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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 1.62 by jsr166, Fri Jun 6 01:19:22 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 +    void checkCompletedWithWrappedCFException(CompletableFuture<?> f,
109 +                                              CFException 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 +        assertTrue(f.isDone());
135 +        assertFalse(f.isCancelled());
136 +        assertTrue(f.toString().contains("[Completed exceptionally]"));
137 +    }
138 +
139 +    void checkCancelled(CompletableFuture<?> f) {
140          try {
141 <            assertSame(value, f.join());
141 >            f.get(LONG_DELAY_MS, MILLISECONDS);
142 >            shouldThrow();
143 >        } catch (CancellationException success) {
144          } catch (Throwable fail) { threadUnexpectedException(fail); }
145          try {
146 <            assertSame(value, f.getNow(null));
146 >            f.join();
147 >            shouldThrow();
148 >        } catch (CancellationException success) {}
149 >        try {
150 >            f.getNow(null);
151 >            shouldThrow();
152 >        } catch (CancellationException success) {}
153 >        try {
154 >            f.get();
155 >            shouldThrow();
156 >        } catch (CancellationException success) {
157          } catch (Throwable fail) { threadUnexpectedException(fail); }
158 +        assertTrue(f.isDone());
159 +        assertTrue(f.isCompletedExceptionally());
160 +        assertTrue(f.isCancelled());
161 +        assertTrue(f.toString().contains("[Completed exceptionally]"));
162 +    }
163 +
164 +    void checkCompletedWithWrappedCancellationException(CompletableFuture<?> f) {
165          try {
166 <            assertSame(value, f.get());
166 >            f.get(LONG_DELAY_MS, MILLISECONDS);
167 >            shouldThrow();
168 >        } catch (ExecutionException success) {
169 >            assertTrue(success.getCause() instanceof CancellationException);
170          } catch (Throwable fail) { threadUnexpectedException(fail); }
171          try {
172 <            assertSame(value, f.get(0L, SECONDS));
172 >            f.join();
173 >            shouldThrow();
174 >        } catch (CompletionException success) {
175 >            assertTrue(success.getCause() instanceof CancellationException);
176 >        }
177 >        try {
178 >            f.getNow(null);
179 >            shouldThrow();
180 >        } catch (CompletionException success) {
181 >            assertTrue(success.getCause() instanceof CancellationException);
182 >        }
183 >        try {
184 >            f.get();
185 >            shouldThrow();
186 >        } catch (ExecutionException success) {
187 >            assertTrue(success.getCause() instanceof CancellationException);
188          } catch (Throwable fail) { threadUnexpectedException(fail); }
189 +        assertTrue(f.isDone());
190 +        assertFalse(f.isCancelled());
191 +        assertTrue(f.isCompletedExceptionally());
192 +        assertTrue(f.toString().contains("[Completed exceptionally]"));
193 +    }
194 +
195 +    /**
196 +     * A newly constructed CompletableFuture is incomplete, as indicated
197 +     * by methods isDone, isCancelled, and getNow
198 +     */
199 +    public void testConstructor() {
200 +        CompletableFuture<Integer> f = new CompletableFuture<>();
201 +        checkIncomplete(f);
202 +    }
203 +
204 +    /**
205 +     * complete completes normally, as indicated by methods isDone,
206 +     * isCancelled, join, get, and getNow
207 +     */
208 +    public void testComplete() {
209 +        CompletableFuture<Integer> f = new CompletableFuture<>();
210 +        checkIncomplete(f);
211 +        f.complete(one);
212 +        checkCompletedNormally(f, one);
213 +    }
214 +
215 +    /**
216 +     * completeExceptionally completes exceptionally, as indicated by
217 +     * methods isDone, isCancelled, join, get, and getNow
218 +     */
219 +    public void testCompleteExceptionally() {
220 +        CompletableFuture<Integer> f = new CompletableFuture<>();
221 +        checkIncomplete(f);
222 +        f.completeExceptionally(new CFException());
223 +        checkCompletedWithWrappedCFException(f);
224 +    }
225 +
226 +    /**
227 +     * cancel completes exceptionally and reports cancelled, as indicated by
228 +     * methods isDone, isCancelled, join, get, and getNow
229 +     */
230 +    public void testCancel() {
231 +        CompletableFuture<Integer> f = new CompletableFuture<>();
232 +        checkIncomplete(f);
233 +        assertTrue(f.cancel(true));
234 +        checkCancelled(f);
235 +    }
236 +
237 +    /**
238 +     * obtrudeValue forces completion with given value
239 +     */
240 +    public void testObtrudeValue() {
241 +        CompletableFuture<Integer> f = new CompletableFuture<>();
242 +        checkIncomplete(f);
243 +        f.complete(one);
244 +        checkCompletedNormally(f, one);
245 +        f.obtrudeValue(three);
246 +        checkCompletedNormally(f, three);
247 +        f.obtrudeValue(two);
248 +        checkCompletedNormally(f, two);
249 +        f = new CompletableFuture<>();
250 +        f.obtrudeValue(three);
251 +        checkCompletedNormally(f, three);
252 +        f.obtrudeValue(null);
253 +        checkCompletedNormally(f, null);
254 +        f = new CompletableFuture<>();
255 +        f.completeExceptionally(new CFException());
256 +        f.obtrudeValue(four);
257 +        checkCompletedNormally(f, four);
258      }
259  
260 <    // XXXX Just a skeleton implementation for now.
261 <    public void testTODO() {
262 <        fail("Please add some real tests!");
260 >    /**
261 >     * obtrudeException forces completion with given exception
262 >     */
263 >    public void testObtrudeException() {
264 >        CompletableFuture<Integer> f = new CompletableFuture<>();
265 >        checkIncomplete(f);
266 >        f.complete(one);
267 >        checkCompletedNormally(f, one);
268 >        f.obtrudeException(new CFException());
269 >        checkCompletedWithWrappedCFException(f);
270 >        f = new CompletableFuture<>();
271 >        f.obtrudeException(new CFException());
272 >        checkCompletedWithWrappedCFException(f);
273 >        f = new CompletableFuture<>();
274 >        f.completeExceptionally(new CFException());
275 >        f.obtrudeValue(four);
276 >        checkCompletedNormally(f, four);
277 >        f.obtrudeException(new CFException());
278 >        checkCompletedWithWrappedCFException(f);
279 >    }
280 >
281 >    /**
282 >     * getNumberOfDependents returns number of dependent tasks
283 >     */
284 >    public void testGetNumberOfDependents() {
285 >        CompletableFuture<Integer> f = new CompletableFuture<>();
286 >        assertEquals(0, f.getNumberOfDependents());
287 >        CompletableFuture g = f.thenRun(new Noop(ExecutionMode.DEFAULT));
288 >        assertEquals(1, f.getNumberOfDependents());
289 >        assertEquals(0, g.getNumberOfDependents());
290 >        CompletableFuture h = f.thenRun(new Noop(ExecutionMode.DEFAULT));
291 >        assertEquals(2, f.getNumberOfDependents());
292 >        f.complete(1);
293 >        checkCompletedNormally(g, null);
294 >        assertEquals(0, f.getNumberOfDependents());
295 >        assertEquals(0, g.getNumberOfDependents());
296      }
297  
298 +    /**
299 +     * toString indicates current completion state
300 +     */
301      public void testToString() {
302          CompletableFuture<String> f;
303  
# Line 80 | Line 313 | public class CompletableFutureTest exten
313      }
314  
315      /**
316 +     * completedFuture returns a completed CompletableFuture with given value
317 +     */
318 +    public void testCompletedFuture() {
319 +        CompletableFuture<String> f = CompletableFuture.completedFuture("test");
320 +        checkCompletedNormally(f, "test");
321 +    }
322 +
323 +    abstract class CheckedAction {
324 +        int invocationCount = 0;
325 +        final ExecutionMode m;
326 +        CheckedAction(ExecutionMode m) { this.m = m; }
327 +        void invoked() {
328 +            m.checkExecutionMode();
329 +            assertEquals(0, invocationCount++);
330 +        }
331 +        void assertNotInvoked() { assertEquals(0, invocationCount); }
332 +        void assertInvoked() { assertEquals(1, invocationCount); }
333 +    }
334 +
335 +    abstract class CheckedIntegerAction extends CheckedAction {
336 +        Integer value;
337 +        CheckedIntegerAction(ExecutionMode m) { super(m); }
338 +        void assertValue(Integer expected) {
339 +            assertInvoked();
340 +            assertEquals(expected, value);
341 +        }
342 +    }
343 +
344 +    class IntegerSupplier extends CheckedAction
345 +        implements Supplier<Integer>
346 +    {
347 +        final Integer value;
348 +        IntegerSupplier(ExecutionMode m, Integer value) {
349 +            super(m);
350 +            this.value = value;
351 +        }
352 +        public Integer get() {
353 +            invoked();
354 +            return value;
355 +        }
356 +    }
357 +
358 +    // A function that handles and produces null values as well.
359 +    static Integer inc(Integer x) {
360 +        return (x == null) ? null : x + 1;
361 +    }
362 +
363 +    class IncAction extends CheckedIntegerAction
364 +        implements Consumer<Integer>
365 +    {
366 +        IncAction(ExecutionMode m) { super(m); }
367 +        public void accept(Integer x) {
368 +            invoked();
369 +            value = inc(x);
370 +        }
371 +    }
372 +
373 +    class IncFunction extends CheckedIntegerAction
374 +        implements Function<Integer,Integer>
375 +    {
376 +        IncFunction(ExecutionMode m) { super(m); }
377 +        public Integer apply(Integer x) {
378 +            invoked();
379 +            return value = inc(x);
380 +        }
381 +    }
382 +
383 +    // Choose non-commutative actions for better coverage
384 +    // A non-commutative function that handles and produces null values as well.
385 +    static Integer subtract(Integer x, Integer y) {
386 +        return (x == null && y == null) ? null :
387 +            ((x == null) ? 42 : x.intValue())
388 +            - ((y == null) ? 99 : y.intValue());
389 +    }
390 +
391 +    class SubtractAction extends CheckedIntegerAction
392 +        implements BiConsumer<Integer, Integer>
393 +    {
394 +        SubtractAction(ExecutionMode m) { super(m); }
395 +        public void accept(Integer x, Integer y) {
396 +            invoked();
397 +            value = subtract(x, y);
398 +        }
399 +    }
400 +
401 +    class SubtractFunction extends CheckedIntegerAction
402 +        implements BiFunction<Integer, Integer, Integer>
403 +    {
404 +        SubtractFunction(ExecutionMode m) { super(m); }
405 +        public Integer apply(Integer x, Integer y) {
406 +            invoked();
407 +            return value = subtract(x, y);
408 +        }
409 +    }
410 +
411 +    class Noop extends CheckedAction implements Runnable {
412 +        Noop(ExecutionMode m) { super(m); }
413 +        public void run() {
414 +            invoked();
415 +        }
416 +    }
417 +
418 +    class FailingSupplier extends CheckedAction implements Supplier<Integer>
419 +    {
420 +        FailingSupplier(ExecutionMode m) { super(m); }
421 +        public Integer get() {
422 +            invoked();
423 +            throw new CFException();
424 +        }
425 +    }
426 +
427 +    class FailingConsumer extends CheckedAction implements Consumer<Integer> {
428 +        FailingConsumer(ExecutionMode m) { super(m); }
429 +        public void accept(Integer x) {
430 +            invoked();
431 +            throw new CFException();
432 +        }
433 +    }
434 +
435 +    class FailingBiConsumer extends CheckedAction
436 +        implements BiConsumer<Integer, Integer>
437 +    {
438 +        FailingBiConsumer(ExecutionMode m) { super(m); }
439 +        public void accept(Integer x, Integer y) {
440 +            invoked();
441 +            throw new CFException();
442 +        }
443 +    }
444 +
445 +    class FailingFunction extends CheckedAction
446 +        implements Function<Integer, Integer>
447 +    {
448 +        FailingFunction(ExecutionMode m) { super(m); }
449 +        public Integer apply(Integer x) {
450 +            invoked();
451 +            throw new CFException();
452 +        }
453 +    }
454 +
455 +    class FailingBiFunction extends CheckedAction
456 +        implements BiFunction<Integer, Integer, Integer>
457 +    {
458 +        FailingBiFunction(ExecutionMode m) { super(m); }
459 +        public Integer apply(Integer x, Integer y) {
460 +            invoked();
461 +            throw new CFException();
462 +        }
463 +    }
464 +
465 +    class FailingRunnable extends CheckedAction implements Runnable {
466 +        FailingRunnable(ExecutionMode m) { super(m); }
467 +        public void run() {
468 +            invoked();
469 +            throw new CFException();
470 +        }
471 +    }
472 +
473 +
474 +    class CompletableFutureInc extends CheckedAction
475 +        implements Function<Integer, CompletableFuture<Integer>>
476 +    {
477 +        CompletableFutureInc(ExecutionMode m) { super(m); }
478 +        public CompletableFuture<Integer> apply(Integer x) {
479 +            invoked();
480 +            CompletableFuture<Integer> f = new CompletableFuture<>();
481 +            f.complete(inc(x));
482 +            return f;
483 +        }
484 +    }
485 +
486 +    class FailingCompletableFutureFunction extends CheckedAction
487 +        implements Function<Integer, CompletableFuture<Integer>>
488 +    {
489 +        FailingCompletableFutureFunction(ExecutionMode m) { super(m); }
490 +        public CompletableFuture<Integer> apply(Integer x) {
491 +            invoked();
492 +            throw new CFException();
493 +        }
494 +    }
495 +
496 +    // Used for explicit executor tests
497 +    static final class ThreadExecutor implements Executor {
498 +        final AtomicInteger count = new AtomicInteger(0);
499 +        static final ThreadGroup tg = new ThreadGroup("ThreadExecutor");
500 +        static boolean startedCurrentThread() {
501 +            return Thread.currentThread().getThreadGroup() == tg;
502 +        }
503 +
504 +        public void execute(Runnable r) {
505 +            count.getAndIncrement();
506 +            new Thread(tg, r).start();
507 +        }
508 +    }
509 +
510 +    /**
511 +     * Permits the testing of parallel code for the 3 different
512 +     * execution modes without copy/pasting all the test methods.
513 +     */
514 +    enum ExecutionMode {
515 +        DEFAULT {
516 +            public void checkExecutionMode() {
517 +                assertFalse(ThreadExecutor.startedCurrentThread());
518 +                assertNull(ForkJoinTask.getPool());
519 +            }
520 +            public CompletableFuture<Void> runAsync(Runnable a) {
521 +                throw new UnsupportedOperationException();
522 +            }
523 +            public <U> CompletableFuture<U> supplyAsync(Supplier<U> a) {
524 +                throw new UnsupportedOperationException();
525 +            }
526 +            public <T> CompletableFuture<Void> thenRun
527 +                (CompletableFuture<T> f, Runnable a) {
528 +                return f.thenRun(a);
529 +            }
530 +            public <T> CompletableFuture<Void> thenAccept
531 +                (CompletableFuture<T> f, Consumer<? super T> a) {
532 +                return f.thenAccept(a);
533 +            }
534 +            public <T,U> CompletableFuture<U> thenApply
535 +                (CompletableFuture<T> f, Function<? super T,U> a) {
536 +                return f.thenApply(a);
537 +            }
538 +            public <T,U> CompletableFuture<U> thenCompose
539 +                (CompletableFuture<T> f,
540 +                 Function<? super T,? extends CompletionStage<U>> a) {
541 +                return f.thenCompose(a);
542 +            }
543 +            public <T,U> CompletableFuture<U> handle
544 +                (CompletableFuture<T> f,
545 +                 BiFunction<? super T,Throwable,? extends U> a) {
546 +                return f.handle(a);
547 +            }
548 +            public <T> CompletableFuture<T> whenComplete
549 +                (CompletableFuture<T> f,
550 +                 BiConsumer<? super T,? super Throwable> a) {
551 +                return f.whenComplete(a);
552 +            }
553 +            public <T,U> CompletableFuture<Void> runAfterBoth
554 +                (CompletableFuture<T> f, CompletableFuture<U> g, Runnable a) {
555 +                return f.runAfterBoth(g, a);
556 +            }
557 +            public <T,U> CompletableFuture<Void> thenAcceptBoth
558 +                (CompletableFuture<T> f,
559 +                 CompletionStage<? extends U> g,
560 +                 BiConsumer<? super T,? super U> a) {
561 +                return f.thenAcceptBoth(g, a);
562 +            }
563 +            public <T,U,V> CompletableFuture<V> thenCombine
564 +                (CompletableFuture<T> f,
565 +                 CompletionStage<? extends U> g,
566 +                 BiFunction<? super T,? super U,? extends V> a) {
567 +                return f.thenCombine(g, a);
568 +            }
569 +            public <T> CompletableFuture<Void> runAfterEither
570 +                (CompletableFuture<T> f,
571 +                 CompletionStage<?> g,
572 +                 java.lang.Runnable a) {
573 +                return f.runAfterEither(g, a);
574 +            }
575 +            public <T> CompletableFuture<Void> acceptEither
576 +                (CompletableFuture<T> f,
577 +                 CompletionStage<? extends T> g,
578 +                 Consumer<? super T> a) {
579 +                return f.acceptEither(g, a);
580 +            }
581 +            public <T,U> CompletableFuture<U> applyToEither
582 +                (CompletableFuture<T> f,
583 +                 CompletionStage<? extends T> g,
584 +                 Function<? super T,U> a) {
585 +                return f.applyToEither(g, a);
586 +            }
587 +        },
588 +
589 +        ASYNC {
590 +            public void checkExecutionMode() {
591 +                assertSame(ForkJoinPool.commonPool(),
592 +                           ForkJoinTask.getPool());
593 +            }
594 +            public CompletableFuture<Void> runAsync(Runnable a) {
595 +                return CompletableFuture.runAsync(a);
596 +            }
597 +            public <U> CompletableFuture<U> supplyAsync(Supplier<U> a) {
598 +                return CompletableFuture.supplyAsync(a);
599 +            }
600 +            public <T> CompletableFuture<Void> thenRun
601 +                (CompletableFuture<T> f, Runnable a) {
602 +                return f.thenRunAsync(a);
603 +            }
604 +            public <T> CompletableFuture<Void> thenAccept
605 +                (CompletableFuture<T> f, Consumer<? super T> a) {
606 +                return f.thenAcceptAsync(a);
607 +            }
608 +            public <T,U> CompletableFuture<U> thenApply
609 +                (CompletableFuture<T> f, Function<? super T,U> a) {
610 +                return f.thenApplyAsync(a);
611 +            }
612 +            public <T,U> CompletableFuture<U> thenCompose
613 +                (CompletableFuture<T> f,
614 +                 Function<? super T,? extends CompletionStage<U>> a) {
615 +                return f.thenComposeAsync(a);
616 +            }
617 +            public <T,U> CompletableFuture<U> handle
618 +                (CompletableFuture<T> f,
619 +                 BiFunction<? super T,Throwable,? extends U> a) {
620 +                return f.handleAsync(a);
621 +            }
622 +            public <T> CompletableFuture<T> whenComplete
623 +                (CompletableFuture<T> f,
624 +                 BiConsumer<? super T,? super Throwable> a) {
625 +                return f.whenCompleteAsync(a);
626 +            }
627 +            public <T,U> CompletableFuture<Void> runAfterBoth
628 +                (CompletableFuture<T> f, CompletableFuture<U> g, Runnable a) {
629 +                return f.runAfterBothAsync(g, a);
630 +            }
631 +            public <T,U> CompletableFuture<Void> thenAcceptBoth
632 +                (CompletableFuture<T> f,
633 +                 CompletionStage<? extends U> g,
634 +                 BiConsumer<? super T,? super U> a) {
635 +                return f.thenAcceptBothAsync(g, a);
636 +            }
637 +            public <T,U,V> CompletableFuture<V> thenCombine
638 +                (CompletableFuture<T> f,
639 +                 CompletionStage<? extends U> g,
640 +                 BiFunction<? super T,? super U,? extends V> a) {
641 +                return f.thenCombineAsync(g, a);
642 +            }
643 +            public <T> CompletableFuture<Void> runAfterEither
644 +                (CompletableFuture<T> f,
645 +                 CompletionStage<?> g,
646 +                 java.lang.Runnable a) {
647 +                return f.runAfterEitherAsync(g, a);
648 +            }
649 +            public <T> CompletableFuture<Void> acceptEither
650 +                (CompletableFuture<T> f,
651 +                 CompletionStage<? extends T> g,
652 +                 Consumer<? super T> a) {
653 +                return f.acceptEitherAsync(g, a);
654 +            }
655 +            public <T,U> CompletableFuture<U> applyToEither
656 +                (CompletableFuture<T> f,
657 +                 CompletionStage<? extends T> g,
658 +                 Function<? super T,U> a) {
659 +                return f.applyToEitherAsync(g, a);
660 +            }
661 +        },
662 +
663 +        EXECUTOR {
664 +            public void checkExecutionMode() {
665 +                assertTrue(ThreadExecutor.startedCurrentThread());
666 +            }
667 +            public CompletableFuture<Void> runAsync(Runnable a) {
668 +                return CompletableFuture.runAsync(a, new ThreadExecutor());
669 +            }
670 +            public <U> CompletableFuture<U> supplyAsync(Supplier<U> a) {
671 +                return CompletableFuture.supplyAsync(a, new ThreadExecutor());
672 +            }
673 +            public <T> CompletableFuture<Void> thenRun
674 +                (CompletableFuture<T> f, Runnable a) {
675 +                return f.thenRunAsync(a, new ThreadExecutor());
676 +            }
677 +            public <T> CompletableFuture<Void> thenAccept
678 +                (CompletableFuture<T> f, Consumer<? super T> a) {
679 +                return f.thenAcceptAsync(a, new ThreadExecutor());
680 +            }
681 +            public <T,U> CompletableFuture<U> thenApply
682 +                (CompletableFuture<T> f, Function<? super T,U> a) {
683 +                return f.thenApplyAsync(a, new ThreadExecutor());
684 +            }
685 +            public <T,U> CompletableFuture<U> thenCompose
686 +                (CompletableFuture<T> f,
687 +                 Function<? super T,? extends CompletionStage<U>> a) {
688 +                return f.thenComposeAsync(a, new ThreadExecutor());
689 +            }
690 +            public <T,U> CompletableFuture<U> handle
691 +                (CompletableFuture<T> f,
692 +                 BiFunction<? super T,Throwable,? extends U> a) {
693 +                return f.handleAsync(a, new ThreadExecutor());
694 +            }
695 +            public <T> CompletableFuture<T> whenComplete
696 +                (CompletableFuture<T> f,
697 +                 BiConsumer<? super T,? super Throwable> a) {
698 +                return f.whenCompleteAsync(a, new ThreadExecutor());
699 +            }
700 +            public <T,U> CompletableFuture<Void> runAfterBoth
701 +                (CompletableFuture<T> f, CompletableFuture<U> g, Runnable a) {
702 +                return f.runAfterBothAsync(g, a, new ThreadExecutor());
703 +            }
704 +            public <T,U> CompletableFuture<Void> thenAcceptBoth
705 +                (CompletableFuture<T> f,
706 +                 CompletionStage<? extends U> g,
707 +                 BiConsumer<? super T,? super U> a) {
708 +                return f.thenAcceptBothAsync(g, a, new ThreadExecutor());
709 +            }
710 +            public <T,U,V> CompletableFuture<V> thenCombine
711 +                (CompletableFuture<T> f,
712 +                 CompletionStage<? extends U> g,
713 +                 BiFunction<? super T,? super U,? extends V> a) {
714 +                return f.thenCombineAsync(g, a, new ThreadExecutor());
715 +            }
716 +            public <T> CompletableFuture<Void> runAfterEither
717 +                (CompletableFuture<T> f,
718 +                 CompletionStage<?> g,
719 +                 java.lang.Runnable a) {
720 +                return f.runAfterEitherAsync(g, a, new ThreadExecutor());
721 +            }
722 +            public <T> CompletableFuture<Void> acceptEither
723 +                (CompletableFuture<T> f,
724 +                 CompletionStage<? extends T> g,
725 +                 Consumer<? super T> a) {
726 +                return f.acceptEitherAsync(g, a, new ThreadExecutor());
727 +            }
728 +            public <T,U> CompletableFuture<U> applyToEither
729 +                (CompletableFuture<T> f,
730 +                 CompletionStage<? extends T> g,
731 +                 Function<? super T,U> a) {
732 +                return f.applyToEitherAsync(g, a, new ThreadExecutor());
733 +            }
734 +        };
735 +
736 +        public abstract void checkExecutionMode();
737 +        public abstract CompletableFuture<Void> runAsync(Runnable a);
738 +        public abstract <U> CompletableFuture<U> supplyAsync(Supplier<U> a);
739 +        public abstract <T> CompletableFuture<Void> thenRun
740 +            (CompletableFuture<T> f, Runnable a);
741 +        public abstract <T> CompletableFuture<Void> thenAccept
742 +            (CompletableFuture<T> f, Consumer<? super T> a);
743 +        public abstract <T,U> CompletableFuture<U> thenApply
744 +            (CompletableFuture<T> f, Function<? super T,U> a);
745 +        public abstract <T,U> CompletableFuture<U> thenCompose
746 +            (CompletableFuture<T> f,
747 +             Function<? super T,? extends CompletionStage<U>> a);
748 +        public abstract <T,U> CompletableFuture<U> handle
749 +            (CompletableFuture<T> f,
750 +             BiFunction<? super T,Throwable,? extends U> a);
751 +        public abstract <T> CompletableFuture<T> whenComplete
752 +            (CompletableFuture<T> f,
753 +             BiConsumer<? super T,? super Throwable> a);
754 +        public abstract <T,U> CompletableFuture<Void> runAfterBoth
755 +            (CompletableFuture<T> f, CompletableFuture<U> g, Runnable a);
756 +        public abstract <T,U> CompletableFuture<Void> thenAcceptBoth
757 +            (CompletableFuture<T> f,
758 +             CompletionStage<? extends U> g,
759 +             BiConsumer<? super T,? super U> a);
760 +        public abstract <T,U,V> CompletableFuture<V> thenCombine
761 +            (CompletableFuture<T> f,
762 +             CompletionStage<? extends U> g,
763 +             BiFunction<? super T,? super U,? extends V> a);
764 +        public abstract <T> CompletableFuture<Void> runAfterEither
765 +            (CompletableFuture<T> f,
766 +             CompletionStage<?> g,
767 +             java.lang.Runnable a);
768 +        public abstract <T> CompletableFuture<Void> acceptEither
769 +            (CompletableFuture<T> f,
770 +             CompletionStage<? extends T> g,
771 +             Consumer<? super T> a);
772 +        public abstract <T,U> CompletableFuture<U> applyToEither
773 +            (CompletableFuture<T> f,
774 +             CompletionStage<? extends T> g,
775 +             Function<? super T,U> a);
776 +    }
777 +
778 +    /**
779 +     * exceptionally action is not invoked when source completes
780 +     * normally, and source result is propagated
781 +     */
782 +    public void testExceptionally_normalCompletion() {
783 +        for (boolean createIncomplete : new boolean[] { true, false })
784 +        for (Integer v1 : new Integer[] { 1, null })
785 +    {
786 +        final AtomicInteger a = new AtomicInteger(0);
787 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
788 +        if (!createIncomplete) f.complete(v1);
789 +        final CompletableFuture<Integer> g = f.exceptionally
790 +            ((Throwable t) -> {
791 +                // Should not be called
792 +                a.getAndIncrement();
793 +                throw new AssertionError();
794 +            });
795 +        if (createIncomplete) f.complete(v1);
796 +
797 +        checkCompletedNormally(g, v1);
798 +        checkCompletedNormally(f, v1);
799 +        assertEquals(0, a.get());
800 +    }}
801 +
802 +
803 +    /**
804 +     * exceptionally action completes with function value on source
805 +     * exception
806 +     */
807 +    public void testExceptionally_exceptionalCompletion() {
808 +        for (boolean createIncomplete : new boolean[] { true, false })
809 +        for (Integer v1 : new Integer[] { 1, null })
810 +    {
811 +        final AtomicInteger a = new AtomicInteger(0);
812 +        final CFException ex = new CFException();
813 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
814 +        if (!createIncomplete) f.completeExceptionally(ex);
815 +        final CompletableFuture<Integer> g = f.exceptionally
816 +            ((Throwable t) -> {
817 +                ExecutionMode.DEFAULT.checkExecutionMode();
818 +                threadAssertSame(t, ex);
819 +                a.getAndIncrement();
820 +                return v1;
821 +            });
822 +        if (createIncomplete) f.completeExceptionally(ex);
823 +
824 +        checkCompletedNormally(g, v1);
825 +        assertEquals(1, a.get());
826 +    }}
827 +
828 +    public void testExceptionally_exceptionalCompletionActionFailed() {
829 +        for (boolean createIncomplete : new boolean[] { true, false })
830 +        for (Integer v1 : new Integer[] { 1, null })
831 +    {
832 +        final AtomicInteger a = new AtomicInteger(0);
833 +        final CFException ex1 = new CFException();
834 +        final CFException ex2 = new CFException();
835 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
836 +        if (!createIncomplete) f.completeExceptionally(ex1);
837 +        final CompletableFuture<Integer> g = f.exceptionally
838 +            ((Throwable t) -> {
839 +                ExecutionMode.DEFAULT.checkExecutionMode();
840 +                threadAssertSame(t, ex1);
841 +                a.getAndIncrement();
842 +                throw ex2;
843 +            });
844 +        if (createIncomplete) f.completeExceptionally(ex1);
845 +
846 +        checkCompletedWithWrappedCFException(g, ex2);
847 +        assertEquals(1, a.get());
848 +    }}
849 +
850 +    /**
851 +     * handle action completes normally with function value on normal
852 +     * completion of source
853 +     */
854 +    public void testHandle_normalCompletion() {
855 +        for (ExecutionMode m : ExecutionMode.values())
856 +        for (boolean createIncomplete : new boolean[] { true, false })
857 +        for (Integer v1 : new Integer[] { 1, null })
858 +    {
859 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
860 +        final AtomicInteger a = new AtomicInteger(0);
861 +        if (!createIncomplete) f.complete(v1);
862 +        final CompletableFuture<Integer> g = m.handle
863 +            (f,
864 +             (Integer x, Throwable t) -> {
865 +                m.checkExecutionMode();
866 +                threadAssertSame(x, v1);
867 +                threadAssertNull(t);
868 +                a.getAndIncrement();
869 +                return inc(v1);
870 +            });
871 +        if (createIncomplete) f.complete(v1);
872 +
873 +        checkCompletedNormally(g, inc(v1));
874 +        checkCompletedNormally(f, v1);
875 +        assertEquals(1, a.get());
876 +    }}
877 +
878 +    /**
879 +     * handle action completes normally with function value on
880 +     * exceptional completion of source
881 +     */
882 +    public void testHandle_exceptionalCompletion() {
883 +        for (ExecutionMode m : ExecutionMode.values())
884 +        for (boolean createIncomplete : new boolean[] { true, false })
885 +        for (Integer v1 : new Integer[] { 1, null })
886 +    {
887 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
888 +        final AtomicInteger a = new AtomicInteger(0);
889 +        final CFException ex = new CFException();
890 +        if (!createIncomplete) f.completeExceptionally(ex);
891 +        final CompletableFuture<Integer> g = m.handle
892 +            (f,
893 +             (Integer x, Throwable t) -> {
894 +                m.checkExecutionMode();
895 +                threadAssertNull(x);
896 +                threadAssertSame(t, ex);
897 +                a.getAndIncrement();
898 +                return v1;
899 +            });
900 +        if (createIncomplete) f.completeExceptionally(ex);
901 +
902 +        checkCompletedNormally(g, v1);
903 +        checkCompletedWithWrappedCFException(f, ex);
904 +        assertEquals(1, a.get());
905 +    }}
906 +
907 +    /**
908 +     * handle action completes normally with function value on
909 +     * cancelled source
910 +     */
911 +    public void testHandle_sourceCancelled() {
912 +        for (ExecutionMode m : ExecutionMode.values())
913 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
914 +        for (boolean createIncomplete : new boolean[] { true, false })
915 +        for (Integer v1 : new Integer[] { 1, null })
916 +    {
917 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
918 +        final AtomicInteger a = new AtomicInteger(0);
919 +        if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
920 +        final CompletableFuture<Integer> g = m.handle
921 +            (f,
922 +             (Integer x, Throwable t) -> {
923 +                m.checkExecutionMode();
924 +                threadAssertNull(x);
925 +                threadAssertTrue(t instanceof CancellationException);
926 +                a.getAndIncrement();
927 +                return v1;
928 +            });
929 +        if (createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
930 +
931 +        checkCompletedNormally(g, v1);
932 +        checkCancelled(f);
933 +        assertEquals(1, a.get());
934 +    }}
935 +
936 +    /**
937 +     * handle result completes exceptionally if action does
938 +     */
939 +    public void testHandle_sourceFailedActionFailed() {
940 +        for (ExecutionMode m : ExecutionMode.values())
941 +        for (boolean createIncomplete : new boolean[] { true, false })
942 +    {
943 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
944 +        final AtomicInteger a = new AtomicInteger(0);
945 +        final CFException ex1 = new CFException();
946 +        final CFException ex2 = new CFException();
947 +        if (!createIncomplete) f.completeExceptionally(ex1);
948 +        final CompletableFuture<Integer> g = m.handle
949 +            (f,
950 +             (Integer x, Throwable t) -> {
951 +                m.checkExecutionMode();
952 +                threadAssertNull(x);
953 +                threadAssertSame(ex1, t);
954 +                a.getAndIncrement();
955 +                throw ex2;
956 +            });
957 +        if (createIncomplete) f.completeExceptionally(ex1);
958 +
959 +        checkCompletedWithWrappedCFException(g, ex2);
960 +        checkCompletedWithWrappedCFException(f, ex1);
961 +        assertEquals(1, a.get());
962 +    }}
963 +
964 +    public void testHandle_sourceCompletedNormallyActionFailed() {
965 +        for (ExecutionMode m : ExecutionMode.values())
966 +        for (boolean createIncomplete : new boolean[] { true, false })
967 +        for (Integer v1 : new Integer[] { 1, null })
968 +    {
969 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
970 +        final AtomicInteger a = new AtomicInteger(0);
971 +        final CFException ex = new CFException();
972 +        if (!createIncomplete) f.complete(v1);
973 +        final CompletableFuture<Integer> g = m.handle
974 +            (f,
975 +             (Integer x, Throwable t) -> {
976 +                m.checkExecutionMode();
977 +                threadAssertSame(x, v1);
978 +                threadAssertNull(t);
979 +                a.getAndIncrement();
980 +                throw ex;
981 +            });
982 +        if (createIncomplete) f.complete(v1);
983 +
984 +        checkCompletedWithWrappedCFException(g, ex);
985 +        checkCompletedNormally(f, v1);
986 +        assertEquals(1, a.get());
987 +    }}
988 +
989 +    /**
990 +     * runAsync completes after running Runnable
991 +     */
992 +    public void testRunAsync_normalCompletion() {
993 +        ExecutionMode[] executionModes = {
994 +            ExecutionMode.ASYNC,
995 +            ExecutionMode.EXECUTOR,
996 +        };
997 +        for (ExecutionMode m : executionModes)
998 +    {
999 +        final Noop r = new Noop(m);
1000 +        final CompletableFuture<Void> f = m.runAsync(r);
1001 +        assertNull(f.join());
1002 +        checkCompletedNormally(f, null);
1003 +        r.assertInvoked();
1004 +    }}
1005 +
1006 +    /**
1007 +     * failing runAsync completes exceptionally after running Runnable
1008 +     */
1009 +    public void testRunAsync_exceptionalCompletion() {
1010 +        ExecutionMode[] executionModes = {
1011 +            ExecutionMode.ASYNC,
1012 +            ExecutionMode.EXECUTOR,
1013 +        };
1014 +        for (ExecutionMode m : executionModes)
1015 +    {
1016 +        final FailingRunnable r = new FailingRunnable(m);
1017 +        final CompletableFuture<Void> f = m.runAsync(r);
1018 +        checkCompletedWithWrappedCFException(f);
1019 +        r.assertInvoked();
1020 +    }}
1021 +
1022 +    /**
1023 +     * supplyAsync completes with result of supplier
1024 +     */
1025 +    public void testSupplyAsync_normalCompletion() {
1026 +        ExecutionMode[] executionModes = {
1027 +            ExecutionMode.ASYNC,
1028 +            ExecutionMode.EXECUTOR,
1029 +        };
1030 +        for (ExecutionMode m : executionModes)
1031 +        for (Integer v1 : new Integer[] { 1, null })
1032 +    {
1033 +        final IntegerSupplier r = new IntegerSupplier(m, v1);
1034 +        final CompletableFuture<Integer> f = m.supplyAsync(r);
1035 +        assertSame(v1, f.join());
1036 +        checkCompletedNormally(f, v1);
1037 +        r.assertInvoked();
1038 +    }}
1039 +
1040 +    /**
1041 +     * Failing supplyAsync completes exceptionally
1042 +     */
1043 +    public void testSupplyAsync_exceptionalCompletion() {
1044 +        ExecutionMode[] executionModes = {
1045 +            ExecutionMode.ASYNC,
1046 +            ExecutionMode.EXECUTOR,
1047 +        };
1048 +        for (ExecutionMode m : executionModes)
1049 +    {
1050 +        FailingSupplier r = new FailingSupplier(m);
1051 +        CompletableFuture<Integer> f = m.supplyAsync(r);
1052 +        checkCompletedWithWrappedCFException(f);
1053 +        r.assertInvoked();
1054 +    }}
1055 +
1056 +    // seq completion methods
1057 +
1058 +    /**
1059 +     * thenRun result completes normally after normal completion of source
1060 +     */
1061 +    public void testThenRun_normalCompletion() {
1062 +        for (ExecutionMode m : ExecutionMode.values())
1063 +        for (boolean createIncomplete : new boolean[] { true, false })
1064 +        for (Integer v1 : new Integer[] { 1, null })
1065 +    {
1066 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1067 +        final Noop r = new Noop(m);
1068 +        if (!createIncomplete) f.complete(v1);
1069 +        final CompletableFuture<Void> g = m.thenRun(f, r);
1070 +        if (createIncomplete) {
1071 +            checkIncomplete(g);
1072 +            f.complete(v1);
1073 +        }
1074 +
1075 +        checkCompletedNormally(g, null);
1076 +        checkCompletedNormally(f, v1);
1077 +        r.assertInvoked();
1078 +    }}
1079 +
1080 +    /**
1081 +     * thenRun result completes exceptionally after exceptional
1082 +     * completion of source
1083 +     */
1084 +    public void testThenRun_exceptionalCompletion() {
1085 +        for (ExecutionMode m : ExecutionMode.values())
1086 +        for (boolean createIncomplete : new boolean[] { true, false })
1087 +    {
1088 +        final CFException ex = new CFException();
1089 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1090 +        final Noop r = new Noop(m);
1091 +        if (!createIncomplete) f.completeExceptionally(ex);
1092 +        final CompletableFuture<Void> g = m.thenRun(f, r);
1093 +        if (createIncomplete) {
1094 +            checkIncomplete(g);
1095 +            f.completeExceptionally(ex);
1096 +        }
1097 +
1098 +        checkCompletedWithWrappedCFException(g, ex);
1099 +        checkCompletedWithWrappedCFException(f, ex);
1100 +        r.assertNotInvoked();
1101 +    }}
1102 +
1103 +    /**
1104 +     * thenRun result completes exceptionally if source cancelled
1105 +     */
1106 +    public void testThenRun_sourceCancelled() {
1107 +        for (ExecutionMode m : ExecutionMode.values())
1108 +        for (boolean createIncomplete : new boolean[] { true, false })
1109 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1110 +    {
1111 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1112 +        final Noop r = new Noop(m);
1113 +        if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
1114 +        final CompletableFuture<Void> g = m.thenRun(f, r);
1115 +        if (createIncomplete) {
1116 +            checkIncomplete(g);
1117 +            assertTrue(f.cancel(mayInterruptIfRunning));
1118 +        }
1119 +
1120 +        checkCompletedWithWrappedCancellationException(g);
1121 +        checkCancelled(f);
1122 +        r.assertNotInvoked();
1123 +    }}
1124 +
1125 +    /**
1126 +     * thenRun result completes exceptionally if action does
1127 +     */
1128 +    public void testThenRun_actionFailed() {
1129 +        for (ExecutionMode m : ExecutionMode.values())
1130 +        for (boolean createIncomplete : new boolean[] { true, false })
1131 +        for (Integer v1 : new Integer[] { 1, null })
1132 +    {
1133 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1134 +        final FailingRunnable r = new FailingRunnable(m);
1135 +        if (!createIncomplete) f.complete(v1);
1136 +        final CompletableFuture<Void> g = m.thenRun(f, r);
1137 +        if (createIncomplete) {
1138 +            checkIncomplete(g);
1139 +            f.complete(v1);
1140 +        }
1141 +
1142 +        checkCompletedWithWrappedCFException(g);
1143 +        checkCompletedNormally(f, v1);
1144 +    }}
1145 +
1146 +    /**
1147 +     * thenApply result completes normally after normal completion of source
1148 +     */
1149 +    public void testThenApply_normalCompletion() {
1150 +        for (ExecutionMode m : ExecutionMode.values())
1151 +        for (boolean createIncomplete : new boolean[] { true, false })
1152 +        for (Integer v1 : new Integer[] { 1, null })
1153 +    {
1154 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1155 +        final IncFunction r = new IncFunction(m);
1156 +        if (!createIncomplete) f.complete(v1);
1157 +        final CompletableFuture<Integer> g = m.thenApply(f, r);
1158 +        if (createIncomplete) {
1159 +            checkIncomplete(g);
1160 +            f.complete(v1);
1161 +        }
1162 +
1163 +        checkCompletedNormally(g, inc(v1));
1164 +        checkCompletedNormally(f, v1);
1165 +        r.assertInvoked();
1166 +    }}
1167 +
1168 +    /**
1169 +     * thenApply result completes exceptionally after exceptional
1170 +     * completion of source
1171 +     */
1172 +    public void testThenApply_exceptionalCompletion() {
1173 +        for (ExecutionMode m : ExecutionMode.values())
1174 +        for (boolean createIncomplete : new boolean[] { true, false })
1175 +    {
1176 +        final CFException ex = new CFException();
1177 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1178 +        final IncFunction r = new IncFunction(m);
1179 +        if (!createIncomplete) f.completeExceptionally(ex);
1180 +        final CompletableFuture<Integer> g = m.thenApply(f, r);
1181 +        if (createIncomplete) {
1182 +            checkIncomplete(g);
1183 +            f.completeExceptionally(ex);
1184 +        }
1185 +
1186 +        checkCompletedWithWrappedCFException(g, ex);
1187 +        checkCompletedWithWrappedCFException(f, ex);
1188 +        r.assertNotInvoked();
1189 +    }}
1190 +
1191 +    /**
1192 +     * thenApply result completes exceptionally if source cancelled
1193 +     */
1194 +    public void testThenApply_sourceCancelled() {
1195 +        for (ExecutionMode m : ExecutionMode.values())
1196 +        for (boolean createIncomplete : new boolean[] { true, false })
1197 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1198 +    {
1199 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1200 +        final IncFunction r = new IncFunction(m);
1201 +        if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
1202 +        final CompletableFuture<Integer> g = m.thenApply(f, r);
1203 +        if (createIncomplete) {
1204 +            checkIncomplete(g);
1205 +            assertTrue(f.cancel(mayInterruptIfRunning));
1206 +        }
1207 +
1208 +        checkCompletedWithWrappedCancellationException(g);
1209 +        checkCancelled(f);
1210 +        r.assertNotInvoked();
1211 +    }}
1212 +
1213 +    /**
1214 +     * thenApply result completes exceptionally if action does
1215 +     */
1216 +    public void testThenApply_actionFailed() {
1217 +        for (ExecutionMode m : ExecutionMode.values())
1218 +        for (boolean createIncomplete : new boolean[] { true, false })
1219 +        for (Integer v1 : new Integer[] { 1, null })
1220 +    {
1221 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1222 +        final FailingFunction r = new FailingFunction(m);
1223 +        if (!createIncomplete) f.complete(v1);
1224 +        final CompletableFuture<Integer> g = m.thenApply(f, r);
1225 +        if (createIncomplete) {
1226 +            checkIncomplete(g);
1227 +            f.complete(v1);
1228 +        }
1229 +
1230 +        checkCompletedWithWrappedCFException(g);
1231 +        checkCompletedNormally(f, v1);
1232 +    }}
1233 +
1234 +    /**
1235 +     * thenAccept result completes normally after normal completion of source
1236 +     */
1237 +    public void testThenAccept_normalCompletion() {
1238 +        for (ExecutionMode m : ExecutionMode.values())
1239 +        for (boolean createIncomplete : new boolean[] { true, false })
1240 +        for (Integer v1 : new Integer[] { 1, null })
1241 +    {
1242 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1243 +        final IncAction r = new IncAction(m);
1244 +        if (!createIncomplete) f.complete(v1);
1245 +        final CompletableFuture<Void> g = m.thenAccept(f, r);
1246 +        if (createIncomplete) {
1247 +            checkIncomplete(g);
1248 +            f.complete(v1);
1249 +        }
1250 +
1251 +        checkCompletedNormally(g, null);
1252 +        checkCompletedNormally(f, v1);
1253 +        r.assertInvoked();
1254 +        r.assertValue(inc(v1));
1255 +    }}
1256 +
1257 +    /**
1258 +     * thenAccept result completes exceptionally after exceptional
1259 +     * completion of source
1260 +     */
1261 +    public void testThenAccept_exceptionalCompletion() {
1262 +        for (ExecutionMode m : ExecutionMode.values())
1263 +        for (boolean createIncomplete : new boolean[] { true, false })
1264 +    {
1265 +        final CFException ex = new CFException();
1266 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1267 +        final IncAction r = new IncAction(m);
1268 +        if (!createIncomplete) f.completeExceptionally(ex);
1269 +        final CompletableFuture<Void> g = m.thenAccept(f, r);
1270 +        if (createIncomplete) {
1271 +            checkIncomplete(g);
1272 +            f.completeExceptionally(ex);
1273 +        }
1274 +
1275 +        checkCompletedWithWrappedCFException(g, ex);
1276 +        checkCompletedWithWrappedCFException(f, ex);
1277 +        r.assertNotInvoked();
1278 +    }}
1279 +
1280 +    /**
1281 +     * thenAccept result completes exceptionally if source cancelled
1282 +     */
1283 +    public void testThenAccept_sourceCancelled() {
1284 +        for (ExecutionMode m : ExecutionMode.values())
1285 +        for (boolean createIncomplete : new boolean[] { true, false })
1286 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1287 +    {
1288 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1289 +        final IncAction r = new IncAction(m);
1290 +        if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
1291 +        final CompletableFuture<Void> g = m.thenAccept(f, r);
1292 +        if (createIncomplete) {
1293 +            checkIncomplete(g);
1294 +            assertTrue(f.cancel(mayInterruptIfRunning));
1295 +        }
1296 +
1297 +        checkCompletedWithWrappedCancellationException(g);
1298 +        checkCancelled(f);
1299 +        r.assertNotInvoked();
1300 +    }}
1301 +
1302 +    /**
1303 +     * thenAccept result completes exceptionally if action does
1304 +     */
1305 +    public void testThenAccept_actionFailed() {
1306 +        for (ExecutionMode m : ExecutionMode.values())
1307 +        for (boolean createIncomplete : new boolean[] { true, false })
1308 +        for (Integer v1 : new Integer[] { 1, null })
1309 +    {
1310 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1311 +        final FailingConsumer r = new FailingConsumer(m);
1312 +        if (!createIncomplete) f.complete(v1);
1313 +        final CompletableFuture<Void> g = m.thenAccept(f, r);
1314 +        if (createIncomplete) {
1315 +            checkIncomplete(g);
1316 +            f.complete(v1);
1317 +        }
1318 +
1319 +        checkCompletedWithWrappedCFException(g);
1320 +        checkCompletedNormally(f, v1);
1321 +    }}
1322 +
1323 +    /**
1324 +     * thenCombine result completes normally after normal completion
1325 +     * of sources
1326 +     */
1327 +    public void testThenCombine_normalCompletion() {
1328 +        for (ExecutionMode m : ExecutionMode.values())
1329 +        for (boolean createIncomplete : new boolean[] { true, false })
1330 +        for (boolean fFirst : new boolean[] { true, false })
1331 +        for (Integer v1 : new Integer[] { 1, null })
1332 +        for (Integer v2 : new Integer[] { 2, null })
1333 +    {
1334 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1335 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1336 +        final SubtractFunction r = new SubtractFunction(m);
1337 +
1338 +        if (fFirst) f.complete(v1); else g.complete(v2);
1339 +        if (!createIncomplete)
1340 +            if (!fFirst) f.complete(v1); else g.complete(v2);
1341 +        final CompletableFuture<Integer> h = m.thenCombine(f, g, r);
1342 +        if (createIncomplete) {
1343 +            checkIncomplete(h);
1344 +            r.assertNotInvoked();
1345 +            if (!fFirst) f.complete(v1); else g.complete(v2);
1346 +        }
1347 +
1348 +        checkCompletedNormally(h, subtract(v1, v2));
1349 +        checkCompletedNormally(f, v1);
1350 +        checkCompletedNormally(g, v2);
1351 +        r.assertInvoked();
1352 +    }}
1353 +
1354 +    /**
1355 +     * thenCombine result completes exceptionally after exceptional
1356 +     * completion of either source
1357 +     */
1358 +    public void testThenCombine_exceptionalCompletion() {
1359 +        for (ExecutionMode m : ExecutionMode.values())
1360 +        for (boolean createIncomplete : new boolean[] { true, false })
1361 +        for (boolean fFirst : new boolean[] { true, false })
1362 +        for (Integer v1 : new Integer[] { 1, null })
1363 +    {
1364 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1365 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1366 +        final CFException ex = new CFException();
1367 +        final SubtractFunction r = new SubtractFunction(m);
1368 +
1369 +        (fFirst ? f : g).complete(v1);
1370 +        if (!createIncomplete)
1371 +            (!fFirst ? f : g).completeExceptionally(ex);
1372 +        final CompletableFuture<Integer> h = m.thenCombine(f, g, r);
1373 +        if (createIncomplete) {
1374 +            checkIncomplete(h);
1375 +            (!fFirst ? f : g).completeExceptionally(ex);
1376 +        }
1377 +
1378 +        checkCompletedWithWrappedCFException(h, ex);
1379 +        r.assertNotInvoked();
1380 +        checkCompletedNormally(fFirst ? f : g, v1);
1381 +        checkCompletedWithWrappedCFException(!fFirst ? f : g, ex);
1382 +    }}
1383 +
1384 +    /**
1385 +     * thenCombine result completes exceptionally if either source cancelled
1386 +     */
1387 +    public void testThenCombine_sourceCancelled() {
1388 +        for (ExecutionMode m : ExecutionMode.values())
1389 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1390 +        for (boolean createIncomplete : new boolean[] { true, false })
1391 +        for (boolean fFirst : new boolean[] { true, false })
1392 +        for (Integer v1 : new Integer[] { 1, null })
1393 +    {
1394 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1395 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1396 +        final SubtractFunction r = new SubtractFunction(m);
1397 +
1398 +        (fFirst ? f : g).complete(v1);
1399 +        if (!createIncomplete)
1400 +            assertTrue((!fFirst ? f : g).cancel(mayInterruptIfRunning));
1401 +        final CompletableFuture<Integer> h = m.thenCombine(f, g, r);
1402 +        if (createIncomplete) {
1403 +            checkIncomplete(h);
1404 +            assertTrue((!fFirst ? f : g).cancel(mayInterruptIfRunning));
1405 +        }
1406 +
1407 +        checkCompletedWithWrappedCancellationException(h);
1408 +        checkCancelled(!fFirst ? f : g);
1409 +        r.assertNotInvoked();
1410 +        checkCompletedNormally(fFirst ? f : g, v1);
1411 +    }}
1412 +
1413 +    /**
1414 +     * thenCombine result completes exceptionally if action does
1415 +     */
1416 +    public void testThenCombine_actionFailed() {
1417 +        for (ExecutionMode m : ExecutionMode.values())
1418 +        for (boolean fFirst : new boolean[] { true, false })
1419 +        for (Integer v1 : new Integer[] { 1, null })
1420 +        for (Integer v2 : new Integer[] { 2, null })
1421 +    {
1422 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1423 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1424 +        final FailingBiFunction r = new FailingBiFunction(m);
1425 +        final CompletableFuture<Integer> h = m.thenCombine(f, g, r);
1426 +
1427 +        if (fFirst) {
1428 +            f.complete(v1);
1429 +            g.complete(v2);
1430 +        } else {
1431 +            g.complete(v2);
1432 +            f.complete(v1);
1433 +        }
1434 +
1435 +        checkCompletedWithWrappedCFException(h);
1436 +        checkCompletedNormally(f, v1);
1437 +        checkCompletedNormally(g, v2);
1438 +    }}
1439 +
1440 +    /**
1441 +     * thenAcceptBoth result completes normally after normal
1442 +     * completion of sources
1443 +     */
1444 +    public void testThenAcceptBoth_normalCompletion() {
1445 +        for (ExecutionMode m : ExecutionMode.values())
1446 +        for (boolean createIncomplete : new boolean[] { true, false })
1447 +        for (boolean fFirst : new boolean[] { true, false })
1448 +        for (Integer v1 : new Integer[] { 1, null })
1449 +        for (Integer v2 : new Integer[] { 2, null })
1450 +    {
1451 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1452 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1453 +        final SubtractAction r = new SubtractAction(m);
1454 +
1455 +        if (fFirst) f.complete(v1); else g.complete(v2);
1456 +        if (!createIncomplete)
1457 +            if (!fFirst) f.complete(v1); else g.complete(v2);
1458 +        final CompletableFuture<Void> h = m.thenAcceptBoth(f, g, r);
1459 +        if (createIncomplete) {
1460 +            checkIncomplete(h);
1461 +            r.assertNotInvoked();
1462 +            if (!fFirst) f.complete(v1); else g.complete(v2);
1463 +        }
1464 +
1465 +        checkCompletedNormally(h, null);
1466 +        r.assertValue(subtract(v1, v2));
1467 +        checkCompletedNormally(f, v1);
1468 +        checkCompletedNormally(g, v2);
1469 +    }}
1470 +
1471 +    /**
1472 +     * thenAcceptBoth result completes exceptionally after exceptional
1473 +     * completion of either source
1474 +     */
1475 +    public void testThenAcceptBoth_exceptionalCompletion() {
1476 +        for (ExecutionMode m : ExecutionMode.values())
1477 +        for (boolean createIncomplete : new boolean[] { true, false })
1478 +        for (boolean fFirst : new boolean[] { true, false })
1479 +        for (Integer v1 : new Integer[] { 1, null })
1480 +    {
1481 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1482 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1483 +        final CFException ex = new CFException();
1484 +        final SubtractAction r = new SubtractAction(m);
1485 +
1486 +        (fFirst ? f : g).complete(v1);
1487 +        if (!createIncomplete)
1488 +            (!fFirst ? f : g).completeExceptionally(ex);
1489 +        final CompletableFuture<Void> h = m.thenAcceptBoth(f, g, r);
1490 +        if (createIncomplete) {
1491 +            checkIncomplete(h);
1492 +            (!fFirst ? f : g).completeExceptionally(ex);
1493 +        }
1494 +
1495 +        checkCompletedWithWrappedCFException(h, ex);
1496 +        r.assertNotInvoked();
1497 +        checkCompletedNormally(fFirst ? f : g, v1);
1498 +        checkCompletedWithWrappedCFException(!fFirst ? f : g, ex);
1499 +    }}
1500 +
1501 +    /**
1502 +     * thenAcceptBoth result completes exceptionally if either source cancelled
1503 +     */
1504 +    public void testThenAcceptBoth_sourceCancelled() {
1505 +        for (ExecutionMode m : ExecutionMode.values())
1506 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1507 +        for (boolean createIncomplete : new boolean[] { true, false })
1508 +        for (boolean fFirst : new boolean[] { true, false })
1509 +        for (Integer v1 : new Integer[] { 1, null })
1510 +    {
1511 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1512 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1513 +        final SubtractAction r = new SubtractAction(m);
1514 +
1515 +        (fFirst ? f : g).complete(v1);
1516 +        if (!createIncomplete)
1517 +            assertTrue((!fFirst ? f : g).cancel(mayInterruptIfRunning));
1518 +        final CompletableFuture<Void> h = m.thenAcceptBoth(f, g, r);
1519 +        if (createIncomplete) {
1520 +            checkIncomplete(h);
1521 +            assertTrue((!fFirst ? f : g).cancel(mayInterruptIfRunning));
1522 +        }
1523 +
1524 +        checkCompletedWithWrappedCancellationException(h);
1525 +        checkCancelled(!fFirst ? f : g);
1526 +        r.assertNotInvoked();
1527 +        checkCompletedNormally(fFirst ? f : g, v1);
1528 +    }}
1529 +
1530 +    /**
1531 +     * thenAcceptBoth result completes exceptionally if action does
1532 +     */
1533 +    public void testThenAcceptBoth_actionFailed() {
1534 +        for (ExecutionMode m : ExecutionMode.values())
1535 +        for (boolean fFirst : new boolean[] { true, false })
1536 +        for (Integer v1 : new Integer[] { 1, null })
1537 +        for (Integer v2 : new Integer[] { 2, null })
1538 +    {
1539 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1540 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1541 +        final FailingBiConsumer r = new FailingBiConsumer(m);
1542 +        final CompletableFuture<Void> h = m.thenAcceptBoth(f, g, r);
1543 +
1544 +        if (fFirst) {
1545 +            f.complete(v1);
1546 +            g.complete(v2);
1547 +        } else {
1548 +            g.complete(v2);
1549 +            f.complete(v1);
1550 +        }
1551 +
1552 +        checkCompletedWithWrappedCFException(h);
1553 +        checkCompletedNormally(f, v1);
1554 +        checkCompletedNormally(g, v2);
1555 +    }}
1556 +
1557 +    /**
1558 +     * runAfterBoth result completes normally after normal
1559 +     * completion of sources
1560 +     */
1561 +    public void testRunAfterBoth_normalCompletion() {
1562 +        for (ExecutionMode m : ExecutionMode.values())
1563 +        for (boolean createIncomplete : new boolean[] { true, false })
1564 +        for (boolean fFirst : new boolean[] { true, false })
1565 +        for (Integer v1 : new Integer[] { 1, null })
1566 +        for (Integer v2 : new Integer[] { 2, null })
1567 +    {
1568 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1569 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1570 +        final Noop r = new Noop(m);
1571 +
1572 +        if (fFirst) f.complete(v1); else g.complete(v2);
1573 +        if (!createIncomplete)
1574 +            if (!fFirst) f.complete(v1); else g.complete(v2);
1575 +        final CompletableFuture<Void> h = m.runAfterBoth(f, g, r);
1576 +        if (createIncomplete) {
1577 +            checkIncomplete(h);
1578 +            r.assertNotInvoked();
1579 +            if (!fFirst) f.complete(v1); else g.complete(v2);
1580 +        }
1581 +
1582 +        checkCompletedNormally(h, null);
1583 +        r.assertInvoked();
1584 +        checkCompletedNormally(f, v1);
1585 +        checkCompletedNormally(g, v2);
1586 +    }}
1587 +
1588 +    /**
1589 +     * runAfterBoth result completes exceptionally after exceptional
1590 +     * completion of either source
1591 +     */
1592 +    public void testRunAfterBoth_exceptionalCompletion() {
1593 +        for (ExecutionMode m : ExecutionMode.values())
1594 +        for (boolean createIncomplete : new boolean[] { true, false })
1595 +        for (boolean fFirst : new boolean[] { true, false })
1596 +        for (Integer v1 : new Integer[] { 1, null })
1597 +    {
1598 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1599 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1600 +        final CFException ex = new CFException();
1601 +        final Noop r = new Noop(m);
1602 +
1603 +        (fFirst ? f : g).complete(v1);
1604 +        if (!createIncomplete)
1605 +            (!fFirst ? f : g).completeExceptionally(ex);
1606 +        final CompletableFuture<Void> h = m.runAfterBoth(f, g, r);
1607 +        if (createIncomplete) {
1608 +            checkIncomplete(h);
1609 +            (!fFirst ? f : g).completeExceptionally(ex);
1610 +        }
1611 +
1612 +        checkCompletedWithWrappedCFException(h, ex);
1613 +        r.assertNotInvoked();
1614 +        checkCompletedNormally(fFirst ? f : g, v1);
1615 +        checkCompletedWithWrappedCFException(!fFirst ? f : g, ex);
1616 +    }}
1617 +
1618 +    /**
1619 +     * runAfterBoth result completes exceptionally if either source cancelled
1620 +     */
1621 +    public void testRunAfterBoth_sourceCancelled() {
1622 +        for (ExecutionMode m : ExecutionMode.values())
1623 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1624 +        for (boolean createIncomplete : new boolean[] { true, false })
1625 +        for (boolean fFirst : new boolean[] { true, false })
1626 +        for (Integer v1 : new Integer[] { 1, null })
1627 +    {
1628 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1629 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1630 +        final Noop r = new Noop(m);
1631 +
1632 +
1633 +        (fFirst ? f : g).complete(v1);
1634 +        if (!createIncomplete)
1635 +            assertTrue((!fFirst ? f : g).cancel(mayInterruptIfRunning));
1636 +        final CompletableFuture<Void> h = m.runAfterBoth(f, g, r);
1637 +        if (createIncomplete) {
1638 +            checkIncomplete(h);
1639 +            assertTrue((!fFirst ? f : g).cancel(mayInterruptIfRunning));
1640 +        }
1641 +
1642 +        checkCompletedWithWrappedCancellationException(h);
1643 +        checkCancelled(!fFirst ? f : g);
1644 +        r.assertNotInvoked();
1645 +        checkCompletedNormally(fFirst ? f : g, v1);
1646 +    }}
1647 +
1648 +    /**
1649 +     * runAfterBoth result completes exceptionally if action does
1650 +     */
1651 +    public void testRunAfterBoth_actionFailed() {
1652 +        for (ExecutionMode m : ExecutionMode.values())
1653 +        for (boolean fFirst : new boolean[] { true, false })
1654 +        for (Integer v1 : new Integer[] { 1, null })
1655 +        for (Integer v2 : new Integer[] { 2, null })
1656 +    {
1657 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1658 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1659 +        final FailingRunnable r1 = new FailingRunnable(m);
1660 +        final FailingRunnable r2 = new FailingRunnable(m);
1661 +
1662 +        CompletableFuture<Void> h1 = m.runAfterBoth(f, g, r1);
1663 +        if (fFirst) {
1664 +            f.complete(v1);
1665 +            g.complete(v2);
1666 +        } else {
1667 +            g.complete(v2);
1668 +            f.complete(v1);
1669 +        }
1670 +        CompletableFuture<Void> h2 = m.runAfterBoth(f, g, r2);
1671 +
1672 +        checkCompletedWithWrappedCFException(h1);
1673 +        checkCompletedWithWrappedCFException(h2);
1674 +        checkCompletedNormally(f, v1);
1675 +        checkCompletedNormally(g, v2);
1676 +    }}
1677 +
1678 +    /**
1679 +     * applyToEither result completes normally after normal completion
1680 +     * of either source
1681 +     */
1682 +    public void testApplyToEither_normalCompletion() {
1683 +        for (ExecutionMode m : ExecutionMode.values())
1684 +        for (Integer v1 : new Integer[] { 1, null })
1685 +        for (Integer v2 : new Integer[] { 2, null })
1686 +    {
1687 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1688 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1689 +        final IncFunction[] rs = new IncFunction[6];
1690 +        for (int i = 0; i < rs.length; i++) rs[i] = new IncFunction(m);
1691 +
1692 +        final CompletableFuture<Integer> h0 = m.applyToEither(f, g, rs[0]);
1693 +        final CompletableFuture<Integer> h1 = m.applyToEither(g, f, rs[1]);
1694 +        checkIncomplete(h0);
1695 +        checkIncomplete(h1);
1696 +        rs[0].assertNotInvoked();
1697 +        rs[1].assertNotInvoked();
1698 +        f.complete(v1);
1699 +        checkCompletedNormally(h0, inc(v1));
1700 +        checkCompletedNormally(h1, inc(v1));
1701 +        final CompletableFuture<Integer> h2 = m.applyToEither(f, g, rs[2]);
1702 +        final CompletableFuture<Integer> h3 = m.applyToEither(g, f, rs[3]);
1703 +        checkCompletedNormally(h2, inc(v1));
1704 +        checkCompletedNormally(h3, inc(v1));
1705 +        g.complete(v2);
1706 +
1707 +        // unspecified behavior - both source completions available
1708 +        final CompletableFuture<Integer> h4 = m.applyToEither(f, g, rs[4]);
1709 +        final CompletableFuture<Integer> h5 = m.applyToEither(g, f, rs[5]);
1710 +        rs[4].assertValue(h4.join());
1711 +        rs[5].assertValue(h5.join());
1712 +        assertTrue(Objects.equals(inc(v1), h4.join()) ||
1713 +                   Objects.equals(inc(v2), h4.join()));
1714 +        assertTrue(Objects.equals(inc(v1), h5.join()) ||
1715 +                   Objects.equals(inc(v2), h5.join()));
1716 +
1717 +        checkCompletedNormally(f, v1);
1718 +        checkCompletedNormally(g, v2);
1719 +        checkCompletedNormally(h0, inc(v1));
1720 +        checkCompletedNormally(h1, inc(v1));
1721 +        checkCompletedNormally(h2, inc(v1));
1722 +        checkCompletedNormally(h3, inc(v1));
1723 +        for (int i = 0; i < 4; i++) rs[i].assertValue(inc(v1));
1724 +    }}
1725 +
1726 +    /**
1727 +     * applyToEither result completes exceptionally after exceptional
1728 +     * completion of either source
1729 +     */
1730 +    public void testApplyToEither_exceptionalCompletion() {
1731 +        for (ExecutionMode m : ExecutionMode.values())
1732 +        for (Integer v1 : new Integer[] { 1, null })
1733 +    {
1734 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1735 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1736 +        final CFException ex = new CFException();
1737 +        final IncFunction[] rs = new IncFunction[6];
1738 +        for (int i = 0; i < rs.length; i++) rs[i] = new IncFunction(m);
1739 +
1740 +        final CompletableFuture<Integer> h0 = m.applyToEither(f, g, rs[0]);
1741 +        final CompletableFuture<Integer> h1 = m.applyToEither(g, f, rs[1]);
1742 +        checkIncomplete(h0);
1743 +        checkIncomplete(h1);
1744 +        rs[0].assertNotInvoked();
1745 +        rs[1].assertNotInvoked();
1746 +        f.completeExceptionally(ex);
1747 +        checkCompletedWithWrappedCFException(h0, ex);
1748 +        checkCompletedWithWrappedCFException(h1, ex);
1749 +        final CompletableFuture<Integer> h2 = m.applyToEither(f, g, rs[2]);
1750 +        final CompletableFuture<Integer> h3 = m.applyToEither(g, f, rs[3]);
1751 +        checkCompletedWithWrappedCFException(h2, ex);
1752 +        checkCompletedWithWrappedCFException(h3, ex);
1753 +        g.complete(v1);
1754 +
1755 +        // unspecified behavior - both source completions available
1756 +        final CompletableFuture<Integer> h4 = m.applyToEither(f, g, rs[4]);
1757 +        final CompletableFuture<Integer> h5 = m.applyToEither(g, f, rs[5]);
1758 +        try {
1759 +            assertEquals(inc(v1), h4.join());
1760 +            rs[4].assertInvoked();
1761 +        } catch (CompletionException ok) {
1762 +            checkCompletedWithWrappedCFException(h4, ex);
1763 +            rs[4].assertNotInvoked();
1764 +        }
1765 +        try {
1766 +            assertEquals(inc(v1), h5.join());
1767 +            rs[5].assertInvoked();
1768 +        } catch (CompletionException ok) {
1769 +            checkCompletedWithWrappedCFException(h5, ex);
1770 +            rs[5].assertNotInvoked();
1771 +        }
1772 +
1773 +        checkCompletedWithWrappedCFException(f, ex);
1774 +        checkCompletedNormally(g, v1);
1775 +        checkCompletedWithWrappedCFException(h0, ex);
1776 +        checkCompletedWithWrappedCFException(h1, ex);
1777 +        checkCompletedWithWrappedCFException(h2, ex);
1778 +        checkCompletedWithWrappedCFException(h3, ex);
1779 +        checkCompletedWithWrappedCFException(h4, ex);
1780 +        for (int i = 0; i < 4; i++) rs[i].assertNotInvoked();
1781 +    }}
1782 +
1783 +    /**
1784 +     * applyToEither result completes exceptionally if either source cancelled
1785 +     */
1786 +    public void testApplyToEither_sourceCancelled() {
1787 +        for (ExecutionMode m : ExecutionMode.values())
1788 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1789 +        for (Integer v1 : new Integer[] { 1, null })
1790 +    {
1791 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1792 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1793 +        final IncFunction[] rs = new IncFunction[6];
1794 +        for (int i = 0; i < rs.length; i++) rs[i] = new IncFunction(m);
1795 +
1796 +        final CompletableFuture<Integer> h0 = m.applyToEither(f, g, rs[0]);
1797 +        final CompletableFuture<Integer> h1 = m.applyToEither(g, f, rs[1]);
1798 +        checkIncomplete(h0);
1799 +        checkIncomplete(h1);
1800 +        rs[0].assertNotInvoked();
1801 +        rs[1].assertNotInvoked();
1802 +        f.cancel(mayInterruptIfRunning);
1803 +        checkCompletedWithWrappedCancellationException(h0);
1804 +        checkCompletedWithWrappedCancellationException(h1);
1805 +        final CompletableFuture<Integer> h2 = m.applyToEither(f, g, rs[2]);
1806 +        final CompletableFuture<Integer> h3 = m.applyToEither(g, f, rs[3]);
1807 +        checkCompletedWithWrappedCancellationException(h2);
1808 +        checkCompletedWithWrappedCancellationException(h3);
1809 +        g.complete(v1);
1810 +
1811 +        // unspecified behavior - both source completions available
1812 +        final CompletableFuture<Integer> h4 = m.applyToEither(f, g, rs[4]);
1813 +        final CompletableFuture<Integer> h5 = m.applyToEither(g, f, rs[5]);
1814 +        try {
1815 +            assertEquals(inc(v1), h4.join());
1816 +            rs[4].assertInvoked();
1817 +        } catch (CompletionException ok) {
1818 +            checkCompletedWithWrappedCancellationException(h4);
1819 +            rs[4].assertNotInvoked();
1820 +        }
1821 +        try {
1822 +            assertEquals(inc(v1), h5.join());
1823 +            rs[5].assertInvoked();
1824 +        } catch (CompletionException ok) {
1825 +            checkCompletedWithWrappedCancellationException(h5);
1826 +            rs[5].assertNotInvoked();
1827 +        }
1828 +
1829 +        checkCancelled(f);
1830 +        checkCompletedNormally(g, v1);
1831 +        checkCompletedWithWrappedCancellationException(h0);
1832 +        checkCompletedWithWrappedCancellationException(h1);
1833 +        checkCompletedWithWrappedCancellationException(h2);
1834 +        checkCompletedWithWrappedCancellationException(h3);
1835 +        for (int i = 0; i < 4; i++) rs[i].assertNotInvoked();
1836 +    }}
1837 +
1838 +    /**
1839 +     * applyToEither result completes exceptionally if action does
1840 +     */
1841 +    public void testApplyToEither_actionFailed() {
1842 +        for (ExecutionMode m : ExecutionMode.values())
1843 +        for (Integer v1 : new Integer[] { 1, null })
1844 +        for (Integer v2 : new Integer[] { 2, null })
1845 +    {
1846 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1847 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1848 +        final FailingFunction[] rs = new FailingFunction[6];
1849 +        for (int i = 0; i < rs.length; i++) rs[i] = new FailingFunction(m);
1850 +
1851 +        final CompletableFuture<Integer> h0 = m.applyToEither(f, g, rs[0]);
1852 +        final CompletableFuture<Integer> h1 = m.applyToEither(g, f, rs[1]);
1853 +        f.complete(v1);
1854 +        final CompletableFuture<Integer> h2 = m.applyToEither(f, g, rs[2]);
1855 +        final CompletableFuture<Integer> h3 = m.applyToEither(g, f, rs[3]);
1856 +        g.complete(v2);
1857 +        final CompletableFuture<Integer> h4 = m.applyToEither(f, g, rs[4]);
1858 +        final CompletableFuture<Integer> h5 = m.applyToEither(g, f, rs[5]);
1859 +        
1860 +        checkCompletedNormally(f, v1);
1861 +        checkCompletedNormally(g, v2);
1862 +        checkCompletedWithWrappedCFException(h0);
1863 +        checkCompletedWithWrappedCFException(h1);
1864 +        checkCompletedWithWrappedCFException(h2);
1865 +        checkCompletedWithWrappedCFException(h3);
1866 +        checkCompletedWithWrappedCFException(h4);
1867 +        checkCompletedWithWrappedCFException(h5);
1868 +        for (int i = 0; i < rs.length; i++) rs[i].assertInvoked();
1869 +    }}
1870 +
1871 +    /**
1872 +     * acceptEither result completes normally after normal completion
1873 +     * of either source
1874 +     */
1875 +    public void testAcceptEither_normalCompletion1() {
1876 +        for (ExecutionMode m : ExecutionMode.values())
1877 +        for (Integer v1 : new Integer[] { 1, null })
1878 +        for (Integer v2 : new Integer[] { 2, null })
1879 +    {
1880 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1881 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1882 +        final IncAction r = new IncAction(m);
1883 +        final CompletableFuture<Void> h = m.acceptEither(f, g, r);
1884 +
1885 +        f.complete(v1);
1886 +        checkCompletedNormally(h, null);
1887 +        assertEquals(inc(v1), r.value);
1888 +        g.complete(v2);
1889 +
1890 +        checkCompletedNormally(f, v1);
1891 +        checkCompletedNormally(g, v2);
1892 +        checkCompletedNormally(h, null);
1893 +    }}
1894 +
1895 +    public void testAcceptEither_normalCompletion2() {
1896 +        for (ExecutionMode m : ExecutionMode.values())
1897 +        for (Integer v1 : new Integer[] { 1, null })
1898 +        for (Integer v2 : new Integer[] { 2, null })
1899 +    {
1900 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1901 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1902 +        final IncAction r = new IncAction(m);
1903 +        final CompletableFuture<Void> h = m.acceptEither(f, g, r);
1904 +
1905 +        g.complete(v2);
1906 +        checkCompletedNormally(h, null);
1907 +        assertEquals(inc(v2), r.value);
1908 +        f.complete(v1);
1909 +
1910 +        checkCompletedNormally(f, v1);
1911 +        checkCompletedNormally(g, v2);
1912 +        checkCompletedNormally(h, null);
1913 +    }}
1914 +
1915 +    public void testAcceptEither_normalCompletion3() {
1916 +        for (ExecutionMode m : ExecutionMode.values())
1917 +        for (Integer v1 : new Integer[] { 1, null })
1918 +        for (Integer v2 : new Integer[] { 2, null })
1919 +    {
1920 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1921 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1922 +        final IncAction r = new IncAction(m);
1923 +
1924 +        f.complete(v1);
1925 +        g.complete(v2);
1926 +        final CompletableFuture<Void> h = m.acceptEither(f, g, r);
1927 +
1928 +        checkCompletedNormally(h, null);
1929 +        checkCompletedNormally(f, v1);
1930 +        checkCompletedNormally(g, v2);
1931 +
1932 +        // unspecified behavior
1933 +        assertTrue(Objects.equals(r.value, inc(v1)) ||
1934 +                   Objects.equals(r.value, inc(v2)));
1935 +    }}
1936 +
1937 +    /**
1938 +     * acceptEither result completes exceptionally after exceptional
1939 +     * completion of either source
1940 +     */
1941 +    public void testAcceptEither_exceptionalCompletion1() {
1942 +        for (ExecutionMode m : ExecutionMode.values())
1943 +        for (Integer v1 : new Integer[] { 1, null })
1944 +    {
1945 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1946 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1947 +        final IncAction r = new IncAction(m);
1948 +        final CompletableFuture<Void> h = m.acceptEither(f, g, r);
1949 +        final CFException ex = new CFException();
1950 +
1951 +        f.completeExceptionally(ex);
1952 +        checkCompletedWithWrappedCFException(h, ex);
1953 +        g.complete(v1);
1954 +
1955 +        r.assertNotInvoked();
1956 +        checkCompletedNormally(g, v1);
1957 +        checkCompletedWithWrappedCFException(f, ex);
1958 +        checkCompletedWithWrappedCFException(h, ex);
1959 +    }}
1960 +
1961 +    public void testAcceptEither_exceptionalCompletion2() {
1962 +        for (ExecutionMode m : ExecutionMode.values())
1963 +        for (Integer v1 : new Integer[] { 1, null })
1964 +    {
1965 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1966 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1967 +        final IncAction r = new IncAction(m);
1968 +        final CompletableFuture<Void> h = m.acceptEither(f, g, r);
1969 +        final CFException ex = new CFException();
1970 +
1971 +        g.completeExceptionally(ex);
1972 +        checkCompletedWithWrappedCFException(h, ex);
1973 +        f.complete(v1);
1974 +
1975 +        r.assertNotInvoked();
1976 +        checkCompletedNormally(f, v1);
1977 +        checkCompletedWithWrappedCFException(g, ex);
1978 +        checkCompletedWithWrappedCFException(h, ex);
1979 +    }}
1980 +
1981 +    public void testAcceptEither_exceptionalCompletion3() {
1982 +        for (ExecutionMode m : ExecutionMode.values())
1983 +        for (Integer v1 : new Integer[] { 1, null })
1984 +    {
1985 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1986 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1987 +        final IncAction r = new IncAction(m);
1988 +        final CFException ex = new CFException();
1989 +
1990 +        g.completeExceptionally(ex);
1991 +        f.complete(v1);
1992 +        final CompletableFuture<Void> h = m.acceptEither(f, g, r);
1993 +
1994 +        // unspecified behavior
1995 +        Integer v;
1996 +        try {
1997 +            assertNull(h.join());
1998 +            r.assertInvoked();
1999 +            assertEquals(inc(v1), r.value);
2000 +        } catch (CompletionException ok) {
2001 +            checkCompletedWithWrappedCFException(h, ex);
2002 +            r.assertNotInvoked();
2003 +        }
2004 +
2005 +        checkCompletedWithWrappedCFException(g, ex);
2006 +        checkCompletedNormally(f, v1);
2007 +    }}
2008 +
2009 +    public void testAcceptEither_exceptionalCompletion4() {
2010 +        for (ExecutionMode m : ExecutionMode.values())
2011 +        for (Integer v1 : new Integer[] { 1, null })
2012 +    {
2013 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2014 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2015 +        final IncAction r = new IncAction(m);
2016 +        final CFException ex = new CFException();
2017 +
2018 +        f.completeExceptionally(ex);
2019 +        g.complete(v1);
2020 +        final CompletableFuture<Void> h = m.acceptEither(f, g, r);
2021 +
2022 +        // unspecified behavior
2023 +        Integer v;
2024 +        try {
2025 +            assertNull(h.join());
2026 +            r.assertInvoked();
2027 +            assertEquals(inc(v1), r.value);
2028 +        } catch (CompletionException ok) {
2029 +            checkCompletedWithWrappedCFException(h, ex);
2030 +            r.assertNotInvoked();
2031 +        }
2032 +
2033 +        checkCompletedWithWrappedCFException(f, ex);
2034 +        checkCompletedNormally(g, v1);
2035 +    }}
2036 +
2037 +    /**
2038 +     * acceptEither result completes exceptionally if action does
2039 +     */
2040 +    public void testAcceptEither_actionFailed1() {
2041 +        for (ExecutionMode m : ExecutionMode.values())
2042 +        for (Integer v1 : new Integer[] { 1, null })
2043 +        for (Integer v2 : new Integer[] { 2, null })
2044 +    {
2045 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2046 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2047 +        final FailingConsumer r = new FailingConsumer(m);
2048 +        final CompletableFuture<Void> h = m.acceptEither(f, g, r);
2049 +
2050 +        f.complete(v1);
2051 +        checkCompletedWithWrappedCFException(h);
2052 +        g.complete(v2);
2053 +        checkCompletedNormally(f, v1);
2054 +        checkCompletedNormally(g, v2);
2055 +    }}
2056 +
2057 +    public void testAcceptEither_actionFailed2() {
2058 +        for (ExecutionMode m : ExecutionMode.values())
2059 +        for (Integer v1 : new Integer[] { 1, null })
2060 +        for (Integer v2 : new Integer[] { 2, null })
2061 +    {
2062 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2063 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2064 +        final FailingConsumer r = new FailingConsumer(m);
2065 +        final CompletableFuture<Void> h = m.acceptEither(f, g, r);
2066 +
2067 +        g.complete(v2);
2068 +        checkCompletedWithWrappedCFException(h);
2069 +        f.complete(v1);
2070 +        checkCompletedNormally(f, v1);
2071 +        checkCompletedNormally(g, v2);
2072 +    }}
2073 +
2074 +    /**
2075 +     * acceptEither result completes exceptionally if either source cancelled
2076 +     */
2077 +    public void testAcceptEither_sourceCancelled1() {
2078 +        for (ExecutionMode m : ExecutionMode.values())
2079 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2080 +        for (Integer v1 : new Integer[] { 1, null })
2081 +    {
2082 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2083 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2084 +        final IncAction r = new IncAction(m);
2085 +        final CompletableFuture<Void> h = m.acceptEither(f, g, r);
2086 +
2087 +        assertTrue(f.cancel(mayInterruptIfRunning));
2088 +        checkCompletedWithWrappedCancellationException(h);
2089 +        g.complete(v1);
2090 +
2091 +        checkCancelled(f);
2092 +        r.assertNotInvoked();
2093 +        checkCompletedNormally(g, v1);
2094 +        checkCompletedWithWrappedCancellationException(h);
2095 +    }}
2096 +
2097 +    public void testAcceptEither_sourceCancelled2() {
2098 +        for (ExecutionMode m : ExecutionMode.values())
2099 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2100 +        for (Integer v1 : new Integer[] { 1, null })
2101 +    {
2102 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2103 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2104 +        final IncAction r = new IncAction(m);
2105 +        final CompletableFuture<Void> h = m.acceptEither(f, g, r);
2106 +
2107 +        assertTrue(g.cancel(mayInterruptIfRunning));
2108 +        checkCompletedWithWrappedCancellationException(h);
2109 +        f.complete(v1);
2110 +
2111 +        checkCancelled(g);
2112 +        r.assertNotInvoked();
2113 +        checkCompletedNormally(f, v1);
2114 +        checkCompletedWithWrappedCancellationException(h);
2115 +    }}
2116 +
2117 +    public void testAcceptEither_sourceCancelled3() {
2118 +        for (ExecutionMode m : ExecutionMode.values())
2119 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2120 +        for (Integer v1 : new Integer[] { 1, null })
2121 +    {
2122 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2123 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2124 +        final IncAction r = new IncAction(m);
2125 +
2126 +        assertTrue(g.cancel(mayInterruptIfRunning));
2127 +        f.complete(v1);
2128 +        final CompletableFuture<Void> h = m.acceptEither(f, g, r);
2129 +
2130 +        // unspecified behavior
2131 +        Integer v;
2132 +        try {
2133 +            assertNull(h.join());
2134 +            r.assertInvoked();
2135 +            assertEquals(inc(v1), r.value);
2136 +        } catch (CompletionException ok) {
2137 +            checkCompletedWithWrappedCancellationException(h);
2138 +            r.assertNotInvoked();
2139 +        }
2140 +
2141 +        checkCancelled(g);
2142 +        checkCompletedNormally(f, v1);
2143 +    }}
2144 +
2145 +    public void testAcceptEither_sourceCancelled4() {
2146 +        for (ExecutionMode m : ExecutionMode.values())
2147 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2148 +        for (Integer v1 : new Integer[] { 1, null })
2149 +    {
2150 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2151 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2152 +        final IncAction r = new IncAction(m);
2153 +
2154 +        assertTrue(f.cancel(mayInterruptIfRunning));
2155 +        g.complete(v1);
2156 +        final CompletableFuture<Void> h = m.acceptEither(f, g, r);
2157 +
2158 +        // unspecified behavior
2159 +        Integer v;
2160 +        try {
2161 +            assertNull(h.join());
2162 +            r.assertInvoked();
2163 +            assertEquals(inc(v1), r.value);
2164 +        } catch (CompletionException ok) {
2165 +            checkCompletedWithWrappedCancellationException(h);
2166 +            r.assertNotInvoked();
2167 +        }
2168 +
2169 +        checkCancelled(f);
2170 +        checkCompletedNormally(g, v1);
2171 +    }}
2172 +
2173 +    /**
2174 +     * runAfterEither result completes normally after normal completion
2175 +     * of either source
2176 +     */
2177 +    public void testRunAfterEither_normalCompletion1() {
2178 +        for (ExecutionMode m : ExecutionMode.values())
2179 +        for (Integer v1 : new Integer[] { 1, null })
2180 +        for (Integer v2 : new Integer[] { 2, null })
2181 +    {
2182 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2183 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2184 +        final Noop r = new Noop(m);
2185 +        final CompletableFuture<Void> h = m.runAfterEither(f, g, r);
2186 +
2187 +        f.complete(v1);
2188 +        checkCompletedNormally(h, null);
2189 +        r.assertInvoked();
2190 +        g.complete(v2);
2191 +
2192 +        checkCompletedNormally(f, v1);
2193 +        checkCompletedNormally(g, v2);
2194 +        checkCompletedNormally(h, null);
2195 +        r.assertInvoked();
2196 +    }}
2197 +
2198 +    public void testRunAfterEither_normalCompletion2() {
2199 +        for (ExecutionMode m : ExecutionMode.values())
2200 +        for (Integer v1 : new Integer[] { 1, null })
2201 +        for (Integer v2 : new Integer[] { 2, null })
2202 +    {
2203 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2204 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2205 +        final Noop r = new Noop(m);
2206 +        final CompletableFuture<Void> h = m.runAfterEither(f, g, r);
2207 +
2208 +        g.complete(v2);
2209 +        checkCompletedNormally(h, null);
2210 +        r.assertInvoked();
2211 +        f.complete(v1);
2212 +
2213 +        checkCompletedNormally(f, v1);
2214 +        checkCompletedNormally(g, v2);
2215 +        checkCompletedNormally(h, null);
2216 +        r.assertInvoked();
2217 +        }}
2218 +
2219 +    public void testRunAfterEither_normalCompletion3() {
2220 +        for (ExecutionMode m : ExecutionMode.values())
2221 +        for (Integer v1 : new Integer[] { 1, null })
2222 +        for (Integer v2 : new Integer[] { 2, null })
2223 +    {
2224 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2225 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2226 +        final Noop r = new Noop(m);
2227 +
2228 +        f.complete(v1);
2229 +        g.complete(v2);
2230 +        final CompletableFuture<Void> h = m.runAfterEither(f, g, r);
2231 +
2232 +        checkCompletedNormally(h, null);
2233 +        checkCompletedNormally(f, v1);
2234 +        checkCompletedNormally(g, v2);
2235 +        r.assertInvoked();
2236 +    }}
2237 +
2238 +    /**
2239 +     * runAfterEither result completes exceptionally after exceptional
2240 +     * completion of either source
2241 +     */
2242 +    public void testRunAfterEither_exceptionalCompletion1() {
2243 +        for (ExecutionMode m : ExecutionMode.values())
2244 +        for (Integer v1 : new Integer[] { 1, null })
2245 +    {
2246 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2247 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2248 +        final Noop r = new Noop(m);
2249 +        final CompletableFuture<Void> h = m.runAfterEither(f, g, r);
2250 +        final CFException ex = new CFException();
2251 +
2252 +        f.completeExceptionally(ex);
2253 +        checkCompletedWithWrappedCFException(h, ex);
2254 +        g.complete(v1);
2255 +
2256 +        r.assertNotInvoked();
2257 +        checkCompletedNormally(g, v1);
2258 +        checkCompletedWithWrappedCFException(f, ex);
2259 +        checkCompletedWithWrappedCFException(h, ex);
2260 +    }}
2261 +
2262 +    public void testRunAfterEither_exceptionalCompletion2() {
2263 +        for (ExecutionMode m : ExecutionMode.values())
2264 +        for (Integer v1 : new Integer[] { 1, null })
2265 +    {
2266 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2267 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2268 +        final Noop r = new Noop(m);
2269 +        final CompletableFuture<Void> h = m.runAfterEither(f, g, r);
2270 +        final CFException ex = new CFException();
2271 +
2272 +        g.completeExceptionally(ex);
2273 +        checkCompletedWithWrappedCFException(h, ex);
2274 +        f.complete(v1);
2275 +
2276 +        r.assertNotInvoked();
2277 +        checkCompletedNormally(f, v1);
2278 +        checkCompletedWithWrappedCFException(g, ex);
2279 +        checkCompletedWithWrappedCFException(h, ex);
2280 +    }}
2281 +
2282 +    public void testRunAfterEither_exceptionalCompletion3() {
2283 +        for (ExecutionMode m : ExecutionMode.values())
2284 +        for (Integer v1 : new Integer[] { 1, null })
2285 +    {
2286 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2287 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2288 +        final Noop r = new Noop(m);
2289 +        final CFException ex = new CFException();
2290 +
2291 +        g.completeExceptionally(ex);
2292 +        f.complete(v1);
2293 +        final CompletableFuture<Void> h = m.runAfterEither(f, g, r);
2294 +
2295 +        // unspecified behavior
2296 +        Integer v;
2297 +        try {
2298 +            assertNull(h.join());
2299 +            r.assertInvoked();
2300 +        } catch (CompletionException ok) {
2301 +            checkCompletedWithWrappedCFException(h, ex);
2302 +            r.assertNotInvoked();
2303 +        }
2304 +
2305 +        checkCompletedWithWrappedCFException(g, ex);
2306 +        checkCompletedNormally(f, v1);
2307 +    }}
2308 +
2309 +    public void testRunAfterEither_exceptionalCompletion4() {
2310 +        for (ExecutionMode m : ExecutionMode.values())
2311 +        for (Integer v1 : new Integer[] { 1, null })
2312 +    {
2313 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2314 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2315 +        final Noop r = new Noop(m);
2316 +        final CFException ex = new CFException();
2317 +
2318 +        f.completeExceptionally(ex);
2319 +        g.complete(v1);
2320 +        final CompletableFuture<Void> h = m.runAfterEither(f, g, r);
2321 +
2322 +        // unspecified behavior
2323 +        Integer v;
2324 +        try {
2325 +            assertNull(h.join());
2326 +            r.assertInvoked();
2327 +        } catch (CompletionException ok) {
2328 +            checkCompletedWithWrappedCFException(h, ex);
2329 +            r.assertNotInvoked();
2330 +        }
2331 +
2332 +        checkCompletedWithWrappedCFException(f, ex);
2333 +        checkCompletedNormally(g, v1);
2334 +    }}
2335 +
2336 +    /**
2337 +     * runAfterEither result completes exceptionally if action does
2338 +     */
2339 +    public void testRunAfterEither_actionFailed1() {
2340 +        for (ExecutionMode m : ExecutionMode.values())
2341 +        for (Integer v1 : new Integer[] { 1, null })
2342 +        for (Integer v2 : new Integer[] { 2, null })
2343 +    {
2344 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2345 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2346 +        final FailingRunnable r = new FailingRunnable(m);
2347 +        final CompletableFuture<Void> h = m.runAfterEither(f, g, r);
2348 +
2349 +        f.complete(v1);
2350 +        checkCompletedWithWrappedCFException(h);
2351 +        g.complete(v2);
2352 +        checkCompletedNormally(f, v1);
2353 +        checkCompletedNormally(g, v2);
2354 +    }}
2355 +
2356 +    public void testRunAfterEither_actionFailed2() {
2357 +        for (ExecutionMode m : ExecutionMode.values())
2358 +        for (Integer v1 : new Integer[] { 1, null })
2359 +        for (Integer v2 : new Integer[] { 2, null })
2360 +    {
2361 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2362 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2363 +        final FailingRunnable r = new FailingRunnable(m);
2364 +        final CompletableFuture<Void> h = m.runAfterEither(f, g, r);
2365 +
2366 +        g.complete(v2);
2367 +        checkCompletedWithWrappedCFException(h);
2368 +        f.complete(v1);
2369 +        checkCompletedNormally(f, v1);
2370 +        checkCompletedNormally(g, v2);
2371 +    }}
2372 +
2373 +    /**
2374 +     * runAfterEither result completes exceptionally if either source cancelled
2375 +     */
2376 +    public void testRunAfterEither_sourceCancelled1() {
2377 +        for (ExecutionMode m : ExecutionMode.values())
2378 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2379 +        for (Integer v1 : new Integer[] { 1, null })
2380 +    {
2381 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2382 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2383 +        final Noop r = new Noop(m);
2384 +        final CompletableFuture<Void> h = m.runAfterEither(f, g, r);
2385 +
2386 +        assertTrue(f.cancel(mayInterruptIfRunning));
2387 +        checkCompletedWithWrappedCancellationException(h);
2388 +        g.complete(v1);
2389 +
2390 +        checkCancelled(f);
2391 +        r.assertNotInvoked();
2392 +        checkCompletedNormally(g, v1);
2393 +        checkCompletedWithWrappedCancellationException(h);
2394 +    }}
2395 +
2396 +    public void testRunAfterEither_sourceCancelled2() {
2397 +        for (ExecutionMode m : ExecutionMode.values())
2398 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2399 +        for (Integer v1 : new Integer[] { 1, null })
2400 +    {
2401 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2402 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2403 +        final Noop r = new Noop(m);
2404 +        final CompletableFuture<Void> h = m.runAfterEither(f, g, r);
2405 +
2406 +        assertTrue(g.cancel(mayInterruptIfRunning));
2407 +        checkCompletedWithWrappedCancellationException(h);
2408 +        f.complete(v1);
2409 +
2410 +        checkCancelled(g);
2411 +        r.assertNotInvoked();
2412 +        checkCompletedNormally(f, v1);
2413 +        checkCompletedWithWrappedCancellationException(h);
2414 +    }}
2415 +
2416 +    public void testRunAfterEither_sourceCancelled3() {
2417 +        for (ExecutionMode m : ExecutionMode.values())
2418 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2419 +        for (Integer v1 : new Integer[] { 1, null })
2420 +    {
2421 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2422 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2423 +        final Noop r = new Noop(m);
2424 +
2425 +        assertTrue(g.cancel(mayInterruptIfRunning));
2426 +        f.complete(v1);
2427 +        final CompletableFuture<Void> h = m.runAfterEither(f, g, r);
2428 +
2429 +        // unspecified behavior
2430 +        Integer v;
2431 +        try {
2432 +            assertNull(h.join());
2433 +            r.assertInvoked();
2434 +        } catch (CompletionException ok) {
2435 +            checkCompletedWithWrappedCancellationException(h);
2436 +            r.assertNotInvoked();
2437 +        }
2438 +
2439 +        checkCancelled(g);
2440 +        checkCompletedNormally(f, v1);
2441 +    }}
2442 +
2443 +    public void testRunAfterEither_sourceCancelled4() {
2444 +        for (ExecutionMode m : ExecutionMode.values())
2445 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2446 +        for (Integer v1 : new Integer[] { 1, null })
2447 +    {
2448 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2449 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2450 +        final Noop r = new Noop(m);
2451 +
2452 +        assertTrue(f.cancel(mayInterruptIfRunning));
2453 +        g.complete(v1);
2454 +        final CompletableFuture<Void> h = m.runAfterEither(f, g, r);
2455 +
2456 +        // unspecified behavior
2457 +        Integer v;
2458 +        try {
2459 +            assertNull(h.join());
2460 +            r.assertInvoked();
2461 +        } catch (CompletionException ok) {
2462 +            checkCompletedWithWrappedCancellationException(h);
2463 +            r.assertNotInvoked();
2464 +        }
2465 +
2466 +        checkCancelled(f);
2467 +        checkCompletedNormally(g, v1);
2468 +    }}
2469 +
2470 +    /**
2471 +     * thenCompose result completes normally after normal completion of source
2472 +     */
2473 +    public void testThenCompose_normalCompletion() {
2474 +        for (ExecutionMode m : ExecutionMode.values())
2475 +        for (boolean createIncomplete : new boolean[] { true, false })
2476 +        for (Integer v1 : new Integer[] { 1, null })
2477 +    {
2478 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2479 +        final CompletableFutureInc r = new CompletableFutureInc(m);
2480 +        if (!createIncomplete) f.complete(v1);
2481 +        final CompletableFuture<Integer> g = m.thenCompose(f, r);
2482 +        if (createIncomplete) f.complete(v1);
2483 +
2484 +        checkCompletedNormally(g, inc(v1));
2485 +        checkCompletedNormally(f, v1);
2486 +        r.assertInvoked();
2487 +    }}
2488 +
2489 +    /**
2490 +     * thenCompose result completes exceptionally after exceptional
2491 +     * completion of source
2492 +     */
2493 +    public void testThenCompose_exceptionalCompletion() {
2494 +        for (ExecutionMode m : ExecutionMode.values())
2495 +        for (boolean createIncomplete : new boolean[] { true, false })
2496 +    {
2497 +        final CFException ex = new CFException();
2498 +        final CompletableFutureInc r = new CompletableFutureInc(m);
2499 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2500 +        if (!createIncomplete) f.completeExceptionally(ex);
2501 +        final CompletableFuture<Integer> g = m.thenCompose(f, r);
2502 +        if (createIncomplete) f.completeExceptionally(ex);
2503 +
2504 +        checkCompletedWithWrappedCFException(g, ex);
2505 +        checkCompletedWithWrappedCFException(f, ex);
2506 +        r.assertNotInvoked();
2507 +    }}
2508 +
2509 +    /**
2510 +     * thenCompose result completes exceptionally if action does
2511 +     */
2512 +    public void testThenCompose_actionFailed() {
2513 +        for (ExecutionMode m : ExecutionMode.values())
2514 +        for (boolean createIncomplete : new boolean[] { true, false })
2515 +        for (Integer v1 : new Integer[] { 1, null })
2516 +    {
2517 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2518 +        final FailingCompletableFutureFunction r
2519 +            = new FailingCompletableFutureFunction(m);
2520 +        if (!createIncomplete) f.complete(v1);
2521 +        final CompletableFuture<Integer> g = m.thenCompose(f, r);
2522 +        if (createIncomplete) f.complete(v1);
2523 +
2524 +        checkCompletedWithWrappedCFException(g);
2525 +        checkCompletedNormally(f, v1);
2526 +    }}
2527 +
2528 +    /**
2529 +     * thenCompose result completes exceptionally if source cancelled
2530 +     */
2531 +    public void testThenCompose_sourceCancelled() {
2532 +        for (ExecutionMode m : ExecutionMode.values())
2533 +        for (boolean createIncomplete : new boolean[] { true, false })
2534 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2535 +    {
2536 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2537 +        final CompletableFutureInc r = new CompletableFutureInc(m);
2538 +        if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
2539 +        final CompletableFuture<Integer> g = m.thenCompose(f, r);
2540 +        if (createIncomplete) {
2541 +            checkIncomplete(g);
2542 +            assertTrue(f.cancel(mayInterruptIfRunning));
2543 +        }
2544 +
2545 +        checkCompletedWithWrappedCancellationException(g);
2546 +        checkCancelled(f);
2547 +    }}
2548 +
2549 +    // other static methods
2550 +
2551 +    /**
2552       * allOf(no component futures) returns a future completed normally
2553       * with the value null
2554       */
2555      public void testAllOf_empty() throws Exception {
2556 <        CompletableFuture<?> f = CompletableFuture.allOf();
2556 >        CompletableFuture<Void> f = CompletableFuture.allOf();
2557          checkCompletedNormally(f, null);
2558      }
2559  
2560      /**
2561 +     * allOf returns a future completed normally with the value null
2562 +     * when all components complete normally
2563 +     */
2564 +    public void testAllOf_normal() throws Exception {
2565 +        for (int k = 1; k < 20; ++k) {
2566 +            CompletableFuture<Integer>[] fs
2567 +                = (CompletableFuture<Integer>[]) new CompletableFuture[k];
2568 +            for (int i = 0; i < k; ++i)
2569 +                fs[i] = new CompletableFuture<>();
2570 +            CompletableFuture<Void> f = CompletableFuture.allOf(fs);
2571 +            for (int i = 0; i < k; ++i) {
2572 +                checkIncomplete(f);
2573 +                checkIncomplete(CompletableFuture.allOf(fs));
2574 +                fs[i].complete(one);
2575 +            }
2576 +            checkCompletedNormally(f, null);
2577 +            checkCompletedNormally(CompletableFuture.allOf(fs), null);
2578 +        }
2579 +    }
2580 +
2581 +    public void testAllOf_backwards() throws Exception {
2582 +        for (int k = 1; k < 20; ++k) {
2583 +            CompletableFuture<Integer>[] fs
2584 +                = (CompletableFuture<Integer>[]) new CompletableFuture[k];
2585 +            for (int i = 0; i < k; ++i)
2586 +                fs[i] = new CompletableFuture<>();
2587 +            CompletableFuture<Void> f = CompletableFuture.allOf(fs);
2588 +            for (int i = k - 1; i >= 0; i--) {
2589 +                checkIncomplete(f);
2590 +                checkIncomplete(CompletableFuture.allOf(fs));
2591 +                fs[i].complete(one);
2592 +            }
2593 +            checkCompletedNormally(f, null);
2594 +            checkCompletedNormally(CompletableFuture.allOf(fs), null);
2595 +        }
2596 +    }
2597 +
2598 +    /**
2599       * anyOf(no component futures) returns an incomplete future
2600       */
2601      public void testAnyOf_empty() throws Exception {
2602 <        CompletableFuture<?> f = CompletableFuture.anyOf();
2602 >        CompletableFuture<Object> f = CompletableFuture.anyOf();
2603          checkIncomplete(f);
2604      }
2605 +
2606 +    /**
2607 +     * anyOf returns a future completed normally with a value when
2608 +     * a component future does
2609 +     */
2610 +    public void testAnyOf_normal() throws Exception {
2611 +        for (int k = 0; k < 10; ++k) {
2612 +            CompletableFuture[] fs = new CompletableFuture[k];
2613 +            for (int i = 0; i < k; ++i)
2614 +                fs[i] = new CompletableFuture<>();
2615 +            CompletableFuture<Object> f = CompletableFuture.anyOf(fs);
2616 +            checkIncomplete(f);
2617 +            for (int i = 0; i < k; ++i) {
2618 +                fs[i].complete(one);
2619 +                checkCompletedNormally(f, one);
2620 +                checkCompletedNormally(CompletableFuture.anyOf(fs), one);
2621 +            }
2622 +        }
2623 +    }
2624 +
2625 +    /**
2626 +     * anyOf result completes exceptionally when any component does.
2627 +     */
2628 +    public void testAnyOf_exceptional() throws Exception {
2629 +        for (int k = 0; k < 10; ++k) {
2630 +            CompletableFuture[] fs = new CompletableFuture[k];
2631 +            for (int i = 0; i < k; ++i)
2632 +                fs[i] = new CompletableFuture<>();
2633 +            CompletableFuture<Object> f = CompletableFuture.anyOf(fs);
2634 +            checkIncomplete(f);
2635 +            for (int i = 0; i < k; ++i) {
2636 +                fs[i].completeExceptionally(new CFException());
2637 +                checkCompletedWithWrappedCFException(f);
2638 +                checkCompletedWithWrappedCFException(CompletableFuture.anyOf(fs));
2639 +            }
2640 +        }
2641 +    }
2642 +
2643 +    /**
2644 +     * Completion methods throw NullPointerException with null arguments
2645 +     */
2646 +    public void testNPE() {
2647 +        CompletableFuture<Integer> f = new CompletableFuture<>();
2648 +        CompletableFuture<Integer> g = new CompletableFuture<>();
2649 +        CompletableFuture<Integer> nullFuture = (CompletableFuture<Integer>)null;
2650 +        CompletableFuture<?> h;
2651 +        ThreadExecutor exec = new ThreadExecutor();
2652 +
2653 +        Runnable[] throwingActions = {
2654 +            () -> CompletableFuture.supplyAsync(null),
2655 +            () -> CompletableFuture.supplyAsync(null, exec),
2656 +            () -> CompletableFuture.supplyAsync(new IntegerSupplier(ExecutionMode.DEFAULT, 42), null),
2657 +
2658 +            () -> CompletableFuture.runAsync(null),
2659 +            () -> CompletableFuture.runAsync(null, exec),
2660 +            () -> CompletableFuture.runAsync(() -> {}, null),
2661 +
2662 +            () -> f.completeExceptionally(null),
2663 +
2664 +            () -> f.thenApply(null),
2665 +            () -> f.thenApplyAsync(null),
2666 +            () -> f.thenApplyAsync((x) -> x, null),
2667 +            () -> f.thenApplyAsync(null, exec),
2668 +
2669 +            () -> f.thenAccept(null),
2670 +            () -> f.thenAcceptAsync(null),
2671 +            () -> f.thenAcceptAsync((x) -> {} , null),
2672 +            () -> f.thenAcceptAsync(null, exec),
2673 +
2674 +            () -> f.thenRun(null),
2675 +            () -> f.thenRunAsync(null),
2676 +            () -> f.thenRunAsync(() -> {} , null),
2677 +            () -> f.thenRunAsync(null, exec),
2678 +
2679 +            () -> f.thenCombine(g, null),
2680 +            () -> f.thenCombineAsync(g, null),
2681 +            () -> f.thenCombineAsync(g, null, exec),
2682 +            () -> f.thenCombine(nullFuture, (x, y) -> x),
2683 +            () -> f.thenCombineAsync(nullFuture, (x, y) -> x),
2684 +            () -> f.thenCombineAsync(nullFuture, (x, y) -> x, exec),
2685 +            () -> f.thenCombineAsync(g, (x, y) -> x, null),
2686 +
2687 +            () -> f.thenAcceptBoth(g, null),
2688 +            () -> f.thenAcceptBothAsync(g, null),
2689 +            () -> f.thenAcceptBothAsync(g, null, exec),
2690 +            () -> f.thenAcceptBoth(nullFuture, (x, y) -> {}),
2691 +            () -> f.thenAcceptBothAsync(nullFuture, (x, y) -> {}),
2692 +            () -> f.thenAcceptBothAsync(nullFuture, (x, y) -> {}, exec),
2693 +            () -> f.thenAcceptBothAsync(g, (x, y) -> {}, null),
2694 +
2695 +            () -> f.runAfterBoth(g, null),
2696 +            () -> f.runAfterBothAsync(g, null),
2697 +            () -> f.runAfterBothAsync(g, null, exec),
2698 +            () -> f.runAfterBoth(nullFuture, () -> {}),
2699 +            () -> f.runAfterBothAsync(nullFuture, () -> {}),
2700 +            () -> f.runAfterBothAsync(nullFuture, () -> {}, exec),
2701 +            () -> f.runAfterBothAsync(g, () -> {}, null),
2702 +
2703 +            () -> f.applyToEither(g, null),
2704 +            () -> f.applyToEitherAsync(g, null),
2705 +            () -> f.applyToEitherAsync(g, null, exec),
2706 +            () -> f.applyToEither(nullFuture, (x) -> x),
2707 +            () -> f.applyToEitherAsync(nullFuture, (x) -> x),
2708 +            () -> f.applyToEitherAsync(nullFuture, (x) -> x, exec),
2709 +            () -> f.applyToEitherAsync(g, (x) -> x, null),
2710 +
2711 +            () -> f.acceptEither(g, null),
2712 +            () -> f.acceptEitherAsync(g, null),
2713 +            () -> f.acceptEitherAsync(g, null, exec),
2714 +            () -> f.acceptEither(nullFuture, (x) -> {}),
2715 +            () -> f.acceptEitherAsync(nullFuture, (x) -> {}),
2716 +            () -> f.acceptEitherAsync(nullFuture, (x) -> {}, exec),
2717 +            () -> f.acceptEitherAsync(g, (x) -> {}, null),
2718 +
2719 +            () -> f.runAfterEither(g, null),
2720 +            () -> f.runAfterEitherAsync(g, null),
2721 +            () -> f.runAfterEitherAsync(g, null, exec),
2722 +            () -> f.runAfterEither(nullFuture, () -> {}),
2723 +            () -> f.runAfterEitherAsync(nullFuture, () -> {}),
2724 +            () -> f.runAfterEitherAsync(nullFuture, () -> {}, exec),
2725 +            () -> f.runAfterEitherAsync(g, () -> {}, null),
2726 +
2727 +            () -> f.thenCompose(null),
2728 +            () -> f.thenComposeAsync(null),
2729 +            () -> f.thenComposeAsync(new CompletableFutureInc(ExecutionMode.EXECUTOR), null),
2730 +            () -> f.thenComposeAsync(null, exec),
2731 +
2732 +            () -> f.exceptionally(null),
2733 +
2734 +            () -> f.handle(null),
2735 +
2736 +            () -> CompletableFuture.allOf((CompletableFuture<?>)null),
2737 +            () -> CompletableFuture.allOf((CompletableFuture<?>[])null),
2738 +            () -> CompletableFuture.allOf(f, null),
2739 +            () -> CompletableFuture.allOf(null, f),
2740 +
2741 +            () -> CompletableFuture.anyOf((CompletableFuture<?>)null),
2742 +            () -> CompletableFuture.anyOf((CompletableFuture<?>[])null),
2743 +            () -> CompletableFuture.anyOf(f, null),
2744 +            () -> CompletableFuture.anyOf(null, f),
2745 +
2746 +            () -> f.obtrudeException(null),
2747 +        };
2748 +
2749 +        assertThrows(NullPointerException.class, throwingActions);
2750 +        assertEquals(0, exec.count.get());
2751 +    }
2752 +
2753 +    /**
2754 +     * toCompletableFuture returns this CompletableFuture.
2755 +     */
2756 +    public void testToCompletableFuture() {
2757 +        CompletableFuture<Integer> f = new CompletableFuture<>();
2758 +        assertSame(f, f.toCompletableFuture());
2759 +    }
2760 +
2761 +    /**
2762 +     * whenComplete action executes on normal completion, propagating
2763 +     * source result.
2764 +     */
2765 +    public void testWhenComplete_normalCompletion1() {
2766 +        for (ExecutionMode m : ExecutionMode.values())
2767 +        for (boolean createIncomplete : new boolean[] { true, false })
2768 +        for (Integer v1 : new Integer[] { 1, null })
2769 +    {
2770 +        final AtomicInteger a = new AtomicInteger(0);
2771 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2772 +        if (!createIncomplete) f.complete(v1);
2773 +        final CompletableFuture<Integer> g = m.whenComplete
2774 +            (f,
2775 +             (Integer x, Throwable t) -> {
2776 +                threadAssertSame(x, v1);
2777 +                threadAssertNull(t);
2778 +                a.getAndIncrement();
2779 +            });
2780 +        if (createIncomplete) f.complete(v1);
2781 +
2782 +        checkCompletedNormally(g, v1);
2783 +        checkCompletedNormally(f, v1);
2784 +        assertEquals(1, a.get());
2785 +    }}
2786 +
2787 +    /**
2788 +     * whenComplete action executes on exceptional completion, propagating
2789 +     * source result.
2790 +     */
2791 +    public void testWhenComplete_exceptionalCompletion() {
2792 +        for (ExecutionMode m : ExecutionMode.values())
2793 +        for (boolean createIncomplete : new boolean[] { true, false })
2794 +        for (Integer v1 : new Integer[] { 1, null })
2795 +    {
2796 +        final AtomicInteger a = new AtomicInteger(0);
2797 +        final CFException ex = new CFException();
2798 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2799 +        if (!createIncomplete) f.completeExceptionally(ex);
2800 +        final CompletableFuture<Integer> g = m.whenComplete
2801 +            (f,
2802 +             (Integer x, Throwable t) -> {
2803 +                threadAssertNull(x);
2804 +                threadAssertSame(t, ex);
2805 +                a.getAndIncrement();
2806 +            });
2807 +        if (createIncomplete) f.completeExceptionally(ex);
2808 +        checkCompletedWithWrappedCFException(f, ex);
2809 +        checkCompletedWithWrappedCFException(g, ex);
2810 +        assertEquals(1, a.get());
2811 +    }}
2812 +
2813 +    /**
2814 +     * whenComplete action executes on cancelled source, propagating
2815 +     * CancellationException.
2816 +     */
2817 +    public void testWhenComplete_sourceCancelled() {
2818 +        for (ExecutionMode m : ExecutionMode.values())
2819 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2820 +        for (boolean createIncomplete : new boolean[] { true, false })
2821 +    {
2822 +        final AtomicInteger a = new AtomicInteger(0);
2823 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2824 +        if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
2825 +        final CompletableFuture<Integer> g = m.whenComplete
2826 +            (f,
2827 +             (Integer x, Throwable t) -> {
2828 +                threadAssertNull(x);
2829 +                threadAssertTrue(t instanceof CancellationException);
2830 +                a.getAndIncrement();
2831 +            });
2832 +        if (createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
2833 +
2834 +        //try { g.join(); } catch (Throwable t) { throw new Error(t); }
2835 +        checkCompletedWithWrappedCancellationException(g);
2836 +        checkCancelled(f);
2837 +        assertEquals(1, a.get());
2838 +    }}
2839 +
2840 +    /**
2841 +     * If a whenComplete action throws an exception when triggered by
2842 +     * a normal completion, it completes exceptionally
2843 +     */
2844 +    public void testWhenComplete_actionFailed() {
2845 +        for (boolean createIncomplete : new boolean[] { true, false })
2846 +        for (ExecutionMode m : ExecutionMode.values())
2847 +        for (Integer v1 : new Integer[] { 1, null })
2848 +    {
2849 +        final AtomicInteger a = new AtomicInteger(0);
2850 +        final CFException ex = new CFException();
2851 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2852 +        if (!createIncomplete) f.complete(v1);
2853 +        final CompletableFuture<Integer> g = m.whenComplete
2854 +            (f,
2855 +             (Integer x, Throwable t) -> {
2856 +                threadAssertSame(x, v1);
2857 +                threadAssertNull(t);
2858 +                a.getAndIncrement();
2859 +                throw ex;
2860 +            });
2861 +        if (createIncomplete) f.complete(v1);
2862 +        checkCompletedNormally(f, v1);
2863 +        checkCompletedWithWrappedCFException(g, ex);
2864 +        assertEquals(1, a.get());
2865 +    }}
2866 +
2867 +    /**
2868 +     * If a whenComplete action throws an exception when triggered by
2869 +     * a source completion that also throws an exception, the source
2870 +     * exception takes precedence.
2871 +     */
2872 +    public void testWhenComplete_actionFailedSourceFailed() {
2873 +        for (boolean createIncomplete : new boolean[] { true, false })
2874 +        for (ExecutionMode m : ExecutionMode.values())
2875 +        for (Integer v1 : new Integer[] { 1, null })
2876 +    {
2877 +        final AtomicInteger a = new AtomicInteger(0);
2878 +        final CFException ex1 = new CFException();
2879 +        final CFException ex2 = new CFException();
2880 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2881 +
2882 +        if (!createIncomplete) f.completeExceptionally(ex1);
2883 +        final CompletableFuture<Integer> g = m.whenComplete
2884 +            (f,
2885 +             (Integer x, Throwable t) -> {
2886 +                threadAssertSame(t, ex1);
2887 +                threadAssertNull(x);
2888 +                a.getAndIncrement();
2889 +                throw ex2;
2890 +            });
2891 +        if (createIncomplete) f.completeExceptionally(ex1);
2892 +
2893 +        checkCompletedWithWrappedCFException(f, ex1);
2894 +        checkCompletedWithWrappedCFException(g, ex1);
2895 +        assertEquals(1, a.get());
2896 +    }}
2897 +
2898   }

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