, ex);
1591 >        checkCompletedWithWrappedException(h2, ex);
1592 >        checkCompletedWithWrappedException(h3, ex);
1593 >        checkCompletedExceptionally(f, ex);
1594 >        for (NoopConsumer r : rs) r.assertNotInvoked();
1595 >    }}
1596  
1597      /**
1598 <     * thenAcceptBoth result completes exceptionally if either source cancelled
1598 >     * thenAccept result completes exceptionally if source cancelled
1599       */
1600 <    public void testThenAcceptBoth_sourceCancelled1() {
1600 >    public void testThenAccept_sourceCancelled() {
1601          for (ExecutionMode m : ExecutionMode.values())
1602          for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1603 <        for (Integer v1 : new Integer[] { 1, null }) {
1471 <
1603 >    {
1604          final CompletableFuture<Integer> f = new CompletableFuture<>();
1605 <        final CompletableFuture<Integer> g = new CompletableFuture<>();
1606 <        final SubtractAction r = new SubtractAction();
1475 <        final CompletableFuture<Void> h = m.thenAcceptBoth(f, g, r);
1605 >        final NoopConsumer[] rs = new NoopConsumer[4];
1606 >        for (int i = 0; i < rs.length; i++) rs[i] = new NoopConsumer(m);
1607  
1608 +        final CompletableFuture<Void> h0 = m.thenAccept(f, rs[0]);
1609 +        final CompletableFuture<Void> h1 = m.acceptEither(f, f, rs[1]);
1610          assertTrue(f.cancel(mayInterruptIfRunning));
1611 <        checkIncomplete(h);
1612 <        g.complete(v1);
1611 >        final CompletableFuture<Void> h2 = m.thenAccept(f, rs[2]);
1612 >        final CompletableFuture<Void> h3 = m.acceptEither(f, f, rs[3]);
1613  
1614 <        checkCompletedWithWrappedCancellationException(h);
1614 >        checkCompletedWithWrappedCancellationException(h0);
1615 >        checkCompletedWithWrappedCancellationException(h1);
1616 >        checkCompletedWithWrappedCancellationException(h2);
1617 >        checkCompletedWithWrappedCancellationException(h3);
1618          checkCancelled(f);
1619 <        assertEquals(r.invocationCount, 0);
1620 <        checkCompletedNormally(g, v1);
1485 <        }
1486 <    }
1619 >        for (NoopConsumer r : rs) r.assertNotInvoked();
1620 >    }}
1621  
1622 <    public void testThenAcceptBoth_sourceCancelled2() {
1622 >    /**
1623 >     * thenAccept result completes exceptionally if action does
1624 >     */
1625 >    public void testThenAccept_actionFailed() {
1626          for (ExecutionMode m : ExecutionMode.values())
1627 <        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1628 <        for (Integer v1 : new Integer[] { 1, null }) {
1492 <
1627 >        for (Integer v1 : new Integer[] { 1, null })
1628 >    {
1629          final CompletableFuture<Integer> f = new CompletableFuture<>();
1630 <        final CompletableFuture<Integer> g = new CompletableFuture<>();
1631 <        final SubtractAction r = new SubtractAction();
1496 <        final CompletableFuture<Void> h = m.thenAcceptBoth(f, g, r);
1630 >        final FailingConsumer[] rs = new FailingConsumer[4];
1631 >        for (int i = 0; i < rs.length; i++) rs[i] = new FailingConsumer(m);
1632  
1633 <        assertTrue(g.cancel(mayInterruptIfRunning));
1634 <        checkIncomplete(h);
1635 <        f.complete(v1);
1633 >        final CompletableFuture<Void> h0 = m.thenAccept(f, rs[0]);
1634 >        final CompletableFuture<Void> h1 = m.acceptEither(f, f, rs[1]);
1635 >        assertTrue(f.complete(v1));
1636 >        final CompletableFuture<Void> h2 = m.thenAccept(f, rs[2]);
1637 >        final CompletableFuture<Void> h3 = m.acceptEither(f, f, rs[3]);
1638  
1639 <        checkCompletedWithWrappedCancellationException(h);
1640 <        checkCancelled(g);
1641 <        assertEquals(r.invocationCount, 0);
1639 >        checkCompletedWithWrappedCFException(h0);
1640 >        checkCompletedWithWrappedCFException(h1);
1641 >        checkCompletedWithWrappedCFException(h2);
1642 >        checkCompletedWithWrappedCFException(h3);
1643          checkCompletedNormally(f, v1);
1644 <        }
1507 <    }
1644 >    }}
1645  
1646 <    public void testThenAcceptBoth_sourceCancelled3() {
1646 >    /**
1647 >     * thenCombine result completes normally after normal completion
1648 >     * of sources
1649 >     */
1650 >    public void testThenCombine_normalCompletion() {
1651          for (ExecutionMode m : ExecutionMode.values())
1652 <        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1653 <        for (Integer v1 : new Integer[] { 1, null }) {
1654 <
1652 >        for (boolean fFirst : new boolean[] { true, false })
1653 >        for (Integer v1 : new Integer[] { 1, null })
1654 >        for (Integer v2 : new Integer[] { 2, null })
1655 >    {
1656          final CompletableFuture<Integer> f = new CompletableFuture<>();
1657          final CompletableFuture<Integer> g = new CompletableFuture<>();
1658 <        final SubtractAction r = new SubtractAction();
1659 <
1660 <        assertTrue(g.cancel(mayInterruptIfRunning));
1661 <        f.complete(v1);
1662 <        final CompletableFuture<Void> h = m.thenAcceptBoth(f, g, r);
1658 >        final SubtractFunction[] rs = new SubtractFunction[6];
1659 >        for (int i = 0; i < rs.length; i++) rs[i] = new SubtractFunction(m);
1660 >
1661 >        final CompletableFuture<Integer> fst =  fFirst ? f : g;
1662 >        final CompletableFuture<Integer> snd = !fFirst ? f : g;
1663 >        final Integer w1 =  fFirst ? v1 : v2;
1664 >        final Integer w2 = !fFirst ? v1 : v2;
1665 >
1666 >        final CompletableFuture<Integer> h0 = m.thenCombine(f, g, rs[0]);
1667 >        final CompletableFuture<Integer> h1 = m.thenCombine(fst, fst, rs[1]);
1668 >        assertTrue(fst.complete(w1));
1669 >        final CompletableFuture<Integer> h2 = m.thenCombine(f, g, rs[2]);
1670 >        final CompletableFuture<Integer> h3 = m.thenCombine(fst, fst, rs[3]);
1671 >        checkIncomplete(h0); rs[0].assertNotInvoked();
1672 >        checkIncomplete(h2); rs[2].assertNotInvoked();
1673 >        checkCompletedNormally(h1, subtract(w1, w1));
1674 >        checkCompletedNormally(h3, subtract(w1, w1));
1675 >        rs[1].assertValue(subtract(w1, w1));
1676 >        rs[3].assertValue(subtract(w1, w1));
1677 >        assertTrue(snd.complete(w2));
1678 >        final CompletableFuture<Integer> h4 = m.thenCombine(f, g, rs[4]);
1679 >
1680 >        checkCompletedNormally(h0, subtract(v1, v2));
1681 >        checkCompletedNormally(h2, subtract(v1, v2));
1682 >        checkCompletedNormally(h4, subtract(v1, v2));
1683 >        rs[0].assertValue(subtract(v1, v2));
1684 >        rs[2].assertValue(subtract(v1, v2));
1685 >        rs[4].assertValue(subtract(v1, v2));
1686  
1522        checkCompletedWithWrappedCancellationException(h);
1523        checkCancelled(g);
1524        assertEquals(r.invocationCount, 0);
1687          checkCompletedNormally(f, v1);
1688 <        }
1689 <    }
1528 <
1529 <    public void testThenAcceptBoth_sourceCancelled4() {
1530 <        for (ExecutionMode m : ExecutionMode.values())
1531 <        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1532 <        for (Integer v1 : new Integer[] { 1, null }) {
1533 <
1534 <        final CompletableFuture<Integer> f = new CompletableFuture<>();
1535 <        final CompletableFuture<Integer> g = new CompletableFuture<>();
1536 <        final SubtractAction r = new SubtractAction();
1537 <
1538 <        assertTrue(f.cancel(mayInterruptIfRunning));
1539 <        g.complete(v1);
1540 <        final CompletableFuture<Void> h = m.thenAcceptBoth(f, g, r);
1541 <
1542 <        checkCompletedWithWrappedCancellationException(h);
1543 <        checkCancelled(f);
1544 <        assertEquals(r.invocationCount, 0);
1545 <        checkCompletedNormally(g, v1);
1546 <        }
1547 <    }
1688 >        checkCompletedNormally(g, v2);
1689 >    }}
1690  
1691      /**
1692 <     * runAfterBoth result completes normally after normal
1693 <     * completion of sources
1692 >     * thenCombine result completes exceptionally after exceptional
1693 >     * completion of either source
1694       */
1695 <    public void testRunAfterBoth_normalCompletion1() {
1695 >    public void testThenCombine_exceptionalCompletion() throws Throwable {
1696          for (ExecutionMode m : ExecutionMode.values())
1697 +        for (boolean fFirst : new boolean[] { true, false })
1698 +        for (boolean failFirst : new boolean[] { true, false })
1699          for (Integer v1 : new Integer[] { 1, null })
1700 <        for (Integer v2 : new Integer[] { 2, null }) {
1557 <
1700 >    {
1701          final CompletableFuture<Integer> f = new CompletableFuture<>();
1702          final CompletableFuture<Integer> g = new CompletableFuture<>();
1703 <        final Noop r = new Noop();
1704 <        final CompletableFuture<Void> h = m.runAfterBoth(f, g, r);
1705 <
1706 <        f.complete(v1);
1707 <        checkIncomplete(h);
1708 <        assertFalse(r.ran);
1709 <        g.complete(v2);
1710 <
1711 <        checkCompletedNormally(h, null);
1712 <        assertEquals(r.invocationCount, 1);
1713 <        checkCompletedNormally(f, v1);
1714 <        checkCompletedNormally(g, v2);
1715 <        }
1716 <    }
1703 >        final CFException ex = new CFException();
1704 >        final SubtractFunction r1 = new SubtractFunction(m);
1705 >        final SubtractFunction r2 = new SubtractFunction(m);
1706 >        final SubtractFunction r3 = new SubtractFunction(m);
1707 >
1708 >        final CompletableFuture<Integer> fst =  fFirst ? f : g;
1709 >        final CompletableFuture<Integer> snd = !fFirst ? f : g;
1710 >        final Callable<Boolean> complete1 = failFirst ?
1711 >            () -> fst.completeExceptionally(ex) :
1712 >            () -> fst.complete(v1);
1713 >        final Callable<Boolean> complete2 = failFirst ?
1714 >            () -> snd.complete(v1) :
1715 >            () -> snd.completeExceptionally(ex);
1716 >
1717 >        final CompletableFuture<Integer> h1 = m.thenCombine(f, g, r1);
1718 >        assertTrue(complete1.call());
1719 >        final CompletableFuture<Integer> h2 = m.thenCombine(f, g, r2);
1720 >        checkIncomplete(h1);
1721 >        checkIncomplete(h2);
1722 >        assertTrue(complete2.call());
1723 >        final CompletableFuture<Integer> h3 = m.thenCombine(f, g, r3);
1724 >
1725 >        checkCompletedWithWrappedException(h1, ex);
1726 >        checkCompletedWithWrappedException(h2, ex);
1727 >        checkCompletedWithWrappedException(h3, ex);
1728 >        r1.assertNotInvoked();
1729 >        r2.assertNotInvoked();
1730 >        r3.assertNotInvoked();
1731 >        checkCompletedNormally(failFirst ? snd : fst, v1);
1732 >        checkCompletedExceptionally(failFirst ? fst : snd, ex);
1733 >    }}
1734  
1735 <    public void testRunAfterBoth_normalCompletion2() {
1735 >    /**
1736 >     * thenCombine result completes exceptionally if either source cancelled
1737 >     */
1738 >    public void testThenCombine_sourceCancelled() throws Throwable {
1739          for (ExecutionMode m : ExecutionMode.values())
1740 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1741 +        for (boolean fFirst : new boolean[] { true, false })
1742 +        for (boolean failFirst : new boolean[] { true, false })
1743          for (Integer v1 : new Integer[] { 1, null })
1744 <        for (Integer v2 : new Integer[] { 2, null }) {
1579 <
1744 >    {
1745          final CompletableFuture<Integer> f = new CompletableFuture<>();
1746          final CompletableFuture<Integer> g = new CompletableFuture<>();
1747 <        final Noop r = new Noop();
1748 <        final CompletableFuture<Void> h = m.runAfterBoth(f, g, r);
1749 <
1750 <        g.complete(v2);
1751 <        checkIncomplete(h);
1752 <        assertFalse(r.ran);
1753 <        f.complete(v1);
1754 <
1755 <        checkCompletedNormally(h, null);
1756 <        assertEquals(r.invocationCount, 1);
1757 <        checkCompletedNormally(f, v1);
1758 <        checkCompletedNormally(g, v2);
1759 <        }
1760 <    }
1747 >        final SubtractFunction r1 = new SubtractFunction(m);
1748 >        final SubtractFunction r2 = new SubtractFunction(m);
1749 >        final SubtractFunction r3 = new SubtractFunction(m);
1750 >
1751 >        final CompletableFuture<Integer> fst =  fFirst ? f : g;
1752 >        final CompletableFuture<Integer> snd = !fFirst ? f : g;
1753 >        final Callable<Boolean> complete1 = failFirst ?
1754 >            () -> fst.cancel(mayInterruptIfRunning) :
1755 >            () -> fst.complete(v1);
1756 >        final Callable<Boolean> complete2 = failFirst ?
1757 >            () -> snd.complete(v1) :
1758 >            () -> snd.cancel(mayInterruptIfRunning);
1759 >
1760 >        final CompletableFuture<Integer> h1 = m.thenCombine(f, g, r1);
1761 >        assertTrue(complete1.call());
1762 >        final CompletableFuture<Integer> h2 = m.thenCombine(f, g, r2);
1763 >        checkIncomplete(h1);
1764 >        checkIncomplete(h2);
1765 >        assertTrue(complete2.call());
1766 >        final CompletableFuture<Integer> h3 = m.thenCombine(f, g, r3);
1767 >
1768 >        checkCompletedWithWrappedCancellationException(h1);
1769 >        checkCompletedWithWrappedCancellationException(h2);
1770 >        checkCompletedWithWrappedCancellationException(h3);
1771 >        r1.assertNotInvoked();
1772 >        r2.assertNotInvoked();
1773 >        r3.assertNotInvoked();
1774 >        checkCompletedNormally(failFirst ? snd : fst, v1);
1775 >        checkCancelled(failFirst ? fst : snd);
1776 >    }}
1777  
1778 <    public void testRunAfterBoth_normalCompletion3() {
1778 >    /**
1779 >     * thenCombine result completes exceptionally if action does
1780 >     */
1781 >    public void testThenCombine_actionFailed() {
1782          for (ExecutionMode m : ExecutionMode.values())
1783 +        for (boolean fFirst : new boolean[] { true, false })
1784          for (Integer v1 : new Integer[] { 1, null })
1785 <        for (Integer v2 : new Integer[] { 2, null }) {
1786 <
1785 >        for (Integer v2 : new Integer[] { 2, null })
1786 >    {
1787          final CompletableFuture<Integer> f = new CompletableFuture<>();
1788          final CompletableFuture<Integer> g = new CompletableFuture<>();
1789 <        final Noop r = new Noop();
1789 >        final FailingBiFunction r1 = new FailingBiFunction(m);
1790 >        final FailingBiFunction r2 = new FailingBiFunction(m);
1791 >        final FailingBiFunction r3 = new FailingBiFunction(m);
1792  
1793 <        g.complete(v2);
1794 <        f.complete(v1);
1795 <        final CompletableFuture<Void> h = m.runAfterBoth(f, g, r);
1793 >        final CompletableFuture<Integer> fst =  fFirst ? f : g;
1794 >        final CompletableFuture<Integer> snd = !fFirst ? f : g;
1795 >        final Integer w1 =  fFirst ? v1 : v2;
1796 >        final Integer w2 = !fFirst ? v1 : v2;
1797  
1798 <        checkCompletedNormally(h, null);
1799 <        assertTrue(r.ran);
1798 >        final CompletableFuture<Integer> h1 = m.thenCombine(f, g, r1);
1799 >        assertTrue(fst.complete(w1));
1800 >        final CompletableFuture<Integer> h2 = m.thenCombine(f, g, r2);
1801 >        assertTrue(snd.complete(w2));
1802 >        final CompletableFuture<Integer> h3 = m.thenCombine(f, g, r3);
1803 >
1804 >        checkCompletedWithWrappedCFException(h1);
1805 >        checkCompletedWithWrappedCFException(h2);
1806 >        checkCompletedWithWrappedCFException(h3);
1807 >        r1.assertInvoked();
1808 >        r2.assertInvoked();
1809 >        r3.assertInvoked();
1810          checkCompletedNormally(f, v1);
1811          checkCompletedNormally(g, v2);
1812 <        }
1615 <    }
1812 >    }}
1813  
1814 <    public void testRunAfterBoth_normalCompletion4() {
1814 >    /**
1815 >     * thenAcceptBoth result completes normally after normal
1816 >     * completion of sources
1817 >     */
1818 >    public void testThenAcceptBoth_normalCompletion() {
1819          for (ExecutionMode m : ExecutionMode.values())
1820 +        for (boolean fFirst : new boolean[] { true, false })
1821          for (Integer v1 : new Integer[] { 1, null })
1822 <        for (Integer v2 : new Integer[] { 2, null }) {
1823 <
1822 >        for (Integer v2 : new Integer[] { 2, null })
1823 >    {
1824          final CompletableFuture<Integer> f = new CompletableFuture<>();
1825          final CompletableFuture<Integer> g = new CompletableFuture<>();
1826 <        final Noop r = new Noop();
1827 <
1828 <        f.complete(v1);
1829 <        g.complete(v2);
1830 <        final CompletableFuture<Void> h = m.runAfterBoth(f, g, r);
1831 <
1832 <        checkCompletedNormally(h, null);
1833 <        assertEquals(r.invocationCount, 1);
1826 >        final SubtractAction r1 = new SubtractAction(m);
1827 >        final SubtractAction r2 = new SubtractAction(m);
1828 >        final SubtractAction r3 = new SubtractAction(m);
1829 >
1830 >        final CompletableFuture<Integer> fst =  fFirst ? f : g;
1831 >        final CompletableFuture<Integer> snd = !fFirst ? f : g;
1832 >        final Integer w1 =  fFirst ? v1 : v2;
1833 >        final Integer w2 = !fFirst ? v1 : v2;
1834 >
1835 >        final CompletableFuture<Void> h1 = m.thenAcceptBoth(f, g, r1);
1836 >        assertTrue(fst.complete(w1));
1837 >        final CompletableFuture<Void> h2 = m.thenAcceptBoth(f, g, r2);
1838 >        checkIncomplete(h1);
1839 >        checkIncomplete(h2);
1840 >        r1.assertNotInvoked();
1841 >        r2.assertNotInvoked();
1842 >        assertTrue(snd.complete(w2));
1843 >        final CompletableFuture<Void> h3 = m.thenAcceptBoth(f, g, r3);
1844 >
1845 >        checkCompletedNormally(h1, null);
1846 >        checkCompletedNormally(h2, null);
1847 >        checkCompletedNormally(h3, null);
1848 >        r1.assertValue(subtract(v1, v2));
1849 >        r2.assertValue(subtract(v1, v2));
1850 >        r3.assertValue(subtract(v1, v2));
1851          checkCompletedNormally(f, v1);
1852          checkCompletedNormally(g, v2);
1853 <        }
1635 <    }
1853 >    }}
1854  
1855      /**
1856 <     * runAfterBoth result completes exceptionally after exceptional
1856 >     * thenAcceptBoth result completes exceptionally after exceptional
1857       * completion of either source
1858       */
1859 <    public void testRunAfterBoth_exceptionalCompletion1() {
1859 >    public void testThenAcceptBoth_exceptionalCompletion() throws Throwable {
1860          for (ExecutionMode m : ExecutionMode.values())
1861 <        for (Integer v1 : new Integer[] { 1, null }) {
1862 <
1861 >        for (boolean fFirst : new boolean[] { true, false })
1862 >        for (boolean failFirst : new boolean[] { true, false })
1863 >        for (Integer v1 : new Integer[] { 1, null })
1864 >    {
1865          final CompletableFuture<Integer> f = new CompletableFuture<>();
1866          final CompletableFuture<Integer> g = new CompletableFuture<>();
1647        final Noop r = new Noop();
1648        final CompletableFuture<Void> h = m.runAfterBoth(f, g, r);
1867          final CFException ex = new CFException();
1868 +        final SubtractAction r1 = new SubtractAction(m);
1869 +        final SubtractAction r2 = new SubtractAction(m);
1870 +        final SubtractAction r3 = new SubtractAction(m);
1871 +
1872 +        final CompletableFuture<Integer> fst =  fFirst ? f : g;
1873 +        final CompletableFuture<Integer> snd = !fFirst ? f : g;
1874 +        final Callable<Boolean> complete1 = failFirst ?
1875 +            () -> fst.completeExceptionally(ex) :
1876 +            () -> fst.complete(v1);
1877 +        final Callable<Boolean> complete2 = failFirst ?
1878 +            () -> snd.complete(v1) :
1879 +            () -> snd.completeExceptionally(ex);
1880 +
1881 +        final CompletableFuture<Void> h1 = m.thenAcceptBoth(f, g, r1);
1882 +        assertTrue(complete1.call());
1883 +        final CompletableFuture<Void> h2 = m.thenAcceptBoth(f, g, r2);
1884 +        checkIncomplete(h1);
1885 +        checkIncomplete(h2);
1886 +        assertTrue(complete2.call());
1887 +        final CompletableFuture<Void> h3 = m.thenAcceptBoth(f, g, r3);
1888 +
1889 +        checkCompletedWithWrappedException(h1, ex);
1890 +        checkCompletedWithWrappedException(h2, ex);
1891 +        checkCompletedWithWrappedException(h3, ex);
1892 +        r1.assertNotInvoked();
1893 +        r2.assertNotInvoked();
1894 +        r3.assertNotInvoked();
1895 +        checkCompletedNormally(failFirst ? snd : fst, v1);
1896 +        checkCompletedExceptionally(failFirst ? fst : snd, ex);
1897 +    }}
1898  
1899 <        f.completeExceptionally(ex);
1900 <        checkIncomplete(h);
1901 <        g.complete(v1);
1902 <
1655 <        checkCompletedWithWrappedCFException(h, ex);
1656 <        checkCompletedWithWrappedCFException(f, ex);
1657 <        assertEquals(r.invocationCount, 0);
1658 <        checkCompletedNormally(g, v1);
1659 <        }
1660 <    }
1661 <
1662 <    public void testRunAfterBoth_exceptionalCompletion2() {
1899 >    /**
1900 >     * thenAcceptBoth result completes exceptionally if either source cancelled
1901 >     */
1902 >    public void testThenAcceptBoth_sourceCancelled() throws Throwable {
1903          for (ExecutionMode m : ExecutionMode.values())
1904 <        for (Integer v1 : new Integer[] { 1, null }) {
1905 <
1904 >        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1905 >        for (boolean fFirst : new boolean[] { true, false })
1906 >        for (boolean failFirst : new boolean[] { true, false })
1907 >        for (Integer v1 : new Integer[] { 1, null })
1908 >    {
1909          final CompletableFuture<Integer> f = new CompletableFuture<>();
1910          final CompletableFuture<Integer> g = new CompletableFuture<>();
1911 <        final Noop r = new Noop();
1912 <        final CompletableFuture<Void> h = m.runAfterBoth(f, g, r);
1913 <        final CFException ex = new CFException();
1911 >        final SubtractAction r1 = new SubtractAction(m);
1912 >        final SubtractAction r2 = new SubtractAction(m);
1913 >        final SubtractAction r3 = new SubtractAction(m);
1914 >
1915 >        final CompletableFuture<Integer> fst =  fFirst ? f : g;
1916 >        final CompletableFuture<Integer> snd = !fFirst ? f : g;
1917 >        final Callable<Boolean> complete1 = failFirst ?
1918 >            () -> fst.cancel(mayInterruptIfRunning) :
1919 >            () -> fst.complete(v1);
1920 >        final Callable<Boolean> complete2 = failFirst ?
1921 >            () -> snd.complete(v1) :
1922 >            () -> snd.cancel(mayInterruptIfRunning);
1923 >
1924 >        final CompletableFuture<Void> h1 = m.thenAcceptBoth(f, g, r1);
1925 >        assertTrue(complete1.call());
1926 >        final CompletableFuture<Void> h2 = m.thenAcceptBoth(f, g, r2);
1927 >        checkIncomplete(h1);
1928 >        checkIncomplete(h2);
1929 >        assertTrue(complete2.call());
1930 >        final CompletableFuture<Void> h3 = m.thenAcceptBoth(f, g, r3);
1931 >
1932 >        checkCompletedWithWrappedCancellationException(h1);
1933 >        checkCompletedWithWrappedCancellationException(h2);
1934 >        checkCompletedWithWrappedCancellationException(h3);
1935 >        r1.assertNotInvoked();
1936 >        r2.assertNotInvoked();
1937 >        r3.assertNotInvoked();
1938 >        checkCompletedNormally(failFirst ? snd : fst, v1);
1939 >        checkCancelled(failFirst ? fst : snd);
1940 >    }}
1941  
1942 <        g.completeExceptionally(ex);
1943 <        checkIncomplete(h);
1944 <        f.complete(v1);
1945 <
1676 <        checkCompletedWithWrappedCFException(h, ex);
1677 <        checkCompletedWithWrappedCFException(g, ex);
1678 <        assertEquals(r.invocationCount, 0);
1679 <        checkCompletedNormally(f, v1);
1680 <        }
1681 <    }
1682 <
1683 <    public void testRunAfterBoth_exceptionalCompletion3() {
1942 >    /**
1943 >     * thenAcceptBoth result completes exceptionally if action does
1944 >     */
1945 >    public void testThenAcceptBoth_actionFailed() {
1946          for (ExecutionMode m : ExecutionMode.values())
1947 <        for (Integer v1 : new Integer[] { 1, null }) {
1948 <
1947 >        for (boolean fFirst : new boolean[] { true, false })
1948 >        for (Integer v1 : new Integer[] { 1, null })
1949 >        for (Integer v2 : new Integer[] { 2, null })
1950 >    {
1951          final CompletableFuture<Integer> f = new CompletableFuture<>();
1952          final CompletableFuture<Integer> g = new CompletableFuture<>();
1953 <        final Noop r = new Noop();
1954 <        final CFException ex = new CFException();
1955 <
1692 <        g.completeExceptionally(ex);
1693 <        f.complete(v1);
1694 <        final CompletableFuture<Void> h = m.runAfterBoth(f, g, r);
1695 <
1696 <        checkCompletedWithWrappedCFException(h, ex);
1697 <        checkCompletedWithWrappedCFException(g, ex);
1698 <        assertEquals(r.invocationCount, 0);
1699 <        checkCompletedNormally(f, v1);
1700 <        }
1701 <    }
1702 <
1703 <    public void testRunAfterBoth_exceptionalCompletion4() {
1704 <        for (ExecutionMode m : ExecutionMode.values())
1705 <        for (Integer v1 : new Integer[] { 1, null }) {
1953 >        final FailingBiConsumer r1 = new FailingBiConsumer(m);
1954 >        final FailingBiConsumer r2 = new FailingBiConsumer(m);
1955 >        final FailingBiConsumer r3 = new FailingBiConsumer(m);
1956  
1957 <        final CompletableFuture<Integer> f = new CompletableFuture<>();
1958 <        final CompletableFuture<Integer> g = new CompletableFuture<>();
1959 <        final Noop r = new Noop();
1960 <        final CFException ex = new CFException();
1957 >        final CompletableFuture<Integer> fst =  fFirst ? f : g;
1958 >        final CompletableFuture<Integer> snd = !fFirst ? f : g;
1959 >        final Integer w1 =  fFirst ? v1 : v2;
1960 >        final Integer w2 = !fFirst ? v1 : v2;
1961  
1962 <        f.completeExceptionally(ex);
1963 <        g.complete(v1);
1964 <        final CompletableFuture<Void> h = m.runAfterBoth(f, g, r);
1962 >        final CompletableFuture<Void> h1 = m.thenAcceptBoth(f, g, r1);
1963 >        assertTrue(fst.complete(w1));
1964 >        final CompletableFuture<Void> h2 = m.thenAcceptBoth(f, g, r2);
1965 >        assertTrue(snd.complete(w2));
1966 >        final CompletableFuture<Void> h3 = m.thenAcceptBoth(f, g, r3);
1967  
1968 <        checkCompletedWithWrappedCFException(h, ex);
1969 <        checkCompletedWithWrappedCFException(f, ex);
1970 <        assertEquals(r.invocationCount, 0);
1971 <        checkCompletedNormally(g, v1);
1972 <        }
1973 <    }
1968 >        checkCompletedWithWrappedCFException(h1);
1969 >        checkCompletedWithWrappedCFException(h2);
1970 >        checkCompletedWithWrappedCFException(h3);
1971 >        r1.assertInvoked();
1972 >        r2.assertInvoked();
1973 >        r3.assertInvoked();
1974 >        checkCompletedNormally(f, v1);
1975 >        checkCompletedNormally(g, v2);
1976 >    }}
1977  
1978      /**
1979 <     * runAfterBoth result completes exceptionally if action does
1979 >     * runAfterBoth result completes normally after normal
1980 >     * completion of sources
1981       */
1982 <    public void testRunAfterBoth_actionFailed1() {
1982 >    public void testRunAfterBoth_normalCompletion() {
1983          for (ExecutionMode m : ExecutionMode.values())
1984 +        for (boolean fFirst : new boolean[] { true, false })
1985          for (Integer v1 : new Integer[] { 1, null })
1986 <        for (Integer v2 : new Integer[] { 2, null }) {
1987 <
1986 >        for (Integer v2 : new Integer[] { 2, null })
1987 >    {
1988          final CompletableFuture<Integer> f = new CompletableFuture<>();
1989          final CompletableFuture<Integer> g = new CompletableFuture<>();
1990 <        final FailingNoop r = new FailingNoop();
1991 <        final CompletableFuture<Void> h = m.runAfterBoth(f, g, r);
1992 <
1993 <        f.complete(v1);
1994 <        checkIncomplete(h);
1995 <        g.complete(v2);
1996 <
1997 <        checkCompletedWithWrappedCFException(h);
1990 >        final Noop r1 = new Noop(m);
1991 >        final Noop r2 = new Noop(m);
1992 >        final Noop r3 = new Noop(m);
1993 >
1994 >        final CompletableFuture<Integer> fst =  fFirst ? f : g;
1995 >        final CompletableFuture<Integer> snd = !fFirst ? f : g;
1996 >        final Integer w1 =  fFirst ? v1 : v2;
1997 >        final Integer w2 = !fFirst ? v1 : v2;
1998 >
1999 >        final CompletableFuture<Void> h1 = m.runAfterBoth(f, g, r1);
2000 >        assertTrue(fst.complete(w1));
2001 >        final CompletableFuture<Void> h2 = m.runAfterBoth(f, g, r2);
2002 >        checkIncomplete(h1);
2003 >        checkIncomplete(h2);
2004 >        r1.assertNotInvoked();
2005 >        r2.assertNotInvoked();
2006 >        assertTrue(snd.complete(w2));
2007 >        final CompletableFuture<Void> h3 = m.runAfterBoth(f, g, r3);
2008 >
2009 >        checkCompletedNormally(h1, null);
2010 >        checkCompletedNormally(h2, null);
2011 >        checkCompletedNormally(h3, null);
2012 >        r1.assertInvoked();
2013 >        r2.assertInvoked();
2014 >        r3.assertInvoked();
2015          checkCompletedNormally(f, v1);
2016          checkCompletedNormally(g, v2);
2017 <        }
1744 <    }
2017 >    }}
2018  
2019 <    public void testRunAfterBoth_actionFailed2() {
2019 >    /**
2020 >     * runAfterBoth result completes exceptionally after exceptional
2021 >     * completion of either source
2022 >     */
2023 >    public void testRunAfterBoth_exceptionalCompletion() throws Throwable {
2024          for (ExecutionMode m : ExecutionMode.values())
2025 +        for (boolean fFirst : new boolean[] { true, false })
2026 +        for (boolean failFirst : new boolean[] { true, false })
2027          for (Integer v1 : new Integer[] { 1, null })
2028 <        for (Integer v2 : new Integer[] { 2, null }) {
1750 <
2028 >    {
2029          final CompletableFuture<Integer> f = new CompletableFuture<>();
2030          final CompletableFuture<Integer> g = new CompletableFuture<>();
2031 <        final FailingNoop r = new FailingNoop();
2032 <        final CompletableFuture<Void> h = m.runAfterBoth(f, g, r);
2033 <
2034 <        g.complete(v2);
2035 <        checkIncomplete(h);
2036 <        f.complete(v1);
2037 <
2038 <        checkCompletedWithWrappedCFException(h);
2039 <        checkCompletedNormally(f, v1);
2040 <        checkCompletedNormally(g, v2);
2041 <        }
2042 <    }
2031 >        final CFException ex = new CFException();
2032 >        final Noop r1 = new Noop(m);
2033 >        final Noop r2 = new Noop(m);
2034 >        final Noop r3 = new Noop(m);
2035 >
2036 >        final CompletableFuture<Integer> fst =  fFirst ? f : g;
2037 >        final CompletableFuture<Integer> snd = !fFirst ? f : g;
2038 >        final Callable<Boolean> complete1 = failFirst ?
2039 >            () -> fst.completeExceptionally(ex) :
2040 >            () -> fst.complete(v1);
2041 >        final Callable<Boolean> complete2 = failFirst ?
2042 >            () -> snd.complete(v1) :
2043 >            () -> snd.completeExceptionally(ex);
2044 >
2045 >        final CompletableFuture<Void> h1 = m.runAfterBoth(f, g, r1);
2046 >        assertTrue(complete1.call());
2047 >        final CompletableFuture<Void> h2 = m.runAfterBoth(f, g, r2);
2048 >        checkIncomplete(h1);
2049 >        checkIncomplete(h2);
2050 >        assertTrue(complete2.call());
2051 >        final CompletableFuture<Void> h3 = m.runAfterBoth(f, g, r3);
2052 >
2053 >        checkCompletedWithWrappedException(h1, ex);
2054 >        checkCompletedWithWrappedException(h2, ex);
2055 >        checkCompletedWithWrappedException(h3, ex);
2056 >        r1.assertNotInvoked();
2057 >        r2.assertNotInvoked();
2058 >        r3.assertNotInvoked();
2059 >        checkCompletedNormally(failFirst ? snd : fst, v1);
2060 >        checkCompletedExceptionally(failFirst ? fst : snd, ex);
2061 >    }}
2062  
2063      /**
2064       * runAfterBoth result completes exceptionally if either source cancelled
2065       */
2066 <    public void testRunAfterBoth_sourceCancelled1() {
2066 >    public void testRunAfterBoth_sourceCancelled() throws Throwable {
2067          for (ExecutionMode m : ExecutionMode.values())
2068          for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2069 <        for (Integer v1 : new Integer[] { 1, null }) {
2070 <
2069 >        for (boolean fFirst : new boolean[] { true, false })
2070 >        for (boolean failFirst : new boolean[] { true, false })
2071 >        for (Integer v1 : new Integer[] { 1, null })
2072 >    {
2073          final CompletableFuture<Integer> f = new CompletableFuture<>();
2074          final CompletableFuture<Integer> g = new CompletableFuture<>();
2075 <        final Noop r = new Noop();
2076 <        final CompletableFuture<Void> h = m.runAfterBoth(f, g, r);
2075 >        final Noop r1 = new Noop(m);
2076 >        final Noop r2 = new Noop(m);
2077 >        final Noop r3 = new Noop(m);
2078 >
2079 >        final CompletableFuture<Integer> fst =  fFirst ? f : g;
2080 >        final CompletableFuture<Integer> snd = !fFirst ? f : g;
2081 >        final Callable<Boolean> complete1 = failFirst ?
2082 >            () -> fst.cancel(mayInterruptIfRunning) :
2083 >            () -> fst.complete(v1);
2084 >        final Callable<Boolean> complete2 = failFirst ?
2085 >            () -> snd.complete(v1) :
2086 >            () -> snd.cancel(mayInterruptIfRunning);
2087 >
2088 >        final CompletableFuture<Void> h1 = m.runAfterBoth(f, g, r1);
2089 >        assertTrue(complete1.call());
2090 >        final CompletableFuture<Void> h2 = m.runAfterBoth(f, g, r2);
2091 >        checkIncomplete(h1);
2092 >        checkIncomplete(h2);
2093 >        assertTrue(complete2.call());
2094 >        final CompletableFuture<Void> h3 = m.runAfterBoth(f, g, r3);
2095 >
2096 >        checkCompletedWithWrappedCancellationException(h1);
2097 >        checkCompletedWithWrappedCancellationException(h2);
2098 >        checkCompletedWithWrappedCancellationException(h3);
2099 >        r1.assertNotInvoked();
2100 >        r2.assertNotInvoked();
2101 >        r3.assertNotInvoked();
2102 >        checkCompletedNormally(failFirst ? snd : fst, v1);
2103 >        checkCancelled(failFirst ? fst : snd);
2104 >    }}
2105  
2106 <        assertTrue(f.cancel(mayInterruptIfRunning));
2107 <        checkIncomplete(h);
2108 <        g.complete(v1);
2109 <
1783 <        checkCompletedWithWrappedCancellationException(h);
1784 <        checkCancelled(f);
1785 <        assertEquals(r.invocationCount, 0);
1786 <        checkCompletedNormally(g, v1);
1787 <        }
1788 <    }
1789 <
1790 <    public void testRunAfterBoth_sourceCancelled2() {
2106 >    /**
2107 >     * runAfterBoth result completes exceptionally if action does
2108 >     */
2109 >    public void testRunAfterBoth_actionFailed() {
2110          for (ExecutionMode m : ExecutionMode.values())
2111 <        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2112 <        for (Integer v1 : new Integer[] { 1, null }) {
2113 <
2111 >        for (boolean fFirst : new boolean[] { true, false })
2112 >        for (Integer v1 : new Integer[] { 1, null })
2113 >        for (Integer v2 : new Integer[] { 2, null })
2114 >    {
2115          final CompletableFuture<Integer> f = new CompletableFuture<>();
2116          final CompletableFuture<Integer> g = new CompletableFuture<>();
2117 <        final Noop r = new Noop();
2118 <        final CompletableFuture<Void> h = m.runAfterBoth(f, g, r);
2117 >        final FailingRunnable r1 = new FailingRunnable(m);
2118 >        final FailingRunnable r2 = new FailingRunnable(m);
2119 >        final FailingRunnable r3 = new FailingRunnable(m);
2120  
2121 <        assertTrue(g.cancel(mayInterruptIfRunning));
2122 <        checkIncomplete(h);
2123 <        f.complete(v1);
2121 >        final CompletableFuture<Integer> fst =  fFirst ? f : g;
2122 >        final CompletableFuture<Integer> snd = !fFirst ? f : g;
2123 >        final Integer w1 =  fFirst ? v1 : v2;
2124 >        final Integer w2 = !fFirst ? v1 : v2;
2125  
2126 <        checkCompletedWithWrappedCancellationException(h);
2127 <        checkCancelled(g);
2128 <        assertEquals(r.invocationCount, 0);
2129 <        checkCompletedNormally(f, v1);
2130 <        }
1809 <    }
1810 <
1811 <    public void testRunAfterBoth_sourceCancelled3() {
1812 <        for (ExecutionMode m : ExecutionMode.values())
1813 <        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1814 <        for (Integer v1 : new Integer[] { 1, null }) {
1815 <
1816 <        final CompletableFuture<Integer> f = new CompletableFuture<>();
1817 <        final CompletableFuture<Integer> g = new CompletableFuture<>();
1818 <        final Noop r = new Noop();
2126 >        final CompletableFuture<Void> h1 = m.runAfterBoth(f, g, r1);
2127 >        assertTrue(fst.complete(w1));
2128 >        final CompletableFuture<Void> h2 = m.runAfterBoth(f, g, r2);
2129 >        assertTrue(snd.complete(w2));
2130 >        final CompletableFuture<Void> h3 = m.runAfterBoth(f, g, r3);
2131  
2132 <        assertTrue(g.cancel(mayInterruptIfRunning));
2133 <        f.complete(v1);
2134 <        final CompletableFuture<Void> h = m.runAfterBoth(f, g, r);
2135 <
2136 <        checkCompletedWithWrappedCancellationException(h);
2137 <        checkCancelled(g);
1826 <        assertEquals(r.invocationCount, 0);
2132 >        checkCompletedWithWrappedCFException(h1);
2133 >        checkCompletedWithWrappedCFException(h2);
2134 >        checkCompletedWithWrappedCFException(h3);
2135 >        r1.assertInvoked();
2136 >        r2.assertInvoked();
2137 >        r3.assertInvoked();
2138          checkCompletedNormally(f, v1);
2139 <        }
2140 <    }
1830 <
1831 <    public void testRunAfterBoth_sourceCancelled4() {
1832 <        for (ExecutionMode m : ExecutionMode.values())
1833 <        for (boolean mayInterruptIfRunning : 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 Noop r = new Noop();
1839 <
1840 <        assertTrue(f.cancel(mayInterruptIfRunning));
1841 <        g.complete(v1);
1842 <        final CompletableFuture<Void> h = m.runAfterBoth(f, g, r);
1843 <
1844 <        checkCompletedWithWrappedCancellationException(h);
1845 <        checkCancelled(f);
1846 <        assertEquals(r.invocationCount, 0);
1847 <        checkCompletedNormally(g, v1);
1848 <        }
1849 <    }
2139 >        checkCompletedNormally(g, v2);
2140 >    }}
2141  
2142      /**
2143       * applyToEither result completes normally after normal completion
2144       * of either source
2145       */
2146 <    public void testApplyToEither_normalCompletion1() {
2146 >    public void testApplyToEither_normalCompletion() {
2147          for (ExecutionMode m : ExecutionMode.values())
2148          for (Integer v1 : new Integer[] { 1, null })
2149 <        for (Integer v2 : new Integer[] { 2, null }) {
2150 <
2149 >        for (Integer v2 : new Integer[] { 2, null })
2150 >    {
2151          final CompletableFuture<Integer> f = new CompletableFuture<>();
2152          final CompletableFuture<Integer> g = new CompletableFuture<>();
2153 <        final IncFunction r = new IncFunction();
2154 <        final CompletableFuture<Integer> h = m.applyToEither(f, g, r);
2153 >        final IncFunction[] rs = new IncFunction[6];
2154 >        for (int i = 0; i < rs.length; i++) rs[i] = new IncFunction(m);
2155  
2156 +        final CompletableFuture<Integer> h0 = m.applyToEither(f, g, rs[0]);
2157 +        final CompletableFuture<Integer> h1 = m.applyToEither(g, f, rs[1]);
2158 +        checkIncomplete(h0);
2159 +        checkIncomplete(h1);
2160 +        rs[0].assertNotInvoked();
2161 +        rs[1].assertNotInvoked();
2162          f.complete(v1);
2163 <        checkCompletedNormally(h, inc(v1));
2163 >        checkCompletedNormally(h0, inc(v1));
2164 >        checkCompletedNormally(h1, inc(v1));
2165 >        final CompletableFuture<Integer> h2 = m.applyToEither(f, g, rs[2]);
2166 >        final CompletableFuture<Integer> h3 = m.applyToEither(g, f, rs[3]);
2167 >        checkCompletedNormally(h2, inc(v1));
2168 >        checkCompletedNormally(h3, inc(v1));
2169          g.complete(v2);
2170  
2171 <        checkCompletedNormally(f, v1);
2172 <        checkCompletedNormally(g, v2);
2173 <        checkCompletedNormally(h, inc(v1));
2174 <        }
2175 <    }
2176 <
2177 <    public void testApplyToEither_normalCompletion2() {
2178 <        for (ExecutionMode m : ExecutionMode.values())
2179 <        for (Integer v1 : new Integer[] { 1, null })
1878 <        for (Integer v2 : new Integer[] { 2, null }) {
1879 <
1880 <        final CompletableFuture<Integer> f = new CompletableFuture<>();
1881 <        final CompletableFuture<Integer> g = new CompletableFuture<>();
1882 <        final IncFunction r = new IncFunction();
1883 <        final CompletableFuture<Integer> h = m.applyToEither(f, g, r);
1884 <
1885 <        g.complete(v2);
1886 <        checkCompletedNormally(h, inc(v2));
1887 <        f.complete(v1);
2171 >        // unspecified behavior - both source completions available
2172 >        final CompletableFuture<Integer> h4 = m.applyToEither(f, g, rs[4]);
2173 >        final CompletableFuture<Integer> h5 = m.applyToEither(g, f, rs[5]);
2174 >        rs[4].assertValue(h4.join());
2175 >        rs[5].assertValue(h5.join());
2176 >        assertTrue(Objects.equals(inc(v1), h4.join()) ||
2177 >                   Objects.equals(inc(v2), h4.join()));
2178 >        assertTrue(Objects.equals(inc(v1), h5.join()) ||
2179 >                   Objects.equals(inc(v2), h5.join()));
2180  
2181          checkCompletedNormally(f, v1);
2182          checkCompletedNormally(g, v2);
2183 <        checkCompletedNormally(h, inc(v2));
2184 <        }
2185 <    }
2186 <    public void testApplyToEither_normalCompletion3() {
2187 <        for (ExecutionMode m : ExecutionMode.values())
2188 <        for (Integer v1 : new Integer[] { 1, null })
1897 <        for (Integer v2 : new Integer[] { 2, null }) {
1898 <
1899 <        final CompletableFuture<Integer> f = new CompletableFuture<>();
1900 <        final CompletableFuture<Integer> g = new CompletableFuture<>();
1901 <        final IncFunction r = new IncFunction();
1902 <
1903 <        f.complete(v1);
1904 <        g.complete(v2);
1905 <        final CompletableFuture<Integer> h = m.applyToEither(f, g, r);
1906 <
1907 <        checkCompletedNormally(f, v1);
1908 <        checkCompletedNormally(g, v2);
1909 <
1910 <        // unspecified behavior
1911 <        assertTrue(Objects.equals(h.join(), inc(v1)) ||
1912 <                   Objects.equals(h.join(), inc(v2)));
1913 <        assertEquals(r.invocationCount, 1);
1914 <        }
1915 <    }
2183 >        checkCompletedNormally(h0, inc(v1));
2184 >        checkCompletedNormally(h1, inc(v1));
2185 >        checkCompletedNormally(h2, inc(v1));
2186 >        checkCompletedNormally(h3, inc(v1));
2187 >        for (int i = 0; i < 4; i++) rs[i].assertValue(inc(v1));
2188 >    }}
2189  
2190      /**
2191       * applyToEither result completes exceptionally after exceptional
2192       * completion of either source
2193       */
2194 <    public void testApplyToEither_exceptionalCompletion1() {
2194 >    public void testApplyToEither_exceptionalCompletion() {
2195          for (ExecutionMode m : ExecutionMode.values())
2196 <        for (Integer v1 : new Integer[] { 1, null }) {
2197 <
2196 >        for (Integer v1 : new Integer[] { 1, null })
2197 >    {
2198          final CompletableFuture<Integer> f = new CompletableFuture<>();
2199          final CompletableFuture<Integer> g = new CompletableFuture<>();
1927        final IncFunction r = new IncFunction();
1928        final CompletableFuture<Integer> h = m.applyToEither(f, g, r);
2200          final CFException ex = new CFException();
2201 +        final IncFunction[] rs = new IncFunction[6];
2202 +        for (int i = 0; i < rs.length; i++) rs[i] = new IncFunction(m);
2203  
2204 +        final CompletableFuture<Integer> h0 = m.applyToEither(f, g, rs[0]);
2205 +        final CompletableFuture<Integer> h1 = m.applyToEither(g, f, rs[1]);
2206 +        checkIncomplete(h0);
2207 +        checkIncomplete(h1);
2208 +        rs[0].assertNotInvoked();
2209 +        rs[1].assertNotInvoked();
2210          f.completeExceptionally(ex);
2211 <        checkCompletedWithWrappedCFException(h, ex);
2211 >        checkCompletedWithWrappedException(h0, ex);
2212 >        checkCompletedWithWrappedException(h1, ex);
2213 >        final CompletableFuture<Integer> h2 = m.applyToEither(f, g, rs[2]);
2214 >        final CompletableFuture<Integer> h3 = m.applyToEither(g, f, rs[3]);
2215 >        checkCompletedWithWrappedException(h2, ex);
2216 >        checkCompletedWithWrappedException(h3, ex);
2217          g.complete(v1);
2218  
2219 <        assertEquals(r.invocationCount, 0);
2220 <        checkCompletedNormally(g, v1);
2221 <        checkCompletedWithWrappedCFException(f, ex);
2222 <        checkCompletedWithWrappedCFException(h, ex);
2223 <        }
2224 <    }
2225 <
2226 <    public void testApplyToEither_exceptionalCompletion2() {
2227 <        for (ExecutionMode m : ExecutionMode.values())
1944 <        for (Integer v1 : new Integer[] { 1, null }) {
1945 <
1946 <        final CompletableFuture<Integer> f = new CompletableFuture<>();
1947 <        final CompletableFuture<Integer> g = new CompletableFuture<>();
1948 <        final IncFunction r = new IncFunction();
1949 <        final CompletableFuture<Integer> h = m.applyToEither(f, g, r);
1950 <        final CFException ex = new CFException();
1951 <
1952 <        g.completeExceptionally(ex);
1953 <        checkCompletedWithWrappedCFException(h, ex);
1954 <        f.complete(v1);
1955 <
1956 <        assertEquals(r.invocationCount, 0);
1957 <        checkCompletedNormally(f, v1);
1958 <        checkCompletedWithWrappedCFException(g, ex);
1959 <        checkCompletedWithWrappedCFException(h, ex);
2219 >        // unspecified behavior - both source completions available
2220 >        final CompletableFuture<Integer> h4 = m.applyToEither(f, g, rs[4]);
2221 >        final CompletableFuture<Integer> h5 = m.applyToEither(g, f, rs[5]);
2222 >        try {
2223 >            assertEquals(inc(v1), h4.join());
2224 >            rs[4].assertValue(inc(v1));
2225 >        } catch (CompletionException ok) {
2226 >            checkCompletedWithWrappedException(h4, ex);
2227 >            rs[4].assertNotInvoked();
2228          }
1961    }
1962
1963    public void testApplyToEither_exceptionalCompletion3() {
1964        for (ExecutionMode m : ExecutionMode.values())
1965        for (Integer v1 : new Integer[] { 1, null }) {
1966
1967        final CompletableFuture<Integer> f = new CompletableFuture<>();
1968        final CompletableFuture<Integer> g = new CompletableFuture<>();
1969        final IncFunction r = new IncFunction();
1970        final CFException ex = new CFException();
1971
1972        g.completeExceptionally(ex);
1973        f.complete(v1);
1974        final CompletableFuture<Integer> h = m.applyToEither(f, g, r);
1975
1976        // unspecified behavior
1977        Integer v;
2229          try {
2230 <            assertEquals(h.join(), inc(v1));
2231 <            assertEquals(r.invocationCount, 1);
2230 >            assertEquals(inc(v1), h5.join());
2231 >            rs[5].assertValue(inc(v1));
2232          } catch (CompletionException ok) {
2233 <            checkCompletedWithWrappedCFException(h, ex);
2234 <            assertEquals(r.invocationCount, 0);
2233 >            checkCompletedWithWrappedException(h5, ex);
2234 >            rs[5].assertNotInvoked();
2235          }
2236  
2237 <        checkCompletedWithWrappedCFException(g, ex);
2238 <        checkCompletedNormally(f, v1);
2239 <        }
2240 <    }
2237 >        checkCompletedExceptionally(f, ex);
2238 >        checkCompletedNormally(g, v1);
2239 >        checkCompletedWithWrappedException(h0, ex);
2240 >        checkCompletedWithWrappedException(h1, ex);
2241 >        checkCompletedWithWrappedException(h2, ex);
2242 >        checkCompletedWithWrappedException(h3, ex);
2243 >        checkCompletedWithWrappedException(h4, ex);
2244 >        for (int i = 0; i < 4; i++) rs[i].assertNotInvoked();
2245 >    }}
2246  
2247 <    public void testApplyToEither_exceptionalCompletion4() {
2247 >    public void testApplyToEither_exceptionalCompletion2() {
2248          for (ExecutionMode m : ExecutionMode.values())
2249 <        for (Integer v1 : new Integer[] { 1, null }) {
2250 <
2249 >        for (boolean fFirst : new boolean[] { true, false })
2250 >        for (Integer v1 : new Integer[] { 1, null })
2251 >    {
2252          final CompletableFuture<Integer> f = new CompletableFuture<>();
2253          final CompletableFuture<Integer> g = new CompletableFuture<>();
1997        final IncFunction r = new IncFunction();
2254          final CFException ex = new CFException();
2255 +        final IncFunction[] rs = new IncFunction[6];
2256 +        for (int i = 0; i < rs.length; i++) rs[i] = new IncFunction(m);
2257  
2258 <        f.completeExceptionally(ex);
2259 <        g.complete(v1);
2260 <        final CompletableFuture<Integer> h = m.applyToEither(f, g, r);
2258 >        final CompletableFuture<Integer> h0 = m.applyToEither(f, g, rs[0]);
2259 >        final CompletableFuture<Integer> h1 = m.applyToEither(g, f, rs[1]);
2260 >        assertTrue(fFirst ? f.complete(v1) : g.completeExceptionally(ex));
2261 >        assertTrue(!fFirst ? f.complete(v1) : g.completeExceptionally(ex));
2262 >        final CompletableFuture<Integer> h2 = m.applyToEither(f, g, rs[2]);
2263 >        final CompletableFuture<Integer> h3 = m.applyToEither(g, f, rs[3]);
2264  
2265 <        // unspecified behavior
2005 <        Integer v;
2265 >        // unspecified behavior - both source completions available
2266          try {
2267 <            assertEquals(h.join(), inc(v1));
2268 <            assertEquals(r.invocationCount, 1);
2267 >            assertEquals(inc(v1), h0.join());
2268 >            rs[0].assertValue(inc(v1));
2269          } catch (CompletionException ok) {
2270 <            checkCompletedWithWrappedCFException(h, ex);
2271 <            assertEquals(r.invocationCount, 0);
2270 >            checkCompletedWithWrappedException(h0, ex);
2271 >            rs[0].assertNotInvoked();
2272          }
2273 <
2274 <        checkCompletedWithWrappedCFException(f, ex);
2275 <        checkCompletedNormally(g, v1);
2273 >        try {
2274 >            assertEquals(inc(v1), h1.join());
2275 >            rs[1].assertValue(inc(v1));
2276 >        } catch (CompletionException ok) {
2277 >            checkCompletedWithWrappedException(h1, ex);
2278 >            rs[1].assertNotInvoked();
2279          }
2280 <    }
2281 <
2282 <    /**
2283 <     * applyToEither result completes exceptionally if action does
2284 <     */
2285 <    public void testApplyToEither_actionFailed1() {
2286 <        for (ExecutionMode m : ExecutionMode.values())
2287 <        for (Integer v1 : new Integer[] { 1, null })
2288 <        for (Integer v2 : new Integer[] { 2, null }) {
2289 <
2290 <        final CompletableFuture<Integer> f = new CompletableFuture<>();
2291 <        final CompletableFuture<Integer> g = new CompletableFuture<>();
2292 <        final FailingFunction r = new FailingFunction();
2030 <        final CompletableFuture<Integer> h = m.applyToEither(f, g, r);
2031 <
2032 <        f.complete(v1);
2033 <        checkCompletedWithWrappedCFException(h);
2034 <        g.complete(v2);
2035 <        checkCompletedNormally(f, v1);
2036 <        checkCompletedNormally(g, v2);
2280 >        try {
2281 >            assertEquals(inc(v1), h2.join());
2282 >            rs[2].assertValue(inc(v1));
2283 >        } catch (CompletionException ok) {
2284 >            checkCompletedWithWrappedException(h2, ex);
2285 >            rs[2].assertNotInvoked();
2286 >        }
2287 >        try {
2288 >            assertEquals(inc(v1), h3.join());
2289 >            rs[3].assertValue(inc(v1));
2290 >        } catch (CompletionException ok) {
2291 >            checkCompletedWithWrappedException(h3, ex);
2292 >            rs[3].assertNotInvoked();
2293          }
2038    }
2039
2040    public void testApplyToEither_actionFailed2() {
2041        for (ExecutionMode m : ExecutionMode.values())
2042        for (Integer v1 : new Integer[] { 1, null })
2043        for (Integer v2 : new Integer[] { 2, null }) {
2044
2045        final CompletableFuture<Integer> f = new CompletableFuture<>();
2046        final CompletableFuture<Integer> g = new CompletableFuture<>();
2047        final FailingFunction r = new FailingFunction();
2048        final CompletableFuture<Integer> h = m.applyToEither(f, g, r);
2294  
2050        g.complete(v2);
2051        checkCompletedWithWrappedCFException(h);
2052        f.complete(v1);
2295          checkCompletedNormally(f, v1);
2296 <        checkCompletedNormally(g, v2);
2297 <        }
2056 <    }
2296 >        checkCompletedExceptionally(g, ex);
2297 >    }}
2298  
2299      /**
2300       * applyToEither result completes exceptionally if either source cancelled
2301       */
2302 <    public void testApplyToEither_sourceCancelled1() {
2302 >    public void testApplyToEither_sourceCancelled() {
2303          for (ExecutionMode m : ExecutionMode.values())
2304          for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2305 <        for (Integer v1 : new Integer[] { 1, null }) {
2306 <
2305 >        for (Integer v1 : new Integer[] { 1, null })
2306 >    {
2307          final CompletableFuture<Integer> f = new CompletableFuture<>();
2308          final CompletableFuture<Integer> g = new CompletableFuture<>();
2309 <        final IncFunction r = new IncFunction();
2310 <        final CompletableFuture<Integer> h = m.applyToEither(f, g, r);
2309 >        final IncFunction[] rs = new IncFunction[6];
2310 >        for (int i = 0; i < rs.length; i++) rs[i] = new IncFunction(m);
2311  
2312 <        assertTrue(f.cancel(mayInterruptIfRunning));
2313 <        checkCompletedWithWrappedCancellationException(h);
2312 >        final CompletableFuture<Integer> h0 = m.applyToEither(f, g, rs[0]);
2313 >        final CompletableFuture<Integer> h1 = m.applyToEither(g, f, rs[1]);
2314 >        checkIncomplete(h0);
2315 >        checkIncomplete(h1);
2316 >        rs[0].assertNotInvoked();
2317 >        rs[1].assertNotInvoked();
2318 >        f.cancel(mayInterruptIfRunning);
2319 >        checkCompletedWithWrappedCancellationException(h0);
2320 >        checkCompletedWithWrappedCancellationException(h1);
2321 >        final CompletableFuture<Integer> h2 = m.applyToEither(f, g, rs[2]);
2322 >        final CompletableFuture<Integer> h3 = m.applyToEither(g, f, rs[3]);
2323 >        checkCompletedWithWrappedCancellationException(h2);
2324 >        checkCompletedWithWrappedCancellationException(h3);
2325          g.complete(v1);
2326  
2327 +        // unspecified behavior - both source completions available
2328 +        final CompletableFuture<Integer> h4 = m.applyToEither(f, g, rs[4]);
2329 +        final CompletableFuture<Integer> h5 = m.applyToEither(g, f, rs[5]);
2330 +        try {
2331 +            assertEquals(inc(v1), h4.join());
2332 +            rs[4].assertValue(inc(v1));
2333 +        } catch (CompletionException ok) {
2334 +            checkCompletedWithWrappedCancellationException(h4);
2335 +            rs[4].assertNotInvoked();
2336 +        }
2337 +        try {
2338 +            assertEquals(inc(v1), h5.join());
2339 +            rs[5].assertValue(inc(v1));
2340 +        } catch (CompletionException ok) {
2341 +            checkCompletedWithWrappedCancellationException(h5);
2342 +            rs[5].assertNotInvoked();
2343 +        }
2344 +
2345          checkCancelled(f);
2076        assertEquals(r.invocationCount, 0);
2346          checkCompletedNormally(g, v1);
2347 <        checkCompletedWithWrappedCancellationException(h);
2348 <        }
2349 <    }
2347 >        checkCompletedWithWrappedCancellationException(h0);
2348 >        checkCompletedWithWrappedCancellationException(h1);
2349 >        checkCompletedWithWrappedCancellationException(h2);
2350 >        checkCompletedWithWrappedCancellationException(h3);
2351 >        for (int i = 0; i < 4; i++) rs[i].assertNotInvoked();
2352 >    }}
2353  
2354      public void testApplyToEither_sourceCancelled2() {
2355          for (ExecutionMode m : ExecutionMode.values())
2356          for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2357 <        for (Integer v1 : new Integer[] { 1, null }) {
2358 <
2357 >        for (boolean fFirst : new boolean[] { true, false })
2358 >        for (Integer v1 : new Integer[] { 1, null })
2359 >    {
2360          final CompletableFuture<Integer> f = new CompletableFuture<>();
2361          final CompletableFuture<Integer> g = new CompletableFuture<>();
2362 <        final IncFunction r = new IncFunction();
2363 <        final CompletableFuture<Integer> h = m.applyToEither(f, g, r);
2362 >        final IncFunction[] rs = new IncFunction[6];
2363 >        for (int i = 0; i < rs.length; i++) rs[i] = new IncFunction(m);
2364  
2365 <        assertTrue(g.cancel(mayInterruptIfRunning));
2366 <        checkCompletedWithWrappedCancellationException(h);
2367 <        f.complete(v1);
2365 >        final CompletableFuture<Integer> h0 = m.applyToEither(f, g, rs[0]);
2366 >        final CompletableFuture<Integer> h1 = m.applyToEither(g, f, rs[1]);
2367 >        assertTrue(fFirst ? f.complete(v1) : g.cancel(mayInterruptIfRunning));
2368 >        assertTrue(!fFirst ? f.complete(v1) : g.cancel(mayInterruptIfRunning));
2369 >        final CompletableFuture<Integer> h2 = m.applyToEither(f, g, rs[2]);
2370 >        final CompletableFuture<Integer> h3 = m.applyToEither(g, f, rs[3]);
2371  
2372 <        checkCancelled(g);
2373 <        assertEquals(r.invocationCount, 0);
2374 <        checkCompletedNormally(f, v1);
2375 <        checkCompletedWithWrappedCancellationException(h);
2372 >        // unspecified behavior - both source completions available
2373 >        try {
2374 >            assertEquals(inc(v1), h0.join());
2375 >            rs[0].assertValue(inc(v1));
2376 >        } catch (CompletionException ok) {
2377 >            checkCompletedWithWrappedCancellationException(h0);
2378 >            rs[0].assertNotInvoked();
2379          }
2101    }
2102
2103    public void testApplyToEither_sourceCancelled3() {
2104        for (ExecutionMode m : ExecutionMode.values())
2105        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2106        for (Integer v1 : new Integer[] { 1, null }) {
2107
2108        final CompletableFuture<Integer> f = new CompletableFuture<>();
2109        final CompletableFuture<Integer> g = new CompletableFuture<>();
2110        final IncFunction r = new IncFunction();
2111
2112        assertTrue(g.cancel(mayInterruptIfRunning));
2113        f.complete(v1);
2114        final CompletableFuture<Integer> h = m.applyToEither(f, g, r);
2115
2116        // unspecified behavior
2117        Integer v;
2380          try {
2381 <            assertEquals(h.join(), inc(v1));
2382 <            assertEquals(r.invocationCount, 1);
2381 >            assertEquals(inc(v1), h1.join());
2382 >            rs[1].assertValue(inc(v1));
2383          } catch (CompletionException ok) {
2384 <            checkCompletedWithWrappedCancellationException(h);
2385 <            assertEquals(r.invocationCount, 0);
2384 >            checkCompletedWithWrappedCancellationException(h1);
2385 >            rs[1].assertNotInvoked();
2386          }
2387 <
2388 <        checkCancelled(g);
2389 <        checkCompletedNormally(f, v1);
2387 >        try {
2388 >            assertEquals(inc(v1), h2.join());
2389 >            rs[2].assertValue(inc(v1));
2390 >        } catch (CompletionException ok) {
2391 >            checkCompletedWithWrappedCancellationException(h2);
2392 >            rs[2].assertNotInvoked();
2393          }
2129    }
2130
2131    public void testApplyToEither_sourceCancelled4() {
2132        for (ExecutionMode m : ExecutionMode.values())
2133        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2134        for (Integer v1 : new Integer[] { 1, null }) {
2135
2136        final CompletableFuture<Integer> f = new CompletableFuture<>();
2137        final CompletableFuture<Integer> g = new CompletableFuture<>();
2138        final IncFunction r = new IncFunction();
2139
2140        assertTrue(f.cancel(mayInterruptIfRunning));
2141        g.complete(v1);
2142        final CompletableFuture<Integer> h = m.applyToEither(f, g, r);
2143
2144        // unspecified behavior
2145        Integer v;
2394          try {
2395 <            assertEquals(h.join(), inc(v1));
2396 <            assertEquals(r.invocationCount, 1);
2395 >            assertEquals(inc(v1), h3.join());
2396 >            rs[3].assertValue(inc(v1));
2397          } catch (CompletionException ok) {
2398 <            checkCompletedWithWrappedCancellationException(h);
2399 <            assertEquals(r.invocationCount, 0);
2398 >            checkCompletedWithWrappedCancellationException(h3);
2399 >            rs[3].assertNotInvoked();
2400          }
2401  
2402 <        checkCancelled(f);
2403 <        checkCompletedNormally(g, v1);
2404 <        }
2157 <    }
2402 >        checkCompletedNormally(f, v1);
2403 >        checkCancelled(g);
2404 >    }}
2405  
2406      /**
2407 <     * acceptEither result completes normally after normal completion
2161 <     * of either source
2407 >     * applyToEither result completes exceptionally if action does
2408       */
2409 <    public void testAcceptEither_normalCompletion1() {
2409 >    public void testApplyToEither_actionFailed() {
2410          for (ExecutionMode m : ExecutionMode.values())
2411          for (Integer v1 : new Integer[] { 1, null })
2412 <        for (Integer v2 : new Integer[] { 2, null }) {
2413 <
2412 >        for (Integer v2 : new Integer[] { 2, null })
2413 >    {
2414          final CompletableFuture<Integer> f = new CompletableFuture<>();
2415          final CompletableFuture<Integer> g = new CompletableFuture<>();
2416 <        final IncAction r = new IncAction();
2417 <        final CompletableFuture<Void> h = m.acceptEither(f, g, r);
2416 >        final FailingFunction[] rs = new FailingFunction[6];
2417 >        for (int i = 0; i < rs.length; i++) rs[i] = new FailingFunction(m);
2418  
2419 +        final CompletableFuture<Integer> h0 = m.applyToEither(f, g, rs[0]);
2420 +        final CompletableFuture<Integer> h1 = m.applyToEither(g, f, rs[1]);
2421          f.complete(v1);
2422 <        checkCompletedNormally(h, null);
2423 <        assertEquals(r.value, inc(v1));
2424 <        g.complete(v2);
2425 <
2426 <        checkCompletedNormally(f, v1);
2427 <        checkCompletedNormally(g, v2);
2428 <        checkCompletedNormally(h, null);
2181 <        }
2182 <    }
2422 >        final CompletableFuture<Integer> h2 = m.applyToEither(f, g, rs[2]);
2423 >        final CompletableFuture<Integer> h3 = m.applyToEither(g, f, rs[3]);
2424 >        checkCompletedWithWrappedCFException(h0);
2425 >        checkCompletedWithWrappedCFException(h1);
2426 >        checkCompletedWithWrappedCFException(h2);
2427 >        checkCompletedWithWrappedCFException(h3);
2428 >        for (int i = 0; i < 4; i++) rs[i].assertValue(v1);
2429  
2430 <    public void testAcceptEither_normalCompletion2() {
2185 <        for (ExecutionMode m : ExecutionMode.values())
2186 <        for (Integer v1 : new Integer[] { 1, null })
2187 <        for (Integer v2 : new Integer[] { 2, null }) {
2430 >        g.complete(v2);
2431  
2432 <        final CompletableFuture<Integer> f = new CompletableFuture<>();
2433 <        final CompletableFuture<Integer> g = new CompletableFuture<>();
2434 <        final IncAction r = new IncAction();
2192 <        final CompletableFuture<Void> h = m.acceptEither(f, g, r);
2432 >        // unspecified behavior - both source completions available
2433 >        final CompletableFuture<Integer> h4 = m.applyToEither(f, g, rs[4]);
2434 >        final CompletableFuture<Integer> h5 = m.applyToEither(g, f, rs[5]);
2435  
2436 <        g.complete(v2);
2437 <        checkCompletedNormally(h, null);
2438 <        assertEquals(r.value, inc(v2));
2439 <        f.complete(v1);
2436 >        checkCompletedWithWrappedCFException(h4);
2437 >        assertTrue(Objects.equals(v1, rs[4].value) ||
2438 >                   Objects.equals(v2, rs[4].value));
2439 >        checkCompletedWithWrappedCFException(h5);
2440 >        assertTrue(Objects.equals(v1, rs[5].value) ||
2441 >                   Objects.equals(v2, rs[5].value));
2442  
2443          checkCompletedNormally(f, v1);
2444          checkCompletedNormally(g, v2);
2445 <        checkCompletedNormally(h, null);
2446 <        }
2447 <    }
2448 <    public void testAcceptEither_normalCompletion3() {
2445 >    }}
2446 >
2447 >    /**
2448 >     * acceptEither result completes normally after normal completion
2449 >     * of either source
2450 >     */
2451 >    public void testAcceptEither_normalCompletion() {
2452          for (ExecutionMode m : ExecutionMode.values())
2453          for (Integer v1 : new Integer[] { 1, null })
2454 <        for (Integer v2 : new Integer[] { 2, null }) {
2455 <
2454 >        for (Integer v2 : new Integer[] { 2, null })
2455 >    {
2456          final CompletableFuture<Integer> f = new CompletableFuture<>();
2457          final CompletableFuture<Integer> g = new CompletableFuture<>();
2458 <        final IncAction r = new IncAction();
2459 <
2460 <        f.complete(v1);
2461 <        g.complete(v2);
2462 <        final CompletableFuture<Void> h = m.acceptEither(f, g, r);
2458 >        final NoopConsumer[] rs = new NoopConsumer[6];
2459 >        for (int i = 0; i < rs.length; i++) rs[i] = new NoopConsumer(m);
2460 >
2461 >        final CompletableFuture<Void> h0 = m.acceptEither(f, g, rs[0]);
2462 >        final CompletableFuture<Void> h1 = m.acceptEither(g, f, rs[1]);
2463 >        checkIncomplete(h0);
2464 >        checkIncomplete(h1);
2465 >        rs[0].assertNotInvoked();
2466 >        rs[1].assertNotInvoked();
2467 >        f.complete(v1);
2468 >        checkCompletedNormally(h0, null);
2469 >        checkCompletedNormally(h1, null);
2470 >        rs[0].assertValue(v1);
2471 >        rs[1].assertValue(v1);
2472 >        final CompletableFuture<Void> h2 = m.acceptEither(f, g, rs[2]);
2473 >        final CompletableFuture<Void> h3 = m.acceptEither(g, f, rs[3]);
2474 >        checkCompletedNormally(h2, null);
2475 >        checkCompletedNormally(h3, null);
2476 >        rs[2].assertValue(v1);
2477 >        rs[3].assertValue(v1);
2478 >        g.complete(v2);
2479 >
2480 >        // unspecified behavior - both source completions available
2481 >        final CompletableFuture<Void> h4 = m.acceptEither(f, g, rs[4]);
2482 >        final CompletableFuture<Void> h5 = m.acceptEither(g, f, rs[5]);
2483 >        checkCompletedNormally(h4, null);
2484 >        checkCompletedNormally(h5, null);
2485 >        assertTrue(Objects.equals(v1, rs[4].value) ||
2486 >                   Objects.equals(v2, rs[4].value));
2487 >        assertTrue(Objects.equals(v1, rs[5].value) ||
2488 >                   Objects.equals(v2, rs[5].value));
2489  
2217        checkCompletedNormally(h, null);
2490          checkCompletedNormally(f, v1);
2491          checkCompletedNormally(g, v2);
2492 <
2493 <        // unspecified behavior
2494 <        assertTrue(Objects.equals(r.value, inc(v1)) ||
2495 <                   Objects.equals(r.value, inc(v2)));
2496 <        }
2497 <    }
2492 >        checkCompletedNormally(h0, null);
2493 >        checkCompletedNormally(h1, null);
2494 >        checkCompletedNormally(h2, null);
2495 >        checkCompletedNormally(h3, null);
2496 >        for (int i = 0; i < 4; i++) rs[i].assertValue(v1);
2497 >    }}
2498  
2499      /**
2500       * acceptEither result completes exceptionally after exceptional
2501       * completion of either source
2502       */
2503 <    public void testAcceptEither_exceptionalCompletion1() {
2503 >    public void testAcceptEither_exceptionalCompletion() {
2504          for (ExecutionMode m : ExecutionMode.values())
2505 <        for (Integer v1 : new Integer[] { 1, null }) {
2506 <
2505 >        for (Integer v1 : new Integer[] { 1, null })
2506 >    {
2507          final CompletableFuture<Integer> f = new CompletableFuture<>();
2508          final CompletableFuture<Integer> g = new CompletableFuture<>();
2237        final IncAction r = new IncAction();
2238        final CompletableFuture<Void> h = m.acceptEither(f, g, r);
2509          final CFException ex = new CFException();
2510 +        final NoopConsumer[] rs = new NoopConsumer[6];
2511 +        for (int i = 0; i < rs.length; i++) rs[i] = new NoopConsumer(m);
2512  
2513 +        final CompletableFuture<Void> h0 = m.acceptEither(f, g, rs[0]);
2514 +        final CompletableFuture<Void> h1 = m.acceptEither(g, f, rs[1]);
2515 +        checkIncomplete(h0);
2516 +        checkIncomplete(h1);
2517 +        rs[0].assertNotInvoked();
2518 +        rs[1].assertNotInvoked();
2519          f.completeExceptionally(ex);
2520 <        checkCompletedWithWrappedCFException(h, ex);
2521 <        g.complete(v1);
2522 <
2523 <        assertEquals(r.invocationCount, 0);
2524 <        checkCompletedNormally(g, v1);
2525 <        checkCompletedWithWrappedCFException(f, ex);
2248 <        checkCompletedWithWrappedCFException(h, ex);
2249 <        }
2250 <    }
2251 <
2252 <    public void testAcceptEither_exceptionalCompletion2() {
2253 <        for (ExecutionMode m : ExecutionMode.values())
2254 <        for (Integer v1 : new Integer[] { 1, null }) {
2255 <
2256 <        final CompletableFuture<Integer> f = new CompletableFuture<>();
2257 <        final CompletableFuture<Integer> g = new CompletableFuture<>();
2258 <        final IncAction r = new IncAction();
2259 <        final CompletableFuture<Void> h = m.acceptEither(f, g, r);
2260 <        final CFException ex = new CFException();
2520 >        checkCompletedWithWrappedException(h0, ex);
2521 >        checkCompletedWithWrappedException(h1, ex);
2522 >        final CompletableFuture<Void> h2 = m.acceptEither(f, g, rs[2]);
2523 >        final CompletableFuture<Void> h3 = m.acceptEither(g, f, rs[3]);
2524 >        checkCompletedWithWrappedException(h2, ex);
2525 >        checkCompletedWithWrappedException(h3, ex);
2526  
2527 <        g.completeExceptionally(ex);
2263 <        checkCompletedWithWrappedCFException(h, ex);
2264 <        f.complete(v1);
2527 >        g.complete(v1);
2528  
2529 <        assertEquals(r.invocationCount, 0);
2530 <        checkCompletedNormally(f, v1);
2531 <        checkCompletedWithWrappedCFException(g, ex);
2532 <        checkCompletedWithWrappedCFException(h, ex);
2529 >        // unspecified behavior - both source completions available
2530 >        final CompletableFuture<Void> h4 = m.acceptEither(f, g, rs[4]);
2531 >        final CompletableFuture<Void> h5 = m.acceptEither(g, f, rs[5]);
2532 >        try {
2533 >            assertNull(h4.join());
2534 >            rs[4].assertValue(v1);
2535 >        } catch (CompletionException ok) {
2536 >            checkCompletedWithWrappedException(h4, ex);
2537 >            rs[4].assertNotInvoked();
2538          }
2271    }
2272
2273    public void testAcceptEither_exceptionalCompletion3() {
2274        for (ExecutionMode m : ExecutionMode.values())
2275        for (Integer v1 : new Integer[] { 1, null }) {
2276
2277        final CompletableFuture<Integer> f = new CompletableFuture<>();
2278        final CompletableFuture<Integer> g = new CompletableFuture<>();
2279        final IncAction r = new IncAction();
2280        final CFException ex = new CFException();
2281
2282        g.completeExceptionally(ex);
2283        f.complete(v1);
2284        final CompletableFuture<Void> h = m.acceptEither(f, g, r);
2285
2286        // unspecified behavior
2287        Integer v;
2539          try {
2540 <            assertEquals(h.join(), null);
2541 <            assertEquals(r.invocationCount, 1);
2291 <            assertEquals(inc(v1), r.value);
2540 >            assertNull(h5.join());
2541 >            rs[5].assertValue(v1);
2542          } catch (CompletionException ok) {
2543 <            checkCompletedWithWrappedCFException(h, ex);
2544 <            assertEquals(r.invocationCount, 0);
2543 >            checkCompletedWithWrappedException(h5, ex);
2544 >            rs[5].assertNotInvoked();
2545          }
2546  
2547 <        checkCompletedWithWrappedCFException(g, ex);
2548 <        checkCompletedNormally(f, v1);
2549 <        }
2550 <    }
2547 >        checkCompletedExceptionally(f, ex);
2548 >        checkCompletedNormally(g, v1);
2549 >        checkCompletedWithWrappedException(h0, ex);
2550 >        checkCompletedWithWrappedException(h1, ex);
2551 >        checkCompletedWithWrappedException(h2, ex);
2552 >        checkCompletedWithWrappedException(h3, ex);
2553 >        checkCompletedWithWrappedException(h4, ex);
2554 >        for (int i = 0; i < 4; i++) rs[i].assertNotInvoked();
2555 >    }}
2556  
2557 <    public void testAcceptEither_exceptionalCompletion4() {
2557 >    public void testAcceptEither_exceptionalCompletion2() {
2558          for (ExecutionMode m : ExecutionMode.values())
2559 <        for (Integer v1 : new Integer[] { 1, null }) {
2560 <
2559 >        for (boolean fFirst : new boolean[] { true, false })
2560 >        for (Integer v1 : new Integer[] { 1, null })
2561 >    {
2562          final CompletableFuture<Integer> f = new CompletableFuture<>();
2563          final CompletableFuture<Integer> g = new CompletableFuture<>();
2308        final IncAction r = new IncAction();
2564          final CFException ex = new CFException();
2565 +        final NoopConsumer[] rs = new NoopConsumer[6];
2566 +        for (int i = 0; i < rs.length; i++) rs[i] = new NoopConsumer(m);
2567  
2568 <        f.completeExceptionally(ex);
2569 <        g.complete(v1);
2570 <        final CompletableFuture<Void> h = m.acceptEither(f, g, r);
2568 >        final CompletableFuture<Void> h0 = m.acceptEither(f, g, rs[0]);
2569 >        final CompletableFuture<Void> h1 = m.acceptEither(g, f, rs[1]);
2570 >        assertTrue(fFirst ? f.complete(v1) : g.completeExceptionally(ex));
2571 >        assertTrue(!fFirst ? f.complete(v1) : g.completeExceptionally(ex));
2572 >        final CompletableFuture<Void> h2 = m.acceptEither(f, g, rs[2]);
2573 >        final CompletableFuture<Void> h3 = m.acceptEither(g, f, rs[3]);
2574  
2575 <        // unspecified behavior
2316 <        Integer v;
2575 >        // unspecified behavior - both source completions available
2576          try {
2577 <            assertEquals(h.join(), null);
2578 <            assertEquals(r.invocationCount, 1);
2320 <            assertEquals(inc(v1), r.value);
2577 >            assertEquals(null, h0.join());
2578 >            rs[0].assertValue(v1);
2579          } catch (CompletionException ok) {
2580 <            checkCompletedWithWrappedCFException(h, ex);
2581 <            assertEquals(r.invocationCount, 0);
2580 >            checkCompletedWithWrappedException(h0, ex);
2581 >            rs[0].assertNotInvoked();
2582          }
2583 <
2584 <        checkCompletedWithWrappedCFException(f, ex);
2585 <        checkCompletedNormally(g, v1);
2583 >        try {
2584 >            assertEquals(null, h1.join());
2585 >            rs[1].assertValue(v1);
2586 >        } catch (CompletionException ok) {
2587 >            checkCompletedWithWrappedException(h1, ex);
2588 >            rs[1].assertNotInvoked();
2589          }
2590 <    }
2591 <
2592 <    /**
2593 <     * acceptEither result completes exceptionally if action does
2594 <     */
2595 <    public void testAcceptEither_actionFailed1() {
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 r = new FailingConsumer();
2342 <        final CompletableFuture<Void> h = m.acceptEither(f, g, r);
2343 <
2344 <        f.complete(v1);
2345 <        checkCompletedWithWrappedCFException(h);
2346 <        g.complete(v2);
2347 <        checkCompletedNormally(f, v1);
2348 <        checkCompletedNormally(g, v2);
2590 >        try {
2591 >            assertEquals(null, h2.join());
2592 >            rs[2].assertValue(v1);
2593 >        } catch (CompletionException ok) {
2594 >            checkCompletedWithWrappedException(h2, ex);
2595 >            rs[2].assertNotInvoked();
2596 >        }
2597 >        try {
2598 >            assertEquals(null, h3.join());
2599 >            rs[3].assertValue(v1);
2600 >        } catch (CompletionException ok) {
2601 >            checkCompletedWithWrappedException(h3, ex);
2602 >            rs[3].assertNotInvoked();
2603          }
2350    }
2351
2352    public void testAcceptEither_actionFailed2() {
2353        for (ExecutionMode m : ExecutionMode.values())
2354        for (Integer v1 : new Integer[] { 1, null })
2355        for (Integer v2 : new Integer[] { 2, null }) {
2356
2357        final CompletableFuture<Integer> f = new CompletableFuture<>();
2358        final CompletableFuture<Integer> g = new CompletableFuture<>();
2359        final FailingConsumer r = new FailingConsumer();
2360        final CompletableFuture<Void> h = m.acceptEither(f, g, r);
2604  
2362        g.complete(v2);
2363        checkCompletedWithWrappedCFException(h);
2364        f.complete(v1);
2605          checkCompletedNormally(f, v1);
2606 <        checkCompletedNormally(g, v2);
2607 <        }
2368 <    }
2606 >        checkCompletedExceptionally(g, ex);
2607 >    }}
2608  
2609      /**
2610       * acceptEither result completes exceptionally if either source cancelled
2611       */
2612 <    public void testAcceptEither_sourceCancelled1() {
2612 >    public void testAcceptEither_sourceCancelled() {
2613          for (ExecutionMode m : ExecutionMode.values())
2614          for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2615 <        for (Integer v1 : new Integer[] { 1, null }) {
2616 <
2378 <        final CompletableFuture<Integer> f = new CompletableFuture<>();
2379 <        final CompletableFuture<Integer> g = new CompletableFuture<>();
2380 <        final IncAction r = new IncAction();
2381 <        final CompletableFuture<Void> h = m.acceptEither(f, g, r);
2382 <
2383 <        assertTrue(f.cancel(mayInterruptIfRunning));
2384 <        checkCompletedWithWrappedCancellationException(h);
2385 <        g.complete(v1);
2386 <
2387 <        checkCancelled(f);
2388 <        assertEquals(r.invocationCount, 0);
2389 <        checkCompletedNormally(g, v1);
2390 <        checkCompletedWithWrappedCancellationException(h);
2391 <        }
2392 <    }
2393 <
2394 <    public void testAcceptEither_sourceCancelled2() {
2395 <        for (ExecutionMode m : ExecutionMode.values())
2396 <        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2397 <        for (Integer v1 : new Integer[] { 1, null }) {
2398 <
2615 >        for (Integer v1 : new Integer[] { 1, null })
2616 >    {
2617          final CompletableFuture<Integer> f = new CompletableFuture<>();
2618          final CompletableFuture<Integer> g = new CompletableFuture<>();
2619 <        final IncAction r = new IncAction();
2620 <        final CompletableFuture<Void> h = m.acceptEither(f, g, r);
2403 <
2404 <        assertTrue(g.cancel(mayInterruptIfRunning));
2405 <        checkCompletedWithWrappedCancellationException(h);
2406 <        f.complete(v1);
2407 <
2408 <        checkCancelled(g);
2409 <        assertEquals(r.invocationCount, 0);
2410 <        checkCompletedNormally(f, v1);
2411 <        checkCompletedWithWrappedCancellationException(h);
2412 <        }
2413 <    }
2414 <
2415 <    public void testAcceptEither_sourceCancelled3() {
2416 <        for (ExecutionMode m : ExecutionMode.values())
2417 <        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2418 <        for (Integer v1 : new Integer[] { 1, null }) {
2619 >        final NoopConsumer[] rs = new NoopConsumer[6];
2620 >        for (int i = 0; i < rs.length; i++) rs[i] = new NoopConsumer(m);
2621  
2622 <        final CompletableFuture<Integer> f = new CompletableFuture<>();
2623 <        final CompletableFuture<Integer> g = new CompletableFuture<>();
2624 <        final IncAction r = new IncAction();
2622 >        final CompletableFuture<Void> h0 = m.acceptEither(f, g, rs[0]);
2623 >        final CompletableFuture<Void> h1 = m.acceptEither(g, f, rs[1]);
2624 >        checkIncomplete(h0);
2625 >        checkIncomplete(h1);
2626 >        rs[0].assertNotInvoked();
2627 >        rs[1].assertNotInvoked();
2628 >        f.cancel(mayInterruptIfRunning);
2629 >        checkCompletedWithWrappedCancellationException(h0);
2630 >        checkCompletedWithWrappedCancellationException(h1);
2631 >        final CompletableFuture<Void> h2 = m.acceptEither(f, g, rs[2]);
2632 >        final CompletableFuture<Void> h3 = m.acceptEither(g, f, rs[3]);
2633 >        checkCompletedWithWrappedCancellationException(h2);
2634 >        checkCompletedWithWrappedCancellationException(h3);
2635  
2636 <        assertTrue(g.cancel(mayInterruptIfRunning));
2425 <        f.complete(v1);
2426 <        final CompletableFuture<Void> h = m.acceptEither(f, g, r);
2636 >        g.complete(v1);
2637  
2638 <        // unspecified behavior
2639 <        Integer v;
2638 >        // unspecified behavior - both source completions available
2639 >        final CompletableFuture<Void> h4 = m.acceptEither(f, g, rs[4]);
2640 >        final CompletableFuture<Void> h5 = m.acceptEither(g, f, rs[5]);
2641          try {
2642 <            assertEquals(h.join(), null);
2643 <            assertEquals(r.invocationCount, 1);
2433 <            assertEquals(inc(v1), r.value);
2642 >            assertNull(h4.join());
2643 >            rs[4].assertValue(v1);
2644          } catch (CompletionException ok) {
2645 <            checkCompletedWithWrappedCancellationException(h);
2646 <            assertEquals(r.invocationCount, 0);
2437 <        }
2438 <
2439 <        checkCancelled(g);
2440 <        checkCompletedNormally(f, v1);
2645 >            checkCompletedWithWrappedCancellationException(h4);
2646 >            rs[4].assertNotInvoked();
2647          }
2442    }
2443
2444    public void testAcceptEither_sourceCancelled4() {
2445        for (ExecutionMode m : ExecutionMode.values())
2446        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2447        for (Integer v1 : new Integer[] { 1, null }) {
2448
2449        final CompletableFuture<Integer> f = new CompletableFuture<>();
2450        final CompletableFuture<Integer> g = new CompletableFuture<>();
2451        final IncAction r = new IncAction();
2452
2453        assertTrue(f.cancel(mayInterruptIfRunning));
2454        g.complete(v1);
2455        final CompletableFuture<Void> h = m.acceptEither(f, g, r);
2456
2457        // unspecified behavior
2458        Integer v;
2648          try {
2649 <            assertEquals(h.join(), null);
2650 <            assertEquals(r.invocationCount, 1);
2462 <            assertEquals(inc(v1), r.value);
2649 >            assertNull(h5.join());
2650 >            rs[5].assertValue(v1);
2651          } catch (CompletionException ok) {
2652 <            checkCompletedWithWrappedCancellationException(h);
2653 <            assertEquals(r.invocationCount, 0);
2652 >            checkCompletedWithWrappedCancellationException(h5);
2653 >            rs[5].assertNotInvoked();
2654          }
2655  
2656          checkCancelled(f);
2657          checkCompletedNormally(g, v1);
2658 <        }
2659 <    }
2658 >        checkCompletedWithWrappedCancellationException(h0);
2659 >        checkCompletedWithWrappedCancellationException(h1);
2660 >        checkCompletedWithWrappedCancellationException(h2);
2661 >        checkCompletedWithWrappedCancellationException(h3);
2662 >        for (int i = 0; i < 4; i++) rs[i].assertNotInvoked();
2663 >    }}
2664  
2665      /**
2666 <     * runAfterEither result completes normally after normal completion
2475 <     * of either source
2666 >     * acceptEither result completes exceptionally if action does
2667       */
2668 <    public void testRunAfterEither_normalCompletion1() {
2668 >    public void testAcceptEither_actionFailed() {
2669          for (ExecutionMode m : ExecutionMode.values())
2670          for (Integer v1 : new Integer[] { 1, null })
2671 <        for (Integer v2 : new Integer[] { 2, null }) {
2672 <
2671 >        for (Integer v2 : new Integer[] { 2, null })
2672 >    {
2673          final CompletableFuture<Integer> f = new CompletableFuture<>();
2674          final CompletableFuture<Integer> g = new CompletableFuture<>();
2675 <        final Noop r = new Noop();
2676 <        final CompletableFuture<Void> h = m.runAfterEither(f, g, r);
2675 >        final FailingConsumer[] rs = new FailingConsumer[6];
2676 >        for (int i = 0; i < rs.length; i++) rs[i] = new FailingConsumer(m);
2677  
2678 +        final CompletableFuture<Void> h0 = m.acceptEither(f, g, rs[0]);
2679 +        final CompletableFuture<Void> h1 = m.acceptEither(g, f, rs[1]);
2680          f.complete(v1);
2681 <        checkCompletedNormally(h, null);
2682 <        assertEquals(r.invocationCount, 1);
2683 <        g.complete(v2);
2681 >        final CompletableFuture<Void> h2 = m.acceptEither(f, g, rs[2]);
2682 >        final CompletableFuture<Void> h3 = m.acceptEither(g, f, rs[3]);
2683 >        checkCompletedWithWrappedCFException(h0);
2684 >        checkCompletedWithWrappedCFException(h1);
2685 >        checkCompletedWithWrappedCFException(h2);
2686 >        checkCompletedWithWrappedCFException(h3);
2687 >        for (int i = 0; i < 4; i++) rs[i].assertValue(v1);
2688  
2689 <        checkCompletedNormally(f, v1);
2493 <        checkCompletedNormally(g, v2);
2494 <        checkCompletedNormally(h, null);
2495 <        assertEquals(r.invocationCount, 1);
2496 <        }
2497 <    }
2498 <
2499 <    public void testRunAfterEither_normalCompletion2() {
2500 <        for (ExecutionMode m : ExecutionMode.values())
2501 <        for (Integer v1 : new Integer[] { 1, null })
2502 <        for (Integer v2 : new Integer[] { 2, null }) {
2689 >        g.complete(v2);
2690  
2691 <        final CompletableFuture<Integer> f = new CompletableFuture<>();
2692 <        final CompletableFuture<Integer> g = new CompletableFuture<>();
2693 <        final Noop r = new Noop();
2507 <        final CompletableFuture<Void> h = m.runAfterEither(f, g, r);
2691 >        // unspecified behavior - both source completions available
2692 >        final CompletableFuture<Void> h4 = m.acceptEither(f, g, rs[4]);
2693 >        final CompletableFuture<Void> h5 = m.acceptEither(g, f, rs[5]);
2694  
2695 <        g.complete(v2);
2696 <        checkCompletedNormally(h, null);
2697 <        assertEquals(r.invocationCount, 1);
2698 <        f.complete(v1);
2695 >        checkCompletedWithWrappedCFException(h4);
2696 >        assertTrue(Objects.equals(v1, rs[4].value) ||
2697 >                   Objects.equals(v2, rs[4].value));
2698 >        checkCompletedWithWrappedCFException(h5);
2699 >        assertTrue(Objects.equals(v1, rs[5].value) ||
2700 >                   Objects.equals(v2, rs[5].value));
2701  
2702          checkCompletedNormally(f, v1);
2703          checkCompletedNormally(g, v2);
2704 <        checkCompletedNormally(h, null);
2705 <        assertEquals(r.invocationCount, 1);
2706 <        }
2707 <    }
2708 <    public void testRunAfterEither_normalCompletion3() {
2704 >    }}
2705 >
2706 >    /**
2707 >     * runAfterEither result completes normally after normal completion
2708 >     * of either source
2709 >     */
2710 >    public void testRunAfterEither_normalCompletion() {
2711          for (ExecutionMode m : ExecutionMode.values())
2712          for (Integer v1 : new Integer[] { 1, null })
2713 <        for (Integer v2 : new Integer[] { 2, null }) {
2714 <
2713 >        for (Integer v2 : new Integer[] { 2, null })
2714 >    {
2715          final CompletableFuture<Integer> f = new CompletableFuture<>();
2716          final CompletableFuture<Integer> g = new CompletableFuture<>();
2717 <        final Noop r = new Noop();
2717 >        final Noop[] rs = new Noop[6];
2718 >        for (int i = 0; i < rs.length; i++) rs[i] = new Noop(m);
2719  
2720 +        final CompletableFuture<Void> h0 = m.runAfterEither(f, g, rs[0]);
2721 +        final CompletableFuture<Void> h1 = m.runAfterEither(g, f, rs[1]);
2722 +        checkIncomplete(h0);
2723 +        checkIncomplete(h1);
2724 +        rs[0].assertNotInvoked();
2725 +        rs[1].assertNotInvoked();
2726          f.complete(v1);
2727 +        checkCompletedNormally(h0, null);
2728 +        checkCompletedNormally(h1, null);
2729 +        rs[0].assertInvoked();
2730 +        rs[1].assertInvoked();
2731 +        final CompletableFuture<Void> h2 = m.runAfterEither(f, g, rs[2]);
2732 +        final CompletableFuture<Void> h3 = m.runAfterEither(g, f, rs[3]);
2733 +        checkCompletedNormally(h2, null);
2734 +        checkCompletedNormally(h3, null);
2735 +        rs[2].assertInvoked();
2736 +        rs[3].assertInvoked();
2737 +
2738          g.complete(v2);
2531        final CompletableFuture<Void> h = m.runAfterEither(f, g, r);
2739  
2740 <        checkCompletedNormally(h, null);
2740 >        final CompletableFuture<Void> h4 = m.runAfterEither(f, g, rs[4]);
2741 >        final CompletableFuture<Void> h5 = m.runAfterEither(g, f, rs[5]);
2742 >
2743          checkCompletedNormally(f, v1);
2744          checkCompletedNormally(g, v2);
2745 <        assertEquals(r.invocationCount, 1);
2746 <        }
2747 <    }
2745 >        checkCompletedNormally(h0, null);
2746 >        checkCompletedNormally(h1, null);
2747 >        checkCompletedNormally(h2, null);
2748 >        checkCompletedNormally(h3, null);
2749 >        checkCompletedNormally(h4, null);
2750 >        checkCompletedNormally(h5, null);
2751 >        for (int i = 0; i < 6; i++) rs[i].assertInvoked();
2752 >    }}
2753  
2754      /**
2755       * runAfterEither result completes exceptionally after exceptional
2756       * completion of either source
2757       */
2758 <    public void testRunAfterEither_exceptionalCompletion1() {
2758 >    public void testRunAfterEither_exceptionalCompletion() {
2759          for (ExecutionMode m : ExecutionMode.values())
2760 <        for (Integer v1 : new Integer[] { 1, null }) {
2761 <
2760 >        for (Integer v1 : new Integer[] { 1, null })
2761 >    {
2762          final CompletableFuture<Integer> f = new CompletableFuture<>();
2763          final CompletableFuture<Integer> g = new CompletableFuture<>();
2550        final Noop r = new Noop();
2551        final CompletableFuture<Void> h = m.runAfterEither(f, g, r);
2764          final CFException ex = new CFException();
2765 +        final Noop[] rs = new Noop[6];
2766 +        for (int i = 0; i < rs.length; i++) rs[i] = new Noop(m);
2767  
2768 <        f.completeExceptionally(ex);
2769 <        checkCompletedWithWrappedCFException(h, ex);
2770 <        g.complete(v1);
2771 <
2772 <        assertEquals(r.invocationCount, 0);
2773 <        checkCompletedNormally(g, v1);
2774 <        checkCompletedWithWrappedCFException(f, ex);
2775 <        checkCompletedWithWrappedCFException(h, ex);
2776 <        }
2777 <    }
2778 <
2779 <    public void testRunAfterEither_exceptionalCompletion2() {
2780 <        for (ExecutionMode m : ExecutionMode.values())
2567 <        for (Integer v1 : new Integer[] { 1, null }) {
2568 <
2569 <        final CompletableFuture<Integer> f = new CompletableFuture<>();
2570 <        final CompletableFuture<Integer> g = new CompletableFuture<>();
2571 <        final Noop r = new Noop();
2572 <        final CompletableFuture<Void> h = m.runAfterEither(f, g, r);
2573 <        final CFException ex = new CFException();
2768 >        final CompletableFuture<Void> h0 = m.runAfterEither(f, g, rs[0]);
2769 >        final CompletableFuture<Void> h1 = m.runAfterEither(g, f, rs[1]);
2770 >        checkIncomplete(h0);
2771 >        checkIncomplete(h1);
2772 >        rs[0].assertNotInvoked();
2773 >        rs[1].assertNotInvoked();
2774 >        assertTrue(f.completeExceptionally(ex));
2775 >        checkCompletedWithWrappedException(h0, ex);
2776 >        checkCompletedWithWrappedException(h1, ex);
2777 >        final CompletableFuture<Void> h2 = m.runAfterEither(f, g, rs[2]);
2778 >        final CompletableFuture<Void> h3 = m.runAfterEither(g, f, rs[3]);
2779 >        checkCompletedWithWrappedException(h2, ex);
2780 >        checkCompletedWithWrappedException(h3, ex);
2781  
2782 <        g.completeExceptionally(ex);
2576 <        checkCompletedWithWrappedCFException(h, ex);
2577 <        f.complete(v1);
2782 >        assertTrue(g.complete(v1));
2783  
2784 <        assertEquals(r.invocationCount, 0);
2785 <        checkCompletedNormally(f, v1);
2786 <        checkCompletedWithWrappedCFException(g, ex);
2787 <        checkCompletedWithWrappedCFException(h, ex);
2784 >        // unspecified behavior - both source completions available
2785 >        final CompletableFuture<Void> h4 = m.runAfterEither(f, g, rs[4]);
2786 >        final CompletableFuture<Void> h5 = m.runAfterEither(g, f, rs[5]);
2787 >        try {
2788 >            assertNull(h4.join());
2789 >            rs[4].assertInvoked();
2790 >        } catch (CompletionException ok) {
2791 >            checkCompletedWithWrappedException(h4, ex);
2792 >            rs[4].assertNotInvoked();
2793          }
2584    }
2585
2586    public void testRunAfterEither_exceptionalCompletion3() {
2587        for (ExecutionMode m : ExecutionMode.values())
2588        for (Integer v1 : new Integer[] { 1, null }) {
2589
2590        final CompletableFuture<Integer> f = new CompletableFuture<>();
2591        final CompletableFuture<Integer> g = new CompletableFuture<>();
2592        final Noop r = new Noop();
2593        final CFException ex = new CFException();
2594
2595        g.completeExceptionally(ex);
2596        f.complete(v1);
2597        final CompletableFuture<Void> h = m.runAfterEither(f, g, r);
2598
2599        // unspecified behavior
2600        Integer v;
2794          try {
2795 <            assertEquals(h.join(), null);
2796 <            assertEquals(r.invocationCount, 1);
2795 >            assertNull(h5.join());
2796 >            rs[5].assertInvoked();
2797          } catch (CompletionException ok) {
2798 <            checkCompletedWithWrappedCFException(h, ex);
2799 <            assertEquals(r.invocationCount, 0);
2798 >            checkCompletedWithWrappedException(h5, ex);
2799 >            rs[5].assertNotInvoked();
2800          }
2801  
2802 <        checkCompletedWithWrappedCFException(g, ex);
2803 <        checkCompletedNormally(f, v1);
2804 <        }
2805 <    }
2802 >        checkCompletedExceptionally(f, ex);
2803 >        checkCompletedNormally(g, v1);
2804 >        checkCompletedWithWrappedException(h0, ex);
2805 >        checkCompletedWithWrappedException(h1, ex);
2806 >        checkCompletedWithWrappedException(h2, ex);
2807 >        checkCompletedWithWrappedException(h3, ex);
2808 >        checkCompletedWithWrappedException(h4, ex);
2809 >        for (int i = 0; i < 4; i++) rs[i].assertNotInvoked();
2810 >    }}
2811  
2812 <    public void testRunAfterEither_exceptionalCompletion4() {
2812 >    public void testRunAfterEither_exceptionalCompletion2() {
2813          for (ExecutionMode m : ExecutionMode.values())
2814 <        for (Integer v1 : new Integer[] { 1, null }) {
2815 <
2814 >        for (boolean fFirst : new boolean[] { true, false })
2815 >        for (Integer v1 : new Integer[] { 1, null })
2816 >    {
2817          final CompletableFuture<Integer> f = new CompletableFuture<>();
2818          final CompletableFuture<Integer> g = new CompletableFuture<>();
2620        final Noop r = new Noop();
2819          final CFException ex = new CFException();
2820 +        final Noop[] rs = new Noop[6];
2821 +        for (int i = 0; i < rs.length; i++) rs[i] = new Noop(m);
2822  
2823 <        f.completeExceptionally(ex);
2824 <        g.complete(v1);
2825 <        final CompletableFuture<Void> h = m.runAfterEither(f, g, r);
2823 >        final CompletableFuture<Void> h0 = m.runAfterEither(f, g, rs[0]);
2824 >        final CompletableFuture<Void> h1 = m.runAfterEither(g, f, rs[1]);
2825 >        assertTrue( fFirst ? f.complete(v1) : g.completeExceptionally(ex));
2826 >        assertTrue(!fFirst ? f.complete(v1) : g.completeExceptionally(ex));
2827 >        final CompletableFuture<Void> h2 = m.runAfterEither(f, g, rs[2]);
2828 >        final CompletableFuture<Void> h3 = m.runAfterEither(g, f, rs[3]);
2829  
2830 <        // unspecified behavior
2628 <        Integer v;
2830 >        // unspecified behavior - both source completions available
2831          try {
2832 <            assertEquals(h.join(), null);
2833 <            assertEquals(r.invocationCount, 1);
2832 >            assertEquals(null, h0.join());
2833 >            rs[0].assertInvoked();
2834          } catch (CompletionException ok) {
2835 <            checkCompletedWithWrappedCFException(h, ex);
2836 <            assertEquals(r.invocationCount, 0);
2835 >            checkCompletedWithWrappedException(h0, ex);
2836 >            rs[0].assertNotInvoked();
2837          }
2838 <
2839 <        checkCompletedWithWrappedCFException(f, ex);
2840 <        checkCompletedNormally(g, v1);
2838 >        try {
2839 >            assertEquals(null, h1.join());
2840 >            rs[1].assertInvoked();
2841 >        } catch (CompletionException ok) {
2842 >            checkCompletedWithWrappedException(h1, ex);
2843 >            rs[1].assertNotInvoked();
2844          }
2845 <    }
2846 <
2847 <    /**
2848 <     * runAfterEither result completes exceptionally if action does
2849 <     */
2850 <    public void testRunAfterEither_actionFailed1() {
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 FailingNoop r = new FailingNoop();
2653 <        final CompletableFuture<Void> h = m.runAfterEither(f, g, r);
2654 <
2655 <        f.complete(v1);
2656 <        checkCompletedWithWrappedCFException(h);
2657 <        g.complete(v2);
2658 <        checkCompletedNormally(f, v1);
2659 <        checkCompletedNormally(g, v2);
2845 >        try {
2846 >            assertEquals(null, h2.join());
2847 >            rs[2].assertInvoked();
2848 >        } catch (CompletionException ok) {
2849 >            checkCompletedWithWrappedException(h2, ex);
2850 >            rs[2].assertNotInvoked();
2851 >        }
2852 >        try {
2853 >            assertEquals(null, h3.join());
2854 >            rs[3].assertInvoked();
2855 >        } catch (CompletionException ok) {
2856 >            checkCompletedWithWrappedException(h3, ex);
2857 >            rs[3].assertNotInvoked();
2858          }
2661    }
2662
2663    public void testRunAfterEither_actionFailed2() {
2664        for (ExecutionMode m : ExecutionMode.values())
2665        for (Integer v1 : new Integer[] { 1, null })
2666        for (Integer v2 : new Integer[] { 2, null }) {
2667
2668        final CompletableFuture<Integer> f = new CompletableFuture<>();
2669        final CompletableFuture<Integer> g = new CompletableFuture<>();
2670        final FailingNoop r = new FailingNoop();
2671        final CompletableFuture<Void> h = m.runAfterEither(f, g, r);
2859  
2673        g.complete(v2);
2674        checkCompletedWithWrappedCFException(h);
2675        f.complete(v1);
2860          checkCompletedNormally(f, v1);
2861 <        checkCompletedNormally(g, v2);
2862 <        }
2679 <    }
2861 >        checkCompletedExceptionally(g, ex);
2862 >    }}
2863  
2864      /**
2865       * runAfterEither result completes exceptionally if either source cancelled
2866       */
2867 <    public void testRunAfterEither_sourceCancelled1() {
2867 >    public void testRunAfterEither_sourceCancelled() {
2868          for (ExecutionMode m : ExecutionMode.values())
2869          for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2870 <        for (Integer v1 : new Integer[] { 1, null }) {
2871 <
2870 >        for (Integer v1 : new Integer[] { 1, null })
2871 >    {
2872          final CompletableFuture<Integer> f = new CompletableFuture<>();
2873          final CompletableFuture<Integer> g = new CompletableFuture<>();
2874 <        final Noop r = new Noop();
2875 <        final CompletableFuture<Void> h = m.runAfterEither(f, g, r);
2874 >        final Noop[] rs = new Noop[6];
2875 >        for (int i = 0; i < rs.length; i++) rs[i] = new Noop(m);
2876  
2877 <        assertTrue(f.cancel(mayInterruptIfRunning));
2878 <        checkCompletedWithWrappedCancellationException(h);
2879 <        g.complete(v1);
2880 <
2881 <        checkCancelled(f);
2882 <        assertEquals(r.invocationCount, 0);
2883 <        checkCompletedNormally(g, v1);
2884 <        checkCompletedWithWrappedCancellationException(h);
2885 <        }
2886 <    }
2887 <
2888 <    public void testRunAfterEither_sourceCancelled2() {
2889 <        for (ExecutionMode m : ExecutionMode.values())
2707 <        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2708 <        for (Integer v1 : new Integer[] { 1, null }) {
2709 <
2710 <        final CompletableFuture<Integer> f = new CompletableFuture<>();
2711 <        final CompletableFuture<Integer> g = new CompletableFuture<>();
2712 <        final Noop r = new Noop();
2713 <        final CompletableFuture<Void> h = m.runAfterEither(f, g, r);
2877 >        final CompletableFuture<Void> h0 = m.runAfterEither(f, g, rs[0]);
2878 >        final CompletableFuture<Void> h1 = m.runAfterEither(g, f, rs[1]);
2879 >        checkIncomplete(h0);
2880 >        checkIncomplete(h1);
2881 >        rs[0].assertNotInvoked();
2882 >        rs[1].assertNotInvoked();
2883 >        f.cancel(mayInterruptIfRunning);
2884 >        checkCompletedWithWrappedCancellationException(h0);
2885 >        checkCompletedWithWrappedCancellationException(h1);
2886 >        final CompletableFuture<Void> h2 = m.runAfterEither(f, g, rs[2]);
2887 >        final CompletableFuture<Void> h3 = m.runAfterEither(g, f, rs[3]);
2888 >        checkCompletedWithWrappedCancellationException(h2);
2889 >        checkCompletedWithWrappedCancellationException(h3);
2890  
2891 <        assertTrue(g.cancel(mayInterruptIfRunning));
2716 <        checkCompletedWithWrappedCancellationException(h);
2717 <        f.complete(v1);
2891 >        assertTrue(g.complete(v1));
2892  
2893 <        checkCancelled(g);
2894 <        assertEquals(r.invocationCount, 0);
2895 <        checkCompletedNormally(f, v1);
2896 <        checkCompletedWithWrappedCancellationException(h);
2893 >        // unspecified behavior - both source completions available
2894 >        final CompletableFuture<Void> h4 = m.runAfterEither(f, g, rs[4]);
2895 >        final CompletableFuture<Void> h5 = m.runAfterEither(g, f, rs[5]);
2896 >        try {
2897 >            assertNull(h4.join());
2898 >            rs[4].assertInvoked();
2899 >        } catch (CompletionException ok) {
2900 >            checkCompletedWithWrappedCancellationException(h4);
2901 >            rs[4].assertNotInvoked();
2902          }
2724    }
2725
2726    public void testRunAfterEither_sourceCancelled3() {
2727        for (ExecutionMode m : ExecutionMode.values())
2728        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2729        for (Integer v1 : new Integer[] { 1, null }) {
2730
2731        final CompletableFuture<Integer> f = new CompletableFuture<>();
2732        final CompletableFuture<Integer> g = new CompletableFuture<>();
2733        final Noop r = new Noop();
2734
2735        assertTrue(g.cancel(mayInterruptIfRunning));
2736        f.complete(v1);
2737        final CompletableFuture<Void> h = m.runAfterEither(f, g, r);
2738
2739        // unspecified behavior
2740        Integer v;
2903          try {
2904 <            assertEquals(h.join(), null);
2905 <            assertEquals(r.invocationCount, 1);
2904 >            assertNull(h5.join());
2905 >            rs[5].assertInvoked();
2906          } catch (CompletionException ok) {
2907 <            checkCompletedWithWrappedCancellationException(h);
2908 <            assertEquals(r.invocationCount, 0);
2907 >            checkCompletedWithWrappedCancellationException(h5);
2908 >            rs[5].assertNotInvoked();
2909          }
2910  
2911 <        checkCancelled(g);
2912 <        checkCompletedNormally(f, v1);
2913 <        }
2914 <    }
2911 >        checkCancelled(f);
2912 >        checkCompletedNormally(g, v1);
2913 >        checkCompletedWithWrappedCancellationException(h0);
2914 >        checkCompletedWithWrappedCancellationException(h1);
2915 >        checkCompletedWithWrappedCancellationException(h2);
2916 >        checkCompletedWithWrappedCancellationException(h3);
2917 >        for (int i = 0; i < 4; i++) rs[i].assertNotInvoked();
2918 >    }}
2919  
2920 <    public void testRunAfterEither_sourceCancelled4() {
2920 >    /**
2921 >     * runAfterEither result completes exceptionally if action does
2922 >     */
2923 >    public void testRunAfterEither_actionFailed() {
2924          for (ExecutionMode m : ExecutionMode.values())
2925 <        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2926 <        for (Integer v1 : new Integer[] { 1, null }) {
2927 <
2925 >        for (Integer v1 : new Integer[] { 1, null })
2926 >        for (Integer v2 : new Integer[] { 2, null })
2927 >    {
2928          final CompletableFuture<Integer> f = new CompletableFuture<>();
2929          final CompletableFuture<Integer> g = new CompletableFuture<>();
2930 <        final Noop r = new Noop();
2930 >        final FailingRunnable[] rs = new FailingRunnable[6];
2931 >        for (int i = 0; i < rs.length; i++) rs[i] = new FailingRunnable(m);
2932  
2933 <        assertTrue(f.cancel(mayInterruptIfRunning));
2934 <        g.complete(v1);
2935 <        final CompletableFuture<Void> h = m.runAfterEither(f, g, r);
2936 <
2937 <        // unspecified behavior
2938 <        Integer v;
2939 <        try {
2940 <            assertEquals(h.join(), null);
2941 <            assertEquals(r.invocationCount, 1);
2942 <        } catch (CompletionException ok) {
2943 <            checkCompletedWithWrappedCancellationException(h);
2944 <            assertEquals(r.invocationCount, 0);
2945 <        }
2933 >        final CompletableFuture<Void> h0 = m.runAfterEither(f, g, rs[0]);
2934 >        final CompletableFuture<Void> h1 = m.runAfterEither(g, f, rs[1]);
2935 >        assertTrue(f.complete(v1));
2936 >        final CompletableFuture<Void> h2 = m.runAfterEither(f, g, rs[2]);
2937 >        final CompletableFuture<Void> h3 = m.runAfterEither(g, f, rs[3]);
2938 >        checkCompletedWithWrappedCFException(h0);
2939 >        checkCompletedWithWrappedCFException(h1);
2940 >        checkCompletedWithWrappedCFException(h2);
2941 >        checkCompletedWithWrappedCFException(h3);
2942 >        for (int i = 0; i < 4; i++) rs[i].assertInvoked();
2943 >        assertTrue(g.complete(v2));
2944 >        final CompletableFuture<Void> h4 = m.runAfterEither(f, g, rs[4]);
2945 >        final CompletableFuture<Void> h5 = m.runAfterEither(g, f, rs[5]);
2946 >        checkCompletedWithWrappedCFException(h4);
2947 >        checkCompletedWithWrappedCFException(h5);
2948  
2949 <        checkCancelled(f);
2950 <        checkCompletedNormally(g, v1);
2951 <        }
2952 <    }
2949 >        checkCompletedNormally(f, v1);
2950 >        checkCompletedNormally(g, v2);
2951 >        for (int i = 0; i < 6; i++) rs[i].assertInvoked();
2952 >    }}
2953  
2954      /**
2955       * thenCompose result completes normally after normal completion of source
2956       */
2957 <    public void testThenCompose() {
2958 <        CompletableFuture<Integer> f, g;
2959 <        CompletableFutureInc r;
2960 <
2961 <        f = new CompletableFuture<>();
2962 <        g = f.thenCompose(r = new CompletableFutureInc());
2963 <        f.complete(one);
2964 <        checkCompletedNormally(g, two);
2965 <        assertTrue(r.ran);
2957 >    public void testThenCompose_normalCompletion() {
2958 >        for (ExecutionMode m : ExecutionMode.values())
2959 >        for (boolean createIncomplete : new boolean[] { true, false })
2960 >        for (Integer v1 : new Integer[] { 1, null })
2961 >    {
2962 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
2963 >        final CompletableFutureInc r = new CompletableFutureInc(m);
2964 >        if (!createIncomplete) assertTrue(f.complete(v1));
2965 >        final CompletableFuture<Integer> g = m.thenCompose(f, r);
2966 >        if (createIncomplete) assertTrue(f.complete(v1));
2967  
2968 <        f = new CompletableFuture<>();
2969 <        f.complete(one);
2970 <        g = f.thenCompose(r = new CompletableFutureInc());
2971 <        checkCompletedNormally(g, two);
2799 <        assertTrue(r.ran);
2800 <    }
2968 >        checkCompletedNormally(g, inc(v1));
2969 >        checkCompletedNormally(f, v1);
2970 >        r.assertValue(v1);
2971 >    }}
2972  
2973      /**
2974       * thenCompose result completes exceptionally after exceptional
2975       * completion of source
2976       */
2977 <    public void testThenCompose2() {
2978 <        CompletableFuture<Integer> f, g;
2979 <        CompletableFutureInc r;
2980 <
2981 <        f = new CompletableFuture<>();
2982 <        g = f.thenCompose(r = new CompletableFutureInc());
2983 <        f.completeExceptionally(new CFException());
2984 <        checkCompletedWithWrappedCFException(g);
2977 >    public void testThenCompose_exceptionalCompletion() {
2978 >        for (ExecutionMode m : ExecutionMode.values())
2979 >        for (boolean createIncomplete : new boolean[] { true, false })
2980 >    {
2981 >        final CFException ex = new CFException();
2982 >        final CompletableFutureInc r = new CompletableFutureInc(m);
2983 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
2984 >        if (!createIncomplete) f.completeExceptionally(ex);
2985 >        final CompletableFuture<Integer> g = m.thenCompose(f, r);
2986 >        if (createIncomplete) f.completeExceptionally(ex);
2987  
2988 <        f = new CompletableFuture<>();
2989 <        f.completeExceptionally(new CFException());
2990 <        g = f.thenCompose(r = new CompletableFutureInc());
2991 <        checkCompletedWithWrappedCFException(g);
2819 <    }
2988 >        checkCompletedWithWrappedException(g, ex);
2989 >        checkCompletedExceptionally(f, ex);
2990 >        r.assertNotInvoked();
2991 >    }}
2992  
2993      /**
2994       * thenCompose result completes exceptionally if action does
2995       */
2996 <    public void testThenCompose3() {
2997 <        CompletableFuture<Integer> f, g;
2998 <        FailingCompletableFutureFunction r;
2999 <
3000 <        f = new CompletableFuture<>();
3001 <        g = f.thenCompose(r = new FailingCompletableFutureFunction());
3002 <        f.complete(one);
3003 <        checkCompletedWithWrappedCFException(g);
2996 >    public void testThenCompose_actionFailed() {
2997 >        for (ExecutionMode m : ExecutionMode.values())
2998 >        for (boolean createIncomplete : new boolean[] { true, false })
2999 >        for (Integer v1 : new Integer[] { 1, null })
3000 >    {
3001 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
3002 >        final FailingCompletableFutureFunction r
3003 >            = new FailingCompletableFutureFunction(m);
3004 >        if (!createIncomplete) assertTrue(f.complete(v1));
3005 >        final CompletableFuture<Integer> g = m.thenCompose(f, r);
3006 >        if (createIncomplete) assertTrue(f.complete(v1));
3007  
2833        f = new CompletableFuture<>();
2834        f.complete(one);
2835        g = f.thenCompose(r = new FailingCompletableFutureFunction());
3008          checkCompletedWithWrappedCFException(g);
3009 <    }
3009 >        checkCompletedNormally(f, v1);
3010 >    }}
3011  
3012      /**
3013       * thenCompose result completes exceptionally if source cancelled
3014       */
3015 <    public void testThenCompose4() {
3016 <        CompletableFuture<Integer> f, g;
3017 <        CompletableFutureInc r;
3018 <
3019 <        f = new CompletableFuture<>();
3020 <        g = f.thenCompose(r = new CompletableFutureInc());
3021 <        assertTrue(f.cancel(true));
3022 <        checkCompletedWithWrappedCancellationException(g);
3023 <
3024 <        f = new CompletableFuture<>();
3025 <        assertTrue(f.cancel(true));
3026 <        g = f.thenCompose(r = new CompletableFutureInc());
3027 <        checkCompletedWithWrappedCancellationException(g);
2855 <    }
2856 <
2857 <    // asyncs
2858 <
2859 <    /**
2860 <     * thenRunAsync result completes normally after normal completion of source
2861 <     */
2862 <    public void testThenRunAsync() {
2863 <        CompletableFuture<Integer> f = new CompletableFuture<>();
2864 <        Noop r = new Noop();
2865 <        CompletableFuture<Void> g = f.thenRunAsync(r);
2866 <        f.complete(null);
2867 <        checkCompletedNormally(g, null);
2868 <
2869 <        // reordered version
2870 <        f = new CompletableFuture<>();
2871 <        f.complete(null);
2872 <        r = new Noop();
2873 <        g = f.thenRunAsync(r);
2874 <        checkCompletedNormally(g, null);
2875 <    }
2876 <
2877 <    /**
2878 <     * thenRunAsync result completes exceptionally after exceptional
2879 <     * completion of source
2880 <     */
2881 <    public void testThenRunAsync2() {
2882 <        CompletableFuture<Integer> f = new CompletableFuture<>();
2883 <        Noop r = new Noop();
2884 <        CompletableFuture<Void> g = f.thenRunAsync(r);
2885 <        f.completeExceptionally(new CFException());
2886 <        try {
2887 <            g.join();
2888 <            shouldThrow();
2889 <        } catch (CompletionException success) {}
2890 <        checkCompletedWithWrappedCFException(g);
2891 <    }
2892 <
2893 <    /**
2894 <     * thenRunAsync result completes exceptionally if action does
2895 <     */
2896 <    public void testThenRunAsync3() {
2897 <        CompletableFuture<Integer> f = new CompletableFuture<>();
2898 <        FailingNoop r = new FailingNoop();
2899 <        CompletableFuture<Void> g = f.thenRunAsync(r);
2900 <        f.complete(null);
2901 <        checkCompletedWithWrappedCFException(g);
2902 <    }
2903 <
2904 <    /**
2905 <     * thenRunAsync result completes exceptionally if source cancelled
2906 <     */
2907 <    public void testThenRunAsync4() {
2908 <        CompletableFuture<Integer> f = new CompletableFuture<>();
2909 <        Noop r = new Noop();
2910 <        CompletableFuture<Void> g = f.thenRunAsync(r);
2911 <        assertTrue(f.cancel(true));
2912 <        checkCompletedWithWrappedCancellationException(g);
2913 <    }
2914 <
2915 <    /**
2916 <     * thenApplyAsync result completes normally after normal completion of source
2917 <     */
2918 <    public void testThenApplyAsync() {
2919 <        CompletableFuture<Integer> f = new CompletableFuture<>();
2920 <        CompletableFuture<Integer> g = f.thenApplyAsync(inc);
2921 <        f.complete(one);
2922 <        checkCompletedNormally(g, two);
2923 <    }
2924 <
2925 <    /**
2926 <     * thenApplyAsync result completes exceptionally after exceptional
2927 <     * completion of source
2928 <     */
2929 <    public void testThenApplyAsync2() {
2930 <        CompletableFuture<Integer> f = new CompletableFuture<>();
2931 <        CompletableFuture<Integer> g = f.thenApplyAsync(inc);
2932 <        f.completeExceptionally(new CFException());
2933 <        checkCompletedWithWrappedCFException(g);
2934 <    }
2935 <
2936 <    /**
2937 <     * thenApplyAsync result completes exceptionally if action does
2938 <     */
2939 <    public void testThenApplyAsync3() {
2940 <        CompletableFuture<Integer> f = new CompletableFuture<>();
2941 <        FailingFunction r = new FailingFunction();
2942 <        CompletableFuture<Integer> g = f.thenApplyAsync(r);
2943 <        f.complete(null);
2944 <        checkCompletedWithWrappedCFException(g);
2945 <    }
2946 <
2947 <    /**
2948 <     * thenApplyAsync result completes exceptionally if source cancelled
2949 <     */
2950 <    public void testThenApplyAsync4() {
2951 <        CompletableFuture<Integer> f = new CompletableFuture<>();
2952 <        CompletableFuture<Integer> g = f.thenApplyAsync(inc);
2953 <        assertTrue(f.cancel(true));
2954 <        checkCompletedWithWrappedCancellationException(g);
2955 <    }
2956 <
2957 <    /**
2958 <     * thenAcceptAsync result completes normally after normal
2959 <     * completion of source
2960 <     */
2961 <    public void testThenAcceptAsync() {
2962 <        CompletableFuture<Integer> f = new CompletableFuture<>();
2963 <        IncAction r = new IncAction();
2964 <        CompletableFuture<Void> g = f.thenAcceptAsync(r);
2965 <        f.complete(one);
2966 <        checkCompletedNormally(g, null);
2967 <        assertEquals(r.value, (Integer) 2);
2968 <    }
2969 <
2970 <    /**
2971 <     * thenAcceptAsync result completes exceptionally after exceptional
2972 <     * completion of source
2973 <     */
2974 <    public void testThenAcceptAsync2() {
2975 <        CompletableFuture<Integer> f = new CompletableFuture<>();
2976 <        IncAction r = new IncAction();
2977 <        CompletableFuture<Void> g = f.thenAcceptAsync(r);
2978 <        f.completeExceptionally(new CFException());
2979 <        checkCompletedWithWrappedCFException(g);
2980 <    }
2981 <
2982 <    /**
2983 <     * thenAcceptAsync result completes exceptionally if action does
2984 <     */
2985 <    public void testThenAcceptAsync3() {
2986 <        CompletableFuture<Integer> f = new CompletableFuture<>();
2987 <        FailingConsumer r = new FailingConsumer();
2988 <        CompletableFuture<Void> g = f.thenAcceptAsync(r);
2989 <        f.complete(null);
2990 <        checkCompletedWithWrappedCFException(g);
2991 <    }
2992 <
2993 <    /**
2994 <     * thenAcceptAsync result completes exceptionally if source cancelled
2995 <     */
2996 <    public void testThenAcceptAsync4() {
2997 <        CompletableFuture<Integer> f = new CompletableFuture<>();
2998 <        IncAction r = new IncAction();
2999 <        CompletableFuture<Void> g = f.thenAcceptAsync(r);
3000 <        assertTrue(f.cancel(true));
3001 <        checkCompletedWithWrappedCancellationException(g);
3002 <    }
3003 <
3004 <    /**
3005 <     * thenComposeAsync result completes normally after normal
3006 <     * completion of source
3007 <     */
3008 <    public void testThenComposeAsync() {
3009 <        CompletableFuture<Integer> f, g;
3010 <        CompletableFutureInc r;
3011 <
3012 <        f = new CompletableFuture<>();
3013 <        g = f.thenComposeAsync(r = new CompletableFutureInc());
3014 <        f.complete(one);
3015 <        checkCompletedNormally(g, two);
3016 <
3017 <        f = new CompletableFuture<>();
3018 <        f.complete(one);
3019 <        g = f.thenComposeAsync(r = new CompletableFutureInc());
3020 <        checkCompletedNormally(g, two);
3021 <    }
3022 <
3023 <    /**
3024 <     * thenComposeAsync result completes exceptionally after
3025 <     * exceptional completion of source
3026 <     */
3027 <    public void testThenComposeAsync2() {
3028 <        CompletableFuture<Integer> f, g;
3029 <        CompletableFutureInc r;
3030 <
3031 <        f = new CompletableFuture<>();
3032 <        g = f.thenComposeAsync(r = new CompletableFutureInc());
3033 <        f.completeExceptionally(new CFException());
3034 <        checkCompletedWithWrappedCFException(g);
3035 <        assertFalse(r.ran);
3036 <
3037 <        f = new CompletableFuture<>();
3038 <        f.completeExceptionally(new CFException());
3039 <        g = f.thenComposeAsync(r = new CompletableFutureInc());
3040 <        checkCompletedWithWrappedCFException(g);
3041 <        assertFalse(r.ran);
3042 <    }
3043 <
3044 <    /**
3045 <     * thenComposeAsync result completes exceptionally if action does
3046 <     */
3047 <    public void testThenComposeAsync3() {
3048 <        CompletableFuture<Integer> f, g;
3049 <        FailingCompletableFutureFunction r;
3050 <
3051 <        f = new CompletableFuture<>();
3052 <        g = f.thenComposeAsync(r = new FailingCompletableFutureFunction());
3053 <        f.complete(one);
3054 <        checkCompletedWithWrappedCFException(g);
3055 <
3056 <        f = new CompletableFuture<>();
3057 <        f.complete(one);
3058 <        g = f.thenComposeAsync(r = new FailingCompletableFutureFunction());
3059 <        checkCompletedWithWrappedCFException(g);
3060 <    }
3061 <
3062 <    /**
3063 <     * thenComposeAsync result completes exceptionally if source cancelled
3064 <     */
3065 <    public void testThenComposeAsync4() {
3066 <        CompletableFuture<Integer> f, g;
3067 <        CompletableFutureInc r;
3068 <
3069 <        f = new CompletableFuture<>();
3070 <        g = f.thenComposeAsync(r = new CompletableFutureInc());
3071 <        assertTrue(f.cancel(true));
3072 <        checkCompletedWithWrappedCancellationException(g);
3073 <
3074 <        f = new CompletableFuture<>();
3075 <        assertTrue(f.cancel(true));
3076 <        g = f.thenComposeAsync(r = new CompletableFutureInc());
3077 <        checkCompletedWithWrappedCancellationException(g);
3078 <    }
3079 <
3080 <    // async with explicit executors
3081 <
3082 <    /**
3083 <     * thenRunAsync result completes normally after normal completion of source
3084 <     */
3085 <    public void testThenRunAsyncE() {
3086 <        CompletableFuture<Integer> f = new CompletableFuture<>();
3087 <        Noop r = new Noop();
3088 <        CompletableFuture<Void> g = f.thenRunAsync(r, new ThreadExecutor());
3089 <        f.complete(null);
3090 <        checkCompletedNormally(g, null);
3091 <
3092 <        // reordered version
3093 <        f = new CompletableFuture<>();
3094 <        f.complete(null);
3095 <        r = new Noop();
3096 <        g = f.thenRunAsync(r, new ThreadExecutor());
3097 <        checkCompletedNormally(g, null);
3098 <    }
3099 <
3100 <    /**
3101 <     * thenRunAsync result completes exceptionally after exceptional
3102 <     * completion of source
3103 <     */
3104 <    public void testThenRunAsync2E() {
3105 <        CompletableFuture<Integer> f = new CompletableFuture<>();
3106 <        Noop r = new Noop();
3107 <        CompletableFuture<Void> g = f.thenRunAsync(r, new ThreadExecutor());
3108 <        f.completeExceptionally(new CFException());
3109 <        try {
3110 <            g.join();
3111 <            shouldThrow();
3112 <        } catch (CompletionException success) {}
3113 <        checkCompletedWithWrappedCFException(g);
3114 <    }
3115 <
3116 <    /**
3117 <     * thenRunAsync result completes exceptionally if action does
3118 <     */
3119 <    public void testThenRunAsync3E() {
3120 <        CompletableFuture<Integer> f = new CompletableFuture<>();
3121 <        FailingNoop r = new FailingNoop();
3122 <        CompletableFuture<Void> g = f.thenRunAsync(r, new ThreadExecutor());
3123 <        f.complete(null);
3124 <        checkCompletedWithWrappedCFException(g);
3125 <    }
3126 <
3127 <    /**
3128 <     * thenRunAsync result completes exceptionally if source cancelled
3129 <     */
3130 <    public void testThenRunAsync4E() {
3131 <        CompletableFuture<Integer> f = new CompletableFuture<>();
3132 <        Noop r = new Noop();
3133 <        CompletableFuture<Void> g = f.thenRunAsync(r, new ThreadExecutor());
3134 <        assertTrue(f.cancel(true));
3135 <        checkCompletedWithWrappedCancellationException(g);
3136 <    }
3137 <
3138 <    /**
3139 <     * thenApplyAsync result completes normally after normal completion of source
3140 <     */
3141 <    public void testThenApplyAsyncE() {
3142 <        CompletableFuture<Integer> f = new CompletableFuture<>();
3143 <        CompletableFuture<Integer> g = f.thenApplyAsync(inc, new ThreadExecutor());
3144 <        f.complete(one);
3145 <        checkCompletedNormally(g, two);
3146 <    }
3147 <
3148 <    /**
3149 <     * thenApplyAsync result completes exceptionally after exceptional
3150 <     * completion of source
3151 <     */
3152 <    public void testThenApplyAsync2E() {
3153 <        CompletableFuture<Integer> f = new CompletableFuture<>();
3154 <        CompletableFuture<Integer> g = f.thenApplyAsync(inc, new ThreadExecutor());
3155 <        f.completeExceptionally(new CFException());
3156 <        checkCompletedWithWrappedCFException(g);
3157 <    }
3158 <
3159 <    /**
3160 <     * thenApplyAsync result completes exceptionally if action does
3161 <     */
3162 <    public void testThenApplyAsync3E() {
3163 <        CompletableFuture<Integer> f = new CompletableFuture<>();
3164 <        FailingFunction r = new FailingFunction();
3165 <        CompletableFuture<Integer> g = f.thenApplyAsync(r, new ThreadExecutor());
3166 <        f.complete(null);
3167 <        checkCompletedWithWrappedCFException(g);
3168 <    }
3169 <
3170 <    /**
3171 <     * thenApplyAsync result completes exceptionally if source cancelled
3172 <     */
3173 <    public void testThenApplyAsync4E() {
3174 <        CompletableFuture<Integer> f = new CompletableFuture<>();
3175 <        CompletableFuture<Integer> g = f.thenApplyAsync(inc, new ThreadExecutor());
3176 <        assertTrue(f.cancel(true));
3177 <        checkCompletedWithWrappedCancellationException(g);
3178 <    }
3179 <
3180 <    /**
3181 <     * thenAcceptAsync result completes normally after normal
3182 <     * completion of source
3183 <     */
3184 <    public void testThenAcceptAsyncE() {
3185 <        CompletableFuture<Integer> f = new CompletableFuture<>();
3186 <        IncAction r = new IncAction();
3187 <        CompletableFuture<Void> g = f.thenAcceptAsync(r, new ThreadExecutor());
3188 <        f.complete(one);
3189 <        checkCompletedNormally(g, null);
3190 <        assertEquals(r.value, (Integer) 2);
3191 <    }
3192 <
3193 <    /**
3194 <     * thenAcceptAsync result completes exceptionally after exceptional
3195 <     * completion of source
3196 <     */
3197 <    public void testThenAcceptAsync2E() {
3198 <        CompletableFuture<Integer> f = new CompletableFuture<>();
3199 <        IncAction r = new IncAction();
3200 <        CompletableFuture<Void> g = f.thenAcceptAsync(r, new ThreadExecutor());
3201 <        f.completeExceptionally(new CFException());
3202 <        checkCompletedWithWrappedCFException(g);
3203 <    }
3204 <
3205 <    /**
3206 <     * thenAcceptAsync result completes exceptionally if action does
3207 <     */
3208 <    public void testThenAcceptAsync3E() {
3209 <        CompletableFuture<Integer> f = new CompletableFuture<>();
3210 <        FailingConsumer r = new FailingConsumer();
3211 <        CompletableFuture<Void> g = f.thenAcceptAsync(r, new ThreadExecutor());
3212 <        f.complete(null);
3213 <        checkCompletedWithWrappedCFException(g);
3214 <    }
3015 >    public void testThenCompose_sourceCancelled() {
3016 >        for (ExecutionMode m : ExecutionMode.values())
3017 >        for (boolean createIncomplete : new boolean[] { true, false })
3018 >        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
3019 >    {
3020 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
3021 >        final CompletableFutureInc r = new CompletableFutureInc(m);
3022 >        if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
3023 >        final CompletableFuture<Integer> g = m.thenCompose(f, r);
3024 >        if (createIncomplete) {
3025 >            checkIncomplete(g);
3026 >            assertTrue(f.cancel(mayInterruptIfRunning));
3027 >        }
3028  
3216    /**
3217     * thenAcceptAsync result completes exceptionally if source cancelled
3218     */
3219    public void testThenAcceptAsync4E() {
3220        CompletableFuture<Integer> f = new CompletableFuture<>();
3221        IncAction r = new IncAction();
3222        CompletableFuture<Void> g = f.thenAcceptAsync(r, new ThreadExecutor());
3223        assertTrue(f.cancel(true));
3029          checkCompletedWithWrappedCancellationException(g);
3030 <    }
3031 <
3227 <    /**
3228 <     * thenComposeAsync result completes normally after normal
3229 <     * completion of source
3230 <     */
3231 <    public void testThenComposeAsyncE() {
3232 <        CompletableFuture<Integer> f = new CompletableFuture<>();
3233 <        CompletableFutureInc r = new CompletableFutureInc();
3234 <        CompletableFuture<Integer> g = f.thenComposeAsync(r, new ThreadExecutor());
3235 <        f.complete(one);
3236 <        checkCompletedNormally(g, two);
3237 <    }
3238 <
3239 <    /**
3240 <     * thenComposeAsync result completes exceptionally after
3241 <     * exceptional completion of source
3242 <     */
3243 <    public void testThenComposeAsync2E() {
3244 <        CompletableFuture<Integer> f = new CompletableFuture<>();
3245 <        CompletableFutureInc r = new CompletableFutureInc();
3246 <        CompletableFuture<Integer> g = f.thenComposeAsync(r, new ThreadExecutor());
3247 <        f.completeExceptionally(new CFException());
3248 <        checkCompletedWithWrappedCFException(g);
3249 <    }
3030 >        checkCancelled(f);
3031 >    }}
3032  
3033      /**
3034 <     * thenComposeAsync result completes exceptionally if action does
3034 >     * thenCompose result completes exceptionally if the result of the action does
3035       */
3036 <    public void testThenComposeAsync3E() {
3037 <        CompletableFuture<Integer> f = new CompletableFuture<>();
3038 <        FailingCompletableFutureFunction r = new FailingCompletableFutureFunction();
3039 <        CompletableFuture<Integer> g = f.thenComposeAsync(r, new ThreadExecutor());
3040 <        f.complete(one);
3041 <        checkCompletedWithWrappedCFException(g);
3042 <    }
3036 >    public void testThenCompose_actionReturnsFailingFuture() {
3037 >        for (ExecutionMode m : ExecutionMode.values())
3038 >        for (int order = 0; order < 6; order++)
3039 >        for (Integer v1 : new Integer[] { 1, null })
3040 >    {
3041 >        final CFException ex = new CFException();
3042 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
3043 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
3044 >        final CompletableFuture<Integer> h;
3045 >        // Test all permutations of orders
3046 >        switch (order) {
3047 >        case 0:
3048 >            assertTrue(f.complete(v1));
3049 >            assertTrue(g.completeExceptionally(ex));
3050 >            h = m.thenCompose(f, (x -> g));
3051 >            break;
3052 >        case 1:
3053 >            assertTrue(f.complete(v1));
3054 >            h = m.thenCompose(f, (x -> g));
3055 >            assertTrue(g.completeExceptionally(ex));
3056 >            break;
3057 >        case 2:
3058 >            assertTrue(g.completeExceptionally(ex));
3059 >            assertTrue(f.complete(v1));
3060 >            h = m.thenCompose(f, (x -> g));
3061 >            break;
3062 >        case 3:
3063 >            assertTrue(g.completeExceptionally(ex));
3064 >            h = m.thenCompose(f, (x -> g));
3065 >            assertTrue(f.complete(v1));
3066 >            break;
3067 >        case 4:
3068 >            h = m.thenCompose(f, (x -> g));
3069 >            assertTrue(f.complete(v1));
3070 >            assertTrue(g.completeExceptionally(ex));
3071 >            break;
3072 >        case 5:
3073 >            h = m.thenCompose(f, (x -> g));
3074 >            assertTrue(f.complete(v1));
3075 >            assertTrue(g.completeExceptionally(ex));
3076 >            break;
3077 >        default: throw new AssertionError();
3078 >        }
3079  
3080 <    /**
3081 <     * thenComposeAsync result completes exceptionally if source cancelled
3082 <     */
3083 <    public void testThenComposeAsync4E() {
3266 <        CompletableFuture<Integer> f = new CompletableFuture<>();
3267 <        CompletableFutureInc r = new CompletableFutureInc();
3268 <        CompletableFuture<Integer> g = f.thenComposeAsync(r, new ThreadExecutor());
3269 <        assertTrue(f.cancel(true));
3270 <        checkCompletedWithWrappedCancellationException(g);
3271 <    }
3080 >        checkCompletedExceptionally(g, ex);
3081 >        checkCompletedWithWrappedException(h, ex);
3082 >        checkCompletedNormally(f, v1);
3083 >    }}
3084  
3085      // other static methods
3086  
# Line 3286 | Line 3098 | public class CompletableFutureTest exten
3098       * when all components complete normally
3099       */
3100      public void testAllOf_normal() throws Exception {
3101 <        for (int k = 1; k < 20; ++k) {
3102 <            CompletableFuture<Integer>[] fs = (CompletableFuture<Integer>[]) new CompletableFuture[k];
3103 <            for (int i = 0; i < k; ++i)
3101 >        for (int k = 1; k < 10; k++) {
3102 >            CompletableFuture<Integer>[] fs
3103 >                = (CompletableFuture<Integer>[]) new CompletableFuture[k];
3104 >            for (int i = 0; i < k; i++)
3105 >                fs[i] = new CompletableFuture<>();
3106 >            CompletableFuture<Void> f = CompletableFuture.allOf(fs);
3107 >            for (int i = 0; i < k; i++) {
3108 >                checkIncomplete(f);
3109 >                checkIncomplete(CompletableFuture.allOf(fs));
3110 >                fs[i].complete(one);
3111 >            }
3112 >            checkCompletedNormally(f, null);
3113 >            checkCompletedNormally(CompletableFuture.allOf(fs), null);
3114 >        }
3115 >    }
3116 >
3117 >    public void testAllOf_backwards() throws Exception {
3118 >        for (int k = 1; k < 10; k++) {
3119 >            CompletableFuture<Integer>[] fs
3120 >                = (CompletableFuture<Integer>[]) new CompletableFuture[k];
3121 >            for (int i = 0; i < k; i++)
3122                  fs[i] = new CompletableFuture<>();
3123              CompletableFuture<Void> f = CompletableFuture.allOf(fs);
3124 <            for (int i = 0; i < k; ++i) {
3124 >            for (int i = k - 1; i >= 0; i--) {
3125                  checkIncomplete(f);
3126                  checkIncomplete(CompletableFuture.allOf(fs));
3127                  fs[i].complete(one);
# Line 3301 | Line 3131 | public class CompletableFutureTest exten
3131          }
3132      }
3133  
3134 +    public void testAllOf_exceptional() throws Exception {
3135 +        for (int k = 1; k < 10; k++) {
3136 +            CompletableFuture<Integer>[] fs
3137 +                = (CompletableFuture<Integer>[]) new CompletableFuture[k];
3138 +            CFException ex = new CFException();
3139 +            for (int i = 0; i < k; i++)
3140 +                fs[i] = new CompletableFuture<>();
3141 +            CompletableFuture<Void> f = CompletableFuture.allOf(fs);
3142 +            for (int i = 0; i < k; i++) {
3143 +                checkIncomplete(f);
3144 +                checkIncomplete(CompletableFuture.allOf(fs));
3145 +                if (i != k/2) {
3146 +                    fs[i].complete(i);
3147 +                    checkCompletedNormally(fs[i], i);
3148 +                } else {
3149 +                    fs[i].completeExceptionally(ex);
3150 +                    checkCompletedExceptionally(fs[i], ex);
3151 +                }
3152 +            }
3153 +            checkCompletedWithWrappedException(f, ex);
3154 +            checkCompletedWithWrappedException(CompletableFuture.allOf(fs), ex);
3155 +        }
3156 +    }
3157 +
3158      /**
3159       * anyOf(no component futures) returns an incomplete future
3160       */
3161      public void testAnyOf_empty() throws Exception {
3162 +        for (Integer v1 : new Integer[] { 1, null })
3163 +    {
3164          CompletableFuture<Object> f = CompletableFuture.anyOf();
3165          checkIncomplete(f);
3166 <    }
3166 >
3167 >        f.complete(v1);
3168 >        checkCompletedNormally(f, v1);
3169 >    }}
3170  
3171      /**
3172       * anyOf returns a future completed normally with a value when
3173       * a component future does
3174       */
3175      public void testAnyOf_normal() throws Exception {
3176 <        for (int k = 0; k < 10; ++k) {
3176 >        for (int k = 0; k < 10; k++) {
3177              CompletableFuture[] fs = new CompletableFuture[k];
3178 <            for (int i = 0; i < k; ++i)
3178 >            for (int i = 0; i < k; i++)
3179                  fs[i] = new CompletableFuture<>();
3180              CompletableFuture<Object> f = CompletableFuture.anyOf(fs);
3181              checkIncomplete(f);
3182 <            for (int i = 0; i < k; ++i) {
3183 <                fs[i].complete(one);
3184 <                checkCompletedNormally(f, one);
3185 <                checkCompletedNormally(CompletableFuture.anyOf(fs), one);
3182 >            for (int i = 0; i < k; i++) {
3183 >                fs[i].complete(i);
3184 >                checkCompletedNormally(f, 0);
3185 >                int x = (int) CompletableFuture.anyOf(fs).join();
3186 >                assertTrue(0 <= x && x <= i);
3187 >            }
3188 >        }
3189 >    }
3190 >    public void testAnyOf_normal_backwards() throws Exception {
3191 >        for (int k = 0; k < 10; k++) {
3192 >            CompletableFuture[] fs = new CompletableFuture[k];
3193 >            for (int i = 0; i < k; i++)
3194 >                fs[i] = new CompletableFuture<>();
3195 >            CompletableFuture<Object> f = CompletableFuture.anyOf(fs);
3196 >            checkIncomplete(f);
3197 >            for (int i = k - 1; i >= 0; i--) {
3198 >                fs[i].complete(i);
3199 >                checkCompletedNormally(f, k - 1);
3200 >                int x = (int) CompletableFuture.anyOf(fs).join();
3201 >                assertTrue(i <= x && x <= k - 1);
3202              }
3203          }
3204      }
# Line 3332 | Line 3207 | public class CompletableFutureTest exten
3207       * anyOf result completes exceptionally when any component does.
3208       */
3209      public void testAnyOf_exceptional() throws Exception {
3210 <        for (int k = 0; k < 10; ++k) {
3210 >        for (int k = 0; k < 10; k++) {
3211 >            CompletableFuture[] fs = new CompletableFuture[k];
3212 >            CFException[] exs = new CFException[k];
3213 >            for (int i = 0; i < k; i++) {
3214 >                fs[i] = new CompletableFuture<>();
3215 >                exs[i] = new CFException();
3216 >            }
3217 >            CompletableFuture<Object> f = CompletableFuture.anyOf(fs);
3218 >            checkIncomplete(f);
3219 >            for (int i = 0; i < k; i++) {
3220 >                fs[i].completeExceptionally(exs[i]);
3221 >                checkCompletedWithWrappedException(f, exs[0]);
3222 >                checkCompletedWithWrappedCFException(CompletableFuture.anyOf(fs));
3223 >            }
3224 >        }
3225 >    }
3226 >
3227 >    public void testAnyOf_exceptional_backwards() throws Exception {
3228 >        for (int k = 0; k < 10; k++) {
3229              CompletableFuture[] fs = new CompletableFuture[k];
3230 <            for (int i = 0; i < k; ++i)
3230 >            CFException[] exs = new CFException[k];
3231 >            for (int i = 0; i < k; i++) {
3232                  fs[i] = new CompletableFuture<>();
3233 +                exs[i] = new CFException();
3234 +            }
3235              CompletableFuture<Object> f = CompletableFuture.anyOf(fs);
3236              checkIncomplete(f);
3237 <            for (int i = 0; i < k; ++i) {
3238 <                fs[i].completeExceptionally(new CFException());
3239 <                checkCompletedWithWrappedCFException(f);
3237 >            for (int i = k - 1; i >= 0; i--) {
3238 >                fs[i].completeExceptionally(exs[i]);
3239 >                checkCompletedWithWrappedException(f, exs[k - 1]);
3240                  checkCompletedWithWrappedCFException(CompletableFuture.anyOf(fs));
3241              }
3242          }
# Line 3353 | Line 3249 | public class CompletableFutureTest exten
3249          CompletableFuture<Integer> f = new CompletableFuture<>();
3250          CompletableFuture<Integer> g = new CompletableFuture<>();
3251          CompletableFuture<Integer> nullFuture = (CompletableFuture<Integer>)null;
3356        CompletableFuture<?> h;
3252          ThreadExecutor exec = new ThreadExecutor();
3253  
3254          Runnable[] throwingActions = {
3255              () -> CompletableFuture.supplyAsync(null),
3256              () -> CompletableFuture.supplyAsync(null, exec),
3257 <            () -> CompletableFuture.supplyAsync(supplyOne, null),
3257 >            () -> CompletableFuture.supplyAsync(new IntegerSupplier(ExecutionMode.SYNC, 42), null),
3258  
3259              () -> CompletableFuture.runAsync(null),
3260              () -> CompletableFuture.runAsync(null, exec),
# Line 3432 | Line 3327 | public class CompletableFutureTest exten
3327  
3328              () -> f.thenCompose(null),
3329              () -> f.thenComposeAsync(null),
3330 <            () -> f.thenComposeAsync(new CompletableFutureInc(), null),
3330 >            () -> f.thenComposeAsync(new CompletableFutureInc(ExecutionMode.EXECUTOR), null),
3331              () -> f.thenComposeAsync(null, exec),
3332  
3333              () -> f.exceptionally(null),
3334  
3335              () -> f.handle(null),
3441
3336              () -> CompletableFuture.allOf((CompletableFuture<?>)null),
3337              () -> CompletableFuture.allOf((CompletableFuture<?>[])null),
3338              () -> CompletableFuture.allOf(f, null),
# Line 3464 | Line 3358 | public class CompletableFutureTest exten
3358          assertSame(f, f.toCompletableFuture());
3359      }
3360  
3361 +    // jdk9
3362 +
3363      /**
3364 <     * whenComplete action executes on normal completion, propagating
3469 <     * source result.
3364 >     * newIncompleteFuture returns an incomplete CompletableFuture
3365       */
3366 <    public void testWhenComplete_normalCompletion1() {
3367 <        for (ExecutionMode m : ExecutionMode.values())
3368 <        for (Integer v1 : new Integer[] { 1, null }) {
3366 >    public void testNewIncompleteFuture() {
3367 >        CompletableFuture<Integer> f = new CompletableFuture<>();
3368 >        CompletableFuture<Integer> g = f.newIncompleteFuture();
3369 >        checkIncomplete(f);
3370 >        checkIncomplete(g);
3371 >    }
3372  
3373 <        final AtomicInteger a = new AtomicInteger();
3374 <        final CompletableFuture<Integer> f = new CompletableFuture<>();
3375 <        final CompletableFuture<Integer> g =
3376 <            m.whenComplete(f,
3377 <                           (Integer x, Throwable t) -> {
3378 <                               threadAssertSame(x, v1);
3379 <                               threadAssertNull(t);
3380 <                               a.getAndIncrement();
3381 <                           });
3382 <        f.complete(v1);
3485 <        checkCompletedNormally(f, v1);
3486 <        checkCompletedNormally(g, v1);
3487 <        assertEquals(a.get(), 1);
3488 <        }
3373 >    /**
3374 >     * completedStage returns a completed CompletionStage
3375 >     */
3376 >    public void testCompletedStage() {
3377 >        AtomicInteger x = new AtomicInteger();
3378 >        AtomicReference<Throwable> r = new AtomicReference<Throwable>();
3379 >        CompletionStage<Integer> f = CompletableFuture.completedStage(1);
3380 >        f.whenComplete((v, e) -> {if (e != null) r.set(e); else x.set(v);});
3381 >        assertEquals(x.get(), 1);
3382 >        assertNull(r.get());
3383      }
3384  
3385      /**
3386 <     * whenComplete action executes on exceptional completion, propagating
3387 <     * source result.
3386 >     * defaultExecutor by default returns the commonPool if
3387 >     * it supports at least one thread.
3388       */
3389 <    public void testWhenComplete_exceptionalCompletion() {
3390 <        for (ExecutionMode m : ExecutionMode.values())
3391 <        for (Integer v1 : new Integer[] { 1, null }) {
3389 >    public void testDefaultExecutor() {
3390 >        CompletableFuture<Integer> f = new CompletableFuture<>();
3391 >        Executor e = f.defaultExecutor();
3392 >        Executor c =  ForkJoinPool.commonPool();
3393 >        if (ForkJoinPool.getCommonPoolParallelism() > 1)
3394 >            assertSame(e, c);
3395 >    }
3396  
3397 <        final AtomicInteger a = new AtomicInteger();
3398 <        final CFException ex = new CFException();
3399 <        final CompletableFuture<Integer> f = new CompletableFuture<>();
3400 <        final CompletableFuture<Integer> g = m.whenComplete
3401 <            (f,
3402 <             (Integer x, Throwable t) -> {
3403 <                threadAssertNull(x);
3404 <                threadAssertSame(t, ex);
3507 <                a.getAndIncrement();
3508 <            });
3509 <        f.completeExceptionally(ex);
3510 <        checkCompletedWithWrappedCFException(f, ex);
3511 <        checkCompletedWithWrappedCFException(g, ex);
3512 <        assertEquals(a.get(), 1);
3513 <        }
3397 >    /**
3398 >     * failedFuture returns a CompletableFuture completed
3399 >     * exceptionally with the given Exception
3400 >     */
3401 >    public void testFailedFuture() {
3402 >        CFException ex = new CFException();
3403 >        CompletableFuture<Integer> f = CompletableFuture.failedFuture(ex);
3404 >        checkCompletedExceptionallyWithRootCause(f, ex);
3405      }
3406  
3407      /**
3408 <     * If a whenComplete action throws an exception when triggered by
3518 <     * a normal completion, it completes exceptionally
3408 >     * failedFuture(null) throws NPE
3409       */
3410 <    public void testWhenComplete_actionFailed() {
3411 <        for (ExecutionMode m : ExecutionMode.values())
3412 <        for (Integer v1 : new Integer[] { 1, null }) {
3410 >    public void testFailedFuture2() {
3411 >        try {
3412 >            CompletableFuture<Integer> f = CompletableFuture.failedFuture(null);
3413 >            shouldThrow();
3414 >        } catch (NullPointerException success) {}
3415 >    }
3416  
3417 <        final CFException ex = new CFException();
3418 <        final CompletableFuture<Integer> f = new CompletableFuture<>();
3419 <        final CompletableFuture<Integer> g = m.whenComplete
3420 <            (f,
3421 <             (Integer x, Throwable t) -> {
3422 <                threadAssertSame(x, v1);
3423 <                threadAssertNull(t);
3424 <                throw ex;
3425 <            });
3426 <        f.complete(v1);
3427 <        checkCompletedNormally(f, v1);
3428 <        checkCompletedWithWrappedCFException(g, ex);
3536 <        }
3417 >    /**
3418 >     * copy returns a CompletableFuture that is completed normally,
3419 >     * with the same value, when source is.
3420 >     */
3421 >    public void testCopy() {
3422 >        CompletableFuture<Integer> f = new CompletableFuture<>();
3423 >        CompletableFuture<Integer> g = f.copy();
3424 >        checkIncomplete(f);
3425 >        checkIncomplete(g);
3426 >        f.complete(1);
3427 >        checkCompletedNormally(f, 1);
3428 >        checkCompletedNormally(g, 1);
3429      }
3430  
3431      /**
3432 <     * If a whenComplete action throws an exception when triggered by
3433 <     * a source completion that also throws an exception, the source
3542 <     * exception takes precedence.
3432 >     * copy returns a CompletableFuture that is completed exceptionally
3433 >     * when source is.
3434       */
3435 <    public void testWhenComplete_actionFailedSourceFailed() {
3436 <        for (ExecutionMode m : ExecutionMode.values())
3437 <        for (Integer v1 : new Integer[] { 1, null }) {
3435 >    public void testCopy2() {
3436 >        CompletableFuture<Integer> f = new CompletableFuture<>();
3437 >        CompletableFuture<Integer> g = f.copy();
3438 >        checkIncomplete(f);
3439 >        checkIncomplete(g);
3440 >        CFException ex = new CFException();
3441 >        f.completeExceptionally(ex);
3442 >        checkCompletedExceptionally(f, ex);
3443 >        checkCompletedWithWrappedCFException(g);
3444 >    }
3445  
3446 <        final CFException ex1 = new CFException();
3447 <        final CFException ex2 = new CFException();
3448 <        final CompletableFuture<Integer> f = new CompletableFuture<>();
3449 <        final CompletableFuture<Integer> g = m.whenComplete
3450 <            (f,
3451 <             (Integer x, Throwable t) -> {
3452 <                threadAssertSame(t, ex1);
3453 <                threadAssertNull(x);
3454 <                throw ex2;
3455 <            });
3456 <        f.completeExceptionally(ex1);
3457 <        checkCompletedWithWrappedCFException(f, ex1);
3458 <        checkCompletedWithWrappedCFException(g, ex1);
3459 <        }
3446 >    /**
3447 >     * minimalCompletionStage returns a CompletableFuture that is
3448 >     * completed normally, with the same value, when source is.
3449 >     */
3450 >    public void testMinimalCompletionStage() {
3451 >        CompletableFuture<Integer> f = new CompletableFuture<>();
3452 >        CompletionStage<Integer> g = f.minimalCompletionStage();
3453 >        AtomicInteger x = new AtomicInteger();
3454 >        AtomicReference<Throwable> r = new AtomicReference<Throwable>();
3455 >        checkIncomplete(f);
3456 >        g.whenComplete((v, e) -> {if (e != null) r.set(e); else x.set(v);});
3457 >        f.complete(1);
3458 >        checkCompletedNormally(f, 1);
3459 >        assertEquals(x.get(), 1);
3460 >        assertNull(r.get());
3461      }
3462  
3463      /**
3464 <     * handleAsync action completes normally with function value on
3465 <     * either normal or exceptional completion of source
3464 >     * minimalCompletionStage returns a CompletableFuture that is
3465 >     * completed exceptionally when source is.
3466       */
3467 <    public void testHandleAsync() {
3468 <        CompletableFuture<Integer> f, g;
3469 <        IntegerHandler r;
3467 >    public void testMinimalCompletionStage2() {
3468 >        CompletableFuture<Integer> f = new CompletableFuture<>();
3469 >        CompletionStage<Integer> g = f.minimalCompletionStage();
3470 >        AtomicInteger x = new AtomicInteger();
3471 >        AtomicReference<Throwable> r = new AtomicReference<Throwable>();
3472 >        g.whenComplete((v, e) -> {if (e != null) r.set(e); else x.set(v);});
3473 >        checkIncomplete(f);
3474 >        CFException ex = new CFException();
3475 >        f.completeExceptionally(ex);
3476 >        checkCompletedExceptionally(f, ex);
3477 >        assertEquals(x.get(), 0);
3478 >        assertEquals(r.get().getCause(), ex);
3479 >    }
3480  
3481 <        f = new CompletableFuture<>();
3482 <        g = f.handleAsync(r = new IntegerHandler());
3483 <        assertFalse(r.ran);
3484 <        f.completeExceptionally(new CFException());
3481 >    /**
3482 >     * failedStage returns a Completionstage completed
3483 >     * exceptionally with the given Exception
3484 >     */
3485 >    public void testFailedStage() {
3486 >        CFException ex = new CFException();
3487 >        CompletionStage<Integer> f = CompletableFuture.failedStage(ex);
3488 >        AtomicInteger x = new AtomicInteger();
3489 >        AtomicReference<Throwable> r = new AtomicReference<Throwable>();
3490 >        f.whenComplete((v, e) -> {if (e != null) r.set(e); else x.set(v);});
3491 >        assertEquals(x.get(), 0);
3492 >        assertEquals(r.get().getCause(), ex);
3493 >    }
3494 >
3495 >    /**
3496 >     * completeAsync completes with value of given supplier
3497 >     */
3498 >    public void testCompleteAsync() {
3499 >        CompletableFuture<Integer> f = new CompletableFuture<>();
3500 >        f.completeAsync(() -> 1);
3501 >        f.join();
3502 >        checkCompletedNormally(f, 1);
3503 >    }
3504 >
3505 >    /**
3506 >     * completeAsync completes exceptionally if given supplier throws
3507 >     */
3508 >    public void testCompleteAsync2() {
3509 >        CompletableFuture<Integer> f = new CompletableFuture<>();
3510 >        CFException ex = new CFException();
3511 >        f.completeAsync(() -> {if (true) throw ex; return 1;});
3512 >        try {
3513 >            f.join();
3514 >            shouldThrow();
3515 >        } catch (Exception success) {}
3516          checkCompletedWithWrappedCFException(f);
3517 <        checkCompletedNormally(g, three);
3578 <        assertTrue(r.ran);
3517 >    }
3518  
3519 <        f = new CompletableFuture<>();
3520 <        g = f.handleAsync(r = new IntegerHandler());
3521 <        assertFalse(r.ran);
3522 <        f.completeExceptionally(new CFException());
3519 >    /**
3520 >     * completeAsync with given executor completes with value of given supplier
3521 >     */
3522 >    public void testCompleteAsync3() {
3523 >        CompletableFuture<Integer> f = new CompletableFuture<>();
3524 >        f.completeAsync(() -> 1, new ThreadExecutor());
3525 >        f.join();
3526 >        checkCompletedNormally(f, 1);
3527 >    }
3528 >
3529 >    /**
3530 >     * completeAsync with given executor completes exceptionally if
3531 >     * given supplier throws
3532 >     */
3533 >    public void testCompleteAsync4() {
3534 >        CompletableFuture<Integer> f = new CompletableFuture<>();
3535 >        CFException ex = new CFException();
3536 >        f.completeAsync(() -> {if (true) throw ex; return 1;}, new ThreadExecutor());
3537 >        try {
3538 >            f.join();
3539 >            shouldThrow();
3540 >        } catch (Exception success) {}
3541          checkCompletedWithWrappedCFException(f);
3542 <        checkCompletedNormally(g, three);
3586 <        assertTrue(r.ran);
3542 >    }
3543  
3544 <        f = new CompletableFuture<>();
3545 <        g = f.handleAsync(r = new IntegerHandler());
3546 <        assertFalse(r.ran);
3547 <        f.complete(one);
3548 <        checkCompletedNormally(f, one);
3549 <        checkCompletedNormally(g, two);
3550 <        assertTrue(r.ran);
3544 >    /**
3545 >     *  orTimeout completes with TimeoutException if not complete
3546 >     */
3547 >    public void testOrTimeout() {
3548 >        CompletableFuture<Integer> f = new CompletableFuture<>();
3549 >        f.orTimeout(SHORT_DELAY_MS, TimeUnit.MILLISECONDS);
3550 >        checkCompletedExceptionallyWithTimeout(f);
3551 >    }
3552  
3553 <        f = new CompletableFuture<>();
3554 <        g = f.handleAsync(r = new IntegerHandler());
3555 <        assertFalse(r.ran);
3556 <        f.complete(one);
3557 <        checkCompletedNormally(f, one);
3558 <        checkCompletedNormally(g, two);
3559 <        assertTrue(r.ran);
3553 >    /**
3554 >     *  orTimeout completes normally if completed before timeout
3555 >     */
3556 >    public void testOrTimeout2() {
3557 >        CompletableFuture<Integer> f = new CompletableFuture<>();
3558 >        f.complete(1);
3559 >        f.orTimeout(SHORT_DELAY_MS, TimeUnit.MILLISECONDS);
3560 >        checkCompletedNormally(f, 1);
3561      }
3562  
3563      /**
3564 <     * handleAsync action with Executor completes normally with
3607 <     * function value on either normal or exceptional completion of
3608 <     * source
3564 >     *  completeOnTimeout completes with given value if not complete
3565       */
3566 <    public void testHandleAsync2() {
3567 <        CompletableFuture<Integer> f, g;
3568 <        ThreadExecutor exec = new ThreadExecutor();
3569 <        IntegerHandler r;
3566 >    public void testCompleteOnTimeout() {
3567 >        CompletableFuture<Integer> f = new CompletableFuture<>();
3568 >        f.completeOnTimeout(-1, SHORT_DELAY_MS, TimeUnit.MILLISECONDS);
3569 >        f.join();
3570 >        checkCompletedNormally(f, -1);
3571 >    }
3572  
3573 <        f = new CompletableFuture<>();
3574 <        g = f.handleAsync(r = new IntegerHandler(), exec);
3575 <        assertFalse(r.ran);
3576 <        f.completeExceptionally(new CFException());
3577 <        checkCompletedWithWrappedCFException(f);
3578 <        checkCompletedNormally(g, three);
3579 <        assertTrue(r.ran);
3573 >    /**
3574 >     *  completeOnTimeout has no effect if completed within timeout
3575 >     */
3576 >    public void testCompleteOnTimeout2() {
3577 >        CompletableFuture<Integer> f = new CompletableFuture<>();
3578 >        f.complete(1);
3579 >        f.completeOnTimeout(-1, SHORT_DELAY_MS, TimeUnit.MILLISECONDS);
3580 >        checkCompletedNormally(f, 1);
3581 >    }
3582  
3583 <        f = new CompletableFuture<>();
3584 <        g = f.handleAsync(r = new IntegerHandler(), exec);
3585 <        assertFalse(r.ran);
3586 <        f.completeExceptionally(new CFException());
3587 <        checkCompletedWithWrappedCFException(f);
3588 <        checkCompletedNormally(g, three);
3589 <        assertTrue(r.ran);
3583 >    /**
3584 >     * delayedExecutor returns an executor that delays submission
3585 >     */
3586 >    public void testDelayedExecutor() {
3587 >        long timeoutMillis = SMALL_DELAY_MS;
3588 >        Executor d = CompletableFuture.delayedExecutor(timeoutMillis,
3589 >                                                       MILLISECONDS);
3590 >        long startTime = System.nanoTime();
3591 >        CompletableFuture<Integer> f = CompletableFuture.supplyAsync(() -> 1, d);
3592 >        assertNull(f.getNow(null));
3593 >        try {
3594 >            f.get(LONG_DELAY_MS, MILLISECONDS);
3595 >        } catch (Throwable fail) { threadUnexpectedException(fail); }
3596 >        assertTrue(millisElapsedSince(startTime) > timeoutMillis/2);
3597 >        checkCompletedNormally(f, 1);
3598 >    }
3599  
3600 <        f = new CompletableFuture<>();
3601 <        g = f.handleAsync(r = new IntegerHandler(), exec);
3602 <        assertFalse(r.ran);
3603 <        f.complete(one);
3604 <        checkCompletedNormally(f, one);
3605 <        checkCompletedNormally(g, two);
3606 <        assertTrue(r.ran);
3600 >    /**
3601 >     * delayedExecutor for a given executor returns an executor that
3602 >     * delays submission
3603 >     */
3604 >    public void testDelayedExecutor2() {
3605 >        long timeoutMillis = SMALL_DELAY_MS;
3606 >        Executor d = CompletableFuture.delayedExecutor(timeoutMillis,
3607 >                                                       MILLISECONDS,
3608 >                                                       new ThreadExecutor());
3609 >        long startTime = System.nanoTime();
3610 >        CompletableFuture<Integer> f = CompletableFuture.supplyAsync(() -> 1, d);
3611 >        assertNull(f.getNow(null));
3612 >        try {
3613 >            f.get(LONG_DELAY_MS, MILLISECONDS);
3614 >        } catch (Throwable fail) { threadUnexpectedException(fail); }
3615 >        assertTrue(millisElapsedSince(startTime) > timeoutMillis/2);
3616 >        checkCompletedNormally(f, 1);
3617 >    }
3618  
3619 <        f = new CompletableFuture<>();
3620 <        g = f.handleAsync(r = new IntegerHandler(), exec);
3621 <        assertFalse(r.ran);
3622 <        f.complete(one);
3623 <        checkCompletedNormally(f, one);
3624 <        checkCompletedNormally(g, two);
3625 <        assertTrue(r.ran);
3619 >    //--- tests of implementation details; not part of official tck ---
3620 >
3621 >    Object resultOf(CompletableFuture<?> f) {
3622 >        try {
3623 >            java.lang.reflect.Field resultField
3624 >                = CompletableFuture.class.getDeclaredField("result");
3625 >            resultField.setAccessible(true);
3626 >            return resultField.get(f);
3627 >        } catch (Throwable t) { throw new AssertionError(t); }
3628      }
3629  
3630 +    public void testExceptionPropagationReusesResultObject() {
3631 +        if (!testImplementationDetails) return;
3632 +        for (ExecutionMode m : ExecutionMode.values())
3633 +    {
3634 +        final CFException ex = new CFException();
3635 +        final CompletableFuture<Integer> v42 = CompletableFuture.completedFuture(42);
3636 +        final CompletableFuture<Integer> incomplete = new CompletableFuture<>();
3637 +
3638 +        List<Function<CompletableFuture<Integer>, CompletableFuture<?>>> funs
3639 +            = new ArrayList<>();
3640 +
3641 +        funs.add((y) -> m.thenRun(y, new Noop(m)));
3642 +        funs.add((y) -> m.thenAccept(y, new NoopConsumer(m)));
3643 +        funs.add((y) -> m.thenApply(y, new IncFunction(m)));
3644 +
3645 +        funs.add((y) -> m.runAfterEither(y, incomplete, new Noop(m)));
3646 +        funs.add((y) -> m.acceptEither(y, incomplete, new NoopConsumer(m)));
3647 +        funs.add((y) -> m.applyToEither(y, incomplete, new IncFunction(m)));
3648 +
3649 +        funs.add((y) -> m.runAfterBoth(y, v42, new Noop(m)));
3650 +        funs.add((y) -> m.thenAcceptBoth(y, v42, new SubtractAction(m)));
3651 +        funs.add((y) -> m.thenCombine(y, v42, new SubtractFunction(m)));
3652 +
3653 +        funs.add((y) -> m.whenComplete(y, (Integer x, Throwable t) -> {}));
3654 +
3655 +        funs.add((y) -> m.thenCompose(y, new CompletableFutureInc(m)));
3656 +
3657 +        funs.add((y) -> CompletableFuture.allOf(new CompletableFuture<?>[] {y, v42}));
3658 +        funs.add((y) -> CompletableFuture.anyOf(new CompletableFuture<?>[] {y, incomplete}));
3659 +
3660 +        for (Function<CompletableFuture<Integer>, CompletableFuture<?>>
3661 +                 fun : funs) {
3662 +            CompletableFuture<Integer> f = new CompletableFuture<>();
3663 +            f.completeExceptionally(ex);
3664 +            CompletableFuture<Integer> src = m.thenApply(f, new IncFunction(m));
3665 +            checkCompletedWithWrappedException(src, ex);
3666 +            CompletableFuture<?> dep = fun.apply(src);
3667 +            checkCompletedWithWrappedException(dep, ex);
3668 +            assertSame(resultOf(src), resultOf(dep));
3669 +        }
3670 +
3671 +        for (Function<CompletableFuture<Integer>, CompletableFuture<?>>
3672 +                 fun : funs) {
3673 +            CompletableFuture<Integer> f = new CompletableFuture<>();
3674 +            CompletableFuture<Integer> src = m.thenApply(f, new IncFunction(m));
3675 +            CompletableFuture<?> dep = fun.apply(src);
3676 +            f.completeExceptionally(ex);
3677 +            checkCompletedWithWrappedException(src, ex);
3678 +            checkCompletedWithWrappedException(dep, ex);
3679 +            assertSame(resultOf(src), resultOf(dep));
3680 +        }
3681 +
3682 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
3683 +        for (Function<CompletableFuture<Integer>, CompletableFuture<?>>
3684 +                 fun : funs) {
3685 +            CompletableFuture<Integer> f = new CompletableFuture<>();
3686 +            f.cancel(mayInterruptIfRunning);
3687 +            checkCancelled(f);
3688 +            CompletableFuture<Integer> src = m.thenApply(f, new IncFunction(m));
3689 +            checkCompletedWithWrappedCancellationException(src);
3690 +            CompletableFuture<?> dep = fun.apply(src);
3691 +            checkCompletedWithWrappedCancellationException(dep);
3692 +            assertSame(resultOf(src), resultOf(dep));
3693 +        }
3694 +
3695 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
3696 +        for (Function<CompletableFuture<Integer>, CompletableFuture<?>>
3697 +                 fun : funs) {
3698 +            CompletableFuture<Integer> f = new CompletableFuture<>();
3699 +            CompletableFuture<Integer> src = m.thenApply(f, new IncFunction(m));
3700 +            CompletableFuture<?> dep = fun.apply(src);
3701 +            f.cancel(mayInterruptIfRunning);
3702 +            checkCancelled(f);
3703 +            checkCompletedWithWrappedCancellationException(src);
3704 +            checkCompletedWithWrappedCancellationException(dep);
3705 +            assertSame(resultOf(src), resultOf(dep));
3706 +        }
3707 +    }}
3708 +
3709   }

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