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Comparing jsr166/src/test/tck/CompletableFutureTest.java (file contents):
Revision 1.28 by jsr166, Sun Jul 14 16:34:49 2013 UTC vs.
Revision 1.85 by jsr166, Mon Jun 16 20:44:14 2014 UTC

# Line 16 | Line 16 | import java.util.concurrent.ExecutionExc
16   import java.util.concurrent.Future;
17   import java.util.concurrent.CompletableFuture;
18   import java.util.concurrent.CompletionException;
19 + import java.util.concurrent.CompletionStage;
20 + import java.util.concurrent.ForkJoinPool;
21 + import java.util.concurrent.ForkJoinTask;
22   import java.util.concurrent.TimeoutException;
23   import java.util.concurrent.atomic.AtomicInteger;
24   import static java.util.concurrent.TimeUnit.MILLISECONDS;
# Line 102 | Line 105 | public class CompletableFutureTest exten
105          assertTrue(f.toString().contains("[Completed exceptionally]"));
106      }
107  
108 +    <U> void checkCompletedExceptionallyWithRootCause(CompletableFuture<U> f,
109 +                                                      Throwable ex) {
110 +        try {
111 +            f.get(LONG_DELAY_MS, MILLISECONDS);
112 +            shouldThrow();
113 +        } catch (ExecutionException success) {
114 +            assertSame(ex, success.getCause());
115 +        } catch (Throwable fail) { threadUnexpectedException(fail); }
116 +        try {
117 +            f.join();
118 +            shouldThrow();
119 +        } catch (CompletionException success) {
120 +            assertSame(ex, success.getCause());
121 +        }
122 +        try {
123 +            f.getNow(null);
124 +            shouldThrow();
125 +        } catch (CompletionException success) {
126 +            assertSame(ex, success.getCause());
127 +        }
128 +        try {
129 +            f.get();
130 +            shouldThrow();
131 +        } catch (ExecutionException success) {
132 +            assertSame(ex, success.getCause());
133 +        } catch (Throwable fail) { threadUnexpectedException(fail); }
134 +
135 +        assertTrue(f.isDone());
136 +        assertFalse(f.isCancelled());
137 +        assertTrue(f.toString().contains("[Completed exceptionally]"));
138 +    }
139 +
140 +    <U> void checkCompletedWithWrappedException(CompletableFuture<U> f,
141 +                                                Throwable ex) {
142 +        checkCompletedExceptionallyWithRootCause(f, ex);
143 +        try {
144 +            CompletableFuture<Throwable> spy = f.handle
145 +                ((U u, Throwable t) -> t);
146 +            assertTrue(spy.join() instanceof CompletionException);
147 +            assertSame(ex, spy.join().getCause());
148 +        } catch (Throwable fail) { threadUnexpectedException(fail); }
149 +    }
150 +
151 +    <U> void checkCompletedExceptionally(CompletableFuture<U> f, Throwable ex) {
152 +        checkCompletedExceptionallyWithRootCause(f, ex);
153 +        try {
154 +            CompletableFuture<Throwable> spy = f.handle
155 +                ((U u, Throwable t) -> t);
156 +            assertSame(ex, spy.join());
157 +        } catch (Throwable fail) { threadUnexpectedException(fail); }
158 +    }
159 +
160      void checkCancelled(CompletableFuture<?> f) {
161          try {
162              f.get(LONG_DELAY_MS, MILLISECONDS);
# Line 172 | Line 227 | public class CompletableFutureTest exten
227       * isCancelled, join, get, and getNow
228       */
229      public void testComplete() {
230 +        for (Integer v1 : new Integer[] { 1, null })
231 +    {
232          CompletableFuture<Integer> f = new CompletableFuture<>();
233          checkIncomplete(f);
234 <        f.complete(one);
235 <        checkCompletedNormally(f, one);
236 <    }
234 >        assertTrue(f.complete(v1));
235 >        assertFalse(f.complete(v1));
236 >        checkCompletedNormally(f, v1);
237 >    }}
238  
239      /**
240       * completeExceptionally completes exceptionally, as indicated by
# Line 184 | Line 242 | public class CompletableFutureTest exten
242       */
243      public void testCompleteExceptionally() {
244          CompletableFuture<Integer> f = new CompletableFuture<>();
245 +        CFException ex = new CFException();
246          checkIncomplete(f);
247 <        f.completeExceptionally(new CFException());
248 <        checkCompletedWithWrappedCFException(f);
247 >        f.completeExceptionally(ex);
248 >        checkCompletedExceptionally(f, ex);
249      }
250  
251      /**
# Line 194 | Line 253 | public class CompletableFutureTest exten
253       * methods isDone, isCancelled, join, get, and getNow
254       */
255      public void testCancel() {
256 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
257 +    {
258          CompletableFuture<Integer> f = new CompletableFuture<>();
259          checkIncomplete(f);
260          assertTrue(f.cancel(true));
261 +        assertTrue(f.cancel(true));
262          checkCancelled(f);
263 <    }
263 >    }}
264  
265      /**
266       * obtrudeValue forces completion with given value
# Line 206 | Line 268 | public class CompletableFutureTest exten
268      public void testObtrudeValue() {
269          CompletableFuture<Integer> f = new CompletableFuture<>();
270          checkIncomplete(f);
271 <        f.complete(one);
271 >        assertTrue(f.complete(one));
272          checkCompletedNormally(f, one);
273          f.obtrudeValue(three);
274          checkCompletedNormally(f, three);
# Line 215 | Line 277 | public class CompletableFutureTest exten
277          f = new CompletableFuture<>();
278          f.obtrudeValue(three);
279          checkCompletedNormally(f, three);
280 +        f.obtrudeValue(null);
281 +        checkCompletedNormally(f, null);
282          f = new CompletableFuture<>();
283          f.completeExceptionally(new CFException());
284          f.obtrudeValue(four);
# Line 225 | Line 289 | public class CompletableFutureTest exten
289       * obtrudeException forces completion with given exception
290       */
291      public void testObtrudeException() {
292 <        CompletableFuture<Integer> f = new CompletableFuture<>();
293 <        checkIncomplete(f);
294 <        f.complete(one);
295 <        checkCompletedNormally(f, one);
296 <        f.obtrudeException(new CFException());
233 <        checkCompletedWithWrappedCFException(f);
292 >        for (Integer v1 : new Integer[] { 1, null })
293 >    {
294 >        CFException ex;
295 >        CompletableFuture<Integer> f;
296 >
297          f = new CompletableFuture<>();
298 <        f.obtrudeException(new CFException());
299 <        checkCompletedWithWrappedCFException(f);
298 >        assertTrue(f.complete(v1));
299 >        for (int i = 0; i < 2; i++) {
300 >            f.obtrudeException(ex = new CFException());
301 >            checkCompletedExceptionally(f, ex);
302 >        }
303 >
304          f = new CompletableFuture<>();
305 <        f.completeExceptionally(new CFException());
306 <        f.obtrudeValue(four);
307 <        checkCompletedNormally(f, four);
308 <        f.obtrudeException(new CFException());
309 <        checkCompletedWithWrappedCFException(f);
310 <    }
305 >        for (int i = 0; i < 2; i++) {
306 >            f.obtrudeException(ex = new CFException());
307 >            checkCompletedExceptionally(f, ex);
308 >        }
309 >
310 >        f = new CompletableFuture<>();
311 >        f.completeExceptionally(ex = new CFException());
312 >        f.obtrudeValue(v1);
313 >        checkCompletedNormally(f, v1);
314 >        f.obtrudeException(ex = new CFException());
315 >        checkCompletedExceptionally(f, ex);
316 >        f.completeExceptionally(new CFException());
317 >        checkCompletedExceptionally(f, ex);
318 >        assertFalse(f.complete(v1));
319 >        checkCompletedExceptionally(f, ex);
320 >    }}
321  
322      /**
323       * getNumberOfDependents returns number of dependent tasks
324       */
325      public void testGetNumberOfDependents() {
326 <        CompletableFuture<Integer> f = new CompletableFuture<>();
327 <        assertEquals(f.getNumberOfDependents(), 0);
328 <        CompletableFuture g = f.thenRun(new Noop());
329 <        assertEquals(f.getNumberOfDependents(), 1);
330 <        assertEquals(g.getNumberOfDependents(), 0);
331 <        CompletableFuture h = f.thenRun(new Noop());
332 <        assertEquals(f.getNumberOfDependents(), 2);
333 <        f.complete(1);
326 >        for (ExecutionMode m : ExecutionMode.values())
327 >        for (Integer v1 : new Integer[] { 1, null })
328 >    {
329 >        CompletableFuture<Integer> f = new CompletableFuture<>();
330 >        assertEquals(0, f.getNumberOfDependents());
331 >        final CompletableFuture<Void> g = m.thenRun(f, new Noop(m));
332 >        assertEquals(1, f.getNumberOfDependents());
333 >        assertEquals(0, g.getNumberOfDependents());
334 >        final CompletableFuture<Void> h = m.thenRun(f, new Noop(m));
335 >        assertEquals(2, f.getNumberOfDependents());
336 >        assertEquals(0, h.getNumberOfDependents());
337 >        assertTrue(f.complete(v1));
338          checkCompletedNormally(g, null);
339 <        assertEquals(f.getNumberOfDependents(), 0);
340 <        assertEquals(g.getNumberOfDependents(), 0);
341 <    }
339 >        checkCompletedNormally(h, null);
340 >        assertEquals(0, f.getNumberOfDependents());
341 >        assertEquals(0, g.getNumberOfDependents());
342 >        assertEquals(0, h.getNumberOfDependents());
343 >    }}
344  
345      /**
346       * toString indicates current completion state
# Line 268 | Line 351 | public class CompletableFutureTest exten
351          f = new CompletableFuture<String>();
352          assertTrue(f.toString().contains("[Not completed]"));
353  
354 <        f.complete("foo");
354 >        assertTrue(f.complete("foo"));
355          assertTrue(f.toString().contains("[Completed normally]"));
356  
357          f = new CompletableFuture<String>();
358 <        f.completeExceptionally(new IndexOutOfBoundsException());
358 >        assertTrue(f.completeExceptionally(new IndexOutOfBoundsException()));
359          assertTrue(f.toString().contains("[Completed exceptionally]"));
360 +
361 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false }) {
362 +            f = new CompletableFuture<String>();
363 +            assertTrue(f.cancel(mayInterruptIfRunning));
364 +            assertTrue(f.toString().contains("[Completed exceptionally]"));
365 +        }
366      }
367  
368      /**
# Line 284 | Line 373 | public class CompletableFutureTest exten
373          checkCompletedNormally(f, "test");
374      }
375  
376 <    // Choose non-commutative actions for better coverage
377 <
378 <    static final Supplier<Integer> supplyOne =
379 <        () -> Integer.valueOf(1);
380 <    static final Function<Integer, Integer> inc =
381 <        (Integer x) -> Integer.valueOf(x.intValue() + 1);
382 <    static final BiFunction<Integer, Integer, Integer> subtract =
294 <        (Integer x, Integer y) -> Integer.valueOf(x.intValue() - y.intValue());
295 <    static final class IncAction implements Consumer<Integer> {
296 <        int value;
297 <        public void accept(Integer x) { value = x.intValue() + 1; }
298 <    }
299 <    static final class SubtractAction implements BiConsumer<Integer, Integer> {
300 <        int value;
301 <        public void accept(Integer x, Integer y) {
302 <            value = x.intValue() - y.intValue();
376 >    abstract class CheckedAction {
377 >        int invocationCount = 0;
378 >        final ExecutionMode m;
379 >        CheckedAction(ExecutionMode m) { this.m = m; }
380 >        void invoked() {
381 >            m.checkExecutionMode();
382 >            assertEquals(0, invocationCount++);
383          }
384 <    }
385 <    static final class Noop implements Runnable {
306 <        boolean ran;
307 <        public void run() { ran = true; }
384 >        void assertNotInvoked() { assertEquals(0, invocationCount); }
385 >        void assertInvoked() { assertEquals(1, invocationCount); }
386      }
387  
388 <    static final class FailingSupplier implements Supplier<Integer> {
389 <        boolean ran;
390 <        public Integer get() { ran = true; throw new CFException(); }
391 <    }
392 <    static final class FailingConsumer implements Consumer<Integer> {
393 <        boolean ran;
316 <        public void accept(Integer x) { ran = true; throw new CFException(); }
317 <    }
318 <    static final class FailingBiConsumer implements BiConsumer<Integer, Integer> {
319 <        boolean ran;
320 <        public void accept(Integer x, Integer y) { ran = true; throw new CFException(); }
321 <    }
322 <    static final class FailingFunction implements Function<Integer, Integer> {
323 <        boolean ran;
324 <        public Integer apply(Integer x) { ran = true; throw new CFException(); }
325 <    }
326 <    static final class FailingBiFunction implements BiFunction<Integer, Integer, Integer> {
327 <        boolean ran;
328 <        public Integer apply(Integer x, Integer y) { ran = true; throw new CFException(); }
329 <    }
330 <    static final class FailingNoop implements Runnable {
331 <        boolean ran;
332 <        public void run() { ran = true; throw new CFException(); }
333 <    }
334 <
335 <    static final class CompletableFutureInc
336 <        implements Function<Integer, CompletableFuture<Integer>> {
337 <        boolean ran;
338 <        public CompletableFuture<Integer> apply(Integer x) {
339 <            ran = true;
340 <            CompletableFuture<Integer> f = new CompletableFuture<>();
341 <            f.complete(Integer.valueOf(x.intValue() + 1));
342 <            return f;
388 >    abstract class CheckedIntegerAction extends CheckedAction {
389 >        Integer value;
390 >        CheckedIntegerAction(ExecutionMode m) { super(m); }
391 >        void assertValue(Integer expected) {
392 >            assertInvoked();
393 >            assertEquals(expected, value);
394          }
395      }
396  
397 <    static final class FailingCompletableFutureFunction
398 <        implements Function<Integer, CompletableFuture<Integer>> {
399 <        boolean ran;
400 <        public CompletableFuture<Integer> apply(Integer x) {
401 <            ran = true; throw new CFException();
397 >    class IntegerSupplier extends CheckedAction
398 >        implements Supplier<Integer>
399 >    {
400 >        final Integer value;
401 >        IntegerSupplier(ExecutionMode m, Integer value) {
402 >            super(m);
403 >            this.value = value;
404          }
405 <    }
406 <
407 <    // Used for explicit executor tests
355 <    static final class ThreadExecutor implements Executor {
356 <        AtomicInteger count = new AtomicInteger(0);
357 <
358 <        public void execute(Runnable r) {
359 <            count.getAndIncrement();
360 <            new Thread(r).start();
405 >        public Integer get() {
406 >            invoked();
407 >            return value;
408          }
409      }
410  
411 <    static final class ExceptionToInteger implements Function<Throwable, Integer> {
412 <        public Integer apply(Throwable x) { return Integer.valueOf(3); }
411 >    // A function that handles and produces null values as well.
412 >    static Integer inc(Integer x) {
413 >        return (x == null) ? null : x + 1;
414      }
415  
416 <    static final class IntegerHandler implements BiFunction<Integer, Throwable, Integer> {
417 <        boolean ran;
418 <        public Integer apply(Integer x, Throwable t) {
419 <            ran = true;
420 <            return (t == null) ? two : three;
416 >    class NoopConsumer extends CheckedIntegerAction
417 >        implements Consumer<Integer>
418 >    {
419 >        NoopConsumer(ExecutionMode m) { super(m); }
420 >        public void accept(Integer x) {
421 >            invoked();
422 >            value = x;
423          }
424      }
425  
426 <    /**
427 <     * exceptionally action completes with function value on source
428 <     * exception;  otherwise with source value
429 <     */
430 <    public void testExceptionally() {
431 <        CompletableFuture<Integer> f = new CompletableFuture<>();
432 <        ExceptionToInteger r = new ExceptionToInteger();
433 <        CompletableFuture<Integer> g = f.exceptionally(r);
384 <        f.completeExceptionally(new CFException());
385 <        checkCompletedNormally(g, three);
386 <
387 <        f = new CompletableFuture<>();
388 <        r = new ExceptionToInteger();
389 <        g = f.exceptionally(r);
390 <        f.complete(one);
391 <        checkCompletedNormally(g, one);
392 <    }
393 <
394 <    /**
395 <     * handle action completes normally with function value on either
396 <     * normal or exceptional completion of source
397 <     */
398 <    public void testHandle() {
399 <        CompletableFuture<Integer> f, g;
400 <        IntegerHandler r;
401 <
402 <        f = new CompletableFuture<>();
403 <        f.completeExceptionally(new CFException());
404 <        g = f.handle(r = new IntegerHandler());
405 <        assertTrue(r.ran);
406 <        checkCompletedNormally(g, three);
407 <
408 <        f = new CompletableFuture<>();
409 <        g = f.handle(r = new IntegerHandler());
410 <        assertFalse(r.ran);
411 <        f.completeExceptionally(new CFException());
412 <        checkCompletedNormally(g, three);
413 <        assertTrue(r.ran);
414 <
415 <        f = new CompletableFuture<>();
416 <        f.complete(one);
417 <        g = f.handle(r = new IntegerHandler());
418 <        assertTrue(r.ran);
419 <        checkCompletedNormally(g, two);
420 <
421 <        f = new CompletableFuture<>();
422 <        g = f.handle(r = new IntegerHandler());
423 <        assertFalse(r.ran);
424 <        f.complete(one);
425 <        assertTrue(r.ran);
426 <        checkCompletedNormally(g, two);
427 <    }
428 <
429 <    /**
430 <     * runAsync completes after running Runnable
431 <     */
432 <    public void testRunAsync() {
433 <        Noop r = new Noop();
434 <        CompletableFuture<Void> f = CompletableFuture.runAsync(r);
435 <        assertNull(f.join());
436 <        assertTrue(r.ran);
437 <        checkCompletedNormally(f, null);
438 <    }
439 <
440 <    /**
441 <     * runAsync with executor completes after running Runnable
442 <     */
443 <    public void testRunAsync2() {
444 <        Noop r = new Noop();
445 <        ThreadExecutor exec = new ThreadExecutor();
446 <        CompletableFuture<Void> f = CompletableFuture.runAsync(r, exec);
447 <        assertNull(f.join());
448 <        assertTrue(r.ran);
449 <        checkCompletedNormally(f, null);
450 <        assertEquals(1, exec.count.get());
451 <    }
452 <
453 <    /**
454 <     * failing runAsync completes exceptionally after running Runnable
455 <     */
456 <    public void testRunAsync3() {
457 <        FailingNoop r = new FailingNoop();
458 <        CompletableFuture<Void> f = CompletableFuture.runAsync(r);
459 <        checkCompletedWithWrappedCFException(f);
460 <        assertTrue(r.ran);
461 <    }
462 <
463 <    /**
464 <     * supplyAsync completes with result of supplier
465 <     */
466 <    public void testSupplyAsync() {
467 <        CompletableFuture<Integer> f;
468 <        f = CompletableFuture.supplyAsync(supplyOne);
469 <        assertEquals(f.join(), one);
470 <        checkCompletedNormally(f, one);
471 <    }
472 <
473 <    /**
474 <     * supplyAsync with executor completes with result of supplier
475 <     */
476 <    public void testSupplyAsync2() {
477 <        CompletableFuture<Integer> f;
478 <        f = CompletableFuture.supplyAsync(supplyOne, new ThreadExecutor());
479 <        assertEquals(f.join(), one);
480 <        checkCompletedNormally(f, one);
481 <    }
482 <
483 <    /**
484 <     * Failing supplyAsync completes exceptionally
485 <     */
486 <    public void testSupplyAsync3() {
487 <        FailingSupplier r = new FailingSupplier();
488 <        CompletableFuture<Integer> f = CompletableFuture.supplyAsync(r);
489 <        checkCompletedWithWrappedCFException(f);
490 <        assertTrue(r.ran);
491 <    }
492 <
493 <    // seq completion methods
494 <
495 <    /**
496 <     * thenRun result completes normally after normal completion of source
497 <     */
498 <    public void testThenRun() {
499 <        CompletableFuture<Integer> f;
500 <        CompletableFuture<Void> g;
501 <        Noop r;
502 <
503 <        f = new CompletableFuture<>();
504 <        g = f.thenRun(r = new Noop());
505 <        f.complete(null);
506 <        checkCompletedNormally(g, null);
507 <        assertTrue(r.ran);
508 <
509 <        f = new CompletableFuture<>();
510 <        f.complete(null);
511 <        g = f.thenRun(r = new Noop());
512 <        checkCompletedNormally(g, null);
513 <        assertTrue(r.ran);
514 <    }
515 <
516 <    /**
517 <     * thenRun result completes exceptionally after exceptional
518 <     * completion of source
519 <     */
520 <    public void testThenRun2() {
521 <        CompletableFuture<Integer> f;
522 <        CompletableFuture<Void> g;
523 <        Noop r;
524 <
525 <        f = new CompletableFuture<>();
526 <        g = f.thenRun(r = new Noop());
527 <        f.completeExceptionally(new CFException());
528 <        checkCompletedWithWrappedCFException(g);
529 <        assertFalse(r.ran);
530 <
531 <        f = new CompletableFuture<>();
532 <        f.completeExceptionally(new CFException());
533 <        g = f.thenRun(r = new Noop());
534 <        checkCompletedWithWrappedCFException(g);
535 <        assertFalse(r.ran);
536 <    }
537 <
538 <    /**
539 <     * thenRun result completes exceptionally if action does
540 <     */
541 <    public void testThenRun3() {
542 <        CompletableFuture<Integer> f;
543 <        CompletableFuture<Void> g;
544 <        FailingNoop r;
545 <
546 <        f = new CompletableFuture<>();
547 <        g = f.thenRun(r = new FailingNoop());
548 <        f.complete(null);
549 <        checkCompletedWithWrappedCFException(g);
550 <
551 <        f = new CompletableFuture<>();
552 <        f.complete(null);
553 <        g = f.thenRun(r = new FailingNoop());
554 <        checkCompletedWithWrappedCFException(g);
555 <    }
556 <
557 <    /**
558 <     * thenRun result completes exceptionally if source cancelled
559 <     */
560 <    public void testThenRun4() {
561 <        CompletableFuture<Integer> f;
562 <        CompletableFuture<Void> g;
563 <        Noop r;
564 <
565 <        f = new CompletableFuture<>();
566 <        g = f.thenRun(r = new Noop());
567 <        assertTrue(f.cancel(true));
568 <        checkCompletedWithWrappedCancellationException(g);
569 <
570 <        f = new CompletableFuture<>();
571 <        assertTrue(f.cancel(true));
572 <        g = f.thenRun(r = new Noop());
573 <        checkCompletedWithWrappedCancellationException(g);
574 <    }
575 <
576 <    /**
577 <     * thenApply result completes normally after normal completion of source
578 <     */
579 <    public void testThenApply() {
580 <        CompletableFuture<Integer> f = new CompletableFuture<>();
581 <        CompletableFuture<Integer> g = f.thenApply(inc);
582 <        f.complete(one);
583 <        checkCompletedNormally(g, two);
584 <    }
585 <
586 <    /**
587 <     * thenApply result completes exceptionally after exceptional
588 <     * completion of source
589 <     */
590 <    public void testThenApply2() {
591 <        CompletableFuture<Integer> f = new CompletableFuture<>();
592 <        CompletableFuture<Integer> g = f.thenApply(inc);
593 <        f.completeExceptionally(new CFException());
594 <        checkCompletedWithWrappedCFException(g);
595 <    }
596 <
597 <    /**
598 <     * thenApply result completes exceptionally if action does
599 <     */
600 <    public void testThenApply3() {
601 <        CompletableFuture<Integer> f = new CompletableFuture<>();
602 <        CompletableFuture<Integer> g = f.thenApply(new FailingFunction());
603 <        f.complete(one);
604 <        checkCompletedWithWrappedCFException(g);
605 <    }
606 <
607 <    /**
608 <     * thenApply result completes exceptionally if source cancelled
609 <     */
610 <    public void testThenApply4() {
611 <        CompletableFuture<Integer> f = new CompletableFuture<>();
612 <        CompletableFuture<Integer> g = f.thenApply(inc);
613 <        assertTrue(f.cancel(true));
614 <        checkCompletedWithWrappedCancellationException(g);
426 >    class IncFunction extends CheckedIntegerAction
427 >        implements Function<Integer,Integer>
428 >    {
429 >        IncFunction(ExecutionMode m) { super(m); }
430 >        public Integer apply(Integer x) {
431 >            invoked();
432 >            return value = inc(x);
433 >        }
434      }
435  
436 <    /**
437 <     * thenAccept result completes normally after normal completion of source
438 <     */
439 <    public void testThenAccept() {
440 <        CompletableFuture<Integer> f = new CompletableFuture<>();
441 <        IncAction r = new IncAction();
623 <        CompletableFuture<Void> g = f.thenAccept(r);
624 <        f.complete(one);
625 <        checkCompletedNormally(g, null);
626 <        assertEquals(r.value, 2);
436 >    // Choose non-commutative actions for better coverage
437 >    // A non-commutative function that handles and produces null values as well.
438 >    static Integer subtract(Integer x, Integer y) {
439 >        return (x == null && y == null) ? null :
440 >            ((x == null) ? 42 : x.intValue())
441 >            - ((y == null) ? 99 : y.intValue());
442      }
443  
444 <    /**
445 <     * thenAccept result completes exceptionally after exceptional
446 <     * completion of source
447 <     */
448 <    public void testThenAccept2() {
449 <        CompletableFuture<Integer> f = new CompletableFuture<>();
450 <        IncAction r = new IncAction();
451 <        CompletableFuture<Void> g = f.thenAccept(r);
637 <        f.completeExceptionally(new CFException());
638 <        checkCompletedWithWrappedCFException(g);
444 >    class SubtractAction extends CheckedIntegerAction
445 >        implements BiConsumer<Integer, Integer>
446 >    {
447 >        SubtractAction(ExecutionMode m) { super(m); }
448 >        public void accept(Integer x, Integer y) {
449 >            invoked();
450 >            value = subtract(x, y);
451 >        }
452      }
453  
454 <    /**
455 <     * thenAccept result completes exceptionally if action does
456 <     */
457 <    public void testThenAccept3() {
458 <        CompletableFuture<Integer> f = new CompletableFuture<>();
459 <        FailingConsumer r = new FailingConsumer();
460 <        CompletableFuture<Void> g = f.thenAccept(r);
461 <        f.complete(one);
649 <        checkCompletedWithWrappedCFException(g);
650 <        assertTrue(r.ran);
454 >    class SubtractFunction extends CheckedIntegerAction
455 >        implements BiFunction<Integer, Integer, Integer>
456 >    {
457 >        SubtractFunction(ExecutionMode m) { super(m); }
458 >        public Integer apply(Integer x, Integer y) {
459 >            invoked();
460 >            return value = subtract(x, y);
461 >        }
462      }
463  
464 <    /**
465 <     * thenAccept result completes exceptionally if source cancelled
466 <     */
467 <    public void testThenAccept4() {
468 <        CompletableFuture<Integer> f = new CompletableFuture<>();
658 <        IncAction r = new IncAction();
659 <        CompletableFuture<Void> g = f.thenAccept(r);
660 <        assertTrue(f.cancel(true));
661 <        checkCompletedWithWrappedCancellationException(g);
464 >    class Noop extends CheckedAction implements Runnable {
465 >        Noop(ExecutionMode m) { super(m); }
466 >        public void run() {
467 >            invoked();
468 >        }
469      }
470  
471 <    /**
472 <     * thenCombine result completes normally after normal completion
473 <     * of sources
474 <     */
475 <    public void testThenCombine() {
476 <        CompletableFuture<Integer> f, g, h;
477 <
478 <        f = new CompletableFuture<>();
672 <        g = new CompletableFuture<>();
673 <        h = f.thenCombine(g, subtract);
674 <        f.complete(3);
675 <        checkIncomplete(h);
676 <        g.complete(1);
677 <        checkCompletedNormally(h, 2);
678 <
679 <        f = new CompletableFuture<>();
680 <        g = new CompletableFuture<>();
681 <        h = f.thenCombine(g, subtract);
682 <        g.complete(1);
683 <        checkIncomplete(h);
684 <        f.complete(3);
685 <        checkCompletedNormally(h, 2);
686 <
687 <        f = new CompletableFuture<>();
688 <        g = new CompletableFuture<>();
689 <        g.complete(1);
690 <        f.complete(3);
691 <        h = f.thenCombine(g, subtract);
692 <        checkCompletedNormally(h, 2);
471 >    class FailingSupplier extends CheckedAction
472 >        implements Supplier<Integer>
473 >    {
474 >        FailingSupplier(ExecutionMode m) { super(m); }
475 >        public Integer get() {
476 >            invoked();
477 >            throw new CFException();
478 >        }
479      }
480  
481 <    /**
482 <     * thenCombine result completes exceptionally after exceptional
483 <     * completion of either source
484 <     */
485 <    public void testThenCombine2() {
486 <        CompletableFuture<Integer> f, g, h;
487 <
488 <        f = new CompletableFuture<>();
489 <        g = new CompletableFuture<>();
704 <        h = f.thenCombine(g, subtract);
705 <        f.completeExceptionally(new CFException());
706 <        checkIncomplete(h);
707 <        g.complete(1);
708 <        checkCompletedWithWrappedCFException(h);
709 <
710 <        f = new CompletableFuture<>();
711 <        g = new CompletableFuture<>();
712 <        h = f.thenCombine(g, subtract);
713 <        g.completeExceptionally(new CFException());
714 <        checkIncomplete(h);
715 <        f.complete(3);
716 <        checkCompletedWithWrappedCFException(h);
717 <
718 <        f = new CompletableFuture<>();
719 <        g = new CompletableFuture<>();
720 <        f.complete(3);
721 <        g.completeExceptionally(new CFException());
722 <        h = f.thenCombine(g, subtract);
723 <        checkCompletedWithWrappedCFException(h);
724 <
725 <        f = new CompletableFuture<>();
726 <        g = new CompletableFuture<>();
727 <        f.completeExceptionally(new CFException());
728 <        g.complete(3);
729 <        h = f.thenCombine(g, subtract);
730 <        checkCompletedWithWrappedCFException(h);
481 >    class FailingConsumer extends CheckedIntegerAction
482 >        implements Consumer<Integer>
483 >    {
484 >        FailingConsumer(ExecutionMode m) { super(m); }
485 >        public void accept(Integer x) {
486 >            invoked();
487 >            value = x;
488 >            throw new CFException();
489 >        }
490      }
491  
492 <    /**
493 <     * thenCombine result completes exceptionally if action does
494 <     */
495 <    public void testThenCombine3() {
496 <        CompletableFuture<Integer> f = new CompletableFuture<>();
497 <        CompletableFuture<Integer> f2 = new CompletableFuture<>();
498 <        FailingBiFunction r = new FailingBiFunction();
499 <        CompletableFuture<Integer> g = f.thenCombine(f2, r);
500 <        f.complete(one);
742 <        checkIncomplete(g);
743 <        assertFalse(r.ran);
744 <        f2.complete(two);
745 <        checkCompletedWithWrappedCFException(g);
746 <        assertTrue(r.ran);
492 >    class FailingBiConsumer extends CheckedIntegerAction
493 >        implements BiConsumer<Integer, Integer>
494 >    {
495 >        FailingBiConsumer(ExecutionMode m) { super(m); }
496 >        public void accept(Integer x, Integer y) {
497 >            invoked();
498 >            value = subtract(x, y);
499 >            throw new CFException();
500 >        }
501      }
502  
503 <    /**
504 <     * thenCombine result completes exceptionally if either source cancelled
505 <     */
506 <    public void testThenCombine4() {
507 <        CompletableFuture<Integer> f, g, h;
508 <
509 <        f = new CompletableFuture<>();
510 <        g = new CompletableFuture<>();
511 <        h = f.thenCombine(g, subtract);
758 <        assertTrue(f.cancel(true));
759 <        checkIncomplete(h);
760 <        g.complete(1);
761 <        checkCompletedWithWrappedCancellationException(h);
762 <
763 <        f = new CompletableFuture<>();
764 <        g = new CompletableFuture<>();
765 <        h = f.thenCombine(g, subtract);
766 <        assertTrue(g.cancel(true));
767 <        checkIncomplete(h);
768 <        f.complete(3);
769 <        checkCompletedWithWrappedCancellationException(h);
770 <
771 <        f = new CompletableFuture<>();
772 <        g = new CompletableFuture<>();
773 <        assertTrue(f.cancel(true));
774 <        assertTrue(g.cancel(true));
775 <        h = f.thenCombine(g, subtract);
776 <        checkCompletedWithWrappedCancellationException(h);
503 >    class FailingFunction extends CheckedIntegerAction
504 >        implements Function<Integer, Integer>
505 >    {
506 >        FailingFunction(ExecutionMode m) { super(m); }
507 >        public Integer apply(Integer x) {
508 >            invoked();
509 >            value = x;
510 >            throw new CFException();
511 >        }
512      }
513  
514 <    /**
515 <     * thenAcceptBoth result completes normally after normal
516 <     * completion of sources
517 <     */
518 <    public void testThenAcceptBoth() {
519 <        CompletableFuture<Integer> f, g;
520 <        CompletableFuture<Void> h;
521 <        SubtractAction r;
522 <
788 <        f = new CompletableFuture<>();
789 <        g = new CompletableFuture<>();
790 <        h = f.thenAcceptBoth(g, r = new SubtractAction());
791 <        f.complete(3);
792 <        checkIncomplete(h);
793 <        g.complete(1);
794 <        checkCompletedNormally(h, null);
795 <        assertEquals(r.value, 2);
796 <
797 <        f = new CompletableFuture<>();
798 <        g = new CompletableFuture<>();
799 <        h = f.thenAcceptBoth(g, r = new SubtractAction());
800 <        g.complete(1);
801 <        checkIncomplete(h);
802 <        f.complete(3);
803 <        checkCompletedNormally(h, null);
804 <        assertEquals(r.value, 2);
805 <
806 <        f = new CompletableFuture<>();
807 <        g = new CompletableFuture<>();
808 <        g.complete(1);
809 <        f.complete(3);
810 <        h = f.thenAcceptBoth(g, r = new SubtractAction());
811 <        checkCompletedNormally(h, null);
812 <        assertEquals(r.value, 2);
514 >    class FailingBiFunction extends CheckedIntegerAction
515 >        implements BiFunction<Integer, Integer, Integer>
516 >    {
517 >        FailingBiFunction(ExecutionMode m) { super(m); }
518 >        public Integer apply(Integer x, Integer y) {
519 >            invoked();
520 >            value = subtract(x, y);
521 >            throw new CFException();
522 >        }
523      }
524  
525 <    /**
526 <     * thenAcceptBoth result completes exceptionally after exceptional
527 <     * completion of either source
528 <     */
529 <    public void testThenAcceptBoth2() {
530 <        CompletableFuture<Integer> f, g;
821 <        CompletableFuture<Void> h;
822 <        SubtractAction r;
823 <
824 <        f = new CompletableFuture<>();
825 <        g = new CompletableFuture<>();
826 <        h = f.thenAcceptBoth(g, r = new SubtractAction());
827 <        f.completeExceptionally(new CFException());
828 <        checkIncomplete(h);
829 <        g.complete(1);
830 <        checkCompletedWithWrappedCFException(h);
831 <
832 <        f = new CompletableFuture<>();
833 <        g = new CompletableFuture<>();
834 <        h = f.thenAcceptBoth(g, r = new SubtractAction());
835 <        g.completeExceptionally(new CFException());
836 <        checkIncomplete(h);
837 <        f.complete(3);
838 <        checkCompletedWithWrappedCFException(h);
839 <
840 <        f = new CompletableFuture<>();
841 <        g = new CompletableFuture<>();
842 <        f.complete(3);
843 <        g.completeExceptionally(new CFException());
844 <        h = f.thenAcceptBoth(g, r = new SubtractAction());
845 <        checkCompletedWithWrappedCFException(h);
846 <
847 <        f = new CompletableFuture<>();
848 <        g = new CompletableFuture<>();
849 <        f.completeExceptionally(new CFException());
850 <        g.complete(3);
851 <        h = f.thenAcceptBoth(g, r = new SubtractAction());
852 <        checkCompletedWithWrappedCFException(h);
525 >    class FailingRunnable extends CheckedAction implements Runnable {
526 >        FailingRunnable(ExecutionMode m) { super(m); }
527 >        public void run() {
528 >            invoked();
529 >            throw new CFException();
530 >        }
531      }
532  
855    /**
856     * thenAcceptBoth result completes exceptionally if action does
857     */
858    public void testThenAcceptBoth3() {
859        CompletableFuture<Integer> f, g;
860        CompletableFuture<Void> h;
861        FailingBiConsumer r;
533  
534 <        f = new CompletableFuture<>();
535 <        g = new CompletableFuture<>();
536 <        h = f.thenAcceptBoth(g, r = new FailingBiConsumer());
537 <        f.complete(3);
538 <        checkIncomplete(h);
539 <        g.complete(1);
540 <        checkCompletedWithWrappedCFException(h);
541 <
542 <        f = new CompletableFuture<>();
543 <        g = new CompletableFuture<>();
544 <        f.complete(3);
874 <        g.complete(1);
875 <        h = f.thenAcceptBoth(g, r = new FailingBiConsumer());
876 <        checkCompletedWithWrappedCFException(h);
534 >    class CompletableFutureInc extends CheckedIntegerAction
535 >        implements Function<Integer, CompletableFuture<Integer>>
536 >    {
537 >        CompletableFutureInc(ExecutionMode m) { super(m); }
538 >        public CompletableFuture<Integer> apply(Integer x) {
539 >            invoked();
540 >            value = x;
541 >            CompletableFuture<Integer> f = new CompletableFuture<>();
542 >            assertTrue(f.complete(inc(x)));
543 >            return f;
544 >        }
545      }
546  
547 <    /**
548 <     * thenAcceptBoth result completes exceptionally if either source cancelled
549 <     */
550 <    public void testThenAcceptBoth4() {
551 <        CompletableFuture<Integer> f, g;
552 <        CompletableFuture<Void> h;
553 <        SubtractAction r;
554 <
555 <        f = new CompletableFuture<>();
888 <        g = new CompletableFuture<>();
889 <        h = f.thenAcceptBoth(g, r = new SubtractAction());
890 <        assertTrue(f.cancel(true));
891 <        checkIncomplete(h);
892 <        g.complete(1);
893 <        checkCompletedWithWrappedCancellationException(h);
894 <
895 <        f = new CompletableFuture<>();
896 <        g = new CompletableFuture<>();
897 <        h = f.thenAcceptBoth(g, r = new SubtractAction());
898 <        assertTrue(g.cancel(true));
899 <        checkIncomplete(h);
900 <        f.complete(3);
901 <        checkCompletedWithWrappedCancellationException(h);
902 <
903 <        f = new CompletableFuture<>();
904 <        g = new CompletableFuture<>();
905 <        f.complete(3);
906 <        assertTrue(g.cancel(true));
907 <        h = f.thenAcceptBoth(g, r = new SubtractAction());
908 <        checkCompletedWithWrappedCancellationException(h);
909 <
910 <        f = new CompletableFuture<>();
911 <        g = new CompletableFuture<>();
912 <        assertTrue(f.cancel(true));
913 <        g.complete(3);
914 <        h = f.thenAcceptBoth(g, r = new SubtractAction());
915 <        checkCompletedWithWrappedCancellationException(h);
547 >    class FailingCompletableFutureFunction extends CheckedIntegerAction
548 >        implements Function<Integer, CompletableFuture<Integer>>
549 >    {
550 >        FailingCompletableFutureFunction(ExecutionMode m) { super(m); }
551 >        public CompletableFuture<Integer> apply(Integer x) {
552 >            invoked();
553 >            value = x;
554 >            throw new CFException();
555 >        }
556      }
557  
558 <    /**
559 <     * runAfterBoth result completes normally after normal
560 <     * completion of sources
561 <     */
562 <    public void testRunAfterBoth() {
563 <        CompletableFuture<Integer> f, g;
564 <        CompletableFuture<Void> h;
925 <        Noop r;
926 <
927 <        f = new CompletableFuture<>();
928 <        g = new CompletableFuture<>();
929 <        h = f.runAfterBoth(g, r = new Noop());
930 <        f.complete(3);
931 <        checkIncomplete(h);
932 <        g.complete(1);
933 <        checkCompletedNormally(h, null);
934 <        assertTrue(r.ran);
935 <
936 <        f = new CompletableFuture<>();
937 <        g = new CompletableFuture<>();
938 <        h = f.runAfterBoth(g, r = new Noop());
939 <        g.complete(1);
940 <        checkIncomplete(h);
941 <        f.complete(3);
942 <        checkCompletedNormally(h, null);
943 <        assertTrue(r.ran);
558 >    // Used for explicit executor tests
559 >    static final class ThreadExecutor implements Executor {
560 >        final AtomicInteger count = new AtomicInteger(0);
561 >        static final ThreadGroup tg = new ThreadGroup("ThreadExecutor");
562 >        static boolean startedCurrentThread() {
563 >            return Thread.currentThread().getThreadGroup() == tg;
564 >        }
565  
566 <        f = new CompletableFuture<>();
567 <        g = new CompletableFuture<>();
568 <        g.complete(1);
569 <        f.complete(3);
949 <        h = f.runAfterBoth(g, r = new Noop());
950 <        checkCompletedNormally(h, null);
951 <        assertTrue(r.ran);
566 >        public void execute(Runnable r) {
567 >            count.getAndIncrement();
568 >            new Thread(tg, r).start();
569 >        }
570      }
571  
572      /**
573 <     * runAfterBoth result completes exceptionally after exceptional
574 <     * completion of either source
573 >     * Permits the testing of parallel code for the 3 different
574 >     * execution modes without copy/pasting all the test methods.
575       */
576 <    public void testRunAfterBoth2() {
577 <        CompletableFuture<Integer> f, g;
578 <        CompletableFuture<Void> h;
579 <        Noop r;
580 <
581 <        f = new CompletableFuture<>();
582 <        g = new CompletableFuture<>();
583 <        h = f.runAfterBoth(g, r = new Noop());
584 <        f.completeExceptionally(new CFException());
585 <        checkIncomplete(h);
586 <        g.complete(1);
587 <        checkCompletedWithWrappedCFException(h);
588 <        assertFalse(r.ran);
589 <
590 <        f = new CompletableFuture<>();
591 <        g = new CompletableFuture<>();
592 <        h = f.runAfterBoth(g, r = new Noop());
593 <        g.completeExceptionally(new CFException());
594 <        checkIncomplete(h);
595 <        f.complete(3);
596 <        checkCompletedWithWrappedCFException(h);
597 <        assertFalse(r.ran);
598 <
599 <        f = new CompletableFuture<>();
600 <        g = new CompletableFuture<>();
601 <        g.completeExceptionally(new CFException());
602 <        f.complete(3);
603 <        h = f.runAfterBoth(g, r = new Noop());
604 <        checkCompletedWithWrappedCFException(h);
605 <        assertFalse(r.ran);
576 >    enum ExecutionMode {
577 >        DEFAULT {
578 >            public void checkExecutionMode() {
579 >                assertFalse(ThreadExecutor.startedCurrentThread());
580 >                assertNull(ForkJoinTask.getPool());
581 >            }
582 >            public CompletableFuture<Void> runAsync(Runnable a) {
583 >                throw new UnsupportedOperationException();
584 >            }
585 >            public <U> CompletableFuture<U> supplyAsync(Supplier<U> a) {
586 >                throw new UnsupportedOperationException();
587 >            }
588 >            public <T> CompletableFuture<Void> thenRun
589 >                (CompletableFuture<T> f, Runnable a) {
590 >                return f.thenRun(a);
591 >            }
592 >            public <T> CompletableFuture<Void> thenAccept
593 >                (CompletableFuture<T> f, Consumer<? super T> a) {
594 >                return f.thenAccept(a);
595 >            }
596 >            public <T,U> CompletableFuture<U> thenApply
597 >                (CompletableFuture<T> f, Function<? super T,U> a) {
598 >                return f.thenApply(a);
599 >            }
600 >            public <T,U> CompletableFuture<U> thenCompose
601 >                (CompletableFuture<T> f,
602 >                 Function<? super T,? extends CompletionStage<U>> a) {
603 >                return f.thenCompose(a);
604 >            }
605 >            public <T,U> CompletableFuture<U> handle
606 >                (CompletableFuture<T> f,
607 >                 BiFunction<? super T,Throwable,? extends U> a) {
608 >                return f.handle(a);
609 >            }
610 >            public <T> CompletableFuture<T> whenComplete
611 >                (CompletableFuture<T> f,
612 >                 BiConsumer<? super T,? super Throwable> a) {
613 >                return f.whenComplete(a);
614 >            }
615 >            public <T,U> CompletableFuture<Void> runAfterBoth
616 >                (CompletableFuture<T> f, CompletableFuture<U> g, Runnable a) {
617 >                return f.runAfterBoth(g, a);
618 >            }
619 >            public <T,U> CompletableFuture<Void> thenAcceptBoth
620 >                (CompletableFuture<T> f,
621 >                 CompletionStage<? extends U> g,
622 >                 BiConsumer<? super T,? super U> a) {
623 >                return f.thenAcceptBoth(g, a);
624 >            }
625 >            public <T,U,V> CompletableFuture<V> thenCombine
626 >                (CompletableFuture<T> f,
627 >                 CompletionStage<? extends U> g,
628 >                 BiFunction<? super T,? super U,? extends V> a) {
629 >                return f.thenCombine(g, a);
630 >            }
631 >            public <T> CompletableFuture<Void> runAfterEither
632 >                (CompletableFuture<T> f,
633 >                 CompletionStage<?> g,
634 >                 java.lang.Runnable a) {
635 >                return f.runAfterEither(g, a);
636 >            }
637 >            public <T> CompletableFuture<Void> acceptEither
638 >                (CompletableFuture<T> f,
639 >                 CompletionStage<? extends T> g,
640 >                 Consumer<? super T> a) {
641 >                return f.acceptEither(g, a);
642 >            }
643 >            public <T,U> CompletableFuture<U> applyToEither
644 >                (CompletableFuture<T> f,
645 >                 CompletionStage<? extends T> g,
646 >                 Function<? super T,U> a) {
647 >                return f.applyToEither(g, a);
648 >            }
649 >        },
650  
651 <        f = new CompletableFuture<>();
652 <        g = new CompletableFuture<>();
653 <        f.completeExceptionally(new CFException());
654 <        g.complete(1);
655 <        h = f.runAfterBoth(g, r = new Noop());
656 <        checkCompletedWithWrappedCFException(h);
657 <        assertFalse(r.ran);
658 <    }
651 >        ASYNC {
652 >            public void checkExecutionMode() {
653 >                assertSame(ForkJoinPool.commonPool(),
654 >                           ForkJoinTask.getPool());
655 >            }
656 >            public CompletableFuture<Void> runAsync(Runnable a) {
657 >                return CompletableFuture.runAsync(a);
658 >            }
659 >            public <U> CompletableFuture<U> supplyAsync(Supplier<U> a) {
660 >                return CompletableFuture.supplyAsync(a);
661 >            }
662 >            public <T> CompletableFuture<Void> thenRun
663 >                (CompletableFuture<T> f, Runnable a) {
664 >                return f.thenRunAsync(a);
665 >            }
666 >            public <T> CompletableFuture<Void> thenAccept
667 >                (CompletableFuture<T> f, Consumer<? super T> a) {
668 >                return f.thenAcceptAsync(a);
669 >            }
670 >            public <T,U> CompletableFuture<U> thenApply
671 >                (CompletableFuture<T> f, Function<? super T,U> a) {
672 >                return f.thenApplyAsync(a);
673 >            }
674 >            public <T,U> CompletableFuture<U> thenCompose
675 >                (CompletableFuture<T> f,
676 >                 Function<? super T,? extends CompletionStage<U>> a) {
677 >                return f.thenComposeAsync(a);
678 >            }
679 >            public <T,U> CompletableFuture<U> handle
680 >                (CompletableFuture<T> f,
681 >                 BiFunction<? super T,Throwable,? extends U> a) {
682 >                return f.handleAsync(a);
683 >            }
684 >            public <T> CompletableFuture<T> whenComplete
685 >                (CompletableFuture<T> f,
686 >                 BiConsumer<? super T,? super Throwable> a) {
687 >                return f.whenCompleteAsync(a);
688 >            }
689 >            public <T,U> CompletableFuture<Void> runAfterBoth
690 >                (CompletableFuture<T> f, CompletableFuture<U> g, Runnable a) {
691 >                return f.runAfterBothAsync(g, a);
692 >            }
693 >            public <T,U> CompletableFuture<Void> thenAcceptBoth
694 >                (CompletableFuture<T> f,
695 >                 CompletionStage<? extends U> g,
696 >                 BiConsumer<? super T,? super U> a) {
697 >                return f.thenAcceptBothAsync(g, a);
698 >            }
699 >            public <T,U,V> CompletableFuture<V> thenCombine
700 >                (CompletableFuture<T> f,
701 >                 CompletionStage<? extends U> g,
702 >                 BiFunction<? super T,? super U,? extends V> a) {
703 >                return f.thenCombineAsync(g, a);
704 >            }
705 >            public <T> CompletableFuture<Void> runAfterEither
706 >                (CompletableFuture<T> f,
707 >                 CompletionStage<?> g,
708 >                 java.lang.Runnable a) {
709 >                return f.runAfterEitherAsync(g, a);
710 >            }
711 >            public <T> CompletableFuture<Void> acceptEither
712 >                (CompletableFuture<T> f,
713 >                 CompletionStage<? extends T> g,
714 >                 Consumer<? super T> a) {
715 >                return f.acceptEitherAsync(g, a);
716 >            }
717 >            public <T,U> CompletableFuture<U> applyToEither
718 >                (CompletableFuture<T> f,
719 >                 CompletionStage<? extends T> g,
720 >                 Function<? super T,U> a) {
721 >                return f.applyToEitherAsync(g, a);
722 >            }
723 >        },
724  
725 <    /**
726 <     * runAfterBoth result completes exceptionally if action does
727 <     */
728 <    public void testRunAfterBoth3() {
729 <        CompletableFuture<Integer> f = new CompletableFuture<>();
730 <        CompletableFuture<Integer> f2 = new CompletableFuture<>();
731 <        FailingNoop r = new FailingNoop();
732 <        CompletableFuture<Void> g = f.runAfterBoth(f2, r);
733 <        f.complete(one);
734 <        checkIncomplete(g);
735 <        f2.complete(two);
736 <        checkCompletedWithWrappedCFException(g);
737 <    }
725 >        EXECUTOR {
726 >            public void checkExecutionMode() {
727 >                assertTrue(ThreadExecutor.startedCurrentThread());
728 >            }
729 >            public CompletableFuture<Void> runAsync(Runnable a) {
730 >                return CompletableFuture.runAsync(a, new ThreadExecutor());
731 >            }
732 >            public <U> CompletableFuture<U> supplyAsync(Supplier<U> a) {
733 >                return CompletableFuture.supplyAsync(a, new ThreadExecutor());
734 >            }
735 >            public <T> CompletableFuture<Void> thenRun
736 >                (CompletableFuture<T> f, Runnable a) {
737 >                return f.thenRunAsync(a, new ThreadExecutor());
738 >            }
739 >            public <T> CompletableFuture<Void> thenAccept
740 >                (CompletableFuture<T> f, Consumer<? super T> a) {
741 >                return f.thenAcceptAsync(a, new ThreadExecutor());
742 >            }
743 >            public <T,U> CompletableFuture<U> thenApply
744 >                (CompletableFuture<T> f, Function<? super T,U> a) {
745 >                return f.thenApplyAsync(a, new ThreadExecutor());
746 >            }
747 >            public <T,U> CompletableFuture<U> thenCompose
748 >                (CompletableFuture<T> f,
749 >                 Function<? super T,? extends CompletionStage<U>> a) {
750 >                return f.thenComposeAsync(a, new ThreadExecutor());
751 >            }
752 >            public <T,U> CompletableFuture<U> handle
753 >                (CompletableFuture<T> f,
754 >                 BiFunction<? super T,Throwable,? extends U> a) {
755 >                return f.handleAsync(a, new ThreadExecutor());
756 >            }
757 >            public <T> CompletableFuture<T> whenComplete
758 >                (CompletableFuture<T> f,
759 >                 BiConsumer<? super T,? super Throwable> a) {
760 >                return f.whenCompleteAsync(a, new ThreadExecutor());
761 >            }
762 >            public <T,U> CompletableFuture<Void> runAfterBoth
763 >                (CompletableFuture<T> f, CompletableFuture<U> g, Runnable a) {
764 >                return f.runAfterBothAsync(g, a, new ThreadExecutor());
765 >            }
766 >            public <T,U> CompletableFuture<Void> thenAcceptBoth
767 >                (CompletableFuture<T> f,
768 >                 CompletionStage<? extends U> g,
769 >                 BiConsumer<? super T,? super U> a) {
770 >                return f.thenAcceptBothAsync(g, a, new ThreadExecutor());
771 >            }
772 >            public <T,U,V> CompletableFuture<V> thenCombine
773 >                (CompletableFuture<T> f,
774 >                 CompletionStage<? extends U> g,
775 >                 BiFunction<? super T,? super U,? extends V> a) {
776 >                return f.thenCombineAsync(g, a, new ThreadExecutor());
777 >            }
778 >            public <T> CompletableFuture<Void> runAfterEither
779 >                (CompletableFuture<T> f,
780 >                 CompletionStage<?> g,
781 >                 java.lang.Runnable a) {
782 >                return f.runAfterEitherAsync(g, a, new ThreadExecutor());
783 >            }
784 >            public <T> CompletableFuture<Void> acceptEither
785 >                (CompletableFuture<T> f,
786 >                 CompletionStage<? extends T> g,
787 >                 Consumer<? super T> a) {
788 >                return f.acceptEitherAsync(g, a, new ThreadExecutor());
789 >            }
790 >            public <T,U> CompletableFuture<U> applyToEither
791 >                (CompletableFuture<T> f,
792 >                 CompletionStage<? extends T> g,
793 >                 Function<? super T,U> a) {
794 >                return f.applyToEitherAsync(g, a, new ThreadExecutor());
795 >            }
796 >        };
797  
798 <    /**
799 <     * runAfterBoth result completes exceptionally if either source cancelled
800 <     */
801 <    public void testRunAfterBoth4() {
802 <        CompletableFuture<Integer> f = new CompletableFuture<>();
803 <        CompletableFuture<Integer> f2 = new CompletableFuture<>();
804 <        Noop r = new Noop();
805 <        CompletableFuture<Void> g = f.runAfterBoth(f2, r);
806 <        assertTrue(f.cancel(true));
807 <        f2.complete(two);
808 <        checkCompletedWithWrappedCancellationException(g);
809 <        f = new CompletableFuture<>();
810 <        f2 = new CompletableFuture<>();
811 <        r = new Noop();
812 <        g = f.runAfterBoth(f2, r);
813 <        f.complete(one);
814 <        assertTrue(f2.cancel(true));
815 <        checkCompletedWithWrappedCancellationException(g);
816 <    }
798 >        public abstract void checkExecutionMode();
799 >        public abstract CompletableFuture<Void> runAsync(Runnable a);
800 >        public abstract <U> CompletableFuture<U> supplyAsync(Supplier<U> a);
801 >        public abstract <T> CompletableFuture<Void> thenRun
802 >            (CompletableFuture<T> f, Runnable a);
803 >        public abstract <T> CompletableFuture<Void> thenAccept
804 >            (CompletableFuture<T> f, Consumer<? super T> a);
805 >        public abstract <T,U> CompletableFuture<U> thenApply
806 >            (CompletableFuture<T> f, Function<? super T,U> a);
807 >        public abstract <T,U> CompletableFuture<U> thenCompose
808 >            (CompletableFuture<T> f,
809 >             Function<? super T,? extends CompletionStage<U>> a);
810 >        public abstract <T,U> CompletableFuture<U> handle
811 >            (CompletableFuture<T> f,
812 >             BiFunction<? super T,Throwable,? extends U> a);
813 >        public abstract <T> CompletableFuture<T> whenComplete
814 >            (CompletableFuture<T> f,
815 >             BiConsumer<? super T,? super Throwable> a);
816 >        public abstract <T,U> CompletableFuture<Void> runAfterBoth
817 >            (CompletableFuture<T> f, CompletableFuture<U> g, Runnable a);
818 >        public abstract <T,U> CompletableFuture<Void> thenAcceptBoth
819 >            (CompletableFuture<T> f,
820 >             CompletionStage<? extends U> g,
821 >             BiConsumer<? super T,? super U> a);
822 >        public abstract <T,U,V> CompletableFuture<V> thenCombine
823 >            (CompletableFuture<T> f,
824 >             CompletionStage<? extends U> g,
825 >             BiFunction<? super T,? super U,? extends V> a);
826 >        public abstract <T> CompletableFuture<Void> runAfterEither
827 >            (CompletableFuture<T> f,
828 >             CompletionStage<?> g,
829 >             java.lang.Runnable a);
830 >        public abstract <T> CompletableFuture<Void> acceptEither
831 >            (CompletableFuture<T> f,
832 >             CompletionStage<? extends T> g,
833 >             Consumer<? super T> a);
834 >        public abstract <T,U> CompletableFuture<U> applyToEither
835 >            (CompletableFuture<T> f,
836 >             CompletionStage<? extends T> g,
837 >             Function<? super T,U> a);
838 >    }
839 >
840 >    /**
841 >     * exceptionally action is not invoked when source completes
842 >     * normally, and source result is propagated
843 >     */
844 >    public void testExceptionally_normalCompletion() {
845 >        for (boolean createIncomplete : new boolean[] { true, false })
846 >        for (Integer v1 : new Integer[] { 1, null })
847 >    {
848 >        final AtomicInteger a = new AtomicInteger(0);
849 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
850 >        if (!createIncomplete) assertTrue(f.complete(v1));
851 >        final CompletableFuture<Integer> g = f.exceptionally
852 >            ((Throwable t) -> {
853 >                // Should not be called
854 >                a.getAndIncrement();
855 >                throw new AssertionError();
856 >            });
857 >        if (createIncomplete) assertTrue(f.complete(v1));
858 >
859 >        checkCompletedNormally(g, v1);
860 >        checkCompletedNormally(f, v1);
861 >        assertEquals(0, a.get());
862 >    }}
863  
864      /**
865 <     * applyToEither result completes normally after normal completion
866 <     * of either source
865 >     * exceptionally action completes with function value on source
866 >     * exception
867       */
868 <    public void testApplyToEither() {
869 <        CompletableFuture<Integer> f = new CompletableFuture<>();
870 <        CompletableFuture<Integer> f2 = new CompletableFuture<>();
871 <        CompletableFuture<Integer> g = f.applyToEither(f2, inc);
872 <        f.complete(one);
873 <        checkCompletedNormally(g, two);
874 <        f2.complete(one);
875 <        checkCompletedNormally(g, two);
876 <
877 <        f = new CompletableFuture<>();
878 <        f.complete(one);
879 <        f2 = new CompletableFuture<>();
880 <        g = f.applyToEither(f2, inc);
881 <        checkCompletedNormally(g, two);
882 <    }
868 >    public void testExceptionally_exceptionalCompletion() {
869 >        for (boolean createIncomplete : new boolean[] { true, false })
870 >        for (Integer v1 : new Integer[] { 1, null })
871 >    {
872 >        final AtomicInteger a = new AtomicInteger(0);
873 >        final CFException ex = new CFException();
874 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
875 >        if (!createIncomplete) f.completeExceptionally(ex);
876 >        final CompletableFuture<Integer> g = f.exceptionally
877 >            ((Throwable t) -> {
878 >                ExecutionMode.DEFAULT.checkExecutionMode();
879 >                threadAssertSame(t, ex);
880 >                a.getAndIncrement();
881 >                return v1;
882 >            });
883 >        if (createIncomplete) f.completeExceptionally(ex);
884 >
885 >        checkCompletedNormally(g, v1);
886 >        assertEquals(1, a.get());
887 >    }}
888 >
889 >    public void testExceptionally_exceptionalCompletionActionFailed() {
890 >        for (boolean createIncomplete : new boolean[] { true, false })
891 >        for (Integer v1 : new Integer[] { 1, null })
892 >    {
893 >        final AtomicInteger a = new AtomicInteger(0);
894 >        final CFException ex1 = new CFException();
895 >        final CFException ex2 = new CFException();
896 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
897 >        if (!createIncomplete) f.completeExceptionally(ex1);
898 >        final CompletableFuture<Integer> g = f.exceptionally
899 >            ((Throwable t) -> {
900 >                ExecutionMode.DEFAULT.checkExecutionMode();
901 >                threadAssertSame(t, ex1);
902 >                a.getAndIncrement();
903 >                throw ex2;
904 >            });
905 >        if (createIncomplete) f.completeExceptionally(ex1);
906 >
907 >        checkCompletedWithWrappedException(g, ex2);
908 >        assertEquals(1, a.get());
909 >    }}
910  
911      /**
912 <     * applyToEither result completes exceptionally after exceptional
913 <     * completion of either source
912 >     * whenComplete action executes on normal completion, propagating
913 >     * source result.
914       */
915 <    public void testApplyToEither2() {
916 <        CompletableFuture<Integer> f = new CompletableFuture<>();
917 <        CompletableFuture<Integer> f2 = new CompletableFuture<>();
918 <        CompletableFuture<Integer> g = f.applyToEither(f2, inc);
919 <        f.completeExceptionally(new CFException());
920 <        f2.complete(one);
921 <        checkCompletedWithWrappedCFException(g);
922 <
923 <        f = new CompletableFuture<>();
924 <        f2 = new CompletableFuture<>();
925 <        f2.completeExceptionally(new CFException());
926 <        g = f.applyToEither(f2, inc);
927 <        checkCompletedWithWrappedCFException(g);
928 <    }
915 >    public void testWhenComplete_normalCompletion1() {
916 >        for (ExecutionMode m : ExecutionMode.values())
917 >        for (boolean createIncomplete : new boolean[] { true, false })
918 >        for (Integer v1 : new Integer[] { 1, null })
919 >    {
920 >        final AtomicInteger a = new AtomicInteger(0);
921 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
922 >        if (!createIncomplete) assertTrue(f.complete(v1));
923 >        final CompletableFuture<Integer> g = m.whenComplete
924 >            (f,
925 >             (Integer x, Throwable t) -> {
926 >                m.checkExecutionMode();
927 >                threadAssertSame(x, v1);
928 >                threadAssertNull(t);
929 >                a.getAndIncrement();
930 >            });
931 >        if (createIncomplete) assertTrue(f.complete(v1));
932 >
933 >        checkCompletedNormally(g, v1);
934 >        checkCompletedNormally(f, v1);
935 >        assertEquals(1, a.get());
936 >    }}
937  
938      /**
939 <     * applyToEither result completes exceptionally if action does
939 >     * whenComplete action executes on exceptional completion, propagating
940 >     * source result.
941       */
942 <    public void testApplyToEither3() {
943 <        CompletableFuture<Integer> f = new CompletableFuture<>();
944 <        CompletableFuture<Integer> f2 = new CompletableFuture<>();
945 <        FailingFunction r = new FailingFunction();
946 <        CompletableFuture<Integer> g = f.applyToEither(f2, r);
947 <        f2.complete(two);
948 <        checkCompletedWithWrappedCFException(g);
949 <    }
942 >    public void testWhenComplete_exceptionalCompletion() {
943 >        for (ExecutionMode m : ExecutionMode.values())
944 >        for (boolean createIncomplete : new boolean[] { true, false })
945 >        for (Integer v1 : new Integer[] { 1, null })
946 >    {
947 >        final AtomicInteger a = new AtomicInteger(0);
948 >        final CFException ex = new CFException();
949 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
950 >        if (!createIncomplete) f.completeExceptionally(ex);
951 >        final CompletableFuture<Integer> g = m.whenComplete
952 >            (f,
953 >             (Integer x, Throwable t) -> {
954 >                m.checkExecutionMode();
955 >                threadAssertNull(x);
956 >                threadAssertSame(t, ex);
957 >                a.getAndIncrement();
958 >            });
959 >        if (createIncomplete) f.completeExceptionally(ex);
960 >
961 >        checkCompletedWithWrappedException(g, ex);
962 >        checkCompletedExceptionally(f, ex);
963 >        assertEquals(1, a.get());
964 >    }}
965 >
966 >    /**
967 >     * whenComplete action executes on cancelled source, propagating
968 >     * CancellationException.
969 >     */
970 >    public void testWhenComplete_sourceCancelled() {
971 >        for (ExecutionMode m : ExecutionMode.values())
972 >        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
973 >        for (boolean createIncomplete : new boolean[] { true, false })
974 >    {
975 >        final AtomicInteger a = new AtomicInteger(0);
976 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
977 >        if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
978 >        final CompletableFuture<Integer> g = m.whenComplete
979 >            (f,
980 >             (Integer x, Throwable t) -> {
981 >                m.checkExecutionMode();
982 >                threadAssertNull(x);
983 >                threadAssertTrue(t instanceof CancellationException);
984 >                a.getAndIncrement();
985 >            });
986 >        if (createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
987  
1083    /**
1084     * applyToEither result completes exceptionally if either source cancelled
1085     */
1086    public void testApplyToEither4() {
1087        CompletableFuture<Integer> f = new CompletableFuture<>();
1088        CompletableFuture<Integer> f2 = new CompletableFuture<>();
1089        CompletableFuture<Integer> g = f.applyToEither(f2, inc);
1090        assertTrue(f.cancel(true));
988          checkCompletedWithWrappedCancellationException(g);
989 <        f = new CompletableFuture<>();
990 <        f2 = new CompletableFuture<>();
991 <        assertTrue(f2.cancel(true));
1095 <        checkCompletedWithWrappedCancellationException(g);
1096 <    }
1097 <
1098 <    /**
1099 <     * acceptEither result completes normally after normal completion
1100 <     * of either source
1101 <     */
1102 <    public void testAcceptEither() {
1103 <        CompletableFuture<Integer> f = new CompletableFuture<>();
1104 <        CompletableFuture<Integer> f2 = new CompletableFuture<>();
1105 <        IncAction r = new IncAction();
1106 <        CompletableFuture<Void> g = f.acceptEither(f2, r);
1107 <        f.complete(one);
1108 <        checkCompletedNormally(g, null);
1109 <        f2.complete(one);
1110 <        checkCompletedNormally(g, null);
1111 <        assertEquals(r.value, 2);
1112 <
1113 <        r = new IncAction();
1114 <        f = new CompletableFuture<>();
1115 <        f.complete(one);
1116 <        f2 = new CompletableFuture<>();
1117 <        g = f.acceptEither(f2, r);
1118 <        checkCompletedNormally(g, null);
1119 <        assertEquals(r.value, 2);
1120 <    }
1121 <
1122 <    /**
1123 <     * acceptEither result completes exceptionally after exceptional
1124 <     * completion of either source
1125 <     */
1126 <    public void testAcceptEither2() {
1127 <        CompletableFuture<Integer> f = new CompletableFuture<>();
1128 <        CompletableFuture<Integer> f2 = new CompletableFuture<>();
1129 <        IncAction r = new IncAction();
1130 <        CompletableFuture<Void> g = f.acceptEither(f2, r);
1131 <        f.completeExceptionally(new CFException());
1132 <        f2.complete(one);
1133 <        checkCompletedWithWrappedCFException(g);
1134 <
1135 <        r = new IncAction();
1136 <        f = new CompletableFuture<>();
1137 <        f2 = new CompletableFuture<>();
1138 <        f2.completeExceptionally(new CFException());
1139 <        g = f.acceptEither(f2, r);
1140 <        checkCompletedWithWrappedCFException(g);
1141 <    }
1142 <
1143 <    /**
1144 <     * acceptEither result completes exceptionally if action does
1145 <     */
1146 <    public void testAcceptEither3() {
1147 <        CompletableFuture<Integer> f = new CompletableFuture<>();
1148 <        CompletableFuture<Integer> f2 = new CompletableFuture<>();
1149 <        FailingConsumer r = new FailingConsumer();
1150 <        CompletableFuture<Void> g = f.acceptEither(f2, r);
1151 <        f2.complete(two);
1152 <        checkCompletedWithWrappedCFException(g);
1153 <    }
989 >        checkCancelled(f);
990 >        assertEquals(1, a.get());
991 >    }}
992  
993      /**
994 <     * acceptEither result completes exceptionally if either source cancelled
994 >     * If a whenComplete action throws an exception when triggered by
995 >     * a normal completion, it completes exceptionally
996       */
997 <    public void testAcceptEither4() {
998 <        CompletableFuture<Integer> f = new CompletableFuture<>();
999 <        CompletableFuture<Integer> f2 = new CompletableFuture<>();
1000 <        IncAction r = new IncAction();
1001 <        CompletableFuture<Void> g = f.acceptEither(f2, r);
1002 <        assertTrue(f.cancel(true));
1003 <        checkCompletedWithWrappedCancellationException(g);
1004 <        f = new CompletableFuture<>();
1005 <        f2 = new CompletableFuture<>();
1006 <        assertTrue(f2.cancel(true));
1007 <        checkCompletedWithWrappedCancellationException(g);
1008 <    }
997 >    public void testWhenComplete_actionFailed() {
998 >        for (boolean createIncomplete : new boolean[] { true, false })
999 >        for (ExecutionMode m : ExecutionMode.values())
1000 >        for (Integer v1 : new Integer[] { 1, null })
1001 >    {
1002 >        final AtomicInteger a = new AtomicInteger(0);
1003 >        final CFException ex = new CFException();
1004 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1005 >        if (!createIncomplete) assertTrue(f.complete(v1));
1006 >        final CompletableFuture<Integer> g = m.whenComplete
1007 >            (f,
1008 >             (Integer x, Throwable t) -> {
1009 >                m.checkExecutionMode();
1010 >                threadAssertSame(x, v1);
1011 >                threadAssertNull(t);
1012 >                a.getAndIncrement();
1013 >                throw ex;
1014 >            });
1015 >        if (createIncomplete) assertTrue(f.complete(v1));
1016 >
1017 >        checkCompletedWithWrappedException(g, ex);
1018 >        checkCompletedNormally(f, v1);
1019 >        assertEquals(1, a.get());
1020 >    }}
1021  
1022      /**
1023 <     * runAfterEither result completes normally after normal completion
1024 <     * of either source
1023 >     * If a whenComplete action throws an exception when triggered by
1024 >     * a source completion that also throws an exception, the source
1025 >     * exception takes precedence.
1026       */
1027 <    public void testRunAfterEither() {
1028 <        CompletableFuture<Integer> f = new CompletableFuture<>();
1029 <        CompletableFuture<Integer> f2 = new CompletableFuture<>();
1030 <        Noop r = new Noop();
1031 <        CompletableFuture<Void> g = f.runAfterEither(f2, r);
1032 <        f.complete(one);
1033 <        checkCompletedNormally(g, null);
1034 <        f2.complete(one);
1035 <        checkCompletedNormally(g, null);
1036 <        assertTrue(r.ran);
1037 <
1038 <        r = new Noop();
1039 <        f = new CompletableFuture<>();
1040 <        f.complete(one);
1041 <        f2 = new CompletableFuture<>();
1042 <        g = f.runAfterEither(f2, r);
1043 <        checkCompletedNormally(g, null);
1044 <        assertTrue(r.ran);
1045 <    }
1027 >    public void testWhenComplete_actionFailedSourceFailed() {
1028 >        for (boolean createIncomplete : new boolean[] { true, false })
1029 >        for (ExecutionMode m : ExecutionMode.values())
1030 >        for (Integer v1 : new Integer[] { 1, null })
1031 >    {
1032 >        final AtomicInteger a = new AtomicInteger(0);
1033 >        final CFException ex1 = new CFException();
1034 >        final CFException ex2 = new CFException();
1035 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1036 >
1037 >        if (!createIncomplete) f.completeExceptionally(ex1);
1038 >        final CompletableFuture<Integer> g = m.whenComplete
1039 >            (f,
1040 >             (Integer x, Throwable t) -> {
1041 >                m.checkExecutionMode();
1042 >                threadAssertSame(t, ex1);
1043 >                threadAssertNull(x);
1044 >                a.getAndIncrement();
1045 >                throw ex2;
1046 >            });
1047 >        if (createIncomplete) f.completeExceptionally(ex1);
1048 >
1049 >        checkCompletedWithWrappedException(g, ex1);
1050 >        checkCompletedExceptionally(f, ex1);
1051 >        assertEquals(1, a.get());
1052 >    }}
1053 >
1054 >    /**
1055 >     * handle action completes normally with function value on normal
1056 >     * completion of source
1057 >     */
1058 >    public void testHandle_normalCompletion() {
1059 >        for (ExecutionMode m : ExecutionMode.values())
1060 >        for (boolean createIncomplete : new boolean[] { true, false })
1061 >        for (Integer v1 : new Integer[] { 1, null })
1062 >    {
1063 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1064 >        final AtomicInteger a = new AtomicInteger(0);
1065 >        if (!createIncomplete) assertTrue(f.complete(v1));
1066 >        final CompletableFuture<Integer> g = m.handle
1067 >            (f,
1068 >             (Integer x, Throwable t) -> {
1069 >                m.checkExecutionMode();
1070 >                threadAssertSame(x, v1);
1071 >                threadAssertNull(t);
1072 >                a.getAndIncrement();
1073 >                return inc(v1);
1074 >            });
1075 >        if (createIncomplete) assertTrue(f.complete(v1));
1076 >
1077 >        checkCompletedNormally(g, inc(v1));
1078 >        checkCompletedNormally(f, v1);
1079 >        assertEquals(1, a.get());
1080 >    }}
1081  
1082      /**
1083 <     * runAfterEither result completes exceptionally after exceptional
1084 <     * completion of either source
1083 >     * handle action completes normally with function value on
1084 >     * exceptional completion of source
1085       */
1086 <    public void testRunAfterEither2() {
1087 <        CompletableFuture<Integer> f = new CompletableFuture<>();
1088 <        CompletableFuture<Integer> f2 = new CompletableFuture<>();
1089 <        Noop r = new Noop();
1090 <        CompletableFuture<Void> g = f.runAfterEither(f2, r);
1091 <        f.completeExceptionally(new CFException());
1092 <        f2.complete(one);
1093 <        checkCompletedWithWrappedCFException(g);
1094 <
1095 <        r = new Noop();
1096 <        f = new CompletableFuture<>();
1097 <        f2 = new CompletableFuture<>();
1098 <        f2.completeExceptionally(new CFException());
1099 <        g = f.runAfterEither(f2, r);
1100 <        checkCompletedWithWrappedCFException(g);
1101 <    }
1086 >    public void testHandle_exceptionalCompletion() {
1087 >        for (ExecutionMode m : ExecutionMode.values())
1088 >        for (boolean createIncomplete : new boolean[] { true, false })
1089 >        for (Integer v1 : new Integer[] { 1, null })
1090 >    {
1091 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1092 >        final AtomicInteger a = new AtomicInteger(0);
1093 >        final CFException ex = new CFException();
1094 >        if (!createIncomplete) f.completeExceptionally(ex);
1095 >        final CompletableFuture<Integer> g = m.handle
1096 >            (f,
1097 >             (Integer x, Throwable t) -> {
1098 >                m.checkExecutionMode();
1099 >                threadAssertNull(x);
1100 >                threadAssertSame(t, ex);
1101 >                a.getAndIncrement();
1102 >                return v1;
1103 >            });
1104 >        if (createIncomplete) f.completeExceptionally(ex);
1105 >
1106 >        checkCompletedNormally(g, v1);
1107 >        checkCompletedExceptionally(f, ex);
1108 >        assertEquals(1, a.get());
1109 >    }}
1110 >
1111 >    /**
1112 >     * handle action completes normally with function value on
1113 >     * cancelled source
1114 >     */
1115 >    public void testHandle_sourceCancelled() {
1116 >        for (ExecutionMode m : ExecutionMode.values())
1117 >        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1118 >        for (boolean createIncomplete : new boolean[] { true, false })
1119 >        for (Integer v1 : new Integer[] { 1, null })
1120 >    {
1121 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1122 >        final AtomicInteger a = new AtomicInteger(0);
1123 >        if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
1124 >        final CompletableFuture<Integer> g = m.handle
1125 >            (f,
1126 >             (Integer x, Throwable t) -> {
1127 >                m.checkExecutionMode();
1128 >                threadAssertNull(x);
1129 >                threadAssertTrue(t instanceof CancellationException);
1130 >                a.getAndIncrement();
1131 >                return v1;
1132 >            });
1133 >        if (createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
1134  
1135 <    /**
1136 <     * runAfterEither result completes exceptionally if action does
1137 <     */
1138 <    public void testRunAfterEither3() {
1220 <        CompletableFuture<Integer> f = new CompletableFuture<>();
1221 <        CompletableFuture<Integer> f2 = new CompletableFuture<>();
1222 <        FailingNoop r = new FailingNoop();
1223 <        CompletableFuture<Void> g = f.runAfterEither(f2, r);
1224 <        f2.complete(two);
1225 <        checkCompletedWithWrappedCFException(g);
1226 <    }
1135 >        checkCompletedNormally(g, v1);
1136 >        checkCancelled(f);
1137 >        assertEquals(1, a.get());
1138 >    }}
1139  
1140      /**
1141 <     * runAfterEither result completes exceptionally if either source cancelled
1141 >     * handle result completes exceptionally if action does
1142       */
1143 <    public void testRunAfterEither4() {
1144 <        CompletableFuture<Integer> f = new CompletableFuture<>();
1145 <        CompletableFuture<Integer> f2 = new CompletableFuture<>();
1146 <        Noop r = new Noop();
1147 <        CompletableFuture<Void> g = f.runAfterEither(f2, r);
1148 <        assertTrue(f.cancel(true));
1149 <        checkCompletedWithWrappedCancellationException(g);
1150 <        f = new CompletableFuture<>();
1151 <        f2 = new CompletableFuture<>();
1152 <        assertTrue(f2.cancel(true));
1153 <        checkCompletedWithWrappedCancellationException(g);
1154 <    }
1143 >    public void testHandle_sourceFailedActionFailed() {
1144 >        for (ExecutionMode m : ExecutionMode.values())
1145 >        for (boolean createIncomplete : new boolean[] { true, false })
1146 >    {
1147 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1148 >        final AtomicInteger a = new AtomicInteger(0);
1149 >        final CFException ex1 = new CFException();
1150 >        final CFException ex2 = new CFException();
1151 >        if (!createIncomplete) f.completeExceptionally(ex1);
1152 >        final CompletableFuture<Integer> g = m.handle
1153 >            (f,
1154 >             (Integer x, Throwable t) -> {
1155 >                m.checkExecutionMode();
1156 >                threadAssertNull(x);
1157 >                threadAssertSame(ex1, t);
1158 >                a.getAndIncrement();
1159 >                throw ex2;
1160 >            });
1161 >        if (createIncomplete) f.completeExceptionally(ex1);
1162 >
1163 >        checkCompletedWithWrappedException(g, ex2);
1164 >        checkCompletedExceptionally(f, ex1);
1165 >        assertEquals(1, a.get());
1166 >    }}
1167 >
1168 >    public void testHandle_sourceCompletedNormallyActionFailed() {
1169 >        for (ExecutionMode m : ExecutionMode.values())
1170 >        for (boolean createIncomplete : new boolean[] { true, false })
1171 >        for (Integer v1 : new Integer[] { 1, null })
1172 >    {
1173 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1174 >        final AtomicInteger a = new AtomicInteger(0);
1175 >        final CFException ex = new CFException();
1176 >        if (!createIncomplete) assertTrue(f.complete(v1));
1177 >        final CompletableFuture<Integer> g = m.handle
1178 >            (f,
1179 >             (Integer x, Throwable t) -> {
1180 >                m.checkExecutionMode();
1181 >                threadAssertSame(x, v1);
1182 >                threadAssertNull(t);
1183 >                a.getAndIncrement();
1184 >                throw ex;
1185 >            });
1186 >        if (createIncomplete) assertTrue(f.complete(v1));
1187 >
1188 >        checkCompletedWithWrappedException(g, ex);
1189 >        checkCompletedNormally(f, v1);
1190 >        assertEquals(1, a.get());
1191 >    }}
1192  
1193      /**
1194 <     * thenCompose result completes normally after normal completion of source
1194 >     * runAsync completes after running Runnable
1195       */
1196 <    public void testThenCompose() {
1197 <        CompletableFuture<Integer> f, g;
1198 <        CompletableFutureInc r;
1199 <
1200 <        f = new CompletableFuture<>();
1201 <        g = f.thenCompose(r = new CompletableFutureInc());
1202 <        f.complete(one);
1203 <        checkCompletedNormally(g, two);
1204 <        assertTrue(r.ran);
1205 <
1206 <        f = new CompletableFuture<>();
1207 <        f.complete(one);
1208 <        g = f.thenCompose(r = new CompletableFutureInc());
1260 <        checkCompletedNormally(g, two);
1261 <        assertTrue(r.ran);
1262 <    }
1196 >    public void testRunAsync_normalCompletion() {
1197 >        ExecutionMode[] executionModes = {
1198 >            ExecutionMode.ASYNC,
1199 >            ExecutionMode.EXECUTOR,
1200 >        };
1201 >        for (ExecutionMode m : executionModes)
1202 >    {
1203 >        final Noop r = new Noop(m);
1204 >        final CompletableFuture<Void> f = m.runAsync(r);
1205 >        assertNull(f.join());
1206 >        checkCompletedNormally(f, null);
1207 >        r.assertInvoked();
1208 >    }}
1209  
1210      /**
1211 <     * thenCompose result completes exceptionally after exceptional
1266 <     * completion of source
1211 >     * failing runAsync completes exceptionally after running Runnable
1212       */
1213 <    public void testThenCompose2() {
1214 <        CompletableFuture<Integer> f, g;
1215 <        CompletableFutureInc r;
1216 <
1217 <        f = new CompletableFuture<>();
1218 <        g = f.thenCompose(r = new CompletableFutureInc());
1219 <        f.completeExceptionally(new CFException());
1220 <        checkCompletedWithWrappedCFException(g);
1221 <
1222 <        f = new CompletableFuture<>();
1223 <        f.completeExceptionally(new CFException());
1224 <        g = f.thenCompose(r = new CompletableFutureInc());
1280 <        checkCompletedWithWrappedCFException(g);
1281 <    }
1213 >    public void testRunAsync_exceptionalCompletion() {
1214 >        ExecutionMode[] executionModes = {
1215 >            ExecutionMode.ASYNC,
1216 >            ExecutionMode.EXECUTOR,
1217 >        };
1218 >        for (ExecutionMode m : executionModes)
1219 >    {
1220 >        final FailingRunnable r = new FailingRunnable(m);
1221 >        final CompletableFuture<Void> f = m.runAsync(r);
1222 >        checkCompletedWithWrappedCFException(f);
1223 >        r.assertInvoked();
1224 >    }}
1225  
1226      /**
1227 <     * thenCompose result completes exceptionally if action does
1227 >     * supplyAsync completes with result of supplier
1228       */
1229 <    public void testThenCompose3() {
1230 <        CompletableFuture<Integer> f, g;
1231 <        FailingCompletableFutureFunction r;
1232 <
1233 <        f = new CompletableFuture<>();
1234 <        g = f.thenCompose(r = new FailingCompletableFutureFunction());
1235 <        f.complete(one);
1236 <        checkCompletedWithWrappedCFException(g);
1237 <
1238 <        f = new CompletableFuture<>();
1239 <        f.complete(one);
1240 <        g = f.thenCompose(r = new FailingCompletableFutureFunction());
1241 <        checkCompletedWithWrappedCFException(g);
1242 <    }
1229 >    public void testSupplyAsync_normalCompletion() {
1230 >        ExecutionMode[] executionModes = {
1231 >            ExecutionMode.ASYNC,
1232 >            ExecutionMode.EXECUTOR,
1233 >        };
1234 >        for (ExecutionMode m : executionModes)
1235 >        for (Integer v1 : new Integer[] { 1, null })
1236 >    {
1237 >        final IntegerSupplier r = new IntegerSupplier(m, v1);
1238 >        final CompletableFuture<Integer> f = m.supplyAsync(r);
1239 >        assertSame(v1, f.join());
1240 >        checkCompletedNormally(f, v1);
1241 >        r.assertInvoked();
1242 >    }}
1243  
1244      /**
1245 <     * thenCompose result completes exceptionally if source cancelled
1245 >     * Failing supplyAsync completes exceptionally
1246       */
1247 <    public void testThenCompose4() {
1248 <        CompletableFuture<Integer> f, g;
1249 <        CompletableFutureInc r;
1250 <
1251 <        f = new CompletableFuture<>();
1252 <        g = f.thenCompose(r = new CompletableFutureInc());
1253 <        assertTrue(f.cancel(true));
1254 <        checkCompletedWithWrappedCancellationException(g);
1255 <
1256 <        f = new CompletableFuture<>();
1257 <        assertTrue(f.cancel(true));
1258 <        g = f.thenCompose(r = new CompletableFutureInc());
1316 <        checkCompletedWithWrappedCancellationException(g);
1317 <    }
1247 >    public void testSupplyAsync_exceptionalCompletion() {
1248 >        ExecutionMode[] executionModes = {
1249 >            ExecutionMode.ASYNC,
1250 >            ExecutionMode.EXECUTOR,
1251 >        };
1252 >        for (ExecutionMode m : executionModes)
1253 >    {
1254 >        FailingSupplier r = new FailingSupplier(m);
1255 >        CompletableFuture<Integer> f = m.supplyAsync(r);
1256 >        checkCompletedWithWrappedCFException(f);
1257 >        r.assertInvoked();
1258 >    }}
1259  
1260 <    // asyncs
1260 >    // seq completion methods
1261  
1262      /**
1263 <     * thenRunAsync result completes normally after normal completion of source
1263 >     * thenRun result completes normally after normal completion of source
1264       */
1265 <    public void testThenRunAsync() {
1266 <        CompletableFuture<Integer> f = new CompletableFuture<>();
1267 <        Noop r = new Noop();
1268 <        CompletableFuture<Void> g = f.thenRunAsync(r);
1269 <        f.complete(null);
1270 <        checkCompletedNormally(g, null);
1265 >    public void testThenRun_normalCompletion() {
1266 >        for (ExecutionMode m : ExecutionMode.values())
1267 >        for (boolean createIncomplete : new boolean[] { true, false })
1268 >        for (Integer v1 : new Integer[] { 1, null })
1269 >    {
1270 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1271 >        final Noop r = new Noop(m);
1272 >        if (!createIncomplete) assertTrue(f.complete(v1));
1273 >        final CompletableFuture<Void> g = m.thenRun(f, r);
1274 >        if (createIncomplete) {
1275 >            checkIncomplete(g);
1276 >            assertTrue(f.complete(v1));
1277 >        }
1278  
1331        // reordered version
1332        f = new CompletableFuture<>();
1333        f.complete(null);
1334        r = new Noop();
1335        g = f.thenRunAsync(r);
1279          checkCompletedNormally(g, null);
1280 <    }
1280 >        checkCompletedNormally(f, v1);
1281 >        r.assertInvoked();
1282 >    }}
1283  
1284      /**
1285 <     * thenRunAsync result completes exceptionally after exceptional
1285 >     * thenRun result completes exceptionally after exceptional
1286       * completion of source
1287       */
1288 <    public void testThenRunAsync2() {
1289 <        CompletableFuture<Integer> f = new CompletableFuture<>();
1290 <        Noop r = new Noop();
1291 <        CompletableFuture<Void> g = f.thenRunAsync(r);
1292 <        f.completeExceptionally(new CFException());
1293 <        try {
1294 <            g.join();
1295 <            shouldThrow();
1296 <        } catch (Exception ok) {
1288 >    public void testThenRun_exceptionalCompletion() {
1289 >        for (ExecutionMode m : ExecutionMode.values())
1290 >        for (boolean createIncomplete : new boolean[] { true, false })
1291 >    {
1292 >        final CFException ex = new CFException();
1293 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1294 >        final Noop r = new Noop(m);
1295 >        if (!createIncomplete) f.completeExceptionally(ex);
1296 >        final CompletableFuture<Void> g = m.thenRun(f, r);
1297 >        if (createIncomplete) {
1298 >            checkIncomplete(g);
1299 >            f.completeExceptionally(ex);
1300          }
1353        checkCompletedWithWrappedCFException(g);
1354    }
1355
1356    /**
1357     * thenRunAsync result completes exceptionally if action does
1358     */
1359    public void testThenRunAsync3() {
1360        CompletableFuture<Integer> f = new CompletableFuture<>();
1361        FailingNoop r = new FailingNoop();
1362        CompletableFuture<Void> g = f.thenRunAsync(r);
1363        f.complete(null);
1364        checkCompletedWithWrappedCFException(g);
1365    }
1366
1367    /**
1368     * thenRunAsync result completes exceptionally if source cancelled
1369     */
1370    public void testThenRunAsync4() {
1371        CompletableFuture<Integer> f = new CompletableFuture<>();
1372        Noop r = new Noop();
1373        CompletableFuture<Void> g = f.thenRunAsync(r);
1374        assertTrue(f.cancel(true));
1375        checkCompletedWithWrappedCancellationException(g);
1376    }
1377
1378    /**
1379     * thenApplyAsync result completes normally after normal completion of source
1380     */
1381    public void testThenApplyAsync() {
1382        CompletableFuture<Integer> f = new CompletableFuture<>();
1383        CompletableFuture<Integer> g = f.thenApplyAsync(inc);
1384        f.complete(one);
1385        checkCompletedNormally(g, two);
1386    }
1387
1388    /**
1389     * thenApplyAsync result completes exceptionally after exceptional
1390     * completion of source
1391     */
1392    public void testThenApplyAsync2() {
1393        CompletableFuture<Integer> f = new CompletableFuture<>();
1394        CompletableFuture<Integer> g = f.thenApplyAsync(inc);
1395        f.completeExceptionally(new CFException());
1396        checkCompletedWithWrappedCFException(g);
1397    }
1398
1399    /**
1400     * thenApplyAsync result completes exceptionally if action does
1401     */
1402    public void testThenApplyAsync3() {
1403        CompletableFuture<Integer> f = new CompletableFuture<>();
1404        FailingFunction r = new FailingFunction();
1405        CompletableFuture<Integer> g = f.thenApplyAsync(r);
1406        f.complete(null);
1407        checkCompletedWithWrappedCFException(g);
1408    }
1409
1410    /**
1411     * thenApplyAsync result completes exceptionally if source cancelled
1412     */
1413    public void testThenApplyAsync4() {
1414        CompletableFuture<Integer> f = new CompletableFuture<>();
1415        CompletableFuture<Integer> g = f.thenApplyAsync(inc);
1416        assertTrue(f.cancel(true));
1417        checkCompletedWithWrappedCancellationException(g);
1418    }
1419
1420    /**
1421     * thenAcceptAsync result completes normally after normal
1422     * completion of source
1423     */
1424    public void testThenAcceptAsync() {
1425        CompletableFuture<Integer> f = new CompletableFuture<>();
1426        IncAction r = new IncAction();
1427        CompletableFuture<Void> g = f.thenAcceptAsync(r);
1428        f.complete(one);
1429        checkCompletedNormally(g, null);
1430        assertEquals(r.value, 2);
1431    }
1301  
1302 <    /**
1303 <     * thenAcceptAsync result completes exceptionally after exceptional
1304 <     * completion of source
1305 <     */
1437 <    public void testThenAcceptAsync2() {
1438 <        CompletableFuture<Integer> f = new CompletableFuture<>();
1439 <        IncAction r = new IncAction();
1440 <        CompletableFuture<Void> g = f.thenAcceptAsync(r);
1441 <        f.completeExceptionally(new CFException());
1442 <        checkCompletedWithWrappedCFException(g);
1443 <    }
1302 >        checkCompletedWithWrappedException(g, ex);
1303 >        checkCompletedExceptionally(f, ex);
1304 >        r.assertNotInvoked();
1305 >    }}
1306  
1307      /**
1308 <     * thenAcceptAsync result completes exceptionally if action does
1308 >     * thenRun result completes exceptionally if source cancelled
1309       */
1310 <    public void testThenAcceptAsync3() {
1311 <        CompletableFuture<Integer> f = new CompletableFuture<>();
1312 <        FailingConsumer r = new FailingConsumer();
1313 <        CompletableFuture<Void> g = f.thenAcceptAsync(r);
1314 <        f.complete(null);
1315 <        checkCompletedWithWrappedCFException(g);
1316 <    }
1310 >    public void testThenRun_sourceCancelled() {
1311 >        for (ExecutionMode m : ExecutionMode.values())
1312 >        for (boolean createIncomplete : new boolean[] { true, false })
1313 >        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1314 >    {
1315 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1316 >        final Noop r = new Noop(m);
1317 >        if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
1318 >        final CompletableFuture<Void> g = m.thenRun(f, r);
1319 >        if (createIncomplete) {
1320 >            checkIncomplete(g);
1321 >            assertTrue(f.cancel(mayInterruptIfRunning));
1322 >        }
1323  
1456    /**
1457     * thenAcceptAsync result completes exceptionally if source cancelled
1458     */
1459    public void testThenAcceptAsync4() {
1460        CompletableFuture<Integer> f = new CompletableFuture<>();
1461        IncAction r = new IncAction();
1462        CompletableFuture<Void> g = f.thenAcceptAsync(r);
1463        assertTrue(f.cancel(true));
1324          checkCompletedWithWrappedCancellationException(g);
1325 <    }
1326 <
1327 <    /**
1468 <     * thenCombineAsync result completes normally after normal
1469 <     * completion of sources
1470 <     */
1471 <    public void testThenCombineAsync() {
1472 <        CompletableFuture<Integer> f, g, h;
1473 <
1474 <        f = new CompletableFuture<>();
1475 <        g = new CompletableFuture<>();
1476 <        h = f.thenCombineAsync(g, subtract);
1477 <        f.complete(3);
1478 <        checkIncomplete(h);
1479 <        g.complete(1);
1480 <        checkCompletedNormally(h, 2);
1481 <
1482 <        f = new CompletableFuture<>();
1483 <        g = new CompletableFuture<>();
1484 <        h = f.thenCombineAsync(g, subtract);
1485 <        g.complete(1);
1486 <        checkIncomplete(h);
1487 <        f.complete(3);
1488 <        checkCompletedNormally(h, 2);
1489 <
1490 <        f = new CompletableFuture<>();
1491 <        g = new CompletableFuture<>();
1492 <        g.complete(1);
1493 <        f.complete(3);
1494 <        h = f.thenCombineAsync(g, subtract);
1495 <        checkCompletedNormally(h, 2);
1496 <    }
1497 <
1498 <    /**
1499 <     * thenCombineAsync result completes exceptionally after exceptional
1500 <     * completion of either source
1501 <     */
1502 <    public void testThenCombineAsync2() {
1503 <        CompletableFuture<Integer> f, g, h;
1504 <
1505 <        f = new CompletableFuture<>();
1506 <        g = new CompletableFuture<>();
1507 <        h = f.thenCombineAsync(g, subtract);
1508 <        f.completeExceptionally(new CFException());
1509 <        checkIncomplete(h);
1510 <        g.complete(1);
1511 <        checkCompletedWithWrappedCFException(h);
1512 <
1513 <        f = new CompletableFuture<>();
1514 <        g = new CompletableFuture<>();
1515 <        h = f.thenCombineAsync(g, subtract);
1516 <        g.completeExceptionally(new CFException());
1517 <        checkIncomplete(h);
1518 <        f.complete(3);
1519 <        checkCompletedWithWrappedCFException(h);
1520 <
1521 <        f = new CompletableFuture<>();
1522 <        g = new CompletableFuture<>();
1523 <        g.completeExceptionally(new CFException());
1524 <        f.complete(3);
1525 <        h = f.thenCombineAsync(g, subtract);
1526 <        checkCompletedWithWrappedCFException(h);
1527 <    }
1528 <
1529 <    /**
1530 <     * thenCombineAsync result completes exceptionally if action does
1531 <     */
1532 <    public void testThenCombineAsync3() {
1533 <        CompletableFuture<Integer> f = new CompletableFuture<>();
1534 <        CompletableFuture<Integer> f2 = new CompletableFuture<>();
1535 <        FailingBiFunction r = new FailingBiFunction();
1536 <        CompletableFuture<Integer> g = f.thenCombineAsync(f2, r);
1537 <        f.complete(one);
1538 <        checkIncomplete(g);
1539 <        assertFalse(r.ran);
1540 <        f2.complete(two);
1541 <        checkCompletedWithWrappedCFException(g);
1542 <        assertTrue(r.ran);
1543 <    }
1544 <
1545 <    /**
1546 <     * thenCombineAsync result completes exceptionally if either source cancelled
1547 <     */
1548 <    public void testThenCombineAsync4() {
1549 <        CompletableFuture<Integer> f, g, h;
1550 <
1551 <        f = new CompletableFuture<>();
1552 <        g = new CompletableFuture<>();
1553 <        h = f.thenCombineAsync(g, subtract);
1554 <        assertTrue(f.cancel(true));
1555 <        checkIncomplete(h);
1556 <        g.complete(1);
1557 <        checkCompletedWithWrappedCancellationException(h);
1558 <
1559 <        f = new CompletableFuture<>();
1560 <        g = new CompletableFuture<>();
1561 <        h = f.thenCombineAsync(g, subtract);
1562 <        assertTrue(g.cancel(true));
1563 <        checkIncomplete(h);
1564 <        f.complete(3);
1565 <        checkCompletedWithWrappedCancellationException(h);
1566 <
1567 <        f = new CompletableFuture<>();
1568 <        g = new CompletableFuture<>();
1569 <        g.complete(3);
1570 <        assertTrue(f.cancel(true));
1571 <        h = f.thenCombineAsync(g, subtract);
1572 <        checkCompletedWithWrappedCancellationException(h);
1573 <
1574 <        f = new CompletableFuture<>();
1575 <        g = new CompletableFuture<>();
1576 <        f.complete(3);
1577 <        assertTrue(g.cancel(true));
1578 <        h = f.thenCombineAsync(g, subtract);
1579 <        checkCompletedWithWrappedCancellationException(h);
1580 <    }
1581 <
1582 <    /**
1583 <     * thenAcceptBothAsync result completes normally after normal
1584 <     * completion of sources
1585 <     */
1586 <    public void testThenAcceptBothAsync() {
1587 <        CompletableFuture<Integer> f, g;
1588 <        CompletableFuture<Void> h;
1589 <        SubtractAction r;
1590 <
1591 <        f = new CompletableFuture<>();
1592 <        g = new CompletableFuture<>();
1593 <        h = f.thenAcceptBothAsync(g, r = new SubtractAction());
1594 <        f.complete(3);
1595 <        checkIncomplete(h);
1596 <        g.complete(1);
1597 <        checkCompletedNormally(h, null);
1598 <        assertEquals(r.value, 2);
1599 <
1600 <        f = new CompletableFuture<>();
1601 <        g = new CompletableFuture<>();
1602 <        h = f.thenAcceptBothAsync(g, r = new SubtractAction());
1603 <        g.complete(1);
1604 <        checkIncomplete(h);
1605 <        f.complete(3);
1606 <        checkCompletedNormally(h, null);
1607 <        assertEquals(r.value, 2);
1608 <
1609 <        f = new CompletableFuture<>();
1610 <        g = new CompletableFuture<>();
1611 <        g.complete(1);
1612 <        f.complete(3);
1613 <        h = f.thenAcceptBothAsync(g, r = new SubtractAction());
1614 <        checkCompletedNormally(h, null);
1615 <        assertEquals(r.value, 2);
1616 <    }
1617 <
1618 <    /**
1619 <     * thenAcceptBothAsync result completes exceptionally after exceptional
1620 <     * completion of source
1621 <     */
1622 <    public void testThenAcceptBothAsync2() {
1623 <        CompletableFuture<Integer> f, g;
1624 <        CompletableFuture<Void> h;
1625 <        SubtractAction r;
1626 <
1627 <        f = new CompletableFuture<>();
1628 <        g = new CompletableFuture<>();
1629 <        h = f.thenAcceptBothAsync(g, r = new SubtractAction());
1630 <        f.completeExceptionally(new CFException());
1631 <        checkIncomplete(h);
1632 <        g.complete(1);
1633 <        checkCompletedWithWrappedCFException(h);
1634 <
1635 <        f = new CompletableFuture<>();
1636 <        g = new CompletableFuture<>();
1637 <        h = f.thenAcceptBothAsync(g, r = new SubtractAction());
1638 <        g.completeExceptionally(new CFException());
1639 <        checkIncomplete(h);
1640 <        f.complete(3);
1641 <        checkCompletedWithWrappedCFException(h);
1642 <
1643 <        f = new CompletableFuture<>();
1644 <        g = new CompletableFuture<>();
1645 <        f.complete(3);
1646 <        g.completeExceptionally(new CFException());
1647 <        h = f.thenAcceptBothAsync(g, r = new SubtractAction());
1648 <        checkCompletedWithWrappedCFException(h);
1649 <
1650 <        f = new CompletableFuture<>();
1651 <        g = new CompletableFuture<>();
1652 <        f.completeExceptionally(new CFException());
1653 <        g.complete(3);
1654 <        h = f.thenAcceptBothAsync(g, r = new SubtractAction());
1655 <        checkCompletedWithWrappedCFException(h);
1656 <    }
1657 <
1658 <    /**
1659 <     * thenAcceptBothAsync result completes exceptionally if action does
1660 <     */
1661 <    public void testThenAcceptBothAsync3() {
1662 <        CompletableFuture<Integer> f, g;
1663 <        CompletableFuture<Void> h;
1664 <        FailingBiConsumer r;
1665 <
1666 <        f = new CompletableFuture<>();
1667 <        g = new CompletableFuture<>();
1668 <        h = f.thenAcceptBothAsync(g, r = new FailingBiConsumer());
1669 <        f.complete(3);
1670 <        checkIncomplete(h);
1671 <        g.complete(1);
1672 <        checkCompletedWithWrappedCFException(h);
1673 <
1674 <        f = new CompletableFuture<>();
1675 <        g = new CompletableFuture<>();
1676 <        f.complete(3);
1677 <        g.complete(1);
1678 <        h = f.thenAcceptBothAsync(g, r = new FailingBiConsumer());
1679 <        checkCompletedWithWrappedCFException(h);
1680 <    }
1681 <
1682 <    /**
1683 <     * thenAcceptBothAsync result completes exceptionally if either source cancelled
1684 <     */
1685 <    public void testThenAcceptBothAsync4() {
1686 <        CompletableFuture<Integer> f, g;
1687 <        CompletableFuture<Void> h;
1688 <        SubtractAction r;
1689 <
1690 <        f = new CompletableFuture<>();
1691 <        g = new CompletableFuture<>();
1692 <        h = f.thenAcceptBothAsync(g, r = new SubtractAction());
1693 <        assertTrue(f.cancel(true));
1694 <        checkIncomplete(h);
1695 <        g.complete(1);
1696 <        checkCompletedWithWrappedCancellationException(h);
1697 <
1698 <        f = new CompletableFuture<>();
1699 <        g = new CompletableFuture<>();
1700 <        h = f.thenAcceptBothAsync(g, r = new SubtractAction());
1701 <        assertTrue(g.cancel(true));
1702 <        checkIncomplete(h);
1703 <        f.complete(3);
1704 <        checkCompletedWithWrappedCancellationException(h);
1705 <
1706 <        f = new CompletableFuture<>();
1707 <        g = new CompletableFuture<>();
1708 <        f.complete(3);
1709 <        assertTrue(g.cancel(true));
1710 <        h = f.thenAcceptBothAsync(g, r = new SubtractAction());
1711 <        checkCompletedWithWrappedCancellationException(h);
1712 <
1713 <        f = new CompletableFuture<>();
1714 <        g = new CompletableFuture<>();
1715 <        assertTrue(f.cancel(true));
1716 <        g.complete(3);
1717 <        h = f.thenAcceptBothAsync(g, r = new SubtractAction());
1718 <        checkCompletedWithWrappedCancellationException(h);
1719 <    }
1720 <
1721 <    /**
1722 <     * runAfterBothAsync result completes normally after normal
1723 <     * completion of sources
1724 <     */
1725 <    public void testRunAfterBothAsync() {
1726 <        CompletableFuture<Integer> f = new CompletableFuture<>();
1727 <        CompletableFuture<Integer> f2 = new CompletableFuture<>();
1728 <        Noop r = new Noop();
1729 <        CompletableFuture<Void> g = f.runAfterBothAsync(f2, r);
1730 <        f.complete(one);
1731 <        checkIncomplete(g);
1732 <        f2.complete(two);
1733 <        checkCompletedNormally(g, null);
1734 <        assertTrue(r.ran);
1735 <    }
1325 >        checkCancelled(f);
1326 >        r.assertNotInvoked();
1327 >    }}
1328  
1329      /**
1330 <     * runAfterBothAsync result completes exceptionally after exceptional
1739 <     * completion of source
1330 >     * thenRun result completes exceptionally if action does
1331       */
1332 <    public void testRunAfterBothAsync2() {
1333 <        CompletableFuture<Integer> f = new CompletableFuture<>();
1334 <        CompletableFuture<Integer> f2 = new CompletableFuture<>();
1335 <        Noop r = new Noop();
1336 <        CompletableFuture<Void> g = f.runAfterBothAsync(f2, r);
1337 <        f.completeExceptionally(new CFException());
1338 <        f2.complete(two);
1339 <        checkCompletedWithWrappedCFException(g);
1340 <
1341 <        r = new Noop();
1342 <        f = new CompletableFuture<>();
1343 <        f2 = new CompletableFuture<>();
1344 <        g = f.runAfterBothAsync(f2, r);
1754 <        f.complete(one);
1755 <        f2.completeExceptionally(new CFException());
1756 <        checkCompletedWithWrappedCFException(g);
1757 <    }
1332 >    public void testThenRun_actionFailed() {
1333 >        for (ExecutionMode m : ExecutionMode.values())
1334 >        for (boolean createIncomplete : new boolean[] { true, false })
1335 >        for (Integer v1 : new Integer[] { 1, null })
1336 >    {
1337 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1338 >        final FailingRunnable r = new FailingRunnable(m);
1339 >        if (!createIncomplete) assertTrue(f.complete(v1));
1340 >        final CompletableFuture<Void> g = m.thenRun(f, r);
1341 >        if (createIncomplete) {
1342 >            checkIncomplete(g);
1343 >            assertTrue(f.complete(v1));
1344 >        }
1345  
1759    /**
1760     * runAfterBothAsync result completes exceptionally if action does
1761     */
1762    public void testRunAfterBothAsync3() {
1763        CompletableFuture<Integer> f = new CompletableFuture<>();
1764        CompletableFuture<Integer> f2 = new CompletableFuture<>();
1765        FailingNoop r = new FailingNoop();
1766        CompletableFuture<Void> g = f.runAfterBothAsync(f2, r);
1767        f.complete(one);
1768        checkIncomplete(g);
1769        f2.complete(two);
1346          checkCompletedWithWrappedCFException(g);
1347 <    }
1348 <
1773 <    /**
1774 <     * runAfterBothAsync result completes exceptionally if either source cancelled
1775 <     */
1776 <    public void testRunAfterBothAsync4() {
1777 <        CompletableFuture<Integer> f = new CompletableFuture<>();
1778 <        CompletableFuture<Integer> f2 = new CompletableFuture<>();
1779 <        Noop r = new Noop();
1780 <        CompletableFuture<Void> g = f.runAfterBothAsync(f2, r);
1781 <        assertTrue(f.cancel(true));
1782 <        f2.complete(two);
1783 <        checkCompletedWithWrappedCancellationException(g);
1784 <
1785 <        r = new Noop();
1786 <        f = new CompletableFuture<>();
1787 <        f2 = new CompletableFuture<>();
1788 <        g = f.runAfterBothAsync(f2, r);
1789 <        f.complete(one);
1790 <        assertTrue(f2.cancel(true));
1791 <        checkCompletedWithWrappedCancellationException(g);
1792 <    }
1347 >        checkCompletedNormally(f, v1);
1348 >    }}
1349  
1350      /**
1351 <     * applyToEitherAsync result completes normally after normal
1796 <     * completion of sources
1351 >     * thenApply result completes normally after normal completion of source
1352       */
1353 <    public void testApplyToEitherAsync() {
1354 <        CompletableFuture<Integer> f = new CompletableFuture<>();
1355 <        CompletableFuture<Integer> f2 = new CompletableFuture<>();
1356 <        CompletableFuture<Integer> g = f.applyToEitherAsync(f2, inc);
1357 <        f.complete(one);
1358 <        checkCompletedNormally(g, two);
1353 >    public void testThenApply_normalCompletion() {
1354 >        for (ExecutionMode m : ExecutionMode.values())
1355 >        for (boolean createIncomplete : new boolean[] { true, false })
1356 >        for (Integer v1 : new Integer[] { 1, null })
1357 >    {
1358 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1359 >        final IncFunction r = new IncFunction(m);
1360 >        if (!createIncomplete) assertTrue(f.complete(v1));
1361 >        final CompletableFuture<Integer> g = m.thenApply(f, r);
1362 >        if (createIncomplete) {
1363 >            checkIncomplete(g);
1364 >            assertTrue(f.complete(v1));
1365 >        }
1366  
1367 <        f = new CompletableFuture<>();
1368 <        f.complete(one);
1369 <        f2 = new CompletableFuture<>();
1370 <        g = f.applyToEitherAsync(f2, inc);
1809 <        checkCompletedNormally(g, two);
1810 <    }
1367 >        checkCompletedNormally(g, inc(v1));
1368 >        checkCompletedNormally(f, v1);
1369 >        r.assertValue(inc(v1));
1370 >    }}
1371  
1372      /**
1373 <     * applyToEitherAsync result completes exceptionally after exceptional
1373 >     * thenApply result completes exceptionally after exceptional
1374       * completion of source
1375       */
1376 <    public void testApplyToEitherAsync2() {
1377 <        CompletableFuture<Integer> f = new CompletableFuture<>();
1378 <        CompletableFuture<Integer> f2 = new CompletableFuture<>();
1379 <        CompletableFuture<Integer> g = f.applyToEitherAsync(f2, inc);
1380 <        f.completeExceptionally(new CFException());
1381 <        checkCompletedWithWrappedCFException(g);
1382 <
1383 <        f = new CompletableFuture<>();
1384 <        f2 = new CompletableFuture<>();
1385 <        f2.completeExceptionally(new CFException());
1386 <        g = f.applyToEitherAsync(f2, inc);
1387 <        f.complete(one);
1388 <        checkCompletedWithWrappedCFException(g);
1829 <    }
1376 >    public void testThenApply_exceptionalCompletion() {
1377 >        for (ExecutionMode m : ExecutionMode.values())
1378 >        for (boolean createIncomplete : new boolean[] { true, false })
1379 >    {
1380 >        final CFException ex = new CFException();
1381 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1382 >        final IncFunction r = new IncFunction(m);
1383 >        if (!createIncomplete) f.completeExceptionally(ex);
1384 >        final CompletableFuture<Integer> g = m.thenApply(f, r);
1385 >        if (createIncomplete) {
1386 >            checkIncomplete(g);
1387 >            f.completeExceptionally(ex);
1388 >        }
1389  
1390 <    /**
1391 <     * applyToEitherAsync result completes exceptionally if action does
1392 <     */
1393 <    public void testApplyToEitherAsync3() {
1835 <        CompletableFuture<Integer> f = new CompletableFuture<>();
1836 <        CompletableFuture<Integer> f2 = new CompletableFuture<>();
1837 <        FailingFunction r = new FailingFunction();
1838 <        CompletableFuture<Integer> g = f.applyToEitherAsync(f2, r);
1839 <        f.complete(one);
1840 <        checkCompletedWithWrappedCFException(g);
1841 <    }
1390 >        checkCompletedWithWrappedException(g, ex);
1391 >        checkCompletedExceptionally(f, ex);
1392 >        r.assertNotInvoked();
1393 >    }}
1394  
1395      /**
1396 <     * applyToEitherAsync result completes exceptionally if either source cancelled
1396 >     * thenApply result completes exceptionally if source cancelled
1397       */
1398 <    public void testApplyToEitherAsync4() {
1399 <        CompletableFuture<Integer> f = new CompletableFuture<>();
1400 <        CompletableFuture<Integer> f2 = new CompletableFuture<>();
1401 <        CompletableFuture<Integer> g = f.applyToEitherAsync(f2, inc);
1402 <        assertTrue(f.cancel(true));
1403 <        checkCompletedWithWrappedCancellationException(g);
1398 >    public void testThenApply_sourceCancelled() {
1399 >        for (ExecutionMode m : ExecutionMode.values())
1400 >        for (boolean createIncomplete : new boolean[] { true, false })
1401 >        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1402 >    {
1403 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1404 >        final IncFunction r = new IncFunction(m);
1405 >        if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
1406 >        final CompletableFuture<Integer> g = m.thenApply(f, r);
1407 >        if (createIncomplete) {
1408 >            checkIncomplete(g);
1409 >            assertTrue(f.cancel(mayInterruptIfRunning));
1410 >        }
1411  
1853        f = new CompletableFuture<>();
1854        f2 = new CompletableFuture<>();
1855        assertTrue(f2.cancel(true));
1856        g = f.applyToEitherAsync(f2, inc);
1412          checkCompletedWithWrappedCancellationException(g);
1413 <    }
1414 <
1415 <    /**
1861 <     * acceptEitherAsync result completes normally after normal
1862 <     * completion of sources
1863 <     */
1864 <    public void testAcceptEitherAsync() {
1865 <        CompletableFuture<Integer> f = new CompletableFuture<>();
1866 <        CompletableFuture<Integer> f2 = new CompletableFuture<>();
1867 <        IncAction r = new IncAction();
1868 <        CompletableFuture<Void> g = f.acceptEitherAsync(f2, r);
1869 <        f.complete(one);
1870 <        checkCompletedNormally(g, null);
1871 <        assertEquals(r.value, 2);
1872 <
1873 <        r = new IncAction();
1874 <        f = new CompletableFuture<>();
1875 <        f.complete(one);
1876 <        f2 = new CompletableFuture<>();
1877 <        g = f.acceptEitherAsync(f2, r);
1878 <        checkCompletedNormally(g, null);
1879 <        assertEquals(r.value, 2);
1880 <    }
1413 >        checkCancelled(f);
1414 >        r.assertNotInvoked();
1415 >    }}
1416  
1417      /**
1418 <     * acceptEitherAsync result completes exceptionally after exceptional
1884 <     * completion of source
1418 >     * thenApply result completes exceptionally if action does
1419       */
1420 <    public void testAcceptEitherAsync2() {
1421 <        CompletableFuture<Integer> f = new CompletableFuture<>();
1422 <        CompletableFuture<Integer> f2 = new CompletableFuture<>();
1423 <        IncAction r = new IncAction();
1424 <        CompletableFuture<Void> g = f.acceptEitherAsync(f2, r);
1425 <        f.completeExceptionally(new CFException());
1426 <        checkCompletedWithWrappedCFException(g);
1427 <
1428 <        r = new IncAction();
1429 <        f = new CompletableFuture<>();
1430 <        f2 = new CompletableFuture<>();
1431 <        f2.completeExceptionally(new CFException());
1432 <        g = f.acceptEitherAsync(f2, r);
1899 <        f.complete(one);
1900 <        checkCompletedWithWrappedCFException(g);
1901 <    }
1420 >    public void testThenApply_actionFailed() {
1421 >        for (ExecutionMode m : ExecutionMode.values())
1422 >        for (boolean createIncomplete : new boolean[] { true, false })
1423 >        for (Integer v1 : new Integer[] { 1, null })
1424 >    {
1425 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1426 >        final FailingFunction r = new FailingFunction(m);
1427 >        if (!createIncomplete) assertTrue(f.complete(v1));
1428 >        final CompletableFuture<Integer> g = m.thenApply(f, r);
1429 >        if (createIncomplete) {
1430 >            checkIncomplete(g);
1431 >            assertTrue(f.complete(v1));
1432 >        }
1433  
1903    /**
1904     * acceptEitherAsync result completes exceptionally if action does
1905     */
1906    public void testAcceptEitherAsync3() {
1907        CompletableFuture<Integer> f = new CompletableFuture<>();
1908        CompletableFuture<Integer> f2 = new CompletableFuture<>();
1909        FailingConsumer r = new FailingConsumer();
1910        CompletableFuture<Void> g = f.acceptEitherAsync(f2, r);
1911        f.complete(one);
1434          checkCompletedWithWrappedCFException(g);
1435 <    }
1435 >        checkCompletedNormally(f, v1);
1436 >    }}
1437  
1438      /**
1439 <     * acceptEitherAsync result completes exceptionally if either
1917 <     * source cancelled
1918 <     */
1919 <    public void testAcceptEitherAsync4() {
1920 <        CompletableFuture<Integer> f = new CompletableFuture<>();
1921 <        CompletableFuture<Integer> f2 = new CompletableFuture<>();
1922 <        IncAction r = new IncAction();
1923 <        CompletableFuture<Void> g = f.acceptEitherAsync(f2, r);
1924 <        assertTrue(f.cancel(true));
1925 <        checkCompletedWithWrappedCancellationException(g);
1926 <
1927 <        r = new IncAction();
1928 <        f = new CompletableFuture<>();
1929 <        f2 = new CompletableFuture<>();
1930 <        assertTrue(f2.cancel(true));
1931 <        g = f.acceptEitherAsync(f2, r);
1932 <        checkCompletedWithWrappedCancellationException(g);
1933 <    }
1934 <
1935 <    /**
1936 <     * runAfterEitherAsync result completes normally after normal
1937 <     * completion of sources
1439 >     * thenAccept result completes normally after normal completion of source
1440       */
1441 <    public void testRunAfterEitherAsync() {
1442 <        CompletableFuture<Integer> f = new CompletableFuture<>();
1443 <        CompletableFuture<Integer> f2 = new CompletableFuture<>();
1444 <        Noop r = new Noop();
1445 <        CompletableFuture<Void> g = f.runAfterEitherAsync(f2, r);
1446 <        f.complete(one);
1447 <        checkCompletedNormally(g, null);
1448 <        assertTrue(r.ran);
1441 >    public void testThenAccept_normalCompletion() {
1442 >        for (ExecutionMode m : ExecutionMode.values())
1443 >        for (boolean createIncomplete : new boolean[] { true, false })
1444 >        for (Integer v1 : new Integer[] { 1, null })
1445 >    {
1446 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1447 >        final NoopConsumer r = new NoopConsumer(m);
1448 >        if (!createIncomplete) assertTrue(f.complete(v1));
1449 >        final CompletableFuture<Void> g = m.thenAccept(f, r);
1450 >        if (createIncomplete) {
1451 >            checkIncomplete(g);
1452 >            assertTrue(f.complete(v1));
1453 >        }
1454  
1948        r = new Noop();
1949        f = new CompletableFuture<>();
1950        f.complete(one);
1951        f2 = new CompletableFuture<>();
1952        g = f.runAfterEitherAsync(f2, r);
1455          checkCompletedNormally(g, null);
1456 <        assertTrue(r.ran);
1457 <    }
1458 <
1957 <    /**
1958 <     * runAfterEitherAsync result completes exceptionally after exceptional
1959 <     * completion of source
1960 <     */
1961 <    public void testRunAfterEitherAsync2() {
1962 <        CompletableFuture<Integer> f = new CompletableFuture<>();
1963 <        CompletableFuture<Integer> f2 = new CompletableFuture<>();
1964 <        Noop r = new Noop();
1965 <        CompletableFuture<Void> g = f.runAfterEitherAsync(f2, r);
1966 <        f.completeExceptionally(new CFException());
1967 <        checkCompletedWithWrappedCFException(g);
1968 <
1969 <        r = new Noop();
1970 <        f = new CompletableFuture<>();
1971 <        f2 = new CompletableFuture<>();
1972 <        f2.completeExceptionally(new CFException());
1973 <        g = f.runAfterEitherAsync(f2, r);
1974 <        f.complete(one);
1975 <        checkCompletedWithWrappedCFException(g);
1976 <    }
1977 <
1978 <    /**
1979 <     * runAfterEitherAsync result completes exceptionally if action does
1980 <     */
1981 <    public void testRunAfterEitherAsync3() {
1982 <        CompletableFuture<Integer> f = new CompletableFuture<>();
1983 <        CompletableFuture<Integer> f2 = new CompletableFuture<>();
1984 <        FailingNoop r = new FailingNoop();
1985 <        CompletableFuture<Void> g = f.runAfterEitherAsync(f2, r);
1986 <        f.complete(one);
1987 <        checkCompletedWithWrappedCFException(g);
1988 <    }
1989 <
1990 <    /**
1991 <     * runAfterEitherAsync result completes exceptionally if either
1992 <     * source cancelled
1993 <     */
1994 <    public void testRunAfterEitherAsync4() {
1995 <        CompletableFuture<Integer> f = new CompletableFuture<>();
1996 <        CompletableFuture<Integer> f2 = new CompletableFuture<>();
1997 <        Noop r = new Noop();
1998 <        CompletableFuture<Void> g = f.runAfterEitherAsync(f2, r);
1999 <        assertTrue(f.cancel(true));
2000 <        checkCompletedWithWrappedCancellationException(g);
2001 <
2002 <        r = new Noop();
2003 <        f = new CompletableFuture<>();
2004 <        f2 = new CompletableFuture<>();
2005 <        assertTrue(f2.cancel(true));
2006 <        g = f.runAfterEitherAsync(f2, r);
2007 <        checkCompletedWithWrappedCancellationException(g);
2008 <    }
1456 >        r.assertValue(v1);
1457 >        checkCompletedNormally(f, v1);
1458 >    }}
1459  
1460      /**
1461 <     * thenComposeAsync result completes normally after normal
1461 >     * thenAccept result completes exceptionally after exceptional
1462       * completion of source
1463       */
1464 <    public void testThenComposeAsync() {
1465 <        CompletableFuture<Integer> f, g;
1466 <        CompletableFutureInc r;
1467 <
1468 <        f = new CompletableFuture<>();
1469 <        g = f.thenComposeAsync(r = new CompletableFutureInc());
1470 <        f.complete(one);
1471 <        checkCompletedNormally(g, two);
1472 <
1473 <        f = new CompletableFuture<>();
1474 <        f.complete(one);
1475 <        g = f.thenComposeAsync(r = new CompletableFutureInc());
1476 <        checkCompletedNormally(g, two);
2027 <    }
2028 <
2029 <    /**
2030 <     * thenComposeAsync result completes exceptionally after
2031 <     * exceptional completion of source
2032 <     */
2033 <    public void testThenComposeAsync2() {
2034 <        CompletableFuture<Integer> f, g;
2035 <        CompletableFutureInc r;
2036 <
2037 <        f = new CompletableFuture<>();
2038 <        g = f.thenComposeAsync(r = new CompletableFutureInc());
2039 <        f.completeExceptionally(new CFException());
2040 <        checkCompletedWithWrappedCFException(g);
2041 <        assertFalse(r.ran);
2042 <
2043 <        f = new CompletableFuture<>();
2044 <        f.completeExceptionally(new CFException());
2045 <        g = f.thenComposeAsync(r = new CompletableFutureInc());
2046 <        checkCompletedWithWrappedCFException(g);
2047 <        assertFalse(r.ran);
2048 <    }
2049 <
2050 <    /**
2051 <     * thenComposeAsync result completes exceptionally if action does
2052 <     */
2053 <    public void testThenComposeAsync3() {
2054 <        CompletableFuture<Integer> f, g;
2055 <        FailingCompletableFutureFunction r;
1464 >    public void testThenAccept_exceptionalCompletion() {
1465 >        for (ExecutionMode m : ExecutionMode.values())
1466 >        for (boolean createIncomplete : new boolean[] { true, false })
1467 >    {
1468 >        final CFException ex = new CFException();
1469 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1470 >        final NoopConsumer r = new NoopConsumer(m);
1471 >        if (!createIncomplete) f.completeExceptionally(ex);
1472 >        final CompletableFuture<Void> g = m.thenAccept(f, r);
1473 >        if (createIncomplete) {
1474 >            checkIncomplete(g);
1475 >            f.completeExceptionally(ex);
1476 >        }
1477  
1478 <        f = new CompletableFuture<>();
1479 <        g = f.thenComposeAsync(r = new FailingCompletableFutureFunction());
1480 <        f.complete(one);
1481 <        checkCompletedWithWrappedCFException(g);
2061 <
2062 <        f = new CompletableFuture<>();
2063 <        f.complete(one);
2064 <        g = f.thenComposeAsync(r = new FailingCompletableFutureFunction());
2065 <        checkCompletedWithWrappedCFException(g);
2066 <    }
1478 >        checkCompletedWithWrappedException(g, ex);
1479 >        checkCompletedExceptionally(f, ex);
1480 >        r.assertNotInvoked();
1481 >    }}
1482  
1483      /**
1484 <     * thenComposeAsync result completes exceptionally if source cancelled
1484 >     * thenAccept result completes exceptionally if source cancelled
1485       */
1486 <    public void testThenComposeAsync4() {
1487 <        CompletableFuture<Integer> f, g;
1488 <        CompletableFutureInc r;
1489 <
1490 <        f = new CompletableFuture<>();
1491 <        g = f.thenComposeAsync(r = new CompletableFutureInc());
1492 <        assertTrue(f.cancel(true));
1493 <        checkCompletedWithWrappedCancellationException(g);
1486 >    public void testThenAccept_sourceCancelled() {
1487 >        for (ExecutionMode m : ExecutionMode.values())
1488 >        for (boolean createIncomplete : new boolean[] { true, false })
1489 >        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1490 >    {
1491 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1492 >        final NoopConsumer r = new NoopConsumer(m);
1493 >        if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
1494 >        final CompletableFuture<Void> g = m.thenAccept(f, r);
1495 >        if (createIncomplete) {
1496 >            checkIncomplete(g);
1497 >            assertTrue(f.cancel(mayInterruptIfRunning));
1498 >        }
1499  
2080        f = new CompletableFuture<>();
2081        assertTrue(f.cancel(true));
2082        g = f.thenComposeAsync(r = new CompletableFutureInc());
1500          checkCompletedWithWrappedCancellationException(g);
1501 <    }
1502 <
1503 <    // async with explicit executors
2087 <
2088 <    /**
2089 <     * thenRunAsync result completes normally after normal completion of source
2090 <     */
2091 <    public void testThenRunAsyncE() {
2092 <        CompletableFuture<Integer> f = new CompletableFuture<>();
2093 <        Noop r = new Noop();
2094 <        CompletableFuture<Void> g = f.thenRunAsync(r, new ThreadExecutor());
2095 <        f.complete(null);
2096 <        checkCompletedNormally(g, null);
2097 <
2098 <        // reordered version
2099 <        f = new CompletableFuture<>();
2100 <        f.complete(null);
2101 <        r = new Noop();
2102 <        g = f.thenRunAsync(r, new ThreadExecutor());
2103 <        checkCompletedNormally(g, null);
2104 <    }
1501 >        checkCancelled(f);
1502 >        r.assertNotInvoked();
1503 >    }}
1504  
1505      /**
1506 <     * thenRunAsync result completes exceptionally after exceptional
2108 <     * completion of source
1506 >     * thenAccept result completes exceptionally if action does
1507       */
1508 <    public void testThenRunAsync2E() {
1509 <        CompletableFuture<Integer> f = new CompletableFuture<>();
1510 <        Noop r = new Noop();
1511 <        CompletableFuture<Void> g = f.thenRunAsync(r, new ThreadExecutor());
1512 <        f.completeExceptionally(new CFException());
1513 <        try {
1514 <            g.join();
1515 <            shouldThrow();
1516 <        } catch (Exception ok) {
1508 >    public void testThenAccept_actionFailed() {
1509 >        for (ExecutionMode m : ExecutionMode.values())
1510 >        for (boolean createIncomplete : new boolean[] { true, false })
1511 >        for (Integer v1 : new Integer[] { 1, null })
1512 >    {
1513 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1514 >        final FailingConsumer r = new FailingConsumer(m);
1515 >        if (!createIncomplete) f.complete(v1);
1516 >        final CompletableFuture<Void> g = m.thenAccept(f, r);
1517 >        if (createIncomplete) {
1518 >            checkIncomplete(g);
1519 >            f.complete(v1);
1520          }
2120        checkCompletedWithWrappedCFException(g);
2121    }
1521  
2123    /**
2124     * thenRunAsync result completes exceptionally if action does
2125     */
2126    public void testThenRunAsync3E() {
2127        CompletableFuture<Integer> f = new CompletableFuture<>();
2128        FailingNoop r = new FailingNoop();
2129        CompletableFuture<Void> g = f.thenRunAsync(r, new ThreadExecutor());
2130        f.complete(null);
1522          checkCompletedWithWrappedCFException(g);
1523 <    }
1524 <
2134 <    /**
2135 <     * thenRunAsync result completes exceptionally if source cancelled
2136 <     */
2137 <    public void testThenRunAsync4E() {
2138 <        CompletableFuture<Integer> f = new CompletableFuture<>();
2139 <        Noop r = new Noop();
2140 <        CompletableFuture<Void> g = f.thenRunAsync(r, new ThreadExecutor());
2141 <        assertTrue(f.cancel(true));
2142 <        checkCompletedWithWrappedCancellationException(g);
2143 <    }
1523 >        checkCompletedNormally(f, v1);
1524 >    }}
1525  
1526      /**
1527 <     * thenApplyAsync result completes normally after normal completion of source
1527 >     * thenCombine result completes normally after normal completion
1528 >     * of sources
1529       */
1530 <    public void testThenApplyAsyncE() {
1531 <        CompletableFuture<Integer> f = new CompletableFuture<>();
1532 <        CompletableFuture<Integer> g = f.thenApplyAsync(inc, new ThreadExecutor());
1533 <        f.complete(one);
1534 <        checkCompletedNormally(g, two);
1535 <    }
1530 >    public void testThenCombine_normalCompletion() {
1531 >        for (ExecutionMode m : ExecutionMode.values())
1532 >        for (boolean fFirst : new boolean[] { true, false })
1533 >        for (Integer v1 : new Integer[] { 1, null })
1534 >        for (Integer v2 : new Integer[] { 2, null })
1535 >    {
1536 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1537 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
1538 >        final SubtractFunction r1 = new SubtractFunction(m);
1539 >        final SubtractFunction r2 = new SubtractFunction(m);
1540 >        final SubtractFunction r3 = new SubtractFunction(m);
1541 >
1542 >        final CompletableFuture<Integer> fst =  fFirst ? f : g;
1543 >        final CompletableFuture<Integer> snd = !fFirst ? f : g;
1544 >        final Integer w1 =  fFirst ? v1 : v2;
1545 >        final Integer w2 = !fFirst ? v1 : v2;
1546 >
1547 >        final CompletableFuture<Integer> h1 = m.thenCombine(f, g, r1);
1548 >        assertTrue(fst.complete(w1));
1549 >        final CompletableFuture<Integer> h2 = m.thenCombine(f, g, r2);
1550 >        checkIncomplete(h1);
1551 >        checkIncomplete(h2);
1552 >        r1.assertNotInvoked();
1553 >        r2.assertNotInvoked();
1554 >        assertTrue(snd.complete(w2));
1555 >        final CompletableFuture<Integer> h3 = m.thenCombine(f, g, r3);
1556 >
1557 >        checkCompletedNormally(h1, subtract(v1, v2));
1558 >        checkCompletedNormally(h2, subtract(v1, v2));
1559 >        checkCompletedNormally(h3, subtract(v1, v2));
1560 >        r1.assertValue(subtract(v1, v2));
1561 >        r2.assertValue(subtract(v1, v2));
1562 >        r3.assertValue(subtract(v1, v2));
1563 >        checkCompletedNormally(f, v1);
1564 >        checkCompletedNormally(g, v2);
1565 >    }}
1566  
1567      /**
1568 <     * thenApplyAsync result completes exceptionally after exceptional
1569 <     * completion of source
1568 >     * thenCombine result completes exceptionally after exceptional
1569 >     * completion of either source
1570       */
1571 <    public void testThenApplyAsync2E() {
1572 <        CompletableFuture<Integer> f = new CompletableFuture<>();
1573 <        CompletableFuture<Integer> g = f.thenApplyAsync(inc, new ThreadExecutor());
1574 <        f.completeExceptionally(new CFException());
1575 <        checkCompletedWithWrappedCFException(g);
1576 <    }
1571 >    public void testThenCombine_exceptionalCompletion() throws Throwable {
1572 >        for (ExecutionMode m : ExecutionMode.values())
1573 >        for (boolean fFirst : new boolean[] { true, false })
1574 >        for (boolean failFirst : new boolean[] { true, false })
1575 >        for (Integer v1 : new Integer[] { 1, null })
1576 >    {
1577 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1578 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
1579 >        final CFException ex = new CFException();
1580 >        final SubtractFunction r1 = new SubtractFunction(m);
1581 >        final SubtractFunction r2 = new SubtractFunction(m);
1582 >        final SubtractFunction r3 = new SubtractFunction(m);
1583 >
1584 >        final CompletableFuture<Integer> fst =  fFirst ? f : g;
1585 >        final CompletableFuture<Integer> snd = !fFirst ? f : g;
1586 >        final Callable<Boolean> complete1 = failFirst ?
1587 >            () -> fst.completeExceptionally(ex) :
1588 >            () -> fst.complete(v1);
1589 >        final Callable<Boolean> complete2 = failFirst ?
1590 >            () -> snd.complete(v1) :
1591 >            () -> snd.completeExceptionally(ex);
1592 >
1593 >        final CompletableFuture<Integer> h1 = m.thenCombine(f, g, r1);
1594 >        assertTrue(complete1.call());
1595 >        final CompletableFuture<Integer> h2 = m.thenCombine(f, g, r2);
1596 >        checkIncomplete(h1);
1597 >        checkIncomplete(h2);
1598 >        assertTrue(complete2.call());
1599 >        final CompletableFuture<Integer> h3 = m.thenCombine(f, g, r3);
1600 >
1601 >        checkCompletedWithWrappedException(h1, ex);
1602 >        checkCompletedWithWrappedException(h2, ex);
1603 >        checkCompletedWithWrappedException(h3, ex);
1604 >        r1.assertNotInvoked();
1605 >        r2.assertNotInvoked();
1606 >        r3.assertNotInvoked();
1607 >        checkCompletedNormally(failFirst ? snd : fst, v1);
1608 >        checkCompletedExceptionally(failFirst ? fst : snd, ex);
1609 >    }}
1610  
1611      /**
1612 <     * thenApplyAsync result completes exceptionally if action does
1612 >     * thenCombine result completes exceptionally if either source cancelled
1613       */
1614 <    public void testThenApplyAsync3E() {
1615 <        CompletableFuture<Integer> f = new CompletableFuture<>();
1616 <        FailingFunction r = new FailingFunction();
1617 <        CompletableFuture<Integer> g = f.thenApplyAsync(r, new ThreadExecutor());
1618 <        f.complete(null);
1619 <        checkCompletedWithWrappedCFException(g);
1620 <    }
1614 >    public void testThenCombine_sourceCancelled() throws Throwable {
1615 >        for (ExecutionMode m : ExecutionMode.values())
1616 >        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1617 >        for (boolean fFirst : new boolean[] { true, false })
1618 >        for (boolean failFirst : new boolean[] { true, false })
1619 >        for (Integer v1 : new Integer[] { 1, null })
1620 >    {
1621 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1622 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
1623 >        final SubtractFunction r1 = new SubtractFunction(m);
1624 >        final SubtractFunction r2 = new SubtractFunction(m);
1625 >        final SubtractFunction r3 = new SubtractFunction(m);
1626 >
1627 >        final CompletableFuture<Integer> fst =  fFirst ? f : g;
1628 >        final CompletableFuture<Integer> snd = !fFirst ? f : g;
1629 >        final Callable<Boolean> complete1 = failFirst ?
1630 >            () -> fst.cancel(mayInterruptIfRunning) :
1631 >            () -> fst.complete(v1);
1632 >        final Callable<Boolean> complete2 = failFirst ?
1633 >            () -> snd.complete(v1) :
1634 >            () -> snd.cancel(mayInterruptIfRunning);
1635 >
1636 >        final CompletableFuture<Integer> h1 = m.thenCombine(f, g, r1);
1637 >        assertTrue(complete1.call());
1638 >        final CompletableFuture<Integer> h2 = m.thenCombine(f, g, r2);
1639 >        checkIncomplete(h1);
1640 >        checkIncomplete(h2);
1641 >        assertTrue(complete2.call());
1642 >        final CompletableFuture<Integer> h3 = m.thenCombine(f, g, r3);
1643 >
1644 >        checkCompletedWithWrappedCancellationException(h1);
1645 >        checkCompletedWithWrappedCancellationException(h2);
1646 >        checkCompletedWithWrappedCancellationException(h3);
1647 >        r1.assertNotInvoked();
1648 >        r2.assertNotInvoked();
1649 >        r3.assertNotInvoked();
1650 >        checkCompletedNormally(failFirst ? snd : fst, v1);
1651 >        checkCancelled(failFirst ? fst : snd);
1652 >    }}
1653  
1654      /**
1655 <     * thenApplyAsync result completes exceptionally if source cancelled
1655 >     * thenCombine result completes exceptionally if action does
1656       */
1657 <    public void testThenApplyAsync4E() {
1658 <        CompletableFuture<Integer> f = new CompletableFuture<>();
1659 <        CompletableFuture<Integer> g = f.thenApplyAsync(inc, new ThreadExecutor());
1660 <        assertTrue(f.cancel(true));
1661 <        checkCompletedWithWrappedCancellationException(g);
1662 <    }
1657 >    public void testThenCombine_actionFailed() {
1658 >        for (ExecutionMode m : ExecutionMode.values())
1659 >        for (boolean fFirst : new boolean[] { true, false })
1660 >        for (Integer v1 : new Integer[] { 1, null })
1661 >        for (Integer v2 : new Integer[] { 2, null })
1662 >    {
1663 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1664 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
1665 >        final FailingBiFunction r1 = new FailingBiFunction(m);
1666 >        final FailingBiFunction r2 = new FailingBiFunction(m);
1667 >        final FailingBiFunction r3 = new FailingBiFunction(m);
1668 >
1669 >        final CompletableFuture<Integer> fst =  fFirst ? f : g;
1670 >        final CompletableFuture<Integer> snd = !fFirst ? f : g;
1671 >        final Integer w1 =  fFirst ? v1 : v2;
1672 >        final Integer w2 = !fFirst ? v1 : v2;
1673 >
1674 >        final CompletableFuture<Integer> h1 = m.thenCombine(f, g, r1);
1675 >        assertTrue(fst.complete(w1));
1676 >        final CompletableFuture<Integer> h2 = m.thenCombine(f, g, r2);
1677 >        assertTrue(snd.complete(w2));
1678 >        final CompletableFuture<Integer> h3 = m.thenCombine(f, g, r3);
1679 >
1680 >        checkCompletedWithWrappedCFException(h1);
1681 >        checkCompletedWithWrappedCFException(h2);
1682 >        checkCompletedWithWrappedCFException(h3);
1683 >        r1.assertInvoked();
1684 >        r2.assertInvoked();
1685 >        r3.assertInvoked();
1686 >        checkCompletedNormally(f, v1);
1687 >        checkCompletedNormally(g, v2);
1688 >    }}
1689  
1690      /**
1691 <     * thenAcceptAsync result completes normally after normal
1692 <     * completion of source
1691 >     * thenAcceptBoth result completes normally after normal
1692 >     * completion of sources
1693       */
1694 <    public void testThenAcceptAsyncE() {
1695 <        CompletableFuture<Integer> f = new CompletableFuture<>();
1696 <        IncAction r = new IncAction();
1697 <        CompletableFuture<Void> g = f.thenAcceptAsync(r, new ThreadExecutor());
1698 <        f.complete(one);
1699 <        checkCompletedNormally(g, null);
1700 <        assertEquals(r.value, 2);
1701 <    }
1694 >    public void testThenAcceptBoth_normalCompletion() {
1695 >        for (ExecutionMode m : ExecutionMode.values())
1696 >        for (boolean fFirst : new boolean[] { true, false })
1697 >        for (Integer v1 : new Integer[] { 1, null })
1698 >        for (Integer v2 : new Integer[] { 2, null })
1699 >    {
1700 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1701 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
1702 >        final SubtractAction r1 = new SubtractAction(m);
1703 >        final SubtractAction r2 = new SubtractAction(m);
1704 >        final SubtractAction r3 = new SubtractAction(m);
1705 >
1706 >        final CompletableFuture<Integer> fst =  fFirst ? f : g;
1707 >        final CompletableFuture<Integer> snd = !fFirst ? f : g;
1708 >        final Integer w1 =  fFirst ? v1 : v2;
1709 >        final Integer w2 = !fFirst ? v1 : v2;
1710 >
1711 >        final CompletableFuture<Void> h1 = m.thenAcceptBoth(f, g, r1);
1712 >        assertTrue(fst.complete(w1));
1713 >        final CompletableFuture<Void> h2 = m.thenAcceptBoth(f, g, r2);
1714 >        checkIncomplete(h1);
1715 >        checkIncomplete(h2);
1716 >        r1.assertNotInvoked();
1717 >        r2.assertNotInvoked();
1718 >        assertTrue(snd.complete(w2));
1719 >        final CompletableFuture<Void> h3 = m.thenAcceptBoth(f, g, r3);
1720 >
1721 >        checkCompletedNormally(h1, null);
1722 >        checkCompletedNormally(h2, null);
1723 >        checkCompletedNormally(h3, null);
1724 >        r1.assertValue(subtract(v1, v2));
1725 >        r2.assertValue(subtract(v1, v2));
1726 >        r3.assertValue(subtract(v1, v2));
1727 >        checkCompletedNormally(f, v1);
1728 >        checkCompletedNormally(g, v2);
1729 >    }}
1730  
1731      /**
1732 <     * thenAcceptAsync result completes exceptionally after exceptional
1733 <     * completion of source
1732 >     * thenAcceptBoth result completes exceptionally after exceptional
1733 >     * completion of either source
1734       */
1735 <    public void testThenAcceptAsync2E() {
1736 <        CompletableFuture<Integer> f = new CompletableFuture<>();
1737 <        IncAction r = new IncAction();
1738 <        CompletableFuture<Void> g = f.thenAcceptAsync(r, new ThreadExecutor());
1739 <        f.completeExceptionally(new CFException());
1740 <        checkCompletedWithWrappedCFException(g);
1741 <    }
1735 >    public void testThenAcceptBoth_exceptionalCompletion() throws Throwable {
1736 >        for (ExecutionMode m : ExecutionMode.values())
1737 >        for (boolean fFirst : new boolean[] { true, false })
1738 >        for (boolean failFirst : new boolean[] { true, false })
1739 >        for (Integer v1 : new Integer[] { 1, null })
1740 >    {
1741 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1742 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
1743 >        final CFException ex = new CFException();
1744 >        final SubtractAction r1 = new SubtractAction(m);
1745 >        final SubtractAction r2 = new SubtractAction(m);
1746 >        final SubtractAction r3 = new SubtractAction(m);
1747 >
1748 >        final CompletableFuture<Integer> fst =  fFirst ? f : g;
1749 >        final CompletableFuture<Integer> snd = !fFirst ? f : g;
1750 >        final Callable<Boolean> complete1 = failFirst ?
1751 >            () -> fst.completeExceptionally(ex) :
1752 >            () -> fst.complete(v1);
1753 >        final Callable<Boolean> complete2 = failFirst ?
1754 >            () -> snd.complete(v1) :
1755 >            () -> snd.completeExceptionally(ex);
1756 >
1757 >        final CompletableFuture<Void> h1 = m.thenAcceptBoth(f, g, r1);
1758 >        assertTrue(complete1.call());
1759 >        final CompletableFuture<Void> h2 = m.thenAcceptBoth(f, g, r2);
1760 >        checkIncomplete(h1);
1761 >        checkIncomplete(h2);
1762 >        assertTrue(complete2.call());
1763 >        final CompletableFuture<Void> h3 = m.thenAcceptBoth(f, g, r3);
1764 >
1765 >        checkCompletedWithWrappedException(h1, ex);
1766 >        checkCompletedWithWrappedException(h2, ex);
1767 >        checkCompletedWithWrappedException(h3, ex);
1768 >        r1.assertNotInvoked();
1769 >        r2.assertNotInvoked();
1770 >        r3.assertNotInvoked();
1771 >        checkCompletedNormally(failFirst ? snd : fst, v1);
1772 >        checkCompletedExceptionally(failFirst ? fst : snd, ex);
1773 >    }}
1774  
1775      /**
1776 <     * thenAcceptAsync result completes exceptionally if action does
1776 >     * thenAcceptBoth result completes exceptionally if either source cancelled
1777       */
1778 <    public void testThenAcceptAsync3E() {
1779 <        CompletableFuture<Integer> f = new CompletableFuture<>();
1780 <        FailingConsumer r = new FailingConsumer();
1781 <        CompletableFuture<Void> g = f.thenAcceptAsync(r, new ThreadExecutor());
1782 <        f.complete(null);
1783 <        checkCompletedWithWrappedCFException(g);
1784 <    }
1778 >    public void testThenAcceptBoth_sourceCancelled() throws Throwable {
1779 >        for (ExecutionMode m : ExecutionMode.values())
1780 >        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1781 >        for (boolean fFirst : new boolean[] { true, false })
1782 >        for (boolean failFirst : new boolean[] { true, false })
1783 >        for (Integer v1 : new Integer[] { 1, null })
1784 >    {
1785 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1786 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
1787 >        final SubtractAction r1 = new SubtractAction(m);
1788 >        final SubtractAction r2 = new SubtractAction(m);
1789 >        final SubtractAction r3 = new SubtractAction(m);
1790 >
1791 >        final CompletableFuture<Integer> fst =  fFirst ? f : g;
1792 >        final CompletableFuture<Integer> snd = !fFirst ? f : g;
1793 >        final Callable<Boolean> complete1 = failFirst ?
1794 >            () -> fst.cancel(mayInterruptIfRunning) :
1795 >            () -> fst.complete(v1);
1796 >        final Callable<Boolean> complete2 = failFirst ?
1797 >            () -> snd.complete(v1) :
1798 >            () -> snd.cancel(mayInterruptIfRunning);
1799 >
1800 >        final CompletableFuture<Void> h1 = m.thenAcceptBoth(f, g, r1);
1801 >        assertTrue(complete1.call());
1802 >        final CompletableFuture<Void> h2 = m.thenAcceptBoth(f, g, r2);
1803 >        checkIncomplete(h1);
1804 >        checkIncomplete(h2);
1805 >        assertTrue(complete2.call());
1806 >        final CompletableFuture<Void> h3 = m.thenAcceptBoth(f, g, r3);
1807 >
1808 >        checkCompletedWithWrappedCancellationException(h1);
1809 >        checkCompletedWithWrappedCancellationException(h2);
1810 >        checkCompletedWithWrappedCancellationException(h3);
1811 >        r1.assertNotInvoked();
1812 >        r2.assertNotInvoked();
1813 >        r3.assertNotInvoked();
1814 >        checkCompletedNormally(failFirst ? snd : fst, v1);
1815 >        checkCancelled(failFirst ? fst : snd);
1816 >    }}
1817  
1818      /**
1819 <     * thenAcceptAsync result completes exceptionally if source cancelled
1819 >     * thenAcceptBoth result completes exceptionally if action does
1820       */
1821 <    public void testThenAcceptAsync4E() {
1822 <        CompletableFuture<Integer> f = new CompletableFuture<>();
1823 <        IncAction r = new IncAction();
1824 <        CompletableFuture<Void> g = f.thenAcceptAsync(r, new ThreadExecutor());
1825 <        assertTrue(f.cancel(true));
1826 <        checkCompletedWithWrappedCancellationException(g);
1827 <    }
1821 >    public void testThenAcceptBoth_actionFailed() {
1822 >        for (ExecutionMode m : ExecutionMode.values())
1823 >        for (boolean fFirst : new boolean[] { true, false })
1824 >        for (Integer v1 : new Integer[] { 1, null })
1825 >        for (Integer v2 : new Integer[] { 2, null })
1826 >    {
1827 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1828 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
1829 >        final FailingBiConsumer r1 = new FailingBiConsumer(m);
1830 >        final FailingBiConsumer r2 = new FailingBiConsumer(m);
1831 >        final FailingBiConsumer r3 = new FailingBiConsumer(m);
1832 >
1833 >        final CompletableFuture<Integer> fst =  fFirst ? f : g;
1834 >        final CompletableFuture<Integer> snd = !fFirst ? f : g;
1835 >        final Integer w1 =  fFirst ? v1 : v2;
1836 >        final Integer w2 = !fFirst ? v1 : v2;
1837 >
1838 >        final CompletableFuture<Void> h1 = m.thenAcceptBoth(f, g, r1);
1839 >        assertTrue(fst.complete(w1));
1840 >        final CompletableFuture<Void> h2 = m.thenAcceptBoth(f, g, r2);
1841 >        assertTrue(snd.complete(w2));
1842 >        final CompletableFuture<Void> h3 = m.thenAcceptBoth(f, g, r3);
1843 >
1844 >        checkCompletedWithWrappedCFException(h1);
1845 >        checkCompletedWithWrappedCFException(h2);
1846 >        checkCompletedWithWrappedCFException(h3);
1847 >        r1.assertInvoked();
1848 >        r2.assertInvoked();
1849 >        r3.assertInvoked();
1850 >        checkCompletedNormally(f, v1);
1851 >        checkCompletedNormally(g, v2);
1852 >    }}
1853  
1854      /**
1855 <     * thenCombineAsync result completes normally after normal
1855 >     * runAfterBoth result completes normally after normal
1856       * completion of sources
1857       */
1858 <    public void testThenCombineAsyncE() {
1859 <        CompletableFuture<Integer> f, g, h;
1860 <        ThreadExecutor e = new ThreadExecutor();
1861 <        int count = 0;
1862 <
1863 <        f = new CompletableFuture<>();
1864 <        g = new CompletableFuture<>();
1865 <        h = f.thenCombineAsync(g, subtract, e);
1866 <        f.complete(3);
1867 <        checkIncomplete(h);
1868 <        g.complete(1);
1869 <        checkCompletedNormally(h, 2);
1870 <        assertEquals(++count, e.count.get());
1871 <
1872 <        f = new CompletableFuture<>();
1873 <        g = new CompletableFuture<>();
1874 <        h = f.thenCombineAsync(g, subtract, e);
1875 <        g.complete(1);
1876 <        checkIncomplete(h);
1877 <        f.complete(3);
1878 <        checkCompletedNormally(h, 2);
1879 <        assertEquals(++count, e.count.get());
1880 <
1881 <        f = new CompletableFuture<>();
1882 <        g = new CompletableFuture<>();
1883 <        g.complete(1);
1884 <        f.complete(3);
1885 <        h = f.thenCombineAsync(g, subtract, e);
1886 <        checkCompletedNormally(h, 2);
1887 <        assertEquals(++count, e.count.get());
1888 <    }
1858 >    public void testRunAfterBoth_normalCompletion() {
1859 >        for (ExecutionMode m : ExecutionMode.values())
1860 >        for (boolean fFirst : new boolean[] { true, false })
1861 >        for (Integer v1 : new Integer[] { 1, null })
1862 >        for (Integer v2 : new Integer[] { 2, null })
1863 >    {
1864 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1865 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
1866 >        final Noop r1 = new Noop(m);
1867 >        final Noop r2 = new Noop(m);
1868 >        final Noop r3 = new Noop(m);
1869 >
1870 >        final CompletableFuture<Integer> fst =  fFirst ? f : g;
1871 >        final CompletableFuture<Integer> snd = !fFirst ? f : g;
1872 >        final Integer w1 =  fFirst ? v1 : v2;
1873 >        final Integer w2 = !fFirst ? v1 : v2;
1874 >
1875 >        final CompletableFuture<Void> h1 = m.runAfterBoth(f, g, r1);
1876 >        assertTrue(fst.complete(w1));
1877 >        final CompletableFuture<Void> h2 = m.runAfterBoth(f, g, r2);
1878 >        checkIncomplete(h1);
1879 >        checkIncomplete(h2);
1880 >        r1.assertNotInvoked();
1881 >        r2.assertNotInvoked();
1882 >        assertTrue(snd.complete(w2));
1883 >        final CompletableFuture<Void> h3 = m.runAfterBoth(f, g, r3);
1884 >
1885 >        checkCompletedNormally(h1, null);
1886 >        checkCompletedNormally(h2, null);
1887 >        checkCompletedNormally(h3, null);
1888 >        r1.assertInvoked();
1889 >        r2.assertInvoked();
1890 >        r3.assertInvoked();
1891 >        checkCompletedNormally(f, v1);
1892 >        checkCompletedNormally(g, v2);
1893 >    }}
1894  
1895      /**
1896 <     * thenCombineAsync result completes exceptionally after exceptional
1896 >     * runAfterBoth result completes exceptionally after exceptional
1897       * completion of either source
1898       */
1899 <    public void testThenCombineAsync2E() {
1900 <        CompletableFuture<Integer> f, g, h;
1901 <        ThreadExecutor e = new ThreadExecutor();
1902 <        int count = 0;
1903 <
1904 <        f = new CompletableFuture<>();
1905 <        g = new CompletableFuture<>();
1906 <        h = f.thenCombineAsync(g, subtract, e);
1907 <        f.completeExceptionally(new CFException());
1908 <        checkIncomplete(h);
1909 <        g.complete(1);
1910 <        checkCompletedWithWrappedCFException(h);
1911 <
1912 <        f = new CompletableFuture<>();
1913 <        g = new CompletableFuture<>();
1914 <        h = f.thenCombineAsync(g, subtract, e);
1915 <        g.completeExceptionally(new CFException());
1916 <        checkIncomplete(h);
1917 <        f.complete(3);
1918 <        checkCompletedWithWrappedCFException(h);
1919 <
1920 <        f = new CompletableFuture<>();
1921 <        g = new CompletableFuture<>();
1922 <        g.completeExceptionally(new CFException());
1923 <        h = f.thenCombineAsync(g, subtract, e);
1924 <        checkIncomplete(h);
1925 <        f.complete(3);
1926 <        checkCompletedWithWrappedCFException(h);
1927 <
1928 <        assertEquals(0, e.count.get());
1929 <    }
1899 >    public void testRunAfterBoth_exceptionalCompletion() throws Throwable {
1900 >        for (ExecutionMode m : ExecutionMode.values())
1901 >        for (boolean fFirst : new boolean[] { true, false })
1902 >        for (boolean failFirst : new boolean[] { true, false })
1903 >        for (Integer v1 : new Integer[] { 1, null })
1904 >    {
1905 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1906 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
1907 >        final CFException ex = new CFException();
1908 >        final Noop r1 = new Noop(m);
1909 >        final Noop r2 = new Noop(m);
1910 >        final Noop r3 = new Noop(m);
1911 >
1912 >        final CompletableFuture<Integer> fst =  fFirst ? f : g;
1913 >        final CompletableFuture<Integer> snd = !fFirst ? f : g;
1914 >        final Callable<Boolean> complete1 = failFirst ?
1915 >            () -> fst.completeExceptionally(ex) :
1916 >            () -> fst.complete(v1);
1917 >        final Callable<Boolean> complete2 = failFirst ?
1918 >            () -> snd.complete(v1) :
1919 >            () -> snd.completeExceptionally(ex);
1920 >
1921 >        final CompletableFuture<Void> h1 = m.runAfterBoth(f, g, r1);
1922 >        assertTrue(complete1.call());
1923 >        final CompletableFuture<Void> h2 = m.runAfterBoth(f, g, r2);
1924 >        checkIncomplete(h1);
1925 >        checkIncomplete(h2);
1926 >        assertTrue(complete2.call());
1927 >        final CompletableFuture<Void> h3 = m.runAfterBoth(f, g, r3);
1928 >
1929 >        checkCompletedWithWrappedException(h1, ex);
1930 >        checkCompletedWithWrappedException(h2, ex);
1931 >        checkCompletedWithWrappedException(h3, ex);
1932 >        r1.assertNotInvoked();
1933 >        r2.assertNotInvoked();
1934 >        r3.assertNotInvoked();
1935 >        checkCompletedNormally(failFirst ? snd : fst, v1);
1936 >        checkCompletedExceptionally(failFirst ? fst : snd, ex);
1937 >    }}
1938  
1939      /**
1940 <     * thenCombineAsync result completes exceptionally if action does
1940 >     * runAfterBoth result completes exceptionally if either source cancelled
1941       */
1942 <    public void testThenCombineAsync3E() {
1943 <        CompletableFuture<Integer> f = new CompletableFuture<>();
1944 <        CompletableFuture<Integer> f2 = new CompletableFuture<>();
1945 <        FailingBiFunction r = new FailingBiFunction();
1946 <        CompletableFuture<Integer> g = f.thenCombineAsync(f2, r, new ThreadExecutor());
1947 <        f.complete(one);
1948 <        checkIncomplete(g);
1949 <        assertFalse(r.ran);
1950 <        f2.complete(two);
1951 <        checkCompletedWithWrappedCFException(g);
1952 <        assertTrue(r.ran);
1953 <    }
1942 >    public void testRunAfterBoth_sourceCancelled() throws Throwable {
1943 >        for (ExecutionMode m : ExecutionMode.values())
1944 >        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1945 >        for (boolean fFirst : new boolean[] { true, false })
1946 >        for (boolean failFirst : new boolean[] { true, false })
1947 >        for (Integer v1 : new Integer[] { 1, null })
1948 >    {
1949 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1950 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
1951 >        final Noop r1 = new Noop(m);
1952 >        final Noop r2 = new Noop(m);
1953 >        final Noop r3 = new Noop(m);
1954 >
1955 >        final CompletableFuture<Integer> fst =  fFirst ? f : g;
1956 >        final CompletableFuture<Integer> snd = !fFirst ? f : g;
1957 >        final Callable<Boolean> complete1 = failFirst ?
1958 >            () -> fst.cancel(mayInterruptIfRunning) :
1959 >            () -> fst.complete(v1);
1960 >        final Callable<Boolean> complete2 = failFirst ?
1961 >            () -> snd.complete(v1) :
1962 >            () -> snd.cancel(mayInterruptIfRunning);
1963 >
1964 >        final CompletableFuture<Void> h1 = m.runAfterBoth(f, g, r1);
1965 >        assertTrue(complete1.call());
1966 >        final CompletableFuture<Void> h2 = m.runAfterBoth(f, g, r2);
1967 >        checkIncomplete(h1);
1968 >        checkIncomplete(h2);
1969 >        assertTrue(complete2.call());
1970 >        final CompletableFuture<Void> h3 = m.runAfterBoth(f, g, r3);
1971 >
1972 >        checkCompletedWithWrappedCancellationException(h1);
1973 >        checkCompletedWithWrappedCancellationException(h2);
1974 >        checkCompletedWithWrappedCancellationException(h3);
1975 >        r1.assertNotInvoked();
1976 >        r2.assertNotInvoked();
1977 >        r3.assertNotInvoked();
1978 >        checkCompletedNormally(failFirst ? snd : fst, v1);
1979 >        checkCancelled(failFirst ? fst : snd);
1980 >    }}
1981  
1982      /**
1983 <     * thenCombineAsync result completes exceptionally if either source cancelled
1983 >     * runAfterBoth result completes exceptionally if action does
1984       */
1985 <    public void testThenCombineAsync4E() {
1986 <        CompletableFuture<Integer> f, g, h;
1987 <        ThreadExecutor e = new ThreadExecutor();
1988 <
1989 <        f = new CompletableFuture<>();
1990 <        g = new CompletableFuture<>();
1991 <        h = f.thenCombineAsync(g, subtract, e);
1992 <        assertTrue(f.cancel(true));
1993 <        checkIncomplete(h);
1994 <        g.complete(1);
1995 <        checkCompletedWithWrappedCancellationException(h);
1996 <
1997 <        f = new CompletableFuture<>();
1998 <        g = new CompletableFuture<>();
1999 <        h = f.thenCombineAsync(g, subtract, e);
2000 <        assertTrue(g.cancel(true));
2001 <        checkIncomplete(h);
2002 <        f.complete(3);
2003 <        checkCompletedWithWrappedCancellationException(h);
2004 <
2005 <        f = new CompletableFuture<>();
2006 <        g = new CompletableFuture<>();
2007 <        assertTrue(g.cancel(true));
2008 <        h = f.thenCombineAsync(g, subtract, e);
2009 <        checkIncomplete(h);
2010 <        f.complete(3);
2011 <        checkCompletedWithWrappedCancellationException(h);
2012 <
2013 <        f = new CompletableFuture<>();
2014 <        g = new CompletableFuture<>();
2015 <        assertTrue(f.cancel(true));
2016 <        assertTrue(g.cancel(true));
2357 <        h = f.thenCombineAsync(g, subtract, e);
2358 <        checkCompletedWithWrappedCancellationException(h);
2359 <
2360 <        assertEquals(0, e.count.get());
2361 <    }
1985 >    public void testRunAfterBoth_actionFailed() {
1986 >        for (ExecutionMode m : ExecutionMode.values())
1987 >        for (boolean fFirst : new boolean[] { true, false })
1988 >        for (Integer v1 : new Integer[] { 1, null })
1989 >        for (Integer v2 : new Integer[] { 2, null })
1990 >    {
1991 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1992 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
1993 >        final FailingRunnable r1 = new FailingRunnable(m);
1994 >        final FailingRunnable r2 = new FailingRunnable(m);
1995 >        final FailingRunnable r3 = new FailingRunnable(m);
1996 >
1997 >        final CompletableFuture<Integer> fst =  fFirst ? f : g;
1998 >        final CompletableFuture<Integer> snd = !fFirst ? f : g;
1999 >        final Integer w1 =  fFirst ? v1 : v2;
2000 >        final Integer w2 = !fFirst ? v1 : v2;
2001 >
2002 >        final CompletableFuture<Void> h1 = m.runAfterBoth(f, g, r1);
2003 >        assertTrue(fst.complete(w1));
2004 >        final CompletableFuture<Void> h2 = m.runAfterBoth(f, g, r2);
2005 >        assertTrue(snd.complete(w2));
2006 >        final CompletableFuture<Void> h3 = m.runAfterBoth(f, g, r3);
2007 >
2008 >        checkCompletedWithWrappedCFException(h1);
2009 >        checkCompletedWithWrappedCFException(h2);
2010 >        checkCompletedWithWrappedCFException(h3);
2011 >        r1.assertInvoked();
2012 >        r2.assertInvoked();
2013 >        r3.assertInvoked();
2014 >        checkCompletedNormally(f, v1);
2015 >        checkCompletedNormally(g, v2);
2016 >    }}
2017  
2018      /**
2019 <     * thenAcceptBothAsync result completes normally after normal
2020 <     * completion of sources
2019 >     * applyToEither result completes normally after normal completion
2020 >     * of either source
2021       */
2022 <    public void testThenAcceptBothAsyncE() {
2023 <        CompletableFuture<Integer> f, g;
2024 <        CompletableFuture<Void> h;
2025 <        SubtractAction r;
2026 <        ThreadExecutor e = new ThreadExecutor();
2027 <
2028 <        f = new CompletableFuture<>();
2029 <        g = new CompletableFuture<>();
2030 <        h = f.thenAcceptBothAsync(g, r = new SubtractAction(), e);
2031 <        f.complete(3);
2032 <        checkIncomplete(h);
2033 <        g.complete(1);
2034 <        checkCompletedNormally(h, null);
2035 <        assertEquals(r.value, 2);
2036 <
2037 <        f = new CompletableFuture<>();
2038 <        g = new CompletableFuture<>();
2039 <        h = f.thenAcceptBothAsync(g, r = new SubtractAction(), e);
2040 <        g.complete(1);
2041 <        checkIncomplete(h);
2042 <        f.complete(3);
2043 <        checkCompletedNormally(h, null);
2044 <        assertEquals(r.value, 2);
2045 <
2046 <        f = new CompletableFuture<>();
2047 <        g = new CompletableFuture<>();
2048 <        g.complete(1);
2049 <        f.complete(3);
2050 <        h = f.thenAcceptBothAsync(g, r = new SubtractAction(), e);
2051 <        checkCompletedNormally(h, null);
2052 <        assertEquals(r.value, 2);
2053 <
2054 <        assertEquals(3, e.count.get());
2055 <    }
2022 >    public void testApplyToEither_normalCompletion() {
2023 >        for (ExecutionMode m : ExecutionMode.values())
2024 >        for (Integer v1 : new Integer[] { 1, null })
2025 >        for (Integer v2 : new Integer[] { 2, null })
2026 >    {
2027 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
2028 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
2029 >        final IncFunction[] rs = new IncFunction[6];
2030 >        for (int i = 0; i < rs.length; i++) rs[i] = new IncFunction(m);
2031 >
2032 >        final CompletableFuture<Integer> h0 = m.applyToEither(f, g, rs[0]);
2033 >        final CompletableFuture<Integer> h1 = m.applyToEither(g, f, rs[1]);
2034 >        checkIncomplete(h0);
2035 >        checkIncomplete(h1);
2036 >        rs[0].assertNotInvoked();
2037 >        rs[1].assertNotInvoked();
2038 >        f.complete(v1);
2039 >        checkCompletedNormally(h0, inc(v1));
2040 >        checkCompletedNormally(h1, inc(v1));
2041 >        final CompletableFuture<Integer> h2 = m.applyToEither(f, g, rs[2]);
2042 >        final CompletableFuture<Integer> h3 = m.applyToEither(g, f, rs[3]);
2043 >        checkCompletedNormally(h2, inc(v1));
2044 >        checkCompletedNormally(h3, inc(v1));
2045 >        g.complete(v2);
2046 >
2047 >        // unspecified behavior - both source completions available
2048 >        final CompletableFuture<Integer> h4 = m.applyToEither(f, g, rs[4]);
2049 >        final CompletableFuture<Integer> h5 = m.applyToEither(g, f, rs[5]);
2050 >        rs[4].assertValue(h4.join());
2051 >        rs[5].assertValue(h5.join());
2052 >        assertTrue(Objects.equals(inc(v1), h4.join()) ||
2053 >                   Objects.equals(inc(v2), h4.join()));
2054 >        assertTrue(Objects.equals(inc(v1), h5.join()) ||
2055 >                   Objects.equals(inc(v2), h5.join()));
2056 >
2057 >        checkCompletedNormally(f, v1);
2058 >        checkCompletedNormally(g, v2);
2059 >        checkCompletedNormally(h0, inc(v1));
2060 >        checkCompletedNormally(h1, inc(v1));
2061 >        checkCompletedNormally(h2, inc(v1));
2062 >        checkCompletedNormally(h3, inc(v1));
2063 >        for (int i = 0; i < 4; i++) rs[i].assertValue(inc(v1));
2064 >    }}
2065  
2066      /**
2067 <     * thenAcceptBothAsync result completes exceptionally after exceptional
2068 <     * completion of source
2067 >     * applyToEither result completes exceptionally after exceptional
2068 >     * completion of either source
2069       */
2070 <    public void testThenAcceptBothAsync2E() {
2071 <        CompletableFuture<Integer> f, g;
2072 <        CompletableFuture<Void> h;
2073 <        SubtractAction r;
2074 <        ThreadExecutor e = new ThreadExecutor();
2075 <
2076 <        f = new CompletableFuture<>();
2077 <        g = new CompletableFuture<>();
2078 <        h = f.thenAcceptBothAsync(g, r = new SubtractAction(), e);
2079 <        f.completeExceptionally(new CFException());
2080 <        checkIncomplete(h);
2081 <        g.complete(1);
2082 <        checkCompletedWithWrappedCFException(h);
2070 >    public void testApplyToEither_exceptionalCompletion() {
2071 >        for (ExecutionMode m : ExecutionMode.values())
2072 >        for (Integer v1 : new Integer[] { 1, null })
2073 >    {
2074 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
2075 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
2076 >        final CFException ex = new CFException();
2077 >        final IncFunction[] rs = new IncFunction[6];
2078 >        for (int i = 0; i < rs.length; i++) rs[i] = new IncFunction(m);
2079 >
2080 >        final CompletableFuture<Integer> h0 = m.applyToEither(f, g, rs[0]);
2081 >        final CompletableFuture<Integer> h1 = m.applyToEither(g, f, rs[1]);
2082 >        checkIncomplete(h0);
2083 >        checkIncomplete(h1);
2084 >        rs[0].assertNotInvoked();
2085 >        rs[1].assertNotInvoked();
2086 >        f.completeExceptionally(ex);
2087 >        checkCompletedWithWrappedException(h0, ex);
2088 >        checkCompletedWithWrappedException(h1, ex);
2089 >        final CompletableFuture<Integer> h2 = m.applyToEither(f, g, rs[2]);
2090 >        final CompletableFuture<Integer> h3 = m.applyToEither(g, f, rs[3]);
2091 >        checkCompletedWithWrappedException(h2, ex);
2092 >        checkCompletedWithWrappedException(h3, ex);
2093 >        g.complete(v1);
2094 >
2095 >        // unspecified behavior - both source completions available
2096 >        final CompletableFuture<Integer> h4 = m.applyToEither(f, g, rs[4]);
2097 >        final CompletableFuture<Integer> h5 = m.applyToEither(g, f, rs[5]);
2098 >        try {
2099 >            assertEquals(inc(v1), h4.join());
2100 >            rs[4].assertValue(inc(v1));
2101 >        } catch (CompletionException ok) {
2102 >            checkCompletedWithWrappedException(h4, ex);
2103 >            rs[4].assertNotInvoked();
2104 >        }
2105 >        try {
2106 >            assertEquals(inc(v1), h5.join());
2107 >            rs[5].assertValue(inc(v1));
2108 >        } catch (CompletionException ok) {
2109 >            checkCompletedWithWrappedException(h5, ex);
2110 >            rs[5].assertNotInvoked();
2111 >        }
2112  
2113 <        f = new CompletableFuture<>();
2114 <        g = new CompletableFuture<>();
2115 <        h = f.thenAcceptBothAsync(g, r = new SubtractAction(), e);
2116 <        g.completeExceptionally(new CFException());
2117 <        checkIncomplete(h);
2118 <        f.complete(3);
2119 <        checkCompletedWithWrappedCFException(h);
2113 >        checkCompletedExceptionally(f, ex);
2114 >        checkCompletedNormally(g, v1);
2115 >        checkCompletedWithWrappedException(h0, ex);
2116 >        checkCompletedWithWrappedException(h1, ex);
2117 >        checkCompletedWithWrappedException(h2, ex);
2118 >        checkCompletedWithWrappedException(h3, ex);
2119 >        checkCompletedWithWrappedException(h4, ex);
2120 >        for (int i = 0; i < 4; i++) rs[i].assertNotInvoked();
2121 >    }}
2122 >
2123 >    public void testApplyToEither_exceptionalCompletion2() {
2124 >        for (ExecutionMode m : ExecutionMode.values())
2125 >        for (boolean fFirst : new boolean[] { true, false })
2126 >        for (Integer v1 : new Integer[] { 1, null })
2127 >    {
2128 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
2129 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
2130 >        final CFException ex = new CFException();
2131 >        final IncFunction[] rs = new IncFunction[6];
2132 >        for (int i = 0; i < rs.length; i++) rs[i] = new IncFunction(m);
2133 >
2134 >        final CompletableFuture<Integer> h0 = m.applyToEither(f, g, rs[0]);
2135 >        final CompletableFuture<Integer> h1 = m.applyToEither(g, f, rs[1]);
2136 >        assertTrue(fFirst ? f.complete(v1) : g.completeExceptionally(ex));
2137 >        assertTrue(!fFirst ? f.complete(v1) : g.completeExceptionally(ex));
2138 >        final CompletableFuture<Integer> h2 = m.applyToEither(f, g, rs[2]);
2139 >        final CompletableFuture<Integer> h3 = m.applyToEither(g, f, rs[3]);
2140  
2141 <        f = new CompletableFuture<>();
2142 <        g = new CompletableFuture<>();
2143 <        f.complete(3);
2144 <        g.completeExceptionally(new CFException());
2145 <        h = f.thenAcceptBothAsync(g, r = new SubtractAction(), e);
2146 <        checkCompletedWithWrappedCFException(h);
2147 <
2148 <        f = new CompletableFuture<>();
2149 <        g = new CompletableFuture<>();
2150 <        f.completeExceptionally(new CFException());
2151 <        g.complete(3);
2152 <        h = f.thenAcceptBothAsync(g, r = new SubtractAction(), e);
2153 <        checkCompletedWithWrappedCFException(h);
2141 >        // unspecified behavior - both source completions available
2142 >        try {
2143 >            assertEquals(inc(v1), h0.join());
2144 >            rs[0].assertValue(inc(v1));
2145 >        } catch (CompletionException ok) {
2146 >            checkCompletedWithWrappedException(h0, ex);
2147 >            rs[0].assertNotInvoked();
2148 >        }
2149 >        try {
2150 >            assertEquals(inc(v1), h1.join());
2151 >            rs[1].assertValue(inc(v1));
2152 >        } catch (CompletionException ok) {
2153 >            checkCompletedWithWrappedException(h1, ex);
2154 >            rs[1].assertNotInvoked();
2155 >        }
2156 >        try {
2157 >            assertEquals(inc(v1), h2.join());
2158 >            rs[2].assertValue(inc(v1));
2159 >        } catch (CompletionException ok) {
2160 >            checkCompletedWithWrappedException(h2, ex);
2161 >            rs[2].assertNotInvoked();
2162 >        }
2163 >        try {
2164 >            assertEquals(inc(v1), h3.join());
2165 >            rs[3].assertValue(inc(v1));
2166 >        } catch (CompletionException ok) {
2167 >            checkCompletedWithWrappedException(h3, ex);
2168 >            rs[3].assertNotInvoked();
2169 >        }
2170  
2171 <        assertEquals(0, e.count.get());
2172 <    }
2171 >        checkCompletedNormally(f, v1);
2172 >        checkCompletedExceptionally(g, ex);
2173 >    }}
2174  
2175      /**
2176 <     * thenAcceptBothAsync result completes exceptionally if action does
2176 >     * applyToEither result completes exceptionally if either source cancelled
2177       */
2178 <    public void testThenAcceptBothAsync3E() {
2179 <        CompletableFuture<Integer> f, g;
2180 <        CompletableFuture<Void> h;
2181 <        FailingBiConsumer r;
2182 <        ThreadExecutor e = new ThreadExecutor();
2178 >    public void testApplyToEither_sourceCancelled() {
2179 >        for (ExecutionMode m : ExecutionMode.values())
2180 >        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2181 >        for (Integer v1 : new Integer[] { 1, null })
2182 >    {
2183 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
2184 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
2185 >        final IncFunction[] rs = new IncFunction[6];
2186 >        for (int i = 0; i < rs.length; i++) rs[i] = new IncFunction(m);
2187 >
2188 >        final CompletableFuture<Integer> h0 = m.applyToEither(f, g, rs[0]);
2189 >        final CompletableFuture<Integer> h1 = m.applyToEither(g, f, rs[1]);
2190 >        checkIncomplete(h0);
2191 >        checkIncomplete(h1);
2192 >        rs[0].assertNotInvoked();
2193 >        rs[1].assertNotInvoked();
2194 >        f.cancel(mayInterruptIfRunning);
2195 >        checkCompletedWithWrappedCancellationException(h0);
2196 >        checkCompletedWithWrappedCancellationException(h1);
2197 >        final CompletableFuture<Integer> h2 = m.applyToEither(f, g, rs[2]);
2198 >        final CompletableFuture<Integer> h3 = m.applyToEither(g, f, rs[3]);
2199 >        checkCompletedWithWrappedCancellationException(h2);
2200 >        checkCompletedWithWrappedCancellationException(h3);
2201 >        g.complete(v1);
2202 >
2203 >        // unspecified behavior - both source completions available
2204 >        final CompletableFuture<Integer> h4 = m.applyToEither(f, g, rs[4]);
2205 >        final CompletableFuture<Integer> h5 = m.applyToEither(g, f, rs[5]);
2206 >        try {
2207 >            assertEquals(inc(v1), h4.join());
2208 >            rs[4].assertValue(inc(v1));
2209 >        } catch (CompletionException ok) {
2210 >            checkCompletedWithWrappedCancellationException(h4);
2211 >            rs[4].assertNotInvoked();
2212 >        }
2213 >        try {
2214 >            assertEquals(inc(v1), h5.join());
2215 >            rs[5].assertValue(inc(v1));
2216 >        } catch (CompletionException ok) {
2217 >            checkCompletedWithWrappedCancellationException(h5);
2218 >            rs[5].assertNotInvoked();
2219 >        }
2220  
2221 <        f = new CompletableFuture<>();
2222 <        g = new CompletableFuture<>();
2223 <        h = f.thenAcceptBothAsync(g, r = new FailingBiConsumer(), e);
2224 <        f.complete(3);
2225 <        checkIncomplete(h);
2226 <        g.complete(1);
2227 <        checkCompletedWithWrappedCFException(h);
2221 >        checkCancelled(f);
2222 >        checkCompletedNormally(g, v1);
2223 >        checkCompletedWithWrappedCancellationException(h0);
2224 >        checkCompletedWithWrappedCancellationException(h1);
2225 >        checkCompletedWithWrappedCancellationException(h2);
2226 >        checkCompletedWithWrappedCancellationException(h3);
2227 >        for (int i = 0; i < 4; i++) rs[i].assertNotInvoked();
2228 >    }}
2229 >
2230 >    public void testApplyToEither_sourceCancelled2() {
2231 >        for (ExecutionMode m : ExecutionMode.values())
2232 >        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2233 >        for (boolean fFirst : new boolean[] { true, false })
2234 >        for (Integer v1 : new Integer[] { 1, null })
2235 >    {
2236 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
2237 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
2238 >        final IncFunction[] rs = new IncFunction[6];
2239 >        for (int i = 0; i < rs.length; i++) rs[i] = new IncFunction(m);
2240 >
2241 >        final CompletableFuture<Integer> h0 = m.applyToEither(f, g, rs[0]);
2242 >        final CompletableFuture<Integer> h1 = m.applyToEither(g, f, rs[1]);
2243 >        assertTrue(fFirst ? f.complete(v1) : g.cancel(mayInterruptIfRunning));
2244 >        assertTrue(!fFirst ? f.complete(v1) : g.cancel(mayInterruptIfRunning));
2245 >        final CompletableFuture<Integer> h2 = m.applyToEither(f, g, rs[2]);
2246 >        final CompletableFuture<Integer> h3 = m.applyToEither(g, f, rs[3]);
2247  
2248 <        f = new CompletableFuture<>();
2249 <        g = new CompletableFuture<>();
2250 <        f.complete(3);
2251 <        g.complete(1);
2252 <        h = f.thenAcceptBothAsync(g, r = new FailingBiConsumer(), e);
2253 <        checkCompletedWithWrappedCFException(h);
2248 >        // unspecified behavior - both source completions available
2249 >        try {
2250 >            assertEquals(inc(v1), h0.join());
2251 >            rs[0].assertValue(inc(v1));
2252 >        } catch (CompletionException ok) {
2253 >            checkCompletedWithWrappedCancellationException(h0);
2254 >            rs[0].assertNotInvoked();
2255 >        }
2256 >        try {
2257 >            assertEquals(inc(v1), h1.join());
2258 >            rs[1].assertValue(inc(v1));
2259 >        } catch (CompletionException ok) {
2260 >            checkCompletedWithWrappedCancellationException(h1);
2261 >            rs[1].assertNotInvoked();
2262 >        }
2263 >        try {
2264 >            assertEquals(inc(v1), h2.join());
2265 >            rs[2].assertValue(inc(v1));
2266 >        } catch (CompletionException ok) {
2267 >            checkCompletedWithWrappedCancellationException(h2);
2268 >            rs[2].assertNotInvoked();
2269 >        }
2270 >        try {
2271 >            assertEquals(inc(v1), h3.join());
2272 >            rs[3].assertValue(inc(v1));
2273 >        } catch (CompletionException ok) {
2274 >            checkCompletedWithWrappedCancellationException(h3);
2275 >            rs[3].assertNotInvoked();
2276 >        }
2277  
2278 <        assertEquals(2, e.count.get());
2279 <    }
2278 >        checkCompletedNormally(f, v1);
2279 >        checkCancelled(g);
2280 >    }}
2281  
2282      /**
2283 <     * thenAcceptBothAsync result completes exceptionally if either source cancelled
2283 >     * applyToEither result completes exceptionally if action does
2284       */
2285 <    public void testThenAcceptBothAsync4E() {
2286 <        CompletableFuture<Integer> f, g;
2287 <        CompletableFuture<Void> h;
2288 <        SubtractAction r;
2289 <        ThreadExecutor e = new ThreadExecutor();
2290 <
2291 <        f = new CompletableFuture<>();
2292 <        g = new CompletableFuture<>();
2293 <        h = f.thenAcceptBothAsync(g, r = new SubtractAction(), e);
2294 <        assertTrue(f.cancel(true));
2295 <        checkIncomplete(h);
2296 <        g.complete(1);
2297 <        checkCompletedWithWrappedCancellationException(h);
2298 <
2299 <        f = new CompletableFuture<>();
2300 <        g = new CompletableFuture<>();
2301 <        h = f.thenAcceptBothAsync(g, r = new SubtractAction(), e);
2302 <        assertTrue(g.cancel(true));
2303 <        checkIncomplete(h);
2304 <        f.complete(3);
2305 <        checkCompletedWithWrappedCancellationException(h);
2306 <
2307 <        f = new CompletableFuture<>();
2308 <        g = new CompletableFuture<>();
2309 <        f.complete(3);
2310 <        assertTrue(g.cancel(true));
2311 <        h = f.thenAcceptBothAsync(g, r = new SubtractAction(), e);
2312 <        checkCompletedWithWrappedCancellationException(h);
2313 <
2314 <        f = new CompletableFuture<>();
2315 <        g = new CompletableFuture<>();
2316 <        assertTrue(f.cancel(true));
2317 <        g.complete(3);
2318 <        h = f.thenAcceptBothAsync(g, r = new SubtractAction(), e);
2319 <        checkCompletedWithWrappedCancellationException(h);
2320 <
2321 <        assertEquals(0, e.count.get());
2512 <    }
2285 >    public void testApplyToEither_actionFailed() {
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[] rs = new FailingFunction[6];
2293 >        for (int i = 0; i < rs.length; i++) rs[i] = new FailingFunction(m);
2294 >
2295 >        final CompletableFuture<Integer> h0 = m.applyToEither(f, g, rs[0]);
2296 >        final CompletableFuture<Integer> h1 = m.applyToEither(g, f, rs[1]);
2297 >        f.complete(v1);
2298 >        final CompletableFuture<Integer> h2 = m.applyToEither(f, g, rs[2]);
2299 >        final CompletableFuture<Integer> h3 = m.applyToEither(g, f, rs[3]);
2300 >        checkCompletedWithWrappedCFException(h0);
2301 >        checkCompletedWithWrappedCFException(h1);
2302 >        checkCompletedWithWrappedCFException(h2);
2303 >        checkCompletedWithWrappedCFException(h3);
2304 >        for (int i = 0; i < 4; i++) rs[i].assertValue(v1);
2305 >
2306 >        g.complete(v2);
2307 >
2308 >        // unspecified behavior - both source completions available
2309 >        final CompletableFuture<Integer> h4 = m.applyToEither(f, g, rs[4]);
2310 >        final CompletableFuture<Integer> h5 = m.applyToEither(g, f, rs[5]);
2311 >
2312 >        checkCompletedWithWrappedCFException(h4);
2313 >        assertTrue(Objects.equals(v1, rs[4].value) ||
2314 >                   Objects.equals(v2, rs[4].value));
2315 >        checkCompletedWithWrappedCFException(h5);
2316 >        assertTrue(Objects.equals(v1, rs[5].value) ||
2317 >                   Objects.equals(v2, rs[5].value));
2318 >
2319 >        checkCompletedNormally(f, v1);
2320 >        checkCompletedNormally(g, v2);
2321 >    }}
2322  
2323      /**
2324 <     * runAfterBothAsync result completes normally after normal
2325 <     * completion of sources
2324 >     * acceptEither result completes normally after normal completion
2325 >     * of either source
2326       */
2327 <    public void testRunAfterBothAsyncE() {
2328 <        CompletableFuture<Integer> f = new CompletableFuture<>();
2329 <        CompletableFuture<Integer> f2 = new CompletableFuture<>();
2330 <        Noop r = new Noop();
2331 <        CompletableFuture<Void> g = f.runAfterBothAsync(f2, r, new ThreadExecutor());
2332 <        f.complete(one);
2333 <        checkIncomplete(g);
2334 <        f2.complete(two);
2335 <        checkCompletedNormally(g, null);
2336 <        assertTrue(r.ran);
2337 <    }
2327 >    public void testAcceptEither_normalCompletion() {
2328 >        for (ExecutionMode m : ExecutionMode.values())
2329 >        for (Integer v1 : new Integer[] { 1, null })
2330 >        for (Integer v2 : new Integer[] { 2, null })
2331 >    {
2332 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
2333 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
2334 >        final NoopConsumer[] rs = new NoopConsumer[6];
2335 >        for (int i = 0; i < rs.length; i++) rs[i] = new NoopConsumer(m);
2336 >
2337 >        final CompletableFuture<Void> h0 = m.acceptEither(f, g, rs[0]);
2338 >        final CompletableFuture<Void> h1 = m.acceptEither(g, f, rs[1]);
2339 >        checkIncomplete(h0);
2340 >        checkIncomplete(h1);
2341 >        rs[0].assertNotInvoked();
2342 >        rs[1].assertNotInvoked();
2343 >        f.complete(v1);
2344 >        checkCompletedNormally(h0, null);
2345 >        checkCompletedNormally(h1, null);
2346 >        rs[0].assertValue(v1);
2347 >        rs[1].assertValue(v1);
2348 >        final CompletableFuture<Void> h2 = m.acceptEither(f, g, rs[2]);
2349 >        final CompletableFuture<Void> h3 = m.acceptEither(g, f, rs[3]);
2350 >        checkCompletedNormally(h2, null);
2351 >        checkCompletedNormally(h3, null);
2352 >        rs[2].assertValue(v1);
2353 >        rs[3].assertValue(v1);
2354 >        g.complete(v2);
2355 >
2356 >        // unspecified behavior - both source completions available
2357 >        final CompletableFuture<Void> h4 = m.acceptEither(f, g, rs[4]);
2358 >        final CompletableFuture<Void> h5 = m.acceptEither(g, f, rs[5]);
2359 >        checkCompletedNormally(h4, null);
2360 >        checkCompletedNormally(h5, null);
2361 >        assertTrue(Objects.equals(v1, rs[4].value) ||
2362 >                   Objects.equals(v2, rs[4].value));
2363 >        assertTrue(Objects.equals(v1, rs[5].value) ||
2364 >                   Objects.equals(v2, rs[5].value));
2365 >
2366 >        checkCompletedNormally(f, v1);
2367 >        checkCompletedNormally(g, v2);
2368 >        checkCompletedNormally(h0, null);
2369 >        checkCompletedNormally(h1, null);
2370 >        checkCompletedNormally(h2, null);
2371 >        checkCompletedNormally(h3, null);
2372 >        for (int i = 0; i < 4; i++) rs[i].assertValue(v1);
2373 >    }}
2374  
2375      /**
2376 <     * runAfterBothAsync result completes exceptionally after exceptional
2377 <     * completion of source
2376 >     * acceptEither result completes exceptionally after exceptional
2377 >     * completion of either source
2378       */
2379 <    public void testRunAfterBothAsync2E() {
2380 <        CompletableFuture<Integer> f = new CompletableFuture<>();
2381 <        CompletableFuture<Integer> f2 = new CompletableFuture<>();
2382 <        Noop r = new Noop();
2383 <        CompletableFuture<Void> g = f.runAfterBothAsync(f2, r, new ThreadExecutor());
2384 <        f.completeExceptionally(new CFException());
2385 <        f2.complete(two);
2386 <        checkCompletedWithWrappedCFException(g);
2387 <
2388 <        r = new Noop();
2389 <        f = new CompletableFuture<>();
2390 <        f2 = new CompletableFuture<>();
2391 <        g = f.runAfterBothAsync(f2, r, new ThreadExecutor());
2392 <        f.complete(one);
2393 <        f2.completeExceptionally(new CFException());
2394 <        checkCompletedWithWrappedCFException(g);
2395 <    }
2379 >    public void testAcceptEither_exceptionalCompletion() {
2380 >        for (ExecutionMode m : ExecutionMode.values())
2381 >        for (Integer v1 : new Integer[] { 1, null })
2382 >    {
2383 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
2384 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
2385 >        final CFException ex = new CFException();
2386 >        final NoopConsumer[] rs = new NoopConsumer[6];
2387 >        for (int i = 0; i < rs.length; i++) rs[i] = new NoopConsumer(m);
2388 >
2389 >        final CompletableFuture<Void> h0 = m.acceptEither(f, g, rs[0]);
2390 >        final CompletableFuture<Void> h1 = m.acceptEither(g, f, rs[1]);
2391 >        checkIncomplete(h0);
2392 >        checkIncomplete(h1);
2393 >        rs[0].assertNotInvoked();
2394 >        rs[1].assertNotInvoked();
2395 >        f.completeExceptionally(ex);
2396 >        checkCompletedWithWrappedException(h0, ex);
2397 >        checkCompletedWithWrappedException(h1, ex);
2398 >        final CompletableFuture<Void> h2 = m.acceptEither(f, g, rs[2]);
2399 >        final CompletableFuture<Void> h3 = m.acceptEither(g, f, rs[3]);
2400 >        checkCompletedWithWrappedException(h2, ex);
2401 >        checkCompletedWithWrappedException(h3, ex);
2402 >
2403 >        g.complete(v1);
2404 >
2405 >        // unspecified behavior - both source completions available
2406 >        final CompletableFuture<Void> h4 = m.acceptEither(f, g, rs[4]);
2407 >        final CompletableFuture<Void> h5 = m.acceptEither(g, f, rs[5]);
2408 >        try {
2409 >            assertNull(h4.join());
2410 >            rs[4].assertValue(v1);
2411 >        } catch (CompletionException ok) {
2412 >            checkCompletedWithWrappedException(h4, ex);
2413 >            rs[4].assertNotInvoked();
2414 >        }
2415 >        try {
2416 >            assertNull(h5.join());
2417 >            rs[5].assertValue(v1);
2418 >        } catch (CompletionException ok) {
2419 >            checkCompletedWithWrappedException(h5, ex);
2420 >            rs[5].assertNotInvoked();
2421 >        }
2422  
2423 <    /**
2424 <     * runAfterBothAsync result completes exceptionally if action does
2425 <     */
2426 <    public void testRunAfterBothAsync3E() {
2427 <        CompletableFuture<Integer> f = new CompletableFuture<>();
2428 <        CompletableFuture<Integer> f2 = new CompletableFuture<>();
2429 <        FailingNoop r = new FailingNoop();
2430 <        CompletableFuture<Void> g = f.runAfterBothAsync(f2, r, new ThreadExecutor());
2431 <        f.complete(one);
2432 <        checkIncomplete(g);
2433 <        f2.complete(two);
2434 <        checkCompletedWithWrappedCFException(g);
2435 <    }
2423 >        checkCompletedExceptionally(f, ex);
2424 >        checkCompletedNormally(g, v1);
2425 >        checkCompletedWithWrappedException(h0, ex);
2426 >        checkCompletedWithWrappedException(h1, ex);
2427 >        checkCompletedWithWrappedException(h2, ex);
2428 >        checkCompletedWithWrappedException(h3, ex);
2429 >        checkCompletedWithWrappedException(h4, ex);
2430 >        for (int i = 0; i < 4; i++) rs[i].assertNotInvoked();
2431 >    }}
2432 >
2433 >    public void testAcceptEither_exceptionalCompletion2() {
2434 >        for (ExecutionMode m : ExecutionMode.values())
2435 >        for (boolean fFirst : new boolean[] { true, false })
2436 >        for (Integer v1 : new Integer[] { 1, null })
2437 >    {
2438 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
2439 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
2440 >        final CFException ex = new CFException();
2441 >        final NoopConsumer[] rs = new NoopConsumer[6];
2442 >        for (int i = 0; i < rs.length; i++) rs[i] = new NoopConsumer(m);
2443 >
2444 >        final CompletableFuture<Void> h0 = m.acceptEither(f, g, rs[0]);
2445 >        final CompletableFuture<Void> h1 = m.acceptEither(g, f, rs[1]);
2446 >        assertTrue(fFirst ? f.complete(v1) : g.completeExceptionally(ex));
2447 >        assertTrue(!fFirst ? f.complete(v1) : g.completeExceptionally(ex));
2448 >        final CompletableFuture<Void> h2 = m.acceptEither(f, g, rs[2]);
2449 >        final CompletableFuture<Void> h3 = m.acceptEither(g, f, rs[3]);
2450  
2451 <    /**
2452 <     * runAfterBothAsync result completes exceptionally if either source cancelled
2453 <     */
2454 <    public void testRunAfterBothAsync4E() {
2455 <        CompletableFuture<Integer> f = new CompletableFuture<>();
2456 <        CompletableFuture<Integer> f2 = new CompletableFuture<>();
2457 <        Noop r = new Noop();
2458 <        CompletableFuture<Void> g = f.runAfterBothAsync(f2, r, new ThreadExecutor());
2459 <        assertTrue(f.cancel(true));
2460 <        f2.complete(two);
2461 <        checkCompletedWithWrappedCancellationException(g);
2451 >        // unspecified behavior - both source completions available
2452 >        try {
2453 >            assertEquals(null, h0.join());
2454 >            rs[0].assertValue(v1);
2455 >        } catch (CompletionException ok) {
2456 >            checkCompletedWithWrappedException(h0, ex);
2457 >            rs[0].assertNotInvoked();
2458 >        }
2459 >        try {
2460 >            assertEquals(null, h1.join());
2461 >            rs[1].assertValue(v1);
2462 >        } catch (CompletionException ok) {
2463 >            checkCompletedWithWrappedException(h1, ex);
2464 >            rs[1].assertNotInvoked();
2465 >        }
2466 >        try {
2467 >            assertEquals(null, h2.join());
2468 >            rs[2].assertValue(v1);
2469 >        } catch (CompletionException ok) {
2470 >            checkCompletedWithWrappedException(h2, ex);
2471 >            rs[2].assertNotInvoked();
2472 >        }
2473 >        try {
2474 >            assertEquals(null, h3.join());
2475 >            rs[3].assertValue(v1);
2476 >        } catch (CompletionException ok) {
2477 >            checkCompletedWithWrappedException(h3, ex);
2478 >            rs[3].assertNotInvoked();
2479 >        }
2480  
2481 <        r = new Noop();
2482 <        f = new CompletableFuture<>();
2483 <        f2 = new CompletableFuture<>();
2581 <        g = f.runAfterBothAsync(f2, r, new ThreadExecutor());
2582 <        f.complete(one);
2583 <        assertTrue(f2.cancel(true));
2584 <        checkCompletedWithWrappedCancellationException(g);
2585 <    }
2481 >        checkCompletedNormally(f, v1);
2482 >        checkCompletedExceptionally(g, ex);
2483 >    }}
2484  
2485      /**
2486 <     * applyToEitherAsync result completes normally after normal
2589 <     * completion of sources
2486 >     * acceptEither result completes exceptionally if either source cancelled
2487       */
2488 <    public void testApplyToEitherAsyncE() {
2489 <        CompletableFuture<Integer> f = new CompletableFuture<>();
2490 <        CompletableFuture<Integer> f2 = new CompletableFuture<>();
2491 <        CompletableFuture<Integer> g = f.applyToEitherAsync(f2, inc, new ThreadExecutor());
2492 <        f.complete(one);
2493 <        checkCompletedNormally(g, two);
2488 >    public void testAcceptEither_sourceCancelled() {
2489 >        for (ExecutionMode m : ExecutionMode.values())
2490 >        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2491 >        for (Integer v1 : new Integer[] { 1, null })
2492 >    {
2493 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
2494 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
2495 >        final NoopConsumer[] rs = new NoopConsumer[6];
2496 >        for (int i = 0; i < rs.length; i++) rs[i] = new NoopConsumer(m);
2497 >
2498 >        final CompletableFuture<Void> h0 = m.acceptEither(f, g, rs[0]);
2499 >        final CompletableFuture<Void> h1 = m.acceptEither(g, f, rs[1]);
2500 >        checkIncomplete(h0);
2501 >        checkIncomplete(h1);
2502 >        rs[0].assertNotInvoked();
2503 >        rs[1].assertNotInvoked();
2504 >        f.cancel(mayInterruptIfRunning);
2505 >        checkCompletedWithWrappedCancellationException(h0);
2506 >        checkCompletedWithWrappedCancellationException(h1);
2507 >        final CompletableFuture<Void> h2 = m.acceptEither(f, g, rs[2]);
2508 >        final CompletableFuture<Void> h3 = m.acceptEither(g, f, rs[3]);
2509 >        checkCompletedWithWrappedCancellationException(h2);
2510 >        checkCompletedWithWrappedCancellationException(h3);
2511 >
2512 >        g.complete(v1);
2513 >
2514 >        // unspecified behavior - both source completions available
2515 >        final CompletableFuture<Void> h4 = m.acceptEither(f, g, rs[4]);
2516 >        final CompletableFuture<Void> h5 = m.acceptEither(g, f, rs[5]);
2517 >        try {
2518 >            assertNull(h4.join());
2519 >            rs[4].assertValue(v1);
2520 >        } catch (CompletionException ok) {
2521 >            checkCompletedWithWrappedCancellationException(h4);
2522 >            rs[4].assertNotInvoked();
2523 >        }
2524 >        try {
2525 >            assertNull(h5.join());
2526 >            rs[5].assertValue(v1);
2527 >        } catch (CompletionException ok) {
2528 >            checkCompletedWithWrappedCancellationException(h5);
2529 >            rs[5].assertNotInvoked();
2530 >        }
2531  
2532 <        f = new CompletableFuture<>();
2533 <        f.complete(one);
2534 <        f2 = new CompletableFuture<>();
2535 <        g = f.applyToEitherAsync(f2, inc, new ThreadExecutor());
2536 <        checkCompletedNormally(g, two);
2537 <    }
2532 >        checkCancelled(f);
2533 >        checkCompletedNormally(g, v1);
2534 >        checkCompletedWithWrappedCancellationException(h0);
2535 >        checkCompletedWithWrappedCancellationException(h1);
2536 >        checkCompletedWithWrappedCancellationException(h2);
2537 >        checkCompletedWithWrappedCancellationException(h3);
2538 >        for (int i = 0; i < 4; i++) rs[i].assertNotInvoked();
2539 >    }}
2540  
2541      /**
2542 <     * applyToEitherAsync result completes exceptionally after exceptional
2607 <     * completion of source
2542 >     * acceptEither result completes exceptionally if action does
2543       */
2544 <    public void testApplyToEitherAsync2E() {
2545 <        CompletableFuture<Integer> f = new CompletableFuture<>();
2546 <        CompletableFuture<Integer> f2 = new CompletableFuture<>();
2547 <        CompletableFuture<Integer> g = f.applyToEitherAsync(f2, inc, new ThreadExecutor());
2548 <        f.completeExceptionally(new CFException());
2549 <        checkCompletedWithWrappedCFException(g);
2550 <
2551 <        f = new CompletableFuture<>();
2552 <        f2 = new CompletableFuture<>();
2553 <        f2.completeExceptionally(new CFException());
2554 <        g = f.applyToEitherAsync(f2, inc, new ThreadExecutor());
2555 <        f.complete(one);
2556 <        checkCompletedWithWrappedCFException(g);
2557 <    }
2544 >    public void testAcceptEither_actionFailed() {
2545 >        for (ExecutionMode m : ExecutionMode.values())
2546 >        for (Integer v1 : new Integer[] { 1, null })
2547 >        for (Integer v2 : new Integer[] { 2, null })
2548 >    {
2549 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
2550 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
2551 >        final FailingConsumer[] rs = new FailingConsumer[6];
2552 >        for (int i = 0; i < rs.length; i++) rs[i] = new FailingConsumer(m);
2553 >
2554 >        final CompletableFuture<Void> h0 = m.acceptEither(f, g, rs[0]);
2555 >        final CompletableFuture<Void> h1 = m.acceptEither(g, f, rs[1]);
2556 >        f.complete(v1);
2557 >        final CompletableFuture<Void> h2 = m.acceptEither(f, g, rs[2]);
2558 >        final CompletableFuture<Void> h3 = m.acceptEither(g, f, rs[3]);
2559 >        checkCompletedWithWrappedCFException(h0);
2560 >        checkCompletedWithWrappedCFException(h1);
2561 >        checkCompletedWithWrappedCFException(h2);
2562 >        checkCompletedWithWrappedCFException(h3);
2563 >        for (int i = 0; i < 4; i++) rs[i].assertValue(v1);
2564 >
2565 >        g.complete(v2);
2566 >
2567 >        // unspecified behavior - both source completions available
2568 >        final CompletableFuture<Void> h4 = m.acceptEither(f, g, rs[4]);
2569 >        final CompletableFuture<Void> h5 = m.acceptEither(g, f, rs[5]);
2570 >
2571 >        checkCompletedWithWrappedCFException(h4);
2572 >        assertTrue(Objects.equals(v1, rs[4].value) ||
2573 >                   Objects.equals(v2, rs[4].value));
2574 >        checkCompletedWithWrappedCFException(h5);
2575 >        assertTrue(Objects.equals(v1, rs[5].value) ||
2576 >                   Objects.equals(v2, rs[5].value));
2577 >
2578 >        checkCompletedNormally(f, v1);
2579 >        checkCompletedNormally(g, v2);
2580 >    }}
2581  
2582      /**
2583 <     * applyToEitherAsync result completes exceptionally if action does
2583 >     * runAfterEither result completes normally after normal completion
2584 >     * of either source
2585       */
2586 <    public void testApplyToEitherAsync3E() {
2587 <        CompletableFuture<Integer> f = new CompletableFuture<>();
2588 <        CompletableFuture<Integer> f2 = new CompletableFuture<>();
2589 <        FailingFunction r = new FailingFunction();
2590 <        CompletableFuture<Integer> g = f.applyToEitherAsync(f2, r, new ThreadExecutor());
2591 <        f.complete(one);
2592 <        checkCompletedWithWrappedCFException(g);
2593 <    }
2586 >    public void testRunAfterEither_normalCompletion() {
2587 >        for (ExecutionMode m : ExecutionMode.values())
2588 >        for (Integer v1 : new Integer[] { 1, null })
2589 >        for (Integer v2 : new Integer[] { 2, null })
2590 >    {
2591 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
2592 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
2593 >        final Noop[] rs = new Noop[6];
2594 >        for (int i = 0; i < rs.length; i++) rs[i] = new Noop(m);
2595 >
2596 >        final CompletableFuture<Void> h0 = m.runAfterEither(f, g, rs[0]);
2597 >        final CompletableFuture<Void> h1 = m.runAfterEither(g, f, rs[1]);
2598 >        checkIncomplete(h0);
2599 >        checkIncomplete(h1);
2600 >        rs[0].assertNotInvoked();
2601 >        rs[1].assertNotInvoked();
2602 >        f.complete(v1);
2603 >        checkCompletedNormally(h0, null);
2604 >        checkCompletedNormally(h1, null);
2605 >        rs[0].assertInvoked();
2606 >        rs[1].assertInvoked();
2607 >        final CompletableFuture<Void> h2 = m.runAfterEither(f, g, rs[2]);
2608 >        final CompletableFuture<Void> h3 = m.runAfterEither(g, f, rs[3]);
2609 >        checkCompletedNormally(h2, null);
2610 >        checkCompletedNormally(h3, null);
2611 >        rs[2].assertInvoked();
2612 >        rs[3].assertInvoked();
2613 >
2614 >        g.complete(v2);
2615 >
2616 >        final CompletableFuture<Void> h4 = m.runAfterEither(f, g, rs[4]);
2617 >        final CompletableFuture<Void> h5 = m.runAfterEither(g, f, rs[5]);
2618 >
2619 >        checkCompletedNormally(f, v1);
2620 >        checkCompletedNormally(g, v2);
2621 >        checkCompletedNormally(h0, null);
2622 >        checkCompletedNormally(h1, null);
2623 >        checkCompletedNormally(h2, null);
2624 >        checkCompletedNormally(h3, null);
2625 >        checkCompletedNormally(h4, null);
2626 >        checkCompletedNormally(h5, null);
2627 >        for (int i = 0; i < 6; i++) rs[i].assertInvoked();
2628 >    }}
2629  
2630      /**
2631 <     * applyToEitherAsync result completes exceptionally if either source cancelled
2631 >     * runAfterEither result completes exceptionally after exceptional
2632 >     * completion of either source
2633       */
2634 <    public void testApplyToEitherAsync4E() {
2635 <        CompletableFuture<Integer> f = new CompletableFuture<>();
2636 <        CompletableFuture<Integer> f2 = new CompletableFuture<>();
2637 <        CompletableFuture<Integer> g = f.applyToEitherAsync(f2, inc, new ThreadExecutor());
2638 <        assertTrue(f.cancel(true));
2639 <        checkCompletedWithWrappedCancellationException(g);
2634 >    public void testRunAfterEither_exceptionalCompletion() {
2635 >        for (ExecutionMode m : ExecutionMode.values())
2636 >        for (Integer v1 : new Integer[] { 1, null })
2637 >    {
2638 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
2639 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
2640 >        final CFException ex = new CFException();
2641 >        final Noop[] rs = new Noop[6];
2642 >        for (int i = 0; i < rs.length; i++) rs[i] = new Noop(m);
2643 >
2644 >        final CompletableFuture<Void> h0 = m.runAfterEither(f, g, rs[0]);
2645 >        final CompletableFuture<Void> h1 = m.runAfterEither(g, f, rs[1]);
2646 >        checkIncomplete(h0);
2647 >        checkIncomplete(h1);
2648 >        rs[0].assertNotInvoked();
2649 >        rs[1].assertNotInvoked();
2650 >        assertTrue(f.completeExceptionally(ex));
2651 >        checkCompletedWithWrappedException(h0, ex);
2652 >        checkCompletedWithWrappedException(h1, ex);
2653 >        final CompletableFuture<Void> h2 = m.runAfterEither(f, g, rs[2]);
2654 >        final CompletableFuture<Void> h3 = m.runAfterEither(g, f, rs[3]);
2655 >        checkCompletedWithWrappedException(h2, ex);
2656 >        checkCompletedWithWrappedException(h3, ex);
2657 >
2658 >        assertTrue(g.complete(v1));
2659 >
2660 >        // unspecified behavior - both source completions available
2661 >        final CompletableFuture<Void> h4 = m.runAfterEither(f, g, rs[4]);
2662 >        final CompletableFuture<Void> h5 = m.runAfterEither(g, f, rs[5]);
2663 >        try {
2664 >            assertNull(h4.join());
2665 >            rs[4].assertInvoked();
2666 >        } catch (CompletionException ok) {
2667 >            checkCompletedWithWrappedException(h4, ex);
2668 >            rs[4].assertNotInvoked();
2669 >        }
2670 >        try {
2671 >            assertNull(h5.join());
2672 >            rs[5].assertInvoked();
2673 >        } catch (CompletionException ok) {
2674 >            checkCompletedWithWrappedException(h5, ex);
2675 >            rs[5].assertNotInvoked();
2676 >        }
2677  
2678 <        f = new CompletableFuture<>();
2679 <        f2 = new CompletableFuture<>();
2680 <        assertTrue(f2.cancel(true));
2681 <        g = f.applyToEitherAsync(f2, inc, new ThreadExecutor());
2682 <        checkCompletedWithWrappedCancellationException(g);
2683 <    }
2678 >        checkCompletedExceptionally(f, ex);
2679 >        checkCompletedNormally(g, v1);
2680 >        checkCompletedWithWrappedException(h0, ex);
2681 >        checkCompletedWithWrappedException(h1, ex);
2682 >        checkCompletedWithWrappedException(h2, ex);
2683 >        checkCompletedWithWrappedException(h3, ex);
2684 >        checkCompletedWithWrappedException(h4, ex);
2685 >        for (int i = 0; i < 4; i++) rs[i].assertNotInvoked();
2686 >    }}
2687 >
2688 >    public void testRunAfterEither_exceptionalCompletion2() {
2689 >        for (ExecutionMode m : ExecutionMode.values())
2690 >        for (boolean fFirst : new boolean[] { true, false })
2691 >        for (Integer v1 : new Integer[] { 1, null })
2692 >    {
2693 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
2694 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
2695 >        final CFException ex = new CFException();
2696 >        final Noop[] rs = new Noop[6];
2697 >        for (int i = 0; i < rs.length; i++) rs[i] = new Noop(m);
2698 >
2699 >        final CompletableFuture<Void> h0 = m.runAfterEither(f, g, rs[0]);
2700 >        final CompletableFuture<Void> h1 = m.runAfterEither(g, f, rs[1]);
2701 >        assertTrue( fFirst ? f.complete(v1) : g.completeExceptionally(ex));
2702 >        assertTrue(!fFirst ? f.complete(v1) : g.completeExceptionally(ex));
2703 >        final CompletableFuture<Void> h2 = m.runAfterEither(f, g, rs[2]);
2704 >        final CompletableFuture<Void> h3 = m.runAfterEither(g, f, rs[3]);
2705  
2706 <    /**
2707 <     * acceptEitherAsync result completes normally after normal
2708 <     * completion of sources
2709 <     */
2710 <    public void testAcceptEitherAsyncE() {
2711 <        CompletableFuture<Integer> f = new CompletableFuture<>();
2712 <        CompletableFuture<Integer> f2 = new CompletableFuture<>();
2713 <        IncAction r = new IncAction();
2714 <        CompletableFuture<Void> g = f.acceptEitherAsync(f2, r, new ThreadExecutor());
2715 <        f.complete(one);
2716 <        checkCompletedNormally(g, null);
2717 <        assertEquals(r.value, 2);
2706 >        // unspecified behavior - both source completions available
2707 >        try {
2708 >            assertEquals(null, h0.join());
2709 >            rs[0].assertInvoked();
2710 >        } catch (CompletionException ok) {
2711 >            checkCompletedWithWrappedException(h0, ex);
2712 >            rs[0].assertNotInvoked();
2713 >        }
2714 >        try {
2715 >            assertEquals(null, h1.join());
2716 >            rs[1].assertInvoked();
2717 >        } catch (CompletionException ok) {
2718 >            checkCompletedWithWrappedException(h1, ex);
2719 >            rs[1].assertNotInvoked();
2720 >        }
2721 >        try {
2722 >            assertEquals(null, h2.join());
2723 >            rs[2].assertInvoked();
2724 >        } catch (CompletionException ok) {
2725 >            checkCompletedWithWrappedException(h2, ex);
2726 >            rs[2].assertNotInvoked();
2727 >        }
2728 >        try {
2729 >            assertEquals(null, h3.join());
2730 >            rs[3].assertInvoked();
2731 >        } catch (CompletionException ok) {
2732 >            checkCompletedWithWrappedException(h3, ex);
2733 >            rs[3].assertNotInvoked();
2734 >        }
2735  
2736 <        r = new IncAction();
2737 <        f = new CompletableFuture<>();
2738 <        f.complete(one);
2669 <        f2 = new CompletableFuture<>();
2670 <        g = f.acceptEitherAsync(f2, r, new ThreadExecutor());
2671 <        checkCompletedNormally(g, null);
2672 <        assertEquals(r.value, 2);
2673 <    }
2736 >        checkCompletedNormally(f, v1);
2737 >        checkCompletedExceptionally(g, ex);
2738 >    }}
2739  
2740      /**
2741 <     * acceptEitherAsync result completes exceptionally after exceptional
2677 <     * completion of source
2741 >     * runAfterEither result completes exceptionally if either source cancelled
2742       */
2743 <    public void testAcceptEitherAsync2E() {
2744 <        CompletableFuture<Integer> f = new CompletableFuture<>();
2745 <        CompletableFuture<Integer> f2 = new CompletableFuture<>();
2746 <        IncAction r = new IncAction();
2747 <        CompletableFuture<Void> g = f.acceptEitherAsync(f2, r, new ThreadExecutor());
2748 <        f.completeExceptionally(new CFException());
2749 <        checkCompletedWithWrappedCFException(g);
2750 <
2751 <        r = new IncAction();
2752 <        f = new CompletableFuture<>();
2753 <        f2 = new CompletableFuture<>();
2754 <        f2.completeExceptionally(new CFException());
2755 <        g = f.acceptEitherAsync(f2, r, new ThreadExecutor());
2756 <        f.complete(one);
2757 <        checkCompletedWithWrappedCFException(g);
2758 <    }
2743 >    public void testRunAfterEither_sourceCancelled() {
2744 >        for (ExecutionMode m : ExecutionMode.values())
2745 >        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2746 >        for (Integer v1 : new Integer[] { 1, null })
2747 >    {
2748 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
2749 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
2750 >        final Noop[] rs = new Noop[6];
2751 >        for (int i = 0; i < rs.length; i++) rs[i] = new Noop(m);
2752 >
2753 >        final CompletableFuture<Void> h0 = m.runAfterEither(f, g, rs[0]);
2754 >        final CompletableFuture<Void> h1 = m.runAfterEither(g, f, rs[1]);
2755 >        checkIncomplete(h0);
2756 >        checkIncomplete(h1);
2757 >        rs[0].assertNotInvoked();
2758 >        rs[1].assertNotInvoked();
2759 >        f.cancel(mayInterruptIfRunning);
2760 >        checkCompletedWithWrappedCancellationException(h0);
2761 >        checkCompletedWithWrappedCancellationException(h1);
2762 >        final CompletableFuture<Void> h2 = m.runAfterEither(f, g, rs[2]);
2763 >        final CompletableFuture<Void> h3 = m.runAfterEither(g, f, rs[3]);
2764 >        checkCompletedWithWrappedCancellationException(h2);
2765 >        checkCompletedWithWrappedCancellationException(h3);
2766 >
2767 >        assertTrue(g.complete(v1));
2768 >
2769 >        // unspecified behavior - both source completions available
2770 >        final CompletableFuture<Void> h4 = m.runAfterEither(f, g, rs[4]);
2771 >        final CompletableFuture<Void> h5 = m.runAfterEither(g, f, rs[5]);
2772 >        try {
2773 >            assertNull(h4.join());
2774 >            rs[4].assertInvoked();
2775 >        } catch (CompletionException ok) {
2776 >            checkCompletedWithWrappedCancellationException(h4);
2777 >            rs[4].assertNotInvoked();
2778 >        }
2779 >        try {
2780 >            assertNull(h5.join());
2781 >            rs[5].assertInvoked();
2782 >        } catch (CompletionException ok) {
2783 >            checkCompletedWithWrappedCancellationException(h5);
2784 >            rs[5].assertNotInvoked();
2785 >        }
2786  
2787 <    /**
2788 <     * acceptEitherAsync result completes exceptionally if action does
2789 <     */
2790 <    public void testAcceptEitherAsync3E() {
2791 <        CompletableFuture<Integer> f = new CompletableFuture<>();
2792 <        CompletableFuture<Integer> f2 = new CompletableFuture<>();
2793 <        FailingConsumer r = new FailingConsumer();
2794 <        CompletableFuture<Void> g = f.acceptEitherAsync(f2, r, new ThreadExecutor());
2704 <        f.complete(one);
2705 <        checkCompletedWithWrappedCFException(g);
2706 <    }
2787 >        checkCancelled(f);
2788 >        checkCompletedNormally(g, v1);
2789 >        checkCompletedWithWrappedCancellationException(h0);
2790 >        checkCompletedWithWrappedCancellationException(h1);
2791 >        checkCompletedWithWrappedCancellationException(h2);
2792 >        checkCompletedWithWrappedCancellationException(h3);
2793 >        for (int i = 0; i < 4; i++) rs[i].assertNotInvoked();
2794 >    }}
2795  
2796      /**
2797 <     * acceptEitherAsync result completes exceptionally if either
2710 <     * source cancelled
2797 >     * runAfterEither result completes exceptionally if action does
2798       */
2799 <    public void testAcceptEitherAsync4E() {
2800 <        CompletableFuture<Integer> f = new CompletableFuture<>();
2801 <        CompletableFuture<Integer> f2 = new CompletableFuture<>();
2802 <        IncAction r = new IncAction();
2803 <        CompletableFuture<Void> g = f.acceptEitherAsync(f2, r, new ThreadExecutor());
2804 <        assertTrue(f.cancel(true));
2805 <        checkCompletedWithWrappedCancellationException(g);
2806 <
2807 <        r = new IncAction();
2808 <        f = new CompletableFuture<>();
2809 <        f2 = new CompletableFuture<>();
2810 <        assertTrue(f2.cancel(true));
2811 <        g = f.acceptEitherAsync(f2, r, new ThreadExecutor());
2812 <        checkCompletedWithWrappedCancellationException(g);
2813 <    }
2799 >    public void testRunAfterEither_actionFailed() {
2800 >        for (ExecutionMode m : ExecutionMode.values())
2801 >        for (Integer v1 : new Integer[] { 1, null })
2802 >        for (Integer v2 : new Integer[] { 2, null })
2803 >    {
2804 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
2805 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
2806 >        final FailingRunnable[] rs = new FailingRunnable[6];
2807 >        for (int i = 0; i < rs.length; i++) rs[i] = new FailingRunnable(m);
2808 >
2809 >        final CompletableFuture<Void> h0 = m.runAfterEither(f, g, rs[0]);
2810 >        final CompletableFuture<Void> h1 = m.runAfterEither(g, f, rs[1]);
2811 >        assertTrue(f.complete(v1));
2812 >        final CompletableFuture<Void> h2 = m.runAfterEither(f, g, rs[2]);
2813 >        final CompletableFuture<Void> h3 = m.runAfterEither(g, f, rs[3]);
2814 >        checkCompletedWithWrappedCFException(h0);
2815 >        checkCompletedWithWrappedCFException(h1);
2816 >        checkCompletedWithWrappedCFException(h2);
2817 >        checkCompletedWithWrappedCFException(h3);
2818 >        for (int i = 0; i < 4; i++) rs[i].assertInvoked();
2819 >        assertTrue(g.complete(v2));
2820 >        final CompletableFuture<Void> h4 = m.runAfterEither(f, g, rs[4]);
2821 >        final CompletableFuture<Void> h5 = m.runAfterEither(g, f, rs[5]);
2822 >        checkCompletedWithWrappedCFException(h4);
2823 >        checkCompletedWithWrappedCFException(h5);
2824 >
2825 >        checkCompletedNormally(f, v1);
2826 >        checkCompletedNormally(g, v2);
2827 >        for (int i = 0; i < 6; i++) rs[i].assertInvoked();
2828 >    }}
2829  
2830      /**
2831 <     * runAfterEitherAsync result completes normally after normal
2730 <     * completion of sources
2831 >     * thenCompose result completes normally after normal completion of source
2832       */
2833 <    public void testRunAfterEitherAsyncE() {
2834 <        CompletableFuture<Integer> f = new CompletableFuture<>();
2835 <        CompletableFuture<Integer> f2 = new CompletableFuture<>();
2836 <        Noop r = new Noop();
2837 <        CompletableFuture<Void> g = f.runAfterEitherAsync(f2, r, new ThreadExecutor());
2838 <        f.complete(one);
2839 <        checkCompletedNormally(g, null);
2840 <        assertTrue(r.ran);
2841 <
2842 <        r = new Noop();
2843 <        f = new CompletableFuture<>();
2844 <        f.complete(one);
2845 <        f2 = new CompletableFuture<>();
2846 <        g = f.runAfterEitherAsync(f2, r, new ThreadExecutor());
2847 <        checkCompletedNormally(g, null);
2747 <        assertTrue(r.ran);
2748 <    }
2833 >    public void testThenCompose_normalCompletion() {
2834 >        for (ExecutionMode m : ExecutionMode.values())
2835 >        for (boolean createIncomplete : new boolean[] { true, false })
2836 >        for (Integer v1 : new Integer[] { 1, null })
2837 >    {
2838 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
2839 >        final CompletableFutureInc r = new CompletableFutureInc(m);
2840 >        if (!createIncomplete) assertTrue(f.complete(v1));
2841 >        final CompletableFuture<Integer> g = m.thenCompose(f, r);
2842 >        if (createIncomplete) assertTrue(f.complete(v1));
2843 >
2844 >        checkCompletedNormally(g, inc(v1));
2845 >        checkCompletedNormally(f, v1);
2846 >        r.assertValue(v1);
2847 >    }}
2848  
2849      /**
2850 <     * runAfterEitherAsync result completes exceptionally after exceptional
2850 >     * thenCompose result completes exceptionally after exceptional
2851       * completion of source
2852       */
2853 <    public void testRunAfterEitherAsync2E() {
2854 <        CompletableFuture<Integer> f = new CompletableFuture<>();
2855 <        CompletableFuture<Integer> f2 = new CompletableFuture<>();
2856 <        Noop r = new Noop();
2857 <        CompletableFuture<Void> g = f.runAfterEitherAsync(f2, r, new ThreadExecutor());
2858 <        f.completeExceptionally(new CFException());
2859 <        checkCompletedWithWrappedCFException(g);
2860 <
2861 <        r = new Noop();
2862 <        f = new CompletableFuture<>();
2863 <        f2 = new CompletableFuture<>();
2864 <        f2.completeExceptionally(new CFException());
2865 <        g = f.runAfterEitherAsync(f2, r, new ThreadExecutor());
2866 <        f.complete(one);
2867 <        checkCompletedWithWrappedCFException(g);
2769 <    }
2770 <
2771 <    /**
2772 <     * runAfterEitherAsync result completes exceptionally if action does
2773 <     */
2774 <    public void testRunAfterEitherAsync3E() {
2775 <        CompletableFuture<Integer> f = new CompletableFuture<>();
2776 <        CompletableFuture<Integer> f2 = new CompletableFuture<>();
2777 <        FailingNoop r = new FailingNoop();
2778 <        CompletableFuture<Void> g = f.runAfterEitherAsync(f2, r, new ThreadExecutor());
2779 <        f.complete(one);
2780 <        checkCompletedWithWrappedCFException(g);
2781 <    }
2782 <
2783 <    /**
2784 <     * runAfterEitherAsync result completes exceptionally if either
2785 <     * source cancelled
2786 <     */
2787 <    public void testRunAfterEitherAsync4E() {
2788 <        CompletableFuture<Integer> f = new CompletableFuture<>();
2789 <        CompletableFuture<Integer> f2 = new CompletableFuture<>();
2790 <        Noop r = new Noop();
2791 <        CompletableFuture<Void> g = f.runAfterEitherAsync(f2, r, new ThreadExecutor());
2792 <        assertTrue(f.cancel(true));
2793 <        checkCompletedWithWrappedCancellationException(g);
2794 <
2795 <        r = new Noop();
2796 <        f = new CompletableFuture<>();
2797 <        f2 = new CompletableFuture<>();
2798 <        assertTrue(f2.cancel(true));
2799 <        g = f.runAfterEitherAsync(f2, r, new ThreadExecutor());
2800 <        checkCompletedWithWrappedCancellationException(g);
2801 <    }
2853 >    public void testThenCompose_exceptionalCompletion() {
2854 >        for (ExecutionMode m : ExecutionMode.values())
2855 >        for (boolean createIncomplete : new boolean[] { true, false })
2856 >    {
2857 >        final CFException ex = new CFException();
2858 >        final CompletableFutureInc r = new CompletableFutureInc(m);
2859 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
2860 >        if (!createIncomplete) f.completeExceptionally(ex);
2861 >        final CompletableFuture<Integer> g = m.thenCompose(f, r);
2862 >        if (createIncomplete) f.completeExceptionally(ex);
2863 >
2864 >        checkCompletedWithWrappedException(g, ex);
2865 >        checkCompletedExceptionally(f, ex);
2866 >        r.assertNotInvoked();
2867 >    }}
2868  
2869      /**
2870 <     * thenComposeAsync result completes normally after normal
2805 <     * completion of source
2870 >     * thenCompose result completes exceptionally if action does
2871       */
2872 <    public void testThenComposeAsyncE() {
2873 <        CompletableFuture<Integer> f = new CompletableFuture<>();
2874 <        CompletableFutureInc r = new CompletableFutureInc();
2875 <        CompletableFuture<Integer> g = f.thenComposeAsync(r, new ThreadExecutor());
2876 <        f.complete(one);
2877 <        checkCompletedNormally(g, two);
2878 <    }
2872 >    public void testThenCompose_actionFailed() {
2873 >        for (ExecutionMode m : ExecutionMode.values())
2874 >        for (boolean createIncomplete : new boolean[] { true, false })
2875 >        for (Integer v1 : new Integer[] { 1, null })
2876 >    {
2877 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
2878 >        final FailingCompletableFutureFunction r
2879 >            = new FailingCompletableFutureFunction(m);
2880 >        if (!createIncomplete) assertTrue(f.complete(v1));
2881 >        final CompletableFuture<Integer> g = m.thenCompose(f, r);
2882 >        if (createIncomplete) assertTrue(f.complete(v1));
2883  
2815    /**
2816     * thenComposeAsync result completes exceptionally after
2817     * exceptional completion of source
2818     */
2819    public void testThenComposeAsync2E() {
2820        CompletableFuture<Integer> f = new CompletableFuture<>();
2821        CompletableFutureInc r = new CompletableFutureInc();
2822        CompletableFuture<Integer> g = f.thenComposeAsync(r, new ThreadExecutor());
2823        f.completeExceptionally(new CFException());
2884          checkCompletedWithWrappedCFException(g);
2885 <    }
2885 >        checkCompletedNormally(f, v1);
2886 >    }}
2887  
2888      /**
2889 <     * thenComposeAsync result completes exceptionally if action does
2889 >     * thenCompose result completes exceptionally if source cancelled
2890       */
2891 <    public void testThenComposeAsync3E() {
2892 <        CompletableFuture<Integer> f = new CompletableFuture<>();
2893 <        FailingCompletableFutureFunction r = new FailingCompletableFutureFunction();
2894 <        CompletableFuture<Integer> g = f.thenComposeAsync(r, new ThreadExecutor());
2895 <        f.complete(one);
2896 <        checkCompletedWithWrappedCFException(g);
2897 <    }
2891 >    public void testThenCompose_sourceCancelled() {
2892 >        for (ExecutionMode m : ExecutionMode.values())
2893 >        for (boolean createIncomplete : new boolean[] { true, false })
2894 >        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2895 >    {
2896 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
2897 >        final CompletableFutureInc r = new CompletableFutureInc(m);
2898 >        if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
2899 >        final CompletableFuture<Integer> g = m.thenCompose(f, r);
2900 >        if (createIncomplete) {
2901 >            checkIncomplete(g);
2902 >            assertTrue(f.cancel(mayInterruptIfRunning));
2903 >        }
2904  
2838    /**
2839     * thenComposeAsync result completes exceptionally if source cancelled
2840     */
2841    public void testThenComposeAsync4E() {
2842        CompletableFuture<Integer> f = new CompletableFuture<>();
2843        CompletableFutureInc r = new CompletableFutureInc();
2844        CompletableFuture<Integer> g = f.thenComposeAsync(r, new ThreadExecutor());
2845        assertTrue(f.cancel(true));
2905          checkCompletedWithWrappedCancellationException(g);
2906 <    }
2906 >        checkCancelled(f);
2907 >    }}
2908  
2909      // other static methods
2910  
# Line 2863 | Line 2923 | public class CompletableFutureTest exten
2923       */
2924      public void testAllOf_normal() throws Exception {
2925          for (int k = 1; k < 20; ++k) {
2926 <            CompletableFuture<Integer>[] fs = (CompletableFuture<Integer>[]) new CompletableFuture[k];
2926 >            CompletableFuture<Integer>[] fs
2927 >                = (CompletableFuture<Integer>[]) new CompletableFuture[k];
2928              for (int i = 0; i < k; ++i)
2929                  fs[i] = new CompletableFuture<>();
2930              CompletableFuture<Void> f = CompletableFuture.allOf(fs);
# Line 2877 | Line 2938 | public class CompletableFutureTest exten
2938          }
2939      }
2940  
2941 +    public void testAllOf_backwards() throws Exception {
2942 +        for (int k = 1; k < 20; ++k) {
2943 +            CompletableFuture<Integer>[] fs
2944 +                = (CompletableFuture<Integer>[]) new CompletableFuture[k];
2945 +            for (int i = 0; i < k; ++i)
2946 +                fs[i] = new CompletableFuture<>();
2947 +            CompletableFuture<Void> f = CompletableFuture.allOf(fs);
2948 +            for (int i = k - 1; i >= 0; i--) {
2949 +                checkIncomplete(f);
2950 +                checkIncomplete(CompletableFuture.allOf(fs));
2951 +                fs[i].complete(one);
2952 +            }
2953 +            checkCompletedNormally(f, null);
2954 +            checkCompletedNormally(CompletableFuture.allOf(fs), null);
2955 +        }
2956 +    }
2957 +
2958      /**
2959       * anyOf(no component futures) returns an incomplete future
2960       */
# Line 2933 | Line 3011 | public class CompletableFutureTest exten
3011          ThreadExecutor exec = new ThreadExecutor();
3012  
3013          Runnable[] throwingActions = {
3014 <            () -> { CompletableFuture.supplyAsync(null); },
3015 <            () -> { CompletableFuture.supplyAsync(null, exec); },
3016 <            () -> { CompletableFuture.supplyAsync(supplyOne, null); },
3017 <
3018 <            () -> { CompletableFuture.runAsync(null); },
3019 <            () -> { CompletableFuture.runAsync(null, exec); },
3020 <            () -> { CompletableFuture.runAsync(() -> {}, null); },
3021 <
3022 <            () -> { f.completeExceptionally(null); },
3023 <
3024 <            () -> { f.thenApply(null); },
3025 <            () -> { f.thenApplyAsync(null); },
3026 <            () -> { f.thenApplyAsync((x) -> x, null); },
3027 <            () -> { f.thenApplyAsync(null, exec); },
3028 <
3029 <            () -> { f.thenAccept(null); },
3030 <            () -> { f.thenAcceptAsync(null); },
3031 <            () -> { f.thenAcceptAsync((x) -> { ; }, null); },
3032 <            () -> { f.thenAcceptAsync(null, exec); },
3033 <
3034 <            () -> { f.thenRun(null); },
3035 <            () -> { f.thenRunAsync(null); },
3036 <            () -> { f.thenRunAsync(() -> { ; }, null); },
3037 <            () -> { f.thenRunAsync(null, exec); },
3038 <
3039 <            () -> { f.thenCombine(g, null); },
3040 <            () -> { f.thenCombineAsync(g, null); },
3041 <            () -> { f.thenCombineAsync(g, null, exec); },
3042 <            () -> { f.thenCombine(nullFuture, (x, y) -> x); },
3043 <            () -> { f.thenCombineAsync(nullFuture, (x, y) -> x); },
3044 <            () -> { f.thenCombineAsync(nullFuture, (x, y) -> x, exec); },
3045 <            () -> { f.thenCombineAsync(g, (x, y) -> x, null); },
3046 <
3047 <            () -> { f.thenAcceptBoth(g, null); },
3048 <            () -> { f.thenAcceptBothAsync(g, null); },
3049 <            () -> { f.thenAcceptBothAsync(g, null, exec); },
3050 <            () -> { f.thenAcceptBoth(nullFuture, (x, y) -> {}); },
3051 <            () -> { f.thenAcceptBothAsync(nullFuture, (x, y) -> {}); },
3052 <            () -> { f.thenAcceptBothAsync(nullFuture, (x, y) -> {}, exec); },
3053 <            () -> { f.thenAcceptBothAsync(g, (x, y) -> {}, null); },
3054 <
3055 <            () -> { f.runAfterBoth(g, null); },
3056 <            () -> { f.runAfterBothAsync(g, null); },
3057 <            () -> { f.runAfterBothAsync(g, null, exec); },
3058 <            () -> { f.runAfterBoth(nullFuture, () -> {}); },
3059 <            () -> { f.runAfterBothAsync(nullFuture, () -> {}); },
3060 <            () -> { f.runAfterBothAsync(nullFuture, () -> {}, exec); },
3061 <            () -> { f.runAfterBothAsync(g, () -> {}, null); },
3062 <
3063 <            () -> { f.applyToEither(g, null); },
3064 <            () -> { f.applyToEitherAsync(g, null); },
3065 <            () -> { f.applyToEitherAsync(g, null, exec); },
3066 <            () -> { f.applyToEither(nullFuture, (x) -> x); },
3067 <            () -> { f.applyToEitherAsync(nullFuture, (x) -> x); },
3068 <            () -> { f.applyToEitherAsync(nullFuture, (x) -> x, exec); },
3069 <            () -> { f.applyToEitherAsync(g, (x) -> x, null); },
3070 <
3071 <            () -> { f.acceptEither(g, null); },
3072 <            () -> { f.acceptEitherAsync(g, null); },
3073 <            () -> { f.acceptEitherAsync(g, null, exec); },
3074 <            () -> { f.acceptEither(nullFuture, (x) -> {}); },
3075 <            () -> { f.acceptEitherAsync(nullFuture, (x) -> {}); },
3076 <            () -> { f.acceptEitherAsync(nullFuture, (x) -> {}, exec); },
3077 <            () -> { f.acceptEitherAsync(g, (x) -> {}, null); },
3078 <
3079 <            () -> { f.runAfterEither(g, null); },
3080 <            () -> { f.runAfterEitherAsync(g, null); },
3081 <            () -> { f.runAfterEitherAsync(g, null, exec); },
3082 <            () -> { f.runAfterEither(nullFuture, () -> {}); },
3083 <            () -> { f.runAfterEitherAsync(nullFuture, () -> {}); },
3084 <            () -> { f.runAfterEitherAsync(nullFuture, () -> {}, exec); },
3085 <            () -> { f.runAfterEitherAsync(g, () -> {}, null); },
3086 <
3087 <            () -> { f.thenCompose(null); },
3088 <            () -> { f.thenComposeAsync(null); },
3089 <            () -> { f.thenComposeAsync(new CompletableFutureInc(), null); },
3090 <            () -> { f.thenComposeAsync(null, exec); },
3091 <
3092 <            () -> { f.exceptionally(null); },
3093 <
3094 <            () -> { f.handle(null); },
3095 <
3096 <            () -> { CompletableFuture.allOf((CompletableFuture<?>)null); },
3097 <            () -> { CompletableFuture.allOf((CompletableFuture<?>[])null); },
3098 <            () -> { CompletableFuture.allOf(f, null); },
3099 <            () -> { CompletableFuture.allOf(null, f); },
3100 <
3101 <            () -> { CompletableFuture.anyOf((CompletableFuture<?>)null); },
3102 <            () -> { CompletableFuture.anyOf((CompletableFuture<?>[])null); },
3103 <            () -> { CompletableFuture.anyOf(f, null); },
3104 <            () -> { CompletableFuture.anyOf(null, f); },
3014 >            () -> CompletableFuture.supplyAsync(null),
3015 >            () -> CompletableFuture.supplyAsync(null, exec),
3016 >            () -> CompletableFuture.supplyAsync(new IntegerSupplier(ExecutionMode.DEFAULT, 42), null),
3017 >
3018 >            () -> CompletableFuture.runAsync(null),
3019 >            () -> CompletableFuture.runAsync(null, exec),
3020 >            () -> CompletableFuture.runAsync(() -> {}, null),
3021 >
3022 >            () -> f.completeExceptionally(null),
3023 >
3024 >            () -> f.thenApply(null),
3025 >            () -> f.thenApplyAsync(null),
3026 >            () -> f.thenApplyAsync((x) -> x, null),
3027 >            () -> f.thenApplyAsync(null, exec),
3028 >
3029 >            () -> f.thenAccept(null),
3030 >            () -> f.thenAcceptAsync(null),
3031 >            () -> f.thenAcceptAsync((x) -> {} , null),
3032 >            () -> f.thenAcceptAsync(null, exec),
3033 >
3034 >            () -> f.thenRun(null),
3035 >            () -> f.thenRunAsync(null),
3036 >            () -> f.thenRunAsync(() -> {} , null),
3037 >            () -> f.thenRunAsync(null, exec),
3038 >
3039 >            () -> f.thenCombine(g, null),
3040 >            () -> f.thenCombineAsync(g, null),
3041 >            () -> f.thenCombineAsync(g, null, exec),
3042 >            () -> f.thenCombine(nullFuture, (x, y) -> x),
3043 >            () -> f.thenCombineAsync(nullFuture, (x, y) -> x),
3044 >            () -> f.thenCombineAsync(nullFuture, (x, y) -> x, exec),
3045 >            () -> f.thenCombineAsync(g, (x, y) -> x, null),
3046 >
3047 >            () -> f.thenAcceptBoth(g, null),
3048 >            () -> f.thenAcceptBothAsync(g, null),
3049 >            () -> f.thenAcceptBothAsync(g, null, exec),
3050 >            () -> f.thenAcceptBoth(nullFuture, (x, y) -> {}),
3051 >            () -> f.thenAcceptBothAsync(nullFuture, (x, y) -> {}),
3052 >            () -> f.thenAcceptBothAsync(nullFuture, (x, y) -> {}, exec),
3053 >            () -> f.thenAcceptBothAsync(g, (x, y) -> {}, null),
3054 >
3055 >            () -> f.runAfterBoth(g, null),
3056 >            () -> f.runAfterBothAsync(g, null),
3057 >            () -> f.runAfterBothAsync(g, null, exec),
3058 >            () -> f.runAfterBoth(nullFuture, () -> {}),
3059 >            () -> f.runAfterBothAsync(nullFuture, () -> {}),
3060 >            () -> f.runAfterBothAsync(nullFuture, () -> {}, exec),
3061 >            () -> f.runAfterBothAsync(g, () -> {}, null),
3062 >
3063 >            () -> f.applyToEither(g, null),
3064 >            () -> f.applyToEitherAsync(g, null),
3065 >            () -> f.applyToEitherAsync(g, null, exec),
3066 >            () -> f.applyToEither(nullFuture, (x) -> x),
3067 >            () -> f.applyToEitherAsync(nullFuture, (x) -> x),
3068 >            () -> f.applyToEitherAsync(nullFuture, (x) -> x, exec),
3069 >            () -> f.applyToEitherAsync(g, (x) -> x, null),
3070 >
3071 >            () -> f.acceptEither(g, null),
3072 >            () -> f.acceptEitherAsync(g, null),
3073 >            () -> f.acceptEitherAsync(g, null, exec),
3074 >            () -> f.acceptEither(nullFuture, (x) -> {}),
3075 >            () -> f.acceptEitherAsync(nullFuture, (x) -> {}),
3076 >            () -> f.acceptEitherAsync(nullFuture, (x) -> {}, exec),
3077 >            () -> f.acceptEitherAsync(g, (x) -> {}, null),
3078 >
3079 >            () -> f.runAfterEither(g, null),
3080 >            () -> f.runAfterEitherAsync(g, null),
3081 >            () -> f.runAfterEitherAsync(g, null, exec),
3082 >            () -> f.runAfterEither(nullFuture, () -> {}),
3083 >            () -> f.runAfterEitherAsync(nullFuture, () -> {}),
3084 >            () -> f.runAfterEitherAsync(nullFuture, () -> {}, exec),
3085 >            () -> f.runAfterEitherAsync(g, () -> {}, null),
3086 >
3087 >            () -> f.thenCompose(null),
3088 >            () -> f.thenComposeAsync(null),
3089 >            () -> f.thenComposeAsync(new CompletableFutureInc(ExecutionMode.EXECUTOR), null),
3090 >            () -> f.thenComposeAsync(null, exec),
3091 >
3092 >            () -> f.exceptionally(null),
3093 >
3094 >            () -> f.handle(null),
3095 >
3096 >            () -> CompletableFuture.allOf((CompletableFuture<?>)null),
3097 >            () -> CompletableFuture.allOf((CompletableFuture<?>[])null),
3098 >            () -> CompletableFuture.allOf(f, null),
3099 >            () -> CompletableFuture.allOf(null, f),
3100 >
3101 >            () -> CompletableFuture.anyOf((CompletableFuture<?>)null),
3102 >            () -> CompletableFuture.anyOf((CompletableFuture<?>[])null),
3103 >            () -> CompletableFuture.anyOf(f, null),
3104 >            () -> CompletableFuture.anyOf(null, f),
3105 >
3106 >            () -> f.obtrudeException(null),
3107          };
3108  
3109          assertThrows(NullPointerException.class, throwingActions);
# Line 3038 | Line 3118 | public class CompletableFutureTest exten
3118          assertSame(f, f.toCompletableFuture());
3119      }
3120  
3121 <    /**
3042 <     * whenComplete action executes on normal completion, propagating
3043 <     * source result.
3044 <     */
3045 <    public void testWhenComplete1() {
3046 <        final AtomicInteger a = new AtomicInteger();
3047 <        CompletableFuture<Integer> f = new CompletableFuture<>();
3048 <        CompletableFuture<Integer> g =
3049 <            f.whenComplete((Integer x, Throwable t) -> a.getAndIncrement());
3050 <        f.complete(three);
3051 <        checkCompletedNormally(f, three);
3052 <        checkCompletedNormally(g, three);
3053 <        assertEquals(a.get(), 1);
3054 <    }
3055 <
3056 <    /**
3057 <     * whenComplete action executes on exceptional completion, propagating
3058 <     * source result.
3059 <     */
3060 <    public void testWhenComplete2() {
3061 <        final AtomicInteger a = new AtomicInteger();
3062 <        CompletableFuture<Integer> f = new CompletableFuture<>();
3063 <        CompletableFuture<Integer> g =
3064 <            f.whenComplete((Integer x, Throwable t) -> a.getAndIncrement());
3065 <        f.completeExceptionally(new CFException());
3066 <        assertTrue(f.isCompletedExceptionally());
3067 <        assertTrue(g.isCompletedExceptionally());
3068 <        assertEquals(a.get(), 1);
3069 <    }
3070 <
3071 <    /**
3072 <     * If a whenComplete action throws an exception when triggered by
3073 <     * a normal completion, it completes exceptionally
3074 <     */
3075 <    public void testWhenComplete3() {
3076 <        CompletableFuture<Integer> f = new CompletableFuture<>();
3077 <        CompletableFuture<Integer> g =
3078 <            f.whenComplete((Integer x, Throwable t) ->
3079 <                           { throw new CFException(); } );
3080 <        f.complete(three);
3081 <        checkCompletedNormally(f, three);
3082 <        assertTrue(g.isCompletedExceptionally());
3083 <        checkCompletedWithWrappedCFException(g);
3084 <    }
3085 <
3086 <    /**
3087 <     * whenCompleteAsync action executes on normal completion, propagating
3088 <     * source result.
3089 <     */
3090 <    public void testWhenCompleteAsync1() {
3091 <        final AtomicInteger a = new AtomicInteger();
3092 <        CompletableFuture<Integer> f = new CompletableFuture<>();
3093 <        CompletableFuture<Integer> g =
3094 <            f.whenCompleteAsync((Integer x, Throwable t) -> a.getAndIncrement());
3095 <        f.complete(three);
3096 <        checkCompletedNormally(f, three);
3097 <        checkCompletedNormally(g, three);
3098 <        assertEquals(a.get(), 1);
3099 <    }
3100 <
3101 <    /**
3102 <     * whenCompleteAsync action executes on exceptional completion, propagating
3103 <     * source result.
3104 <     */
3105 <    public void testWhenCompleteAsync2() {
3106 <        final AtomicInteger a = new AtomicInteger();
3107 <        CompletableFuture<Integer> f = new CompletableFuture<>();
3108 <        CompletableFuture<Integer> g =
3109 <            f.whenCompleteAsync((Integer x, Throwable t) -> a.getAndIncrement());
3110 <        f.completeExceptionally(new CFException());
3111 <        checkCompletedWithWrappedCFException(f);
3112 <        checkCompletedWithWrappedCFException(g);
3113 <    }
3114 <
3115 <    /**
3116 <     * If a whenCompleteAsync action throws an exception when
3117 <     * triggered by a normal completion, it completes exceptionally
3118 <     */
3119 <    public void testWhenCompleteAsync3() {
3120 <        CompletableFuture<Integer> f = new CompletableFuture<>();
3121 <        CompletableFuture<Integer> g =
3122 <            f.whenCompleteAsync((Integer x, Throwable t) ->
3123 <                           { throw new CFException(); } );
3124 <        f.complete(three);
3125 <        checkCompletedNormally(f, three);
3126 <        checkCompletedWithWrappedCFException(g);
3127 <    }
3121 >    //--- tests of implementation details; not part of official tck ---
3122  
3123 <    /**
3124 <     * whenCompleteAsync action executes on normal completion, propagating
3125 <     * source result.
3126 <     */
3127 <    public void testWhenCompleteAsync1e() {
3128 <        final AtomicInteger a = new AtomicInteger();
3129 <        ThreadExecutor exec = new ThreadExecutor();
3136 <        CompletableFuture<Integer> f = new CompletableFuture<>();
3137 <        CompletableFuture<Integer> g =
3138 <            f.whenCompleteAsync((Integer x, Throwable t) -> a.getAndIncrement(),
3139 <                                exec);
3140 <        f.complete(three);
3141 <        checkCompletedNormally(f, three);
3142 <        checkCompletedNormally(g, three);
3143 <        assertEquals(a.get(), 1);
3123 >    Object resultOf(CompletableFuture<?> f) {
3124 >        try {
3125 >            java.lang.reflect.Field resultField
3126 >                = CompletableFuture.class.getDeclaredField("result");
3127 >            resultField.setAccessible(true);
3128 >            return resultField.get(f);
3129 >        } catch (Throwable t) { throw new AssertionError(t); }
3130      }
3131  
3132 <    /**
3133 <     * whenCompleteAsync action executes on exceptional completion, propagating
3134 <     * source result.
3135 <     */
3136 <    public void testWhenCompleteAsync2e() {
3137 <        final AtomicInteger a = new AtomicInteger();
3138 <        ThreadExecutor exec = new ThreadExecutor();
3153 <        CompletableFuture<Integer> f = new CompletableFuture<>();
3154 <        CompletableFuture<Integer> g =
3155 <            f.whenCompleteAsync((Integer x, Throwable t) -> a.getAndIncrement(),
3156 <                                exec);
3157 <        f.completeExceptionally(new CFException());
3158 <        checkCompletedWithWrappedCFException(f);
3159 <        checkCompletedWithWrappedCFException(g);
3160 <    }
3132 >    public void testExceptionPropagationReusesResultObject() {
3133 >        if (!testImplementationDetails) return;
3134 >        for (ExecutionMode m : ExecutionMode.values())
3135 >    {
3136 >        final CFException ex = new CFException();
3137 >        final CompletableFuture<Integer> v42 = CompletableFuture.completedFuture(42);
3138 >        final CompletableFuture<Integer> incomplete = new CompletableFuture<>();
3139  
3140 <    /**
3141 <     * If a whenCompleteAsync action throws an exception when triggered
3164 <     * by a normal completion, it completes exceptionally
3165 <     */
3166 <    public void testWhenCompleteAsync3e() {
3167 <        ThreadExecutor exec = new ThreadExecutor();
3168 <        CompletableFuture<Integer> f = new CompletableFuture<>();
3169 <        CompletableFuture<Integer> g =
3170 <            f.whenCompleteAsync((Integer x, Throwable t) ->
3171 <                                { throw new CFException(); },
3172 <                                exec);
3173 <        f.complete(three);
3174 <        checkCompletedNormally(f, three);
3175 <        checkCompletedWithWrappedCFException(g);
3176 <    }
3140 >        List<Function<CompletableFuture<Integer>, CompletableFuture<?>>> dependentFactories
3141 >            = new ArrayList<>();
3142  
3143 <    /**
3144 <     * handleAsync action completes normally with function value on
3145 <     * either normal or exceptional completion of source
3181 <     */
3182 <    public void testHandleAsync() {
3183 <        CompletableFuture<Integer> f, g;
3184 <        IntegerHandler r;
3143 >        dependentFactories.add((y) -> m.thenRun(y, new Noop(m)));
3144 >        dependentFactories.add((y) -> m.thenAccept(y, new NoopConsumer(m)));
3145 >        dependentFactories.add((y) -> m.thenApply(y, new IncFunction(m)));
3146  
3147 <        f = new CompletableFuture<>();
3148 <        g = f.handleAsync(r = new IntegerHandler());
3149 <        assertFalse(r.ran);
3189 <        f.completeExceptionally(new CFException());
3190 <        checkCompletedWithWrappedCFException(f);
3191 <        checkCompletedNormally(g, three);
3192 <        assertTrue(r.ran);
3147 >        dependentFactories.add((y) -> m.runAfterEither(y, incomplete, new Noop(m)));
3148 >        dependentFactories.add((y) -> m.acceptEither(y, incomplete, new NoopConsumer(m)));
3149 >        dependentFactories.add((y) -> m.applyToEither(y, incomplete, new IncFunction(m)));
3150  
3151 <        f = new CompletableFuture<>();
3152 <        g = f.handleAsync(r = new IntegerHandler());
3153 <        assertFalse(r.ran);
3197 <        f.completeExceptionally(new CFException());
3198 <        checkCompletedWithWrappedCFException(f);
3199 <        checkCompletedNormally(g, three);
3200 <        assertTrue(r.ran);
3151 >        dependentFactories.add((y) -> m.runAfterBoth(y, v42, new Noop(m)));
3152 >        dependentFactories.add((y) -> m.thenAcceptBoth(y, v42, new SubtractAction(m)));
3153 >        dependentFactories.add((y) -> m.thenCombine(y, v42, new SubtractFunction(m)));
3154  
3155 <        f = new CompletableFuture<>();
3203 <        g = f.handleAsync(r = new IntegerHandler());
3204 <        assertFalse(r.ran);
3205 <        f.complete(one);
3206 <        checkCompletedNormally(f, one);
3207 <        checkCompletedNormally(g, two);
3208 <        assertTrue(r.ran);
3155 >        dependentFactories.add((y) -> m.whenComplete(y, (Integer x, Throwable t) -> {}));
3156  
3157 <        f = new CompletableFuture<>();
3211 <        g = f.handleAsync(r = new IntegerHandler());
3212 <        assertFalse(r.ran);
3213 <        f.complete(one);
3214 <        checkCompletedNormally(f, one);
3215 <        checkCompletedNormally(g, two);
3216 <        assertTrue(r.ran);
3217 <    }
3157 >        dependentFactories.add((y) -> m.thenCompose(y, new CompletableFutureInc(m)));
3158  
3159 <    /**
3160 <     * handleAsync action with Executor completes normally with
3221 <     * function value on either normal or exceptional completion of
3222 <     * source
3223 <     */
3224 <    public void testHandleAsync2() {
3225 <        CompletableFuture<Integer> f, g;
3226 <        ThreadExecutor exec = new ThreadExecutor();
3227 <        IntegerHandler r;
3159 >        dependentFactories.add((y) -> CompletableFuture.allOf(new CompletableFuture<?>[] {y, v42}));
3160 >        dependentFactories.add((y) -> CompletableFuture.anyOf(new CompletableFuture<?>[] {y, incomplete}));
3161  
3162 <        f = new CompletableFuture<>();
3163 <        g = f.handleAsync(r = new IntegerHandler(), exec);
3164 <        assertFalse(r.ran);
3165 <        f.completeExceptionally(new CFException());
3166 <        checkCompletedWithWrappedCFException(f);
3167 <        checkCompletedNormally(g, three);
3168 <        assertTrue(r.ran);
3162 >        for (Function<CompletableFuture<Integer>, CompletableFuture<?>>
3163 >                 dependentFactory : dependentFactories) {
3164 >            CompletableFuture<Integer> f = new CompletableFuture<>();
3165 >            f.completeExceptionally(ex);
3166 >            CompletableFuture<Integer> src = m.thenApply(f, new IncFunction(m));
3167 >            checkCompletedWithWrappedException(src, ex);
3168 >            CompletableFuture<?> dep = dependentFactory.apply(src);
3169 >            checkCompletedWithWrappedException(dep, ex);
3170 >            assertSame(resultOf(src), resultOf(dep));
3171 >        }
3172  
3173 <        f = new CompletableFuture<>();
3174 <        g = f.handleAsync(r = new IntegerHandler(), exec);
3175 <        assertFalse(r.ran);
3176 <        f.completeExceptionally(new CFException());
3177 <        checkCompletedWithWrappedCFException(f);
3178 <        checkCompletedNormally(g, three);
3179 <        assertTrue(r.ran);
3173 >        for (Function<CompletableFuture<Integer>, CompletableFuture<?>>
3174 >                 dependentFactory : dependentFactories) {
3175 >            CompletableFuture<Integer> f = new CompletableFuture<>();
3176 >            CompletableFuture<Integer> src = m.thenApply(f, new IncFunction(m));
3177 >            CompletableFuture<?> dep = dependentFactory.apply(src);
3178 >            f.completeExceptionally(ex);
3179 >            checkCompletedWithWrappedException(src, ex);
3180 >            checkCompletedWithWrappedException(dep, ex);
3181 >            assertSame(resultOf(src), resultOf(dep));
3182 >        }
3183  
3184 <        f = new CompletableFuture<>();
3185 <        g = f.handleAsync(r = new IntegerHandler(), exec);
3186 <        assertFalse(r.ran);
3187 <        f.complete(one);
3188 <        checkCompletedNormally(f, one);
3189 <        checkCompletedNormally(g, two);
3190 <        assertTrue(r.ran);
3184 >        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
3185 >        for (Function<CompletableFuture<Integer>, CompletableFuture<?>>
3186 >                 dependentFactory : dependentFactories) {
3187 >            CompletableFuture<Integer> f = new CompletableFuture<>();
3188 >            f.cancel(mayInterruptIfRunning);
3189 >            checkCancelled(f);
3190 >            CompletableFuture<Integer> src = m.thenApply(f, new IncFunction(m));
3191 >            checkCompletedWithWrappedCancellationException(src);
3192 >            CompletableFuture<?> dep = dependentFactory.apply(src);
3193 >            checkCompletedWithWrappedCancellationException(dep);
3194 >            assertSame(resultOf(src), resultOf(dep));
3195 >        }
3196  
3197 <        f = new CompletableFuture<>();
3198 <        g = f.handleAsync(r = new IntegerHandler(), exec);
3199 <        assertFalse(r.ran);
3200 <        f.complete(one);
3201 <        checkCompletedNormally(f, one);
3202 <        checkCompletedNormally(g, two);
3203 <        assertTrue(r.ran);
3204 <    }
3197 >        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
3198 >        for (Function<CompletableFuture<Integer>, CompletableFuture<?>>
3199 >                 dependentFactory : dependentFactories) {
3200 >            CompletableFuture<Integer> f = new CompletableFuture<>();
3201 >            CompletableFuture<Integer> src = m.thenApply(f, new IncFunction(m));
3202 >            CompletableFuture<?> dep = dependentFactory.apply(src);
3203 >            f.cancel(mayInterruptIfRunning);
3204 >            checkCancelled(f);
3205 >            checkCompletedWithWrappedCancellationException(src);
3206 >            checkCompletedWithWrappedCancellationException(dep);
3207 >            assertSame(resultOf(src), resultOf(dep));
3208 >        }
3209 >    }}
3210  
3211   }

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