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Comparing jsr166/src/test/tck/CompletableFutureTest.java (file contents):
Revision 1.1 by jsr166, Wed Feb 6 19:55:06 2013 UTC vs.
Revision 1.49 by jsr166, Mon Jun 2 19:20:51 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 <        assertTrue(new CompletableFuture<String>().toString()
34 <                   .contains("[Not completed]"));
303 >
304          f = new CompletableFuture<String>();
305 +        assertTrue(f.toString().contains("[Not completed]"));
306 +
307          f.complete("foo");
308          assertTrue(f.toString().contains("[Completed normally]"));
309 +
310          f = new CompletableFuture<String>();
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_normalCompletion() {
1054 +        for (ExecutionMode m : ExecutionMode.values())
1055 +        for (boolean createIncomplete : new boolean[] { true, false })
1056 +        for (Integer v1 : new Integer[] { 1, null })
1057 +    {
1058 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1059 +        final IncFunction r = new IncFunction();
1060 +        if (!createIncomplete) f.complete(v1);
1061 +        final CompletableFuture<Integer> g = m.thenApply(f, r);
1062 +        if (createIncomplete) {
1063 +            checkIncomplete(g);
1064 +            f.complete(v1);
1065 +        }
1066 +
1067 +        checkCompletedNormally(g, inc(v1));
1068 +        checkCompletedNormally(f, v1);
1069 +        assertEquals(1, r.invocationCount);
1070 +    }}
1071 +
1072 +    /**
1073 +     * thenApply result completes exceptionally after exceptional
1074 +     * completion of source
1075 +     */
1076 +    public void testThenApply_exceptionalCompletion() {
1077 +        for (ExecutionMode m : ExecutionMode.values())
1078 +        for (boolean createIncomplete : new boolean[] { true, false })
1079 +    {
1080 +        final CFException ex = new CFException();
1081 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1082 +        final IncFunction r = new IncFunction();
1083 +        if (!createIncomplete) f.completeExceptionally(ex);
1084 +        final CompletableFuture<Integer> g = m.thenApply(f, r);
1085 +        if (createIncomplete) f.completeExceptionally(ex);
1086 +
1087 +        checkCompletedWithWrappedCFException(g, ex);
1088 +        checkCompletedWithWrappedCFException(f, ex);
1089 +        assertEquals(0, r.invocationCount);
1090 +    }}
1091 +
1092 +    /**
1093 +     * thenApply result completes exceptionally if source cancelled
1094 +     */
1095 +    public void testThenApply_sourceCancelled() {
1096 +        for (ExecutionMode m : ExecutionMode.values())
1097 +        for (boolean createIncomplete : new boolean[] { true, false })
1098 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1099 +    {
1100 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1101 +        final IncFunction r = new IncFunction();
1102 +        if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
1103 +        final CompletableFuture<Integer> g = f.thenApply(r);
1104 +        if (createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
1105 +
1106 +        checkCompletedWithWrappedCancellationException(g);
1107 +        checkCancelled(f);
1108 +        assertEquals(0, r.invocationCount);
1109 +    }}
1110 +
1111 +    /**
1112 +     * thenApply result completes exceptionally if action does
1113 +     */
1114 +    public void testThenApply_actionFailed() {
1115 +        for (ExecutionMode m : ExecutionMode.values())
1116 +        for (boolean createIncomplete : new boolean[] { true, false })
1117 +        for (Integer v1 : new Integer[] { 1, null })
1118 +    {
1119 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1120 +        final FailingFunction r = new FailingFunction();
1121 +        if (!createIncomplete) f.complete(v1);
1122 +        final CompletableFuture<Integer> g = f.thenApply(r);
1123 +        if (createIncomplete) f.complete(v1);
1124 +
1125 +        checkCompletedWithWrappedCFException(g);
1126 +        checkCompletedNormally(f, v1);
1127 +    }}
1128 +
1129 +    /**
1130 +     * thenAccept result completes normally after normal completion of source
1131 +     */
1132 +    public void testThenAccept() {
1133 +        CompletableFuture<Integer> f = new CompletableFuture<>();
1134 +        IncAction r = new IncAction();
1135 +        CompletableFuture<Void> g = f.thenAccept(r);
1136 +        f.complete(one);
1137 +        checkCompletedNormally(g, null);
1138 +        assertEquals(r.value, (Integer) 2);
1139 +    }
1140 +
1141 +    /**
1142 +     * thenAccept result completes exceptionally after exceptional
1143 +     * completion of source
1144 +     */
1145 +    public void testThenAccept2() {
1146 +        CompletableFuture<Integer> f = new CompletableFuture<>();
1147 +        IncAction r = new IncAction();
1148 +        CompletableFuture<Void> g = f.thenAccept(r);
1149 +        f.completeExceptionally(new CFException());
1150 +        checkCompletedWithWrappedCFException(g);
1151 +    }
1152 +
1153 +    /**
1154 +     * thenAccept result completes exceptionally if action does
1155 +     */
1156 +    public void testThenAccept3() {
1157 +        CompletableFuture<Integer> f = new CompletableFuture<>();
1158 +        FailingConsumer r = new FailingConsumer();
1159 +        CompletableFuture<Void> g = f.thenAccept(r);
1160 +        f.complete(one);
1161 +        checkCompletedWithWrappedCFException(g);
1162 +        assertEquals(1, r.invocationCount);
1163 +    }
1164 +
1165 +    /**
1166 +     * thenAccept result completes exceptionally if source cancelled
1167 +     */
1168 +    public void testThenAccept4() {
1169 +        CompletableFuture<Integer> f = new CompletableFuture<>();
1170 +        IncAction r = new IncAction();
1171 +        CompletableFuture<Void> g = f.thenAccept(r);
1172 +        assertTrue(f.cancel(true));
1173 +        checkCompletedWithWrappedCancellationException(g);
1174 +    }
1175 +
1176 +    /**
1177 +     * thenCombine result completes normally after normal completion
1178 +     * of sources
1179 +     */
1180 +    public void testThenCombine_normalCompletion1() {
1181 +        for (boolean createIncomplete : new boolean[] { true, false })
1182 +        for (boolean fFirst : new boolean[] { true, false })
1183 +        for (ExecutionMode m : ExecutionMode.values())
1184 +        for (Integer v1 : new Integer[] { 1, null })
1185 +        for (Integer v2 : new Integer[] { 2, null })
1186 +    {
1187 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1188 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1189 +        final SubtractFunction r = new SubtractFunction();
1190 +        CompletableFuture<Integer> h = null;
1191 +        if (createIncomplete) h = m.thenCombine(f, g, r);
1192 +
1193 +        if (fFirst)
1194 +            f.complete(v1);
1195 +        else
1196 +            g.complete(v2);
1197 +        if (createIncomplete) checkIncomplete(h);
1198 +        assertEquals(0, r.invocationCount);
1199 +        if (!fFirst)
1200 +            f.complete(v1);
1201 +        else
1202 +            g.complete(v2);
1203 +        if (!createIncomplete) h = m.thenCombine(f, g, r);
1204 +
1205 +        checkCompletedNormally(h, subtract(v1, v2));
1206 +        checkCompletedNormally(f, v1);
1207 +        checkCompletedNormally(g, v2);
1208 +        assertEquals(1, r.invocationCount);
1209 +    }}
1210 +
1211 +    /**
1212 +     * thenCombine result completes exceptionally after exceptional
1213 +     * completion of either source
1214 +     */
1215 +    public void testThenCombine_exceptionalCompletion1() {
1216 +        for (ExecutionMode m : ExecutionMode.values())
1217 +        for (Integer v1 : new Integer[] { 1, null })
1218 +    {
1219 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1220 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1221 +        final SubtractFunction r = new SubtractFunction();
1222 +        final CompletableFuture<Integer> h = m.thenCombine(f, g, r);
1223 +        final CFException ex = new CFException();
1224 +
1225 +        f.completeExceptionally(ex);
1226 +        checkIncomplete(h);
1227 +        g.complete(v1);
1228 +
1229 +        checkCompletedWithWrappedCFException(h, ex);
1230 +        checkCompletedWithWrappedCFException(f, ex);
1231 +        assertEquals(0, r.invocationCount);
1232 +        checkCompletedNormally(g, v1);
1233 +    }}
1234 +
1235 +    public void testThenCombine_exceptionalCompletion2() {
1236 +        for (ExecutionMode m : ExecutionMode.values())
1237 +        for (Integer v1 : new Integer[] { 1, null })
1238 +    {
1239 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1240 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1241 +        final SubtractFunction r = new SubtractFunction();
1242 +        final CompletableFuture<Integer> h = m.thenCombine(f, g, r);
1243 +        final CFException ex = new CFException();
1244 +
1245 +        g.completeExceptionally(ex);
1246 +        checkIncomplete(h);
1247 +        f.complete(v1);
1248 +
1249 +        checkCompletedWithWrappedCFException(h, ex);
1250 +        checkCompletedWithWrappedCFException(g, ex);
1251 +        assertEquals(0, r.invocationCount);
1252 +        checkCompletedNormally(f, v1);
1253 +    }}
1254 +
1255 +    public void testThenCombine_exceptionalCompletion3() {
1256 +        for (ExecutionMode m : ExecutionMode.values())
1257 +        for (Integer v1 : new Integer[] { 1, null })
1258 +    {
1259 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1260 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1261 +        final SubtractFunction r = new SubtractFunction();
1262 +        final CFException ex = new CFException();
1263 +
1264 +        g.completeExceptionally(ex);
1265 +        f.complete(v1);
1266 +        final CompletableFuture<Integer> h = m.thenCombine(f, g, r);
1267 +
1268 +        checkCompletedWithWrappedCFException(h, ex);
1269 +        checkCompletedWithWrappedCFException(g, ex);
1270 +        assertEquals(0, r.invocationCount);
1271 +        checkCompletedNormally(f, v1);
1272 +    }}
1273 +
1274 +    public void testThenCombine_exceptionalCompletion4() {
1275 +        for (ExecutionMode m : ExecutionMode.values())
1276 +        for (Integer v1 : new Integer[] { 1, null })
1277 +    {
1278 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1279 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1280 +        final SubtractFunction r = new SubtractFunction();
1281 +        final CFException ex = new CFException();
1282 +
1283 +        f.completeExceptionally(ex);
1284 +        g.complete(v1);
1285 +        final CompletableFuture<Integer> h = m.thenCombine(f, g, r);
1286 +
1287 +        checkCompletedWithWrappedCFException(h, ex);
1288 +        checkCompletedWithWrappedCFException(f, ex);
1289 +        assertEquals(0, r.invocationCount);
1290 +        checkCompletedNormally(g, v1);
1291 +    }}
1292 +
1293 +    /**
1294 +     * thenCombine result completes exceptionally if action does
1295 +     */
1296 +    public void testThenCombine_actionFailed1() {
1297 +        for (ExecutionMode m : ExecutionMode.values())
1298 +        for (Integer v1 : new Integer[] { 1, null })
1299 +        for (Integer v2 : new Integer[] { 2, null })
1300 +    {
1301 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1302 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1303 +        final FailingBiFunction r = new FailingBiFunction();
1304 +        final CompletableFuture<Integer> h = m.thenCombine(f, g, r);
1305 +
1306 +        f.complete(v1);
1307 +        checkIncomplete(h);
1308 +        g.complete(v2);
1309 +
1310 +        checkCompletedWithWrappedCFException(h);
1311 +        checkCompletedNormally(f, v1);
1312 +        checkCompletedNormally(g, v2);
1313 +    }}
1314 +
1315 +    public void testThenCombine_actionFailed2() {
1316 +        for (ExecutionMode m : ExecutionMode.values())
1317 +        for (Integer v1 : new Integer[] { 1, null })
1318 +        for (Integer v2 : new Integer[] { 2, null })
1319 +    {
1320 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1321 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1322 +        final FailingBiFunction r = new FailingBiFunction();
1323 +        final CompletableFuture<Integer> h = m.thenCombine(f, g, r);
1324 +
1325 +        g.complete(v2);
1326 +        checkIncomplete(h);
1327 +        f.complete(v1);
1328 +
1329 +        checkCompletedWithWrappedCFException(h);
1330 +        checkCompletedNormally(f, v1);
1331 +        checkCompletedNormally(g, v2);
1332 +    }}
1333 +
1334 +    /**
1335 +     * thenCombine result completes exceptionally if either source cancelled
1336 +     */
1337 +    public void testThenCombine_sourceCancelled1() {
1338 +        for (ExecutionMode m : ExecutionMode.values())
1339 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1340 +        for (Integer v1 : new Integer[] { 1, null })
1341 +    {
1342 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1343 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1344 +        final SubtractFunction r = new SubtractFunction();
1345 +        final CompletableFuture<Integer> h = m.thenCombine(f, g, r);
1346 +
1347 +        assertTrue(f.cancel(mayInterruptIfRunning));
1348 +        checkIncomplete(h);
1349 +        g.complete(v1);
1350 +
1351 +        checkCompletedWithWrappedCancellationException(h);
1352 +        checkCancelled(f);
1353 +        assertEquals(0, r.invocationCount);
1354 +        checkCompletedNormally(g, v1);
1355 +    }}
1356 +
1357 +    public void testThenCombine_sourceCancelled2() {
1358 +        for (ExecutionMode m : ExecutionMode.values())
1359 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1360 +        for (Integer v1 : new Integer[] { 1, null })
1361 +    {
1362 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1363 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1364 +        final SubtractFunction r = new SubtractFunction();
1365 +        final CompletableFuture<Integer> h = m.thenCombine(f, g, r);
1366 +
1367 +        assertTrue(g.cancel(mayInterruptIfRunning));
1368 +        checkIncomplete(h);
1369 +        f.complete(v1);
1370 +
1371 +        checkCompletedWithWrappedCancellationException(h);
1372 +        checkCancelled(g);
1373 +        assertEquals(0, r.invocationCount);
1374 +        checkCompletedNormally(f, v1);
1375 +    }}
1376 +
1377 +    public void testThenCombine_sourceCancelled3() {
1378 +        for (ExecutionMode m : ExecutionMode.values())
1379 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1380 +        for (Integer v1 : new Integer[] { 1, null })
1381 +    {
1382 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1383 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1384 +        final SubtractFunction r = new SubtractFunction();
1385 +
1386 +        assertTrue(g.cancel(mayInterruptIfRunning));
1387 +        f.complete(v1);
1388 +        final CompletableFuture<Integer> h = m.thenCombine(f, g, r);
1389 +
1390 +        checkCompletedWithWrappedCancellationException(h);
1391 +        checkCancelled(g);
1392 +        assertEquals(0, r.invocationCount);
1393 +        checkCompletedNormally(f, v1);
1394 +    }}
1395 +
1396 +    public void testThenCombine_sourceCancelled4() {
1397 +        for (ExecutionMode m : ExecutionMode.values())
1398 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1399 +        for (Integer v1 : new Integer[] { 1, null })
1400 +    {
1401 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1402 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1403 +        final SubtractFunction r = new SubtractFunction();
1404 +
1405 +        assertTrue(f.cancel(mayInterruptIfRunning));
1406 +        g.complete(v1);
1407 +        final CompletableFuture<Integer> h = m.thenCombine(f, g, r);
1408 +
1409 +        checkCompletedWithWrappedCancellationException(h);
1410 +        checkCancelled(f);
1411 +        assertEquals(0, r.invocationCount);
1412 +        checkCompletedNormally(g, v1);
1413 +    }}
1414 +
1415 +    /**
1416 +     * thenAcceptBoth result completes normally after normal
1417 +     * completion of sources
1418 +     */
1419 +    public void testThenAcceptBoth_normalCompletion1() {
1420 +        for (ExecutionMode m : ExecutionMode.values())
1421 +        for (Integer v1 : new Integer[] { 1, null })
1422 +        for (Integer v2 : new Integer[] { 2, null })
1423 +    {
1424 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1425 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1426 +        final SubtractAction r = new SubtractAction();
1427 +        final CompletableFuture<Void> h = m.thenAcceptBoth(f, g, r);
1428 +
1429 +        f.complete(v1);
1430 +        checkIncomplete(h);
1431 +        assertEquals(0, r.invocationCount);
1432 +        g.complete(v2);
1433 +
1434 +        checkCompletedNormally(h, null);
1435 +        assertEquals(subtract(v1, v2), r.value);
1436 +        checkCompletedNormally(f, v1);
1437 +        checkCompletedNormally(g, v2);
1438 +    }}
1439 +
1440 +    public void testThenAcceptBoth_normalCompletion2() {
1441 +        for (ExecutionMode m : ExecutionMode.values())
1442 +        for (Integer v1 : new Integer[] { 1, null })
1443 +        for (Integer v2 : new Integer[] { 2, null })
1444 +    {
1445 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1446 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1447 +        final SubtractAction r = new SubtractAction();
1448 +        final CompletableFuture<Void> h = m.thenAcceptBoth(f, g, r);
1449 +
1450 +        g.complete(v2);
1451 +        checkIncomplete(h);
1452 +        assertEquals(0, r.invocationCount);
1453 +        f.complete(v1);
1454 +
1455 +        checkCompletedNormally(h, null);
1456 +        assertEquals(subtract(v1, v2), r.value);
1457 +        checkCompletedNormally(f, v1);
1458 +        checkCompletedNormally(g, v2);
1459 +    }}
1460 +
1461 +    public void testThenAcceptBoth_normalCompletion3() {
1462 +        for (ExecutionMode m : ExecutionMode.values())
1463 +        for (Integer v1 : new Integer[] { 1, null })
1464 +        for (Integer v2 : new Integer[] { 2, null })
1465 +    {
1466 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1467 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1468 +        final SubtractAction r = new SubtractAction();
1469 +
1470 +        g.complete(v2);
1471 +        f.complete(v1);
1472 +        final CompletableFuture<Void> h = m.thenAcceptBoth(f, g, r);
1473 +
1474 +        checkCompletedNormally(h, null);
1475 +        assertEquals(subtract(v1, v2), r.value);
1476 +        checkCompletedNormally(f, v1);
1477 +        checkCompletedNormally(g, v2);
1478 +    }}
1479 +
1480 +    public void testThenAcceptBoth_normalCompletion4() {
1481 +        for (ExecutionMode m : ExecutionMode.values())
1482 +        for (Integer v1 : new Integer[] { 1, null })
1483 +        for (Integer v2 : new Integer[] { 2, null })
1484 +    {
1485 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1486 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1487 +        final SubtractAction r = new SubtractAction();
1488 +
1489 +        f.complete(v1);
1490 +        g.complete(v2);
1491 +        final CompletableFuture<Void> h = m.thenAcceptBoth(f, g, r);
1492 +
1493 +        checkCompletedNormally(h, null);
1494 +        assertEquals(subtract(v1, v2), r.value);
1495 +        checkCompletedNormally(f, v1);
1496 +        checkCompletedNormally(g, v2);
1497 +    }}
1498 +
1499 +    /**
1500 +     * thenAcceptBoth result completes exceptionally after exceptional
1501 +     * completion of either source
1502 +     */
1503 +    public void testThenAcceptBoth_exceptionalCompletion1() {
1504 +        for (ExecutionMode m : ExecutionMode.values())
1505 +        for (Integer v1 : new Integer[] { 1, null })
1506 +    {
1507 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1508 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1509 +        final SubtractAction r = new SubtractAction();
1510 +        final CompletableFuture<Void> h = m.thenAcceptBoth(f, g, r);
1511 +        final CFException ex = new CFException();
1512 +
1513 +        f.completeExceptionally(ex);
1514 +        checkIncomplete(h);
1515 +        g.complete(v1);
1516 +
1517 +        checkCompletedWithWrappedCFException(h, ex);
1518 +        checkCompletedWithWrappedCFException(f, ex);
1519 +        assertEquals(0, r.invocationCount);
1520 +        checkCompletedNormally(g, v1);
1521 +    }}
1522 +
1523 +    public void testThenAcceptBoth_exceptionalCompletion2() {
1524 +        for (ExecutionMode m : ExecutionMode.values())
1525 +        for (Integer v1 : new Integer[] { 1, null })
1526 +    {
1527 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1528 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1529 +        final SubtractAction r = new SubtractAction();
1530 +        final CompletableFuture<Void> h = m.thenAcceptBoth(f, g, r);
1531 +        final CFException ex = new CFException();
1532 +
1533 +        g.completeExceptionally(ex);
1534 +        checkIncomplete(h);
1535 +        f.complete(v1);
1536 +
1537 +        checkCompletedWithWrappedCFException(h, ex);
1538 +        checkCompletedWithWrappedCFException(g, ex);
1539 +        assertEquals(0, r.invocationCount);
1540 +        checkCompletedNormally(f, v1);
1541 +    }}
1542 +
1543 +    public void testThenAcceptBoth_exceptionalCompletion3() {
1544 +        for (ExecutionMode m : ExecutionMode.values())
1545 +        for (Integer v1 : new Integer[] { 1, null })
1546 +    {
1547 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1548 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1549 +        final SubtractAction r = new SubtractAction();
1550 +        final CFException ex = new CFException();
1551 +
1552 +        g.completeExceptionally(ex);
1553 +        f.complete(v1);
1554 +        final CompletableFuture<Void> h = m.thenAcceptBoth(f, g, r);
1555 +
1556 +        checkCompletedWithWrappedCFException(h, ex);
1557 +        checkCompletedWithWrappedCFException(g, ex);
1558 +        assertEquals(0, r.invocationCount);
1559 +        checkCompletedNormally(f, v1);
1560 +    }}
1561 +
1562 +    public void testThenAcceptBoth_exceptionalCompletion4() {
1563 +        for (ExecutionMode m : ExecutionMode.values())
1564 +        for (Integer v1 : new Integer[] { 1, null })
1565 +    {
1566 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1567 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1568 +        final SubtractAction r = new SubtractAction();
1569 +        final CFException ex = new CFException();
1570 +
1571 +        f.completeExceptionally(ex);
1572 +        g.complete(v1);
1573 +        final CompletableFuture<Void> h = m.thenAcceptBoth(f, g, r);
1574 +
1575 +        checkCompletedWithWrappedCFException(h, ex);
1576 +        checkCompletedWithWrappedCFException(f, ex);
1577 +        assertEquals(0, r.invocationCount);
1578 +        checkCompletedNormally(g, v1);
1579 +    }}
1580 +
1581 +    /**
1582 +     * thenAcceptBoth result completes exceptionally if action does
1583 +     */
1584 +    public void testThenAcceptBoth_actionFailed1() {
1585 +        for (ExecutionMode m : ExecutionMode.values())
1586 +        for (Integer v1 : new Integer[] { 1, null })
1587 +        for (Integer v2 : new Integer[] { 2, null })
1588 +    {
1589 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1590 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1591 +        final FailingBiConsumer r = new FailingBiConsumer();
1592 +        final CompletableFuture<Void> h = m.thenAcceptBoth(f, g, r);
1593 +
1594 +        f.complete(v1);
1595 +        checkIncomplete(h);
1596 +        g.complete(v2);
1597 +
1598 +        checkCompletedWithWrappedCFException(h);
1599 +        checkCompletedNormally(f, v1);
1600 +        checkCompletedNormally(g, v2);
1601 +    }}
1602 +
1603 +    public void testThenAcceptBoth_actionFailed2() {
1604 +        for (ExecutionMode m : ExecutionMode.values())
1605 +        for (Integer v1 : new Integer[] { 1, null })
1606 +        for (Integer v2 : new Integer[] { 2, null })
1607 +    {
1608 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1609 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1610 +        final FailingBiConsumer r = new FailingBiConsumer();
1611 +        final CompletableFuture<Void> h = m.thenAcceptBoth(f, g, r);
1612 +
1613 +        g.complete(v2);
1614 +        checkIncomplete(h);
1615 +        f.complete(v1);
1616 +
1617 +        checkCompletedWithWrappedCFException(h);
1618 +        checkCompletedNormally(f, v1);
1619 +        checkCompletedNormally(g, v2);
1620 +    }}
1621 +
1622 +    /**
1623 +     * thenAcceptBoth result completes exceptionally if either source cancelled
1624 +     */
1625 +    public void testThenAcceptBoth_sourceCancelled1() {
1626 +        for (ExecutionMode m : ExecutionMode.values())
1627 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1628 +        for (Integer v1 : new Integer[] { 1, null })
1629 +    {
1630 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1631 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1632 +        final SubtractAction r = new SubtractAction();
1633 +        final CompletableFuture<Void> h = m.thenAcceptBoth(f, g, r);
1634 +
1635 +        assertTrue(f.cancel(mayInterruptIfRunning));
1636 +        checkIncomplete(h);
1637 +        g.complete(v1);
1638 +
1639 +        checkCompletedWithWrappedCancellationException(h);
1640 +        checkCancelled(f);
1641 +        assertEquals(0, r.invocationCount);
1642 +        checkCompletedNormally(g, v1);
1643 +    }}
1644 +
1645 +    public void testThenAcceptBoth_sourceCancelled2() {
1646 +        for (ExecutionMode m : ExecutionMode.values())
1647 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1648 +        for (Integer v1 : new Integer[] { 1, null })
1649 +    {
1650 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1651 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1652 +        final SubtractAction r = new SubtractAction();
1653 +        final CompletableFuture<Void> h = m.thenAcceptBoth(f, g, r);
1654 +
1655 +        assertTrue(g.cancel(mayInterruptIfRunning));
1656 +        checkIncomplete(h);
1657 +        f.complete(v1);
1658 +
1659 +        checkCompletedWithWrappedCancellationException(h);
1660 +        checkCancelled(g);
1661 +        assertEquals(0, r.invocationCount);
1662 +        checkCompletedNormally(f, v1);
1663 +    }}
1664 +
1665 +    public void testThenAcceptBoth_sourceCancelled3() {
1666 +        for (ExecutionMode m : ExecutionMode.values())
1667 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1668 +        for (Integer v1 : new Integer[] { 1, null })
1669 +    {
1670 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1671 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1672 +        final SubtractAction r = new SubtractAction();
1673 +
1674 +        assertTrue(g.cancel(mayInterruptIfRunning));
1675 +        f.complete(v1);
1676 +        final CompletableFuture<Void> h = m.thenAcceptBoth(f, g, r);
1677 +
1678 +        checkCompletedWithWrappedCancellationException(h);
1679 +        checkCancelled(g);
1680 +        assertEquals(0, r.invocationCount);
1681 +        checkCompletedNormally(f, v1);
1682 +    }}
1683 +
1684 +    public void testThenAcceptBoth_sourceCancelled4() {
1685 +        for (ExecutionMode m : ExecutionMode.values())
1686 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1687 +        for (Integer v1 : new Integer[] { 1, null })
1688 +    {
1689 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1690 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1691 +        final SubtractAction r = new SubtractAction();
1692 +
1693 +        assertTrue(f.cancel(mayInterruptIfRunning));
1694 +        g.complete(v1);
1695 +        final CompletableFuture<Void> h = m.thenAcceptBoth(f, g, r);
1696 +
1697 +        checkCompletedWithWrappedCancellationException(h);
1698 +        checkCancelled(f);
1699 +        assertEquals(0, r.invocationCount);
1700 +        checkCompletedNormally(g, v1);
1701 +    }}
1702 +
1703 +    /**
1704 +     * runAfterBoth result completes normally after normal
1705 +     * completion of sources
1706 +     */
1707 +    public void testRunAfterBoth_normalCompletion1() {
1708 +        for (ExecutionMode m : ExecutionMode.values())
1709 +        for (Integer v1 : new Integer[] { 1, null })
1710 +        for (Integer v2 : new Integer[] { 2, null })
1711 +    {
1712 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1713 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1714 +        final Noop r = new Noop();
1715 +        final CompletableFuture<Void> h = m.runAfterBoth(f, g, r);
1716 +
1717 +        f.complete(v1);
1718 +        checkIncomplete(h);
1719 +        assertEquals(0, r.invocationCount);
1720 +        g.complete(v2);
1721 +
1722 +        checkCompletedNormally(h, null);
1723 +        assertEquals(1, r.invocationCount);
1724 +        checkCompletedNormally(f, v1);
1725 +        checkCompletedNormally(g, v2);
1726 +    }}
1727 +
1728 +    public void testRunAfterBoth_normalCompletion2() {
1729 +        for (ExecutionMode m : ExecutionMode.values())
1730 +        for (Integer v1 : new Integer[] { 1, null })
1731 +        for (Integer v2 : new Integer[] { 2, null })
1732 +    {
1733 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1734 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1735 +        final Noop r = new Noop();
1736 +        final CompletableFuture<Void> h = m.runAfterBoth(f, g, r);
1737 +
1738 +        g.complete(v2);
1739 +        checkIncomplete(h);
1740 +        assertEquals(0, r.invocationCount);
1741 +        f.complete(v1);
1742 +
1743 +        checkCompletedNormally(h, null);
1744 +        assertEquals(1, r.invocationCount);
1745 +        checkCompletedNormally(f, v1);
1746 +        checkCompletedNormally(g, v2);
1747 +    }}
1748 +
1749 +    public void testRunAfterBoth_normalCompletion3() {
1750 +        for (ExecutionMode m : ExecutionMode.values())
1751 +        for (Integer v1 : new Integer[] { 1, null })
1752 +        for (Integer v2 : new Integer[] { 2, null })
1753 +    {
1754 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1755 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1756 +        final Noop r = new Noop();
1757 +
1758 +        g.complete(v2);
1759 +        f.complete(v1);
1760 +        final CompletableFuture<Void> h = m.runAfterBoth(f, g, r);
1761 +
1762 +        checkCompletedNormally(h, null);
1763 +        assertEquals(1, r.invocationCount);
1764 +        checkCompletedNormally(f, v1);
1765 +        checkCompletedNormally(g, v2);
1766 +    }}
1767 +
1768 +    public void testRunAfterBoth_normalCompletion4() {
1769 +        for (ExecutionMode m : ExecutionMode.values())
1770 +        for (Integer v1 : new Integer[] { 1, null })
1771 +        for (Integer v2 : new Integer[] { 2, null })
1772 +    {
1773 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1774 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1775 +        final Noop r = new Noop();
1776 +
1777 +        f.complete(v1);
1778 +        g.complete(v2);
1779 +        final CompletableFuture<Void> h = m.runAfterBoth(f, g, r);
1780 +
1781 +        checkCompletedNormally(h, null);
1782 +        assertEquals(1, r.invocationCount);
1783 +        checkCompletedNormally(f, v1);
1784 +        checkCompletedNormally(g, v2);
1785 +    }}
1786 +
1787 +    /**
1788 +     * runAfterBoth result completes exceptionally after exceptional
1789 +     * completion of either source
1790 +     */
1791 +    public void testRunAfterBoth_exceptionalCompletion1() {
1792 +        for (ExecutionMode m : ExecutionMode.values())
1793 +        for (Integer v1 : new Integer[] { 1, null })
1794 +    {
1795 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1796 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1797 +        final Noop r = new Noop();
1798 +        final CompletableFuture<Void> h = m.runAfterBoth(f, g, r);
1799 +        final CFException ex = new CFException();
1800 +
1801 +        f.completeExceptionally(ex);
1802 +        checkIncomplete(h);
1803 +        g.complete(v1);
1804 +
1805 +        checkCompletedWithWrappedCFException(h, ex);
1806 +        checkCompletedWithWrappedCFException(f, ex);
1807 +        assertEquals(0, r.invocationCount);
1808 +        checkCompletedNormally(g, v1);
1809 +    }}
1810 +
1811 +    public void testRunAfterBoth_exceptionalCompletion2() {
1812 +        for (ExecutionMode m : ExecutionMode.values())
1813 +        for (Integer v1 : new Integer[] { 1, null })
1814 +    {
1815 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1816 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1817 +        final Noop r = new Noop();
1818 +        final CompletableFuture<Void> h = m.runAfterBoth(f, g, r);
1819 +        final CFException ex = new CFException();
1820 +
1821 +        g.completeExceptionally(ex);
1822 +        checkIncomplete(h);
1823 +        f.complete(v1);
1824 +
1825 +        checkCompletedWithWrappedCFException(h, ex);
1826 +        checkCompletedWithWrappedCFException(g, ex);
1827 +        assertEquals(0, r.invocationCount);
1828 +        checkCompletedNormally(f, v1);
1829 +    }}
1830 +
1831 +    public void testRunAfterBoth_exceptionalCompletion3() {
1832 +        for (ExecutionMode m : ExecutionMode.values())
1833 +        for (Integer v1 : new Integer[] { 1, null })
1834 +    {
1835 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1836 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1837 +        final Noop r = new Noop();
1838 +        final CFException ex = new CFException();
1839 +
1840 +        g.completeExceptionally(ex);
1841 +        f.complete(v1);
1842 +        final CompletableFuture<Void> h = m.runAfterBoth(f, g, r);
1843 +
1844 +        checkCompletedWithWrappedCFException(h, ex);
1845 +        checkCompletedWithWrappedCFException(g, ex);
1846 +        assertEquals(0, r.invocationCount);
1847 +        checkCompletedNormally(f, v1);
1848 +    }}
1849 +
1850 +    public void testRunAfterBoth_exceptionalCompletion4() {
1851 +        for (ExecutionMode m : ExecutionMode.values())
1852 +        for (Integer v1 : new Integer[] { 1, null })
1853 +    {
1854 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1855 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1856 +        final Noop r = new Noop();
1857 +        final CFException ex = new CFException();
1858 +
1859 +        f.completeExceptionally(ex);
1860 +        g.complete(v1);
1861 +        final CompletableFuture<Void> h = m.runAfterBoth(f, g, r);
1862 +
1863 +        checkCompletedWithWrappedCFException(h, ex);
1864 +        checkCompletedWithWrappedCFException(f, ex);
1865 +        assertEquals(0, r.invocationCount);
1866 +        checkCompletedNormally(g, v1);
1867 +    }}
1868 +
1869 +    /**
1870 +     * runAfterBoth result completes exceptionally if action does
1871 +     */
1872 +    public void testRunAfterBoth_actionFailed1() {
1873 +        for (ExecutionMode m : ExecutionMode.values())
1874 +        for (Integer v1 : new Integer[] { 1, null })
1875 +        for (Integer v2 : new Integer[] { 2, null })
1876 +    {
1877 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1878 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1879 +        final FailingNoop r = new FailingNoop();
1880 +        final CompletableFuture<Void> h = m.runAfterBoth(f, g, r);
1881 +
1882 +        f.complete(v1);
1883 +        checkIncomplete(h);
1884 +        g.complete(v2);
1885 +
1886 +        checkCompletedWithWrappedCFException(h);
1887 +        checkCompletedNormally(f, v1);
1888 +        checkCompletedNormally(g, v2);
1889 +    }}
1890 +
1891 +    public void testRunAfterBoth_actionFailed2() {
1892 +        for (ExecutionMode m : ExecutionMode.values())
1893 +        for (Integer v1 : new Integer[] { 1, null })
1894 +        for (Integer v2 : new Integer[] { 2, null })
1895 +    {
1896 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1897 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1898 +        final FailingNoop r = new FailingNoop();
1899 +        final CompletableFuture<Void> h = m.runAfterBoth(f, g, r);
1900 +
1901 +        g.complete(v2);
1902 +        checkIncomplete(h);
1903 +        f.complete(v1);
1904 +
1905 +        checkCompletedWithWrappedCFException(h);
1906 +        checkCompletedNormally(f, v1);
1907 +        checkCompletedNormally(g, v2);
1908 +    }}
1909 +
1910 +    /**
1911 +     * runAfterBoth result completes exceptionally if either source cancelled
1912 +     */
1913 +    public void testRunAfterBoth_sourceCancelled1() {
1914 +        for (ExecutionMode m : ExecutionMode.values())
1915 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1916 +        for (Integer v1 : new Integer[] { 1, null })
1917 +    {
1918 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1919 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1920 +        final Noop r = new Noop();
1921 +        final CompletableFuture<Void> h = m.runAfterBoth(f, g, r);
1922 +
1923 +        assertTrue(f.cancel(mayInterruptIfRunning));
1924 +        checkIncomplete(h);
1925 +        g.complete(v1);
1926 +
1927 +        checkCompletedWithWrappedCancellationException(h);
1928 +        checkCancelled(f);
1929 +        assertEquals(0, r.invocationCount);
1930 +        checkCompletedNormally(g, v1);
1931 +    }}
1932 +
1933 +    public void testRunAfterBoth_sourceCancelled2() {
1934 +        for (ExecutionMode m : ExecutionMode.values())
1935 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1936 +        for (Integer v1 : new Integer[] { 1, null })
1937 +    {
1938 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1939 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1940 +        final Noop r = new Noop();
1941 +        final CompletableFuture<Void> h = m.runAfterBoth(f, g, r);
1942 +
1943 +        assertTrue(g.cancel(mayInterruptIfRunning));
1944 +        checkIncomplete(h);
1945 +        f.complete(v1);
1946 +
1947 +        checkCompletedWithWrappedCancellationException(h);
1948 +        checkCancelled(g);
1949 +        assertEquals(0, r.invocationCount);
1950 +        checkCompletedNormally(f, v1);
1951 +    }}
1952 +
1953 +    public void testRunAfterBoth_sourceCancelled3() {
1954 +        for (ExecutionMode m : ExecutionMode.values())
1955 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1956 +        for (Integer v1 : new Integer[] { 1, null })
1957 +    {
1958 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1959 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1960 +        final Noop r = new Noop();
1961 +
1962 +        assertTrue(g.cancel(mayInterruptIfRunning));
1963 +        f.complete(v1);
1964 +        final CompletableFuture<Void> h = m.runAfterBoth(f, g, r);
1965 +
1966 +        checkCompletedWithWrappedCancellationException(h);
1967 +        checkCancelled(g);
1968 +        assertEquals(0, r.invocationCount);
1969 +        checkCompletedNormally(f, v1);
1970 +    }}
1971 +
1972 +    public void testRunAfterBoth_sourceCancelled4() {
1973 +        for (ExecutionMode m : ExecutionMode.values())
1974 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1975 +        for (Integer v1 : new Integer[] { 1, null })
1976 +    {
1977 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1978 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1979 +        final Noop r = new Noop();
1980 +
1981 +        assertTrue(f.cancel(mayInterruptIfRunning));
1982 +        g.complete(v1);
1983 +        final CompletableFuture<Void> h = m.runAfterBoth(f, g, r);
1984 +
1985 +        checkCompletedWithWrappedCancellationException(h);
1986 +        checkCancelled(f);
1987 +        assertEquals(0, r.invocationCount);
1988 +        checkCompletedNormally(g, v1);
1989 +    }}
1990 +
1991 +    /**
1992 +     * applyToEither result completes normally after normal completion
1993 +     * of either source
1994 +     */
1995 +    public void testApplyToEither_normalCompletion1() {
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 +        final CompletableFuture<Integer> h = m.applyToEither(f, g, r);
2004 +
2005 +        f.complete(v1);
2006 +        checkCompletedNormally(h, inc(v1));
2007 +        g.complete(v2);
2008 +
2009 +        checkCompletedNormally(f, v1);
2010 +        checkCompletedNormally(g, v2);
2011 +        checkCompletedNormally(h, inc(v1));
2012 +    }}
2013 +
2014 +    public void testApplyToEither_normalCompletion2() {
2015 +        for (ExecutionMode m : ExecutionMode.values())
2016 +        for (Integer v1 : new Integer[] { 1, null })
2017 +        for (Integer v2 : new Integer[] { 2, null })
2018 +    {
2019 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2020 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2021 +        final IncFunction r = new IncFunction();
2022 +        final CompletableFuture<Integer> h = m.applyToEither(f, g, r);
2023 +
2024 +        g.complete(v2);
2025 +        checkCompletedNormally(h, inc(v2));
2026 +        f.complete(v1);
2027 +
2028 +        checkCompletedNormally(f, v1);
2029 +        checkCompletedNormally(g, v2);
2030 +        checkCompletedNormally(h, inc(v2));
2031 +        }}
2032 +
2033 +    public void testApplyToEither_normalCompletion3() {
2034 +        for (ExecutionMode m : ExecutionMode.values())
2035 +        for (Integer v1 : new Integer[] { 1, null })
2036 +        for (Integer v2 : new Integer[] { 2, null })
2037 +    {
2038 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2039 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2040 +        final IncFunction r = new IncFunction();
2041 +
2042 +        f.complete(v1);
2043 +        g.complete(v2);
2044 +        final CompletableFuture<Integer> h = m.applyToEither(f, g, r);
2045 +
2046 +        checkCompletedNormally(f, v1);
2047 +        checkCompletedNormally(g, v2);
2048 +
2049 +        // unspecified behavior
2050 +        assertTrue(Objects.equals(h.join(), inc(v1)) ||
2051 +                   Objects.equals(h.join(), inc(v2)));
2052 +        assertEquals(1, r.invocationCount);
2053 +    }}
2054 +
2055 +    /**
2056 +     * applyToEither result completes exceptionally after exceptional
2057 +     * completion of either source
2058 +     */
2059 +    public void testApplyToEither_exceptionalCompletion1() {
2060 +        for (ExecutionMode m : ExecutionMode.values())
2061 +        for (Integer v1 : new Integer[] { 1, null })
2062 +    {
2063 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2064 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2065 +        final IncFunction r = new IncFunction();
2066 +        final CompletableFuture<Integer> h = m.applyToEither(f, g, r);
2067 +        final CFException ex = new CFException();
2068 +
2069 +        f.completeExceptionally(ex);
2070 +        checkCompletedWithWrappedCFException(h, ex);
2071 +        g.complete(v1);
2072 +
2073 +        assertEquals(0, r.invocationCount);
2074 +        checkCompletedNormally(g, v1);
2075 +        checkCompletedWithWrappedCFException(f, ex);
2076 +        checkCompletedWithWrappedCFException(h, ex);
2077 +    }}
2078 +
2079 +    public void testApplyToEither_exceptionalCompletion2() {
2080 +        for (ExecutionMode m : ExecutionMode.values())
2081 +        for (Integer v1 : new Integer[] { 1, null })
2082 +    {
2083 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2084 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2085 +        final IncFunction r = new IncFunction();
2086 +        final CompletableFuture<Integer> h = m.applyToEither(f, g, r);
2087 +        final CFException ex = new CFException();
2088 +
2089 +        g.completeExceptionally(ex);
2090 +        checkCompletedWithWrappedCFException(h, ex);
2091 +        f.complete(v1);
2092 +
2093 +        assertEquals(0, r.invocationCount);
2094 +        checkCompletedNormally(f, v1);
2095 +        checkCompletedWithWrappedCFException(g, ex);
2096 +        checkCompletedWithWrappedCFException(h, ex);
2097 +    }}
2098 +
2099 +    public void testApplyToEither_exceptionalCompletion3() {
2100 +        for (ExecutionMode m : ExecutionMode.values())
2101 +        for (Integer v1 : new Integer[] { 1, null })
2102 +    {
2103 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2104 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2105 +        final IncFunction r = new IncFunction();
2106 +        final CFException ex = new CFException();
2107 +
2108 +        g.completeExceptionally(ex);
2109 +        f.complete(v1);
2110 +        final CompletableFuture<Integer> h = m.applyToEither(f, g, r);
2111 +
2112 +        // unspecified behavior
2113 +        Integer v;
2114 +        try {
2115 +            assertEquals(inc(v1), h.join());
2116 +            assertEquals(1, r.invocationCount);
2117 +        } catch (CompletionException ok) {
2118 +            checkCompletedWithWrappedCFException(h, ex);
2119 +            assertEquals(0, r.invocationCount);
2120 +        }
2121 +
2122 +        checkCompletedWithWrappedCFException(g, ex);
2123 +        checkCompletedNormally(f, v1);
2124 +    }}
2125 +
2126 +    public void testApplyToEither_exceptionalCompletion4() {
2127 +        for (ExecutionMode m : ExecutionMode.values())
2128 +        for (Integer v1 : new Integer[] { 1, null })
2129 +    {
2130 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2131 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2132 +        final IncFunction r = new IncFunction();
2133 +        final CFException ex = new CFException();
2134 +
2135 +        f.completeExceptionally(ex);
2136 +        g.complete(v1);
2137 +        final CompletableFuture<Integer> h = m.applyToEither(f, g, r);
2138 +
2139 +        // unspecified behavior
2140 +        Integer v;
2141 +        try {
2142 +            assertEquals(inc(v1), h.join());
2143 +            assertEquals(1, r.invocationCount);
2144 +        } catch (CompletionException ok) {
2145 +            checkCompletedWithWrappedCFException(h, ex);
2146 +            assertEquals(0, r.invocationCount);
2147 +        }
2148 +
2149 +        checkCompletedWithWrappedCFException(f, ex);
2150 +        checkCompletedNormally(g, v1);
2151 +    }}
2152 +
2153 +    /**
2154 +     * applyToEither result completes exceptionally if action does
2155 +     */
2156 +    public void testApplyToEither_actionFailed1() {
2157 +        for (ExecutionMode m : ExecutionMode.values())
2158 +        for (Integer v1 : new Integer[] { 1, null })
2159 +        for (Integer v2 : new Integer[] { 2, null })
2160 +    {
2161 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2162 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2163 +        final FailingFunction r = new FailingFunction();
2164 +        final CompletableFuture<Integer> h = m.applyToEither(f, g, r);
2165 +
2166 +        f.complete(v1);
2167 +        checkCompletedWithWrappedCFException(h);
2168 +        g.complete(v2);
2169 +        checkCompletedNormally(f, v1);
2170 +        checkCompletedNormally(g, v2);
2171 +    }}
2172 +
2173 +    public void testApplyToEither_actionFailed2() {
2174 +        for (ExecutionMode m : ExecutionMode.values())
2175 +        for (Integer v1 : new Integer[] { 1, null })
2176 +        for (Integer v2 : new Integer[] { 2, null })
2177 +    {
2178 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2179 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2180 +        final FailingFunction r = new FailingFunction();
2181 +        final CompletableFuture<Integer> h = m.applyToEither(f, g, r);
2182 +
2183 +        g.complete(v2);
2184 +        checkCompletedWithWrappedCFException(h);
2185 +        f.complete(v1);
2186 +        checkCompletedNormally(f, v1);
2187 +        checkCompletedNormally(g, v2);
2188 +    }}
2189 +
2190 +    /**
2191 +     * applyToEither result completes exceptionally if either source cancelled
2192 +     */
2193 +    public void testApplyToEither_sourceCancelled1() {
2194 +        for (ExecutionMode m : ExecutionMode.values())
2195 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2196 +        for (Integer v1 : new Integer[] { 1, null })
2197 +    {
2198 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2199 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2200 +        final IncFunction r = new IncFunction();
2201 +        final CompletableFuture<Integer> h = m.applyToEither(f, g, r);
2202 +
2203 +        assertTrue(f.cancel(mayInterruptIfRunning));
2204 +        checkCompletedWithWrappedCancellationException(h);
2205 +        g.complete(v1);
2206 +
2207 +        checkCancelled(f);
2208 +        assertEquals(0, r.invocationCount);
2209 +        checkCompletedNormally(g, v1);
2210 +        checkCompletedWithWrappedCancellationException(h);
2211 +    }}
2212 +
2213 +    public void testApplyToEither_sourceCancelled2() {
2214 +        for (ExecutionMode m : ExecutionMode.values())
2215 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2216 +        for (Integer v1 : new Integer[] { 1, null })
2217 +    {
2218 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2219 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2220 +        final IncFunction r = new IncFunction();
2221 +        final CompletableFuture<Integer> h = m.applyToEither(f, g, r);
2222 +
2223 +        assertTrue(g.cancel(mayInterruptIfRunning));
2224 +        checkCompletedWithWrappedCancellationException(h);
2225 +        f.complete(v1);
2226 +
2227 +        checkCancelled(g);
2228 +        assertEquals(0, r.invocationCount);
2229 +        checkCompletedNormally(f, v1);
2230 +        checkCompletedWithWrappedCancellationException(h);
2231 +    }}
2232 +
2233 +    public void testApplyToEither_sourceCancelled3() {
2234 +        for (ExecutionMode m : ExecutionMode.values())
2235 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2236 +        for (Integer v1 : new Integer[] { 1, null })
2237 +    {
2238 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2239 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2240 +        final IncFunction r = new IncFunction();
2241 +
2242 +        assertTrue(g.cancel(mayInterruptIfRunning));
2243 +        f.complete(v1);
2244 +        final CompletableFuture<Integer> h = m.applyToEither(f, g, r);
2245 +
2246 +        // unspecified behavior
2247 +        Integer v;
2248 +        try {
2249 +            assertEquals(inc(v1), h.join());
2250 +            assertEquals(1, r.invocationCount);
2251 +        } catch (CompletionException ok) {
2252 +            checkCompletedWithWrappedCancellationException(h);
2253 +            assertEquals(0, r.invocationCount);
2254 +        }
2255 +
2256 +        checkCancelled(g);
2257 +        checkCompletedNormally(f, v1);
2258 +    }}
2259 +
2260 +    public void testApplyToEither_sourceCancelled4() {
2261 +        for (ExecutionMode m : ExecutionMode.values())
2262 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2263 +        for (Integer v1 : new Integer[] { 1, null })
2264 +    {
2265 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2266 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2267 +        final IncFunction r = new IncFunction();
2268 +
2269 +        assertTrue(f.cancel(mayInterruptIfRunning));
2270 +        g.complete(v1);
2271 +        final CompletableFuture<Integer> h = m.applyToEither(f, g, r);
2272 +
2273 +        // unspecified behavior
2274 +        Integer v;
2275 +        try {
2276 +            assertEquals(inc(v1), h.join());
2277 +            assertEquals(1, r.invocationCount);
2278 +        } catch (CompletionException ok) {
2279 +            checkCompletedWithWrappedCancellationException(h);
2280 +            assertEquals(0, r.invocationCount);
2281 +        }
2282 +
2283 +        checkCancelled(f);
2284 +        checkCompletedNormally(g, v1);
2285 +    }}
2286 +
2287 +    /**
2288 +     * acceptEither result completes normally after normal completion
2289 +     * of either source
2290 +     */
2291 +    public void testAcceptEither_normalCompletion1() {
2292 +        for (ExecutionMode m : ExecutionMode.values())
2293 +        for (Integer v1 : new Integer[] { 1, null })
2294 +        for (Integer v2 : new Integer[] { 2, null })
2295 +    {
2296 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2297 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2298 +        final IncAction r = new IncAction();
2299 +        final CompletableFuture<Void> h = m.acceptEither(f, g, r);
2300 +
2301 +        f.complete(v1);
2302 +        checkCompletedNormally(h, null);
2303 +        assertEquals(inc(v1), r.value);
2304 +        g.complete(v2);
2305 +
2306 +        checkCompletedNormally(f, v1);
2307 +        checkCompletedNormally(g, v2);
2308 +        checkCompletedNormally(h, null);
2309 +    }}
2310 +
2311 +    public void testAcceptEither_normalCompletion2() {
2312 +        for (ExecutionMode m : ExecutionMode.values())
2313 +        for (Integer v1 : new Integer[] { 1, null })
2314 +        for (Integer v2 : new Integer[] { 2, null })
2315 +    {
2316 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2317 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2318 +        final IncAction r = new IncAction();
2319 +        final CompletableFuture<Void> h = m.acceptEither(f, g, r);
2320 +
2321 +        g.complete(v2);
2322 +        checkCompletedNormally(h, null);
2323 +        assertEquals(inc(v2), r.value);
2324 +        f.complete(v1);
2325 +
2326 +        checkCompletedNormally(f, v1);
2327 +        checkCompletedNormally(g, v2);
2328 +        checkCompletedNormally(h, null);
2329 +    }}
2330 +
2331 +    public void testAcceptEither_normalCompletion3() {
2332 +        for (ExecutionMode m : ExecutionMode.values())
2333 +        for (Integer v1 : new Integer[] { 1, null })
2334 +        for (Integer v2 : new Integer[] { 2, null })
2335 +    {
2336 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2337 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2338 +        final IncAction r = new IncAction();
2339 +
2340 +        f.complete(v1);
2341 +        g.complete(v2);
2342 +        final CompletableFuture<Void> h = m.acceptEither(f, g, r);
2343 +
2344 +        checkCompletedNormally(h, null);
2345 +        checkCompletedNormally(f, v1);
2346 +        checkCompletedNormally(g, v2);
2347 +
2348 +        // unspecified behavior
2349 +        assertTrue(Objects.equals(r.value, inc(v1)) ||
2350 +                   Objects.equals(r.value, inc(v2)));
2351 +    }}
2352 +
2353 +    /**
2354 +     * acceptEither result completes exceptionally after exceptional
2355 +     * completion of either source
2356 +     */
2357 +    public void testAcceptEither_exceptionalCompletion1() {
2358 +        for (ExecutionMode m : ExecutionMode.values())
2359 +        for (Integer v1 : new Integer[] { 1, null })
2360 +    {
2361 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2362 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2363 +        final IncAction r = new IncAction();
2364 +        final CompletableFuture<Void> h = m.acceptEither(f, g, r);
2365 +        final CFException ex = new CFException();
2366 +
2367 +        f.completeExceptionally(ex);
2368 +        checkCompletedWithWrappedCFException(h, ex);
2369 +        g.complete(v1);
2370 +
2371 +        assertEquals(0, r.invocationCount);
2372 +        checkCompletedNormally(g, v1);
2373 +        checkCompletedWithWrappedCFException(f, ex);
2374 +        checkCompletedWithWrappedCFException(h, ex);
2375 +    }}
2376 +
2377 +    public void testAcceptEither_exceptionalCompletion2() {
2378 +        for (ExecutionMode m : ExecutionMode.values())
2379 +        for (Integer v1 : new Integer[] { 1, null })
2380 +    {
2381 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2382 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2383 +        final IncAction r = new IncAction();
2384 +        final CompletableFuture<Void> h = m.acceptEither(f, g, r);
2385 +        final CFException ex = new CFException();
2386 +
2387 +        g.completeExceptionally(ex);
2388 +        checkCompletedWithWrappedCFException(h, ex);
2389 +        f.complete(v1);
2390 +
2391 +        assertEquals(0, r.invocationCount);
2392 +        checkCompletedNormally(f, v1);
2393 +        checkCompletedWithWrappedCFException(g, ex);
2394 +        checkCompletedWithWrappedCFException(h, ex);
2395 +    }}
2396 +
2397 +    public void testAcceptEither_exceptionalCompletion3() {
2398 +        for (ExecutionMode m : ExecutionMode.values())
2399 +        for (Integer v1 : new Integer[] { 1, null })
2400 +    {
2401 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2402 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2403 +        final IncAction r = new IncAction();
2404 +        final CFException ex = new CFException();
2405 +
2406 +        g.completeExceptionally(ex);
2407 +        f.complete(v1);
2408 +        final CompletableFuture<Void> h = m.acceptEither(f, g, r);
2409 +
2410 +        // unspecified behavior
2411 +        Integer v;
2412 +        try {
2413 +            assertNull(h.join());
2414 +            assertEquals(1, r.invocationCount);
2415 +            assertEquals(inc(v1), r.value);
2416 +        } catch (CompletionException ok) {
2417 +            checkCompletedWithWrappedCFException(h, ex);
2418 +            assertEquals(0, r.invocationCount);
2419 +        }
2420 +
2421 +        checkCompletedWithWrappedCFException(g, ex);
2422 +        checkCompletedNormally(f, v1);
2423 +    }}
2424 +
2425 +    public void testAcceptEither_exceptionalCompletion4() {
2426 +        for (ExecutionMode m : ExecutionMode.values())
2427 +        for (Integer v1 : new Integer[] { 1, null })
2428 +    {
2429 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2430 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2431 +        final IncAction r = new IncAction();
2432 +        final CFException ex = new CFException();
2433 +
2434 +        f.completeExceptionally(ex);
2435 +        g.complete(v1);
2436 +        final CompletableFuture<Void> h = m.acceptEither(f, g, r);
2437 +
2438 +        // unspecified behavior
2439 +        Integer v;
2440 +        try {
2441 +            assertNull(h.join());
2442 +            assertEquals(1, r.invocationCount);
2443 +            assertEquals(inc(v1), r.value);
2444 +        } catch (CompletionException ok) {
2445 +            checkCompletedWithWrappedCFException(h, ex);
2446 +            assertEquals(0, r.invocationCount);
2447 +        }
2448 +
2449 +        checkCompletedWithWrappedCFException(f, ex);
2450 +        checkCompletedNormally(g, v1);
2451 +    }}
2452 +
2453 +    /**
2454 +     * acceptEither result completes exceptionally if action does
2455 +     */
2456 +    public void testAcceptEither_actionFailed1() {
2457 +        for (ExecutionMode m : ExecutionMode.values())
2458 +        for (Integer v1 : new Integer[] { 1, null })
2459 +        for (Integer v2 : new Integer[] { 2, null })
2460 +    {
2461 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2462 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2463 +        final FailingConsumer r = new FailingConsumer();
2464 +        final CompletableFuture<Void> h = m.acceptEither(f, g, r);
2465 +
2466 +        f.complete(v1);
2467 +        checkCompletedWithWrappedCFException(h);
2468 +        g.complete(v2);
2469 +        checkCompletedNormally(f, v1);
2470 +        checkCompletedNormally(g, v2);
2471 +    }}
2472 +
2473 +    public void testAcceptEither_actionFailed2() {
2474 +        for (ExecutionMode m : ExecutionMode.values())
2475 +        for (Integer v1 : new Integer[] { 1, null })
2476 +        for (Integer v2 : new Integer[] { 2, null })
2477 +    {
2478 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2479 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2480 +        final FailingConsumer r = new FailingConsumer();
2481 +        final CompletableFuture<Void> h = m.acceptEither(f, g, r);
2482 +
2483 +        g.complete(v2);
2484 +        checkCompletedWithWrappedCFException(h);
2485 +        f.complete(v1);
2486 +        checkCompletedNormally(f, v1);
2487 +        checkCompletedNormally(g, v2);
2488 +    }}
2489 +
2490 +    /**
2491 +     * acceptEither result completes exceptionally if either source cancelled
2492 +     */
2493 +    public void testAcceptEither_sourceCancelled1() {
2494 +        for (ExecutionMode m : ExecutionMode.values())
2495 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2496 +        for (Integer v1 : new Integer[] { 1, null })
2497 +    {
2498 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2499 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2500 +        final IncAction r = new IncAction();
2501 +        final CompletableFuture<Void> h = m.acceptEither(f, g, r);
2502 +
2503 +        assertTrue(f.cancel(mayInterruptIfRunning));
2504 +        checkCompletedWithWrappedCancellationException(h);
2505 +        g.complete(v1);
2506 +
2507 +        checkCancelled(f);
2508 +        assertEquals(0, r.invocationCount);
2509 +        checkCompletedNormally(g, v1);
2510 +        checkCompletedWithWrappedCancellationException(h);
2511 +    }}
2512 +
2513 +    public void testAcceptEither_sourceCancelled2() {
2514 +        for (ExecutionMode m : ExecutionMode.values())
2515 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2516 +        for (Integer v1 : new Integer[] { 1, null })
2517 +    {
2518 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2519 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2520 +        final IncAction r = new IncAction();
2521 +        final CompletableFuture<Void> h = m.acceptEither(f, g, r);
2522 +
2523 +        assertTrue(g.cancel(mayInterruptIfRunning));
2524 +        checkCompletedWithWrappedCancellationException(h);
2525 +        f.complete(v1);
2526 +
2527 +        checkCancelled(g);
2528 +        assertEquals(0, r.invocationCount);
2529 +        checkCompletedNormally(f, v1);
2530 +        checkCompletedWithWrappedCancellationException(h);
2531 +    }}
2532 +
2533 +    public void testAcceptEither_sourceCancelled3() {
2534 +        for (ExecutionMode m : ExecutionMode.values())
2535 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2536 +        for (Integer v1 : new Integer[] { 1, null })
2537 +    {
2538 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2539 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2540 +        final IncAction r = new IncAction();
2541 +
2542 +        assertTrue(g.cancel(mayInterruptIfRunning));
2543 +        f.complete(v1);
2544 +        final CompletableFuture<Void> h = m.acceptEither(f, g, r);
2545 +
2546 +        // unspecified behavior
2547 +        Integer v;
2548 +        try {
2549 +            assertNull(h.join());
2550 +            assertEquals(1, r.invocationCount);
2551 +            assertEquals(inc(v1), r.value);
2552 +        } catch (CompletionException ok) {
2553 +            checkCompletedWithWrappedCancellationException(h);
2554 +            assertEquals(0, r.invocationCount);
2555 +        }
2556 +
2557 +        checkCancelled(g);
2558 +        checkCompletedNormally(f, v1);
2559 +    }}
2560 +
2561 +    public void testAcceptEither_sourceCancelled4() {
2562 +        for (ExecutionMode m : ExecutionMode.values())
2563 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2564 +        for (Integer v1 : new Integer[] { 1, null })
2565 +    {
2566 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2567 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2568 +        final IncAction r = new IncAction();
2569 +
2570 +        assertTrue(f.cancel(mayInterruptIfRunning));
2571 +        g.complete(v1);
2572 +        final CompletableFuture<Void> h = m.acceptEither(f, g, r);
2573 +
2574 +        // unspecified behavior
2575 +        Integer v;
2576 +        try {
2577 +            assertNull(h.join());
2578 +            assertEquals(1, r.invocationCount);
2579 +            assertEquals(inc(v1), r.value);
2580 +        } catch (CompletionException ok) {
2581 +            checkCompletedWithWrappedCancellationException(h);
2582 +            assertEquals(0, r.invocationCount);
2583 +        }
2584 +
2585 +        checkCancelled(f);
2586 +        checkCompletedNormally(g, v1);
2587 +    }}
2588 +
2589 +    /**
2590 +     * runAfterEither result completes normally after normal completion
2591 +     * of either source
2592 +     */
2593 +    public void testRunAfterEither_normalCompletion1() {
2594 +        for (ExecutionMode m : ExecutionMode.values())
2595 +        for (Integer v1 : new Integer[] { 1, null })
2596 +        for (Integer v2 : new Integer[] { 2, null })
2597 +    {
2598 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2599 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2600 +        final Noop r = new Noop();
2601 +        final CompletableFuture<Void> h = m.runAfterEither(f, g, r);
2602 +
2603 +        f.complete(v1);
2604 +        checkCompletedNormally(h, null);
2605 +        assertEquals(1, r.invocationCount);
2606 +        g.complete(v2);
2607 +
2608 +        checkCompletedNormally(f, v1);
2609 +        checkCompletedNormally(g, v2);
2610 +        checkCompletedNormally(h, null);
2611 +        assertEquals(1, r.invocationCount);
2612 +    }}
2613 +
2614 +    public void testRunAfterEither_normalCompletion2() {
2615 +        for (ExecutionMode m : ExecutionMode.values())
2616 +        for (Integer v1 : new Integer[] { 1, null })
2617 +        for (Integer v2 : new Integer[] { 2, null })
2618 +    {
2619 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2620 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2621 +        final Noop r = new Noop();
2622 +        final CompletableFuture<Void> h = m.runAfterEither(f, g, r);
2623 +
2624 +        g.complete(v2);
2625 +        checkCompletedNormally(h, null);
2626 +        assertEquals(1, r.invocationCount);
2627 +        f.complete(v1);
2628 +
2629 +        checkCompletedNormally(f, v1);
2630 +        checkCompletedNormally(g, v2);
2631 +        checkCompletedNormally(h, null);
2632 +        assertEquals(1, r.invocationCount);
2633 +        }}
2634 +
2635 +    public void testRunAfterEither_normalCompletion3() {
2636 +        for (ExecutionMode m : ExecutionMode.values())
2637 +        for (Integer v1 : new Integer[] { 1, null })
2638 +        for (Integer v2 : new Integer[] { 2, null })
2639 +    {
2640 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2641 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2642 +        final Noop r = new Noop();
2643 +
2644 +        f.complete(v1);
2645 +        g.complete(v2);
2646 +        final CompletableFuture<Void> h = m.runAfterEither(f, g, r);
2647 +
2648 +        checkCompletedNormally(h, null);
2649 +        checkCompletedNormally(f, v1);
2650 +        checkCompletedNormally(g, v2);
2651 +        assertEquals(1, r.invocationCount);
2652 +    }}
2653 +
2654 +    /**
2655 +     * runAfterEither result completes exceptionally after exceptional
2656 +     * completion of either source
2657 +     */
2658 +    public void testRunAfterEither_exceptionalCompletion1() {
2659 +        for (ExecutionMode m : ExecutionMode.values())
2660 +        for (Integer v1 : new Integer[] { 1, null })
2661 +    {
2662 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2663 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2664 +        final Noop r = new Noop();
2665 +        final CompletableFuture<Void> h = m.runAfterEither(f, g, r);
2666 +        final CFException ex = new CFException();
2667 +
2668 +        f.completeExceptionally(ex);
2669 +        checkCompletedWithWrappedCFException(h, ex);
2670 +        g.complete(v1);
2671 +
2672 +        assertEquals(0, r.invocationCount);
2673 +        checkCompletedNormally(g, v1);
2674 +        checkCompletedWithWrappedCFException(f, ex);
2675 +        checkCompletedWithWrappedCFException(h, ex);
2676 +    }}
2677 +
2678 +    public void testRunAfterEither_exceptionalCompletion2() {
2679 +        for (ExecutionMode m : ExecutionMode.values())
2680 +        for (Integer v1 : new Integer[] { 1, null })
2681 +    {
2682 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2683 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2684 +        final Noop r = new Noop();
2685 +        final CompletableFuture<Void> h = m.runAfterEither(f, g, r);
2686 +        final CFException ex = new CFException();
2687 +
2688 +        g.completeExceptionally(ex);
2689 +        checkCompletedWithWrappedCFException(h, ex);
2690 +        f.complete(v1);
2691 +
2692 +        assertEquals(0, r.invocationCount);
2693 +        checkCompletedNormally(f, v1);
2694 +        checkCompletedWithWrappedCFException(g, ex);
2695 +        checkCompletedWithWrappedCFException(h, ex);
2696 +    }}
2697 +
2698 +    public void testRunAfterEither_exceptionalCompletion3() {
2699 +        for (ExecutionMode m : ExecutionMode.values())
2700 +        for (Integer v1 : new Integer[] { 1, null })
2701 +    {
2702 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2703 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2704 +        final Noop r = new Noop();
2705 +        final CFException ex = new CFException();
2706 +
2707 +        g.completeExceptionally(ex);
2708 +        f.complete(v1);
2709 +        final CompletableFuture<Void> h = m.runAfterEither(f, g, r);
2710 +
2711 +        // unspecified behavior
2712 +        Integer v;
2713 +        try {
2714 +            assertNull(h.join());
2715 +            assertEquals(1, r.invocationCount);
2716 +        } catch (CompletionException ok) {
2717 +            checkCompletedWithWrappedCFException(h, ex);
2718 +            assertEquals(0, r.invocationCount);
2719 +        }
2720 +
2721 +        checkCompletedWithWrappedCFException(g, ex);
2722 +        checkCompletedNormally(f, v1);
2723 +    }}
2724 +
2725 +    public void testRunAfterEither_exceptionalCompletion4() {
2726 +        for (ExecutionMode m : ExecutionMode.values())
2727 +        for (Integer v1 : new Integer[] { 1, null })
2728 +    {
2729 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2730 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2731 +        final Noop r = new Noop();
2732 +        final CFException ex = new CFException();
2733 +
2734 +        f.completeExceptionally(ex);
2735 +        g.complete(v1);
2736 +        final CompletableFuture<Void> h = m.runAfterEither(f, g, r);
2737 +
2738 +        // unspecified behavior
2739 +        Integer v;
2740 +        try {
2741 +            assertNull(h.join());
2742 +            assertEquals(1, r.invocationCount);
2743 +        } catch (CompletionException ok) {
2744 +            checkCompletedWithWrappedCFException(h, ex);
2745 +            assertEquals(0, r.invocationCount);
2746 +        }
2747 +
2748 +        checkCompletedWithWrappedCFException(f, ex);
2749 +        checkCompletedNormally(g, v1);
2750 +    }}
2751 +
2752 +    /**
2753 +     * runAfterEither result completes exceptionally if action does
2754 +     */
2755 +    public void testRunAfterEither_actionFailed1() {
2756 +        for (ExecutionMode m : ExecutionMode.values())
2757 +        for (Integer v1 : new Integer[] { 1, null })
2758 +        for (Integer v2 : new Integer[] { 2, null })
2759 +    {
2760 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2761 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2762 +        final FailingNoop r = new FailingNoop();
2763 +        final CompletableFuture<Void> h = m.runAfterEither(f, g, r);
2764 +
2765 +        f.complete(v1);
2766 +        checkCompletedWithWrappedCFException(h);
2767 +        g.complete(v2);
2768 +        checkCompletedNormally(f, v1);
2769 +        checkCompletedNormally(g, v2);
2770 +    }}
2771 +
2772 +    public void testRunAfterEither_actionFailed2() {
2773 +        for (ExecutionMode m : ExecutionMode.values())
2774 +        for (Integer v1 : new Integer[] { 1, null })
2775 +        for (Integer v2 : new Integer[] { 2, null })
2776 +    {
2777 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2778 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2779 +        final FailingNoop r = new FailingNoop();
2780 +        final CompletableFuture<Void> h = m.runAfterEither(f, g, r);
2781 +
2782 +        g.complete(v2);
2783 +        checkCompletedWithWrappedCFException(h);
2784 +        f.complete(v1);
2785 +        checkCompletedNormally(f, v1);
2786 +        checkCompletedNormally(g, v2);
2787 +    }}
2788 +
2789 +    /**
2790 +     * runAfterEither result completes exceptionally if either source cancelled
2791 +     */
2792 +    public void testRunAfterEither_sourceCancelled1() {
2793 +        for (ExecutionMode m : ExecutionMode.values())
2794 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2795 +        for (Integer v1 : new Integer[] { 1, null })
2796 +    {
2797 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2798 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2799 +        final Noop r = new Noop();
2800 +        final CompletableFuture<Void> h = m.runAfterEither(f, g, r);
2801 +
2802 +        assertTrue(f.cancel(mayInterruptIfRunning));
2803 +        checkCompletedWithWrappedCancellationException(h);
2804 +        g.complete(v1);
2805 +
2806 +        checkCancelled(f);
2807 +        assertEquals(0, r.invocationCount);
2808 +        checkCompletedNormally(g, v1);
2809 +        checkCompletedWithWrappedCancellationException(h);
2810 +    }}
2811 +
2812 +    public void testRunAfterEither_sourceCancelled2() {
2813 +        for (ExecutionMode m : ExecutionMode.values())
2814 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2815 +        for (Integer v1 : new Integer[] { 1, null })
2816 +    {
2817 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2818 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2819 +        final Noop r = new Noop();
2820 +        final CompletableFuture<Void> h = m.runAfterEither(f, g, r);
2821 +
2822 +        assertTrue(g.cancel(mayInterruptIfRunning));
2823 +        checkCompletedWithWrappedCancellationException(h);
2824 +        f.complete(v1);
2825 +
2826 +        checkCancelled(g);
2827 +        assertEquals(0, r.invocationCount);
2828 +        checkCompletedNormally(f, v1);
2829 +        checkCompletedWithWrappedCancellationException(h);
2830 +    }}
2831 +
2832 +    public void testRunAfterEither_sourceCancelled3() {
2833 +        for (ExecutionMode m : ExecutionMode.values())
2834 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2835 +        for (Integer v1 : new Integer[] { 1, null })
2836 +    {
2837 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2838 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2839 +        final Noop r = new Noop();
2840 +
2841 +        assertTrue(g.cancel(mayInterruptIfRunning));
2842 +        f.complete(v1);
2843 +        final CompletableFuture<Void> h = m.runAfterEither(f, g, r);
2844 +
2845 +        // unspecified behavior
2846 +        Integer v;
2847 +        try {
2848 +            assertNull(h.join());
2849 +            assertEquals(1, r.invocationCount);
2850 +        } catch (CompletionException ok) {
2851 +            checkCompletedWithWrappedCancellationException(h);
2852 +            assertEquals(0, r.invocationCount);
2853 +        }
2854 +
2855 +        checkCancelled(g);
2856 +        checkCompletedNormally(f, v1);
2857 +    }}
2858 +
2859 +    public void testRunAfterEither_sourceCancelled4() {
2860 +        for (ExecutionMode m : ExecutionMode.values())
2861 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2862 +        for (Integer v1 : new Integer[] { 1, null })
2863 +    {
2864 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2865 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2866 +        final Noop r = new Noop();
2867 +
2868 +        assertTrue(f.cancel(mayInterruptIfRunning));
2869 +        g.complete(v1);
2870 +        final CompletableFuture<Void> h = m.runAfterEither(f, g, r);
2871 +
2872 +        // unspecified behavior
2873 +        Integer v;
2874 +        try {
2875 +            assertNull(h.join());
2876 +            assertEquals(1, r.invocationCount);
2877 +        } catch (CompletionException ok) {
2878 +            checkCompletedWithWrappedCancellationException(h);
2879 +            assertEquals(0, r.invocationCount);
2880 +        }
2881 +
2882 +        checkCancelled(f);
2883 +        checkCompletedNormally(g, v1);
2884 +    }}
2885 +
2886 +    /**
2887 +     * thenCompose result completes normally after normal completion of source
2888 +     */
2889 +    public void testThenCompose_normalCompletion() {
2890 +        for (ExecutionMode m : ExecutionMode.values())
2891 +        for (boolean createIncomplete : new boolean[] { true, false })
2892 +        for (Integer v1 : new Integer[] { 1, null })
2893 +    {
2894 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2895 +        final CompletableFutureInc r = new CompletableFutureInc();
2896 +        if (!createIncomplete) f.complete(v1);
2897 +        final CompletableFuture<Integer> g = f.thenCompose(r);
2898 +        if (createIncomplete) f.complete(v1);
2899 +
2900 +        checkCompletedNormally(g, inc(v1));
2901 +        checkCompletedNormally(f, v1);
2902 +        assertEquals(1, r.invocationCount);
2903 +    }}
2904 +
2905 +    /**
2906 +     * thenCompose result completes exceptionally after exceptional
2907 +     * completion of source
2908 +     */
2909 +    public void testThenCompose_exceptionalCompletion() {
2910 +        for (ExecutionMode m : ExecutionMode.values())
2911 +        for (boolean createIncomplete : new boolean[] { true, false })
2912 +    {
2913 +        final CFException ex = new CFException();
2914 +        final CompletableFutureInc r = new CompletableFutureInc();
2915 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2916 +        if (!createIncomplete) f.completeExceptionally(ex);
2917 +        final CompletableFuture<Integer> g = f.thenCompose(r);
2918 +        if (createIncomplete) f.completeExceptionally(ex);
2919 +
2920 +        checkCompletedWithWrappedCFException(g, ex);
2921 +        checkCompletedWithWrappedCFException(f, ex);
2922 +        assertEquals(0, r.invocationCount);
2923 +    }}
2924 +
2925 +    /**
2926 +     * thenCompose result completes exceptionally if action does
2927 +     */
2928 +    public void testThenCompose_actionFailed() {
2929 +        for (ExecutionMode m : ExecutionMode.values())
2930 +        for (boolean createIncomplete : new boolean[] { true, false })
2931 +        for (Integer v1 : new Integer[] { 1, null })
2932 +    {
2933 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2934 +        final FailingCompletableFutureFunction r
2935 +            = new FailingCompletableFutureFunction();
2936 +        if (!createIncomplete) f.complete(v1);
2937 +        final CompletableFuture<Integer> g = f.thenCompose(r);
2938 +        if (createIncomplete) f.complete(v1);
2939 +
2940 +        checkCompletedWithWrappedCFException(g);
2941 +        checkCompletedNormally(f, v1);
2942 +    }}
2943 +
2944 +    /**
2945 +     * thenCompose result completes exceptionally if source cancelled
2946 +     */
2947 +    public void testThenCompose_sourceCancelled() {
2948 +        for (ExecutionMode m : ExecutionMode.values())
2949 +        for (boolean createIncomplete : new boolean[] { true, false })
2950 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2951 +    {
2952 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2953 +        final CompletableFutureInc r = new CompletableFutureInc();
2954 +        if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
2955 +        final CompletableFuture<Integer> g = f.thenCompose(r);
2956 +        if (createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
2957 +
2958 +        checkCompletedWithWrappedCancellationException(g);
2959 +        checkCancelled(f);
2960 +    }}
2961 +
2962 +    // asyncs
2963 +
2964 +    /**
2965 +     * thenAcceptAsync result completes normally after normal
2966 +     * completion of source
2967 +     */
2968 +    public void testThenAcceptAsync() {
2969 +        CompletableFuture<Integer> f = new CompletableFuture<>();
2970 +        IncAction r = new IncAction();
2971 +        CompletableFuture<Void> g = f.thenAcceptAsync(r);
2972 +        f.complete(one);
2973 +        checkCompletedNormally(g, null);
2974 +        assertEquals(r.value, (Integer) 2);
2975 +    }
2976 +
2977 +    /**
2978 +     * thenAcceptAsync result completes exceptionally after exceptional
2979 +     * completion of source
2980 +     */
2981 +    public void testThenAcceptAsync2() {
2982 +        CompletableFuture<Integer> f = new CompletableFuture<>();
2983 +        IncAction r = new IncAction();
2984 +        CompletableFuture<Void> g = f.thenAcceptAsync(r);
2985 +        f.completeExceptionally(new CFException());
2986 +        checkCompletedWithWrappedCFException(g);
2987 +    }
2988 +
2989 +    /**
2990 +     * thenAcceptAsync result completes exceptionally if action does
2991 +     */
2992 +    public void testThenAcceptAsync3() {
2993 +        CompletableFuture<Integer> f = new CompletableFuture<>();
2994 +        FailingConsumer r = new FailingConsumer();
2995 +        CompletableFuture<Void> g = f.thenAcceptAsync(r);
2996 +        f.complete(null);
2997 +        checkCompletedWithWrappedCFException(g);
2998 +    }
2999 +
3000 +    /**
3001 +     * thenAcceptAsync result completes exceptionally if source cancelled
3002 +     */
3003 +    public void testThenAcceptAsync4() {
3004 +        CompletableFuture<Integer> f = new CompletableFuture<>();
3005 +        IncAction r = new IncAction();
3006 +        CompletableFuture<Void> g = f.thenAcceptAsync(r);
3007 +        assertTrue(f.cancel(true));
3008 +        checkCompletedWithWrappedCancellationException(g);
3009 +    }
3010 +
3011 +    // async with explicit executors
3012 +
3013 +    /**
3014 +     * thenAcceptAsync result completes normally after normal
3015 +     * completion of source
3016 +     */
3017 +    public void testThenAcceptAsyncE() {
3018 +        CompletableFuture<Integer> f = new CompletableFuture<>();
3019 +        IncAction r = new IncAction();
3020 +        CompletableFuture<Void> g = f.thenAcceptAsync(r, new ThreadExecutor());
3021 +        f.complete(one);
3022 +        checkCompletedNormally(g, null);
3023 +        assertEquals(r.value, (Integer) 2);
3024 +    }
3025 +
3026 +    /**
3027 +     * thenAcceptAsync result completes exceptionally after exceptional
3028 +     * completion of source
3029 +     */
3030 +    public void testThenAcceptAsync2E() {
3031 +        CompletableFuture<Integer> f = new CompletableFuture<>();
3032 +        IncAction r = new IncAction();
3033 +        CompletableFuture<Void> g = f.thenAcceptAsync(r, new ThreadExecutor());
3034 +        f.completeExceptionally(new CFException());
3035 +        checkCompletedWithWrappedCFException(g);
3036 +    }
3037 +
3038 +    /**
3039 +     * thenAcceptAsync result completes exceptionally if action does
3040 +     */
3041 +    public void testThenAcceptAsync3E() {
3042 +        CompletableFuture<Integer> f = new CompletableFuture<>();
3043 +        FailingConsumer r = new FailingConsumer();
3044 +        CompletableFuture<Void> g = f.thenAcceptAsync(r, new ThreadExecutor());
3045 +        f.complete(null);
3046 +        checkCompletedWithWrappedCFException(g);
3047 +    }
3048 +
3049 +    /**
3050 +     * thenAcceptAsync result completes exceptionally if source cancelled
3051 +     */
3052 +    public void testThenAcceptAsync4E() {
3053 +        CompletableFuture<Integer> f = new CompletableFuture<>();
3054 +        IncAction r = new IncAction();
3055 +        CompletableFuture<Void> g = f.thenAcceptAsync(r, new ThreadExecutor());
3056 +        assertTrue(f.cancel(true));
3057 +        checkCompletedWithWrappedCancellationException(g);
3058 +    }
3059 +
3060 +    // other static methods
3061 +
3062 +    /**
3063 +     * allOf(no component futures) returns a future completed normally
3064 +     * with the value null
3065 +     */
3066 +    public void testAllOf_empty() throws Exception {
3067 +        CompletableFuture<Void> f = CompletableFuture.allOf();
3068 +        checkCompletedNormally(f, null);
3069 +    }
3070 +
3071 +    /**
3072 +     * allOf returns a future completed normally with the value null
3073 +     * when all components complete normally
3074 +     */
3075 +    public void testAllOf_normal() throws Exception {
3076 +        for (int k = 1; k < 20; ++k) {
3077 +            CompletableFuture<Integer>[] fs = (CompletableFuture<Integer>[]) new CompletableFuture[k];
3078 +            for (int i = 0; i < k; ++i)
3079 +                fs[i] = new CompletableFuture<>();
3080 +            CompletableFuture<Void> f = CompletableFuture.allOf(fs);
3081 +            for (int i = 0; i < k; ++i) {
3082 +                checkIncomplete(f);
3083 +                checkIncomplete(CompletableFuture.allOf(fs));
3084 +                fs[i].complete(one);
3085 +            }
3086 +            checkCompletedNormally(f, null);
3087 +            checkCompletedNormally(CompletableFuture.allOf(fs), null);
3088 +        }
3089 +    }
3090 +
3091 +    /**
3092 +     * anyOf(no component futures) returns an incomplete future
3093 +     */
3094 +    public void testAnyOf_empty() throws Exception {
3095 +        CompletableFuture<Object> f = CompletableFuture.anyOf();
3096 +        checkIncomplete(f);
3097 +    }
3098 +
3099 +    /**
3100 +     * anyOf returns a future completed normally with a value when
3101 +     * a component future does
3102 +     */
3103 +    public void testAnyOf_normal() throws Exception {
3104 +        for (int k = 0; k < 10; ++k) {
3105 +            CompletableFuture[] fs = new CompletableFuture[k];
3106 +            for (int i = 0; i < k; ++i)
3107 +                fs[i] = new CompletableFuture<>();
3108 +            CompletableFuture<Object> f = CompletableFuture.anyOf(fs);
3109 +            checkIncomplete(f);
3110 +            for (int i = 0; i < k; ++i) {
3111 +                fs[i].complete(one);
3112 +                checkCompletedNormally(f, one);
3113 +                checkCompletedNormally(CompletableFuture.anyOf(fs), one);
3114 +            }
3115 +        }
3116 +    }
3117 +
3118 +    /**
3119 +     * anyOf result completes exceptionally when any component does.
3120 +     */
3121 +    public void testAnyOf_exceptional() throws Exception {
3122 +        for (int k = 0; k < 10; ++k) {
3123 +            CompletableFuture[] fs = new CompletableFuture[k];
3124 +            for (int i = 0; i < k; ++i)
3125 +                fs[i] = new CompletableFuture<>();
3126 +            CompletableFuture<Object> f = CompletableFuture.anyOf(fs);
3127 +            checkIncomplete(f);
3128 +            for (int i = 0; i < k; ++i) {
3129 +                fs[i].completeExceptionally(new CFException());
3130 +                checkCompletedWithWrappedCFException(f);
3131 +                checkCompletedWithWrappedCFException(CompletableFuture.anyOf(fs));
3132 +            }
3133 +        }
3134 +    }
3135 +
3136 +    /**
3137 +     * Completion methods throw NullPointerException with null arguments
3138 +     */
3139 +    public void testNPE() {
3140 +        CompletableFuture<Integer> f = new CompletableFuture<>();
3141 +        CompletableFuture<Integer> g = new CompletableFuture<>();
3142 +        CompletableFuture<Integer> nullFuture = (CompletableFuture<Integer>)null;
3143 +        CompletableFuture<?> h;
3144 +        ThreadExecutor exec = new ThreadExecutor();
3145 +
3146 +        Runnable[] throwingActions = {
3147 +            () -> CompletableFuture.supplyAsync(null),
3148 +            () -> CompletableFuture.supplyAsync(null, exec),
3149 +            () -> CompletableFuture.supplyAsync(supplyOne, null),
3150 +
3151 +            () -> CompletableFuture.runAsync(null),
3152 +            () -> CompletableFuture.runAsync(null, exec),
3153 +            () -> CompletableFuture.runAsync(() -> {}, null),
3154 +
3155 +            () -> f.completeExceptionally(null),
3156 +
3157 +            () -> f.thenApply(null),
3158 +            () -> f.thenApplyAsync(null),
3159 +            () -> f.thenApplyAsync((x) -> x, null),
3160 +            () -> f.thenApplyAsync(null, exec),
3161 +
3162 +            () -> f.thenAccept(null),
3163 +            () -> f.thenAcceptAsync(null),
3164 +            () -> f.thenAcceptAsync((x) -> {} , null),
3165 +            () -> f.thenAcceptAsync(null, exec),
3166 +
3167 +            () -> f.thenRun(null),
3168 +            () -> f.thenRunAsync(null),
3169 +            () -> f.thenRunAsync(() -> {} , null),
3170 +            () -> f.thenRunAsync(null, exec),
3171 +
3172 +            () -> f.thenCombine(g, null),
3173 +            () -> f.thenCombineAsync(g, null),
3174 +            () -> f.thenCombineAsync(g, null, exec),
3175 +            () -> f.thenCombine(nullFuture, (x, y) -> x),
3176 +            () -> f.thenCombineAsync(nullFuture, (x, y) -> x),
3177 +            () -> f.thenCombineAsync(nullFuture, (x, y) -> x, exec),
3178 +            () -> f.thenCombineAsync(g, (x, y) -> x, null),
3179 +
3180 +            () -> f.thenAcceptBoth(g, null),
3181 +            () -> f.thenAcceptBothAsync(g, null),
3182 +            () -> f.thenAcceptBothAsync(g, null, exec),
3183 +            () -> f.thenAcceptBoth(nullFuture, (x, y) -> {}),
3184 +            () -> f.thenAcceptBothAsync(nullFuture, (x, y) -> {}),
3185 +            () -> f.thenAcceptBothAsync(nullFuture, (x, y) -> {}, exec),
3186 +            () -> f.thenAcceptBothAsync(g, (x, y) -> {}, null),
3187 +
3188 +            () -> f.runAfterBoth(g, null),
3189 +            () -> f.runAfterBothAsync(g, null),
3190 +            () -> f.runAfterBothAsync(g, null, exec),
3191 +            () -> f.runAfterBoth(nullFuture, () -> {}),
3192 +            () -> f.runAfterBothAsync(nullFuture, () -> {}),
3193 +            () -> f.runAfterBothAsync(nullFuture, () -> {}, exec),
3194 +            () -> f.runAfterBothAsync(g, () -> {}, null),
3195 +
3196 +            () -> f.applyToEither(g, null),
3197 +            () -> f.applyToEitherAsync(g, null),
3198 +            () -> f.applyToEitherAsync(g, null, exec),
3199 +            () -> f.applyToEither(nullFuture, (x) -> x),
3200 +            () -> f.applyToEitherAsync(nullFuture, (x) -> x),
3201 +            () -> f.applyToEitherAsync(nullFuture, (x) -> x, exec),
3202 +            () -> f.applyToEitherAsync(g, (x) -> x, null),
3203 +
3204 +            () -> f.acceptEither(g, null),
3205 +            () -> f.acceptEitherAsync(g, null),
3206 +            () -> f.acceptEitherAsync(g, null, exec),
3207 +            () -> f.acceptEither(nullFuture, (x) -> {}),
3208 +            () -> f.acceptEitherAsync(nullFuture, (x) -> {}),
3209 +            () -> f.acceptEitherAsync(nullFuture, (x) -> {}, exec),
3210 +            () -> f.acceptEitherAsync(g, (x) -> {}, null),
3211 +
3212 +            () -> f.runAfterEither(g, null),
3213 +            () -> f.runAfterEitherAsync(g, null),
3214 +            () -> f.runAfterEitherAsync(g, null, exec),
3215 +            () -> f.runAfterEither(nullFuture, () -> {}),
3216 +            () -> f.runAfterEitherAsync(nullFuture, () -> {}),
3217 +            () -> f.runAfterEitherAsync(nullFuture, () -> {}, exec),
3218 +            () -> f.runAfterEitherAsync(g, () -> {}, null),
3219 +
3220 +            () -> f.thenCompose(null),
3221 +            () -> f.thenComposeAsync(null),
3222 +            () -> f.thenComposeAsync(new CompletableFutureInc(), null),
3223 +            () -> f.thenComposeAsync(null, exec),
3224 +
3225 +            () -> f.exceptionally(null),
3226 +
3227 +            () -> f.handle(null),
3228 +
3229 +            () -> CompletableFuture.allOf((CompletableFuture<?>)null),
3230 +            () -> CompletableFuture.allOf((CompletableFuture<?>[])null),
3231 +            () -> CompletableFuture.allOf(f, null),
3232 +            () -> CompletableFuture.allOf(null, f),
3233 +
3234 +            () -> CompletableFuture.anyOf((CompletableFuture<?>)null),
3235 +            () -> CompletableFuture.anyOf((CompletableFuture<?>[])null),
3236 +            () -> CompletableFuture.anyOf(f, null),
3237 +            () -> CompletableFuture.anyOf(null, f),
3238 +
3239 +            () -> f.obtrudeException(null),
3240 +        };
3241 +
3242 +        assertThrows(NullPointerException.class, throwingActions);
3243 +        assertEquals(0, exec.count.get());
3244 +    }
3245 +
3246 +    /**
3247 +     * toCompletableFuture returns this CompletableFuture.
3248 +     */
3249 +    public void testToCompletableFuture() {
3250 +        CompletableFuture<Integer> f = new CompletableFuture<>();
3251 +        assertSame(f, f.toCompletableFuture());
3252 +    }
3253 +
3254 +    /**
3255 +     * whenComplete action executes on normal completion, propagating
3256 +     * source result.
3257 +     */
3258 +    public void testWhenComplete_normalCompletion1() {
3259 +        for (ExecutionMode m : ExecutionMode.values())
3260 +        for (boolean createIncomplete : new boolean[] { true, false })
3261 +        for (Integer v1 : new Integer[] { 1, null })
3262 +    {
3263 +        final AtomicInteger a = new AtomicInteger(0);
3264 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
3265 +        if (!createIncomplete) f.complete(v1);
3266 +        final CompletableFuture<Integer> g = m.whenComplete
3267 +            (f,
3268 +             (Integer x, Throwable t) -> {
3269 +                threadAssertSame(x, v1);
3270 +                threadAssertNull(t);
3271 +                a.getAndIncrement();
3272 +            });
3273 +        if (createIncomplete) f.complete(v1);
3274 +
3275 +        checkCompletedNormally(g, v1);
3276 +        checkCompletedNormally(f, v1);
3277 +        assertEquals(1, a.get());
3278 +    }}
3279 +
3280 +    /**
3281 +     * whenComplete action executes on exceptional completion, propagating
3282 +     * source result.
3283 +     */
3284 +    public void testWhenComplete_exceptionalCompletion() {
3285 +        for (ExecutionMode m : ExecutionMode.values())
3286 +        for (boolean createIncomplete : new boolean[] { true, false })
3287 +        for (Integer v1 : new Integer[] { 1, null })
3288 +    {
3289 +        final AtomicInteger a = new AtomicInteger(0);
3290 +        final CFException ex = new CFException();
3291 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
3292 +        if (!createIncomplete) f.completeExceptionally(ex);
3293 +        final CompletableFuture<Integer> g = m.whenComplete
3294 +            (f,
3295 +             (Integer x, Throwable t) -> {
3296 +                threadAssertNull(x);
3297 +                threadAssertSame(t, ex);
3298 +                a.getAndIncrement();
3299 +            });
3300 +        if (createIncomplete) f.completeExceptionally(ex);
3301 +        checkCompletedWithWrappedCFException(f, ex);
3302 +        checkCompletedWithWrappedCFException(g, ex);
3303 +        assertEquals(1, a.get());
3304 +    }}
3305 +
3306 +    /**
3307 +     * whenComplete action executes on cancelled source, propagating
3308 +     * CancellationException.
3309 +     */
3310 +    public void testWhenComplete_sourceCancelled() {
3311 +        for (ExecutionMode m : ExecutionMode.values())
3312 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
3313 +        for (boolean createIncomplete : new boolean[] { true, false })
3314 +    {
3315 +        final AtomicInteger a = new AtomicInteger(0);
3316 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
3317 +        if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
3318 +        final CompletableFuture<Integer> g = m.whenComplete
3319 +            (f,
3320 +             (Integer x, Throwable t) -> {
3321 +                threadAssertNull(x);
3322 +                threadAssertTrue(t instanceof CancellationException);
3323 +                a.getAndIncrement();
3324 +            });
3325 +        if (createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
3326 +
3327 +        //try { g.join(); } catch (Throwable t) { throw new Error(t); }
3328 +        checkCompletedWithWrappedCancellationException(g);
3329 +        checkCancelled(f);
3330 +        assertEquals(1, a.get());
3331 +    }}
3332 +
3333 +    /**
3334 +     * If a whenComplete action throws an exception when triggered by
3335 +     * a normal completion, it completes exceptionally
3336 +     */
3337 +    public void testWhenComplete_actionFailed() {
3338 +        for (boolean createIncomplete : new boolean[] { true, false })
3339 +        for (ExecutionMode m : ExecutionMode.values())
3340 +        for (Integer v1 : new Integer[] { 1, null })
3341 +    {
3342 +        final AtomicInteger a = new AtomicInteger(0);
3343 +        final CFException ex = new CFException();
3344 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
3345 +        if (!createIncomplete) f.complete(v1);
3346 +        final CompletableFuture<Integer> g = m.whenComplete
3347 +            (f,
3348 +             (Integer x, Throwable t) -> {
3349 +                threadAssertSame(x, v1);
3350 +                threadAssertNull(t);
3351 +                a.getAndIncrement();
3352 +                throw ex;
3353 +            });
3354 +        if (createIncomplete) f.complete(v1);
3355 +        checkCompletedNormally(f, v1);
3356 +        checkCompletedWithWrappedCFException(g, ex);
3357 +        assertEquals(1, a.get());
3358 +    }}
3359 +
3360 +    /**
3361 +     * If a whenComplete action throws an exception when triggered by
3362 +     * a source completion that also throws an exception, the source
3363 +     * exception takes precedence.
3364 +     */
3365 +    public void testWhenComplete_actionFailedSourceFailed() {
3366 +        for (boolean createIncomplete : new boolean[] { true, false })
3367 +        for (ExecutionMode m : ExecutionMode.values())
3368 +        for (Integer v1 : new Integer[] { 1, null })
3369 +    {
3370 +        final AtomicInteger a = new AtomicInteger(0);
3371 +        final CFException ex1 = new CFException();
3372 +        final CFException ex2 = new CFException();
3373 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
3374 +
3375 +        if (!createIncomplete) f.completeExceptionally(ex1);
3376 +        final CompletableFuture<Integer> g = m.whenComplete
3377 +            (f,
3378 +             (Integer x, Throwable t) -> {
3379 +                threadAssertSame(t, ex1);
3380 +                threadAssertNull(x);
3381 +                a.getAndIncrement();
3382 +                throw ex2;
3383 +            });
3384 +        if (createIncomplete) f.completeExceptionally(ex1);
3385 +
3386 +        checkCompletedWithWrappedCFException(f, ex1);
3387 +        checkCompletedWithWrappedCFException(g, ex1);
3388 +        assertEquals(1, a.get());
3389 +    }}
3390 +
3391   }

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