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Comparing jsr166/src/test/tck/CompletableFutureTest.java (file contents):
Revision 1.3 by jsr166, Sat Feb 9 19:33:08 2013 UTC vs.
Revision 1.54 by jsr166, Mon Jun 2 21:32:24 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 <    // XXXX Just a skeleton implementation for now.
43 <    public void testTODO() {
44 <        fail("Please add some real tests!");
42 >    static class CFException extends RuntimeException {}
43 >
44 >    void checkIncomplete(CompletableFuture<?> f) {
45 >        assertFalse(f.isDone());
46 >        assertFalse(f.isCancelled());
47 >        assertTrue(f.toString().contains("[Not completed]"));
48 >        try {
49 >            assertNull(f.getNow(null));
50 >        } catch (Throwable fail) { threadUnexpectedException(fail); }
51 >        try {
52 >            f.get(0L, SECONDS);
53 >            shouldThrow();
54 >        }
55 >        catch (TimeoutException success) {}
56 >        catch (Throwable fail) { threadUnexpectedException(fail); }
57 >    }
58 >
59 >    <T> void checkCompletedNormally(CompletableFuture<T> f, T value) {
60 >        try {
61 >            assertEquals(value, f.get(LONG_DELAY_MS, MILLISECONDS));
62 >        } catch (Throwable fail) { threadUnexpectedException(fail); }
63 >        try {
64 >            assertEquals(value, f.join());
65 >        } catch (Throwable fail) { threadUnexpectedException(fail); }
66 >        try {
67 >            assertEquals(value, f.getNow(null));
68 >        } catch (Throwable fail) { threadUnexpectedException(fail); }
69 >        try {
70 >            assertEquals(value, f.get());
71 >        } catch (Throwable fail) { threadUnexpectedException(fail); }
72 >        assertTrue(f.isDone());
73 >        assertFalse(f.isCancelled());
74 >        assertFalse(f.isCompletedExceptionally());
75 >        assertTrue(f.toString().contains("[Completed normally]"));
76 >    }
77 >
78 >    void checkCompletedWithWrappedCFException(CompletableFuture<?> f) {
79 >        try {
80 >            f.get(LONG_DELAY_MS, MILLISECONDS);
81 >            shouldThrow();
82 >        } catch (ExecutionException success) {
83 >            assertTrue(success.getCause() instanceof CFException);
84 >        } catch (Throwable fail) { threadUnexpectedException(fail); }
85 >        try {
86 >            f.join();
87 >            shouldThrow();
88 >        } catch (CompletionException success) {
89 >            assertTrue(success.getCause() instanceof CFException);
90 >        }
91 >        try {
92 >            f.getNow(null);
93 >            shouldThrow();
94 >        } catch (CompletionException success) {
95 >            assertTrue(success.getCause() instanceof CFException);
96 >        }
97 >        try {
98 >            f.get();
99 >            shouldThrow();
100 >        } catch (ExecutionException success) {
101 >            assertTrue(success.getCause() instanceof CFException);
102 >        } catch (Throwable fail) { threadUnexpectedException(fail); }
103 >        assertTrue(f.isDone());
104 >        assertFalse(f.isCancelled());
105 >        assertTrue(f.toString().contains("[Completed exceptionally]"));
106 >    }
107 >
108 >    void checkCompletedWithWrappedCFException(CompletableFuture<?> f,
109 >                                              CFException ex) {
110 >        try {
111 >            f.get(LONG_DELAY_MS, MILLISECONDS);
112 >            shouldThrow();
113 >        } catch (ExecutionException success) {
114 >            assertSame(ex, success.getCause());
115 >        } catch (Throwable fail) { threadUnexpectedException(fail); }
116 >        try {
117 >            f.join();
118 >            shouldThrow();
119 >        } catch (CompletionException success) {
120 >            assertSame(ex, success.getCause());
121 >        }
122 >        try {
123 >            f.getNow(null);
124 >            shouldThrow();
125 >        } catch (CompletionException success) {
126 >            assertSame(ex, success.getCause());
127 >        }
128 >        try {
129 >            f.get();
130 >            shouldThrow();
131 >        } catch (ExecutionException success) {
132 >            assertSame(ex, success.getCause());
133 >        } catch (Throwable fail) { threadUnexpectedException(fail); }
134 >        assertTrue(f.isDone());
135 >        assertFalse(f.isCancelled());
136 >        assertTrue(f.toString().contains("[Completed exceptionally]"));
137 >    }
138 >
139 >    void checkCancelled(CompletableFuture<?> f) {
140 >        try {
141 >            f.get(LONG_DELAY_MS, MILLISECONDS);
142 >            shouldThrow();
143 >        } catch (CancellationException success) {
144 >        } catch (Throwable fail) { threadUnexpectedException(fail); }
145 >        try {
146 >            f.join();
147 >            shouldThrow();
148 >        } catch (CancellationException success) {}
149 >        try {
150 >            f.getNow(null);
151 >            shouldThrow();
152 >        } catch (CancellationException success) {}
153 >        try {
154 >            f.get();
155 >            shouldThrow();
156 >        } catch (CancellationException success) {
157 >        } catch (Throwable fail) { threadUnexpectedException(fail); }
158 >        assertTrue(f.isDone());
159 >        assertTrue(f.isCompletedExceptionally());
160 >        assertTrue(f.isCancelled());
161 >        assertTrue(f.toString().contains("[Completed exceptionally]"));
162 >    }
163 >
164 >    void checkCompletedWithWrappedCancellationException(CompletableFuture<?> f) {
165 >        try {
166 >            f.get(LONG_DELAY_MS, MILLISECONDS);
167 >            shouldThrow();
168 >        } catch (ExecutionException success) {
169 >            assertTrue(success.getCause() instanceof CancellationException);
170 >        } catch (Throwable fail) { threadUnexpectedException(fail); }
171 >        try {
172 >            f.join();
173 >            shouldThrow();
174 >        } catch (CompletionException success) {
175 >            assertTrue(success.getCause() instanceof CancellationException);
176 >        }
177 >        try {
178 >            f.getNow(null);
179 >            shouldThrow();
180 >        } catch (CompletionException success) {
181 >            assertTrue(success.getCause() instanceof CancellationException);
182 >        }
183 >        try {
184 >            f.get();
185 >            shouldThrow();
186 >        } catch (ExecutionException success) {
187 >            assertTrue(success.getCause() instanceof CancellationException);
188 >        } catch (Throwable fail) { threadUnexpectedException(fail); }
189 >        assertTrue(f.isDone());
190 >        assertFalse(f.isCancelled());
191 >        assertTrue(f.isCompletedExceptionally());
192 >        assertTrue(f.toString().contains("[Completed exceptionally]"));
193 >    }
194 >
195 >    /**
196 >     * A newly constructed CompletableFuture is incomplete, as indicated
197 >     * by methods isDone, isCancelled, and getNow
198 >     */
199 >    public void testConstructor() {
200 >        CompletableFuture<Integer> f = new CompletableFuture<>();
201 >        checkIncomplete(f);
202 >    }
203 >
204 >    /**
205 >     * complete completes normally, as indicated by methods isDone,
206 >     * isCancelled, join, get, and getNow
207 >     */
208 >    public void testComplete() {
209 >        CompletableFuture<Integer> f = new CompletableFuture<>();
210 >        checkIncomplete(f);
211 >        f.complete(one);
212 >        checkCompletedNormally(f, one);
213 >    }
214 >
215 >    /**
216 >     * completeExceptionally completes exceptionally, as indicated by
217 >     * methods isDone, isCancelled, join, get, and getNow
218 >     */
219 >    public void testCompleteExceptionally() {
220 >        CompletableFuture<Integer> f = new CompletableFuture<>();
221 >        checkIncomplete(f);
222 >        f.completeExceptionally(new CFException());
223 >        checkCompletedWithWrappedCFException(f);
224 >    }
225 >
226 >    /**
227 >     * cancel completes exceptionally and reports cancelled, as indicated by
228 >     * methods isDone, isCancelled, join, get, and getNow
229 >     */
230 >    public void testCancel() {
231 >        CompletableFuture<Integer> f = new CompletableFuture<>();
232 >        checkIncomplete(f);
233 >        assertTrue(f.cancel(true));
234 >        checkCancelled(f);
235 >    }
236 >
237 >    /**
238 >     * obtrudeValue forces completion with given value
239 >     */
240 >    public void testObtrudeValue() {
241 >        CompletableFuture<Integer> f = new CompletableFuture<>();
242 >        checkIncomplete(f);
243 >        f.complete(one);
244 >        checkCompletedNormally(f, one);
245 >        f.obtrudeValue(three);
246 >        checkCompletedNormally(f, three);
247 >        f.obtrudeValue(two);
248 >        checkCompletedNormally(f, two);
249 >        f = new CompletableFuture<>();
250 >        f.obtrudeValue(three);
251 >        checkCompletedNormally(f, three);
252 >        f.obtrudeValue(null);
253 >        checkCompletedNormally(f, null);
254 >        f = new CompletableFuture<>();
255 >        f.completeExceptionally(new CFException());
256 >        f.obtrudeValue(four);
257 >        checkCompletedNormally(f, four);
258 >    }
259 >
260 >    /**
261 >     * obtrudeException forces completion with given exception
262 >     */
263 >    public void testObtrudeException() {
264 >        CompletableFuture<Integer> f = new CompletableFuture<>();
265 >        checkIncomplete(f);
266 >        f.complete(one);
267 >        checkCompletedNormally(f, one);
268 >        f.obtrudeException(new CFException());
269 >        checkCompletedWithWrappedCFException(f);
270 >        f = new CompletableFuture<>();
271 >        f.obtrudeException(new CFException());
272 >        checkCompletedWithWrappedCFException(f);
273 >        f = new CompletableFuture<>();
274 >        f.completeExceptionally(new CFException());
275 >        f.obtrudeValue(four);
276 >        checkCompletedNormally(f, four);
277 >        f.obtrudeException(new CFException());
278 >        checkCompletedWithWrappedCFException(f);
279 >    }
280 >
281 >    /**
282 >     * getNumberOfDependents returns number of dependent tasks
283 >     */
284 >    public void testGetNumberOfDependents() {
285 >        CompletableFuture<Integer> f = new CompletableFuture<>();
286 >        assertEquals(0, f.getNumberOfDependents());
287 >        CompletableFuture g = f.thenRun(new Noop());
288 >        assertEquals(1, f.getNumberOfDependents());
289 >        assertEquals(0, g.getNumberOfDependents());
290 >        CompletableFuture h = f.thenRun(new Noop());
291 >        assertEquals(2, f.getNumberOfDependents());
292 >        f.complete(1);
293 >        checkCompletedNormally(g, null);
294 >        assertEquals(0, f.getNumberOfDependents());
295 >        assertEquals(0, g.getNumberOfDependents());
296      }
297  
298 +    /**
299 +     * toString indicates current completion state
300 +     */
301      public void testToString() {
302          CompletableFuture<String> f;
303  
# Line 46 | Line 311 | public class CompletableFutureTest exten
311          f.completeExceptionally(new IndexOutOfBoundsException());
312          assertTrue(f.toString().contains("[Completed exceptionally]"));
313      }
314 +
315 +    /**
316 +     * completedFuture returns a completed CompletableFuture with given value
317 +     */
318 +    public void testCompletedFuture() {
319 +        CompletableFuture<String> f = CompletableFuture.completedFuture("test");
320 +        checkCompletedNormally(f, "test");
321 +    }
322 +
323 +    // Choose non-commutative actions for better coverage
324 +
325 +    // A non-commutative function that handles and produces null values as well.
326 +    static Integer subtract(Integer x, Integer y) {
327 +        return (x == null && y == null) ? null :
328 +            ((x == null) ? 42 : x.intValue())
329 +            - ((y == null) ? 99 : y.intValue());
330 +    }
331 +
332 +    // A function that handles and produces null values as well.
333 +    static Integer inc(Integer x) {
334 +        return (x == null) ? null : x + 1;
335 +    }
336 +
337 +    static final Supplier<Integer> supplyOne =
338 +        () -> Integer.valueOf(1);
339 +    static final Function<Integer, Integer> inc =
340 +        (Integer x) -> Integer.valueOf(x.intValue() + 1);
341 +    static final BiFunction<Integer, Integer, Integer> subtract =
342 +        (Integer x, Integer y) -> subtract(x, y);
343 +    static final class IncAction implements Consumer<Integer> {
344 +        int invocationCount = 0;
345 +        Integer value;
346 +        public void accept(Integer x) {
347 +            invocationCount++;
348 +            value = inc(x);
349 +        }
350 +    }
351 +    static final class IncFunction implements Function<Integer,Integer> {
352 +        int invocationCount = 0;
353 +        Integer value;
354 +        public Integer apply(Integer x) {
355 +            invocationCount++;
356 +            return value = inc(x);
357 +        }
358 +    }
359 +    static final class SubtractAction implements BiConsumer<Integer, Integer> {
360 +        int invocationCount = 0;
361 +        Integer value;
362 +        // Check this action was invoked exactly once when result is computed.
363 +        public void accept(Integer x, Integer y) {
364 +            invocationCount++;
365 +            value = subtract(x, y);
366 +        }
367 +    }
368 +    static final class SubtractFunction implements BiFunction<Integer, Integer, Integer> {
369 +        int invocationCount = 0;
370 +        Integer value;
371 +        // Check this action was invoked exactly once when result is computed.
372 +        public Integer apply(Integer x, Integer y) {
373 +            invocationCount++;
374 +            return value = subtract(x, y);
375 +        }
376 +    }
377 +    static final class Noop implements Runnable {
378 +        int invocationCount = 0;
379 +        public void run() {
380 +            invocationCount++;
381 +        }
382 +    }
383 +
384 +    static final class FailingSupplier implements Supplier<Integer> {
385 +        int invocationCount = 0;
386 +        public Integer get() {
387 +            invocationCount++;
388 +            throw new CFException();
389 +        }
390 +    }
391 +    static final class FailingConsumer implements Consumer<Integer> {
392 +        int invocationCount = 0;
393 +        public void accept(Integer x) {
394 +            invocationCount++;
395 +            throw new CFException();
396 +        }
397 +    }
398 +    static final class FailingBiConsumer implements BiConsumer<Integer, Integer> {
399 +        int invocationCount = 0;
400 +        public void accept(Integer x, Integer y) {
401 +            invocationCount++;
402 +            throw new CFException();
403 +        }
404 +    }
405 +    static final class FailingFunction implements Function<Integer, Integer> {
406 +        int invocationCount = 0;
407 +        public Integer apply(Integer x) {
408 +            invocationCount++;
409 +            throw new CFException();
410 +        }
411 +    }
412 +    static final class FailingBiFunction implements BiFunction<Integer, Integer, Integer> {
413 +        int invocationCount = 0;
414 +        public Integer apply(Integer x, Integer y) {
415 +            invocationCount++;
416 +            throw new CFException();
417 +        }
418 +    }
419 +    static final class FailingRunnable implements Runnable {
420 +        int invocationCount = 0;
421 +        public void run() {
422 +            invocationCount++;
423 +            throw new CFException();
424 +        }
425 +    }
426 +
427 +    static final class CompletableFutureInc
428 +        implements Function<Integer, CompletableFuture<Integer>> {
429 +        int invocationCount = 0;
430 +        public CompletableFuture<Integer> apply(Integer x) {
431 +            invocationCount++;
432 +            CompletableFuture<Integer> f = new CompletableFuture<>();
433 +            f.complete(inc(x));
434 +            return f;
435 +        }
436 +    }
437 +
438 +    static final class FailingCompletableFutureFunction
439 +        implements Function<Integer, CompletableFuture<Integer>> {
440 +        int invocationCount = 0;
441 +        public CompletableFuture<Integer> apply(Integer x) {
442 +            invocationCount++;
443 +            throw new CFException();
444 +        }
445 +    }
446 +
447 +    // Used for explicit executor tests
448 +    static final class ThreadExecutor implements Executor {
449 +        AtomicInteger count = new AtomicInteger(0);
450 +
451 +        public void execute(Runnable r) {
452 +            count.getAndIncrement();
453 +            new Thread(r).start();
454 +        }
455 +    }
456 +
457 +    /**
458 +     * Permits the testing of parallel code for the 3 different
459 +     * execution modes without repeating all the testing code.
460 +     */
461 +    enum ExecutionMode {
462 +        DEFAULT {
463 +            public void checkExecutionMode() {
464 +                assertNull(ForkJoinTask.getPool());
465 +            }
466 +            public <T> CompletableFuture<Void> thenRun
467 +                (CompletableFuture<T> f, Runnable a) {
468 +                return f.thenRun(a);
469 +            }
470 +            public <T> CompletableFuture<Void> thenAccept
471 +                (CompletableFuture<T> f, Consumer<? super T> a) {
472 +                return f.thenAccept(a);
473 +            }
474 +            public <T,U> CompletableFuture<U> thenApply
475 +                (CompletableFuture<T> f, Function<? super T,U> a) {
476 +                return f.thenApply(a);
477 +            }
478 +            public <T,U> CompletableFuture<U> thenCompose
479 +                (CompletableFuture<T> f,
480 +                 Function<? super T,? extends CompletionStage<U>> a) {
481 +                return f.thenCompose(a);
482 +            }
483 +            public <T,U> CompletableFuture<U> handle
484 +                (CompletableFuture<T> f,
485 +                 BiFunction<? super T,Throwable,? extends U> a) {
486 +                return f.handle(a);
487 +            }
488 +            public <T> CompletableFuture<T> whenComplete
489 +                (CompletableFuture<T> f,
490 +                 BiConsumer<? super T,? super Throwable> a) {
491 +                return f.whenComplete(a);
492 +            }
493 +            public <T,U> CompletableFuture<Void> runAfterBoth
494 +                (CompletableFuture<T> f, CompletableFuture<U> g, Runnable a) {
495 +                return f.runAfterBoth(g, a);
496 +            }
497 +            public <T,U> CompletableFuture<Void> thenAcceptBoth
498 +                (CompletableFuture<T> f,
499 +                 CompletionStage<? extends U> g,
500 +                 BiConsumer<? super T,? super U> a) {
501 +                return f.thenAcceptBoth(g, a);
502 +            }
503 +            public <T,U,V> CompletableFuture<V> thenCombine
504 +                (CompletableFuture<T> f,
505 +                 CompletionStage<? extends U> g,
506 +                 BiFunction<? super T,? super U,? extends V> a) {
507 +                return f.thenCombine(g, a);
508 +            }
509 +            public <T> CompletableFuture<Void> runAfterEither
510 +                (CompletableFuture<T> f,
511 +                 CompletionStage<?> g,
512 +                 java.lang.Runnable a) {
513 +                return f.runAfterEither(g, a);
514 +            }
515 +            public <T> CompletableFuture<Void> acceptEither
516 +                (CompletableFuture<T> f,
517 +                 CompletionStage<? extends T> g,
518 +                 Consumer<? super T> a) {
519 +                return f.acceptEither(g, a);
520 +            }
521 +            public <T,U> CompletableFuture<U> applyToEither
522 +                (CompletableFuture<T> f,
523 +                 CompletionStage<? extends T> g,
524 +                 Function<? super T,U> a) {
525 +                return f.applyToEither(g, a);
526 +            }
527 +        },
528 +
529 +        ASYNC {
530 +            public void checkExecutionMode() {
531 +                assertSame(ForkJoinPool.commonPool(),
532 +                           ForkJoinTask.getPool());
533 +            }
534 +            public <T> CompletableFuture<Void> thenRun
535 +                (CompletableFuture<T> f, Runnable a) {
536 +                return f.thenRunAsync(a);
537 +            }
538 +            public <T> CompletableFuture<Void> thenAccept
539 +                (CompletableFuture<T> f, Consumer<? super T> a) {
540 +                return f.thenAcceptAsync(a);
541 +            }
542 +            public <T,U> CompletableFuture<U> thenApply
543 +                (CompletableFuture<T> f, Function<? super T,U> a) {
544 +                return f.thenApplyAsync(a);
545 +            }
546 +            public <T,U> CompletableFuture<U> thenCompose
547 +                (CompletableFuture<T> f,
548 +                 Function<? super T,? extends CompletionStage<U>> a) {
549 +                return f.thenComposeAsync(a);
550 +            }
551 +            public <T,U> CompletableFuture<U> handle
552 +                (CompletableFuture<T> f,
553 +                 BiFunction<? super T,Throwable,? extends U> a) {
554 +                return f.handleAsync(a);
555 +            }
556 +            public <T> CompletableFuture<T> whenComplete
557 +                (CompletableFuture<T> f,
558 +                 BiConsumer<? super T,? super Throwable> a) {
559 +                return f.whenCompleteAsync(a);
560 +            }
561 +            public <T,U> CompletableFuture<Void> runAfterBoth
562 +                (CompletableFuture<T> f, CompletableFuture<U> g, Runnable a) {
563 +                return f.runAfterBothAsync(g, a);
564 +            }
565 +            public <T,U> CompletableFuture<Void> thenAcceptBoth
566 +                (CompletableFuture<T> f,
567 +                 CompletionStage<? extends U> g,
568 +                 BiConsumer<? super T,? super U> a) {
569 +                return f.thenAcceptBothAsync(g, a);
570 +            }
571 +            public <T,U,V> CompletableFuture<V> thenCombine
572 +                (CompletableFuture<T> f,
573 +                 CompletionStage<? extends U> g,
574 +                 BiFunction<? super T,? super U,? extends V> a) {
575 +                return f.thenCombineAsync(g, a);
576 +            }
577 +            public <T> CompletableFuture<Void> runAfterEither
578 +                (CompletableFuture<T> f,
579 +                 CompletionStage<?> g,
580 +                 java.lang.Runnable a) {
581 +                return f.runAfterEitherAsync(g, a);
582 +            }
583 +            public <T> CompletableFuture<Void> acceptEither
584 +                (CompletableFuture<T> f,
585 +                 CompletionStage<? extends T> g,
586 +                 Consumer<? super T> a) {
587 +                return f.acceptEitherAsync(g, a);
588 +            }
589 +            public <T,U> CompletableFuture<U> applyToEither
590 +                (CompletableFuture<T> f,
591 +                 CompletionStage<? extends T> g,
592 +                 Function<? super T,U> a) {
593 +                return f.applyToEitherAsync(g, a);
594 +            }
595 +        },
596 +
597 +        EXECUTOR {
598 +            public void checkExecutionMode() {
599 +                //TODO
600 +            }
601 +            public <T> CompletableFuture<Void> thenRun
602 +                (CompletableFuture<T> f, Runnable a) {
603 +                return f.thenRunAsync(a, new ThreadExecutor());
604 +            }
605 +            public <T> CompletableFuture<Void> thenAccept
606 +                (CompletableFuture<T> f, Consumer<? super T> a) {
607 +                return f.thenAcceptAsync(a, new ThreadExecutor());
608 +            }
609 +            public <T,U> CompletableFuture<U> thenApply
610 +                (CompletableFuture<T> f, Function<? super T,U> a) {
611 +                return f.thenApplyAsync(a, new ThreadExecutor());
612 +            }
613 +            public <T,U> CompletableFuture<U> thenCompose
614 +                (CompletableFuture<T> f,
615 +                 Function<? super T,? extends CompletionStage<U>> a) {
616 +                return f.thenComposeAsync(a, new ThreadExecutor());
617 +            }
618 +            public <T,U> CompletableFuture<U> handle
619 +                (CompletableFuture<T> f,
620 +                 BiFunction<? super T,Throwable,? extends U> a) {
621 +                return f.handleAsync(a, new ThreadExecutor());
622 +            }
623 +            public <T> CompletableFuture<T> whenComplete
624 +                (CompletableFuture<T> f,
625 +                 BiConsumer<? super T,? super Throwable> a) {
626 +                return f.whenCompleteAsync(a, new ThreadExecutor());
627 +            }
628 +            public <T,U> CompletableFuture<Void> runAfterBoth
629 +                (CompletableFuture<T> f, CompletableFuture<U> g, Runnable a) {
630 +                return f.runAfterBothAsync(g, a, new ThreadExecutor());
631 +            }
632 +            public <T,U> CompletableFuture<Void> thenAcceptBoth
633 +                (CompletableFuture<T> f,
634 +                 CompletionStage<? extends U> g,
635 +                 BiConsumer<? super T,? super U> a) {
636 +                return f.thenAcceptBothAsync(g, a, new ThreadExecutor());
637 +            }
638 +            public <T,U,V> CompletableFuture<V> thenCombine
639 +                (CompletableFuture<T> f,
640 +                 CompletionStage<? extends U> g,
641 +                 BiFunction<? super T,? super U,? extends V> a) {
642 +                return f.thenCombineAsync(g, a, new ThreadExecutor());
643 +            }
644 +            public <T> CompletableFuture<Void> runAfterEither
645 +                (CompletableFuture<T> f,
646 +                 CompletionStage<?> g,
647 +                 java.lang.Runnable a) {
648 +                return f.runAfterEitherAsync(g, a, new ThreadExecutor());
649 +            }
650 +            public <T> CompletableFuture<Void> acceptEither
651 +                (CompletableFuture<T> f,
652 +                 CompletionStage<? extends T> g,
653 +                 Consumer<? super T> a) {
654 +                return f.acceptEitherAsync(g, a, new ThreadExecutor());
655 +            }
656 +            public <T,U> CompletableFuture<U> applyToEither
657 +                (CompletableFuture<T> f,
658 +                 CompletionStage<? extends T> g,
659 +                 Function<? super T,U> a) {
660 +                return f.applyToEitherAsync(g, a, new ThreadExecutor());
661 +            }
662 +        };
663 +
664 +        public abstract void checkExecutionMode();
665 +        public abstract <T> CompletableFuture<Void> thenRun
666 +            (CompletableFuture<T> f, Runnable a);
667 +        public abstract <T> CompletableFuture<Void> thenAccept
668 +            (CompletableFuture<T> f, Consumer<? super T> a);
669 +        public abstract <T,U> CompletableFuture<U> thenApply
670 +            (CompletableFuture<T> f, Function<? super T,U> a);
671 +        public abstract <T,U> CompletableFuture<U> thenCompose
672 +            (CompletableFuture<T> f,
673 +             Function<? super T,? extends CompletionStage<U>> a);
674 +        public abstract <T,U> CompletableFuture<U> handle
675 +            (CompletableFuture<T> f,
676 +             BiFunction<? super T,Throwable,? extends U> a);
677 +        public abstract <T> CompletableFuture<T> whenComplete
678 +            (CompletableFuture<T> f,
679 +             BiConsumer<? super T,? super Throwable> a);
680 +        public abstract <T,U> CompletableFuture<Void> runAfterBoth
681 +            (CompletableFuture<T> f, CompletableFuture<U> g, Runnable a);
682 +        public abstract <T,U> CompletableFuture<Void> thenAcceptBoth
683 +            (CompletableFuture<T> f,
684 +             CompletionStage<? extends U> g,
685 +             BiConsumer<? super T,? super U> a);
686 +        public abstract <T,U,V> CompletableFuture<V> thenCombine
687 +            (CompletableFuture<T> f,
688 +             CompletionStage<? extends U> g,
689 +             BiFunction<? super T,? super U,? extends V> a);
690 +        public abstract <T> CompletableFuture<Void> runAfterEither
691 +            (CompletableFuture<T> f,
692 +             CompletionStage<?> g,
693 +             java.lang.Runnable a);
694 +        public abstract <T> CompletableFuture<Void> acceptEither
695 +            (CompletableFuture<T> f,
696 +             CompletionStage<? extends T> g,
697 +             Consumer<? super T> a);
698 +        public abstract <T,U> CompletableFuture<U> applyToEither
699 +            (CompletableFuture<T> f,
700 +             CompletionStage<? extends T> g,
701 +             Function<? super T,U> a);
702 +    }
703 +
704 +    /**
705 +     * exceptionally action is not invoked when source completes
706 +     * normally, and source result is propagated
707 +     */
708 +    public void testExceptionally_normalCompletion() {
709 +        for (boolean createIncomplete : new boolean[] { true, false })
710 +        for (Integer v1 : new Integer[] { 1, null })
711 +    {
712 +        final AtomicInteger a = new AtomicInteger(0);
713 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
714 +        if (!createIncomplete) f.complete(v1);
715 +        final CompletableFuture<Integer> g = f.exceptionally
716 +            ((Throwable t) -> {
717 +                // Should not be called
718 +                a.getAndIncrement();
719 +                throw new AssertionError();
720 +            });
721 +        if (createIncomplete) f.complete(v1);
722 +
723 +        checkCompletedNormally(g, v1);
724 +        checkCompletedNormally(f, v1);
725 +        assertEquals(0, a.get());
726 +    }}
727 +
728 +
729 +    /**
730 +     * exceptionally action completes with function value on source
731 +     * exception
732 +     */
733 +    public void testExceptionally_exceptionalCompletion() {
734 +        for (boolean createIncomplete : new boolean[] { true, false })
735 +        for (Integer v1 : new Integer[] { 1, null })
736 +    {
737 +        final AtomicInteger a = new AtomicInteger(0);
738 +        final CFException ex = new CFException();
739 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
740 +        if (!createIncomplete) f.completeExceptionally(ex);
741 +        final CompletableFuture<Integer> g = f.exceptionally
742 +            ((Throwable t) -> {
743 +                threadAssertSame(t, ex);
744 +                a.getAndIncrement();
745 +                return v1;
746 +            });
747 +        if (createIncomplete) f.completeExceptionally(ex);
748 +
749 +        checkCompletedNormally(g, v1);
750 +        assertEquals(1, a.get());
751 +    }}
752 +
753 +    public void testExceptionally_exceptionalCompletionActionFailed() {
754 +        for (boolean createIncomplete : new boolean[] { true, false })
755 +        for (Integer v1 : new Integer[] { 1, null })
756 +    {
757 +        final AtomicInteger a = new AtomicInteger(0);
758 +        final CFException ex1 = new CFException();
759 +        final CFException ex2 = new CFException();
760 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
761 +        if (!createIncomplete) f.completeExceptionally(ex1);
762 +        final CompletableFuture<Integer> g = f.exceptionally
763 +            ((Throwable t) -> {
764 +                threadAssertSame(t, ex1);
765 +                a.getAndIncrement();
766 +                throw ex2;
767 +            });
768 +        if (createIncomplete) f.completeExceptionally(ex1);
769 +
770 +        checkCompletedWithWrappedCFException(g, ex2);
771 +        assertEquals(1, a.get());
772 +    }}
773 +
774 +    /**
775 +     * handle action completes normally with function value on normal
776 +     * completion of source
777 +     */
778 +    public void testHandle_normalCompletion() {
779 +        for (ExecutionMode m : ExecutionMode.values())
780 +        for (boolean createIncomplete : new boolean[] { true, false })
781 +        for (Integer v1 : new Integer[] { 1, null })
782 +    {
783 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
784 +        final AtomicInteger a = new AtomicInteger(0);
785 +        if (!createIncomplete) f.complete(v1);
786 +        final CompletableFuture<Integer> g = m.handle
787 +            (f,
788 +             (Integer x, Throwable t) -> {
789 +                threadAssertSame(x, v1);
790 +                threadAssertNull(t);
791 +                a.getAndIncrement();
792 +                return inc(v1);
793 +            });
794 +        if (createIncomplete) f.complete(v1);
795 +
796 +        checkCompletedNormally(g, inc(v1));
797 +        checkCompletedNormally(f, v1);
798 +        assertEquals(1, a.get());
799 +    }}
800 +
801 +    /**
802 +     * handle action completes normally with function value on
803 +     * exceptional completion of source
804 +     */
805 +    public void testHandle_exceptionalCompletion() {
806 +        for (ExecutionMode m : ExecutionMode.values())
807 +        for (boolean createIncomplete : new boolean[] { true, false })
808 +        for (Integer v1 : new Integer[] { 1, null })
809 +    {
810 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
811 +        final AtomicInteger a = new AtomicInteger(0);
812 +        final CFException ex = new CFException();
813 +        if (!createIncomplete) f.completeExceptionally(ex);
814 +        final CompletableFuture<Integer> g = m.handle
815 +            (f,
816 +             (Integer x, Throwable t) -> {
817 +                threadAssertNull(x);
818 +                threadAssertSame(t, ex);
819 +                a.getAndIncrement();
820 +                return v1;
821 +            });
822 +        if (createIncomplete) f.completeExceptionally(ex);
823 +
824 +        checkCompletedNormally(g, v1);
825 +        checkCompletedWithWrappedCFException(f, ex);
826 +        assertEquals(1, a.get());
827 +    }}
828 +
829 +    /**
830 +     * handle action completes normally with function value on
831 +     * cancelled source
832 +     */
833 +    public void testHandle_sourceCancelled() {
834 +        for (ExecutionMode m : ExecutionMode.values())
835 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
836 +        for (boolean createIncomplete : new boolean[] { true, false })
837 +        for (Integer v1 : new Integer[] { 1, null })
838 +    {
839 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
840 +        final AtomicInteger a = new AtomicInteger(0);
841 +        if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
842 +        final CompletableFuture<Integer> g = m.handle
843 +            (f,
844 +             (Integer x, Throwable t) -> {
845 +                threadAssertNull(x);
846 +                threadAssertTrue(t instanceof CancellationException);
847 +                a.getAndIncrement();
848 +                return v1;
849 +            });
850 +        if (createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
851 +
852 +        checkCompletedNormally(g, v1);
853 +        checkCancelled(f);
854 +        assertEquals(1, a.get());
855 +    }}
856 +
857 +    /**
858 +     * handle result completes exceptionally if action does
859 +     */
860 +    public void testHandle_sourceFailedActionFailed() {
861 +        for (ExecutionMode m : ExecutionMode.values())
862 +        for (boolean createIncomplete : new boolean[] { true, false })
863 +    {
864 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
865 +        final AtomicInteger a = new AtomicInteger(0);
866 +        final CFException ex1 = new CFException();
867 +        final CFException ex2 = new CFException();
868 +        if (!createIncomplete) f.completeExceptionally(ex1);
869 +        final CompletableFuture<Integer> g = m.handle
870 +            (f,
871 +             (Integer x, Throwable t) -> {
872 +                threadAssertNull(x);
873 +                threadAssertSame(ex1, t);
874 +                a.getAndIncrement();
875 +                throw ex2;
876 +            });
877 +        if (createIncomplete) f.completeExceptionally(ex1);
878 +
879 +        checkCompletedWithWrappedCFException(g, ex2);
880 +        checkCompletedWithWrappedCFException(f, ex1);
881 +        assertEquals(1, a.get());
882 +    }}
883 +
884 +    public void testHandle_sourceCompletedNormallyActionFailed() {
885 +        for (ExecutionMode m : ExecutionMode.values())
886 +        for (boolean createIncomplete : new boolean[] { true, false })
887 +        for (Integer v1 : new Integer[] { 1, null })
888 +    {
889 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
890 +        final AtomicInteger a = new AtomicInteger(0);
891 +        final CFException ex = new CFException();
892 +        if (!createIncomplete) f.complete(v1);
893 +        final CompletableFuture<Integer> g = m.handle
894 +            (f,
895 +             (Integer x, Throwable t) -> {
896 +                threadAssertSame(x, v1);
897 +                threadAssertNull(t);
898 +                a.getAndIncrement();
899 +                throw ex;
900 +            });
901 +        if (createIncomplete) f.complete(v1);
902 +
903 +        checkCompletedWithWrappedCFException(g, ex);
904 +        checkCompletedNormally(f, v1);
905 +        assertEquals(1, a.get());
906 +    }}
907 +
908 +    /**
909 +     * runAsync completes after running Runnable
910 +     */
911 +    public void testRunAsync() {
912 +        Noop r = new Noop();
913 +        CompletableFuture<Void> f = CompletableFuture.runAsync(r);
914 +        assertNull(f.join());
915 +        assertEquals(1, r.invocationCount);
916 +        checkCompletedNormally(f, null);
917 +    }
918 +
919 +    /**
920 +     * runAsync with executor completes after running Runnable
921 +     */
922 +    public void testRunAsync2() {
923 +        Noop r = new Noop();
924 +        ThreadExecutor exec = new ThreadExecutor();
925 +        CompletableFuture<Void> f = CompletableFuture.runAsync(r, exec);
926 +        assertNull(f.join());
927 +        assertEquals(1, r.invocationCount);
928 +        checkCompletedNormally(f, null);
929 +        assertEquals(1, exec.count.get());
930 +    }
931 +
932 +    /**
933 +     * failing runAsync completes exceptionally after running Runnable
934 +     */
935 +    public void testRunAsync3() {
936 +        FailingRunnable r = new FailingRunnable();
937 +        CompletableFuture<Void> f = CompletableFuture.runAsync(r);
938 +        checkCompletedWithWrappedCFException(f);
939 +        assertEquals(1, r.invocationCount);
940 +    }
941 +
942 +    /**
943 +     * supplyAsync completes with result of supplier
944 +     */
945 +    public void testSupplyAsync() {
946 +        CompletableFuture<Integer> f;
947 +        f = CompletableFuture.supplyAsync(supplyOne);
948 +        assertEquals(f.join(), one);
949 +        checkCompletedNormally(f, one);
950 +    }
951 +
952 +    /**
953 +     * supplyAsync with executor completes with result of supplier
954 +     */
955 +    public void testSupplyAsync2() {
956 +        CompletableFuture<Integer> f;
957 +        f = CompletableFuture.supplyAsync(supplyOne, new ThreadExecutor());
958 +        assertEquals(f.join(), one);
959 +        checkCompletedNormally(f, one);
960 +    }
961 +
962 +    /**
963 +     * Failing supplyAsync completes exceptionally
964 +     */
965 +    public void testSupplyAsync3() {
966 +        FailingSupplier r = new FailingSupplier();
967 +        CompletableFuture<Integer> f = CompletableFuture.supplyAsync(r);
968 +        checkCompletedWithWrappedCFException(f);
969 +        assertEquals(1, r.invocationCount);
970 +    }
971 +
972 +    // seq completion methods
973 +
974 +    /**
975 +     * thenRun result completes normally after normal completion of source
976 +     */
977 +    public void testThenRun_normalCompletion() {
978 +        for (ExecutionMode m : ExecutionMode.values())
979 +        for (boolean createIncomplete : new boolean[] { true, false })
980 +        for (Integer v1 : new Integer[] { 1, null })
981 +    {
982 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
983 +        final Noop r = new Noop();
984 +        if (!createIncomplete) f.complete(v1);
985 +        final CompletableFuture<Void> g = m.thenRun(f, r);
986 +        if (createIncomplete) {
987 +            checkIncomplete(g);
988 +            f.complete(v1);
989 +        }
990 +
991 +        checkCompletedNormally(g, null);
992 +        checkCompletedNormally(f, v1);
993 +        assertEquals(1, r.invocationCount);
994 +    }}
995 +
996 +    /**
997 +     * thenRun result completes exceptionally after exceptional
998 +     * completion of source
999 +     */
1000 +    public void testThenRun_exceptionalCompletion() {
1001 +        for (ExecutionMode m : ExecutionMode.values())
1002 +        for (boolean createIncomplete : new boolean[] { true, false })
1003 +    {
1004 +        final CFException ex = new CFException();
1005 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1006 +        final Noop r = new Noop();
1007 +        if (!createIncomplete) f.completeExceptionally(ex);
1008 +        final CompletableFuture<Void> g = m.thenRun(f, r);
1009 +        if (createIncomplete) {
1010 +            checkIncomplete(g);
1011 +            f.completeExceptionally(ex);
1012 +        }
1013 +
1014 +        checkCompletedWithWrappedCFException(g, ex);
1015 +        checkCompletedWithWrappedCFException(f, ex);
1016 +        assertEquals(0, r.invocationCount);
1017 +    }}
1018 +
1019 +    /**
1020 +     * thenRun result completes exceptionally if source cancelled
1021 +     */
1022 +    public void testThenRun_sourceCancelled() {
1023 +        for (ExecutionMode m : ExecutionMode.values())
1024 +        for (boolean createIncomplete : new boolean[] { true, false })
1025 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1026 +    {
1027 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1028 +        final Noop r = new Noop();
1029 +        if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
1030 +        final CompletableFuture<Void> g = f.thenRun(r);
1031 +        if (createIncomplete) {
1032 +            checkIncomplete(g);
1033 +            assertTrue(f.cancel(mayInterruptIfRunning));
1034 +        }
1035 +
1036 +        checkCompletedWithWrappedCancellationException(g);
1037 +        checkCancelled(f);
1038 +        assertEquals(0, r.invocationCount);
1039 +    }}
1040 +
1041 +    /**
1042 +     * thenRun result completes exceptionally if action does
1043 +     */
1044 +    public void testThenRun_actionFailed() {
1045 +        for (ExecutionMode m : ExecutionMode.values())
1046 +        for (boolean createIncomplete : new boolean[] { true, false })
1047 +        for (Integer v1 : new Integer[] { 1, null })
1048 +    {
1049 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1050 +        final FailingRunnable r = new FailingRunnable();
1051 +        if (!createIncomplete) f.complete(v1);
1052 +        final CompletableFuture<Void> g = f.thenRun(r);
1053 +        if (createIncomplete) {
1054 +            checkIncomplete(g);
1055 +            f.complete(v1);
1056 +        }
1057 +
1058 +        checkCompletedWithWrappedCFException(g);
1059 +        checkCompletedNormally(f, v1);
1060 +    }}
1061 +
1062 +    /**
1063 +     * thenApply result completes normally after normal completion of source
1064 +     */
1065 +    public void testThenApply_normalCompletion() {
1066 +        for (ExecutionMode m : ExecutionMode.values())
1067 +        for (boolean createIncomplete : new boolean[] { true, false })
1068 +        for (Integer v1 : new Integer[] { 1, null })
1069 +    {
1070 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1071 +        final IncFunction r = new IncFunction();
1072 +        if (!createIncomplete) f.complete(v1);
1073 +        final CompletableFuture<Integer> g = m.thenApply(f, r);
1074 +        if (createIncomplete) {
1075 +            checkIncomplete(g);
1076 +            f.complete(v1);
1077 +        }
1078 +
1079 +        checkCompletedNormally(g, inc(v1));
1080 +        checkCompletedNormally(f, v1);
1081 +        assertEquals(1, r.invocationCount);
1082 +    }}
1083 +
1084 +    /**
1085 +     * thenApply result completes exceptionally after exceptional
1086 +     * completion of source
1087 +     */
1088 +    public void testThenApply_exceptionalCompletion() {
1089 +        for (ExecutionMode m : ExecutionMode.values())
1090 +        for (boolean createIncomplete : new boolean[] { true, false })
1091 +    {
1092 +        final CFException ex = new CFException();
1093 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1094 +        final IncFunction r = new IncFunction();
1095 +        if (!createIncomplete) f.completeExceptionally(ex);
1096 +        final CompletableFuture<Integer> g = m.thenApply(f, r);
1097 +        if (createIncomplete) {
1098 +            checkIncomplete(g);
1099 +            f.completeExceptionally(ex);
1100 +        }
1101 +
1102 +        checkCompletedWithWrappedCFException(g, ex);
1103 +        checkCompletedWithWrappedCFException(f, ex);
1104 +        assertEquals(0, r.invocationCount);
1105 +    }}
1106 +
1107 +    /**
1108 +     * thenApply result completes exceptionally if source cancelled
1109 +     */
1110 +    public void testThenApply_sourceCancelled() {
1111 +        for (ExecutionMode m : ExecutionMode.values())
1112 +        for (boolean createIncomplete : new boolean[] { true, false })
1113 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1114 +    {
1115 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1116 +        final IncFunction r = new IncFunction();
1117 +        if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
1118 +        final CompletableFuture<Integer> g = f.thenApply(r);
1119 +        if (createIncomplete) {
1120 +            checkIncomplete(g);
1121 +            assertTrue(f.cancel(mayInterruptIfRunning));
1122 +        }
1123 +
1124 +        checkCompletedWithWrappedCancellationException(g);
1125 +        checkCancelled(f);
1126 +        assertEquals(0, r.invocationCount);
1127 +    }}
1128 +
1129 +    /**
1130 +     * thenApply result completes exceptionally if action does
1131 +     */
1132 +    public void testThenApply_actionFailed() {
1133 +        for (ExecutionMode m : ExecutionMode.values())
1134 +        for (boolean createIncomplete : new boolean[] { true, false })
1135 +        for (Integer v1 : new Integer[] { 1, null })
1136 +    {
1137 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1138 +        final FailingFunction r = new FailingFunction();
1139 +        if (!createIncomplete) f.complete(v1);
1140 +        final CompletableFuture<Integer> g = f.thenApply(r);
1141 +        if (createIncomplete) {
1142 +            checkIncomplete(g);
1143 +            f.complete(v1);
1144 +        }
1145 +
1146 +        checkCompletedWithWrappedCFException(g);
1147 +        checkCompletedNormally(f, v1);
1148 +    }}
1149 +
1150 +    /**
1151 +     * thenAccept result completes normally after normal completion of source
1152 +     */
1153 +    public void testThenAccept_normalCompletion() {
1154 +        for (ExecutionMode m : ExecutionMode.values())
1155 +        for (boolean createIncomplete : new boolean[] { true, false })
1156 +        for (Integer v1 : new Integer[] { 1, null })
1157 +    {
1158 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1159 +        final IncAction r = new IncAction();
1160 +        if (!createIncomplete) f.complete(v1);
1161 +        final CompletableFuture<Void> g = m.thenAccept(f, r);
1162 +        if (createIncomplete) {
1163 +            checkIncomplete(g);
1164 +            f.complete(v1);
1165 +        }
1166 +
1167 +        checkCompletedNormally(g, null);
1168 +        checkCompletedNormally(f, v1);
1169 +        assertEquals(1, r.invocationCount);
1170 +        assertEquals(inc(v1), r.value);
1171 +    }}
1172 +
1173 +    /**
1174 +     * thenAccept result completes exceptionally after exceptional
1175 +     * completion of source
1176 +     */
1177 +    public void testThenAccept_exceptionalCompletion() {
1178 +        for (ExecutionMode m : ExecutionMode.values())
1179 +        for (boolean createIncomplete : new boolean[] { true, false })
1180 +    {
1181 +        final CFException ex = new CFException();
1182 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1183 +        final IncAction r = new IncAction();
1184 +        if (!createIncomplete) f.completeExceptionally(ex);
1185 +        final CompletableFuture<Void> g = m.thenAccept(f, r);
1186 +        if (createIncomplete) {
1187 +            checkIncomplete(g);
1188 +            f.completeExceptionally(ex);
1189 +        }
1190 +
1191 +        checkCompletedWithWrappedCFException(g, ex);
1192 +        checkCompletedWithWrappedCFException(f, ex);
1193 +        assertEquals(0, r.invocationCount);
1194 +    }}
1195 +
1196 +    /**
1197 +     * thenAccept result completes exceptionally if action does
1198 +     */
1199 +    public void testThenAccept_actionFailed() {
1200 +        for (ExecutionMode m : ExecutionMode.values())
1201 +        for (boolean createIncomplete : new boolean[] { true, false })
1202 +        for (Integer v1 : new Integer[] { 1, null })
1203 +    {
1204 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1205 +        final FailingConsumer r = new FailingConsumer();
1206 +        if (!createIncomplete) f.complete(v1);
1207 +        final CompletableFuture<Void> g = f.thenAccept(r);
1208 +        if (createIncomplete) {
1209 +            checkIncomplete(g);
1210 +            f.complete(v1);
1211 +        }
1212 +
1213 +        checkCompletedWithWrappedCFException(g);
1214 +        checkCompletedNormally(f, v1);
1215 +    }}
1216 +
1217 +    /**
1218 +     * thenAccept result completes exceptionally if source cancelled
1219 +     */
1220 +    public void testThenAccept_sourceCancelled() {
1221 +        for (ExecutionMode m : ExecutionMode.values())
1222 +        for (boolean createIncomplete : new boolean[] { true, false })
1223 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1224 +    {
1225 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1226 +        final IncAction r = new IncAction();
1227 +        if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
1228 +        final CompletableFuture<Void> g = f.thenAccept(r);
1229 +        if (createIncomplete) {
1230 +            checkIncomplete(g);
1231 +            assertTrue(f.cancel(mayInterruptIfRunning));
1232 +        }
1233 +
1234 +        checkCompletedWithWrappedCancellationException(g);
1235 +        checkCancelled(f);
1236 +        assertEquals(0, r.invocationCount);
1237 +    }}
1238 +
1239 +    /**
1240 +     * thenCombine result completes normally after normal completion
1241 +     * of sources
1242 +     */
1243 +    public void testThenCombine_normalCompletion() {
1244 +        for (ExecutionMode m : ExecutionMode.values())
1245 +        for (boolean createIncomplete : new boolean[] { true, false })
1246 +        for (boolean fFirst : new boolean[] { true, false })
1247 +        for (Integer v1 : new Integer[] { 1, null })
1248 +        for (Integer v2 : new Integer[] { 2, null })
1249 +    {
1250 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1251 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1252 +        final SubtractFunction r = new SubtractFunction();
1253 +
1254 +        if (fFirst) f.complete(v1); else g.complete(v2);
1255 +        if (!createIncomplete)
1256 +            if (!fFirst) f.complete(v1); else g.complete(v2);
1257 +        final CompletableFuture<Integer> h = m.thenCombine(f, g, r);
1258 +        if (createIncomplete) {
1259 +            checkIncomplete(h);
1260 +            assertEquals(0, r.invocationCount);
1261 +            if (!fFirst) f.complete(v1); else g.complete(v2);
1262 +        }
1263 +
1264 +        checkCompletedNormally(h, subtract(v1, v2));
1265 +        checkCompletedNormally(f, v1);
1266 +        checkCompletedNormally(g, v2);
1267 +        assertEquals(1, r.invocationCount);
1268 +    }}
1269 +
1270 +    /**
1271 +     * thenCombine result completes exceptionally after exceptional
1272 +     * completion of either source
1273 +     */
1274 +    public void testThenCombine_exceptionalCompletion() {
1275 +        for (ExecutionMode m : ExecutionMode.values())
1276 +        for (boolean createIncomplete : new boolean[] { true, false })
1277 +        for (boolean fFirst : new boolean[] { true, false })
1278 +        for (Integer v1 : new Integer[] { 1, null })
1279 +    {
1280 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1281 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1282 +        final CFException ex = new CFException();
1283 +        final SubtractFunction r = new SubtractFunction();
1284 +
1285 +        (fFirst ? f : g).complete(v1);
1286 +        if (!createIncomplete)
1287 +            (!fFirst ? f : g).completeExceptionally(ex);
1288 +        final CompletableFuture<Integer> h = m.thenCombine(f, g, r);
1289 +        if (createIncomplete) {
1290 +            checkIncomplete(h);
1291 +            (!fFirst ? f : g).completeExceptionally(ex);
1292 +        }
1293 +
1294 +        checkCompletedWithWrappedCFException(h, ex);
1295 +        assertEquals(0, r.invocationCount);
1296 +        checkCompletedNormally(fFirst ? f : g, v1);
1297 +        checkCompletedWithWrappedCFException(!fFirst ? f : g, ex);
1298 +    }}
1299 +
1300 +    /**
1301 +     * thenCombine result completes exceptionally if action does
1302 +     */
1303 +    public void testThenCombine_actionFailed() {
1304 +        for (ExecutionMode m : ExecutionMode.values())
1305 +        for (boolean fFirst : new boolean[] { true, false })
1306 +        for (Integer v1 : new Integer[] { 1, null })
1307 +        for (Integer v2 : new Integer[] { 2, null })
1308 +    {
1309 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1310 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1311 +        final FailingBiFunction r = new FailingBiFunction();
1312 +        final CompletableFuture<Integer> h = m.thenCombine(f, g, r);
1313 +
1314 +        if (fFirst) {
1315 +            f.complete(v1);
1316 +            g.complete(v2);
1317 +        } else {
1318 +            g.complete(v2);
1319 +            f.complete(v1);
1320 +        }
1321 +
1322 +        checkCompletedWithWrappedCFException(h);
1323 +        checkCompletedNormally(f, v1);
1324 +        checkCompletedNormally(g, v2);
1325 +    }}
1326 +
1327 +    /**
1328 +     * thenCombine result completes exceptionally if either source cancelled
1329 +     */
1330 +    public void testThenCombine_sourceCancelled() {
1331 +        for (ExecutionMode m : ExecutionMode.values())
1332 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1333 +        for (boolean createIncomplete : new boolean[] { true, false })
1334 +        for (boolean fFirst : new boolean[] { true, false })
1335 +        for (Integer v1 : new Integer[] { 1, null })
1336 +    {
1337 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1338 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1339 +        final SubtractFunction r = new SubtractFunction();
1340 +
1341 +        (fFirst ? f : g).complete(v1);
1342 +        if (!createIncomplete)
1343 +            assertTrue((!fFirst ? f : g).cancel(mayInterruptIfRunning));
1344 +        final CompletableFuture<Integer> h = m.thenCombine(f, g, r);
1345 +        if (createIncomplete) {
1346 +            checkIncomplete(h);
1347 +            assertTrue((!fFirst ? f : g).cancel(mayInterruptIfRunning));
1348 +        }
1349 +
1350 +        checkCompletedWithWrappedCancellationException(h);
1351 +        checkCancelled(!fFirst ? f : g);
1352 +        assertEquals(0, r.invocationCount);
1353 +        checkCompletedNormally(fFirst ? f : g, v1);
1354 +    }}
1355 +
1356 +    /**
1357 +     * thenAcceptBoth result completes normally after normal
1358 +     * completion of sources
1359 +     */
1360 +    public void testThenAcceptBoth_normalCompletion() {
1361 +        for (ExecutionMode m : ExecutionMode.values())
1362 +        for (boolean createIncomplete : new boolean[] { true, false })
1363 +        for (boolean fFirst : new boolean[] { true, false })
1364 +        for (Integer v1 : new Integer[] { 1, null })
1365 +        for (Integer v2 : new Integer[] { 2, null })
1366 +    {
1367 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1368 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1369 +        final SubtractAction r = new SubtractAction();
1370 +
1371 +        if (fFirst) f.complete(v1); else g.complete(v2);
1372 +        if (!createIncomplete)
1373 +            if (!fFirst) f.complete(v1); else g.complete(v2);
1374 +        final CompletableFuture<Void> h = m.thenAcceptBoth(f, g, r);
1375 +        if (createIncomplete) {
1376 +            checkIncomplete(h);
1377 +            assertEquals(0, r.invocationCount);
1378 +            if (!fFirst) f.complete(v1); else g.complete(v2);
1379 +        }
1380 +
1381 +        checkCompletedNormally(h, null);
1382 +        assertEquals(subtract(v1, v2), r.value);
1383 +        checkCompletedNormally(f, v1);
1384 +        checkCompletedNormally(g, v2);
1385 +    }}
1386 +
1387 +    /**
1388 +     * thenAcceptBoth result completes exceptionally after exceptional
1389 +     * completion of either source
1390 +     */
1391 +    public void testThenAcceptBoth_exceptionalCompletion() {
1392 +        for (ExecutionMode m : ExecutionMode.values())
1393 +        for (boolean createIncomplete : new boolean[] { true, false })
1394 +        for (boolean fFirst : new boolean[] { true, false })
1395 +        for (Integer v1 : new Integer[] { 1, null })
1396 +    {
1397 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1398 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1399 +        final CFException ex = new CFException();
1400 +        final SubtractAction r = new SubtractAction();
1401 +
1402 +        (fFirst ? f : g).complete(v1);
1403 +        if (!createIncomplete)
1404 +            (!fFirst ? f : g).completeExceptionally(ex);
1405 +        final CompletableFuture<Void> h = m.thenAcceptBoth(f, g, r);
1406 +        if (createIncomplete) {
1407 +            checkIncomplete(h);
1408 +            (!fFirst ? f : g).completeExceptionally(ex);
1409 +        }
1410 +
1411 +        checkCompletedWithWrappedCFException(h, ex);
1412 +        assertEquals(0, r.invocationCount);
1413 +        checkCompletedNormally(fFirst ? f : g, v1);
1414 +        checkCompletedWithWrappedCFException(!fFirst ? f : g, ex);
1415 +    }}
1416 +
1417 +    /**
1418 +     * thenAcceptBoth result completes exceptionally if action does
1419 +     */
1420 +    public void testThenAcceptBoth_actionFailed() {
1421 +        for (ExecutionMode m : ExecutionMode.values())
1422 +        for (boolean fFirst : new boolean[] { true, false })
1423 +        for (Integer v1 : new Integer[] { 1, null })
1424 +        for (Integer v2 : new Integer[] { 2, null })
1425 +    {
1426 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1427 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1428 +        final FailingBiConsumer r = new FailingBiConsumer();
1429 +        final CompletableFuture<Void> h = m.thenAcceptBoth(f, g, r);
1430 +
1431 +        if (fFirst) {
1432 +            f.complete(v1);
1433 +            g.complete(v2);
1434 +        } else {
1435 +            g.complete(v2);
1436 +            f.complete(v1);
1437 +        }
1438 +
1439 +        checkCompletedWithWrappedCFException(h);
1440 +        checkCompletedNormally(f, v1);
1441 +        checkCompletedNormally(g, v2);
1442 +    }}
1443 +
1444 +    /**
1445 +     * thenAcceptBoth result completes exceptionally if either source cancelled
1446 +     */
1447 +    public void testThenAcceptBoth_sourceCancelled() {
1448 +        for (ExecutionMode m : ExecutionMode.values())
1449 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1450 +        for (boolean createIncomplete : new boolean[] { true, false })
1451 +        for (boolean fFirst : new boolean[] { true, false })
1452 +        for (Integer v1 : new Integer[] { 1, null })
1453 +    {
1454 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1455 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1456 +        final SubtractAction r = new SubtractAction();
1457 +
1458 +        (fFirst ? f : g).complete(v1);
1459 +        if (!createIncomplete)
1460 +            assertTrue((!fFirst ? f : g).cancel(mayInterruptIfRunning));
1461 +        final CompletableFuture<Void> h = m.thenAcceptBoth(f, g, r);
1462 +        if (createIncomplete) {
1463 +            checkIncomplete(h);
1464 +            assertTrue((!fFirst ? f : g).cancel(mayInterruptIfRunning));
1465 +        }
1466 +
1467 +        checkCompletedWithWrappedCancellationException(h);
1468 +        checkCancelled(!fFirst ? f : g);
1469 +        assertEquals(0, r.invocationCount);
1470 +        checkCompletedNormally(fFirst ? f : g, v1);
1471 +    }}
1472 +
1473 +    /**
1474 +     * runAfterBoth result completes normally after normal
1475 +     * completion of sources
1476 +     */
1477 +    public void testRunAfterBoth_normalCompletion() {
1478 +        for (ExecutionMode m : ExecutionMode.values())
1479 +        for (boolean createIncomplete : new boolean[] { true, false })
1480 +        for (boolean fFirst : new boolean[] { true, false })
1481 +        for (Integer v1 : new Integer[] { 1, null })
1482 +        for (Integer v2 : new Integer[] { 2, null })
1483 +    {
1484 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1485 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1486 +        final Noop r = new Noop();
1487 +
1488 +        if (fFirst) f.complete(v1); else g.complete(v2);
1489 +        if (!createIncomplete)
1490 +            if (!fFirst) f.complete(v1); else g.complete(v2);
1491 +        final CompletableFuture<Void> h = m.runAfterBoth(f, g, r);
1492 +        if (createIncomplete) {
1493 +            checkIncomplete(h);
1494 +            assertEquals(0, r.invocationCount);
1495 +            if (!fFirst) f.complete(v1); else g.complete(v2);
1496 +        }
1497 +
1498 +        checkCompletedNormally(h, null);
1499 +        assertEquals(1, r.invocationCount);
1500 +        checkCompletedNormally(f, v1);
1501 +        checkCompletedNormally(g, v2);
1502 +    }}
1503 +
1504 +    /**
1505 +     * runAfterBoth result completes exceptionally after exceptional
1506 +     * completion of either source
1507 +     */
1508 +    public void testRunAfterBoth_exceptionalCompletion() {
1509 +        for (ExecutionMode m : ExecutionMode.values())
1510 +        for (boolean createIncomplete : new boolean[] { true, false })
1511 +        for (boolean fFirst : new boolean[] { true, false })
1512 +        for (Integer v1 : new Integer[] { 1, null })
1513 +    {
1514 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1515 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1516 +        final CFException ex = new CFException();
1517 +        final Noop r = new Noop();
1518 +
1519 +        (fFirst ? f : g).complete(v1);
1520 +        if (!createIncomplete)
1521 +            (!fFirst ? f : g).completeExceptionally(ex);
1522 +        final CompletableFuture<Void> h = m.runAfterBoth(f, g, r);
1523 +        if (createIncomplete) {
1524 +            checkIncomplete(h);
1525 +            (!fFirst ? f : g).completeExceptionally(ex);
1526 +        }
1527 +
1528 +        checkCompletedWithWrappedCFException(h, ex);
1529 +        assertEquals(0, r.invocationCount);
1530 +        checkCompletedNormally(fFirst ? f : g, v1);
1531 +        checkCompletedWithWrappedCFException(!fFirst ? f : g, ex);
1532 +    }}
1533 +
1534 +    /**
1535 +     * runAfterBoth result completes exceptionally if action does
1536 +     */
1537 +    public void testRunAfterBoth_actionFailed() {
1538 +        for (ExecutionMode m : ExecutionMode.values())
1539 +        for (boolean fFirst : new boolean[] { true, false })
1540 +        for (Integer v1 : new Integer[] { 1, null })
1541 +        for (Integer v2 : new Integer[] { 2, null })
1542 +    {
1543 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1544 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1545 +        final FailingRunnable r = new FailingRunnable();
1546 +
1547 +        CompletableFuture<Void> h1 = m.runAfterBoth(f, g, r);
1548 +        if (fFirst) {
1549 +            f.complete(v1);
1550 +            g.complete(v2);
1551 +        } else {
1552 +            g.complete(v2);
1553 +            f.complete(v1);
1554 +        }
1555 +        CompletableFuture<Void> h2 = m.runAfterBoth(f, g, r);
1556 +
1557 +        checkCompletedWithWrappedCFException(h1);
1558 +        checkCompletedWithWrappedCFException(h2);
1559 +        checkCompletedNormally(f, v1);
1560 +        checkCompletedNormally(g, v2);
1561 +    }}
1562 +
1563 +    /**
1564 +     * runAfterBoth result completes exceptionally if either source cancelled
1565 +     */
1566 +    public void testRunAfterBoth_sourceCancelled() {
1567 +        for (ExecutionMode m : ExecutionMode.values())
1568 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1569 +        for (boolean createIncomplete : new boolean[] { true, false })
1570 +        for (boolean fFirst : new boolean[] { true, false })
1571 +        for (Integer v1 : new Integer[] { 1, null })
1572 +    {
1573 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1574 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1575 +        final Noop r = new Noop();
1576 +
1577 +
1578 +        (fFirst ? f : g).complete(v1);
1579 +        if (!createIncomplete)
1580 +            assertTrue((!fFirst ? f : g).cancel(mayInterruptIfRunning));
1581 +        final CompletableFuture<Void> h = m.runAfterBoth(f, g, r);
1582 +        if (createIncomplete) {
1583 +            checkIncomplete(h);
1584 +            assertTrue((!fFirst ? f : g).cancel(mayInterruptIfRunning));
1585 +        }
1586 +
1587 +        checkCompletedWithWrappedCancellationException(h);
1588 +        checkCancelled(!fFirst ? f : g);
1589 +        assertEquals(0, r.invocationCount);
1590 +        checkCompletedNormally(fFirst ? f : g, v1);
1591 +    }}
1592 +
1593 +    /**
1594 +     * applyToEither result completes normally after normal completion
1595 +     * of either source
1596 +     */
1597 +    public void testApplyToEither_normalCompletion() {
1598 +        for (ExecutionMode m : ExecutionMode.values())
1599 +        for (boolean createIncomplete : new boolean[] { true, false })
1600 +        for (boolean fFirst : new boolean[] { true, false })
1601 +        for (Integer v1 : new Integer[] { 1, null })
1602 +        for (Integer v2 : new Integer[] { 2, null })
1603 +    {
1604 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1605 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1606 +        final IncFunction r = new IncFunction();
1607 +
1608 +        if (!createIncomplete)
1609 +            if (fFirst) f.complete(v1); else g.complete(v2);
1610 +        final CompletableFuture<Integer> h = m.applyToEither(f, g, r);
1611 +        if (createIncomplete) {
1612 +            checkIncomplete(h);
1613 +            assertEquals(0, r.invocationCount);
1614 +            if (fFirst) f.complete(v1); else g.complete(v2);
1615 +        }
1616 +        checkCompletedNormally(h, inc(fFirst ? v1 : v2));
1617 +        if (!fFirst) f.complete(v1); else g.complete(v2);
1618 +
1619 +        checkCompletedNormally(f, v1);
1620 +        checkCompletedNormally(g, v2);
1621 +        checkCompletedNormally(h, inc(fFirst ? v1 : v2));
1622 +    }}
1623 +
1624 +    public void testApplyToEither_normalCompletionBothAvailable() {
1625 +        for (ExecutionMode m : ExecutionMode.values())
1626 +        for (boolean fFirst : new boolean[] { true, false })
1627 +        for (Integer v1 : new Integer[] { 1, null })
1628 +        for (Integer v2 : new Integer[] { 2, null })
1629 +    {
1630 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1631 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1632 +        final IncFunction r = new IncFunction();
1633 +
1634 +        if (fFirst) {
1635 +            f.complete(v1);
1636 +            g.complete(v2);
1637 +        } else {
1638 +            g.complete(v2);
1639 +            f.complete(v1);
1640 +        }
1641 +
1642 +        final CompletableFuture<Integer> h = m.applyToEither(f, g, r);
1643 +
1644 +        checkCompletedNormally(f, v1);
1645 +        checkCompletedNormally(g, v2);
1646 +
1647 +        // unspecified behavior
1648 +        assertTrue(Objects.equals(h.join(), inc(v1)) ||
1649 +                   Objects.equals(h.join(), inc(v2)));
1650 +        assertEquals(1, r.invocationCount);
1651 +    }}
1652 +
1653 +    /**
1654 +     * applyToEither result completes exceptionally after exceptional
1655 +     * completion of either source
1656 +     */
1657 +    public void testApplyToEither_exceptionalCompletion1() {
1658 +        for (ExecutionMode m : ExecutionMode.values())
1659 +        for (boolean createIncomplete : new boolean[] { true, false })
1660 +        for (boolean fFirst : 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 CFException ex = new CFException();
1666 +        final IncFunction r = new IncFunction();
1667 +
1668 +        if (!createIncomplete) (fFirst ? f : g).completeExceptionally(ex);
1669 +        final CompletableFuture<Integer> h = m.applyToEither(f, g, r);
1670 +        if (createIncomplete) {
1671 +            checkIncomplete(h);
1672 +            assertEquals(0, r.invocationCount);
1673 +            (fFirst ? f : g).completeExceptionally(ex);
1674 +        }
1675 +
1676 +        checkCompletedWithWrappedCFException(h, ex);
1677 +        (!fFirst ? f : g).complete(v1);
1678 +
1679 +        assertEquals(0, r.invocationCount);
1680 +        checkCompletedNormally(!fFirst ? f : g, v1);
1681 +        checkCompletedWithWrappedCFException(fFirst ? f : g, ex);
1682 +        checkCompletedWithWrappedCFException(h, ex);
1683 +    }}
1684 +
1685 +    public void testApplyToEither_exceptionalCompletion2() {
1686 +        for (ExecutionMode m : ExecutionMode.values())
1687 +        for (boolean reverseArgs : new boolean[] { true, false })
1688 +        for (boolean fFirst : new boolean[] { true, false })
1689 +        for (Integer v1 : new Integer[] { 1, null })
1690 +    {
1691 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1692 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1693 +        final IncFunction r1 = new IncFunction();
1694 +        final IncFunction r2 = new IncFunction();
1695 +        final CFException ex = new CFException();
1696 +        final CompletableFuture<Integer> j = (reverseArgs ? g : f);
1697 +        final CompletableFuture<Integer> k = (reverseArgs ? f : g);
1698 +        final CompletableFuture<Integer> h1 = m.applyToEither(j, k, r1);
1699 +        if (fFirst) {
1700 +            f.complete(v1);
1701 +            g.completeExceptionally(ex);
1702 +        } else {
1703 +            g.completeExceptionally(ex);
1704 +            f.complete(v1);
1705 +        }
1706 +        final CompletableFuture<Integer> h2 = m.applyToEither(j, k, r2);
1707 +
1708 +        // unspecified behavior
1709 +        try {
1710 +            assertEquals(inc(v1), h1.join());
1711 +            assertEquals(1, r1.invocationCount);
1712 +        } catch (CompletionException ok) {
1713 +            checkCompletedWithWrappedCFException(h1, ex);
1714 +            assertEquals(0, r1.invocationCount);
1715 +        }
1716 +
1717 +        try {
1718 +            assertEquals(inc(v1), h2.join());
1719 +            assertEquals(1, r2.invocationCount);
1720 +        } catch (CompletionException ok) {
1721 +            checkCompletedWithWrappedCFException(h2, ex);
1722 +            assertEquals(0, r2.invocationCount);
1723 +        }
1724 +
1725 +        checkCompletedWithWrappedCFException(g, ex);
1726 +        checkCompletedNormally(f, v1);
1727 +    }}
1728 +
1729 +    /**
1730 +     * applyToEither result completes exceptionally if action does
1731 +     */
1732 +    public void testApplyToEither_actionFailed1() {
1733 +        for (ExecutionMode m : ExecutionMode.values())
1734 +        for (Integer v1 : new Integer[] { 1, null })
1735 +        for (Integer v2 : new Integer[] { 2, null })
1736 +    {
1737 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1738 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1739 +        final FailingFunction r = new FailingFunction();
1740 +        final CompletableFuture<Integer> h = m.applyToEither(f, g, r);
1741 +
1742 +        f.complete(v1);
1743 +        checkCompletedWithWrappedCFException(h);
1744 +        g.complete(v2);
1745 +        checkCompletedNormally(f, v1);
1746 +        checkCompletedNormally(g, v2);
1747 +    }}
1748 +
1749 +    public void testApplyToEither_actionFailed2() {
1750 +        for (ExecutionMode m : ExecutionMode.values())
1751 +        for (Integer v1 : new Integer[] { 1, null })
1752 +        for (Integer v2 : new Integer[] { 2, null })
1753 +    {
1754 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1755 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1756 +        final FailingFunction r = new FailingFunction();
1757 +        final CompletableFuture<Integer> h = m.applyToEither(f, g, r);
1758 +
1759 +        g.complete(v2);
1760 +        checkCompletedWithWrappedCFException(h);
1761 +        f.complete(v1);
1762 +        checkCompletedNormally(f, v1);
1763 +        checkCompletedNormally(g, v2);
1764 +    }}
1765 +
1766 +    /**
1767 +     * applyToEither result completes exceptionally if either source cancelled
1768 +     */
1769 +    public void testApplyToEither_sourceCancelled1() {
1770 +        for (ExecutionMode m : ExecutionMode.values())
1771 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1772 +        for (boolean createIncomplete : new boolean[] { true, false })
1773 +        for (boolean fFirst : new boolean[] { true, false })
1774 +        for (Integer v1 : new Integer[] { 1, null })
1775 +    {
1776 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1777 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1778 +        final IncFunction r = new IncFunction();
1779 +
1780 +        if (!createIncomplete) assertTrue((fFirst ? f : g).cancel(mayInterruptIfRunning));
1781 +        final CompletableFuture<Integer> h = m.applyToEither(f, g, r);
1782 +        if (createIncomplete) {
1783 +            checkIncomplete(h);
1784 +            assertEquals(0, r.invocationCount);
1785 +            assertTrue((fFirst ? f : g).cancel(mayInterruptIfRunning));
1786 +        }
1787 +
1788 +        checkCompletedWithWrappedCancellationException(h);
1789 +        (!fFirst ? f : g).complete(v1);
1790 +
1791 +        assertEquals(0, r.invocationCount);
1792 +        checkCompletedNormally(!fFirst ? f : g, v1);
1793 +        checkCancelled(fFirst ? f : g);
1794 +        checkCompletedWithWrappedCancellationException(h);
1795 +    }}
1796 +
1797 +    public void testApplyToEither_sourceCancelled2() {
1798 +        for (ExecutionMode m : ExecutionMode.values())
1799 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1800 +        for (boolean reverseArgs : new boolean[] { true, false })
1801 +        for (boolean fFirst : new boolean[] { true, false })
1802 +        for (Integer v1 : new Integer[] { 1, null })
1803 +    {
1804 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1805 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1806 +        final IncFunction r1 = new IncFunction();
1807 +        final IncFunction r2 = new IncFunction();
1808 +        final CFException ex = new CFException();
1809 +        final CompletableFuture<Integer> j = (reverseArgs ? g : f);
1810 +        final CompletableFuture<Integer> k = (reverseArgs ? f : g);
1811 +
1812 +        final CompletableFuture<Integer> h1 = m.applyToEither(j, k, r1);
1813 +        if (fFirst) {
1814 +            f.complete(v1);
1815 +            assertTrue(g.cancel(mayInterruptIfRunning));
1816 +        } else {
1817 +            assertTrue(g.cancel(mayInterruptIfRunning));
1818 +            f.complete(v1);
1819 +        }
1820 +        final CompletableFuture<Integer> h2 = m.applyToEither(j, k, r2);
1821 +
1822 +        // unspecified behavior
1823 +        try {
1824 +            assertEquals(inc(v1), h1.join());
1825 +            assertEquals(1, r1.invocationCount);
1826 +        } catch (CompletionException ok) {
1827 +            checkCompletedWithWrappedCancellationException(h1);
1828 +            assertEquals(0, r1.invocationCount);
1829 +        }
1830 +
1831 +        try {
1832 +            assertEquals(inc(v1), h2.join());
1833 +            assertEquals(1, r2.invocationCount);
1834 +        } catch (CompletionException ok) {
1835 +            checkCompletedWithWrappedCancellationException(h2);
1836 +            assertEquals(0, r2.invocationCount);
1837 +        }
1838 +
1839 +        checkCancelled(g);
1840 +        checkCompletedNormally(f, v1);
1841 +    }}
1842 +
1843 +    /**
1844 +     * acceptEither result completes normally after normal completion
1845 +     * of either source
1846 +     */
1847 +    public void testAcceptEither_normalCompletion1() {
1848 +        for (ExecutionMode m : ExecutionMode.values())
1849 +        for (Integer v1 : new Integer[] { 1, null })
1850 +        for (Integer v2 : new Integer[] { 2, null })
1851 +    {
1852 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1853 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1854 +        final IncAction r = new IncAction();
1855 +        final CompletableFuture<Void> h = m.acceptEither(f, g, r);
1856 +
1857 +        f.complete(v1);
1858 +        checkCompletedNormally(h, null);
1859 +        assertEquals(inc(v1), r.value);
1860 +        g.complete(v2);
1861 +
1862 +        checkCompletedNormally(f, v1);
1863 +        checkCompletedNormally(g, v2);
1864 +        checkCompletedNormally(h, null);
1865 +    }}
1866 +
1867 +    public void testAcceptEither_normalCompletion2() {
1868 +        for (ExecutionMode m : ExecutionMode.values())
1869 +        for (Integer v1 : new Integer[] { 1, null })
1870 +        for (Integer v2 : new Integer[] { 2, null })
1871 +    {
1872 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1873 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1874 +        final IncAction r = new IncAction();
1875 +        final CompletableFuture<Void> h = m.acceptEither(f, g, r);
1876 +
1877 +        g.complete(v2);
1878 +        checkCompletedNormally(h, null);
1879 +        assertEquals(inc(v2), r.value);
1880 +        f.complete(v1);
1881 +
1882 +        checkCompletedNormally(f, v1);
1883 +        checkCompletedNormally(g, v2);
1884 +        checkCompletedNormally(h, null);
1885 +    }}
1886 +
1887 +    public void testAcceptEither_normalCompletion3() {
1888 +        for (ExecutionMode m : ExecutionMode.values())
1889 +        for (Integer v1 : new Integer[] { 1, null })
1890 +        for (Integer v2 : new Integer[] { 2, null })
1891 +    {
1892 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1893 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1894 +        final IncAction r = new IncAction();
1895 +
1896 +        f.complete(v1);
1897 +        g.complete(v2);
1898 +        final CompletableFuture<Void> h = m.acceptEither(f, g, r);
1899 +
1900 +        checkCompletedNormally(h, null);
1901 +        checkCompletedNormally(f, v1);
1902 +        checkCompletedNormally(g, v2);
1903 +
1904 +        // unspecified behavior
1905 +        assertTrue(Objects.equals(r.value, inc(v1)) ||
1906 +                   Objects.equals(r.value, inc(v2)));
1907 +    }}
1908 +
1909 +    /**
1910 +     * acceptEither result completes exceptionally after exceptional
1911 +     * completion of either source
1912 +     */
1913 +    public void testAcceptEither_exceptionalCompletion1() {
1914 +        for (ExecutionMode m : ExecutionMode.values())
1915 +        for (Integer v1 : new Integer[] { 1, null })
1916 +    {
1917 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1918 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1919 +        final IncAction r = new IncAction();
1920 +        final CompletableFuture<Void> h = m.acceptEither(f, g, r);
1921 +        final CFException ex = new CFException();
1922 +
1923 +        f.completeExceptionally(ex);
1924 +        checkCompletedWithWrappedCFException(h, ex);
1925 +        g.complete(v1);
1926 +
1927 +        assertEquals(0, r.invocationCount);
1928 +        checkCompletedNormally(g, v1);
1929 +        checkCompletedWithWrappedCFException(f, ex);
1930 +        checkCompletedWithWrappedCFException(h, ex);
1931 +    }}
1932 +
1933 +    public void testAcceptEither_exceptionalCompletion2() {
1934 +        for (ExecutionMode m : ExecutionMode.values())
1935 +        for (Integer v1 : new Integer[] { 1, null })
1936 +    {
1937 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1938 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1939 +        final IncAction r = new IncAction();
1940 +        final CompletableFuture<Void> h = m.acceptEither(f, g, r);
1941 +        final CFException ex = new CFException();
1942 +
1943 +        g.completeExceptionally(ex);
1944 +        checkCompletedWithWrappedCFException(h, ex);
1945 +        f.complete(v1);
1946 +
1947 +        assertEquals(0, r.invocationCount);
1948 +        checkCompletedNormally(f, v1);
1949 +        checkCompletedWithWrappedCFException(g, ex);
1950 +        checkCompletedWithWrappedCFException(h, ex);
1951 +    }}
1952 +
1953 +    public void testAcceptEither_exceptionalCompletion3() {
1954 +        for (ExecutionMode m : ExecutionMode.values())
1955 +        for (Integer v1 : new Integer[] { 1, null })
1956 +    {
1957 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1958 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1959 +        final IncAction r = new IncAction();
1960 +        final CFException ex = new CFException();
1961 +
1962 +        g.completeExceptionally(ex);
1963 +        f.complete(v1);
1964 +        final CompletableFuture<Void> h = m.acceptEither(f, g, r);
1965 +
1966 +        // unspecified behavior
1967 +        Integer v;
1968 +        try {
1969 +            assertNull(h.join());
1970 +            assertEquals(1, r.invocationCount);
1971 +            assertEquals(inc(v1), r.value);
1972 +        } catch (CompletionException ok) {
1973 +            checkCompletedWithWrappedCFException(h, ex);
1974 +            assertEquals(0, r.invocationCount);
1975 +        }
1976 +
1977 +        checkCompletedWithWrappedCFException(g, ex);
1978 +        checkCompletedNormally(f, v1);
1979 +    }}
1980 +
1981 +    public void testAcceptEither_exceptionalCompletion4() {
1982 +        for (ExecutionMode m : ExecutionMode.values())
1983 +        for (Integer v1 : new Integer[] { 1, null })
1984 +    {
1985 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1986 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1987 +        final IncAction r = new IncAction();
1988 +        final CFException ex = new CFException();
1989 +
1990 +        f.completeExceptionally(ex);
1991 +        g.complete(v1);
1992 +        final CompletableFuture<Void> h = m.acceptEither(f, g, r);
1993 +
1994 +        // unspecified behavior
1995 +        Integer v;
1996 +        try {
1997 +            assertNull(h.join());
1998 +            assertEquals(1, r.invocationCount);
1999 +            assertEquals(inc(v1), r.value);
2000 +        } catch (CompletionException ok) {
2001 +            checkCompletedWithWrappedCFException(h, ex);
2002 +            assertEquals(0, r.invocationCount);
2003 +        }
2004 +
2005 +        checkCompletedWithWrappedCFException(f, ex);
2006 +        checkCompletedNormally(g, v1);
2007 +    }}
2008 +
2009 +    /**
2010 +     * acceptEither result completes exceptionally if action does
2011 +     */
2012 +    public void testAcceptEither_actionFailed1() {
2013 +        for (ExecutionMode m : ExecutionMode.values())
2014 +        for (Integer v1 : new Integer[] { 1, null })
2015 +        for (Integer v2 : new Integer[] { 2, null })
2016 +    {
2017 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2018 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2019 +        final FailingConsumer r = new FailingConsumer();
2020 +        final CompletableFuture<Void> h = m.acceptEither(f, g, r);
2021 +
2022 +        f.complete(v1);
2023 +        checkCompletedWithWrappedCFException(h);
2024 +        g.complete(v2);
2025 +        checkCompletedNormally(f, v1);
2026 +        checkCompletedNormally(g, v2);
2027 +    }}
2028 +
2029 +    public void testAcceptEither_actionFailed2() {
2030 +        for (ExecutionMode m : ExecutionMode.values())
2031 +        for (Integer v1 : new Integer[] { 1, null })
2032 +        for (Integer v2 : new Integer[] { 2, null })
2033 +    {
2034 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2035 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2036 +        final FailingConsumer r = new FailingConsumer();
2037 +        final CompletableFuture<Void> h = m.acceptEither(f, g, r);
2038 +
2039 +        g.complete(v2);
2040 +        checkCompletedWithWrappedCFException(h);
2041 +        f.complete(v1);
2042 +        checkCompletedNormally(f, v1);
2043 +        checkCompletedNormally(g, v2);
2044 +    }}
2045 +
2046 +    /**
2047 +     * acceptEither result completes exceptionally if either source cancelled
2048 +     */
2049 +    public void testAcceptEither_sourceCancelled1() {
2050 +        for (ExecutionMode m : ExecutionMode.values())
2051 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2052 +        for (Integer v1 : new Integer[] { 1, null })
2053 +    {
2054 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2055 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2056 +        final IncAction r = new IncAction();
2057 +        final CompletableFuture<Void> h = m.acceptEither(f, g, r);
2058 +
2059 +        assertTrue(f.cancel(mayInterruptIfRunning));
2060 +        checkCompletedWithWrappedCancellationException(h);
2061 +        g.complete(v1);
2062 +
2063 +        checkCancelled(f);
2064 +        assertEquals(0, r.invocationCount);
2065 +        checkCompletedNormally(g, v1);
2066 +        checkCompletedWithWrappedCancellationException(h);
2067 +    }}
2068 +
2069 +    public void testAcceptEither_sourceCancelled2() {
2070 +        for (ExecutionMode m : ExecutionMode.values())
2071 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2072 +        for (Integer v1 : new Integer[] { 1, null })
2073 +    {
2074 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2075 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2076 +        final IncAction r = new IncAction();
2077 +        final CompletableFuture<Void> h = m.acceptEither(f, g, r);
2078 +
2079 +        assertTrue(g.cancel(mayInterruptIfRunning));
2080 +        checkCompletedWithWrappedCancellationException(h);
2081 +        f.complete(v1);
2082 +
2083 +        checkCancelled(g);
2084 +        assertEquals(0, r.invocationCount);
2085 +        checkCompletedNormally(f, v1);
2086 +        checkCompletedWithWrappedCancellationException(h);
2087 +    }}
2088 +
2089 +    public void testAcceptEither_sourceCancelled3() {
2090 +        for (ExecutionMode m : ExecutionMode.values())
2091 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2092 +        for (Integer v1 : new Integer[] { 1, null })
2093 +    {
2094 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2095 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2096 +        final IncAction r = new IncAction();
2097 +
2098 +        assertTrue(g.cancel(mayInterruptIfRunning));
2099 +        f.complete(v1);
2100 +        final CompletableFuture<Void> h = m.acceptEither(f, g, r);
2101 +
2102 +        // unspecified behavior
2103 +        Integer v;
2104 +        try {
2105 +            assertNull(h.join());
2106 +            assertEquals(1, r.invocationCount);
2107 +            assertEquals(inc(v1), r.value);
2108 +        } catch (CompletionException ok) {
2109 +            checkCompletedWithWrappedCancellationException(h);
2110 +            assertEquals(0, r.invocationCount);
2111 +        }
2112 +
2113 +        checkCancelled(g);
2114 +        checkCompletedNormally(f, v1);
2115 +    }}
2116 +
2117 +    public void testAcceptEither_sourceCancelled4() {
2118 +        for (ExecutionMode m : ExecutionMode.values())
2119 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2120 +        for (Integer v1 : new Integer[] { 1, null })
2121 +    {
2122 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2123 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2124 +        final IncAction r = new IncAction();
2125 +
2126 +        assertTrue(f.cancel(mayInterruptIfRunning));
2127 +        g.complete(v1);
2128 +        final CompletableFuture<Void> h = m.acceptEither(f, g, r);
2129 +
2130 +        // unspecified behavior
2131 +        Integer v;
2132 +        try {
2133 +            assertNull(h.join());
2134 +            assertEquals(1, r.invocationCount);
2135 +            assertEquals(inc(v1), r.value);
2136 +        } catch (CompletionException ok) {
2137 +            checkCompletedWithWrappedCancellationException(h);
2138 +            assertEquals(0, r.invocationCount);
2139 +        }
2140 +
2141 +        checkCancelled(f);
2142 +        checkCompletedNormally(g, v1);
2143 +    }}
2144 +
2145 +    /**
2146 +     * runAfterEither result completes normally after normal completion
2147 +     * of either source
2148 +     */
2149 +    public void testRunAfterEither_normalCompletion1() {
2150 +        for (ExecutionMode m : ExecutionMode.values())
2151 +        for (Integer v1 : new Integer[] { 1, null })
2152 +        for (Integer v2 : new Integer[] { 2, null })
2153 +    {
2154 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2155 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2156 +        final Noop r = new Noop();
2157 +        final CompletableFuture<Void> h = m.runAfterEither(f, g, r);
2158 +
2159 +        f.complete(v1);
2160 +        checkCompletedNormally(h, null);
2161 +        assertEquals(1, r.invocationCount);
2162 +        g.complete(v2);
2163 +
2164 +        checkCompletedNormally(f, v1);
2165 +        checkCompletedNormally(g, v2);
2166 +        checkCompletedNormally(h, null);
2167 +        assertEquals(1, r.invocationCount);
2168 +    }}
2169 +
2170 +    public void testRunAfterEither_normalCompletion2() {
2171 +        for (ExecutionMode m : ExecutionMode.values())
2172 +        for (Integer v1 : new Integer[] { 1, null })
2173 +        for (Integer v2 : new Integer[] { 2, null })
2174 +    {
2175 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2176 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2177 +        final Noop r = new Noop();
2178 +        final CompletableFuture<Void> h = m.runAfterEither(f, g, r);
2179 +
2180 +        g.complete(v2);
2181 +        checkCompletedNormally(h, null);
2182 +        assertEquals(1, r.invocationCount);
2183 +        f.complete(v1);
2184 +
2185 +        checkCompletedNormally(f, v1);
2186 +        checkCompletedNormally(g, v2);
2187 +        checkCompletedNormally(h, null);
2188 +        assertEquals(1, r.invocationCount);
2189 +        }}
2190 +
2191 +    public void testRunAfterEither_normalCompletion3() {
2192 +        for (ExecutionMode m : ExecutionMode.values())
2193 +        for (Integer v1 : new Integer[] { 1, null })
2194 +        for (Integer v2 : new Integer[] { 2, null })
2195 +    {
2196 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2197 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2198 +        final Noop r = new Noop();
2199 +
2200 +        f.complete(v1);
2201 +        g.complete(v2);
2202 +        final CompletableFuture<Void> h = m.runAfterEither(f, g, r);
2203 +
2204 +        checkCompletedNormally(h, null);
2205 +        checkCompletedNormally(f, v1);
2206 +        checkCompletedNormally(g, v2);
2207 +        assertEquals(1, r.invocationCount);
2208 +    }}
2209 +
2210 +    /**
2211 +     * runAfterEither result completes exceptionally after exceptional
2212 +     * completion of either source
2213 +     */
2214 +    public void testRunAfterEither_exceptionalCompletion1() {
2215 +        for (ExecutionMode m : ExecutionMode.values())
2216 +        for (Integer v1 : new Integer[] { 1, null })
2217 +    {
2218 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2219 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2220 +        final Noop r = new Noop();
2221 +        final CompletableFuture<Void> h = m.runAfterEither(f, g, r);
2222 +        final CFException ex = new CFException();
2223 +
2224 +        f.completeExceptionally(ex);
2225 +        checkCompletedWithWrappedCFException(h, ex);
2226 +        g.complete(v1);
2227 +
2228 +        assertEquals(0, r.invocationCount);
2229 +        checkCompletedNormally(g, v1);
2230 +        checkCompletedWithWrappedCFException(f, ex);
2231 +        checkCompletedWithWrappedCFException(h, ex);
2232 +    }}
2233 +
2234 +    public void testRunAfterEither_exceptionalCompletion2() {
2235 +        for (ExecutionMode m : ExecutionMode.values())
2236 +        for (Integer v1 : new Integer[] { 1, null })
2237 +    {
2238 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2239 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2240 +        final Noop r = new Noop();
2241 +        final CompletableFuture<Void> h = m.runAfterEither(f, g, r);
2242 +        final CFException ex = new CFException();
2243 +
2244 +        g.completeExceptionally(ex);
2245 +        checkCompletedWithWrappedCFException(h, ex);
2246 +        f.complete(v1);
2247 +
2248 +        assertEquals(0, r.invocationCount);
2249 +        checkCompletedNormally(f, v1);
2250 +        checkCompletedWithWrappedCFException(g, ex);
2251 +        checkCompletedWithWrappedCFException(h, ex);
2252 +    }}
2253 +
2254 +    public void testRunAfterEither_exceptionalCompletion3() {
2255 +        for (ExecutionMode m : ExecutionMode.values())
2256 +        for (Integer v1 : new Integer[] { 1, null })
2257 +    {
2258 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2259 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2260 +        final Noop r = new Noop();
2261 +        final CFException ex = new CFException();
2262 +
2263 +        g.completeExceptionally(ex);
2264 +        f.complete(v1);
2265 +        final CompletableFuture<Void> h = m.runAfterEither(f, g, r);
2266 +
2267 +        // unspecified behavior
2268 +        Integer v;
2269 +        try {
2270 +            assertNull(h.join());
2271 +            assertEquals(1, r.invocationCount);
2272 +        } catch (CompletionException ok) {
2273 +            checkCompletedWithWrappedCFException(h, ex);
2274 +            assertEquals(0, r.invocationCount);
2275 +        }
2276 +
2277 +        checkCompletedWithWrappedCFException(g, ex);
2278 +        checkCompletedNormally(f, v1);
2279 +    }}
2280 +
2281 +    public void testRunAfterEither_exceptionalCompletion4() {
2282 +        for (ExecutionMode m : ExecutionMode.values())
2283 +        for (Integer v1 : new Integer[] { 1, null })
2284 +    {
2285 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2286 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2287 +        final Noop r = new Noop();
2288 +        final CFException ex = new CFException();
2289 +
2290 +        f.completeExceptionally(ex);
2291 +        g.complete(v1);
2292 +        final CompletableFuture<Void> h = m.runAfterEither(f, g, r);
2293 +
2294 +        // unspecified behavior
2295 +        Integer v;
2296 +        try {
2297 +            assertNull(h.join());
2298 +            assertEquals(1, r.invocationCount);
2299 +        } catch (CompletionException ok) {
2300 +            checkCompletedWithWrappedCFException(h, ex);
2301 +            assertEquals(0, r.invocationCount);
2302 +        }
2303 +
2304 +        checkCompletedWithWrappedCFException(f, ex);
2305 +        checkCompletedNormally(g, v1);
2306 +    }}
2307 +
2308 +    /**
2309 +     * runAfterEither result completes exceptionally if action does
2310 +     */
2311 +    public void testRunAfterEither_actionFailed1() {
2312 +        for (ExecutionMode m : ExecutionMode.values())
2313 +        for (Integer v1 : new Integer[] { 1, null })
2314 +        for (Integer v2 : new Integer[] { 2, null })
2315 +    {
2316 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2317 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2318 +        final FailingRunnable r = new FailingRunnable();
2319 +        final CompletableFuture<Void> h = m.runAfterEither(f, g, r);
2320 +
2321 +        f.complete(v1);
2322 +        checkCompletedWithWrappedCFException(h);
2323 +        g.complete(v2);
2324 +        checkCompletedNormally(f, v1);
2325 +        checkCompletedNormally(g, v2);
2326 +    }}
2327 +
2328 +    public void testRunAfterEither_actionFailed2() {
2329 +        for (ExecutionMode m : ExecutionMode.values())
2330 +        for (Integer v1 : new Integer[] { 1, null })
2331 +        for (Integer v2 : new Integer[] { 2, null })
2332 +    {
2333 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2334 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2335 +        final FailingRunnable r = new FailingRunnable();
2336 +        final CompletableFuture<Void> h = m.runAfterEither(f, g, r);
2337 +
2338 +        g.complete(v2);
2339 +        checkCompletedWithWrappedCFException(h);
2340 +        f.complete(v1);
2341 +        checkCompletedNormally(f, v1);
2342 +        checkCompletedNormally(g, v2);
2343 +    }}
2344 +
2345 +    /**
2346 +     * runAfterEither result completes exceptionally if either source cancelled
2347 +     */
2348 +    public void testRunAfterEither_sourceCancelled1() {
2349 +        for (ExecutionMode m : ExecutionMode.values())
2350 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2351 +        for (Integer v1 : new Integer[] { 1, null })
2352 +    {
2353 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2354 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2355 +        final Noop r = new Noop();
2356 +        final CompletableFuture<Void> h = m.runAfterEither(f, g, r);
2357 +
2358 +        assertTrue(f.cancel(mayInterruptIfRunning));
2359 +        checkCompletedWithWrappedCancellationException(h);
2360 +        g.complete(v1);
2361 +
2362 +        checkCancelled(f);
2363 +        assertEquals(0, r.invocationCount);
2364 +        checkCompletedNormally(g, v1);
2365 +        checkCompletedWithWrappedCancellationException(h);
2366 +    }}
2367 +
2368 +    public void testRunAfterEither_sourceCancelled2() {
2369 +        for (ExecutionMode m : ExecutionMode.values())
2370 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2371 +        for (Integer v1 : new Integer[] { 1, null })
2372 +    {
2373 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2374 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2375 +        final Noop r = new Noop();
2376 +        final CompletableFuture<Void> h = m.runAfterEither(f, g, r);
2377 +
2378 +        assertTrue(g.cancel(mayInterruptIfRunning));
2379 +        checkCompletedWithWrappedCancellationException(h);
2380 +        f.complete(v1);
2381 +
2382 +        checkCancelled(g);
2383 +        assertEquals(0, r.invocationCount);
2384 +        checkCompletedNormally(f, v1);
2385 +        checkCompletedWithWrappedCancellationException(h);
2386 +    }}
2387 +
2388 +    public void testRunAfterEither_sourceCancelled3() {
2389 +        for (ExecutionMode m : ExecutionMode.values())
2390 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2391 +        for (Integer v1 : new Integer[] { 1, null })
2392 +    {
2393 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2394 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2395 +        final Noop r = new Noop();
2396 +
2397 +        assertTrue(g.cancel(mayInterruptIfRunning));
2398 +        f.complete(v1);
2399 +        final CompletableFuture<Void> h = m.runAfterEither(f, g, r);
2400 +
2401 +        // unspecified behavior
2402 +        Integer v;
2403 +        try {
2404 +            assertNull(h.join());
2405 +            assertEquals(1, r.invocationCount);
2406 +        } catch (CompletionException ok) {
2407 +            checkCompletedWithWrappedCancellationException(h);
2408 +            assertEquals(0, r.invocationCount);
2409 +        }
2410 +
2411 +        checkCancelled(g);
2412 +        checkCompletedNormally(f, v1);
2413 +    }}
2414 +
2415 +    public void testRunAfterEither_sourceCancelled4() {
2416 +        for (ExecutionMode m : ExecutionMode.values())
2417 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2418 +        for (Integer v1 : new Integer[] { 1, null })
2419 +    {
2420 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2421 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2422 +        final Noop r = new Noop();
2423 +
2424 +        assertTrue(f.cancel(mayInterruptIfRunning));
2425 +        g.complete(v1);
2426 +        final CompletableFuture<Void> h = m.runAfterEither(f, g, r);
2427 +
2428 +        // unspecified behavior
2429 +        Integer v;
2430 +        try {
2431 +            assertNull(h.join());
2432 +            assertEquals(1, r.invocationCount);
2433 +        } catch (CompletionException ok) {
2434 +            checkCompletedWithWrappedCancellationException(h);
2435 +            assertEquals(0, r.invocationCount);
2436 +        }
2437 +
2438 +        checkCancelled(f);
2439 +        checkCompletedNormally(g, v1);
2440 +    }}
2441 +
2442 +    /**
2443 +     * thenCompose result completes normally after normal completion of source
2444 +     */
2445 +    public void testThenCompose_normalCompletion() {
2446 +        for (ExecutionMode m : ExecutionMode.values())
2447 +        for (boolean createIncomplete : new boolean[] { true, false })
2448 +        for (Integer v1 : new Integer[] { 1, null })
2449 +    {
2450 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2451 +        final CompletableFutureInc r = new CompletableFutureInc();
2452 +        if (!createIncomplete) f.complete(v1);
2453 +        final CompletableFuture<Integer> g = f.thenCompose(r);
2454 +        if (createIncomplete) f.complete(v1);
2455 +
2456 +        checkCompletedNormally(g, inc(v1));
2457 +        checkCompletedNormally(f, v1);
2458 +        assertEquals(1, r.invocationCount);
2459 +    }}
2460 +
2461 +    /**
2462 +     * thenCompose result completes exceptionally after exceptional
2463 +     * completion of source
2464 +     */
2465 +    public void testThenCompose_exceptionalCompletion() {
2466 +        for (ExecutionMode m : ExecutionMode.values())
2467 +        for (boolean createIncomplete : new boolean[] { true, false })
2468 +    {
2469 +        final CFException ex = new CFException();
2470 +        final CompletableFutureInc r = new CompletableFutureInc();
2471 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2472 +        if (!createIncomplete) f.completeExceptionally(ex);
2473 +        final CompletableFuture<Integer> g = f.thenCompose(r);
2474 +        if (createIncomplete) f.completeExceptionally(ex);
2475 +
2476 +        checkCompletedWithWrappedCFException(g, ex);
2477 +        checkCompletedWithWrappedCFException(f, ex);
2478 +        assertEquals(0, r.invocationCount);
2479 +    }}
2480 +
2481 +    /**
2482 +     * thenCompose result completes exceptionally if action does
2483 +     */
2484 +    public void testThenCompose_actionFailed() {
2485 +        for (ExecutionMode m : ExecutionMode.values())
2486 +        for (boolean createIncomplete : new boolean[] { true, false })
2487 +        for (Integer v1 : new Integer[] { 1, null })
2488 +    {
2489 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2490 +        final FailingCompletableFutureFunction r
2491 +            = new FailingCompletableFutureFunction();
2492 +        if (!createIncomplete) f.complete(v1);
2493 +        final CompletableFuture<Integer> g = f.thenCompose(r);
2494 +        if (createIncomplete) f.complete(v1);
2495 +
2496 +        checkCompletedWithWrappedCFException(g);
2497 +        checkCompletedNormally(f, v1);
2498 +    }}
2499 +
2500 +    /**
2501 +     * thenCompose result completes exceptionally if source cancelled
2502 +     */
2503 +    public void testThenCompose_sourceCancelled() {
2504 +        for (ExecutionMode m : ExecutionMode.values())
2505 +        for (boolean createIncomplete : new boolean[] { true, false })
2506 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2507 +    {
2508 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2509 +        final CompletableFutureInc r = new CompletableFutureInc();
2510 +        if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
2511 +        final CompletableFuture<Integer> g = f.thenCompose(r);
2512 +        if (createIncomplete) {
2513 +            checkIncomplete(g);
2514 +            assertTrue(f.cancel(mayInterruptIfRunning));
2515 +        }
2516 +
2517 +        checkCompletedWithWrappedCancellationException(g);
2518 +        checkCancelled(f);
2519 +    }}
2520 +
2521 +    // other static methods
2522 +
2523 +    /**
2524 +     * allOf(no component futures) returns a future completed normally
2525 +     * with the value null
2526 +     */
2527 +    public void testAllOf_empty() throws Exception {
2528 +        CompletableFuture<Void> f = CompletableFuture.allOf();
2529 +        checkCompletedNormally(f, null);
2530 +    }
2531 +
2532 +    /**
2533 +     * allOf returns a future completed normally with the value null
2534 +     * when all components complete normally
2535 +     */
2536 +    public void testAllOf_normal() throws Exception {
2537 +        for (int k = 1; k < 20; ++k) {
2538 +            CompletableFuture<Integer>[] fs = (CompletableFuture<Integer>[]) new CompletableFuture[k];
2539 +            for (int i = 0; i < k; ++i)
2540 +                fs[i] = new CompletableFuture<>();
2541 +            CompletableFuture<Void> f = CompletableFuture.allOf(fs);
2542 +            for (int i = 0; i < k; ++i) {
2543 +                checkIncomplete(f);
2544 +                checkIncomplete(CompletableFuture.allOf(fs));
2545 +                fs[i].complete(one);
2546 +            }
2547 +            checkCompletedNormally(f, null);
2548 +            checkCompletedNormally(CompletableFuture.allOf(fs), null);
2549 +        }
2550 +    }
2551 +
2552 +    /**
2553 +     * anyOf(no component futures) returns an incomplete future
2554 +     */
2555 +    public void testAnyOf_empty() throws Exception {
2556 +        CompletableFuture<Object> f = CompletableFuture.anyOf();
2557 +        checkIncomplete(f);
2558 +    }
2559 +
2560 +    /**
2561 +     * anyOf returns a future completed normally with a value when
2562 +     * a component future does
2563 +     */
2564 +    public void testAnyOf_normal() throws Exception {
2565 +        for (int k = 0; k < 10; ++k) {
2566 +            CompletableFuture[] fs = new CompletableFuture[k];
2567 +            for (int i = 0; i < k; ++i)
2568 +                fs[i] = new CompletableFuture<>();
2569 +            CompletableFuture<Object> f = CompletableFuture.anyOf(fs);
2570 +            checkIncomplete(f);
2571 +            for (int i = 0; i < k; ++i) {
2572 +                fs[i].complete(one);
2573 +                checkCompletedNormally(f, one);
2574 +                checkCompletedNormally(CompletableFuture.anyOf(fs), one);
2575 +            }
2576 +        }
2577 +    }
2578 +
2579 +    /**
2580 +     * anyOf result completes exceptionally when any component does.
2581 +     */
2582 +    public void testAnyOf_exceptional() throws Exception {
2583 +        for (int k = 0; k < 10; ++k) {
2584 +            CompletableFuture[] fs = new CompletableFuture[k];
2585 +            for (int i = 0; i < k; ++i)
2586 +                fs[i] = new CompletableFuture<>();
2587 +            CompletableFuture<Object> f = CompletableFuture.anyOf(fs);
2588 +            checkIncomplete(f);
2589 +            for (int i = 0; i < k; ++i) {
2590 +                fs[i].completeExceptionally(new CFException());
2591 +                checkCompletedWithWrappedCFException(f);
2592 +                checkCompletedWithWrappedCFException(CompletableFuture.anyOf(fs));
2593 +            }
2594 +        }
2595 +    }
2596 +
2597 +    /**
2598 +     * Completion methods throw NullPointerException with null arguments
2599 +     */
2600 +    public void testNPE() {
2601 +        CompletableFuture<Integer> f = new CompletableFuture<>();
2602 +        CompletableFuture<Integer> g = new CompletableFuture<>();
2603 +        CompletableFuture<Integer> nullFuture = (CompletableFuture<Integer>)null;
2604 +        CompletableFuture<?> h;
2605 +        ThreadExecutor exec = new ThreadExecutor();
2606 +
2607 +        Runnable[] throwingActions = {
2608 +            () -> CompletableFuture.supplyAsync(null),
2609 +            () -> CompletableFuture.supplyAsync(null, exec),
2610 +            () -> CompletableFuture.supplyAsync(supplyOne, null),
2611 +
2612 +            () -> CompletableFuture.runAsync(null),
2613 +            () -> CompletableFuture.runAsync(null, exec),
2614 +            () -> CompletableFuture.runAsync(() -> {}, null),
2615 +
2616 +            () -> f.completeExceptionally(null),
2617 +
2618 +            () -> f.thenApply(null),
2619 +            () -> f.thenApplyAsync(null),
2620 +            () -> f.thenApplyAsync((x) -> x, null),
2621 +            () -> f.thenApplyAsync(null, exec),
2622 +
2623 +            () -> f.thenAccept(null),
2624 +            () -> f.thenAcceptAsync(null),
2625 +            () -> f.thenAcceptAsync((x) -> {} , null),
2626 +            () -> f.thenAcceptAsync(null, exec),
2627 +
2628 +            () -> f.thenRun(null),
2629 +            () -> f.thenRunAsync(null),
2630 +            () -> f.thenRunAsync(() -> {} , null),
2631 +            () -> f.thenRunAsync(null, exec),
2632 +
2633 +            () -> f.thenCombine(g, null),
2634 +            () -> f.thenCombineAsync(g, null),
2635 +            () -> f.thenCombineAsync(g, null, exec),
2636 +            () -> f.thenCombine(nullFuture, (x, y) -> x),
2637 +            () -> f.thenCombineAsync(nullFuture, (x, y) -> x),
2638 +            () -> f.thenCombineAsync(nullFuture, (x, y) -> x, exec),
2639 +            () -> f.thenCombineAsync(g, (x, y) -> x, null),
2640 +
2641 +            () -> f.thenAcceptBoth(g, null),
2642 +            () -> f.thenAcceptBothAsync(g, null),
2643 +            () -> f.thenAcceptBothAsync(g, null, exec),
2644 +            () -> f.thenAcceptBoth(nullFuture, (x, y) -> {}),
2645 +            () -> f.thenAcceptBothAsync(nullFuture, (x, y) -> {}),
2646 +            () -> f.thenAcceptBothAsync(nullFuture, (x, y) -> {}, exec),
2647 +            () -> f.thenAcceptBothAsync(g, (x, y) -> {}, null),
2648 +
2649 +            () -> f.runAfterBoth(g, null),
2650 +            () -> f.runAfterBothAsync(g, null),
2651 +            () -> f.runAfterBothAsync(g, null, exec),
2652 +            () -> f.runAfterBoth(nullFuture, () -> {}),
2653 +            () -> f.runAfterBothAsync(nullFuture, () -> {}),
2654 +            () -> f.runAfterBothAsync(nullFuture, () -> {}, exec),
2655 +            () -> f.runAfterBothAsync(g, () -> {}, null),
2656 +
2657 +            () -> f.applyToEither(g, null),
2658 +            () -> f.applyToEitherAsync(g, null),
2659 +            () -> f.applyToEitherAsync(g, null, exec),
2660 +            () -> f.applyToEither(nullFuture, (x) -> x),
2661 +            () -> f.applyToEitherAsync(nullFuture, (x) -> x),
2662 +            () -> f.applyToEitherAsync(nullFuture, (x) -> x, exec),
2663 +            () -> f.applyToEitherAsync(g, (x) -> x, null),
2664 +
2665 +            () -> f.acceptEither(g, null),
2666 +            () -> f.acceptEitherAsync(g, null),
2667 +            () -> f.acceptEitherAsync(g, null, exec),
2668 +            () -> f.acceptEither(nullFuture, (x) -> {}),
2669 +            () -> f.acceptEitherAsync(nullFuture, (x) -> {}),
2670 +            () -> f.acceptEitherAsync(nullFuture, (x) -> {}, exec),
2671 +            () -> f.acceptEitherAsync(g, (x) -> {}, null),
2672 +
2673 +            () -> f.runAfterEither(g, null),
2674 +            () -> f.runAfterEitherAsync(g, null),
2675 +            () -> f.runAfterEitherAsync(g, null, exec),
2676 +            () -> f.runAfterEither(nullFuture, () -> {}),
2677 +            () -> f.runAfterEitherAsync(nullFuture, () -> {}),
2678 +            () -> f.runAfterEitherAsync(nullFuture, () -> {}, exec),
2679 +            () -> f.runAfterEitherAsync(g, () -> {}, null),
2680 +
2681 +            () -> f.thenCompose(null),
2682 +            () -> f.thenComposeAsync(null),
2683 +            () -> f.thenComposeAsync(new CompletableFutureInc(), null),
2684 +            () -> f.thenComposeAsync(null, exec),
2685 +
2686 +            () -> f.exceptionally(null),
2687 +
2688 +            () -> f.handle(null),
2689 +
2690 +            () -> CompletableFuture.allOf((CompletableFuture<?>)null),
2691 +            () -> CompletableFuture.allOf((CompletableFuture<?>[])null),
2692 +            () -> CompletableFuture.allOf(f, null),
2693 +            () -> CompletableFuture.allOf(null, f),
2694 +
2695 +            () -> CompletableFuture.anyOf((CompletableFuture<?>)null),
2696 +            () -> CompletableFuture.anyOf((CompletableFuture<?>[])null),
2697 +            () -> CompletableFuture.anyOf(f, null),
2698 +            () -> CompletableFuture.anyOf(null, f),
2699 +
2700 +            () -> f.obtrudeException(null),
2701 +        };
2702 +
2703 +        assertThrows(NullPointerException.class, throwingActions);
2704 +        assertEquals(0, exec.count.get());
2705 +    }
2706 +
2707 +    /**
2708 +     * toCompletableFuture returns this CompletableFuture.
2709 +     */
2710 +    public void testToCompletableFuture() {
2711 +        CompletableFuture<Integer> f = new CompletableFuture<>();
2712 +        assertSame(f, f.toCompletableFuture());
2713 +    }
2714 +
2715 +    /**
2716 +     * whenComplete action executes on normal completion, propagating
2717 +     * source result.
2718 +     */
2719 +    public void testWhenComplete_normalCompletion1() {
2720 +        for (ExecutionMode m : ExecutionMode.values())
2721 +        for (boolean createIncomplete : new boolean[] { true, false })
2722 +        for (Integer v1 : new Integer[] { 1, null })
2723 +    {
2724 +        final AtomicInteger a = new AtomicInteger(0);
2725 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2726 +        if (!createIncomplete) f.complete(v1);
2727 +        final CompletableFuture<Integer> g = m.whenComplete
2728 +            (f,
2729 +             (Integer x, Throwable t) -> {
2730 +                threadAssertSame(x, v1);
2731 +                threadAssertNull(t);
2732 +                a.getAndIncrement();
2733 +            });
2734 +        if (createIncomplete) f.complete(v1);
2735 +
2736 +        checkCompletedNormally(g, v1);
2737 +        checkCompletedNormally(f, v1);
2738 +        assertEquals(1, a.get());
2739 +    }}
2740 +
2741 +    /**
2742 +     * whenComplete action executes on exceptional completion, propagating
2743 +     * source result.
2744 +     */
2745 +    public void testWhenComplete_exceptionalCompletion() {
2746 +        for (ExecutionMode m : ExecutionMode.values())
2747 +        for (boolean createIncomplete : new boolean[] { true, false })
2748 +        for (Integer v1 : new Integer[] { 1, null })
2749 +    {
2750 +        final AtomicInteger a = new AtomicInteger(0);
2751 +        final CFException ex = new CFException();
2752 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2753 +        if (!createIncomplete) f.completeExceptionally(ex);
2754 +        final CompletableFuture<Integer> g = m.whenComplete
2755 +            (f,
2756 +             (Integer x, Throwable t) -> {
2757 +                threadAssertNull(x);
2758 +                threadAssertSame(t, ex);
2759 +                a.getAndIncrement();
2760 +            });
2761 +        if (createIncomplete) f.completeExceptionally(ex);
2762 +        checkCompletedWithWrappedCFException(f, ex);
2763 +        checkCompletedWithWrappedCFException(g, ex);
2764 +        assertEquals(1, a.get());
2765 +    }}
2766 +
2767 +    /**
2768 +     * whenComplete action executes on cancelled source, propagating
2769 +     * CancellationException.
2770 +     */
2771 +    public void testWhenComplete_sourceCancelled() {
2772 +        for (ExecutionMode m : ExecutionMode.values())
2773 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2774 +        for (boolean createIncomplete : new boolean[] { true, false })
2775 +    {
2776 +        final AtomicInteger a = new AtomicInteger(0);
2777 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2778 +        if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
2779 +        final CompletableFuture<Integer> g = m.whenComplete
2780 +            (f,
2781 +             (Integer x, Throwable t) -> {
2782 +                threadAssertNull(x);
2783 +                threadAssertTrue(t instanceof CancellationException);
2784 +                a.getAndIncrement();
2785 +            });
2786 +        if (createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
2787 +
2788 +        //try { g.join(); } catch (Throwable t) { throw new Error(t); }
2789 +        checkCompletedWithWrappedCancellationException(g);
2790 +        checkCancelled(f);
2791 +        assertEquals(1, a.get());
2792 +    }}
2793 +
2794 +    /**
2795 +     * If a whenComplete action throws an exception when triggered by
2796 +     * a normal completion, it completes exceptionally
2797 +     */
2798 +    public void testWhenComplete_actionFailed() {
2799 +        for (boolean createIncomplete : new boolean[] { true, false })
2800 +        for (ExecutionMode m : ExecutionMode.values())
2801 +        for (Integer v1 : new Integer[] { 1, null })
2802 +    {
2803 +        final AtomicInteger a = new AtomicInteger(0);
2804 +        final CFException ex = new CFException();
2805 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2806 +        if (!createIncomplete) f.complete(v1);
2807 +        final CompletableFuture<Integer> g = m.whenComplete
2808 +            (f,
2809 +             (Integer x, Throwable t) -> {
2810 +                threadAssertSame(x, v1);
2811 +                threadAssertNull(t);
2812 +                a.getAndIncrement();
2813 +                throw ex;
2814 +            });
2815 +        if (createIncomplete) f.complete(v1);
2816 +        checkCompletedNormally(f, v1);
2817 +        checkCompletedWithWrappedCFException(g, ex);
2818 +        assertEquals(1, a.get());
2819 +    }}
2820 +
2821 +    /**
2822 +     * If a whenComplete action throws an exception when triggered by
2823 +     * a source completion that also throws an exception, the source
2824 +     * exception takes precedence.
2825 +     */
2826 +    public void testWhenComplete_actionFailedSourceFailed() {
2827 +        for (boolean createIncomplete : new boolean[] { true, false })
2828 +        for (ExecutionMode m : ExecutionMode.values())
2829 +        for (Integer v1 : new Integer[] { 1, null })
2830 +    {
2831 +        final AtomicInteger a = new AtomicInteger(0);
2832 +        final CFException ex1 = new CFException();
2833 +        final CFException ex2 = new CFException();
2834 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2835 +
2836 +        if (!createIncomplete) f.completeExceptionally(ex1);
2837 +        final CompletableFuture<Integer> g = m.whenComplete
2838 +            (f,
2839 +             (Integer x, Throwable t) -> {
2840 +                threadAssertSame(t, ex1);
2841 +                threadAssertNull(x);
2842 +                a.getAndIncrement();
2843 +                throw ex2;
2844 +            });
2845 +        if (createIncomplete) f.completeExceptionally(ex1);
2846 +
2847 +        checkCompletedWithWrappedCFException(f, ex1);
2848 +        checkCompletedWithWrappedCFException(g, ex1);
2849 +        assertEquals(1, a.get());
2850 +    }}
2851 +
2852   }

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