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Comparing jsr166/src/test/tck/CompletableFutureTest.java (file contents):
Revision 1.16 by jsr166, Thu Apr 4 04:01:05 2013 UTC vs.
Revision 1.70 by jsr166, Fri Jun 6 19:48:38 2014 UTC

# Line 16 | Line 16 | import java.util.concurrent.ExecutionExc
16   import java.util.concurrent.Future;
17   import java.util.concurrent.CompletableFuture;
18   import java.util.concurrent.CompletionException;
19 + import java.util.concurrent.CompletionStage;
20 + import java.util.concurrent.ForkJoinPool;
21 + import java.util.concurrent.ForkJoinTask;
22   import java.util.concurrent.TimeoutException;
23   import java.util.concurrent.atomic.AtomicInteger;
24   import static java.util.concurrent.TimeUnit.MILLISECONDS;
# Line 55 | Line 58 | public class CompletableFutureTest exten
58  
59      <T> void checkCompletedNormally(CompletableFuture<T> f, T value) {
60          try {
61 +            assertEquals(value, f.get(LONG_DELAY_MS, MILLISECONDS));
62 +        } catch (Throwable fail) { threadUnexpectedException(fail); }
63 +        try {
64              assertEquals(value, f.join());
65          } catch (Throwable fail) { threadUnexpectedException(fail); }
66          try {
# Line 63 | Line 69 | public class CompletableFutureTest exten
69          try {
70              assertEquals(value, f.get());
71          } catch (Throwable fail) { threadUnexpectedException(fail); }
66        try {
67            assertEquals(value, f.get(0L, SECONDS));
68        } catch (Throwable fail) { threadUnexpectedException(fail); }
72          assertTrue(f.isDone());
73          assertFalse(f.isCancelled());
74 +        assertFalse(f.isCompletedExceptionally());
75          assertTrue(f.toString().contains("[Completed normally]"));
76      }
77  
78      void checkCompletedWithWrappedCFException(CompletableFuture<?> f) {
79          try {
80 +            f.get(LONG_DELAY_MS, MILLISECONDS);
81 +            shouldThrow();
82 +        } catch (ExecutionException success) {
83 +            assertTrue(success.getCause() instanceof CFException);
84 +        } catch (Throwable fail) { threadUnexpectedException(fail); }
85 +        try {
86              f.join();
87              shouldThrow();
88          } catch (CompletionException success) {
# Line 90 | Line 100 | public class CompletableFutureTest exten
100          } catch (ExecutionException success) {
101              assertTrue(success.getCause() instanceof CFException);
102          } catch (Throwable fail) { threadUnexpectedException(fail); }
103 +        assertTrue(f.isDone());
104 +        assertFalse(f.isCancelled());
105 +        assertTrue(f.toString().contains("[Completed exceptionally]"));
106 +    }
107 +
108 +    void checkCompletedWithWrappedCFException(CompletableFuture<?> f,
109 +                                              CFException ex) {
110          try {
111 <            f.get(0L, SECONDS);
111 >            f.get(LONG_DELAY_MS, MILLISECONDS);
112              shouldThrow();
113          } catch (ExecutionException success) {
114 <            assertTrue(success.getCause() instanceof CFException);
114 >            assertSame(ex, success.getCause());
115 >        } catch (Throwable fail) { threadUnexpectedException(fail); }
116 >        try {
117 >            f.join();
118 >            shouldThrow();
119 >        } catch (CompletionException success) {
120 >            assertSame(ex, success.getCause());
121 >        }
122 >        try {
123 >            f.getNow(null);
124 >            shouldThrow();
125 >        } catch (CompletionException success) {
126 >            assertSame(ex, success.getCause());
127 >        }
128 >        try {
129 >            f.get();
130 >            shouldThrow();
131 >        } catch (ExecutionException success) {
132 >            assertSame(ex, success.getCause());
133          } catch (Throwable fail) { threadUnexpectedException(fail); }
134          assertTrue(f.isDone());
135          assertFalse(f.isCancelled());
# Line 103 | Line 138 | public class CompletableFutureTest exten
138  
139      void checkCancelled(CompletableFuture<?> f) {
140          try {
141 +            f.get(LONG_DELAY_MS, MILLISECONDS);
142 +            shouldThrow();
143 +        } catch (CancellationException success) {
144 +        } catch (Throwable fail) { threadUnexpectedException(fail); }
145 +        try {
146              f.join();
147              shouldThrow();
148          } catch (CancellationException success) {}
# Line 115 | Line 155 | public class CompletableFutureTest exten
155              shouldThrow();
156          } catch (CancellationException success) {
157          } catch (Throwable fail) { threadUnexpectedException(fail); }
118        try {
119            f.get(0L, SECONDS);
120            shouldThrow();
121        } catch (CancellationException success) {
122        } catch (Throwable fail) { threadUnexpectedException(fail); }
158          assertTrue(f.isDone());
159 +        assertTrue(f.isCompletedExceptionally());
160          assertTrue(f.isCancelled());
161          assertTrue(f.toString().contains("[Completed exceptionally]"));
162      }
163  
164      void checkCompletedWithWrappedCancellationException(CompletableFuture<?> f) {
165          try {
166 +            f.get(LONG_DELAY_MS, MILLISECONDS);
167 +            shouldThrow();
168 +        } catch (ExecutionException success) {
169 +            assertTrue(success.getCause() instanceof CancellationException);
170 +        } catch (Throwable fail) { threadUnexpectedException(fail); }
171 +        try {
172              f.join();
173              shouldThrow();
174          } catch (CompletionException success) {
# Line 144 | Line 186 | public class CompletableFutureTest exten
186          } catch (ExecutionException success) {
187              assertTrue(success.getCause() instanceof CancellationException);
188          } catch (Throwable fail) { threadUnexpectedException(fail); }
147        try {
148            f.get(0L, SECONDS);
149            shouldThrow();
150        } catch (ExecutionException success) {
151            assertTrue(success.getCause() instanceof CancellationException);
152        } catch (Throwable fail) { threadUnexpectedException(fail); }
189          assertTrue(f.isDone());
190          assertFalse(f.isCancelled());
191 +        assertTrue(f.isCompletedExceptionally());
192          assertTrue(f.toString().contains("[Completed exceptionally]"));
193      }
194  
# Line 160 | Line 197 | public class CompletableFutureTest exten
197       * by methods isDone, isCancelled, and getNow
198       */
199      public void testConstructor() {
200 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
200 >        CompletableFuture<Integer> f = new CompletableFuture<>();
201          checkIncomplete(f);
202      }
203  
# Line 169 | Line 206 | public class CompletableFutureTest exten
206       * isCancelled, join, get, and getNow
207       */
208      public void testComplete() {
209 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
209 >        CompletableFuture<Integer> f = new CompletableFuture<>();
210          checkIncomplete(f);
211          f.complete(one);
212          checkCompletedNormally(f, one);
# Line 180 | Line 217 | public class CompletableFutureTest exten
217       * methods isDone, isCancelled, join, get, and getNow
218       */
219      public void testCompleteExceptionally() {
220 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
220 >        CompletableFuture<Integer> f = new CompletableFuture<>();
221          checkIncomplete(f);
222          f.completeExceptionally(new CFException());
223          checkCompletedWithWrappedCFException(f);
# Line 191 | Line 228 | public class CompletableFutureTest exten
228       * methods isDone, isCancelled, join, get, and getNow
229       */
230      public void testCancel() {
231 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
231 >        CompletableFuture<Integer> f = new CompletableFuture<>();
232          checkIncomplete(f);
233          assertTrue(f.cancel(true));
234          checkCancelled(f);
# Line 201 | Line 238 | public class CompletableFutureTest exten
238       * obtrudeValue forces completion with given value
239       */
240      public void testObtrudeValue() {
241 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
241 >        CompletableFuture<Integer> f = new CompletableFuture<>();
242          checkIncomplete(f);
243          f.complete(one);
244          checkCompletedNormally(f, one);
# Line 209 | Line 246 | public class CompletableFutureTest exten
246          checkCompletedNormally(f, three);
247          f.obtrudeValue(two);
248          checkCompletedNormally(f, two);
249 <        f = new CompletableFuture<Integer>();
249 >        f = new CompletableFuture<>();
250          f.obtrudeValue(three);
251          checkCompletedNormally(f, three);
252 <        f = new CompletableFuture<Integer>();
252 >        f.obtrudeValue(null);
253 >        checkCompletedNormally(f, null);
254 >        f = new CompletableFuture<>();
255          f.completeExceptionally(new CFException());
256          f.obtrudeValue(four);
257          checkCompletedNormally(f, four);
# Line 222 | Line 261 | public class CompletableFutureTest exten
261       * obtrudeException forces completion with given exception
262       */
263      public void testObtrudeException() {
264 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
264 >        CompletableFuture<Integer> f = new CompletableFuture<>();
265          checkIncomplete(f);
266          f.complete(one);
267          checkCompletedNormally(f, one);
268          f.obtrudeException(new CFException());
269          checkCompletedWithWrappedCFException(f);
270 <        f = new CompletableFuture<Integer>();
270 >        f = new CompletableFuture<>();
271          f.obtrudeException(new CFException());
272          checkCompletedWithWrappedCFException(f);
273 <        f = new CompletableFuture<Integer>();
273 >        f = new CompletableFuture<>();
274          f.completeExceptionally(new CFException());
275          f.obtrudeValue(four);
276          checkCompletedNormally(f, four);
# Line 243 | Line 282 | public class CompletableFutureTest exten
282       * getNumberOfDependents returns number of dependent tasks
283       */
284      public void testGetNumberOfDependents() {
285 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
286 <        assertEquals(f.getNumberOfDependents(), 0);
287 <        CompletableFuture g = f.thenRun(new Noop());
288 <        assertEquals(f.getNumberOfDependents(), 1);
289 <        assertEquals(g.getNumberOfDependents(), 0);
290 <        CompletableFuture h = f.thenRun(new Noop());
291 <        assertEquals(f.getNumberOfDependents(), 2);
285 >        CompletableFuture<Integer> f = new CompletableFuture<>();
286 >        assertEquals(0, f.getNumberOfDependents());
287 >        CompletableFuture g = f.thenRun(new Noop(ExecutionMode.DEFAULT));
288 >        assertEquals(1, f.getNumberOfDependents());
289 >        assertEquals(0, g.getNumberOfDependents());
290 >        CompletableFuture h = f.thenRun(new Noop(ExecutionMode.DEFAULT));
291 >        assertEquals(2, f.getNumberOfDependents());
292          f.complete(1);
293          checkCompletedNormally(g, null);
294 <        assertEquals(f.getNumberOfDependents(), 0);
295 <        assertEquals(g.getNumberOfDependents(), 0);
294 >        assertEquals(0, f.getNumberOfDependents());
295 >        assertEquals(0, g.getNumberOfDependents());
296      }
297  
259
298      /**
299       * toString indicates current completion state
300       */
# Line 282 | Line 320 | public class CompletableFutureTest exten
320          checkCompletedNormally(f, "test");
321      }
322  
323 <    static final Supplier<Integer> supplyOne =
324 <        () -> Integer.valueOf(1);
325 <    static final Function<Integer, Integer> inc =
326 <        (Integer x) -> Integer.valueOf(x.intValue() + 1);
327 <    static final BiFunction<Integer, Integer, Integer> add =
328 <        (Integer x, Integer y) -> Integer.valueOf(x.intValue() + y.intValue());
329 <    static final class IncAction implements Consumer<Integer> {
292 <        int value;
293 <        public void accept(Integer x) { value = x.intValue() + 1; }
294 <    }
295 <    static final class AddAction implements BiConsumer<Integer, Integer> {
296 <        int value;
297 <        public void accept(Integer x, Integer y) {
298 <            value = x.intValue() + y.intValue();
323 >    abstract class CheckedAction {
324 >        int invocationCount = 0;
325 >        final ExecutionMode m;
326 >        CheckedAction(ExecutionMode m) { this.m = m; }
327 >        void invoked() {
328 >            m.checkExecutionMode();
329 >            assertEquals(0, invocationCount++);
330          }
331 <    }
332 <    static final class Noop implements Runnable {
302 <        boolean ran;
303 <        public void run() { ran = true; }
304 <    }
305 <
306 <    static final class FailingSupplier implements Supplier<Integer> {
307 <        boolean ran;
308 <        public Integer get() { ran = true; throw new CFException(); }
309 <    }
310 <    static final class FailingConsumer implements Consumer<Integer> {
311 <        boolean ran;
312 <        public void accept(Integer x) { ran = true; throw new CFException(); }
313 <    }
314 <    static final class FailingBiConsumer implements BiConsumer<Integer, Integer> {
315 <        boolean ran;
316 <        public void accept(Integer x, Integer y) { ran = true; throw new CFException(); }
317 <    }
318 <    static final class FailingFunction implements Function<Integer, Integer> {
319 <        boolean ran;
320 <        public Integer apply(Integer x) { ran = true; throw new CFException(); }
321 <    }
322 <    static final class FailingBiFunction implements BiFunction<Integer, Integer, Integer> {
323 <        boolean ran;
324 <        public Integer apply(Integer x, Integer y) { ran = true; throw new CFException(); }
325 <    }
326 <    static final class FailingNoop implements Runnable {
327 <        boolean ran;
328 <        public void run() { ran = true; throw new CFException(); }
331 >        void assertNotInvoked() { assertEquals(0, invocationCount); }
332 >        void assertInvoked() { assertEquals(1, invocationCount); }
333      }
334  
335 <    static final class CompletableFutureInc implements Function<Integer, CompletableFuture<Integer>> {
336 <        public CompletableFuture<Integer> apply(Integer x) {
337 <            CompletableFuture<Integer> f = new CompletableFuture<Integer>();
338 <            f.complete(Integer.valueOf(x.intValue() + 1));
339 <            return f;
335 >    abstract class CheckedIntegerAction extends CheckedAction {
336 >        Integer value;
337 >        CheckedIntegerAction(ExecutionMode m) { super(m); }
338 >        void assertValue(Integer expected) {
339 >            assertInvoked();
340 >            assertEquals(expected, value);
341          }
342      }
343  
344 <    static final class FailingCompletableFutureFunction implements Function<Integer, CompletableFuture<Integer>> {
345 <        boolean ran;
346 <        public CompletableFuture<Integer> apply(Integer x) {
347 <            ran = true; throw new CFException();
344 >    class IntegerSupplier extends CheckedAction
345 >        implements Supplier<Integer>
346 >    {
347 >        final Integer value;
348 >        IntegerSupplier(ExecutionMode m, Integer value) {
349 >            super(m);
350 >            this.value = value;
351          }
352 <    }
353 <
354 <    // Used for explicit executor tests
347 <    static final class ThreadExecutor implements Executor {
348 <        public void execute(Runnable r) {
349 <            new Thread(r).start();
352 >        public Integer get() {
353 >            invoked();
354 >            return value;
355          }
356      }
357  
358 <    static final class ExceptionToInteger implements Function<Throwable, Integer> {
359 <        public Integer apply(Throwable x) { return Integer.valueOf(3); }
358 >    // A function that handles and produces null values as well.
359 >    static Integer inc(Integer x) {
360 >        return (x == null) ? null : x + 1;
361      }
362  
363 <    static final class IntegerHandler implements BiFunction<Integer, Throwable, Integer> {
364 <        boolean ran;
365 <        public Integer apply(Integer x, Throwable t) {
366 <            ran = true;
367 <            return (t == null) ? two : three;
363 >    class NoopConsumer extends CheckedIntegerAction
364 >        implements Consumer<Integer>
365 >    {
366 >        NoopConsumer(ExecutionMode m) { super(m); }
367 >        public void accept(Integer x) {
368 >            invoked();
369 >            value = x;
370          }
371      }
372  
373 <
374 <    /**
375 <     * exceptionally action completes with function value on source
376 <     * exception;  otherwise with source value
377 <     */
378 <    public void testExceptionally() {
379 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
380 <        ExceptionToInteger r = new ExceptionToInteger();
373 <        CompletableFuture<Integer> g = f.exceptionally(r);
374 <        f.completeExceptionally(new CFException());
375 <        checkCompletedNormally(g, three);
376 <
377 <        f = new CompletableFuture<Integer>();
378 <        r = new ExceptionToInteger();
379 <        g = f.exceptionally(r);
380 <        f.complete(one);
381 <        checkCompletedNormally(g, one);
382 <    }
383 <
384 <    /**
385 <     * handle action completes normally with function value on either
386 <     * normal or exceptional completion of source
387 <     */
388 <    public void testHandle() {
389 <        CompletableFuture<Integer> f, g;
390 <        IntegerHandler r;
391 <
392 <        f = new CompletableFuture<Integer>();
393 <        f.completeExceptionally(new CFException());
394 <        g = f.handle(r = new IntegerHandler());
395 <        assertTrue(r.ran);
396 <        checkCompletedNormally(g, three);
397 <
398 <        f = new CompletableFuture<Integer>();
399 <        g = f.handle(r = new IntegerHandler());
400 <        assertFalse(r.ran);
401 <        f.completeExceptionally(new CFException());
402 <        checkCompletedNormally(g, three);
403 <        assertTrue(r.ran);
404 <
405 <        f = new CompletableFuture<Integer>();
406 <        f.complete(one);
407 <        g = f.handle(r = new IntegerHandler());
408 <        assertTrue(r.ran);
409 <        checkCompletedNormally(g, two);
410 <
411 <        f = new CompletableFuture<Integer>();
412 <        g = f.handle(r = new IntegerHandler());
413 <        assertFalse(r.ran);
414 <        f.complete(one);
415 <        assertTrue(r.ran);
416 <        checkCompletedNormally(g, two);
417 <    }
418 <
419 <    /**
420 <     * runAsync completes after running Runnable
421 <     */
422 <    public void testRunAsync() {
423 <        Noop r = new Noop();
424 <        CompletableFuture<Void> f = CompletableFuture.runAsync(r);
425 <        assertNull(f.join());
426 <        assertTrue(r.ran);
427 <        checkCompletedNormally(f, null);
428 <    }
429 <
430 <    /**
431 <     * runAsync with executor completes after running Runnable
432 <     */
433 <    public void testRunAsync2() {
434 <        Noop r = new Noop();
435 <        CompletableFuture<Void> f = CompletableFuture.runAsync(r, new ThreadExecutor());
436 <        assertNull(f.join());
437 <        assertTrue(r.ran);
438 <        checkCompletedNormally(f, null);
439 <    }
440 <
441 <    /**
442 <     * failing runAsync completes exceptionally after running Runnable
443 <     */
444 <    public void testRunAsync3() {
445 <        FailingNoop r = new FailingNoop();
446 <        CompletableFuture<Void> f = CompletableFuture.runAsync(r);
447 <        checkCompletedWithWrappedCFException(f);
448 <        assertTrue(r.ran);
449 <    }
450 <
451 <    /**
452 <     * supplyAsync completes with result of supplier
453 <     */
454 <    public void testSupplyAsync() {
455 <        CompletableFuture<Integer> f = CompletableFuture.supplyAsync(supplyOne);
456 <        assertEquals(f.join(), one);
457 <    }
458 <
459 <    /**
460 <     * supplyAsync with executor completes with result of supplier
461 <     */
462 <    public void testSupplyAsync2() {
463 <        CompletableFuture<Integer> f = CompletableFuture.supplyAsync(supplyOne, new ThreadExecutor());
464 <        assertEquals(f.join(), one);
465 <    }
466 <
467 <    /**
468 <     * Failing supplyAsync completes exceptionally
469 <     */
470 <    public void testSupplyAsync3() {
471 <        FailingSupplier r = new FailingSupplier();
472 <        CompletableFuture<Integer> f = CompletableFuture.supplyAsync(r);
473 <        checkCompletedWithWrappedCFException(f);
474 <        assertTrue(r.ran);
475 <    }
476 <
477 <    // seq completion methods
478 <
479 <    /**
480 <     * thenRun result completes normally after normal completion of source
481 <     */
482 <    public void testThenRun() {
483 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
484 <        Noop r = new Noop();
485 <        CompletableFuture<Void> g = f.thenRun(r);
486 <        f.complete(null);
487 <        checkCompletedNormally(g, null);
488 <        // reordered version
489 <        f = new CompletableFuture<Integer>();
490 <        f.complete(null);
491 <        r = new Noop();
492 <        g = f.thenRun(r);
493 <        checkCompletedNormally(g, null);
494 <    }
495 <
496 <    /**
497 <     * thenRun result completes exceptionally after exceptional
498 <     * completion of source
499 <     */
500 <    public void testThenRun2() {
501 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
502 <        Noop r = new Noop();
503 <        CompletableFuture<Void> g = f.thenRun(r);
504 <        f.completeExceptionally(new CFException());
505 <        checkCompletedWithWrappedCFException(g);
506 <    }
507 <
508 <    /**
509 <     * thenRun result completes exceptionally if action does
510 <     */
511 <    public void testThenRun3() {
512 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
513 <        FailingNoop r = new FailingNoop();
514 <        CompletableFuture<Void> g = f.thenRun(r);
515 <        f.complete(null);
516 <        checkCompletedWithWrappedCFException(g);
517 <    }
518 <
519 <    /**
520 <     * thenRun result completes exceptionally if source cancelled
521 <     */
522 <    public void testThenRun4() {
523 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
524 <        Noop r = new Noop();
525 <        CompletableFuture<Void> g = f.thenRun(r);
526 <        assertTrue(f.cancel(true));
527 <        checkCompletedWithWrappedCancellationException(g);
373 >    class IncFunction extends CheckedIntegerAction
374 >        implements Function<Integer,Integer>
375 >    {
376 >        IncFunction(ExecutionMode m) { super(m); }
377 >        public Integer apply(Integer x) {
378 >            invoked();
379 >            return value = inc(x);
380 >        }
381      }
382  
383 <    /**
384 <     * thenApply result completes normally after normal completion of source
385 <     */
386 <    public void testThenApply() {
387 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
388 <        CompletableFuture<Integer> g = f.thenApply(inc);
536 <        f.complete(one);
537 <        checkCompletedNormally(g, two);
383 >    // Choose non-commutative actions for better coverage
384 >    // A non-commutative function that handles and produces null values as well.
385 >    static Integer subtract(Integer x, Integer y) {
386 >        return (x == null && y == null) ? null :
387 >            ((x == null) ? 42 : x.intValue())
388 >            - ((y == null) ? 99 : y.intValue());
389      }
390  
391 <    /**
392 <     * thenApply result completes exceptionally after exceptional
393 <     * completion of source
394 <     */
395 <    public void testThenApply2() {
396 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
397 <        CompletableFuture<Integer> g = f.thenApply(inc);
398 <        f.completeExceptionally(new CFException());
548 <        checkCompletedWithWrappedCFException(g);
549 <    }
550 <
551 <    /**
552 <     * thenApply result completes exceptionally if action does
553 <     */
554 <    public void testThenApply3() {
555 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
556 <        CompletableFuture<Integer> g = f.thenApply(new FailingFunction());
557 <        f.complete(one);
558 <        checkCompletedWithWrappedCFException(g);
559 <    }
560 <
561 <    /**
562 <     * thenApply result completes exceptionally if source cancelled
563 <     */
564 <    public void testThenApply4() {
565 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
566 <        CompletableFuture<Integer> g = f.thenApply(inc);
567 <        assertTrue(f.cancel(true));
568 <        checkCompletedWithWrappedCancellationException(g);
391 >    class SubtractAction extends CheckedIntegerAction
392 >        implements BiConsumer<Integer, Integer>
393 >    {
394 >        SubtractAction(ExecutionMode m) { super(m); }
395 >        public void accept(Integer x, Integer y) {
396 >            invoked();
397 >            value = subtract(x, y);
398 >        }
399      }
400  
401 <    /**
402 <     * thenAccept result completes normally after normal completion of source
403 <     */
404 <    public void testThenAccept() {
405 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
406 <        IncAction r = new IncAction();
407 <        CompletableFuture<Void> g = f.thenAccept(r);
408 <        f.complete(one);
579 <        checkCompletedNormally(g, null);
580 <        assertEquals(r.value, 2);
401 >    class SubtractFunction extends CheckedIntegerAction
402 >        implements BiFunction<Integer, Integer, Integer>
403 >    {
404 >        SubtractFunction(ExecutionMode m) { super(m); }
405 >        public Integer apply(Integer x, Integer y) {
406 >            invoked();
407 >            return value = subtract(x, y);
408 >        }
409      }
410  
411 <    /**
412 <     * thenAccept result completes exceptionally after exceptional
413 <     * completion of source
414 <     */
415 <    public void testThenAccept2() {
588 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
589 <        IncAction r = new IncAction();
590 <        CompletableFuture<Void> g = f.thenAccept(r);
591 <        f.completeExceptionally(new CFException());
592 <        checkCompletedWithWrappedCFException(g);
411 >    class Noop extends CheckedAction implements Runnable {
412 >        Noop(ExecutionMode m) { super(m); }
413 >        public void run() {
414 >            invoked();
415 >        }
416      }
417  
418 <    /**
419 <     * thenAccept result completes exceptionally if action does
420 <     */
421 <    public void testThenAccept3() {
422 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
423 <        FailingConsumer r = new FailingConsumer();
424 <        CompletableFuture<Void> g = f.thenAccept(r);
425 <        f.complete(one);
603 <        checkCompletedWithWrappedCFException(g);
604 <        assertTrue(r.ran);
418 >    class FailingSupplier extends CheckedAction
419 >        implements Supplier<Integer>
420 >    {
421 >        FailingSupplier(ExecutionMode m) { super(m); }
422 >        public Integer get() {
423 >            invoked();
424 >            throw new CFException();
425 >        }
426      }
427  
428 <    /**
429 <     * thenAccept result completes exceptionally if source cancelled
430 <     */
431 <    public void testThenAccept4() {
432 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
433 <        IncAction r = new IncAction();
434 <        CompletableFuture<Void> g = f.thenAccept(r);
435 <        assertTrue(f.cancel(true));
436 <        checkCompletedWithWrappedCancellationException(g);
428 >    class FailingConsumer extends CheckedIntegerAction
429 >        implements Consumer<Integer>
430 >    {
431 >        FailingConsumer(ExecutionMode m) { super(m); }
432 >        public void accept(Integer x) {
433 >            invoked();
434 >            value = x;
435 >            throw new CFException();
436 >        }
437      }
438  
439 <
440 <    /**
441 <     * thenCombine result completes normally after normal completion of sources
442 <     */
443 <    public void testThenCombine() {
444 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
445 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
446 <        CompletableFuture<Integer> g = f.thenCombine(f2, add);
447 <        f.complete(one);
627 <        checkIncomplete(g);
628 <        f2.complete(two);
629 <        checkCompletedNormally(g, three);
630 <
631 <        f = new CompletableFuture<Integer>();
632 <        f.complete(one);
633 <        f2 = new CompletableFuture<Integer>();
634 <        g = f.thenCombine(f2, add);
635 <        checkIncomplete(g);
636 <        f2.complete(two);
637 <        checkCompletedNormally(g, three);
439 >    class FailingBiConsumer extends CheckedIntegerAction
440 >        implements BiConsumer<Integer, Integer>
441 >    {
442 >        FailingBiConsumer(ExecutionMode m) { super(m); }
443 >        public void accept(Integer x, Integer y) {
444 >            invoked();
445 >            value = subtract(x, y);
446 >            throw new CFException();
447 >        }
448      }
449  
450 <    /**
451 <     * thenCombine result completes exceptionally after exceptional
452 <     * completion of either source
453 <     */
454 <    public void testThenCombine2() {
455 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
456 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
457 <        CompletableFuture<Integer> g = f.thenCombine(f2, add);
458 <        f.completeExceptionally(new CFException());
649 <        f2.complete(two);
650 <        checkCompletedWithWrappedCFException(g);
651 <
652 <        f = new CompletableFuture<Integer>();
653 <        f.complete(one);
654 <        f2 = new CompletableFuture<Integer>();
655 <        g = f.thenCombine(f2, add);
656 <        f2.completeExceptionally(new CFException());
657 <        checkCompletedWithWrappedCFException(g);
450 >    class FailingFunction extends CheckedIntegerAction
451 >        implements Function<Integer, Integer>
452 >    {
453 >        FailingFunction(ExecutionMode m) { super(m); }
454 >        public Integer apply(Integer x) {
455 >            invoked();
456 >            value = x;
457 >            throw new CFException();
458 >        }
459      }
460  
461 <    /**
462 <     * thenCombine result completes exceptionally if action does
463 <     */
464 <    public void testThenCombine3() {
465 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
466 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
467 <        FailingBiFunction r = new FailingBiFunction();
468 <        CompletableFuture<Integer> g = f.thenCombine(f2, r);
469 <        f.complete(one);
669 <        checkIncomplete(g);
670 <        f2.complete(two);
671 <        checkCompletedWithWrappedCFException(g);
461 >    class FailingBiFunction extends CheckedIntegerAction
462 >        implements BiFunction<Integer, Integer, Integer>
463 >    {
464 >        FailingBiFunction(ExecutionMode m) { super(m); }
465 >        public Integer apply(Integer x, Integer y) {
466 >            invoked();
467 >            value = subtract(x, y);
468 >            throw new CFException();
469 >        }
470      }
471  
472 <    /**
473 <     * thenCombine result completes exceptionally if either source cancelled
474 <     */
475 <    public void testThenCombine4() {
476 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
477 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
680 <        CompletableFuture<Integer> g = f.thenCombine(f2, add);
681 <        assertTrue(f.cancel(true));
682 <        f2.complete(two);
683 <        checkCompletedWithWrappedCancellationException(g);
684 <        f = new CompletableFuture<Integer>();
685 <        f2 = new CompletableFuture<Integer>();
686 <        g = f.thenCombine(f2, add);
687 <        f.complete(one);
688 <        assertTrue(f2.cancel(true));
689 <        checkCompletedWithWrappedCancellationException(g);
472 >    class FailingRunnable extends CheckedAction implements Runnable {
473 >        FailingRunnable(ExecutionMode m) { super(m); }
474 >        public void run() {
475 >            invoked();
476 >            throw new CFException();
477 >        }
478      }
479  
692    /**
693     * thenAcceptBoth result completes normally after normal
694     * completion of sources
695     */
696    public void testThenAcceptBoth() {
697        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
698        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
699        AddAction r = new AddAction();
700        CompletableFuture<Void> g = f.thenAcceptBoth(f2, r);
701        f.complete(one);
702        checkIncomplete(g);
703        f2.complete(two);
704        checkCompletedNormally(g, null);
705        assertEquals(r.value, 3);
480  
481 <        r = new AddAction();
482 <        f = new CompletableFuture<Integer>();
483 <        f.complete(one);
484 <        f2 = new CompletableFuture<Integer>();
485 <        g = f.thenAcceptBoth(f2, r);
486 <        checkIncomplete(g);
487 <        f2.complete(two);
488 <        checkCompletedNormally(g, null);
489 <        assertEquals(r.value, 3);
481 >    class CompletableFutureInc extends CheckedIntegerAction
482 >        implements Function<Integer, CompletableFuture<Integer>>
483 >    {
484 >        CompletableFutureInc(ExecutionMode m) { super(m); }
485 >        public CompletableFuture<Integer> apply(Integer x) {
486 >            invoked();
487 >            value = x;
488 >            CompletableFuture<Integer> f = new CompletableFuture<>();
489 >            f.complete(inc(x));
490 >            return f;
491 >        }
492      }
493  
494 <    /**
495 <     * thenAcceptBoth result completes exceptionally after exceptional
496 <     * completion of either source
497 <     */
498 <    public void testThenAcceptBoth2() {
499 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
500 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
501 <        AddAction r = new AddAction();
502 <        CompletableFuture<Void> g = f.thenAcceptBoth(f2, r);
727 <        f.completeExceptionally(new CFException());
728 <        f2.complete(two);
729 <        checkCompletedWithWrappedCFException(g);
730 <
731 <        r = new AddAction();
732 <        f = new CompletableFuture<Integer>();
733 <        f.complete(one);
734 <        f2 = new CompletableFuture<Integer>();
735 <        g = f.thenAcceptBoth(f2, r);
736 <        f2.completeExceptionally(new CFException());
737 <        checkCompletedWithWrappedCFException(g);
494 >    class FailingCompletableFutureFunction extends CheckedIntegerAction
495 >        implements Function<Integer, CompletableFuture<Integer>>
496 >    {
497 >        FailingCompletableFutureFunction(ExecutionMode m) { super(m); }
498 >        public CompletableFuture<Integer> apply(Integer x) {
499 >            invoked();
500 >            value = x;
501 >            throw new CFException();
502 >        }
503      }
504  
505 <    /**
506 <     * thenAcceptBoth result completes exceptionally if action does
507 <     */
508 <    public void testThenAcceptBoth3() {
509 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
510 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
511 <        FailingBiConsumer r = new FailingBiConsumer();
747 <        CompletableFuture<Void> g = f.thenAcceptBoth(f2, r);
748 <        f.complete(one);
749 <        checkIncomplete(g);
750 <        f2.complete(two);
751 <        checkCompletedWithWrappedCFException(g);
752 <    }
505 >    // Used for explicit executor tests
506 >    static final class ThreadExecutor implements Executor {
507 >        final AtomicInteger count = new AtomicInteger(0);
508 >        static final ThreadGroup tg = new ThreadGroup("ThreadExecutor");
509 >        static boolean startedCurrentThread() {
510 >            return Thread.currentThread().getThreadGroup() == tg;
511 >        }
512  
513 <    /**
514 <     * thenAcceptBoth result completes exceptionally if either source cancelled
515 <     */
516 <    public void testThenAcceptBoth4() {
758 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
759 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
760 <        AddAction r = new AddAction();
761 <        CompletableFuture<Void> g = f.thenAcceptBoth(f2, r);
762 <        assertTrue(f.cancel(true));
763 <        f2.complete(two);
764 <        checkCompletedWithWrappedCancellationException(g);
765 <        f = new CompletableFuture<Integer>();
766 <        f2 = new CompletableFuture<Integer>();
767 <        r = new AddAction();
768 <        g = f.thenAcceptBoth(f2, r);
769 <        f.complete(one);
770 <        assertTrue(f2.cancel(true));
771 <        checkCompletedWithWrappedCancellationException(g);
513 >        public void execute(Runnable r) {
514 >            count.getAndIncrement();
515 >            new Thread(tg, r).start();
516 >        }
517      }
518  
519      /**
520 <     * runAfterBoth result completes normally after normal
521 <     * completion of sources
520 >     * Permits the testing of parallel code for the 3 different
521 >     * execution modes without copy/pasting all the test methods.
522       */
523 <    public void testRunAfterBoth() {
524 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
525 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
526 <        Noop r = new Noop();
527 <        CompletableFuture<Void> g = f.runAfterBoth(f2, r);
528 <        f.complete(one);
529 <        checkIncomplete(g);
530 <        f2.complete(two);
531 <        checkCompletedNormally(g, null);
532 <        assertTrue(r.ran);
533 <
534 <        r = new Noop();
535 <        f = new CompletableFuture<Integer>();
536 <        f.complete(one);
537 <        f2 = new CompletableFuture<Integer>();
538 <        g = f.runAfterBoth(f2, r);
539 <        checkIncomplete(g);
540 <        f2.complete(two);
541 <        checkCompletedNormally(g, null);
542 <        assertTrue(r.ran);
543 <    }
523 >    enum ExecutionMode {
524 >        DEFAULT {
525 >            public void checkExecutionMode() {
526 >                assertFalse(ThreadExecutor.startedCurrentThread());
527 >                assertNull(ForkJoinTask.getPool());
528 >            }
529 >            public CompletableFuture<Void> runAsync(Runnable a) {
530 >                throw new UnsupportedOperationException();
531 >            }
532 >            public <U> CompletableFuture<U> supplyAsync(Supplier<U> a) {
533 >                throw new UnsupportedOperationException();
534 >            }
535 >            public <T> CompletableFuture<Void> thenRun
536 >                (CompletableFuture<T> f, Runnable a) {
537 >                return f.thenRun(a);
538 >            }
539 >            public <T> CompletableFuture<Void> thenAccept
540 >                (CompletableFuture<T> f, Consumer<? super T> a) {
541 >                return f.thenAccept(a);
542 >            }
543 >            public <T,U> CompletableFuture<U> thenApply
544 >                (CompletableFuture<T> f, Function<? super T,U> a) {
545 >                return f.thenApply(a);
546 >            }
547 >            public <T,U> CompletableFuture<U> thenCompose
548 >                (CompletableFuture<T> f,
549 >                 Function<? super T,? extends CompletionStage<U>> a) {
550 >                return f.thenCompose(a);
551 >            }
552 >            public <T,U> CompletableFuture<U> handle
553 >                (CompletableFuture<T> f,
554 >                 BiFunction<? super T,Throwable,? extends U> a) {
555 >                return f.handle(a);
556 >            }
557 >            public <T> CompletableFuture<T> whenComplete
558 >                (CompletableFuture<T> f,
559 >                 BiConsumer<? super T,? super Throwable> a) {
560 >                return f.whenComplete(a);
561 >            }
562 >            public <T,U> CompletableFuture<Void> runAfterBoth
563 >                (CompletableFuture<T> f, CompletableFuture<U> g, Runnable a) {
564 >                return f.runAfterBoth(g, a);
565 >            }
566 >            public <T,U> CompletableFuture<Void> thenAcceptBoth
567 >                (CompletableFuture<T> f,
568 >                 CompletionStage<? extends U> g,
569 >                 BiConsumer<? super T,? super U> a) {
570 >                return f.thenAcceptBoth(g, a);
571 >            }
572 >            public <T,U,V> CompletableFuture<V> thenCombine
573 >                (CompletableFuture<T> f,
574 >                 CompletionStage<? extends U> g,
575 >                 BiFunction<? super T,? super U,? extends V> a) {
576 >                return f.thenCombine(g, a);
577 >            }
578 >            public <T> CompletableFuture<Void> runAfterEither
579 >                (CompletableFuture<T> f,
580 >                 CompletionStage<?> g,
581 >                 java.lang.Runnable a) {
582 >                return f.runAfterEither(g, a);
583 >            }
584 >            public <T> CompletableFuture<Void> acceptEither
585 >                (CompletableFuture<T> f,
586 >                 CompletionStage<? extends T> g,
587 >                 Consumer<? super T> a) {
588 >                return f.acceptEither(g, a);
589 >            }
590 >            public <T,U> CompletableFuture<U> applyToEither
591 >                (CompletableFuture<T> f,
592 >                 CompletionStage<? extends T> g,
593 >                 Function<? super T,U> a) {
594 >                return f.applyToEither(g, a);
595 >            }
596 >        },
597  
598 <    /**
599 <     * runAfterBoth result completes exceptionally after exceptional
600 <     * completion of either source
601 <     */
602 <    public void testRunAfterBoth2() {
603 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
604 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
605 <        Noop r = new Noop();
606 <        CompletableFuture<Void> g = f.runAfterBoth(f2, r);
607 <        f.completeExceptionally(new CFException());
608 <        f2.complete(two);
609 <        checkCompletedWithWrappedCFException(g);
598 >        ASYNC {
599 >            public void checkExecutionMode() {
600 >                assertSame(ForkJoinPool.commonPool(),
601 >                           ForkJoinTask.getPool());
602 >            }
603 >            public CompletableFuture<Void> runAsync(Runnable a) {
604 >                return CompletableFuture.runAsync(a);
605 >            }
606 >            public <U> CompletableFuture<U> supplyAsync(Supplier<U> a) {
607 >                return CompletableFuture.supplyAsync(a);
608 >            }
609 >            public <T> CompletableFuture<Void> thenRun
610 >                (CompletableFuture<T> f, Runnable a) {
611 >                return f.thenRunAsync(a);
612 >            }
613 >            public <T> CompletableFuture<Void> thenAccept
614 >                (CompletableFuture<T> f, Consumer<? super T> a) {
615 >                return f.thenAcceptAsync(a);
616 >            }
617 >            public <T,U> CompletableFuture<U> thenApply
618 >                (CompletableFuture<T> f, Function<? super T,U> a) {
619 >                return f.thenApplyAsync(a);
620 >            }
621 >            public <T,U> CompletableFuture<U> thenCompose
622 >                (CompletableFuture<T> f,
623 >                 Function<? super T,? extends CompletionStage<U>> a) {
624 >                return f.thenComposeAsync(a);
625 >            }
626 >            public <T,U> CompletableFuture<U> handle
627 >                (CompletableFuture<T> f,
628 >                 BiFunction<? super T,Throwable,? extends U> a) {
629 >                return f.handleAsync(a);
630 >            }
631 >            public <T> CompletableFuture<T> whenComplete
632 >                (CompletableFuture<T> f,
633 >                 BiConsumer<? super T,? super Throwable> a) {
634 >                return f.whenCompleteAsync(a);
635 >            }
636 >            public <T,U> CompletableFuture<Void> runAfterBoth
637 >                (CompletableFuture<T> f, CompletableFuture<U> g, Runnable a) {
638 >                return f.runAfterBothAsync(g, a);
639 >            }
640 >            public <T,U> CompletableFuture<Void> thenAcceptBoth
641 >                (CompletableFuture<T> f,
642 >                 CompletionStage<? extends U> g,
643 >                 BiConsumer<? super T,? super U> a) {
644 >                return f.thenAcceptBothAsync(g, a);
645 >            }
646 >            public <T,U,V> CompletableFuture<V> thenCombine
647 >                (CompletableFuture<T> f,
648 >                 CompletionStage<? extends U> g,
649 >                 BiFunction<? super T,? super U,? extends V> a) {
650 >                return f.thenCombineAsync(g, a);
651 >            }
652 >            public <T> CompletableFuture<Void> runAfterEither
653 >                (CompletableFuture<T> f,
654 >                 CompletionStage<?> g,
655 >                 java.lang.Runnable a) {
656 >                return f.runAfterEitherAsync(g, a);
657 >            }
658 >            public <T> CompletableFuture<Void> acceptEither
659 >                (CompletableFuture<T> f,
660 >                 CompletionStage<? extends T> g,
661 >                 Consumer<? super T> a) {
662 >                return f.acceptEitherAsync(g, a);
663 >            }
664 >            public <T,U> CompletableFuture<U> applyToEither
665 >                (CompletableFuture<T> f,
666 >                 CompletionStage<? extends T> g,
667 >                 Function<? super T,U> a) {
668 >                return f.applyToEitherAsync(g, a);
669 >            }
670 >        },
671  
672 <        r = new Noop();
673 <        f = new CompletableFuture<Integer>();
674 <        f.complete(one);
675 <        f2 = new CompletableFuture<Integer>();
676 <        g = f.runAfterBoth(f2, r);
677 <        f2.completeExceptionally(new CFException());
678 <        checkCompletedWithWrappedCFException(g);
679 <    }
672 >        EXECUTOR {
673 >            public void checkExecutionMode() {
674 >                assertTrue(ThreadExecutor.startedCurrentThread());
675 >            }
676 >            public CompletableFuture<Void> runAsync(Runnable a) {
677 >                return CompletableFuture.runAsync(a, new ThreadExecutor());
678 >            }
679 >            public <U> CompletableFuture<U> supplyAsync(Supplier<U> a) {
680 >                return CompletableFuture.supplyAsync(a, new ThreadExecutor());
681 >            }
682 >            public <T> CompletableFuture<Void> thenRun
683 >                (CompletableFuture<T> f, Runnable a) {
684 >                return f.thenRunAsync(a, new ThreadExecutor());
685 >            }
686 >            public <T> CompletableFuture<Void> thenAccept
687 >                (CompletableFuture<T> f, Consumer<? super T> a) {
688 >                return f.thenAcceptAsync(a, new ThreadExecutor());
689 >            }
690 >            public <T,U> CompletableFuture<U> thenApply
691 >                (CompletableFuture<T> f, Function<? super T,U> a) {
692 >                return f.thenApplyAsync(a, new ThreadExecutor());
693 >            }
694 >            public <T,U> CompletableFuture<U> thenCompose
695 >                (CompletableFuture<T> f,
696 >                 Function<? super T,? extends CompletionStage<U>> a) {
697 >                return f.thenComposeAsync(a, new ThreadExecutor());
698 >            }
699 >            public <T,U> CompletableFuture<U> handle
700 >                (CompletableFuture<T> f,
701 >                 BiFunction<? super T,Throwable,? extends U> a) {
702 >                return f.handleAsync(a, new ThreadExecutor());
703 >            }
704 >            public <T> CompletableFuture<T> whenComplete
705 >                (CompletableFuture<T> f,
706 >                 BiConsumer<? super T,? super Throwable> a) {
707 >                return f.whenCompleteAsync(a, new ThreadExecutor());
708 >            }
709 >            public <T,U> CompletableFuture<Void> runAfterBoth
710 >                (CompletableFuture<T> f, CompletableFuture<U> g, Runnable a) {
711 >                return f.runAfterBothAsync(g, a, new ThreadExecutor());
712 >            }
713 >            public <T,U> CompletableFuture<Void> thenAcceptBoth
714 >                (CompletableFuture<T> f,
715 >                 CompletionStage<? extends U> g,
716 >                 BiConsumer<? super T,? super U> a) {
717 >                return f.thenAcceptBothAsync(g, a, new ThreadExecutor());
718 >            }
719 >            public <T,U,V> CompletableFuture<V> thenCombine
720 >                (CompletableFuture<T> f,
721 >                 CompletionStage<? extends U> g,
722 >                 BiFunction<? super T,? super U,? extends V> a) {
723 >                return f.thenCombineAsync(g, a, new ThreadExecutor());
724 >            }
725 >            public <T> CompletableFuture<Void> runAfterEither
726 >                (CompletableFuture<T> f,
727 >                 CompletionStage<?> g,
728 >                 java.lang.Runnable a) {
729 >                return f.runAfterEitherAsync(g, a, new ThreadExecutor());
730 >            }
731 >            public <T> CompletableFuture<Void> acceptEither
732 >                (CompletableFuture<T> f,
733 >                 CompletionStage<? extends T> g,
734 >                 Consumer<? super T> a) {
735 >                return f.acceptEitherAsync(g, a, new ThreadExecutor());
736 >            }
737 >            public <T,U> CompletableFuture<U> applyToEither
738 >                (CompletableFuture<T> f,
739 >                 CompletionStage<? extends T> g,
740 >                 Function<? super T,U> a) {
741 >                return f.applyToEitherAsync(g, a, new ThreadExecutor());
742 >            }
743 >        };
744  
745 <    /**
746 <     * runAfterBoth result completes exceptionally if action does
747 <     */
748 <    public void testRunAfterBoth3() {
749 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
750 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
751 <        FailingNoop r = new FailingNoop();
752 <        CompletableFuture<Void> g = f.runAfterBoth(f2, r);
753 <        f.complete(one);
754 <        checkIncomplete(g);
755 <        f2.complete(two);
756 <        checkCompletedWithWrappedCFException(g);
757 <    }
745 >        public abstract void checkExecutionMode();
746 >        public abstract CompletableFuture<Void> runAsync(Runnable a);
747 >        public abstract <U> CompletableFuture<U> supplyAsync(Supplier<U> a);
748 >        public abstract <T> CompletableFuture<Void> thenRun
749 >            (CompletableFuture<T> f, Runnable a);
750 >        public abstract <T> CompletableFuture<Void> thenAccept
751 >            (CompletableFuture<T> f, Consumer<? super T> a);
752 >        public abstract <T,U> CompletableFuture<U> thenApply
753 >            (CompletableFuture<T> f, Function<? super T,U> a);
754 >        public abstract <T,U> CompletableFuture<U> thenCompose
755 >            (CompletableFuture<T> f,
756 >             Function<? super T,? extends CompletionStage<U>> a);
757 >        public abstract <T,U> CompletableFuture<U> handle
758 >            (CompletableFuture<T> f,
759 >             BiFunction<? super T,Throwable,? extends U> a);
760 >        public abstract <T> CompletableFuture<T> whenComplete
761 >            (CompletableFuture<T> f,
762 >             BiConsumer<? super T,? super Throwable> a);
763 >        public abstract <T,U> CompletableFuture<Void> runAfterBoth
764 >            (CompletableFuture<T> f, CompletableFuture<U> g, Runnable a);
765 >        public abstract <T,U> CompletableFuture<Void> thenAcceptBoth
766 >            (CompletableFuture<T> f,
767 >             CompletionStage<? extends U> g,
768 >             BiConsumer<? super T,? super U> a);
769 >        public abstract <T,U,V> CompletableFuture<V> thenCombine
770 >            (CompletableFuture<T> f,
771 >             CompletionStage<? extends U> g,
772 >             BiFunction<? super T,? super U,? extends V> a);
773 >        public abstract <T> CompletableFuture<Void> runAfterEither
774 >            (CompletableFuture<T> f,
775 >             CompletionStage<?> g,
776 >             java.lang.Runnable a);
777 >        public abstract <T> CompletableFuture<Void> acceptEither
778 >            (CompletableFuture<T> f,
779 >             CompletionStage<? extends T> g,
780 >             Consumer<? super T> a);
781 >        public abstract <T,U> CompletableFuture<U> applyToEither
782 >            (CompletableFuture<T> f,
783 >             CompletionStage<? extends T> g,
784 >             Function<? super T,U> a);
785 >    }
786 >
787 >    /**
788 >     * exceptionally action is not invoked when source completes
789 >     * normally, and source result is propagated
790 >     */
791 >    public void testExceptionally_normalCompletion() {
792 >        for (boolean createIncomplete : new boolean[] { true, false })
793 >        for (Integer v1 : new Integer[] { 1, null })
794 >    {
795 >        final AtomicInteger a = new AtomicInteger(0);
796 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
797 >        if (!createIncomplete) f.complete(v1);
798 >        final CompletableFuture<Integer> g = f.exceptionally
799 >            ((Throwable t) -> {
800 >                // Should not be called
801 >                a.getAndIncrement();
802 >                throw new AssertionError();
803 >            });
804 >        if (createIncomplete) f.complete(v1);
805 >
806 >        checkCompletedNormally(g, v1);
807 >        checkCompletedNormally(f, v1);
808 >        assertEquals(0, a.get());
809 >    }}
810  
836    /**
837     * runAfterBoth result completes exceptionally if either source cancelled
838     */
839    public void testRunAfterBoth4() {
840        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
841        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
842        Noop r = new Noop();
843        CompletableFuture<Void> g = f.runAfterBoth(f2, r);
844        assertTrue(f.cancel(true));
845        f2.complete(two);
846        checkCompletedWithWrappedCancellationException(g);
847        f = new CompletableFuture<Integer>();
848        f2 = new CompletableFuture<Integer>();
849        r = new Noop();
850        g = f.runAfterBoth(f2, r);
851        f.complete(one);
852        assertTrue(f2.cancel(true));
853        checkCompletedWithWrappedCancellationException(g);
854    }
811  
812      /**
813 <     * applyToEither result completes normally after normal completion
814 <     * of either source
813 >     * exceptionally action completes with function value on source
814 >     * exception
815       */
816 <    public void testApplyToEither() {
817 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
818 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
819 <        CompletableFuture<Integer> g = f.applyToEither(f2, inc);
820 <        f.complete(one);
821 <        checkCompletedNormally(g, two);
822 <        f2.complete(one);
823 <        checkCompletedNormally(g, two);
824 <
825 <        f = new CompletableFuture<Integer>();
826 <        f.complete(one);
827 <        f2 = new CompletableFuture<Integer>();
828 <        g = f.applyToEither(f2, inc);
829 <        checkCompletedNormally(g, two);
830 <    }
816 >    public void testExceptionally_exceptionalCompletion() {
817 >        for (boolean createIncomplete : new boolean[] { true, false })
818 >        for (Integer v1 : new Integer[] { 1, null })
819 >    {
820 >        final AtomicInteger a = new AtomicInteger(0);
821 >        final CFException ex = new CFException();
822 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
823 >        if (!createIncomplete) f.completeExceptionally(ex);
824 >        final CompletableFuture<Integer> g = f.exceptionally
825 >            ((Throwable t) -> {
826 >                ExecutionMode.DEFAULT.checkExecutionMode();
827 >                threadAssertSame(t, ex);
828 >                a.getAndIncrement();
829 >                return v1;
830 >            });
831 >        if (createIncomplete) f.completeExceptionally(ex);
832 >
833 >        checkCompletedNormally(g, v1);
834 >        assertEquals(1, a.get());
835 >    }}
836 >
837 >    public void testExceptionally_exceptionalCompletionActionFailed() {
838 >        for (boolean createIncomplete : new boolean[] { true, false })
839 >        for (Integer v1 : new Integer[] { 1, null })
840 >    {
841 >        final AtomicInteger a = new AtomicInteger(0);
842 >        final CFException ex1 = new CFException();
843 >        final CFException ex2 = new CFException();
844 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
845 >        if (!createIncomplete) f.completeExceptionally(ex1);
846 >        final CompletableFuture<Integer> g = f.exceptionally
847 >            ((Throwable t) -> {
848 >                ExecutionMode.DEFAULT.checkExecutionMode();
849 >                threadAssertSame(t, ex1);
850 >                a.getAndIncrement();
851 >                throw ex2;
852 >            });
853 >        if (createIncomplete) f.completeExceptionally(ex1);
854 >
855 >        checkCompletedWithWrappedCFException(g, ex2);
856 >        assertEquals(1, a.get());
857 >    }}
858 >
859 >    /**
860 >     * handle action completes normally with function value on normal
861 >     * completion of source
862 >     */
863 >    public void testHandle_normalCompletion() {
864 >        for (ExecutionMode m : ExecutionMode.values())
865 >        for (boolean createIncomplete : new boolean[] { true, false })
866 >        for (Integer v1 : new Integer[] { 1, null })
867 >    {
868 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
869 >        final AtomicInteger a = new AtomicInteger(0);
870 >        if (!createIncomplete) f.complete(v1);
871 >        final CompletableFuture<Integer> g = m.handle
872 >            (f,
873 >             (Integer x, Throwable t) -> {
874 >                m.checkExecutionMode();
875 >                threadAssertSame(x, v1);
876 >                threadAssertNull(t);
877 >                a.getAndIncrement();
878 >                return inc(v1);
879 >            });
880 >        if (createIncomplete) f.complete(v1);
881 >
882 >        checkCompletedNormally(g, inc(v1));
883 >        checkCompletedNormally(f, v1);
884 >        assertEquals(1, a.get());
885 >    }}
886  
887      /**
888 <     * applyToEither result completes exceptionally after exceptional
889 <     * completion of either source
888 >     * handle action completes normally with function value on
889 >     * exceptional completion of source
890       */
891 <    public void testApplyToEither2() {
892 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
893 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
894 <        CompletableFuture<Integer> g = f.applyToEither(f2, inc);
895 <        f.completeExceptionally(new CFException());
896 <        f2.complete(one);
897 <        checkCompletedWithWrappedCFException(g);
898 <
899 <        f = new CompletableFuture<Integer>();
900 <        f2 = new CompletableFuture<Integer>();
901 <        f2.completeExceptionally(new CFException());
902 <        g = f.applyToEither(f2, inc);
903 <        checkCompletedWithWrappedCFException(g);
904 <    }
891 >    public void testHandle_exceptionalCompletion() {
892 >        for (ExecutionMode m : ExecutionMode.values())
893 >        for (boolean createIncomplete : new boolean[] { true, false })
894 >        for (Integer v1 : new Integer[] { 1, null })
895 >    {
896 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
897 >        final AtomicInteger a = new AtomicInteger(0);
898 >        final CFException ex = new CFException();
899 >        if (!createIncomplete) f.completeExceptionally(ex);
900 >        final CompletableFuture<Integer> g = m.handle
901 >            (f,
902 >             (Integer x, Throwable t) -> {
903 >                m.checkExecutionMode();
904 >                threadAssertNull(x);
905 >                threadAssertSame(t, ex);
906 >                a.getAndIncrement();
907 >                return v1;
908 >            });
909 >        if (createIncomplete) f.completeExceptionally(ex);
910 >
911 >        checkCompletedNormally(g, v1);
912 >        checkCompletedWithWrappedCFException(f, ex);
913 >        assertEquals(1, a.get());
914 >    }}
915 >
916 >    /**
917 >     * handle action completes normally with function value on
918 >     * cancelled source
919 >     */
920 >    public void testHandle_sourceCancelled() {
921 >        for (ExecutionMode m : ExecutionMode.values())
922 >        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
923 >        for (boolean createIncomplete : new boolean[] { true, false })
924 >        for (Integer v1 : new Integer[] { 1, null })
925 >    {
926 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
927 >        final AtomicInteger a = new AtomicInteger(0);
928 >        if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
929 >        final CompletableFuture<Integer> g = m.handle
930 >            (f,
931 >             (Integer x, Throwable t) -> {
932 >                m.checkExecutionMode();
933 >                threadAssertNull(x);
934 >                threadAssertTrue(t instanceof CancellationException);
935 >                a.getAndIncrement();
936 >                return v1;
937 >            });
938 >        if (createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
939  
940 <    /**
941 <     * applyToEither result completes exceptionally if action does
942 <     */
943 <    public void testApplyToEither3() {
899 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
900 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
901 <        FailingFunction r = new FailingFunction();
902 <        CompletableFuture<Integer> g = f.applyToEither(f2, r);
903 <        f2.complete(two);
904 <        checkCompletedWithWrappedCFException(g);
905 <    }
940 >        checkCompletedNormally(g, v1);
941 >        checkCancelled(f);
942 >        assertEquals(1, a.get());
943 >    }}
944  
945      /**
946 <     * applyToEither result completes exceptionally if either source cancelled
946 >     * handle result completes exceptionally if action does
947       */
948 <    public void testApplyToEither4() {
949 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
950 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
951 <        CompletableFuture<Integer> g = f.applyToEither(f2, inc);
952 <        assertTrue(f.cancel(true));
953 <        checkCompletedWithWrappedCancellationException(g);
954 <        f = new CompletableFuture<Integer>();
955 <        f2 = new CompletableFuture<Integer>();
956 <        assertTrue(f2.cancel(true));
957 <        checkCompletedWithWrappedCancellationException(g);
958 <    }
948 >    public void testHandle_sourceFailedActionFailed() {
949 >        for (ExecutionMode m : ExecutionMode.values())
950 >        for (boolean createIncomplete : new boolean[] { true, false })
951 >    {
952 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
953 >        final AtomicInteger a = new AtomicInteger(0);
954 >        final CFException ex1 = new CFException();
955 >        final CFException ex2 = new CFException();
956 >        if (!createIncomplete) f.completeExceptionally(ex1);
957 >        final CompletableFuture<Integer> g = m.handle
958 >            (f,
959 >             (Integer x, Throwable t) -> {
960 >                m.checkExecutionMode();
961 >                threadAssertNull(x);
962 >                threadAssertSame(ex1, t);
963 >                a.getAndIncrement();
964 >                throw ex2;
965 >            });
966 >        if (createIncomplete) f.completeExceptionally(ex1);
967 >
968 >        checkCompletedWithWrappedCFException(g, ex2);
969 >        checkCompletedWithWrappedCFException(f, ex1);
970 >        assertEquals(1, a.get());
971 >    }}
972 >
973 >    public void testHandle_sourceCompletedNormallyActionFailed() {
974 >        for (ExecutionMode m : ExecutionMode.values())
975 >        for (boolean createIncomplete : new boolean[] { true, false })
976 >        for (Integer v1 : new Integer[] { 1, null })
977 >    {
978 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
979 >        final AtomicInteger a = new AtomicInteger(0);
980 >        final CFException ex = new CFException();
981 >        if (!createIncomplete) f.complete(v1);
982 >        final CompletableFuture<Integer> g = m.handle
983 >            (f,
984 >             (Integer x, Throwable t) -> {
985 >                m.checkExecutionMode();
986 >                threadAssertSame(x, v1);
987 >                threadAssertNull(t);
988 >                a.getAndIncrement();
989 >                throw ex;
990 >            });
991 >        if (createIncomplete) f.complete(v1);
992 >
993 >        checkCompletedWithWrappedCFException(g, ex);
994 >        checkCompletedNormally(f, v1);
995 >        assertEquals(1, a.get());
996 >    }}
997  
998      /**
999 <     * acceptEither result completes normally after normal completion
924 <     * of either source
999 >     * runAsync completes after running Runnable
1000       */
1001 <    public void testAcceptEither() {
1002 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1003 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1004 <        IncAction r = new IncAction();
1005 <        CompletableFuture<Void> g = f.acceptEither(f2, r);
1006 <        f.complete(one);
1007 <        checkCompletedNormally(g, null);
1008 <        f2.complete(one);
1009 <        checkCompletedNormally(g, null);
1010 <        assertEquals(r.value, 2);
1011 <
1012 <        r = new IncAction();
1013 <        f = new CompletableFuture<Integer>();
939 <        f.complete(one);
940 <        f2 = new CompletableFuture<Integer>();
941 <        g = f.acceptEither(f2, r);
942 <        checkCompletedNormally(g, null);
943 <        assertEquals(r.value, 2);
944 <    }
1001 >    public void testRunAsync_normalCompletion() {
1002 >        ExecutionMode[] executionModes = {
1003 >            ExecutionMode.ASYNC,
1004 >            ExecutionMode.EXECUTOR,
1005 >        };
1006 >        for (ExecutionMode m : executionModes)
1007 >    {
1008 >        final Noop r = new Noop(m);
1009 >        final CompletableFuture<Void> f = m.runAsync(r);
1010 >        assertNull(f.join());
1011 >        checkCompletedNormally(f, null);
1012 >        r.assertInvoked();
1013 >    }}
1014  
1015      /**
1016 <     * acceptEither result completes exceptionally after exceptional
948 <     * completion of either source
1016 >     * failing runAsync completes exceptionally after running Runnable
1017       */
1018 <    public void testAcceptEither2() {
1019 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1020 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1021 <        IncAction r = new IncAction();
1022 <        CompletableFuture<Void> g = f.acceptEither(f2, r);
1023 <        f.completeExceptionally(new CFException());
1024 <        f2.complete(one);
1025 <        checkCompletedWithWrappedCFException(g);
1026 <
1027 <        r = new IncAction();
1028 <        f = new CompletableFuture<Integer>();
1029 <        f2 = new CompletableFuture<Integer>();
962 <        f2.completeExceptionally(new CFException());
963 <        g = f.acceptEither(f2, r);
964 <        checkCompletedWithWrappedCFException(g);
965 <    }
1018 >    public void testRunAsync_exceptionalCompletion() {
1019 >        ExecutionMode[] executionModes = {
1020 >            ExecutionMode.ASYNC,
1021 >            ExecutionMode.EXECUTOR,
1022 >        };
1023 >        for (ExecutionMode m : executionModes)
1024 >    {
1025 >        final FailingRunnable r = new FailingRunnable(m);
1026 >        final CompletableFuture<Void> f = m.runAsync(r);
1027 >        checkCompletedWithWrappedCFException(f);
1028 >        r.assertInvoked();
1029 >    }}
1030  
1031      /**
1032 <     * acceptEither result completes exceptionally if action does
1032 >     * supplyAsync completes with result of supplier
1033       */
1034 <    public void testAcceptEither3() {
1035 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1036 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1037 <        FailingConsumer r = new FailingConsumer();
1038 <        CompletableFuture<Void> g = f.acceptEither(f2, r);
1039 <        f2.complete(two);
1040 <        checkCompletedWithWrappedCFException(g);
1041 <    }
1034 >    public void testSupplyAsync_normalCompletion() {
1035 >        ExecutionMode[] executionModes = {
1036 >            ExecutionMode.ASYNC,
1037 >            ExecutionMode.EXECUTOR,
1038 >        };
1039 >        for (ExecutionMode m : executionModes)
1040 >        for (Integer v1 : new Integer[] { 1, null })
1041 >    {
1042 >        final IntegerSupplier r = new IntegerSupplier(m, v1);
1043 >        final CompletableFuture<Integer> f = m.supplyAsync(r);
1044 >        assertSame(v1, f.join());
1045 >        checkCompletedNormally(f, v1);
1046 >        r.assertInvoked();
1047 >    }}
1048  
1049      /**
1050 <     * acceptEither result completes exceptionally if either source cancelled
1050 >     * Failing supplyAsync completes exceptionally
1051       */
1052 <    public void testAcceptEither4() {
1053 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1054 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1055 <        IncAction r = new IncAction();
1056 <        CompletableFuture<Void> g = f.acceptEither(f2, r);
1057 <        assertTrue(f.cancel(true));
1058 <        checkCompletedWithWrappedCancellationException(g);
1059 <        f = new CompletableFuture<Integer>();
1060 <        f2 = new CompletableFuture<Integer>();
1061 <        assertTrue(f2.cancel(true));
1062 <        checkCompletedWithWrappedCancellationException(g);
1063 <    }
1052 >    public void testSupplyAsync_exceptionalCompletion() {
1053 >        ExecutionMode[] executionModes = {
1054 >            ExecutionMode.ASYNC,
1055 >            ExecutionMode.EXECUTOR,
1056 >        };
1057 >        for (ExecutionMode m : executionModes)
1058 >    {
1059 >        FailingSupplier r = new FailingSupplier(m);
1060 >        CompletableFuture<Integer> f = m.supplyAsync(r);
1061 >        checkCompletedWithWrappedCFException(f);
1062 >        r.assertInvoked();
1063 >    }}
1064  
1065 +    // seq completion methods
1066  
1067      /**
1068 <     * runAfterEither result completes normally after normal completion
998 <     * of either source
1068 >     * thenRun result completes normally after normal completion of source
1069       */
1070 <    public void testRunAfterEither() {
1071 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1072 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1073 <        Noop r = new Noop();
1074 <        CompletableFuture<Void> g = f.runAfterEither(f2, r);
1075 <        f.complete(one);
1076 <        checkCompletedNormally(g, null);
1077 <        f2.complete(one);
1078 <        checkCompletedNormally(g, null);
1079 <        assertTrue(r.ran);
1070 >    public void testThenRun_normalCompletion() {
1071 >        for (ExecutionMode m : ExecutionMode.values())
1072 >        for (boolean createIncomplete : new boolean[] { true, false })
1073 >        for (Integer v1 : new Integer[] { 1, null })
1074 >    {
1075 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1076 >        final Noop r = new Noop(m);
1077 >        if (!createIncomplete) f.complete(v1);
1078 >        final CompletableFuture<Void> g = m.thenRun(f, r);
1079 >        if (createIncomplete) {
1080 >            checkIncomplete(g);
1081 >            f.complete(v1);
1082 >        }
1083  
1011        r = new Noop();
1012        f = new CompletableFuture<Integer>();
1013        f.complete(one);
1014        f2 = new CompletableFuture<Integer>();
1015        g = f.runAfterEither(f2, r);
1084          checkCompletedNormally(g, null);
1085 <        assertTrue(r.ran);
1086 <    }
1087 <
1020 <    /**
1021 <     * runAfterEither result completes exceptionally after exceptional
1022 <     * completion of either source
1023 <     */
1024 <    public void testRunAfterEither2() {
1025 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1026 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1027 <        Noop r = new Noop();
1028 <        CompletableFuture<Void> g = f.runAfterEither(f2, r);
1029 <        f.completeExceptionally(new CFException());
1030 <        f2.complete(one);
1031 <        checkCompletedWithWrappedCFException(g);
1032 <
1033 <        r = new Noop();
1034 <        f = new CompletableFuture<Integer>();
1035 <        f2 = new CompletableFuture<Integer>();
1036 <        f2.completeExceptionally(new CFException());
1037 <        g = f.runAfterEither(f2, r);
1038 <        checkCompletedWithWrappedCFException(g);
1039 <    }
1085 >        checkCompletedNormally(f, v1);
1086 >        r.assertInvoked();
1087 >    }}
1088  
1089      /**
1090 <     * runAfterEither result completes exceptionally if action does
1043 <     */
1044 <    public void testRunAfterEither3() {
1045 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1046 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1047 <        FailingNoop r = new FailingNoop();
1048 <        CompletableFuture<Void> g = f.runAfterEither(f2, r);
1049 <        f2.complete(two);
1050 <        checkCompletedWithWrappedCFException(g);
1051 <    }
1052 <
1053 <    /**
1054 <     * runAfterEither result completes exceptionally if either source cancelled
1055 <     */
1056 <    public void testRunAfterEither4() {
1057 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1058 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1059 <        Noop r = new Noop();
1060 <        CompletableFuture<Void> g = f.runAfterEither(f2, r);
1061 <        assertTrue(f.cancel(true));
1062 <        checkCompletedWithWrappedCancellationException(g);
1063 <        f = new CompletableFuture<Integer>();
1064 <        f2 = new CompletableFuture<Integer>();
1065 <        assertTrue(f2.cancel(true));
1066 <        checkCompletedWithWrappedCancellationException(g);
1067 <    }
1068 <
1069 <    /**
1070 <     * thenCompose result completes normally after normal completion of source
1071 <     */
1072 <    public void testThenCompose() {
1073 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1074 <        CompletableFutureInc r = new CompletableFutureInc();
1075 <        CompletableFuture<Integer> g = f.thenCompose(r);
1076 <        f.complete(one);
1077 <        checkCompletedNormally(g, two);
1078 <    }
1079 <
1080 <    /**
1081 <     * thenCompose result completes exceptionally after exceptional
1090 >     * thenRun result completes exceptionally after exceptional
1091       * completion of source
1092       */
1093 <    public void testThenCompose2() {
1094 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1095 <        CompletableFutureInc r = new CompletableFutureInc();
1096 <        CompletableFuture<Integer> g = f.thenCompose(r);
1097 <        f.completeExceptionally(new CFException());
1098 <        checkCompletedWithWrappedCFException(g);
1099 <    }
1100 <
1101 <    /**
1102 <     * thenCompose result completes exceptionally if action does
1103 <     */
1104 <    public void testThenCompose3() {
1105 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1097 <        FailingCompletableFutureFunction r = new FailingCompletableFutureFunction();
1098 <        CompletableFuture<Integer> g = f.thenCompose(r);
1099 <        f.complete(one);
1100 <        checkCompletedWithWrappedCFException(g);
1101 <    }
1102 <
1103 <    /**
1104 <     * thenCompose result completes exceptionally if source cancelled
1105 <     */
1106 <    public void testThenCompose4() {
1107 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1108 <        CompletableFutureInc r = new CompletableFutureInc();
1109 <        CompletableFuture<Integer> g = f.thenCompose(r);
1110 <        assertTrue(f.cancel(true));
1111 <        checkCompletedWithWrappedCancellationException(g);
1112 <    }
1113 <
1114 <
1115 <    // asyncs
1116 <
1117 <    /**
1118 <     * thenRunAsync result completes normally after normal completion of source
1119 <     */
1120 <    public void testThenRunAsync() {
1121 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1122 <        Noop r = new Noop();
1123 <        CompletableFuture<Void> g = f.thenRunAsync(r);
1124 <        f.complete(null);
1125 <        checkCompletedNormally(g, null);
1093 >    public void testThenRun_exceptionalCompletion() {
1094 >        for (ExecutionMode m : ExecutionMode.values())
1095 >        for (boolean createIncomplete : new boolean[] { true, false })
1096 >    {
1097 >        final CFException ex = new CFException();
1098 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1099 >        final Noop r = new Noop(m);
1100 >        if (!createIncomplete) f.completeExceptionally(ex);
1101 >        final CompletableFuture<Void> g = m.thenRun(f, r);
1102 >        if (createIncomplete) {
1103 >            checkIncomplete(g);
1104 >            f.completeExceptionally(ex);
1105 >        }
1106  
1107 <        // reordered version
1108 <        f = new CompletableFuture<Integer>();
1109 <        f.complete(null);
1110 <        r = new Noop();
1131 <        g = f.thenRunAsync(r);
1132 <        checkCompletedNormally(g, null);
1133 <    }
1107 >        checkCompletedWithWrappedCFException(g, ex);
1108 >        checkCompletedWithWrappedCFException(f, ex);
1109 >        r.assertNotInvoked();
1110 >    }}
1111  
1112      /**
1113 <     * thenRunAsync result completes exceptionally after exceptional
1137 <     * completion of source
1113 >     * thenRun result completes exceptionally if source cancelled
1114       */
1115 <    public void testThenRunAsync2() {
1116 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1117 <        Noop r = new Noop();
1118 <        CompletableFuture<Void> g = f.thenRunAsync(r);
1119 <        f.completeExceptionally(new CFException());
1120 <        try {
1121 <            g.join();
1122 <            shouldThrow();
1123 <        } catch (Exception ok) {
1115 >    public void testThenRun_sourceCancelled() {
1116 >        for (ExecutionMode m : ExecutionMode.values())
1117 >        for (boolean createIncomplete : new boolean[] { true, false })
1118 >        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1119 >    {
1120 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1121 >        final Noop r = new Noop(m);
1122 >        if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
1123 >        final CompletableFuture<Void> g = m.thenRun(f, r);
1124 >        if (createIncomplete) {
1125 >            checkIncomplete(g);
1126 >            assertTrue(f.cancel(mayInterruptIfRunning));
1127          }
1149        checkCompletedWithWrappedCFException(g);
1150    }
1151
1152    /**
1153     * thenRunAsync result completes exceptionally if action does
1154     */
1155    public void testThenRunAsync3() {
1156        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1157        FailingNoop r = new FailingNoop();
1158        CompletableFuture<Void> g = f.thenRunAsync(r);
1159        f.complete(null);
1160        checkCompletedWithWrappedCFException(g);
1161    }
1128  
1163    /**
1164     * thenRunAsync result completes exceptionally if source cancelled
1165     */
1166    public void testThenRunAsync4() {
1167        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1168        Noop r = new Noop();
1169        CompletableFuture<Void> g = f.thenRunAsync(r);
1170        assertTrue(f.cancel(true));
1129          checkCompletedWithWrappedCancellationException(g);
1130 <    }
1130 >        checkCancelled(f);
1131 >        r.assertNotInvoked();
1132 >    }}
1133  
1134      /**
1135 <     * thenApplyAsync result completes normally after normal completion of source
1135 >     * thenRun result completes exceptionally if action does
1136       */
1137 <    public void testThenApplyAsync() {
1138 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1139 <        CompletableFuture<Integer> g = f.thenApplyAsync(inc);
1140 <        f.complete(one);
1141 <        checkCompletedNormally(g, two);
1142 <    }
1137 >    public void testThenRun_actionFailed() {
1138 >        for (ExecutionMode m : ExecutionMode.values())
1139 >        for (boolean createIncomplete : new boolean[] { true, false })
1140 >        for (Integer v1 : new Integer[] { 1, null })
1141 >    {
1142 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1143 >        final FailingRunnable r = new FailingRunnable(m);
1144 >        if (!createIncomplete) f.complete(v1);
1145 >        final CompletableFuture<Void> g = m.thenRun(f, r);
1146 >        if (createIncomplete) {
1147 >            checkIncomplete(g);
1148 >            f.complete(v1);
1149 >        }
1150  
1184    /**
1185     * thenApplyAsync result completes exceptionally after exceptional
1186     * completion of source
1187     */
1188    public void testThenApplyAsync2() {
1189        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1190        CompletableFuture<Integer> g = f.thenApplyAsync(inc);
1191        f.completeExceptionally(new CFException());
1151          checkCompletedWithWrappedCFException(g);
1152 <    }
1152 >        checkCompletedNormally(f, v1);
1153 >    }}
1154  
1155      /**
1156 <     * thenApplyAsync result completes exceptionally if action does
1156 >     * thenApply result completes normally after normal completion of source
1157       */
1158 <    public void testThenApplyAsync3() {
1159 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1160 <        FailingFunction r = new FailingFunction();
1161 <        CompletableFuture<Integer> g = f.thenApplyAsync(r);
1162 <        f.complete(null);
1163 <        checkCompletedWithWrappedCFException(g);
1164 <    }
1158 >    public void testThenApply_normalCompletion() {
1159 >        for (ExecutionMode m : ExecutionMode.values())
1160 >        for (boolean createIncomplete : new boolean[] { true, false })
1161 >        for (Integer v1 : new Integer[] { 1, null })
1162 >    {
1163 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1164 >        final IncFunction r = new IncFunction(m);
1165 >        if (!createIncomplete) f.complete(v1);
1166 >        final CompletableFuture<Integer> g = m.thenApply(f, r);
1167 >        if (createIncomplete) {
1168 >            checkIncomplete(g);
1169 >            f.complete(v1);
1170 >        }
1171  
1172 <    /**
1173 <     * thenApplyAsync result completes exceptionally if source cancelled
1174 <     */
1175 <    public void testThenApplyAsync4() {
1210 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1211 <        CompletableFuture<Integer> g = f.thenApplyAsync(inc);
1212 <        assertTrue(f.cancel(true));
1213 <        checkCompletedWithWrappedCancellationException(g);
1214 <    }
1172 >        checkCompletedNormally(g, inc(v1));
1173 >        checkCompletedNormally(f, v1);
1174 >        r.assertValue(inc(v1));
1175 >    }}
1176  
1177      /**
1178 <     * thenAcceptAsync result completes normally after normal
1178 >     * thenApply result completes exceptionally after exceptional
1179       * completion of source
1180       */
1181 <    public void testThenAcceptAsync() {
1182 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1183 <        IncAction r = new IncAction();
1184 <        CompletableFuture<Void> g = f.thenAcceptAsync(r);
1185 <        f.complete(one);
1186 <        checkCompletedNormally(g, null);
1187 <        assertEquals(r.value, 2);
1188 <    }
1181 >    public void testThenApply_exceptionalCompletion() {
1182 >        for (ExecutionMode m : ExecutionMode.values())
1183 >        for (boolean createIncomplete : new boolean[] { true, false })
1184 >    {
1185 >        final CFException ex = new CFException();
1186 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1187 >        final IncFunction r = new IncFunction(m);
1188 >        if (!createIncomplete) f.completeExceptionally(ex);
1189 >        final CompletableFuture<Integer> g = m.thenApply(f, r);
1190 >        if (createIncomplete) {
1191 >            checkIncomplete(g);
1192 >            f.completeExceptionally(ex);
1193 >        }
1194  
1195 <    /**
1196 <     * thenAcceptAsync result completes exceptionally after exceptional
1197 <     * completion of source
1198 <     */
1233 <    public void testThenAcceptAsync2() {
1234 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1235 <        IncAction r = new IncAction();
1236 <        CompletableFuture<Void> g = f.thenAcceptAsync(r);
1237 <        f.completeExceptionally(new CFException());
1238 <        checkCompletedWithWrappedCFException(g);
1239 <    }
1195 >        checkCompletedWithWrappedCFException(g, ex);
1196 >        checkCompletedWithWrappedCFException(f, ex);
1197 >        r.assertNotInvoked();
1198 >    }}
1199  
1200      /**
1201 <     * thenAcceptAsync result completes exceptionally if action does
1201 >     * thenApply result completes exceptionally if source cancelled
1202       */
1203 <    public void testThenAcceptAsync3() {
1204 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1205 <        FailingConsumer r = new FailingConsumer();
1206 <        CompletableFuture<Void> g = f.thenAcceptAsync(r);
1207 <        f.complete(null);
1208 <        checkCompletedWithWrappedCFException(g);
1209 <    }
1203 >    public void testThenApply_sourceCancelled() {
1204 >        for (ExecutionMode m : ExecutionMode.values())
1205 >        for (boolean createIncomplete : new boolean[] { true, false })
1206 >        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1207 >    {
1208 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1209 >        final IncFunction r = new IncFunction(m);
1210 >        if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
1211 >        final CompletableFuture<Integer> g = m.thenApply(f, r);
1212 >        if (createIncomplete) {
1213 >            checkIncomplete(g);
1214 >            assertTrue(f.cancel(mayInterruptIfRunning));
1215 >        }
1216  
1252    /**
1253     * thenAcceptAsync result completes exceptionally if source cancelled
1254     */
1255    public void testThenAcceptAsync4() {
1256        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1257        IncAction r = new IncAction();
1258        CompletableFuture<Void> g = f.thenAcceptAsync(r);
1259        assertTrue(f.cancel(true));
1217          checkCompletedWithWrappedCancellationException(g);
1218 <    }
1219 <    /**
1220 <     * thenCombineAsync result completes normally after normal
1264 <     * completion of sources
1265 <     */
1266 <    public void testThenCombineAsync() {
1267 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1268 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1269 <        CompletableFuture<Integer> g = f.thenCombineAsync(f2, add);
1270 <        f.complete(one);
1271 <        checkIncomplete(g);
1272 <        f2.complete(two);
1273 <        checkCompletedNormally(g, three);
1274 <    }
1218 >        checkCancelled(f);
1219 >        r.assertNotInvoked();
1220 >    }}
1221  
1222      /**
1223 <     * thenCombineAsync result completes exceptionally after exceptional
1278 <     * completion of source
1223 >     * thenApply result completes exceptionally if action does
1224       */
1225 <    public void testThenCombineAsync2() {
1226 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1227 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1228 <        CompletableFuture<Integer> g = f.thenCombineAsync(f2, add);
1229 <        f.completeExceptionally(new CFException());
1230 <        f2.complete(two);
1231 <        checkCompletedWithWrappedCFException(g);
1232 <
1233 <        f = new CompletableFuture<Integer>();
1234 <        f2 = new CompletableFuture<Integer>();
1235 <        g = f.thenCombineAsync(f2, add);
1236 <        f.complete(one);
1237 <        f2.completeExceptionally(new CFException());
1293 <        checkCompletedWithWrappedCFException(g);
1294 <    }
1225 >    public void testThenApply_actionFailed() {
1226 >        for (ExecutionMode m : ExecutionMode.values())
1227 >        for (boolean createIncomplete : new boolean[] { true, false })
1228 >        for (Integer v1 : new Integer[] { 1, null })
1229 >    {
1230 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1231 >        final FailingFunction r = new FailingFunction(m);
1232 >        if (!createIncomplete) f.complete(v1);
1233 >        final CompletableFuture<Integer> g = m.thenApply(f, r);
1234 >        if (createIncomplete) {
1235 >            checkIncomplete(g);
1236 >            f.complete(v1);
1237 >        }
1238  
1296    /**
1297     * thenCombineAsync result completes exceptionally if action does
1298     */
1299    public void testThenCombineAsync3() {
1300        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1301        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1302        FailingBiFunction r = new FailingBiFunction();
1303        CompletableFuture<Integer> g = f.thenCombineAsync(f2, r);
1304        f.complete(one);
1305        checkIncomplete(g);
1306        f2.complete(two);
1239          checkCompletedWithWrappedCFException(g);
1240 <    }
1240 >        checkCompletedNormally(f, v1);
1241 >    }}
1242  
1243      /**
1244 <     * thenCombineAsync result completes exceptionally if either source cancelled
1244 >     * thenAccept result completes normally after normal completion of source
1245       */
1246 <    public void testThenCombineAsync4() {
1247 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1248 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1249 <        CompletableFuture<Integer> g = f.thenCombineAsync(f2, add);
1250 <        assertTrue(f.cancel(true));
1251 <        f2.complete(two);
1252 <        checkCompletedWithWrappedCancellationException(g);
1253 <
1254 <        f = new CompletableFuture<Integer>();
1255 <        f2 = new CompletableFuture<Integer>();
1256 <        g = f.thenCombineAsync(f2, add);
1257 <        f.complete(one);
1258 <        assertTrue(f2.cancel(true));
1326 <        checkCompletedWithWrappedCancellationException(g);
1327 <    }
1246 >    public void testThenAccept_normalCompletion() {
1247 >        for (ExecutionMode m : ExecutionMode.values())
1248 >        for (boolean createIncomplete : new boolean[] { true, false })
1249 >        for (Integer v1 : new Integer[] { 1, null })
1250 >    {
1251 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1252 >        final NoopConsumer r = new NoopConsumer(m);
1253 >        if (!createIncomplete) f.complete(v1);
1254 >        final CompletableFuture<Void> g = m.thenAccept(f, r);
1255 >        if (createIncomplete) {
1256 >            checkIncomplete(g);
1257 >            f.complete(v1);
1258 >        }
1259  
1329    /**
1330     * thenAcceptBothAsync result completes normally after normal
1331     * completion of sources
1332     */
1333    public void testThenAcceptBothAsync() {
1334        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1335        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1336        AddAction r = new AddAction();
1337        CompletableFuture<Void> g = f.thenAcceptBothAsync(f2, r);
1338        f.complete(one);
1339        checkIncomplete(g);
1340        f2.complete(two);
1260          checkCompletedNormally(g, null);
1261 <        assertEquals(r.value, 3);
1262 <    }
1261 >        r.assertValue(v1);
1262 >        checkCompletedNormally(f, v1);
1263 >    }}
1264  
1265      /**
1266 <     * thenAcceptBothAsync result completes exceptionally after exceptional
1266 >     * thenAccept result completes exceptionally after exceptional
1267       * completion of source
1268       */
1269 <    public void testThenAcceptBothAsync2() {
1270 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1271 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1272 <        AddAction r = new AddAction();
1273 <        CompletableFuture<Void> g = f.thenAcceptBothAsync(f2, r);
1274 <        f.completeExceptionally(new CFException());
1275 <        f2.complete(two);
1276 <        checkCompletedWithWrappedCFException(g);
1269 >    public void testThenAccept_exceptionalCompletion() {
1270 >        for (ExecutionMode m : ExecutionMode.values())
1271 >        for (boolean createIncomplete : new boolean[] { true, false })
1272 >    {
1273 >        final CFException ex = new CFException();
1274 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1275 >        final NoopConsumer r = new NoopConsumer(m);
1276 >        if (!createIncomplete) f.completeExceptionally(ex);
1277 >        final CompletableFuture<Void> g = m.thenAccept(f, r);
1278 >        if (createIncomplete) {
1279 >            checkIncomplete(g);
1280 >            f.completeExceptionally(ex);
1281 >        }
1282  
1283 <        r = new AddAction();
1284 <        f = new CompletableFuture<Integer>();
1285 <        f2 = new CompletableFuture<Integer>();
1286 <        g = f.thenAcceptBothAsync(f2, r);
1362 <        f.complete(one);
1363 <        f2.completeExceptionally(new CFException());
1364 <        checkCompletedWithWrappedCFException(g);
1365 <    }
1283 >        checkCompletedWithWrappedCFException(g, ex);
1284 >        checkCompletedWithWrappedCFException(f, ex);
1285 >        r.assertNotInvoked();
1286 >    }}
1287  
1288      /**
1289 <     * thenAcceptBothAsync result completes exceptionally if action does
1369 <     */
1370 <    public void testThenAcceptBothAsync3() {
1371 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1372 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1373 <        FailingBiConsumer r = new FailingBiConsumer();
1374 <        CompletableFuture<Void> g = f.thenAcceptBothAsync(f2, r);
1375 <        f.complete(one);
1376 <        checkIncomplete(g);
1377 <        f2.complete(two);
1378 <        checkCompletedWithWrappedCFException(g);
1379 <    }
1380 <
1381 <    /**
1382 <     * thenAcceptBothAsync result completes exceptionally if either source cancelled
1289 >     * thenAccept result completes exceptionally if source cancelled
1290       */
1291 <    public void testThenAcceptBothAsync4() {
1292 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1293 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1294 <        AddAction r = new AddAction();
1295 <        CompletableFuture<Void> g = f.thenAcceptBothAsync(f2, r);
1296 <        assertTrue(f.cancel(true));
1297 <        f2.complete(two);
1298 <        checkCompletedWithWrappedCancellationException(g);
1291 >    public void testThenAccept_sourceCancelled() {
1292 >        for (ExecutionMode m : ExecutionMode.values())
1293 >        for (boolean createIncomplete : new boolean[] { true, false })
1294 >        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1295 >    {
1296 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1297 >        final NoopConsumer r = new NoopConsumer(m);
1298 >        if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
1299 >        final CompletableFuture<Void> g = m.thenAccept(f, r);
1300 >        if (createIncomplete) {
1301 >            checkIncomplete(g);
1302 >            assertTrue(f.cancel(mayInterruptIfRunning));
1303 >        }
1304  
1393        r = new AddAction();
1394        f = new CompletableFuture<Integer>();
1395        f2 = new CompletableFuture<Integer>();
1396        g = f.thenAcceptBothAsync(f2, r);
1397        f.complete(one);
1398        assertTrue(f2.cancel(true));
1305          checkCompletedWithWrappedCancellationException(g);
1306 <    }
1307 <
1308 <    /**
1403 <     * runAfterBothAsync result completes normally after normal
1404 <     * completion of sources
1405 <     */
1406 <    public void testRunAfterBothAsync() {
1407 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1408 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1409 <        Noop r = new Noop();
1410 <        CompletableFuture<Void> g = f.runAfterBothAsync(f2, r);
1411 <        f.complete(one);
1412 <        checkIncomplete(g);
1413 <        f2.complete(two);
1414 <        checkCompletedNormally(g, null);
1415 <        assertTrue(r.ran);
1416 <    }
1306 >        checkCancelled(f);
1307 >        r.assertNotInvoked();
1308 >    }}
1309  
1310      /**
1311 <     * runAfterBothAsync result completes exceptionally after exceptional
1420 <     * completion of source
1311 >     * thenAccept result completes exceptionally if action does
1312       */
1313 <    public void testRunAfterBothAsync2() {
1314 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1315 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1316 <        Noop r = new Noop();
1317 <        CompletableFuture<Void> g = f.runAfterBothAsync(f2, r);
1318 <        f.completeExceptionally(new CFException());
1319 <        f2.complete(two);
1320 <        checkCompletedWithWrappedCFException(g);
1321 <
1322 <        r = new Noop();
1323 <        f = new CompletableFuture<Integer>();
1324 <        f2 = new CompletableFuture<Integer>();
1325 <        g = f.runAfterBothAsync(f2, r);
1435 <        f.complete(one);
1436 <        f2.completeExceptionally(new CFException());
1437 <        checkCompletedWithWrappedCFException(g);
1438 <    }
1313 >    public void testThenAccept_actionFailed() {
1314 >        for (ExecutionMode m : ExecutionMode.values())
1315 >        for (boolean createIncomplete : new boolean[] { true, false })
1316 >        for (Integer v1 : new Integer[] { 1, null })
1317 >    {
1318 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1319 >        final FailingConsumer r = new FailingConsumer(m);
1320 >        if (!createIncomplete) f.complete(v1);
1321 >        final CompletableFuture<Void> g = m.thenAccept(f, r);
1322 >        if (createIncomplete) {
1323 >            checkIncomplete(g);
1324 >            f.complete(v1);
1325 >        }
1326  
1440    /**
1441     * runAfterBothAsync result completes exceptionally if action does
1442     */
1443    public void testRunAfterBothAsync3() {
1444        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1445        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1446        FailingNoop r = new FailingNoop();
1447        CompletableFuture<Void> g = f.runAfterBothAsync(f2, r);
1448        f.complete(one);
1449        checkIncomplete(g);
1450        f2.complete(two);
1327          checkCompletedWithWrappedCFException(g);
1328 <    }
1328 >        checkCompletedNormally(f, v1);
1329 >    }}
1330  
1331      /**
1332 <     * runAfterBothAsync result completes exceptionally if either source cancelled
1332 >     * thenCombine result completes normally after normal completion
1333 >     * of sources
1334       */
1335 <    public void testRunAfterBothAsync4() {
1336 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1337 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1338 <        Noop r = new Noop();
1339 <        CompletableFuture<Void> g = f.runAfterBothAsync(f2, r);
1340 <        assertTrue(f.cancel(true));
1341 <        f2.complete(two);
1342 <        checkCompletedWithWrappedCancellationException(g);
1335 >    public void testThenCombine_normalCompletion() {
1336 >        for (ExecutionMode m : ExecutionMode.values())
1337 >        for (boolean createIncomplete : new boolean[] { true, false })
1338 >        for (boolean fFirst : new boolean[] { true, false })
1339 >        for (Integer v1 : new Integer[] { 1, null })
1340 >        for (Integer v2 : new Integer[] { 2, null })
1341 >    {
1342 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1343 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
1344 >        final SubtractFunction r = new SubtractFunction(m);
1345 >
1346 >        if (fFirst) f.complete(v1); else g.complete(v2);
1347 >        if (!createIncomplete)
1348 >            if (!fFirst) f.complete(v1); else g.complete(v2);
1349 >        final CompletableFuture<Integer> h = m.thenCombine(f, g, r);
1350 >        if (createIncomplete) {
1351 >            checkIncomplete(h);
1352 >            r.assertNotInvoked();
1353 >            if (!fFirst) f.complete(v1); else g.complete(v2);
1354 >        }
1355  
1356 <        r = new Noop();
1357 <        f = new CompletableFuture<Integer>();
1358 <        f2 = new CompletableFuture<Integer>();
1359 <        g = f.runAfterBothAsync(f2, r);
1360 <        f.complete(one);
1471 <        assertTrue(f2.cancel(true));
1472 <        checkCompletedWithWrappedCancellationException(g);
1473 <    }
1356 >        checkCompletedNormally(h, subtract(v1, v2));
1357 >        checkCompletedNormally(f, v1);
1358 >        checkCompletedNormally(g, v2);
1359 >        r.assertValue(subtract(v1, v2));
1360 >    }}
1361  
1362      /**
1363 <     * applyToEitherAsync result completes normally after normal
1364 <     * completion of sources
1363 >     * thenCombine result completes exceptionally after exceptional
1364 >     * completion of either source
1365       */
1366 <    public void testApplyToEitherAsync() {
1367 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1368 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1369 <        CompletableFuture<Integer> g = f.applyToEitherAsync(f2, inc);
1370 <        f.complete(one);
1371 <        checkCompletedNormally(g, two);
1366 >    public void testThenCombine_exceptionalCompletion() {
1367 >        for (ExecutionMode m : ExecutionMode.values())
1368 >        for (boolean createIncomplete : new boolean[] { true, false })
1369 >        for (boolean fFirst : new boolean[] { true, false })
1370 >        for (Integer v1 : new Integer[] { 1, null })
1371 >    {
1372 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1373 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
1374 >        final CFException ex = new CFException();
1375 >        final SubtractFunction r = new SubtractFunction(m);
1376 >
1377 >        (fFirst ? f : g).complete(v1);
1378 >        if (!createIncomplete)
1379 >            (!fFirst ? f : g).completeExceptionally(ex);
1380 >        final CompletableFuture<Integer> h = m.thenCombine(f, g, r);
1381 >        if (createIncomplete) {
1382 >            checkIncomplete(h);
1383 >            (!fFirst ? f : g).completeExceptionally(ex);
1384 >        }
1385  
1386 <        f = new CompletableFuture<Integer>();
1387 <        f.complete(one);
1388 <        f2 = new CompletableFuture<Integer>();
1389 <        g = f.applyToEitherAsync(f2, inc);
1390 <        checkCompletedNormally(g, two);
1491 <    }
1386 >        checkCompletedWithWrappedCFException(h, ex);
1387 >        r.assertNotInvoked();
1388 >        checkCompletedNormally(fFirst ? f : g, v1);
1389 >        checkCompletedWithWrappedCFException(!fFirst ? f : g, ex);
1390 >    }}
1391  
1392      /**
1393 <     * applyToEitherAsync result completes exceptionally after exceptional
1495 <     * completion of source
1393 >     * thenCombine result completes exceptionally if either source cancelled
1394       */
1395 <    public void testApplyToEitherAsync2() {
1396 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1397 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1398 <        CompletableFuture<Integer> g = f.applyToEitherAsync(f2, inc);
1399 <        f.completeExceptionally(new CFException());
1400 <        checkCompletedWithWrappedCFException(g);
1395 >    public void testThenCombine_sourceCancelled() {
1396 >        for (ExecutionMode m : ExecutionMode.values())
1397 >        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1398 >        for (boolean createIncomplete : new boolean[] { true, false })
1399 >        for (boolean fFirst : new boolean[] { true, false })
1400 >        for (Integer v1 : new Integer[] { 1, null })
1401 >    {
1402 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1403 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
1404 >        final SubtractFunction r = new SubtractFunction(m);
1405 >
1406 >        (fFirst ? f : g).complete(v1);
1407 >        if (!createIncomplete)
1408 >            assertTrue((!fFirst ? f : g).cancel(mayInterruptIfRunning));
1409 >        final CompletableFuture<Integer> h = m.thenCombine(f, g, r);
1410 >        if (createIncomplete) {
1411 >            checkIncomplete(h);
1412 >            assertTrue((!fFirst ? f : g).cancel(mayInterruptIfRunning));
1413 >        }
1414  
1415 <        f = new CompletableFuture<Integer>();
1416 <        f2 = new CompletableFuture<Integer>();
1417 <        f2.completeExceptionally(new CFException());
1418 <        g = f.applyToEitherAsync(f2, inc);
1419 <        f.complete(one);
1509 <        checkCompletedWithWrappedCFException(g);
1510 <    }
1415 >        checkCompletedWithWrappedCancellationException(h);
1416 >        checkCancelled(!fFirst ? f : g);
1417 >        r.assertNotInvoked();
1418 >        checkCompletedNormally(fFirst ? f : g, v1);
1419 >    }}
1420  
1421      /**
1422 <     * applyToEitherAsync result completes exceptionally if action does
1514 <     */
1515 <    public void testApplyToEitherAsync3() {
1516 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1517 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1518 <        FailingFunction r = new FailingFunction();
1519 <        CompletableFuture<Integer> g = f.applyToEitherAsync(f2, r);
1520 <        f.complete(one);
1521 <        checkCompletedWithWrappedCFException(g);
1522 <    }
1523 <
1524 <    /**
1525 <     * applyToEitherAsync result completes exceptionally if either source cancelled
1422 >     * thenCombine result completes exceptionally if action does
1423       */
1424 <    public void testApplyToEitherAsync4() {
1425 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1426 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1427 <        CompletableFuture<Integer> g = f.applyToEitherAsync(f2, inc);
1428 <        assertTrue(f.cancel(true));
1429 <        checkCompletedWithWrappedCancellationException(g);
1424 >    public void testThenCombine_actionFailed() {
1425 >        for (ExecutionMode m : ExecutionMode.values())
1426 >        for (boolean fFirst : new boolean[] { true, false })
1427 >        for (Integer v1 : new Integer[] { 1, null })
1428 >        for (Integer v2 : new Integer[] { 2, null })
1429 >    {
1430 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1431 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
1432 >        final FailingBiFunction r = new FailingBiFunction(m);
1433 >        final CompletableFuture<Integer> h = m.thenCombine(f, g, r);
1434 >
1435 >        if (fFirst) {
1436 >            f.complete(v1);
1437 >            g.complete(v2);
1438 >        } else {
1439 >            g.complete(v2);
1440 >            f.complete(v1);
1441 >        }
1442  
1443 <        f = new CompletableFuture<Integer>();
1444 <        f2 = new CompletableFuture<Integer>();
1445 <        assertTrue(f2.cancel(true));
1446 <        g = f.applyToEitherAsync(f2, inc);
1538 <        checkCompletedWithWrappedCancellationException(g);
1539 <    }
1443 >        checkCompletedWithWrappedCFException(h);
1444 >        checkCompletedNormally(f, v1);
1445 >        checkCompletedNormally(g, v2);
1446 >    }}
1447  
1448      /**
1449 <     * acceptEitherAsync result completes normally after normal
1449 >     * thenAcceptBoth result completes normally after normal
1450       * completion of sources
1451       */
1452 <    public void testAcceptEitherAsync() {
1453 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1454 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1455 <        IncAction r = new IncAction();
1456 <        CompletableFuture<Void> g = f.acceptEitherAsync(f2, r);
1457 <        f.complete(one);
1458 <        checkCompletedNormally(g, null);
1459 <        assertEquals(r.value, 2);
1452 >    public void testThenAcceptBoth_normalCompletion() {
1453 >        for (ExecutionMode m : ExecutionMode.values())
1454 >        for (boolean createIncomplete : new boolean[] { true, false })
1455 >        for (boolean fFirst : new boolean[] { true, false })
1456 >        for (Integer v1 : new Integer[] { 1, null })
1457 >        for (Integer v2 : new Integer[] { 2, null })
1458 >    {
1459 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1460 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
1461 >        final SubtractAction r = new SubtractAction(m);
1462 >
1463 >        if (fFirst) f.complete(v1); else g.complete(v2);
1464 >        if (!createIncomplete)
1465 >            if (!fFirst) f.complete(v1); else g.complete(v2);
1466 >        final CompletableFuture<Void> h = m.thenAcceptBoth(f, g, r);
1467 >        if (createIncomplete) {
1468 >            checkIncomplete(h);
1469 >            r.assertNotInvoked();
1470 >            if (!fFirst) f.complete(v1); else g.complete(v2);
1471 >        }
1472  
1473 <        r = new IncAction();
1474 <        f = new CompletableFuture<Integer>();
1475 <        f.complete(one);
1476 <        f2 = new CompletableFuture<Integer>();
1477 <        g = f.acceptEitherAsync(f2, r);
1559 <        checkCompletedNormally(g, null);
1560 <        assertEquals(r.value, 2);
1561 <    }
1473 >        checkCompletedNormally(h, null);
1474 >        r.assertValue(subtract(v1, v2));
1475 >        checkCompletedNormally(f, v1);
1476 >        checkCompletedNormally(g, v2);
1477 >    }}
1478  
1479      /**
1480 <     * acceptEitherAsync result completes exceptionally after exceptional
1481 <     * completion of source
1480 >     * thenAcceptBoth result completes exceptionally after exceptional
1481 >     * completion of either source
1482       */
1483 <    public void testAcceptEitherAsync2() {
1484 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1485 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1486 <        IncAction r = new IncAction();
1487 <        CompletableFuture<Void> g = f.acceptEitherAsync(f2, r);
1488 <        f.completeExceptionally(new CFException());
1489 <        checkCompletedWithWrappedCFException(g);
1483 >    public void testThenAcceptBoth_exceptionalCompletion() {
1484 >        for (ExecutionMode m : ExecutionMode.values())
1485 >        for (boolean createIncomplete : new boolean[] { true, false })
1486 >        for (boolean fFirst : new boolean[] { true, false })
1487 >        for (Integer v1 : new Integer[] { 1, null })
1488 >    {
1489 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1490 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
1491 >        final CFException ex = new CFException();
1492 >        final SubtractAction r = new SubtractAction(m);
1493 >
1494 >        (fFirst ? f : g).complete(v1);
1495 >        if (!createIncomplete)
1496 >            (!fFirst ? f : g).completeExceptionally(ex);
1497 >        final CompletableFuture<Void> h = m.thenAcceptBoth(f, g, r);
1498 >        if (createIncomplete) {
1499 >            checkIncomplete(h);
1500 >            (!fFirst ? f : g).completeExceptionally(ex);
1501 >        }
1502  
1503 <        r = new IncAction();
1504 <        f = new CompletableFuture<Integer>();
1505 <        f2 = new CompletableFuture<Integer>();
1506 <        f2.completeExceptionally(new CFException());
1507 <        g = f.acceptEitherAsync(f2, r);
1580 <        f.complete(one);
1581 <        checkCompletedWithWrappedCFException(g);
1582 <    }
1503 >        checkCompletedWithWrappedCFException(h, ex);
1504 >        r.assertNotInvoked();
1505 >        checkCompletedNormally(fFirst ? f : g, v1);
1506 >        checkCompletedWithWrappedCFException(!fFirst ? f : g, ex);
1507 >    }}
1508  
1509      /**
1510 <     * acceptEitherAsync result completes exceptionally if action does
1510 >     * thenAcceptBoth result completes exceptionally if either source cancelled
1511       */
1512 <    public void testAcceptEitherAsync3() {
1513 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1514 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1515 <        FailingConsumer r = new FailingConsumer();
1516 <        CompletableFuture<Void> g = f.acceptEitherAsync(f2, r);
1517 <        f.complete(one);
1518 <        checkCompletedWithWrappedCFException(g);
1519 <    }
1512 >    public void testThenAcceptBoth_sourceCancelled() {
1513 >        for (ExecutionMode m : ExecutionMode.values())
1514 >        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1515 >        for (boolean createIncomplete : new boolean[] { true, false })
1516 >        for (boolean fFirst : new boolean[] { true, false })
1517 >        for (Integer v1 : new Integer[] { 1, null })
1518 >    {
1519 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1520 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
1521 >        final SubtractAction r = new SubtractAction(m);
1522 >
1523 >        (fFirst ? f : g).complete(v1);
1524 >        if (!createIncomplete)
1525 >            assertTrue((!fFirst ? f : g).cancel(mayInterruptIfRunning));
1526 >        final CompletableFuture<Void> h = m.thenAcceptBoth(f, g, r);
1527 >        if (createIncomplete) {
1528 >            checkIncomplete(h);
1529 >            assertTrue((!fFirst ? f : g).cancel(mayInterruptIfRunning));
1530 >        }
1531  
1532 <    /**
1533 <     * acceptEitherAsync result completes exceptionally if either
1534 <     * source cancelled
1535 <     */
1536 <    public void testAcceptEitherAsync4() {
1601 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1602 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1603 <        IncAction r = new IncAction();
1604 <        CompletableFuture<Void> g = f.acceptEitherAsync(f2, r);
1605 <        assertTrue(f.cancel(true));
1606 <        checkCompletedWithWrappedCancellationException(g);
1607 <
1608 <        r = new IncAction();
1609 <        f = new CompletableFuture<Integer>();
1610 <        f2 = new CompletableFuture<Integer>();
1611 <        assertTrue(f2.cancel(true));
1612 <        g = f.acceptEitherAsync(f2, r);
1613 <        checkCompletedWithWrappedCancellationException(g);
1614 <    }
1532 >        checkCompletedWithWrappedCancellationException(h);
1533 >        checkCancelled(!fFirst ? f : g);
1534 >        r.assertNotInvoked();
1535 >        checkCompletedNormally(fFirst ? f : g, v1);
1536 >    }}
1537  
1538      /**
1539 <     * runAfterEitherAsync result completes normally after normal
1618 <     * completion of sources
1539 >     * thenAcceptBoth result completes exceptionally if action does
1540       */
1541 <    public void testRunAfterEitherAsync() {
1542 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1543 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1544 <        Noop r = new Noop();
1545 <        CompletableFuture<Void> g = f.runAfterEitherAsync(f2, r);
1546 <        f.complete(one);
1547 <        checkCompletedNormally(g, null);
1548 <        assertTrue(r.ran);
1541 >    public void testThenAcceptBoth_actionFailed() {
1542 >        for (ExecutionMode m : ExecutionMode.values())
1543 >        for (boolean fFirst : new boolean[] { true, false })
1544 >        for (Integer v1 : new Integer[] { 1, null })
1545 >        for (Integer v2 : new Integer[] { 2, null })
1546 >    {
1547 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1548 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
1549 >        final FailingBiConsumer r = new FailingBiConsumer(m);
1550 >        final CompletableFuture<Void> h = m.thenAcceptBoth(f, g, r);
1551 >
1552 >        if (fFirst) {
1553 >            f.complete(v1);
1554 >            g.complete(v2);
1555 >        } else {
1556 >            g.complete(v2);
1557 >            f.complete(v1);
1558 >        }
1559  
1560 <        r = new Noop();
1561 <        f = new CompletableFuture<Integer>();
1562 <        f.complete(one);
1563 <        f2 = new CompletableFuture<Integer>();
1633 <        g = f.runAfterEitherAsync(f2, r);
1634 <        checkCompletedNormally(g, null);
1635 <        assertTrue(r.ran);
1636 <    }
1560 >        checkCompletedWithWrappedCFException(h);
1561 >        checkCompletedNormally(f, v1);
1562 >        checkCompletedNormally(g, v2);
1563 >    }}
1564  
1565      /**
1566 <     * runAfterEitherAsync result completes exceptionally after exceptional
1567 <     * completion of source
1566 >     * runAfterBoth result completes normally after normal
1567 >     * completion of sources
1568       */
1569 <    public void testRunAfterEitherAsync2() {
1570 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1571 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1572 <        Noop r = new Noop();
1573 <        CompletableFuture<Void> g = f.runAfterEitherAsync(f2, r);
1574 <        f.completeExceptionally(new CFException());
1575 <        checkCompletedWithWrappedCFException(g);
1576 <
1577 <        r = new Noop();
1578 <        f = new CompletableFuture<Integer>();
1579 <        f2 = new CompletableFuture<Integer>();
1580 <        f2.completeExceptionally(new CFException());
1581 <        g = f.runAfterEitherAsync(f2, r);
1582 <        f.complete(one);
1583 <        checkCompletedWithWrappedCFException(g);
1584 <    }
1569 >    public void testRunAfterBoth_normalCompletion() {
1570 >        for (ExecutionMode m : ExecutionMode.values())
1571 >        for (boolean createIncomplete : new boolean[] { true, false })
1572 >        for (boolean fFirst : new boolean[] { true, false })
1573 >        for (Integer v1 : new Integer[] { 1, null })
1574 >        for (Integer v2 : new Integer[] { 2, null })
1575 >    {
1576 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1577 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
1578 >        final Noop r = new Noop(m);
1579 >
1580 >        if (fFirst) f.complete(v1); else g.complete(v2);
1581 >        if (!createIncomplete)
1582 >            if (!fFirst) f.complete(v1); else g.complete(v2);
1583 >        final CompletableFuture<Void> h = m.runAfterBoth(f, g, r);
1584 >        if (createIncomplete) {
1585 >            checkIncomplete(h);
1586 >            r.assertNotInvoked();
1587 >            if (!fFirst) f.complete(v1); else g.complete(v2);
1588 >        }
1589  
1590 <    /**
1591 <     * runAfterEitherAsync result completes exceptionally if action does
1592 <     */
1593 <    public void testRunAfterEitherAsync3() {
1594 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1664 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1665 <        FailingNoop r = new FailingNoop();
1666 <        CompletableFuture<Void> g = f.runAfterEitherAsync(f2, r);
1667 <        f.complete(one);
1668 <        checkCompletedWithWrappedCFException(g);
1669 <    }
1590 >        checkCompletedNormally(h, null);
1591 >        r.assertInvoked();
1592 >        checkCompletedNormally(f, v1);
1593 >        checkCompletedNormally(g, v2);
1594 >    }}
1595  
1596      /**
1597 <     * runAfterEitherAsync result completes exceptionally if either
1598 <     * source cancelled
1597 >     * runAfterBoth result completes exceptionally after exceptional
1598 >     * completion of either source
1599       */
1600 <    public void testRunAfterEitherAsync4() {
1601 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1602 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1603 <        Noop r = new Noop();
1604 <        CompletableFuture<Void> g = f.runAfterEitherAsync(f2, r);
1605 <        assertTrue(f.cancel(true));
1606 <        checkCompletedWithWrappedCancellationException(g);
1600 >    public void testRunAfterBoth_exceptionalCompletion() {
1601 >        for (ExecutionMode m : ExecutionMode.values())
1602 >        for (boolean createIncomplete : new boolean[] { true, false })
1603 >        for (boolean fFirst : new boolean[] { true, false })
1604 >        for (Integer v1 : new Integer[] { 1, null })
1605 >    {
1606 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1607 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
1608 >        final CFException ex = new CFException();
1609 >        final Noop r = new Noop(m);
1610 >
1611 >        (fFirst ? f : g).complete(v1);
1612 >        if (!createIncomplete)
1613 >            (!fFirst ? f : g).completeExceptionally(ex);
1614 >        final CompletableFuture<Void> h = m.runAfterBoth(f, g, r);
1615 >        if (createIncomplete) {
1616 >            checkIncomplete(h);
1617 >            (!fFirst ? f : g).completeExceptionally(ex);
1618 >        }
1619  
1620 <        r = new Noop();
1621 <        f = new CompletableFuture<Integer>();
1622 <        f2 = new CompletableFuture<Integer>();
1623 <        assertTrue(f2.cancel(true));
1624 <        g = f.runAfterEitherAsync(f2, r);
1688 <        checkCompletedWithWrappedCancellationException(g);
1689 <    }
1620 >        checkCompletedWithWrappedCFException(h, ex);
1621 >        r.assertNotInvoked();
1622 >        checkCompletedNormally(fFirst ? f : g, v1);
1623 >        checkCompletedWithWrappedCFException(!fFirst ? f : g, ex);
1624 >    }}
1625  
1626      /**
1627 <     * thenComposeAsync result completes normally after normal
1693 <     * completion of source
1694 <     */
1695 <    public void testThenComposeAsync() {
1696 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1697 <        CompletableFutureInc r = new CompletableFutureInc();
1698 <        CompletableFuture<Integer> g = f.thenComposeAsync(r);
1699 <        f.complete(one);
1700 <        checkCompletedNormally(g, two);
1701 <    }
1702 <
1703 <    /**
1704 <     * thenComposeAsync result completes exceptionally after
1705 <     * exceptional completion of source
1627 >     * runAfterBoth result completes exceptionally if either source cancelled
1628       */
1629 <    public void testThenComposeAsync2() {
1630 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1631 <        CompletableFutureInc r = new CompletableFutureInc();
1632 <        CompletableFuture<Integer> g = f.thenComposeAsync(r);
1633 <        f.completeExceptionally(new CFException());
1634 <        checkCompletedWithWrappedCFException(g);
1635 <    }
1629 >    public void testRunAfterBoth_sourceCancelled() {
1630 >        for (ExecutionMode m : ExecutionMode.values())
1631 >        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1632 >        for (boolean createIncomplete : new boolean[] { true, false })
1633 >        for (boolean fFirst : new boolean[] { true, false })
1634 >        for (Integer v1 : new Integer[] { 1, null })
1635 >    {
1636 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1637 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
1638 >        final Noop r = new Noop(m);
1639 >
1640 >
1641 >        (fFirst ? f : g).complete(v1);
1642 >        if (!createIncomplete)
1643 >            assertTrue((!fFirst ? f : g).cancel(mayInterruptIfRunning));
1644 >        final CompletableFuture<Void> h = m.runAfterBoth(f, g, r);
1645 >        if (createIncomplete) {
1646 >            checkIncomplete(h);
1647 >            assertTrue((!fFirst ? f : g).cancel(mayInterruptIfRunning));
1648 >        }
1649  
1650 <    /**
1651 <     * thenComposeAsync result completes exceptionally if action does
1652 <     */
1653 <    public void testThenComposeAsync3() {
1654 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1720 <        FailingCompletableFutureFunction r = new FailingCompletableFutureFunction();
1721 <        CompletableFuture<Integer> g = f.thenComposeAsync(r);
1722 <        f.complete(one);
1723 <        checkCompletedWithWrappedCFException(g);
1724 <    }
1650 >        checkCompletedWithWrappedCancellationException(h);
1651 >        checkCancelled(!fFirst ? f : g);
1652 >        r.assertNotInvoked();
1653 >        checkCompletedNormally(fFirst ? f : g, v1);
1654 >    }}
1655  
1656      /**
1657 <     * thenComposeAsync result completes exceptionally if source cancelled
1657 >     * runAfterBoth result completes exceptionally if action does
1658       */
1659 <    public void testThenComposeAsync4() {
1660 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1661 <        CompletableFutureInc r = new CompletableFutureInc();
1662 <        CompletableFuture<Integer> g = f.thenComposeAsync(r);
1663 <        assertTrue(f.cancel(true));
1664 <        checkCompletedWithWrappedCancellationException(g);
1665 <    }
1666 <
1659 >    public void testRunAfterBoth_actionFailed() {
1660 >        for (ExecutionMode m : ExecutionMode.values())
1661 >        for (boolean fFirst : new boolean[] { true, false })
1662 >        for (Integer v1 : new Integer[] { 1, null })
1663 >        for (Integer v2 : new Integer[] { 2, null })
1664 >    {
1665 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1666 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
1667 >        final FailingRunnable r1 = new FailingRunnable(m);
1668 >        final FailingRunnable r2 = new FailingRunnable(m);
1669 >
1670 >        CompletableFuture<Void> h1 = m.runAfterBoth(f, g, r1);
1671 >        if (fFirst) {
1672 >            f.complete(v1);
1673 >            g.complete(v2);
1674 >        } else {
1675 >            g.complete(v2);
1676 >            f.complete(v1);
1677 >        }
1678 >        CompletableFuture<Void> h2 = m.runAfterBoth(f, g, r2);
1679  
1680 <    // async with explicit executors
1680 >        checkCompletedWithWrappedCFException(h1);
1681 >        checkCompletedWithWrappedCFException(h2);
1682 >        checkCompletedNormally(f, v1);
1683 >        checkCompletedNormally(g, v2);
1684 >    }}
1685  
1686      /**
1687 <     * thenRunAsync result completes normally after normal completion of source
1687 >     * applyToEither result completes normally after normal completion
1688 >     * of either source
1689       */
1690 <    public void testThenRunAsyncE() {
1691 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1692 <        Noop r = new Noop();
1693 <        CompletableFuture<Void> g = f.thenRunAsync(r, new ThreadExecutor());
1694 <        f.complete(null);
1695 <        checkCompletedNormally(g, null);
1696 <
1697 <        // reordered version
1698 <        f = new CompletableFuture<Integer>();
1699 <        f.complete(null);
1700 <        r = new Noop();
1701 <        g = f.thenRunAsync(r, new ThreadExecutor());
1702 <        checkCompletedNormally(g, null);
1703 <    }
1690 >    public void testApplyToEither_normalCompletion() {
1691 >        for (ExecutionMode m : ExecutionMode.values())
1692 >        for (Integer v1 : new Integer[] { 1, null })
1693 >        for (Integer v2 : new Integer[] { 2, null })
1694 >    {
1695 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1696 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
1697 >        final IncFunction[] rs = new IncFunction[6];
1698 >        for (int i = 0; i < rs.length; i++) rs[i] = new IncFunction(m);
1699 >
1700 >        final CompletableFuture<Integer> h0 = m.applyToEither(f, g, rs[0]);
1701 >        final CompletableFuture<Integer> h1 = m.applyToEither(g, f, rs[1]);
1702 >        checkIncomplete(h0);
1703 >        checkIncomplete(h1);
1704 >        rs[0].assertNotInvoked();
1705 >        rs[1].assertNotInvoked();
1706 >        f.complete(v1);
1707 >        checkCompletedNormally(h0, inc(v1));
1708 >        checkCompletedNormally(h1, inc(v1));
1709 >        final CompletableFuture<Integer> h2 = m.applyToEither(f, g, rs[2]);
1710 >        final CompletableFuture<Integer> h3 = m.applyToEither(g, f, rs[3]);
1711 >        checkCompletedNormally(h2, inc(v1));
1712 >        checkCompletedNormally(h3, inc(v1));
1713 >        g.complete(v2);
1714 >
1715 >        // unspecified behavior - both source completions available
1716 >        final CompletableFuture<Integer> h4 = m.applyToEither(f, g, rs[4]);
1717 >        final CompletableFuture<Integer> h5 = m.applyToEither(g, f, rs[5]);
1718 >        rs[4].assertValue(h4.join());
1719 >        rs[5].assertValue(h5.join());
1720 >        assertTrue(Objects.equals(inc(v1), h4.join()) ||
1721 >                   Objects.equals(inc(v2), h4.join()));
1722 >        assertTrue(Objects.equals(inc(v1), h5.join()) ||
1723 >                   Objects.equals(inc(v2), h5.join()));
1724 >
1725 >        checkCompletedNormally(f, v1);
1726 >        checkCompletedNormally(g, v2);
1727 >        checkCompletedNormally(h0, inc(v1));
1728 >        checkCompletedNormally(h1, inc(v1));
1729 >        checkCompletedNormally(h2, inc(v1));
1730 >        checkCompletedNormally(h3, inc(v1));
1731 >        for (int i = 0; i < 4; i++) rs[i].assertValue(inc(v1));
1732 >    }}
1733  
1734      /**
1735 <     * thenRunAsync result completes exceptionally after exceptional
1736 <     * completion of source
1735 >     * applyToEither result completes exceptionally after exceptional
1736 >     * completion of either source
1737       */
1738 <    public void testThenRunAsync2E() {
1739 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1740 <        Noop r = new Noop();
1741 <        CompletableFuture<Void> g = f.thenRunAsync(r, new ThreadExecutor());
1742 <        f.completeExceptionally(new CFException());
1738 >    public void testApplyToEither_exceptionalCompletion() {
1739 >        for (ExecutionMode m : ExecutionMode.values())
1740 >        for (Integer v1 : new Integer[] { 1, null })
1741 >    {
1742 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1743 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
1744 >        final CFException ex = new CFException();
1745 >        final IncFunction[] rs = new IncFunction[6];
1746 >        for (int i = 0; i < rs.length; i++) rs[i] = new IncFunction(m);
1747 >
1748 >        final CompletableFuture<Integer> h0 = m.applyToEither(f, g, rs[0]);
1749 >        final CompletableFuture<Integer> h1 = m.applyToEither(g, f, rs[1]);
1750 >        checkIncomplete(h0);
1751 >        checkIncomplete(h1);
1752 >        rs[0].assertNotInvoked();
1753 >        rs[1].assertNotInvoked();
1754 >        f.completeExceptionally(ex);
1755 >        checkCompletedWithWrappedCFException(h0, ex);
1756 >        checkCompletedWithWrappedCFException(h1, ex);
1757 >        final CompletableFuture<Integer> h2 = m.applyToEither(f, g, rs[2]);
1758 >        final CompletableFuture<Integer> h3 = m.applyToEither(g, f, rs[3]);
1759 >        checkCompletedWithWrappedCFException(h2, ex);
1760 >        checkCompletedWithWrappedCFException(h3, ex);
1761 >        g.complete(v1);
1762 >
1763 >        // unspecified behavior - both source completions available
1764 >        final CompletableFuture<Integer> h4 = m.applyToEither(f, g, rs[4]);
1765 >        final CompletableFuture<Integer> h5 = m.applyToEither(g, f, rs[5]);
1766          try {
1767 <            g.join();
1768 <            shouldThrow();
1769 <        } catch (Exception ok) {
1767 >            assertEquals(inc(v1), h4.join());
1768 >            rs[4].assertValue(inc(v1));
1769 >        } catch (CompletionException ok) {
1770 >            checkCompletedWithWrappedCFException(h4, ex);
1771 >            rs[4].assertNotInvoked();
1772 >        }
1773 >        try {
1774 >            assertEquals(inc(v1), h5.join());
1775 >            rs[5].assertValue(inc(v1));
1776 >        } catch (CompletionException ok) {
1777 >            checkCompletedWithWrappedCFException(h5, ex);
1778 >            rs[5].assertNotInvoked();
1779          }
1772        checkCompletedWithWrappedCFException(g);
1773    }
1774
1775    /**
1776     * thenRunAsync result completes exceptionally if action does
1777     */
1778    public void testThenRunAsync3E() {
1779        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1780        FailingNoop r = new FailingNoop();
1781        CompletableFuture<Void> g = f.thenRunAsync(r, new ThreadExecutor());
1782        f.complete(null);
1783        checkCompletedWithWrappedCFException(g);
1784    }
1785
1786    /**
1787     * thenRunAsync result completes exceptionally if source cancelled
1788     */
1789    public void testThenRunAsync4E() {
1790        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1791        Noop r = new Noop();
1792        CompletableFuture<Void> g = f.thenRunAsync(r, new ThreadExecutor());
1793        assertTrue(f.cancel(true));
1794        checkCompletedWithWrappedCancellationException(g);
1795    }
1796
1797    /**
1798     * thenApplyAsync result completes normally after normal completion of source
1799     */
1800    public void testThenApplyAsyncE() {
1801        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1802        CompletableFuture<Integer> g = f.thenApplyAsync(inc, new ThreadExecutor());
1803        f.complete(one);
1804        checkCompletedNormally(g, two);
1805    }
1806
1807    /**
1808     * thenApplyAsync result completes exceptionally after exceptional
1809     * completion of source
1810     */
1811    public void testThenApplyAsync2E() {
1812        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1813        CompletableFuture<Integer> g = f.thenApplyAsync(inc, new ThreadExecutor());
1814        f.completeExceptionally(new CFException());
1815        checkCompletedWithWrappedCFException(g);
1816    }
1817
1818    /**
1819     * thenApplyAsync result completes exceptionally if action does
1820     */
1821    public void testThenApplyAsync3E() {
1822        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1823        FailingFunction r = new FailingFunction();
1824        CompletableFuture<Integer> g = f.thenApplyAsync(r, new ThreadExecutor());
1825        f.complete(null);
1826        checkCompletedWithWrappedCFException(g);
1827    }
1828
1829    /**
1830     * thenApplyAsync result completes exceptionally if source cancelled
1831     */
1832    public void testThenApplyAsync4E() {
1833        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1834        CompletableFuture<Integer> g = f.thenApplyAsync(inc, new ThreadExecutor());
1835        assertTrue(f.cancel(true));
1836        checkCompletedWithWrappedCancellationException(g);
1837    }
1838
1839    /**
1840     * thenAcceptAsync result completes normally after normal
1841     * completion of source
1842     */
1843    public void testThenAcceptAsyncE() {
1844        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1845        IncAction r = new IncAction();
1846        CompletableFuture<Void> g = f.thenAcceptAsync(r, new ThreadExecutor());
1847        f.complete(one);
1848        checkCompletedNormally(g, null);
1849        assertEquals(r.value, 2);
1850    }
1851
1852    /**
1853     * thenAcceptAsync result completes exceptionally after exceptional
1854     * completion of source
1855     */
1856    public void testThenAcceptAsync2E() {
1857        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1858        IncAction r = new IncAction();
1859        CompletableFuture<Void> g = f.thenAcceptAsync(r, new ThreadExecutor());
1860        f.completeExceptionally(new CFException());
1861        checkCompletedWithWrappedCFException(g);
1862    }
1863
1864    /**
1865     * thenAcceptAsync result completes exceptionally if action does
1866     */
1867    public void testThenAcceptAsync3E() {
1868        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1869        FailingConsumer r = new FailingConsumer();
1870        CompletableFuture<Void> g = f.thenAcceptAsync(r, new ThreadExecutor());
1871        f.complete(null);
1872        checkCompletedWithWrappedCFException(g);
1873    }
1874
1875    /**
1876     * thenAcceptAsync result completes exceptionally if source cancelled
1877     */
1878    public void testThenAcceptAsync4E() {
1879        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1880        IncAction r = new IncAction();
1881        CompletableFuture<Void> g = f.thenAcceptAsync(r, new ThreadExecutor());
1882        assertTrue(f.cancel(true));
1883        checkCompletedWithWrappedCancellationException(g);
1884    }
1885    /**
1886     * thenCombineAsync result completes normally after normal
1887     * completion of sources
1888     */
1889    public void testThenCombineAsyncE() {
1890        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1891        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1892        CompletableFuture<Integer> g = f.thenCombineAsync(f2, add, new ThreadExecutor());
1893        f.complete(one);
1894        checkIncomplete(g);
1895        f2.complete(two);
1896        checkCompletedNormally(g, three);
1897    }
1898
1899    /**
1900     * thenCombineAsync result completes exceptionally after exceptional
1901     * completion of source
1902     */
1903    public void testThenCombineAsync2E() {
1904        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1905        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1906        CompletableFuture<Integer> g = f.thenCombineAsync(f2, add, new ThreadExecutor());
1907        f.completeExceptionally(new CFException());
1908        f2.complete(two);
1909        checkCompletedWithWrappedCFException(g);
1910
1911        f = new CompletableFuture<Integer>();
1912        f2 = new CompletableFuture<Integer>();
1913        g = f.thenCombineAsync(f2, add, new ThreadExecutor());
1914        f.complete(one);
1915        f2.completeExceptionally(new CFException());
1916        checkCompletedWithWrappedCFException(g);
1917    }
1780  
1781 <    /**
1782 <     * thenCombineAsync result completes exceptionally if action does
1783 <     */
1784 <    public void testThenCombineAsync3E() {
1785 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1786 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1787 <        FailingBiFunction r = new FailingBiFunction();
1788 <        CompletableFuture<Integer> g = f.thenCombineAsync(f2, r, new ThreadExecutor());
1789 <        f.complete(one);
1790 <        checkIncomplete(g);
1791 <        f2.complete(two);
1792 <        checkCompletedWithWrappedCFException(g);
1793 <    }
1781 >        checkCompletedWithWrappedCFException(f, ex);
1782 >        checkCompletedNormally(g, v1);
1783 >        checkCompletedWithWrappedCFException(h0, ex);
1784 >        checkCompletedWithWrappedCFException(h1, ex);
1785 >        checkCompletedWithWrappedCFException(h2, ex);
1786 >        checkCompletedWithWrappedCFException(h3, ex);
1787 >        checkCompletedWithWrappedCFException(h4, ex);
1788 >        for (int i = 0; i < 4; i++) rs[i].assertNotInvoked();
1789 >    }}
1790 >
1791 >    public void testApplyToEither_exceptionalCompletion2() {
1792 >        for (ExecutionMode m : ExecutionMode.values())
1793 >        for (boolean fFirst : new boolean[] { true, false })
1794 >        for (Integer v1 : new Integer[] { 1, null })
1795 >    {
1796 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1797 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
1798 >        final CFException ex = new CFException();
1799 >        final IncFunction[] rs = new IncFunction[6];
1800 >        for (int i = 0; i < rs.length; i++) rs[i] = new IncFunction(m);
1801 >
1802 >        final CompletableFuture<Integer> h0 = m.applyToEither(f, g, rs[0]);
1803 >        final CompletableFuture<Integer> h1 = m.applyToEither(g, f, rs[1]);
1804 >        if (fFirst) {
1805 >            f.complete(v1);
1806 >            g.completeExceptionally(ex);
1807 >        } else {
1808 >            g.completeExceptionally(ex);
1809 >            f.complete(v1);
1810 >        }
1811 >        final CompletableFuture<Integer> h2 = m.applyToEither(f, g, rs[2]);
1812 >        final CompletableFuture<Integer> h3 = m.applyToEither(g, f, rs[3]);
1813  
1814 <    /**
1815 <     * thenCombineAsync result completes exceptionally if either source cancelled
1816 <     */
1817 <    public void testThenCombineAsync4E() {
1818 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1819 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1820 <        CompletableFuture<Integer> g = f.thenCombineAsync(f2, add, new ThreadExecutor());
1821 <        assertTrue(f.cancel(true));
1822 <        f2.complete(two);
1823 <        checkCompletedWithWrappedCancellationException(g);
1814 >        // unspecified behavior - both source completions available
1815 >        try {
1816 >            assertEquals(inc(v1), h0.join());
1817 >            rs[0].assertValue(inc(v1));
1818 >        } catch (CompletionException ok) {
1819 >            checkCompletedWithWrappedCFException(h0, ex);
1820 >            rs[0].assertNotInvoked();
1821 >        }
1822 >        try {
1823 >            assertEquals(inc(v1), h1.join());
1824 >            rs[1].assertValue(inc(v1));
1825 >        } catch (CompletionException ok) {
1826 >            checkCompletedWithWrappedCFException(h1, ex);
1827 >            rs[1].assertNotInvoked();
1828 >        }
1829 >        try {
1830 >            assertEquals(inc(v1), h2.join());
1831 >            rs[2].assertValue(inc(v1));
1832 >        } catch (CompletionException ok) {
1833 >            checkCompletedWithWrappedCFException(h2, ex);
1834 >            rs[2].assertNotInvoked();
1835 >        }
1836 >        try {
1837 >            assertEquals(inc(v1), h3.join());
1838 >            rs[3].assertValue(inc(v1));
1839 >        } catch (CompletionException ok) {
1840 >            checkCompletedWithWrappedCFException(h3, ex);
1841 >            rs[3].assertNotInvoked();
1842 >        }
1843  
1844 <        f = new CompletableFuture<Integer>();
1845 <        f2 = new CompletableFuture<Integer>();
1846 <        g = f.thenCombineAsync(f2, add, new ThreadExecutor());
1947 <        f.complete(one);
1948 <        assertTrue(f2.cancel(true));
1949 <        checkCompletedWithWrappedCancellationException(g);
1950 <    }
1844 >        checkCompletedNormally(f, v1);
1845 >        checkCompletedWithWrappedCFException(g, ex);
1846 >    }}
1847  
1848      /**
1849 <     * thenAcceptBothAsync result completes normally after normal
1954 <     * completion of sources
1849 >     * applyToEither result completes exceptionally if either source cancelled
1850       */
1851 <    public void testThenAcceptBothAsyncE() {
1852 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1853 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1854 <        AddAction r = new AddAction();
1855 <        CompletableFuture<Void> g = f.thenAcceptBothAsync(f2, r, new ThreadExecutor());
1856 <        f.complete(one);
1857 <        checkIncomplete(g);
1858 <        f2.complete(two);
1859 <        checkCompletedNormally(g, null);
1860 <        assertEquals(r.value, 3);
1861 <    }
1851 >    public void testApplyToEither_sourceCancelled() {
1852 >        for (ExecutionMode m : ExecutionMode.values())
1853 >        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1854 >        for (Integer v1 : new Integer[] { 1, null })
1855 >    {
1856 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1857 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
1858 >        final IncFunction[] rs = new IncFunction[6];
1859 >        for (int i = 0; i < rs.length; i++) rs[i] = new IncFunction(m);
1860 >
1861 >        final CompletableFuture<Integer> h0 = m.applyToEither(f, g, rs[0]);
1862 >        final CompletableFuture<Integer> h1 = m.applyToEither(g, f, rs[1]);
1863 >        checkIncomplete(h0);
1864 >        checkIncomplete(h1);
1865 >        rs[0].assertNotInvoked();
1866 >        rs[1].assertNotInvoked();
1867 >        f.cancel(mayInterruptIfRunning);
1868 >        checkCompletedWithWrappedCancellationException(h0);
1869 >        checkCompletedWithWrappedCancellationException(h1);
1870 >        final CompletableFuture<Integer> h2 = m.applyToEither(f, g, rs[2]);
1871 >        final CompletableFuture<Integer> h3 = m.applyToEither(g, f, rs[3]);
1872 >        checkCompletedWithWrappedCancellationException(h2);
1873 >        checkCompletedWithWrappedCancellationException(h3);
1874 >        g.complete(v1);
1875 >
1876 >        // unspecified behavior - both source completions available
1877 >        final CompletableFuture<Integer> h4 = m.applyToEither(f, g, rs[4]);
1878 >        final CompletableFuture<Integer> h5 = m.applyToEither(g, f, rs[5]);
1879 >        try {
1880 >            assertEquals(inc(v1), h4.join());
1881 >            rs[4].assertValue(inc(v1));
1882 >        } catch (CompletionException ok) {
1883 >            checkCompletedWithWrappedCancellationException(h4);
1884 >            rs[4].assertNotInvoked();
1885 >        }
1886 >        try {
1887 >            assertEquals(inc(v1), h5.join());
1888 >            rs[5].assertValue(inc(v1));
1889 >        } catch (CompletionException ok) {
1890 >            checkCompletedWithWrappedCancellationException(h5);
1891 >            rs[5].assertNotInvoked();
1892 >        }
1893  
1894 <    /**
1895 <     * thenAcceptBothAsync result completes exceptionally after exceptional
1896 <     * completion of source
1897 <     */
1898 <    public void testThenAcceptBothAsync2E() {
1899 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1900 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1901 <        AddAction r = new AddAction();
1902 <        CompletableFuture<Void> g = f.thenAcceptBothAsync(f2, r, new ThreadExecutor());
1903 <        f.completeExceptionally(new CFException());
1904 <        f2.complete(two);
1905 <        checkCompletedWithWrappedCFException(g);
1894 >        checkCancelled(f);
1895 >        checkCompletedNormally(g, v1);
1896 >        checkCompletedWithWrappedCancellationException(h0);
1897 >        checkCompletedWithWrappedCancellationException(h1);
1898 >        checkCompletedWithWrappedCancellationException(h2);
1899 >        checkCompletedWithWrappedCancellationException(h3);
1900 >        for (int i = 0; i < 4; i++) rs[i].assertNotInvoked();
1901 >    }}
1902 >
1903 >    public void testApplyToEither_sourceCancelled2() {
1904 >        for (ExecutionMode m : ExecutionMode.values())
1905 >        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1906 >        for (boolean fFirst : new boolean[] { true, false })
1907 >        for (Integer v1 : new Integer[] { 1, null })
1908 >    {
1909 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1910 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
1911 >        final IncFunction[] rs = new IncFunction[6];
1912 >        for (int i = 0; i < rs.length; i++) rs[i] = new IncFunction(m);
1913 >
1914 >        final CompletableFuture<Integer> h0 = m.applyToEither(f, g, rs[0]);
1915 >        final CompletableFuture<Integer> h1 = m.applyToEither(g, f, rs[1]);
1916 >        if (fFirst) {
1917 >            f.complete(v1);
1918 >            g.cancel(mayInterruptIfRunning);
1919 >        } else {
1920 >            g.cancel(mayInterruptIfRunning);
1921 >            f.complete(v1);
1922 >        }
1923 >        final CompletableFuture<Integer> h2 = m.applyToEither(f, g, rs[2]);
1924 >        final CompletableFuture<Integer> h3 = m.applyToEither(g, f, rs[3]);
1925  
1926 <        r = new AddAction();
1927 <        f = new CompletableFuture<Integer>();
1928 <        f2 = new CompletableFuture<Integer>();
1929 <        g = f.thenAcceptBothAsync(f2, r, new ThreadExecutor());
1930 <        f.complete(one);
1931 <        f2.completeExceptionally(new CFException());
1932 <        checkCompletedWithWrappedCFException(g);
1933 <    }
1926 >        // unspecified behavior - both source completions available
1927 >        try {
1928 >            assertEquals(inc(v1), h0.join());
1929 >            rs[0].assertValue(inc(v1));
1930 >        } catch (CompletionException ok) {
1931 >            checkCompletedWithWrappedCancellationException(h0);
1932 >            rs[0].assertNotInvoked();
1933 >        }
1934 >        try {
1935 >            assertEquals(inc(v1), h1.join());
1936 >            rs[1].assertValue(inc(v1));
1937 >        } catch (CompletionException ok) {
1938 >            checkCompletedWithWrappedCancellationException(h1);
1939 >            rs[1].assertNotInvoked();
1940 >        }
1941 >        try {
1942 >            assertEquals(inc(v1), h2.join());
1943 >            rs[2].assertValue(inc(v1));
1944 >        } catch (CompletionException ok) {
1945 >            checkCompletedWithWrappedCancellationException(h2);
1946 >            rs[2].assertNotInvoked();
1947 >        }
1948 >        try {
1949 >            assertEquals(inc(v1), h3.join());
1950 >            rs[3].assertValue(inc(v1));
1951 >        } catch (CompletionException ok) {
1952 >            checkCompletedWithWrappedCancellationException(h3);
1953 >            rs[3].assertNotInvoked();
1954 >        }
1955  
1956 <    /**
1957 <     * thenAcceptBothAsync result completes exceptionally if action does
1958 <     */
1993 <    public void testThenAcceptBothAsync3E() {
1994 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1995 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1996 <        FailingBiConsumer r = new FailingBiConsumer();
1997 <        CompletableFuture<Void> g = f.thenAcceptBothAsync(f2, r, new ThreadExecutor());
1998 <        f.complete(one);
1999 <        checkIncomplete(g);
2000 <        f2.complete(two);
2001 <        checkCompletedWithWrappedCFException(g);
2002 <    }
1956 >        checkCompletedNormally(f, v1);
1957 >        checkCancelled(g);
1958 >    }}
1959  
1960      /**
1961 <     * thenAcceptBothAsync result completes exceptionally if either source cancelled
1961 >     * applyToEither result completes exceptionally if action does
1962       */
1963 <    public void testThenAcceptBothAsync4E() {
1964 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1965 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1966 <        AddAction r = new AddAction();
1967 <        CompletableFuture<Void> g = f.thenAcceptBothAsync(f2, r, new ThreadExecutor());
1968 <        assertTrue(f.cancel(true));
1969 <        f2.complete(two);
1970 <        checkCompletedWithWrappedCancellationException(g);
1971 <
1972 <        r = new AddAction();
1973 <        f = new CompletableFuture<Integer>();
1974 <        f2 = new CompletableFuture<Integer>();
1975 <        g = f.thenAcceptBothAsync(f2, r, new ThreadExecutor());
1976 <        f.complete(one);
1977 <        assertTrue(f2.cancel(true));
1978 <        checkCompletedWithWrappedCancellationException(g);
1979 <    }
1963 >    public void testApplyToEither_actionFailed() {
1964 >        for (ExecutionMode m : ExecutionMode.values())
1965 >        for (Integer v1 : new Integer[] { 1, null })
1966 >        for (Integer v2 : new Integer[] { 2, null })
1967 >    {
1968 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1969 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
1970 >        final FailingFunction[] rs = new FailingFunction[6];
1971 >        for (int i = 0; i < rs.length; i++) rs[i] = new FailingFunction(m);
1972 >
1973 >        final CompletableFuture<Integer> h0 = m.applyToEither(f, g, rs[0]);
1974 >        final CompletableFuture<Integer> h1 = m.applyToEither(g, f, rs[1]);
1975 >        f.complete(v1);
1976 >        final CompletableFuture<Integer> h2 = m.applyToEither(f, g, rs[2]);
1977 >        final CompletableFuture<Integer> h3 = m.applyToEither(g, f, rs[3]);
1978 >        checkCompletedWithWrappedCFException(h0);
1979 >        checkCompletedWithWrappedCFException(h1);
1980 >        checkCompletedWithWrappedCFException(h2);
1981 >        checkCompletedWithWrappedCFException(h3);
1982 >        for (int i = 0; i < 4; i++) rs[i].assertValue(v1);
1983 >
1984 >        g.complete(v2);
1985 >
1986 >        // unspecified behavior - both source completions available
1987 >        final CompletableFuture<Integer> h4 = m.applyToEither(f, g, rs[4]);
1988 >        final CompletableFuture<Integer> h5 = m.applyToEither(g, f, rs[5]);
1989 >
1990 >        checkCompletedWithWrappedCFException(h4);
1991 >        assertTrue(Objects.equals(v1, rs[4].value) ||
1992 >                   Objects.equals(v2, rs[4].value));
1993 >        checkCompletedWithWrappedCFException(h5);
1994 >        assertTrue(Objects.equals(v1, rs[5].value) ||
1995 >                   Objects.equals(v2, rs[5].value));
1996 >
1997 >        checkCompletedNormally(f, v1);
1998 >        checkCompletedNormally(g, v2);
1999 >    }}
2000  
2001      /**
2002 <     * runAfterBothAsync result completes normally after normal
2003 <     * completion of sources
2002 >     * acceptEither result completes normally after normal completion
2003 >     * of either source
2004       */
2005 <    public void testRunAfterBothAsyncE() {
2006 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
2007 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
2008 <        Noop r = new Noop();
2009 <        CompletableFuture<Void> g = f.runAfterBothAsync(f2, r, new ThreadExecutor());
2010 <        f.complete(one);
2011 <        checkIncomplete(g);
2012 <        f2.complete(two);
2013 <        checkCompletedNormally(g, null);
2014 <        assertTrue(r.ran);
2015 <    }
2005 >    public void testAcceptEither_normalCompletion() {
2006 >        for (ExecutionMode m : ExecutionMode.values())
2007 >        for (Integer v1 : new Integer[] { 1, null })
2008 >        for (Integer v2 : new Integer[] { 2, null })
2009 >    {
2010 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
2011 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
2012 >        final NoopConsumer[] rs = new NoopConsumer[6];
2013 >        for (int i = 0; i < rs.length; i++) rs[i] = new NoopConsumer(m);
2014 >
2015 >        final CompletableFuture<Void> h0 = m.acceptEither(f, g, rs[0]);
2016 >        final CompletableFuture<Void> h1 = m.acceptEither(g, f, rs[1]);
2017 >        checkIncomplete(h0);
2018 >        checkIncomplete(h1);
2019 >        rs[0].assertNotInvoked();
2020 >        rs[1].assertNotInvoked();
2021 >        f.complete(v1);
2022 >        checkCompletedNormally(h0, null);
2023 >        checkCompletedNormally(h1, null);
2024 >        rs[0].assertValue(v1);
2025 >        rs[1].assertValue(v1);
2026 >        final CompletableFuture<Void> h2 = m.acceptEither(f, g, rs[2]);
2027 >        final CompletableFuture<Void> h3 = m.acceptEither(g, f, rs[3]);
2028 >        checkCompletedNormally(h2, null);
2029 >        checkCompletedNormally(h3, null);
2030 >        rs[2].assertValue(v1);
2031 >        rs[3].assertValue(v1);
2032 >        g.complete(v2);
2033 >
2034 >        // unspecified behavior - both source completions available
2035 >        final CompletableFuture<Void> h4 = m.acceptEither(f, g, rs[4]);
2036 >        final CompletableFuture<Void> h5 = m.acceptEither(g, f, rs[5]);
2037 >        checkCompletedNormally(h4, null);
2038 >        checkCompletedNormally(h5, null);
2039 >        assertTrue(Objects.equals(v1, rs[4].value) ||
2040 >                   Objects.equals(v2, rs[4].value));
2041 >        assertTrue(Objects.equals(v1, rs[5].value) ||
2042 >                   Objects.equals(v2, rs[5].value));
2043 >
2044 >        checkCompletedNormally(f, v1);
2045 >        checkCompletedNormally(g, v2);
2046 >        checkCompletedNormally(h0, null);
2047 >        checkCompletedNormally(h1, null);
2048 >        checkCompletedNormally(h2, null);
2049 >        checkCompletedNormally(h3, null);
2050 >        for (int i = 0; i < 4; i++) rs[i].assertValue(v1);
2051 >    }}
2052  
2053      /**
2054 <     * runAfterBothAsync result completes exceptionally after exceptional
2055 <     * completion of source
2054 >     * acceptEither result completes exceptionally after exceptional
2055 >     * completion of either source
2056       */
2057 <    public void testRunAfterBothAsync2E() {
2058 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
2059 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
2060 <        Noop r = new Noop();
2061 <        CompletableFuture<Void> g = f.runAfterBothAsync(f2, r, new ThreadExecutor());
2062 <        f.completeExceptionally(new CFException());
2063 <        f2.complete(two);
2064 <        checkCompletedWithWrappedCFException(g);
2065 <
2066 <        r = new Noop();
2067 <        f = new CompletableFuture<Integer>();
2068 <        f2 = new CompletableFuture<Integer>();
2069 <        g = f.runAfterBothAsync(f2, r, new ThreadExecutor());
2070 <        f.complete(one);
2071 <        f2.completeExceptionally(new CFException());
2072 <        checkCompletedWithWrappedCFException(g);
2073 <    }
2057 >    public void testAcceptEither_exceptionalCompletion() {
2058 >        for (ExecutionMode m : ExecutionMode.values())
2059 >        for (Integer v1 : new Integer[] { 1, null })
2060 >    {
2061 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
2062 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
2063 >        final CFException ex = new CFException();
2064 >        final NoopConsumer[] rs = new NoopConsumer[6];
2065 >        for (int i = 0; i < rs.length; i++) rs[i] = new NoopConsumer(m);
2066 >
2067 >        final CompletableFuture<Void> h0 = m.acceptEither(f, g, rs[0]);
2068 >        final CompletableFuture<Void> h1 = m.acceptEither(g, f, rs[1]);
2069 >        checkIncomplete(h0);
2070 >        checkIncomplete(h1);
2071 >        rs[0].assertNotInvoked();
2072 >        rs[1].assertNotInvoked();
2073 >        f.completeExceptionally(ex);
2074 >        checkCompletedWithWrappedCFException(h0, ex);
2075 >        checkCompletedWithWrappedCFException(h1, ex);
2076 >        final CompletableFuture<Void> h2 = m.acceptEither(f, g, rs[2]);
2077 >        final CompletableFuture<Void> h3 = m.acceptEither(g, f, rs[3]);
2078 >        checkCompletedWithWrappedCFException(h2, ex);
2079 >        checkCompletedWithWrappedCFException(h3, ex);
2080 >
2081 >        g.complete(v1);
2082 >
2083 >        // unspecified behavior - both source completions available
2084 >        final CompletableFuture<Void> h4 = m.acceptEither(f, g, rs[4]);
2085 >        final CompletableFuture<Void> h5 = m.acceptEither(g, f, rs[5]);
2086 >        try {
2087 >            assertNull(h4.join());
2088 >            rs[4].assertValue(v1);
2089 >        } catch (CompletionException ok) {
2090 >            checkCompletedWithWrappedCFException(h4, ex);
2091 >            rs[4].assertNotInvoked();
2092 >        }
2093 >        try {
2094 >            assertNull(h5.join());
2095 >            rs[5].assertValue(v1);
2096 >        } catch (CompletionException ok) {
2097 >            checkCompletedWithWrappedCFException(h5, ex);
2098 >            rs[5].assertNotInvoked();
2099 >        }
2100  
2101 <    /**
2102 <     * runAfterBothAsync result completes exceptionally if action does
2103 <     */
2104 <    public void testRunAfterBothAsync3E() {
2105 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
2106 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
2107 <        FailingNoop r = new FailingNoop();
2108 <        CompletableFuture<Void> g = f.runAfterBothAsync(f2, r, new ThreadExecutor());
2109 <        f.complete(one);
2110 <        checkIncomplete(g);
2111 <        f2.complete(two);
2112 <        checkCompletedWithWrappedCFException(g);
2113 <    }
2101 >        checkCompletedWithWrappedCFException(f, ex);
2102 >        checkCompletedNormally(g, v1);
2103 >        checkCompletedWithWrappedCFException(h0, ex);
2104 >        checkCompletedWithWrappedCFException(h1, ex);
2105 >        checkCompletedWithWrappedCFException(h2, ex);
2106 >        checkCompletedWithWrappedCFException(h3, ex);
2107 >        checkCompletedWithWrappedCFException(h4, ex);
2108 >        for (int i = 0; i < 4; i++) rs[i].assertNotInvoked();
2109 >    }}
2110 >
2111 >    public void testAcceptEither_exceptionalCompletion2() {
2112 >        for (ExecutionMode m : ExecutionMode.values())
2113 >        for (boolean fFirst : new boolean[] { true, false })
2114 >        for (Integer v1 : new Integer[] { 1, null })
2115 >    {
2116 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
2117 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
2118 >        final CFException ex = new CFException();
2119 >        final NoopConsumer[] rs = new NoopConsumer[6];
2120 >        for (int i = 0; i < rs.length; i++) rs[i] = new NoopConsumer(m);
2121 >
2122 >        final CompletableFuture<Void> h0 = m.acceptEither(f, g, rs[0]);
2123 >        final CompletableFuture<Void> h1 = m.acceptEither(g, f, rs[1]);
2124 >        if (fFirst) {
2125 >            f.complete(v1);
2126 >            g.completeExceptionally(ex);
2127 >        } else {
2128 >            g.completeExceptionally(ex);
2129 >            f.complete(v1);
2130 >        }
2131 >        final CompletableFuture<Void> h2 = m.acceptEither(f, g, rs[2]);
2132 >        final CompletableFuture<Void> h3 = m.acceptEither(g, f, rs[3]);
2133  
2134 <    /**
2135 <     * runAfterBothAsync result completes exceptionally if either source cancelled
2136 <     */
2137 <    public void testRunAfterBothAsync4E() {
2138 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
2139 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
2140 <        Noop r = new Noop();
2141 <        CompletableFuture<Void> g = f.runAfterBothAsync(f2, r, new ThreadExecutor());
2142 <        assertTrue(f.cancel(true));
2143 <        f2.complete(two);
2144 <        checkCompletedWithWrappedCancellationException(g);
2134 >        // unspecified behavior - both source completions available
2135 >        try {
2136 >            assertEquals(null, h0.join());
2137 >            rs[0].assertValue(v1);
2138 >        } catch (CompletionException ok) {
2139 >            checkCompletedWithWrappedCFException(h0, ex);
2140 >            rs[0].assertNotInvoked();
2141 >        }
2142 >        try {
2143 >            assertEquals(null, h1.join());
2144 >            rs[1].assertValue(v1);
2145 >        } catch (CompletionException ok) {
2146 >            checkCompletedWithWrappedCFException(h1, ex);
2147 >            rs[1].assertNotInvoked();
2148 >        }
2149 >        try {
2150 >            assertEquals(null, h2.join());
2151 >            rs[2].assertValue(v1);
2152 >        } catch (CompletionException ok) {
2153 >            checkCompletedWithWrappedCFException(h2, ex);
2154 >            rs[2].assertNotInvoked();
2155 >        }
2156 >        try {
2157 >            assertEquals(null, h3.join());
2158 >            rs[3].assertValue(v1);
2159 >        } catch (CompletionException ok) {
2160 >            checkCompletedWithWrappedCFException(h3, ex);
2161 >            rs[3].assertNotInvoked();
2162 >        }
2163  
2164 <        r = new Noop();
2165 <        f = new CompletableFuture<Integer>();
2166 <        f2 = new CompletableFuture<Integer>();
2092 <        g = f.runAfterBothAsync(f2, r, new ThreadExecutor());
2093 <        f.complete(one);
2094 <        assertTrue(f2.cancel(true));
2095 <        checkCompletedWithWrappedCancellationException(g);
2096 <    }
2164 >        checkCompletedNormally(f, v1);
2165 >        checkCompletedWithWrappedCFException(g, ex);
2166 >    }}
2167  
2168      /**
2169 <     * applyToEitherAsync result completes normally after normal
2100 <     * completion of sources
2169 >     * acceptEither result completes exceptionally if either source cancelled
2170       */
2171 <    public void testApplyToEitherAsyncE() {
2172 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
2173 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
2174 <        CompletableFuture<Integer> g = f.applyToEitherAsync(f2, inc, new ThreadExecutor());
2175 <        f.complete(one);
2176 <        checkCompletedNormally(g, two);
2171 >    public void testAcceptEither_sourceCancelled() {
2172 >        for (ExecutionMode m : ExecutionMode.values())
2173 >        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2174 >        for (Integer v1 : new Integer[] { 1, null })
2175 >    {
2176 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
2177 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
2178 >        final NoopConsumer[] rs = new NoopConsumer[6];
2179 >        for (int i = 0; i < rs.length; i++) rs[i] = new NoopConsumer(m);
2180 >
2181 >        final CompletableFuture<Void> h0 = m.acceptEither(f, g, rs[0]);
2182 >        final CompletableFuture<Void> h1 = m.acceptEither(g, f, rs[1]);
2183 >        checkIncomplete(h0);
2184 >        checkIncomplete(h1);
2185 >        rs[0].assertNotInvoked();
2186 >        rs[1].assertNotInvoked();
2187 >        f.cancel(mayInterruptIfRunning);
2188 >        checkCompletedWithWrappedCancellationException(h0);
2189 >        checkCompletedWithWrappedCancellationException(h1);
2190 >        final CompletableFuture<Void> h2 = m.acceptEither(f, g, rs[2]);
2191 >        final CompletableFuture<Void> h3 = m.acceptEither(g, f, rs[3]);
2192 >        checkCompletedWithWrappedCancellationException(h2);
2193 >        checkCompletedWithWrappedCancellationException(h3);
2194 >
2195 >        g.complete(v1);
2196 >
2197 >        // unspecified behavior - both source completions available
2198 >        final CompletableFuture<Void> h4 = m.acceptEither(f, g, rs[4]);
2199 >        final CompletableFuture<Void> h5 = m.acceptEither(g, f, rs[5]);
2200 >        try {
2201 >            assertNull(h4.join());
2202 >            rs[4].assertValue(v1);
2203 >        } catch (CompletionException ok) {
2204 >            checkCompletedWithWrappedCancellationException(h4);
2205 >            rs[4].assertNotInvoked();
2206 >        }
2207 >        try {
2208 >            assertNull(h5.join());
2209 >            rs[5].assertValue(v1);
2210 >        } catch (CompletionException ok) {
2211 >            checkCompletedWithWrappedCancellationException(h5);
2212 >            rs[5].assertNotInvoked();
2213 >        }
2214  
2215 <        f = new CompletableFuture<Integer>();
2216 <        f.complete(one);
2217 <        f2 = new CompletableFuture<Integer>();
2218 <        g = f.applyToEitherAsync(f2, inc, new ThreadExecutor());
2219 <        checkCompletedNormally(g, two);
2220 <    }
2215 >        checkCancelled(f);
2216 >        checkCompletedNormally(g, v1);
2217 >        checkCompletedWithWrappedCancellationException(h0);
2218 >        checkCompletedWithWrappedCancellationException(h1);
2219 >        checkCompletedWithWrappedCancellationException(h2);
2220 >        checkCompletedWithWrappedCancellationException(h3);
2221 >        for (int i = 0; i < 4; i++) rs[i].assertNotInvoked();
2222 >    }}
2223  
2224      /**
2225 <     * applyToEitherAsync result completes exceptionally after exceptional
2118 <     * completion of source
2225 >     * acceptEither result completes exceptionally if action does
2226       */
2227 <    public void testApplyToEitherAsync2E() {
2228 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
2229 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
2230 <        CompletableFuture<Integer> g = f.applyToEitherAsync(f2, inc, new ThreadExecutor());
2231 <        f.completeExceptionally(new CFException());
2232 <        checkCompletedWithWrappedCFException(g);
2233 <
2234 <        f = new CompletableFuture<Integer>();
2235 <        f2 = new CompletableFuture<Integer>();
2236 <        f2.completeExceptionally(new CFException());
2237 <        g = f.applyToEitherAsync(f2, inc, new ThreadExecutor());
2238 <        f.complete(one);
2239 <        checkCompletedWithWrappedCFException(g);
2240 <    }
2227 >    public void testAcceptEither_actionFailed() {
2228 >        for (ExecutionMode m : ExecutionMode.values())
2229 >        for (Integer v1 : new Integer[] { 1, null })
2230 >        for (Integer v2 : new Integer[] { 2, null })
2231 >    {
2232 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
2233 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
2234 >        final FailingConsumer[] rs = new FailingConsumer[6];
2235 >        for (int i = 0; i < rs.length; i++) rs[i] = new FailingConsumer(m);
2236 >
2237 >        final CompletableFuture<Void> h0 = m.acceptEither(f, g, rs[0]);
2238 >        final CompletableFuture<Void> h1 = m.acceptEither(g, f, rs[1]);
2239 >        f.complete(v1);
2240 >        final CompletableFuture<Void> h2 = m.acceptEither(f, g, rs[2]);
2241 >        final CompletableFuture<Void> h3 = m.acceptEither(g, f, rs[3]);
2242 >        checkCompletedWithWrappedCFException(h0);
2243 >        checkCompletedWithWrappedCFException(h1);
2244 >        checkCompletedWithWrappedCFException(h2);
2245 >        checkCompletedWithWrappedCFException(h3);
2246 >        for (int i = 0; i < 4; i++) rs[i].assertValue(v1);
2247 >
2248 >        g.complete(v2);
2249 >
2250 >        // unspecified behavior - both source completions available
2251 >        final CompletableFuture<Void> h4 = m.acceptEither(f, g, rs[4]);
2252 >        final CompletableFuture<Void> h5 = m.acceptEither(g, f, rs[5]);
2253 >
2254 >        checkCompletedWithWrappedCFException(h4);
2255 >        assertTrue(Objects.equals(v1, rs[4].value) ||
2256 >                   Objects.equals(v2, rs[4].value));
2257 >        checkCompletedWithWrappedCFException(h5);
2258 >        assertTrue(Objects.equals(v1, rs[5].value) ||
2259 >                   Objects.equals(v2, rs[5].value));
2260 >
2261 >        checkCompletedNormally(f, v1);
2262 >        checkCompletedNormally(g, v2);
2263 >    }}
2264  
2265      /**
2266 <     * applyToEitherAsync result completes exceptionally if action does
2266 >     * runAfterEither result completes normally after normal completion
2267 >     * of either source
2268       */
2269 <    public void testApplyToEitherAsync3E() {
2270 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
2271 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
2272 <        FailingFunction r = new FailingFunction();
2273 <        CompletableFuture<Integer> g = f.applyToEitherAsync(f2, r, new ThreadExecutor());
2274 <        f.complete(one);
2275 <        checkCompletedWithWrappedCFException(g);
2276 <    }
2269 >    public void testRunAfterEither_normalCompletion() {
2270 >        for (ExecutionMode m : ExecutionMode.values())
2271 >        for (Integer v1 : new Integer[] { 1, null })
2272 >        for (Integer v2 : new Integer[] { 2, null })
2273 >    {
2274 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
2275 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
2276 >        final Noop[] rs = new Noop[6];
2277 >        for (int i = 0; i < rs.length; i++) rs[i] = new Noop(m);
2278 >
2279 >        final CompletableFuture<Void> h0 = m.runAfterEither(f, g, rs[0]);
2280 >        final CompletableFuture<Void> h1 = m.runAfterEither(g, f, rs[1]);
2281 >        checkIncomplete(h0);
2282 >        checkIncomplete(h1);
2283 >        rs[0].assertNotInvoked();
2284 >        rs[1].assertNotInvoked();
2285 >        f.complete(v1);
2286 >        checkCompletedNormally(h0, null);
2287 >        checkCompletedNormally(h1, null);
2288 >        rs[0].assertInvoked();
2289 >        rs[1].assertInvoked();
2290 >        final CompletableFuture<Void> h2 = m.runAfterEither(f, g, rs[2]);
2291 >        final CompletableFuture<Void> h3 = m.runAfterEither(g, f, rs[3]);
2292 >        checkCompletedNormally(h2, null);
2293 >        checkCompletedNormally(h3, null);
2294 >        rs[2].assertInvoked();
2295 >        rs[3].assertInvoked();
2296 >
2297 >        g.complete(v2);
2298 >
2299 >        final CompletableFuture<Void> h4 = m.runAfterEither(f, g, rs[4]);
2300 >        final CompletableFuture<Void> h5 = m.runAfterEither(g, f, rs[5]);
2301 >
2302 >        checkCompletedNormally(f, v1);
2303 >        checkCompletedNormally(g, v2);
2304 >        checkCompletedNormally(h0, null);
2305 >        checkCompletedNormally(h1, null);
2306 >        checkCompletedNormally(h2, null);
2307 >        checkCompletedNormally(h3, null);
2308 >        checkCompletedNormally(h4, null);
2309 >        checkCompletedNormally(h5, null);
2310 >        for (int i = 0; i < 6; i++) rs[i].assertInvoked();
2311 >    }}
2312  
2313      /**
2314 <     * applyToEitherAsync result completes exceptionally if either source cancelled
2314 >     * runAfterEither result completes exceptionally after exceptional
2315 >     * completion of either source
2316       */
2317 <    public void testApplyToEitherAsync4E() {
2318 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
2319 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
2320 <        CompletableFuture<Integer> g = f.applyToEitherAsync(f2, inc, new ThreadExecutor());
2321 <        assertTrue(f.cancel(true));
2322 <        checkCompletedWithWrappedCancellationException(g);
2317 >    public void testRunAfterEither_exceptionalCompletion() {
2318 >        for (ExecutionMode m : ExecutionMode.values())
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 CFException ex = new CFException();
2324 >        final Noop[] rs = new Noop[6];
2325 >        for (int i = 0; i < rs.length; i++) rs[i] = new Noop(m);
2326 >
2327 >        final CompletableFuture<Void> h0 = m.runAfterEither(f, g, rs[0]);
2328 >        final CompletableFuture<Void> h1 = m.runAfterEither(g, f, rs[1]);
2329 >        checkIncomplete(h0);
2330 >        checkIncomplete(h1);
2331 >        rs[0].assertNotInvoked();
2332 >        rs[1].assertNotInvoked();
2333 >        f.completeExceptionally(ex);
2334 >        checkCompletedWithWrappedCFException(h0, ex);
2335 >        checkCompletedWithWrappedCFException(h1, ex);
2336 >        final CompletableFuture<Void> h2 = m.runAfterEither(f, g, rs[2]);
2337 >        final CompletableFuture<Void> h3 = m.runAfterEither(g, f, rs[3]);
2338 >        checkCompletedWithWrappedCFException(h2, ex);
2339 >        checkCompletedWithWrappedCFException(h3, ex);
2340 >
2341 >        g.complete(v1);
2342 >
2343 >        // unspecified behavior - both source completions available
2344 >        final CompletableFuture<Void> h4 = m.runAfterEither(f, g, rs[4]);
2345 >        final CompletableFuture<Void> h5 = m.runAfterEither(g, f, rs[5]);
2346 >        try {
2347 >            assertNull(h4.join());
2348 >            rs[4].assertInvoked();
2349 >        } catch (CompletionException ok) {
2350 >            checkCompletedWithWrappedCFException(h4, ex);
2351 >            rs[4].assertNotInvoked();
2352 >        }
2353 >        try {
2354 >            assertNull(h5.join());
2355 >            rs[5].assertInvoked();
2356 >        } catch (CompletionException ok) {
2357 >            checkCompletedWithWrappedCFException(h5, ex);
2358 >            rs[5].assertNotInvoked();
2359 >        }
2360  
2361 <        f = new CompletableFuture<Integer>();
2362 <        f2 = new CompletableFuture<Integer>();
2363 <        assertTrue(f2.cancel(true));
2364 <        g = f.applyToEitherAsync(f2, inc, new ThreadExecutor());
2365 <        checkCompletedWithWrappedCancellationException(g);
2366 <    }
2361 >        checkCompletedWithWrappedCFException(f, ex);
2362 >        checkCompletedNormally(g, v1);
2363 >        checkCompletedWithWrappedCFException(h0, ex);
2364 >        checkCompletedWithWrappedCFException(h1, ex);
2365 >        checkCompletedWithWrappedCFException(h2, ex);
2366 >        checkCompletedWithWrappedCFException(h3, ex);
2367 >        checkCompletedWithWrappedCFException(h4, ex);
2368 >        for (int i = 0; i < 4; i++) rs[i].assertNotInvoked();
2369 >    }}
2370 >
2371 >    public void testRunAfterEither_exceptionalCompletion2() {
2372 >        for (ExecutionMode m : ExecutionMode.values())
2373 >        for (boolean fFirst : new boolean[] { true, false })
2374 >        for (Integer v1 : new Integer[] { 1, null })
2375 >    {
2376 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
2377 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
2378 >        final CFException ex = new CFException();
2379 >        final Noop[] rs = new Noop[6];
2380 >        for (int i = 0; i < rs.length; i++) rs[i] = new Noop(m);
2381 >
2382 >        final CompletableFuture<Void> h0 = m.runAfterEither(f, g, rs[0]);
2383 >        final CompletableFuture<Void> h1 = m.runAfterEither(g, f, rs[1]);
2384 >        if (fFirst) {
2385 >            f.complete(v1);
2386 >            g.completeExceptionally(ex);
2387 >        } else {
2388 >            g.completeExceptionally(ex);
2389 >            f.complete(v1);
2390 >        }
2391 >        final CompletableFuture<Void> h2 = m.runAfterEither(f, g, rs[2]);
2392 >        final CompletableFuture<Void> h3 = m.runAfterEither(g, f, rs[3]);
2393  
2394 <    /**
2395 <     * acceptEitherAsync result completes normally after normal
2396 <     * completion of sources
2397 <     */
2398 <    public void testAcceptEitherAsyncE() {
2399 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
2400 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
2401 <        IncAction r = new IncAction();
2402 <        CompletableFuture<Void> g = f.acceptEitherAsync(f2, r, new ThreadExecutor());
2403 <        f.complete(one);
2404 <        checkCompletedNormally(g, null);
2405 <        assertEquals(r.value, 2);
2394 >        // unspecified behavior - both source completions available
2395 >        try {
2396 >            assertEquals(null, h0.join());
2397 >            rs[0].assertInvoked();
2398 >        } catch (CompletionException ok) {
2399 >            checkCompletedWithWrappedCFException(h0, ex);
2400 >            rs[0].assertNotInvoked();
2401 >        }
2402 >        try {
2403 >            assertEquals(null, h1.join());
2404 >            rs[1].assertInvoked();
2405 >        } catch (CompletionException ok) {
2406 >            checkCompletedWithWrappedCFException(h1, ex);
2407 >            rs[1].assertNotInvoked();
2408 >        }
2409 >        try {
2410 >            assertEquals(null, h2.join());
2411 >            rs[2].assertInvoked();
2412 >        } catch (CompletionException ok) {
2413 >            checkCompletedWithWrappedCFException(h2, ex);
2414 >            rs[2].assertNotInvoked();
2415 >        }
2416 >        try {
2417 >            assertEquals(null, h3.join());
2418 >            rs[3].assertInvoked();
2419 >        } catch (CompletionException ok) {
2420 >            checkCompletedWithWrappedCFException(h3, ex);
2421 >            rs[3].assertNotInvoked();
2422 >        }
2423  
2424 <        r = new IncAction();
2425 <        f = new CompletableFuture<Integer>();
2426 <        f.complete(one);
2180 <        f2 = new CompletableFuture<Integer>();
2181 <        g = f.acceptEitherAsync(f2, r, new ThreadExecutor());
2182 <        checkCompletedNormally(g, null);
2183 <        assertEquals(r.value, 2);
2184 <    }
2424 >        checkCompletedNormally(f, v1);
2425 >        checkCompletedWithWrappedCFException(g, ex);
2426 >    }}
2427  
2428      /**
2429 <     * acceptEitherAsync result completes exceptionally after exceptional
2188 <     * completion of source
2429 >     * runAfterEither result completes exceptionally if either source cancelled
2430       */
2431 <    public void testAcceptEitherAsync2E() {
2432 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
2433 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
2434 <        IncAction r = new IncAction();
2435 <        CompletableFuture<Void> g = f.acceptEitherAsync(f2, r, new ThreadExecutor());
2436 <        f.completeExceptionally(new CFException());
2437 <        checkCompletedWithWrappedCFException(g);
2438 <
2439 <        r = new IncAction();
2440 <        f = new CompletableFuture<Integer>();
2441 <        f2 = new CompletableFuture<Integer>();
2442 <        f2.completeExceptionally(new CFException());
2443 <        g = f.acceptEitherAsync(f2, r, new ThreadExecutor());
2444 <        f.complete(one);
2445 <        checkCompletedWithWrappedCFException(g);
2446 <    }
2431 >    public void testRunAfterEither_sourceCancelled() {
2432 >        for (ExecutionMode m : ExecutionMode.values())
2433 >        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2434 >        for (Integer v1 : new Integer[] { 1, null })
2435 >    {
2436 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
2437 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
2438 >        final Noop[] rs = new Noop[6];
2439 >        for (int i = 0; i < rs.length; i++) rs[i] = new Noop(m);
2440 >
2441 >        final CompletableFuture<Void> h0 = m.runAfterEither(f, g, rs[0]);
2442 >        final CompletableFuture<Void> h1 = m.runAfterEither(g, f, rs[1]);
2443 >        checkIncomplete(h0);
2444 >        checkIncomplete(h1);
2445 >        rs[0].assertNotInvoked();
2446 >        rs[1].assertNotInvoked();
2447 >        f.cancel(mayInterruptIfRunning);
2448 >        checkCompletedWithWrappedCancellationException(h0);
2449 >        checkCompletedWithWrappedCancellationException(h1);
2450 >        final CompletableFuture<Void> h2 = m.runAfterEither(f, g, rs[2]);
2451 >        final CompletableFuture<Void> h3 = m.runAfterEither(g, f, rs[3]);
2452 >        checkCompletedWithWrappedCancellationException(h2);
2453 >        checkCompletedWithWrappedCancellationException(h3);
2454 >
2455 >        g.complete(v1);
2456 >
2457 >        // unspecified behavior - both source completions available
2458 >        final CompletableFuture<Void> h4 = m.runAfterEither(f, g, rs[4]);
2459 >        final CompletableFuture<Void> h5 = m.runAfterEither(g, f, rs[5]);
2460 >        try {
2461 >            assertNull(h4.join());
2462 >            rs[4].assertInvoked();
2463 >        } catch (CompletionException ok) {
2464 >            checkCompletedWithWrappedCancellationException(h4);
2465 >            rs[4].assertNotInvoked();
2466 >        }
2467 >        try {
2468 >            assertNull(h5.join());
2469 >            rs[5].assertInvoked();
2470 >        } catch (CompletionException ok) {
2471 >            checkCompletedWithWrappedCancellationException(h5);
2472 >            rs[5].assertNotInvoked();
2473 >        }
2474  
2475 <    /**
2476 <     * acceptEitherAsync result completes exceptionally if action does
2477 <     */
2478 <    public void testAcceptEitherAsync3E() {
2479 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
2480 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
2481 <        FailingConsumer r = new FailingConsumer();
2482 <        CompletableFuture<Void> g = f.acceptEitherAsync(f2, r, new ThreadExecutor());
2215 <        f.complete(one);
2216 <        checkCompletedWithWrappedCFException(g);
2217 <    }
2475 >        checkCancelled(f);
2476 >        checkCompletedNormally(g, v1);
2477 >        checkCompletedWithWrappedCancellationException(h0);
2478 >        checkCompletedWithWrappedCancellationException(h1);
2479 >        checkCompletedWithWrappedCancellationException(h2);
2480 >        checkCompletedWithWrappedCancellationException(h3);
2481 >        for (int i = 0; i < 4; i++) rs[i].assertNotInvoked();
2482 >    }}
2483  
2484      /**
2485 <     * acceptEitherAsync result completes exceptionally if either
2221 <     * source cancelled
2485 >     * runAfterEither result completes exceptionally if action does
2486       */
2487 <    public void testAcceptEitherAsync4E() {
2488 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
2489 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
2490 <        IncAction r = new IncAction();
2491 <        CompletableFuture<Void> g = f.acceptEitherAsync(f2, r, new ThreadExecutor());
2492 <        assertTrue(f.cancel(true));
2493 <        checkCompletedWithWrappedCancellationException(g);
2494 <
2495 <        r = new IncAction();
2496 <        f = new CompletableFuture<Integer>();
2497 <        f2 = new CompletableFuture<Integer>();
2498 <        assertTrue(f2.cancel(true));
2499 <        g = f.acceptEitherAsync(f2, r, new ThreadExecutor());
2500 <        checkCompletedWithWrappedCancellationException(g);
2501 <    }
2487 >    public void testRunAfterEither_actionFailed() {
2488 >        for (ExecutionMode m : ExecutionMode.values())
2489 >        for (Integer v1 : new Integer[] { 1, null })
2490 >        for (Integer v2 : new Integer[] { 2, null })
2491 >    {
2492 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
2493 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
2494 >        final FailingRunnable[] rs = new FailingRunnable[6];
2495 >        for (int i = 0; i < rs.length; i++) rs[i] = new FailingRunnable(m);
2496 >
2497 >        final CompletableFuture<Void> h0 = m.runAfterEither(f, g, rs[0]);
2498 >        final CompletableFuture<Void> h1 = m.runAfterEither(g, f, rs[1]);
2499 >        f.complete(v1);
2500 >        final CompletableFuture<Void> h2 = m.runAfterEither(f, g, rs[2]);
2501 >        final CompletableFuture<Void> h3 = m.runAfterEither(g, f, rs[3]);
2502 >        checkCompletedWithWrappedCFException(h0);
2503 >        checkCompletedWithWrappedCFException(h1);
2504 >        checkCompletedWithWrappedCFException(h2);
2505 >        checkCompletedWithWrappedCFException(h3);
2506 >        for (int i = 0; i < 4; i++) rs[i].assertInvoked();
2507 >        g.complete(v2);
2508 >        final CompletableFuture<Void> h4 = m.runAfterEither(f, g, rs[4]);
2509 >        final CompletableFuture<Void> h5 = m.runAfterEither(g, f, rs[5]);
2510 >        checkCompletedWithWrappedCFException(h4);
2511 >        checkCompletedWithWrappedCFException(h5);
2512 >
2513 >        checkCompletedNormally(f, v1);
2514 >        checkCompletedNormally(g, v2);
2515 >        for (int i = 0; i < 6; i++) rs[i].assertInvoked();
2516 >    }}
2517  
2518      /**
2519 <     * runAfterEitherAsync result completes normally after normal
2241 <     * completion of sources
2519 >     * thenCompose result completes normally after normal completion of source
2520       */
2521 <    public void testRunAfterEitherAsyncE() {
2522 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
2523 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
2524 <        Noop r = new Noop();
2525 <        CompletableFuture<Void> g = f.runAfterEitherAsync(f2, r, new ThreadExecutor());
2526 <        f.complete(one);
2527 <        checkCompletedNormally(g, null);
2528 <        assertTrue(r.ran);
2529 <
2530 <        r = new Noop();
2531 <        f = new CompletableFuture<Integer>();
2532 <        f.complete(one);
2533 <        f2 = new CompletableFuture<Integer>();
2534 <        g = f.runAfterEitherAsync(f2, r, new ThreadExecutor());
2535 <        checkCompletedNormally(g, null);
2258 <        assertTrue(r.ran);
2259 <    }
2521 >    public void testThenCompose_normalCompletion() {
2522 >        for (ExecutionMode m : ExecutionMode.values())
2523 >        for (boolean createIncomplete : new boolean[] { true, false })
2524 >        for (Integer v1 : new Integer[] { 1, null })
2525 >    {
2526 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
2527 >        final CompletableFutureInc r = new CompletableFutureInc(m);
2528 >        if (!createIncomplete) f.complete(v1);
2529 >        final CompletableFuture<Integer> g = m.thenCompose(f, r);
2530 >        if (createIncomplete) f.complete(v1);
2531 >
2532 >        checkCompletedNormally(g, inc(v1));
2533 >        checkCompletedNormally(f, v1);
2534 >        r.assertValue(v1);
2535 >    }}
2536  
2537      /**
2538 <     * runAfterEitherAsync result completes exceptionally after exceptional
2538 >     * thenCompose result completes exceptionally after exceptional
2539       * completion of source
2540       */
2541 <    public void testRunAfterEitherAsync2E() {
2542 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
2543 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
2544 <        Noop r = new Noop();
2545 <        CompletableFuture<Void> g = f.runAfterEitherAsync(f2, r, new ThreadExecutor());
2546 <        f.completeExceptionally(new CFException());
2547 <        checkCompletedWithWrappedCFException(g);
2548 <
2549 <        r = new Noop();
2550 <        f = new CompletableFuture<Integer>();
2551 <        f2 = new CompletableFuture<Integer>();
2552 <        f2.completeExceptionally(new CFException());
2553 <        g = f.runAfterEitherAsync(f2, r, new ThreadExecutor());
2554 <        f.complete(one);
2555 <        checkCompletedWithWrappedCFException(g);
2280 <    }
2541 >    public void testThenCompose_exceptionalCompletion() {
2542 >        for (ExecutionMode m : ExecutionMode.values())
2543 >        for (boolean createIncomplete : new boolean[] { true, false })
2544 >    {
2545 >        final CFException ex = new CFException();
2546 >        final CompletableFutureInc r = new CompletableFutureInc(m);
2547 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
2548 >        if (!createIncomplete) f.completeExceptionally(ex);
2549 >        final CompletableFuture<Integer> g = m.thenCompose(f, r);
2550 >        if (createIncomplete) f.completeExceptionally(ex);
2551 >
2552 >        checkCompletedWithWrappedCFException(g, ex);
2553 >        checkCompletedWithWrappedCFException(f, ex);
2554 >        r.assertNotInvoked();
2555 >    }}
2556  
2557      /**
2558 <     * runAfterEitherAsync result completes exceptionally if action does
2284 <     */
2285 <    public void testRunAfterEitherAsync3E() {
2286 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
2287 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
2288 <        FailingNoop r = new FailingNoop();
2289 <        CompletableFuture<Void> g = f.runAfterEitherAsync(f2, r, new ThreadExecutor());
2290 <        f.complete(one);
2291 <        checkCompletedWithWrappedCFException(g);
2292 <    }
2293 <
2294 <    /**
2295 <     * runAfterEitherAsync result completes exceptionally if either
2296 <     * source cancelled
2558 >     * thenCompose result completes exceptionally if action does
2559       */
2560 <    public void testRunAfterEitherAsync4E() {
2561 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
2562 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
2563 <        Noop r = new Noop();
2564 <        CompletableFuture<Void> g = f.runAfterEitherAsync(f2, r, new ThreadExecutor());
2565 <        assertTrue(f.cancel(true));
2566 <        checkCompletedWithWrappedCancellationException(g);
2560 >    public void testThenCompose_actionFailed() {
2561 >        for (ExecutionMode m : ExecutionMode.values())
2562 >        for (boolean createIncomplete : new boolean[] { true, false })
2563 >        for (Integer v1 : new Integer[] { 1, null })
2564 >    {
2565 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
2566 >        final FailingCompletableFutureFunction r
2567 >            = new FailingCompletableFutureFunction(m);
2568 >        if (!createIncomplete) f.complete(v1);
2569 >        final CompletableFuture<Integer> g = m.thenCompose(f, r);
2570 >        if (createIncomplete) f.complete(v1);
2571  
2306        r = new Noop();
2307        f = new CompletableFuture<Integer>();
2308        f2 = new CompletableFuture<Integer>();
2309        assertTrue(f2.cancel(true));
2310        g = f.runAfterEitherAsync(f2, r, new ThreadExecutor());
2311        checkCompletedWithWrappedCancellationException(g);
2312    }
2313
2314    /**
2315     * thenComposeAsync result completes normally after normal
2316     * completion of source
2317     */
2318    public void testThenComposeAsyncE() {
2319        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
2320        CompletableFutureInc r = new CompletableFutureInc();
2321        CompletableFuture<Integer> g = f.thenComposeAsync(r, new ThreadExecutor());
2322        f.complete(one);
2323        checkCompletedNormally(g, two);
2324    }
2325
2326    /**
2327     * thenComposeAsync result completes exceptionally after
2328     * exceptional completion of source
2329     */
2330    public void testThenComposeAsync2E() {
2331        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
2332        CompletableFutureInc r = new CompletableFutureInc();
2333        CompletableFuture<Integer> g = f.thenComposeAsync(r, new ThreadExecutor());
2334        f.completeExceptionally(new CFException());
2572          checkCompletedWithWrappedCFException(g);
2573 <    }
2573 >        checkCompletedNormally(f, v1);
2574 >    }}
2575  
2576      /**
2577 <     * thenComposeAsync result completes exceptionally if action does
2577 >     * thenCompose result completes exceptionally if source cancelled
2578       */
2579 <    public void testThenComposeAsync3E() {
2580 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
2581 <        FailingCompletableFutureFunction r = new FailingCompletableFutureFunction();
2582 <        CompletableFuture<Integer> g = f.thenComposeAsync(r, new ThreadExecutor());
2583 <        f.complete(one);
2584 <        checkCompletedWithWrappedCFException(g);
2585 <    }
2579 >    public void testThenCompose_sourceCancelled() {
2580 >        for (ExecutionMode m : ExecutionMode.values())
2581 >        for (boolean createIncomplete : new boolean[] { true, false })
2582 >        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2583 >    {
2584 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
2585 >        final CompletableFutureInc r = new CompletableFutureInc(m);
2586 >        if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
2587 >        final CompletableFuture<Integer> g = m.thenCompose(f, r);
2588 >        if (createIncomplete) {
2589 >            checkIncomplete(g);
2590 >            assertTrue(f.cancel(mayInterruptIfRunning));
2591 >        }
2592  
2349    /**
2350     * thenComposeAsync result completes exceptionally if source cancelled
2351     */
2352    public void testThenComposeAsync4E() {
2353        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
2354        CompletableFutureInc r = new CompletableFutureInc();
2355        CompletableFuture<Integer> g = f.thenComposeAsync(r, new ThreadExecutor());
2356        assertTrue(f.cancel(true));
2593          checkCompletedWithWrappedCancellationException(g);
2594 <    }
2594 >        checkCancelled(f);
2595 >    }}
2596  
2597      // other static methods
2598  
# Line 2364 | Line 2601 | public class CompletableFutureTest exten
2601       * with the value null
2602       */
2603      public void testAllOf_empty() throws Exception {
2604 <        CompletableFuture<?> f = CompletableFuture.allOf();
2604 >        CompletableFuture<Void> f = CompletableFuture.allOf();
2605          checkCompletedNormally(f, null);
2606      }
2607  
2608      /**
2609 <     * allOf returns a future completed when all components complete
2609 >     * allOf returns a future completed normally with the value null
2610 >     * when all components complete normally
2611       */
2612 <    public void testAllOf() throws Exception {
2612 >    public void testAllOf_normal() throws Exception {
2613          for (int k = 1; k < 20; ++k) {
2614 <            CompletableFuture[] fs = new CompletableFuture[k];
2614 >            CompletableFuture<Integer>[] fs
2615 >                = (CompletableFuture<Integer>[]) new CompletableFuture[k];
2616              for (int i = 0; i < k; ++i)
2617 <                fs[i] = new CompletableFuture<Integer>();
2617 >                fs[i] = new CompletableFuture<>();
2618              CompletableFuture<Void> f = CompletableFuture.allOf(fs);
2619              for (int i = 0; i < k; ++i) {
2620                  checkIncomplete(f);
2621 +                checkIncomplete(CompletableFuture.allOf(fs));
2622                  fs[i].complete(one);
2623              }
2624              checkCompletedNormally(f, null);
2625 +            checkCompletedNormally(CompletableFuture.allOf(fs), null);
2626 +        }
2627 +    }
2628 +
2629 +    public void testAllOf_backwards() throws Exception {
2630 +        for (int k = 1; k < 20; ++k) {
2631 +            CompletableFuture<Integer>[] fs
2632 +                = (CompletableFuture<Integer>[]) new CompletableFuture[k];
2633 +            for (int i = 0; i < k; ++i)
2634 +                fs[i] = new CompletableFuture<>();
2635 +            CompletableFuture<Void> f = CompletableFuture.allOf(fs);
2636 +            for (int i = k - 1; i >= 0; i--) {
2637 +                checkIncomplete(f);
2638 +                checkIncomplete(CompletableFuture.allOf(fs));
2639 +                fs[i].complete(one);
2640 +            }
2641 +            checkCompletedNormally(f, null);
2642 +            checkCompletedNormally(CompletableFuture.allOf(fs), null);
2643          }
2644      }
2645  
# Line 2389 | Line 2647 | public class CompletableFutureTest exten
2647       * anyOf(no component futures) returns an incomplete future
2648       */
2649      public void testAnyOf_empty() throws Exception {
2650 <        CompletableFuture<?> f = CompletableFuture.anyOf();
2650 >        CompletableFuture<Object> f = CompletableFuture.anyOf();
2651          checkIncomplete(f);
2652      }
2653  
2654      /**
2655 <     * anyOf returns a future completed when any components complete
2655 >     * anyOf returns a future completed normally with a value when
2656 >     * a component future does
2657       */
2658 <    public void testAnyOf() throws Exception {
2659 <        for (int k = 1; k < 20; ++k) {
2658 >    public void testAnyOf_normal() throws Exception {
2659 >        for (int k = 0; k < 10; ++k) {
2660              CompletableFuture[] fs = new CompletableFuture[k];
2661              for (int i = 0; i < k; ++i)
2662 <                fs[i] = new CompletableFuture<Integer>();
2662 >                fs[i] = new CompletableFuture<>();
2663              CompletableFuture<Object> f = CompletableFuture.anyOf(fs);
2664              checkIncomplete(f);
2665              for (int i = 0; i < k; ++i) {
2666                  fs[i].complete(one);
2667                  checkCompletedNormally(f, one);
2668 +                checkCompletedNormally(CompletableFuture.anyOf(fs), one);
2669 +            }
2670 +        }
2671 +    }
2672 +
2673 +    /**
2674 +     * anyOf result completes exceptionally when any component does.
2675 +     */
2676 +    public void testAnyOf_exceptional() throws Exception {
2677 +        for (int k = 0; k < 10; ++k) {
2678 +            CompletableFuture[] fs = new CompletableFuture[k];
2679 +            for (int i = 0; i < k; ++i)
2680 +                fs[i] = new CompletableFuture<>();
2681 +            CompletableFuture<Object> f = CompletableFuture.anyOf(fs);
2682 +            checkIncomplete(f);
2683 +            for (int i = 0; i < k; ++i) {
2684 +                fs[i].completeExceptionally(new CFException());
2685 +                checkCompletedWithWrappedCFException(f);
2686 +                checkCompletedWithWrappedCFException(CompletableFuture.anyOf(fs));
2687              }
2688          }
2689      }
# Line 2414 | Line 2692 | public class CompletableFutureTest exten
2692       * Completion methods throw NullPointerException with null arguments
2693       */
2694      public void testNPE() {
2695 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
2696 <        CompletableFuture<Integer> g = new CompletableFuture<Integer>();
2695 >        CompletableFuture<Integer> f = new CompletableFuture<>();
2696 >        CompletableFuture<Integer> g = new CompletableFuture<>();
2697          CompletableFuture<Integer> nullFuture = (CompletableFuture<Integer>)null;
2698          CompletableFuture<?> h;
2699 <        Executor exec = new ThreadExecutor();
2699 >        ThreadExecutor exec = new ThreadExecutor();
2700  
2701          Runnable[] throwingActions = {
2702 <            () -> { CompletableFuture.supplyAsync(null); },
2703 <            () -> { CompletableFuture.supplyAsync(null, exec); },
2704 <            () -> { CompletableFuture.supplyAsync(supplyOne, null); },
2705 <
2706 <            () -> { CompletableFuture.runAsync(null); },
2707 <            () -> { CompletableFuture.runAsync(null, exec); },
2708 <            () -> { CompletableFuture.runAsync(() -> {}, null); },
2709 <
2710 <            () -> { f.completeExceptionally(null); },
2711 <
2712 <            () -> { f.thenApply(null); },
2713 <            () -> { f.thenApplyAsync(null); },
2714 <            () -> { f.thenApplyAsync((x) -> x, null); },
2715 <            () -> { f.thenApplyAsync(null, exec); },
2716 <
2717 <            () -> { f.thenAccept(null); },
2718 <            () -> { f.thenAcceptAsync(null); },
2719 <            () -> { f.thenAcceptAsync((x) -> { ; }, null); },
2720 <            () -> { f.thenAcceptAsync(null, exec); },
2721 <
2722 <            () -> { f.thenRun(null); },
2723 <            () -> { f.thenRunAsync(null); },
2724 <            () -> { f.thenRunAsync(() -> { ; }, null); },
2725 <            () -> { f.thenRunAsync(null, exec); },
2726 <
2727 <            () -> { f.thenCombine(g, null); },
2728 <            () -> { f.thenCombineAsync(g, null); },
2729 <            () -> { f.thenCombineAsync(g, null, exec); },
2730 <            () -> { f.thenCombine(nullFuture, (x, y) -> x); },
2731 <            () -> { f.thenCombineAsync(nullFuture, (x, y) -> x); },
2732 <            () -> { f.thenCombineAsync(nullFuture, (x, y) -> x, exec); },
2733 <            () -> { f.thenCombineAsync(g, (x, y) -> x, null); },
2734 <
2735 <            () -> { f.thenAcceptBoth(g, null); },
2736 <            () -> { f.thenAcceptBothAsync(g, null); },
2737 <            () -> { f.thenAcceptBothAsync(g, null, exec); },
2738 <            () -> { f.thenAcceptBoth(nullFuture, (x, y) -> {}); },
2739 <            () -> { f.thenAcceptBothAsync(nullFuture, (x, y) -> {}); },
2740 <            () -> { f.thenAcceptBothAsync(nullFuture, (x, y) -> {}, exec); },
2741 <            () -> { f.thenAcceptBothAsync(g, (x, y) -> {}, null); },
2742 <
2743 <            () -> { f.runAfterBoth(g, null); },
2744 <            () -> { f.runAfterBothAsync(g, null); },
2745 <            () -> { f.runAfterBothAsync(g, null, exec); },
2746 <            () -> { f.runAfterBoth(nullFuture, () -> {}); },
2747 <            () -> { f.runAfterBothAsync(nullFuture, () -> {}); },
2748 <            () -> { f.runAfterBothAsync(nullFuture, () -> {}, exec); },
2749 <            () -> { f.runAfterBothAsync(g, () -> {}, null); },
2750 <
2751 <            () -> { f.applyToEither(g, null); },
2752 <            () -> { f.applyToEitherAsync(g, null); },
2753 <            () -> { f.applyToEitherAsync(g, null, exec); },
2754 <            () -> { f.applyToEither(nullFuture, (x) -> x); },
2755 <            () -> { f.applyToEitherAsync(nullFuture, (x) -> x); },
2756 <            () -> { f.applyToEitherAsync(nullFuture, (x) -> x, exec); },
2757 <            () -> { f.applyToEitherAsync(g, (x) -> x, null); },
2758 <
2759 <            () -> { f.acceptEither(g, null); },
2760 <            () -> { f.acceptEitherAsync(g, null); },
2761 <            () -> { f.acceptEitherAsync(g, null, exec); },
2762 <            () -> { f.acceptEither(nullFuture, (x) -> {}); },
2763 <            () -> { f.acceptEitherAsync(nullFuture, (x) -> {}); },
2764 <            () -> { f.acceptEitherAsync(nullFuture, (x) -> {}, exec); },
2765 <            () -> { f.acceptEitherAsync(g, (x) -> {}, null); },
2766 <
2767 <            () -> { f.runAfterEither(g, null); },
2768 <            () -> { f.runAfterEitherAsync(g, null); },
2769 <            () -> { f.runAfterEitherAsync(g, null, exec); },
2770 <            () -> { f.runAfterEither(nullFuture, () -> {}); },
2771 <            () -> { f.runAfterEitherAsync(nullFuture, () -> {}); },
2772 <            () -> { f.runAfterEitherAsync(nullFuture, () -> {}, exec); },
2773 <            () -> { f.runAfterEitherAsync(g, () -> {}, null); },
2774 <
2775 <            () -> { f.thenCompose(null); },
2776 <            () -> { f.thenComposeAsync(null); },
2777 <            () -> { f.thenComposeAsync(new CompletableFutureInc(), null); },
2778 <            () -> { f.thenComposeAsync(null, exec); },
2779 <
2780 <            () -> { f.exceptionally(null); },
2781 <
2782 <            () -> { f.handle(null); },
2783 <
2784 <            () -> { CompletableFuture.allOf((CompletableFuture<?>)null); },
2785 <            () -> { CompletableFuture.allOf((CompletableFuture<?>[])null); },
2786 <            () -> { CompletableFuture.allOf(f, null); },
2787 <            () -> { CompletableFuture.allOf(null, f); },
2788 <
2789 <            () -> { CompletableFuture.anyOf((CompletableFuture<?>)null); },
2790 <            () -> { CompletableFuture.anyOf((CompletableFuture<?>[])null); },
2791 <            () -> { CompletableFuture.anyOf(f, null); },
2792 <            () -> { CompletableFuture.anyOf(null, f); },
2702 >            () -> CompletableFuture.supplyAsync(null),
2703 >            () -> CompletableFuture.supplyAsync(null, exec),
2704 >            () -> CompletableFuture.supplyAsync(new IntegerSupplier(ExecutionMode.DEFAULT, 42), null),
2705 >
2706 >            () -> CompletableFuture.runAsync(null),
2707 >            () -> CompletableFuture.runAsync(null, exec),
2708 >            () -> CompletableFuture.runAsync(() -> {}, null),
2709 >
2710 >            () -> f.completeExceptionally(null),
2711 >
2712 >            () -> f.thenApply(null),
2713 >            () -> f.thenApplyAsync(null),
2714 >            () -> f.thenApplyAsync((x) -> x, null),
2715 >            () -> f.thenApplyAsync(null, exec),
2716 >
2717 >            () -> f.thenAccept(null),
2718 >            () -> f.thenAcceptAsync(null),
2719 >            () -> f.thenAcceptAsync((x) -> {} , null),
2720 >            () -> f.thenAcceptAsync(null, exec),
2721 >
2722 >            () -> f.thenRun(null),
2723 >            () -> f.thenRunAsync(null),
2724 >            () -> f.thenRunAsync(() -> {} , null),
2725 >            () -> f.thenRunAsync(null, exec),
2726 >
2727 >            () -> f.thenCombine(g, null),
2728 >            () -> f.thenCombineAsync(g, null),
2729 >            () -> f.thenCombineAsync(g, null, exec),
2730 >            () -> f.thenCombine(nullFuture, (x, y) -> x),
2731 >            () -> f.thenCombineAsync(nullFuture, (x, y) -> x),
2732 >            () -> f.thenCombineAsync(nullFuture, (x, y) -> x, exec),
2733 >            () -> f.thenCombineAsync(g, (x, y) -> x, null),
2734 >
2735 >            () -> f.thenAcceptBoth(g, null),
2736 >            () -> f.thenAcceptBothAsync(g, null),
2737 >            () -> f.thenAcceptBothAsync(g, null, exec),
2738 >            () -> f.thenAcceptBoth(nullFuture, (x, y) -> {}),
2739 >            () -> f.thenAcceptBothAsync(nullFuture, (x, y) -> {}),
2740 >            () -> f.thenAcceptBothAsync(nullFuture, (x, y) -> {}, exec),
2741 >            () -> f.thenAcceptBothAsync(g, (x, y) -> {}, null),
2742 >
2743 >            () -> f.runAfterBoth(g, null),
2744 >            () -> f.runAfterBothAsync(g, null),
2745 >            () -> f.runAfterBothAsync(g, null, exec),
2746 >            () -> f.runAfterBoth(nullFuture, () -> {}),
2747 >            () -> f.runAfterBothAsync(nullFuture, () -> {}),
2748 >            () -> f.runAfterBothAsync(nullFuture, () -> {}, exec),
2749 >            () -> f.runAfterBothAsync(g, () -> {}, null),
2750 >
2751 >            () -> f.applyToEither(g, null),
2752 >            () -> f.applyToEitherAsync(g, null),
2753 >            () -> f.applyToEitherAsync(g, null, exec),
2754 >            () -> f.applyToEither(nullFuture, (x) -> x),
2755 >            () -> f.applyToEitherAsync(nullFuture, (x) -> x),
2756 >            () -> f.applyToEitherAsync(nullFuture, (x) -> x, exec),
2757 >            () -> f.applyToEitherAsync(g, (x) -> x, null),
2758 >
2759 >            () -> f.acceptEither(g, null),
2760 >            () -> f.acceptEitherAsync(g, null),
2761 >            () -> f.acceptEitherAsync(g, null, exec),
2762 >            () -> f.acceptEither(nullFuture, (x) -> {}),
2763 >            () -> f.acceptEitherAsync(nullFuture, (x) -> {}),
2764 >            () -> f.acceptEitherAsync(nullFuture, (x) -> {}, exec),
2765 >            () -> f.acceptEitherAsync(g, (x) -> {}, null),
2766 >
2767 >            () -> f.runAfterEither(g, null),
2768 >            () -> f.runAfterEitherAsync(g, null),
2769 >            () -> f.runAfterEitherAsync(g, null, exec),
2770 >            () -> f.runAfterEither(nullFuture, () -> {}),
2771 >            () -> f.runAfterEitherAsync(nullFuture, () -> {}),
2772 >            () -> f.runAfterEitherAsync(nullFuture, () -> {}, exec),
2773 >            () -> f.runAfterEitherAsync(g, () -> {}, null),
2774 >
2775 >            () -> f.thenCompose(null),
2776 >            () -> f.thenComposeAsync(null),
2777 >            () -> f.thenComposeAsync(new CompletableFutureInc(ExecutionMode.EXECUTOR), null),
2778 >            () -> f.thenComposeAsync(null, exec),
2779 >
2780 >            () -> f.exceptionally(null),
2781 >
2782 >            () -> f.handle(null),
2783 >
2784 >            () -> CompletableFuture.allOf((CompletableFuture<?>)null),
2785 >            () -> CompletableFuture.allOf((CompletableFuture<?>[])null),
2786 >            () -> CompletableFuture.allOf(f, null),
2787 >            () -> CompletableFuture.allOf(null, f),
2788 >
2789 >            () -> CompletableFuture.anyOf((CompletableFuture<?>)null),
2790 >            () -> CompletableFuture.anyOf((CompletableFuture<?>[])null),
2791 >            () -> CompletableFuture.anyOf(f, null),
2792 >            () -> CompletableFuture.anyOf(null, f),
2793 >
2794 >            () -> f.obtrudeException(null),
2795          };
2796  
2797          assertThrows(NullPointerException.class, throwingActions);
2798 +        assertEquals(0, exec.count.get());
2799      }
2800  
2801 +    /**
2802 +     * toCompletableFuture returns this CompletableFuture.
2803 +     */
2804 +    public void testToCompletableFuture() {
2805 +        CompletableFuture<Integer> f = new CompletableFuture<>();
2806 +        assertSame(f, f.toCompletableFuture());
2807 +    }
2808 +
2809 +    /**
2810 +     * whenComplete action executes on normal completion, propagating
2811 +     * source result.
2812 +     */
2813 +    public void testWhenComplete_normalCompletion1() {
2814 +        for (ExecutionMode m : ExecutionMode.values())
2815 +        for (boolean createIncomplete : new boolean[] { true, false })
2816 +        for (Integer v1 : new Integer[] { 1, null })
2817 +    {
2818 +        final AtomicInteger a = new AtomicInteger(0);
2819 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2820 +        if (!createIncomplete) f.complete(v1);
2821 +        final CompletableFuture<Integer> g = m.whenComplete
2822 +            (f,
2823 +             (Integer x, Throwable t) -> {
2824 +                threadAssertSame(x, v1);
2825 +                threadAssertNull(t);
2826 +                a.getAndIncrement();
2827 +            });
2828 +        if (createIncomplete) f.complete(v1);
2829 +
2830 +        checkCompletedNormally(g, v1);
2831 +        checkCompletedNormally(f, v1);
2832 +        assertEquals(1, a.get());
2833 +    }}
2834 +
2835 +    /**
2836 +     * whenComplete action executes on exceptional completion, propagating
2837 +     * source result.
2838 +     */
2839 +    public void testWhenComplete_exceptionalCompletion() {
2840 +        for (ExecutionMode m : ExecutionMode.values())
2841 +        for (boolean createIncomplete : new boolean[] { true, false })
2842 +        for (Integer v1 : new Integer[] { 1, null })
2843 +    {
2844 +        final AtomicInteger a = new AtomicInteger(0);
2845 +        final CFException ex = new CFException();
2846 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2847 +        if (!createIncomplete) f.completeExceptionally(ex);
2848 +        final CompletableFuture<Integer> g = m.whenComplete
2849 +            (f,
2850 +             (Integer x, Throwable t) -> {
2851 +                threadAssertNull(x);
2852 +                threadAssertSame(t, ex);
2853 +                a.getAndIncrement();
2854 +            });
2855 +        if (createIncomplete) f.completeExceptionally(ex);
2856 +        checkCompletedWithWrappedCFException(f, ex);
2857 +        checkCompletedWithWrappedCFException(g, ex);
2858 +        assertEquals(1, a.get());
2859 +    }}
2860 +
2861 +    /**
2862 +     * whenComplete action executes on cancelled source, propagating
2863 +     * CancellationException.
2864 +     */
2865 +    public void testWhenComplete_sourceCancelled() {
2866 +        for (ExecutionMode m : ExecutionMode.values())
2867 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2868 +        for (boolean createIncomplete : new boolean[] { true, false })
2869 +    {
2870 +        final AtomicInteger a = new AtomicInteger(0);
2871 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2872 +        if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
2873 +        final CompletableFuture<Integer> g = m.whenComplete
2874 +            (f,
2875 +             (Integer x, Throwable t) -> {
2876 +                threadAssertNull(x);
2877 +                threadAssertTrue(t instanceof CancellationException);
2878 +                a.getAndIncrement();
2879 +            });
2880 +        if (createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
2881 +
2882 +        //try { g.join(); } catch (Throwable t) { throw new Error(t); }
2883 +        checkCompletedWithWrappedCancellationException(g);
2884 +        checkCancelled(f);
2885 +        assertEquals(1, a.get());
2886 +    }}
2887 +
2888 +    /**
2889 +     * If a whenComplete action throws an exception when triggered by
2890 +     * a normal completion, it completes exceptionally
2891 +     */
2892 +    public void testWhenComplete_actionFailed() {
2893 +        for (boolean createIncomplete : new boolean[] { true, false })
2894 +        for (ExecutionMode m : ExecutionMode.values())
2895 +        for (Integer v1 : new Integer[] { 1, null })
2896 +    {
2897 +        final AtomicInteger a = new AtomicInteger(0);
2898 +        final CFException ex = new CFException();
2899 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2900 +        if (!createIncomplete) f.complete(v1);
2901 +        final CompletableFuture<Integer> g = m.whenComplete
2902 +            (f,
2903 +             (Integer x, Throwable t) -> {
2904 +                threadAssertSame(x, v1);
2905 +                threadAssertNull(t);
2906 +                a.getAndIncrement();
2907 +                throw ex;
2908 +            });
2909 +        if (createIncomplete) f.complete(v1);
2910 +        checkCompletedNormally(f, v1);
2911 +        checkCompletedWithWrappedCFException(g, ex);
2912 +        assertEquals(1, a.get());
2913 +    }}
2914 +
2915 +    /**
2916 +     * If a whenComplete action throws an exception when triggered by
2917 +     * a source completion that also throws an exception, the source
2918 +     * exception takes precedence.
2919 +     */
2920 +    public void testWhenComplete_actionFailedSourceFailed() {
2921 +        for (boolean createIncomplete : new boolean[] { true, false })
2922 +        for (ExecutionMode m : ExecutionMode.values())
2923 +        for (Integer v1 : new Integer[] { 1, null })
2924 +    {
2925 +        final AtomicInteger a = new AtomicInteger(0);
2926 +        final CFException ex1 = new CFException();
2927 +        final CFException ex2 = new CFException();
2928 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2929 +
2930 +        if (!createIncomplete) f.completeExceptionally(ex1);
2931 +        final CompletableFuture<Integer> g = m.whenComplete
2932 +            (f,
2933 +             (Integer x, Throwable t) -> {
2934 +                threadAssertSame(t, ex1);
2935 +                threadAssertNull(x);
2936 +                a.getAndIncrement();
2937 +                throw ex2;
2938 +            });
2939 +        if (createIncomplete) f.completeExceptionally(ex1);
2940 +
2941 +        checkCompletedWithWrappedCFException(f, ex1);
2942 +        checkCompletedWithWrappedCFException(g, ex1);
2943 +        assertEquals(1, a.get());
2944 +    }}
2945 +
2946   }

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