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Comparing jsr166/src/test/tck/CompletableFutureTest.java (file contents):
Revision 1.2 by jsr166, Wed Feb 6 20:29:55 2013 UTC vs.
Revision 1.51 by jsr166, Mon Jun 2 19:49:28 2014 UTC

# Line 1 | Line 1
1   /*
2 < * Written by Doug Lea with assistance from members of JCP JSR-166
3 < * Expert Group and released to the public domain, as explained at
2 > * Written by Doug Lea and Martin Buchholz with assistance from
3 > * members of JCP JSR-166 Expert Group and released to the public
4 > * domain, as explained at
5   * http://creativecommons.org/publicdomain/zero/1.0/
5 * Other contributors include Andrew Wright, Jeffrey Hayes,
6 * Pat Fisher, Mike Judd.
6   */
7  
8   import junit.framework.*;
9   import java.util.concurrent.Callable;
10 + import java.util.concurrent.Executor;
11 + import java.util.concurrent.ExecutorService;
12 + import java.util.concurrent.Executors;
13   import java.util.concurrent.CancellationException;
14   import java.util.concurrent.CountDownLatch;
15   import java.util.concurrent.ExecutionException;
16   import java.util.concurrent.Future;
17   import java.util.concurrent.CompletableFuture;
18 + import java.util.concurrent.CompletionException;
19 + import java.util.concurrent.CompletionStage;
20 + import java.util.concurrent.ForkJoinPool;
21 + import java.util.concurrent.ForkJoinTask;
22   import java.util.concurrent.TimeoutException;
23   import java.util.concurrent.atomic.AtomicInteger;
24   import static java.util.concurrent.TimeUnit.MILLISECONDS;
25   import static java.util.concurrent.TimeUnit.SECONDS;
26   import java.util.*;
27 + import java.util.function.Supplier;
28 + import java.util.function.Consumer;
29 + import java.util.function.BiConsumer;
30 + import java.util.function.Function;
31 + import java.util.function.BiFunction;
32  
33   public class CompletableFutureTest extends JSR166TestCase {
34  
# Line 28 | Line 39 | public class CompletableFutureTest exten
39          return new TestSuite(CompletableFutureTest.class);
40      }
41  
42 +    static class CFException extends RuntimeException {}
43 +
44 +    void checkIncomplete(CompletableFuture<?> f) {
45 +        assertFalse(f.isDone());
46 +        assertFalse(f.isCancelled());
47 +        assertTrue(f.toString().contains("[Not completed]"));
48 +        try {
49 +            assertNull(f.getNow(null));
50 +        } catch (Throwable fail) { threadUnexpectedException(fail); }
51 +        try {
52 +            f.get(0L, SECONDS);
53 +            shouldThrow();
54 +        }
55 +        catch (TimeoutException success) {}
56 +        catch (Throwable fail) { threadUnexpectedException(fail); }
57 +    }
58 +
59 +    <T> void checkCompletedNormally(CompletableFuture<T> f, T value) {
60 +        try {
61 +            assertEquals(value, f.get(LONG_DELAY_MS, MILLISECONDS));
62 +        } catch (Throwable fail) { threadUnexpectedException(fail); }
63 +        try {
64 +            assertEquals(value, f.join());
65 +        } catch (Throwable fail) { threadUnexpectedException(fail); }
66 +        try {
67 +            assertEquals(value, f.getNow(null));
68 +        } catch (Throwable fail) { threadUnexpectedException(fail); }
69 +        try {
70 +            assertEquals(value, f.get());
71 +        } catch (Throwable fail) { threadUnexpectedException(fail); }
72 +        assertTrue(f.isDone());
73 +        assertFalse(f.isCancelled());
74 +        assertFalse(f.isCompletedExceptionally());
75 +        assertTrue(f.toString().contains("[Completed normally]"));
76 +    }
77 +
78 +    void checkCompletedWithWrappedCFException(CompletableFuture<?> f) {
79 +        try {
80 +            f.get(LONG_DELAY_MS, MILLISECONDS);
81 +            shouldThrow();
82 +        } catch (ExecutionException success) {
83 +            assertTrue(success.getCause() instanceof CFException);
84 +        } catch (Throwable fail) { threadUnexpectedException(fail); }
85 +        try {
86 +            f.join();
87 +            shouldThrow();
88 +        } catch (CompletionException success) {
89 +            assertTrue(success.getCause() instanceof CFException);
90 +        }
91 +        try {
92 +            f.getNow(null);
93 +            shouldThrow();
94 +        } catch (CompletionException success) {
95 +            assertTrue(success.getCause() instanceof CFException);
96 +        }
97 +        try {
98 +            f.get();
99 +            shouldThrow();
100 +        } catch (ExecutionException success) {
101 +            assertTrue(success.getCause() instanceof CFException);
102 +        } catch (Throwable fail) { threadUnexpectedException(fail); }
103 +        assertTrue(f.isDone());
104 +        assertFalse(f.isCancelled());
105 +        assertTrue(f.toString().contains("[Completed exceptionally]"));
106 +    }
107 +
108 +    void checkCompletedWithWrappedCFException(CompletableFuture<?> f,
109 +                                              CFException ex) {
110 +        try {
111 +            f.get(LONG_DELAY_MS, MILLISECONDS);
112 +            shouldThrow();
113 +        } catch (ExecutionException success) {
114 +            assertSame(ex, success.getCause());
115 +        } catch (Throwable fail) { threadUnexpectedException(fail); }
116 +        try {
117 +            f.join();
118 +            shouldThrow();
119 +        } catch (CompletionException success) {
120 +            assertSame(ex, success.getCause());
121 +        }
122 +        try {
123 +            f.getNow(null);
124 +            shouldThrow();
125 +        } catch (CompletionException success) {
126 +            assertSame(ex, success.getCause());
127 +        }
128 +        try {
129 +            f.get();
130 +            shouldThrow();
131 +        } catch (ExecutionException success) {
132 +            assertSame(ex, success.getCause());
133 +        } catch (Throwable fail) { threadUnexpectedException(fail); }
134 +        assertTrue(f.isDone());
135 +        assertFalse(f.isCancelled());
136 +        assertTrue(f.toString().contains("[Completed exceptionally]"));
137 +    }
138 +
139 +    void checkCancelled(CompletableFuture<?> f) {
140 +        try {
141 +            f.get(LONG_DELAY_MS, MILLISECONDS);
142 +            shouldThrow();
143 +        } catch (CancellationException success) {
144 +        } catch (Throwable fail) { threadUnexpectedException(fail); }
145 +        try {
146 +            f.join();
147 +            shouldThrow();
148 +        } catch (CancellationException success) {}
149 +        try {
150 +            f.getNow(null);
151 +            shouldThrow();
152 +        } catch (CancellationException success) {}
153 +        try {
154 +            f.get();
155 +            shouldThrow();
156 +        } catch (CancellationException success) {
157 +        } catch (Throwable fail) { threadUnexpectedException(fail); }
158 +        assertTrue(f.isDone());
159 +        assertTrue(f.isCompletedExceptionally());
160 +        assertTrue(f.isCancelled());
161 +        assertTrue(f.toString().contains("[Completed exceptionally]"));
162 +    }
163 +
164 +    void checkCompletedWithWrappedCancellationException(CompletableFuture<?> f) {
165 +        try {
166 +            f.get(LONG_DELAY_MS, MILLISECONDS);
167 +            shouldThrow();
168 +        } catch (ExecutionException success) {
169 +            assertTrue(success.getCause() instanceof CancellationException);
170 +        } catch (Throwable fail) { threadUnexpectedException(fail); }
171 +        try {
172 +            f.join();
173 +            shouldThrow();
174 +        } catch (CompletionException success) {
175 +            assertTrue(success.getCause() instanceof CancellationException);
176 +        }
177 +        try {
178 +            f.getNow(null);
179 +            shouldThrow();
180 +        } catch (CompletionException success) {
181 +            assertTrue(success.getCause() instanceof CancellationException);
182 +        }
183 +        try {
184 +            f.get();
185 +            shouldThrow();
186 +        } catch (ExecutionException success) {
187 +            assertTrue(success.getCause() instanceof CancellationException);
188 +        } catch (Throwable fail) { threadUnexpectedException(fail); }
189 +        assertTrue(f.isDone());
190 +        assertFalse(f.isCancelled());
191 +        assertTrue(f.isCompletedExceptionally());
192 +        assertTrue(f.toString().contains("[Completed exceptionally]"));
193 +    }
194 +
195 +    /**
196 +     * A newly constructed CompletableFuture is incomplete, as indicated
197 +     * by methods isDone, isCancelled, and getNow
198 +     */
199 +    public void testConstructor() {
200 +        CompletableFuture<Integer> f = new CompletableFuture<>();
201 +        checkIncomplete(f);
202 +    }
203 +
204 +    /**
205 +     * complete completes normally, as indicated by methods isDone,
206 +     * isCancelled, join, get, and getNow
207 +     */
208 +    public void testComplete() {
209 +        CompletableFuture<Integer> f = new CompletableFuture<>();
210 +        checkIncomplete(f);
211 +        f.complete(one);
212 +        checkCompletedNormally(f, one);
213 +    }
214 +
215 +    /**
216 +     * completeExceptionally completes exceptionally, as indicated by
217 +     * methods isDone, isCancelled, join, get, and getNow
218 +     */
219 +    public void testCompleteExceptionally() {
220 +        CompletableFuture<Integer> f = new CompletableFuture<>();
221 +        checkIncomplete(f);
222 +        f.completeExceptionally(new CFException());
223 +        checkCompletedWithWrappedCFException(f);
224 +    }
225 +
226 +    /**
227 +     * cancel completes exceptionally and reports cancelled, as indicated by
228 +     * methods isDone, isCancelled, join, get, and getNow
229 +     */
230 +    public void testCancel() {
231 +        CompletableFuture<Integer> f = new CompletableFuture<>();
232 +        checkIncomplete(f);
233 +        assertTrue(f.cancel(true));
234 +        checkCancelled(f);
235 +    }
236 +
237 +    /**
238 +     * obtrudeValue forces completion with given value
239 +     */
240 +    public void testObtrudeValue() {
241 +        CompletableFuture<Integer> f = new CompletableFuture<>();
242 +        checkIncomplete(f);
243 +        f.complete(one);
244 +        checkCompletedNormally(f, one);
245 +        f.obtrudeValue(three);
246 +        checkCompletedNormally(f, three);
247 +        f.obtrudeValue(two);
248 +        checkCompletedNormally(f, two);
249 +        f = new CompletableFuture<>();
250 +        f.obtrudeValue(three);
251 +        checkCompletedNormally(f, three);
252 +        f.obtrudeValue(null);
253 +        checkCompletedNormally(f, null);
254 +        f = new CompletableFuture<>();
255 +        f.completeExceptionally(new CFException());
256 +        f.obtrudeValue(four);
257 +        checkCompletedNormally(f, four);
258 +    }
259 +
260 +    /**
261 +     * obtrudeException forces completion with given exception
262 +     */
263 +    public void testObtrudeException() {
264 +        CompletableFuture<Integer> f = new CompletableFuture<>();
265 +        checkIncomplete(f);
266 +        f.complete(one);
267 +        checkCompletedNormally(f, one);
268 +        f.obtrudeException(new CFException());
269 +        checkCompletedWithWrappedCFException(f);
270 +        f = new CompletableFuture<>();
271 +        f.obtrudeException(new CFException());
272 +        checkCompletedWithWrappedCFException(f);
273 +        f = new CompletableFuture<>();
274 +        f.completeExceptionally(new CFException());
275 +        f.obtrudeValue(four);
276 +        checkCompletedNormally(f, four);
277 +        f.obtrudeException(new CFException());
278 +        checkCompletedWithWrappedCFException(f);
279 +    }
280 +
281 +    /**
282 +     * getNumberOfDependents returns number of dependent tasks
283 +     */
284 +    public void testGetNumberOfDependents() {
285 +        CompletableFuture<Integer> f = new CompletableFuture<>();
286 +        assertEquals(0, f.getNumberOfDependents());
287 +        CompletableFuture g = f.thenRun(new Noop());
288 +        assertEquals(1, f.getNumberOfDependents());
289 +        assertEquals(0, g.getNumberOfDependents());
290 +        CompletableFuture h = f.thenRun(new Noop());
291 +        assertEquals(2, f.getNumberOfDependents());
292 +        f.complete(1);
293 +        checkCompletedNormally(g, null);
294 +        assertEquals(0, f.getNumberOfDependents());
295 +        assertEquals(0, g.getNumberOfDependents());
296 +    }
297 +
298 +    /**
299 +     * toString indicates current completion state
300 +     */
301      public void testToString() {
302          CompletableFuture<String> f;
303  
# Line 41 | Line 311 | public class CompletableFutureTest exten
311          f.completeExceptionally(new IndexOutOfBoundsException());
312          assertTrue(f.toString().contains("[Completed exceptionally]"));
313      }
314 +
315 +    /**
316 +     * completedFuture returns a completed CompletableFuture with given value
317 +     */
318 +    public void testCompletedFuture() {
319 +        CompletableFuture<String> f = CompletableFuture.completedFuture("test");
320 +        checkCompletedNormally(f, "test");
321 +    }
322 +
323 +    // Choose non-commutative actions for better coverage
324 +
325 +    // A non-commutative function that handles and produces null values as well.
326 +    static Integer subtract(Integer x, Integer y) {
327 +        return (x == null && y == null) ? null :
328 +            ((x == null) ? 42 : x.intValue())
329 +            - ((y == null) ? 99 : y.intValue());
330 +    }
331 +
332 +    // A function that handles and produces null values as well.
333 +    static Integer inc(Integer x) {
334 +        return (x == null) ? null : x + 1;
335 +    }
336 +
337 +    static final Supplier<Integer> supplyOne =
338 +        () -> Integer.valueOf(1);
339 +    static final Function<Integer, Integer> inc =
340 +        (Integer x) -> Integer.valueOf(x.intValue() + 1);
341 +    static final BiFunction<Integer, Integer, Integer> subtract =
342 +        (Integer x, Integer y) -> subtract(x, y);
343 +    static final class IncAction implements Consumer<Integer> {
344 +        int invocationCount = 0;
345 +        Integer value;
346 +        public void accept(Integer x) {
347 +            invocationCount++;
348 +            value = inc(x);
349 +        }
350 +    }
351 +    static final class IncFunction implements Function<Integer,Integer> {
352 +        int invocationCount = 0;
353 +        Integer value;
354 +        public Integer apply(Integer x) {
355 +            invocationCount++;
356 +            return value = inc(x);
357 +        }
358 +    }
359 +    static final class SubtractAction implements BiConsumer<Integer, Integer> {
360 +        int invocationCount = 0;
361 +        Integer value;
362 +        // Check this action was invoked exactly once when result is computed.
363 +        public void accept(Integer x, Integer y) {
364 +            invocationCount++;
365 +            value = subtract(x, y);
366 +        }
367 +    }
368 +    static final class SubtractFunction implements BiFunction<Integer, Integer, Integer> {
369 +        int invocationCount = 0;
370 +        Integer value;
371 +        // Check this action was invoked exactly once when result is computed.
372 +        public Integer apply(Integer x, Integer y) {
373 +            invocationCount++;
374 +            return value = subtract(x, y);
375 +        }
376 +    }
377 +    static final class Noop implements Runnable {
378 +        int invocationCount = 0;
379 +        public void run() {
380 +            invocationCount++;
381 +        }
382 +    }
383 +
384 +    static final class FailingSupplier implements Supplier<Integer> {
385 +        int invocationCount = 0;
386 +        public Integer get() {
387 +            invocationCount++;
388 +            throw new CFException();
389 +        }
390 +    }
391 +    static final class FailingConsumer implements Consumer<Integer> {
392 +        int invocationCount = 0;
393 +        public void accept(Integer x) {
394 +            invocationCount++;
395 +            throw new CFException();
396 +        }
397 +    }
398 +    static final class FailingBiConsumer implements BiConsumer<Integer, Integer> {
399 +        int invocationCount = 0;
400 +        public void accept(Integer x, Integer y) {
401 +            invocationCount++;
402 +            throw new CFException();
403 +        }
404 +    }
405 +    static final class FailingFunction implements Function<Integer, Integer> {
406 +        int invocationCount = 0;
407 +        public Integer apply(Integer x) {
408 +            invocationCount++;
409 +            throw new CFException();
410 +        }
411 +    }
412 +    static final class FailingBiFunction implements BiFunction<Integer, Integer, Integer> {
413 +        int invocationCount = 0;
414 +        public Integer apply(Integer x, Integer y) {
415 +            invocationCount++;
416 +            throw new CFException();
417 +        }
418 +    }
419 +    static final class FailingRunnable 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 +        FailingRunnable r = new FailingRunnable();
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) {
987 +            checkIncomplete(g);
988 +            f.complete(v1);
989 +        }
990 +
991 +        checkCompletedNormally(g, null);
992 +        checkCompletedNormally(f, v1);
993 +        assertEquals(1, r.invocationCount);
994 +    }}
995 +
996 +    /**
997 +     * thenRun result completes exceptionally after exceptional
998 +     * completion of source
999 +     */
1000 +    public void testThenRun_exceptionalCompletion() {
1001 +        for (ExecutionMode m : ExecutionMode.values())
1002 +        for (boolean createIncomplete : new boolean[] { true, false })
1003 +    {
1004 +        final CFException ex = new CFException();
1005 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1006 +        final Noop r = new Noop();
1007 +        if (!createIncomplete) f.completeExceptionally(ex);
1008 +        final CompletableFuture<Void> g = m.thenRun(f, r);
1009 +        if (createIncomplete) {
1010 +            checkIncomplete(g);
1011 +            f.completeExceptionally(ex);
1012 +        }
1013 +
1014 +        checkCompletedWithWrappedCFException(g, ex);
1015 +        checkCompletedWithWrappedCFException(f, ex);
1016 +        assertEquals(0, r.invocationCount);
1017 +    }}
1018 +
1019 +    /**
1020 +     * thenRun result completes exceptionally if source cancelled
1021 +     */
1022 +    public void testThenRun_sourceCancelled() {
1023 +        for (ExecutionMode m : ExecutionMode.values())
1024 +        for (boolean createIncomplete : new boolean[] { true, false })
1025 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1026 +    {
1027 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1028 +        final Noop r = new Noop();
1029 +        if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
1030 +        final CompletableFuture<Void> g = f.thenRun(r);
1031 +        if (createIncomplete) {
1032 +            checkIncomplete(g);
1033 +            assertTrue(f.cancel(mayInterruptIfRunning));
1034 +        }
1035 +
1036 +        checkCompletedWithWrappedCancellationException(g);
1037 +        checkCancelled(f);
1038 +        assertEquals(0, r.invocationCount);
1039 +    }}
1040 +
1041 +    /**
1042 +     * thenRun result completes exceptionally if action does
1043 +     */
1044 +    public void testThenRun_actionFailed() {
1045 +        for (ExecutionMode m : ExecutionMode.values())
1046 +        for (boolean createIncomplete : new boolean[] { true, false })
1047 +        for (Integer v1 : new Integer[] { 1, null })
1048 +    {
1049 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1050 +        final FailingRunnable r = new FailingRunnable();
1051 +        if (!createIncomplete) f.complete(v1);
1052 +        final CompletableFuture<Void> g = f.thenRun(r);
1053 +        if (createIncomplete) {
1054 +            checkIncomplete(g);
1055 +            f.complete(v1);
1056 +        }
1057 +
1058 +        checkCompletedWithWrappedCFException(g);
1059 +        checkCompletedNormally(f, v1);
1060 +    }}
1061 +
1062 +    /**
1063 +     * thenApply result completes normally after normal completion of source
1064 +     */
1065 +    public void testThenApply_normalCompletion() {
1066 +        for (ExecutionMode m : ExecutionMode.values())
1067 +        for (boolean createIncomplete : new boolean[] { true, false })
1068 +        for (Integer v1 : new Integer[] { 1, null })
1069 +    {
1070 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1071 +        final IncFunction r = new IncFunction();
1072 +        if (!createIncomplete) f.complete(v1);
1073 +        final CompletableFuture<Integer> g = m.thenApply(f, r);
1074 +        if (createIncomplete) {
1075 +            checkIncomplete(g);
1076 +            f.complete(v1);
1077 +        }
1078 +
1079 +        checkCompletedNormally(g, inc(v1));
1080 +        checkCompletedNormally(f, v1);
1081 +        assertEquals(1, r.invocationCount);
1082 +    }}
1083 +
1084 +    /**
1085 +     * thenApply result completes exceptionally after exceptional
1086 +     * completion of source
1087 +     */
1088 +    public void testThenApply_exceptionalCompletion() {
1089 +        for (ExecutionMode m : ExecutionMode.values())
1090 +        for (boolean createIncomplete : new boolean[] { true, false })
1091 +    {
1092 +        final CFException ex = new CFException();
1093 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1094 +        final IncFunction r = new IncFunction();
1095 +        if (!createIncomplete) f.completeExceptionally(ex);
1096 +        final CompletableFuture<Integer> g = m.thenApply(f, r);
1097 +        if (createIncomplete) {
1098 +            checkIncomplete(g);
1099 +            f.completeExceptionally(ex);
1100 +        }
1101 +
1102 +        checkCompletedWithWrappedCFException(g, ex);
1103 +        checkCompletedWithWrappedCFException(f, ex);
1104 +        assertEquals(0, r.invocationCount);
1105 +    }}
1106 +
1107 +    /**
1108 +     * thenApply result completes exceptionally if source cancelled
1109 +     */
1110 +    public void testThenApply_sourceCancelled() {
1111 +        for (ExecutionMode m : ExecutionMode.values())
1112 +        for (boolean createIncomplete : new boolean[] { true, false })
1113 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1114 +    {
1115 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1116 +        final IncFunction r = new IncFunction();
1117 +        if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
1118 +        final CompletableFuture<Integer> g = f.thenApply(r);
1119 +        if (createIncomplete) {
1120 +            checkIncomplete(g);
1121 +            assertTrue(f.cancel(mayInterruptIfRunning));
1122 +        }
1123 +
1124 +        checkCompletedWithWrappedCancellationException(g);
1125 +        checkCancelled(f);
1126 +        assertEquals(0, r.invocationCount);
1127 +    }}
1128 +
1129 +    /**
1130 +     * thenApply result completes exceptionally if action does
1131 +     */
1132 +    public void testThenApply_actionFailed() {
1133 +        for (ExecutionMode m : ExecutionMode.values())
1134 +        for (boolean createIncomplete : new boolean[] { true, false })
1135 +        for (Integer v1 : new Integer[] { 1, null })
1136 +    {
1137 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1138 +        final FailingFunction r = new FailingFunction();
1139 +        if (!createIncomplete) f.complete(v1);
1140 +        final CompletableFuture<Integer> g = f.thenApply(r);
1141 +        if (createIncomplete) {
1142 +            checkIncomplete(g);
1143 +            f.complete(v1);
1144 +        }
1145 +
1146 +        checkCompletedWithWrappedCFException(g);
1147 +        checkCompletedNormally(f, v1);
1148 +    }}
1149 +
1150 +    /**
1151 +     * thenAccept result completes normally after normal completion of source
1152 +     */
1153 +    public void testThenAccept_normalCompletion() {
1154 +        for (ExecutionMode m : ExecutionMode.values())
1155 +        for (boolean createIncomplete : new boolean[] { true, false })
1156 +        for (Integer v1 : new Integer[] { 1, null })
1157 +    {
1158 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1159 +        final IncAction r = new IncAction();
1160 +        if (!createIncomplete) f.complete(v1);
1161 +        final CompletableFuture<Void> g = m.thenAccept(f, r);
1162 +        if (createIncomplete) {
1163 +            checkIncomplete(g);
1164 +            f.complete(v1);
1165 +        }
1166 +
1167 +        checkCompletedNormally(g, null);
1168 +        checkCompletedNormally(f, v1);
1169 +        assertEquals(1, r.invocationCount);
1170 +        assertEquals(inc(v1), r.value);
1171 +    }}
1172 +
1173 +    /**
1174 +     * thenAccept result completes exceptionally after exceptional
1175 +     * completion of source
1176 +     */
1177 +    public void testThenAccept_exceptionalCompletion() {
1178 +        for (ExecutionMode m : ExecutionMode.values())
1179 +        for (boolean createIncomplete : new boolean[] { true, false })
1180 +    {
1181 +        final CFException ex = new CFException();
1182 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1183 +        final IncAction r = new IncAction();
1184 +        if (!createIncomplete) f.completeExceptionally(ex);
1185 +        final CompletableFuture<Void> g = m.thenAccept(f, r);
1186 +        if (createIncomplete) {
1187 +            checkIncomplete(g);
1188 +            f.completeExceptionally(ex);
1189 +        }
1190 +
1191 +        checkCompletedWithWrappedCFException(g, ex);
1192 +        checkCompletedWithWrappedCFException(f, ex);
1193 +        assertEquals(0, r.invocationCount);
1194 +    }}
1195 +
1196 +    /**
1197 +     * thenAccept result completes exceptionally if action does
1198 +     */
1199 +    public void testThenAccept_actionFailed() {
1200 +        for (ExecutionMode m : ExecutionMode.values())
1201 +        for (boolean createIncomplete : new boolean[] { true, false })
1202 +        for (Integer v1 : new Integer[] { 1, null })
1203 +    {
1204 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1205 +        final FailingConsumer r = new FailingConsumer();
1206 +        if (!createIncomplete) f.complete(v1);
1207 +        final CompletableFuture<Void> g = f.thenAccept(r);
1208 +        if (createIncomplete) {
1209 +            checkIncomplete(g);
1210 +            f.complete(v1);
1211 +        }
1212 +
1213 +        checkCompletedWithWrappedCFException(g);
1214 +        checkCompletedNormally(f, v1);
1215 +    }}
1216 +
1217 +    /**
1218 +     * thenAccept result completes exceptionally if source cancelled
1219 +     */
1220 +    public void testThenAccept_sourceCancelled() {
1221 +        for (ExecutionMode m : ExecutionMode.values())
1222 +        for (boolean createIncomplete : new boolean[] { true, false })
1223 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1224 +    {
1225 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1226 +        final IncAction r = new IncAction();
1227 +        if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
1228 +        final CompletableFuture<Void> g = f.thenAccept(r);
1229 +        if (createIncomplete) {
1230 +            checkIncomplete(g);
1231 +            assertTrue(f.cancel(mayInterruptIfRunning));
1232 +        }
1233 +
1234 +        checkCompletedWithWrappedCancellationException(g);
1235 +        checkCancelled(f);
1236 +        assertEquals(0, r.invocationCount);
1237 +    }}
1238 +
1239 +    /**
1240 +     * thenCombine result completes normally after normal completion
1241 +     * of sources
1242 +     */
1243 +    public void testThenCombine_normalCompletion() {
1244 +        for (ExecutionMode m : ExecutionMode.values())
1245 +        for (boolean createIncomplete : new boolean[] { true, false })
1246 +        for (boolean fFirst : new boolean[] { true, false })
1247 +        for (Integer v1 : new Integer[] { 1, null })
1248 +        for (Integer v2 : new Integer[] { 2, null })
1249 +    {
1250 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1251 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1252 +        final SubtractFunction r = new SubtractFunction();
1253 +
1254 +        if (fFirst) f.complete(v1); else g.complete(v2);
1255 +        if (!createIncomplete)
1256 +            if (!fFirst) f.complete(v1); else g.complete(v2);
1257 +        final CompletableFuture<Integer> h = m.thenCombine(f, g, r);
1258 +        if (createIncomplete) {
1259 +            checkIncomplete(h);
1260 +            assertEquals(0, r.invocationCount);
1261 +            if (!fFirst) f.complete(v1); else g.complete(v2);
1262 +        }
1263 +
1264 +        checkCompletedNormally(h, subtract(v1, v2));
1265 +        checkCompletedNormally(f, v1);
1266 +        checkCompletedNormally(g, v2);
1267 +        assertEquals(1, r.invocationCount);
1268 +    }}
1269 +
1270 +    /**
1271 +     * thenCombine result completes exceptionally after exceptional
1272 +     * completion of either source
1273 +     */
1274 +    public void testThenCombine_exceptionalCompletion1() {
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 CompletableFuture<Integer> h = m.thenCombine(f, g, r);
1282 +        final CFException ex = new CFException();
1283 +
1284 +        f.completeExceptionally(ex);
1285 +        checkIncomplete(h);
1286 +        g.complete(v1);
1287 +
1288 +        checkCompletedWithWrappedCFException(h, ex);
1289 +        checkCompletedWithWrappedCFException(f, ex);
1290 +        assertEquals(0, r.invocationCount);
1291 +        checkCompletedNormally(g, v1);
1292 +    }}
1293 +
1294 +    public void testThenCombine_exceptionalCompletion2() {
1295 +        for (ExecutionMode m : ExecutionMode.values())
1296 +        for (Integer v1 : new Integer[] { 1, null })
1297 +    {
1298 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1299 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1300 +        final SubtractFunction r = new SubtractFunction();
1301 +        final CompletableFuture<Integer> h = m.thenCombine(f, g, r);
1302 +        final CFException ex = new CFException();
1303 +
1304 +        g.completeExceptionally(ex);
1305 +        checkIncomplete(h);
1306 +        f.complete(v1);
1307 +
1308 +        checkCompletedWithWrappedCFException(h, ex);
1309 +        checkCompletedWithWrappedCFException(g, ex);
1310 +        assertEquals(0, r.invocationCount);
1311 +        checkCompletedNormally(f, v1);
1312 +    }}
1313 +
1314 +    public void testThenCombine_exceptionalCompletion3() {
1315 +        for (ExecutionMode m : ExecutionMode.values())
1316 +        for (Integer v1 : new Integer[] { 1, null })
1317 +    {
1318 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1319 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1320 +        final SubtractFunction r = new SubtractFunction();
1321 +        final CFException ex = new CFException();
1322 +
1323 +        g.completeExceptionally(ex);
1324 +        f.complete(v1);
1325 +        final CompletableFuture<Integer> h = m.thenCombine(f, g, r);
1326 +
1327 +        checkCompletedWithWrappedCFException(h, ex);
1328 +        checkCompletedWithWrappedCFException(g, ex);
1329 +        assertEquals(0, r.invocationCount);
1330 +        checkCompletedNormally(f, v1);
1331 +    }}
1332 +
1333 +    public void testThenCombine_exceptionalCompletion4() {
1334 +        for (ExecutionMode m : ExecutionMode.values())
1335 +        for (Integer v1 : new Integer[] { 1, null })
1336 +    {
1337 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1338 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1339 +        final SubtractFunction r = new SubtractFunction();
1340 +        final CFException ex = new CFException();
1341 +
1342 +        f.completeExceptionally(ex);
1343 +        g.complete(v1);
1344 +        final CompletableFuture<Integer> h = m.thenCombine(f, g, r);
1345 +
1346 +        checkCompletedWithWrappedCFException(h, ex);
1347 +        checkCompletedWithWrappedCFException(f, ex);
1348 +        assertEquals(0, r.invocationCount);
1349 +        checkCompletedNormally(g, v1);
1350 +    }}
1351 +
1352 +    /**
1353 +     * thenCombine result completes exceptionally if action does
1354 +     */
1355 +    public void testThenCombine_actionFailed1() {
1356 +        for (ExecutionMode m : ExecutionMode.values())
1357 +        for (Integer v1 : new Integer[] { 1, null })
1358 +        for (Integer v2 : new Integer[] { 2, null })
1359 +    {
1360 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1361 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1362 +        final FailingBiFunction r = new FailingBiFunction();
1363 +        final CompletableFuture<Integer> h = m.thenCombine(f, g, r);
1364 +
1365 +        f.complete(v1);
1366 +        checkIncomplete(h);
1367 +        g.complete(v2);
1368 +
1369 +        checkCompletedWithWrappedCFException(h);
1370 +        checkCompletedNormally(f, v1);
1371 +        checkCompletedNormally(g, v2);
1372 +    }}
1373 +
1374 +    public void testThenCombine_actionFailed2() {
1375 +        for (ExecutionMode m : ExecutionMode.values())
1376 +        for (Integer v1 : new Integer[] { 1, null })
1377 +        for (Integer v2 : new Integer[] { 2, null })
1378 +    {
1379 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1380 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1381 +        final FailingBiFunction r = new FailingBiFunction();
1382 +        final CompletableFuture<Integer> h = m.thenCombine(f, g, r);
1383 +
1384 +        g.complete(v2);
1385 +        checkIncomplete(h);
1386 +        f.complete(v1);
1387 +
1388 +        checkCompletedWithWrappedCFException(h);
1389 +        checkCompletedNormally(f, v1);
1390 +        checkCompletedNormally(g, v2);
1391 +    }}
1392 +
1393 +    /**
1394 +     * thenCombine result completes exceptionally if either source cancelled
1395 +     */
1396 +    public void testThenCombine_sourceCancelled1() {
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 +        final CompletableFuture<Integer> h = m.thenCombine(f, g, r);
1405 +
1406 +        assertTrue(f.cancel(mayInterruptIfRunning));
1407 +        checkIncomplete(h);
1408 +        g.complete(v1);
1409 +
1410 +        checkCompletedWithWrappedCancellationException(h);
1411 +        checkCancelled(f);
1412 +        assertEquals(0, r.invocationCount);
1413 +        checkCompletedNormally(g, v1);
1414 +    }}
1415 +
1416 +    public void testThenCombine_sourceCancelled2() {
1417 +        for (ExecutionMode m : ExecutionMode.values())
1418 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1419 +        for (Integer v1 : new Integer[] { 1, null })
1420 +    {
1421 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1422 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1423 +        final SubtractFunction r = new SubtractFunction();
1424 +        final CompletableFuture<Integer> h = m.thenCombine(f, g, r);
1425 +
1426 +        assertTrue(g.cancel(mayInterruptIfRunning));
1427 +        checkIncomplete(h);
1428 +        f.complete(v1);
1429 +
1430 +        checkCompletedWithWrappedCancellationException(h);
1431 +        checkCancelled(g);
1432 +        assertEquals(0, r.invocationCount);
1433 +        checkCompletedNormally(f, v1);
1434 +    }}
1435 +
1436 +    public void testThenCombine_sourceCancelled3() {
1437 +        for (ExecutionMode m : ExecutionMode.values())
1438 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1439 +        for (Integer v1 : new Integer[] { 1, null })
1440 +    {
1441 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1442 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1443 +        final SubtractFunction r = new SubtractFunction();
1444 +
1445 +        assertTrue(g.cancel(mayInterruptIfRunning));
1446 +        f.complete(v1);
1447 +        final CompletableFuture<Integer> h = m.thenCombine(f, g, r);
1448 +
1449 +        checkCompletedWithWrappedCancellationException(h);
1450 +        checkCancelled(g);
1451 +        assertEquals(0, r.invocationCount);
1452 +        checkCompletedNormally(f, v1);
1453 +    }}
1454 +
1455 +    public void testThenCombine_sourceCancelled4() {
1456 +        for (ExecutionMode m : ExecutionMode.values())
1457 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1458 +        for (Integer v1 : new Integer[] { 1, null })
1459 +    {
1460 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1461 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1462 +        final SubtractFunction r = new SubtractFunction();
1463 +
1464 +        assertTrue(f.cancel(mayInterruptIfRunning));
1465 +        g.complete(v1);
1466 +        final CompletableFuture<Integer> h = m.thenCombine(f, g, r);
1467 +
1468 +        checkCompletedWithWrappedCancellationException(h);
1469 +        checkCancelled(f);
1470 +        assertEquals(0, r.invocationCount);
1471 +        checkCompletedNormally(g, v1);
1472 +    }}
1473 +
1474 +    /**
1475 +     * thenAcceptBoth result completes normally after normal
1476 +     * completion of sources
1477 +     */
1478 +    public void testThenAcceptBoth_normalCompletion1() {
1479 +        for (ExecutionMode m : ExecutionMode.values())
1480 +        for (Integer v1 : new Integer[] { 1, null })
1481 +        for (Integer v2 : new Integer[] { 2, null })
1482 +    {
1483 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1484 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1485 +        final SubtractAction r = new SubtractAction();
1486 +        final CompletableFuture<Void> h = m.thenAcceptBoth(f, g, r);
1487 +
1488 +        f.complete(v1);
1489 +        checkIncomplete(h);
1490 +        assertEquals(0, r.invocationCount);
1491 +        g.complete(v2);
1492 +
1493 +        checkCompletedNormally(h, null);
1494 +        assertEquals(subtract(v1, v2), r.value);
1495 +        checkCompletedNormally(f, v1);
1496 +        checkCompletedNormally(g, v2);
1497 +    }}
1498 +
1499 +    public void testThenAcceptBoth_normalCompletion2() {
1500 +        for (ExecutionMode m : ExecutionMode.values())
1501 +        for (Integer v1 : new Integer[] { 1, null })
1502 +        for (Integer v2 : new Integer[] { 2, null })
1503 +    {
1504 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1505 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1506 +        final SubtractAction r = new SubtractAction();
1507 +        final CompletableFuture<Void> h = m.thenAcceptBoth(f, g, r);
1508 +
1509 +        g.complete(v2);
1510 +        checkIncomplete(h);
1511 +        assertEquals(0, r.invocationCount);
1512 +        f.complete(v1);
1513 +
1514 +        checkCompletedNormally(h, null);
1515 +        assertEquals(subtract(v1, v2), r.value);
1516 +        checkCompletedNormally(f, v1);
1517 +        checkCompletedNormally(g, v2);
1518 +    }}
1519 +
1520 +    public void testThenAcceptBoth_normalCompletion3() {
1521 +        for (ExecutionMode m : ExecutionMode.values())
1522 +        for (Integer v1 : new Integer[] { 1, null })
1523 +        for (Integer v2 : new Integer[] { 2, null })
1524 +    {
1525 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1526 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1527 +        final SubtractAction r = new SubtractAction();
1528 +
1529 +        g.complete(v2);
1530 +        f.complete(v1);
1531 +        final CompletableFuture<Void> h = m.thenAcceptBoth(f, g, r);
1532 +
1533 +        checkCompletedNormally(h, null);
1534 +        assertEquals(subtract(v1, v2), r.value);
1535 +        checkCompletedNormally(f, v1);
1536 +        checkCompletedNormally(g, v2);
1537 +    }}
1538 +
1539 +    public void testThenAcceptBoth_normalCompletion4() {
1540 +        for (ExecutionMode m : ExecutionMode.values())
1541 +        for (Integer v1 : new Integer[] { 1, null })
1542 +        for (Integer v2 : new Integer[] { 2, null })
1543 +    {
1544 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1545 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1546 +        final SubtractAction r = new SubtractAction();
1547 +
1548 +        f.complete(v1);
1549 +        g.complete(v2);
1550 +        final CompletableFuture<Void> h = m.thenAcceptBoth(f, g, r);
1551 +
1552 +        checkCompletedNormally(h, null);
1553 +        assertEquals(subtract(v1, v2), r.value);
1554 +        checkCompletedNormally(f, v1);
1555 +        checkCompletedNormally(g, v2);
1556 +    }}
1557 +
1558 +    /**
1559 +     * thenAcceptBoth result completes exceptionally after exceptional
1560 +     * completion of either source
1561 +     */
1562 +    public void testThenAcceptBoth_exceptionalCompletion1() {
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 CompletableFuture<Void> h = m.thenAcceptBoth(f, g, r);
1570 +        final CFException ex = new CFException();
1571 +
1572 +        f.completeExceptionally(ex);
1573 +        checkIncomplete(h);
1574 +        g.complete(v1);
1575 +
1576 +        checkCompletedWithWrappedCFException(h, ex);
1577 +        checkCompletedWithWrappedCFException(f, ex);
1578 +        assertEquals(0, r.invocationCount);
1579 +        checkCompletedNormally(g, v1);
1580 +    }}
1581 +
1582 +    public void testThenAcceptBoth_exceptionalCompletion2() {
1583 +        for (ExecutionMode m : ExecutionMode.values())
1584 +        for (Integer v1 : new Integer[] { 1, null })
1585 +    {
1586 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1587 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1588 +        final SubtractAction r = new SubtractAction();
1589 +        final CompletableFuture<Void> h = m.thenAcceptBoth(f, g, r);
1590 +        final CFException ex = new CFException();
1591 +
1592 +        g.completeExceptionally(ex);
1593 +        checkIncomplete(h);
1594 +        f.complete(v1);
1595 +
1596 +        checkCompletedWithWrappedCFException(h, ex);
1597 +        checkCompletedWithWrappedCFException(g, ex);
1598 +        assertEquals(0, r.invocationCount);
1599 +        checkCompletedNormally(f, v1);
1600 +    }}
1601 +
1602 +    public void testThenAcceptBoth_exceptionalCompletion3() {
1603 +        for (ExecutionMode m : ExecutionMode.values())
1604 +        for (Integer v1 : new Integer[] { 1, null })
1605 +    {
1606 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1607 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1608 +        final SubtractAction r = new SubtractAction();
1609 +        final CFException ex = new CFException();
1610 +
1611 +        g.completeExceptionally(ex);
1612 +        f.complete(v1);
1613 +        final CompletableFuture<Void> h = m.thenAcceptBoth(f, g, r);
1614 +
1615 +        checkCompletedWithWrappedCFException(h, ex);
1616 +        checkCompletedWithWrappedCFException(g, ex);
1617 +        assertEquals(0, r.invocationCount);
1618 +        checkCompletedNormally(f, v1);
1619 +    }}
1620 +
1621 +    public void testThenAcceptBoth_exceptionalCompletion4() {
1622 +        for (ExecutionMode m : ExecutionMode.values())
1623 +        for (Integer v1 : new Integer[] { 1, null })
1624 +    {
1625 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1626 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1627 +        final SubtractAction r = new SubtractAction();
1628 +        final CFException ex = new CFException();
1629 +
1630 +        f.completeExceptionally(ex);
1631 +        g.complete(v1);
1632 +        final CompletableFuture<Void> h = m.thenAcceptBoth(f, g, r);
1633 +
1634 +        checkCompletedWithWrappedCFException(h, ex);
1635 +        checkCompletedWithWrappedCFException(f, ex);
1636 +        assertEquals(0, r.invocationCount);
1637 +        checkCompletedNormally(g, v1);
1638 +    }}
1639 +
1640 +    /**
1641 +     * thenAcceptBoth result completes exceptionally if action does
1642 +     */
1643 +    public void testThenAcceptBoth_actionFailed1() {
1644 +        for (ExecutionMode m : ExecutionMode.values())
1645 +        for (Integer v1 : new Integer[] { 1, null })
1646 +        for (Integer v2 : new Integer[] { 2, null })
1647 +    {
1648 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1649 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1650 +        final FailingBiConsumer r = new FailingBiConsumer();
1651 +        final CompletableFuture<Void> h = m.thenAcceptBoth(f, g, r);
1652 +
1653 +        f.complete(v1);
1654 +        checkIncomplete(h);
1655 +        g.complete(v2);
1656 +
1657 +        checkCompletedWithWrappedCFException(h);
1658 +        checkCompletedNormally(f, v1);
1659 +        checkCompletedNormally(g, v2);
1660 +    }}
1661 +
1662 +    public void testThenAcceptBoth_actionFailed2() {
1663 +        for (ExecutionMode m : ExecutionMode.values())
1664 +        for (Integer v1 : new Integer[] { 1, null })
1665 +        for (Integer v2 : new Integer[] { 2, null })
1666 +    {
1667 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1668 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1669 +        final FailingBiConsumer r = new FailingBiConsumer();
1670 +        final CompletableFuture<Void> h = m.thenAcceptBoth(f, g, r);
1671 +
1672 +        g.complete(v2);
1673 +        checkIncomplete(h);
1674 +        f.complete(v1);
1675 +
1676 +        checkCompletedWithWrappedCFException(h);
1677 +        checkCompletedNormally(f, v1);
1678 +        checkCompletedNormally(g, v2);
1679 +    }}
1680 +
1681 +    /**
1682 +     * thenAcceptBoth result completes exceptionally if either source cancelled
1683 +     */
1684 +    public void testThenAcceptBoth_sourceCancelled1() {
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 +        final CompletableFuture<Void> h = m.thenAcceptBoth(f, g, r);
1693 +
1694 +        assertTrue(f.cancel(mayInterruptIfRunning));
1695 +        checkIncomplete(h);
1696 +        g.complete(v1);
1697 +
1698 +        checkCompletedWithWrappedCancellationException(h);
1699 +        checkCancelled(f);
1700 +        assertEquals(0, r.invocationCount);
1701 +        checkCompletedNormally(g, v1);
1702 +    }}
1703 +
1704 +    public void testThenAcceptBoth_sourceCancelled2() {
1705 +        for (ExecutionMode m : ExecutionMode.values())
1706 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1707 +        for (Integer v1 : new Integer[] { 1, null })
1708 +    {
1709 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1710 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1711 +        final SubtractAction r = new SubtractAction();
1712 +        final CompletableFuture<Void> h = m.thenAcceptBoth(f, g, r);
1713 +
1714 +        assertTrue(g.cancel(mayInterruptIfRunning));
1715 +        checkIncomplete(h);
1716 +        f.complete(v1);
1717 +
1718 +        checkCompletedWithWrappedCancellationException(h);
1719 +        checkCancelled(g);
1720 +        assertEquals(0, r.invocationCount);
1721 +        checkCompletedNormally(f, v1);
1722 +    }}
1723 +
1724 +    public void testThenAcceptBoth_sourceCancelled3() {
1725 +        for (ExecutionMode m : ExecutionMode.values())
1726 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1727 +        for (Integer v1 : new Integer[] { 1, null })
1728 +    {
1729 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1730 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1731 +        final SubtractAction r = new SubtractAction();
1732 +
1733 +        assertTrue(g.cancel(mayInterruptIfRunning));
1734 +        f.complete(v1);
1735 +        final CompletableFuture<Void> h = m.thenAcceptBoth(f, g, r);
1736 +
1737 +        checkCompletedWithWrappedCancellationException(h);
1738 +        checkCancelled(g);
1739 +        assertEquals(0, r.invocationCount);
1740 +        checkCompletedNormally(f, v1);
1741 +    }}
1742 +
1743 +    public void testThenAcceptBoth_sourceCancelled4() {
1744 +        for (ExecutionMode m : ExecutionMode.values())
1745 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1746 +        for (Integer v1 : new Integer[] { 1, null })
1747 +    {
1748 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1749 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1750 +        final SubtractAction r = new SubtractAction();
1751 +
1752 +        assertTrue(f.cancel(mayInterruptIfRunning));
1753 +        g.complete(v1);
1754 +        final CompletableFuture<Void> h = m.thenAcceptBoth(f, g, r);
1755 +
1756 +        checkCompletedWithWrappedCancellationException(h);
1757 +        checkCancelled(f);
1758 +        assertEquals(0, r.invocationCount);
1759 +        checkCompletedNormally(g, v1);
1760 +    }}
1761 +
1762 +    /**
1763 +     * runAfterBoth result completes normally after normal
1764 +     * completion of sources
1765 +     */
1766 +    public void testRunAfterBoth_normalCompletion1() {
1767 +        for (ExecutionMode m : ExecutionMode.values())
1768 +        for (Integer v1 : new Integer[] { 1, null })
1769 +        for (Integer v2 : new Integer[] { 2, null })
1770 +    {
1771 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1772 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1773 +        final Noop r = new Noop();
1774 +        final CompletableFuture<Void> h = m.runAfterBoth(f, g, r);
1775 +
1776 +        f.complete(v1);
1777 +        checkIncomplete(h);
1778 +        assertEquals(0, r.invocationCount);
1779 +        g.complete(v2);
1780 +
1781 +        checkCompletedNormally(h, null);
1782 +        assertEquals(1, r.invocationCount);
1783 +        checkCompletedNormally(f, v1);
1784 +        checkCompletedNormally(g, v2);
1785 +    }}
1786 +
1787 +    public void testRunAfterBoth_normalCompletion2() {
1788 +        for (ExecutionMode m : ExecutionMode.values())
1789 +        for (Integer v1 : new Integer[] { 1, null })
1790 +        for (Integer v2 : new Integer[] { 2, null })
1791 +    {
1792 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1793 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1794 +        final Noop r = new Noop();
1795 +        final CompletableFuture<Void> h = m.runAfterBoth(f, g, r);
1796 +
1797 +        g.complete(v2);
1798 +        checkIncomplete(h);
1799 +        assertEquals(0, r.invocationCount);
1800 +        f.complete(v1);
1801 +
1802 +        checkCompletedNormally(h, null);
1803 +        assertEquals(1, r.invocationCount);
1804 +        checkCompletedNormally(f, v1);
1805 +        checkCompletedNormally(g, v2);
1806 +    }}
1807 +
1808 +    public void testRunAfterBoth_normalCompletion3() {
1809 +        for (ExecutionMode m : ExecutionMode.values())
1810 +        for (Integer v1 : new Integer[] { 1, null })
1811 +        for (Integer v2 : new Integer[] { 2, null })
1812 +    {
1813 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1814 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1815 +        final Noop r = new Noop();
1816 +
1817 +        g.complete(v2);
1818 +        f.complete(v1);
1819 +        final CompletableFuture<Void> h = m.runAfterBoth(f, g, r);
1820 +
1821 +        checkCompletedNormally(h, null);
1822 +        assertEquals(1, r.invocationCount);
1823 +        checkCompletedNormally(f, v1);
1824 +        checkCompletedNormally(g, v2);
1825 +    }}
1826 +
1827 +    public void testRunAfterBoth_normalCompletion4() {
1828 +        for (ExecutionMode m : ExecutionMode.values())
1829 +        for (Integer v1 : new Integer[] { 1, null })
1830 +        for (Integer v2 : new Integer[] { 2, null })
1831 +    {
1832 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1833 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1834 +        final Noop r = new Noop();
1835 +
1836 +        f.complete(v1);
1837 +        g.complete(v2);
1838 +        final CompletableFuture<Void> h = m.runAfterBoth(f, g, r);
1839 +
1840 +        checkCompletedNormally(h, null);
1841 +        assertEquals(1, r.invocationCount);
1842 +        checkCompletedNormally(f, v1);
1843 +        checkCompletedNormally(g, v2);
1844 +    }}
1845 +
1846 +    /**
1847 +     * runAfterBoth result completes exceptionally after exceptional
1848 +     * completion of either source
1849 +     */
1850 +    public void testRunAfterBoth_exceptionalCompletion1() {
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 CompletableFuture<Void> h = m.runAfterBoth(f, g, r);
1858 +        final CFException ex = new CFException();
1859 +
1860 +        f.completeExceptionally(ex);
1861 +        checkIncomplete(h);
1862 +        g.complete(v1);
1863 +
1864 +        checkCompletedWithWrappedCFException(h, ex);
1865 +        checkCompletedWithWrappedCFException(f, ex);
1866 +        assertEquals(0, r.invocationCount);
1867 +        checkCompletedNormally(g, v1);
1868 +    }}
1869 +
1870 +    public void testRunAfterBoth_exceptionalCompletion2() {
1871 +        for (ExecutionMode m : ExecutionMode.values())
1872 +        for (Integer v1 : new Integer[] { 1, null })
1873 +    {
1874 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1875 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1876 +        final Noop r = new Noop();
1877 +        final CompletableFuture<Void> h = m.runAfterBoth(f, g, r);
1878 +        final CFException ex = new CFException();
1879 +
1880 +        g.completeExceptionally(ex);
1881 +        checkIncomplete(h);
1882 +        f.complete(v1);
1883 +
1884 +        checkCompletedWithWrappedCFException(h, ex);
1885 +        checkCompletedWithWrappedCFException(g, ex);
1886 +        assertEquals(0, r.invocationCount);
1887 +        checkCompletedNormally(f, v1);
1888 +    }}
1889 +
1890 +    public void testRunAfterBoth_exceptionalCompletion3() {
1891 +        for (ExecutionMode m : ExecutionMode.values())
1892 +        for (Integer v1 : new Integer[] { 1, null })
1893 +    {
1894 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1895 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1896 +        final Noop r = new Noop();
1897 +        final CFException ex = new CFException();
1898 +
1899 +        g.completeExceptionally(ex);
1900 +        f.complete(v1);
1901 +        final CompletableFuture<Void> h = m.runAfterBoth(f, g, r);
1902 +
1903 +        checkCompletedWithWrappedCFException(h, ex);
1904 +        checkCompletedWithWrappedCFException(g, ex);
1905 +        assertEquals(0, r.invocationCount);
1906 +        checkCompletedNormally(f, v1);
1907 +    }}
1908 +
1909 +    public void testRunAfterBoth_exceptionalCompletion4() {
1910 +        for (ExecutionMode m : ExecutionMode.values())
1911 +        for (Integer v1 : new Integer[] { 1, null })
1912 +    {
1913 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1914 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1915 +        final Noop r = new Noop();
1916 +        final CFException ex = new CFException();
1917 +
1918 +        f.completeExceptionally(ex);
1919 +        g.complete(v1);
1920 +        final CompletableFuture<Void> h = m.runAfterBoth(f, g, r);
1921 +
1922 +        checkCompletedWithWrappedCFException(h, ex);
1923 +        checkCompletedWithWrappedCFException(f, ex);
1924 +        assertEquals(0, r.invocationCount);
1925 +        checkCompletedNormally(g, v1);
1926 +    }}
1927 +
1928 +    /**
1929 +     * runAfterBoth result completes exceptionally if action does
1930 +     */
1931 +    public void testRunAfterBoth_actionFailed1() {
1932 +        for (ExecutionMode m : ExecutionMode.values())
1933 +        for (Integer v1 : new Integer[] { 1, null })
1934 +        for (Integer v2 : new Integer[] { 2, null })
1935 +    {
1936 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1937 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1938 +        final FailingRunnable r = new FailingRunnable();
1939 +        final CompletableFuture<Void> h = m.runAfterBoth(f, g, r);
1940 +
1941 +        f.complete(v1);
1942 +        checkIncomplete(h);
1943 +        g.complete(v2);
1944 +
1945 +        checkCompletedWithWrappedCFException(h);
1946 +        checkCompletedNormally(f, v1);
1947 +        checkCompletedNormally(g, v2);
1948 +    }}
1949 +
1950 +    public void testRunAfterBoth_actionFailed2() {
1951 +        for (ExecutionMode m : ExecutionMode.values())
1952 +        for (Integer v1 : new Integer[] { 1, null })
1953 +        for (Integer v2 : new Integer[] { 2, null })
1954 +    {
1955 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1956 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1957 +        final FailingRunnable r = new FailingRunnable();
1958 +        final CompletableFuture<Void> h = m.runAfterBoth(f, g, r);
1959 +
1960 +        g.complete(v2);
1961 +        checkIncomplete(h);
1962 +        f.complete(v1);
1963 +
1964 +        checkCompletedWithWrappedCFException(h);
1965 +        checkCompletedNormally(f, v1);
1966 +        checkCompletedNormally(g, v2);
1967 +    }}
1968 +
1969 +    /**
1970 +     * runAfterBoth result completes exceptionally if either source cancelled
1971 +     */
1972 +    public void testRunAfterBoth_sourceCancelled1() {
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 +        final CompletableFuture<Void> h = m.runAfterBoth(f, g, r);
1981 +
1982 +        assertTrue(f.cancel(mayInterruptIfRunning));
1983 +        checkIncomplete(h);
1984 +        g.complete(v1);
1985 +
1986 +        checkCompletedWithWrappedCancellationException(h);
1987 +        checkCancelled(f);
1988 +        assertEquals(0, r.invocationCount);
1989 +        checkCompletedNormally(g, v1);
1990 +    }}
1991 +
1992 +    public void testRunAfterBoth_sourceCancelled2() {
1993 +        for (ExecutionMode m : ExecutionMode.values())
1994 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1995 +        for (Integer v1 : new Integer[] { 1, null })
1996 +    {
1997 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1998 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1999 +        final Noop r = new Noop();
2000 +        final CompletableFuture<Void> h = m.runAfterBoth(f, g, r);
2001 +
2002 +        assertTrue(g.cancel(mayInterruptIfRunning));
2003 +        checkIncomplete(h);
2004 +        f.complete(v1);
2005 +
2006 +        checkCompletedWithWrappedCancellationException(h);
2007 +        checkCancelled(g);
2008 +        assertEquals(0, r.invocationCount);
2009 +        checkCompletedNormally(f, v1);
2010 +    }}
2011 +
2012 +    public void testRunAfterBoth_sourceCancelled3() {
2013 +        for (ExecutionMode m : ExecutionMode.values())
2014 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2015 +        for (Integer v1 : new Integer[] { 1, null })
2016 +    {
2017 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2018 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2019 +        final Noop r = new Noop();
2020 +
2021 +        assertTrue(g.cancel(mayInterruptIfRunning));
2022 +        f.complete(v1);
2023 +        final CompletableFuture<Void> h = m.runAfterBoth(f, g, r);
2024 +
2025 +        checkCompletedWithWrappedCancellationException(h);
2026 +        checkCancelled(g);
2027 +        assertEquals(0, r.invocationCount);
2028 +        checkCompletedNormally(f, v1);
2029 +    }}
2030 +
2031 +    public void testRunAfterBoth_sourceCancelled4() {
2032 +        for (ExecutionMode m : ExecutionMode.values())
2033 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2034 +        for (Integer v1 : new Integer[] { 1, null })
2035 +    {
2036 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2037 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2038 +        final Noop r = new Noop();
2039 +
2040 +        assertTrue(f.cancel(mayInterruptIfRunning));
2041 +        g.complete(v1);
2042 +        final CompletableFuture<Void> h = m.runAfterBoth(f, g, r);
2043 +
2044 +        checkCompletedWithWrappedCancellationException(h);
2045 +        checkCancelled(f);
2046 +        assertEquals(0, r.invocationCount);
2047 +        checkCompletedNormally(g, v1);
2048 +    }}
2049 +
2050 +    /**
2051 +     * applyToEither result completes normally after normal completion
2052 +     * of either source
2053 +     */
2054 +    public void testApplyToEither_normalCompletion1() {
2055 +        for (ExecutionMode m : ExecutionMode.values())
2056 +        for (Integer v1 : new Integer[] { 1, null })
2057 +        for (Integer v2 : new Integer[] { 2, null })
2058 +    {
2059 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2060 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2061 +        final IncFunction r = new IncFunction();
2062 +        final CompletableFuture<Integer> h = m.applyToEither(f, g, r);
2063 +
2064 +        f.complete(v1);
2065 +        checkCompletedNormally(h, inc(v1));
2066 +        g.complete(v2);
2067 +
2068 +        checkCompletedNormally(f, v1);
2069 +        checkCompletedNormally(g, v2);
2070 +        checkCompletedNormally(h, inc(v1));
2071 +    }}
2072 +
2073 +    public void testApplyToEither_normalCompletion2() {
2074 +        for (ExecutionMode m : ExecutionMode.values())
2075 +        for (Integer v1 : new Integer[] { 1, null })
2076 +        for (Integer v2 : new Integer[] { 2, null })
2077 +    {
2078 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2079 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2080 +        final IncFunction r = new IncFunction();
2081 +        final CompletableFuture<Integer> h = m.applyToEither(f, g, r);
2082 +
2083 +        g.complete(v2);
2084 +        checkCompletedNormally(h, inc(v2));
2085 +        f.complete(v1);
2086 +
2087 +        checkCompletedNormally(f, v1);
2088 +        checkCompletedNormally(g, v2);
2089 +        checkCompletedNormally(h, inc(v2));
2090 +        }}
2091 +
2092 +    public void testApplyToEither_normalCompletion3() {
2093 +        for (ExecutionMode m : ExecutionMode.values())
2094 +        for (Integer v1 : new Integer[] { 1, null })
2095 +        for (Integer v2 : new Integer[] { 2, null })
2096 +    {
2097 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2098 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2099 +        final IncFunction r = new IncFunction();
2100 +
2101 +        f.complete(v1);
2102 +        g.complete(v2);
2103 +        final CompletableFuture<Integer> h = m.applyToEither(f, g, r);
2104 +
2105 +        checkCompletedNormally(f, v1);
2106 +        checkCompletedNormally(g, v2);
2107 +
2108 +        // unspecified behavior
2109 +        assertTrue(Objects.equals(h.join(), inc(v1)) ||
2110 +                   Objects.equals(h.join(), inc(v2)));
2111 +        assertEquals(1, r.invocationCount);
2112 +    }}
2113 +
2114 +    /**
2115 +     * applyToEither result completes exceptionally after exceptional
2116 +     * completion of either source
2117 +     */
2118 +    public void testApplyToEither_exceptionalCompletion1() {
2119 +        for (ExecutionMode m : ExecutionMode.values())
2120 +        for (Integer v1 : new Integer[] { 1, null })
2121 +    {
2122 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2123 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2124 +        final IncFunction r = new IncFunction();
2125 +        final CompletableFuture<Integer> h = m.applyToEither(f, g, r);
2126 +        final CFException ex = new CFException();
2127 +
2128 +        f.completeExceptionally(ex);
2129 +        checkCompletedWithWrappedCFException(h, ex);
2130 +        g.complete(v1);
2131 +
2132 +        assertEquals(0, r.invocationCount);
2133 +        checkCompletedNormally(g, v1);
2134 +        checkCompletedWithWrappedCFException(f, ex);
2135 +        checkCompletedWithWrappedCFException(h, ex);
2136 +    }}
2137 +
2138 +    public void testApplyToEither_exceptionalCompletion2() {
2139 +        for (ExecutionMode m : ExecutionMode.values())
2140 +        for (Integer v1 : new Integer[] { 1, null })
2141 +    {
2142 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2143 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2144 +        final IncFunction r = new IncFunction();
2145 +        final CompletableFuture<Integer> h = m.applyToEither(f, g, r);
2146 +        final CFException ex = new CFException();
2147 +
2148 +        g.completeExceptionally(ex);
2149 +        checkCompletedWithWrappedCFException(h, ex);
2150 +        f.complete(v1);
2151 +
2152 +        assertEquals(0, r.invocationCount);
2153 +        checkCompletedNormally(f, v1);
2154 +        checkCompletedWithWrappedCFException(g, ex);
2155 +        checkCompletedWithWrappedCFException(h, ex);
2156 +    }}
2157 +
2158 +    public void testApplyToEither_exceptionalCompletion3() {
2159 +        for (ExecutionMode m : ExecutionMode.values())
2160 +        for (Integer v1 : new Integer[] { 1, null })
2161 +    {
2162 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2163 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2164 +        final IncFunction r = new IncFunction();
2165 +        final CFException ex = new CFException();
2166 +
2167 +        g.completeExceptionally(ex);
2168 +        f.complete(v1);
2169 +        final CompletableFuture<Integer> h = m.applyToEither(f, g, r);
2170 +
2171 +        // unspecified behavior
2172 +        Integer v;
2173 +        try {
2174 +            assertEquals(inc(v1), h.join());
2175 +            assertEquals(1, r.invocationCount);
2176 +        } catch (CompletionException ok) {
2177 +            checkCompletedWithWrappedCFException(h, ex);
2178 +            assertEquals(0, r.invocationCount);
2179 +        }
2180 +
2181 +        checkCompletedWithWrappedCFException(g, ex);
2182 +        checkCompletedNormally(f, v1);
2183 +    }}
2184 +
2185 +    public void testApplyToEither_exceptionalCompletion4() {
2186 +        for (ExecutionMode m : ExecutionMode.values())
2187 +        for (Integer v1 : new Integer[] { 1, null })
2188 +    {
2189 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2190 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2191 +        final IncFunction r = new IncFunction();
2192 +        final CFException ex = new CFException();
2193 +
2194 +        f.completeExceptionally(ex);
2195 +        g.complete(v1);
2196 +        final CompletableFuture<Integer> h = m.applyToEither(f, g, r);
2197 +
2198 +        // unspecified behavior
2199 +        Integer v;
2200 +        try {
2201 +            assertEquals(inc(v1), h.join());
2202 +            assertEquals(1, r.invocationCount);
2203 +        } catch (CompletionException ok) {
2204 +            checkCompletedWithWrappedCFException(h, ex);
2205 +            assertEquals(0, r.invocationCount);
2206 +        }
2207 +
2208 +        checkCompletedWithWrappedCFException(f, ex);
2209 +        checkCompletedNormally(g, v1);
2210 +    }}
2211 +
2212 +    /**
2213 +     * applyToEither result completes exceptionally if action does
2214 +     */
2215 +    public void testApplyToEither_actionFailed1() {
2216 +        for (ExecutionMode m : ExecutionMode.values())
2217 +        for (Integer v1 : new Integer[] { 1, null })
2218 +        for (Integer v2 : new Integer[] { 2, null })
2219 +    {
2220 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2221 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2222 +        final FailingFunction r = new FailingFunction();
2223 +        final CompletableFuture<Integer> h = m.applyToEither(f, g, r);
2224 +
2225 +        f.complete(v1);
2226 +        checkCompletedWithWrappedCFException(h);
2227 +        g.complete(v2);
2228 +        checkCompletedNormally(f, v1);
2229 +        checkCompletedNormally(g, v2);
2230 +    }}
2231 +
2232 +    public void testApplyToEither_actionFailed2() {
2233 +        for (ExecutionMode m : ExecutionMode.values())
2234 +        for (Integer v1 : new Integer[] { 1, null })
2235 +        for (Integer v2 : new Integer[] { 2, null })
2236 +    {
2237 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2238 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2239 +        final FailingFunction r = new FailingFunction();
2240 +        final CompletableFuture<Integer> h = m.applyToEither(f, g, r);
2241 +
2242 +        g.complete(v2);
2243 +        checkCompletedWithWrappedCFException(h);
2244 +        f.complete(v1);
2245 +        checkCompletedNormally(f, v1);
2246 +        checkCompletedNormally(g, v2);
2247 +    }}
2248 +
2249 +    /**
2250 +     * applyToEither result completes exceptionally if either source cancelled
2251 +     */
2252 +    public void testApplyToEither_sourceCancelled1() {
2253 +        for (ExecutionMode m : ExecutionMode.values())
2254 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2255 +        for (Integer v1 : new Integer[] { 1, null })
2256 +    {
2257 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2258 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2259 +        final IncFunction r = new IncFunction();
2260 +        final CompletableFuture<Integer> h = m.applyToEither(f, g, r);
2261 +
2262 +        assertTrue(f.cancel(mayInterruptIfRunning));
2263 +        checkCompletedWithWrappedCancellationException(h);
2264 +        g.complete(v1);
2265 +
2266 +        checkCancelled(f);
2267 +        assertEquals(0, r.invocationCount);
2268 +        checkCompletedNormally(g, v1);
2269 +        checkCompletedWithWrappedCancellationException(h);
2270 +    }}
2271 +
2272 +    public void testApplyToEither_sourceCancelled2() {
2273 +        for (ExecutionMode m : ExecutionMode.values())
2274 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2275 +        for (Integer v1 : new Integer[] { 1, null })
2276 +    {
2277 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2278 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2279 +        final IncFunction r = new IncFunction();
2280 +        final CompletableFuture<Integer> h = m.applyToEither(f, g, r);
2281 +
2282 +        assertTrue(g.cancel(mayInterruptIfRunning));
2283 +        checkCompletedWithWrappedCancellationException(h);
2284 +        f.complete(v1);
2285 +
2286 +        checkCancelled(g);
2287 +        assertEquals(0, r.invocationCount);
2288 +        checkCompletedNormally(f, v1);
2289 +        checkCompletedWithWrappedCancellationException(h);
2290 +    }}
2291 +
2292 +    public void testApplyToEither_sourceCancelled3() {
2293 +        for (ExecutionMode m : ExecutionMode.values())
2294 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2295 +        for (Integer v1 : new Integer[] { 1, null })
2296 +    {
2297 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2298 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2299 +        final IncFunction r = new IncFunction();
2300 +
2301 +        assertTrue(g.cancel(mayInterruptIfRunning));
2302 +        f.complete(v1);
2303 +        final CompletableFuture<Integer> h = m.applyToEither(f, g, r);
2304 +
2305 +        // unspecified behavior
2306 +        Integer v;
2307 +        try {
2308 +            assertEquals(inc(v1), h.join());
2309 +            assertEquals(1, r.invocationCount);
2310 +        } catch (CompletionException ok) {
2311 +            checkCompletedWithWrappedCancellationException(h);
2312 +            assertEquals(0, r.invocationCount);
2313 +        }
2314 +
2315 +        checkCancelled(g);
2316 +        checkCompletedNormally(f, v1);
2317 +    }}
2318 +
2319 +    public void testApplyToEither_sourceCancelled4() {
2320 +        for (ExecutionMode m : ExecutionMode.values())
2321 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2322 +        for (Integer v1 : new Integer[] { 1, null })
2323 +    {
2324 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2325 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2326 +        final IncFunction r = new IncFunction();
2327 +
2328 +        assertTrue(f.cancel(mayInterruptIfRunning));
2329 +        g.complete(v1);
2330 +        final CompletableFuture<Integer> h = m.applyToEither(f, g, r);
2331 +
2332 +        // unspecified behavior
2333 +        Integer v;
2334 +        try {
2335 +            assertEquals(inc(v1), h.join());
2336 +            assertEquals(1, r.invocationCount);
2337 +        } catch (CompletionException ok) {
2338 +            checkCompletedWithWrappedCancellationException(h);
2339 +            assertEquals(0, r.invocationCount);
2340 +        }
2341 +
2342 +        checkCancelled(f);
2343 +        checkCompletedNormally(g, v1);
2344 +    }}
2345 +
2346 +    /**
2347 +     * acceptEither result completes normally after normal completion
2348 +     * of either source
2349 +     */
2350 +    public void testAcceptEither_normalCompletion1() {
2351 +        for (ExecutionMode m : ExecutionMode.values())
2352 +        for (Integer v1 : new Integer[] { 1, null })
2353 +        for (Integer v2 : new Integer[] { 2, null })
2354 +    {
2355 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2356 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2357 +        final IncAction r = new IncAction();
2358 +        final CompletableFuture<Void> h = m.acceptEither(f, g, r);
2359 +
2360 +        f.complete(v1);
2361 +        checkCompletedNormally(h, null);
2362 +        assertEquals(inc(v1), r.value);
2363 +        g.complete(v2);
2364 +
2365 +        checkCompletedNormally(f, v1);
2366 +        checkCompletedNormally(g, v2);
2367 +        checkCompletedNormally(h, null);
2368 +    }}
2369 +
2370 +    public void testAcceptEither_normalCompletion2() {
2371 +        for (ExecutionMode m : ExecutionMode.values())
2372 +        for (Integer v1 : new Integer[] { 1, null })
2373 +        for (Integer v2 : new Integer[] { 2, null })
2374 +    {
2375 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2376 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2377 +        final IncAction r = new IncAction();
2378 +        final CompletableFuture<Void> h = m.acceptEither(f, g, r);
2379 +
2380 +        g.complete(v2);
2381 +        checkCompletedNormally(h, null);
2382 +        assertEquals(inc(v2), r.value);
2383 +        f.complete(v1);
2384 +
2385 +        checkCompletedNormally(f, v1);
2386 +        checkCompletedNormally(g, v2);
2387 +        checkCompletedNormally(h, null);
2388 +    }}
2389 +
2390 +    public void testAcceptEither_normalCompletion3() {
2391 +        for (ExecutionMode m : ExecutionMode.values())
2392 +        for (Integer v1 : new Integer[] { 1, null })
2393 +        for (Integer v2 : new Integer[] { 2, null })
2394 +    {
2395 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2396 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2397 +        final IncAction r = new IncAction();
2398 +
2399 +        f.complete(v1);
2400 +        g.complete(v2);
2401 +        final CompletableFuture<Void> h = m.acceptEither(f, g, r);
2402 +
2403 +        checkCompletedNormally(h, null);
2404 +        checkCompletedNormally(f, v1);
2405 +        checkCompletedNormally(g, v2);
2406 +
2407 +        // unspecified behavior
2408 +        assertTrue(Objects.equals(r.value, inc(v1)) ||
2409 +                   Objects.equals(r.value, inc(v2)));
2410 +    }}
2411 +
2412 +    /**
2413 +     * acceptEither result completes exceptionally after exceptional
2414 +     * completion of either source
2415 +     */
2416 +    public void testAcceptEither_exceptionalCompletion1() {
2417 +        for (ExecutionMode m : ExecutionMode.values())
2418 +        for (Integer v1 : new Integer[] { 1, null })
2419 +    {
2420 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2421 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2422 +        final IncAction r = new IncAction();
2423 +        final CompletableFuture<Void> h = m.acceptEither(f, g, r);
2424 +        final CFException ex = new CFException();
2425 +
2426 +        f.completeExceptionally(ex);
2427 +        checkCompletedWithWrappedCFException(h, ex);
2428 +        g.complete(v1);
2429 +
2430 +        assertEquals(0, r.invocationCount);
2431 +        checkCompletedNormally(g, v1);
2432 +        checkCompletedWithWrappedCFException(f, ex);
2433 +        checkCompletedWithWrappedCFException(h, ex);
2434 +    }}
2435 +
2436 +    public void testAcceptEither_exceptionalCompletion2() {
2437 +        for (ExecutionMode m : ExecutionMode.values())
2438 +        for (Integer v1 : new Integer[] { 1, null })
2439 +    {
2440 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2441 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2442 +        final IncAction r = new IncAction();
2443 +        final CompletableFuture<Void> h = m.acceptEither(f, g, r);
2444 +        final CFException ex = new CFException();
2445 +
2446 +        g.completeExceptionally(ex);
2447 +        checkCompletedWithWrappedCFException(h, ex);
2448 +        f.complete(v1);
2449 +
2450 +        assertEquals(0, r.invocationCount);
2451 +        checkCompletedNormally(f, v1);
2452 +        checkCompletedWithWrappedCFException(g, ex);
2453 +        checkCompletedWithWrappedCFException(h, ex);
2454 +    }}
2455 +
2456 +    public void testAcceptEither_exceptionalCompletion3() {
2457 +        for (ExecutionMode m : ExecutionMode.values())
2458 +        for (Integer v1 : new Integer[] { 1, null })
2459 +    {
2460 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2461 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2462 +        final IncAction r = new IncAction();
2463 +        final CFException ex = new CFException();
2464 +
2465 +        g.completeExceptionally(ex);
2466 +        f.complete(v1);
2467 +        final CompletableFuture<Void> h = m.acceptEither(f, g, r);
2468 +
2469 +        // unspecified behavior
2470 +        Integer v;
2471 +        try {
2472 +            assertNull(h.join());
2473 +            assertEquals(1, r.invocationCount);
2474 +            assertEquals(inc(v1), r.value);
2475 +        } catch (CompletionException ok) {
2476 +            checkCompletedWithWrappedCFException(h, ex);
2477 +            assertEquals(0, r.invocationCount);
2478 +        }
2479 +
2480 +        checkCompletedWithWrappedCFException(g, ex);
2481 +        checkCompletedNormally(f, v1);
2482 +    }}
2483 +
2484 +    public void testAcceptEither_exceptionalCompletion4() {
2485 +        for (ExecutionMode m : ExecutionMode.values())
2486 +        for (Integer v1 : new Integer[] { 1, null })
2487 +    {
2488 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2489 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2490 +        final IncAction r = new IncAction();
2491 +        final CFException ex = new CFException();
2492 +
2493 +        f.completeExceptionally(ex);
2494 +        g.complete(v1);
2495 +        final CompletableFuture<Void> h = m.acceptEither(f, g, r);
2496 +
2497 +        // unspecified behavior
2498 +        Integer v;
2499 +        try {
2500 +            assertNull(h.join());
2501 +            assertEquals(1, r.invocationCount);
2502 +            assertEquals(inc(v1), r.value);
2503 +        } catch (CompletionException ok) {
2504 +            checkCompletedWithWrappedCFException(h, ex);
2505 +            assertEquals(0, r.invocationCount);
2506 +        }
2507 +
2508 +        checkCompletedWithWrappedCFException(f, ex);
2509 +        checkCompletedNormally(g, v1);
2510 +    }}
2511 +
2512 +    /**
2513 +     * acceptEither result completes exceptionally if action does
2514 +     */
2515 +    public void testAcceptEither_actionFailed1() {
2516 +        for (ExecutionMode m : ExecutionMode.values())
2517 +        for (Integer v1 : new Integer[] { 1, null })
2518 +        for (Integer v2 : new Integer[] { 2, null })
2519 +    {
2520 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2521 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2522 +        final FailingConsumer r = new FailingConsumer();
2523 +        final CompletableFuture<Void> h = m.acceptEither(f, g, r);
2524 +
2525 +        f.complete(v1);
2526 +        checkCompletedWithWrappedCFException(h);
2527 +        g.complete(v2);
2528 +        checkCompletedNormally(f, v1);
2529 +        checkCompletedNormally(g, v2);
2530 +    }}
2531 +
2532 +    public void testAcceptEither_actionFailed2() {
2533 +        for (ExecutionMode m : ExecutionMode.values())
2534 +        for (Integer v1 : new Integer[] { 1, null })
2535 +        for (Integer v2 : new Integer[] { 2, null })
2536 +    {
2537 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2538 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2539 +        final FailingConsumer r = new FailingConsumer();
2540 +        final CompletableFuture<Void> h = m.acceptEither(f, g, r);
2541 +
2542 +        g.complete(v2);
2543 +        checkCompletedWithWrappedCFException(h);
2544 +        f.complete(v1);
2545 +        checkCompletedNormally(f, v1);
2546 +        checkCompletedNormally(g, v2);
2547 +    }}
2548 +
2549 +    /**
2550 +     * acceptEither result completes exceptionally if either source cancelled
2551 +     */
2552 +    public void testAcceptEither_sourceCancelled1() {
2553 +        for (ExecutionMode m : ExecutionMode.values())
2554 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2555 +        for (Integer v1 : new Integer[] { 1, null })
2556 +    {
2557 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2558 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2559 +        final IncAction r = new IncAction();
2560 +        final CompletableFuture<Void> h = m.acceptEither(f, g, r);
2561 +
2562 +        assertTrue(f.cancel(mayInterruptIfRunning));
2563 +        checkCompletedWithWrappedCancellationException(h);
2564 +        g.complete(v1);
2565 +
2566 +        checkCancelled(f);
2567 +        assertEquals(0, r.invocationCount);
2568 +        checkCompletedNormally(g, v1);
2569 +        checkCompletedWithWrappedCancellationException(h);
2570 +    }}
2571 +
2572 +    public void testAcceptEither_sourceCancelled2() {
2573 +        for (ExecutionMode m : ExecutionMode.values())
2574 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2575 +        for (Integer v1 : new Integer[] { 1, null })
2576 +    {
2577 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2578 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2579 +        final IncAction r = new IncAction();
2580 +        final CompletableFuture<Void> h = m.acceptEither(f, g, r);
2581 +
2582 +        assertTrue(g.cancel(mayInterruptIfRunning));
2583 +        checkCompletedWithWrappedCancellationException(h);
2584 +        f.complete(v1);
2585 +
2586 +        checkCancelled(g);
2587 +        assertEquals(0, r.invocationCount);
2588 +        checkCompletedNormally(f, v1);
2589 +        checkCompletedWithWrappedCancellationException(h);
2590 +    }}
2591 +
2592 +    public void testAcceptEither_sourceCancelled3() {
2593 +        for (ExecutionMode m : ExecutionMode.values())
2594 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2595 +        for (Integer v1 : new Integer[] { 1, null })
2596 +    {
2597 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2598 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2599 +        final IncAction r = new IncAction();
2600 +
2601 +        assertTrue(g.cancel(mayInterruptIfRunning));
2602 +        f.complete(v1);
2603 +        final CompletableFuture<Void> h = m.acceptEither(f, g, r);
2604 +
2605 +        // unspecified behavior
2606 +        Integer v;
2607 +        try {
2608 +            assertNull(h.join());
2609 +            assertEquals(1, r.invocationCount);
2610 +            assertEquals(inc(v1), r.value);
2611 +        } catch (CompletionException ok) {
2612 +            checkCompletedWithWrappedCancellationException(h);
2613 +            assertEquals(0, r.invocationCount);
2614 +        }
2615 +
2616 +        checkCancelled(g);
2617 +        checkCompletedNormally(f, v1);
2618 +    }}
2619 +
2620 +    public void testAcceptEither_sourceCancelled4() {
2621 +        for (ExecutionMode m : ExecutionMode.values())
2622 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2623 +        for (Integer v1 : new Integer[] { 1, null })
2624 +    {
2625 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2626 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2627 +        final IncAction r = new IncAction();
2628 +
2629 +        assertTrue(f.cancel(mayInterruptIfRunning));
2630 +        g.complete(v1);
2631 +        final CompletableFuture<Void> h = m.acceptEither(f, g, r);
2632 +
2633 +        // unspecified behavior
2634 +        Integer v;
2635 +        try {
2636 +            assertNull(h.join());
2637 +            assertEquals(1, r.invocationCount);
2638 +            assertEquals(inc(v1), r.value);
2639 +        } catch (CompletionException ok) {
2640 +            checkCompletedWithWrappedCancellationException(h);
2641 +            assertEquals(0, r.invocationCount);
2642 +        }
2643 +
2644 +        checkCancelled(f);
2645 +        checkCompletedNormally(g, v1);
2646 +    }}
2647 +
2648 +    /**
2649 +     * runAfterEither result completes normally after normal completion
2650 +     * of either source
2651 +     */
2652 +    public void testRunAfterEither_normalCompletion1() {
2653 +        for (ExecutionMode m : ExecutionMode.values())
2654 +        for (Integer v1 : new Integer[] { 1, null })
2655 +        for (Integer v2 : new Integer[] { 2, null })
2656 +    {
2657 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2658 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2659 +        final Noop r = new Noop();
2660 +        final CompletableFuture<Void> h = m.runAfterEither(f, g, r);
2661 +
2662 +        f.complete(v1);
2663 +        checkCompletedNormally(h, null);
2664 +        assertEquals(1, r.invocationCount);
2665 +        g.complete(v2);
2666 +
2667 +        checkCompletedNormally(f, v1);
2668 +        checkCompletedNormally(g, v2);
2669 +        checkCompletedNormally(h, null);
2670 +        assertEquals(1, r.invocationCount);
2671 +    }}
2672 +
2673 +    public void testRunAfterEither_normalCompletion2() {
2674 +        for (ExecutionMode m : ExecutionMode.values())
2675 +        for (Integer v1 : new Integer[] { 1, null })
2676 +        for (Integer v2 : new Integer[] { 2, null })
2677 +    {
2678 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2679 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2680 +        final Noop r = new Noop();
2681 +        final CompletableFuture<Void> h = m.runAfterEither(f, g, r);
2682 +
2683 +        g.complete(v2);
2684 +        checkCompletedNormally(h, null);
2685 +        assertEquals(1, r.invocationCount);
2686 +        f.complete(v1);
2687 +
2688 +        checkCompletedNormally(f, v1);
2689 +        checkCompletedNormally(g, v2);
2690 +        checkCompletedNormally(h, null);
2691 +        assertEquals(1, r.invocationCount);
2692 +        }}
2693 +
2694 +    public void testRunAfterEither_normalCompletion3() {
2695 +        for (ExecutionMode m : ExecutionMode.values())
2696 +        for (Integer v1 : new Integer[] { 1, null })
2697 +        for (Integer v2 : new Integer[] { 2, null })
2698 +    {
2699 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2700 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2701 +        final Noop r = new Noop();
2702 +
2703 +        f.complete(v1);
2704 +        g.complete(v2);
2705 +        final CompletableFuture<Void> h = m.runAfterEither(f, g, r);
2706 +
2707 +        checkCompletedNormally(h, null);
2708 +        checkCompletedNormally(f, v1);
2709 +        checkCompletedNormally(g, v2);
2710 +        assertEquals(1, r.invocationCount);
2711 +    }}
2712 +
2713 +    /**
2714 +     * runAfterEither result completes exceptionally after exceptional
2715 +     * completion of either source
2716 +     */
2717 +    public void testRunAfterEither_exceptionalCompletion1() {
2718 +        for (ExecutionMode m : ExecutionMode.values())
2719 +        for (Integer v1 : new Integer[] { 1, null })
2720 +    {
2721 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2722 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2723 +        final Noop r = new Noop();
2724 +        final CompletableFuture<Void> h = m.runAfterEither(f, g, r);
2725 +        final CFException ex = new CFException();
2726 +
2727 +        f.completeExceptionally(ex);
2728 +        checkCompletedWithWrappedCFException(h, ex);
2729 +        g.complete(v1);
2730 +
2731 +        assertEquals(0, r.invocationCount);
2732 +        checkCompletedNormally(g, v1);
2733 +        checkCompletedWithWrappedCFException(f, ex);
2734 +        checkCompletedWithWrappedCFException(h, ex);
2735 +    }}
2736 +
2737 +    public void testRunAfterEither_exceptionalCompletion2() {
2738 +        for (ExecutionMode m : ExecutionMode.values())
2739 +        for (Integer v1 : new Integer[] { 1, null })
2740 +    {
2741 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2742 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2743 +        final Noop r = new Noop();
2744 +        final CompletableFuture<Void> h = m.runAfterEither(f, g, r);
2745 +        final CFException ex = new CFException();
2746 +
2747 +        g.completeExceptionally(ex);
2748 +        checkCompletedWithWrappedCFException(h, ex);
2749 +        f.complete(v1);
2750 +
2751 +        assertEquals(0, r.invocationCount);
2752 +        checkCompletedNormally(f, v1);
2753 +        checkCompletedWithWrappedCFException(g, ex);
2754 +        checkCompletedWithWrappedCFException(h, ex);
2755 +    }}
2756 +
2757 +    public void testRunAfterEither_exceptionalCompletion3() {
2758 +        for (ExecutionMode m : ExecutionMode.values())
2759 +        for (Integer v1 : new Integer[] { 1, null })
2760 +    {
2761 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2762 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2763 +        final Noop r = new Noop();
2764 +        final CFException ex = new CFException();
2765 +
2766 +        g.completeExceptionally(ex);
2767 +        f.complete(v1);
2768 +        final CompletableFuture<Void> h = m.runAfterEither(f, g, r);
2769 +
2770 +        // unspecified behavior
2771 +        Integer v;
2772 +        try {
2773 +            assertNull(h.join());
2774 +            assertEquals(1, r.invocationCount);
2775 +        } catch (CompletionException ok) {
2776 +            checkCompletedWithWrappedCFException(h, ex);
2777 +            assertEquals(0, r.invocationCount);
2778 +        }
2779 +
2780 +        checkCompletedWithWrappedCFException(g, ex);
2781 +        checkCompletedNormally(f, v1);
2782 +    }}
2783 +
2784 +    public void testRunAfterEither_exceptionalCompletion4() {
2785 +        for (ExecutionMode m : ExecutionMode.values())
2786 +        for (Integer v1 : new Integer[] { 1, null })
2787 +    {
2788 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2789 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2790 +        final Noop r = new Noop();
2791 +        final CFException ex = new CFException();
2792 +
2793 +        f.completeExceptionally(ex);
2794 +        g.complete(v1);
2795 +        final CompletableFuture<Void> h = m.runAfterEither(f, g, r);
2796 +
2797 +        // unspecified behavior
2798 +        Integer v;
2799 +        try {
2800 +            assertNull(h.join());
2801 +            assertEquals(1, r.invocationCount);
2802 +        } catch (CompletionException ok) {
2803 +            checkCompletedWithWrappedCFException(h, ex);
2804 +            assertEquals(0, r.invocationCount);
2805 +        }
2806 +
2807 +        checkCompletedWithWrappedCFException(f, ex);
2808 +        checkCompletedNormally(g, v1);
2809 +    }}
2810 +
2811 +    /**
2812 +     * runAfterEither result completes exceptionally if action does
2813 +     */
2814 +    public void testRunAfterEither_actionFailed1() {
2815 +        for (ExecutionMode m : ExecutionMode.values())
2816 +        for (Integer v1 : new Integer[] { 1, null })
2817 +        for (Integer v2 : new Integer[] { 2, null })
2818 +    {
2819 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2820 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2821 +        final FailingRunnable r = new FailingRunnable();
2822 +        final CompletableFuture<Void> h = m.runAfterEither(f, g, r);
2823 +
2824 +        f.complete(v1);
2825 +        checkCompletedWithWrappedCFException(h);
2826 +        g.complete(v2);
2827 +        checkCompletedNormally(f, v1);
2828 +        checkCompletedNormally(g, v2);
2829 +    }}
2830 +
2831 +    public void testRunAfterEither_actionFailed2() {
2832 +        for (ExecutionMode m : ExecutionMode.values())
2833 +        for (Integer v1 : new Integer[] { 1, null })
2834 +        for (Integer v2 : new Integer[] { 2, null })
2835 +    {
2836 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2837 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2838 +        final FailingRunnable r = new FailingRunnable();
2839 +        final CompletableFuture<Void> h = m.runAfterEither(f, g, r);
2840 +
2841 +        g.complete(v2);
2842 +        checkCompletedWithWrappedCFException(h);
2843 +        f.complete(v1);
2844 +        checkCompletedNormally(f, v1);
2845 +        checkCompletedNormally(g, v2);
2846 +    }}
2847 +
2848 +    /**
2849 +     * runAfterEither result completes exceptionally if either source cancelled
2850 +     */
2851 +    public void testRunAfterEither_sourceCancelled1() {
2852 +        for (ExecutionMode m : ExecutionMode.values())
2853 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2854 +        for (Integer v1 : new Integer[] { 1, null })
2855 +    {
2856 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2857 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2858 +        final Noop r = new Noop();
2859 +        final CompletableFuture<Void> h = m.runAfterEither(f, g, r);
2860 +
2861 +        assertTrue(f.cancel(mayInterruptIfRunning));
2862 +        checkCompletedWithWrappedCancellationException(h);
2863 +        g.complete(v1);
2864 +
2865 +        checkCancelled(f);
2866 +        assertEquals(0, r.invocationCount);
2867 +        checkCompletedNormally(g, v1);
2868 +        checkCompletedWithWrappedCancellationException(h);
2869 +    }}
2870 +
2871 +    public void testRunAfterEither_sourceCancelled2() {
2872 +        for (ExecutionMode m : ExecutionMode.values())
2873 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2874 +        for (Integer v1 : new Integer[] { 1, null })
2875 +    {
2876 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2877 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2878 +        final Noop r = new Noop();
2879 +        final CompletableFuture<Void> h = m.runAfterEither(f, g, r);
2880 +
2881 +        assertTrue(g.cancel(mayInterruptIfRunning));
2882 +        checkCompletedWithWrappedCancellationException(h);
2883 +        f.complete(v1);
2884 +
2885 +        checkCancelled(g);
2886 +        assertEquals(0, r.invocationCount);
2887 +        checkCompletedNormally(f, v1);
2888 +        checkCompletedWithWrappedCancellationException(h);
2889 +    }}
2890 +
2891 +    public void testRunAfterEither_sourceCancelled3() {
2892 +        for (ExecutionMode m : ExecutionMode.values())
2893 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2894 +        for (Integer v1 : new Integer[] { 1, null })
2895 +    {
2896 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2897 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2898 +        final Noop r = new Noop();
2899 +
2900 +        assertTrue(g.cancel(mayInterruptIfRunning));
2901 +        f.complete(v1);
2902 +        final CompletableFuture<Void> h = m.runAfterEither(f, g, r);
2903 +
2904 +        // unspecified behavior
2905 +        Integer v;
2906 +        try {
2907 +            assertNull(h.join());
2908 +            assertEquals(1, r.invocationCount);
2909 +        } catch (CompletionException ok) {
2910 +            checkCompletedWithWrappedCancellationException(h);
2911 +            assertEquals(0, r.invocationCount);
2912 +        }
2913 +
2914 +        checkCancelled(g);
2915 +        checkCompletedNormally(f, v1);
2916 +    }}
2917 +
2918 +    public void testRunAfterEither_sourceCancelled4() {
2919 +        for (ExecutionMode m : ExecutionMode.values())
2920 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2921 +        for (Integer v1 : new Integer[] { 1, null })
2922 +    {
2923 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2924 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2925 +        final Noop r = new Noop();
2926 +
2927 +        assertTrue(f.cancel(mayInterruptIfRunning));
2928 +        g.complete(v1);
2929 +        final CompletableFuture<Void> h = m.runAfterEither(f, g, r);
2930 +
2931 +        // unspecified behavior
2932 +        Integer v;
2933 +        try {
2934 +            assertNull(h.join());
2935 +            assertEquals(1, r.invocationCount);
2936 +        } catch (CompletionException ok) {
2937 +            checkCompletedWithWrappedCancellationException(h);
2938 +            assertEquals(0, r.invocationCount);
2939 +        }
2940 +
2941 +        checkCancelled(f);
2942 +        checkCompletedNormally(g, v1);
2943 +    }}
2944 +
2945 +    /**
2946 +     * thenCompose result completes normally after normal completion of source
2947 +     */
2948 +    public void testThenCompose_normalCompletion() {
2949 +        for (ExecutionMode m : ExecutionMode.values())
2950 +        for (boolean createIncomplete : new boolean[] { true, false })
2951 +        for (Integer v1 : new Integer[] { 1, null })
2952 +    {
2953 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2954 +        final CompletableFutureInc r = new CompletableFutureInc();
2955 +        if (!createIncomplete) f.complete(v1);
2956 +        final CompletableFuture<Integer> g = f.thenCompose(r);
2957 +        if (createIncomplete) f.complete(v1);
2958 +
2959 +        checkCompletedNormally(g, inc(v1));
2960 +        checkCompletedNormally(f, v1);
2961 +        assertEquals(1, r.invocationCount);
2962 +    }}
2963 +
2964 +    /**
2965 +     * thenCompose result completes exceptionally after exceptional
2966 +     * completion of source
2967 +     */
2968 +    public void testThenCompose_exceptionalCompletion() {
2969 +        for (ExecutionMode m : ExecutionMode.values())
2970 +        for (boolean createIncomplete : new boolean[] { true, false })
2971 +    {
2972 +        final CFException ex = new CFException();
2973 +        final CompletableFutureInc r = new CompletableFutureInc();
2974 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2975 +        if (!createIncomplete) f.completeExceptionally(ex);
2976 +        final CompletableFuture<Integer> g = f.thenCompose(r);
2977 +        if (createIncomplete) f.completeExceptionally(ex);
2978 +
2979 +        checkCompletedWithWrappedCFException(g, ex);
2980 +        checkCompletedWithWrappedCFException(f, ex);
2981 +        assertEquals(0, r.invocationCount);
2982 +    }}
2983 +
2984 +    /**
2985 +     * thenCompose result completes exceptionally if action does
2986 +     */
2987 +    public void testThenCompose_actionFailed() {
2988 +        for (ExecutionMode m : ExecutionMode.values())
2989 +        for (boolean createIncomplete : new boolean[] { true, false })
2990 +        for (Integer v1 : new Integer[] { 1, null })
2991 +    {
2992 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2993 +        final FailingCompletableFutureFunction r
2994 +            = new FailingCompletableFutureFunction();
2995 +        if (!createIncomplete) f.complete(v1);
2996 +        final CompletableFuture<Integer> g = f.thenCompose(r);
2997 +        if (createIncomplete) f.complete(v1);
2998 +
2999 +        checkCompletedWithWrappedCFException(g);
3000 +        checkCompletedNormally(f, v1);
3001 +    }}
3002 +
3003 +    /**
3004 +     * thenCompose result completes exceptionally if source cancelled
3005 +     */
3006 +    public void testThenCompose_sourceCancelled() {
3007 +        for (ExecutionMode m : ExecutionMode.values())
3008 +        for (boolean createIncomplete : new boolean[] { true, false })
3009 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
3010 +    {
3011 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
3012 +        final CompletableFutureInc r = new CompletableFutureInc();
3013 +        if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
3014 +        final CompletableFuture<Integer> g = f.thenCompose(r);
3015 +        if (createIncomplete) {
3016 +            checkIncomplete(g);
3017 +            assertTrue(f.cancel(mayInterruptIfRunning));
3018 +        }
3019 +
3020 +        checkCompletedWithWrappedCancellationException(g);
3021 +        checkCancelled(f);
3022 +    }}
3023 +
3024 +    // other static methods
3025 +
3026 +    /**
3027 +     * allOf(no component futures) returns a future completed normally
3028 +     * with the value null
3029 +     */
3030 +    public void testAllOf_empty() throws Exception {
3031 +        CompletableFuture<Void> f = CompletableFuture.allOf();
3032 +        checkCompletedNormally(f, null);
3033 +    }
3034 +
3035 +    /**
3036 +     * allOf returns a future completed normally with the value null
3037 +     * when all components complete normally
3038 +     */
3039 +    public void testAllOf_normal() throws Exception {
3040 +        for (int k = 1; k < 20; ++k) {
3041 +            CompletableFuture<Integer>[] fs = (CompletableFuture<Integer>[]) new CompletableFuture[k];
3042 +            for (int i = 0; i < k; ++i)
3043 +                fs[i] = new CompletableFuture<>();
3044 +            CompletableFuture<Void> f = CompletableFuture.allOf(fs);
3045 +            for (int i = 0; i < k; ++i) {
3046 +                checkIncomplete(f);
3047 +                checkIncomplete(CompletableFuture.allOf(fs));
3048 +                fs[i].complete(one);
3049 +            }
3050 +            checkCompletedNormally(f, null);
3051 +            checkCompletedNormally(CompletableFuture.allOf(fs), null);
3052 +        }
3053 +    }
3054 +
3055 +    /**
3056 +     * anyOf(no component futures) returns an incomplete future
3057 +     */
3058 +    public void testAnyOf_empty() throws Exception {
3059 +        CompletableFuture<Object> f = CompletableFuture.anyOf();
3060 +        checkIncomplete(f);
3061 +    }
3062 +
3063 +    /**
3064 +     * anyOf returns a future completed normally with a value when
3065 +     * a component future does
3066 +     */
3067 +    public void testAnyOf_normal() throws Exception {
3068 +        for (int k = 0; k < 10; ++k) {
3069 +            CompletableFuture[] fs = new CompletableFuture[k];
3070 +            for (int i = 0; i < k; ++i)
3071 +                fs[i] = new CompletableFuture<>();
3072 +            CompletableFuture<Object> f = CompletableFuture.anyOf(fs);
3073 +            checkIncomplete(f);
3074 +            for (int i = 0; i < k; ++i) {
3075 +                fs[i].complete(one);
3076 +                checkCompletedNormally(f, one);
3077 +                checkCompletedNormally(CompletableFuture.anyOf(fs), one);
3078 +            }
3079 +        }
3080 +    }
3081 +
3082 +    /**
3083 +     * anyOf result completes exceptionally when any component does.
3084 +     */
3085 +    public void testAnyOf_exceptional() throws Exception {
3086 +        for (int k = 0; k < 10; ++k) {
3087 +            CompletableFuture[] fs = new CompletableFuture[k];
3088 +            for (int i = 0; i < k; ++i)
3089 +                fs[i] = new CompletableFuture<>();
3090 +            CompletableFuture<Object> f = CompletableFuture.anyOf(fs);
3091 +            checkIncomplete(f);
3092 +            for (int i = 0; i < k; ++i) {
3093 +                fs[i].completeExceptionally(new CFException());
3094 +                checkCompletedWithWrappedCFException(f);
3095 +                checkCompletedWithWrappedCFException(CompletableFuture.anyOf(fs));
3096 +            }
3097 +        }
3098 +    }
3099 +
3100 +    /**
3101 +     * Completion methods throw NullPointerException with null arguments
3102 +     */
3103 +    public void testNPE() {
3104 +        CompletableFuture<Integer> f = new CompletableFuture<>();
3105 +        CompletableFuture<Integer> g = new CompletableFuture<>();
3106 +        CompletableFuture<Integer> nullFuture = (CompletableFuture<Integer>)null;
3107 +        CompletableFuture<?> h;
3108 +        ThreadExecutor exec = new ThreadExecutor();
3109 +
3110 +        Runnable[] throwingActions = {
3111 +            () -> CompletableFuture.supplyAsync(null),
3112 +            () -> CompletableFuture.supplyAsync(null, exec),
3113 +            () -> CompletableFuture.supplyAsync(supplyOne, null),
3114 +
3115 +            () -> CompletableFuture.runAsync(null),
3116 +            () -> CompletableFuture.runAsync(null, exec),
3117 +            () -> CompletableFuture.runAsync(() -> {}, null),
3118 +
3119 +            () -> f.completeExceptionally(null),
3120 +
3121 +            () -> f.thenApply(null),
3122 +            () -> f.thenApplyAsync(null),
3123 +            () -> f.thenApplyAsync((x) -> x, null),
3124 +            () -> f.thenApplyAsync(null, exec),
3125 +
3126 +            () -> f.thenAccept(null),
3127 +            () -> f.thenAcceptAsync(null),
3128 +            () -> f.thenAcceptAsync((x) -> {} , null),
3129 +            () -> f.thenAcceptAsync(null, exec),
3130 +
3131 +            () -> f.thenRun(null),
3132 +            () -> f.thenRunAsync(null),
3133 +            () -> f.thenRunAsync(() -> {} , null),
3134 +            () -> f.thenRunAsync(null, exec),
3135 +
3136 +            () -> f.thenCombine(g, null),
3137 +            () -> f.thenCombineAsync(g, null),
3138 +            () -> f.thenCombineAsync(g, null, exec),
3139 +            () -> f.thenCombine(nullFuture, (x, y) -> x),
3140 +            () -> f.thenCombineAsync(nullFuture, (x, y) -> x),
3141 +            () -> f.thenCombineAsync(nullFuture, (x, y) -> x, exec),
3142 +            () -> f.thenCombineAsync(g, (x, y) -> x, null),
3143 +
3144 +            () -> f.thenAcceptBoth(g, null),
3145 +            () -> f.thenAcceptBothAsync(g, null),
3146 +            () -> f.thenAcceptBothAsync(g, null, exec),
3147 +            () -> f.thenAcceptBoth(nullFuture, (x, y) -> {}),
3148 +            () -> f.thenAcceptBothAsync(nullFuture, (x, y) -> {}),
3149 +            () -> f.thenAcceptBothAsync(nullFuture, (x, y) -> {}, exec),
3150 +            () -> f.thenAcceptBothAsync(g, (x, y) -> {}, null),
3151 +
3152 +            () -> f.runAfterBoth(g, null),
3153 +            () -> f.runAfterBothAsync(g, null),
3154 +            () -> f.runAfterBothAsync(g, null, exec),
3155 +            () -> f.runAfterBoth(nullFuture, () -> {}),
3156 +            () -> f.runAfterBothAsync(nullFuture, () -> {}),
3157 +            () -> f.runAfterBothAsync(nullFuture, () -> {}, exec),
3158 +            () -> f.runAfterBothAsync(g, () -> {}, null),
3159 +
3160 +            () -> f.applyToEither(g, null),
3161 +            () -> f.applyToEitherAsync(g, null),
3162 +            () -> f.applyToEitherAsync(g, null, exec),
3163 +            () -> f.applyToEither(nullFuture, (x) -> x),
3164 +            () -> f.applyToEitherAsync(nullFuture, (x) -> x),
3165 +            () -> f.applyToEitherAsync(nullFuture, (x) -> x, exec),
3166 +            () -> f.applyToEitherAsync(g, (x) -> x, null),
3167 +
3168 +            () -> f.acceptEither(g, null),
3169 +            () -> f.acceptEitherAsync(g, null),
3170 +            () -> f.acceptEitherAsync(g, null, exec),
3171 +            () -> f.acceptEither(nullFuture, (x) -> {}),
3172 +            () -> f.acceptEitherAsync(nullFuture, (x) -> {}),
3173 +            () -> f.acceptEitherAsync(nullFuture, (x) -> {}, exec),
3174 +            () -> f.acceptEitherAsync(g, (x) -> {}, null),
3175 +
3176 +            () -> f.runAfterEither(g, null),
3177 +            () -> f.runAfterEitherAsync(g, null),
3178 +            () -> f.runAfterEitherAsync(g, null, exec),
3179 +            () -> f.runAfterEither(nullFuture, () -> {}),
3180 +            () -> f.runAfterEitherAsync(nullFuture, () -> {}),
3181 +            () -> f.runAfterEitherAsync(nullFuture, () -> {}, exec),
3182 +            () -> f.runAfterEitherAsync(g, () -> {}, null),
3183 +
3184 +            () -> f.thenCompose(null),
3185 +            () -> f.thenComposeAsync(null),
3186 +            () -> f.thenComposeAsync(new CompletableFutureInc(), null),
3187 +            () -> f.thenComposeAsync(null, exec),
3188 +
3189 +            () -> f.exceptionally(null),
3190 +
3191 +            () -> f.handle(null),
3192 +
3193 +            () -> CompletableFuture.allOf((CompletableFuture<?>)null),
3194 +            () -> CompletableFuture.allOf((CompletableFuture<?>[])null),
3195 +            () -> CompletableFuture.allOf(f, null),
3196 +            () -> CompletableFuture.allOf(null, f),
3197 +
3198 +            () -> CompletableFuture.anyOf((CompletableFuture<?>)null),
3199 +            () -> CompletableFuture.anyOf((CompletableFuture<?>[])null),
3200 +            () -> CompletableFuture.anyOf(f, null),
3201 +            () -> CompletableFuture.anyOf(null, f),
3202 +
3203 +            () -> f.obtrudeException(null),
3204 +        };
3205 +
3206 +        assertThrows(NullPointerException.class, throwingActions);
3207 +        assertEquals(0, exec.count.get());
3208 +    }
3209 +
3210 +    /**
3211 +     * toCompletableFuture returns this CompletableFuture.
3212 +     */
3213 +    public void testToCompletableFuture() {
3214 +        CompletableFuture<Integer> f = new CompletableFuture<>();
3215 +        assertSame(f, f.toCompletableFuture());
3216 +    }
3217 +
3218 +    /**
3219 +     * whenComplete action executes on normal completion, propagating
3220 +     * source result.
3221 +     */
3222 +    public void testWhenComplete_normalCompletion1() {
3223 +        for (ExecutionMode m : ExecutionMode.values())
3224 +        for (boolean createIncomplete : new boolean[] { true, false })
3225 +        for (Integer v1 : new Integer[] { 1, null })
3226 +    {
3227 +        final AtomicInteger a = new AtomicInteger(0);
3228 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
3229 +        if (!createIncomplete) f.complete(v1);
3230 +        final CompletableFuture<Integer> g = m.whenComplete
3231 +            (f,
3232 +             (Integer x, Throwable t) -> {
3233 +                threadAssertSame(x, v1);
3234 +                threadAssertNull(t);
3235 +                a.getAndIncrement();
3236 +            });
3237 +        if (createIncomplete) f.complete(v1);
3238 +
3239 +        checkCompletedNormally(g, v1);
3240 +        checkCompletedNormally(f, v1);
3241 +        assertEquals(1, a.get());
3242 +    }}
3243 +
3244 +    /**
3245 +     * whenComplete action executes on exceptional completion, propagating
3246 +     * source result.
3247 +     */
3248 +    public void testWhenComplete_exceptionalCompletion() {
3249 +        for (ExecutionMode m : ExecutionMode.values())
3250 +        for (boolean createIncomplete : new boolean[] { true, false })
3251 +        for (Integer v1 : new Integer[] { 1, null })
3252 +    {
3253 +        final AtomicInteger a = new AtomicInteger(0);
3254 +        final CFException ex = new CFException();
3255 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
3256 +        if (!createIncomplete) f.completeExceptionally(ex);
3257 +        final CompletableFuture<Integer> g = m.whenComplete
3258 +            (f,
3259 +             (Integer x, Throwable t) -> {
3260 +                threadAssertNull(x);
3261 +                threadAssertSame(t, ex);
3262 +                a.getAndIncrement();
3263 +            });
3264 +        if (createIncomplete) f.completeExceptionally(ex);
3265 +        checkCompletedWithWrappedCFException(f, ex);
3266 +        checkCompletedWithWrappedCFException(g, ex);
3267 +        assertEquals(1, a.get());
3268 +    }}
3269 +
3270 +    /**
3271 +     * whenComplete action executes on cancelled source, propagating
3272 +     * CancellationException.
3273 +     */
3274 +    public void testWhenComplete_sourceCancelled() {
3275 +        for (ExecutionMode m : ExecutionMode.values())
3276 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
3277 +        for (boolean createIncomplete : new boolean[] { true, false })
3278 +    {
3279 +        final AtomicInteger a = new AtomicInteger(0);
3280 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
3281 +        if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
3282 +        final CompletableFuture<Integer> g = m.whenComplete
3283 +            (f,
3284 +             (Integer x, Throwable t) -> {
3285 +                threadAssertNull(x);
3286 +                threadAssertTrue(t instanceof CancellationException);
3287 +                a.getAndIncrement();
3288 +            });
3289 +        if (createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
3290 +
3291 +        //try { g.join(); } catch (Throwable t) { throw new Error(t); }
3292 +        checkCompletedWithWrappedCancellationException(g);
3293 +        checkCancelled(f);
3294 +        assertEquals(1, a.get());
3295 +    }}
3296 +
3297 +    /**
3298 +     * If a whenComplete action throws an exception when triggered by
3299 +     * a normal completion, it completes exceptionally
3300 +     */
3301 +    public void testWhenComplete_actionFailed() {
3302 +        for (boolean createIncomplete : new boolean[] { true, false })
3303 +        for (ExecutionMode m : ExecutionMode.values())
3304 +        for (Integer v1 : new Integer[] { 1, null })
3305 +    {
3306 +        final AtomicInteger a = new AtomicInteger(0);
3307 +        final CFException ex = new CFException();
3308 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
3309 +        if (!createIncomplete) f.complete(v1);
3310 +        final CompletableFuture<Integer> g = m.whenComplete
3311 +            (f,
3312 +             (Integer x, Throwable t) -> {
3313 +                threadAssertSame(x, v1);
3314 +                threadAssertNull(t);
3315 +                a.getAndIncrement();
3316 +                throw ex;
3317 +            });
3318 +        if (createIncomplete) f.complete(v1);
3319 +        checkCompletedNormally(f, v1);
3320 +        checkCompletedWithWrappedCFException(g, ex);
3321 +        assertEquals(1, a.get());
3322 +    }}
3323 +
3324 +    /**
3325 +     * If a whenComplete action throws an exception when triggered by
3326 +     * a source completion that also throws an exception, the source
3327 +     * exception takes precedence.
3328 +     */
3329 +    public void testWhenComplete_actionFailedSourceFailed() {
3330 +        for (boolean createIncomplete : new boolean[] { true, false })
3331 +        for (ExecutionMode m : ExecutionMode.values())
3332 +        for (Integer v1 : new Integer[] { 1, null })
3333 +    {
3334 +        final AtomicInteger a = new AtomicInteger(0);
3335 +        final CFException ex1 = new CFException();
3336 +        final CFException ex2 = new CFException();
3337 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
3338 +
3339 +        if (!createIncomplete) f.completeExceptionally(ex1);
3340 +        final CompletableFuture<Integer> g = m.whenComplete
3341 +            (f,
3342 +             (Integer x, Throwable t) -> {
3343 +                threadAssertSame(t, ex1);
3344 +                threadAssertNull(x);
3345 +                a.getAndIncrement();
3346 +                throw ex2;
3347 +            });
3348 +        if (createIncomplete) f.completeExceptionally(ex1);
3349 +
3350 +        checkCompletedWithWrappedCFException(f, ex1);
3351 +        checkCompletedWithWrappedCFException(g, ex1);
3352 +        assertEquals(1, a.get());
3353 +    }}
3354 +
3355   }

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