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Comparing jsr166/src/test/tck/CompletableFutureTest.java (file contents):
Revision 1.4 by jsr166, Sun Feb 10 21:18:25 2013 UTC vs.
Revision 1.94 by jsr166, Wed Jun 18 02:37:38 2014 UTC

# Line 7 | Line 7
7  
8   import junit.framework.*;
9   import java.util.concurrent.Callable;
10 + import java.util.concurrent.Executor;
11 + import java.util.concurrent.ExecutorService;
12 + import java.util.concurrent.Executors;
13   import java.util.concurrent.CancellationException;
14   import java.util.concurrent.CountDownLatch;
15   import java.util.concurrent.ExecutionException;
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;
25   import static java.util.concurrent.TimeUnit.SECONDS;
26   import java.util.*;
27 + import java.util.function.Supplier;
28 + import java.util.function.Consumer;
29 + import java.util.function.BiConsumer;
30 + import java.util.function.Function;
31 + import java.util.function.BiFunction;
32  
33   public class CompletableFutureTest extends JSR166TestCase {
34  
# Line 27 | Line 39 | public class CompletableFutureTest exten
39          return new TestSuite(CompletableFutureTest.class);
40      }
41  
42 +    static class CFException extends RuntimeException {}
43 +
44      void checkIncomplete(CompletableFuture<?> f) {
45          assertFalse(f.isDone());
46          assertFalse(f.isCancelled());
# Line 42 | Line 56 | public class CompletableFutureTest exten
56          catch (Throwable fail) { threadUnexpectedException(fail); }
57      }
58  
59 <    void checkCompletedNormally(CompletableFuture<?> f, Object value) {
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 {
67 >            assertEquals(value, f.getNow(null));
68 >        } catch (Throwable fail) { threadUnexpectedException(fail); }
69 >        try {
70 >            assertEquals(value, f.get());
71 >        } catch (Throwable fail) { threadUnexpectedException(fail); }
72          assertTrue(f.isDone());
73          assertFalse(f.isCancelled());
74 +        assertFalse(f.isCompletedExceptionally());
75          assertTrue(f.toString().contains("[Completed normally]"));
76 +    }
77 +
78 +    void checkCompletedWithWrappedCFException(CompletableFuture<?> f) {
79 +        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) {
89 +            assertTrue(success.getCause() instanceof CFException);
90 +        }
91 +        try {
92 +            f.getNow(null);
93 +            shouldThrow();
94 +        } catch (CompletionException success) {
95 +            assertTrue(success.getCause() instanceof CFException);
96 +        }
97 +        try {
98 +            f.get();
99 +            shouldThrow();
100 +        } catch (ExecutionException success) {
101 +            assertTrue(success.getCause() instanceof CFException);
102 +        } catch (Throwable fail) { threadUnexpectedException(fail); }
103 +        assertTrue(f.isDone());
104 +        assertFalse(f.isCancelled());
105 +        assertTrue(f.toString().contains("[Completed exceptionally]"));
106 +    }
107 +
108 +    <U> void checkCompletedExceptionallyWithRootCause(CompletableFuture<U> f,
109 +                                                      Throwable ex) {
110 +        try {
111 +            f.get(LONG_DELAY_MS, MILLISECONDS);
112 +            shouldThrow();
113 +        } catch (ExecutionException success) {
114 +            assertSame(ex, success.getCause());
115 +        } catch (Throwable fail) { threadUnexpectedException(fail); }
116 +        try {
117 +            f.join();
118 +            shouldThrow();
119 +        } catch (CompletionException success) {
120 +            assertSame(ex, success.getCause());
121 +        }
122 +        try {
123 +            f.getNow(null);
124 +            shouldThrow();
125 +        } catch (CompletionException success) {
126 +            assertSame(ex, success.getCause());
127 +        }
128 +        try {
129 +            f.get();
130 +            shouldThrow();
131 +        } catch (ExecutionException success) {
132 +            assertSame(ex, success.getCause());
133 +        } catch (Throwable fail) { threadUnexpectedException(fail); }
134 +
135 +        assertTrue(f.isDone());
136 +        assertFalse(f.isCancelled());
137 +        assertTrue(f.toString().contains("[Completed exceptionally]"));
138 +    }
139 +
140 +    <U> void checkCompletedWithWrappedException(CompletableFuture<U> f,
141 +                                                Throwable ex) {
142 +        checkCompletedExceptionallyWithRootCause(f, ex);
143          try {
144 <            assertSame(value, f.join());
144 >            CompletableFuture<Throwable> spy = f.handle
145 >                ((U u, Throwable t) -> t);
146 >            assertTrue(spy.join() instanceof CompletionException);
147 >            assertSame(ex, spy.join().getCause());
148          } catch (Throwable fail) { threadUnexpectedException(fail); }
149 +    }
150 +
151 +    <U> void checkCompletedExceptionally(CompletableFuture<U> f, Throwable ex) {
152 +        checkCompletedExceptionallyWithRootCause(f, ex);
153          try {
154 <            assertSame(value, f.getNow(null));
154 >            CompletableFuture<Throwable> spy = f.handle
155 >                ((U u, Throwable t) -> t);
156 >            assertSame(ex, spy.join());
157          } catch (Throwable fail) { threadUnexpectedException(fail); }
158 +    }
159 +
160 +    void checkCancelled(CompletableFuture<?> f) {
161          try {
162 <            assertSame(value, f.get());
162 >            f.get(LONG_DELAY_MS, MILLISECONDS);
163 >            shouldThrow();
164 >        } catch (CancellationException success) {
165          } catch (Throwable fail) { threadUnexpectedException(fail); }
166          try {
167 <            assertSame(value, f.get(0L, SECONDS));
167 >            f.join();
168 >            shouldThrow();
169 >        } catch (CancellationException success) {}
170 >        try {
171 >            f.getNow(null);
172 >            shouldThrow();
173 >        } catch (CancellationException success) {}
174 >        try {
175 >            f.get();
176 >            shouldThrow();
177 >        } catch (CancellationException success) {
178          } catch (Throwable fail) { threadUnexpectedException(fail); }
179 +        assertTrue(f.isDone());
180 +        assertTrue(f.isCompletedExceptionally());
181 +        assertTrue(f.isCancelled());
182 +        assertTrue(f.toString().contains("[Completed exceptionally]"));
183 +    }
184 +
185 +    void checkCompletedWithWrappedCancellationException(CompletableFuture<?> f) {
186 +        try {
187 +            f.get(LONG_DELAY_MS, MILLISECONDS);
188 +            shouldThrow();
189 +        } catch (ExecutionException success) {
190 +            assertTrue(success.getCause() instanceof CancellationException);
191 +        } catch (Throwable fail) { threadUnexpectedException(fail); }
192 +        try {
193 +            f.join();
194 +            shouldThrow();
195 +        } catch (CompletionException success) {
196 +            assertTrue(success.getCause() instanceof CancellationException);
197 +        }
198 +        try {
199 +            f.getNow(null);
200 +            shouldThrow();
201 +        } catch (CompletionException success) {
202 +            assertTrue(success.getCause() instanceof CancellationException);
203 +        }
204 +        try {
205 +            f.get();
206 +            shouldThrow();
207 +        } catch (ExecutionException success) {
208 +            assertTrue(success.getCause() instanceof CancellationException);
209 +        } catch (Throwable fail) { threadUnexpectedException(fail); }
210 +        assertTrue(f.isDone());
211 +        assertFalse(f.isCancelled());
212 +        assertTrue(f.isCompletedExceptionally());
213 +        assertTrue(f.toString().contains("[Completed exceptionally]"));
214 +    }
215 +
216 +    /**
217 +     * A newly constructed CompletableFuture is incomplete, as indicated
218 +     * by methods isDone, isCancelled, and getNow
219 +     */
220 +    public void testConstructor() {
221 +        CompletableFuture<Integer> f = new CompletableFuture<>();
222 +        checkIncomplete(f);
223 +    }
224 +
225 +    /**
226 +     * complete completes normally, as indicated by methods isDone,
227 +     * isCancelled, join, get, and getNow
228 +     */
229 +    public void testComplete() {
230 +        for (Integer v1 : new Integer[] { 1, null })
231 +    {
232 +        CompletableFuture<Integer> f = new CompletableFuture<>();
233 +        checkIncomplete(f);
234 +        assertTrue(f.complete(v1));
235 +        assertFalse(f.complete(v1));
236 +        checkCompletedNormally(f, v1);
237 +    }}
238 +
239 +    /**
240 +     * completeExceptionally completes exceptionally, as indicated by
241 +     * methods isDone, isCancelled, join, get, and getNow
242 +     */
243 +    public void testCompleteExceptionally() {
244 +        CompletableFuture<Integer> f = new CompletableFuture<>();
245 +        CFException ex = new CFException();
246 +        checkIncomplete(f);
247 +        f.completeExceptionally(ex);
248 +        checkCompletedExceptionally(f, ex);
249      }
250  
251 <    // XXXX Just a skeleton implementation for now.
252 <    public void testTODO() {
253 <        fail("Please add some real tests!");
251 >    /**
252 >     * cancel completes exceptionally and reports cancelled, as indicated by
253 >     * methods isDone, isCancelled, join, get, and getNow
254 >     */
255 >    public void testCancel() {
256 >        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
257 >    {
258 >        CompletableFuture<Integer> f = new CompletableFuture<>();
259 >        checkIncomplete(f);
260 >        assertTrue(f.cancel(true));
261 >        assertTrue(f.cancel(true));
262 >        checkCancelled(f);
263 >    }}
264 >
265 >    /**
266 >     * obtrudeValue forces completion with given value
267 >     */
268 >    public void testObtrudeValue() {
269 >        CompletableFuture<Integer> f = new CompletableFuture<>();
270 >        checkIncomplete(f);
271 >        assertTrue(f.complete(one));
272 >        checkCompletedNormally(f, one);
273 >        f.obtrudeValue(three);
274 >        checkCompletedNormally(f, three);
275 >        f.obtrudeValue(two);
276 >        checkCompletedNormally(f, two);
277 >        f = new CompletableFuture<>();
278 >        f.obtrudeValue(three);
279 >        checkCompletedNormally(f, three);
280 >        f.obtrudeValue(null);
281 >        checkCompletedNormally(f, null);
282 >        f = new CompletableFuture<>();
283 >        f.completeExceptionally(new CFException());
284 >        f.obtrudeValue(four);
285 >        checkCompletedNormally(f, four);
286      }
287  
288 +    /**
289 +     * obtrudeException forces completion with given exception
290 +     */
291 +    public void testObtrudeException() {
292 +        for (Integer v1 : new Integer[] { 1, null })
293 +    {
294 +        CFException ex;
295 +        CompletableFuture<Integer> f;
296 +
297 +        f = new CompletableFuture<>();
298 +        assertTrue(f.complete(v1));
299 +        for (int i = 0; i < 2; i++) {
300 +            f.obtrudeException(ex = new CFException());
301 +            checkCompletedExceptionally(f, ex);
302 +        }
303 +
304 +        f = new CompletableFuture<>();
305 +        for (int i = 0; i < 2; i++) {
306 +            f.obtrudeException(ex = new CFException());
307 +            checkCompletedExceptionally(f, ex);
308 +        }
309 +
310 +        f = new CompletableFuture<>();
311 +        f.completeExceptionally(ex = new CFException());
312 +        f.obtrudeValue(v1);
313 +        checkCompletedNormally(f, v1);
314 +        f.obtrudeException(ex = new CFException());
315 +        checkCompletedExceptionally(f, ex);
316 +        f.completeExceptionally(new CFException());
317 +        checkCompletedExceptionally(f, ex);
318 +        assertFalse(f.complete(v1));
319 +        checkCompletedExceptionally(f, ex);
320 +    }}
321 +
322 +    /**
323 +     * getNumberOfDependents returns number of dependent tasks
324 +     */
325 +    public void testGetNumberOfDependents() {
326 +        for (ExecutionMode m : ExecutionMode.values())
327 +        for (Integer v1 : new Integer[] { 1, null })
328 +    {
329 +        CompletableFuture<Integer> f = new CompletableFuture<>();
330 +        assertEquals(0, f.getNumberOfDependents());
331 +        final CompletableFuture<Void> g = m.thenRun(f, new Noop(m));
332 +        assertEquals(1, f.getNumberOfDependents());
333 +        assertEquals(0, g.getNumberOfDependents());
334 +        final CompletableFuture<Void> h = m.thenRun(f, new Noop(m));
335 +        assertEquals(2, f.getNumberOfDependents());
336 +        assertEquals(0, h.getNumberOfDependents());
337 +        assertTrue(f.complete(v1));
338 +        checkCompletedNormally(g, null);
339 +        checkCompletedNormally(h, null);
340 +        assertEquals(0, f.getNumberOfDependents());
341 +        assertEquals(0, g.getNumberOfDependents());
342 +        assertEquals(0, h.getNumberOfDependents());
343 +    }}
344 +
345 +    /**
346 +     * toString indicates current completion state
347 +     */
348      public void testToString() {
349          CompletableFuture<String> f;
350  
351          f = new CompletableFuture<String>();
352          assertTrue(f.toString().contains("[Not completed]"));
353  
354 <        f.complete("foo");
354 >        assertTrue(f.complete("foo"));
355          assertTrue(f.toString().contains("[Completed normally]"));
356  
357          f = new CompletableFuture<String>();
358 <        f.completeExceptionally(new IndexOutOfBoundsException());
358 >        assertTrue(f.completeExceptionally(new IndexOutOfBoundsException()));
359          assertTrue(f.toString().contains("[Completed exceptionally]"));
360 +
361 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false }) {
362 +            f = new CompletableFuture<String>();
363 +            assertTrue(f.cancel(mayInterruptIfRunning));
364 +            assertTrue(f.toString().contains("[Completed exceptionally]"));
365 +        }
366 +    }
367 +
368 +    /**
369 +     * completedFuture returns a completed CompletableFuture with given value
370 +     */
371 +    public void testCompletedFuture() {
372 +        CompletableFuture<String> f = CompletableFuture.completedFuture("test");
373 +        checkCompletedNormally(f, "test");
374 +    }
375 +
376 +    abstract class CheckedAction {
377 +        int invocationCount = 0;
378 +        final ExecutionMode m;
379 +        CheckedAction(ExecutionMode m) { this.m = m; }
380 +        void invoked() {
381 +            m.checkExecutionMode();
382 +            assertEquals(0, invocationCount++);
383 +        }
384 +        void assertNotInvoked() { assertEquals(0, invocationCount); }
385 +        void assertInvoked() { assertEquals(1, invocationCount); }
386 +    }
387 +
388 +    abstract class CheckedIntegerAction extends CheckedAction {
389 +        Integer value;
390 +        CheckedIntegerAction(ExecutionMode m) { super(m); }
391 +        void assertValue(Integer expected) {
392 +            assertInvoked();
393 +            assertEquals(expected, value);
394 +        }
395 +    }
396 +
397 +    class IntegerSupplier extends CheckedAction
398 +        implements Supplier<Integer>
399 +    {
400 +        final Integer value;
401 +        IntegerSupplier(ExecutionMode m, Integer value) {
402 +            super(m);
403 +            this.value = value;
404 +        }
405 +        public Integer get() {
406 +            invoked();
407 +            return value;
408 +        }
409 +    }
410 +
411 +    // A function that handles and produces null values as well.
412 +    static Integer inc(Integer x) {
413 +        return (x == null) ? null : x + 1;
414 +    }
415 +
416 +    class NoopConsumer extends CheckedIntegerAction
417 +        implements Consumer<Integer>
418 +    {
419 +        NoopConsumer(ExecutionMode m) { super(m); }
420 +        public void accept(Integer x) {
421 +            invoked();
422 +            value = x;
423 +        }
424 +    }
425 +
426 +    class IncFunction extends CheckedIntegerAction
427 +        implements Function<Integer,Integer>
428 +    {
429 +        IncFunction(ExecutionMode m) { super(m); }
430 +        public Integer apply(Integer x) {
431 +            invoked();
432 +            return value = inc(x);
433 +        }
434      }
435  
436 +    // Choose non-commutative actions for better coverage
437 +    // A non-commutative function that handles and produces null values as well.
438 +    static Integer subtract(Integer x, Integer y) {
439 +        return (x == null && y == null) ? null :
440 +            ((x == null) ? 42 : x.intValue())
441 +            - ((y == null) ? 99 : y.intValue());
442 +    }
443 +
444 +    class SubtractAction extends CheckedIntegerAction
445 +        implements BiConsumer<Integer, Integer>
446 +    {
447 +        SubtractAction(ExecutionMode m) { super(m); }
448 +        public void accept(Integer x, Integer y) {
449 +            invoked();
450 +            value = subtract(x, y);
451 +        }
452 +    }
453 +
454 +    class SubtractFunction extends CheckedIntegerAction
455 +        implements BiFunction<Integer, Integer, Integer>
456 +    {
457 +        SubtractFunction(ExecutionMode m) { super(m); }
458 +        public Integer apply(Integer x, Integer y) {
459 +            invoked();
460 +            return value = subtract(x, y);
461 +        }
462 +    }
463 +
464 +    class Noop extends CheckedAction implements Runnable {
465 +        Noop(ExecutionMode m) { super(m); }
466 +        public void run() {
467 +            invoked();
468 +        }
469 +    }
470 +
471 +    class FailingSupplier extends CheckedAction
472 +        implements Supplier<Integer>
473 +    {
474 +        FailingSupplier(ExecutionMode m) { super(m); }
475 +        public Integer get() {
476 +            invoked();
477 +            throw new CFException();
478 +        }
479 +    }
480 +
481 +    class FailingConsumer extends CheckedIntegerAction
482 +        implements Consumer<Integer>
483 +    {
484 +        FailingConsumer(ExecutionMode m) { super(m); }
485 +        public void accept(Integer x) {
486 +            invoked();
487 +            value = x;
488 +            throw new CFException();
489 +        }
490 +    }
491 +
492 +    class FailingBiConsumer extends CheckedIntegerAction
493 +        implements BiConsumer<Integer, Integer>
494 +    {
495 +        FailingBiConsumer(ExecutionMode m) { super(m); }
496 +        public void accept(Integer x, Integer y) {
497 +            invoked();
498 +            value = subtract(x, y);
499 +            throw new CFException();
500 +        }
501 +    }
502 +
503 +    class FailingFunction extends CheckedIntegerAction
504 +        implements Function<Integer, Integer>
505 +    {
506 +        FailingFunction(ExecutionMode m) { super(m); }
507 +        public Integer apply(Integer x) {
508 +            invoked();
509 +            value = x;
510 +            throw new CFException();
511 +        }
512 +    }
513 +
514 +    class FailingBiFunction extends CheckedIntegerAction
515 +        implements BiFunction<Integer, Integer, Integer>
516 +    {
517 +        FailingBiFunction(ExecutionMode m) { super(m); }
518 +        public Integer apply(Integer x, Integer y) {
519 +            invoked();
520 +            value = subtract(x, y);
521 +            throw new CFException();
522 +        }
523 +    }
524 +
525 +    class FailingRunnable extends CheckedAction implements Runnable {
526 +        FailingRunnable(ExecutionMode m) { super(m); }
527 +        public void run() {
528 +            invoked();
529 +            throw new CFException();
530 +        }
531 +    }
532 +
533 +
534 +    class CompletableFutureInc extends CheckedIntegerAction
535 +        implements Function<Integer, CompletableFuture<Integer>>
536 +    {
537 +        CompletableFutureInc(ExecutionMode m) { super(m); }
538 +        public CompletableFuture<Integer> apply(Integer x) {
539 +            invoked();
540 +            value = x;
541 +            CompletableFuture<Integer> f = new CompletableFuture<>();
542 +            assertTrue(f.complete(inc(x)));
543 +            return f;
544 +        }
545 +    }
546 +
547 +    class FailingCompletableFutureFunction extends CheckedIntegerAction
548 +        implements Function<Integer, CompletableFuture<Integer>>
549 +    {
550 +        FailingCompletableFutureFunction(ExecutionMode m) { super(m); }
551 +        public CompletableFuture<Integer> apply(Integer x) {
552 +            invoked();
553 +            value = x;
554 +            throw new CFException();
555 +        }
556 +    }
557 +
558 +    // Used for explicit executor tests
559 +    static final class ThreadExecutor implements Executor {
560 +        final AtomicInteger count = new AtomicInteger(0);
561 +        static final ThreadGroup tg = new ThreadGroup("ThreadExecutor");
562 +        static boolean startedCurrentThread() {
563 +            return Thread.currentThread().getThreadGroup() == tg;
564 +        }
565 +
566 +        public void execute(Runnable r) {
567 +            count.getAndIncrement();
568 +            new Thread(tg, r).start();
569 +        }
570 +    }
571 +
572 +    /**
573 +     * Permits the testing of parallel code for the 3 different
574 +     * execution modes without copy/pasting all the test methods.
575 +     */
576 +    enum ExecutionMode {
577 +        DEFAULT {
578 +            public void checkExecutionMode() {
579 +                assertFalse(ThreadExecutor.startedCurrentThread());
580 +                assertNull(ForkJoinTask.getPool());
581 +            }
582 +            public CompletableFuture<Void> runAsync(Runnable a) {
583 +                throw new UnsupportedOperationException();
584 +            }
585 +            public <U> CompletableFuture<U> supplyAsync(Supplier<U> a) {
586 +                throw new UnsupportedOperationException();
587 +            }
588 +            public <T> CompletableFuture<Void> thenRun
589 +                (CompletableFuture<T> f, Runnable a) {
590 +                return f.thenRun(a);
591 +            }
592 +            public <T> CompletableFuture<Void> thenAccept
593 +                (CompletableFuture<T> f, Consumer<? super T> a) {
594 +                return f.thenAccept(a);
595 +            }
596 +            public <T,U> CompletableFuture<U> thenApply
597 +                (CompletableFuture<T> f, Function<? super T,U> a) {
598 +                return f.thenApply(a);
599 +            }
600 +            public <T,U> CompletableFuture<U> thenCompose
601 +                (CompletableFuture<T> f,
602 +                 Function<? super T,? extends CompletionStage<U>> a) {
603 +                return f.thenCompose(a);
604 +            }
605 +            public <T,U> CompletableFuture<U> handle
606 +                (CompletableFuture<T> f,
607 +                 BiFunction<? super T,Throwable,? extends U> a) {
608 +                return f.handle(a);
609 +            }
610 +            public <T> CompletableFuture<T> whenComplete
611 +                (CompletableFuture<T> f,
612 +                 BiConsumer<? super T,? super Throwable> a) {
613 +                return f.whenComplete(a);
614 +            }
615 +            public <T,U> CompletableFuture<Void> runAfterBoth
616 +                (CompletableFuture<T> f, CompletableFuture<U> g, Runnable a) {
617 +                return f.runAfterBoth(g, a);
618 +            }
619 +            public <T,U> CompletableFuture<Void> thenAcceptBoth
620 +                (CompletableFuture<T> f,
621 +                 CompletionStage<? extends U> g,
622 +                 BiConsumer<? super T,? super U> a) {
623 +                return f.thenAcceptBoth(g, a);
624 +            }
625 +            public <T,U,V> CompletableFuture<V> thenCombine
626 +                (CompletableFuture<T> f,
627 +                 CompletionStage<? extends U> g,
628 +                 BiFunction<? super T,? super U,? extends V> a) {
629 +                return f.thenCombine(g, a);
630 +            }
631 +            public <T> CompletableFuture<Void> runAfterEither
632 +                (CompletableFuture<T> f,
633 +                 CompletionStage<?> g,
634 +                 java.lang.Runnable a) {
635 +                return f.runAfterEither(g, a);
636 +            }
637 +            public <T> CompletableFuture<Void> acceptEither
638 +                (CompletableFuture<T> f,
639 +                 CompletionStage<? extends T> g,
640 +                 Consumer<? super T> a) {
641 +                return f.acceptEither(g, a);
642 +            }
643 +            public <T,U> CompletableFuture<U> applyToEither
644 +                (CompletableFuture<T> f,
645 +                 CompletionStage<? extends T> g,
646 +                 Function<? super T,U> a) {
647 +                return f.applyToEither(g, a);
648 +            }
649 +        },
650 +
651 +        ASYNC {
652 +            public void checkExecutionMode() {
653 +                assertSame(ForkJoinPool.commonPool(),
654 +                           ForkJoinTask.getPool());
655 +            }
656 +            public CompletableFuture<Void> runAsync(Runnable a) {
657 +                return CompletableFuture.runAsync(a);
658 +            }
659 +            public <U> CompletableFuture<U> supplyAsync(Supplier<U> a) {
660 +                return CompletableFuture.supplyAsync(a);
661 +            }
662 +            public <T> CompletableFuture<Void> thenRun
663 +                (CompletableFuture<T> f, Runnable a) {
664 +                return f.thenRunAsync(a);
665 +            }
666 +            public <T> CompletableFuture<Void> thenAccept
667 +                (CompletableFuture<T> f, Consumer<? super T> a) {
668 +                return f.thenAcceptAsync(a);
669 +            }
670 +            public <T,U> CompletableFuture<U> thenApply
671 +                (CompletableFuture<T> f, Function<? super T,U> a) {
672 +                return f.thenApplyAsync(a);
673 +            }
674 +            public <T,U> CompletableFuture<U> thenCompose
675 +                (CompletableFuture<T> f,
676 +                 Function<? super T,? extends CompletionStage<U>> a) {
677 +                return f.thenComposeAsync(a);
678 +            }
679 +            public <T,U> CompletableFuture<U> handle
680 +                (CompletableFuture<T> f,
681 +                 BiFunction<? super T,Throwable,? extends U> a) {
682 +                return f.handleAsync(a);
683 +            }
684 +            public <T> CompletableFuture<T> whenComplete
685 +                (CompletableFuture<T> f,
686 +                 BiConsumer<? super T,? super Throwable> a) {
687 +                return f.whenCompleteAsync(a);
688 +            }
689 +            public <T,U> CompletableFuture<Void> runAfterBoth
690 +                (CompletableFuture<T> f, CompletableFuture<U> g, Runnable a) {
691 +                return f.runAfterBothAsync(g, a);
692 +            }
693 +            public <T,U> CompletableFuture<Void> thenAcceptBoth
694 +                (CompletableFuture<T> f,
695 +                 CompletionStage<? extends U> g,
696 +                 BiConsumer<? super T,? super U> a) {
697 +                return f.thenAcceptBothAsync(g, a);
698 +            }
699 +            public <T,U,V> CompletableFuture<V> thenCombine
700 +                (CompletableFuture<T> f,
701 +                 CompletionStage<? extends U> g,
702 +                 BiFunction<? super T,? super U,? extends V> a) {
703 +                return f.thenCombineAsync(g, a);
704 +            }
705 +            public <T> CompletableFuture<Void> runAfterEither
706 +                (CompletableFuture<T> f,
707 +                 CompletionStage<?> g,
708 +                 java.lang.Runnable a) {
709 +                return f.runAfterEitherAsync(g, a);
710 +            }
711 +            public <T> CompletableFuture<Void> acceptEither
712 +                (CompletableFuture<T> f,
713 +                 CompletionStage<? extends T> g,
714 +                 Consumer<? super T> a) {
715 +                return f.acceptEitherAsync(g, a);
716 +            }
717 +            public <T,U> CompletableFuture<U> applyToEither
718 +                (CompletableFuture<T> f,
719 +                 CompletionStage<? extends T> g,
720 +                 Function<? super T,U> a) {
721 +                return f.applyToEitherAsync(g, a);
722 +            }
723 +        },
724 +
725 +        EXECUTOR {
726 +            public void checkExecutionMode() {
727 +                assertTrue(ThreadExecutor.startedCurrentThread());
728 +            }
729 +            public CompletableFuture<Void> runAsync(Runnable a) {
730 +                return CompletableFuture.runAsync(a, new ThreadExecutor());
731 +            }
732 +            public <U> CompletableFuture<U> supplyAsync(Supplier<U> a) {
733 +                return CompletableFuture.supplyAsync(a, new ThreadExecutor());
734 +            }
735 +            public <T> CompletableFuture<Void> thenRun
736 +                (CompletableFuture<T> f, Runnable a) {
737 +                return f.thenRunAsync(a, new ThreadExecutor());
738 +            }
739 +            public <T> CompletableFuture<Void> thenAccept
740 +                (CompletableFuture<T> f, Consumer<? super T> a) {
741 +                return f.thenAcceptAsync(a, new ThreadExecutor());
742 +            }
743 +            public <T,U> CompletableFuture<U> thenApply
744 +                (CompletableFuture<T> f, Function<? super T,U> a) {
745 +                return f.thenApplyAsync(a, new ThreadExecutor());
746 +            }
747 +            public <T,U> CompletableFuture<U> thenCompose
748 +                (CompletableFuture<T> f,
749 +                 Function<? super T,? extends CompletionStage<U>> a) {
750 +                return f.thenComposeAsync(a, new ThreadExecutor());
751 +            }
752 +            public <T,U> CompletableFuture<U> handle
753 +                (CompletableFuture<T> f,
754 +                 BiFunction<? super T,Throwable,? extends U> a) {
755 +                return f.handleAsync(a, new ThreadExecutor());
756 +            }
757 +            public <T> CompletableFuture<T> whenComplete
758 +                (CompletableFuture<T> f,
759 +                 BiConsumer<? super T,? super Throwable> a) {
760 +                return f.whenCompleteAsync(a, new ThreadExecutor());
761 +            }
762 +            public <T,U> CompletableFuture<Void> runAfterBoth
763 +                (CompletableFuture<T> f, CompletableFuture<U> g, Runnable a) {
764 +                return f.runAfterBothAsync(g, a, new ThreadExecutor());
765 +            }
766 +            public <T,U> CompletableFuture<Void> thenAcceptBoth
767 +                (CompletableFuture<T> f,
768 +                 CompletionStage<? extends U> g,
769 +                 BiConsumer<? super T,? super U> a) {
770 +                return f.thenAcceptBothAsync(g, a, new ThreadExecutor());
771 +            }
772 +            public <T,U,V> CompletableFuture<V> thenCombine
773 +                (CompletableFuture<T> f,
774 +                 CompletionStage<? extends U> g,
775 +                 BiFunction<? super T,? super U,? extends V> a) {
776 +                return f.thenCombineAsync(g, a, new ThreadExecutor());
777 +            }
778 +            public <T> CompletableFuture<Void> runAfterEither
779 +                (CompletableFuture<T> f,
780 +                 CompletionStage<?> g,
781 +                 java.lang.Runnable a) {
782 +                return f.runAfterEitherAsync(g, a, new ThreadExecutor());
783 +            }
784 +            public <T> CompletableFuture<Void> acceptEither
785 +                (CompletableFuture<T> f,
786 +                 CompletionStage<? extends T> g,
787 +                 Consumer<? super T> a) {
788 +                return f.acceptEitherAsync(g, a, new ThreadExecutor());
789 +            }
790 +            public <T,U> CompletableFuture<U> applyToEither
791 +                (CompletableFuture<T> f,
792 +                 CompletionStage<? extends T> g,
793 +                 Function<? super T,U> a) {
794 +                return f.applyToEitherAsync(g, a, new ThreadExecutor());
795 +            }
796 +        };
797 +
798 +        public abstract void checkExecutionMode();
799 +        public abstract CompletableFuture<Void> runAsync(Runnable a);
800 +        public abstract <U> CompletableFuture<U> supplyAsync(Supplier<U> a);
801 +        public abstract <T> CompletableFuture<Void> thenRun
802 +            (CompletableFuture<T> f, Runnable a);
803 +        public abstract <T> CompletableFuture<Void> thenAccept
804 +            (CompletableFuture<T> f, Consumer<? super T> a);
805 +        public abstract <T,U> CompletableFuture<U> thenApply
806 +            (CompletableFuture<T> f, Function<? super T,U> a);
807 +        public abstract <T,U> CompletableFuture<U> thenCompose
808 +            (CompletableFuture<T> f,
809 +             Function<? super T,? extends CompletionStage<U>> a);
810 +        public abstract <T,U> CompletableFuture<U> handle
811 +            (CompletableFuture<T> f,
812 +             BiFunction<? super T,Throwable,? extends U> a);
813 +        public abstract <T> CompletableFuture<T> whenComplete
814 +            (CompletableFuture<T> f,
815 +             BiConsumer<? super T,? super Throwable> a);
816 +        public abstract <T,U> CompletableFuture<Void> runAfterBoth
817 +            (CompletableFuture<T> f, CompletableFuture<U> g, Runnable a);
818 +        public abstract <T,U> CompletableFuture<Void> thenAcceptBoth
819 +            (CompletableFuture<T> f,
820 +             CompletionStage<? extends U> g,
821 +             BiConsumer<? super T,? super U> a);
822 +        public abstract <T,U,V> CompletableFuture<V> thenCombine
823 +            (CompletableFuture<T> f,
824 +             CompletionStage<? extends U> g,
825 +             BiFunction<? super T,? super U,? extends V> a);
826 +        public abstract <T> CompletableFuture<Void> runAfterEither
827 +            (CompletableFuture<T> f,
828 +             CompletionStage<?> g,
829 +             java.lang.Runnable a);
830 +        public abstract <T> CompletableFuture<Void> acceptEither
831 +            (CompletableFuture<T> f,
832 +             CompletionStage<? extends T> g,
833 +             Consumer<? super T> a);
834 +        public abstract <T,U> CompletableFuture<U> applyToEither
835 +            (CompletableFuture<T> f,
836 +             CompletionStage<? extends T> g,
837 +             Function<? super T,U> a);
838 +    }
839 +
840 +    /**
841 +     * exceptionally action is not invoked when source completes
842 +     * normally, and source result is propagated
843 +     */
844 +    public void testExceptionally_normalCompletion() {
845 +        for (boolean createIncomplete : new boolean[] { true, false })
846 +        for (Integer v1 : new Integer[] { 1, null })
847 +    {
848 +        final AtomicInteger a = new AtomicInteger(0);
849 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
850 +        if (!createIncomplete) assertTrue(f.complete(v1));
851 +        final CompletableFuture<Integer> g = f.exceptionally
852 +            ((Throwable t) -> {
853 +                // Should not be called
854 +                a.getAndIncrement();
855 +                throw new AssertionError();
856 +            });
857 +        if (createIncomplete) assertTrue(f.complete(v1));
858 +
859 +        checkCompletedNormally(g, v1);
860 +        checkCompletedNormally(f, v1);
861 +        assertEquals(0, a.get());
862 +    }}
863 +
864 +    /**
865 +     * exceptionally action completes with function value on source
866 +     * exception
867 +     */
868 +    public void testExceptionally_exceptionalCompletion() {
869 +        for (boolean createIncomplete : new boolean[] { true, false })
870 +        for (Integer v1 : new Integer[] { 1, null })
871 +    {
872 +        final AtomicInteger a = new AtomicInteger(0);
873 +        final CFException ex = new CFException();
874 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
875 +        if (!createIncomplete) f.completeExceptionally(ex);
876 +        final CompletableFuture<Integer> g = f.exceptionally
877 +            ((Throwable t) -> {
878 +                ExecutionMode.DEFAULT.checkExecutionMode();
879 +                threadAssertSame(t, ex);
880 +                a.getAndIncrement();
881 +                return v1;
882 +            });
883 +        if (createIncomplete) f.completeExceptionally(ex);
884 +
885 +        checkCompletedNormally(g, v1);
886 +        assertEquals(1, a.get());
887 +    }}
888 +
889 +    public void testExceptionally_exceptionalCompletionActionFailed() {
890 +        for (boolean createIncomplete : new boolean[] { true, false })
891 +        for (Integer v1 : new Integer[] { 1, null })
892 +    {
893 +        final AtomicInteger a = new AtomicInteger(0);
894 +        final CFException ex1 = new CFException();
895 +        final CFException ex2 = new CFException();
896 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
897 +        if (!createIncomplete) f.completeExceptionally(ex1);
898 +        final CompletableFuture<Integer> g = f.exceptionally
899 +            ((Throwable t) -> {
900 +                ExecutionMode.DEFAULT.checkExecutionMode();
901 +                threadAssertSame(t, ex1);
902 +                a.getAndIncrement();
903 +                throw ex2;
904 +            });
905 +        if (createIncomplete) f.completeExceptionally(ex1);
906 +
907 +        checkCompletedWithWrappedException(g, ex2);
908 +        assertEquals(1, a.get());
909 +    }}
910 +
911 +    /**
912 +     * whenComplete action executes on normal completion, propagating
913 +     * source result.
914 +     */
915 +    public void testWhenComplete_normalCompletion1() {
916 +        for (ExecutionMode m : ExecutionMode.values())
917 +        for (boolean createIncomplete : new boolean[] { true, false })
918 +        for (Integer v1 : new Integer[] { 1, null })
919 +    {
920 +        final AtomicInteger a = new AtomicInteger(0);
921 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
922 +        if (!createIncomplete) assertTrue(f.complete(v1));
923 +        final CompletableFuture<Integer> g = m.whenComplete
924 +            (f,
925 +             (Integer x, Throwable t) -> {
926 +                m.checkExecutionMode();
927 +                threadAssertSame(x, v1);
928 +                threadAssertNull(t);
929 +                a.getAndIncrement();
930 +            });
931 +        if (createIncomplete) assertTrue(f.complete(v1));
932 +
933 +        checkCompletedNormally(g, v1);
934 +        checkCompletedNormally(f, v1);
935 +        assertEquals(1, a.get());
936 +    }}
937 +
938 +    /**
939 +     * whenComplete action executes on exceptional completion, propagating
940 +     * source result.
941 +     */
942 +    public void testWhenComplete_exceptionalCompletion() {
943 +        for (ExecutionMode m : ExecutionMode.values())
944 +        for (boolean createIncomplete : new boolean[] { true, false })
945 +        for (Integer v1 : new Integer[] { 1, null })
946 +    {
947 +        final AtomicInteger a = new AtomicInteger(0);
948 +        final CFException ex = new CFException();
949 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
950 +        if (!createIncomplete) f.completeExceptionally(ex);
951 +        final CompletableFuture<Integer> g = m.whenComplete
952 +            (f,
953 +             (Integer x, Throwable t) -> {
954 +                m.checkExecutionMode();
955 +                threadAssertNull(x);
956 +                threadAssertSame(t, ex);
957 +                a.getAndIncrement();
958 +            });
959 +        if (createIncomplete) f.completeExceptionally(ex);
960 +
961 +        checkCompletedWithWrappedException(g, ex);
962 +        checkCompletedExceptionally(f, ex);
963 +        assertEquals(1, a.get());
964 +    }}
965 +
966 +    /**
967 +     * whenComplete action executes on cancelled source, propagating
968 +     * CancellationException.
969 +     */
970 +    public void testWhenComplete_sourceCancelled() {
971 +        for (ExecutionMode m : ExecutionMode.values())
972 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
973 +        for (boolean createIncomplete : new boolean[] { true, false })
974 +    {
975 +        final AtomicInteger a = new AtomicInteger(0);
976 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
977 +        if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
978 +        final CompletableFuture<Integer> g = m.whenComplete
979 +            (f,
980 +             (Integer x, Throwable t) -> {
981 +                m.checkExecutionMode();
982 +                threadAssertNull(x);
983 +                threadAssertTrue(t instanceof CancellationException);
984 +                a.getAndIncrement();
985 +            });
986 +        if (createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
987 +
988 +        checkCompletedWithWrappedCancellationException(g);
989 +        checkCancelled(f);
990 +        assertEquals(1, a.get());
991 +    }}
992 +
993 +    /**
994 +     * If a whenComplete action throws an exception when triggered by
995 +     * a normal completion, it completes exceptionally
996 +     */
997 +    public void testWhenComplete_actionFailed() {
998 +        for (boolean createIncomplete : new boolean[] { true, false })
999 +        for (ExecutionMode m : ExecutionMode.values())
1000 +        for (Integer v1 : new Integer[] { 1, null })
1001 +    {
1002 +        final AtomicInteger a = new AtomicInteger(0);
1003 +        final CFException ex = new CFException();
1004 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1005 +        if (!createIncomplete) assertTrue(f.complete(v1));
1006 +        final CompletableFuture<Integer> g = m.whenComplete
1007 +            (f,
1008 +             (Integer x, Throwable t) -> {
1009 +                m.checkExecutionMode();
1010 +                threadAssertSame(x, v1);
1011 +                threadAssertNull(t);
1012 +                a.getAndIncrement();
1013 +                throw ex;
1014 +            });
1015 +        if (createIncomplete) assertTrue(f.complete(v1));
1016 +
1017 +        checkCompletedWithWrappedException(g, ex);
1018 +        checkCompletedNormally(f, v1);
1019 +        assertEquals(1, a.get());
1020 +    }}
1021 +
1022 +    /**
1023 +     * If a whenComplete action throws an exception when triggered by
1024 +     * a source completion that also throws an exception, the source
1025 +     * exception takes precedence.
1026 +     */
1027 +    public void testWhenComplete_actionFailedSourceFailed() {
1028 +        for (boolean createIncomplete : new boolean[] { true, false })
1029 +        for (ExecutionMode m : ExecutionMode.values())
1030 +        for (Integer v1 : new Integer[] { 1, null })
1031 +    {
1032 +        final AtomicInteger a = new AtomicInteger(0);
1033 +        final CFException ex1 = new CFException();
1034 +        final CFException ex2 = new CFException();
1035 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1036 +
1037 +        if (!createIncomplete) f.completeExceptionally(ex1);
1038 +        final CompletableFuture<Integer> g = m.whenComplete
1039 +            (f,
1040 +             (Integer x, Throwable t) -> {
1041 +                m.checkExecutionMode();
1042 +                threadAssertSame(t, ex1);
1043 +                threadAssertNull(x);
1044 +                a.getAndIncrement();
1045 +                throw ex2;
1046 +            });
1047 +        if (createIncomplete) f.completeExceptionally(ex1);
1048 +
1049 +        checkCompletedWithWrappedException(g, ex1);
1050 +        checkCompletedExceptionally(f, ex1);
1051 +        assertEquals(1, a.get());
1052 +    }}
1053 +
1054 +    /**
1055 +     * handle action completes normally with function value on normal
1056 +     * completion of source
1057 +     */
1058 +    public void testHandle_normalCompletion() {
1059 +        for (ExecutionMode m : ExecutionMode.values())
1060 +        for (boolean createIncomplete : new boolean[] { true, false })
1061 +        for (Integer v1 : new Integer[] { 1, null })
1062 +    {
1063 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1064 +        final AtomicInteger a = new AtomicInteger(0);
1065 +        if (!createIncomplete) assertTrue(f.complete(v1));
1066 +        final CompletableFuture<Integer> g = m.handle
1067 +            (f,
1068 +             (Integer x, Throwable t) -> {
1069 +                m.checkExecutionMode();
1070 +                threadAssertSame(x, v1);
1071 +                threadAssertNull(t);
1072 +                a.getAndIncrement();
1073 +                return inc(v1);
1074 +            });
1075 +        if (createIncomplete) assertTrue(f.complete(v1));
1076 +
1077 +        checkCompletedNormally(g, inc(v1));
1078 +        checkCompletedNormally(f, v1);
1079 +        assertEquals(1, a.get());
1080 +    }}
1081 +
1082 +    /**
1083 +     * handle action completes normally with function value on
1084 +     * exceptional completion of source
1085 +     */
1086 +    public void testHandle_exceptionalCompletion() {
1087 +        for (ExecutionMode m : ExecutionMode.values())
1088 +        for (boolean createIncomplete : new boolean[] { true, false })
1089 +        for (Integer v1 : new Integer[] { 1, null })
1090 +    {
1091 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1092 +        final AtomicInteger a = new AtomicInteger(0);
1093 +        final CFException ex = new CFException();
1094 +        if (!createIncomplete) f.completeExceptionally(ex);
1095 +        final CompletableFuture<Integer> g = m.handle
1096 +            (f,
1097 +             (Integer x, Throwable t) -> {
1098 +                m.checkExecutionMode();
1099 +                threadAssertNull(x);
1100 +                threadAssertSame(t, ex);
1101 +                a.getAndIncrement();
1102 +                return v1;
1103 +            });
1104 +        if (createIncomplete) f.completeExceptionally(ex);
1105 +
1106 +        checkCompletedNormally(g, v1);
1107 +        checkCompletedExceptionally(f, ex);
1108 +        assertEquals(1, a.get());
1109 +    }}
1110 +
1111 +    /**
1112 +     * handle action completes normally with function value on
1113 +     * cancelled source
1114 +     */
1115 +    public void testHandle_sourceCancelled() {
1116 +        for (ExecutionMode m : ExecutionMode.values())
1117 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1118 +        for (boolean createIncomplete : new boolean[] { true, false })
1119 +        for (Integer v1 : new Integer[] { 1, null })
1120 +    {
1121 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1122 +        final AtomicInteger a = new AtomicInteger(0);
1123 +        if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
1124 +        final CompletableFuture<Integer> g = m.handle
1125 +            (f,
1126 +             (Integer x, Throwable t) -> {
1127 +                m.checkExecutionMode();
1128 +                threadAssertNull(x);
1129 +                threadAssertTrue(t instanceof CancellationException);
1130 +                a.getAndIncrement();
1131 +                return v1;
1132 +            });
1133 +        if (createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
1134 +
1135 +        checkCompletedNormally(g, v1);
1136 +        checkCancelled(f);
1137 +        assertEquals(1, a.get());
1138 +    }}
1139 +
1140 +    /**
1141 +     * handle result completes exceptionally if action does
1142 +     */
1143 +    public void testHandle_sourceFailedActionFailed() {
1144 +        for (ExecutionMode m : ExecutionMode.values())
1145 +        for (boolean createIncomplete : new boolean[] { true, false })
1146 +    {
1147 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1148 +        final AtomicInteger a = new AtomicInteger(0);
1149 +        final CFException ex1 = new CFException();
1150 +        final CFException ex2 = new CFException();
1151 +        if (!createIncomplete) f.completeExceptionally(ex1);
1152 +        final CompletableFuture<Integer> g = m.handle
1153 +            (f,
1154 +             (Integer x, Throwable t) -> {
1155 +                m.checkExecutionMode();
1156 +                threadAssertNull(x);
1157 +                threadAssertSame(ex1, t);
1158 +                a.getAndIncrement();
1159 +                throw ex2;
1160 +            });
1161 +        if (createIncomplete) f.completeExceptionally(ex1);
1162 +
1163 +        checkCompletedWithWrappedException(g, ex2);
1164 +        checkCompletedExceptionally(f, ex1);
1165 +        assertEquals(1, a.get());
1166 +    }}
1167 +
1168 +    public void testHandle_sourceCompletedNormallyActionFailed() {
1169 +        for (ExecutionMode m : ExecutionMode.values())
1170 +        for (boolean createIncomplete : new boolean[] { true, false })
1171 +        for (Integer v1 : new Integer[] { 1, null })
1172 +    {
1173 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1174 +        final AtomicInteger a = new AtomicInteger(0);
1175 +        final CFException ex = new CFException();
1176 +        if (!createIncomplete) assertTrue(f.complete(v1));
1177 +        final CompletableFuture<Integer> g = m.handle
1178 +            (f,
1179 +             (Integer x, Throwable t) -> {
1180 +                m.checkExecutionMode();
1181 +                threadAssertSame(x, v1);
1182 +                threadAssertNull(t);
1183 +                a.getAndIncrement();
1184 +                throw ex;
1185 +            });
1186 +        if (createIncomplete) assertTrue(f.complete(v1));
1187 +
1188 +        checkCompletedWithWrappedException(g, ex);
1189 +        checkCompletedNormally(f, v1);
1190 +        assertEquals(1, a.get());
1191 +    }}
1192 +
1193 +    /**
1194 +     * runAsync completes after running Runnable
1195 +     */
1196 +    public void testRunAsync_normalCompletion() {
1197 +        ExecutionMode[] executionModes = {
1198 +            ExecutionMode.ASYNC,
1199 +            ExecutionMode.EXECUTOR,
1200 +        };
1201 +        for (ExecutionMode m : executionModes)
1202 +    {
1203 +        final Noop r = new Noop(m);
1204 +        final CompletableFuture<Void> f = m.runAsync(r);
1205 +        assertNull(f.join());
1206 +        checkCompletedNormally(f, null);
1207 +        r.assertInvoked();
1208 +    }}
1209 +
1210 +    /**
1211 +     * failing runAsync completes exceptionally after running Runnable
1212 +     */
1213 +    public void testRunAsync_exceptionalCompletion() {
1214 +        ExecutionMode[] executionModes = {
1215 +            ExecutionMode.ASYNC,
1216 +            ExecutionMode.EXECUTOR,
1217 +        };
1218 +        for (ExecutionMode m : executionModes)
1219 +    {
1220 +        final FailingRunnable r = new FailingRunnable(m);
1221 +        final CompletableFuture<Void> f = m.runAsync(r);
1222 +        checkCompletedWithWrappedCFException(f);
1223 +        r.assertInvoked();
1224 +    }}
1225 +
1226 +    /**
1227 +     * supplyAsync completes with result of supplier
1228 +     */
1229 +    public void testSupplyAsync_normalCompletion() {
1230 +        ExecutionMode[] executionModes = {
1231 +            ExecutionMode.ASYNC,
1232 +            ExecutionMode.EXECUTOR,
1233 +        };
1234 +        for (ExecutionMode m : executionModes)
1235 +        for (Integer v1 : new Integer[] { 1, null })
1236 +    {
1237 +        final IntegerSupplier r = new IntegerSupplier(m, v1);
1238 +        final CompletableFuture<Integer> f = m.supplyAsync(r);
1239 +        assertSame(v1, f.join());
1240 +        checkCompletedNormally(f, v1);
1241 +        r.assertInvoked();
1242 +    }}
1243 +
1244 +    /**
1245 +     * Failing supplyAsync completes exceptionally
1246 +     */
1247 +    public void testSupplyAsync_exceptionalCompletion() {
1248 +        ExecutionMode[] executionModes = {
1249 +            ExecutionMode.ASYNC,
1250 +            ExecutionMode.EXECUTOR,
1251 +        };
1252 +        for (ExecutionMode m : executionModes)
1253 +    {
1254 +        FailingSupplier r = new FailingSupplier(m);
1255 +        CompletableFuture<Integer> f = m.supplyAsync(r);
1256 +        checkCompletedWithWrappedCFException(f);
1257 +        r.assertInvoked();
1258 +    }}
1259 +
1260 +    // seq completion methods
1261 +
1262 +    /**
1263 +     * thenRun result completes normally after normal completion of source
1264 +     */
1265 +    public void testThenRun_normalCompletion() {
1266 +        for (ExecutionMode m : ExecutionMode.values())
1267 +        for (Integer v1 : new Integer[] { 1, null })
1268 +    {
1269 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1270 +        final Noop[] rs = new Noop[6];
1271 +        for (int i = 0; i < rs.length; i++) rs[i] = new Noop(m);
1272 +
1273 +        final CompletableFuture<Void> h0 = m.thenRun(f, rs[0]);
1274 +        final CompletableFuture<Void> h1 = m.runAfterBoth(f, f, rs[1]);
1275 +        final CompletableFuture<Void> h2 = m.runAfterEither(f, f, rs[2]);
1276 +        checkIncomplete(h0);
1277 +        checkIncomplete(h1);
1278 +        checkIncomplete(h2);
1279 +        assertTrue(f.complete(v1));
1280 +        final CompletableFuture<Void> h3 = m.thenRun(f, rs[3]);
1281 +        final CompletableFuture<Void> h4 = m.runAfterBoth(f, f, rs[4]);
1282 +        final CompletableFuture<Void> h5 = m.runAfterEither(f, f, rs[5]);
1283 +
1284 +        checkCompletedNormally(h0, null);
1285 +        checkCompletedNormally(h1, null);
1286 +        checkCompletedNormally(h2, null);
1287 +        checkCompletedNormally(h3, null);
1288 +        checkCompletedNormally(h4, null);
1289 +        checkCompletedNormally(h5, null);
1290 +        checkCompletedNormally(f, v1);
1291 +        for (Noop r : rs) r.assertInvoked();
1292 +    }}
1293 +
1294 +    /**
1295 +     * thenRun result completes exceptionally after exceptional
1296 +     * completion of source
1297 +     */
1298 +    public void testThenRun_exceptionalCompletion() {
1299 +        for (ExecutionMode m : ExecutionMode.values())
1300 +    {
1301 +        final CFException ex = new CFException();
1302 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1303 +        final Noop[] rs = new Noop[6];
1304 +        for (int i = 0; i < rs.length; i++) rs[i] = new Noop(m);
1305 +
1306 +        final CompletableFuture<Void> h0 = m.thenRun(f, rs[0]);
1307 +        final CompletableFuture<Void> h1 = m.runAfterBoth(f, f, rs[1]);
1308 +        final CompletableFuture<Void> h2 = m.runAfterEither(f, f, rs[2]);
1309 +        checkIncomplete(h0);
1310 +        checkIncomplete(h1);
1311 +        checkIncomplete(h2);
1312 +        assertTrue(f.completeExceptionally(ex));
1313 +        final CompletableFuture<Void> h3 = m.thenRun(f, rs[3]);
1314 +        final CompletableFuture<Void> h4 = m.runAfterBoth(f, f, rs[4]);
1315 +        final CompletableFuture<Void> h5 = m.runAfterEither(f, f, rs[5]);
1316 +
1317 +        checkCompletedWithWrappedException(h0, ex);
1318 +        checkCompletedWithWrappedException(h1, ex);
1319 +        checkCompletedWithWrappedException(h2, ex);
1320 +        checkCompletedWithWrappedException(h3, ex);
1321 +        checkCompletedWithWrappedException(h4, ex);
1322 +        checkCompletedWithWrappedException(h5, ex);
1323 +        checkCompletedExceptionally(f, ex);
1324 +        for (Noop r : rs) r.assertNotInvoked();
1325 +    }}
1326 +
1327 +    /**
1328 +     * thenRun result completes exceptionally if source cancelled
1329 +     */
1330 +    public void testThenRun_sourceCancelled() {
1331 +        for (ExecutionMode m : ExecutionMode.values())
1332 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1333 +    {
1334 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1335 +        final Noop[] rs = new Noop[6];
1336 +        for (int i = 0; i < rs.length; i++) rs[i] = new Noop(m);
1337 +
1338 +        final CompletableFuture<Void> h0 = m.thenRun(f, rs[0]);
1339 +        final CompletableFuture<Void> h1 = m.runAfterBoth(f, f, rs[1]);
1340 +        final CompletableFuture<Void> h2 = m.runAfterEither(f, f, rs[2]);
1341 +        checkIncomplete(h0);
1342 +        checkIncomplete(h1);
1343 +        checkIncomplete(h2);
1344 +        assertTrue(f.cancel(mayInterruptIfRunning));
1345 +        final CompletableFuture<Void> h3 = m.thenRun(f, rs[3]);
1346 +        final CompletableFuture<Void> h4 = m.runAfterBoth(f, f, rs[4]);
1347 +        final CompletableFuture<Void> h5 = m.runAfterEither(f, f, rs[5]);
1348 +
1349 +        checkCompletedWithWrappedCancellationException(h0);
1350 +        checkCompletedWithWrappedCancellationException(h1);
1351 +        checkCompletedWithWrappedCancellationException(h2);
1352 +        checkCompletedWithWrappedCancellationException(h3);
1353 +        checkCompletedWithWrappedCancellationException(h4);
1354 +        checkCompletedWithWrappedCancellationException(h5);
1355 +        checkCancelled(f);
1356 +        for (Noop r : rs) r.assertNotInvoked();
1357 +    }}
1358 +
1359 +    /**
1360 +     * thenRun result completes exceptionally if action does
1361 +     */
1362 +    public void testThenRun_actionFailed() {
1363 +        for (ExecutionMode m : ExecutionMode.values())
1364 +        for (Integer v1 : new Integer[] { 1, null })
1365 +    {
1366 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1367 +        final FailingRunnable[] rs = new FailingRunnable[6];
1368 +        for (int i = 0; i < rs.length; i++) rs[i] = new FailingRunnable(m);
1369 +
1370 +        final CompletableFuture<Void> h0 = m.thenRun(f, rs[0]);
1371 +        final CompletableFuture<Void> h1 = m.runAfterBoth(f, f, rs[1]);
1372 +        final CompletableFuture<Void> h2 = m.runAfterEither(f, f, rs[2]);
1373 +        assertTrue(f.complete(v1));
1374 +        final CompletableFuture<Void> h3 = m.thenRun(f, rs[3]);
1375 +        final CompletableFuture<Void> h4 = m.runAfterBoth(f, f, rs[4]);
1376 +        final CompletableFuture<Void> h5 = m.runAfterEither(f, f, rs[5]);
1377 +
1378 +        checkCompletedWithWrappedCFException(h0);
1379 +        checkCompletedWithWrappedCFException(h1);
1380 +        checkCompletedWithWrappedCFException(h2);
1381 +        checkCompletedWithWrappedCFException(h3);
1382 +        checkCompletedWithWrappedCFException(h4);
1383 +        checkCompletedWithWrappedCFException(h5);
1384 +        checkCompletedNormally(f, v1);
1385 +    }}
1386 +
1387 +    /**
1388 +     * thenApply result completes normally after normal completion of source
1389 +     */
1390 +    public void testThenApply_normalCompletion() {
1391 +        for (ExecutionMode m : ExecutionMode.values())
1392 +        for (Integer v1 : new Integer[] { 1, null })
1393 +    {
1394 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1395 +        final IncFunction[] rs = new IncFunction[4];
1396 +        for (int i = 0; i < rs.length; i++) rs[i] = new IncFunction(m);
1397 +
1398 +        final CompletableFuture<Integer> h0 = m.thenApply(f, rs[0]);
1399 +        final CompletableFuture<Integer> h1 = m.applyToEither(f, f, rs[1]);
1400 +        checkIncomplete(h0);
1401 +        checkIncomplete(h1);
1402 +        assertTrue(f.complete(v1));
1403 +        final CompletableFuture<Integer> h2 = m.thenApply(f, rs[2]);
1404 +        final CompletableFuture<Integer> h3 = m.applyToEither(f, f, rs[3]);
1405 +
1406 +        checkCompletedNormally(h0, inc(v1));
1407 +        checkCompletedNormally(h1, inc(v1));
1408 +        checkCompletedNormally(h2, inc(v1));
1409 +        checkCompletedNormally(h3, inc(v1));
1410 +        checkCompletedNormally(f, v1);
1411 +        for (IncFunction r : rs) r.assertValue(inc(v1));
1412 +    }}
1413 +
1414 +    /**
1415 +     * thenApply result completes exceptionally after exceptional
1416 +     * completion of source
1417 +     */
1418 +    public void testThenApply_exceptionalCompletion() {
1419 +        for (ExecutionMode m : ExecutionMode.values())
1420 +    {
1421 +        final CFException ex = new CFException();
1422 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1423 +        final IncFunction[] rs = new IncFunction[4];
1424 +        for (int i = 0; i < rs.length; i++) rs[i] = new IncFunction(m);
1425 +
1426 +        final CompletableFuture<Integer> h0 = m.thenApply(f, rs[0]);
1427 +        final CompletableFuture<Integer> h1 = m.applyToEither(f, f, rs[1]);
1428 +        assertTrue(f.completeExceptionally(ex));
1429 +        final CompletableFuture<Integer> h2 = m.thenApply(f, rs[2]);
1430 +        final CompletableFuture<Integer> h3 = m.applyToEither(f, f, rs[3]);
1431 +
1432 +        checkCompletedWithWrappedException(h0, ex);
1433 +        checkCompletedWithWrappedException(h1, ex);
1434 +        checkCompletedWithWrappedException(h2, ex);
1435 +        checkCompletedWithWrappedException(h3, ex);
1436 +        checkCompletedExceptionally(f, ex);
1437 +        for (IncFunction r : rs) r.assertNotInvoked();
1438 +    }}
1439 +
1440 +    /**
1441 +     * thenApply result completes exceptionally if source cancelled
1442 +     */
1443 +    public void testThenApply_sourceCancelled() {
1444 +        for (ExecutionMode m : ExecutionMode.values())
1445 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1446 +    {
1447 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1448 +        final IncFunction[] rs = new IncFunction[4];
1449 +        for (int i = 0; i < rs.length; i++) rs[i] = new IncFunction(m);
1450 +
1451 +        final CompletableFuture<Integer> h0 = m.thenApply(f, rs[0]);
1452 +        final CompletableFuture<Integer> h1 = m.applyToEither(f, f, rs[1]);
1453 +        assertTrue(f.cancel(mayInterruptIfRunning));
1454 +        final CompletableFuture<Integer> h2 = m.thenApply(f, rs[2]);
1455 +        final CompletableFuture<Integer> h3 = m.applyToEither(f, f, rs[3]);
1456 +
1457 +        checkCompletedWithWrappedCancellationException(h0);
1458 +        checkCompletedWithWrappedCancellationException(h1);
1459 +        checkCompletedWithWrappedCancellationException(h2);
1460 +        checkCompletedWithWrappedCancellationException(h3);
1461 +        checkCancelled(f);
1462 +        for (IncFunction r : rs) r.assertNotInvoked();
1463 +    }}
1464 +
1465 +    /**
1466 +     * thenApply result completes exceptionally if action does
1467 +     */
1468 +    public void testThenApply_actionFailed() {
1469 +        for (ExecutionMode m : ExecutionMode.values())
1470 +        for (Integer v1 : new Integer[] { 1, null })
1471 +    {
1472 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1473 +        final FailingFunction[] rs = new FailingFunction[4];
1474 +        for (int i = 0; i < rs.length; i++) rs[i] = new FailingFunction(m);
1475 +
1476 +        final CompletableFuture<Integer> h0 = m.thenApply(f, rs[0]);
1477 +        final CompletableFuture<Integer> h1 = m.applyToEither(f, f, rs[1]);
1478 +        assertTrue(f.complete(v1));
1479 +        final CompletableFuture<Integer> h2 = m.thenApply(f, rs[2]);
1480 +        final CompletableFuture<Integer> h3 = m.applyToEither(f, f, rs[3]);
1481 +
1482 +        checkCompletedWithWrappedCFException(h0);
1483 +        checkCompletedWithWrappedCFException(h1);
1484 +        checkCompletedWithWrappedCFException(h2);
1485 +        checkCompletedWithWrappedCFException(h3);
1486 +        checkCompletedNormally(f, v1);
1487 +    }}
1488 +
1489 +    /**
1490 +     * thenAccept result completes normally after normal completion of source
1491 +     */
1492 +    public void testThenAccept_normalCompletion() {
1493 +        for (ExecutionMode m : ExecutionMode.values())
1494 +        for (Integer v1 : new Integer[] { 1, null })
1495 +    {
1496 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1497 +        final NoopConsumer[] rs = new NoopConsumer[4];
1498 +        for (int i = 0; i < rs.length; i++) rs[i] = new NoopConsumer(m);
1499 +
1500 +        final CompletableFuture<Void> h0 = m.thenAccept(f, rs[0]);
1501 +        final CompletableFuture<Void> h1 = m.acceptEither(f, f, rs[1]);
1502 +        checkIncomplete(h0);
1503 +        checkIncomplete(h1);
1504 +        assertTrue(f.complete(v1));
1505 +        final CompletableFuture<Void> h2 = m.thenAccept(f, rs[2]);
1506 +        final CompletableFuture<Void> h3 = m.acceptEither(f, f, rs[3]);
1507 +
1508 +        checkCompletedNormally(h0, null);
1509 +        checkCompletedNormally(h1, null);
1510 +        checkCompletedNormally(h2, null);
1511 +        checkCompletedNormally(h3, null);
1512 +        checkCompletedNormally(f, v1);
1513 +        for (NoopConsumer r : rs) r.assertValue(v1);
1514 +    }}
1515 +
1516 +    /**
1517 +     * thenAccept result completes exceptionally after exceptional
1518 +     * completion of source
1519 +     */
1520 +    public void testThenAccept_exceptionalCompletion() {
1521 +        for (ExecutionMode m : ExecutionMode.values())
1522 +    {
1523 +        final CFException ex = new CFException();
1524 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1525 +        final NoopConsumer[] rs = new NoopConsumer[4];
1526 +        for (int i = 0; i < rs.length; i++) rs[i] = new NoopConsumer(m);
1527 +
1528 +        final CompletableFuture<Void> h0 = m.thenAccept(f, rs[0]);
1529 +        final CompletableFuture<Void> h1 = m.acceptEither(f, f, rs[1]);
1530 +        assertTrue(f.completeExceptionally(ex));
1531 +        final CompletableFuture<Void> h2 = m.thenAccept(f, rs[2]);
1532 +        final CompletableFuture<Void> h3 = m.acceptEither(f, f, rs[3]);
1533 +
1534 +        checkCompletedWithWrappedException(h0, ex);
1535 +        checkCompletedWithWrappedException(h1, ex);
1536 +        checkCompletedWithWrappedException(h2, ex);
1537 +        checkCompletedWithWrappedException(h3, ex);
1538 +        checkCompletedExceptionally(f, ex);
1539 +        for (NoopConsumer r : rs) r.assertNotInvoked();
1540 +    }}
1541 +
1542 +    /**
1543 +     * thenAccept result completes exceptionally if source cancelled
1544 +     */
1545 +    public void testThenAccept_sourceCancelled() {
1546 +        for (ExecutionMode m : ExecutionMode.values())
1547 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1548 +    {
1549 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1550 +        final NoopConsumer[] rs = new NoopConsumer[4];
1551 +        for (int i = 0; i < rs.length; i++) rs[i] = new NoopConsumer(m);
1552 +
1553 +        final CompletableFuture<Void> h0 = m.thenAccept(f, rs[0]);
1554 +        final CompletableFuture<Void> h1 = m.acceptEither(f, f, rs[1]);
1555 +        assertTrue(f.cancel(mayInterruptIfRunning));
1556 +        final CompletableFuture<Void> h2 = m.thenAccept(f, rs[2]);
1557 +        final CompletableFuture<Void> h3 = m.acceptEither(f, f, rs[3]);
1558 +
1559 +        checkCompletedWithWrappedCancellationException(h0);
1560 +        checkCompletedWithWrappedCancellationException(h1);
1561 +        checkCompletedWithWrappedCancellationException(h2);
1562 +        checkCompletedWithWrappedCancellationException(h3);
1563 +        checkCancelled(f);
1564 +        for (NoopConsumer r : rs) r.assertNotInvoked();
1565 +    }}
1566 +
1567 +    /**
1568 +     * thenAccept result completes exceptionally if action does
1569 +     */
1570 +    public void testThenAccept_actionFailed() {
1571 +        for (ExecutionMode m : ExecutionMode.values())
1572 +        for (Integer v1 : new Integer[] { 1, null })
1573 +    {
1574 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1575 +        final FailingConsumer[] rs = new FailingConsumer[4];
1576 +        for (int i = 0; i < rs.length; i++) rs[i] = new FailingConsumer(m);
1577 +
1578 +        final CompletableFuture<Void> h0 = m.thenAccept(f, rs[0]);
1579 +        final CompletableFuture<Void> h1 = m.acceptEither(f, f, rs[1]);
1580 +        assertTrue(f.complete(v1));
1581 +        final CompletableFuture<Void> h2 = m.thenAccept(f, rs[2]);
1582 +        final CompletableFuture<Void> h3 = m.acceptEither(f, f, rs[3]);
1583 +
1584 +        checkCompletedWithWrappedCFException(h0);
1585 +        checkCompletedWithWrappedCFException(h1);
1586 +        checkCompletedWithWrappedCFException(h2);
1587 +        checkCompletedWithWrappedCFException(h3);
1588 +        checkCompletedNormally(f, v1);
1589 +    }}
1590 +
1591 +    /**
1592 +     * thenCombine result completes normally after normal completion
1593 +     * of sources
1594 +     */
1595 +    public void testThenCombine_normalCompletion() {
1596 +        for (ExecutionMode m : ExecutionMode.values())
1597 +        for (boolean fFirst : new boolean[] { true, false })
1598 +        for (Integer v1 : new Integer[] { 1, null })
1599 +        for (Integer v2 : new Integer[] { 2, null })
1600 +    {
1601 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1602 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1603 +        final SubtractFunction[] rs = new SubtractFunction[6];
1604 +        for (int i = 0; i < rs.length; i++) rs[i] = new SubtractFunction(m);
1605 +
1606 +        final CompletableFuture<Integer> fst =  fFirst ? f : g;
1607 +        final CompletableFuture<Integer> snd = !fFirst ? f : g;
1608 +        final Integer w1 =  fFirst ? v1 : v2;
1609 +        final Integer w2 = !fFirst ? v1 : v2;
1610 +
1611 +        final CompletableFuture<Integer> h0 = m.thenCombine(f, g, rs[0]);
1612 +        final CompletableFuture<Integer> h1 = m.thenCombine(fst, fst, rs[1]);
1613 +        assertTrue(fst.complete(w1));
1614 +        final CompletableFuture<Integer> h2 = m.thenCombine(f, g, rs[2]);
1615 +        final CompletableFuture<Integer> h3 = m.thenCombine(fst, fst, rs[3]);
1616 +        checkIncomplete(h0); rs[0].assertNotInvoked();
1617 +        checkIncomplete(h2); rs[2].assertNotInvoked();
1618 +        checkCompletedNormally(h1, subtract(w1, w1));
1619 +        checkCompletedNormally(h3, subtract(w1, w1));
1620 +        rs[1].assertValue(subtract(w1, w1));
1621 +        rs[3].assertValue(subtract(w1, w1));
1622 +        assertTrue(snd.complete(w2));
1623 +        final CompletableFuture<Integer> h4 = m.thenCombine(f, g, rs[4]);
1624 +
1625 +        checkCompletedNormally(h0, subtract(v1, v2));
1626 +        checkCompletedNormally(h2, subtract(v1, v2));
1627 +        checkCompletedNormally(h4, subtract(v1, v2));
1628 +        rs[0].assertValue(subtract(v1, v2));
1629 +        rs[2].assertValue(subtract(v1, v2));
1630 +        rs[4].assertValue(subtract(v1, v2));
1631 +
1632 +        checkCompletedNormally(f, v1);
1633 +        checkCompletedNormally(g, v2);
1634 +    }}
1635 +
1636 +    /**
1637 +     * thenCombine result completes exceptionally after exceptional
1638 +     * completion of either source
1639 +     */
1640 +    public void testThenCombine_exceptionalCompletion() throws Throwable {
1641 +        for (ExecutionMode m : ExecutionMode.values())
1642 +        for (boolean fFirst : new boolean[] { true, false })
1643 +        for (boolean failFirst : new boolean[] { true, false })
1644 +        for (Integer v1 : new Integer[] { 1, null })
1645 +    {
1646 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1647 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1648 +        final CFException ex = new CFException();
1649 +        final SubtractFunction r1 = new SubtractFunction(m);
1650 +        final SubtractFunction r2 = new SubtractFunction(m);
1651 +        final SubtractFunction r3 = new SubtractFunction(m);
1652 +
1653 +        final CompletableFuture<Integer> fst =  fFirst ? f : g;
1654 +        final CompletableFuture<Integer> snd = !fFirst ? f : g;
1655 +        final Callable<Boolean> complete1 = failFirst ?
1656 +            () -> fst.completeExceptionally(ex) :
1657 +            () -> fst.complete(v1);
1658 +        final Callable<Boolean> complete2 = failFirst ?
1659 +            () -> snd.complete(v1) :
1660 +            () -> snd.completeExceptionally(ex);
1661 +
1662 +        final CompletableFuture<Integer> h1 = m.thenCombine(f, g, r1);
1663 +        assertTrue(complete1.call());
1664 +        final CompletableFuture<Integer> h2 = m.thenCombine(f, g, r2);
1665 +        checkIncomplete(h1);
1666 +        checkIncomplete(h2);
1667 +        assertTrue(complete2.call());
1668 +        final CompletableFuture<Integer> h3 = m.thenCombine(f, g, r3);
1669 +
1670 +        checkCompletedWithWrappedException(h1, ex);
1671 +        checkCompletedWithWrappedException(h2, ex);
1672 +        checkCompletedWithWrappedException(h3, ex);
1673 +        r1.assertNotInvoked();
1674 +        r2.assertNotInvoked();
1675 +        r3.assertNotInvoked();
1676 +        checkCompletedNormally(failFirst ? snd : fst, v1);
1677 +        checkCompletedExceptionally(failFirst ? fst : snd, ex);
1678 +    }}
1679 +
1680 +    /**
1681 +     * thenCombine result completes exceptionally if either source cancelled
1682 +     */
1683 +    public void testThenCombine_sourceCancelled() throws Throwable {
1684 +        for (ExecutionMode m : ExecutionMode.values())
1685 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1686 +        for (boolean fFirst : new boolean[] { true, false })
1687 +        for (boolean failFirst : new boolean[] { true, false })
1688 +        for (Integer v1 : new Integer[] { 1, null })
1689 +    {
1690 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1691 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1692 +        final SubtractFunction r1 = new SubtractFunction(m);
1693 +        final SubtractFunction r2 = new SubtractFunction(m);
1694 +        final SubtractFunction r3 = new SubtractFunction(m);
1695 +
1696 +        final CompletableFuture<Integer> fst =  fFirst ? f : g;
1697 +        final CompletableFuture<Integer> snd = !fFirst ? f : g;
1698 +        final Callable<Boolean> complete1 = failFirst ?
1699 +            () -> fst.cancel(mayInterruptIfRunning) :
1700 +            () -> fst.complete(v1);
1701 +        final Callable<Boolean> complete2 = failFirst ?
1702 +            () -> snd.complete(v1) :
1703 +            () -> snd.cancel(mayInterruptIfRunning);
1704 +
1705 +        final CompletableFuture<Integer> h1 = m.thenCombine(f, g, r1);
1706 +        assertTrue(complete1.call());
1707 +        final CompletableFuture<Integer> h2 = m.thenCombine(f, g, r2);
1708 +        checkIncomplete(h1);
1709 +        checkIncomplete(h2);
1710 +        assertTrue(complete2.call());
1711 +        final CompletableFuture<Integer> h3 = m.thenCombine(f, g, r3);
1712 +
1713 +        checkCompletedWithWrappedCancellationException(h1);
1714 +        checkCompletedWithWrappedCancellationException(h2);
1715 +        checkCompletedWithWrappedCancellationException(h3);
1716 +        r1.assertNotInvoked();
1717 +        r2.assertNotInvoked();
1718 +        r3.assertNotInvoked();
1719 +        checkCompletedNormally(failFirst ? snd : fst, v1);
1720 +        checkCancelled(failFirst ? fst : snd);
1721 +    }}
1722 +
1723 +    /**
1724 +     * thenCombine result completes exceptionally if action does
1725 +     */
1726 +    public void testThenCombine_actionFailed() {
1727 +        for (ExecutionMode m : ExecutionMode.values())
1728 +        for (boolean fFirst : new boolean[] { true, false })
1729 +        for (Integer v1 : new Integer[] { 1, null })
1730 +        for (Integer v2 : new Integer[] { 2, null })
1731 +    {
1732 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1733 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1734 +        final FailingBiFunction r1 = new FailingBiFunction(m);
1735 +        final FailingBiFunction r2 = new FailingBiFunction(m);
1736 +        final FailingBiFunction r3 = new FailingBiFunction(m);
1737 +
1738 +        final CompletableFuture<Integer> fst =  fFirst ? f : g;
1739 +        final CompletableFuture<Integer> snd = !fFirst ? f : g;
1740 +        final Integer w1 =  fFirst ? v1 : v2;
1741 +        final Integer w2 = !fFirst ? v1 : v2;
1742 +
1743 +        final CompletableFuture<Integer> h1 = m.thenCombine(f, g, r1);
1744 +        assertTrue(fst.complete(w1));
1745 +        final CompletableFuture<Integer> h2 = m.thenCombine(f, g, r2);
1746 +        assertTrue(snd.complete(w2));
1747 +        final CompletableFuture<Integer> h3 = m.thenCombine(f, g, r3);
1748 +
1749 +        checkCompletedWithWrappedCFException(h1);
1750 +        checkCompletedWithWrappedCFException(h2);
1751 +        checkCompletedWithWrappedCFException(h3);
1752 +        r1.assertInvoked();
1753 +        r2.assertInvoked();
1754 +        r3.assertInvoked();
1755 +        checkCompletedNormally(f, v1);
1756 +        checkCompletedNormally(g, v2);
1757 +    }}
1758 +
1759 +    /**
1760 +     * thenAcceptBoth result completes normally after normal
1761 +     * completion of sources
1762 +     */
1763 +    public void testThenAcceptBoth_normalCompletion() {
1764 +        for (ExecutionMode m : ExecutionMode.values())
1765 +        for (boolean fFirst : new boolean[] { true, false })
1766 +        for (Integer v1 : new Integer[] { 1, null })
1767 +        for (Integer v2 : new Integer[] { 2, null })
1768 +    {
1769 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1770 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1771 +        final SubtractAction r1 = new SubtractAction(m);
1772 +        final SubtractAction r2 = new SubtractAction(m);
1773 +        final SubtractAction r3 = new SubtractAction(m);
1774 +
1775 +        final CompletableFuture<Integer> fst =  fFirst ? f : g;
1776 +        final CompletableFuture<Integer> snd = !fFirst ? f : g;
1777 +        final Integer w1 =  fFirst ? v1 : v2;
1778 +        final Integer w2 = !fFirst ? v1 : v2;
1779 +
1780 +        final CompletableFuture<Void> h1 = m.thenAcceptBoth(f, g, r1);
1781 +        assertTrue(fst.complete(w1));
1782 +        final CompletableFuture<Void> h2 = m.thenAcceptBoth(f, g, r2);
1783 +        checkIncomplete(h1);
1784 +        checkIncomplete(h2);
1785 +        r1.assertNotInvoked();
1786 +        r2.assertNotInvoked();
1787 +        assertTrue(snd.complete(w2));
1788 +        final CompletableFuture<Void> h3 = m.thenAcceptBoth(f, g, r3);
1789 +
1790 +        checkCompletedNormally(h1, null);
1791 +        checkCompletedNormally(h2, null);
1792 +        checkCompletedNormally(h3, null);
1793 +        r1.assertValue(subtract(v1, v2));
1794 +        r2.assertValue(subtract(v1, v2));
1795 +        r3.assertValue(subtract(v1, v2));
1796 +        checkCompletedNormally(f, v1);
1797 +        checkCompletedNormally(g, v2);
1798 +    }}
1799 +
1800 +    /**
1801 +     * thenAcceptBoth result completes exceptionally after exceptional
1802 +     * completion of either source
1803 +     */
1804 +    public void testThenAcceptBoth_exceptionalCompletion() throws Throwable {
1805 +        for (ExecutionMode m : ExecutionMode.values())
1806 +        for (boolean fFirst : new boolean[] { true, false })
1807 +        for (boolean failFirst : new boolean[] { true, false })
1808 +        for (Integer v1 : new Integer[] { 1, null })
1809 +    {
1810 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1811 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1812 +        final CFException ex = new CFException();
1813 +        final SubtractAction r1 = new SubtractAction(m);
1814 +        final SubtractAction r2 = new SubtractAction(m);
1815 +        final SubtractAction r3 = new SubtractAction(m);
1816 +
1817 +        final CompletableFuture<Integer> fst =  fFirst ? f : g;
1818 +        final CompletableFuture<Integer> snd = !fFirst ? f : g;
1819 +        final Callable<Boolean> complete1 = failFirst ?
1820 +            () -> fst.completeExceptionally(ex) :
1821 +            () -> fst.complete(v1);
1822 +        final Callable<Boolean> complete2 = failFirst ?
1823 +            () -> snd.complete(v1) :
1824 +            () -> snd.completeExceptionally(ex);
1825 +
1826 +        final CompletableFuture<Void> h1 = m.thenAcceptBoth(f, g, r1);
1827 +        assertTrue(complete1.call());
1828 +        final CompletableFuture<Void> h2 = m.thenAcceptBoth(f, g, r2);
1829 +        checkIncomplete(h1);
1830 +        checkIncomplete(h2);
1831 +        assertTrue(complete2.call());
1832 +        final CompletableFuture<Void> h3 = m.thenAcceptBoth(f, g, r3);
1833 +
1834 +        checkCompletedWithWrappedException(h1, ex);
1835 +        checkCompletedWithWrappedException(h2, ex);
1836 +        checkCompletedWithWrappedException(h3, ex);
1837 +        r1.assertNotInvoked();
1838 +        r2.assertNotInvoked();
1839 +        r3.assertNotInvoked();
1840 +        checkCompletedNormally(failFirst ? snd : fst, v1);
1841 +        checkCompletedExceptionally(failFirst ? fst : snd, ex);
1842 +    }}
1843 +
1844 +    /**
1845 +     * thenAcceptBoth result completes exceptionally if either source cancelled
1846 +     */
1847 +    public void testThenAcceptBoth_sourceCancelled() throws Throwable {
1848 +        for (ExecutionMode m : ExecutionMode.values())
1849 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1850 +        for (boolean fFirst : new boolean[] { true, false })
1851 +        for (boolean failFirst : new boolean[] { true, false })
1852 +        for (Integer v1 : new Integer[] { 1, null })
1853 +    {
1854 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1855 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1856 +        final SubtractAction r1 = new SubtractAction(m);
1857 +        final SubtractAction r2 = new SubtractAction(m);
1858 +        final SubtractAction r3 = new SubtractAction(m);
1859 +
1860 +        final CompletableFuture<Integer> fst =  fFirst ? f : g;
1861 +        final CompletableFuture<Integer> snd = !fFirst ? f : g;
1862 +        final Callable<Boolean> complete1 = failFirst ?
1863 +            () -> fst.cancel(mayInterruptIfRunning) :
1864 +            () -> fst.complete(v1);
1865 +        final Callable<Boolean> complete2 = failFirst ?
1866 +            () -> snd.complete(v1) :
1867 +            () -> snd.cancel(mayInterruptIfRunning);
1868 +
1869 +        final CompletableFuture<Void> h1 = m.thenAcceptBoth(f, g, r1);
1870 +        assertTrue(complete1.call());
1871 +        final CompletableFuture<Void> h2 = m.thenAcceptBoth(f, g, r2);
1872 +        checkIncomplete(h1);
1873 +        checkIncomplete(h2);
1874 +        assertTrue(complete2.call());
1875 +        final CompletableFuture<Void> h3 = m.thenAcceptBoth(f, g, r3);
1876 +
1877 +        checkCompletedWithWrappedCancellationException(h1);
1878 +        checkCompletedWithWrappedCancellationException(h2);
1879 +        checkCompletedWithWrappedCancellationException(h3);
1880 +        r1.assertNotInvoked();
1881 +        r2.assertNotInvoked();
1882 +        r3.assertNotInvoked();
1883 +        checkCompletedNormally(failFirst ? snd : fst, v1);
1884 +        checkCancelled(failFirst ? fst : snd);
1885 +    }}
1886 +
1887 +    /**
1888 +     * thenAcceptBoth result completes exceptionally if action does
1889 +     */
1890 +    public void testThenAcceptBoth_actionFailed() {
1891 +        for (ExecutionMode m : ExecutionMode.values())
1892 +        for (boolean fFirst : new boolean[] { true, false })
1893 +        for (Integer v1 : new Integer[] { 1, null })
1894 +        for (Integer v2 : new Integer[] { 2, null })
1895 +    {
1896 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1897 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1898 +        final FailingBiConsumer r1 = new FailingBiConsumer(m);
1899 +        final FailingBiConsumer r2 = new FailingBiConsumer(m);
1900 +        final FailingBiConsumer r3 = new FailingBiConsumer(m);
1901 +
1902 +        final CompletableFuture<Integer> fst =  fFirst ? f : g;
1903 +        final CompletableFuture<Integer> snd = !fFirst ? f : g;
1904 +        final Integer w1 =  fFirst ? v1 : v2;
1905 +        final Integer w2 = !fFirst ? v1 : v2;
1906 +
1907 +        final CompletableFuture<Void> h1 = m.thenAcceptBoth(f, g, r1);
1908 +        assertTrue(fst.complete(w1));
1909 +        final CompletableFuture<Void> h2 = m.thenAcceptBoth(f, g, r2);
1910 +        assertTrue(snd.complete(w2));
1911 +        final CompletableFuture<Void> h3 = m.thenAcceptBoth(f, g, r3);
1912 +
1913 +        checkCompletedWithWrappedCFException(h1);
1914 +        checkCompletedWithWrappedCFException(h2);
1915 +        checkCompletedWithWrappedCFException(h3);
1916 +        r1.assertInvoked();
1917 +        r2.assertInvoked();
1918 +        r3.assertInvoked();
1919 +        checkCompletedNormally(f, v1);
1920 +        checkCompletedNormally(g, v2);
1921 +    }}
1922 +
1923 +    /**
1924 +     * runAfterBoth result completes normally after normal
1925 +     * completion of sources
1926 +     */
1927 +    public void testRunAfterBoth_normalCompletion() {
1928 +        for (ExecutionMode m : ExecutionMode.values())
1929 +        for (boolean fFirst : new boolean[] { true, false })
1930 +        for (Integer v1 : new Integer[] { 1, null })
1931 +        for (Integer v2 : new Integer[] { 2, null })
1932 +    {
1933 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1934 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1935 +        final Noop r1 = new Noop(m);
1936 +        final Noop r2 = new Noop(m);
1937 +        final Noop r3 = new Noop(m);
1938 +
1939 +        final CompletableFuture<Integer> fst =  fFirst ? f : g;
1940 +        final CompletableFuture<Integer> snd = !fFirst ? f : g;
1941 +        final Integer w1 =  fFirst ? v1 : v2;
1942 +        final Integer w2 = !fFirst ? v1 : v2;
1943 +
1944 +        final CompletableFuture<Void> h1 = m.runAfterBoth(f, g, r1);
1945 +        assertTrue(fst.complete(w1));
1946 +        final CompletableFuture<Void> h2 = m.runAfterBoth(f, g, r2);
1947 +        checkIncomplete(h1);
1948 +        checkIncomplete(h2);
1949 +        r1.assertNotInvoked();
1950 +        r2.assertNotInvoked();
1951 +        assertTrue(snd.complete(w2));
1952 +        final CompletableFuture<Void> h3 = m.runAfterBoth(f, g, r3);
1953 +
1954 +        checkCompletedNormally(h1, null);
1955 +        checkCompletedNormally(h2, null);
1956 +        checkCompletedNormally(h3, null);
1957 +        r1.assertInvoked();
1958 +        r2.assertInvoked();
1959 +        r3.assertInvoked();
1960 +        checkCompletedNormally(f, v1);
1961 +        checkCompletedNormally(g, v2);
1962 +    }}
1963 +
1964 +    /**
1965 +     * runAfterBoth result completes exceptionally after exceptional
1966 +     * completion of either source
1967 +     */
1968 +    public void testRunAfterBoth_exceptionalCompletion() throws Throwable {
1969 +        for (ExecutionMode m : ExecutionMode.values())
1970 +        for (boolean fFirst : new boolean[] { true, false })
1971 +        for (boolean failFirst : new boolean[] { true, false })
1972 +        for (Integer v1 : new Integer[] { 1, null })
1973 +    {
1974 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1975 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1976 +        final CFException ex = new CFException();
1977 +        final Noop r1 = new Noop(m);
1978 +        final Noop r2 = new Noop(m);
1979 +        final Noop r3 = new Noop(m);
1980 +
1981 +        final CompletableFuture<Integer> fst =  fFirst ? f : g;
1982 +        final CompletableFuture<Integer> snd = !fFirst ? f : g;
1983 +        final Callable<Boolean> complete1 = failFirst ?
1984 +            () -> fst.completeExceptionally(ex) :
1985 +            () -> fst.complete(v1);
1986 +        final Callable<Boolean> complete2 = failFirst ?
1987 +            () -> snd.complete(v1) :
1988 +            () -> snd.completeExceptionally(ex);
1989 +
1990 +        final CompletableFuture<Void> h1 = m.runAfterBoth(f, g, r1);
1991 +        assertTrue(complete1.call());
1992 +        final CompletableFuture<Void> h2 = m.runAfterBoth(f, g, r2);
1993 +        checkIncomplete(h1);
1994 +        checkIncomplete(h2);
1995 +        assertTrue(complete2.call());
1996 +        final CompletableFuture<Void> h3 = m.runAfterBoth(f, g, r3);
1997 +
1998 +        checkCompletedWithWrappedException(h1, ex);
1999 +        checkCompletedWithWrappedException(h2, ex);
2000 +        checkCompletedWithWrappedException(h3, ex);
2001 +        r1.assertNotInvoked();
2002 +        r2.assertNotInvoked();
2003 +        r3.assertNotInvoked();
2004 +        checkCompletedNormally(failFirst ? snd : fst, v1);
2005 +        checkCompletedExceptionally(failFirst ? fst : snd, ex);
2006 +    }}
2007 +
2008 +    /**
2009 +     * runAfterBoth result completes exceptionally if either source cancelled
2010 +     */
2011 +    public void testRunAfterBoth_sourceCancelled() throws Throwable {
2012 +        for (ExecutionMode m : ExecutionMode.values())
2013 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2014 +        for (boolean fFirst : new boolean[] { true, false })
2015 +        for (boolean failFirst : new boolean[] { true, false })
2016 +        for (Integer v1 : new Integer[] { 1, null })
2017 +    {
2018 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2019 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2020 +        final Noop r1 = new Noop(m);
2021 +        final Noop r2 = new Noop(m);
2022 +        final Noop r3 = new Noop(m);
2023 +
2024 +        final CompletableFuture<Integer> fst =  fFirst ? f : g;
2025 +        final CompletableFuture<Integer> snd = !fFirst ? f : g;
2026 +        final Callable<Boolean> complete1 = failFirst ?
2027 +            () -> fst.cancel(mayInterruptIfRunning) :
2028 +            () -> fst.complete(v1);
2029 +        final Callable<Boolean> complete2 = failFirst ?
2030 +            () -> snd.complete(v1) :
2031 +            () -> snd.cancel(mayInterruptIfRunning);
2032 +
2033 +        final CompletableFuture<Void> h1 = m.runAfterBoth(f, g, r1);
2034 +        assertTrue(complete1.call());
2035 +        final CompletableFuture<Void> h2 = m.runAfterBoth(f, g, r2);
2036 +        checkIncomplete(h1);
2037 +        checkIncomplete(h2);
2038 +        assertTrue(complete2.call());
2039 +        final CompletableFuture<Void> h3 = m.runAfterBoth(f, g, r3);
2040 +
2041 +        checkCompletedWithWrappedCancellationException(h1);
2042 +        checkCompletedWithWrappedCancellationException(h2);
2043 +        checkCompletedWithWrappedCancellationException(h3);
2044 +        r1.assertNotInvoked();
2045 +        r2.assertNotInvoked();
2046 +        r3.assertNotInvoked();
2047 +        checkCompletedNormally(failFirst ? snd : fst, v1);
2048 +        checkCancelled(failFirst ? fst : snd);
2049 +    }}
2050 +
2051 +    /**
2052 +     * runAfterBoth result completes exceptionally if action does
2053 +     */
2054 +    public void testRunAfterBoth_actionFailed() {
2055 +        for (ExecutionMode m : ExecutionMode.values())
2056 +        for (boolean fFirst : new boolean[] { true, false })
2057 +        for (Integer v1 : new Integer[] { 1, null })
2058 +        for (Integer v2 : new Integer[] { 2, null })
2059 +    {
2060 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2061 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2062 +        final FailingRunnable r1 = new FailingRunnable(m);
2063 +        final FailingRunnable r2 = new FailingRunnable(m);
2064 +        final FailingRunnable r3 = new FailingRunnable(m);
2065 +
2066 +        final CompletableFuture<Integer> fst =  fFirst ? f : g;
2067 +        final CompletableFuture<Integer> snd = !fFirst ? f : g;
2068 +        final Integer w1 =  fFirst ? v1 : v2;
2069 +        final Integer w2 = !fFirst ? v1 : v2;
2070 +
2071 +        final CompletableFuture<Void> h1 = m.runAfterBoth(f, g, r1);
2072 +        assertTrue(fst.complete(w1));
2073 +        final CompletableFuture<Void> h2 = m.runAfterBoth(f, g, r2);
2074 +        assertTrue(snd.complete(w2));
2075 +        final CompletableFuture<Void> h3 = m.runAfterBoth(f, g, r3);
2076 +
2077 +        checkCompletedWithWrappedCFException(h1);
2078 +        checkCompletedWithWrappedCFException(h2);
2079 +        checkCompletedWithWrappedCFException(h3);
2080 +        r1.assertInvoked();
2081 +        r2.assertInvoked();
2082 +        r3.assertInvoked();
2083 +        checkCompletedNormally(f, v1);
2084 +        checkCompletedNormally(g, v2);
2085 +    }}
2086 +
2087 +    /**
2088 +     * applyToEither result completes normally after normal completion
2089 +     * of either source
2090 +     */
2091 +    public void testApplyToEither_normalCompletion() {
2092 +        for (ExecutionMode m : ExecutionMode.values())
2093 +        for (Integer v1 : new Integer[] { 1, null })
2094 +        for (Integer v2 : new Integer[] { 2, null })
2095 +    {
2096 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2097 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2098 +        final IncFunction[] rs = new IncFunction[6];
2099 +        for (int i = 0; i < rs.length; i++) rs[i] = new IncFunction(m);
2100 +
2101 +        final CompletableFuture<Integer> h0 = m.applyToEither(f, g, rs[0]);
2102 +        final CompletableFuture<Integer> h1 = m.applyToEither(g, f, rs[1]);
2103 +        checkIncomplete(h0);
2104 +        checkIncomplete(h1);
2105 +        rs[0].assertNotInvoked();
2106 +        rs[1].assertNotInvoked();
2107 +        f.complete(v1);
2108 +        checkCompletedNormally(h0, inc(v1));
2109 +        checkCompletedNormally(h1, inc(v1));
2110 +        final CompletableFuture<Integer> h2 = m.applyToEither(f, g, rs[2]);
2111 +        final CompletableFuture<Integer> h3 = m.applyToEither(g, f, rs[3]);
2112 +        checkCompletedNormally(h2, inc(v1));
2113 +        checkCompletedNormally(h3, inc(v1));
2114 +        g.complete(v2);
2115 +
2116 +        // unspecified behavior - both source completions available
2117 +        final CompletableFuture<Integer> h4 = m.applyToEither(f, g, rs[4]);
2118 +        final CompletableFuture<Integer> h5 = m.applyToEither(g, f, rs[5]);
2119 +        rs[4].assertValue(h4.join());
2120 +        rs[5].assertValue(h5.join());
2121 +        assertTrue(Objects.equals(inc(v1), h4.join()) ||
2122 +                   Objects.equals(inc(v2), h4.join()));
2123 +        assertTrue(Objects.equals(inc(v1), h5.join()) ||
2124 +                   Objects.equals(inc(v2), h5.join()));
2125 +
2126 +        checkCompletedNormally(f, v1);
2127 +        checkCompletedNormally(g, v2);
2128 +        checkCompletedNormally(h0, inc(v1));
2129 +        checkCompletedNormally(h1, inc(v1));
2130 +        checkCompletedNormally(h2, inc(v1));
2131 +        checkCompletedNormally(h3, inc(v1));
2132 +        for (int i = 0; i < 4; i++) rs[i].assertValue(inc(v1));
2133 +    }}
2134 +
2135 +    /**
2136 +     * applyToEither result completes exceptionally after exceptional
2137 +     * completion of either source
2138 +     */
2139 +    public void testApplyToEither_exceptionalCompletion() {
2140 +        for (ExecutionMode m : ExecutionMode.values())
2141 +        for (Integer v1 : new Integer[] { 1, null })
2142 +    {
2143 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2144 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2145 +        final CFException ex = new CFException();
2146 +        final IncFunction[] rs = new IncFunction[6];
2147 +        for (int i = 0; i < rs.length; i++) rs[i] = new IncFunction(m);
2148 +
2149 +        final CompletableFuture<Integer> h0 = m.applyToEither(f, g, rs[0]);
2150 +        final CompletableFuture<Integer> h1 = m.applyToEither(g, f, rs[1]);
2151 +        checkIncomplete(h0);
2152 +        checkIncomplete(h1);
2153 +        rs[0].assertNotInvoked();
2154 +        rs[1].assertNotInvoked();
2155 +        f.completeExceptionally(ex);
2156 +        checkCompletedWithWrappedException(h0, ex);
2157 +        checkCompletedWithWrappedException(h1, ex);
2158 +        final CompletableFuture<Integer> h2 = m.applyToEither(f, g, rs[2]);
2159 +        final CompletableFuture<Integer> h3 = m.applyToEither(g, f, rs[3]);
2160 +        checkCompletedWithWrappedException(h2, ex);
2161 +        checkCompletedWithWrappedException(h3, ex);
2162 +        g.complete(v1);
2163 +
2164 +        // unspecified behavior - both source completions available
2165 +        final CompletableFuture<Integer> h4 = m.applyToEither(f, g, rs[4]);
2166 +        final CompletableFuture<Integer> h5 = m.applyToEither(g, f, rs[5]);
2167 +        try {
2168 +            assertEquals(inc(v1), h4.join());
2169 +            rs[4].assertValue(inc(v1));
2170 +        } catch (CompletionException ok) {
2171 +            checkCompletedWithWrappedException(h4, ex);
2172 +            rs[4].assertNotInvoked();
2173 +        }
2174 +        try {
2175 +            assertEquals(inc(v1), h5.join());
2176 +            rs[5].assertValue(inc(v1));
2177 +        } catch (CompletionException ok) {
2178 +            checkCompletedWithWrappedException(h5, ex);
2179 +            rs[5].assertNotInvoked();
2180 +        }
2181 +
2182 +        checkCompletedExceptionally(f, ex);
2183 +        checkCompletedNormally(g, v1);
2184 +        checkCompletedWithWrappedException(h0, ex);
2185 +        checkCompletedWithWrappedException(h1, ex);
2186 +        checkCompletedWithWrappedException(h2, ex);
2187 +        checkCompletedWithWrappedException(h3, ex);
2188 +        checkCompletedWithWrappedException(h4, ex);
2189 +        for (int i = 0; i < 4; i++) rs[i].assertNotInvoked();
2190 +    }}
2191 +
2192 +    public void testApplyToEither_exceptionalCompletion2() {
2193 +        for (ExecutionMode m : ExecutionMode.values())
2194 +        for (boolean fFirst : new boolean[] { true, false })
2195 +        for (Integer v1 : new Integer[] { 1, null })
2196 +    {
2197 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2198 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2199 +        final CFException ex = new CFException();
2200 +        final IncFunction[] rs = new IncFunction[6];
2201 +        for (int i = 0; i < rs.length; i++) rs[i] = new IncFunction(m);
2202 +
2203 +        final CompletableFuture<Integer> h0 = m.applyToEither(f, g, rs[0]);
2204 +        final CompletableFuture<Integer> h1 = m.applyToEither(g, f, rs[1]);
2205 +        assertTrue(fFirst ? f.complete(v1) : g.completeExceptionally(ex));
2206 +        assertTrue(!fFirst ? f.complete(v1) : g.completeExceptionally(ex));
2207 +        final CompletableFuture<Integer> h2 = m.applyToEither(f, g, rs[2]);
2208 +        final CompletableFuture<Integer> h3 = m.applyToEither(g, f, rs[3]);
2209 +
2210 +        // unspecified behavior - both source completions available
2211 +        try {
2212 +            assertEquals(inc(v1), h0.join());
2213 +            rs[0].assertValue(inc(v1));
2214 +        } catch (CompletionException ok) {
2215 +            checkCompletedWithWrappedException(h0, ex);
2216 +            rs[0].assertNotInvoked();
2217 +        }
2218 +        try {
2219 +            assertEquals(inc(v1), h1.join());
2220 +            rs[1].assertValue(inc(v1));
2221 +        } catch (CompletionException ok) {
2222 +            checkCompletedWithWrappedException(h1, ex);
2223 +            rs[1].assertNotInvoked();
2224 +        }
2225 +        try {
2226 +            assertEquals(inc(v1), h2.join());
2227 +            rs[2].assertValue(inc(v1));
2228 +        } catch (CompletionException ok) {
2229 +            checkCompletedWithWrappedException(h2, ex);
2230 +            rs[2].assertNotInvoked();
2231 +        }
2232 +        try {
2233 +            assertEquals(inc(v1), h3.join());
2234 +            rs[3].assertValue(inc(v1));
2235 +        } catch (CompletionException ok) {
2236 +            checkCompletedWithWrappedException(h3, ex);
2237 +            rs[3].assertNotInvoked();
2238 +        }
2239 +
2240 +        checkCompletedNormally(f, v1);
2241 +        checkCompletedExceptionally(g, ex);
2242 +    }}
2243 +
2244 +    /**
2245 +     * applyToEither result completes exceptionally if either source cancelled
2246 +     */
2247 +    public void testApplyToEither_sourceCancelled() {
2248 +        for (ExecutionMode m : ExecutionMode.values())
2249 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2250 +        for (Integer v1 : new Integer[] { 1, null })
2251 +    {
2252 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2253 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2254 +        final IncFunction[] rs = new IncFunction[6];
2255 +        for (int i = 0; i < rs.length; i++) rs[i] = new IncFunction(m);
2256 +
2257 +        final CompletableFuture<Integer> h0 = m.applyToEither(f, g, rs[0]);
2258 +        final CompletableFuture<Integer> h1 = m.applyToEither(g, f, rs[1]);
2259 +        checkIncomplete(h0);
2260 +        checkIncomplete(h1);
2261 +        rs[0].assertNotInvoked();
2262 +        rs[1].assertNotInvoked();
2263 +        f.cancel(mayInterruptIfRunning);
2264 +        checkCompletedWithWrappedCancellationException(h0);
2265 +        checkCompletedWithWrappedCancellationException(h1);
2266 +        final CompletableFuture<Integer> h2 = m.applyToEither(f, g, rs[2]);
2267 +        final CompletableFuture<Integer> h3 = m.applyToEither(g, f, rs[3]);
2268 +        checkCompletedWithWrappedCancellationException(h2);
2269 +        checkCompletedWithWrappedCancellationException(h3);
2270 +        g.complete(v1);
2271 +
2272 +        // unspecified behavior - both source completions available
2273 +        final CompletableFuture<Integer> h4 = m.applyToEither(f, g, rs[4]);
2274 +        final CompletableFuture<Integer> h5 = m.applyToEither(g, f, rs[5]);
2275 +        try {
2276 +            assertEquals(inc(v1), h4.join());
2277 +            rs[4].assertValue(inc(v1));
2278 +        } catch (CompletionException ok) {
2279 +            checkCompletedWithWrappedCancellationException(h4);
2280 +            rs[4].assertNotInvoked();
2281 +        }
2282 +        try {
2283 +            assertEquals(inc(v1), h5.join());
2284 +            rs[5].assertValue(inc(v1));
2285 +        } catch (CompletionException ok) {
2286 +            checkCompletedWithWrappedCancellationException(h5);
2287 +            rs[5].assertNotInvoked();
2288 +        }
2289 +
2290 +        checkCancelled(f);
2291 +        checkCompletedNormally(g, v1);
2292 +        checkCompletedWithWrappedCancellationException(h0);
2293 +        checkCompletedWithWrappedCancellationException(h1);
2294 +        checkCompletedWithWrappedCancellationException(h2);
2295 +        checkCompletedWithWrappedCancellationException(h3);
2296 +        for (int i = 0; i < 4; i++) rs[i].assertNotInvoked();
2297 +    }}
2298 +
2299 +    public void testApplyToEither_sourceCancelled2() {
2300 +        for (ExecutionMode m : ExecutionMode.values())
2301 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2302 +        for (boolean fFirst : new boolean[] { true, false })
2303 +        for (Integer v1 : new Integer[] { 1, null })
2304 +    {
2305 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2306 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2307 +        final IncFunction[] rs = new IncFunction[6];
2308 +        for (int i = 0; i < rs.length; i++) rs[i] = new IncFunction(m);
2309 +
2310 +        final CompletableFuture<Integer> h0 = m.applyToEither(f, g, rs[0]);
2311 +        final CompletableFuture<Integer> h1 = m.applyToEither(g, f, rs[1]);
2312 +        assertTrue(fFirst ? f.complete(v1) : g.cancel(mayInterruptIfRunning));
2313 +        assertTrue(!fFirst ? f.complete(v1) : g.cancel(mayInterruptIfRunning));
2314 +        final CompletableFuture<Integer> h2 = m.applyToEither(f, g, rs[2]);
2315 +        final CompletableFuture<Integer> h3 = m.applyToEither(g, f, rs[3]);
2316 +
2317 +        // unspecified behavior - both source completions available
2318 +        try {
2319 +            assertEquals(inc(v1), h0.join());
2320 +            rs[0].assertValue(inc(v1));
2321 +        } catch (CompletionException ok) {
2322 +            checkCompletedWithWrappedCancellationException(h0);
2323 +            rs[0].assertNotInvoked();
2324 +        }
2325 +        try {
2326 +            assertEquals(inc(v1), h1.join());
2327 +            rs[1].assertValue(inc(v1));
2328 +        } catch (CompletionException ok) {
2329 +            checkCompletedWithWrappedCancellationException(h1);
2330 +            rs[1].assertNotInvoked();
2331 +        }
2332 +        try {
2333 +            assertEquals(inc(v1), h2.join());
2334 +            rs[2].assertValue(inc(v1));
2335 +        } catch (CompletionException ok) {
2336 +            checkCompletedWithWrappedCancellationException(h2);
2337 +            rs[2].assertNotInvoked();
2338 +        }
2339 +        try {
2340 +            assertEquals(inc(v1), h3.join());
2341 +            rs[3].assertValue(inc(v1));
2342 +        } catch (CompletionException ok) {
2343 +            checkCompletedWithWrappedCancellationException(h3);
2344 +            rs[3].assertNotInvoked();
2345 +        }
2346 +
2347 +        checkCompletedNormally(f, v1);
2348 +        checkCancelled(g);
2349 +    }}
2350 +
2351 +    /**
2352 +     * applyToEither result completes exceptionally if action does
2353 +     */
2354 +    public void testApplyToEither_actionFailed() {
2355 +        for (ExecutionMode m : ExecutionMode.values())
2356 +        for (Integer v1 : new Integer[] { 1, null })
2357 +        for (Integer v2 : new Integer[] { 2, null })
2358 +    {
2359 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2360 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2361 +        final FailingFunction[] rs = new FailingFunction[6];
2362 +        for (int i = 0; i < rs.length; i++) rs[i] = new FailingFunction(m);
2363 +
2364 +        final CompletableFuture<Integer> h0 = m.applyToEither(f, g, rs[0]);
2365 +        final CompletableFuture<Integer> h1 = m.applyToEither(g, f, rs[1]);
2366 +        f.complete(v1);
2367 +        final CompletableFuture<Integer> h2 = m.applyToEither(f, g, rs[2]);
2368 +        final CompletableFuture<Integer> h3 = m.applyToEither(g, f, rs[3]);
2369 +        checkCompletedWithWrappedCFException(h0);
2370 +        checkCompletedWithWrappedCFException(h1);
2371 +        checkCompletedWithWrappedCFException(h2);
2372 +        checkCompletedWithWrappedCFException(h3);
2373 +        for (int i = 0; i < 4; i++) rs[i].assertValue(v1);
2374 +
2375 +        g.complete(v2);
2376 +
2377 +        // unspecified behavior - both source completions available
2378 +        final CompletableFuture<Integer> h4 = m.applyToEither(f, g, rs[4]);
2379 +        final CompletableFuture<Integer> h5 = m.applyToEither(g, f, rs[5]);
2380 +
2381 +        checkCompletedWithWrappedCFException(h4);
2382 +        assertTrue(Objects.equals(v1, rs[4].value) ||
2383 +                   Objects.equals(v2, rs[4].value));
2384 +        checkCompletedWithWrappedCFException(h5);
2385 +        assertTrue(Objects.equals(v1, rs[5].value) ||
2386 +                   Objects.equals(v2, rs[5].value));
2387 +
2388 +        checkCompletedNormally(f, v1);
2389 +        checkCompletedNormally(g, v2);
2390 +    }}
2391 +
2392 +    /**
2393 +     * acceptEither result completes normally after normal completion
2394 +     * of either source
2395 +     */
2396 +    public void testAcceptEither_normalCompletion() {
2397 +        for (ExecutionMode m : ExecutionMode.values())
2398 +        for (Integer v1 : new Integer[] { 1, null })
2399 +        for (Integer v2 : new Integer[] { 2, null })
2400 +    {
2401 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2402 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2403 +        final NoopConsumer[] rs = new NoopConsumer[6];
2404 +        for (int i = 0; i < rs.length; i++) rs[i] = new NoopConsumer(m);
2405 +
2406 +        final CompletableFuture<Void> h0 = m.acceptEither(f, g, rs[0]);
2407 +        final CompletableFuture<Void> h1 = m.acceptEither(g, f, rs[1]);
2408 +        checkIncomplete(h0);
2409 +        checkIncomplete(h1);
2410 +        rs[0].assertNotInvoked();
2411 +        rs[1].assertNotInvoked();
2412 +        f.complete(v1);
2413 +        checkCompletedNormally(h0, null);
2414 +        checkCompletedNormally(h1, null);
2415 +        rs[0].assertValue(v1);
2416 +        rs[1].assertValue(v1);
2417 +        final CompletableFuture<Void> h2 = m.acceptEither(f, g, rs[2]);
2418 +        final CompletableFuture<Void> h3 = m.acceptEither(g, f, rs[3]);
2419 +        checkCompletedNormally(h2, null);
2420 +        checkCompletedNormally(h3, null);
2421 +        rs[2].assertValue(v1);
2422 +        rs[3].assertValue(v1);
2423 +        g.complete(v2);
2424 +
2425 +        // unspecified behavior - both source completions available
2426 +        final CompletableFuture<Void> h4 = m.acceptEither(f, g, rs[4]);
2427 +        final CompletableFuture<Void> h5 = m.acceptEither(g, f, rs[5]);
2428 +        checkCompletedNormally(h4, null);
2429 +        checkCompletedNormally(h5, null);
2430 +        assertTrue(Objects.equals(v1, rs[4].value) ||
2431 +                   Objects.equals(v2, rs[4].value));
2432 +        assertTrue(Objects.equals(v1, rs[5].value) ||
2433 +                   Objects.equals(v2, rs[5].value));
2434 +
2435 +        checkCompletedNormally(f, v1);
2436 +        checkCompletedNormally(g, v2);
2437 +        checkCompletedNormally(h0, null);
2438 +        checkCompletedNormally(h1, null);
2439 +        checkCompletedNormally(h2, null);
2440 +        checkCompletedNormally(h3, null);
2441 +        for (int i = 0; i < 4; i++) rs[i].assertValue(v1);
2442 +    }}
2443 +
2444 +    /**
2445 +     * acceptEither result completes exceptionally after exceptional
2446 +     * completion of either source
2447 +     */
2448 +    public void testAcceptEither_exceptionalCompletion() {
2449 +        for (ExecutionMode m : ExecutionMode.values())
2450 +        for (Integer v1 : new Integer[] { 1, null })
2451 +    {
2452 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2453 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2454 +        final CFException ex = new CFException();
2455 +        final NoopConsumer[] rs = new NoopConsumer[6];
2456 +        for (int i = 0; i < rs.length; i++) rs[i] = new NoopConsumer(m);
2457 +
2458 +        final CompletableFuture<Void> h0 = m.acceptEither(f, g, rs[0]);
2459 +        final CompletableFuture<Void> h1 = m.acceptEither(g, f, rs[1]);
2460 +        checkIncomplete(h0);
2461 +        checkIncomplete(h1);
2462 +        rs[0].assertNotInvoked();
2463 +        rs[1].assertNotInvoked();
2464 +        f.completeExceptionally(ex);
2465 +        checkCompletedWithWrappedException(h0, ex);
2466 +        checkCompletedWithWrappedException(h1, ex);
2467 +        final CompletableFuture<Void> h2 = m.acceptEither(f, g, rs[2]);
2468 +        final CompletableFuture<Void> h3 = m.acceptEither(g, f, rs[3]);
2469 +        checkCompletedWithWrappedException(h2, ex);
2470 +        checkCompletedWithWrappedException(h3, ex);
2471 +
2472 +        g.complete(v1);
2473 +
2474 +        // unspecified behavior - both source completions available
2475 +        final CompletableFuture<Void> h4 = m.acceptEither(f, g, rs[4]);
2476 +        final CompletableFuture<Void> h5 = m.acceptEither(g, f, rs[5]);
2477 +        try {
2478 +            assertNull(h4.join());
2479 +            rs[4].assertValue(v1);
2480 +        } catch (CompletionException ok) {
2481 +            checkCompletedWithWrappedException(h4, ex);
2482 +            rs[4].assertNotInvoked();
2483 +        }
2484 +        try {
2485 +            assertNull(h5.join());
2486 +            rs[5].assertValue(v1);
2487 +        } catch (CompletionException ok) {
2488 +            checkCompletedWithWrappedException(h5, ex);
2489 +            rs[5].assertNotInvoked();
2490 +        }
2491 +
2492 +        checkCompletedExceptionally(f, ex);
2493 +        checkCompletedNormally(g, v1);
2494 +        checkCompletedWithWrappedException(h0, ex);
2495 +        checkCompletedWithWrappedException(h1, ex);
2496 +        checkCompletedWithWrappedException(h2, ex);
2497 +        checkCompletedWithWrappedException(h3, ex);
2498 +        checkCompletedWithWrappedException(h4, ex);
2499 +        for (int i = 0; i < 4; i++) rs[i].assertNotInvoked();
2500 +    }}
2501 +
2502 +    public void testAcceptEither_exceptionalCompletion2() {
2503 +        for (ExecutionMode m : ExecutionMode.values())
2504 +        for (boolean fFirst : new boolean[] { true, false })
2505 +        for (Integer v1 : new Integer[] { 1, null })
2506 +    {
2507 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2508 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2509 +        final CFException ex = new CFException();
2510 +        final NoopConsumer[] rs = new NoopConsumer[6];
2511 +        for (int i = 0; i < rs.length; i++) rs[i] = new NoopConsumer(m);
2512 +
2513 +        final CompletableFuture<Void> h0 = m.acceptEither(f, g, rs[0]);
2514 +        final CompletableFuture<Void> h1 = m.acceptEither(g, f, rs[1]);
2515 +        assertTrue(fFirst ? f.complete(v1) : g.completeExceptionally(ex));
2516 +        assertTrue(!fFirst ? f.complete(v1) : g.completeExceptionally(ex));
2517 +        final CompletableFuture<Void> h2 = m.acceptEither(f, g, rs[2]);
2518 +        final CompletableFuture<Void> h3 = m.acceptEither(g, f, rs[3]);
2519 +
2520 +        // unspecified behavior - both source completions available
2521 +        try {
2522 +            assertEquals(null, h0.join());
2523 +            rs[0].assertValue(v1);
2524 +        } catch (CompletionException ok) {
2525 +            checkCompletedWithWrappedException(h0, ex);
2526 +            rs[0].assertNotInvoked();
2527 +        }
2528 +        try {
2529 +            assertEquals(null, h1.join());
2530 +            rs[1].assertValue(v1);
2531 +        } catch (CompletionException ok) {
2532 +            checkCompletedWithWrappedException(h1, ex);
2533 +            rs[1].assertNotInvoked();
2534 +        }
2535 +        try {
2536 +            assertEquals(null, h2.join());
2537 +            rs[2].assertValue(v1);
2538 +        } catch (CompletionException ok) {
2539 +            checkCompletedWithWrappedException(h2, ex);
2540 +            rs[2].assertNotInvoked();
2541 +        }
2542 +        try {
2543 +            assertEquals(null, h3.join());
2544 +            rs[3].assertValue(v1);
2545 +        } catch (CompletionException ok) {
2546 +            checkCompletedWithWrappedException(h3, ex);
2547 +            rs[3].assertNotInvoked();
2548 +        }
2549 +
2550 +        checkCompletedNormally(f, v1);
2551 +        checkCompletedExceptionally(g, ex);
2552 +    }}
2553 +
2554 +    /**
2555 +     * acceptEither result completes exceptionally if either source cancelled
2556 +     */
2557 +    public void testAcceptEither_sourceCancelled() {
2558 +        for (ExecutionMode m : ExecutionMode.values())
2559 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2560 +        for (Integer v1 : new Integer[] { 1, null })
2561 +    {
2562 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2563 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2564 +        final NoopConsumer[] rs = new NoopConsumer[6];
2565 +        for (int i = 0; i < rs.length; i++) rs[i] = new NoopConsumer(m);
2566 +
2567 +        final CompletableFuture<Void> h0 = m.acceptEither(f, g, rs[0]);
2568 +        final CompletableFuture<Void> h1 = m.acceptEither(g, f, rs[1]);
2569 +        checkIncomplete(h0);
2570 +        checkIncomplete(h1);
2571 +        rs[0].assertNotInvoked();
2572 +        rs[1].assertNotInvoked();
2573 +        f.cancel(mayInterruptIfRunning);
2574 +        checkCompletedWithWrappedCancellationException(h0);
2575 +        checkCompletedWithWrappedCancellationException(h1);
2576 +        final CompletableFuture<Void> h2 = m.acceptEither(f, g, rs[2]);
2577 +        final CompletableFuture<Void> h3 = m.acceptEither(g, f, rs[3]);
2578 +        checkCompletedWithWrappedCancellationException(h2);
2579 +        checkCompletedWithWrappedCancellationException(h3);
2580 +
2581 +        g.complete(v1);
2582 +
2583 +        // unspecified behavior - both source completions available
2584 +        final CompletableFuture<Void> h4 = m.acceptEither(f, g, rs[4]);
2585 +        final CompletableFuture<Void> h5 = m.acceptEither(g, f, rs[5]);
2586 +        try {
2587 +            assertNull(h4.join());
2588 +            rs[4].assertValue(v1);
2589 +        } catch (CompletionException ok) {
2590 +            checkCompletedWithWrappedCancellationException(h4);
2591 +            rs[4].assertNotInvoked();
2592 +        }
2593 +        try {
2594 +            assertNull(h5.join());
2595 +            rs[5].assertValue(v1);
2596 +        } catch (CompletionException ok) {
2597 +            checkCompletedWithWrappedCancellationException(h5);
2598 +            rs[5].assertNotInvoked();
2599 +        }
2600 +
2601 +        checkCancelled(f);
2602 +        checkCompletedNormally(g, v1);
2603 +        checkCompletedWithWrappedCancellationException(h0);
2604 +        checkCompletedWithWrappedCancellationException(h1);
2605 +        checkCompletedWithWrappedCancellationException(h2);
2606 +        checkCompletedWithWrappedCancellationException(h3);
2607 +        for (int i = 0; i < 4; i++) rs[i].assertNotInvoked();
2608 +    }}
2609 +
2610 +    /**
2611 +     * acceptEither result completes exceptionally if action does
2612 +     */
2613 +    public void testAcceptEither_actionFailed() {
2614 +        for (ExecutionMode m : ExecutionMode.values())
2615 +        for (Integer v1 : new Integer[] { 1, null })
2616 +        for (Integer v2 : new Integer[] { 2, null })
2617 +    {
2618 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2619 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2620 +        final FailingConsumer[] rs = new FailingConsumer[6];
2621 +        for (int i = 0; i < rs.length; i++) rs[i] = new FailingConsumer(m);
2622 +
2623 +        final CompletableFuture<Void> h0 = m.acceptEither(f, g, rs[0]);
2624 +        final CompletableFuture<Void> h1 = m.acceptEither(g, f, rs[1]);
2625 +        f.complete(v1);
2626 +        final CompletableFuture<Void> h2 = m.acceptEither(f, g, rs[2]);
2627 +        final CompletableFuture<Void> h3 = m.acceptEither(g, f, rs[3]);
2628 +        checkCompletedWithWrappedCFException(h0);
2629 +        checkCompletedWithWrappedCFException(h1);
2630 +        checkCompletedWithWrappedCFException(h2);
2631 +        checkCompletedWithWrappedCFException(h3);
2632 +        for (int i = 0; i < 4; i++) rs[i].assertValue(v1);
2633 +
2634 +        g.complete(v2);
2635 +
2636 +        // unspecified behavior - both source completions available
2637 +        final CompletableFuture<Void> h4 = m.acceptEither(f, g, rs[4]);
2638 +        final CompletableFuture<Void> h5 = m.acceptEither(g, f, rs[5]);
2639 +
2640 +        checkCompletedWithWrappedCFException(h4);
2641 +        assertTrue(Objects.equals(v1, rs[4].value) ||
2642 +                   Objects.equals(v2, rs[4].value));
2643 +        checkCompletedWithWrappedCFException(h5);
2644 +        assertTrue(Objects.equals(v1, rs[5].value) ||
2645 +                   Objects.equals(v2, rs[5].value));
2646 +
2647 +        checkCompletedNormally(f, v1);
2648 +        checkCompletedNormally(g, v2);
2649 +    }}
2650 +
2651 +    /**
2652 +     * runAfterEither result completes normally after normal completion
2653 +     * of either source
2654 +     */
2655 +    public void testRunAfterEither_normalCompletion() {
2656 +        for (ExecutionMode m : ExecutionMode.values())
2657 +        for (Integer v1 : new Integer[] { 1, null })
2658 +        for (Integer v2 : new Integer[] { 2, null })
2659 +    {
2660 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2661 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2662 +        final Noop[] rs = new Noop[6];
2663 +        for (int i = 0; i < rs.length; i++) rs[i] = new Noop(m);
2664 +
2665 +        final CompletableFuture<Void> h0 = m.runAfterEither(f, g, rs[0]);
2666 +        final CompletableFuture<Void> h1 = m.runAfterEither(g, f, rs[1]);
2667 +        checkIncomplete(h0);
2668 +        checkIncomplete(h1);
2669 +        rs[0].assertNotInvoked();
2670 +        rs[1].assertNotInvoked();
2671 +        f.complete(v1);
2672 +        checkCompletedNormally(h0, null);
2673 +        checkCompletedNormally(h1, null);
2674 +        rs[0].assertInvoked();
2675 +        rs[1].assertInvoked();
2676 +        final CompletableFuture<Void> h2 = m.runAfterEither(f, g, rs[2]);
2677 +        final CompletableFuture<Void> h3 = m.runAfterEither(g, f, rs[3]);
2678 +        checkCompletedNormally(h2, null);
2679 +        checkCompletedNormally(h3, null);
2680 +        rs[2].assertInvoked();
2681 +        rs[3].assertInvoked();
2682 +
2683 +        g.complete(v2);
2684 +
2685 +        final CompletableFuture<Void> h4 = m.runAfterEither(f, g, rs[4]);
2686 +        final CompletableFuture<Void> h5 = m.runAfterEither(g, f, rs[5]);
2687 +
2688 +        checkCompletedNormally(f, v1);
2689 +        checkCompletedNormally(g, v2);
2690 +        checkCompletedNormally(h0, null);
2691 +        checkCompletedNormally(h1, null);
2692 +        checkCompletedNormally(h2, null);
2693 +        checkCompletedNormally(h3, null);
2694 +        checkCompletedNormally(h4, null);
2695 +        checkCompletedNormally(h5, null);
2696 +        for (int i = 0; i < 6; i++) rs[i].assertInvoked();
2697 +    }}
2698 +
2699 +    /**
2700 +     * runAfterEither result completes exceptionally after exceptional
2701 +     * completion of either source
2702 +     */
2703 +    public void testRunAfterEither_exceptionalCompletion() {
2704 +        for (ExecutionMode m : ExecutionMode.values())
2705 +        for (Integer v1 : new Integer[] { 1, null })
2706 +    {
2707 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2708 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2709 +        final CFException ex = new CFException();
2710 +        final Noop[] rs = new Noop[6];
2711 +        for (int i = 0; i < rs.length; i++) rs[i] = new Noop(m);
2712 +
2713 +        final CompletableFuture<Void> h0 = m.runAfterEither(f, g, rs[0]);
2714 +        final CompletableFuture<Void> h1 = m.runAfterEither(g, f, rs[1]);
2715 +        checkIncomplete(h0);
2716 +        checkIncomplete(h1);
2717 +        rs[0].assertNotInvoked();
2718 +        rs[1].assertNotInvoked();
2719 +        assertTrue(f.completeExceptionally(ex));
2720 +        checkCompletedWithWrappedException(h0, ex);
2721 +        checkCompletedWithWrappedException(h1, ex);
2722 +        final CompletableFuture<Void> h2 = m.runAfterEither(f, g, rs[2]);
2723 +        final CompletableFuture<Void> h3 = m.runAfterEither(g, f, rs[3]);
2724 +        checkCompletedWithWrappedException(h2, ex);
2725 +        checkCompletedWithWrappedException(h3, ex);
2726 +
2727 +        assertTrue(g.complete(v1));
2728 +
2729 +        // unspecified behavior - both source completions available
2730 +        final CompletableFuture<Void> h4 = m.runAfterEither(f, g, rs[4]);
2731 +        final CompletableFuture<Void> h5 = m.runAfterEither(g, f, rs[5]);
2732 +        try {
2733 +            assertNull(h4.join());
2734 +            rs[4].assertInvoked();
2735 +        } catch (CompletionException ok) {
2736 +            checkCompletedWithWrappedException(h4, ex);
2737 +            rs[4].assertNotInvoked();
2738 +        }
2739 +        try {
2740 +            assertNull(h5.join());
2741 +            rs[5].assertInvoked();
2742 +        } catch (CompletionException ok) {
2743 +            checkCompletedWithWrappedException(h5, ex);
2744 +            rs[5].assertNotInvoked();
2745 +        }
2746 +
2747 +        checkCompletedExceptionally(f, ex);
2748 +        checkCompletedNormally(g, v1);
2749 +        checkCompletedWithWrappedException(h0, ex);
2750 +        checkCompletedWithWrappedException(h1, ex);
2751 +        checkCompletedWithWrappedException(h2, ex);
2752 +        checkCompletedWithWrappedException(h3, ex);
2753 +        checkCompletedWithWrappedException(h4, ex);
2754 +        for (int i = 0; i < 4; i++) rs[i].assertNotInvoked();
2755 +    }}
2756 +
2757 +    public void testRunAfterEither_exceptionalCompletion2() {
2758 +        for (ExecutionMode m : ExecutionMode.values())
2759 +        for (boolean fFirst : new boolean[] { true, false })
2760 +        for (Integer v1 : new Integer[] { 1, null })
2761 +    {
2762 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2763 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2764 +        final CFException ex = new CFException();
2765 +        final Noop[] rs = new Noop[6];
2766 +        for (int i = 0; i < rs.length; i++) rs[i] = new Noop(m);
2767 +
2768 +        final CompletableFuture<Void> h0 = m.runAfterEither(f, g, rs[0]);
2769 +        final CompletableFuture<Void> h1 = m.runAfterEither(g, f, rs[1]);
2770 +        assertTrue( fFirst ? f.complete(v1) : g.completeExceptionally(ex));
2771 +        assertTrue(!fFirst ? f.complete(v1) : g.completeExceptionally(ex));
2772 +        final CompletableFuture<Void> h2 = m.runAfterEither(f, g, rs[2]);
2773 +        final CompletableFuture<Void> h3 = m.runAfterEither(g, f, rs[3]);
2774 +
2775 +        // unspecified behavior - both source completions available
2776 +        try {
2777 +            assertEquals(null, h0.join());
2778 +            rs[0].assertInvoked();
2779 +        } catch (CompletionException ok) {
2780 +            checkCompletedWithWrappedException(h0, ex);
2781 +            rs[0].assertNotInvoked();
2782 +        }
2783 +        try {
2784 +            assertEquals(null, h1.join());
2785 +            rs[1].assertInvoked();
2786 +        } catch (CompletionException ok) {
2787 +            checkCompletedWithWrappedException(h1, ex);
2788 +            rs[1].assertNotInvoked();
2789 +        }
2790 +        try {
2791 +            assertEquals(null, h2.join());
2792 +            rs[2].assertInvoked();
2793 +        } catch (CompletionException ok) {
2794 +            checkCompletedWithWrappedException(h2, ex);
2795 +            rs[2].assertNotInvoked();
2796 +        }
2797 +        try {
2798 +            assertEquals(null, h3.join());
2799 +            rs[3].assertInvoked();
2800 +        } catch (CompletionException ok) {
2801 +            checkCompletedWithWrappedException(h3, ex);
2802 +            rs[3].assertNotInvoked();
2803 +        }
2804 +
2805 +        checkCompletedNormally(f, v1);
2806 +        checkCompletedExceptionally(g, ex);
2807 +    }}
2808 +
2809 +    /**
2810 +     * runAfterEither result completes exceptionally if either source cancelled
2811 +     */
2812 +    public void testRunAfterEither_sourceCancelled() {
2813 +        for (ExecutionMode m : ExecutionMode.values())
2814 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2815 +        for (Integer v1 : new Integer[] { 1, null })
2816 +    {
2817 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2818 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2819 +        final Noop[] rs = new Noop[6];
2820 +        for (int i = 0; i < rs.length; i++) rs[i] = new Noop(m);
2821 +
2822 +        final CompletableFuture<Void> h0 = m.runAfterEither(f, g, rs[0]);
2823 +        final CompletableFuture<Void> h1 = m.runAfterEither(g, f, rs[1]);
2824 +        checkIncomplete(h0);
2825 +        checkIncomplete(h1);
2826 +        rs[0].assertNotInvoked();
2827 +        rs[1].assertNotInvoked();
2828 +        f.cancel(mayInterruptIfRunning);
2829 +        checkCompletedWithWrappedCancellationException(h0);
2830 +        checkCompletedWithWrappedCancellationException(h1);
2831 +        final CompletableFuture<Void> h2 = m.runAfterEither(f, g, rs[2]);
2832 +        final CompletableFuture<Void> h3 = m.runAfterEither(g, f, rs[3]);
2833 +        checkCompletedWithWrappedCancellationException(h2);
2834 +        checkCompletedWithWrappedCancellationException(h3);
2835 +
2836 +        assertTrue(g.complete(v1));
2837 +
2838 +        // unspecified behavior - both source completions available
2839 +        final CompletableFuture<Void> h4 = m.runAfterEither(f, g, rs[4]);
2840 +        final CompletableFuture<Void> h5 = m.runAfterEither(g, f, rs[5]);
2841 +        try {
2842 +            assertNull(h4.join());
2843 +            rs[4].assertInvoked();
2844 +        } catch (CompletionException ok) {
2845 +            checkCompletedWithWrappedCancellationException(h4);
2846 +            rs[4].assertNotInvoked();
2847 +        }
2848 +        try {
2849 +            assertNull(h5.join());
2850 +            rs[5].assertInvoked();
2851 +        } catch (CompletionException ok) {
2852 +            checkCompletedWithWrappedCancellationException(h5);
2853 +            rs[5].assertNotInvoked();
2854 +        }
2855 +
2856 +        checkCancelled(f);
2857 +        checkCompletedNormally(g, v1);
2858 +        checkCompletedWithWrappedCancellationException(h0);
2859 +        checkCompletedWithWrappedCancellationException(h1);
2860 +        checkCompletedWithWrappedCancellationException(h2);
2861 +        checkCompletedWithWrappedCancellationException(h3);
2862 +        for (int i = 0; i < 4; i++) rs[i].assertNotInvoked();
2863 +    }}
2864 +
2865 +    /**
2866 +     * runAfterEither result completes exceptionally if action does
2867 +     */
2868 +    public void testRunAfterEither_actionFailed() {
2869 +        for (ExecutionMode m : ExecutionMode.values())
2870 +        for (Integer v1 : new Integer[] { 1, null })
2871 +        for (Integer v2 : new Integer[] { 2, null })
2872 +    {
2873 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2874 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2875 +        final FailingRunnable[] rs = new FailingRunnable[6];
2876 +        for (int i = 0; i < rs.length; i++) rs[i] = new FailingRunnable(m);
2877 +
2878 +        final CompletableFuture<Void> h0 = m.runAfterEither(f, g, rs[0]);
2879 +        final CompletableFuture<Void> h1 = m.runAfterEither(g, f, rs[1]);
2880 +        assertTrue(f.complete(v1));
2881 +        final CompletableFuture<Void> h2 = m.runAfterEither(f, g, rs[2]);
2882 +        final CompletableFuture<Void> h3 = m.runAfterEither(g, f, rs[3]);
2883 +        checkCompletedWithWrappedCFException(h0);
2884 +        checkCompletedWithWrappedCFException(h1);
2885 +        checkCompletedWithWrappedCFException(h2);
2886 +        checkCompletedWithWrappedCFException(h3);
2887 +        for (int i = 0; i < 4; i++) rs[i].assertInvoked();
2888 +        assertTrue(g.complete(v2));
2889 +        final CompletableFuture<Void> h4 = m.runAfterEither(f, g, rs[4]);
2890 +        final CompletableFuture<Void> h5 = m.runAfterEither(g, f, rs[5]);
2891 +        checkCompletedWithWrappedCFException(h4);
2892 +        checkCompletedWithWrappedCFException(h5);
2893 +
2894 +        checkCompletedNormally(f, v1);
2895 +        checkCompletedNormally(g, v2);
2896 +        for (int i = 0; i < 6; i++) rs[i].assertInvoked();
2897 +    }}
2898 +
2899 +    /**
2900 +     * thenCompose result completes normally after normal completion of source
2901 +     */
2902 +    public void testThenCompose_normalCompletion() {
2903 +        for (ExecutionMode m : ExecutionMode.values())
2904 +        for (boolean createIncomplete : new boolean[] { true, false })
2905 +        for (Integer v1 : new Integer[] { 1, null })
2906 +    {
2907 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2908 +        final CompletableFutureInc r = new CompletableFutureInc(m);
2909 +        if (!createIncomplete) assertTrue(f.complete(v1));
2910 +        final CompletableFuture<Integer> g = m.thenCompose(f, r);
2911 +        if (createIncomplete) assertTrue(f.complete(v1));
2912 +
2913 +        checkCompletedNormally(g, inc(v1));
2914 +        checkCompletedNormally(f, v1);
2915 +        r.assertValue(v1);
2916 +    }}
2917 +
2918 +    /**
2919 +     * thenCompose result completes exceptionally after exceptional
2920 +     * completion of source
2921 +     */
2922 +    public void testThenCompose_exceptionalCompletion() {
2923 +        for (ExecutionMode m : ExecutionMode.values())
2924 +        for (boolean createIncomplete : new boolean[] { true, false })
2925 +    {
2926 +        final CFException ex = new CFException();
2927 +        final CompletableFutureInc r = new CompletableFutureInc(m);
2928 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2929 +        if (!createIncomplete) f.completeExceptionally(ex);
2930 +        final CompletableFuture<Integer> g = m.thenCompose(f, r);
2931 +        if (createIncomplete) f.completeExceptionally(ex);
2932 +
2933 +        checkCompletedWithWrappedException(g, ex);
2934 +        checkCompletedExceptionally(f, ex);
2935 +        r.assertNotInvoked();
2936 +    }}
2937 +
2938 +    /**
2939 +     * thenCompose result completes exceptionally if action does
2940 +     */
2941 +    public void testThenCompose_actionFailed() {
2942 +        for (ExecutionMode m : ExecutionMode.values())
2943 +        for (boolean createIncomplete : new boolean[] { true, false })
2944 +        for (Integer v1 : new Integer[] { 1, null })
2945 +    {
2946 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2947 +        final FailingCompletableFutureFunction r
2948 +            = new FailingCompletableFutureFunction(m);
2949 +        if (!createIncomplete) assertTrue(f.complete(v1));
2950 +        final CompletableFuture<Integer> g = m.thenCompose(f, r);
2951 +        if (createIncomplete) assertTrue(f.complete(v1));
2952 +
2953 +        checkCompletedWithWrappedCFException(g);
2954 +        checkCompletedNormally(f, v1);
2955 +    }}
2956 +
2957 +    /**
2958 +     * thenCompose result completes exceptionally if source cancelled
2959 +     */
2960 +    public void testThenCompose_sourceCancelled() {
2961 +        for (ExecutionMode m : ExecutionMode.values())
2962 +        for (boolean createIncomplete : new boolean[] { true, false })
2963 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2964 +    {
2965 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2966 +        final CompletableFutureInc r = new CompletableFutureInc(m);
2967 +        if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
2968 +        final CompletableFuture<Integer> g = m.thenCompose(f, r);
2969 +        if (createIncomplete) {
2970 +            checkIncomplete(g);
2971 +            assertTrue(f.cancel(mayInterruptIfRunning));
2972 +        }
2973 +
2974 +        checkCompletedWithWrappedCancellationException(g);
2975 +        checkCancelled(f);
2976 +    }}
2977 +
2978 +    // other static methods
2979 +
2980      /**
2981       * allOf(no component futures) returns a future completed normally
2982       * with the value null
2983       */
2984      public void testAllOf_empty() throws Exception {
2985 <        CompletableFuture<?> f = CompletableFuture.allOf();
2985 >        CompletableFuture<Void> f = CompletableFuture.allOf();
2986          checkCompletedNormally(f, null);
2987      }
2988  
2989      /**
2990 +     * allOf returns a future completed normally with the value null
2991 +     * when all components complete normally
2992 +     */
2993 +    public void testAllOf_normal() throws Exception {
2994 +        for (int k = 1; k < 10; k++) {
2995 +            CompletableFuture<Integer>[] fs
2996 +                = (CompletableFuture<Integer>[]) new CompletableFuture[k];
2997 +            for (int i = 0; i < k; i++)
2998 +                fs[i] = new CompletableFuture<>();
2999 +            CompletableFuture<Void> f = CompletableFuture.allOf(fs);
3000 +            for (int i = 0; i < k; i++) {
3001 +                checkIncomplete(f);
3002 +                checkIncomplete(CompletableFuture.allOf(fs));
3003 +                fs[i].complete(one);
3004 +            }
3005 +            checkCompletedNormally(f, null);
3006 +            checkCompletedNormally(CompletableFuture.allOf(fs), null);
3007 +        }
3008 +    }
3009 +
3010 +    public void testAllOf_backwards() throws Exception {
3011 +        for (int k = 1; k < 10; k++) {
3012 +            CompletableFuture<Integer>[] fs
3013 +                = (CompletableFuture<Integer>[]) new CompletableFuture[k];
3014 +            for (int i = 0; i < k; i++)
3015 +                fs[i] = new CompletableFuture<>();
3016 +            CompletableFuture<Void> f = CompletableFuture.allOf(fs);
3017 +            for (int i = k - 1; i >= 0; i--) {
3018 +                checkIncomplete(f);
3019 +                checkIncomplete(CompletableFuture.allOf(fs));
3020 +                fs[i].complete(one);
3021 +            }
3022 +            checkCompletedNormally(f, null);
3023 +            checkCompletedNormally(CompletableFuture.allOf(fs), null);
3024 +        }
3025 +    }
3026 +
3027 +    public void testAllOf_exceptional() throws Exception {
3028 +        for (int k = 1; k < 10; k++) {
3029 +            CompletableFuture<Integer>[] fs
3030 +                = (CompletableFuture<Integer>[]) new CompletableFuture[k];
3031 +            CFException ex = new CFException();
3032 +            for (int i = 0; i < k; i++)
3033 +                fs[i] = new CompletableFuture<>();
3034 +            CompletableFuture<Void> f = CompletableFuture.allOf(fs);
3035 +            for (int i = 0; i < k; i++) {
3036 +                checkIncomplete(f);
3037 +                checkIncomplete(CompletableFuture.allOf(fs));
3038 +                if (i != k/2) {
3039 +                    fs[i].complete(i);
3040 +                    checkCompletedNormally(fs[i], i);
3041 +                } else {
3042 +                    fs[i].completeExceptionally(ex);
3043 +                    checkCompletedExceptionally(fs[i], ex);
3044 +                }
3045 +            }
3046 +            checkCompletedWithWrappedException(f, ex);
3047 +            checkCompletedWithWrappedException(CompletableFuture.allOf(fs), ex);
3048 +        }
3049 +    }
3050 +
3051 +    /**
3052       * anyOf(no component futures) returns an incomplete future
3053       */
3054      public void testAnyOf_empty() throws Exception {
3055 <        CompletableFuture<?> f = CompletableFuture.anyOf();
3055 >        for (Integer v1 : new Integer[] { 1, null })
3056 >    {
3057 >        CompletableFuture<Object> f = CompletableFuture.anyOf();
3058          checkIncomplete(f);
3059 +
3060 +        f.complete(v1);
3061 +        checkCompletedNormally(f, v1);
3062 +    }}
3063 +
3064 +    /**
3065 +     * anyOf returns a future completed normally with a value when
3066 +     * a component future does
3067 +     */
3068 +    public void testAnyOf_normal() throws Exception {
3069 +        for (int k = 0; k < 10; k++) {
3070 +            CompletableFuture[] fs = new CompletableFuture[k];
3071 +            for (int i = 0; i < k; i++)
3072 +                fs[i] = new CompletableFuture<>();
3073 +            CompletableFuture<Object> f = CompletableFuture.anyOf(fs);
3074 +            checkIncomplete(f);
3075 +            for (int i = 0; i < k; i++) {
3076 +                fs[i].complete(i);
3077 +                checkCompletedNormally(f, 0);
3078 +                int x = (int) CompletableFuture.anyOf(fs).join();
3079 +                assertTrue(0 <= x && x <= i);
3080 +            }
3081 +        }
3082      }
3083 +    public void testAnyOf_normal_backwards() throws Exception {
3084 +        for (int k = 0; k < 10; k++) {
3085 +            CompletableFuture[] fs = new CompletableFuture[k];
3086 +            for (int i = 0; i < k; i++)
3087 +                fs[i] = new CompletableFuture<>();
3088 +            CompletableFuture<Object> f = CompletableFuture.anyOf(fs);
3089 +            checkIncomplete(f);
3090 +            for (int i = k - 1; i >= 0; i--) {
3091 +                fs[i].complete(i);
3092 +                checkCompletedNormally(f, k - 1);
3093 +                int x = (int) CompletableFuture.anyOf(fs).join();
3094 +                assertTrue(i <= x && x <= k - 1);
3095 +            }
3096 +        }
3097 +    }
3098 +
3099 +    /**
3100 +     * anyOf result completes exceptionally when any component does.
3101 +     */
3102 +    public void testAnyOf_exceptional() throws Exception {
3103 +        for (int k = 0; k < 10; k++) {
3104 +            CompletableFuture[] fs = new CompletableFuture[k];
3105 +            CFException[] exs = new CFException[k];
3106 +            for (int i = 0; i < k; i++) {
3107 +                fs[i] = new CompletableFuture<>();
3108 +                exs[i] = new CFException();
3109 +            }
3110 +            CompletableFuture<Object> f = CompletableFuture.anyOf(fs);
3111 +            checkIncomplete(f);
3112 +            for (int i = 0; i < k; i++) {
3113 +                fs[i].completeExceptionally(exs[i]);
3114 +                checkCompletedWithWrappedException(f, exs[0]);
3115 +                checkCompletedWithWrappedCFException(CompletableFuture.anyOf(fs));
3116 +            }
3117 +        }
3118 +    }
3119 +
3120 +    public void testAnyOf_exceptional_backwards() throws Exception {
3121 +        for (int k = 0; k < 10; k++) {
3122 +            CompletableFuture[] fs = new CompletableFuture[k];
3123 +            CFException[] exs = new CFException[k];
3124 +            for (int i = 0; i < k; i++) {
3125 +                fs[i] = new CompletableFuture<>();
3126 +                exs[i] = new CFException();
3127 +            }
3128 +            CompletableFuture<Object> f = CompletableFuture.anyOf(fs);
3129 +            checkIncomplete(f);
3130 +            for (int i = k - 1; i >= 0; i--) {
3131 +                fs[i].completeExceptionally(exs[i]);
3132 +                checkCompletedWithWrappedException(f, exs[k - 1]);
3133 +                checkCompletedWithWrappedCFException(CompletableFuture.anyOf(fs));
3134 +            }
3135 +        }
3136 +    }
3137 +
3138 +    /**
3139 +     * Completion methods throw NullPointerException with null arguments
3140 +     */
3141 +    public void testNPE() {
3142 +        CompletableFuture<Integer> f = new CompletableFuture<>();
3143 +        CompletableFuture<Integer> g = new CompletableFuture<>();
3144 +        CompletableFuture<Integer> nullFuture = (CompletableFuture<Integer>)null;
3145 +        CompletableFuture<?> h;
3146 +        ThreadExecutor exec = new ThreadExecutor();
3147 +
3148 +        Runnable[] throwingActions = {
3149 +            () -> CompletableFuture.supplyAsync(null),
3150 +            () -> CompletableFuture.supplyAsync(null, exec),
3151 +            () -> CompletableFuture.supplyAsync(new IntegerSupplier(ExecutionMode.DEFAULT, 42), null),
3152 +
3153 +            () -> CompletableFuture.runAsync(null),
3154 +            () -> CompletableFuture.runAsync(null, exec),
3155 +            () -> CompletableFuture.runAsync(() -> {}, null),
3156 +
3157 +            () -> f.completeExceptionally(null),
3158 +
3159 +            () -> f.thenApply(null),
3160 +            () -> f.thenApplyAsync(null),
3161 +            () -> f.thenApplyAsync((x) -> x, null),
3162 +            () -> f.thenApplyAsync(null, exec),
3163 +
3164 +            () -> f.thenAccept(null),
3165 +            () -> f.thenAcceptAsync(null),
3166 +            () -> f.thenAcceptAsync((x) -> {} , null),
3167 +            () -> f.thenAcceptAsync(null, exec),
3168 +
3169 +            () -> f.thenRun(null),
3170 +            () -> f.thenRunAsync(null),
3171 +            () -> f.thenRunAsync(() -> {} , null),
3172 +            () -> f.thenRunAsync(null, exec),
3173 +
3174 +            () -> f.thenCombine(g, null),
3175 +            () -> f.thenCombineAsync(g, null),
3176 +            () -> f.thenCombineAsync(g, null, exec),
3177 +            () -> f.thenCombine(nullFuture, (x, y) -> x),
3178 +            () -> f.thenCombineAsync(nullFuture, (x, y) -> x),
3179 +            () -> f.thenCombineAsync(nullFuture, (x, y) -> x, exec),
3180 +            () -> f.thenCombineAsync(g, (x, y) -> x, null),
3181 +
3182 +            () -> f.thenAcceptBoth(g, null),
3183 +            () -> f.thenAcceptBothAsync(g, null),
3184 +            () -> f.thenAcceptBothAsync(g, null, exec),
3185 +            () -> f.thenAcceptBoth(nullFuture, (x, y) -> {}),
3186 +            () -> f.thenAcceptBothAsync(nullFuture, (x, y) -> {}),
3187 +            () -> f.thenAcceptBothAsync(nullFuture, (x, y) -> {}, exec),
3188 +            () -> f.thenAcceptBothAsync(g, (x, y) -> {}, null),
3189 +
3190 +            () -> f.runAfterBoth(g, null),
3191 +            () -> f.runAfterBothAsync(g, null),
3192 +            () -> f.runAfterBothAsync(g, null, exec),
3193 +            () -> f.runAfterBoth(nullFuture, () -> {}),
3194 +            () -> f.runAfterBothAsync(nullFuture, () -> {}),
3195 +            () -> f.runAfterBothAsync(nullFuture, () -> {}, exec),
3196 +            () -> f.runAfterBothAsync(g, () -> {}, null),
3197 +
3198 +            () -> f.applyToEither(g, null),
3199 +            () -> f.applyToEitherAsync(g, null),
3200 +            () -> f.applyToEitherAsync(g, null, exec),
3201 +            () -> f.applyToEither(nullFuture, (x) -> x),
3202 +            () -> f.applyToEitherAsync(nullFuture, (x) -> x),
3203 +            () -> f.applyToEitherAsync(nullFuture, (x) -> x, exec),
3204 +            () -> f.applyToEitherAsync(g, (x) -> x, null),
3205 +
3206 +            () -> f.acceptEither(g, null),
3207 +            () -> f.acceptEitherAsync(g, null),
3208 +            () -> f.acceptEitherAsync(g, null, exec),
3209 +            () -> f.acceptEither(nullFuture, (x) -> {}),
3210 +            () -> f.acceptEitherAsync(nullFuture, (x) -> {}),
3211 +            () -> f.acceptEitherAsync(nullFuture, (x) -> {}, exec),
3212 +            () -> f.acceptEitherAsync(g, (x) -> {}, null),
3213 +
3214 +            () -> f.runAfterEither(g, null),
3215 +            () -> f.runAfterEitherAsync(g, null),
3216 +            () -> f.runAfterEitherAsync(g, null, exec),
3217 +            () -> f.runAfterEither(nullFuture, () -> {}),
3218 +            () -> f.runAfterEitherAsync(nullFuture, () -> {}),
3219 +            () -> f.runAfterEitherAsync(nullFuture, () -> {}, exec),
3220 +            () -> f.runAfterEitherAsync(g, () -> {}, null),
3221 +
3222 +            () -> f.thenCompose(null),
3223 +            () -> f.thenComposeAsync(null),
3224 +            () -> f.thenComposeAsync(new CompletableFutureInc(ExecutionMode.EXECUTOR), null),
3225 +            () -> f.thenComposeAsync(null, exec),
3226 +
3227 +            () -> f.exceptionally(null),
3228 +
3229 +            () -> f.handle(null),
3230 +
3231 +            () -> CompletableFuture.allOf((CompletableFuture<?>)null),
3232 +            () -> CompletableFuture.allOf((CompletableFuture<?>[])null),
3233 +            () -> CompletableFuture.allOf(f, null),
3234 +            () -> CompletableFuture.allOf(null, f),
3235 +
3236 +            () -> CompletableFuture.anyOf((CompletableFuture<?>)null),
3237 +            () -> CompletableFuture.anyOf((CompletableFuture<?>[])null),
3238 +            () -> CompletableFuture.anyOf(f, null),
3239 +            () -> CompletableFuture.anyOf(null, f),
3240 +
3241 +            () -> f.obtrudeException(null),
3242 +        };
3243 +
3244 +        assertThrows(NullPointerException.class, throwingActions);
3245 +        assertEquals(0, exec.count.get());
3246 +    }
3247 +
3248 +    /**
3249 +     * toCompletableFuture returns this CompletableFuture.
3250 +     */
3251 +    public void testToCompletableFuture() {
3252 +        CompletableFuture<Integer> f = new CompletableFuture<>();
3253 +        assertSame(f, f.toCompletableFuture());
3254 +    }
3255 +
3256 +    //--- tests of implementation details; not part of official tck ---
3257 +
3258 +    Object resultOf(CompletableFuture<?> f) {
3259 +        try {
3260 +            java.lang.reflect.Field resultField
3261 +                = CompletableFuture.class.getDeclaredField("result");
3262 +            resultField.setAccessible(true);
3263 +            return resultField.get(f);
3264 +        } catch (Throwable t) { throw new AssertionError(t); }
3265 +    }
3266 +
3267 +    public void testExceptionPropagationReusesResultObject() {
3268 +        if (!testImplementationDetails) return;
3269 +        for (ExecutionMode m : ExecutionMode.values())
3270 +    {
3271 +        final CFException ex = new CFException();
3272 +        final CompletableFuture<Integer> v42 = CompletableFuture.completedFuture(42);
3273 +        final CompletableFuture<Integer> incomplete = new CompletableFuture<>();
3274 +
3275 +        List<Function<CompletableFuture<Integer>, CompletableFuture<?>>> funs
3276 +            = new ArrayList<>();
3277 +
3278 +        funs.add((y) -> m.thenRun(y, new Noop(m)));
3279 +        funs.add((y) -> m.thenAccept(y, new NoopConsumer(m)));
3280 +        funs.add((y) -> m.thenApply(y, new IncFunction(m)));
3281 +
3282 +        funs.add((y) -> m.runAfterEither(y, incomplete, new Noop(m)));
3283 +        funs.add((y) -> m.acceptEither(y, incomplete, new NoopConsumer(m)));
3284 +        funs.add((y) -> m.applyToEither(y, incomplete, new IncFunction(m)));
3285 +
3286 +        funs.add((y) -> m.runAfterBoth(y, v42, new Noop(m)));
3287 +        funs.add((y) -> m.thenAcceptBoth(y, v42, new SubtractAction(m)));
3288 +        funs.add((y) -> m.thenCombine(y, v42, new SubtractFunction(m)));
3289 +
3290 +        funs.add((y) -> m.whenComplete(y, (Integer x, Throwable t) -> {}));
3291 +
3292 +        funs.add((y) -> m.thenCompose(y, new CompletableFutureInc(m)));
3293 +
3294 +        funs.add((y) -> CompletableFuture.allOf(new CompletableFuture<?>[] {y, v42}));
3295 +        funs.add((y) -> CompletableFuture.anyOf(new CompletableFuture<?>[] {y, incomplete}));
3296 +
3297 +        for (Function<CompletableFuture<Integer>, CompletableFuture<?>>
3298 +                 fun : funs) {
3299 +            CompletableFuture<Integer> f = new CompletableFuture<>();
3300 +            f.completeExceptionally(ex);
3301 +            CompletableFuture<Integer> src = m.thenApply(f, new IncFunction(m));
3302 +            checkCompletedWithWrappedException(src, ex);
3303 +            CompletableFuture<?> dep = fun.apply(src);
3304 +            checkCompletedWithWrappedException(dep, ex);
3305 +            assertSame(resultOf(src), resultOf(dep));
3306 +        }
3307 +
3308 +        for (Function<CompletableFuture<Integer>, CompletableFuture<?>>
3309 +                 fun : funs) {
3310 +            CompletableFuture<Integer> f = new CompletableFuture<>();
3311 +            CompletableFuture<Integer> src = m.thenApply(f, new IncFunction(m));
3312 +            CompletableFuture<?> dep = fun.apply(src);
3313 +            f.completeExceptionally(ex);
3314 +            checkCompletedWithWrappedException(src, ex);
3315 +            checkCompletedWithWrappedException(dep, ex);
3316 +            assertSame(resultOf(src), resultOf(dep));
3317 +        }
3318 +
3319 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
3320 +        for (Function<CompletableFuture<Integer>, CompletableFuture<?>>
3321 +                 fun : funs) {
3322 +            CompletableFuture<Integer> f = new CompletableFuture<>();
3323 +            f.cancel(mayInterruptIfRunning);
3324 +            checkCancelled(f);
3325 +            CompletableFuture<Integer> src = m.thenApply(f, new IncFunction(m));
3326 +            checkCompletedWithWrappedCancellationException(src);
3327 +            CompletableFuture<?> dep = fun.apply(src);
3328 +            checkCompletedWithWrappedCancellationException(dep);
3329 +            assertSame(resultOf(src), resultOf(dep));
3330 +        }
3331 +
3332 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
3333 +        for (Function<CompletableFuture<Integer>, CompletableFuture<?>>
3334 +                 fun : funs) {
3335 +            CompletableFuture<Integer> f = new CompletableFuture<>();
3336 +            CompletableFuture<Integer> src = m.thenApply(f, new IncFunction(m));
3337 +            CompletableFuture<?> dep = fun.apply(src);
3338 +            f.cancel(mayInterruptIfRunning);
3339 +            checkCancelled(f);
3340 +            checkCompletedWithWrappedCancellationException(src);
3341 +            checkCompletedWithWrappedCancellationException(dep);
3342 +            assertSame(resultOf(src), resultOf(dep));
3343 +        }
3344 +    }}
3345 +
3346   }

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