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Comparing jsr166/src/test/tck/CompletableFutureTest.java (file contents):
Revision 1.21 by jsr166, Mon Apr 8 16:58:17 2013 UTC vs.
Revision 1.102 by jsr166, Sat Apr 25 04:55:30 2015 UTC

# Line 5 | Line 5
5   * http://creativecommons.org/publicdomain/zero/1.0/
6   */
7  
8 < import junit.framework.*;
8 > import static java.util.concurrent.TimeUnit.MILLISECONDS;
9 > import static java.util.concurrent.TimeUnit.SECONDS;
10 >
11 > import java.util.ArrayList;
12 > import java.util.List;
13 > import java.util.Objects;
14   import java.util.concurrent.Callable;
10 import java.util.concurrent.Executor;
11 import java.util.concurrent.ExecutorService;
12 import java.util.concurrent.Executors;
15   import java.util.concurrent.CancellationException;
14 import java.util.concurrent.CountDownLatch;
15 import java.util.concurrent.ExecutionException;
16 import java.util.concurrent.Future;
16   import java.util.concurrent.CompletableFuture;
17   import java.util.concurrent.CompletionException;
18 + import java.util.concurrent.CompletionStage;
19 + import java.util.concurrent.ExecutionException;
20 + import java.util.concurrent.Executor;
21 + import java.util.concurrent.ForkJoinPool;
22 + import java.util.concurrent.ForkJoinTask;
23   import java.util.concurrent.TimeoutException;
24   import java.util.concurrent.atomic.AtomicInteger;
21 import static java.util.concurrent.TimeUnit.MILLISECONDS;
22 import static java.util.concurrent.TimeUnit.SECONDS;
23 import java.util.*;
24 import java.util.function.Supplier;
25 import java.util.function.Consumer;
25   import java.util.function.BiConsumer;
27 import java.util.function.Function;
26   import java.util.function.BiFunction;
27 + import java.util.function.Consumer;
28 + import java.util.function.Function;
29 + import java.util.function.Supplier;
30 +
31 + import junit.framework.Test;
32 + import junit.framework.TestSuite;
33  
34   public class CompletableFutureTest extends JSR166TestCase {
35  
36      public static void main(String[] args) {
37 <        junit.textui.TestRunner.run(suite());
37 >        main(suite(), args);
38      }
39      public static Test suite() {
40          return new TestSuite(CompletableFutureTest.class);
# Line 54 | Line 58 | public class CompletableFutureTest exten
58      }
59  
60      <T> void checkCompletedNormally(CompletableFuture<T> f, T value) {
61 <        try {
62 <            assertEquals(value, f.get(LONG_DELAY_MS, MILLISECONDS));
59 <        } catch (Throwable fail) { threadUnexpectedException(fail); }
61 >        checkTimedGet(f, value);
62 >
63          try {
64              assertEquals(value, f.join());
65          } catch (Throwable fail) { threadUnexpectedException(fail); }
# Line 68 | Line 71 | public class CompletableFutureTest exten
71          } catch (Throwable fail) { threadUnexpectedException(fail); }
72          assertTrue(f.isDone());
73          assertFalse(f.isCancelled());
74 +        assertFalse(f.isCompletedExceptionally());
75          assertTrue(f.toString().contains("[Completed normally]"));
76      }
77  
78      void checkCompletedWithWrappedCFException(CompletableFuture<?> f) {
79 +        long startTime = System.nanoTime();
80 +        long timeoutMillis = LONG_DELAY_MS;
81          try {
82 <            f.get(LONG_DELAY_MS, MILLISECONDS);
82 >            f.get(timeoutMillis, MILLISECONDS);
83              shouldThrow();
84          } catch (ExecutionException success) {
85              assertTrue(success.getCause() instanceof CFException);
86          } catch (Throwable fail) { threadUnexpectedException(fail); }
87 +        assertTrue(millisElapsedSince(startTime) < timeoutMillis/2);
88 +
89          try {
90              f.join();
91              shouldThrow();
# Line 101 | Line 109 | public class CompletableFutureTest exten
109          assertTrue(f.toString().contains("[Completed exceptionally]"));
110      }
111  
112 +    <U> void checkCompletedExceptionallyWithRootCause(CompletableFuture<U> f,
113 +                                                      Throwable ex) {
114 +        long startTime = System.nanoTime();
115 +        long timeoutMillis = LONG_DELAY_MS;
116 +        try {
117 +            f.get(timeoutMillis, MILLISECONDS);
118 +            shouldThrow();
119 +        } catch (ExecutionException success) {
120 +            assertSame(ex, success.getCause());
121 +        } catch (Throwable fail) { threadUnexpectedException(fail); }
122 +        assertTrue(millisElapsedSince(startTime) < timeoutMillis/2);
123 +
124 +        try {
125 +            f.join();
126 +            shouldThrow();
127 +        } catch (CompletionException success) {
128 +            assertSame(ex, success.getCause());
129 +        }
130 +        try {
131 +            f.getNow(null);
132 +            shouldThrow();
133 +        } catch (CompletionException success) {
134 +            assertSame(ex, success.getCause());
135 +        }
136 +        try {
137 +            f.get();
138 +            shouldThrow();
139 +        } catch (ExecutionException success) {
140 +            assertSame(ex, success.getCause());
141 +        } catch (Throwable fail) { threadUnexpectedException(fail); }
142 +
143 +        assertTrue(f.isDone());
144 +        assertFalse(f.isCancelled());
145 +        assertTrue(f.toString().contains("[Completed exceptionally]"));
146 +    }
147 +
148 +    <U> void checkCompletedWithWrappedException(CompletableFuture<U> f,
149 +                                                Throwable ex) {
150 +        checkCompletedExceptionallyWithRootCause(f, ex);
151 +        try {
152 +            CompletableFuture<Throwable> spy = f.handle
153 +                ((U u, Throwable t) -> t);
154 +            assertTrue(spy.join() instanceof CompletionException);
155 +            assertSame(ex, spy.join().getCause());
156 +        } catch (Throwable fail) { threadUnexpectedException(fail); }
157 +    }
158 +
159 +    <U> void checkCompletedExceptionally(CompletableFuture<U> f, Throwable ex) {
160 +        checkCompletedExceptionallyWithRootCause(f, ex);
161 +        try {
162 +            CompletableFuture<Throwable> spy = f.handle
163 +                ((U u, Throwable t) -> t);
164 +            assertSame(ex, spy.join());
165 +        } catch (Throwable fail) { threadUnexpectedException(fail); }
166 +    }
167 +
168      void checkCancelled(CompletableFuture<?> f) {
169 +        long startTime = System.nanoTime();
170 +        long timeoutMillis = LONG_DELAY_MS;
171          try {
172 <            f.get(LONG_DELAY_MS, MILLISECONDS);
172 >            f.get(timeoutMillis, MILLISECONDS);
173              shouldThrow();
174          } catch (CancellationException success) {
175          } catch (Throwable fail) { threadUnexpectedException(fail); }
176 +        assertTrue(millisElapsedSince(startTime) < timeoutMillis/2);
177 +
178          try {
179              f.join();
180              shouldThrow();
# Line 121 | Line 189 | public class CompletableFutureTest exten
189          } catch (CancellationException success) {
190          } catch (Throwable fail) { threadUnexpectedException(fail); }
191          assertTrue(f.isDone());
192 +        assertTrue(f.isCompletedExceptionally());
193          assertTrue(f.isCancelled());
194          assertTrue(f.toString().contains("[Completed exceptionally]"));
195      }
196  
197      void checkCompletedWithWrappedCancellationException(CompletableFuture<?> f) {
198 +        long startTime = System.nanoTime();
199 +        long timeoutMillis = LONG_DELAY_MS;
200          try {
201 <            f.get(LONG_DELAY_MS, MILLISECONDS);
201 >            f.get(timeoutMillis, MILLISECONDS);
202              shouldThrow();
203          } catch (ExecutionException success) {
204              assertTrue(success.getCause() instanceof CancellationException);
205          } catch (Throwable fail) { threadUnexpectedException(fail); }
206 +        assertTrue(millisElapsedSince(startTime) < timeoutMillis/2);
207 +
208          try {
209              f.join();
210              shouldThrow();
# Line 152 | Line 225 | public class CompletableFutureTest exten
225          } catch (Throwable fail) { threadUnexpectedException(fail); }
226          assertTrue(f.isDone());
227          assertFalse(f.isCancelled());
228 +        assertTrue(f.isCompletedExceptionally());
229          assertTrue(f.toString().contains("[Completed exceptionally]"));
230      }
231  
# Line 160 | Line 234 | public class CompletableFutureTest exten
234       * by methods isDone, isCancelled, and getNow
235       */
236      public void testConstructor() {
237 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
237 >        CompletableFuture<Integer> f = new CompletableFuture<>();
238          checkIncomplete(f);
239      }
240  
# Line 169 | Line 243 | public class CompletableFutureTest exten
243       * isCancelled, join, get, and getNow
244       */
245      public void testComplete() {
246 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
246 >        for (Integer v1 : new Integer[] { 1, null })
247 >    {
248 >        CompletableFuture<Integer> f = new CompletableFuture<>();
249          checkIncomplete(f);
250 <        f.complete(one);
251 <        checkCompletedNormally(f, one);
252 <    }
250 >        assertTrue(f.complete(v1));
251 >        assertFalse(f.complete(v1));
252 >        checkCompletedNormally(f, v1);
253 >    }}
254  
255      /**
256       * completeExceptionally completes exceptionally, as indicated by
257       * methods isDone, isCancelled, join, get, and getNow
258       */
259      public void testCompleteExceptionally() {
260 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
260 >        CompletableFuture<Integer> f = new CompletableFuture<>();
261 >        CFException ex = new CFException();
262          checkIncomplete(f);
263 <        f.completeExceptionally(new CFException());
264 <        checkCompletedWithWrappedCFException(f);
263 >        f.completeExceptionally(ex);
264 >        checkCompletedExceptionally(f, ex);
265      }
266  
267      /**
# Line 191 | Line 269 | public class CompletableFutureTest exten
269       * methods isDone, isCancelled, join, get, and getNow
270       */
271      public void testCancel() {
272 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
272 >        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
273 >    {
274 >        CompletableFuture<Integer> f = new CompletableFuture<>();
275          checkIncomplete(f);
276 <        assertTrue(f.cancel(true));
276 >        assertTrue(f.cancel(mayInterruptIfRunning));
277 >        assertTrue(f.cancel(mayInterruptIfRunning));
278 >        assertTrue(f.cancel(!mayInterruptIfRunning));
279          checkCancelled(f);
280 <    }
280 >    }}
281  
282      /**
283       * obtrudeValue forces completion with given value
284       */
285      public void testObtrudeValue() {
286 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
286 >        CompletableFuture<Integer> f = new CompletableFuture<>();
287          checkIncomplete(f);
288 <        f.complete(one);
288 >        assertTrue(f.complete(one));
289          checkCompletedNormally(f, one);
290          f.obtrudeValue(three);
291          checkCompletedNormally(f, three);
292          f.obtrudeValue(two);
293          checkCompletedNormally(f, two);
294 <        f = new CompletableFuture<Integer>();
294 >        f = new CompletableFuture<>();
295          f.obtrudeValue(three);
296          checkCompletedNormally(f, three);
297 <        f = new CompletableFuture<Integer>();
297 >        f.obtrudeValue(null);
298 >        checkCompletedNormally(f, null);
299 >        f = new CompletableFuture<>();
300          f.completeExceptionally(new CFException());
301          f.obtrudeValue(four);
302          checkCompletedNormally(f, four);
# Line 222 | Line 306 | public class CompletableFutureTest exten
306       * obtrudeException forces completion with given exception
307       */
308      public void testObtrudeException() {
309 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
310 <        checkIncomplete(f);
311 <        f.complete(one);
312 <        checkCompletedNormally(f, one);
313 <        f.obtrudeException(new CFException());
314 <        checkCompletedWithWrappedCFException(f);
315 <        f = new CompletableFuture<Integer>();
316 <        f.obtrudeException(new CFException());
317 <        checkCompletedWithWrappedCFException(f);
318 <        f = new CompletableFuture<Integer>();
319 <        f.completeExceptionally(new CFException());
320 <        f.obtrudeValue(four);
321 <        checkCompletedNormally(f, four);
322 <        f.obtrudeException(new CFException());
323 <        checkCompletedWithWrappedCFException(f);
324 <    }
309 >        for (Integer v1 : new Integer[] { 1, null })
310 >    {
311 >        CFException ex;
312 >        CompletableFuture<Integer> f;
313 >
314 >        f = new CompletableFuture<>();
315 >        assertTrue(f.complete(v1));
316 >        for (int i = 0; i < 2; i++) {
317 >            f.obtrudeException(ex = new CFException());
318 >            checkCompletedExceptionally(f, ex);
319 >        }
320 >
321 >        f = new CompletableFuture<>();
322 >        for (int i = 0; i < 2; i++) {
323 >            f.obtrudeException(ex = new CFException());
324 >            checkCompletedExceptionally(f, ex);
325 >        }
326 >
327 >        f = new CompletableFuture<>();
328 >        f.completeExceptionally(ex = new CFException());
329 >        f.obtrudeValue(v1);
330 >        checkCompletedNormally(f, v1);
331 >        f.obtrudeException(ex = new CFException());
332 >        checkCompletedExceptionally(f, ex);
333 >        f.completeExceptionally(new CFException());
334 >        checkCompletedExceptionally(f, ex);
335 >        assertFalse(f.complete(v1));
336 >        checkCompletedExceptionally(f, ex);
337 >    }}
338  
339      /**
340       * getNumberOfDependents returns number of dependent tasks
341       */
342      public void testGetNumberOfDependents() {
343 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
344 <        assertEquals(f.getNumberOfDependents(), 0);
345 <        CompletableFuture g = f.thenRun(new Noop());
346 <        assertEquals(f.getNumberOfDependents(), 1);
347 <        assertEquals(g.getNumberOfDependents(), 0);
348 <        CompletableFuture h = f.thenRun(new Noop());
349 <        assertEquals(f.getNumberOfDependents(), 2);
350 <        f.complete(1);
351 <        checkCompletedNormally(g, null);
352 <        assertEquals(f.getNumberOfDependents(), 0);
353 <        assertEquals(g.getNumberOfDependents(), 0);
354 <    }
355 <
343 >        for (ExecutionMode m : ExecutionMode.values())
344 >        for (Integer v1 : new Integer[] { 1, null })
345 >    {
346 >        CompletableFuture<Integer> f = new CompletableFuture<>();
347 >        assertEquals(0, f.getNumberOfDependents());
348 >        final CompletableFuture<Void> g = m.thenRun(f, new Noop(m));
349 >        assertEquals(1, f.getNumberOfDependents());
350 >        assertEquals(0, g.getNumberOfDependents());
351 >        final CompletableFuture<Void> h = m.thenRun(f, new Noop(m));
352 >        assertEquals(2, f.getNumberOfDependents());
353 >        assertEquals(0, h.getNumberOfDependents());
354 >        assertTrue(f.complete(v1));
355 >        checkCompletedNormally(g, null);
356 >        checkCompletedNormally(h, null);
357 >        assertEquals(0, f.getNumberOfDependents());
358 >        assertEquals(0, g.getNumberOfDependents());
359 >        assertEquals(0, h.getNumberOfDependents());
360 >    }}
361  
362      /**
363       * toString indicates current completion state
# Line 266 | Line 368 | public class CompletableFutureTest exten
368          f = new CompletableFuture<String>();
369          assertTrue(f.toString().contains("[Not completed]"));
370  
371 <        f.complete("foo");
371 >        assertTrue(f.complete("foo"));
372          assertTrue(f.toString().contains("[Completed normally]"));
373  
374          f = new CompletableFuture<String>();
375 <        f.completeExceptionally(new IndexOutOfBoundsException());
375 >        assertTrue(f.completeExceptionally(new IndexOutOfBoundsException()));
376          assertTrue(f.toString().contains("[Completed exceptionally]"));
377 +
378 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false }) {
379 +            f = new CompletableFuture<String>();
380 +            assertTrue(f.cancel(mayInterruptIfRunning));
381 +            assertTrue(f.toString().contains("[Completed exceptionally]"));
382 +        }
383      }
384  
385      /**
# Line 282 | Line 390 | public class CompletableFutureTest exten
390          checkCompletedNormally(f, "test");
391      }
392  
393 <    // Choose non-commutative actions for better coverage
393 >    abstract class CheckedAction {
394 >        int invocationCount = 0;
395 >        final ExecutionMode m;
396 >        CheckedAction(ExecutionMode m) { this.m = m; }
397 >        void invoked() {
398 >            m.checkExecutionMode();
399 >            assertEquals(0, invocationCount++);
400 >        }
401 >        void assertNotInvoked() { assertEquals(0, invocationCount); }
402 >        void assertInvoked() { assertEquals(1, invocationCount); }
403 >    }
404 >
405 >    abstract class CheckedIntegerAction extends CheckedAction {
406 >        Integer value;
407 >        CheckedIntegerAction(ExecutionMode m) { super(m); }
408 >        void assertValue(Integer expected) {
409 >            assertInvoked();
410 >            assertEquals(expected, value);
411 >        }
412 >    }
413 >
414 >    class IntegerSupplier extends CheckedAction
415 >        implements Supplier<Integer>
416 >    {
417 >        final Integer value;
418 >        IntegerSupplier(ExecutionMode m, Integer value) {
419 >            super(m);
420 >            this.value = value;
421 >        }
422 >        public Integer get() {
423 >            invoked();
424 >            return value;
425 >        }
426 >    }
427 >
428 >    // A function that handles and produces null values as well.
429 >    static Integer inc(Integer x) {
430 >        return (x == null) ? null : x + 1;
431 >    }
432  
433 <    static final Supplier<Integer> supplyOne =
434 <        () -> Integer.valueOf(1);
435 <    static final Function<Integer, Integer> inc =
436 <        (Integer x) -> Integer.valueOf(x.intValue() + 1);
437 <    static final BiFunction<Integer, Integer, Integer> subtract =
438 <        (Integer x, Integer y) -> Integer.valueOf(x.intValue() - y.intValue());
439 <    static final class IncAction implements Consumer<Integer> {
440 <        int value;
295 <        public void accept(Integer x) { value = x.intValue() + 1; }
433 >    class NoopConsumer extends CheckedIntegerAction
434 >        implements Consumer<Integer>
435 >    {
436 >        NoopConsumer(ExecutionMode m) { super(m); }
437 >        public void accept(Integer x) {
438 >            invoked();
439 >            value = x;
440 >        }
441      }
442 <    static final class AddAction implements BiConsumer<Integer, Integer> {
443 <        int value;
442 >
443 >    class IncFunction extends CheckedIntegerAction
444 >        implements Function<Integer,Integer>
445 >    {
446 >        IncFunction(ExecutionMode m) { super(m); }
447 >        public Integer apply(Integer x) {
448 >            invoked();
449 >            return value = inc(x);
450 >        }
451 >    }
452 >
453 >    // Choose non-commutative actions for better coverage
454 >    // A non-commutative function that handles and produces null values as well.
455 >    static Integer subtract(Integer x, Integer y) {
456 >        return (x == null && y == null) ? null :
457 >            ((x == null) ? 42 : x.intValue())
458 >            - ((y == null) ? 99 : y.intValue());
459 >    }
460 >
461 >    class SubtractAction extends CheckedIntegerAction
462 >        implements BiConsumer<Integer, Integer>
463 >    {
464 >        SubtractAction(ExecutionMode m) { super(m); }
465          public void accept(Integer x, Integer y) {
466 <            value = x.intValue() + y.intValue();
466 >            invoked();
467 >            value = subtract(x, y);
468          }
469      }
470 <    static final class Noop implements Runnable {
471 <        boolean ran;
472 <        public void run() { ran = true; }
470 >
471 >    class SubtractFunction extends CheckedIntegerAction
472 >        implements BiFunction<Integer, Integer, Integer>
473 >    {
474 >        SubtractFunction(ExecutionMode m) { super(m); }
475 >        public Integer apply(Integer x, Integer y) {
476 >            invoked();
477 >            return value = subtract(x, y);
478 >        }
479      }
480  
481 <    static final class FailingSupplier implements Supplier<Integer> {
482 <        boolean ran;
483 <        public Integer get() { ran = true; throw new CFException(); }
481 >    class Noop extends CheckedAction implements Runnable {
482 >        Noop(ExecutionMode m) { super(m); }
483 >        public void run() {
484 >            invoked();
485 >        }
486      }
487 <    static final class FailingConsumer implements Consumer<Integer> {
488 <        boolean ran;
489 <        public void accept(Integer x) { ran = true; throw new CFException(); }
487 >
488 >    class FailingSupplier extends CheckedAction
489 >        implements Supplier<Integer>
490 >    {
491 >        FailingSupplier(ExecutionMode m) { super(m); }
492 >        public Integer get() {
493 >            invoked();
494 >            throw new CFException();
495 >        }
496      }
497 <    static final class FailingBiConsumer implements BiConsumer<Integer, Integer> {
498 <        boolean ran;
499 <        public void accept(Integer x, Integer y) { ran = true; throw new CFException(); }
497 >
498 >    class FailingConsumer extends CheckedIntegerAction
499 >        implements Consumer<Integer>
500 >    {
501 >        FailingConsumer(ExecutionMode m) { super(m); }
502 >        public void accept(Integer x) {
503 >            invoked();
504 >            value = x;
505 >            throw new CFException();
506 >        }
507      }
508 <    static final class FailingFunction implements Function<Integer, Integer> {
509 <        boolean ran;
510 <        public Integer apply(Integer x) { ran = true; throw new CFException(); }
508 >
509 >    class FailingBiConsumer extends CheckedIntegerAction
510 >        implements BiConsumer<Integer, Integer>
511 >    {
512 >        FailingBiConsumer(ExecutionMode m) { super(m); }
513 >        public void accept(Integer x, Integer y) {
514 >            invoked();
515 >            value = subtract(x, y);
516 >            throw new CFException();
517 >        }
518 >    }
519 >
520 >    class FailingFunction extends CheckedIntegerAction
521 >        implements Function<Integer, Integer>
522 >    {
523 >        FailingFunction(ExecutionMode m) { super(m); }
524 >        public Integer apply(Integer x) {
525 >            invoked();
526 >            value = x;
527 >            throw new CFException();
528 >        }
529      }
530 <    static final class FailingBiFunction implements BiFunction<Integer, Integer, Integer> {
531 <        boolean ran;
532 <        public Integer apply(Integer x, Integer y) { ran = true; throw new CFException(); }
530 >
531 >    class FailingBiFunction extends CheckedIntegerAction
532 >        implements BiFunction<Integer, Integer, Integer>
533 >    {
534 >        FailingBiFunction(ExecutionMode m) { super(m); }
535 >        public Integer apply(Integer x, Integer y) {
536 >            invoked();
537 >            value = subtract(x, y);
538 >            throw new CFException();
539 >        }
540      }
541 <    static final class FailingNoop implements Runnable {
542 <        boolean ran;
543 <        public void run() { ran = true; throw new CFException(); }
541 >
542 >    class FailingRunnable extends CheckedAction implements Runnable {
543 >        FailingRunnable(ExecutionMode m) { super(m); }
544 >        public void run() {
545 >            invoked();
546 >            throw new CFException();
547 >        }
548      }
549  
550 <    static final class CompletableFutureInc
551 <        implements Function<Integer, CompletableFuture<Integer>> {
552 <        boolean ran;
550 >    class CompletableFutureInc extends CheckedIntegerAction
551 >        implements Function<Integer, CompletableFuture<Integer>>
552 >    {
553 >        CompletableFutureInc(ExecutionMode m) { super(m); }
554          public CompletableFuture<Integer> apply(Integer x) {
555 <            ran = true;
556 <            CompletableFuture<Integer> f = new CompletableFuture<Integer>();
557 <            f.complete(Integer.valueOf(x.intValue() + 1));
555 >            invoked();
556 >            value = x;
557 >            CompletableFuture<Integer> f = new CompletableFuture<>();
558 >            assertTrue(f.complete(inc(x)));
559              return f;
560          }
561      }
562  
563 <    static final class FailingCompletableFutureFunction
564 <        implements Function<Integer, CompletableFuture<Integer>> {
565 <        boolean ran;
563 >    class FailingCompletableFutureFunction extends CheckedIntegerAction
564 >        implements Function<Integer, CompletableFuture<Integer>>
565 >    {
566 >        FailingCompletableFutureFunction(ExecutionMode m) { super(m); }
567          public CompletableFuture<Integer> apply(Integer x) {
568 <            ran = true; throw new CFException();
568 >            invoked();
569 >            value = x;
570 >            throw new CFException();
571          }
572      }
573  
574      // Used for explicit executor tests
575      static final class ThreadExecutor implements Executor {
576 <        AtomicInteger count = new AtomicInteger(0);
576 >        final AtomicInteger count = new AtomicInteger(0);
577 >        static final ThreadGroup tg = new ThreadGroup("ThreadExecutor");
578 >        static boolean startedCurrentThread() {
579 >            return Thread.currentThread().getThreadGroup() == tg;
580 >        }
581  
582          public void execute(Runnable r) {
583              count.getAndIncrement();
584 <            new Thread(r).start();
584 >            new Thread(tg, r).start();
585          }
586      }
587  
588 <    static final class ExceptionToInteger implements Function<Throwable, Integer> {
589 <        public Integer apply(Throwable x) { return Integer.valueOf(3); }
364 <    }
588 >    static final boolean defaultExecutorIsCommonPool
589 >        = ForkJoinPool.getCommonPoolParallelism() > 1;
590  
591 <    static final class IntegerHandler implements BiFunction<Integer, Throwable, Integer> {
592 <        boolean ran;
593 <        public Integer apply(Integer x, Throwable t) {
594 <            ran = true;
595 <            return (t == null) ? two : three;
596 <        }
597 <    }
591 >    /**
592 >     * Permits the testing of parallel code for the 3 different
593 >     * execution modes without copy/pasting all the test methods.
594 >     */
595 >    enum ExecutionMode {
596 >        SYNC {
597 >            public void checkExecutionMode() {
598 >                assertFalse(ThreadExecutor.startedCurrentThread());
599 >                assertNull(ForkJoinTask.getPool());
600 >            }
601 >            public CompletableFuture<Void> runAsync(Runnable a) {
602 >                throw new UnsupportedOperationException();
603 >            }
604 >            public <U> CompletableFuture<U> supplyAsync(Supplier<U> a) {
605 >                throw new UnsupportedOperationException();
606 >            }
607 >            public <T> CompletableFuture<Void> thenRun
608 >                (CompletableFuture<T> f, Runnable a) {
609 >                return f.thenRun(a);
610 >            }
611 >            public <T> CompletableFuture<Void> thenAccept
612 >                (CompletableFuture<T> f, Consumer<? super T> a) {
613 >                return f.thenAccept(a);
614 >            }
615 >            public <T,U> CompletableFuture<U> thenApply
616 >                (CompletableFuture<T> f, Function<? super T,U> a) {
617 >                return f.thenApply(a);
618 >            }
619 >            public <T,U> CompletableFuture<U> thenCompose
620 >                (CompletableFuture<T> f,
621 >                 Function<? super T,? extends CompletionStage<U>> a) {
622 >                return f.thenCompose(a);
623 >            }
624 >            public <T,U> CompletableFuture<U> handle
625 >                (CompletableFuture<T> f,
626 >                 BiFunction<? super T,Throwable,? extends U> a) {
627 >                return f.handle(a);
628 >            }
629 >            public <T> CompletableFuture<T> whenComplete
630 >                (CompletableFuture<T> f,
631 >                 BiConsumer<? super T,? super Throwable> a) {
632 >                return f.whenComplete(a);
633 >            }
634 >            public <T,U> CompletableFuture<Void> runAfterBoth
635 >                (CompletableFuture<T> f, CompletableFuture<U> g, Runnable a) {
636 >                return f.runAfterBoth(g, a);
637 >            }
638 >            public <T,U> CompletableFuture<Void> thenAcceptBoth
639 >                (CompletableFuture<T> f,
640 >                 CompletionStage<? extends U> g,
641 >                 BiConsumer<? super T,? super U> a) {
642 >                return f.thenAcceptBoth(g, a);
643 >            }
644 >            public <T,U,V> CompletableFuture<V> thenCombine
645 >                (CompletableFuture<T> f,
646 >                 CompletionStage<? extends U> g,
647 >                 BiFunction<? super T,? super U,? extends V> a) {
648 >                return f.thenCombine(g, a);
649 >            }
650 >            public <T> CompletableFuture<Void> runAfterEither
651 >                (CompletableFuture<T> f,
652 >                 CompletionStage<?> g,
653 >                 java.lang.Runnable a) {
654 >                return f.runAfterEither(g, a);
655 >            }
656 >            public <T> CompletableFuture<Void> acceptEither
657 >                (CompletableFuture<T> f,
658 >                 CompletionStage<? extends T> g,
659 >                 Consumer<? super T> a) {
660 >                return f.acceptEither(g, a);
661 >            }
662 >            public <T,U> CompletableFuture<U> applyToEither
663 >                (CompletableFuture<T> f,
664 >                 CompletionStage<? extends T> g,
665 >                 Function<? super T,U> a) {
666 >                return f.applyToEither(g, a);
667 >            }
668 >        },
669  
670 +        ASYNC {
671 +            public void checkExecutionMode() {
672 +                assertEquals(defaultExecutorIsCommonPool,
673 +                             (ForkJoinPool.commonPool() == ForkJoinTask.getPool()));
674 +            }
675 +            public CompletableFuture<Void> runAsync(Runnable a) {
676 +                return CompletableFuture.runAsync(a);
677 +            }
678 +            public <U> CompletableFuture<U> supplyAsync(Supplier<U> a) {
679 +                return CompletableFuture.supplyAsync(a);
680 +            }
681 +            public <T> CompletableFuture<Void> thenRun
682 +                (CompletableFuture<T> f, Runnable a) {
683 +                return f.thenRunAsync(a);
684 +            }
685 +            public <T> CompletableFuture<Void> thenAccept
686 +                (CompletableFuture<T> f, Consumer<? super T> a) {
687 +                return f.thenAcceptAsync(a);
688 +            }
689 +            public <T,U> CompletableFuture<U> thenApply
690 +                (CompletableFuture<T> f, Function<? super T,U> a) {
691 +                return f.thenApplyAsync(a);
692 +            }
693 +            public <T,U> CompletableFuture<U> thenCompose
694 +                (CompletableFuture<T> f,
695 +                 Function<? super T,? extends CompletionStage<U>> a) {
696 +                return f.thenComposeAsync(a);
697 +            }
698 +            public <T,U> CompletableFuture<U> handle
699 +                (CompletableFuture<T> f,
700 +                 BiFunction<? super T,Throwable,? extends U> a) {
701 +                return f.handleAsync(a);
702 +            }
703 +            public <T> CompletableFuture<T> whenComplete
704 +                (CompletableFuture<T> f,
705 +                 BiConsumer<? super T,? super Throwable> a) {
706 +                return f.whenCompleteAsync(a);
707 +            }
708 +            public <T,U> CompletableFuture<Void> runAfterBoth
709 +                (CompletableFuture<T> f, CompletableFuture<U> g, Runnable a) {
710 +                return f.runAfterBothAsync(g, a);
711 +            }
712 +            public <T,U> CompletableFuture<Void> thenAcceptBoth
713 +                (CompletableFuture<T> f,
714 +                 CompletionStage<? extends U> g,
715 +                 BiConsumer<? super T,? super U> a) {
716 +                return f.thenAcceptBothAsync(g, a);
717 +            }
718 +            public <T,U,V> CompletableFuture<V> thenCombine
719 +                (CompletableFuture<T> f,
720 +                 CompletionStage<? extends U> g,
721 +                 BiFunction<? super T,? super U,? extends V> a) {
722 +                return f.thenCombineAsync(g, a);
723 +            }
724 +            public <T> CompletableFuture<Void> runAfterEither
725 +                (CompletableFuture<T> f,
726 +                 CompletionStage<?> g,
727 +                 java.lang.Runnable a) {
728 +                return f.runAfterEitherAsync(g, a);
729 +            }
730 +            public <T> CompletableFuture<Void> acceptEither
731 +                (CompletableFuture<T> f,
732 +                 CompletionStage<? extends T> g,
733 +                 Consumer<? super T> a) {
734 +                return f.acceptEitherAsync(g, a);
735 +            }
736 +            public <T,U> CompletableFuture<U> applyToEither
737 +                (CompletableFuture<T> f,
738 +                 CompletionStage<? extends T> g,
739 +                 Function<? super T,U> a) {
740 +                return f.applyToEitherAsync(g, a);
741 +            }
742 +        },
743 +
744 +        EXECUTOR {
745 +            public void checkExecutionMode() {
746 +                assertTrue(ThreadExecutor.startedCurrentThread());
747 +            }
748 +            public CompletableFuture<Void> runAsync(Runnable a) {
749 +                return CompletableFuture.runAsync(a, new ThreadExecutor());
750 +            }
751 +            public <U> CompletableFuture<U> supplyAsync(Supplier<U> a) {
752 +                return CompletableFuture.supplyAsync(a, new ThreadExecutor());
753 +            }
754 +            public <T> CompletableFuture<Void> thenRun
755 +                (CompletableFuture<T> f, Runnable a) {
756 +                return f.thenRunAsync(a, new ThreadExecutor());
757 +            }
758 +            public <T> CompletableFuture<Void> thenAccept
759 +                (CompletableFuture<T> f, Consumer<? super T> a) {
760 +                return f.thenAcceptAsync(a, new ThreadExecutor());
761 +            }
762 +            public <T,U> CompletableFuture<U> thenApply
763 +                (CompletableFuture<T> f, Function<? super T,U> a) {
764 +                return f.thenApplyAsync(a, new ThreadExecutor());
765 +            }
766 +            public <T,U> CompletableFuture<U> thenCompose
767 +                (CompletableFuture<T> f,
768 +                 Function<? super T,? extends CompletionStage<U>> a) {
769 +                return f.thenComposeAsync(a, new ThreadExecutor());
770 +            }
771 +            public <T,U> CompletableFuture<U> handle
772 +                (CompletableFuture<T> f,
773 +                 BiFunction<? super T,Throwable,? extends U> a) {
774 +                return f.handleAsync(a, new ThreadExecutor());
775 +            }
776 +            public <T> CompletableFuture<T> whenComplete
777 +                (CompletableFuture<T> f,
778 +                 BiConsumer<? super T,? super Throwable> a) {
779 +                return f.whenCompleteAsync(a, new ThreadExecutor());
780 +            }
781 +            public <T,U> CompletableFuture<Void> runAfterBoth
782 +                (CompletableFuture<T> f, CompletableFuture<U> g, Runnable a) {
783 +                return f.runAfterBothAsync(g, a, new ThreadExecutor());
784 +            }
785 +            public <T,U> CompletableFuture<Void> thenAcceptBoth
786 +                (CompletableFuture<T> f,
787 +                 CompletionStage<? extends U> g,
788 +                 BiConsumer<? super T,? super U> a) {
789 +                return f.thenAcceptBothAsync(g, a, new ThreadExecutor());
790 +            }
791 +            public <T,U,V> CompletableFuture<V> thenCombine
792 +                (CompletableFuture<T> f,
793 +                 CompletionStage<? extends U> g,
794 +                 BiFunction<? super T,? super U,? extends V> a) {
795 +                return f.thenCombineAsync(g, a, new ThreadExecutor());
796 +            }
797 +            public <T> CompletableFuture<Void> runAfterEither
798 +                (CompletableFuture<T> f,
799 +                 CompletionStage<?> g,
800 +                 java.lang.Runnable a) {
801 +                return f.runAfterEitherAsync(g, a, new ThreadExecutor());
802 +            }
803 +            public <T> CompletableFuture<Void> acceptEither
804 +                (CompletableFuture<T> f,
805 +                 CompletionStage<? extends T> g,
806 +                 Consumer<? super T> a) {
807 +                return f.acceptEitherAsync(g, a, new ThreadExecutor());
808 +            }
809 +            public <T,U> CompletableFuture<U> applyToEither
810 +                (CompletableFuture<T> f,
811 +                 CompletionStage<? extends T> g,
812 +                 Function<? super T,U> a) {
813 +                return f.applyToEitherAsync(g, a, new ThreadExecutor());
814 +            }
815 +        };
816 +
817 +        public abstract void checkExecutionMode();
818 +        public abstract CompletableFuture<Void> runAsync(Runnable a);
819 +        public abstract <U> CompletableFuture<U> supplyAsync(Supplier<U> a);
820 +        public abstract <T> CompletableFuture<Void> thenRun
821 +            (CompletableFuture<T> f, Runnable a);
822 +        public abstract <T> CompletableFuture<Void> thenAccept
823 +            (CompletableFuture<T> f, Consumer<? super T> a);
824 +        public abstract <T,U> CompletableFuture<U> thenApply
825 +            (CompletableFuture<T> f, Function<? super T,U> a);
826 +        public abstract <T,U> CompletableFuture<U> thenCompose
827 +            (CompletableFuture<T> f,
828 +             Function<? super T,? extends CompletionStage<U>> a);
829 +        public abstract <T,U> CompletableFuture<U> handle
830 +            (CompletableFuture<T> f,
831 +             BiFunction<? super T,Throwable,? extends U> a);
832 +        public abstract <T> CompletableFuture<T> whenComplete
833 +            (CompletableFuture<T> f,
834 +             BiConsumer<? super T,? super Throwable> a);
835 +        public abstract <T,U> CompletableFuture<Void> runAfterBoth
836 +            (CompletableFuture<T> f, CompletableFuture<U> g, Runnable a);
837 +        public abstract <T,U> CompletableFuture<Void> thenAcceptBoth
838 +            (CompletableFuture<T> f,
839 +             CompletionStage<? extends U> g,
840 +             BiConsumer<? super T,? super U> a);
841 +        public abstract <T,U,V> CompletableFuture<V> thenCombine
842 +            (CompletableFuture<T> f,
843 +             CompletionStage<? extends U> g,
844 +             BiFunction<? super T,? super U,? extends V> a);
845 +        public abstract <T> CompletableFuture<Void> runAfterEither
846 +            (CompletableFuture<T> f,
847 +             CompletionStage<?> g,
848 +             java.lang.Runnable a);
849 +        public abstract <T> CompletableFuture<Void> acceptEither
850 +            (CompletableFuture<T> f,
851 +             CompletionStage<? extends T> g,
852 +             Consumer<? super T> a);
853 +        public abstract <T,U> CompletableFuture<U> applyToEither
854 +            (CompletableFuture<T> f,
855 +             CompletionStage<? extends T> g,
856 +             Function<? super T,U> a);
857 +    }
858 +
859 +    /**
860 +     * exceptionally action is not invoked when source completes
861 +     * normally, and source result is propagated
862 +     */
863 +    public void testExceptionally_normalCompletion() {
864 +        for (boolean createIncomplete : new boolean[] { true, false })
865 +        for (Integer v1 : new Integer[] { 1, null })
866 +    {
867 +        final AtomicInteger a = new AtomicInteger(0);
868 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
869 +        if (!createIncomplete) assertTrue(f.complete(v1));
870 +        final CompletableFuture<Integer> g = f.exceptionally
871 +            ((Throwable t) -> {
872 +                // Should not be called
873 +                a.getAndIncrement();
874 +                throw new AssertionError();
875 +            });
876 +        if (createIncomplete) assertTrue(f.complete(v1));
877 +
878 +        checkCompletedNormally(g, v1);
879 +        checkCompletedNormally(f, v1);
880 +        assertEquals(0, a.get());
881 +    }}
882  
883      /**
884       * exceptionally action completes with function value on source
885 <     * exception;  otherwise with source value
885 >     * exception
886       */
887 <    public void testExceptionally() {
888 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
889 <        ExceptionToInteger r = new ExceptionToInteger();
890 <        CompletableFuture<Integer> g = f.exceptionally(r);
891 <        f.completeExceptionally(new CFException());
892 <        checkCompletedNormally(g, three);
887 >    public void testExceptionally_exceptionalCompletion() {
888 >        for (boolean createIncomplete : new boolean[] { true, false })
889 >        for (Integer v1 : new Integer[] { 1, null })
890 >    {
891 >        final AtomicInteger a = new AtomicInteger(0);
892 >        final CFException ex = new CFException();
893 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
894 >        if (!createIncomplete) f.completeExceptionally(ex);
895 >        final CompletableFuture<Integer> g = f.exceptionally
896 >            ((Throwable t) -> {
897 >                ExecutionMode.SYNC.checkExecutionMode();
898 >                threadAssertSame(t, ex);
899 >                a.getAndIncrement();
900 >                return v1;
901 >            });
902 >        if (createIncomplete) f.completeExceptionally(ex);
903 >
904 >        checkCompletedNormally(g, v1);
905 >        assertEquals(1, a.get());
906 >    }}
907 >
908 >    public void testExceptionally_exceptionalCompletionActionFailed() {
909 >        for (boolean createIncomplete : new boolean[] { true, false })
910 >    {
911 >        final AtomicInteger a = new AtomicInteger(0);
912 >        final CFException ex1 = new CFException();
913 >        final CFException ex2 = new CFException();
914 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
915 >        if (!createIncomplete) f.completeExceptionally(ex1);
916 >        final CompletableFuture<Integer> g = f.exceptionally
917 >            ((Throwable t) -> {
918 >                ExecutionMode.SYNC.checkExecutionMode();
919 >                threadAssertSame(t, ex1);
920 >                a.getAndIncrement();
921 >                throw ex2;
922 >            });
923 >        if (createIncomplete) f.completeExceptionally(ex1);
924 >
925 >        checkCompletedWithWrappedException(g, ex2);
926 >        assertEquals(1, a.get());
927 >    }}
928 >
929 >    /**
930 >     * whenComplete action executes on normal completion, propagating
931 >     * source result.
932 >     */
933 >    public void testWhenComplete_normalCompletion1() {
934 >        for (ExecutionMode m : ExecutionMode.values())
935 >        for (boolean createIncomplete : new boolean[] { true, false })
936 >        for (Integer v1 : new Integer[] { 1, null })
937 >    {
938 >        final AtomicInteger a = new AtomicInteger(0);
939 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
940 >        if (!createIncomplete) assertTrue(f.complete(v1));
941 >        final CompletableFuture<Integer> g = m.whenComplete
942 >            (f,
943 >             (Integer x, Throwable t) -> {
944 >                m.checkExecutionMode();
945 >                threadAssertSame(x, v1);
946 >                threadAssertNull(t);
947 >                a.getAndIncrement();
948 >            });
949 >        if (createIncomplete) assertTrue(f.complete(v1));
950 >
951 >        checkCompletedNormally(g, v1);
952 >        checkCompletedNormally(f, v1);
953 >        assertEquals(1, a.get());
954 >    }}
955 >
956 >    /**
957 >     * whenComplete action executes on exceptional completion, propagating
958 >     * source result.
959 >     */
960 >    public void testWhenComplete_exceptionalCompletion() {
961 >        for (ExecutionMode m : ExecutionMode.values())
962 >        for (boolean createIncomplete : new boolean[] { true, false })
963 >    {
964 >        final AtomicInteger a = new AtomicInteger(0);
965 >        final CFException ex = new CFException();
966 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
967 >        if (!createIncomplete) f.completeExceptionally(ex);
968 >        final CompletableFuture<Integer> g = m.whenComplete
969 >            (f,
970 >             (Integer x, Throwable t) -> {
971 >                m.checkExecutionMode();
972 >                threadAssertNull(x);
973 >                threadAssertSame(t, ex);
974 >                a.getAndIncrement();
975 >            });
976 >        if (createIncomplete) f.completeExceptionally(ex);
977 >
978 >        checkCompletedWithWrappedException(g, ex);
979 >        checkCompletedExceptionally(f, ex);
980 >        assertEquals(1, a.get());
981 >    }}
982 >
983 >    /**
984 >     * whenComplete action executes on cancelled source, propagating
985 >     * CancellationException.
986 >     */
987 >    public void testWhenComplete_sourceCancelled() {
988 >        for (ExecutionMode m : ExecutionMode.values())
989 >        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
990 >        for (boolean createIncomplete : new boolean[] { true, false })
991 >    {
992 >        final AtomicInteger a = new AtomicInteger(0);
993 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
994 >        if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
995 >        final CompletableFuture<Integer> g = m.whenComplete
996 >            (f,
997 >             (Integer x, Throwable t) -> {
998 >                m.checkExecutionMode();
999 >                threadAssertNull(x);
1000 >                threadAssertTrue(t instanceof CancellationException);
1001 >                a.getAndIncrement();
1002 >            });
1003 >        if (createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
1004  
1005 <        f = new CompletableFuture<Integer>();
1006 <        r = new ExceptionToInteger();
1007 <        g = f.exceptionally(r);
1008 <        f.complete(one);
390 <        checkCompletedNormally(g, one);
391 <    }
1005 >        checkCompletedWithWrappedCancellationException(g);
1006 >        checkCancelled(f);
1007 >        assertEquals(1, a.get());
1008 >    }}
1009  
1010      /**
1011 <     * handle action completes normally with function value on either
1012 <     * normal or exceptional completion of source
1011 >     * If a whenComplete action throws an exception when triggered by
1012 >     * a normal completion, it completes exceptionally
1013       */
1014 <    public void testHandle() {
1015 <        CompletableFuture<Integer> f, g;
1016 <        IntegerHandler r;
1014 >    public void testWhenComplete_actionFailed() {
1015 >        for (boolean createIncomplete : new boolean[] { true, false })
1016 >        for (ExecutionMode m : ExecutionMode.values())
1017 >        for (Integer v1 : new Integer[] { 1, null })
1018 >    {
1019 >        final AtomicInteger a = new AtomicInteger(0);
1020 >        final CFException ex = new CFException();
1021 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1022 >        if (!createIncomplete) assertTrue(f.complete(v1));
1023 >        final CompletableFuture<Integer> g = m.whenComplete
1024 >            (f,
1025 >             (Integer x, Throwable t) -> {
1026 >                m.checkExecutionMode();
1027 >                threadAssertSame(x, v1);
1028 >                threadAssertNull(t);
1029 >                a.getAndIncrement();
1030 >                throw ex;
1031 >            });
1032 >        if (createIncomplete) assertTrue(f.complete(v1));
1033 >
1034 >        checkCompletedWithWrappedException(g, ex);
1035 >        checkCompletedNormally(f, v1);
1036 >        assertEquals(1, a.get());
1037 >    }}
1038 >
1039 >    /**
1040 >     * If a whenComplete action throws an exception when triggered by
1041 >     * a source completion that also throws an exception, the source
1042 >     * exception takes precedence.
1043 >     */
1044 >    public void testWhenComplete_actionFailedSourceFailed() {
1045 >        for (boolean createIncomplete : new boolean[] { true, false })
1046 >        for (ExecutionMode m : ExecutionMode.values())
1047 >    {
1048 >        final AtomicInteger a = new AtomicInteger(0);
1049 >        final CFException ex1 = new CFException();
1050 >        final CFException ex2 = new CFException();
1051 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1052 >
1053 >        if (!createIncomplete) f.completeExceptionally(ex1);
1054 >        final CompletableFuture<Integer> g = m.whenComplete
1055 >            (f,
1056 >             (Integer x, Throwable t) -> {
1057 >                m.checkExecutionMode();
1058 >                threadAssertSame(t, ex1);
1059 >                threadAssertNull(x);
1060 >                a.getAndIncrement();
1061 >                throw ex2;
1062 >            });
1063 >        if (createIncomplete) f.completeExceptionally(ex1);
1064 >
1065 >        checkCompletedWithWrappedException(g, ex1);
1066 >        checkCompletedExceptionally(f, ex1);
1067 >        assertEquals(1, a.get());
1068 >    }}
1069 >
1070 >    /**
1071 >     * handle action completes normally with function value on normal
1072 >     * completion of source
1073 >     */
1074 >    public void testHandle_normalCompletion() {
1075 >        for (ExecutionMode m : ExecutionMode.values())
1076 >        for (boolean createIncomplete : new boolean[] { true, false })
1077 >        for (Integer v1 : new Integer[] { 1, null })
1078 >    {
1079 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1080 >        final AtomicInteger a = new AtomicInteger(0);
1081 >        if (!createIncomplete) assertTrue(f.complete(v1));
1082 >        final CompletableFuture<Integer> g = m.handle
1083 >            (f,
1084 >             (Integer x, Throwable t) -> {
1085 >                m.checkExecutionMode();
1086 >                threadAssertSame(x, v1);
1087 >                threadAssertNull(t);
1088 >                a.getAndIncrement();
1089 >                return inc(v1);
1090 >            });
1091 >        if (createIncomplete) assertTrue(f.complete(v1));
1092 >
1093 >        checkCompletedNormally(g, inc(v1));
1094 >        checkCompletedNormally(f, v1);
1095 >        assertEquals(1, a.get());
1096 >    }}
1097  
1098 <        f = new CompletableFuture<Integer>();
1099 <        f.completeExceptionally(new CFException());
1100 <        g = f.handle(r = new IntegerHandler());
1101 <        assertTrue(r.ran);
1102 <        checkCompletedNormally(g, three);
1103 <
1104 <        f = new CompletableFuture<Integer>();
1105 <        g = f.handle(r = new IntegerHandler());
1106 <        assertFalse(r.ran);
1107 <        f.completeExceptionally(new CFException());
1108 <        checkCompletedNormally(g, three);
1109 <        assertTrue(r.ran);
1098 >    /**
1099 >     * handle action completes normally with function value on
1100 >     * exceptional completion of source
1101 >     */
1102 >    public void testHandle_exceptionalCompletion() {
1103 >        for (ExecutionMode m : ExecutionMode.values())
1104 >        for (boolean createIncomplete : new boolean[] { true, false })
1105 >        for (Integer v1 : new Integer[] { 1, null })
1106 >    {
1107 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1108 >        final AtomicInteger a = new AtomicInteger(0);
1109 >        final CFException ex = new CFException();
1110 >        if (!createIncomplete) f.completeExceptionally(ex);
1111 >        final CompletableFuture<Integer> g = m.handle
1112 >            (f,
1113 >             (Integer x, Throwable t) -> {
1114 >                m.checkExecutionMode();
1115 >                threadAssertNull(x);
1116 >                threadAssertSame(t, ex);
1117 >                a.getAndIncrement();
1118 >                return v1;
1119 >            });
1120 >        if (createIncomplete) f.completeExceptionally(ex);
1121 >
1122 >        checkCompletedNormally(g, v1);
1123 >        checkCompletedExceptionally(f, ex);
1124 >        assertEquals(1, a.get());
1125 >    }}
1126 >
1127 >    /**
1128 >     * handle action completes normally with function value on
1129 >     * cancelled source
1130 >     */
1131 >    public void testHandle_sourceCancelled() {
1132 >        for (ExecutionMode m : ExecutionMode.values())
1133 >        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1134 >        for (boolean createIncomplete : new boolean[] { true, false })
1135 >        for (Integer v1 : new Integer[] { 1, null })
1136 >    {
1137 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1138 >        final AtomicInteger a = new AtomicInteger(0);
1139 >        if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
1140 >        final CompletableFuture<Integer> g = m.handle
1141 >            (f,
1142 >             (Integer x, Throwable t) -> {
1143 >                m.checkExecutionMode();
1144 >                threadAssertNull(x);
1145 >                threadAssertTrue(t instanceof CancellationException);
1146 >                a.getAndIncrement();
1147 >                return v1;
1148 >            });
1149 >        if (createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
1150  
1151 <        f = new CompletableFuture<Integer>();
1152 <        f.complete(one);
1153 <        g = f.handle(r = new IntegerHandler());
1154 <        assertTrue(r.ran);
418 <        checkCompletedNormally(g, two);
419 <
420 <        f = new CompletableFuture<Integer>();
421 <        g = f.handle(r = new IntegerHandler());
422 <        assertFalse(r.ran);
423 <        f.complete(one);
424 <        assertTrue(r.ran);
425 <        checkCompletedNormally(g, two);
426 <    }
1151 >        checkCompletedNormally(g, v1);
1152 >        checkCancelled(f);
1153 >        assertEquals(1, a.get());
1154 >    }}
1155  
1156      /**
1157 <     * runAsync completes after running Runnable
1157 >     * handle result completes exceptionally if action does
1158       */
1159 <    public void testRunAsync() {
1160 <        Noop r = new Noop();
1161 <        CompletableFuture<Void> f = CompletableFuture.runAsync(r);
1162 <        assertNull(f.join());
1163 <        assertTrue(r.ran);
1164 <        checkCompletedNormally(f, null);
1165 <    }
1159 >    public void testHandle_sourceFailedActionFailed() {
1160 >        for (ExecutionMode m : ExecutionMode.values())
1161 >        for (boolean createIncomplete : new boolean[] { true, false })
1162 >    {
1163 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1164 >        final AtomicInteger a = new AtomicInteger(0);
1165 >        final CFException ex1 = new CFException();
1166 >        final CFException ex2 = new CFException();
1167 >        if (!createIncomplete) f.completeExceptionally(ex1);
1168 >        final CompletableFuture<Integer> g = m.handle
1169 >            (f,
1170 >             (Integer x, Throwable t) -> {
1171 >                m.checkExecutionMode();
1172 >                threadAssertNull(x);
1173 >                threadAssertSame(ex1, t);
1174 >                a.getAndIncrement();
1175 >                throw ex2;
1176 >            });
1177 >        if (createIncomplete) f.completeExceptionally(ex1);
1178 >
1179 >        checkCompletedWithWrappedException(g, ex2);
1180 >        checkCompletedExceptionally(f, ex1);
1181 >        assertEquals(1, a.get());
1182 >    }}
1183 >
1184 >    public void testHandle_sourceCompletedNormallyActionFailed() {
1185 >        for (ExecutionMode m : ExecutionMode.values())
1186 >        for (boolean createIncomplete : new boolean[] { true, false })
1187 >        for (Integer v1 : new Integer[] { 1, null })
1188 >    {
1189 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1190 >        final AtomicInteger a = new AtomicInteger(0);
1191 >        final CFException ex = new CFException();
1192 >        if (!createIncomplete) assertTrue(f.complete(v1));
1193 >        final CompletableFuture<Integer> g = m.handle
1194 >            (f,
1195 >             (Integer x, Throwable t) -> {
1196 >                m.checkExecutionMode();
1197 >                threadAssertSame(x, v1);
1198 >                threadAssertNull(t);
1199 >                a.getAndIncrement();
1200 >                throw ex;
1201 >            });
1202 >        if (createIncomplete) assertTrue(f.complete(v1));
1203 >
1204 >        checkCompletedWithWrappedException(g, ex);
1205 >        checkCompletedNormally(f, v1);
1206 >        assertEquals(1, a.get());
1207 >    }}
1208  
1209      /**
1210 <     * runAsync with executor completes after running Runnable
1210 >     * runAsync completes after running Runnable
1211       */
1212 <    public void testRunAsync2() {
1213 <        Noop r = new Noop();
1214 <        ThreadExecutor exec = new ThreadExecutor();
1215 <        CompletableFuture<Void> f = CompletableFuture.runAsync(r, exec);
1212 >    public void testRunAsync_normalCompletion() {
1213 >        ExecutionMode[] executionModes = {
1214 >            ExecutionMode.ASYNC,
1215 >            ExecutionMode.EXECUTOR,
1216 >        };
1217 >        for (ExecutionMode m : executionModes)
1218 >    {
1219 >        final Noop r = new Noop(m);
1220 >        final CompletableFuture<Void> f = m.runAsync(r);
1221          assertNull(f.join());
447        assertTrue(r.ran);
1222          checkCompletedNormally(f, null);
1223 <        assertEquals(1, exec.count.get());
1224 <    }
1223 >        r.assertInvoked();
1224 >    }}
1225  
1226      /**
1227       * failing runAsync completes exceptionally after running Runnable
1228       */
1229 <    public void testRunAsync3() {
1230 <        FailingNoop r = new FailingNoop();
1231 <        CompletableFuture<Void> f = CompletableFuture.runAsync(r);
1229 >    public void testRunAsync_exceptionalCompletion() {
1230 >        ExecutionMode[] executionModes = {
1231 >            ExecutionMode.ASYNC,
1232 >            ExecutionMode.EXECUTOR,
1233 >        };
1234 >        for (ExecutionMode m : executionModes)
1235 >    {
1236 >        final FailingRunnable r = new FailingRunnable(m);
1237 >        final CompletableFuture<Void> f = m.runAsync(r);
1238          checkCompletedWithWrappedCFException(f);
1239 <        assertTrue(r.ran);
1240 <    }
1239 >        r.assertInvoked();
1240 >    }}
1241  
1242      /**
1243       * supplyAsync completes with result of supplier
1244       */
1245 <    public void testSupplyAsync() {
1246 <        CompletableFuture<Integer> f;
1247 <        f = CompletableFuture.supplyAsync(supplyOne);
1248 <        assertEquals(f.join(), one);
1249 <        checkCompletedNormally(f, one);
1250 <    }
1251 <
1252 <    /**
1253 <     * supplyAsync with executor completes with result of supplier
1254 <     */
1255 <    public void testSupplyAsync2() {
1256 <        CompletableFuture<Integer> f;
1257 <        f = CompletableFuture.supplyAsync(supplyOne, new ThreadExecutor());
1258 <        assertEquals(f.join(), one);
479 <        checkCompletedNormally(f, one);
480 <    }
1245 >    public void testSupplyAsync_normalCompletion() {
1246 >        ExecutionMode[] executionModes = {
1247 >            ExecutionMode.ASYNC,
1248 >            ExecutionMode.EXECUTOR,
1249 >        };
1250 >        for (ExecutionMode m : executionModes)
1251 >        for (Integer v1 : new Integer[] { 1, null })
1252 >    {
1253 >        final IntegerSupplier r = new IntegerSupplier(m, v1);
1254 >        final CompletableFuture<Integer> f = m.supplyAsync(r);
1255 >        assertSame(v1, f.join());
1256 >        checkCompletedNormally(f, v1);
1257 >        r.assertInvoked();
1258 >    }}
1259  
1260      /**
1261       * Failing supplyAsync completes exceptionally
1262       */
1263 <    public void testSupplyAsync3() {
1264 <        FailingSupplier r = new FailingSupplier();
1265 <        CompletableFuture<Integer> f = CompletableFuture.supplyAsync(r);
1263 >    public void testSupplyAsync_exceptionalCompletion() {
1264 >        ExecutionMode[] executionModes = {
1265 >            ExecutionMode.ASYNC,
1266 >            ExecutionMode.EXECUTOR,
1267 >        };
1268 >        for (ExecutionMode m : executionModes)
1269 >    {
1270 >        FailingSupplier r = new FailingSupplier(m);
1271 >        CompletableFuture<Integer> f = m.supplyAsync(r);
1272          checkCompletedWithWrappedCFException(f);
1273 <        assertTrue(r.ran);
1274 <    }
1273 >        r.assertInvoked();
1274 >    }}
1275  
1276      // seq completion methods
1277  
1278      /**
1279       * thenRun result completes normally after normal completion of source
1280       */
1281 <    public void testThenRun() {
1282 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1283 <        Noop r = new Noop();
1284 <        CompletableFuture<Void> g = f.thenRun(r);
1285 <        f.complete(null);
1286 <        checkCompletedNormally(g, null);
1287 <        // reordered version
1288 <        f = new CompletableFuture<Integer>();
1289 <        f.complete(null);
1290 <        r = new Noop();
1291 <        g = f.thenRun(r);
1292 <        checkCompletedNormally(g, null);
1293 <    }
1281 >    public void testThenRun_normalCompletion() {
1282 >        for (ExecutionMode m : ExecutionMode.values())
1283 >        for (Integer v1 : new Integer[] { 1, null })
1284 >    {
1285 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1286 >        final Noop[] rs = new Noop[6];
1287 >        for (int i = 0; i < rs.length; i++) rs[i] = new Noop(m);
1288 >
1289 >        final CompletableFuture<Void> h0 = m.thenRun(f, rs[0]);
1290 >        final CompletableFuture<Void> h1 = m.runAfterBoth(f, f, rs[1]);
1291 >        final CompletableFuture<Void> h2 = m.runAfterEither(f, f, rs[2]);
1292 >        checkIncomplete(h0);
1293 >        checkIncomplete(h1);
1294 >        checkIncomplete(h2);
1295 >        assertTrue(f.complete(v1));
1296 >        final CompletableFuture<Void> h3 = m.thenRun(f, rs[3]);
1297 >        final CompletableFuture<Void> h4 = m.runAfterBoth(f, f, rs[4]);
1298 >        final CompletableFuture<Void> h5 = m.runAfterEither(f, f, rs[5]);
1299 >
1300 >        checkCompletedNormally(h0, null);
1301 >        checkCompletedNormally(h1, null);
1302 >        checkCompletedNormally(h2, null);
1303 >        checkCompletedNormally(h3, null);
1304 >        checkCompletedNormally(h4, null);
1305 >        checkCompletedNormally(h5, null);
1306 >        checkCompletedNormally(f, v1);
1307 >        for (Noop r : rs) r.assertInvoked();
1308 >    }}
1309  
1310      /**
1311       * thenRun result completes exceptionally after exceptional
1312       * completion of source
1313       */
1314 <    public void testThenRun2() {
1315 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1316 <        Noop r = new Noop();
1317 <        CompletableFuture<Void> g = f.thenRun(r);
1318 <        f.completeExceptionally(new CFException());
1319 <        checkCompletedWithWrappedCFException(g);
1320 <    }
1314 >    public void testThenRun_exceptionalCompletion() {
1315 >        for (ExecutionMode m : ExecutionMode.values())
1316 >    {
1317 >        final CFException ex = new CFException();
1318 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1319 >        final Noop[] rs = new Noop[6];
1320 >        for (int i = 0; i < rs.length; i++) rs[i] = new Noop(m);
1321 >
1322 >        final CompletableFuture<Void> h0 = m.thenRun(f, rs[0]);
1323 >        final CompletableFuture<Void> h1 = m.runAfterBoth(f, f, rs[1]);
1324 >        final CompletableFuture<Void> h2 = m.runAfterEither(f, f, rs[2]);
1325 >        checkIncomplete(h0);
1326 >        checkIncomplete(h1);
1327 >        checkIncomplete(h2);
1328 >        assertTrue(f.completeExceptionally(ex));
1329 >        final CompletableFuture<Void> h3 = m.thenRun(f, rs[3]);
1330 >        final CompletableFuture<Void> h4 = m.runAfterBoth(f, f, rs[4]);
1331 >        final CompletableFuture<Void> h5 = m.runAfterEither(f, f, rs[5]);
1332 >
1333 >        checkCompletedWithWrappedException(h0, ex);
1334 >        checkCompletedWithWrappedException(h1, ex);
1335 >        checkCompletedWithWrappedException(h2, ex);
1336 >        checkCompletedWithWrappedException(h3, ex);
1337 >        checkCompletedWithWrappedException(h4, ex);
1338 >        checkCompletedWithWrappedException(h5, ex);
1339 >        checkCompletedExceptionally(f, ex);
1340 >        for (Noop r : rs) r.assertNotInvoked();
1341 >    }}
1342  
1343      /**
1344 <     * thenRun result completes exceptionally if action does
1344 >     * thenRun result completes exceptionally if source cancelled
1345       */
1346 <    public void testThenRun3() {
1347 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1348 <        FailingNoop r = new FailingNoop();
1349 <        CompletableFuture<Void> g = f.thenRun(r);
1350 <        f.complete(null);
1351 <        checkCompletedWithWrappedCFException(g);
1352 <    }
1346 >    public void testThenRun_sourceCancelled() {
1347 >        for (ExecutionMode m : ExecutionMode.values())
1348 >        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1349 >    {
1350 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1351 >        final Noop[] rs = new Noop[6];
1352 >        for (int i = 0; i < rs.length; i++) rs[i] = new Noop(m);
1353 >
1354 >        final CompletableFuture<Void> h0 = m.thenRun(f, rs[0]);
1355 >        final CompletableFuture<Void> h1 = m.runAfterBoth(f, f, rs[1]);
1356 >        final CompletableFuture<Void> h2 = m.runAfterEither(f, f, rs[2]);
1357 >        checkIncomplete(h0);
1358 >        checkIncomplete(h1);
1359 >        checkIncomplete(h2);
1360 >        assertTrue(f.cancel(mayInterruptIfRunning));
1361 >        final CompletableFuture<Void> h3 = m.thenRun(f, rs[3]);
1362 >        final CompletableFuture<Void> h4 = m.runAfterBoth(f, f, rs[4]);
1363 >        final CompletableFuture<Void> h5 = m.runAfterEither(f, f, rs[5]);
1364 >
1365 >        checkCompletedWithWrappedCancellationException(h0);
1366 >        checkCompletedWithWrappedCancellationException(h1);
1367 >        checkCompletedWithWrappedCancellationException(h2);
1368 >        checkCompletedWithWrappedCancellationException(h3);
1369 >        checkCompletedWithWrappedCancellationException(h4);
1370 >        checkCompletedWithWrappedCancellationException(h5);
1371 >        checkCancelled(f);
1372 >        for (Noop r : rs) r.assertNotInvoked();
1373 >    }}
1374  
1375      /**
1376 <     * thenRun result completes exceptionally if source cancelled
1376 >     * thenRun result completes exceptionally if action does
1377       */
1378 <    public void testThenRun4() {
1379 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1380 <        Noop r = new Noop();
1381 <        CompletableFuture<Void> g = f.thenRun(r);
1382 <        assertTrue(f.cancel(true));
1383 <        checkCompletedWithWrappedCancellationException(g);
1384 <    }
1378 >    public void testThenRun_actionFailed() {
1379 >        for (ExecutionMode m : ExecutionMode.values())
1380 >        for (Integer v1 : new Integer[] { 1, null })
1381 >    {
1382 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1383 >        final FailingRunnable[] rs = new FailingRunnable[6];
1384 >        for (int i = 0; i < rs.length; i++) rs[i] = new FailingRunnable(m);
1385 >
1386 >        final CompletableFuture<Void> h0 = m.thenRun(f, rs[0]);
1387 >        final CompletableFuture<Void> h1 = m.runAfterBoth(f, f, rs[1]);
1388 >        final CompletableFuture<Void> h2 = m.runAfterEither(f, f, rs[2]);
1389 >        assertTrue(f.complete(v1));
1390 >        final CompletableFuture<Void> h3 = m.thenRun(f, rs[3]);
1391 >        final CompletableFuture<Void> h4 = m.runAfterBoth(f, f, rs[4]);
1392 >        final CompletableFuture<Void> h5 = m.runAfterEither(f, f, rs[5]);
1393 >
1394 >        checkCompletedWithWrappedCFException(h0);
1395 >        checkCompletedWithWrappedCFException(h1);
1396 >        checkCompletedWithWrappedCFException(h2);
1397 >        checkCompletedWithWrappedCFException(h3);
1398 >        checkCompletedWithWrappedCFException(h4);
1399 >        checkCompletedWithWrappedCFException(h5);
1400 >        checkCompletedNormally(f, v1);
1401 >    }}
1402  
1403      /**
1404       * thenApply result completes normally after normal completion of source
1405       */
1406 <    public void testThenApply() {
1407 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1408 <        CompletableFuture<Integer> g = f.thenApply(inc);
1409 <        f.complete(one);
1410 <        checkCompletedNormally(g, two);
1411 <    }
1406 >    public void testThenApply_normalCompletion() {
1407 >        for (ExecutionMode m : ExecutionMode.values())
1408 >        for (Integer v1 : new Integer[] { 1, null })
1409 >    {
1410 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1411 >        final IncFunction[] rs = new IncFunction[4];
1412 >        for (int i = 0; i < rs.length; i++) rs[i] = new IncFunction(m);
1413 >
1414 >        final CompletableFuture<Integer> h0 = m.thenApply(f, rs[0]);
1415 >        final CompletableFuture<Integer> h1 = m.applyToEither(f, f, rs[1]);
1416 >        checkIncomplete(h0);
1417 >        checkIncomplete(h1);
1418 >        assertTrue(f.complete(v1));
1419 >        final CompletableFuture<Integer> h2 = m.thenApply(f, rs[2]);
1420 >        final CompletableFuture<Integer> h3 = m.applyToEither(f, f, rs[3]);
1421 >
1422 >        checkCompletedNormally(h0, inc(v1));
1423 >        checkCompletedNormally(h1, inc(v1));
1424 >        checkCompletedNormally(h2, inc(v1));
1425 >        checkCompletedNormally(h3, inc(v1));
1426 >        checkCompletedNormally(f, v1);
1427 >        for (IncFunction r : rs) r.assertValue(inc(v1));
1428 >    }}
1429  
1430      /**
1431       * thenApply result completes exceptionally after exceptional
1432       * completion of source
1433       */
1434 <    public void testThenApply2() {
1435 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1436 <        CompletableFuture<Integer> g = f.thenApply(inc);
1437 <        f.completeExceptionally(new CFException());
1438 <        checkCompletedWithWrappedCFException(g);
1439 <    }
1434 >    public void testThenApply_exceptionalCompletion() {
1435 >        for (ExecutionMode m : ExecutionMode.values())
1436 >    {
1437 >        final CFException ex = new CFException();
1438 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1439 >        final IncFunction[] rs = new IncFunction[4];
1440 >        for (int i = 0; i < rs.length; i++) rs[i] = new IncFunction(m);
1441 >
1442 >        final CompletableFuture<Integer> h0 = m.thenApply(f, rs[0]);
1443 >        final CompletableFuture<Integer> h1 = m.applyToEither(f, f, rs[1]);
1444 >        assertTrue(f.completeExceptionally(ex));
1445 >        final CompletableFuture<Integer> h2 = m.thenApply(f, rs[2]);
1446 >        final CompletableFuture<Integer> h3 = m.applyToEither(f, f, rs[3]);
1447 >
1448 >        checkCompletedWithWrappedException(h0, ex);
1449 >        checkCompletedWithWrappedException(h1, ex);
1450 >        checkCompletedWithWrappedException(h2, ex);
1451 >        checkCompletedWithWrappedException(h3, ex);
1452 >        checkCompletedExceptionally(f, ex);
1453 >        for (IncFunction r : rs) r.assertNotInvoked();
1454 >    }}
1455  
1456      /**
1457 <     * thenApply result completes exceptionally if action does
1457 >     * thenApply result completes exceptionally if source cancelled
1458       */
1459 <    public void testThenApply3() {
1460 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1461 <        CompletableFuture<Integer> g = f.thenApply(new FailingFunction());
1462 <        f.complete(one);
1463 <        checkCompletedWithWrappedCFException(g);
1464 <    }
1459 >    public void testThenApply_sourceCancelled() {
1460 >        for (ExecutionMode m : ExecutionMode.values())
1461 >        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1462 >    {
1463 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1464 >        final IncFunction[] rs = new IncFunction[4];
1465 >        for (int i = 0; i < rs.length; i++) rs[i] = new IncFunction(m);
1466 >
1467 >        final CompletableFuture<Integer> h0 = m.thenApply(f, rs[0]);
1468 >        final CompletableFuture<Integer> h1 = m.applyToEither(f, f, rs[1]);
1469 >        assertTrue(f.cancel(mayInterruptIfRunning));
1470 >        final CompletableFuture<Integer> h2 = m.thenApply(f, rs[2]);
1471 >        final CompletableFuture<Integer> h3 = m.applyToEither(f, f, rs[3]);
1472 >
1473 >        checkCompletedWithWrappedCancellationException(h0);
1474 >        checkCompletedWithWrappedCancellationException(h1);
1475 >        checkCompletedWithWrappedCancellationException(h2);
1476 >        checkCompletedWithWrappedCancellationException(h3);
1477 >        checkCancelled(f);
1478 >        for (IncFunction r : rs) r.assertNotInvoked();
1479 >    }}
1480  
1481      /**
1482 <     * thenApply result completes exceptionally if source cancelled
1482 >     * thenApply result completes exceptionally if action does
1483       */
1484 <    public void testThenApply4() {
1485 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1486 <        CompletableFuture<Integer> g = f.thenApply(inc);
1487 <        assertTrue(f.cancel(true));
1488 <        checkCompletedWithWrappedCancellationException(g);
1489 <    }
1484 >    public void testThenApply_actionFailed() {
1485 >        for (ExecutionMode m : ExecutionMode.values())
1486 >        for (Integer v1 : new Integer[] { 1, null })
1487 >    {
1488 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1489 >        final FailingFunction[] rs = new FailingFunction[4];
1490 >        for (int i = 0; i < rs.length; i++) rs[i] = new FailingFunction(m);
1491 >
1492 >        final CompletableFuture<Integer> h0 = m.thenApply(f, rs[0]);
1493 >        final CompletableFuture<Integer> h1 = m.applyToEither(f, f, rs[1]);
1494 >        assertTrue(f.complete(v1));
1495 >        final CompletableFuture<Integer> h2 = m.thenApply(f, rs[2]);
1496 >        final CompletableFuture<Integer> h3 = m.applyToEither(f, f, rs[3]);
1497 >
1498 >        checkCompletedWithWrappedCFException(h0);
1499 >        checkCompletedWithWrappedCFException(h1);
1500 >        checkCompletedWithWrappedCFException(h2);
1501 >        checkCompletedWithWrappedCFException(h3);
1502 >        checkCompletedNormally(f, v1);
1503 >    }}
1504  
1505      /**
1506       * thenAccept result completes normally after normal completion of source
1507       */
1508 <    public void testThenAccept() {
1509 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1510 <        IncAction r = new IncAction();
1511 <        CompletableFuture<Void> g = f.thenAccept(r);
1512 <        f.complete(one);
1513 <        checkCompletedNormally(g, null);
1514 <        assertEquals(r.value, 2);
1515 <    }
1508 >    public void testThenAccept_normalCompletion() {
1509 >        for (ExecutionMode m : ExecutionMode.values())
1510 >        for (Integer v1 : new Integer[] { 1, null })
1511 >    {
1512 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1513 >        final NoopConsumer[] rs = new NoopConsumer[4];
1514 >        for (int i = 0; i < rs.length; i++) rs[i] = new NoopConsumer(m);
1515 >
1516 >        final CompletableFuture<Void> h0 = m.thenAccept(f, rs[0]);
1517 >        final CompletableFuture<Void> h1 = m.acceptEither(f, f, rs[1]);
1518 >        checkIncomplete(h0);
1519 >        checkIncomplete(h1);
1520 >        assertTrue(f.complete(v1));
1521 >        final CompletableFuture<Void> h2 = m.thenAccept(f, rs[2]);
1522 >        final CompletableFuture<Void> h3 = m.acceptEither(f, f, rs[3]);
1523 >
1524 >        checkCompletedNormally(h0, null);
1525 >        checkCompletedNormally(h1, null);
1526 >        checkCompletedNormally(h2, null);
1527 >        checkCompletedNormally(h3, null);
1528 >        checkCompletedNormally(f, v1);
1529 >        for (NoopConsumer r : rs) r.assertValue(v1);
1530 >    }}
1531  
1532      /**
1533       * thenAccept result completes exceptionally after exceptional
1534       * completion of source
1535       */
1536 <    public void testThenAccept2() {
1537 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1538 <        IncAction r = new IncAction();
1539 <        CompletableFuture<Void> g = f.thenAccept(r);
1540 <        f.completeExceptionally(new CFException());
1541 <        checkCompletedWithWrappedCFException(g);
1542 <    }
1536 >    public void testThenAccept_exceptionalCompletion() {
1537 >        for (ExecutionMode m : ExecutionMode.values())
1538 >    {
1539 >        final CFException ex = new CFException();
1540 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1541 >        final NoopConsumer[] rs = new NoopConsumer[4];
1542 >        for (int i = 0; i < rs.length; i++) rs[i] = new NoopConsumer(m);
1543 >
1544 >        final CompletableFuture<Void> h0 = m.thenAccept(f, rs[0]);
1545 >        final CompletableFuture<Void> h1 = m.acceptEither(f, f, rs[1]);
1546 >        assertTrue(f.completeExceptionally(ex));
1547 >        final CompletableFuture<Void> h2 = m.thenAccept(f, rs[2]);
1548 >        final CompletableFuture<Void> h3 = m.acceptEither(f, f, rs[3]);
1549 >
1550 >        checkCompletedWithWrappedException(h0, ex);
1551 >        checkCompletedWithWrappedException(h1, ex);
1552 >        checkCompletedWithWrappedException(h2, ex);
1553 >        checkCompletedWithWrappedException(h3, ex);
1554 >        checkCompletedExceptionally(f, ex);
1555 >        for (NoopConsumer r : rs) r.assertNotInvoked();
1556 >    }}
1557  
1558      /**
1559 <     * thenAccept result completes exceptionally if action does
1559 >     * thenAccept result completes exceptionally if source cancelled
1560       */
1561 <    public void testThenAccept3() {
1562 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1563 <        FailingConsumer r = new FailingConsumer();
1564 <        CompletableFuture<Void> g = f.thenAccept(r);
1565 <        f.complete(one);
1566 <        checkCompletedWithWrappedCFException(g);
1567 <        assertTrue(r.ran);
1568 <    }
1561 >    public void testThenAccept_sourceCancelled() {
1562 >        for (ExecutionMode m : ExecutionMode.values())
1563 >        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1564 >    {
1565 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1566 >        final NoopConsumer[] rs = new NoopConsumer[4];
1567 >        for (int i = 0; i < rs.length; i++) rs[i] = new NoopConsumer(m);
1568 >
1569 >        final CompletableFuture<Void> h0 = m.thenAccept(f, rs[0]);
1570 >        final CompletableFuture<Void> h1 = m.acceptEither(f, f, rs[1]);
1571 >        assertTrue(f.cancel(mayInterruptIfRunning));
1572 >        final CompletableFuture<Void> h2 = m.thenAccept(f, rs[2]);
1573 >        final CompletableFuture<Void> h3 = m.acceptEither(f, f, rs[3]);
1574 >
1575 >        checkCompletedWithWrappedCancellationException(h0);
1576 >        checkCompletedWithWrappedCancellationException(h1);
1577 >        checkCompletedWithWrappedCancellationException(h2);
1578 >        checkCompletedWithWrappedCancellationException(h3);
1579 >        checkCancelled(f);
1580 >        for (NoopConsumer r : rs) r.assertNotInvoked();
1581 >    }}
1582  
1583      /**
1584 <     * thenAccept result completes exceptionally if source cancelled
1584 >     * thenAccept result completes exceptionally if action does
1585       */
1586 <    public void testThenAccept4() {
1587 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1588 <        IncAction r = new IncAction();
1589 <        CompletableFuture<Void> g = f.thenAccept(r);
1590 <        assertTrue(f.cancel(true));
1591 <        checkCompletedWithWrappedCancellationException(g);
1592 <    }
1593 <
1586 >    public void testThenAccept_actionFailed() {
1587 >        for (ExecutionMode m : ExecutionMode.values())
1588 >        for (Integer v1 : new Integer[] { 1, null })
1589 >    {
1590 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1591 >        final FailingConsumer[] rs = new FailingConsumer[4];
1592 >        for (int i = 0; i < rs.length; i++) rs[i] = new FailingConsumer(m);
1593 >
1594 >        final CompletableFuture<Void> h0 = m.thenAccept(f, rs[0]);
1595 >        final CompletableFuture<Void> h1 = m.acceptEither(f, f, rs[1]);
1596 >        assertTrue(f.complete(v1));
1597 >        final CompletableFuture<Void> h2 = m.thenAccept(f, rs[2]);
1598 >        final CompletableFuture<Void> h3 = m.acceptEither(f, f, rs[3]);
1599 >
1600 >        checkCompletedWithWrappedCFException(h0);
1601 >        checkCompletedWithWrappedCFException(h1);
1602 >        checkCompletedWithWrappedCFException(h2);
1603 >        checkCompletedWithWrappedCFException(h3);
1604 >        checkCompletedNormally(f, v1);
1605 >    }}
1606  
1607      /**
1608       * thenCombine result completes normally after normal completion
1609       * of sources
1610       */
1611 <    public void testThenCombine() {
1612 <        CompletableFuture<Integer> f, g, h;
1613 <
1614 <        f = new CompletableFuture<Integer>();
1615 <        g = new CompletableFuture<Integer>();
1616 <        h = f.thenCombine(g, subtract);
1617 <        f.complete(3);
1618 <        checkIncomplete(h);
1619 <        g.complete(1);
1620 <        checkCompletedNormally(h, 2);
1621 <
1622 <        f = new CompletableFuture<Integer>();
1623 <        g = new CompletableFuture<Integer>();
1624 <        h = f.thenCombine(g, subtract);
1625 <        g.complete(1);
1626 <        checkIncomplete(h);
1627 <        f.complete(3);
1628 <        checkCompletedNormally(h, 2);
1629 <
1630 <        f = new CompletableFuture<Integer>();
1631 <        g = new CompletableFuture<Integer>();
1632 <        g.complete(1);
1633 <        f.complete(3);
1634 <        h = f.thenCombine(g, subtract);
1635 <        checkCompletedNormally(h, 2);
1636 <    }
1611 >    public void testThenCombine_normalCompletion() {
1612 >        for (ExecutionMode m : ExecutionMode.values())
1613 >        for (boolean fFirst : new boolean[] { true, false })
1614 >        for (Integer v1 : new Integer[] { 1, null })
1615 >        for (Integer v2 : new Integer[] { 2, null })
1616 >    {
1617 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1618 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
1619 >        final SubtractFunction[] rs = new SubtractFunction[6];
1620 >        for (int i = 0; i < rs.length; i++) rs[i] = new SubtractFunction(m);
1621 >
1622 >        final CompletableFuture<Integer> fst =  fFirst ? f : g;
1623 >        final CompletableFuture<Integer> snd = !fFirst ? f : g;
1624 >        final Integer w1 =  fFirst ? v1 : v2;
1625 >        final Integer w2 = !fFirst ? v1 : v2;
1626 >
1627 >        final CompletableFuture<Integer> h0 = m.thenCombine(f, g, rs[0]);
1628 >        final CompletableFuture<Integer> h1 = m.thenCombine(fst, fst, rs[1]);
1629 >        assertTrue(fst.complete(w1));
1630 >        final CompletableFuture<Integer> h2 = m.thenCombine(f, g, rs[2]);
1631 >        final CompletableFuture<Integer> h3 = m.thenCombine(fst, fst, rs[3]);
1632 >        checkIncomplete(h0); rs[0].assertNotInvoked();
1633 >        checkIncomplete(h2); rs[2].assertNotInvoked();
1634 >        checkCompletedNormally(h1, subtract(w1, w1));
1635 >        checkCompletedNormally(h3, subtract(w1, w1));
1636 >        rs[1].assertValue(subtract(w1, w1));
1637 >        rs[3].assertValue(subtract(w1, w1));
1638 >        assertTrue(snd.complete(w2));
1639 >        final CompletableFuture<Integer> h4 = m.thenCombine(f, g, rs[4]);
1640 >
1641 >        checkCompletedNormally(h0, subtract(v1, v2));
1642 >        checkCompletedNormally(h2, subtract(v1, v2));
1643 >        checkCompletedNormally(h4, subtract(v1, v2));
1644 >        rs[0].assertValue(subtract(v1, v2));
1645 >        rs[2].assertValue(subtract(v1, v2));
1646 >        rs[4].assertValue(subtract(v1, v2));
1647 >
1648 >        checkCompletedNormally(f, v1);
1649 >        checkCompletedNormally(g, v2);
1650 >    }}
1651  
1652      /**
1653       * thenCombine result completes exceptionally after exceptional
1654       * completion of either source
1655       */
1656 <    public void testThenCombine2() {
1657 <        CompletableFuture<Integer> f, g, h;
1658 <
1659 <        f = new CompletableFuture<Integer>();
1660 <        g = new CompletableFuture<Integer>();
1661 <        h = f.thenCombine(g, subtract);
1662 <        f.completeExceptionally(new CFException());
1663 <        checkIncomplete(h);
1664 <        g.complete(1);
1665 <        checkCompletedWithWrappedCFException(h);
1666 <
1667 <        f = new CompletableFuture<Integer>();
1668 <        g = new CompletableFuture<Integer>();
1669 <        h = f.thenCombine(g, subtract);
1670 <        g.completeExceptionally(new CFException());
1671 <        checkIncomplete(h);
1672 <        f.complete(3);
1673 <        checkCompletedWithWrappedCFException(h);
1674 <
1675 <        f = new CompletableFuture<Integer>();
1676 <        g = new CompletableFuture<Integer>();
1677 <        f.complete(3);
1678 <        g.completeExceptionally(new CFException());
1679 <        h = f.thenCombine(g, subtract);
1680 <        checkCompletedWithWrappedCFException(h);
1681 <
1682 <        f = new CompletableFuture<Integer>();
1683 <        g = new CompletableFuture<Integer>();
1684 <        f.completeExceptionally(new CFException());
1685 <        g.complete(3);
1686 <        h = f.thenCombine(g, subtract);
1687 <        checkCompletedWithWrappedCFException(h);
1688 <    }
1656 >    public void testThenCombine_exceptionalCompletion() throws Throwable {
1657 >        for (ExecutionMode m : ExecutionMode.values())
1658 >        for (boolean fFirst : new boolean[] { true, false })
1659 >        for (boolean failFirst : new boolean[] { true, false })
1660 >        for (Integer v1 : new Integer[] { 1, null })
1661 >    {
1662 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1663 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
1664 >        final CFException ex = new CFException();
1665 >        final SubtractFunction r1 = new SubtractFunction(m);
1666 >        final SubtractFunction r2 = new SubtractFunction(m);
1667 >        final SubtractFunction r3 = new SubtractFunction(m);
1668 >
1669 >        final CompletableFuture<Integer> fst =  fFirst ? f : g;
1670 >        final CompletableFuture<Integer> snd = !fFirst ? f : g;
1671 >        final Callable<Boolean> complete1 = failFirst ?
1672 >            () -> fst.completeExceptionally(ex) :
1673 >            () -> fst.complete(v1);
1674 >        final Callable<Boolean> complete2 = failFirst ?
1675 >            () -> snd.complete(v1) :
1676 >            () -> snd.completeExceptionally(ex);
1677 >
1678 >        final CompletableFuture<Integer> h1 = m.thenCombine(f, g, r1);
1679 >        assertTrue(complete1.call());
1680 >        final CompletableFuture<Integer> h2 = m.thenCombine(f, g, r2);
1681 >        checkIncomplete(h1);
1682 >        checkIncomplete(h2);
1683 >        assertTrue(complete2.call());
1684 >        final CompletableFuture<Integer> h3 = m.thenCombine(f, g, r3);
1685 >
1686 >        checkCompletedWithWrappedException(h1, ex);
1687 >        checkCompletedWithWrappedException(h2, ex);
1688 >        checkCompletedWithWrappedException(h3, ex);
1689 >        r1.assertNotInvoked();
1690 >        r2.assertNotInvoked();
1691 >        r3.assertNotInvoked();
1692 >        checkCompletedNormally(failFirst ? snd : fst, v1);
1693 >        checkCompletedExceptionally(failFirst ? fst : snd, ex);
1694 >    }}
1695  
1696      /**
1697 <     * thenCombine result completes exceptionally if action does
1697 >     * thenCombine result completes exceptionally if either source cancelled
1698       */
1699 <    public void testThenCombine3() {
1700 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1701 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1702 <        FailingBiFunction r = new FailingBiFunction();
1703 <        CompletableFuture<Integer> g = f.thenCombine(f2, r);
1704 <        f.complete(one);
1705 <        checkIncomplete(g);
1706 <        assertFalse(r.ran);
1707 <        f2.complete(two);
1708 <        checkCompletedWithWrappedCFException(g);
1709 <        assertTrue(r.ran);
1710 <    }
1699 >    public void testThenCombine_sourceCancelled() throws Throwable {
1700 >        for (ExecutionMode m : ExecutionMode.values())
1701 >        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1702 >        for (boolean fFirst : new boolean[] { true, false })
1703 >        for (boolean failFirst : new boolean[] { true, false })
1704 >        for (Integer v1 : new Integer[] { 1, null })
1705 >    {
1706 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1707 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
1708 >        final SubtractFunction r1 = new SubtractFunction(m);
1709 >        final SubtractFunction r2 = new SubtractFunction(m);
1710 >        final SubtractFunction r3 = new SubtractFunction(m);
1711 >
1712 >        final CompletableFuture<Integer> fst =  fFirst ? f : g;
1713 >        final CompletableFuture<Integer> snd = !fFirst ? f : g;
1714 >        final Callable<Boolean> complete1 = failFirst ?
1715 >            () -> fst.cancel(mayInterruptIfRunning) :
1716 >            () -> fst.complete(v1);
1717 >        final Callable<Boolean> complete2 = failFirst ?
1718 >            () -> snd.complete(v1) :
1719 >            () -> snd.cancel(mayInterruptIfRunning);
1720 >
1721 >        final CompletableFuture<Integer> h1 = m.thenCombine(f, g, r1);
1722 >        assertTrue(complete1.call());
1723 >        final CompletableFuture<Integer> h2 = m.thenCombine(f, g, r2);
1724 >        checkIncomplete(h1);
1725 >        checkIncomplete(h2);
1726 >        assertTrue(complete2.call());
1727 >        final CompletableFuture<Integer> h3 = m.thenCombine(f, g, r3);
1728 >
1729 >        checkCompletedWithWrappedCancellationException(h1);
1730 >        checkCompletedWithWrappedCancellationException(h2);
1731 >        checkCompletedWithWrappedCancellationException(h3);
1732 >        r1.assertNotInvoked();
1733 >        r2.assertNotInvoked();
1734 >        r3.assertNotInvoked();
1735 >        checkCompletedNormally(failFirst ? snd : fst, v1);
1736 >        checkCancelled(failFirst ? fst : snd);
1737 >    }}
1738  
1739      /**
1740 <     * thenCombine result completes exceptionally if either source cancelled
1740 >     * thenCombine result completes exceptionally if action does
1741       */
1742 <    public void testThenCombine4() {
1743 <        CompletableFuture<Integer> f, g, h;
1744 <
1745 <        f = new CompletableFuture<Integer>();
1746 <        g = new CompletableFuture<Integer>();
1747 <        h = f.thenCombine(g, subtract);
1748 <        assertTrue(f.cancel(true));
1749 <        checkIncomplete(h);
1750 <        g.complete(1);
1751 <        checkCompletedWithWrappedCancellationException(h);
1752 <
1753 <        f = new CompletableFuture<Integer>();
1754 <        g = new CompletableFuture<Integer>();
1755 <        h = f.thenCombine(g, subtract);
1756 <        assertTrue(g.cancel(true));
1757 <        checkIncomplete(h);
1758 <        f.complete(3);
1759 <        checkCompletedWithWrappedCancellationException(h);
1760 <
1761 <        f = new CompletableFuture<Integer>();
1762 <        g = new CompletableFuture<Integer>();
1763 <        assertTrue(f.cancel(true));
1764 <        assertTrue(g.cancel(true));
1765 <        h = f.thenCombine(g, subtract);
1766 <        checkCompletedWithWrappedCancellationException(h);
1767 <    }
1742 >    public void testThenCombine_actionFailed() {
1743 >        for (ExecutionMode m : ExecutionMode.values())
1744 >        for (boolean fFirst : new boolean[] { true, false })
1745 >        for (Integer v1 : new Integer[] { 1, null })
1746 >        for (Integer v2 : new Integer[] { 2, null })
1747 >    {
1748 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1749 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
1750 >        final FailingBiFunction r1 = new FailingBiFunction(m);
1751 >        final FailingBiFunction r2 = new FailingBiFunction(m);
1752 >        final FailingBiFunction r3 = new FailingBiFunction(m);
1753 >
1754 >        final CompletableFuture<Integer> fst =  fFirst ? f : g;
1755 >        final CompletableFuture<Integer> snd = !fFirst ? f : g;
1756 >        final Integer w1 =  fFirst ? v1 : v2;
1757 >        final Integer w2 = !fFirst ? v1 : v2;
1758 >
1759 >        final CompletableFuture<Integer> h1 = m.thenCombine(f, g, r1);
1760 >        assertTrue(fst.complete(w1));
1761 >        final CompletableFuture<Integer> h2 = m.thenCombine(f, g, r2);
1762 >        assertTrue(snd.complete(w2));
1763 >        final CompletableFuture<Integer> h3 = m.thenCombine(f, g, r3);
1764 >
1765 >        checkCompletedWithWrappedCFException(h1);
1766 >        checkCompletedWithWrappedCFException(h2);
1767 >        checkCompletedWithWrappedCFException(h3);
1768 >        r1.assertInvoked();
1769 >        r2.assertInvoked();
1770 >        r3.assertInvoked();
1771 >        checkCompletedNormally(f, v1);
1772 >        checkCompletedNormally(g, v2);
1773 >    }}
1774  
1775      /**
1776       * thenAcceptBoth result completes normally after normal
1777       * completion of sources
1778       */
1779 <    public void testThenAcceptBoth() {
1780 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1781 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1782 <        AddAction r = new AddAction();
1783 <        CompletableFuture<Void> g = f.thenAcceptBoth(f2, r);
1784 <        f.complete(one);
1785 <        checkIncomplete(g);
1786 <        f2.complete(two);
1787 <        checkCompletedNormally(g, null);
1788 <        assertEquals(r.value, 3);
1789 <
1790 <        r = new AddAction();
1791 <        f = new CompletableFuture<Integer>();
1792 <        f.complete(one);
1793 <        f2 = new CompletableFuture<Integer>();
1794 <        g = f.thenAcceptBoth(f2, r);
1795 <        checkIncomplete(g);
1796 <        f2.complete(two);
1797 <        checkCompletedNormally(g, null);
1798 <        assertEquals(r.value, 3);
1799 <    }
1779 >    public void testThenAcceptBoth_normalCompletion() {
1780 >        for (ExecutionMode m : ExecutionMode.values())
1781 >        for (boolean fFirst : new boolean[] { true, false })
1782 >        for (Integer v1 : new Integer[] { 1, null })
1783 >        for (Integer v2 : new Integer[] { 2, null })
1784 >    {
1785 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1786 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
1787 >        final SubtractAction r1 = new SubtractAction(m);
1788 >        final SubtractAction r2 = new SubtractAction(m);
1789 >        final SubtractAction r3 = new SubtractAction(m);
1790 >
1791 >        final CompletableFuture<Integer> fst =  fFirst ? f : g;
1792 >        final CompletableFuture<Integer> snd = !fFirst ? f : g;
1793 >        final Integer w1 =  fFirst ? v1 : v2;
1794 >        final Integer w2 = !fFirst ? v1 : v2;
1795 >
1796 >        final CompletableFuture<Void> h1 = m.thenAcceptBoth(f, g, r1);
1797 >        assertTrue(fst.complete(w1));
1798 >        final CompletableFuture<Void> h2 = m.thenAcceptBoth(f, g, r2);
1799 >        checkIncomplete(h1);
1800 >        checkIncomplete(h2);
1801 >        r1.assertNotInvoked();
1802 >        r2.assertNotInvoked();
1803 >        assertTrue(snd.complete(w2));
1804 >        final CompletableFuture<Void> h3 = m.thenAcceptBoth(f, g, r3);
1805 >
1806 >        checkCompletedNormally(h1, null);
1807 >        checkCompletedNormally(h2, null);
1808 >        checkCompletedNormally(h3, null);
1809 >        r1.assertValue(subtract(v1, v2));
1810 >        r2.assertValue(subtract(v1, v2));
1811 >        r3.assertValue(subtract(v1, v2));
1812 >        checkCompletedNormally(f, v1);
1813 >        checkCompletedNormally(g, v2);
1814 >    }}
1815  
1816      /**
1817       * thenAcceptBoth result completes exceptionally after exceptional
1818       * completion of either source
1819       */
1820 <    public void testThenAcceptBoth2() {
1821 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1822 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1823 <        AddAction r = new AddAction();
1824 <        CompletableFuture<Void> g = f.thenAcceptBoth(f2, r);
1825 <        f.completeExceptionally(new CFException());
1826 <        f2.complete(two);
1827 <        checkCompletedWithWrappedCFException(g);
1828 <
1829 <        r = new AddAction();
1830 <        f = new CompletableFuture<Integer>();
1831 <        f.complete(one);
1832 <        f2 = new CompletableFuture<Integer>();
1833 <        g = f.thenAcceptBoth(f2, r);
1834 <        f2.completeExceptionally(new CFException());
1835 <        checkCompletedWithWrappedCFException(g);
1836 <    }
1820 >    public void testThenAcceptBoth_exceptionalCompletion() throws Throwable {
1821 >        for (ExecutionMode m : ExecutionMode.values())
1822 >        for (boolean fFirst : new boolean[] { true, false })
1823 >        for (boolean failFirst : new boolean[] { true, false })
1824 >        for (Integer v1 : new Integer[] { 1, null })
1825 >    {
1826 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1827 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
1828 >        final CFException ex = new CFException();
1829 >        final SubtractAction r1 = new SubtractAction(m);
1830 >        final SubtractAction r2 = new SubtractAction(m);
1831 >        final SubtractAction r3 = new SubtractAction(m);
1832 >
1833 >        final CompletableFuture<Integer> fst =  fFirst ? f : g;
1834 >        final CompletableFuture<Integer> snd = !fFirst ? f : g;
1835 >        final Callable<Boolean> complete1 = failFirst ?
1836 >            () -> fst.completeExceptionally(ex) :
1837 >            () -> fst.complete(v1);
1838 >        final Callable<Boolean> complete2 = failFirst ?
1839 >            () -> snd.complete(v1) :
1840 >            () -> snd.completeExceptionally(ex);
1841 >
1842 >        final CompletableFuture<Void> h1 = m.thenAcceptBoth(f, g, r1);
1843 >        assertTrue(complete1.call());
1844 >        final CompletableFuture<Void> h2 = m.thenAcceptBoth(f, g, r2);
1845 >        checkIncomplete(h1);
1846 >        checkIncomplete(h2);
1847 >        assertTrue(complete2.call());
1848 >        final CompletableFuture<Void> h3 = m.thenAcceptBoth(f, g, r3);
1849 >
1850 >        checkCompletedWithWrappedException(h1, ex);
1851 >        checkCompletedWithWrappedException(h2, ex);
1852 >        checkCompletedWithWrappedException(h3, ex);
1853 >        r1.assertNotInvoked();
1854 >        r2.assertNotInvoked();
1855 >        r3.assertNotInvoked();
1856 >        checkCompletedNormally(failFirst ? snd : fst, v1);
1857 >        checkCompletedExceptionally(failFirst ? fst : snd, ex);
1858 >    }}
1859  
1860      /**
1861 <     * thenAcceptBoth result completes exceptionally if action does
1861 >     * thenAcceptBoth result completes exceptionally if either source cancelled
1862       */
1863 <    public void testThenAcceptBoth3() {
1864 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1865 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1866 <        FailingBiConsumer r = new FailingBiConsumer();
1867 <        CompletableFuture<Void> g = f.thenAcceptBoth(f2, r);
1868 <        f.complete(one);
1869 <        checkIncomplete(g);
1870 <        f2.complete(two);
1871 <        checkCompletedWithWrappedCFException(g);
1872 <    }
1863 >    public void testThenAcceptBoth_sourceCancelled() throws Throwable {
1864 >        for (ExecutionMode m : ExecutionMode.values())
1865 >        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1866 >        for (boolean fFirst : new boolean[] { true, false })
1867 >        for (boolean failFirst : new boolean[] { true, false })
1868 >        for (Integer v1 : new Integer[] { 1, null })
1869 >    {
1870 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1871 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
1872 >        final SubtractAction r1 = new SubtractAction(m);
1873 >        final SubtractAction r2 = new SubtractAction(m);
1874 >        final SubtractAction r3 = new SubtractAction(m);
1875 >
1876 >        final CompletableFuture<Integer> fst =  fFirst ? f : g;
1877 >        final CompletableFuture<Integer> snd = !fFirst ? f : g;
1878 >        final Callable<Boolean> complete1 = failFirst ?
1879 >            () -> fst.cancel(mayInterruptIfRunning) :
1880 >            () -> fst.complete(v1);
1881 >        final Callable<Boolean> complete2 = failFirst ?
1882 >            () -> snd.complete(v1) :
1883 >            () -> snd.cancel(mayInterruptIfRunning);
1884 >
1885 >        final CompletableFuture<Void> h1 = m.thenAcceptBoth(f, g, r1);
1886 >        assertTrue(complete1.call());
1887 >        final CompletableFuture<Void> h2 = m.thenAcceptBoth(f, g, r2);
1888 >        checkIncomplete(h1);
1889 >        checkIncomplete(h2);
1890 >        assertTrue(complete2.call());
1891 >        final CompletableFuture<Void> h3 = m.thenAcceptBoth(f, g, r3);
1892 >
1893 >        checkCompletedWithWrappedCancellationException(h1);
1894 >        checkCompletedWithWrappedCancellationException(h2);
1895 >        checkCompletedWithWrappedCancellationException(h3);
1896 >        r1.assertNotInvoked();
1897 >        r2.assertNotInvoked();
1898 >        r3.assertNotInvoked();
1899 >        checkCompletedNormally(failFirst ? snd : fst, v1);
1900 >        checkCancelled(failFirst ? fst : snd);
1901 >    }}
1902  
1903      /**
1904 <     * thenAcceptBoth result completes exceptionally if either source cancelled
1904 >     * thenAcceptBoth result completes exceptionally if action does
1905       */
1906 <    public void testThenAcceptBoth4() {
1907 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1908 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1909 <        AddAction r = new AddAction();
1910 <        CompletableFuture<Void> g = f.thenAcceptBoth(f2, r);
1911 <        assertTrue(f.cancel(true));
1912 <        f2.complete(two);
1913 <        checkCompletedWithWrappedCancellationException(g);
1914 <        f = new CompletableFuture<Integer>();
1915 <        f2 = new CompletableFuture<Integer>();
1916 <        r = new AddAction();
1917 <        g = f.thenAcceptBoth(f2, r);
1918 <        f.complete(one);
1919 <        assertTrue(f2.cancel(true));
1920 <        checkCompletedWithWrappedCancellationException(g);
1921 <    }
1906 >    public void testThenAcceptBoth_actionFailed() {
1907 >        for (ExecutionMode m : ExecutionMode.values())
1908 >        for (boolean fFirst : new boolean[] { true, false })
1909 >        for (Integer v1 : new Integer[] { 1, null })
1910 >        for (Integer v2 : new Integer[] { 2, null })
1911 >    {
1912 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1913 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
1914 >        final FailingBiConsumer r1 = new FailingBiConsumer(m);
1915 >        final FailingBiConsumer r2 = new FailingBiConsumer(m);
1916 >        final FailingBiConsumer r3 = new FailingBiConsumer(m);
1917 >
1918 >        final CompletableFuture<Integer> fst =  fFirst ? f : g;
1919 >        final CompletableFuture<Integer> snd = !fFirst ? f : g;
1920 >        final Integer w1 =  fFirst ? v1 : v2;
1921 >        final Integer w2 = !fFirst ? v1 : v2;
1922 >
1923 >        final CompletableFuture<Void> h1 = m.thenAcceptBoth(f, g, r1);
1924 >        assertTrue(fst.complete(w1));
1925 >        final CompletableFuture<Void> h2 = m.thenAcceptBoth(f, g, r2);
1926 >        assertTrue(snd.complete(w2));
1927 >        final CompletableFuture<Void> h3 = m.thenAcceptBoth(f, g, r3);
1928 >
1929 >        checkCompletedWithWrappedCFException(h1);
1930 >        checkCompletedWithWrappedCFException(h2);
1931 >        checkCompletedWithWrappedCFException(h3);
1932 >        r1.assertInvoked();
1933 >        r2.assertInvoked();
1934 >        r3.assertInvoked();
1935 >        checkCompletedNormally(f, v1);
1936 >        checkCompletedNormally(g, v2);
1937 >    }}
1938  
1939      /**
1940       * runAfterBoth result completes normally after normal
1941       * completion of sources
1942       */
1943 <    public void testRunAfterBoth() {
1944 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1945 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1946 <        Noop r = new Noop();
1947 <        CompletableFuture<Void> g = f.runAfterBoth(f2, r);
1948 <        f.complete(one);
1949 <        checkIncomplete(g);
1950 <        f2.complete(two);
1951 <        checkCompletedNormally(g, null);
1952 <        assertTrue(r.ran);
1953 <
1954 <        r = new Noop();
1955 <        f = new CompletableFuture<Integer>();
1956 <        f.complete(one);
1957 <        f2 = new CompletableFuture<Integer>();
1958 <        g = f.runAfterBoth(f2, r);
1959 <        checkIncomplete(g);
1960 <        f2.complete(two);
1961 <        checkCompletedNormally(g, null);
1962 <        assertTrue(r.ran);
1963 <    }
1943 >    public void testRunAfterBoth_normalCompletion() {
1944 >        for (ExecutionMode m : ExecutionMode.values())
1945 >        for (boolean fFirst : new boolean[] { true, false })
1946 >        for (Integer v1 : new Integer[] { 1, null })
1947 >        for (Integer v2 : new Integer[] { 2, null })
1948 >    {
1949 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1950 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
1951 >        final Noop r1 = new Noop(m);
1952 >        final Noop r2 = new Noop(m);
1953 >        final Noop r3 = new Noop(m);
1954 >
1955 >        final CompletableFuture<Integer> fst =  fFirst ? f : g;
1956 >        final CompletableFuture<Integer> snd = !fFirst ? f : g;
1957 >        final Integer w1 =  fFirst ? v1 : v2;
1958 >        final Integer w2 = !fFirst ? v1 : v2;
1959 >
1960 >        final CompletableFuture<Void> h1 = m.runAfterBoth(f, g, r1);
1961 >        assertTrue(fst.complete(w1));
1962 >        final CompletableFuture<Void> h2 = m.runAfterBoth(f, g, r2);
1963 >        checkIncomplete(h1);
1964 >        checkIncomplete(h2);
1965 >        r1.assertNotInvoked();
1966 >        r2.assertNotInvoked();
1967 >        assertTrue(snd.complete(w2));
1968 >        final CompletableFuture<Void> h3 = m.runAfterBoth(f, g, r3);
1969 >
1970 >        checkCompletedNormally(h1, null);
1971 >        checkCompletedNormally(h2, null);
1972 >        checkCompletedNormally(h3, null);
1973 >        r1.assertInvoked();
1974 >        r2.assertInvoked();
1975 >        r3.assertInvoked();
1976 >        checkCompletedNormally(f, v1);
1977 >        checkCompletedNormally(g, v2);
1978 >    }}
1979  
1980      /**
1981       * runAfterBoth result completes exceptionally after exceptional
1982       * completion of either source
1983       */
1984 <    public void testRunAfterBoth2() {
1985 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1986 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1987 <        Noop r = new Noop();
1988 <        CompletableFuture<Void> g = f.runAfterBoth(f2, r);
1989 <        f.completeExceptionally(new CFException());
1990 <        f2.complete(two);
1991 <        checkCompletedWithWrappedCFException(g);
1992 <
1993 <        r = new Noop();
1994 <        f = new CompletableFuture<Integer>();
1995 <        f.complete(one);
1996 <        f2 = new CompletableFuture<Integer>();
1997 <        g = f.runAfterBoth(f2, r);
1998 <        f2.completeExceptionally(new CFException());
1999 <        checkCompletedWithWrappedCFException(g);
2000 <    }
1984 >    public void testRunAfterBoth_exceptionalCompletion() throws Throwable {
1985 >        for (ExecutionMode m : ExecutionMode.values())
1986 >        for (boolean fFirst : new boolean[] { true, false })
1987 >        for (boolean failFirst : new boolean[] { true, false })
1988 >        for (Integer v1 : new Integer[] { 1, null })
1989 >    {
1990 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1991 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
1992 >        final CFException ex = new CFException();
1993 >        final Noop r1 = new Noop(m);
1994 >        final Noop r2 = new Noop(m);
1995 >        final Noop r3 = new Noop(m);
1996 >
1997 >        final CompletableFuture<Integer> fst =  fFirst ? f : g;
1998 >        final CompletableFuture<Integer> snd = !fFirst ? f : g;
1999 >        final Callable<Boolean> complete1 = failFirst ?
2000 >            () -> fst.completeExceptionally(ex) :
2001 >            () -> fst.complete(v1);
2002 >        final Callable<Boolean> complete2 = failFirst ?
2003 >            () -> snd.complete(v1) :
2004 >            () -> snd.completeExceptionally(ex);
2005 >
2006 >        final CompletableFuture<Void> h1 = m.runAfterBoth(f, g, r1);
2007 >        assertTrue(complete1.call());
2008 >        final CompletableFuture<Void> h2 = m.runAfterBoth(f, g, r2);
2009 >        checkIncomplete(h1);
2010 >        checkIncomplete(h2);
2011 >        assertTrue(complete2.call());
2012 >        final CompletableFuture<Void> h3 = m.runAfterBoth(f, g, r3);
2013 >
2014 >        checkCompletedWithWrappedException(h1, ex);
2015 >        checkCompletedWithWrappedException(h2, ex);
2016 >        checkCompletedWithWrappedException(h3, ex);
2017 >        r1.assertNotInvoked();
2018 >        r2.assertNotInvoked();
2019 >        r3.assertNotInvoked();
2020 >        checkCompletedNormally(failFirst ? snd : fst, v1);
2021 >        checkCompletedExceptionally(failFirst ? fst : snd, ex);
2022 >    }}
2023  
2024      /**
2025 <     * runAfterBoth result completes exceptionally if action does
2025 >     * runAfterBoth result completes exceptionally if either source cancelled
2026       */
2027 <    public void testRunAfterBoth3() {
2028 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
2029 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
2030 <        FailingNoop r = new FailingNoop();
2031 <        CompletableFuture<Void> g = f.runAfterBoth(f2, r);
2032 <        f.complete(one);
2033 <        checkIncomplete(g);
2034 <        f2.complete(two);
2035 <        checkCompletedWithWrappedCFException(g);
2036 <    }
2027 >    public void testRunAfterBoth_sourceCancelled() throws Throwable {
2028 >        for (ExecutionMode m : ExecutionMode.values())
2029 >        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2030 >        for (boolean fFirst : new boolean[] { true, false })
2031 >        for (boolean failFirst : new boolean[] { true, false })
2032 >        for (Integer v1 : new Integer[] { 1, null })
2033 >    {
2034 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
2035 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
2036 >        final Noop r1 = new Noop(m);
2037 >        final Noop r2 = new Noop(m);
2038 >        final Noop r3 = new Noop(m);
2039 >
2040 >        final CompletableFuture<Integer> fst =  fFirst ? f : g;
2041 >        final CompletableFuture<Integer> snd = !fFirst ? f : g;
2042 >        final Callable<Boolean> complete1 = failFirst ?
2043 >            () -> fst.cancel(mayInterruptIfRunning) :
2044 >            () -> fst.complete(v1);
2045 >        final Callable<Boolean> complete2 = failFirst ?
2046 >            () -> snd.complete(v1) :
2047 >            () -> snd.cancel(mayInterruptIfRunning);
2048 >
2049 >        final CompletableFuture<Void> h1 = m.runAfterBoth(f, g, r1);
2050 >        assertTrue(complete1.call());
2051 >        final CompletableFuture<Void> h2 = m.runAfterBoth(f, g, r2);
2052 >        checkIncomplete(h1);
2053 >        checkIncomplete(h2);
2054 >        assertTrue(complete2.call());
2055 >        final CompletableFuture<Void> h3 = m.runAfterBoth(f, g, r3);
2056 >
2057 >        checkCompletedWithWrappedCancellationException(h1);
2058 >        checkCompletedWithWrappedCancellationException(h2);
2059 >        checkCompletedWithWrappedCancellationException(h3);
2060 >        r1.assertNotInvoked();
2061 >        r2.assertNotInvoked();
2062 >        r3.assertNotInvoked();
2063 >        checkCompletedNormally(failFirst ? snd : fst, v1);
2064 >        checkCancelled(failFirst ? fst : snd);
2065 >    }}
2066  
2067      /**
2068 <     * runAfterBoth result completes exceptionally if either source cancelled
2068 >     * runAfterBoth result completes exceptionally if action does
2069       */
2070 <    public void testRunAfterBoth4() {
2071 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
2072 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
2073 <        Noop r = new Noop();
2074 <        CompletableFuture<Void> g = f.runAfterBoth(f2, r);
2075 <        assertTrue(f.cancel(true));
2076 <        f2.complete(two);
2077 <        checkCompletedWithWrappedCancellationException(g);
2078 <        f = new CompletableFuture<Integer>();
2079 <        f2 = new CompletableFuture<Integer>();
2080 <        r = new Noop();
2081 <        g = f.runAfterBoth(f2, r);
2082 <        f.complete(one);
2083 <        assertTrue(f2.cancel(true));
2084 <        checkCompletedWithWrappedCancellationException(g);
2085 <    }
2070 >    public void testRunAfterBoth_actionFailed() {
2071 >        for (ExecutionMode m : ExecutionMode.values())
2072 >        for (boolean fFirst : new boolean[] { true, false })
2073 >        for (Integer v1 : new Integer[] { 1, null })
2074 >        for (Integer v2 : new Integer[] { 2, null })
2075 >    {
2076 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
2077 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
2078 >        final FailingRunnable r1 = new FailingRunnable(m);
2079 >        final FailingRunnable r2 = new FailingRunnable(m);
2080 >        final FailingRunnable r3 = new FailingRunnable(m);
2081 >
2082 >        final CompletableFuture<Integer> fst =  fFirst ? f : g;
2083 >        final CompletableFuture<Integer> snd = !fFirst ? f : g;
2084 >        final Integer w1 =  fFirst ? v1 : v2;
2085 >        final Integer w2 = !fFirst ? v1 : v2;
2086 >
2087 >        final CompletableFuture<Void> h1 = m.runAfterBoth(f, g, r1);
2088 >        assertTrue(fst.complete(w1));
2089 >        final CompletableFuture<Void> h2 = m.runAfterBoth(f, g, r2);
2090 >        assertTrue(snd.complete(w2));
2091 >        final CompletableFuture<Void> h3 = m.runAfterBoth(f, g, r3);
2092 >
2093 >        checkCompletedWithWrappedCFException(h1);
2094 >        checkCompletedWithWrappedCFException(h2);
2095 >        checkCompletedWithWrappedCFException(h3);
2096 >        r1.assertInvoked();
2097 >        r2.assertInvoked();
2098 >        r3.assertInvoked();
2099 >        checkCompletedNormally(f, v1);
2100 >        checkCompletedNormally(g, v2);
2101 >    }}
2102  
2103      /**
2104       * applyToEither result completes normally after normal completion
2105       * of either source
2106       */
2107 <    public void testApplyToEither() {
2108 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
2109 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
2110 <        CompletableFuture<Integer> g = f.applyToEither(f2, inc);
2111 <        f.complete(one);
2112 <        checkCompletedNormally(g, two);
2113 <        f2.complete(one);
2114 <        checkCompletedNormally(g, two);
2115 <
2116 <        f = new CompletableFuture<Integer>();
2117 <        f.complete(one);
2118 <        f2 = new CompletableFuture<Integer>();
2119 <        g = f.applyToEither(f2, inc);
2120 <        checkCompletedNormally(g, two);
2121 <    }
2107 >    public void testApplyToEither_normalCompletion() {
2108 >        for (ExecutionMode m : ExecutionMode.values())
2109 >        for (Integer v1 : new Integer[] { 1, null })
2110 >        for (Integer v2 : new Integer[] { 2, null })
2111 >    {
2112 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
2113 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
2114 >        final IncFunction[] rs = new IncFunction[6];
2115 >        for (int i = 0; i < rs.length; i++) rs[i] = new IncFunction(m);
2116 >
2117 >        final CompletableFuture<Integer> h0 = m.applyToEither(f, g, rs[0]);
2118 >        final CompletableFuture<Integer> h1 = m.applyToEither(g, f, rs[1]);
2119 >        checkIncomplete(h0);
2120 >        checkIncomplete(h1);
2121 >        rs[0].assertNotInvoked();
2122 >        rs[1].assertNotInvoked();
2123 >        f.complete(v1);
2124 >        checkCompletedNormally(h0, inc(v1));
2125 >        checkCompletedNormally(h1, inc(v1));
2126 >        final CompletableFuture<Integer> h2 = m.applyToEither(f, g, rs[2]);
2127 >        final CompletableFuture<Integer> h3 = m.applyToEither(g, f, rs[3]);
2128 >        checkCompletedNormally(h2, inc(v1));
2129 >        checkCompletedNormally(h3, inc(v1));
2130 >        g.complete(v2);
2131 >
2132 >        // unspecified behavior - both source completions available
2133 >        final CompletableFuture<Integer> h4 = m.applyToEither(f, g, rs[4]);
2134 >        final CompletableFuture<Integer> h5 = m.applyToEither(g, f, rs[5]);
2135 >        rs[4].assertValue(h4.join());
2136 >        rs[5].assertValue(h5.join());
2137 >        assertTrue(Objects.equals(inc(v1), h4.join()) ||
2138 >                   Objects.equals(inc(v2), h4.join()));
2139 >        assertTrue(Objects.equals(inc(v1), h5.join()) ||
2140 >                   Objects.equals(inc(v2), h5.join()));
2141 >
2142 >        checkCompletedNormally(f, v1);
2143 >        checkCompletedNormally(g, v2);
2144 >        checkCompletedNormally(h0, inc(v1));
2145 >        checkCompletedNormally(h1, inc(v1));
2146 >        checkCompletedNormally(h2, inc(v1));
2147 >        checkCompletedNormally(h3, inc(v1));
2148 >        for (int i = 0; i < 4; i++) rs[i].assertValue(inc(v1));
2149 >    }}
2150  
2151      /**
2152       * applyToEither result completes exceptionally after exceptional
2153       * completion of either source
2154       */
2155 <    public void testApplyToEither2() {
2156 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
2157 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
2158 <        CompletableFuture<Integer> g = f.applyToEither(f2, inc);
2159 <        f.completeExceptionally(new CFException());
2160 <        f2.complete(one);
2161 <        checkCompletedWithWrappedCFException(g);
2155 >    public void testApplyToEither_exceptionalCompletion() {
2156 >        for (ExecutionMode m : ExecutionMode.values())
2157 >        for (Integer v1 : new Integer[] { 1, null })
2158 >    {
2159 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
2160 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
2161 >        final CFException ex = new CFException();
2162 >        final IncFunction[] rs = new IncFunction[6];
2163 >        for (int i = 0; i < rs.length; i++) rs[i] = new IncFunction(m);
2164 >
2165 >        final CompletableFuture<Integer> h0 = m.applyToEither(f, g, rs[0]);
2166 >        final CompletableFuture<Integer> h1 = m.applyToEither(g, f, rs[1]);
2167 >        checkIncomplete(h0);
2168 >        checkIncomplete(h1);
2169 >        rs[0].assertNotInvoked();
2170 >        rs[1].assertNotInvoked();
2171 >        f.completeExceptionally(ex);
2172 >        checkCompletedWithWrappedException(h0, ex);
2173 >        checkCompletedWithWrappedException(h1, ex);
2174 >        final CompletableFuture<Integer> h2 = m.applyToEither(f, g, rs[2]);
2175 >        final CompletableFuture<Integer> h3 = m.applyToEither(g, f, rs[3]);
2176 >        checkCompletedWithWrappedException(h2, ex);
2177 >        checkCompletedWithWrappedException(h3, ex);
2178 >        g.complete(v1);
2179 >
2180 >        // unspecified behavior - both source completions available
2181 >        final CompletableFuture<Integer> h4 = m.applyToEither(f, g, rs[4]);
2182 >        final CompletableFuture<Integer> h5 = m.applyToEither(g, f, rs[5]);
2183 >        try {
2184 >            assertEquals(inc(v1), h4.join());
2185 >            rs[4].assertValue(inc(v1));
2186 >        } catch (CompletionException ok) {
2187 >            checkCompletedWithWrappedException(h4, ex);
2188 >            rs[4].assertNotInvoked();
2189 >        }
2190 >        try {
2191 >            assertEquals(inc(v1), h5.join());
2192 >            rs[5].assertValue(inc(v1));
2193 >        } catch (CompletionException ok) {
2194 >            checkCompletedWithWrappedException(h5, ex);
2195 >            rs[5].assertNotInvoked();
2196 >        }
2197  
2198 <        f = new CompletableFuture<Integer>();
2199 <        f2 = new CompletableFuture<Integer>();
2200 <        f2.completeExceptionally(new CFException());
2201 <        g = f.applyToEither(f2, inc);
2202 <        checkCompletedWithWrappedCFException(g);
2203 <    }
2198 >        checkCompletedExceptionally(f, ex);
2199 >        checkCompletedNormally(g, v1);
2200 >        checkCompletedWithWrappedException(h0, ex);
2201 >        checkCompletedWithWrappedException(h1, ex);
2202 >        checkCompletedWithWrappedException(h2, ex);
2203 >        checkCompletedWithWrappedException(h3, ex);
2204 >        checkCompletedWithWrappedException(h4, ex);
2205 >        for (int i = 0; i < 4; i++) rs[i].assertNotInvoked();
2206 >    }}
2207 >
2208 >    public void testApplyToEither_exceptionalCompletion2() {
2209 >        for (ExecutionMode m : ExecutionMode.values())
2210 >        for (boolean fFirst : new boolean[] { true, false })
2211 >        for (Integer v1 : new Integer[] { 1, null })
2212 >    {
2213 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
2214 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
2215 >        final CFException ex = new CFException();
2216 >        final IncFunction[] rs = new IncFunction[6];
2217 >        for (int i = 0; i < rs.length; i++) rs[i] = new IncFunction(m);
2218 >
2219 >        final CompletableFuture<Integer> h0 = m.applyToEither(f, g, rs[0]);
2220 >        final CompletableFuture<Integer> h1 = m.applyToEither(g, f, rs[1]);
2221 >        assertTrue(fFirst ? f.complete(v1) : g.completeExceptionally(ex));
2222 >        assertTrue(!fFirst ? f.complete(v1) : g.completeExceptionally(ex));
2223 >        final CompletableFuture<Integer> h2 = m.applyToEither(f, g, rs[2]);
2224 >        final CompletableFuture<Integer> h3 = m.applyToEither(g, f, rs[3]);
2225  
2226 <    /**
2227 <     * applyToEither result completes exceptionally if action does
2228 <     */
2229 <    public void testApplyToEither3() {
2230 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
2231 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
2232 <        FailingFunction r = new FailingFunction();
2233 <        CompletableFuture<Integer> g = f.applyToEither(f2, r);
2234 <        f2.complete(two);
2235 <        checkCompletedWithWrappedCFException(g);
2236 <    }
2226 >        // unspecified behavior - both source completions available
2227 >        try {
2228 >            assertEquals(inc(v1), h0.join());
2229 >            rs[0].assertValue(inc(v1));
2230 >        } catch (CompletionException ok) {
2231 >            checkCompletedWithWrappedException(h0, ex);
2232 >            rs[0].assertNotInvoked();
2233 >        }
2234 >        try {
2235 >            assertEquals(inc(v1), h1.join());
2236 >            rs[1].assertValue(inc(v1));
2237 >        } catch (CompletionException ok) {
2238 >            checkCompletedWithWrappedException(h1, ex);
2239 >            rs[1].assertNotInvoked();
2240 >        }
2241 >        try {
2242 >            assertEquals(inc(v1), h2.join());
2243 >            rs[2].assertValue(inc(v1));
2244 >        } catch (CompletionException ok) {
2245 >            checkCompletedWithWrappedException(h2, ex);
2246 >            rs[2].assertNotInvoked();
2247 >        }
2248 >        try {
2249 >            assertEquals(inc(v1), h3.join());
2250 >            rs[3].assertValue(inc(v1));
2251 >        } catch (CompletionException ok) {
2252 >            checkCompletedWithWrappedException(h3, ex);
2253 >            rs[3].assertNotInvoked();
2254 >        }
2255  
2256 <    /**
2257 <     * applyToEither result completes exceptionally if either source cancelled
2258 <     */
967 <    public void testApplyToEither4() {
968 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
969 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
970 <        CompletableFuture<Integer> g = f.applyToEither(f2, inc);
971 <        assertTrue(f.cancel(true));
972 <        checkCompletedWithWrappedCancellationException(g);
973 <        f = new CompletableFuture<Integer>();
974 <        f2 = new CompletableFuture<Integer>();
975 <        assertTrue(f2.cancel(true));
976 <        checkCompletedWithWrappedCancellationException(g);
977 <    }
2256 >        checkCompletedNormally(f, v1);
2257 >        checkCompletedExceptionally(g, ex);
2258 >    }}
2259  
2260      /**
2261 <     * acceptEither result completes normally after normal completion
981 <     * of either source
2261 >     * applyToEither result completes exceptionally if either source cancelled
2262       */
2263 <    public void testAcceptEither() {
2264 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
2265 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
2266 <        IncAction r = new IncAction();
2267 <        CompletableFuture<Void> g = f.acceptEither(f2, r);
2268 <        f.complete(one);
2269 <        checkCompletedNormally(g, null);
2270 <        f2.complete(one);
2271 <        checkCompletedNormally(g, null);
2272 <        assertEquals(r.value, 2);
2273 <
2274 <        r = new IncAction();
2275 <        f = new CompletableFuture<Integer>();
2276 <        f.complete(one);
2277 <        f2 = new CompletableFuture<Integer>();
2278 <        g = f.acceptEither(f2, r);
2279 <        checkCompletedNormally(g, null);
2280 <        assertEquals(r.value, 2);
2281 <    }
2263 >    public void testApplyToEither_sourceCancelled() {
2264 >        for (ExecutionMode m : ExecutionMode.values())
2265 >        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2266 >        for (Integer v1 : new Integer[] { 1, null })
2267 >    {
2268 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
2269 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
2270 >        final IncFunction[] rs = new IncFunction[6];
2271 >        for (int i = 0; i < rs.length; i++) rs[i] = new IncFunction(m);
2272 >
2273 >        final CompletableFuture<Integer> h0 = m.applyToEither(f, g, rs[0]);
2274 >        final CompletableFuture<Integer> h1 = m.applyToEither(g, f, rs[1]);
2275 >        checkIncomplete(h0);
2276 >        checkIncomplete(h1);
2277 >        rs[0].assertNotInvoked();
2278 >        rs[1].assertNotInvoked();
2279 >        f.cancel(mayInterruptIfRunning);
2280 >        checkCompletedWithWrappedCancellationException(h0);
2281 >        checkCompletedWithWrappedCancellationException(h1);
2282 >        final CompletableFuture<Integer> h2 = m.applyToEither(f, g, rs[2]);
2283 >        final CompletableFuture<Integer> h3 = m.applyToEither(g, f, rs[3]);
2284 >        checkCompletedWithWrappedCancellationException(h2);
2285 >        checkCompletedWithWrappedCancellationException(h3);
2286 >        g.complete(v1);
2287 >
2288 >        // unspecified behavior - both source completions available
2289 >        final CompletableFuture<Integer> h4 = m.applyToEither(f, g, rs[4]);
2290 >        final CompletableFuture<Integer> h5 = m.applyToEither(g, f, rs[5]);
2291 >        try {
2292 >            assertEquals(inc(v1), h4.join());
2293 >            rs[4].assertValue(inc(v1));
2294 >        } catch (CompletionException ok) {
2295 >            checkCompletedWithWrappedCancellationException(h4);
2296 >            rs[4].assertNotInvoked();
2297 >        }
2298 >        try {
2299 >            assertEquals(inc(v1), h5.join());
2300 >            rs[5].assertValue(inc(v1));
2301 >        } catch (CompletionException ok) {
2302 >            checkCompletedWithWrappedCancellationException(h5);
2303 >            rs[5].assertNotInvoked();
2304 >        }
2305  
2306 <    /**
2307 <     * acceptEither result completes exceptionally after exceptional
2308 <     * completion of either source
2309 <     */
2310 <    public void testAcceptEither2() {
2311 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
2312 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
2313 <        IncAction r = new IncAction();
2314 <        CompletableFuture<Void> g = f.acceptEither(f2, r);
2315 <        f.completeExceptionally(new CFException());
2316 <        f2.complete(one);
2317 <        checkCompletedWithWrappedCFException(g);
2306 >        checkCancelled(f);
2307 >        checkCompletedNormally(g, v1);
2308 >        checkCompletedWithWrappedCancellationException(h0);
2309 >        checkCompletedWithWrappedCancellationException(h1);
2310 >        checkCompletedWithWrappedCancellationException(h2);
2311 >        checkCompletedWithWrappedCancellationException(h3);
2312 >        for (int i = 0; i < 4; i++) rs[i].assertNotInvoked();
2313 >    }}
2314 >
2315 >    public void testApplyToEither_sourceCancelled2() {
2316 >        for (ExecutionMode m : ExecutionMode.values())
2317 >        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2318 >        for (boolean fFirst : new boolean[] { true, false })
2319 >        for (Integer v1 : new Integer[] { 1, null })
2320 >    {
2321 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
2322 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
2323 >        final IncFunction[] rs = new IncFunction[6];
2324 >        for (int i = 0; i < rs.length; i++) rs[i] = new IncFunction(m);
2325 >
2326 >        final CompletableFuture<Integer> h0 = m.applyToEither(f, g, rs[0]);
2327 >        final CompletableFuture<Integer> h1 = m.applyToEither(g, f, rs[1]);
2328 >        assertTrue(fFirst ? f.complete(v1) : g.cancel(mayInterruptIfRunning));
2329 >        assertTrue(!fFirst ? f.complete(v1) : g.cancel(mayInterruptIfRunning));
2330 >        final CompletableFuture<Integer> h2 = m.applyToEither(f, g, rs[2]);
2331 >        final CompletableFuture<Integer> h3 = m.applyToEither(g, f, rs[3]);
2332  
2333 <        r = new IncAction();
2334 <        f = new CompletableFuture<Integer>();
2335 <        f2 = new CompletableFuture<Integer>();
2336 <        f2.completeExceptionally(new CFException());
2337 <        g = f.acceptEither(f2, r);
2338 <        checkCompletedWithWrappedCFException(g);
2339 <    }
2333 >        // unspecified behavior - both source completions available
2334 >        try {
2335 >            assertEquals(inc(v1), h0.join());
2336 >            rs[0].assertValue(inc(v1));
2337 >        } catch (CompletionException ok) {
2338 >            checkCompletedWithWrappedCancellationException(h0);
2339 >            rs[0].assertNotInvoked();
2340 >        }
2341 >        try {
2342 >            assertEquals(inc(v1), h1.join());
2343 >            rs[1].assertValue(inc(v1));
2344 >        } catch (CompletionException ok) {
2345 >            checkCompletedWithWrappedCancellationException(h1);
2346 >            rs[1].assertNotInvoked();
2347 >        }
2348 >        try {
2349 >            assertEquals(inc(v1), h2.join());
2350 >            rs[2].assertValue(inc(v1));
2351 >        } catch (CompletionException ok) {
2352 >            checkCompletedWithWrappedCancellationException(h2);
2353 >            rs[2].assertNotInvoked();
2354 >        }
2355 >        try {
2356 >            assertEquals(inc(v1), h3.join());
2357 >            rs[3].assertValue(inc(v1));
2358 >        } catch (CompletionException ok) {
2359 >            checkCompletedWithWrappedCancellationException(h3);
2360 >            rs[3].assertNotInvoked();
2361 >        }
2362  
2363 <    /**
2364 <     * acceptEither result completes exceptionally if action does
2365 <     */
1027 <    public void testAcceptEither3() {
1028 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1029 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1030 <        FailingConsumer r = new FailingConsumer();
1031 <        CompletableFuture<Void> g = f.acceptEither(f2, r);
1032 <        f2.complete(two);
1033 <        checkCompletedWithWrappedCFException(g);
1034 <    }
2363 >        checkCompletedNormally(f, v1);
2364 >        checkCancelled(g);
2365 >    }}
2366  
2367      /**
2368 <     * acceptEither result completes exceptionally if either source cancelled
2368 >     * applyToEither result completes exceptionally if action does
2369       */
2370 <    public void testAcceptEither4() {
2371 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
2372 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
2373 <        IncAction r = new IncAction();
2374 <        CompletableFuture<Void> g = f.acceptEither(f2, r);
2375 <        assertTrue(f.cancel(true));
2376 <        checkCompletedWithWrappedCancellationException(g);
2377 <        f = new CompletableFuture<Integer>();
2378 <        f2 = new CompletableFuture<Integer>();
2379 <        assertTrue(f2.cancel(true));
2380 <        checkCompletedWithWrappedCancellationException(g);
2381 <    }
2382 <
2370 >    public void testApplyToEither_actionFailed() {
2371 >        for (ExecutionMode m : ExecutionMode.values())
2372 >        for (Integer v1 : new Integer[] { 1, null })
2373 >        for (Integer v2 : new Integer[] { 2, null })
2374 >    {
2375 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
2376 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
2377 >        final FailingFunction[] rs = new FailingFunction[6];
2378 >        for (int i = 0; i < rs.length; i++) rs[i] = new FailingFunction(m);
2379 >
2380 >        final CompletableFuture<Integer> h0 = m.applyToEither(f, g, rs[0]);
2381 >        final CompletableFuture<Integer> h1 = m.applyToEither(g, f, rs[1]);
2382 >        f.complete(v1);
2383 >        final CompletableFuture<Integer> h2 = m.applyToEither(f, g, rs[2]);
2384 >        final CompletableFuture<Integer> h3 = m.applyToEither(g, f, rs[3]);
2385 >        checkCompletedWithWrappedCFException(h0);
2386 >        checkCompletedWithWrappedCFException(h1);
2387 >        checkCompletedWithWrappedCFException(h2);
2388 >        checkCompletedWithWrappedCFException(h3);
2389 >        for (int i = 0; i < 4; i++) rs[i].assertValue(v1);
2390 >
2391 >        g.complete(v2);
2392 >
2393 >        // unspecified behavior - both source completions available
2394 >        final CompletableFuture<Integer> h4 = m.applyToEither(f, g, rs[4]);
2395 >        final CompletableFuture<Integer> h5 = m.applyToEither(g, f, rs[5]);
2396 >
2397 >        checkCompletedWithWrappedCFException(h4);
2398 >        assertTrue(Objects.equals(v1, rs[4].value) ||
2399 >                   Objects.equals(v2, rs[4].value));
2400 >        checkCompletedWithWrappedCFException(h5);
2401 >        assertTrue(Objects.equals(v1, rs[5].value) ||
2402 >                   Objects.equals(v2, rs[5].value));
2403 >
2404 >        checkCompletedNormally(f, v1);
2405 >        checkCompletedNormally(g, v2);
2406 >    }}
2407  
2408      /**
2409 <     * runAfterEither result completes normally after normal completion
2409 >     * acceptEither result completes normally after normal completion
2410       * of either source
2411       */
2412 <    public void testRunAfterEither() {
2413 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
2414 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
2415 <        Noop r = new Noop();
2416 <        CompletableFuture<Void> g = f.runAfterEither(f2, r);
2417 <        f.complete(one);
2418 <        checkCompletedNormally(g, null);
2419 <        f2.complete(one);
2420 <        checkCompletedNormally(g, null);
2421 <        assertTrue(r.ran);
2422 <
2423 <        r = new Noop();
2424 <        f = new CompletableFuture<Integer>();
2425 <        f.complete(one);
2426 <        f2 = new CompletableFuture<Integer>();
2427 <        g = f.runAfterEither(f2, r);
2428 <        checkCompletedNormally(g, null);
2429 <        assertTrue(r.ran);
2430 <    }
2412 >    public void testAcceptEither_normalCompletion() {
2413 >        for (ExecutionMode m : ExecutionMode.values())
2414 >        for (Integer v1 : new Integer[] { 1, null })
2415 >        for (Integer v2 : new Integer[] { 2, null })
2416 >    {
2417 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
2418 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
2419 >        final NoopConsumer[] rs = new NoopConsumer[6];
2420 >        for (int i = 0; i < rs.length; i++) rs[i] = new NoopConsumer(m);
2421 >
2422 >        final CompletableFuture<Void> h0 = m.acceptEither(f, g, rs[0]);
2423 >        final CompletableFuture<Void> h1 = m.acceptEither(g, f, rs[1]);
2424 >        checkIncomplete(h0);
2425 >        checkIncomplete(h1);
2426 >        rs[0].assertNotInvoked();
2427 >        rs[1].assertNotInvoked();
2428 >        f.complete(v1);
2429 >        checkCompletedNormally(h0, null);
2430 >        checkCompletedNormally(h1, null);
2431 >        rs[0].assertValue(v1);
2432 >        rs[1].assertValue(v1);
2433 >        final CompletableFuture<Void> h2 = m.acceptEither(f, g, rs[2]);
2434 >        final CompletableFuture<Void> h3 = m.acceptEither(g, f, rs[3]);
2435 >        checkCompletedNormally(h2, null);
2436 >        checkCompletedNormally(h3, null);
2437 >        rs[2].assertValue(v1);
2438 >        rs[3].assertValue(v1);
2439 >        g.complete(v2);
2440 >
2441 >        // unspecified behavior - both source completions available
2442 >        final CompletableFuture<Void> h4 = m.acceptEither(f, g, rs[4]);
2443 >        final CompletableFuture<Void> h5 = m.acceptEither(g, f, rs[5]);
2444 >        checkCompletedNormally(h4, null);
2445 >        checkCompletedNormally(h5, null);
2446 >        assertTrue(Objects.equals(v1, rs[4].value) ||
2447 >                   Objects.equals(v2, rs[4].value));
2448 >        assertTrue(Objects.equals(v1, rs[5].value) ||
2449 >                   Objects.equals(v2, rs[5].value));
2450 >
2451 >        checkCompletedNormally(f, v1);
2452 >        checkCompletedNormally(g, v2);
2453 >        checkCompletedNormally(h0, null);
2454 >        checkCompletedNormally(h1, null);
2455 >        checkCompletedNormally(h2, null);
2456 >        checkCompletedNormally(h3, null);
2457 >        for (int i = 0; i < 4; i++) rs[i].assertValue(v1);
2458 >    }}
2459  
2460      /**
2461 <     * runAfterEither result completes exceptionally after exceptional
2461 >     * acceptEither result completes exceptionally after exceptional
2462       * completion of either source
2463       */
2464 <    public void testRunAfterEither2() {
2465 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
2466 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
2467 <        Noop r = new Noop();
2468 <        CompletableFuture<Void> g = f.runAfterEither(f2, r);
2469 <        f.completeExceptionally(new CFException());
2470 <        f2.complete(one);
2471 <        checkCompletedWithWrappedCFException(g);
2472 <
2473 <        r = new Noop();
2474 <        f = new CompletableFuture<Integer>();
2475 <        f2 = new CompletableFuture<Integer>();
2476 <        f2.completeExceptionally(new CFException());
2477 <        g = f.runAfterEither(f2, r);
2478 <        checkCompletedWithWrappedCFException(g);
2479 <    }
2480 <
2481 <    /**
2482 <     * runAfterEither result completes exceptionally if action does
2483 <     */
2484 <    public void testRunAfterEither3() {
2485 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
2486 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
2487 <        FailingNoop r = new FailingNoop();
2488 <        CompletableFuture<Void> g = f.runAfterEither(f2, r);
2489 <        f2.complete(two);
2490 <        checkCompletedWithWrappedCFException(g);
2491 <    }
2492 <
1110 <    /**
1111 <     * runAfterEither result completes exceptionally if either source cancelled
1112 <     */
1113 <    public void testRunAfterEither4() {
1114 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1115 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1116 <        Noop r = new Noop();
1117 <        CompletableFuture<Void> g = f.runAfterEither(f2, r);
1118 <        assertTrue(f.cancel(true));
1119 <        checkCompletedWithWrappedCancellationException(g);
1120 <        f = new CompletableFuture<Integer>();
1121 <        f2 = new CompletableFuture<Integer>();
1122 <        assertTrue(f2.cancel(true));
1123 <        checkCompletedWithWrappedCancellationException(g);
1124 <    }
1125 <
1126 <    /**
1127 <     * thenCompose result completes normally after normal completion of source
1128 <     */
1129 <    public void testThenCompose() {
1130 <        CompletableFuture<Integer> f, g;
1131 <        CompletableFutureInc r;
1132 <
1133 <        f = new CompletableFuture<Integer>();
1134 <        g = f.thenCompose(r = new CompletableFutureInc());
1135 <        f.complete(one);
1136 <        checkCompletedNormally(g, two);
1137 <        assertTrue(r.ran);
1138 <
1139 <        f = new CompletableFuture<Integer>();
1140 <        f.complete(one);
1141 <        g = f.thenCompose(r = new CompletableFutureInc());
1142 <        checkCompletedNormally(g, two);
1143 <        assertTrue(r.ran);
1144 <    }
1145 <
1146 <    /**
1147 <     * thenCompose result completes exceptionally after exceptional
1148 <     * completion of source
1149 <     */
1150 <    public void testThenCompose2() {
1151 <        CompletableFuture<Integer> f, g;
1152 <        CompletableFutureInc r;
1153 <
1154 <        f = new CompletableFuture<Integer>();
1155 <        g = f.thenCompose(r = new CompletableFutureInc());
1156 <        f.completeExceptionally(new CFException());
1157 <        checkCompletedWithWrappedCFException(g);
1158 <
1159 <        f = new CompletableFuture<Integer>();
1160 <        f.completeExceptionally(new CFException());
1161 <        g = f.thenCompose(r = new CompletableFutureInc());
1162 <        checkCompletedWithWrappedCFException(g);
1163 <    }
1164 <
1165 <    /**
1166 <     * thenCompose result completes exceptionally if action does
1167 <     */
1168 <    public void testThenCompose3() {
1169 <        CompletableFuture<Integer> f, g;
1170 <        FailingCompletableFutureFunction r;
1171 <
1172 <        f = new CompletableFuture<Integer>();
1173 <        g = f.thenCompose(r = new FailingCompletableFutureFunction());
1174 <        f.complete(one);
1175 <        checkCompletedWithWrappedCFException(g);
1176 <
1177 <        f = new CompletableFuture<Integer>();
1178 <        f.complete(one);
1179 <        g = f.thenCompose(r = new FailingCompletableFutureFunction());
1180 <        checkCompletedWithWrappedCFException(g);
1181 <    }
1182 <
1183 <    /**
1184 <     * thenCompose result completes exceptionally if source cancelled
1185 <     */
1186 <    public void testThenCompose4() {
1187 <        CompletableFuture<Integer> f, g;
1188 <        CompletableFutureInc r;
1189 <
1190 <        f = new CompletableFuture<Integer>();
1191 <        g = f.thenCompose(r = new CompletableFutureInc());
1192 <        assertTrue(f.cancel(true));
1193 <        checkCompletedWithWrappedCancellationException(g);
1194 <
1195 <        f = new CompletableFuture<Integer>();
1196 <        assertTrue(f.cancel(true));
1197 <        g = f.thenCompose(r = new CompletableFutureInc());
1198 <        checkCompletedWithWrappedCancellationException(g);
1199 <    }
1200 <
1201 <
1202 <    // asyncs
1203 <
1204 <    /**
1205 <     * thenRunAsync result completes normally after normal completion of source
1206 <     */
1207 <    public void testThenRunAsync() {
1208 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1209 <        Noop r = new Noop();
1210 <        CompletableFuture<Void> g = f.thenRunAsync(r);
1211 <        f.complete(null);
1212 <        checkCompletedNormally(g, null);
1213 <
1214 <        // reordered version
1215 <        f = new CompletableFuture<Integer>();
1216 <        f.complete(null);
1217 <        r = new Noop();
1218 <        g = f.thenRunAsync(r);
1219 <        checkCompletedNormally(g, null);
1220 <    }
1221 <
1222 <    /**
1223 <     * thenRunAsync result completes exceptionally after exceptional
1224 <     * completion of source
1225 <     */
1226 <    public void testThenRunAsync2() {
1227 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1228 <        Noop r = new Noop();
1229 <        CompletableFuture<Void> g = f.thenRunAsync(r);
1230 <        f.completeExceptionally(new CFException());
2464 >    public void testAcceptEither_exceptionalCompletion() {
2465 >        for (ExecutionMode m : ExecutionMode.values())
2466 >        for (Integer v1 : new Integer[] { 1, null })
2467 >    {
2468 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
2469 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
2470 >        final CFException ex = new CFException();
2471 >        final NoopConsumer[] rs = new NoopConsumer[6];
2472 >        for (int i = 0; i < rs.length; i++) rs[i] = new NoopConsumer(m);
2473 >
2474 >        final CompletableFuture<Void> h0 = m.acceptEither(f, g, rs[0]);
2475 >        final CompletableFuture<Void> h1 = m.acceptEither(g, f, rs[1]);
2476 >        checkIncomplete(h0);
2477 >        checkIncomplete(h1);
2478 >        rs[0].assertNotInvoked();
2479 >        rs[1].assertNotInvoked();
2480 >        f.completeExceptionally(ex);
2481 >        checkCompletedWithWrappedException(h0, ex);
2482 >        checkCompletedWithWrappedException(h1, ex);
2483 >        final CompletableFuture<Void> h2 = m.acceptEither(f, g, rs[2]);
2484 >        final CompletableFuture<Void> h3 = m.acceptEither(g, f, rs[3]);
2485 >        checkCompletedWithWrappedException(h2, ex);
2486 >        checkCompletedWithWrappedException(h3, ex);
2487 >
2488 >        g.complete(v1);
2489 >
2490 >        // unspecified behavior - both source completions available
2491 >        final CompletableFuture<Void> h4 = m.acceptEither(f, g, rs[4]);
2492 >        final CompletableFuture<Void> h5 = m.acceptEither(g, f, rs[5]);
2493          try {
2494 <            g.join();
2495 <            shouldThrow();
2496 <        } catch (Exception ok) {
2494 >            assertNull(h4.join());
2495 >            rs[4].assertValue(v1);
2496 >        } catch (CompletionException ok) {
2497 >            checkCompletedWithWrappedException(h4, ex);
2498 >            rs[4].assertNotInvoked();
2499          }
1236        checkCompletedWithWrappedCFException(g);
1237    }
1238
1239    /**
1240     * thenRunAsync result completes exceptionally if action does
1241     */
1242    public void testThenRunAsync3() {
1243        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1244        FailingNoop r = new FailingNoop();
1245        CompletableFuture<Void> g = f.thenRunAsync(r);
1246        f.complete(null);
1247        checkCompletedWithWrappedCFException(g);
1248    }
1249
1250    /**
1251     * thenRunAsync result completes exceptionally if source cancelled
1252     */
1253    public void testThenRunAsync4() {
1254        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1255        Noop r = new Noop();
1256        CompletableFuture<Void> g = f.thenRunAsync(r);
1257        assertTrue(f.cancel(true));
1258        checkCompletedWithWrappedCancellationException(g);
1259    }
1260
1261    /**
1262     * thenApplyAsync result completes normally after normal completion of source
1263     */
1264    public void testThenApplyAsync() {
1265        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1266        CompletableFuture<Integer> g = f.thenApplyAsync(inc);
1267        f.complete(one);
1268        checkCompletedNormally(g, two);
1269    }
1270
1271    /**
1272     * thenApplyAsync result completes exceptionally after exceptional
1273     * completion of source
1274     */
1275    public void testThenApplyAsync2() {
1276        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1277        CompletableFuture<Integer> g = f.thenApplyAsync(inc);
1278        f.completeExceptionally(new CFException());
1279        checkCompletedWithWrappedCFException(g);
1280    }
1281
1282    /**
1283     * thenApplyAsync result completes exceptionally if action does
1284     */
1285    public void testThenApplyAsync3() {
1286        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1287        FailingFunction r = new FailingFunction();
1288        CompletableFuture<Integer> g = f.thenApplyAsync(r);
1289        f.complete(null);
1290        checkCompletedWithWrappedCFException(g);
1291    }
1292
1293    /**
1294     * thenApplyAsync result completes exceptionally if source cancelled
1295     */
1296    public void testThenApplyAsync4() {
1297        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1298        CompletableFuture<Integer> g = f.thenApplyAsync(inc);
1299        assertTrue(f.cancel(true));
1300        checkCompletedWithWrappedCancellationException(g);
1301    }
1302
1303    /**
1304     * thenAcceptAsync result completes normally after normal
1305     * completion of source
1306     */
1307    public void testThenAcceptAsync() {
1308        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1309        IncAction r = new IncAction();
1310        CompletableFuture<Void> g = f.thenAcceptAsync(r);
1311        f.complete(one);
1312        checkCompletedNormally(g, null);
1313        assertEquals(r.value, 2);
1314    }
1315
1316    /**
1317     * thenAcceptAsync result completes exceptionally after exceptional
1318     * completion of source
1319     */
1320    public void testThenAcceptAsync2() {
1321        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1322        IncAction r = new IncAction();
1323        CompletableFuture<Void> g = f.thenAcceptAsync(r);
1324        f.completeExceptionally(new CFException());
1325        checkCompletedWithWrappedCFException(g);
1326    }
1327
1328    /**
1329     * thenAcceptAsync result completes exceptionally if action does
1330     */
1331    public void testThenAcceptAsync3() {
1332        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1333        FailingConsumer r = new FailingConsumer();
1334        CompletableFuture<Void> g = f.thenAcceptAsync(r);
1335        f.complete(null);
1336        checkCompletedWithWrappedCFException(g);
1337    }
1338
1339    /**
1340     * thenAcceptAsync result completes exceptionally if source cancelled
1341     */
1342    public void testThenAcceptAsync4() {
1343        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1344        IncAction r = new IncAction();
1345        CompletableFuture<Void> g = f.thenAcceptAsync(r);
1346        assertTrue(f.cancel(true));
1347        checkCompletedWithWrappedCancellationException(g);
1348    }
1349
1350    /**
1351     * thenCombineAsync result completes normally after normal
1352     * completion of sources
1353     */
1354    public void testThenCombineAsync() {
1355        CompletableFuture<Integer> f, g, h;
1356
1357        f = new CompletableFuture<Integer>();
1358        g = new CompletableFuture<Integer>();
1359        h = f.thenCombineAsync(g, subtract);
1360        f.complete(3);
1361        checkIncomplete(h);
1362        g.complete(1);
1363        checkCompletedNormally(h, 2);
1364
1365        f = new CompletableFuture<Integer>();
1366        g = new CompletableFuture<Integer>();
1367        h = f.thenCombineAsync(g, subtract);
1368        g.complete(1);
1369        checkIncomplete(h);
1370        f.complete(3);
1371        checkCompletedNormally(h, 2);
1372
1373        f = new CompletableFuture<Integer>();
1374        g = new CompletableFuture<Integer>();
1375        g.complete(1);
1376        f.complete(3);
1377        h = f.thenCombineAsync(g, subtract);
1378        checkCompletedNormally(h, 2);
1379    }
1380
1381    /**
1382     * thenCombineAsync result completes exceptionally after exceptional
1383     * completion of either source
1384     */
1385    public void testThenCombineAsync2() {
1386        CompletableFuture<Integer> f, g, h;
1387
1388        f = new CompletableFuture<Integer>();
1389        g = new CompletableFuture<Integer>();
1390        h = f.thenCombineAsync(g, subtract);
1391        f.completeExceptionally(new CFException());
1392        checkIncomplete(h);
1393        g.complete(1);
1394        checkCompletedWithWrappedCFException(h);
1395
1396        f = new CompletableFuture<Integer>();
1397        g = new CompletableFuture<Integer>();
1398        h = f.thenCombineAsync(g, subtract);
1399        g.completeExceptionally(new CFException());
1400        checkIncomplete(h);
1401        f.complete(3);
1402        checkCompletedWithWrappedCFException(h);
1403
1404        f = new CompletableFuture<Integer>();
1405        g = new CompletableFuture<Integer>();
1406        g.completeExceptionally(new CFException());
1407        f.complete(3);
1408        h = f.thenCombineAsync(g, subtract);
1409        checkCompletedWithWrappedCFException(h);
1410    }
1411
1412    /**
1413     * thenCombineAsync result completes exceptionally if action does
1414     */
1415    public void testThenCombineAsync3() {
1416        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1417        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1418        FailingBiFunction r = new FailingBiFunction();
1419        CompletableFuture<Integer> g = f.thenCombineAsync(f2, r);
1420        f.complete(one);
1421        checkIncomplete(g);
1422        assertFalse(r.ran);
1423        f2.complete(two);
1424        checkCompletedWithWrappedCFException(g);
1425        assertTrue(r.ran);
1426    }
1427
1428    /**
1429     * thenCombineAsync result completes exceptionally if either source cancelled
1430     */
1431    public void testThenCombineAsync4() {
1432        CompletableFuture<Integer> f, g, h;
1433
1434        f = new CompletableFuture<Integer>();
1435        g = new CompletableFuture<Integer>();
1436        h = f.thenCombineAsync(g, subtract);
1437        assertTrue(f.cancel(true));
1438        checkIncomplete(h);
1439        g.complete(1);
1440        checkCompletedWithWrappedCancellationException(h);
1441
1442        f = new CompletableFuture<Integer>();
1443        g = new CompletableFuture<Integer>();
1444        h = f.thenCombineAsync(g, subtract);
1445        assertTrue(g.cancel(true));
1446        checkIncomplete(h);
1447        f.complete(3);
1448        checkCompletedWithWrappedCancellationException(h);
1449
1450        f = new CompletableFuture<Integer>();
1451        g = new CompletableFuture<Integer>();
1452        g.complete(3);
1453        assertTrue(f.cancel(true));
1454        h = f.thenCombineAsync(g, subtract);
1455        checkCompletedWithWrappedCancellationException(h);
1456
1457        f = new CompletableFuture<Integer>();
1458        g = new CompletableFuture<Integer>();
1459        f.complete(3);
1460        assertTrue(g.cancel(true));
1461        h = f.thenCombineAsync(g, subtract);
1462        checkCompletedWithWrappedCancellationException(h);
1463    }
1464
1465    /**
1466     * thenAcceptBothAsync result completes normally after normal
1467     * completion of sources
1468     */
1469    public void testThenAcceptBothAsync() {
1470        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1471        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1472        AddAction r = new AddAction();
1473        CompletableFuture<Void> g = f.thenAcceptBothAsync(f2, r);
1474        f.complete(one);
1475        checkIncomplete(g);
1476        f2.complete(two);
1477        checkCompletedNormally(g, null);
1478        assertEquals(r.value, 3);
1479    }
1480
1481    /**
1482     * thenAcceptBothAsync result completes exceptionally after exceptional
1483     * completion of source
1484     */
1485    public void testThenAcceptBothAsync2() {
1486        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1487        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1488        AddAction r = new AddAction();
1489        CompletableFuture<Void> g = f.thenAcceptBothAsync(f2, r);
1490        f.completeExceptionally(new CFException());
1491        f2.complete(two);
1492        checkCompletedWithWrappedCFException(g);
1493
1494        r = new AddAction();
1495        f = new CompletableFuture<Integer>();
1496        f2 = new CompletableFuture<Integer>();
1497        g = f.thenAcceptBothAsync(f2, r);
1498        f.complete(one);
1499        f2.completeExceptionally(new CFException());
1500        checkCompletedWithWrappedCFException(g);
1501    }
1502
1503    /**
1504     * thenAcceptBothAsync result completes exceptionally if action does
1505     */
1506    public void testThenAcceptBothAsync3() {
1507        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1508        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1509        FailingBiConsumer r = new FailingBiConsumer();
1510        CompletableFuture<Void> g = f.thenAcceptBothAsync(f2, r);
1511        f.complete(one);
1512        checkIncomplete(g);
1513        f2.complete(two);
1514        checkCompletedWithWrappedCFException(g);
1515    }
1516
1517    /**
1518     * thenAcceptBothAsync result completes exceptionally if either source cancelled
1519     */
1520    public void testThenAcceptBothAsync4() {
1521        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1522        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1523        AddAction r = new AddAction();
1524        CompletableFuture<Void> g = f.thenAcceptBothAsync(f2, r);
1525        assertTrue(f.cancel(true));
1526        f2.complete(two);
1527        checkCompletedWithWrappedCancellationException(g);
1528
1529        r = new AddAction();
1530        f = new CompletableFuture<Integer>();
1531        f2 = new CompletableFuture<Integer>();
1532        g = f.thenAcceptBothAsync(f2, r);
1533        f.complete(one);
1534        assertTrue(f2.cancel(true));
1535        checkCompletedWithWrappedCancellationException(g);
1536    }
1537
1538    /**
1539     * runAfterBothAsync result completes normally after normal
1540     * completion of sources
1541     */
1542    public void testRunAfterBothAsync() {
1543        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1544        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1545        Noop r = new Noop();
1546        CompletableFuture<Void> g = f.runAfterBothAsync(f2, r);
1547        f.complete(one);
1548        checkIncomplete(g);
1549        f2.complete(two);
1550        checkCompletedNormally(g, null);
1551        assertTrue(r.ran);
1552    }
1553
1554    /**
1555     * runAfterBothAsync result completes exceptionally after exceptional
1556     * completion of source
1557     */
1558    public void testRunAfterBothAsync2() {
1559        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1560        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1561        Noop r = new Noop();
1562        CompletableFuture<Void> g = f.runAfterBothAsync(f2, r);
1563        f.completeExceptionally(new CFException());
1564        f2.complete(two);
1565        checkCompletedWithWrappedCFException(g);
1566
1567        r = new Noop();
1568        f = new CompletableFuture<Integer>();
1569        f2 = new CompletableFuture<Integer>();
1570        g = f.runAfterBothAsync(f2, r);
1571        f.complete(one);
1572        f2.completeExceptionally(new CFException());
1573        checkCompletedWithWrappedCFException(g);
1574    }
1575
1576    /**
1577     * runAfterBothAsync result completes exceptionally if action does
1578     */
1579    public void testRunAfterBothAsync3() {
1580        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1581        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1582        FailingNoop r = new FailingNoop();
1583        CompletableFuture<Void> g = f.runAfterBothAsync(f2, r);
1584        f.complete(one);
1585        checkIncomplete(g);
1586        f2.complete(two);
1587        checkCompletedWithWrappedCFException(g);
1588    }
1589
1590    /**
1591     * runAfterBothAsync result completes exceptionally if either source cancelled
1592     */
1593    public void testRunAfterBothAsync4() {
1594        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1595        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1596        Noop r = new Noop();
1597        CompletableFuture<Void> g = f.runAfterBothAsync(f2, r);
1598        assertTrue(f.cancel(true));
1599        f2.complete(two);
1600        checkCompletedWithWrappedCancellationException(g);
1601
1602        r = new Noop();
1603        f = new CompletableFuture<Integer>();
1604        f2 = new CompletableFuture<Integer>();
1605        g = f.runAfterBothAsync(f2, r);
1606        f.complete(one);
1607        assertTrue(f2.cancel(true));
1608        checkCompletedWithWrappedCancellationException(g);
1609    }
1610
1611    /**
1612     * applyToEitherAsync result completes normally after normal
1613     * completion of sources
1614     */
1615    public void testApplyToEitherAsync() {
1616        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1617        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1618        CompletableFuture<Integer> g = f.applyToEitherAsync(f2, inc);
1619        f.complete(one);
1620        checkCompletedNormally(g, two);
1621
1622        f = new CompletableFuture<Integer>();
1623        f.complete(one);
1624        f2 = new CompletableFuture<Integer>();
1625        g = f.applyToEitherAsync(f2, inc);
1626        checkCompletedNormally(g, two);
1627    }
1628
1629    /**
1630     * applyToEitherAsync result completes exceptionally after exceptional
1631     * completion of source
1632     */
1633    public void testApplyToEitherAsync2() {
1634        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1635        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1636        CompletableFuture<Integer> g = f.applyToEitherAsync(f2, inc);
1637        f.completeExceptionally(new CFException());
1638        checkCompletedWithWrappedCFException(g);
1639
1640        f = new CompletableFuture<Integer>();
1641        f2 = new CompletableFuture<Integer>();
1642        f2.completeExceptionally(new CFException());
1643        g = f.applyToEitherAsync(f2, inc);
1644        f.complete(one);
1645        checkCompletedWithWrappedCFException(g);
1646    }
1647
1648    /**
1649     * applyToEitherAsync result completes exceptionally if action does
1650     */
1651    public void testApplyToEitherAsync3() {
1652        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1653        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1654        FailingFunction r = new FailingFunction();
1655        CompletableFuture<Integer> g = f.applyToEitherAsync(f2, r);
1656        f.complete(one);
1657        checkCompletedWithWrappedCFException(g);
1658    }
1659
1660    /**
1661     * applyToEitherAsync result completes exceptionally if either source cancelled
1662     */
1663    public void testApplyToEitherAsync4() {
1664        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1665        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1666        CompletableFuture<Integer> g = f.applyToEitherAsync(f2, inc);
1667        assertTrue(f.cancel(true));
1668        checkCompletedWithWrappedCancellationException(g);
1669
1670        f = new CompletableFuture<Integer>();
1671        f2 = new CompletableFuture<Integer>();
1672        assertTrue(f2.cancel(true));
1673        g = f.applyToEitherAsync(f2, inc);
1674        checkCompletedWithWrappedCancellationException(g);
1675    }
1676
1677    /**
1678     * acceptEitherAsync result completes normally after normal
1679     * completion of sources
1680     */
1681    public void testAcceptEitherAsync() {
1682        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1683        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1684        IncAction r = new IncAction();
1685        CompletableFuture<Void> g = f.acceptEitherAsync(f2, r);
1686        f.complete(one);
1687        checkCompletedNormally(g, null);
1688        assertEquals(r.value, 2);
1689
1690        r = new IncAction();
1691        f = new CompletableFuture<Integer>();
1692        f.complete(one);
1693        f2 = new CompletableFuture<Integer>();
1694        g = f.acceptEitherAsync(f2, r);
1695        checkCompletedNormally(g, null);
1696        assertEquals(r.value, 2);
1697    }
1698
1699    /**
1700     * acceptEitherAsync result completes exceptionally after exceptional
1701     * completion of source
1702     */
1703    public void testAcceptEitherAsync2() {
1704        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1705        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1706        IncAction r = new IncAction();
1707        CompletableFuture<Void> g = f.acceptEitherAsync(f2, r);
1708        f.completeExceptionally(new CFException());
1709        checkCompletedWithWrappedCFException(g);
1710
1711        r = new IncAction();
1712        f = new CompletableFuture<Integer>();
1713        f2 = new CompletableFuture<Integer>();
1714        f2.completeExceptionally(new CFException());
1715        g = f.acceptEitherAsync(f2, r);
1716        f.complete(one);
1717        checkCompletedWithWrappedCFException(g);
1718    }
1719
1720    /**
1721     * acceptEitherAsync result completes exceptionally if action does
1722     */
1723    public void testAcceptEitherAsync3() {
1724        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1725        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1726        FailingConsumer r = new FailingConsumer();
1727        CompletableFuture<Void> g = f.acceptEitherAsync(f2, r);
1728        f.complete(one);
1729        checkCompletedWithWrappedCFException(g);
1730    }
1731
1732    /**
1733     * acceptEitherAsync result completes exceptionally if either
1734     * source cancelled
1735     */
1736    public void testAcceptEitherAsync4() {
1737        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1738        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1739        IncAction r = new IncAction();
1740        CompletableFuture<Void> g = f.acceptEitherAsync(f2, r);
1741        assertTrue(f.cancel(true));
1742        checkCompletedWithWrappedCancellationException(g);
1743
1744        r = new IncAction();
1745        f = new CompletableFuture<Integer>();
1746        f2 = new CompletableFuture<Integer>();
1747        assertTrue(f2.cancel(true));
1748        g = f.acceptEitherAsync(f2, r);
1749        checkCompletedWithWrappedCancellationException(g);
1750    }
1751
1752    /**
1753     * runAfterEitherAsync result completes normally after normal
1754     * completion of sources
1755     */
1756    public void testRunAfterEitherAsync() {
1757        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1758        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1759        Noop r = new Noop();
1760        CompletableFuture<Void> g = f.runAfterEitherAsync(f2, r);
1761        f.complete(one);
1762        checkCompletedNormally(g, null);
1763        assertTrue(r.ran);
1764
1765        r = new Noop();
1766        f = new CompletableFuture<Integer>();
1767        f.complete(one);
1768        f2 = new CompletableFuture<Integer>();
1769        g = f.runAfterEitherAsync(f2, r);
1770        checkCompletedNormally(g, null);
1771        assertTrue(r.ran);
1772    }
1773
1774    /**
1775     * runAfterEitherAsync result completes exceptionally after exceptional
1776     * completion of source
1777     */
1778    public void testRunAfterEitherAsync2() {
1779        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1780        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1781        Noop r = new Noop();
1782        CompletableFuture<Void> g = f.runAfterEitherAsync(f2, r);
1783        f.completeExceptionally(new CFException());
1784        checkCompletedWithWrappedCFException(g);
1785
1786        r = new Noop();
1787        f = new CompletableFuture<Integer>();
1788        f2 = new CompletableFuture<Integer>();
1789        f2.completeExceptionally(new CFException());
1790        g = f.runAfterEitherAsync(f2, r);
1791        f.complete(one);
1792        checkCompletedWithWrappedCFException(g);
1793    }
1794
1795    /**
1796     * runAfterEitherAsync result completes exceptionally if action does
1797     */
1798    public void testRunAfterEitherAsync3() {
1799        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1800        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1801        FailingNoop r = new FailingNoop();
1802        CompletableFuture<Void> g = f.runAfterEitherAsync(f2, r);
1803        f.complete(one);
1804        checkCompletedWithWrappedCFException(g);
1805    }
1806
1807    /**
1808     * runAfterEitherAsync result completes exceptionally if either
1809     * source cancelled
1810     */
1811    public void testRunAfterEitherAsync4() {
1812        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1813        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1814        Noop r = new Noop();
1815        CompletableFuture<Void> g = f.runAfterEitherAsync(f2, r);
1816        assertTrue(f.cancel(true));
1817        checkCompletedWithWrappedCancellationException(g);
1818
1819        r = new Noop();
1820        f = new CompletableFuture<Integer>();
1821        f2 = new CompletableFuture<Integer>();
1822        assertTrue(f2.cancel(true));
1823        g = f.runAfterEitherAsync(f2, r);
1824        checkCompletedWithWrappedCancellationException(g);
1825    }
1826
1827    /**
1828     * thenComposeAsync result completes normally after normal
1829     * completion of source
1830     */
1831    public void testThenComposeAsync() {
1832        CompletableFuture<Integer> f, g;
1833        CompletableFutureInc r;
1834
1835        f = new CompletableFuture<Integer>();
1836        g = f.thenComposeAsync(r = new CompletableFutureInc());
1837        f.complete(one);
1838        checkCompletedNormally(g, two);
1839
1840        f = new CompletableFuture<Integer>();
1841        f.complete(one);
1842        g = f.thenComposeAsync(r = new CompletableFutureInc());
1843        checkCompletedNormally(g, two);
1844    }
1845
1846    /**
1847     * thenComposeAsync result completes exceptionally after
1848     * exceptional completion of source
1849     */
1850    public void testThenComposeAsync2() {
1851        CompletableFuture<Integer> f, g;
1852        CompletableFutureInc r;
1853
1854        f = new CompletableFuture<Integer>();
1855        g = f.thenComposeAsync(r = new CompletableFutureInc());
1856        f.completeExceptionally(new CFException());
1857        checkCompletedWithWrappedCFException(g);
1858        assertFalse(r.ran);
1859
1860        f = new CompletableFuture<Integer>();
1861        f.completeExceptionally(new CFException());
1862        g = f.thenComposeAsync(r = new CompletableFutureInc());
1863        checkCompletedWithWrappedCFException(g);
1864        assertFalse(r.ran);
1865    }
1866
1867    /**
1868     * thenComposeAsync result completes exceptionally if action does
1869     */
1870    public void testThenComposeAsync3() {
1871        CompletableFuture<Integer> f, g;
1872        FailingCompletableFutureFunction r;
1873
1874        f = new CompletableFuture<Integer>();
1875        g = f.thenComposeAsync(r = new FailingCompletableFutureFunction());
1876        f.complete(one);
1877        checkCompletedWithWrappedCFException(g);
1878
1879        f = new CompletableFuture<Integer>();
1880        f.complete(one);
1881        g = f.thenComposeAsync(r = new FailingCompletableFutureFunction());
1882        checkCompletedWithWrappedCFException(g);
1883    }
1884
1885    /**
1886     * thenComposeAsync result completes exceptionally if source cancelled
1887     */
1888    public void testThenComposeAsync4() {
1889        CompletableFuture<Integer> f, g;
1890        CompletableFutureInc r;
1891
1892        f = new CompletableFuture<Integer>();
1893        g = f.thenComposeAsync(r = new CompletableFutureInc());
1894        assertTrue(f.cancel(true));
1895        checkCompletedWithWrappedCancellationException(g);
1896
1897        f = new CompletableFuture<Integer>();
1898        assertTrue(f.cancel(true));
1899        g = f.thenComposeAsync(r = new CompletableFutureInc());
1900        checkCompletedWithWrappedCancellationException(g);
1901    }
1902
1903
1904    // async with explicit executors
1905
1906    /**
1907     * thenRunAsync result completes normally after normal completion of source
1908     */
1909    public void testThenRunAsyncE() {
1910        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1911        Noop r = new Noop();
1912        CompletableFuture<Void> g = f.thenRunAsync(r, new ThreadExecutor());
1913        f.complete(null);
1914        checkCompletedNormally(g, null);
1915
1916        // reordered version
1917        f = new CompletableFuture<Integer>();
1918        f.complete(null);
1919        r = new Noop();
1920        g = f.thenRunAsync(r, new ThreadExecutor());
1921        checkCompletedNormally(g, null);
1922    }
1923
1924    /**
1925     * thenRunAsync result completes exceptionally after exceptional
1926     * completion of source
1927     */
1928    public void testThenRunAsync2E() {
1929        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1930        Noop r = new Noop();
1931        CompletableFuture<Void> g = f.thenRunAsync(r, new ThreadExecutor());
1932        f.completeExceptionally(new CFException());
2500          try {
2501 <            g.join();
2502 <            shouldThrow();
2503 <        } catch (Exception ok) {
2501 >            assertNull(h5.join());
2502 >            rs[5].assertValue(v1);
2503 >        } catch (CompletionException ok) {
2504 >            checkCompletedWithWrappedException(h5, ex);
2505 >            rs[5].assertNotInvoked();
2506          }
1938        checkCompletedWithWrappedCFException(g);
1939    }
1940
1941    /**
1942     * thenRunAsync result completes exceptionally if action does
1943     */
1944    public void testThenRunAsync3E() {
1945        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1946        FailingNoop r = new FailingNoop();
1947        CompletableFuture<Void> g = f.thenRunAsync(r, new ThreadExecutor());
1948        f.complete(null);
1949        checkCompletedWithWrappedCFException(g);
1950    }
1951
1952    /**
1953     * thenRunAsync result completes exceptionally if source cancelled
1954     */
1955    public void testThenRunAsync4E() {
1956        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1957        Noop r = new Noop();
1958        CompletableFuture<Void> g = f.thenRunAsync(r, new ThreadExecutor());
1959        assertTrue(f.cancel(true));
1960        checkCompletedWithWrappedCancellationException(g);
1961    }
1962
1963    /**
1964     * thenApplyAsync result completes normally after normal completion of source
1965     */
1966    public void testThenApplyAsyncE() {
1967        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1968        CompletableFuture<Integer> g = f.thenApplyAsync(inc, new ThreadExecutor());
1969        f.complete(one);
1970        checkCompletedNormally(g, two);
1971    }
2507  
2508 <    /**
2509 <     * thenApplyAsync result completes exceptionally after exceptional
2510 <     * completion of source
2511 <     */
2512 <    public void testThenApplyAsync2E() {
2513 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
2514 <        CompletableFuture<Integer> g = f.thenApplyAsync(inc, new ThreadExecutor());
2515 <        f.completeExceptionally(new CFException());
2516 <        checkCompletedWithWrappedCFException(g);
2517 <    }
2508 >        checkCompletedExceptionally(f, ex);
2509 >        checkCompletedNormally(g, v1);
2510 >        checkCompletedWithWrappedException(h0, ex);
2511 >        checkCompletedWithWrappedException(h1, ex);
2512 >        checkCompletedWithWrappedException(h2, ex);
2513 >        checkCompletedWithWrappedException(h3, ex);
2514 >        checkCompletedWithWrappedException(h4, ex);
2515 >        for (int i = 0; i < 4; i++) rs[i].assertNotInvoked();
2516 >    }}
2517 >
2518 >    public void testAcceptEither_exceptionalCompletion2() {
2519 >        for (ExecutionMode m : ExecutionMode.values())
2520 >        for (boolean fFirst : new boolean[] { true, false })
2521 >        for (Integer v1 : new Integer[] { 1, null })
2522 >    {
2523 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
2524 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
2525 >        final CFException ex = new CFException();
2526 >        final NoopConsumer[] rs = new NoopConsumer[6];
2527 >        for (int i = 0; i < rs.length; i++) rs[i] = new NoopConsumer(m);
2528 >
2529 >        final CompletableFuture<Void> h0 = m.acceptEither(f, g, rs[0]);
2530 >        final CompletableFuture<Void> h1 = m.acceptEither(g, f, rs[1]);
2531 >        assertTrue(fFirst ? f.complete(v1) : g.completeExceptionally(ex));
2532 >        assertTrue(!fFirst ? f.complete(v1) : g.completeExceptionally(ex));
2533 >        final CompletableFuture<Void> h2 = m.acceptEither(f, g, rs[2]);
2534 >        final CompletableFuture<Void> h3 = m.acceptEither(g, f, rs[3]);
2535  
2536 <    /**
2537 <     * thenApplyAsync result completes exceptionally if action does
2538 <     */
2539 <    public void testThenApplyAsync3E() {
2540 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
2541 <        FailingFunction r = new FailingFunction();
2542 <        CompletableFuture<Integer> g = f.thenApplyAsync(r, new ThreadExecutor());
2543 <        f.complete(null);
2544 <        checkCompletedWithWrappedCFException(g);
2545 <    }
2546 <
2547 <    /**
2548 <     * thenApplyAsync result completes exceptionally if source cancelled
2549 <     */
2550 <    public void testThenApplyAsync4E() {
2551 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
2552 <        CompletableFuture<Integer> g = f.thenApplyAsync(inc, new ThreadExecutor());
2553 <        assertTrue(f.cancel(true));
2554 <        checkCompletedWithWrappedCancellationException(g);
2555 <    }
2536 >        // unspecified behavior - both source completions available
2537 >        try {
2538 >            assertEquals(null, h0.join());
2539 >            rs[0].assertValue(v1);
2540 >        } catch (CompletionException ok) {
2541 >            checkCompletedWithWrappedException(h0, ex);
2542 >            rs[0].assertNotInvoked();
2543 >        }
2544 >        try {
2545 >            assertEquals(null, h1.join());
2546 >            rs[1].assertValue(v1);
2547 >        } catch (CompletionException ok) {
2548 >            checkCompletedWithWrappedException(h1, ex);
2549 >            rs[1].assertNotInvoked();
2550 >        }
2551 >        try {
2552 >            assertEquals(null, h2.join());
2553 >            rs[2].assertValue(v1);
2554 >        } catch (CompletionException ok) {
2555 >            checkCompletedWithWrappedException(h2, ex);
2556 >            rs[2].assertNotInvoked();
2557 >        }
2558 >        try {
2559 >            assertEquals(null, h3.join());
2560 >            rs[3].assertValue(v1);
2561 >        } catch (CompletionException ok) {
2562 >            checkCompletedWithWrappedException(h3, ex);
2563 >            rs[3].assertNotInvoked();
2564 >        }
2565  
2566 <    /**
2567 <     * thenAcceptAsync result completes normally after normal
2568 <     * completion of source
2008 <     */
2009 <    public void testThenAcceptAsyncE() {
2010 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
2011 <        IncAction r = new IncAction();
2012 <        CompletableFuture<Void> g = f.thenAcceptAsync(r, new ThreadExecutor());
2013 <        f.complete(one);
2014 <        checkCompletedNormally(g, null);
2015 <        assertEquals(r.value, 2);
2016 <    }
2566 >        checkCompletedNormally(f, v1);
2567 >        checkCompletedExceptionally(g, ex);
2568 >    }}
2569  
2570      /**
2571 <     * thenAcceptAsync result completes exceptionally after exceptional
2020 <     * completion of source
2571 >     * acceptEither result completes exceptionally if either source cancelled
2572       */
2573 <    public void testThenAcceptAsync2E() {
2574 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
2575 <        IncAction r = new IncAction();
2576 <        CompletableFuture<Void> g = f.thenAcceptAsync(r, new ThreadExecutor());
2577 <        f.completeExceptionally(new CFException());
2578 <        checkCompletedWithWrappedCFException(g);
2579 <    }
2573 >    public void testAcceptEither_sourceCancelled() {
2574 >        for (ExecutionMode m : ExecutionMode.values())
2575 >        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2576 >        for (Integer v1 : new Integer[] { 1, null })
2577 >    {
2578 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
2579 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
2580 >        final NoopConsumer[] rs = new NoopConsumer[6];
2581 >        for (int i = 0; i < rs.length; i++) rs[i] = new NoopConsumer(m);
2582 >
2583 >        final CompletableFuture<Void> h0 = m.acceptEither(f, g, rs[0]);
2584 >        final CompletableFuture<Void> h1 = m.acceptEither(g, f, rs[1]);
2585 >        checkIncomplete(h0);
2586 >        checkIncomplete(h1);
2587 >        rs[0].assertNotInvoked();
2588 >        rs[1].assertNotInvoked();
2589 >        f.cancel(mayInterruptIfRunning);
2590 >        checkCompletedWithWrappedCancellationException(h0);
2591 >        checkCompletedWithWrappedCancellationException(h1);
2592 >        final CompletableFuture<Void> h2 = m.acceptEither(f, g, rs[2]);
2593 >        final CompletableFuture<Void> h3 = m.acceptEither(g, f, rs[3]);
2594 >        checkCompletedWithWrappedCancellationException(h2);
2595 >        checkCompletedWithWrappedCancellationException(h3);
2596 >
2597 >        g.complete(v1);
2598 >
2599 >        // unspecified behavior - both source completions available
2600 >        final CompletableFuture<Void> h4 = m.acceptEither(f, g, rs[4]);
2601 >        final CompletableFuture<Void> h5 = m.acceptEither(g, f, rs[5]);
2602 >        try {
2603 >            assertNull(h4.join());
2604 >            rs[4].assertValue(v1);
2605 >        } catch (CompletionException ok) {
2606 >            checkCompletedWithWrappedCancellationException(h4);
2607 >            rs[4].assertNotInvoked();
2608 >        }
2609 >        try {
2610 >            assertNull(h5.join());
2611 >            rs[5].assertValue(v1);
2612 >        } catch (CompletionException ok) {
2613 >            checkCompletedWithWrappedCancellationException(h5);
2614 >            rs[5].assertNotInvoked();
2615 >        }
2616  
2617 <    /**
2618 <     * thenAcceptAsync result completes exceptionally if action does
2619 <     */
2620 <    public void testThenAcceptAsync3E() {
2621 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
2622 <        FailingConsumer r = new FailingConsumer();
2623 <        CompletableFuture<Void> g = f.thenAcceptAsync(r, new ThreadExecutor());
2624 <        f.complete(null);
2038 <        checkCompletedWithWrappedCFException(g);
2039 <    }
2617 >        checkCancelled(f);
2618 >        checkCompletedNormally(g, v1);
2619 >        checkCompletedWithWrappedCancellationException(h0);
2620 >        checkCompletedWithWrappedCancellationException(h1);
2621 >        checkCompletedWithWrappedCancellationException(h2);
2622 >        checkCompletedWithWrappedCancellationException(h3);
2623 >        for (int i = 0; i < 4; i++) rs[i].assertNotInvoked();
2624 >    }}
2625  
2626      /**
2627 <     * thenAcceptAsync result completes exceptionally if source cancelled
2627 >     * acceptEither result completes exceptionally if action does
2628       */
2629 <    public void testThenAcceptAsync4E() {
2630 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
2631 <        IncAction r = new IncAction();
2632 <        CompletableFuture<Void> g = f.thenAcceptAsync(r, new ThreadExecutor());
2633 <        assertTrue(f.cancel(true));
2634 <        checkCompletedWithWrappedCancellationException(g);
2635 <    }
2629 >    public void testAcceptEither_actionFailed() {
2630 >        for (ExecutionMode m : ExecutionMode.values())
2631 >        for (Integer v1 : new Integer[] { 1, null })
2632 >        for (Integer v2 : new Integer[] { 2, null })
2633 >    {
2634 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
2635 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
2636 >        final FailingConsumer[] rs = new FailingConsumer[6];
2637 >        for (int i = 0; i < rs.length; i++) rs[i] = new FailingConsumer(m);
2638 >
2639 >        final CompletableFuture<Void> h0 = m.acceptEither(f, g, rs[0]);
2640 >        final CompletableFuture<Void> h1 = m.acceptEither(g, f, rs[1]);
2641 >        f.complete(v1);
2642 >        final CompletableFuture<Void> h2 = m.acceptEither(f, g, rs[2]);
2643 >        final CompletableFuture<Void> h3 = m.acceptEither(g, f, rs[3]);
2644 >        checkCompletedWithWrappedCFException(h0);
2645 >        checkCompletedWithWrappedCFException(h1);
2646 >        checkCompletedWithWrappedCFException(h2);
2647 >        checkCompletedWithWrappedCFException(h3);
2648 >        for (int i = 0; i < 4; i++) rs[i].assertValue(v1);
2649 >
2650 >        g.complete(v2);
2651 >
2652 >        // unspecified behavior - both source completions available
2653 >        final CompletableFuture<Void> h4 = m.acceptEither(f, g, rs[4]);
2654 >        final CompletableFuture<Void> h5 = m.acceptEither(g, f, rs[5]);
2655 >
2656 >        checkCompletedWithWrappedCFException(h4);
2657 >        assertTrue(Objects.equals(v1, rs[4].value) ||
2658 >                   Objects.equals(v2, rs[4].value));
2659 >        checkCompletedWithWrappedCFException(h5);
2660 >        assertTrue(Objects.equals(v1, rs[5].value) ||
2661 >                   Objects.equals(v2, rs[5].value));
2662 >
2663 >        checkCompletedNormally(f, v1);
2664 >        checkCompletedNormally(g, v2);
2665 >    }}
2666  
2667      /**
2668 <     * thenCombineAsync result completes normally after normal
2669 <     * completion of sources
2668 >     * runAfterEither result completes normally after normal completion
2669 >     * of either source
2670       */
2671 <    public void testThenCombineAsyncE() {
2672 <        CompletableFuture<Integer> f, g, h;
2673 <        ThreadExecutor e = new ThreadExecutor();
2674 <        int count = 0;
2675 <
2676 <        f = new CompletableFuture<Integer>();
2677 <        g = new CompletableFuture<Integer>();
2678 <        h = f.thenCombineAsync(g, subtract, e);
2679 <        f.complete(3);
2680 <        checkIncomplete(h);
2681 <        g.complete(1);
2682 <        checkCompletedNormally(h, 2);
2683 <        assertEquals(++count, e.count.get());
2684 <
2685 <        f = new CompletableFuture<Integer>();
2686 <        g = new CompletableFuture<Integer>();
2687 <        h = f.thenCombineAsync(g, subtract, e);
2688 <        g.complete(1);
2689 <        checkIncomplete(h);
2690 <        f.complete(3);
2691 <        checkCompletedNormally(h, 2);
2692 <        assertEquals(++count, e.count.get());
2693 <
2694 <        f = new CompletableFuture<Integer>();
2695 <        g = new CompletableFuture<Integer>();
2696 <        g.complete(1);
2697 <        f.complete(3);
2698 <        h = f.thenCombineAsync(g, subtract, e);
2699 <        checkCompletedNormally(h, 2);
2700 <        assertEquals(++count, e.count.get());
2701 <    }
2671 >    public void testRunAfterEither_normalCompletion() {
2672 >        for (ExecutionMode m : ExecutionMode.values())
2673 >        for (Integer v1 : new Integer[] { 1, null })
2674 >        for (Integer v2 : new Integer[] { 2, null })
2675 >    {
2676 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
2677 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
2678 >        final Noop[] rs = new Noop[6];
2679 >        for (int i = 0; i < rs.length; i++) rs[i] = new Noop(m);
2680 >
2681 >        final CompletableFuture<Void> h0 = m.runAfterEither(f, g, rs[0]);
2682 >        final CompletableFuture<Void> h1 = m.runAfterEither(g, f, rs[1]);
2683 >        checkIncomplete(h0);
2684 >        checkIncomplete(h1);
2685 >        rs[0].assertNotInvoked();
2686 >        rs[1].assertNotInvoked();
2687 >        f.complete(v1);
2688 >        checkCompletedNormally(h0, null);
2689 >        checkCompletedNormally(h1, null);
2690 >        rs[0].assertInvoked();
2691 >        rs[1].assertInvoked();
2692 >        final CompletableFuture<Void> h2 = m.runAfterEither(f, g, rs[2]);
2693 >        final CompletableFuture<Void> h3 = m.runAfterEither(g, f, rs[3]);
2694 >        checkCompletedNormally(h2, null);
2695 >        checkCompletedNormally(h3, null);
2696 >        rs[2].assertInvoked();
2697 >        rs[3].assertInvoked();
2698 >
2699 >        g.complete(v2);
2700 >
2701 >        final CompletableFuture<Void> h4 = m.runAfterEither(f, g, rs[4]);
2702 >        final CompletableFuture<Void> h5 = m.runAfterEither(g, f, rs[5]);
2703 >
2704 >        checkCompletedNormally(f, v1);
2705 >        checkCompletedNormally(g, v2);
2706 >        checkCompletedNormally(h0, null);
2707 >        checkCompletedNormally(h1, null);
2708 >        checkCompletedNormally(h2, null);
2709 >        checkCompletedNormally(h3, null);
2710 >        checkCompletedNormally(h4, null);
2711 >        checkCompletedNormally(h5, null);
2712 >        for (int i = 0; i < 6; i++) rs[i].assertInvoked();
2713 >    }}
2714  
2715      /**
2716 <     * thenCombineAsync result completes exceptionally after exceptional
2716 >     * runAfterEither result completes exceptionally after exceptional
2717       * completion of either source
2718       */
2719 <    public void testThenCombineAsync2E() {
2720 <        CompletableFuture<Integer> f, g, h;
2721 <        ThreadExecutor e = new ThreadExecutor();
2722 <        int count = 0;
2723 <
2724 <        f = new CompletableFuture<Integer>();
2725 <        g = new CompletableFuture<Integer>();
2726 <        h = f.thenCombineAsync(g, subtract, e);
2727 <        f.completeExceptionally(new CFException());
2728 <        checkIncomplete(h);
2729 <        g.complete(1);
2730 <        checkCompletedWithWrappedCFException(h);
2731 <
2732 <        f = new CompletableFuture<Integer>();
2733 <        g = new CompletableFuture<Integer>();
2734 <        h = f.thenCombineAsync(g, subtract, e);
2735 <        g.completeExceptionally(new CFException());
2736 <        checkIncomplete(h);
2737 <        f.complete(3);
2738 <        checkCompletedWithWrappedCFException(h);
2739 <
2740 <        f = new CompletableFuture<Integer>();
2741 <        g = new CompletableFuture<Integer>();
2742 <        g.completeExceptionally(new CFException());
2743 <        h = f.thenCombineAsync(g, subtract, e);
2744 <        checkIncomplete(h);
2745 <        f.complete(3);
2746 <        checkCompletedWithWrappedCFException(h);
2747 <
2748 <        assertEquals(0, e.count.get());
2749 <    }
2750 <
2751 <    /**
2752 <     * thenCombineAsync result completes exceptionally if action does
2753 <     */
2754 <    public void testThenCombineAsync3E() {
2755 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
2756 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
2757 <        FailingBiFunction r = new FailingBiFunction();
2758 <        CompletableFuture<Integer> g = f.thenCombineAsync(f2, r, new ThreadExecutor());
2759 <        f.complete(one);
2760 <        checkIncomplete(g);
2761 <        assertFalse(r.ran);
2135 <        f2.complete(two);
2136 <        checkCompletedWithWrappedCFException(g);
2137 <        assertTrue(r.ran);
2138 <    }
2139 <
2140 <    /**
2141 <     * thenCombineAsync result completes exceptionally if either source cancelled
2142 <     */
2143 <    public void testThenCombineAsync4E() {
2144 <        CompletableFuture<Integer> f, g, h;
2145 <        ThreadExecutor e = new ThreadExecutor();
2146 <
2147 <        f = new CompletableFuture<Integer>();
2148 <        g = new CompletableFuture<Integer>();
2149 <        h = f.thenCombineAsync(g, subtract, e);
2150 <        assertTrue(f.cancel(true));
2151 <        checkIncomplete(h);
2152 <        g.complete(1);
2153 <        checkCompletedWithWrappedCancellationException(h);
2154 <
2155 <        f = new CompletableFuture<Integer>();
2156 <        g = new CompletableFuture<Integer>();
2157 <        h = f.thenCombineAsync(g, subtract, e);
2158 <        assertTrue(g.cancel(true));
2159 <        checkIncomplete(h);
2160 <        f.complete(3);
2161 <        checkCompletedWithWrappedCancellationException(h);
2162 <
2163 <        f = new CompletableFuture<Integer>();
2164 <        g = new CompletableFuture<Integer>();
2165 <        assertTrue(g.cancel(true));
2166 <        h = f.thenCombineAsync(g, subtract, e);
2167 <        checkIncomplete(h);
2168 <        f.complete(3);
2169 <        checkCompletedWithWrappedCancellationException(h);
2170 <
2171 <        f = new CompletableFuture<Integer>();
2172 <        g = new CompletableFuture<Integer>();
2173 <        assertTrue(f.cancel(true));
2174 <        assertTrue(g.cancel(true));
2175 <        h = f.thenCombineAsync(g, subtract, e);
2176 <        checkCompletedWithWrappedCancellationException(h);
2177 <
2178 <        assertEquals(0, e.count.get());
2179 <    }
2180 <
2181 <    /**
2182 <     * thenAcceptBothAsync result completes normally after normal
2183 <     * completion of sources
2184 <     */
2185 <    public void testThenAcceptBothAsyncE() {
2186 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
2187 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
2188 <        AddAction r = new AddAction();
2189 <        CompletableFuture<Void> g = f.thenAcceptBothAsync(f2, r, new ThreadExecutor());
2190 <        f.complete(one);
2191 <        checkIncomplete(g);
2192 <        f2.complete(two);
2193 <        checkCompletedNormally(g, null);
2194 <        assertEquals(r.value, 3);
2195 <    }
2196 <
2197 <    /**
2198 <     * thenAcceptBothAsync result completes exceptionally after exceptional
2199 <     * completion of source
2200 <     */
2201 <    public void testThenAcceptBothAsync2E() {
2202 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
2203 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
2204 <        AddAction r = new AddAction();
2205 <        CompletableFuture<Void> g = f.thenAcceptBothAsync(f2, r, new ThreadExecutor());
2206 <        f.completeExceptionally(new CFException());
2207 <        f2.complete(two);
2208 <        checkCompletedWithWrappedCFException(g);
2209 <
2210 <        r = new AddAction();
2211 <        f = new CompletableFuture<Integer>();
2212 <        f2 = new CompletableFuture<Integer>();
2213 <        g = f.thenAcceptBothAsync(f2, r, new ThreadExecutor());
2214 <        f.complete(one);
2215 <        f2.completeExceptionally(new CFException());
2216 <        checkCompletedWithWrappedCFException(g);
2217 <    }
2218 <
2219 <    /**
2220 <     * thenAcceptBothAsync result completes exceptionally if action does
2221 <     */
2222 <    public void testThenAcceptBothAsync3E() {
2223 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
2224 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
2225 <        FailingBiConsumer r = new FailingBiConsumer();
2226 <        CompletableFuture<Void> g = f.thenAcceptBothAsync(f2, r, new ThreadExecutor());
2227 <        f.complete(one);
2228 <        checkIncomplete(g);
2229 <        f2.complete(two);
2230 <        checkCompletedWithWrappedCFException(g);
2231 <    }
2232 <
2233 <    /**
2234 <     * thenAcceptBothAsync result completes exceptionally if either source cancelled
2235 <     */
2236 <    public void testThenAcceptBothAsync4E() {
2237 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
2238 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
2239 <        AddAction r = new AddAction();
2240 <        CompletableFuture<Void> g = f.thenAcceptBothAsync(f2, r, new ThreadExecutor());
2241 <        assertTrue(f.cancel(true));
2242 <        f2.complete(two);
2243 <        checkCompletedWithWrappedCancellationException(g);
2244 <
2245 <        r = new AddAction();
2246 <        f = new CompletableFuture<Integer>();
2247 <        f2 = new CompletableFuture<Integer>();
2248 <        g = f.thenAcceptBothAsync(f2, r, new ThreadExecutor());
2249 <        f.complete(one);
2250 <        assertTrue(f2.cancel(true));
2251 <        checkCompletedWithWrappedCancellationException(g);
2252 <    }
2253 <
2254 <    /**
2255 <     * runAfterBothAsync result completes normally after normal
2256 <     * completion of sources
2257 <     */
2258 <    public void testRunAfterBothAsyncE() {
2259 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
2260 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
2261 <        Noop r = new Noop();
2262 <        CompletableFuture<Void> g = f.runAfterBothAsync(f2, r, new ThreadExecutor());
2263 <        f.complete(one);
2264 <        checkIncomplete(g);
2265 <        f2.complete(two);
2266 <        checkCompletedNormally(g, null);
2267 <        assertTrue(r.ran);
2268 <    }
2269 <
2270 <    /**
2271 <     * runAfterBothAsync result completes exceptionally after exceptional
2272 <     * completion of source
2273 <     */
2274 <    public void testRunAfterBothAsync2E() {
2275 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
2276 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
2277 <        Noop r = new Noop();
2278 <        CompletableFuture<Void> g = f.runAfterBothAsync(f2, r, new ThreadExecutor());
2279 <        f.completeExceptionally(new CFException());
2280 <        f2.complete(two);
2281 <        checkCompletedWithWrappedCFException(g);
2282 <
2283 <        r = new Noop();
2284 <        f = new CompletableFuture<Integer>();
2285 <        f2 = new CompletableFuture<Integer>();
2286 <        g = f.runAfterBothAsync(f2, r, new ThreadExecutor());
2287 <        f.complete(one);
2288 <        f2.completeExceptionally(new CFException());
2289 <        checkCompletedWithWrappedCFException(g);
2290 <    }
2291 <
2292 <    /**
2293 <     * runAfterBothAsync result completes exceptionally if action does
2294 <     */
2295 <    public void testRunAfterBothAsync3E() {
2296 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
2297 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
2298 <        FailingNoop r = new FailingNoop();
2299 <        CompletableFuture<Void> g = f.runAfterBothAsync(f2, r, new ThreadExecutor());
2300 <        f.complete(one);
2301 <        checkIncomplete(g);
2302 <        f2.complete(two);
2303 <        checkCompletedWithWrappedCFException(g);
2304 <    }
2719 >    public void testRunAfterEither_exceptionalCompletion() {
2720 >        for (ExecutionMode m : ExecutionMode.values())
2721 >        for (Integer v1 : new Integer[] { 1, null })
2722 >    {
2723 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
2724 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
2725 >        final CFException ex = new CFException();
2726 >        final Noop[] rs = new Noop[6];
2727 >        for (int i = 0; i < rs.length; i++) rs[i] = new Noop(m);
2728 >
2729 >        final CompletableFuture<Void> h0 = m.runAfterEither(f, g, rs[0]);
2730 >        final CompletableFuture<Void> h1 = m.runAfterEither(g, f, rs[1]);
2731 >        checkIncomplete(h0);
2732 >        checkIncomplete(h1);
2733 >        rs[0].assertNotInvoked();
2734 >        rs[1].assertNotInvoked();
2735 >        assertTrue(f.completeExceptionally(ex));
2736 >        checkCompletedWithWrappedException(h0, ex);
2737 >        checkCompletedWithWrappedException(h1, ex);
2738 >        final CompletableFuture<Void> h2 = m.runAfterEither(f, g, rs[2]);
2739 >        final CompletableFuture<Void> h3 = m.runAfterEither(g, f, rs[3]);
2740 >        checkCompletedWithWrappedException(h2, ex);
2741 >        checkCompletedWithWrappedException(h3, ex);
2742 >
2743 >        assertTrue(g.complete(v1));
2744 >
2745 >        // unspecified behavior - both source completions available
2746 >        final CompletableFuture<Void> h4 = m.runAfterEither(f, g, rs[4]);
2747 >        final CompletableFuture<Void> h5 = m.runAfterEither(g, f, rs[5]);
2748 >        try {
2749 >            assertNull(h4.join());
2750 >            rs[4].assertInvoked();
2751 >        } catch (CompletionException ok) {
2752 >            checkCompletedWithWrappedException(h4, ex);
2753 >            rs[4].assertNotInvoked();
2754 >        }
2755 >        try {
2756 >            assertNull(h5.join());
2757 >            rs[5].assertInvoked();
2758 >        } catch (CompletionException ok) {
2759 >            checkCompletedWithWrappedException(h5, ex);
2760 >            rs[5].assertNotInvoked();
2761 >        }
2762  
2763 <    /**
2764 <     * runAfterBothAsync result completes exceptionally if either source cancelled
2765 <     */
2766 <    public void testRunAfterBothAsync4E() {
2767 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
2768 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
2769 <        Noop r = new Noop();
2770 <        CompletableFuture<Void> g = f.runAfterBothAsync(f2, r, new ThreadExecutor());
2771 <        assertTrue(f.cancel(true));
2772 <        f2.complete(two);
2773 <        checkCompletedWithWrappedCancellationException(g);
2763 >        checkCompletedExceptionally(f, ex);
2764 >        checkCompletedNormally(g, v1);
2765 >        checkCompletedWithWrappedException(h0, ex);
2766 >        checkCompletedWithWrappedException(h1, ex);
2767 >        checkCompletedWithWrappedException(h2, ex);
2768 >        checkCompletedWithWrappedException(h3, ex);
2769 >        checkCompletedWithWrappedException(h4, ex);
2770 >        for (int i = 0; i < 4; i++) rs[i].assertNotInvoked();
2771 >    }}
2772 >
2773 >    public void testRunAfterEither_exceptionalCompletion2() {
2774 >        for (ExecutionMode m : ExecutionMode.values())
2775 >        for (boolean fFirst : new boolean[] { true, false })
2776 >        for (Integer v1 : new Integer[] { 1, null })
2777 >    {
2778 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
2779 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
2780 >        final CFException ex = new CFException();
2781 >        final Noop[] rs = new Noop[6];
2782 >        for (int i = 0; i < rs.length; i++) rs[i] = new Noop(m);
2783 >
2784 >        final CompletableFuture<Void> h0 = m.runAfterEither(f, g, rs[0]);
2785 >        final CompletableFuture<Void> h1 = m.runAfterEither(g, f, rs[1]);
2786 >        assertTrue( fFirst ? f.complete(v1) : g.completeExceptionally(ex));
2787 >        assertTrue(!fFirst ? f.complete(v1) : g.completeExceptionally(ex));
2788 >        final CompletableFuture<Void> h2 = m.runAfterEither(f, g, rs[2]);
2789 >        final CompletableFuture<Void> h3 = m.runAfterEither(g, f, rs[3]);
2790  
2791 <        r = new Noop();
2792 <        f = new CompletableFuture<Integer>();
2793 <        f2 = new CompletableFuture<Integer>();
2794 <        g = f.runAfterBothAsync(f2, r, new ThreadExecutor());
2795 <        f.complete(one);
2796 <        assertTrue(f2.cancel(true));
2797 <        checkCompletedWithWrappedCancellationException(g);
2798 <    }
2791 >        // unspecified behavior - both source completions available
2792 >        try {
2793 >            assertEquals(null, h0.join());
2794 >            rs[0].assertInvoked();
2795 >        } catch (CompletionException ok) {
2796 >            checkCompletedWithWrappedException(h0, ex);
2797 >            rs[0].assertNotInvoked();
2798 >        }
2799 >        try {
2800 >            assertEquals(null, h1.join());
2801 >            rs[1].assertInvoked();
2802 >        } catch (CompletionException ok) {
2803 >            checkCompletedWithWrappedException(h1, ex);
2804 >            rs[1].assertNotInvoked();
2805 >        }
2806 >        try {
2807 >            assertEquals(null, h2.join());
2808 >            rs[2].assertInvoked();
2809 >        } catch (CompletionException ok) {
2810 >            checkCompletedWithWrappedException(h2, ex);
2811 >            rs[2].assertNotInvoked();
2812 >        }
2813 >        try {
2814 >            assertEquals(null, h3.join());
2815 >            rs[3].assertInvoked();
2816 >        } catch (CompletionException ok) {
2817 >            checkCompletedWithWrappedException(h3, ex);
2818 >            rs[3].assertNotInvoked();
2819 >        }
2820  
2821 <    /**
2822 <     * applyToEitherAsync result completes normally after normal
2823 <     * completion of sources
2330 <     */
2331 <    public void testApplyToEitherAsyncE() {
2332 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
2333 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
2334 <        CompletableFuture<Integer> g = f.applyToEitherAsync(f2, inc, new ThreadExecutor());
2335 <        f.complete(one);
2336 <        checkCompletedNormally(g, two);
2337 <
2338 <        f = new CompletableFuture<Integer>();
2339 <        f.complete(one);
2340 <        f2 = new CompletableFuture<Integer>();
2341 <        g = f.applyToEitherAsync(f2, inc, new ThreadExecutor());
2342 <        checkCompletedNormally(g, two);
2343 <    }
2821 >        checkCompletedNormally(f, v1);
2822 >        checkCompletedExceptionally(g, ex);
2823 >    }}
2824  
2825      /**
2826 <     * applyToEitherAsync result completes exceptionally after exceptional
2347 <     * completion of source
2826 >     * runAfterEither result completes exceptionally if either source cancelled
2827       */
2828 <    public void testApplyToEitherAsync2E() {
2829 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
2830 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
2831 <        CompletableFuture<Integer> g = f.applyToEitherAsync(f2, inc, new ThreadExecutor());
2832 <        f.completeExceptionally(new CFException());
2833 <        checkCompletedWithWrappedCFException(g);
2834 <
2835 <        f = new CompletableFuture<Integer>();
2836 <        f2 = new CompletableFuture<Integer>();
2837 <        f2.completeExceptionally(new CFException());
2838 <        g = f.applyToEitherAsync(f2, inc, new ThreadExecutor());
2839 <        f.complete(one);
2840 <        checkCompletedWithWrappedCFException(g);
2841 <    }
2828 >    public void testRunAfterEither_sourceCancelled() {
2829 >        for (ExecutionMode m : ExecutionMode.values())
2830 >        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2831 >        for (Integer v1 : new Integer[] { 1, null })
2832 >    {
2833 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
2834 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
2835 >        final Noop[] rs = new Noop[6];
2836 >        for (int i = 0; i < rs.length; i++) rs[i] = new Noop(m);
2837 >
2838 >        final CompletableFuture<Void> h0 = m.runAfterEither(f, g, rs[0]);
2839 >        final CompletableFuture<Void> h1 = m.runAfterEither(g, f, rs[1]);
2840 >        checkIncomplete(h0);
2841 >        checkIncomplete(h1);
2842 >        rs[0].assertNotInvoked();
2843 >        rs[1].assertNotInvoked();
2844 >        f.cancel(mayInterruptIfRunning);
2845 >        checkCompletedWithWrappedCancellationException(h0);
2846 >        checkCompletedWithWrappedCancellationException(h1);
2847 >        final CompletableFuture<Void> h2 = m.runAfterEither(f, g, rs[2]);
2848 >        final CompletableFuture<Void> h3 = m.runAfterEither(g, f, rs[3]);
2849 >        checkCompletedWithWrappedCancellationException(h2);
2850 >        checkCompletedWithWrappedCancellationException(h3);
2851 >
2852 >        assertTrue(g.complete(v1));
2853 >
2854 >        // unspecified behavior - both source completions available
2855 >        final CompletableFuture<Void> h4 = m.runAfterEither(f, g, rs[4]);
2856 >        final CompletableFuture<Void> h5 = m.runAfterEither(g, f, rs[5]);
2857 >        try {
2858 >            assertNull(h4.join());
2859 >            rs[4].assertInvoked();
2860 >        } catch (CompletionException ok) {
2861 >            checkCompletedWithWrappedCancellationException(h4);
2862 >            rs[4].assertNotInvoked();
2863 >        }
2864 >        try {
2865 >            assertNull(h5.join());
2866 >            rs[5].assertInvoked();
2867 >        } catch (CompletionException ok) {
2868 >            checkCompletedWithWrappedCancellationException(h5);
2869 >            rs[5].assertNotInvoked();
2870 >        }
2871  
2872 <    /**
2873 <     * applyToEitherAsync result completes exceptionally if action does
2874 <     */
2875 <    public void testApplyToEitherAsync3E() {
2876 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
2877 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
2878 <        FailingFunction r = new FailingFunction();
2879 <        CompletableFuture<Integer> g = f.applyToEitherAsync(f2, r, new ThreadExecutor());
2372 <        f.complete(one);
2373 <        checkCompletedWithWrappedCFException(g);
2374 <    }
2872 >        checkCancelled(f);
2873 >        checkCompletedNormally(g, v1);
2874 >        checkCompletedWithWrappedCancellationException(h0);
2875 >        checkCompletedWithWrappedCancellationException(h1);
2876 >        checkCompletedWithWrappedCancellationException(h2);
2877 >        checkCompletedWithWrappedCancellationException(h3);
2878 >        for (int i = 0; i < 4; i++) rs[i].assertNotInvoked();
2879 >    }}
2880  
2881      /**
2882 <     * applyToEitherAsync result completes exceptionally if either source cancelled
2882 >     * runAfterEither result completes exceptionally if action does
2883       */
2884 <    public void testApplyToEitherAsync4E() {
2885 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
2886 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
2887 <        CompletableFuture<Integer> g = f.applyToEitherAsync(f2, inc, new ThreadExecutor());
2888 <        assertTrue(f.cancel(true));
2889 <        checkCompletedWithWrappedCancellationException(g);
2890 <
2891 <        f = new CompletableFuture<Integer>();
2892 <        f2 = new CompletableFuture<Integer>();
2893 <        assertTrue(f2.cancel(true));
2894 <        g = f.applyToEitherAsync(f2, inc, new ThreadExecutor());
2895 <        checkCompletedWithWrappedCancellationException(g);
2896 <    }
2884 >    public void testRunAfterEither_actionFailed() {
2885 >        for (ExecutionMode m : ExecutionMode.values())
2886 >        for (Integer v1 : new Integer[] { 1, null })
2887 >        for (Integer v2 : new Integer[] { 2, null })
2888 >    {
2889 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
2890 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
2891 >        final FailingRunnable[] rs = new FailingRunnable[6];
2892 >        for (int i = 0; i < rs.length; i++) rs[i] = new FailingRunnable(m);
2893 >
2894 >        final CompletableFuture<Void> h0 = m.runAfterEither(f, g, rs[0]);
2895 >        final CompletableFuture<Void> h1 = m.runAfterEither(g, f, rs[1]);
2896 >        assertTrue(f.complete(v1));
2897 >        final CompletableFuture<Void> h2 = m.runAfterEither(f, g, rs[2]);
2898 >        final CompletableFuture<Void> h3 = m.runAfterEither(g, f, rs[3]);
2899 >        checkCompletedWithWrappedCFException(h0);
2900 >        checkCompletedWithWrappedCFException(h1);
2901 >        checkCompletedWithWrappedCFException(h2);
2902 >        checkCompletedWithWrappedCFException(h3);
2903 >        for (int i = 0; i < 4; i++) rs[i].assertInvoked();
2904 >        assertTrue(g.complete(v2));
2905 >        final CompletableFuture<Void> h4 = m.runAfterEither(f, g, rs[4]);
2906 >        final CompletableFuture<Void> h5 = m.runAfterEither(g, f, rs[5]);
2907 >        checkCompletedWithWrappedCFException(h4);
2908 >        checkCompletedWithWrappedCFException(h5);
2909 >
2910 >        checkCompletedNormally(f, v1);
2911 >        checkCompletedNormally(g, v2);
2912 >        for (int i = 0; i < 6; i++) rs[i].assertInvoked();
2913 >    }}
2914  
2915      /**
2916 <     * acceptEitherAsync result completes normally after normal
2395 <     * completion of sources
2916 >     * thenCompose result completes normally after normal completion of source
2917       */
2918 <    public void testAcceptEitherAsyncE() {
2919 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
2920 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
2921 <        IncAction r = new IncAction();
2922 <        CompletableFuture<Void> g = f.acceptEitherAsync(f2, r, new ThreadExecutor());
2923 <        f.complete(one);
2924 <        checkCompletedNormally(g, null);
2925 <        assertEquals(r.value, 2);
2926 <
2927 <        r = new IncAction();
2928 <        f = new CompletableFuture<Integer>();
2929 <        f.complete(one);
2930 <        f2 = new CompletableFuture<Integer>();
2931 <        g = f.acceptEitherAsync(f2, r, new ThreadExecutor());
2932 <        checkCompletedNormally(g, null);
2412 <        assertEquals(r.value, 2);
2413 <    }
2918 >    public void testThenCompose_normalCompletion() {
2919 >        for (ExecutionMode m : ExecutionMode.values())
2920 >        for (boolean createIncomplete : new boolean[] { true, false })
2921 >        for (Integer v1 : new Integer[] { 1, null })
2922 >    {
2923 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
2924 >        final CompletableFutureInc r = new CompletableFutureInc(m);
2925 >        if (!createIncomplete) assertTrue(f.complete(v1));
2926 >        final CompletableFuture<Integer> g = m.thenCompose(f, r);
2927 >        if (createIncomplete) assertTrue(f.complete(v1));
2928 >
2929 >        checkCompletedNormally(g, inc(v1));
2930 >        checkCompletedNormally(f, v1);
2931 >        r.assertValue(v1);
2932 >    }}
2933  
2934      /**
2935 <     * acceptEitherAsync result completes exceptionally after exceptional
2935 >     * thenCompose result completes exceptionally after exceptional
2936       * completion of source
2937       */
2938 <    public void testAcceptEitherAsync2E() {
2939 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
2940 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
2941 <        IncAction r = new IncAction();
2942 <        CompletableFuture<Void> g = f.acceptEitherAsync(f2, r, new ThreadExecutor());
2943 <        f.completeExceptionally(new CFException());
2944 <        checkCompletedWithWrappedCFException(g);
2945 <
2946 <        r = new IncAction();
2947 <        f = new CompletableFuture<Integer>();
2948 <        f2 = new CompletableFuture<Integer>();
2949 <        f2.completeExceptionally(new CFException());
2950 <        g = f.acceptEitherAsync(f2, r, new ThreadExecutor());
2951 <        f.complete(one);
2952 <        checkCompletedWithWrappedCFException(g);
2434 <    }
2435 <
2436 <    /**
2437 <     * acceptEitherAsync result completes exceptionally if action does
2438 <     */
2439 <    public void testAcceptEitherAsync3E() {
2440 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
2441 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
2442 <        FailingConsumer r = new FailingConsumer();
2443 <        CompletableFuture<Void> g = f.acceptEitherAsync(f2, r, new ThreadExecutor());
2444 <        f.complete(one);
2445 <        checkCompletedWithWrappedCFException(g);
2446 <    }
2447 <
2448 <    /**
2449 <     * acceptEitherAsync result completes exceptionally if either
2450 <     * source cancelled
2451 <     */
2452 <    public void testAcceptEitherAsync4E() {
2453 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
2454 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
2455 <        IncAction r = new IncAction();
2456 <        CompletableFuture<Void> g = f.acceptEitherAsync(f2, r, new ThreadExecutor());
2457 <        assertTrue(f.cancel(true));
2458 <        checkCompletedWithWrappedCancellationException(g);
2459 <
2460 <        r = new IncAction();
2461 <        f = new CompletableFuture<Integer>();
2462 <        f2 = new CompletableFuture<Integer>();
2463 <        assertTrue(f2.cancel(true));
2464 <        g = f.acceptEitherAsync(f2, r, new ThreadExecutor());
2465 <        checkCompletedWithWrappedCancellationException(g);
2466 <    }
2938 >    public void testThenCompose_exceptionalCompletion() {
2939 >        for (ExecutionMode m : ExecutionMode.values())
2940 >        for (boolean createIncomplete : new boolean[] { true, false })
2941 >    {
2942 >        final CFException ex = new CFException();
2943 >        final CompletableFutureInc r = new CompletableFutureInc(m);
2944 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
2945 >        if (!createIncomplete) f.completeExceptionally(ex);
2946 >        final CompletableFuture<Integer> g = m.thenCompose(f, r);
2947 >        if (createIncomplete) f.completeExceptionally(ex);
2948 >
2949 >        checkCompletedWithWrappedException(g, ex);
2950 >        checkCompletedExceptionally(f, ex);
2951 >        r.assertNotInvoked();
2952 >    }}
2953  
2954      /**
2955 <     * runAfterEitherAsync result completes normally after normal
2470 <     * completion of sources
2471 <     */
2472 <    public void testRunAfterEitherAsyncE() {
2473 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
2474 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
2475 <        Noop r = new Noop();
2476 <        CompletableFuture<Void> g = f.runAfterEitherAsync(f2, r, new ThreadExecutor());
2477 <        f.complete(one);
2478 <        checkCompletedNormally(g, null);
2479 <        assertTrue(r.ran);
2480 <
2481 <        r = new Noop();
2482 <        f = new CompletableFuture<Integer>();
2483 <        f.complete(one);
2484 <        f2 = new CompletableFuture<Integer>();
2485 <        g = f.runAfterEitherAsync(f2, r, new ThreadExecutor());
2486 <        checkCompletedNormally(g, null);
2487 <        assertTrue(r.ran);
2488 <    }
2489 <
2490 <    /**
2491 <     * runAfterEitherAsync result completes exceptionally after exceptional
2492 <     * completion of source
2955 >     * thenCompose result completes exceptionally if action does
2956       */
2957 <    public void testRunAfterEitherAsync2E() {
2958 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
2959 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
2960 <        Noop r = new Noop();
2961 <        CompletableFuture<Void> g = f.runAfterEitherAsync(f2, r, new ThreadExecutor());
2962 <        f.completeExceptionally(new CFException());
2963 <        checkCompletedWithWrappedCFException(g);
2957 >    public void testThenCompose_actionFailed() {
2958 >        for (ExecutionMode m : ExecutionMode.values())
2959 >        for (boolean createIncomplete : new boolean[] { true, false })
2960 >        for (Integer v1 : new Integer[] { 1, null })
2961 >    {
2962 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
2963 >        final FailingCompletableFutureFunction r
2964 >            = new FailingCompletableFutureFunction(m);
2965 >        if (!createIncomplete) assertTrue(f.complete(v1));
2966 >        final CompletableFuture<Integer> g = m.thenCompose(f, r);
2967 >        if (createIncomplete) assertTrue(f.complete(v1));
2968  
2502        r = new Noop();
2503        f = new CompletableFuture<Integer>();
2504        f2 = new CompletableFuture<Integer>();
2505        f2.completeExceptionally(new CFException());
2506        g = f.runAfterEitherAsync(f2, r, new ThreadExecutor());
2507        f.complete(one);
2969          checkCompletedWithWrappedCFException(g);
2970 <    }
2971 <
2511 <    /**
2512 <     * runAfterEitherAsync result completes exceptionally if action does
2513 <     */
2514 <    public void testRunAfterEitherAsync3E() {
2515 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
2516 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
2517 <        FailingNoop r = new FailingNoop();
2518 <        CompletableFuture<Void> g = f.runAfterEitherAsync(f2, r, new ThreadExecutor());
2519 <        f.complete(one);
2520 <        checkCompletedWithWrappedCFException(g);
2521 <    }
2970 >        checkCompletedNormally(f, v1);
2971 >    }}
2972  
2973      /**
2974 <     * runAfterEitherAsync result completes exceptionally if either
2525 <     * source cancelled
2974 >     * thenCompose result completes exceptionally if source cancelled
2975       */
2976 <    public void testRunAfterEitherAsync4E() {
2977 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
2978 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
2979 <        Noop r = new Noop();
2980 <        CompletableFuture<Void> g = f.runAfterEitherAsync(f2, r, new ThreadExecutor());
2981 <        assertTrue(f.cancel(true));
2982 <        checkCompletedWithWrappedCancellationException(g);
2976 >    public void testThenCompose_sourceCancelled() {
2977 >        for (ExecutionMode m : ExecutionMode.values())
2978 >        for (boolean createIncomplete : new boolean[] { true, false })
2979 >        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2980 >    {
2981 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
2982 >        final CompletableFutureInc r = new CompletableFutureInc(m);
2983 >        if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
2984 >        final CompletableFuture<Integer> g = m.thenCompose(f, r);
2985 >        if (createIncomplete) {
2986 >            checkIncomplete(g);
2987 >            assertTrue(f.cancel(mayInterruptIfRunning));
2988 >        }
2989  
2535        r = new Noop();
2536        f = new CompletableFuture<Integer>();
2537        f2 = new CompletableFuture<Integer>();
2538        assertTrue(f2.cancel(true));
2539        g = f.runAfterEitherAsync(f2, r, new ThreadExecutor());
2990          checkCompletedWithWrappedCancellationException(g);
2991 <    }
2992 <
2543 <    /**
2544 <     * thenComposeAsync result completes normally after normal
2545 <     * completion of source
2546 <     */
2547 <    public void testThenComposeAsyncE() {
2548 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
2549 <        CompletableFutureInc r = new CompletableFutureInc();
2550 <        CompletableFuture<Integer> g = f.thenComposeAsync(r, new ThreadExecutor());
2551 <        f.complete(one);
2552 <        checkCompletedNormally(g, two);
2553 <    }
2554 <
2555 <    /**
2556 <     * thenComposeAsync result completes exceptionally after
2557 <     * exceptional completion of source
2558 <     */
2559 <    public void testThenComposeAsync2E() {
2560 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
2561 <        CompletableFutureInc r = new CompletableFutureInc();
2562 <        CompletableFuture<Integer> g = f.thenComposeAsync(r, new ThreadExecutor());
2563 <        f.completeExceptionally(new CFException());
2564 <        checkCompletedWithWrappedCFException(g);
2565 <    }
2991 >        checkCancelled(f);
2992 >    }}
2993  
2994      /**
2995 <     * thenComposeAsync result completes exceptionally if action does
2995 >     * thenCompose result completes exceptionally if the result of the action does
2996       */
2997 <    public void testThenComposeAsync3E() {
2998 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
2999 <        FailingCompletableFutureFunction r = new FailingCompletableFutureFunction();
3000 <        CompletableFuture<Integer> g = f.thenComposeAsync(r, new ThreadExecutor());
3001 <        f.complete(one);
3002 <        checkCompletedWithWrappedCFException(g);
3003 <    }
2997 >    public void testThenCompose_actionReturnsFailingFuture() {
2998 >        for (ExecutionMode m : ExecutionMode.values())
2999 >        for (int order = 0; order < 6; order++)
3000 >        for (Integer v1 : new Integer[] { 1, null })
3001 >    {
3002 >        final CFException ex = new CFException();
3003 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
3004 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
3005 >        final CompletableFuture<Integer> h;
3006 >        // Test all permutations of orders
3007 >        switch (order) {
3008 >        case 0:
3009 >            assertTrue(f.complete(v1));
3010 >            assertTrue(g.completeExceptionally(ex));
3011 >            h = m.thenCompose(f, (x -> g));
3012 >            break;
3013 >        case 1:
3014 >            assertTrue(f.complete(v1));
3015 >            h = m.thenCompose(f, (x -> g));
3016 >            assertTrue(g.completeExceptionally(ex));
3017 >            break;
3018 >        case 2:
3019 >            assertTrue(g.completeExceptionally(ex));
3020 >            assertTrue(f.complete(v1));
3021 >            h = m.thenCompose(f, (x -> g));
3022 >            break;
3023 >        case 3:
3024 >            assertTrue(g.completeExceptionally(ex));
3025 >            h = m.thenCompose(f, (x -> g));
3026 >            assertTrue(f.complete(v1));
3027 >            break;
3028 >        case 4:
3029 >            h = m.thenCompose(f, (x -> g));
3030 >            assertTrue(f.complete(v1));
3031 >            assertTrue(g.completeExceptionally(ex));
3032 >            break;
3033 >        case 5:
3034 >            h = m.thenCompose(f, (x -> g));
3035 >            assertTrue(f.complete(v1));
3036 >            assertTrue(g.completeExceptionally(ex));
3037 >            break;
3038 >        default: throw new AssertionError();
3039 >        }
3040  
3041 <    /**
3042 <     * thenComposeAsync result completes exceptionally if source cancelled
3043 <     */
3044 <    public void testThenComposeAsync4E() {
2582 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
2583 <        CompletableFutureInc r = new CompletableFutureInc();
2584 <        CompletableFuture<Integer> g = f.thenComposeAsync(r, new ThreadExecutor());
2585 <        assertTrue(f.cancel(true));
2586 <        checkCompletedWithWrappedCancellationException(g);
2587 <    }
3041 >        checkCompletedExceptionally(g, ex);
3042 >        checkCompletedWithWrappedException(h, ex);
3043 >        checkCompletedNormally(f, v1);
3044 >    }}
3045  
3046      // other static methods
3047  
# Line 2593 | Line 3050 | public class CompletableFutureTest exten
3050       * with the value null
3051       */
3052      public void testAllOf_empty() throws Exception {
3053 <        CompletableFuture<?> f = CompletableFuture.allOf();
3053 >        CompletableFuture<Void> f = CompletableFuture.allOf();
3054          checkCompletedNormally(f, null);
3055      }
3056  
3057      /**
3058 <     * allOf returns a future completed when all components complete
3058 >     * allOf returns a future completed normally with the value null
3059 >     * when all components complete normally
3060       */
3061 <    public void testAllOf() throws Exception {
3062 <        for (int k = 1; k < 20; ++k) {
3063 <            CompletableFuture[] fs = new CompletableFuture[k];
3064 <            for (int i = 0; i < k; ++i)
3065 <                fs[i] = new CompletableFuture<Integer>();
3061 >    public void testAllOf_normal() throws Exception {
3062 >        for (int k = 1; k < 10; k++) {
3063 >            CompletableFuture<Integer>[] fs
3064 >                = (CompletableFuture<Integer>[]) new CompletableFuture[k];
3065 >            for (int i = 0; i < k; i++)
3066 >                fs[i] = new CompletableFuture<>();
3067 >            CompletableFuture<Void> f = CompletableFuture.allOf(fs);
3068 >            for (int i = 0; i < k; i++) {
3069 >                checkIncomplete(f);
3070 >                checkIncomplete(CompletableFuture.allOf(fs));
3071 >                fs[i].complete(one);
3072 >            }
3073 >            checkCompletedNormally(f, null);
3074 >            checkCompletedNormally(CompletableFuture.allOf(fs), null);
3075 >        }
3076 >    }
3077 >
3078 >    public void testAllOf_backwards() throws Exception {
3079 >        for (int k = 1; k < 10; k++) {
3080 >            CompletableFuture<Integer>[] fs
3081 >                = (CompletableFuture<Integer>[]) new CompletableFuture[k];
3082 >            for (int i = 0; i < k; i++)
3083 >                fs[i] = new CompletableFuture<>();
3084              CompletableFuture<Void> f = CompletableFuture.allOf(fs);
3085 <            for (int i = 0; i < k; ++i) {
3085 >            for (int i = k - 1; i >= 0; i--) {
3086                  checkIncomplete(f);
3087 +                checkIncomplete(CompletableFuture.allOf(fs));
3088                  fs[i].complete(one);
3089              }
3090              checkCompletedNormally(f, null);
3091 +            checkCompletedNormally(CompletableFuture.allOf(fs), null);
3092 +        }
3093 +    }
3094 +
3095 +    public void testAllOf_exceptional() throws Exception {
3096 +        for (int k = 1; k < 10; k++) {
3097 +            CompletableFuture<Integer>[] fs
3098 +                = (CompletableFuture<Integer>[]) new CompletableFuture[k];
3099 +            CFException ex = new CFException();
3100 +            for (int i = 0; i < k; i++)
3101 +                fs[i] = new CompletableFuture<>();
3102 +            CompletableFuture<Void> f = CompletableFuture.allOf(fs);
3103 +            for (int i = 0; i < k; i++) {
3104 +                checkIncomplete(f);
3105 +                checkIncomplete(CompletableFuture.allOf(fs));
3106 +                if (i != k/2) {
3107 +                    fs[i].complete(i);
3108 +                    checkCompletedNormally(fs[i], i);
3109 +                } else {
3110 +                    fs[i].completeExceptionally(ex);
3111 +                    checkCompletedExceptionally(fs[i], ex);
3112 +                }
3113 +            }
3114 +            checkCompletedWithWrappedException(f, ex);
3115 +            checkCompletedWithWrappedException(CompletableFuture.allOf(fs), ex);
3116          }
3117      }
3118  
# Line 2618 | Line 3120 | public class CompletableFutureTest exten
3120       * anyOf(no component futures) returns an incomplete future
3121       */
3122      public void testAnyOf_empty() throws Exception {
3123 <        CompletableFuture<?> f = CompletableFuture.anyOf();
3123 >        for (Integer v1 : new Integer[] { 1, null })
3124 >    {
3125 >        CompletableFuture<Object> f = CompletableFuture.anyOf();
3126          checkIncomplete(f);
3127 +
3128 +        f.complete(v1);
3129 +        checkCompletedNormally(f, v1);
3130 +    }}
3131 +
3132 +    /**
3133 +     * anyOf returns a future completed normally with a value when
3134 +     * a component future does
3135 +     */
3136 +    public void testAnyOf_normal() throws Exception {
3137 +        for (int k = 0; k < 10; k++) {
3138 +            CompletableFuture[] fs = new CompletableFuture[k];
3139 +            for (int i = 0; i < k; i++)
3140 +                fs[i] = new CompletableFuture<>();
3141 +            CompletableFuture<Object> f = CompletableFuture.anyOf(fs);
3142 +            checkIncomplete(f);
3143 +            for (int i = 0; i < k; i++) {
3144 +                fs[i].complete(i);
3145 +                checkCompletedNormally(f, 0);
3146 +                int x = (int) CompletableFuture.anyOf(fs).join();
3147 +                assertTrue(0 <= x && x <= i);
3148 +            }
3149 +        }
3150 +    }
3151 +    public void testAnyOf_normal_backwards() throws Exception {
3152 +        for (int k = 0; k < 10; k++) {
3153 +            CompletableFuture[] fs = new CompletableFuture[k];
3154 +            for (int i = 0; i < k; i++)
3155 +                fs[i] = new CompletableFuture<>();
3156 +            CompletableFuture<Object> f = CompletableFuture.anyOf(fs);
3157 +            checkIncomplete(f);
3158 +            for (int i = k - 1; i >= 0; i--) {
3159 +                fs[i].complete(i);
3160 +                checkCompletedNormally(f, k - 1);
3161 +                int x = (int) CompletableFuture.anyOf(fs).join();
3162 +                assertTrue(i <= x && x <= k - 1);
3163 +            }
3164 +        }
3165      }
3166  
3167      /**
3168 <     * anyOf returns a future completed when any components complete
3168 >     * anyOf result completes exceptionally when any component does.
3169       */
3170 <    public void testAnyOf() throws Exception {
3171 <        for (int k = 1; k < 20; ++k) {
3170 >    public void testAnyOf_exceptional() throws Exception {
3171 >        for (int k = 0; k < 10; k++) {
3172              CompletableFuture[] fs = new CompletableFuture[k];
3173 <            for (int i = 0; i < k; ++i)
3174 <                fs[i] = new CompletableFuture<Integer>();
3173 >            CFException[] exs = new CFException[k];
3174 >            for (int i = 0; i < k; i++) {
3175 >                fs[i] = new CompletableFuture<>();
3176 >                exs[i] = new CFException();
3177 >            }
3178              CompletableFuture<Object> f = CompletableFuture.anyOf(fs);
3179              checkIncomplete(f);
3180 <            for (int i = 0; i < k; ++i) {
3181 <                fs[i].complete(one);
3182 <                checkCompletedNormally(f, one);
3180 >            for (int i = 0; i < k; i++) {
3181 >                fs[i].completeExceptionally(exs[i]);
3182 >                checkCompletedWithWrappedException(f, exs[0]);
3183 >                checkCompletedWithWrappedCFException(CompletableFuture.anyOf(fs));
3184 >            }
3185 >        }
3186 >    }
3187 >
3188 >    public void testAnyOf_exceptional_backwards() throws Exception {
3189 >        for (int k = 0; k < 10; k++) {
3190 >            CompletableFuture[] fs = new CompletableFuture[k];
3191 >            CFException[] exs = new CFException[k];
3192 >            for (int i = 0; i < k; i++) {
3193 >                fs[i] = new CompletableFuture<>();
3194 >                exs[i] = new CFException();
3195 >            }
3196 >            CompletableFuture<Object> f = CompletableFuture.anyOf(fs);
3197 >            checkIncomplete(f);
3198 >            for (int i = k - 1; i >= 0; i--) {
3199 >                fs[i].completeExceptionally(exs[i]);
3200 >                checkCompletedWithWrappedException(f, exs[k - 1]);
3201 >                checkCompletedWithWrappedCFException(CompletableFuture.anyOf(fs));
3202              }
3203          }
3204      }
# Line 2643 | Line 3207 | public class CompletableFutureTest exten
3207       * Completion methods throw NullPointerException with null arguments
3208       */
3209      public void testNPE() {
3210 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
3211 <        CompletableFuture<Integer> g = new CompletableFuture<Integer>();
3210 >        CompletableFuture<Integer> f = new CompletableFuture<>();
3211 >        CompletableFuture<Integer> g = new CompletableFuture<>();
3212          CompletableFuture<Integer> nullFuture = (CompletableFuture<Integer>)null;
2649        CompletableFuture<?> h;
3213          ThreadExecutor exec = new ThreadExecutor();
3214  
3215          Runnable[] throwingActions = {
3216 <            () -> { CompletableFuture.supplyAsync(null); },
3217 <            () -> { CompletableFuture.supplyAsync(null, exec); },
3218 <            () -> { CompletableFuture.supplyAsync(supplyOne, null); },
3219 <
3220 <            () -> { CompletableFuture.runAsync(null); },
3221 <            () -> { CompletableFuture.runAsync(null, exec); },
3222 <            () -> { CompletableFuture.runAsync(() -> {}, null); },
3223 <
3224 <            () -> { f.completeExceptionally(null); },
3225 <
3226 <            () -> { f.thenApply(null); },
3227 <            () -> { f.thenApplyAsync(null); },
3228 <            () -> { f.thenApplyAsync((x) -> x, null); },
3229 <            () -> { f.thenApplyAsync(null, exec); },
3230 <
3231 <            () -> { f.thenAccept(null); },
3232 <            () -> { f.thenAcceptAsync(null); },
3233 <            () -> { f.thenAcceptAsync((x) -> { ; }, null); },
3234 <            () -> { f.thenAcceptAsync(null, exec); },
3235 <
3236 <            () -> { f.thenRun(null); },
3237 <            () -> { f.thenRunAsync(null); },
3238 <            () -> { f.thenRunAsync(() -> { ; }, null); },
3239 <            () -> { f.thenRunAsync(null, exec); },
3240 <
3241 <            () -> { f.thenCombine(g, null); },
3242 <            () -> { f.thenCombineAsync(g, null); },
3243 <            () -> { f.thenCombineAsync(g, null, exec); },
3244 <            () -> { f.thenCombine(nullFuture, (x, y) -> x); },
3245 <            () -> { f.thenCombineAsync(nullFuture, (x, y) -> x); },
3246 <            () -> { f.thenCombineAsync(nullFuture, (x, y) -> x, exec); },
3247 <            () -> { f.thenCombineAsync(g, (x, y) -> x, null); },
3248 <
3249 <            () -> { f.thenAcceptBoth(g, null); },
3250 <            () -> { f.thenAcceptBothAsync(g, null); },
3251 <            () -> { f.thenAcceptBothAsync(g, null, exec); },
3252 <            () -> { f.thenAcceptBoth(nullFuture, (x, y) -> {}); },
3253 <            () -> { f.thenAcceptBothAsync(nullFuture, (x, y) -> {}); },
3254 <            () -> { f.thenAcceptBothAsync(nullFuture, (x, y) -> {}, exec); },
3255 <            () -> { f.thenAcceptBothAsync(g, (x, y) -> {}, null); },
3256 <
3257 <            () -> { f.runAfterBoth(g, null); },
3258 <            () -> { f.runAfterBothAsync(g, null); },
3259 <            () -> { f.runAfterBothAsync(g, null, exec); },
3260 <            () -> { f.runAfterBoth(nullFuture, () -> {}); },
3261 <            () -> { f.runAfterBothAsync(nullFuture, () -> {}); },
3262 <            () -> { f.runAfterBothAsync(nullFuture, () -> {}, exec); },
3263 <            () -> { f.runAfterBothAsync(g, () -> {}, null); },
3264 <
3265 <            () -> { f.applyToEither(g, null); },
3266 <            () -> { f.applyToEitherAsync(g, null); },
3267 <            () -> { f.applyToEitherAsync(g, null, exec); },
3268 <            () -> { f.applyToEither(nullFuture, (x) -> x); },
3269 <            () -> { f.applyToEitherAsync(nullFuture, (x) -> x); },
3270 <            () -> { f.applyToEitherAsync(nullFuture, (x) -> x, exec); },
3271 <            () -> { f.applyToEitherAsync(g, (x) -> x, null); },
3272 <
3273 <            () -> { f.acceptEither(g, null); },
3274 <            () -> { f.acceptEitherAsync(g, null); },
3275 <            () -> { f.acceptEitherAsync(g, null, exec); },
3276 <            () -> { f.acceptEither(nullFuture, (x) -> {}); },
3277 <            () -> { f.acceptEitherAsync(nullFuture, (x) -> {}); },
3278 <            () -> { f.acceptEitherAsync(nullFuture, (x) -> {}, exec); },
3279 <            () -> { f.acceptEitherAsync(g, (x) -> {}, null); },
3280 <
3281 <            () -> { f.runAfterEither(g, null); },
3282 <            () -> { f.runAfterEitherAsync(g, null); },
3283 <            () -> { f.runAfterEitherAsync(g, null, exec); },
3284 <            () -> { f.runAfterEither(nullFuture, () -> {}); },
3285 <            () -> { f.runAfterEitherAsync(nullFuture, () -> {}); },
3286 <            () -> { f.runAfterEitherAsync(nullFuture, () -> {}, exec); },
3287 <            () -> { f.runAfterEitherAsync(g, () -> {}, null); },
3288 <
3289 <            () -> { f.thenCompose(null); },
3290 <            () -> { f.thenComposeAsync(null); },
3291 <            () -> { f.thenComposeAsync(new CompletableFutureInc(), null); },
3292 <            () -> { f.thenComposeAsync(null, exec); },
3293 <
3294 <            () -> { f.exceptionally(null); },
3295 <
3296 <            () -> { f.handle(null); },
3297 <
3298 <            () -> { CompletableFuture.allOf((CompletableFuture<?>)null); },
3299 <            () -> { CompletableFuture.allOf((CompletableFuture<?>[])null); },
3300 <            () -> { CompletableFuture.allOf(f, null); },
3301 <            () -> { CompletableFuture.allOf(null, f); },
3302 <
3303 <            () -> { CompletableFuture.anyOf((CompletableFuture<?>)null); },
3304 <            () -> { CompletableFuture.anyOf((CompletableFuture<?>[])null); },
3305 <            () -> { CompletableFuture.anyOf(f, null); },
3306 <            () -> { CompletableFuture.anyOf(null, f); },
3216 >            () -> CompletableFuture.supplyAsync(null),
3217 >            () -> CompletableFuture.supplyAsync(null, exec),
3218 >            () -> CompletableFuture.supplyAsync(new IntegerSupplier(ExecutionMode.SYNC, 42), null),
3219 >
3220 >            () -> CompletableFuture.runAsync(null),
3221 >            () -> CompletableFuture.runAsync(null, exec),
3222 >            () -> CompletableFuture.runAsync(() -> {}, null),
3223 >
3224 >            () -> f.completeExceptionally(null),
3225 >
3226 >            () -> f.thenApply(null),
3227 >            () -> f.thenApplyAsync(null),
3228 >            () -> f.thenApplyAsync((x) -> x, null),
3229 >            () -> f.thenApplyAsync(null, exec),
3230 >
3231 >            () -> f.thenAccept(null),
3232 >            () -> f.thenAcceptAsync(null),
3233 >            () -> f.thenAcceptAsync((x) -> {} , null),
3234 >            () -> f.thenAcceptAsync(null, exec),
3235 >
3236 >            () -> f.thenRun(null),
3237 >            () -> f.thenRunAsync(null),
3238 >            () -> f.thenRunAsync(() -> {} , null),
3239 >            () -> f.thenRunAsync(null, exec),
3240 >
3241 >            () -> f.thenCombine(g, null),
3242 >            () -> f.thenCombineAsync(g, null),
3243 >            () -> f.thenCombineAsync(g, null, exec),
3244 >            () -> f.thenCombine(nullFuture, (x, y) -> x),
3245 >            () -> f.thenCombineAsync(nullFuture, (x, y) -> x),
3246 >            () -> f.thenCombineAsync(nullFuture, (x, y) -> x, exec),
3247 >            () -> f.thenCombineAsync(g, (x, y) -> x, null),
3248 >
3249 >            () -> f.thenAcceptBoth(g, null),
3250 >            () -> f.thenAcceptBothAsync(g, null),
3251 >            () -> f.thenAcceptBothAsync(g, null, exec),
3252 >            () -> f.thenAcceptBoth(nullFuture, (x, y) -> {}),
3253 >            () -> f.thenAcceptBothAsync(nullFuture, (x, y) -> {}),
3254 >            () -> f.thenAcceptBothAsync(nullFuture, (x, y) -> {}, exec),
3255 >            () -> f.thenAcceptBothAsync(g, (x, y) -> {}, null),
3256 >
3257 >            () -> f.runAfterBoth(g, null),
3258 >            () -> f.runAfterBothAsync(g, null),
3259 >            () -> f.runAfterBothAsync(g, null, exec),
3260 >            () -> f.runAfterBoth(nullFuture, () -> {}),
3261 >            () -> f.runAfterBothAsync(nullFuture, () -> {}),
3262 >            () -> f.runAfterBothAsync(nullFuture, () -> {}, exec),
3263 >            () -> f.runAfterBothAsync(g, () -> {}, null),
3264 >
3265 >            () -> f.applyToEither(g, null),
3266 >            () -> f.applyToEitherAsync(g, null),
3267 >            () -> f.applyToEitherAsync(g, null, exec),
3268 >            () -> f.applyToEither(nullFuture, (x) -> x),
3269 >            () -> f.applyToEitherAsync(nullFuture, (x) -> x),
3270 >            () -> f.applyToEitherAsync(nullFuture, (x) -> x, exec),
3271 >            () -> f.applyToEitherAsync(g, (x) -> x, null),
3272 >
3273 >            () -> f.acceptEither(g, null),
3274 >            () -> f.acceptEitherAsync(g, null),
3275 >            () -> f.acceptEitherAsync(g, null, exec),
3276 >            () -> f.acceptEither(nullFuture, (x) -> {}),
3277 >            () -> f.acceptEitherAsync(nullFuture, (x) -> {}),
3278 >            () -> f.acceptEitherAsync(nullFuture, (x) -> {}, exec),
3279 >            () -> f.acceptEitherAsync(g, (x) -> {}, null),
3280 >
3281 >            () -> f.runAfterEither(g, null),
3282 >            () -> f.runAfterEitherAsync(g, null),
3283 >            () -> f.runAfterEitherAsync(g, null, exec),
3284 >            () -> f.runAfterEither(nullFuture, () -> {}),
3285 >            () -> f.runAfterEitherAsync(nullFuture, () -> {}),
3286 >            () -> f.runAfterEitherAsync(nullFuture, () -> {}, exec),
3287 >            () -> f.runAfterEitherAsync(g, () -> {}, null),
3288 >
3289 >            () -> f.thenCompose(null),
3290 >            () -> f.thenComposeAsync(null),
3291 >            () -> f.thenComposeAsync(new CompletableFutureInc(ExecutionMode.EXECUTOR), null),
3292 >            () -> f.thenComposeAsync(null, exec),
3293 >
3294 >            () -> f.exceptionally(null),
3295 >
3296 >            () -> f.handle(null),
3297 >
3298 >            () -> CompletableFuture.allOf((CompletableFuture<?>)null),
3299 >            () -> CompletableFuture.allOf((CompletableFuture<?>[])null),
3300 >            () -> CompletableFuture.allOf(f, null),
3301 >            () -> CompletableFuture.allOf(null, f),
3302 >
3303 >            () -> CompletableFuture.anyOf((CompletableFuture<?>)null),
3304 >            () -> CompletableFuture.anyOf((CompletableFuture<?>[])null),
3305 >            () -> CompletableFuture.anyOf(f, null),
3306 >            () -> CompletableFuture.anyOf(null, f),
3307 >
3308 >            () -> f.obtrudeException(null),
3309          };
3310  
3311          assertThrows(NullPointerException.class, throwingActions);
3312          assertEquals(0, exec.count.get());
3313      }
3314  
3315 +    /**
3316 +     * toCompletableFuture returns this CompletableFuture.
3317 +     */
3318 +    public void testToCompletableFuture() {
3319 +        CompletableFuture<Integer> f = new CompletableFuture<>();
3320 +        assertSame(f, f.toCompletableFuture());
3321 +    }
3322 +
3323 +    //--- tests of implementation details; not part of official tck ---
3324 +
3325 +    Object resultOf(CompletableFuture<?> f) {
3326 +        try {
3327 +            java.lang.reflect.Field resultField
3328 +                = CompletableFuture.class.getDeclaredField("result");
3329 +            resultField.setAccessible(true);
3330 +            return resultField.get(f);
3331 +        } catch (Throwable t) { throw new AssertionError(t); }
3332 +    }
3333 +
3334 +    public void testExceptionPropagationReusesResultObject() {
3335 +        if (!testImplementationDetails) return;
3336 +        for (ExecutionMode m : ExecutionMode.values())
3337 +    {
3338 +        final CFException ex = new CFException();
3339 +        final CompletableFuture<Integer> v42 = CompletableFuture.completedFuture(42);
3340 +        final CompletableFuture<Integer> incomplete = new CompletableFuture<>();
3341 +
3342 +        List<Function<CompletableFuture<Integer>, CompletableFuture<?>>> funs
3343 +            = new ArrayList<>();
3344 +
3345 +        funs.add((y) -> m.thenRun(y, new Noop(m)));
3346 +        funs.add((y) -> m.thenAccept(y, new NoopConsumer(m)));
3347 +        funs.add((y) -> m.thenApply(y, new IncFunction(m)));
3348 +
3349 +        funs.add((y) -> m.runAfterEither(y, incomplete, new Noop(m)));
3350 +        funs.add((y) -> m.acceptEither(y, incomplete, new NoopConsumer(m)));
3351 +        funs.add((y) -> m.applyToEither(y, incomplete, new IncFunction(m)));
3352 +
3353 +        funs.add((y) -> m.runAfterBoth(y, v42, new Noop(m)));
3354 +        funs.add((y) -> m.thenAcceptBoth(y, v42, new SubtractAction(m)));
3355 +        funs.add((y) -> m.thenCombine(y, v42, new SubtractFunction(m)));
3356 +
3357 +        funs.add((y) -> m.whenComplete(y, (Integer x, Throwable t) -> {}));
3358 +
3359 +        funs.add((y) -> m.thenCompose(y, new CompletableFutureInc(m)));
3360 +
3361 +        funs.add((y) -> CompletableFuture.allOf(new CompletableFuture<?>[] {y, v42}));
3362 +        funs.add((y) -> CompletableFuture.anyOf(new CompletableFuture<?>[] {y, incomplete}));
3363 +
3364 +        for (Function<CompletableFuture<Integer>, CompletableFuture<?>>
3365 +                 fun : funs) {
3366 +            CompletableFuture<Integer> f = new CompletableFuture<>();
3367 +            f.completeExceptionally(ex);
3368 +            CompletableFuture<Integer> src = m.thenApply(f, new IncFunction(m));
3369 +            checkCompletedWithWrappedException(src, ex);
3370 +            CompletableFuture<?> dep = fun.apply(src);
3371 +            checkCompletedWithWrappedException(dep, ex);
3372 +            assertSame(resultOf(src), resultOf(dep));
3373 +        }
3374 +
3375 +        for (Function<CompletableFuture<Integer>, CompletableFuture<?>>
3376 +                 fun : funs) {
3377 +            CompletableFuture<Integer> f = new CompletableFuture<>();
3378 +            CompletableFuture<Integer> src = m.thenApply(f, new IncFunction(m));
3379 +            CompletableFuture<?> dep = fun.apply(src);
3380 +            f.completeExceptionally(ex);
3381 +            checkCompletedWithWrappedException(src, ex);
3382 +            checkCompletedWithWrappedException(dep, ex);
3383 +            assertSame(resultOf(src), resultOf(dep));
3384 +        }
3385 +
3386 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
3387 +        for (Function<CompletableFuture<Integer>, CompletableFuture<?>>
3388 +                 fun : funs) {
3389 +            CompletableFuture<Integer> f = new CompletableFuture<>();
3390 +            f.cancel(mayInterruptIfRunning);
3391 +            checkCancelled(f);
3392 +            CompletableFuture<Integer> src = m.thenApply(f, new IncFunction(m));
3393 +            checkCompletedWithWrappedCancellationException(src);
3394 +            CompletableFuture<?> dep = fun.apply(src);
3395 +            checkCompletedWithWrappedCancellationException(dep);
3396 +            assertSame(resultOf(src), resultOf(dep));
3397 +        }
3398 +
3399 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
3400 +        for (Function<CompletableFuture<Integer>, CompletableFuture<?>>
3401 +                 fun : funs) {
3402 +            CompletableFuture<Integer> f = new CompletableFuture<>();
3403 +            CompletableFuture<Integer> src = m.thenApply(f, new IncFunction(m));
3404 +            CompletableFuture<?> dep = fun.apply(src);
3405 +            f.cancel(mayInterruptIfRunning);
3406 +            checkCancelled(f);
3407 +            checkCompletedWithWrappedCancellationException(src);
3408 +            checkCompletedWithWrappedCancellationException(dep);
3409 +            assertSame(resultOf(src), resultOf(dep));
3410 +        }
3411 +    }}
3412 +
3413   }

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