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Comparing jsr166/src/test/tck/CompletableFutureTest.java (file contents):
Revision 1.14 by jsr166, Mon Apr 1 20:06:25 2013 UTC vs.
Revision 1.94 by jsr166, Wed Jun 18 02:37:38 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 55 | Line 58 | public class CompletableFutureTest exten
58  
59      <T> void checkCompletedNormally(CompletableFuture<T> f, T value) {
60          try {
61 +            assertEquals(value, f.get(LONG_DELAY_MS, MILLISECONDS));
62 +        } catch (Throwable fail) { threadUnexpectedException(fail); }
63 +        try {
64              assertEquals(value, f.join());
65          } catch (Throwable fail) { threadUnexpectedException(fail); }
66          try {
# Line 63 | Line 69 | public class CompletableFutureTest exten
69          try {
70              assertEquals(value, f.get());
71          } catch (Throwable fail) { threadUnexpectedException(fail); }
66        try {
67            assertEquals(value, f.get(0L, SECONDS));
68        } catch (Throwable fail) { threadUnexpectedException(fail); }
72          assertTrue(f.isDone());
73          assertFalse(f.isCancelled());
74 +        assertFalse(f.isCompletedExceptionally());
75          assertTrue(f.toString().contains("[Completed normally]"));
76      }
77  
78      void checkCompletedWithWrappedCFException(CompletableFuture<?> f) {
79          try {
80 +            f.get(LONG_DELAY_MS, MILLISECONDS);
81 +            shouldThrow();
82 +        } catch (ExecutionException success) {
83 +            assertTrue(success.getCause() instanceof CFException);
84 +        } catch (Throwable fail) { threadUnexpectedException(fail); }
85 +        try {
86              f.join();
87              shouldThrow();
88          } catch (CompletionException success) {
# Line 90 | Line 100 | public class CompletableFutureTest exten
100          } catch (ExecutionException success) {
101              assertTrue(success.getCause() instanceof CFException);
102          } catch (Throwable fail) { threadUnexpectedException(fail); }
103 +        assertTrue(f.isDone());
104 +        assertFalse(f.isCancelled());
105 +        assertTrue(f.toString().contains("[Completed exceptionally]"));
106 +    }
107 +
108 +    <U> void checkCompletedExceptionallyWithRootCause(CompletableFuture<U> f,
109 +                                                      Throwable ex) {
110          try {
111 <            f.get(0L, SECONDS);
111 >            f.get(LONG_DELAY_MS, MILLISECONDS);
112              shouldThrow();
113          } catch (ExecutionException success) {
114 <            assertTrue(success.getCause() instanceof CFException);
114 >            assertSame(ex, success.getCause());
115          } catch (Throwable fail) { threadUnexpectedException(fail); }
116 +        try {
117 +            f.join();
118 +            shouldThrow();
119 +        } catch (CompletionException success) {
120 +            assertSame(ex, success.getCause());
121 +        }
122 +        try {
123 +            f.getNow(null);
124 +            shouldThrow();
125 +        } catch (CompletionException success) {
126 +            assertSame(ex, success.getCause());
127 +        }
128 +        try {
129 +            f.get();
130 +            shouldThrow();
131 +        } catch (ExecutionException success) {
132 +            assertSame(ex, success.getCause());
133 +        } catch (Throwable fail) { threadUnexpectedException(fail); }
134 +
135          assertTrue(f.isDone());
136          assertFalse(f.isCancelled());
137          assertTrue(f.toString().contains("[Completed exceptionally]"));
138      }
139  
140 +    <U> void checkCompletedWithWrappedException(CompletableFuture<U> f,
141 +                                                Throwable ex) {
142 +        checkCompletedExceptionallyWithRootCause(f, ex);
143 +        try {
144 +            CompletableFuture<Throwable> spy = f.handle
145 +                ((U u, Throwable t) -> t);
146 +            assertTrue(spy.join() instanceof CompletionException);
147 +            assertSame(ex, spy.join().getCause());
148 +        } catch (Throwable fail) { threadUnexpectedException(fail); }
149 +    }
150 +
151 +    <U> void checkCompletedExceptionally(CompletableFuture<U> f, Throwable ex) {
152 +        checkCompletedExceptionallyWithRootCause(f, ex);
153 +        try {
154 +            CompletableFuture<Throwable> spy = f.handle
155 +                ((U u, Throwable t) -> t);
156 +            assertSame(ex, spy.join());
157 +        } catch (Throwable fail) { threadUnexpectedException(fail); }
158 +    }
159 +
160      void checkCancelled(CompletableFuture<?> f) {
161          try {
162 +            f.get(LONG_DELAY_MS, MILLISECONDS);
163 +            shouldThrow();
164 +        } catch (CancellationException success) {
165 +        } catch (Throwable fail) { threadUnexpectedException(fail); }
166 +        try {
167              f.join();
168              shouldThrow();
169          } catch (CancellationException success) {}
# Line 115 | Line 176 | public class CompletableFutureTest exten
176              shouldThrow();
177          } catch (CancellationException success) {
178          } catch (Throwable fail) { threadUnexpectedException(fail); }
118        try {
119            f.get(0L, SECONDS);
120            shouldThrow();
121        } catch (CancellationException success) {
122        } catch (Throwable fail) { threadUnexpectedException(fail); }
179          assertTrue(f.isDone());
180 +        assertTrue(f.isCompletedExceptionally());
181          assertTrue(f.isCancelled());
182          assertTrue(f.toString().contains("[Completed exceptionally]"));
183      }
184  
185      void checkCompletedWithWrappedCancellationException(CompletableFuture<?> f) {
186          try {
187 +            f.get(LONG_DELAY_MS, MILLISECONDS);
188 +            shouldThrow();
189 +        } catch (ExecutionException success) {
190 +            assertTrue(success.getCause() instanceof CancellationException);
191 +        } catch (Throwable fail) { threadUnexpectedException(fail); }
192 +        try {
193              f.join();
194              shouldThrow();
195          } catch (CompletionException success) {
# Line 144 | Line 207 | public class CompletableFutureTest exten
207          } catch (ExecutionException success) {
208              assertTrue(success.getCause() instanceof CancellationException);
209          } catch (Throwable fail) { threadUnexpectedException(fail); }
147        try {
148            f.get(0L, SECONDS);
149            shouldThrow();
150        } catch (ExecutionException success) {
151            assertTrue(success.getCause() instanceof CancellationException);
152        } catch (Throwable fail) { threadUnexpectedException(fail); }
210          assertTrue(f.isDone());
211          assertFalse(f.isCancelled());
212 +        assertTrue(f.isCompletedExceptionally());
213          assertTrue(f.toString().contains("[Completed exceptionally]"));
214      }
215  
# Line 160 | Line 218 | public class CompletableFutureTest exten
218       * by methods isDone, isCancelled, and getNow
219       */
220      public void testConstructor() {
221 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
221 >        CompletableFuture<Integer> f = new CompletableFuture<>();
222          checkIncomplete(f);
223      }
224  
# Line 169 | Line 227 | public class CompletableFutureTest exten
227       * isCancelled, join, get, and getNow
228       */
229      public void testComplete() {
230 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
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
241       * methods isDone, isCancelled, join, get, and getNow
242       */
243      public void testCompleteExceptionally() {
244 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
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 191 | Line 253 | public class CompletableFutureTest exten
253       * methods isDone, isCancelled, join, get, and getNow
254       */
255      public void testCancel() {
256 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
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
267       */
268      public void testObtrudeValue() {
269 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
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);
275          f.obtrudeValue(two);
276          checkCompletedNormally(f, two);
277 <        f = new CompletableFuture<Integer>();
277 >        f = new CompletableFuture<>();
278          f.obtrudeValue(three);
279          checkCompletedNormally(f, three);
280 <        f = new CompletableFuture<Integer>();
280 >        f.obtrudeValue(null);
281 >        checkCompletedNormally(f, null);
282 >        f = new CompletableFuture<>();
283          f.completeExceptionally(new CFException());
284          f.obtrudeValue(four);
285          checkCompletedNormally(f, four);
# Line 222 | Line 289 | public class CompletableFutureTest exten
289       * obtrudeException forces completion with given exception
290       */
291      public void testObtrudeException() {
292 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
293 <        checkIncomplete(f);
294 <        f.complete(one);
295 <        checkCompletedNormally(f, one);
296 <        f.obtrudeException(new CFException());
297 <        checkCompletedWithWrappedCFException(f);
298 <        f = new CompletableFuture<Integer>();
299 <        f.obtrudeException(new CFException());
300 <        checkCompletedWithWrappedCFException(f);
301 <        f = new CompletableFuture<Integer>();
302 <        f.completeExceptionally(new CFException());
303 <        f.obtrudeValue(four);
304 <        checkCompletedNormally(f, four);
305 <        f.obtrudeException(new CFException());
306 <        checkCompletedWithWrappedCFException(f);
307 <    }
292 >        for (Integer v1 : new Integer[] { 1, null })
293 >    {
294 >        CFException ex;
295 >        CompletableFuture<Integer> f;
296 >
297 >        f = new CompletableFuture<>();
298 >        assertTrue(f.complete(v1));
299 >        for (int i = 0; i < 2; i++) {
300 >            f.obtrudeException(ex = new CFException());
301 >            checkCompletedExceptionally(f, ex);
302 >        }
303 >
304 >        f = new CompletableFuture<>();
305 >        for (int i = 0; i < 2; i++) {
306 >            f.obtrudeException(ex = new CFException());
307 >            checkCompletedExceptionally(f, ex);
308 >        }
309 >
310 >        f = new CompletableFuture<>();
311 >        f.completeExceptionally(ex = new CFException());
312 >        f.obtrudeValue(v1);
313 >        checkCompletedNormally(f, v1);
314 >        f.obtrudeException(ex = new CFException());
315 >        checkCompletedExceptionally(f, ex);
316 >        f.completeExceptionally(new CFException());
317 >        checkCompletedExceptionally(f, ex);
318 >        assertFalse(f.complete(v1));
319 >        checkCompletedExceptionally(f, ex);
320 >    }}
321  
322      /**
323       * getNumberOfDependents returns number of dependent tasks
324       */
325      public void testGetNumberOfDependents() {
326 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
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);
334 <        checkCompletedNormally(g, null);
335 <        assertEquals(f.getNumberOfDependents(), 0);
336 <        assertEquals(g.getNumberOfDependents(), 0);
337 <    }
338 <
326 >        for (ExecutionMode m : ExecutionMode.values())
327 >        for (Integer v1 : new Integer[] { 1, null })
328 >    {
329 >        CompletableFuture<Integer> f = new CompletableFuture<>();
330 >        assertEquals(0, f.getNumberOfDependents());
331 >        final CompletableFuture<Void> g = m.thenRun(f, new Noop(m));
332 >        assertEquals(1, f.getNumberOfDependents());
333 >        assertEquals(0, g.getNumberOfDependents());
334 >        final CompletableFuture<Void> h = m.thenRun(f, new Noop(m));
335 >        assertEquals(2, f.getNumberOfDependents());
336 >        assertEquals(0, h.getNumberOfDependents());
337 >        assertTrue(f.complete(v1));
338 >        checkCompletedNormally(g, null);
339 >        checkCompletedNormally(h, null);
340 >        assertEquals(0, f.getNumberOfDependents());
341 >        assertEquals(0, g.getNumberOfDependents());
342 >        assertEquals(0, h.getNumberOfDependents());
343 >    }}
344  
345      /**
346       * toString indicates current completion state
# Line 266 | 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 282 | Line 373 | public class CompletableFutureTest exten
373          checkCompletedNormally(f, "test");
374      }
375  
376 <    static final Supplier<Integer> supplyOne =
377 <        () -> Integer.valueOf(1);
378 <    static final Function<Integer, Integer> inc =
379 <        (Integer x) -> Integer.valueOf(x.intValue() + 1);
380 <    static final BiFunction<Integer, Integer, Integer> add =
381 <        (Integer x, Integer y) -> Integer.valueOf(x.intValue() + y.intValue());
382 <    static final class IncAction implements Consumer<Integer> {
383 <        int value;
384 <        public void accept(Integer x) { value = x.intValue() + 1; }
376 >    abstract class CheckedAction {
377 >        int invocationCount = 0;
378 >        final ExecutionMode m;
379 >        CheckedAction(ExecutionMode m) { this.m = m; }
380 >        void invoked() {
381 >            m.checkExecutionMode();
382 >            assertEquals(0, invocationCount++);
383 >        }
384 >        void assertNotInvoked() { assertEquals(0, invocationCount); }
385 >        void assertInvoked() { assertEquals(1, invocationCount); }
386 >    }
387 >
388 >    abstract class CheckedIntegerAction extends CheckedAction {
389 >        Integer value;
390 >        CheckedIntegerAction(ExecutionMode m) { super(m); }
391 >        void assertValue(Integer expected) {
392 >            assertInvoked();
393 >            assertEquals(expected, value);
394 >        }
395 >    }
396 >
397 >    class IntegerSupplier extends CheckedAction
398 >        implements Supplier<Integer>
399 >    {
400 >        final Integer value;
401 >        IntegerSupplier(ExecutionMode m, Integer value) {
402 >            super(m);
403 >            this.value = value;
404 >        }
405 >        public Integer get() {
406 >            invoked();
407 >            return value;
408 >        }
409 >    }
410 >
411 >    // A function that handles and produces null values as well.
412 >    static Integer inc(Integer x) {
413 >        return (x == null) ? null : x + 1;
414 >    }
415 >
416 >    class NoopConsumer extends CheckedIntegerAction
417 >        implements Consumer<Integer>
418 >    {
419 >        NoopConsumer(ExecutionMode m) { super(m); }
420 >        public void accept(Integer x) {
421 >            invoked();
422 >            value = x;
423 >        }
424 >    }
425 >
426 >    class IncFunction extends CheckedIntegerAction
427 >        implements Function<Integer,Integer>
428 >    {
429 >        IncFunction(ExecutionMode m) { super(m); }
430 >        public Integer apply(Integer x) {
431 >            invoked();
432 >            return value = inc(x);
433 >        }
434 >    }
435 >
436 >    // Choose non-commutative actions for better coverage
437 >    // A non-commutative function that handles and produces null values as well.
438 >    static Integer subtract(Integer x, Integer y) {
439 >        return (x == null && y == null) ? null :
440 >            ((x == null) ? 42 : x.intValue())
441 >            - ((y == null) ? 99 : y.intValue());
442      }
443 <    static final class AddAction implements BiConsumer<Integer, Integer> {
444 <        int value;
443 >
444 >    class SubtractAction extends CheckedIntegerAction
445 >        implements BiConsumer<Integer, Integer>
446 >    {
447 >        SubtractAction(ExecutionMode m) { super(m); }
448          public void accept(Integer x, Integer y) {
449 <            value = x.intValue() + y.intValue();
449 >            invoked();
450 >            value = subtract(x, y);
451          }
452      }
453 <    static final class Noop implements Runnable {
454 <        boolean ran;
455 <        public void run() { ran = true; }
453 >
454 >    class SubtractFunction extends CheckedIntegerAction
455 >        implements BiFunction<Integer, Integer, Integer>
456 >    {
457 >        SubtractFunction(ExecutionMode m) { super(m); }
458 >        public Integer apply(Integer x, Integer y) {
459 >            invoked();
460 >            return value = subtract(x, y);
461 >        }
462 >    }
463 >
464 >    class Noop extends CheckedAction implements Runnable {
465 >        Noop(ExecutionMode m) { super(m); }
466 >        public void run() {
467 >            invoked();
468 >        }
469      }
470  
471 <    static final class FailingSupplier implements Supplier<Integer> {
472 <        boolean ran;
473 <        public Integer get() { ran = true; throw new CFException(); }
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 <    static final class FailingConsumer implements Consumer<Integer> {
481 <        boolean ran;
482 <        public void accept(Integer x) { ran = true; throw new CFException(); }
480 >
481 >    class FailingConsumer extends CheckedIntegerAction
482 >        implements Consumer<Integer>
483 >    {
484 >        FailingConsumer(ExecutionMode m) { super(m); }
485 >        public void accept(Integer x) {
486 >            invoked();
487 >            value = x;
488 >            throw new CFException();
489 >        }
490      }
491 <    static final class FailingBiConsumer implements BiConsumer<Integer, Integer> {
492 <        boolean ran;
493 <        public void accept(Integer x, Integer y) { ran = true; throw new CFException(); }
491 >
492 >    class FailingBiConsumer extends CheckedIntegerAction
493 >        implements BiConsumer<Integer, Integer>
494 >    {
495 >        FailingBiConsumer(ExecutionMode m) { super(m); }
496 >        public void accept(Integer x, Integer y) {
497 >            invoked();
498 >            value = subtract(x, y);
499 >            throw new CFException();
500 >        }
501      }
502 <    static final class FailingFunction implements Function<Integer, Integer> {
503 <        boolean ran;
504 <        public Integer apply(Integer x) { ran = true; throw new CFException(); }
502 >
503 >    class FailingFunction extends CheckedIntegerAction
504 >        implements Function<Integer, Integer>
505 >    {
506 >        FailingFunction(ExecutionMode m) { super(m); }
507 >        public Integer apply(Integer x) {
508 >            invoked();
509 >            value = x;
510 >            throw new CFException();
511 >        }
512      }
513 <    static final class FailingBiFunction implements BiFunction<Integer, Integer, Integer> {
514 <        boolean ran;
515 <        public Integer apply(Integer x, Integer y) { ran = true; throw new CFException(); }
513 >
514 >    class FailingBiFunction extends CheckedIntegerAction
515 >        implements BiFunction<Integer, Integer, Integer>
516 >    {
517 >        FailingBiFunction(ExecutionMode m) { super(m); }
518 >        public Integer apply(Integer x, Integer y) {
519 >            invoked();
520 >            value = subtract(x, y);
521 >            throw new CFException();
522 >        }
523      }
524 <    static final class FailingNoop implements Runnable {
525 <        boolean ran;
526 <        public void run() { ran = true; throw new CFException(); }
524 >
525 >    class FailingRunnable extends CheckedAction implements Runnable {
526 >        FailingRunnable(ExecutionMode m) { super(m); }
527 >        public void run() {
528 >            invoked();
529 >            throw new CFException();
530 >        }
531      }
532  
533 <    static final class CompletableFutureInc implements Function<Integer, CompletableFuture<Integer>> {
533 >
534 >    class CompletableFutureInc extends CheckedIntegerAction
535 >        implements Function<Integer, CompletableFuture<Integer>>
536 >    {
537 >        CompletableFutureInc(ExecutionMode m) { super(m); }
538          public CompletableFuture<Integer> apply(Integer x) {
539 <            CompletableFuture<Integer> f = new CompletableFuture<Integer>();
540 <            f.complete(Integer.valueOf(x.intValue() + 1));
539 >            invoked();
540 >            value = x;
541 >            CompletableFuture<Integer> f = new CompletableFuture<>();
542 >            assertTrue(f.complete(inc(x)));
543              return f;
544          }
545      }
546  
547 <    static final class FailingCompletableFutureFunction implements Function<Integer, CompletableFuture<Integer>> {
548 <        boolean ran;
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 <            ran = true; throw new CFException();
552 >            invoked();
553 >            value = x;
554 >            throw new CFException();
555          }
556      }
557  
558      // Used for explicit executor tests
559      static final class ThreadExecutor implements Executor {
560 +        final AtomicInteger count = new AtomicInteger(0);
561 +        static final ThreadGroup tg = new ThreadGroup("ThreadExecutor");
562 +        static boolean startedCurrentThread() {
563 +            return Thread.currentThread().getThreadGroup() == tg;
564 +        }
565 +
566          public void execute(Runnable r) {
567 <            new Thread(r).start();
567 >            count.getAndIncrement();
568 >            new Thread(tg, r).start();
569          }
570      }
571  
572 <    static final class ExceptionToInteger implements Function<Throwable, Integer> {
573 <        public Integer apply(Throwable x) { return Integer.valueOf(3); }
574 <    }
572 >    /**
573 >     * Permits the testing of parallel code for the 3 different
574 >     * execution modes without copy/pasting all the test methods.
575 >     */
576 >    enum ExecutionMode {
577 >        DEFAULT {
578 >            public void checkExecutionMode() {
579 >                assertFalse(ThreadExecutor.startedCurrentThread());
580 >                assertNull(ForkJoinTask.getPool());
581 >            }
582 >            public CompletableFuture<Void> runAsync(Runnable a) {
583 >                throw new UnsupportedOperationException();
584 >            }
585 >            public <U> CompletableFuture<U> supplyAsync(Supplier<U> a) {
586 >                throw new UnsupportedOperationException();
587 >            }
588 >            public <T> CompletableFuture<Void> thenRun
589 >                (CompletableFuture<T> f, Runnable a) {
590 >                return f.thenRun(a);
591 >            }
592 >            public <T> CompletableFuture<Void> thenAccept
593 >                (CompletableFuture<T> f, Consumer<? super T> a) {
594 >                return f.thenAccept(a);
595 >            }
596 >            public <T,U> CompletableFuture<U> thenApply
597 >                (CompletableFuture<T> f, Function<? super T,U> a) {
598 >                return f.thenApply(a);
599 >            }
600 >            public <T,U> CompletableFuture<U> thenCompose
601 >                (CompletableFuture<T> f,
602 >                 Function<? super T,? extends CompletionStage<U>> a) {
603 >                return f.thenCompose(a);
604 >            }
605 >            public <T,U> CompletableFuture<U> handle
606 >                (CompletableFuture<T> f,
607 >                 BiFunction<? super T,Throwable,? extends U> a) {
608 >                return f.handle(a);
609 >            }
610 >            public <T> CompletableFuture<T> whenComplete
611 >                (CompletableFuture<T> f,
612 >                 BiConsumer<? super T,? super Throwable> a) {
613 >                return f.whenComplete(a);
614 >            }
615 >            public <T,U> CompletableFuture<Void> runAfterBoth
616 >                (CompletableFuture<T> f, CompletableFuture<U> g, Runnable a) {
617 >                return f.runAfterBoth(g, a);
618 >            }
619 >            public <T,U> CompletableFuture<Void> thenAcceptBoth
620 >                (CompletableFuture<T> f,
621 >                 CompletionStage<? extends U> g,
622 >                 BiConsumer<? super T,? super U> a) {
623 >                return f.thenAcceptBoth(g, a);
624 >            }
625 >            public <T,U,V> CompletableFuture<V> thenCombine
626 >                (CompletableFuture<T> f,
627 >                 CompletionStage<? extends U> g,
628 >                 BiFunction<? super T,? super U,? extends V> a) {
629 >                return f.thenCombine(g, a);
630 >            }
631 >            public <T> CompletableFuture<Void> runAfterEither
632 >                (CompletableFuture<T> f,
633 >                 CompletionStage<?> g,
634 >                 java.lang.Runnable a) {
635 >                return f.runAfterEither(g, a);
636 >            }
637 >            public <T> CompletableFuture<Void> acceptEither
638 >                (CompletableFuture<T> f,
639 >                 CompletionStage<? extends T> g,
640 >                 Consumer<? super T> a) {
641 >                return f.acceptEither(g, a);
642 >            }
643 >            public <T,U> CompletableFuture<U> applyToEither
644 >                (CompletableFuture<T> f,
645 >                 CompletionStage<? extends T> g,
646 >                 Function<? super T,U> a) {
647 >                return f.applyToEither(g, a);
648 >            }
649 >        },
650  
651 <    static final class IntegerHandler implements BiFunction<Integer, Throwable, Integer> {
652 <        public Integer apply(Integer x, Throwable t) {
653 <            return (t == null) ? two : three;
654 <        }
655 <    }
651 >        ASYNC {
652 >            public void checkExecutionMode() {
653 >                assertSame(ForkJoinPool.commonPool(),
654 >                           ForkJoinTask.getPool());
655 >            }
656 >            public CompletableFuture<Void> runAsync(Runnable a) {
657 >                return CompletableFuture.runAsync(a);
658 >            }
659 >            public <U> CompletableFuture<U> supplyAsync(Supplier<U> a) {
660 >                return CompletableFuture.supplyAsync(a);
661 >            }
662 >            public <T> CompletableFuture<Void> thenRun
663 >                (CompletableFuture<T> f, Runnable a) {
664 >                return f.thenRunAsync(a);
665 >            }
666 >            public <T> CompletableFuture<Void> thenAccept
667 >                (CompletableFuture<T> f, Consumer<? super T> a) {
668 >                return f.thenAcceptAsync(a);
669 >            }
670 >            public <T,U> CompletableFuture<U> thenApply
671 >                (CompletableFuture<T> f, Function<? super T,U> a) {
672 >                return f.thenApplyAsync(a);
673 >            }
674 >            public <T,U> CompletableFuture<U> thenCompose
675 >                (CompletableFuture<T> f,
676 >                 Function<? super T,? extends CompletionStage<U>> a) {
677 >                return f.thenComposeAsync(a);
678 >            }
679 >            public <T,U> CompletableFuture<U> handle
680 >                (CompletableFuture<T> f,
681 >                 BiFunction<? super T,Throwable,? extends U> a) {
682 >                return f.handleAsync(a);
683 >            }
684 >            public <T> CompletableFuture<T> whenComplete
685 >                (CompletableFuture<T> f,
686 >                 BiConsumer<? super T,? super Throwable> a) {
687 >                return f.whenCompleteAsync(a);
688 >            }
689 >            public <T,U> CompletableFuture<Void> runAfterBoth
690 >                (CompletableFuture<T> f, CompletableFuture<U> g, Runnable a) {
691 >                return f.runAfterBothAsync(g, a);
692 >            }
693 >            public <T,U> CompletableFuture<Void> thenAcceptBoth
694 >                (CompletableFuture<T> f,
695 >                 CompletionStage<? extends U> g,
696 >                 BiConsumer<? super T,? super U> a) {
697 >                return f.thenAcceptBothAsync(g, a);
698 >            }
699 >            public <T,U,V> CompletableFuture<V> thenCombine
700 >                (CompletableFuture<T> f,
701 >                 CompletionStage<? extends U> g,
702 >                 BiFunction<? super T,? super U,? extends V> a) {
703 >                return f.thenCombineAsync(g, a);
704 >            }
705 >            public <T> CompletableFuture<Void> runAfterEither
706 >                (CompletableFuture<T> f,
707 >                 CompletionStage<?> g,
708 >                 java.lang.Runnable a) {
709 >                return f.runAfterEitherAsync(g, a);
710 >            }
711 >            public <T> CompletableFuture<Void> acceptEither
712 >                (CompletableFuture<T> f,
713 >                 CompletionStage<? extends T> g,
714 >                 Consumer<? super T> a) {
715 >                return f.acceptEitherAsync(g, a);
716 >            }
717 >            public <T,U> CompletableFuture<U> applyToEither
718 >                (CompletableFuture<T> f,
719 >                 CompletionStage<? extends T> g,
720 >                 Function<? super T,U> a) {
721 >                return f.applyToEitherAsync(g, a);
722 >            }
723 >        },
724 >
725 >        EXECUTOR {
726 >            public void checkExecutionMode() {
727 >                assertTrue(ThreadExecutor.startedCurrentThread());
728 >            }
729 >            public CompletableFuture<Void> runAsync(Runnable a) {
730 >                return CompletableFuture.runAsync(a, new ThreadExecutor());
731 >            }
732 >            public <U> CompletableFuture<U> supplyAsync(Supplier<U> a) {
733 >                return CompletableFuture.supplyAsync(a, new ThreadExecutor());
734 >            }
735 >            public <T> CompletableFuture<Void> thenRun
736 >                (CompletableFuture<T> f, Runnable a) {
737 >                return f.thenRunAsync(a, new ThreadExecutor());
738 >            }
739 >            public <T> CompletableFuture<Void> thenAccept
740 >                (CompletableFuture<T> f, Consumer<? super T> a) {
741 >                return f.thenAcceptAsync(a, new ThreadExecutor());
742 >            }
743 >            public <T,U> CompletableFuture<U> thenApply
744 >                (CompletableFuture<T> f, Function<? super T,U> a) {
745 >                return f.thenApplyAsync(a, new ThreadExecutor());
746 >            }
747 >            public <T,U> CompletableFuture<U> thenCompose
748 >                (CompletableFuture<T> f,
749 >                 Function<? super T,? extends CompletionStage<U>> a) {
750 >                return f.thenComposeAsync(a, new ThreadExecutor());
751 >            }
752 >            public <T,U> CompletableFuture<U> handle
753 >                (CompletableFuture<T> f,
754 >                 BiFunction<? super T,Throwable,? extends U> a) {
755 >                return f.handleAsync(a, new ThreadExecutor());
756 >            }
757 >            public <T> CompletableFuture<T> whenComplete
758 >                (CompletableFuture<T> f,
759 >                 BiConsumer<? super T,? super Throwable> a) {
760 >                return f.whenCompleteAsync(a, new ThreadExecutor());
761 >            }
762 >            public <T,U> CompletableFuture<Void> runAfterBoth
763 >                (CompletableFuture<T> f, CompletableFuture<U> g, Runnable a) {
764 >                return f.runAfterBothAsync(g, a, new ThreadExecutor());
765 >            }
766 >            public <T,U> CompletableFuture<Void> thenAcceptBoth
767 >                (CompletableFuture<T> f,
768 >                 CompletionStage<? extends U> g,
769 >                 BiConsumer<? super T,? super U> a) {
770 >                return f.thenAcceptBothAsync(g, a, new ThreadExecutor());
771 >            }
772 >            public <T,U,V> CompletableFuture<V> thenCombine
773 >                (CompletableFuture<T> f,
774 >                 CompletionStage<? extends U> g,
775 >                 BiFunction<? super T,? super U,? extends V> a) {
776 >                return f.thenCombineAsync(g, a, new ThreadExecutor());
777 >            }
778 >            public <T> CompletableFuture<Void> runAfterEither
779 >                (CompletableFuture<T> f,
780 >                 CompletionStage<?> g,
781 >                 java.lang.Runnable a) {
782 >                return f.runAfterEitherAsync(g, a, new ThreadExecutor());
783 >            }
784 >            public <T> CompletableFuture<Void> acceptEither
785 >                (CompletableFuture<T> f,
786 >                 CompletionStage<? extends T> g,
787 >                 Consumer<? super T> a) {
788 >                return f.acceptEitherAsync(g, a, new ThreadExecutor());
789 >            }
790 >            public <T,U> CompletableFuture<U> applyToEither
791 >                (CompletableFuture<T> f,
792 >                 CompletionStage<? extends T> g,
793 >                 Function<? super T,U> a) {
794 >                return f.applyToEitherAsync(g, a, new ThreadExecutor());
795 >            }
796 >        };
797  
798 +        public abstract void checkExecutionMode();
799 +        public abstract CompletableFuture<Void> runAsync(Runnable a);
800 +        public abstract <U> CompletableFuture<U> supplyAsync(Supplier<U> a);
801 +        public abstract <T> CompletableFuture<Void> thenRun
802 +            (CompletableFuture<T> f, Runnable a);
803 +        public abstract <T> CompletableFuture<Void> thenAccept
804 +            (CompletableFuture<T> f, Consumer<? super T> a);
805 +        public abstract <T,U> CompletableFuture<U> thenApply
806 +            (CompletableFuture<T> f, Function<? super T,U> a);
807 +        public abstract <T,U> CompletableFuture<U> thenCompose
808 +            (CompletableFuture<T> f,
809 +             Function<? super T,? extends CompletionStage<U>> a);
810 +        public abstract <T,U> CompletableFuture<U> handle
811 +            (CompletableFuture<T> f,
812 +             BiFunction<? super T,Throwable,? extends U> a);
813 +        public abstract <T> CompletableFuture<T> whenComplete
814 +            (CompletableFuture<T> f,
815 +             BiConsumer<? super T,? super Throwable> a);
816 +        public abstract <T,U> CompletableFuture<Void> runAfterBoth
817 +            (CompletableFuture<T> f, CompletableFuture<U> g, Runnable a);
818 +        public abstract <T,U> CompletableFuture<Void> thenAcceptBoth
819 +            (CompletableFuture<T> f,
820 +             CompletionStage<? extends U> g,
821 +             BiConsumer<? super T,? super U> a);
822 +        public abstract <T,U,V> CompletableFuture<V> thenCombine
823 +            (CompletableFuture<T> f,
824 +             CompletionStage<? extends U> g,
825 +             BiFunction<? super T,? super U,? extends V> a);
826 +        public abstract <T> CompletableFuture<Void> runAfterEither
827 +            (CompletableFuture<T> f,
828 +             CompletionStage<?> g,
829 +             java.lang.Runnable a);
830 +        public abstract <T> CompletableFuture<Void> acceptEither
831 +            (CompletableFuture<T> f,
832 +             CompletionStage<? extends T> g,
833 +             Consumer<? super T> a);
834 +        public abstract <T,U> CompletableFuture<U> applyToEither
835 +            (CompletableFuture<T> f,
836 +             CompletionStage<? extends T> g,
837 +             Function<? super T,U> a);
838 +    }
839 +
840 +    /**
841 +     * exceptionally action is not invoked when source completes
842 +     * normally, and source result is propagated
843 +     */
844 +    public void testExceptionally_normalCompletion() {
845 +        for (boolean createIncomplete : new boolean[] { true, false })
846 +        for (Integer v1 : new Integer[] { 1, null })
847 +    {
848 +        final AtomicInteger a = new AtomicInteger(0);
849 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
850 +        if (!createIncomplete) assertTrue(f.complete(v1));
851 +        final CompletableFuture<Integer> g = f.exceptionally
852 +            ((Throwable t) -> {
853 +                // Should not be called
854 +                a.getAndIncrement();
855 +                throw new AssertionError();
856 +            });
857 +        if (createIncomplete) assertTrue(f.complete(v1));
858 +
859 +        checkCompletedNormally(g, v1);
860 +        checkCompletedNormally(f, v1);
861 +        assertEquals(0, a.get());
862 +    }}
863  
864      /**
865       * exceptionally action completes with function value on source
866 <     * exception;  otherwise with source value
866 >     * exception
867       */
868 <    public void testExceptionally() {
869 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
870 <        ExceptionToInteger r = new ExceptionToInteger();
871 <        CompletableFuture<Integer> g = f.exceptionally(r);
872 <        f.completeExceptionally(new CFException());
873 <        checkCompletedNormally(g, three);
868 >    public void testExceptionally_exceptionalCompletion() {
869 >        for (boolean createIncomplete : new boolean[] { true, false })
870 >        for (Integer v1 : new Integer[] { 1, null })
871 >    {
872 >        final AtomicInteger a = new AtomicInteger(0);
873 >        final CFException ex = new CFException();
874 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
875 >        if (!createIncomplete) f.completeExceptionally(ex);
876 >        final CompletableFuture<Integer> g = f.exceptionally
877 >            ((Throwable t) -> {
878 >                ExecutionMode.DEFAULT.checkExecutionMode();
879 >                threadAssertSame(t, ex);
880 >                a.getAndIncrement();
881 >                return v1;
882 >            });
883 >        if (createIncomplete) f.completeExceptionally(ex);
884 >
885 >        checkCompletedNormally(g, v1);
886 >        assertEquals(1, a.get());
887 >    }}
888 >
889 >    public void testExceptionally_exceptionalCompletionActionFailed() {
890 >        for (boolean createIncomplete : new boolean[] { true, false })
891 >        for (Integer v1 : new Integer[] { 1, null })
892 >    {
893 >        final AtomicInteger a = new AtomicInteger(0);
894 >        final CFException ex1 = new CFException();
895 >        final CFException ex2 = new CFException();
896 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
897 >        if (!createIncomplete) f.completeExceptionally(ex1);
898 >        final CompletableFuture<Integer> g = f.exceptionally
899 >            ((Throwable t) -> {
900 >                ExecutionMode.DEFAULT.checkExecutionMode();
901 >                threadAssertSame(t, ex1);
902 >                a.getAndIncrement();
903 >                throw ex2;
904 >            });
905 >        if (createIncomplete) f.completeExceptionally(ex1);
906 >
907 >        checkCompletedWithWrappedException(g, ex2);
908 >        assertEquals(1, a.get());
909 >    }}
910 >
911 >    /**
912 >     * whenComplete action executes on normal completion, propagating
913 >     * source result.
914 >     */
915 >    public void testWhenComplete_normalCompletion1() {
916 >        for (ExecutionMode m : ExecutionMode.values())
917 >        for (boolean createIncomplete : new boolean[] { true, false })
918 >        for (Integer v1 : new Integer[] { 1, null })
919 >    {
920 >        final AtomicInteger a = new AtomicInteger(0);
921 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
922 >        if (!createIncomplete) assertTrue(f.complete(v1));
923 >        final CompletableFuture<Integer> g = m.whenComplete
924 >            (f,
925 >             (Integer x, Throwable t) -> {
926 >                m.checkExecutionMode();
927 >                threadAssertSame(x, v1);
928 >                threadAssertNull(t);
929 >                a.getAndIncrement();
930 >            });
931 >        if (createIncomplete) assertTrue(f.complete(v1));
932 >
933 >        checkCompletedNormally(g, v1);
934 >        checkCompletedNormally(f, v1);
935 >        assertEquals(1, a.get());
936 >    }}
937 >
938 >    /**
939 >     * whenComplete action executes on exceptional completion, propagating
940 >     * source result.
941 >     */
942 >    public void testWhenComplete_exceptionalCompletion() {
943 >        for (ExecutionMode m : ExecutionMode.values())
944 >        for (boolean createIncomplete : new boolean[] { true, false })
945 >        for (Integer v1 : new Integer[] { 1, null })
946 >    {
947 >        final AtomicInteger a = new AtomicInteger(0);
948 >        final CFException ex = new CFException();
949 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
950 >        if (!createIncomplete) f.completeExceptionally(ex);
951 >        final CompletableFuture<Integer> g = m.whenComplete
952 >            (f,
953 >             (Integer x, Throwable t) -> {
954 >                m.checkExecutionMode();
955 >                threadAssertNull(x);
956 >                threadAssertSame(t, ex);
957 >                a.getAndIncrement();
958 >            });
959 >        if (createIncomplete) f.completeExceptionally(ex);
960 >
961 >        checkCompletedWithWrappedException(g, ex);
962 >        checkCompletedExceptionally(f, ex);
963 >        assertEquals(1, a.get());
964 >    }}
965 >
966 >    /**
967 >     * whenComplete action executes on cancelled source, propagating
968 >     * CancellationException.
969 >     */
970 >    public void testWhenComplete_sourceCancelled() {
971 >        for (ExecutionMode m : ExecutionMode.values())
972 >        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
973 >        for (boolean createIncomplete : new boolean[] { true, false })
974 >    {
975 >        final AtomicInteger a = new AtomicInteger(0);
976 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
977 >        if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
978 >        final CompletableFuture<Integer> g = m.whenComplete
979 >            (f,
980 >             (Integer x, Throwable t) -> {
981 >                m.checkExecutionMode();
982 >                threadAssertNull(x);
983 >                threadAssertTrue(t instanceof CancellationException);
984 >                a.getAndIncrement();
985 >            });
986 >        if (createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
987  
988 <        f = new CompletableFuture<Integer>();
989 <        r = new ExceptionToInteger();
990 <        g = f.exceptionally(r);
991 <        f.complete(one);
379 <        checkCompletedNormally(g, one);
380 <    }
988 >        checkCompletedWithWrappedCancellationException(g);
989 >        checkCancelled(f);
990 >        assertEquals(1, a.get());
991 >    }}
992  
993      /**
994 <     * handle action completes normally with function value on either
995 <     * normal or exceptional completion of source
994 >     * If a whenComplete action throws an exception when triggered by
995 >     * a normal completion, it completes exceptionally
996       */
997 <    public void testHandle() {
998 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
999 <        IntegerHandler r = new IntegerHandler();
1000 <        CompletableFuture<Integer> g = f.handle(r);
1001 <        f.completeExceptionally(new CFException());
1002 <        checkCompletedNormally(g, three);
997 >    public void testWhenComplete_actionFailed() {
998 >        for (boolean createIncomplete : new boolean[] { true, false })
999 >        for (ExecutionMode m : ExecutionMode.values())
1000 >        for (Integer v1 : new Integer[] { 1, null })
1001 >    {
1002 >        final AtomicInteger a = new AtomicInteger(0);
1003 >        final CFException ex = new CFException();
1004 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1005 >        if (!createIncomplete) assertTrue(f.complete(v1));
1006 >        final CompletableFuture<Integer> g = m.whenComplete
1007 >            (f,
1008 >             (Integer x, Throwable t) -> {
1009 >                m.checkExecutionMode();
1010 >                threadAssertSame(x, v1);
1011 >                threadAssertNull(t);
1012 >                a.getAndIncrement();
1013 >                throw ex;
1014 >            });
1015 >        if (createIncomplete) assertTrue(f.complete(v1));
1016 >
1017 >        checkCompletedWithWrappedException(g, ex);
1018 >        checkCompletedNormally(f, v1);
1019 >        assertEquals(1, a.get());
1020 >    }}
1021 >
1022 >    /**
1023 >     * If a whenComplete action throws an exception when triggered by
1024 >     * a source completion that also throws an exception, the source
1025 >     * exception takes precedence.
1026 >     */
1027 >    public void testWhenComplete_actionFailedSourceFailed() {
1028 >        for (boolean createIncomplete : new boolean[] { true, false })
1029 >        for (ExecutionMode m : ExecutionMode.values())
1030 >        for (Integer v1 : new Integer[] { 1, null })
1031 >    {
1032 >        final AtomicInteger a = new AtomicInteger(0);
1033 >        final CFException ex1 = new CFException();
1034 >        final CFException ex2 = new CFException();
1035 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1036 >
1037 >        if (!createIncomplete) f.completeExceptionally(ex1);
1038 >        final CompletableFuture<Integer> g = m.whenComplete
1039 >            (f,
1040 >             (Integer x, Throwable t) -> {
1041 >                m.checkExecutionMode();
1042 >                threadAssertSame(t, ex1);
1043 >                threadAssertNull(x);
1044 >                a.getAndIncrement();
1045 >                throw ex2;
1046 >            });
1047 >        if (createIncomplete) f.completeExceptionally(ex1);
1048 >
1049 >        checkCompletedWithWrappedException(g, ex1);
1050 >        checkCompletedExceptionally(f, ex1);
1051 >        assertEquals(1, a.get());
1052 >    }}
1053 >
1054 >    /**
1055 >     * handle action completes normally with function value on normal
1056 >     * completion of source
1057 >     */
1058 >    public void testHandle_normalCompletion() {
1059 >        for (ExecutionMode m : ExecutionMode.values())
1060 >        for (boolean createIncomplete : new boolean[] { true, false })
1061 >        for (Integer v1 : new Integer[] { 1, null })
1062 >    {
1063 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1064 >        final AtomicInteger a = new AtomicInteger(0);
1065 >        if (!createIncomplete) assertTrue(f.complete(v1));
1066 >        final CompletableFuture<Integer> g = m.handle
1067 >            (f,
1068 >             (Integer x, Throwable t) -> {
1069 >                m.checkExecutionMode();
1070 >                threadAssertSame(x, v1);
1071 >                threadAssertNull(t);
1072 >                a.getAndIncrement();
1073 >                return inc(v1);
1074 >            });
1075 >        if (createIncomplete) assertTrue(f.complete(v1));
1076 >
1077 >        checkCompletedNormally(g, inc(v1));
1078 >        checkCompletedNormally(f, v1);
1079 >        assertEquals(1, a.get());
1080 >    }}
1081  
1082 <        f = new CompletableFuture<Integer>();
1083 <        r = new IntegerHandler();
1084 <        g = f.handle(r);
1085 <        f.complete(one);
1086 <        checkCompletedNormally(g, two);
1087 <    }
1082 >    /**
1083 >     * handle action completes normally with function value on
1084 >     * exceptional completion of source
1085 >     */
1086 >    public void testHandle_exceptionalCompletion() {
1087 >        for (ExecutionMode m : ExecutionMode.values())
1088 >        for (boolean createIncomplete : new boolean[] { true, false })
1089 >        for (Integer v1 : new Integer[] { 1, null })
1090 >    {
1091 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1092 >        final AtomicInteger a = new AtomicInteger(0);
1093 >        final CFException ex = new CFException();
1094 >        if (!createIncomplete) f.completeExceptionally(ex);
1095 >        final CompletableFuture<Integer> g = m.handle
1096 >            (f,
1097 >             (Integer x, Throwable t) -> {
1098 >                m.checkExecutionMode();
1099 >                threadAssertNull(x);
1100 >                threadAssertSame(t, ex);
1101 >                a.getAndIncrement();
1102 >                return v1;
1103 >            });
1104 >        if (createIncomplete) f.completeExceptionally(ex);
1105 >
1106 >        checkCompletedNormally(g, v1);
1107 >        checkCompletedExceptionally(f, ex);
1108 >        assertEquals(1, a.get());
1109 >    }}
1110 >
1111 >    /**
1112 >     * handle action completes normally with function value on
1113 >     * cancelled source
1114 >     */
1115 >    public void testHandle_sourceCancelled() {
1116 >        for (ExecutionMode m : ExecutionMode.values())
1117 >        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1118 >        for (boolean createIncomplete : new boolean[] { true, false })
1119 >        for (Integer v1 : new Integer[] { 1, null })
1120 >    {
1121 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1122 >        final AtomicInteger a = new AtomicInteger(0);
1123 >        if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
1124 >        final CompletableFuture<Integer> g = m.handle
1125 >            (f,
1126 >             (Integer x, Throwable t) -> {
1127 >                m.checkExecutionMode();
1128 >                threadAssertNull(x);
1129 >                threadAssertTrue(t instanceof CancellationException);
1130 >                a.getAndIncrement();
1131 >                return v1;
1132 >            });
1133 >        if (createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
1134 >
1135 >        checkCompletedNormally(g, v1);
1136 >        checkCancelled(f);
1137 >        assertEquals(1, a.get());
1138 >    }}
1139  
1140      /**
1141 <     * runAsync completes after running Runnable
1141 >     * handle result completes exceptionally if action does
1142       */
1143 <    public void testRunAsync() {
1144 <        Noop r = new Noop();
1145 <        CompletableFuture<Void> f = CompletableFuture.runAsync(r);
1146 <        assertNull(f.join());
1147 <        assertTrue(r.ran);
1148 <        checkCompletedNormally(f, null);
1149 <    }
1143 >    public void testHandle_sourceFailedActionFailed() {
1144 >        for (ExecutionMode m : ExecutionMode.values())
1145 >        for (boolean createIncomplete : new boolean[] { true, false })
1146 >    {
1147 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1148 >        final AtomicInteger a = new AtomicInteger(0);
1149 >        final CFException ex1 = new CFException();
1150 >        final CFException ex2 = new CFException();
1151 >        if (!createIncomplete) f.completeExceptionally(ex1);
1152 >        final CompletableFuture<Integer> g = m.handle
1153 >            (f,
1154 >             (Integer x, Throwable t) -> {
1155 >                m.checkExecutionMode();
1156 >                threadAssertNull(x);
1157 >                threadAssertSame(ex1, t);
1158 >                a.getAndIncrement();
1159 >                throw ex2;
1160 >            });
1161 >        if (createIncomplete) f.completeExceptionally(ex1);
1162 >
1163 >        checkCompletedWithWrappedException(g, ex2);
1164 >        checkCompletedExceptionally(f, ex1);
1165 >        assertEquals(1, a.get());
1166 >    }}
1167 >
1168 >    public void testHandle_sourceCompletedNormallyActionFailed() {
1169 >        for (ExecutionMode m : ExecutionMode.values())
1170 >        for (boolean createIncomplete : new boolean[] { true, false })
1171 >        for (Integer v1 : new Integer[] { 1, null })
1172 >    {
1173 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1174 >        final AtomicInteger a = new AtomicInteger(0);
1175 >        final CFException ex = new CFException();
1176 >        if (!createIncomplete) assertTrue(f.complete(v1));
1177 >        final CompletableFuture<Integer> g = m.handle
1178 >            (f,
1179 >             (Integer x, Throwable t) -> {
1180 >                m.checkExecutionMode();
1181 >                threadAssertSame(x, v1);
1182 >                threadAssertNull(t);
1183 >                a.getAndIncrement();
1184 >                throw ex;
1185 >            });
1186 >        if (createIncomplete) assertTrue(f.complete(v1));
1187 >
1188 >        checkCompletedWithWrappedException(g, ex);
1189 >        checkCompletedNormally(f, v1);
1190 >        assertEquals(1, a.get());
1191 >    }}
1192  
1193      /**
1194 <     * runAsync with executor completes after running Runnable
1194 >     * runAsync completes after running Runnable
1195       */
1196 <    public void testRunAsync2() {
1197 <        Noop r = new Noop();
1198 <        CompletableFuture<Void> f = CompletableFuture.runAsync(r, new ThreadExecutor());
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());
418        assertTrue(r.ran);
1206          checkCompletedNormally(f, null);
1207 <    }
1207 >        r.assertInvoked();
1208 >    }}
1209  
1210      /**
1211       * failing runAsync completes exceptionally after running Runnable
1212       */
1213 <    public void testRunAsync3() {
1214 <        FailingNoop r = new FailingNoop();
1215 <        CompletableFuture<Void> f = CompletableFuture.runAsync(r);
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 <        assertTrue(r.ran);
1224 <    }
1223 >        r.assertInvoked();
1224 >    }}
1225  
1226      /**
1227       * supplyAsync completes with result of supplier
1228       */
1229 <    public void testSupplyAsync() {
1230 <        CompletableFuture<Integer> f = CompletableFuture.supplyAsync(supplyOne);
1231 <        assertEquals(f.join(), one);
1232 <    }
1233 <
1234 <    /**
1235 <     * supplyAsync with executor completes with result of supplier
1236 <     */
1237 <    public void testSupplyAsync2() {
1238 <        CompletableFuture<Integer> f = CompletableFuture.supplyAsync(supplyOne, new ThreadExecutor());
1239 <        assertEquals(f.join(), one);
1240 <    }
1229 >    public void testSupplyAsync_normalCompletion() {
1230 >        ExecutionMode[] executionModes = {
1231 >            ExecutionMode.ASYNC,
1232 >            ExecutionMode.EXECUTOR,
1233 >        };
1234 >        for (ExecutionMode m : executionModes)
1235 >        for (Integer v1 : new Integer[] { 1, null })
1236 >    {
1237 >        final IntegerSupplier r = new IntegerSupplier(m, v1);
1238 >        final CompletableFuture<Integer> f = m.supplyAsync(r);
1239 >        assertSame(v1, f.join());
1240 >        checkCompletedNormally(f, v1);
1241 >        r.assertInvoked();
1242 >    }}
1243  
1244      /**
1245       * Failing supplyAsync completes exceptionally
1246       */
1247 <    public void testSupplyAsync3() {
1248 <        FailingSupplier r = new FailingSupplier();
1249 <        CompletableFuture<Integer> f = CompletableFuture.supplyAsync(r);
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 <        assertTrue(r.ran);
1258 <    }
1257 >        r.assertInvoked();
1258 >    }}
1259  
1260      // seq completion methods
1261  
1262      /**
1263       * thenRun result completes normally after normal completion of source
1264       */
1265 <    public void testThenRun() {
1266 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1267 <        Noop r = new Noop();
1268 <        CompletableFuture<Void> g = f.thenRun(r);
1269 <        f.complete(null);
1270 <        checkCompletedNormally(g, null);
1271 <        // reordered version
1272 <        f = new CompletableFuture<Integer>();
1273 <        f.complete(null);
1274 <        r = new Noop();
1275 <        g = f.thenRun(r);
1276 <        checkCompletedNormally(g, null);
1277 <    }
1265 >    public void testThenRun_normalCompletion() {
1266 >        for (ExecutionMode m : ExecutionMode.values())
1267 >        for (Integer v1 : new Integer[] { 1, null })
1268 >    {
1269 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1270 >        final Noop[] rs = new Noop[6];
1271 >        for (int i = 0; i < rs.length; i++) rs[i] = new Noop(m);
1272 >
1273 >        final CompletableFuture<Void> h0 = m.thenRun(f, rs[0]);
1274 >        final CompletableFuture<Void> h1 = m.runAfterBoth(f, f, rs[1]);
1275 >        final CompletableFuture<Void> h2 = m.runAfterEither(f, f, rs[2]);
1276 >        checkIncomplete(h0);
1277 >        checkIncomplete(h1);
1278 >        checkIncomplete(h2);
1279 >        assertTrue(f.complete(v1));
1280 >        final CompletableFuture<Void> h3 = m.thenRun(f, rs[3]);
1281 >        final CompletableFuture<Void> h4 = m.runAfterBoth(f, f, rs[4]);
1282 >        final CompletableFuture<Void> h5 = m.runAfterEither(f, f, rs[5]);
1283 >
1284 >        checkCompletedNormally(h0, null);
1285 >        checkCompletedNormally(h1, null);
1286 >        checkCompletedNormally(h2, null);
1287 >        checkCompletedNormally(h3, null);
1288 >        checkCompletedNormally(h4, null);
1289 >        checkCompletedNormally(h5, null);
1290 >        checkCompletedNormally(f, v1);
1291 >        for (Noop r : rs) r.assertInvoked();
1292 >    }}
1293  
1294      /**
1295       * thenRun result completes exceptionally after exceptional
1296       * completion of source
1297       */
1298 <    public void testThenRun2() {
1299 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1300 <        Noop r = new Noop();
1301 <        CompletableFuture<Void> g = f.thenRun(r);
1302 <        f.completeExceptionally(new CFException());
1303 <        checkCompletedWithWrappedCFException(g);
1304 <    }
1298 >    public void testThenRun_exceptionalCompletion() {
1299 >        for (ExecutionMode m : ExecutionMode.values())
1300 >    {
1301 >        final CFException ex = new CFException();
1302 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1303 >        final Noop[] rs = new Noop[6];
1304 >        for (int i = 0; i < rs.length; i++) rs[i] = new Noop(m);
1305 >
1306 >        final CompletableFuture<Void> h0 = m.thenRun(f, rs[0]);
1307 >        final CompletableFuture<Void> h1 = m.runAfterBoth(f, f, rs[1]);
1308 >        final CompletableFuture<Void> h2 = m.runAfterEither(f, f, rs[2]);
1309 >        checkIncomplete(h0);
1310 >        checkIncomplete(h1);
1311 >        checkIncomplete(h2);
1312 >        assertTrue(f.completeExceptionally(ex));
1313 >        final CompletableFuture<Void> h3 = m.thenRun(f, rs[3]);
1314 >        final CompletableFuture<Void> h4 = m.runAfterBoth(f, f, rs[4]);
1315 >        final CompletableFuture<Void> h5 = m.runAfterEither(f, f, rs[5]);
1316 >
1317 >        checkCompletedWithWrappedException(h0, ex);
1318 >        checkCompletedWithWrappedException(h1, ex);
1319 >        checkCompletedWithWrappedException(h2, ex);
1320 >        checkCompletedWithWrappedException(h3, ex);
1321 >        checkCompletedWithWrappedException(h4, ex);
1322 >        checkCompletedWithWrappedException(h5, ex);
1323 >        checkCompletedExceptionally(f, ex);
1324 >        for (Noop r : rs) r.assertNotInvoked();
1325 >    }}
1326  
1327      /**
1328 <     * thenRun result completes exceptionally if action does
1328 >     * thenRun result completes exceptionally if source cancelled
1329       */
1330 <    public void testThenRun3() {
1331 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1332 <        FailingNoop r = new FailingNoop();
1333 <        CompletableFuture<Void> g = f.thenRun(r);
1334 <        f.complete(null);
1335 <        checkCompletedWithWrappedCFException(g);
1336 <    }
1330 >    public void testThenRun_sourceCancelled() {
1331 >        for (ExecutionMode m : ExecutionMode.values())
1332 >        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1333 >    {
1334 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1335 >        final Noop[] rs = new Noop[6];
1336 >        for (int i = 0; i < rs.length; i++) rs[i] = new Noop(m);
1337 >
1338 >        final CompletableFuture<Void> h0 = m.thenRun(f, rs[0]);
1339 >        final CompletableFuture<Void> h1 = m.runAfterBoth(f, f, rs[1]);
1340 >        final CompletableFuture<Void> h2 = m.runAfterEither(f, f, rs[2]);
1341 >        checkIncomplete(h0);
1342 >        checkIncomplete(h1);
1343 >        checkIncomplete(h2);
1344 >        assertTrue(f.cancel(mayInterruptIfRunning));
1345 >        final CompletableFuture<Void> h3 = m.thenRun(f, rs[3]);
1346 >        final CompletableFuture<Void> h4 = m.runAfterBoth(f, f, rs[4]);
1347 >        final CompletableFuture<Void> h5 = m.runAfterEither(f, f, rs[5]);
1348 >
1349 >        checkCompletedWithWrappedCancellationException(h0);
1350 >        checkCompletedWithWrappedCancellationException(h1);
1351 >        checkCompletedWithWrappedCancellationException(h2);
1352 >        checkCompletedWithWrappedCancellationException(h3);
1353 >        checkCompletedWithWrappedCancellationException(h4);
1354 >        checkCompletedWithWrappedCancellationException(h5);
1355 >        checkCancelled(f);
1356 >        for (Noop r : rs) r.assertNotInvoked();
1357 >    }}
1358  
1359      /**
1360 <     * thenRun result completes exceptionally if source cancelled
1360 >     * thenRun result completes exceptionally if action does
1361       */
1362 <    public void testThenRun4() {
1363 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1364 <        Noop r = new Noop();
1365 <        CompletableFuture<Void> g = f.thenRun(r);
1366 <        assertTrue(f.cancel(true));
1367 <        checkCompletedWithWrappedCancellationException(g);
1368 <    }
1362 >    public void testThenRun_actionFailed() {
1363 >        for (ExecutionMode m : ExecutionMode.values())
1364 >        for (Integer v1 : new Integer[] { 1, null })
1365 >    {
1366 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1367 >        final FailingRunnable[] rs = new FailingRunnable[6];
1368 >        for (int i = 0; i < rs.length; i++) rs[i] = new FailingRunnable(m);
1369 >
1370 >        final CompletableFuture<Void> h0 = m.thenRun(f, rs[0]);
1371 >        final CompletableFuture<Void> h1 = m.runAfterBoth(f, f, rs[1]);
1372 >        final CompletableFuture<Void> h2 = m.runAfterEither(f, f, rs[2]);
1373 >        assertTrue(f.complete(v1));
1374 >        final CompletableFuture<Void> h3 = m.thenRun(f, rs[3]);
1375 >        final CompletableFuture<Void> h4 = m.runAfterBoth(f, f, rs[4]);
1376 >        final CompletableFuture<Void> h5 = m.runAfterEither(f, f, rs[5]);
1377 >
1378 >        checkCompletedWithWrappedCFException(h0);
1379 >        checkCompletedWithWrappedCFException(h1);
1380 >        checkCompletedWithWrappedCFException(h2);
1381 >        checkCompletedWithWrappedCFException(h3);
1382 >        checkCompletedWithWrappedCFException(h4);
1383 >        checkCompletedWithWrappedCFException(h5);
1384 >        checkCompletedNormally(f, v1);
1385 >    }}
1386  
1387      /**
1388       * thenApply result completes normally after normal completion of source
1389       */
1390 <    public void testThenApply() {
1391 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1392 <        CompletableFuture<Integer> g = f.thenApply(inc);
1393 <        f.complete(one);
1394 <        checkCompletedNormally(g, two);
1395 <    }
1390 >    public void testThenApply_normalCompletion() {
1391 >        for (ExecutionMode m : ExecutionMode.values())
1392 >        for (Integer v1 : new Integer[] { 1, null })
1393 >    {
1394 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1395 >        final IncFunction[] rs = new IncFunction[4];
1396 >        for (int i = 0; i < rs.length; i++) rs[i] = new IncFunction(m);
1397 >
1398 >        final CompletableFuture<Integer> h0 = m.thenApply(f, rs[0]);
1399 >        final CompletableFuture<Integer> h1 = m.applyToEither(f, f, rs[1]);
1400 >        checkIncomplete(h0);
1401 >        checkIncomplete(h1);
1402 >        assertTrue(f.complete(v1));
1403 >        final CompletableFuture<Integer> h2 = m.thenApply(f, rs[2]);
1404 >        final CompletableFuture<Integer> h3 = m.applyToEither(f, f, rs[3]);
1405 >
1406 >        checkCompletedNormally(h0, inc(v1));
1407 >        checkCompletedNormally(h1, inc(v1));
1408 >        checkCompletedNormally(h2, inc(v1));
1409 >        checkCompletedNormally(h3, inc(v1));
1410 >        checkCompletedNormally(f, v1);
1411 >        for (IncFunction r : rs) r.assertValue(inc(v1));
1412 >    }}
1413  
1414      /**
1415       * thenApply result completes exceptionally after exceptional
1416       * completion of source
1417       */
1418 <    public void testThenApply2() {
1419 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1420 <        CompletableFuture<Integer> g = f.thenApply(inc);
1421 <        f.completeExceptionally(new CFException());
1422 <        checkCompletedWithWrappedCFException(g);
1423 <    }
1418 >    public void testThenApply_exceptionalCompletion() {
1419 >        for (ExecutionMode m : ExecutionMode.values())
1420 >    {
1421 >        final CFException ex = new CFException();
1422 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1423 >        final IncFunction[] rs = new IncFunction[4];
1424 >        for (int i = 0; i < rs.length; i++) rs[i] = new IncFunction(m);
1425 >
1426 >        final CompletableFuture<Integer> h0 = m.thenApply(f, rs[0]);
1427 >        final CompletableFuture<Integer> h1 = m.applyToEither(f, f, rs[1]);
1428 >        assertTrue(f.completeExceptionally(ex));
1429 >        final CompletableFuture<Integer> h2 = m.thenApply(f, rs[2]);
1430 >        final CompletableFuture<Integer> h3 = m.applyToEither(f, f, rs[3]);
1431 >
1432 >        checkCompletedWithWrappedException(h0, ex);
1433 >        checkCompletedWithWrappedException(h1, ex);
1434 >        checkCompletedWithWrappedException(h2, ex);
1435 >        checkCompletedWithWrappedException(h3, ex);
1436 >        checkCompletedExceptionally(f, ex);
1437 >        for (IncFunction r : rs) r.assertNotInvoked();
1438 >    }}
1439  
1440      /**
1441 <     * thenApply result completes exceptionally if action does
1441 >     * thenApply result completes exceptionally if source cancelled
1442       */
1443 <    public void testThenApply3() {
1444 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1445 <        CompletableFuture<Integer> g = f.thenApply(new FailingFunction());
1446 <        f.complete(one);
1447 <        checkCompletedWithWrappedCFException(g);
1448 <    }
1443 >    public void testThenApply_sourceCancelled() {
1444 >        for (ExecutionMode m : ExecutionMode.values())
1445 >        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1446 >    {
1447 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1448 >        final IncFunction[] rs = new IncFunction[4];
1449 >        for (int i = 0; i < rs.length; i++) rs[i] = new IncFunction(m);
1450 >
1451 >        final CompletableFuture<Integer> h0 = m.thenApply(f, rs[0]);
1452 >        final CompletableFuture<Integer> h1 = m.applyToEither(f, f, rs[1]);
1453 >        assertTrue(f.cancel(mayInterruptIfRunning));
1454 >        final CompletableFuture<Integer> h2 = m.thenApply(f, rs[2]);
1455 >        final CompletableFuture<Integer> h3 = m.applyToEither(f, f, rs[3]);
1456 >
1457 >        checkCompletedWithWrappedCancellationException(h0);
1458 >        checkCompletedWithWrappedCancellationException(h1);
1459 >        checkCompletedWithWrappedCancellationException(h2);
1460 >        checkCompletedWithWrappedCancellationException(h3);
1461 >        checkCancelled(f);
1462 >        for (IncFunction r : rs) r.assertNotInvoked();
1463 >    }}
1464  
1465      /**
1466 <     * thenApply result completes exceptionally if source cancelled
1466 >     * thenApply result completes exceptionally if action does
1467       */
1468 <    public void testThenApply4() {
1469 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1470 <        CompletableFuture<Integer> g = f.thenApply(inc);
1471 <        assertTrue(f.cancel(true));
1472 <        checkCompletedWithWrappedCancellationException(g);
1473 <    }
1468 >    public void testThenApply_actionFailed() {
1469 >        for (ExecutionMode m : ExecutionMode.values())
1470 >        for (Integer v1 : new Integer[] { 1, null })
1471 >    {
1472 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1473 >        final FailingFunction[] rs = new FailingFunction[4];
1474 >        for (int i = 0; i < rs.length; i++) rs[i] = new FailingFunction(m);
1475 >
1476 >        final CompletableFuture<Integer> h0 = m.thenApply(f, rs[0]);
1477 >        final CompletableFuture<Integer> h1 = m.applyToEither(f, f, rs[1]);
1478 >        assertTrue(f.complete(v1));
1479 >        final CompletableFuture<Integer> h2 = m.thenApply(f, rs[2]);
1480 >        final CompletableFuture<Integer> h3 = m.applyToEither(f, f, rs[3]);
1481 >
1482 >        checkCompletedWithWrappedCFException(h0);
1483 >        checkCompletedWithWrappedCFException(h1);
1484 >        checkCompletedWithWrappedCFException(h2);
1485 >        checkCompletedWithWrappedCFException(h3);
1486 >        checkCompletedNormally(f, v1);
1487 >    }}
1488  
1489      /**
1490       * thenAccept result completes normally after normal completion of source
1491       */
1492 <    public void testThenAccept() {
1493 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1494 <        IncAction r = new IncAction();
1495 <        CompletableFuture<Void> g = f.thenAccept(r);
1496 <        f.complete(one);
1497 <        checkCompletedNormally(g, null);
1498 <        assertEquals(r.value, 2);
1499 <    }
1492 >    public void testThenAccept_normalCompletion() {
1493 >        for (ExecutionMode m : ExecutionMode.values())
1494 >        for (Integer v1 : new Integer[] { 1, null })
1495 >    {
1496 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1497 >        final NoopConsumer[] rs = new NoopConsumer[4];
1498 >        for (int i = 0; i < rs.length; i++) rs[i] = new NoopConsumer(m);
1499 >
1500 >        final CompletableFuture<Void> h0 = m.thenAccept(f, rs[0]);
1501 >        final CompletableFuture<Void> h1 = m.acceptEither(f, f, rs[1]);
1502 >        checkIncomplete(h0);
1503 >        checkIncomplete(h1);
1504 >        assertTrue(f.complete(v1));
1505 >        final CompletableFuture<Void> h2 = m.thenAccept(f, rs[2]);
1506 >        final CompletableFuture<Void> h3 = m.acceptEither(f, f, rs[3]);
1507 >
1508 >        checkCompletedNormally(h0, null);
1509 >        checkCompletedNormally(h1, null);
1510 >        checkCompletedNormally(h2, null);
1511 >        checkCompletedNormally(h3, null);
1512 >        checkCompletedNormally(f, v1);
1513 >        for (NoopConsumer r : rs) r.assertValue(v1);
1514 >    }}
1515  
1516      /**
1517       * thenAccept result completes exceptionally after exceptional
1518       * completion of source
1519       */
1520 <    public void testThenAccept2() {
1521 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1522 <        IncAction r = new IncAction();
1523 <        CompletableFuture<Void> g = f.thenAccept(r);
1524 <        f.completeExceptionally(new CFException());
1525 <        checkCompletedWithWrappedCFException(g);
1526 <    }
1527 <
1528 <    /**
1529 <     * thenAccept result completes exceptionally if action does
1530 <     */
1531 <    public void testThenAccept3() {
1532 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1533 <        FailingConsumer r = new FailingConsumer();
1534 <        CompletableFuture<Void> g = f.thenAccept(r);
1535 <        f.complete(one);
1536 <        checkCompletedWithWrappedCFException(g);
1537 <        assertTrue(r.ran);
1538 <    }
1520 >    public void testThenAccept_exceptionalCompletion() {
1521 >        for (ExecutionMode m : ExecutionMode.values())
1522 >    {
1523 >        final CFException ex = new CFException();
1524 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1525 >        final NoopConsumer[] rs = new NoopConsumer[4];
1526 >        for (int i = 0; i < rs.length; i++) rs[i] = new NoopConsumer(m);
1527 >
1528 >        final CompletableFuture<Void> h0 = m.thenAccept(f, rs[0]);
1529 >        final CompletableFuture<Void> h1 = m.acceptEither(f, f, rs[1]);
1530 >        assertTrue(f.completeExceptionally(ex));
1531 >        final CompletableFuture<Void> h2 = m.thenAccept(f, rs[2]);
1532 >        final CompletableFuture<Void> h3 = m.acceptEither(f, f, rs[3]);
1533 >
1534 >        checkCompletedWithWrappedException(h0, ex);
1535 >        checkCompletedWithWrappedException(h1, ex);
1536 >        checkCompletedWithWrappedException(h2, ex);
1537 >        checkCompletedWithWrappedException(h3, ex);
1538 >        checkCompletedExceptionally(f, ex);
1539 >        for (NoopConsumer r : rs) r.assertNotInvoked();
1540 >    }}
1541  
1542      /**
1543       * thenAccept result completes exceptionally if source cancelled
1544       */
1545 <    public void testThenAccept4() {
1546 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1547 <        IncAction r = new IncAction();
1548 <        CompletableFuture<Void> g = f.thenAccept(r);
1549 <        assertTrue(f.cancel(true));
1550 <        checkCompletedWithWrappedCancellationException(g);
1551 <    }
1552 <
1545 >    public void testThenAccept_sourceCancelled() {
1546 >        for (ExecutionMode m : ExecutionMode.values())
1547 >        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1548 >    {
1549 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1550 >        final NoopConsumer[] rs = new NoopConsumer[4];
1551 >        for (int i = 0; i < rs.length; i++) rs[i] = new NoopConsumer(m);
1552 >
1553 >        final CompletableFuture<Void> h0 = m.thenAccept(f, rs[0]);
1554 >        final CompletableFuture<Void> h1 = m.acceptEither(f, f, rs[1]);
1555 >        assertTrue(f.cancel(mayInterruptIfRunning));
1556 >        final CompletableFuture<Void> h2 = m.thenAccept(f, rs[2]);
1557 >        final CompletableFuture<Void> h3 = m.acceptEither(f, f, rs[3]);
1558 >
1559 >        checkCompletedWithWrappedCancellationException(h0);
1560 >        checkCompletedWithWrappedCancellationException(h1);
1561 >        checkCompletedWithWrappedCancellationException(h2);
1562 >        checkCompletedWithWrappedCancellationException(h3);
1563 >        checkCancelled(f);
1564 >        for (NoopConsumer r : rs) r.assertNotInvoked();
1565 >    }}
1566  
1567      /**
1568 <     * thenCombine result completes normally after normal completion of sources
1568 >     * thenAccept result completes exceptionally if action does
1569       */
1570 <    public void testThenCombine() {
1571 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1572 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1573 <        CompletableFuture<Integer> g = f.thenCombine(f2, add);
1574 <        f.complete(one);
1575 <        checkIncomplete(g);
1576 <        f2.complete(two);
1577 <        checkCompletedNormally(g, three);
1578 <
1579 <        f = new CompletableFuture<Integer>();
1580 <        f.complete(one);
1581 <        f2 = new CompletableFuture<Integer>();
1582 <        g = f.thenCombine(f2, add);
1583 <        checkIncomplete(g);
1584 <        f2.complete(two);
1585 <        checkCompletedNormally(g, three);
1586 <    }
1570 >    public void testThenAccept_actionFailed() {
1571 >        for (ExecutionMode m : ExecutionMode.values())
1572 >        for (Integer v1 : new Integer[] { 1, null })
1573 >    {
1574 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1575 >        final FailingConsumer[] rs = new FailingConsumer[4];
1576 >        for (int i = 0; i < rs.length; i++) rs[i] = new FailingConsumer(m);
1577 >
1578 >        final CompletableFuture<Void> h0 = m.thenAccept(f, rs[0]);
1579 >        final CompletableFuture<Void> h1 = m.acceptEither(f, f, rs[1]);
1580 >        assertTrue(f.complete(v1));
1581 >        final CompletableFuture<Void> h2 = m.thenAccept(f, rs[2]);
1582 >        final CompletableFuture<Void> h3 = m.acceptEither(f, f, rs[3]);
1583 >
1584 >        checkCompletedWithWrappedCFException(h0);
1585 >        checkCompletedWithWrappedCFException(h1);
1586 >        checkCompletedWithWrappedCFException(h2);
1587 >        checkCompletedWithWrappedCFException(h3);
1588 >        checkCompletedNormally(f, v1);
1589 >    }}
1590 >
1591 >    /**
1592 >     * thenCombine result completes normally after normal completion
1593 >     * of sources
1594 >     */
1595 >    public void testThenCombine_normalCompletion() {
1596 >        for (ExecutionMode m : ExecutionMode.values())
1597 >        for (boolean fFirst : new boolean[] { true, false })
1598 >        for (Integer v1 : new Integer[] { 1, null })
1599 >        for (Integer v2 : new Integer[] { 2, null })
1600 >    {
1601 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1602 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
1603 >        final SubtractFunction[] rs = new SubtractFunction[6];
1604 >        for (int i = 0; i < rs.length; i++) rs[i] = new SubtractFunction(m);
1605 >
1606 >        final CompletableFuture<Integer> fst =  fFirst ? f : g;
1607 >        final CompletableFuture<Integer> snd = !fFirst ? f : g;
1608 >        final Integer w1 =  fFirst ? v1 : v2;
1609 >        final Integer w2 = !fFirst ? v1 : v2;
1610 >
1611 >        final CompletableFuture<Integer> h0 = m.thenCombine(f, g, rs[0]);
1612 >        final CompletableFuture<Integer> h1 = m.thenCombine(fst, fst, rs[1]);
1613 >        assertTrue(fst.complete(w1));
1614 >        final CompletableFuture<Integer> h2 = m.thenCombine(f, g, rs[2]);
1615 >        final CompletableFuture<Integer> h3 = m.thenCombine(fst, fst, rs[3]);
1616 >        checkIncomplete(h0); rs[0].assertNotInvoked();
1617 >        checkIncomplete(h2); rs[2].assertNotInvoked();
1618 >        checkCompletedNormally(h1, subtract(w1, w1));
1619 >        checkCompletedNormally(h3, subtract(w1, w1));
1620 >        rs[1].assertValue(subtract(w1, w1));
1621 >        rs[3].assertValue(subtract(w1, w1));
1622 >        assertTrue(snd.complete(w2));
1623 >        final CompletableFuture<Integer> h4 = m.thenCombine(f, g, rs[4]);
1624 >
1625 >        checkCompletedNormally(h0, subtract(v1, v2));
1626 >        checkCompletedNormally(h2, subtract(v1, v2));
1627 >        checkCompletedNormally(h4, subtract(v1, v2));
1628 >        rs[0].assertValue(subtract(v1, v2));
1629 >        rs[2].assertValue(subtract(v1, v2));
1630 >        rs[4].assertValue(subtract(v1, v2));
1631 >
1632 >        checkCompletedNormally(f, v1);
1633 >        checkCompletedNormally(g, v2);
1634 >    }}
1635  
1636      /**
1637       * thenCombine result completes exceptionally after exceptional
1638       * completion of either source
1639       */
1640 <    public void testThenCombine2() {
1641 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1642 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1643 <        CompletableFuture<Integer> g = f.thenCombine(f2, add);
1644 <        f.completeExceptionally(new CFException());
1645 <        f2.complete(two);
1646 <        checkCompletedWithWrappedCFException(g);
1647 <
1648 <        f = new CompletableFuture<Integer>();
1649 <        f.complete(one);
1650 <        f2 = new CompletableFuture<Integer>();
1651 <        g = f.thenCombine(f2, add);
1652 <        f2.completeExceptionally(new CFException());
1653 <        checkCompletedWithWrappedCFException(g);
1654 <    }
1640 >    public void testThenCombine_exceptionalCompletion() throws Throwable {
1641 >        for (ExecutionMode m : ExecutionMode.values())
1642 >        for (boolean fFirst : new boolean[] { true, false })
1643 >        for (boolean failFirst : new boolean[] { true, false })
1644 >        for (Integer v1 : new Integer[] { 1, null })
1645 >    {
1646 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1647 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
1648 >        final CFException ex = new CFException();
1649 >        final SubtractFunction r1 = new SubtractFunction(m);
1650 >        final SubtractFunction r2 = new SubtractFunction(m);
1651 >        final SubtractFunction r3 = new SubtractFunction(m);
1652 >
1653 >        final CompletableFuture<Integer> fst =  fFirst ? f : g;
1654 >        final CompletableFuture<Integer> snd = !fFirst ? f : g;
1655 >        final Callable<Boolean> complete1 = failFirst ?
1656 >            () -> fst.completeExceptionally(ex) :
1657 >            () -> fst.complete(v1);
1658 >        final Callable<Boolean> complete2 = failFirst ?
1659 >            () -> snd.complete(v1) :
1660 >            () -> snd.completeExceptionally(ex);
1661 >
1662 >        final CompletableFuture<Integer> h1 = m.thenCombine(f, g, r1);
1663 >        assertTrue(complete1.call());
1664 >        final CompletableFuture<Integer> h2 = m.thenCombine(f, g, r2);
1665 >        checkIncomplete(h1);
1666 >        checkIncomplete(h2);
1667 >        assertTrue(complete2.call());
1668 >        final CompletableFuture<Integer> h3 = m.thenCombine(f, g, r3);
1669 >
1670 >        checkCompletedWithWrappedException(h1, ex);
1671 >        checkCompletedWithWrappedException(h2, ex);
1672 >        checkCompletedWithWrappedException(h3, ex);
1673 >        r1.assertNotInvoked();
1674 >        r2.assertNotInvoked();
1675 >        r3.assertNotInvoked();
1676 >        checkCompletedNormally(failFirst ? snd : fst, v1);
1677 >        checkCompletedExceptionally(failFirst ? fst : snd, ex);
1678 >    }}
1679  
1680      /**
1681 <     * thenCombine result completes exceptionally if action does
1681 >     * thenCombine result completes exceptionally if either source cancelled
1682       */
1683 <    public void testThenCombine3() {
1684 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1685 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1686 <        FailingBiFunction r = new FailingBiFunction();
1687 <        CompletableFuture<Integer> g = f.thenCombine(f2, r);
1688 <        f.complete(one);
1689 <        checkIncomplete(g);
1690 <        f2.complete(two);
1691 <        checkCompletedWithWrappedCFException(g);
1692 <    }
1683 >    public void testThenCombine_sourceCancelled() throws Throwable {
1684 >        for (ExecutionMode m : ExecutionMode.values())
1685 >        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1686 >        for (boolean fFirst : new boolean[] { true, false })
1687 >        for (boolean failFirst : new boolean[] { true, false })
1688 >        for (Integer v1 : new Integer[] { 1, null })
1689 >    {
1690 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1691 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
1692 >        final SubtractFunction r1 = new SubtractFunction(m);
1693 >        final SubtractFunction r2 = new SubtractFunction(m);
1694 >        final SubtractFunction r3 = new SubtractFunction(m);
1695 >
1696 >        final CompletableFuture<Integer> fst =  fFirst ? f : g;
1697 >        final CompletableFuture<Integer> snd = !fFirst ? f : g;
1698 >        final Callable<Boolean> complete1 = failFirst ?
1699 >            () -> fst.cancel(mayInterruptIfRunning) :
1700 >            () -> fst.complete(v1);
1701 >        final Callable<Boolean> complete2 = failFirst ?
1702 >            () -> snd.complete(v1) :
1703 >            () -> snd.cancel(mayInterruptIfRunning);
1704 >
1705 >        final CompletableFuture<Integer> h1 = m.thenCombine(f, g, r1);
1706 >        assertTrue(complete1.call());
1707 >        final CompletableFuture<Integer> h2 = m.thenCombine(f, g, r2);
1708 >        checkIncomplete(h1);
1709 >        checkIncomplete(h2);
1710 >        assertTrue(complete2.call());
1711 >        final CompletableFuture<Integer> h3 = m.thenCombine(f, g, r3);
1712 >
1713 >        checkCompletedWithWrappedCancellationException(h1);
1714 >        checkCompletedWithWrappedCancellationException(h2);
1715 >        checkCompletedWithWrappedCancellationException(h3);
1716 >        r1.assertNotInvoked();
1717 >        r2.assertNotInvoked();
1718 >        r3.assertNotInvoked();
1719 >        checkCompletedNormally(failFirst ? snd : fst, v1);
1720 >        checkCancelled(failFirst ? fst : snd);
1721 >    }}
1722  
1723      /**
1724 <     * thenCombine result completes exceptionally if either source cancelled
1724 >     * thenCombine result completes exceptionally if action does
1725       */
1726 <    public void testThenCombine4() {
1727 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1728 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1729 <        CompletableFuture<Integer> g = f.thenCombine(f2, add);
1730 <        assertTrue(f.cancel(true));
1731 <        f2.complete(two);
1732 <        checkCompletedWithWrappedCancellationException(g);
1733 <        f = new CompletableFuture<Integer>();
1734 <        f2 = new CompletableFuture<Integer>();
1735 <        g = f.thenCombine(f2, add);
1736 <        f.complete(one);
1737 <        assertTrue(f2.cancel(true));
1738 <        checkCompletedWithWrappedCancellationException(g);
1739 <    }
1726 >    public void testThenCombine_actionFailed() {
1727 >        for (ExecutionMode m : ExecutionMode.values())
1728 >        for (boolean fFirst : new boolean[] { true, false })
1729 >        for (Integer v1 : new Integer[] { 1, null })
1730 >        for (Integer v2 : new Integer[] { 2, null })
1731 >    {
1732 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1733 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
1734 >        final FailingBiFunction r1 = new FailingBiFunction(m);
1735 >        final FailingBiFunction r2 = new FailingBiFunction(m);
1736 >        final FailingBiFunction r3 = new FailingBiFunction(m);
1737 >
1738 >        final CompletableFuture<Integer> fst =  fFirst ? f : g;
1739 >        final CompletableFuture<Integer> snd = !fFirst ? f : g;
1740 >        final Integer w1 =  fFirst ? v1 : v2;
1741 >        final Integer w2 = !fFirst ? v1 : v2;
1742 >
1743 >        final CompletableFuture<Integer> h1 = m.thenCombine(f, g, r1);
1744 >        assertTrue(fst.complete(w1));
1745 >        final CompletableFuture<Integer> h2 = m.thenCombine(f, g, r2);
1746 >        assertTrue(snd.complete(w2));
1747 >        final CompletableFuture<Integer> h3 = m.thenCombine(f, g, r3);
1748 >
1749 >        checkCompletedWithWrappedCFException(h1);
1750 >        checkCompletedWithWrappedCFException(h2);
1751 >        checkCompletedWithWrappedCFException(h3);
1752 >        r1.assertInvoked();
1753 >        r2.assertInvoked();
1754 >        r3.assertInvoked();
1755 >        checkCompletedNormally(f, v1);
1756 >        checkCompletedNormally(g, v2);
1757 >    }}
1758  
1759      /**
1760       * thenAcceptBoth result completes normally after normal
1761       * completion of sources
1762       */
1763 <    public void testThenAcceptBoth() {
1764 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1765 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1766 <        AddAction r = new AddAction();
1767 <        CompletableFuture<Void> g = f.thenAcceptBoth(f2, r);
1768 <        f.complete(one);
1769 <        checkIncomplete(g);
1770 <        f2.complete(two);
1771 <        checkCompletedNormally(g, null);
1772 <        assertEquals(r.value, 3);
1773 <
1774 <        r = new AddAction();
1775 <        f = new CompletableFuture<Integer>();
1776 <        f.complete(one);
1777 <        f2 = new CompletableFuture<Integer>();
1778 <        g = f.thenAcceptBoth(f2, r);
1779 <        checkIncomplete(g);
1780 <        f2.complete(two);
1781 <        checkCompletedNormally(g, null);
1782 <        assertEquals(r.value, 3);
1783 <    }
1763 >    public void testThenAcceptBoth_normalCompletion() {
1764 >        for (ExecutionMode m : ExecutionMode.values())
1765 >        for (boolean fFirst : new boolean[] { true, false })
1766 >        for (Integer v1 : new Integer[] { 1, null })
1767 >        for (Integer v2 : new Integer[] { 2, null })
1768 >    {
1769 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1770 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
1771 >        final SubtractAction r1 = new SubtractAction(m);
1772 >        final SubtractAction r2 = new SubtractAction(m);
1773 >        final SubtractAction r3 = new SubtractAction(m);
1774 >
1775 >        final CompletableFuture<Integer> fst =  fFirst ? f : g;
1776 >        final CompletableFuture<Integer> snd = !fFirst ? f : g;
1777 >        final Integer w1 =  fFirst ? v1 : v2;
1778 >        final Integer w2 = !fFirst ? v1 : v2;
1779 >
1780 >        final CompletableFuture<Void> h1 = m.thenAcceptBoth(f, g, r1);
1781 >        assertTrue(fst.complete(w1));
1782 >        final CompletableFuture<Void> h2 = m.thenAcceptBoth(f, g, r2);
1783 >        checkIncomplete(h1);
1784 >        checkIncomplete(h2);
1785 >        r1.assertNotInvoked();
1786 >        r2.assertNotInvoked();
1787 >        assertTrue(snd.complete(w2));
1788 >        final CompletableFuture<Void> h3 = m.thenAcceptBoth(f, g, r3);
1789 >
1790 >        checkCompletedNormally(h1, null);
1791 >        checkCompletedNormally(h2, null);
1792 >        checkCompletedNormally(h3, null);
1793 >        r1.assertValue(subtract(v1, v2));
1794 >        r2.assertValue(subtract(v1, v2));
1795 >        r3.assertValue(subtract(v1, v2));
1796 >        checkCompletedNormally(f, v1);
1797 >        checkCompletedNormally(g, v2);
1798 >    }}
1799  
1800      /**
1801       * thenAcceptBoth result completes exceptionally after exceptional
1802       * completion of either source
1803       */
1804 <    public void testThenAcceptBoth2() {
1805 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1806 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1807 <        AddAction r = new AddAction();
1808 <        CompletableFuture<Void> g = f.thenAcceptBoth(f2, r);
1809 <        f.completeExceptionally(new CFException());
1810 <        f2.complete(two);
1811 <        checkCompletedWithWrappedCFException(g);
1812 <
1813 <        r = new AddAction();
1814 <        f = new CompletableFuture<Integer>();
1815 <        f.complete(one);
1816 <        f2 = new CompletableFuture<Integer>();
1817 <        g = f.thenAcceptBoth(f2, r);
1818 <        f2.completeExceptionally(new CFException());
1819 <        checkCompletedWithWrappedCFException(g);
1820 <    }
1804 >    public void testThenAcceptBoth_exceptionalCompletion() throws Throwable {
1805 >        for (ExecutionMode m : ExecutionMode.values())
1806 >        for (boolean fFirst : new boolean[] { true, false })
1807 >        for (boolean failFirst : new boolean[] { true, false })
1808 >        for (Integer v1 : new Integer[] { 1, null })
1809 >    {
1810 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1811 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
1812 >        final CFException ex = new CFException();
1813 >        final SubtractAction r1 = new SubtractAction(m);
1814 >        final SubtractAction r2 = new SubtractAction(m);
1815 >        final SubtractAction r3 = new SubtractAction(m);
1816 >
1817 >        final CompletableFuture<Integer> fst =  fFirst ? f : g;
1818 >        final CompletableFuture<Integer> snd = !fFirst ? f : g;
1819 >        final Callable<Boolean> complete1 = failFirst ?
1820 >            () -> fst.completeExceptionally(ex) :
1821 >            () -> fst.complete(v1);
1822 >        final Callable<Boolean> complete2 = failFirst ?
1823 >            () -> snd.complete(v1) :
1824 >            () -> snd.completeExceptionally(ex);
1825 >
1826 >        final CompletableFuture<Void> h1 = m.thenAcceptBoth(f, g, r1);
1827 >        assertTrue(complete1.call());
1828 >        final CompletableFuture<Void> h2 = m.thenAcceptBoth(f, g, r2);
1829 >        checkIncomplete(h1);
1830 >        checkIncomplete(h2);
1831 >        assertTrue(complete2.call());
1832 >        final CompletableFuture<Void> h3 = m.thenAcceptBoth(f, g, r3);
1833 >
1834 >        checkCompletedWithWrappedException(h1, ex);
1835 >        checkCompletedWithWrappedException(h2, ex);
1836 >        checkCompletedWithWrappedException(h3, ex);
1837 >        r1.assertNotInvoked();
1838 >        r2.assertNotInvoked();
1839 >        r3.assertNotInvoked();
1840 >        checkCompletedNormally(failFirst ? snd : fst, v1);
1841 >        checkCompletedExceptionally(failFirst ? fst : snd, ex);
1842 >    }}
1843  
1844      /**
1845 <     * thenAcceptBoth result completes exceptionally if action does
1845 >     * thenAcceptBoth result completes exceptionally if either source cancelled
1846       */
1847 <    public void testThenAcceptBoth3() {
1848 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1849 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1850 <        FailingBiConsumer r = new FailingBiConsumer();
1851 <        CompletableFuture<Void> g = f.thenAcceptBoth(f2, r);
1852 <        f.complete(one);
1853 <        checkIncomplete(g);
1854 <        f2.complete(two);
1855 <        checkCompletedWithWrappedCFException(g);
1856 <    }
1847 >    public void testThenAcceptBoth_sourceCancelled() throws Throwable {
1848 >        for (ExecutionMode m : ExecutionMode.values())
1849 >        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1850 >        for (boolean fFirst : new boolean[] { true, false })
1851 >        for (boolean failFirst : new boolean[] { true, false })
1852 >        for (Integer v1 : new Integer[] { 1, null })
1853 >    {
1854 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1855 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
1856 >        final SubtractAction r1 = new SubtractAction(m);
1857 >        final SubtractAction r2 = new SubtractAction(m);
1858 >        final SubtractAction r3 = new SubtractAction(m);
1859 >
1860 >        final CompletableFuture<Integer> fst =  fFirst ? f : g;
1861 >        final CompletableFuture<Integer> snd = !fFirst ? f : g;
1862 >        final Callable<Boolean> complete1 = failFirst ?
1863 >            () -> fst.cancel(mayInterruptIfRunning) :
1864 >            () -> fst.complete(v1);
1865 >        final Callable<Boolean> complete2 = failFirst ?
1866 >            () -> snd.complete(v1) :
1867 >            () -> snd.cancel(mayInterruptIfRunning);
1868 >
1869 >        final CompletableFuture<Void> h1 = m.thenAcceptBoth(f, g, r1);
1870 >        assertTrue(complete1.call());
1871 >        final CompletableFuture<Void> h2 = m.thenAcceptBoth(f, g, r2);
1872 >        checkIncomplete(h1);
1873 >        checkIncomplete(h2);
1874 >        assertTrue(complete2.call());
1875 >        final CompletableFuture<Void> h3 = m.thenAcceptBoth(f, g, r3);
1876 >
1877 >        checkCompletedWithWrappedCancellationException(h1);
1878 >        checkCompletedWithWrappedCancellationException(h2);
1879 >        checkCompletedWithWrappedCancellationException(h3);
1880 >        r1.assertNotInvoked();
1881 >        r2.assertNotInvoked();
1882 >        r3.assertNotInvoked();
1883 >        checkCompletedNormally(failFirst ? snd : fst, v1);
1884 >        checkCancelled(failFirst ? fst : snd);
1885 >    }}
1886  
1887      /**
1888 <     * thenAcceptBoth result completes exceptionally if either source cancelled
1888 >     * thenAcceptBoth result completes exceptionally if action does
1889       */
1890 <    public void testThenAcceptBoth4() {
1891 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1892 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1893 <        AddAction r = new AddAction();
1894 <        CompletableFuture<Void> g = f.thenAcceptBoth(f2, r);
1895 <        assertTrue(f.cancel(true));
1896 <        f2.complete(two);
1897 <        checkCompletedWithWrappedCancellationException(g);
1898 <        f = new CompletableFuture<Integer>();
1899 <        f2 = new CompletableFuture<Integer>();
1900 <        r = new AddAction();
1901 <        g = f.thenAcceptBoth(f2, r);
1902 <        f.complete(one);
1903 <        assertTrue(f2.cancel(true));
1904 <        checkCompletedWithWrappedCancellationException(g);
1905 <    }
1890 >    public void testThenAcceptBoth_actionFailed() {
1891 >        for (ExecutionMode m : ExecutionMode.values())
1892 >        for (boolean fFirst : new boolean[] { true, false })
1893 >        for (Integer v1 : new Integer[] { 1, null })
1894 >        for (Integer v2 : new Integer[] { 2, null })
1895 >    {
1896 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1897 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
1898 >        final FailingBiConsumer r1 = new FailingBiConsumer(m);
1899 >        final FailingBiConsumer r2 = new FailingBiConsumer(m);
1900 >        final FailingBiConsumer r3 = new FailingBiConsumer(m);
1901 >
1902 >        final CompletableFuture<Integer> fst =  fFirst ? f : g;
1903 >        final CompletableFuture<Integer> snd = !fFirst ? f : g;
1904 >        final Integer w1 =  fFirst ? v1 : v2;
1905 >        final Integer w2 = !fFirst ? v1 : v2;
1906 >
1907 >        final CompletableFuture<Void> h1 = m.thenAcceptBoth(f, g, r1);
1908 >        assertTrue(fst.complete(w1));
1909 >        final CompletableFuture<Void> h2 = m.thenAcceptBoth(f, g, r2);
1910 >        assertTrue(snd.complete(w2));
1911 >        final CompletableFuture<Void> h3 = m.thenAcceptBoth(f, g, r3);
1912 >
1913 >        checkCompletedWithWrappedCFException(h1);
1914 >        checkCompletedWithWrappedCFException(h2);
1915 >        checkCompletedWithWrappedCFException(h3);
1916 >        r1.assertInvoked();
1917 >        r2.assertInvoked();
1918 >        r3.assertInvoked();
1919 >        checkCompletedNormally(f, v1);
1920 >        checkCompletedNormally(g, v2);
1921 >    }}
1922  
1923      /**
1924       * runAfterBoth result completes normally after normal
1925       * completion of sources
1926       */
1927 <    public void testRunAfterBoth() {
1928 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1929 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1930 <        Noop r = new Noop();
1931 <        CompletableFuture<Void> g = f.runAfterBoth(f2, r);
1932 <        f.complete(one);
1933 <        checkIncomplete(g);
1934 <        f2.complete(two);
1935 <        checkCompletedNormally(g, null);
1936 <        assertTrue(r.ran);
1937 <
1938 <        r = new Noop();
1939 <        f = new CompletableFuture<Integer>();
1940 <        f.complete(one);
1941 <        f2 = new CompletableFuture<Integer>();
1942 <        g = f.runAfterBoth(f2, r);
1943 <        checkIncomplete(g);
1944 <        f2.complete(two);
1945 <        checkCompletedNormally(g, null);
1946 <        assertTrue(r.ran);
1947 <    }
1927 >    public void testRunAfterBoth_normalCompletion() {
1928 >        for (ExecutionMode m : ExecutionMode.values())
1929 >        for (boolean fFirst : new boolean[] { true, false })
1930 >        for (Integer v1 : new Integer[] { 1, null })
1931 >        for (Integer v2 : new Integer[] { 2, null })
1932 >    {
1933 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1934 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
1935 >        final Noop r1 = new Noop(m);
1936 >        final Noop r2 = new Noop(m);
1937 >        final Noop r3 = new Noop(m);
1938 >
1939 >        final CompletableFuture<Integer> fst =  fFirst ? f : g;
1940 >        final CompletableFuture<Integer> snd = !fFirst ? f : g;
1941 >        final Integer w1 =  fFirst ? v1 : v2;
1942 >        final Integer w2 = !fFirst ? v1 : v2;
1943 >
1944 >        final CompletableFuture<Void> h1 = m.runAfterBoth(f, g, r1);
1945 >        assertTrue(fst.complete(w1));
1946 >        final CompletableFuture<Void> h2 = m.runAfterBoth(f, g, r2);
1947 >        checkIncomplete(h1);
1948 >        checkIncomplete(h2);
1949 >        r1.assertNotInvoked();
1950 >        r2.assertNotInvoked();
1951 >        assertTrue(snd.complete(w2));
1952 >        final CompletableFuture<Void> h3 = m.runAfterBoth(f, g, r3);
1953 >
1954 >        checkCompletedNormally(h1, null);
1955 >        checkCompletedNormally(h2, null);
1956 >        checkCompletedNormally(h3, null);
1957 >        r1.assertInvoked();
1958 >        r2.assertInvoked();
1959 >        r3.assertInvoked();
1960 >        checkCompletedNormally(f, v1);
1961 >        checkCompletedNormally(g, v2);
1962 >    }}
1963  
1964      /**
1965       * runAfterBoth result completes exceptionally after exceptional
1966       * completion of either source
1967       */
1968 <    public void testRunAfterBoth2() {
1969 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1970 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1971 <        Noop r = new Noop();
1972 <        CompletableFuture<Void> g = f.runAfterBoth(f2, r);
1973 <        f.completeExceptionally(new CFException());
1974 <        f2.complete(two);
1975 <        checkCompletedWithWrappedCFException(g);
1976 <
1977 <        r = new Noop();
1978 <        f = new CompletableFuture<Integer>();
1979 <        f.complete(one);
1980 <        f2 = new CompletableFuture<Integer>();
1981 <        g = f.runAfterBoth(f2, r);
1982 <        f2.completeExceptionally(new CFException());
1983 <        checkCompletedWithWrappedCFException(g);
1984 <    }
1968 >    public void testRunAfterBoth_exceptionalCompletion() throws Throwable {
1969 >        for (ExecutionMode m : ExecutionMode.values())
1970 >        for (boolean fFirst : new boolean[] { true, false })
1971 >        for (boolean failFirst : new boolean[] { true, false })
1972 >        for (Integer v1 : new Integer[] { 1, null })
1973 >    {
1974 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1975 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
1976 >        final CFException ex = new CFException();
1977 >        final Noop r1 = new Noop(m);
1978 >        final Noop r2 = new Noop(m);
1979 >        final Noop r3 = new Noop(m);
1980 >
1981 >        final CompletableFuture<Integer> fst =  fFirst ? f : g;
1982 >        final CompletableFuture<Integer> snd = !fFirst ? f : g;
1983 >        final Callable<Boolean> complete1 = failFirst ?
1984 >            () -> fst.completeExceptionally(ex) :
1985 >            () -> fst.complete(v1);
1986 >        final Callable<Boolean> complete2 = failFirst ?
1987 >            () -> snd.complete(v1) :
1988 >            () -> snd.completeExceptionally(ex);
1989 >
1990 >        final CompletableFuture<Void> h1 = m.runAfterBoth(f, g, r1);
1991 >        assertTrue(complete1.call());
1992 >        final CompletableFuture<Void> h2 = m.runAfterBoth(f, g, r2);
1993 >        checkIncomplete(h1);
1994 >        checkIncomplete(h2);
1995 >        assertTrue(complete2.call());
1996 >        final CompletableFuture<Void> h3 = m.runAfterBoth(f, g, r3);
1997 >
1998 >        checkCompletedWithWrappedException(h1, ex);
1999 >        checkCompletedWithWrappedException(h2, ex);
2000 >        checkCompletedWithWrappedException(h3, ex);
2001 >        r1.assertNotInvoked();
2002 >        r2.assertNotInvoked();
2003 >        r3.assertNotInvoked();
2004 >        checkCompletedNormally(failFirst ? snd : fst, v1);
2005 >        checkCompletedExceptionally(failFirst ? fst : snd, ex);
2006 >    }}
2007  
2008      /**
2009 <     * runAfterBoth result completes exceptionally if action does
2009 >     * runAfterBoth result completes exceptionally if either source cancelled
2010       */
2011 <    public void testRunAfterBoth3() {
2012 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
2013 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
2014 <        FailingNoop r = new FailingNoop();
2015 <        CompletableFuture<Void> g = f.runAfterBoth(f2, r);
2016 <        f.complete(one);
2017 <        checkIncomplete(g);
2018 <        f2.complete(two);
2019 <        checkCompletedWithWrappedCFException(g);
2020 <    }
2011 >    public void testRunAfterBoth_sourceCancelled() throws Throwable {
2012 >        for (ExecutionMode m : ExecutionMode.values())
2013 >        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2014 >        for (boolean fFirst : new boolean[] { true, false })
2015 >        for (boolean failFirst : new boolean[] { true, false })
2016 >        for (Integer v1 : new Integer[] { 1, null })
2017 >    {
2018 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
2019 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
2020 >        final Noop r1 = new Noop(m);
2021 >        final Noop r2 = new Noop(m);
2022 >        final Noop r3 = new Noop(m);
2023 >
2024 >        final CompletableFuture<Integer> fst =  fFirst ? f : g;
2025 >        final CompletableFuture<Integer> snd = !fFirst ? f : g;
2026 >        final Callable<Boolean> complete1 = failFirst ?
2027 >            () -> fst.cancel(mayInterruptIfRunning) :
2028 >            () -> fst.complete(v1);
2029 >        final Callable<Boolean> complete2 = failFirst ?
2030 >            () -> snd.complete(v1) :
2031 >            () -> snd.cancel(mayInterruptIfRunning);
2032 >
2033 >        final CompletableFuture<Void> h1 = m.runAfterBoth(f, g, r1);
2034 >        assertTrue(complete1.call());
2035 >        final CompletableFuture<Void> h2 = m.runAfterBoth(f, g, r2);
2036 >        checkIncomplete(h1);
2037 >        checkIncomplete(h2);
2038 >        assertTrue(complete2.call());
2039 >        final CompletableFuture<Void> h3 = m.runAfterBoth(f, g, r3);
2040 >
2041 >        checkCompletedWithWrappedCancellationException(h1);
2042 >        checkCompletedWithWrappedCancellationException(h2);
2043 >        checkCompletedWithWrappedCancellationException(h3);
2044 >        r1.assertNotInvoked();
2045 >        r2.assertNotInvoked();
2046 >        r3.assertNotInvoked();
2047 >        checkCompletedNormally(failFirst ? snd : fst, v1);
2048 >        checkCancelled(failFirst ? fst : snd);
2049 >    }}
2050  
2051      /**
2052 <     * runAfterBoth result completes exceptionally if either source cancelled
2052 >     * runAfterBoth result completes exceptionally if action does
2053       */
2054 <    public void testRunAfterBoth4() {
2055 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
2056 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
2057 <        Noop r = new Noop();
2058 <        CompletableFuture<Void> g = f.runAfterBoth(f2, r);
2059 <        assertTrue(f.cancel(true));
2060 <        f2.complete(two);
2061 <        checkCompletedWithWrappedCancellationException(g);
2062 <        f = new CompletableFuture<Integer>();
2063 <        f2 = new CompletableFuture<Integer>();
2064 <        r = new Noop();
2065 <        g = f.runAfterBoth(f2, r);
2066 <        f.complete(one);
2067 <        assertTrue(f2.cancel(true));
2068 <        checkCompletedWithWrappedCancellationException(g);
2069 <    }
2054 >    public void testRunAfterBoth_actionFailed() {
2055 >        for (ExecutionMode m : ExecutionMode.values())
2056 >        for (boolean fFirst : new boolean[] { true, false })
2057 >        for (Integer v1 : new Integer[] { 1, null })
2058 >        for (Integer v2 : new Integer[] { 2, null })
2059 >    {
2060 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
2061 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
2062 >        final FailingRunnable r1 = new FailingRunnable(m);
2063 >        final FailingRunnable r2 = new FailingRunnable(m);
2064 >        final FailingRunnable r3 = new FailingRunnable(m);
2065 >
2066 >        final CompletableFuture<Integer> fst =  fFirst ? f : g;
2067 >        final CompletableFuture<Integer> snd = !fFirst ? f : g;
2068 >        final Integer w1 =  fFirst ? v1 : v2;
2069 >        final Integer w2 = !fFirst ? v1 : v2;
2070 >
2071 >        final CompletableFuture<Void> h1 = m.runAfterBoth(f, g, r1);
2072 >        assertTrue(fst.complete(w1));
2073 >        final CompletableFuture<Void> h2 = m.runAfterBoth(f, g, r2);
2074 >        assertTrue(snd.complete(w2));
2075 >        final CompletableFuture<Void> h3 = m.runAfterBoth(f, g, r3);
2076 >
2077 >        checkCompletedWithWrappedCFException(h1);
2078 >        checkCompletedWithWrappedCFException(h2);
2079 >        checkCompletedWithWrappedCFException(h3);
2080 >        r1.assertInvoked();
2081 >        r2.assertInvoked();
2082 >        r3.assertInvoked();
2083 >        checkCompletedNormally(f, v1);
2084 >        checkCompletedNormally(g, v2);
2085 >    }}
2086  
2087      /**
2088       * applyToEither result completes normally after normal completion
2089       * of either source
2090       */
2091 <    public void testApplyToEither() {
2092 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
2093 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
2094 <        CompletableFuture<Integer> g = f.applyToEither(f2, inc);
2095 <        f.complete(one);
2096 <        checkCompletedNormally(g, two);
2097 <        f2.complete(one);
2098 <        checkCompletedNormally(g, two);
2099 <
2100 <        f = new CompletableFuture<Integer>();
2101 <        f.complete(one);
2102 <        f2 = new CompletableFuture<Integer>();
2103 <        g = f.applyToEither(f2, inc);
2104 <        checkCompletedNormally(g, two);
2105 <    }
2091 >    public void testApplyToEither_normalCompletion() {
2092 >        for (ExecutionMode m : ExecutionMode.values())
2093 >        for (Integer v1 : new Integer[] { 1, null })
2094 >        for (Integer v2 : new Integer[] { 2, null })
2095 >    {
2096 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
2097 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
2098 >        final IncFunction[] rs = new IncFunction[6];
2099 >        for (int i = 0; i < rs.length; i++) rs[i] = new IncFunction(m);
2100 >
2101 >        final CompletableFuture<Integer> h0 = m.applyToEither(f, g, rs[0]);
2102 >        final CompletableFuture<Integer> h1 = m.applyToEither(g, f, rs[1]);
2103 >        checkIncomplete(h0);
2104 >        checkIncomplete(h1);
2105 >        rs[0].assertNotInvoked();
2106 >        rs[1].assertNotInvoked();
2107 >        f.complete(v1);
2108 >        checkCompletedNormally(h0, inc(v1));
2109 >        checkCompletedNormally(h1, inc(v1));
2110 >        final CompletableFuture<Integer> h2 = m.applyToEither(f, g, rs[2]);
2111 >        final CompletableFuture<Integer> h3 = m.applyToEither(g, f, rs[3]);
2112 >        checkCompletedNormally(h2, inc(v1));
2113 >        checkCompletedNormally(h3, inc(v1));
2114 >        g.complete(v2);
2115 >
2116 >        // unspecified behavior - both source completions available
2117 >        final CompletableFuture<Integer> h4 = m.applyToEither(f, g, rs[4]);
2118 >        final CompletableFuture<Integer> h5 = m.applyToEither(g, f, rs[5]);
2119 >        rs[4].assertValue(h4.join());
2120 >        rs[5].assertValue(h5.join());
2121 >        assertTrue(Objects.equals(inc(v1), h4.join()) ||
2122 >                   Objects.equals(inc(v2), h4.join()));
2123 >        assertTrue(Objects.equals(inc(v1), h5.join()) ||
2124 >                   Objects.equals(inc(v2), h5.join()));
2125 >
2126 >        checkCompletedNormally(f, v1);
2127 >        checkCompletedNormally(g, v2);
2128 >        checkCompletedNormally(h0, inc(v1));
2129 >        checkCompletedNormally(h1, inc(v1));
2130 >        checkCompletedNormally(h2, inc(v1));
2131 >        checkCompletedNormally(h3, inc(v1));
2132 >        for (int i = 0; i < 4; i++) rs[i].assertValue(inc(v1));
2133 >    }}
2134  
2135      /**
2136       * applyToEither result completes exceptionally after exceptional
2137       * completion of either source
2138       */
2139 <    public void testApplyToEither2() {
2140 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
2141 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
2142 <        CompletableFuture<Integer> g = f.applyToEither(f2, inc);
2143 <        f.completeExceptionally(new CFException());
2144 <        f2.complete(one);
2145 <        checkCompletedWithWrappedCFException(g);
2139 >    public void testApplyToEither_exceptionalCompletion() {
2140 >        for (ExecutionMode m : ExecutionMode.values())
2141 >        for (Integer v1 : new Integer[] { 1, null })
2142 >    {
2143 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
2144 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
2145 >        final CFException ex = new CFException();
2146 >        final IncFunction[] rs = new IncFunction[6];
2147 >        for (int i = 0; i < rs.length; i++) rs[i] = new IncFunction(m);
2148 >
2149 >        final CompletableFuture<Integer> h0 = m.applyToEither(f, g, rs[0]);
2150 >        final CompletableFuture<Integer> h1 = m.applyToEither(g, f, rs[1]);
2151 >        checkIncomplete(h0);
2152 >        checkIncomplete(h1);
2153 >        rs[0].assertNotInvoked();
2154 >        rs[1].assertNotInvoked();
2155 >        f.completeExceptionally(ex);
2156 >        checkCompletedWithWrappedException(h0, ex);
2157 >        checkCompletedWithWrappedException(h1, ex);
2158 >        final CompletableFuture<Integer> h2 = m.applyToEither(f, g, rs[2]);
2159 >        final CompletableFuture<Integer> h3 = m.applyToEither(g, f, rs[3]);
2160 >        checkCompletedWithWrappedException(h2, ex);
2161 >        checkCompletedWithWrappedException(h3, ex);
2162 >        g.complete(v1);
2163 >
2164 >        // unspecified behavior - both source completions available
2165 >        final CompletableFuture<Integer> h4 = m.applyToEither(f, g, rs[4]);
2166 >        final CompletableFuture<Integer> h5 = m.applyToEither(g, f, rs[5]);
2167 >        try {
2168 >            assertEquals(inc(v1), h4.join());
2169 >            rs[4].assertValue(inc(v1));
2170 >        } catch (CompletionException ok) {
2171 >            checkCompletedWithWrappedException(h4, ex);
2172 >            rs[4].assertNotInvoked();
2173 >        }
2174 >        try {
2175 >            assertEquals(inc(v1), h5.join());
2176 >            rs[5].assertValue(inc(v1));
2177 >        } catch (CompletionException ok) {
2178 >            checkCompletedWithWrappedException(h5, ex);
2179 >            rs[5].assertNotInvoked();
2180 >        }
2181  
2182 <        f = new CompletableFuture<Integer>();
2183 <        f2 = new CompletableFuture<Integer>();
2184 <        f2.completeExceptionally(new CFException());
2185 <        g = f.applyToEither(f2, inc);
2186 <        checkCompletedWithWrappedCFException(g);
2187 <    }
2182 >        checkCompletedExceptionally(f, ex);
2183 >        checkCompletedNormally(g, v1);
2184 >        checkCompletedWithWrappedException(h0, ex);
2185 >        checkCompletedWithWrappedException(h1, ex);
2186 >        checkCompletedWithWrappedException(h2, ex);
2187 >        checkCompletedWithWrappedException(h3, ex);
2188 >        checkCompletedWithWrappedException(h4, ex);
2189 >        for (int i = 0; i < 4; i++) rs[i].assertNotInvoked();
2190 >    }}
2191 >
2192 >    public void testApplyToEither_exceptionalCompletion2() {
2193 >        for (ExecutionMode m : ExecutionMode.values())
2194 >        for (boolean fFirst : new boolean[] { true, false })
2195 >        for (Integer v1 : new Integer[] { 1, null })
2196 >    {
2197 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
2198 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
2199 >        final CFException ex = new CFException();
2200 >        final IncFunction[] rs = new IncFunction[6];
2201 >        for (int i = 0; i < rs.length; i++) rs[i] = new IncFunction(m);
2202 >
2203 >        final CompletableFuture<Integer> h0 = m.applyToEither(f, g, rs[0]);
2204 >        final CompletableFuture<Integer> h1 = m.applyToEither(g, f, rs[1]);
2205 >        assertTrue(fFirst ? f.complete(v1) : g.completeExceptionally(ex));
2206 >        assertTrue(!fFirst ? f.complete(v1) : g.completeExceptionally(ex));
2207 >        final CompletableFuture<Integer> h2 = m.applyToEither(f, g, rs[2]);
2208 >        final CompletableFuture<Integer> h3 = m.applyToEither(g, f, rs[3]);
2209  
2210 <    /**
2211 <     * applyToEither result completes exceptionally if action does
2212 <     */
2213 <    public void testApplyToEither3() {
2214 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
2215 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
2216 <        FailingFunction r = new FailingFunction();
2217 <        CompletableFuture<Integer> g = f.applyToEither(f2, r);
2218 <        f2.complete(two);
2219 <        checkCompletedWithWrappedCFException(g);
2220 <    }
2210 >        // unspecified behavior - both source completions available
2211 >        try {
2212 >            assertEquals(inc(v1), h0.join());
2213 >            rs[0].assertValue(inc(v1));
2214 >        } catch (CompletionException ok) {
2215 >            checkCompletedWithWrappedException(h0, ex);
2216 >            rs[0].assertNotInvoked();
2217 >        }
2218 >        try {
2219 >            assertEquals(inc(v1), h1.join());
2220 >            rs[1].assertValue(inc(v1));
2221 >        } catch (CompletionException ok) {
2222 >            checkCompletedWithWrappedException(h1, ex);
2223 >            rs[1].assertNotInvoked();
2224 >        }
2225 >        try {
2226 >            assertEquals(inc(v1), h2.join());
2227 >            rs[2].assertValue(inc(v1));
2228 >        } catch (CompletionException ok) {
2229 >            checkCompletedWithWrappedException(h2, ex);
2230 >            rs[2].assertNotInvoked();
2231 >        }
2232 >        try {
2233 >            assertEquals(inc(v1), h3.join());
2234 >            rs[3].assertValue(inc(v1));
2235 >        } catch (CompletionException ok) {
2236 >            checkCompletedWithWrappedException(h3, ex);
2237 >            rs[3].assertNotInvoked();
2238 >        }
2239  
2240 <    /**
2241 <     * applyToEither result completes exceptionally if either source cancelled
2242 <     */
891 <    public void testApplyToEither4() {
892 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
893 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
894 <        CompletableFuture<Integer> g = f.applyToEither(f2, inc);
895 <        assertTrue(f.cancel(true));
896 <        checkCompletedWithWrappedCancellationException(g);
897 <        f = new CompletableFuture<Integer>();
898 <        f2 = new CompletableFuture<Integer>();
899 <        assertTrue(f2.cancel(true));
900 <        checkCompletedWithWrappedCancellationException(g);
901 <    }
2240 >        checkCompletedNormally(f, v1);
2241 >        checkCompletedExceptionally(g, ex);
2242 >    }}
2243  
2244      /**
2245 <     * acceptEither result completes normally after normal completion
905 <     * of either source
2245 >     * applyToEither result completes exceptionally if either source cancelled
2246       */
2247 <    public void testAcceptEither() {
2248 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
2249 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
2250 <        IncAction r = new IncAction();
2251 <        CompletableFuture<Void> g = f.acceptEither(f2, r);
2252 <        f.complete(one);
2253 <        checkCompletedNormally(g, null);
2254 <        f2.complete(one);
2255 <        checkCompletedNormally(g, null);
2256 <        assertEquals(r.value, 2);
2257 <
2258 <        r = new IncAction();
2259 <        f = new CompletableFuture<Integer>();
2260 <        f.complete(one);
2261 <        f2 = new CompletableFuture<Integer>();
2262 <        g = f.acceptEither(f2, r);
2263 <        checkCompletedNormally(g, null);
2264 <        assertEquals(r.value, 2);
2265 <    }
2247 >    public void testApplyToEither_sourceCancelled() {
2248 >        for (ExecutionMode m : ExecutionMode.values())
2249 >        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2250 >        for (Integer v1 : new Integer[] { 1, null })
2251 >    {
2252 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
2253 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
2254 >        final IncFunction[] rs = new IncFunction[6];
2255 >        for (int i = 0; i < rs.length; i++) rs[i] = new IncFunction(m);
2256 >
2257 >        final CompletableFuture<Integer> h0 = m.applyToEither(f, g, rs[0]);
2258 >        final CompletableFuture<Integer> h1 = m.applyToEither(g, f, rs[1]);
2259 >        checkIncomplete(h0);
2260 >        checkIncomplete(h1);
2261 >        rs[0].assertNotInvoked();
2262 >        rs[1].assertNotInvoked();
2263 >        f.cancel(mayInterruptIfRunning);
2264 >        checkCompletedWithWrappedCancellationException(h0);
2265 >        checkCompletedWithWrappedCancellationException(h1);
2266 >        final CompletableFuture<Integer> h2 = m.applyToEither(f, g, rs[2]);
2267 >        final CompletableFuture<Integer> h3 = m.applyToEither(g, f, rs[3]);
2268 >        checkCompletedWithWrappedCancellationException(h2);
2269 >        checkCompletedWithWrappedCancellationException(h3);
2270 >        g.complete(v1);
2271 >
2272 >        // unspecified behavior - both source completions available
2273 >        final CompletableFuture<Integer> h4 = m.applyToEither(f, g, rs[4]);
2274 >        final CompletableFuture<Integer> h5 = m.applyToEither(g, f, rs[5]);
2275 >        try {
2276 >            assertEquals(inc(v1), h4.join());
2277 >            rs[4].assertValue(inc(v1));
2278 >        } catch (CompletionException ok) {
2279 >            checkCompletedWithWrappedCancellationException(h4);
2280 >            rs[4].assertNotInvoked();
2281 >        }
2282 >        try {
2283 >            assertEquals(inc(v1), h5.join());
2284 >            rs[5].assertValue(inc(v1));
2285 >        } catch (CompletionException ok) {
2286 >            checkCompletedWithWrappedCancellationException(h5);
2287 >            rs[5].assertNotInvoked();
2288 >        }
2289  
2290 <    /**
2291 <     * acceptEither result completes exceptionally after exceptional
2292 <     * completion of either source
2293 <     */
2294 <    public void testAcceptEither2() {
2295 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
2296 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
2297 <        IncAction r = new IncAction();
2298 <        CompletableFuture<Void> g = f.acceptEither(f2, r);
2299 <        f.completeExceptionally(new CFException());
2300 <        f2.complete(one);
2301 <        checkCompletedWithWrappedCFException(g);
2290 >        checkCancelled(f);
2291 >        checkCompletedNormally(g, v1);
2292 >        checkCompletedWithWrappedCancellationException(h0);
2293 >        checkCompletedWithWrappedCancellationException(h1);
2294 >        checkCompletedWithWrappedCancellationException(h2);
2295 >        checkCompletedWithWrappedCancellationException(h3);
2296 >        for (int i = 0; i < 4; i++) rs[i].assertNotInvoked();
2297 >    }}
2298 >
2299 >    public void testApplyToEither_sourceCancelled2() {
2300 >        for (ExecutionMode m : ExecutionMode.values())
2301 >        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2302 >        for (boolean fFirst : new boolean[] { true, false })
2303 >        for (Integer v1 : new Integer[] { 1, null })
2304 >    {
2305 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
2306 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
2307 >        final IncFunction[] rs = new IncFunction[6];
2308 >        for (int i = 0; i < rs.length; i++) rs[i] = new IncFunction(m);
2309 >
2310 >        final CompletableFuture<Integer> h0 = m.applyToEither(f, g, rs[0]);
2311 >        final CompletableFuture<Integer> h1 = m.applyToEither(g, f, rs[1]);
2312 >        assertTrue(fFirst ? f.complete(v1) : g.cancel(mayInterruptIfRunning));
2313 >        assertTrue(!fFirst ? f.complete(v1) : g.cancel(mayInterruptIfRunning));
2314 >        final CompletableFuture<Integer> h2 = m.applyToEither(f, g, rs[2]);
2315 >        final CompletableFuture<Integer> h3 = m.applyToEither(g, f, rs[3]);
2316  
2317 <        r = new IncAction();
2318 <        f = new CompletableFuture<Integer>();
2319 <        f2 = new CompletableFuture<Integer>();
2320 <        f2.completeExceptionally(new CFException());
2321 <        g = f.acceptEither(f2, r);
2322 <        checkCompletedWithWrappedCFException(g);
2323 <    }
2317 >        // unspecified behavior - both source completions available
2318 >        try {
2319 >            assertEquals(inc(v1), h0.join());
2320 >            rs[0].assertValue(inc(v1));
2321 >        } catch (CompletionException ok) {
2322 >            checkCompletedWithWrappedCancellationException(h0);
2323 >            rs[0].assertNotInvoked();
2324 >        }
2325 >        try {
2326 >            assertEquals(inc(v1), h1.join());
2327 >            rs[1].assertValue(inc(v1));
2328 >        } catch (CompletionException ok) {
2329 >            checkCompletedWithWrappedCancellationException(h1);
2330 >            rs[1].assertNotInvoked();
2331 >        }
2332 >        try {
2333 >            assertEquals(inc(v1), h2.join());
2334 >            rs[2].assertValue(inc(v1));
2335 >        } catch (CompletionException ok) {
2336 >            checkCompletedWithWrappedCancellationException(h2);
2337 >            rs[2].assertNotInvoked();
2338 >        }
2339 >        try {
2340 >            assertEquals(inc(v1), h3.join());
2341 >            rs[3].assertValue(inc(v1));
2342 >        } catch (CompletionException ok) {
2343 >            checkCompletedWithWrappedCancellationException(h3);
2344 >            rs[3].assertNotInvoked();
2345 >        }
2346  
2347 <    /**
2348 <     * acceptEither result completes exceptionally if action does
2349 <     */
951 <    public void testAcceptEither3() {
952 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
953 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
954 <        FailingConsumer r = new FailingConsumer();
955 <        CompletableFuture<Void> g = f.acceptEither(f2, r);
956 <        f2.complete(two);
957 <        checkCompletedWithWrappedCFException(g);
958 <    }
2347 >        checkCompletedNormally(f, v1);
2348 >        checkCancelled(g);
2349 >    }}
2350  
2351      /**
2352 <     * acceptEither result completes exceptionally if either source cancelled
2352 >     * applyToEither result completes exceptionally if action does
2353       */
2354 <    public void testAcceptEither4() {
2355 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
2356 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
2357 <        IncAction r = new IncAction();
2358 <        CompletableFuture<Void> g = f.acceptEither(f2, r);
2359 <        assertTrue(f.cancel(true));
2360 <        checkCompletedWithWrappedCancellationException(g);
2361 <        f = new CompletableFuture<Integer>();
2362 <        f2 = new CompletableFuture<Integer>();
2363 <        assertTrue(f2.cancel(true));
2364 <        checkCompletedWithWrappedCancellationException(g);
2365 <    }
2366 <
2354 >    public void testApplyToEither_actionFailed() {
2355 >        for (ExecutionMode m : ExecutionMode.values())
2356 >        for (Integer v1 : new Integer[] { 1, null })
2357 >        for (Integer v2 : new Integer[] { 2, null })
2358 >    {
2359 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
2360 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
2361 >        final FailingFunction[] rs = new FailingFunction[6];
2362 >        for (int i = 0; i < rs.length; i++) rs[i] = new FailingFunction(m);
2363 >
2364 >        final CompletableFuture<Integer> h0 = m.applyToEither(f, g, rs[0]);
2365 >        final CompletableFuture<Integer> h1 = m.applyToEither(g, f, rs[1]);
2366 >        f.complete(v1);
2367 >        final CompletableFuture<Integer> h2 = m.applyToEither(f, g, rs[2]);
2368 >        final CompletableFuture<Integer> h3 = m.applyToEither(g, f, rs[3]);
2369 >        checkCompletedWithWrappedCFException(h0);
2370 >        checkCompletedWithWrappedCFException(h1);
2371 >        checkCompletedWithWrappedCFException(h2);
2372 >        checkCompletedWithWrappedCFException(h3);
2373 >        for (int i = 0; i < 4; i++) rs[i].assertValue(v1);
2374 >
2375 >        g.complete(v2);
2376 >
2377 >        // unspecified behavior - both source completions available
2378 >        final CompletableFuture<Integer> h4 = m.applyToEither(f, g, rs[4]);
2379 >        final CompletableFuture<Integer> h5 = m.applyToEither(g, f, rs[5]);
2380 >
2381 >        checkCompletedWithWrappedCFException(h4);
2382 >        assertTrue(Objects.equals(v1, rs[4].value) ||
2383 >                   Objects.equals(v2, rs[4].value));
2384 >        checkCompletedWithWrappedCFException(h5);
2385 >        assertTrue(Objects.equals(v1, rs[5].value) ||
2386 >                   Objects.equals(v2, rs[5].value));
2387 >
2388 >        checkCompletedNormally(f, v1);
2389 >        checkCompletedNormally(g, v2);
2390 >    }}
2391  
2392      /**
2393 <     * runAfterEither result completes normally after normal completion
2393 >     * acceptEither result completes normally after normal completion
2394       * of either source
2395       */
2396 <    public void testRunAfterEither() {
2397 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
2398 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
2399 <        Noop r = new Noop();
2400 <        CompletableFuture<Void> g = f.runAfterEither(f2, r);
2401 <        f.complete(one);
2402 <        checkCompletedNormally(g, null);
2403 <        f2.complete(one);
2404 <        checkCompletedNormally(g, null);
2405 <        assertTrue(r.ran);
2406 <
2407 <        r = new Noop();
2408 <        f = new CompletableFuture<Integer>();
2409 <        f.complete(one);
2410 <        f2 = new CompletableFuture<Integer>();
2411 <        g = f.runAfterEither(f2, r);
2412 <        checkCompletedNormally(g, null);
2413 <        assertTrue(r.ran);
2414 <    }
2396 >    public void testAcceptEither_normalCompletion() {
2397 >        for (ExecutionMode m : ExecutionMode.values())
2398 >        for (Integer v1 : new Integer[] { 1, null })
2399 >        for (Integer v2 : new Integer[] { 2, null })
2400 >    {
2401 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
2402 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
2403 >        final NoopConsumer[] rs = new NoopConsumer[6];
2404 >        for (int i = 0; i < rs.length; i++) rs[i] = new NoopConsumer(m);
2405 >
2406 >        final CompletableFuture<Void> h0 = m.acceptEither(f, g, rs[0]);
2407 >        final CompletableFuture<Void> h1 = m.acceptEither(g, f, rs[1]);
2408 >        checkIncomplete(h0);
2409 >        checkIncomplete(h1);
2410 >        rs[0].assertNotInvoked();
2411 >        rs[1].assertNotInvoked();
2412 >        f.complete(v1);
2413 >        checkCompletedNormally(h0, null);
2414 >        checkCompletedNormally(h1, null);
2415 >        rs[0].assertValue(v1);
2416 >        rs[1].assertValue(v1);
2417 >        final CompletableFuture<Void> h2 = m.acceptEither(f, g, rs[2]);
2418 >        final CompletableFuture<Void> h3 = m.acceptEither(g, f, rs[3]);
2419 >        checkCompletedNormally(h2, null);
2420 >        checkCompletedNormally(h3, null);
2421 >        rs[2].assertValue(v1);
2422 >        rs[3].assertValue(v1);
2423 >        g.complete(v2);
2424 >
2425 >        // unspecified behavior - both source completions available
2426 >        final CompletableFuture<Void> h4 = m.acceptEither(f, g, rs[4]);
2427 >        final CompletableFuture<Void> h5 = m.acceptEither(g, f, rs[5]);
2428 >        checkCompletedNormally(h4, null);
2429 >        checkCompletedNormally(h5, null);
2430 >        assertTrue(Objects.equals(v1, rs[4].value) ||
2431 >                   Objects.equals(v2, rs[4].value));
2432 >        assertTrue(Objects.equals(v1, rs[5].value) ||
2433 >                   Objects.equals(v2, rs[5].value));
2434 >
2435 >        checkCompletedNormally(f, v1);
2436 >        checkCompletedNormally(g, v2);
2437 >        checkCompletedNormally(h0, null);
2438 >        checkCompletedNormally(h1, null);
2439 >        checkCompletedNormally(h2, null);
2440 >        checkCompletedNormally(h3, null);
2441 >        for (int i = 0; i < 4; i++) rs[i].assertValue(v1);
2442 >    }}
2443  
2444      /**
2445 <     * runAfterEither result completes exceptionally after exceptional
2445 >     * acceptEither result completes exceptionally after exceptional
2446       * completion of either source
2447       */
2448 <    public void testRunAfterEither2() {
2449 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
2450 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
2451 <        Noop r = new Noop();
2452 <        CompletableFuture<Void> g = f.runAfterEither(f2, r);
2453 <        f.completeExceptionally(new CFException());
2454 <        f2.complete(one);
2455 <        checkCompletedWithWrappedCFException(g);
2456 <
2457 <        r = new Noop();
2458 <        f = new CompletableFuture<Integer>();
2459 <        f2 = new CompletableFuture<Integer>();
2460 <        f2.completeExceptionally(new CFException());
2461 <        g = f.runAfterEither(f2, r);
2462 <        checkCompletedWithWrappedCFException(g);
2463 <    }
2464 <
2465 <    /**
2466 <     * runAfterEither result completes exceptionally if action does
2467 <     */
2468 <    public void testRunAfterEither3() {
2469 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
2470 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
2471 <        FailingNoop r = new FailingNoop();
2472 <        CompletableFuture<Void> g = f.runAfterEither(f2, r);
2473 <        f2.complete(two);
2474 <        checkCompletedWithWrappedCFException(g);
2475 <    }
2476 <
1034 <    /**
1035 <     * runAfterEither result completes exceptionally if either source cancelled
1036 <     */
1037 <    public void testRunAfterEither4() {
1038 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1039 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1040 <        Noop r = new Noop();
1041 <        CompletableFuture<Void> g = f.runAfterEither(f2, r);
1042 <        assertTrue(f.cancel(true));
1043 <        checkCompletedWithWrappedCancellationException(g);
1044 <        f = new CompletableFuture<Integer>();
1045 <        f2 = new CompletableFuture<Integer>();
1046 <        assertTrue(f2.cancel(true));
1047 <        checkCompletedWithWrappedCancellationException(g);
1048 <    }
1049 <
1050 <    /**
1051 <     * thenCompose result completes normally after normal completion of source
1052 <     */
1053 <    public void testThenCompose() {
1054 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1055 <        CompletableFutureInc r = new CompletableFutureInc();
1056 <        CompletableFuture<Integer> g = f.thenCompose(r);
1057 <        f.complete(one);
1058 <        checkCompletedNormally(g, two);
1059 <    }
1060 <
1061 <    /**
1062 <     * thenCompose result completes exceptionally after exceptional
1063 <     * completion of source
1064 <     */
1065 <    public void testThenCompose2() {
1066 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1067 <        CompletableFutureInc r = new CompletableFutureInc();
1068 <        CompletableFuture<Integer> g = f.thenCompose(r);
1069 <        f.completeExceptionally(new CFException());
1070 <        checkCompletedWithWrappedCFException(g);
1071 <    }
1072 <
1073 <    /**
1074 <     * thenCompose result completes exceptionally if action does
1075 <     */
1076 <    public void testThenCompose3() {
1077 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1078 <        FailingCompletableFutureFunction r = new FailingCompletableFutureFunction();
1079 <        CompletableFuture<Integer> g = f.thenCompose(r);
1080 <        f.complete(one);
1081 <        checkCompletedWithWrappedCFException(g);
1082 <    }
1083 <
1084 <    /**
1085 <     * thenCompose result completes exceptionally if source cancelled
1086 <     */
1087 <    public void testThenCompose4() {
1088 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1089 <        CompletableFutureInc r = new CompletableFutureInc();
1090 <        CompletableFuture<Integer> g = f.thenCompose(r);
1091 <        assertTrue(f.cancel(true));
1092 <        checkCompletedWithWrappedCancellationException(g);
1093 <    }
1094 <
1095 <
1096 <    // asyncs
1097 <
1098 <    /**
1099 <     * thenRunAsync result completes normally after normal completion of source
1100 <     */
1101 <    public void testThenRunAsync() {
1102 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1103 <        Noop r = new Noop();
1104 <        CompletableFuture<Void> g = f.thenRunAsync(r);
1105 <        f.complete(null);
1106 <        checkCompletedNormally(g, null);
1107 <
1108 <        // reordered version
1109 <        f = new CompletableFuture<Integer>();
1110 <        f.complete(null);
1111 <        r = new Noop();
1112 <        g = f.thenRunAsync(r);
1113 <        checkCompletedNormally(g, null);
1114 <    }
1115 <
1116 <    /**
1117 <     * thenRunAsync result completes exceptionally after exceptional
1118 <     * completion of source
1119 <     */
1120 <    public void testThenRunAsync2() {
1121 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1122 <        Noop r = new Noop();
1123 <        CompletableFuture<Void> g = f.thenRunAsync(r);
1124 <        f.completeExceptionally(new CFException());
2448 >    public void testAcceptEither_exceptionalCompletion() {
2449 >        for (ExecutionMode m : ExecutionMode.values())
2450 >        for (Integer v1 : new Integer[] { 1, null })
2451 >    {
2452 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
2453 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
2454 >        final CFException ex = new CFException();
2455 >        final NoopConsumer[] rs = new NoopConsumer[6];
2456 >        for (int i = 0; i < rs.length; i++) rs[i] = new NoopConsumer(m);
2457 >
2458 >        final CompletableFuture<Void> h0 = m.acceptEither(f, g, rs[0]);
2459 >        final CompletableFuture<Void> h1 = m.acceptEither(g, f, rs[1]);
2460 >        checkIncomplete(h0);
2461 >        checkIncomplete(h1);
2462 >        rs[0].assertNotInvoked();
2463 >        rs[1].assertNotInvoked();
2464 >        f.completeExceptionally(ex);
2465 >        checkCompletedWithWrappedException(h0, ex);
2466 >        checkCompletedWithWrappedException(h1, ex);
2467 >        final CompletableFuture<Void> h2 = m.acceptEither(f, g, rs[2]);
2468 >        final CompletableFuture<Void> h3 = m.acceptEither(g, f, rs[3]);
2469 >        checkCompletedWithWrappedException(h2, ex);
2470 >        checkCompletedWithWrappedException(h3, ex);
2471 >
2472 >        g.complete(v1);
2473 >
2474 >        // unspecified behavior - both source completions available
2475 >        final CompletableFuture<Void> h4 = m.acceptEither(f, g, rs[4]);
2476 >        final CompletableFuture<Void> h5 = m.acceptEither(g, f, rs[5]);
2477          try {
2478 <            g.join();
2479 <            shouldThrow();
2480 <        } catch (Exception ok) {
2478 >            assertNull(h4.join());
2479 >            rs[4].assertValue(v1);
2480 >        } catch (CompletionException ok) {
2481 >            checkCompletedWithWrappedException(h4, ex);
2482 >            rs[4].assertNotInvoked();
2483          }
1130        checkCompletedWithWrappedCFException(g);
1131    }
1132
1133    /**
1134     * thenRunAsync result completes exceptionally if action does
1135     */
1136    public void testThenRunAsync3() {
1137        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1138        FailingNoop r = new FailingNoop();
1139        CompletableFuture<Void> g = f.thenRunAsync(r);
1140        f.complete(null);
1141        checkCompletedWithWrappedCFException(g);
1142    }
1143
1144    /**
1145     * thenRunAsync result completes exceptionally if source cancelled
1146     */
1147    public void testThenRunAsync4() {
1148        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1149        Noop r = new Noop();
1150        CompletableFuture<Void> g = f.thenRunAsync(r);
1151        assertTrue(f.cancel(true));
1152        checkCompletedWithWrappedCancellationException(g);
1153    }
1154
1155    /**
1156     * thenApplyAsync result completes normally after normal completion of source
1157     */
1158    public void testThenApplyAsync() {
1159        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1160        CompletableFuture<Integer> g = f.thenApplyAsync(inc);
1161        f.complete(one);
1162        checkCompletedNormally(g, two);
1163    }
1164
1165    /**
1166     * thenApplyAsync result completes exceptionally after exceptional
1167     * completion of source
1168     */
1169    public void testThenApplyAsync2() {
1170        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1171        CompletableFuture<Integer> g = f.thenApplyAsync(inc);
1172        f.completeExceptionally(new CFException());
1173        checkCompletedWithWrappedCFException(g);
1174    }
1175
1176    /**
1177     * thenApplyAsync result completes exceptionally if action does
1178     */
1179    public void testThenApplyAsync3() {
1180        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1181        FailingFunction r = new FailingFunction();
1182        CompletableFuture<Integer> g = f.thenApplyAsync(r);
1183        f.complete(null);
1184        checkCompletedWithWrappedCFException(g);
1185    }
1186
1187    /**
1188     * thenApplyAsync result completes exceptionally if source cancelled
1189     */
1190    public void testThenApplyAsync4() {
1191        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1192        CompletableFuture<Integer> g = f.thenApplyAsync(inc);
1193        assertTrue(f.cancel(true));
1194        checkCompletedWithWrappedCancellationException(g);
1195    }
1196
1197    /**
1198     * thenAcceptAsync result completes normally after normal
1199     * completion of source
1200     */
1201    public void testThenAcceptAsync() {
1202        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1203        IncAction r = new IncAction();
1204        CompletableFuture<Void> g = f.thenAcceptAsync(r);
1205        f.complete(one);
1206        checkCompletedNormally(g, null);
1207        assertEquals(r.value, 2);
1208    }
1209
1210    /**
1211     * thenAcceptAsync result completes exceptionally after exceptional
1212     * completion of source
1213     */
1214    public void testThenAcceptAsync2() {
1215        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1216        IncAction r = new IncAction();
1217        CompletableFuture<Void> g = f.thenAcceptAsync(r);
1218        f.completeExceptionally(new CFException());
1219        checkCompletedWithWrappedCFException(g);
1220    }
1221
1222    /**
1223     * thenAcceptAsync result completes exceptionally if action does
1224     */
1225    public void testThenAcceptAsync3() {
1226        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1227        FailingConsumer r = new FailingConsumer();
1228        CompletableFuture<Void> g = f.thenAcceptAsync(r);
1229        f.complete(null);
1230        checkCompletedWithWrappedCFException(g);
1231    }
1232
1233    /**
1234     * thenAcceptAsync result completes exceptionally if source cancelled
1235     */
1236    public void testThenAcceptAsync4() {
1237        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1238        IncAction r = new IncAction();
1239        CompletableFuture<Void> g = f.thenAcceptAsync(r);
1240        assertTrue(f.cancel(true));
1241        checkCompletedWithWrappedCancellationException(g);
1242    }
1243    /**
1244     * thenCombineAsync result completes normally after normal
1245     * completion of sources
1246     */
1247    public void testThenCombineAsync() {
1248        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1249        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1250        CompletableFuture<Integer> g = f.thenCombineAsync(f2, add);
1251        f.complete(one);
1252        checkIncomplete(g);
1253        f2.complete(two);
1254        checkCompletedNormally(g, three);
1255    }
1256
1257    /**
1258     * thenCombineAsync result completes exceptionally after exceptional
1259     * completion of source
1260     */
1261    public void testThenCombineAsync2() {
1262        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1263        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1264        CompletableFuture<Integer> g = f.thenCombineAsync(f2, add);
1265        f.completeExceptionally(new CFException());
1266        f2.complete(two);
1267        checkCompletedWithWrappedCFException(g);
1268
1269        f = new CompletableFuture<Integer>();
1270        f2 = new CompletableFuture<Integer>();
1271        g = f.thenCombineAsync(f2, add);
1272        f.complete(one);
1273        f2.completeExceptionally(new CFException());
1274        checkCompletedWithWrappedCFException(g);
1275    }
1276
1277    /**
1278     * thenCombineAsync result completes exceptionally if action does
1279     */
1280    public void testThenCombineAsync3() {
1281        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1282        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1283        FailingBiFunction r = new FailingBiFunction();
1284        CompletableFuture<Integer> g = f.thenCombineAsync(f2, r);
1285        f.complete(one);
1286        checkIncomplete(g);
1287        f2.complete(two);
1288        checkCompletedWithWrappedCFException(g);
1289    }
1290
1291    /**
1292     * thenCombineAsync result completes exceptionally if either source cancelled
1293     */
1294    public void testThenCombineAsync4() {
1295        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1296        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1297        CompletableFuture<Integer> g = f.thenCombineAsync(f2, add);
1298        assertTrue(f.cancel(true));
1299        f2.complete(two);
1300        checkCompletedWithWrappedCancellationException(g);
1301
1302        f = new CompletableFuture<Integer>();
1303        f2 = new CompletableFuture<Integer>();
1304        g = f.thenCombineAsync(f2, add);
1305        f.complete(one);
1306        assertTrue(f2.cancel(true));
1307        checkCompletedWithWrappedCancellationException(g);
1308    }
1309
1310    /**
1311     * thenAcceptBothAsync result completes normally after normal
1312     * completion of sources
1313     */
1314    public void testThenAcceptBothAsync() {
1315        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1316        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1317        AddAction r = new AddAction();
1318        CompletableFuture<Void> g = f.thenAcceptBothAsync(f2, r);
1319        f.complete(one);
1320        checkIncomplete(g);
1321        f2.complete(two);
1322        checkCompletedNormally(g, null);
1323        assertEquals(r.value, 3);
1324    }
1325
1326    /**
1327     * thenAcceptBothAsync result completes exceptionally after exceptional
1328     * completion of source
1329     */
1330    public void testThenAcceptBothAsync2() {
1331        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1332        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1333        AddAction r = new AddAction();
1334        CompletableFuture<Void> g = f.thenAcceptBothAsync(f2, r);
1335        f.completeExceptionally(new CFException());
1336        f2.complete(two);
1337        checkCompletedWithWrappedCFException(g);
1338
1339        r = new AddAction();
1340        f = new CompletableFuture<Integer>();
1341        f2 = new CompletableFuture<Integer>();
1342        g = f.thenAcceptBothAsync(f2, r);
1343        f.complete(one);
1344        f2.completeExceptionally(new CFException());
1345        checkCompletedWithWrappedCFException(g);
1346    }
1347
1348    /**
1349     * thenAcceptBothAsync result completes exceptionally if action does
1350     */
1351    public void testThenAcceptBothAsync3() {
1352        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1353        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1354        FailingBiConsumer r = new FailingBiConsumer();
1355        CompletableFuture<Void> g = f.thenAcceptBothAsync(f2, r);
1356        f.complete(one);
1357        checkIncomplete(g);
1358        f2.complete(two);
1359        checkCompletedWithWrappedCFException(g);
1360    }
1361
1362    /**
1363     * thenAcceptBothAsync result completes exceptionally if either source cancelled
1364     */
1365    public void testThenAcceptBothAsync4() {
1366        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1367        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1368        AddAction r = new AddAction();
1369        CompletableFuture<Void> g = f.thenAcceptBothAsync(f2, r);
1370        assertTrue(f.cancel(true));
1371        f2.complete(two);
1372        checkCompletedWithWrappedCancellationException(g);
1373
1374        r = new AddAction();
1375        f = new CompletableFuture<Integer>();
1376        f2 = new CompletableFuture<Integer>();
1377        g = f.thenAcceptBothAsync(f2, r);
1378        f.complete(one);
1379        assertTrue(f2.cancel(true));
1380        checkCompletedWithWrappedCancellationException(g);
1381    }
1382
1383    /**
1384     * runAfterBothAsync result completes normally after normal
1385     * completion of sources
1386     */
1387    public void testRunAfterBothAsync() {
1388        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1389        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1390        Noop r = new Noop();
1391        CompletableFuture<Void> g = f.runAfterBothAsync(f2, r);
1392        f.complete(one);
1393        checkIncomplete(g);
1394        f2.complete(two);
1395        checkCompletedNormally(g, null);
1396        assertTrue(r.ran);
1397    }
1398
1399    /**
1400     * runAfterBothAsync result completes exceptionally after exceptional
1401     * completion of source
1402     */
1403    public void testRunAfterBothAsync2() {
1404        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1405        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1406        Noop r = new Noop();
1407        CompletableFuture<Void> g = f.runAfterBothAsync(f2, r);
1408        f.completeExceptionally(new CFException());
1409        f2.complete(two);
1410        checkCompletedWithWrappedCFException(g);
1411
1412        r = new Noop();
1413        f = new CompletableFuture<Integer>();
1414        f2 = new CompletableFuture<Integer>();
1415        g = f.runAfterBothAsync(f2, r);
1416        f.complete(one);
1417        f2.completeExceptionally(new CFException());
1418        checkCompletedWithWrappedCFException(g);
1419    }
1420
1421    /**
1422     * runAfterBothAsync result completes exceptionally if action does
1423     */
1424    public void testRunAfterBothAsync3() {
1425        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1426        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1427        FailingNoop r = new FailingNoop();
1428        CompletableFuture<Void> g = f.runAfterBothAsync(f2, r);
1429        f.complete(one);
1430        checkIncomplete(g);
1431        f2.complete(two);
1432        checkCompletedWithWrappedCFException(g);
1433    }
1434
1435    /**
1436     * runAfterBothAsync result completes exceptionally if either source cancelled
1437     */
1438    public void testRunAfterBothAsync4() {
1439        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1440        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1441        Noop r = new Noop();
1442        CompletableFuture<Void> g = f.runAfterBothAsync(f2, r);
1443        assertTrue(f.cancel(true));
1444        f2.complete(two);
1445        checkCompletedWithWrappedCancellationException(g);
1446
1447        r = new Noop();
1448        f = new CompletableFuture<Integer>();
1449        f2 = new CompletableFuture<Integer>();
1450        g = f.runAfterBothAsync(f2, r);
1451        f.complete(one);
1452        assertTrue(f2.cancel(true));
1453        checkCompletedWithWrappedCancellationException(g);
1454    }
1455
1456    /**
1457     * applyToEitherAsync result completes normally after normal
1458     * completion of sources
1459     */
1460    public void testApplyToEitherAsync() {
1461        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1462        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1463        CompletableFuture<Integer> g = f.applyToEitherAsync(f2, inc);
1464        f.complete(one);
1465        checkCompletedNormally(g, two);
1466
1467        f = new CompletableFuture<Integer>();
1468        f.complete(one);
1469        f2 = new CompletableFuture<Integer>();
1470        g = f.applyToEitherAsync(f2, inc);
1471        checkCompletedNormally(g, two);
1472    }
1473
1474    /**
1475     * applyToEitherAsync result completes exceptionally after exceptional
1476     * completion of source
1477     */
1478    public void testApplyToEitherAsync2() {
1479        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1480        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1481        CompletableFuture<Integer> g = f.applyToEitherAsync(f2, inc);
1482        f.completeExceptionally(new CFException());
1483        checkCompletedWithWrappedCFException(g);
1484
1485        f = new CompletableFuture<Integer>();
1486        f2 = new CompletableFuture<Integer>();
1487        f2.completeExceptionally(new CFException());
1488        g = f.applyToEitherAsync(f2, inc);
1489        f.complete(one);
1490        checkCompletedWithWrappedCFException(g);
1491    }
1492
1493    /**
1494     * applyToEitherAsync result completes exceptionally if action does
1495     */
1496    public void testApplyToEitherAsync3() {
1497        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1498        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1499        FailingFunction r = new FailingFunction();
1500        CompletableFuture<Integer> g = f.applyToEitherAsync(f2, r);
1501        f.complete(one);
1502        checkCompletedWithWrappedCFException(g);
1503    }
1504
1505    /**
1506     * applyToEitherAsync result completes exceptionally if either source cancelled
1507     */
1508    public void testApplyToEitherAsync4() {
1509        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1510        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1511        CompletableFuture<Integer> g = f.applyToEitherAsync(f2, inc);
1512        assertTrue(f.cancel(true));
1513        checkCompletedWithWrappedCancellationException(g);
1514
1515        f = new CompletableFuture<Integer>();
1516        f2 = new CompletableFuture<Integer>();
1517        assertTrue(f2.cancel(true));
1518        g = f.applyToEitherAsync(f2, inc);
1519        checkCompletedWithWrappedCancellationException(g);
1520    }
1521
1522    /**
1523     * acceptEitherAsync result completes normally after normal
1524     * completion of sources
1525     */
1526    public void testAcceptEitherAsync() {
1527        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1528        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1529        IncAction r = new IncAction();
1530        CompletableFuture<Void> g = f.acceptEitherAsync(f2, r);
1531        f.complete(one);
1532        checkCompletedNormally(g, null);
1533        assertEquals(r.value, 2);
1534
1535        r = new IncAction();
1536        f = new CompletableFuture<Integer>();
1537        f.complete(one);
1538        f2 = new CompletableFuture<Integer>();
1539        g = f.acceptEitherAsync(f2, r);
1540        checkCompletedNormally(g, null);
1541        assertEquals(r.value, 2);
1542    }
1543
1544    /**
1545     * acceptEitherAsync result completes exceptionally after exceptional
1546     * completion of source
1547     */
1548    public void testAcceptEitherAsync2() {
1549        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1550        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1551        IncAction r = new IncAction();
1552        CompletableFuture<Void> g = f.acceptEitherAsync(f2, r);
1553        f.completeExceptionally(new CFException());
1554        checkCompletedWithWrappedCFException(g);
1555
1556        r = new IncAction();
1557        f = new CompletableFuture<Integer>();
1558        f2 = new CompletableFuture<Integer>();
1559        f2.completeExceptionally(new CFException());
1560        g = f.acceptEitherAsync(f2, r);
1561        f.complete(one);
1562        checkCompletedWithWrappedCFException(g);
1563    }
1564
1565    /**
1566     * acceptEitherAsync result completes exceptionally if action does
1567     */
1568    public void testAcceptEitherAsync3() {
1569        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1570        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1571        FailingConsumer r = new FailingConsumer();
1572        CompletableFuture<Void> g = f.acceptEitherAsync(f2, r);
1573        f.complete(one);
1574        checkCompletedWithWrappedCFException(g);
1575    }
1576
1577    /**
1578     * acceptEitherAsync result completes exceptionally if either
1579     * source cancelled
1580     */
1581    public void testAcceptEitherAsync4() {
1582        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1583        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1584        IncAction r = new IncAction();
1585        CompletableFuture<Void> g = f.acceptEitherAsync(f2, r);
1586        assertTrue(f.cancel(true));
1587        checkCompletedWithWrappedCancellationException(g);
1588
1589        r = new IncAction();
1590        f = new CompletableFuture<Integer>();
1591        f2 = new CompletableFuture<Integer>();
1592        assertTrue(f2.cancel(true));
1593        g = f.acceptEitherAsync(f2, r);
1594        checkCompletedWithWrappedCancellationException(g);
1595    }
1596
1597    /**
1598     * runAfterEitherAsync result completes normally after normal
1599     * completion of sources
1600     */
1601    public void testRunAfterEitherAsync() {
1602        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1603        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1604        Noop r = new Noop();
1605        CompletableFuture<Void> g = f.runAfterEitherAsync(f2, r);
1606        f.complete(one);
1607        checkCompletedNormally(g, null);
1608        assertTrue(r.ran);
1609
1610        r = new Noop();
1611        f = new CompletableFuture<Integer>();
1612        f.complete(one);
1613        f2 = new CompletableFuture<Integer>();
1614        g = f.runAfterEitherAsync(f2, r);
1615        checkCompletedNormally(g, null);
1616        assertTrue(r.ran);
1617    }
1618
1619    /**
1620     * runAfterEitherAsync result completes exceptionally after exceptional
1621     * completion of source
1622     */
1623    public void testRunAfterEitherAsync2() {
1624        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1625        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1626        Noop r = new Noop();
1627        CompletableFuture<Void> g = f.runAfterEitherAsync(f2, r);
1628        f.completeExceptionally(new CFException());
1629        checkCompletedWithWrappedCFException(g);
1630
1631        r = new Noop();
1632        f = new CompletableFuture<Integer>();
1633        f2 = new CompletableFuture<Integer>();
1634        f2.completeExceptionally(new CFException());
1635        g = f.runAfterEitherAsync(f2, r);
1636        f.complete(one);
1637        checkCompletedWithWrappedCFException(g);
1638    }
1639
1640    /**
1641     * runAfterEitherAsync result completes exceptionally if action does
1642     */
1643    public void testRunAfterEitherAsync3() {
1644        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1645        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1646        FailingNoop r = new FailingNoop();
1647        CompletableFuture<Void> g = f.runAfterEitherAsync(f2, r);
1648        f.complete(one);
1649        checkCompletedWithWrappedCFException(g);
1650    }
1651
1652    /**
1653     * runAfterEitherAsync result completes exceptionally if either
1654     * source cancelled
1655     */
1656    public void testRunAfterEitherAsync4() {
1657        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1658        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1659        Noop r = new Noop();
1660        CompletableFuture<Void> g = f.runAfterEitherAsync(f2, r);
1661        assertTrue(f.cancel(true));
1662        checkCompletedWithWrappedCancellationException(g);
1663
1664        r = new Noop();
1665        f = new CompletableFuture<Integer>();
1666        f2 = new CompletableFuture<Integer>();
1667        assertTrue(f2.cancel(true));
1668        g = f.runAfterEitherAsync(f2, r);
1669        checkCompletedWithWrappedCancellationException(g);
1670    }
1671
1672    /**
1673     * thenComposeAsync result completes normally after normal
1674     * completion of source
1675     */
1676    public void testThenComposeAsync() {
1677        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1678        CompletableFutureInc r = new CompletableFutureInc();
1679        CompletableFuture<Integer> g = f.thenComposeAsync(r);
1680        f.complete(one);
1681        checkCompletedNormally(g, two);
1682    }
1683
1684    /**
1685     * thenComposeAsync result completes exceptionally after
1686     * exceptional completion of source
1687     */
1688    public void testThenComposeAsync2() {
1689        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1690        CompletableFutureInc r = new CompletableFutureInc();
1691        CompletableFuture<Integer> g = f.thenComposeAsync(r);
1692        f.completeExceptionally(new CFException());
1693        checkCompletedWithWrappedCFException(g);
1694    }
1695
1696    /**
1697     * thenComposeAsync result completes exceptionally if action does
1698     */
1699    public void testThenComposeAsync3() {
1700        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1701        FailingCompletableFutureFunction r = new FailingCompletableFutureFunction();
1702        CompletableFuture<Integer> g = f.thenComposeAsync(r);
1703        f.complete(one);
1704        checkCompletedWithWrappedCFException(g);
1705    }
1706
1707    /**
1708     * thenComposeAsync result completes exceptionally if source cancelled
1709     */
1710    public void testThenComposeAsync4() {
1711        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1712        CompletableFutureInc r = new CompletableFutureInc();
1713        CompletableFuture<Integer> g = f.thenComposeAsync(r);
1714        assertTrue(f.cancel(true));
1715        checkCompletedWithWrappedCancellationException(g);
1716    }
1717
1718
1719    // async with explicit executors
1720
1721    /**
1722     * thenRunAsync result completes normally after normal completion of source
1723     */
1724    public void testThenRunAsyncE() {
1725        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1726        Noop r = new Noop();
1727        CompletableFuture<Void> g = f.thenRunAsync(r, new ThreadExecutor());
1728        f.complete(null);
1729        checkCompletedNormally(g, null);
1730
1731        // reordered version
1732        f = new CompletableFuture<Integer>();
1733        f.complete(null);
1734        r = new Noop();
1735        g = f.thenRunAsync(r, new ThreadExecutor());
1736        checkCompletedNormally(g, null);
1737    }
1738
1739    /**
1740     * thenRunAsync result completes exceptionally after exceptional
1741     * completion of source
1742     */
1743    public void testThenRunAsync2E() {
1744        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1745        Noop r = new Noop();
1746        CompletableFuture<Void> g = f.thenRunAsync(r, new ThreadExecutor());
1747        f.completeExceptionally(new CFException());
2484          try {
2485 <            g.join();
2486 <            shouldThrow();
2487 <        } catch (Exception ok) {
2485 >            assertNull(h5.join());
2486 >            rs[5].assertValue(v1);
2487 >        } catch (CompletionException ok) {
2488 >            checkCompletedWithWrappedException(h5, ex);
2489 >            rs[5].assertNotInvoked();
2490          }
1753        checkCompletedWithWrappedCFException(g);
1754    }
1755
1756    /**
1757     * thenRunAsync result completes exceptionally if action does
1758     */
1759    public void testThenRunAsync3E() {
1760        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1761        FailingNoop r = new FailingNoop();
1762        CompletableFuture<Void> g = f.thenRunAsync(r, new ThreadExecutor());
1763        f.complete(null);
1764        checkCompletedWithWrappedCFException(g);
1765    }
1766
1767    /**
1768     * thenRunAsync result completes exceptionally if source cancelled
1769     */
1770    public void testThenRunAsync4E() {
1771        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1772        Noop r = new Noop();
1773        CompletableFuture<Void> g = f.thenRunAsync(r, new ThreadExecutor());
1774        assertTrue(f.cancel(true));
1775        checkCompletedWithWrappedCancellationException(g);
1776    }
1777
1778    /**
1779     * thenApplyAsync result completes normally after normal completion of source
1780     */
1781    public void testThenApplyAsyncE() {
1782        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1783        CompletableFuture<Integer> g = f.thenApplyAsync(inc, new ThreadExecutor());
1784        f.complete(one);
1785        checkCompletedNormally(g, two);
1786    }
1787
1788    /**
1789     * thenApplyAsync result completes exceptionally after exceptional
1790     * completion of source
1791     */
1792    public void testThenApplyAsync2E() {
1793        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1794        CompletableFuture<Integer> g = f.thenApplyAsync(inc, new ThreadExecutor());
1795        f.completeExceptionally(new CFException());
1796        checkCompletedWithWrappedCFException(g);
1797    }
1798
1799    /**
1800     * thenApplyAsync result completes exceptionally if action does
1801     */
1802    public void testThenApplyAsync3E() {
1803        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1804        FailingFunction r = new FailingFunction();
1805        CompletableFuture<Integer> g = f.thenApplyAsync(r, new ThreadExecutor());
1806        f.complete(null);
1807        checkCompletedWithWrappedCFException(g);
1808    }
1809
1810    /**
1811     * thenApplyAsync result completes exceptionally if source cancelled
1812     */
1813    public void testThenApplyAsync4E() {
1814        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1815        CompletableFuture<Integer> g = f.thenApplyAsync(inc, new ThreadExecutor());
1816        assertTrue(f.cancel(true));
1817        checkCompletedWithWrappedCancellationException(g);
1818    }
1819
1820    /**
1821     * thenAcceptAsync result completes normally after normal
1822     * completion of source
1823     */
1824    public void testThenAcceptAsyncE() {
1825        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1826        IncAction r = new IncAction();
1827        CompletableFuture<Void> g = f.thenAcceptAsync(r, new ThreadExecutor());
1828        f.complete(one);
1829        checkCompletedNormally(g, null);
1830        assertEquals(r.value, 2);
1831    }
1832
1833    /**
1834     * thenAcceptAsync result completes exceptionally after exceptional
1835     * completion of source
1836     */
1837    public void testThenAcceptAsync2E() {
1838        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1839        IncAction r = new IncAction();
1840        CompletableFuture<Void> g = f.thenAcceptAsync(r, new ThreadExecutor());
1841        f.completeExceptionally(new CFException());
1842        checkCompletedWithWrappedCFException(g);
1843    }
1844
1845    /**
1846     * thenAcceptAsync result completes exceptionally if action does
1847     */
1848    public void testThenAcceptAsync3E() {
1849        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1850        FailingConsumer r = new FailingConsumer();
1851        CompletableFuture<Void> g = f.thenAcceptAsync(r, new ThreadExecutor());
1852        f.complete(null);
1853        checkCompletedWithWrappedCFException(g);
1854    }
2491  
2492 <    /**
2493 <     * thenAcceptAsync result completes exceptionally if source cancelled
2494 <     */
2495 <    public void testThenAcceptAsync4E() {
2496 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
2497 <        IncAction r = new IncAction();
2498 <        CompletableFuture<Void> g = f.thenAcceptAsync(r, new ThreadExecutor());
2499 <        assertTrue(f.cancel(true));
2500 <        checkCompletedWithWrappedCancellationException(g);
2501 <    }
2502 <    /**
2503 <     * thenCombineAsync result completes normally after normal
2504 <     * completion of sources
2505 <     */
2506 <    public void testThenCombineAsyncE() {
2507 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
2508 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
2509 <        CompletableFuture<Integer> g = f.thenCombineAsync(f2, add, new ThreadExecutor());
2510 <        f.complete(one);
2511 <        checkIncomplete(g);
2512 <        f2.complete(two);
2513 <        checkCompletedNormally(g, three);
2514 <    }
2515 <
2516 <    /**
2517 <     * thenCombineAsync result completes exceptionally after exceptional
2518 <     * completion of source
1883 <     */
1884 <    public void testThenCombineAsync2E() {
1885 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1886 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1887 <        CompletableFuture<Integer> g = f.thenCombineAsync(f2, add, new ThreadExecutor());
1888 <        f.completeExceptionally(new CFException());
1889 <        f2.complete(two);
1890 <        checkCompletedWithWrappedCFException(g);
1891 <
1892 <        f = new CompletableFuture<Integer>();
1893 <        f2 = new CompletableFuture<Integer>();
1894 <        g = f.thenCombineAsync(f2, add, new ThreadExecutor());
1895 <        f.complete(one);
1896 <        f2.completeExceptionally(new CFException());
1897 <        checkCompletedWithWrappedCFException(g);
1898 <    }
1899 <
1900 <    /**
1901 <     * thenCombineAsync result completes exceptionally if action does
1902 <     */
1903 <    public void testThenCombineAsync3E() {
1904 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1905 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1906 <        FailingBiFunction r = new FailingBiFunction();
1907 <        CompletableFuture<Integer> g = f.thenCombineAsync(f2, r, new ThreadExecutor());
1908 <        f.complete(one);
1909 <        checkIncomplete(g);
1910 <        f2.complete(two);
1911 <        checkCompletedWithWrappedCFException(g);
1912 <    }
1913 <
1914 <    /**
1915 <     * thenCombineAsync result completes exceptionally if either source cancelled
1916 <     */
1917 <    public void testThenCombineAsync4E() {
1918 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1919 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1920 <        CompletableFuture<Integer> g = f.thenCombineAsync(f2, add, new ThreadExecutor());
1921 <        assertTrue(f.cancel(true));
1922 <        f2.complete(two);
1923 <        checkCompletedWithWrappedCancellationException(g);
1924 <
1925 <        f = new CompletableFuture<Integer>();
1926 <        f2 = new CompletableFuture<Integer>();
1927 <        g = f.thenCombineAsync(f2, add, new ThreadExecutor());
1928 <        f.complete(one);
1929 <        assertTrue(f2.cancel(true));
1930 <        checkCompletedWithWrappedCancellationException(g);
1931 <    }
1932 <
1933 <    /**
1934 <     * thenAcceptBothAsync result completes normally after normal
1935 <     * completion of sources
1936 <     */
1937 <    public void testThenAcceptBothAsyncE() {
1938 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1939 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1940 <        AddAction r = new AddAction();
1941 <        CompletableFuture<Void> g = f.thenAcceptBothAsync(f2, r, new ThreadExecutor());
1942 <        f.complete(one);
1943 <        checkIncomplete(g);
1944 <        f2.complete(two);
1945 <        checkCompletedNormally(g, null);
1946 <        assertEquals(r.value, 3);
1947 <    }
1948 <
1949 <    /**
1950 <     * thenAcceptBothAsync result completes exceptionally after exceptional
1951 <     * completion of source
1952 <     */
1953 <    public void testThenAcceptBothAsync2E() {
1954 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1955 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1956 <        AddAction r = new AddAction();
1957 <        CompletableFuture<Void> g = f.thenAcceptBothAsync(f2, r, new ThreadExecutor());
1958 <        f.completeExceptionally(new CFException());
1959 <        f2.complete(two);
1960 <        checkCompletedWithWrappedCFException(g);
1961 <
1962 <        r = new AddAction();
1963 <        f = new CompletableFuture<Integer>();
1964 <        f2 = new CompletableFuture<Integer>();
1965 <        g = f.thenAcceptBothAsync(f2, r, new ThreadExecutor());
1966 <        f.complete(one);
1967 <        f2.completeExceptionally(new CFException());
1968 <        checkCompletedWithWrappedCFException(g);
1969 <    }
1970 <
1971 <    /**
1972 <     * thenAcceptBothAsync result completes exceptionally if action does
1973 <     */
1974 <    public void testThenAcceptBothAsync3E() {
1975 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1976 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1977 <        FailingBiConsumer r = new FailingBiConsumer();
1978 <        CompletableFuture<Void> g = f.thenAcceptBothAsync(f2, r, new ThreadExecutor());
1979 <        f.complete(one);
1980 <        checkIncomplete(g);
1981 <        f2.complete(two);
1982 <        checkCompletedWithWrappedCFException(g);
1983 <    }
1984 <
1985 <    /**
1986 <     * thenAcceptBothAsync result completes exceptionally if either source cancelled
1987 <     */
1988 <    public void testThenAcceptBothAsync4E() {
1989 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1990 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1991 <        AddAction r = new AddAction();
1992 <        CompletableFuture<Void> g = f.thenAcceptBothAsync(f2, r, new ThreadExecutor());
1993 <        assertTrue(f.cancel(true));
1994 <        f2.complete(two);
1995 <        checkCompletedWithWrappedCancellationException(g);
2492 >        checkCompletedExceptionally(f, ex);
2493 >        checkCompletedNormally(g, v1);
2494 >        checkCompletedWithWrappedException(h0, ex);
2495 >        checkCompletedWithWrappedException(h1, ex);
2496 >        checkCompletedWithWrappedException(h2, ex);
2497 >        checkCompletedWithWrappedException(h3, ex);
2498 >        checkCompletedWithWrappedException(h4, ex);
2499 >        for (int i = 0; i < 4; i++) rs[i].assertNotInvoked();
2500 >    }}
2501 >
2502 >    public void testAcceptEither_exceptionalCompletion2() {
2503 >        for (ExecutionMode m : ExecutionMode.values())
2504 >        for (boolean fFirst : new boolean[] { true, false })
2505 >        for (Integer v1 : new Integer[] { 1, null })
2506 >    {
2507 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
2508 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
2509 >        final CFException ex = new CFException();
2510 >        final NoopConsumer[] rs = new NoopConsumer[6];
2511 >        for (int i = 0; i < rs.length; i++) rs[i] = new NoopConsumer(m);
2512 >
2513 >        final CompletableFuture<Void> h0 = m.acceptEither(f, g, rs[0]);
2514 >        final CompletableFuture<Void> h1 = m.acceptEither(g, f, rs[1]);
2515 >        assertTrue(fFirst ? f.complete(v1) : g.completeExceptionally(ex));
2516 >        assertTrue(!fFirst ? f.complete(v1) : g.completeExceptionally(ex));
2517 >        final CompletableFuture<Void> h2 = m.acceptEither(f, g, rs[2]);
2518 >        final CompletableFuture<Void> h3 = m.acceptEither(g, f, rs[3]);
2519  
2520 <        r = new AddAction();
2521 <        f = new CompletableFuture<Integer>();
2522 <        f2 = new CompletableFuture<Integer>();
2523 <        g = f.thenAcceptBothAsync(f2, r, new ThreadExecutor());
2524 <        f.complete(one);
2525 <        assertTrue(f2.cancel(true));
2526 <        checkCompletedWithWrappedCancellationException(g);
2527 <    }
2528 <
2529 <    /**
2530 <     * runAfterBothAsync result completes normally after normal
2531 <     * completion of sources
2532 <     */
2533 <    public void testRunAfterBothAsyncE() {
2534 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
2535 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
2536 <        Noop r = new Noop();
2537 <        CompletableFuture<Void> g = f.runAfterBothAsync(f2, r, new ThreadExecutor());
2538 <        f.complete(one);
2539 <        checkIncomplete(g);
2540 <        f2.complete(two);
2541 <        checkCompletedNormally(g, null);
2542 <        assertTrue(r.ran);
2543 <    }
2544 <
2545 <    /**
2546 <     * runAfterBothAsync result completes exceptionally after exceptional
2547 <     * completion of source
2548 <     */
2026 <    public void testRunAfterBothAsync2E() {
2027 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
2028 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
2029 <        Noop r = new Noop();
2030 <        CompletableFuture<Void> g = f.runAfterBothAsync(f2, r, new ThreadExecutor());
2031 <        f.completeExceptionally(new CFException());
2032 <        f2.complete(two);
2033 <        checkCompletedWithWrappedCFException(g);
2034 <
2035 <        r = new Noop();
2036 <        f = new CompletableFuture<Integer>();
2037 <        f2 = new CompletableFuture<Integer>();
2038 <        g = f.runAfterBothAsync(f2, r, new ThreadExecutor());
2039 <        f.complete(one);
2040 <        f2.completeExceptionally(new CFException());
2041 <        checkCompletedWithWrappedCFException(g);
2042 <    }
2520 >        // unspecified behavior - both source completions available
2521 >        try {
2522 >            assertEquals(null, h0.join());
2523 >            rs[0].assertValue(v1);
2524 >        } catch (CompletionException ok) {
2525 >            checkCompletedWithWrappedException(h0, ex);
2526 >            rs[0].assertNotInvoked();
2527 >        }
2528 >        try {
2529 >            assertEquals(null, h1.join());
2530 >            rs[1].assertValue(v1);
2531 >        } catch (CompletionException ok) {
2532 >            checkCompletedWithWrappedException(h1, ex);
2533 >            rs[1].assertNotInvoked();
2534 >        }
2535 >        try {
2536 >            assertEquals(null, h2.join());
2537 >            rs[2].assertValue(v1);
2538 >        } catch (CompletionException ok) {
2539 >            checkCompletedWithWrappedException(h2, ex);
2540 >            rs[2].assertNotInvoked();
2541 >        }
2542 >        try {
2543 >            assertEquals(null, h3.join());
2544 >            rs[3].assertValue(v1);
2545 >        } catch (CompletionException ok) {
2546 >            checkCompletedWithWrappedException(h3, ex);
2547 >            rs[3].assertNotInvoked();
2548 >        }
2549  
2550 <    /**
2551 <     * runAfterBothAsync result completes exceptionally if action does
2552 <     */
2047 <    public void testRunAfterBothAsync3E() {
2048 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
2049 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
2050 <        FailingNoop r = new FailingNoop();
2051 <        CompletableFuture<Void> g = f.runAfterBothAsync(f2, r, new ThreadExecutor());
2052 <        f.complete(one);
2053 <        checkIncomplete(g);
2054 <        f2.complete(two);
2055 <        checkCompletedWithWrappedCFException(g);
2056 <    }
2550 >        checkCompletedNormally(f, v1);
2551 >        checkCompletedExceptionally(g, ex);
2552 >    }}
2553  
2554      /**
2555 <     * runAfterBothAsync result completes exceptionally if either source cancelled
2555 >     * acceptEither result completes exceptionally if either source cancelled
2556       */
2557 <    public void testRunAfterBothAsync4E() {
2558 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
2559 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
2560 <        Noop r = new Noop();
2561 <        CompletableFuture<Void> g = f.runAfterBothAsync(f2, r, new ThreadExecutor());
2562 <        assertTrue(f.cancel(true));
2563 <        f2.complete(two);
2564 <        checkCompletedWithWrappedCancellationException(g);
2565 <
2566 <        r = new Noop();
2567 <        f = new CompletableFuture<Integer>();
2568 <        f2 = new CompletableFuture<Integer>();
2569 <        g = f.runAfterBothAsync(f2, r, new ThreadExecutor());
2570 <        f.complete(one);
2571 <        assertTrue(f2.cancel(true));
2572 <        checkCompletedWithWrappedCancellationException(g);
2573 <    }
2557 >    public void testAcceptEither_sourceCancelled() {
2558 >        for (ExecutionMode m : ExecutionMode.values())
2559 >        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2560 >        for (Integer v1 : new Integer[] { 1, null })
2561 >    {
2562 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
2563 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
2564 >        final NoopConsumer[] rs = new NoopConsumer[6];
2565 >        for (int i = 0; i < rs.length; i++) rs[i] = new NoopConsumer(m);
2566 >
2567 >        final CompletableFuture<Void> h0 = m.acceptEither(f, g, rs[0]);
2568 >        final CompletableFuture<Void> h1 = m.acceptEither(g, f, rs[1]);
2569 >        checkIncomplete(h0);
2570 >        checkIncomplete(h1);
2571 >        rs[0].assertNotInvoked();
2572 >        rs[1].assertNotInvoked();
2573 >        f.cancel(mayInterruptIfRunning);
2574 >        checkCompletedWithWrappedCancellationException(h0);
2575 >        checkCompletedWithWrappedCancellationException(h1);
2576 >        final CompletableFuture<Void> h2 = m.acceptEither(f, g, rs[2]);
2577 >        final CompletableFuture<Void> h3 = m.acceptEither(g, f, rs[3]);
2578 >        checkCompletedWithWrappedCancellationException(h2);
2579 >        checkCompletedWithWrappedCancellationException(h3);
2580 >
2581 >        g.complete(v1);
2582 >
2583 >        // unspecified behavior - both source completions available
2584 >        final CompletableFuture<Void> h4 = m.acceptEither(f, g, rs[4]);
2585 >        final CompletableFuture<Void> h5 = m.acceptEither(g, f, rs[5]);
2586 >        try {
2587 >            assertNull(h4.join());
2588 >            rs[4].assertValue(v1);
2589 >        } catch (CompletionException ok) {
2590 >            checkCompletedWithWrappedCancellationException(h4);
2591 >            rs[4].assertNotInvoked();
2592 >        }
2593 >        try {
2594 >            assertNull(h5.join());
2595 >            rs[5].assertValue(v1);
2596 >        } catch (CompletionException ok) {
2597 >            checkCompletedWithWrappedCancellationException(h5);
2598 >            rs[5].assertNotInvoked();
2599 >        }
2600  
2601 <    /**
2602 <     * applyToEitherAsync result completes normally after normal
2603 <     * completion of sources
2604 <     */
2605 <    public void testApplyToEitherAsyncE() {
2606 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
2607 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
2608 <        CompletableFuture<Integer> g = f.applyToEitherAsync(f2, inc, new ThreadExecutor());
2087 <        f.complete(one);
2088 <        checkCompletedNormally(g, two);
2089 <
2090 <        f = new CompletableFuture<Integer>();
2091 <        f.complete(one);
2092 <        f2 = new CompletableFuture<Integer>();
2093 <        g = f.applyToEitherAsync(f2, inc, new ThreadExecutor());
2094 <        checkCompletedNormally(g, two);
2095 <    }
2601 >        checkCancelled(f);
2602 >        checkCompletedNormally(g, v1);
2603 >        checkCompletedWithWrappedCancellationException(h0);
2604 >        checkCompletedWithWrappedCancellationException(h1);
2605 >        checkCompletedWithWrappedCancellationException(h2);
2606 >        checkCompletedWithWrappedCancellationException(h3);
2607 >        for (int i = 0; i < 4; i++) rs[i].assertNotInvoked();
2608 >    }}
2609  
2610      /**
2611 <     * applyToEitherAsync result completes exceptionally after exceptional
2099 <     * completion of source
2611 >     * acceptEither result completes exceptionally if action does
2612       */
2613 <    public void testApplyToEitherAsync2E() {
2614 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
2615 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
2616 <        CompletableFuture<Integer> g = f.applyToEitherAsync(f2, inc, new ThreadExecutor());
2617 <        f.completeExceptionally(new CFException());
2618 <        checkCompletedWithWrappedCFException(g);
2619 <
2620 <        f = new CompletableFuture<Integer>();
2621 <        f2 = new CompletableFuture<Integer>();
2622 <        f2.completeExceptionally(new CFException());
2623 <        g = f.applyToEitherAsync(f2, inc, new ThreadExecutor());
2624 <        f.complete(one);
2625 <        checkCompletedWithWrappedCFException(g);
2626 <    }
2613 >    public void testAcceptEither_actionFailed() {
2614 >        for (ExecutionMode m : ExecutionMode.values())
2615 >        for (Integer v1 : new Integer[] { 1, null })
2616 >        for (Integer v2 : new Integer[] { 2, null })
2617 >    {
2618 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
2619 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
2620 >        final FailingConsumer[] rs = new FailingConsumer[6];
2621 >        for (int i = 0; i < rs.length; i++) rs[i] = new FailingConsumer(m);
2622 >
2623 >        final CompletableFuture<Void> h0 = m.acceptEither(f, g, rs[0]);
2624 >        final CompletableFuture<Void> h1 = m.acceptEither(g, f, rs[1]);
2625 >        f.complete(v1);
2626 >        final CompletableFuture<Void> h2 = m.acceptEither(f, g, rs[2]);
2627 >        final CompletableFuture<Void> h3 = m.acceptEither(g, f, rs[3]);
2628 >        checkCompletedWithWrappedCFException(h0);
2629 >        checkCompletedWithWrappedCFException(h1);
2630 >        checkCompletedWithWrappedCFException(h2);
2631 >        checkCompletedWithWrappedCFException(h3);
2632 >        for (int i = 0; i < 4; i++) rs[i].assertValue(v1);
2633 >
2634 >        g.complete(v2);
2635 >
2636 >        // unspecified behavior - both source completions available
2637 >        final CompletableFuture<Void> h4 = m.acceptEither(f, g, rs[4]);
2638 >        final CompletableFuture<Void> h5 = m.acceptEither(g, f, rs[5]);
2639 >
2640 >        checkCompletedWithWrappedCFException(h4);
2641 >        assertTrue(Objects.equals(v1, rs[4].value) ||
2642 >                   Objects.equals(v2, rs[4].value));
2643 >        checkCompletedWithWrappedCFException(h5);
2644 >        assertTrue(Objects.equals(v1, rs[5].value) ||
2645 >                   Objects.equals(v2, rs[5].value));
2646 >
2647 >        checkCompletedNormally(f, v1);
2648 >        checkCompletedNormally(g, v2);
2649 >    }}
2650  
2651      /**
2652 <     * applyToEitherAsync result completes exceptionally if action does
2652 >     * runAfterEither result completes normally after normal completion
2653 >     * of either source
2654       */
2655 <    public void testApplyToEitherAsync3E() {
2656 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
2657 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
2658 <        FailingFunction r = new FailingFunction();
2659 <        CompletableFuture<Integer> g = f.applyToEitherAsync(f2, r, new ThreadExecutor());
2660 <        f.complete(one);
2661 <        checkCompletedWithWrappedCFException(g);
2662 <    }
2655 >    public void testRunAfterEither_normalCompletion() {
2656 >        for (ExecutionMode m : ExecutionMode.values())
2657 >        for (Integer v1 : new Integer[] { 1, null })
2658 >        for (Integer v2 : new Integer[] { 2, null })
2659 >    {
2660 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
2661 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
2662 >        final Noop[] rs = new Noop[6];
2663 >        for (int i = 0; i < rs.length; i++) rs[i] = new Noop(m);
2664 >
2665 >        final CompletableFuture<Void> h0 = m.runAfterEither(f, g, rs[0]);
2666 >        final CompletableFuture<Void> h1 = m.runAfterEither(g, f, rs[1]);
2667 >        checkIncomplete(h0);
2668 >        checkIncomplete(h1);
2669 >        rs[0].assertNotInvoked();
2670 >        rs[1].assertNotInvoked();
2671 >        f.complete(v1);
2672 >        checkCompletedNormally(h0, null);
2673 >        checkCompletedNormally(h1, null);
2674 >        rs[0].assertInvoked();
2675 >        rs[1].assertInvoked();
2676 >        final CompletableFuture<Void> h2 = m.runAfterEither(f, g, rs[2]);
2677 >        final CompletableFuture<Void> h3 = m.runAfterEither(g, f, rs[3]);
2678 >        checkCompletedNormally(h2, null);
2679 >        checkCompletedNormally(h3, null);
2680 >        rs[2].assertInvoked();
2681 >        rs[3].assertInvoked();
2682 >
2683 >        g.complete(v2);
2684 >
2685 >        final CompletableFuture<Void> h4 = m.runAfterEither(f, g, rs[4]);
2686 >        final CompletableFuture<Void> h5 = m.runAfterEither(g, f, rs[5]);
2687 >
2688 >        checkCompletedNormally(f, v1);
2689 >        checkCompletedNormally(g, v2);
2690 >        checkCompletedNormally(h0, null);
2691 >        checkCompletedNormally(h1, null);
2692 >        checkCompletedNormally(h2, null);
2693 >        checkCompletedNormally(h3, null);
2694 >        checkCompletedNormally(h4, null);
2695 >        checkCompletedNormally(h5, null);
2696 >        for (int i = 0; i < 6; i++) rs[i].assertInvoked();
2697 >    }}
2698  
2699      /**
2700 <     * applyToEitherAsync result completes exceptionally if either source cancelled
2700 >     * runAfterEither result completes exceptionally after exceptional
2701 >     * completion of either source
2702       */
2703 <    public void testApplyToEitherAsync4E() {
2704 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
2705 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
2706 <        CompletableFuture<Integer> g = f.applyToEitherAsync(f2, inc, new ThreadExecutor());
2707 <        assertTrue(f.cancel(true));
2708 <        checkCompletedWithWrappedCancellationException(g);
2703 >    public void testRunAfterEither_exceptionalCompletion() {
2704 >        for (ExecutionMode m : ExecutionMode.values())
2705 >        for (Integer v1 : new Integer[] { 1, null })
2706 >    {
2707 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
2708 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
2709 >        final CFException ex = new CFException();
2710 >        final Noop[] rs = new Noop[6];
2711 >        for (int i = 0; i < rs.length; i++) rs[i] = new Noop(m);
2712 >
2713 >        final CompletableFuture<Void> h0 = m.runAfterEither(f, g, rs[0]);
2714 >        final CompletableFuture<Void> h1 = m.runAfterEither(g, f, rs[1]);
2715 >        checkIncomplete(h0);
2716 >        checkIncomplete(h1);
2717 >        rs[0].assertNotInvoked();
2718 >        rs[1].assertNotInvoked();
2719 >        assertTrue(f.completeExceptionally(ex));
2720 >        checkCompletedWithWrappedException(h0, ex);
2721 >        checkCompletedWithWrappedException(h1, ex);
2722 >        final CompletableFuture<Void> h2 = m.runAfterEither(f, g, rs[2]);
2723 >        final CompletableFuture<Void> h3 = m.runAfterEither(g, f, rs[3]);
2724 >        checkCompletedWithWrappedException(h2, ex);
2725 >        checkCompletedWithWrappedException(h3, ex);
2726 >
2727 >        assertTrue(g.complete(v1));
2728 >
2729 >        // unspecified behavior - both source completions available
2730 >        final CompletableFuture<Void> h4 = m.runAfterEither(f, g, rs[4]);
2731 >        final CompletableFuture<Void> h5 = m.runAfterEither(g, f, rs[5]);
2732 >        try {
2733 >            assertNull(h4.join());
2734 >            rs[4].assertInvoked();
2735 >        } catch (CompletionException ok) {
2736 >            checkCompletedWithWrappedException(h4, ex);
2737 >            rs[4].assertNotInvoked();
2738 >        }
2739 >        try {
2740 >            assertNull(h5.join());
2741 >            rs[5].assertInvoked();
2742 >        } catch (CompletionException ok) {
2743 >            checkCompletedWithWrappedException(h5, ex);
2744 >            rs[5].assertNotInvoked();
2745 >        }
2746  
2747 <        f = new CompletableFuture<Integer>();
2748 <        f2 = new CompletableFuture<Integer>();
2749 <        assertTrue(f2.cancel(true));
2750 <        g = f.applyToEitherAsync(f2, inc, new ThreadExecutor());
2751 <        checkCompletedWithWrappedCancellationException(g);
2752 <    }
2747 >        checkCompletedExceptionally(f, ex);
2748 >        checkCompletedNormally(g, v1);
2749 >        checkCompletedWithWrappedException(h0, ex);
2750 >        checkCompletedWithWrappedException(h1, ex);
2751 >        checkCompletedWithWrappedException(h2, ex);
2752 >        checkCompletedWithWrappedException(h3, ex);
2753 >        checkCompletedWithWrappedException(h4, ex);
2754 >        for (int i = 0; i < 4; i++) rs[i].assertNotInvoked();
2755 >    }}
2756 >
2757 >    public void testRunAfterEither_exceptionalCompletion2() {
2758 >        for (ExecutionMode m : ExecutionMode.values())
2759 >        for (boolean fFirst : new boolean[] { true, false })
2760 >        for (Integer v1 : new Integer[] { 1, null })
2761 >    {
2762 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
2763 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
2764 >        final CFException ex = new CFException();
2765 >        final Noop[] rs = new Noop[6];
2766 >        for (int i = 0; i < rs.length; i++) rs[i] = new Noop(m);
2767 >
2768 >        final CompletableFuture<Void> h0 = m.runAfterEither(f, g, rs[0]);
2769 >        final CompletableFuture<Void> h1 = m.runAfterEither(g, f, rs[1]);
2770 >        assertTrue( fFirst ? f.complete(v1) : g.completeExceptionally(ex));
2771 >        assertTrue(!fFirst ? f.complete(v1) : g.completeExceptionally(ex));
2772 >        final CompletableFuture<Void> h2 = m.runAfterEither(f, g, rs[2]);
2773 >        final CompletableFuture<Void> h3 = m.runAfterEither(g, f, rs[3]);
2774  
2775 <    /**
2776 <     * acceptEitherAsync result completes normally after normal
2777 <     * completion of sources
2778 <     */
2779 <    public void testAcceptEitherAsyncE() {
2780 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
2781 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
2782 <        IncAction r = new IncAction();
2783 <        CompletableFuture<Void> g = f.acceptEitherAsync(f2, r, new ThreadExecutor());
2784 <        f.complete(one);
2785 <        checkCompletedNormally(g, null);
2786 <        assertEquals(r.value, 2);
2775 >        // unspecified behavior - both source completions available
2776 >        try {
2777 >            assertEquals(null, h0.join());
2778 >            rs[0].assertInvoked();
2779 >        } catch (CompletionException ok) {
2780 >            checkCompletedWithWrappedException(h0, ex);
2781 >            rs[0].assertNotInvoked();
2782 >        }
2783 >        try {
2784 >            assertEquals(null, h1.join());
2785 >            rs[1].assertInvoked();
2786 >        } catch (CompletionException ok) {
2787 >            checkCompletedWithWrappedException(h1, ex);
2788 >            rs[1].assertNotInvoked();
2789 >        }
2790 >        try {
2791 >            assertEquals(null, h2.join());
2792 >            rs[2].assertInvoked();
2793 >        } catch (CompletionException ok) {
2794 >            checkCompletedWithWrappedException(h2, ex);
2795 >            rs[2].assertNotInvoked();
2796 >        }
2797 >        try {
2798 >            assertEquals(null, h3.join());
2799 >            rs[3].assertInvoked();
2800 >        } catch (CompletionException ok) {
2801 >            checkCompletedWithWrappedException(h3, ex);
2802 >            rs[3].assertNotInvoked();
2803 >        }
2804  
2805 <        r = new IncAction();
2806 <        f = new CompletableFuture<Integer>();
2807 <        f.complete(one);
2161 <        f2 = new CompletableFuture<Integer>();
2162 <        g = f.acceptEitherAsync(f2, r, new ThreadExecutor());
2163 <        checkCompletedNormally(g, null);
2164 <        assertEquals(r.value, 2);
2165 <    }
2805 >        checkCompletedNormally(f, v1);
2806 >        checkCompletedExceptionally(g, ex);
2807 >    }}
2808  
2809      /**
2810 <     * acceptEitherAsync result completes exceptionally after exceptional
2169 <     * completion of source
2810 >     * runAfterEither result completes exceptionally if either source cancelled
2811       */
2812 <    public void testAcceptEitherAsync2E() {
2813 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
2814 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
2815 <        IncAction r = new IncAction();
2816 <        CompletableFuture<Void> g = f.acceptEitherAsync(f2, r, new ThreadExecutor());
2817 <        f.completeExceptionally(new CFException());
2818 <        checkCompletedWithWrappedCFException(g);
2819 <
2820 <        r = new IncAction();
2821 <        f = new CompletableFuture<Integer>();
2822 <        f2 = new CompletableFuture<Integer>();
2823 <        f2.completeExceptionally(new CFException());
2824 <        g = f.acceptEitherAsync(f2, r, new ThreadExecutor());
2825 <        f.complete(one);
2826 <        checkCompletedWithWrappedCFException(g);
2827 <    }
2812 >    public void testRunAfterEither_sourceCancelled() {
2813 >        for (ExecutionMode m : ExecutionMode.values())
2814 >        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2815 >        for (Integer v1 : new Integer[] { 1, null })
2816 >    {
2817 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
2818 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
2819 >        final Noop[] rs = new Noop[6];
2820 >        for (int i = 0; i < rs.length; i++) rs[i] = new Noop(m);
2821 >
2822 >        final CompletableFuture<Void> h0 = m.runAfterEither(f, g, rs[0]);
2823 >        final CompletableFuture<Void> h1 = m.runAfterEither(g, f, rs[1]);
2824 >        checkIncomplete(h0);
2825 >        checkIncomplete(h1);
2826 >        rs[0].assertNotInvoked();
2827 >        rs[1].assertNotInvoked();
2828 >        f.cancel(mayInterruptIfRunning);
2829 >        checkCompletedWithWrappedCancellationException(h0);
2830 >        checkCompletedWithWrappedCancellationException(h1);
2831 >        final CompletableFuture<Void> h2 = m.runAfterEither(f, g, rs[2]);
2832 >        final CompletableFuture<Void> h3 = m.runAfterEither(g, f, rs[3]);
2833 >        checkCompletedWithWrappedCancellationException(h2);
2834 >        checkCompletedWithWrappedCancellationException(h3);
2835 >
2836 >        assertTrue(g.complete(v1));
2837 >
2838 >        // unspecified behavior - both source completions available
2839 >        final CompletableFuture<Void> h4 = m.runAfterEither(f, g, rs[4]);
2840 >        final CompletableFuture<Void> h5 = m.runAfterEither(g, f, rs[5]);
2841 >        try {
2842 >            assertNull(h4.join());
2843 >            rs[4].assertInvoked();
2844 >        } catch (CompletionException ok) {
2845 >            checkCompletedWithWrappedCancellationException(h4);
2846 >            rs[4].assertNotInvoked();
2847 >        }
2848 >        try {
2849 >            assertNull(h5.join());
2850 >            rs[5].assertInvoked();
2851 >        } catch (CompletionException ok) {
2852 >            checkCompletedWithWrappedCancellationException(h5);
2853 >            rs[5].assertNotInvoked();
2854 >        }
2855  
2856 <    /**
2857 <     * acceptEitherAsync result completes exceptionally if action does
2858 <     */
2859 <    public void testAcceptEitherAsync3E() {
2860 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
2861 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
2862 <        FailingConsumer r = new FailingConsumer();
2863 <        CompletableFuture<Void> g = f.acceptEitherAsync(f2, r, new ThreadExecutor());
2196 <        f.complete(one);
2197 <        checkCompletedWithWrappedCFException(g);
2198 <    }
2856 >        checkCancelled(f);
2857 >        checkCompletedNormally(g, v1);
2858 >        checkCompletedWithWrappedCancellationException(h0);
2859 >        checkCompletedWithWrappedCancellationException(h1);
2860 >        checkCompletedWithWrappedCancellationException(h2);
2861 >        checkCompletedWithWrappedCancellationException(h3);
2862 >        for (int i = 0; i < 4; i++) rs[i].assertNotInvoked();
2863 >    }}
2864  
2865      /**
2866 <     * acceptEitherAsync result completes exceptionally if either
2202 <     * source cancelled
2866 >     * runAfterEither result completes exceptionally if action does
2867       */
2868 <    public void testAcceptEitherAsync4E() {
2869 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
2870 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
2871 <        IncAction r = new IncAction();
2872 <        CompletableFuture<Void> g = f.acceptEitherAsync(f2, r, new ThreadExecutor());
2873 <        assertTrue(f.cancel(true));
2874 <        checkCompletedWithWrappedCancellationException(g);
2875 <
2876 <        r = new IncAction();
2877 <        f = new CompletableFuture<Integer>();
2878 <        f2 = new CompletableFuture<Integer>();
2879 <        assertTrue(f2.cancel(true));
2880 <        g = f.acceptEitherAsync(f2, r, new ThreadExecutor());
2881 <        checkCompletedWithWrappedCancellationException(g);
2882 <    }
2868 >    public void testRunAfterEither_actionFailed() {
2869 >        for (ExecutionMode m : ExecutionMode.values())
2870 >        for (Integer v1 : new Integer[] { 1, null })
2871 >        for (Integer v2 : new Integer[] { 2, null })
2872 >    {
2873 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
2874 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
2875 >        final FailingRunnable[] rs = new FailingRunnable[6];
2876 >        for (int i = 0; i < rs.length; i++) rs[i] = new FailingRunnable(m);
2877 >
2878 >        final CompletableFuture<Void> h0 = m.runAfterEither(f, g, rs[0]);
2879 >        final CompletableFuture<Void> h1 = m.runAfterEither(g, f, rs[1]);
2880 >        assertTrue(f.complete(v1));
2881 >        final CompletableFuture<Void> h2 = m.runAfterEither(f, g, rs[2]);
2882 >        final CompletableFuture<Void> h3 = m.runAfterEither(g, f, rs[3]);
2883 >        checkCompletedWithWrappedCFException(h0);
2884 >        checkCompletedWithWrappedCFException(h1);
2885 >        checkCompletedWithWrappedCFException(h2);
2886 >        checkCompletedWithWrappedCFException(h3);
2887 >        for (int i = 0; i < 4; i++) rs[i].assertInvoked();
2888 >        assertTrue(g.complete(v2));
2889 >        final CompletableFuture<Void> h4 = m.runAfterEither(f, g, rs[4]);
2890 >        final CompletableFuture<Void> h5 = m.runAfterEither(g, f, rs[5]);
2891 >        checkCompletedWithWrappedCFException(h4);
2892 >        checkCompletedWithWrappedCFException(h5);
2893 >
2894 >        checkCompletedNormally(f, v1);
2895 >        checkCompletedNormally(g, v2);
2896 >        for (int i = 0; i < 6; i++) rs[i].assertInvoked();
2897 >    }}
2898  
2899      /**
2900 <     * runAfterEitherAsync result completes normally after normal
2222 <     * completion of sources
2900 >     * thenCompose result completes normally after normal completion of source
2901       */
2902 <    public void testRunAfterEitherAsyncE() {
2903 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
2904 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
2905 <        Noop r = new Noop();
2906 <        CompletableFuture<Void> g = f.runAfterEitherAsync(f2, r, new ThreadExecutor());
2907 <        f.complete(one);
2908 <        checkCompletedNormally(g, null);
2909 <        assertTrue(r.ran);
2910 <
2911 <        r = new Noop();
2912 <        f = new CompletableFuture<Integer>();
2913 <        f.complete(one);
2914 <        f2 = new CompletableFuture<Integer>();
2915 <        g = f.runAfterEitherAsync(f2, r, new ThreadExecutor());
2916 <        checkCompletedNormally(g, null);
2239 <        assertTrue(r.ran);
2240 <    }
2902 >    public void testThenCompose_normalCompletion() {
2903 >        for (ExecutionMode m : ExecutionMode.values())
2904 >        for (boolean createIncomplete : new boolean[] { true, false })
2905 >        for (Integer v1 : new Integer[] { 1, null })
2906 >    {
2907 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
2908 >        final CompletableFutureInc r = new CompletableFutureInc(m);
2909 >        if (!createIncomplete) assertTrue(f.complete(v1));
2910 >        final CompletableFuture<Integer> g = m.thenCompose(f, r);
2911 >        if (createIncomplete) assertTrue(f.complete(v1));
2912 >
2913 >        checkCompletedNormally(g, inc(v1));
2914 >        checkCompletedNormally(f, v1);
2915 >        r.assertValue(v1);
2916 >    }}
2917  
2918      /**
2919 <     * runAfterEitherAsync result completes exceptionally after exceptional
2919 >     * thenCompose result completes exceptionally after exceptional
2920       * completion of source
2921       */
2922 <    public void testRunAfterEitherAsync2E() {
2923 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
2924 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
2925 <        Noop r = new Noop();
2926 <        CompletableFuture<Void> g = f.runAfterEitherAsync(f2, r, new ThreadExecutor());
2927 <        f.completeExceptionally(new CFException());
2928 <        checkCompletedWithWrappedCFException(g);
2929 <
2930 <        r = new Noop();
2931 <        f = new CompletableFuture<Integer>();
2932 <        f2 = new CompletableFuture<Integer>();
2933 <        f2.completeExceptionally(new CFException());
2934 <        g = f.runAfterEitherAsync(f2, r, new ThreadExecutor());
2935 <        f.complete(one);
2936 <        checkCompletedWithWrappedCFException(g);
2261 <    }
2262 <
2263 <    /**
2264 <     * runAfterEitherAsync result completes exceptionally if action does
2265 <     */
2266 <    public void testRunAfterEitherAsync3E() {
2267 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
2268 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
2269 <        FailingNoop r = new FailingNoop();
2270 <        CompletableFuture<Void> g = f.runAfterEitherAsync(f2, r, new ThreadExecutor());
2271 <        f.complete(one);
2272 <        checkCompletedWithWrappedCFException(g);
2273 <    }
2274 <
2275 <    /**
2276 <     * runAfterEitherAsync result completes exceptionally if either
2277 <     * source cancelled
2278 <     */
2279 <    public void testRunAfterEitherAsync4E() {
2280 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
2281 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
2282 <        Noop r = new Noop();
2283 <        CompletableFuture<Void> g = f.runAfterEitherAsync(f2, r, new ThreadExecutor());
2284 <        assertTrue(f.cancel(true));
2285 <        checkCompletedWithWrappedCancellationException(g);
2286 <
2287 <        r = new Noop();
2288 <        f = new CompletableFuture<Integer>();
2289 <        f2 = new CompletableFuture<Integer>();
2290 <        assertTrue(f2.cancel(true));
2291 <        g = f.runAfterEitherAsync(f2, r, new ThreadExecutor());
2292 <        checkCompletedWithWrappedCancellationException(g);
2293 <    }
2922 >    public void testThenCompose_exceptionalCompletion() {
2923 >        for (ExecutionMode m : ExecutionMode.values())
2924 >        for (boolean createIncomplete : new boolean[] { true, false })
2925 >    {
2926 >        final CFException ex = new CFException();
2927 >        final CompletableFutureInc r = new CompletableFutureInc(m);
2928 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
2929 >        if (!createIncomplete) f.completeExceptionally(ex);
2930 >        final CompletableFuture<Integer> g = m.thenCompose(f, r);
2931 >        if (createIncomplete) f.completeExceptionally(ex);
2932 >
2933 >        checkCompletedWithWrappedException(g, ex);
2934 >        checkCompletedExceptionally(f, ex);
2935 >        r.assertNotInvoked();
2936 >    }}
2937  
2938      /**
2939 <     * thenComposeAsync result completes normally after normal
2297 <     * completion of source
2939 >     * thenCompose result completes exceptionally if action does
2940       */
2941 <    public void testThenComposeAsyncE() {
2942 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
2943 <        CompletableFutureInc r = new CompletableFutureInc();
2944 <        CompletableFuture<Integer> g = f.thenComposeAsync(r, new ThreadExecutor());
2945 <        f.complete(one);
2946 <        checkCompletedNormally(g, two);
2947 <    }
2941 >    public void testThenCompose_actionFailed() {
2942 >        for (ExecutionMode m : ExecutionMode.values())
2943 >        for (boolean createIncomplete : new boolean[] { true, false })
2944 >        for (Integer v1 : new Integer[] { 1, null })
2945 >    {
2946 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
2947 >        final FailingCompletableFutureFunction r
2948 >            = new FailingCompletableFutureFunction(m);
2949 >        if (!createIncomplete) assertTrue(f.complete(v1));
2950 >        final CompletableFuture<Integer> g = m.thenCompose(f, r);
2951 >        if (createIncomplete) assertTrue(f.complete(v1));
2952  
2307    /**
2308     * thenComposeAsync result completes exceptionally after
2309     * exceptional completion of source
2310     */
2311    public void testThenComposeAsync2E() {
2312        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
2313        CompletableFutureInc r = new CompletableFutureInc();
2314        CompletableFuture<Integer> g = f.thenComposeAsync(r, new ThreadExecutor());
2315        f.completeExceptionally(new CFException());
2953          checkCompletedWithWrappedCFException(g);
2954 <    }
2954 >        checkCompletedNormally(f, v1);
2955 >    }}
2956  
2957      /**
2958 <     * thenComposeAsync result completes exceptionally if action does
2958 >     * thenCompose result completes exceptionally if source cancelled
2959       */
2960 <    public void testThenComposeAsync3E() {
2961 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
2962 <        FailingCompletableFutureFunction r = new FailingCompletableFutureFunction();
2963 <        CompletableFuture<Integer> g = f.thenComposeAsync(r, new ThreadExecutor());
2964 <        f.complete(one);
2965 <        checkCompletedWithWrappedCFException(g);
2966 <    }
2960 >    public void testThenCompose_sourceCancelled() {
2961 >        for (ExecutionMode m : ExecutionMode.values())
2962 >        for (boolean createIncomplete : new boolean[] { true, false })
2963 >        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2964 >    {
2965 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
2966 >        final CompletableFutureInc r = new CompletableFutureInc(m);
2967 >        if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
2968 >        final CompletableFuture<Integer> g = m.thenCompose(f, r);
2969 >        if (createIncomplete) {
2970 >            checkIncomplete(g);
2971 >            assertTrue(f.cancel(mayInterruptIfRunning));
2972 >        }
2973  
2330    /**
2331     * thenComposeAsync result completes exceptionally if source cancelled
2332     */
2333    public void testThenComposeAsync4E() {
2334        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
2335        CompletableFutureInc r = new CompletableFutureInc();
2336        CompletableFuture<Integer> g = f.thenComposeAsync(r, new ThreadExecutor());
2337        assertTrue(f.cancel(true));
2974          checkCompletedWithWrappedCancellationException(g);
2975 <    }
2975 >        checkCancelled(f);
2976 >    }}
2977  
2978      // other static methods
2979  
# Line 2345 | Line 2982 | public class CompletableFutureTest exten
2982       * with the value null
2983       */
2984      public void testAllOf_empty() throws Exception {
2985 <        CompletableFuture<?> f = CompletableFuture.allOf();
2985 >        CompletableFuture<Void> f = CompletableFuture.allOf();
2986          checkCompletedNormally(f, null);
2987      }
2988  
2989      /**
2990 <     * allOf returns a future completed when all components complete
2990 >     * allOf returns a future completed normally with the value null
2991 >     * when all components complete normally
2992       */
2993 <    public void testAllOf() throws Exception {
2994 <        for (int k = 1; k < 20; ++k) {
2995 <            CompletableFuture[] fs = new CompletableFuture[k];
2996 <            for (int i = 0; i < k; ++i)
2997 <                fs[i] = new CompletableFuture<Integer>();
2993 >    public void testAllOf_normal() throws Exception {
2994 >        for (int k = 1; k < 10; k++) {
2995 >            CompletableFuture<Integer>[] fs
2996 >                = (CompletableFuture<Integer>[]) new CompletableFuture[k];
2997 >            for (int i = 0; i < k; i++)
2998 >                fs[i] = new CompletableFuture<>();
2999 >            CompletableFuture<Void> f = CompletableFuture.allOf(fs);
3000 >            for (int i = 0; i < k; i++) {
3001 >                checkIncomplete(f);
3002 >                checkIncomplete(CompletableFuture.allOf(fs));
3003 >                fs[i].complete(one);
3004 >            }
3005 >            checkCompletedNormally(f, null);
3006 >            checkCompletedNormally(CompletableFuture.allOf(fs), null);
3007 >        }
3008 >    }
3009 >
3010 >    public void testAllOf_backwards() throws Exception {
3011 >        for (int k = 1; k < 10; k++) {
3012 >            CompletableFuture<Integer>[] fs
3013 >                = (CompletableFuture<Integer>[]) new CompletableFuture[k];
3014 >            for (int i = 0; i < k; i++)
3015 >                fs[i] = new CompletableFuture<>();
3016              CompletableFuture<Void> f = CompletableFuture.allOf(fs);
3017 <            for (int i = 0; i < k; ++i) {
3017 >            for (int i = k - 1; i >= 0; i--) {
3018                  checkIncomplete(f);
3019 +                checkIncomplete(CompletableFuture.allOf(fs));
3020                  fs[i].complete(one);
3021              }
3022              checkCompletedNormally(f, null);
3023 +            checkCompletedNormally(CompletableFuture.allOf(fs), null);
3024 +        }
3025 +    }
3026 +
3027 +    public void testAllOf_exceptional() throws Exception {
3028 +        for (int k = 1; k < 10; k++) {
3029 +            CompletableFuture<Integer>[] fs
3030 +                = (CompletableFuture<Integer>[]) new CompletableFuture[k];
3031 +            CFException ex = new CFException();
3032 +            for (int i = 0; i < k; i++)
3033 +                fs[i] = new CompletableFuture<>();
3034 +            CompletableFuture<Void> f = CompletableFuture.allOf(fs);
3035 +            for (int i = 0; i < k; i++) {
3036 +                checkIncomplete(f);
3037 +                checkIncomplete(CompletableFuture.allOf(fs));
3038 +                if (i != k/2) {
3039 +                    fs[i].complete(i);
3040 +                    checkCompletedNormally(fs[i], i);
3041 +                } else {
3042 +                    fs[i].completeExceptionally(ex);
3043 +                    checkCompletedExceptionally(fs[i], ex);
3044 +                }
3045 +            }
3046 +            checkCompletedWithWrappedException(f, ex);
3047 +            checkCompletedWithWrappedException(CompletableFuture.allOf(fs), ex);
3048          }
3049      }
3050  
# Line 2370 | Line 3052 | public class CompletableFutureTest exten
3052       * anyOf(no component futures) returns an incomplete future
3053       */
3054      public void testAnyOf_empty() throws Exception {
3055 <        CompletableFuture<?> f = CompletableFuture.anyOf();
3055 >        for (Integer v1 : new Integer[] { 1, null })
3056 >    {
3057 >        CompletableFuture<Object> f = CompletableFuture.anyOf();
3058          checkIncomplete(f);
3059 +
3060 +        f.complete(v1);
3061 +        checkCompletedNormally(f, v1);
3062 +    }}
3063 +
3064 +    /**
3065 +     * anyOf returns a future completed normally with a value when
3066 +     * a component future does
3067 +     */
3068 +    public void testAnyOf_normal() throws Exception {
3069 +        for (int k = 0; k < 10; k++) {
3070 +            CompletableFuture[] fs = new CompletableFuture[k];
3071 +            for (int i = 0; i < k; i++)
3072 +                fs[i] = new CompletableFuture<>();
3073 +            CompletableFuture<Object> f = CompletableFuture.anyOf(fs);
3074 +            checkIncomplete(f);
3075 +            for (int i = 0; i < k; i++) {
3076 +                fs[i].complete(i);
3077 +                checkCompletedNormally(f, 0);
3078 +                int x = (int) CompletableFuture.anyOf(fs).join();
3079 +                assertTrue(0 <= x && x <= i);
3080 +            }
3081 +        }
3082 +    }
3083 +    public void testAnyOf_normal_backwards() throws Exception {
3084 +        for (int k = 0; k < 10; k++) {
3085 +            CompletableFuture[] fs = new CompletableFuture[k];
3086 +            for (int i = 0; i < k; i++)
3087 +                fs[i] = new CompletableFuture<>();
3088 +            CompletableFuture<Object> f = CompletableFuture.anyOf(fs);
3089 +            checkIncomplete(f);
3090 +            for (int i = k - 1; i >= 0; i--) {
3091 +                fs[i].complete(i);
3092 +                checkCompletedNormally(f, k - 1);
3093 +                int x = (int) CompletableFuture.anyOf(fs).join();
3094 +                assertTrue(i <= x && x <= k - 1);
3095 +            }
3096 +        }
3097      }
3098  
3099      /**
3100 <     * anyOf returns a future completed when any components complete
3100 >     * anyOf result completes exceptionally when any component does.
3101       */
3102 <    public void testAnyOf() throws Exception {
3103 <        for (int k = 1; k < 20; ++k) {
3102 >    public void testAnyOf_exceptional() throws Exception {
3103 >        for (int k = 0; k < 10; k++) {
3104              CompletableFuture[] fs = new CompletableFuture[k];
3105 <            for (int i = 0; i < k; ++i)
3106 <                fs[i] = new CompletableFuture<Integer>();
3105 >            CFException[] exs = new CFException[k];
3106 >            for (int i = 0; i < k; i++) {
3107 >                fs[i] = new CompletableFuture<>();
3108 >                exs[i] = new CFException();
3109 >            }
3110              CompletableFuture<Object> f = CompletableFuture.anyOf(fs);
3111              checkIncomplete(f);
3112 <            for (int i = 0; i < k; ++i) {
3113 <                fs[i].complete(one);
3114 <                checkCompletedNormally(f, one);
3112 >            for (int i = 0; i < k; i++) {
3113 >                fs[i].completeExceptionally(exs[i]);
3114 >                checkCompletedWithWrappedException(f, exs[0]);
3115 >                checkCompletedWithWrappedCFException(CompletableFuture.anyOf(fs));
3116 >            }
3117 >        }
3118 >    }
3119 >
3120 >    public void testAnyOf_exceptional_backwards() throws Exception {
3121 >        for (int k = 0; k < 10; k++) {
3122 >            CompletableFuture[] fs = new CompletableFuture[k];
3123 >            CFException[] exs = new CFException[k];
3124 >            for (int i = 0; i < k; i++) {
3125 >                fs[i] = new CompletableFuture<>();
3126 >                exs[i] = new CFException();
3127 >            }
3128 >            CompletableFuture<Object> f = CompletableFuture.anyOf(fs);
3129 >            checkIncomplete(f);
3130 >            for (int i = k - 1; i >= 0; i--) {
3131 >                fs[i].completeExceptionally(exs[i]);
3132 >                checkCompletedWithWrappedException(f, exs[k - 1]);
3133 >                checkCompletedWithWrappedCFException(CompletableFuture.anyOf(fs));
3134              }
3135          }
3136      }
# Line 2395 | Line 3139 | public class CompletableFutureTest exten
3139       * Completion methods throw NullPointerException with null arguments
3140       */
3141      public void testNPE() {
3142 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
3143 <        CompletableFuture<Integer> g = new CompletableFuture<Integer>();
3142 >        CompletableFuture<Integer> f = new CompletableFuture<>();
3143 >        CompletableFuture<Integer> g = new CompletableFuture<>();
3144          CompletableFuture<Integer> nullFuture = (CompletableFuture<Integer>)null;
3145          CompletableFuture<?> h;
3146 <        Executor exec = new ThreadExecutor();
3146 >        ThreadExecutor exec = new ThreadExecutor();
3147  
3148          Runnable[] throwingActions = {
3149 <            () -> { CompletableFuture.supplyAsync(null); },
3150 <            () -> { CompletableFuture.supplyAsync(null, exec); },
3151 <            () -> { CompletableFuture.supplyAsync(() -> one, null); },
3152 <
3153 <            () -> { CompletableFuture.runAsync(null); },
3154 <            () -> { CompletableFuture.runAsync(null, exec); },
3155 <            () -> { CompletableFuture.runAsync(() -> {}, null); },
3156 <
3157 <            () -> { f.completeExceptionally(null); },
3158 <
3159 <            () -> { f.thenApply(null); },
3160 <            () -> { f.thenApplyAsync(null); },
3161 <            () -> { f.thenApplyAsync((x) -> x, null); },
3162 <            () -> { f.thenApplyAsync(null, exec); },
3163 <
3164 <            () -> { f.thenAccept(null); },
3165 <            () -> { f.thenAcceptAsync(null); },
3166 <            () -> { f.thenAcceptAsync((x) -> { ; }, null); },
3167 <            () -> { f.thenAcceptAsync(null, exec); },
3168 <
3169 <            () -> { f.thenRun(null); },
3170 <            () -> { f.thenRunAsync(null); },
3171 <            () -> { f.thenRunAsync(() -> { ; }, null); },
3172 <            () -> { f.thenRunAsync(null, exec); },
3173 <
3174 <            () -> { f.thenCombine(g, null); },
3175 <            () -> { f.thenCombineAsync(g, null); },
3176 <            () -> { f.thenCombineAsync(g, null, exec); },
3177 <            () -> { f.thenCombine(nullFuture, (x, y) -> x); },
3178 <            () -> { f.thenCombineAsync(nullFuture, (x, y) -> x); },
3179 <            () -> { f.thenCombineAsync(nullFuture, (x, y) -> x, exec); },
3180 <            () -> { f.thenCombineAsync(g, (x, y) -> x, null); },
3181 <
3182 <            () -> { f.thenAcceptBoth(g, null); },
3183 <            () -> { f.thenAcceptBothAsync(g, null); },
3184 <            () -> { f.thenAcceptBothAsync(g, null, exec); },
3185 <            () -> { f.thenAcceptBoth(nullFuture, (x, y) -> {}); },
3186 <            () -> { f.thenAcceptBothAsync(nullFuture, (x, y) -> {}); },
3187 <            () -> { f.thenAcceptBothAsync(nullFuture, (x, y) -> {}, exec); },
3188 <            () -> { f.thenAcceptBothAsync(g, (x, y) -> {}, null); },
3189 <
3190 <            () -> { f.runAfterBoth(g, null); },
3191 <            () -> { f.runAfterBothAsync(g, null); },
3192 <            () -> { f.runAfterBothAsync(g, null, exec); },
3193 <            () -> { f.runAfterBoth(nullFuture, () -> {}); },
3194 <            () -> { f.runAfterBothAsync(nullFuture, () -> {}); },
3195 <            () -> { f.runAfterBothAsync(nullFuture, () -> {}, exec); },
3196 <            () -> { f.runAfterBothAsync(g, () -> {}, null); },
3197 <
3198 <            () -> { f.applyToEither(g, null); },
3199 <            () -> { f.applyToEitherAsync(g, null); },
3200 <            () -> { f.applyToEitherAsync(g, null, exec); },
3201 <            () -> { f.applyToEither(nullFuture, (x) -> x); },
3202 <            () -> { f.applyToEitherAsync(nullFuture, (x) -> x); },
3203 <            () -> { f.applyToEitherAsync(nullFuture, (x) -> x, exec); },
3204 <            () -> { f.applyToEitherAsync(g, (x) -> x, null); },
3205 <
3206 <            () -> { f.acceptEither(g, null); },
3207 <            () -> { f.acceptEitherAsync(g, null); },
3208 <            () -> { f.acceptEitherAsync(g, null, exec); },
3209 <            () -> { f.acceptEither(nullFuture, (x) -> {}); },
3210 <            () -> { f.acceptEitherAsync(nullFuture, (x) -> {}); },
3211 <            () -> { f.acceptEitherAsync(nullFuture, (x) -> {}, exec); },
3212 <            () -> { f.acceptEitherAsync(g, (x) -> {}, null); },
3213 <
3214 <            () -> { f.runAfterEither(g, null); },
3215 <            () -> { f.runAfterEitherAsync(g, null); },
3216 <            () -> { f.runAfterEitherAsync(g, null, exec); },
3217 <            () -> { f.runAfterEither(nullFuture, () -> {}); },
3218 <            () -> { f.runAfterEitherAsync(nullFuture, () -> {}); },
3219 <            () -> { f.runAfterEitherAsync(nullFuture, () -> {}, exec); },
3220 <            () -> { f.runAfterEitherAsync(g, () -> {}, null); },
3221 <
3222 <            () -> { f.thenCompose(null); },
3223 <            () -> { f.thenComposeAsync(null); },
3224 <            () -> { f.thenComposeAsync(new CompletableFutureInc(), null); },
3225 <            () -> { f.thenComposeAsync(null, exec); },
3226 <
3227 <            () -> { f.exceptionally(null); },
3228 <
3229 <            () -> { f.handle(null); },
3230 <
3231 <            () -> { CompletableFuture.allOf((CompletableFuture<?>)null); },
3232 <            () -> { CompletableFuture.allOf((CompletableFuture<?>[])null); },
3233 <            () -> { CompletableFuture.allOf(f, null); },
3234 <            () -> { CompletableFuture.allOf(null, f); },
3235 <
3236 <            () -> { CompletableFuture.anyOf((CompletableFuture<?>)null); },
3237 <            () -> { CompletableFuture.anyOf((CompletableFuture<?>[])null); },
3238 <            () -> { CompletableFuture.anyOf(f, null); },
3239 <            () -> { CompletableFuture.anyOf(null, f); },
3240 <
3241 <            // TODO: Crashes javac with lambda-8-2013-03-31...
2498 <            //() -> { CompletableFuture<?> x = f.thenAccept(null); },
2499 <            //() -> { CompletableFuture<Void> x = f.thenRun(null); },
2500 <            //() -> { CompletableFuture<Integer> x = f.thenApply(() -> { ; }); },
3149 >            () -> CompletableFuture.supplyAsync(null),
3150 >            () -> CompletableFuture.supplyAsync(null, exec),
3151 >            () -> CompletableFuture.supplyAsync(new IntegerSupplier(ExecutionMode.DEFAULT, 42), null),
3152 >
3153 >            () -> CompletableFuture.runAsync(null),
3154 >            () -> CompletableFuture.runAsync(null, exec),
3155 >            () -> CompletableFuture.runAsync(() -> {}, null),
3156 >
3157 >            () -> f.completeExceptionally(null),
3158 >
3159 >            () -> f.thenApply(null),
3160 >            () -> f.thenApplyAsync(null),
3161 >            () -> f.thenApplyAsync((x) -> x, null),
3162 >            () -> f.thenApplyAsync(null, exec),
3163 >
3164 >            () -> f.thenAccept(null),
3165 >            () -> f.thenAcceptAsync(null),
3166 >            () -> f.thenAcceptAsync((x) -> {} , null),
3167 >            () -> f.thenAcceptAsync(null, exec),
3168 >
3169 >            () -> f.thenRun(null),
3170 >            () -> f.thenRunAsync(null),
3171 >            () -> f.thenRunAsync(() -> {} , null),
3172 >            () -> f.thenRunAsync(null, exec),
3173 >
3174 >            () -> f.thenCombine(g, null),
3175 >            () -> f.thenCombineAsync(g, null),
3176 >            () -> f.thenCombineAsync(g, null, exec),
3177 >            () -> f.thenCombine(nullFuture, (x, y) -> x),
3178 >            () -> f.thenCombineAsync(nullFuture, (x, y) -> x),
3179 >            () -> f.thenCombineAsync(nullFuture, (x, y) -> x, exec),
3180 >            () -> f.thenCombineAsync(g, (x, y) -> x, null),
3181 >
3182 >            () -> f.thenAcceptBoth(g, null),
3183 >            () -> f.thenAcceptBothAsync(g, null),
3184 >            () -> f.thenAcceptBothAsync(g, null, exec),
3185 >            () -> f.thenAcceptBoth(nullFuture, (x, y) -> {}),
3186 >            () -> f.thenAcceptBothAsync(nullFuture, (x, y) -> {}),
3187 >            () -> f.thenAcceptBothAsync(nullFuture, (x, y) -> {}, exec),
3188 >            () -> f.thenAcceptBothAsync(g, (x, y) -> {}, null),
3189 >
3190 >            () -> f.runAfterBoth(g, null),
3191 >            () -> f.runAfterBothAsync(g, null),
3192 >            () -> f.runAfterBothAsync(g, null, exec),
3193 >            () -> f.runAfterBoth(nullFuture, () -> {}),
3194 >            () -> f.runAfterBothAsync(nullFuture, () -> {}),
3195 >            () -> f.runAfterBothAsync(nullFuture, () -> {}, exec),
3196 >            () -> f.runAfterBothAsync(g, () -> {}, null),
3197 >
3198 >            () -> f.applyToEither(g, null),
3199 >            () -> f.applyToEitherAsync(g, null),
3200 >            () -> f.applyToEitherAsync(g, null, exec),
3201 >            () -> f.applyToEither(nullFuture, (x) -> x),
3202 >            () -> f.applyToEitherAsync(nullFuture, (x) -> x),
3203 >            () -> f.applyToEitherAsync(nullFuture, (x) -> x, exec),
3204 >            () -> f.applyToEitherAsync(g, (x) -> x, null),
3205 >
3206 >            () -> f.acceptEither(g, null),
3207 >            () -> f.acceptEitherAsync(g, null),
3208 >            () -> f.acceptEitherAsync(g, null, exec),
3209 >            () -> f.acceptEither(nullFuture, (x) -> {}),
3210 >            () -> f.acceptEitherAsync(nullFuture, (x) -> {}),
3211 >            () -> f.acceptEitherAsync(nullFuture, (x) -> {}, exec),
3212 >            () -> f.acceptEitherAsync(g, (x) -> {}, null),
3213 >
3214 >            () -> f.runAfterEither(g, null),
3215 >            () -> f.runAfterEitherAsync(g, null),
3216 >            () -> f.runAfterEitherAsync(g, null, exec),
3217 >            () -> f.runAfterEither(nullFuture, () -> {}),
3218 >            () -> f.runAfterEitherAsync(nullFuture, () -> {}),
3219 >            () -> f.runAfterEitherAsync(nullFuture, () -> {}, exec),
3220 >            () -> f.runAfterEitherAsync(g, () -> {}, null),
3221 >
3222 >            () -> f.thenCompose(null),
3223 >            () -> f.thenComposeAsync(null),
3224 >            () -> f.thenComposeAsync(new CompletableFutureInc(ExecutionMode.EXECUTOR), null),
3225 >            () -> f.thenComposeAsync(null, exec),
3226 >
3227 >            () -> f.exceptionally(null),
3228 >
3229 >            () -> f.handle(null),
3230 >
3231 >            () -> CompletableFuture.allOf((CompletableFuture<?>)null),
3232 >            () -> CompletableFuture.allOf((CompletableFuture<?>[])null),
3233 >            () -> CompletableFuture.allOf(f, null),
3234 >            () -> CompletableFuture.allOf(null, f),
3235 >
3236 >            () -> CompletableFuture.anyOf((CompletableFuture<?>)null),
3237 >            () -> CompletableFuture.anyOf((CompletableFuture<?>[])null),
3238 >            () -> CompletableFuture.anyOf(f, null),
3239 >            () -> CompletableFuture.anyOf(null, f),
3240 >
3241 >            () -> f.obtrudeException(null),
3242          };
3243  
3244          assertThrows(NullPointerException.class, throwingActions);
3245 +        assertEquals(0, exec.count.get());
3246 +    }
3247 +
3248 +    /**
3249 +     * toCompletableFuture returns this CompletableFuture.
3250 +     */
3251 +    public void testToCompletableFuture() {
3252 +        CompletableFuture<Integer> f = new CompletableFuture<>();
3253 +        assertSame(f, f.toCompletableFuture());
3254      }
3255  
3256 +    //--- tests of implementation details; not part of official tck ---
3257 +
3258 +    Object resultOf(CompletableFuture<?> f) {
3259 +        try {
3260 +            java.lang.reflect.Field resultField
3261 +                = CompletableFuture.class.getDeclaredField("result");
3262 +            resultField.setAccessible(true);
3263 +            return resultField.get(f);
3264 +        } catch (Throwable t) { throw new AssertionError(t); }
3265 +    }
3266 +
3267 +    public void testExceptionPropagationReusesResultObject() {
3268 +        if (!testImplementationDetails) return;
3269 +        for (ExecutionMode m : ExecutionMode.values())
3270 +    {
3271 +        final CFException ex = new CFException();
3272 +        final CompletableFuture<Integer> v42 = CompletableFuture.completedFuture(42);
3273 +        final CompletableFuture<Integer> incomplete = new CompletableFuture<>();
3274 +
3275 +        List<Function<CompletableFuture<Integer>, CompletableFuture<?>>> funs
3276 +            = new ArrayList<>();
3277 +
3278 +        funs.add((y) -> m.thenRun(y, new Noop(m)));
3279 +        funs.add((y) -> m.thenAccept(y, new NoopConsumer(m)));
3280 +        funs.add((y) -> m.thenApply(y, new IncFunction(m)));
3281 +
3282 +        funs.add((y) -> m.runAfterEither(y, incomplete, new Noop(m)));
3283 +        funs.add((y) -> m.acceptEither(y, incomplete, new NoopConsumer(m)));
3284 +        funs.add((y) -> m.applyToEither(y, incomplete, new IncFunction(m)));
3285 +
3286 +        funs.add((y) -> m.runAfterBoth(y, v42, new Noop(m)));
3287 +        funs.add((y) -> m.thenAcceptBoth(y, v42, new SubtractAction(m)));
3288 +        funs.add((y) -> m.thenCombine(y, v42, new SubtractFunction(m)));
3289 +
3290 +        funs.add((y) -> m.whenComplete(y, (Integer x, Throwable t) -> {}));
3291 +
3292 +        funs.add((y) -> m.thenCompose(y, new CompletableFutureInc(m)));
3293 +
3294 +        funs.add((y) -> CompletableFuture.allOf(new CompletableFuture<?>[] {y, v42}));
3295 +        funs.add((y) -> CompletableFuture.anyOf(new CompletableFuture<?>[] {y, incomplete}));
3296 +
3297 +        for (Function<CompletableFuture<Integer>, CompletableFuture<?>>
3298 +                 fun : funs) {
3299 +            CompletableFuture<Integer> f = new CompletableFuture<>();
3300 +            f.completeExceptionally(ex);
3301 +            CompletableFuture<Integer> src = m.thenApply(f, new IncFunction(m));
3302 +            checkCompletedWithWrappedException(src, ex);
3303 +            CompletableFuture<?> dep = fun.apply(src);
3304 +            checkCompletedWithWrappedException(dep, ex);
3305 +            assertSame(resultOf(src), resultOf(dep));
3306 +        }
3307 +
3308 +        for (Function<CompletableFuture<Integer>, CompletableFuture<?>>
3309 +                 fun : funs) {
3310 +            CompletableFuture<Integer> f = new CompletableFuture<>();
3311 +            CompletableFuture<Integer> src = m.thenApply(f, new IncFunction(m));
3312 +            CompletableFuture<?> dep = fun.apply(src);
3313 +            f.completeExceptionally(ex);
3314 +            checkCompletedWithWrappedException(src, ex);
3315 +            checkCompletedWithWrappedException(dep, ex);
3316 +            assertSame(resultOf(src), resultOf(dep));
3317 +        }
3318 +
3319 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
3320 +        for (Function<CompletableFuture<Integer>, CompletableFuture<?>>
3321 +                 fun : funs) {
3322 +            CompletableFuture<Integer> f = new CompletableFuture<>();
3323 +            f.cancel(mayInterruptIfRunning);
3324 +            checkCancelled(f);
3325 +            CompletableFuture<Integer> src = m.thenApply(f, new IncFunction(m));
3326 +            checkCompletedWithWrappedCancellationException(src);
3327 +            CompletableFuture<?> dep = fun.apply(src);
3328 +            checkCompletedWithWrappedCancellationException(dep);
3329 +            assertSame(resultOf(src), resultOf(dep));
3330 +        }
3331 +
3332 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
3333 +        for (Function<CompletableFuture<Integer>, CompletableFuture<?>>
3334 +                 fun : funs) {
3335 +            CompletableFuture<Integer> f = new CompletableFuture<>();
3336 +            CompletableFuture<Integer> src = m.thenApply(f, new IncFunction(m));
3337 +            CompletableFuture<?> dep = fun.apply(src);
3338 +            f.cancel(mayInterruptIfRunning);
3339 +            checkCancelled(f);
3340 +            checkCompletedWithWrappedCancellationException(src);
3341 +            checkCompletedWithWrappedCancellationException(dep);
3342 +            assertSame(resultOf(src), resultOf(dep));
3343 +        }
3344 +    }}
3345 +
3346   }

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