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Comparing jsr166/src/test/tck/CompletableFutureTest.java (file contents):
Revision 1.1 by jsr166, Wed Feb 6 19:55:06 2013 UTC vs.
Revision 1.127 by jsr166, Sun Oct 25 02:58:25 2015 UTC

# Line 1 | Line 1
1   /*
2 < * Written by Doug Lea with assistance from members of JCP JSR-166
3 < * Expert Group and released to the public domain, as explained at
2 > * Written by Doug Lea and Martin Buchholz with assistance from
3 > * members of JCP JSR-166 Expert Group and released to the public
4 > * domain, as explained at
5   * http://creativecommons.org/publicdomain/zero/1.0/
5 * Other contributors include Andrew Wright, Jeffrey Hayes,
6 * Pat Fisher, Mike Judd.
6   */
7  
8 < import junit.framework.*;
8 > import static java.util.concurrent.TimeUnit.MILLISECONDS;
9 > import static java.util.concurrent.TimeUnit.SECONDS;
10 >
11 > import java.lang.reflect.Method;
12 > import java.lang.reflect.Modifier;
13 >
14 > import java.util.stream.Collectors;
15 > import java.util.stream.Stream;
16 >
17 > import java.util.ArrayList;
18 > import java.util.Arrays;
19 > import java.util.List;
20 > import java.util.Objects;
21 > import java.util.Set;
22   import java.util.concurrent.Callable;
23   import java.util.concurrent.CancellationException;
12 import java.util.concurrent.CountDownLatch;
13 import java.util.concurrent.ExecutionException;
14 import java.util.concurrent.Future;
24   import java.util.concurrent.CompletableFuture;
25 + import java.util.concurrent.CompletionException;
26 + import java.util.concurrent.CompletionStage;
27 + import java.util.concurrent.ExecutionException;
28 + import java.util.concurrent.Executor;
29 + import java.util.concurrent.ForkJoinPool;
30 + import java.util.concurrent.ForkJoinTask;
31   import java.util.concurrent.TimeoutException;
32 + import java.util.concurrent.TimeUnit;
33   import java.util.concurrent.atomic.AtomicInteger;
34 < import static java.util.concurrent.TimeUnit.MILLISECONDS;
35 < import static java.util.concurrent.TimeUnit.SECONDS;
36 < import java.util.*;
34 > import java.util.concurrent.atomic.AtomicReference;
35 > import java.util.function.BiConsumer;
36 > import java.util.function.BiFunction;
37 > import java.util.function.Consumer;
38 > import java.util.function.Function;
39 > import java.util.function.Predicate;
40 > import java.util.function.Supplier;
41 >
42 > import junit.framework.Test;
43 > import junit.framework.TestSuite;
44  
45   public class CompletableFutureTest extends JSR166TestCase {
46  
47      public static void main(String[] args) {
48 <        junit.textui.TestRunner.run(suite());
48 >        main(suite(), args);
49      }
50      public static Test suite() {
51          return new TestSuite(CompletableFutureTest.class);
52      }
53  
54 +    static class CFException extends RuntimeException {}
55 +
56 +    void checkIncomplete(CompletableFuture<?> f) {
57 +        assertFalse(f.isDone());
58 +        assertFalse(f.isCancelled());
59 +        assertTrue(f.toString().contains("Not completed"));
60 +        try {
61 +            assertNull(f.getNow(null));
62 +        } catch (Throwable fail) { threadUnexpectedException(fail); }
63 +        try {
64 +            f.get(0L, SECONDS);
65 +            shouldThrow();
66 +        }
67 +        catch (TimeoutException success) {}
68 +        catch (Throwable fail) { threadUnexpectedException(fail); }
69 +    }
70 +
71 +    <T> void checkCompletedNormally(CompletableFuture<T> f, T value) {
72 +        checkTimedGet(f, value);
73 +
74 +        try {
75 +            assertEquals(value, f.join());
76 +        } catch (Throwable fail) { threadUnexpectedException(fail); }
77 +        try {
78 +            assertEquals(value, f.getNow(null));
79 +        } catch (Throwable fail) { threadUnexpectedException(fail); }
80 +        try {
81 +            assertEquals(value, f.get());
82 +        } catch (Throwable fail) { threadUnexpectedException(fail); }
83 +        assertTrue(f.isDone());
84 +        assertFalse(f.isCancelled());
85 +        assertFalse(f.isCompletedExceptionally());
86 +        assertTrue(f.toString().contains("[Completed normally]"));
87 +    }
88 +
89 +    /**
90 +     * Returns the "raw" internal exceptional completion of f,
91 +     * without any additional wrapping with CompletionException.
92 +     */
93 +    <U> Throwable exceptionalCompletion(CompletableFuture<U> f) {
94 +        // handle (and whenComplete) can distinguish between "direct"
95 +        // and "wrapped" exceptional completion
96 +        return f.handle((U u, Throwable t) -> t).join();
97 +    }
98 +
99 +    void checkCompletedExceptionally(CompletableFuture<?> f,
100 +                                     boolean wrapped,
101 +                                     Consumer<Throwable> checker) {
102 +        Throwable cause = exceptionalCompletion(f);
103 +        if (wrapped) {
104 +            assertTrue(cause instanceof CompletionException);
105 +            cause = cause.getCause();
106 +        }
107 +        checker.accept(cause);
108 +
109 +        long startTime = System.nanoTime();
110 +        try {
111 +            f.get(LONG_DELAY_MS, MILLISECONDS);
112 +            shouldThrow();
113 +        } catch (ExecutionException success) {
114 +            assertSame(cause, success.getCause());
115 +        } catch (Throwable fail) { threadUnexpectedException(fail); }
116 +        assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS / 2);
117 +
118 +        try {
119 +            f.join();
120 +            shouldThrow();
121 +        } catch (CompletionException success) {
122 +            assertSame(cause, success.getCause());
123 +        } catch (Throwable fail) { threadUnexpectedException(fail); }
124 +
125 +        try {
126 +            f.getNow(null);
127 +            shouldThrow();
128 +        } catch (CompletionException success) {
129 +            assertSame(cause, success.getCause());
130 +        } catch (Throwable fail) { threadUnexpectedException(fail); }
131 +
132 +        try {
133 +            f.get();
134 +            shouldThrow();
135 +        } catch (ExecutionException success) {
136 +            assertSame(cause, success.getCause());
137 +        } catch (Throwable fail) { threadUnexpectedException(fail); }
138 +
139 +        assertFalse(f.isCancelled());
140 +        assertTrue(f.isDone());
141 +        assertTrue(f.isCompletedExceptionally());
142 +        assertTrue(f.toString().contains("[Completed exceptionally]"));
143 +    }
144 +
145 +    void checkCompletedWithWrappedCFException(CompletableFuture<?> f) {
146 +        checkCompletedExceptionally(f, true,
147 +            (t) -> assertTrue(t instanceof CFException));
148 +    }
149 +
150 +    void checkCompletedWithWrappedCancellationException(CompletableFuture<?> f) {
151 +        checkCompletedExceptionally(f, true,
152 +            (t) -> assertTrue(t instanceof CancellationException));
153 +    }
154 +
155 +    void checkCompletedWithTimeoutException(CompletableFuture<?> f) {
156 +        checkCompletedExceptionally(f, false,
157 +            (t) -> assertTrue(t instanceof TimeoutException));
158 +    }
159 +
160 +    void checkCompletedWithWrappedException(CompletableFuture<?> f,
161 +                                            Throwable ex) {
162 +        checkCompletedExceptionally(f, true, (t) -> assertSame(t, ex));
163 +    }
164 +
165 +    void checkCompletedExceptionally(CompletableFuture<?> f, Throwable ex) {
166 +        checkCompletedExceptionally(f, false, (t) -> assertSame(t, ex));
167 +    }
168 +
169 +    void checkCancelled(CompletableFuture<?> f) {
170 +        long startTime = System.nanoTime();
171 +        try {
172 +            f.get(LONG_DELAY_MS, MILLISECONDS);
173 +            shouldThrow();
174 +        } catch (CancellationException success) {
175 +        } catch (Throwable fail) { threadUnexpectedException(fail); }
176 +        assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS / 2);
177 +
178 +        try {
179 +            f.join();
180 +            shouldThrow();
181 +        } catch (CancellationException success) {}
182 +        try {
183 +            f.getNow(null);
184 +            shouldThrow();
185 +        } catch (CancellationException success) {}
186 +        try {
187 +            f.get();
188 +            shouldThrow();
189 +        } catch (CancellationException success) {
190 +        } catch (Throwable fail) { threadUnexpectedException(fail); }
191 +
192 +        assertTrue(exceptionalCompletion(f) instanceof CancellationException);
193 +
194 +        assertTrue(f.isDone());
195 +        assertTrue(f.isCompletedExceptionally());
196 +        assertTrue(f.isCancelled());
197 +        assertTrue(f.toString().contains("[Completed exceptionally]"));
198 +    }
199 +
200 +    /**
201 +     * A newly constructed CompletableFuture is incomplete, as indicated
202 +     * by methods isDone, isCancelled, and getNow
203 +     */
204 +    public void testConstructor() {
205 +        CompletableFuture<Integer> f = new CompletableFuture<>();
206 +        checkIncomplete(f);
207 +    }
208 +
209 +    /**
210 +     * complete completes normally, as indicated by methods isDone,
211 +     * isCancelled, join, get, and getNow
212 +     */
213 +    public void testComplete() {
214 +        for (Integer v1 : new Integer[] { 1, null })
215 +    {
216 +        CompletableFuture<Integer> f = new CompletableFuture<>();
217 +        checkIncomplete(f);
218 +        assertTrue(f.complete(v1));
219 +        assertFalse(f.complete(v1));
220 +        checkCompletedNormally(f, v1);
221 +    }}
222 +
223 +    /**
224 +     * completeExceptionally completes exceptionally, as indicated by
225 +     * methods isDone, isCancelled, join, get, and getNow
226 +     */
227 +    public void testCompleteExceptionally() {
228 +        CompletableFuture<Integer> f = new CompletableFuture<>();
229 +        CFException ex = new CFException();
230 +        checkIncomplete(f);
231 +        f.completeExceptionally(ex);
232 +        checkCompletedExceptionally(f, ex);
233 +    }
234 +
235 +    /**
236 +     * cancel completes exceptionally and reports cancelled, as indicated by
237 +     * methods isDone, isCancelled, join, get, and getNow
238 +     */
239 +    public void testCancel() {
240 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
241 +    {
242 +        CompletableFuture<Integer> f = new CompletableFuture<>();
243 +        checkIncomplete(f);
244 +        assertTrue(f.cancel(mayInterruptIfRunning));
245 +        assertTrue(f.cancel(mayInterruptIfRunning));
246 +        assertTrue(f.cancel(!mayInterruptIfRunning));
247 +        checkCancelled(f);
248 +    }}
249 +
250 +    /**
251 +     * obtrudeValue forces completion with given value
252 +     */
253 +    public void testObtrudeValue() {
254 +        CompletableFuture<Integer> f = new CompletableFuture<>();
255 +        checkIncomplete(f);
256 +        assertTrue(f.complete(one));
257 +        checkCompletedNormally(f, one);
258 +        f.obtrudeValue(three);
259 +        checkCompletedNormally(f, three);
260 +        f.obtrudeValue(two);
261 +        checkCompletedNormally(f, two);
262 +        f = new CompletableFuture<>();
263 +        f.obtrudeValue(three);
264 +        checkCompletedNormally(f, three);
265 +        f.obtrudeValue(null);
266 +        checkCompletedNormally(f, null);
267 +        f = new CompletableFuture<>();
268 +        f.completeExceptionally(new CFException());
269 +        f.obtrudeValue(four);
270 +        checkCompletedNormally(f, four);
271 +    }
272 +
273 +    /**
274 +     * obtrudeException forces completion with given exception
275 +     */
276 +    public void testObtrudeException() {
277 +        for (Integer v1 : new Integer[] { 1, null })
278 +    {
279 +        CFException ex;
280 +        CompletableFuture<Integer> f;
281 +
282 +        f = new CompletableFuture<>();
283 +        assertTrue(f.complete(v1));
284 +        for (int i = 0; i < 2; i++) {
285 +            f.obtrudeException(ex = new CFException());
286 +            checkCompletedExceptionally(f, ex);
287 +        }
288 +
289 +        f = new CompletableFuture<>();
290 +        for (int i = 0; i < 2; i++) {
291 +            f.obtrudeException(ex = new CFException());
292 +            checkCompletedExceptionally(f, ex);
293 +        }
294 +
295 +        f = new CompletableFuture<>();
296 +        f.completeExceptionally(ex = new CFException());
297 +        f.obtrudeValue(v1);
298 +        checkCompletedNormally(f, v1);
299 +        f.obtrudeException(ex = new CFException());
300 +        checkCompletedExceptionally(f, ex);
301 +        f.completeExceptionally(new CFException());
302 +        checkCompletedExceptionally(f, ex);
303 +        assertFalse(f.complete(v1));
304 +        checkCompletedExceptionally(f, ex);
305 +    }}
306 +
307 +    /**
308 +     * getNumberOfDependents returns number of dependent tasks
309 +     */
310 +    public void testGetNumberOfDependents() {
311 +        for (ExecutionMode m : ExecutionMode.values())
312 +        for (Integer v1 : new Integer[] { 1, null })
313 +    {
314 +        CompletableFuture<Integer> f = new CompletableFuture<>();
315 +        assertEquals(0, f.getNumberOfDependents());
316 +        final CompletableFuture<Void> g = m.thenRun(f, new Noop(m));
317 +        assertEquals(1, f.getNumberOfDependents());
318 +        assertEquals(0, g.getNumberOfDependents());
319 +        final CompletableFuture<Void> h = m.thenRun(f, new Noop(m));
320 +        assertEquals(2, f.getNumberOfDependents());
321 +        assertEquals(0, h.getNumberOfDependents());
322 +        assertTrue(f.complete(v1));
323 +        checkCompletedNormally(g, null);
324 +        checkCompletedNormally(h, null);
325 +        assertEquals(0, f.getNumberOfDependents());
326 +        assertEquals(0, g.getNumberOfDependents());
327 +        assertEquals(0, h.getNumberOfDependents());
328 +    }}
329 +
330 +    /**
331 +     * toString indicates current completion state
332 +     */
333      public void testToString() {
334          CompletableFuture<String> f;
335 <        assertTrue(new CompletableFuture<String>().toString()
34 <                   .contains("[Not completed]"));
335 >
336          f = new CompletableFuture<String>();
337 <        f.complete("foo");
337 >        assertTrue(f.toString().contains("[Not completed]"));
338 >
339 >        assertTrue(f.complete("foo"));
340          assertTrue(f.toString().contains("[Completed normally]"));
341 +
342          f = new CompletableFuture<String>();
343 <        f.completeExceptionally(new IndexOutOfBoundsException());
343 >        assertTrue(f.completeExceptionally(new IndexOutOfBoundsException()));
344          assertTrue(f.toString().contains("[Completed exceptionally]"));
345 +
346 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false }) {
347 +            f = new CompletableFuture<String>();
348 +            assertTrue(f.cancel(mayInterruptIfRunning));
349 +            assertTrue(f.toString().contains("[Completed exceptionally]"));
350 +        }
351 +    }
352 +
353 +    /**
354 +     * completedFuture returns a completed CompletableFuture with given value
355 +     */
356 +    public void testCompletedFuture() {
357 +        CompletableFuture<String> f = CompletableFuture.completedFuture("test");
358 +        checkCompletedNormally(f, "test");
359 +    }
360 +
361 +    abstract class CheckedAction {
362 +        int invocationCount = 0;
363 +        final ExecutionMode m;
364 +        CheckedAction(ExecutionMode m) { this.m = m; }
365 +        void invoked() {
366 +            m.checkExecutionMode();
367 +            assertEquals(0, invocationCount++);
368 +        }
369 +        void assertNotInvoked() { assertEquals(0, invocationCount); }
370 +        void assertInvoked() { assertEquals(1, invocationCount); }
371 +    }
372 +
373 +    abstract class CheckedIntegerAction extends CheckedAction {
374 +        Integer value;
375 +        CheckedIntegerAction(ExecutionMode m) { super(m); }
376 +        void assertValue(Integer expected) {
377 +            assertInvoked();
378 +            assertEquals(expected, value);
379 +        }
380 +    }
381 +
382 +    class IntegerSupplier extends CheckedAction
383 +        implements Supplier<Integer>
384 +    {
385 +        final Integer value;
386 +        IntegerSupplier(ExecutionMode m, Integer value) {
387 +            super(m);
388 +            this.value = value;
389 +        }
390 +        public Integer get() {
391 +            invoked();
392 +            return value;
393 +        }
394 +    }
395 +
396 +    // A function that handles and produces null values as well.
397 +    static Integer inc(Integer x) {
398 +        return (x == null) ? null : x + 1;
399 +    }
400 +
401 +    class NoopConsumer extends CheckedIntegerAction
402 +        implements Consumer<Integer>
403 +    {
404 +        NoopConsumer(ExecutionMode m) { super(m); }
405 +        public void accept(Integer x) {
406 +            invoked();
407 +            value = x;
408 +        }
409 +    }
410 +
411 +    class IncFunction extends CheckedIntegerAction
412 +        implements Function<Integer,Integer>
413 +    {
414 +        IncFunction(ExecutionMode m) { super(m); }
415 +        public Integer apply(Integer x) {
416 +            invoked();
417 +            return value = inc(x);
418 +        }
419 +    }
420 +
421 +    // Choose non-commutative actions for better coverage
422 +    // A non-commutative function that handles and produces null values as well.
423 +    static Integer subtract(Integer x, Integer y) {
424 +        return (x == null && y == null) ? null :
425 +            ((x == null) ? 42 : x.intValue())
426 +            - ((y == null) ? 99 : y.intValue());
427 +    }
428 +
429 +    class SubtractAction extends CheckedIntegerAction
430 +        implements BiConsumer<Integer, Integer>
431 +    {
432 +        SubtractAction(ExecutionMode m) { super(m); }
433 +        public void accept(Integer x, Integer y) {
434 +            invoked();
435 +            value = subtract(x, y);
436 +        }
437 +    }
438 +
439 +    class SubtractFunction extends CheckedIntegerAction
440 +        implements BiFunction<Integer, Integer, Integer>
441 +    {
442 +        SubtractFunction(ExecutionMode m) { super(m); }
443 +        public Integer apply(Integer x, Integer y) {
444 +            invoked();
445 +            return value = subtract(x, y);
446 +        }
447 +    }
448 +
449 +    class Noop extends CheckedAction implements Runnable {
450 +        Noop(ExecutionMode m) { super(m); }
451 +        public void run() {
452 +            invoked();
453 +        }
454 +    }
455 +
456 +    class FailingSupplier extends CheckedAction
457 +        implements Supplier<Integer>
458 +    {
459 +        FailingSupplier(ExecutionMode m) { super(m); }
460 +        public Integer get() {
461 +            invoked();
462 +            throw new CFException();
463 +        }
464 +    }
465 +
466 +    class FailingConsumer extends CheckedIntegerAction
467 +        implements Consumer<Integer>
468 +    {
469 +        FailingConsumer(ExecutionMode m) { super(m); }
470 +        public void accept(Integer x) {
471 +            invoked();
472 +            value = x;
473 +            throw new CFException();
474 +        }
475 +    }
476 +
477 +    class FailingBiConsumer extends CheckedIntegerAction
478 +        implements BiConsumer<Integer, Integer>
479 +    {
480 +        FailingBiConsumer(ExecutionMode m) { super(m); }
481 +        public void accept(Integer x, Integer y) {
482 +            invoked();
483 +            value = subtract(x, y);
484 +            throw new CFException();
485 +        }
486 +    }
487 +
488 +    class FailingFunction extends CheckedIntegerAction
489 +        implements Function<Integer, Integer>
490 +    {
491 +        FailingFunction(ExecutionMode m) { super(m); }
492 +        public Integer apply(Integer x) {
493 +            invoked();
494 +            value = x;
495 +            throw new CFException();
496 +        }
497 +    }
498 +
499 +    class FailingBiFunction extends CheckedIntegerAction
500 +        implements BiFunction<Integer, Integer, Integer>
501 +    {
502 +        FailingBiFunction(ExecutionMode m) { super(m); }
503 +        public Integer apply(Integer x, Integer y) {
504 +            invoked();
505 +            value = subtract(x, y);
506 +            throw new CFException();
507 +        }
508 +    }
509 +
510 +    class FailingRunnable extends CheckedAction implements Runnable {
511 +        FailingRunnable(ExecutionMode m) { super(m); }
512 +        public void run() {
513 +            invoked();
514 +            throw new CFException();
515 +        }
516 +    }
517 +
518 +    class CompletableFutureInc extends CheckedIntegerAction
519 +        implements Function<Integer, CompletableFuture<Integer>>
520 +    {
521 +        CompletableFutureInc(ExecutionMode m) { super(m); }
522 +        public CompletableFuture<Integer> apply(Integer x) {
523 +            invoked();
524 +            value = x;
525 +            CompletableFuture<Integer> f = new CompletableFuture<>();
526 +            assertTrue(f.complete(inc(x)));
527 +            return f;
528 +        }
529 +    }
530 +
531 +    class FailingCompletableFutureFunction extends CheckedIntegerAction
532 +        implements Function<Integer, CompletableFuture<Integer>>
533 +    {
534 +        FailingCompletableFutureFunction(ExecutionMode m) { super(m); }
535 +        public CompletableFuture<Integer> apply(Integer x) {
536 +            invoked();
537 +            value = x;
538 +            throw new CFException();
539 +        }
540 +    }
541 +
542 +    // Used for explicit executor tests
543 +    static final class ThreadExecutor implements Executor {
544 +        final AtomicInteger count = new AtomicInteger(0);
545 +        static final ThreadGroup tg = new ThreadGroup("ThreadExecutor");
546 +        static boolean startedCurrentThread() {
547 +            return Thread.currentThread().getThreadGroup() == tg;
548 +        }
549 +
550 +        public void execute(Runnable r) {
551 +            count.getAndIncrement();
552 +            new Thread(tg, r).start();
553 +        }
554 +    }
555 +
556 +    static final boolean defaultExecutorIsCommonPool
557 +        = ForkJoinPool.getCommonPoolParallelism() > 1;
558 +
559 +    /**
560 +     * Permits the testing of parallel code for the 3 different
561 +     * execution modes without copy/pasting all the test methods.
562 +     */
563 +    enum ExecutionMode {
564 +        SYNC {
565 +            public void checkExecutionMode() {
566 +                assertFalse(ThreadExecutor.startedCurrentThread());
567 +                assertNull(ForkJoinTask.getPool());
568 +            }
569 +            public CompletableFuture<Void> runAsync(Runnable a) {
570 +                throw new UnsupportedOperationException();
571 +            }
572 +            public <U> CompletableFuture<U> supplyAsync(Supplier<U> a) {
573 +                throw new UnsupportedOperationException();
574 +            }
575 +            public <T> CompletableFuture<Void> thenRun
576 +                (CompletableFuture<T> f, Runnable a) {
577 +                return f.thenRun(a);
578 +            }
579 +            public <T> CompletableFuture<Void> thenAccept
580 +                (CompletableFuture<T> f, Consumer<? super T> a) {
581 +                return f.thenAccept(a);
582 +            }
583 +            public <T,U> CompletableFuture<U> thenApply
584 +                (CompletableFuture<T> f, Function<? super T,U> a) {
585 +                return f.thenApply(a);
586 +            }
587 +            public <T,U> CompletableFuture<U> thenCompose
588 +                (CompletableFuture<T> f,
589 +                 Function<? super T,? extends CompletionStage<U>> a) {
590 +                return f.thenCompose(a);
591 +            }
592 +            public <T,U> CompletableFuture<U> handle
593 +                (CompletableFuture<T> f,
594 +                 BiFunction<? super T,Throwable,? extends U> a) {
595 +                return f.handle(a);
596 +            }
597 +            public <T> CompletableFuture<T> whenComplete
598 +                (CompletableFuture<T> f,
599 +                 BiConsumer<? super T,? super Throwable> a) {
600 +                return f.whenComplete(a);
601 +            }
602 +            public <T,U> CompletableFuture<Void> runAfterBoth
603 +                (CompletableFuture<T> f, CompletableFuture<U> g, Runnable a) {
604 +                return f.runAfterBoth(g, a);
605 +            }
606 +            public <T,U> CompletableFuture<Void> thenAcceptBoth
607 +                (CompletableFuture<T> f,
608 +                 CompletionStage<? extends U> g,
609 +                 BiConsumer<? super T,? super U> a) {
610 +                return f.thenAcceptBoth(g, a);
611 +            }
612 +            public <T,U,V> CompletableFuture<V> thenCombine
613 +                (CompletableFuture<T> f,
614 +                 CompletionStage<? extends U> g,
615 +                 BiFunction<? super T,? super U,? extends V> a) {
616 +                return f.thenCombine(g, a);
617 +            }
618 +            public <T> CompletableFuture<Void> runAfterEither
619 +                (CompletableFuture<T> f,
620 +                 CompletionStage<?> g,
621 +                 java.lang.Runnable a) {
622 +                return f.runAfterEither(g, a);
623 +            }
624 +            public <T> CompletableFuture<Void> acceptEither
625 +                (CompletableFuture<T> f,
626 +                 CompletionStage<? extends T> g,
627 +                 Consumer<? super T> a) {
628 +                return f.acceptEither(g, a);
629 +            }
630 +            public <T,U> CompletableFuture<U> applyToEither
631 +                (CompletableFuture<T> f,
632 +                 CompletionStage<? extends T> g,
633 +                 Function<? super T,U> a) {
634 +                return f.applyToEither(g, a);
635 +            }
636 +        },
637 +
638 +        ASYNC {
639 +            public void checkExecutionMode() {
640 +                assertEquals(defaultExecutorIsCommonPool,
641 +                             (ForkJoinPool.commonPool() == ForkJoinTask.getPool()));
642 +            }
643 +            public CompletableFuture<Void> runAsync(Runnable a) {
644 +                return CompletableFuture.runAsync(a);
645 +            }
646 +            public <U> CompletableFuture<U> supplyAsync(Supplier<U> a) {
647 +                return CompletableFuture.supplyAsync(a);
648 +            }
649 +            public <T> CompletableFuture<Void> thenRun
650 +                (CompletableFuture<T> f, Runnable a) {
651 +                return f.thenRunAsync(a);
652 +            }
653 +            public <T> CompletableFuture<Void> thenAccept
654 +                (CompletableFuture<T> f, Consumer<? super T> a) {
655 +                return f.thenAcceptAsync(a);
656 +            }
657 +            public <T,U> CompletableFuture<U> thenApply
658 +                (CompletableFuture<T> f, Function<? super T,U> a) {
659 +                return f.thenApplyAsync(a);
660 +            }
661 +            public <T,U> CompletableFuture<U> thenCompose
662 +                (CompletableFuture<T> f,
663 +                 Function<? super T,? extends CompletionStage<U>> a) {
664 +                return f.thenComposeAsync(a);
665 +            }
666 +            public <T,U> CompletableFuture<U> handle
667 +                (CompletableFuture<T> f,
668 +                 BiFunction<? super T,Throwable,? extends U> a) {
669 +                return f.handleAsync(a);
670 +            }
671 +            public <T> CompletableFuture<T> whenComplete
672 +                (CompletableFuture<T> f,
673 +                 BiConsumer<? super T,? super Throwable> a) {
674 +                return f.whenCompleteAsync(a);
675 +            }
676 +            public <T,U> CompletableFuture<Void> runAfterBoth
677 +                (CompletableFuture<T> f, CompletableFuture<U> g, Runnable a) {
678 +                return f.runAfterBothAsync(g, a);
679 +            }
680 +            public <T,U> CompletableFuture<Void> thenAcceptBoth
681 +                (CompletableFuture<T> f,
682 +                 CompletionStage<? extends U> g,
683 +                 BiConsumer<? super T,? super U> a) {
684 +                return f.thenAcceptBothAsync(g, a);
685 +            }
686 +            public <T,U,V> CompletableFuture<V> thenCombine
687 +                (CompletableFuture<T> f,
688 +                 CompletionStage<? extends U> g,
689 +                 BiFunction<? super T,? super U,? extends V> a) {
690 +                return f.thenCombineAsync(g, a);
691 +            }
692 +            public <T> CompletableFuture<Void> runAfterEither
693 +                (CompletableFuture<T> f,
694 +                 CompletionStage<?> g,
695 +                 java.lang.Runnable a) {
696 +                return f.runAfterEitherAsync(g, a);
697 +            }
698 +            public <T> CompletableFuture<Void> acceptEither
699 +                (CompletableFuture<T> f,
700 +                 CompletionStage<? extends T> g,
701 +                 Consumer<? super T> a) {
702 +                return f.acceptEitherAsync(g, a);
703 +            }
704 +            public <T,U> CompletableFuture<U> applyToEither
705 +                (CompletableFuture<T> f,
706 +                 CompletionStage<? extends T> g,
707 +                 Function<? super T,U> a) {
708 +                return f.applyToEitherAsync(g, a);
709 +            }
710 +        },
711 +
712 +        EXECUTOR {
713 +            public void checkExecutionMode() {
714 +                assertTrue(ThreadExecutor.startedCurrentThread());
715 +            }
716 +            public CompletableFuture<Void> runAsync(Runnable a) {
717 +                return CompletableFuture.runAsync(a, new ThreadExecutor());
718 +            }
719 +            public <U> CompletableFuture<U> supplyAsync(Supplier<U> a) {
720 +                return CompletableFuture.supplyAsync(a, new ThreadExecutor());
721 +            }
722 +            public <T> CompletableFuture<Void> thenRun
723 +                (CompletableFuture<T> f, Runnable a) {
724 +                return f.thenRunAsync(a, new ThreadExecutor());
725 +            }
726 +            public <T> CompletableFuture<Void> thenAccept
727 +                (CompletableFuture<T> f, Consumer<? super T> a) {
728 +                return f.thenAcceptAsync(a, new ThreadExecutor());
729 +            }
730 +            public <T,U> CompletableFuture<U> thenApply
731 +                (CompletableFuture<T> f, Function<? super T,U> a) {
732 +                return f.thenApplyAsync(a, new ThreadExecutor());
733 +            }
734 +            public <T,U> CompletableFuture<U> thenCompose
735 +                (CompletableFuture<T> f,
736 +                 Function<? super T,? extends CompletionStage<U>> a) {
737 +                return f.thenComposeAsync(a, new ThreadExecutor());
738 +            }
739 +            public <T,U> CompletableFuture<U> handle
740 +                (CompletableFuture<T> f,
741 +                 BiFunction<? super T,Throwable,? extends U> a) {
742 +                return f.handleAsync(a, new ThreadExecutor());
743 +            }
744 +            public <T> CompletableFuture<T> whenComplete
745 +                (CompletableFuture<T> f,
746 +                 BiConsumer<? super T,? super Throwable> a) {
747 +                return f.whenCompleteAsync(a, new ThreadExecutor());
748 +            }
749 +            public <T,U> CompletableFuture<Void> runAfterBoth
750 +                (CompletableFuture<T> f, CompletableFuture<U> g, Runnable a) {
751 +                return f.runAfterBothAsync(g, a, new ThreadExecutor());
752 +            }
753 +            public <T,U> CompletableFuture<Void> thenAcceptBoth
754 +                (CompletableFuture<T> f,
755 +                 CompletionStage<? extends U> g,
756 +                 BiConsumer<? super T,? super U> a) {
757 +                return f.thenAcceptBothAsync(g, a, new ThreadExecutor());
758 +            }
759 +            public <T,U,V> CompletableFuture<V> thenCombine
760 +                (CompletableFuture<T> f,
761 +                 CompletionStage<? extends U> g,
762 +                 BiFunction<? super T,? super U,? extends V> a) {
763 +                return f.thenCombineAsync(g, a, new ThreadExecutor());
764 +            }
765 +            public <T> CompletableFuture<Void> runAfterEither
766 +                (CompletableFuture<T> f,
767 +                 CompletionStage<?> g,
768 +                 java.lang.Runnable a) {
769 +                return f.runAfterEitherAsync(g, a, new ThreadExecutor());
770 +            }
771 +            public <T> CompletableFuture<Void> acceptEither
772 +                (CompletableFuture<T> f,
773 +                 CompletionStage<? extends T> g,
774 +                 Consumer<? super T> a) {
775 +                return f.acceptEitherAsync(g, a, new ThreadExecutor());
776 +            }
777 +            public <T,U> CompletableFuture<U> applyToEither
778 +                (CompletableFuture<T> f,
779 +                 CompletionStage<? extends T> g,
780 +                 Function<? super T,U> a) {
781 +                return f.applyToEitherAsync(g, a, new ThreadExecutor());
782 +            }
783 +        };
784 +
785 +        public abstract void checkExecutionMode();
786 +        public abstract CompletableFuture<Void> runAsync(Runnable a);
787 +        public abstract <U> CompletableFuture<U> supplyAsync(Supplier<U> a);
788 +        public abstract <T> CompletableFuture<Void> thenRun
789 +            (CompletableFuture<T> f, Runnable a);
790 +        public abstract <T> CompletableFuture<Void> thenAccept
791 +            (CompletableFuture<T> f, Consumer<? super T> a);
792 +        public abstract <T,U> CompletableFuture<U> thenApply
793 +            (CompletableFuture<T> f, Function<? super T,U> a);
794 +        public abstract <T,U> CompletableFuture<U> thenCompose
795 +            (CompletableFuture<T> f,
796 +             Function<? super T,? extends CompletionStage<U>> a);
797 +        public abstract <T,U> CompletableFuture<U> handle
798 +            (CompletableFuture<T> f,
799 +             BiFunction<? super T,Throwable,? extends U> a);
800 +        public abstract <T> CompletableFuture<T> whenComplete
801 +            (CompletableFuture<T> f,
802 +             BiConsumer<? super T,? super Throwable> a);
803 +        public abstract <T,U> CompletableFuture<Void> runAfterBoth
804 +            (CompletableFuture<T> f, CompletableFuture<U> g, Runnable a);
805 +        public abstract <T,U> CompletableFuture<Void> thenAcceptBoth
806 +            (CompletableFuture<T> f,
807 +             CompletionStage<? extends U> g,
808 +             BiConsumer<? super T,? super U> a);
809 +        public abstract <T,U,V> CompletableFuture<V> thenCombine
810 +            (CompletableFuture<T> f,
811 +             CompletionStage<? extends U> g,
812 +             BiFunction<? super T,? super U,? extends V> a);
813 +        public abstract <T> CompletableFuture<Void> runAfterEither
814 +            (CompletableFuture<T> f,
815 +             CompletionStage<?> g,
816 +             java.lang.Runnable a);
817 +        public abstract <T> CompletableFuture<Void> acceptEither
818 +            (CompletableFuture<T> f,
819 +             CompletionStage<? extends T> g,
820 +             Consumer<? super T> a);
821 +        public abstract <T,U> CompletableFuture<U> applyToEither
822 +            (CompletableFuture<T> f,
823 +             CompletionStage<? extends T> g,
824 +             Function<? super T,U> a);
825 +    }
826 +
827 +    /**
828 +     * exceptionally action is not invoked when source completes
829 +     * normally, and source result is propagated
830 +     */
831 +    public void testExceptionally_normalCompletion() {
832 +        for (boolean createIncomplete : new boolean[] { true, false })
833 +        for (Integer v1 : new Integer[] { 1, null })
834 +    {
835 +        final AtomicInteger a = new AtomicInteger(0);
836 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
837 +        if (!createIncomplete) assertTrue(f.complete(v1));
838 +        final CompletableFuture<Integer> g = f.exceptionally
839 +            ((Throwable t) -> {
840 +                a.getAndIncrement();
841 +                threadFail("should not be called");
842 +                return null;            // unreached
843 +            });
844 +        if (createIncomplete) assertTrue(f.complete(v1));
845 +
846 +        checkCompletedNormally(g, v1);
847 +        checkCompletedNormally(f, v1);
848 +        assertEquals(0, a.get());
849 +    }}
850 +
851 +    /**
852 +     * exceptionally action completes with function value on source
853 +     * exception
854 +     */
855 +    public void testExceptionally_exceptionalCompletion() {
856 +        for (boolean createIncomplete : new boolean[] { true, false })
857 +        for (Integer v1 : new Integer[] { 1, null })
858 +    {
859 +        final AtomicInteger a = new AtomicInteger(0);
860 +        final CFException ex = new CFException();
861 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
862 +        if (!createIncomplete) f.completeExceptionally(ex);
863 +        final CompletableFuture<Integer> g = f.exceptionally
864 +            ((Throwable t) -> {
865 +                ExecutionMode.SYNC.checkExecutionMode();
866 +                threadAssertSame(t, ex);
867 +                a.getAndIncrement();
868 +                return v1;
869 +            });
870 +        if (createIncomplete) f.completeExceptionally(ex);
871 +
872 +        checkCompletedNormally(g, v1);
873 +        assertEquals(1, a.get());
874 +    }}
875 +
876 +    public void testExceptionally_exceptionalCompletionActionFailed() {
877 +        for (boolean createIncomplete : new boolean[] { true, false })
878 +    {
879 +        final AtomicInteger a = new AtomicInteger(0);
880 +        final CFException ex1 = new CFException();
881 +        final CFException ex2 = new CFException();
882 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
883 +        if (!createIncomplete) f.completeExceptionally(ex1);
884 +        final CompletableFuture<Integer> g = f.exceptionally
885 +            ((Throwable t) -> {
886 +                ExecutionMode.SYNC.checkExecutionMode();
887 +                threadAssertSame(t, ex1);
888 +                a.getAndIncrement();
889 +                throw ex2;
890 +            });
891 +        if (createIncomplete) f.completeExceptionally(ex1);
892 +
893 +        checkCompletedWithWrappedException(g, ex2);
894 +        assertEquals(1, a.get());
895 +    }}
896 +
897 +    /**
898 +     * whenComplete action executes on normal completion, propagating
899 +     * source result.
900 +     */
901 +    public void testWhenComplete_normalCompletion() {
902 +        for (ExecutionMode m : ExecutionMode.values())
903 +        for (boolean createIncomplete : new boolean[] { true, false })
904 +        for (Integer v1 : new Integer[] { 1, null })
905 +    {
906 +        final AtomicInteger a = new AtomicInteger(0);
907 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
908 +        if (!createIncomplete) assertTrue(f.complete(v1));
909 +        final CompletableFuture<Integer> g = m.whenComplete
910 +            (f,
911 +             (Integer x, Throwable t) -> {
912 +                m.checkExecutionMode();
913 +                threadAssertSame(x, v1);
914 +                threadAssertNull(t);
915 +                a.getAndIncrement();
916 +            });
917 +        if (createIncomplete) assertTrue(f.complete(v1));
918 +
919 +        checkCompletedNormally(g, v1);
920 +        checkCompletedNormally(f, v1);
921 +        assertEquals(1, a.get());
922 +    }}
923 +
924 +    /**
925 +     * whenComplete action executes on exceptional completion, propagating
926 +     * source result.
927 +     */
928 +    public void testWhenComplete_exceptionalCompletion() {
929 +        for (ExecutionMode m : ExecutionMode.values())
930 +        for (boolean createIncomplete : new boolean[] { true, false })
931 +    {
932 +        final AtomicInteger a = new AtomicInteger(0);
933 +        final CFException ex = new CFException();
934 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
935 +        if (!createIncomplete) f.completeExceptionally(ex);
936 +        final CompletableFuture<Integer> g = m.whenComplete
937 +            (f,
938 +             (Integer x, Throwable t) -> {
939 +                m.checkExecutionMode();
940 +                threadAssertNull(x);
941 +                threadAssertSame(t, ex);
942 +                a.getAndIncrement();
943 +            });
944 +        if (createIncomplete) f.completeExceptionally(ex);
945 +
946 +        checkCompletedWithWrappedException(g, ex);
947 +        checkCompletedExceptionally(f, ex);
948 +        assertEquals(1, a.get());
949 +    }}
950 +
951 +    /**
952 +     * whenComplete action executes on cancelled source, propagating
953 +     * CancellationException.
954 +     */
955 +    public void testWhenComplete_sourceCancelled() {
956 +        for (ExecutionMode m : ExecutionMode.values())
957 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
958 +        for (boolean createIncomplete : new boolean[] { true, false })
959 +    {
960 +        final AtomicInteger a = new AtomicInteger(0);
961 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
962 +        if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
963 +        final CompletableFuture<Integer> g = m.whenComplete
964 +            (f,
965 +             (Integer x, Throwable t) -> {
966 +                m.checkExecutionMode();
967 +                threadAssertNull(x);
968 +                threadAssertTrue(t instanceof CancellationException);
969 +                a.getAndIncrement();
970 +            });
971 +        if (createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
972 +
973 +        checkCompletedWithWrappedCancellationException(g);
974 +        checkCancelled(f);
975 +        assertEquals(1, a.get());
976 +    }}
977 +
978 +    /**
979 +     * If a whenComplete action throws an exception when triggered by
980 +     * a normal completion, it completes exceptionally
981 +     */
982 +    public void testWhenComplete_actionFailed() {
983 +        for (boolean createIncomplete : new boolean[] { true, false })
984 +        for (ExecutionMode m : ExecutionMode.values())
985 +        for (Integer v1 : new Integer[] { 1, null })
986 +    {
987 +        final AtomicInteger a = new AtomicInteger(0);
988 +        final CFException ex = new CFException();
989 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
990 +        if (!createIncomplete) assertTrue(f.complete(v1));
991 +        final CompletableFuture<Integer> g = m.whenComplete
992 +            (f,
993 +             (Integer x, Throwable t) -> {
994 +                m.checkExecutionMode();
995 +                threadAssertSame(x, v1);
996 +                threadAssertNull(t);
997 +                a.getAndIncrement();
998 +                throw ex;
999 +            });
1000 +        if (createIncomplete) assertTrue(f.complete(v1));
1001 +
1002 +        checkCompletedWithWrappedException(g, ex);
1003 +        checkCompletedNormally(f, v1);
1004 +        assertEquals(1, a.get());
1005 +    }}
1006 +
1007 +    /**
1008 +     * If a whenComplete action throws an exception when triggered by
1009 +     * a source completion that also throws an exception, the source
1010 +     * exception takes precedence.
1011 +     */
1012 +    public void testWhenComplete_actionFailedSourceFailed() {
1013 +        for (boolean createIncomplete : new boolean[] { true, false })
1014 +        for (ExecutionMode m : ExecutionMode.values())
1015 +    {
1016 +        final AtomicInteger a = new AtomicInteger(0);
1017 +        final CFException ex1 = new CFException();
1018 +        final CFException ex2 = new CFException();
1019 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1020 +
1021 +        if (!createIncomplete) f.completeExceptionally(ex1);
1022 +        final CompletableFuture<Integer> g = m.whenComplete
1023 +            (f,
1024 +             (Integer x, Throwable t) -> {
1025 +                m.checkExecutionMode();
1026 +                threadAssertSame(t, ex1);
1027 +                threadAssertNull(x);
1028 +                a.getAndIncrement();
1029 +                throw ex2;
1030 +            });
1031 +        if (createIncomplete) f.completeExceptionally(ex1);
1032 +
1033 +        checkCompletedWithWrappedException(g, ex1);
1034 +        checkCompletedExceptionally(f, ex1);
1035 +        assertEquals(1, a.get());
1036 +    }}
1037 +
1038 +    /**
1039 +     * handle action completes normally with function value on normal
1040 +     * completion of source
1041 +     */
1042 +    public void testHandle_normalCompletion() {
1043 +        for (ExecutionMode m : ExecutionMode.values())
1044 +        for (boolean createIncomplete : new boolean[] { true, false })
1045 +        for (Integer v1 : new Integer[] { 1, null })
1046 +    {
1047 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1048 +        final AtomicInteger a = new AtomicInteger(0);
1049 +        if (!createIncomplete) assertTrue(f.complete(v1));
1050 +        final CompletableFuture<Integer> g = m.handle
1051 +            (f,
1052 +             (Integer x, Throwable t) -> {
1053 +                m.checkExecutionMode();
1054 +                threadAssertSame(x, v1);
1055 +                threadAssertNull(t);
1056 +                a.getAndIncrement();
1057 +                return inc(v1);
1058 +            });
1059 +        if (createIncomplete) assertTrue(f.complete(v1));
1060 +
1061 +        checkCompletedNormally(g, inc(v1));
1062 +        checkCompletedNormally(f, v1);
1063 +        assertEquals(1, a.get());
1064 +    }}
1065 +
1066 +    /**
1067 +     * handle action completes normally with function value on
1068 +     * exceptional completion of source
1069 +     */
1070 +    public void testHandle_exceptionalCompletion() {
1071 +        for (ExecutionMode m : ExecutionMode.values())
1072 +        for (boolean createIncomplete : new boolean[] { true, false })
1073 +        for (Integer v1 : new Integer[] { 1, null })
1074 +    {
1075 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1076 +        final AtomicInteger a = new AtomicInteger(0);
1077 +        final CFException ex = new CFException();
1078 +        if (!createIncomplete) f.completeExceptionally(ex);
1079 +        final CompletableFuture<Integer> g = m.handle
1080 +            (f,
1081 +             (Integer x, Throwable t) -> {
1082 +                m.checkExecutionMode();
1083 +                threadAssertNull(x);
1084 +                threadAssertSame(t, ex);
1085 +                a.getAndIncrement();
1086 +                return v1;
1087 +            });
1088 +        if (createIncomplete) f.completeExceptionally(ex);
1089 +
1090 +        checkCompletedNormally(g, v1);
1091 +        checkCompletedExceptionally(f, ex);
1092 +        assertEquals(1, a.get());
1093 +    }}
1094 +
1095 +    /**
1096 +     * handle action completes normally with function value on
1097 +     * cancelled source
1098 +     */
1099 +    public void testHandle_sourceCancelled() {
1100 +        for (ExecutionMode m : ExecutionMode.values())
1101 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1102 +        for (boolean createIncomplete : new boolean[] { true, false })
1103 +        for (Integer v1 : new Integer[] { 1, null })
1104 +    {
1105 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1106 +        final AtomicInteger a = new AtomicInteger(0);
1107 +        if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
1108 +        final CompletableFuture<Integer> g = m.handle
1109 +            (f,
1110 +             (Integer x, Throwable t) -> {
1111 +                m.checkExecutionMode();
1112 +                threadAssertNull(x);
1113 +                threadAssertTrue(t instanceof CancellationException);
1114 +                a.getAndIncrement();
1115 +                return v1;
1116 +            });
1117 +        if (createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
1118 +
1119 +        checkCompletedNormally(g, v1);
1120 +        checkCancelled(f);
1121 +        assertEquals(1, a.get());
1122 +    }}
1123 +
1124 +    /**
1125 +     * handle result completes exceptionally if action does
1126 +     */
1127 +    public void testHandle_sourceFailedActionFailed() {
1128 +        for (ExecutionMode m : ExecutionMode.values())
1129 +        for (boolean createIncomplete : new boolean[] { true, false })
1130 +    {
1131 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1132 +        final AtomicInteger a = new AtomicInteger(0);
1133 +        final CFException ex1 = new CFException();
1134 +        final CFException ex2 = new CFException();
1135 +        if (!createIncomplete) f.completeExceptionally(ex1);
1136 +        final CompletableFuture<Integer> g = m.handle
1137 +            (f,
1138 +             (Integer x, Throwable t) -> {
1139 +                m.checkExecutionMode();
1140 +                threadAssertNull(x);
1141 +                threadAssertSame(ex1, t);
1142 +                a.getAndIncrement();
1143 +                throw ex2;
1144 +            });
1145 +        if (createIncomplete) f.completeExceptionally(ex1);
1146 +
1147 +        checkCompletedWithWrappedException(g, ex2);
1148 +        checkCompletedExceptionally(f, ex1);
1149 +        assertEquals(1, a.get());
1150 +    }}
1151 +
1152 +    public void testHandle_sourceCompletedNormallyActionFailed() {
1153 +        for (ExecutionMode m : ExecutionMode.values())
1154 +        for (boolean createIncomplete : new boolean[] { true, false })
1155 +        for (Integer v1 : new Integer[] { 1, null })
1156 +    {
1157 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1158 +        final AtomicInteger a = new AtomicInteger(0);
1159 +        final CFException ex = new CFException();
1160 +        if (!createIncomplete) assertTrue(f.complete(v1));
1161 +        final CompletableFuture<Integer> g = m.handle
1162 +            (f,
1163 +             (Integer x, Throwable t) -> {
1164 +                m.checkExecutionMode();
1165 +                threadAssertSame(x, v1);
1166 +                threadAssertNull(t);
1167 +                a.getAndIncrement();
1168 +                throw ex;
1169 +            });
1170 +        if (createIncomplete) assertTrue(f.complete(v1));
1171 +
1172 +        checkCompletedWithWrappedException(g, ex);
1173 +        checkCompletedNormally(f, v1);
1174 +        assertEquals(1, a.get());
1175 +    }}
1176 +
1177 +    /**
1178 +     * runAsync completes after running Runnable
1179 +     */
1180 +    public void testRunAsync_normalCompletion() {
1181 +        ExecutionMode[] executionModes = {
1182 +            ExecutionMode.ASYNC,
1183 +            ExecutionMode.EXECUTOR,
1184 +        };
1185 +        for (ExecutionMode m : executionModes)
1186 +    {
1187 +        final Noop r = new Noop(m);
1188 +        final CompletableFuture<Void> f = m.runAsync(r);
1189 +        assertNull(f.join());
1190 +        checkCompletedNormally(f, null);
1191 +        r.assertInvoked();
1192 +    }}
1193 +
1194 +    /**
1195 +     * failing runAsync completes exceptionally after running Runnable
1196 +     */
1197 +    public void testRunAsync_exceptionalCompletion() {
1198 +        ExecutionMode[] executionModes = {
1199 +            ExecutionMode.ASYNC,
1200 +            ExecutionMode.EXECUTOR,
1201 +        };
1202 +        for (ExecutionMode m : executionModes)
1203 +    {
1204 +        final FailingRunnable r = new FailingRunnable(m);
1205 +        final CompletableFuture<Void> f = m.runAsync(r);
1206 +        checkCompletedWithWrappedCFException(f);
1207 +        r.assertInvoked();
1208 +    }}
1209 +
1210 +    /**
1211 +     * supplyAsync completes with result of supplier
1212 +     */
1213 +    public void testSupplyAsync_normalCompletion() {
1214 +        ExecutionMode[] executionModes = {
1215 +            ExecutionMode.ASYNC,
1216 +            ExecutionMode.EXECUTOR,
1217 +        };
1218 +        for (ExecutionMode m : executionModes)
1219 +        for (Integer v1 : new Integer[] { 1, null })
1220 +    {
1221 +        final IntegerSupplier r = new IntegerSupplier(m, v1);
1222 +        final CompletableFuture<Integer> f = m.supplyAsync(r);
1223 +        assertSame(v1, f.join());
1224 +        checkCompletedNormally(f, v1);
1225 +        r.assertInvoked();
1226 +    }}
1227 +
1228 +    /**
1229 +     * Failing supplyAsync completes exceptionally
1230 +     */
1231 +    public void testSupplyAsync_exceptionalCompletion() {
1232 +        ExecutionMode[] executionModes = {
1233 +            ExecutionMode.ASYNC,
1234 +            ExecutionMode.EXECUTOR,
1235 +        };
1236 +        for (ExecutionMode m : executionModes)
1237 +    {
1238 +        FailingSupplier r = new FailingSupplier(m);
1239 +        CompletableFuture<Integer> f = m.supplyAsync(r);
1240 +        checkCompletedWithWrappedCFException(f);
1241 +        r.assertInvoked();
1242 +    }}
1243 +
1244 +    // seq completion methods
1245 +
1246 +    /**
1247 +     * thenRun result completes normally after normal completion of source
1248 +     */
1249 +    public void testThenRun_normalCompletion() {
1250 +        for (ExecutionMode m : ExecutionMode.values())
1251 +        for (Integer v1 : new Integer[] { 1, null })
1252 +    {
1253 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1254 +        final Noop[] rs = new Noop[6];
1255 +        for (int i = 0; i < rs.length; i++) rs[i] = new Noop(m);
1256 +
1257 +        final CompletableFuture<Void> h0 = m.thenRun(f, rs[0]);
1258 +        final CompletableFuture<Void> h1 = m.runAfterBoth(f, f, rs[1]);
1259 +        final CompletableFuture<Void> h2 = m.runAfterEither(f, f, rs[2]);
1260 +        checkIncomplete(h0);
1261 +        checkIncomplete(h1);
1262 +        checkIncomplete(h2);
1263 +        assertTrue(f.complete(v1));
1264 +        final CompletableFuture<Void> h3 = m.thenRun(f, rs[3]);
1265 +        final CompletableFuture<Void> h4 = m.runAfterBoth(f, f, rs[4]);
1266 +        final CompletableFuture<Void> h5 = m.runAfterEither(f, f, rs[5]);
1267 +
1268 +        checkCompletedNormally(h0, null);
1269 +        checkCompletedNormally(h1, null);
1270 +        checkCompletedNormally(h2, null);
1271 +        checkCompletedNormally(h3, null);
1272 +        checkCompletedNormally(h4, null);
1273 +        checkCompletedNormally(h5, null);
1274 +        checkCompletedNormally(f, v1);
1275 +        for (Noop r : rs) r.assertInvoked();
1276 +    }}
1277 +
1278 +    /**
1279 +     * thenRun result completes exceptionally after exceptional
1280 +     * completion of source
1281 +     */
1282 +    public void testThenRun_exceptionalCompletion() {
1283 +        for (ExecutionMode m : ExecutionMode.values())
1284 +    {
1285 +        final CFException ex = new CFException();
1286 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1287 +        final Noop[] rs = new Noop[6];
1288 +        for (int i = 0; i < rs.length; i++) rs[i] = new Noop(m);
1289 +
1290 +        final CompletableFuture<Void> h0 = m.thenRun(f, rs[0]);
1291 +        final CompletableFuture<Void> h1 = m.runAfterBoth(f, f, rs[1]);
1292 +        final CompletableFuture<Void> h2 = m.runAfterEither(f, f, rs[2]);
1293 +        checkIncomplete(h0);
1294 +        checkIncomplete(h1);
1295 +        checkIncomplete(h2);
1296 +        assertTrue(f.completeExceptionally(ex));
1297 +        final CompletableFuture<Void> h3 = m.thenRun(f, rs[3]);
1298 +        final CompletableFuture<Void> h4 = m.runAfterBoth(f, f, rs[4]);
1299 +        final CompletableFuture<Void> h5 = m.runAfterEither(f, f, rs[5]);
1300 +
1301 +        checkCompletedWithWrappedException(h0, ex);
1302 +        checkCompletedWithWrappedException(h1, ex);
1303 +        checkCompletedWithWrappedException(h2, ex);
1304 +        checkCompletedWithWrappedException(h3, ex);
1305 +        checkCompletedWithWrappedException(h4, ex);
1306 +        checkCompletedWithWrappedException(h5, ex);
1307 +        checkCompletedExceptionally(f, ex);
1308 +        for (Noop r : rs) r.assertNotInvoked();
1309 +    }}
1310 +
1311 +    /**
1312 +     * thenRun result completes exceptionally if source cancelled
1313 +     */
1314 +    public void testThenRun_sourceCancelled() {
1315 +        for (ExecutionMode m : ExecutionMode.values())
1316 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1317 +    {
1318 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1319 +        final Noop[] rs = new Noop[6];
1320 +        for (int i = 0; i < rs.length; i++) rs[i] = new Noop(m);
1321 +
1322 +        final CompletableFuture<Void> h0 = m.thenRun(f, rs[0]);
1323 +        final CompletableFuture<Void> h1 = m.runAfterBoth(f, f, rs[1]);
1324 +        final CompletableFuture<Void> h2 = m.runAfterEither(f, f, rs[2]);
1325 +        checkIncomplete(h0);
1326 +        checkIncomplete(h1);
1327 +        checkIncomplete(h2);
1328 +        assertTrue(f.cancel(mayInterruptIfRunning));
1329 +        final CompletableFuture<Void> h3 = m.thenRun(f, rs[3]);
1330 +        final CompletableFuture<Void> h4 = m.runAfterBoth(f, f, rs[4]);
1331 +        final CompletableFuture<Void> h5 = m.runAfterEither(f, f, rs[5]);
1332 +
1333 +        checkCompletedWithWrappedCancellationException(h0);
1334 +        checkCompletedWithWrappedCancellationException(h1);
1335 +        checkCompletedWithWrappedCancellationException(h2);
1336 +        checkCompletedWithWrappedCancellationException(h3);
1337 +        checkCompletedWithWrappedCancellationException(h4);
1338 +        checkCompletedWithWrappedCancellationException(h5);
1339 +        checkCancelled(f);
1340 +        for (Noop r : rs) r.assertNotInvoked();
1341 +    }}
1342 +
1343 +    /**
1344 +     * thenRun result completes exceptionally if action does
1345 +     */
1346 +    public void testThenRun_actionFailed() {
1347 +        for (ExecutionMode m : ExecutionMode.values())
1348 +        for (Integer v1 : new Integer[] { 1, null })
1349 +    {
1350 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1351 +        final FailingRunnable[] rs = new FailingRunnable[6];
1352 +        for (int i = 0; i < rs.length; i++) rs[i] = new FailingRunnable(m);
1353 +
1354 +        final CompletableFuture<Void> h0 = m.thenRun(f, rs[0]);
1355 +        final CompletableFuture<Void> h1 = m.runAfterBoth(f, f, rs[1]);
1356 +        final CompletableFuture<Void> h2 = m.runAfterEither(f, f, rs[2]);
1357 +        assertTrue(f.complete(v1));
1358 +        final CompletableFuture<Void> h3 = m.thenRun(f, rs[3]);
1359 +        final CompletableFuture<Void> h4 = m.runAfterBoth(f, f, rs[4]);
1360 +        final CompletableFuture<Void> h5 = m.runAfterEither(f, f, rs[5]);
1361 +
1362 +        checkCompletedWithWrappedCFException(h0);
1363 +        checkCompletedWithWrappedCFException(h1);
1364 +        checkCompletedWithWrappedCFException(h2);
1365 +        checkCompletedWithWrappedCFException(h3);
1366 +        checkCompletedWithWrappedCFException(h4);
1367 +        checkCompletedWithWrappedCFException(h5);
1368 +        checkCompletedNormally(f, v1);
1369 +    }}
1370 +
1371 +    /**
1372 +     * thenApply result completes normally after normal completion of source
1373 +     */
1374 +    public void testThenApply_normalCompletion() {
1375 +        for (ExecutionMode m : ExecutionMode.values())
1376 +        for (Integer v1 : new Integer[] { 1, null })
1377 +    {
1378 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1379 +        final IncFunction[] rs = new IncFunction[4];
1380 +        for (int i = 0; i < rs.length; i++) rs[i] = new IncFunction(m);
1381 +
1382 +        final CompletableFuture<Integer> h0 = m.thenApply(f, rs[0]);
1383 +        final CompletableFuture<Integer> h1 = m.applyToEither(f, f, rs[1]);
1384 +        checkIncomplete(h0);
1385 +        checkIncomplete(h1);
1386 +        assertTrue(f.complete(v1));
1387 +        final CompletableFuture<Integer> h2 = m.thenApply(f, rs[2]);
1388 +        final CompletableFuture<Integer> h3 = m.applyToEither(f, f, rs[3]);
1389 +
1390 +        checkCompletedNormally(h0, inc(v1));
1391 +        checkCompletedNormally(h1, inc(v1));
1392 +        checkCompletedNormally(h2, inc(v1));
1393 +        checkCompletedNormally(h3, inc(v1));
1394 +        checkCompletedNormally(f, v1);
1395 +        for (IncFunction r : rs) r.assertValue(inc(v1));
1396 +    }}
1397 +
1398 +    /**
1399 +     * thenApply result completes exceptionally after exceptional
1400 +     * completion of source
1401 +     */
1402 +    public void testThenApply_exceptionalCompletion() {
1403 +        for (ExecutionMode m : ExecutionMode.values())
1404 +    {
1405 +        final CFException ex = new CFException();
1406 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1407 +        final IncFunction[] rs = new IncFunction[4];
1408 +        for (int i = 0; i < rs.length; i++) rs[i] = new IncFunction(m);
1409 +
1410 +        final CompletableFuture<Integer> h0 = m.thenApply(f, rs[0]);
1411 +        final CompletableFuture<Integer> h1 = m.applyToEither(f, f, rs[1]);
1412 +        assertTrue(f.completeExceptionally(ex));
1413 +        final CompletableFuture<Integer> h2 = m.thenApply(f, rs[2]);
1414 +        final CompletableFuture<Integer> h3 = m.applyToEither(f, f, rs[3]);
1415 +
1416 +        checkCompletedWithWrappedException(h0, ex);
1417 +        checkCompletedWithWrappedException(h1, ex);
1418 +        checkCompletedWithWrappedException(h2, ex);
1419 +        checkCompletedWithWrappedException(h3, ex);
1420 +        checkCompletedExceptionally(f, ex);
1421 +        for (IncFunction r : rs) r.assertNotInvoked();
1422 +    }}
1423 +
1424 +    /**
1425 +     * thenApply result completes exceptionally if source cancelled
1426 +     */
1427 +    public void testThenApply_sourceCancelled() {
1428 +        for (ExecutionMode m : ExecutionMode.values())
1429 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1430 +    {
1431 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1432 +        final IncFunction[] rs = new IncFunction[4];
1433 +        for (int i = 0; i < rs.length; i++) rs[i] = new IncFunction(m);
1434 +
1435 +        final CompletableFuture<Integer> h0 = m.thenApply(f, rs[0]);
1436 +        final CompletableFuture<Integer> h1 = m.applyToEither(f, f, rs[1]);
1437 +        assertTrue(f.cancel(mayInterruptIfRunning));
1438 +        final CompletableFuture<Integer> h2 = m.thenApply(f, rs[2]);
1439 +        final CompletableFuture<Integer> h3 = m.applyToEither(f, f, rs[3]);
1440 +
1441 +        checkCompletedWithWrappedCancellationException(h0);
1442 +        checkCompletedWithWrappedCancellationException(h1);
1443 +        checkCompletedWithWrappedCancellationException(h2);
1444 +        checkCompletedWithWrappedCancellationException(h3);
1445 +        checkCancelled(f);
1446 +        for (IncFunction r : rs) r.assertNotInvoked();
1447 +    }}
1448 +
1449 +    /**
1450 +     * thenApply result completes exceptionally if action does
1451 +     */
1452 +    public void testThenApply_actionFailed() {
1453 +        for (ExecutionMode m : ExecutionMode.values())
1454 +        for (Integer v1 : new Integer[] { 1, null })
1455 +    {
1456 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1457 +        final FailingFunction[] rs = new FailingFunction[4];
1458 +        for (int i = 0; i < rs.length; i++) rs[i] = new FailingFunction(m);
1459 +
1460 +        final CompletableFuture<Integer> h0 = m.thenApply(f, rs[0]);
1461 +        final CompletableFuture<Integer> h1 = m.applyToEither(f, f, rs[1]);
1462 +        assertTrue(f.complete(v1));
1463 +        final CompletableFuture<Integer> h2 = m.thenApply(f, rs[2]);
1464 +        final CompletableFuture<Integer> h3 = m.applyToEither(f, f, rs[3]);
1465 +
1466 +        checkCompletedWithWrappedCFException(h0);
1467 +        checkCompletedWithWrappedCFException(h1);
1468 +        checkCompletedWithWrappedCFException(h2);
1469 +        checkCompletedWithWrappedCFException(h3);
1470 +        checkCompletedNormally(f, v1);
1471 +    }}
1472 +
1473 +    /**
1474 +     * thenAccept result completes normally after normal completion of source
1475 +     */
1476 +    public void testThenAccept_normalCompletion() {
1477 +        for (ExecutionMode m : ExecutionMode.values())
1478 +        for (Integer v1 : new Integer[] { 1, null })
1479 +    {
1480 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1481 +        final NoopConsumer[] rs = new NoopConsumer[4];
1482 +        for (int i = 0; i < rs.length; i++) rs[i] = new NoopConsumer(m);
1483 +
1484 +        final CompletableFuture<Void> h0 = m.thenAccept(f, rs[0]);
1485 +        final CompletableFuture<Void> h1 = m.acceptEither(f, f, rs[1]);
1486 +        checkIncomplete(h0);
1487 +        checkIncomplete(h1);
1488 +        assertTrue(f.complete(v1));
1489 +        final CompletableFuture<Void> h2 = m.thenAccept(f, rs[2]);
1490 +        final CompletableFuture<Void> h3 = m.acceptEither(f, f, rs[3]);
1491 +
1492 +        checkCompletedNormally(h0, null);
1493 +        checkCompletedNormally(h1, null);
1494 +        checkCompletedNormally(h2, null);
1495 +        checkCompletedNormally(h3, null);
1496 +        checkCompletedNormally(f, v1);
1497 +        for (NoopConsumer r : rs) r.assertValue(v1);
1498 +    }}
1499 +
1500 +    /**
1501 +     * thenAccept result completes exceptionally after exceptional
1502 +     * completion of source
1503 +     */
1504 +    public void testThenAccept_exceptionalCompletion() {
1505 +        for (ExecutionMode m : ExecutionMode.values())
1506 +    {
1507 +        final CFException ex = new CFException();
1508 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1509 +        final NoopConsumer[] rs = new NoopConsumer[4];
1510 +        for (int i = 0; i < rs.length; i++) rs[i] = new NoopConsumer(m);
1511 +
1512 +        final CompletableFuture<Void> h0 = m.thenAccept(f, rs[0]);
1513 +        final CompletableFuture<Void> h1 = m.acceptEither(f, f, rs[1]);
1514 +        assertTrue(f.completeExceptionally(ex));
1515 +        final CompletableFuture<Void> h2 = m.thenAccept(f, rs[2]);
1516 +        final CompletableFuture<Void> h3 = m.acceptEither(f, f, rs[3]);
1517 +
1518 +        checkCompletedWithWrappedException(h0, ex);
1519 +        checkCompletedWithWrappedException(h1, ex);
1520 +        checkCompletedWithWrappedException(h2, ex);
1521 +        checkCompletedWithWrappedException(h3, ex);
1522 +        checkCompletedExceptionally(f, ex);
1523 +        for (NoopConsumer r : rs) r.assertNotInvoked();
1524 +    }}
1525 +
1526 +    /**
1527 +     * thenAccept result completes exceptionally if source cancelled
1528 +     */
1529 +    public void testThenAccept_sourceCancelled() {
1530 +        for (ExecutionMode m : ExecutionMode.values())
1531 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1532 +    {
1533 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1534 +        final NoopConsumer[] rs = new NoopConsumer[4];
1535 +        for (int i = 0; i < rs.length; i++) rs[i] = new NoopConsumer(m);
1536 +
1537 +        final CompletableFuture<Void> h0 = m.thenAccept(f, rs[0]);
1538 +        final CompletableFuture<Void> h1 = m.acceptEither(f, f, rs[1]);
1539 +        assertTrue(f.cancel(mayInterruptIfRunning));
1540 +        final CompletableFuture<Void> h2 = m.thenAccept(f, rs[2]);
1541 +        final CompletableFuture<Void> h3 = m.acceptEither(f, f, rs[3]);
1542 +
1543 +        checkCompletedWithWrappedCancellationException(h0);
1544 +        checkCompletedWithWrappedCancellationException(h1);
1545 +        checkCompletedWithWrappedCancellationException(h2);
1546 +        checkCompletedWithWrappedCancellationException(h3);
1547 +        checkCancelled(f);
1548 +        for (NoopConsumer r : rs) r.assertNotInvoked();
1549 +    }}
1550 +
1551 +    /**
1552 +     * thenAccept result completes exceptionally if action does
1553 +     */
1554 +    public void testThenAccept_actionFailed() {
1555 +        for (ExecutionMode m : ExecutionMode.values())
1556 +        for (Integer v1 : new Integer[] { 1, null })
1557 +    {
1558 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1559 +        final FailingConsumer[] rs = new FailingConsumer[4];
1560 +        for (int i = 0; i < rs.length; i++) rs[i] = new FailingConsumer(m);
1561 +
1562 +        final CompletableFuture<Void> h0 = m.thenAccept(f, rs[0]);
1563 +        final CompletableFuture<Void> h1 = m.acceptEither(f, f, rs[1]);
1564 +        assertTrue(f.complete(v1));
1565 +        final CompletableFuture<Void> h2 = m.thenAccept(f, rs[2]);
1566 +        final CompletableFuture<Void> h3 = m.acceptEither(f, f, rs[3]);
1567 +
1568 +        checkCompletedWithWrappedCFException(h0);
1569 +        checkCompletedWithWrappedCFException(h1);
1570 +        checkCompletedWithWrappedCFException(h2);
1571 +        checkCompletedWithWrappedCFException(h3);
1572 +        checkCompletedNormally(f, v1);
1573 +    }}
1574 +
1575 +    /**
1576 +     * thenCombine result completes normally after normal completion
1577 +     * of sources
1578 +     */
1579 +    public void testThenCombine_normalCompletion() {
1580 +        for (ExecutionMode m : ExecutionMode.values())
1581 +        for (boolean fFirst : new boolean[] { true, false })
1582 +        for (Integer v1 : new Integer[] { 1, null })
1583 +        for (Integer v2 : new Integer[] { 2, null })
1584 +    {
1585 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1586 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1587 +        final SubtractFunction[] rs = new SubtractFunction[6];
1588 +        for (int i = 0; i < rs.length; i++) rs[i] = new SubtractFunction(m);
1589 +
1590 +        final CompletableFuture<Integer> fst =  fFirst ? f : g;
1591 +        final CompletableFuture<Integer> snd = !fFirst ? f : g;
1592 +        final Integer w1 =  fFirst ? v1 : v2;
1593 +        final Integer w2 = !fFirst ? v1 : v2;
1594 +
1595 +        final CompletableFuture<Integer> h0 = m.thenCombine(f, g, rs[0]);
1596 +        final CompletableFuture<Integer> h1 = m.thenCombine(fst, fst, rs[1]);
1597 +        assertTrue(fst.complete(w1));
1598 +        final CompletableFuture<Integer> h2 = m.thenCombine(f, g, rs[2]);
1599 +        final CompletableFuture<Integer> h3 = m.thenCombine(fst, fst, rs[3]);
1600 +        checkIncomplete(h0); rs[0].assertNotInvoked();
1601 +        checkIncomplete(h2); rs[2].assertNotInvoked();
1602 +        checkCompletedNormally(h1, subtract(w1, w1));
1603 +        checkCompletedNormally(h3, subtract(w1, w1));
1604 +        rs[1].assertValue(subtract(w1, w1));
1605 +        rs[3].assertValue(subtract(w1, w1));
1606 +        assertTrue(snd.complete(w2));
1607 +        final CompletableFuture<Integer> h4 = m.thenCombine(f, g, rs[4]);
1608 +
1609 +        checkCompletedNormally(h0, subtract(v1, v2));
1610 +        checkCompletedNormally(h2, subtract(v1, v2));
1611 +        checkCompletedNormally(h4, subtract(v1, v2));
1612 +        rs[0].assertValue(subtract(v1, v2));
1613 +        rs[2].assertValue(subtract(v1, v2));
1614 +        rs[4].assertValue(subtract(v1, v2));
1615 +
1616 +        checkCompletedNormally(f, v1);
1617 +        checkCompletedNormally(g, v2);
1618 +    }}
1619 +
1620 +    /**
1621 +     * thenCombine result completes exceptionally after exceptional
1622 +     * completion of either source
1623 +     */
1624 +    public void testThenCombine_exceptionalCompletion() throws Throwable {
1625 +        for (ExecutionMode m : ExecutionMode.values())
1626 +        for (boolean fFirst : new boolean[] { true, false })
1627 +        for (boolean failFirst : new boolean[] { true, false })
1628 +        for (Integer v1 : new Integer[] { 1, null })
1629 +    {
1630 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1631 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1632 +        final CFException ex = new CFException();
1633 +        final SubtractFunction r1 = new SubtractFunction(m);
1634 +        final SubtractFunction r2 = new SubtractFunction(m);
1635 +        final SubtractFunction r3 = new SubtractFunction(m);
1636 +
1637 +        final CompletableFuture<Integer> fst =  fFirst ? f : g;
1638 +        final CompletableFuture<Integer> snd = !fFirst ? f : g;
1639 +        final Callable<Boolean> complete1 = failFirst ?
1640 +            () -> fst.completeExceptionally(ex) :
1641 +            () -> fst.complete(v1);
1642 +        final Callable<Boolean> complete2 = failFirst ?
1643 +            () -> snd.complete(v1) :
1644 +            () -> snd.completeExceptionally(ex);
1645 +
1646 +        final CompletableFuture<Integer> h1 = m.thenCombine(f, g, r1);
1647 +        assertTrue(complete1.call());
1648 +        final CompletableFuture<Integer> h2 = m.thenCombine(f, g, r2);
1649 +        checkIncomplete(h1);
1650 +        checkIncomplete(h2);
1651 +        assertTrue(complete2.call());
1652 +        final CompletableFuture<Integer> h3 = m.thenCombine(f, g, r3);
1653 +
1654 +        checkCompletedWithWrappedException(h1, ex);
1655 +        checkCompletedWithWrappedException(h2, ex);
1656 +        checkCompletedWithWrappedException(h3, ex);
1657 +        r1.assertNotInvoked();
1658 +        r2.assertNotInvoked();
1659 +        r3.assertNotInvoked();
1660 +        checkCompletedNormally(failFirst ? snd : fst, v1);
1661 +        checkCompletedExceptionally(failFirst ? fst : snd, ex);
1662 +    }}
1663 +
1664 +    /**
1665 +     * thenCombine result completes exceptionally if either source cancelled
1666 +     */
1667 +    public void testThenCombine_sourceCancelled() throws Throwable {
1668 +        for (ExecutionMode m : ExecutionMode.values())
1669 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1670 +        for (boolean fFirst : new boolean[] { true, false })
1671 +        for (boolean failFirst : new boolean[] { true, false })
1672 +        for (Integer v1 : new Integer[] { 1, null })
1673 +    {
1674 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1675 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1676 +        final SubtractFunction r1 = new SubtractFunction(m);
1677 +        final SubtractFunction r2 = new SubtractFunction(m);
1678 +        final SubtractFunction r3 = new SubtractFunction(m);
1679 +
1680 +        final CompletableFuture<Integer> fst =  fFirst ? f : g;
1681 +        final CompletableFuture<Integer> snd = !fFirst ? f : g;
1682 +        final Callable<Boolean> complete1 = failFirst ?
1683 +            () -> fst.cancel(mayInterruptIfRunning) :
1684 +            () -> fst.complete(v1);
1685 +        final Callable<Boolean> complete2 = failFirst ?
1686 +            () -> snd.complete(v1) :
1687 +            () -> snd.cancel(mayInterruptIfRunning);
1688 +
1689 +        final CompletableFuture<Integer> h1 = m.thenCombine(f, g, r1);
1690 +        assertTrue(complete1.call());
1691 +        final CompletableFuture<Integer> h2 = m.thenCombine(f, g, r2);
1692 +        checkIncomplete(h1);
1693 +        checkIncomplete(h2);
1694 +        assertTrue(complete2.call());
1695 +        final CompletableFuture<Integer> h3 = m.thenCombine(f, g, r3);
1696 +
1697 +        checkCompletedWithWrappedCancellationException(h1);
1698 +        checkCompletedWithWrappedCancellationException(h2);
1699 +        checkCompletedWithWrappedCancellationException(h3);
1700 +        r1.assertNotInvoked();
1701 +        r2.assertNotInvoked();
1702 +        r3.assertNotInvoked();
1703 +        checkCompletedNormally(failFirst ? snd : fst, v1);
1704 +        checkCancelled(failFirst ? fst : snd);
1705 +    }}
1706 +
1707 +    /**
1708 +     * thenCombine result completes exceptionally if action does
1709 +     */
1710 +    public void testThenCombine_actionFailed() {
1711 +        for (ExecutionMode m : ExecutionMode.values())
1712 +        for (boolean fFirst : new boolean[] { true, false })
1713 +        for (Integer v1 : new Integer[] { 1, null })
1714 +        for (Integer v2 : new Integer[] { 2, null })
1715 +    {
1716 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1717 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1718 +        final FailingBiFunction r1 = new FailingBiFunction(m);
1719 +        final FailingBiFunction r2 = new FailingBiFunction(m);
1720 +        final FailingBiFunction r3 = new FailingBiFunction(m);
1721 +
1722 +        final CompletableFuture<Integer> fst =  fFirst ? f : g;
1723 +        final CompletableFuture<Integer> snd = !fFirst ? f : g;
1724 +        final Integer w1 =  fFirst ? v1 : v2;
1725 +        final Integer w2 = !fFirst ? v1 : v2;
1726 +
1727 +        final CompletableFuture<Integer> h1 = m.thenCombine(f, g, r1);
1728 +        assertTrue(fst.complete(w1));
1729 +        final CompletableFuture<Integer> h2 = m.thenCombine(f, g, r2);
1730 +        assertTrue(snd.complete(w2));
1731 +        final CompletableFuture<Integer> h3 = m.thenCombine(f, g, r3);
1732 +
1733 +        checkCompletedWithWrappedCFException(h1);
1734 +        checkCompletedWithWrappedCFException(h2);
1735 +        checkCompletedWithWrappedCFException(h3);
1736 +        r1.assertInvoked();
1737 +        r2.assertInvoked();
1738 +        r3.assertInvoked();
1739 +        checkCompletedNormally(f, v1);
1740 +        checkCompletedNormally(g, v2);
1741 +    }}
1742 +
1743 +    /**
1744 +     * thenAcceptBoth result completes normally after normal
1745 +     * completion of sources
1746 +     */
1747 +    public void testThenAcceptBoth_normalCompletion() {
1748 +        for (ExecutionMode m : ExecutionMode.values())
1749 +        for (boolean fFirst : new boolean[] { true, false })
1750 +        for (Integer v1 : new Integer[] { 1, null })
1751 +        for (Integer v2 : new Integer[] { 2, null })
1752 +    {
1753 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1754 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1755 +        final SubtractAction r1 = new SubtractAction(m);
1756 +        final SubtractAction r2 = new SubtractAction(m);
1757 +        final SubtractAction r3 = new SubtractAction(m);
1758 +
1759 +        final CompletableFuture<Integer> fst =  fFirst ? f : g;
1760 +        final CompletableFuture<Integer> snd = !fFirst ? f : g;
1761 +        final Integer w1 =  fFirst ? v1 : v2;
1762 +        final Integer w2 = !fFirst ? v1 : v2;
1763 +
1764 +        final CompletableFuture<Void> h1 = m.thenAcceptBoth(f, g, r1);
1765 +        assertTrue(fst.complete(w1));
1766 +        final CompletableFuture<Void> h2 = m.thenAcceptBoth(f, g, r2);
1767 +        checkIncomplete(h1);
1768 +        checkIncomplete(h2);
1769 +        r1.assertNotInvoked();
1770 +        r2.assertNotInvoked();
1771 +        assertTrue(snd.complete(w2));
1772 +        final CompletableFuture<Void> h3 = m.thenAcceptBoth(f, g, r3);
1773 +
1774 +        checkCompletedNormally(h1, null);
1775 +        checkCompletedNormally(h2, null);
1776 +        checkCompletedNormally(h3, null);
1777 +        r1.assertValue(subtract(v1, v2));
1778 +        r2.assertValue(subtract(v1, v2));
1779 +        r3.assertValue(subtract(v1, v2));
1780 +        checkCompletedNormally(f, v1);
1781 +        checkCompletedNormally(g, v2);
1782 +    }}
1783 +
1784 +    /**
1785 +     * thenAcceptBoth result completes exceptionally after exceptional
1786 +     * completion of either source
1787 +     */
1788 +    public void testThenAcceptBoth_exceptionalCompletion() throws Throwable {
1789 +        for (ExecutionMode m : ExecutionMode.values())
1790 +        for (boolean fFirst : new boolean[] { true, false })
1791 +        for (boolean failFirst : new boolean[] { true, false })
1792 +        for (Integer v1 : new Integer[] { 1, null })
1793 +    {
1794 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1795 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1796 +        final CFException ex = new CFException();
1797 +        final SubtractAction r1 = new SubtractAction(m);
1798 +        final SubtractAction r2 = new SubtractAction(m);
1799 +        final SubtractAction r3 = new SubtractAction(m);
1800 +
1801 +        final CompletableFuture<Integer> fst =  fFirst ? f : g;
1802 +        final CompletableFuture<Integer> snd = !fFirst ? f : g;
1803 +        final Callable<Boolean> complete1 = failFirst ?
1804 +            () -> fst.completeExceptionally(ex) :
1805 +            () -> fst.complete(v1);
1806 +        final Callable<Boolean> complete2 = failFirst ?
1807 +            () -> snd.complete(v1) :
1808 +            () -> snd.completeExceptionally(ex);
1809 +
1810 +        final CompletableFuture<Void> h1 = m.thenAcceptBoth(f, g, r1);
1811 +        assertTrue(complete1.call());
1812 +        final CompletableFuture<Void> h2 = m.thenAcceptBoth(f, g, r2);
1813 +        checkIncomplete(h1);
1814 +        checkIncomplete(h2);
1815 +        assertTrue(complete2.call());
1816 +        final CompletableFuture<Void> h3 = m.thenAcceptBoth(f, g, r3);
1817 +
1818 +        checkCompletedWithWrappedException(h1, ex);
1819 +        checkCompletedWithWrappedException(h2, ex);
1820 +        checkCompletedWithWrappedException(h3, ex);
1821 +        r1.assertNotInvoked();
1822 +        r2.assertNotInvoked();
1823 +        r3.assertNotInvoked();
1824 +        checkCompletedNormally(failFirst ? snd : fst, v1);
1825 +        checkCompletedExceptionally(failFirst ? fst : snd, ex);
1826 +    }}
1827 +
1828 +    /**
1829 +     * thenAcceptBoth result completes exceptionally if either source cancelled
1830 +     */
1831 +    public void testThenAcceptBoth_sourceCancelled() throws Throwable {
1832 +        for (ExecutionMode m : ExecutionMode.values())
1833 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1834 +        for (boolean fFirst : new boolean[] { true, false })
1835 +        for (boolean failFirst : new boolean[] { true, false })
1836 +        for (Integer v1 : new Integer[] { 1, null })
1837 +    {
1838 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1839 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1840 +        final SubtractAction r1 = new SubtractAction(m);
1841 +        final SubtractAction r2 = new SubtractAction(m);
1842 +        final SubtractAction r3 = new SubtractAction(m);
1843 +
1844 +        final CompletableFuture<Integer> fst =  fFirst ? f : g;
1845 +        final CompletableFuture<Integer> snd = !fFirst ? f : g;
1846 +        final Callable<Boolean> complete1 = failFirst ?
1847 +            () -> fst.cancel(mayInterruptIfRunning) :
1848 +            () -> fst.complete(v1);
1849 +        final Callable<Boolean> complete2 = failFirst ?
1850 +            () -> snd.complete(v1) :
1851 +            () -> snd.cancel(mayInterruptIfRunning);
1852 +
1853 +        final CompletableFuture<Void> h1 = m.thenAcceptBoth(f, g, r1);
1854 +        assertTrue(complete1.call());
1855 +        final CompletableFuture<Void> h2 = m.thenAcceptBoth(f, g, r2);
1856 +        checkIncomplete(h1);
1857 +        checkIncomplete(h2);
1858 +        assertTrue(complete2.call());
1859 +        final CompletableFuture<Void> h3 = m.thenAcceptBoth(f, g, r3);
1860 +
1861 +        checkCompletedWithWrappedCancellationException(h1);
1862 +        checkCompletedWithWrappedCancellationException(h2);
1863 +        checkCompletedWithWrappedCancellationException(h3);
1864 +        r1.assertNotInvoked();
1865 +        r2.assertNotInvoked();
1866 +        r3.assertNotInvoked();
1867 +        checkCompletedNormally(failFirst ? snd : fst, v1);
1868 +        checkCancelled(failFirst ? fst : snd);
1869 +    }}
1870 +
1871 +    /**
1872 +     * thenAcceptBoth result completes exceptionally if action does
1873 +     */
1874 +    public void testThenAcceptBoth_actionFailed() {
1875 +        for (ExecutionMode m : ExecutionMode.values())
1876 +        for (boolean fFirst : new boolean[] { true, false })
1877 +        for (Integer v1 : new Integer[] { 1, null })
1878 +        for (Integer v2 : new Integer[] { 2, null })
1879 +    {
1880 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1881 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1882 +        final FailingBiConsumer r1 = new FailingBiConsumer(m);
1883 +        final FailingBiConsumer r2 = new FailingBiConsumer(m);
1884 +        final FailingBiConsumer r3 = new FailingBiConsumer(m);
1885 +
1886 +        final CompletableFuture<Integer> fst =  fFirst ? f : g;
1887 +        final CompletableFuture<Integer> snd = !fFirst ? f : g;
1888 +        final Integer w1 =  fFirst ? v1 : v2;
1889 +        final Integer w2 = !fFirst ? v1 : v2;
1890 +
1891 +        final CompletableFuture<Void> h1 = m.thenAcceptBoth(f, g, r1);
1892 +        assertTrue(fst.complete(w1));
1893 +        final CompletableFuture<Void> h2 = m.thenAcceptBoth(f, g, r2);
1894 +        assertTrue(snd.complete(w2));
1895 +        final CompletableFuture<Void> h3 = m.thenAcceptBoth(f, g, r3);
1896 +
1897 +        checkCompletedWithWrappedCFException(h1);
1898 +        checkCompletedWithWrappedCFException(h2);
1899 +        checkCompletedWithWrappedCFException(h3);
1900 +        r1.assertInvoked();
1901 +        r2.assertInvoked();
1902 +        r3.assertInvoked();
1903 +        checkCompletedNormally(f, v1);
1904 +        checkCompletedNormally(g, v2);
1905 +    }}
1906 +
1907 +    /**
1908 +     * runAfterBoth result completes normally after normal
1909 +     * completion of sources
1910 +     */
1911 +    public void testRunAfterBoth_normalCompletion() {
1912 +        for (ExecutionMode m : ExecutionMode.values())
1913 +        for (boolean fFirst : new boolean[] { true, false })
1914 +        for (Integer v1 : new Integer[] { 1, null })
1915 +        for (Integer v2 : new Integer[] { 2, null })
1916 +    {
1917 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1918 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1919 +        final Noop r1 = new Noop(m);
1920 +        final Noop r2 = new Noop(m);
1921 +        final Noop r3 = new Noop(m);
1922 +
1923 +        final CompletableFuture<Integer> fst =  fFirst ? f : g;
1924 +        final CompletableFuture<Integer> snd = !fFirst ? f : g;
1925 +        final Integer w1 =  fFirst ? v1 : v2;
1926 +        final Integer w2 = !fFirst ? v1 : v2;
1927 +
1928 +        final CompletableFuture<Void> h1 = m.runAfterBoth(f, g, r1);
1929 +        assertTrue(fst.complete(w1));
1930 +        final CompletableFuture<Void> h2 = m.runAfterBoth(f, g, r2);
1931 +        checkIncomplete(h1);
1932 +        checkIncomplete(h2);
1933 +        r1.assertNotInvoked();
1934 +        r2.assertNotInvoked();
1935 +        assertTrue(snd.complete(w2));
1936 +        final CompletableFuture<Void> h3 = m.runAfterBoth(f, g, r3);
1937 +
1938 +        checkCompletedNormally(h1, null);
1939 +        checkCompletedNormally(h2, null);
1940 +        checkCompletedNormally(h3, null);
1941 +        r1.assertInvoked();
1942 +        r2.assertInvoked();
1943 +        r3.assertInvoked();
1944 +        checkCompletedNormally(f, v1);
1945 +        checkCompletedNormally(g, v2);
1946 +    }}
1947 +
1948 +    /**
1949 +     * runAfterBoth result completes exceptionally after exceptional
1950 +     * completion of either source
1951 +     */
1952 +    public void testRunAfterBoth_exceptionalCompletion() throws Throwable {
1953 +        for (ExecutionMode m : ExecutionMode.values())
1954 +        for (boolean fFirst : new boolean[] { true, false })
1955 +        for (boolean failFirst : new boolean[] { true, false })
1956 +        for (Integer v1 : new Integer[] { 1, null })
1957 +    {
1958 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1959 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1960 +        final CFException ex = new CFException();
1961 +        final Noop r1 = new Noop(m);
1962 +        final Noop r2 = new Noop(m);
1963 +        final Noop r3 = new Noop(m);
1964 +
1965 +        final CompletableFuture<Integer> fst =  fFirst ? f : g;
1966 +        final CompletableFuture<Integer> snd = !fFirst ? f : g;
1967 +        final Callable<Boolean> complete1 = failFirst ?
1968 +            () -> fst.completeExceptionally(ex) :
1969 +            () -> fst.complete(v1);
1970 +        final Callable<Boolean> complete2 = failFirst ?
1971 +            () -> snd.complete(v1) :
1972 +            () -> snd.completeExceptionally(ex);
1973 +
1974 +        final CompletableFuture<Void> h1 = m.runAfterBoth(f, g, r1);
1975 +        assertTrue(complete1.call());
1976 +        final CompletableFuture<Void> h2 = m.runAfterBoth(f, g, r2);
1977 +        checkIncomplete(h1);
1978 +        checkIncomplete(h2);
1979 +        assertTrue(complete2.call());
1980 +        final CompletableFuture<Void> h3 = m.runAfterBoth(f, g, r3);
1981 +
1982 +        checkCompletedWithWrappedException(h1, ex);
1983 +        checkCompletedWithWrappedException(h2, ex);
1984 +        checkCompletedWithWrappedException(h3, ex);
1985 +        r1.assertNotInvoked();
1986 +        r2.assertNotInvoked();
1987 +        r3.assertNotInvoked();
1988 +        checkCompletedNormally(failFirst ? snd : fst, v1);
1989 +        checkCompletedExceptionally(failFirst ? fst : snd, ex);
1990 +    }}
1991 +
1992 +    /**
1993 +     * runAfterBoth result completes exceptionally if either source cancelled
1994 +     */
1995 +    public void testRunAfterBoth_sourceCancelled() throws Throwable {
1996 +        for (ExecutionMode m : ExecutionMode.values())
1997 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1998 +        for (boolean fFirst : new boolean[] { true, false })
1999 +        for (boolean failFirst : new boolean[] { true, false })
2000 +        for (Integer v1 : new Integer[] { 1, null })
2001 +    {
2002 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2003 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2004 +        final Noop r1 = new Noop(m);
2005 +        final Noop r2 = new Noop(m);
2006 +        final Noop r3 = new Noop(m);
2007 +
2008 +        final CompletableFuture<Integer> fst =  fFirst ? f : g;
2009 +        final CompletableFuture<Integer> snd = !fFirst ? f : g;
2010 +        final Callable<Boolean> complete1 = failFirst ?
2011 +            () -> fst.cancel(mayInterruptIfRunning) :
2012 +            () -> fst.complete(v1);
2013 +        final Callable<Boolean> complete2 = failFirst ?
2014 +            () -> snd.complete(v1) :
2015 +            () -> snd.cancel(mayInterruptIfRunning);
2016 +
2017 +        final CompletableFuture<Void> h1 = m.runAfterBoth(f, g, r1);
2018 +        assertTrue(complete1.call());
2019 +        final CompletableFuture<Void> h2 = m.runAfterBoth(f, g, r2);
2020 +        checkIncomplete(h1);
2021 +        checkIncomplete(h2);
2022 +        assertTrue(complete2.call());
2023 +        final CompletableFuture<Void> h3 = m.runAfterBoth(f, g, r3);
2024 +
2025 +        checkCompletedWithWrappedCancellationException(h1);
2026 +        checkCompletedWithWrappedCancellationException(h2);
2027 +        checkCompletedWithWrappedCancellationException(h3);
2028 +        r1.assertNotInvoked();
2029 +        r2.assertNotInvoked();
2030 +        r3.assertNotInvoked();
2031 +        checkCompletedNormally(failFirst ? snd : fst, v1);
2032 +        checkCancelled(failFirst ? fst : snd);
2033 +    }}
2034 +
2035 +    /**
2036 +     * runAfterBoth result completes exceptionally if action does
2037 +     */
2038 +    public void testRunAfterBoth_actionFailed() {
2039 +        for (ExecutionMode m : ExecutionMode.values())
2040 +        for (boolean fFirst : new boolean[] { true, false })
2041 +        for (Integer v1 : new Integer[] { 1, null })
2042 +        for (Integer v2 : new Integer[] { 2, null })
2043 +    {
2044 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2045 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2046 +        final FailingRunnable r1 = new FailingRunnable(m);
2047 +        final FailingRunnable r2 = new FailingRunnable(m);
2048 +        final FailingRunnable r3 = new FailingRunnable(m);
2049 +
2050 +        final CompletableFuture<Integer> fst =  fFirst ? f : g;
2051 +        final CompletableFuture<Integer> snd = !fFirst ? f : g;
2052 +        final Integer w1 =  fFirst ? v1 : v2;
2053 +        final Integer w2 = !fFirst ? v1 : v2;
2054 +
2055 +        final CompletableFuture<Void> h1 = m.runAfterBoth(f, g, r1);
2056 +        assertTrue(fst.complete(w1));
2057 +        final CompletableFuture<Void> h2 = m.runAfterBoth(f, g, r2);
2058 +        assertTrue(snd.complete(w2));
2059 +        final CompletableFuture<Void> h3 = m.runAfterBoth(f, g, r3);
2060 +
2061 +        checkCompletedWithWrappedCFException(h1);
2062 +        checkCompletedWithWrappedCFException(h2);
2063 +        checkCompletedWithWrappedCFException(h3);
2064 +        r1.assertInvoked();
2065 +        r2.assertInvoked();
2066 +        r3.assertInvoked();
2067 +        checkCompletedNormally(f, v1);
2068 +        checkCompletedNormally(g, v2);
2069 +    }}
2070 +
2071 +    /**
2072 +     * applyToEither result completes normally after normal completion
2073 +     * of either source
2074 +     */
2075 +    public void testApplyToEither_normalCompletion() {
2076 +        for (ExecutionMode m : ExecutionMode.values())
2077 +        for (Integer v1 : new Integer[] { 1, null })
2078 +        for (Integer v2 : new Integer[] { 2, null })
2079 +    {
2080 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2081 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2082 +        final IncFunction[] rs = new IncFunction[6];
2083 +        for (int i = 0; i < rs.length; i++) rs[i] = new IncFunction(m);
2084 +
2085 +        final CompletableFuture<Integer> h0 = m.applyToEither(f, g, rs[0]);
2086 +        final CompletableFuture<Integer> h1 = m.applyToEither(g, f, rs[1]);
2087 +        checkIncomplete(h0);
2088 +        checkIncomplete(h1);
2089 +        rs[0].assertNotInvoked();
2090 +        rs[1].assertNotInvoked();
2091 +        f.complete(v1);
2092 +        checkCompletedNormally(h0, inc(v1));
2093 +        checkCompletedNormally(h1, inc(v1));
2094 +        final CompletableFuture<Integer> h2 = m.applyToEither(f, g, rs[2]);
2095 +        final CompletableFuture<Integer> h3 = m.applyToEither(g, f, rs[3]);
2096 +        checkCompletedNormally(h2, inc(v1));
2097 +        checkCompletedNormally(h3, inc(v1));
2098 +        g.complete(v2);
2099 +
2100 +        // unspecified behavior - both source completions available
2101 +        final CompletableFuture<Integer> h4 = m.applyToEither(f, g, rs[4]);
2102 +        final CompletableFuture<Integer> h5 = m.applyToEither(g, f, rs[5]);
2103 +        rs[4].assertValue(h4.join());
2104 +        rs[5].assertValue(h5.join());
2105 +        assertTrue(Objects.equals(inc(v1), h4.join()) ||
2106 +                   Objects.equals(inc(v2), h4.join()));
2107 +        assertTrue(Objects.equals(inc(v1), h5.join()) ||
2108 +                   Objects.equals(inc(v2), h5.join()));
2109 +
2110 +        checkCompletedNormally(f, v1);
2111 +        checkCompletedNormally(g, v2);
2112 +        checkCompletedNormally(h0, inc(v1));
2113 +        checkCompletedNormally(h1, inc(v1));
2114 +        checkCompletedNormally(h2, inc(v1));
2115 +        checkCompletedNormally(h3, inc(v1));
2116 +        for (int i = 0; i < 4; i++) rs[i].assertValue(inc(v1));
2117 +    }}
2118 +
2119 +    /**
2120 +     * applyToEither result completes exceptionally after exceptional
2121 +     * completion of either source
2122 +     */
2123 +    public void testApplyToEither_exceptionalCompletion() {
2124 +        for (ExecutionMode m : ExecutionMode.values())
2125 +        for (Integer v1 : new Integer[] { 1, null })
2126 +    {
2127 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2128 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2129 +        final CFException ex = new CFException();
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.completeExceptionally(ex);
2140 +        checkCompletedWithWrappedException(h0, ex);
2141 +        checkCompletedWithWrappedException(h1, ex);
2142 +        final CompletableFuture<Integer> h2 = m.applyToEither(f, g, rs[2]);
2143 +        final CompletableFuture<Integer> h3 = m.applyToEither(g, f, rs[3]);
2144 +        checkCompletedWithWrappedException(h2, ex);
2145 +        checkCompletedWithWrappedException(h3, ex);
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 +            checkCompletedWithWrappedException(h4, ex);
2156 +            rs[4].assertNotInvoked();
2157 +        }
2158 +        try {
2159 +            assertEquals(inc(v1), h5.join());
2160 +            rs[5].assertValue(inc(v1));
2161 +        } catch (CompletionException ok) {
2162 +            checkCompletedWithWrappedException(h5, ex);
2163 +            rs[5].assertNotInvoked();
2164 +        }
2165 +
2166 +        checkCompletedExceptionally(f, ex);
2167 +        checkCompletedNormally(g, v1);
2168 +        checkCompletedWithWrappedException(h0, ex);
2169 +        checkCompletedWithWrappedException(h1, ex);
2170 +        checkCompletedWithWrappedException(h2, ex);
2171 +        checkCompletedWithWrappedException(h3, ex);
2172 +        checkCompletedWithWrappedException(h4, ex);
2173 +        for (int i = 0; i < 4; i++) rs[i].assertNotInvoked();
2174 +    }}
2175 +
2176 +    public void testApplyToEither_exceptionalCompletion2() {
2177 +        for (ExecutionMode m : ExecutionMode.values())
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 CFException ex = new CFException();
2184 +        final IncFunction[] rs = new IncFunction[6];
2185 +        for (int i = 0; i < rs.length; i++) rs[i] = new IncFunction(m);
2186 +
2187 +        final CompletableFuture<Integer> h0 = m.applyToEither(f, g, rs[0]);
2188 +        final CompletableFuture<Integer> h1 = m.applyToEither(g, f, rs[1]);
2189 +        assertTrue(fFirst ? f.complete(v1) : g.completeExceptionally(ex));
2190 +        assertTrue(!fFirst ? f.complete(v1) : g.completeExceptionally(ex));
2191 +        final CompletableFuture<Integer> h2 = m.applyToEither(f, g, rs[2]);
2192 +        final CompletableFuture<Integer> h3 = m.applyToEither(g, f, rs[3]);
2193 +
2194 +        // unspecified behavior - both source completions available
2195 +        try {
2196 +            assertEquals(inc(v1), h0.join());
2197 +            rs[0].assertValue(inc(v1));
2198 +        } catch (CompletionException ok) {
2199 +            checkCompletedWithWrappedException(h0, ex);
2200 +            rs[0].assertNotInvoked();
2201 +        }
2202 +        try {
2203 +            assertEquals(inc(v1), h1.join());
2204 +            rs[1].assertValue(inc(v1));
2205 +        } catch (CompletionException ok) {
2206 +            checkCompletedWithWrappedException(h1, ex);
2207 +            rs[1].assertNotInvoked();
2208 +        }
2209 +        try {
2210 +            assertEquals(inc(v1), h2.join());
2211 +            rs[2].assertValue(inc(v1));
2212 +        } catch (CompletionException ok) {
2213 +            checkCompletedWithWrappedException(h2, ex);
2214 +            rs[2].assertNotInvoked();
2215 +        }
2216 +        try {
2217 +            assertEquals(inc(v1), h3.join());
2218 +            rs[3].assertValue(inc(v1));
2219 +        } catch (CompletionException ok) {
2220 +            checkCompletedWithWrappedException(h3, ex);
2221 +            rs[3].assertNotInvoked();
2222 +        }
2223 +
2224 +        checkCompletedNormally(f, v1);
2225 +        checkCompletedExceptionally(g, ex);
2226 +    }}
2227 +
2228 +    /**
2229 +     * applyToEither result completes exceptionally if either source cancelled
2230 +     */
2231 +    public void testApplyToEither_sourceCancelled() {
2232 +        for (ExecutionMode m : ExecutionMode.values())
2233 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2234 +        for (Integer v1 : new Integer[] { 1, null })
2235 +    {
2236 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2237 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2238 +        final IncFunction[] rs = new IncFunction[6];
2239 +        for (int i = 0; i < rs.length; i++) rs[i] = new IncFunction(m);
2240 +
2241 +        final CompletableFuture<Integer> h0 = m.applyToEither(f, g, rs[0]);
2242 +        final CompletableFuture<Integer> h1 = m.applyToEither(g, f, rs[1]);
2243 +        checkIncomplete(h0);
2244 +        checkIncomplete(h1);
2245 +        rs[0].assertNotInvoked();
2246 +        rs[1].assertNotInvoked();
2247 +        f.cancel(mayInterruptIfRunning);
2248 +        checkCompletedWithWrappedCancellationException(h0);
2249 +        checkCompletedWithWrappedCancellationException(h1);
2250 +        final CompletableFuture<Integer> h2 = m.applyToEither(f, g, rs[2]);
2251 +        final CompletableFuture<Integer> h3 = m.applyToEither(g, f, rs[3]);
2252 +        checkCompletedWithWrappedCancellationException(h2);
2253 +        checkCompletedWithWrappedCancellationException(h3);
2254 +        g.complete(v1);
2255 +
2256 +        // unspecified behavior - both source completions available
2257 +        final CompletableFuture<Integer> h4 = m.applyToEither(f, g, rs[4]);
2258 +        final CompletableFuture<Integer> h5 = m.applyToEither(g, f, rs[5]);
2259 +        try {
2260 +            assertEquals(inc(v1), h4.join());
2261 +            rs[4].assertValue(inc(v1));
2262 +        } catch (CompletionException ok) {
2263 +            checkCompletedWithWrappedCancellationException(h4);
2264 +            rs[4].assertNotInvoked();
2265 +        }
2266 +        try {
2267 +            assertEquals(inc(v1), h5.join());
2268 +            rs[5].assertValue(inc(v1));
2269 +        } catch (CompletionException ok) {
2270 +            checkCompletedWithWrappedCancellationException(h5);
2271 +            rs[5].assertNotInvoked();
2272 +        }
2273 +
2274 +        checkCancelled(f);
2275 +        checkCompletedNormally(g, v1);
2276 +        checkCompletedWithWrappedCancellationException(h0);
2277 +        checkCompletedWithWrappedCancellationException(h1);
2278 +        checkCompletedWithWrappedCancellationException(h2);
2279 +        checkCompletedWithWrappedCancellationException(h3);
2280 +        for (int i = 0; i < 4; i++) rs[i].assertNotInvoked();
2281 +    }}
2282 +
2283 +    public void testApplyToEither_sourceCancelled2() {
2284 +        for (ExecutionMode m : ExecutionMode.values())
2285 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2286 +        for (boolean fFirst : new boolean[] { true, false })
2287 +        for (Integer v1 : new Integer[] { 1, null })
2288 +    {
2289 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2290 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2291 +        final IncFunction[] rs = new IncFunction[6];
2292 +        for (int i = 0; i < rs.length; i++) rs[i] = new IncFunction(m);
2293 +
2294 +        final CompletableFuture<Integer> h0 = m.applyToEither(f, g, rs[0]);
2295 +        final CompletableFuture<Integer> h1 = m.applyToEither(g, f, rs[1]);
2296 +        assertTrue(fFirst ? f.complete(v1) : g.cancel(mayInterruptIfRunning));
2297 +        assertTrue(!fFirst ? f.complete(v1) : g.cancel(mayInterruptIfRunning));
2298 +        final CompletableFuture<Integer> h2 = m.applyToEither(f, g, rs[2]);
2299 +        final CompletableFuture<Integer> h3 = m.applyToEither(g, f, rs[3]);
2300 +
2301 +        // unspecified behavior - both source completions available
2302 +        try {
2303 +            assertEquals(inc(v1), h0.join());
2304 +            rs[0].assertValue(inc(v1));
2305 +        } catch (CompletionException ok) {
2306 +            checkCompletedWithWrappedCancellationException(h0);
2307 +            rs[0].assertNotInvoked();
2308 +        }
2309 +        try {
2310 +            assertEquals(inc(v1), h1.join());
2311 +            rs[1].assertValue(inc(v1));
2312 +        } catch (CompletionException ok) {
2313 +            checkCompletedWithWrappedCancellationException(h1);
2314 +            rs[1].assertNotInvoked();
2315 +        }
2316 +        try {
2317 +            assertEquals(inc(v1), h2.join());
2318 +            rs[2].assertValue(inc(v1));
2319 +        } catch (CompletionException ok) {
2320 +            checkCompletedWithWrappedCancellationException(h2);
2321 +            rs[2].assertNotInvoked();
2322 +        }
2323 +        try {
2324 +            assertEquals(inc(v1), h3.join());
2325 +            rs[3].assertValue(inc(v1));
2326 +        } catch (CompletionException ok) {
2327 +            checkCompletedWithWrappedCancellationException(h3);
2328 +            rs[3].assertNotInvoked();
2329 +        }
2330 +
2331 +        checkCompletedNormally(f, v1);
2332 +        checkCancelled(g);
2333 +    }}
2334 +
2335 +    /**
2336 +     * applyToEither result completes exceptionally if action does
2337 +     */
2338 +    public void testApplyToEither_actionFailed() {
2339 +        for (ExecutionMode m : ExecutionMode.values())
2340 +        for (Integer v1 : new Integer[] { 1, null })
2341 +        for (Integer v2 : new Integer[] { 2, null })
2342 +    {
2343 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2344 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2345 +        final FailingFunction[] rs = new FailingFunction[6];
2346 +        for (int i = 0; i < rs.length; i++) rs[i] = new FailingFunction(m);
2347 +
2348 +        final CompletableFuture<Integer> h0 = m.applyToEither(f, g, rs[0]);
2349 +        final CompletableFuture<Integer> h1 = m.applyToEither(g, f, rs[1]);
2350 +        f.complete(v1);
2351 +        final CompletableFuture<Integer> h2 = m.applyToEither(f, g, rs[2]);
2352 +        final CompletableFuture<Integer> h3 = m.applyToEither(g, f, rs[3]);
2353 +        checkCompletedWithWrappedCFException(h0);
2354 +        checkCompletedWithWrappedCFException(h1);
2355 +        checkCompletedWithWrappedCFException(h2);
2356 +        checkCompletedWithWrappedCFException(h3);
2357 +        for (int i = 0; i < 4; i++) rs[i].assertValue(v1);
2358 +
2359 +        g.complete(v2);
2360 +
2361 +        // unspecified behavior - both source completions available
2362 +        final CompletableFuture<Integer> h4 = m.applyToEither(f, g, rs[4]);
2363 +        final CompletableFuture<Integer> h5 = m.applyToEither(g, f, rs[5]);
2364 +
2365 +        checkCompletedWithWrappedCFException(h4);
2366 +        assertTrue(Objects.equals(v1, rs[4].value) ||
2367 +                   Objects.equals(v2, rs[4].value));
2368 +        checkCompletedWithWrappedCFException(h5);
2369 +        assertTrue(Objects.equals(v1, rs[5].value) ||
2370 +                   Objects.equals(v2, rs[5].value));
2371 +
2372 +        checkCompletedNormally(f, v1);
2373 +        checkCompletedNormally(g, v2);
2374 +    }}
2375 +
2376 +    /**
2377 +     * acceptEither result completes normally after normal completion
2378 +     * of either source
2379 +     */
2380 +    public void testAcceptEither_normalCompletion() {
2381 +        for (ExecutionMode m : ExecutionMode.values())
2382 +        for (Integer v1 : new Integer[] { 1, null })
2383 +        for (Integer v2 : new Integer[] { 2, null })
2384 +    {
2385 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2386 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2387 +        final NoopConsumer[] rs = new NoopConsumer[6];
2388 +        for (int i = 0; i < rs.length; i++) rs[i] = new NoopConsumer(m);
2389 +
2390 +        final CompletableFuture<Void> h0 = m.acceptEither(f, g, rs[0]);
2391 +        final CompletableFuture<Void> h1 = m.acceptEither(g, f, rs[1]);
2392 +        checkIncomplete(h0);
2393 +        checkIncomplete(h1);
2394 +        rs[0].assertNotInvoked();
2395 +        rs[1].assertNotInvoked();
2396 +        f.complete(v1);
2397 +        checkCompletedNormally(h0, null);
2398 +        checkCompletedNormally(h1, null);
2399 +        rs[0].assertValue(v1);
2400 +        rs[1].assertValue(v1);
2401 +        final CompletableFuture<Void> h2 = m.acceptEither(f, g, rs[2]);
2402 +        final CompletableFuture<Void> h3 = m.acceptEither(g, f, rs[3]);
2403 +        checkCompletedNormally(h2, null);
2404 +        checkCompletedNormally(h3, null);
2405 +        rs[2].assertValue(v1);
2406 +        rs[3].assertValue(v1);
2407 +        g.complete(v2);
2408 +
2409 +        // unspecified behavior - both source completions available
2410 +        final CompletableFuture<Void> h4 = m.acceptEither(f, g, rs[4]);
2411 +        final CompletableFuture<Void> h5 = m.acceptEither(g, f, rs[5]);
2412 +        checkCompletedNormally(h4, null);
2413 +        checkCompletedNormally(h5, null);
2414 +        assertTrue(Objects.equals(v1, rs[4].value) ||
2415 +                   Objects.equals(v2, rs[4].value));
2416 +        assertTrue(Objects.equals(v1, rs[5].value) ||
2417 +                   Objects.equals(v2, rs[5].value));
2418 +
2419 +        checkCompletedNormally(f, v1);
2420 +        checkCompletedNormally(g, v2);
2421 +        checkCompletedNormally(h0, null);
2422 +        checkCompletedNormally(h1, null);
2423 +        checkCompletedNormally(h2, null);
2424 +        checkCompletedNormally(h3, null);
2425 +        for (int i = 0; i < 4; i++) rs[i].assertValue(v1);
2426 +    }}
2427 +
2428 +    /**
2429 +     * acceptEither result completes exceptionally after exceptional
2430 +     * completion of either source
2431 +     */
2432 +    public void testAcceptEither_exceptionalCompletion() {
2433 +        for (ExecutionMode m : ExecutionMode.values())
2434 +        for (Integer v1 : new Integer[] { 1, null })
2435 +    {
2436 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2437 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2438 +        final CFException ex = new CFException();
2439 +        final NoopConsumer[] rs = new NoopConsumer[6];
2440 +        for (int i = 0; i < rs.length; i++) rs[i] = new NoopConsumer(m);
2441 +
2442 +        final CompletableFuture<Void> h0 = m.acceptEither(f, g, rs[0]);
2443 +        final CompletableFuture<Void> h1 = m.acceptEither(g, f, rs[1]);
2444 +        checkIncomplete(h0);
2445 +        checkIncomplete(h1);
2446 +        rs[0].assertNotInvoked();
2447 +        rs[1].assertNotInvoked();
2448 +        f.completeExceptionally(ex);
2449 +        checkCompletedWithWrappedException(h0, ex);
2450 +        checkCompletedWithWrappedException(h1, ex);
2451 +        final CompletableFuture<Void> h2 = m.acceptEither(f, g, rs[2]);
2452 +        final CompletableFuture<Void> h3 = m.acceptEither(g, f, rs[3]);
2453 +        checkCompletedWithWrappedException(h2, ex);
2454 +        checkCompletedWithWrappedException(h3, ex);
2455 +
2456 +        g.complete(v1);
2457 +
2458 +        // unspecified behavior - both source completions available
2459 +        final CompletableFuture<Void> h4 = m.acceptEither(f, g, rs[4]);
2460 +        final CompletableFuture<Void> h5 = m.acceptEither(g, f, rs[5]);
2461 +        try {
2462 +            assertNull(h4.join());
2463 +            rs[4].assertValue(v1);
2464 +        } catch (CompletionException ok) {
2465 +            checkCompletedWithWrappedException(h4, ex);
2466 +            rs[4].assertNotInvoked();
2467 +        }
2468 +        try {
2469 +            assertNull(h5.join());
2470 +            rs[5].assertValue(v1);
2471 +        } catch (CompletionException ok) {
2472 +            checkCompletedWithWrappedException(h5, ex);
2473 +            rs[5].assertNotInvoked();
2474 +        }
2475 +
2476 +        checkCompletedExceptionally(f, ex);
2477 +        checkCompletedNormally(g, v1);
2478 +        checkCompletedWithWrappedException(h0, ex);
2479 +        checkCompletedWithWrappedException(h1, ex);
2480 +        checkCompletedWithWrappedException(h2, ex);
2481 +        checkCompletedWithWrappedException(h3, ex);
2482 +        checkCompletedWithWrappedException(h4, ex);
2483 +        for (int i = 0; i < 4; i++) rs[i].assertNotInvoked();
2484 +    }}
2485 +
2486 +    public void testAcceptEither_exceptionalCompletion2() {
2487 +        for (ExecutionMode m : ExecutionMode.values())
2488 +        for (boolean fFirst : new boolean[] { true, false })
2489 +        for (Integer v1 : new Integer[] { 1, null })
2490 +    {
2491 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2492 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2493 +        final CFException ex = new CFException();
2494 +        final NoopConsumer[] rs = new NoopConsumer[6];
2495 +        for (int i = 0; i < rs.length; i++) rs[i] = new NoopConsumer(m);
2496 +
2497 +        final CompletableFuture<Void> h0 = m.acceptEither(f, g, rs[0]);
2498 +        final CompletableFuture<Void> h1 = m.acceptEither(g, f, rs[1]);
2499 +        assertTrue(fFirst ? f.complete(v1) : g.completeExceptionally(ex));
2500 +        assertTrue(!fFirst ? f.complete(v1) : g.completeExceptionally(ex));
2501 +        final CompletableFuture<Void> h2 = m.acceptEither(f, g, rs[2]);
2502 +        final CompletableFuture<Void> h3 = m.acceptEither(g, f, rs[3]);
2503 +
2504 +        // unspecified behavior - both source completions available
2505 +        try {
2506 +            assertEquals(null, h0.join());
2507 +            rs[0].assertValue(v1);
2508 +        } catch (CompletionException ok) {
2509 +            checkCompletedWithWrappedException(h0, ex);
2510 +            rs[0].assertNotInvoked();
2511 +        }
2512 +        try {
2513 +            assertEquals(null, h1.join());
2514 +            rs[1].assertValue(v1);
2515 +        } catch (CompletionException ok) {
2516 +            checkCompletedWithWrappedException(h1, ex);
2517 +            rs[1].assertNotInvoked();
2518 +        }
2519 +        try {
2520 +            assertEquals(null, h2.join());
2521 +            rs[2].assertValue(v1);
2522 +        } catch (CompletionException ok) {
2523 +            checkCompletedWithWrappedException(h2, ex);
2524 +            rs[2].assertNotInvoked();
2525 +        }
2526 +        try {
2527 +            assertEquals(null, h3.join());
2528 +            rs[3].assertValue(v1);
2529 +        } catch (CompletionException ok) {
2530 +            checkCompletedWithWrappedException(h3, ex);
2531 +            rs[3].assertNotInvoked();
2532 +        }
2533 +
2534 +        checkCompletedNormally(f, v1);
2535 +        checkCompletedExceptionally(g, ex);
2536 +    }}
2537 +
2538 +    /**
2539 +     * acceptEither result completes exceptionally if either source cancelled
2540 +     */
2541 +    public void testAcceptEither_sourceCancelled() {
2542 +        for (ExecutionMode m : ExecutionMode.values())
2543 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2544 +        for (Integer v1 : new Integer[] { 1, null })
2545 +    {
2546 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2547 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2548 +        final NoopConsumer[] rs = new NoopConsumer[6];
2549 +        for (int i = 0; i < rs.length; i++) rs[i] = new NoopConsumer(m);
2550 +
2551 +        final CompletableFuture<Void> h0 = m.acceptEither(f, g, rs[0]);
2552 +        final CompletableFuture<Void> h1 = m.acceptEither(g, f, rs[1]);
2553 +        checkIncomplete(h0);
2554 +        checkIncomplete(h1);
2555 +        rs[0].assertNotInvoked();
2556 +        rs[1].assertNotInvoked();
2557 +        f.cancel(mayInterruptIfRunning);
2558 +        checkCompletedWithWrappedCancellationException(h0);
2559 +        checkCompletedWithWrappedCancellationException(h1);
2560 +        final CompletableFuture<Void> h2 = m.acceptEither(f, g, rs[2]);
2561 +        final CompletableFuture<Void> h3 = m.acceptEither(g, f, rs[3]);
2562 +        checkCompletedWithWrappedCancellationException(h2);
2563 +        checkCompletedWithWrappedCancellationException(h3);
2564 +
2565 +        g.complete(v1);
2566 +
2567 +        // unspecified behavior - both source completions available
2568 +        final CompletableFuture<Void> h4 = m.acceptEither(f, g, rs[4]);
2569 +        final CompletableFuture<Void> h5 = m.acceptEither(g, f, rs[5]);
2570 +        try {
2571 +            assertNull(h4.join());
2572 +            rs[4].assertValue(v1);
2573 +        } catch (CompletionException ok) {
2574 +            checkCompletedWithWrappedCancellationException(h4);
2575 +            rs[4].assertNotInvoked();
2576 +        }
2577 +        try {
2578 +            assertNull(h5.join());
2579 +            rs[5].assertValue(v1);
2580 +        } catch (CompletionException ok) {
2581 +            checkCompletedWithWrappedCancellationException(h5);
2582 +            rs[5].assertNotInvoked();
2583 +        }
2584 +
2585 +        checkCancelled(f);
2586 +        checkCompletedNormally(g, v1);
2587 +        checkCompletedWithWrappedCancellationException(h0);
2588 +        checkCompletedWithWrappedCancellationException(h1);
2589 +        checkCompletedWithWrappedCancellationException(h2);
2590 +        checkCompletedWithWrappedCancellationException(h3);
2591 +        for (int i = 0; i < 4; i++) rs[i].assertNotInvoked();
2592 +    }}
2593 +
2594 +    /**
2595 +     * acceptEither result completes exceptionally if action does
2596 +     */
2597 +    public void testAcceptEither_actionFailed() {
2598 +        for (ExecutionMode m : ExecutionMode.values())
2599 +        for (Integer v1 : new Integer[] { 1, null })
2600 +        for (Integer v2 : new Integer[] { 2, null })
2601 +    {
2602 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2603 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2604 +        final FailingConsumer[] rs = new FailingConsumer[6];
2605 +        for (int i = 0; i < rs.length; i++) rs[i] = new FailingConsumer(m);
2606 +
2607 +        final CompletableFuture<Void> h0 = m.acceptEither(f, g, rs[0]);
2608 +        final CompletableFuture<Void> h1 = m.acceptEither(g, f, rs[1]);
2609 +        f.complete(v1);
2610 +        final CompletableFuture<Void> h2 = m.acceptEither(f, g, rs[2]);
2611 +        final CompletableFuture<Void> h3 = m.acceptEither(g, f, rs[3]);
2612 +        checkCompletedWithWrappedCFException(h0);
2613 +        checkCompletedWithWrappedCFException(h1);
2614 +        checkCompletedWithWrappedCFException(h2);
2615 +        checkCompletedWithWrappedCFException(h3);
2616 +        for (int i = 0; i < 4; i++) rs[i].assertValue(v1);
2617 +
2618 +        g.complete(v2);
2619 +
2620 +        // unspecified behavior - both source completions available
2621 +        final CompletableFuture<Void> h4 = m.acceptEither(f, g, rs[4]);
2622 +        final CompletableFuture<Void> h5 = m.acceptEither(g, f, rs[5]);
2623 +
2624 +        checkCompletedWithWrappedCFException(h4);
2625 +        assertTrue(Objects.equals(v1, rs[4].value) ||
2626 +                   Objects.equals(v2, rs[4].value));
2627 +        checkCompletedWithWrappedCFException(h5);
2628 +        assertTrue(Objects.equals(v1, rs[5].value) ||
2629 +                   Objects.equals(v2, rs[5].value));
2630 +
2631 +        checkCompletedNormally(f, v1);
2632 +        checkCompletedNormally(g, v2);
2633 +    }}
2634 +
2635 +    /**
2636 +     * runAfterEither result completes normally after normal completion
2637 +     * of either source
2638 +     */
2639 +    public void testRunAfterEither_normalCompletion() {
2640 +        for (ExecutionMode m : ExecutionMode.values())
2641 +        for (Integer v1 : new Integer[] { 1, null })
2642 +        for (Integer v2 : new Integer[] { 2, null })
2643 +    {
2644 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2645 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2646 +        final Noop[] rs = new Noop[6];
2647 +        for (int i = 0; i < rs.length; i++) rs[i] = new Noop(m);
2648 +
2649 +        final CompletableFuture<Void> h0 = m.runAfterEither(f, g, rs[0]);
2650 +        final CompletableFuture<Void> h1 = m.runAfterEither(g, f, rs[1]);
2651 +        checkIncomplete(h0);
2652 +        checkIncomplete(h1);
2653 +        rs[0].assertNotInvoked();
2654 +        rs[1].assertNotInvoked();
2655 +        f.complete(v1);
2656 +        checkCompletedNormally(h0, null);
2657 +        checkCompletedNormally(h1, null);
2658 +        rs[0].assertInvoked();
2659 +        rs[1].assertInvoked();
2660 +        final CompletableFuture<Void> h2 = m.runAfterEither(f, g, rs[2]);
2661 +        final CompletableFuture<Void> h3 = m.runAfterEither(g, f, rs[3]);
2662 +        checkCompletedNormally(h2, null);
2663 +        checkCompletedNormally(h3, null);
2664 +        rs[2].assertInvoked();
2665 +        rs[3].assertInvoked();
2666 +
2667 +        g.complete(v2);
2668 +
2669 +        final CompletableFuture<Void> h4 = m.runAfterEither(f, g, rs[4]);
2670 +        final CompletableFuture<Void> h5 = m.runAfterEither(g, f, rs[5]);
2671 +
2672 +        checkCompletedNormally(f, v1);
2673 +        checkCompletedNormally(g, v2);
2674 +        checkCompletedNormally(h0, null);
2675 +        checkCompletedNormally(h1, null);
2676 +        checkCompletedNormally(h2, null);
2677 +        checkCompletedNormally(h3, null);
2678 +        checkCompletedNormally(h4, null);
2679 +        checkCompletedNormally(h5, null);
2680 +        for (int i = 0; i < 6; i++) rs[i].assertInvoked();
2681 +    }}
2682 +
2683 +    /**
2684 +     * runAfterEither result completes exceptionally after exceptional
2685 +     * completion of either source
2686 +     */
2687 +    public void testRunAfterEither_exceptionalCompletion() {
2688 +        for (ExecutionMode m : ExecutionMode.values())
2689 +        for (Integer v1 : new Integer[] { 1, null })
2690 +    {
2691 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2692 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2693 +        final CFException ex = new CFException();
2694 +        final Noop[] rs = new Noop[6];
2695 +        for (int i = 0; i < rs.length; i++) rs[i] = new Noop(m);
2696 +
2697 +        final CompletableFuture<Void> h0 = m.runAfterEither(f, g, rs[0]);
2698 +        final CompletableFuture<Void> h1 = m.runAfterEither(g, f, rs[1]);
2699 +        checkIncomplete(h0);
2700 +        checkIncomplete(h1);
2701 +        rs[0].assertNotInvoked();
2702 +        rs[1].assertNotInvoked();
2703 +        assertTrue(f.completeExceptionally(ex));
2704 +        checkCompletedWithWrappedException(h0, ex);
2705 +        checkCompletedWithWrappedException(h1, ex);
2706 +        final CompletableFuture<Void> h2 = m.runAfterEither(f, g, rs[2]);
2707 +        final CompletableFuture<Void> h3 = m.runAfterEither(g, f, rs[3]);
2708 +        checkCompletedWithWrappedException(h2, ex);
2709 +        checkCompletedWithWrappedException(h3, ex);
2710 +
2711 +        assertTrue(g.complete(v1));
2712 +
2713 +        // unspecified behavior - both source completions available
2714 +        final CompletableFuture<Void> h4 = m.runAfterEither(f, g, rs[4]);
2715 +        final CompletableFuture<Void> h5 = m.runAfterEither(g, f, rs[5]);
2716 +        try {
2717 +            assertNull(h4.join());
2718 +            rs[4].assertInvoked();
2719 +        } catch (CompletionException ok) {
2720 +            checkCompletedWithWrappedException(h4, ex);
2721 +            rs[4].assertNotInvoked();
2722 +        }
2723 +        try {
2724 +            assertNull(h5.join());
2725 +            rs[5].assertInvoked();
2726 +        } catch (CompletionException ok) {
2727 +            checkCompletedWithWrappedException(h5, ex);
2728 +            rs[5].assertNotInvoked();
2729 +        }
2730 +
2731 +        checkCompletedExceptionally(f, ex);
2732 +        checkCompletedNormally(g, v1);
2733 +        checkCompletedWithWrappedException(h0, ex);
2734 +        checkCompletedWithWrappedException(h1, ex);
2735 +        checkCompletedWithWrappedException(h2, ex);
2736 +        checkCompletedWithWrappedException(h3, ex);
2737 +        checkCompletedWithWrappedException(h4, ex);
2738 +        for (int i = 0; i < 4; i++) rs[i].assertNotInvoked();
2739 +    }}
2740 +
2741 +    public void testRunAfterEither_exceptionalCompletion2() {
2742 +        for (ExecutionMode m : ExecutionMode.values())
2743 +        for (boolean fFirst : new boolean[] { true, false })
2744 +        for (Integer v1 : new Integer[] { 1, null })
2745 +    {
2746 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2747 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2748 +        final CFException ex = new CFException();
2749 +        final Noop[] rs = new Noop[6];
2750 +        for (int i = 0; i < rs.length; i++) rs[i] = new Noop(m);
2751 +
2752 +        final CompletableFuture<Void> h0 = m.runAfterEither(f, g, rs[0]);
2753 +        final CompletableFuture<Void> h1 = m.runAfterEither(g, f, rs[1]);
2754 +        assertTrue( fFirst ? f.complete(v1) : g.completeExceptionally(ex));
2755 +        assertTrue(!fFirst ? f.complete(v1) : g.completeExceptionally(ex));
2756 +        final CompletableFuture<Void> h2 = m.runAfterEither(f, g, rs[2]);
2757 +        final CompletableFuture<Void> h3 = m.runAfterEither(g, f, rs[3]);
2758 +
2759 +        // unspecified behavior - both source completions available
2760 +        try {
2761 +            assertEquals(null, h0.join());
2762 +            rs[0].assertInvoked();
2763 +        } catch (CompletionException ok) {
2764 +            checkCompletedWithWrappedException(h0, ex);
2765 +            rs[0].assertNotInvoked();
2766 +        }
2767 +        try {
2768 +            assertEquals(null, h1.join());
2769 +            rs[1].assertInvoked();
2770 +        } catch (CompletionException ok) {
2771 +            checkCompletedWithWrappedException(h1, ex);
2772 +            rs[1].assertNotInvoked();
2773 +        }
2774 +        try {
2775 +            assertEquals(null, h2.join());
2776 +            rs[2].assertInvoked();
2777 +        } catch (CompletionException ok) {
2778 +            checkCompletedWithWrappedException(h2, ex);
2779 +            rs[2].assertNotInvoked();
2780 +        }
2781 +        try {
2782 +            assertEquals(null, h3.join());
2783 +            rs[3].assertInvoked();
2784 +        } catch (CompletionException ok) {
2785 +            checkCompletedWithWrappedException(h3, ex);
2786 +            rs[3].assertNotInvoked();
2787 +        }
2788 +
2789 +        checkCompletedNormally(f, v1);
2790 +        checkCompletedExceptionally(g, ex);
2791 +    }}
2792 +
2793 +    /**
2794 +     * runAfterEither result completes exceptionally if either source cancelled
2795 +     */
2796 +    public void testRunAfterEither_sourceCancelled() {
2797 +        for (ExecutionMode m : ExecutionMode.values())
2798 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2799 +        for (Integer v1 : new Integer[] { 1, null })
2800 +    {
2801 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2802 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2803 +        final Noop[] rs = new Noop[6];
2804 +        for (int i = 0; i < rs.length; i++) rs[i] = new Noop(m);
2805 +
2806 +        final CompletableFuture<Void> h0 = m.runAfterEither(f, g, rs[0]);
2807 +        final CompletableFuture<Void> h1 = m.runAfterEither(g, f, rs[1]);
2808 +        checkIncomplete(h0);
2809 +        checkIncomplete(h1);
2810 +        rs[0].assertNotInvoked();
2811 +        rs[1].assertNotInvoked();
2812 +        f.cancel(mayInterruptIfRunning);
2813 +        checkCompletedWithWrappedCancellationException(h0);
2814 +        checkCompletedWithWrappedCancellationException(h1);
2815 +        final CompletableFuture<Void> h2 = m.runAfterEither(f, g, rs[2]);
2816 +        final CompletableFuture<Void> h3 = m.runAfterEither(g, f, rs[3]);
2817 +        checkCompletedWithWrappedCancellationException(h2);
2818 +        checkCompletedWithWrappedCancellationException(h3);
2819 +
2820 +        assertTrue(g.complete(v1));
2821 +
2822 +        // unspecified behavior - both source completions available
2823 +        final CompletableFuture<Void> h4 = m.runAfterEither(f, g, rs[4]);
2824 +        final CompletableFuture<Void> h5 = m.runAfterEither(g, f, rs[5]);
2825 +        try {
2826 +            assertNull(h4.join());
2827 +            rs[4].assertInvoked();
2828 +        } catch (CompletionException ok) {
2829 +            checkCompletedWithWrappedCancellationException(h4);
2830 +            rs[4].assertNotInvoked();
2831 +        }
2832 +        try {
2833 +            assertNull(h5.join());
2834 +            rs[5].assertInvoked();
2835 +        } catch (CompletionException ok) {
2836 +            checkCompletedWithWrappedCancellationException(h5);
2837 +            rs[5].assertNotInvoked();
2838 +        }
2839 +
2840 +        checkCancelled(f);
2841 +        checkCompletedNormally(g, v1);
2842 +        checkCompletedWithWrappedCancellationException(h0);
2843 +        checkCompletedWithWrappedCancellationException(h1);
2844 +        checkCompletedWithWrappedCancellationException(h2);
2845 +        checkCompletedWithWrappedCancellationException(h3);
2846 +        for (int i = 0; i < 4; i++) rs[i].assertNotInvoked();
2847 +    }}
2848 +
2849 +    /**
2850 +     * runAfterEither result completes exceptionally if action does
2851 +     */
2852 +    public void testRunAfterEither_actionFailed() {
2853 +        for (ExecutionMode m : ExecutionMode.values())
2854 +        for (Integer v1 : new Integer[] { 1, null })
2855 +        for (Integer v2 : new Integer[] { 2, null })
2856 +    {
2857 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2858 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2859 +        final FailingRunnable[] rs = new FailingRunnable[6];
2860 +        for (int i = 0; i < rs.length; i++) rs[i] = new FailingRunnable(m);
2861 +
2862 +        final CompletableFuture<Void> h0 = m.runAfterEither(f, g, rs[0]);
2863 +        final CompletableFuture<Void> h1 = m.runAfterEither(g, f, rs[1]);
2864 +        assertTrue(f.complete(v1));
2865 +        final CompletableFuture<Void> h2 = m.runAfterEither(f, g, rs[2]);
2866 +        final CompletableFuture<Void> h3 = m.runAfterEither(g, f, rs[3]);
2867 +        checkCompletedWithWrappedCFException(h0);
2868 +        checkCompletedWithWrappedCFException(h1);
2869 +        checkCompletedWithWrappedCFException(h2);
2870 +        checkCompletedWithWrappedCFException(h3);
2871 +        for (int i = 0; i < 4; i++) rs[i].assertInvoked();
2872 +        assertTrue(g.complete(v2));
2873 +        final CompletableFuture<Void> h4 = m.runAfterEither(f, g, rs[4]);
2874 +        final CompletableFuture<Void> h5 = m.runAfterEither(g, f, rs[5]);
2875 +        checkCompletedWithWrappedCFException(h4);
2876 +        checkCompletedWithWrappedCFException(h5);
2877 +
2878 +        checkCompletedNormally(f, v1);
2879 +        checkCompletedNormally(g, v2);
2880 +        for (int i = 0; i < 6; i++) rs[i].assertInvoked();
2881 +    }}
2882 +
2883 +    /**
2884 +     * thenCompose result completes normally after normal completion of source
2885 +     */
2886 +    public void testThenCompose_normalCompletion() {
2887 +        for (ExecutionMode m : ExecutionMode.values())
2888 +        for (boolean createIncomplete : new boolean[] { true, false })
2889 +        for (Integer v1 : new Integer[] { 1, null })
2890 +    {
2891 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2892 +        final CompletableFutureInc r = new CompletableFutureInc(m);
2893 +        if (!createIncomplete) assertTrue(f.complete(v1));
2894 +        final CompletableFuture<Integer> g = m.thenCompose(f, r);
2895 +        if (createIncomplete) assertTrue(f.complete(v1));
2896 +
2897 +        checkCompletedNormally(g, inc(v1));
2898 +        checkCompletedNormally(f, v1);
2899 +        r.assertValue(v1);
2900 +    }}
2901 +
2902 +    /**
2903 +     * thenCompose result completes exceptionally after exceptional
2904 +     * completion of source
2905 +     */
2906 +    public void testThenCompose_exceptionalCompletion() {
2907 +        for (ExecutionMode m : ExecutionMode.values())
2908 +        for (boolean createIncomplete : new boolean[] { true, false })
2909 +    {
2910 +        final CFException ex = new CFException();
2911 +        final CompletableFutureInc r = new CompletableFutureInc(m);
2912 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2913 +        if (!createIncomplete) f.completeExceptionally(ex);
2914 +        final CompletableFuture<Integer> g = m.thenCompose(f, r);
2915 +        if (createIncomplete) f.completeExceptionally(ex);
2916 +
2917 +        checkCompletedWithWrappedException(g, ex);
2918 +        checkCompletedExceptionally(f, ex);
2919 +        r.assertNotInvoked();
2920 +    }}
2921 +
2922 +    /**
2923 +     * thenCompose result completes exceptionally if action does
2924 +     */
2925 +    public void testThenCompose_actionFailed() {
2926 +        for (ExecutionMode m : ExecutionMode.values())
2927 +        for (boolean createIncomplete : new boolean[] { true, false })
2928 +        for (Integer v1 : new Integer[] { 1, null })
2929 +    {
2930 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2931 +        final FailingCompletableFutureFunction r
2932 +            = new FailingCompletableFutureFunction(m);
2933 +        if (!createIncomplete) assertTrue(f.complete(v1));
2934 +        final CompletableFuture<Integer> g = m.thenCompose(f, r);
2935 +        if (createIncomplete) assertTrue(f.complete(v1));
2936 +
2937 +        checkCompletedWithWrappedCFException(g);
2938 +        checkCompletedNormally(f, v1);
2939 +    }}
2940 +
2941 +    /**
2942 +     * thenCompose result completes exceptionally if source cancelled
2943 +     */
2944 +    public void testThenCompose_sourceCancelled() {
2945 +        for (ExecutionMode m : ExecutionMode.values())
2946 +        for (boolean createIncomplete : new boolean[] { true, false })
2947 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2948 +    {
2949 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2950 +        final CompletableFutureInc r = new CompletableFutureInc(m);
2951 +        if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
2952 +        final CompletableFuture<Integer> g = m.thenCompose(f, r);
2953 +        if (createIncomplete) {
2954 +            checkIncomplete(g);
2955 +            assertTrue(f.cancel(mayInterruptIfRunning));
2956 +        }
2957 +
2958 +        checkCompletedWithWrappedCancellationException(g);
2959 +        checkCancelled(f);
2960 +    }}
2961 +
2962 +    /**
2963 +     * thenCompose result completes exceptionally if the result of the action does
2964 +     */
2965 +    public void testThenCompose_actionReturnsFailingFuture() {
2966 +        for (ExecutionMode m : ExecutionMode.values())
2967 +        for (int order = 0; order < 6; order++)
2968 +        for (Integer v1 : new Integer[] { 1, null })
2969 +    {
2970 +        final CFException ex = new CFException();
2971 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2972 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2973 +        final CompletableFuture<Integer> h;
2974 +        // Test all permutations of orders
2975 +        switch (order) {
2976 +        case 0:
2977 +            assertTrue(f.complete(v1));
2978 +            assertTrue(g.completeExceptionally(ex));
2979 +            h = m.thenCompose(f, (x -> g));
2980 +            break;
2981 +        case 1:
2982 +            assertTrue(f.complete(v1));
2983 +            h = m.thenCompose(f, (x -> g));
2984 +            assertTrue(g.completeExceptionally(ex));
2985 +            break;
2986 +        case 2:
2987 +            assertTrue(g.completeExceptionally(ex));
2988 +            assertTrue(f.complete(v1));
2989 +            h = m.thenCompose(f, (x -> g));
2990 +            break;
2991 +        case 3:
2992 +            assertTrue(g.completeExceptionally(ex));
2993 +            h = m.thenCompose(f, (x -> g));
2994 +            assertTrue(f.complete(v1));
2995 +            break;
2996 +        case 4:
2997 +            h = m.thenCompose(f, (x -> g));
2998 +            assertTrue(f.complete(v1));
2999 +            assertTrue(g.completeExceptionally(ex));
3000 +            break;
3001 +        case 5:
3002 +            h = m.thenCompose(f, (x -> g));
3003 +            assertTrue(f.complete(v1));
3004 +            assertTrue(g.completeExceptionally(ex));
3005 +            break;
3006 +        default: throw new AssertionError();
3007 +        }
3008 +
3009 +        checkCompletedExceptionally(g, ex);
3010 +        checkCompletedWithWrappedException(h, ex);
3011 +        checkCompletedNormally(f, v1);
3012 +    }}
3013 +
3014 +    // other static methods
3015 +
3016 +    /**
3017 +     * allOf(no component futures) returns a future completed normally
3018 +     * with the value null
3019 +     */
3020 +    public void testAllOf_empty() throws Exception {
3021 +        CompletableFuture<Void> f = CompletableFuture.allOf();
3022 +        checkCompletedNormally(f, null);
3023 +    }
3024 +
3025 +    /**
3026 +     * allOf returns a future completed normally with the value null
3027 +     * when all components complete normally
3028 +     */
3029 +    public void testAllOf_normal() throws Exception {
3030 +        for (int k = 1; k < 10; k++) {
3031 +            CompletableFuture<Integer>[] fs
3032 +                = (CompletableFuture<Integer>[]) new CompletableFuture[k];
3033 +            for (int i = 0; i < k; i++)
3034 +                fs[i] = new CompletableFuture<>();
3035 +            CompletableFuture<Void> f = CompletableFuture.allOf(fs);
3036 +            for (int i = 0; i < k; i++) {
3037 +                checkIncomplete(f);
3038 +                checkIncomplete(CompletableFuture.allOf(fs));
3039 +                fs[i].complete(one);
3040 +            }
3041 +            checkCompletedNormally(f, null);
3042 +            checkCompletedNormally(CompletableFuture.allOf(fs), null);
3043 +        }
3044 +    }
3045 +
3046 +    public void testAllOf_backwards() throws Exception {
3047 +        for (int k = 1; k < 10; k++) {
3048 +            CompletableFuture<Integer>[] fs
3049 +                = (CompletableFuture<Integer>[]) new CompletableFuture[k];
3050 +            for (int i = 0; i < k; i++)
3051 +                fs[i] = new CompletableFuture<>();
3052 +            CompletableFuture<Void> f = CompletableFuture.allOf(fs);
3053 +            for (int i = k - 1; i >= 0; i--) {
3054 +                checkIncomplete(f);
3055 +                checkIncomplete(CompletableFuture.allOf(fs));
3056 +                fs[i].complete(one);
3057 +            }
3058 +            checkCompletedNormally(f, null);
3059 +            checkCompletedNormally(CompletableFuture.allOf(fs), null);
3060 +        }
3061 +    }
3062 +
3063 +    public void testAllOf_exceptional() throws Exception {
3064 +        for (int k = 1; k < 10; k++) {
3065 +            CompletableFuture<Integer>[] fs
3066 +                = (CompletableFuture<Integer>[]) new CompletableFuture[k];
3067 +            CFException ex = new CFException();
3068 +            for (int i = 0; i < k; i++)
3069 +                fs[i] = new CompletableFuture<>();
3070 +            CompletableFuture<Void> f = CompletableFuture.allOf(fs);
3071 +            for (int i = 0; i < k; i++) {
3072 +                checkIncomplete(f);
3073 +                checkIncomplete(CompletableFuture.allOf(fs));
3074 +                if (i != k / 2) {
3075 +                    fs[i].complete(i);
3076 +                    checkCompletedNormally(fs[i], i);
3077 +                } else {
3078 +                    fs[i].completeExceptionally(ex);
3079 +                    checkCompletedExceptionally(fs[i], ex);
3080 +                }
3081 +            }
3082 +            checkCompletedWithWrappedException(f, ex);
3083 +            checkCompletedWithWrappedException(CompletableFuture.allOf(fs), ex);
3084 +        }
3085 +    }
3086 +
3087 +    /**
3088 +     * anyOf(no component futures) returns an incomplete future
3089 +     */
3090 +    public void testAnyOf_empty() throws Exception {
3091 +        for (Integer v1 : new Integer[] { 1, null })
3092 +    {
3093 +        CompletableFuture<Object> f = CompletableFuture.anyOf();
3094 +        checkIncomplete(f);
3095 +
3096 +        f.complete(v1);
3097 +        checkCompletedNormally(f, v1);
3098 +    }}
3099 +
3100 +    /**
3101 +     * anyOf returns a future completed normally with a value when
3102 +     * a component future does
3103 +     */
3104 +    public void testAnyOf_normal() throws Exception {
3105 +        for (int k = 0; k < 10; k++) {
3106 +            CompletableFuture[] fs = new CompletableFuture[k];
3107 +            for (int i = 0; i < k; i++)
3108 +                fs[i] = new CompletableFuture<>();
3109 +            CompletableFuture<Object> f = CompletableFuture.anyOf(fs);
3110 +            checkIncomplete(f);
3111 +            for (int i = 0; i < k; i++) {
3112 +                fs[i].complete(i);
3113 +                checkCompletedNormally(f, 0);
3114 +                int x = (int) CompletableFuture.anyOf(fs).join();
3115 +                assertTrue(0 <= x && x <= i);
3116 +            }
3117 +        }
3118 +    }
3119 +    public void testAnyOf_normal_backwards() throws Exception {
3120 +        for (int k = 0; k < 10; k++) {
3121 +            CompletableFuture[] fs = new CompletableFuture[k];
3122 +            for (int i = 0; i < k; i++)
3123 +                fs[i] = new CompletableFuture<>();
3124 +            CompletableFuture<Object> f = CompletableFuture.anyOf(fs);
3125 +            checkIncomplete(f);
3126 +            for (int i = k - 1; i >= 0; i--) {
3127 +                fs[i].complete(i);
3128 +                checkCompletedNormally(f, k - 1);
3129 +                int x = (int) CompletableFuture.anyOf(fs).join();
3130 +                assertTrue(i <= x && x <= k - 1);
3131 +            }
3132 +        }
3133 +    }
3134 +
3135 +    /**
3136 +     * anyOf result completes exceptionally when any component does.
3137 +     */
3138 +    public void testAnyOf_exceptional() throws Exception {
3139 +        for (int k = 0; k < 10; k++) {
3140 +            CompletableFuture[] fs = new CompletableFuture[k];
3141 +            CFException[] exs = new CFException[k];
3142 +            for (int i = 0; i < k; i++) {
3143 +                fs[i] = new CompletableFuture<>();
3144 +                exs[i] = new CFException();
3145 +            }
3146 +            CompletableFuture<Object> f = CompletableFuture.anyOf(fs);
3147 +            checkIncomplete(f);
3148 +            for (int i = 0; i < k; i++) {
3149 +                fs[i].completeExceptionally(exs[i]);
3150 +                checkCompletedWithWrappedException(f, exs[0]);
3151 +                checkCompletedWithWrappedCFException(CompletableFuture.anyOf(fs));
3152 +            }
3153 +        }
3154 +    }
3155 +
3156 +    public void testAnyOf_exceptional_backwards() throws Exception {
3157 +        for (int k = 0; k < 10; k++) {
3158 +            CompletableFuture[] fs = new CompletableFuture[k];
3159 +            CFException[] exs = new CFException[k];
3160 +            for (int i = 0; i < k; i++) {
3161 +                fs[i] = new CompletableFuture<>();
3162 +                exs[i] = new CFException();
3163 +            }
3164 +            CompletableFuture<Object> f = CompletableFuture.anyOf(fs);
3165 +            checkIncomplete(f);
3166 +            for (int i = k - 1; i >= 0; i--) {
3167 +                fs[i].completeExceptionally(exs[i]);
3168 +                checkCompletedWithWrappedException(f, exs[k - 1]);
3169 +                checkCompletedWithWrappedCFException(CompletableFuture.anyOf(fs));
3170 +            }
3171 +        }
3172 +    }
3173 +
3174 +    /**
3175 +     * Completion methods throw NullPointerException with null arguments
3176 +     */
3177 +    public void testNPE() {
3178 +        CompletableFuture<Integer> f = new CompletableFuture<>();
3179 +        CompletableFuture<Integer> g = new CompletableFuture<>();
3180 +        CompletableFuture<Integer> nullFuture = (CompletableFuture<Integer>)null;
3181 +        ThreadExecutor exec = new ThreadExecutor();
3182 +
3183 +        Runnable[] throwingActions = {
3184 +            () -> CompletableFuture.supplyAsync(null),
3185 +            () -> CompletableFuture.supplyAsync(null, exec),
3186 +            () -> CompletableFuture.supplyAsync(new IntegerSupplier(ExecutionMode.SYNC, 42), null),
3187 +
3188 +            () -> CompletableFuture.runAsync(null),
3189 +            () -> CompletableFuture.runAsync(null, exec),
3190 +            () -> CompletableFuture.runAsync(() -> {}, null),
3191 +
3192 +            () -> f.completeExceptionally(null),
3193 +
3194 +            () -> f.thenApply(null),
3195 +            () -> f.thenApplyAsync(null),
3196 +            () -> f.thenApplyAsync((x) -> x, null),
3197 +            () -> f.thenApplyAsync(null, exec),
3198 +
3199 +            () -> f.thenAccept(null),
3200 +            () -> f.thenAcceptAsync(null),
3201 +            () -> f.thenAcceptAsync((x) -> {} , null),
3202 +            () -> f.thenAcceptAsync(null, exec),
3203 +
3204 +            () -> f.thenRun(null),
3205 +            () -> f.thenRunAsync(null),
3206 +            () -> f.thenRunAsync(() -> {} , null),
3207 +            () -> f.thenRunAsync(null, exec),
3208 +
3209 +            () -> f.thenCombine(g, null),
3210 +            () -> f.thenCombineAsync(g, null),
3211 +            () -> f.thenCombineAsync(g, null, exec),
3212 +            () -> f.thenCombine(nullFuture, (x, y) -> x),
3213 +            () -> f.thenCombineAsync(nullFuture, (x, y) -> x),
3214 +            () -> f.thenCombineAsync(nullFuture, (x, y) -> x, exec),
3215 +            () -> f.thenCombineAsync(g, (x, y) -> x, null),
3216 +
3217 +            () -> f.thenAcceptBoth(g, null),
3218 +            () -> f.thenAcceptBothAsync(g, null),
3219 +            () -> f.thenAcceptBothAsync(g, null, exec),
3220 +            () -> f.thenAcceptBoth(nullFuture, (x, y) -> {}),
3221 +            () -> f.thenAcceptBothAsync(nullFuture, (x, y) -> {}),
3222 +            () -> f.thenAcceptBothAsync(nullFuture, (x, y) -> {}, exec),
3223 +            () -> f.thenAcceptBothAsync(g, (x, y) -> {}, null),
3224 +
3225 +            () -> f.runAfterBoth(g, null),
3226 +            () -> f.runAfterBothAsync(g, null),
3227 +            () -> f.runAfterBothAsync(g, null, exec),
3228 +            () -> f.runAfterBoth(nullFuture, () -> {}),
3229 +            () -> f.runAfterBothAsync(nullFuture, () -> {}),
3230 +            () -> f.runAfterBothAsync(nullFuture, () -> {}, exec),
3231 +            () -> f.runAfterBothAsync(g, () -> {}, null),
3232 +
3233 +            () -> f.applyToEither(g, null),
3234 +            () -> f.applyToEitherAsync(g, null),
3235 +            () -> f.applyToEitherAsync(g, null, exec),
3236 +            () -> f.applyToEither(nullFuture, (x) -> x),
3237 +            () -> f.applyToEitherAsync(nullFuture, (x) -> x),
3238 +            () -> f.applyToEitherAsync(nullFuture, (x) -> x, exec),
3239 +            () -> f.applyToEitherAsync(g, (x) -> x, null),
3240 +
3241 +            () -> f.acceptEither(g, null),
3242 +            () -> f.acceptEitherAsync(g, null),
3243 +            () -> f.acceptEitherAsync(g, null, exec),
3244 +            () -> f.acceptEither(nullFuture, (x) -> {}),
3245 +            () -> f.acceptEitherAsync(nullFuture, (x) -> {}),
3246 +            () -> f.acceptEitherAsync(nullFuture, (x) -> {}, exec),
3247 +            () -> f.acceptEitherAsync(g, (x) -> {}, null),
3248 +
3249 +            () -> f.runAfterEither(g, null),
3250 +            () -> f.runAfterEitherAsync(g, null),
3251 +            () -> f.runAfterEitherAsync(g, null, exec),
3252 +            () -> f.runAfterEither(nullFuture, () -> {}),
3253 +            () -> f.runAfterEitherAsync(nullFuture, () -> {}),
3254 +            () -> f.runAfterEitherAsync(nullFuture, () -> {}, exec),
3255 +            () -> f.runAfterEitherAsync(g, () -> {}, null),
3256 +
3257 +            () -> f.thenCompose(null),
3258 +            () -> f.thenComposeAsync(null),
3259 +            () -> f.thenComposeAsync(new CompletableFutureInc(ExecutionMode.EXECUTOR), null),
3260 +            () -> f.thenComposeAsync(null, exec),
3261 +
3262 +            () -> f.exceptionally(null),
3263 +
3264 +            () -> f.handle(null),
3265 +
3266 +            () -> CompletableFuture.allOf((CompletableFuture<?>)null),
3267 +            () -> CompletableFuture.allOf((CompletableFuture<?>[])null),
3268 +            () -> CompletableFuture.allOf(f, null),
3269 +            () -> CompletableFuture.allOf(null, f),
3270 +
3271 +            () -> CompletableFuture.anyOf((CompletableFuture<?>)null),
3272 +            () -> CompletableFuture.anyOf((CompletableFuture<?>[])null),
3273 +            () -> CompletableFuture.anyOf(f, null),
3274 +            () -> CompletableFuture.anyOf(null, f),
3275 +
3276 +            () -> f.obtrudeException(null),
3277 +
3278 +            () -> CompletableFuture.delayedExecutor(1L, SECONDS, null),
3279 +            () -> CompletableFuture.delayedExecutor(1L, null, new ThreadExecutor()),
3280 +            () -> CompletableFuture.delayedExecutor(1L, null),
3281 +
3282 +            () -> f.orTimeout(1L, null),
3283 +            () -> f.completeOnTimeout(42, 1L, null),
3284 +
3285 +            () -> CompletableFuture.failedFuture(null),
3286 +            () -> CompletableFuture.failedStage(null),
3287 +        };
3288 +
3289 +        assertThrows(NullPointerException.class, throwingActions);
3290 +        assertEquals(0, exec.count.get());
3291 +    }
3292 +
3293 +    /**
3294 +     * toCompletableFuture returns this CompletableFuture.
3295 +     */
3296 +    public void testToCompletableFuture() {
3297 +        CompletableFuture<Integer> f = new CompletableFuture<>();
3298 +        assertSame(f, f.toCompletableFuture());
3299 +    }
3300 +
3301 +    // jdk9
3302 +
3303 +    /**
3304 +     * newIncompleteFuture returns an incomplete CompletableFuture
3305 +     */
3306 +    public void testNewIncompleteFuture() {
3307 +        for (Integer v1 : new Integer[] { 1, null })
3308 +    {
3309 +        CompletableFuture<Integer> f = new CompletableFuture<>();
3310 +        CompletableFuture<Integer> g = f.newIncompleteFuture();
3311 +        checkIncomplete(f);
3312 +        checkIncomplete(g);
3313 +        f.complete(v1);
3314 +        checkCompletedNormally(f, v1);
3315 +        checkIncomplete(g);
3316 +        g.complete(v1);
3317 +        checkCompletedNormally(g, v1);
3318 +        assertSame(g.getClass(), CompletableFuture.class);
3319 +    }}
3320 +
3321 +    /**
3322 +     * completedStage returns a completed CompletionStage
3323 +     */
3324 +    public void testCompletedStage() {
3325 +        AtomicInteger x = new AtomicInteger(0);
3326 +        AtomicReference<Throwable> r = new AtomicReference<Throwable>();
3327 +        CompletionStage<Integer> f = CompletableFuture.completedStage(1);
3328 +        f.whenComplete((v, e) -> {if (e != null) r.set(e); else x.set(v);});
3329 +        assertEquals(x.get(), 1);
3330 +        assertNull(r.get());
3331 +    }
3332 +
3333 +    /**
3334 +     * defaultExecutor by default returns the commonPool if
3335 +     * it supports more than one thread.
3336 +     */
3337 +    public void testDefaultExecutor() {
3338 +        CompletableFuture<Integer> f = new CompletableFuture<>();
3339 +        Executor e = f.defaultExecutor();
3340 +        Executor c = ForkJoinPool.commonPool();
3341 +        if (ForkJoinPool.getCommonPoolParallelism() > 1)
3342 +            assertSame(e, c);
3343 +        else
3344 +            assertNotSame(e, c);
3345 +    }
3346 +
3347 +    /**
3348 +     * failedFuture returns a CompletableFuture completed
3349 +     * exceptionally with the given Exception
3350 +     */
3351 +    public void testFailedFuture() {
3352 +        CFException ex = new CFException();
3353 +        CompletableFuture<Integer> f = CompletableFuture.failedFuture(ex);
3354 +        checkCompletedExceptionally(f, ex);
3355 +    }
3356 +
3357 +    /**
3358 +     * failedFuture(null) throws NPE
3359 +     */
3360 +    public void testFailedFuture_null() {
3361 +        try {
3362 +            CompletableFuture<Integer> f = CompletableFuture.failedFuture(null);
3363 +            shouldThrow();
3364 +        } catch (NullPointerException success) {}
3365 +    }
3366 +
3367 +    /**
3368 +     * copy returns a CompletableFuture that is completed normally,
3369 +     * with the same value, when source is.
3370 +     */
3371 +    public void testCopy() {
3372 +        CompletableFuture<Integer> f = new CompletableFuture<>();
3373 +        CompletableFuture<Integer> g = f.copy();
3374 +        checkIncomplete(f);
3375 +        checkIncomplete(g);
3376 +        f.complete(1);
3377 +        checkCompletedNormally(f, 1);
3378 +        checkCompletedNormally(g, 1);
3379 +    }
3380 +
3381 +    /**
3382 +     * copy returns a CompletableFuture that is completed exceptionally
3383 +     * when source is.
3384 +     */
3385 +    public void testCopy2() {
3386 +        CompletableFuture<Integer> f = new CompletableFuture<>();
3387 +        CompletableFuture<Integer> g = f.copy();
3388 +        checkIncomplete(f);
3389 +        checkIncomplete(g);
3390 +        CFException ex = new CFException();
3391 +        f.completeExceptionally(ex);
3392 +        checkCompletedExceptionally(f, ex);
3393 +        checkCompletedWithWrappedException(g, ex);
3394      }
3395 +
3396 +    /**
3397 +     * minimalCompletionStage returns a CompletableFuture that is
3398 +     * completed normally, with the same value, when source is.
3399 +     */
3400 +    public void testMinimalCompletionStage() {
3401 +        CompletableFuture<Integer> f = new CompletableFuture<>();
3402 +        CompletionStage<Integer> g = f.minimalCompletionStage();
3403 +        AtomicInteger x = new AtomicInteger(0);
3404 +        AtomicReference<Throwable> r = new AtomicReference<Throwable>();
3405 +        checkIncomplete(f);
3406 +        g.whenComplete((v, e) -> {if (e != null) r.set(e); else x.set(v);});
3407 +        f.complete(1);
3408 +        checkCompletedNormally(f, 1);
3409 +        assertEquals(x.get(), 1);
3410 +        assertNull(r.get());
3411 +    }
3412 +
3413 +    /**
3414 +     * minimalCompletionStage returns a CompletableFuture that is
3415 +     * completed exceptionally when source is.
3416 +     */
3417 +    public void testMinimalCompletionStage2() {
3418 +        CompletableFuture<Integer> f = new CompletableFuture<>();
3419 +        CompletionStage<Integer> g = f.minimalCompletionStage();
3420 +        AtomicInteger x = new AtomicInteger(0);
3421 +        AtomicReference<Throwable> r = new AtomicReference<Throwable>();
3422 +        g.whenComplete((v, e) -> {if (e != null) r.set(e); else x.set(v);});
3423 +        checkIncomplete(f);
3424 +        CFException ex = new CFException();
3425 +        f.completeExceptionally(ex);
3426 +        checkCompletedExceptionally(f, ex);
3427 +        assertEquals(x.get(), 0);
3428 +        assertEquals(r.get().getCause(), ex);
3429 +    }
3430 +
3431 +    /**
3432 +     * failedStage returns a CompletionStage completed
3433 +     * exceptionally with the given Exception
3434 +     */
3435 +    public void testFailedStage() {
3436 +        CFException ex = new CFException();
3437 +        CompletionStage<Integer> f = CompletableFuture.failedStage(ex);
3438 +        AtomicInteger x = new AtomicInteger(0);
3439 +        AtomicReference<Throwable> r = new AtomicReference<Throwable>();
3440 +        f.whenComplete((v, e) -> {if (e != null) r.set(e); else x.set(v);});
3441 +        assertEquals(x.get(), 0);
3442 +        assertEquals(r.get(), ex);
3443 +    }
3444 +
3445 +    /**
3446 +     * completeAsync completes with value of given supplier
3447 +     */
3448 +    public void testCompleteAsync() {
3449 +        for (Integer v1 : new Integer[] { 1, null })
3450 +    {
3451 +        CompletableFuture<Integer> f = new CompletableFuture<>();
3452 +        f.completeAsync(() -> v1);
3453 +        f.join();
3454 +        checkCompletedNormally(f, v1);
3455 +    }}
3456 +
3457 +    /**
3458 +     * completeAsync completes exceptionally if given supplier throws
3459 +     */
3460 +    public void testCompleteAsync2() {
3461 +        CompletableFuture<Integer> f = new CompletableFuture<>();
3462 +        CFException ex = new CFException();
3463 +        f.completeAsync(() -> {if (true) throw ex; return 1;});
3464 +        try {
3465 +            f.join();
3466 +            shouldThrow();
3467 +        } catch (CompletionException success) {}
3468 +        checkCompletedWithWrappedException(f, ex);
3469 +    }
3470 +
3471 +    /**
3472 +     * completeAsync with given executor completes with value of given supplier
3473 +     */
3474 +    public void testCompleteAsync3() {
3475 +        for (Integer v1 : new Integer[] { 1, null })
3476 +    {
3477 +        CompletableFuture<Integer> f = new CompletableFuture<>();
3478 +        ThreadExecutor executor = new ThreadExecutor();
3479 +        f.completeAsync(() -> v1, executor);
3480 +        assertSame(v1, f.join());
3481 +        checkCompletedNormally(f, v1);
3482 +        assertEquals(1, executor.count.get());
3483 +    }}
3484 +
3485 +    /**
3486 +     * completeAsync with given executor completes exceptionally if
3487 +     * given supplier throws
3488 +     */
3489 +    public void testCompleteAsync4() {
3490 +        CompletableFuture<Integer> f = new CompletableFuture<>();
3491 +        CFException ex = new CFException();
3492 +        ThreadExecutor executor = new ThreadExecutor();
3493 +        f.completeAsync(() -> {if (true) throw ex; return 1;}, executor);
3494 +        try {
3495 +            f.join();
3496 +            shouldThrow();
3497 +        } catch (CompletionException success) {}
3498 +        checkCompletedWithWrappedException(f, ex);
3499 +        assertEquals(1, executor.count.get());
3500 +    }
3501 +
3502 +    /**
3503 +     * orTimeout completes with TimeoutException if not complete
3504 +     */
3505 +    public void testOrTimeout_timesOut() {
3506 +        long timeoutMillis = timeoutMillis();
3507 +        CompletableFuture<Integer> f = new CompletableFuture<>();
3508 +        long startTime = System.nanoTime();
3509 +        f.orTimeout(timeoutMillis, MILLISECONDS);
3510 +        checkCompletedWithTimeoutException(f);
3511 +        assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
3512 +    }
3513 +
3514 +    /**
3515 +     * orTimeout completes normally if completed before timeout
3516 +     */
3517 +    public void testOrTimeout_completed() {
3518 +        for (Integer v1 : new Integer[] { 1, null })
3519 +    {
3520 +        CompletableFuture<Integer> f = new CompletableFuture<>();
3521 +        CompletableFuture<Integer> g = new CompletableFuture<>();
3522 +        long startTime = System.nanoTime();
3523 +        f.complete(v1);
3524 +        f.orTimeout(LONG_DELAY_MS, MILLISECONDS);
3525 +        g.orTimeout(LONG_DELAY_MS, MILLISECONDS);
3526 +        g.complete(v1);
3527 +        checkCompletedNormally(f, v1);
3528 +        checkCompletedNormally(g, v1);
3529 +        assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS / 2);
3530 +    }}
3531 +
3532 +    /**
3533 +     * completeOnTimeout completes with given value if not complete
3534 +     */
3535 +    public void testCompleteOnTimeout_timesOut() {
3536 +        testInParallel(() -> testCompleteOnTimeout_timesOut(42),
3537 +                       () -> testCompleteOnTimeout_timesOut(null));
3538 +    }
3539 +
3540 +    public void testCompleteOnTimeout_timesOut(Integer v) {
3541 +        long timeoutMillis = timeoutMillis();
3542 +        CompletableFuture<Integer> f = new CompletableFuture<>();
3543 +        long startTime = System.nanoTime();
3544 +        f.completeOnTimeout(v, timeoutMillis, MILLISECONDS);
3545 +        assertSame(v, f.join());
3546 +        assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
3547 +        f.complete(99);         // should have no effect
3548 +        checkCompletedNormally(f, v);
3549 +    }
3550 +
3551 +    /**
3552 +     * completeOnTimeout has no effect if completed within timeout
3553 +     */
3554 +    public void testCompleteOnTimeout_completed() {
3555 +        for (Integer v1 : new Integer[] { 1, null })
3556 +    {
3557 +        CompletableFuture<Integer> f = new CompletableFuture<>();
3558 +        CompletableFuture<Integer> g = new CompletableFuture<>();
3559 +        long startTime = System.nanoTime();
3560 +        f.complete(v1);
3561 +        f.completeOnTimeout(-1, LONG_DELAY_MS, MILLISECONDS);
3562 +        g.completeOnTimeout(-1, LONG_DELAY_MS, MILLISECONDS);
3563 +        g.complete(v1);
3564 +        checkCompletedNormally(f, v1);
3565 +        checkCompletedNormally(g, v1);
3566 +        assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS / 2);
3567 +    }}
3568 +
3569 +    /**
3570 +     * delayedExecutor returns an executor that delays submission
3571 +     */
3572 +    public void testDelayedExecutor() {
3573 +        testInParallel(() -> testDelayedExecutor(null, null),
3574 +                       () -> testDelayedExecutor(null, 1),
3575 +                       () -> testDelayedExecutor(new ThreadExecutor(), 1),
3576 +                       () -> testDelayedExecutor(new ThreadExecutor(), 1));
3577 +    }
3578 +
3579 +    public void testDelayedExecutor(Executor executor, Integer v) throws Exception {
3580 +        long timeoutMillis = timeoutMillis();
3581 +        // Use an "unreasonably long" long timeout to catch lingering threads
3582 +        long longTimeoutMillis = 1000 * 60 * 60 * 24;
3583 +        final Executor delayer, longDelayer;
3584 +        if (executor == null) {
3585 +            delayer = CompletableFuture.delayedExecutor(timeoutMillis, MILLISECONDS);
3586 +            longDelayer = CompletableFuture.delayedExecutor(longTimeoutMillis, MILLISECONDS);
3587 +        } else {
3588 +            delayer = CompletableFuture.delayedExecutor(timeoutMillis, MILLISECONDS, executor);
3589 +            longDelayer = CompletableFuture.delayedExecutor(longTimeoutMillis, MILLISECONDS, executor);
3590 +        }
3591 +        long startTime = System.nanoTime();
3592 +        CompletableFuture<Integer> f =
3593 +            CompletableFuture.supplyAsync(() -> v, delayer);
3594 +        CompletableFuture<Integer> g =
3595 +            CompletableFuture.supplyAsync(() -> v, longDelayer);
3596 +
3597 +        assertNull(g.getNow(null));
3598 +
3599 +        assertSame(v, f.get(LONG_DELAY_MS, MILLISECONDS));
3600 +        long millisElapsed = millisElapsedSince(startTime);
3601 +        assertTrue(millisElapsed >= timeoutMillis);
3602 +        assertTrue(millisElapsed < LONG_DELAY_MS / 2);
3603 +
3604 +        checkCompletedNormally(f, v);
3605 +
3606 +        checkIncomplete(g);
3607 +        assertTrue(g.cancel(true));
3608 +    }
3609 +
3610 +    //--- tests of implementation details; not part of official tck ---
3611 +
3612 +    Object resultOf(CompletableFuture<?> f) {
3613 +        try {
3614 +            java.lang.reflect.Field resultField
3615 +                = CompletableFuture.class.getDeclaredField("result");
3616 +            resultField.setAccessible(true);
3617 +            return resultField.get(f);
3618 +        } catch (Throwable t) { throw new AssertionError(t); }
3619 +    }
3620 +
3621 +    public void testExceptionPropagationReusesResultObject() {
3622 +        if (!testImplementationDetails) return;
3623 +        for (ExecutionMode m : ExecutionMode.values())
3624 +    {
3625 +        final CFException ex = new CFException();
3626 +        final CompletableFuture<Integer> v42 = CompletableFuture.completedFuture(42);
3627 +        final CompletableFuture<Integer> incomplete = new CompletableFuture<>();
3628 +
3629 +        List<Function<CompletableFuture<Integer>, CompletableFuture<?>>> funs
3630 +            = new ArrayList<>();
3631 +
3632 +        funs.add((y) -> m.thenRun(y, new Noop(m)));
3633 +        funs.add((y) -> m.thenAccept(y, new NoopConsumer(m)));
3634 +        funs.add((y) -> m.thenApply(y, new IncFunction(m)));
3635 +
3636 +        funs.add((y) -> m.runAfterEither(y, incomplete, new Noop(m)));
3637 +        funs.add((y) -> m.acceptEither(y, incomplete, new NoopConsumer(m)));
3638 +        funs.add((y) -> m.applyToEither(y, incomplete, new IncFunction(m)));
3639 +
3640 +        funs.add((y) -> m.runAfterBoth(y, v42, new Noop(m)));
3641 +        funs.add((y) -> m.thenAcceptBoth(y, v42, new SubtractAction(m)));
3642 +        funs.add((y) -> m.thenCombine(y, v42, new SubtractFunction(m)));
3643 +
3644 +        funs.add((y) -> m.whenComplete(y, (Integer x, Throwable t) -> {}));
3645 +
3646 +        funs.add((y) -> m.thenCompose(y, new CompletableFutureInc(m)));
3647 +
3648 +        funs.add((y) -> CompletableFuture.allOf(new CompletableFuture<?>[] {y, v42}));
3649 +        funs.add((y) -> CompletableFuture.anyOf(new CompletableFuture<?>[] {y, incomplete}));
3650 +
3651 +        for (Function<CompletableFuture<Integer>, CompletableFuture<?>>
3652 +                 fun : funs) {
3653 +            CompletableFuture<Integer> f = new CompletableFuture<>();
3654 +            f.completeExceptionally(ex);
3655 +            CompletableFuture<Integer> src = m.thenApply(f, new IncFunction(m));
3656 +            checkCompletedWithWrappedException(src, ex);
3657 +            CompletableFuture<?> dep = fun.apply(src);
3658 +            checkCompletedWithWrappedException(dep, ex);
3659 +            assertSame(resultOf(src), resultOf(dep));
3660 +        }
3661 +
3662 +        for (Function<CompletableFuture<Integer>, CompletableFuture<?>>
3663 +                 fun : funs) {
3664 +            CompletableFuture<Integer> f = new CompletableFuture<>();
3665 +            CompletableFuture<Integer> src = m.thenApply(f, new IncFunction(m));
3666 +            CompletableFuture<?> dep = fun.apply(src);
3667 +            f.completeExceptionally(ex);
3668 +            checkCompletedWithWrappedException(src, ex);
3669 +            checkCompletedWithWrappedException(dep, ex);
3670 +            assertSame(resultOf(src), resultOf(dep));
3671 +        }
3672 +
3673 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
3674 +        for (Function<CompletableFuture<Integer>, CompletableFuture<?>>
3675 +                 fun : funs) {
3676 +            CompletableFuture<Integer> f = new CompletableFuture<>();
3677 +            f.cancel(mayInterruptIfRunning);
3678 +            checkCancelled(f);
3679 +            CompletableFuture<Integer> src = m.thenApply(f, new IncFunction(m));
3680 +            checkCompletedWithWrappedCancellationException(src);
3681 +            CompletableFuture<?> dep = fun.apply(src);
3682 +            checkCompletedWithWrappedCancellationException(dep);
3683 +            assertSame(resultOf(src), resultOf(dep));
3684 +        }
3685 +
3686 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
3687 +        for (Function<CompletableFuture<Integer>, CompletableFuture<?>>
3688 +                 fun : funs) {
3689 +            CompletableFuture<Integer> f = new CompletableFuture<>();
3690 +            CompletableFuture<Integer> src = m.thenApply(f, new IncFunction(m));
3691 +            CompletableFuture<?> dep = fun.apply(src);
3692 +            f.cancel(mayInterruptIfRunning);
3693 +            checkCancelled(f);
3694 +            checkCompletedWithWrappedCancellationException(src);
3695 +            checkCompletedWithWrappedCancellationException(dep);
3696 +            assertSame(resultOf(src), resultOf(dep));
3697 +        }
3698 +    }}
3699 +
3700 +    /**
3701 +     * Minimal completion stages throw UOE for all non-CompletionStage methods
3702 +     */
3703 +    public void testMinimalCompletionStage_minimality() {
3704 +        if (!testImplementationDetails) return;
3705 +        Function<Method, String> toSignature =
3706 +            (method) -> method.getName() + Arrays.toString(method.getParameterTypes());
3707 +        Predicate<Method> isNotStatic =
3708 +            (method) -> (method.getModifiers() & Modifier.STATIC) == 0;
3709 +        List<Method> minimalMethods =
3710 +            Stream.of(Object.class, CompletionStage.class)
3711 +            .flatMap((klazz) -> Stream.of(klazz.getMethods()))
3712 +            .filter(isNotStatic)
3713 +            .collect(Collectors.toList());
3714 +        // Methods from CompletableFuture permitted NOT to throw UOE
3715 +        String[] signatureWhitelist = {
3716 +            "newIncompleteFuture[]",
3717 +            "defaultExecutor[]",
3718 +            "minimalCompletionStage[]",
3719 +            "copy[]",
3720 +        };
3721 +        Set<String> permittedMethodSignatures =
3722 +            Stream.concat(minimalMethods.stream().map(toSignature),
3723 +                          Stream.of(signatureWhitelist))
3724 +            .collect(Collectors.toSet());
3725 +        List<Method> allMethods = Stream.of(CompletableFuture.class.getMethods())
3726 +            .filter(isNotStatic)
3727 +            .filter((method) -> !permittedMethodSignatures.contains(toSignature.apply(method)))
3728 +            .collect(Collectors.toList());
3729 +
3730 +        CompletionStage<Integer> minimalStage =
3731 +            new CompletableFuture<Integer>().minimalCompletionStage();
3732 +
3733 +        List<Method> bugs = new ArrayList<>();
3734 +        for (Method method : allMethods) {
3735 +            Class<?>[] parameterTypes = method.getParameterTypes();
3736 +            Object[] args = new Object[parameterTypes.length];
3737 +            // Manufacture boxed primitives for primitive params
3738 +            for (int i = 0; i < args.length; i++) {
3739 +                Class<?> type = parameterTypes[i];
3740 +                if (parameterTypes[i] == boolean.class)
3741 +                    args[i] = false;
3742 +                else if (parameterTypes[i] == int.class)
3743 +                    args[i] = 0;
3744 +                else if (parameterTypes[i] == long.class)
3745 +                    args[i] = 0L;
3746 +            }
3747 +            try {
3748 +                method.invoke(minimalStage, args);
3749 +                bugs.add(method);
3750 +            }
3751 +            catch (java.lang.reflect.InvocationTargetException expected) {
3752 +                if (! (expected.getCause() instanceof UnsupportedOperationException)) {
3753 +                    bugs.add(method);
3754 +                    // expected.getCause().printStackTrace();
3755 +                }
3756 +            }
3757 +            catch (ReflectiveOperationException bad) { throw new Error(bad); }
3758 +        }
3759 +        if (!bugs.isEmpty())
3760 +            throw new Error("Methods did not throw UOE: " + bugs.toString());
3761 +    }
3762 +
3763 + //     static <U> U join(CompletionStage<U> stage) {
3764 + //         CompletableFuture<U> f = new CompletableFuture<>();
3765 + //         stage.whenComplete((v, ex) -> {
3766 + //             if (ex != null) f.completeExceptionally(ex); else f.complete(v);
3767 + //         });
3768 + //         return f.join();
3769 + //     }
3770 +
3771 + //     static <U> boolean isDone(CompletionStage<U> stage) {
3772 + //         CompletableFuture<U> f = new CompletableFuture<>();
3773 + //         stage.whenComplete((v, ex) -> {
3774 + //             if (ex != null) f.completeExceptionally(ex); else f.complete(v);
3775 + //         });
3776 + //         return f.isDone();
3777 + //     }
3778 +
3779 + //     static <U> U join2(CompletionStage<U> stage) {
3780 + //         return stage.toCompletableFuture().copy().join();
3781 + //     }
3782 +
3783 + //     static <U> boolean isDone2(CompletionStage<U> stage) {
3784 + //         return stage.toCompletableFuture().copy().isDone();
3785 + //     }
3786 +
3787   }

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