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Comparing jsr166/src/test/tck/CompletableFutureTest.java (file contents):
Revision 1.2 by jsr166, Wed Feb 6 20:29:55 2013 UTC vs.
Revision 1.100 by jsr166, Thu Jan 15 18:34:19 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.util.ArrayList;
12 > import java.util.List;
13 > import java.util.Objects;
14   import java.util.concurrent.Callable;
15   import java.util.concurrent.CancellationException;
12 import java.util.concurrent.CountDownLatch;
13 import java.util.concurrent.ExecutionException;
14 import java.util.concurrent.Future;
16   import java.util.concurrent.CompletableFuture;
17 + import java.util.concurrent.CompletionException;
18 + import java.util.concurrent.CompletionStage;
19 + import java.util.concurrent.ExecutionException;
20 + import java.util.concurrent.Executor;
21 + import java.util.concurrent.ForkJoinPool;
22 + import java.util.concurrent.ForkJoinTask;
23   import java.util.concurrent.TimeoutException;
24   import java.util.concurrent.atomic.AtomicInteger;
25 < import static java.util.concurrent.TimeUnit.MILLISECONDS;
26 < import static java.util.concurrent.TimeUnit.SECONDS;
27 < import java.util.*;
25 > import java.util.function.BiConsumer;
26 > import java.util.function.BiFunction;
27 > import java.util.function.Consumer;
28 > import java.util.function.Function;
29 > import java.util.function.Supplier;
30 >
31 > import junit.framework.Test;
32 > import junit.framework.TestSuite;
33  
34   public class CompletableFutureTest extends JSR166TestCase {
35  
# Line 28 | Line 40 | public class CompletableFutureTest exten
40          return new TestSuite(CompletableFutureTest.class);
41      }
42  
43 +    static class CFException extends RuntimeException {}
44 +
45 +    void checkIncomplete(CompletableFuture<?> f) {
46 +        assertFalse(f.isDone());
47 +        assertFalse(f.isCancelled());
48 +        assertTrue(f.toString().contains("[Not completed]"));
49 +        try {
50 +            assertNull(f.getNow(null));
51 +        } catch (Throwable fail) { threadUnexpectedException(fail); }
52 +        try {
53 +            f.get(0L, SECONDS);
54 +            shouldThrow();
55 +        }
56 +        catch (TimeoutException success) {}
57 +        catch (Throwable fail) { threadUnexpectedException(fail); }
58 +    }
59 +
60 +    <T> void checkCompletedNormally(CompletableFuture<T> f, T value) {
61 +        checkTimedGet(f, value);
62 +
63 +        try {
64 +            assertEquals(value, f.join());
65 +        } catch (Throwable fail) { threadUnexpectedException(fail); }
66 +        try {
67 +            assertEquals(value, f.getNow(null));
68 +        } catch (Throwable fail) { threadUnexpectedException(fail); }
69 +        try {
70 +            assertEquals(value, f.get());
71 +        } catch (Throwable fail) { threadUnexpectedException(fail); }
72 +        assertTrue(f.isDone());
73 +        assertFalse(f.isCancelled());
74 +        assertFalse(f.isCompletedExceptionally());
75 +        assertTrue(f.toString().contains("[Completed normally]"));
76 +    }
77 +
78 +    void checkCompletedWithWrappedCFException(CompletableFuture<?> f) {
79 +        long startTime = System.nanoTime();
80 +        long timeoutMillis = LONG_DELAY_MS;
81 +        try {
82 +            f.get(timeoutMillis, MILLISECONDS);
83 +            shouldThrow();
84 +        } catch (ExecutionException success) {
85 +            assertTrue(success.getCause() instanceof CFException);
86 +        } catch (Throwable fail) { threadUnexpectedException(fail); }
87 +        assertTrue(millisElapsedSince(startTime) < timeoutMillis/2);
88 +
89 +        try {
90 +            f.join();
91 +            shouldThrow();
92 +        } catch (CompletionException success) {
93 +            assertTrue(success.getCause() instanceof CFException);
94 +        }
95 +        try {
96 +            f.getNow(null);
97 +            shouldThrow();
98 +        } catch (CompletionException success) {
99 +            assertTrue(success.getCause() instanceof CFException);
100 +        }
101 +        try {
102 +            f.get();
103 +            shouldThrow();
104 +        } catch (ExecutionException success) {
105 +            assertTrue(success.getCause() instanceof CFException);
106 +        } catch (Throwable fail) { threadUnexpectedException(fail); }
107 +        assertTrue(f.isDone());
108 +        assertFalse(f.isCancelled());
109 +        assertTrue(f.toString().contains("[Completed exceptionally]"));
110 +    }
111 +
112 +    <U> void checkCompletedExceptionallyWithRootCause(CompletableFuture<U> f,
113 +                                                      Throwable ex) {
114 +        long startTime = System.nanoTime();
115 +        long timeoutMillis = LONG_DELAY_MS;
116 +        try {
117 +            f.get(timeoutMillis, MILLISECONDS);
118 +            shouldThrow();
119 +        } catch (ExecutionException success) {
120 +            assertSame(ex, success.getCause());
121 +        } catch (Throwable fail) { threadUnexpectedException(fail); }
122 +        assertTrue(millisElapsedSince(startTime) < timeoutMillis/2);
123 +
124 +        try {
125 +            f.join();
126 +            shouldThrow();
127 +        } catch (CompletionException success) {
128 +            assertSame(ex, success.getCause());
129 +        }
130 +        try {
131 +            f.getNow(null);
132 +            shouldThrow();
133 +        } catch (CompletionException success) {
134 +            assertSame(ex, success.getCause());
135 +        }
136 +        try {
137 +            f.get();
138 +            shouldThrow();
139 +        } catch (ExecutionException success) {
140 +            assertSame(ex, success.getCause());
141 +        } catch (Throwable fail) { threadUnexpectedException(fail); }
142 +
143 +        assertTrue(f.isDone());
144 +        assertFalse(f.isCancelled());
145 +        assertTrue(f.toString().contains("[Completed exceptionally]"));
146 +    }
147 +
148 +    <U> void checkCompletedWithWrappedException(CompletableFuture<U> f,
149 +                                                Throwable ex) {
150 +        checkCompletedExceptionallyWithRootCause(f, ex);
151 +        try {
152 +            CompletableFuture<Throwable> spy = f.handle
153 +                ((U u, Throwable t) -> t);
154 +            assertTrue(spy.join() instanceof CompletionException);
155 +            assertSame(ex, spy.join().getCause());
156 +        } catch (Throwable fail) { threadUnexpectedException(fail); }
157 +    }
158 +
159 +    <U> void checkCompletedExceptionally(CompletableFuture<U> f, Throwable ex) {
160 +        checkCompletedExceptionallyWithRootCause(f, ex);
161 +        try {
162 +            CompletableFuture<Throwable> spy = f.handle
163 +                ((U u, Throwable t) -> t);
164 +            assertSame(ex, spy.join());
165 +        } catch (Throwable fail) { threadUnexpectedException(fail); }
166 +    }
167 +
168 +    void checkCancelled(CompletableFuture<?> f) {
169 +        long startTime = System.nanoTime();
170 +        long timeoutMillis = LONG_DELAY_MS;
171 +        try {
172 +            f.get(timeoutMillis, MILLISECONDS);
173 +            shouldThrow();
174 +        } catch (CancellationException success) {
175 +        } catch (Throwable fail) { threadUnexpectedException(fail); }
176 +        assertTrue(millisElapsedSince(startTime) < timeoutMillis/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 +        assertTrue(f.isDone());
192 +        assertTrue(f.isCompletedExceptionally());
193 +        assertTrue(f.isCancelled());
194 +        assertTrue(f.toString().contains("[Completed exceptionally]"));
195 +    }
196 +
197 +    void checkCompletedWithWrappedCancellationException(CompletableFuture<?> f) {
198 +        long startTime = System.nanoTime();
199 +        long timeoutMillis = LONG_DELAY_MS;
200 +        try {
201 +            f.get(timeoutMillis, MILLISECONDS);
202 +            shouldThrow();
203 +        } catch (ExecutionException success) {
204 +            assertTrue(success.getCause() instanceof CancellationException);
205 +        } catch (Throwable fail) { threadUnexpectedException(fail); }
206 +        assertTrue(millisElapsedSince(startTime) < timeoutMillis/2);
207 +
208 +        try {
209 +            f.join();
210 +            shouldThrow();
211 +        } catch (CompletionException success) {
212 +            assertTrue(success.getCause() instanceof CancellationException);
213 +        }
214 +        try {
215 +            f.getNow(null);
216 +            shouldThrow();
217 +        } catch (CompletionException success) {
218 +            assertTrue(success.getCause() instanceof CancellationException);
219 +        }
220 +        try {
221 +            f.get();
222 +            shouldThrow();
223 +        } catch (ExecutionException success) {
224 +            assertTrue(success.getCause() instanceof CancellationException);
225 +        } catch (Throwable fail) { threadUnexpectedException(fail); }
226 +        assertTrue(f.isDone());
227 +        assertFalse(f.isCancelled());
228 +        assertTrue(f.isCompletedExceptionally());
229 +        assertTrue(f.toString().contains("[Completed exceptionally]"));
230 +    }
231 +
232 +    /**
233 +     * A newly constructed CompletableFuture is incomplete, as indicated
234 +     * by methods isDone, isCancelled, and getNow
235 +     */
236 +    public void testConstructor() {
237 +        CompletableFuture<Integer> f = new CompletableFuture<>();
238 +        checkIncomplete(f);
239 +    }
240 +
241 +    /**
242 +     * complete completes normally, as indicated by methods isDone,
243 +     * isCancelled, join, get, and getNow
244 +     */
245 +    public void testComplete() {
246 +        for (Integer v1 : new Integer[] { 1, null })
247 +    {
248 +        CompletableFuture<Integer> f = new CompletableFuture<>();
249 +        checkIncomplete(f);
250 +        assertTrue(f.complete(v1));
251 +        assertFalse(f.complete(v1));
252 +        checkCompletedNormally(f, v1);
253 +    }}
254 +
255 +    /**
256 +     * completeExceptionally completes exceptionally, as indicated by
257 +     * methods isDone, isCancelled, join, get, and getNow
258 +     */
259 +    public void testCompleteExceptionally() {
260 +        CompletableFuture<Integer> f = new CompletableFuture<>();
261 +        CFException ex = new CFException();
262 +        checkIncomplete(f);
263 +        f.completeExceptionally(ex);
264 +        checkCompletedExceptionally(f, ex);
265 +    }
266 +
267 +    /**
268 +     * cancel completes exceptionally and reports cancelled, as indicated by
269 +     * methods isDone, isCancelled, join, get, and getNow
270 +     */
271 +    public void testCancel() {
272 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
273 +    {
274 +        CompletableFuture<Integer> f = new CompletableFuture<>();
275 +        checkIncomplete(f);
276 +        assertTrue(f.cancel(true));
277 +        assertTrue(f.cancel(true));
278 +        checkCancelled(f);
279 +    }}
280 +
281 +    /**
282 +     * obtrudeValue forces completion with given value
283 +     */
284 +    public void testObtrudeValue() {
285 +        CompletableFuture<Integer> f = new CompletableFuture<>();
286 +        checkIncomplete(f);
287 +        assertTrue(f.complete(one));
288 +        checkCompletedNormally(f, one);
289 +        f.obtrudeValue(three);
290 +        checkCompletedNormally(f, three);
291 +        f.obtrudeValue(two);
292 +        checkCompletedNormally(f, two);
293 +        f = new CompletableFuture<>();
294 +        f.obtrudeValue(three);
295 +        checkCompletedNormally(f, three);
296 +        f.obtrudeValue(null);
297 +        checkCompletedNormally(f, null);
298 +        f = new CompletableFuture<>();
299 +        f.completeExceptionally(new CFException());
300 +        f.obtrudeValue(four);
301 +        checkCompletedNormally(f, four);
302 +    }
303 +
304 +    /**
305 +     * obtrudeException forces completion with given exception
306 +     */
307 +    public void testObtrudeException() {
308 +        for (Integer v1 : new Integer[] { 1, null })
309 +    {
310 +        CFException ex;
311 +        CompletableFuture<Integer> f;
312 +
313 +        f = new CompletableFuture<>();
314 +        assertTrue(f.complete(v1));
315 +        for (int i = 0; i < 2; i++) {
316 +            f.obtrudeException(ex = new CFException());
317 +            checkCompletedExceptionally(f, ex);
318 +        }
319 +
320 +        f = new CompletableFuture<>();
321 +        for (int i = 0; i < 2; i++) {
322 +            f.obtrudeException(ex = new CFException());
323 +            checkCompletedExceptionally(f, ex);
324 +        }
325 +
326 +        f = new CompletableFuture<>();
327 +        f.completeExceptionally(ex = new CFException());
328 +        f.obtrudeValue(v1);
329 +        checkCompletedNormally(f, v1);
330 +        f.obtrudeException(ex = new CFException());
331 +        checkCompletedExceptionally(f, ex);
332 +        f.completeExceptionally(new CFException());
333 +        checkCompletedExceptionally(f, ex);
334 +        assertFalse(f.complete(v1));
335 +        checkCompletedExceptionally(f, ex);
336 +    }}
337 +
338 +    /**
339 +     * getNumberOfDependents returns number of dependent tasks
340 +     */
341 +    public void testGetNumberOfDependents() {
342 +        for (ExecutionMode m : ExecutionMode.values())
343 +        for (Integer v1 : new Integer[] { 1, null })
344 +    {
345 +        CompletableFuture<Integer> f = new CompletableFuture<>();
346 +        assertEquals(0, f.getNumberOfDependents());
347 +        final CompletableFuture<Void> g = m.thenRun(f, new Noop(m));
348 +        assertEquals(1, f.getNumberOfDependents());
349 +        assertEquals(0, g.getNumberOfDependents());
350 +        final CompletableFuture<Void> h = m.thenRun(f, new Noop(m));
351 +        assertEquals(2, f.getNumberOfDependents());
352 +        assertEquals(0, h.getNumberOfDependents());
353 +        assertTrue(f.complete(v1));
354 +        checkCompletedNormally(g, null);
355 +        checkCompletedNormally(h, null);
356 +        assertEquals(0, f.getNumberOfDependents());
357 +        assertEquals(0, g.getNumberOfDependents());
358 +        assertEquals(0, h.getNumberOfDependents());
359 +    }}
360 +
361 +    /**
362 +     * toString indicates current completion state
363 +     */
364      public void testToString() {
365          CompletableFuture<String> f;
366  
367          f = new CompletableFuture<String>();
368          assertTrue(f.toString().contains("[Not completed]"));
369  
370 <        f.complete("foo");
370 >        assertTrue(f.complete("foo"));
371          assertTrue(f.toString().contains("[Completed normally]"));
372  
373          f = new CompletableFuture<String>();
374 <        f.completeExceptionally(new IndexOutOfBoundsException());
374 >        assertTrue(f.completeExceptionally(new IndexOutOfBoundsException()));
375          assertTrue(f.toString().contains("[Completed exceptionally]"));
376 +
377 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false }) {
378 +            f = new CompletableFuture<String>();
379 +            assertTrue(f.cancel(mayInterruptIfRunning));
380 +            assertTrue(f.toString().contains("[Completed exceptionally]"));
381 +        }
382 +    }
383 +
384 +    /**
385 +     * completedFuture returns a completed CompletableFuture with given value
386 +     */
387 +    public void testCompletedFuture() {
388 +        CompletableFuture<String> f = CompletableFuture.completedFuture("test");
389 +        checkCompletedNormally(f, "test");
390 +    }
391 +
392 +    abstract class CheckedAction {
393 +        int invocationCount = 0;
394 +        final ExecutionMode m;
395 +        CheckedAction(ExecutionMode m) { this.m = m; }
396 +        void invoked() {
397 +            m.checkExecutionMode();
398 +            assertEquals(0, invocationCount++);
399 +        }
400 +        void assertNotInvoked() { assertEquals(0, invocationCount); }
401 +        void assertInvoked() { assertEquals(1, invocationCount); }
402 +    }
403 +
404 +    abstract class CheckedIntegerAction extends CheckedAction {
405 +        Integer value;
406 +        CheckedIntegerAction(ExecutionMode m) { super(m); }
407 +        void assertValue(Integer expected) {
408 +            assertInvoked();
409 +            assertEquals(expected, value);
410 +        }
411 +    }
412 +
413 +    class IntegerSupplier extends CheckedAction
414 +        implements Supplier<Integer>
415 +    {
416 +        final Integer value;
417 +        IntegerSupplier(ExecutionMode m, Integer value) {
418 +            super(m);
419 +            this.value = value;
420 +        }
421 +        public Integer get() {
422 +            invoked();
423 +            return value;
424 +        }
425 +    }
426 +
427 +    // A function that handles and produces null values as well.
428 +    static Integer inc(Integer x) {
429 +        return (x == null) ? null : x + 1;
430 +    }
431 +
432 +    class NoopConsumer extends CheckedIntegerAction
433 +        implements Consumer<Integer>
434 +    {
435 +        NoopConsumer(ExecutionMode m) { super(m); }
436 +        public void accept(Integer x) {
437 +            invoked();
438 +            value = x;
439 +        }
440 +    }
441 +
442 +    class IncFunction extends CheckedIntegerAction
443 +        implements Function<Integer,Integer>
444 +    {
445 +        IncFunction(ExecutionMode m) { super(m); }
446 +        public Integer apply(Integer x) {
447 +            invoked();
448 +            return value = inc(x);
449 +        }
450 +    }
451 +
452 +    // Choose non-commutative actions for better coverage
453 +    // A non-commutative function that handles and produces null values as well.
454 +    static Integer subtract(Integer x, Integer y) {
455 +        return (x == null && y == null) ? null :
456 +            ((x == null) ? 42 : x.intValue())
457 +            - ((y == null) ? 99 : y.intValue());
458 +    }
459 +
460 +    class SubtractAction extends CheckedIntegerAction
461 +        implements BiConsumer<Integer, Integer>
462 +    {
463 +        SubtractAction(ExecutionMode m) { super(m); }
464 +        public void accept(Integer x, Integer y) {
465 +            invoked();
466 +            value = subtract(x, y);
467 +        }
468 +    }
469 +
470 +    class SubtractFunction extends CheckedIntegerAction
471 +        implements BiFunction<Integer, Integer, Integer>
472 +    {
473 +        SubtractFunction(ExecutionMode m) { super(m); }
474 +        public Integer apply(Integer x, Integer y) {
475 +            invoked();
476 +            return value = subtract(x, y);
477 +        }
478 +    }
479 +
480 +    class Noop extends CheckedAction implements Runnable {
481 +        Noop(ExecutionMode m) { super(m); }
482 +        public void run() {
483 +            invoked();
484 +        }
485 +    }
486 +
487 +    class FailingSupplier extends CheckedAction
488 +        implements Supplier<Integer>
489 +    {
490 +        FailingSupplier(ExecutionMode m) { super(m); }
491 +        public Integer get() {
492 +            invoked();
493 +            throw new CFException();
494 +        }
495 +    }
496 +
497 +    class FailingConsumer extends CheckedIntegerAction
498 +        implements Consumer<Integer>
499 +    {
500 +        FailingConsumer(ExecutionMode m) { super(m); }
501 +        public void accept(Integer x) {
502 +            invoked();
503 +            value = x;
504 +            throw new CFException();
505 +        }
506 +    }
507 +
508 +    class FailingBiConsumer extends CheckedIntegerAction
509 +        implements BiConsumer<Integer, Integer>
510 +    {
511 +        FailingBiConsumer(ExecutionMode m) { super(m); }
512 +        public void accept(Integer x, Integer y) {
513 +            invoked();
514 +            value = subtract(x, y);
515 +            throw new CFException();
516 +        }
517 +    }
518 +
519 +    class FailingFunction extends CheckedIntegerAction
520 +        implements Function<Integer, Integer>
521 +    {
522 +        FailingFunction(ExecutionMode m) { super(m); }
523 +        public Integer apply(Integer x) {
524 +            invoked();
525 +            value = x;
526 +            throw new CFException();
527 +        }
528 +    }
529 +
530 +    class FailingBiFunction extends CheckedIntegerAction
531 +        implements BiFunction<Integer, Integer, Integer>
532 +    {
533 +        FailingBiFunction(ExecutionMode m) { super(m); }
534 +        public Integer apply(Integer x, Integer y) {
535 +            invoked();
536 +            value = subtract(x, y);
537 +            throw new CFException();
538 +        }
539 +    }
540 +
541 +    class FailingRunnable extends CheckedAction implements Runnable {
542 +        FailingRunnable(ExecutionMode m) { super(m); }
543 +        public void run() {
544 +            invoked();
545 +            throw new CFException();
546 +        }
547 +    }
548 +
549 +    class CompletableFutureInc extends CheckedIntegerAction
550 +        implements Function<Integer, CompletableFuture<Integer>>
551 +    {
552 +        CompletableFutureInc(ExecutionMode m) { super(m); }
553 +        public CompletableFuture<Integer> apply(Integer x) {
554 +            invoked();
555 +            value = x;
556 +            CompletableFuture<Integer> f = new CompletableFuture<>();
557 +            assertTrue(f.complete(inc(x)));
558 +            return f;
559 +        }
560 +    }
561 +
562 +    class FailingCompletableFutureFunction extends CheckedIntegerAction
563 +        implements Function<Integer, CompletableFuture<Integer>>
564 +    {
565 +        FailingCompletableFutureFunction(ExecutionMode m) { super(m); }
566 +        public CompletableFuture<Integer> apply(Integer x) {
567 +            invoked();
568 +            value = x;
569 +            throw new CFException();
570 +        }
571 +    }
572 +
573 +    // Used for explicit executor tests
574 +    static final class ThreadExecutor implements Executor {
575 +        final AtomicInteger count = new AtomicInteger(0);
576 +        static final ThreadGroup tg = new ThreadGroup("ThreadExecutor");
577 +        static boolean startedCurrentThread() {
578 +            return Thread.currentThread().getThreadGroup() == tg;
579 +        }
580 +
581 +        public void execute(Runnable r) {
582 +            count.getAndIncrement();
583 +            new Thread(tg, r).start();
584 +        }
585 +    }
586 +
587 +    static final boolean defaultExecutorIsCommonPool
588 +        = ForkJoinPool.getCommonPoolParallelism() > 1;
589 +
590 +    /**
591 +     * Permits the testing of parallel code for the 3 different
592 +     * execution modes without copy/pasting all the test methods.
593 +     */
594 +    enum ExecutionMode {
595 +        SYNC {
596 +            public void checkExecutionMode() {
597 +                assertFalse(ThreadExecutor.startedCurrentThread());
598 +                assertNull(ForkJoinTask.getPool());
599 +            }
600 +            public CompletableFuture<Void> runAsync(Runnable a) {
601 +                throw new UnsupportedOperationException();
602 +            }
603 +            public <U> CompletableFuture<U> supplyAsync(Supplier<U> a) {
604 +                throw new UnsupportedOperationException();
605 +            }
606 +            public <T> CompletableFuture<Void> thenRun
607 +                (CompletableFuture<T> f, Runnable a) {
608 +                return f.thenRun(a);
609 +            }
610 +            public <T> CompletableFuture<Void> thenAccept
611 +                (CompletableFuture<T> f, Consumer<? super T> a) {
612 +                return f.thenAccept(a);
613 +            }
614 +            public <T,U> CompletableFuture<U> thenApply
615 +                (CompletableFuture<T> f, Function<? super T,U> a) {
616 +                return f.thenApply(a);
617 +            }
618 +            public <T,U> CompletableFuture<U> thenCompose
619 +                (CompletableFuture<T> f,
620 +                 Function<? super T,? extends CompletionStage<U>> a) {
621 +                return f.thenCompose(a);
622 +            }
623 +            public <T,U> CompletableFuture<U> handle
624 +                (CompletableFuture<T> f,
625 +                 BiFunction<? super T,Throwable,? extends U> a) {
626 +                return f.handle(a);
627 +            }
628 +            public <T> CompletableFuture<T> whenComplete
629 +                (CompletableFuture<T> f,
630 +                 BiConsumer<? super T,? super Throwable> a) {
631 +                return f.whenComplete(a);
632 +            }
633 +            public <T,U> CompletableFuture<Void> runAfterBoth
634 +                (CompletableFuture<T> f, CompletableFuture<U> g, Runnable a) {
635 +                return f.runAfterBoth(g, a);
636 +            }
637 +            public <T,U> CompletableFuture<Void> thenAcceptBoth
638 +                (CompletableFuture<T> f,
639 +                 CompletionStage<? extends U> g,
640 +                 BiConsumer<? super T,? super U> a) {
641 +                return f.thenAcceptBoth(g, a);
642 +            }
643 +            public <T,U,V> CompletableFuture<V> thenCombine
644 +                (CompletableFuture<T> f,
645 +                 CompletionStage<? extends U> g,
646 +                 BiFunction<? super T,? super U,? extends V> a) {
647 +                return f.thenCombine(g, a);
648 +            }
649 +            public <T> CompletableFuture<Void> runAfterEither
650 +                (CompletableFuture<T> f,
651 +                 CompletionStage<?> g,
652 +                 java.lang.Runnable a) {
653 +                return f.runAfterEither(g, a);
654 +            }
655 +            public <T> CompletableFuture<Void> acceptEither
656 +                (CompletableFuture<T> f,
657 +                 CompletionStage<? extends T> g,
658 +                 Consumer<? super T> a) {
659 +                return f.acceptEither(g, a);
660 +            }
661 +            public <T,U> CompletableFuture<U> applyToEither
662 +                (CompletableFuture<T> f,
663 +                 CompletionStage<? extends T> g,
664 +                 Function<? super T,U> a) {
665 +                return f.applyToEither(g, a);
666 +            }
667 +        },
668 +
669 +        ASYNC {
670 +            public void checkExecutionMode() {
671 +                assertEquals(defaultExecutorIsCommonPool,
672 +                             (ForkJoinPool.commonPool() == ForkJoinTask.getPool()));
673 +            }
674 +            public CompletableFuture<Void> runAsync(Runnable a) {
675 +                return CompletableFuture.runAsync(a);
676 +            }
677 +            public <U> CompletableFuture<U> supplyAsync(Supplier<U> a) {
678 +                return CompletableFuture.supplyAsync(a);
679 +            }
680 +            public <T> CompletableFuture<Void> thenRun
681 +                (CompletableFuture<T> f, Runnable a) {
682 +                return f.thenRunAsync(a);
683 +            }
684 +            public <T> CompletableFuture<Void> thenAccept
685 +                (CompletableFuture<T> f, Consumer<? super T> a) {
686 +                return f.thenAcceptAsync(a);
687 +            }
688 +            public <T,U> CompletableFuture<U> thenApply
689 +                (CompletableFuture<T> f, Function<? super T,U> a) {
690 +                return f.thenApplyAsync(a);
691 +            }
692 +            public <T,U> CompletableFuture<U> thenCompose
693 +                (CompletableFuture<T> f,
694 +                 Function<? super T,? extends CompletionStage<U>> a) {
695 +                return f.thenComposeAsync(a);
696 +            }
697 +            public <T,U> CompletableFuture<U> handle
698 +                (CompletableFuture<T> f,
699 +                 BiFunction<? super T,Throwable,? extends U> a) {
700 +                return f.handleAsync(a);
701 +            }
702 +            public <T> CompletableFuture<T> whenComplete
703 +                (CompletableFuture<T> f,
704 +                 BiConsumer<? super T,? super Throwable> a) {
705 +                return f.whenCompleteAsync(a);
706 +            }
707 +            public <T,U> CompletableFuture<Void> runAfterBoth
708 +                (CompletableFuture<T> f, CompletableFuture<U> g, Runnable a) {
709 +                return f.runAfterBothAsync(g, a);
710 +            }
711 +            public <T,U> CompletableFuture<Void> thenAcceptBoth
712 +                (CompletableFuture<T> f,
713 +                 CompletionStage<? extends U> g,
714 +                 BiConsumer<? super T,? super U> a) {
715 +                return f.thenAcceptBothAsync(g, a);
716 +            }
717 +            public <T,U,V> CompletableFuture<V> thenCombine
718 +                (CompletableFuture<T> f,
719 +                 CompletionStage<? extends U> g,
720 +                 BiFunction<? super T,? super U,? extends V> a) {
721 +                return f.thenCombineAsync(g, a);
722 +            }
723 +            public <T> CompletableFuture<Void> runAfterEither
724 +                (CompletableFuture<T> f,
725 +                 CompletionStage<?> g,
726 +                 java.lang.Runnable a) {
727 +                return f.runAfterEitherAsync(g, a);
728 +            }
729 +            public <T> CompletableFuture<Void> acceptEither
730 +                (CompletableFuture<T> f,
731 +                 CompletionStage<? extends T> g,
732 +                 Consumer<? super T> a) {
733 +                return f.acceptEitherAsync(g, a);
734 +            }
735 +            public <T,U> CompletableFuture<U> applyToEither
736 +                (CompletableFuture<T> f,
737 +                 CompletionStage<? extends T> g,
738 +                 Function<? super T,U> a) {
739 +                return f.applyToEitherAsync(g, a);
740 +            }
741 +        },
742 +
743 +        EXECUTOR {
744 +            public void checkExecutionMode() {
745 +                assertTrue(ThreadExecutor.startedCurrentThread());
746 +            }
747 +            public CompletableFuture<Void> runAsync(Runnable a) {
748 +                return CompletableFuture.runAsync(a, new ThreadExecutor());
749 +            }
750 +            public <U> CompletableFuture<U> supplyAsync(Supplier<U> a) {
751 +                return CompletableFuture.supplyAsync(a, new ThreadExecutor());
752 +            }
753 +            public <T> CompletableFuture<Void> thenRun
754 +                (CompletableFuture<T> f, Runnable a) {
755 +                return f.thenRunAsync(a, new ThreadExecutor());
756 +            }
757 +            public <T> CompletableFuture<Void> thenAccept
758 +                (CompletableFuture<T> f, Consumer<? super T> a) {
759 +                return f.thenAcceptAsync(a, new ThreadExecutor());
760 +            }
761 +            public <T,U> CompletableFuture<U> thenApply
762 +                (CompletableFuture<T> f, Function<? super T,U> a) {
763 +                return f.thenApplyAsync(a, new ThreadExecutor());
764 +            }
765 +            public <T,U> CompletableFuture<U> thenCompose
766 +                (CompletableFuture<T> f,
767 +                 Function<? super T,? extends CompletionStage<U>> a) {
768 +                return f.thenComposeAsync(a, new ThreadExecutor());
769 +            }
770 +            public <T,U> CompletableFuture<U> handle
771 +                (CompletableFuture<T> f,
772 +                 BiFunction<? super T,Throwable,? extends U> a) {
773 +                return f.handleAsync(a, new ThreadExecutor());
774 +            }
775 +            public <T> CompletableFuture<T> whenComplete
776 +                (CompletableFuture<T> f,
777 +                 BiConsumer<? super T,? super Throwable> a) {
778 +                return f.whenCompleteAsync(a, new ThreadExecutor());
779 +            }
780 +            public <T,U> CompletableFuture<Void> runAfterBoth
781 +                (CompletableFuture<T> f, CompletableFuture<U> g, Runnable a) {
782 +                return f.runAfterBothAsync(g, a, new ThreadExecutor());
783 +            }
784 +            public <T,U> CompletableFuture<Void> thenAcceptBoth
785 +                (CompletableFuture<T> f,
786 +                 CompletionStage<? extends U> g,
787 +                 BiConsumer<? super T,? super U> a) {
788 +                return f.thenAcceptBothAsync(g, a, new ThreadExecutor());
789 +            }
790 +            public <T,U,V> CompletableFuture<V> thenCombine
791 +                (CompletableFuture<T> f,
792 +                 CompletionStage<? extends U> g,
793 +                 BiFunction<? super T,? super U,? extends V> a) {
794 +                return f.thenCombineAsync(g, a, new ThreadExecutor());
795 +            }
796 +            public <T> CompletableFuture<Void> runAfterEither
797 +                (CompletableFuture<T> f,
798 +                 CompletionStage<?> g,
799 +                 java.lang.Runnable a) {
800 +                return f.runAfterEitherAsync(g, a, new ThreadExecutor());
801 +            }
802 +            public <T> CompletableFuture<Void> acceptEither
803 +                (CompletableFuture<T> f,
804 +                 CompletionStage<? extends T> g,
805 +                 Consumer<? super T> a) {
806 +                return f.acceptEitherAsync(g, a, new ThreadExecutor());
807 +            }
808 +            public <T,U> CompletableFuture<U> applyToEither
809 +                (CompletableFuture<T> f,
810 +                 CompletionStage<? extends T> g,
811 +                 Function<? super T,U> a) {
812 +                return f.applyToEitherAsync(g, a, new ThreadExecutor());
813 +            }
814 +        };
815 +
816 +        public abstract void checkExecutionMode();
817 +        public abstract CompletableFuture<Void> runAsync(Runnable a);
818 +        public abstract <U> CompletableFuture<U> supplyAsync(Supplier<U> a);
819 +        public abstract <T> CompletableFuture<Void> thenRun
820 +            (CompletableFuture<T> f, Runnable a);
821 +        public abstract <T> CompletableFuture<Void> thenAccept
822 +            (CompletableFuture<T> f, Consumer<? super T> a);
823 +        public abstract <T,U> CompletableFuture<U> thenApply
824 +            (CompletableFuture<T> f, Function<? super T,U> a);
825 +        public abstract <T,U> CompletableFuture<U> thenCompose
826 +            (CompletableFuture<T> f,
827 +             Function<? super T,? extends CompletionStage<U>> a);
828 +        public abstract <T,U> CompletableFuture<U> handle
829 +            (CompletableFuture<T> f,
830 +             BiFunction<? super T,Throwable,? extends U> a);
831 +        public abstract <T> CompletableFuture<T> whenComplete
832 +            (CompletableFuture<T> f,
833 +             BiConsumer<? super T,? super Throwable> a);
834 +        public abstract <T,U> CompletableFuture<Void> runAfterBoth
835 +            (CompletableFuture<T> f, CompletableFuture<U> g, Runnable a);
836 +        public abstract <T,U> CompletableFuture<Void> thenAcceptBoth
837 +            (CompletableFuture<T> f,
838 +             CompletionStage<? extends U> g,
839 +             BiConsumer<? super T,? super U> a);
840 +        public abstract <T,U,V> CompletableFuture<V> thenCombine
841 +            (CompletableFuture<T> f,
842 +             CompletionStage<? extends U> g,
843 +             BiFunction<? super T,? super U,? extends V> a);
844 +        public abstract <T> CompletableFuture<Void> runAfterEither
845 +            (CompletableFuture<T> f,
846 +             CompletionStage<?> g,
847 +             java.lang.Runnable a);
848 +        public abstract <T> CompletableFuture<Void> acceptEither
849 +            (CompletableFuture<T> f,
850 +             CompletionStage<? extends T> g,
851 +             Consumer<? super T> a);
852 +        public abstract <T,U> CompletableFuture<U> applyToEither
853 +            (CompletableFuture<T> f,
854 +             CompletionStage<? extends T> g,
855 +             Function<? super T,U> a);
856 +    }
857 +
858 +    /**
859 +     * exceptionally action is not invoked when source completes
860 +     * normally, and source result is propagated
861 +     */
862 +    public void testExceptionally_normalCompletion() {
863 +        for (boolean createIncomplete : new boolean[] { true, false })
864 +        for (Integer v1 : new Integer[] { 1, null })
865 +    {
866 +        final AtomicInteger a = new AtomicInteger(0);
867 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
868 +        if (!createIncomplete) assertTrue(f.complete(v1));
869 +        final CompletableFuture<Integer> g = f.exceptionally
870 +            ((Throwable t) -> {
871 +                // Should not be called
872 +                a.getAndIncrement();
873 +                throw new AssertionError();
874 +            });
875 +        if (createIncomplete) assertTrue(f.complete(v1));
876 +
877 +        checkCompletedNormally(g, v1);
878 +        checkCompletedNormally(f, v1);
879 +        assertEquals(0, a.get());
880 +    }}
881 +
882 +    /**
883 +     * exceptionally action completes with function value on source
884 +     * exception
885 +     */
886 +    public void testExceptionally_exceptionalCompletion() {
887 +        for (boolean createIncomplete : new boolean[] { true, false })
888 +        for (Integer v1 : new Integer[] { 1, null })
889 +    {
890 +        final AtomicInteger a = new AtomicInteger(0);
891 +        final CFException ex = new CFException();
892 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
893 +        if (!createIncomplete) f.completeExceptionally(ex);
894 +        final CompletableFuture<Integer> g = f.exceptionally
895 +            ((Throwable t) -> {
896 +                ExecutionMode.SYNC.checkExecutionMode();
897 +                threadAssertSame(t, ex);
898 +                a.getAndIncrement();
899 +                return v1;
900 +            });
901 +        if (createIncomplete) f.completeExceptionally(ex);
902 +
903 +        checkCompletedNormally(g, v1);
904 +        assertEquals(1, a.get());
905 +    }}
906 +
907 +    public void testExceptionally_exceptionalCompletionActionFailed() {
908 +        for (boolean createIncomplete : new boolean[] { true, false })
909 +        for (Integer v1 : new Integer[] { 1, null })
910 +    {
911 +        final AtomicInteger a = new AtomicInteger(0);
912 +        final CFException ex1 = new CFException();
913 +        final CFException ex2 = new CFException();
914 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
915 +        if (!createIncomplete) f.completeExceptionally(ex1);
916 +        final CompletableFuture<Integer> g = f.exceptionally
917 +            ((Throwable t) -> {
918 +                ExecutionMode.SYNC.checkExecutionMode();
919 +                threadAssertSame(t, ex1);
920 +                a.getAndIncrement();
921 +                throw ex2;
922 +            });
923 +        if (createIncomplete) f.completeExceptionally(ex1);
924 +
925 +        checkCompletedWithWrappedException(g, ex2);
926 +        assertEquals(1, a.get());
927 +    }}
928 +
929 +    /**
930 +     * whenComplete action executes on normal completion, propagating
931 +     * source result.
932 +     */
933 +    public void testWhenComplete_normalCompletion1() {
934 +        for (ExecutionMode m : ExecutionMode.values())
935 +        for (boolean createIncomplete : new boolean[] { true, false })
936 +        for (Integer v1 : new Integer[] { 1, null })
937 +    {
938 +        final AtomicInteger a = new AtomicInteger(0);
939 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
940 +        if (!createIncomplete) assertTrue(f.complete(v1));
941 +        final CompletableFuture<Integer> g = m.whenComplete
942 +            (f,
943 +             (Integer x, Throwable t) -> {
944 +                m.checkExecutionMode();
945 +                threadAssertSame(x, v1);
946 +                threadAssertNull(t);
947 +                a.getAndIncrement();
948 +            });
949 +        if (createIncomplete) assertTrue(f.complete(v1));
950 +
951 +        checkCompletedNormally(g, v1);
952 +        checkCompletedNormally(f, v1);
953 +        assertEquals(1, a.get());
954 +    }}
955 +
956 +    /**
957 +     * whenComplete action executes on exceptional completion, propagating
958 +     * source result.
959 +     */
960 +    public void testWhenComplete_exceptionalCompletion() {
961 +        for (ExecutionMode m : ExecutionMode.values())
962 +        for (boolean createIncomplete : new boolean[] { true, false })
963 +        for (Integer v1 : new Integer[] { 1, null })
964 +    {
965 +        final AtomicInteger a = new AtomicInteger(0);
966 +        final CFException ex = new CFException();
967 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
968 +        if (!createIncomplete) f.completeExceptionally(ex);
969 +        final CompletableFuture<Integer> g = m.whenComplete
970 +            (f,
971 +             (Integer x, Throwable t) -> {
972 +                m.checkExecutionMode();
973 +                threadAssertNull(x);
974 +                threadAssertSame(t, ex);
975 +                a.getAndIncrement();
976 +            });
977 +        if (createIncomplete) f.completeExceptionally(ex);
978 +
979 +        checkCompletedWithWrappedException(g, ex);
980 +        checkCompletedExceptionally(f, ex);
981 +        assertEquals(1, a.get());
982 +    }}
983 +
984 +    /**
985 +     * whenComplete action executes on cancelled source, propagating
986 +     * CancellationException.
987 +     */
988 +    public void testWhenComplete_sourceCancelled() {
989 +        for (ExecutionMode m : ExecutionMode.values())
990 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
991 +        for (boolean createIncomplete : new boolean[] { true, false })
992 +    {
993 +        final AtomicInteger a = new AtomicInteger(0);
994 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
995 +        if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
996 +        final CompletableFuture<Integer> g = m.whenComplete
997 +            (f,
998 +             (Integer x, Throwable t) -> {
999 +                m.checkExecutionMode();
1000 +                threadAssertNull(x);
1001 +                threadAssertTrue(t instanceof CancellationException);
1002 +                a.getAndIncrement();
1003 +            });
1004 +        if (createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
1005 +
1006 +        checkCompletedWithWrappedCancellationException(g);
1007 +        checkCancelled(f);
1008 +        assertEquals(1, a.get());
1009 +    }}
1010 +
1011 +    /**
1012 +     * If a whenComplete action throws an exception when triggered by
1013 +     * a normal completion, it completes exceptionally
1014 +     */
1015 +    public void testWhenComplete_actionFailed() {
1016 +        for (boolean createIncomplete : new boolean[] { true, false })
1017 +        for (ExecutionMode m : ExecutionMode.values())
1018 +        for (Integer v1 : new Integer[] { 1, null })
1019 +    {
1020 +        final AtomicInteger a = new AtomicInteger(0);
1021 +        final CFException ex = new CFException();
1022 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1023 +        if (!createIncomplete) assertTrue(f.complete(v1));
1024 +        final CompletableFuture<Integer> g = m.whenComplete
1025 +            (f,
1026 +             (Integer x, Throwable t) -> {
1027 +                m.checkExecutionMode();
1028 +                threadAssertSame(x, v1);
1029 +                threadAssertNull(t);
1030 +                a.getAndIncrement();
1031 +                throw ex;
1032 +            });
1033 +        if (createIncomplete) assertTrue(f.complete(v1));
1034 +
1035 +        checkCompletedWithWrappedException(g, ex);
1036 +        checkCompletedNormally(f, v1);
1037 +        assertEquals(1, a.get());
1038 +    }}
1039 +
1040 +    /**
1041 +     * If a whenComplete action throws an exception when triggered by
1042 +     * a source completion that also throws an exception, the source
1043 +     * exception takes precedence.
1044 +     */
1045 +    public void testWhenComplete_actionFailedSourceFailed() {
1046 +        for (boolean createIncomplete : new boolean[] { true, false })
1047 +        for (ExecutionMode m : ExecutionMode.values())
1048 +        for (Integer v1 : new Integer[] { 1, null })
1049 +    {
1050 +        final AtomicInteger a = new AtomicInteger(0);
1051 +        final CFException ex1 = new CFException();
1052 +        final CFException ex2 = new CFException();
1053 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1054 +
1055 +        if (!createIncomplete) f.completeExceptionally(ex1);
1056 +        final CompletableFuture<Integer> g = m.whenComplete
1057 +            (f,
1058 +             (Integer x, Throwable t) -> {
1059 +                m.checkExecutionMode();
1060 +                threadAssertSame(t, ex1);
1061 +                threadAssertNull(x);
1062 +                a.getAndIncrement();
1063 +                throw ex2;
1064 +            });
1065 +        if (createIncomplete) f.completeExceptionally(ex1);
1066 +
1067 +        checkCompletedWithWrappedException(g, ex1);
1068 +        checkCompletedExceptionally(f, ex1);
1069 +        assertEquals(1, a.get());
1070 +    }}
1071 +
1072 +    /**
1073 +     * handle action completes normally with function value on normal
1074 +     * completion of source
1075 +     */
1076 +    public void testHandle_normalCompletion() {
1077 +        for (ExecutionMode m : ExecutionMode.values())
1078 +        for (boolean createIncomplete : new boolean[] { true, false })
1079 +        for (Integer v1 : new Integer[] { 1, null })
1080 +    {
1081 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1082 +        final AtomicInteger a = new AtomicInteger(0);
1083 +        if (!createIncomplete) assertTrue(f.complete(v1));
1084 +        final CompletableFuture<Integer> g = m.handle
1085 +            (f,
1086 +             (Integer x, Throwable t) -> {
1087 +                m.checkExecutionMode();
1088 +                threadAssertSame(x, v1);
1089 +                threadAssertNull(t);
1090 +                a.getAndIncrement();
1091 +                return inc(v1);
1092 +            });
1093 +        if (createIncomplete) assertTrue(f.complete(v1));
1094 +
1095 +        checkCompletedNormally(g, inc(v1));
1096 +        checkCompletedNormally(f, v1);
1097 +        assertEquals(1, a.get());
1098 +    }}
1099 +
1100 +    /**
1101 +     * handle action completes normally with function value on
1102 +     * exceptional completion of source
1103 +     */
1104 +    public void testHandle_exceptionalCompletion() {
1105 +        for (ExecutionMode m : ExecutionMode.values())
1106 +        for (boolean createIncomplete : new boolean[] { true, false })
1107 +        for (Integer v1 : new Integer[] { 1, null })
1108 +    {
1109 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1110 +        final AtomicInteger a = new AtomicInteger(0);
1111 +        final CFException ex = new CFException();
1112 +        if (!createIncomplete) f.completeExceptionally(ex);
1113 +        final CompletableFuture<Integer> g = m.handle
1114 +            (f,
1115 +             (Integer x, Throwable t) -> {
1116 +                m.checkExecutionMode();
1117 +                threadAssertNull(x);
1118 +                threadAssertSame(t, ex);
1119 +                a.getAndIncrement();
1120 +                return v1;
1121 +            });
1122 +        if (createIncomplete) f.completeExceptionally(ex);
1123 +
1124 +        checkCompletedNormally(g, v1);
1125 +        checkCompletedExceptionally(f, ex);
1126 +        assertEquals(1, a.get());
1127 +    }}
1128 +
1129 +    /**
1130 +     * handle action completes normally with function value on
1131 +     * cancelled source
1132 +     */
1133 +    public void testHandle_sourceCancelled() {
1134 +        for (ExecutionMode m : ExecutionMode.values())
1135 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1136 +        for (boolean createIncomplete : new boolean[] { true, false })
1137 +        for (Integer v1 : new Integer[] { 1, null })
1138 +    {
1139 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1140 +        final AtomicInteger a = new AtomicInteger(0);
1141 +        if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
1142 +        final CompletableFuture<Integer> g = m.handle
1143 +            (f,
1144 +             (Integer x, Throwable t) -> {
1145 +                m.checkExecutionMode();
1146 +                threadAssertNull(x);
1147 +                threadAssertTrue(t instanceof CancellationException);
1148 +                a.getAndIncrement();
1149 +                return v1;
1150 +            });
1151 +        if (createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
1152 +
1153 +        checkCompletedNormally(g, v1);
1154 +        checkCancelled(f);
1155 +        assertEquals(1, a.get());
1156 +    }}
1157 +
1158 +    /**
1159 +     * handle result completes exceptionally if action does
1160 +     */
1161 +    public void testHandle_sourceFailedActionFailed() {
1162 +        for (ExecutionMode m : ExecutionMode.values())
1163 +        for (boolean createIncomplete : new boolean[] { true, false })
1164 +    {
1165 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1166 +        final AtomicInteger a = new AtomicInteger(0);
1167 +        final CFException ex1 = new CFException();
1168 +        final CFException ex2 = new CFException();
1169 +        if (!createIncomplete) f.completeExceptionally(ex1);
1170 +        final CompletableFuture<Integer> g = m.handle
1171 +            (f,
1172 +             (Integer x, Throwable t) -> {
1173 +                m.checkExecutionMode();
1174 +                threadAssertNull(x);
1175 +                threadAssertSame(ex1, t);
1176 +                a.getAndIncrement();
1177 +                throw ex2;
1178 +            });
1179 +        if (createIncomplete) f.completeExceptionally(ex1);
1180 +
1181 +        checkCompletedWithWrappedException(g, ex2);
1182 +        checkCompletedExceptionally(f, ex1);
1183 +        assertEquals(1, a.get());
1184 +    }}
1185 +
1186 +    public void testHandle_sourceCompletedNormallyActionFailed() {
1187 +        for (ExecutionMode m : ExecutionMode.values())
1188 +        for (boolean createIncomplete : new boolean[] { true, false })
1189 +        for (Integer v1 : new Integer[] { 1, null })
1190 +    {
1191 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1192 +        final AtomicInteger a = new AtomicInteger(0);
1193 +        final CFException ex = new CFException();
1194 +        if (!createIncomplete) assertTrue(f.complete(v1));
1195 +        final CompletableFuture<Integer> g = m.handle
1196 +            (f,
1197 +             (Integer x, Throwable t) -> {
1198 +                m.checkExecutionMode();
1199 +                threadAssertSame(x, v1);
1200 +                threadAssertNull(t);
1201 +                a.getAndIncrement();
1202 +                throw ex;
1203 +            });
1204 +        if (createIncomplete) assertTrue(f.complete(v1));
1205 +
1206 +        checkCompletedWithWrappedException(g, ex);
1207 +        checkCompletedNormally(f, v1);
1208 +        assertEquals(1, a.get());
1209 +    }}
1210 +
1211 +    /**
1212 +     * runAsync completes after running Runnable
1213 +     */
1214 +    public void testRunAsync_normalCompletion() {
1215 +        ExecutionMode[] executionModes = {
1216 +            ExecutionMode.ASYNC,
1217 +            ExecutionMode.EXECUTOR,
1218 +        };
1219 +        for (ExecutionMode m : executionModes)
1220 +    {
1221 +        final Noop r = new Noop(m);
1222 +        final CompletableFuture<Void> f = m.runAsync(r);
1223 +        assertNull(f.join());
1224 +        checkCompletedNormally(f, null);
1225 +        r.assertInvoked();
1226 +    }}
1227 +
1228 +    /**
1229 +     * failing runAsync completes exceptionally after running Runnable
1230 +     */
1231 +    public void testRunAsync_exceptionalCompletion() {
1232 +        ExecutionMode[] executionModes = {
1233 +            ExecutionMode.ASYNC,
1234 +            ExecutionMode.EXECUTOR,
1235 +        };
1236 +        for (ExecutionMode m : executionModes)
1237 +    {
1238 +        final FailingRunnable r = new FailingRunnable(m);
1239 +        final CompletableFuture<Void> f = m.runAsync(r);
1240 +        checkCompletedWithWrappedCFException(f);
1241 +        r.assertInvoked();
1242 +    }}
1243 +
1244 +    /**
1245 +     * supplyAsync completes with result of supplier
1246 +     */
1247 +    public void testSupplyAsync_normalCompletion() {
1248 +        ExecutionMode[] executionModes = {
1249 +            ExecutionMode.ASYNC,
1250 +            ExecutionMode.EXECUTOR,
1251 +        };
1252 +        for (ExecutionMode m : executionModes)
1253 +        for (Integer v1 : new Integer[] { 1, null })
1254 +    {
1255 +        final IntegerSupplier r = new IntegerSupplier(m, v1);
1256 +        final CompletableFuture<Integer> f = m.supplyAsync(r);
1257 +        assertSame(v1, f.join());
1258 +        checkCompletedNormally(f, v1);
1259 +        r.assertInvoked();
1260 +    }}
1261 +
1262 +    /**
1263 +     * Failing supplyAsync completes exceptionally
1264 +     */
1265 +    public void testSupplyAsync_exceptionalCompletion() {
1266 +        ExecutionMode[] executionModes = {
1267 +            ExecutionMode.ASYNC,
1268 +            ExecutionMode.EXECUTOR,
1269 +        };
1270 +        for (ExecutionMode m : executionModes)
1271 +    {
1272 +        FailingSupplier r = new FailingSupplier(m);
1273 +        CompletableFuture<Integer> f = m.supplyAsync(r);
1274 +        checkCompletedWithWrappedCFException(f);
1275 +        r.assertInvoked();
1276 +    }}
1277 +
1278 +    // seq completion methods
1279 +
1280 +    /**
1281 +     * thenRun result completes normally after normal completion of source
1282 +     */
1283 +    public void testThenRun_normalCompletion() {
1284 +        for (ExecutionMode m : ExecutionMode.values())
1285 +        for (Integer v1 : new Integer[] { 1, null })
1286 +    {
1287 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1288 +        final Noop[] rs = new Noop[6];
1289 +        for (int i = 0; i < rs.length; i++) rs[i] = new Noop(m);
1290 +
1291 +        final CompletableFuture<Void> h0 = m.thenRun(f, rs[0]);
1292 +        final CompletableFuture<Void> h1 = m.runAfterBoth(f, f, rs[1]);
1293 +        final CompletableFuture<Void> h2 = m.runAfterEither(f, f, rs[2]);
1294 +        checkIncomplete(h0);
1295 +        checkIncomplete(h1);
1296 +        checkIncomplete(h2);
1297 +        assertTrue(f.complete(v1));
1298 +        final CompletableFuture<Void> h3 = m.thenRun(f, rs[3]);
1299 +        final CompletableFuture<Void> h4 = m.runAfterBoth(f, f, rs[4]);
1300 +        final CompletableFuture<Void> h5 = m.runAfterEither(f, f, rs[5]);
1301 +
1302 +        checkCompletedNormally(h0, null);
1303 +        checkCompletedNormally(h1, null);
1304 +        checkCompletedNormally(h2, null);
1305 +        checkCompletedNormally(h3, null);
1306 +        checkCompletedNormally(h4, null);
1307 +        checkCompletedNormally(h5, null);
1308 +        checkCompletedNormally(f, v1);
1309 +        for (Noop r : rs) r.assertInvoked();
1310 +    }}
1311 +
1312 +    /**
1313 +     * thenRun result completes exceptionally after exceptional
1314 +     * completion of source
1315 +     */
1316 +    public void testThenRun_exceptionalCompletion() {
1317 +        for (ExecutionMode m : ExecutionMode.values())
1318 +    {
1319 +        final CFException ex = new CFException();
1320 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1321 +        final Noop[] rs = new Noop[6];
1322 +        for (int i = 0; i < rs.length; i++) rs[i] = new Noop(m);
1323 +
1324 +        final CompletableFuture<Void> h0 = m.thenRun(f, rs[0]);
1325 +        final CompletableFuture<Void> h1 = m.runAfterBoth(f, f, rs[1]);
1326 +        final CompletableFuture<Void> h2 = m.runAfterEither(f, f, rs[2]);
1327 +        checkIncomplete(h0);
1328 +        checkIncomplete(h1);
1329 +        checkIncomplete(h2);
1330 +        assertTrue(f.completeExceptionally(ex));
1331 +        final CompletableFuture<Void> h3 = m.thenRun(f, rs[3]);
1332 +        final CompletableFuture<Void> h4 = m.runAfterBoth(f, f, rs[4]);
1333 +        final CompletableFuture<Void> h5 = m.runAfterEither(f, f, rs[5]);
1334 +
1335 +        checkCompletedWithWrappedException(h0, ex);
1336 +        checkCompletedWithWrappedException(h1, ex);
1337 +        checkCompletedWithWrappedException(h2, ex);
1338 +        checkCompletedWithWrappedException(h3, ex);
1339 +        checkCompletedWithWrappedException(h4, ex);
1340 +        checkCompletedWithWrappedException(h5, ex);
1341 +        checkCompletedExceptionally(f, ex);
1342 +        for (Noop r : rs) r.assertNotInvoked();
1343 +    }}
1344 +
1345 +    /**
1346 +     * thenRun result completes exceptionally if source cancelled
1347 +     */
1348 +    public void testThenRun_sourceCancelled() {
1349 +        for (ExecutionMode m : ExecutionMode.values())
1350 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1351 +    {
1352 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1353 +        final Noop[] rs = new Noop[6];
1354 +        for (int i = 0; i < rs.length; i++) rs[i] = new Noop(m);
1355 +
1356 +        final CompletableFuture<Void> h0 = m.thenRun(f, rs[0]);
1357 +        final CompletableFuture<Void> h1 = m.runAfterBoth(f, f, rs[1]);
1358 +        final CompletableFuture<Void> h2 = m.runAfterEither(f, f, rs[2]);
1359 +        checkIncomplete(h0);
1360 +        checkIncomplete(h1);
1361 +        checkIncomplete(h2);
1362 +        assertTrue(f.cancel(mayInterruptIfRunning));
1363 +        final CompletableFuture<Void> h3 = m.thenRun(f, rs[3]);
1364 +        final CompletableFuture<Void> h4 = m.runAfterBoth(f, f, rs[4]);
1365 +        final CompletableFuture<Void> h5 = m.runAfterEither(f, f, rs[5]);
1366 +
1367 +        checkCompletedWithWrappedCancellationException(h0);
1368 +        checkCompletedWithWrappedCancellationException(h1);
1369 +        checkCompletedWithWrappedCancellationException(h2);
1370 +        checkCompletedWithWrappedCancellationException(h3);
1371 +        checkCompletedWithWrappedCancellationException(h4);
1372 +        checkCompletedWithWrappedCancellationException(h5);
1373 +        checkCancelled(f);
1374 +        for (Noop r : rs) r.assertNotInvoked();
1375 +    }}
1376 +
1377 +    /**
1378 +     * thenRun result completes exceptionally if action does
1379 +     */
1380 +    public void testThenRun_actionFailed() {
1381 +        for (ExecutionMode m : ExecutionMode.values())
1382 +        for (Integer v1 : new Integer[] { 1, null })
1383 +    {
1384 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1385 +        final FailingRunnable[] rs = new FailingRunnable[6];
1386 +        for (int i = 0; i < rs.length; i++) rs[i] = new FailingRunnable(m);
1387 +
1388 +        final CompletableFuture<Void> h0 = m.thenRun(f, rs[0]);
1389 +        final CompletableFuture<Void> h1 = m.runAfterBoth(f, f, rs[1]);
1390 +        final CompletableFuture<Void> h2 = m.runAfterEither(f, f, rs[2]);
1391 +        assertTrue(f.complete(v1));
1392 +        final CompletableFuture<Void> h3 = m.thenRun(f, rs[3]);
1393 +        final CompletableFuture<Void> h4 = m.runAfterBoth(f, f, rs[4]);
1394 +        final CompletableFuture<Void> h5 = m.runAfterEither(f, f, rs[5]);
1395 +
1396 +        checkCompletedWithWrappedCFException(h0);
1397 +        checkCompletedWithWrappedCFException(h1);
1398 +        checkCompletedWithWrappedCFException(h2);
1399 +        checkCompletedWithWrappedCFException(h3);
1400 +        checkCompletedWithWrappedCFException(h4);
1401 +        checkCompletedWithWrappedCFException(h5);
1402 +        checkCompletedNormally(f, v1);
1403 +    }}
1404 +
1405 +    /**
1406 +     * thenApply result completes normally after normal completion of source
1407 +     */
1408 +    public void testThenApply_normalCompletion() {
1409 +        for (ExecutionMode m : ExecutionMode.values())
1410 +        for (Integer v1 : new Integer[] { 1, null })
1411 +    {
1412 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1413 +        final IncFunction[] rs = new IncFunction[4];
1414 +        for (int i = 0; i < rs.length; i++) rs[i] = new IncFunction(m);
1415 +
1416 +        final CompletableFuture<Integer> h0 = m.thenApply(f, rs[0]);
1417 +        final CompletableFuture<Integer> h1 = m.applyToEither(f, f, rs[1]);
1418 +        checkIncomplete(h0);
1419 +        checkIncomplete(h1);
1420 +        assertTrue(f.complete(v1));
1421 +        final CompletableFuture<Integer> h2 = m.thenApply(f, rs[2]);
1422 +        final CompletableFuture<Integer> h3 = m.applyToEither(f, f, rs[3]);
1423 +
1424 +        checkCompletedNormally(h0, inc(v1));
1425 +        checkCompletedNormally(h1, inc(v1));
1426 +        checkCompletedNormally(h2, inc(v1));
1427 +        checkCompletedNormally(h3, inc(v1));
1428 +        checkCompletedNormally(f, v1);
1429 +        for (IncFunction r : rs) r.assertValue(inc(v1));
1430 +    }}
1431 +
1432 +    /**
1433 +     * thenApply result completes exceptionally after exceptional
1434 +     * completion of source
1435 +     */
1436 +    public void testThenApply_exceptionalCompletion() {
1437 +        for (ExecutionMode m : ExecutionMode.values())
1438 +    {
1439 +        final CFException ex = new CFException();
1440 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1441 +        final IncFunction[] rs = new IncFunction[4];
1442 +        for (int i = 0; i < rs.length; i++) rs[i] = new IncFunction(m);
1443 +
1444 +        final CompletableFuture<Integer> h0 = m.thenApply(f, rs[0]);
1445 +        final CompletableFuture<Integer> h1 = m.applyToEither(f, f, rs[1]);
1446 +        assertTrue(f.completeExceptionally(ex));
1447 +        final CompletableFuture<Integer> h2 = m.thenApply(f, rs[2]);
1448 +        final CompletableFuture<Integer> h3 = m.applyToEither(f, f, rs[3]);
1449 +
1450 +        checkCompletedWithWrappedException(h0, ex);
1451 +        checkCompletedWithWrappedException(h1, ex);
1452 +        checkCompletedWithWrappedException(h2, ex);
1453 +        checkCompletedWithWrappedException(h3, ex);
1454 +        checkCompletedExceptionally(f, ex);
1455 +        for (IncFunction r : rs) r.assertNotInvoked();
1456 +    }}
1457 +
1458 +    /**
1459 +     * thenApply result completes exceptionally if source cancelled
1460 +     */
1461 +    public void testThenApply_sourceCancelled() {
1462 +        for (ExecutionMode m : ExecutionMode.values())
1463 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1464 +    {
1465 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1466 +        final IncFunction[] rs = new IncFunction[4];
1467 +        for (int i = 0; i < rs.length; i++) rs[i] = new IncFunction(m);
1468 +
1469 +        final CompletableFuture<Integer> h0 = m.thenApply(f, rs[0]);
1470 +        final CompletableFuture<Integer> h1 = m.applyToEither(f, f, rs[1]);
1471 +        assertTrue(f.cancel(mayInterruptIfRunning));
1472 +        final CompletableFuture<Integer> h2 = m.thenApply(f, rs[2]);
1473 +        final CompletableFuture<Integer> h3 = m.applyToEither(f, f, rs[3]);
1474 +
1475 +        checkCompletedWithWrappedCancellationException(h0);
1476 +        checkCompletedWithWrappedCancellationException(h1);
1477 +        checkCompletedWithWrappedCancellationException(h2);
1478 +        checkCompletedWithWrappedCancellationException(h3);
1479 +        checkCancelled(f);
1480 +        for (IncFunction r : rs) r.assertNotInvoked();
1481 +    }}
1482 +
1483 +    /**
1484 +     * thenApply result completes exceptionally if action does
1485 +     */
1486 +    public void testThenApply_actionFailed() {
1487 +        for (ExecutionMode m : ExecutionMode.values())
1488 +        for (Integer v1 : new Integer[] { 1, null })
1489 +    {
1490 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1491 +        final FailingFunction[] rs = new FailingFunction[4];
1492 +        for (int i = 0; i < rs.length; i++) rs[i] = new FailingFunction(m);
1493 +
1494 +        final CompletableFuture<Integer> h0 = m.thenApply(f, rs[0]);
1495 +        final CompletableFuture<Integer> h1 = m.applyToEither(f, f, rs[1]);
1496 +        assertTrue(f.complete(v1));
1497 +        final CompletableFuture<Integer> h2 = m.thenApply(f, rs[2]);
1498 +        final CompletableFuture<Integer> h3 = m.applyToEither(f, f, rs[3]);
1499 +
1500 +        checkCompletedWithWrappedCFException(h0);
1501 +        checkCompletedWithWrappedCFException(h1);
1502 +        checkCompletedWithWrappedCFException(h2);
1503 +        checkCompletedWithWrappedCFException(h3);
1504 +        checkCompletedNormally(f, v1);
1505 +    }}
1506 +
1507 +    /**
1508 +     * thenAccept result completes normally after normal completion of source
1509 +     */
1510 +    public void testThenAccept_normalCompletion() {
1511 +        for (ExecutionMode m : ExecutionMode.values())
1512 +        for (Integer v1 : new Integer[] { 1, null })
1513 +    {
1514 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1515 +        final NoopConsumer[] rs = new NoopConsumer[4];
1516 +        for (int i = 0; i < rs.length; i++) rs[i] = new NoopConsumer(m);
1517 +
1518 +        final CompletableFuture<Void> h0 = m.thenAccept(f, rs[0]);
1519 +        final CompletableFuture<Void> h1 = m.acceptEither(f, f, rs[1]);
1520 +        checkIncomplete(h0);
1521 +        checkIncomplete(h1);
1522 +        assertTrue(f.complete(v1));
1523 +        final CompletableFuture<Void> h2 = m.thenAccept(f, rs[2]);
1524 +        final CompletableFuture<Void> h3 = m.acceptEither(f, f, rs[3]);
1525 +
1526 +        checkCompletedNormally(h0, null);
1527 +        checkCompletedNormally(h1, null);
1528 +        checkCompletedNormally(h2, null);
1529 +        checkCompletedNormally(h3, null);
1530 +        checkCompletedNormally(f, v1);
1531 +        for (NoopConsumer r : rs) r.assertValue(v1);
1532 +    }}
1533 +
1534 +    /**
1535 +     * thenAccept result completes exceptionally after exceptional
1536 +     * completion of source
1537 +     */
1538 +    public void testThenAccept_exceptionalCompletion() {
1539 +        for (ExecutionMode m : ExecutionMode.values())
1540 +    {
1541 +        final CFException ex = new CFException();
1542 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1543 +        final NoopConsumer[] rs = new NoopConsumer[4];
1544 +        for (int i = 0; i < rs.length; i++) rs[i] = new NoopConsumer(m);
1545 +
1546 +        final CompletableFuture<Void> h0 = m.thenAccept(f, rs[0]);
1547 +        final CompletableFuture<Void> h1 = m.acceptEither(f, f, rs[1]);
1548 +        assertTrue(f.completeExceptionally(ex));
1549 +        final CompletableFuture<Void> h2 = m.thenAccept(f, rs[2]);
1550 +        final CompletableFuture<Void> h3 = m.acceptEither(f, f, rs[3]);
1551 +
1552 +        checkCompletedWithWrappedException(h0, ex);
1553 +        checkCompletedWithWrappedException(h1, ex);
1554 +        checkCompletedWithWrappedException(h2, ex);
1555 +        checkCompletedWithWrappedException(h3, ex);
1556 +        checkCompletedExceptionally(f, ex);
1557 +        for (NoopConsumer r : rs) r.assertNotInvoked();
1558 +    }}
1559 +
1560 +    /**
1561 +     * thenAccept result completes exceptionally if source cancelled
1562 +     */
1563 +    public void testThenAccept_sourceCancelled() {
1564 +        for (ExecutionMode m : ExecutionMode.values())
1565 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1566 +    {
1567 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1568 +        final NoopConsumer[] rs = new NoopConsumer[4];
1569 +        for (int i = 0; i < rs.length; i++) rs[i] = new NoopConsumer(m);
1570 +
1571 +        final CompletableFuture<Void> h0 = m.thenAccept(f, rs[0]);
1572 +        final CompletableFuture<Void> h1 = m.acceptEither(f, f, rs[1]);
1573 +        assertTrue(f.cancel(mayInterruptIfRunning));
1574 +        final CompletableFuture<Void> h2 = m.thenAccept(f, rs[2]);
1575 +        final CompletableFuture<Void> h3 = m.acceptEither(f, f, rs[3]);
1576 +
1577 +        checkCompletedWithWrappedCancellationException(h0);
1578 +        checkCompletedWithWrappedCancellationException(h1);
1579 +        checkCompletedWithWrappedCancellationException(h2);
1580 +        checkCompletedWithWrappedCancellationException(h3);
1581 +        checkCancelled(f);
1582 +        for (NoopConsumer r : rs) r.assertNotInvoked();
1583 +    }}
1584 +
1585 +    /**
1586 +     * thenAccept result completes exceptionally if action does
1587 +     */
1588 +    public void testThenAccept_actionFailed() {
1589 +        for (ExecutionMode m : ExecutionMode.values())
1590 +        for (Integer v1 : new Integer[] { 1, null })
1591 +    {
1592 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1593 +        final FailingConsumer[] rs = new FailingConsumer[4];
1594 +        for (int i = 0; i < rs.length; i++) rs[i] = new FailingConsumer(m);
1595 +
1596 +        final CompletableFuture<Void> h0 = m.thenAccept(f, rs[0]);
1597 +        final CompletableFuture<Void> h1 = m.acceptEither(f, f, rs[1]);
1598 +        assertTrue(f.complete(v1));
1599 +        final CompletableFuture<Void> h2 = m.thenAccept(f, rs[2]);
1600 +        final CompletableFuture<Void> h3 = m.acceptEither(f, f, rs[3]);
1601 +
1602 +        checkCompletedWithWrappedCFException(h0);
1603 +        checkCompletedWithWrappedCFException(h1);
1604 +        checkCompletedWithWrappedCFException(h2);
1605 +        checkCompletedWithWrappedCFException(h3);
1606 +        checkCompletedNormally(f, v1);
1607 +    }}
1608 +
1609 +    /**
1610 +     * thenCombine result completes normally after normal completion
1611 +     * of sources
1612 +     */
1613 +    public void testThenCombine_normalCompletion() {
1614 +        for (ExecutionMode m : ExecutionMode.values())
1615 +        for (boolean fFirst : new boolean[] { true, false })
1616 +        for (Integer v1 : new Integer[] { 1, null })
1617 +        for (Integer v2 : new Integer[] { 2, null })
1618 +    {
1619 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1620 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1621 +        final SubtractFunction[] rs = new SubtractFunction[6];
1622 +        for (int i = 0; i < rs.length; i++) rs[i] = new SubtractFunction(m);
1623 +
1624 +        final CompletableFuture<Integer> fst =  fFirst ? f : g;
1625 +        final CompletableFuture<Integer> snd = !fFirst ? f : g;
1626 +        final Integer w1 =  fFirst ? v1 : v2;
1627 +        final Integer w2 = !fFirst ? v1 : v2;
1628 +
1629 +        final CompletableFuture<Integer> h0 = m.thenCombine(f, g, rs[0]);
1630 +        final CompletableFuture<Integer> h1 = m.thenCombine(fst, fst, rs[1]);
1631 +        assertTrue(fst.complete(w1));
1632 +        final CompletableFuture<Integer> h2 = m.thenCombine(f, g, rs[2]);
1633 +        final CompletableFuture<Integer> h3 = m.thenCombine(fst, fst, rs[3]);
1634 +        checkIncomplete(h0); rs[0].assertNotInvoked();
1635 +        checkIncomplete(h2); rs[2].assertNotInvoked();
1636 +        checkCompletedNormally(h1, subtract(w1, w1));
1637 +        checkCompletedNormally(h3, subtract(w1, w1));
1638 +        rs[1].assertValue(subtract(w1, w1));
1639 +        rs[3].assertValue(subtract(w1, w1));
1640 +        assertTrue(snd.complete(w2));
1641 +        final CompletableFuture<Integer> h4 = m.thenCombine(f, g, rs[4]);
1642 +
1643 +        checkCompletedNormally(h0, subtract(v1, v2));
1644 +        checkCompletedNormally(h2, subtract(v1, v2));
1645 +        checkCompletedNormally(h4, subtract(v1, v2));
1646 +        rs[0].assertValue(subtract(v1, v2));
1647 +        rs[2].assertValue(subtract(v1, v2));
1648 +        rs[4].assertValue(subtract(v1, v2));
1649 +
1650 +        checkCompletedNormally(f, v1);
1651 +        checkCompletedNormally(g, v2);
1652 +    }}
1653 +
1654 +    /**
1655 +     * thenCombine result completes exceptionally after exceptional
1656 +     * completion of either source
1657 +     */
1658 +    public void testThenCombine_exceptionalCompletion() throws Throwable {
1659 +        for (ExecutionMode m : ExecutionMode.values())
1660 +        for (boolean fFirst : new boolean[] { true, false })
1661 +        for (boolean failFirst : new boolean[] { true, false })
1662 +        for (Integer v1 : new Integer[] { 1, null })
1663 +    {
1664 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1665 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1666 +        final CFException ex = new CFException();
1667 +        final SubtractFunction r1 = new SubtractFunction(m);
1668 +        final SubtractFunction r2 = new SubtractFunction(m);
1669 +        final SubtractFunction r3 = new SubtractFunction(m);
1670 +
1671 +        final CompletableFuture<Integer> fst =  fFirst ? f : g;
1672 +        final CompletableFuture<Integer> snd = !fFirst ? f : g;
1673 +        final Callable<Boolean> complete1 = failFirst ?
1674 +            () -> fst.completeExceptionally(ex) :
1675 +            () -> fst.complete(v1);
1676 +        final Callable<Boolean> complete2 = failFirst ?
1677 +            () -> snd.complete(v1) :
1678 +            () -> snd.completeExceptionally(ex);
1679 +
1680 +        final CompletableFuture<Integer> h1 = m.thenCombine(f, g, r1);
1681 +        assertTrue(complete1.call());
1682 +        final CompletableFuture<Integer> h2 = m.thenCombine(f, g, r2);
1683 +        checkIncomplete(h1);
1684 +        checkIncomplete(h2);
1685 +        assertTrue(complete2.call());
1686 +        final CompletableFuture<Integer> h3 = m.thenCombine(f, g, r3);
1687 +
1688 +        checkCompletedWithWrappedException(h1, ex);
1689 +        checkCompletedWithWrappedException(h2, ex);
1690 +        checkCompletedWithWrappedException(h3, ex);
1691 +        r1.assertNotInvoked();
1692 +        r2.assertNotInvoked();
1693 +        r3.assertNotInvoked();
1694 +        checkCompletedNormally(failFirst ? snd : fst, v1);
1695 +        checkCompletedExceptionally(failFirst ? fst : snd, ex);
1696 +    }}
1697 +
1698 +    /**
1699 +     * thenCombine result completes exceptionally if either source cancelled
1700 +     */
1701 +    public void testThenCombine_sourceCancelled() throws Throwable {
1702 +        for (ExecutionMode m : ExecutionMode.values())
1703 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1704 +        for (boolean fFirst : new boolean[] { true, false })
1705 +        for (boolean failFirst : new boolean[] { true, false })
1706 +        for (Integer v1 : new Integer[] { 1, null })
1707 +    {
1708 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1709 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1710 +        final SubtractFunction r1 = new SubtractFunction(m);
1711 +        final SubtractFunction r2 = new SubtractFunction(m);
1712 +        final SubtractFunction r3 = new SubtractFunction(m);
1713 +
1714 +        final CompletableFuture<Integer> fst =  fFirst ? f : g;
1715 +        final CompletableFuture<Integer> snd = !fFirst ? f : g;
1716 +        final Callable<Boolean> complete1 = failFirst ?
1717 +            () -> fst.cancel(mayInterruptIfRunning) :
1718 +            () -> fst.complete(v1);
1719 +        final Callable<Boolean> complete2 = failFirst ?
1720 +            () -> snd.complete(v1) :
1721 +            () -> snd.cancel(mayInterruptIfRunning);
1722 +
1723 +        final CompletableFuture<Integer> h1 = m.thenCombine(f, g, r1);
1724 +        assertTrue(complete1.call());
1725 +        final CompletableFuture<Integer> h2 = m.thenCombine(f, g, r2);
1726 +        checkIncomplete(h1);
1727 +        checkIncomplete(h2);
1728 +        assertTrue(complete2.call());
1729 +        final CompletableFuture<Integer> h3 = m.thenCombine(f, g, r3);
1730 +
1731 +        checkCompletedWithWrappedCancellationException(h1);
1732 +        checkCompletedWithWrappedCancellationException(h2);
1733 +        checkCompletedWithWrappedCancellationException(h3);
1734 +        r1.assertNotInvoked();
1735 +        r2.assertNotInvoked();
1736 +        r3.assertNotInvoked();
1737 +        checkCompletedNormally(failFirst ? snd : fst, v1);
1738 +        checkCancelled(failFirst ? fst : snd);
1739 +    }}
1740 +
1741 +    /**
1742 +     * thenCombine result completes exceptionally if action does
1743 +     */
1744 +    public void testThenCombine_actionFailed() {
1745 +        for (ExecutionMode m : ExecutionMode.values())
1746 +        for (boolean fFirst : new boolean[] { true, false })
1747 +        for (Integer v1 : new Integer[] { 1, null })
1748 +        for (Integer v2 : new Integer[] { 2, null })
1749 +    {
1750 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1751 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1752 +        final FailingBiFunction r1 = new FailingBiFunction(m);
1753 +        final FailingBiFunction r2 = new FailingBiFunction(m);
1754 +        final FailingBiFunction r3 = new FailingBiFunction(m);
1755 +
1756 +        final CompletableFuture<Integer> fst =  fFirst ? f : g;
1757 +        final CompletableFuture<Integer> snd = !fFirst ? f : g;
1758 +        final Integer w1 =  fFirst ? v1 : v2;
1759 +        final Integer w2 = !fFirst ? v1 : v2;
1760 +
1761 +        final CompletableFuture<Integer> h1 = m.thenCombine(f, g, r1);
1762 +        assertTrue(fst.complete(w1));
1763 +        final CompletableFuture<Integer> h2 = m.thenCombine(f, g, r2);
1764 +        assertTrue(snd.complete(w2));
1765 +        final CompletableFuture<Integer> h3 = m.thenCombine(f, g, r3);
1766 +
1767 +        checkCompletedWithWrappedCFException(h1);
1768 +        checkCompletedWithWrappedCFException(h2);
1769 +        checkCompletedWithWrappedCFException(h3);
1770 +        r1.assertInvoked();
1771 +        r2.assertInvoked();
1772 +        r3.assertInvoked();
1773 +        checkCompletedNormally(f, v1);
1774 +        checkCompletedNormally(g, v2);
1775 +    }}
1776 +
1777 +    /**
1778 +     * thenAcceptBoth result completes normally after normal
1779 +     * completion of sources
1780 +     */
1781 +    public void testThenAcceptBoth_normalCompletion() {
1782 +        for (ExecutionMode m : ExecutionMode.values())
1783 +        for (boolean fFirst : new boolean[] { true, false })
1784 +        for (Integer v1 : new Integer[] { 1, null })
1785 +        for (Integer v2 : new Integer[] { 2, null })
1786 +    {
1787 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1788 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1789 +        final SubtractAction r1 = new SubtractAction(m);
1790 +        final SubtractAction r2 = new SubtractAction(m);
1791 +        final SubtractAction r3 = new SubtractAction(m);
1792 +
1793 +        final CompletableFuture<Integer> fst =  fFirst ? f : g;
1794 +        final CompletableFuture<Integer> snd = !fFirst ? f : g;
1795 +        final Integer w1 =  fFirst ? v1 : v2;
1796 +        final Integer w2 = !fFirst ? v1 : v2;
1797 +
1798 +        final CompletableFuture<Void> h1 = m.thenAcceptBoth(f, g, r1);
1799 +        assertTrue(fst.complete(w1));
1800 +        final CompletableFuture<Void> h2 = m.thenAcceptBoth(f, g, r2);
1801 +        checkIncomplete(h1);
1802 +        checkIncomplete(h2);
1803 +        r1.assertNotInvoked();
1804 +        r2.assertNotInvoked();
1805 +        assertTrue(snd.complete(w2));
1806 +        final CompletableFuture<Void> h3 = m.thenAcceptBoth(f, g, r3);
1807 +
1808 +        checkCompletedNormally(h1, null);
1809 +        checkCompletedNormally(h2, null);
1810 +        checkCompletedNormally(h3, null);
1811 +        r1.assertValue(subtract(v1, v2));
1812 +        r2.assertValue(subtract(v1, v2));
1813 +        r3.assertValue(subtract(v1, v2));
1814 +        checkCompletedNormally(f, v1);
1815 +        checkCompletedNormally(g, v2);
1816 +    }}
1817 +
1818 +    /**
1819 +     * thenAcceptBoth result completes exceptionally after exceptional
1820 +     * completion of either source
1821 +     */
1822 +    public void testThenAcceptBoth_exceptionalCompletion() throws Throwable {
1823 +        for (ExecutionMode m : ExecutionMode.values())
1824 +        for (boolean fFirst : new boolean[] { true, false })
1825 +        for (boolean failFirst : new boolean[] { true, false })
1826 +        for (Integer v1 : new Integer[] { 1, null })
1827 +    {
1828 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1829 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1830 +        final CFException ex = new CFException();
1831 +        final SubtractAction r1 = new SubtractAction(m);
1832 +        final SubtractAction r2 = new SubtractAction(m);
1833 +        final SubtractAction r3 = new SubtractAction(m);
1834 +
1835 +        final CompletableFuture<Integer> fst =  fFirst ? f : g;
1836 +        final CompletableFuture<Integer> snd = !fFirst ? f : g;
1837 +        final Callable<Boolean> complete1 = failFirst ?
1838 +            () -> fst.completeExceptionally(ex) :
1839 +            () -> fst.complete(v1);
1840 +        final Callable<Boolean> complete2 = failFirst ?
1841 +            () -> snd.complete(v1) :
1842 +            () -> snd.completeExceptionally(ex);
1843 +
1844 +        final CompletableFuture<Void> h1 = m.thenAcceptBoth(f, g, r1);
1845 +        assertTrue(complete1.call());
1846 +        final CompletableFuture<Void> h2 = m.thenAcceptBoth(f, g, r2);
1847 +        checkIncomplete(h1);
1848 +        checkIncomplete(h2);
1849 +        assertTrue(complete2.call());
1850 +        final CompletableFuture<Void> h3 = m.thenAcceptBoth(f, g, r3);
1851 +
1852 +        checkCompletedWithWrappedException(h1, ex);
1853 +        checkCompletedWithWrappedException(h2, ex);
1854 +        checkCompletedWithWrappedException(h3, ex);
1855 +        r1.assertNotInvoked();
1856 +        r2.assertNotInvoked();
1857 +        r3.assertNotInvoked();
1858 +        checkCompletedNormally(failFirst ? snd : fst, v1);
1859 +        checkCompletedExceptionally(failFirst ? fst : snd, ex);
1860 +    }}
1861 +
1862 +    /**
1863 +     * thenAcceptBoth result completes exceptionally if either source cancelled
1864 +     */
1865 +    public void testThenAcceptBoth_sourceCancelled() throws Throwable {
1866 +        for (ExecutionMode m : ExecutionMode.values())
1867 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1868 +        for (boolean fFirst : new boolean[] { true, false })
1869 +        for (boolean failFirst : new boolean[] { true, false })
1870 +        for (Integer v1 : new Integer[] { 1, null })
1871 +    {
1872 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1873 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1874 +        final SubtractAction r1 = new SubtractAction(m);
1875 +        final SubtractAction r2 = new SubtractAction(m);
1876 +        final SubtractAction r3 = new SubtractAction(m);
1877 +
1878 +        final CompletableFuture<Integer> fst =  fFirst ? f : g;
1879 +        final CompletableFuture<Integer> snd = !fFirst ? f : g;
1880 +        final Callable<Boolean> complete1 = failFirst ?
1881 +            () -> fst.cancel(mayInterruptIfRunning) :
1882 +            () -> fst.complete(v1);
1883 +        final Callable<Boolean> complete2 = failFirst ?
1884 +            () -> snd.complete(v1) :
1885 +            () -> snd.cancel(mayInterruptIfRunning);
1886 +
1887 +        final CompletableFuture<Void> h1 = m.thenAcceptBoth(f, g, r1);
1888 +        assertTrue(complete1.call());
1889 +        final CompletableFuture<Void> h2 = m.thenAcceptBoth(f, g, r2);
1890 +        checkIncomplete(h1);
1891 +        checkIncomplete(h2);
1892 +        assertTrue(complete2.call());
1893 +        final CompletableFuture<Void> h3 = m.thenAcceptBoth(f, g, r3);
1894 +
1895 +        checkCompletedWithWrappedCancellationException(h1);
1896 +        checkCompletedWithWrappedCancellationException(h2);
1897 +        checkCompletedWithWrappedCancellationException(h3);
1898 +        r1.assertNotInvoked();
1899 +        r2.assertNotInvoked();
1900 +        r3.assertNotInvoked();
1901 +        checkCompletedNormally(failFirst ? snd : fst, v1);
1902 +        checkCancelled(failFirst ? fst : snd);
1903 +    }}
1904 +
1905 +    /**
1906 +     * thenAcceptBoth result completes exceptionally if action does
1907 +     */
1908 +    public void testThenAcceptBoth_actionFailed() {
1909 +        for (ExecutionMode m : ExecutionMode.values())
1910 +        for (boolean fFirst : new boolean[] { true, false })
1911 +        for (Integer v1 : new Integer[] { 1, null })
1912 +        for (Integer v2 : new Integer[] { 2, null })
1913 +    {
1914 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1915 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1916 +        final FailingBiConsumer r1 = new FailingBiConsumer(m);
1917 +        final FailingBiConsumer r2 = new FailingBiConsumer(m);
1918 +        final FailingBiConsumer r3 = new FailingBiConsumer(m);
1919 +
1920 +        final CompletableFuture<Integer> fst =  fFirst ? f : g;
1921 +        final CompletableFuture<Integer> snd = !fFirst ? f : g;
1922 +        final Integer w1 =  fFirst ? v1 : v2;
1923 +        final Integer w2 = !fFirst ? v1 : v2;
1924 +
1925 +        final CompletableFuture<Void> h1 = m.thenAcceptBoth(f, g, r1);
1926 +        assertTrue(fst.complete(w1));
1927 +        final CompletableFuture<Void> h2 = m.thenAcceptBoth(f, g, r2);
1928 +        assertTrue(snd.complete(w2));
1929 +        final CompletableFuture<Void> h3 = m.thenAcceptBoth(f, g, r3);
1930 +
1931 +        checkCompletedWithWrappedCFException(h1);
1932 +        checkCompletedWithWrappedCFException(h2);
1933 +        checkCompletedWithWrappedCFException(h3);
1934 +        r1.assertInvoked();
1935 +        r2.assertInvoked();
1936 +        r3.assertInvoked();
1937 +        checkCompletedNormally(f, v1);
1938 +        checkCompletedNormally(g, v2);
1939 +    }}
1940 +
1941 +    /**
1942 +     * runAfterBoth result completes normally after normal
1943 +     * completion of sources
1944 +     */
1945 +    public void testRunAfterBoth_normalCompletion() {
1946 +        for (ExecutionMode m : ExecutionMode.values())
1947 +        for (boolean fFirst : new boolean[] { true, false })
1948 +        for (Integer v1 : new Integer[] { 1, null })
1949 +        for (Integer v2 : new Integer[] { 2, null })
1950 +    {
1951 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1952 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1953 +        final Noop r1 = new Noop(m);
1954 +        final Noop r2 = new Noop(m);
1955 +        final Noop r3 = new Noop(m);
1956 +
1957 +        final CompletableFuture<Integer> fst =  fFirst ? f : g;
1958 +        final CompletableFuture<Integer> snd = !fFirst ? f : g;
1959 +        final Integer w1 =  fFirst ? v1 : v2;
1960 +        final Integer w2 = !fFirst ? v1 : v2;
1961 +
1962 +        final CompletableFuture<Void> h1 = m.runAfterBoth(f, g, r1);
1963 +        assertTrue(fst.complete(w1));
1964 +        final CompletableFuture<Void> h2 = m.runAfterBoth(f, g, r2);
1965 +        checkIncomplete(h1);
1966 +        checkIncomplete(h2);
1967 +        r1.assertNotInvoked();
1968 +        r2.assertNotInvoked();
1969 +        assertTrue(snd.complete(w2));
1970 +        final CompletableFuture<Void> h3 = m.runAfterBoth(f, g, r3);
1971 +
1972 +        checkCompletedNormally(h1, null);
1973 +        checkCompletedNormally(h2, null);
1974 +        checkCompletedNormally(h3, null);
1975 +        r1.assertInvoked();
1976 +        r2.assertInvoked();
1977 +        r3.assertInvoked();
1978 +        checkCompletedNormally(f, v1);
1979 +        checkCompletedNormally(g, v2);
1980 +    }}
1981 +
1982 +    /**
1983 +     * runAfterBoth result completes exceptionally after exceptional
1984 +     * completion of either source
1985 +     */
1986 +    public void testRunAfterBoth_exceptionalCompletion() throws Throwable {
1987 +        for (ExecutionMode m : ExecutionMode.values())
1988 +        for (boolean fFirst : new boolean[] { true, false })
1989 +        for (boolean failFirst : new boolean[] { true, false })
1990 +        for (Integer v1 : new Integer[] { 1, null })
1991 +    {
1992 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1993 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1994 +        final CFException ex = new CFException();
1995 +        final Noop r1 = new Noop(m);
1996 +        final Noop r2 = new Noop(m);
1997 +        final Noop r3 = new Noop(m);
1998 +
1999 +        final CompletableFuture<Integer> fst =  fFirst ? f : g;
2000 +        final CompletableFuture<Integer> snd = !fFirst ? f : g;
2001 +        final Callable<Boolean> complete1 = failFirst ?
2002 +            () -> fst.completeExceptionally(ex) :
2003 +            () -> fst.complete(v1);
2004 +        final Callable<Boolean> complete2 = failFirst ?
2005 +            () -> snd.complete(v1) :
2006 +            () -> snd.completeExceptionally(ex);
2007 +
2008 +        final CompletableFuture<Void> h1 = m.runAfterBoth(f, g, r1);
2009 +        assertTrue(complete1.call());
2010 +        final CompletableFuture<Void> h2 = m.runAfterBoth(f, g, r2);
2011 +        checkIncomplete(h1);
2012 +        checkIncomplete(h2);
2013 +        assertTrue(complete2.call());
2014 +        final CompletableFuture<Void> h3 = m.runAfterBoth(f, g, r3);
2015 +
2016 +        checkCompletedWithWrappedException(h1, ex);
2017 +        checkCompletedWithWrappedException(h2, ex);
2018 +        checkCompletedWithWrappedException(h3, ex);
2019 +        r1.assertNotInvoked();
2020 +        r2.assertNotInvoked();
2021 +        r3.assertNotInvoked();
2022 +        checkCompletedNormally(failFirst ? snd : fst, v1);
2023 +        checkCompletedExceptionally(failFirst ? fst : snd, ex);
2024 +    }}
2025 +
2026 +    /**
2027 +     * runAfterBoth result completes exceptionally if either source cancelled
2028 +     */
2029 +    public void testRunAfterBoth_sourceCancelled() throws Throwable {
2030 +        for (ExecutionMode m : ExecutionMode.values())
2031 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2032 +        for (boolean fFirst : new boolean[] { true, false })
2033 +        for (boolean failFirst : new boolean[] { true, false })
2034 +        for (Integer v1 : new Integer[] { 1, null })
2035 +    {
2036 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2037 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2038 +        final Noop r1 = new Noop(m);
2039 +        final Noop r2 = new Noop(m);
2040 +        final Noop r3 = new Noop(m);
2041 +
2042 +        final CompletableFuture<Integer> fst =  fFirst ? f : g;
2043 +        final CompletableFuture<Integer> snd = !fFirst ? f : g;
2044 +        final Callable<Boolean> complete1 = failFirst ?
2045 +            () -> fst.cancel(mayInterruptIfRunning) :
2046 +            () -> fst.complete(v1);
2047 +        final Callable<Boolean> complete2 = failFirst ?
2048 +            () -> snd.complete(v1) :
2049 +            () -> snd.cancel(mayInterruptIfRunning);
2050 +
2051 +        final CompletableFuture<Void> h1 = m.runAfterBoth(f, g, r1);
2052 +        assertTrue(complete1.call());
2053 +        final CompletableFuture<Void> h2 = m.runAfterBoth(f, g, r2);
2054 +        checkIncomplete(h1);
2055 +        checkIncomplete(h2);
2056 +        assertTrue(complete2.call());
2057 +        final CompletableFuture<Void> h3 = m.runAfterBoth(f, g, r3);
2058 +
2059 +        checkCompletedWithWrappedCancellationException(h1);
2060 +        checkCompletedWithWrappedCancellationException(h2);
2061 +        checkCompletedWithWrappedCancellationException(h3);
2062 +        r1.assertNotInvoked();
2063 +        r2.assertNotInvoked();
2064 +        r3.assertNotInvoked();
2065 +        checkCompletedNormally(failFirst ? snd : fst, v1);
2066 +        checkCancelled(failFirst ? fst : snd);
2067 +    }}
2068 +
2069 +    /**
2070 +     * runAfterBoth result completes exceptionally if action does
2071 +     */
2072 +    public void testRunAfterBoth_actionFailed() {
2073 +        for (ExecutionMode m : ExecutionMode.values())
2074 +        for (boolean fFirst : new boolean[] { true, false })
2075 +        for (Integer v1 : new Integer[] { 1, null })
2076 +        for (Integer v2 : new Integer[] { 2, null })
2077 +    {
2078 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2079 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2080 +        final FailingRunnable r1 = new FailingRunnable(m);
2081 +        final FailingRunnable r2 = new FailingRunnable(m);
2082 +        final FailingRunnable r3 = new FailingRunnable(m);
2083 +
2084 +        final CompletableFuture<Integer> fst =  fFirst ? f : g;
2085 +        final CompletableFuture<Integer> snd = !fFirst ? f : g;
2086 +        final Integer w1 =  fFirst ? v1 : v2;
2087 +        final Integer w2 = !fFirst ? v1 : v2;
2088 +
2089 +        final CompletableFuture<Void> h1 = m.runAfterBoth(f, g, r1);
2090 +        assertTrue(fst.complete(w1));
2091 +        final CompletableFuture<Void> h2 = m.runAfterBoth(f, g, r2);
2092 +        assertTrue(snd.complete(w2));
2093 +        final CompletableFuture<Void> h3 = m.runAfterBoth(f, g, r3);
2094 +
2095 +        checkCompletedWithWrappedCFException(h1);
2096 +        checkCompletedWithWrappedCFException(h2);
2097 +        checkCompletedWithWrappedCFException(h3);
2098 +        r1.assertInvoked();
2099 +        r2.assertInvoked();
2100 +        r3.assertInvoked();
2101 +        checkCompletedNormally(f, v1);
2102 +        checkCompletedNormally(g, v2);
2103 +    }}
2104 +
2105 +    /**
2106 +     * applyToEither result completes normally after normal completion
2107 +     * of either source
2108 +     */
2109 +    public void testApplyToEither_normalCompletion() {
2110 +        for (ExecutionMode m : ExecutionMode.values())
2111 +        for (Integer v1 : new Integer[] { 1, null })
2112 +        for (Integer v2 : new Integer[] { 2, null })
2113 +    {
2114 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2115 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2116 +        final IncFunction[] rs = new IncFunction[6];
2117 +        for (int i = 0; i < rs.length; i++) rs[i] = new IncFunction(m);
2118 +
2119 +        final CompletableFuture<Integer> h0 = m.applyToEither(f, g, rs[0]);
2120 +        final CompletableFuture<Integer> h1 = m.applyToEither(g, f, rs[1]);
2121 +        checkIncomplete(h0);
2122 +        checkIncomplete(h1);
2123 +        rs[0].assertNotInvoked();
2124 +        rs[1].assertNotInvoked();
2125 +        f.complete(v1);
2126 +        checkCompletedNormally(h0, inc(v1));
2127 +        checkCompletedNormally(h1, inc(v1));
2128 +        final CompletableFuture<Integer> h2 = m.applyToEither(f, g, rs[2]);
2129 +        final CompletableFuture<Integer> h3 = m.applyToEither(g, f, rs[3]);
2130 +        checkCompletedNormally(h2, inc(v1));
2131 +        checkCompletedNormally(h3, inc(v1));
2132 +        g.complete(v2);
2133 +
2134 +        // unspecified behavior - both source completions available
2135 +        final CompletableFuture<Integer> h4 = m.applyToEither(f, g, rs[4]);
2136 +        final CompletableFuture<Integer> h5 = m.applyToEither(g, f, rs[5]);
2137 +        rs[4].assertValue(h4.join());
2138 +        rs[5].assertValue(h5.join());
2139 +        assertTrue(Objects.equals(inc(v1), h4.join()) ||
2140 +                   Objects.equals(inc(v2), h4.join()));
2141 +        assertTrue(Objects.equals(inc(v1), h5.join()) ||
2142 +                   Objects.equals(inc(v2), h5.join()));
2143 +
2144 +        checkCompletedNormally(f, v1);
2145 +        checkCompletedNormally(g, v2);
2146 +        checkCompletedNormally(h0, inc(v1));
2147 +        checkCompletedNormally(h1, inc(v1));
2148 +        checkCompletedNormally(h2, inc(v1));
2149 +        checkCompletedNormally(h3, inc(v1));
2150 +        for (int i = 0; i < 4; i++) rs[i].assertValue(inc(v1));
2151 +    }}
2152 +
2153 +    /**
2154 +     * applyToEither result completes exceptionally after exceptional
2155 +     * completion of either source
2156 +     */
2157 +    public void testApplyToEither_exceptionalCompletion() {
2158 +        for (ExecutionMode m : ExecutionMode.values())
2159 +        for (Integer v1 : new Integer[] { 1, null })
2160 +    {
2161 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2162 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2163 +        final CFException ex = new CFException();
2164 +        final IncFunction[] rs = new IncFunction[6];
2165 +        for (int i = 0; i < rs.length; i++) rs[i] = new IncFunction(m);
2166 +
2167 +        final CompletableFuture<Integer> h0 = m.applyToEither(f, g, rs[0]);
2168 +        final CompletableFuture<Integer> h1 = m.applyToEither(g, f, rs[1]);
2169 +        checkIncomplete(h0);
2170 +        checkIncomplete(h1);
2171 +        rs[0].assertNotInvoked();
2172 +        rs[1].assertNotInvoked();
2173 +        f.completeExceptionally(ex);
2174 +        checkCompletedWithWrappedException(h0, ex);
2175 +        checkCompletedWithWrappedException(h1, ex);
2176 +        final CompletableFuture<Integer> h2 = m.applyToEither(f, g, rs[2]);
2177 +        final CompletableFuture<Integer> h3 = m.applyToEither(g, f, rs[3]);
2178 +        checkCompletedWithWrappedException(h2, ex);
2179 +        checkCompletedWithWrappedException(h3, ex);
2180 +        g.complete(v1);
2181 +
2182 +        // unspecified behavior - both source completions available
2183 +        final CompletableFuture<Integer> h4 = m.applyToEither(f, g, rs[4]);
2184 +        final CompletableFuture<Integer> h5 = m.applyToEither(g, f, rs[5]);
2185 +        try {
2186 +            assertEquals(inc(v1), h4.join());
2187 +            rs[4].assertValue(inc(v1));
2188 +        } catch (CompletionException ok) {
2189 +            checkCompletedWithWrappedException(h4, ex);
2190 +            rs[4].assertNotInvoked();
2191 +        }
2192 +        try {
2193 +            assertEquals(inc(v1), h5.join());
2194 +            rs[5].assertValue(inc(v1));
2195 +        } catch (CompletionException ok) {
2196 +            checkCompletedWithWrappedException(h5, ex);
2197 +            rs[5].assertNotInvoked();
2198 +        }
2199 +
2200 +        checkCompletedExceptionally(f, ex);
2201 +        checkCompletedNormally(g, v1);
2202 +        checkCompletedWithWrappedException(h0, ex);
2203 +        checkCompletedWithWrappedException(h1, ex);
2204 +        checkCompletedWithWrappedException(h2, ex);
2205 +        checkCompletedWithWrappedException(h3, ex);
2206 +        checkCompletedWithWrappedException(h4, ex);
2207 +        for (int i = 0; i < 4; i++) rs[i].assertNotInvoked();
2208 +    }}
2209 +
2210 +    public void testApplyToEither_exceptionalCompletion2() {
2211 +        for (ExecutionMode m : ExecutionMode.values())
2212 +        for (boolean fFirst : new boolean[] { true, false })
2213 +        for (Integer v1 : new Integer[] { 1, null })
2214 +    {
2215 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2216 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2217 +        final CFException ex = new CFException();
2218 +        final IncFunction[] rs = new IncFunction[6];
2219 +        for (int i = 0; i < rs.length; i++) rs[i] = new IncFunction(m);
2220 +
2221 +        final CompletableFuture<Integer> h0 = m.applyToEither(f, g, rs[0]);
2222 +        final CompletableFuture<Integer> h1 = m.applyToEither(g, f, rs[1]);
2223 +        assertTrue(fFirst ? f.complete(v1) : g.completeExceptionally(ex));
2224 +        assertTrue(!fFirst ? f.complete(v1) : g.completeExceptionally(ex));
2225 +        final CompletableFuture<Integer> h2 = m.applyToEither(f, g, rs[2]);
2226 +        final CompletableFuture<Integer> h3 = m.applyToEither(g, f, rs[3]);
2227 +
2228 +        // unspecified behavior - both source completions available
2229 +        try {
2230 +            assertEquals(inc(v1), h0.join());
2231 +            rs[0].assertValue(inc(v1));
2232 +        } catch (CompletionException ok) {
2233 +            checkCompletedWithWrappedException(h0, ex);
2234 +            rs[0].assertNotInvoked();
2235 +        }
2236 +        try {
2237 +            assertEquals(inc(v1), h1.join());
2238 +            rs[1].assertValue(inc(v1));
2239 +        } catch (CompletionException ok) {
2240 +            checkCompletedWithWrappedException(h1, ex);
2241 +            rs[1].assertNotInvoked();
2242 +        }
2243 +        try {
2244 +            assertEquals(inc(v1), h2.join());
2245 +            rs[2].assertValue(inc(v1));
2246 +        } catch (CompletionException ok) {
2247 +            checkCompletedWithWrappedException(h2, ex);
2248 +            rs[2].assertNotInvoked();
2249 +        }
2250 +        try {
2251 +            assertEquals(inc(v1), h3.join());
2252 +            rs[3].assertValue(inc(v1));
2253 +        } catch (CompletionException ok) {
2254 +            checkCompletedWithWrappedException(h3, ex);
2255 +            rs[3].assertNotInvoked();
2256 +        }
2257 +
2258 +        checkCompletedNormally(f, v1);
2259 +        checkCompletedExceptionally(g, ex);
2260 +    }}
2261 +
2262 +    /**
2263 +     * applyToEither result completes exceptionally if either source cancelled
2264 +     */
2265 +    public void testApplyToEither_sourceCancelled() {
2266 +        for (ExecutionMode m : ExecutionMode.values())
2267 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2268 +        for (Integer v1 : new Integer[] { 1, null })
2269 +    {
2270 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2271 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2272 +        final IncFunction[] rs = new IncFunction[6];
2273 +        for (int i = 0; i < rs.length; i++) rs[i] = new IncFunction(m);
2274 +
2275 +        final CompletableFuture<Integer> h0 = m.applyToEither(f, g, rs[0]);
2276 +        final CompletableFuture<Integer> h1 = m.applyToEither(g, f, rs[1]);
2277 +        checkIncomplete(h0);
2278 +        checkIncomplete(h1);
2279 +        rs[0].assertNotInvoked();
2280 +        rs[1].assertNotInvoked();
2281 +        f.cancel(mayInterruptIfRunning);
2282 +        checkCompletedWithWrappedCancellationException(h0);
2283 +        checkCompletedWithWrappedCancellationException(h1);
2284 +        final CompletableFuture<Integer> h2 = m.applyToEither(f, g, rs[2]);
2285 +        final CompletableFuture<Integer> h3 = m.applyToEither(g, f, rs[3]);
2286 +        checkCompletedWithWrappedCancellationException(h2);
2287 +        checkCompletedWithWrappedCancellationException(h3);
2288 +        g.complete(v1);
2289 +
2290 +        // unspecified behavior - both source completions available
2291 +        final CompletableFuture<Integer> h4 = m.applyToEither(f, g, rs[4]);
2292 +        final CompletableFuture<Integer> h5 = m.applyToEither(g, f, rs[5]);
2293 +        try {
2294 +            assertEquals(inc(v1), h4.join());
2295 +            rs[4].assertValue(inc(v1));
2296 +        } catch (CompletionException ok) {
2297 +            checkCompletedWithWrappedCancellationException(h4);
2298 +            rs[4].assertNotInvoked();
2299 +        }
2300 +        try {
2301 +            assertEquals(inc(v1), h5.join());
2302 +            rs[5].assertValue(inc(v1));
2303 +        } catch (CompletionException ok) {
2304 +            checkCompletedWithWrappedCancellationException(h5);
2305 +            rs[5].assertNotInvoked();
2306 +        }
2307 +
2308 +        checkCancelled(f);
2309 +        checkCompletedNormally(g, v1);
2310 +        checkCompletedWithWrappedCancellationException(h0);
2311 +        checkCompletedWithWrappedCancellationException(h1);
2312 +        checkCompletedWithWrappedCancellationException(h2);
2313 +        checkCompletedWithWrappedCancellationException(h3);
2314 +        for (int i = 0; i < 4; i++) rs[i].assertNotInvoked();
2315 +    }}
2316 +
2317 +    public void testApplyToEither_sourceCancelled2() {
2318 +        for (ExecutionMode m : ExecutionMode.values())
2319 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2320 +        for (boolean fFirst : new boolean[] { true, false })
2321 +        for (Integer v1 : new Integer[] { 1, null })
2322 +    {
2323 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2324 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2325 +        final IncFunction[] rs = new IncFunction[6];
2326 +        for (int i = 0; i < rs.length; i++) rs[i] = new IncFunction(m);
2327 +
2328 +        final CompletableFuture<Integer> h0 = m.applyToEither(f, g, rs[0]);
2329 +        final CompletableFuture<Integer> h1 = m.applyToEither(g, f, rs[1]);
2330 +        assertTrue(fFirst ? f.complete(v1) : g.cancel(mayInterruptIfRunning));
2331 +        assertTrue(!fFirst ? f.complete(v1) : g.cancel(mayInterruptIfRunning));
2332 +        final CompletableFuture<Integer> h2 = m.applyToEither(f, g, rs[2]);
2333 +        final CompletableFuture<Integer> h3 = m.applyToEither(g, f, rs[3]);
2334 +
2335 +        // unspecified behavior - both source completions available
2336 +        try {
2337 +            assertEquals(inc(v1), h0.join());
2338 +            rs[0].assertValue(inc(v1));
2339 +        } catch (CompletionException ok) {
2340 +            checkCompletedWithWrappedCancellationException(h0);
2341 +            rs[0].assertNotInvoked();
2342 +        }
2343 +        try {
2344 +            assertEquals(inc(v1), h1.join());
2345 +            rs[1].assertValue(inc(v1));
2346 +        } catch (CompletionException ok) {
2347 +            checkCompletedWithWrappedCancellationException(h1);
2348 +            rs[1].assertNotInvoked();
2349 +        }
2350 +        try {
2351 +            assertEquals(inc(v1), h2.join());
2352 +            rs[2].assertValue(inc(v1));
2353 +        } catch (CompletionException ok) {
2354 +            checkCompletedWithWrappedCancellationException(h2);
2355 +            rs[2].assertNotInvoked();
2356 +        }
2357 +        try {
2358 +            assertEquals(inc(v1), h3.join());
2359 +            rs[3].assertValue(inc(v1));
2360 +        } catch (CompletionException ok) {
2361 +            checkCompletedWithWrappedCancellationException(h3);
2362 +            rs[3].assertNotInvoked();
2363 +        }
2364 +
2365 +        checkCompletedNormally(f, v1);
2366 +        checkCancelled(g);
2367 +    }}
2368 +
2369 +    /**
2370 +     * applyToEither result completes exceptionally if action does
2371 +     */
2372 +    public void testApplyToEither_actionFailed() {
2373 +        for (ExecutionMode m : ExecutionMode.values())
2374 +        for (Integer v1 : new Integer[] { 1, null })
2375 +        for (Integer v2 : new Integer[] { 2, null })
2376 +    {
2377 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2378 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2379 +        final FailingFunction[] rs = new FailingFunction[6];
2380 +        for (int i = 0; i < rs.length; i++) rs[i] = new FailingFunction(m);
2381 +
2382 +        final CompletableFuture<Integer> h0 = m.applyToEither(f, g, rs[0]);
2383 +        final CompletableFuture<Integer> h1 = m.applyToEither(g, f, rs[1]);
2384 +        f.complete(v1);
2385 +        final CompletableFuture<Integer> h2 = m.applyToEither(f, g, rs[2]);
2386 +        final CompletableFuture<Integer> h3 = m.applyToEither(g, f, rs[3]);
2387 +        checkCompletedWithWrappedCFException(h0);
2388 +        checkCompletedWithWrappedCFException(h1);
2389 +        checkCompletedWithWrappedCFException(h2);
2390 +        checkCompletedWithWrappedCFException(h3);
2391 +        for (int i = 0; i < 4; i++) rs[i].assertValue(v1);
2392 +
2393 +        g.complete(v2);
2394 +
2395 +        // unspecified behavior - both source completions available
2396 +        final CompletableFuture<Integer> h4 = m.applyToEither(f, g, rs[4]);
2397 +        final CompletableFuture<Integer> h5 = m.applyToEither(g, f, rs[5]);
2398 +
2399 +        checkCompletedWithWrappedCFException(h4);
2400 +        assertTrue(Objects.equals(v1, rs[4].value) ||
2401 +                   Objects.equals(v2, rs[4].value));
2402 +        checkCompletedWithWrappedCFException(h5);
2403 +        assertTrue(Objects.equals(v1, rs[5].value) ||
2404 +                   Objects.equals(v2, rs[5].value));
2405 +
2406 +        checkCompletedNormally(f, v1);
2407 +        checkCompletedNormally(g, v2);
2408 +    }}
2409 +
2410 +    /**
2411 +     * acceptEither result completes normally after normal completion
2412 +     * of either source
2413 +     */
2414 +    public void testAcceptEither_normalCompletion() {
2415 +        for (ExecutionMode m : ExecutionMode.values())
2416 +        for (Integer v1 : new Integer[] { 1, null })
2417 +        for (Integer v2 : new Integer[] { 2, null })
2418 +    {
2419 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2420 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2421 +        final NoopConsumer[] rs = new NoopConsumer[6];
2422 +        for (int i = 0; i < rs.length; i++) rs[i] = new NoopConsumer(m);
2423 +
2424 +        final CompletableFuture<Void> h0 = m.acceptEither(f, g, rs[0]);
2425 +        final CompletableFuture<Void> h1 = m.acceptEither(g, f, rs[1]);
2426 +        checkIncomplete(h0);
2427 +        checkIncomplete(h1);
2428 +        rs[0].assertNotInvoked();
2429 +        rs[1].assertNotInvoked();
2430 +        f.complete(v1);
2431 +        checkCompletedNormally(h0, null);
2432 +        checkCompletedNormally(h1, null);
2433 +        rs[0].assertValue(v1);
2434 +        rs[1].assertValue(v1);
2435 +        final CompletableFuture<Void> h2 = m.acceptEither(f, g, rs[2]);
2436 +        final CompletableFuture<Void> h3 = m.acceptEither(g, f, rs[3]);
2437 +        checkCompletedNormally(h2, null);
2438 +        checkCompletedNormally(h3, null);
2439 +        rs[2].assertValue(v1);
2440 +        rs[3].assertValue(v1);
2441 +        g.complete(v2);
2442 +
2443 +        // unspecified behavior - both source completions available
2444 +        final CompletableFuture<Void> h4 = m.acceptEither(f, g, rs[4]);
2445 +        final CompletableFuture<Void> h5 = m.acceptEither(g, f, rs[5]);
2446 +        checkCompletedNormally(h4, null);
2447 +        checkCompletedNormally(h5, null);
2448 +        assertTrue(Objects.equals(v1, rs[4].value) ||
2449 +                   Objects.equals(v2, rs[4].value));
2450 +        assertTrue(Objects.equals(v1, rs[5].value) ||
2451 +                   Objects.equals(v2, rs[5].value));
2452 +
2453 +        checkCompletedNormally(f, v1);
2454 +        checkCompletedNormally(g, v2);
2455 +        checkCompletedNormally(h0, null);
2456 +        checkCompletedNormally(h1, null);
2457 +        checkCompletedNormally(h2, null);
2458 +        checkCompletedNormally(h3, null);
2459 +        for (int i = 0; i < 4; i++) rs[i].assertValue(v1);
2460 +    }}
2461 +
2462 +    /**
2463 +     * acceptEither result completes exceptionally after exceptional
2464 +     * completion of either source
2465 +     */
2466 +    public void testAcceptEither_exceptionalCompletion() {
2467 +        for (ExecutionMode m : ExecutionMode.values())
2468 +        for (Integer v1 : new Integer[] { 1, null })
2469 +    {
2470 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2471 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2472 +        final CFException ex = new CFException();
2473 +        final NoopConsumer[] rs = new NoopConsumer[6];
2474 +        for (int i = 0; i < rs.length; i++) rs[i] = new NoopConsumer(m);
2475 +
2476 +        final CompletableFuture<Void> h0 = m.acceptEither(f, g, rs[0]);
2477 +        final CompletableFuture<Void> h1 = m.acceptEither(g, f, rs[1]);
2478 +        checkIncomplete(h0);
2479 +        checkIncomplete(h1);
2480 +        rs[0].assertNotInvoked();
2481 +        rs[1].assertNotInvoked();
2482 +        f.completeExceptionally(ex);
2483 +        checkCompletedWithWrappedException(h0, ex);
2484 +        checkCompletedWithWrappedException(h1, ex);
2485 +        final CompletableFuture<Void> h2 = m.acceptEither(f, g, rs[2]);
2486 +        final CompletableFuture<Void> h3 = m.acceptEither(g, f, rs[3]);
2487 +        checkCompletedWithWrappedException(h2, ex);
2488 +        checkCompletedWithWrappedException(h3, ex);
2489 +
2490 +        g.complete(v1);
2491 +
2492 +        // unspecified behavior - both source completions available
2493 +        final CompletableFuture<Void> h4 = m.acceptEither(f, g, rs[4]);
2494 +        final CompletableFuture<Void> h5 = m.acceptEither(g, f, rs[5]);
2495 +        try {
2496 +            assertNull(h4.join());
2497 +            rs[4].assertValue(v1);
2498 +        } catch (CompletionException ok) {
2499 +            checkCompletedWithWrappedException(h4, ex);
2500 +            rs[4].assertNotInvoked();
2501 +        }
2502 +        try {
2503 +            assertNull(h5.join());
2504 +            rs[5].assertValue(v1);
2505 +        } catch (CompletionException ok) {
2506 +            checkCompletedWithWrappedException(h5, ex);
2507 +            rs[5].assertNotInvoked();
2508 +        }
2509 +
2510 +        checkCompletedExceptionally(f, ex);
2511 +        checkCompletedNormally(g, v1);
2512 +        checkCompletedWithWrappedException(h0, ex);
2513 +        checkCompletedWithWrappedException(h1, ex);
2514 +        checkCompletedWithWrappedException(h2, ex);
2515 +        checkCompletedWithWrappedException(h3, ex);
2516 +        checkCompletedWithWrappedException(h4, ex);
2517 +        for (int i = 0; i < 4; i++) rs[i].assertNotInvoked();
2518 +    }}
2519 +
2520 +    public void testAcceptEither_exceptionalCompletion2() {
2521 +        for (ExecutionMode m : ExecutionMode.values())
2522 +        for (boolean fFirst : new boolean[] { true, false })
2523 +        for (Integer v1 : new Integer[] { 1, null })
2524 +    {
2525 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2526 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2527 +        final CFException ex = new CFException();
2528 +        final NoopConsumer[] rs = new NoopConsumer[6];
2529 +        for (int i = 0; i < rs.length; i++) rs[i] = new NoopConsumer(m);
2530 +
2531 +        final CompletableFuture<Void> h0 = m.acceptEither(f, g, rs[0]);
2532 +        final CompletableFuture<Void> h1 = m.acceptEither(g, f, rs[1]);
2533 +        assertTrue(fFirst ? f.complete(v1) : g.completeExceptionally(ex));
2534 +        assertTrue(!fFirst ? f.complete(v1) : g.completeExceptionally(ex));
2535 +        final CompletableFuture<Void> h2 = m.acceptEither(f, g, rs[2]);
2536 +        final CompletableFuture<Void> h3 = m.acceptEither(g, f, rs[3]);
2537 +
2538 +        // unspecified behavior - both source completions available
2539 +        try {
2540 +            assertEquals(null, h0.join());
2541 +            rs[0].assertValue(v1);
2542 +        } catch (CompletionException ok) {
2543 +            checkCompletedWithWrappedException(h0, ex);
2544 +            rs[0].assertNotInvoked();
2545 +        }
2546 +        try {
2547 +            assertEquals(null, h1.join());
2548 +            rs[1].assertValue(v1);
2549 +        } catch (CompletionException ok) {
2550 +            checkCompletedWithWrappedException(h1, ex);
2551 +            rs[1].assertNotInvoked();
2552 +        }
2553 +        try {
2554 +            assertEquals(null, h2.join());
2555 +            rs[2].assertValue(v1);
2556 +        } catch (CompletionException ok) {
2557 +            checkCompletedWithWrappedException(h2, ex);
2558 +            rs[2].assertNotInvoked();
2559 +        }
2560 +        try {
2561 +            assertEquals(null, h3.join());
2562 +            rs[3].assertValue(v1);
2563 +        } catch (CompletionException ok) {
2564 +            checkCompletedWithWrappedException(h3, ex);
2565 +            rs[3].assertNotInvoked();
2566 +        }
2567 +
2568 +        checkCompletedNormally(f, v1);
2569 +        checkCompletedExceptionally(g, ex);
2570 +    }}
2571 +
2572 +    /**
2573 +     * acceptEither result completes exceptionally if either source cancelled
2574 +     */
2575 +    public void testAcceptEither_sourceCancelled() {
2576 +        for (ExecutionMode m : ExecutionMode.values())
2577 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2578 +        for (Integer v1 : new Integer[] { 1, null })
2579 +    {
2580 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2581 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2582 +        final NoopConsumer[] rs = new NoopConsumer[6];
2583 +        for (int i = 0; i < rs.length; i++) rs[i] = new NoopConsumer(m);
2584 +
2585 +        final CompletableFuture<Void> h0 = m.acceptEither(f, g, rs[0]);
2586 +        final CompletableFuture<Void> h1 = m.acceptEither(g, f, rs[1]);
2587 +        checkIncomplete(h0);
2588 +        checkIncomplete(h1);
2589 +        rs[0].assertNotInvoked();
2590 +        rs[1].assertNotInvoked();
2591 +        f.cancel(mayInterruptIfRunning);
2592 +        checkCompletedWithWrappedCancellationException(h0);
2593 +        checkCompletedWithWrappedCancellationException(h1);
2594 +        final CompletableFuture<Void> h2 = m.acceptEither(f, g, rs[2]);
2595 +        final CompletableFuture<Void> h3 = m.acceptEither(g, f, rs[3]);
2596 +        checkCompletedWithWrappedCancellationException(h2);
2597 +        checkCompletedWithWrappedCancellationException(h3);
2598 +
2599 +        g.complete(v1);
2600 +
2601 +        // unspecified behavior - both source completions available
2602 +        final CompletableFuture<Void> h4 = m.acceptEither(f, g, rs[4]);
2603 +        final CompletableFuture<Void> h5 = m.acceptEither(g, f, rs[5]);
2604 +        try {
2605 +            assertNull(h4.join());
2606 +            rs[4].assertValue(v1);
2607 +        } catch (CompletionException ok) {
2608 +            checkCompletedWithWrappedCancellationException(h4);
2609 +            rs[4].assertNotInvoked();
2610 +        }
2611 +        try {
2612 +            assertNull(h5.join());
2613 +            rs[5].assertValue(v1);
2614 +        } catch (CompletionException ok) {
2615 +            checkCompletedWithWrappedCancellationException(h5);
2616 +            rs[5].assertNotInvoked();
2617 +        }
2618 +
2619 +        checkCancelled(f);
2620 +        checkCompletedNormally(g, v1);
2621 +        checkCompletedWithWrappedCancellationException(h0);
2622 +        checkCompletedWithWrappedCancellationException(h1);
2623 +        checkCompletedWithWrappedCancellationException(h2);
2624 +        checkCompletedWithWrappedCancellationException(h3);
2625 +        for (int i = 0; i < 4; i++) rs[i].assertNotInvoked();
2626 +    }}
2627 +
2628 +    /**
2629 +     * acceptEither result completes exceptionally if action does
2630 +     */
2631 +    public void testAcceptEither_actionFailed() {
2632 +        for (ExecutionMode m : ExecutionMode.values())
2633 +        for (Integer v1 : new Integer[] { 1, null })
2634 +        for (Integer v2 : new Integer[] { 2, null })
2635 +    {
2636 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2637 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2638 +        final FailingConsumer[] rs = new FailingConsumer[6];
2639 +        for (int i = 0; i < rs.length; i++) rs[i] = new FailingConsumer(m);
2640 +
2641 +        final CompletableFuture<Void> h0 = m.acceptEither(f, g, rs[0]);
2642 +        final CompletableFuture<Void> h1 = m.acceptEither(g, f, rs[1]);
2643 +        f.complete(v1);
2644 +        final CompletableFuture<Void> h2 = m.acceptEither(f, g, rs[2]);
2645 +        final CompletableFuture<Void> h3 = m.acceptEither(g, f, rs[3]);
2646 +        checkCompletedWithWrappedCFException(h0);
2647 +        checkCompletedWithWrappedCFException(h1);
2648 +        checkCompletedWithWrappedCFException(h2);
2649 +        checkCompletedWithWrappedCFException(h3);
2650 +        for (int i = 0; i < 4; i++) rs[i].assertValue(v1);
2651 +
2652 +        g.complete(v2);
2653 +
2654 +        // unspecified behavior - both source completions available
2655 +        final CompletableFuture<Void> h4 = m.acceptEither(f, g, rs[4]);
2656 +        final CompletableFuture<Void> h5 = m.acceptEither(g, f, rs[5]);
2657 +
2658 +        checkCompletedWithWrappedCFException(h4);
2659 +        assertTrue(Objects.equals(v1, rs[4].value) ||
2660 +                   Objects.equals(v2, rs[4].value));
2661 +        checkCompletedWithWrappedCFException(h5);
2662 +        assertTrue(Objects.equals(v1, rs[5].value) ||
2663 +                   Objects.equals(v2, rs[5].value));
2664 +
2665 +        checkCompletedNormally(f, v1);
2666 +        checkCompletedNormally(g, v2);
2667 +    }}
2668 +
2669 +    /**
2670 +     * runAfterEither result completes normally after normal completion
2671 +     * of either source
2672 +     */
2673 +    public void testRunAfterEither_normalCompletion() {
2674 +        for (ExecutionMode m : ExecutionMode.values())
2675 +        for (Integer v1 : new Integer[] { 1, null })
2676 +        for (Integer v2 : new Integer[] { 2, null })
2677 +    {
2678 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2679 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2680 +        final Noop[] rs = new Noop[6];
2681 +        for (int i = 0; i < rs.length; i++) rs[i] = new Noop(m);
2682 +
2683 +        final CompletableFuture<Void> h0 = m.runAfterEither(f, g, rs[0]);
2684 +        final CompletableFuture<Void> h1 = m.runAfterEither(g, f, rs[1]);
2685 +        checkIncomplete(h0);
2686 +        checkIncomplete(h1);
2687 +        rs[0].assertNotInvoked();
2688 +        rs[1].assertNotInvoked();
2689 +        f.complete(v1);
2690 +        checkCompletedNormally(h0, null);
2691 +        checkCompletedNormally(h1, null);
2692 +        rs[0].assertInvoked();
2693 +        rs[1].assertInvoked();
2694 +        final CompletableFuture<Void> h2 = m.runAfterEither(f, g, rs[2]);
2695 +        final CompletableFuture<Void> h3 = m.runAfterEither(g, f, rs[3]);
2696 +        checkCompletedNormally(h2, null);
2697 +        checkCompletedNormally(h3, null);
2698 +        rs[2].assertInvoked();
2699 +        rs[3].assertInvoked();
2700 +
2701 +        g.complete(v2);
2702 +
2703 +        final CompletableFuture<Void> h4 = m.runAfterEither(f, g, rs[4]);
2704 +        final CompletableFuture<Void> h5 = m.runAfterEither(g, f, rs[5]);
2705 +
2706 +        checkCompletedNormally(f, v1);
2707 +        checkCompletedNormally(g, v2);
2708 +        checkCompletedNormally(h0, null);
2709 +        checkCompletedNormally(h1, null);
2710 +        checkCompletedNormally(h2, null);
2711 +        checkCompletedNormally(h3, null);
2712 +        checkCompletedNormally(h4, null);
2713 +        checkCompletedNormally(h5, null);
2714 +        for (int i = 0; i < 6; i++) rs[i].assertInvoked();
2715 +    }}
2716 +
2717 +    /**
2718 +     * runAfterEither result completes exceptionally after exceptional
2719 +     * completion of either source
2720 +     */
2721 +    public void testRunAfterEither_exceptionalCompletion() {
2722 +        for (ExecutionMode m : ExecutionMode.values())
2723 +        for (Integer v1 : new Integer[] { 1, null })
2724 +    {
2725 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2726 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2727 +        final CFException ex = new CFException();
2728 +        final Noop[] rs = new Noop[6];
2729 +        for (int i = 0; i < rs.length; i++) rs[i] = new Noop(m);
2730 +
2731 +        final CompletableFuture<Void> h0 = m.runAfterEither(f, g, rs[0]);
2732 +        final CompletableFuture<Void> h1 = m.runAfterEither(g, f, rs[1]);
2733 +        checkIncomplete(h0);
2734 +        checkIncomplete(h1);
2735 +        rs[0].assertNotInvoked();
2736 +        rs[1].assertNotInvoked();
2737 +        assertTrue(f.completeExceptionally(ex));
2738 +        checkCompletedWithWrappedException(h0, ex);
2739 +        checkCompletedWithWrappedException(h1, ex);
2740 +        final CompletableFuture<Void> h2 = m.runAfterEither(f, g, rs[2]);
2741 +        final CompletableFuture<Void> h3 = m.runAfterEither(g, f, rs[3]);
2742 +        checkCompletedWithWrappedException(h2, ex);
2743 +        checkCompletedWithWrappedException(h3, ex);
2744 +
2745 +        assertTrue(g.complete(v1));
2746 +
2747 +        // unspecified behavior - both source completions available
2748 +        final CompletableFuture<Void> h4 = m.runAfterEither(f, g, rs[4]);
2749 +        final CompletableFuture<Void> h5 = m.runAfterEither(g, f, rs[5]);
2750 +        try {
2751 +            assertNull(h4.join());
2752 +            rs[4].assertInvoked();
2753 +        } catch (CompletionException ok) {
2754 +            checkCompletedWithWrappedException(h4, ex);
2755 +            rs[4].assertNotInvoked();
2756 +        }
2757 +        try {
2758 +            assertNull(h5.join());
2759 +            rs[5].assertInvoked();
2760 +        } catch (CompletionException ok) {
2761 +            checkCompletedWithWrappedException(h5, ex);
2762 +            rs[5].assertNotInvoked();
2763 +        }
2764 +
2765 +        checkCompletedExceptionally(f, ex);
2766 +        checkCompletedNormally(g, v1);
2767 +        checkCompletedWithWrappedException(h0, ex);
2768 +        checkCompletedWithWrappedException(h1, ex);
2769 +        checkCompletedWithWrappedException(h2, ex);
2770 +        checkCompletedWithWrappedException(h3, ex);
2771 +        checkCompletedWithWrappedException(h4, ex);
2772 +        for (int i = 0; i < 4; i++) rs[i].assertNotInvoked();
2773 +    }}
2774 +
2775 +    public void testRunAfterEither_exceptionalCompletion2() {
2776 +        for (ExecutionMode m : ExecutionMode.values())
2777 +        for (boolean fFirst : new boolean[] { true, false })
2778 +        for (Integer v1 : new Integer[] { 1, null })
2779 +    {
2780 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2781 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2782 +        final CFException ex = new CFException();
2783 +        final Noop[] rs = new Noop[6];
2784 +        for (int i = 0; i < rs.length; i++) rs[i] = new Noop(m);
2785 +
2786 +        final CompletableFuture<Void> h0 = m.runAfterEither(f, g, rs[0]);
2787 +        final CompletableFuture<Void> h1 = m.runAfterEither(g, f, rs[1]);
2788 +        assertTrue( fFirst ? f.complete(v1) : g.completeExceptionally(ex));
2789 +        assertTrue(!fFirst ? f.complete(v1) : g.completeExceptionally(ex));
2790 +        final CompletableFuture<Void> h2 = m.runAfterEither(f, g, rs[2]);
2791 +        final CompletableFuture<Void> h3 = m.runAfterEither(g, f, rs[3]);
2792 +
2793 +        // unspecified behavior - both source completions available
2794 +        try {
2795 +            assertEquals(null, h0.join());
2796 +            rs[0].assertInvoked();
2797 +        } catch (CompletionException ok) {
2798 +            checkCompletedWithWrappedException(h0, ex);
2799 +            rs[0].assertNotInvoked();
2800 +        }
2801 +        try {
2802 +            assertEquals(null, h1.join());
2803 +            rs[1].assertInvoked();
2804 +        } catch (CompletionException ok) {
2805 +            checkCompletedWithWrappedException(h1, ex);
2806 +            rs[1].assertNotInvoked();
2807 +        }
2808 +        try {
2809 +            assertEquals(null, h2.join());
2810 +            rs[2].assertInvoked();
2811 +        } catch (CompletionException ok) {
2812 +            checkCompletedWithWrappedException(h2, ex);
2813 +            rs[2].assertNotInvoked();
2814 +        }
2815 +        try {
2816 +            assertEquals(null, h3.join());
2817 +            rs[3].assertInvoked();
2818 +        } catch (CompletionException ok) {
2819 +            checkCompletedWithWrappedException(h3, ex);
2820 +            rs[3].assertNotInvoked();
2821 +        }
2822 +
2823 +        checkCompletedNormally(f, v1);
2824 +        checkCompletedExceptionally(g, ex);
2825 +    }}
2826 +
2827 +    /**
2828 +     * runAfterEither result completes exceptionally if either source cancelled
2829 +     */
2830 +    public void testRunAfterEither_sourceCancelled() {
2831 +        for (ExecutionMode m : ExecutionMode.values())
2832 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2833 +        for (Integer v1 : new Integer[] { 1, null })
2834 +    {
2835 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2836 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2837 +        final Noop[] rs = new Noop[6];
2838 +        for (int i = 0; i < rs.length; i++) rs[i] = new Noop(m);
2839 +
2840 +        final CompletableFuture<Void> h0 = m.runAfterEither(f, g, rs[0]);
2841 +        final CompletableFuture<Void> h1 = m.runAfterEither(g, f, rs[1]);
2842 +        checkIncomplete(h0);
2843 +        checkIncomplete(h1);
2844 +        rs[0].assertNotInvoked();
2845 +        rs[1].assertNotInvoked();
2846 +        f.cancel(mayInterruptIfRunning);
2847 +        checkCompletedWithWrappedCancellationException(h0);
2848 +        checkCompletedWithWrappedCancellationException(h1);
2849 +        final CompletableFuture<Void> h2 = m.runAfterEither(f, g, rs[2]);
2850 +        final CompletableFuture<Void> h3 = m.runAfterEither(g, f, rs[3]);
2851 +        checkCompletedWithWrappedCancellationException(h2);
2852 +        checkCompletedWithWrappedCancellationException(h3);
2853 +
2854 +        assertTrue(g.complete(v1));
2855 +
2856 +        // unspecified behavior - both source completions available
2857 +        final CompletableFuture<Void> h4 = m.runAfterEither(f, g, rs[4]);
2858 +        final CompletableFuture<Void> h5 = m.runAfterEither(g, f, rs[5]);
2859 +        try {
2860 +            assertNull(h4.join());
2861 +            rs[4].assertInvoked();
2862 +        } catch (CompletionException ok) {
2863 +            checkCompletedWithWrappedCancellationException(h4);
2864 +            rs[4].assertNotInvoked();
2865 +        }
2866 +        try {
2867 +            assertNull(h5.join());
2868 +            rs[5].assertInvoked();
2869 +        } catch (CompletionException ok) {
2870 +            checkCompletedWithWrappedCancellationException(h5);
2871 +            rs[5].assertNotInvoked();
2872 +        }
2873 +
2874 +        checkCancelled(f);
2875 +        checkCompletedNormally(g, v1);
2876 +        checkCompletedWithWrappedCancellationException(h0);
2877 +        checkCompletedWithWrappedCancellationException(h1);
2878 +        checkCompletedWithWrappedCancellationException(h2);
2879 +        checkCompletedWithWrappedCancellationException(h3);
2880 +        for (int i = 0; i < 4; i++) rs[i].assertNotInvoked();
2881 +    }}
2882 +
2883 +    /**
2884 +     * runAfterEither result completes exceptionally if action does
2885 +     */
2886 +    public void testRunAfterEither_actionFailed() {
2887 +        for (ExecutionMode m : ExecutionMode.values())
2888 +        for (Integer v1 : new Integer[] { 1, null })
2889 +        for (Integer v2 : new Integer[] { 2, null })
2890 +    {
2891 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2892 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2893 +        final FailingRunnable[] rs = new FailingRunnable[6];
2894 +        for (int i = 0; i < rs.length; i++) rs[i] = new FailingRunnable(m);
2895 +
2896 +        final CompletableFuture<Void> h0 = m.runAfterEither(f, g, rs[0]);
2897 +        final CompletableFuture<Void> h1 = m.runAfterEither(g, f, rs[1]);
2898 +        assertTrue(f.complete(v1));
2899 +        final CompletableFuture<Void> h2 = m.runAfterEither(f, g, rs[2]);
2900 +        final CompletableFuture<Void> h3 = m.runAfterEither(g, f, rs[3]);
2901 +        checkCompletedWithWrappedCFException(h0);
2902 +        checkCompletedWithWrappedCFException(h1);
2903 +        checkCompletedWithWrappedCFException(h2);
2904 +        checkCompletedWithWrappedCFException(h3);
2905 +        for (int i = 0; i < 4; i++) rs[i].assertInvoked();
2906 +        assertTrue(g.complete(v2));
2907 +        final CompletableFuture<Void> h4 = m.runAfterEither(f, g, rs[4]);
2908 +        final CompletableFuture<Void> h5 = m.runAfterEither(g, f, rs[5]);
2909 +        checkCompletedWithWrappedCFException(h4);
2910 +        checkCompletedWithWrappedCFException(h5);
2911 +
2912 +        checkCompletedNormally(f, v1);
2913 +        checkCompletedNormally(g, v2);
2914 +        for (int i = 0; i < 6; i++) rs[i].assertInvoked();
2915 +    }}
2916 +
2917 +    /**
2918 +     * thenCompose result completes normally after normal completion of source
2919 +     */
2920 +    public void testThenCompose_normalCompletion() {
2921 +        for (ExecutionMode m : ExecutionMode.values())
2922 +        for (boolean createIncomplete : new boolean[] { true, false })
2923 +        for (Integer v1 : new Integer[] { 1, null })
2924 +    {
2925 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2926 +        final CompletableFutureInc r = new CompletableFutureInc(m);
2927 +        if (!createIncomplete) assertTrue(f.complete(v1));
2928 +        final CompletableFuture<Integer> g = m.thenCompose(f, r);
2929 +        if (createIncomplete) assertTrue(f.complete(v1));
2930 +
2931 +        checkCompletedNormally(g, inc(v1));
2932 +        checkCompletedNormally(f, v1);
2933 +        r.assertValue(v1);
2934 +    }}
2935 +
2936 +    /**
2937 +     * thenCompose result completes exceptionally after exceptional
2938 +     * completion of source
2939 +     */
2940 +    public void testThenCompose_exceptionalCompletion() {
2941 +        for (ExecutionMode m : ExecutionMode.values())
2942 +        for (boolean createIncomplete : new boolean[] { true, false })
2943 +    {
2944 +        final CFException ex = new CFException();
2945 +        final CompletableFutureInc r = new CompletableFutureInc(m);
2946 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2947 +        if (!createIncomplete) f.completeExceptionally(ex);
2948 +        final CompletableFuture<Integer> g = m.thenCompose(f, r);
2949 +        if (createIncomplete) f.completeExceptionally(ex);
2950 +
2951 +        checkCompletedWithWrappedException(g, ex);
2952 +        checkCompletedExceptionally(f, ex);
2953 +        r.assertNotInvoked();
2954 +    }}
2955 +
2956 +    /**
2957 +     * thenCompose result completes exceptionally if action does
2958 +     */
2959 +    public void testThenCompose_actionFailed() {
2960 +        for (ExecutionMode m : ExecutionMode.values())
2961 +        for (boolean createIncomplete : new boolean[] { true, false })
2962 +        for (Integer v1 : new Integer[] { 1, null })
2963 +    {
2964 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2965 +        final FailingCompletableFutureFunction r
2966 +            = new FailingCompletableFutureFunction(m);
2967 +        if (!createIncomplete) assertTrue(f.complete(v1));
2968 +        final CompletableFuture<Integer> g = m.thenCompose(f, r);
2969 +        if (createIncomplete) assertTrue(f.complete(v1));
2970 +
2971 +        checkCompletedWithWrappedCFException(g);
2972 +        checkCompletedNormally(f, v1);
2973 +    }}
2974 +
2975 +    /**
2976 +     * thenCompose result completes exceptionally if source cancelled
2977 +     */
2978 +    public void testThenCompose_sourceCancelled() {
2979 +        for (ExecutionMode m : ExecutionMode.values())
2980 +        for (boolean createIncomplete : new boolean[] { true, false })
2981 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2982 +    {
2983 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2984 +        final CompletableFutureInc r = new CompletableFutureInc(m);
2985 +        if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
2986 +        final CompletableFuture<Integer> g = m.thenCompose(f, r);
2987 +        if (createIncomplete) {
2988 +            checkIncomplete(g);
2989 +            assertTrue(f.cancel(mayInterruptIfRunning));
2990 +        }
2991 +
2992 +        checkCompletedWithWrappedCancellationException(g);
2993 +        checkCancelled(f);
2994 +    }}
2995 +
2996 +    /**
2997 +     * thenCompose result completes exceptionally if the result of the action does
2998 +     */
2999 +    public void testThenCompose_actionReturnsFailingFuture() {
3000 +        for (ExecutionMode m : ExecutionMode.values())
3001 +        for (int order = 0; order < 6; order++)
3002 +        for (Integer v1 : new Integer[] { 1, null })
3003 +    {
3004 +        final CFException ex = new CFException();
3005 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
3006 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
3007 +        final CompletableFuture<Integer> h;
3008 +        // Test all permutations of orders
3009 +        switch (order) {
3010 +        case 0:
3011 +            assertTrue(f.complete(v1));
3012 +            assertTrue(g.completeExceptionally(ex));
3013 +            h = m.thenCompose(f, (x -> g));
3014 +            break;
3015 +        case 1:
3016 +            assertTrue(f.complete(v1));
3017 +            h = m.thenCompose(f, (x -> g));
3018 +            assertTrue(g.completeExceptionally(ex));
3019 +            break;
3020 +        case 2:
3021 +            assertTrue(g.completeExceptionally(ex));
3022 +            assertTrue(f.complete(v1));
3023 +            h = m.thenCompose(f, (x -> g));
3024 +            break;
3025 +        case 3:
3026 +            assertTrue(g.completeExceptionally(ex));
3027 +            h = m.thenCompose(f, (x -> g));
3028 +            assertTrue(f.complete(v1));
3029 +            break;
3030 +        case 4:
3031 +            h = m.thenCompose(f, (x -> g));
3032 +            assertTrue(f.complete(v1));
3033 +            assertTrue(g.completeExceptionally(ex));
3034 +            break;
3035 +        case 5:
3036 +            h = m.thenCompose(f, (x -> g));
3037 +            assertTrue(f.complete(v1));
3038 +            assertTrue(g.completeExceptionally(ex));
3039 +            break;
3040 +        default: throw new AssertionError();
3041 +        }
3042 +
3043 +        checkCompletedExceptionally(g, ex);
3044 +        checkCompletedWithWrappedException(h, ex);
3045 +        checkCompletedNormally(f, v1);
3046 +    }}
3047 +
3048 +    // other static methods
3049 +
3050 +    /**
3051 +     * allOf(no component futures) returns a future completed normally
3052 +     * with the value null
3053 +     */
3054 +    public void testAllOf_empty() throws Exception {
3055 +        CompletableFuture<Void> f = CompletableFuture.allOf();
3056 +        checkCompletedNormally(f, null);
3057 +    }
3058 +
3059 +    /**
3060 +     * allOf returns a future completed normally with the value null
3061 +     * when all components complete normally
3062 +     */
3063 +    public void testAllOf_normal() throws Exception {
3064 +        for (int k = 1; k < 10; k++) {
3065 +            CompletableFuture<Integer>[] fs
3066 +                = (CompletableFuture<Integer>[]) new CompletableFuture[k];
3067 +            for (int i = 0; i < k; i++)
3068 +                fs[i] = new CompletableFuture<>();
3069 +            CompletableFuture<Void> f = CompletableFuture.allOf(fs);
3070 +            for (int i = 0; i < k; i++) {
3071 +                checkIncomplete(f);
3072 +                checkIncomplete(CompletableFuture.allOf(fs));
3073 +                fs[i].complete(one);
3074 +            }
3075 +            checkCompletedNormally(f, null);
3076 +            checkCompletedNormally(CompletableFuture.allOf(fs), null);
3077 +        }
3078 +    }
3079 +
3080 +    public void testAllOf_backwards() throws Exception {
3081 +        for (int k = 1; k < 10; k++) {
3082 +            CompletableFuture<Integer>[] fs
3083 +                = (CompletableFuture<Integer>[]) new CompletableFuture[k];
3084 +            for (int i = 0; i < k; i++)
3085 +                fs[i] = new CompletableFuture<>();
3086 +            CompletableFuture<Void> f = CompletableFuture.allOf(fs);
3087 +            for (int i = k - 1; i >= 0; i--) {
3088 +                checkIncomplete(f);
3089 +                checkIncomplete(CompletableFuture.allOf(fs));
3090 +                fs[i].complete(one);
3091 +            }
3092 +            checkCompletedNormally(f, null);
3093 +            checkCompletedNormally(CompletableFuture.allOf(fs), null);
3094 +        }
3095 +    }
3096 +
3097 +    public void testAllOf_exceptional() throws Exception {
3098 +        for (int k = 1; k < 10; k++) {
3099 +            CompletableFuture<Integer>[] fs
3100 +                = (CompletableFuture<Integer>[]) new CompletableFuture[k];
3101 +            CFException ex = new CFException();
3102 +            for (int i = 0; i < k; i++)
3103 +                fs[i] = new CompletableFuture<>();
3104 +            CompletableFuture<Void> f = CompletableFuture.allOf(fs);
3105 +            for (int i = 0; i < k; i++) {
3106 +                checkIncomplete(f);
3107 +                checkIncomplete(CompletableFuture.allOf(fs));
3108 +                if (i != k/2) {
3109 +                    fs[i].complete(i);
3110 +                    checkCompletedNormally(fs[i], i);
3111 +                } else {
3112 +                    fs[i].completeExceptionally(ex);
3113 +                    checkCompletedExceptionally(fs[i], ex);
3114 +                }
3115 +            }
3116 +            checkCompletedWithWrappedException(f, ex);
3117 +            checkCompletedWithWrappedException(CompletableFuture.allOf(fs), ex);
3118 +        }
3119 +    }
3120 +
3121 +    /**
3122 +     * anyOf(no component futures) returns an incomplete future
3123 +     */
3124 +    public void testAnyOf_empty() throws Exception {
3125 +        for (Integer v1 : new Integer[] { 1, null })
3126 +    {
3127 +        CompletableFuture<Object> f = CompletableFuture.anyOf();
3128 +        checkIncomplete(f);
3129 +
3130 +        f.complete(v1);
3131 +        checkCompletedNormally(f, v1);
3132 +    }}
3133 +
3134 +    /**
3135 +     * anyOf returns a future completed normally with a value when
3136 +     * a component future does
3137 +     */
3138 +    public void testAnyOf_normal() throws Exception {
3139 +        for (int k = 0; k < 10; k++) {
3140 +            CompletableFuture[] fs = new CompletableFuture[k];
3141 +            for (int i = 0; i < k; i++)
3142 +                fs[i] = new CompletableFuture<>();
3143 +            CompletableFuture<Object> f = CompletableFuture.anyOf(fs);
3144 +            checkIncomplete(f);
3145 +            for (int i = 0; i < k; i++) {
3146 +                fs[i].complete(i);
3147 +                checkCompletedNormally(f, 0);
3148 +                int x = (int) CompletableFuture.anyOf(fs).join();
3149 +                assertTrue(0 <= x && x <= i);
3150 +            }
3151 +        }
3152      }
3153 +    public void testAnyOf_normal_backwards() throws Exception {
3154 +        for (int k = 0; k < 10; k++) {
3155 +            CompletableFuture[] fs = new CompletableFuture[k];
3156 +            for (int i = 0; i < k; i++)
3157 +                fs[i] = new CompletableFuture<>();
3158 +            CompletableFuture<Object> f = CompletableFuture.anyOf(fs);
3159 +            checkIncomplete(f);
3160 +            for (int i = k - 1; i >= 0; i--) {
3161 +                fs[i].complete(i);
3162 +                checkCompletedNormally(f, k - 1);
3163 +                int x = (int) CompletableFuture.anyOf(fs).join();
3164 +                assertTrue(i <= x && x <= k - 1);
3165 +            }
3166 +        }
3167 +    }
3168 +
3169 +    /**
3170 +     * anyOf result completes exceptionally when any component does.
3171 +     */
3172 +    public void testAnyOf_exceptional() throws Exception {
3173 +        for (int k = 0; k < 10; k++) {
3174 +            CompletableFuture[] fs = new CompletableFuture[k];
3175 +            CFException[] exs = new CFException[k];
3176 +            for (int i = 0; i < k; i++) {
3177 +                fs[i] = new CompletableFuture<>();
3178 +                exs[i] = new CFException();
3179 +            }
3180 +            CompletableFuture<Object> f = CompletableFuture.anyOf(fs);
3181 +            checkIncomplete(f);
3182 +            for (int i = 0; i < k; i++) {
3183 +                fs[i].completeExceptionally(exs[i]);
3184 +                checkCompletedWithWrappedException(f, exs[0]);
3185 +                checkCompletedWithWrappedCFException(CompletableFuture.anyOf(fs));
3186 +            }
3187 +        }
3188 +    }
3189 +
3190 +    public void testAnyOf_exceptional_backwards() throws Exception {
3191 +        for (int k = 0; k < 10; k++) {
3192 +            CompletableFuture[] fs = new CompletableFuture[k];
3193 +            CFException[] exs = new CFException[k];
3194 +            for (int i = 0; i < k; i++) {
3195 +                fs[i] = new CompletableFuture<>();
3196 +                exs[i] = new CFException();
3197 +            }
3198 +            CompletableFuture<Object> f = CompletableFuture.anyOf(fs);
3199 +            checkIncomplete(f);
3200 +            for (int i = k - 1; i >= 0; i--) {
3201 +                fs[i].completeExceptionally(exs[i]);
3202 +                checkCompletedWithWrappedException(f, exs[k - 1]);
3203 +                checkCompletedWithWrappedCFException(CompletableFuture.anyOf(fs));
3204 +            }
3205 +        }
3206 +    }
3207 +
3208 +    /**
3209 +     * Completion methods throw NullPointerException with null arguments
3210 +     */
3211 +    public void testNPE() {
3212 +        CompletableFuture<Integer> f = new CompletableFuture<>();
3213 +        CompletableFuture<Integer> g = new CompletableFuture<>();
3214 +        CompletableFuture<Integer> nullFuture = (CompletableFuture<Integer>)null;
3215 +        CompletableFuture<?> h;
3216 +        ThreadExecutor exec = new ThreadExecutor();
3217 +
3218 +        Runnable[] throwingActions = {
3219 +            () -> CompletableFuture.supplyAsync(null),
3220 +            () -> CompletableFuture.supplyAsync(null, exec),
3221 +            () -> CompletableFuture.supplyAsync(new IntegerSupplier(ExecutionMode.SYNC, 42), null),
3222 +
3223 +            () -> CompletableFuture.runAsync(null),
3224 +            () -> CompletableFuture.runAsync(null, exec),
3225 +            () -> CompletableFuture.runAsync(() -> {}, null),
3226 +
3227 +            () -> f.completeExceptionally(null),
3228 +
3229 +            () -> f.thenApply(null),
3230 +            () -> f.thenApplyAsync(null),
3231 +            () -> f.thenApplyAsync((x) -> x, null),
3232 +            () -> f.thenApplyAsync(null, exec),
3233 +
3234 +            () -> f.thenAccept(null),
3235 +            () -> f.thenAcceptAsync(null),
3236 +            () -> f.thenAcceptAsync((x) -> {} , null),
3237 +            () -> f.thenAcceptAsync(null, exec),
3238 +
3239 +            () -> f.thenRun(null),
3240 +            () -> f.thenRunAsync(null),
3241 +            () -> f.thenRunAsync(() -> {} , null),
3242 +            () -> f.thenRunAsync(null, exec),
3243 +
3244 +            () -> f.thenCombine(g, null),
3245 +            () -> f.thenCombineAsync(g, null),
3246 +            () -> f.thenCombineAsync(g, null, exec),
3247 +            () -> f.thenCombine(nullFuture, (x, y) -> x),
3248 +            () -> f.thenCombineAsync(nullFuture, (x, y) -> x),
3249 +            () -> f.thenCombineAsync(nullFuture, (x, y) -> x, exec),
3250 +            () -> f.thenCombineAsync(g, (x, y) -> x, null),
3251 +
3252 +            () -> f.thenAcceptBoth(g, null),
3253 +            () -> f.thenAcceptBothAsync(g, null),
3254 +            () -> f.thenAcceptBothAsync(g, null, exec),
3255 +            () -> f.thenAcceptBoth(nullFuture, (x, y) -> {}),
3256 +            () -> f.thenAcceptBothAsync(nullFuture, (x, y) -> {}),
3257 +            () -> f.thenAcceptBothAsync(nullFuture, (x, y) -> {}, exec),
3258 +            () -> f.thenAcceptBothAsync(g, (x, y) -> {}, null),
3259 +
3260 +            () -> f.runAfterBoth(g, null),
3261 +            () -> f.runAfterBothAsync(g, null),
3262 +            () -> f.runAfterBothAsync(g, null, exec),
3263 +            () -> f.runAfterBoth(nullFuture, () -> {}),
3264 +            () -> f.runAfterBothAsync(nullFuture, () -> {}),
3265 +            () -> f.runAfterBothAsync(nullFuture, () -> {}, exec),
3266 +            () -> f.runAfterBothAsync(g, () -> {}, null),
3267 +
3268 +            () -> f.applyToEither(g, null),
3269 +            () -> f.applyToEitherAsync(g, null),
3270 +            () -> f.applyToEitherAsync(g, null, exec),
3271 +            () -> f.applyToEither(nullFuture, (x) -> x),
3272 +            () -> f.applyToEitherAsync(nullFuture, (x) -> x),
3273 +            () -> f.applyToEitherAsync(nullFuture, (x) -> x, exec),
3274 +            () -> f.applyToEitherAsync(g, (x) -> x, null),
3275 +
3276 +            () -> f.acceptEither(g, null),
3277 +            () -> f.acceptEitherAsync(g, null),
3278 +            () -> f.acceptEitherAsync(g, null, exec),
3279 +            () -> f.acceptEither(nullFuture, (x) -> {}),
3280 +            () -> f.acceptEitherAsync(nullFuture, (x) -> {}),
3281 +            () -> f.acceptEitherAsync(nullFuture, (x) -> {}, exec),
3282 +            () -> f.acceptEitherAsync(g, (x) -> {}, null),
3283 +
3284 +            () -> f.runAfterEither(g, null),
3285 +            () -> f.runAfterEitherAsync(g, null),
3286 +            () -> f.runAfterEitherAsync(g, null, exec),
3287 +            () -> f.runAfterEither(nullFuture, () -> {}),
3288 +            () -> f.runAfterEitherAsync(nullFuture, () -> {}),
3289 +            () -> f.runAfterEitherAsync(nullFuture, () -> {}, exec),
3290 +            () -> f.runAfterEitherAsync(g, () -> {}, null),
3291 +
3292 +            () -> f.thenCompose(null),
3293 +            () -> f.thenComposeAsync(null),
3294 +            () -> f.thenComposeAsync(new CompletableFutureInc(ExecutionMode.EXECUTOR), null),
3295 +            () -> f.thenComposeAsync(null, exec),
3296 +
3297 +            () -> f.exceptionally(null),
3298 +
3299 +            () -> f.handle(null),
3300 +
3301 +            () -> CompletableFuture.allOf((CompletableFuture<?>)null),
3302 +            () -> CompletableFuture.allOf((CompletableFuture<?>[])null),
3303 +            () -> CompletableFuture.allOf(f, null),
3304 +            () -> CompletableFuture.allOf(null, f),
3305 +
3306 +            () -> CompletableFuture.anyOf((CompletableFuture<?>)null),
3307 +            () -> CompletableFuture.anyOf((CompletableFuture<?>[])null),
3308 +            () -> CompletableFuture.anyOf(f, null),
3309 +            () -> CompletableFuture.anyOf(null, f),
3310 +
3311 +            () -> f.obtrudeException(null),
3312 +        };
3313 +
3314 +        assertThrows(NullPointerException.class, throwingActions);
3315 +        assertEquals(0, exec.count.get());
3316 +    }
3317 +
3318 +    /**
3319 +     * toCompletableFuture returns this CompletableFuture.
3320 +     */
3321 +    public void testToCompletableFuture() {
3322 +        CompletableFuture<Integer> f = new CompletableFuture<>();
3323 +        assertSame(f, f.toCompletableFuture());
3324 +    }
3325 +
3326 +    //--- tests of implementation details; not part of official tck ---
3327 +
3328 +    Object resultOf(CompletableFuture<?> f) {
3329 +        try {
3330 +            java.lang.reflect.Field resultField
3331 +                = CompletableFuture.class.getDeclaredField("result");
3332 +            resultField.setAccessible(true);
3333 +            return resultField.get(f);
3334 +        } catch (Throwable t) { throw new AssertionError(t); }
3335 +    }
3336 +
3337 +    public void testExceptionPropagationReusesResultObject() {
3338 +        if (!testImplementationDetails) return;
3339 +        for (ExecutionMode m : ExecutionMode.values())
3340 +    {
3341 +        final CFException ex = new CFException();
3342 +        final CompletableFuture<Integer> v42 = CompletableFuture.completedFuture(42);
3343 +        final CompletableFuture<Integer> incomplete = new CompletableFuture<>();
3344 +
3345 +        List<Function<CompletableFuture<Integer>, CompletableFuture<?>>> funs
3346 +            = new ArrayList<>();
3347 +
3348 +        funs.add((y) -> m.thenRun(y, new Noop(m)));
3349 +        funs.add((y) -> m.thenAccept(y, new NoopConsumer(m)));
3350 +        funs.add((y) -> m.thenApply(y, new IncFunction(m)));
3351 +
3352 +        funs.add((y) -> m.runAfterEither(y, incomplete, new Noop(m)));
3353 +        funs.add((y) -> m.acceptEither(y, incomplete, new NoopConsumer(m)));
3354 +        funs.add((y) -> m.applyToEither(y, incomplete, new IncFunction(m)));
3355 +
3356 +        funs.add((y) -> m.runAfterBoth(y, v42, new Noop(m)));
3357 +        funs.add((y) -> m.thenAcceptBoth(y, v42, new SubtractAction(m)));
3358 +        funs.add((y) -> m.thenCombine(y, v42, new SubtractFunction(m)));
3359 +
3360 +        funs.add((y) -> m.whenComplete(y, (Integer x, Throwable t) -> {}));
3361 +
3362 +        funs.add((y) -> m.thenCompose(y, new CompletableFutureInc(m)));
3363 +
3364 +        funs.add((y) -> CompletableFuture.allOf(new CompletableFuture<?>[] {y, v42}));
3365 +        funs.add((y) -> CompletableFuture.anyOf(new CompletableFuture<?>[] {y, incomplete}));
3366 +
3367 +        for (Function<CompletableFuture<Integer>, CompletableFuture<?>>
3368 +                 fun : funs) {
3369 +            CompletableFuture<Integer> f = new CompletableFuture<>();
3370 +            f.completeExceptionally(ex);
3371 +            CompletableFuture<Integer> src = m.thenApply(f, new IncFunction(m));
3372 +            checkCompletedWithWrappedException(src, ex);
3373 +            CompletableFuture<?> dep = fun.apply(src);
3374 +            checkCompletedWithWrappedException(dep, ex);
3375 +            assertSame(resultOf(src), resultOf(dep));
3376 +        }
3377 +
3378 +        for (Function<CompletableFuture<Integer>, CompletableFuture<?>>
3379 +                 fun : funs) {
3380 +            CompletableFuture<Integer> f = new CompletableFuture<>();
3381 +            CompletableFuture<Integer> src = m.thenApply(f, new IncFunction(m));
3382 +            CompletableFuture<?> dep = fun.apply(src);
3383 +            f.completeExceptionally(ex);
3384 +            checkCompletedWithWrappedException(src, ex);
3385 +            checkCompletedWithWrappedException(dep, ex);
3386 +            assertSame(resultOf(src), resultOf(dep));
3387 +        }
3388 +
3389 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
3390 +        for (Function<CompletableFuture<Integer>, CompletableFuture<?>>
3391 +                 fun : funs) {
3392 +            CompletableFuture<Integer> f = new CompletableFuture<>();
3393 +            f.cancel(mayInterruptIfRunning);
3394 +            checkCancelled(f);
3395 +            CompletableFuture<Integer> src = m.thenApply(f, new IncFunction(m));
3396 +            checkCompletedWithWrappedCancellationException(src);
3397 +            CompletableFuture<?> dep = fun.apply(src);
3398 +            checkCompletedWithWrappedCancellationException(dep);
3399 +            assertSame(resultOf(src), resultOf(dep));
3400 +        }
3401 +
3402 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
3403 +        for (Function<CompletableFuture<Integer>, CompletableFuture<?>>
3404 +                 fun : funs) {
3405 +            CompletableFuture<Integer> f = new CompletableFuture<>();
3406 +            CompletableFuture<Integer> src = m.thenApply(f, new IncFunction(m));
3407 +            CompletableFuture<?> dep = fun.apply(src);
3408 +            f.cancel(mayInterruptIfRunning);
3409 +            checkCancelled(f);
3410 +            checkCompletedWithWrappedCancellationException(src);
3411 +            checkCompletedWithWrappedCancellationException(dep);
3412 +            assertSame(resultOf(src), resultOf(dep));
3413 +        }
3414 +    }}
3415 +
3416   }

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