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Comparing jsr166/src/test/tck/CompletableFutureTest.java (file contents):
Revision 1.1 by jsr166, Wed Feb 6 19:55:06 2013 UTC vs.
Revision 1.50 by jsr166, Mon Jun 2 19:32:57 2014 UTC

# Line 1 | Line 1
1   /*
2 < * Written by Doug Lea with assistance from members of JCP JSR-166
3 < * Expert Group and released to the public domain, as explained at
2 > * Written by Doug Lea and Martin Buchholz with assistance from
3 > * members of JCP JSR-166 Expert Group and released to the public
4 > * domain, as explained at
5   * http://creativecommons.org/publicdomain/zero/1.0/
5 * Other contributors include Andrew Wright, Jeffrey Hayes,
6 * Pat Fisher, Mike Judd.
6   */
7  
8   import junit.framework.*;
9   import java.util.concurrent.Callable;
10 + import java.util.concurrent.Executor;
11 + import java.util.concurrent.ExecutorService;
12 + import java.util.concurrent.Executors;
13   import java.util.concurrent.CancellationException;
14   import java.util.concurrent.CountDownLatch;
15   import java.util.concurrent.ExecutionException;
16   import java.util.concurrent.Future;
17   import java.util.concurrent.CompletableFuture;
18 + import java.util.concurrent.CompletionException;
19 + import java.util.concurrent.CompletionStage;
20 + import java.util.concurrent.ForkJoinPool;
21 + import java.util.concurrent.ForkJoinTask;
22   import java.util.concurrent.TimeoutException;
23   import java.util.concurrent.atomic.AtomicInteger;
24   import static java.util.concurrent.TimeUnit.MILLISECONDS;
25   import static java.util.concurrent.TimeUnit.SECONDS;
26   import java.util.*;
27 + import java.util.function.Supplier;
28 + import java.util.function.Consumer;
29 + import java.util.function.BiConsumer;
30 + import java.util.function.Function;
31 + import java.util.function.BiFunction;
32  
33   public class CompletableFutureTest extends JSR166TestCase {
34  
# Line 28 | Line 39 | public class CompletableFutureTest exten
39          return new TestSuite(CompletableFutureTest.class);
40      }
41  
42 +    static class CFException extends RuntimeException {}
43 +
44 +    void checkIncomplete(CompletableFuture<?> f) {
45 +        assertFalse(f.isDone());
46 +        assertFalse(f.isCancelled());
47 +        assertTrue(f.toString().contains("[Not completed]"));
48 +        try {
49 +            assertNull(f.getNow(null));
50 +        } catch (Throwable fail) { threadUnexpectedException(fail); }
51 +        try {
52 +            f.get(0L, SECONDS);
53 +            shouldThrow();
54 +        }
55 +        catch (TimeoutException success) {}
56 +        catch (Throwable fail) { threadUnexpectedException(fail); }
57 +    }
58 +
59 +    <T> void checkCompletedNormally(CompletableFuture<T> f, T value) {
60 +        try {
61 +            assertEquals(value, f.get(LONG_DELAY_MS, MILLISECONDS));
62 +        } catch (Throwable fail) { threadUnexpectedException(fail); }
63 +        try {
64 +            assertEquals(value, f.join());
65 +        } catch (Throwable fail) { threadUnexpectedException(fail); }
66 +        try {
67 +            assertEquals(value, f.getNow(null));
68 +        } catch (Throwable fail) { threadUnexpectedException(fail); }
69 +        try {
70 +            assertEquals(value, f.get());
71 +        } catch (Throwable fail) { threadUnexpectedException(fail); }
72 +        assertTrue(f.isDone());
73 +        assertFalse(f.isCancelled());
74 +        assertFalse(f.isCompletedExceptionally());
75 +        assertTrue(f.toString().contains("[Completed normally]"));
76 +    }
77 +
78 +    void checkCompletedWithWrappedCFException(CompletableFuture<?> f) {
79 +        try {
80 +            f.get(LONG_DELAY_MS, MILLISECONDS);
81 +            shouldThrow();
82 +        } catch (ExecutionException success) {
83 +            assertTrue(success.getCause() instanceof CFException);
84 +        } catch (Throwable fail) { threadUnexpectedException(fail); }
85 +        try {
86 +            f.join();
87 +            shouldThrow();
88 +        } catch (CompletionException success) {
89 +            assertTrue(success.getCause() instanceof CFException);
90 +        }
91 +        try {
92 +            f.getNow(null);
93 +            shouldThrow();
94 +        } catch (CompletionException success) {
95 +            assertTrue(success.getCause() instanceof CFException);
96 +        }
97 +        try {
98 +            f.get();
99 +            shouldThrow();
100 +        } catch (ExecutionException success) {
101 +            assertTrue(success.getCause() instanceof CFException);
102 +        } catch (Throwable fail) { threadUnexpectedException(fail); }
103 +        assertTrue(f.isDone());
104 +        assertFalse(f.isCancelled());
105 +        assertTrue(f.toString().contains("[Completed exceptionally]"));
106 +    }
107 +
108 +    void checkCompletedWithWrappedCFException(CompletableFuture<?> f,
109 +                                              CFException ex) {
110 +        try {
111 +            f.get(LONG_DELAY_MS, MILLISECONDS);
112 +            shouldThrow();
113 +        } catch (ExecutionException success) {
114 +            assertSame(ex, success.getCause());
115 +        } catch (Throwable fail) { threadUnexpectedException(fail); }
116 +        try {
117 +            f.join();
118 +            shouldThrow();
119 +        } catch (CompletionException success) {
120 +            assertSame(ex, success.getCause());
121 +        }
122 +        try {
123 +            f.getNow(null);
124 +            shouldThrow();
125 +        } catch (CompletionException success) {
126 +            assertSame(ex, success.getCause());
127 +        }
128 +        try {
129 +            f.get();
130 +            shouldThrow();
131 +        } catch (ExecutionException success) {
132 +            assertSame(ex, success.getCause());
133 +        } catch (Throwable fail) { threadUnexpectedException(fail); }
134 +        assertTrue(f.isDone());
135 +        assertFalse(f.isCancelled());
136 +        assertTrue(f.toString().contains("[Completed exceptionally]"));
137 +    }
138 +
139 +    void checkCancelled(CompletableFuture<?> f) {
140 +        try {
141 +            f.get(LONG_DELAY_MS, MILLISECONDS);
142 +            shouldThrow();
143 +        } catch (CancellationException success) {
144 +        } catch (Throwable fail) { threadUnexpectedException(fail); }
145 +        try {
146 +            f.join();
147 +            shouldThrow();
148 +        } catch (CancellationException success) {}
149 +        try {
150 +            f.getNow(null);
151 +            shouldThrow();
152 +        } catch (CancellationException success) {}
153 +        try {
154 +            f.get();
155 +            shouldThrow();
156 +        } catch (CancellationException success) {
157 +        } catch (Throwable fail) { threadUnexpectedException(fail); }
158 +        assertTrue(f.isDone());
159 +        assertTrue(f.isCompletedExceptionally());
160 +        assertTrue(f.isCancelled());
161 +        assertTrue(f.toString().contains("[Completed exceptionally]"));
162 +    }
163 +
164 +    void checkCompletedWithWrappedCancellationException(CompletableFuture<?> f) {
165 +        try {
166 +            f.get(LONG_DELAY_MS, MILLISECONDS);
167 +            shouldThrow();
168 +        } catch (ExecutionException success) {
169 +            assertTrue(success.getCause() instanceof CancellationException);
170 +        } catch (Throwable fail) { threadUnexpectedException(fail); }
171 +        try {
172 +            f.join();
173 +            shouldThrow();
174 +        } catch (CompletionException success) {
175 +            assertTrue(success.getCause() instanceof CancellationException);
176 +        }
177 +        try {
178 +            f.getNow(null);
179 +            shouldThrow();
180 +        } catch (CompletionException success) {
181 +            assertTrue(success.getCause() instanceof CancellationException);
182 +        }
183 +        try {
184 +            f.get();
185 +            shouldThrow();
186 +        } catch (ExecutionException success) {
187 +            assertTrue(success.getCause() instanceof CancellationException);
188 +        } catch (Throwable fail) { threadUnexpectedException(fail); }
189 +        assertTrue(f.isDone());
190 +        assertFalse(f.isCancelled());
191 +        assertTrue(f.isCompletedExceptionally());
192 +        assertTrue(f.toString().contains("[Completed exceptionally]"));
193 +    }
194 +
195 +    /**
196 +     * A newly constructed CompletableFuture is incomplete, as indicated
197 +     * by methods isDone, isCancelled, and getNow
198 +     */
199 +    public void testConstructor() {
200 +        CompletableFuture<Integer> f = new CompletableFuture<>();
201 +        checkIncomplete(f);
202 +    }
203 +
204 +    /**
205 +     * complete completes normally, as indicated by methods isDone,
206 +     * isCancelled, join, get, and getNow
207 +     */
208 +    public void testComplete() {
209 +        CompletableFuture<Integer> f = new CompletableFuture<>();
210 +        checkIncomplete(f);
211 +        f.complete(one);
212 +        checkCompletedNormally(f, one);
213 +    }
214 +
215 +    /**
216 +     * completeExceptionally completes exceptionally, as indicated by
217 +     * methods isDone, isCancelled, join, get, and getNow
218 +     */
219 +    public void testCompleteExceptionally() {
220 +        CompletableFuture<Integer> f = new CompletableFuture<>();
221 +        checkIncomplete(f);
222 +        f.completeExceptionally(new CFException());
223 +        checkCompletedWithWrappedCFException(f);
224 +    }
225 +
226 +    /**
227 +     * cancel completes exceptionally and reports cancelled, as indicated by
228 +     * methods isDone, isCancelled, join, get, and getNow
229 +     */
230 +    public void testCancel() {
231 +        CompletableFuture<Integer> f = new CompletableFuture<>();
232 +        checkIncomplete(f);
233 +        assertTrue(f.cancel(true));
234 +        checkCancelled(f);
235 +    }
236 +
237 +    /**
238 +     * obtrudeValue forces completion with given value
239 +     */
240 +    public void testObtrudeValue() {
241 +        CompletableFuture<Integer> f = new CompletableFuture<>();
242 +        checkIncomplete(f);
243 +        f.complete(one);
244 +        checkCompletedNormally(f, one);
245 +        f.obtrudeValue(three);
246 +        checkCompletedNormally(f, three);
247 +        f.obtrudeValue(two);
248 +        checkCompletedNormally(f, two);
249 +        f = new CompletableFuture<>();
250 +        f.obtrudeValue(three);
251 +        checkCompletedNormally(f, three);
252 +        f.obtrudeValue(null);
253 +        checkCompletedNormally(f, null);
254 +        f = new CompletableFuture<>();
255 +        f.completeExceptionally(new CFException());
256 +        f.obtrudeValue(four);
257 +        checkCompletedNormally(f, four);
258 +    }
259 +
260 +    /**
261 +     * obtrudeException forces completion with given exception
262 +     */
263 +    public void testObtrudeException() {
264 +        CompletableFuture<Integer> f = new CompletableFuture<>();
265 +        checkIncomplete(f);
266 +        f.complete(one);
267 +        checkCompletedNormally(f, one);
268 +        f.obtrudeException(new CFException());
269 +        checkCompletedWithWrappedCFException(f);
270 +        f = new CompletableFuture<>();
271 +        f.obtrudeException(new CFException());
272 +        checkCompletedWithWrappedCFException(f);
273 +        f = new CompletableFuture<>();
274 +        f.completeExceptionally(new CFException());
275 +        f.obtrudeValue(four);
276 +        checkCompletedNormally(f, four);
277 +        f.obtrudeException(new CFException());
278 +        checkCompletedWithWrappedCFException(f);
279 +    }
280 +
281 +    /**
282 +     * getNumberOfDependents returns number of dependent tasks
283 +     */
284 +    public void testGetNumberOfDependents() {
285 +        CompletableFuture<Integer> f = new CompletableFuture<>();
286 +        assertEquals(0, f.getNumberOfDependents());
287 +        CompletableFuture g = f.thenRun(new Noop());
288 +        assertEquals(1, f.getNumberOfDependents());
289 +        assertEquals(0, g.getNumberOfDependents());
290 +        CompletableFuture h = f.thenRun(new Noop());
291 +        assertEquals(2, f.getNumberOfDependents());
292 +        f.complete(1);
293 +        checkCompletedNormally(g, null);
294 +        assertEquals(0, f.getNumberOfDependents());
295 +        assertEquals(0, g.getNumberOfDependents());
296 +    }
297 +
298 +    /**
299 +     * toString indicates current completion state
300 +     */
301      public void testToString() {
302          CompletableFuture<String> f;
303 <        assertTrue(new CompletableFuture<String>().toString()
34 <                   .contains("[Not completed]"));
303 >
304          f = new CompletableFuture<String>();
305 +        assertTrue(f.toString().contains("[Not completed]"));
306 +
307          f.complete("foo");
308          assertTrue(f.toString().contains("[Completed normally]"));
309 +
310          f = new CompletableFuture<String>();
311          f.completeExceptionally(new IndexOutOfBoundsException());
312          assertTrue(f.toString().contains("[Completed exceptionally]"));
313      }
314 +
315 +    /**
316 +     * completedFuture returns a completed CompletableFuture with given value
317 +     */
318 +    public void testCompletedFuture() {
319 +        CompletableFuture<String> f = CompletableFuture.completedFuture("test");
320 +        checkCompletedNormally(f, "test");
321 +    }
322 +
323 +    // Choose non-commutative actions for better coverage
324 +
325 +    // A non-commutative function that handles and produces null values as well.
326 +    static Integer subtract(Integer x, Integer y) {
327 +        return (x == null && y == null) ? null :
328 +            ((x == null) ? 42 : x.intValue())
329 +            - ((y == null) ? 99 : y.intValue());
330 +    }
331 +
332 +    // A function that handles and produces null values as well.
333 +    static Integer inc(Integer x) {
334 +        return (x == null) ? null : x + 1;
335 +    }
336 +
337 +    static final Supplier<Integer> supplyOne =
338 +        () -> Integer.valueOf(1);
339 +    static final Function<Integer, Integer> inc =
340 +        (Integer x) -> Integer.valueOf(x.intValue() + 1);
341 +    static final BiFunction<Integer, Integer, Integer> subtract =
342 +        (Integer x, Integer y) -> subtract(x, y);
343 +    static final class IncAction implements Consumer<Integer> {
344 +        int invocationCount = 0;
345 +        Integer value;
346 +        public void accept(Integer x) {
347 +            invocationCount++;
348 +            value = inc(x);
349 +        }
350 +    }
351 +    static final class IncFunction implements Function<Integer,Integer> {
352 +        int invocationCount = 0;
353 +        Integer value;
354 +        public Integer apply(Integer x) {
355 +            invocationCount++;
356 +            return value = inc(x);
357 +        }
358 +    }
359 +    static final class SubtractAction implements BiConsumer<Integer, Integer> {
360 +        int invocationCount = 0;
361 +        Integer value;
362 +        // Check this action was invoked exactly once when result is computed.
363 +        public void accept(Integer x, Integer y) {
364 +            invocationCount++;
365 +            value = subtract(x, y);
366 +        }
367 +    }
368 +    static final class SubtractFunction implements BiFunction<Integer, Integer, Integer> {
369 +        int invocationCount = 0;
370 +        Integer value;
371 +        // Check this action was invoked exactly once when result is computed.
372 +        public Integer apply(Integer x, Integer y) {
373 +            invocationCount++;
374 +            return value = subtract(x, y);
375 +        }
376 +    }
377 +    static final class Noop implements Runnable {
378 +        int invocationCount = 0;
379 +        public void run() {
380 +            invocationCount++;
381 +        }
382 +    }
383 +
384 +    static final class FailingSupplier implements Supplier<Integer> {
385 +        int invocationCount = 0;
386 +        public Integer get() {
387 +            invocationCount++;
388 +            throw new CFException();
389 +        }
390 +    }
391 +    static final class FailingConsumer implements Consumer<Integer> {
392 +        int invocationCount = 0;
393 +        public void accept(Integer x) {
394 +            invocationCount++;
395 +            throw new CFException();
396 +        }
397 +    }
398 +    static final class FailingBiConsumer implements BiConsumer<Integer, Integer> {
399 +        int invocationCount = 0;
400 +        public void accept(Integer x, Integer y) {
401 +            invocationCount++;
402 +            throw new CFException();
403 +        }
404 +    }
405 +    static final class FailingFunction implements Function<Integer, Integer> {
406 +        int invocationCount = 0;
407 +        public Integer apply(Integer x) {
408 +            invocationCount++;
409 +            throw new CFException();
410 +        }
411 +    }
412 +    static final class FailingBiFunction implements BiFunction<Integer, Integer, Integer> {
413 +        int invocationCount = 0;
414 +        public Integer apply(Integer x, Integer y) {
415 +            invocationCount++;
416 +            throw new CFException();
417 +        }
418 +    }
419 +    static final class 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) f.complete(v1);
987 +
988 +        checkCompletedNormally(g, null);
989 +        checkCompletedNormally(f, v1);
990 +        assertEquals(1, r.invocationCount);
991 +    }}
992 +
993 +    /**
994 +     * thenRun result completes exceptionally after exceptional
995 +     * completion of source
996 +     */
997 +    public void testThenRun_exceptionalCompletion() {
998 +        for (ExecutionMode m : ExecutionMode.values())
999 +        for (boolean createIncomplete : new boolean[] { true, false })
1000 +    {
1001 +        final CFException ex = new CFException();
1002 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1003 +        final Noop r = new Noop();
1004 +        if (!createIncomplete) f.completeExceptionally(ex);
1005 +        final CompletableFuture<Void> g = m.thenRun(f, r);
1006 +        if (createIncomplete) f.completeExceptionally(ex);
1007 +
1008 +        checkCompletedWithWrappedCFException(g, ex);
1009 +        checkCompletedWithWrappedCFException(f, ex);
1010 +        assertEquals(0, r.invocationCount);
1011 +    }}
1012 +
1013 +    /**
1014 +     * thenRun result completes exceptionally if source cancelled
1015 +     */
1016 +    public void testThenRun_sourceCancelled() {
1017 +        for (ExecutionMode m : ExecutionMode.values())
1018 +        for (boolean createIncomplete : new boolean[] { true, false })
1019 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1020 +    {
1021 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1022 +        final Noop r = new Noop();
1023 +        if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
1024 +        final CompletableFuture<Void> g = f.thenRun(r);
1025 +        if (createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
1026 +
1027 +        checkCompletedWithWrappedCancellationException(g);
1028 +        checkCancelled(f);
1029 +        assertEquals(0, r.invocationCount);
1030 +    }}
1031 +
1032 +    /**
1033 +     * thenRun result completes exceptionally if action does
1034 +     */
1035 +    public void testThenRun_actionFailed() {
1036 +        for (ExecutionMode m : ExecutionMode.values())
1037 +        for (boolean createIncomplete : new boolean[] { true, false })
1038 +        for (Integer v1 : new Integer[] { 1, null })
1039 +    {
1040 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1041 +        final FailingRunnable r = new FailingRunnable();
1042 +        if (!createIncomplete) f.complete(v1);
1043 +        final CompletableFuture<Void> g = f.thenRun(r);
1044 +        if (createIncomplete) f.complete(v1);
1045 +
1046 +        checkCompletedWithWrappedCFException(g);
1047 +        checkCompletedNormally(f, v1);
1048 +    }}
1049 +
1050 +    /**
1051 +     * thenApply result completes normally after normal completion of source
1052 +     */
1053 +    public void testThenApply_normalCompletion() {
1054 +        for (ExecutionMode m : ExecutionMode.values())
1055 +        for (boolean createIncomplete : new boolean[] { true, false })
1056 +        for (Integer v1 : new Integer[] { 1, null })
1057 +    {
1058 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1059 +        final IncFunction r = new IncFunction();
1060 +        if (!createIncomplete) f.complete(v1);
1061 +        final CompletableFuture<Integer> g = m.thenApply(f, r);
1062 +        if (createIncomplete) {
1063 +            checkIncomplete(g);
1064 +            f.complete(v1);
1065 +        }
1066 +
1067 +        checkCompletedNormally(g, inc(v1));
1068 +        checkCompletedNormally(f, v1);
1069 +        assertEquals(1, r.invocationCount);
1070 +    }}
1071 +
1072 +    /**
1073 +     * thenApply result completes exceptionally after exceptional
1074 +     * completion of source
1075 +     */
1076 +    public void testThenApply_exceptionalCompletion() {
1077 +        for (ExecutionMode m : ExecutionMode.values())
1078 +        for (boolean createIncomplete : new boolean[] { true, false })
1079 +    {
1080 +        final CFException ex = new CFException();
1081 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1082 +        final IncFunction r = new IncFunction();
1083 +        if (!createIncomplete) f.completeExceptionally(ex);
1084 +        final CompletableFuture<Integer> g = m.thenApply(f, r);
1085 +        if (createIncomplete) f.completeExceptionally(ex);
1086 +
1087 +        checkCompletedWithWrappedCFException(g, ex);
1088 +        checkCompletedWithWrappedCFException(f, ex);
1089 +        assertEquals(0, r.invocationCount);
1090 +    }}
1091 +
1092 +    /**
1093 +     * thenApply result completes exceptionally if source cancelled
1094 +     */
1095 +    public void testThenApply_sourceCancelled() {
1096 +        for (ExecutionMode m : ExecutionMode.values())
1097 +        for (boolean createIncomplete : new boolean[] { true, false })
1098 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1099 +    {
1100 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1101 +        final IncFunction r = new IncFunction();
1102 +        if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
1103 +        final CompletableFuture<Integer> g = f.thenApply(r);
1104 +        if (createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
1105 +
1106 +        checkCompletedWithWrappedCancellationException(g);
1107 +        checkCancelled(f);
1108 +        assertEquals(0, r.invocationCount);
1109 +    }}
1110 +
1111 +    /**
1112 +     * thenApply result completes exceptionally if action does
1113 +     */
1114 +    public void testThenApply_actionFailed() {
1115 +        for (ExecutionMode m : ExecutionMode.values())
1116 +        for (boolean createIncomplete : new boolean[] { true, false })
1117 +        for (Integer v1 : new Integer[] { 1, null })
1118 +    {
1119 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1120 +        final FailingFunction r = new FailingFunction();
1121 +        if (!createIncomplete) f.complete(v1);
1122 +        final CompletableFuture<Integer> g = f.thenApply(r);
1123 +        if (createIncomplete) f.complete(v1);
1124 +
1125 +        checkCompletedWithWrappedCFException(g);
1126 +        checkCompletedNormally(f, v1);
1127 +    }}
1128 +
1129 +    /**
1130 +     * thenAccept result completes normally after normal completion of source
1131 +     */
1132 +    public void testThenAccept_normalCompletion() {
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 IncAction r = new IncAction();
1139 +        if (!createIncomplete) f.complete(v1);
1140 +        final CompletableFuture<Void> g = m.thenAccept(f, r);
1141 +        if (createIncomplete) f.complete(v1);
1142 +
1143 +        checkCompletedNormally(g, null);
1144 +        checkCompletedNormally(f, v1);
1145 +        assertEquals(1, r.invocationCount);
1146 +        assertEquals(inc(v1), r.value);
1147 +    }}
1148 +
1149 +    /**
1150 +     * thenAccept result completes exceptionally after exceptional
1151 +     * completion of source
1152 +     */
1153 +    public void testThenAccept_exceptionalCompletion() {
1154 +        for (ExecutionMode m : ExecutionMode.values())
1155 +        for (boolean createIncomplete : new boolean[] { true, false })
1156 +    {
1157 +        final CFException ex = new CFException();
1158 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1159 +        final IncAction r = new IncAction();
1160 +        if (!createIncomplete) f.completeExceptionally(ex);
1161 +        final CompletableFuture<Void> g = m.thenAccept(f, r);
1162 +        if (createIncomplete) f.completeExceptionally(ex);
1163 +
1164 +        checkCompletedWithWrappedCFException(g, ex);
1165 +        checkCompletedWithWrappedCFException(f, ex);
1166 +        assertEquals(0, r.invocationCount);
1167 +    }}
1168 +
1169 +    /**
1170 +     * thenAccept result completes exceptionally if action does
1171 +     */
1172 +    public void testThenAccept_actionFailed() {
1173 +        for (ExecutionMode m : ExecutionMode.values())
1174 +        for (boolean createIncomplete : new boolean[] { true, false })
1175 +        for (Integer v1 : new Integer[] { 1, null })
1176 +    {
1177 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1178 +        final FailingConsumer r = new FailingConsumer();
1179 +        if (!createIncomplete) f.complete(v1);
1180 +        final CompletableFuture<Void> g = f.thenAccept(r);
1181 +        if (createIncomplete) f.complete(v1);
1182 +
1183 +        checkCompletedWithWrappedCFException(g);
1184 +        checkCompletedNormally(f, v1);
1185 +    }}
1186 +
1187 +    /**
1188 +     * thenAccept result completes exceptionally if source cancelled
1189 +     */
1190 +    public void testThenAccept_sourceCancelled() {
1191 +        for (ExecutionMode m : ExecutionMode.values())
1192 +        for (boolean createIncomplete : new boolean[] { true, false })
1193 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1194 +    {
1195 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1196 +        final IncAction r = new IncAction();
1197 +        if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
1198 +        final CompletableFuture<Void> g = f.thenAccept(r);
1199 +        if (createIncomplete) {
1200 +            checkIncomplete(g);
1201 +            assertTrue(f.cancel(mayInterruptIfRunning));
1202 +        }
1203 +
1204 +        checkCompletedWithWrappedCancellationException(g);
1205 +        checkCancelled(f);
1206 +        assertEquals(0, r.invocationCount);
1207 +    }}
1208 +
1209 +    /**
1210 +     * thenCombine result completes normally after normal completion
1211 +     * of sources
1212 +     */
1213 +    public void testThenCombine_normalCompletion1() {
1214 +        for (boolean createIncomplete : new boolean[] { true, false })
1215 +        for (boolean fFirst : new boolean[] { true, false })
1216 +        for (ExecutionMode m : ExecutionMode.values())
1217 +        for (Integer v1 : new Integer[] { 1, null })
1218 +        for (Integer v2 : new Integer[] { 2, null })
1219 +    {
1220 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1221 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1222 +        final SubtractFunction r = new SubtractFunction();
1223 +        CompletableFuture<Integer> h = null;
1224 +        if (createIncomplete) h = m.thenCombine(f, g, r);
1225 +
1226 +        if (fFirst)
1227 +            f.complete(v1);
1228 +        else
1229 +            g.complete(v2);
1230 +        if (createIncomplete) checkIncomplete(h);
1231 +        assertEquals(0, r.invocationCount);
1232 +        if (!fFirst)
1233 +            f.complete(v1);
1234 +        else
1235 +            g.complete(v2);
1236 +        if (!createIncomplete) h = m.thenCombine(f, g, r);
1237 +
1238 +        checkCompletedNormally(h, subtract(v1, v2));
1239 +        checkCompletedNormally(f, v1);
1240 +        checkCompletedNormally(g, v2);
1241 +        assertEquals(1, r.invocationCount);
1242 +    }}
1243 +
1244 +    /**
1245 +     * thenCombine result completes exceptionally after exceptional
1246 +     * completion of either source
1247 +     */
1248 +    public void testThenCombine_exceptionalCompletion1() {
1249 +        for (ExecutionMode m : ExecutionMode.values())
1250 +        for (Integer v1 : new Integer[] { 1, null })
1251 +    {
1252 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1253 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1254 +        final SubtractFunction r = new SubtractFunction();
1255 +        final CompletableFuture<Integer> h = m.thenCombine(f, g, r);
1256 +        final CFException ex = new CFException();
1257 +
1258 +        f.completeExceptionally(ex);
1259 +        checkIncomplete(h);
1260 +        g.complete(v1);
1261 +
1262 +        checkCompletedWithWrappedCFException(h, ex);
1263 +        checkCompletedWithWrappedCFException(f, ex);
1264 +        assertEquals(0, r.invocationCount);
1265 +        checkCompletedNormally(g, v1);
1266 +    }}
1267 +
1268 +    public void testThenCombine_exceptionalCompletion2() {
1269 +        for (ExecutionMode m : ExecutionMode.values())
1270 +        for (Integer v1 : new Integer[] { 1, null })
1271 +    {
1272 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1273 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1274 +        final SubtractFunction r = new SubtractFunction();
1275 +        final CompletableFuture<Integer> h = m.thenCombine(f, g, r);
1276 +        final CFException ex = new CFException();
1277 +
1278 +        g.completeExceptionally(ex);
1279 +        checkIncomplete(h);
1280 +        f.complete(v1);
1281 +
1282 +        checkCompletedWithWrappedCFException(h, ex);
1283 +        checkCompletedWithWrappedCFException(g, ex);
1284 +        assertEquals(0, r.invocationCount);
1285 +        checkCompletedNormally(f, v1);
1286 +    }}
1287 +
1288 +    public void testThenCombine_exceptionalCompletion3() {
1289 +        for (ExecutionMode m : ExecutionMode.values())
1290 +        for (Integer v1 : new Integer[] { 1, null })
1291 +    {
1292 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1293 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1294 +        final SubtractFunction r = new SubtractFunction();
1295 +        final CFException ex = new CFException();
1296 +
1297 +        g.completeExceptionally(ex);
1298 +        f.complete(v1);
1299 +        final CompletableFuture<Integer> h = m.thenCombine(f, g, r);
1300 +
1301 +        checkCompletedWithWrappedCFException(h, ex);
1302 +        checkCompletedWithWrappedCFException(g, ex);
1303 +        assertEquals(0, r.invocationCount);
1304 +        checkCompletedNormally(f, v1);
1305 +    }}
1306 +
1307 +    public void testThenCombine_exceptionalCompletion4() {
1308 +        for (ExecutionMode m : ExecutionMode.values())
1309 +        for (Integer v1 : new Integer[] { 1, null })
1310 +    {
1311 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1312 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1313 +        final SubtractFunction r = new SubtractFunction();
1314 +        final CFException ex = new CFException();
1315 +
1316 +        f.completeExceptionally(ex);
1317 +        g.complete(v1);
1318 +        final CompletableFuture<Integer> h = m.thenCombine(f, g, r);
1319 +
1320 +        checkCompletedWithWrappedCFException(h, ex);
1321 +        checkCompletedWithWrappedCFException(f, ex);
1322 +        assertEquals(0, r.invocationCount);
1323 +        checkCompletedNormally(g, v1);
1324 +    }}
1325 +
1326 +    /**
1327 +     * thenCombine result completes exceptionally if action does
1328 +     */
1329 +    public void testThenCombine_actionFailed1() {
1330 +        for (ExecutionMode m : ExecutionMode.values())
1331 +        for (Integer v1 : new Integer[] { 1, null })
1332 +        for (Integer v2 : new Integer[] { 2, null })
1333 +    {
1334 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1335 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1336 +        final FailingBiFunction r = new FailingBiFunction();
1337 +        final CompletableFuture<Integer> h = m.thenCombine(f, g, r);
1338 +
1339 +        f.complete(v1);
1340 +        checkIncomplete(h);
1341 +        g.complete(v2);
1342 +
1343 +        checkCompletedWithWrappedCFException(h);
1344 +        checkCompletedNormally(f, v1);
1345 +        checkCompletedNormally(g, v2);
1346 +    }}
1347 +
1348 +    public void testThenCombine_actionFailed2() {
1349 +        for (ExecutionMode m : ExecutionMode.values())
1350 +        for (Integer v1 : new Integer[] { 1, null })
1351 +        for (Integer v2 : new Integer[] { 2, null })
1352 +    {
1353 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1354 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1355 +        final FailingBiFunction r = new FailingBiFunction();
1356 +        final CompletableFuture<Integer> h = m.thenCombine(f, g, r);
1357 +
1358 +        g.complete(v2);
1359 +        checkIncomplete(h);
1360 +        f.complete(v1);
1361 +
1362 +        checkCompletedWithWrappedCFException(h);
1363 +        checkCompletedNormally(f, v1);
1364 +        checkCompletedNormally(g, v2);
1365 +    }}
1366 +
1367 +    /**
1368 +     * thenCombine result completes exceptionally if either source cancelled
1369 +     */
1370 +    public void testThenCombine_sourceCancelled1() {
1371 +        for (ExecutionMode m : ExecutionMode.values())
1372 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1373 +        for (Integer v1 : new Integer[] { 1, null })
1374 +    {
1375 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1376 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1377 +        final SubtractFunction r = new SubtractFunction();
1378 +        final CompletableFuture<Integer> h = m.thenCombine(f, g, r);
1379 +
1380 +        assertTrue(f.cancel(mayInterruptIfRunning));
1381 +        checkIncomplete(h);
1382 +        g.complete(v1);
1383 +
1384 +        checkCompletedWithWrappedCancellationException(h);
1385 +        checkCancelled(f);
1386 +        assertEquals(0, r.invocationCount);
1387 +        checkCompletedNormally(g, v1);
1388 +    }}
1389 +
1390 +    public void testThenCombine_sourceCancelled2() {
1391 +        for (ExecutionMode m : ExecutionMode.values())
1392 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1393 +        for (Integer v1 : new Integer[] { 1, null })
1394 +    {
1395 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1396 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1397 +        final SubtractFunction r = new SubtractFunction();
1398 +        final CompletableFuture<Integer> h = m.thenCombine(f, g, r);
1399 +
1400 +        assertTrue(g.cancel(mayInterruptIfRunning));
1401 +        checkIncomplete(h);
1402 +        f.complete(v1);
1403 +
1404 +        checkCompletedWithWrappedCancellationException(h);
1405 +        checkCancelled(g);
1406 +        assertEquals(0, r.invocationCount);
1407 +        checkCompletedNormally(f, v1);
1408 +    }}
1409 +
1410 +    public void testThenCombine_sourceCancelled3() {
1411 +        for (ExecutionMode m : ExecutionMode.values())
1412 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1413 +        for (Integer v1 : new Integer[] { 1, null })
1414 +    {
1415 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1416 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1417 +        final SubtractFunction r = new SubtractFunction();
1418 +
1419 +        assertTrue(g.cancel(mayInterruptIfRunning));
1420 +        f.complete(v1);
1421 +        final CompletableFuture<Integer> h = m.thenCombine(f, g, r);
1422 +
1423 +        checkCompletedWithWrappedCancellationException(h);
1424 +        checkCancelled(g);
1425 +        assertEquals(0, r.invocationCount);
1426 +        checkCompletedNormally(f, v1);
1427 +    }}
1428 +
1429 +    public void testThenCombine_sourceCancelled4() {
1430 +        for (ExecutionMode m : ExecutionMode.values())
1431 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1432 +        for (Integer v1 : new Integer[] { 1, null })
1433 +    {
1434 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1435 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1436 +        final SubtractFunction r = new SubtractFunction();
1437 +
1438 +        assertTrue(f.cancel(mayInterruptIfRunning));
1439 +        g.complete(v1);
1440 +        final CompletableFuture<Integer> h = m.thenCombine(f, g, r);
1441 +
1442 +        checkCompletedWithWrappedCancellationException(h);
1443 +        checkCancelled(f);
1444 +        assertEquals(0, r.invocationCount);
1445 +        checkCompletedNormally(g, v1);
1446 +    }}
1447 +
1448 +    /**
1449 +     * thenAcceptBoth result completes normally after normal
1450 +     * completion of sources
1451 +     */
1452 +    public void testThenAcceptBoth_normalCompletion1() {
1453 +        for (ExecutionMode m : ExecutionMode.values())
1454 +        for (Integer v1 : new Integer[] { 1, null })
1455 +        for (Integer v2 : new Integer[] { 2, null })
1456 +    {
1457 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1458 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1459 +        final SubtractAction r = new SubtractAction();
1460 +        final CompletableFuture<Void> h = m.thenAcceptBoth(f, g, r);
1461 +
1462 +        f.complete(v1);
1463 +        checkIncomplete(h);
1464 +        assertEquals(0, r.invocationCount);
1465 +        g.complete(v2);
1466 +
1467 +        checkCompletedNormally(h, null);
1468 +        assertEquals(subtract(v1, v2), r.value);
1469 +        checkCompletedNormally(f, v1);
1470 +        checkCompletedNormally(g, v2);
1471 +    }}
1472 +
1473 +    public void testThenAcceptBoth_normalCompletion2() {
1474 +        for (ExecutionMode m : ExecutionMode.values())
1475 +        for (Integer v1 : new Integer[] { 1, null })
1476 +        for (Integer v2 : new Integer[] { 2, null })
1477 +    {
1478 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1479 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1480 +        final SubtractAction r = new SubtractAction();
1481 +        final CompletableFuture<Void> h = m.thenAcceptBoth(f, g, r);
1482 +
1483 +        g.complete(v2);
1484 +        checkIncomplete(h);
1485 +        assertEquals(0, r.invocationCount);
1486 +        f.complete(v1);
1487 +
1488 +        checkCompletedNormally(h, null);
1489 +        assertEquals(subtract(v1, v2), r.value);
1490 +        checkCompletedNormally(f, v1);
1491 +        checkCompletedNormally(g, v2);
1492 +    }}
1493 +
1494 +    public void testThenAcceptBoth_normalCompletion3() {
1495 +        for (ExecutionMode m : ExecutionMode.values())
1496 +        for (Integer v1 : new Integer[] { 1, null })
1497 +        for (Integer v2 : new Integer[] { 2, null })
1498 +    {
1499 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1500 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1501 +        final SubtractAction r = new SubtractAction();
1502 +
1503 +        g.complete(v2);
1504 +        f.complete(v1);
1505 +        final CompletableFuture<Void> h = m.thenAcceptBoth(f, g, r);
1506 +
1507 +        checkCompletedNormally(h, null);
1508 +        assertEquals(subtract(v1, v2), r.value);
1509 +        checkCompletedNormally(f, v1);
1510 +        checkCompletedNormally(g, v2);
1511 +    }}
1512 +
1513 +    public void testThenAcceptBoth_normalCompletion4() {
1514 +        for (ExecutionMode m : ExecutionMode.values())
1515 +        for (Integer v1 : new Integer[] { 1, null })
1516 +        for (Integer v2 : new Integer[] { 2, null })
1517 +    {
1518 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1519 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1520 +        final SubtractAction r = new SubtractAction();
1521 +
1522 +        f.complete(v1);
1523 +        g.complete(v2);
1524 +        final CompletableFuture<Void> h = m.thenAcceptBoth(f, g, r);
1525 +
1526 +        checkCompletedNormally(h, null);
1527 +        assertEquals(subtract(v1, v2), r.value);
1528 +        checkCompletedNormally(f, v1);
1529 +        checkCompletedNormally(g, v2);
1530 +    }}
1531 +
1532 +    /**
1533 +     * thenAcceptBoth result completes exceptionally after exceptional
1534 +     * completion of either source
1535 +     */
1536 +    public void testThenAcceptBoth_exceptionalCompletion1() {
1537 +        for (ExecutionMode m : ExecutionMode.values())
1538 +        for (Integer v1 : new Integer[] { 1, null })
1539 +    {
1540 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1541 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1542 +        final SubtractAction r = new SubtractAction();
1543 +        final CompletableFuture<Void> h = m.thenAcceptBoth(f, g, r);
1544 +        final CFException ex = new CFException();
1545 +
1546 +        f.completeExceptionally(ex);
1547 +        checkIncomplete(h);
1548 +        g.complete(v1);
1549 +
1550 +        checkCompletedWithWrappedCFException(h, ex);
1551 +        checkCompletedWithWrappedCFException(f, ex);
1552 +        assertEquals(0, r.invocationCount);
1553 +        checkCompletedNormally(g, v1);
1554 +    }}
1555 +
1556 +    public void testThenAcceptBoth_exceptionalCompletion2() {
1557 +        for (ExecutionMode m : ExecutionMode.values())
1558 +        for (Integer v1 : new Integer[] { 1, null })
1559 +    {
1560 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1561 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1562 +        final SubtractAction r = new SubtractAction();
1563 +        final CompletableFuture<Void> h = m.thenAcceptBoth(f, g, r);
1564 +        final CFException ex = new CFException();
1565 +
1566 +        g.completeExceptionally(ex);
1567 +        checkIncomplete(h);
1568 +        f.complete(v1);
1569 +
1570 +        checkCompletedWithWrappedCFException(h, ex);
1571 +        checkCompletedWithWrappedCFException(g, ex);
1572 +        assertEquals(0, r.invocationCount);
1573 +        checkCompletedNormally(f, v1);
1574 +    }}
1575 +
1576 +    public void testThenAcceptBoth_exceptionalCompletion3() {
1577 +        for (ExecutionMode m : ExecutionMode.values())
1578 +        for (Integer v1 : new Integer[] { 1, null })
1579 +    {
1580 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1581 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1582 +        final SubtractAction r = new SubtractAction();
1583 +        final CFException ex = new CFException();
1584 +
1585 +        g.completeExceptionally(ex);
1586 +        f.complete(v1);
1587 +        final CompletableFuture<Void> h = m.thenAcceptBoth(f, g, r);
1588 +
1589 +        checkCompletedWithWrappedCFException(h, ex);
1590 +        checkCompletedWithWrappedCFException(g, ex);
1591 +        assertEquals(0, r.invocationCount);
1592 +        checkCompletedNormally(f, v1);
1593 +    }}
1594 +
1595 +    public void testThenAcceptBoth_exceptionalCompletion4() {
1596 +        for (ExecutionMode m : ExecutionMode.values())
1597 +        for (Integer v1 : new Integer[] { 1, null })
1598 +    {
1599 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1600 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1601 +        final SubtractAction r = new SubtractAction();
1602 +        final CFException ex = new CFException();
1603 +
1604 +        f.completeExceptionally(ex);
1605 +        g.complete(v1);
1606 +        final CompletableFuture<Void> h = m.thenAcceptBoth(f, g, r);
1607 +
1608 +        checkCompletedWithWrappedCFException(h, ex);
1609 +        checkCompletedWithWrappedCFException(f, ex);
1610 +        assertEquals(0, r.invocationCount);
1611 +        checkCompletedNormally(g, v1);
1612 +    }}
1613 +
1614 +    /**
1615 +     * thenAcceptBoth result completes exceptionally if action does
1616 +     */
1617 +    public void testThenAcceptBoth_actionFailed1() {
1618 +        for (ExecutionMode m : ExecutionMode.values())
1619 +        for (Integer v1 : new Integer[] { 1, null })
1620 +        for (Integer v2 : new Integer[] { 2, null })
1621 +    {
1622 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1623 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1624 +        final FailingBiConsumer r = new FailingBiConsumer();
1625 +        final CompletableFuture<Void> h = m.thenAcceptBoth(f, g, r);
1626 +
1627 +        f.complete(v1);
1628 +        checkIncomplete(h);
1629 +        g.complete(v2);
1630 +
1631 +        checkCompletedWithWrappedCFException(h);
1632 +        checkCompletedNormally(f, v1);
1633 +        checkCompletedNormally(g, v2);
1634 +    }}
1635 +
1636 +    public void testThenAcceptBoth_actionFailed2() {
1637 +        for (ExecutionMode m : ExecutionMode.values())
1638 +        for (Integer v1 : new Integer[] { 1, null })
1639 +        for (Integer v2 : new Integer[] { 2, null })
1640 +    {
1641 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1642 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1643 +        final FailingBiConsumer r = new FailingBiConsumer();
1644 +        final CompletableFuture<Void> h = m.thenAcceptBoth(f, g, r);
1645 +
1646 +        g.complete(v2);
1647 +        checkIncomplete(h);
1648 +        f.complete(v1);
1649 +
1650 +        checkCompletedWithWrappedCFException(h);
1651 +        checkCompletedNormally(f, v1);
1652 +        checkCompletedNormally(g, v2);
1653 +    }}
1654 +
1655 +    /**
1656 +     * thenAcceptBoth result completes exceptionally if either source cancelled
1657 +     */
1658 +    public void testThenAcceptBoth_sourceCancelled1() {
1659 +        for (ExecutionMode m : ExecutionMode.values())
1660 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1661 +        for (Integer v1 : new Integer[] { 1, null })
1662 +    {
1663 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1664 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1665 +        final SubtractAction r = new SubtractAction();
1666 +        final CompletableFuture<Void> h = m.thenAcceptBoth(f, g, r);
1667 +
1668 +        assertTrue(f.cancel(mayInterruptIfRunning));
1669 +        checkIncomplete(h);
1670 +        g.complete(v1);
1671 +
1672 +        checkCompletedWithWrappedCancellationException(h);
1673 +        checkCancelled(f);
1674 +        assertEquals(0, r.invocationCount);
1675 +        checkCompletedNormally(g, v1);
1676 +    }}
1677 +
1678 +    public void testThenAcceptBoth_sourceCancelled2() {
1679 +        for (ExecutionMode m : ExecutionMode.values())
1680 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1681 +        for (Integer v1 : new Integer[] { 1, null })
1682 +    {
1683 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1684 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1685 +        final SubtractAction r = new SubtractAction();
1686 +        final CompletableFuture<Void> h = m.thenAcceptBoth(f, g, r);
1687 +
1688 +        assertTrue(g.cancel(mayInterruptIfRunning));
1689 +        checkIncomplete(h);
1690 +        f.complete(v1);
1691 +
1692 +        checkCompletedWithWrappedCancellationException(h);
1693 +        checkCancelled(g);
1694 +        assertEquals(0, r.invocationCount);
1695 +        checkCompletedNormally(f, v1);
1696 +    }}
1697 +
1698 +    public void testThenAcceptBoth_sourceCancelled3() {
1699 +        for (ExecutionMode m : ExecutionMode.values())
1700 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1701 +        for (Integer v1 : new Integer[] { 1, null })
1702 +    {
1703 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1704 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1705 +        final SubtractAction r = new SubtractAction();
1706 +
1707 +        assertTrue(g.cancel(mayInterruptIfRunning));
1708 +        f.complete(v1);
1709 +        final CompletableFuture<Void> h = m.thenAcceptBoth(f, g, r);
1710 +
1711 +        checkCompletedWithWrappedCancellationException(h);
1712 +        checkCancelled(g);
1713 +        assertEquals(0, r.invocationCount);
1714 +        checkCompletedNormally(f, v1);
1715 +    }}
1716 +
1717 +    public void testThenAcceptBoth_sourceCancelled4() {
1718 +        for (ExecutionMode m : ExecutionMode.values())
1719 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1720 +        for (Integer v1 : new Integer[] { 1, null })
1721 +    {
1722 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1723 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1724 +        final SubtractAction r = new SubtractAction();
1725 +
1726 +        assertTrue(f.cancel(mayInterruptIfRunning));
1727 +        g.complete(v1);
1728 +        final CompletableFuture<Void> h = m.thenAcceptBoth(f, g, r);
1729 +
1730 +        checkCompletedWithWrappedCancellationException(h);
1731 +        checkCancelled(f);
1732 +        assertEquals(0, r.invocationCount);
1733 +        checkCompletedNormally(g, v1);
1734 +    }}
1735 +
1736 +    /**
1737 +     * runAfterBoth result completes normally after normal
1738 +     * completion of sources
1739 +     */
1740 +    public void testRunAfterBoth_normalCompletion1() {
1741 +        for (ExecutionMode m : ExecutionMode.values())
1742 +        for (Integer v1 : new Integer[] { 1, null })
1743 +        for (Integer v2 : new Integer[] { 2, null })
1744 +    {
1745 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1746 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1747 +        final Noop r = new Noop();
1748 +        final CompletableFuture<Void> h = m.runAfterBoth(f, g, r);
1749 +
1750 +        f.complete(v1);
1751 +        checkIncomplete(h);
1752 +        assertEquals(0, r.invocationCount);
1753 +        g.complete(v2);
1754 +
1755 +        checkCompletedNormally(h, null);
1756 +        assertEquals(1, r.invocationCount);
1757 +        checkCompletedNormally(f, v1);
1758 +        checkCompletedNormally(g, v2);
1759 +    }}
1760 +
1761 +    public void testRunAfterBoth_normalCompletion2() {
1762 +        for (ExecutionMode m : ExecutionMode.values())
1763 +        for (Integer v1 : new Integer[] { 1, null })
1764 +        for (Integer v2 : new Integer[] { 2, null })
1765 +    {
1766 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1767 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1768 +        final Noop r = new Noop();
1769 +        final CompletableFuture<Void> h = m.runAfterBoth(f, g, r);
1770 +
1771 +        g.complete(v2);
1772 +        checkIncomplete(h);
1773 +        assertEquals(0, r.invocationCount);
1774 +        f.complete(v1);
1775 +
1776 +        checkCompletedNormally(h, null);
1777 +        assertEquals(1, r.invocationCount);
1778 +        checkCompletedNormally(f, v1);
1779 +        checkCompletedNormally(g, v2);
1780 +    }}
1781 +
1782 +    public void testRunAfterBoth_normalCompletion3() {
1783 +        for (ExecutionMode m : ExecutionMode.values())
1784 +        for (Integer v1 : new Integer[] { 1, null })
1785 +        for (Integer v2 : new Integer[] { 2, null })
1786 +    {
1787 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1788 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1789 +        final Noop r = new Noop();
1790 +
1791 +        g.complete(v2);
1792 +        f.complete(v1);
1793 +        final CompletableFuture<Void> h = m.runAfterBoth(f, g, r);
1794 +
1795 +        checkCompletedNormally(h, null);
1796 +        assertEquals(1, r.invocationCount);
1797 +        checkCompletedNormally(f, v1);
1798 +        checkCompletedNormally(g, v2);
1799 +    }}
1800 +
1801 +    public void testRunAfterBoth_normalCompletion4() {
1802 +        for (ExecutionMode m : ExecutionMode.values())
1803 +        for (Integer v1 : new Integer[] { 1, null })
1804 +        for (Integer v2 : new Integer[] { 2, null })
1805 +    {
1806 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1807 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1808 +        final Noop r = new Noop();
1809 +
1810 +        f.complete(v1);
1811 +        g.complete(v2);
1812 +        final CompletableFuture<Void> h = m.runAfterBoth(f, g, r);
1813 +
1814 +        checkCompletedNormally(h, null);
1815 +        assertEquals(1, r.invocationCount);
1816 +        checkCompletedNormally(f, v1);
1817 +        checkCompletedNormally(g, v2);
1818 +    }}
1819 +
1820 +    /**
1821 +     * runAfterBoth result completes exceptionally after exceptional
1822 +     * completion of either source
1823 +     */
1824 +    public void testRunAfterBoth_exceptionalCompletion1() {
1825 +        for (ExecutionMode m : ExecutionMode.values())
1826 +        for (Integer v1 : new Integer[] { 1, null })
1827 +    {
1828 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1829 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1830 +        final Noop r = new Noop();
1831 +        final CompletableFuture<Void> h = m.runAfterBoth(f, g, r);
1832 +        final CFException ex = new CFException();
1833 +
1834 +        f.completeExceptionally(ex);
1835 +        checkIncomplete(h);
1836 +        g.complete(v1);
1837 +
1838 +        checkCompletedWithWrappedCFException(h, ex);
1839 +        checkCompletedWithWrappedCFException(f, ex);
1840 +        assertEquals(0, r.invocationCount);
1841 +        checkCompletedNormally(g, v1);
1842 +    }}
1843 +
1844 +    public void testRunAfterBoth_exceptionalCompletion2() {
1845 +        for (ExecutionMode m : ExecutionMode.values())
1846 +        for (Integer v1 : new Integer[] { 1, null })
1847 +    {
1848 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1849 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1850 +        final Noop r = new Noop();
1851 +        final CompletableFuture<Void> h = m.runAfterBoth(f, g, r);
1852 +        final CFException ex = new CFException();
1853 +
1854 +        g.completeExceptionally(ex);
1855 +        checkIncomplete(h);
1856 +        f.complete(v1);
1857 +
1858 +        checkCompletedWithWrappedCFException(h, ex);
1859 +        checkCompletedWithWrappedCFException(g, ex);
1860 +        assertEquals(0, r.invocationCount);
1861 +        checkCompletedNormally(f, v1);
1862 +    }}
1863 +
1864 +    public void testRunAfterBoth_exceptionalCompletion3() {
1865 +        for (ExecutionMode m : ExecutionMode.values())
1866 +        for (Integer v1 : new Integer[] { 1, null })
1867 +    {
1868 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1869 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1870 +        final Noop r = new Noop();
1871 +        final CFException ex = new CFException();
1872 +
1873 +        g.completeExceptionally(ex);
1874 +        f.complete(v1);
1875 +        final CompletableFuture<Void> h = m.runAfterBoth(f, g, r);
1876 +
1877 +        checkCompletedWithWrappedCFException(h, ex);
1878 +        checkCompletedWithWrappedCFException(g, ex);
1879 +        assertEquals(0, r.invocationCount);
1880 +        checkCompletedNormally(f, v1);
1881 +    }}
1882 +
1883 +    public void testRunAfterBoth_exceptionalCompletion4() {
1884 +        for (ExecutionMode m : ExecutionMode.values())
1885 +        for (Integer v1 : new Integer[] { 1, null })
1886 +    {
1887 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1888 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1889 +        final Noop r = new Noop();
1890 +        final CFException ex = new CFException();
1891 +
1892 +        f.completeExceptionally(ex);
1893 +        g.complete(v1);
1894 +        final CompletableFuture<Void> h = m.runAfterBoth(f, g, r);
1895 +
1896 +        checkCompletedWithWrappedCFException(h, ex);
1897 +        checkCompletedWithWrappedCFException(f, ex);
1898 +        assertEquals(0, r.invocationCount);
1899 +        checkCompletedNormally(g, v1);
1900 +    }}
1901 +
1902 +    /**
1903 +     * runAfterBoth result completes exceptionally if action does
1904 +     */
1905 +    public void testRunAfterBoth_actionFailed1() {
1906 +        for (ExecutionMode m : ExecutionMode.values())
1907 +        for (Integer v1 : new Integer[] { 1, null })
1908 +        for (Integer v2 : new Integer[] { 2, null })
1909 +    {
1910 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1911 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1912 +        final FailingRunnable r = new FailingRunnable();
1913 +        final CompletableFuture<Void> h = m.runAfterBoth(f, g, r);
1914 +
1915 +        f.complete(v1);
1916 +        checkIncomplete(h);
1917 +        g.complete(v2);
1918 +
1919 +        checkCompletedWithWrappedCFException(h);
1920 +        checkCompletedNormally(f, v1);
1921 +        checkCompletedNormally(g, v2);
1922 +    }}
1923 +
1924 +    public void testRunAfterBoth_actionFailed2() {
1925 +        for (ExecutionMode m : ExecutionMode.values())
1926 +        for (Integer v1 : new Integer[] { 1, null })
1927 +        for (Integer v2 : new Integer[] { 2, null })
1928 +    {
1929 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1930 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1931 +        final FailingRunnable r = new FailingRunnable();
1932 +        final CompletableFuture<Void> h = m.runAfterBoth(f, g, r);
1933 +
1934 +        g.complete(v2);
1935 +        checkIncomplete(h);
1936 +        f.complete(v1);
1937 +
1938 +        checkCompletedWithWrappedCFException(h);
1939 +        checkCompletedNormally(f, v1);
1940 +        checkCompletedNormally(g, v2);
1941 +    }}
1942 +
1943 +    /**
1944 +     * runAfterBoth result completes exceptionally if either source cancelled
1945 +     */
1946 +    public void testRunAfterBoth_sourceCancelled1() {
1947 +        for (ExecutionMode m : ExecutionMode.values())
1948 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1949 +        for (Integer v1 : new Integer[] { 1, null })
1950 +    {
1951 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1952 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1953 +        final Noop r = new Noop();
1954 +        final CompletableFuture<Void> h = m.runAfterBoth(f, g, r);
1955 +
1956 +        assertTrue(f.cancel(mayInterruptIfRunning));
1957 +        checkIncomplete(h);
1958 +        g.complete(v1);
1959 +
1960 +        checkCompletedWithWrappedCancellationException(h);
1961 +        checkCancelled(f);
1962 +        assertEquals(0, r.invocationCount);
1963 +        checkCompletedNormally(g, v1);
1964 +    }}
1965 +
1966 +    public void testRunAfterBoth_sourceCancelled2() {
1967 +        for (ExecutionMode m : ExecutionMode.values())
1968 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1969 +        for (Integer v1 : new Integer[] { 1, null })
1970 +    {
1971 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1972 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1973 +        final Noop r = new Noop();
1974 +        final CompletableFuture<Void> h = m.runAfterBoth(f, g, r);
1975 +
1976 +        assertTrue(g.cancel(mayInterruptIfRunning));
1977 +        checkIncomplete(h);
1978 +        f.complete(v1);
1979 +
1980 +        checkCompletedWithWrappedCancellationException(h);
1981 +        checkCancelled(g);
1982 +        assertEquals(0, r.invocationCount);
1983 +        checkCompletedNormally(f, v1);
1984 +    }}
1985 +
1986 +    public void testRunAfterBoth_sourceCancelled3() {
1987 +        for (ExecutionMode m : ExecutionMode.values())
1988 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1989 +        for (Integer v1 : new Integer[] { 1, null })
1990 +    {
1991 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1992 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1993 +        final Noop r = new Noop();
1994 +
1995 +        assertTrue(g.cancel(mayInterruptIfRunning));
1996 +        f.complete(v1);
1997 +        final CompletableFuture<Void> h = m.runAfterBoth(f, g, r);
1998 +
1999 +        checkCompletedWithWrappedCancellationException(h);
2000 +        checkCancelled(g);
2001 +        assertEquals(0, r.invocationCount);
2002 +        checkCompletedNormally(f, v1);
2003 +    }}
2004 +
2005 +    public void testRunAfterBoth_sourceCancelled4() {
2006 +        for (ExecutionMode m : ExecutionMode.values())
2007 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2008 +        for (Integer v1 : new Integer[] { 1, null })
2009 +    {
2010 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2011 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2012 +        final Noop r = new Noop();
2013 +
2014 +        assertTrue(f.cancel(mayInterruptIfRunning));
2015 +        g.complete(v1);
2016 +        final CompletableFuture<Void> h = m.runAfterBoth(f, g, r);
2017 +
2018 +        checkCompletedWithWrappedCancellationException(h);
2019 +        checkCancelled(f);
2020 +        assertEquals(0, r.invocationCount);
2021 +        checkCompletedNormally(g, v1);
2022 +    }}
2023 +
2024 +    /**
2025 +     * applyToEither result completes normally after normal completion
2026 +     * of either source
2027 +     */
2028 +    public void testApplyToEither_normalCompletion1() {
2029 +        for (ExecutionMode m : ExecutionMode.values())
2030 +        for (Integer v1 : new Integer[] { 1, null })
2031 +        for (Integer v2 : new Integer[] { 2, null })
2032 +    {
2033 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2034 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2035 +        final IncFunction r = new IncFunction();
2036 +        final CompletableFuture<Integer> h = m.applyToEither(f, g, r);
2037 +
2038 +        f.complete(v1);
2039 +        checkCompletedNormally(h, inc(v1));
2040 +        g.complete(v2);
2041 +
2042 +        checkCompletedNormally(f, v1);
2043 +        checkCompletedNormally(g, v2);
2044 +        checkCompletedNormally(h, inc(v1));
2045 +    }}
2046 +
2047 +    public void testApplyToEither_normalCompletion2() {
2048 +        for (ExecutionMode m : ExecutionMode.values())
2049 +        for (Integer v1 : new Integer[] { 1, null })
2050 +        for (Integer v2 : new Integer[] { 2, null })
2051 +    {
2052 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2053 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2054 +        final IncFunction r = new IncFunction();
2055 +        final CompletableFuture<Integer> h = m.applyToEither(f, g, r);
2056 +
2057 +        g.complete(v2);
2058 +        checkCompletedNormally(h, inc(v2));
2059 +        f.complete(v1);
2060 +
2061 +        checkCompletedNormally(f, v1);
2062 +        checkCompletedNormally(g, v2);
2063 +        checkCompletedNormally(h, inc(v2));
2064 +        }}
2065 +
2066 +    public void testApplyToEither_normalCompletion3() {
2067 +        for (ExecutionMode m : ExecutionMode.values())
2068 +        for (Integer v1 : new Integer[] { 1, null })
2069 +        for (Integer v2 : new Integer[] { 2, null })
2070 +    {
2071 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2072 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2073 +        final IncFunction r = new IncFunction();
2074 +
2075 +        f.complete(v1);
2076 +        g.complete(v2);
2077 +        final CompletableFuture<Integer> h = m.applyToEither(f, g, r);
2078 +
2079 +        checkCompletedNormally(f, v1);
2080 +        checkCompletedNormally(g, v2);
2081 +
2082 +        // unspecified behavior
2083 +        assertTrue(Objects.equals(h.join(), inc(v1)) ||
2084 +                   Objects.equals(h.join(), inc(v2)));
2085 +        assertEquals(1, r.invocationCount);
2086 +    }}
2087 +
2088 +    /**
2089 +     * applyToEither result completes exceptionally after exceptional
2090 +     * completion of either source
2091 +     */
2092 +    public void testApplyToEither_exceptionalCompletion1() {
2093 +        for (ExecutionMode m : ExecutionMode.values())
2094 +        for (Integer v1 : new Integer[] { 1, null })
2095 +    {
2096 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2097 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2098 +        final IncFunction r = new IncFunction();
2099 +        final CompletableFuture<Integer> h = m.applyToEither(f, g, r);
2100 +        final CFException ex = new CFException();
2101 +
2102 +        f.completeExceptionally(ex);
2103 +        checkCompletedWithWrappedCFException(h, ex);
2104 +        g.complete(v1);
2105 +
2106 +        assertEquals(0, r.invocationCount);
2107 +        checkCompletedNormally(g, v1);
2108 +        checkCompletedWithWrappedCFException(f, ex);
2109 +        checkCompletedWithWrappedCFException(h, ex);
2110 +    }}
2111 +
2112 +    public void testApplyToEither_exceptionalCompletion2() {
2113 +        for (ExecutionMode m : ExecutionMode.values())
2114 +        for (Integer v1 : new Integer[] { 1, null })
2115 +    {
2116 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2117 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2118 +        final IncFunction r = new IncFunction();
2119 +        final CompletableFuture<Integer> h = m.applyToEither(f, g, r);
2120 +        final CFException ex = new CFException();
2121 +
2122 +        g.completeExceptionally(ex);
2123 +        checkCompletedWithWrappedCFException(h, ex);
2124 +        f.complete(v1);
2125 +
2126 +        assertEquals(0, r.invocationCount);
2127 +        checkCompletedNormally(f, v1);
2128 +        checkCompletedWithWrappedCFException(g, ex);
2129 +        checkCompletedWithWrappedCFException(h, ex);
2130 +    }}
2131 +
2132 +    public void testApplyToEither_exceptionalCompletion3() {
2133 +        for (ExecutionMode m : ExecutionMode.values())
2134 +        for (Integer v1 : new Integer[] { 1, null })
2135 +    {
2136 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2137 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2138 +        final IncFunction r = new IncFunction();
2139 +        final CFException ex = new CFException();
2140 +
2141 +        g.completeExceptionally(ex);
2142 +        f.complete(v1);
2143 +        final CompletableFuture<Integer> h = m.applyToEither(f, g, r);
2144 +
2145 +        // unspecified behavior
2146 +        Integer v;
2147 +        try {
2148 +            assertEquals(inc(v1), h.join());
2149 +            assertEquals(1, r.invocationCount);
2150 +        } catch (CompletionException ok) {
2151 +            checkCompletedWithWrappedCFException(h, ex);
2152 +            assertEquals(0, r.invocationCount);
2153 +        }
2154 +
2155 +        checkCompletedWithWrappedCFException(g, ex);
2156 +        checkCompletedNormally(f, v1);
2157 +    }}
2158 +
2159 +    public void testApplyToEither_exceptionalCompletion4() {
2160 +        for (ExecutionMode m : ExecutionMode.values())
2161 +        for (Integer v1 : new Integer[] { 1, null })
2162 +    {
2163 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2164 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2165 +        final IncFunction r = new IncFunction();
2166 +        final CFException ex = new CFException();
2167 +
2168 +        f.completeExceptionally(ex);
2169 +        g.complete(v1);
2170 +        final CompletableFuture<Integer> h = m.applyToEither(f, g, r);
2171 +
2172 +        // unspecified behavior
2173 +        Integer v;
2174 +        try {
2175 +            assertEquals(inc(v1), h.join());
2176 +            assertEquals(1, r.invocationCount);
2177 +        } catch (CompletionException ok) {
2178 +            checkCompletedWithWrappedCFException(h, ex);
2179 +            assertEquals(0, r.invocationCount);
2180 +        }
2181 +
2182 +        checkCompletedWithWrappedCFException(f, ex);
2183 +        checkCompletedNormally(g, v1);
2184 +    }}
2185 +
2186 +    /**
2187 +     * applyToEither result completes exceptionally if action does
2188 +     */
2189 +    public void testApplyToEither_actionFailed1() {
2190 +        for (ExecutionMode m : ExecutionMode.values())
2191 +        for (Integer v1 : new Integer[] { 1, null })
2192 +        for (Integer v2 : new Integer[] { 2, null })
2193 +    {
2194 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2195 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2196 +        final FailingFunction r = new FailingFunction();
2197 +        final CompletableFuture<Integer> h = m.applyToEither(f, g, r);
2198 +
2199 +        f.complete(v1);
2200 +        checkCompletedWithWrappedCFException(h);
2201 +        g.complete(v2);
2202 +        checkCompletedNormally(f, v1);
2203 +        checkCompletedNormally(g, v2);
2204 +    }}
2205 +
2206 +    public void testApplyToEither_actionFailed2() {
2207 +        for (ExecutionMode m : ExecutionMode.values())
2208 +        for (Integer v1 : new Integer[] { 1, null })
2209 +        for (Integer v2 : new Integer[] { 2, null })
2210 +    {
2211 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2212 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2213 +        final FailingFunction r = new FailingFunction();
2214 +        final CompletableFuture<Integer> h = m.applyToEither(f, g, r);
2215 +
2216 +        g.complete(v2);
2217 +        checkCompletedWithWrappedCFException(h);
2218 +        f.complete(v1);
2219 +        checkCompletedNormally(f, v1);
2220 +        checkCompletedNormally(g, v2);
2221 +    }}
2222 +
2223 +    /**
2224 +     * applyToEither result completes exceptionally if either source cancelled
2225 +     */
2226 +    public void testApplyToEither_sourceCancelled1() {
2227 +        for (ExecutionMode m : ExecutionMode.values())
2228 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2229 +        for (Integer v1 : new Integer[] { 1, null })
2230 +    {
2231 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2232 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2233 +        final IncFunction r = new IncFunction();
2234 +        final CompletableFuture<Integer> h = m.applyToEither(f, g, r);
2235 +
2236 +        assertTrue(f.cancel(mayInterruptIfRunning));
2237 +        checkCompletedWithWrappedCancellationException(h);
2238 +        g.complete(v1);
2239 +
2240 +        checkCancelled(f);
2241 +        assertEquals(0, r.invocationCount);
2242 +        checkCompletedNormally(g, v1);
2243 +        checkCompletedWithWrappedCancellationException(h);
2244 +    }}
2245 +
2246 +    public void testApplyToEither_sourceCancelled2() {
2247 +        for (ExecutionMode m : ExecutionMode.values())
2248 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2249 +        for (Integer v1 : new Integer[] { 1, null })
2250 +    {
2251 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2252 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2253 +        final IncFunction r = new IncFunction();
2254 +        final CompletableFuture<Integer> h = m.applyToEither(f, g, r);
2255 +
2256 +        assertTrue(g.cancel(mayInterruptIfRunning));
2257 +        checkCompletedWithWrappedCancellationException(h);
2258 +        f.complete(v1);
2259 +
2260 +        checkCancelled(g);
2261 +        assertEquals(0, r.invocationCount);
2262 +        checkCompletedNormally(f, v1);
2263 +        checkCompletedWithWrappedCancellationException(h);
2264 +    }}
2265 +
2266 +    public void testApplyToEither_sourceCancelled3() {
2267 +        for (ExecutionMode m : ExecutionMode.values())
2268 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2269 +        for (Integer v1 : new Integer[] { 1, null })
2270 +    {
2271 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2272 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2273 +        final IncFunction r = new IncFunction();
2274 +
2275 +        assertTrue(g.cancel(mayInterruptIfRunning));
2276 +        f.complete(v1);
2277 +        final CompletableFuture<Integer> h = m.applyToEither(f, g, r);
2278 +
2279 +        // unspecified behavior
2280 +        Integer v;
2281 +        try {
2282 +            assertEquals(inc(v1), h.join());
2283 +            assertEquals(1, r.invocationCount);
2284 +        } catch (CompletionException ok) {
2285 +            checkCompletedWithWrappedCancellationException(h);
2286 +            assertEquals(0, r.invocationCount);
2287 +        }
2288 +
2289 +        checkCancelled(g);
2290 +        checkCompletedNormally(f, v1);
2291 +    }}
2292 +
2293 +    public void testApplyToEither_sourceCancelled4() {
2294 +        for (ExecutionMode m : ExecutionMode.values())
2295 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2296 +        for (Integer v1 : new Integer[] { 1, null })
2297 +    {
2298 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2299 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2300 +        final IncFunction r = new IncFunction();
2301 +
2302 +        assertTrue(f.cancel(mayInterruptIfRunning));
2303 +        g.complete(v1);
2304 +        final CompletableFuture<Integer> h = m.applyToEither(f, g, r);
2305 +
2306 +        // unspecified behavior
2307 +        Integer v;
2308 +        try {
2309 +            assertEquals(inc(v1), h.join());
2310 +            assertEquals(1, r.invocationCount);
2311 +        } catch (CompletionException ok) {
2312 +            checkCompletedWithWrappedCancellationException(h);
2313 +            assertEquals(0, r.invocationCount);
2314 +        }
2315 +
2316 +        checkCancelled(f);
2317 +        checkCompletedNormally(g, v1);
2318 +    }}
2319 +
2320 +    /**
2321 +     * acceptEither result completes normally after normal completion
2322 +     * of either source
2323 +     */
2324 +    public void testAcceptEither_normalCompletion1() {
2325 +        for (ExecutionMode m : ExecutionMode.values())
2326 +        for (Integer v1 : new Integer[] { 1, null })
2327 +        for (Integer v2 : new Integer[] { 2, null })
2328 +    {
2329 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2330 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2331 +        final IncAction r = new IncAction();
2332 +        final CompletableFuture<Void> h = m.acceptEither(f, g, r);
2333 +
2334 +        f.complete(v1);
2335 +        checkCompletedNormally(h, null);
2336 +        assertEquals(inc(v1), r.value);
2337 +        g.complete(v2);
2338 +
2339 +        checkCompletedNormally(f, v1);
2340 +        checkCompletedNormally(g, v2);
2341 +        checkCompletedNormally(h, null);
2342 +    }}
2343 +
2344 +    public void testAcceptEither_normalCompletion2() {
2345 +        for (ExecutionMode m : ExecutionMode.values())
2346 +        for (Integer v1 : new Integer[] { 1, null })
2347 +        for (Integer v2 : new Integer[] { 2, null })
2348 +    {
2349 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2350 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2351 +        final IncAction r = new IncAction();
2352 +        final CompletableFuture<Void> h = m.acceptEither(f, g, r);
2353 +
2354 +        g.complete(v2);
2355 +        checkCompletedNormally(h, null);
2356 +        assertEquals(inc(v2), r.value);
2357 +        f.complete(v1);
2358 +
2359 +        checkCompletedNormally(f, v1);
2360 +        checkCompletedNormally(g, v2);
2361 +        checkCompletedNormally(h, null);
2362 +    }}
2363 +
2364 +    public void testAcceptEither_normalCompletion3() {
2365 +        for (ExecutionMode m : ExecutionMode.values())
2366 +        for (Integer v1 : new Integer[] { 1, null })
2367 +        for (Integer v2 : new Integer[] { 2, null })
2368 +    {
2369 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2370 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2371 +        final IncAction r = new IncAction();
2372 +
2373 +        f.complete(v1);
2374 +        g.complete(v2);
2375 +        final CompletableFuture<Void> h = m.acceptEither(f, g, r);
2376 +
2377 +        checkCompletedNormally(h, null);
2378 +        checkCompletedNormally(f, v1);
2379 +        checkCompletedNormally(g, v2);
2380 +
2381 +        // unspecified behavior
2382 +        assertTrue(Objects.equals(r.value, inc(v1)) ||
2383 +                   Objects.equals(r.value, inc(v2)));
2384 +    }}
2385 +
2386 +    /**
2387 +     * acceptEither result completes exceptionally after exceptional
2388 +     * completion of either source
2389 +     */
2390 +    public void testAcceptEither_exceptionalCompletion1() {
2391 +        for (ExecutionMode m : ExecutionMode.values())
2392 +        for (Integer v1 : new Integer[] { 1, null })
2393 +    {
2394 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2395 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2396 +        final IncAction r = new IncAction();
2397 +        final CompletableFuture<Void> h = m.acceptEither(f, g, r);
2398 +        final CFException ex = new CFException();
2399 +
2400 +        f.completeExceptionally(ex);
2401 +        checkCompletedWithWrappedCFException(h, ex);
2402 +        g.complete(v1);
2403 +
2404 +        assertEquals(0, r.invocationCount);
2405 +        checkCompletedNormally(g, v1);
2406 +        checkCompletedWithWrappedCFException(f, ex);
2407 +        checkCompletedWithWrappedCFException(h, ex);
2408 +    }}
2409 +
2410 +    public void testAcceptEither_exceptionalCompletion2() {
2411 +        for (ExecutionMode m : ExecutionMode.values())
2412 +        for (Integer v1 : new Integer[] { 1, null })
2413 +    {
2414 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2415 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2416 +        final IncAction r = new IncAction();
2417 +        final CompletableFuture<Void> h = m.acceptEither(f, g, r);
2418 +        final CFException ex = new CFException();
2419 +
2420 +        g.completeExceptionally(ex);
2421 +        checkCompletedWithWrappedCFException(h, ex);
2422 +        f.complete(v1);
2423 +
2424 +        assertEquals(0, r.invocationCount);
2425 +        checkCompletedNormally(f, v1);
2426 +        checkCompletedWithWrappedCFException(g, ex);
2427 +        checkCompletedWithWrappedCFException(h, ex);
2428 +    }}
2429 +
2430 +    public void testAcceptEither_exceptionalCompletion3() {
2431 +        for (ExecutionMode m : ExecutionMode.values())
2432 +        for (Integer v1 : new Integer[] { 1, null })
2433 +    {
2434 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2435 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2436 +        final IncAction r = new IncAction();
2437 +        final CFException ex = new CFException();
2438 +
2439 +        g.completeExceptionally(ex);
2440 +        f.complete(v1);
2441 +        final CompletableFuture<Void> h = m.acceptEither(f, g, r);
2442 +
2443 +        // unspecified behavior
2444 +        Integer v;
2445 +        try {
2446 +            assertNull(h.join());
2447 +            assertEquals(1, r.invocationCount);
2448 +            assertEquals(inc(v1), r.value);
2449 +        } catch (CompletionException ok) {
2450 +            checkCompletedWithWrappedCFException(h, ex);
2451 +            assertEquals(0, r.invocationCount);
2452 +        }
2453 +
2454 +        checkCompletedWithWrappedCFException(g, ex);
2455 +        checkCompletedNormally(f, v1);
2456 +    }}
2457 +
2458 +    public void testAcceptEither_exceptionalCompletion4() {
2459 +        for (ExecutionMode m : ExecutionMode.values())
2460 +        for (Integer v1 : new Integer[] { 1, null })
2461 +    {
2462 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2463 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2464 +        final IncAction r = new IncAction();
2465 +        final CFException ex = new CFException();
2466 +
2467 +        f.completeExceptionally(ex);
2468 +        g.complete(v1);
2469 +        final CompletableFuture<Void> h = m.acceptEither(f, g, r);
2470 +
2471 +        // unspecified behavior
2472 +        Integer v;
2473 +        try {
2474 +            assertNull(h.join());
2475 +            assertEquals(1, r.invocationCount);
2476 +            assertEquals(inc(v1), r.value);
2477 +        } catch (CompletionException ok) {
2478 +            checkCompletedWithWrappedCFException(h, ex);
2479 +            assertEquals(0, r.invocationCount);
2480 +        }
2481 +
2482 +        checkCompletedWithWrappedCFException(f, ex);
2483 +        checkCompletedNormally(g, v1);
2484 +    }}
2485 +
2486 +    /**
2487 +     * acceptEither result completes exceptionally if action does
2488 +     */
2489 +    public void testAcceptEither_actionFailed1() {
2490 +        for (ExecutionMode m : ExecutionMode.values())
2491 +        for (Integer v1 : new Integer[] { 1, null })
2492 +        for (Integer v2 : new Integer[] { 2, null })
2493 +    {
2494 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2495 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2496 +        final FailingConsumer r = new FailingConsumer();
2497 +        final CompletableFuture<Void> h = m.acceptEither(f, g, r);
2498 +
2499 +        f.complete(v1);
2500 +        checkCompletedWithWrappedCFException(h);
2501 +        g.complete(v2);
2502 +        checkCompletedNormally(f, v1);
2503 +        checkCompletedNormally(g, v2);
2504 +    }}
2505 +
2506 +    public void testAcceptEither_actionFailed2() {
2507 +        for (ExecutionMode m : ExecutionMode.values())
2508 +        for (Integer v1 : new Integer[] { 1, null })
2509 +        for (Integer v2 : new Integer[] { 2, null })
2510 +    {
2511 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2512 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2513 +        final FailingConsumer r = new FailingConsumer();
2514 +        final CompletableFuture<Void> h = m.acceptEither(f, g, r);
2515 +
2516 +        g.complete(v2);
2517 +        checkCompletedWithWrappedCFException(h);
2518 +        f.complete(v1);
2519 +        checkCompletedNormally(f, v1);
2520 +        checkCompletedNormally(g, v2);
2521 +    }}
2522 +
2523 +    /**
2524 +     * acceptEither result completes exceptionally if either source cancelled
2525 +     */
2526 +    public void testAcceptEither_sourceCancelled1() {
2527 +        for (ExecutionMode m : ExecutionMode.values())
2528 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2529 +        for (Integer v1 : new Integer[] { 1, null })
2530 +    {
2531 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2532 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2533 +        final IncAction r = new IncAction();
2534 +        final CompletableFuture<Void> h = m.acceptEither(f, g, r);
2535 +
2536 +        assertTrue(f.cancel(mayInterruptIfRunning));
2537 +        checkCompletedWithWrappedCancellationException(h);
2538 +        g.complete(v1);
2539 +
2540 +        checkCancelled(f);
2541 +        assertEquals(0, r.invocationCount);
2542 +        checkCompletedNormally(g, v1);
2543 +        checkCompletedWithWrappedCancellationException(h);
2544 +    }}
2545 +
2546 +    public void testAcceptEither_sourceCancelled2() {
2547 +        for (ExecutionMode m : ExecutionMode.values())
2548 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2549 +        for (Integer v1 : new Integer[] { 1, null })
2550 +    {
2551 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2552 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2553 +        final IncAction r = new IncAction();
2554 +        final CompletableFuture<Void> h = m.acceptEither(f, g, r);
2555 +
2556 +        assertTrue(g.cancel(mayInterruptIfRunning));
2557 +        checkCompletedWithWrappedCancellationException(h);
2558 +        f.complete(v1);
2559 +
2560 +        checkCancelled(g);
2561 +        assertEquals(0, r.invocationCount);
2562 +        checkCompletedNormally(f, v1);
2563 +        checkCompletedWithWrappedCancellationException(h);
2564 +    }}
2565 +
2566 +    public void testAcceptEither_sourceCancelled3() {
2567 +        for (ExecutionMode m : ExecutionMode.values())
2568 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2569 +        for (Integer v1 : new Integer[] { 1, null })
2570 +    {
2571 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2572 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2573 +        final IncAction r = new IncAction();
2574 +
2575 +        assertTrue(g.cancel(mayInterruptIfRunning));
2576 +        f.complete(v1);
2577 +        final CompletableFuture<Void> h = m.acceptEither(f, g, r);
2578 +
2579 +        // unspecified behavior
2580 +        Integer v;
2581 +        try {
2582 +            assertNull(h.join());
2583 +            assertEquals(1, r.invocationCount);
2584 +            assertEquals(inc(v1), r.value);
2585 +        } catch (CompletionException ok) {
2586 +            checkCompletedWithWrappedCancellationException(h);
2587 +            assertEquals(0, r.invocationCount);
2588 +        }
2589 +
2590 +        checkCancelled(g);
2591 +        checkCompletedNormally(f, v1);
2592 +    }}
2593 +
2594 +    public void testAcceptEither_sourceCancelled4() {
2595 +        for (ExecutionMode m : ExecutionMode.values())
2596 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2597 +        for (Integer v1 : new Integer[] { 1, null })
2598 +    {
2599 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2600 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2601 +        final IncAction r = new IncAction();
2602 +
2603 +        assertTrue(f.cancel(mayInterruptIfRunning));
2604 +        g.complete(v1);
2605 +        final CompletableFuture<Void> h = m.acceptEither(f, g, r);
2606 +
2607 +        // unspecified behavior
2608 +        Integer v;
2609 +        try {
2610 +            assertNull(h.join());
2611 +            assertEquals(1, r.invocationCount);
2612 +            assertEquals(inc(v1), r.value);
2613 +        } catch (CompletionException ok) {
2614 +            checkCompletedWithWrappedCancellationException(h);
2615 +            assertEquals(0, r.invocationCount);
2616 +        }
2617 +
2618 +        checkCancelled(f);
2619 +        checkCompletedNormally(g, v1);
2620 +    }}
2621 +
2622 +    /**
2623 +     * runAfterEither result completes normally after normal completion
2624 +     * of either source
2625 +     */
2626 +    public void testRunAfterEither_normalCompletion1() {
2627 +        for (ExecutionMode m : ExecutionMode.values())
2628 +        for (Integer v1 : new Integer[] { 1, null })
2629 +        for (Integer v2 : new Integer[] { 2, null })
2630 +    {
2631 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2632 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2633 +        final Noop r = new Noop();
2634 +        final CompletableFuture<Void> h = m.runAfterEither(f, g, r);
2635 +
2636 +        f.complete(v1);
2637 +        checkCompletedNormally(h, null);
2638 +        assertEquals(1, r.invocationCount);
2639 +        g.complete(v2);
2640 +
2641 +        checkCompletedNormally(f, v1);
2642 +        checkCompletedNormally(g, v2);
2643 +        checkCompletedNormally(h, null);
2644 +        assertEquals(1, r.invocationCount);
2645 +    }}
2646 +
2647 +    public void testRunAfterEither_normalCompletion2() {
2648 +        for (ExecutionMode m : ExecutionMode.values())
2649 +        for (Integer v1 : new Integer[] { 1, null })
2650 +        for (Integer v2 : new Integer[] { 2, null })
2651 +    {
2652 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2653 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2654 +        final Noop r = new Noop();
2655 +        final CompletableFuture<Void> h = m.runAfterEither(f, g, r);
2656 +
2657 +        g.complete(v2);
2658 +        checkCompletedNormally(h, null);
2659 +        assertEquals(1, r.invocationCount);
2660 +        f.complete(v1);
2661 +
2662 +        checkCompletedNormally(f, v1);
2663 +        checkCompletedNormally(g, v2);
2664 +        checkCompletedNormally(h, null);
2665 +        assertEquals(1, r.invocationCount);
2666 +        }}
2667 +
2668 +    public void testRunAfterEither_normalCompletion3() {
2669 +        for (ExecutionMode m : ExecutionMode.values())
2670 +        for (Integer v1 : new Integer[] { 1, null })
2671 +        for (Integer v2 : new Integer[] { 2, null })
2672 +    {
2673 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2674 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2675 +        final Noop r = new Noop();
2676 +
2677 +        f.complete(v1);
2678 +        g.complete(v2);
2679 +        final CompletableFuture<Void> h = m.runAfterEither(f, g, r);
2680 +
2681 +        checkCompletedNormally(h, null);
2682 +        checkCompletedNormally(f, v1);
2683 +        checkCompletedNormally(g, v2);
2684 +        assertEquals(1, r.invocationCount);
2685 +    }}
2686 +
2687 +    /**
2688 +     * runAfterEither result completes exceptionally after exceptional
2689 +     * completion of either source
2690 +     */
2691 +    public void testRunAfterEither_exceptionalCompletion1() {
2692 +        for (ExecutionMode m : ExecutionMode.values())
2693 +        for (Integer v1 : new Integer[] { 1, null })
2694 +    {
2695 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2696 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2697 +        final Noop r = new Noop();
2698 +        final CompletableFuture<Void> h = m.runAfterEither(f, g, r);
2699 +        final CFException ex = new CFException();
2700 +
2701 +        f.completeExceptionally(ex);
2702 +        checkCompletedWithWrappedCFException(h, ex);
2703 +        g.complete(v1);
2704 +
2705 +        assertEquals(0, r.invocationCount);
2706 +        checkCompletedNormally(g, v1);
2707 +        checkCompletedWithWrappedCFException(f, ex);
2708 +        checkCompletedWithWrappedCFException(h, ex);
2709 +    }}
2710 +
2711 +    public void testRunAfterEither_exceptionalCompletion2() {
2712 +        for (ExecutionMode m : ExecutionMode.values())
2713 +        for (Integer v1 : new Integer[] { 1, null })
2714 +    {
2715 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2716 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2717 +        final Noop r = new Noop();
2718 +        final CompletableFuture<Void> h = m.runAfterEither(f, g, r);
2719 +        final CFException ex = new CFException();
2720 +
2721 +        g.completeExceptionally(ex);
2722 +        checkCompletedWithWrappedCFException(h, ex);
2723 +        f.complete(v1);
2724 +
2725 +        assertEquals(0, r.invocationCount);
2726 +        checkCompletedNormally(f, v1);
2727 +        checkCompletedWithWrappedCFException(g, ex);
2728 +        checkCompletedWithWrappedCFException(h, ex);
2729 +    }}
2730 +
2731 +    public void testRunAfterEither_exceptionalCompletion3() {
2732 +        for (ExecutionMode m : ExecutionMode.values())
2733 +        for (Integer v1 : new Integer[] { 1, null })
2734 +    {
2735 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2736 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2737 +        final Noop r = new Noop();
2738 +        final CFException ex = new CFException();
2739 +
2740 +        g.completeExceptionally(ex);
2741 +        f.complete(v1);
2742 +        final CompletableFuture<Void> h = m.runAfterEither(f, g, r);
2743 +
2744 +        // unspecified behavior
2745 +        Integer v;
2746 +        try {
2747 +            assertNull(h.join());
2748 +            assertEquals(1, r.invocationCount);
2749 +        } catch (CompletionException ok) {
2750 +            checkCompletedWithWrappedCFException(h, ex);
2751 +            assertEquals(0, r.invocationCount);
2752 +        }
2753 +
2754 +        checkCompletedWithWrappedCFException(g, ex);
2755 +        checkCompletedNormally(f, v1);
2756 +    }}
2757 +
2758 +    public void testRunAfterEither_exceptionalCompletion4() {
2759 +        for (ExecutionMode m : ExecutionMode.values())
2760 +        for (Integer v1 : new Integer[] { 1, null })
2761 +    {
2762 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2763 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2764 +        final Noop r = new Noop();
2765 +        final CFException ex = new CFException();
2766 +
2767 +        f.completeExceptionally(ex);
2768 +        g.complete(v1);
2769 +        final CompletableFuture<Void> h = m.runAfterEither(f, g, r);
2770 +
2771 +        // unspecified behavior
2772 +        Integer v;
2773 +        try {
2774 +            assertNull(h.join());
2775 +            assertEquals(1, r.invocationCount);
2776 +        } catch (CompletionException ok) {
2777 +            checkCompletedWithWrappedCFException(h, ex);
2778 +            assertEquals(0, r.invocationCount);
2779 +        }
2780 +
2781 +        checkCompletedWithWrappedCFException(f, ex);
2782 +        checkCompletedNormally(g, v1);
2783 +    }}
2784 +
2785 +    /**
2786 +     * runAfterEither result completes exceptionally if action does
2787 +     */
2788 +    public void testRunAfterEither_actionFailed1() {
2789 +        for (ExecutionMode m : ExecutionMode.values())
2790 +        for (Integer v1 : new Integer[] { 1, null })
2791 +        for (Integer v2 : new Integer[] { 2, null })
2792 +    {
2793 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2794 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2795 +        final FailingRunnable r = new FailingRunnable();
2796 +        final CompletableFuture<Void> h = m.runAfterEither(f, g, r);
2797 +
2798 +        f.complete(v1);
2799 +        checkCompletedWithWrappedCFException(h);
2800 +        g.complete(v2);
2801 +        checkCompletedNormally(f, v1);
2802 +        checkCompletedNormally(g, v2);
2803 +    }}
2804 +
2805 +    public void testRunAfterEither_actionFailed2() {
2806 +        for (ExecutionMode m : ExecutionMode.values())
2807 +        for (Integer v1 : new Integer[] { 1, null })
2808 +        for (Integer v2 : new Integer[] { 2, null })
2809 +    {
2810 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2811 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2812 +        final FailingRunnable r = new FailingRunnable();
2813 +        final CompletableFuture<Void> h = m.runAfterEither(f, g, r);
2814 +
2815 +        g.complete(v2);
2816 +        checkCompletedWithWrappedCFException(h);
2817 +        f.complete(v1);
2818 +        checkCompletedNormally(f, v1);
2819 +        checkCompletedNormally(g, v2);
2820 +    }}
2821 +
2822 +    /**
2823 +     * runAfterEither result completes exceptionally if either source cancelled
2824 +     */
2825 +    public void testRunAfterEither_sourceCancelled1() {
2826 +        for (ExecutionMode m : ExecutionMode.values())
2827 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2828 +        for (Integer v1 : new Integer[] { 1, null })
2829 +    {
2830 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2831 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2832 +        final Noop r = new Noop();
2833 +        final CompletableFuture<Void> h = m.runAfterEither(f, g, r);
2834 +
2835 +        assertTrue(f.cancel(mayInterruptIfRunning));
2836 +        checkCompletedWithWrappedCancellationException(h);
2837 +        g.complete(v1);
2838 +
2839 +        checkCancelled(f);
2840 +        assertEquals(0, r.invocationCount);
2841 +        checkCompletedNormally(g, v1);
2842 +        checkCompletedWithWrappedCancellationException(h);
2843 +    }}
2844 +
2845 +    public void testRunAfterEither_sourceCancelled2() {
2846 +        for (ExecutionMode m : ExecutionMode.values())
2847 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2848 +        for (Integer v1 : new Integer[] { 1, null })
2849 +    {
2850 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2851 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2852 +        final Noop r = new Noop();
2853 +        final CompletableFuture<Void> h = m.runAfterEither(f, g, r);
2854 +
2855 +        assertTrue(g.cancel(mayInterruptIfRunning));
2856 +        checkCompletedWithWrappedCancellationException(h);
2857 +        f.complete(v1);
2858 +
2859 +        checkCancelled(g);
2860 +        assertEquals(0, r.invocationCount);
2861 +        checkCompletedNormally(f, v1);
2862 +        checkCompletedWithWrappedCancellationException(h);
2863 +    }}
2864 +
2865 +    public void testRunAfterEither_sourceCancelled3() {
2866 +        for (ExecutionMode m : ExecutionMode.values())
2867 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2868 +        for (Integer v1 : new Integer[] { 1, null })
2869 +    {
2870 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2871 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2872 +        final Noop r = new Noop();
2873 +
2874 +        assertTrue(g.cancel(mayInterruptIfRunning));
2875 +        f.complete(v1);
2876 +        final CompletableFuture<Void> h = m.runAfterEither(f, g, r);
2877 +
2878 +        // unspecified behavior
2879 +        Integer v;
2880 +        try {
2881 +            assertNull(h.join());
2882 +            assertEquals(1, r.invocationCount);
2883 +        } catch (CompletionException ok) {
2884 +            checkCompletedWithWrappedCancellationException(h);
2885 +            assertEquals(0, r.invocationCount);
2886 +        }
2887 +
2888 +        checkCancelled(g);
2889 +        checkCompletedNormally(f, v1);
2890 +    }}
2891 +
2892 +    public void testRunAfterEither_sourceCancelled4() {
2893 +        for (ExecutionMode m : ExecutionMode.values())
2894 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2895 +        for (Integer v1 : new Integer[] { 1, null })
2896 +    {
2897 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2898 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2899 +        final Noop r = new Noop();
2900 +
2901 +        assertTrue(f.cancel(mayInterruptIfRunning));
2902 +        g.complete(v1);
2903 +        final CompletableFuture<Void> h = m.runAfterEither(f, g, r);
2904 +
2905 +        // unspecified behavior
2906 +        Integer v;
2907 +        try {
2908 +            assertNull(h.join());
2909 +            assertEquals(1, r.invocationCount);
2910 +        } catch (CompletionException ok) {
2911 +            checkCompletedWithWrappedCancellationException(h);
2912 +            assertEquals(0, r.invocationCount);
2913 +        }
2914 +
2915 +        checkCancelled(f);
2916 +        checkCompletedNormally(g, v1);
2917 +    }}
2918 +
2919 +    /**
2920 +     * thenCompose result completes normally after normal completion of source
2921 +     */
2922 +    public void testThenCompose_normalCompletion() {
2923 +        for (ExecutionMode m : ExecutionMode.values())
2924 +        for (boolean createIncomplete : new boolean[] { true, false })
2925 +        for (Integer v1 : new Integer[] { 1, null })
2926 +    {
2927 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2928 +        final CompletableFutureInc r = new CompletableFutureInc();
2929 +        if (!createIncomplete) f.complete(v1);
2930 +        final CompletableFuture<Integer> g = f.thenCompose(r);
2931 +        if (createIncomplete) f.complete(v1);
2932 +
2933 +        checkCompletedNormally(g, inc(v1));
2934 +        checkCompletedNormally(f, v1);
2935 +        assertEquals(1, r.invocationCount);
2936 +    }}
2937 +
2938 +    /**
2939 +     * thenCompose result completes exceptionally after exceptional
2940 +     * completion of source
2941 +     */
2942 +    public void testThenCompose_exceptionalCompletion() {
2943 +        for (ExecutionMode m : ExecutionMode.values())
2944 +        for (boolean createIncomplete : new boolean[] { true, false })
2945 +    {
2946 +        final CFException ex = new CFException();
2947 +        final CompletableFutureInc r = new CompletableFutureInc();
2948 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2949 +        if (!createIncomplete) f.completeExceptionally(ex);
2950 +        final CompletableFuture<Integer> g = f.thenCompose(r);
2951 +        if (createIncomplete) f.completeExceptionally(ex);
2952 +
2953 +        checkCompletedWithWrappedCFException(g, ex);
2954 +        checkCompletedWithWrappedCFException(f, ex);
2955 +        assertEquals(0, r.invocationCount);
2956 +    }}
2957 +
2958 +    /**
2959 +     * thenCompose result completes exceptionally if action does
2960 +     */
2961 +    public void testThenCompose_actionFailed() {
2962 +        for (ExecutionMode m : ExecutionMode.values())
2963 +        for (boolean createIncomplete : new boolean[] { true, false })
2964 +        for (Integer v1 : new Integer[] { 1, null })
2965 +    {
2966 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2967 +        final FailingCompletableFutureFunction r
2968 +            = new FailingCompletableFutureFunction();
2969 +        if (!createIncomplete) f.complete(v1);
2970 +        final CompletableFuture<Integer> g = f.thenCompose(r);
2971 +        if (createIncomplete) f.complete(v1);
2972 +
2973 +        checkCompletedWithWrappedCFException(g);
2974 +        checkCompletedNormally(f, v1);
2975 +    }}
2976 +
2977 +    /**
2978 +     * thenCompose result completes exceptionally if source cancelled
2979 +     */
2980 +    public void testThenCompose_sourceCancelled() {
2981 +        for (ExecutionMode m : ExecutionMode.values())
2982 +        for (boolean createIncomplete : new boolean[] { true, false })
2983 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2984 +    {
2985 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2986 +        final CompletableFutureInc r = new CompletableFutureInc();
2987 +        if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
2988 +        final CompletableFuture<Integer> g = f.thenCompose(r);
2989 +        if (createIncomplete) {
2990 +            checkIncomplete(g);
2991 +            assertTrue(f.cancel(mayInterruptIfRunning));
2992 +        }
2993 +
2994 +        checkCompletedWithWrappedCancellationException(g);
2995 +        checkCancelled(f);
2996 +    }}
2997 +
2998 +    // other static methods
2999 +
3000 +    /**
3001 +     * allOf(no component futures) returns a future completed normally
3002 +     * with the value null
3003 +     */
3004 +    public void testAllOf_empty() throws Exception {
3005 +        CompletableFuture<Void> f = CompletableFuture.allOf();
3006 +        checkCompletedNormally(f, null);
3007 +    }
3008 +
3009 +    /**
3010 +     * allOf returns a future completed normally with the value null
3011 +     * when all components complete normally
3012 +     */
3013 +    public void testAllOf_normal() throws Exception {
3014 +        for (int k = 1; k < 20; ++k) {
3015 +            CompletableFuture<Integer>[] fs = (CompletableFuture<Integer>[]) new CompletableFuture[k];
3016 +            for (int i = 0; i < k; ++i)
3017 +                fs[i] = new CompletableFuture<>();
3018 +            CompletableFuture<Void> f = CompletableFuture.allOf(fs);
3019 +            for (int i = 0; i < k; ++i) {
3020 +                checkIncomplete(f);
3021 +                checkIncomplete(CompletableFuture.allOf(fs));
3022 +                fs[i].complete(one);
3023 +            }
3024 +            checkCompletedNormally(f, null);
3025 +            checkCompletedNormally(CompletableFuture.allOf(fs), null);
3026 +        }
3027 +    }
3028 +
3029 +    /**
3030 +     * anyOf(no component futures) returns an incomplete future
3031 +     */
3032 +    public void testAnyOf_empty() throws Exception {
3033 +        CompletableFuture<Object> f = CompletableFuture.anyOf();
3034 +        checkIncomplete(f);
3035 +    }
3036 +
3037 +    /**
3038 +     * anyOf returns a future completed normally with a value when
3039 +     * a component future does
3040 +     */
3041 +    public void testAnyOf_normal() throws Exception {
3042 +        for (int k = 0; k < 10; ++k) {
3043 +            CompletableFuture[] fs = new CompletableFuture[k];
3044 +            for (int i = 0; i < k; ++i)
3045 +                fs[i] = new CompletableFuture<>();
3046 +            CompletableFuture<Object> f = CompletableFuture.anyOf(fs);
3047 +            checkIncomplete(f);
3048 +            for (int i = 0; i < k; ++i) {
3049 +                fs[i].complete(one);
3050 +                checkCompletedNormally(f, one);
3051 +                checkCompletedNormally(CompletableFuture.anyOf(fs), one);
3052 +            }
3053 +        }
3054 +    }
3055 +
3056 +    /**
3057 +     * anyOf result completes exceptionally when any component does.
3058 +     */
3059 +    public void testAnyOf_exceptional() throws Exception {
3060 +        for (int k = 0; k < 10; ++k) {
3061 +            CompletableFuture[] fs = new CompletableFuture[k];
3062 +            for (int i = 0; i < k; ++i)
3063 +                fs[i] = new CompletableFuture<>();
3064 +            CompletableFuture<Object> f = CompletableFuture.anyOf(fs);
3065 +            checkIncomplete(f);
3066 +            for (int i = 0; i < k; ++i) {
3067 +                fs[i].completeExceptionally(new CFException());
3068 +                checkCompletedWithWrappedCFException(f);
3069 +                checkCompletedWithWrappedCFException(CompletableFuture.anyOf(fs));
3070 +            }
3071 +        }
3072 +    }
3073 +
3074 +    /**
3075 +     * Completion methods throw NullPointerException with null arguments
3076 +     */
3077 +    public void testNPE() {
3078 +        CompletableFuture<Integer> f = new CompletableFuture<>();
3079 +        CompletableFuture<Integer> g = new CompletableFuture<>();
3080 +        CompletableFuture<Integer> nullFuture = (CompletableFuture<Integer>)null;
3081 +        CompletableFuture<?> h;
3082 +        ThreadExecutor exec = new ThreadExecutor();
3083 +
3084 +        Runnable[] throwingActions = {
3085 +            () -> CompletableFuture.supplyAsync(null),
3086 +            () -> CompletableFuture.supplyAsync(null, exec),
3087 +            () -> CompletableFuture.supplyAsync(supplyOne, null),
3088 +
3089 +            () -> CompletableFuture.runAsync(null),
3090 +            () -> CompletableFuture.runAsync(null, exec),
3091 +            () -> CompletableFuture.runAsync(() -> {}, null),
3092 +
3093 +            () -> f.completeExceptionally(null),
3094 +
3095 +            () -> f.thenApply(null),
3096 +            () -> f.thenApplyAsync(null),
3097 +            () -> f.thenApplyAsync((x) -> x, null),
3098 +            () -> f.thenApplyAsync(null, exec),
3099 +
3100 +            () -> f.thenAccept(null),
3101 +            () -> f.thenAcceptAsync(null),
3102 +            () -> f.thenAcceptAsync((x) -> {} , null),
3103 +            () -> f.thenAcceptAsync(null, exec),
3104 +
3105 +            () -> f.thenRun(null),
3106 +            () -> f.thenRunAsync(null),
3107 +            () -> f.thenRunAsync(() -> {} , null),
3108 +            () -> f.thenRunAsync(null, exec),
3109 +
3110 +            () -> f.thenCombine(g, null),
3111 +            () -> f.thenCombineAsync(g, null),
3112 +            () -> f.thenCombineAsync(g, null, exec),
3113 +            () -> f.thenCombine(nullFuture, (x, y) -> x),
3114 +            () -> f.thenCombineAsync(nullFuture, (x, y) -> x),
3115 +            () -> f.thenCombineAsync(nullFuture, (x, y) -> x, exec),
3116 +            () -> f.thenCombineAsync(g, (x, y) -> x, null),
3117 +
3118 +            () -> f.thenAcceptBoth(g, null),
3119 +            () -> f.thenAcceptBothAsync(g, null),
3120 +            () -> f.thenAcceptBothAsync(g, null, exec),
3121 +            () -> f.thenAcceptBoth(nullFuture, (x, y) -> {}),
3122 +            () -> f.thenAcceptBothAsync(nullFuture, (x, y) -> {}),
3123 +            () -> f.thenAcceptBothAsync(nullFuture, (x, y) -> {}, exec),
3124 +            () -> f.thenAcceptBothAsync(g, (x, y) -> {}, null),
3125 +
3126 +            () -> f.runAfterBoth(g, null),
3127 +            () -> f.runAfterBothAsync(g, null),
3128 +            () -> f.runAfterBothAsync(g, null, exec),
3129 +            () -> f.runAfterBoth(nullFuture, () -> {}),
3130 +            () -> f.runAfterBothAsync(nullFuture, () -> {}),
3131 +            () -> f.runAfterBothAsync(nullFuture, () -> {}, exec),
3132 +            () -> f.runAfterBothAsync(g, () -> {}, null),
3133 +
3134 +            () -> f.applyToEither(g, null),
3135 +            () -> f.applyToEitherAsync(g, null),
3136 +            () -> f.applyToEitherAsync(g, null, exec),
3137 +            () -> f.applyToEither(nullFuture, (x) -> x),
3138 +            () -> f.applyToEitherAsync(nullFuture, (x) -> x),
3139 +            () -> f.applyToEitherAsync(nullFuture, (x) -> x, exec),
3140 +            () -> f.applyToEitherAsync(g, (x) -> x, null),
3141 +
3142 +            () -> f.acceptEither(g, null),
3143 +            () -> f.acceptEitherAsync(g, null),
3144 +            () -> f.acceptEitherAsync(g, null, exec),
3145 +            () -> f.acceptEither(nullFuture, (x) -> {}),
3146 +            () -> f.acceptEitherAsync(nullFuture, (x) -> {}),
3147 +            () -> f.acceptEitherAsync(nullFuture, (x) -> {}, exec),
3148 +            () -> f.acceptEitherAsync(g, (x) -> {}, null),
3149 +
3150 +            () -> f.runAfterEither(g, null),
3151 +            () -> f.runAfterEitherAsync(g, null),
3152 +            () -> f.runAfterEitherAsync(g, null, exec),
3153 +            () -> f.runAfterEither(nullFuture, () -> {}),
3154 +            () -> f.runAfterEitherAsync(nullFuture, () -> {}),
3155 +            () -> f.runAfterEitherAsync(nullFuture, () -> {}, exec),
3156 +            () -> f.runAfterEitherAsync(g, () -> {}, null),
3157 +
3158 +            () -> f.thenCompose(null),
3159 +            () -> f.thenComposeAsync(null),
3160 +            () -> f.thenComposeAsync(new CompletableFutureInc(), null),
3161 +            () -> f.thenComposeAsync(null, exec),
3162 +
3163 +            () -> f.exceptionally(null),
3164 +
3165 +            () -> f.handle(null),
3166 +
3167 +            () -> CompletableFuture.allOf((CompletableFuture<?>)null),
3168 +            () -> CompletableFuture.allOf((CompletableFuture<?>[])null),
3169 +            () -> CompletableFuture.allOf(f, null),
3170 +            () -> CompletableFuture.allOf(null, f),
3171 +
3172 +            () -> CompletableFuture.anyOf((CompletableFuture<?>)null),
3173 +            () -> CompletableFuture.anyOf((CompletableFuture<?>[])null),
3174 +            () -> CompletableFuture.anyOf(f, null),
3175 +            () -> CompletableFuture.anyOf(null, f),
3176 +
3177 +            () -> f.obtrudeException(null),
3178 +        };
3179 +
3180 +        assertThrows(NullPointerException.class, throwingActions);
3181 +        assertEquals(0, exec.count.get());
3182 +    }
3183 +
3184 +    /**
3185 +     * toCompletableFuture returns this CompletableFuture.
3186 +     */
3187 +    public void testToCompletableFuture() {
3188 +        CompletableFuture<Integer> f = new CompletableFuture<>();
3189 +        assertSame(f, f.toCompletableFuture());
3190 +    }
3191 +
3192 +    /**
3193 +     * whenComplete action executes on normal completion, propagating
3194 +     * source result.
3195 +     */
3196 +    public void testWhenComplete_normalCompletion1() {
3197 +        for (ExecutionMode m : ExecutionMode.values())
3198 +        for (boolean createIncomplete : new boolean[] { true, false })
3199 +        for (Integer v1 : new Integer[] { 1, null })
3200 +    {
3201 +        final AtomicInteger a = new AtomicInteger(0);
3202 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
3203 +        if (!createIncomplete) f.complete(v1);
3204 +        final CompletableFuture<Integer> g = m.whenComplete
3205 +            (f,
3206 +             (Integer x, Throwable t) -> {
3207 +                threadAssertSame(x, v1);
3208 +                threadAssertNull(t);
3209 +                a.getAndIncrement();
3210 +            });
3211 +        if (createIncomplete) f.complete(v1);
3212 +
3213 +        checkCompletedNormally(g, v1);
3214 +        checkCompletedNormally(f, v1);
3215 +        assertEquals(1, a.get());
3216 +    }}
3217 +
3218 +    /**
3219 +     * whenComplete action executes on exceptional completion, propagating
3220 +     * source result.
3221 +     */
3222 +    public void testWhenComplete_exceptionalCompletion() {
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 CFException ex = new CFException();
3229 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
3230 +        if (!createIncomplete) f.completeExceptionally(ex);
3231 +        final CompletableFuture<Integer> g = m.whenComplete
3232 +            (f,
3233 +             (Integer x, Throwable t) -> {
3234 +                threadAssertNull(x);
3235 +                threadAssertSame(t, ex);
3236 +                a.getAndIncrement();
3237 +            });
3238 +        if (createIncomplete) f.completeExceptionally(ex);
3239 +        checkCompletedWithWrappedCFException(f, ex);
3240 +        checkCompletedWithWrappedCFException(g, ex);
3241 +        assertEquals(1, a.get());
3242 +    }}
3243 +
3244 +    /**
3245 +     * whenComplete action executes on cancelled source, propagating
3246 +     * CancellationException.
3247 +     */
3248 +    public void testWhenComplete_sourceCancelled() {
3249 +        for (ExecutionMode m : ExecutionMode.values())
3250 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
3251 +        for (boolean createIncomplete : new boolean[] { true, false })
3252 +    {
3253 +        final AtomicInteger a = new AtomicInteger(0);
3254 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
3255 +        if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
3256 +        final CompletableFuture<Integer> g = m.whenComplete
3257 +            (f,
3258 +             (Integer x, Throwable t) -> {
3259 +                threadAssertNull(x);
3260 +                threadAssertTrue(t instanceof CancellationException);
3261 +                a.getAndIncrement();
3262 +            });
3263 +        if (createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
3264 +
3265 +        //try { g.join(); } catch (Throwable t) { throw new Error(t); }
3266 +        checkCompletedWithWrappedCancellationException(g);
3267 +        checkCancelled(f);
3268 +        assertEquals(1, a.get());
3269 +    }}
3270 +
3271 +    /**
3272 +     * If a whenComplete action throws an exception when triggered by
3273 +     * a normal completion, it completes exceptionally
3274 +     */
3275 +    public void testWhenComplete_actionFailed() {
3276 +        for (boolean createIncomplete : new boolean[] { true, false })
3277 +        for (ExecutionMode m : ExecutionMode.values())
3278 +        for (Integer v1 : new Integer[] { 1, null })
3279 +    {
3280 +        final AtomicInteger a = new AtomicInteger(0);
3281 +        final CFException ex = new CFException();
3282 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
3283 +        if (!createIncomplete) f.complete(v1);
3284 +        final CompletableFuture<Integer> g = m.whenComplete
3285 +            (f,
3286 +             (Integer x, Throwable t) -> {
3287 +                threadAssertSame(x, v1);
3288 +                threadAssertNull(t);
3289 +                a.getAndIncrement();
3290 +                throw ex;
3291 +            });
3292 +        if (createIncomplete) f.complete(v1);
3293 +        checkCompletedNormally(f, v1);
3294 +        checkCompletedWithWrappedCFException(g, ex);
3295 +        assertEquals(1, a.get());
3296 +    }}
3297 +
3298 +    /**
3299 +     * If a whenComplete action throws an exception when triggered by
3300 +     * a source completion that also throws an exception, the source
3301 +     * exception takes precedence.
3302 +     */
3303 +    public void testWhenComplete_actionFailedSourceFailed() {
3304 +        for (boolean createIncomplete : new boolean[] { true, false })
3305 +        for (ExecutionMode m : ExecutionMode.values())
3306 +        for (Integer v1 : new Integer[] { 1, null })
3307 +    {
3308 +        final AtomicInteger a = new AtomicInteger(0);
3309 +        final CFException ex1 = new CFException();
3310 +        final CFException ex2 = new CFException();
3311 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
3312 +
3313 +        if (!createIncomplete) f.completeExceptionally(ex1);
3314 +        final CompletableFuture<Integer> g = m.whenComplete
3315 +            (f,
3316 +             (Integer x, Throwable t) -> {
3317 +                threadAssertSame(t, ex1);
3318 +                threadAssertNull(x);
3319 +                a.getAndIncrement();
3320 +                throw ex2;
3321 +            });
3322 +        if (createIncomplete) f.completeExceptionally(ex1);
3323 +
3324 +        checkCompletedWithWrappedCFException(f, ex1);
3325 +        checkCompletedWithWrappedCFException(g, ex1);
3326 +        assertEquals(1, a.get());
3327 +    }}
3328 +
3329   }

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