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Comparing jsr166/src/test/tck/CompletableFutureTest.java (file contents):
Revision 1.3 by jsr166, Sat Feb 9 19:33:08 2013 UTC vs.
Revision 1.95 by jsr166, Wed Jun 25 15:32:10 2014 UTC

# Line 1 | Line 1
1   /*
2 < * Written by Doug Lea with assistance from members of JCP JSR-166
3 < * Expert Group and released to the public domain, as explained at
2 > * Written by Doug Lea and Martin Buchholz with assistance from
3 > * members of JCP JSR-166 Expert Group and released to the public
4 > * domain, as explained at
5   * http://creativecommons.org/publicdomain/zero/1.0/
5 * Other contributors include Andrew Wright, Jeffrey Hayes,
6 * Pat Fisher, Mike Judd.
6   */
7  
8   import junit.framework.*;
9   import java.util.concurrent.Callable;
10 + import java.util.concurrent.Executor;
11 + import java.util.concurrent.ExecutorService;
12 + import java.util.concurrent.Executors;
13   import java.util.concurrent.CancellationException;
14   import java.util.concurrent.CountDownLatch;
15   import java.util.concurrent.ExecutionException;
16   import java.util.concurrent.Future;
17   import java.util.concurrent.CompletableFuture;
18 + import java.util.concurrent.CompletionException;
19 + import java.util.concurrent.CompletionStage;
20 + import java.util.concurrent.ForkJoinPool;
21 + import java.util.concurrent.ForkJoinTask;
22   import java.util.concurrent.TimeoutException;
23   import java.util.concurrent.atomic.AtomicInteger;
24   import static java.util.concurrent.TimeUnit.MILLISECONDS;
25   import static java.util.concurrent.TimeUnit.SECONDS;
26   import java.util.*;
27 + import java.util.function.Supplier;
28 + import java.util.function.Consumer;
29 + import java.util.function.BiConsumer;
30 + import java.util.function.Function;
31 + import java.util.function.BiFunction;
32  
33   public class CompletableFutureTest extends JSR166TestCase {
34  
# Line 28 | Line 39 | public class CompletableFutureTest exten
39          return new TestSuite(CompletableFutureTest.class);
40      }
41  
42 <    // XXXX Just a skeleton implementation for now.
43 <    public void testTODO() {
44 <        fail("Please add some real tests!");
42 >    static class CFException extends RuntimeException {}
43 >
44 >    void checkIncomplete(CompletableFuture<?> f) {
45 >        assertFalse(f.isDone());
46 >        assertFalse(f.isCancelled());
47 >        assertTrue(f.toString().contains("[Not completed]"));
48 >        try {
49 >            assertNull(f.getNow(null));
50 >        } catch (Throwable fail) { threadUnexpectedException(fail); }
51 >        try {
52 >            f.get(0L, SECONDS);
53 >            shouldThrow();
54 >        }
55 >        catch (TimeoutException success) {}
56 >        catch (Throwable fail) { threadUnexpectedException(fail); }
57 >    }
58 >
59 >    <T> void checkCompletedNormally(CompletableFuture<T> f, T value) {
60 >        checkTimedGet(f, value);
61 >
62 >        try {
63 >            assertEquals(value, f.join());
64 >        } catch (Throwable fail) { threadUnexpectedException(fail); }
65 >        try {
66 >            assertEquals(value, f.getNow(null));
67 >        } catch (Throwable fail) { threadUnexpectedException(fail); }
68 >        try {
69 >            assertEquals(value, f.get());
70 >        } catch (Throwable fail) { threadUnexpectedException(fail); }
71 >        assertTrue(f.isDone());
72 >        assertFalse(f.isCancelled());
73 >        assertFalse(f.isCompletedExceptionally());
74 >        assertTrue(f.toString().contains("[Completed normally]"));
75 >    }
76 >
77 >    void checkCompletedWithWrappedCFException(CompletableFuture<?> f) {
78 >        long startTime = System.nanoTime();
79 >        long timeoutMillis = LONG_DELAY_MS;
80 >        try {
81 >            f.get(timeoutMillis, MILLISECONDS);
82 >            shouldThrow();
83 >        } catch (ExecutionException success) {
84 >            assertTrue(success.getCause() instanceof CFException);
85 >        } catch (Throwable fail) { threadUnexpectedException(fail); }
86 >        assertTrue(millisElapsedSince(startTime) < timeoutMillis/2);
87 >
88 >        try {
89 >            f.join();
90 >            shouldThrow();
91 >        } catch (CompletionException success) {
92 >            assertTrue(success.getCause() instanceof CFException);
93 >        }
94 >        try {
95 >            f.getNow(null);
96 >            shouldThrow();
97 >        } catch (CompletionException success) {
98 >            assertTrue(success.getCause() instanceof CFException);
99 >        }
100 >        try {
101 >            f.get();
102 >            shouldThrow();
103 >        } catch (ExecutionException success) {
104 >            assertTrue(success.getCause() instanceof CFException);
105 >        } catch (Throwable fail) { threadUnexpectedException(fail); }
106 >        assertTrue(f.isDone());
107 >        assertFalse(f.isCancelled());
108 >        assertTrue(f.toString().contains("[Completed exceptionally]"));
109 >    }
110 >
111 >    <U> void checkCompletedExceptionallyWithRootCause(CompletableFuture<U> f,
112 >                                                      Throwable ex) {
113 >        long startTime = System.nanoTime();
114 >        long timeoutMillis = LONG_DELAY_MS;
115 >        try {
116 >            f.get(timeoutMillis, MILLISECONDS);
117 >            shouldThrow();
118 >        } catch (ExecutionException success) {
119 >            assertSame(ex, success.getCause());
120 >        } catch (Throwable fail) { threadUnexpectedException(fail); }
121 >        assertTrue(millisElapsedSince(startTime) < timeoutMillis/2);
122 >
123 >        try {
124 >            f.join();
125 >            shouldThrow();
126 >        } catch (CompletionException success) {
127 >            assertSame(ex, success.getCause());
128 >        }
129 >        try {
130 >            f.getNow(null);
131 >            shouldThrow();
132 >        } catch (CompletionException success) {
133 >            assertSame(ex, success.getCause());
134 >        }
135 >        try {
136 >            f.get();
137 >            shouldThrow();
138 >        } catch (ExecutionException success) {
139 >            assertSame(ex, success.getCause());
140 >        } catch (Throwable fail) { threadUnexpectedException(fail); }
141 >
142 >        assertTrue(f.isDone());
143 >        assertFalse(f.isCancelled());
144 >        assertTrue(f.toString().contains("[Completed exceptionally]"));
145 >    }
146 >
147 >    <U> void checkCompletedWithWrappedException(CompletableFuture<U> f,
148 >                                                Throwable ex) {
149 >        checkCompletedExceptionallyWithRootCause(f, ex);
150 >        try {
151 >            CompletableFuture<Throwable> spy = f.handle
152 >                ((U u, Throwable t) -> t);
153 >            assertTrue(spy.join() instanceof CompletionException);
154 >            assertSame(ex, spy.join().getCause());
155 >        } catch (Throwable fail) { threadUnexpectedException(fail); }
156      }
157  
158 +    <U> void checkCompletedExceptionally(CompletableFuture<U> f, Throwable ex) {
159 +        checkCompletedExceptionallyWithRootCause(f, ex);
160 +        try {
161 +            CompletableFuture<Throwable> spy = f.handle
162 +                ((U u, Throwable t) -> t);
163 +            assertSame(ex, spy.join());
164 +        } catch (Throwable fail) { threadUnexpectedException(fail); }
165 +    }
166 +
167 +    void checkCancelled(CompletableFuture<?> f) {
168 +        long startTime = System.nanoTime();
169 +        long timeoutMillis = LONG_DELAY_MS;
170 +        try {
171 +            f.get(timeoutMillis, MILLISECONDS);
172 +            shouldThrow();
173 +        } catch (CancellationException success) {
174 +        } catch (Throwable fail) { threadUnexpectedException(fail); }
175 +        assertTrue(millisElapsedSince(startTime) < timeoutMillis/2);
176 +
177 +        try {
178 +            f.join();
179 +            shouldThrow();
180 +        } catch (CancellationException success) {}
181 +        try {
182 +            f.getNow(null);
183 +            shouldThrow();
184 +        } catch (CancellationException success) {}
185 +        try {
186 +            f.get();
187 +            shouldThrow();
188 +        } catch (CancellationException success) {
189 +        } catch (Throwable fail) { threadUnexpectedException(fail); }
190 +        assertTrue(f.isDone());
191 +        assertTrue(f.isCompletedExceptionally());
192 +        assertTrue(f.isCancelled());
193 +        assertTrue(f.toString().contains("[Completed exceptionally]"));
194 +    }
195 +
196 +    void checkCompletedWithWrappedCancellationException(CompletableFuture<?> f) {
197 +        long startTime = System.nanoTime();
198 +        long timeoutMillis = LONG_DELAY_MS;
199 +        try {
200 +            f.get(timeoutMillis, MILLISECONDS);
201 +            shouldThrow();
202 +        } catch (ExecutionException success) {
203 +            assertTrue(success.getCause() instanceof CancellationException);
204 +        } catch (Throwable fail) { threadUnexpectedException(fail); }
205 +        assertTrue(millisElapsedSince(startTime) < timeoutMillis/2);
206 +
207 +        try {
208 +            f.join();
209 +            shouldThrow();
210 +        } catch (CompletionException success) {
211 +            assertTrue(success.getCause() instanceof CancellationException);
212 +        }
213 +        try {
214 +            f.getNow(null);
215 +            shouldThrow();
216 +        } catch (CompletionException success) {
217 +            assertTrue(success.getCause() instanceof CancellationException);
218 +        }
219 +        try {
220 +            f.get();
221 +            shouldThrow();
222 +        } catch (ExecutionException success) {
223 +            assertTrue(success.getCause() instanceof CancellationException);
224 +        } catch (Throwable fail) { threadUnexpectedException(fail); }
225 +        assertTrue(f.isDone());
226 +        assertFalse(f.isCancelled());
227 +        assertTrue(f.isCompletedExceptionally());
228 +        assertTrue(f.toString().contains("[Completed exceptionally]"));
229 +    }
230 +
231 +    /**
232 +     * A newly constructed CompletableFuture is incomplete, as indicated
233 +     * by methods isDone, isCancelled, and getNow
234 +     */
235 +    public void testConstructor() {
236 +        CompletableFuture<Integer> f = new CompletableFuture<>();
237 +        checkIncomplete(f);
238 +    }
239 +
240 +    /**
241 +     * complete completes normally, as indicated by methods isDone,
242 +     * isCancelled, join, get, and getNow
243 +     */
244 +    public void testComplete() {
245 +        for (Integer v1 : new Integer[] { 1, null })
246 +    {
247 +        CompletableFuture<Integer> f = new CompletableFuture<>();
248 +        checkIncomplete(f);
249 +        assertTrue(f.complete(v1));
250 +        assertFalse(f.complete(v1));
251 +        checkCompletedNormally(f, v1);
252 +    }}
253 +
254 +    /**
255 +     * completeExceptionally completes exceptionally, as indicated by
256 +     * methods isDone, isCancelled, join, get, and getNow
257 +     */
258 +    public void testCompleteExceptionally() {
259 +        CompletableFuture<Integer> f = new CompletableFuture<>();
260 +        CFException ex = new CFException();
261 +        checkIncomplete(f);
262 +        f.completeExceptionally(ex);
263 +        checkCompletedExceptionally(f, ex);
264 +    }
265 +
266 +    /**
267 +     * cancel completes exceptionally and reports cancelled, as indicated by
268 +     * methods isDone, isCancelled, join, get, and getNow
269 +     */
270 +    public void testCancel() {
271 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
272 +    {
273 +        CompletableFuture<Integer> f = new CompletableFuture<>();
274 +        checkIncomplete(f);
275 +        assertTrue(f.cancel(true));
276 +        assertTrue(f.cancel(true));
277 +        checkCancelled(f);
278 +    }}
279 +
280 +    /**
281 +     * obtrudeValue forces completion with given value
282 +     */
283 +    public void testObtrudeValue() {
284 +        CompletableFuture<Integer> f = new CompletableFuture<>();
285 +        checkIncomplete(f);
286 +        assertTrue(f.complete(one));
287 +        checkCompletedNormally(f, one);
288 +        f.obtrudeValue(three);
289 +        checkCompletedNormally(f, three);
290 +        f.obtrudeValue(two);
291 +        checkCompletedNormally(f, two);
292 +        f = new CompletableFuture<>();
293 +        f.obtrudeValue(three);
294 +        checkCompletedNormally(f, three);
295 +        f.obtrudeValue(null);
296 +        checkCompletedNormally(f, null);
297 +        f = new CompletableFuture<>();
298 +        f.completeExceptionally(new CFException());
299 +        f.obtrudeValue(four);
300 +        checkCompletedNormally(f, four);
301 +    }
302 +
303 +    /**
304 +     * obtrudeException forces completion with given exception
305 +     */
306 +    public void testObtrudeException() {
307 +        for (Integer v1 : new Integer[] { 1, null })
308 +    {
309 +        CFException ex;
310 +        CompletableFuture<Integer> f;
311 +
312 +        f = new CompletableFuture<>();
313 +        assertTrue(f.complete(v1));
314 +        for (int i = 0; i < 2; i++) {
315 +            f.obtrudeException(ex = new CFException());
316 +            checkCompletedExceptionally(f, ex);
317 +        }
318 +
319 +        f = new CompletableFuture<>();
320 +        for (int i = 0; i < 2; i++) {
321 +            f.obtrudeException(ex = new CFException());
322 +            checkCompletedExceptionally(f, ex);
323 +        }
324 +
325 +        f = new CompletableFuture<>();
326 +        f.completeExceptionally(ex = new CFException());
327 +        f.obtrudeValue(v1);
328 +        checkCompletedNormally(f, v1);
329 +        f.obtrudeException(ex = new CFException());
330 +        checkCompletedExceptionally(f, ex);
331 +        f.completeExceptionally(new CFException());
332 +        checkCompletedExceptionally(f, ex);
333 +        assertFalse(f.complete(v1));
334 +        checkCompletedExceptionally(f, ex);
335 +    }}
336 +
337 +    /**
338 +     * getNumberOfDependents returns number of dependent tasks
339 +     */
340 +    public void testGetNumberOfDependents() {
341 +        for (ExecutionMode m : ExecutionMode.values())
342 +        for (Integer v1 : new Integer[] { 1, null })
343 +    {
344 +        CompletableFuture<Integer> f = new CompletableFuture<>();
345 +        assertEquals(0, f.getNumberOfDependents());
346 +        final CompletableFuture<Void> g = m.thenRun(f, new Noop(m));
347 +        assertEquals(1, f.getNumberOfDependents());
348 +        assertEquals(0, g.getNumberOfDependents());
349 +        final CompletableFuture<Void> h = m.thenRun(f, new Noop(m));
350 +        assertEquals(2, f.getNumberOfDependents());
351 +        assertEquals(0, h.getNumberOfDependents());
352 +        assertTrue(f.complete(v1));
353 +        checkCompletedNormally(g, null);
354 +        checkCompletedNormally(h, null);
355 +        assertEquals(0, f.getNumberOfDependents());
356 +        assertEquals(0, g.getNumberOfDependents());
357 +        assertEquals(0, h.getNumberOfDependents());
358 +    }}
359 +
360 +    /**
361 +     * toString indicates current completion state
362 +     */
363      public void testToString() {
364          CompletableFuture<String> f;
365  
366          f = new CompletableFuture<String>();
367          assertTrue(f.toString().contains("[Not completed]"));
368  
369 <        f.complete("foo");
369 >        assertTrue(f.complete("foo"));
370          assertTrue(f.toString().contains("[Completed normally]"));
371  
372          f = new CompletableFuture<String>();
373 <        f.completeExceptionally(new IndexOutOfBoundsException());
373 >        assertTrue(f.completeExceptionally(new IndexOutOfBoundsException()));
374          assertTrue(f.toString().contains("[Completed exceptionally]"));
375 +
376 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false }) {
377 +            f = new CompletableFuture<String>();
378 +            assertTrue(f.cancel(mayInterruptIfRunning));
379 +            assertTrue(f.toString().contains("[Completed exceptionally]"));
380 +        }
381 +    }
382 +
383 +    /**
384 +     * completedFuture returns a completed CompletableFuture with given value
385 +     */
386 +    public void testCompletedFuture() {
387 +        CompletableFuture<String> f = CompletableFuture.completedFuture("test");
388 +        checkCompletedNormally(f, "test");
389 +    }
390 +
391 +    abstract class CheckedAction {
392 +        int invocationCount = 0;
393 +        final ExecutionMode m;
394 +        CheckedAction(ExecutionMode m) { this.m = m; }
395 +        void invoked() {
396 +            m.checkExecutionMode();
397 +            assertEquals(0, invocationCount++);
398 +        }
399 +        void assertNotInvoked() { assertEquals(0, invocationCount); }
400 +        void assertInvoked() { assertEquals(1, invocationCount); }
401 +    }
402 +
403 +    abstract class CheckedIntegerAction extends CheckedAction {
404 +        Integer value;
405 +        CheckedIntegerAction(ExecutionMode m) { super(m); }
406 +        void assertValue(Integer expected) {
407 +            assertInvoked();
408 +            assertEquals(expected, value);
409 +        }
410 +    }
411 +
412 +    class IntegerSupplier extends CheckedAction
413 +        implements Supplier<Integer>
414 +    {
415 +        final Integer value;
416 +        IntegerSupplier(ExecutionMode m, Integer value) {
417 +            super(m);
418 +            this.value = value;
419 +        }
420 +        public Integer get() {
421 +            invoked();
422 +            return value;
423 +        }
424 +    }
425 +
426 +    // A function that handles and produces null values as well.
427 +    static Integer inc(Integer x) {
428 +        return (x == null) ? null : x + 1;
429 +    }
430 +
431 +    class NoopConsumer extends CheckedIntegerAction
432 +        implements Consumer<Integer>
433 +    {
434 +        NoopConsumer(ExecutionMode m) { super(m); }
435 +        public void accept(Integer x) {
436 +            invoked();
437 +            value = x;
438 +        }
439 +    }
440 +
441 +    class IncFunction extends CheckedIntegerAction
442 +        implements Function<Integer,Integer>
443 +    {
444 +        IncFunction(ExecutionMode m) { super(m); }
445 +        public Integer apply(Integer x) {
446 +            invoked();
447 +            return value = inc(x);
448 +        }
449 +    }
450 +
451 +    // Choose non-commutative actions for better coverage
452 +    // A non-commutative function that handles and produces null values as well.
453 +    static Integer subtract(Integer x, Integer y) {
454 +        return (x == null && y == null) ? null :
455 +            ((x == null) ? 42 : x.intValue())
456 +            - ((y == null) ? 99 : y.intValue());
457 +    }
458 +
459 +    class SubtractAction extends CheckedIntegerAction
460 +        implements BiConsumer<Integer, Integer>
461 +    {
462 +        SubtractAction(ExecutionMode m) { super(m); }
463 +        public void accept(Integer x, Integer y) {
464 +            invoked();
465 +            value = subtract(x, y);
466 +        }
467 +    }
468 +
469 +    class SubtractFunction extends CheckedIntegerAction
470 +        implements BiFunction<Integer, Integer, Integer>
471 +    {
472 +        SubtractFunction(ExecutionMode m) { super(m); }
473 +        public Integer apply(Integer x, Integer y) {
474 +            invoked();
475 +            return value = subtract(x, y);
476 +        }
477 +    }
478 +
479 +    class Noop extends CheckedAction implements Runnable {
480 +        Noop(ExecutionMode m) { super(m); }
481 +        public void run() {
482 +            invoked();
483 +        }
484 +    }
485 +
486 +    class FailingSupplier extends CheckedAction
487 +        implements Supplier<Integer>
488 +    {
489 +        FailingSupplier(ExecutionMode m) { super(m); }
490 +        public Integer get() {
491 +            invoked();
492 +            throw new CFException();
493 +        }
494 +    }
495 +
496 +    class FailingConsumer extends CheckedIntegerAction
497 +        implements Consumer<Integer>
498 +    {
499 +        FailingConsumer(ExecutionMode m) { super(m); }
500 +        public void accept(Integer x) {
501 +            invoked();
502 +            value = x;
503 +            throw new CFException();
504 +        }
505 +    }
506 +
507 +    class FailingBiConsumer extends CheckedIntegerAction
508 +        implements BiConsumer<Integer, Integer>
509 +    {
510 +        FailingBiConsumer(ExecutionMode m) { super(m); }
511 +        public void accept(Integer x, Integer y) {
512 +            invoked();
513 +            value = subtract(x, y);
514 +            throw new CFException();
515 +        }
516 +    }
517 +
518 +    class FailingFunction extends CheckedIntegerAction
519 +        implements Function<Integer, Integer>
520 +    {
521 +        FailingFunction(ExecutionMode m) { super(m); }
522 +        public Integer apply(Integer x) {
523 +            invoked();
524 +            value = x;
525 +            throw new CFException();
526 +        }
527 +    }
528 +
529 +    class FailingBiFunction extends CheckedIntegerAction
530 +        implements BiFunction<Integer, Integer, Integer>
531 +    {
532 +        FailingBiFunction(ExecutionMode m) { super(m); }
533 +        public Integer apply(Integer x, Integer y) {
534 +            invoked();
535 +            value = subtract(x, y);
536 +            throw new CFException();
537 +        }
538 +    }
539 +
540 +    class FailingRunnable extends CheckedAction implements Runnable {
541 +        FailingRunnable(ExecutionMode m) { super(m); }
542 +        public void run() {
543 +            invoked();
544 +            throw new CFException();
545 +        }
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 +    /**
588 +     * Permits the testing of parallel code for the 3 different
589 +     * execution modes without copy/pasting all the test methods.
590 +     */
591 +    enum ExecutionMode {
592 +        SYNC {
593 +            public void checkExecutionMode() {
594 +                assertFalse(ThreadExecutor.startedCurrentThread());
595 +                assertNull(ForkJoinTask.getPool());
596 +            }
597 +            public CompletableFuture<Void> runAsync(Runnable a) {
598 +                throw new UnsupportedOperationException();
599 +            }
600 +            public <U> CompletableFuture<U> supplyAsync(Supplier<U> a) {
601 +                throw new UnsupportedOperationException();
602 +            }
603 +            public <T> CompletableFuture<Void> thenRun
604 +                (CompletableFuture<T> f, Runnable a) {
605 +                return f.thenRun(a);
606 +            }
607 +            public <T> CompletableFuture<Void> thenAccept
608 +                (CompletableFuture<T> f, Consumer<? super T> a) {
609 +                return f.thenAccept(a);
610 +            }
611 +            public <T,U> CompletableFuture<U> thenApply
612 +                (CompletableFuture<T> f, Function<? super T,U> a) {
613 +                return f.thenApply(a);
614 +            }
615 +            public <T,U> CompletableFuture<U> thenCompose
616 +                (CompletableFuture<T> f,
617 +                 Function<? super T,? extends CompletionStage<U>> a) {
618 +                return f.thenCompose(a);
619 +            }
620 +            public <T,U> CompletableFuture<U> handle
621 +                (CompletableFuture<T> f,
622 +                 BiFunction<? super T,Throwable,? extends U> a) {
623 +                return f.handle(a);
624 +            }
625 +            public <T> CompletableFuture<T> whenComplete
626 +                (CompletableFuture<T> f,
627 +                 BiConsumer<? super T,? super Throwable> a) {
628 +                return f.whenComplete(a);
629 +            }
630 +            public <T,U> CompletableFuture<Void> runAfterBoth
631 +                (CompletableFuture<T> f, CompletableFuture<U> g, Runnable a) {
632 +                return f.runAfterBoth(g, a);
633 +            }
634 +            public <T,U> CompletableFuture<Void> thenAcceptBoth
635 +                (CompletableFuture<T> f,
636 +                 CompletionStage<? extends U> g,
637 +                 BiConsumer<? super T,? super U> a) {
638 +                return f.thenAcceptBoth(g, a);
639 +            }
640 +            public <T,U,V> CompletableFuture<V> thenCombine
641 +                (CompletableFuture<T> f,
642 +                 CompletionStage<? extends U> g,
643 +                 BiFunction<? super T,? super U,? extends V> a) {
644 +                return f.thenCombine(g, a);
645 +            }
646 +            public <T> CompletableFuture<Void> runAfterEither
647 +                (CompletableFuture<T> f,
648 +                 CompletionStage<?> g,
649 +                 java.lang.Runnable a) {
650 +                return f.runAfterEither(g, a);
651 +            }
652 +            public <T> CompletableFuture<Void> acceptEither
653 +                (CompletableFuture<T> f,
654 +                 CompletionStage<? extends T> g,
655 +                 Consumer<? super T> a) {
656 +                return f.acceptEither(g, a);
657 +            }
658 +            public <T,U> CompletableFuture<U> applyToEither
659 +                (CompletableFuture<T> f,
660 +                 CompletionStage<? extends T> g,
661 +                 Function<? super T,U> a) {
662 +                return f.applyToEither(g, a);
663 +            }
664 +        },
665 +
666 +        ASYNC {
667 +            public void checkExecutionMode() {
668 +                assertSame(ForkJoinPool.commonPool(),
669 +                           ForkJoinTask.getPool());
670 +            }
671 +            public CompletableFuture<Void> runAsync(Runnable a) {
672 +                return CompletableFuture.runAsync(a);
673 +            }
674 +            public <U> CompletableFuture<U> supplyAsync(Supplier<U> a) {
675 +                return CompletableFuture.supplyAsync(a);
676 +            }
677 +            public <T> CompletableFuture<Void> thenRun
678 +                (CompletableFuture<T> f, Runnable a) {
679 +                return f.thenRunAsync(a);
680 +            }
681 +            public <T> CompletableFuture<Void> thenAccept
682 +                (CompletableFuture<T> f, Consumer<? super T> a) {
683 +                return f.thenAcceptAsync(a);
684 +            }
685 +            public <T,U> CompletableFuture<U> thenApply
686 +                (CompletableFuture<T> f, Function<? super T,U> a) {
687 +                return f.thenApplyAsync(a);
688 +            }
689 +            public <T,U> CompletableFuture<U> thenCompose
690 +                (CompletableFuture<T> f,
691 +                 Function<? super T,? extends CompletionStage<U>> a) {
692 +                return f.thenComposeAsync(a);
693 +            }
694 +            public <T,U> CompletableFuture<U> handle
695 +                (CompletableFuture<T> f,
696 +                 BiFunction<? super T,Throwable,? extends U> a) {
697 +                return f.handleAsync(a);
698 +            }
699 +            public <T> CompletableFuture<T> whenComplete
700 +                (CompletableFuture<T> f,
701 +                 BiConsumer<? super T,? super Throwable> a) {
702 +                return f.whenCompleteAsync(a);
703 +            }
704 +            public <T,U> CompletableFuture<Void> runAfterBoth
705 +                (CompletableFuture<T> f, CompletableFuture<U> g, Runnable a) {
706 +                return f.runAfterBothAsync(g, a);
707 +            }
708 +            public <T,U> CompletableFuture<Void> thenAcceptBoth
709 +                (CompletableFuture<T> f,
710 +                 CompletionStage<? extends U> g,
711 +                 BiConsumer<? super T,? super U> a) {
712 +                return f.thenAcceptBothAsync(g, a);
713 +            }
714 +            public <T,U,V> CompletableFuture<V> thenCombine
715 +                (CompletableFuture<T> f,
716 +                 CompletionStage<? extends U> g,
717 +                 BiFunction<? super T,? super U,? extends V> a) {
718 +                return f.thenCombineAsync(g, a);
719 +            }
720 +            public <T> CompletableFuture<Void> runAfterEither
721 +                (CompletableFuture<T> f,
722 +                 CompletionStage<?> g,
723 +                 java.lang.Runnable a) {
724 +                return f.runAfterEitherAsync(g, a);
725 +            }
726 +            public <T> CompletableFuture<Void> acceptEither
727 +                (CompletableFuture<T> f,
728 +                 CompletionStage<? extends T> g,
729 +                 Consumer<? super T> a) {
730 +                return f.acceptEitherAsync(g, a);
731 +            }
732 +            public <T,U> CompletableFuture<U> applyToEither
733 +                (CompletableFuture<T> f,
734 +                 CompletionStage<? extends T> g,
735 +                 Function<? super T,U> a) {
736 +                return f.applyToEitherAsync(g, a);
737 +            }
738 +        },
739 +
740 +        EXECUTOR {
741 +            public void checkExecutionMode() {
742 +                assertTrue(ThreadExecutor.startedCurrentThread());
743 +            }
744 +            public CompletableFuture<Void> runAsync(Runnable a) {
745 +                return CompletableFuture.runAsync(a, new ThreadExecutor());
746 +            }
747 +            public <U> CompletableFuture<U> supplyAsync(Supplier<U> a) {
748 +                return CompletableFuture.supplyAsync(a, new ThreadExecutor());
749 +            }
750 +            public <T> CompletableFuture<Void> thenRun
751 +                (CompletableFuture<T> f, Runnable a) {
752 +                return f.thenRunAsync(a, new ThreadExecutor());
753 +            }
754 +            public <T> CompletableFuture<Void> thenAccept
755 +                (CompletableFuture<T> f, Consumer<? super T> a) {
756 +                return f.thenAcceptAsync(a, new ThreadExecutor());
757 +            }
758 +            public <T,U> CompletableFuture<U> thenApply
759 +                (CompletableFuture<T> f, Function<? super T,U> a) {
760 +                return f.thenApplyAsync(a, new ThreadExecutor());
761 +            }
762 +            public <T,U> CompletableFuture<U> thenCompose
763 +                (CompletableFuture<T> f,
764 +                 Function<? super T,? extends CompletionStage<U>> a) {
765 +                return f.thenComposeAsync(a, new ThreadExecutor());
766 +            }
767 +            public <T,U> CompletableFuture<U> handle
768 +                (CompletableFuture<T> f,
769 +                 BiFunction<? super T,Throwable,? extends U> a) {
770 +                return f.handleAsync(a, new ThreadExecutor());
771 +            }
772 +            public <T> CompletableFuture<T> whenComplete
773 +                (CompletableFuture<T> f,
774 +                 BiConsumer<? super T,? super Throwable> a) {
775 +                return f.whenCompleteAsync(a, new ThreadExecutor());
776 +            }
777 +            public <T,U> CompletableFuture<Void> runAfterBoth
778 +                (CompletableFuture<T> f, CompletableFuture<U> g, Runnable a) {
779 +                return f.runAfterBothAsync(g, a, new ThreadExecutor());
780 +            }
781 +            public <T,U> CompletableFuture<Void> thenAcceptBoth
782 +                (CompletableFuture<T> f,
783 +                 CompletionStage<? extends U> g,
784 +                 BiConsumer<? super T,? super U> a) {
785 +                return f.thenAcceptBothAsync(g, a, new ThreadExecutor());
786 +            }
787 +            public <T,U,V> CompletableFuture<V> thenCombine
788 +                (CompletableFuture<T> f,
789 +                 CompletionStage<? extends U> g,
790 +                 BiFunction<? super T,? super U,? extends V> a) {
791 +                return f.thenCombineAsync(g, a, new ThreadExecutor());
792 +            }
793 +            public <T> CompletableFuture<Void> runAfterEither
794 +                (CompletableFuture<T> f,
795 +                 CompletionStage<?> g,
796 +                 java.lang.Runnable a) {
797 +                return f.runAfterEitherAsync(g, a, new ThreadExecutor());
798 +            }
799 +            public <T> CompletableFuture<Void> acceptEither
800 +                (CompletableFuture<T> f,
801 +                 CompletionStage<? extends T> g,
802 +                 Consumer<? super T> a) {
803 +                return f.acceptEitherAsync(g, a, new ThreadExecutor());
804 +            }
805 +            public <T,U> CompletableFuture<U> applyToEither
806 +                (CompletableFuture<T> f,
807 +                 CompletionStage<? extends T> g,
808 +                 Function<? super T,U> a) {
809 +                return f.applyToEitherAsync(g, a, new ThreadExecutor());
810 +            }
811 +        };
812 +
813 +        public abstract void checkExecutionMode();
814 +        public abstract CompletableFuture<Void> runAsync(Runnable a);
815 +        public abstract <U> CompletableFuture<U> supplyAsync(Supplier<U> a);
816 +        public abstract <T> CompletableFuture<Void> thenRun
817 +            (CompletableFuture<T> f, Runnable a);
818 +        public abstract <T> CompletableFuture<Void> thenAccept
819 +            (CompletableFuture<T> f, Consumer<? super T> a);
820 +        public abstract <T,U> CompletableFuture<U> thenApply
821 +            (CompletableFuture<T> f, Function<? super T,U> a);
822 +        public abstract <T,U> CompletableFuture<U> thenCompose
823 +            (CompletableFuture<T> f,
824 +             Function<? super T,? extends CompletionStage<U>> a);
825 +        public abstract <T,U> CompletableFuture<U> handle
826 +            (CompletableFuture<T> f,
827 +             BiFunction<? super T,Throwable,? extends U> a);
828 +        public abstract <T> CompletableFuture<T> whenComplete
829 +            (CompletableFuture<T> f,
830 +             BiConsumer<? super T,? super Throwable> a);
831 +        public abstract <T,U> CompletableFuture<Void> runAfterBoth
832 +            (CompletableFuture<T> f, CompletableFuture<U> g, Runnable a);
833 +        public abstract <T,U> CompletableFuture<Void> thenAcceptBoth
834 +            (CompletableFuture<T> f,
835 +             CompletionStage<? extends U> g,
836 +             BiConsumer<? super T,? super U> a);
837 +        public abstract <T,U,V> CompletableFuture<V> thenCombine
838 +            (CompletableFuture<T> f,
839 +             CompletionStage<? extends U> g,
840 +             BiFunction<? super T,? super U,? extends V> a);
841 +        public abstract <T> CompletableFuture<Void> runAfterEither
842 +            (CompletableFuture<T> f,
843 +             CompletionStage<?> g,
844 +             java.lang.Runnable a);
845 +        public abstract <T> CompletableFuture<Void> acceptEither
846 +            (CompletableFuture<T> f,
847 +             CompletionStage<? extends T> g,
848 +             Consumer<? super T> a);
849 +        public abstract <T,U> CompletableFuture<U> applyToEither
850 +            (CompletableFuture<T> f,
851 +             CompletionStage<? extends T> g,
852 +             Function<? super T,U> a);
853 +    }
854 +
855 +    /**
856 +     * exceptionally action is not invoked when source completes
857 +     * normally, and source result is propagated
858 +     */
859 +    public void testExceptionally_normalCompletion() {
860 +        for (boolean createIncomplete : new boolean[] { true, false })
861 +        for (Integer v1 : new Integer[] { 1, null })
862 +    {
863 +        final AtomicInteger a = new AtomicInteger(0);
864 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
865 +        if (!createIncomplete) assertTrue(f.complete(v1));
866 +        final CompletableFuture<Integer> g = f.exceptionally
867 +            ((Throwable t) -> {
868 +                // Should not be called
869 +                a.getAndIncrement();
870 +                throw new AssertionError();
871 +            });
872 +        if (createIncomplete) assertTrue(f.complete(v1));
873 +
874 +        checkCompletedNormally(g, v1);
875 +        checkCompletedNormally(f, v1);
876 +        assertEquals(0, a.get());
877 +    }}
878 +
879 +    /**
880 +     * exceptionally action completes with function value on source
881 +     * exception
882 +     */
883 +    public void testExceptionally_exceptionalCompletion() {
884 +        for (boolean createIncomplete : new boolean[] { true, false })
885 +        for (Integer v1 : new Integer[] { 1, null })
886 +    {
887 +        final AtomicInteger a = new AtomicInteger(0);
888 +        final CFException ex = new CFException();
889 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
890 +        if (!createIncomplete) f.completeExceptionally(ex);
891 +        final CompletableFuture<Integer> g = f.exceptionally
892 +            ((Throwable t) -> {
893 +                ExecutionMode.SYNC.checkExecutionMode();
894 +                threadAssertSame(t, ex);
895 +                a.getAndIncrement();
896 +                return v1;
897 +            });
898 +        if (createIncomplete) f.completeExceptionally(ex);
899 +
900 +        checkCompletedNormally(g, v1);
901 +        assertEquals(1, a.get());
902 +    }}
903 +
904 +    public void testExceptionally_exceptionalCompletionActionFailed() {
905 +        for (boolean createIncomplete : new boolean[] { true, false })
906 +        for (Integer v1 : new Integer[] { 1, null })
907 +    {
908 +        final AtomicInteger a = new AtomicInteger(0);
909 +        final CFException ex1 = new CFException();
910 +        final CFException ex2 = new CFException();
911 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
912 +        if (!createIncomplete) f.completeExceptionally(ex1);
913 +        final CompletableFuture<Integer> g = f.exceptionally
914 +            ((Throwable t) -> {
915 +                ExecutionMode.SYNC.checkExecutionMode();
916 +                threadAssertSame(t, ex1);
917 +                a.getAndIncrement();
918 +                throw ex2;
919 +            });
920 +        if (createIncomplete) f.completeExceptionally(ex1);
921 +
922 +        checkCompletedWithWrappedException(g, ex2);
923 +        assertEquals(1, a.get());
924 +    }}
925 +
926 +    /**
927 +     * whenComplete action executes on normal completion, propagating
928 +     * source result.
929 +     */
930 +    public void testWhenComplete_normalCompletion1() {
931 +        for (ExecutionMode m : ExecutionMode.values())
932 +        for (boolean createIncomplete : new boolean[] { true, false })
933 +        for (Integer v1 : new Integer[] { 1, null })
934 +    {
935 +        final AtomicInteger a = new AtomicInteger(0);
936 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
937 +        if (!createIncomplete) assertTrue(f.complete(v1));
938 +        final CompletableFuture<Integer> g = m.whenComplete
939 +            (f,
940 +             (Integer x, Throwable t) -> {
941 +                m.checkExecutionMode();
942 +                threadAssertSame(x, v1);
943 +                threadAssertNull(t);
944 +                a.getAndIncrement();
945 +            });
946 +        if (createIncomplete) assertTrue(f.complete(v1));
947 +
948 +        checkCompletedNormally(g, v1);
949 +        checkCompletedNormally(f, v1);
950 +        assertEquals(1, a.get());
951 +    }}
952 +
953 +    /**
954 +     * whenComplete action executes on exceptional completion, propagating
955 +     * source result.
956 +     */
957 +    public void testWhenComplete_exceptionalCompletion() {
958 +        for (ExecutionMode m : ExecutionMode.values())
959 +        for (boolean createIncomplete : new boolean[] { true, false })
960 +        for (Integer v1 : new Integer[] { 1, null })
961 +    {
962 +        final AtomicInteger a = new AtomicInteger(0);
963 +        final CFException ex = new CFException();
964 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
965 +        if (!createIncomplete) f.completeExceptionally(ex);
966 +        final CompletableFuture<Integer> g = m.whenComplete
967 +            (f,
968 +             (Integer x, Throwable t) -> {
969 +                m.checkExecutionMode();
970 +                threadAssertNull(x);
971 +                threadAssertSame(t, ex);
972 +                a.getAndIncrement();
973 +            });
974 +        if (createIncomplete) f.completeExceptionally(ex);
975 +
976 +        checkCompletedWithWrappedException(g, ex);
977 +        checkCompletedExceptionally(f, ex);
978 +        assertEquals(1, a.get());
979 +    }}
980 +
981 +    /**
982 +     * whenComplete action executes on cancelled source, propagating
983 +     * CancellationException.
984 +     */
985 +    public void testWhenComplete_sourceCancelled() {
986 +        for (ExecutionMode m : ExecutionMode.values())
987 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
988 +        for (boolean createIncomplete : new boolean[] { true, false })
989 +    {
990 +        final AtomicInteger a = new AtomicInteger(0);
991 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
992 +        if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
993 +        final CompletableFuture<Integer> g = m.whenComplete
994 +            (f,
995 +             (Integer x, Throwable t) -> {
996 +                m.checkExecutionMode();
997 +                threadAssertNull(x);
998 +                threadAssertTrue(t instanceof CancellationException);
999 +                a.getAndIncrement();
1000 +            });
1001 +        if (createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
1002 +
1003 +        checkCompletedWithWrappedCancellationException(g);
1004 +        checkCancelled(f);
1005 +        assertEquals(1, a.get());
1006 +    }}
1007 +
1008 +    /**
1009 +     * If a whenComplete action throws an exception when triggered by
1010 +     * a normal completion, it completes exceptionally
1011 +     */
1012 +    public void testWhenComplete_actionFailed() {
1013 +        for (boolean createIncomplete : new boolean[] { true, false })
1014 +        for (ExecutionMode m : ExecutionMode.values())
1015 +        for (Integer v1 : new Integer[] { 1, null })
1016 +    {
1017 +        final AtomicInteger a = new AtomicInteger(0);
1018 +        final CFException ex = new CFException();
1019 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1020 +        if (!createIncomplete) assertTrue(f.complete(v1));
1021 +        final CompletableFuture<Integer> g = m.whenComplete
1022 +            (f,
1023 +             (Integer x, Throwable t) -> {
1024 +                m.checkExecutionMode();
1025 +                threadAssertSame(x, v1);
1026 +                threadAssertNull(t);
1027 +                a.getAndIncrement();
1028 +                throw ex;
1029 +            });
1030 +        if (createIncomplete) assertTrue(f.complete(v1));
1031 +
1032 +        checkCompletedWithWrappedException(g, ex);
1033 +        checkCompletedNormally(f, v1);
1034 +        assertEquals(1, a.get());
1035 +    }}
1036 +
1037 +    /**
1038 +     * If a whenComplete action throws an exception when triggered by
1039 +     * a source completion that also throws an exception, the source
1040 +     * exception takes precedence.
1041 +     */
1042 +    public void testWhenComplete_actionFailedSourceFailed() {
1043 +        for (boolean createIncomplete : new boolean[] { true, false })
1044 +        for (ExecutionMode m : ExecutionMode.values())
1045 +        for (Integer v1 : new Integer[] { 1, null })
1046 +    {
1047 +        final AtomicInteger a = new AtomicInteger(0);
1048 +        final CFException ex1 = new CFException();
1049 +        final CFException ex2 = new CFException();
1050 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1051 +
1052 +        if (!createIncomplete) f.completeExceptionally(ex1);
1053 +        final CompletableFuture<Integer> g = m.whenComplete
1054 +            (f,
1055 +             (Integer x, Throwable t) -> {
1056 +                m.checkExecutionMode();
1057 +                threadAssertSame(t, ex1);
1058 +                threadAssertNull(x);
1059 +                a.getAndIncrement();
1060 +                throw ex2;
1061 +            });
1062 +        if (createIncomplete) f.completeExceptionally(ex1);
1063 +
1064 +        checkCompletedWithWrappedException(g, ex1);
1065 +        checkCompletedExceptionally(f, ex1);
1066 +        assertEquals(1, a.get());
1067 +    }}
1068 +
1069 +    /**
1070 +     * handle action completes normally with function value on normal
1071 +     * completion of source
1072 +     */
1073 +    public void testHandle_normalCompletion() {
1074 +        for (ExecutionMode m : ExecutionMode.values())
1075 +        for (boolean createIncomplete : new boolean[] { true, false })
1076 +        for (Integer v1 : new Integer[] { 1, null })
1077 +    {
1078 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1079 +        final AtomicInteger a = new AtomicInteger(0);
1080 +        if (!createIncomplete) assertTrue(f.complete(v1));
1081 +        final CompletableFuture<Integer> g = m.handle
1082 +            (f,
1083 +             (Integer x, Throwable t) -> {
1084 +                m.checkExecutionMode();
1085 +                threadAssertSame(x, v1);
1086 +                threadAssertNull(t);
1087 +                a.getAndIncrement();
1088 +                return inc(v1);
1089 +            });
1090 +        if (createIncomplete) assertTrue(f.complete(v1));
1091 +
1092 +        checkCompletedNormally(g, inc(v1));
1093 +        checkCompletedNormally(f, v1);
1094 +        assertEquals(1, a.get());
1095 +    }}
1096 +
1097 +    /**
1098 +     * handle action completes normally with function value on
1099 +     * exceptional completion of source
1100 +     */
1101 +    public void testHandle_exceptionalCompletion() {
1102 +        for (ExecutionMode m : ExecutionMode.values())
1103 +        for (boolean createIncomplete : new boolean[] { true, false })
1104 +        for (Integer v1 : new Integer[] { 1, null })
1105 +    {
1106 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1107 +        final AtomicInteger a = new AtomicInteger(0);
1108 +        final CFException ex = new CFException();
1109 +        if (!createIncomplete) f.completeExceptionally(ex);
1110 +        final CompletableFuture<Integer> g = m.handle
1111 +            (f,
1112 +             (Integer x, Throwable t) -> {
1113 +                m.checkExecutionMode();
1114 +                threadAssertNull(x);
1115 +                threadAssertSame(t, ex);
1116 +                a.getAndIncrement();
1117 +                return v1;
1118 +            });
1119 +        if (createIncomplete) f.completeExceptionally(ex);
1120 +
1121 +        checkCompletedNormally(g, v1);
1122 +        checkCompletedExceptionally(f, ex);
1123 +        assertEquals(1, a.get());
1124 +    }}
1125 +
1126 +    /**
1127 +     * handle action completes normally with function value on
1128 +     * cancelled source
1129 +     */
1130 +    public void testHandle_sourceCancelled() {
1131 +        for (ExecutionMode m : ExecutionMode.values())
1132 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1133 +        for (boolean createIncomplete : new boolean[] { true, false })
1134 +        for (Integer v1 : new Integer[] { 1, null })
1135 +    {
1136 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1137 +        final AtomicInteger a = new AtomicInteger(0);
1138 +        if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
1139 +        final CompletableFuture<Integer> g = m.handle
1140 +            (f,
1141 +             (Integer x, Throwable t) -> {
1142 +                m.checkExecutionMode();
1143 +                threadAssertNull(x);
1144 +                threadAssertTrue(t instanceof CancellationException);
1145 +                a.getAndIncrement();
1146 +                return v1;
1147 +            });
1148 +        if (createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
1149 +
1150 +        checkCompletedNormally(g, v1);
1151 +        checkCancelled(f);
1152 +        assertEquals(1, a.get());
1153 +    }}
1154 +
1155 +    /**
1156 +     * handle result completes exceptionally if action does
1157 +     */
1158 +    public void testHandle_sourceFailedActionFailed() {
1159 +        for (ExecutionMode m : ExecutionMode.values())
1160 +        for (boolean createIncomplete : new boolean[] { true, false })
1161 +    {
1162 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1163 +        final AtomicInteger a = new AtomicInteger(0);
1164 +        final CFException ex1 = new CFException();
1165 +        final CFException ex2 = new CFException();
1166 +        if (!createIncomplete) f.completeExceptionally(ex1);
1167 +        final CompletableFuture<Integer> g = m.handle
1168 +            (f,
1169 +             (Integer x, Throwable t) -> {
1170 +                m.checkExecutionMode();
1171 +                threadAssertNull(x);
1172 +                threadAssertSame(ex1, t);
1173 +                a.getAndIncrement();
1174 +                throw ex2;
1175 +            });
1176 +        if (createIncomplete) f.completeExceptionally(ex1);
1177 +
1178 +        checkCompletedWithWrappedException(g, ex2);
1179 +        checkCompletedExceptionally(f, ex1);
1180 +        assertEquals(1, a.get());
1181 +    }}
1182 +
1183 +    public void testHandle_sourceCompletedNormallyActionFailed() {
1184 +        for (ExecutionMode m : ExecutionMode.values())
1185 +        for (boolean createIncomplete : new boolean[] { true, false })
1186 +        for (Integer v1 : new Integer[] { 1, null })
1187 +    {
1188 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1189 +        final AtomicInteger a = new AtomicInteger(0);
1190 +        final CFException ex = new CFException();
1191 +        if (!createIncomplete) assertTrue(f.complete(v1));
1192 +        final CompletableFuture<Integer> g = m.handle
1193 +            (f,
1194 +             (Integer x, Throwable t) -> {
1195 +                m.checkExecutionMode();
1196 +                threadAssertSame(x, v1);
1197 +                threadAssertNull(t);
1198 +                a.getAndIncrement();
1199 +                throw ex;
1200 +            });
1201 +        if (createIncomplete) assertTrue(f.complete(v1));
1202 +
1203 +        checkCompletedWithWrappedException(g, ex);
1204 +        checkCompletedNormally(f, v1);
1205 +        assertEquals(1, a.get());
1206 +    }}
1207 +
1208 +    /**
1209 +     * runAsync completes after running Runnable
1210 +     */
1211 +    public void testRunAsync_normalCompletion() {
1212 +        ExecutionMode[] executionModes = {
1213 +            ExecutionMode.ASYNC,
1214 +            ExecutionMode.EXECUTOR,
1215 +        };
1216 +        for (ExecutionMode m : executionModes)
1217 +    {
1218 +        final Noop r = new Noop(m);
1219 +        final CompletableFuture<Void> f = m.runAsync(r);
1220 +        assertNull(f.join());
1221 +        checkCompletedNormally(f, null);
1222 +        r.assertInvoked();
1223 +    }}
1224 +
1225 +    /**
1226 +     * failing runAsync completes exceptionally after running Runnable
1227 +     */
1228 +    public void testRunAsync_exceptionalCompletion() {
1229 +        ExecutionMode[] executionModes = {
1230 +            ExecutionMode.ASYNC,
1231 +            ExecutionMode.EXECUTOR,
1232 +        };
1233 +        for (ExecutionMode m : executionModes)
1234 +    {
1235 +        final FailingRunnable r = new FailingRunnable(m);
1236 +        final CompletableFuture<Void> f = m.runAsync(r);
1237 +        checkCompletedWithWrappedCFException(f);
1238 +        r.assertInvoked();
1239 +    }}
1240 +
1241 +    /**
1242 +     * supplyAsync completes with result of supplier
1243 +     */
1244 +    public void testSupplyAsync_normalCompletion() {
1245 +        ExecutionMode[] executionModes = {
1246 +            ExecutionMode.ASYNC,
1247 +            ExecutionMode.EXECUTOR,
1248 +        };
1249 +        for (ExecutionMode m : executionModes)
1250 +        for (Integer v1 : new Integer[] { 1, null })
1251 +    {
1252 +        final IntegerSupplier r = new IntegerSupplier(m, v1);
1253 +        final CompletableFuture<Integer> f = m.supplyAsync(r);
1254 +        assertSame(v1, f.join());
1255 +        checkCompletedNormally(f, v1);
1256 +        r.assertInvoked();
1257 +    }}
1258 +
1259 +    /**
1260 +     * Failing supplyAsync completes exceptionally
1261 +     */
1262 +    public void testSupplyAsync_exceptionalCompletion() {
1263 +        ExecutionMode[] executionModes = {
1264 +            ExecutionMode.ASYNC,
1265 +            ExecutionMode.EXECUTOR,
1266 +        };
1267 +        for (ExecutionMode m : executionModes)
1268 +    {
1269 +        FailingSupplier r = new FailingSupplier(m);
1270 +        CompletableFuture<Integer> f = m.supplyAsync(r);
1271 +        checkCompletedWithWrappedCFException(f);
1272 +        r.assertInvoked();
1273 +    }}
1274 +
1275 +    // seq completion methods
1276 +
1277 +    /**
1278 +     * thenRun result completes normally after normal completion of source
1279 +     */
1280 +    public void testThenRun_normalCompletion() {
1281 +        for (ExecutionMode m : ExecutionMode.values())
1282 +        for (Integer v1 : new Integer[] { 1, null })
1283 +    {
1284 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1285 +        final Noop[] rs = new Noop[6];
1286 +        for (int i = 0; i < rs.length; i++) rs[i] = new Noop(m);
1287 +
1288 +        final CompletableFuture<Void> h0 = m.thenRun(f, rs[0]);
1289 +        final CompletableFuture<Void> h1 = m.runAfterBoth(f, f, rs[1]);
1290 +        final CompletableFuture<Void> h2 = m.runAfterEither(f, f, rs[2]);
1291 +        checkIncomplete(h0);
1292 +        checkIncomplete(h1);
1293 +        checkIncomplete(h2);
1294 +        assertTrue(f.complete(v1));
1295 +        final CompletableFuture<Void> h3 = m.thenRun(f, rs[3]);
1296 +        final CompletableFuture<Void> h4 = m.runAfterBoth(f, f, rs[4]);
1297 +        final CompletableFuture<Void> h5 = m.runAfterEither(f, f, rs[5]);
1298 +
1299 +        checkCompletedNormally(h0, null);
1300 +        checkCompletedNormally(h1, null);
1301 +        checkCompletedNormally(h2, null);
1302 +        checkCompletedNormally(h3, null);
1303 +        checkCompletedNormally(h4, null);
1304 +        checkCompletedNormally(h5, null);
1305 +        checkCompletedNormally(f, v1);
1306 +        for (Noop r : rs) r.assertInvoked();
1307 +    }}
1308 +
1309 +    /**
1310 +     * thenRun result completes exceptionally after exceptional
1311 +     * completion of source
1312 +     */
1313 +    public void testThenRun_exceptionalCompletion() {
1314 +        for (ExecutionMode m : ExecutionMode.values())
1315 +    {
1316 +        final CFException ex = new CFException();
1317 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1318 +        final Noop[] rs = new Noop[6];
1319 +        for (int i = 0; i < rs.length; i++) rs[i] = new Noop(m);
1320 +
1321 +        final CompletableFuture<Void> h0 = m.thenRun(f, rs[0]);
1322 +        final CompletableFuture<Void> h1 = m.runAfterBoth(f, f, rs[1]);
1323 +        final CompletableFuture<Void> h2 = m.runAfterEither(f, f, rs[2]);
1324 +        checkIncomplete(h0);
1325 +        checkIncomplete(h1);
1326 +        checkIncomplete(h2);
1327 +        assertTrue(f.completeExceptionally(ex));
1328 +        final CompletableFuture<Void> h3 = m.thenRun(f, rs[3]);
1329 +        final CompletableFuture<Void> h4 = m.runAfterBoth(f, f, rs[4]);
1330 +        final CompletableFuture<Void> h5 = m.runAfterEither(f, f, rs[5]);
1331 +
1332 +        checkCompletedWithWrappedException(h0, ex);
1333 +        checkCompletedWithWrappedException(h1, ex);
1334 +        checkCompletedWithWrappedException(h2, ex);
1335 +        checkCompletedWithWrappedException(h3, ex);
1336 +        checkCompletedWithWrappedException(h4, ex);
1337 +        checkCompletedWithWrappedException(h5, ex);
1338 +        checkCompletedExceptionally(f, ex);
1339 +        for (Noop r : rs) r.assertNotInvoked();
1340 +    }}
1341 +
1342 +    /**
1343 +     * thenRun result completes exceptionally if source cancelled
1344 +     */
1345 +    public void testThenRun_sourceCancelled() {
1346 +        for (ExecutionMode m : ExecutionMode.values())
1347 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1348 +    {
1349 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1350 +        final Noop[] rs = new Noop[6];
1351 +        for (int i = 0; i < rs.length; i++) rs[i] = new Noop(m);
1352 +
1353 +        final CompletableFuture<Void> h0 = m.thenRun(f, rs[0]);
1354 +        final CompletableFuture<Void> h1 = m.runAfterBoth(f, f, rs[1]);
1355 +        final CompletableFuture<Void> h2 = m.runAfterEither(f, f, rs[2]);
1356 +        checkIncomplete(h0);
1357 +        checkIncomplete(h1);
1358 +        checkIncomplete(h2);
1359 +        assertTrue(f.cancel(mayInterruptIfRunning));
1360 +        final CompletableFuture<Void> h3 = m.thenRun(f, rs[3]);
1361 +        final CompletableFuture<Void> h4 = m.runAfterBoth(f, f, rs[4]);
1362 +        final CompletableFuture<Void> h5 = m.runAfterEither(f, f, rs[5]);
1363 +
1364 +        checkCompletedWithWrappedCancellationException(h0);
1365 +        checkCompletedWithWrappedCancellationException(h1);
1366 +        checkCompletedWithWrappedCancellationException(h2);
1367 +        checkCompletedWithWrappedCancellationException(h3);
1368 +        checkCompletedWithWrappedCancellationException(h4);
1369 +        checkCompletedWithWrappedCancellationException(h5);
1370 +        checkCancelled(f);
1371 +        for (Noop r : rs) r.assertNotInvoked();
1372 +    }}
1373 +
1374 +    /**
1375 +     * thenRun result completes exceptionally if action does
1376 +     */
1377 +    public void testThenRun_actionFailed() {
1378 +        for (ExecutionMode m : ExecutionMode.values())
1379 +        for (Integer v1 : new Integer[] { 1, null })
1380 +    {
1381 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1382 +        final FailingRunnable[] rs = new FailingRunnable[6];
1383 +        for (int i = 0; i < rs.length; i++) rs[i] = new FailingRunnable(m);
1384 +
1385 +        final CompletableFuture<Void> h0 = m.thenRun(f, rs[0]);
1386 +        final CompletableFuture<Void> h1 = m.runAfterBoth(f, f, rs[1]);
1387 +        final CompletableFuture<Void> h2 = m.runAfterEither(f, f, rs[2]);
1388 +        assertTrue(f.complete(v1));
1389 +        final CompletableFuture<Void> h3 = m.thenRun(f, rs[3]);
1390 +        final CompletableFuture<Void> h4 = m.runAfterBoth(f, f, rs[4]);
1391 +        final CompletableFuture<Void> h5 = m.runAfterEither(f, f, rs[5]);
1392 +
1393 +        checkCompletedWithWrappedCFException(h0);
1394 +        checkCompletedWithWrappedCFException(h1);
1395 +        checkCompletedWithWrappedCFException(h2);
1396 +        checkCompletedWithWrappedCFException(h3);
1397 +        checkCompletedWithWrappedCFException(h4);
1398 +        checkCompletedWithWrappedCFException(h5);
1399 +        checkCompletedNormally(f, v1);
1400 +    }}
1401 +
1402 +    /**
1403 +     * thenApply result completes normally after normal completion of source
1404 +     */
1405 +    public void testThenApply_normalCompletion() {
1406 +        for (ExecutionMode m : ExecutionMode.values())
1407 +        for (Integer v1 : new Integer[] { 1, null })
1408 +    {
1409 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1410 +        final IncFunction[] rs = new IncFunction[4];
1411 +        for (int i = 0; i < rs.length; i++) rs[i] = new IncFunction(m);
1412 +
1413 +        final CompletableFuture<Integer> h0 = m.thenApply(f, rs[0]);
1414 +        final CompletableFuture<Integer> h1 = m.applyToEither(f, f, rs[1]);
1415 +        checkIncomplete(h0);
1416 +        checkIncomplete(h1);
1417 +        assertTrue(f.complete(v1));
1418 +        final CompletableFuture<Integer> h2 = m.thenApply(f, rs[2]);
1419 +        final CompletableFuture<Integer> h3 = m.applyToEither(f, f, rs[3]);
1420 +
1421 +        checkCompletedNormally(h0, inc(v1));
1422 +        checkCompletedNormally(h1, inc(v1));
1423 +        checkCompletedNormally(h2, inc(v1));
1424 +        checkCompletedNormally(h3, inc(v1));
1425 +        checkCompletedNormally(f, v1);
1426 +        for (IncFunction r : rs) r.assertValue(inc(v1));
1427 +    }}
1428 +
1429 +    /**
1430 +     * thenApply result completes exceptionally after exceptional
1431 +     * completion of source
1432 +     */
1433 +    public void testThenApply_exceptionalCompletion() {
1434 +        for (ExecutionMode m : ExecutionMode.values())
1435 +    {
1436 +        final CFException ex = new CFException();
1437 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1438 +        final IncFunction[] rs = new IncFunction[4];
1439 +        for (int i = 0; i < rs.length; i++) rs[i] = new IncFunction(m);
1440 +
1441 +        final CompletableFuture<Integer> h0 = m.thenApply(f, rs[0]);
1442 +        final CompletableFuture<Integer> h1 = m.applyToEither(f, f, rs[1]);
1443 +        assertTrue(f.completeExceptionally(ex));
1444 +        final CompletableFuture<Integer> h2 = m.thenApply(f, rs[2]);
1445 +        final CompletableFuture<Integer> h3 = m.applyToEither(f, f, rs[3]);
1446 +
1447 +        checkCompletedWithWrappedException(h0, ex);
1448 +        checkCompletedWithWrappedException(h1, ex);
1449 +        checkCompletedWithWrappedException(h2, ex);
1450 +        checkCompletedWithWrappedException(h3, ex);
1451 +        checkCompletedExceptionally(f, ex);
1452 +        for (IncFunction r : rs) r.assertNotInvoked();
1453 +    }}
1454 +
1455 +    /**
1456 +     * thenApply result completes exceptionally if source cancelled
1457 +     */
1458 +    public void testThenApply_sourceCancelled() {
1459 +        for (ExecutionMode m : ExecutionMode.values())
1460 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1461 +    {
1462 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1463 +        final IncFunction[] rs = new IncFunction[4];
1464 +        for (int i = 0; i < rs.length; i++) rs[i] = new IncFunction(m);
1465 +
1466 +        final CompletableFuture<Integer> h0 = m.thenApply(f, rs[0]);
1467 +        final CompletableFuture<Integer> h1 = m.applyToEither(f, f, rs[1]);
1468 +        assertTrue(f.cancel(mayInterruptIfRunning));
1469 +        final CompletableFuture<Integer> h2 = m.thenApply(f, rs[2]);
1470 +        final CompletableFuture<Integer> h3 = m.applyToEither(f, f, rs[3]);
1471 +
1472 +        checkCompletedWithWrappedCancellationException(h0);
1473 +        checkCompletedWithWrappedCancellationException(h1);
1474 +        checkCompletedWithWrappedCancellationException(h2);
1475 +        checkCompletedWithWrappedCancellationException(h3);
1476 +        checkCancelled(f);
1477 +        for (IncFunction r : rs) r.assertNotInvoked();
1478 +    }}
1479 +
1480 +    /**
1481 +     * thenApply result completes exceptionally if action does
1482 +     */
1483 +    public void testThenApply_actionFailed() {
1484 +        for (ExecutionMode m : ExecutionMode.values())
1485 +        for (Integer v1 : new Integer[] { 1, null })
1486 +    {
1487 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1488 +        final FailingFunction[] rs = new FailingFunction[4];
1489 +        for (int i = 0; i < rs.length; i++) rs[i] = new FailingFunction(m);
1490 +
1491 +        final CompletableFuture<Integer> h0 = m.thenApply(f, rs[0]);
1492 +        final CompletableFuture<Integer> h1 = m.applyToEither(f, f, rs[1]);
1493 +        assertTrue(f.complete(v1));
1494 +        final CompletableFuture<Integer> h2 = m.thenApply(f, rs[2]);
1495 +        final CompletableFuture<Integer> h3 = m.applyToEither(f, f, rs[3]);
1496 +
1497 +        checkCompletedWithWrappedCFException(h0);
1498 +        checkCompletedWithWrappedCFException(h1);
1499 +        checkCompletedWithWrappedCFException(h2);
1500 +        checkCompletedWithWrappedCFException(h3);
1501 +        checkCompletedNormally(f, v1);
1502 +    }}
1503 +
1504 +    /**
1505 +     * thenAccept result completes normally after normal completion of source
1506 +     */
1507 +    public void testThenAccept_normalCompletion() {
1508 +        for (ExecutionMode m : ExecutionMode.values())
1509 +        for (Integer v1 : new Integer[] { 1, null })
1510 +    {
1511 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1512 +        final NoopConsumer[] rs = new NoopConsumer[4];
1513 +        for (int i = 0; i < rs.length; i++) rs[i] = new NoopConsumer(m);
1514 +
1515 +        final CompletableFuture<Void> h0 = m.thenAccept(f, rs[0]);
1516 +        final CompletableFuture<Void> h1 = m.acceptEither(f, f, rs[1]);
1517 +        checkIncomplete(h0);
1518 +        checkIncomplete(h1);
1519 +        assertTrue(f.complete(v1));
1520 +        final CompletableFuture<Void> h2 = m.thenAccept(f, rs[2]);
1521 +        final CompletableFuture<Void> h3 = m.acceptEither(f, f, rs[3]);
1522 +
1523 +        checkCompletedNormally(h0, null);
1524 +        checkCompletedNormally(h1, null);
1525 +        checkCompletedNormally(h2, null);
1526 +        checkCompletedNormally(h3, null);
1527 +        checkCompletedNormally(f, v1);
1528 +        for (NoopConsumer r : rs) r.assertValue(v1);
1529 +    }}
1530 +
1531 +    /**
1532 +     * thenAccept result completes exceptionally after exceptional
1533 +     * completion of source
1534 +     */
1535 +    public void testThenAccept_exceptionalCompletion() {
1536 +        for (ExecutionMode m : ExecutionMode.values())
1537 +    {
1538 +        final CFException ex = new CFException();
1539 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1540 +        final NoopConsumer[] rs = new NoopConsumer[4];
1541 +        for (int i = 0; i < rs.length; i++) rs[i] = new NoopConsumer(m);
1542 +
1543 +        final CompletableFuture<Void> h0 = m.thenAccept(f, rs[0]);
1544 +        final CompletableFuture<Void> h1 = m.acceptEither(f, f, rs[1]);
1545 +        assertTrue(f.completeExceptionally(ex));
1546 +        final CompletableFuture<Void> h2 = m.thenAccept(f, rs[2]);
1547 +        final CompletableFuture<Void> h3 = m.acceptEither(f, f, rs[3]);
1548 +
1549 +        checkCompletedWithWrappedException(h0, ex);
1550 +        checkCompletedWithWrappedException(h1, ex);
1551 +        checkCompletedWithWrappedException(h2, ex);
1552 +        checkCompletedWithWrappedException(h3, ex);
1553 +        checkCompletedExceptionally(f, ex);
1554 +        for (NoopConsumer r : rs) r.assertNotInvoked();
1555 +    }}
1556 +
1557 +    /**
1558 +     * thenAccept result completes exceptionally if source cancelled
1559 +     */
1560 +    public void testThenAccept_sourceCancelled() {
1561 +        for (ExecutionMode m : ExecutionMode.values())
1562 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1563 +    {
1564 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1565 +        final NoopConsumer[] rs = new NoopConsumer[4];
1566 +        for (int i = 0; i < rs.length; i++) rs[i] = new NoopConsumer(m);
1567 +
1568 +        final CompletableFuture<Void> h0 = m.thenAccept(f, rs[0]);
1569 +        final CompletableFuture<Void> h1 = m.acceptEither(f, f, rs[1]);
1570 +        assertTrue(f.cancel(mayInterruptIfRunning));
1571 +        final CompletableFuture<Void> h2 = m.thenAccept(f, rs[2]);
1572 +        final CompletableFuture<Void> h3 = m.acceptEither(f, f, rs[3]);
1573 +
1574 +        checkCompletedWithWrappedCancellationException(h0);
1575 +        checkCompletedWithWrappedCancellationException(h1);
1576 +        checkCompletedWithWrappedCancellationException(h2);
1577 +        checkCompletedWithWrappedCancellationException(h3);
1578 +        checkCancelled(f);
1579 +        for (NoopConsumer r : rs) r.assertNotInvoked();
1580 +    }}
1581 +
1582 +    /**
1583 +     * thenAccept result completes exceptionally if action does
1584 +     */
1585 +    public void testThenAccept_actionFailed() {
1586 +        for (ExecutionMode m : ExecutionMode.values())
1587 +        for (Integer v1 : new Integer[] { 1, null })
1588 +    {
1589 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1590 +        final FailingConsumer[] rs = new FailingConsumer[4];
1591 +        for (int i = 0; i < rs.length; i++) rs[i] = new FailingConsumer(m);
1592 +
1593 +        final CompletableFuture<Void> h0 = m.thenAccept(f, rs[0]);
1594 +        final CompletableFuture<Void> h1 = m.acceptEither(f, f, rs[1]);
1595 +        assertTrue(f.complete(v1));
1596 +        final CompletableFuture<Void> h2 = m.thenAccept(f, rs[2]);
1597 +        final CompletableFuture<Void> h3 = m.acceptEither(f, f, rs[3]);
1598 +
1599 +        checkCompletedWithWrappedCFException(h0);
1600 +        checkCompletedWithWrappedCFException(h1);
1601 +        checkCompletedWithWrappedCFException(h2);
1602 +        checkCompletedWithWrappedCFException(h3);
1603 +        checkCompletedNormally(f, v1);
1604 +    }}
1605 +
1606 +    /**
1607 +     * thenCombine result completes normally after normal completion
1608 +     * of sources
1609 +     */
1610 +    public void testThenCombine_normalCompletion() {
1611 +        for (ExecutionMode m : ExecutionMode.values())
1612 +        for (boolean fFirst : new boolean[] { true, false })
1613 +        for (Integer v1 : new Integer[] { 1, null })
1614 +        for (Integer v2 : new Integer[] { 2, null })
1615 +    {
1616 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1617 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1618 +        final SubtractFunction[] rs = new SubtractFunction[6];
1619 +        for (int i = 0; i < rs.length; i++) rs[i] = new SubtractFunction(m);
1620 +
1621 +        final CompletableFuture<Integer> fst =  fFirst ? f : g;
1622 +        final CompletableFuture<Integer> snd = !fFirst ? f : g;
1623 +        final Integer w1 =  fFirst ? v1 : v2;
1624 +        final Integer w2 = !fFirst ? v1 : v2;
1625 +
1626 +        final CompletableFuture<Integer> h0 = m.thenCombine(f, g, rs[0]);
1627 +        final CompletableFuture<Integer> h1 = m.thenCombine(fst, fst, rs[1]);
1628 +        assertTrue(fst.complete(w1));
1629 +        final CompletableFuture<Integer> h2 = m.thenCombine(f, g, rs[2]);
1630 +        final CompletableFuture<Integer> h3 = m.thenCombine(fst, fst, rs[3]);
1631 +        checkIncomplete(h0); rs[0].assertNotInvoked();
1632 +        checkIncomplete(h2); rs[2].assertNotInvoked();
1633 +        checkCompletedNormally(h1, subtract(w1, w1));
1634 +        checkCompletedNormally(h3, subtract(w1, w1));
1635 +        rs[1].assertValue(subtract(w1, w1));
1636 +        rs[3].assertValue(subtract(w1, w1));
1637 +        assertTrue(snd.complete(w2));
1638 +        final CompletableFuture<Integer> h4 = m.thenCombine(f, g, rs[4]);
1639 +
1640 +        checkCompletedNormally(h0, subtract(v1, v2));
1641 +        checkCompletedNormally(h2, subtract(v1, v2));
1642 +        checkCompletedNormally(h4, subtract(v1, v2));
1643 +        rs[0].assertValue(subtract(v1, v2));
1644 +        rs[2].assertValue(subtract(v1, v2));
1645 +        rs[4].assertValue(subtract(v1, v2));
1646 +
1647 +        checkCompletedNormally(f, v1);
1648 +        checkCompletedNormally(g, v2);
1649 +    }}
1650 +
1651 +    /**
1652 +     * thenCombine result completes exceptionally after exceptional
1653 +     * completion of either source
1654 +     */
1655 +    public void testThenCombine_exceptionalCompletion() throws Throwable {
1656 +        for (ExecutionMode m : ExecutionMode.values())
1657 +        for (boolean fFirst : new boolean[] { true, false })
1658 +        for (boolean failFirst : new boolean[] { true, false })
1659 +        for (Integer v1 : new Integer[] { 1, null })
1660 +    {
1661 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1662 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1663 +        final CFException ex = new CFException();
1664 +        final SubtractFunction r1 = new SubtractFunction(m);
1665 +        final SubtractFunction r2 = new SubtractFunction(m);
1666 +        final SubtractFunction r3 = new SubtractFunction(m);
1667 +
1668 +        final CompletableFuture<Integer> fst =  fFirst ? f : g;
1669 +        final CompletableFuture<Integer> snd = !fFirst ? f : g;
1670 +        final Callable<Boolean> complete1 = failFirst ?
1671 +            () -> fst.completeExceptionally(ex) :
1672 +            () -> fst.complete(v1);
1673 +        final Callable<Boolean> complete2 = failFirst ?
1674 +            () -> snd.complete(v1) :
1675 +            () -> snd.completeExceptionally(ex);
1676 +
1677 +        final CompletableFuture<Integer> h1 = m.thenCombine(f, g, r1);
1678 +        assertTrue(complete1.call());
1679 +        final CompletableFuture<Integer> h2 = m.thenCombine(f, g, r2);
1680 +        checkIncomplete(h1);
1681 +        checkIncomplete(h2);
1682 +        assertTrue(complete2.call());
1683 +        final CompletableFuture<Integer> h3 = m.thenCombine(f, g, r3);
1684 +
1685 +        checkCompletedWithWrappedException(h1, ex);
1686 +        checkCompletedWithWrappedException(h2, ex);
1687 +        checkCompletedWithWrappedException(h3, ex);
1688 +        r1.assertNotInvoked();
1689 +        r2.assertNotInvoked();
1690 +        r3.assertNotInvoked();
1691 +        checkCompletedNormally(failFirst ? snd : fst, v1);
1692 +        checkCompletedExceptionally(failFirst ? fst : snd, ex);
1693 +    }}
1694 +
1695 +    /**
1696 +     * thenCombine result completes exceptionally if either source cancelled
1697 +     */
1698 +    public void testThenCombine_sourceCancelled() throws Throwable {
1699 +        for (ExecutionMode m : ExecutionMode.values())
1700 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1701 +        for (boolean fFirst : new boolean[] { true, false })
1702 +        for (boolean failFirst : new boolean[] { true, false })
1703 +        for (Integer v1 : new Integer[] { 1, null })
1704 +    {
1705 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1706 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1707 +        final SubtractFunction r1 = new SubtractFunction(m);
1708 +        final SubtractFunction r2 = new SubtractFunction(m);
1709 +        final SubtractFunction r3 = new SubtractFunction(m);
1710 +
1711 +        final CompletableFuture<Integer> fst =  fFirst ? f : g;
1712 +        final CompletableFuture<Integer> snd = !fFirst ? f : g;
1713 +        final Callable<Boolean> complete1 = failFirst ?
1714 +            () -> fst.cancel(mayInterruptIfRunning) :
1715 +            () -> fst.complete(v1);
1716 +        final Callable<Boolean> complete2 = failFirst ?
1717 +            () -> snd.complete(v1) :
1718 +            () -> snd.cancel(mayInterruptIfRunning);
1719 +
1720 +        final CompletableFuture<Integer> h1 = m.thenCombine(f, g, r1);
1721 +        assertTrue(complete1.call());
1722 +        final CompletableFuture<Integer> h2 = m.thenCombine(f, g, r2);
1723 +        checkIncomplete(h1);
1724 +        checkIncomplete(h2);
1725 +        assertTrue(complete2.call());
1726 +        final CompletableFuture<Integer> h3 = m.thenCombine(f, g, r3);
1727 +
1728 +        checkCompletedWithWrappedCancellationException(h1);
1729 +        checkCompletedWithWrappedCancellationException(h2);
1730 +        checkCompletedWithWrappedCancellationException(h3);
1731 +        r1.assertNotInvoked();
1732 +        r2.assertNotInvoked();
1733 +        r3.assertNotInvoked();
1734 +        checkCompletedNormally(failFirst ? snd : fst, v1);
1735 +        checkCancelled(failFirst ? fst : snd);
1736 +    }}
1737 +
1738 +    /**
1739 +     * thenCombine result completes exceptionally if action does
1740 +     */
1741 +    public void testThenCombine_actionFailed() {
1742 +        for (ExecutionMode m : ExecutionMode.values())
1743 +        for (boolean fFirst : new boolean[] { true, false })
1744 +        for (Integer v1 : new Integer[] { 1, null })
1745 +        for (Integer v2 : new Integer[] { 2, null })
1746 +    {
1747 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1748 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1749 +        final FailingBiFunction r1 = new FailingBiFunction(m);
1750 +        final FailingBiFunction r2 = new FailingBiFunction(m);
1751 +        final FailingBiFunction r3 = new FailingBiFunction(m);
1752 +
1753 +        final CompletableFuture<Integer> fst =  fFirst ? f : g;
1754 +        final CompletableFuture<Integer> snd = !fFirst ? f : g;
1755 +        final Integer w1 =  fFirst ? v1 : v2;
1756 +        final Integer w2 = !fFirst ? v1 : v2;
1757 +
1758 +        final CompletableFuture<Integer> h1 = m.thenCombine(f, g, r1);
1759 +        assertTrue(fst.complete(w1));
1760 +        final CompletableFuture<Integer> h2 = m.thenCombine(f, g, r2);
1761 +        assertTrue(snd.complete(w2));
1762 +        final CompletableFuture<Integer> h3 = m.thenCombine(f, g, r3);
1763 +
1764 +        checkCompletedWithWrappedCFException(h1);
1765 +        checkCompletedWithWrappedCFException(h2);
1766 +        checkCompletedWithWrappedCFException(h3);
1767 +        r1.assertInvoked();
1768 +        r2.assertInvoked();
1769 +        r3.assertInvoked();
1770 +        checkCompletedNormally(f, v1);
1771 +        checkCompletedNormally(g, v2);
1772 +    }}
1773 +
1774 +    /**
1775 +     * thenAcceptBoth result completes normally after normal
1776 +     * completion of sources
1777 +     */
1778 +    public void testThenAcceptBoth_normalCompletion() {
1779 +        for (ExecutionMode m : ExecutionMode.values())
1780 +        for (boolean fFirst : new boolean[] { true, false })
1781 +        for (Integer v1 : new Integer[] { 1, null })
1782 +        for (Integer v2 : new Integer[] { 2, null })
1783 +    {
1784 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1785 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1786 +        final SubtractAction r1 = new SubtractAction(m);
1787 +        final SubtractAction r2 = new SubtractAction(m);
1788 +        final SubtractAction r3 = new SubtractAction(m);
1789 +
1790 +        final CompletableFuture<Integer> fst =  fFirst ? f : g;
1791 +        final CompletableFuture<Integer> snd = !fFirst ? f : g;
1792 +        final Integer w1 =  fFirst ? v1 : v2;
1793 +        final Integer w2 = !fFirst ? v1 : v2;
1794 +
1795 +        final CompletableFuture<Void> h1 = m.thenAcceptBoth(f, g, r1);
1796 +        assertTrue(fst.complete(w1));
1797 +        final CompletableFuture<Void> h2 = m.thenAcceptBoth(f, g, r2);
1798 +        checkIncomplete(h1);
1799 +        checkIncomplete(h2);
1800 +        r1.assertNotInvoked();
1801 +        r2.assertNotInvoked();
1802 +        assertTrue(snd.complete(w2));
1803 +        final CompletableFuture<Void> h3 = m.thenAcceptBoth(f, g, r3);
1804 +
1805 +        checkCompletedNormally(h1, null);
1806 +        checkCompletedNormally(h2, null);
1807 +        checkCompletedNormally(h3, null);
1808 +        r1.assertValue(subtract(v1, v2));
1809 +        r2.assertValue(subtract(v1, v2));
1810 +        r3.assertValue(subtract(v1, v2));
1811 +        checkCompletedNormally(f, v1);
1812 +        checkCompletedNormally(g, v2);
1813 +    }}
1814 +
1815 +    /**
1816 +     * thenAcceptBoth result completes exceptionally after exceptional
1817 +     * completion of either source
1818 +     */
1819 +    public void testThenAcceptBoth_exceptionalCompletion() throws Throwable {
1820 +        for (ExecutionMode m : ExecutionMode.values())
1821 +        for (boolean fFirst : new boolean[] { true, false })
1822 +        for (boolean failFirst : new boolean[] { true, false })
1823 +        for (Integer v1 : new Integer[] { 1, null })
1824 +    {
1825 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1826 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1827 +        final CFException ex = new CFException();
1828 +        final SubtractAction r1 = new SubtractAction(m);
1829 +        final SubtractAction r2 = new SubtractAction(m);
1830 +        final SubtractAction r3 = new SubtractAction(m);
1831 +
1832 +        final CompletableFuture<Integer> fst =  fFirst ? f : g;
1833 +        final CompletableFuture<Integer> snd = !fFirst ? f : g;
1834 +        final Callable<Boolean> complete1 = failFirst ?
1835 +            () -> fst.completeExceptionally(ex) :
1836 +            () -> fst.complete(v1);
1837 +        final Callable<Boolean> complete2 = failFirst ?
1838 +            () -> snd.complete(v1) :
1839 +            () -> snd.completeExceptionally(ex);
1840 +
1841 +        final CompletableFuture<Void> h1 = m.thenAcceptBoth(f, g, r1);
1842 +        assertTrue(complete1.call());
1843 +        final CompletableFuture<Void> h2 = m.thenAcceptBoth(f, g, r2);
1844 +        checkIncomplete(h1);
1845 +        checkIncomplete(h2);
1846 +        assertTrue(complete2.call());
1847 +        final CompletableFuture<Void> h3 = m.thenAcceptBoth(f, g, r3);
1848 +
1849 +        checkCompletedWithWrappedException(h1, ex);
1850 +        checkCompletedWithWrappedException(h2, ex);
1851 +        checkCompletedWithWrappedException(h3, ex);
1852 +        r1.assertNotInvoked();
1853 +        r2.assertNotInvoked();
1854 +        r3.assertNotInvoked();
1855 +        checkCompletedNormally(failFirst ? snd : fst, v1);
1856 +        checkCompletedExceptionally(failFirst ? fst : snd, ex);
1857 +    }}
1858 +
1859 +    /**
1860 +     * thenAcceptBoth result completes exceptionally if either source cancelled
1861 +     */
1862 +    public void testThenAcceptBoth_sourceCancelled() throws Throwable {
1863 +        for (ExecutionMode m : ExecutionMode.values())
1864 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1865 +        for (boolean fFirst : new boolean[] { true, false })
1866 +        for (boolean failFirst : new boolean[] { true, false })
1867 +        for (Integer v1 : new Integer[] { 1, null })
1868 +    {
1869 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1870 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1871 +        final SubtractAction r1 = new SubtractAction(m);
1872 +        final SubtractAction r2 = new SubtractAction(m);
1873 +        final SubtractAction r3 = new SubtractAction(m);
1874 +
1875 +        final CompletableFuture<Integer> fst =  fFirst ? f : g;
1876 +        final CompletableFuture<Integer> snd = !fFirst ? f : g;
1877 +        final Callable<Boolean> complete1 = failFirst ?
1878 +            () -> fst.cancel(mayInterruptIfRunning) :
1879 +            () -> fst.complete(v1);
1880 +        final Callable<Boolean> complete2 = failFirst ?
1881 +            () -> snd.complete(v1) :
1882 +            () -> snd.cancel(mayInterruptIfRunning);
1883 +
1884 +        final CompletableFuture<Void> h1 = m.thenAcceptBoth(f, g, r1);
1885 +        assertTrue(complete1.call());
1886 +        final CompletableFuture<Void> h2 = m.thenAcceptBoth(f, g, r2);
1887 +        checkIncomplete(h1);
1888 +        checkIncomplete(h2);
1889 +        assertTrue(complete2.call());
1890 +        final CompletableFuture<Void> h3 = m.thenAcceptBoth(f, g, r3);
1891 +
1892 +        checkCompletedWithWrappedCancellationException(h1);
1893 +        checkCompletedWithWrappedCancellationException(h2);
1894 +        checkCompletedWithWrappedCancellationException(h3);
1895 +        r1.assertNotInvoked();
1896 +        r2.assertNotInvoked();
1897 +        r3.assertNotInvoked();
1898 +        checkCompletedNormally(failFirst ? snd : fst, v1);
1899 +        checkCancelled(failFirst ? fst : snd);
1900 +    }}
1901 +
1902 +    /**
1903 +     * thenAcceptBoth result completes exceptionally if action does
1904 +     */
1905 +    public void testThenAcceptBoth_actionFailed() {
1906 +        for (ExecutionMode m : ExecutionMode.values())
1907 +        for (boolean fFirst : new boolean[] { true, false })
1908 +        for (Integer v1 : new Integer[] { 1, null })
1909 +        for (Integer v2 : new Integer[] { 2, null })
1910 +    {
1911 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1912 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1913 +        final FailingBiConsumer r1 = new FailingBiConsumer(m);
1914 +        final FailingBiConsumer r2 = new FailingBiConsumer(m);
1915 +        final FailingBiConsumer r3 = new FailingBiConsumer(m);
1916 +
1917 +        final CompletableFuture<Integer> fst =  fFirst ? f : g;
1918 +        final CompletableFuture<Integer> snd = !fFirst ? f : g;
1919 +        final Integer w1 =  fFirst ? v1 : v2;
1920 +        final Integer w2 = !fFirst ? v1 : v2;
1921 +
1922 +        final CompletableFuture<Void> h1 = m.thenAcceptBoth(f, g, r1);
1923 +        assertTrue(fst.complete(w1));
1924 +        final CompletableFuture<Void> h2 = m.thenAcceptBoth(f, g, r2);
1925 +        assertTrue(snd.complete(w2));
1926 +        final CompletableFuture<Void> h3 = m.thenAcceptBoth(f, g, r3);
1927 +
1928 +        checkCompletedWithWrappedCFException(h1);
1929 +        checkCompletedWithWrappedCFException(h2);
1930 +        checkCompletedWithWrappedCFException(h3);
1931 +        r1.assertInvoked();
1932 +        r2.assertInvoked();
1933 +        r3.assertInvoked();
1934 +        checkCompletedNormally(f, v1);
1935 +        checkCompletedNormally(g, v2);
1936 +    }}
1937 +
1938 +    /**
1939 +     * runAfterBoth result completes normally after normal
1940 +     * completion of sources
1941 +     */
1942 +    public void testRunAfterBoth_normalCompletion() {
1943 +        for (ExecutionMode m : ExecutionMode.values())
1944 +        for (boolean fFirst : new boolean[] { true, false })
1945 +        for (Integer v1 : new Integer[] { 1, null })
1946 +        for (Integer v2 : new Integer[] { 2, null })
1947 +    {
1948 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1949 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1950 +        final Noop r1 = new Noop(m);
1951 +        final Noop r2 = new Noop(m);
1952 +        final Noop r3 = new Noop(m);
1953 +
1954 +        final CompletableFuture<Integer> fst =  fFirst ? f : g;
1955 +        final CompletableFuture<Integer> snd = !fFirst ? f : g;
1956 +        final Integer w1 =  fFirst ? v1 : v2;
1957 +        final Integer w2 = !fFirst ? v1 : v2;
1958 +
1959 +        final CompletableFuture<Void> h1 = m.runAfterBoth(f, g, r1);
1960 +        assertTrue(fst.complete(w1));
1961 +        final CompletableFuture<Void> h2 = m.runAfterBoth(f, g, r2);
1962 +        checkIncomplete(h1);
1963 +        checkIncomplete(h2);
1964 +        r1.assertNotInvoked();
1965 +        r2.assertNotInvoked();
1966 +        assertTrue(snd.complete(w2));
1967 +        final CompletableFuture<Void> h3 = m.runAfterBoth(f, g, r3);
1968 +
1969 +        checkCompletedNormally(h1, null);
1970 +        checkCompletedNormally(h2, null);
1971 +        checkCompletedNormally(h3, null);
1972 +        r1.assertInvoked();
1973 +        r2.assertInvoked();
1974 +        r3.assertInvoked();
1975 +        checkCompletedNormally(f, v1);
1976 +        checkCompletedNormally(g, v2);
1977 +    }}
1978 +
1979 +    /**
1980 +     * runAfterBoth result completes exceptionally after exceptional
1981 +     * completion of either source
1982 +     */
1983 +    public void testRunAfterBoth_exceptionalCompletion() throws Throwable {
1984 +        for (ExecutionMode m : ExecutionMode.values())
1985 +        for (boolean fFirst : new boolean[] { true, false })
1986 +        for (boolean failFirst : new boolean[] { true, false })
1987 +        for (Integer v1 : new Integer[] { 1, null })
1988 +    {
1989 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1990 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1991 +        final CFException ex = new CFException();
1992 +        final Noop r1 = new Noop(m);
1993 +        final Noop r2 = new Noop(m);
1994 +        final Noop r3 = new Noop(m);
1995 +
1996 +        final CompletableFuture<Integer> fst =  fFirst ? f : g;
1997 +        final CompletableFuture<Integer> snd = !fFirst ? f : g;
1998 +        final Callable<Boolean> complete1 = failFirst ?
1999 +            () -> fst.completeExceptionally(ex) :
2000 +            () -> fst.complete(v1);
2001 +        final Callable<Boolean> complete2 = failFirst ?
2002 +            () -> snd.complete(v1) :
2003 +            () -> snd.completeExceptionally(ex);
2004 +
2005 +        final CompletableFuture<Void> h1 = m.runAfterBoth(f, g, r1);
2006 +        assertTrue(complete1.call());
2007 +        final CompletableFuture<Void> h2 = m.runAfterBoth(f, g, r2);
2008 +        checkIncomplete(h1);
2009 +        checkIncomplete(h2);
2010 +        assertTrue(complete2.call());
2011 +        final CompletableFuture<Void> h3 = m.runAfterBoth(f, g, r3);
2012 +
2013 +        checkCompletedWithWrappedException(h1, ex);
2014 +        checkCompletedWithWrappedException(h2, ex);
2015 +        checkCompletedWithWrappedException(h3, ex);
2016 +        r1.assertNotInvoked();
2017 +        r2.assertNotInvoked();
2018 +        r3.assertNotInvoked();
2019 +        checkCompletedNormally(failFirst ? snd : fst, v1);
2020 +        checkCompletedExceptionally(failFirst ? fst : snd, ex);
2021 +    }}
2022 +
2023 +    /**
2024 +     * runAfterBoth result completes exceptionally if either source cancelled
2025 +     */
2026 +    public void testRunAfterBoth_sourceCancelled() throws Throwable {
2027 +        for (ExecutionMode m : ExecutionMode.values())
2028 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2029 +        for (boolean fFirst : new boolean[] { true, false })
2030 +        for (boolean failFirst : new boolean[] { true, false })
2031 +        for (Integer v1 : new Integer[] { 1, null })
2032 +    {
2033 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2034 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2035 +        final Noop r1 = new Noop(m);
2036 +        final Noop r2 = new Noop(m);
2037 +        final Noop r3 = new Noop(m);
2038 +
2039 +        final CompletableFuture<Integer> fst =  fFirst ? f : g;
2040 +        final CompletableFuture<Integer> snd = !fFirst ? f : g;
2041 +        final Callable<Boolean> complete1 = failFirst ?
2042 +            () -> fst.cancel(mayInterruptIfRunning) :
2043 +            () -> fst.complete(v1);
2044 +        final Callable<Boolean> complete2 = failFirst ?
2045 +            () -> snd.complete(v1) :
2046 +            () -> snd.cancel(mayInterruptIfRunning);
2047 +
2048 +        final CompletableFuture<Void> h1 = m.runAfterBoth(f, g, r1);
2049 +        assertTrue(complete1.call());
2050 +        final CompletableFuture<Void> h2 = m.runAfterBoth(f, g, r2);
2051 +        checkIncomplete(h1);
2052 +        checkIncomplete(h2);
2053 +        assertTrue(complete2.call());
2054 +        final CompletableFuture<Void> h3 = m.runAfterBoth(f, g, r3);
2055 +
2056 +        checkCompletedWithWrappedCancellationException(h1);
2057 +        checkCompletedWithWrappedCancellationException(h2);
2058 +        checkCompletedWithWrappedCancellationException(h3);
2059 +        r1.assertNotInvoked();
2060 +        r2.assertNotInvoked();
2061 +        r3.assertNotInvoked();
2062 +        checkCompletedNormally(failFirst ? snd : fst, v1);
2063 +        checkCancelled(failFirst ? fst : snd);
2064 +    }}
2065 +
2066 +    /**
2067 +     * runAfterBoth result completes exceptionally if action does
2068 +     */
2069 +    public void testRunAfterBoth_actionFailed() {
2070 +        for (ExecutionMode m : ExecutionMode.values())
2071 +        for (boolean fFirst : new boolean[] { true, false })
2072 +        for (Integer v1 : new Integer[] { 1, null })
2073 +        for (Integer v2 : new Integer[] { 2, null })
2074 +    {
2075 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2076 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2077 +        final FailingRunnable r1 = new FailingRunnable(m);
2078 +        final FailingRunnable r2 = new FailingRunnable(m);
2079 +        final FailingRunnable r3 = new FailingRunnable(m);
2080 +
2081 +        final CompletableFuture<Integer> fst =  fFirst ? f : g;
2082 +        final CompletableFuture<Integer> snd = !fFirst ? f : g;
2083 +        final Integer w1 =  fFirst ? v1 : v2;
2084 +        final Integer w2 = !fFirst ? v1 : v2;
2085 +
2086 +        final CompletableFuture<Void> h1 = m.runAfterBoth(f, g, r1);
2087 +        assertTrue(fst.complete(w1));
2088 +        final CompletableFuture<Void> h2 = m.runAfterBoth(f, g, r2);
2089 +        assertTrue(snd.complete(w2));
2090 +        final CompletableFuture<Void> h3 = m.runAfterBoth(f, g, r3);
2091 +
2092 +        checkCompletedWithWrappedCFException(h1);
2093 +        checkCompletedWithWrappedCFException(h2);
2094 +        checkCompletedWithWrappedCFException(h3);
2095 +        r1.assertInvoked();
2096 +        r2.assertInvoked();
2097 +        r3.assertInvoked();
2098 +        checkCompletedNormally(f, v1);
2099 +        checkCompletedNormally(g, v2);
2100 +    }}
2101 +
2102 +    /**
2103 +     * applyToEither result completes normally after normal completion
2104 +     * of either source
2105 +     */
2106 +    public void testApplyToEither_normalCompletion() {
2107 +        for (ExecutionMode m : ExecutionMode.values())
2108 +        for (Integer v1 : new Integer[] { 1, null })
2109 +        for (Integer v2 : new Integer[] { 2, null })
2110 +    {
2111 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2112 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2113 +        final IncFunction[] rs = new IncFunction[6];
2114 +        for (int i = 0; i < rs.length; i++) rs[i] = new IncFunction(m);
2115 +
2116 +        final CompletableFuture<Integer> h0 = m.applyToEither(f, g, rs[0]);
2117 +        final CompletableFuture<Integer> h1 = m.applyToEither(g, f, rs[1]);
2118 +        checkIncomplete(h0);
2119 +        checkIncomplete(h1);
2120 +        rs[0].assertNotInvoked();
2121 +        rs[1].assertNotInvoked();
2122 +        f.complete(v1);
2123 +        checkCompletedNormally(h0, inc(v1));
2124 +        checkCompletedNormally(h1, inc(v1));
2125 +        final CompletableFuture<Integer> h2 = m.applyToEither(f, g, rs[2]);
2126 +        final CompletableFuture<Integer> h3 = m.applyToEither(g, f, rs[3]);
2127 +        checkCompletedNormally(h2, inc(v1));
2128 +        checkCompletedNormally(h3, inc(v1));
2129 +        g.complete(v2);
2130 +
2131 +        // unspecified behavior - both source completions available
2132 +        final CompletableFuture<Integer> h4 = m.applyToEither(f, g, rs[4]);
2133 +        final CompletableFuture<Integer> h5 = m.applyToEither(g, f, rs[5]);
2134 +        rs[4].assertValue(h4.join());
2135 +        rs[5].assertValue(h5.join());
2136 +        assertTrue(Objects.equals(inc(v1), h4.join()) ||
2137 +                   Objects.equals(inc(v2), h4.join()));
2138 +        assertTrue(Objects.equals(inc(v1), h5.join()) ||
2139 +                   Objects.equals(inc(v2), h5.join()));
2140 +
2141 +        checkCompletedNormally(f, v1);
2142 +        checkCompletedNormally(g, v2);
2143 +        checkCompletedNormally(h0, inc(v1));
2144 +        checkCompletedNormally(h1, inc(v1));
2145 +        checkCompletedNormally(h2, inc(v1));
2146 +        checkCompletedNormally(h3, inc(v1));
2147 +        for (int i = 0; i < 4; i++) rs[i].assertValue(inc(v1));
2148 +    }}
2149 +
2150 +    /**
2151 +     * applyToEither result completes exceptionally after exceptional
2152 +     * completion of either source
2153 +     */
2154 +    public void testApplyToEither_exceptionalCompletion() {
2155 +        for (ExecutionMode m : ExecutionMode.values())
2156 +        for (Integer v1 : new Integer[] { 1, null })
2157 +    {
2158 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2159 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2160 +        final CFException ex = new CFException();
2161 +        final IncFunction[] rs = new IncFunction[6];
2162 +        for (int i = 0; i < rs.length; i++) rs[i] = new IncFunction(m);
2163 +
2164 +        final CompletableFuture<Integer> h0 = m.applyToEither(f, g, rs[0]);
2165 +        final CompletableFuture<Integer> h1 = m.applyToEither(g, f, rs[1]);
2166 +        checkIncomplete(h0);
2167 +        checkIncomplete(h1);
2168 +        rs[0].assertNotInvoked();
2169 +        rs[1].assertNotInvoked();
2170 +        f.completeExceptionally(ex);
2171 +        checkCompletedWithWrappedException(h0, ex);
2172 +        checkCompletedWithWrappedException(h1, ex);
2173 +        final CompletableFuture<Integer> h2 = m.applyToEither(f, g, rs[2]);
2174 +        final CompletableFuture<Integer> h3 = m.applyToEither(g, f, rs[3]);
2175 +        checkCompletedWithWrappedException(h2, ex);
2176 +        checkCompletedWithWrappedException(h3, ex);
2177 +        g.complete(v1);
2178 +
2179 +        // unspecified behavior - both source completions available
2180 +        final CompletableFuture<Integer> h4 = m.applyToEither(f, g, rs[4]);
2181 +        final CompletableFuture<Integer> h5 = m.applyToEither(g, f, rs[5]);
2182 +        try {
2183 +            assertEquals(inc(v1), h4.join());
2184 +            rs[4].assertValue(inc(v1));
2185 +        } catch (CompletionException ok) {
2186 +            checkCompletedWithWrappedException(h4, ex);
2187 +            rs[4].assertNotInvoked();
2188 +        }
2189 +        try {
2190 +            assertEquals(inc(v1), h5.join());
2191 +            rs[5].assertValue(inc(v1));
2192 +        } catch (CompletionException ok) {
2193 +            checkCompletedWithWrappedException(h5, ex);
2194 +            rs[5].assertNotInvoked();
2195 +        }
2196 +
2197 +        checkCompletedExceptionally(f, ex);
2198 +        checkCompletedNormally(g, v1);
2199 +        checkCompletedWithWrappedException(h0, ex);
2200 +        checkCompletedWithWrappedException(h1, ex);
2201 +        checkCompletedWithWrappedException(h2, ex);
2202 +        checkCompletedWithWrappedException(h3, ex);
2203 +        checkCompletedWithWrappedException(h4, ex);
2204 +        for (int i = 0; i < 4; i++) rs[i].assertNotInvoked();
2205 +    }}
2206 +
2207 +    public void testApplyToEither_exceptionalCompletion2() {
2208 +        for (ExecutionMode m : ExecutionMode.values())
2209 +        for (boolean fFirst : new boolean[] { true, false })
2210 +        for (Integer v1 : new Integer[] { 1, null })
2211 +    {
2212 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2213 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2214 +        final CFException ex = new CFException();
2215 +        final IncFunction[] rs = new IncFunction[6];
2216 +        for (int i = 0; i < rs.length; i++) rs[i] = new IncFunction(m);
2217 +
2218 +        final CompletableFuture<Integer> h0 = m.applyToEither(f, g, rs[0]);
2219 +        final CompletableFuture<Integer> h1 = m.applyToEither(g, f, rs[1]);
2220 +        assertTrue(fFirst ? f.complete(v1) : g.completeExceptionally(ex));
2221 +        assertTrue(!fFirst ? f.complete(v1) : g.completeExceptionally(ex));
2222 +        final CompletableFuture<Integer> h2 = m.applyToEither(f, g, rs[2]);
2223 +        final CompletableFuture<Integer> h3 = m.applyToEither(g, f, rs[3]);
2224 +
2225 +        // unspecified behavior - both source completions available
2226 +        try {
2227 +            assertEquals(inc(v1), h0.join());
2228 +            rs[0].assertValue(inc(v1));
2229 +        } catch (CompletionException ok) {
2230 +            checkCompletedWithWrappedException(h0, ex);
2231 +            rs[0].assertNotInvoked();
2232 +        }
2233 +        try {
2234 +            assertEquals(inc(v1), h1.join());
2235 +            rs[1].assertValue(inc(v1));
2236 +        } catch (CompletionException ok) {
2237 +            checkCompletedWithWrappedException(h1, ex);
2238 +            rs[1].assertNotInvoked();
2239 +        }
2240 +        try {
2241 +            assertEquals(inc(v1), h2.join());
2242 +            rs[2].assertValue(inc(v1));
2243 +        } catch (CompletionException ok) {
2244 +            checkCompletedWithWrappedException(h2, ex);
2245 +            rs[2].assertNotInvoked();
2246 +        }
2247 +        try {
2248 +            assertEquals(inc(v1), h3.join());
2249 +            rs[3].assertValue(inc(v1));
2250 +        } catch (CompletionException ok) {
2251 +            checkCompletedWithWrappedException(h3, ex);
2252 +            rs[3].assertNotInvoked();
2253 +        }
2254 +
2255 +        checkCompletedNormally(f, v1);
2256 +        checkCompletedExceptionally(g, ex);
2257 +    }}
2258 +
2259 +    /**
2260 +     * applyToEither result completes exceptionally if either source cancelled
2261 +     */
2262 +    public void testApplyToEither_sourceCancelled() {
2263 +        for (ExecutionMode m : ExecutionMode.values())
2264 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2265 +        for (Integer v1 : new Integer[] { 1, null })
2266 +    {
2267 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2268 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2269 +        final IncFunction[] rs = new IncFunction[6];
2270 +        for (int i = 0; i < rs.length; i++) rs[i] = new IncFunction(m);
2271 +
2272 +        final CompletableFuture<Integer> h0 = m.applyToEither(f, g, rs[0]);
2273 +        final CompletableFuture<Integer> h1 = m.applyToEither(g, f, rs[1]);
2274 +        checkIncomplete(h0);
2275 +        checkIncomplete(h1);
2276 +        rs[0].assertNotInvoked();
2277 +        rs[1].assertNotInvoked();
2278 +        f.cancel(mayInterruptIfRunning);
2279 +        checkCompletedWithWrappedCancellationException(h0);
2280 +        checkCompletedWithWrappedCancellationException(h1);
2281 +        final CompletableFuture<Integer> h2 = m.applyToEither(f, g, rs[2]);
2282 +        final CompletableFuture<Integer> h3 = m.applyToEither(g, f, rs[3]);
2283 +        checkCompletedWithWrappedCancellationException(h2);
2284 +        checkCompletedWithWrappedCancellationException(h3);
2285 +        g.complete(v1);
2286 +
2287 +        // unspecified behavior - both source completions available
2288 +        final CompletableFuture<Integer> h4 = m.applyToEither(f, g, rs[4]);
2289 +        final CompletableFuture<Integer> h5 = m.applyToEither(g, f, rs[5]);
2290 +        try {
2291 +            assertEquals(inc(v1), h4.join());
2292 +            rs[4].assertValue(inc(v1));
2293 +        } catch (CompletionException ok) {
2294 +            checkCompletedWithWrappedCancellationException(h4);
2295 +            rs[4].assertNotInvoked();
2296 +        }
2297 +        try {
2298 +            assertEquals(inc(v1), h5.join());
2299 +            rs[5].assertValue(inc(v1));
2300 +        } catch (CompletionException ok) {
2301 +            checkCompletedWithWrappedCancellationException(h5);
2302 +            rs[5].assertNotInvoked();
2303 +        }
2304 +
2305 +        checkCancelled(f);
2306 +        checkCompletedNormally(g, v1);
2307 +        checkCompletedWithWrappedCancellationException(h0);
2308 +        checkCompletedWithWrappedCancellationException(h1);
2309 +        checkCompletedWithWrappedCancellationException(h2);
2310 +        checkCompletedWithWrappedCancellationException(h3);
2311 +        for (int i = 0; i < 4; i++) rs[i].assertNotInvoked();
2312 +    }}
2313 +
2314 +    public void testApplyToEither_sourceCancelled2() {
2315 +        for (ExecutionMode m : ExecutionMode.values())
2316 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2317 +        for (boolean fFirst : new boolean[] { true, false })
2318 +        for (Integer v1 : new Integer[] { 1, null })
2319 +    {
2320 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2321 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2322 +        final IncFunction[] rs = new IncFunction[6];
2323 +        for (int i = 0; i < rs.length; i++) rs[i] = new IncFunction(m);
2324 +
2325 +        final CompletableFuture<Integer> h0 = m.applyToEither(f, g, rs[0]);
2326 +        final CompletableFuture<Integer> h1 = m.applyToEither(g, f, rs[1]);
2327 +        assertTrue(fFirst ? f.complete(v1) : g.cancel(mayInterruptIfRunning));
2328 +        assertTrue(!fFirst ? f.complete(v1) : g.cancel(mayInterruptIfRunning));
2329 +        final CompletableFuture<Integer> h2 = m.applyToEither(f, g, rs[2]);
2330 +        final CompletableFuture<Integer> h3 = m.applyToEither(g, f, rs[3]);
2331 +
2332 +        // unspecified behavior - both source completions available
2333 +        try {
2334 +            assertEquals(inc(v1), h0.join());
2335 +            rs[0].assertValue(inc(v1));
2336 +        } catch (CompletionException ok) {
2337 +            checkCompletedWithWrappedCancellationException(h0);
2338 +            rs[0].assertNotInvoked();
2339 +        }
2340 +        try {
2341 +            assertEquals(inc(v1), h1.join());
2342 +            rs[1].assertValue(inc(v1));
2343 +        } catch (CompletionException ok) {
2344 +            checkCompletedWithWrappedCancellationException(h1);
2345 +            rs[1].assertNotInvoked();
2346 +        }
2347 +        try {
2348 +            assertEquals(inc(v1), h2.join());
2349 +            rs[2].assertValue(inc(v1));
2350 +        } catch (CompletionException ok) {
2351 +            checkCompletedWithWrappedCancellationException(h2);
2352 +            rs[2].assertNotInvoked();
2353 +        }
2354 +        try {
2355 +            assertEquals(inc(v1), h3.join());
2356 +            rs[3].assertValue(inc(v1));
2357 +        } catch (CompletionException ok) {
2358 +            checkCompletedWithWrappedCancellationException(h3);
2359 +            rs[3].assertNotInvoked();
2360 +        }
2361 +
2362 +        checkCompletedNormally(f, v1);
2363 +        checkCancelled(g);
2364 +    }}
2365 +
2366 +    /**
2367 +     * applyToEither result completes exceptionally if action does
2368 +     */
2369 +    public void testApplyToEither_actionFailed() {
2370 +        for (ExecutionMode m : ExecutionMode.values())
2371 +        for (Integer v1 : new Integer[] { 1, null })
2372 +        for (Integer v2 : new Integer[] { 2, null })
2373 +    {
2374 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2375 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2376 +        final FailingFunction[] rs = new FailingFunction[6];
2377 +        for (int i = 0; i < rs.length; i++) rs[i] = new FailingFunction(m);
2378 +
2379 +        final CompletableFuture<Integer> h0 = m.applyToEither(f, g, rs[0]);
2380 +        final CompletableFuture<Integer> h1 = m.applyToEither(g, f, rs[1]);
2381 +        f.complete(v1);
2382 +        final CompletableFuture<Integer> h2 = m.applyToEither(f, g, rs[2]);
2383 +        final CompletableFuture<Integer> h3 = m.applyToEither(g, f, rs[3]);
2384 +        checkCompletedWithWrappedCFException(h0);
2385 +        checkCompletedWithWrappedCFException(h1);
2386 +        checkCompletedWithWrappedCFException(h2);
2387 +        checkCompletedWithWrappedCFException(h3);
2388 +        for (int i = 0; i < 4; i++) rs[i].assertValue(v1);
2389 +
2390 +        g.complete(v2);
2391 +
2392 +        // unspecified behavior - both source completions available
2393 +        final CompletableFuture<Integer> h4 = m.applyToEither(f, g, rs[4]);
2394 +        final CompletableFuture<Integer> h5 = m.applyToEither(g, f, rs[5]);
2395 +
2396 +        checkCompletedWithWrappedCFException(h4);
2397 +        assertTrue(Objects.equals(v1, rs[4].value) ||
2398 +                   Objects.equals(v2, rs[4].value));
2399 +        checkCompletedWithWrappedCFException(h5);
2400 +        assertTrue(Objects.equals(v1, rs[5].value) ||
2401 +                   Objects.equals(v2, rs[5].value));
2402 +
2403 +        checkCompletedNormally(f, v1);
2404 +        checkCompletedNormally(g, v2);
2405 +    }}
2406 +
2407 +    /**
2408 +     * acceptEither result completes normally after normal completion
2409 +     * of either source
2410 +     */
2411 +    public void testAcceptEither_normalCompletion() {
2412 +        for (ExecutionMode m : ExecutionMode.values())
2413 +        for (Integer v1 : new Integer[] { 1, null })
2414 +        for (Integer v2 : new Integer[] { 2, null })
2415 +    {
2416 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2417 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2418 +        final NoopConsumer[] rs = new NoopConsumer[6];
2419 +        for (int i = 0; i < rs.length; i++) rs[i] = new NoopConsumer(m);
2420 +
2421 +        final CompletableFuture<Void> h0 = m.acceptEither(f, g, rs[0]);
2422 +        final CompletableFuture<Void> h1 = m.acceptEither(g, f, rs[1]);
2423 +        checkIncomplete(h0);
2424 +        checkIncomplete(h1);
2425 +        rs[0].assertNotInvoked();
2426 +        rs[1].assertNotInvoked();
2427 +        f.complete(v1);
2428 +        checkCompletedNormally(h0, null);
2429 +        checkCompletedNormally(h1, null);
2430 +        rs[0].assertValue(v1);
2431 +        rs[1].assertValue(v1);
2432 +        final CompletableFuture<Void> h2 = m.acceptEither(f, g, rs[2]);
2433 +        final CompletableFuture<Void> h3 = m.acceptEither(g, f, rs[3]);
2434 +        checkCompletedNormally(h2, null);
2435 +        checkCompletedNormally(h3, null);
2436 +        rs[2].assertValue(v1);
2437 +        rs[3].assertValue(v1);
2438 +        g.complete(v2);
2439 +
2440 +        // unspecified behavior - both source completions available
2441 +        final CompletableFuture<Void> h4 = m.acceptEither(f, g, rs[4]);
2442 +        final CompletableFuture<Void> h5 = m.acceptEither(g, f, rs[5]);
2443 +        checkCompletedNormally(h4, null);
2444 +        checkCompletedNormally(h5, null);
2445 +        assertTrue(Objects.equals(v1, rs[4].value) ||
2446 +                   Objects.equals(v2, rs[4].value));
2447 +        assertTrue(Objects.equals(v1, rs[5].value) ||
2448 +                   Objects.equals(v2, rs[5].value));
2449 +
2450 +        checkCompletedNormally(f, v1);
2451 +        checkCompletedNormally(g, v2);
2452 +        checkCompletedNormally(h0, null);
2453 +        checkCompletedNormally(h1, null);
2454 +        checkCompletedNormally(h2, null);
2455 +        checkCompletedNormally(h3, null);
2456 +        for (int i = 0; i < 4; i++) rs[i].assertValue(v1);
2457 +    }}
2458 +
2459 +    /**
2460 +     * acceptEither result completes exceptionally after exceptional
2461 +     * completion of either source
2462 +     */
2463 +    public void testAcceptEither_exceptionalCompletion() {
2464 +        for (ExecutionMode m : ExecutionMode.values())
2465 +        for (Integer v1 : new Integer[] { 1, null })
2466 +    {
2467 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2468 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2469 +        final CFException ex = new CFException();
2470 +        final NoopConsumer[] rs = new NoopConsumer[6];
2471 +        for (int i = 0; i < rs.length; i++) rs[i] = new NoopConsumer(m);
2472 +
2473 +        final CompletableFuture<Void> h0 = m.acceptEither(f, g, rs[0]);
2474 +        final CompletableFuture<Void> h1 = m.acceptEither(g, f, rs[1]);
2475 +        checkIncomplete(h0);
2476 +        checkIncomplete(h1);
2477 +        rs[0].assertNotInvoked();
2478 +        rs[1].assertNotInvoked();
2479 +        f.completeExceptionally(ex);
2480 +        checkCompletedWithWrappedException(h0, ex);
2481 +        checkCompletedWithWrappedException(h1, ex);
2482 +        final CompletableFuture<Void> h2 = m.acceptEither(f, g, rs[2]);
2483 +        final CompletableFuture<Void> h3 = m.acceptEither(g, f, rs[3]);
2484 +        checkCompletedWithWrappedException(h2, ex);
2485 +        checkCompletedWithWrappedException(h3, ex);
2486 +
2487 +        g.complete(v1);
2488 +
2489 +        // unspecified behavior - both source completions available
2490 +        final CompletableFuture<Void> h4 = m.acceptEither(f, g, rs[4]);
2491 +        final CompletableFuture<Void> h5 = m.acceptEither(g, f, rs[5]);
2492 +        try {
2493 +            assertNull(h4.join());
2494 +            rs[4].assertValue(v1);
2495 +        } catch (CompletionException ok) {
2496 +            checkCompletedWithWrappedException(h4, ex);
2497 +            rs[4].assertNotInvoked();
2498 +        }
2499 +        try {
2500 +            assertNull(h5.join());
2501 +            rs[5].assertValue(v1);
2502 +        } catch (CompletionException ok) {
2503 +            checkCompletedWithWrappedException(h5, ex);
2504 +            rs[5].assertNotInvoked();
2505 +        }
2506 +
2507 +        checkCompletedExceptionally(f, ex);
2508 +        checkCompletedNormally(g, v1);
2509 +        checkCompletedWithWrappedException(h0, ex);
2510 +        checkCompletedWithWrappedException(h1, ex);
2511 +        checkCompletedWithWrappedException(h2, ex);
2512 +        checkCompletedWithWrappedException(h3, ex);
2513 +        checkCompletedWithWrappedException(h4, ex);
2514 +        for (int i = 0; i < 4; i++) rs[i].assertNotInvoked();
2515 +    }}
2516 +
2517 +    public void testAcceptEither_exceptionalCompletion2() {
2518 +        for (ExecutionMode m : ExecutionMode.values())
2519 +        for (boolean fFirst : new boolean[] { true, false })
2520 +        for (Integer v1 : new Integer[] { 1, null })
2521 +    {
2522 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2523 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2524 +        final CFException ex = new CFException();
2525 +        final NoopConsumer[] rs = new NoopConsumer[6];
2526 +        for (int i = 0; i < rs.length; i++) rs[i] = new NoopConsumer(m);
2527 +
2528 +        final CompletableFuture<Void> h0 = m.acceptEither(f, g, rs[0]);
2529 +        final CompletableFuture<Void> h1 = m.acceptEither(g, f, rs[1]);
2530 +        assertTrue(fFirst ? f.complete(v1) : g.completeExceptionally(ex));
2531 +        assertTrue(!fFirst ? f.complete(v1) : g.completeExceptionally(ex));
2532 +        final CompletableFuture<Void> h2 = m.acceptEither(f, g, rs[2]);
2533 +        final CompletableFuture<Void> h3 = m.acceptEither(g, f, rs[3]);
2534 +
2535 +        // unspecified behavior - both source completions available
2536 +        try {
2537 +            assertEquals(null, h0.join());
2538 +            rs[0].assertValue(v1);
2539 +        } catch (CompletionException ok) {
2540 +            checkCompletedWithWrappedException(h0, ex);
2541 +            rs[0].assertNotInvoked();
2542 +        }
2543 +        try {
2544 +            assertEquals(null, h1.join());
2545 +            rs[1].assertValue(v1);
2546 +        } catch (CompletionException ok) {
2547 +            checkCompletedWithWrappedException(h1, ex);
2548 +            rs[1].assertNotInvoked();
2549 +        }
2550 +        try {
2551 +            assertEquals(null, h2.join());
2552 +            rs[2].assertValue(v1);
2553 +        } catch (CompletionException ok) {
2554 +            checkCompletedWithWrappedException(h2, ex);
2555 +            rs[2].assertNotInvoked();
2556 +        }
2557 +        try {
2558 +            assertEquals(null, h3.join());
2559 +            rs[3].assertValue(v1);
2560 +        } catch (CompletionException ok) {
2561 +            checkCompletedWithWrappedException(h3, ex);
2562 +            rs[3].assertNotInvoked();
2563 +        }
2564 +
2565 +        checkCompletedNormally(f, v1);
2566 +        checkCompletedExceptionally(g, ex);
2567 +    }}
2568 +
2569 +    /**
2570 +     * acceptEither result completes exceptionally if either source cancelled
2571 +     */
2572 +    public void testAcceptEither_sourceCancelled() {
2573 +        for (ExecutionMode m : ExecutionMode.values())
2574 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2575 +        for (Integer v1 : new Integer[] { 1, null })
2576 +    {
2577 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2578 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2579 +        final NoopConsumer[] rs = new NoopConsumer[6];
2580 +        for (int i = 0; i < rs.length; i++) rs[i] = new NoopConsumer(m);
2581 +
2582 +        final CompletableFuture<Void> h0 = m.acceptEither(f, g, rs[0]);
2583 +        final CompletableFuture<Void> h1 = m.acceptEither(g, f, rs[1]);
2584 +        checkIncomplete(h0);
2585 +        checkIncomplete(h1);
2586 +        rs[0].assertNotInvoked();
2587 +        rs[1].assertNotInvoked();
2588 +        f.cancel(mayInterruptIfRunning);
2589 +        checkCompletedWithWrappedCancellationException(h0);
2590 +        checkCompletedWithWrappedCancellationException(h1);
2591 +        final CompletableFuture<Void> h2 = m.acceptEither(f, g, rs[2]);
2592 +        final CompletableFuture<Void> h3 = m.acceptEither(g, f, rs[3]);
2593 +        checkCompletedWithWrappedCancellationException(h2);
2594 +        checkCompletedWithWrappedCancellationException(h3);
2595 +
2596 +        g.complete(v1);
2597 +
2598 +        // unspecified behavior - both source completions available
2599 +        final CompletableFuture<Void> h4 = m.acceptEither(f, g, rs[4]);
2600 +        final CompletableFuture<Void> h5 = m.acceptEither(g, f, rs[5]);
2601 +        try {
2602 +            assertNull(h4.join());
2603 +            rs[4].assertValue(v1);
2604 +        } catch (CompletionException ok) {
2605 +            checkCompletedWithWrappedCancellationException(h4);
2606 +            rs[4].assertNotInvoked();
2607 +        }
2608 +        try {
2609 +            assertNull(h5.join());
2610 +            rs[5].assertValue(v1);
2611 +        } catch (CompletionException ok) {
2612 +            checkCompletedWithWrappedCancellationException(h5);
2613 +            rs[5].assertNotInvoked();
2614 +        }
2615 +
2616 +        checkCancelled(f);
2617 +        checkCompletedNormally(g, v1);
2618 +        checkCompletedWithWrappedCancellationException(h0);
2619 +        checkCompletedWithWrappedCancellationException(h1);
2620 +        checkCompletedWithWrappedCancellationException(h2);
2621 +        checkCompletedWithWrappedCancellationException(h3);
2622 +        for (int i = 0; i < 4; i++) rs[i].assertNotInvoked();
2623 +    }}
2624 +
2625 +    /**
2626 +     * acceptEither result completes exceptionally if action does
2627 +     */
2628 +    public void testAcceptEither_actionFailed() {
2629 +        for (ExecutionMode m : ExecutionMode.values())
2630 +        for (Integer v1 : new Integer[] { 1, null })
2631 +        for (Integer v2 : new Integer[] { 2, null })
2632 +    {
2633 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2634 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2635 +        final FailingConsumer[] rs = new FailingConsumer[6];
2636 +        for (int i = 0; i < rs.length; i++) rs[i] = new FailingConsumer(m);
2637 +
2638 +        final CompletableFuture<Void> h0 = m.acceptEither(f, g, rs[0]);
2639 +        final CompletableFuture<Void> h1 = m.acceptEither(g, f, rs[1]);
2640 +        f.complete(v1);
2641 +        final CompletableFuture<Void> h2 = m.acceptEither(f, g, rs[2]);
2642 +        final CompletableFuture<Void> h3 = m.acceptEither(g, f, rs[3]);
2643 +        checkCompletedWithWrappedCFException(h0);
2644 +        checkCompletedWithWrappedCFException(h1);
2645 +        checkCompletedWithWrappedCFException(h2);
2646 +        checkCompletedWithWrappedCFException(h3);
2647 +        for (int i = 0; i < 4; i++) rs[i].assertValue(v1);
2648 +
2649 +        g.complete(v2);
2650 +
2651 +        // unspecified behavior - both source completions available
2652 +        final CompletableFuture<Void> h4 = m.acceptEither(f, g, rs[4]);
2653 +        final CompletableFuture<Void> h5 = m.acceptEither(g, f, rs[5]);
2654 +
2655 +        checkCompletedWithWrappedCFException(h4);
2656 +        assertTrue(Objects.equals(v1, rs[4].value) ||
2657 +                   Objects.equals(v2, rs[4].value));
2658 +        checkCompletedWithWrappedCFException(h5);
2659 +        assertTrue(Objects.equals(v1, rs[5].value) ||
2660 +                   Objects.equals(v2, rs[5].value));
2661 +
2662 +        checkCompletedNormally(f, v1);
2663 +        checkCompletedNormally(g, v2);
2664 +    }}
2665 +
2666 +    /**
2667 +     * runAfterEither result completes normally after normal completion
2668 +     * of either source
2669 +     */
2670 +    public void testRunAfterEither_normalCompletion() {
2671 +        for (ExecutionMode m : ExecutionMode.values())
2672 +        for (Integer v1 : new Integer[] { 1, null })
2673 +        for (Integer v2 : new Integer[] { 2, null })
2674 +    {
2675 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2676 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2677 +        final Noop[] rs = new Noop[6];
2678 +        for (int i = 0; i < rs.length; i++) rs[i] = new Noop(m);
2679 +
2680 +        final CompletableFuture<Void> h0 = m.runAfterEither(f, g, rs[0]);
2681 +        final CompletableFuture<Void> h1 = m.runAfterEither(g, f, rs[1]);
2682 +        checkIncomplete(h0);
2683 +        checkIncomplete(h1);
2684 +        rs[0].assertNotInvoked();
2685 +        rs[1].assertNotInvoked();
2686 +        f.complete(v1);
2687 +        checkCompletedNormally(h0, null);
2688 +        checkCompletedNormally(h1, null);
2689 +        rs[0].assertInvoked();
2690 +        rs[1].assertInvoked();
2691 +        final CompletableFuture<Void> h2 = m.runAfterEither(f, g, rs[2]);
2692 +        final CompletableFuture<Void> h3 = m.runAfterEither(g, f, rs[3]);
2693 +        checkCompletedNormally(h2, null);
2694 +        checkCompletedNormally(h3, null);
2695 +        rs[2].assertInvoked();
2696 +        rs[3].assertInvoked();
2697 +
2698 +        g.complete(v2);
2699 +
2700 +        final CompletableFuture<Void> h4 = m.runAfterEither(f, g, rs[4]);
2701 +        final CompletableFuture<Void> h5 = m.runAfterEither(g, f, rs[5]);
2702 +
2703 +        checkCompletedNormally(f, v1);
2704 +        checkCompletedNormally(g, v2);
2705 +        checkCompletedNormally(h0, null);
2706 +        checkCompletedNormally(h1, null);
2707 +        checkCompletedNormally(h2, null);
2708 +        checkCompletedNormally(h3, null);
2709 +        checkCompletedNormally(h4, null);
2710 +        checkCompletedNormally(h5, null);
2711 +        for (int i = 0; i < 6; i++) rs[i].assertInvoked();
2712 +    }}
2713 +
2714 +    /**
2715 +     * runAfterEither result completes exceptionally after exceptional
2716 +     * completion of either source
2717 +     */
2718 +    public void testRunAfterEither_exceptionalCompletion() {
2719 +        for (ExecutionMode m : ExecutionMode.values())
2720 +        for (Integer v1 : new Integer[] { 1, null })
2721 +    {
2722 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2723 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2724 +        final CFException ex = new CFException();
2725 +        final Noop[] rs = new Noop[6];
2726 +        for (int i = 0; i < rs.length; i++) rs[i] = new Noop(m);
2727 +
2728 +        final CompletableFuture<Void> h0 = m.runAfterEither(f, g, rs[0]);
2729 +        final CompletableFuture<Void> h1 = m.runAfterEither(g, f, rs[1]);
2730 +        checkIncomplete(h0);
2731 +        checkIncomplete(h1);
2732 +        rs[0].assertNotInvoked();
2733 +        rs[1].assertNotInvoked();
2734 +        assertTrue(f.completeExceptionally(ex));
2735 +        checkCompletedWithWrappedException(h0, ex);
2736 +        checkCompletedWithWrappedException(h1, ex);
2737 +        final CompletableFuture<Void> h2 = m.runAfterEither(f, g, rs[2]);
2738 +        final CompletableFuture<Void> h3 = m.runAfterEither(g, f, rs[3]);
2739 +        checkCompletedWithWrappedException(h2, ex);
2740 +        checkCompletedWithWrappedException(h3, ex);
2741 +
2742 +        assertTrue(g.complete(v1));
2743 +
2744 +        // unspecified behavior - both source completions available
2745 +        final CompletableFuture<Void> h4 = m.runAfterEither(f, g, rs[4]);
2746 +        final CompletableFuture<Void> h5 = m.runAfterEither(g, f, rs[5]);
2747 +        try {
2748 +            assertNull(h4.join());
2749 +            rs[4].assertInvoked();
2750 +        } catch (CompletionException ok) {
2751 +            checkCompletedWithWrappedException(h4, ex);
2752 +            rs[4].assertNotInvoked();
2753 +        }
2754 +        try {
2755 +            assertNull(h5.join());
2756 +            rs[5].assertInvoked();
2757 +        } catch (CompletionException ok) {
2758 +            checkCompletedWithWrappedException(h5, ex);
2759 +            rs[5].assertNotInvoked();
2760 +        }
2761 +
2762 +        checkCompletedExceptionally(f, ex);
2763 +        checkCompletedNormally(g, v1);
2764 +        checkCompletedWithWrappedException(h0, ex);
2765 +        checkCompletedWithWrappedException(h1, ex);
2766 +        checkCompletedWithWrappedException(h2, ex);
2767 +        checkCompletedWithWrappedException(h3, ex);
2768 +        checkCompletedWithWrappedException(h4, ex);
2769 +        for (int i = 0; i < 4; i++) rs[i].assertNotInvoked();
2770 +    }}
2771 +
2772 +    public void testRunAfterEither_exceptionalCompletion2() {
2773 +        for (ExecutionMode m : ExecutionMode.values())
2774 +        for (boolean fFirst : new boolean[] { true, false })
2775 +        for (Integer v1 : new Integer[] { 1, null })
2776 +    {
2777 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2778 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2779 +        final CFException ex = new CFException();
2780 +        final Noop[] rs = new Noop[6];
2781 +        for (int i = 0; i < rs.length; i++) rs[i] = new Noop(m);
2782 +
2783 +        final CompletableFuture<Void> h0 = m.runAfterEither(f, g, rs[0]);
2784 +        final CompletableFuture<Void> h1 = m.runAfterEither(g, f, rs[1]);
2785 +        assertTrue( fFirst ? f.complete(v1) : g.completeExceptionally(ex));
2786 +        assertTrue(!fFirst ? f.complete(v1) : g.completeExceptionally(ex));
2787 +        final CompletableFuture<Void> h2 = m.runAfterEither(f, g, rs[2]);
2788 +        final CompletableFuture<Void> h3 = m.runAfterEither(g, f, rs[3]);
2789 +
2790 +        // unspecified behavior - both source completions available
2791 +        try {
2792 +            assertEquals(null, h0.join());
2793 +            rs[0].assertInvoked();
2794 +        } catch (CompletionException ok) {
2795 +            checkCompletedWithWrappedException(h0, ex);
2796 +            rs[0].assertNotInvoked();
2797 +        }
2798 +        try {
2799 +            assertEquals(null, h1.join());
2800 +            rs[1].assertInvoked();
2801 +        } catch (CompletionException ok) {
2802 +            checkCompletedWithWrappedException(h1, ex);
2803 +            rs[1].assertNotInvoked();
2804 +        }
2805 +        try {
2806 +            assertEquals(null, h2.join());
2807 +            rs[2].assertInvoked();
2808 +        } catch (CompletionException ok) {
2809 +            checkCompletedWithWrappedException(h2, ex);
2810 +            rs[2].assertNotInvoked();
2811 +        }
2812 +        try {
2813 +            assertEquals(null, h3.join());
2814 +            rs[3].assertInvoked();
2815 +        } catch (CompletionException ok) {
2816 +            checkCompletedWithWrappedException(h3, ex);
2817 +            rs[3].assertNotInvoked();
2818 +        }
2819 +
2820 +        checkCompletedNormally(f, v1);
2821 +        checkCompletedExceptionally(g, ex);
2822 +    }}
2823 +
2824 +    /**
2825 +     * runAfterEither result completes exceptionally if either source cancelled
2826 +     */
2827 +    public void testRunAfterEither_sourceCancelled() {
2828 +        for (ExecutionMode m : ExecutionMode.values())
2829 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2830 +        for (Integer v1 : new Integer[] { 1, null })
2831 +    {
2832 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2833 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2834 +        final Noop[] rs = new Noop[6];
2835 +        for (int i = 0; i < rs.length; i++) rs[i] = new Noop(m);
2836 +
2837 +        final CompletableFuture<Void> h0 = m.runAfterEither(f, g, rs[0]);
2838 +        final CompletableFuture<Void> h1 = m.runAfterEither(g, f, rs[1]);
2839 +        checkIncomplete(h0);
2840 +        checkIncomplete(h1);
2841 +        rs[0].assertNotInvoked();
2842 +        rs[1].assertNotInvoked();
2843 +        f.cancel(mayInterruptIfRunning);
2844 +        checkCompletedWithWrappedCancellationException(h0);
2845 +        checkCompletedWithWrappedCancellationException(h1);
2846 +        final CompletableFuture<Void> h2 = m.runAfterEither(f, g, rs[2]);
2847 +        final CompletableFuture<Void> h3 = m.runAfterEither(g, f, rs[3]);
2848 +        checkCompletedWithWrappedCancellationException(h2);
2849 +        checkCompletedWithWrappedCancellationException(h3);
2850 +
2851 +        assertTrue(g.complete(v1));
2852 +
2853 +        // unspecified behavior - both source completions available
2854 +        final CompletableFuture<Void> h4 = m.runAfterEither(f, g, rs[4]);
2855 +        final CompletableFuture<Void> h5 = m.runAfterEither(g, f, rs[5]);
2856 +        try {
2857 +            assertNull(h4.join());
2858 +            rs[4].assertInvoked();
2859 +        } catch (CompletionException ok) {
2860 +            checkCompletedWithWrappedCancellationException(h4);
2861 +            rs[4].assertNotInvoked();
2862 +        }
2863 +        try {
2864 +            assertNull(h5.join());
2865 +            rs[5].assertInvoked();
2866 +        } catch (CompletionException ok) {
2867 +            checkCompletedWithWrappedCancellationException(h5);
2868 +            rs[5].assertNotInvoked();
2869 +        }
2870 +
2871 +        checkCancelled(f);
2872 +        checkCompletedNormally(g, v1);
2873 +        checkCompletedWithWrappedCancellationException(h0);
2874 +        checkCompletedWithWrappedCancellationException(h1);
2875 +        checkCompletedWithWrappedCancellationException(h2);
2876 +        checkCompletedWithWrappedCancellationException(h3);
2877 +        for (int i = 0; i < 4; i++) rs[i].assertNotInvoked();
2878 +    }}
2879 +
2880 +    /**
2881 +     * runAfterEither result completes exceptionally if action does
2882 +     */
2883 +    public void testRunAfterEither_actionFailed() {
2884 +        for (ExecutionMode m : ExecutionMode.values())
2885 +        for (Integer v1 : new Integer[] { 1, null })
2886 +        for (Integer v2 : new Integer[] { 2, null })
2887 +    {
2888 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2889 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2890 +        final FailingRunnable[] rs = new FailingRunnable[6];
2891 +        for (int i = 0; i < rs.length; i++) rs[i] = new FailingRunnable(m);
2892 +
2893 +        final CompletableFuture<Void> h0 = m.runAfterEither(f, g, rs[0]);
2894 +        final CompletableFuture<Void> h1 = m.runAfterEither(g, f, rs[1]);
2895 +        assertTrue(f.complete(v1));
2896 +        final CompletableFuture<Void> h2 = m.runAfterEither(f, g, rs[2]);
2897 +        final CompletableFuture<Void> h3 = m.runAfterEither(g, f, rs[3]);
2898 +        checkCompletedWithWrappedCFException(h0);
2899 +        checkCompletedWithWrappedCFException(h1);
2900 +        checkCompletedWithWrappedCFException(h2);
2901 +        checkCompletedWithWrappedCFException(h3);
2902 +        for (int i = 0; i < 4; i++) rs[i].assertInvoked();
2903 +        assertTrue(g.complete(v2));
2904 +        final CompletableFuture<Void> h4 = m.runAfterEither(f, g, rs[4]);
2905 +        final CompletableFuture<Void> h5 = m.runAfterEither(g, f, rs[5]);
2906 +        checkCompletedWithWrappedCFException(h4);
2907 +        checkCompletedWithWrappedCFException(h5);
2908 +
2909 +        checkCompletedNormally(f, v1);
2910 +        checkCompletedNormally(g, v2);
2911 +        for (int i = 0; i < 6; i++) rs[i].assertInvoked();
2912 +    }}
2913 +
2914 +    /**
2915 +     * thenCompose result completes normally after normal completion of source
2916 +     */
2917 +    public void testThenCompose_normalCompletion() {
2918 +        for (ExecutionMode m : ExecutionMode.values())
2919 +        for (boolean createIncomplete : new boolean[] { true, false })
2920 +        for (Integer v1 : new Integer[] { 1, null })
2921 +    {
2922 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2923 +        final CompletableFutureInc r = new CompletableFutureInc(m);
2924 +        if (!createIncomplete) assertTrue(f.complete(v1));
2925 +        final CompletableFuture<Integer> g = m.thenCompose(f, r);
2926 +        if (createIncomplete) assertTrue(f.complete(v1));
2927 +
2928 +        checkCompletedNormally(g, inc(v1));
2929 +        checkCompletedNormally(f, v1);
2930 +        r.assertValue(v1);
2931 +    }}
2932 +
2933 +    /**
2934 +     * thenCompose result completes exceptionally after exceptional
2935 +     * completion of source
2936 +     */
2937 +    public void testThenCompose_exceptionalCompletion() {
2938 +        for (ExecutionMode m : ExecutionMode.values())
2939 +        for (boolean createIncomplete : new boolean[] { true, false })
2940 +    {
2941 +        final CFException ex = new CFException();
2942 +        final CompletableFutureInc r = new CompletableFutureInc(m);
2943 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2944 +        if (!createIncomplete) f.completeExceptionally(ex);
2945 +        final CompletableFuture<Integer> g = m.thenCompose(f, r);
2946 +        if (createIncomplete) f.completeExceptionally(ex);
2947 +
2948 +        checkCompletedWithWrappedException(g, ex);
2949 +        checkCompletedExceptionally(f, ex);
2950 +        r.assertNotInvoked();
2951 +    }}
2952 +
2953 +    /**
2954 +     * thenCompose result completes exceptionally if action does
2955 +     */
2956 +    public void testThenCompose_actionFailed() {
2957 +        for (ExecutionMode m : ExecutionMode.values())
2958 +        for (boolean createIncomplete : new boolean[] { true, false })
2959 +        for (Integer v1 : new Integer[] { 1, null })
2960 +    {
2961 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2962 +        final FailingCompletableFutureFunction r
2963 +            = new FailingCompletableFutureFunction(m);
2964 +        if (!createIncomplete) assertTrue(f.complete(v1));
2965 +        final CompletableFuture<Integer> g = m.thenCompose(f, r);
2966 +        if (createIncomplete) assertTrue(f.complete(v1));
2967 +
2968 +        checkCompletedWithWrappedCFException(g);
2969 +        checkCompletedNormally(f, v1);
2970 +    }}
2971 +
2972 +    /**
2973 +     * thenCompose result completes exceptionally if source cancelled
2974 +     */
2975 +    public void testThenCompose_sourceCancelled() {
2976 +        for (ExecutionMode m : ExecutionMode.values())
2977 +        for (boolean createIncomplete : new boolean[] { true, false })
2978 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2979 +    {
2980 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2981 +        final CompletableFutureInc r = new CompletableFutureInc(m);
2982 +        if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
2983 +        final CompletableFuture<Integer> g = m.thenCompose(f, r);
2984 +        if (createIncomplete) {
2985 +            checkIncomplete(g);
2986 +            assertTrue(f.cancel(mayInterruptIfRunning));
2987 +        }
2988 +
2989 +        checkCompletedWithWrappedCancellationException(g);
2990 +        checkCancelled(f);
2991 +    }}
2992 +
2993 +    // other static methods
2994 +
2995 +    /**
2996 +     * allOf(no component futures) returns a future completed normally
2997 +     * with the value null
2998 +     */
2999 +    public void testAllOf_empty() throws Exception {
3000 +        CompletableFuture<Void> f = CompletableFuture.allOf();
3001 +        checkCompletedNormally(f, null);
3002 +    }
3003 +
3004 +    /**
3005 +     * allOf returns a future completed normally with the value null
3006 +     * when all components complete normally
3007 +     */
3008 +    public void testAllOf_normal() throws Exception {
3009 +        for (int k = 1; k < 10; k++) {
3010 +            CompletableFuture<Integer>[] fs
3011 +                = (CompletableFuture<Integer>[]) new CompletableFuture[k];
3012 +            for (int i = 0; i < k; i++)
3013 +                fs[i] = new CompletableFuture<>();
3014 +            CompletableFuture<Void> f = CompletableFuture.allOf(fs);
3015 +            for (int i = 0; i < k; i++) {
3016 +                checkIncomplete(f);
3017 +                checkIncomplete(CompletableFuture.allOf(fs));
3018 +                fs[i].complete(one);
3019 +            }
3020 +            checkCompletedNormally(f, null);
3021 +            checkCompletedNormally(CompletableFuture.allOf(fs), null);
3022 +        }
3023      }
3024 +
3025 +    public void testAllOf_backwards() throws Exception {
3026 +        for (int k = 1; k < 10; k++) {
3027 +            CompletableFuture<Integer>[] fs
3028 +                = (CompletableFuture<Integer>[]) new CompletableFuture[k];
3029 +            for (int i = 0; i < k; i++)
3030 +                fs[i] = new CompletableFuture<>();
3031 +            CompletableFuture<Void> f = CompletableFuture.allOf(fs);
3032 +            for (int i = k - 1; i >= 0; i--) {
3033 +                checkIncomplete(f);
3034 +                checkIncomplete(CompletableFuture.allOf(fs));
3035 +                fs[i].complete(one);
3036 +            }
3037 +            checkCompletedNormally(f, null);
3038 +            checkCompletedNormally(CompletableFuture.allOf(fs), null);
3039 +        }
3040 +    }
3041 +
3042 +    public void testAllOf_exceptional() throws Exception {
3043 +        for (int k = 1; k < 10; k++) {
3044 +            CompletableFuture<Integer>[] fs
3045 +                = (CompletableFuture<Integer>[]) new CompletableFuture[k];
3046 +            CFException ex = new CFException();
3047 +            for (int i = 0; i < k; i++)
3048 +                fs[i] = new CompletableFuture<>();
3049 +            CompletableFuture<Void> f = CompletableFuture.allOf(fs);
3050 +            for (int i = 0; i < k; i++) {
3051 +                checkIncomplete(f);
3052 +                checkIncomplete(CompletableFuture.allOf(fs));
3053 +                if (i != k/2) {
3054 +                    fs[i].complete(i);
3055 +                    checkCompletedNormally(fs[i], i);
3056 +                } else {
3057 +                    fs[i].completeExceptionally(ex);
3058 +                    checkCompletedExceptionally(fs[i], ex);
3059 +                }
3060 +            }
3061 +            checkCompletedWithWrappedException(f, ex);
3062 +            checkCompletedWithWrappedException(CompletableFuture.allOf(fs), ex);
3063 +        }
3064 +    }
3065 +
3066 +    /**
3067 +     * anyOf(no component futures) returns an incomplete future
3068 +     */
3069 +    public void testAnyOf_empty() throws Exception {
3070 +        for (Integer v1 : new Integer[] { 1, null })
3071 +    {
3072 +        CompletableFuture<Object> f = CompletableFuture.anyOf();
3073 +        checkIncomplete(f);
3074 +
3075 +        f.complete(v1);
3076 +        checkCompletedNormally(f, v1);
3077 +    }}
3078 +
3079 +    /**
3080 +     * anyOf returns a future completed normally with a value when
3081 +     * a component future does
3082 +     */
3083 +    public void testAnyOf_normal() throws Exception {
3084 +        for (int k = 0; k < 10; k++) {
3085 +            CompletableFuture[] fs = new CompletableFuture[k];
3086 +            for (int i = 0; i < k; i++)
3087 +                fs[i] = new CompletableFuture<>();
3088 +            CompletableFuture<Object> f = CompletableFuture.anyOf(fs);
3089 +            checkIncomplete(f);
3090 +            for (int i = 0; i < k; i++) {
3091 +                fs[i].complete(i);
3092 +                checkCompletedNormally(f, 0);
3093 +                int x = (int) CompletableFuture.anyOf(fs).join();
3094 +                assertTrue(0 <= x && x <= i);
3095 +            }
3096 +        }
3097 +    }
3098 +    public void testAnyOf_normal_backwards() throws Exception {
3099 +        for (int k = 0; k < 10; k++) {
3100 +            CompletableFuture[] fs = new CompletableFuture[k];
3101 +            for (int i = 0; i < k; i++)
3102 +                fs[i] = new CompletableFuture<>();
3103 +            CompletableFuture<Object> f = CompletableFuture.anyOf(fs);
3104 +            checkIncomplete(f);
3105 +            for (int i = k - 1; i >= 0; i--) {
3106 +                fs[i].complete(i);
3107 +                checkCompletedNormally(f, k - 1);
3108 +                int x = (int) CompletableFuture.anyOf(fs).join();
3109 +                assertTrue(i <= x && x <= k - 1);
3110 +            }
3111 +        }
3112 +    }
3113 +
3114 +    /**
3115 +     * anyOf result completes exceptionally when any component does.
3116 +     */
3117 +    public void testAnyOf_exceptional() throws Exception {
3118 +        for (int k = 0; k < 10; k++) {
3119 +            CompletableFuture[] fs = new CompletableFuture[k];
3120 +            CFException[] exs = new CFException[k];
3121 +            for (int i = 0; i < k; i++) {
3122 +                fs[i] = new CompletableFuture<>();
3123 +                exs[i] = new CFException();
3124 +            }
3125 +            CompletableFuture<Object> f = CompletableFuture.anyOf(fs);
3126 +            checkIncomplete(f);
3127 +            for (int i = 0; i < k; i++) {
3128 +                fs[i].completeExceptionally(exs[i]);
3129 +                checkCompletedWithWrappedException(f, exs[0]);
3130 +                checkCompletedWithWrappedCFException(CompletableFuture.anyOf(fs));
3131 +            }
3132 +        }
3133 +    }
3134 +
3135 +    public void testAnyOf_exceptional_backwards() throws Exception {
3136 +        for (int k = 0; k < 10; k++) {
3137 +            CompletableFuture[] fs = new CompletableFuture[k];
3138 +            CFException[] exs = new CFException[k];
3139 +            for (int i = 0; i < k; i++) {
3140 +                fs[i] = new CompletableFuture<>();
3141 +                exs[i] = new CFException();
3142 +            }
3143 +            CompletableFuture<Object> f = CompletableFuture.anyOf(fs);
3144 +            checkIncomplete(f);
3145 +            for (int i = k - 1; i >= 0; i--) {
3146 +                fs[i].completeExceptionally(exs[i]);
3147 +                checkCompletedWithWrappedException(f, exs[k - 1]);
3148 +                checkCompletedWithWrappedCFException(CompletableFuture.anyOf(fs));
3149 +            }
3150 +        }
3151 +    }
3152 +
3153 +    /**
3154 +     * Completion methods throw NullPointerException with null arguments
3155 +     */
3156 +    public void testNPE() {
3157 +        CompletableFuture<Integer> f = new CompletableFuture<>();
3158 +        CompletableFuture<Integer> g = new CompletableFuture<>();
3159 +        CompletableFuture<Integer> nullFuture = (CompletableFuture<Integer>)null;
3160 +        CompletableFuture<?> h;
3161 +        ThreadExecutor exec = new ThreadExecutor();
3162 +
3163 +        Runnable[] throwingActions = {
3164 +            () -> CompletableFuture.supplyAsync(null),
3165 +            () -> CompletableFuture.supplyAsync(null, exec),
3166 +            () -> CompletableFuture.supplyAsync(new IntegerSupplier(ExecutionMode.SYNC, 42), null),
3167 +
3168 +            () -> CompletableFuture.runAsync(null),
3169 +            () -> CompletableFuture.runAsync(null, exec),
3170 +            () -> CompletableFuture.runAsync(() -> {}, null),
3171 +
3172 +            () -> f.completeExceptionally(null),
3173 +
3174 +            () -> f.thenApply(null),
3175 +            () -> f.thenApplyAsync(null),
3176 +            () -> f.thenApplyAsync((x) -> x, null),
3177 +            () -> f.thenApplyAsync(null, exec),
3178 +
3179 +            () -> f.thenAccept(null),
3180 +            () -> f.thenAcceptAsync(null),
3181 +            () -> f.thenAcceptAsync((x) -> {} , null),
3182 +            () -> f.thenAcceptAsync(null, exec),
3183 +
3184 +            () -> f.thenRun(null),
3185 +            () -> f.thenRunAsync(null),
3186 +            () -> f.thenRunAsync(() -> {} , null),
3187 +            () -> f.thenRunAsync(null, exec),
3188 +
3189 +            () -> f.thenCombine(g, null),
3190 +            () -> f.thenCombineAsync(g, null),
3191 +            () -> f.thenCombineAsync(g, null, exec),
3192 +            () -> f.thenCombine(nullFuture, (x, y) -> x),
3193 +            () -> f.thenCombineAsync(nullFuture, (x, y) -> x),
3194 +            () -> f.thenCombineAsync(nullFuture, (x, y) -> x, exec),
3195 +            () -> f.thenCombineAsync(g, (x, y) -> x, null),
3196 +
3197 +            () -> f.thenAcceptBoth(g, null),
3198 +            () -> f.thenAcceptBothAsync(g, null),
3199 +            () -> f.thenAcceptBothAsync(g, null, exec),
3200 +            () -> f.thenAcceptBoth(nullFuture, (x, y) -> {}),
3201 +            () -> f.thenAcceptBothAsync(nullFuture, (x, y) -> {}),
3202 +            () -> f.thenAcceptBothAsync(nullFuture, (x, y) -> {}, exec),
3203 +            () -> f.thenAcceptBothAsync(g, (x, y) -> {}, null),
3204 +
3205 +            () -> f.runAfterBoth(g, null),
3206 +            () -> f.runAfterBothAsync(g, null),
3207 +            () -> f.runAfterBothAsync(g, null, exec),
3208 +            () -> f.runAfterBoth(nullFuture, () -> {}),
3209 +            () -> f.runAfterBothAsync(nullFuture, () -> {}),
3210 +            () -> f.runAfterBothAsync(nullFuture, () -> {}, exec),
3211 +            () -> f.runAfterBothAsync(g, () -> {}, null),
3212 +
3213 +            () -> f.applyToEither(g, null),
3214 +            () -> f.applyToEitherAsync(g, null),
3215 +            () -> f.applyToEitherAsync(g, null, exec),
3216 +            () -> f.applyToEither(nullFuture, (x) -> x),
3217 +            () -> f.applyToEitherAsync(nullFuture, (x) -> x),
3218 +            () -> f.applyToEitherAsync(nullFuture, (x) -> x, exec),
3219 +            () -> f.applyToEitherAsync(g, (x) -> x, null),
3220 +
3221 +            () -> f.acceptEither(g, null),
3222 +            () -> f.acceptEitherAsync(g, null),
3223 +            () -> f.acceptEitherAsync(g, null, exec),
3224 +            () -> f.acceptEither(nullFuture, (x) -> {}),
3225 +            () -> f.acceptEitherAsync(nullFuture, (x) -> {}),
3226 +            () -> f.acceptEitherAsync(nullFuture, (x) -> {}, exec),
3227 +            () -> f.acceptEitherAsync(g, (x) -> {}, null),
3228 +
3229 +            () -> f.runAfterEither(g, null),
3230 +            () -> f.runAfterEitherAsync(g, null),
3231 +            () -> f.runAfterEitherAsync(g, null, exec),
3232 +            () -> f.runAfterEither(nullFuture, () -> {}),
3233 +            () -> f.runAfterEitherAsync(nullFuture, () -> {}),
3234 +            () -> f.runAfterEitherAsync(nullFuture, () -> {}, exec),
3235 +            () -> f.runAfterEitherAsync(g, () -> {}, null),
3236 +
3237 +            () -> f.thenCompose(null),
3238 +            () -> f.thenComposeAsync(null),
3239 +            () -> f.thenComposeAsync(new CompletableFutureInc(ExecutionMode.EXECUTOR), null),
3240 +            () -> f.thenComposeAsync(null, exec),
3241 +
3242 +            () -> f.exceptionally(null),
3243 +
3244 +            () -> f.handle(null),
3245 +
3246 +            () -> CompletableFuture.allOf((CompletableFuture<?>)null),
3247 +            () -> CompletableFuture.allOf((CompletableFuture<?>[])null),
3248 +            () -> CompletableFuture.allOf(f, null),
3249 +            () -> CompletableFuture.allOf(null, f),
3250 +
3251 +            () -> CompletableFuture.anyOf((CompletableFuture<?>)null),
3252 +            () -> CompletableFuture.anyOf((CompletableFuture<?>[])null),
3253 +            () -> CompletableFuture.anyOf(f, null),
3254 +            () -> CompletableFuture.anyOf(null, f),
3255 +
3256 +            () -> f.obtrudeException(null),
3257 +        };
3258 +
3259 +        assertThrows(NullPointerException.class, throwingActions);
3260 +        assertEquals(0, exec.count.get());
3261 +    }
3262 +
3263 +    /**
3264 +     * toCompletableFuture returns this CompletableFuture.
3265 +     */
3266 +    public void testToCompletableFuture() {
3267 +        CompletableFuture<Integer> f = new CompletableFuture<>();
3268 +        assertSame(f, f.toCompletableFuture());
3269 +    }
3270 +
3271 +    //--- tests of implementation details; not part of official tck ---
3272 +
3273 +    Object resultOf(CompletableFuture<?> f) {
3274 +        try {
3275 +            java.lang.reflect.Field resultField
3276 +                = CompletableFuture.class.getDeclaredField("result");
3277 +            resultField.setAccessible(true);
3278 +            return resultField.get(f);
3279 +        } catch (Throwable t) { throw new AssertionError(t); }
3280 +    }
3281 +
3282 +    public void testExceptionPropagationReusesResultObject() {
3283 +        if (!testImplementationDetails) return;
3284 +        for (ExecutionMode m : ExecutionMode.values())
3285 +    {
3286 +        final CFException ex = new CFException();
3287 +        final CompletableFuture<Integer> v42 = CompletableFuture.completedFuture(42);
3288 +        final CompletableFuture<Integer> incomplete = new CompletableFuture<>();
3289 +
3290 +        List<Function<CompletableFuture<Integer>, CompletableFuture<?>>> funs
3291 +            = new ArrayList<>();
3292 +
3293 +        funs.add((y) -> m.thenRun(y, new Noop(m)));
3294 +        funs.add((y) -> m.thenAccept(y, new NoopConsumer(m)));
3295 +        funs.add((y) -> m.thenApply(y, new IncFunction(m)));
3296 +
3297 +        funs.add((y) -> m.runAfterEither(y, incomplete, new Noop(m)));
3298 +        funs.add((y) -> m.acceptEither(y, incomplete, new NoopConsumer(m)));
3299 +        funs.add((y) -> m.applyToEither(y, incomplete, new IncFunction(m)));
3300 +
3301 +        funs.add((y) -> m.runAfterBoth(y, v42, new Noop(m)));
3302 +        funs.add((y) -> m.thenAcceptBoth(y, v42, new SubtractAction(m)));
3303 +        funs.add((y) -> m.thenCombine(y, v42, new SubtractFunction(m)));
3304 +
3305 +        funs.add((y) -> m.whenComplete(y, (Integer x, Throwable t) -> {}));
3306 +
3307 +        funs.add((y) -> m.thenCompose(y, new CompletableFutureInc(m)));
3308 +
3309 +        funs.add((y) -> CompletableFuture.allOf(new CompletableFuture<?>[] {y, v42}));
3310 +        funs.add((y) -> CompletableFuture.anyOf(new CompletableFuture<?>[] {y, incomplete}));
3311 +
3312 +        for (Function<CompletableFuture<Integer>, CompletableFuture<?>>
3313 +                 fun : funs) {
3314 +            CompletableFuture<Integer> f = new CompletableFuture<>();
3315 +            f.completeExceptionally(ex);
3316 +            CompletableFuture<Integer> src = m.thenApply(f, new IncFunction(m));
3317 +            checkCompletedWithWrappedException(src, ex);
3318 +            CompletableFuture<?> dep = fun.apply(src);
3319 +            checkCompletedWithWrappedException(dep, ex);
3320 +            assertSame(resultOf(src), resultOf(dep));
3321 +        }
3322 +
3323 +        for (Function<CompletableFuture<Integer>, CompletableFuture<?>>
3324 +                 fun : funs) {
3325 +            CompletableFuture<Integer> f = new CompletableFuture<>();
3326 +            CompletableFuture<Integer> src = m.thenApply(f, new IncFunction(m));
3327 +            CompletableFuture<?> dep = fun.apply(src);
3328 +            f.completeExceptionally(ex);
3329 +            checkCompletedWithWrappedException(src, ex);
3330 +            checkCompletedWithWrappedException(dep, ex);
3331 +            assertSame(resultOf(src), resultOf(dep));
3332 +        }
3333 +
3334 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
3335 +        for (Function<CompletableFuture<Integer>, CompletableFuture<?>>
3336 +                 fun : funs) {
3337 +            CompletableFuture<Integer> f = new CompletableFuture<>();
3338 +            f.cancel(mayInterruptIfRunning);
3339 +            checkCancelled(f);
3340 +            CompletableFuture<Integer> src = m.thenApply(f, new IncFunction(m));
3341 +            checkCompletedWithWrappedCancellationException(src);
3342 +            CompletableFuture<?> dep = fun.apply(src);
3343 +            checkCompletedWithWrappedCancellationException(dep);
3344 +            assertSame(resultOf(src), resultOf(dep));
3345 +        }
3346 +
3347 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
3348 +        for (Function<CompletableFuture<Integer>, CompletableFuture<?>>
3349 +                 fun : funs) {
3350 +            CompletableFuture<Integer> f = new CompletableFuture<>();
3351 +            CompletableFuture<Integer> src = m.thenApply(f, new IncFunction(m));
3352 +            CompletableFuture<?> dep = fun.apply(src);
3353 +            f.cancel(mayInterruptIfRunning);
3354 +            checkCancelled(f);
3355 +            checkCompletedWithWrappedCancellationException(src);
3356 +            checkCompletedWithWrappedCancellationException(dep);
3357 +            assertSame(resultOf(src), resultOf(dep));
3358 +        }
3359 +    }}
3360 +
3361   }

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