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Comparing jsr166/src/test/tck/CompletableFutureTest.java (file contents):
Revision 1.4 by jsr166, Sun Feb 10 21:18:25 2013 UTC vs.
Revision 1.80 by jsr166, Mon Jun 16 17:29:03 2014 UTC

# Line 7 | Line 7
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 27 | Line 39 | public class CompletableFutureTest exten
39          return new TestSuite(CompletableFutureTest.class);
40      }
41  
42 +    static class CFException extends RuntimeException {}
43 +
44      void checkIncomplete(CompletableFuture<?> f) {
45          assertFalse(f.isDone());
46          assertFalse(f.isCancelled());
# Line 42 | Line 56 | public class CompletableFutureTest exten
56          catch (Throwable fail) { threadUnexpectedException(fail); }
57      }
58  
59 <    void checkCompletedNormally(CompletableFuture<?> f, Object value) {
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 <            assertSame(value, f.join());
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 <            assertSame(value, f.getNow(null));
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 +    <U> void checkCompletedExceptionallyWithRootCause(CompletableFuture<U> f,
109 +                                                      Throwable ex) {
110          try {
111 <            assertSame(value, f.get());
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 <            assertSame(value, f.get(0L, SECONDS));
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 +
135 +        assertTrue(f.isDone());
136 +        assertFalse(f.isCancelled());
137 +        assertTrue(f.toString().contains("[Completed exceptionally]"));
138      }
139  
140 <    // XXXX Just a skeleton implementation for now.
141 <    public void testTODO() {
142 <        fail("Please add some real tests!");
140 >    <U> void checkCompletedWithWrappedException(CompletableFuture<U> f,
141 >                                                Throwable ex) {
142 >        checkCompletedExceptionallyWithRootCause(f, ex);
143 >        try {
144 >            CompletableFuture<Throwable> spy = f.handle
145 >                ((U u, Throwable t) -> t);
146 >            assertTrue(spy.join() instanceof CompletionException);
147 >            assertSame(ex, spy.join().getCause());
148 >        } catch (Throwable fail) { threadUnexpectedException(fail); }
149      }
150  
151 +    <U> void checkCompletedExceptionally(CompletableFuture<U> f, Throwable ex) {
152 +        checkCompletedExceptionallyWithRootCause(f, ex);
153 +        try {
154 +            CompletableFuture<Throwable> spy = f.handle
155 +                ((U u, Throwable t) -> t);
156 +            assertSame(ex, spy.join());
157 +        } catch (Throwable fail) { threadUnexpectedException(fail); }
158 +    }
159 +
160 +    void checkCancelled(CompletableFuture<?> f) {
161 +        try {
162 +            f.get(LONG_DELAY_MS, MILLISECONDS);
163 +            shouldThrow();
164 +        } catch (CancellationException success) {
165 +        } catch (Throwable fail) { threadUnexpectedException(fail); }
166 +        try {
167 +            f.join();
168 +            shouldThrow();
169 +        } catch (CancellationException success) {}
170 +        try {
171 +            f.getNow(null);
172 +            shouldThrow();
173 +        } catch (CancellationException success) {}
174 +        try {
175 +            f.get();
176 +            shouldThrow();
177 +        } catch (CancellationException success) {
178 +        } catch (Throwable fail) { threadUnexpectedException(fail); }
179 +        assertTrue(f.isDone());
180 +        assertTrue(f.isCompletedExceptionally());
181 +        assertTrue(f.isCancelled());
182 +        assertTrue(f.toString().contains("[Completed exceptionally]"));
183 +    }
184 +
185 +    void checkCompletedWithWrappedCancellationException(CompletableFuture<?> f) {
186 +        try {
187 +            f.get(LONG_DELAY_MS, MILLISECONDS);
188 +            shouldThrow();
189 +        } catch (ExecutionException success) {
190 +            assertTrue(success.getCause() instanceof CancellationException);
191 +        } catch (Throwable fail) { threadUnexpectedException(fail); }
192 +        try {
193 +            f.join();
194 +            shouldThrow();
195 +        } catch (CompletionException success) {
196 +            assertTrue(success.getCause() instanceof CancellationException);
197 +        }
198 +        try {
199 +            f.getNow(null);
200 +            shouldThrow();
201 +        } catch (CompletionException success) {
202 +            assertTrue(success.getCause() instanceof CancellationException);
203 +        }
204 +        try {
205 +            f.get();
206 +            shouldThrow();
207 +        } catch (ExecutionException success) {
208 +            assertTrue(success.getCause() instanceof CancellationException);
209 +        } catch (Throwable fail) { threadUnexpectedException(fail); }
210 +        assertTrue(f.isDone());
211 +        assertFalse(f.isCancelled());
212 +        assertTrue(f.isCompletedExceptionally());
213 +        assertTrue(f.toString().contains("[Completed exceptionally]"));
214 +    }
215 +
216 +    /**
217 +     * A newly constructed CompletableFuture is incomplete, as indicated
218 +     * by methods isDone, isCancelled, and getNow
219 +     */
220 +    public void testConstructor() {
221 +        CompletableFuture<Integer> f = new CompletableFuture<>();
222 +        checkIncomplete(f);
223 +    }
224 +
225 +    /**
226 +     * complete completes normally, as indicated by methods isDone,
227 +     * isCancelled, join, get, and getNow
228 +     */
229 +    public void testComplete() {
230 +        for (Integer v1 : new Integer[] { 1, null })
231 +    {
232 +        CompletableFuture<Integer> f = new CompletableFuture<>();
233 +        checkIncomplete(f);
234 +        assertTrue(f.complete(v1));
235 +        assertFalse(f.complete(v1));
236 +        checkCompletedNormally(f, v1);
237 +    }}
238 +
239 +    /**
240 +     * completeExceptionally completes exceptionally, as indicated by
241 +     * methods isDone, isCancelled, join, get, and getNow
242 +     */
243 +    public void testCompleteExceptionally() {
244 +        CompletableFuture<Integer> f = new CompletableFuture<>();
245 +        CFException ex = new CFException();
246 +        checkIncomplete(f);
247 +        f.completeExceptionally(ex);
248 +        checkCompletedExceptionally(f, ex);
249 +    }
250 +
251 +    /**
252 +     * cancel completes exceptionally and reports cancelled, as indicated by
253 +     * methods isDone, isCancelled, join, get, and getNow
254 +     */
255 +    public void testCancel() {
256 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
257 +    {
258 +        CompletableFuture<Integer> f = new CompletableFuture<>();
259 +        checkIncomplete(f);
260 +        assertTrue(f.cancel(true));
261 +        assertTrue(f.cancel(true));
262 +        checkCancelled(f);
263 +    }}
264 +
265 +    /**
266 +     * obtrudeValue forces completion with given value
267 +     */
268 +    public void testObtrudeValue() {
269 +        CompletableFuture<Integer> f = new CompletableFuture<>();
270 +        checkIncomplete(f);
271 +        assertTrue(f.complete(one));
272 +        checkCompletedNormally(f, one);
273 +        f.obtrudeValue(three);
274 +        checkCompletedNormally(f, three);
275 +        f.obtrudeValue(two);
276 +        checkCompletedNormally(f, two);
277 +        f = new CompletableFuture<>();
278 +        f.obtrudeValue(three);
279 +        checkCompletedNormally(f, three);
280 +        f.obtrudeValue(null);
281 +        checkCompletedNormally(f, null);
282 +        f = new CompletableFuture<>();
283 +        f.completeExceptionally(new CFException());
284 +        f.obtrudeValue(four);
285 +        checkCompletedNormally(f, four);
286 +    }
287 +
288 +    /**
289 +     * obtrudeException forces completion with given exception
290 +     */
291 +    public void testObtrudeException() {
292 +        for (Integer v1 : new Integer[] { 1, null })
293 +    {
294 +        CFException ex;
295 +        CompletableFuture<Integer> f;
296 +
297 +        f = new CompletableFuture<>();
298 +        assertTrue(f.complete(v1));
299 +        for (int i = 0; i < 2; i++) {
300 +            f.obtrudeException(ex = new CFException());
301 +            checkCompletedExceptionally(f, ex);
302 +        }
303 +
304 +        f = new CompletableFuture<>();
305 +        for (int i = 0; i < 2; i++) {
306 +            f.obtrudeException(ex = new CFException());
307 +            checkCompletedExceptionally(f, ex);
308 +        }
309 +
310 +        f = new CompletableFuture<>();
311 +        f.completeExceptionally(ex = new CFException());
312 +        f.obtrudeValue(v1);
313 +        checkCompletedNormally(f, v1);
314 +        f.obtrudeException(ex = new CFException());
315 +        checkCompletedExceptionally(f, ex);
316 +        f.completeExceptionally(new CFException());
317 +        checkCompletedExceptionally(f, ex);
318 +        assertFalse(f.complete(v1));
319 +        checkCompletedExceptionally(f, ex);
320 +    }}
321 +
322 +    /**
323 +     * getNumberOfDependents returns number of dependent tasks
324 +     */
325 +    public void testGetNumberOfDependents() {
326 +        for (ExecutionMode m : ExecutionMode.values())
327 +        for (Integer v1 : new Integer[] { 1, null })
328 +    {
329 +        CompletableFuture<Integer> f = new CompletableFuture<>();
330 +        assertEquals(0, f.getNumberOfDependents());
331 +        final CompletableFuture<Void> g = m.thenRun(f, new Noop(m));
332 +        assertEquals(1, f.getNumberOfDependents());
333 +        assertEquals(0, g.getNumberOfDependents());
334 +        final CompletableFuture<Void> h = m.thenRun(f, new Noop(m));
335 +        assertEquals(2, f.getNumberOfDependents());
336 +        assertEquals(0, h.getNumberOfDependents());
337 +        assertTrue(f.complete(v1));
338 +        checkCompletedNormally(g, null);
339 +        checkCompletedNormally(h, null);
340 +        assertEquals(0, f.getNumberOfDependents());
341 +        assertEquals(0, g.getNumberOfDependents());
342 +        assertEquals(0, h.getNumberOfDependents());
343 +    }}
344 +
345 +    /**
346 +     * toString indicates current completion state
347 +     */
348      public void testToString() {
349          CompletableFuture<String> f;
350  
351          f = new CompletableFuture<String>();
352          assertTrue(f.toString().contains("[Not completed]"));
353  
354 <        f.complete("foo");
354 >        assertTrue(f.complete("foo"));
355          assertTrue(f.toString().contains("[Completed normally]"));
356  
357          f = new CompletableFuture<String>();
358 <        f.completeExceptionally(new IndexOutOfBoundsException());
358 >        assertTrue(f.completeExceptionally(new IndexOutOfBoundsException()));
359          assertTrue(f.toString().contains("[Completed exceptionally]"));
360 +
361 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false }) {
362 +            f = new CompletableFuture<String>();
363 +            assertTrue(f.cancel(mayInterruptIfRunning));
364 +            assertTrue(f.toString().contains("[Completed exceptionally]"));
365 +        }
366      }
367  
368      /**
369 +     * completedFuture returns a completed CompletableFuture with given value
370 +     */
371 +    public void testCompletedFuture() {
372 +        CompletableFuture<String> f = CompletableFuture.completedFuture("test");
373 +        checkCompletedNormally(f, "test");
374 +    }
375 +
376 +    abstract class CheckedAction {
377 +        int invocationCount = 0;
378 +        final ExecutionMode m;
379 +        CheckedAction(ExecutionMode m) { this.m = m; }
380 +        void invoked() {
381 +            m.checkExecutionMode();
382 +            assertEquals(0, invocationCount++);
383 +        }
384 +        void assertNotInvoked() { assertEquals(0, invocationCount); }
385 +        void assertInvoked() { assertEquals(1, invocationCount); }
386 +    }
387 +
388 +    abstract class CheckedIntegerAction extends CheckedAction {
389 +        Integer value;
390 +        CheckedIntegerAction(ExecutionMode m) { super(m); }
391 +        void assertValue(Integer expected) {
392 +            assertInvoked();
393 +            assertEquals(expected, value);
394 +        }
395 +    }
396 +
397 +    class IntegerSupplier extends CheckedAction
398 +        implements Supplier<Integer>
399 +    {
400 +        final Integer value;
401 +        IntegerSupplier(ExecutionMode m, Integer value) {
402 +            super(m);
403 +            this.value = value;
404 +        }
405 +        public Integer get() {
406 +            invoked();
407 +            return value;
408 +        }
409 +    }
410 +
411 +    // A function that handles and produces null values as well.
412 +    static Integer inc(Integer x) {
413 +        return (x == null) ? null : x + 1;
414 +    }
415 +
416 +    class NoopConsumer extends CheckedIntegerAction
417 +        implements Consumer<Integer>
418 +    {
419 +        NoopConsumer(ExecutionMode m) { super(m); }
420 +        public void accept(Integer x) {
421 +            invoked();
422 +            value = x;
423 +        }
424 +    }
425 +
426 +    class IncFunction extends CheckedIntegerAction
427 +        implements Function<Integer,Integer>
428 +    {
429 +        IncFunction(ExecutionMode m) { super(m); }
430 +        public Integer apply(Integer x) {
431 +            invoked();
432 +            return value = inc(x);
433 +        }
434 +    }
435 +
436 +    // Choose non-commutative actions for better coverage
437 +    // A non-commutative function that handles and produces null values as well.
438 +    static Integer subtract(Integer x, Integer y) {
439 +        return (x == null && y == null) ? null :
440 +            ((x == null) ? 42 : x.intValue())
441 +            - ((y == null) ? 99 : y.intValue());
442 +    }
443 +
444 +    class SubtractAction extends CheckedIntegerAction
445 +        implements BiConsumer<Integer, Integer>
446 +    {
447 +        SubtractAction(ExecutionMode m) { super(m); }
448 +        public void accept(Integer x, Integer y) {
449 +            invoked();
450 +            value = subtract(x, y);
451 +        }
452 +    }
453 +
454 +    class SubtractFunction extends CheckedIntegerAction
455 +        implements BiFunction<Integer, Integer, Integer>
456 +    {
457 +        SubtractFunction(ExecutionMode m) { super(m); }
458 +        public Integer apply(Integer x, Integer y) {
459 +            invoked();
460 +            return value = subtract(x, y);
461 +        }
462 +    }
463 +
464 +    class Noop extends CheckedAction implements Runnable {
465 +        Noop(ExecutionMode m) { super(m); }
466 +        public void run() {
467 +            invoked();
468 +        }
469 +    }
470 +
471 +    class FailingSupplier extends CheckedAction
472 +        implements Supplier<Integer>
473 +    {
474 +        FailingSupplier(ExecutionMode m) { super(m); }
475 +        public Integer get() {
476 +            invoked();
477 +            throw new CFException();
478 +        }
479 +    }
480 +
481 +    class FailingConsumer extends CheckedIntegerAction
482 +        implements Consumer<Integer>
483 +    {
484 +        FailingConsumer(ExecutionMode m) { super(m); }
485 +        public void accept(Integer x) {
486 +            invoked();
487 +            value = x;
488 +            throw new CFException();
489 +        }
490 +    }
491 +
492 +    class FailingBiConsumer extends CheckedIntegerAction
493 +        implements BiConsumer<Integer, Integer>
494 +    {
495 +        FailingBiConsumer(ExecutionMode m) { super(m); }
496 +        public void accept(Integer x, Integer y) {
497 +            invoked();
498 +            value = subtract(x, y);
499 +            throw new CFException();
500 +        }
501 +    }
502 +
503 +    class FailingFunction extends CheckedIntegerAction
504 +        implements Function<Integer, Integer>
505 +    {
506 +        FailingFunction(ExecutionMode m) { super(m); }
507 +        public Integer apply(Integer x) {
508 +            invoked();
509 +            value = x;
510 +            throw new CFException();
511 +        }
512 +    }
513 +
514 +    class FailingBiFunction extends CheckedIntegerAction
515 +        implements BiFunction<Integer, Integer, Integer>
516 +    {
517 +        FailingBiFunction(ExecutionMode m) { super(m); }
518 +        public Integer apply(Integer x, Integer y) {
519 +            invoked();
520 +            value = subtract(x, y);
521 +            throw new CFException();
522 +        }
523 +    }
524 +
525 +    class FailingRunnable extends CheckedAction implements Runnable {
526 +        FailingRunnable(ExecutionMode m) { super(m); }
527 +        public void run() {
528 +            invoked();
529 +            throw new CFException();
530 +        }
531 +    }
532 +
533 +
534 +    class CompletableFutureInc extends CheckedIntegerAction
535 +        implements Function<Integer, CompletableFuture<Integer>>
536 +    {
537 +        CompletableFutureInc(ExecutionMode m) { super(m); }
538 +        public CompletableFuture<Integer> apply(Integer x) {
539 +            invoked();
540 +            value = x;
541 +            CompletableFuture<Integer> f = new CompletableFuture<>();
542 +            assertTrue(f.complete(inc(x)));
543 +            return f;
544 +        }
545 +    }
546 +
547 +    class FailingCompletableFutureFunction extends CheckedIntegerAction
548 +        implements Function<Integer, CompletableFuture<Integer>>
549 +    {
550 +        FailingCompletableFutureFunction(ExecutionMode m) { super(m); }
551 +        public CompletableFuture<Integer> apply(Integer x) {
552 +            invoked();
553 +            value = x;
554 +            throw new CFException();
555 +        }
556 +    }
557 +
558 +    // Used for explicit executor tests
559 +    static final class ThreadExecutor implements Executor {
560 +        final AtomicInteger count = new AtomicInteger(0);
561 +        static final ThreadGroup tg = new ThreadGroup("ThreadExecutor");
562 +        static boolean startedCurrentThread() {
563 +            return Thread.currentThread().getThreadGroup() == tg;
564 +        }
565 +
566 +        public void execute(Runnable r) {
567 +            count.getAndIncrement();
568 +            new Thread(tg, r).start();
569 +        }
570 +    }
571 +
572 +    /**
573 +     * Permits the testing of parallel code for the 3 different
574 +     * execution modes without copy/pasting all the test methods.
575 +     */
576 +    enum ExecutionMode {
577 +        DEFAULT {
578 +            public void checkExecutionMode() {
579 +                assertFalse(ThreadExecutor.startedCurrentThread());
580 +                assertNull(ForkJoinTask.getPool());
581 +            }
582 +            public CompletableFuture<Void> runAsync(Runnable a) {
583 +                throw new UnsupportedOperationException();
584 +            }
585 +            public <U> CompletableFuture<U> supplyAsync(Supplier<U> a) {
586 +                throw new UnsupportedOperationException();
587 +            }
588 +            public <T> CompletableFuture<Void> thenRun
589 +                (CompletableFuture<T> f, Runnable a) {
590 +                return f.thenRun(a);
591 +            }
592 +            public <T> CompletableFuture<Void> thenAccept
593 +                (CompletableFuture<T> f, Consumer<? super T> a) {
594 +                return f.thenAccept(a);
595 +            }
596 +            public <T,U> CompletableFuture<U> thenApply
597 +                (CompletableFuture<T> f, Function<? super T,U> a) {
598 +                return f.thenApply(a);
599 +            }
600 +            public <T,U> CompletableFuture<U> thenCompose
601 +                (CompletableFuture<T> f,
602 +                 Function<? super T,? extends CompletionStage<U>> a) {
603 +                return f.thenCompose(a);
604 +            }
605 +            public <T,U> CompletableFuture<U> handle
606 +                (CompletableFuture<T> f,
607 +                 BiFunction<? super T,Throwable,? extends U> a) {
608 +                return f.handle(a);
609 +            }
610 +            public <T> CompletableFuture<T> whenComplete
611 +                (CompletableFuture<T> f,
612 +                 BiConsumer<? super T,? super Throwable> a) {
613 +                return f.whenComplete(a);
614 +            }
615 +            public <T,U> CompletableFuture<Void> runAfterBoth
616 +                (CompletableFuture<T> f, CompletableFuture<U> g, Runnable a) {
617 +                return f.runAfterBoth(g, a);
618 +            }
619 +            public <T,U> CompletableFuture<Void> thenAcceptBoth
620 +                (CompletableFuture<T> f,
621 +                 CompletionStage<? extends U> g,
622 +                 BiConsumer<? super T,? super U> a) {
623 +                return f.thenAcceptBoth(g, a);
624 +            }
625 +            public <T,U,V> CompletableFuture<V> thenCombine
626 +                (CompletableFuture<T> f,
627 +                 CompletionStage<? extends U> g,
628 +                 BiFunction<? super T,? super U,? extends V> a) {
629 +                return f.thenCombine(g, a);
630 +            }
631 +            public <T> CompletableFuture<Void> runAfterEither
632 +                (CompletableFuture<T> f,
633 +                 CompletionStage<?> g,
634 +                 java.lang.Runnable a) {
635 +                return f.runAfterEither(g, a);
636 +            }
637 +            public <T> CompletableFuture<Void> acceptEither
638 +                (CompletableFuture<T> f,
639 +                 CompletionStage<? extends T> g,
640 +                 Consumer<? super T> a) {
641 +                return f.acceptEither(g, a);
642 +            }
643 +            public <T,U> CompletableFuture<U> applyToEither
644 +                (CompletableFuture<T> f,
645 +                 CompletionStage<? extends T> g,
646 +                 Function<? super T,U> a) {
647 +                return f.applyToEither(g, a);
648 +            }
649 +        },
650 +
651 +        ASYNC {
652 +            public void checkExecutionMode() {
653 +                assertSame(ForkJoinPool.commonPool(),
654 +                           ForkJoinTask.getPool());
655 +            }
656 +            public CompletableFuture<Void> runAsync(Runnable a) {
657 +                return CompletableFuture.runAsync(a);
658 +            }
659 +            public <U> CompletableFuture<U> supplyAsync(Supplier<U> a) {
660 +                return CompletableFuture.supplyAsync(a);
661 +            }
662 +            public <T> CompletableFuture<Void> thenRun
663 +                (CompletableFuture<T> f, Runnable a) {
664 +                return f.thenRunAsync(a);
665 +            }
666 +            public <T> CompletableFuture<Void> thenAccept
667 +                (CompletableFuture<T> f, Consumer<? super T> a) {
668 +                return f.thenAcceptAsync(a);
669 +            }
670 +            public <T,U> CompletableFuture<U> thenApply
671 +                (CompletableFuture<T> f, Function<? super T,U> a) {
672 +                return f.thenApplyAsync(a);
673 +            }
674 +            public <T,U> CompletableFuture<U> thenCompose
675 +                (CompletableFuture<T> f,
676 +                 Function<? super T,? extends CompletionStage<U>> a) {
677 +                return f.thenComposeAsync(a);
678 +            }
679 +            public <T,U> CompletableFuture<U> handle
680 +                (CompletableFuture<T> f,
681 +                 BiFunction<? super T,Throwable,? extends U> a) {
682 +                return f.handleAsync(a);
683 +            }
684 +            public <T> CompletableFuture<T> whenComplete
685 +                (CompletableFuture<T> f,
686 +                 BiConsumer<? super T,? super Throwable> a) {
687 +                return f.whenCompleteAsync(a);
688 +            }
689 +            public <T,U> CompletableFuture<Void> runAfterBoth
690 +                (CompletableFuture<T> f, CompletableFuture<U> g, Runnable a) {
691 +                return f.runAfterBothAsync(g, a);
692 +            }
693 +            public <T,U> CompletableFuture<Void> thenAcceptBoth
694 +                (CompletableFuture<T> f,
695 +                 CompletionStage<? extends U> g,
696 +                 BiConsumer<? super T,? super U> a) {
697 +                return f.thenAcceptBothAsync(g, a);
698 +            }
699 +            public <T,U,V> CompletableFuture<V> thenCombine
700 +                (CompletableFuture<T> f,
701 +                 CompletionStage<? extends U> g,
702 +                 BiFunction<? super T,? super U,? extends V> a) {
703 +                return f.thenCombineAsync(g, a);
704 +            }
705 +            public <T> CompletableFuture<Void> runAfterEither
706 +                (CompletableFuture<T> f,
707 +                 CompletionStage<?> g,
708 +                 java.lang.Runnable a) {
709 +                return f.runAfterEitherAsync(g, a);
710 +            }
711 +            public <T> CompletableFuture<Void> acceptEither
712 +                (CompletableFuture<T> f,
713 +                 CompletionStage<? extends T> g,
714 +                 Consumer<? super T> a) {
715 +                return f.acceptEitherAsync(g, a);
716 +            }
717 +            public <T,U> CompletableFuture<U> applyToEither
718 +                (CompletableFuture<T> f,
719 +                 CompletionStage<? extends T> g,
720 +                 Function<? super T,U> a) {
721 +                return f.applyToEitherAsync(g, a);
722 +            }
723 +        },
724 +
725 +        EXECUTOR {
726 +            public void checkExecutionMode() {
727 +                assertTrue(ThreadExecutor.startedCurrentThread());
728 +            }
729 +            public CompletableFuture<Void> runAsync(Runnable a) {
730 +                return CompletableFuture.runAsync(a, new ThreadExecutor());
731 +            }
732 +            public <U> CompletableFuture<U> supplyAsync(Supplier<U> a) {
733 +                return CompletableFuture.supplyAsync(a, new ThreadExecutor());
734 +            }
735 +            public <T> CompletableFuture<Void> thenRun
736 +                (CompletableFuture<T> f, Runnable a) {
737 +                return f.thenRunAsync(a, new ThreadExecutor());
738 +            }
739 +            public <T> CompletableFuture<Void> thenAccept
740 +                (CompletableFuture<T> f, Consumer<? super T> a) {
741 +                return f.thenAcceptAsync(a, new ThreadExecutor());
742 +            }
743 +            public <T,U> CompletableFuture<U> thenApply
744 +                (CompletableFuture<T> f, Function<? super T,U> a) {
745 +                return f.thenApplyAsync(a, new ThreadExecutor());
746 +            }
747 +            public <T,U> CompletableFuture<U> thenCompose
748 +                (CompletableFuture<T> f,
749 +                 Function<? super T,? extends CompletionStage<U>> a) {
750 +                return f.thenComposeAsync(a, new ThreadExecutor());
751 +            }
752 +            public <T,U> CompletableFuture<U> handle
753 +                (CompletableFuture<T> f,
754 +                 BiFunction<? super T,Throwable,? extends U> a) {
755 +                return f.handleAsync(a, new ThreadExecutor());
756 +            }
757 +            public <T> CompletableFuture<T> whenComplete
758 +                (CompletableFuture<T> f,
759 +                 BiConsumer<? super T,? super Throwable> a) {
760 +                return f.whenCompleteAsync(a, new ThreadExecutor());
761 +            }
762 +            public <T,U> CompletableFuture<Void> runAfterBoth
763 +                (CompletableFuture<T> f, CompletableFuture<U> g, Runnable a) {
764 +                return f.runAfterBothAsync(g, a, new ThreadExecutor());
765 +            }
766 +            public <T,U> CompletableFuture<Void> thenAcceptBoth
767 +                (CompletableFuture<T> f,
768 +                 CompletionStage<? extends U> g,
769 +                 BiConsumer<? super T,? super U> a) {
770 +                return f.thenAcceptBothAsync(g, a, new ThreadExecutor());
771 +            }
772 +            public <T,U,V> CompletableFuture<V> thenCombine
773 +                (CompletableFuture<T> f,
774 +                 CompletionStage<? extends U> g,
775 +                 BiFunction<? super T,? super U,? extends V> a) {
776 +                return f.thenCombineAsync(g, a, new ThreadExecutor());
777 +            }
778 +            public <T> CompletableFuture<Void> runAfterEither
779 +                (CompletableFuture<T> f,
780 +                 CompletionStage<?> g,
781 +                 java.lang.Runnable a) {
782 +                return f.runAfterEitherAsync(g, a, new ThreadExecutor());
783 +            }
784 +            public <T> CompletableFuture<Void> acceptEither
785 +                (CompletableFuture<T> f,
786 +                 CompletionStage<? extends T> g,
787 +                 Consumer<? super T> a) {
788 +                return f.acceptEitherAsync(g, a, new ThreadExecutor());
789 +            }
790 +            public <T,U> CompletableFuture<U> applyToEither
791 +                (CompletableFuture<T> f,
792 +                 CompletionStage<? extends T> g,
793 +                 Function<? super T,U> a) {
794 +                return f.applyToEitherAsync(g, a, new ThreadExecutor());
795 +            }
796 +        };
797 +
798 +        public abstract void checkExecutionMode();
799 +        public abstract CompletableFuture<Void> runAsync(Runnable a);
800 +        public abstract <U> CompletableFuture<U> supplyAsync(Supplier<U> a);
801 +        public abstract <T> CompletableFuture<Void> thenRun
802 +            (CompletableFuture<T> f, Runnable a);
803 +        public abstract <T> CompletableFuture<Void> thenAccept
804 +            (CompletableFuture<T> f, Consumer<? super T> a);
805 +        public abstract <T,U> CompletableFuture<U> thenApply
806 +            (CompletableFuture<T> f, Function<? super T,U> a);
807 +        public abstract <T,U> CompletableFuture<U> thenCompose
808 +            (CompletableFuture<T> f,
809 +             Function<? super T,? extends CompletionStage<U>> a);
810 +        public abstract <T,U> CompletableFuture<U> handle
811 +            (CompletableFuture<T> f,
812 +             BiFunction<? super T,Throwable,? extends U> a);
813 +        public abstract <T> CompletableFuture<T> whenComplete
814 +            (CompletableFuture<T> f,
815 +             BiConsumer<? super T,? super Throwable> a);
816 +        public abstract <T,U> CompletableFuture<Void> runAfterBoth
817 +            (CompletableFuture<T> f, CompletableFuture<U> g, Runnable a);
818 +        public abstract <T,U> CompletableFuture<Void> thenAcceptBoth
819 +            (CompletableFuture<T> f,
820 +             CompletionStage<? extends U> g,
821 +             BiConsumer<? super T,? super U> a);
822 +        public abstract <T,U,V> CompletableFuture<V> thenCombine
823 +            (CompletableFuture<T> f,
824 +             CompletionStage<? extends U> g,
825 +             BiFunction<? super T,? super U,? extends V> a);
826 +        public abstract <T> CompletableFuture<Void> runAfterEither
827 +            (CompletableFuture<T> f,
828 +             CompletionStage<?> g,
829 +             java.lang.Runnable a);
830 +        public abstract <T> CompletableFuture<Void> acceptEither
831 +            (CompletableFuture<T> f,
832 +             CompletionStage<? extends T> g,
833 +             Consumer<? super T> a);
834 +        public abstract <T,U> CompletableFuture<U> applyToEither
835 +            (CompletableFuture<T> f,
836 +             CompletionStage<? extends T> g,
837 +             Function<? super T,U> a);
838 +    }
839 +
840 +    /**
841 +     * exceptionally action is not invoked when source completes
842 +     * normally, and source result is propagated
843 +     */
844 +    public void testExceptionally_normalCompletion() {
845 +        for (boolean createIncomplete : new boolean[] { true, false })
846 +        for (Integer v1 : new Integer[] { 1, null })
847 +    {
848 +        final AtomicInteger a = new AtomicInteger(0);
849 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
850 +        if (!createIncomplete) assertTrue(f.complete(v1));
851 +        final CompletableFuture<Integer> g = f.exceptionally
852 +            ((Throwable t) -> {
853 +                // Should not be called
854 +                a.getAndIncrement();
855 +                throw new AssertionError();
856 +            });
857 +        if (createIncomplete) assertTrue(f.complete(v1));
858 +
859 +        checkCompletedNormally(g, v1);
860 +        checkCompletedNormally(f, v1);
861 +        assertEquals(0, a.get());
862 +    }}
863 +
864 +    /**
865 +     * exceptionally action completes with function value on source
866 +     * exception
867 +     */
868 +    public void testExceptionally_exceptionalCompletion() {
869 +        for (boolean createIncomplete : new boolean[] { true, false })
870 +        for (Integer v1 : new Integer[] { 1, null })
871 +    {
872 +        final AtomicInteger a = new AtomicInteger(0);
873 +        final CFException ex = new CFException();
874 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
875 +        if (!createIncomplete) f.completeExceptionally(ex);
876 +        final CompletableFuture<Integer> g = f.exceptionally
877 +            ((Throwable t) -> {
878 +                ExecutionMode.DEFAULT.checkExecutionMode();
879 +                threadAssertSame(t, ex);
880 +                a.getAndIncrement();
881 +                return v1;
882 +            });
883 +        if (createIncomplete) f.completeExceptionally(ex);
884 +
885 +        checkCompletedNormally(g, v1);
886 +        assertEquals(1, a.get());
887 +    }}
888 +
889 +    public void testExceptionally_exceptionalCompletionActionFailed() {
890 +        for (boolean createIncomplete : new boolean[] { true, false })
891 +        for (Integer v1 : new Integer[] { 1, null })
892 +    {
893 +        final AtomicInteger a = new AtomicInteger(0);
894 +        final CFException ex1 = new CFException();
895 +        final CFException ex2 = new CFException();
896 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
897 +        if (!createIncomplete) f.completeExceptionally(ex1);
898 +        final CompletableFuture<Integer> g = f.exceptionally
899 +            ((Throwable t) -> {
900 +                ExecutionMode.DEFAULT.checkExecutionMode();
901 +                threadAssertSame(t, ex1);
902 +                a.getAndIncrement();
903 +                throw ex2;
904 +            });
905 +        if (createIncomplete) f.completeExceptionally(ex1);
906 +
907 +        checkCompletedWithWrappedException(g, ex2);
908 +        assertEquals(1, a.get());
909 +    }}
910 +
911 +    /**
912 +     * whenComplete action executes on normal completion, propagating
913 +     * source result.
914 +     */
915 +    public void testWhenComplete_normalCompletion1() {
916 +        for (ExecutionMode m : ExecutionMode.values())
917 +        for (boolean createIncomplete : new boolean[] { true, false })
918 +        for (Integer v1 : new Integer[] { 1, null })
919 +    {
920 +        final AtomicInteger a = new AtomicInteger(0);
921 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
922 +        if (!createIncomplete) assertTrue(f.complete(v1));
923 +        final CompletableFuture<Integer> g = m.whenComplete
924 +            (f,
925 +             (Integer x, Throwable t) -> {
926 +                m.checkExecutionMode();
927 +                threadAssertSame(x, v1);
928 +                threadAssertNull(t);
929 +                a.getAndIncrement();
930 +            });
931 +        if (createIncomplete) assertTrue(f.complete(v1));
932 +
933 +        checkCompletedNormally(g, v1);
934 +        checkCompletedNormally(f, v1);
935 +        assertEquals(1, a.get());
936 +    }}
937 +
938 +    /**
939 +     * whenComplete action executes on exceptional completion, propagating
940 +     * source result.
941 +     */
942 +    public void testWhenComplete_exceptionalCompletion() {
943 +        for (ExecutionMode m : ExecutionMode.values())
944 +        for (boolean createIncomplete : new boolean[] { true, false })
945 +        for (Integer v1 : new Integer[] { 1, null })
946 +    {
947 +        final AtomicInteger a = new AtomicInteger(0);
948 +        final CFException ex = new CFException();
949 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
950 +        if (!createIncomplete) f.completeExceptionally(ex);
951 +        final CompletableFuture<Integer> g = m.whenComplete
952 +            (f,
953 +             (Integer x, Throwable t) -> {
954 +                m.checkExecutionMode();
955 +                threadAssertNull(x);
956 +                threadAssertSame(t, ex);
957 +                a.getAndIncrement();
958 +            });
959 +        if (createIncomplete) f.completeExceptionally(ex);
960 +
961 +        checkCompletedWithWrappedException(g, ex);
962 +        checkCompletedExceptionally(f, ex);
963 +        assertEquals(1, a.get());
964 +    }}
965 +
966 +    /**
967 +     * whenComplete action executes on cancelled source, propagating
968 +     * CancellationException.
969 +     */
970 +    public void testWhenComplete_sourceCancelled() {
971 +        for (ExecutionMode m : ExecutionMode.values())
972 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
973 +        for (boolean createIncomplete : new boolean[] { true, false })
974 +    {
975 +        final AtomicInteger a = new AtomicInteger(0);
976 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
977 +        if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
978 +        final CompletableFuture<Integer> g = m.whenComplete
979 +            (f,
980 +             (Integer x, Throwable t) -> {
981 +                m.checkExecutionMode();
982 +                threadAssertNull(x);
983 +                threadAssertTrue(t instanceof CancellationException);
984 +                a.getAndIncrement();
985 +            });
986 +        if (createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
987 +
988 +        checkCompletedWithWrappedCancellationException(g);
989 +        checkCancelled(f);
990 +        assertEquals(1, a.get());
991 +    }}
992 +
993 +    /**
994 +     * If a whenComplete action throws an exception when triggered by
995 +     * a normal completion, it completes exceptionally
996 +     */
997 +    public void testWhenComplete_actionFailed() {
998 +        for (boolean createIncomplete : new boolean[] { true, false })
999 +        for (ExecutionMode m : ExecutionMode.values())
1000 +        for (Integer v1 : new Integer[] { 1, null })
1001 +    {
1002 +        final AtomicInteger a = new AtomicInteger(0);
1003 +        final CFException ex = new CFException();
1004 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1005 +        if (!createIncomplete) assertTrue(f.complete(v1));
1006 +        final CompletableFuture<Integer> g = m.whenComplete
1007 +            (f,
1008 +             (Integer x, Throwable t) -> {
1009 +                m.checkExecutionMode();
1010 +                threadAssertSame(x, v1);
1011 +                threadAssertNull(t);
1012 +                a.getAndIncrement();
1013 +                throw ex;
1014 +            });
1015 +        if (createIncomplete) assertTrue(f.complete(v1));
1016 +
1017 +        checkCompletedWithWrappedException(g, ex);
1018 +        checkCompletedNormally(f, v1);
1019 +        assertEquals(1, a.get());
1020 +    }}
1021 +
1022 +    /**
1023 +     * If a whenComplete action throws an exception when triggered by
1024 +     * a source completion that also throws an exception, the source
1025 +     * exception takes precedence.
1026 +     */
1027 +    public void testWhenComplete_actionFailedSourceFailed() {
1028 +        for (boolean createIncomplete : new boolean[] { true, false })
1029 +        for (ExecutionMode m : ExecutionMode.values())
1030 +        for (Integer v1 : new Integer[] { 1, null })
1031 +    {
1032 +        final AtomicInteger a = new AtomicInteger(0);
1033 +        final CFException ex1 = new CFException();
1034 +        final CFException ex2 = new CFException();
1035 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1036 +
1037 +        if (!createIncomplete) f.completeExceptionally(ex1);
1038 +        final CompletableFuture<Integer> g = m.whenComplete
1039 +            (f,
1040 +             (Integer x, Throwable t) -> {
1041 +                m.checkExecutionMode();
1042 +                threadAssertSame(t, ex1);
1043 +                threadAssertNull(x);
1044 +                a.getAndIncrement();
1045 +                throw ex2;
1046 +            });
1047 +        if (createIncomplete) f.completeExceptionally(ex1);
1048 +
1049 +        checkCompletedWithWrappedException(g, ex1);
1050 +        checkCompletedExceptionally(f, ex1);
1051 +        assertEquals(1, a.get());
1052 +    }}
1053 +
1054 +    /**
1055 +     * handle action completes normally with function value on normal
1056 +     * completion of source
1057 +     */
1058 +    public void testHandle_normalCompletion() {
1059 +        for (ExecutionMode m : ExecutionMode.values())
1060 +        for (boolean createIncomplete : new boolean[] { true, false })
1061 +        for (Integer v1 : new Integer[] { 1, null })
1062 +    {
1063 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1064 +        final AtomicInteger a = new AtomicInteger(0);
1065 +        if (!createIncomplete) assertTrue(f.complete(v1));
1066 +        final CompletableFuture<Integer> g = m.handle
1067 +            (f,
1068 +             (Integer x, Throwable t) -> {
1069 +                m.checkExecutionMode();
1070 +                threadAssertSame(x, v1);
1071 +                threadAssertNull(t);
1072 +                a.getAndIncrement();
1073 +                return inc(v1);
1074 +            });
1075 +        if (createIncomplete) assertTrue(f.complete(v1));
1076 +
1077 +        checkCompletedNormally(g, inc(v1));
1078 +        checkCompletedNormally(f, v1);
1079 +        assertEquals(1, a.get());
1080 +    }}
1081 +
1082 +    /**
1083 +     * handle action completes normally with function value on
1084 +     * exceptional completion of source
1085 +     */
1086 +    public void testHandle_exceptionalCompletion() {
1087 +        for (ExecutionMode m : ExecutionMode.values())
1088 +        for (boolean createIncomplete : new boolean[] { true, false })
1089 +        for (Integer v1 : new Integer[] { 1, null })
1090 +    {
1091 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1092 +        final AtomicInteger a = new AtomicInteger(0);
1093 +        final CFException ex = new CFException();
1094 +        if (!createIncomplete) f.completeExceptionally(ex);
1095 +        final CompletableFuture<Integer> g = m.handle
1096 +            (f,
1097 +             (Integer x, Throwable t) -> {
1098 +                m.checkExecutionMode();
1099 +                threadAssertNull(x);
1100 +                threadAssertSame(t, ex);
1101 +                a.getAndIncrement();
1102 +                return v1;
1103 +            });
1104 +        if (createIncomplete) f.completeExceptionally(ex);
1105 +
1106 +        checkCompletedNormally(g, v1);
1107 +        checkCompletedExceptionally(f, ex);
1108 +        assertEquals(1, a.get());
1109 +    }}
1110 +
1111 +    /**
1112 +     * handle action completes normally with function value on
1113 +     * cancelled source
1114 +     */
1115 +    public void testHandle_sourceCancelled() {
1116 +        for (ExecutionMode m : ExecutionMode.values())
1117 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1118 +        for (boolean createIncomplete : new boolean[] { true, false })
1119 +        for (Integer v1 : new Integer[] { 1, null })
1120 +    {
1121 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1122 +        final AtomicInteger a = new AtomicInteger(0);
1123 +        if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
1124 +        final CompletableFuture<Integer> g = m.handle
1125 +            (f,
1126 +             (Integer x, Throwable t) -> {
1127 +                m.checkExecutionMode();
1128 +                threadAssertNull(x);
1129 +                threadAssertTrue(t instanceof CancellationException);
1130 +                a.getAndIncrement();
1131 +                return v1;
1132 +            });
1133 +        if (createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
1134 +
1135 +        checkCompletedNormally(g, v1);
1136 +        checkCancelled(f);
1137 +        assertEquals(1, a.get());
1138 +    }}
1139 +
1140 +    /**
1141 +     * handle result completes exceptionally if action does
1142 +     */
1143 +    public void testHandle_sourceFailedActionFailed() {
1144 +        for (ExecutionMode m : ExecutionMode.values())
1145 +        for (boolean createIncomplete : new boolean[] { true, false })
1146 +    {
1147 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1148 +        final AtomicInteger a = new AtomicInteger(0);
1149 +        final CFException ex1 = new CFException();
1150 +        final CFException ex2 = new CFException();
1151 +        if (!createIncomplete) f.completeExceptionally(ex1);
1152 +        final CompletableFuture<Integer> g = m.handle
1153 +            (f,
1154 +             (Integer x, Throwable t) -> {
1155 +                m.checkExecutionMode();
1156 +                threadAssertNull(x);
1157 +                threadAssertSame(ex1, t);
1158 +                a.getAndIncrement();
1159 +                throw ex2;
1160 +            });
1161 +        if (createIncomplete) f.completeExceptionally(ex1);
1162 +
1163 +        checkCompletedWithWrappedException(g, ex2);
1164 +        checkCompletedExceptionally(f, ex1);
1165 +        assertEquals(1, a.get());
1166 +    }}
1167 +
1168 +    public void testHandle_sourceCompletedNormallyActionFailed() {
1169 +        for (ExecutionMode m : ExecutionMode.values())
1170 +        for (boolean createIncomplete : new boolean[] { true, false })
1171 +        for (Integer v1 : new Integer[] { 1, null })
1172 +    {
1173 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1174 +        final AtomicInteger a = new AtomicInteger(0);
1175 +        final CFException ex = new CFException();
1176 +        if (!createIncomplete) assertTrue(f.complete(v1));
1177 +        final CompletableFuture<Integer> g = m.handle
1178 +            (f,
1179 +             (Integer x, Throwable t) -> {
1180 +                m.checkExecutionMode();
1181 +                threadAssertSame(x, v1);
1182 +                threadAssertNull(t);
1183 +                a.getAndIncrement();
1184 +                throw ex;
1185 +            });
1186 +        if (createIncomplete) assertTrue(f.complete(v1));
1187 +
1188 +        checkCompletedWithWrappedException(g, ex);
1189 +        checkCompletedNormally(f, v1);
1190 +        assertEquals(1, a.get());
1191 +    }}
1192 +
1193 +    /**
1194 +     * runAsync completes after running Runnable
1195 +     */
1196 +    public void testRunAsync_normalCompletion() {
1197 +        ExecutionMode[] executionModes = {
1198 +            ExecutionMode.ASYNC,
1199 +            ExecutionMode.EXECUTOR,
1200 +        };
1201 +        for (ExecutionMode m : executionModes)
1202 +    {
1203 +        final Noop r = new Noop(m);
1204 +        final CompletableFuture<Void> f = m.runAsync(r);
1205 +        assertNull(f.join());
1206 +        checkCompletedNormally(f, null);
1207 +        r.assertInvoked();
1208 +    }}
1209 +
1210 +    /**
1211 +     * failing runAsync completes exceptionally after running Runnable
1212 +     */
1213 +    public void testRunAsync_exceptionalCompletion() {
1214 +        ExecutionMode[] executionModes = {
1215 +            ExecutionMode.ASYNC,
1216 +            ExecutionMode.EXECUTOR,
1217 +        };
1218 +        for (ExecutionMode m : executionModes)
1219 +    {
1220 +        final FailingRunnable r = new FailingRunnable(m);
1221 +        final CompletableFuture<Void> f = m.runAsync(r);
1222 +        checkCompletedWithWrappedCFException(f);
1223 +        r.assertInvoked();
1224 +    }}
1225 +
1226 +    /**
1227 +     * supplyAsync completes with result of supplier
1228 +     */
1229 +    public void testSupplyAsync_normalCompletion() {
1230 +        ExecutionMode[] executionModes = {
1231 +            ExecutionMode.ASYNC,
1232 +            ExecutionMode.EXECUTOR,
1233 +        };
1234 +        for (ExecutionMode m : executionModes)
1235 +        for (Integer v1 : new Integer[] { 1, null })
1236 +    {
1237 +        final IntegerSupplier r = new IntegerSupplier(m, v1);
1238 +        final CompletableFuture<Integer> f = m.supplyAsync(r);
1239 +        assertSame(v1, f.join());
1240 +        checkCompletedNormally(f, v1);
1241 +        r.assertInvoked();
1242 +    }}
1243 +
1244 +    /**
1245 +     * Failing supplyAsync completes exceptionally
1246 +     */
1247 +    public void testSupplyAsync_exceptionalCompletion() {
1248 +        ExecutionMode[] executionModes = {
1249 +            ExecutionMode.ASYNC,
1250 +            ExecutionMode.EXECUTOR,
1251 +        };
1252 +        for (ExecutionMode m : executionModes)
1253 +    {
1254 +        FailingSupplier r = new FailingSupplier(m);
1255 +        CompletableFuture<Integer> f = m.supplyAsync(r);
1256 +        checkCompletedWithWrappedCFException(f);
1257 +        r.assertInvoked();
1258 +    }}
1259 +
1260 +    // seq completion methods
1261 +
1262 +    /**
1263 +     * thenRun result completes normally after normal completion of source
1264 +     */
1265 +    public void testThenRun_normalCompletion() {
1266 +        for (ExecutionMode m : ExecutionMode.values())
1267 +        for (boolean createIncomplete : new boolean[] { true, false })
1268 +        for (Integer v1 : new Integer[] { 1, null })
1269 +    {
1270 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1271 +        final Noop r = new Noop(m);
1272 +        if (!createIncomplete) assertTrue(f.complete(v1));
1273 +        final CompletableFuture<Void> g = m.thenRun(f, r);
1274 +        if (createIncomplete) {
1275 +            checkIncomplete(g);
1276 +            assertTrue(f.complete(v1));
1277 +        }
1278 +
1279 +        checkCompletedNormally(g, null);
1280 +        checkCompletedNormally(f, v1);
1281 +        r.assertInvoked();
1282 +    }}
1283 +
1284 +    /**
1285 +     * thenRun result completes exceptionally after exceptional
1286 +     * completion of source
1287 +     */
1288 +    public void testThenRun_exceptionalCompletion() {
1289 +        for (ExecutionMode m : ExecutionMode.values())
1290 +        for (boolean createIncomplete : new boolean[] { true, false })
1291 +    {
1292 +        final CFException ex = new CFException();
1293 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1294 +        final Noop r = new Noop(m);
1295 +        if (!createIncomplete) f.completeExceptionally(ex);
1296 +        final CompletableFuture<Void> g = m.thenRun(f, r);
1297 +        if (createIncomplete) {
1298 +            checkIncomplete(g);
1299 +            f.completeExceptionally(ex);
1300 +        }
1301 +
1302 +        checkCompletedWithWrappedException(g, ex);
1303 +        checkCompletedExceptionally(f, ex);
1304 +        r.assertNotInvoked();
1305 +    }}
1306 +
1307 +    /**
1308 +     * thenRun result completes exceptionally if source cancelled
1309 +     */
1310 +    public void testThenRun_sourceCancelled() {
1311 +        for (ExecutionMode m : ExecutionMode.values())
1312 +        for (boolean createIncomplete : new boolean[] { true, false })
1313 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1314 +    {
1315 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1316 +        final Noop r = new Noop(m);
1317 +        if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
1318 +        final CompletableFuture<Void> g = m.thenRun(f, r);
1319 +        if (createIncomplete) {
1320 +            checkIncomplete(g);
1321 +            assertTrue(f.cancel(mayInterruptIfRunning));
1322 +        }
1323 +
1324 +        checkCompletedWithWrappedCancellationException(g);
1325 +        checkCancelled(f);
1326 +        r.assertNotInvoked();
1327 +    }}
1328 +
1329 +    /**
1330 +     * thenRun result completes exceptionally if action does
1331 +     */
1332 +    public void testThenRun_actionFailed() {
1333 +        for (ExecutionMode m : ExecutionMode.values())
1334 +        for (boolean createIncomplete : new boolean[] { true, false })
1335 +        for (Integer v1 : new Integer[] { 1, null })
1336 +    {
1337 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1338 +        final FailingRunnable r = new FailingRunnable(m);
1339 +        if (!createIncomplete) assertTrue(f.complete(v1));
1340 +        final CompletableFuture<Void> g = m.thenRun(f, r);
1341 +        if (createIncomplete) {
1342 +            checkIncomplete(g);
1343 +            assertTrue(f.complete(v1));
1344 +        }
1345 +
1346 +        checkCompletedWithWrappedCFException(g);
1347 +        checkCompletedNormally(f, v1);
1348 +    }}
1349 +
1350 +    /**
1351 +     * thenApply result completes normally after normal completion of source
1352 +     */
1353 +    public void testThenApply_normalCompletion() {
1354 +        for (ExecutionMode m : ExecutionMode.values())
1355 +        for (boolean createIncomplete : new boolean[] { true, false })
1356 +        for (Integer v1 : new Integer[] { 1, null })
1357 +    {
1358 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1359 +        final IncFunction r = new IncFunction(m);
1360 +        if (!createIncomplete) assertTrue(f.complete(v1));
1361 +        final CompletableFuture<Integer> g = m.thenApply(f, r);
1362 +        if (createIncomplete) {
1363 +            checkIncomplete(g);
1364 +            assertTrue(f.complete(v1));
1365 +        }
1366 +
1367 +        checkCompletedNormally(g, inc(v1));
1368 +        checkCompletedNormally(f, v1);
1369 +        r.assertValue(inc(v1));
1370 +    }}
1371 +
1372 +    /**
1373 +     * thenApply result completes exceptionally after exceptional
1374 +     * completion of source
1375 +     */
1376 +    public void testThenApply_exceptionalCompletion() {
1377 +        for (ExecutionMode m : ExecutionMode.values())
1378 +        for (boolean createIncomplete : new boolean[] { true, false })
1379 +    {
1380 +        final CFException ex = new CFException();
1381 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1382 +        final IncFunction r = new IncFunction(m);
1383 +        if (!createIncomplete) f.completeExceptionally(ex);
1384 +        final CompletableFuture<Integer> g = m.thenApply(f, r);
1385 +        if (createIncomplete) {
1386 +            checkIncomplete(g);
1387 +            f.completeExceptionally(ex);
1388 +        }
1389 +
1390 +        checkCompletedWithWrappedException(g, ex);
1391 +        checkCompletedExceptionally(f, ex);
1392 +        r.assertNotInvoked();
1393 +    }}
1394 +
1395 +    /**
1396 +     * thenApply result completes exceptionally if source cancelled
1397 +     */
1398 +    public void testThenApply_sourceCancelled() {
1399 +        for (ExecutionMode m : ExecutionMode.values())
1400 +        for (boolean createIncomplete : new boolean[] { true, false })
1401 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1402 +    {
1403 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1404 +        final IncFunction r = new IncFunction(m);
1405 +        if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
1406 +        final CompletableFuture<Integer> g = m.thenApply(f, r);
1407 +        if (createIncomplete) {
1408 +            checkIncomplete(g);
1409 +            assertTrue(f.cancel(mayInterruptIfRunning));
1410 +        }
1411 +
1412 +        checkCompletedWithWrappedCancellationException(g);
1413 +        checkCancelled(f);
1414 +        r.assertNotInvoked();
1415 +    }}
1416 +
1417 +    /**
1418 +     * thenApply result completes exceptionally if action does
1419 +     */
1420 +    public void testThenApply_actionFailed() {
1421 +        for (ExecutionMode m : ExecutionMode.values())
1422 +        for (boolean createIncomplete : new boolean[] { true, false })
1423 +        for (Integer v1 : new Integer[] { 1, null })
1424 +    {
1425 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1426 +        final FailingFunction r = new FailingFunction(m);
1427 +        if (!createIncomplete) assertTrue(f.complete(v1));
1428 +        final CompletableFuture<Integer> g = m.thenApply(f, r);
1429 +        if (createIncomplete) {
1430 +            checkIncomplete(g);
1431 +            assertTrue(f.complete(v1));
1432 +        }
1433 +
1434 +        checkCompletedWithWrappedCFException(g);
1435 +        checkCompletedNormally(f, v1);
1436 +    }}
1437 +
1438 +    /**
1439 +     * thenAccept result completes normally after normal completion of source
1440 +     */
1441 +    public void testThenAccept_normalCompletion() {
1442 +        for (ExecutionMode m : ExecutionMode.values())
1443 +        for (boolean createIncomplete : new boolean[] { true, false })
1444 +        for (Integer v1 : new Integer[] { 1, null })
1445 +    {
1446 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1447 +        final NoopConsumer r = new NoopConsumer(m);
1448 +        if (!createIncomplete) assertTrue(f.complete(v1));
1449 +        final CompletableFuture<Void> g = m.thenAccept(f, r);
1450 +        if (createIncomplete) {
1451 +            checkIncomplete(g);
1452 +            assertTrue(f.complete(v1));
1453 +        }
1454 +
1455 +        checkCompletedNormally(g, null);
1456 +        r.assertValue(v1);
1457 +        checkCompletedNormally(f, v1);
1458 +    }}
1459 +
1460 +    /**
1461 +     * thenAccept result completes exceptionally after exceptional
1462 +     * completion of source
1463 +     */
1464 +    public void testThenAccept_exceptionalCompletion() {
1465 +        for (ExecutionMode m : ExecutionMode.values())
1466 +        for (boolean createIncomplete : new boolean[] { true, false })
1467 +    {
1468 +        final CFException ex = new CFException();
1469 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1470 +        final NoopConsumer r = new NoopConsumer(m);
1471 +        if (!createIncomplete) f.completeExceptionally(ex);
1472 +        final CompletableFuture<Void> g = m.thenAccept(f, r);
1473 +        if (createIncomplete) {
1474 +            checkIncomplete(g);
1475 +            f.completeExceptionally(ex);
1476 +        }
1477 +
1478 +        checkCompletedWithWrappedException(g, ex);
1479 +        checkCompletedExceptionally(f, ex);
1480 +        r.assertNotInvoked();
1481 +    }}
1482 +
1483 +    /**
1484 +     * thenAccept result completes exceptionally if source cancelled
1485 +     */
1486 +    public void testThenAccept_sourceCancelled() {
1487 +        for (ExecutionMode m : ExecutionMode.values())
1488 +        for (boolean createIncomplete : new boolean[] { true, false })
1489 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1490 +    {
1491 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1492 +        final NoopConsumer r = new NoopConsumer(m);
1493 +        if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
1494 +        final CompletableFuture<Void> g = m.thenAccept(f, r);
1495 +        if (createIncomplete) {
1496 +            checkIncomplete(g);
1497 +            assertTrue(f.cancel(mayInterruptIfRunning));
1498 +        }
1499 +
1500 +        checkCompletedWithWrappedCancellationException(g);
1501 +        checkCancelled(f);
1502 +        r.assertNotInvoked();
1503 +    }}
1504 +
1505 +    /**
1506 +     * thenAccept result completes exceptionally if action does
1507 +     */
1508 +    public void testThenAccept_actionFailed() {
1509 +        for (ExecutionMode m : ExecutionMode.values())
1510 +        for (boolean createIncomplete : new boolean[] { true, false })
1511 +        for (Integer v1 : new Integer[] { 1, null })
1512 +    {
1513 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1514 +        final FailingConsumer r = new FailingConsumer(m);
1515 +        if (!createIncomplete) f.complete(v1);
1516 +        final CompletableFuture<Void> g = m.thenAccept(f, r);
1517 +        if (createIncomplete) {
1518 +            checkIncomplete(g);
1519 +            f.complete(v1);
1520 +        }
1521 +
1522 +        checkCompletedWithWrappedCFException(g);
1523 +        checkCompletedNormally(f, v1);
1524 +    }}
1525 +
1526 +    /**
1527 +     * thenCombine result completes normally after normal completion
1528 +     * of sources
1529 +     */
1530 +    public void testThenCombine_normalCompletion() {
1531 +        for (ExecutionMode m : ExecutionMode.values())
1532 +        for (boolean fFirst : new boolean[] { true, false })
1533 +        for (Integer v1 : new Integer[] { 1, null })
1534 +        for (Integer v2 : new Integer[] { 2, null })
1535 +    {
1536 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1537 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1538 +        final SubtractFunction r1 = new SubtractFunction(m);
1539 +        final SubtractFunction r2 = new SubtractFunction(m);
1540 +        final SubtractFunction r3 = new SubtractFunction(m);
1541 +
1542 +        final CompletableFuture<Integer> fst =  fFirst ? f : g;
1543 +        final CompletableFuture<Integer> snd = !fFirst ? f : g;
1544 +        final Integer w1 =  fFirst ? v1 : v2;
1545 +        final Integer w2 = !fFirst ? v1 : v2;
1546 +
1547 +        final CompletableFuture<Integer> h1 = m.thenCombine(f, g, r1);
1548 +        assertTrue(fst.complete(w1));
1549 +        final CompletableFuture<Integer> h2 = m.thenCombine(f, g, r2);
1550 +        checkIncomplete(h1);
1551 +        checkIncomplete(h2);
1552 +        r1.assertNotInvoked();
1553 +        r2.assertNotInvoked();
1554 +        assertTrue(snd.complete(w2));
1555 +        final CompletableFuture<Integer> h3 = m.thenCombine(f, g, r3);
1556 +
1557 +        checkCompletedNormally(h1, subtract(v1, v2));
1558 +        checkCompletedNormally(h2, subtract(v1, v2));
1559 +        checkCompletedNormally(h3, subtract(v1, v2));
1560 +        r1.assertValue(subtract(v1, v2));
1561 +        r2.assertValue(subtract(v1, v2));
1562 +        r3.assertValue(subtract(v1, v2));
1563 +        checkCompletedNormally(f, v1);
1564 +        checkCompletedNormally(g, v2);
1565 +    }}
1566 +
1567 +    /**
1568 +     * thenCombine result completes exceptionally after exceptional
1569 +     * completion of either source
1570 +     */
1571 +    public void testThenCombine_exceptionalCompletion() throws Throwable {
1572 +        for (ExecutionMode m : ExecutionMode.values())
1573 +        for (boolean fFirst : new boolean[] { true, false })
1574 +        for (boolean failFirst : new boolean[] { true, false })
1575 +        for (Integer v1 : new Integer[] { 1, null })
1576 +    {
1577 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1578 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1579 +        final CFException ex = new CFException();
1580 +        final SubtractFunction r1 = new SubtractFunction(m);
1581 +        final SubtractFunction r2 = new SubtractFunction(m);
1582 +        final SubtractFunction r3 = new SubtractFunction(m);
1583 +
1584 +        final CompletableFuture<Integer> fst =  fFirst ? f : g;
1585 +        final CompletableFuture<Integer> snd = !fFirst ? f : g;
1586 +        final Callable<Boolean> complete1 = failFirst ?
1587 +            () -> fst.completeExceptionally(ex) :
1588 +            () -> fst.complete(v1);
1589 +        final Callable<Boolean> complete2 = failFirst ?
1590 +            () -> snd.complete(v1) :
1591 +            () -> snd.completeExceptionally(ex);
1592 +
1593 +        final CompletableFuture<Integer> h1 = m.thenCombine(f, g, r1);
1594 +        assertTrue(complete1.call());
1595 +        final CompletableFuture<Integer> h2 = m.thenCombine(f, g, r2);
1596 +        checkIncomplete(h1);
1597 +        checkIncomplete(h2);
1598 +        assertTrue(complete2.call());
1599 +        final CompletableFuture<Integer> h3 = m.thenCombine(f, g, r3);
1600 +
1601 +        checkCompletedWithWrappedException(h1, ex);
1602 +        checkCompletedWithWrappedException(h2, ex);
1603 +        checkCompletedWithWrappedException(h3, ex);
1604 +        r1.assertNotInvoked();
1605 +        r2.assertNotInvoked();
1606 +        r3.assertNotInvoked();
1607 +        checkCompletedNormally(failFirst ? snd : fst, v1);
1608 +        checkCompletedExceptionally(failFirst ? fst : snd, ex);
1609 +    }}
1610 +
1611 +    /**
1612 +     * thenCombine result completes exceptionally if either source cancelled
1613 +     */
1614 +    public void testThenCombine_sourceCancelled() throws Throwable {
1615 +        for (ExecutionMode m : ExecutionMode.values())
1616 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1617 +        for (boolean fFirst : new boolean[] { true, false })
1618 +        for (boolean failFirst : new boolean[] { true, false })
1619 +        for (Integer v1 : new Integer[] { 1, null })
1620 +    {
1621 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1622 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1623 +        final SubtractFunction r1 = new SubtractFunction(m);
1624 +        final SubtractFunction r2 = new SubtractFunction(m);
1625 +        final SubtractFunction r3 = new SubtractFunction(m);
1626 +
1627 +        final CompletableFuture<Integer> fst =  fFirst ? f : g;
1628 +        final CompletableFuture<Integer> snd = !fFirst ? f : g;
1629 +        final Callable<Boolean> complete1 = failFirst ?
1630 +            () -> fst.cancel(mayInterruptIfRunning) :
1631 +            () -> fst.complete(v1);
1632 +        final Callable<Boolean> complete2 = failFirst ?
1633 +            () -> snd.complete(v1) :
1634 +            () -> snd.cancel(mayInterruptIfRunning);
1635 +
1636 +        final CompletableFuture<Integer> h1 = m.thenCombine(f, g, r1);
1637 +        assertTrue(complete1.call());
1638 +        final CompletableFuture<Integer> h2 = m.thenCombine(f, g, r2);
1639 +        checkIncomplete(h1);
1640 +        checkIncomplete(h2);
1641 +        assertTrue(complete2.call());
1642 +        final CompletableFuture<Integer> h3 = m.thenCombine(f, g, r3);
1643 +
1644 +        checkCompletedWithWrappedCancellationException(h1);
1645 +        checkCompletedWithWrappedCancellationException(h2);
1646 +        checkCompletedWithWrappedCancellationException(h3);
1647 +        r1.assertNotInvoked();
1648 +        r2.assertNotInvoked();
1649 +        r3.assertNotInvoked();
1650 +        checkCompletedNormally(failFirst ? snd : fst, v1);
1651 +        checkCancelled(failFirst ? fst : snd);
1652 +    }}
1653 +
1654 +    /**
1655 +     * thenCombine result completes exceptionally if action does
1656 +     */
1657 +    public void testThenCombine_actionFailed() {
1658 +        for (ExecutionMode m : ExecutionMode.values())
1659 +        for (boolean fFirst : new boolean[] { true, false })
1660 +        for (Integer v1 : new Integer[] { 1, null })
1661 +        for (Integer v2 : new Integer[] { 2, null })
1662 +    {
1663 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1664 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1665 +        final FailingBiFunction r1 = new FailingBiFunction(m);
1666 +        final FailingBiFunction r2 = new FailingBiFunction(m);
1667 +        final FailingBiFunction r3 = new FailingBiFunction(m);
1668 +
1669 +        final CompletableFuture<Integer> fst =  fFirst ? f : g;
1670 +        final CompletableFuture<Integer> snd = !fFirst ? f : g;
1671 +        final Integer w1 =  fFirst ? v1 : v2;
1672 +        final Integer w2 = !fFirst ? v1 : v2;
1673 +
1674 +        final CompletableFuture<Integer> h1 = m.thenCombine(f, g, r1);
1675 +        assertTrue(fst.complete(w1));
1676 +        final CompletableFuture<Integer> h2 = m.thenCombine(f, g, r2);
1677 +        assertTrue(snd.complete(w2));
1678 +        final CompletableFuture<Integer> h3 = m.thenCombine(f, g, r3);
1679 +
1680 +        checkCompletedWithWrappedCFException(h1);
1681 +        checkCompletedWithWrappedCFException(h2);
1682 +        checkCompletedWithWrappedCFException(h3);
1683 +        checkCompletedNormally(f, v1);
1684 +        checkCompletedNormally(g, v2);
1685 +    }}
1686 +
1687 +    /**
1688 +     * thenAcceptBoth result completes normally after normal
1689 +     * completion of sources
1690 +     */
1691 +    public void testThenAcceptBoth_normalCompletion() {
1692 +        for (ExecutionMode m : ExecutionMode.values())
1693 +        for (boolean fFirst : new boolean[] { true, false })
1694 +        for (Integer v1 : new Integer[] { 1, null })
1695 +        for (Integer v2 : new Integer[] { 2, null })
1696 +    {
1697 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1698 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1699 +        final SubtractAction r1 = new SubtractAction(m);
1700 +        final SubtractAction r2 = new SubtractAction(m);
1701 +        final SubtractAction r3 = new SubtractAction(m);
1702 +
1703 +        final CompletableFuture<Integer> fst =  fFirst ? f : g;
1704 +        final CompletableFuture<Integer> snd = !fFirst ? f : g;
1705 +        final Integer w1 =  fFirst ? v1 : v2;
1706 +        final Integer w2 = !fFirst ? v1 : v2;
1707 +
1708 +        final CompletableFuture<Void> h1 = m.thenAcceptBoth(f, g, r1);
1709 +        assertTrue(fst.complete(w1));
1710 +        final CompletableFuture<Void> h2 = m.thenAcceptBoth(f, g, r2);
1711 +        checkIncomplete(h1);
1712 +        checkIncomplete(h2);
1713 +        r1.assertNotInvoked();
1714 +        r2.assertNotInvoked();
1715 +        assertTrue(snd.complete(w2));
1716 +        final CompletableFuture<Void> h3 = m.thenAcceptBoth(f, g, r3);
1717 +
1718 +        checkCompletedNormally(h1, null);
1719 +        checkCompletedNormally(h2, null);
1720 +        checkCompletedNormally(h3, null);
1721 +        r1.assertValue(subtract(v1, v2));
1722 +        r2.assertValue(subtract(v1, v2));
1723 +        r3.assertValue(subtract(v1, v2));
1724 +        checkCompletedNormally(f, v1);
1725 +        checkCompletedNormally(g, v2);
1726 +    }}
1727 +
1728 +    /**
1729 +     * thenAcceptBoth result completes exceptionally after exceptional
1730 +     * completion of either source
1731 +     */
1732 +    public void testThenAcceptBoth_exceptionalCompletion() throws Throwable {
1733 +        for (ExecutionMode m : ExecutionMode.values())
1734 +        for (boolean fFirst : new boolean[] { true, false })
1735 +        for (boolean failFirst : new boolean[] { true, false })
1736 +        for (Integer v1 : new Integer[] { 1, null })
1737 +    {
1738 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1739 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1740 +        final CFException ex = new CFException();
1741 +        final SubtractAction r1 = new SubtractAction(m);
1742 +        final SubtractAction r2 = new SubtractAction(m);
1743 +        final SubtractAction r3 = new SubtractAction(m);
1744 +
1745 +        final CompletableFuture<Integer> fst =  fFirst ? f : g;
1746 +        final CompletableFuture<Integer> snd = !fFirst ? f : g;
1747 +        final Callable<Boolean> complete1 = failFirst ?
1748 +            () -> fst.completeExceptionally(ex) :
1749 +            () -> fst.complete(v1);
1750 +        final Callable<Boolean> complete2 = failFirst ?
1751 +            () -> snd.complete(v1) :
1752 +            () -> snd.completeExceptionally(ex);
1753 +
1754 +        final CompletableFuture<Void> h1 = m.thenAcceptBoth(f, g, r1);
1755 +        assertTrue(complete1.call());
1756 +        final CompletableFuture<Void> h2 = m.thenAcceptBoth(f, g, r2);
1757 +        checkIncomplete(h1);
1758 +        checkIncomplete(h2);
1759 +        assertTrue(complete2.call());
1760 +        final CompletableFuture<Void> h3 = m.thenAcceptBoth(f, g, r3);
1761 +
1762 +        checkCompletedWithWrappedException(h1, ex);
1763 +        checkCompletedWithWrappedException(h2, ex);
1764 +        checkCompletedWithWrappedException(h3, ex);
1765 +        r1.assertNotInvoked();
1766 +        r2.assertNotInvoked();
1767 +        r3.assertNotInvoked();
1768 +        checkCompletedNormally(failFirst ? snd : fst, v1);
1769 +        checkCompletedExceptionally(failFirst ? fst : snd, ex);
1770 +    }}
1771 +
1772 +    /**
1773 +     * thenAcceptBoth result completes exceptionally if either source cancelled
1774 +     */
1775 +    public void testThenAcceptBoth_sourceCancelled() throws Throwable {
1776 +        for (ExecutionMode m : ExecutionMode.values())
1777 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1778 +        for (boolean fFirst : new boolean[] { true, false })
1779 +        for (boolean failFirst : new boolean[] { true, false })
1780 +        for (Integer v1 : new Integer[] { 1, null })
1781 +    {
1782 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1783 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1784 +        final SubtractAction r1 = new SubtractAction(m);
1785 +        final SubtractAction r2 = new SubtractAction(m);
1786 +        final SubtractAction r3 = new SubtractAction(m);
1787 +
1788 +        final CompletableFuture<Integer> fst =  fFirst ? f : g;
1789 +        final CompletableFuture<Integer> snd = !fFirst ? f : g;
1790 +        final Callable<Boolean> complete1 = failFirst ?
1791 +            () -> fst.cancel(mayInterruptIfRunning) :
1792 +            () -> fst.complete(v1);
1793 +        final Callable<Boolean> complete2 = failFirst ?
1794 +            () -> snd.complete(v1) :
1795 +            () -> snd.cancel(mayInterruptIfRunning);
1796 +
1797 +        final CompletableFuture<Void> h1 = m.thenAcceptBoth(f, g, r1);
1798 +        assertTrue(complete1.call());
1799 +        final CompletableFuture<Void> h2 = m.thenAcceptBoth(f, g, r2);
1800 +        checkIncomplete(h1);
1801 +        checkIncomplete(h2);
1802 +        assertTrue(complete2.call());
1803 +        final CompletableFuture<Void> h3 = m.thenAcceptBoth(f, g, r3);
1804 +
1805 +        checkCompletedWithWrappedCancellationException(h1);
1806 +        checkCompletedWithWrappedCancellationException(h2);
1807 +        checkCompletedWithWrappedCancellationException(h3);
1808 +        r1.assertNotInvoked();
1809 +        r2.assertNotInvoked();
1810 +        r3.assertNotInvoked();
1811 +        checkCompletedNormally(failFirst ? snd : fst, v1);
1812 +        checkCancelled(failFirst ? fst : snd);
1813 +    }}
1814 +
1815 +    /**
1816 +     * thenAcceptBoth result completes exceptionally if action does
1817 +     */
1818 +    public void testThenAcceptBoth_actionFailed() {
1819 +        for (ExecutionMode m : ExecutionMode.values())
1820 +        for (boolean fFirst : new boolean[] { true, false })
1821 +        for (Integer v1 : new Integer[] { 1, null })
1822 +        for (Integer v2 : new Integer[] { 2, null })
1823 +    {
1824 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1825 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1826 +        final FailingBiConsumer r1 = new FailingBiConsumer(m);
1827 +        final FailingBiConsumer r2 = new FailingBiConsumer(m);
1828 +        final FailingBiConsumer r3 = new FailingBiConsumer(m);
1829 +
1830 +        final CompletableFuture<Integer> fst =  fFirst ? f : g;
1831 +        final CompletableFuture<Integer> snd = !fFirst ? f : g;
1832 +        final Integer w1 =  fFirst ? v1 : v2;
1833 +        final Integer w2 = !fFirst ? v1 : v2;
1834 +
1835 +        final CompletableFuture<Void> h1 = m.thenAcceptBoth(f, g, r1);
1836 +        assertTrue(fst.complete(w1));
1837 +        final CompletableFuture<Void> h2 = m.thenAcceptBoth(f, g, r2);
1838 +        assertTrue(snd.complete(w2));
1839 +        final CompletableFuture<Void> h3 = m.thenAcceptBoth(f, g, r3);
1840 +
1841 +        checkCompletedWithWrappedCFException(h1);
1842 +        checkCompletedWithWrappedCFException(h2);
1843 +        checkCompletedWithWrappedCFException(h3);
1844 +        checkCompletedNormally(f, v1);
1845 +        checkCompletedNormally(g, v2);
1846 +    }}
1847 +
1848 +    /**
1849 +     * runAfterBoth result completes normally after normal
1850 +     * completion of sources
1851 +     */
1852 +    public void testRunAfterBoth_normalCompletion() {
1853 +        for (ExecutionMode m : ExecutionMode.values())
1854 +        for (boolean createIncomplete : new boolean[] { true, false })
1855 +        for (boolean fFirst : new boolean[] { true, false })
1856 +        for (Integer v1 : new Integer[] { 1, null })
1857 +        for (Integer v2 : new Integer[] { 2, null })
1858 +    {
1859 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1860 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1861 +        final Noop r = new Noop(m);
1862 +
1863 +        assertTrue(fFirst ? f.complete(v1) : g.complete(v2));
1864 +        if (!createIncomplete)
1865 +            assertTrue(!fFirst ? f.complete(v1) : g.complete(v2));
1866 +        final CompletableFuture<Void> h = m.runAfterBoth(f, g, r);
1867 +        if (createIncomplete) {
1868 +            checkIncomplete(h);
1869 +            r.assertNotInvoked();
1870 +            assertTrue(!fFirst ? f.complete(v1) : g.complete(v2));
1871 +        }
1872 +
1873 +        checkCompletedNormally(h, null);
1874 +        r.assertInvoked();
1875 +        checkCompletedNormally(f, v1);
1876 +        checkCompletedNormally(g, v2);
1877 +    }}
1878 +
1879 +    /**
1880 +     * runAfterBoth result completes exceptionally after exceptional
1881 +     * completion of either source
1882 +     */
1883 +    public void testRunAfterBoth_exceptionalCompletion() {
1884 +        for (ExecutionMode m : ExecutionMode.values())
1885 +        for (boolean createIncomplete : new boolean[] { true, false })
1886 +        for (boolean fFirst : new boolean[] { true, false })
1887 +        for (Integer v1 : new Integer[] { 1, null })
1888 +    {
1889 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1890 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1891 +        final CFException ex = new CFException();
1892 +        final Noop r = new Noop(m);
1893 +
1894 +        assertTrue((fFirst ? f : g).complete(v1));
1895 +        if (!createIncomplete)
1896 +            assertTrue((!fFirst ? f : g).completeExceptionally(ex));
1897 +        final CompletableFuture<Void> h = m.runAfterBoth(f, g, r);
1898 +        if (createIncomplete) {
1899 +            checkIncomplete(h);
1900 +            assertTrue((!fFirst ? f : g).completeExceptionally(ex));
1901 +        }
1902 +
1903 +        checkCompletedWithWrappedException(h, ex);
1904 +        r.assertNotInvoked();
1905 +        checkCompletedNormally(fFirst ? f : g, v1);
1906 +        checkCompletedExceptionally(!fFirst ? f : g, ex);
1907 +    }}
1908 +
1909 +    /**
1910 +     * runAfterBoth result completes exceptionally if either source cancelled
1911 +     */
1912 +    public void testRunAfterBoth_sourceCancelled() {
1913 +        for (ExecutionMode m : ExecutionMode.values())
1914 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1915 +        for (boolean createIncomplete : new boolean[] { true, false })
1916 +        for (boolean fFirst : new boolean[] { true, false })
1917 +        for (Integer v1 : new Integer[] { 1, null })
1918 +    {
1919 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1920 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1921 +        final Noop r = new Noop(m);
1922 +
1923 +        assertTrue((fFirst ? f : g).complete(v1));
1924 +        if (!createIncomplete)
1925 +            assertTrue((!fFirst ? f : g).cancel(mayInterruptIfRunning));
1926 +        final CompletableFuture<Void> h = m.runAfterBoth(f, g, r);
1927 +        if (createIncomplete) {
1928 +            checkIncomplete(h);
1929 +            assertTrue((!fFirst ? f : g).cancel(mayInterruptIfRunning));
1930 +        }
1931 +
1932 +        checkCompletedWithWrappedCancellationException(h);
1933 +        checkCancelled(!fFirst ? f : g);
1934 +        r.assertNotInvoked();
1935 +        checkCompletedNormally(fFirst ? f : g, v1);
1936 +    }}
1937 +
1938 +    /**
1939 +     * runAfterBoth result completes exceptionally if action does
1940 +     */
1941 +    public void testRunAfterBoth_actionFailed() {
1942 +        for (ExecutionMode m : ExecutionMode.values())
1943 +        for (boolean fFirst : new boolean[] { true, false })
1944 +        for (Integer v1 : new Integer[] { 1, null })
1945 +        for (Integer v2 : new Integer[] { 2, null })
1946 +    {
1947 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1948 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1949 +        final FailingRunnable r1 = new FailingRunnable(m);
1950 +        final FailingRunnable r2 = new FailingRunnable(m);
1951 +
1952 +        CompletableFuture<Void> h1 = m.runAfterBoth(f, g, r1);
1953 +        assertTrue(fFirst ? f.complete(v1) : g.complete(v2));
1954 +        assertTrue(!fFirst ? f.complete(v1) : g.complete(v2));
1955 +        CompletableFuture<Void> h2 = m.runAfterBoth(f, g, r2);
1956 +
1957 +        checkCompletedWithWrappedCFException(h1);
1958 +        checkCompletedWithWrappedCFException(h2);
1959 +        checkCompletedNormally(f, v1);
1960 +        checkCompletedNormally(g, v2);
1961 +    }}
1962 +
1963 +    /**
1964 +     * applyToEither result completes normally after normal completion
1965 +     * of either source
1966 +     */
1967 +    public void testApplyToEither_normalCompletion() {
1968 +        for (ExecutionMode m : ExecutionMode.values())
1969 +        for (Integer v1 : new Integer[] { 1, null })
1970 +        for (Integer v2 : new Integer[] { 2, null })
1971 +    {
1972 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1973 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1974 +        final IncFunction[] rs = new IncFunction[6];
1975 +        for (int i = 0; i < rs.length; i++) rs[i] = new IncFunction(m);
1976 +
1977 +        final CompletableFuture<Integer> h0 = m.applyToEither(f, g, rs[0]);
1978 +        final CompletableFuture<Integer> h1 = m.applyToEither(g, f, rs[1]);
1979 +        checkIncomplete(h0);
1980 +        checkIncomplete(h1);
1981 +        rs[0].assertNotInvoked();
1982 +        rs[1].assertNotInvoked();
1983 +        f.complete(v1);
1984 +        checkCompletedNormally(h0, inc(v1));
1985 +        checkCompletedNormally(h1, inc(v1));
1986 +        final CompletableFuture<Integer> h2 = m.applyToEither(f, g, rs[2]);
1987 +        final CompletableFuture<Integer> h3 = m.applyToEither(g, f, rs[3]);
1988 +        checkCompletedNormally(h2, inc(v1));
1989 +        checkCompletedNormally(h3, inc(v1));
1990 +        g.complete(v2);
1991 +
1992 +        // unspecified behavior - both source completions available
1993 +        final CompletableFuture<Integer> h4 = m.applyToEither(f, g, rs[4]);
1994 +        final CompletableFuture<Integer> h5 = m.applyToEither(g, f, rs[5]);
1995 +        rs[4].assertValue(h4.join());
1996 +        rs[5].assertValue(h5.join());
1997 +        assertTrue(Objects.equals(inc(v1), h4.join()) ||
1998 +                   Objects.equals(inc(v2), h4.join()));
1999 +        assertTrue(Objects.equals(inc(v1), h5.join()) ||
2000 +                   Objects.equals(inc(v2), h5.join()));
2001 +
2002 +        checkCompletedNormally(f, v1);
2003 +        checkCompletedNormally(g, v2);
2004 +        checkCompletedNormally(h0, inc(v1));
2005 +        checkCompletedNormally(h1, inc(v1));
2006 +        checkCompletedNormally(h2, inc(v1));
2007 +        checkCompletedNormally(h3, inc(v1));
2008 +        for (int i = 0; i < 4; i++) rs[i].assertValue(inc(v1));
2009 +    }}
2010 +
2011 +    /**
2012 +     * applyToEither result completes exceptionally after exceptional
2013 +     * completion of either source
2014 +     */
2015 +    public void testApplyToEither_exceptionalCompletion() {
2016 +        for (ExecutionMode m : ExecutionMode.values())
2017 +        for (Integer v1 : new Integer[] { 1, null })
2018 +    {
2019 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2020 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2021 +        final CFException ex = new CFException();
2022 +        final IncFunction[] rs = new IncFunction[6];
2023 +        for (int i = 0; i < rs.length; i++) rs[i] = new IncFunction(m);
2024 +
2025 +        final CompletableFuture<Integer> h0 = m.applyToEither(f, g, rs[0]);
2026 +        final CompletableFuture<Integer> h1 = m.applyToEither(g, f, rs[1]);
2027 +        checkIncomplete(h0);
2028 +        checkIncomplete(h1);
2029 +        rs[0].assertNotInvoked();
2030 +        rs[1].assertNotInvoked();
2031 +        f.completeExceptionally(ex);
2032 +        checkCompletedWithWrappedException(h0, ex);
2033 +        checkCompletedWithWrappedException(h1, ex);
2034 +        final CompletableFuture<Integer> h2 = m.applyToEither(f, g, rs[2]);
2035 +        final CompletableFuture<Integer> h3 = m.applyToEither(g, f, rs[3]);
2036 +        checkCompletedWithWrappedException(h2, ex);
2037 +        checkCompletedWithWrappedException(h3, ex);
2038 +        g.complete(v1);
2039 +
2040 +        // unspecified behavior - both source completions available
2041 +        final CompletableFuture<Integer> h4 = m.applyToEither(f, g, rs[4]);
2042 +        final CompletableFuture<Integer> h5 = m.applyToEither(g, f, rs[5]);
2043 +        try {
2044 +            assertEquals(inc(v1), h4.join());
2045 +            rs[4].assertValue(inc(v1));
2046 +        } catch (CompletionException ok) {
2047 +            checkCompletedWithWrappedException(h4, ex);
2048 +            rs[4].assertNotInvoked();
2049 +        }
2050 +        try {
2051 +            assertEquals(inc(v1), h5.join());
2052 +            rs[5].assertValue(inc(v1));
2053 +        } catch (CompletionException ok) {
2054 +            checkCompletedWithWrappedException(h5, ex);
2055 +            rs[5].assertNotInvoked();
2056 +        }
2057 +
2058 +        checkCompletedExceptionally(f, ex);
2059 +        checkCompletedNormally(g, v1);
2060 +        checkCompletedWithWrappedException(h0, ex);
2061 +        checkCompletedWithWrappedException(h1, ex);
2062 +        checkCompletedWithWrappedException(h2, ex);
2063 +        checkCompletedWithWrappedException(h3, ex);
2064 +        checkCompletedWithWrappedException(h4, ex);
2065 +        for (int i = 0; i < 4; i++) rs[i].assertNotInvoked();
2066 +    }}
2067 +
2068 +    public void testApplyToEither_exceptionalCompletion2() {
2069 +        for (ExecutionMode m : ExecutionMode.values())
2070 +        for (boolean fFirst : new boolean[] { true, false })
2071 +        for (Integer v1 : new Integer[] { 1, null })
2072 +    {
2073 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2074 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2075 +        final CFException ex = new CFException();
2076 +        final IncFunction[] rs = new IncFunction[6];
2077 +        for (int i = 0; i < rs.length; i++) rs[i] = new IncFunction(m);
2078 +
2079 +        final CompletableFuture<Integer> h0 = m.applyToEither(f, g, rs[0]);
2080 +        final CompletableFuture<Integer> h1 = m.applyToEither(g, f, rs[1]);
2081 +        assertTrue(fFirst ? f.complete(v1) : g.completeExceptionally(ex));
2082 +        assertTrue(!fFirst ? f.complete(v1) : g.completeExceptionally(ex));
2083 +        final CompletableFuture<Integer> h2 = m.applyToEither(f, g, rs[2]);
2084 +        final CompletableFuture<Integer> h3 = m.applyToEither(g, f, rs[3]);
2085 +
2086 +        // unspecified behavior - both source completions available
2087 +        try {
2088 +            assertEquals(inc(v1), h0.join());
2089 +            rs[0].assertValue(inc(v1));
2090 +        } catch (CompletionException ok) {
2091 +            checkCompletedWithWrappedException(h0, ex);
2092 +            rs[0].assertNotInvoked();
2093 +        }
2094 +        try {
2095 +            assertEquals(inc(v1), h1.join());
2096 +            rs[1].assertValue(inc(v1));
2097 +        } catch (CompletionException ok) {
2098 +            checkCompletedWithWrappedException(h1, ex);
2099 +            rs[1].assertNotInvoked();
2100 +        }
2101 +        try {
2102 +            assertEquals(inc(v1), h2.join());
2103 +            rs[2].assertValue(inc(v1));
2104 +        } catch (CompletionException ok) {
2105 +            checkCompletedWithWrappedException(h2, ex);
2106 +            rs[2].assertNotInvoked();
2107 +        }
2108 +        try {
2109 +            assertEquals(inc(v1), h3.join());
2110 +            rs[3].assertValue(inc(v1));
2111 +        } catch (CompletionException ok) {
2112 +            checkCompletedWithWrappedException(h3, ex);
2113 +            rs[3].assertNotInvoked();
2114 +        }
2115 +
2116 +        checkCompletedNormally(f, v1);
2117 +        checkCompletedExceptionally(g, ex);
2118 +    }}
2119 +
2120 +    /**
2121 +     * applyToEither result completes exceptionally if either source cancelled
2122 +     */
2123 +    public void testApplyToEither_sourceCancelled() {
2124 +        for (ExecutionMode m : ExecutionMode.values())
2125 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2126 +        for (Integer v1 : new Integer[] { 1, null })
2127 +    {
2128 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2129 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2130 +        final IncFunction[] rs = new IncFunction[6];
2131 +        for (int i = 0; i < rs.length; i++) rs[i] = new IncFunction(m);
2132 +
2133 +        final CompletableFuture<Integer> h0 = m.applyToEither(f, g, rs[0]);
2134 +        final CompletableFuture<Integer> h1 = m.applyToEither(g, f, rs[1]);
2135 +        checkIncomplete(h0);
2136 +        checkIncomplete(h1);
2137 +        rs[0].assertNotInvoked();
2138 +        rs[1].assertNotInvoked();
2139 +        f.cancel(mayInterruptIfRunning);
2140 +        checkCompletedWithWrappedCancellationException(h0);
2141 +        checkCompletedWithWrappedCancellationException(h1);
2142 +        final CompletableFuture<Integer> h2 = m.applyToEither(f, g, rs[2]);
2143 +        final CompletableFuture<Integer> h3 = m.applyToEither(g, f, rs[3]);
2144 +        checkCompletedWithWrappedCancellationException(h2);
2145 +        checkCompletedWithWrappedCancellationException(h3);
2146 +        g.complete(v1);
2147 +
2148 +        // unspecified behavior - both source completions available
2149 +        final CompletableFuture<Integer> h4 = m.applyToEither(f, g, rs[4]);
2150 +        final CompletableFuture<Integer> h5 = m.applyToEither(g, f, rs[5]);
2151 +        try {
2152 +            assertEquals(inc(v1), h4.join());
2153 +            rs[4].assertValue(inc(v1));
2154 +        } catch (CompletionException ok) {
2155 +            checkCompletedWithWrappedCancellationException(h4);
2156 +            rs[4].assertNotInvoked();
2157 +        }
2158 +        try {
2159 +            assertEquals(inc(v1), h5.join());
2160 +            rs[5].assertValue(inc(v1));
2161 +        } catch (CompletionException ok) {
2162 +            checkCompletedWithWrappedCancellationException(h5);
2163 +            rs[5].assertNotInvoked();
2164 +        }
2165 +
2166 +        checkCancelled(f);
2167 +        checkCompletedNormally(g, v1);
2168 +        checkCompletedWithWrappedCancellationException(h0);
2169 +        checkCompletedWithWrappedCancellationException(h1);
2170 +        checkCompletedWithWrappedCancellationException(h2);
2171 +        checkCompletedWithWrappedCancellationException(h3);
2172 +        for (int i = 0; i < 4; i++) rs[i].assertNotInvoked();
2173 +    }}
2174 +
2175 +    public void testApplyToEither_sourceCancelled2() {
2176 +        for (ExecutionMode m : ExecutionMode.values())
2177 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2178 +        for (boolean fFirst : new boolean[] { true, false })
2179 +        for (Integer v1 : new Integer[] { 1, null })
2180 +    {
2181 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2182 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2183 +        final IncFunction[] rs = new IncFunction[6];
2184 +        for (int i = 0; i < rs.length; i++) rs[i] = new IncFunction(m);
2185 +
2186 +        final CompletableFuture<Integer> h0 = m.applyToEither(f, g, rs[0]);
2187 +        final CompletableFuture<Integer> h1 = m.applyToEither(g, f, rs[1]);
2188 +        assertTrue(fFirst ? f.complete(v1) : g.cancel(mayInterruptIfRunning));
2189 +        assertTrue(!fFirst ? f.complete(v1) : g.cancel(mayInterruptIfRunning));
2190 +        final CompletableFuture<Integer> h2 = m.applyToEither(f, g, rs[2]);
2191 +        final CompletableFuture<Integer> h3 = m.applyToEither(g, f, rs[3]);
2192 +
2193 +        // unspecified behavior - both source completions available
2194 +        try {
2195 +            assertEquals(inc(v1), h0.join());
2196 +            rs[0].assertValue(inc(v1));
2197 +        } catch (CompletionException ok) {
2198 +            checkCompletedWithWrappedCancellationException(h0);
2199 +            rs[0].assertNotInvoked();
2200 +        }
2201 +        try {
2202 +            assertEquals(inc(v1), h1.join());
2203 +            rs[1].assertValue(inc(v1));
2204 +        } catch (CompletionException ok) {
2205 +            checkCompletedWithWrappedCancellationException(h1);
2206 +            rs[1].assertNotInvoked();
2207 +        }
2208 +        try {
2209 +            assertEquals(inc(v1), h2.join());
2210 +            rs[2].assertValue(inc(v1));
2211 +        } catch (CompletionException ok) {
2212 +            checkCompletedWithWrappedCancellationException(h2);
2213 +            rs[2].assertNotInvoked();
2214 +        }
2215 +        try {
2216 +            assertEquals(inc(v1), h3.join());
2217 +            rs[3].assertValue(inc(v1));
2218 +        } catch (CompletionException ok) {
2219 +            checkCompletedWithWrappedCancellationException(h3);
2220 +            rs[3].assertNotInvoked();
2221 +        }
2222 +
2223 +        checkCompletedNormally(f, v1);
2224 +        checkCancelled(g);
2225 +    }}
2226 +
2227 +    /**
2228 +     * applyToEither result completes exceptionally if action does
2229 +     */
2230 +    public void testApplyToEither_actionFailed() {
2231 +        for (ExecutionMode m : ExecutionMode.values())
2232 +        for (Integer v1 : new Integer[] { 1, null })
2233 +        for (Integer v2 : new Integer[] { 2, null })
2234 +    {
2235 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2236 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2237 +        final FailingFunction[] rs = new FailingFunction[6];
2238 +        for (int i = 0; i < rs.length; i++) rs[i] = new FailingFunction(m);
2239 +
2240 +        final CompletableFuture<Integer> h0 = m.applyToEither(f, g, rs[0]);
2241 +        final CompletableFuture<Integer> h1 = m.applyToEither(g, f, rs[1]);
2242 +        f.complete(v1);
2243 +        final CompletableFuture<Integer> h2 = m.applyToEither(f, g, rs[2]);
2244 +        final CompletableFuture<Integer> h3 = m.applyToEither(g, f, rs[3]);
2245 +        checkCompletedWithWrappedCFException(h0);
2246 +        checkCompletedWithWrappedCFException(h1);
2247 +        checkCompletedWithWrappedCFException(h2);
2248 +        checkCompletedWithWrappedCFException(h3);
2249 +        for (int i = 0; i < 4; i++) rs[i].assertValue(v1);
2250 +
2251 +        g.complete(v2);
2252 +
2253 +        // unspecified behavior - both source completions available
2254 +        final CompletableFuture<Integer> h4 = m.applyToEither(f, g, rs[4]);
2255 +        final CompletableFuture<Integer> h5 = m.applyToEither(g, f, rs[5]);
2256 +
2257 +        checkCompletedWithWrappedCFException(h4);
2258 +        assertTrue(Objects.equals(v1, rs[4].value) ||
2259 +                   Objects.equals(v2, rs[4].value));
2260 +        checkCompletedWithWrappedCFException(h5);
2261 +        assertTrue(Objects.equals(v1, rs[5].value) ||
2262 +                   Objects.equals(v2, rs[5].value));
2263 +
2264 +        checkCompletedNormally(f, v1);
2265 +        checkCompletedNormally(g, v2);
2266 +    }}
2267 +
2268 +    /**
2269 +     * acceptEither result completes normally after normal completion
2270 +     * of either source
2271 +     */
2272 +    public void testAcceptEither_normalCompletion() {
2273 +        for (ExecutionMode m : ExecutionMode.values())
2274 +        for (Integer v1 : new Integer[] { 1, null })
2275 +        for (Integer v2 : new Integer[] { 2, null })
2276 +    {
2277 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2278 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2279 +        final NoopConsumer[] rs = new NoopConsumer[6];
2280 +        for (int i = 0; i < rs.length; i++) rs[i] = new NoopConsumer(m);
2281 +
2282 +        final CompletableFuture<Void> h0 = m.acceptEither(f, g, rs[0]);
2283 +        final CompletableFuture<Void> h1 = m.acceptEither(g, f, rs[1]);
2284 +        checkIncomplete(h0);
2285 +        checkIncomplete(h1);
2286 +        rs[0].assertNotInvoked();
2287 +        rs[1].assertNotInvoked();
2288 +        f.complete(v1);
2289 +        checkCompletedNormally(h0, null);
2290 +        checkCompletedNormally(h1, null);
2291 +        rs[0].assertValue(v1);
2292 +        rs[1].assertValue(v1);
2293 +        final CompletableFuture<Void> h2 = m.acceptEither(f, g, rs[2]);
2294 +        final CompletableFuture<Void> h3 = m.acceptEither(g, f, rs[3]);
2295 +        checkCompletedNormally(h2, null);
2296 +        checkCompletedNormally(h3, null);
2297 +        rs[2].assertValue(v1);
2298 +        rs[3].assertValue(v1);
2299 +        g.complete(v2);
2300 +
2301 +        // unspecified behavior - both source completions available
2302 +        final CompletableFuture<Void> h4 = m.acceptEither(f, g, rs[4]);
2303 +        final CompletableFuture<Void> h5 = m.acceptEither(g, f, rs[5]);
2304 +        checkCompletedNormally(h4, null);
2305 +        checkCompletedNormally(h5, null);
2306 +        assertTrue(Objects.equals(v1, rs[4].value) ||
2307 +                   Objects.equals(v2, rs[4].value));
2308 +        assertTrue(Objects.equals(v1, rs[5].value) ||
2309 +                   Objects.equals(v2, rs[5].value));
2310 +
2311 +        checkCompletedNormally(f, v1);
2312 +        checkCompletedNormally(g, v2);
2313 +        checkCompletedNormally(h0, null);
2314 +        checkCompletedNormally(h1, null);
2315 +        checkCompletedNormally(h2, null);
2316 +        checkCompletedNormally(h3, null);
2317 +        for (int i = 0; i < 4; i++) rs[i].assertValue(v1);
2318 +    }}
2319 +
2320 +    /**
2321 +     * acceptEither result completes exceptionally after exceptional
2322 +     * completion of either source
2323 +     */
2324 +    public void testAcceptEither_exceptionalCompletion() {
2325 +        for (ExecutionMode m : ExecutionMode.values())
2326 +        for (Integer v1 : new Integer[] { 1, null })
2327 +    {
2328 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2329 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2330 +        final CFException ex = new CFException();
2331 +        final NoopConsumer[] rs = new NoopConsumer[6];
2332 +        for (int i = 0; i < rs.length; i++) rs[i] = new NoopConsumer(m);
2333 +
2334 +        final CompletableFuture<Void> h0 = m.acceptEither(f, g, rs[0]);
2335 +        final CompletableFuture<Void> h1 = m.acceptEither(g, f, rs[1]);
2336 +        checkIncomplete(h0);
2337 +        checkIncomplete(h1);
2338 +        rs[0].assertNotInvoked();
2339 +        rs[1].assertNotInvoked();
2340 +        f.completeExceptionally(ex);
2341 +        checkCompletedWithWrappedException(h0, ex);
2342 +        checkCompletedWithWrappedException(h1, ex);
2343 +        final CompletableFuture<Void> h2 = m.acceptEither(f, g, rs[2]);
2344 +        final CompletableFuture<Void> h3 = m.acceptEither(g, f, rs[3]);
2345 +        checkCompletedWithWrappedException(h2, ex);
2346 +        checkCompletedWithWrappedException(h3, ex);
2347 +
2348 +        g.complete(v1);
2349 +
2350 +        // unspecified behavior - both source completions available
2351 +        final CompletableFuture<Void> h4 = m.acceptEither(f, g, rs[4]);
2352 +        final CompletableFuture<Void> h5 = m.acceptEither(g, f, rs[5]);
2353 +        try {
2354 +            assertNull(h4.join());
2355 +            rs[4].assertValue(v1);
2356 +        } catch (CompletionException ok) {
2357 +            checkCompletedWithWrappedException(h4, ex);
2358 +            rs[4].assertNotInvoked();
2359 +        }
2360 +        try {
2361 +            assertNull(h5.join());
2362 +            rs[5].assertValue(v1);
2363 +        } catch (CompletionException ok) {
2364 +            checkCompletedWithWrappedException(h5, ex);
2365 +            rs[5].assertNotInvoked();
2366 +        }
2367 +
2368 +        checkCompletedExceptionally(f, ex);
2369 +        checkCompletedNormally(g, v1);
2370 +        checkCompletedWithWrappedException(h0, ex);
2371 +        checkCompletedWithWrappedException(h1, ex);
2372 +        checkCompletedWithWrappedException(h2, ex);
2373 +        checkCompletedWithWrappedException(h3, ex);
2374 +        checkCompletedWithWrappedException(h4, ex);
2375 +        for (int i = 0; i < 4; i++) rs[i].assertNotInvoked();
2376 +    }}
2377 +
2378 +    public void testAcceptEither_exceptionalCompletion2() {
2379 +        for (ExecutionMode m : ExecutionMode.values())
2380 +        for (boolean fFirst : new boolean[] { true, false })
2381 +        for (Integer v1 : new Integer[] { 1, null })
2382 +    {
2383 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2384 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2385 +        final CFException ex = new CFException();
2386 +        final NoopConsumer[] rs = new NoopConsumer[6];
2387 +        for (int i = 0; i < rs.length; i++) rs[i] = new NoopConsumer(m);
2388 +
2389 +        final CompletableFuture<Void> h0 = m.acceptEither(f, g, rs[0]);
2390 +        final CompletableFuture<Void> h1 = m.acceptEither(g, f, rs[1]);
2391 +        assertTrue(fFirst ? f.complete(v1) : g.completeExceptionally(ex));
2392 +        assertTrue(!fFirst ? f.complete(v1) : g.completeExceptionally(ex));
2393 +        final CompletableFuture<Void> h2 = m.acceptEither(f, g, rs[2]);
2394 +        final CompletableFuture<Void> h3 = m.acceptEither(g, f, rs[3]);
2395 +
2396 +        // unspecified behavior - both source completions available
2397 +        try {
2398 +            assertEquals(null, h0.join());
2399 +            rs[0].assertValue(v1);
2400 +        } catch (CompletionException ok) {
2401 +            checkCompletedWithWrappedException(h0, ex);
2402 +            rs[0].assertNotInvoked();
2403 +        }
2404 +        try {
2405 +            assertEquals(null, h1.join());
2406 +            rs[1].assertValue(v1);
2407 +        } catch (CompletionException ok) {
2408 +            checkCompletedWithWrappedException(h1, ex);
2409 +            rs[1].assertNotInvoked();
2410 +        }
2411 +        try {
2412 +            assertEquals(null, h2.join());
2413 +            rs[2].assertValue(v1);
2414 +        } catch (CompletionException ok) {
2415 +            checkCompletedWithWrappedException(h2, ex);
2416 +            rs[2].assertNotInvoked();
2417 +        }
2418 +        try {
2419 +            assertEquals(null, h3.join());
2420 +            rs[3].assertValue(v1);
2421 +        } catch (CompletionException ok) {
2422 +            checkCompletedWithWrappedException(h3, ex);
2423 +            rs[3].assertNotInvoked();
2424 +        }
2425 +
2426 +        checkCompletedNormally(f, v1);
2427 +        checkCompletedExceptionally(g, ex);
2428 +    }}
2429 +
2430 +    /**
2431 +     * acceptEither result completes exceptionally if either source cancelled
2432 +     */
2433 +    public void testAcceptEither_sourceCancelled() {
2434 +        for (ExecutionMode m : ExecutionMode.values())
2435 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2436 +        for (Integer v1 : new Integer[] { 1, null })
2437 +    {
2438 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2439 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2440 +        final NoopConsumer[] rs = new NoopConsumer[6];
2441 +        for (int i = 0; i < rs.length; i++) rs[i] = new NoopConsumer(m);
2442 +
2443 +        final CompletableFuture<Void> h0 = m.acceptEither(f, g, rs[0]);
2444 +        final CompletableFuture<Void> h1 = m.acceptEither(g, f, rs[1]);
2445 +        checkIncomplete(h0);
2446 +        checkIncomplete(h1);
2447 +        rs[0].assertNotInvoked();
2448 +        rs[1].assertNotInvoked();
2449 +        f.cancel(mayInterruptIfRunning);
2450 +        checkCompletedWithWrappedCancellationException(h0);
2451 +        checkCompletedWithWrappedCancellationException(h1);
2452 +        final CompletableFuture<Void> h2 = m.acceptEither(f, g, rs[2]);
2453 +        final CompletableFuture<Void> h3 = m.acceptEither(g, f, rs[3]);
2454 +        checkCompletedWithWrappedCancellationException(h2);
2455 +        checkCompletedWithWrappedCancellationException(h3);
2456 +
2457 +        g.complete(v1);
2458 +
2459 +        // unspecified behavior - both source completions available
2460 +        final CompletableFuture<Void> h4 = m.acceptEither(f, g, rs[4]);
2461 +        final CompletableFuture<Void> h5 = m.acceptEither(g, f, rs[5]);
2462 +        try {
2463 +            assertNull(h4.join());
2464 +            rs[4].assertValue(v1);
2465 +        } catch (CompletionException ok) {
2466 +            checkCompletedWithWrappedCancellationException(h4);
2467 +            rs[4].assertNotInvoked();
2468 +        }
2469 +        try {
2470 +            assertNull(h5.join());
2471 +            rs[5].assertValue(v1);
2472 +        } catch (CompletionException ok) {
2473 +            checkCompletedWithWrappedCancellationException(h5);
2474 +            rs[5].assertNotInvoked();
2475 +        }
2476 +
2477 +        checkCancelled(f);
2478 +        checkCompletedNormally(g, v1);
2479 +        checkCompletedWithWrappedCancellationException(h0);
2480 +        checkCompletedWithWrappedCancellationException(h1);
2481 +        checkCompletedWithWrappedCancellationException(h2);
2482 +        checkCompletedWithWrappedCancellationException(h3);
2483 +        for (int i = 0; i < 4; i++) rs[i].assertNotInvoked();
2484 +    }}
2485 +
2486 +    /**
2487 +     * acceptEither result completes exceptionally if action does
2488 +     */
2489 +    public void testAcceptEither_actionFailed() {
2490 +        for (ExecutionMode m : ExecutionMode.values())
2491 +        for (Integer v1 : new Integer[] { 1, null })
2492 +        for (Integer v2 : new Integer[] { 2, null })
2493 +    {
2494 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2495 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2496 +        final FailingConsumer[] rs = new FailingConsumer[6];
2497 +        for (int i = 0; i < rs.length; i++) rs[i] = new FailingConsumer(m);
2498 +
2499 +        final CompletableFuture<Void> h0 = m.acceptEither(f, g, rs[0]);
2500 +        final CompletableFuture<Void> h1 = m.acceptEither(g, f, rs[1]);
2501 +        f.complete(v1);
2502 +        final CompletableFuture<Void> h2 = m.acceptEither(f, g, rs[2]);
2503 +        final CompletableFuture<Void> h3 = m.acceptEither(g, f, rs[3]);
2504 +        checkCompletedWithWrappedCFException(h0);
2505 +        checkCompletedWithWrappedCFException(h1);
2506 +        checkCompletedWithWrappedCFException(h2);
2507 +        checkCompletedWithWrappedCFException(h3);
2508 +        for (int i = 0; i < 4; i++) rs[i].assertValue(v1);
2509 +
2510 +        g.complete(v2);
2511 +
2512 +        // unspecified behavior - both source completions available
2513 +        final CompletableFuture<Void> h4 = m.acceptEither(f, g, rs[4]);
2514 +        final CompletableFuture<Void> h5 = m.acceptEither(g, f, rs[5]);
2515 +
2516 +        checkCompletedWithWrappedCFException(h4);
2517 +        assertTrue(Objects.equals(v1, rs[4].value) ||
2518 +                   Objects.equals(v2, rs[4].value));
2519 +        checkCompletedWithWrappedCFException(h5);
2520 +        assertTrue(Objects.equals(v1, rs[5].value) ||
2521 +                   Objects.equals(v2, rs[5].value));
2522 +
2523 +        checkCompletedNormally(f, v1);
2524 +        checkCompletedNormally(g, v2);
2525 +    }}
2526 +
2527 +    /**
2528 +     * runAfterEither result completes normally after normal completion
2529 +     * of either source
2530 +     */
2531 +    public void testRunAfterEither_normalCompletion() {
2532 +        for (ExecutionMode m : ExecutionMode.values())
2533 +        for (Integer v1 : new Integer[] { 1, null })
2534 +        for (Integer v2 : new Integer[] { 2, null })
2535 +    {
2536 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2537 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2538 +        final Noop[] rs = new Noop[6];
2539 +        for (int i = 0; i < rs.length; i++) rs[i] = new Noop(m);
2540 +
2541 +        final CompletableFuture<Void> h0 = m.runAfterEither(f, g, rs[0]);
2542 +        final CompletableFuture<Void> h1 = m.runAfterEither(g, f, rs[1]);
2543 +        checkIncomplete(h0);
2544 +        checkIncomplete(h1);
2545 +        rs[0].assertNotInvoked();
2546 +        rs[1].assertNotInvoked();
2547 +        f.complete(v1);
2548 +        checkCompletedNormally(h0, null);
2549 +        checkCompletedNormally(h1, null);
2550 +        rs[0].assertInvoked();
2551 +        rs[1].assertInvoked();
2552 +        final CompletableFuture<Void> h2 = m.runAfterEither(f, g, rs[2]);
2553 +        final CompletableFuture<Void> h3 = m.runAfterEither(g, f, rs[3]);
2554 +        checkCompletedNormally(h2, null);
2555 +        checkCompletedNormally(h3, null);
2556 +        rs[2].assertInvoked();
2557 +        rs[3].assertInvoked();
2558 +
2559 +        g.complete(v2);
2560 +
2561 +        final CompletableFuture<Void> h4 = m.runAfterEither(f, g, rs[4]);
2562 +        final CompletableFuture<Void> h5 = m.runAfterEither(g, f, rs[5]);
2563 +
2564 +        checkCompletedNormally(f, v1);
2565 +        checkCompletedNormally(g, v2);
2566 +        checkCompletedNormally(h0, null);
2567 +        checkCompletedNormally(h1, null);
2568 +        checkCompletedNormally(h2, null);
2569 +        checkCompletedNormally(h3, null);
2570 +        checkCompletedNormally(h4, null);
2571 +        checkCompletedNormally(h5, null);
2572 +        for (int i = 0; i < 6; i++) rs[i].assertInvoked();
2573 +    }}
2574 +
2575 +    /**
2576 +     * runAfterEither result completes exceptionally after exceptional
2577 +     * completion of either source
2578 +     */
2579 +    public void testRunAfterEither_exceptionalCompletion() {
2580 +        for (ExecutionMode m : ExecutionMode.values())
2581 +        for (Integer v1 : new Integer[] { 1, null })
2582 +    {
2583 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2584 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2585 +        final CFException ex = new CFException();
2586 +        final Noop[] rs = new Noop[6];
2587 +        for (int i = 0; i < rs.length; i++) rs[i] = new Noop(m);
2588 +
2589 +        final CompletableFuture<Void> h0 = m.runAfterEither(f, g, rs[0]);
2590 +        final CompletableFuture<Void> h1 = m.runAfterEither(g, f, rs[1]);
2591 +        checkIncomplete(h0);
2592 +        checkIncomplete(h1);
2593 +        rs[0].assertNotInvoked();
2594 +        rs[1].assertNotInvoked();
2595 +        assertTrue(f.completeExceptionally(ex));
2596 +        checkCompletedWithWrappedException(h0, ex);
2597 +        checkCompletedWithWrappedException(h1, ex);
2598 +        final CompletableFuture<Void> h2 = m.runAfterEither(f, g, rs[2]);
2599 +        final CompletableFuture<Void> h3 = m.runAfterEither(g, f, rs[3]);
2600 +        checkCompletedWithWrappedException(h2, ex);
2601 +        checkCompletedWithWrappedException(h3, ex);
2602 +
2603 +        assertTrue(g.complete(v1));
2604 +
2605 +        // unspecified behavior - both source completions available
2606 +        final CompletableFuture<Void> h4 = m.runAfterEither(f, g, rs[4]);
2607 +        final CompletableFuture<Void> h5 = m.runAfterEither(g, f, rs[5]);
2608 +        try {
2609 +            assertNull(h4.join());
2610 +            rs[4].assertInvoked();
2611 +        } catch (CompletionException ok) {
2612 +            checkCompletedWithWrappedException(h4, ex);
2613 +            rs[4].assertNotInvoked();
2614 +        }
2615 +        try {
2616 +            assertNull(h5.join());
2617 +            rs[5].assertInvoked();
2618 +        } catch (CompletionException ok) {
2619 +            checkCompletedWithWrappedException(h5, ex);
2620 +            rs[5].assertNotInvoked();
2621 +        }
2622 +
2623 +        checkCompletedExceptionally(f, ex);
2624 +        checkCompletedNormally(g, v1);
2625 +        checkCompletedWithWrappedException(h0, ex);
2626 +        checkCompletedWithWrappedException(h1, ex);
2627 +        checkCompletedWithWrappedException(h2, ex);
2628 +        checkCompletedWithWrappedException(h3, ex);
2629 +        checkCompletedWithWrappedException(h4, ex);
2630 +        for (int i = 0; i < 4; i++) rs[i].assertNotInvoked();
2631 +    }}
2632 +
2633 +    public void testRunAfterEither_exceptionalCompletion2() {
2634 +        for (ExecutionMode m : ExecutionMode.values())
2635 +        for (boolean fFirst : new boolean[] { true, false })
2636 +        for (Integer v1 : new Integer[] { 1, null })
2637 +    {
2638 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2639 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2640 +        final CFException ex = new CFException();
2641 +        final Noop[] rs = new Noop[6];
2642 +        for (int i = 0; i < rs.length; i++) rs[i] = new Noop(m);
2643 +
2644 +        final CompletableFuture<Void> h0 = m.runAfterEither(f, g, rs[0]);
2645 +        final CompletableFuture<Void> h1 = m.runAfterEither(g, f, rs[1]);
2646 +        assertTrue( fFirst ? f.complete(v1) : g.completeExceptionally(ex));
2647 +        assertTrue(!fFirst ? f.complete(v1) : g.completeExceptionally(ex));
2648 +        final CompletableFuture<Void> h2 = m.runAfterEither(f, g, rs[2]);
2649 +        final CompletableFuture<Void> h3 = m.runAfterEither(g, f, rs[3]);
2650 +
2651 +        // unspecified behavior - both source completions available
2652 +        try {
2653 +            assertEquals(null, h0.join());
2654 +            rs[0].assertInvoked();
2655 +        } catch (CompletionException ok) {
2656 +            checkCompletedWithWrappedException(h0, ex);
2657 +            rs[0].assertNotInvoked();
2658 +        }
2659 +        try {
2660 +            assertEquals(null, h1.join());
2661 +            rs[1].assertInvoked();
2662 +        } catch (CompletionException ok) {
2663 +            checkCompletedWithWrappedException(h1, ex);
2664 +            rs[1].assertNotInvoked();
2665 +        }
2666 +        try {
2667 +            assertEquals(null, h2.join());
2668 +            rs[2].assertInvoked();
2669 +        } catch (CompletionException ok) {
2670 +            checkCompletedWithWrappedException(h2, ex);
2671 +            rs[2].assertNotInvoked();
2672 +        }
2673 +        try {
2674 +            assertEquals(null, h3.join());
2675 +            rs[3].assertInvoked();
2676 +        } catch (CompletionException ok) {
2677 +            checkCompletedWithWrappedException(h3, ex);
2678 +            rs[3].assertNotInvoked();
2679 +        }
2680 +
2681 +        checkCompletedNormally(f, v1);
2682 +        checkCompletedExceptionally(g, ex);
2683 +    }}
2684 +
2685 +    /**
2686 +     * runAfterEither result completes exceptionally if either source cancelled
2687 +     */
2688 +    public void testRunAfterEither_sourceCancelled() {
2689 +        for (ExecutionMode m : ExecutionMode.values())
2690 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2691 +        for (Integer v1 : new Integer[] { 1, null })
2692 +    {
2693 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2694 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2695 +        final Noop[] rs = new Noop[6];
2696 +        for (int i = 0; i < rs.length; i++) rs[i] = new Noop(m);
2697 +
2698 +        final CompletableFuture<Void> h0 = m.runAfterEither(f, g, rs[0]);
2699 +        final CompletableFuture<Void> h1 = m.runAfterEither(g, f, rs[1]);
2700 +        checkIncomplete(h0);
2701 +        checkIncomplete(h1);
2702 +        rs[0].assertNotInvoked();
2703 +        rs[1].assertNotInvoked();
2704 +        f.cancel(mayInterruptIfRunning);
2705 +        checkCompletedWithWrappedCancellationException(h0);
2706 +        checkCompletedWithWrappedCancellationException(h1);
2707 +        final CompletableFuture<Void> h2 = m.runAfterEither(f, g, rs[2]);
2708 +        final CompletableFuture<Void> h3 = m.runAfterEither(g, f, rs[3]);
2709 +        checkCompletedWithWrappedCancellationException(h2);
2710 +        checkCompletedWithWrappedCancellationException(h3);
2711 +
2712 +        assertTrue(g.complete(v1));
2713 +
2714 +        // unspecified behavior - both source completions available
2715 +        final CompletableFuture<Void> h4 = m.runAfterEither(f, g, rs[4]);
2716 +        final CompletableFuture<Void> h5 = m.runAfterEither(g, f, rs[5]);
2717 +        try {
2718 +            assertNull(h4.join());
2719 +            rs[4].assertInvoked();
2720 +        } catch (CompletionException ok) {
2721 +            checkCompletedWithWrappedCancellationException(h4);
2722 +            rs[4].assertNotInvoked();
2723 +        }
2724 +        try {
2725 +            assertNull(h5.join());
2726 +            rs[5].assertInvoked();
2727 +        } catch (CompletionException ok) {
2728 +            checkCompletedWithWrappedCancellationException(h5);
2729 +            rs[5].assertNotInvoked();
2730 +        }
2731 +
2732 +        checkCancelled(f);
2733 +        checkCompletedNormally(g, v1);
2734 +        checkCompletedWithWrappedCancellationException(h0);
2735 +        checkCompletedWithWrappedCancellationException(h1);
2736 +        checkCompletedWithWrappedCancellationException(h2);
2737 +        checkCompletedWithWrappedCancellationException(h3);
2738 +        for (int i = 0; i < 4; i++) rs[i].assertNotInvoked();
2739 +    }}
2740 +
2741 +    /**
2742 +     * runAfterEither result completes exceptionally if action does
2743 +     */
2744 +    public void testRunAfterEither_actionFailed() {
2745 +        for (ExecutionMode m : ExecutionMode.values())
2746 +        for (Integer v1 : new Integer[] { 1, null })
2747 +        for (Integer v2 : new Integer[] { 2, null })
2748 +    {
2749 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2750 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2751 +        final FailingRunnable[] rs = new FailingRunnable[6];
2752 +        for (int i = 0; i < rs.length; i++) rs[i] = new FailingRunnable(m);
2753 +
2754 +        final CompletableFuture<Void> h0 = m.runAfterEither(f, g, rs[0]);
2755 +        final CompletableFuture<Void> h1 = m.runAfterEither(g, f, rs[1]);
2756 +        assertTrue(f.complete(v1));
2757 +        final CompletableFuture<Void> h2 = m.runAfterEither(f, g, rs[2]);
2758 +        final CompletableFuture<Void> h3 = m.runAfterEither(g, f, rs[3]);
2759 +        checkCompletedWithWrappedCFException(h0);
2760 +        checkCompletedWithWrappedCFException(h1);
2761 +        checkCompletedWithWrappedCFException(h2);
2762 +        checkCompletedWithWrappedCFException(h3);
2763 +        for (int i = 0; i < 4; i++) rs[i].assertInvoked();
2764 +        assertTrue(g.complete(v2));
2765 +        final CompletableFuture<Void> h4 = m.runAfterEither(f, g, rs[4]);
2766 +        final CompletableFuture<Void> h5 = m.runAfterEither(g, f, rs[5]);
2767 +        checkCompletedWithWrappedCFException(h4);
2768 +        checkCompletedWithWrappedCFException(h5);
2769 +
2770 +        checkCompletedNormally(f, v1);
2771 +        checkCompletedNormally(g, v2);
2772 +        for (int i = 0; i < 6; i++) rs[i].assertInvoked();
2773 +    }}
2774 +
2775 +    /**
2776 +     * thenCompose result completes normally after normal completion of source
2777 +     */
2778 +    public void testThenCompose_normalCompletion() {
2779 +        for (ExecutionMode m : ExecutionMode.values())
2780 +        for (boolean createIncomplete : new boolean[] { true, false })
2781 +        for (Integer v1 : new Integer[] { 1, null })
2782 +    {
2783 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2784 +        final CompletableFutureInc r = new CompletableFutureInc(m);
2785 +        if (!createIncomplete) assertTrue(f.complete(v1));
2786 +        final CompletableFuture<Integer> g = m.thenCompose(f, r);
2787 +        if (createIncomplete) assertTrue(f.complete(v1));
2788 +
2789 +        checkCompletedNormally(g, inc(v1));
2790 +        checkCompletedNormally(f, v1);
2791 +        r.assertValue(v1);
2792 +    }}
2793 +
2794 +    /**
2795 +     * thenCompose result completes exceptionally after exceptional
2796 +     * completion of source
2797 +     */
2798 +    public void testThenCompose_exceptionalCompletion() {
2799 +        for (ExecutionMode m : ExecutionMode.values())
2800 +        for (boolean createIncomplete : new boolean[] { true, false })
2801 +    {
2802 +        final CFException ex = new CFException();
2803 +        final CompletableFutureInc r = new CompletableFutureInc(m);
2804 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2805 +        if (!createIncomplete) f.completeExceptionally(ex);
2806 +        final CompletableFuture<Integer> g = m.thenCompose(f, r);
2807 +        if (createIncomplete) f.completeExceptionally(ex);
2808 +
2809 +        checkCompletedWithWrappedException(g, ex);
2810 +        checkCompletedExceptionally(f, ex);
2811 +        r.assertNotInvoked();
2812 +    }}
2813 +
2814 +    /**
2815 +     * thenCompose result completes exceptionally if action does
2816 +     */
2817 +    public void testThenCompose_actionFailed() {
2818 +        for (ExecutionMode m : ExecutionMode.values())
2819 +        for (boolean createIncomplete : new boolean[] { true, false })
2820 +        for (Integer v1 : new Integer[] { 1, null })
2821 +    {
2822 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2823 +        final FailingCompletableFutureFunction r
2824 +            = new FailingCompletableFutureFunction(m);
2825 +        if (!createIncomplete) assertTrue(f.complete(v1));
2826 +        final CompletableFuture<Integer> g = m.thenCompose(f, r);
2827 +        if (createIncomplete) assertTrue(f.complete(v1));
2828 +
2829 +        checkCompletedWithWrappedCFException(g);
2830 +        checkCompletedNormally(f, v1);
2831 +    }}
2832 +
2833 +    /**
2834 +     * thenCompose result completes exceptionally if source cancelled
2835 +     */
2836 +    public void testThenCompose_sourceCancelled() {
2837 +        for (ExecutionMode m : ExecutionMode.values())
2838 +        for (boolean createIncomplete : new boolean[] { true, false })
2839 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2840 +    {
2841 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2842 +        final CompletableFutureInc r = new CompletableFutureInc(m);
2843 +        if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
2844 +        final CompletableFuture<Integer> g = m.thenCompose(f, r);
2845 +        if (createIncomplete) {
2846 +            checkIncomplete(g);
2847 +            assertTrue(f.cancel(mayInterruptIfRunning));
2848 +        }
2849 +
2850 +        checkCompletedWithWrappedCancellationException(g);
2851 +        checkCancelled(f);
2852 +    }}
2853 +
2854 +    // other static methods
2855 +
2856 +    /**
2857       * allOf(no component futures) returns a future completed normally
2858       * with the value null
2859       */
2860      public void testAllOf_empty() throws Exception {
2861 <        CompletableFuture<?> f = CompletableFuture.allOf();
2861 >        CompletableFuture<Void> f = CompletableFuture.allOf();
2862          checkCompletedNormally(f, null);
2863      }
2864  
2865      /**
2866 +     * allOf returns a future completed normally with the value null
2867 +     * when all components complete normally
2868 +     */
2869 +    public void testAllOf_normal() throws Exception {
2870 +        for (int k = 1; k < 20; ++k) {
2871 +            CompletableFuture<Integer>[] fs
2872 +                = (CompletableFuture<Integer>[]) new CompletableFuture[k];
2873 +            for (int i = 0; i < k; ++i)
2874 +                fs[i] = new CompletableFuture<>();
2875 +            CompletableFuture<Void> f = CompletableFuture.allOf(fs);
2876 +            for (int i = 0; i < k; ++i) {
2877 +                checkIncomplete(f);
2878 +                checkIncomplete(CompletableFuture.allOf(fs));
2879 +                fs[i].complete(one);
2880 +            }
2881 +            checkCompletedNormally(f, null);
2882 +            checkCompletedNormally(CompletableFuture.allOf(fs), null);
2883 +        }
2884 +    }
2885 +
2886 +    public void testAllOf_backwards() throws Exception {
2887 +        for (int k = 1; k < 20; ++k) {
2888 +            CompletableFuture<Integer>[] fs
2889 +                = (CompletableFuture<Integer>[]) new CompletableFuture[k];
2890 +            for (int i = 0; i < k; ++i)
2891 +                fs[i] = new CompletableFuture<>();
2892 +            CompletableFuture<Void> f = CompletableFuture.allOf(fs);
2893 +            for (int i = k - 1; i >= 0; i--) {
2894 +                checkIncomplete(f);
2895 +                checkIncomplete(CompletableFuture.allOf(fs));
2896 +                fs[i].complete(one);
2897 +            }
2898 +            checkCompletedNormally(f, null);
2899 +            checkCompletedNormally(CompletableFuture.allOf(fs), null);
2900 +        }
2901 +    }
2902 +
2903 +    /**
2904       * anyOf(no component futures) returns an incomplete future
2905       */
2906      public void testAnyOf_empty() throws Exception {
2907 <        CompletableFuture<?> f = CompletableFuture.anyOf();
2907 >        CompletableFuture<Object> f = CompletableFuture.anyOf();
2908          checkIncomplete(f);
2909      }
2910 +
2911 +    /**
2912 +     * anyOf returns a future completed normally with a value when
2913 +     * a component future does
2914 +     */
2915 +    public void testAnyOf_normal() throws Exception {
2916 +        for (int k = 0; k < 10; ++k) {
2917 +            CompletableFuture[] fs = new CompletableFuture[k];
2918 +            for (int i = 0; i < k; ++i)
2919 +                fs[i] = new CompletableFuture<>();
2920 +            CompletableFuture<Object> f = CompletableFuture.anyOf(fs);
2921 +            checkIncomplete(f);
2922 +            for (int i = 0; i < k; ++i) {
2923 +                fs[i].complete(one);
2924 +                checkCompletedNormally(f, one);
2925 +                checkCompletedNormally(CompletableFuture.anyOf(fs), one);
2926 +            }
2927 +        }
2928 +    }
2929 +
2930 +    /**
2931 +     * anyOf result completes exceptionally when any component does.
2932 +     */
2933 +    public void testAnyOf_exceptional() throws Exception {
2934 +        for (int k = 0; k < 10; ++k) {
2935 +            CompletableFuture[] fs = new CompletableFuture[k];
2936 +            for (int i = 0; i < k; ++i)
2937 +                fs[i] = new CompletableFuture<>();
2938 +            CompletableFuture<Object> f = CompletableFuture.anyOf(fs);
2939 +            checkIncomplete(f);
2940 +            for (int i = 0; i < k; ++i) {
2941 +                fs[i].completeExceptionally(new CFException());
2942 +                checkCompletedWithWrappedCFException(f);
2943 +                checkCompletedWithWrappedCFException(CompletableFuture.anyOf(fs));
2944 +            }
2945 +        }
2946 +    }
2947 +
2948 +    /**
2949 +     * Completion methods throw NullPointerException with null arguments
2950 +     */
2951 +    public void testNPE() {
2952 +        CompletableFuture<Integer> f = new CompletableFuture<>();
2953 +        CompletableFuture<Integer> g = new CompletableFuture<>();
2954 +        CompletableFuture<Integer> nullFuture = (CompletableFuture<Integer>)null;
2955 +        CompletableFuture<?> h;
2956 +        ThreadExecutor exec = new ThreadExecutor();
2957 +
2958 +        Runnable[] throwingActions = {
2959 +            () -> CompletableFuture.supplyAsync(null),
2960 +            () -> CompletableFuture.supplyAsync(null, exec),
2961 +            () -> CompletableFuture.supplyAsync(new IntegerSupplier(ExecutionMode.DEFAULT, 42), null),
2962 +
2963 +            () -> CompletableFuture.runAsync(null),
2964 +            () -> CompletableFuture.runAsync(null, exec),
2965 +            () -> CompletableFuture.runAsync(() -> {}, null),
2966 +
2967 +            () -> f.completeExceptionally(null),
2968 +
2969 +            () -> f.thenApply(null),
2970 +            () -> f.thenApplyAsync(null),
2971 +            () -> f.thenApplyAsync((x) -> x, null),
2972 +            () -> f.thenApplyAsync(null, exec),
2973 +
2974 +            () -> f.thenAccept(null),
2975 +            () -> f.thenAcceptAsync(null),
2976 +            () -> f.thenAcceptAsync((x) -> {} , null),
2977 +            () -> f.thenAcceptAsync(null, exec),
2978 +
2979 +            () -> f.thenRun(null),
2980 +            () -> f.thenRunAsync(null),
2981 +            () -> f.thenRunAsync(() -> {} , null),
2982 +            () -> f.thenRunAsync(null, exec),
2983 +
2984 +            () -> f.thenCombine(g, null),
2985 +            () -> f.thenCombineAsync(g, null),
2986 +            () -> f.thenCombineAsync(g, null, exec),
2987 +            () -> f.thenCombine(nullFuture, (x, y) -> x),
2988 +            () -> f.thenCombineAsync(nullFuture, (x, y) -> x),
2989 +            () -> f.thenCombineAsync(nullFuture, (x, y) -> x, exec),
2990 +            () -> f.thenCombineAsync(g, (x, y) -> x, null),
2991 +
2992 +            () -> f.thenAcceptBoth(g, null),
2993 +            () -> f.thenAcceptBothAsync(g, null),
2994 +            () -> f.thenAcceptBothAsync(g, null, exec),
2995 +            () -> f.thenAcceptBoth(nullFuture, (x, y) -> {}),
2996 +            () -> f.thenAcceptBothAsync(nullFuture, (x, y) -> {}),
2997 +            () -> f.thenAcceptBothAsync(nullFuture, (x, y) -> {}, exec),
2998 +            () -> f.thenAcceptBothAsync(g, (x, y) -> {}, null),
2999 +
3000 +            () -> f.runAfterBoth(g, null),
3001 +            () -> f.runAfterBothAsync(g, null),
3002 +            () -> f.runAfterBothAsync(g, null, exec),
3003 +            () -> f.runAfterBoth(nullFuture, () -> {}),
3004 +            () -> f.runAfterBothAsync(nullFuture, () -> {}),
3005 +            () -> f.runAfterBothAsync(nullFuture, () -> {}, exec),
3006 +            () -> f.runAfterBothAsync(g, () -> {}, null),
3007 +
3008 +            () -> f.applyToEither(g, null),
3009 +            () -> f.applyToEitherAsync(g, null),
3010 +            () -> f.applyToEitherAsync(g, null, exec),
3011 +            () -> f.applyToEither(nullFuture, (x) -> x),
3012 +            () -> f.applyToEitherAsync(nullFuture, (x) -> x),
3013 +            () -> f.applyToEitherAsync(nullFuture, (x) -> x, exec),
3014 +            () -> f.applyToEitherAsync(g, (x) -> x, null),
3015 +
3016 +            () -> f.acceptEither(g, null),
3017 +            () -> f.acceptEitherAsync(g, null),
3018 +            () -> f.acceptEitherAsync(g, null, exec),
3019 +            () -> f.acceptEither(nullFuture, (x) -> {}),
3020 +            () -> f.acceptEitherAsync(nullFuture, (x) -> {}),
3021 +            () -> f.acceptEitherAsync(nullFuture, (x) -> {}, exec),
3022 +            () -> f.acceptEitherAsync(g, (x) -> {}, null),
3023 +
3024 +            () -> f.runAfterEither(g, null),
3025 +            () -> f.runAfterEitherAsync(g, null),
3026 +            () -> f.runAfterEitherAsync(g, null, exec),
3027 +            () -> f.runAfterEither(nullFuture, () -> {}),
3028 +            () -> f.runAfterEitherAsync(nullFuture, () -> {}),
3029 +            () -> f.runAfterEitherAsync(nullFuture, () -> {}, exec),
3030 +            () -> f.runAfterEitherAsync(g, () -> {}, null),
3031 +
3032 +            () -> f.thenCompose(null),
3033 +            () -> f.thenComposeAsync(null),
3034 +            () -> f.thenComposeAsync(new CompletableFutureInc(ExecutionMode.EXECUTOR), null),
3035 +            () -> f.thenComposeAsync(null, exec),
3036 +
3037 +            () -> f.exceptionally(null),
3038 +
3039 +            () -> f.handle(null),
3040 +
3041 +            () -> CompletableFuture.allOf((CompletableFuture<?>)null),
3042 +            () -> CompletableFuture.allOf((CompletableFuture<?>[])null),
3043 +            () -> CompletableFuture.allOf(f, null),
3044 +            () -> CompletableFuture.allOf(null, f),
3045 +
3046 +            () -> CompletableFuture.anyOf((CompletableFuture<?>)null),
3047 +            () -> CompletableFuture.anyOf((CompletableFuture<?>[])null),
3048 +            () -> CompletableFuture.anyOf(f, null),
3049 +            () -> CompletableFuture.anyOf(null, f),
3050 +
3051 +            () -> f.obtrudeException(null),
3052 +        };
3053 +
3054 +        assertThrows(NullPointerException.class, throwingActions);
3055 +        assertEquals(0, exec.count.get());
3056 +    }
3057 +
3058 +    /**
3059 +     * toCompletableFuture returns this CompletableFuture.
3060 +     */
3061 +    public void testToCompletableFuture() {
3062 +        CompletableFuture<Integer> f = new CompletableFuture<>();
3063 +        assertSame(f, f.toCompletableFuture());
3064 +    }
3065 +
3066 + //     public void testRunAfterEither_resultDeterminedAtTimeOfCreation() {
3067 + //         for (ExecutionMode m : ExecutionMode.values())
3068 + //         for (boolean mayInterruptIfRunning : new boolean[] { true, false })
3069 + //         for (Integer v1 : new Integer[] { 1, null })
3070 + //     {
3071 + //         final CompletableFuture<Integer> f = new CompletableFuture<>();
3072 + //         final CompletableFuture<Integer> g = new CompletableFuture<>();
3073 + //         final Noop[] rs = new Noop[2];
3074 + //         for (int i = 0; i < rs.length; i++) rs[i] = new Noop(m);
3075 + //         f.complete(v1);
3076 + //         final CompletableFuture<Void> h0 = m.runAfterEither(f, g, rs[0]);
3077 + //         final CompletableFuture<Void> h1 = m.runAfterEither(g, f, rs[1]);
3078 + //         assertTrue(g.cancel(mayInterruptIfRunning));
3079 + //         checkCompletedNormally(h0, null);
3080 + //         checkCompletedNormally(h1, null);
3081 + //         for (Noop r : rs) r.assertInvoked();
3082 + //     }}
3083 +
3084   }

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