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Comparing jsr166/src/test/tck/CompletableFutureTest.java (file contents):
Revision 1.3 by jsr166, Sat Feb 9 19:33:08 2013 UTC vs.
Revision 1.98 by jsr166, Wed Dec 31 19:05:42 2014 UTC

# Line 1 | Line 1
1   /*
2 < * Written by Doug Lea with assistance from members of JCP JSR-166
3 < * Expert Group and released to the public domain, as explained at
2 > * Written by Doug Lea and Martin Buchholz with assistance from
3 > * members of JCP JSR-166 Expert Group and released to the public
4 > * domain, as explained at
5   * http://creativecommons.org/publicdomain/zero/1.0/
5 * Other contributors include Andrew Wright, Jeffrey Hayes,
6 * Pat Fisher, Mike Judd.
6   */
7  
8 < import junit.framework.*;
8 > import static java.util.concurrent.TimeUnit.MILLISECONDS;
9 > import static java.util.concurrent.TimeUnit.SECONDS;
10 >
11 > import java.util.ArrayList;
12 > import java.util.List;
13 > import java.util.Objects;
14   import java.util.concurrent.Callable;
15   import java.util.concurrent.CancellationException;
12 import java.util.concurrent.CountDownLatch;
13 import java.util.concurrent.ExecutionException;
14 import java.util.concurrent.Future;
16   import java.util.concurrent.CompletableFuture;
17 + import java.util.concurrent.CompletionException;
18 + import java.util.concurrent.CompletionStage;
19 + import java.util.concurrent.ExecutionException;
20 + import java.util.concurrent.Executor;
21 + import java.util.concurrent.ForkJoinPool;
22 + import java.util.concurrent.ForkJoinTask;
23   import java.util.concurrent.TimeoutException;
24   import java.util.concurrent.atomic.AtomicInteger;
25 < import static java.util.concurrent.TimeUnit.MILLISECONDS;
26 < import static java.util.concurrent.TimeUnit.SECONDS;
27 < import java.util.*;
25 > import java.util.function.BiConsumer;
26 > import java.util.function.BiFunction;
27 > import java.util.function.Consumer;
28 > import java.util.function.Function;
29 > import java.util.function.Supplier;
30 >
31 > import junit.framework.Test;
32 > import junit.framework.TestSuite;
33  
34   public class CompletableFutureTest extends JSR166TestCase {
35  
# Line 28 | Line 40 | public class CompletableFutureTest exten
40          return new TestSuite(CompletableFutureTest.class);
41      }
42  
43 <    // XXXX Just a skeleton implementation for now.
44 <    public void testTODO() {
45 <        fail("Please add some real tests!");
43 >    static class CFException extends RuntimeException {}
44 >
45 >    void checkIncomplete(CompletableFuture<?> f) {
46 >        assertFalse(f.isDone());
47 >        assertFalse(f.isCancelled());
48 >        assertTrue(f.toString().contains("[Not completed]"));
49 >        try {
50 >            assertNull(f.getNow(null));
51 >        } catch (Throwable fail) { threadUnexpectedException(fail); }
52 >        try {
53 >            f.get(0L, SECONDS);
54 >            shouldThrow();
55 >        }
56 >        catch (TimeoutException success) {}
57 >        catch (Throwable fail) { threadUnexpectedException(fail); }
58 >    }
59 >
60 >    <T> void checkCompletedNormally(CompletableFuture<T> f, T value) {
61 >        checkTimedGet(f, value);
62 >
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 >        long startTime = System.nanoTime();
80 >        long timeoutMillis = LONG_DELAY_MS;
81 >        try {
82 >            f.get(timeoutMillis, MILLISECONDS);
83 >            shouldThrow();
84 >        } catch (ExecutionException success) {
85 >            assertTrue(success.getCause() instanceof CFException);
86 >        } catch (Throwable fail) { threadUnexpectedException(fail); }
87 >        assertTrue(millisElapsedSince(startTime) < timeoutMillis/2);
88 >
89 >        try {
90 >            f.join();
91 >            shouldThrow();
92 >        } catch (CompletionException success) {
93 >            assertTrue(success.getCause() instanceof CFException);
94 >        }
95 >        try {
96 >            f.getNow(null);
97 >            shouldThrow();
98 >        } catch (CompletionException success) {
99 >            assertTrue(success.getCause() instanceof CFException);
100 >        }
101 >        try {
102 >            f.get();
103 >            shouldThrow();
104 >        } catch (ExecutionException success) {
105 >            assertTrue(success.getCause() instanceof CFException);
106 >        } catch (Throwable fail) { threadUnexpectedException(fail); }
107 >        assertTrue(f.isDone());
108 >        assertFalse(f.isCancelled());
109 >        assertTrue(f.toString().contains("[Completed exceptionally]"));
110 >    }
111 >
112 >    <U> void checkCompletedExceptionallyWithRootCause(CompletableFuture<U> f,
113 >                                                      Throwable ex) {
114 >        long startTime = System.nanoTime();
115 >        long timeoutMillis = LONG_DELAY_MS;
116 >        try {
117 >            f.get(timeoutMillis, MILLISECONDS);
118 >            shouldThrow();
119 >        } catch (ExecutionException success) {
120 >            assertSame(ex, success.getCause());
121 >        } catch (Throwable fail) { threadUnexpectedException(fail); }
122 >        assertTrue(millisElapsedSince(startTime) < timeoutMillis/2);
123 >
124 >        try {
125 >            f.join();
126 >            shouldThrow();
127 >        } catch (CompletionException success) {
128 >            assertSame(ex, success.getCause());
129 >        }
130 >        try {
131 >            f.getNow(null);
132 >            shouldThrow();
133 >        } catch (CompletionException success) {
134 >            assertSame(ex, success.getCause());
135 >        }
136 >        try {
137 >            f.get();
138 >            shouldThrow();
139 >        } catch (ExecutionException success) {
140 >            assertSame(ex, success.getCause());
141 >        } catch (Throwable fail) { threadUnexpectedException(fail); }
142 >
143 >        assertTrue(f.isDone());
144 >        assertFalse(f.isCancelled());
145 >        assertTrue(f.toString().contains("[Completed exceptionally]"));
146 >    }
147 >
148 >    <U> void checkCompletedWithWrappedException(CompletableFuture<U> f,
149 >                                                Throwable ex) {
150 >        checkCompletedExceptionallyWithRootCause(f, ex);
151 >        try {
152 >            CompletableFuture<Throwable> spy = f.handle
153 >                ((U u, Throwable t) -> t);
154 >            assertTrue(spy.join() instanceof CompletionException);
155 >            assertSame(ex, spy.join().getCause());
156 >        } catch (Throwable fail) { threadUnexpectedException(fail); }
157 >    }
158 >
159 >    <U> void checkCompletedExceptionally(CompletableFuture<U> f, Throwable ex) {
160 >        checkCompletedExceptionallyWithRootCause(f, ex);
161 >        try {
162 >            CompletableFuture<Throwable> spy = f.handle
163 >                ((U u, Throwable t) -> t);
164 >            assertSame(ex, spy.join());
165 >        } catch (Throwable fail) { threadUnexpectedException(fail); }
166 >    }
167 >
168 >    void checkCancelled(CompletableFuture<?> f) {
169 >        long startTime = System.nanoTime();
170 >        long timeoutMillis = LONG_DELAY_MS;
171 >        try {
172 >            f.get(timeoutMillis, MILLISECONDS);
173 >            shouldThrow();
174 >        } catch (CancellationException success) {
175 >        } catch (Throwable fail) { threadUnexpectedException(fail); }
176 >        assertTrue(millisElapsedSince(startTime) < timeoutMillis/2);
177 >
178 >        try {
179 >            f.join();
180 >            shouldThrow();
181 >        } catch (CancellationException success) {}
182 >        try {
183 >            f.getNow(null);
184 >            shouldThrow();
185 >        } catch (CancellationException success) {}
186 >        try {
187 >            f.get();
188 >            shouldThrow();
189 >        } catch (CancellationException success) {
190 >        } catch (Throwable fail) { threadUnexpectedException(fail); }
191 >        assertTrue(f.isDone());
192 >        assertTrue(f.isCompletedExceptionally());
193 >        assertTrue(f.isCancelled());
194 >        assertTrue(f.toString().contains("[Completed exceptionally]"));
195 >    }
196 >
197 >    void checkCompletedWithWrappedCancellationException(CompletableFuture<?> f) {
198 >        long startTime = System.nanoTime();
199 >        long timeoutMillis = LONG_DELAY_MS;
200 >        try {
201 >            f.get(timeoutMillis, MILLISECONDS);
202 >            shouldThrow();
203 >        } catch (ExecutionException success) {
204 >            assertTrue(success.getCause() instanceof CancellationException);
205 >        } catch (Throwable fail) { threadUnexpectedException(fail); }
206 >        assertTrue(millisElapsedSince(startTime) < timeoutMillis/2);
207 >
208 >        try {
209 >            f.join();
210 >            shouldThrow();
211 >        } catch (CompletionException success) {
212 >            assertTrue(success.getCause() instanceof CancellationException);
213 >        }
214 >        try {
215 >            f.getNow(null);
216 >            shouldThrow();
217 >        } catch (CompletionException success) {
218 >            assertTrue(success.getCause() instanceof CancellationException);
219 >        }
220 >        try {
221 >            f.get();
222 >            shouldThrow();
223 >        } catch (ExecutionException success) {
224 >            assertTrue(success.getCause() instanceof CancellationException);
225 >        } catch (Throwable fail) { threadUnexpectedException(fail); }
226 >        assertTrue(f.isDone());
227 >        assertFalse(f.isCancelled());
228 >        assertTrue(f.isCompletedExceptionally());
229 >        assertTrue(f.toString().contains("[Completed exceptionally]"));
230 >    }
231 >
232 >    /**
233 >     * A newly constructed CompletableFuture is incomplete, as indicated
234 >     * by methods isDone, isCancelled, and getNow
235 >     */
236 >    public void testConstructor() {
237 >        CompletableFuture<Integer> f = new CompletableFuture<>();
238 >        checkIncomplete(f);
239      }
240  
241 +    /**
242 +     * complete completes normally, as indicated by methods isDone,
243 +     * isCancelled, join, get, and getNow
244 +     */
245 +    public void testComplete() {
246 +        for (Integer v1 : new Integer[] { 1, null })
247 +    {
248 +        CompletableFuture<Integer> f = new CompletableFuture<>();
249 +        checkIncomplete(f);
250 +        assertTrue(f.complete(v1));
251 +        assertFalse(f.complete(v1));
252 +        checkCompletedNormally(f, v1);
253 +    }}
254 +
255 +    /**
256 +     * completeExceptionally completes exceptionally, as indicated by
257 +     * methods isDone, isCancelled, join, get, and getNow
258 +     */
259 +    public void testCompleteExceptionally() {
260 +        CompletableFuture<Integer> f = new CompletableFuture<>();
261 +        CFException ex = new CFException();
262 +        checkIncomplete(f);
263 +        f.completeExceptionally(ex);
264 +        checkCompletedExceptionally(f, ex);
265 +    }
266 +
267 +    /**
268 +     * cancel completes exceptionally and reports cancelled, as indicated by
269 +     * methods isDone, isCancelled, join, get, and getNow
270 +     */
271 +    public void testCancel() {
272 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
273 +    {
274 +        CompletableFuture<Integer> f = new CompletableFuture<>();
275 +        checkIncomplete(f);
276 +        assertTrue(f.cancel(true));
277 +        assertTrue(f.cancel(true));
278 +        checkCancelled(f);
279 +    }}
280 +
281 +    /**
282 +     * obtrudeValue forces completion with given value
283 +     */
284 +    public void testObtrudeValue() {
285 +        CompletableFuture<Integer> f = new CompletableFuture<>();
286 +        checkIncomplete(f);
287 +        assertTrue(f.complete(one));
288 +        checkCompletedNormally(f, one);
289 +        f.obtrudeValue(three);
290 +        checkCompletedNormally(f, three);
291 +        f.obtrudeValue(two);
292 +        checkCompletedNormally(f, two);
293 +        f = new CompletableFuture<>();
294 +        f.obtrudeValue(three);
295 +        checkCompletedNormally(f, three);
296 +        f.obtrudeValue(null);
297 +        checkCompletedNormally(f, null);
298 +        f = new CompletableFuture<>();
299 +        f.completeExceptionally(new CFException());
300 +        f.obtrudeValue(four);
301 +        checkCompletedNormally(f, four);
302 +    }
303 +
304 +    /**
305 +     * obtrudeException forces completion with given exception
306 +     */
307 +    public void testObtrudeException() {
308 +        for (Integer v1 : new Integer[] { 1, null })
309 +    {
310 +        CFException ex;
311 +        CompletableFuture<Integer> f;
312 +
313 +        f = new CompletableFuture<>();
314 +        assertTrue(f.complete(v1));
315 +        for (int i = 0; i < 2; i++) {
316 +            f.obtrudeException(ex = new CFException());
317 +            checkCompletedExceptionally(f, ex);
318 +        }
319 +
320 +        f = new CompletableFuture<>();
321 +        for (int i = 0; i < 2; i++) {
322 +            f.obtrudeException(ex = new CFException());
323 +            checkCompletedExceptionally(f, ex);
324 +        }
325 +
326 +        f = new CompletableFuture<>();
327 +        f.completeExceptionally(ex = new CFException());
328 +        f.obtrudeValue(v1);
329 +        checkCompletedNormally(f, v1);
330 +        f.obtrudeException(ex = new CFException());
331 +        checkCompletedExceptionally(f, ex);
332 +        f.completeExceptionally(new CFException());
333 +        checkCompletedExceptionally(f, ex);
334 +        assertFalse(f.complete(v1));
335 +        checkCompletedExceptionally(f, ex);
336 +    }}
337 +
338 +    /**
339 +     * getNumberOfDependents returns number of dependent tasks
340 +     */
341 +    public void testGetNumberOfDependents() {
342 +        for (ExecutionMode m : ExecutionMode.values())
343 +        for (Integer v1 : new Integer[] { 1, null })
344 +    {
345 +        CompletableFuture<Integer> f = new CompletableFuture<>();
346 +        assertEquals(0, f.getNumberOfDependents());
347 +        final CompletableFuture<Void> g = m.thenRun(f, new Noop(m));
348 +        assertEquals(1, f.getNumberOfDependents());
349 +        assertEquals(0, g.getNumberOfDependents());
350 +        final CompletableFuture<Void> h = m.thenRun(f, new Noop(m));
351 +        assertEquals(2, f.getNumberOfDependents());
352 +        assertEquals(0, h.getNumberOfDependents());
353 +        assertTrue(f.complete(v1));
354 +        checkCompletedNormally(g, null);
355 +        checkCompletedNormally(h, null);
356 +        assertEquals(0, f.getNumberOfDependents());
357 +        assertEquals(0, g.getNumberOfDependents());
358 +        assertEquals(0, h.getNumberOfDependents());
359 +    }}
360 +
361 +    /**
362 +     * toString indicates current completion state
363 +     */
364      public void testToString() {
365          CompletableFuture<String> f;
366  
367          f = new CompletableFuture<String>();
368          assertTrue(f.toString().contains("[Not completed]"));
369  
370 <        f.complete("foo");
370 >        assertTrue(f.complete("foo"));
371          assertTrue(f.toString().contains("[Completed normally]"));
372  
373          f = new CompletableFuture<String>();
374 <        f.completeExceptionally(new IndexOutOfBoundsException());
374 >        assertTrue(f.completeExceptionally(new IndexOutOfBoundsException()));
375          assertTrue(f.toString().contains("[Completed exceptionally]"));
376 +
377 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false }) {
378 +            f = new CompletableFuture<String>();
379 +            assertTrue(f.cancel(mayInterruptIfRunning));
380 +            assertTrue(f.toString().contains("[Completed exceptionally]"));
381 +        }
382 +    }
383 +
384 +    /**
385 +     * completedFuture returns a completed CompletableFuture with given value
386 +     */
387 +    public void testCompletedFuture() {
388 +        CompletableFuture<String> f = CompletableFuture.completedFuture("test");
389 +        checkCompletedNormally(f, "test");
390 +    }
391 +
392 +    abstract class CheckedAction {
393 +        int invocationCount = 0;
394 +        final ExecutionMode m;
395 +        CheckedAction(ExecutionMode m) { this.m = m; }
396 +        void invoked() {
397 +            m.checkExecutionMode();
398 +            assertEquals(0, invocationCount++);
399 +        }
400 +        void assertNotInvoked() { assertEquals(0, invocationCount); }
401 +        void assertInvoked() { assertEquals(1, invocationCount); }
402 +    }
403 +
404 +    abstract class CheckedIntegerAction extends CheckedAction {
405 +        Integer value;
406 +        CheckedIntegerAction(ExecutionMode m) { super(m); }
407 +        void assertValue(Integer expected) {
408 +            assertInvoked();
409 +            assertEquals(expected, value);
410 +        }
411 +    }
412 +
413 +    class IntegerSupplier extends CheckedAction
414 +        implements Supplier<Integer>
415 +    {
416 +        final Integer value;
417 +        IntegerSupplier(ExecutionMode m, Integer value) {
418 +            super(m);
419 +            this.value = value;
420 +        }
421 +        public Integer get() {
422 +            invoked();
423 +            return value;
424 +        }
425 +    }
426 +
427 +    // A function that handles and produces null values as well.
428 +    static Integer inc(Integer x) {
429 +        return (x == null) ? null : x + 1;
430 +    }
431 +
432 +    class NoopConsumer extends CheckedIntegerAction
433 +        implements Consumer<Integer>
434 +    {
435 +        NoopConsumer(ExecutionMode m) { super(m); }
436 +        public void accept(Integer x) {
437 +            invoked();
438 +            value = x;
439 +        }
440 +    }
441 +
442 +    class IncFunction extends CheckedIntegerAction
443 +        implements Function<Integer,Integer>
444 +    {
445 +        IncFunction(ExecutionMode m) { super(m); }
446 +        public Integer apply(Integer x) {
447 +            invoked();
448 +            return value = inc(x);
449 +        }
450 +    }
451 +
452 +    // Choose non-commutative actions for better coverage
453 +    // A non-commutative function that handles and produces null values as well.
454 +    static Integer subtract(Integer x, Integer y) {
455 +        return (x == null && y == null) ? null :
456 +            ((x == null) ? 42 : x.intValue())
457 +            - ((y == null) ? 99 : y.intValue());
458 +    }
459 +
460 +    class SubtractAction extends CheckedIntegerAction
461 +        implements BiConsumer<Integer, Integer>
462 +    {
463 +        SubtractAction(ExecutionMode m) { super(m); }
464 +        public void accept(Integer x, Integer y) {
465 +            invoked();
466 +            value = subtract(x, y);
467 +        }
468 +    }
469 +
470 +    class SubtractFunction extends CheckedIntegerAction
471 +        implements BiFunction<Integer, Integer, Integer>
472 +    {
473 +        SubtractFunction(ExecutionMode m) { super(m); }
474 +        public Integer apply(Integer x, Integer y) {
475 +            invoked();
476 +            return value = subtract(x, y);
477 +        }
478 +    }
479 +
480 +    class Noop extends CheckedAction implements Runnable {
481 +        Noop(ExecutionMode m) { super(m); }
482 +        public void run() {
483 +            invoked();
484 +        }
485 +    }
486 +
487 +    class FailingSupplier extends CheckedAction
488 +        implements Supplier<Integer>
489 +    {
490 +        FailingSupplier(ExecutionMode m) { super(m); }
491 +        public Integer get() {
492 +            invoked();
493 +            throw new CFException();
494 +        }
495 +    }
496 +
497 +    class FailingConsumer extends CheckedIntegerAction
498 +        implements Consumer<Integer>
499 +    {
500 +        FailingConsumer(ExecutionMode m) { super(m); }
501 +        public void accept(Integer x) {
502 +            invoked();
503 +            value = x;
504 +            throw new CFException();
505 +        }
506 +    }
507 +
508 +    class FailingBiConsumer extends CheckedIntegerAction
509 +        implements BiConsumer<Integer, Integer>
510 +    {
511 +        FailingBiConsumer(ExecutionMode m) { super(m); }
512 +        public void accept(Integer x, Integer y) {
513 +            invoked();
514 +            value = subtract(x, y);
515 +            throw new CFException();
516 +        }
517 +    }
518 +
519 +    class FailingFunction extends CheckedIntegerAction
520 +        implements Function<Integer, Integer>
521 +    {
522 +        FailingFunction(ExecutionMode m) { super(m); }
523 +        public Integer apply(Integer x) {
524 +            invoked();
525 +            value = x;
526 +            throw new CFException();
527 +        }
528 +    }
529 +
530 +    class FailingBiFunction extends CheckedIntegerAction
531 +        implements BiFunction<Integer, Integer, Integer>
532 +    {
533 +        FailingBiFunction(ExecutionMode m) { super(m); }
534 +        public Integer apply(Integer x, Integer y) {
535 +            invoked();
536 +            value = subtract(x, y);
537 +            throw new CFException();
538 +        }
539 +    }
540 +
541 +    class FailingRunnable extends CheckedAction implements Runnable {
542 +        FailingRunnable(ExecutionMode m) { super(m); }
543 +        public void run() {
544 +            invoked();
545 +            throw new CFException();
546 +        }
547 +    }
548 +
549 +
550 +    class CompletableFutureInc extends CheckedIntegerAction
551 +        implements Function<Integer, CompletableFuture<Integer>>
552 +    {
553 +        CompletableFutureInc(ExecutionMode m) { super(m); }
554 +        public CompletableFuture<Integer> apply(Integer x) {
555 +            invoked();
556 +            value = x;
557 +            CompletableFuture<Integer> f = new CompletableFuture<>();
558 +            assertTrue(f.complete(inc(x)));
559 +            return f;
560 +        }
561 +    }
562 +
563 +    class FailingCompletableFutureFunction extends CheckedIntegerAction
564 +        implements Function<Integer, CompletableFuture<Integer>>
565 +    {
566 +        FailingCompletableFutureFunction(ExecutionMode m) { super(m); }
567 +        public CompletableFuture<Integer> apply(Integer x) {
568 +            invoked();
569 +            value = x;
570 +            throw new CFException();
571 +        }
572      }
573 +
574 +    // Used for explicit executor tests
575 +    static final class ThreadExecutor implements Executor {
576 +        final AtomicInteger count = new AtomicInteger(0);
577 +        static final ThreadGroup tg = new ThreadGroup("ThreadExecutor");
578 +        static boolean startedCurrentThread() {
579 +            return Thread.currentThread().getThreadGroup() == tg;
580 +        }
581 +
582 +        public void execute(Runnable r) {
583 +            count.getAndIncrement();
584 +            new Thread(tg, r).start();
585 +        }
586 +    }
587 +
588 +    static final boolean defaultExecutorIsCommonPool
589 +        = ForkJoinPool.getCommonPoolParallelism() > 1;
590 +
591 +    /**
592 +     * Permits the testing of parallel code for the 3 different
593 +     * execution modes without copy/pasting all the test methods.
594 +     */
595 +    enum ExecutionMode {
596 +        SYNC {
597 +            public void checkExecutionMode() {
598 +                assertFalse(ThreadExecutor.startedCurrentThread());
599 +                assertNull(ForkJoinTask.getPool());
600 +            }
601 +            public CompletableFuture<Void> runAsync(Runnable a) {
602 +                throw new UnsupportedOperationException();
603 +            }
604 +            public <U> CompletableFuture<U> supplyAsync(Supplier<U> a) {
605 +                throw new UnsupportedOperationException();
606 +            }
607 +            public <T> CompletableFuture<Void> thenRun
608 +                (CompletableFuture<T> f, Runnable a) {
609 +                return f.thenRun(a);
610 +            }
611 +            public <T> CompletableFuture<Void> thenAccept
612 +                (CompletableFuture<T> f, Consumer<? super T> a) {
613 +                return f.thenAccept(a);
614 +            }
615 +            public <T,U> CompletableFuture<U> thenApply
616 +                (CompletableFuture<T> f, Function<? super T,U> a) {
617 +                return f.thenApply(a);
618 +            }
619 +            public <T,U> CompletableFuture<U> thenCompose
620 +                (CompletableFuture<T> f,
621 +                 Function<? super T,? extends CompletionStage<U>> a) {
622 +                return f.thenCompose(a);
623 +            }
624 +            public <T,U> CompletableFuture<U> handle
625 +                (CompletableFuture<T> f,
626 +                 BiFunction<? super T,Throwable,? extends U> a) {
627 +                return f.handle(a);
628 +            }
629 +            public <T> CompletableFuture<T> whenComplete
630 +                (CompletableFuture<T> f,
631 +                 BiConsumer<? super T,? super Throwable> a) {
632 +                return f.whenComplete(a);
633 +            }
634 +            public <T,U> CompletableFuture<Void> runAfterBoth
635 +                (CompletableFuture<T> f, CompletableFuture<U> g, Runnable a) {
636 +                return f.runAfterBoth(g, a);
637 +            }
638 +            public <T,U> CompletableFuture<Void> thenAcceptBoth
639 +                (CompletableFuture<T> f,
640 +                 CompletionStage<? extends U> g,
641 +                 BiConsumer<? super T,? super U> a) {
642 +                return f.thenAcceptBoth(g, a);
643 +            }
644 +            public <T,U,V> CompletableFuture<V> thenCombine
645 +                (CompletableFuture<T> f,
646 +                 CompletionStage<? extends U> g,
647 +                 BiFunction<? super T,? super U,? extends V> a) {
648 +                return f.thenCombine(g, a);
649 +            }
650 +            public <T> CompletableFuture<Void> runAfterEither
651 +                (CompletableFuture<T> f,
652 +                 CompletionStage<?> g,
653 +                 java.lang.Runnable a) {
654 +                return f.runAfterEither(g, a);
655 +            }
656 +            public <T> CompletableFuture<Void> acceptEither
657 +                (CompletableFuture<T> f,
658 +                 CompletionStage<? extends T> g,
659 +                 Consumer<? super T> a) {
660 +                return f.acceptEither(g, a);
661 +            }
662 +            public <T,U> CompletableFuture<U> applyToEither
663 +                (CompletableFuture<T> f,
664 +                 CompletionStage<? extends T> g,
665 +                 Function<? super T,U> a) {
666 +                return f.applyToEither(g, a);
667 +            }
668 +        },
669 +
670 +        ASYNC {
671 +            public void checkExecutionMode() {
672 +                assertEquals(defaultExecutorIsCommonPool,
673 +                             (ForkJoinPool.commonPool() == ForkJoinTask.getPool()));
674 +            }
675 +            public CompletableFuture<Void> runAsync(Runnable a) {
676 +                return CompletableFuture.runAsync(a);
677 +            }
678 +            public <U> CompletableFuture<U> supplyAsync(Supplier<U> a) {
679 +                return CompletableFuture.supplyAsync(a);
680 +            }
681 +            public <T> CompletableFuture<Void> thenRun
682 +                (CompletableFuture<T> f, Runnable a) {
683 +                return f.thenRunAsync(a);
684 +            }
685 +            public <T> CompletableFuture<Void> thenAccept
686 +                (CompletableFuture<T> f, Consumer<? super T> a) {
687 +                return f.thenAcceptAsync(a);
688 +            }
689 +            public <T,U> CompletableFuture<U> thenApply
690 +                (CompletableFuture<T> f, Function<? super T,U> a) {
691 +                return f.thenApplyAsync(a);
692 +            }
693 +            public <T,U> CompletableFuture<U> thenCompose
694 +                (CompletableFuture<T> f,
695 +                 Function<? super T,? extends CompletionStage<U>> a) {
696 +                return f.thenComposeAsync(a);
697 +            }
698 +            public <T,U> CompletableFuture<U> handle
699 +                (CompletableFuture<T> f,
700 +                 BiFunction<? super T,Throwable,? extends U> a) {
701 +                return f.handleAsync(a);
702 +            }
703 +            public <T> CompletableFuture<T> whenComplete
704 +                (CompletableFuture<T> f,
705 +                 BiConsumer<? super T,? super Throwable> a) {
706 +                return f.whenCompleteAsync(a);
707 +            }
708 +            public <T,U> CompletableFuture<Void> runAfterBoth
709 +                (CompletableFuture<T> f, CompletableFuture<U> g, Runnable a) {
710 +                return f.runAfterBothAsync(g, a);
711 +            }
712 +            public <T,U> CompletableFuture<Void> thenAcceptBoth
713 +                (CompletableFuture<T> f,
714 +                 CompletionStage<? extends U> g,
715 +                 BiConsumer<? super T,? super U> a) {
716 +                return f.thenAcceptBothAsync(g, a);
717 +            }
718 +            public <T,U,V> CompletableFuture<V> thenCombine
719 +                (CompletableFuture<T> f,
720 +                 CompletionStage<? extends U> g,
721 +                 BiFunction<? super T,? super U,? extends V> a) {
722 +                return f.thenCombineAsync(g, a);
723 +            }
724 +            public <T> CompletableFuture<Void> runAfterEither
725 +                (CompletableFuture<T> f,
726 +                 CompletionStage<?> g,
727 +                 java.lang.Runnable a) {
728 +                return f.runAfterEitherAsync(g, a);
729 +            }
730 +            public <T> CompletableFuture<Void> acceptEither
731 +                (CompletableFuture<T> f,
732 +                 CompletionStage<? extends T> g,
733 +                 Consumer<? super T> a) {
734 +                return f.acceptEitherAsync(g, a);
735 +            }
736 +            public <T,U> CompletableFuture<U> applyToEither
737 +                (CompletableFuture<T> f,
738 +                 CompletionStage<? extends T> g,
739 +                 Function<? super T,U> a) {
740 +                return f.applyToEitherAsync(g, a);
741 +            }
742 +        },
743 +
744 +        EXECUTOR {
745 +            public void checkExecutionMode() {
746 +                assertTrue(ThreadExecutor.startedCurrentThread());
747 +            }
748 +            public CompletableFuture<Void> runAsync(Runnable a) {
749 +                return CompletableFuture.runAsync(a, new ThreadExecutor());
750 +            }
751 +            public <U> CompletableFuture<U> supplyAsync(Supplier<U> a) {
752 +                return CompletableFuture.supplyAsync(a, new ThreadExecutor());
753 +            }
754 +            public <T> CompletableFuture<Void> thenRun
755 +                (CompletableFuture<T> f, Runnable a) {
756 +                return f.thenRunAsync(a, new ThreadExecutor());
757 +            }
758 +            public <T> CompletableFuture<Void> thenAccept
759 +                (CompletableFuture<T> f, Consumer<? super T> a) {
760 +                return f.thenAcceptAsync(a, new ThreadExecutor());
761 +            }
762 +            public <T,U> CompletableFuture<U> thenApply
763 +                (CompletableFuture<T> f, Function<? super T,U> a) {
764 +                return f.thenApplyAsync(a, new ThreadExecutor());
765 +            }
766 +            public <T,U> CompletableFuture<U> thenCompose
767 +                (CompletableFuture<T> f,
768 +                 Function<? super T,? extends CompletionStage<U>> a) {
769 +                return f.thenComposeAsync(a, new ThreadExecutor());
770 +            }
771 +            public <T,U> CompletableFuture<U> handle
772 +                (CompletableFuture<T> f,
773 +                 BiFunction<? super T,Throwable,? extends U> a) {
774 +                return f.handleAsync(a, new ThreadExecutor());
775 +            }
776 +            public <T> CompletableFuture<T> whenComplete
777 +                (CompletableFuture<T> f,
778 +                 BiConsumer<? super T,? super Throwable> a) {
779 +                return f.whenCompleteAsync(a, new ThreadExecutor());
780 +            }
781 +            public <T,U> CompletableFuture<Void> runAfterBoth
782 +                (CompletableFuture<T> f, CompletableFuture<U> g, Runnable a) {
783 +                return f.runAfterBothAsync(g, a, new ThreadExecutor());
784 +            }
785 +            public <T,U> CompletableFuture<Void> thenAcceptBoth
786 +                (CompletableFuture<T> f,
787 +                 CompletionStage<? extends U> g,
788 +                 BiConsumer<? super T,? super U> a) {
789 +                return f.thenAcceptBothAsync(g, a, new ThreadExecutor());
790 +            }
791 +            public <T,U,V> CompletableFuture<V> thenCombine
792 +                (CompletableFuture<T> f,
793 +                 CompletionStage<? extends U> g,
794 +                 BiFunction<? super T,? super U,? extends V> a) {
795 +                return f.thenCombineAsync(g, a, new ThreadExecutor());
796 +            }
797 +            public <T> CompletableFuture<Void> runAfterEither
798 +                (CompletableFuture<T> f,
799 +                 CompletionStage<?> g,
800 +                 java.lang.Runnable a) {
801 +                return f.runAfterEitherAsync(g, a, new ThreadExecutor());
802 +            }
803 +            public <T> CompletableFuture<Void> acceptEither
804 +                (CompletableFuture<T> f,
805 +                 CompletionStage<? extends T> g,
806 +                 Consumer<? super T> a) {
807 +                return f.acceptEitherAsync(g, a, new ThreadExecutor());
808 +            }
809 +            public <T,U> CompletableFuture<U> applyToEither
810 +                (CompletableFuture<T> f,
811 +                 CompletionStage<? extends T> g,
812 +                 Function<? super T,U> a) {
813 +                return f.applyToEitherAsync(g, a, new ThreadExecutor());
814 +            }
815 +        };
816 +
817 +        public abstract void checkExecutionMode();
818 +        public abstract CompletableFuture<Void> runAsync(Runnable a);
819 +        public abstract <U> CompletableFuture<U> supplyAsync(Supplier<U> a);
820 +        public abstract <T> CompletableFuture<Void> thenRun
821 +            (CompletableFuture<T> f, Runnable a);
822 +        public abstract <T> CompletableFuture<Void> thenAccept
823 +            (CompletableFuture<T> f, Consumer<? super T> a);
824 +        public abstract <T,U> CompletableFuture<U> thenApply
825 +            (CompletableFuture<T> f, Function<? super T,U> a);
826 +        public abstract <T,U> CompletableFuture<U> thenCompose
827 +            (CompletableFuture<T> f,
828 +             Function<? super T,? extends CompletionStage<U>> a);
829 +        public abstract <T,U> CompletableFuture<U> handle
830 +            (CompletableFuture<T> f,
831 +             BiFunction<? super T,Throwable,? extends U> a);
832 +        public abstract <T> CompletableFuture<T> whenComplete
833 +            (CompletableFuture<T> f,
834 +             BiConsumer<? super T,? super Throwable> a);
835 +        public abstract <T,U> CompletableFuture<Void> runAfterBoth
836 +            (CompletableFuture<T> f, CompletableFuture<U> g, Runnable a);
837 +        public abstract <T,U> CompletableFuture<Void> thenAcceptBoth
838 +            (CompletableFuture<T> f,
839 +             CompletionStage<? extends U> g,
840 +             BiConsumer<? super T,? super U> a);
841 +        public abstract <T,U,V> CompletableFuture<V> thenCombine
842 +            (CompletableFuture<T> f,
843 +             CompletionStage<? extends U> g,
844 +             BiFunction<? super T,? super U,? extends V> a);
845 +        public abstract <T> CompletableFuture<Void> runAfterEither
846 +            (CompletableFuture<T> f,
847 +             CompletionStage<?> g,
848 +             java.lang.Runnable a);
849 +        public abstract <T> CompletableFuture<Void> acceptEither
850 +            (CompletableFuture<T> f,
851 +             CompletionStage<? extends T> g,
852 +             Consumer<? super T> a);
853 +        public abstract <T,U> CompletableFuture<U> applyToEither
854 +            (CompletableFuture<T> f,
855 +             CompletionStage<? extends T> g,
856 +             Function<? super T,U> a);
857 +    }
858 +
859 +    /**
860 +     * exceptionally action is not invoked when source completes
861 +     * normally, and source result is propagated
862 +     */
863 +    public void testExceptionally_normalCompletion() {
864 +        for (boolean createIncomplete : new boolean[] { true, false })
865 +        for (Integer v1 : new Integer[] { 1, null })
866 +    {
867 +        final AtomicInteger a = new AtomicInteger(0);
868 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
869 +        if (!createIncomplete) assertTrue(f.complete(v1));
870 +        final CompletableFuture<Integer> g = f.exceptionally
871 +            ((Throwable t) -> {
872 +                // Should not be called
873 +                a.getAndIncrement();
874 +                throw new AssertionError();
875 +            });
876 +        if (createIncomplete) assertTrue(f.complete(v1));
877 +
878 +        checkCompletedNormally(g, v1);
879 +        checkCompletedNormally(f, v1);
880 +        assertEquals(0, a.get());
881 +    }}
882 +
883 +    /**
884 +     * exceptionally action completes with function value on source
885 +     * exception
886 +     */
887 +    public void testExceptionally_exceptionalCompletion() {
888 +        for (boolean createIncomplete : new boolean[] { true, false })
889 +        for (Integer v1 : new Integer[] { 1, null })
890 +    {
891 +        final AtomicInteger a = new AtomicInteger(0);
892 +        final CFException ex = new CFException();
893 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
894 +        if (!createIncomplete) f.completeExceptionally(ex);
895 +        final CompletableFuture<Integer> g = f.exceptionally
896 +            ((Throwable t) -> {
897 +                ExecutionMode.SYNC.checkExecutionMode();
898 +                threadAssertSame(t, ex);
899 +                a.getAndIncrement();
900 +                return v1;
901 +            });
902 +        if (createIncomplete) f.completeExceptionally(ex);
903 +
904 +        checkCompletedNormally(g, v1);
905 +        assertEquals(1, a.get());
906 +    }}
907 +
908 +    public void testExceptionally_exceptionalCompletionActionFailed() {
909 +        for (boolean createIncomplete : new boolean[] { true, false })
910 +        for (Integer v1 : new Integer[] { 1, null })
911 +    {
912 +        final AtomicInteger a = new AtomicInteger(0);
913 +        final CFException ex1 = new CFException();
914 +        final CFException ex2 = new CFException();
915 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
916 +        if (!createIncomplete) f.completeExceptionally(ex1);
917 +        final CompletableFuture<Integer> g = f.exceptionally
918 +            ((Throwable t) -> {
919 +                ExecutionMode.SYNC.checkExecutionMode();
920 +                threadAssertSame(t, ex1);
921 +                a.getAndIncrement();
922 +                throw ex2;
923 +            });
924 +        if (createIncomplete) f.completeExceptionally(ex1);
925 +
926 +        checkCompletedWithWrappedException(g, ex2);
927 +        assertEquals(1, a.get());
928 +    }}
929 +
930 +    /**
931 +     * whenComplete action executes on normal completion, propagating
932 +     * source result.
933 +     */
934 +    public void testWhenComplete_normalCompletion1() {
935 +        for (ExecutionMode m : ExecutionMode.values())
936 +        for (boolean createIncomplete : new boolean[] { true, false })
937 +        for (Integer v1 : new Integer[] { 1, null })
938 +    {
939 +        final AtomicInteger a = new AtomicInteger(0);
940 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
941 +        if (!createIncomplete) assertTrue(f.complete(v1));
942 +        final CompletableFuture<Integer> g = m.whenComplete
943 +            (f,
944 +             (Integer x, Throwable t) -> {
945 +                m.checkExecutionMode();
946 +                threadAssertSame(x, v1);
947 +                threadAssertNull(t);
948 +                a.getAndIncrement();
949 +            });
950 +        if (createIncomplete) assertTrue(f.complete(v1));
951 +
952 +        checkCompletedNormally(g, v1);
953 +        checkCompletedNormally(f, v1);
954 +        assertEquals(1, a.get());
955 +    }}
956 +
957 +    /**
958 +     * whenComplete action executes on exceptional completion, propagating
959 +     * source result.
960 +     */
961 +    public void testWhenComplete_exceptionalCompletion() {
962 +        for (ExecutionMode m : ExecutionMode.values())
963 +        for (boolean createIncomplete : new boolean[] { true, false })
964 +        for (Integer v1 : new Integer[] { 1, null })
965 +    {
966 +        final AtomicInteger a = new AtomicInteger(0);
967 +        final CFException ex = new CFException();
968 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
969 +        if (!createIncomplete) f.completeExceptionally(ex);
970 +        final CompletableFuture<Integer> g = m.whenComplete
971 +            (f,
972 +             (Integer x, Throwable t) -> {
973 +                m.checkExecutionMode();
974 +                threadAssertNull(x);
975 +                threadAssertSame(t, ex);
976 +                a.getAndIncrement();
977 +            });
978 +        if (createIncomplete) f.completeExceptionally(ex);
979 +
980 +        checkCompletedWithWrappedException(g, ex);
981 +        checkCompletedExceptionally(f, ex);
982 +        assertEquals(1, a.get());
983 +    }}
984 +
985 +    /**
986 +     * whenComplete action executes on cancelled source, propagating
987 +     * CancellationException.
988 +     */
989 +    public void testWhenComplete_sourceCancelled() {
990 +        for (ExecutionMode m : ExecutionMode.values())
991 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
992 +        for (boolean createIncomplete : new boolean[] { true, false })
993 +    {
994 +        final AtomicInteger a = new AtomicInteger(0);
995 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
996 +        if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
997 +        final CompletableFuture<Integer> g = m.whenComplete
998 +            (f,
999 +             (Integer x, Throwable t) -> {
1000 +                m.checkExecutionMode();
1001 +                threadAssertNull(x);
1002 +                threadAssertTrue(t instanceof CancellationException);
1003 +                a.getAndIncrement();
1004 +            });
1005 +        if (createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
1006 +
1007 +        checkCompletedWithWrappedCancellationException(g);
1008 +        checkCancelled(f);
1009 +        assertEquals(1, a.get());
1010 +    }}
1011 +
1012 +    /**
1013 +     * If a whenComplete action throws an exception when triggered by
1014 +     * a normal completion, it completes exceptionally
1015 +     */
1016 +    public void testWhenComplete_actionFailed() {
1017 +        for (boolean createIncomplete : new boolean[] { true, false })
1018 +        for (ExecutionMode m : ExecutionMode.values())
1019 +        for (Integer v1 : new Integer[] { 1, null })
1020 +    {
1021 +        final AtomicInteger a = new AtomicInteger(0);
1022 +        final CFException ex = new CFException();
1023 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1024 +        if (!createIncomplete) assertTrue(f.complete(v1));
1025 +        final CompletableFuture<Integer> g = m.whenComplete
1026 +            (f,
1027 +             (Integer x, Throwable t) -> {
1028 +                m.checkExecutionMode();
1029 +                threadAssertSame(x, v1);
1030 +                threadAssertNull(t);
1031 +                a.getAndIncrement();
1032 +                throw ex;
1033 +            });
1034 +        if (createIncomplete) assertTrue(f.complete(v1));
1035 +
1036 +        checkCompletedWithWrappedException(g, ex);
1037 +        checkCompletedNormally(f, v1);
1038 +        assertEquals(1, a.get());
1039 +    }}
1040 +
1041 +    /**
1042 +     * If a whenComplete action throws an exception when triggered by
1043 +     * a source completion that also throws an exception, the source
1044 +     * exception takes precedence.
1045 +     */
1046 +    public void testWhenComplete_actionFailedSourceFailed() {
1047 +        for (boolean createIncomplete : new boolean[] { true, false })
1048 +        for (ExecutionMode m : ExecutionMode.values())
1049 +        for (Integer v1 : new Integer[] { 1, null })
1050 +    {
1051 +        final AtomicInteger a = new AtomicInteger(0);
1052 +        final CFException ex1 = new CFException();
1053 +        final CFException ex2 = new CFException();
1054 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1055 +
1056 +        if (!createIncomplete) f.completeExceptionally(ex1);
1057 +        final CompletableFuture<Integer> g = m.whenComplete
1058 +            (f,
1059 +             (Integer x, Throwable t) -> {
1060 +                m.checkExecutionMode();
1061 +                threadAssertSame(t, ex1);
1062 +                threadAssertNull(x);
1063 +                a.getAndIncrement();
1064 +                throw ex2;
1065 +            });
1066 +        if (createIncomplete) f.completeExceptionally(ex1);
1067 +
1068 +        checkCompletedWithWrappedException(g, ex1);
1069 +        checkCompletedExceptionally(f, ex1);
1070 +        assertEquals(1, a.get());
1071 +    }}
1072 +
1073 +    /**
1074 +     * handle action completes normally with function value on normal
1075 +     * completion of source
1076 +     */
1077 +    public void testHandle_normalCompletion() {
1078 +        for (ExecutionMode m : ExecutionMode.values())
1079 +        for (boolean createIncomplete : new boolean[] { true, false })
1080 +        for (Integer v1 : new Integer[] { 1, null })
1081 +    {
1082 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1083 +        final AtomicInteger a = new AtomicInteger(0);
1084 +        if (!createIncomplete) assertTrue(f.complete(v1));
1085 +        final CompletableFuture<Integer> g = m.handle
1086 +            (f,
1087 +             (Integer x, Throwable t) -> {
1088 +                m.checkExecutionMode();
1089 +                threadAssertSame(x, v1);
1090 +                threadAssertNull(t);
1091 +                a.getAndIncrement();
1092 +                return inc(v1);
1093 +            });
1094 +        if (createIncomplete) assertTrue(f.complete(v1));
1095 +
1096 +        checkCompletedNormally(g, inc(v1));
1097 +        checkCompletedNormally(f, v1);
1098 +        assertEquals(1, a.get());
1099 +    }}
1100 +
1101 +    /**
1102 +     * handle action completes normally with function value on
1103 +     * exceptional completion of source
1104 +     */
1105 +    public void testHandle_exceptionalCompletion() {
1106 +        for (ExecutionMode m : ExecutionMode.values())
1107 +        for (boolean createIncomplete : new boolean[] { true, false })
1108 +        for (Integer v1 : new Integer[] { 1, null })
1109 +    {
1110 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1111 +        final AtomicInteger a = new AtomicInteger(0);
1112 +        final CFException ex = new CFException();
1113 +        if (!createIncomplete) f.completeExceptionally(ex);
1114 +        final CompletableFuture<Integer> g = m.handle
1115 +            (f,
1116 +             (Integer x, Throwable t) -> {
1117 +                m.checkExecutionMode();
1118 +                threadAssertNull(x);
1119 +                threadAssertSame(t, ex);
1120 +                a.getAndIncrement();
1121 +                return v1;
1122 +            });
1123 +        if (createIncomplete) f.completeExceptionally(ex);
1124 +
1125 +        checkCompletedNormally(g, v1);
1126 +        checkCompletedExceptionally(f, ex);
1127 +        assertEquals(1, a.get());
1128 +    }}
1129 +
1130 +    /**
1131 +     * handle action completes normally with function value on
1132 +     * cancelled source
1133 +     */
1134 +    public void testHandle_sourceCancelled() {
1135 +        for (ExecutionMode m : ExecutionMode.values())
1136 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1137 +        for (boolean createIncomplete : new boolean[] { true, false })
1138 +        for (Integer v1 : new Integer[] { 1, null })
1139 +    {
1140 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1141 +        final AtomicInteger a = new AtomicInteger(0);
1142 +        if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
1143 +        final CompletableFuture<Integer> g = m.handle
1144 +            (f,
1145 +             (Integer x, Throwable t) -> {
1146 +                m.checkExecutionMode();
1147 +                threadAssertNull(x);
1148 +                threadAssertTrue(t instanceof CancellationException);
1149 +                a.getAndIncrement();
1150 +                return v1;
1151 +            });
1152 +        if (createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
1153 +
1154 +        checkCompletedNormally(g, v1);
1155 +        checkCancelled(f);
1156 +        assertEquals(1, a.get());
1157 +    }}
1158 +
1159 +    /**
1160 +     * handle result completes exceptionally if action does
1161 +     */
1162 +    public void testHandle_sourceFailedActionFailed() {
1163 +        for (ExecutionMode m : ExecutionMode.values())
1164 +        for (boolean createIncomplete : new boolean[] { true, false })
1165 +    {
1166 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1167 +        final AtomicInteger a = new AtomicInteger(0);
1168 +        final CFException ex1 = new CFException();
1169 +        final CFException ex2 = new CFException();
1170 +        if (!createIncomplete) f.completeExceptionally(ex1);
1171 +        final CompletableFuture<Integer> g = m.handle
1172 +            (f,
1173 +             (Integer x, Throwable t) -> {
1174 +                m.checkExecutionMode();
1175 +                threadAssertNull(x);
1176 +                threadAssertSame(ex1, t);
1177 +                a.getAndIncrement();
1178 +                throw ex2;
1179 +            });
1180 +        if (createIncomplete) f.completeExceptionally(ex1);
1181 +
1182 +        checkCompletedWithWrappedException(g, ex2);
1183 +        checkCompletedExceptionally(f, ex1);
1184 +        assertEquals(1, a.get());
1185 +    }}
1186 +
1187 +    public void testHandle_sourceCompletedNormallyActionFailed() {
1188 +        for (ExecutionMode m : ExecutionMode.values())
1189 +        for (boolean createIncomplete : new boolean[] { true, false })
1190 +        for (Integer v1 : new Integer[] { 1, null })
1191 +    {
1192 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1193 +        final AtomicInteger a = new AtomicInteger(0);
1194 +        final CFException ex = new CFException();
1195 +        if (!createIncomplete) assertTrue(f.complete(v1));
1196 +        final CompletableFuture<Integer> g = m.handle
1197 +            (f,
1198 +             (Integer x, Throwable t) -> {
1199 +                m.checkExecutionMode();
1200 +                threadAssertSame(x, v1);
1201 +                threadAssertNull(t);
1202 +                a.getAndIncrement();
1203 +                throw ex;
1204 +            });
1205 +        if (createIncomplete) assertTrue(f.complete(v1));
1206 +
1207 +        checkCompletedWithWrappedException(g, ex);
1208 +        checkCompletedNormally(f, v1);
1209 +        assertEquals(1, a.get());
1210 +    }}
1211 +
1212 +    /**
1213 +     * runAsync completes after running Runnable
1214 +     */
1215 +    public void testRunAsync_normalCompletion() {
1216 +        ExecutionMode[] executionModes = {
1217 +            ExecutionMode.ASYNC,
1218 +            ExecutionMode.EXECUTOR,
1219 +        };
1220 +        for (ExecutionMode m : executionModes)
1221 +    {
1222 +        final Noop r = new Noop(m);
1223 +        final CompletableFuture<Void> f = m.runAsync(r);
1224 +        assertNull(f.join());
1225 +        checkCompletedNormally(f, null);
1226 +        r.assertInvoked();
1227 +    }}
1228 +
1229 +    /**
1230 +     * failing runAsync completes exceptionally after running Runnable
1231 +     */
1232 +    public void testRunAsync_exceptionalCompletion() {
1233 +        ExecutionMode[] executionModes = {
1234 +            ExecutionMode.ASYNC,
1235 +            ExecutionMode.EXECUTOR,
1236 +        };
1237 +        for (ExecutionMode m : executionModes)
1238 +    {
1239 +        final FailingRunnable r = new FailingRunnable(m);
1240 +        final CompletableFuture<Void> f = m.runAsync(r);
1241 +        checkCompletedWithWrappedCFException(f);
1242 +        r.assertInvoked();
1243 +    }}
1244 +
1245 +    /**
1246 +     * supplyAsync completes with result of supplier
1247 +     */
1248 +    public void testSupplyAsync_normalCompletion() {
1249 +        ExecutionMode[] executionModes = {
1250 +            ExecutionMode.ASYNC,
1251 +            ExecutionMode.EXECUTOR,
1252 +        };
1253 +        for (ExecutionMode m : executionModes)
1254 +        for (Integer v1 : new Integer[] { 1, null })
1255 +    {
1256 +        final IntegerSupplier r = new IntegerSupplier(m, v1);
1257 +        final CompletableFuture<Integer> f = m.supplyAsync(r);
1258 +        assertSame(v1, f.join());
1259 +        checkCompletedNormally(f, v1);
1260 +        r.assertInvoked();
1261 +    }}
1262 +
1263 +    /**
1264 +     * Failing supplyAsync completes exceptionally
1265 +     */
1266 +    public void testSupplyAsync_exceptionalCompletion() {
1267 +        ExecutionMode[] executionModes = {
1268 +            ExecutionMode.ASYNC,
1269 +            ExecutionMode.EXECUTOR,
1270 +        };
1271 +        for (ExecutionMode m : executionModes)
1272 +    {
1273 +        FailingSupplier r = new FailingSupplier(m);
1274 +        CompletableFuture<Integer> f = m.supplyAsync(r);
1275 +        checkCompletedWithWrappedCFException(f);
1276 +        r.assertInvoked();
1277 +    }}
1278 +
1279 +    // seq completion methods
1280 +
1281 +    /**
1282 +     * thenRun result completes normally after normal completion of source
1283 +     */
1284 +    public void testThenRun_normalCompletion() {
1285 +        for (ExecutionMode m : ExecutionMode.values())
1286 +        for (Integer v1 : new Integer[] { 1, null })
1287 +    {
1288 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1289 +        final Noop[] rs = new Noop[6];
1290 +        for (int i = 0; i < rs.length; i++) rs[i] = new Noop(m);
1291 +
1292 +        final CompletableFuture<Void> h0 = m.thenRun(f, rs[0]);
1293 +        final CompletableFuture<Void> h1 = m.runAfterBoth(f, f, rs[1]);
1294 +        final CompletableFuture<Void> h2 = m.runAfterEither(f, f, rs[2]);
1295 +        checkIncomplete(h0);
1296 +        checkIncomplete(h1);
1297 +        checkIncomplete(h2);
1298 +        assertTrue(f.complete(v1));
1299 +        final CompletableFuture<Void> h3 = m.thenRun(f, rs[3]);
1300 +        final CompletableFuture<Void> h4 = m.runAfterBoth(f, f, rs[4]);
1301 +        final CompletableFuture<Void> h5 = m.runAfterEither(f, f, rs[5]);
1302 +
1303 +        checkCompletedNormally(h0, null);
1304 +        checkCompletedNormally(h1, null);
1305 +        checkCompletedNormally(h2, null);
1306 +        checkCompletedNormally(h3, null);
1307 +        checkCompletedNormally(h4, null);
1308 +        checkCompletedNormally(h5, null);
1309 +        checkCompletedNormally(f, v1);
1310 +        for (Noop r : rs) r.assertInvoked();
1311 +    }}
1312 +
1313 +    /**
1314 +     * thenRun result completes exceptionally after exceptional
1315 +     * completion of source
1316 +     */
1317 +    public void testThenRun_exceptionalCompletion() {
1318 +        for (ExecutionMode m : ExecutionMode.values())
1319 +    {
1320 +        final CFException ex = new CFException();
1321 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1322 +        final Noop[] rs = new Noop[6];
1323 +        for (int i = 0; i < rs.length; i++) rs[i] = new Noop(m);
1324 +
1325 +        final CompletableFuture<Void> h0 = m.thenRun(f, rs[0]);
1326 +        final CompletableFuture<Void> h1 = m.runAfterBoth(f, f, rs[1]);
1327 +        final CompletableFuture<Void> h2 = m.runAfterEither(f, f, rs[2]);
1328 +        checkIncomplete(h0);
1329 +        checkIncomplete(h1);
1330 +        checkIncomplete(h2);
1331 +        assertTrue(f.completeExceptionally(ex));
1332 +        final CompletableFuture<Void> h3 = m.thenRun(f, rs[3]);
1333 +        final CompletableFuture<Void> h4 = m.runAfterBoth(f, f, rs[4]);
1334 +        final CompletableFuture<Void> h5 = m.runAfterEither(f, f, rs[5]);
1335 +
1336 +        checkCompletedWithWrappedException(h0, ex);
1337 +        checkCompletedWithWrappedException(h1, ex);
1338 +        checkCompletedWithWrappedException(h2, ex);
1339 +        checkCompletedWithWrappedException(h3, ex);
1340 +        checkCompletedWithWrappedException(h4, ex);
1341 +        checkCompletedWithWrappedException(h5, ex);
1342 +        checkCompletedExceptionally(f, ex);
1343 +        for (Noop r : rs) r.assertNotInvoked();
1344 +    }}
1345 +
1346 +    /**
1347 +     * thenRun result completes exceptionally if source cancelled
1348 +     */
1349 +    public void testThenRun_sourceCancelled() {
1350 +        for (ExecutionMode m : ExecutionMode.values())
1351 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1352 +    {
1353 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1354 +        final Noop[] rs = new Noop[6];
1355 +        for (int i = 0; i < rs.length; i++) rs[i] = new Noop(m);
1356 +
1357 +        final CompletableFuture<Void> h0 = m.thenRun(f, rs[0]);
1358 +        final CompletableFuture<Void> h1 = m.runAfterBoth(f, f, rs[1]);
1359 +        final CompletableFuture<Void> h2 = m.runAfterEither(f, f, rs[2]);
1360 +        checkIncomplete(h0);
1361 +        checkIncomplete(h1);
1362 +        checkIncomplete(h2);
1363 +        assertTrue(f.cancel(mayInterruptIfRunning));
1364 +        final CompletableFuture<Void> h3 = m.thenRun(f, rs[3]);
1365 +        final CompletableFuture<Void> h4 = m.runAfterBoth(f, f, rs[4]);
1366 +        final CompletableFuture<Void> h5 = m.runAfterEither(f, f, rs[5]);
1367 +
1368 +        checkCompletedWithWrappedCancellationException(h0);
1369 +        checkCompletedWithWrappedCancellationException(h1);
1370 +        checkCompletedWithWrappedCancellationException(h2);
1371 +        checkCompletedWithWrappedCancellationException(h3);
1372 +        checkCompletedWithWrappedCancellationException(h4);
1373 +        checkCompletedWithWrappedCancellationException(h5);
1374 +        checkCancelled(f);
1375 +        for (Noop r : rs) r.assertNotInvoked();
1376 +    }}
1377 +
1378 +    /**
1379 +     * thenRun result completes exceptionally if action does
1380 +     */
1381 +    public void testThenRun_actionFailed() {
1382 +        for (ExecutionMode m : ExecutionMode.values())
1383 +        for (Integer v1 : new Integer[] { 1, null })
1384 +    {
1385 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1386 +        final FailingRunnable[] rs = new FailingRunnable[6];
1387 +        for (int i = 0; i < rs.length; i++) rs[i] = new FailingRunnable(m);
1388 +
1389 +        final CompletableFuture<Void> h0 = m.thenRun(f, rs[0]);
1390 +        final CompletableFuture<Void> h1 = m.runAfterBoth(f, f, rs[1]);
1391 +        final CompletableFuture<Void> h2 = m.runAfterEither(f, f, rs[2]);
1392 +        assertTrue(f.complete(v1));
1393 +        final CompletableFuture<Void> h3 = m.thenRun(f, rs[3]);
1394 +        final CompletableFuture<Void> h4 = m.runAfterBoth(f, f, rs[4]);
1395 +        final CompletableFuture<Void> h5 = m.runAfterEither(f, f, rs[5]);
1396 +
1397 +        checkCompletedWithWrappedCFException(h0);
1398 +        checkCompletedWithWrappedCFException(h1);
1399 +        checkCompletedWithWrappedCFException(h2);
1400 +        checkCompletedWithWrappedCFException(h3);
1401 +        checkCompletedWithWrappedCFException(h4);
1402 +        checkCompletedWithWrappedCFException(h5);
1403 +        checkCompletedNormally(f, v1);
1404 +    }}
1405 +
1406 +    /**
1407 +     * thenApply result completes normally after normal completion of source
1408 +     */
1409 +    public void testThenApply_normalCompletion() {
1410 +        for (ExecutionMode m : ExecutionMode.values())
1411 +        for (Integer v1 : new Integer[] { 1, null })
1412 +    {
1413 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1414 +        final IncFunction[] rs = new IncFunction[4];
1415 +        for (int i = 0; i < rs.length; i++) rs[i] = new IncFunction(m);
1416 +
1417 +        final CompletableFuture<Integer> h0 = m.thenApply(f, rs[0]);
1418 +        final CompletableFuture<Integer> h1 = m.applyToEither(f, f, rs[1]);
1419 +        checkIncomplete(h0);
1420 +        checkIncomplete(h1);
1421 +        assertTrue(f.complete(v1));
1422 +        final CompletableFuture<Integer> h2 = m.thenApply(f, rs[2]);
1423 +        final CompletableFuture<Integer> h3 = m.applyToEither(f, f, rs[3]);
1424 +
1425 +        checkCompletedNormally(h0, inc(v1));
1426 +        checkCompletedNormally(h1, inc(v1));
1427 +        checkCompletedNormally(h2, inc(v1));
1428 +        checkCompletedNormally(h3, inc(v1));
1429 +        checkCompletedNormally(f, v1);
1430 +        for (IncFunction r : rs) r.assertValue(inc(v1));
1431 +    }}
1432 +
1433 +    /**
1434 +     * thenApply result completes exceptionally after exceptional
1435 +     * completion of source
1436 +     */
1437 +    public void testThenApply_exceptionalCompletion() {
1438 +        for (ExecutionMode m : ExecutionMode.values())
1439 +    {
1440 +        final CFException ex = new CFException();
1441 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1442 +        final IncFunction[] rs = new IncFunction[4];
1443 +        for (int i = 0; i < rs.length; i++) rs[i] = new IncFunction(m);
1444 +
1445 +        final CompletableFuture<Integer> h0 = m.thenApply(f, rs[0]);
1446 +        final CompletableFuture<Integer> h1 = m.applyToEither(f, f, rs[1]);
1447 +        assertTrue(f.completeExceptionally(ex));
1448 +        final CompletableFuture<Integer> h2 = m.thenApply(f, rs[2]);
1449 +        final CompletableFuture<Integer> h3 = m.applyToEither(f, f, rs[3]);
1450 +
1451 +        checkCompletedWithWrappedException(h0, ex);
1452 +        checkCompletedWithWrappedException(h1, ex);
1453 +        checkCompletedWithWrappedException(h2, ex);
1454 +        checkCompletedWithWrappedException(h3, ex);
1455 +        checkCompletedExceptionally(f, ex);
1456 +        for (IncFunction r : rs) r.assertNotInvoked();
1457 +    }}
1458 +
1459 +    /**
1460 +     * thenApply result completes exceptionally if source cancelled
1461 +     */
1462 +    public void testThenApply_sourceCancelled() {
1463 +        for (ExecutionMode m : ExecutionMode.values())
1464 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1465 +    {
1466 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1467 +        final IncFunction[] rs = new IncFunction[4];
1468 +        for (int i = 0; i < rs.length; i++) rs[i] = new IncFunction(m);
1469 +
1470 +        final CompletableFuture<Integer> h0 = m.thenApply(f, rs[0]);
1471 +        final CompletableFuture<Integer> h1 = m.applyToEither(f, f, rs[1]);
1472 +        assertTrue(f.cancel(mayInterruptIfRunning));
1473 +        final CompletableFuture<Integer> h2 = m.thenApply(f, rs[2]);
1474 +        final CompletableFuture<Integer> h3 = m.applyToEither(f, f, rs[3]);
1475 +
1476 +        checkCompletedWithWrappedCancellationException(h0);
1477 +        checkCompletedWithWrappedCancellationException(h1);
1478 +        checkCompletedWithWrappedCancellationException(h2);
1479 +        checkCompletedWithWrappedCancellationException(h3);
1480 +        checkCancelled(f);
1481 +        for (IncFunction r : rs) r.assertNotInvoked();
1482 +    }}
1483 +
1484 +    /**
1485 +     * thenApply result completes exceptionally if action does
1486 +     */
1487 +    public void testThenApply_actionFailed() {
1488 +        for (ExecutionMode m : ExecutionMode.values())
1489 +        for (Integer v1 : new Integer[] { 1, null })
1490 +    {
1491 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1492 +        final FailingFunction[] rs = new FailingFunction[4];
1493 +        for (int i = 0; i < rs.length; i++) rs[i] = new FailingFunction(m);
1494 +
1495 +        final CompletableFuture<Integer> h0 = m.thenApply(f, rs[0]);
1496 +        final CompletableFuture<Integer> h1 = m.applyToEither(f, f, rs[1]);
1497 +        assertTrue(f.complete(v1));
1498 +        final CompletableFuture<Integer> h2 = m.thenApply(f, rs[2]);
1499 +        final CompletableFuture<Integer> h3 = m.applyToEither(f, f, rs[3]);
1500 +
1501 +        checkCompletedWithWrappedCFException(h0);
1502 +        checkCompletedWithWrappedCFException(h1);
1503 +        checkCompletedWithWrappedCFException(h2);
1504 +        checkCompletedWithWrappedCFException(h3);
1505 +        checkCompletedNormally(f, v1);
1506 +    }}
1507 +
1508 +    /**
1509 +     * thenAccept result completes normally after normal completion of source
1510 +     */
1511 +    public void testThenAccept_normalCompletion() {
1512 +        for (ExecutionMode m : ExecutionMode.values())
1513 +        for (Integer v1 : new Integer[] { 1, null })
1514 +    {
1515 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1516 +        final NoopConsumer[] rs = new NoopConsumer[4];
1517 +        for (int i = 0; i < rs.length; i++) rs[i] = new NoopConsumer(m);
1518 +
1519 +        final CompletableFuture<Void> h0 = m.thenAccept(f, rs[0]);
1520 +        final CompletableFuture<Void> h1 = m.acceptEither(f, f, rs[1]);
1521 +        checkIncomplete(h0);
1522 +        checkIncomplete(h1);
1523 +        assertTrue(f.complete(v1));
1524 +        final CompletableFuture<Void> h2 = m.thenAccept(f, rs[2]);
1525 +        final CompletableFuture<Void> h3 = m.acceptEither(f, f, rs[3]);
1526 +
1527 +        checkCompletedNormally(h0, null);
1528 +        checkCompletedNormally(h1, null);
1529 +        checkCompletedNormally(h2, null);
1530 +        checkCompletedNormally(h3, null);
1531 +        checkCompletedNormally(f, v1);
1532 +        for (NoopConsumer r : rs) r.assertValue(v1);
1533 +    }}
1534 +
1535 +    /**
1536 +     * thenAccept result completes exceptionally after exceptional
1537 +     * completion of source
1538 +     */
1539 +    public void testThenAccept_exceptionalCompletion() {
1540 +        for (ExecutionMode m : ExecutionMode.values())
1541 +    {
1542 +        final CFException ex = new CFException();
1543 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1544 +        final NoopConsumer[] rs = new NoopConsumer[4];
1545 +        for (int i = 0; i < rs.length; i++) rs[i] = new NoopConsumer(m);
1546 +
1547 +        final CompletableFuture<Void> h0 = m.thenAccept(f, rs[0]);
1548 +        final CompletableFuture<Void> h1 = m.acceptEither(f, f, rs[1]);
1549 +        assertTrue(f.completeExceptionally(ex));
1550 +        final CompletableFuture<Void> h2 = m.thenAccept(f, rs[2]);
1551 +        final CompletableFuture<Void> h3 = m.acceptEither(f, f, rs[3]);
1552 +
1553 +        checkCompletedWithWrappedException(h0, ex);
1554 +        checkCompletedWithWrappedException(h1, ex);
1555 +        checkCompletedWithWrappedException(h2, ex);
1556 +        checkCompletedWithWrappedException(h3, ex);
1557 +        checkCompletedExceptionally(f, ex);
1558 +        for (NoopConsumer r : rs) r.assertNotInvoked();
1559 +    }}
1560 +
1561 +    /**
1562 +     * thenAccept result completes exceptionally if source cancelled
1563 +     */
1564 +    public void testThenAccept_sourceCancelled() {
1565 +        for (ExecutionMode m : ExecutionMode.values())
1566 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1567 +    {
1568 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1569 +        final NoopConsumer[] rs = new NoopConsumer[4];
1570 +        for (int i = 0; i < rs.length; i++) rs[i] = new NoopConsumer(m);
1571 +
1572 +        final CompletableFuture<Void> h0 = m.thenAccept(f, rs[0]);
1573 +        final CompletableFuture<Void> h1 = m.acceptEither(f, f, rs[1]);
1574 +        assertTrue(f.cancel(mayInterruptIfRunning));
1575 +        final CompletableFuture<Void> h2 = m.thenAccept(f, rs[2]);
1576 +        final CompletableFuture<Void> h3 = m.acceptEither(f, f, rs[3]);
1577 +
1578 +        checkCompletedWithWrappedCancellationException(h0);
1579 +        checkCompletedWithWrappedCancellationException(h1);
1580 +        checkCompletedWithWrappedCancellationException(h2);
1581 +        checkCompletedWithWrappedCancellationException(h3);
1582 +        checkCancelled(f);
1583 +        for (NoopConsumer r : rs) r.assertNotInvoked();
1584 +    }}
1585 +
1586 +    /**
1587 +     * thenAccept result completes exceptionally if action does
1588 +     */
1589 +    public void testThenAccept_actionFailed() {
1590 +        for (ExecutionMode m : ExecutionMode.values())
1591 +        for (Integer v1 : new Integer[] { 1, null })
1592 +    {
1593 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1594 +        final FailingConsumer[] rs = new FailingConsumer[4];
1595 +        for (int i = 0; i < rs.length; i++) rs[i] = new FailingConsumer(m);
1596 +
1597 +        final CompletableFuture<Void> h0 = m.thenAccept(f, rs[0]);
1598 +        final CompletableFuture<Void> h1 = m.acceptEither(f, f, rs[1]);
1599 +        assertTrue(f.complete(v1));
1600 +        final CompletableFuture<Void> h2 = m.thenAccept(f, rs[2]);
1601 +        final CompletableFuture<Void> h3 = m.acceptEither(f, f, rs[3]);
1602 +
1603 +        checkCompletedWithWrappedCFException(h0);
1604 +        checkCompletedWithWrappedCFException(h1);
1605 +        checkCompletedWithWrappedCFException(h2);
1606 +        checkCompletedWithWrappedCFException(h3);
1607 +        checkCompletedNormally(f, v1);
1608 +    }}
1609 +
1610 +    /**
1611 +     * thenCombine result completes normally after normal completion
1612 +     * of sources
1613 +     */
1614 +    public void testThenCombine_normalCompletion() {
1615 +        for (ExecutionMode m : ExecutionMode.values())
1616 +        for (boolean fFirst : new boolean[] { true, false })
1617 +        for (Integer v1 : new Integer[] { 1, null })
1618 +        for (Integer v2 : new Integer[] { 2, null })
1619 +    {
1620 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1621 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1622 +        final SubtractFunction[] rs = new SubtractFunction[6];
1623 +        for (int i = 0; i < rs.length; i++) rs[i] = new SubtractFunction(m);
1624 +
1625 +        final CompletableFuture<Integer> fst =  fFirst ? f : g;
1626 +        final CompletableFuture<Integer> snd = !fFirst ? f : g;
1627 +        final Integer w1 =  fFirst ? v1 : v2;
1628 +        final Integer w2 = !fFirst ? v1 : v2;
1629 +
1630 +        final CompletableFuture<Integer> h0 = m.thenCombine(f, g, rs[0]);
1631 +        final CompletableFuture<Integer> h1 = m.thenCombine(fst, fst, rs[1]);
1632 +        assertTrue(fst.complete(w1));
1633 +        final CompletableFuture<Integer> h2 = m.thenCombine(f, g, rs[2]);
1634 +        final CompletableFuture<Integer> h3 = m.thenCombine(fst, fst, rs[3]);
1635 +        checkIncomplete(h0); rs[0].assertNotInvoked();
1636 +        checkIncomplete(h2); rs[2].assertNotInvoked();
1637 +        checkCompletedNormally(h1, subtract(w1, w1));
1638 +        checkCompletedNormally(h3, subtract(w1, w1));
1639 +        rs[1].assertValue(subtract(w1, w1));
1640 +        rs[3].assertValue(subtract(w1, w1));
1641 +        assertTrue(snd.complete(w2));
1642 +        final CompletableFuture<Integer> h4 = m.thenCombine(f, g, rs[4]);
1643 +
1644 +        checkCompletedNormally(h0, subtract(v1, v2));
1645 +        checkCompletedNormally(h2, subtract(v1, v2));
1646 +        checkCompletedNormally(h4, subtract(v1, v2));
1647 +        rs[0].assertValue(subtract(v1, v2));
1648 +        rs[2].assertValue(subtract(v1, v2));
1649 +        rs[4].assertValue(subtract(v1, v2));
1650 +
1651 +        checkCompletedNormally(f, v1);
1652 +        checkCompletedNormally(g, v2);
1653 +    }}
1654 +
1655 +    /**
1656 +     * thenCombine result completes exceptionally after exceptional
1657 +     * completion of either source
1658 +     */
1659 +    public void testThenCombine_exceptionalCompletion() throws Throwable {
1660 +        for (ExecutionMode m : ExecutionMode.values())
1661 +        for (boolean fFirst : new boolean[] { true, false })
1662 +        for (boolean failFirst : new boolean[] { true, false })
1663 +        for (Integer v1 : new Integer[] { 1, null })
1664 +    {
1665 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1666 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1667 +        final CFException ex = new CFException();
1668 +        final SubtractFunction r1 = new SubtractFunction(m);
1669 +        final SubtractFunction r2 = new SubtractFunction(m);
1670 +        final SubtractFunction r3 = new SubtractFunction(m);
1671 +
1672 +        final CompletableFuture<Integer> fst =  fFirst ? f : g;
1673 +        final CompletableFuture<Integer> snd = !fFirst ? f : g;
1674 +        final Callable<Boolean> complete1 = failFirst ?
1675 +            () -> fst.completeExceptionally(ex) :
1676 +            () -> fst.complete(v1);
1677 +        final Callable<Boolean> complete2 = failFirst ?
1678 +            () -> snd.complete(v1) :
1679 +            () -> snd.completeExceptionally(ex);
1680 +
1681 +        final CompletableFuture<Integer> h1 = m.thenCombine(f, g, r1);
1682 +        assertTrue(complete1.call());
1683 +        final CompletableFuture<Integer> h2 = m.thenCombine(f, g, r2);
1684 +        checkIncomplete(h1);
1685 +        checkIncomplete(h2);
1686 +        assertTrue(complete2.call());
1687 +        final CompletableFuture<Integer> h3 = m.thenCombine(f, g, r3);
1688 +
1689 +        checkCompletedWithWrappedException(h1, ex);
1690 +        checkCompletedWithWrappedException(h2, ex);
1691 +        checkCompletedWithWrappedException(h3, ex);
1692 +        r1.assertNotInvoked();
1693 +        r2.assertNotInvoked();
1694 +        r3.assertNotInvoked();
1695 +        checkCompletedNormally(failFirst ? snd : fst, v1);
1696 +        checkCompletedExceptionally(failFirst ? fst : snd, ex);
1697 +    }}
1698 +
1699 +    /**
1700 +     * thenCombine result completes exceptionally if either source cancelled
1701 +     */
1702 +    public void testThenCombine_sourceCancelled() throws Throwable {
1703 +        for (ExecutionMode m : ExecutionMode.values())
1704 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1705 +        for (boolean fFirst : new boolean[] { true, false })
1706 +        for (boolean failFirst : new boolean[] { true, false })
1707 +        for (Integer v1 : new Integer[] { 1, null })
1708 +    {
1709 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1710 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1711 +        final SubtractFunction r1 = new SubtractFunction(m);
1712 +        final SubtractFunction r2 = new SubtractFunction(m);
1713 +        final SubtractFunction r3 = new SubtractFunction(m);
1714 +
1715 +        final CompletableFuture<Integer> fst =  fFirst ? f : g;
1716 +        final CompletableFuture<Integer> snd = !fFirst ? f : g;
1717 +        final Callable<Boolean> complete1 = failFirst ?
1718 +            () -> fst.cancel(mayInterruptIfRunning) :
1719 +            () -> fst.complete(v1);
1720 +        final Callable<Boolean> complete2 = failFirst ?
1721 +            () -> snd.complete(v1) :
1722 +            () -> snd.cancel(mayInterruptIfRunning);
1723 +
1724 +        final CompletableFuture<Integer> h1 = m.thenCombine(f, g, r1);
1725 +        assertTrue(complete1.call());
1726 +        final CompletableFuture<Integer> h2 = m.thenCombine(f, g, r2);
1727 +        checkIncomplete(h1);
1728 +        checkIncomplete(h2);
1729 +        assertTrue(complete2.call());
1730 +        final CompletableFuture<Integer> h3 = m.thenCombine(f, g, r3);
1731 +
1732 +        checkCompletedWithWrappedCancellationException(h1);
1733 +        checkCompletedWithWrappedCancellationException(h2);
1734 +        checkCompletedWithWrappedCancellationException(h3);
1735 +        r1.assertNotInvoked();
1736 +        r2.assertNotInvoked();
1737 +        r3.assertNotInvoked();
1738 +        checkCompletedNormally(failFirst ? snd : fst, v1);
1739 +        checkCancelled(failFirst ? fst : snd);
1740 +    }}
1741 +
1742 +    /**
1743 +     * thenCombine result completes exceptionally if action does
1744 +     */
1745 +    public void testThenCombine_actionFailed() {
1746 +        for (ExecutionMode m : ExecutionMode.values())
1747 +        for (boolean fFirst : new boolean[] { true, false })
1748 +        for (Integer v1 : new Integer[] { 1, null })
1749 +        for (Integer v2 : new Integer[] { 2, null })
1750 +    {
1751 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1752 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1753 +        final FailingBiFunction r1 = new FailingBiFunction(m);
1754 +        final FailingBiFunction r2 = new FailingBiFunction(m);
1755 +        final FailingBiFunction r3 = new FailingBiFunction(m);
1756 +
1757 +        final CompletableFuture<Integer> fst =  fFirst ? f : g;
1758 +        final CompletableFuture<Integer> snd = !fFirst ? f : g;
1759 +        final Integer w1 =  fFirst ? v1 : v2;
1760 +        final Integer w2 = !fFirst ? v1 : v2;
1761 +
1762 +        final CompletableFuture<Integer> h1 = m.thenCombine(f, g, r1);
1763 +        assertTrue(fst.complete(w1));
1764 +        final CompletableFuture<Integer> h2 = m.thenCombine(f, g, r2);
1765 +        assertTrue(snd.complete(w2));
1766 +        final CompletableFuture<Integer> h3 = m.thenCombine(f, g, r3);
1767 +
1768 +        checkCompletedWithWrappedCFException(h1);
1769 +        checkCompletedWithWrappedCFException(h2);
1770 +        checkCompletedWithWrappedCFException(h3);
1771 +        r1.assertInvoked();
1772 +        r2.assertInvoked();
1773 +        r3.assertInvoked();
1774 +        checkCompletedNormally(f, v1);
1775 +        checkCompletedNormally(g, v2);
1776 +    }}
1777 +
1778 +    /**
1779 +     * thenAcceptBoth result completes normally after normal
1780 +     * completion of sources
1781 +     */
1782 +    public void testThenAcceptBoth_normalCompletion() {
1783 +        for (ExecutionMode m : ExecutionMode.values())
1784 +        for (boolean fFirst : new boolean[] { true, false })
1785 +        for (Integer v1 : new Integer[] { 1, null })
1786 +        for (Integer v2 : new Integer[] { 2, null })
1787 +    {
1788 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1789 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1790 +        final SubtractAction r1 = new SubtractAction(m);
1791 +        final SubtractAction r2 = new SubtractAction(m);
1792 +        final SubtractAction r3 = new SubtractAction(m);
1793 +
1794 +        final CompletableFuture<Integer> fst =  fFirst ? f : g;
1795 +        final CompletableFuture<Integer> snd = !fFirst ? f : g;
1796 +        final Integer w1 =  fFirst ? v1 : v2;
1797 +        final Integer w2 = !fFirst ? v1 : v2;
1798 +
1799 +        final CompletableFuture<Void> h1 = m.thenAcceptBoth(f, g, r1);
1800 +        assertTrue(fst.complete(w1));
1801 +        final CompletableFuture<Void> h2 = m.thenAcceptBoth(f, g, r2);
1802 +        checkIncomplete(h1);
1803 +        checkIncomplete(h2);
1804 +        r1.assertNotInvoked();
1805 +        r2.assertNotInvoked();
1806 +        assertTrue(snd.complete(w2));
1807 +        final CompletableFuture<Void> h3 = m.thenAcceptBoth(f, g, r3);
1808 +
1809 +        checkCompletedNormally(h1, null);
1810 +        checkCompletedNormally(h2, null);
1811 +        checkCompletedNormally(h3, null);
1812 +        r1.assertValue(subtract(v1, v2));
1813 +        r2.assertValue(subtract(v1, v2));
1814 +        r3.assertValue(subtract(v1, v2));
1815 +        checkCompletedNormally(f, v1);
1816 +        checkCompletedNormally(g, v2);
1817 +    }}
1818 +
1819 +    /**
1820 +     * thenAcceptBoth result completes exceptionally after exceptional
1821 +     * completion of either source
1822 +     */
1823 +    public void testThenAcceptBoth_exceptionalCompletion() throws Throwable {
1824 +        for (ExecutionMode m : ExecutionMode.values())
1825 +        for (boolean fFirst : new boolean[] { true, false })
1826 +        for (boolean failFirst : new boolean[] { true, false })
1827 +        for (Integer v1 : new Integer[] { 1, null })
1828 +    {
1829 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1830 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1831 +        final CFException ex = new CFException();
1832 +        final SubtractAction r1 = new SubtractAction(m);
1833 +        final SubtractAction r2 = new SubtractAction(m);
1834 +        final SubtractAction r3 = new SubtractAction(m);
1835 +
1836 +        final CompletableFuture<Integer> fst =  fFirst ? f : g;
1837 +        final CompletableFuture<Integer> snd = !fFirst ? f : g;
1838 +        final Callable<Boolean> complete1 = failFirst ?
1839 +            () -> fst.completeExceptionally(ex) :
1840 +            () -> fst.complete(v1);
1841 +        final Callable<Boolean> complete2 = failFirst ?
1842 +            () -> snd.complete(v1) :
1843 +            () -> snd.completeExceptionally(ex);
1844 +
1845 +        final CompletableFuture<Void> h1 = m.thenAcceptBoth(f, g, r1);
1846 +        assertTrue(complete1.call());
1847 +        final CompletableFuture<Void> h2 = m.thenAcceptBoth(f, g, r2);
1848 +        checkIncomplete(h1);
1849 +        checkIncomplete(h2);
1850 +        assertTrue(complete2.call());
1851 +        final CompletableFuture<Void> h3 = m.thenAcceptBoth(f, g, r3);
1852 +
1853 +        checkCompletedWithWrappedException(h1, ex);
1854 +        checkCompletedWithWrappedException(h2, ex);
1855 +        checkCompletedWithWrappedException(h3, ex);
1856 +        r1.assertNotInvoked();
1857 +        r2.assertNotInvoked();
1858 +        r3.assertNotInvoked();
1859 +        checkCompletedNormally(failFirst ? snd : fst, v1);
1860 +        checkCompletedExceptionally(failFirst ? fst : snd, ex);
1861 +    }}
1862 +
1863 +    /**
1864 +     * thenAcceptBoth result completes exceptionally if either source cancelled
1865 +     */
1866 +    public void testThenAcceptBoth_sourceCancelled() throws Throwable {
1867 +        for (ExecutionMode m : ExecutionMode.values())
1868 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1869 +        for (boolean fFirst : new boolean[] { true, false })
1870 +        for (boolean failFirst : new boolean[] { true, false })
1871 +        for (Integer v1 : new Integer[] { 1, null })
1872 +    {
1873 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1874 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1875 +        final SubtractAction r1 = new SubtractAction(m);
1876 +        final SubtractAction r2 = new SubtractAction(m);
1877 +        final SubtractAction r3 = new SubtractAction(m);
1878 +
1879 +        final CompletableFuture<Integer> fst =  fFirst ? f : g;
1880 +        final CompletableFuture<Integer> snd = !fFirst ? f : g;
1881 +        final Callable<Boolean> complete1 = failFirst ?
1882 +            () -> fst.cancel(mayInterruptIfRunning) :
1883 +            () -> fst.complete(v1);
1884 +        final Callable<Boolean> complete2 = failFirst ?
1885 +            () -> snd.complete(v1) :
1886 +            () -> snd.cancel(mayInterruptIfRunning);
1887 +
1888 +        final CompletableFuture<Void> h1 = m.thenAcceptBoth(f, g, r1);
1889 +        assertTrue(complete1.call());
1890 +        final CompletableFuture<Void> h2 = m.thenAcceptBoth(f, g, r2);
1891 +        checkIncomplete(h1);
1892 +        checkIncomplete(h2);
1893 +        assertTrue(complete2.call());
1894 +        final CompletableFuture<Void> h3 = m.thenAcceptBoth(f, g, r3);
1895 +
1896 +        checkCompletedWithWrappedCancellationException(h1);
1897 +        checkCompletedWithWrappedCancellationException(h2);
1898 +        checkCompletedWithWrappedCancellationException(h3);
1899 +        r1.assertNotInvoked();
1900 +        r2.assertNotInvoked();
1901 +        r3.assertNotInvoked();
1902 +        checkCompletedNormally(failFirst ? snd : fst, v1);
1903 +        checkCancelled(failFirst ? fst : snd);
1904 +    }}
1905 +
1906 +    /**
1907 +     * thenAcceptBoth result completes exceptionally if action does
1908 +     */
1909 +    public void testThenAcceptBoth_actionFailed() {
1910 +        for (ExecutionMode m : ExecutionMode.values())
1911 +        for (boolean fFirst : new boolean[] { true, false })
1912 +        for (Integer v1 : new Integer[] { 1, null })
1913 +        for (Integer v2 : new Integer[] { 2, null })
1914 +    {
1915 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1916 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1917 +        final FailingBiConsumer r1 = new FailingBiConsumer(m);
1918 +        final FailingBiConsumer r2 = new FailingBiConsumer(m);
1919 +        final FailingBiConsumer r3 = new FailingBiConsumer(m);
1920 +
1921 +        final CompletableFuture<Integer> fst =  fFirst ? f : g;
1922 +        final CompletableFuture<Integer> snd = !fFirst ? f : g;
1923 +        final Integer w1 =  fFirst ? v1 : v2;
1924 +        final Integer w2 = !fFirst ? v1 : v2;
1925 +
1926 +        final CompletableFuture<Void> h1 = m.thenAcceptBoth(f, g, r1);
1927 +        assertTrue(fst.complete(w1));
1928 +        final CompletableFuture<Void> h2 = m.thenAcceptBoth(f, g, r2);
1929 +        assertTrue(snd.complete(w2));
1930 +        final CompletableFuture<Void> h3 = m.thenAcceptBoth(f, g, r3);
1931 +
1932 +        checkCompletedWithWrappedCFException(h1);
1933 +        checkCompletedWithWrappedCFException(h2);
1934 +        checkCompletedWithWrappedCFException(h3);
1935 +        r1.assertInvoked();
1936 +        r2.assertInvoked();
1937 +        r3.assertInvoked();
1938 +        checkCompletedNormally(f, v1);
1939 +        checkCompletedNormally(g, v2);
1940 +    }}
1941 +
1942 +    /**
1943 +     * runAfterBoth result completes normally after normal
1944 +     * completion of sources
1945 +     */
1946 +    public void testRunAfterBoth_normalCompletion() {
1947 +        for (ExecutionMode m : ExecutionMode.values())
1948 +        for (boolean fFirst : new boolean[] { true, false })
1949 +        for (Integer v1 : new Integer[] { 1, null })
1950 +        for (Integer v2 : new Integer[] { 2, null })
1951 +    {
1952 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1953 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1954 +        final Noop r1 = new Noop(m);
1955 +        final Noop r2 = new Noop(m);
1956 +        final Noop r3 = new Noop(m);
1957 +
1958 +        final CompletableFuture<Integer> fst =  fFirst ? f : g;
1959 +        final CompletableFuture<Integer> snd = !fFirst ? f : g;
1960 +        final Integer w1 =  fFirst ? v1 : v2;
1961 +        final Integer w2 = !fFirst ? v1 : v2;
1962 +
1963 +        final CompletableFuture<Void> h1 = m.runAfterBoth(f, g, r1);
1964 +        assertTrue(fst.complete(w1));
1965 +        final CompletableFuture<Void> h2 = m.runAfterBoth(f, g, r2);
1966 +        checkIncomplete(h1);
1967 +        checkIncomplete(h2);
1968 +        r1.assertNotInvoked();
1969 +        r2.assertNotInvoked();
1970 +        assertTrue(snd.complete(w2));
1971 +        final CompletableFuture<Void> h3 = m.runAfterBoth(f, g, r3);
1972 +
1973 +        checkCompletedNormally(h1, null);
1974 +        checkCompletedNormally(h2, null);
1975 +        checkCompletedNormally(h3, null);
1976 +        r1.assertInvoked();
1977 +        r2.assertInvoked();
1978 +        r3.assertInvoked();
1979 +        checkCompletedNormally(f, v1);
1980 +        checkCompletedNormally(g, v2);
1981 +    }}
1982 +
1983 +    /**
1984 +     * runAfterBoth result completes exceptionally after exceptional
1985 +     * completion of either source
1986 +     */
1987 +    public void testRunAfterBoth_exceptionalCompletion() throws Throwable {
1988 +        for (ExecutionMode m : ExecutionMode.values())
1989 +        for (boolean fFirst : new boolean[] { true, false })
1990 +        for (boolean failFirst : new boolean[] { true, false })
1991 +        for (Integer v1 : new Integer[] { 1, null })
1992 +    {
1993 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1994 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1995 +        final CFException ex = new CFException();
1996 +        final Noop r1 = new Noop(m);
1997 +        final Noop r2 = new Noop(m);
1998 +        final Noop r3 = new Noop(m);
1999 +
2000 +        final CompletableFuture<Integer> fst =  fFirst ? f : g;
2001 +        final CompletableFuture<Integer> snd = !fFirst ? f : g;
2002 +        final Callable<Boolean> complete1 = failFirst ?
2003 +            () -> fst.completeExceptionally(ex) :
2004 +            () -> fst.complete(v1);
2005 +        final Callable<Boolean> complete2 = failFirst ?
2006 +            () -> snd.complete(v1) :
2007 +            () -> snd.completeExceptionally(ex);
2008 +
2009 +        final CompletableFuture<Void> h1 = m.runAfterBoth(f, g, r1);
2010 +        assertTrue(complete1.call());
2011 +        final CompletableFuture<Void> h2 = m.runAfterBoth(f, g, r2);
2012 +        checkIncomplete(h1);
2013 +        checkIncomplete(h2);
2014 +        assertTrue(complete2.call());
2015 +        final CompletableFuture<Void> h3 = m.runAfterBoth(f, g, r3);
2016 +
2017 +        checkCompletedWithWrappedException(h1, ex);
2018 +        checkCompletedWithWrappedException(h2, ex);
2019 +        checkCompletedWithWrappedException(h3, ex);
2020 +        r1.assertNotInvoked();
2021 +        r2.assertNotInvoked();
2022 +        r3.assertNotInvoked();
2023 +        checkCompletedNormally(failFirst ? snd : fst, v1);
2024 +        checkCompletedExceptionally(failFirst ? fst : snd, ex);
2025 +    }}
2026 +
2027 +    /**
2028 +     * runAfterBoth result completes exceptionally if either source cancelled
2029 +     */
2030 +    public void testRunAfterBoth_sourceCancelled() throws Throwable {
2031 +        for (ExecutionMode m : ExecutionMode.values())
2032 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2033 +        for (boolean fFirst : new boolean[] { true, false })
2034 +        for (boolean failFirst : new boolean[] { true, false })
2035 +        for (Integer v1 : new Integer[] { 1, null })
2036 +    {
2037 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2038 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2039 +        final Noop r1 = new Noop(m);
2040 +        final Noop r2 = new Noop(m);
2041 +        final Noop r3 = new Noop(m);
2042 +
2043 +        final CompletableFuture<Integer> fst =  fFirst ? f : g;
2044 +        final CompletableFuture<Integer> snd = !fFirst ? f : g;
2045 +        final Callable<Boolean> complete1 = failFirst ?
2046 +            () -> fst.cancel(mayInterruptIfRunning) :
2047 +            () -> fst.complete(v1);
2048 +        final Callable<Boolean> complete2 = failFirst ?
2049 +            () -> snd.complete(v1) :
2050 +            () -> snd.cancel(mayInterruptIfRunning);
2051 +
2052 +        final CompletableFuture<Void> h1 = m.runAfterBoth(f, g, r1);
2053 +        assertTrue(complete1.call());
2054 +        final CompletableFuture<Void> h2 = m.runAfterBoth(f, g, r2);
2055 +        checkIncomplete(h1);
2056 +        checkIncomplete(h2);
2057 +        assertTrue(complete2.call());
2058 +        final CompletableFuture<Void> h3 = m.runAfterBoth(f, g, r3);
2059 +
2060 +        checkCompletedWithWrappedCancellationException(h1);
2061 +        checkCompletedWithWrappedCancellationException(h2);
2062 +        checkCompletedWithWrappedCancellationException(h3);
2063 +        r1.assertNotInvoked();
2064 +        r2.assertNotInvoked();
2065 +        r3.assertNotInvoked();
2066 +        checkCompletedNormally(failFirst ? snd : fst, v1);
2067 +        checkCancelled(failFirst ? fst : snd);
2068 +    }}
2069 +
2070 +    /**
2071 +     * runAfterBoth result completes exceptionally if action does
2072 +     */
2073 +    public void testRunAfterBoth_actionFailed() {
2074 +        for (ExecutionMode m : ExecutionMode.values())
2075 +        for (boolean fFirst : new boolean[] { true, false })
2076 +        for (Integer v1 : new Integer[] { 1, null })
2077 +        for (Integer v2 : new Integer[] { 2, null })
2078 +    {
2079 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2080 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2081 +        final FailingRunnable r1 = new FailingRunnable(m);
2082 +        final FailingRunnable r2 = new FailingRunnable(m);
2083 +        final FailingRunnable r3 = new FailingRunnable(m);
2084 +
2085 +        final CompletableFuture<Integer> fst =  fFirst ? f : g;
2086 +        final CompletableFuture<Integer> snd = !fFirst ? f : g;
2087 +        final Integer w1 =  fFirst ? v1 : v2;
2088 +        final Integer w2 = !fFirst ? v1 : v2;
2089 +
2090 +        final CompletableFuture<Void> h1 = m.runAfterBoth(f, g, r1);
2091 +        assertTrue(fst.complete(w1));
2092 +        final CompletableFuture<Void> h2 = m.runAfterBoth(f, g, r2);
2093 +        assertTrue(snd.complete(w2));
2094 +        final CompletableFuture<Void> h3 = m.runAfterBoth(f, g, r3);
2095 +
2096 +        checkCompletedWithWrappedCFException(h1);
2097 +        checkCompletedWithWrappedCFException(h2);
2098 +        checkCompletedWithWrappedCFException(h3);
2099 +        r1.assertInvoked();
2100 +        r2.assertInvoked();
2101 +        r3.assertInvoked();
2102 +        checkCompletedNormally(f, v1);
2103 +        checkCompletedNormally(g, v2);
2104 +    }}
2105 +
2106 +    /**
2107 +     * applyToEither result completes normally after normal completion
2108 +     * of either source
2109 +     */
2110 +    public void testApplyToEither_normalCompletion() {
2111 +        for (ExecutionMode m : ExecutionMode.values())
2112 +        for (Integer v1 : new Integer[] { 1, null })
2113 +        for (Integer v2 : new Integer[] { 2, null })
2114 +    {
2115 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2116 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2117 +        final IncFunction[] rs = new IncFunction[6];
2118 +        for (int i = 0; i < rs.length; i++) rs[i] = new IncFunction(m);
2119 +
2120 +        final CompletableFuture<Integer> h0 = m.applyToEither(f, g, rs[0]);
2121 +        final CompletableFuture<Integer> h1 = m.applyToEither(g, f, rs[1]);
2122 +        checkIncomplete(h0);
2123 +        checkIncomplete(h1);
2124 +        rs[0].assertNotInvoked();
2125 +        rs[1].assertNotInvoked();
2126 +        f.complete(v1);
2127 +        checkCompletedNormally(h0, inc(v1));
2128 +        checkCompletedNormally(h1, inc(v1));
2129 +        final CompletableFuture<Integer> h2 = m.applyToEither(f, g, rs[2]);
2130 +        final CompletableFuture<Integer> h3 = m.applyToEither(g, f, rs[3]);
2131 +        checkCompletedNormally(h2, inc(v1));
2132 +        checkCompletedNormally(h3, inc(v1));
2133 +        g.complete(v2);
2134 +
2135 +        // unspecified behavior - both source completions available
2136 +        final CompletableFuture<Integer> h4 = m.applyToEither(f, g, rs[4]);
2137 +        final CompletableFuture<Integer> h5 = m.applyToEither(g, f, rs[5]);
2138 +        rs[4].assertValue(h4.join());
2139 +        rs[5].assertValue(h5.join());
2140 +        assertTrue(Objects.equals(inc(v1), h4.join()) ||
2141 +                   Objects.equals(inc(v2), h4.join()));
2142 +        assertTrue(Objects.equals(inc(v1), h5.join()) ||
2143 +                   Objects.equals(inc(v2), h5.join()));
2144 +
2145 +        checkCompletedNormally(f, v1);
2146 +        checkCompletedNormally(g, v2);
2147 +        checkCompletedNormally(h0, inc(v1));
2148 +        checkCompletedNormally(h1, inc(v1));
2149 +        checkCompletedNormally(h2, inc(v1));
2150 +        checkCompletedNormally(h3, inc(v1));
2151 +        for (int i = 0; i < 4; i++) rs[i].assertValue(inc(v1));
2152 +    }}
2153 +
2154 +    /**
2155 +     * applyToEither result completes exceptionally after exceptional
2156 +     * completion of either source
2157 +     */
2158 +    public void testApplyToEither_exceptionalCompletion() {
2159 +        for (ExecutionMode m : ExecutionMode.values())
2160 +        for (Integer v1 : new Integer[] { 1, null })
2161 +    {
2162 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2163 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2164 +        final CFException ex = new CFException();
2165 +        final IncFunction[] rs = new IncFunction[6];
2166 +        for (int i = 0; i < rs.length; i++) rs[i] = new IncFunction(m);
2167 +
2168 +        final CompletableFuture<Integer> h0 = m.applyToEither(f, g, rs[0]);
2169 +        final CompletableFuture<Integer> h1 = m.applyToEither(g, f, rs[1]);
2170 +        checkIncomplete(h0);
2171 +        checkIncomplete(h1);
2172 +        rs[0].assertNotInvoked();
2173 +        rs[1].assertNotInvoked();
2174 +        f.completeExceptionally(ex);
2175 +        checkCompletedWithWrappedException(h0, ex);
2176 +        checkCompletedWithWrappedException(h1, ex);
2177 +        final CompletableFuture<Integer> h2 = m.applyToEither(f, g, rs[2]);
2178 +        final CompletableFuture<Integer> h3 = m.applyToEither(g, f, rs[3]);
2179 +        checkCompletedWithWrappedException(h2, ex);
2180 +        checkCompletedWithWrappedException(h3, ex);
2181 +        g.complete(v1);
2182 +
2183 +        // unspecified behavior - both source completions available
2184 +        final CompletableFuture<Integer> h4 = m.applyToEither(f, g, rs[4]);
2185 +        final CompletableFuture<Integer> h5 = m.applyToEither(g, f, rs[5]);
2186 +        try {
2187 +            assertEquals(inc(v1), h4.join());
2188 +            rs[4].assertValue(inc(v1));
2189 +        } catch (CompletionException ok) {
2190 +            checkCompletedWithWrappedException(h4, ex);
2191 +            rs[4].assertNotInvoked();
2192 +        }
2193 +        try {
2194 +            assertEquals(inc(v1), h5.join());
2195 +            rs[5].assertValue(inc(v1));
2196 +        } catch (CompletionException ok) {
2197 +            checkCompletedWithWrappedException(h5, ex);
2198 +            rs[5].assertNotInvoked();
2199 +        }
2200 +
2201 +        checkCompletedExceptionally(f, ex);
2202 +        checkCompletedNormally(g, v1);
2203 +        checkCompletedWithWrappedException(h0, ex);
2204 +        checkCompletedWithWrappedException(h1, ex);
2205 +        checkCompletedWithWrappedException(h2, ex);
2206 +        checkCompletedWithWrappedException(h3, ex);
2207 +        checkCompletedWithWrappedException(h4, ex);
2208 +        for (int i = 0; i < 4; i++) rs[i].assertNotInvoked();
2209 +    }}
2210 +
2211 +    public void testApplyToEither_exceptionalCompletion2() {
2212 +        for (ExecutionMode m : ExecutionMode.values())
2213 +        for (boolean fFirst : new boolean[] { true, false })
2214 +        for (Integer v1 : new Integer[] { 1, null })
2215 +    {
2216 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2217 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2218 +        final CFException ex = new CFException();
2219 +        final IncFunction[] rs = new IncFunction[6];
2220 +        for (int i = 0; i < rs.length; i++) rs[i] = new IncFunction(m);
2221 +
2222 +        final CompletableFuture<Integer> h0 = m.applyToEither(f, g, rs[0]);
2223 +        final CompletableFuture<Integer> h1 = m.applyToEither(g, f, rs[1]);
2224 +        assertTrue(fFirst ? f.complete(v1) : g.completeExceptionally(ex));
2225 +        assertTrue(!fFirst ? f.complete(v1) : g.completeExceptionally(ex));
2226 +        final CompletableFuture<Integer> h2 = m.applyToEither(f, g, rs[2]);
2227 +        final CompletableFuture<Integer> h3 = m.applyToEither(g, f, rs[3]);
2228 +
2229 +        // unspecified behavior - both source completions available
2230 +        try {
2231 +            assertEquals(inc(v1), h0.join());
2232 +            rs[0].assertValue(inc(v1));
2233 +        } catch (CompletionException ok) {
2234 +            checkCompletedWithWrappedException(h0, ex);
2235 +            rs[0].assertNotInvoked();
2236 +        }
2237 +        try {
2238 +            assertEquals(inc(v1), h1.join());
2239 +            rs[1].assertValue(inc(v1));
2240 +        } catch (CompletionException ok) {
2241 +            checkCompletedWithWrappedException(h1, ex);
2242 +            rs[1].assertNotInvoked();
2243 +        }
2244 +        try {
2245 +            assertEquals(inc(v1), h2.join());
2246 +            rs[2].assertValue(inc(v1));
2247 +        } catch (CompletionException ok) {
2248 +            checkCompletedWithWrappedException(h2, ex);
2249 +            rs[2].assertNotInvoked();
2250 +        }
2251 +        try {
2252 +            assertEquals(inc(v1), h3.join());
2253 +            rs[3].assertValue(inc(v1));
2254 +        } catch (CompletionException ok) {
2255 +            checkCompletedWithWrappedException(h3, ex);
2256 +            rs[3].assertNotInvoked();
2257 +        }
2258 +
2259 +        checkCompletedNormally(f, v1);
2260 +        checkCompletedExceptionally(g, ex);
2261 +    }}
2262 +
2263 +    /**
2264 +     * applyToEither result completes exceptionally if either source cancelled
2265 +     */
2266 +    public void testApplyToEither_sourceCancelled() {
2267 +        for (ExecutionMode m : ExecutionMode.values())
2268 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2269 +        for (Integer v1 : new Integer[] { 1, null })
2270 +    {
2271 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2272 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2273 +        final IncFunction[] rs = new IncFunction[6];
2274 +        for (int i = 0; i < rs.length; i++) rs[i] = new IncFunction(m);
2275 +
2276 +        final CompletableFuture<Integer> h0 = m.applyToEither(f, g, rs[0]);
2277 +        final CompletableFuture<Integer> h1 = m.applyToEither(g, f, rs[1]);
2278 +        checkIncomplete(h0);
2279 +        checkIncomplete(h1);
2280 +        rs[0].assertNotInvoked();
2281 +        rs[1].assertNotInvoked();
2282 +        f.cancel(mayInterruptIfRunning);
2283 +        checkCompletedWithWrappedCancellationException(h0);
2284 +        checkCompletedWithWrappedCancellationException(h1);
2285 +        final CompletableFuture<Integer> h2 = m.applyToEither(f, g, rs[2]);
2286 +        final CompletableFuture<Integer> h3 = m.applyToEither(g, f, rs[3]);
2287 +        checkCompletedWithWrappedCancellationException(h2);
2288 +        checkCompletedWithWrappedCancellationException(h3);
2289 +        g.complete(v1);
2290 +
2291 +        // unspecified behavior - both source completions available
2292 +        final CompletableFuture<Integer> h4 = m.applyToEither(f, g, rs[4]);
2293 +        final CompletableFuture<Integer> h5 = m.applyToEither(g, f, rs[5]);
2294 +        try {
2295 +            assertEquals(inc(v1), h4.join());
2296 +            rs[4].assertValue(inc(v1));
2297 +        } catch (CompletionException ok) {
2298 +            checkCompletedWithWrappedCancellationException(h4);
2299 +            rs[4].assertNotInvoked();
2300 +        }
2301 +        try {
2302 +            assertEquals(inc(v1), h5.join());
2303 +            rs[5].assertValue(inc(v1));
2304 +        } catch (CompletionException ok) {
2305 +            checkCompletedWithWrappedCancellationException(h5);
2306 +            rs[5].assertNotInvoked();
2307 +        }
2308 +
2309 +        checkCancelled(f);
2310 +        checkCompletedNormally(g, v1);
2311 +        checkCompletedWithWrappedCancellationException(h0);
2312 +        checkCompletedWithWrappedCancellationException(h1);
2313 +        checkCompletedWithWrappedCancellationException(h2);
2314 +        checkCompletedWithWrappedCancellationException(h3);
2315 +        for (int i = 0; i < 4; i++) rs[i].assertNotInvoked();
2316 +    }}
2317 +
2318 +    public void testApplyToEither_sourceCancelled2() {
2319 +        for (ExecutionMode m : ExecutionMode.values())
2320 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2321 +        for (boolean fFirst : new boolean[] { true, false })
2322 +        for (Integer v1 : new Integer[] { 1, null })
2323 +    {
2324 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2325 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2326 +        final IncFunction[] rs = new IncFunction[6];
2327 +        for (int i = 0; i < rs.length; i++) rs[i] = new IncFunction(m);
2328 +
2329 +        final CompletableFuture<Integer> h0 = m.applyToEither(f, g, rs[0]);
2330 +        final CompletableFuture<Integer> h1 = m.applyToEither(g, f, rs[1]);
2331 +        assertTrue(fFirst ? f.complete(v1) : g.cancel(mayInterruptIfRunning));
2332 +        assertTrue(!fFirst ? f.complete(v1) : g.cancel(mayInterruptIfRunning));
2333 +        final CompletableFuture<Integer> h2 = m.applyToEither(f, g, rs[2]);
2334 +        final CompletableFuture<Integer> h3 = m.applyToEither(g, f, rs[3]);
2335 +
2336 +        // unspecified behavior - both source completions available
2337 +        try {
2338 +            assertEquals(inc(v1), h0.join());
2339 +            rs[0].assertValue(inc(v1));
2340 +        } catch (CompletionException ok) {
2341 +            checkCompletedWithWrappedCancellationException(h0);
2342 +            rs[0].assertNotInvoked();
2343 +        }
2344 +        try {
2345 +            assertEquals(inc(v1), h1.join());
2346 +            rs[1].assertValue(inc(v1));
2347 +        } catch (CompletionException ok) {
2348 +            checkCompletedWithWrappedCancellationException(h1);
2349 +            rs[1].assertNotInvoked();
2350 +        }
2351 +        try {
2352 +            assertEquals(inc(v1), h2.join());
2353 +            rs[2].assertValue(inc(v1));
2354 +        } catch (CompletionException ok) {
2355 +            checkCompletedWithWrappedCancellationException(h2);
2356 +            rs[2].assertNotInvoked();
2357 +        }
2358 +        try {
2359 +            assertEquals(inc(v1), h3.join());
2360 +            rs[3].assertValue(inc(v1));
2361 +        } catch (CompletionException ok) {
2362 +            checkCompletedWithWrappedCancellationException(h3);
2363 +            rs[3].assertNotInvoked();
2364 +        }
2365 +
2366 +        checkCompletedNormally(f, v1);
2367 +        checkCancelled(g);
2368 +    }}
2369 +
2370 +    /**
2371 +     * applyToEither result completes exceptionally if action does
2372 +     */
2373 +    public void testApplyToEither_actionFailed() {
2374 +        for (ExecutionMode m : ExecutionMode.values())
2375 +        for (Integer v1 : new Integer[] { 1, null })
2376 +        for (Integer v2 : new Integer[] { 2, null })
2377 +    {
2378 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2379 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2380 +        final FailingFunction[] rs = new FailingFunction[6];
2381 +        for (int i = 0; i < rs.length; i++) rs[i] = new FailingFunction(m);
2382 +
2383 +        final CompletableFuture<Integer> h0 = m.applyToEither(f, g, rs[0]);
2384 +        final CompletableFuture<Integer> h1 = m.applyToEither(g, f, rs[1]);
2385 +        f.complete(v1);
2386 +        final CompletableFuture<Integer> h2 = m.applyToEither(f, g, rs[2]);
2387 +        final CompletableFuture<Integer> h3 = m.applyToEither(g, f, rs[3]);
2388 +        checkCompletedWithWrappedCFException(h0);
2389 +        checkCompletedWithWrappedCFException(h1);
2390 +        checkCompletedWithWrappedCFException(h2);
2391 +        checkCompletedWithWrappedCFException(h3);
2392 +        for (int i = 0; i < 4; i++) rs[i].assertValue(v1);
2393 +
2394 +        g.complete(v2);
2395 +
2396 +        // unspecified behavior - both source completions available
2397 +        final CompletableFuture<Integer> h4 = m.applyToEither(f, g, rs[4]);
2398 +        final CompletableFuture<Integer> h5 = m.applyToEither(g, f, rs[5]);
2399 +
2400 +        checkCompletedWithWrappedCFException(h4);
2401 +        assertTrue(Objects.equals(v1, rs[4].value) ||
2402 +                   Objects.equals(v2, rs[4].value));
2403 +        checkCompletedWithWrappedCFException(h5);
2404 +        assertTrue(Objects.equals(v1, rs[5].value) ||
2405 +                   Objects.equals(v2, rs[5].value));
2406 +
2407 +        checkCompletedNormally(f, v1);
2408 +        checkCompletedNormally(g, v2);
2409 +    }}
2410 +
2411 +    /**
2412 +     * acceptEither result completes normally after normal completion
2413 +     * of either source
2414 +     */
2415 +    public void testAcceptEither_normalCompletion() {
2416 +        for (ExecutionMode m : ExecutionMode.values())
2417 +        for (Integer v1 : new Integer[] { 1, null })
2418 +        for (Integer v2 : new Integer[] { 2, null })
2419 +    {
2420 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2421 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2422 +        final NoopConsumer[] rs = new NoopConsumer[6];
2423 +        for (int i = 0; i < rs.length; i++) rs[i] = new NoopConsumer(m);
2424 +
2425 +        final CompletableFuture<Void> h0 = m.acceptEither(f, g, rs[0]);
2426 +        final CompletableFuture<Void> h1 = m.acceptEither(g, f, rs[1]);
2427 +        checkIncomplete(h0);
2428 +        checkIncomplete(h1);
2429 +        rs[0].assertNotInvoked();
2430 +        rs[1].assertNotInvoked();
2431 +        f.complete(v1);
2432 +        checkCompletedNormally(h0, null);
2433 +        checkCompletedNormally(h1, null);
2434 +        rs[0].assertValue(v1);
2435 +        rs[1].assertValue(v1);
2436 +        final CompletableFuture<Void> h2 = m.acceptEither(f, g, rs[2]);
2437 +        final CompletableFuture<Void> h3 = m.acceptEither(g, f, rs[3]);
2438 +        checkCompletedNormally(h2, null);
2439 +        checkCompletedNormally(h3, null);
2440 +        rs[2].assertValue(v1);
2441 +        rs[3].assertValue(v1);
2442 +        g.complete(v2);
2443 +
2444 +        // unspecified behavior - both source completions available
2445 +        final CompletableFuture<Void> h4 = m.acceptEither(f, g, rs[4]);
2446 +        final CompletableFuture<Void> h5 = m.acceptEither(g, f, rs[5]);
2447 +        checkCompletedNormally(h4, null);
2448 +        checkCompletedNormally(h5, null);
2449 +        assertTrue(Objects.equals(v1, rs[4].value) ||
2450 +                   Objects.equals(v2, rs[4].value));
2451 +        assertTrue(Objects.equals(v1, rs[5].value) ||
2452 +                   Objects.equals(v2, rs[5].value));
2453 +
2454 +        checkCompletedNormally(f, v1);
2455 +        checkCompletedNormally(g, v2);
2456 +        checkCompletedNormally(h0, null);
2457 +        checkCompletedNormally(h1, null);
2458 +        checkCompletedNormally(h2, null);
2459 +        checkCompletedNormally(h3, null);
2460 +        for (int i = 0; i < 4; i++) rs[i].assertValue(v1);
2461 +    }}
2462 +
2463 +    /**
2464 +     * acceptEither result completes exceptionally after exceptional
2465 +     * completion of either source
2466 +     */
2467 +    public void testAcceptEither_exceptionalCompletion() {
2468 +        for (ExecutionMode m : ExecutionMode.values())
2469 +        for (Integer v1 : new Integer[] { 1, null })
2470 +    {
2471 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2472 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2473 +        final CFException ex = new CFException();
2474 +        final NoopConsumer[] rs = new NoopConsumer[6];
2475 +        for (int i = 0; i < rs.length; i++) rs[i] = new NoopConsumer(m);
2476 +
2477 +        final CompletableFuture<Void> h0 = m.acceptEither(f, g, rs[0]);
2478 +        final CompletableFuture<Void> h1 = m.acceptEither(g, f, rs[1]);
2479 +        checkIncomplete(h0);
2480 +        checkIncomplete(h1);
2481 +        rs[0].assertNotInvoked();
2482 +        rs[1].assertNotInvoked();
2483 +        f.completeExceptionally(ex);
2484 +        checkCompletedWithWrappedException(h0, ex);
2485 +        checkCompletedWithWrappedException(h1, ex);
2486 +        final CompletableFuture<Void> h2 = m.acceptEither(f, g, rs[2]);
2487 +        final CompletableFuture<Void> h3 = m.acceptEither(g, f, rs[3]);
2488 +        checkCompletedWithWrappedException(h2, ex);
2489 +        checkCompletedWithWrappedException(h3, ex);
2490 +
2491 +        g.complete(v1);
2492 +
2493 +        // unspecified behavior - both source completions available
2494 +        final CompletableFuture<Void> h4 = m.acceptEither(f, g, rs[4]);
2495 +        final CompletableFuture<Void> h5 = m.acceptEither(g, f, rs[5]);
2496 +        try {
2497 +            assertNull(h4.join());
2498 +            rs[4].assertValue(v1);
2499 +        } catch (CompletionException ok) {
2500 +            checkCompletedWithWrappedException(h4, ex);
2501 +            rs[4].assertNotInvoked();
2502 +        }
2503 +        try {
2504 +            assertNull(h5.join());
2505 +            rs[5].assertValue(v1);
2506 +        } catch (CompletionException ok) {
2507 +            checkCompletedWithWrappedException(h5, ex);
2508 +            rs[5].assertNotInvoked();
2509 +        }
2510 +
2511 +        checkCompletedExceptionally(f, ex);
2512 +        checkCompletedNormally(g, v1);
2513 +        checkCompletedWithWrappedException(h0, ex);
2514 +        checkCompletedWithWrappedException(h1, ex);
2515 +        checkCompletedWithWrappedException(h2, ex);
2516 +        checkCompletedWithWrappedException(h3, ex);
2517 +        checkCompletedWithWrappedException(h4, ex);
2518 +        for (int i = 0; i < 4; i++) rs[i].assertNotInvoked();
2519 +    }}
2520 +
2521 +    public void testAcceptEither_exceptionalCompletion2() {
2522 +        for (ExecutionMode m : ExecutionMode.values())
2523 +        for (boolean fFirst : new boolean[] { true, false })
2524 +        for (Integer v1 : new Integer[] { 1, null })
2525 +    {
2526 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2527 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2528 +        final CFException ex = new CFException();
2529 +        final NoopConsumer[] rs = new NoopConsumer[6];
2530 +        for (int i = 0; i < rs.length; i++) rs[i] = new NoopConsumer(m);
2531 +
2532 +        final CompletableFuture<Void> h0 = m.acceptEither(f, g, rs[0]);
2533 +        final CompletableFuture<Void> h1 = m.acceptEither(g, f, rs[1]);
2534 +        assertTrue(fFirst ? f.complete(v1) : g.completeExceptionally(ex));
2535 +        assertTrue(!fFirst ? f.complete(v1) : g.completeExceptionally(ex));
2536 +        final CompletableFuture<Void> h2 = m.acceptEither(f, g, rs[2]);
2537 +        final CompletableFuture<Void> h3 = m.acceptEither(g, f, rs[3]);
2538 +
2539 +        // unspecified behavior - both source completions available
2540 +        try {
2541 +            assertEquals(null, h0.join());
2542 +            rs[0].assertValue(v1);
2543 +        } catch (CompletionException ok) {
2544 +            checkCompletedWithWrappedException(h0, ex);
2545 +            rs[0].assertNotInvoked();
2546 +        }
2547 +        try {
2548 +            assertEquals(null, h1.join());
2549 +            rs[1].assertValue(v1);
2550 +        } catch (CompletionException ok) {
2551 +            checkCompletedWithWrappedException(h1, ex);
2552 +            rs[1].assertNotInvoked();
2553 +        }
2554 +        try {
2555 +            assertEquals(null, h2.join());
2556 +            rs[2].assertValue(v1);
2557 +        } catch (CompletionException ok) {
2558 +            checkCompletedWithWrappedException(h2, ex);
2559 +            rs[2].assertNotInvoked();
2560 +        }
2561 +        try {
2562 +            assertEquals(null, h3.join());
2563 +            rs[3].assertValue(v1);
2564 +        } catch (CompletionException ok) {
2565 +            checkCompletedWithWrappedException(h3, ex);
2566 +            rs[3].assertNotInvoked();
2567 +        }
2568 +
2569 +        checkCompletedNormally(f, v1);
2570 +        checkCompletedExceptionally(g, ex);
2571 +    }}
2572 +
2573 +    /**
2574 +     * acceptEither result completes exceptionally if either source cancelled
2575 +     */
2576 +    public void testAcceptEither_sourceCancelled() {
2577 +        for (ExecutionMode m : ExecutionMode.values())
2578 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2579 +        for (Integer v1 : new Integer[] { 1, null })
2580 +    {
2581 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2582 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2583 +        final NoopConsumer[] rs = new NoopConsumer[6];
2584 +        for (int i = 0; i < rs.length; i++) rs[i] = new NoopConsumer(m);
2585 +
2586 +        final CompletableFuture<Void> h0 = m.acceptEither(f, g, rs[0]);
2587 +        final CompletableFuture<Void> h1 = m.acceptEither(g, f, rs[1]);
2588 +        checkIncomplete(h0);
2589 +        checkIncomplete(h1);
2590 +        rs[0].assertNotInvoked();
2591 +        rs[1].assertNotInvoked();
2592 +        f.cancel(mayInterruptIfRunning);
2593 +        checkCompletedWithWrappedCancellationException(h0);
2594 +        checkCompletedWithWrappedCancellationException(h1);
2595 +        final CompletableFuture<Void> h2 = m.acceptEither(f, g, rs[2]);
2596 +        final CompletableFuture<Void> h3 = m.acceptEither(g, f, rs[3]);
2597 +        checkCompletedWithWrappedCancellationException(h2);
2598 +        checkCompletedWithWrappedCancellationException(h3);
2599 +
2600 +        g.complete(v1);
2601 +
2602 +        // unspecified behavior - both source completions available
2603 +        final CompletableFuture<Void> h4 = m.acceptEither(f, g, rs[4]);
2604 +        final CompletableFuture<Void> h5 = m.acceptEither(g, f, rs[5]);
2605 +        try {
2606 +            assertNull(h4.join());
2607 +            rs[4].assertValue(v1);
2608 +        } catch (CompletionException ok) {
2609 +            checkCompletedWithWrappedCancellationException(h4);
2610 +            rs[4].assertNotInvoked();
2611 +        }
2612 +        try {
2613 +            assertNull(h5.join());
2614 +            rs[5].assertValue(v1);
2615 +        } catch (CompletionException ok) {
2616 +            checkCompletedWithWrappedCancellationException(h5);
2617 +            rs[5].assertNotInvoked();
2618 +        }
2619 +
2620 +        checkCancelled(f);
2621 +        checkCompletedNormally(g, v1);
2622 +        checkCompletedWithWrappedCancellationException(h0);
2623 +        checkCompletedWithWrappedCancellationException(h1);
2624 +        checkCompletedWithWrappedCancellationException(h2);
2625 +        checkCompletedWithWrappedCancellationException(h3);
2626 +        for (int i = 0; i < 4; i++) rs[i].assertNotInvoked();
2627 +    }}
2628 +
2629 +    /**
2630 +     * acceptEither result completes exceptionally if action does
2631 +     */
2632 +    public void testAcceptEither_actionFailed() {
2633 +        for (ExecutionMode m : ExecutionMode.values())
2634 +        for (Integer v1 : new Integer[] { 1, null })
2635 +        for (Integer v2 : new Integer[] { 2, null })
2636 +    {
2637 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2638 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2639 +        final FailingConsumer[] rs = new FailingConsumer[6];
2640 +        for (int i = 0; i < rs.length; i++) rs[i] = new FailingConsumer(m);
2641 +
2642 +        final CompletableFuture<Void> h0 = m.acceptEither(f, g, rs[0]);
2643 +        final CompletableFuture<Void> h1 = m.acceptEither(g, f, rs[1]);
2644 +        f.complete(v1);
2645 +        final CompletableFuture<Void> h2 = m.acceptEither(f, g, rs[2]);
2646 +        final CompletableFuture<Void> h3 = m.acceptEither(g, f, rs[3]);
2647 +        checkCompletedWithWrappedCFException(h0);
2648 +        checkCompletedWithWrappedCFException(h1);
2649 +        checkCompletedWithWrappedCFException(h2);
2650 +        checkCompletedWithWrappedCFException(h3);
2651 +        for (int i = 0; i < 4; i++) rs[i].assertValue(v1);
2652 +
2653 +        g.complete(v2);
2654 +
2655 +        // unspecified behavior - both source completions available
2656 +        final CompletableFuture<Void> h4 = m.acceptEither(f, g, rs[4]);
2657 +        final CompletableFuture<Void> h5 = m.acceptEither(g, f, rs[5]);
2658 +
2659 +        checkCompletedWithWrappedCFException(h4);
2660 +        assertTrue(Objects.equals(v1, rs[4].value) ||
2661 +                   Objects.equals(v2, rs[4].value));
2662 +        checkCompletedWithWrappedCFException(h5);
2663 +        assertTrue(Objects.equals(v1, rs[5].value) ||
2664 +                   Objects.equals(v2, rs[5].value));
2665 +
2666 +        checkCompletedNormally(f, v1);
2667 +        checkCompletedNormally(g, v2);
2668 +    }}
2669 +
2670 +    /**
2671 +     * runAfterEither result completes normally after normal completion
2672 +     * of either source
2673 +     */
2674 +    public void testRunAfterEither_normalCompletion() {
2675 +        for (ExecutionMode m : ExecutionMode.values())
2676 +        for (Integer v1 : new Integer[] { 1, null })
2677 +        for (Integer v2 : new Integer[] { 2, null })
2678 +    {
2679 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2680 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2681 +        final Noop[] rs = new Noop[6];
2682 +        for (int i = 0; i < rs.length; i++) rs[i] = new Noop(m);
2683 +
2684 +        final CompletableFuture<Void> h0 = m.runAfterEither(f, g, rs[0]);
2685 +        final CompletableFuture<Void> h1 = m.runAfterEither(g, f, rs[1]);
2686 +        checkIncomplete(h0);
2687 +        checkIncomplete(h1);
2688 +        rs[0].assertNotInvoked();
2689 +        rs[1].assertNotInvoked();
2690 +        f.complete(v1);
2691 +        checkCompletedNormally(h0, null);
2692 +        checkCompletedNormally(h1, null);
2693 +        rs[0].assertInvoked();
2694 +        rs[1].assertInvoked();
2695 +        final CompletableFuture<Void> h2 = m.runAfterEither(f, g, rs[2]);
2696 +        final CompletableFuture<Void> h3 = m.runAfterEither(g, f, rs[3]);
2697 +        checkCompletedNormally(h2, null);
2698 +        checkCompletedNormally(h3, null);
2699 +        rs[2].assertInvoked();
2700 +        rs[3].assertInvoked();
2701 +
2702 +        g.complete(v2);
2703 +
2704 +        final CompletableFuture<Void> h4 = m.runAfterEither(f, g, rs[4]);
2705 +        final CompletableFuture<Void> h5 = m.runAfterEither(g, f, rs[5]);
2706 +
2707 +        checkCompletedNormally(f, v1);
2708 +        checkCompletedNormally(g, v2);
2709 +        checkCompletedNormally(h0, null);
2710 +        checkCompletedNormally(h1, null);
2711 +        checkCompletedNormally(h2, null);
2712 +        checkCompletedNormally(h3, null);
2713 +        checkCompletedNormally(h4, null);
2714 +        checkCompletedNormally(h5, null);
2715 +        for (int i = 0; i < 6; i++) rs[i].assertInvoked();
2716 +    }}
2717 +
2718 +    /**
2719 +     * runAfterEither result completes exceptionally after exceptional
2720 +     * completion of either source
2721 +     */
2722 +    public void testRunAfterEither_exceptionalCompletion() {
2723 +        for (ExecutionMode m : ExecutionMode.values())
2724 +        for (Integer v1 : new Integer[] { 1, null })
2725 +    {
2726 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2727 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2728 +        final CFException ex = new CFException();
2729 +        final Noop[] rs = new Noop[6];
2730 +        for (int i = 0; i < rs.length; i++) rs[i] = new Noop(m);
2731 +
2732 +        final CompletableFuture<Void> h0 = m.runAfterEither(f, g, rs[0]);
2733 +        final CompletableFuture<Void> h1 = m.runAfterEither(g, f, rs[1]);
2734 +        checkIncomplete(h0);
2735 +        checkIncomplete(h1);
2736 +        rs[0].assertNotInvoked();
2737 +        rs[1].assertNotInvoked();
2738 +        assertTrue(f.completeExceptionally(ex));
2739 +        checkCompletedWithWrappedException(h0, ex);
2740 +        checkCompletedWithWrappedException(h1, ex);
2741 +        final CompletableFuture<Void> h2 = m.runAfterEither(f, g, rs[2]);
2742 +        final CompletableFuture<Void> h3 = m.runAfterEither(g, f, rs[3]);
2743 +        checkCompletedWithWrappedException(h2, ex);
2744 +        checkCompletedWithWrappedException(h3, ex);
2745 +
2746 +        assertTrue(g.complete(v1));
2747 +
2748 +        // unspecified behavior - both source completions available
2749 +        final CompletableFuture<Void> h4 = m.runAfterEither(f, g, rs[4]);
2750 +        final CompletableFuture<Void> h5 = m.runAfterEither(g, f, rs[5]);
2751 +        try {
2752 +            assertNull(h4.join());
2753 +            rs[4].assertInvoked();
2754 +        } catch (CompletionException ok) {
2755 +            checkCompletedWithWrappedException(h4, ex);
2756 +            rs[4].assertNotInvoked();
2757 +        }
2758 +        try {
2759 +            assertNull(h5.join());
2760 +            rs[5].assertInvoked();
2761 +        } catch (CompletionException ok) {
2762 +            checkCompletedWithWrappedException(h5, ex);
2763 +            rs[5].assertNotInvoked();
2764 +        }
2765 +
2766 +        checkCompletedExceptionally(f, ex);
2767 +        checkCompletedNormally(g, v1);
2768 +        checkCompletedWithWrappedException(h0, ex);
2769 +        checkCompletedWithWrappedException(h1, ex);
2770 +        checkCompletedWithWrappedException(h2, ex);
2771 +        checkCompletedWithWrappedException(h3, ex);
2772 +        checkCompletedWithWrappedException(h4, ex);
2773 +        for (int i = 0; i < 4; i++) rs[i].assertNotInvoked();
2774 +    }}
2775 +
2776 +    public void testRunAfterEither_exceptionalCompletion2() {
2777 +        for (ExecutionMode m : ExecutionMode.values())
2778 +        for (boolean fFirst : new boolean[] { true, false })
2779 +        for (Integer v1 : new Integer[] { 1, null })
2780 +    {
2781 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2782 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2783 +        final CFException ex = new CFException();
2784 +        final Noop[] rs = new Noop[6];
2785 +        for (int i = 0; i < rs.length; i++) rs[i] = new Noop(m);
2786 +
2787 +        final CompletableFuture<Void> h0 = m.runAfterEither(f, g, rs[0]);
2788 +        final CompletableFuture<Void> h1 = m.runAfterEither(g, f, rs[1]);
2789 +        assertTrue( fFirst ? f.complete(v1) : g.completeExceptionally(ex));
2790 +        assertTrue(!fFirst ? f.complete(v1) : g.completeExceptionally(ex));
2791 +        final CompletableFuture<Void> h2 = m.runAfterEither(f, g, rs[2]);
2792 +        final CompletableFuture<Void> h3 = m.runAfterEither(g, f, rs[3]);
2793 +
2794 +        // unspecified behavior - both source completions available
2795 +        try {
2796 +            assertEquals(null, h0.join());
2797 +            rs[0].assertInvoked();
2798 +        } catch (CompletionException ok) {
2799 +            checkCompletedWithWrappedException(h0, ex);
2800 +            rs[0].assertNotInvoked();
2801 +        }
2802 +        try {
2803 +            assertEquals(null, h1.join());
2804 +            rs[1].assertInvoked();
2805 +        } catch (CompletionException ok) {
2806 +            checkCompletedWithWrappedException(h1, ex);
2807 +            rs[1].assertNotInvoked();
2808 +        }
2809 +        try {
2810 +            assertEquals(null, h2.join());
2811 +            rs[2].assertInvoked();
2812 +        } catch (CompletionException ok) {
2813 +            checkCompletedWithWrappedException(h2, ex);
2814 +            rs[2].assertNotInvoked();
2815 +        }
2816 +        try {
2817 +            assertEquals(null, h3.join());
2818 +            rs[3].assertInvoked();
2819 +        } catch (CompletionException ok) {
2820 +            checkCompletedWithWrappedException(h3, ex);
2821 +            rs[3].assertNotInvoked();
2822 +        }
2823 +
2824 +        checkCompletedNormally(f, v1);
2825 +        checkCompletedExceptionally(g, ex);
2826 +    }}
2827 +
2828 +    /**
2829 +     * runAfterEither result completes exceptionally if either source cancelled
2830 +     */
2831 +    public void testRunAfterEither_sourceCancelled() {
2832 +        for (ExecutionMode m : ExecutionMode.values())
2833 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2834 +        for (Integer v1 : new Integer[] { 1, null })
2835 +    {
2836 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2837 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2838 +        final Noop[] rs = new Noop[6];
2839 +        for (int i = 0; i < rs.length; i++) rs[i] = new Noop(m);
2840 +
2841 +        final CompletableFuture<Void> h0 = m.runAfterEither(f, g, rs[0]);
2842 +        final CompletableFuture<Void> h1 = m.runAfterEither(g, f, rs[1]);
2843 +        checkIncomplete(h0);
2844 +        checkIncomplete(h1);
2845 +        rs[0].assertNotInvoked();
2846 +        rs[1].assertNotInvoked();
2847 +        f.cancel(mayInterruptIfRunning);
2848 +        checkCompletedWithWrappedCancellationException(h0);
2849 +        checkCompletedWithWrappedCancellationException(h1);
2850 +        final CompletableFuture<Void> h2 = m.runAfterEither(f, g, rs[2]);
2851 +        final CompletableFuture<Void> h3 = m.runAfterEither(g, f, rs[3]);
2852 +        checkCompletedWithWrappedCancellationException(h2);
2853 +        checkCompletedWithWrappedCancellationException(h3);
2854 +
2855 +        assertTrue(g.complete(v1));
2856 +
2857 +        // unspecified behavior - both source completions available
2858 +        final CompletableFuture<Void> h4 = m.runAfterEither(f, g, rs[4]);
2859 +        final CompletableFuture<Void> h5 = m.runAfterEither(g, f, rs[5]);
2860 +        try {
2861 +            assertNull(h4.join());
2862 +            rs[4].assertInvoked();
2863 +        } catch (CompletionException ok) {
2864 +            checkCompletedWithWrappedCancellationException(h4);
2865 +            rs[4].assertNotInvoked();
2866 +        }
2867 +        try {
2868 +            assertNull(h5.join());
2869 +            rs[5].assertInvoked();
2870 +        } catch (CompletionException ok) {
2871 +            checkCompletedWithWrappedCancellationException(h5);
2872 +            rs[5].assertNotInvoked();
2873 +        }
2874 +
2875 +        checkCancelled(f);
2876 +        checkCompletedNormally(g, v1);
2877 +        checkCompletedWithWrappedCancellationException(h0);
2878 +        checkCompletedWithWrappedCancellationException(h1);
2879 +        checkCompletedWithWrappedCancellationException(h2);
2880 +        checkCompletedWithWrappedCancellationException(h3);
2881 +        for (int i = 0; i < 4; i++) rs[i].assertNotInvoked();
2882 +    }}
2883 +
2884 +    /**
2885 +     * runAfterEither result completes exceptionally if action does
2886 +     */
2887 +    public void testRunAfterEither_actionFailed() {
2888 +        for (ExecutionMode m : ExecutionMode.values())
2889 +        for (Integer v1 : new Integer[] { 1, null })
2890 +        for (Integer v2 : new Integer[] { 2, null })
2891 +    {
2892 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2893 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2894 +        final FailingRunnable[] rs = new FailingRunnable[6];
2895 +        for (int i = 0; i < rs.length; i++) rs[i] = new FailingRunnable(m);
2896 +
2897 +        final CompletableFuture<Void> h0 = m.runAfterEither(f, g, rs[0]);
2898 +        final CompletableFuture<Void> h1 = m.runAfterEither(g, f, rs[1]);
2899 +        assertTrue(f.complete(v1));
2900 +        final CompletableFuture<Void> h2 = m.runAfterEither(f, g, rs[2]);
2901 +        final CompletableFuture<Void> h3 = m.runAfterEither(g, f, rs[3]);
2902 +        checkCompletedWithWrappedCFException(h0);
2903 +        checkCompletedWithWrappedCFException(h1);
2904 +        checkCompletedWithWrappedCFException(h2);
2905 +        checkCompletedWithWrappedCFException(h3);
2906 +        for (int i = 0; i < 4; i++) rs[i].assertInvoked();
2907 +        assertTrue(g.complete(v2));
2908 +        final CompletableFuture<Void> h4 = m.runAfterEither(f, g, rs[4]);
2909 +        final CompletableFuture<Void> h5 = m.runAfterEither(g, f, rs[5]);
2910 +        checkCompletedWithWrappedCFException(h4);
2911 +        checkCompletedWithWrappedCFException(h5);
2912 +
2913 +        checkCompletedNormally(f, v1);
2914 +        checkCompletedNormally(g, v2);
2915 +        for (int i = 0; i < 6; i++) rs[i].assertInvoked();
2916 +    }}
2917 +
2918 +    /**
2919 +     * thenCompose result completes normally after normal completion of source
2920 +     */
2921 +    public void testThenCompose_normalCompletion() {
2922 +        for (ExecutionMode m : ExecutionMode.values())
2923 +        for (boolean createIncomplete : new boolean[] { true, false })
2924 +        for (Integer v1 : new Integer[] { 1, null })
2925 +    {
2926 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2927 +        final CompletableFutureInc r = new CompletableFutureInc(m);
2928 +        if (!createIncomplete) assertTrue(f.complete(v1));
2929 +        final CompletableFuture<Integer> g = m.thenCompose(f, r);
2930 +        if (createIncomplete) assertTrue(f.complete(v1));
2931 +
2932 +        checkCompletedNormally(g, inc(v1));
2933 +        checkCompletedNormally(f, v1);
2934 +        r.assertValue(v1);
2935 +    }}
2936 +
2937 +    /**
2938 +     * thenCompose result completes exceptionally after exceptional
2939 +     * completion of source
2940 +     */
2941 +    public void testThenCompose_exceptionalCompletion() {
2942 +        for (ExecutionMode m : ExecutionMode.values())
2943 +        for (boolean createIncomplete : new boolean[] { true, false })
2944 +    {
2945 +        final CFException ex = new CFException();
2946 +        final CompletableFutureInc r = new CompletableFutureInc(m);
2947 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2948 +        if (!createIncomplete) f.completeExceptionally(ex);
2949 +        final CompletableFuture<Integer> g = m.thenCompose(f, r);
2950 +        if (createIncomplete) f.completeExceptionally(ex);
2951 +
2952 +        checkCompletedWithWrappedException(g, ex);
2953 +        checkCompletedExceptionally(f, ex);
2954 +        r.assertNotInvoked();
2955 +    }}
2956 +
2957 +    /**
2958 +     * thenCompose result completes exceptionally if action does
2959 +     */
2960 +    public void testThenCompose_actionFailed() {
2961 +        for (ExecutionMode m : ExecutionMode.values())
2962 +        for (boolean createIncomplete : new boolean[] { true, false })
2963 +        for (Integer v1 : new Integer[] { 1, null })
2964 +    {
2965 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2966 +        final FailingCompletableFutureFunction r
2967 +            = new FailingCompletableFutureFunction(m);
2968 +        if (!createIncomplete) assertTrue(f.complete(v1));
2969 +        final CompletableFuture<Integer> g = m.thenCompose(f, r);
2970 +        if (createIncomplete) assertTrue(f.complete(v1));
2971 +
2972 +        checkCompletedWithWrappedCFException(g);
2973 +        checkCompletedNormally(f, v1);
2974 +    }}
2975 +
2976 +    /**
2977 +     * thenCompose result completes exceptionally if source cancelled
2978 +     */
2979 +    public void testThenCompose_sourceCancelled() {
2980 +        for (ExecutionMode m : ExecutionMode.values())
2981 +        for (boolean createIncomplete : new boolean[] { true, false })
2982 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2983 +    {
2984 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2985 +        final CompletableFutureInc r = new CompletableFutureInc(m);
2986 +        if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
2987 +        final CompletableFuture<Integer> g = m.thenCompose(f, r);
2988 +        if (createIncomplete) {
2989 +            checkIncomplete(g);
2990 +            assertTrue(f.cancel(mayInterruptIfRunning));
2991 +        }
2992 +
2993 +        checkCompletedWithWrappedCancellationException(g);
2994 +        checkCancelled(f);
2995 +    }}
2996 +
2997 +    // other static methods
2998 +
2999 +    /**
3000 +     * allOf(no component futures) returns a future completed normally
3001 +     * with the value null
3002 +     */
3003 +    public void testAllOf_empty() throws Exception {
3004 +        CompletableFuture<Void> f = CompletableFuture.allOf();
3005 +        checkCompletedNormally(f, null);
3006 +    }
3007 +
3008 +    /**
3009 +     * allOf returns a future completed normally with the value null
3010 +     * when all components complete normally
3011 +     */
3012 +    public void testAllOf_normal() throws Exception {
3013 +        for (int k = 1; k < 10; k++) {
3014 +            CompletableFuture<Integer>[] fs
3015 +                = (CompletableFuture<Integer>[]) new CompletableFuture[k];
3016 +            for (int i = 0; i < k; i++)
3017 +                fs[i] = new CompletableFuture<>();
3018 +            CompletableFuture<Void> f = CompletableFuture.allOf(fs);
3019 +            for (int i = 0; i < k; i++) {
3020 +                checkIncomplete(f);
3021 +                checkIncomplete(CompletableFuture.allOf(fs));
3022 +                fs[i].complete(one);
3023 +            }
3024 +            checkCompletedNormally(f, null);
3025 +            checkCompletedNormally(CompletableFuture.allOf(fs), null);
3026 +        }
3027 +    }
3028 +
3029 +    public void testAllOf_backwards() throws Exception {
3030 +        for (int k = 1; k < 10; k++) {
3031 +            CompletableFuture<Integer>[] fs
3032 +                = (CompletableFuture<Integer>[]) new CompletableFuture[k];
3033 +            for (int i = 0; i < k; i++)
3034 +                fs[i] = new CompletableFuture<>();
3035 +            CompletableFuture<Void> f = CompletableFuture.allOf(fs);
3036 +            for (int i = k - 1; i >= 0; i--) {
3037 +                checkIncomplete(f);
3038 +                checkIncomplete(CompletableFuture.allOf(fs));
3039 +                fs[i].complete(one);
3040 +            }
3041 +            checkCompletedNormally(f, null);
3042 +            checkCompletedNormally(CompletableFuture.allOf(fs), null);
3043 +        }
3044 +    }
3045 +
3046 +    public void testAllOf_exceptional() throws Exception {
3047 +        for (int k = 1; k < 10; k++) {
3048 +            CompletableFuture<Integer>[] fs
3049 +                = (CompletableFuture<Integer>[]) new CompletableFuture[k];
3050 +            CFException ex = new CFException();
3051 +            for (int i = 0; i < k; i++)
3052 +                fs[i] = new CompletableFuture<>();
3053 +            CompletableFuture<Void> f = CompletableFuture.allOf(fs);
3054 +            for (int i = 0; i < k; i++) {
3055 +                checkIncomplete(f);
3056 +                checkIncomplete(CompletableFuture.allOf(fs));
3057 +                if (i != k/2) {
3058 +                    fs[i].complete(i);
3059 +                    checkCompletedNormally(fs[i], i);
3060 +                } else {
3061 +                    fs[i].completeExceptionally(ex);
3062 +                    checkCompletedExceptionally(fs[i], ex);
3063 +                }
3064 +            }
3065 +            checkCompletedWithWrappedException(f, ex);
3066 +            checkCompletedWithWrappedException(CompletableFuture.allOf(fs), ex);
3067 +        }
3068 +    }
3069 +
3070 +    /**
3071 +     * anyOf(no component futures) returns an incomplete future
3072 +     */
3073 +    public void testAnyOf_empty() throws Exception {
3074 +        for (Integer v1 : new Integer[] { 1, null })
3075 +    {
3076 +        CompletableFuture<Object> f = CompletableFuture.anyOf();
3077 +        checkIncomplete(f);
3078 +
3079 +        f.complete(v1);
3080 +        checkCompletedNormally(f, v1);
3081 +    }}
3082 +
3083 +    /**
3084 +     * anyOf returns a future completed normally with a value when
3085 +     * a component future does
3086 +     */
3087 +    public void testAnyOf_normal() throws Exception {
3088 +        for (int k = 0; k < 10; k++) {
3089 +            CompletableFuture[] fs = new CompletableFuture[k];
3090 +            for (int i = 0; i < k; i++)
3091 +                fs[i] = new CompletableFuture<>();
3092 +            CompletableFuture<Object> f = CompletableFuture.anyOf(fs);
3093 +            checkIncomplete(f);
3094 +            for (int i = 0; i < k; i++) {
3095 +                fs[i].complete(i);
3096 +                checkCompletedNormally(f, 0);
3097 +                int x = (int) CompletableFuture.anyOf(fs).join();
3098 +                assertTrue(0 <= x && x <= i);
3099 +            }
3100 +        }
3101 +    }
3102 +    public void testAnyOf_normal_backwards() throws Exception {
3103 +        for (int k = 0; k < 10; k++) {
3104 +            CompletableFuture[] fs = new CompletableFuture[k];
3105 +            for (int i = 0; i < k; i++)
3106 +                fs[i] = new CompletableFuture<>();
3107 +            CompletableFuture<Object> f = CompletableFuture.anyOf(fs);
3108 +            checkIncomplete(f);
3109 +            for (int i = k - 1; i >= 0; i--) {
3110 +                fs[i].complete(i);
3111 +                checkCompletedNormally(f, k - 1);
3112 +                int x = (int) CompletableFuture.anyOf(fs).join();
3113 +                assertTrue(i <= x && x <= k - 1);
3114 +            }
3115 +        }
3116 +    }
3117 +
3118 +    /**
3119 +     * anyOf result completes exceptionally when any component does.
3120 +     */
3121 +    public void testAnyOf_exceptional() throws Exception {
3122 +        for (int k = 0; k < 10; k++) {
3123 +            CompletableFuture[] fs = new CompletableFuture[k];
3124 +            CFException[] exs = new CFException[k];
3125 +            for (int i = 0; i < k; i++) {
3126 +                fs[i] = new CompletableFuture<>();
3127 +                exs[i] = new CFException();
3128 +            }
3129 +            CompletableFuture<Object> f = CompletableFuture.anyOf(fs);
3130 +            checkIncomplete(f);
3131 +            for (int i = 0; i < k; i++) {
3132 +                fs[i].completeExceptionally(exs[i]);
3133 +                checkCompletedWithWrappedException(f, exs[0]);
3134 +                checkCompletedWithWrappedCFException(CompletableFuture.anyOf(fs));
3135 +            }
3136 +        }
3137 +    }
3138 +
3139 +    public void testAnyOf_exceptional_backwards() throws Exception {
3140 +        for (int k = 0; k < 10; k++) {
3141 +            CompletableFuture[] fs = new CompletableFuture[k];
3142 +            CFException[] exs = new CFException[k];
3143 +            for (int i = 0; i < k; i++) {
3144 +                fs[i] = new CompletableFuture<>();
3145 +                exs[i] = new CFException();
3146 +            }
3147 +            CompletableFuture<Object> f = CompletableFuture.anyOf(fs);
3148 +            checkIncomplete(f);
3149 +            for (int i = k - 1; i >= 0; i--) {
3150 +                fs[i].completeExceptionally(exs[i]);
3151 +                checkCompletedWithWrappedException(f, exs[k - 1]);
3152 +                checkCompletedWithWrappedCFException(CompletableFuture.anyOf(fs));
3153 +            }
3154 +        }
3155 +    }
3156 +
3157 +    /**
3158 +     * Completion methods throw NullPointerException with null arguments
3159 +     */
3160 +    public void testNPE() {
3161 +        CompletableFuture<Integer> f = new CompletableFuture<>();
3162 +        CompletableFuture<Integer> g = new CompletableFuture<>();
3163 +        CompletableFuture<Integer> nullFuture = (CompletableFuture<Integer>)null;
3164 +        CompletableFuture<?> h;
3165 +        ThreadExecutor exec = new ThreadExecutor();
3166 +
3167 +        Runnable[] throwingActions = {
3168 +            () -> CompletableFuture.supplyAsync(null),
3169 +            () -> CompletableFuture.supplyAsync(null, exec),
3170 +            () -> CompletableFuture.supplyAsync(new IntegerSupplier(ExecutionMode.SYNC, 42), null),
3171 +
3172 +            () -> CompletableFuture.runAsync(null),
3173 +            () -> CompletableFuture.runAsync(null, exec),
3174 +            () -> CompletableFuture.runAsync(() -> {}, null),
3175 +
3176 +            () -> f.completeExceptionally(null),
3177 +
3178 +            () -> f.thenApply(null),
3179 +            () -> f.thenApplyAsync(null),
3180 +            () -> f.thenApplyAsync((x) -> x, null),
3181 +            () -> f.thenApplyAsync(null, exec),
3182 +
3183 +            () -> f.thenAccept(null),
3184 +            () -> f.thenAcceptAsync(null),
3185 +            () -> f.thenAcceptAsync((x) -> {} , null),
3186 +            () -> f.thenAcceptAsync(null, exec),
3187 +
3188 +            () -> f.thenRun(null),
3189 +            () -> f.thenRunAsync(null),
3190 +            () -> f.thenRunAsync(() -> {} , null),
3191 +            () -> f.thenRunAsync(null, exec),
3192 +
3193 +            () -> f.thenCombine(g, null),
3194 +            () -> f.thenCombineAsync(g, null),
3195 +            () -> f.thenCombineAsync(g, null, exec),
3196 +            () -> f.thenCombine(nullFuture, (x, y) -> x),
3197 +            () -> f.thenCombineAsync(nullFuture, (x, y) -> x),
3198 +            () -> f.thenCombineAsync(nullFuture, (x, y) -> x, exec),
3199 +            () -> f.thenCombineAsync(g, (x, y) -> x, null),
3200 +
3201 +            () -> f.thenAcceptBoth(g, null),
3202 +            () -> f.thenAcceptBothAsync(g, null),
3203 +            () -> f.thenAcceptBothAsync(g, null, exec),
3204 +            () -> f.thenAcceptBoth(nullFuture, (x, y) -> {}),
3205 +            () -> f.thenAcceptBothAsync(nullFuture, (x, y) -> {}),
3206 +            () -> f.thenAcceptBothAsync(nullFuture, (x, y) -> {}, exec),
3207 +            () -> f.thenAcceptBothAsync(g, (x, y) -> {}, null),
3208 +
3209 +            () -> f.runAfterBoth(g, null),
3210 +            () -> f.runAfterBothAsync(g, null),
3211 +            () -> f.runAfterBothAsync(g, null, exec),
3212 +            () -> f.runAfterBoth(nullFuture, () -> {}),
3213 +            () -> f.runAfterBothAsync(nullFuture, () -> {}),
3214 +            () -> f.runAfterBothAsync(nullFuture, () -> {}, exec),
3215 +            () -> f.runAfterBothAsync(g, () -> {}, null),
3216 +
3217 +            () -> f.applyToEither(g, null),
3218 +            () -> f.applyToEitherAsync(g, null),
3219 +            () -> f.applyToEitherAsync(g, null, exec),
3220 +            () -> f.applyToEither(nullFuture, (x) -> x),
3221 +            () -> f.applyToEitherAsync(nullFuture, (x) -> x),
3222 +            () -> f.applyToEitherAsync(nullFuture, (x) -> x, exec),
3223 +            () -> f.applyToEitherAsync(g, (x) -> x, null),
3224 +
3225 +            () -> f.acceptEither(g, null),
3226 +            () -> f.acceptEitherAsync(g, null),
3227 +            () -> f.acceptEitherAsync(g, null, exec),
3228 +            () -> f.acceptEither(nullFuture, (x) -> {}),
3229 +            () -> f.acceptEitherAsync(nullFuture, (x) -> {}),
3230 +            () -> f.acceptEitherAsync(nullFuture, (x) -> {}, exec),
3231 +            () -> f.acceptEitherAsync(g, (x) -> {}, null),
3232 +
3233 +            () -> f.runAfterEither(g, null),
3234 +            () -> f.runAfterEitherAsync(g, null),
3235 +            () -> f.runAfterEitherAsync(g, null, exec),
3236 +            () -> f.runAfterEither(nullFuture, () -> {}),
3237 +            () -> f.runAfterEitherAsync(nullFuture, () -> {}),
3238 +            () -> f.runAfterEitherAsync(nullFuture, () -> {}, exec),
3239 +            () -> f.runAfterEitherAsync(g, () -> {}, null),
3240 +
3241 +            () -> f.thenCompose(null),
3242 +            () -> f.thenComposeAsync(null),
3243 +            () -> f.thenComposeAsync(new CompletableFutureInc(ExecutionMode.EXECUTOR), null),
3244 +            () -> f.thenComposeAsync(null, exec),
3245 +
3246 +            () -> f.exceptionally(null),
3247 +
3248 +            () -> f.handle(null),
3249 +
3250 +            () -> CompletableFuture.allOf((CompletableFuture<?>)null),
3251 +            () -> CompletableFuture.allOf((CompletableFuture<?>[])null),
3252 +            () -> CompletableFuture.allOf(f, null),
3253 +            () -> CompletableFuture.allOf(null, f),
3254 +
3255 +            () -> CompletableFuture.anyOf((CompletableFuture<?>)null),
3256 +            () -> CompletableFuture.anyOf((CompletableFuture<?>[])null),
3257 +            () -> CompletableFuture.anyOf(f, null),
3258 +            () -> CompletableFuture.anyOf(null, f),
3259 +
3260 +            () -> f.obtrudeException(null),
3261 +        };
3262 +
3263 +        assertThrows(NullPointerException.class, throwingActions);
3264 +        assertEquals(0, exec.count.get());
3265 +    }
3266 +
3267 +    /**
3268 +     * toCompletableFuture returns this CompletableFuture.
3269 +     */
3270 +    public void testToCompletableFuture() {
3271 +        CompletableFuture<Integer> f = new CompletableFuture<>();
3272 +        assertSame(f, f.toCompletableFuture());
3273 +    }
3274 +
3275 +    //--- tests of implementation details; not part of official tck ---
3276 +
3277 +    Object resultOf(CompletableFuture<?> f) {
3278 +        try {
3279 +            java.lang.reflect.Field resultField
3280 +                = CompletableFuture.class.getDeclaredField("result");
3281 +            resultField.setAccessible(true);
3282 +            return resultField.get(f);
3283 +        } catch (Throwable t) { throw new AssertionError(t); }
3284 +    }
3285 +
3286 +    public void testExceptionPropagationReusesResultObject() {
3287 +        if (!testImplementationDetails) return;
3288 +        for (ExecutionMode m : ExecutionMode.values())
3289 +    {
3290 +        final CFException ex = new CFException();
3291 +        final CompletableFuture<Integer> v42 = CompletableFuture.completedFuture(42);
3292 +        final CompletableFuture<Integer> incomplete = new CompletableFuture<>();
3293 +
3294 +        List<Function<CompletableFuture<Integer>, CompletableFuture<?>>> funs
3295 +            = new ArrayList<>();
3296 +
3297 +        funs.add((y) -> m.thenRun(y, new Noop(m)));
3298 +        funs.add((y) -> m.thenAccept(y, new NoopConsumer(m)));
3299 +        funs.add((y) -> m.thenApply(y, new IncFunction(m)));
3300 +
3301 +        funs.add((y) -> m.runAfterEither(y, incomplete, new Noop(m)));
3302 +        funs.add((y) -> m.acceptEither(y, incomplete, new NoopConsumer(m)));
3303 +        funs.add((y) -> m.applyToEither(y, incomplete, new IncFunction(m)));
3304 +
3305 +        funs.add((y) -> m.runAfterBoth(y, v42, new Noop(m)));
3306 +        funs.add((y) -> m.thenAcceptBoth(y, v42, new SubtractAction(m)));
3307 +        funs.add((y) -> m.thenCombine(y, v42, new SubtractFunction(m)));
3308 +
3309 +        funs.add((y) -> m.whenComplete(y, (Integer x, Throwable t) -> {}));
3310 +
3311 +        funs.add((y) -> m.thenCompose(y, new CompletableFutureInc(m)));
3312 +
3313 +        funs.add((y) -> CompletableFuture.allOf(new CompletableFuture<?>[] {y, v42}));
3314 +        funs.add((y) -> CompletableFuture.anyOf(new CompletableFuture<?>[] {y, incomplete}));
3315 +
3316 +        for (Function<CompletableFuture<Integer>, CompletableFuture<?>>
3317 +                 fun : funs) {
3318 +            CompletableFuture<Integer> f = new CompletableFuture<>();
3319 +            f.completeExceptionally(ex);
3320 +            CompletableFuture<Integer> src = m.thenApply(f, new IncFunction(m));
3321 +            checkCompletedWithWrappedException(src, ex);
3322 +            CompletableFuture<?> dep = fun.apply(src);
3323 +            checkCompletedWithWrappedException(dep, ex);
3324 +            assertSame(resultOf(src), resultOf(dep));
3325 +        }
3326 +
3327 +        for (Function<CompletableFuture<Integer>, CompletableFuture<?>>
3328 +                 fun : funs) {
3329 +            CompletableFuture<Integer> f = new CompletableFuture<>();
3330 +            CompletableFuture<Integer> src = m.thenApply(f, new IncFunction(m));
3331 +            CompletableFuture<?> dep = fun.apply(src);
3332 +            f.completeExceptionally(ex);
3333 +            checkCompletedWithWrappedException(src, ex);
3334 +            checkCompletedWithWrappedException(dep, ex);
3335 +            assertSame(resultOf(src), resultOf(dep));
3336 +        }
3337 +
3338 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
3339 +        for (Function<CompletableFuture<Integer>, CompletableFuture<?>>
3340 +                 fun : funs) {
3341 +            CompletableFuture<Integer> f = new CompletableFuture<>();
3342 +            f.cancel(mayInterruptIfRunning);
3343 +            checkCancelled(f);
3344 +            CompletableFuture<Integer> src = m.thenApply(f, new IncFunction(m));
3345 +            checkCompletedWithWrappedCancellationException(src);
3346 +            CompletableFuture<?> dep = fun.apply(src);
3347 +            checkCompletedWithWrappedCancellationException(dep);
3348 +            assertSame(resultOf(src), resultOf(dep));
3349 +        }
3350 +
3351 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
3352 +        for (Function<CompletableFuture<Integer>, CompletableFuture<?>>
3353 +                 fun : funs) {
3354 +            CompletableFuture<Integer> f = new CompletableFuture<>();
3355 +            CompletableFuture<Integer> src = m.thenApply(f, new IncFunction(m));
3356 +            CompletableFuture<?> dep = fun.apply(src);
3357 +            f.cancel(mayInterruptIfRunning);
3358 +            checkCancelled(f);
3359 +            checkCompletedWithWrappedCancellationException(src);
3360 +            checkCompletedWithWrappedCancellationException(dep);
3361 +            assertSame(resultOf(src), resultOf(dep));
3362 +        }
3363 +    }}
3364 +
3365   }

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