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Comparing jsr166/src/test/tck/CompletableFutureTest.java (file contents):
Revision 1.2 by jsr166, Wed Feb 6 20:29:55 2013 UTC vs.
Revision 1.48 by jsr166, Mon Jun 2 19:07:14 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.*;
9   import java.util.concurrent.Callable;
10 + import java.util.concurrent.Executor;
11 + import java.util.concurrent.ExecutorService;
12 + import java.util.concurrent.Executors;
13   import java.util.concurrent.CancellationException;
14   import java.util.concurrent.CountDownLatch;
15   import java.util.concurrent.ExecutionException;
16   import java.util.concurrent.Future;
17   import java.util.concurrent.CompletableFuture;
18 + import java.util.concurrent.CompletionException;
19 + import java.util.concurrent.CompletionStage;
20 + import java.util.concurrent.ForkJoinPool;
21 + import java.util.concurrent.ForkJoinTask;
22   import java.util.concurrent.TimeoutException;
23   import java.util.concurrent.atomic.AtomicInteger;
24   import static java.util.concurrent.TimeUnit.MILLISECONDS;
25   import static java.util.concurrent.TimeUnit.SECONDS;
26   import java.util.*;
27 + import java.util.function.Supplier;
28 + import java.util.function.Consumer;
29 + import java.util.function.BiConsumer;
30 + import java.util.function.Function;
31 + import java.util.function.BiFunction;
32  
33   public class CompletableFutureTest extends JSR166TestCase {
34  
# Line 28 | Line 39 | public class CompletableFutureTest exten
39          return new TestSuite(CompletableFutureTest.class);
40      }
41  
42 +    static class CFException extends RuntimeException {}
43 +
44 +    void checkIncomplete(CompletableFuture<?> f) {
45 +        assertFalse(f.isDone());
46 +        assertFalse(f.isCancelled());
47 +        assertTrue(f.toString().contains("[Not completed]"));
48 +        try {
49 +            assertNull(f.getNow(null));
50 +        } catch (Throwable fail) { threadUnexpectedException(fail); }
51 +        try {
52 +            f.get(0L, SECONDS);
53 +            shouldThrow();
54 +        }
55 +        catch (TimeoutException success) {}
56 +        catch (Throwable fail) { threadUnexpectedException(fail); }
57 +    }
58 +
59 +    <T> void checkCompletedNormally(CompletableFuture<T> f, T value) {
60 +        try {
61 +            assertEquals(value, f.get(LONG_DELAY_MS, MILLISECONDS));
62 +        } catch (Throwable fail) { threadUnexpectedException(fail); }
63 +        try {
64 +            assertEquals(value, f.join());
65 +        } catch (Throwable fail) { threadUnexpectedException(fail); }
66 +        try {
67 +            assertEquals(value, f.getNow(null));
68 +        } catch (Throwable fail) { threadUnexpectedException(fail); }
69 +        try {
70 +            assertEquals(value, f.get());
71 +        } catch (Throwable fail) { threadUnexpectedException(fail); }
72 +        assertTrue(f.isDone());
73 +        assertFalse(f.isCancelled());
74 +        assertFalse(f.isCompletedExceptionally());
75 +        assertTrue(f.toString().contains("[Completed normally]"));
76 +    }
77 +
78 +    void checkCompletedWithWrappedCFException(CompletableFuture<?> f) {
79 +        try {
80 +            f.get(LONG_DELAY_MS, MILLISECONDS);
81 +            shouldThrow();
82 +        } catch (ExecutionException success) {
83 +            assertTrue(success.getCause() instanceof CFException);
84 +        } catch (Throwable fail) { threadUnexpectedException(fail); }
85 +        try {
86 +            f.join();
87 +            shouldThrow();
88 +        } catch (CompletionException success) {
89 +            assertTrue(success.getCause() instanceof CFException);
90 +        }
91 +        try {
92 +            f.getNow(null);
93 +            shouldThrow();
94 +        } catch (CompletionException success) {
95 +            assertTrue(success.getCause() instanceof CFException);
96 +        }
97 +        try {
98 +            f.get();
99 +            shouldThrow();
100 +        } catch (ExecutionException success) {
101 +            assertTrue(success.getCause() instanceof CFException);
102 +        } catch (Throwable fail) { threadUnexpectedException(fail); }
103 +        assertTrue(f.isDone());
104 +        assertFalse(f.isCancelled());
105 +        assertTrue(f.toString().contains("[Completed exceptionally]"));
106 +    }
107 +
108 +    void checkCompletedWithWrappedCFException(CompletableFuture<?> f,
109 +                                              CFException ex) {
110 +        try {
111 +            f.get(LONG_DELAY_MS, MILLISECONDS);
112 +            shouldThrow();
113 +        } catch (ExecutionException success) {
114 +            assertSame(ex, success.getCause());
115 +        } catch (Throwable fail) { threadUnexpectedException(fail); }
116 +        try {
117 +            f.join();
118 +            shouldThrow();
119 +        } catch (CompletionException success) {
120 +            assertSame(ex, success.getCause());
121 +        }
122 +        try {
123 +            f.getNow(null);
124 +            shouldThrow();
125 +        } catch (CompletionException success) {
126 +            assertSame(ex, success.getCause());
127 +        }
128 +        try {
129 +            f.get();
130 +            shouldThrow();
131 +        } catch (ExecutionException success) {
132 +            assertSame(ex, success.getCause());
133 +        } catch (Throwable fail) { threadUnexpectedException(fail); }
134 +        assertTrue(f.isDone());
135 +        assertFalse(f.isCancelled());
136 +        assertTrue(f.toString().contains("[Completed exceptionally]"));
137 +    }
138 +
139 +    void checkCancelled(CompletableFuture<?> f) {
140 +        try {
141 +            f.get(LONG_DELAY_MS, MILLISECONDS);
142 +            shouldThrow();
143 +        } catch (CancellationException success) {
144 +        } catch (Throwable fail) { threadUnexpectedException(fail); }
145 +        try {
146 +            f.join();
147 +            shouldThrow();
148 +        } catch (CancellationException success) {}
149 +        try {
150 +            f.getNow(null);
151 +            shouldThrow();
152 +        } catch (CancellationException success) {}
153 +        try {
154 +            f.get();
155 +            shouldThrow();
156 +        } catch (CancellationException success) {
157 +        } catch (Throwable fail) { threadUnexpectedException(fail); }
158 +        assertTrue(f.isDone());
159 +        assertTrue(f.isCompletedExceptionally());
160 +        assertTrue(f.isCancelled());
161 +        assertTrue(f.toString().contains("[Completed exceptionally]"));
162 +    }
163 +
164 +    void checkCompletedWithWrappedCancellationException(CompletableFuture<?> f) {
165 +        try {
166 +            f.get(LONG_DELAY_MS, MILLISECONDS);
167 +            shouldThrow();
168 +        } catch (ExecutionException success) {
169 +            assertTrue(success.getCause() instanceof CancellationException);
170 +        } catch (Throwable fail) { threadUnexpectedException(fail); }
171 +        try {
172 +            f.join();
173 +            shouldThrow();
174 +        } catch (CompletionException success) {
175 +            assertTrue(success.getCause() instanceof CancellationException);
176 +        }
177 +        try {
178 +            f.getNow(null);
179 +            shouldThrow();
180 +        } catch (CompletionException success) {
181 +            assertTrue(success.getCause() instanceof CancellationException);
182 +        }
183 +        try {
184 +            f.get();
185 +            shouldThrow();
186 +        } catch (ExecutionException success) {
187 +            assertTrue(success.getCause() instanceof CancellationException);
188 +        } catch (Throwable fail) { threadUnexpectedException(fail); }
189 +        assertTrue(f.isDone());
190 +        assertFalse(f.isCancelled());
191 +        assertTrue(f.isCompletedExceptionally());
192 +        assertTrue(f.toString().contains("[Completed exceptionally]"));
193 +    }
194 +
195 +    /**
196 +     * A newly constructed CompletableFuture is incomplete, as indicated
197 +     * by methods isDone, isCancelled, and getNow
198 +     */
199 +    public void testConstructor() {
200 +        CompletableFuture<Integer> f = new CompletableFuture<>();
201 +        checkIncomplete(f);
202 +    }
203 +
204 +    /**
205 +     * complete completes normally, as indicated by methods isDone,
206 +     * isCancelled, join, get, and getNow
207 +     */
208 +    public void testComplete() {
209 +        CompletableFuture<Integer> f = new CompletableFuture<>();
210 +        checkIncomplete(f);
211 +        f.complete(one);
212 +        checkCompletedNormally(f, one);
213 +    }
214 +
215 +    /**
216 +     * completeExceptionally completes exceptionally, as indicated by
217 +     * methods isDone, isCancelled, join, get, and getNow
218 +     */
219 +    public void testCompleteExceptionally() {
220 +        CompletableFuture<Integer> f = new CompletableFuture<>();
221 +        checkIncomplete(f);
222 +        f.completeExceptionally(new CFException());
223 +        checkCompletedWithWrappedCFException(f);
224 +    }
225 +
226 +    /**
227 +     * cancel completes exceptionally and reports cancelled, as indicated by
228 +     * methods isDone, isCancelled, join, get, and getNow
229 +     */
230 +    public void testCancel() {
231 +        CompletableFuture<Integer> f = new CompletableFuture<>();
232 +        checkIncomplete(f);
233 +        assertTrue(f.cancel(true));
234 +        checkCancelled(f);
235 +    }
236 +
237 +    /**
238 +     * obtrudeValue forces completion with given value
239 +     */
240 +    public void testObtrudeValue() {
241 +        CompletableFuture<Integer> f = new CompletableFuture<>();
242 +        checkIncomplete(f);
243 +        f.complete(one);
244 +        checkCompletedNormally(f, one);
245 +        f.obtrudeValue(three);
246 +        checkCompletedNormally(f, three);
247 +        f.obtrudeValue(two);
248 +        checkCompletedNormally(f, two);
249 +        f = new CompletableFuture<>();
250 +        f.obtrudeValue(three);
251 +        checkCompletedNormally(f, three);
252 +        f.obtrudeValue(null);
253 +        checkCompletedNormally(f, null);
254 +        f = new CompletableFuture<>();
255 +        f.completeExceptionally(new CFException());
256 +        f.obtrudeValue(four);
257 +        checkCompletedNormally(f, four);
258 +    }
259 +
260 +    /**
261 +     * obtrudeException forces completion with given exception
262 +     */
263 +    public void testObtrudeException() {
264 +        CompletableFuture<Integer> f = new CompletableFuture<>();
265 +        checkIncomplete(f);
266 +        f.complete(one);
267 +        checkCompletedNormally(f, one);
268 +        f.obtrudeException(new CFException());
269 +        checkCompletedWithWrappedCFException(f);
270 +        f = new CompletableFuture<>();
271 +        f.obtrudeException(new CFException());
272 +        checkCompletedWithWrappedCFException(f);
273 +        f = new CompletableFuture<>();
274 +        f.completeExceptionally(new CFException());
275 +        f.obtrudeValue(four);
276 +        checkCompletedNormally(f, four);
277 +        f.obtrudeException(new CFException());
278 +        checkCompletedWithWrappedCFException(f);
279 +    }
280 +
281 +    /**
282 +     * getNumberOfDependents returns number of dependent tasks
283 +     */
284 +    public void testGetNumberOfDependents() {
285 +        CompletableFuture<Integer> f = new CompletableFuture<>();
286 +        assertEquals(0, f.getNumberOfDependents());
287 +        CompletableFuture g = f.thenRun(new Noop());
288 +        assertEquals(1, f.getNumberOfDependents());
289 +        assertEquals(0, g.getNumberOfDependents());
290 +        CompletableFuture h = f.thenRun(new Noop());
291 +        assertEquals(2, f.getNumberOfDependents());
292 +        f.complete(1);
293 +        checkCompletedNormally(g, null);
294 +        assertEquals(0, f.getNumberOfDependents());
295 +        assertEquals(0, g.getNumberOfDependents());
296 +    }
297 +
298 +    /**
299 +     * toString indicates current completion state
300 +     */
301      public void testToString() {
302          CompletableFuture<String> f;
303  
# Line 41 | Line 311 | public class CompletableFutureTest exten
311          f.completeExceptionally(new IndexOutOfBoundsException());
312          assertTrue(f.toString().contains("[Completed exceptionally]"));
313      }
314 +
315 +    /**
316 +     * completedFuture returns a completed CompletableFuture with given value
317 +     */
318 +    public void testCompletedFuture() {
319 +        CompletableFuture<String> f = CompletableFuture.completedFuture("test");
320 +        checkCompletedNormally(f, "test");
321 +    }
322 +
323 +    // Choose non-commutative actions for better coverage
324 +
325 +    // A non-commutative function that handles and produces null values as well.
326 +    static Integer subtract(Integer x, Integer y) {
327 +        return (x == null && y == null) ? null :
328 +            ((x == null) ? 42 : x.intValue())
329 +            - ((y == null) ? 99 : y.intValue());
330 +    }
331 +
332 +    // A function that handles and produces null values as well.
333 +    static Integer inc(Integer x) {
334 +        return (x == null) ? null : x + 1;
335 +    }
336 +
337 +    static final Supplier<Integer> supplyOne =
338 +        () -> Integer.valueOf(1);
339 +    static final Function<Integer, Integer> inc =
340 +        (Integer x) -> Integer.valueOf(x.intValue() + 1);
341 +    static final BiFunction<Integer, Integer, Integer> subtract =
342 +        (Integer x, Integer y) -> subtract(x, y);
343 +    static final class IncAction implements Consumer<Integer> {
344 +        int invocationCount = 0;
345 +        Integer value;
346 +        public void accept(Integer x) {
347 +            invocationCount++;
348 +            value = inc(x);
349 +        }
350 +    }
351 +    static final class IncFunction implements Function<Integer,Integer> {
352 +        int invocationCount = 0;
353 +        Integer value;
354 +        public Integer apply(Integer x) {
355 +            invocationCount++;
356 +            return value = inc(x);
357 +        }
358 +    }
359 +    static final class SubtractAction implements BiConsumer<Integer, Integer> {
360 +        int invocationCount = 0;
361 +        Integer value;
362 +        // Check this action was invoked exactly once when result is computed.
363 +        public void accept(Integer x, Integer y) {
364 +            invocationCount++;
365 +            value = subtract(x, y);
366 +        }
367 +    }
368 +    static final class SubtractFunction implements BiFunction<Integer, Integer, Integer> {
369 +        int invocationCount = 0;
370 +        Integer value;
371 +        // Check this action was invoked exactly once when result is computed.
372 +        public Integer apply(Integer x, Integer y) {
373 +            invocationCount++;
374 +            return value = subtract(x, y);
375 +        }
376 +    }
377 +    static final class Noop implements Runnable {
378 +        int invocationCount = 0;
379 +        public void run() {
380 +            invocationCount++;
381 +        }
382 +    }
383 +
384 +    static final class FailingSupplier implements Supplier<Integer> {
385 +        int invocationCount = 0;
386 +        public Integer get() {
387 +            invocationCount++;
388 +            throw new CFException();
389 +        }
390 +    }
391 +    static final class FailingConsumer implements Consumer<Integer> {
392 +        int invocationCount = 0;
393 +        public void accept(Integer x) {
394 +            invocationCount++;
395 +            throw new CFException();
396 +        }
397 +    }
398 +    static final class FailingBiConsumer implements BiConsumer<Integer, Integer> {
399 +        int invocationCount = 0;
400 +        public void accept(Integer x, Integer y) {
401 +            invocationCount++;
402 +            throw new CFException();
403 +        }
404 +    }
405 +    static final class FailingFunction implements Function<Integer, Integer> {
406 +        int invocationCount = 0;
407 +        public Integer apply(Integer x) {
408 +            invocationCount++;
409 +            throw new CFException();
410 +        }
411 +    }
412 +    static final class FailingBiFunction implements BiFunction<Integer, Integer, Integer> {
413 +        int invocationCount = 0;
414 +        public Integer apply(Integer x, Integer y) {
415 +            invocationCount++;
416 +            throw new CFException();
417 +        }
418 +    }
419 +    static final class FailingNoop implements Runnable {
420 +        int invocationCount = 0;
421 +        public void run() {
422 +            invocationCount++;
423 +            throw new CFException();
424 +        }
425 +    }
426 +
427 +    static final class CompletableFutureInc
428 +        implements Function<Integer, CompletableFuture<Integer>> {
429 +        int invocationCount = 0;
430 +        public CompletableFuture<Integer> apply(Integer x) {
431 +            invocationCount++;
432 +            CompletableFuture<Integer> f = new CompletableFuture<>();
433 +            f.complete(inc(x));
434 +            return f;
435 +        }
436 +    }
437 +
438 +    static final class FailingCompletableFutureFunction
439 +        implements Function<Integer, CompletableFuture<Integer>> {
440 +        int invocationCount = 0;
441 +        public CompletableFuture<Integer> apply(Integer x) {
442 +            invocationCount++;
443 +            throw new CFException();
444 +        }
445 +    }
446 +
447 +    // Used for explicit executor tests
448 +    static final class ThreadExecutor implements Executor {
449 +        AtomicInteger count = new AtomicInteger(0);
450 +
451 +        public void execute(Runnable r) {
452 +            count.getAndIncrement();
453 +            new Thread(r).start();
454 +        }
455 +    }
456 +
457 +    /**
458 +     * Permits the testing of parallel code for the 3 different
459 +     * execution modes without repeating all the testing code.
460 +     */
461 +    enum ExecutionMode {
462 +        DEFAULT {
463 +            public void checkExecutionMode() {
464 +                assertNull(ForkJoinTask.getPool());
465 +            }
466 +            public <T> CompletableFuture<Void> thenRun
467 +                (CompletableFuture<T> f, Runnable a) {
468 +                return f.thenRun(a);
469 +            }
470 +            public <T> CompletableFuture<Void> thenAccept
471 +                (CompletableFuture<T> f, Consumer<? super T> a) {
472 +                return f.thenAccept(a);
473 +            }
474 +            public <T,U> CompletableFuture<U> thenApply
475 +                (CompletableFuture<T> f, Function<? super T,U> a) {
476 +                return f.thenApply(a);
477 +            }
478 +            public <T,U> CompletableFuture<U> thenCompose
479 +                (CompletableFuture<T> f,
480 +                 Function<? super T,? extends CompletionStage<U>> a) {
481 +                return f.thenCompose(a);
482 +            }
483 +            public <T,U> CompletableFuture<U> handle
484 +                (CompletableFuture<T> f,
485 +                 BiFunction<? super T,Throwable,? extends U> a) {
486 +                return f.handle(a);
487 +            }
488 +            public <T> CompletableFuture<T> whenComplete
489 +                (CompletableFuture<T> f,
490 +                 BiConsumer<? super T,? super Throwable> a) {
491 +                return f.whenComplete(a);
492 +            }
493 +            public <T,U> CompletableFuture<Void> runAfterBoth
494 +                (CompletableFuture<T> f, CompletableFuture<U> g, Runnable a) {
495 +                return f.runAfterBoth(g, a);
496 +            }
497 +            public <T,U> CompletableFuture<Void> thenAcceptBoth
498 +                (CompletableFuture<T> f,
499 +                 CompletionStage<? extends U> g,
500 +                 BiConsumer<? super T,? super U> a) {
501 +                return f.thenAcceptBoth(g, a);
502 +            }
503 +            public <T,U,V> CompletableFuture<V> thenCombine
504 +                (CompletableFuture<T> f,
505 +                 CompletionStage<? extends U> g,
506 +                 BiFunction<? super T,? super U,? extends V> a) {
507 +                return f.thenCombine(g, a);
508 +            }
509 +            public <T> CompletableFuture<Void> runAfterEither
510 +                (CompletableFuture<T> f,
511 +                 CompletionStage<?> g,
512 +                 java.lang.Runnable a) {
513 +                return f.runAfterEither(g, a);
514 +            }
515 +            public <T> CompletableFuture<Void> acceptEither
516 +                (CompletableFuture<T> f,
517 +                 CompletionStage<? extends T> g,
518 +                 Consumer<? super T> a) {
519 +                return f.acceptEither(g, a);
520 +            }
521 +            public <T,U> CompletableFuture<U> applyToEither
522 +                (CompletableFuture<T> f,
523 +                 CompletionStage<? extends T> g,
524 +                 Function<? super T,U> a) {
525 +                return f.applyToEither(g, a);
526 +            }
527 +        },
528 +
529 +        ASYNC {
530 +            public void checkExecutionMode() {
531 +                assertSame(ForkJoinPool.commonPool(),
532 +                           ForkJoinTask.getPool());
533 +            }
534 +            public <T> CompletableFuture<Void> thenRun
535 +                (CompletableFuture<T> f, Runnable a) {
536 +                return f.thenRunAsync(a);
537 +            }
538 +            public <T> CompletableFuture<Void> thenAccept
539 +                (CompletableFuture<T> f, Consumer<? super T> a) {
540 +                return f.thenAcceptAsync(a);
541 +            }
542 +            public <T,U> CompletableFuture<U> thenApply
543 +                (CompletableFuture<T> f, Function<? super T,U> a) {
544 +                return f.thenApplyAsync(a);
545 +            }
546 +            public <T,U> CompletableFuture<U> thenCompose
547 +                (CompletableFuture<T> f,
548 +                 Function<? super T,? extends CompletionStage<U>> a) {
549 +                return f.thenComposeAsync(a);
550 +            }
551 +            public <T,U> CompletableFuture<U> handle
552 +                (CompletableFuture<T> f,
553 +                 BiFunction<? super T,Throwable,? extends U> a) {
554 +                return f.handleAsync(a);
555 +            }
556 +            public <T> CompletableFuture<T> whenComplete
557 +                (CompletableFuture<T> f,
558 +                 BiConsumer<? super T,? super Throwable> a) {
559 +                return f.whenCompleteAsync(a);
560 +            }
561 +            public <T,U> CompletableFuture<Void> runAfterBoth
562 +                (CompletableFuture<T> f, CompletableFuture<U> g, Runnable a) {
563 +                return f.runAfterBothAsync(g, a);
564 +            }
565 +            public <T,U> CompletableFuture<Void> thenAcceptBoth
566 +                (CompletableFuture<T> f,
567 +                 CompletionStage<? extends U> g,
568 +                 BiConsumer<? super T,? super U> a) {
569 +                return f.thenAcceptBothAsync(g, a);
570 +            }
571 +            public <T,U,V> CompletableFuture<V> thenCombine
572 +                (CompletableFuture<T> f,
573 +                 CompletionStage<? extends U> g,
574 +                 BiFunction<? super T,? super U,? extends V> a) {
575 +                return f.thenCombineAsync(g, a);
576 +            }
577 +            public <T> CompletableFuture<Void> runAfterEither
578 +                (CompletableFuture<T> f,
579 +                 CompletionStage<?> g,
580 +                 java.lang.Runnable a) {
581 +                return f.runAfterEitherAsync(g, a);
582 +            }
583 +            public <T> CompletableFuture<Void> acceptEither
584 +                (CompletableFuture<T> f,
585 +                 CompletionStage<? extends T> g,
586 +                 Consumer<? super T> a) {
587 +                return f.acceptEitherAsync(g, a);
588 +            }
589 +            public <T,U> CompletableFuture<U> applyToEither
590 +                (CompletableFuture<T> f,
591 +                 CompletionStage<? extends T> g,
592 +                 Function<? super T,U> a) {
593 +                return f.applyToEitherAsync(g, a);
594 +            }
595 +        },
596 +
597 +        EXECUTOR {
598 +            public void checkExecutionMode() {
599 +                //TODO
600 +            }
601 +            public <T> CompletableFuture<Void> thenRun
602 +                (CompletableFuture<T> f, Runnable a) {
603 +                return f.thenRunAsync(a, new ThreadExecutor());
604 +            }
605 +            public <T> CompletableFuture<Void> thenAccept
606 +                (CompletableFuture<T> f, Consumer<? super T> a) {
607 +                return f.thenAcceptAsync(a, new ThreadExecutor());
608 +            }
609 +            public <T,U> CompletableFuture<U> thenApply
610 +                (CompletableFuture<T> f, Function<? super T,U> a) {
611 +                return f.thenApplyAsync(a, new ThreadExecutor());
612 +            }
613 +            public <T,U> CompletableFuture<U> thenCompose
614 +                (CompletableFuture<T> f,
615 +                 Function<? super T,? extends CompletionStage<U>> a) {
616 +                return f.thenComposeAsync(a, new ThreadExecutor());
617 +            }
618 +            public <T,U> CompletableFuture<U> handle
619 +                (CompletableFuture<T> f,
620 +                 BiFunction<? super T,Throwable,? extends U> a) {
621 +                return f.handleAsync(a, new ThreadExecutor());
622 +            }
623 +            public <T> CompletableFuture<T> whenComplete
624 +                (CompletableFuture<T> f,
625 +                 BiConsumer<? super T,? super Throwable> a) {
626 +                return f.whenCompleteAsync(a, new ThreadExecutor());
627 +            }
628 +            public <T,U> CompletableFuture<Void> runAfterBoth
629 +                (CompletableFuture<T> f, CompletableFuture<U> g, Runnable a) {
630 +                return f.runAfterBothAsync(g, a, new ThreadExecutor());
631 +            }
632 +            public <T,U> CompletableFuture<Void> thenAcceptBoth
633 +                (CompletableFuture<T> f,
634 +                 CompletionStage<? extends U> g,
635 +                 BiConsumer<? super T,? super U> a) {
636 +                return f.thenAcceptBothAsync(g, a, new ThreadExecutor());
637 +            }
638 +            public <T,U,V> CompletableFuture<V> thenCombine
639 +                (CompletableFuture<T> f,
640 +                 CompletionStage<? extends U> g,
641 +                 BiFunction<? super T,? super U,? extends V> a) {
642 +                return f.thenCombineAsync(g, a, new ThreadExecutor());
643 +            }
644 +            public <T> CompletableFuture<Void> runAfterEither
645 +                (CompletableFuture<T> f,
646 +                 CompletionStage<?> g,
647 +                 java.lang.Runnable a) {
648 +                return f.runAfterEitherAsync(g, a, new ThreadExecutor());
649 +            }
650 +            public <T> CompletableFuture<Void> acceptEither
651 +                (CompletableFuture<T> f,
652 +                 CompletionStage<? extends T> g,
653 +                 Consumer<? super T> a) {
654 +                return f.acceptEitherAsync(g, a, new ThreadExecutor());
655 +            }
656 +            public <T,U> CompletableFuture<U> applyToEither
657 +                (CompletableFuture<T> f,
658 +                 CompletionStage<? extends T> g,
659 +                 Function<? super T,U> a) {
660 +                return f.applyToEitherAsync(g, a, new ThreadExecutor());
661 +            }
662 +        };
663 +
664 +        public abstract void checkExecutionMode();
665 +        public abstract <T> CompletableFuture<Void> thenRun
666 +            (CompletableFuture<T> f, Runnable a);
667 +        public abstract <T> CompletableFuture<Void> thenAccept
668 +            (CompletableFuture<T> f, Consumer<? super T> a);
669 +        public abstract <T,U> CompletableFuture<U> thenApply
670 +            (CompletableFuture<T> f, Function<? super T,U> a);
671 +        public abstract <T,U> CompletableFuture<U> thenCompose
672 +            (CompletableFuture<T> f,
673 +             Function<? super T,? extends CompletionStage<U>> a);
674 +        public abstract <T,U> CompletableFuture<U> handle
675 +            (CompletableFuture<T> f,
676 +             BiFunction<? super T,Throwable,? extends U> a);
677 +        public abstract <T> CompletableFuture<T> whenComplete
678 +            (CompletableFuture<T> f,
679 +             BiConsumer<? super T,? super Throwable> a);
680 +        public abstract <T,U> CompletableFuture<Void> runAfterBoth
681 +            (CompletableFuture<T> f, CompletableFuture<U> g, Runnable a);
682 +        public abstract <T,U> CompletableFuture<Void> thenAcceptBoth
683 +            (CompletableFuture<T> f,
684 +             CompletionStage<? extends U> g,
685 +             BiConsumer<? super T,? super U> a);
686 +        public abstract <T,U,V> CompletableFuture<V> thenCombine
687 +            (CompletableFuture<T> f,
688 +             CompletionStage<? extends U> g,
689 +             BiFunction<? super T,? super U,? extends V> a);
690 +        public abstract <T> CompletableFuture<Void> runAfterEither
691 +            (CompletableFuture<T> f,
692 +             CompletionStage<?> g,
693 +             java.lang.Runnable a);
694 +        public abstract <T> CompletableFuture<Void> acceptEither
695 +            (CompletableFuture<T> f,
696 +             CompletionStage<? extends T> g,
697 +             Consumer<? super T> a);
698 +        public abstract <T,U> CompletableFuture<U> applyToEither
699 +            (CompletableFuture<T> f,
700 +             CompletionStage<? extends T> g,
701 +             Function<? super T,U> a);
702 +    }
703 +
704 +    /**
705 +     * exceptionally action is not invoked when source completes
706 +     * normally, and source result is propagated
707 +     */
708 +    public void testExceptionally_normalCompletion() {
709 +        for (boolean createIncomplete : new boolean[] { true, false })
710 +        for (Integer v1 : new Integer[] { 1, null })
711 +    {
712 +        final AtomicInteger a = new AtomicInteger(0);
713 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
714 +        if (!createIncomplete) f.complete(v1);
715 +        final CompletableFuture<Integer> g = f.exceptionally
716 +            ((Throwable t) -> {
717 +                // Should not be called
718 +                a.getAndIncrement();
719 +                throw new AssertionError();
720 +            });
721 +        if (createIncomplete) f.complete(v1);
722 +
723 +        checkCompletedNormally(g, v1);
724 +        checkCompletedNormally(f, v1);
725 +        assertEquals(0, a.get());
726 +    }}
727 +
728 +
729 +    /**
730 +     * exceptionally action completes with function value on source
731 +     * exception
732 +     */
733 +    public void testExceptionally_exceptionalCompletion() {
734 +        for (boolean createIncomplete : new boolean[] { true, false })
735 +        for (Integer v1 : new Integer[] { 1, null })
736 +    {
737 +        final AtomicInteger a = new AtomicInteger(0);
738 +        final CFException ex = new CFException();
739 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
740 +        if (!createIncomplete) f.completeExceptionally(ex);
741 +        final CompletableFuture<Integer> g = f.exceptionally
742 +            ((Throwable t) -> {
743 +                threadAssertSame(t, ex);
744 +                a.getAndIncrement();
745 +                return v1;
746 +            });
747 +        if (createIncomplete) f.completeExceptionally(ex);
748 +
749 +        checkCompletedNormally(g, v1);
750 +        assertEquals(1, a.get());
751 +    }}
752 +
753 +    public void testExceptionally_exceptionalCompletionActionFailed() {
754 +        for (boolean createIncomplete : new boolean[] { true, false })
755 +        for (Integer v1 : new Integer[] { 1, null })
756 +    {
757 +        final AtomicInteger a = new AtomicInteger(0);
758 +        final CFException ex1 = new CFException();
759 +        final CFException ex2 = new CFException();
760 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
761 +        if (!createIncomplete) f.completeExceptionally(ex1);
762 +        final CompletableFuture<Integer> g = f.exceptionally
763 +            ((Throwable t) -> {
764 +                threadAssertSame(t, ex1);
765 +                a.getAndIncrement();
766 +                throw ex2;
767 +            });
768 +        if (createIncomplete) f.completeExceptionally(ex1);
769 +
770 +        checkCompletedWithWrappedCFException(g, ex2);
771 +        assertEquals(1, a.get());
772 +    }}
773 +
774 +    /**
775 +     * handle action completes normally with function value on normal
776 +     * completion of source
777 +     */
778 +    public void testHandle_normalCompletion() {
779 +        for (ExecutionMode m : ExecutionMode.values())
780 +        for (boolean createIncomplete : new boolean[] { true, false })
781 +        for (Integer v1 : new Integer[] { 1, null })
782 +    {
783 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
784 +        final AtomicInteger a = new AtomicInteger(0);
785 +        if (!createIncomplete) f.complete(v1);
786 +        final CompletableFuture<Integer> g = m.handle
787 +            (f,
788 +             (Integer x, Throwable t) -> {
789 +                threadAssertSame(x, v1);
790 +                threadAssertNull(t);
791 +                a.getAndIncrement();
792 +                return inc(v1);
793 +            });
794 +        if (createIncomplete) f.complete(v1);
795 +
796 +        checkCompletedNormally(g, inc(v1));
797 +        checkCompletedNormally(f, v1);
798 +        assertEquals(1, a.get());
799 +    }}
800 +
801 +    /**
802 +     * handle action completes normally with function value on
803 +     * exceptional completion of source
804 +     */
805 +    public void testHandle_exceptionalCompletion() {
806 +        for (ExecutionMode m : ExecutionMode.values())
807 +        for (boolean createIncomplete : new boolean[] { true, false })
808 +        for (Integer v1 : new Integer[] { 1, null })
809 +    {
810 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
811 +        final AtomicInteger a = new AtomicInteger(0);
812 +        final CFException ex = new CFException();
813 +        if (!createIncomplete) f.completeExceptionally(ex);
814 +        final CompletableFuture<Integer> g = m.handle
815 +            (f,
816 +             (Integer x, Throwable t) -> {
817 +                threadAssertNull(x);
818 +                threadAssertSame(t, ex);
819 +                a.getAndIncrement();
820 +                return v1;
821 +            });
822 +        if (createIncomplete) f.completeExceptionally(ex);
823 +
824 +        checkCompletedNormally(g, v1);
825 +        checkCompletedWithWrappedCFException(f, ex);
826 +        assertEquals(1, a.get());
827 +    }}
828 +
829 +    /**
830 +     * handle action completes normally with function value on
831 +     * cancelled source
832 +     */
833 +    public void testHandle_sourceCancelled() {
834 +        for (ExecutionMode m : ExecutionMode.values())
835 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
836 +        for (boolean createIncomplete : new boolean[] { true, false })
837 +        for (Integer v1 : new Integer[] { 1, null })
838 +    {
839 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
840 +        final AtomicInteger a = new AtomicInteger(0);
841 +        if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
842 +        final CompletableFuture<Integer> g = m.handle
843 +            (f,
844 +             (Integer x, Throwable t) -> {
845 +                threadAssertNull(x);
846 +                threadAssertTrue(t instanceof CancellationException);
847 +                a.getAndIncrement();
848 +                return v1;
849 +            });
850 +        if (createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
851 +
852 +        checkCompletedNormally(g, v1);
853 +        checkCancelled(f);
854 +        assertEquals(1, a.get());
855 +    }}
856 +
857 +    /**
858 +     * handle result completes exceptionally if action does
859 +     */
860 +    public void testHandle_sourceFailedActionFailed() {
861 +        for (ExecutionMode m : ExecutionMode.values())
862 +        for (boolean createIncomplete : new boolean[] { true, false })
863 +    {
864 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
865 +        final AtomicInteger a = new AtomicInteger(0);
866 +        final CFException ex1 = new CFException();
867 +        final CFException ex2 = new CFException();
868 +        if (!createIncomplete) f.completeExceptionally(ex1);
869 +        final CompletableFuture<Integer> g = m.handle
870 +            (f,
871 +             (Integer x, Throwable t) -> {
872 +                threadAssertNull(x);
873 +                threadAssertSame(ex1, t);
874 +                a.getAndIncrement();
875 +                throw ex2;
876 +            });
877 +        if (createIncomplete) f.completeExceptionally(ex1);
878 +
879 +        checkCompletedWithWrappedCFException(g, ex2);
880 +        checkCompletedWithWrappedCFException(f, ex1);
881 +        assertEquals(1, a.get());
882 +    }}
883 +
884 +    public void testHandle_sourceCompletedNormallyActionFailed() {
885 +        for (ExecutionMode m : ExecutionMode.values())
886 +        for (boolean createIncomplete : new boolean[] { true, false })
887 +        for (Integer v1 : new Integer[] { 1, null })
888 +    {
889 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
890 +        final AtomicInteger a = new AtomicInteger(0);
891 +        final CFException ex = new CFException();
892 +        if (!createIncomplete) f.complete(v1);
893 +        final CompletableFuture<Integer> g = m.handle
894 +            (f,
895 +             (Integer x, Throwable t) -> {
896 +                threadAssertSame(x, v1);
897 +                threadAssertNull(t);
898 +                a.getAndIncrement();
899 +                throw ex;
900 +            });
901 +        if (createIncomplete) f.complete(v1);
902 +
903 +        checkCompletedWithWrappedCFException(g, ex);
904 +        checkCompletedNormally(f, v1);
905 +        assertEquals(1, a.get());
906 +    }}
907 +
908 +    /**
909 +     * runAsync completes after running Runnable
910 +     */
911 +    public void testRunAsync() {
912 +        Noop r = new Noop();
913 +        CompletableFuture<Void> f = CompletableFuture.runAsync(r);
914 +        assertNull(f.join());
915 +        assertEquals(1, r.invocationCount);
916 +        checkCompletedNormally(f, null);
917 +    }
918 +
919 +    /**
920 +     * runAsync with executor completes after running Runnable
921 +     */
922 +    public void testRunAsync2() {
923 +        Noop r = new Noop();
924 +        ThreadExecutor exec = new ThreadExecutor();
925 +        CompletableFuture<Void> f = CompletableFuture.runAsync(r, exec);
926 +        assertNull(f.join());
927 +        assertEquals(1, r.invocationCount);
928 +        checkCompletedNormally(f, null);
929 +        assertEquals(1, exec.count.get());
930 +    }
931 +
932 +    /**
933 +     * failing runAsync completes exceptionally after running Runnable
934 +     */
935 +    public void testRunAsync3() {
936 +        FailingNoop r = new FailingNoop();
937 +        CompletableFuture<Void> f = CompletableFuture.runAsync(r);
938 +        checkCompletedWithWrappedCFException(f);
939 +        assertEquals(1, r.invocationCount);
940 +    }
941 +
942 +    /**
943 +     * supplyAsync completes with result of supplier
944 +     */
945 +    public void testSupplyAsync() {
946 +        CompletableFuture<Integer> f;
947 +        f = CompletableFuture.supplyAsync(supplyOne);
948 +        assertEquals(f.join(), one);
949 +        checkCompletedNormally(f, one);
950 +    }
951 +
952 +    /**
953 +     * supplyAsync with executor completes with result of supplier
954 +     */
955 +    public void testSupplyAsync2() {
956 +        CompletableFuture<Integer> f;
957 +        f = CompletableFuture.supplyAsync(supplyOne, new ThreadExecutor());
958 +        assertEquals(f.join(), one);
959 +        checkCompletedNormally(f, one);
960 +    }
961 +
962 +    /**
963 +     * Failing supplyAsync completes exceptionally
964 +     */
965 +    public void testSupplyAsync3() {
966 +        FailingSupplier r = new FailingSupplier();
967 +        CompletableFuture<Integer> f = CompletableFuture.supplyAsync(r);
968 +        checkCompletedWithWrappedCFException(f);
969 +        assertEquals(1, r.invocationCount);
970 +    }
971 +
972 +    // seq completion methods
973 +
974 +    /**
975 +     * thenRun result completes normally after normal completion of source
976 +     */
977 +    public void testThenRun_normalCompletion() {
978 +        for (ExecutionMode m : ExecutionMode.values())
979 +        for (boolean createIncomplete : new boolean[] { true, false })
980 +        for (Integer v1 : new Integer[] { 1, null })
981 +    {
982 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
983 +        final Noop r = new Noop();
984 +        if (!createIncomplete) f.complete(v1);
985 +        final CompletableFuture<Void> g = m.thenRun(f, r);
986 +        if (createIncomplete) f.complete(v1);
987 +
988 +        checkCompletedNormally(g, null);
989 +        checkCompletedNormally(f, v1);
990 +        assertEquals(1, r.invocationCount);
991 +    }}
992 +
993 +    /**
994 +     * thenRun result completes exceptionally after exceptional
995 +     * completion of source
996 +     */
997 +    public void testThenRun_exceptionalCompletion() {
998 +        for (ExecutionMode m : ExecutionMode.values())
999 +        for (boolean createIncomplete : new boolean[] { true, false })
1000 +    {
1001 +        final CFException ex = new CFException();
1002 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1003 +        final Noop r = new Noop();
1004 +        if (!createIncomplete) f.completeExceptionally(ex);
1005 +        final CompletableFuture<Void> g = m.thenRun(f, r);
1006 +        if (createIncomplete) f.completeExceptionally(ex);
1007 +
1008 +        checkCompletedWithWrappedCFException(g, ex);
1009 +        checkCompletedWithWrappedCFException(f, ex);
1010 +        assertEquals(0, r.invocationCount);
1011 +    }}
1012 +
1013 +    /**
1014 +     * thenRun result completes exceptionally if source cancelled
1015 +     */
1016 +    public void testThenRun_sourceCancelled() {
1017 +        for (ExecutionMode m : ExecutionMode.values())
1018 +        for (boolean createIncomplete : new boolean[] { true, false })
1019 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1020 +    {
1021 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1022 +        final Noop r = new Noop();
1023 +        if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
1024 +        final CompletableFuture<Void> g = f.thenRun(r);
1025 +        if (createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
1026 +
1027 +        checkCompletedWithWrappedCancellationException(g);
1028 +        checkCancelled(f);
1029 +        assertEquals(0, r.invocationCount);
1030 +    }}
1031 +
1032 +    /**
1033 +     * thenRun result completes exceptionally if action does
1034 +     */
1035 +    public void testThenRun_actionFailed() {
1036 +        for (ExecutionMode m : ExecutionMode.values())
1037 +        for (boolean createIncomplete : new boolean[] { true, false })
1038 +        for (Integer v1 : new Integer[] { 1, null })
1039 +    {
1040 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1041 +        final FailingNoop r = new FailingNoop();
1042 +        if (!createIncomplete) f.complete(v1);
1043 +        final CompletableFuture<Void> g = f.thenRun(r);
1044 +        if (createIncomplete) f.complete(v1);
1045 +
1046 +        checkCompletedWithWrappedCFException(g);
1047 +        checkCompletedNormally(f, v1);
1048 +    }}
1049 +
1050 +    /**
1051 +     * thenApply result completes normally after normal completion of source
1052 +     */
1053 +    public void testThenApply() {
1054 +        CompletableFuture<Integer> f = new CompletableFuture<>();
1055 +        CompletableFuture<Integer> g = f.thenApply(inc);
1056 +        f.complete(one);
1057 +        checkCompletedNormally(g, two);
1058 +    }
1059 +
1060 +    /**
1061 +     * thenApply result completes exceptionally after exceptional
1062 +     * completion of source
1063 +     */
1064 +    public void testThenApply2() {
1065 +        CompletableFuture<Integer> f = new CompletableFuture<>();
1066 +        CompletableFuture<Integer> g = f.thenApply(inc);
1067 +        f.completeExceptionally(new CFException());
1068 +        checkCompletedWithWrappedCFException(g);
1069 +    }
1070 +
1071 +    /**
1072 +     * thenApply result completes exceptionally if action does
1073 +     */
1074 +    public void testThenApply3() {
1075 +        CompletableFuture<Integer> f = new CompletableFuture<>();
1076 +        CompletableFuture<Integer> g = f.thenApply(new FailingFunction());
1077 +        f.complete(one);
1078 +        checkCompletedWithWrappedCFException(g);
1079 +    }
1080 +
1081 +    /**
1082 +     * thenApply result completes exceptionally if source cancelled
1083 +     */
1084 +    public void testThenApply4() {
1085 +        CompletableFuture<Integer> f = new CompletableFuture<>();
1086 +        CompletableFuture<Integer> g = f.thenApply(inc);
1087 +        assertTrue(f.cancel(true));
1088 +        checkCompletedWithWrappedCancellationException(g);
1089 +    }
1090 +
1091 +    /**
1092 +     * thenAccept result completes normally after normal completion of source
1093 +     */
1094 +    public void testThenAccept() {
1095 +        CompletableFuture<Integer> f = new CompletableFuture<>();
1096 +        IncAction r = new IncAction();
1097 +        CompletableFuture<Void> g = f.thenAccept(r);
1098 +        f.complete(one);
1099 +        checkCompletedNormally(g, null);
1100 +        assertEquals(r.value, (Integer) 2);
1101 +    }
1102 +
1103 +    /**
1104 +     * thenAccept result completes exceptionally after exceptional
1105 +     * completion of source
1106 +     */
1107 +    public void testThenAccept2() {
1108 +        CompletableFuture<Integer> f = new CompletableFuture<>();
1109 +        IncAction r = new IncAction();
1110 +        CompletableFuture<Void> g = f.thenAccept(r);
1111 +        f.completeExceptionally(new CFException());
1112 +        checkCompletedWithWrappedCFException(g);
1113 +    }
1114 +
1115 +    /**
1116 +     * thenAccept result completes exceptionally if action does
1117 +     */
1118 +    public void testThenAccept3() {
1119 +        CompletableFuture<Integer> f = new CompletableFuture<>();
1120 +        FailingConsumer r = new FailingConsumer();
1121 +        CompletableFuture<Void> g = f.thenAccept(r);
1122 +        f.complete(one);
1123 +        checkCompletedWithWrappedCFException(g);
1124 +        assertEquals(1, r.invocationCount);
1125 +    }
1126 +
1127 +    /**
1128 +     * thenAccept result completes exceptionally if source cancelled
1129 +     */
1130 +    public void testThenAccept4() {
1131 +        CompletableFuture<Integer> f = new CompletableFuture<>();
1132 +        IncAction r = new IncAction();
1133 +        CompletableFuture<Void> g = f.thenAccept(r);
1134 +        assertTrue(f.cancel(true));
1135 +        checkCompletedWithWrappedCancellationException(g);
1136 +    }
1137 +
1138 +    /**
1139 +     * thenCombine result completes normally after normal completion
1140 +     * of sources
1141 +     */
1142 +    public void testThenCombine_normalCompletion1() {
1143 +        for (boolean createIncomplete : new boolean[] { true, false })
1144 +        for (boolean fFirst : new boolean[] { true, false })
1145 +        for (ExecutionMode m : ExecutionMode.values())
1146 +        for (Integer v1 : new Integer[] { 1, null })
1147 +        for (Integer v2 : new Integer[] { 2, null })
1148 +    {
1149 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1150 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1151 +        final SubtractFunction r = new SubtractFunction();
1152 +        CompletableFuture<Integer> h = null;
1153 +        if (createIncomplete) h = m.thenCombine(f, g, r);
1154 +
1155 +        if (fFirst)
1156 +            f.complete(v1);
1157 +        else
1158 +            g.complete(v2);
1159 +        if (createIncomplete) checkIncomplete(h);
1160 +        assertEquals(0, r.invocationCount);
1161 +        if (!fFirst)
1162 +            f.complete(v1);
1163 +        else
1164 +            g.complete(v2);
1165 +        if (!createIncomplete) h = m.thenCombine(f, g, r);
1166 +
1167 +        checkCompletedNormally(h, subtract(v1, v2));
1168 +        checkCompletedNormally(f, v1);
1169 +        checkCompletedNormally(g, v2);
1170 +        assertEquals(1, r.invocationCount);
1171 +    }}
1172 +
1173 +    /**
1174 +     * thenCombine result completes exceptionally after exceptional
1175 +     * completion of either source
1176 +     */
1177 +    public void testThenCombine_exceptionalCompletion1() {
1178 +        for (ExecutionMode m : ExecutionMode.values())
1179 +        for (Integer v1 : new Integer[] { 1, null })
1180 +    {
1181 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1182 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1183 +        final SubtractFunction r = new SubtractFunction();
1184 +        final CompletableFuture<Integer> h = m.thenCombine(f, g, r);
1185 +        final CFException ex = new CFException();
1186 +
1187 +        f.completeExceptionally(ex);
1188 +        checkIncomplete(h);
1189 +        g.complete(v1);
1190 +
1191 +        checkCompletedWithWrappedCFException(h, ex);
1192 +        checkCompletedWithWrappedCFException(f, ex);
1193 +        assertEquals(0, r.invocationCount);
1194 +        checkCompletedNormally(g, v1);
1195 +    }}
1196 +
1197 +    public void testThenCombine_exceptionalCompletion2() {
1198 +        for (ExecutionMode m : ExecutionMode.values())
1199 +        for (Integer v1 : new Integer[] { 1, null })
1200 +    {
1201 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1202 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1203 +        final SubtractFunction r = new SubtractFunction();
1204 +        final CompletableFuture<Integer> h = m.thenCombine(f, g, r);
1205 +        final CFException ex = new CFException();
1206 +
1207 +        g.completeExceptionally(ex);
1208 +        checkIncomplete(h);
1209 +        f.complete(v1);
1210 +
1211 +        checkCompletedWithWrappedCFException(h, ex);
1212 +        checkCompletedWithWrappedCFException(g, ex);
1213 +        assertEquals(0, r.invocationCount);
1214 +        checkCompletedNormally(f, v1);
1215 +    }}
1216 +
1217 +    public void testThenCombine_exceptionalCompletion3() {
1218 +        for (ExecutionMode m : ExecutionMode.values())
1219 +        for (Integer v1 : new Integer[] { 1, null })
1220 +    {
1221 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1222 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1223 +        final SubtractFunction r = new SubtractFunction();
1224 +        final CFException ex = new CFException();
1225 +
1226 +        g.completeExceptionally(ex);
1227 +        f.complete(v1);
1228 +        final CompletableFuture<Integer> h = m.thenCombine(f, g, r);
1229 +
1230 +        checkCompletedWithWrappedCFException(h, ex);
1231 +        checkCompletedWithWrappedCFException(g, ex);
1232 +        assertEquals(0, r.invocationCount);
1233 +        checkCompletedNormally(f, v1);
1234 +    }}
1235 +
1236 +    public void testThenCombine_exceptionalCompletion4() {
1237 +        for (ExecutionMode m : ExecutionMode.values())
1238 +        for (Integer v1 : new Integer[] { 1, null })
1239 +    {
1240 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1241 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1242 +        final SubtractFunction r = new SubtractFunction();
1243 +        final CFException ex = new CFException();
1244 +
1245 +        f.completeExceptionally(ex);
1246 +        g.complete(v1);
1247 +        final CompletableFuture<Integer> h = m.thenCombine(f, g, r);
1248 +
1249 +        checkCompletedWithWrappedCFException(h, ex);
1250 +        checkCompletedWithWrappedCFException(f, ex);
1251 +        assertEquals(0, r.invocationCount);
1252 +        checkCompletedNormally(g, v1);
1253 +    }}
1254 +
1255 +    /**
1256 +     * thenCombine result completes exceptionally if action does
1257 +     */
1258 +    public void testThenCombine_actionFailed1() {
1259 +        for (ExecutionMode m : ExecutionMode.values())
1260 +        for (Integer v1 : new Integer[] { 1, null })
1261 +        for (Integer v2 : new Integer[] { 2, null })
1262 +    {
1263 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1264 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1265 +        final FailingBiFunction r = new FailingBiFunction();
1266 +        final CompletableFuture<Integer> h = m.thenCombine(f, g, r);
1267 +
1268 +        f.complete(v1);
1269 +        checkIncomplete(h);
1270 +        g.complete(v2);
1271 +
1272 +        checkCompletedWithWrappedCFException(h);
1273 +        checkCompletedNormally(f, v1);
1274 +        checkCompletedNormally(g, v2);
1275 +    }}
1276 +
1277 +    public void testThenCombine_actionFailed2() {
1278 +        for (ExecutionMode m : ExecutionMode.values())
1279 +        for (Integer v1 : new Integer[] { 1, null })
1280 +        for (Integer v2 : new Integer[] { 2, null })
1281 +    {
1282 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1283 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1284 +        final FailingBiFunction r = new FailingBiFunction();
1285 +        final CompletableFuture<Integer> h = m.thenCombine(f, g, r);
1286 +
1287 +        g.complete(v2);
1288 +        checkIncomplete(h);
1289 +        f.complete(v1);
1290 +
1291 +        checkCompletedWithWrappedCFException(h);
1292 +        checkCompletedNormally(f, v1);
1293 +        checkCompletedNormally(g, v2);
1294 +    }}
1295 +
1296 +    /**
1297 +     * thenCombine result completes exceptionally if either source cancelled
1298 +     */
1299 +    public void testThenCombine_sourceCancelled1() {
1300 +        for (ExecutionMode m : ExecutionMode.values())
1301 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1302 +        for (Integer v1 : new Integer[] { 1, null })
1303 +    {
1304 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1305 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1306 +        final SubtractFunction r = new SubtractFunction();
1307 +        final CompletableFuture<Integer> h = m.thenCombine(f, g, r);
1308 +
1309 +        assertTrue(f.cancel(mayInterruptIfRunning));
1310 +        checkIncomplete(h);
1311 +        g.complete(v1);
1312 +
1313 +        checkCompletedWithWrappedCancellationException(h);
1314 +        checkCancelled(f);
1315 +        assertEquals(0, r.invocationCount);
1316 +        checkCompletedNormally(g, v1);
1317 +    }}
1318 +
1319 +    public void testThenCombine_sourceCancelled2() {
1320 +        for (ExecutionMode m : ExecutionMode.values())
1321 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1322 +        for (Integer v1 : new Integer[] { 1, null })
1323 +    {
1324 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1325 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1326 +        final SubtractFunction r = new SubtractFunction();
1327 +        final CompletableFuture<Integer> h = m.thenCombine(f, g, r);
1328 +
1329 +        assertTrue(g.cancel(mayInterruptIfRunning));
1330 +        checkIncomplete(h);
1331 +        f.complete(v1);
1332 +
1333 +        checkCompletedWithWrappedCancellationException(h);
1334 +        checkCancelled(g);
1335 +        assertEquals(0, r.invocationCount);
1336 +        checkCompletedNormally(f, v1);
1337 +    }}
1338 +
1339 +    public void testThenCombine_sourceCancelled3() {
1340 +        for (ExecutionMode m : ExecutionMode.values())
1341 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1342 +        for (Integer v1 : new Integer[] { 1, null })
1343 +    {
1344 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1345 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1346 +        final SubtractFunction r = new SubtractFunction();
1347 +
1348 +        assertTrue(g.cancel(mayInterruptIfRunning));
1349 +        f.complete(v1);
1350 +        final CompletableFuture<Integer> h = m.thenCombine(f, g, r);
1351 +
1352 +        checkCompletedWithWrappedCancellationException(h);
1353 +        checkCancelled(g);
1354 +        assertEquals(0, r.invocationCount);
1355 +        checkCompletedNormally(f, v1);
1356 +    }}
1357 +
1358 +    public void testThenCombine_sourceCancelled4() {
1359 +        for (ExecutionMode m : ExecutionMode.values())
1360 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1361 +        for (Integer v1 : new Integer[] { 1, null })
1362 +    {
1363 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1364 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1365 +        final SubtractFunction r = new SubtractFunction();
1366 +
1367 +        assertTrue(f.cancel(mayInterruptIfRunning));
1368 +        g.complete(v1);
1369 +        final CompletableFuture<Integer> h = m.thenCombine(f, g, r);
1370 +
1371 +        checkCompletedWithWrappedCancellationException(h);
1372 +        checkCancelled(f);
1373 +        assertEquals(0, r.invocationCount);
1374 +        checkCompletedNormally(g, v1);
1375 +    }}
1376 +
1377 +    /**
1378 +     * thenAcceptBoth result completes normally after normal
1379 +     * completion of sources
1380 +     */
1381 +    public void testThenAcceptBoth_normalCompletion1() {
1382 +        for (ExecutionMode m : ExecutionMode.values())
1383 +        for (Integer v1 : new Integer[] { 1, null })
1384 +        for (Integer v2 : new Integer[] { 2, null })
1385 +    {
1386 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1387 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1388 +        final SubtractAction r = new SubtractAction();
1389 +        final CompletableFuture<Void> h = m.thenAcceptBoth(f, g, r);
1390 +
1391 +        f.complete(v1);
1392 +        checkIncomplete(h);
1393 +        assertEquals(0, r.invocationCount);
1394 +        g.complete(v2);
1395 +
1396 +        checkCompletedNormally(h, null);
1397 +        assertEquals(subtract(v1, v2), r.value);
1398 +        checkCompletedNormally(f, v1);
1399 +        checkCompletedNormally(g, v2);
1400 +    }}
1401 +
1402 +    public void testThenAcceptBoth_normalCompletion2() {
1403 +        for (ExecutionMode m : ExecutionMode.values())
1404 +        for (Integer v1 : new Integer[] { 1, null })
1405 +        for (Integer v2 : new Integer[] { 2, null })
1406 +    {
1407 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1408 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1409 +        final SubtractAction r = new SubtractAction();
1410 +        final CompletableFuture<Void> h = m.thenAcceptBoth(f, g, r);
1411 +
1412 +        g.complete(v2);
1413 +        checkIncomplete(h);
1414 +        assertEquals(0, r.invocationCount);
1415 +        f.complete(v1);
1416 +
1417 +        checkCompletedNormally(h, null);
1418 +        assertEquals(subtract(v1, v2), r.value);
1419 +        checkCompletedNormally(f, v1);
1420 +        checkCompletedNormally(g, v2);
1421 +    }}
1422 +
1423 +    public void testThenAcceptBoth_normalCompletion3() {
1424 +        for (ExecutionMode m : ExecutionMode.values())
1425 +        for (Integer v1 : new Integer[] { 1, null })
1426 +        for (Integer v2 : new Integer[] { 2, null })
1427 +    {
1428 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1429 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1430 +        final SubtractAction r = new SubtractAction();
1431 +
1432 +        g.complete(v2);
1433 +        f.complete(v1);
1434 +        final CompletableFuture<Void> h = m.thenAcceptBoth(f, g, r);
1435 +
1436 +        checkCompletedNormally(h, null);
1437 +        assertEquals(subtract(v1, v2), r.value);
1438 +        checkCompletedNormally(f, v1);
1439 +        checkCompletedNormally(g, v2);
1440 +    }}
1441 +
1442 +    public void testThenAcceptBoth_normalCompletion4() {
1443 +        for (ExecutionMode m : ExecutionMode.values())
1444 +        for (Integer v1 : new Integer[] { 1, null })
1445 +        for (Integer v2 : new Integer[] { 2, null })
1446 +    {
1447 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1448 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1449 +        final SubtractAction r = new SubtractAction();
1450 +
1451 +        f.complete(v1);
1452 +        g.complete(v2);
1453 +        final CompletableFuture<Void> h = m.thenAcceptBoth(f, g, r);
1454 +
1455 +        checkCompletedNormally(h, null);
1456 +        assertEquals(subtract(v1, v2), r.value);
1457 +        checkCompletedNormally(f, v1);
1458 +        checkCompletedNormally(g, v2);
1459 +    }}
1460 +
1461 +    /**
1462 +     * thenAcceptBoth result completes exceptionally after exceptional
1463 +     * completion of either source
1464 +     */
1465 +    public void testThenAcceptBoth_exceptionalCompletion1() {
1466 +        for (ExecutionMode m : ExecutionMode.values())
1467 +        for (Integer v1 : new Integer[] { 1, null })
1468 +    {
1469 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1470 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1471 +        final SubtractAction r = new SubtractAction();
1472 +        final CompletableFuture<Void> h = m.thenAcceptBoth(f, g, r);
1473 +        final CFException ex = new CFException();
1474 +
1475 +        f.completeExceptionally(ex);
1476 +        checkIncomplete(h);
1477 +        g.complete(v1);
1478 +
1479 +        checkCompletedWithWrappedCFException(h, ex);
1480 +        checkCompletedWithWrappedCFException(f, ex);
1481 +        assertEquals(0, r.invocationCount);
1482 +        checkCompletedNormally(g, v1);
1483 +    }}
1484 +
1485 +    public void testThenAcceptBoth_exceptionalCompletion2() {
1486 +        for (ExecutionMode m : ExecutionMode.values())
1487 +        for (Integer v1 : new Integer[] { 1, null })
1488 +    {
1489 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1490 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1491 +        final SubtractAction r = new SubtractAction();
1492 +        final CompletableFuture<Void> h = m.thenAcceptBoth(f, g, r);
1493 +        final CFException ex = new CFException();
1494 +
1495 +        g.completeExceptionally(ex);
1496 +        checkIncomplete(h);
1497 +        f.complete(v1);
1498 +
1499 +        checkCompletedWithWrappedCFException(h, ex);
1500 +        checkCompletedWithWrappedCFException(g, ex);
1501 +        assertEquals(0, r.invocationCount);
1502 +        checkCompletedNormally(f, v1);
1503 +    }}
1504 +
1505 +    public void testThenAcceptBoth_exceptionalCompletion3() {
1506 +        for (ExecutionMode m : ExecutionMode.values())
1507 +        for (Integer v1 : new Integer[] { 1, null })
1508 +    {
1509 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1510 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1511 +        final SubtractAction r = new SubtractAction();
1512 +        final CFException ex = new CFException();
1513 +
1514 +        g.completeExceptionally(ex);
1515 +        f.complete(v1);
1516 +        final CompletableFuture<Void> h = m.thenAcceptBoth(f, g, r);
1517 +
1518 +        checkCompletedWithWrappedCFException(h, ex);
1519 +        checkCompletedWithWrappedCFException(g, ex);
1520 +        assertEquals(0, r.invocationCount);
1521 +        checkCompletedNormally(f, v1);
1522 +    }}
1523 +
1524 +    public void testThenAcceptBoth_exceptionalCompletion4() {
1525 +        for (ExecutionMode m : ExecutionMode.values())
1526 +        for (Integer v1 : new Integer[] { 1, null })
1527 +    {
1528 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1529 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1530 +        final SubtractAction r = new SubtractAction();
1531 +        final CFException ex = new CFException();
1532 +
1533 +        f.completeExceptionally(ex);
1534 +        g.complete(v1);
1535 +        final CompletableFuture<Void> h = m.thenAcceptBoth(f, g, r);
1536 +
1537 +        checkCompletedWithWrappedCFException(h, ex);
1538 +        checkCompletedWithWrappedCFException(f, ex);
1539 +        assertEquals(0, r.invocationCount);
1540 +        checkCompletedNormally(g, v1);
1541 +    }}
1542 +
1543 +    /**
1544 +     * thenAcceptBoth result completes exceptionally if action does
1545 +     */
1546 +    public void testThenAcceptBoth_actionFailed1() {
1547 +        for (ExecutionMode m : ExecutionMode.values())
1548 +        for (Integer v1 : new Integer[] { 1, null })
1549 +        for (Integer v2 : new Integer[] { 2, null })
1550 +    {
1551 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1552 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1553 +        final FailingBiConsumer r = new FailingBiConsumer();
1554 +        final CompletableFuture<Void> h = m.thenAcceptBoth(f, g, r);
1555 +
1556 +        f.complete(v1);
1557 +        checkIncomplete(h);
1558 +        g.complete(v2);
1559 +
1560 +        checkCompletedWithWrappedCFException(h);
1561 +        checkCompletedNormally(f, v1);
1562 +        checkCompletedNormally(g, v2);
1563 +    }}
1564 +
1565 +    public void testThenAcceptBoth_actionFailed2() {
1566 +        for (ExecutionMode m : ExecutionMode.values())
1567 +        for (Integer v1 : new Integer[] { 1, null })
1568 +        for (Integer v2 : new Integer[] { 2, null })
1569 +    {
1570 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1571 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1572 +        final FailingBiConsumer r = new FailingBiConsumer();
1573 +        final CompletableFuture<Void> h = m.thenAcceptBoth(f, g, r);
1574 +
1575 +        g.complete(v2);
1576 +        checkIncomplete(h);
1577 +        f.complete(v1);
1578 +
1579 +        checkCompletedWithWrappedCFException(h);
1580 +        checkCompletedNormally(f, v1);
1581 +        checkCompletedNormally(g, v2);
1582 +    }}
1583 +
1584 +    /**
1585 +     * thenAcceptBoth result completes exceptionally if either source cancelled
1586 +     */
1587 +    public void testThenAcceptBoth_sourceCancelled1() {
1588 +        for (ExecutionMode m : ExecutionMode.values())
1589 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1590 +        for (Integer v1 : new Integer[] { 1, null })
1591 +    {
1592 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1593 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1594 +        final SubtractAction r = new SubtractAction();
1595 +        final CompletableFuture<Void> h = m.thenAcceptBoth(f, g, r);
1596 +
1597 +        assertTrue(f.cancel(mayInterruptIfRunning));
1598 +        checkIncomplete(h);
1599 +        g.complete(v1);
1600 +
1601 +        checkCompletedWithWrappedCancellationException(h);
1602 +        checkCancelled(f);
1603 +        assertEquals(0, r.invocationCount);
1604 +        checkCompletedNormally(g, v1);
1605 +    }}
1606 +
1607 +    public void testThenAcceptBoth_sourceCancelled2() {
1608 +        for (ExecutionMode m : ExecutionMode.values())
1609 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1610 +        for (Integer v1 : new Integer[] { 1, null })
1611 +    {
1612 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1613 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1614 +        final SubtractAction r = new SubtractAction();
1615 +        final CompletableFuture<Void> h = m.thenAcceptBoth(f, g, r);
1616 +
1617 +        assertTrue(g.cancel(mayInterruptIfRunning));
1618 +        checkIncomplete(h);
1619 +        f.complete(v1);
1620 +
1621 +        checkCompletedWithWrappedCancellationException(h);
1622 +        checkCancelled(g);
1623 +        assertEquals(0, r.invocationCount);
1624 +        checkCompletedNormally(f, v1);
1625 +    }}
1626 +
1627 +    public void testThenAcceptBoth_sourceCancelled3() {
1628 +        for (ExecutionMode m : ExecutionMode.values())
1629 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1630 +        for (Integer v1 : new Integer[] { 1, null })
1631 +    {
1632 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1633 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1634 +        final SubtractAction r = new SubtractAction();
1635 +
1636 +        assertTrue(g.cancel(mayInterruptIfRunning));
1637 +        f.complete(v1);
1638 +        final CompletableFuture<Void> h = m.thenAcceptBoth(f, g, r);
1639 +
1640 +        checkCompletedWithWrappedCancellationException(h);
1641 +        checkCancelled(g);
1642 +        assertEquals(0, r.invocationCount);
1643 +        checkCompletedNormally(f, v1);
1644 +    }}
1645 +
1646 +    public void testThenAcceptBoth_sourceCancelled4() {
1647 +        for (ExecutionMode m : ExecutionMode.values())
1648 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1649 +        for (Integer v1 : new Integer[] { 1, null })
1650 +    {
1651 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1652 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1653 +        final SubtractAction r = new SubtractAction();
1654 +
1655 +        assertTrue(f.cancel(mayInterruptIfRunning));
1656 +        g.complete(v1);
1657 +        final CompletableFuture<Void> h = m.thenAcceptBoth(f, g, r);
1658 +
1659 +        checkCompletedWithWrappedCancellationException(h);
1660 +        checkCancelled(f);
1661 +        assertEquals(0, r.invocationCount);
1662 +        checkCompletedNormally(g, v1);
1663 +    }}
1664 +
1665 +    /**
1666 +     * runAfterBoth result completes normally after normal
1667 +     * completion of sources
1668 +     */
1669 +    public void testRunAfterBoth_normalCompletion1() {
1670 +        for (ExecutionMode m : ExecutionMode.values())
1671 +        for (Integer v1 : new Integer[] { 1, null })
1672 +        for (Integer v2 : new Integer[] { 2, null })
1673 +    {
1674 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1675 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1676 +        final Noop r = new Noop();
1677 +        final CompletableFuture<Void> h = m.runAfterBoth(f, g, r);
1678 +
1679 +        f.complete(v1);
1680 +        checkIncomplete(h);
1681 +        assertEquals(0, r.invocationCount);
1682 +        g.complete(v2);
1683 +
1684 +        checkCompletedNormally(h, null);
1685 +        assertEquals(1, r.invocationCount);
1686 +        checkCompletedNormally(f, v1);
1687 +        checkCompletedNormally(g, v2);
1688 +    }}
1689 +
1690 +    public void testRunAfterBoth_normalCompletion2() {
1691 +        for (ExecutionMode m : ExecutionMode.values())
1692 +        for (Integer v1 : new Integer[] { 1, null })
1693 +        for (Integer v2 : new Integer[] { 2, null })
1694 +    {
1695 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1696 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1697 +        final Noop r = new Noop();
1698 +        final CompletableFuture<Void> h = m.runAfterBoth(f, g, r);
1699 +
1700 +        g.complete(v2);
1701 +        checkIncomplete(h);
1702 +        assertEquals(0, r.invocationCount);
1703 +        f.complete(v1);
1704 +
1705 +        checkCompletedNormally(h, null);
1706 +        assertEquals(1, r.invocationCount);
1707 +        checkCompletedNormally(f, v1);
1708 +        checkCompletedNormally(g, v2);
1709 +    }}
1710 +
1711 +    public void testRunAfterBoth_normalCompletion3() {
1712 +        for (ExecutionMode m : ExecutionMode.values())
1713 +        for (Integer v1 : new Integer[] { 1, null })
1714 +        for (Integer v2 : new Integer[] { 2, null })
1715 +    {
1716 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1717 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1718 +        final Noop r = new Noop();
1719 +
1720 +        g.complete(v2);
1721 +        f.complete(v1);
1722 +        final CompletableFuture<Void> h = m.runAfterBoth(f, g, r);
1723 +
1724 +        checkCompletedNormally(h, null);
1725 +        assertEquals(1, r.invocationCount);
1726 +        checkCompletedNormally(f, v1);
1727 +        checkCompletedNormally(g, v2);
1728 +    }}
1729 +
1730 +    public void testRunAfterBoth_normalCompletion4() {
1731 +        for (ExecutionMode m : ExecutionMode.values())
1732 +        for (Integer v1 : new Integer[] { 1, null })
1733 +        for (Integer v2 : new Integer[] { 2, null })
1734 +    {
1735 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1736 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1737 +        final Noop r = new Noop();
1738 +
1739 +        f.complete(v1);
1740 +        g.complete(v2);
1741 +        final CompletableFuture<Void> h = m.runAfterBoth(f, g, r);
1742 +
1743 +        checkCompletedNormally(h, null);
1744 +        assertEquals(1, r.invocationCount);
1745 +        checkCompletedNormally(f, v1);
1746 +        checkCompletedNormally(g, v2);
1747 +    }}
1748 +
1749 +    /**
1750 +     * runAfterBoth result completes exceptionally after exceptional
1751 +     * completion of either source
1752 +     */
1753 +    public void testRunAfterBoth_exceptionalCompletion1() {
1754 +        for (ExecutionMode m : ExecutionMode.values())
1755 +        for (Integer v1 : new Integer[] { 1, null })
1756 +    {
1757 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1758 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1759 +        final Noop r = new Noop();
1760 +        final CompletableFuture<Void> h = m.runAfterBoth(f, g, r);
1761 +        final CFException ex = new CFException();
1762 +
1763 +        f.completeExceptionally(ex);
1764 +        checkIncomplete(h);
1765 +        g.complete(v1);
1766 +
1767 +        checkCompletedWithWrappedCFException(h, ex);
1768 +        checkCompletedWithWrappedCFException(f, ex);
1769 +        assertEquals(0, r.invocationCount);
1770 +        checkCompletedNormally(g, v1);
1771 +    }}
1772 +
1773 +    public void testRunAfterBoth_exceptionalCompletion2() {
1774 +        for (ExecutionMode m : ExecutionMode.values())
1775 +        for (Integer v1 : new Integer[] { 1, null })
1776 +    {
1777 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1778 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1779 +        final Noop r = new Noop();
1780 +        final CompletableFuture<Void> h = m.runAfterBoth(f, g, r);
1781 +        final CFException ex = new CFException();
1782 +
1783 +        g.completeExceptionally(ex);
1784 +        checkIncomplete(h);
1785 +        f.complete(v1);
1786 +
1787 +        checkCompletedWithWrappedCFException(h, ex);
1788 +        checkCompletedWithWrappedCFException(g, ex);
1789 +        assertEquals(0, r.invocationCount);
1790 +        checkCompletedNormally(f, v1);
1791 +    }}
1792 +
1793 +    public void testRunAfterBoth_exceptionalCompletion3() {
1794 +        for (ExecutionMode m : ExecutionMode.values())
1795 +        for (Integer v1 : new Integer[] { 1, null })
1796 +    {
1797 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1798 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1799 +        final Noop r = new Noop();
1800 +        final CFException ex = new CFException();
1801 +
1802 +        g.completeExceptionally(ex);
1803 +        f.complete(v1);
1804 +        final CompletableFuture<Void> h = m.runAfterBoth(f, g, r);
1805 +
1806 +        checkCompletedWithWrappedCFException(h, ex);
1807 +        checkCompletedWithWrappedCFException(g, ex);
1808 +        assertEquals(0, r.invocationCount);
1809 +        checkCompletedNormally(f, v1);
1810 +    }}
1811 +
1812 +    public void testRunAfterBoth_exceptionalCompletion4() {
1813 +        for (ExecutionMode m : ExecutionMode.values())
1814 +        for (Integer v1 : new Integer[] { 1, null })
1815 +    {
1816 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1817 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1818 +        final Noop r = new Noop();
1819 +        final CFException ex = new CFException();
1820 +
1821 +        f.completeExceptionally(ex);
1822 +        g.complete(v1);
1823 +        final CompletableFuture<Void> h = m.runAfterBoth(f, g, r);
1824 +
1825 +        checkCompletedWithWrappedCFException(h, ex);
1826 +        checkCompletedWithWrappedCFException(f, ex);
1827 +        assertEquals(0, r.invocationCount);
1828 +        checkCompletedNormally(g, v1);
1829 +    }}
1830 +
1831 +    /**
1832 +     * runAfterBoth result completes exceptionally if action does
1833 +     */
1834 +    public void testRunAfterBoth_actionFailed1() {
1835 +        for (ExecutionMode m : ExecutionMode.values())
1836 +        for (Integer v1 : new Integer[] { 1, null })
1837 +        for (Integer v2 : new Integer[] { 2, null })
1838 +    {
1839 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1840 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1841 +        final FailingNoop r = new FailingNoop();
1842 +        final CompletableFuture<Void> h = m.runAfterBoth(f, g, r);
1843 +
1844 +        f.complete(v1);
1845 +        checkIncomplete(h);
1846 +        g.complete(v2);
1847 +
1848 +        checkCompletedWithWrappedCFException(h);
1849 +        checkCompletedNormally(f, v1);
1850 +        checkCompletedNormally(g, v2);
1851 +    }}
1852 +
1853 +    public void testRunAfterBoth_actionFailed2() {
1854 +        for (ExecutionMode m : ExecutionMode.values())
1855 +        for (Integer v1 : new Integer[] { 1, null })
1856 +        for (Integer v2 : new Integer[] { 2, null })
1857 +    {
1858 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1859 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1860 +        final FailingNoop r = new FailingNoop();
1861 +        final CompletableFuture<Void> h = m.runAfterBoth(f, g, r);
1862 +
1863 +        g.complete(v2);
1864 +        checkIncomplete(h);
1865 +        f.complete(v1);
1866 +
1867 +        checkCompletedWithWrappedCFException(h);
1868 +        checkCompletedNormally(f, v1);
1869 +        checkCompletedNormally(g, v2);
1870 +    }}
1871 +
1872 +    /**
1873 +     * runAfterBoth result completes exceptionally if either source cancelled
1874 +     */
1875 +    public void testRunAfterBoth_sourceCancelled1() {
1876 +        for (ExecutionMode m : ExecutionMode.values())
1877 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1878 +        for (Integer v1 : new Integer[] { 1, null })
1879 +    {
1880 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1881 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1882 +        final Noop r = new Noop();
1883 +        final CompletableFuture<Void> h = m.runAfterBoth(f, g, r);
1884 +
1885 +        assertTrue(f.cancel(mayInterruptIfRunning));
1886 +        checkIncomplete(h);
1887 +        g.complete(v1);
1888 +
1889 +        checkCompletedWithWrappedCancellationException(h);
1890 +        checkCancelled(f);
1891 +        assertEquals(0, r.invocationCount);
1892 +        checkCompletedNormally(g, v1);
1893 +    }}
1894 +
1895 +    public void testRunAfterBoth_sourceCancelled2() {
1896 +        for (ExecutionMode m : ExecutionMode.values())
1897 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1898 +        for (Integer v1 : new Integer[] { 1, null })
1899 +    {
1900 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1901 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1902 +        final Noop r = new Noop();
1903 +        final CompletableFuture<Void> h = m.runAfterBoth(f, g, r);
1904 +
1905 +        assertTrue(g.cancel(mayInterruptIfRunning));
1906 +        checkIncomplete(h);
1907 +        f.complete(v1);
1908 +
1909 +        checkCompletedWithWrappedCancellationException(h);
1910 +        checkCancelled(g);
1911 +        assertEquals(0, r.invocationCount);
1912 +        checkCompletedNormally(f, v1);
1913 +    }}
1914 +
1915 +    public void testRunAfterBoth_sourceCancelled3() {
1916 +        for (ExecutionMode m : ExecutionMode.values())
1917 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1918 +        for (Integer v1 : new Integer[] { 1, null })
1919 +    {
1920 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1921 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1922 +        final Noop r = new Noop();
1923 +
1924 +        assertTrue(g.cancel(mayInterruptIfRunning));
1925 +        f.complete(v1);
1926 +        final CompletableFuture<Void> h = m.runAfterBoth(f, g, r);
1927 +
1928 +        checkCompletedWithWrappedCancellationException(h);
1929 +        checkCancelled(g);
1930 +        assertEquals(0, r.invocationCount);
1931 +        checkCompletedNormally(f, v1);
1932 +    }}
1933 +
1934 +    public void testRunAfterBoth_sourceCancelled4() {
1935 +        for (ExecutionMode m : ExecutionMode.values())
1936 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1937 +        for (Integer v1 : new Integer[] { 1, null })
1938 +    {
1939 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1940 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1941 +        final Noop r = new Noop();
1942 +
1943 +        assertTrue(f.cancel(mayInterruptIfRunning));
1944 +        g.complete(v1);
1945 +        final CompletableFuture<Void> h = m.runAfterBoth(f, g, r);
1946 +
1947 +        checkCompletedWithWrappedCancellationException(h);
1948 +        checkCancelled(f);
1949 +        assertEquals(0, r.invocationCount);
1950 +        checkCompletedNormally(g, v1);
1951 +    }}
1952 +
1953 +    /**
1954 +     * applyToEither result completes normally after normal completion
1955 +     * of either source
1956 +     */
1957 +    public void testApplyToEither_normalCompletion1() {
1958 +        for (ExecutionMode m : ExecutionMode.values())
1959 +        for (Integer v1 : new Integer[] { 1, null })
1960 +        for (Integer v2 : new Integer[] { 2, null })
1961 +    {
1962 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1963 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1964 +        final IncFunction r = new IncFunction();
1965 +        final CompletableFuture<Integer> h = m.applyToEither(f, g, r);
1966 +
1967 +        f.complete(v1);
1968 +        checkCompletedNormally(h, inc(v1));
1969 +        g.complete(v2);
1970 +
1971 +        checkCompletedNormally(f, v1);
1972 +        checkCompletedNormally(g, v2);
1973 +        checkCompletedNormally(h, inc(v1));
1974 +    }}
1975 +
1976 +    public void testApplyToEither_normalCompletion2() {
1977 +        for (ExecutionMode m : ExecutionMode.values())
1978 +        for (Integer v1 : new Integer[] { 1, null })
1979 +        for (Integer v2 : new Integer[] { 2, null })
1980 +    {
1981 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1982 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1983 +        final IncFunction r = new IncFunction();
1984 +        final CompletableFuture<Integer> h = m.applyToEither(f, g, r);
1985 +
1986 +        g.complete(v2);
1987 +        checkCompletedNormally(h, inc(v2));
1988 +        f.complete(v1);
1989 +
1990 +        checkCompletedNormally(f, v1);
1991 +        checkCompletedNormally(g, v2);
1992 +        checkCompletedNormally(h, inc(v2));
1993 +        }}
1994 +
1995 +    public void testApplyToEither_normalCompletion3() {
1996 +        for (ExecutionMode m : ExecutionMode.values())
1997 +        for (Integer v1 : new Integer[] { 1, null })
1998 +        for (Integer v2 : new Integer[] { 2, null })
1999 +    {
2000 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2001 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2002 +        final IncFunction r = new IncFunction();
2003 +
2004 +        f.complete(v1);
2005 +        g.complete(v2);
2006 +        final CompletableFuture<Integer> h = m.applyToEither(f, g, r);
2007 +
2008 +        checkCompletedNormally(f, v1);
2009 +        checkCompletedNormally(g, v2);
2010 +
2011 +        // unspecified behavior
2012 +        assertTrue(Objects.equals(h.join(), inc(v1)) ||
2013 +                   Objects.equals(h.join(), inc(v2)));
2014 +        assertEquals(1, r.invocationCount);
2015 +    }}
2016 +
2017 +    /**
2018 +     * applyToEither result completes exceptionally after exceptional
2019 +     * completion of either source
2020 +     */
2021 +    public void testApplyToEither_exceptionalCompletion1() {
2022 +        for (ExecutionMode m : ExecutionMode.values())
2023 +        for (Integer v1 : new Integer[] { 1, null })
2024 +    {
2025 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2026 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2027 +        final IncFunction r = new IncFunction();
2028 +        final CompletableFuture<Integer> h = m.applyToEither(f, g, r);
2029 +        final CFException ex = new CFException();
2030 +
2031 +        f.completeExceptionally(ex);
2032 +        checkCompletedWithWrappedCFException(h, ex);
2033 +        g.complete(v1);
2034 +
2035 +        assertEquals(0, r.invocationCount);
2036 +        checkCompletedNormally(g, v1);
2037 +        checkCompletedWithWrappedCFException(f, ex);
2038 +        checkCompletedWithWrappedCFException(h, ex);
2039 +    }}
2040 +
2041 +    public void testApplyToEither_exceptionalCompletion2() {
2042 +        for (ExecutionMode m : ExecutionMode.values())
2043 +        for (Integer v1 : new Integer[] { 1, null })
2044 +    {
2045 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2046 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2047 +        final IncFunction r = new IncFunction();
2048 +        final CompletableFuture<Integer> h = m.applyToEither(f, g, r);
2049 +        final CFException ex = new CFException();
2050 +
2051 +        g.completeExceptionally(ex);
2052 +        checkCompletedWithWrappedCFException(h, ex);
2053 +        f.complete(v1);
2054 +
2055 +        assertEquals(0, r.invocationCount);
2056 +        checkCompletedNormally(f, v1);
2057 +        checkCompletedWithWrappedCFException(g, ex);
2058 +        checkCompletedWithWrappedCFException(h, ex);
2059 +    }}
2060 +
2061 +    public void testApplyToEither_exceptionalCompletion3() {
2062 +        for (ExecutionMode m : ExecutionMode.values())
2063 +        for (Integer v1 : new Integer[] { 1, null })
2064 +    {
2065 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2066 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2067 +        final IncFunction r = new IncFunction();
2068 +        final CFException ex = new CFException();
2069 +
2070 +        g.completeExceptionally(ex);
2071 +        f.complete(v1);
2072 +        final CompletableFuture<Integer> h = m.applyToEither(f, g, r);
2073 +
2074 +        // unspecified behavior
2075 +        Integer v;
2076 +        try {
2077 +            assertEquals(inc(v1), h.join());
2078 +            assertEquals(1, r.invocationCount);
2079 +        } catch (CompletionException ok) {
2080 +            checkCompletedWithWrappedCFException(h, ex);
2081 +            assertEquals(0, r.invocationCount);
2082 +        }
2083 +
2084 +        checkCompletedWithWrappedCFException(g, ex);
2085 +        checkCompletedNormally(f, v1);
2086 +    }}
2087 +
2088 +    public void testApplyToEither_exceptionalCompletion4() {
2089 +        for (ExecutionMode m : ExecutionMode.values())
2090 +        for (Integer v1 : new Integer[] { 1, null })
2091 +    {
2092 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2093 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2094 +        final IncFunction r = new IncFunction();
2095 +        final CFException ex = new CFException();
2096 +
2097 +        f.completeExceptionally(ex);
2098 +        g.complete(v1);
2099 +        final CompletableFuture<Integer> h = m.applyToEither(f, g, r);
2100 +
2101 +        // unspecified behavior
2102 +        Integer v;
2103 +        try {
2104 +            assertEquals(inc(v1), h.join());
2105 +            assertEquals(1, r.invocationCount);
2106 +        } catch (CompletionException ok) {
2107 +            checkCompletedWithWrappedCFException(h, ex);
2108 +            assertEquals(0, r.invocationCount);
2109 +        }
2110 +
2111 +        checkCompletedWithWrappedCFException(f, ex);
2112 +        checkCompletedNormally(g, v1);
2113 +    }}
2114 +
2115 +    /**
2116 +     * applyToEither result completes exceptionally if action does
2117 +     */
2118 +    public void testApplyToEither_actionFailed1() {
2119 +        for (ExecutionMode m : ExecutionMode.values())
2120 +        for (Integer v1 : new Integer[] { 1, null })
2121 +        for (Integer v2 : new Integer[] { 2, null })
2122 +    {
2123 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2124 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2125 +        final FailingFunction r = new FailingFunction();
2126 +        final CompletableFuture<Integer> h = m.applyToEither(f, g, r);
2127 +
2128 +        f.complete(v1);
2129 +        checkCompletedWithWrappedCFException(h);
2130 +        g.complete(v2);
2131 +        checkCompletedNormally(f, v1);
2132 +        checkCompletedNormally(g, v2);
2133 +    }}
2134 +
2135 +    public void testApplyToEither_actionFailed2() {
2136 +        for (ExecutionMode m : ExecutionMode.values())
2137 +        for (Integer v1 : new Integer[] { 1, null })
2138 +        for (Integer v2 : new Integer[] { 2, null })
2139 +    {
2140 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2141 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2142 +        final FailingFunction r = new FailingFunction();
2143 +        final CompletableFuture<Integer> h = m.applyToEither(f, g, r);
2144 +
2145 +        g.complete(v2);
2146 +        checkCompletedWithWrappedCFException(h);
2147 +        f.complete(v1);
2148 +        checkCompletedNormally(f, v1);
2149 +        checkCompletedNormally(g, v2);
2150 +    }}
2151 +
2152 +    /**
2153 +     * applyToEither result completes exceptionally if either source cancelled
2154 +     */
2155 +    public void testApplyToEither_sourceCancelled1() {
2156 +        for (ExecutionMode m : ExecutionMode.values())
2157 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2158 +        for (Integer v1 : new Integer[] { 1, null })
2159 +    {
2160 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2161 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2162 +        final IncFunction r = new IncFunction();
2163 +        final CompletableFuture<Integer> h = m.applyToEither(f, g, r);
2164 +
2165 +        assertTrue(f.cancel(mayInterruptIfRunning));
2166 +        checkCompletedWithWrappedCancellationException(h);
2167 +        g.complete(v1);
2168 +
2169 +        checkCancelled(f);
2170 +        assertEquals(0, r.invocationCount);
2171 +        checkCompletedNormally(g, v1);
2172 +        checkCompletedWithWrappedCancellationException(h);
2173 +    }}
2174 +
2175 +    public void testApplyToEither_sourceCancelled2() {
2176 +        for (ExecutionMode m : ExecutionMode.values())
2177 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2178 +        for (Integer v1 : new Integer[] { 1, null })
2179 +    {
2180 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2181 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2182 +        final IncFunction r = new IncFunction();
2183 +        final CompletableFuture<Integer> h = m.applyToEither(f, g, r);
2184 +
2185 +        assertTrue(g.cancel(mayInterruptIfRunning));
2186 +        checkCompletedWithWrappedCancellationException(h);
2187 +        f.complete(v1);
2188 +
2189 +        checkCancelled(g);
2190 +        assertEquals(0, r.invocationCount);
2191 +        checkCompletedNormally(f, v1);
2192 +        checkCompletedWithWrappedCancellationException(h);
2193 +    }}
2194 +
2195 +    public void testApplyToEither_sourceCancelled3() {
2196 +        for (ExecutionMode m : ExecutionMode.values())
2197 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2198 +        for (Integer v1 : new Integer[] { 1, null })
2199 +    {
2200 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2201 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2202 +        final IncFunction r = new IncFunction();
2203 +
2204 +        assertTrue(g.cancel(mayInterruptIfRunning));
2205 +        f.complete(v1);
2206 +        final CompletableFuture<Integer> h = m.applyToEither(f, g, r);
2207 +
2208 +        // unspecified behavior
2209 +        Integer v;
2210 +        try {
2211 +            assertEquals(inc(v1), h.join());
2212 +            assertEquals(1, r.invocationCount);
2213 +        } catch (CompletionException ok) {
2214 +            checkCompletedWithWrappedCancellationException(h);
2215 +            assertEquals(0, r.invocationCount);
2216 +        }
2217 +
2218 +        checkCancelled(g);
2219 +        checkCompletedNormally(f, v1);
2220 +    }}
2221 +
2222 +    public void testApplyToEither_sourceCancelled4() {
2223 +        for (ExecutionMode m : ExecutionMode.values())
2224 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2225 +        for (Integer v1 : new Integer[] { 1, null })
2226 +    {
2227 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2228 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2229 +        final IncFunction r = new IncFunction();
2230 +
2231 +        assertTrue(f.cancel(mayInterruptIfRunning));
2232 +        g.complete(v1);
2233 +        final CompletableFuture<Integer> h = m.applyToEither(f, g, r);
2234 +
2235 +        // unspecified behavior
2236 +        Integer v;
2237 +        try {
2238 +            assertEquals(inc(v1), h.join());
2239 +            assertEquals(1, r.invocationCount);
2240 +        } catch (CompletionException ok) {
2241 +            checkCompletedWithWrappedCancellationException(h);
2242 +            assertEquals(0, r.invocationCount);
2243 +        }
2244 +
2245 +        checkCancelled(f);
2246 +        checkCompletedNormally(g, v1);
2247 +    }}
2248 +
2249 +    /**
2250 +     * acceptEither result completes normally after normal completion
2251 +     * of either source
2252 +     */
2253 +    public void testAcceptEither_normalCompletion1() {
2254 +        for (ExecutionMode m : ExecutionMode.values())
2255 +        for (Integer v1 : new Integer[] { 1, null })
2256 +        for (Integer v2 : new Integer[] { 2, null })
2257 +    {
2258 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2259 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2260 +        final IncAction r = new IncAction();
2261 +        final CompletableFuture<Void> h = m.acceptEither(f, g, r);
2262 +
2263 +        f.complete(v1);
2264 +        checkCompletedNormally(h, null);
2265 +        assertEquals(inc(v1), r.value);
2266 +        g.complete(v2);
2267 +
2268 +        checkCompletedNormally(f, v1);
2269 +        checkCompletedNormally(g, v2);
2270 +        checkCompletedNormally(h, null);
2271 +    }}
2272 +
2273 +    public void testAcceptEither_normalCompletion2() {
2274 +        for (ExecutionMode m : ExecutionMode.values())
2275 +        for (Integer v1 : new Integer[] { 1, null })
2276 +        for (Integer v2 : new Integer[] { 2, null })
2277 +    {
2278 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2279 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2280 +        final IncAction r = new IncAction();
2281 +        final CompletableFuture<Void> h = m.acceptEither(f, g, r);
2282 +
2283 +        g.complete(v2);
2284 +        checkCompletedNormally(h, null);
2285 +        assertEquals(inc(v2), r.value);
2286 +        f.complete(v1);
2287 +
2288 +        checkCompletedNormally(f, v1);
2289 +        checkCompletedNormally(g, v2);
2290 +        checkCompletedNormally(h, null);
2291 +    }}
2292 +
2293 +    public void testAcceptEither_normalCompletion3() {
2294 +        for (ExecutionMode m : ExecutionMode.values())
2295 +        for (Integer v1 : new Integer[] { 1, null })
2296 +        for (Integer v2 : new Integer[] { 2, null })
2297 +    {
2298 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2299 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2300 +        final IncAction r = new IncAction();
2301 +
2302 +        f.complete(v1);
2303 +        g.complete(v2);
2304 +        final CompletableFuture<Void> h = m.acceptEither(f, g, r);
2305 +
2306 +        checkCompletedNormally(h, null);
2307 +        checkCompletedNormally(f, v1);
2308 +        checkCompletedNormally(g, v2);
2309 +
2310 +        // unspecified behavior
2311 +        assertTrue(Objects.equals(r.value, inc(v1)) ||
2312 +                   Objects.equals(r.value, inc(v2)));
2313 +    }}
2314 +
2315 +    /**
2316 +     * acceptEither result completes exceptionally after exceptional
2317 +     * completion of either source
2318 +     */
2319 +    public void testAcceptEither_exceptionalCompletion1() {
2320 +        for (ExecutionMode m : ExecutionMode.values())
2321 +        for (Integer v1 : new Integer[] { 1, null })
2322 +    {
2323 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2324 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2325 +        final IncAction r = new IncAction();
2326 +        final CompletableFuture<Void> h = m.acceptEither(f, g, r);
2327 +        final CFException ex = new CFException();
2328 +
2329 +        f.completeExceptionally(ex);
2330 +        checkCompletedWithWrappedCFException(h, ex);
2331 +        g.complete(v1);
2332 +
2333 +        assertEquals(0, r.invocationCount);
2334 +        checkCompletedNormally(g, v1);
2335 +        checkCompletedWithWrappedCFException(f, ex);
2336 +        checkCompletedWithWrappedCFException(h, ex);
2337 +    }}
2338 +
2339 +    public void testAcceptEither_exceptionalCompletion2() {
2340 +        for (ExecutionMode m : ExecutionMode.values())
2341 +        for (Integer v1 : new Integer[] { 1, null })
2342 +    {
2343 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2344 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2345 +        final IncAction r = new IncAction();
2346 +        final CompletableFuture<Void> h = m.acceptEither(f, g, r);
2347 +        final CFException ex = new CFException();
2348 +
2349 +        g.completeExceptionally(ex);
2350 +        checkCompletedWithWrappedCFException(h, ex);
2351 +        f.complete(v1);
2352 +
2353 +        assertEquals(0, r.invocationCount);
2354 +        checkCompletedNormally(f, v1);
2355 +        checkCompletedWithWrappedCFException(g, ex);
2356 +        checkCompletedWithWrappedCFException(h, ex);
2357 +    }}
2358 +
2359 +    public void testAcceptEither_exceptionalCompletion3() {
2360 +        for (ExecutionMode m : ExecutionMode.values())
2361 +        for (Integer v1 : new Integer[] { 1, null })
2362 +    {
2363 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2364 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2365 +        final IncAction r = new IncAction();
2366 +        final CFException ex = new CFException();
2367 +
2368 +        g.completeExceptionally(ex);
2369 +        f.complete(v1);
2370 +        final CompletableFuture<Void> h = m.acceptEither(f, g, r);
2371 +
2372 +        // unspecified behavior
2373 +        Integer v;
2374 +        try {
2375 +            assertNull(h.join());
2376 +            assertEquals(1, r.invocationCount);
2377 +            assertEquals(inc(v1), r.value);
2378 +        } catch (CompletionException ok) {
2379 +            checkCompletedWithWrappedCFException(h, ex);
2380 +            assertEquals(0, r.invocationCount);
2381 +        }
2382 +
2383 +        checkCompletedWithWrappedCFException(g, ex);
2384 +        checkCompletedNormally(f, v1);
2385 +    }}
2386 +
2387 +    public void testAcceptEither_exceptionalCompletion4() {
2388 +        for (ExecutionMode m : ExecutionMode.values())
2389 +        for (Integer v1 : new Integer[] { 1, null })
2390 +    {
2391 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2392 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2393 +        final IncAction r = new IncAction();
2394 +        final CFException ex = new CFException();
2395 +
2396 +        f.completeExceptionally(ex);
2397 +        g.complete(v1);
2398 +        final CompletableFuture<Void> h = m.acceptEither(f, g, r);
2399 +
2400 +        // unspecified behavior
2401 +        Integer v;
2402 +        try {
2403 +            assertNull(h.join());
2404 +            assertEquals(1, r.invocationCount);
2405 +            assertEquals(inc(v1), r.value);
2406 +        } catch (CompletionException ok) {
2407 +            checkCompletedWithWrappedCFException(h, ex);
2408 +            assertEquals(0, r.invocationCount);
2409 +        }
2410 +
2411 +        checkCompletedWithWrappedCFException(f, ex);
2412 +        checkCompletedNormally(g, v1);
2413 +    }}
2414 +
2415 +    /**
2416 +     * acceptEither result completes exceptionally if action does
2417 +     */
2418 +    public void testAcceptEither_actionFailed1() {
2419 +        for (ExecutionMode m : ExecutionMode.values())
2420 +        for (Integer v1 : new Integer[] { 1, null })
2421 +        for (Integer v2 : new Integer[] { 2, null })
2422 +    {
2423 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2424 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2425 +        final FailingConsumer r = new FailingConsumer();
2426 +        final CompletableFuture<Void> h = m.acceptEither(f, g, r);
2427 +
2428 +        f.complete(v1);
2429 +        checkCompletedWithWrappedCFException(h);
2430 +        g.complete(v2);
2431 +        checkCompletedNormally(f, v1);
2432 +        checkCompletedNormally(g, v2);
2433 +    }}
2434 +
2435 +    public void testAcceptEither_actionFailed2() {
2436 +        for (ExecutionMode m : ExecutionMode.values())
2437 +        for (Integer v1 : new Integer[] { 1, null })
2438 +        for (Integer v2 : new Integer[] { 2, null })
2439 +    {
2440 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2441 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2442 +        final FailingConsumer r = new FailingConsumer();
2443 +        final CompletableFuture<Void> h = m.acceptEither(f, g, r);
2444 +
2445 +        g.complete(v2);
2446 +        checkCompletedWithWrappedCFException(h);
2447 +        f.complete(v1);
2448 +        checkCompletedNormally(f, v1);
2449 +        checkCompletedNormally(g, v2);
2450 +    }}
2451 +
2452 +    /**
2453 +     * acceptEither result completes exceptionally if either source cancelled
2454 +     */
2455 +    public void testAcceptEither_sourceCancelled1() {
2456 +        for (ExecutionMode m : ExecutionMode.values())
2457 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2458 +        for (Integer v1 : new Integer[] { 1, null })
2459 +    {
2460 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2461 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2462 +        final IncAction r = new IncAction();
2463 +        final CompletableFuture<Void> h = m.acceptEither(f, g, r);
2464 +
2465 +        assertTrue(f.cancel(mayInterruptIfRunning));
2466 +        checkCompletedWithWrappedCancellationException(h);
2467 +        g.complete(v1);
2468 +
2469 +        checkCancelled(f);
2470 +        assertEquals(0, r.invocationCount);
2471 +        checkCompletedNormally(g, v1);
2472 +        checkCompletedWithWrappedCancellationException(h);
2473 +    }}
2474 +
2475 +    public void testAcceptEither_sourceCancelled2() {
2476 +        for (ExecutionMode m : ExecutionMode.values())
2477 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2478 +        for (Integer v1 : new Integer[] { 1, null })
2479 +    {
2480 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2481 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2482 +        final IncAction r = new IncAction();
2483 +        final CompletableFuture<Void> h = m.acceptEither(f, g, r);
2484 +
2485 +        assertTrue(g.cancel(mayInterruptIfRunning));
2486 +        checkCompletedWithWrappedCancellationException(h);
2487 +        f.complete(v1);
2488 +
2489 +        checkCancelled(g);
2490 +        assertEquals(0, r.invocationCount);
2491 +        checkCompletedNormally(f, v1);
2492 +        checkCompletedWithWrappedCancellationException(h);
2493 +    }}
2494 +
2495 +    public void testAcceptEither_sourceCancelled3() {
2496 +        for (ExecutionMode m : ExecutionMode.values())
2497 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2498 +        for (Integer v1 : new Integer[] { 1, null })
2499 +    {
2500 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2501 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2502 +        final IncAction r = new IncAction();
2503 +
2504 +        assertTrue(g.cancel(mayInterruptIfRunning));
2505 +        f.complete(v1);
2506 +        final CompletableFuture<Void> h = m.acceptEither(f, g, r);
2507 +
2508 +        // unspecified behavior
2509 +        Integer v;
2510 +        try {
2511 +            assertNull(h.join());
2512 +            assertEquals(1, r.invocationCount);
2513 +            assertEquals(inc(v1), r.value);
2514 +        } catch (CompletionException ok) {
2515 +            checkCompletedWithWrappedCancellationException(h);
2516 +            assertEquals(0, r.invocationCount);
2517 +        }
2518 +
2519 +        checkCancelled(g);
2520 +        checkCompletedNormally(f, v1);
2521 +    }}
2522 +
2523 +    public void testAcceptEither_sourceCancelled4() {
2524 +        for (ExecutionMode m : ExecutionMode.values())
2525 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2526 +        for (Integer v1 : new Integer[] { 1, null })
2527 +    {
2528 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2529 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2530 +        final IncAction r = new IncAction();
2531 +
2532 +        assertTrue(f.cancel(mayInterruptIfRunning));
2533 +        g.complete(v1);
2534 +        final CompletableFuture<Void> h = m.acceptEither(f, g, r);
2535 +
2536 +        // unspecified behavior
2537 +        Integer v;
2538 +        try {
2539 +            assertNull(h.join());
2540 +            assertEquals(1, r.invocationCount);
2541 +            assertEquals(inc(v1), r.value);
2542 +        } catch (CompletionException ok) {
2543 +            checkCompletedWithWrappedCancellationException(h);
2544 +            assertEquals(0, r.invocationCount);
2545 +        }
2546 +
2547 +        checkCancelled(f);
2548 +        checkCompletedNormally(g, v1);
2549 +    }}
2550 +
2551 +    /**
2552 +     * runAfterEither result completes normally after normal completion
2553 +     * of either source
2554 +     */
2555 +    public void testRunAfterEither_normalCompletion1() {
2556 +        for (ExecutionMode m : ExecutionMode.values())
2557 +        for (Integer v1 : new Integer[] { 1, null })
2558 +        for (Integer v2 : new Integer[] { 2, null })
2559 +    {
2560 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2561 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2562 +        final Noop r = new Noop();
2563 +        final CompletableFuture<Void> h = m.runAfterEither(f, g, r);
2564 +
2565 +        f.complete(v1);
2566 +        checkCompletedNormally(h, null);
2567 +        assertEquals(1, r.invocationCount);
2568 +        g.complete(v2);
2569 +
2570 +        checkCompletedNormally(f, v1);
2571 +        checkCompletedNormally(g, v2);
2572 +        checkCompletedNormally(h, null);
2573 +        assertEquals(1, r.invocationCount);
2574 +    }}
2575 +
2576 +    public void testRunAfterEither_normalCompletion2() {
2577 +        for (ExecutionMode m : ExecutionMode.values())
2578 +        for (Integer v1 : new Integer[] { 1, null })
2579 +        for (Integer v2 : new Integer[] { 2, null })
2580 +    {
2581 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2582 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2583 +        final Noop r = new Noop();
2584 +        final CompletableFuture<Void> h = m.runAfterEither(f, g, r);
2585 +
2586 +        g.complete(v2);
2587 +        checkCompletedNormally(h, null);
2588 +        assertEquals(1, r.invocationCount);
2589 +        f.complete(v1);
2590 +
2591 +        checkCompletedNormally(f, v1);
2592 +        checkCompletedNormally(g, v2);
2593 +        checkCompletedNormally(h, null);
2594 +        assertEquals(1, r.invocationCount);
2595 +        }}
2596 +
2597 +    public void testRunAfterEither_normalCompletion3() {
2598 +        for (ExecutionMode m : ExecutionMode.values())
2599 +        for (Integer v1 : new Integer[] { 1, null })
2600 +        for (Integer v2 : new Integer[] { 2, null })
2601 +    {
2602 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2603 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2604 +        final Noop r = new Noop();
2605 +
2606 +        f.complete(v1);
2607 +        g.complete(v2);
2608 +        final CompletableFuture<Void> h = m.runAfterEither(f, g, r);
2609 +
2610 +        checkCompletedNormally(h, null);
2611 +        checkCompletedNormally(f, v1);
2612 +        checkCompletedNormally(g, v2);
2613 +        assertEquals(1, r.invocationCount);
2614 +    }}
2615 +
2616 +    /**
2617 +     * runAfterEither result completes exceptionally after exceptional
2618 +     * completion of either source
2619 +     */
2620 +    public void testRunAfterEither_exceptionalCompletion1() {
2621 +        for (ExecutionMode m : ExecutionMode.values())
2622 +        for (Integer v1 : new Integer[] { 1, null })
2623 +    {
2624 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2625 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2626 +        final Noop r = new Noop();
2627 +        final CompletableFuture<Void> h = m.runAfterEither(f, g, r);
2628 +        final CFException ex = new CFException();
2629 +
2630 +        f.completeExceptionally(ex);
2631 +        checkCompletedWithWrappedCFException(h, ex);
2632 +        g.complete(v1);
2633 +
2634 +        assertEquals(0, r.invocationCount);
2635 +        checkCompletedNormally(g, v1);
2636 +        checkCompletedWithWrappedCFException(f, ex);
2637 +        checkCompletedWithWrappedCFException(h, ex);
2638 +    }}
2639 +
2640 +    public void testRunAfterEither_exceptionalCompletion2() {
2641 +        for (ExecutionMode m : ExecutionMode.values())
2642 +        for (Integer v1 : new Integer[] { 1, null })
2643 +    {
2644 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2645 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2646 +        final Noop r = new Noop();
2647 +        final CompletableFuture<Void> h = m.runAfterEither(f, g, r);
2648 +        final CFException ex = new CFException();
2649 +
2650 +        g.completeExceptionally(ex);
2651 +        checkCompletedWithWrappedCFException(h, ex);
2652 +        f.complete(v1);
2653 +
2654 +        assertEquals(0, r.invocationCount);
2655 +        checkCompletedNormally(f, v1);
2656 +        checkCompletedWithWrappedCFException(g, ex);
2657 +        checkCompletedWithWrappedCFException(h, ex);
2658 +    }}
2659 +
2660 +    public void testRunAfterEither_exceptionalCompletion3() {
2661 +        for (ExecutionMode m : ExecutionMode.values())
2662 +        for (Integer v1 : new Integer[] { 1, null })
2663 +    {
2664 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2665 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2666 +        final Noop r = new Noop();
2667 +        final CFException ex = new CFException();
2668 +
2669 +        g.completeExceptionally(ex);
2670 +        f.complete(v1);
2671 +        final CompletableFuture<Void> h = m.runAfterEither(f, g, r);
2672 +
2673 +        // unspecified behavior
2674 +        Integer v;
2675 +        try {
2676 +            assertNull(h.join());
2677 +            assertEquals(1, r.invocationCount);
2678 +        } catch (CompletionException ok) {
2679 +            checkCompletedWithWrappedCFException(h, ex);
2680 +            assertEquals(0, r.invocationCount);
2681 +        }
2682 +
2683 +        checkCompletedWithWrappedCFException(g, ex);
2684 +        checkCompletedNormally(f, v1);
2685 +    }}
2686 +
2687 +    public void testRunAfterEither_exceptionalCompletion4() {
2688 +        for (ExecutionMode m : ExecutionMode.values())
2689 +        for (Integer v1 : new Integer[] { 1, null })
2690 +    {
2691 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2692 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2693 +        final Noop r = new Noop();
2694 +        final CFException ex = new CFException();
2695 +
2696 +        f.completeExceptionally(ex);
2697 +        g.complete(v1);
2698 +        final CompletableFuture<Void> h = m.runAfterEither(f, g, r);
2699 +
2700 +        // unspecified behavior
2701 +        Integer v;
2702 +        try {
2703 +            assertNull(h.join());
2704 +            assertEquals(1, r.invocationCount);
2705 +        } catch (CompletionException ok) {
2706 +            checkCompletedWithWrappedCFException(h, ex);
2707 +            assertEquals(0, r.invocationCount);
2708 +        }
2709 +
2710 +        checkCompletedWithWrappedCFException(f, ex);
2711 +        checkCompletedNormally(g, v1);
2712 +    }}
2713 +
2714 +    /**
2715 +     * runAfterEither result completes exceptionally if action does
2716 +     */
2717 +    public void testRunAfterEither_actionFailed1() {
2718 +        for (ExecutionMode m : ExecutionMode.values())
2719 +        for (Integer v1 : new Integer[] { 1, null })
2720 +        for (Integer v2 : new Integer[] { 2, null })
2721 +    {
2722 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2723 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2724 +        final FailingNoop r = new FailingNoop();
2725 +        final CompletableFuture<Void> h = m.runAfterEither(f, g, r);
2726 +
2727 +        f.complete(v1);
2728 +        checkCompletedWithWrappedCFException(h);
2729 +        g.complete(v2);
2730 +        checkCompletedNormally(f, v1);
2731 +        checkCompletedNormally(g, v2);
2732 +    }}
2733 +
2734 +    public void testRunAfterEither_actionFailed2() {
2735 +        for (ExecutionMode m : ExecutionMode.values())
2736 +        for (Integer v1 : new Integer[] { 1, null })
2737 +        for (Integer v2 : new Integer[] { 2, null })
2738 +    {
2739 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2740 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2741 +        final FailingNoop r = new FailingNoop();
2742 +        final CompletableFuture<Void> h = m.runAfterEither(f, g, r);
2743 +
2744 +        g.complete(v2);
2745 +        checkCompletedWithWrappedCFException(h);
2746 +        f.complete(v1);
2747 +        checkCompletedNormally(f, v1);
2748 +        checkCompletedNormally(g, v2);
2749 +    }}
2750 +
2751 +    /**
2752 +     * runAfterEither result completes exceptionally if either source cancelled
2753 +     */
2754 +    public void testRunAfterEither_sourceCancelled1() {
2755 +        for (ExecutionMode m : ExecutionMode.values())
2756 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2757 +        for (Integer v1 : new Integer[] { 1, null })
2758 +    {
2759 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2760 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2761 +        final Noop r = new Noop();
2762 +        final CompletableFuture<Void> h = m.runAfterEither(f, g, r);
2763 +
2764 +        assertTrue(f.cancel(mayInterruptIfRunning));
2765 +        checkCompletedWithWrappedCancellationException(h);
2766 +        g.complete(v1);
2767 +
2768 +        checkCancelled(f);
2769 +        assertEquals(0, r.invocationCount);
2770 +        checkCompletedNormally(g, v1);
2771 +        checkCompletedWithWrappedCancellationException(h);
2772 +    }}
2773 +
2774 +    public void testRunAfterEither_sourceCancelled2() {
2775 +        for (ExecutionMode m : ExecutionMode.values())
2776 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2777 +        for (Integer v1 : new Integer[] { 1, null })
2778 +    {
2779 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2780 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2781 +        final Noop r = new Noop();
2782 +        final CompletableFuture<Void> h = m.runAfterEither(f, g, r);
2783 +
2784 +        assertTrue(g.cancel(mayInterruptIfRunning));
2785 +        checkCompletedWithWrappedCancellationException(h);
2786 +        f.complete(v1);
2787 +
2788 +        checkCancelled(g);
2789 +        assertEquals(0, r.invocationCount);
2790 +        checkCompletedNormally(f, v1);
2791 +        checkCompletedWithWrappedCancellationException(h);
2792 +    }}
2793 +
2794 +    public void testRunAfterEither_sourceCancelled3() {
2795 +        for (ExecutionMode m : ExecutionMode.values())
2796 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2797 +        for (Integer v1 : new Integer[] { 1, null })
2798 +    {
2799 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2800 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2801 +        final Noop r = new Noop();
2802 +
2803 +        assertTrue(g.cancel(mayInterruptIfRunning));
2804 +        f.complete(v1);
2805 +        final CompletableFuture<Void> h = m.runAfterEither(f, g, r);
2806 +
2807 +        // unspecified behavior
2808 +        Integer v;
2809 +        try {
2810 +            assertNull(h.join());
2811 +            assertEquals(1, r.invocationCount);
2812 +        } catch (CompletionException ok) {
2813 +            checkCompletedWithWrappedCancellationException(h);
2814 +            assertEquals(0, r.invocationCount);
2815 +        }
2816 +
2817 +        checkCancelled(g);
2818 +        checkCompletedNormally(f, v1);
2819 +    }}
2820 +
2821 +    public void testRunAfterEither_sourceCancelled4() {
2822 +        for (ExecutionMode m : ExecutionMode.values())
2823 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2824 +        for (Integer v1 : new Integer[] { 1, null })
2825 +    {
2826 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2827 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2828 +        final Noop r = new Noop();
2829 +
2830 +        assertTrue(f.cancel(mayInterruptIfRunning));
2831 +        g.complete(v1);
2832 +        final CompletableFuture<Void> h = m.runAfterEither(f, g, r);
2833 +
2834 +        // unspecified behavior
2835 +        Integer v;
2836 +        try {
2837 +            assertNull(h.join());
2838 +            assertEquals(1, r.invocationCount);
2839 +        } catch (CompletionException ok) {
2840 +            checkCompletedWithWrappedCancellationException(h);
2841 +            assertEquals(0, r.invocationCount);
2842 +        }
2843 +
2844 +        checkCancelled(f);
2845 +        checkCompletedNormally(g, v1);
2846 +    }}
2847 +
2848 +    /**
2849 +     * thenCompose result completes normally after normal completion of source
2850 +     */
2851 +    public void testThenCompose_normalCompletion() {
2852 +        for (ExecutionMode m : ExecutionMode.values())
2853 +        for (boolean createIncomplete : new boolean[] { true, false })
2854 +        for (Integer v1 : new Integer[] { 1, null })
2855 +    {
2856 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2857 +        final CompletableFutureInc r = new CompletableFutureInc();
2858 +        if (!createIncomplete) f.complete(v1);
2859 +        final CompletableFuture<Integer> g = f.thenCompose(r);
2860 +        if (createIncomplete) f.complete(v1);
2861 +
2862 +        checkCompletedNormally(g, inc(v1));
2863 +        checkCompletedNormally(f, v1);
2864 +        assertEquals(1, r.invocationCount);
2865 +    }}
2866 +
2867 +    /**
2868 +     * thenCompose result completes exceptionally after exceptional
2869 +     * completion of source
2870 +     */
2871 +    public void testThenCompose_exceptionalCompletion() {
2872 +        for (ExecutionMode m : ExecutionMode.values())
2873 +        for (boolean createIncomplete : new boolean[] { true, false })
2874 +    {
2875 +        final CFException ex = new CFException();
2876 +        final CompletableFutureInc r = new CompletableFutureInc();
2877 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2878 +        if (!createIncomplete) f.completeExceptionally(ex);
2879 +        final CompletableFuture<Integer> g = f.thenCompose(r);
2880 +        if (createIncomplete) f.completeExceptionally(ex);
2881 +
2882 +        checkCompletedWithWrappedCFException(g, ex);
2883 +        checkCompletedWithWrappedCFException(f, ex);
2884 +        assertEquals(0, r.invocationCount);
2885 +    }}
2886 +
2887 +    /**
2888 +     * thenCompose result completes exceptionally if action does
2889 +     */
2890 +    public void testThenCompose_actionFailed() {
2891 +        for (ExecutionMode m : ExecutionMode.values())
2892 +        for (boolean createIncomplete : new boolean[] { true, false })
2893 +        for (Integer v1 : new Integer[] { 1, null })
2894 +    {
2895 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2896 +        final FailingCompletableFutureFunction r
2897 +            = new FailingCompletableFutureFunction();
2898 +        if (!createIncomplete) f.complete(v1);
2899 +        final CompletableFuture<Integer> g = f.thenCompose(r);
2900 +        if (createIncomplete) f.complete(v1);
2901 +
2902 +        checkCompletedWithWrappedCFException(g);
2903 +        checkCompletedNormally(f, v1);
2904 +    }}
2905 +
2906 +    /**
2907 +     * thenCompose result completes exceptionally if source cancelled
2908 +     */
2909 +    public void testThenCompose_sourceCancelled() {
2910 +        for (ExecutionMode m : ExecutionMode.values())
2911 +        for (boolean createIncomplete : new boolean[] { true, false })
2912 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2913 +    {
2914 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2915 +        final CompletableFutureInc r = new CompletableFutureInc();
2916 +        if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
2917 +        final CompletableFuture<Integer> g = f.thenCompose(r);
2918 +        if (createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
2919 +
2920 +        checkCompletedWithWrappedCancellationException(g);
2921 +        checkCancelled(f);
2922 +    }}
2923 +
2924 +    // asyncs
2925 +
2926 +    /**
2927 +     * thenApplyAsync result completes normally after normal completion of source
2928 +     */
2929 +    public void testThenApplyAsync() {
2930 +        CompletableFuture<Integer> f = new CompletableFuture<>();
2931 +        CompletableFuture<Integer> g = f.thenApplyAsync(inc);
2932 +        f.complete(one);
2933 +        checkCompletedNormally(g, two);
2934 +    }
2935 +
2936 +    /**
2937 +     * thenApplyAsync result completes exceptionally after exceptional
2938 +     * completion of source
2939 +     */
2940 +    public void testThenApplyAsync2() {
2941 +        CompletableFuture<Integer> f = new CompletableFuture<>();
2942 +        CompletableFuture<Integer> g = f.thenApplyAsync(inc);
2943 +        f.completeExceptionally(new CFException());
2944 +        checkCompletedWithWrappedCFException(g);
2945 +    }
2946 +
2947 +    /**
2948 +     * thenApplyAsync result completes exceptionally if action does
2949 +     */
2950 +    public void testThenApplyAsync3() {
2951 +        CompletableFuture<Integer> f = new CompletableFuture<>();
2952 +        FailingFunction r = new FailingFunction();
2953 +        CompletableFuture<Integer> g = f.thenApplyAsync(r);
2954 +        f.complete(null);
2955 +        checkCompletedWithWrappedCFException(g);
2956 +    }
2957 +
2958 +    /**
2959 +     * thenApplyAsync result completes exceptionally if source cancelled
2960 +     */
2961 +    public void testThenApplyAsync4() {
2962 +        CompletableFuture<Integer> f = new CompletableFuture<>();
2963 +        CompletableFuture<Integer> g = f.thenApplyAsync(inc);
2964 +        assertTrue(f.cancel(true));
2965 +        checkCompletedWithWrappedCancellationException(g);
2966 +    }
2967 +
2968 +    /**
2969 +     * thenAcceptAsync result completes normally after normal
2970 +     * completion of source
2971 +     */
2972 +    public void testThenAcceptAsync() {
2973 +        CompletableFuture<Integer> f = new CompletableFuture<>();
2974 +        IncAction r = new IncAction();
2975 +        CompletableFuture<Void> g = f.thenAcceptAsync(r);
2976 +        f.complete(one);
2977 +        checkCompletedNormally(g, null);
2978 +        assertEquals(r.value, (Integer) 2);
2979 +    }
2980 +
2981 +    /**
2982 +     * thenAcceptAsync result completes exceptionally after exceptional
2983 +     * completion of source
2984 +     */
2985 +    public void testThenAcceptAsync2() {
2986 +        CompletableFuture<Integer> f = new CompletableFuture<>();
2987 +        IncAction r = new IncAction();
2988 +        CompletableFuture<Void> g = f.thenAcceptAsync(r);
2989 +        f.completeExceptionally(new CFException());
2990 +        checkCompletedWithWrappedCFException(g);
2991 +    }
2992 +
2993 +    /**
2994 +     * thenAcceptAsync result completes exceptionally if action does
2995 +     */
2996 +    public void testThenAcceptAsync3() {
2997 +        CompletableFuture<Integer> f = new CompletableFuture<>();
2998 +        FailingConsumer r = new FailingConsumer();
2999 +        CompletableFuture<Void> g = f.thenAcceptAsync(r);
3000 +        f.complete(null);
3001 +        checkCompletedWithWrappedCFException(g);
3002 +    }
3003 +
3004 +    /**
3005 +     * thenAcceptAsync result completes exceptionally if source cancelled
3006 +     */
3007 +    public void testThenAcceptAsync4() {
3008 +        CompletableFuture<Integer> f = new CompletableFuture<>();
3009 +        IncAction r = new IncAction();
3010 +        CompletableFuture<Void> g = f.thenAcceptAsync(r);
3011 +        assertTrue(f.cancel(true));
3012 +        checkCompletedWithWrappedCancellationException(g);
3013 +    }
3014 +
3015 +    // async with explicit executors
3016 +
3017 +    /**
3018 +     * thenApplyAsync result completes normally after normal completion of source
3019 +     */
3020 +    public void testThenApplyAsyncE() {
3021 +        CompletableFuture<Integer> f = new CompletableFuture<>();
3022 +        CompletableFuture<Integer> g = f.thenApplyAsync(inc, new ThreadExecutor());
3023 +        f.complete(one);
3024 +        checkCompletedNormally(g, two);
3025 +    }
3026 +
3027 +    /**
3028 +     * thenApplyAsync result completes exceptionally after exceptional
3029 +     * completion of source
3030 +     */
3031 +    public void testThenApplyAsync2E() {
3032 +        CompletableFuture<Integer> f = new CompletableFuture<>();
3033 +        CompletableFuture<Integer> g = f.thenApplyAsync(inc, new ThreadExecutor());
3034 +        f.completeExceptionally(new CFException());
3035 +        checkCompletedWithWrappedCFException(g);
3036 +    }
3037 +
3038 +    /**
3039 +     * thenApplyAsync result completes exceptionally if action does
3040 +     */
3041 +    public void testThenApplyAsync3E() {
3042 +        CompletableFuture<Integer> f = new CompletableFuture<>();
3043 +        FailingFunction r = new FailingFunction();
3044 +        CompletableFuture<Integer> g = f.thenApplyAsync(r, new ThreadExecutor());
3045 +        f.complete(null);
3046 +        checkCompletedWithWrappedCFException(g);
3047 +    }
3048 +
3049 +    /**
3050 +     * thenApplyAsync result completes exceptionally if source cancelled
3051 +     */
3052 +    public void testThenApplyAsync4E() {
3053 +        CompletableFuture<Integer> f = new CompletableFuture<>();
3054 +        CompletableFuture<Integer> g = f.thenApplyAsync(inc, new ThreadExecutor());
3055 +        assertTrue(f.cancel(true));
3056 +        checkCompletedWithWrappedCancellationException(g);
3057 +    }
3058 +
3059 +    /**
3060 +     * thenAcceptAsync result completes normally after normal
3061 +     * completion of source
3062 +     */
3063 +    public void testThenAcceptAsyncE() {
3064 +        CompletableFuture<Integer> f = new CompletableFuture<>();
3065 +        IncAction r = new IncAction();
3066 +        CompletableFuture<Void> g = f.thenAcceptAsync(r, new ThreadExecutor());
3067 +        f.complete(one);
3068 +        checkCompletedNormally(g, null);
3069 +        assertEquals(r.value, (Integer) 2);
3070 +    }
3071 +
3072 +    /**
3073 +     * thenAcceptAsync result completes exceptionally after exceptional
3074 +     * completion of source
3075 +     */
3076 +    public void testThenAcceptAsync2E() {
3077 +        CompletableFuture<Integer> f = new CompletableFuture<>();
3078 +        IncAction r = new IncAction();
3079 +        CompletableFuture<Void> g = f.thenAcceptAsync(r, new ThreadExecutor());
3080 +        f.completeExceptionally(new CFException());
3081 +        checkCompletedWithWrappedCFException(g);
3082 +    }
3083 +
3084 +    /**
3085 +     * thenAcceptAsync result completes exceptionally if action does
3086 +     */
3087 +    public void testThenAcceptAsync3E() {
3088 +        CompletableFuture<Integer> f = new CompletableFuture<>();
3089 +        FailingConsumer r = new FailingConsumer();
3090 +        CompletableFuture<Void> g = f.thenAcceptAsync(r, new ThreadExecutor());
3091 +        f.complete(null);
3092 +        checkCompletedWithWrappedCFException(g);
3093 +    }
3094 +
3095 +    /**
3096 +     * thenAcceptAsync result completes exceptionally if source cancelled
3097 +     */
3098 +    public void testThenAcceptAsync4E() {
3099 +        CompletableFuture<Integer> f = new CompletableFuture<>();
3100 +        IncAction r = new IncAction();
3101 +        CompletableFuture<Void> g = f.thenAcceptAsync(r, new ThreadExecutor());
3102 +        assertTrue(f.cancel(true));
3103 +        checkCompletedWithWrappedCancellationException(g);
3104 +    }
3105 +
3106 +    // other static methods
3107 +
3108 +    /**
3109 +     * allOf(no component futures) returns a future completed normally
3110 +     * with the value null
3111 +     */
3112 +    public void testAllOf_empty() throws Exception {
3113 +        CompletableFuture<Void> f = CompletableFuture.allOf();
3114 +        checkCompletedNormally(f, null);
3115 +    }
3116 +
3117 +    /**
3118 +     * allOf returns a future completed normally with the value null
3119 +     * when all components complete normally
3120 +     */
3121 +    public void testAllOf_normal() throws Exception {
3122 +        for (int k = 1; k < 20; ++k) {
3123 +            CompletableFuture<Integer>[] fs = (CompletableFuture<Integer>[]) new CompletableFuture[k];
3124 +            for (int i = 0; i < k; ++i)
3125 +                fs[i] = new CompletableFuture<>();
3126 +            CompletableFuture<Void> f = CompletableFuture.allOf(fs);
3127 +            for (int i = 0; i < k; ++i) {
3128 +                checkIncomplete(f);
3129 +                checkIncomplete(CompletableFuture.allOf(fs));
3130 +                fs[i].complete(one);
3131 +            }
3132 +            checkCompletedNormally(f, null);
3133 +            checkCompletedNormally(CompletableFuture.allOf(fs), null);
3134 +        }
3135 +    }
3136 +
3137 +    /**
3138 +     * anyOf(no component futures) returns an incomplete future
3139 +     */
3140 +    public void testAnyOf_empty() throws Exception {
3141 +        CompletableFuture<Object> f = CompletableFuture.anyOf();
3142 +        checkIncomplete(f);
3143 +    }
3144 +
3145 +    /**
3146 +     * anyOf returns a future completed normally with a value when
3147 +     * a component future does
3148 +     */
3149 +    public void testAnyOf_normal() throws Exception {
3150 +        for (int k = 0; k < 10; ++k) {
3151 +            CompletableFuture[] fs = new CompletableFuture[k];
3152 +            for (int i = 0; i < k; ++i)
3153 +                fs[i] = new CompletableFuture<>();
3154 +            CompletableFuture<Object> f = CompletableFuture.anyOf(fs);
3155 +            checkIncomplete(f);
3156 +            for (int i = 0; i < k; ++i) {
3157 +                fs[i].complete(one);
3158 +                checkCompletedNormally(f, one);
3159 +                checkCompletedNormally(CompletableFuture.anyOf(fs), one);
3160 +            }
3161 +        }
3162 +    }
3163 +
3164 +    /**
3165 +     * anyOf result completes exceptionally when any component does.
3166 +     */
3167 +    public void testAnyOf_exceptional() throws Exception {
3168 +        for (int k = 0; k < 10; ++k) {
3169 +            CompletableFuture[] fs = new CompletableFuture[k];
3170 +            for (int i = 0; i < k; ++i)
3171 +                fs[i] = new CompletableFuture<>();
3172 +            CompletableFuture<Object> f = CompletableFuture.anyOf(fs);
3173 +            checkIncomplete(f);
3174 +            for (int i = 0; i < k; ++i) {
3175 +                fs[i].completeExceptionally(new CFException());
3176 +                checkCompletedWithWrappedCFException(f);
3177 +                checkCompletedWithWrappedCFException(CompletableFuture.anyOf(fs));
3178 +            }
3179 +        }
3180 +    }
3181 +
3182 +    /**
3183 +     * Completion methods throw NullPointerException with null arguments
3184 +     */
3185 +    public void testNPE() {
3186 +        CompletableFuture<Integer> f = new CompletableFuture<>();
3187 +        CompletableFuture<Integer> g = new CompletableFuture<>();
3188 +        CompletableFuture<Integer> nullFuture = (CompletableFuture<Integer>)null;
3189 +        CompletableFuture<?> h;
3190 +        ThreadExecutor exec = new ThreadExecutor();
3191 +
3192 +        Runnable[] throwingActions = {
3193 +            () -> CompletableFuture.supplyAsync(null),
3194 +            () -> CompletableFuture.supplyAsync(null, exec),
3195 +            () -> CompletableFuture.supplyAsync(supplyOne, null),
3196 +
3197 +            () -> CompletableFuture.runAsync(null),
3198 +            () -> CompletableFuture.runAsync(null, exec),
3199 +            () -> CompletableFuture.runAsync(() -> {}, null),
3200 +
3201 +            () -> f.completeExceptionally(null),
3202 +
3203 +            () -> f.thenApply(null),
3204 +            () -> f.thenApplyAsync(null),
3205 +            () -> f.thenApplyAsync((x) -> x, null),
3206 +            () -> f.thenApplyAsync(null, exec),
3207 +
3208 +            () -> f.thenAccept(null),
3209 +            () -> f.thenAcceptAsync(null),
3210 +            () -> f.thenAcceptAsync((x) -> {} , null),
3211 +            () -> f.thenAcceptAsync(null, exec),
3212 +
3213 +            () -> f.thenRun(null),
3214 +            () -> f.thenRunAsync(null),
3215 +            () -> f.thenRunAsync(() -> {} , null),
3216 +            () -> f.thenRunAsync(null, exec),
3217 +
3218 +            () -> f.thenCombine(g, null),
3219 +            () -> f.thenCombineAsync(g, null),
3220 +            () -> f.thenCombineAsync(g, null, exec),
3221 +            () -> f.thenCombine(nullFuture, (x, y) -> x),
3222 +            () -> f.thenCombineAsync(nullFuture, (x, y) -> x),
3223 +            () -> f.thenCombineAsync(nullFuture, (x, y) -> x, exec),
3224 +            () -> f.thenCombineAsync(g, (x, y) -> x, null),
3225 +
3226 +            () -> f.thenAcceptBoth(g, null),
3227 +            () -> f.thenAcceptBothAsync(g, null),
3228 +            () -> f.thenAcceptBothAsync(g, null, exec),
3229 +            () -> f.thenAcceptBoth(nullFuture, (x, y) -> {}),
3230 +            () -> f.thenAcceptBothAsync(nullFuture, (x, y) -> {}),
3231 +            () -> f.thenAcceptBothAsync(nullFuture, (x, y) -> {}, exec),
3232 +            () -> f.thenAcceptBothAsync(g, (x, y) -> {}, null),
3233 +
3234 +            () -> f.runAfterBoth(g, null),
3235 +            () -> f.runAfterBothAsync(g, null),
3236 +            () -> f.runAfterBothAsync(g, null, exec),
3237 +            () -> f.runAfterBoth(nullFuture, () -> {}),
3238 +            () -> f.runAfterBothAsync(nullFuture, () -> {}),
3239 +            () -> f.runAfterBothAsync(nullFuture, () -> {}, exec),
3240 +            () -> f.runAfterBothAsync(g, () -> {}, null),
3241 +
3242 +            () -> f.applyToEither(g, null),
3243 +            () -> f.applyToEitherAsync(g, null),
3244 +            () -> f.applyToEitherAsync(g, null, exec),
3245 +            () -> f.applyToEither(nullFuture, (x) -> x),
3246 +            () -> f.applyToEitherAsync(nullFuture, (x) -> x),
3247 +            () -> f.applyToEitherAsync(nullFuture, (x) -> x, exec),
3248 +            () -> f.applyToEitherAsync(g, (x) -> x, null),
3249 +
3250 +            () -> f.acceptEither(g, null),
3251 +            () -> f.acceptEitherAsync(g, null),
3252 +            () -> f.acceptEitherAsync(g, null, exec),
3253 +            () -> f.acceptEither(nullFuture, (x) -> {}),
3254 +            () -> f.acceptEitherAsync(nullFuture, (x) -> {}),
3255 +            () -> f.acceptEitherAsync(nullFuture, (x) -> {}, exec),
3256 +            () -> f.acceptEitherAsync(g, (x) -> {}, null),
3257 +
3258 +            () -> f.runAfterEither(g, null),
3259 +            () -> f.runAfterEitherAsync(g, null),
3260 +            () -> f.runAfterEitherAsync(g, null, exec),
3261 +            () -> f.runAfterEither(nullFuture, () -> {}),
3262 +            () -> f.runAfterEitherAsync(nullFuture, () -> {}),
3263 +            () -> f.runAfterEitherAsync(nullFuture, () -> {}, exec),
3264 +            () -> f.runAfterEitherAsync(g, () -> {}, null),
3265 +
3266 +            () -> f.thenCompose(null),
3267 +            () -> f.thenComposeAsync(null),
3268 +            () -> f.thenComposeAsync(new CompletableFutureInc(), null),
3269 +            () -> f.thenComposeAsync(null, exec),
3270 +
3271 +            () -> f.exceptionally(null),
3272 +
3273 +            () -> f.handle(null),
3274 +
3275 +            () -> CompletableFuture.allOf((CompletableFuture<?>)null),
3276 +            () -> CompletableFuture.allOf((CompletableFuture<?>[])null),
3277 +            () -> CompletableFuture.allOf(f, null),
3278 +            () -> CompletableFuture.allOf(null, f),
3279 +
3280 +            () -> CompletableFuture.anyOf((CompletableFuture<?>)null),
3281 +            () -> CompletableFuture.anyOf((CompletableFuture<?>[])null),
3282 +            () -> CompletableFuture.anyOf(f, null),
3283 +            () -> CompletableFuture.anyOf(null, f),
3284 +
3285 +            () -> f.obtrudeException(null),
3286 +        };
3287 +
3288 +        assertThrows(NullPointerException.class, throwingActions);
3289 +        assertEquals(0, exec.count.get());
3290 +    }
3291 +
3292 +    /**
3293 +     * toCompletableFuture returns this CompletableFuture.
3294 +     */
3295 +    public void testToCompletableFuture() {
3296 +        CompletableFuture<Integer> f = new CompletableFuture<>();
3297 +        assertSame(f, f.toCompletableFuture());
3298 +    }
3299 +
3300 +    /**
3301 +     * whenComplete action executes on normal completion, propagating
3302 +     * source result.
3303 +     */
3304 +    public void testWhenComplete_normalCompletion1() {
3305 +        for (ExecutionMode m : ExecutionMode.values())
3306 +        for (boolean createIncomplete : new boolean[] { true, false })
3307 +        for (Integer v1 : new Integer[] { 1, null })
3308 +    {
3309 +        final AtomicInteger a = new AtomicInteger(0);
3310 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
3311 +        if (!createIncomplete) f.complete(v1);
3312 +        final CompletableFuture<Integer> g = m.whenComplete
3313 +            (f,
3314 +             (Integer x, Throwable t) -> {
3315 +                threadAssertSame(x, v1);
3316 +                threadAssertNull(t);
3317 +                a.getAndIncrement();
3318 +            });
3319 +        if (createIncomplete) f.complete(v1);
3320 +
3321 +        checkCompletedNormally(g, v1);
3322 +        checkCompletedNormally(f, v1);
3323 +        assertEquals(1, a.get());
3324 +    }}
3325 +
3326 +    /**
3327 +     * whenComplete action executes on exceptional completion, propagating
3328 +     * source result.
3329 +     */
3330 +    public void testWhenComplete_exceptionalCompletion() {
3331 +        for (ExecutionMode m : ExecutionMode.values())
3332 +        for (boolean createIncomplete : new boolean[] { true, false })
3333 +        for (Integer v1 : new Integer[] { 1, null })
3334 +    {
3335 +        final AtomicInteger a = new AtomicInteger(0);
3336 +        final CFException ex = new CFException();
3337 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
3338 +        if (!createIncomplete) f.completeExceptionally(ex);
3339 +        final CompletableFuture<Integer> g = m.whenComplete
3340 +            (f,
3341 +             (Integer x, Throwable t) -> {
3342 +                threadAssertNull(x);
3343 +                threadAssertSame(t, ex);
3344 +                a.getAndIncrement();
3345 +            });
3346 +        if (createIncomplete) f.completeExceptionally(ex);
3347 +        checkCompletedWithWrappedCFException(f, ex);
3348 +        checkCompletedWithWrappedCFException(g, ex);
3349 +        assertEquals(1, a.get());
3350 +    }}
3351 +
3352 +    /**
3353 +     * whenComplete action executes on cancelled source, propagating
3354 +     * CancellationException.
3355 +     */
3356 +    public void testWhenComplete_sourceCancelled() {
3357 +        for (ExecutionMode m : ExecutionMode.values())
3358 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
3359 +        for (boolean createIncomplete : new boolean[] { true, false })
3360 +    {
3361 +        final AtomicInteger a = new AtomicInteger(0);
3362 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
3363 +        if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
3364 +        final CompletableFuture<Integer> g = m.whenComplete
3365 +            (f,
3366 +             (Integer x, Throwable t) -> {
3367 +                threadAssertNull(x);
3368 +                threadAssertTrue(t instanceof CancellationException);
3369 +                a.getAndIncrement();
3370 +            });
3371 +        if (createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
3372 +
3373 +        //try { g.join(); } catch (Throwable t) { throw new Error(t); }
3374 +        checkCompletedWithWrappedCancellationException(g);
3375 +        checkCancelled(f);
3376 +        assertEquals(1, a.get());
3377 +    }}
3378 +
3379 +    /**
3380 +     * If a whenComplete action throws an exception when triggered by
3381 +     * a normal completion, it completes exceptionally
3382 +     */
3383 +    public void testWhenComplete_actionFailed() {
3384 +        for (boolean createIncomplete : new boolean[] { true, false })
3385 +        for (ExecutionMode m : ExecutionMode.values())
3386 +        for (Integer v1 : new Integer[] { 1, null })
3387 +    {
3388 +        final AtomicInteger a = new AtomicInteger(0);
3389 +        final CFException ex = new CFException();
3390 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
3391 +        if (!createIncomplete) f.complete(v1);
3392 +        final CompletableFuture<Integer> g = m.whenComplete
3393 +            (f,
3394 +             (Integer x, Throwable t) -> {
3395 +                threadAssertSame(x, v1);
3396 +                threadAssertNull(t);
3397 +                a.getAndIncrement();
3398 +                throw ex;
3399 +            });
3400 +        if (createIncomplete) f.complete(v1);
3401 +        checkCompletedNormally(f, v1);
3402 +        checkCompletedWithWrappedCFException(g, ex);
3403 +        assertEquals(1, a.get());
3404 +    }}
3405 +
3406 +    /**
3407 +     * If a whenComplete action throws an exception when triggered by
3408 +     * a source completion that also throws an exception, the source
3409 +     * exception takes precedence.
3410 +     */
3411 +    public void testWhenComplete_actionFailedSourceFailed() {
3412 +        for (boolean createIncomplete : new boolean[] { true, false })
3413 +        for (ExecutionMode m : ExecutionMode.values())
3414 +        for (Integer v1 : new Integer[] { 1, null })
3415 +    {
3416 +        final AtomicInteger a = new AtomicInteger(0);
3417 +        final CFException ex1 = new CFException();
3418 +        final CFException ex2 = new CFException();
3419 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
3420 +
3421 +        if (!createIncomplete) f.completeExceptionally(ex1);
3422 +        final CompletableFuture<Integer> g = m.whenComplete
3423 +            (f,
3424 +             (Integer x, Throwable t) -> {
3425 +                threadAssertSame(t, ex1);
3426 +                threadAssertNull(x);
3427 +                a.getAndIncrement();
3428 +                throw ex2;
3429 +            });
3430 +        if (createIncomplete) f.completeExceptionally(ex1);
3431 +
3432 +        checkCompletedWithWrappedCFException(f, ex1);
3433 +        checkCompletedWithWrappedCFException(g, ex1);
3434 +        assertEquals(1, a.get());
3435 +    }}
3436 +
3437   }

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