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Comparing jsr166/src/test/tck/CompletableFutureTest.java (file contents):
Revision 1.1 by jsr166, Wed Feb 6 19:55:06 2013 UTC vs.
Revision 1.109 by jsr166, Fri Sep 4 02:50:00 2015 UTC

# Line 1 | Line 1
1   /*
2 < * Written by Doug Lea with assistance from members of JCP JSR-166
3 < * Expert Group and released to the public domain, as explained at
2 > * Written by Doug Lea and Martin Buchholz with assistance from
3 > * members of JCP JSR-166 Expert Group and released to the public
4 > * domain, as explained at
5   * http://creativecommons.org/publicdomain/zero/1.0/
5 * Other contributors include Andrew Wright, Jeffrey Hayes,
6 * Pat Fisher, Mike Judd.
6   */
7  
8 < import junit.framework.*;
8 > import static java.util.concurrent.TimeUnit.MILLISECONDS;
9 > import static java.util.concurrent.TimeUnit.SECONDS;
10 >
11 > import java.util.ArrayList;
12 > import java.util.List;
13 > import java.util.Objects;
14   import java.util.concurrent.Callable;
15   import java.util.concurrent.CancellationException;
12 import java.util.concurrent.CountDownLatch;
13 import java.util.concurrent.ExecutionException;
14 import java.util.concurrent.Future;
16   import java.util.concurrent.CompletableFuture;
17 + import java.util.concurrent.CompletionException;
18 + import java.util.concurrent.CompletionStage;
19 + import java.util.concurrent.ExecutionException;
20 + import java.util.concurrent.Executor;
21 + import java.util.concurrent.ForkJoinPool;
22 + import java.util.concurrent.ForkJoinTask;
23   import java.util.concurrent.TimeoutException;
24 + import java.util.concurrent.TimeUnit;
25   import java.util.concurrent.atomic.AtomicInteger;
26 < import static java.util.concurrent.TimeUnit.MILLISECONDS;
27 < import static java.util.concurrent.TimeUnit.SECONDS;
28 < import java.util.*;
26 > import java.util.concurrent.atomic.AtomicReference;
27 > import java.util.function.BiConsumer;
28 > import java.util.function.BiFunction;
29 > import java.util.function.Consumer;
30 > import java.util.function.Function;
31 > import java.util.function.Supplier;
32 >
33 > import junit.framework.Test;
34 > import junit.framework.TestSuite;
35  
36   public class CompletableFutureTest extends JSR166TestCase {
37  
38      public static void main(String[] args) {
39 <        junit.textui.TestRunner.run(suite());
39 >        main(suite(), args);
40      }
41      public static Test suite() {
42          return new TestSuite(CompletableFutureTest.class);
43      }
44  
45 +    static class CFException extends RuntimeException {}
46 +
47 +    void checkIncomplete(CompletableFuture<?> f) {
48 +        assertFalse(f.isDone());
49 +        assertFalse(f.isCancelled());
50 +        assertTrue(f.toString().contains("Not completed"));
51 +        try {
52 +            assertNull(f.getNow(null));
53 +        } catch (Throwable fail) { threadUnexpectedException(fail); }
54 +        try {
55 +            f.get(0L, SECONDS);
56 +            shouldThrow();
57 +        }
58 +        catch (TimeoutException success) {}
59 +        catch (Throwable fail) { threadUnexpectedException(fail); }
60 +    }
61 +
62 +    <T> void checkCompletedNormally(CompletableFuture<T> f, T value) {
63 +        checkTimedGet(f, value);
64 +
65 +        try {
66 +            assertEquals(value, f.join());
67 +        } catch (Throwable fail) { threadUnexpectedException(fail); }
68 +        try {
69 +            assertEquals(value, f.getNow(null));
70 +        } catch (Throwable fail) { threadUnexpectedException(fail); }
71 +        try {
72 +            assertEquals(value, f.get());
73 +        } catch (Throwable fail) { threadUnexpectedException(fail); }
74 +        assertTrue(f.isDone());
75 +        assertFalse(f.isCancelled());
76 +        assertFalse(f.isCompletedExceptionally());
77 +        assertTrue(f.toString().contains("[Completed normally]"));
78 +    }
79 +
80 +    void checkCompletedWithWrappedCFException(CompletableFuture<?> f) {
81 +        long startTime = System.nanoTime();
82 +        long timeoutMillis = LONG_DELAY_MS;
83 +        try {
84 +            f.get(timeoutMillis, MILLISECONDS);
85 +            shouldThrow();
86 +        } catch (ExecutionException success) {
87 +            assertTrue(success.getCause() instanceof CFException);
88 +        } catch (Throwable fail) { threadUnexpectedException(fail); }
89 +        assertTrue(millisElapsedSince(startTime) < timeoutMillis/2);
90 +
91 +        try {
92 +            f.join();
93 +            shouldThrow();
94 +        } catch (CompletionException success) {
95 +            assertTrue(success.getCause() instanceof CFException);
96 +        }
97 +        try {
98 +            f.getNow(null);
99 +            shouldThrow();
100 +        } catch (CompletionException success) {
101 +            assertTrue(success.getCause() instanceof CFException);
102 +        }
103 +        try {
104 +            f.get();
105 +            shouldThrow();
106 +        } catch (ExecutionException success) {
107 +            assertTrue(success.getCause() instanceof CFException);
108 +        } catch (Throwable fail) { threadUnexpectedException(fail); }
109 +        assertTrue(f.isDone());
110 +        assertFalse(f.isCancelled());
111 +        assertTrue(f.toString().contains("[Completed exceptionally]"));
112 +    }
113 +
114 +    <U> void checkCompletedExceptionallyWithRootCause(CompletableFuture<U> f,
115 +                                                      Throwable ex) {
116 +        long startTime = System.nanoTime();
117 +        long timeoutMillis = LONG_DELAY_MS;
118 +        try {
119 +            f.get(timeoutMillis, MILLISECONDS);
120 +            shouldThrow();
121 +        } catch (ExecutionException success) {
122 +            assertSame(ex, success.getCause());
123 +        } catch (Throwable fail) { threadUnexpectedException(fail); }
124 +        assertTrue(millisElapsedSince(startTime) < timeoutMillis/2);
125 +
126 +        try {
127 +            f.join();
128 +            shouldThrow();
129 +        } catch (CompletionException success) {
130 +            assertSame(ex, success.getCause());
131 +        }
132 +        try {
133 +            f.getNow(null);
134 +            shouldThrow();
135 +        } catch (CompletionException success) {
136 +            assertSame(ex, success.getCause());
137 +        }
138 +        try {
139 +            f.get();
140 +            shouldThrow();
141 +        } catch (ExecutionException success) {
142 +            assertSame(ex, success.getCause());
143 +        } catch (Throwable fail) { threadUnexpectedException(fail); }
144 +
145 +        assertTrue(f.isDone());
146 +        assertFalse(f.isCancelled());
147 +        assertTrue(f.toString().contains("[Completed exceptionally]"));
148 +    }
149 +
150 +    <U> void checkCompletedExceptionallyWithTimeout(CompletableFuture<U> f) {
151 +        long startTime = System.nanoTime();
152 +        long timeoutMillis = LONG_DELAY_MS;
153 +        try {
154 +            f.get(timeoutMillis, MILLISECONDS);
155 +            shouldThrow();
156 +        } catch (ExecutionException ex) {
157 +            assertTrue(ex.getCause() instanceof TimeoutException);
158 +        } catch (Throwable fail) { threadUnexpectedException(fail); }
159 +        assertTrue(millisElapsedSince(startTime) < timeoutMillis/2);
160 +
161 +        try {
162 +            f.join();
163 +            shouldThrow();
164 +        } catch (Throwable ex) {
165 +            assertTrue(ex.getCause() instanceof TimeoutException);
166 +        }
167 +
168 +        try {
169 +            f.getNow(null);
170 +            shouldThrow();
171 +        } catch (Throwable ex) {
172 +            assertTrue(ex.getCause() instanceof TimeoutException);
173 +        }
174 +
175 +        try {
176 +            f.get();
177 +            shouldThrow();
178 +        } catch (ExecutionException ex) {
179 +            assertTrue(ex.getCause() instanceof TimeoutException);
180 +        } catch (Throwable fail) { threadUnexpectedException(fail); }
181 +
182 +        assertTrue(f.isDone());
183 +        assertFalse(f.isCancelled());
184 +        assertTrue(f.toString().contains("[Completed exceptionally]"));
185 +    }
186 +
187 +    <U> void checkCompletedWithWrappedException(CompletableFuture<U> f,
188 +                                                Throwable ex) {
189 +        checkCompletedExceptionallyWithRootCause(f, ex);
190 +        try {
191 +            CompletableFuture<Throwable> spy = f.handle
192 +                ((U u, Throwable t) -> t);
193 +            assertTrue(spy.join() instanceof CompletionException);
194 +            assertSame(ex, spy.join().getCause());
195 +        } catch (Throwable fail) { threadUnexpectedException(fail); }
196 +    }
197 +
198 +    <U> void checkCompletedExceptionally(CompletableFuture<U> f, Throwable ex) {
199 +        checkCompletedExceptionallyWithRootCause(f, ex);
200 +        try {
201 +            CompletableFuture<Throwable> spy = f.handle
202 +                ((U u, Throwable t) -> t);
203 +            assertSame(ex, spy.join());
204 +        } catch (Throwable fail) { threadUnexpectedException(fail); }
205 +    }
206 +
207 +    void checkCancelled(CompletableFuture<?> f) {
208 +        long startTime = System.nanoTime();
209 +        long timeoutMillis = LONG_DELAY_MS;
210 +        try {
211 +            f.get(timeoutMillis, MILLISECONDS);
212 +            shouldThrow();
213 +        } catch (CancellationException success) {
214 +        } catch (Throwable fail) { threadUnexpectedException(fail); }
215 +        assertTrue(millisElapsedSince(startTime) < timeoutMillis/2);
216 +
217 +        try {
218 +            f.join();
219 +            shouldThrow();
220 +        } catch (CancellationException success) {}
221 +        try {
222 +            f.getNow(null);
223 +            shouldThrow();
224 +        } catch (CancellationException success) {}
225 +        try {
226 +            f.get();
227 +            shouldThrow();
228 +        } catch (CancellationException success) {
229 +        } catch (Throwable fail) { threadUnexpectedException(fail); }
230 +        assertTrue(f.isDone());
231 +        assertTrue(f.isCompletedExceptionally());
232 +        assertTrue(f.isCancelled());
233 +        assertTrue(f.toString().contains("[Completed exceptionally]"));
234 +    }
235 +
236 +    void checkCompletedWithWrappedCancellationException(CompletableFuture<?> f) {
237 +        long startTime = System.nanoTime();
238 +        long timeoutMillis = LONG_DELAY_MS;
239 +        try {
240 +            f.get(timeoutMillis, MILLISECONDS);
241 +            shouldThrow();
242 +        } catch (ExecutionException success) {
243 +            assertTrue(success.getCause() instanceof CancellationException);
244 +        } catch (Throwable fail) { threadUnexpectedException(fail); }
245 +        assertTrue(millisElapsedSince(startTime) < timeoutMillis/2);
246 +
247 +        try {
248 +            f.join();
249 +            shouldThrow();
250 +        } catch (CompletionException success) {
251 +            assertTrue(success.getCause() instanceof CancellationException);
252 +        }
253 +        try {
254 +            f.getNow(null);
255 +            shouldThrow();
256 +        } catch (CompletionException success) {
257 +            assertTrue(success.getCause() instanceof CancellationException);
258 +        }
259 +        try {
260 +            f.get();
261 +            shouldThrow();
262 +        } catch (ExecutionException success) {
263 +            assertTrue(success.getCause() instanceof CancellationException);
264 +        } catch (Throwable fail) { threadUnexpectedException(fail); }
265 +        assertTrue(f.isDone());
266 +        assertFalse(f.isCancelled());
267 +        assertTrue(f.isCompletedExceptionally());
268 +        assertTrue(f.toString().contains("[Completed exceptionally]"));
269 +    }
270 +
271 +    /**
272 +     * A newly constructed CompletableFuture is incomplete, as indicated
273 +     * by methods isDone, isCancelled, and getNow
274 +     */
275 +    public void testConstructor() {
276 +        CompletableFuture<Integer> f = new CompletableFuture<>();
277 +        checkIncomplete(f);
278 +    }
279 +
280 +    /**
281 +     * complete completes normally, as indicated by methods isDone,
282 +     * isCancelled, join, get, and getNow
283 +     */
284 +    public void testComplete() {
285 +        for (Integer v1 : new Integer[] { 1, null })
286 +    {
287 +        CompletableFuture<Integer> f = new CompletableFuture<>();
288 +        checkIncomplete(f);
289 +        assertTrue(f.complete(v1));
290 +        assertFalse(f.complete(v1));
291 +        checkCompletedNormally(f, v1);
292 +    }}
293 +
294 +    /**
295 +     * completeExceptionally completes exceptionally, as indicated by
296 +     * methods isDone, isCancelled, join, get, and getNow
297 +     */
298 +    public void testCompleteExceptionally() {
299 +        CompletableFuture<Integer> f = new CompletableFuture<>();
300 +        CFException ex = new CFException();
301 +        checkIncomplete(f);
302 +        f.completeExceptionally(ex);
303 +        checkCompletedExceptionally(f, ex);
304 +    }
305 +
306 +    /**
307 +     * cancel completes exceptionally and reports cancelled, as indicated by
308 +     * methods isDone, isCancelled, join, get, and getNow
309 +     */
310 +    public void testCancel() {
311 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
312 +    {
313 +        CompletableFuture<Integer> f = new CompletableFuture<>();
314 +        checkIncomplete(f);
315 +        assertTrue(f.cancel(mayInterruptIfRunning));
316 +        assertTrue(f.cancel(mayInterruptIfRunning));
317 +        assertTrue(f.cancel(!mayInterruptIfRunning));
318 +        checkCancelled(f);
319 +    }}
320 +
321 +    /**
322 +     * obtrudeValue forces completion with given value
323 +     */
324 +    public void testObtrudeValue() {
325 +        CompletableFuture<Integer> f = new CompletableFuture<>();
326 +        checkIncomplete(f);
327 +        assertTrue(f.complete(one));
328 +        checkCompletedNormally(f, one);
329 +        f.obtrudeValue(three);
330 +        checkCompletedNormally(f, three);
331 +        f.obtrudeValue(two);
332 +        checkCompletedNormally(f, two);
333 +        f = new CompletableFuture<>();
334 +        f.obtrudeValue(three);
335 +        checkCompletedNormally(f, three);
336 +        f.obtrudeValue(null);
337 +        checkCompletedNormally(f, null);
338 +        f = new CompletableFuture<>();
339 +        f.completeExceptionally(new CFException());
340 +        f.obtrudeValue(four);
341 +        checkCompletedNormally(f, four);
342 +    }
343 +
344 +    /**
345 +     * obtrudeException forces completion with given exception
346 +     */
347 +    public void testObtrudeException() {
348 +        for (Integer v1 : new Integer[] { 1, null })
349 +    {
350 +        CFException ex;
351 +        CompletableFuture<Integer> f;
352 +
353 +        f = new CompletableFuture<>();
354 +        assertTrue(f.complete(v1));
355 +        for (int i = 0; i < 2; i++) {
356 +            f.obtrudeException(ex = new CFException());
357 +            checkCompletedExceptionally(f, ex);
358 +        }
359 +
360 +        f = new CompletableFuture<>();
361 +        for (int i = 0; i < 2; i++) {
362 +            f.obtrudeException(ex = new CFException());
363 +            checkCompletedExceptionally(f, ex);
364 +        }
365 +
366 +        f = new CompletableFuture<>();
367 +        f.completeExceptionally(ex = new CFException());
368 +        f.obtrudeValue(v1);
369 +        checkCompletedNormally(f, v1);
370 +        f.obtrudeException(ex = new CFException());
371 +        checkCompletedExceptionally(f, ex);
372 +        f.completeExceptionally(new CFException());
373 +        checkCompletedExceptionally(f, ex);
374 +        assertFalse(f.complete(v1));
375 +        checkCompletedExceptionally(f, ex);
376 +    }}
377 +
378 +    /**
379 +     * getNumberOfDependents returns number of dependent tasks
380 +     */
381 +    public void testGetNumberOfDependents() {
382 +        for (ExecutionMode m : ExecutionMode.values())
383 +        for (Integer v1 : new Integer[] { 1, null })
384 +    {
385 +        CompletableFuture<Integer> f = new CompletableFuture<>();
386 +        assertEquals(0, f.getNumberOfDependents());
387 +        final CompletableFuture<Void> g = m.thenRun(f, new Noop(m));
388 +        assertEquals(1, f.getNumberOfDependents());
389 +        assertEquals(0, g.getNumberOfDependents());
390 +        final CompletableFuture<Void> h = m.thenRun(f, new Noop(m));
391 +        assertEquals(2, f.getNumberOfDependents());
392 +        assertEquals(0, h.getNumberOfDependents());
393 +        assertTrue(f.complete(v1));
394 +        checkCompletedNormally(g, null);
395 +        checkCompletedNormally(h, null);
396 +        assertEquals(0, f.getNumberOfDependents());
397 +        assertEquals(0, g.getNumberOfDependents());
398 +        assertEquals(0, h.getNumberOfDependents());
399 +    }}
400 +
401 +    /**
402 +     * toString indicates current completion state
403 +     */
404      public void testToString() {
405          CompletableFuture<String> f;
406 <        assertTrue(new CompletableFuture<String>().toString()
34 <                   .contains("[Not completed]"));
406 >
407          f = new CompletableFuture<String>();
408 <        f.complete("foo");
408 >        assertTrue(f.toString().contains("[Not completed]"));
409 >
410 >        assertTrue(f.complete("foo"));
411          assertTrue(f.toString().contains("[Completed normally]"));
412 +
413          f = new CompletableFuture<String>();
414 <        f.completeExceptionally(new IndexOutOfBoundsException());
414 >        assertTrue(f.completeExceptionally(new IndexOutOfBoundsException()));
415          assertTrue(f.toString().contains("[Completed exceptionally]"));
416 +
417 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false }) {
418 +            f = new CompletableFuture<String>();
419 +            assertTrue(f.cancel(mayInterruptIfRunning));
420 +            assertTrue(f.toString().contains("[Completed exceptionally]"));
421 +        }
422 +    }
423 +
424 +    /**
425 +     * completedFuture returns a completed CompletableFuture with given value
426 +     */
427 +    public void testCompletedFuture() {
428 +        CompletableFuture<String> f = CompletableFuture.completedFuture("test");
429 +        checkCompletedNormally(f, "test");
430 +    }
431 +
432 +    abstract class CheckedAction {
433 +        int invocationCount = 0;
434 +        final ExecutionMode m;
435 +        CheckedAction(ExecutionMode m) { this.m = m; }
436 +        void invoked() {
437 +            m.checkExecutionMode();
438 +            assertEquals(0, invocationCount++);
439 +        }
440 +        void assertNotInvoked() { assertEquals(0, invocationCount); }
441 +        void assertInvoked() { assertEquals(1, invocationCount); }
442 +    }
443 +
444 +    abstract class CheckedIntegerAction extends CheckedAction {
445 +        Integer value;
446 +        CheckedIntegerAction(ExecutionMode m) { super(m); }
447 +        void assertValue(Integer expected) {
448 +            assertInvoked();
449 +            assertEquals(expected, value);
450 +        }
451 +    }
452 +
453 +    class IntegerSupplier extends CheckedAction
454 +        implements Supplier<Integer>
455 +    {
456 +        final Integer value;
457 +        IntegerSupplier(ExecutionMode m, Integer value) {
458 +            super(m);
459 +            this.value = value;
460 +        }
461 +        public Integer get() {
462 +            invoked();
463 +            return value;
464 +        }
465 +    }
466 +
467 +    // A function that handles and produces null values as well.
468 +    static Integer inc(Integer x) {
469 +        return (x == null) ? null : x + 1;
470 +    }
471 +
472 +    class NoopConsumer extends CheckedIntegerAction
473 +        implements Consumer<Integer>
474 +    {
475 +        NoopConsumer(ExecutionMode m) { super(m); }
476 +        public void accept(Integer x) {
477 +            invoked();
478 +            value = x;
479 +        }
480 +    }
481 +
482 +    class IncFunction extends CheckedIntegerAction
483 +        implements Function<Integer,Integer>
484 +    {
485 +        IncFunction(ExecutionMode m) { super(m); }
486 +        public Integer apply(Integer x) {
487 +            invoked();
488 +            return value = inc(x);
489 +        }
490 +    }
491 +
492 +    // Choose non-commutative actions for better coverage
493 +    // A non-commutative function that handles and produces null values as well.
494 +    static Integer subtract(Integer x, Integer y) {
495 +        return (x == null && y == null) ? null :
496 +            ((x == null) ? 42 : x.intValue())
497 +            - ((y == null) ? 99 : y.intValue());
498 +    }
499 +
500 +    class SubtractAction extends CheckedIntegerAction
501 +        implements BiConsumer<Integer, Integer>
502 +    {
503 +        SubtractAction(ExecutionMode m) { super(m); }
504 +        public void accept(Integer x, Integer y) {
505 +            invoked();
506 +            value = subtract(x, y);
507 +        }
508 +    }
509 +
510 +    class SubtractFunction extends CheckedIntegerAction
511 +        implements BiFunction<Integer, Integer, Integer>
512 +    {
513 +        SubtractFunction(ExecutionMode m) { super(m); }
514 +        public Integer apply(Integer x, Integer y) {
515 +            invoked();
516 +            return value = subtract(x, y);
517 +        }
518 +    }
519 +
520 +    class Noop extends CheckedAction implements Runnable {
521 +        Noop(ExecutionMode m) { super(m); }
522 +        public void run() {
523 +            invoked();
524 +        }
525 +    }
526 +
527 +    class FailingSupplier extends CheckedAction
528 +        implements Supplier<Integer>
529 +    {
530 +        FailingSupplier(ExecutionMode m) { super(m); }
531 +        public Integer get() {
532 +            invoked();
533 +            throw new CFException();
534 +        }
535 +    }
536 +
537 +    class FailingConsumer extends CheckedIntegerAction
538 +        implements Consumer<Integer>
539 +    {
540 +        FailingConsumer(ExecutionMode m) { super(m); }
541 +        public void accept(Integer x) {
542 +            invoked();
543 +            value = x;
544 +            throw new CFException();
545 +        }
546 +    }
547 +
548 +    class FailingBiConsumer extends CheckedIntegerAction
549 +        implements BiConsumer<Integer, Integer>
550 +    {
551 +        FailingBiConsumer(ExecutionMode m) { super(m); }
552 +        public void accept(Integer x, Integer y) {
553 +            invoked();
554 +            value = subtract(x, y);
555 +            throw new CFException();
556 +        }
557 +    }
558 +
559 +    class FailingFunction extends CheckedIntegerAction
560 +        implements Function<Integer, Integer>
561 +    {
562 +        FailingFunction(ExecutionMode m) { super(m); }
563 +        public Integer apply(Integer x) {
564 +            invoked();
565 +            value = x;
566 +            throw new CFException();
567 +        }
568 +    }
569 +
570 +    class FailingBiFunction extends CheckedIntegerAction
571 +        implements BiFunction<Integer, Integer, Integer>
572 +    {
573 +        FailingBiFunction(ExecutionMode m) { super(m); }
574 +        public Integer apply(Integer x, Integer y) {
575 +            invoked();
576 +            value = subtract(x, y);
577 +            throw new CFException();
578 +        }
579 +    }
580 +
581 +    class FailingRunnable extends CheckedAction implements Runnable {
582 +        FailingRunnable(ExecutionMode m) { super(m); }
583 +        public void run() {
584 +            invoked();
585 +            throw new CFException();
586 +        }
587 +    }
588 +
589 +    class CompletableFutureInc extends CheckedIntegerAction
590 +        implements Function<Integer, CompletableFuture<Integer>>
591 +    {
592 +        CompletableFutureInc(ExecutionMode m) { super(m); }
593 +        public CompletableFuture<Integer> apply(Integer x) {
594 +            invoked();
595 +            value = x;
596 +            CompletableFuture<Integer> f = new CompletableFuture<>();
597 +            assertTrue(f.complete(inc(x)));
598 +            return f;
599 +        }
600 +    }
601 +
602 +    class FailingCompletableFutureFunction extends CheckedIntegerAction
603 +        implements Function<Integer, CompletableFuture<Integer>>
604 +    {
605 +        FailingCompletableFutureFunction(ExecutionMode m) { super(m); }
606 +        public CompletableFuture<Integer> apply(Integer x) {
607 +            invoked();
608 +            value = x;
609 +            throw new CFException();
610 +        }
611 +    }
612 +
613 +    // Used for explicit executor tests
614 +    static final class ThreadExecutor implements Executor {
615 +        final AtomicInteger count = new AtomicInteger(0);
616 +        static final ThreadGroup tg = new ThreadGroup("ThreadExecutor");
617 +        static boolean startedCurrentThread() {
618 +            return Thread.currentThread().getThreadGroup() == tg;
619 +        }
620 +
621 +        public void execute(Runnable r) {
622 +            count.getAndIncrement();
623 +            new Thread(tg, r).start();
624 +        }
625 +    }
626 +
627 +    static final boolean defaultExecutorIsCommonPool
628 +        = ForkJoinPool.getCommonPoolParallelism() > 1;
629 +
630 +    /**
631 +     * Permits the testing of parallel code for the 3 different
632 +     * execution modes without copy/pasting all the test methods.
633 +     */
634 +    enum ExecutionMode {
635 +        SYNC {
636 +            public void checkExecutionMode() {
637 +                assertFalse(ThreadExecutor.startedCurrentThread());
638 +                assertNull(ForkJoinTask.getPool());
639 +            }
640 +            public CompletableFuture<Void> runAsync(Runnable a) {
641 +                throw new UnsupportedOperationException();
642 +            }
643 +            public <U> CompletableFuture<U> supplyAsync(Supplier<U> a) {
644 +                throw new UnsupportedOperationException();
645 +            }
646 +            public <T> CompletableFuture<Void> thenRun
647 +                (CompletableFuture<T> f, Runnable a) {
648 +                return f.thenRun(a);
649 +            }
650 +            public <T> CompletableFuture<Void> thenAccept
651 +                (CompletableFuture<T> f, Consumer<? super T> a) {
652 +                return f.thenAccept(a);
653 +            }
654 +            public <T,U> CompletableFuture<U> thenApply
655 +                (CompletableFuture<T> f, Function<? super T,U> a) {
656 +                return f.thenApply(a);
657 +            }
658 +            public <T,U> CompletableFuture<U> thenCompose
659 +                (CompletableFuture<T> f,
660 +                 Function<? super T,? extends CompletionStage<U>> a) {
661 +                return f.thenCompose(a);
662 +            }
663 +            public <T,U> CompletableFuture<U> handle
664 +                (CompletableFuture<T> f,
665 +                 BiFunction<? super T,Throwable,? extends U> a) {
666 +                return f.handle(a);
667 +            }
668 +            public <T> CompletableFuture<T> whenComplete
669 +                (CompletableFuture<T> f,
670 +                 BiConsumer<? super T,? super Throwable> a) {
671 +                return f.whenComplete(a);
672 +            }
673 +            public <T,U> CompletableFuture<Void> runAfterBoth
674 +                (CompletableFuture<T> f, CompletableFuture<U> g, Runnable a) {
675 +                return f.runAfterBoth(g, a);
676 +            }
677 +            public <T,U> CompletableFuture<Void> thenAcceptBoth
678 +                (CompletableFuture<T> f,
679 +                 CompletionStage<? extends U> g,
680 +                 BiConsumer<? super T,? super U> a) {
681 +                return f.thenAcceptBoth(g, a);
682 +            }
683 +            public <T,U,V> CompletableFuture<V> thenCombine
684 +                (CompletableFuture<T> f,
685 +                 CompletionStage<? extends U> g,
686 +                 BiFunction<? super T,? super U,? extends V> a) {
687 +                return f.thenCombine(g, a);
688 +            }
689 +            public <T> CompletableFuture<Void> runAfterEither
690 +                (CompletableFuture<T> f,
691 +                 CompletionStage<?> g,
692 +                 java.lang.Runnable a) {
693 +                return f.runAfterEither(g, a);
694 +            }
695 +            public <T> CompletableFuture<Void> acceptEither
696 +                (CompletableFuture<T> f,
697 +                 CompletionStage<? extends T> g,
698 +                 Consumer<? super T> a) {
699 +                return f.acceptEither(g, a);
700 +            }
701 +            public <T,U> CompletableFuture<U> applyToEither
702 +                (CompletableFuture<T> f,
703 +                 CompletionStage<? extends T> g,
704 +                 Function<? super T,U> a) {
705 +                return f.applyToEither(g, a);
706 +            }
707 +        },
708 +
709 +        ASYNC {
710 +            public void checkExecutionMode() {
711 +                assertEquals(defaultExecutorIsCommonPool,
712 +                             (ForkJoinPool.commonPool() == ForkJoinTask.getPool()));
713 +            }
714 +            public CompletableFuture<Void> runAsync(Runnable a) {
715 +                return CompletableFuture.runAsync(a);
716 +            }
717 +            public <U> CompletableFuture<U> supplyAsync(Supplier<U> a) {
718 +                return CompletableFuture.supplyAsync(a);
719 +            }
720 +            public <T> CompletableFuture<Void> thenRun
721 +                (CompletableFuture<T> f, Runnable a) {
722 +                return f.thenRunAsync(a);
723 +            }
724 +            public <T> CompletableFuture<Void> thenAccept
725 +                (CompletableFuture<T> f, Consumer<? super T> a) {
726 +                return f.thenAcceptAsync(a);
727 +            }
728 +            public <T,U> CompletableFuture<U> thenApply
729 +                (CompletableFuture<T> f, Function<? super T,U> a) {
730 +                return f.thenApplyAsync(a);
731 +            }
732 +            public <T,U> CompletableFuture<U> thenCompose
733 +                (CompletableFuture<T> f,
734 +                 Function<? super T,? extends CompletionStage<U>> a) {
735 +                return f.thenComposeAsync(a);
736 +            }
737 +            public <T,U> CompletableFuture<U> handle
738 +                (CompletableFuture<T> f,
739 +                 BiFunction<? super T,Throwable,? extends U> a) {
740 +                return f.handleAsync(a);
741 +            }
742 +            public <T> CompletableFuture<T> whenComplete
743 +                (CompletableFuture<T> f,
744 +                 BiConsumer<? super T,? super Throwable> a) {
745 +                return f.whenCompleteAsync(a);
746 +            }
747 +            public <T,U> CompletableFuture<Void> runAfterBoth
748 +                (CompletableFuture<T> f, CompletableFuture<U> g, Runnable a) {
749 +                return f.runAfterBothAsync(g, a);
750 +            }
751 +            public <T,U> CompletableFuture<Void> thenAcceptBoth
752 +                (CompletableFuture<T> f,
753 +                 CompletionStage<? extends U> g,
754 +                 BiConsumer<? super T,? super U> a) {
755 +                return f.thenAcceptBothAsync(g, a);
756 +            }
757 +            public <T,U,V> CompletableFuture<V> thenCombine
758 +                (CompletableFuture<T> f,
759 +                 CompletionStage<? extends U> g,
760 +                 BiFunction<? super T,? super U,? extends V> a) {
761 +                return f.thenCombineAsync(g, a);
762 +            }
763 +            public <T> CompletableFuture<Void> runAfterEither
764 +                (CompletableFuture<T> f,
765 +                 CompletionStage<?> g,
766 +                 java.lang.Runnable a) {
767 +                return f.runAfterEitherAsync(g, a);
768 +            }
769 +            public <T> CompletableFuture<Void> acceptEither
770 +                (CompletableFuture<T> f,
771 +                 CompletionStage<? extends T> g,
772 +                 Consumer<? super T> a) {
773 +                return f.acceptEitherAsync(g, a);
774 +            }
775 +            public <T,U> CompletableFuture<U> applyToEither
776 +                (CompletableFuture<T> f,
777 +                 CompletionStage<? extends T> g,
778 +                 Function<? super T,U> a) {
779 +                return f.applyToEitherAsync(g, a);
780 +            }
781 +        },
782 +
783 +        EXECUTOR {
784 +            public void checkExecutionMode() {
785 +                assertTrue(ThreadExecutor.startedCurrentThread());
786 +            }
787 +            public CompletableFuture<Void> runAsync(Runnable a) {
788 +                return CompletableFuture.runAsync(a, new ThreadExecutor());
789 +            }
790 +            public <U> CompletableFuture<U> supplyAsync(Supplier<U> a) {
791 +                return CompletableFuture.supplyAsync(a, new ThreadExecutor());
792 +            }
793 +            public <T> CompletableFuture<Void> thenRun
794 +                (CompletableFuture<T> f, Runnable a) {
795 +                return f.thenRunAsync(a, new ThreadExecutor());
796 +            }
797 +            public <T> CompletableFuture<Void> thenAccept
798 +                (CompletableFuture<T> f, Consumer<? super T> a) {
799 +                return f.thenAcceptAsync(a, new ThreadExecutor());
800 +            }
801 +            public <T,U> CompletableFuture<U> thenApply
802 +                (CompletableFuture<T> f, Function<? super T,U> a) {
803 +                return f.thenApplyAsync(a, new ThreadExecutor());
804 +            }
805 +            public <T,U> CompletableFuture<U> thenCompose
806 +                (CompletableFuture<T> f,
807 +                 Function<? super T,? extends CompletionStage<U>> a) {
808 +                return f.thenComposeAsync(a, new ThreadExecutor());
809 +            }
810 +            public <T,U> CompletableFuture<U> handle
811 +                (CompletableFuture<T> f,
812 +                 BiFunction<? super T,Throwable,? extends U> a) {
813 +                return f.handleAsync(a, new ThreadExecutor());
814 +            }
815 +            public <T> CompletableFuture<T> whenComplete
816 +                (CompletableFuture<T> f,
817 +                 BiConsumer<? super T,? super Throwable> a) {
818 +                return f.whenCompleteAsync(a, new ThreadExecutor());
819 +            }
820 +            public <T,U> CompletableFuture<Void> runAfterBoth
821 +                (CompletableFuture<T> f, CompletableFuture<U> g, Runnable a) {
822 +                return f.runAfterBothAsync(g, a, new ThreadExecutor());
823 +            }
824 +            public <T,U> CompletableFuture<Void> thenAcceptBoth
825 +                (CompletableFuture<T> f,
826 +                 CompletionStage<? extends U> g,
827 +                 BiConsumer<? super T,? super U> a) {
828 +                return f.thenAcceptBothAsync(g, a, new ThreadExecutor());
829 +            }
830 +            public <T,U,V> CompletableFuture<V> thenCombine
831 +                (CompletableFuture<T> f,
832 +                 CompletionStage<? extends U> g,
833 +                 BiFunction<? super T,? super U,? extends V> a) {
834 +                return f.thenCombineAsync(g, a, new ThreadExecutor());
835 +            }
836 +            public <T> CompletableFuture<Void> runAfterEither
837 +                (CompletableFuture<T> f,
838 +                 CompletionStage<?> g,
839 +                 java.lang.Runnable a) {
840 +                return f.runAfterEitherAsync(g, a, new ThreadExecutor());
841 +            }
842 +            public <T> CompletableFuture<Void> acceptEither
843 +                (CompletableFuture<T> f,
844 +                 CompletionStage<? extends T> g,
845 +                 Consumer<? super T> a) {
846 +                return f.acceptEitherAsync(g, a, new ThreadExecutor());
847 +            }
848 +            public <T,U> CompletableFuture<U> applyToEither
849 +                (CompletableFuture<T> f,
850 +                 CompletionStage<? extends T> g,
851 +                 Function<? super T,U> a) {
852 +                return f.applyToEitherAsync(g, a, new ThreadExecutor());
853 +            }
854 +        };
855 +
856 +        public abstract void checkExecutionMode();
857 +        public abstract CompletableFuture<Void> runAsync(Runnable a);
858 +        public abstract <U> CompletableFuture<U> supplyAsync(Supplier<U> a);
859 +        public abstract <T> CompletableFuture<Void> thenRun
860 +            (CompletableFuture<T> f, Runnable a);
861 +        public abstract <T> CompletableFuture<Void> thenAccept
862 +            (CompletableFuture<T> f, Consumer<? super T> a);
863 +        public abstract <T,U> CompletableFuture<U> thenApply
864 +            (CompletableFuture<T> f, Function<? super T,U> a);
865 +        public abstract <T,U> CompletableFuture<U> thenCompose
866 +            (CompletableFuture<T> f,
867 +             Function<? super T,? extends CompletionStage<U>> a);
868 +        public abstract <T,U> CompletableFuture<U> handle
869 +            (CompletableFuture<T> f,
870 +             BiFunction<? super T,Throwable,? extends U> a);
871 +        public abstract <T> CompletableFuture<T> whenComplete
872 +            (CompletableFuture<T> f,
873 +             BiConsumer<? super T,? super Throwable> a);
874 +        public abstract <T,U> CompletableFuture<Void> runAfterBoth
875 +            (CompletableFuture<T> f, CompletableFuture<U> g, Runnable a);
876 +        public abstract <T,U> CompletableFuture<Void> thenAcceptBoth
877 +            (CompletableFuture<T> f,
878 +             CompletionStage<? extends U> g,
879 +             BiConsumer<? super T,? super U> a);
880 +        public abstract <T,U,V> CompletableFuture<V> thenCombine
881 +            (CompletableFuture<T> f,
882 +             CompletionStage<? extends U> g,
883 +             BiFunction<? super T,? super U,? extends V> a);
884 +        public abstract <T> CompletableFuture<Void> runAfterEither
885 +            (CompletableFuture<T> f,
886 +             CompletionStage<?> g,
887 +             java.lang.Runnable a);
888 +        public abstract <T> CompletableFuture<Void> acceptEither
889 +            (CompletableFuture<T> f,
890 +             CompletionStage<? extends T> g,
891 +             Consumer<? super T> a);
892 +        public abstract <T,U> CompletableFuture<U> applyToEither
893 +            (CompletableFuture<T> f,
894 +             CompletionStage<? extends T> g,
895 +             Function<? super T,U> a);
896 +    }
897 +
898 +    /**
899 +     * exceptionally action is not invoked when source completes
900 +     * normally, and source result is propagated
901 +     */
902 +    public void testExceptionally_normalCompletion() {
903 +        for (boolean createIncomplete : new boolean[] { true, false })
904 +        for (Integer v1 : new Integer[] { 1, null })
905 +    {
906 +        final AtomicInteger a = new AtomicInteger(0);
907 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
908 +        if (!createIncomplete) assertTrue(f.complete(v1));
909 +        final CompletableFuture<Integer> g = f.exceptionally
910 +            ((Throwable t) -> {
911 +                // Should not be called
912 +                a.getAndIncrement();
913 +                throw new AssertionError();
914 +            });
915 +        if (createIncomplete) assertTrue(f.complete(v1));
916 +
917 +        checkCompletedNormally(g, v1);
918 +        checkCompletedNormally(f, v1);
919 +        assertEquals(0, a.get());
920 +    }}
921 +
922 +    /**
923 +     * exceptionally action completes with function value on source
924 +     * exception
925 +     */
926 +    public void testExceptionally_exceptionalCompletion() {
927 +        for (boolean createIncomplete : new boolean[] { true, false })
928 +        for (Integer v1 : new Integer[] { 1, null })
929 +    {
930 +        final AtomicInteger a = new AtomicInteger(0);
931 +        final CFException ex = new CFException();
932 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
933 +        if (!createIncomplete) f.completeExceptionally(ex);
934 +        final CompletableFuture<Integer> g = f.exceptionally
935 +            ((Throwable t) -> {
936 +                ExecutionMode.SYNC.checkExecutionMode();
937 +                threadAssertSame(t, ex);
938 +                a.getAndIncrement();
939 +                return v1;
940 +            });
941 +        if (createIncomplete) f.completeExceptionally(ex);
942 +
943 +        checkCompletedNormally(g, v1);
944 +        assertEquals(1, a.get());
945 +    }}
946 +
947 +    public void testExceptionally_exceptionalCompletionActionFailed() {
948 +        for (boolean createIncomplete : new boolean[] { true, false })
949 +    {
950 +        final AtomicInteger a = new AtomicInteger(0);
951 +        final CFException ex1 = new CFException();
952 +        final CFException ex2 = new CFException();
953 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
954 +        if (!createIncomplete) f.completeExceptionally(ex1);
955 +        final CompletableFuture<Integer> g = f.exceptionally
956 +            ((Throwable t) -> {
957 +                ExecutionMode.SYNC.checkExecutionMode();
958 +                threadAssertSame(t, ex1);
959 +                a.getAndIncrement();
960 +                throw ex2;
961 +            });
962 +        if (createIncomplete) f.completeExceptionally(ex1);
963 +
964 +        checkCompletedWithWrappedException(g, ex2);
965 +        assertEquals(1, a.get());
966 +    }}
967 +
968 +    /**
969 +     * whenComplete action executes on normal completion, propagating
970 +     * source result.
971 +     */
972 +    public void testWhenComplete_normalCompletion1() {
973 +        for (ExecutionMode m : ExecutionMode.values())
974 +        for (boolean createIncomplete : new boolean[] { true, false })
975 +        for (Integer v1 : new Integer[] { 1, null })
976 +    {
977 +        final AtomicInteger a = new AtomicInteger(0);
978 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
979 +        if (!createIncomplete) assertTrue(f.complete(v1));
980 +        final CompletableFuture<Integer> g = m.whenComplete
981 +            (f,
982 +             (Integer x, Throwable t) -> {
983 +                m.checkExecutionMode();
984 +                threadAssertSame(x, v1);
985 +                threadAssertNull(t);
986 +                a.getAndIncrement();
987 +            });
988 +        if (createIncomplete) assertTrue(f.complete(v1));
989 +
990 +        checkCompletedNormally(g, v1);
991 +        checkCompletedNormally(f, v1);
992 +        assertEquals(1, a.get());
993 +    }}
994 +
995 +    /**
996 +     * whenComplete action executes on exceptional completion, propagating
997 +     * source result.
998 +     */
999 +    public void testWhenComplete_exceptionalCompletion() {
1000 +        for (ExecutionMode m : ExecutionMode.values())
1001 +        for (boolean createIncomplete : new boolean[] { true, false })
1002 +    {
1003 +        final AtomicInteger a = new AtomicInteger(0);
1004 +        final CFException ex = new CFException();
1005 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1006 +        if (!createIncomplete) f.completeExceptionally(ex);
1007 +        final CompletableFuture<Integer> g = m.whenComplete
1008 +            (f,
1009 +             (Integer x, Throwable t) -> {
1010 +                m.checkExecutionMode();
1011 +                threadAssertNull(x);
1012 +                threadAssertSame(t, ex);
1013 +                a.getAndIncrement();
1014 +            });
1015 +        if (createIncomplete) f.completeExceptionally(ex);
1016 +
1017 +        checkCompletedWithWrappedException(g, ex);
1018 +        checkCompletedExceptionally(f, ex);
1019 +        assertEquals(1, a.get());
1020 +    }}
1021 +
1022 +    /**
1023 +     * whenComplete action executes on cancelled source, propagating
1024 +     * CancellationException.
1025 +     */
1026 +    public void testWhenComplete_sourceCancelled() {
1027 +        for (ExecutionMode m : ExecutionMode.values())
1028 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1029 +        for (boolean createIncomplete : new boolean[] { true, false })
1030 +    {
1031 +        final AtomicInteger a = new AtomicInteger(0);
1032 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1033 +        if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
1034 +        final CompletableFuture<Integer> g = m.whenComplete
1035 +            (f,
1036 +             (Integer x, Throwable t) -> {
1037 +                m.checkExecutionMode();
1038 +                threadAssertNull(x);
1039 +                threadAssertTrue(t instanceof CancellationException);
1040 +                a.getAndIncrement();
1041 +            });
1042 +        if (createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
1043 +
1044 +        checkCompletedWithWrappedCancellationException(g);
1045 +        checkCancelled(f);
1046 +        assertEquals(1, a.get());
1047 +    }}
1048 +
1049 +    /**
1050 +     * If a whenComplete action throws an exception when triggered by
1051 +     * a normal completion, it completes exceptionally
1052 +     */
1053 +    public void testWhenComplete_actionFailed() {
1054 +        for (boolean createIncomplete : new boolean[] { true, false })
1055 +        for (ExecutionMode m : ExecutionMode.values())
1056 +        for (Integer v1 : new Integer[] { 1, null })
1057 +    {
1058 +        final AtomicInteger a = new AtomicInteger(0);
1059 +        final CFException ex = new CFException();
1060 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1061 +        if (!createIncomplete) assertTrue(f.complete(v1));
1062 +        final CompletableFuture<Integer> g = m.whenComplete
1063 +            (f,
1064 +             (Integer x, Throwable t) -> {
1065 +                m.checkExecutionMode();
1066 +                threadAssertSame(x, v1);
1067 +                threadAssertNull(t);
1068 +                a.getAndIncrement();
1069 +                throw ex;
1070 +            });
1071 +        if (createIncomplete) assertTrue(f.complete(v1));
1072 +
1073 +        checkCompletedWithWrappedException(g, ex);
1074 +        checkCompletedNormally(f, v1);
1075 +        assertEquals(1, a.get());
1076 +    }}
1077 +
1078 +    /**
1079 +     * If a whenComplete action throws an exception when triggered by
1080 +     * a source completion that also throws an exception, the source
1081 +     * exception takes precedence.
1082 +     */
1083 +    public void testWhenComplete_actionFailedSourceFailed() {
1084 +        for (boolean createIncomplete : new boolean[] { true, false })
1085 +        for (ExecutionMode m : ExecutionMode.values())
1086 +    {
1087 +        final AtomicInteger a = new AtomicInteger(0);
1088 +        final CFException ex1 = new CFException();
1089 +        final CFException ex2 = new CFException();
1090 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1091 +
1092 +        if (!createIncomplete) f.completeExceptionally(ex1);
1093 +        final CompletableFuture<Integer> g = m.whenComplete
1094 +            (f,
1095 +             (Integer x, Throwable t) -> {
1096 +                m.checkExecutionMode();
1097 +                threadAssertSame(t, ex1);
1098 +                threadAssertNull(x);
1099 +                a.getAndIncrement();
1100 +                throw ex2;
1101 +            });
1102 +        if (createIncomplete) f.completeExceptionally(ex1);
1103 +
1104 +        checkCompletedWithWrappedException(g, ex1);
1105 +        checkCompletedExceptionally(f, ex1);
1106 +        assertEquals(1, a.get());
1107 +    }}
1108 +
1109 +    /**
1110 +     * handle action completes normally with function value on normal
1111 +     * completion of source
1112 +     */
1113 +    public void testHandle_normalCompletion() {
1114 +        for (ExecutionMode m : ExecutionMode.values())
1115 +        for (boolean createIncomplete : new boolean[] { true, false })
1116 +        for (Integer v1 : new Integer[] { 1, null })
1117 +    {
1118 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1119 +        final AtomicInteger a = new AtomicInteger(0);
1120 +        if (!createIncomplete) assertTrue(f.complete(v1));
1121 +        final CompletableFuture<Integer> g = m.handle
1122 +            (f,
1123 +             (Integer x, Throwable t) -> {
1124 +                m.checkExecutionMode();
1125 +                threadAssertSame(x, v1);
1126 +                threadAssertNull(t);
1127 +                a.getAndIncrement();
1128 +                return inc(v1);
1129 +            });
1130 +        if (createIncomplete) assertTrue(f.complete(v1));
1131 +
1132 +        checkCompletedNormally(g, inc(v1));
1133 +        checkCompletedNormally(f, v1);
1134 +        assertEquals(1, a.get());
1135 +    }}
1136 +
1137 +    /**
1138 +     * handle action completes normally with function value on
1139 +     * exceptional completion of source
1140 +     */
1141 +    public void testHandle_exceptionalCompletion() {
1142 +        for (ExecutionMode m : ExecutionMode.values())
1143 +        for (boolean createIncomplete : new boolean[] { true, false })
1144 +        for (Integer v1 : new Integer[] { 1, null })
1145 +    {
1146 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1147 +        final AtomicInteger a = new AtomicInteger(0);
1148 +        final CFException ex = new CFException();
1149 +        if (!createIncomplete) f.completeExceptionally(ex);
1150 +        final CompletableFuture<Integer> g = m.handle
1151 +            (f,
1152 +             (Integer x, Throwable t) -> {
1153 +                m.checkExecutionMode();
1154 +                threadAssertNull(x);
1155 +                threadAssertSame(t, ex);
1156 +                a.getAndIncrement();
1157 +                return v1;
1158 +            });
1159 +        if (createIncomplete) f.completeExceptionally(ex);
1160 +
1161 +        checkCompletedNormally(g, v1);
1162 +        checkCompletedExceptionally(f, ex);
1163 +        assertEquals(1, a.get());
1164 +    }}
1165 +
1166 +    /**
1167 +     * handle action completes normally with function value on
1168 +     * cancelled source
1169 +     */
1170 +    public void testHandle_sourceCancelled() {
1171 +        for (ExecutionMode m : ExecutionMode.values())
1172 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1173 +        for (boolean createIncomplete : new boolean[] { true, false })
1174 +        for (Integer v1 : new Integer[] { 1, null })
1175 +    {
1176 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1177 +        final AtomicInteger a = new AtomicInteger(0);
1178 +        if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
1179 +        final CompletableFuture<Integer> g = m.handle
1180 +            (f,
1181 +             (Integer x, Throwable t) -> {
1182 +                m.checkExecutionMode();
1183 +                threadAssertNull(x);
1184 +                threadAssertTrue(t instanceof CancellationException);
1185 +                a.getAndIncrement();
1186 +                return v1;
1187 +            });
1188 +        if (createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
1189 +
1190 +        checkCompletedNormally(g, v1);
1191 +        checkCancelled(f);
1192 +        assertEquals(1, a.get());
1193 +    }}
1194 +
1195 +    /**
1196 +     * handle result completes exceptionally if action does
1197 +     */
1198 +    public void testHandle_sourceFailedActionFailed() {
1199 +        for (ExecutionMode m : ExecutionMode.values())
1200 +        for (boolean createIncomplete : new boolean[] { true, false })
1201 +    {
1202 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1203 +        final AtomicInteger a = new AtomicInteger(0);
1204 +        final CFException ex1 = new CFException();
1205 +        final CFException ex2 = new CFException();
1206 +        if (!createIncomplete) f.completeExceptionally(ex1);
1207 +        final CompletableFuture<Integer> g = m.handle
1208 +            (f,
1209 +             (Integer x, Throwable t) -> {
1210 +                m.checkExecutionMode();
1211 +                threadAssertNull(x);
1212 +                threadAssertSame(ex1, t);
1213 +                a.getAndIncrement();
1214 +                throw ex2;
1215 +            });
1216 +        if (createIncomplete) f.completeExceptionally(ex1);
1217 +
1218 +        checkCompletedWithWrappedException(g, ex2);
1219 +        checkCompletedExceptionally(f, ex1);
1220 +        assertEquals(1, a.get());
1221 +    }}
1222 +
1223 +    public void testHandle_sourceCompletedNormallyActionFailed() {
1224 +        for (ExecutionMode m : ExecutionMode.values())
1225 +        for (boolean createIncomplete : new boolean[] { true, false })
1226 +        for (Integer v1 : new Integer[] { 1, null })
1227 +    {
1228 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1229 +        final AtomicInteger a = new AtomicInteger(0);
1230 +        final CFException ex = new CFException();
1231 +        if (!createIncomplete) assertTrue(f.complete(v1));
1232 +        final CompletableFuture<Integer> g = m.handle
1233 +            (f,
1234 +             (Integer x, Throwable t) -> {
1235 +                m.checkExecutionMode();
1236 +                threadAssertSame(x, v1);
1237 +                threadAssertNull(t);
1238 +                a.getAndIncrement();
1239 +                throw ex;
1240 +            });
1241 +        if (createIncomplete) assertTrue(f.complete(v1));
1242 +
1243 +        checkCompletedWithWrappedException(g, ex);
1244 +        checkCompletedNormally(f, v1);
1245 +        assertEquals(1, a.get());
1246 +    }}
1247 +
1248 +    /**
1249 +     * runAsync completes after running Runnable
1250 +     */
1251 +    public void testRunAsync_normalCompletion() {
1252 +        ExecutionMode[] executionModes = {
1253 +            ExecutionMode.ASYNC,
1254 +            ExecutionMode.EXECUTOR,
1255 +        };
1256 +        for (ExecutionMode m : executionModes)
1257 +    {
1258 +        final Noop r = new Noop(m);
1259 +        final CompletableFuture<Void> f = m.runAsync(r);
1260 +        assertNull(f.join());
1261 +        checkCompletedNormally(f, null);
1262 +        r.assertInvoked();
1263 +    }}
1264 +
1265 +    /**
1266 +     * failing runAsync completes exceptionally after running Runnable
1267 +     */
1268 +    public void testRunAsync_exceptionalCompletion() {
1269 +        ExecutionMode[] executionModes = {
1270 +            ExecutionMode.ASYNC,
1271 +            ExecutionMode.EXECUTOR,
1272 +        };
1273 +        for (ExecutionMode m : executionModes)
1274 +    {
1275 +        final FailingRunnable r = new FailingRunnable(m);
1276 +        final CompletableFuture<Void> f = m.runAsync(r);
1277 +        checkCompletedWithWrappedCFException(f);
1278 +        r.assertInvoked();
1279 +    }}
1280 +
1281 +    /**
1282 +     * supplyAsync completes with result of supplier
1283 +     */
1284 +    public void testSupplyAsync_normalCompletion() {
1285 +        ExecutionMode[] executionModes = {
1286 +            ExecutionMode.ASYNC,
1287 +            ExecutionMode.EXECUTOR,
1288 +        };
1289 +        for (ExecutionMode m : executionModes)
1290 +        for (Integer v1 : new Integer[] { 1, null })
1291 +    {
1292 +        final IntegerSupplier r = new IntegerSupplier(m, v1);
1293 +        final CompletableFuture<Integer> f = m.supplyAsync(r);
1294 +        assertSame(v1, f.join());
1295 +        checkCompletedNormally(f, v1);
1296 +        r.assertInvoked();
1297 +    }}
1298 +
1299 +    /**
1300 +     * Failing supplyAsync completes exceptionally
1301 +     */
1302 +    public void testSupplyAsync_exceptionalCompletion() {
1303 +        ExecutionMode[] executionModes = {
1304 +            ExecutionMode.ASYNC,
1305 +            ExecutionMode.EXECUTOR,
1306 +        };
1307 +        for (ExecutionMode m : executionModes)
1308 +    {
1309 +        FailingSupplier r = new FailingSupplier(m);
1310 +        CompletableFuture<Integer> f = m.supplyAsync(r);
1311 +        checkCompletedWithWrappedCFException(f);
1312 +        r.assertInvoked();
1313 +    }}
1314 +
1315 +    // seq completion methods
1316 +
1317 +    /**
1318 +     * thenRun result completes normally after normal completion of source
1319 +     */
1320 +    public void testThenRun_normalCompletion() {
1321 +        for (ExecutionMode m : ExecutionMode.values())
1322 +        for (Integer v1 : new Integer[] { 1, null })
1323 +    {
1324 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1325 +        final Noop[] rs = new Noop[6];
1326 +        for (int i = 0; i < rs.length; i++) rs[i] = new Noop(m);
1327 +
1328 +        final CompletableFuture<Void> h0 = m.thenRun(f, rs[0]);
1329 +        final CompletableFuture<Void> h1 = m.runAfterBoth(f, f, rs[1]);
1330 +        final CompletableFuture<Void> h2 = m.runAfterEither(f, f, rs[2]);
1331 +        checkIncomplete(h0);
1332 +        checkIncomplete(h1);
1333 +        checkIncomplete(h2);
1334 +        assertTrue(f.complete(v1));
1335 +        final CompletableFuture<Void> h3 = m.thenRun(f, rs[3]);
1336 +        final CompletableFuture<Void> h4 = m.runAfterBoth(f, f, rs[4]);
1337 +        final CompletableFuture<Void> h5 = m.runAfterEither(f, f, rs[5]);
1338 +
1339 +        checkCompletedNormally(h0, null);
1340 +        checkCompletedNormally(h1, null);
1341 +        checkCompletedNormally(h2, null);
1342 +        checkCompletedNormally(h3, null);
1343 +        checkCompletedNormally(h4, null);
1344 +        checkCompletedNormally(h5, null);
1345 +        checkCompletedNormally(f, v1);
1346 +        for (Noop r : rs) r.assertInvoked();
1347 +    }}
1348 +
1349 +    /**
1350 +     * thenRun result completes exceptionally after exceptional
1351 +     * completion of source
1352 +     */
1353 +    public void testThenRun_exceptionalCompletion() {
1354 +        for (ExecutionMode m : ExecutionMode.values())
1355 +    {
1356 +        final CFException ex = new CFException();
1357 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1358 +        final Noop[] rs = new Noop[6];
1359 +        for (int i = 0; i < rs.length; i++) rs[i] = new Noop(m);
1360 +
1361 +        final CompletableFuture<Void> h0 = m.thenRun(f, rs[0]);
1362 +        final CompletableFuture<Void> h1 = m.runAfterBoth(f, f, rs[1]);
1363 +        final CompletableFuture<Void> h2 = m.runAfterEither(f, f, rs[2]);
1364 +        checkIncomplete(h0);
1365 +        checkIncomplete(h1);
1366 +        checkIncomplete(h2);
1367 +        assertTrue(f.completeExceptionally(ex));
1368 +        final CompletableFuture<Void> h3 = m.thenRun(f, rs[3]);
1369 +        final CompletableFuture<Void> h4 = m.runAfterBoth(f, f, rs[4]);
1370 +        final CompletableFuture<Void> h5 = m.runAfterEither(f, f, rs[5]);
1371 +
1372 +        checkCompletedWithWrappedException(h0, ex);
1373 +        checkCompletedWithWrappedException(h1, ex);
1374 +        checkCompletedWithWrappedException(h2, ex);
1375 +        checkCompletedWithWrappedException(h3, ex);
1376 +        checkCompletedWithWrappedException(h4, ex);
1377 +        checkCompletedWithWrappedException(h5, ex);
1378 +        checkCompletedExceptionally(f, ex);
1379 +        for (Noop r : rs) r.assertNotInvoked();
1380 +    }}
1381 +
1382 +    /**
1383 +     * thenRun result completes exceptionally if source cancelled
1384 +     */
1385 +    public void testThenRun_sourceCancelled() {
1386 +        for (ExecutionMode m : ExecutionMode.values())
1387 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1388 +    {
1389 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1390 +        final Noop[] rs = new Noop[6];
1391 +        for (int i = 0; i < rs.length; i++) rs[i] = new Noop(m);
1392 +
1393 +        final CompletableFuture<Void> h0 = m.thenRun(f, rs[0]);
1394 +        final CompletableFuture<Void> h1 = m.runAfterBoth(f, f, rs[1]);
1395 +        final CompletableFuture<Void> h2 = m.runAfterEither(f, f, rs[2]);
1396 +        checkIncomplete(h0);
1397 +        checkIncomplete(h1);
1398 +        checkIncomplete(h2);
1399 +        assertTrue(f.cancel(mayInterruptIfRunning));
1400 +        final CompletableFuture<Void> h3 = m.thenRun(f, rs[3]);
1401 +        final CompletableFuture<Void> h4 = m.runAfterBoth(f, f, rs[4]);
1402 +        final CompletableFuture<Void> h5 = m.runAfterEither(f, f, rs[5]);
1403 +
1404 +        checkCompletedWithWrappedCancellationException(h0);
1405 +        checkCompletedWithWrappedCancellationException(h1);
1406 +        checkCompletedWithWrappedCancellationException(h2);
1407 +        checkCompletedWithWrappedCancellationException(h3);
1408 +        checkCompletedWithWrappedCancellationException(h4);
1409 +        checkCompletedWithWrappedCancellationException(h5);
1410 +        checkCancelled(f);
1411 +        for (Noop r : rs) r.assertNotInvoked();
1412 +    }}
1413 +
1414 +    /**
1415 +     * thenRun result completes exceptionally if action does
1416 +     */
1417 +    public void testThenRun_actionFailed() {
1418 +        for (ExecutionMode m : ExecutionMode.values())
1419 +        for (Integer v1 : new Integer[] { 1, null })
1420 +    {
1421 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1422 +        final FailingRunnable[] rs = new FailingRunnable[6];
1423 +        for (int i = 0; i < rs.length; i++) rs[i] = new FailingRunnable(m);
1424 +
1425 +        final CompletableFuture<Void> h0 = m.thenRun(f, rs[0]);
1426 +        final CompletableFuture<Void> h1 = m.runAfterBoth(f, f, rs[1]);
1427 +        final CompletableFuture<Void> h2 = m.runAfterEither(f, f, rs[2]);
1428 +        assertTrue(f.complete(v1));
1429 +        final CompletableFuture<Void> h3 = m.thenRun(f, rs[3]);
1430 +        final CompletableFuture<Void> h4 = m.runAfterBoth(f, f, rs[4]);
1431 +        final CompletableFuture<Void> h5 = m.runAfterEither(f, f, rs[5]);
1432 +
1433 +        checkCompletedWithWrappedCFException(h0);
1434 +        checkCompletedWithWrappedCFException(h1);
1435 +        checkCompletedWithWrappedCFException(h2);
1436 +        checkCompletedWithWrappedCFException(h3);
1437 +        checkCompletedWithWrappedCFException(h4);
1438 +        checkCompletedWithWrappedCFException(h5);
1439 +        checkCompletedNormally(f, v1);
1440 +    }}
1441 +
1442 +    /**
1443 +     * thenApply result completes normally after normal completion of source
1444 +     */
1445 +    public void testThenApply_normalCompletion() {
1446 +        for (ExecutionMode m : ExecutionMode.values())
1447 +        for (Integer v1 : new Integer[] { 1, null })
1448 +    {
1449 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1450 +        final IncFunction[] rs = new IncFunction[4];
1451 +        for (int i = 0; i < rs.length; i++) rs[i] = new IncFunction(m);
1452 +
1453 +        final CompletableFuture<Integer> h0 = m.thenApply(f, rs[0]);
1454 +        final CompletableFuture<Integer> h1 = m.applyToEither(f, f, rs[1]);
1455 +        checkIncomplete(h0);
1456 +        checkIncomplete(h1);
1457 +        assertTrue(f.complete(v1));
1458 +        final CompletableFuture<Integer> h2 = m.thenApply(f, rs[2]);
1459 +        final CompletableFuture<Integer> h3 = m.applyToEither(f, f, rs[3]);
1460 +
1461 +        checkCompletedNormally(h0, inc(v1));
1462 +        checkCompletedNormally(h1, inc(v1));
1463 +        checkCompletedNormally(h2, inc(v1));
1464 +        checkCompletedNormally(h3, inc(v1));
1465 +        checkCompletedNormally(f, v1);
1466 +        for (IncFunction r : rs) r.assertValue(inc(v1));
1467 +    }}
1468 +
1469 +    /**
1470 +     * thenApply result completes exceptionally after exceptional
1471 +     * completion of source
1472 +     */
1473 +    public void testThenApply_exceptionalCompletion() {
1474 +        for (ExecutionMode m : ExecutionMode.values())
1475 +    {
1476 +        final CFException ex = new CFException();
1477 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1478 +        final IncFunction[] rs = new IncFunction[4];
1479 +        for (int i = 0; i < rs.length; i++) rs[i] = new IncFunction(m);
1480 +
1481 +        final CompletableFuture<Integer> h0 = m.thenApply(f, rs[0]);
1482 +        final CompletableFuture<Integer> h1 = m.applyToEither(f, f, rs[1]);
1483 +        assertTrue(f.completeExceptionally(ex));
1484 +        final CompletableFuture<Integer> h2 = m.thenApply(f, rs[2]);
1485 +        final CompletableFuture<Integer> h3 = m.applyToEither(f, f, rs[3]);
1486 +
1487 +        checkCompletedWithWrappedException(h0, ex);
1488 +        checkCompletedWithWrappedException(h1, ex);
1489 +        checkCompletedWithWrappedException(h2, ex);
1490 +        checkCompletedWithWrappedException(h3, ex);
1491 +        checkCompletedExceptionally(f, ex);
1492 +        for (IncFunction r : rs) r.assertNotInvoked();
1493 +    }}
1494 +
1495 +    /**
1496 +     * thenApply result completes exceptionally if source cancelled
1497 +     */
1498 +    public void testThenApply_sourceCancelled() {
1499 +        for (ExecutionMode m : ExecutionMode.values())
1500 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1501 +    {
1502 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1503 +        final IncFunction[] rs = new IncFunction[4];
1504 +        for (int i = 0; i < rs.length; i++) rs[i] = new IncFunction(m);
1505 +
1506 +        final CompletableFuture<Integer> h0 = m.thenApply(f, rs[0]);
1507 +        final CompletableFuture<Integer> h1 = m.applyToEither(f, f, rs[1]);
1508 +        assertTrue(f.cancel(mayInterruptIfRunning));
1509 +        final CompletableFuture<Integer> h2 = m.thenApply(f, rs[2]);
1510 +        final CompletableFuture<Integer> h3 = m.applyToEither(f, f, rs[3]);
1511 +
1512 +        checkCompletedWithWrappedCancellationException(h0);
1513 +        checkCompletedWithWrappedCancellationException(h1);
1514 +        checkCompletedWithWrappedCancellationException(h2);
1515 +        checkCompletedWithWrappedCancellationException(h3);
1516 +        checkCancelled(f);
1517 +        for (IncFunction r : rs) r.assertNotInvoked();
1518 +    }}
1519 +
1520 +    /**
1521 +     * thenApply result completes exceptionally if action does
1522 +     */
1523 +    public void testThenApply_actionFailed() {
1524 +        for (ExecutionMode m : ExecutionMode.values())
1525 +        for (Integer v1 : new Integer[] { 1, null })
1526 +    {
1527 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1528 +        final FailingFunction[] rs = new FailingFunction[4];
1529 +        for (int i = 0; i < rs.length; i++) rs[i] = new FailingFunction(m);
1530 +
1531 +        final CompletableFuture<Integer> h0 = m.thenApply(f, rs[0]);
1532 +        final CompletableFuture<Integer> h1 = m.applyToEither(f, f, rs[1]);
1533 +        assertTrue(f.complete(v1));
1534 +        final CompletableFuture<Integer> h2 = m.thenApply(f, rs[2]);
1535 +        final CompletableFuture<Integer> h3 = m.applyToEither(f, f, rs[3]);
1536 +
1537 +        checkCompletedWithWrappedCFException(h0);
1538 +        checkCompletedWithWrappedCFException(h1);
1539 +        checkCompletedWithWrappedCFException(h2);
1540 +        checkCompletedWithWrappedCFException(h3);
1541 +        checkCompletedNormally(f, v1);
1542 +    }}
1543 +
1544 +    /**
1545 +     * thenAccept result completes normally after normal completion of source
1546 +     */
1547 +    public void testThenAccept_normalCompletion() {
1548 +        for (ExecutionMode m : ExecutionMode.values())
1549 +        for (Integer v1 : new Integer[] { 1, null })
1550 +    {
1551 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1552 +        final NoopConsumer[] rs = new NoopConsumer[4];
1553 +        for (int i = 0; i < rs.length; i++) rs[i] = new NoopConsumer(m);
1554 +
1555 +        final CompletableFuture<Void> h0 = m.thenAccept(f, rs[0]);
1556 +        final CompletableFuture<Void> h1 = m.acceptEither(f, f, rs[1]);
1557 +        checkIncomplete(h0);
1558 +        checkIncomplete(h1);
1559 +        assertTrue(f.complete(v1));
1560 +        final CompletableFuture<Void> h2 = m.thenAccept(f, rs[2]);
1561 +        final CompletableFuture<Void> h3 = m.acceptEither(f, f, rs[3]);
1562 +
1563 +        checkCompletedNormally(h0, null);
1564 +        checkCompletedNormally(h1, null);
1565 +        checkCompletedNormally(h2, null);
1566 +        checkCompletedNormally(h3, null);
1567 +        checkCompletedNormally(f, v1);
1568 +        for (NoopConsumer r : rs) r.assertValue(v1);
1569 +    }}
1570 +
1571 +    /**
1572 +     * thenAccept result completes exceptionally after exceptional
1573 +     * completion of source
1574 +     */
1575 +    public void testThenAccept_exceptionalCompletion() {
1576 +        for (ExecutionMode m : ExecutionMode.values())
1577 +    {
1578 +        final CFException ex = new CFException();
1579 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1580 +        final NoopConsumer[] rs = new NoopConsumer[4];
1581 +        for (int i = 0; i < rs.length; i++) rs[i] = new NoopConsumer(m);
1582 +
1583 +        final CompletableFuture<Void> h0 = m.thenAccept(f, rs[0]);
1584 +        final CompletableFuture<Void> h1 = m.acceptEither(f, f, rs[1]);
1585 +        assertTrue(f.completeExceptionally(ex));
1586 +        final CompletableFuture<Void> h2 = m.thenAccept(f, rs[2]);
1587 +        final CompletableFuture<Void> h3 = m.acceptEither(f, f, rs[3]);
1588 +
1589 +        checkCompletedWithWrappedException(h0, ex);
1590 +        checkCompletedWithWrappedException(h1, ex);
1591 +        checkCompletedWithWrappedException(h2, ex);
1592 +        checkCompletedWithWrappedException(h3, ex);
1593 +        checkCompletedExceptionally(f, ex);
1594 +        for (NoopConsumer r : rs) r.assertNotInvoked();
1595 +    }}
1596 +
1597 +    /**
1598 +     * thenAccept result completes exceptionally if source cancelled
1599 +     */
1600 +    public void testThenAccept_sourceCancelled() {
1601 +        for (ExecutionMode m : ExecutionMode.values())
1602 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1603 +    {
1604 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1605 +        final NoopConsumer[] rs = new NoopConsumer[4];
1606 +        for (int i = 0; i < rs.length; i++) rs[i] = new NoopConsumer(m);
1607 +
1608 +        final CompletableFuture<Void> h0 = m.thenAccept(f, rs[0]);
1609 +        final CompletableFuture<Void> h1 = m.acceptEither(f, f, rs[1]);
1610 +        assertTrue(f.cancel(mayInterruptIfRunning));
1611 +        final CompletableFuture<Void> h2 = m.thenAccept(f, rs[2]);
1612 +        final CompletableFuture<Void> h3 = m.acceptEither(f, f, rs[3]);
1613 +
1614 +        checkCompletedWithWrappedCancellationException(h0);
1615 +        checkCompletedWithWrappedCancellationException(h1);
1616 +        checkCompletedWithWrappedCancellationException(h2);
1617 +        checkCompletedWithWrappedCancellationException(h3);
1618 +        checkCancelled(f);
1619 +        for (NoopConsumer r : rs) r.assertNotInvoked();
1620 +    }}
1621 +
1622 +    /**
1623 +     * thenAccept result completes exceptionally if action does
1624 +     */
1625 +    public void testThenAccept_actionFailed() {
1626 +        for (ExecutionMode m : ExecutionMode.values())
1627 +        for (Integer v1 : new Integer[] { 1, null })
1628 +    {
1629 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1630 +        final FailingConsumer[] rs = new FailingConsumer[4];
1631 +        for (int i = 0; i < rs.length; i++) rs[i] = new FailingConsumer(m);
1632 +
1633 +        final CompletableFuture<Void> h0 = m.thenAccept(f, rs[0]);
1634 +        final CompletableFuture<Void> h1 = m.acceptEither(f, f, rs[1]);
1635 +        assertTrue(f.complete(v1));
1636 +        final CompletableFuture<Void> h2 = m.thenAccept(f, rs[2]);
1637 +        final CompletableFuture<Void> h3 = m.acceptEither(f, f, rs[3]);
1638 +
1639 +        checkCompletedWithWrappedCFException(h0);
1640 +        checkCompletedWithWrappedCFException(h1);
1641 +        checkCompletedWithWrappedCFException(h2);
1642 +        checkCompletedWithWrappedCFException(h3);
1643 +        checkCompletedNormally(f, v1);
1644 +    }}
1645 +
1646 +    /**
1647 +     * thenCombine result completes normally after normal completion
1648 +     * of sources
1649 +     */
1650 +    public void testThenCombine_normalCompletion() {
1651 +        for (ExecutionMode m : ExecutionMode.values())
1652 +        for (boolean fFirst : new boolean[] { true, false })
1653 +        for (Integer v1 : new Integer[] { 1, null })
1654 +        for (Integer v2 : new Integer[] { 2, null })
1655 +    {
1656 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1657 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1658 +        final SubtractFunction[] rs = new SubtractFunction[6];
1659 +        for (int i = 0; i < rs.length; i++) rs[i] = new SubtractFunction(m);
1660 +
1661 +        final CompletableFuture<Integer> fst =  fFirst ? f : g;
1662 +        final CompletableFuture<Integer> snd = !fFirst ? f : g;
1663 +        final Integer w1 =  fFirst ? v1 : v2;
1664 +        final Integer w2 = !fFirst ? v1 : v2;
1665 +
1666 +        final CompletableFuture<Integer> h0 = m.thenCombine(f, g, rs[0]);
1667 +        final CompletableFuture<Integer> h1 = m.thenCombine(fst, fst, rs[1]);
1668 +        assertTrue(fst.complete(w1));
1669 +        final CompletableFuture<Integer> h2 = m.thenCombine(f, g, rs[2]);
1670 +        final CompletableFuture<Integer> h3 = m.thenCombine(fst, fst, rs[3]);
1671 +        checkIncomplete(h0); rs[0].assertNotInvoked();
1672 +        checkIncomplete(h2); rs[2].assertNotInvoked();
1673 +        checkCompletedNormally(h1, subtract(w1, w1));
1674 +        checkCompletedNormally(h3, subtract(w1, w1));
1675 +        rs[1].assertValue(subtract(w1, w1));
1676 +        rs[3].assertValue(subtract(w1, w1));
1677 +        assertTrue(snd.complete(w2));
1678 +        final CompletableFuture<Integer> h4 = m.thenCombine(f, g, rs[4]);
1679 +
1680 +        checkCompletedNormally(h0, subtract(v1, v2));
1681 +        checkCompletedNormally(h2, subtract(v1, v2));
1682 +        checkCompletedNormally(h4, subtract(v1, v2));
1683 +        rs[0].assertValue(subtract(v1, v2));
1684 +        rs[2].assertValue(subtract(v1, v2));
1685 +        rs[4].assertValue(subtract(v1, v2));
1686 +
1687 +        checkCompletedNormally(f, v1);
1688 +        checkCompletedNormally(g, v2);
1689 +    }}
1690 +
1691 +    /**
1692 +     * thenCombine result completes exceptionally after exceptional
1693 +     * completion of either source
1694 +     */
1695 +    public void testThenCombine_exceptionalCompletion() throws Throwable {
1696 +        for (ExecutionMode m : ExecutionMode.values())
1697 +        for (boolean fFirst : new boolean[] { true, false })
1698 +        for (boolean failFirst : new boolean[] { true, false })
1699 +        for (Integer v1 : new Integer[] { 1, null })
1700 +    {
1701 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1702 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1703 +        final CFException ex = new CFException();
1704 +        final SubtractFunction r1 = new SubtractFunction(m);
1705 +        final SubtractFunction r2 = new SubtractFunction(m);
1706 +        final SubtractFunction r3 = new SubtractFunction(m);
1707 +
1708 +        final CompletableFuture<Integer> fst =  fFirst ? f : g;
1709 +        final CompletableFuture<Integer> snd = !fFirst ? f : g;
1710 +        final Callable<Boolean> complete1 = failFirst ?
1711 +            () -> fst.completeExceptionally(ex) :
1712 +            () -> fst.complete(v1);
1713 +        final Callable<Boolean> complete2 = failFirst ?
1714 +            () -> snd.complete(v1) :
1715 +            () -> snd.completeExceptionally(ex);
1716 +
1717 +        final CompletableFuture<Integer> h1 = m.thenCombine(f, g, r1);
1718 +        assertTrue(complete1.call());
1719 +        final CompletableFuture<Integer> h2 = m.thenCombine(f, g, r2);
1720 +        checkIncomplete(h1);
1721 +        checkIncomplete(h2);
1722 +        assertTrue(complete2.call());
1723 +        final CompletableFuture<Integer> h3 = m.thenCombine(f, g, r3);
1724 +
1725 +        checkCompletedWithWrappedException(h1, ex);
1726 +        checkCompletedWithWrappedException(h2, ex);
1727 +        checkCompletedWithWrappedException(h3, ex);
1728 +        r1.assertNotInvoked();
1729 +        r2.assertNotInvoked();
1730 +        r3.assertNotInvoked();
1731 +        checkCompletedNormally(failFirst ? snd : fst, v1);
1732 +        checkCompletedExceptionally(failFirst ? fst : snd, ex);
1733 +    }}
1734 +
1735 +    /**
1736 +     * thenCombine result completes exceptionally if either source cancelled
1737 +     */
1738 +    public void testThenCombine_sourceCancelled() throws Throwable {
1739 +        for (ExecutionMode m : ExecutionMode.values())
1740 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1741 +        for (boolean fFirst : new boolean[] { true, false })
1742 +        for (boolean failFirst : new boolean[] { true, false })
1743 +        for (Integer v1 : new Integer[] { 1, null })
1744 +    {
1745 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1746 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1747 +        final SubtractFunction r1 = new SubtractFunction(m);
1748 +        final SubtractFunction r2 = new SubtractFunction(m);
1749 +        final SubtractFunction r3 = new SubtractFunction(m);
1750 +
1751 +        final CompletableFuture<Integer> fst =  fFirst ? f : g;
1752 +        final CompletableFuture<Integer> snd = !fFirst ? f : g;
1753 +        final Callable<Boolean> complete1 = failFirst ?
1754 +            () -> fst.cancel(mayInterruptIfRunning) :
1755 +            () -> fst.complete(v1);
1756 +        final Callable<Boolean> complete2 = failFirst ?
1757 +            () -> snd.complete(v1) :
1758 +            () -> snd.cancel(mayInterruptIfRunning);
1759 +
1760 +        final CompletableFuture<Integer> h1 = m.thenCombine(f, g, r1);
1761 +        assertTrue(complete1.call());
1762 +        final CompletableFuture<Integer> h2 = m.thenCombine(f, g, r2);
1763 +        checkIncomplete(h1);
1764 +        checkIncomplete(h2);
1765 +        assertTrue(complete2.call());
1766 +        final CompletableFuture<Integer> h3 = m.thenCombine(f, g, r3);
1767 +
1768 +        checkCompletedWithWrappedCancellationException(h1);
1769 +        checkCompletedWithWrappedCancellationException(h2);
1770 +        checkCompletedWithWrappedCancellationException(h3);
1771 +        r1.assertNotInvoked();
1772 +        r2.assertNotInvoked();
1773 +        r3.assertNotInvoked();
1774 +        checkCompletedNormally(failFirst ? snd : fst, v1);
1775 +        checkCancelled(failFirst ? fst : snd);
1776 +    }}
1777 +
1778 +    /**
1779 +     * thenCombine result completes exceptionally if action does
1780 +     */
1781 +    public void testThenCombine_actionFailed() {
1782 +        for (ExecutionMode m : ExecutionMode.values())
1783 +        for (boolean fFirst : new boolean[] { true, false })
1784 +        for (Integer v1 : new Integer[] { 1, null })
1785 +        for (Integer v2 : new Integer[] { 2, null })
1786 +    {
1787 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1788 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1789 +        final FailingBiFunction r1 = new FailingBiFunction(m);
1790 +        final FailingBiFunction r2 = new FailingBiFunction(m);
1791 +        final FailingBiFunction r3 = new FailingBiFunction(m);
1792 +
1793 +        final CompletableFuture<Integer> fst =  fFirst ? f : g;
1794 +        final CompletableFuture<Integer> snd = !fFirst ? f : g;
1795 +        final Integer w1 =  fFirst ? v1 : v2;
1796 +        final Integer w2 = !fFirst ? v1 : v2;
1797 +
1798 +        final CompletableFuture<Integer> h1 = m.thenCombine(f, g, r1);
1799 +        assertTrue(fst.complete(w1));
1800 +        final CompletableFuture<Integer> h2 = m.thenCombine(f, g, r2);
1801 +        assertTrue(snd.complete(w2));
1802 +        final CompletableFuture<Integer> h3 = m.thenCombine(f, g, r3);
1803 +
1804 +        checkCompletedWithWrappedCFException(h1);
1805 +        checkCompletedWithWrappedCFException(h2);
1806 +        checkCompletedWithWrappedCFException(h3);
1807 +        r1.assertInvoked();
1808 +        r2.assertInvoked();
1809 +        r3.assertInvoked();
1810 +        checkCompletedNormally(f, v1);
1811 +        checkCompletedNormally(g, v2);
1812 +    }}
1813 +
1814 +    /**
1815 +     * thenAcceptBoth result completes normally after normal
1816 +     * completion of sources
1817 +     */
1818 +    public void testThenAcceptBoth_normalCompletion() {
1819 +        for (ExecutionMode m : ExecutionMode.values())
1820 +        for (boolean fFirst : new boolean[] { true, false })
1821 +        for (Integer v1 : new Integer[] { 1, null })
1822 +        for (Integer v2 : new Integer[] { 2, null })
1823 +    {
1824 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1825 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1826 +        final SubtractAction r1 = new SubtractAction(m);
1827 +        final SubtractAction r2 = new SubtractAction(m);
1828 +        final SubtractAction r3 = new SubtractAction(m);
1829 +
1830 +        final CompletableFuture<Integer> fst =  fFirst ? f : g;
1831 +        final CompletableFuture<Integer> snd = !fFirst ? f : g;
1832 +        final Integer w1 =  fFirst ? v1 : v2;
1833 +        final Integer w2 = !fFirst ? v1 : v2;
1834 +
1835 +        final CompletableFuture<Void> h1 = m.thenAcceptBoth(f, g, r1);
1836 +        assertTrue(fst.complete(w1));
1837 +        final CompletableFuture<Void> h2 = m.thenAcceptBoth(f, g, r2);
1838 +        checkIncomplete(h1);
1839 +        checkIncomplete(h2);
1840 +        r1.assertNotInvoked();
1841 +        r2.assertNotInvoked();
1842 +        assertTrue(snd.complete(w2));
1843 +        final CompletableFuture<Void> h3 = m.thenAcceptBoth(f, g, r3);
1844 +
1845 +        checkCompletedNormally(h1, null);
1846 +        checkCompletedNormally(h2, null);
1847 +        checkCompletedNormally(h3, null);
1848 +        r1.assertValue(subtract(v1, v2));
1849 +        r2.assertValue(subtract(v1, v2));
1850 +        r3.assertValue(subtract(v1, v2));
1851 +        checkCompletedNormally(f, v1);
1852 +        checkCompletedNormally(g, v2);
1853 +    }}
1854 +
1855 +    /**
1856 +     * thenAcceptBoth result completes exceptionally after exceptional
1857 +     * completion of either source
1858 +     */
1859 +    public void testThenAcceptBoth_exceptionalCompletion() throws Throwable {
1860 +        for (ExecutionMode m : ExecutionMode.values())
1861 +        for (boolean fFirst : new boolean[] { true, false })
1862 +        for (boolean failFirst : new boolean[] { true, false })
1863 +        for (Integer v1 : new Integer[] { 1, null })
1864 +    {
1865 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1866 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1867 +        final CFException ex = new CFException();
1868 +        final SubtractAction r1 = new SubtractAction(m);
1869 +        final SubtractAction r2 = new SubtractAction(m);
1870 +        final SubtractAction r3 = new SubtractAction(m);
1871 +
1872 +        final CompletableFuture<Integer> fst =  fFirst ? f : g;
1873 +        final CompletableFuture<Integer> snd = !fFirst ? f : g;
1874 +        final Callable<Boolean> complete1 = failFirst ?
1875 +            () -> fst.completeExceptionally(ex) :
1876 +            () -> fst.complete(v1);
1877 +        final Callable<Boolean> complete2 = failFirst ?
1878 +            () -> snd.complete(v1) :
1879 +            () -> snd.completeExceptionally(ex);
1880 +
1881 +        final CompletableFuture<Void> h1 = m.thenAcceptBoth(f, g, r1);
1882 +        assertTrue(complete1.call());
1883 +        final CompletableFuture<Void> h2 = m.thenAcceptBoth(f, g, r2);
1884 +        checkIncomplete(h1);
1885 +        checkIncomplete(h2);
1886 +        assertTrue(complete2.call());
1887 +        final CompletableFuture<Void> h3 = m.thenAcceptBoth(f, g, r3);
1888 +
1889 +        checkCompletedWithWrappedException(h1, ex);
1890 +        checkCompletedWithWrappedException(h2, ex);
1891 +        checkCompletedWithWrappedException(h3, ex);
1892 +        r1.assertNotInvoked();
1893 +        r2.assertNotInvoked();
1894 +        r3.assertNotInvoked();
1895 +        checkCompletedNormally(failFirst ? snd : fst, v1);
1896 +        checkCompletedExceptionally(failFirst ? fst : snd, ex);
1897 +    }}
1898 +
1899 +    /**
1900 +     * thenAcceptBoth result completes exceptionally if either source cancelled
1901 +     */
1902 +    public void testThenAcceptBoth_sourceCancelled() throws Throwable {
1903 +        for (ExecutionMode m : ExecutionMode.values())
1904 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1905 +        for (boolean fFirst : new boolean[] { true, false })
1906 +        for (boolean failFirst : new boolean[] { true, false })
1907 +        for (Integer v1 : new Integer[] { 1, null })
1908 +    {
1909 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1910 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1911 +        final SubtractAction r1 = new SubtractAction(m);
1912 +        final SubtractAction r2 = new SubtractAction(m);
1913 +        final SubtractAction r3 = new SubtractAction(m);
1914 +
1915 +        final CompletableFuture<Integer> fst =  fFirst ? f : g;
1916 +        final CompletableFuture<Integer> snd = !fFirst ? f : g;
1917 +        final Callable<Boolean> complete1 = failFirst ?
1918 +            () -> fst.cancel(mayInterruptIfRunning) :
1919 +            () -> fst.complete(v1);
1920 +        final Callable<Boolean> complete2 = failFirst ?
1921 +            () -> snd.complete(v1) :
1922 +            () -> snd.cancel(mayInterruptIfRunning);
1923 +
1924 +        final CompletableFuture<Void> h1 = m.thenAcceptBoth(f, g, r1);
1925 +        assertTrue(complete1.call());
1926 +        final CompletableFuture<Void> h2 = m.thenAcceptBoth(f, g, r2);
1927 +        checkIncomplete(h1);
1928 +        checkIncomplete(h2);
1929 +        assertTrue(complete2.call());
1930 +        final CompletableFuture<Void> h3 = m.thenAcceptBoth(f, g, r3);
1931 +
1932 +        checkCompletedWithWrappedCancellationException(h1);
1933 +        checkCompletedWithWrappedCancellationException(h2);
1934 +        checkCompletedWithWrappedCancellationException(h3);
1935 +        r1.assertNotInvoked();
1936 +        r2.assertNotInvoked();
1937 +        r3.assertNotInvoked();
1938 +        checkCompletedNormally(failFirst ? snd : fst, v1);
1939 +        checkCancelled(failFirst ? fst : snd);
1940 +    }}
1941 +
1942 +    /**
1943 +     * thenAcceptBoth result completes exceptionally if action does
1944 +     */
1945 +    public void testThenAcceptBoth_actionFailed() {
1946 +        for (ExecutionMode m : ExecutionMode.values())
1947 +        for (boolean fFirst : new boolean[] { true, false })
1948 +        for (Integer v1 : new Integer[] { 1, null })
1949 +        for (Integer v2 : new Integer[] { 2, null })
1950 +    {
1951 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1952 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1953 +        final FailingBiConsumer r1 = new FailingBiConsumer(m);
1954 +        final FailingBiConsumer r2 = new FailingBiConsumer(m);
1955 +        final FailingBiConsumer r3 = new FailingBiConsumer(m);
1956 +
1957 +        final CompletableFuture<Integer> fst =  fFirst ? f : g;
1958 +        final CompletableFuture<Integer> snd = !fFirst ? f : g;
1959 +        final Integer w1 =  fFirst ? v1 : v2;
1960 +        final Integer w2 = !fFirst ? v1 : v2;
1961 +
1962 +        final CompletableFuture<Void> h1 = m.thenAcceptBoth(f, g, r1);
1963 +        assertTrue(fst.complete(w1));
1964 +        final CompletableFuture<Void> h2 = m.thenAcceptBoth(f, g, r2);
1965 +        assertTrue(snd.complete(w2));
1966 +        final CompletableFuture<Void> h3 = m.thenAcceptBoth(f, g, r3);
1967 +
1968 +        checkCompletedWithWrappedCFException(h1);
1969 +        checkCompletedWithWrappedCFException(h2);
1970 +        checkCompletedWithWrappedCFException(h3);
1971 +        r1.assertInvoked();
1972 +        r2.assertInvoked();
1973 +        r3.assertInvoked();
1974 +        checkCompletedNormally(f, v1);
1975 +        checkCompletedNormally(g, v2);
1976 +    }}
1977 +
1978 +    /**
1979 +     * runAfterBoth result completes normally after normal
1980 +     * completion of sources
1981 +     */
1982 +    public void testRunAfterBoth_normalCompletion() {
1983 +        for (ExecutionMode m : ExecutionMode.values())
1984 +        for (boolean fFirst : new boolean[] { true, false })
1985 +        for (Integer v1 : new Integer[] { 1, null })
1986 +        for (Integer v2 : new Integer[] { 2, null })
1987 +    {
1988 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1989 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1990 +        final Noop r1 = new Noop(m);
1991 +        final Noop r2 = new Noop(m);
1992 +        final Noop r3 = new Noop(m);
1993 +
1994 +        final CompletableFuture<Integer> fst =  fFirst ? f : g;
1995 +        final CompletableFuture<Integer> snd = !fFirst ? f : g;
1996 +        final Integer w1 =  fFirst ? v1 : v2;
1997 +        final Integer w2 = !fFirst ? v1 : v2;
1998 +
1999 +        final CompletableFuture<Void> h1 = m.runAfterBoth(f, g, r1);
2000 +        assertTrue(fst.complete(w1));
2001 +        final CompletableFuture<Void> h2 = m.runAfterBoth(f, g, r2);
2002 +        checkIncomplete(h1);
2003 +        checkIncomplete(h2);
2004 +        r1.assertNotInvoked();
2005 +        r2.assertNotInvoked();
2006 +        assertTrue(snd.complete(w2));
2007 +        final CompletableFuture<Void> h3 = m.runAfterBoth(f, g, r3);
2008 +
2009 +        checkCompletedNormally(h1, null);
2010 +        checkCompletedNormally(h2, null);
2011 +        checkCompletedNormally(h3, null);
2012 +        r1.assertInvoked();
2013 +        r2.assertInvoked();
2014 +        r3.assertInvoked();
2015 +        checkCompletedNormally(f, v1);
2016 +        checkCompletedNormally(g, v2);
2017 +    }}
2018 +
2019 +    /**
2020 +     * runAfterBoth result completes exceptionally after exceptional
2021 +     * completion of either source
2022 +     */
2023 +    public void testRunAfterBoth_exceptionalCompletion() throws Throwable {
2024 +        for (ExecutionMode m : ExecutionMode.values())
2025 +        for (boolean fFirst : new boolean[] { true, false })
2026 +        for (boolean failFirst : new boolean[] { true, false })
2027 +        for (Integer v1 : new Integer[] { 1, null })
2028 +    {
2029 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2030 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2031 +        final CFException ex = new CFException();
2032 +        final Noop r1 = new Noop(m);
2033 +        final Noop r2 = new Noop(m);
2034 +        final Noop r3 = new Noop(m);
2035 +
2036 +        final CompletableFuture<Integer> fst =  fFirst ? f : g;
2037 +        final CompletableFuture<Integer> snd = !fFirst ? f : g;
2038 +        final Callable<Boolean> complete1 = failFirst ?
2039 +            () -> fst.completeExceptionally(ex) :
2040 +            () -> fst.complete(v1);
2041 +        final Callable<Boolean> complete2 = failFirst ?
2042 +            () -> snd.complete(v1) :
2043 +            () -> snd.completeExceptionally(ex);
2044 +
2045 +        final CompletableFuture<Void> h1 = m.runAfterBoth(f, g, r1);
2046 +        assertTrue(complete1.call());
2047 +        final CompletableFuture<Void> h2 = m.runAfterBoth(f, g, r2);
2048 +        checkIncomplete(h1);
2049 +        checkIncomplete(h2);
2050 +        assertTrue(complete2.call());
2051 +        final CompletableFuture<Void> h3 = m.runAfterBoth(f, g, r3);
2052 +
2053 +        checkCompletedWithWrappedException(h1, ex);
2054 +        checkCompletedWithWrappedException(h2, ex);
2055 +        checkCompletedWithWrappedException(h3, ex);
2056 +        r1.assertNotInvoked();
2057 +        r2.assertNotInvoked();
2058 +        r3.assertNotInvoked();
2059 +        checkCompletedNormally(failFirst ? snd : fst, v1);
2060 +        checkCompletedExceptionally(failFirst ? fst : snd, ex);
2061 +    }}
2062 +
2063 +    /**
2064 +     * runAfterBoth result completes exceptionally if either source cancelled
2065 +     */
2066 +    public void testRunAfterBoth_sourceCancelled() throws Throwable {
2067 +        for (ExecutionMode m : ExecutionMode.values())
2068 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2069 +        for (boolean fFirst : new boolean[] { true, false })
2070 +        for (boolean failFirst : new boolean[] { true, false })
2071 +        for (Integer v1 : new Integer[] { 1, null })
2072 +    {
2073 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2074 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2075 +        final Noop r1 = new Noop(m);
2076 +        final Noop r2 = new Noop(m);
2077 +        final Noop r3 = new Noop(m);
2078 +
2079 +        final CompletableFuture<Integer> fst =  fFirst ? f : g;
2080 +        final CompletableFuture<Integer> snd = !fFirst ? f : g;
2081 +        final Callable<Boolean> complete1 = failFirst ?
2082 +            () -> fst.cancel(mayInterruptIfRunning) :
2083 +            () -> fst.complete(v1);
2084 +        final Callable<Boolean> complete2 = failFirst ?
2085 +            () -> snd.complete(v1) :
2086 +            () -> snd.cancel(mayInterruptIfRunning);
2087 +
2088 +        final CompletableFuture<Void> h1 = m.runAfterBoth(f, g, r1);
2089 +        assertTrue(complete1.call());
2090 +        final CompletableFuture<Void> h2 = m.runAfterBoth(f, g, r2);
2091 +        checkIncomplete(h1);
2092 +        checkIncomplete(h2);
2093 +        assertTrue(complete2.call());
2094 +        final CompletableFuture<Void> h3 = m.runAfterBoth(f, g, r3);
2095 +
2096 +        checkCompletedWithWrappedCancellationException(h1);
2097 +        checkCompletedWithWrappedCancellationException(h2);
2098 +        checkCompletedWithWrappedCancellationException(h3);
2099 +        r1.assertNotInvoked();
2100 +        r2.assertNotInvoked();
2101 +        r3.assertNotInvoked();
2102 +        checkCompletedNormally(failFirst ? snd : fst, v1);
2103 +        checkCancelled(failFirst ? fst : snd);
2104 +    }}
2105 +
2106 +    /**
2107 +     * runAfterBoth result completes exceptionally if action does
2108 +     */
2109 +    public void testRunAfterBoth_actionFailed() {
2110 +        for (ExecutionMode m : ExecutionMode.values())
2111 +        for (boolean fFirst : new boolean[] { true, false })
2112 +        for (Integer v1 : new Integer[] { 1, null })
2113 +        for (Integer v2 : new Integer[] { 2, null })
2114 +    {
2115 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2116 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2117 +        final FailingRunnable r1 = new FailingRunnable(m);
2118 +        final FailingRunnable r2 = new FailingRunnable(m);
2119 +        final FailingRunnable r3 = new FailingRunnable(m);
2120 +
2121 +        final CompletableFuture<Integer> fst =  fFirst ? f : g;
2122 +        final CompletableFuture<Integer> snd = !fFirst ? f : g;
2123 +        final Integer w1 =  fFirst ? v1 : v2;
2124 +        final Integer w2 = !fFirst ? v1 : v2;
2125 +
2126 +        final CompletableFuture<Void> h1 = m.runAfterBoth(f, g, r1);
2127 +        assertTrue(fst.complete(w1));
2128 +        final CompletableFuture<Void> h2 = m.runAfterBoth(f, g, r2);
2129 +        assertTrue(snd.complete(w2));
2130 +        final CompletableFuture<Void> h3 = m.runAfterBoth(f, g, r3);
2131 +
2132 +        checkCompletedWithWrappedCFException(h1);
2133 +        checkCompletedWithWrappedCFException(h2);
2134 +        checkCompletedWithWrappedCFException(h3);
2135 +        r1.assertInvoked();
2136 +        r2.assertInvoked();
2137 +        r3.assertInvoked();
2138 +        checkCompletedNormally(f, v1);
2139 +        checkCompletedNormally(g, v2);
2140 +    }}
2141 +
2142 +    /**
2143 +     * applyToEither result completes normally after normal completion
2144 +     * of either source
2145 +     */
2146 +    public void testApplyToEither_normalCompletion() {
2147 +        for (ExecutionMode m : ExecutionMode.values())
2148 +        for (Integer v1 : new Integer[] { 1, null })
2149 +        for (Integer v2 : new Integer[] { 2, null })
2150 +    {
2151 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2152 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2153 +        final IncFunction[] rs = new IncFunction[6];
2154 +        for (int i = 0; i < rs.length; i++) rs[i] = new IncFunction(m);
2155 +
2156 +        final CompletableFuture<Integer> h0 = m.applyToEither(f, g, rs[0]);
2157 +        final CompletableFuture<Integer> h1 = m.applyToEither(g, f, rs[1]);
2158 +        checkIncomplete(h0);
2159 +        checkIncomplete(h1);
2160 +        rs[0].assertNotInvoked();
2161 +        rs[1].assertNotInvoked();
2162 +        f.complete(v1);
2163 +        checkCompletedNormally(h0, inc(v1));
2164 +        checkCompletedNormally(h1, inc(v1));
2165 +        final CompletableFuture<Integer> h2 = m.applyToEither(f, g, rs[2]);
2166 +        final CompletableFuture<Integer> h3 = m.applyToEither(g, f, rs[3]);
2167 +        checkCompletedNormally(h2, inc(v1));
2168 +        checkCompletedNormally(h3, inc(v1));
2169 +        g.complete(v2);
2170 +
2171 +        // unspecified behavior - both source completions available
2172 +        final CompletableFuture<Integer> h4 = m.applyToEither(f, g, rs[4]);
2173 +        final CompletableFuture<Integer> h5 = m.applyToEither(g, f, rs[5]);
2174 +        rs[4].assertValue(h4.join());
2175 +        rs[5].assertValue(h5.join());
2176 +        assertTrue(Objects.equals(inc(v1), h4.join()) ||
2177 +                   Objects.equals(inc(v2), h4.join()));
2178 +        assertTrue(Objects.equals(inc(v1), h5.join()) ||
2179 +                   Objects.equals(inc(v2), h5.join()));
2180 +
2181 +        checkCompletedNormally(f, v1);
2182 +        checkCompletedNormally(g, v2);
2183 +        checkCompletedNormally(h0, inc(v1));
2184 +        checkCompletedNormally(h1, inc(v1));
2185 +        checkCompletedNormally(h2, inc(v1));
2186 +        checkCompletedNormally(h3, inc(v1));
2187 +        for (int i = 0; i < 4; i++) rs[i].assertValue(inc(v1));
2188 +    }}
2189 +
2190 +    /**
2191 +     * applyToEither result completes exceptionally after exceptional
2192 +     * completion of either source
2193 +     */
2194 +    public void testApplyToEither_exceptionalCompletion() {
2195 +        for (ExecutionMode m : ExecutionMode.values())
2196 +        for (Integer v1 : new Integer[] { 1, null })
2197 +    {
2198 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2199 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2200 +        final CFException ex = new CFException();
2201 +        final IncFunction[] rs = new IncFunction[6];
2202 +        for (int i = 0; i < rs.length; i++) rs[i] = new IncFunction(m);
2203 +
2204 +        final CompletableFuture<Integer> h0 = m.applyToEither(f, g, rs[0]);
2205 +        final CompletableFuture<Integer> h1 = m.applyToEither(g, f, rs[1]);
2206 +        checkIncomplete(h0);
2207 +        checkIncomplete(h1);
2208 +        rs[0].assertNotInvoked();
2209 +        rs[1].assertNotInvoked();
2210 +        f.completeExceptionally(ex);
2211 +        checkCompletedWithWrappedException(h0, ex);
2212 +        checkCompletedWithWrappedException(h1, ex);
2213 +        final CompletableFuture<Integer> h2 = m.applyToEither(f, g, rs[2]);
2214 +        final CompletableFuture<Integer> h3 = m.applyToEither(g, f, rs[3]);
2215 +        checkCompletedWithWrappedException(h2, ex);
2216 +        checkCompletedWithWrappedException(h3, ex);
2217 +        g.complete(v1);
2218 +
2219 +        // unspecified behavior - both source completions available
2220 +        final CompletableFuture<Integer> h4 = m.applyToEither(f, g, rs[4]);
2221 +        final CompletableFuture<Integer> h5 = m.applyToEither(g, f, rs[5]);
2222 +        try {
2223 +            assertEquals(inc(v1), h4.join());
2224 +            rs[4].assertValue(inc(v1));
2225 +        } catch (CompletionException ok) {
2226 +            checkCompletedWithWrappedException(h4, ex);
2227 +            rs[4].assertNotInvoked();
2228 +        }
2229 +        try {
2230 +            assertEquals(inc(v1), h5.join());
2231 +            rs[5].assertValue(inc(v1));
2232 +        } catch (CompletionException ok) {
2233 +            checkCompletedWithWrappedException(h5, ex);
2234 +            rs[5].assertNotInvoked();
2235 +        }
2236 +
2237 +        checkCompletedExceptionally(f, ex);
2238 +        checkCompletedNormally(g, v1);
2239 +        checkCompletedWithWrappedException(h0, ex);
2240 +        checkCompletedWithWrappedException(h1, ex);
2241 +        checkCompletedWithWrappedException(h2, ex);
2242 +        checkCompletedWithWrappedException(h3, ex);
2243 +        checkCompletedWithWrappedException(h4, ex);
2244 +        for (int i = 0; i < 4; i++) rs[i].assertNotInvoked();
2245 +    }}
2246 +
2247 +    public void testApplyToEither_exceptionalCompletion2() {
2248 +        for (ExecutionMode m : ExecutionMode.values())
2249 +        for (boolean fFirst : new boolean[] { true, false })
2250 +        for (Integer v1 : new Integer[] { 1, null })
2251 +    {
2252 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2253 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2254 +        final CFException ex = new CFException();
2255 +        final IncFunction[] rs = new IncFunction[6];
2256 +        for (int i = 0; i < rs.length; i++) rs[i] = new IncFunction(m);
2257 +
2258 +        final CompletableFuture<Integer> h0 = m.applyToEither(f, g, rs[0]);
2259 +        final CompletableFuture<Integer> h1 = m.applyToEither(g, f, rs[1]);
2260 +        assertTrue(fFirst ? f.complete(v1) : g.completeExceptionally(ex));
2261 +        assertTrue(!fFirst ? f.complete(v1) : g.completeExceptionally(ex));
2262 +        final CompletableFuture<Integer> h2 = m.applyToEither(f, g, rs[2]);
2263 +        final CompletableFuture<Integer> h3 = m.applyToEither(g, f, rs[3]);
2264 +
2265 +        // unspecified behavior - both source completions available
2266 +        try {
2267 +            assertEquals(inc(v1), h0.join());
2268 +            rs[0].assertValue(inc(v1));
2269 +        } catch (CompletionException ok) {
2270 +            checkCompletedWithWrappedException(h0, ex);
2271 +            rs[0].assertNotInvoked();
2272 +        }
2273 +        try {
2274 +            assertEquals(inc(v1), h1.join());
2275 +            rs[1].assertValue(inc(v1));
2276 +        } catch (CompletionException ok) {
2277 +            checkCompletedWithWrappedException(h1, ex);
2278 +            rs[1].assertNotInvoked();
2279 +        }
2280 +        try {
2281 +            assertEquals(inc(v1), h2.join());
2282 +            rs[2].assertValue(inc(v1));
2283 +        } catch (CompletionException ok) {
2284 +            checkCompletedWithWrappedException(h2, ex);
2285 +            rs[2].assertNotInvoked();
2286 +        }
2287 +        try {
2288 +            assertEquals(inc(v1), h3.join());
2289 +            rs[3].assertValue(inc(v1));
2290 +        } catch (CompletionException ok) {
2291 +            checkCompletedWithWrappedException(h3, ex);
2292 +            rs[3].assertNotInvoked();
2293 +        }
2294 +
2295 +        checkCompletedNormally(f, v1);
2296 +        checkCompletedExceptionally(g, ex);
2297 +    }}
2298 +
2299 +    /**
2300 +     * applyToEither result completes exceptionally if either source cancelled
2301 +     */
2302 +    public void testApplyToEither_sourceCancelled() {
2303 +        for (ExecutionMode m : ExecutionMode.values())
2304 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2305 +        for (Integer v1 : new Integer[] { 1, null })
2306 +    {
2307 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2308 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2309 +        final IncFunction[] rs = new IncFunction[6];
2310 +        for (int i = 0; i < rs.length; i++) rs[i] = new IncFunction(m);
2311 +
2312 +        final CompletableFuture<Integer> h0 = m.applyToEither(f, g, rs[0]);
2313 +        final CompletableFuture<Integer> h1 = m.applyToEither(g, f, rs[1]);
2314 +        checkIncomplete(h0);
2315 +        checkIncomplete(h1);
2316 +        rs[0].assertNotInvoked();
2317 +        rs[1].assertNotInvoked();
2318 +        f.cancel(mayInterruptIfRunning);
2319 +        checkCompletedWithWrappedCancellationException(h0);
2320 +        checkCompletedWithWrappedCancellationException(h1);
2321 +        final CompletableFuture<Integer> h2 = m.applyToEither(f, g, rs[2]);
2322 +        final CompletableFuture<Integer> h3 = m.applyToEither(g, f, rs[3]);
2323 +        checkCompletedWithWrappedCancellationException(h2);
2324 +        checkCompletedWithWrappedCancellationException(h3);
2325 +        g.complete(v1);
2326 +
2327 +        // unspecified behavior - both source completions available
2328 +        final CompletableFuture<Integer> h4 = m.applyToEither(f, g, rs[4]);
2329 +        final CompletableFuture<Integer> h5 = m.applyToEither(g, f, rs[5]);
2330 +        try {
2331 +            assertEquals(inc(v1), h4.join());
2332 +            rs[4].assertValue(inc(v1));
2333 +        } catch (CompletionException ok) {
2334 +            checkCompletedWithWrappedCancellationException(h4);
2335 +            rs[4].assertNotInvoked();
2336 +        }
2337 +        try {
2338 +            assertEquals(inc(v1), h5.join());
2339 +            rs[5].assertValue(inc(v1));
2340 +        } catch (CompletionException ok) {
2341 +            checkCompletedWithWrappedCancellationException(h5);
2342 +            rs[5].assertNotInvoked();
2343 +        }
2344 +
2345 +        checkCancelled(f);
2346 +        checkCompletedNormally(g, v1);
2347 +        checkCompletedWithWrappedCancellationException(h0);
2348 +        checkCompletedWithWrappedCancellationException(h1);
2349 +        checkCompletedWithWrappedCancellationException(h2);
2350 +        checkCompletedWithWrappedCancellationException(h3);
2351 +        for (int i = 0; i < 4; i++) rs[i].assertNotInvoked();
2352 +    }}
2353 +
2354 +    public void testApplyToEither_sourceCancelled2() {
2355 +        for (ExecutionMode m : ExecutionMode.values())
2356 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2357 +        for (boolean fFirst : new boolean[] { true, false })
2358 +        for (Integer v1 : new Integer[] { 1, null })
2359 +    {
2360 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2361 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2362 +        final IncFunction[] rs = new IncFunction[6];
2363 +        for (int i = 0; i < rs.length; i++) rs[i] = new IncFunction(m);
2364 +
2365 +        final CompletableFuture<Integer> h0 = m.applyToEither(f, g, rs[0]);
2366 +        final CompletableFuture<Integer> h1 = m.applyToEither(g, f, rs[1]);
2367 +        assertTrue(fFirst ? f.complete(v1) : g.cancel(mayInterruptIfRunning));
2368 +        assertTrue(!fFirst ? f.complete(v1) : g.cancel(mayInterruptIfRunning));
2369 +        final CompletableFuture<Integer> h2 = m.applyToEither(f, g, rs[2]);
2370 +        final CompletableFuture<Integer> h3 = m.applyToEither(g, f, rs[3]);
2371 +
2372 +        // unspecified behavior - both source completions available
2373 +        try {
2374 +            assertEquals(inc(v1), h0.join());
2375 +            rs[0].assertValue(inc(v1));
2376 +        } catch (CompletionException ok) {
2377 +            checkCompletedWithWrappedCancellationException(h0);
2378 +            rs[0].assertNotInvoked();
2379 +        }
2380 +        try {
2381 +            assertEquals(inc(v1), h1.join());
2382 +            rs[1].assertValue(inc(v1));
2383 +        } catch (CompletionException ok) {
2384 +            checkCompletedWithWrappedCancellationException(h1);
2385 +            rs[1].assertNotInvoked();
2386 +        }
2387 +        try {
2388 +            assertEquals(inc(v1), h2.join());
2389 +            rs[2].assertValue(inc(v1));
2390 +        } catch (CompletionException ok) {
2391 +            checkCompletedWithWrappedCancellationException(h2);
2392 +            rs[2].assertNotInvoked();
2393 +        }
2394 +        try {
2395 +            assertEquals(inc(v1), h3.join());
2396 +            rs[3].assertValue(inc(v1));
2397 +        } catch (CompletionException ok) {
2398 +            checkCompletedWithWrappedCancellationException(h3);
2399 +            rs[3].assertNotInvoked();
2400 +        }
2401 +
2402 +        checkCompletedNormally(f, v1);
2403 +        checkCancelled(g);
2404 +    }}
2405 +
2406 +    /**
2407 +     * applyToEither result completes exceptionally if action does
2408 +     */
2409 +    public void testApplyToEither_actionFailed() {
2410 +        for (ExecutionMode m : ExecutionMode.values())
2411 +        for (Integer v1 : new Integer[] { 1, null })
2412 +        for (Integer v2 : new Integer[] { 2, null })
2413 +    {
2414 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2415 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2416 +        final FailingFunction[] rs = new FailingFunction[6];
2417 +        for (int i = 0; i < rs.length; i++) rs[i] = new FailingFunction(m);
2418 +
2419 +        final CompletableFuture<Integer> h0 = m.applyToEither(f, g, rs[0]);
2420 +        final CompletableFuture<Integer> h1 = m.applyToEither(g, f, rs[1]);
2421 +        f.complete(v1);
2422 +        final CompletableFuture<Integer> h2 = m.applyToEither(f, g, rs[2]);
2423 +        final CompletableFuture<Integer> h3 = m.applyToEither(g, f, rs[3]);
2424 +        checkCompletedWithWrappedCFException(h0);
2425 +        checkCompletedWithWrappedCFException(h1);
2426 +        checkCompletedWithWrappedCFException(h2);
2427 +        checkCompletedWithWrappedCFException(h3);
2428 +        for (int i = 0; i < 4; i++) rs[i].assertValue(v1);
2429 +
2430 +        g.complete(v2);
2431 +
2432 +        // unspecified behavior - both source completions available
2433 +        final CompletableFuture<Integer> h4 = m.applyToEither(f, g, rs[4]);
2434 +        final CompletableFuture<Integer> h5 = m.applyToEither(g, f, rs[5]);
2435 +
2436 +        checkCompletedWithWrappedCFException(h4);
2437 +        assertTrue(Objects.equals(v1, rs[4].value) ||
2438 +                   Objects.equals(v2, rs[4].value));
2439 +        checkCompletedWithWrappedCFException(h5);
2440 +        assertTrue(Objects.equals(v1, rs[5].value) ||
2441 +                   Objects.equals(v2, rs[5].value));
2442 +
2443 +        checkCompletedNormally(f, v1);
2444 +        checkCompletedNormally(g, v2);
2445 +    }}
2446 +
2447 +    /**
2448 +     * acceptEither result completes normally after normal completion
2449 +     * of either source
2450 +     */
2451 +    public void testAcceptEither_normalCompletion() {
2452 +        for (ExecutionMode m : ExecutionMode.values())
2453 +        for (Integer v1 : new Integer[] { 1, null })
2454 +        for (Integer v2 : new Integer[] { 2, null })
2455 +    {
2456 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2457 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2458 +        final NoopConsumer[] rs = new NoopConsumer[6];
2459 +        for (int i = 0; i < rs.length; i++) rs[i] = new NoopConsumer(m);
2460 +
2461 +        final CompletableFuture<Void> h0 = m.acceptEither(f, g, rs[0]);
2462 +        final CompletableFuture<Void> h1 = m.acceptEither(g, f, rs[1]);
2463 +        checkIncomplete(h0);
2464 +        checkIncomplete(h1);
2465 +        rs[0].assertNotInvoked();
2466 +        rs[1].assertNotInvoked();
2467 +        f.complete(v1);
2468 +        checkCompletedNormally(h0, null);
2469 +        checkCompletedNormally(h1, null);
2470 +        rs[0].assertValue(v1);
2471 +        rs[1].assertValue(v1);
2472 +        final CompletableFuture<Void> h2 = m.acceptEither(f, g, rs[2]);
2473 +        final CompletableFuture<Void> h3 = m.acceptEither(g, f, rs[3]);
2474 +        checkCompletedNormally(h2, null);
2475 +        checkCompletedNormally(h3, null);
2476 +        rs[2].assertValue(v1);
2477 +        rs[3].assertValue(v1);
2478 +        g.complete(v2);
2479 +
2480 +        // unspecified behavior - both source completions available
2481 +        final CompletableFuture<Void> h4 = m.acceptEither(f, g, rs[4]);
2482 +        final CompletableFuture<Void> h5 = m.acceptEither(g, f, rs[5]);
2483 +        checkCompletedNormally(h4, null);
2484 +        checkCompletedNormally(h5, null);
2485 +        assertTrue(Objects.equals(v1, rs[4].value) ||
2486 +                   Objects.equals(v2, rs[4].value));
2487 +        assertTrue(Objects.equals(v1, rs[5].value) ||
2488 +                   Objects.equals(v2, rs[5].value));
2489 +
2490 +        checkCompletedNormally(f, v1);
2491 +        checkCompletedNormally(g, v2);
2492 +        checkCompletedNormally(h0, null);
2493 +        checkCompletedNormally(h1, null);
2494 +        checkCompletedNormally(h2, null);
2495 +        checkCompletedNormally(h3, null);
2496 +        for (int i = 0; i < 4; i++) rs[i].assertValue(v1);
2497 +    }}
2498 +
2499 +    /**
2500 +     * acceptEither result completes exceptionally after exceptional
2501 +     * completion of either source
2502 +     */
2503 +    public void testAcceptEither_exceptionalCompletion() {
2504 +        for (ExecutionMode m : ExecutionMode.values())
2505 +        for (Integer v1 : new Integer[] { 1, null })
2506 +    {
2507 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2508 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2509 +        final CFException ex = new CFException();
2510 +        final NoopConsumer[] rs = new NoopConsumer[6];
2511 +        for (int i = 0; i < rs.length; i++) rs[i] = new NoopConsumer(m);
2512 +
2513 +        final CompletableFuture<Void> h0 = m.acceptEither(f, g, rs[0]);
2514 +        final CompletableFuture<Void> h1 = m.acceptEither(g, f, rs[1]);
2515 +        checkIncomplete(h0);
2516 +        checkIncomplete(h1);
2517 +        rs[0].assertNotInvoked();
2518 +        rs[1].assertNotInvoked();
2519 +        f.completeExceptionally(ex);
2520 +        checkCompletedWithWrappedException(h0, ex);
2521 +        checkCompletedWithWrappedException(h1, ex);
2522 +        final CompletableFuture<Void> h2 = m.acceptEither(f, g, rs[2]);
2523 +        final CompletableFuture<Void> h3 = m.acceptEither(g, f, rs[3]);
2524 +        checkCompletedWithWrappedException(h2, ex);
2525 +        checkCompletedWithWrappedException(h3, ex);
2526 +
2527 +        g.complete(v1);
2528 +
2529 +        // unspecified behavior - both source completions available
2530 +        final CompletableFuture<Void> h4 = m.acceptEither(f, g, rs[4]);
2531 +        final CompletableFuture<Void> h5 = m.acceptEither(g, f, rs[5]);
2532 +        try {
2533 +            assertNull(h4.join());
2534 +            rs[4].assertValue(v1);
2535 +        } catch (CompletionException ok) {
2536 +            checkCompletedWithWrappedException(h4, ex);
2537 +            rs[4].assertNotInvoked();
2538 +        }
2539 +        try {
2540 +            assertNull(h5.join());
2541 +            rs[5].assertValue(v1);
2542 +        } catch (CompletionException ok) {
2543 +            checkCompletedWithWrappedException(h5, ex);
2544 +            rs[5].assertNotInvoked();
2545 +        }
2546 +
2547 +        checkCompletedExceptionally(f, ex);
2548 +        checkCompletedNormally(g, v1);
2549 +        checkCompletedWithWrappedException(h0, ex);
2550 +        checkCompletedWithWrappedException(h1, ex);
2551 +        checkCompletedWithWrappedException(h2, ex);
2552 +        checkCompletedWithWrappedException(h3, ex);
2553 +        checkCompletedWithWrappedException(h4, ex);
2554 +        for (int i = 0; i < 4; i++) rs[i].assertNotInvoked();
2555 +    }}
2556 +
2557 +    public void testAcceptEither_exceptionalCompletion2() {
2558 +        for (ExecutionMode m : ExecutionMode.values())
2559 +        for (boolean fFirst : new boolean[] { true, false })
2560 +        for (Integer v1 : new Integer[] { 1, null })
2561 +    {
2562 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2563 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2564 +        final CFException ex = new CFException();
2565 +        final NoopConsumer[] rs = new NoopConsumer[6];
2566 +        for (int i = 0; i < rs.length; i++) rs[i] = new NoopConsumer(m);
2567 +
2568 +        final CompletableFuture<Void> h0 = m.acceptEither(f, g, rs[0]);
2569 +        final CompletableFuture<Void> h1 = m.acceptEither(g, f, rs[1]);
2570 +        assertTrue(fFirst ? f.complete(v1) : g.completeExceptionally(ex));
2571 +        assertTrue(!fFirst ? f.complete(v1) : g.completeExceptionally(ex));
2572 +        final CompletableFuture<Void> h2 = m.acceptEither(f, g, rs[2]);
2573 +        final CompletableFuture<Void> h3 = m.acceptEither(g, f, rs[3]);
2574 +
2575 +        // unspecified behavior - both source completions available
2576 +        try {
2577 +            assertEquals(null, h0.join());
2578 +            rs[0].assertValue(v1);
2579 +        } catch (CompletionException ok) {
2580 +            checkCompletedWithWrappedException(h0, ex);
2581 +            rs[0].assertNotInvoked();
2582 +        }
2583 +        try {
2584 +            assertEquals(null, h1.join());
2585 +            rs[1].assertValue(v1);
2586 +        } catch (CompletionException ok) {
2587 +            checkCompletedWithWrappedException(h1, ex);
2588 +            rs[1].assertNotInvoked();
2589 +        }
2590 +        try {
2591 +            assertEquals(null, h2.join());
2592 +            rs[2].assertValue(v1);
2593 +        } catch (CompletionException ok) {
2594 +            checkCompletedWithWrappedException(h2, ex);
2595 +            rs[2].assertNotInvoked();
2596 +        }
2597 +        try {
2598 +            assertEquals(null, h3.join());
2599 +            rs[3].assertValue(v1);
2600 +        } catch (CompletionException ok) {
2601 +            checkCompletedWithWrappedException(h3, ex);
2602 +            rs[3].assertNotInvoked();
2603 +        }
2604 +
2605 +        checkCompletedNormally(f, v1);
2606 +        checkCompletedExceptionally(g, ex);
2607 +    }}
2608 +
2609 +    /**
2610 +     * acceptEither result completes exceptionally if either source cancelled
2611 +     */
2612 +    public void testAcceptEither_sourceCancelled() {
2613 +        for (ExecutionMode m : ExecutionMode.values())
2614 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2615 +        for (Integer v1 : new Integer[] { 1, null })
2616 +    {
2617 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2618 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2619 +        final NoopConsumer[] rs = new NoopConsumer[6];
2620 +        for (int i = 0; i < rs.length; i++) rs[i] = new NoopConsumer(m);
2621 +
2622 +        final CompletableFuture<Void> h0 = m.acceptEither(f, g, rs[0]);
2623 +        final CompletableFuture<Void> h1 = m.acceptEither(g, f, rs[1]);
2624 +        checkIncomplete(h0);
2625 +        checkIncomplete(h1);
2626 +        rs[0].assertNotInvoked();
2627 +        rs[1].assertNotInvoked();
2628 +        f.cancel(mayInterruptIfRunning);
2629 +        checkCompletedWithWrappedCancellationException(h0);
2630 +        checkCompletedWithWrappedCancellationException(h1);
2631 +        final CompletableFuture<Void> h2 = m.acceptEither(f, g, rs[2]);
2632 +        final CompletableFuture<Void> h3 = m.acceptEither(g, f, rs[3]);
2633 +        checkCompletedWithWrappedCancellationException(h2);
2634 +        checkCompletedWithWrappedCancellationException(h3);
2635 +
2636 +        g.complete(v1);
2637 +
2638 +        // unspecified behavior - both source completions available
2639 +        final CompletableFuture<Void> h4 = m.acceptEither(f, g, rs[4]);
2640 +        final CompletableFuture<Void> h5 = m.acceptEither(g, f, rs[5]);
2641 +        try {
2642 +            assertNull(h4.join());
2643 +            rs[4].assertValue(v1);
2644 +        } catch (CompletionException ok) {
2645 +            checkCompletedWithWrappedCancellationException(h4);
2646 +            rs[4].assertNotInvoked();
2647 +        }
2648 +        try {
2649 +            assertNull(h5.join());
2650 +            rs[5].assertValue(v1);
2651 +        } catch (CompletionException ok) {
2652 +            checkCompletedWithWrappedCancellationException(h5);
2653 +            rs[5].assertNotInvoked();
2654 +        }
2655 +
2656 +        checkCancelled(f);
2657 +        checkCompletedNormally(g, v1);
2658 +        checkCompletedWithWrappedCancellationException(h0);
2659 +        checkCompletedWithWrappedCancellationException(h1);
2660 +        checkCompletedWithWrappedCancellationException(h2);
2661 +        checkCompletedWithWrappedCancellationException(h3);
2662 +        for (int i = 0; i < 4; i++) rs[i].assertNotInvoked();
2663 +    }}
2664 +
2665 +    /**
2666 +     * acceptEither result completes exceptionally if action does
2667 +     */
2668 +    public void testAcceptEither_actionFailed() {
2669 +        for (ExecutionMode m : ExecutionMode.values())
2670 +        for (Integer v1 : new Integer[] { 1, null })
2671 +        for (Integer v2 : new Integer[] { 2, null })
2672 +    {
2673 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2674 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2675 +        final FailingConsumer[] rs = new FailingConsumer[6];
2676 +        for (int i = 0; i < rs.length; i++) rs[i] = new FailingConsumer(m);
2677 +
2678 +        final CompletableFuture<Void> h0 = m.acceptEither(f, g, rs[0]);
2679 +        final CompletableFuture<Void> h1 = m.acceptEither(g, f, rs[1]);
2680 +        f.complete(v1);
2681 +        final CompletableFuture<Void> h2 = m.acceptEither(f, g, rs[2]);
2682 +        final CompletableFuture<Void> h3 = m.acceptEither(g, f, rs[3]);
2683 +        checkCompletedWithWrappedCFException(h0);
2684 +        checkCompletedWithWrappedCFException(h1);
2685 +        checkCompletedWithWrappedCFException(h2);
2686 +        checkCompletedWithWrappedCFException(h3);
2687 +        for (int i = 0; i < 4; i++) rs[i].assertValue(v1);
2688 +
2689 +        g.complete(v2);
2690 +
2691 +        // unspecified behavior - both source completions available
2692 +        final CompletableFuture<Void> h4 = m.acceptEither(f, g, rs[4]);
2693 +        final CompletableFuture<Void> h5 = m.acceptEither(g, f, rs[5]);
2694 +
2695 +        checkCompletedWithWrappedCFException(h4);
2696 +        assertTrue(Objects.equals(v1, rs[4].value) ||
2697 +                   Objects.equals(v2, rs[4].value));
2698 +        checkCompletedWithWrappedCFException(h5);
2699 +        assertTrue(Objects.equals(v1, rs[5].value) ||
2700 +                   Objects.equals(v2, rs[5].value));
2701 +
2702 +        checkCompletedNormally(f, v1);
2703 +        checkCompletedNormally(g, v2);
2704 +    }}
2705 +
2706 +    /**
2707 +     * runAfterEither result completes normally after normal completion
2708 +     * of either source
2709 +     */
2710 +    public void testRunAfterEither_normalCompletion() {
2711 +        for (ExecutionMode m : ExecutionMode.values())
2712 +        for (Integer v1 : new Integer[] { 1, null })
2713 +        for (Integer v2 : new Integer[] { 2, null })
2714 +    {
2715 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2716 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2717 +        final Noop[] rs = new Noop[6];
2718 +        for (int i = 0; i < rs.length; i++) rs[i] = new Noop(m);
2719 +
2720 +        final CompletableFuture<Void> h0 = m.runAfterEither(f, g, rs[0]);
2721 +        final CompletableFuture<Void> h1 = m.runAfterEither(g, f, rs[1]);
2722 +        checkIncomplete(h0);
2723 +        checkIncomplete(h1);
2724 +        rs[0].assertNotInvoked();
2725 +        rs[1].assertNotInvoked();
2726 +        f.complete(v1);
2727 +        checkCompletedNormally(h0, null);
2728 +        checkCompletedNormally(h1, null);
2729 +        rs[0].assertInvoked();
2730 +        rs[1].assertInvoked();
2731 +        final CompletableFuture<Void> h2 = m.runAfterEither(f, g, rs[2]);
2732 +        final CompletableFuture<Void> h3 = m.runAfterEither(g, f, rs[3]);
2733 +        checkCompletedNormally(h2, null);
2734 +        checkCompletedNormally(h3, null);
2735 +        rs[2].assertInvoked();
2736 +        rs[3].assertInvoked();
2737 +
2738 +        g.complete(v2);
2739 +
2740 +        final CompletableFuture<Void> h4 = m.runAfterEither(f, g, rs[4]);
2741 +        final CompletableFuture<Void> h5 = m.runAfterEither(g, f, rs[5]);
2742 +
2743 +        checkCompletedNormally(f, v1);
2744 +        checkCompletedNormally(g, v2);
2745 +        checkCompletedNormally(h0, null);
2746 +        checkCompletedNormally(h1, null);
2747 +        checkCompletedNormally(h2, null);
2748 +        checkCompletedNormally(h3, null);
2749 +        checkCompletedNormally(h4, null);
2750 +        checkCompletedNormally(h5, null);
2751 +        for (int i = 0; i < 6; i++) rs[i].assertInvoked();
2752 +    }}
2753 +
2754 +    /**
2755 +     * runAfterEither result completes exceptionally after exceptional
2756 +     * completion of either source
2757 +     */
2758 +    public void testRunAfterEither_exceptionalCompletion() {
2759 +        for (ExecutionMode m : ExecutionMode.values())
2760 +        for (Integer v1 : new Integer[] { 1, null })
2761 +    {
2762 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2763 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2764 +        final CFException ex = new CFException();
2765 +        final Noop[] rs = new Noop[6];
2766 +        for (int i = 0; i < rs.length; i++) rs[i] = new Noop(m);
2767 +
2768 +        final CompletableFuture<Void> h0 = m.runAfterEither(f, g, rs[0]);
2769 +        final CompletableFuture<Void> h1 = m.runAfterEither(g, f, rs[1]);
2770 +        checkIncomplete(h0);
2771 +        checkIncomplete(h1);
2772 +        rs[0].assertNotInvoked();
2773 +        rs[1].assertNotInvoked();
2774 +        assertTrue(f.completeExceptionally(ex));
2775 +        checkCompletedWithWrappedException(h0, ex);
2776 +        checkCompletedWithWrappedException(h1, ex);
2777 +        final CompletableFuture<Void> h2 = m.runAfterEither(f, g, rs[2]);
2778 +        final CompletableFuture<Void> h3 = m.runAfterEither(g, f, rs[3]);
2779 +        checkCompletedWithWrappedException(h2, ex);
2780 +        checkCompletedWithWrappedException(h3, ex);
2781 +
2782 +        assertTrue(g.complete(v1));
2783 +
2784 +        // unspecified behavior - both source completions available
2785 +        final CompletableFuture<Void> h4 = m.runAfterEither(f, g, rs[4]);
2786 +        final CompletableFuture<Void> h5 = m.runAfterEither(g, f, rs[5]);
2787 +        try {
2788 +            assertNull(h4.join());
2789 +            rs[4].assertInvoked();
2790 +        } catch (CompletionException ok) {
2791 +            checkCompletedWithWrappedException(h4, ex);
2792 +            rs[4].assertNotInvoked();
2793 +        }
2794 +        try {
2795 +            assertNull(h5.join());
2796 +            rs[5].assertInvoked();
2797 +        } catch (CompletionException ok) {
2798 +            checkCompletedWithWrappedException(h5, ex);
2799 +            rs[5].assertNotInvoked();
2800 +        }
2801 +
2802 +        checkCompletedExceptionally(f, ex);
2803 +        checkCompletedNormally(g, v1);
2804 +        checkCompletedWithWrappedException(h0, ex);
2805 +        checkCompletedWithWrappedException(h1, ex);
2806 +        checkCompletedWithWrappedException(h2, ex);
2807 +        checkCompletedWithWrappedException(h3, ex);
2808 +        checkCompletedWithWrappedException(h4, ex);
2809 +        for (int i = 0; i < 4; i++) rs[i].assertNotInvoked();
2810 +    }}
2811 +
2812 +    public void testRunAfterEither_exceptionalCompletion2() {
2813 +        for (ExecutionMode m : ExecutionMode.values())
2814 +        for (boolean fFirst : new boolean[] { true, false })
2815 +        for (Integer v1 : new Integer[] { 1, null })
2816 +    {
2817 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2818 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2819 +        final CFException ex = new CFException();
2820 +        final Noop[] rs = new Noop[6];
2821 +        for (int i = 0; i < rs.length; i++) rs[i] = new Noop(m);
2822 +
2823 +        final CompletableFuture<Void> h0 = m.runAfterEither(f, g, rs[0]);
2824 +        final CompletableFuture<Void> h1 = m.runAfterEither(g, f, rs[1]);
2825 +        assertTrue( fFirst ? f.complete(v1) : g.completeExceptionally(ex));
2826 +        assertTrue(!fFirst ? f.complete(v1) : g.completeExceptionally(ex));
2827 +        final CompletableFuture<Void> h2 = m.runAfterEither(f, g, rs[2]);
2828 +        final CompletableFuture<Void> h3 = m.runAfterEither(g, f, rs[3]);
2829 +
2830 +        // unspecified behavior - both source completions available
2831 +        try {
2832 +            assertEquals(null, h0.join());
2833 +            rs[0].assertInvoked();
2834 +        } catch (CompletionException ok) {
2835 +            checkCompletedWithWrappedException(h0, ex);
2836 +            rs[0].assertNotInvoked();
2837 +        }
2838 +        try {
2839 +            assertEquals(null, h1.join());
2840 +            rs[1].assertInvoked();
2841 +        } catch (CompletionException ok) {
2842 +            checkCompletedWithWrappedException(h1, ex);
2843 +            rs[1].assertNotInvoked();
2844 +        }
2845 +        try {
2846 +            assertEquals(null, h2.join());
2847 +            rs[2].assertInvoked();
2848 +        } catch (CompletionException ok) {
2849 +            checkCompletedWithWrappedException(h2, ex);
2850 +            rs[2].assertNotInvoked();
2851 +        }
2852 +        try {
2853 +            assertEquals(null, h3.join());
2854 +            rs[3].assertInvoked();
2855 +        } catch (CompletionException ok) {
2856 +            checkCompletedWithWrappedException(h3, ex);
2857 +            rs[3].assertNotInvoked();
2858 +        }
2859 +
2860 +        checkCompletedNormally(f, v1);
2861 +        checkCompletedExceptionally(g, ex);
2862 +    }}
2863 +
2864 +    /**
2865 +     * runAfterEither result completes exceptionally if either source cancelled
2866 +     */
2867 +    public void testRunAfterEither_sourceCancelled() {
2868 +        for (ExecutionMode m : ExecutionMode.values())
2869 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2870 +        for (Integer v1 : new Integer[] { 1, null })
2871 +    {
2872 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2873 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2874 +        final Noop[] rs = new Noop[6];
2875 +        for (int i = 0; i < rs.length; i++) rs[i] = new Noop(m);
2876 +
2877 +        final CompletableFuture<Void> h0 = m.runAfterEither(f, g, rs[0]);
2878 +        final CompletableFuture<Void> h1 = m.runAfterEither(g, f, rs[1]);
2879 +        checkIncomplete(h0);
2880 +        checkIncomplete(h1);
2881 +        rs[0].assertNotInvoked();
2882 +        rs[1].assertNotInvoked();
2883 +        f.cancel(mayInterruptIfRunning);
2884 +        checkCompletedWithWrappedCancellationException(h0);
2885 +        checkCompletedWithWrappedCancellationException(h1);
2886 +        final CompletableFuture<Void> h2 = m.runAfterEither(f, g, rs[2]);
2887 +        final CompletableFuture<Void> h3 = m.runAfterEither(g, f, rs[3]);
2888 +        checkCompletedWithWrappedCancellationException(h2);
2889 +        checkCompletedWithWrappedCancellationException(h3);
2890 +
2891 +        assertTrue(g.complete(v1));
2892 +
2893 +        // unspecified behavior - both source completions available
2894 +        final CompletableFuture<Void> h4 = m.runAfterEither(f, g, rs[4]);
2895 +        final CompletableFuture<Void> h5 = m.runAfterEither(g, f, rs[5]);
2896 +        try {
2897 +            assertNull(h4.join());
2898 +            rs[4].assertInvoked();
2899 +        } catch (CompletionException ok) {
2900 +            checkCompletedWithWrappedCancellationException(h4);
2901 +            rs[4].assertNotInvoked();
2902 +        }
2903 +        try {
2904 +            assertNull(h5.join());
2905 +            rs[5].assertInvoked();
2906 +        } catch (CompletionException ok) {
2907 +            checkCompletedWithWrappedCancellationException(h5);
2908 +            rs[5].assertNotInvoked();
2909 +        }
2910 +
2911 +        checkCancelled(f);
2912 +        checkCompletedNormally(g, v1);
2913 +        checkCompletedWithWrappedCancellationException(h0);
2914 +        checkCompletedWithWrappedCancellationException(h1);
2915 +        checkCompletedWithWrappedCancellationException(h2);
2916 +        checkCompletedWithWrappedCancellationException(h3);
2917 +        for (int i = 0; i < 4; i++) rs[i].assertNotInvoked();
2918 +    }}
2919 +
2920 +    /**
2921 +     * runAfterEither result completes exceptionally if action does
2922 +     */
2923 +    public void testRunAfterEither_actionFailed() {
2924 +        for (ExecutionMode m : ExecutionMode.values())
2925 +        for (Integer v1 : new Integer[] { 1, null })
2926 +        for (Integer v2 : new Integer[] { 2, null })
2927 +    {
2928 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2929 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2930 +        final FailingRunnable[] rs = new FailingRunnable[6];
2931 +        for (int i = 0; i < rs.length; i++) rs[i] = new FailingRunnable(m);
2932 +
2933 +        final CompletableFuture<Void> h0 = m.runAfterEither(f, g, rs[0]);
2934 +        final CompletableFuture<Void> h1 = m.runAfterEither(g, f, rs[1]);
2935 +        assertTrue(f.complete(v1));
2936 +        final CompletableFuture<Void> h2 = m.runAfterEither(f, g, rs[2]);
2937 +        final CompletableFuture<Void> h3 = m.runAfterEither(g, f, rs[3]);
2938 +        checkCompletedWithWrappedCFException(h0);
2939 +        checkCompletedWithWrappedCFException(h1);
2940 +        checkCompletedWithWrappedCFException(h2);
2941 +        checkCompletedWithWrappedCFException(h3);
2942 +        for (int i = 0; i < 4; i++) rs[i].assertInvoked();
2943 +        assertTrue(g.complete(v2));
2944 +        final CompletableFuture<Void> h4 = m.runAfterEither(f, g, rs[4]);
2945 +        final CompletableFuture<Void> h5 = m.runAfterEither(g, f, rs[5]);
2946 +        checkCompletedWithWrappedCFException(h4);
2947 +        checkCompletedWithWrappedCFException(h5);
2948 +
2949 +        checkCompletedNormally(f, v1);
2950 +        checkCompletedNormally(g, v2);
2951 +        for (int i = 0; i < 6; i++) rs[i].assertInvoked();
2952 +    }}
2953 +
2954 +    /**
2955 +     * thenCompose result completes normally after normal completion of source
2956 +     */
2957 +    public void testThenCompose_normalCompletion() {
2958 +        for (ExecutionMode m : ExecutionMode.values())
2959 +        for (boolean createIncomplete : new boolean[] { true, false })
2960 +        for (Integer v1 : new Integer[] { 1, null })
2961 +    {
2962 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2963 +        final CompletableFutureInc r = new CompletableFutureInc(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 +        checkCompletedNormally(g, inc(v1));
2969 +        checkCompletedNormally(f, v1);
2970 +        r.assertValue(v1);
2971 +    }}
2972 +
2973 +    /**
2974 +     * thenCompose result completes exceptionally after exceptional
2975 +     * completion of source
2976 +     */
2977 +    public void testThenCompose_exceptionalCompletion() {
2978 +        for (ExecutionMode m : ExecutionMode.values())
2979 +        for (boolean createIncomplete : new boolean[] { true, false })
2980 +    {
2981 +        final CFException ex = new CFException();
2982 +        final CompletableFutureInc r = new CompletableFutureInc(m);
2983 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2984 +        if (!createIncomplete) f.completeExceptionally(ex);
2985 +        final CompletableFuture<Integer> g = m.thenCompose(f, r);
2986 +        if (createIncomplete) f.completeExceptionally(ex);
2987 +
2988 +        checkCompletedWithWrappedException(g, ex);
2989 +        checkCompletedExceptionally(f, ex);
2990 +        r.assertNotInvoked();
2991 +    }}
2992 +
2993 +    /**
2994 +     * thenCompose result completes exceptionally if action does
2995 +     */
2996 +    public void testThenCompose_actionFailed() {
2997 +        for (ExecutionMode m : ExecutionMode.values())
2998 +        for (boolean createIncomplete : new boolean[] { true, false })
2999 +        for (Integer v1 : new Integer[] { 1, null })
3000 +    {
3001 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
3002 +        final FailingCompletableFutureFunction r
3003 +            = new FailingCompletableFutureFunction(m);
3004 +        if (!createIncomplete) assertTrue(f.complete(v1));
3005 +        final CompletableFuture<Integer> g = m.thenCompose(f, r);
3006 +        if (createIncomplete) assertTrue(f.complete(v1));
3007 +
3008 +        checkCompletedWithWrappedCFException(g);
3009 +        checkCompletedNormally(f, v1);
3010 +    }}
3011 +
3012 +    /**
3013 +     * thenCompose result completes exceptionally if source cancelled
3014 +     */
3015 +    public void testThenCompose_sourceCancelled() {
3016 +        for (ExecutionMode m : ExecutionMode.values())
3017 +        for (boolean createIncomplete : new boolean[] { true, false })
3018 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
3019 +    {
3020 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
3021 +        final CompletableFutureInc r = new CompletableFutureInc(m);
3022 +        if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
3023 +        final CompletableFuture<Integer> g = m.thenCompose(f, r);
3024 +        if (createIncomplete) {
3025 +            checkIncomplete(g);
3026 +            assertTrue(f.cancel(mayInterruptIfRunning));
3027 +        }
3028 +
3029 +        checkCompletedWithWrappedCancellationException(g);
3030 +        checkCancelled(f);
3031 +    }}
3032 +
3033 +    /**
3034 +     * thenCompose result completes exceptionally if the result of the action does
3035 +     */
3036 +    public void testThenCompose_actionReturnsFailingFuture() {
3037 +        for (ExecutionMode m : ExecutionMode.values())
3038 +        for (int order = 0; order < 6; order++)
3039 +        for (Integer v1 : new Integer[] { 1, null })
3040 +    {
3041 +        final CFException ex = new CFException();
3042 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
3043 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
3044 +        final CompletableFuture<Integer> h;
3045 +        // Test all permutations of orders
3046 +        switch (order) {
3047 +        case 0:
3048 +            assertTrue(f.complete(v1));
3049 +            assertTrue(g.completeExceptionally(ex));
3050 +            h = m.thenCompose(f, (x -> g));
3051 +            break;
3052 +        case 1:
3053 +            assertTrue(f.complete(v1));
3054 +            h = m.thenCompose(f, (x -> g));
3055 +            assertTrue(g.completeExceptionally(ex));
3056 +            break;
3057 +        case 2:
3058 +            assertTrue(g.completeExceptionally(ex));
3059 +            assertTrue(f.complete(v1));
3060 +            h = m.thenCompose(f, (x -> g));
3061 +            break;
3062 +        case 3:
3063 +            assertTrue(g.completeExceptionally(ex));
3064 +            h = m.thenCompose(f, (x -> g));
3065 +            assertTrue(f.complete(v1));
3066 +            break;
3067 +        case 4:
3068 +            h = m.thenCompose(f, (x -> g));
3069 +            assertTrue(f.complete(v1));
3070 +            assertTrue(g.completeExceptionally(ex));
3071 +            break;
3072 +        case 5:
3073 +            h = m.thenCompose(f, (x -> g));
3074 +            assertTrue(f.complete(v1));
3075 +            assertTrue(g.completeExceptionally(ex));
3076 +            break;
3077 +        default: throw new AssertionError();
3078 +        }
3079 +
3080 +        checkCompletedExceptionally(g, ex);
3081 +        checkCompletedWithWrappedException(h, ex);
3082 +        checkCompletedNormally(f, v1);
3083 +    }}
3084 +
3085 +    // other static methods
3086 +
3087 +    /**
3088 +     * allOf(no component futures) returns a future completed normally
3089 +     * with the value null
3090 +     */
3091 +    public void testAllOf_empty() throws Exception {
3092 +        CompletableFuture<Void> f = CompletableFuture.allOf();
3093 +        checkCompletedNormally(f, null);
3094 +    }
3095 +
3096 +    /**
3097 +     * allOf returns a future completed normally with the value null
3098 +     * when all components complete normally
3099 +     */
3100 +    public void testAllOf_normal() throws Exception {
3101 +        for (int k = 1; k < 10; k++) {
3102 +            CompletableFuture<Integer>[] fs
3103 +                = (CompletableFuture<Integer>[]) new CompletableFuture[k];
3104 +            for (int i = 0; i < k; i++)
3105 +                fs[i] = new CompletableFuture<>();
3106 +            CompletableFuture<Void> f = CompletableFuture.allOf(fs);
3107 +            for (int i = 0; i < k; i++) {
3108 +                checkIncomplete(f);
3109 +                checkIncomplete(CompletableFuture.allOf(fs));
3110 +                fs[i].complete(one);
3111 +            }
3112 +            checkCompletedNormally(f, null);
3113 +            checkCompletedNormally(CompletableFuture.allOf(fs), null);
3114 +        }
3115 +    }
3116 +
3117 +    public void testAllOf_backwards() throws Exception {
3118 +        for (int k = 1; k < 10; k++) {
3119 +            CompletableFuture<Integer>[] fs
3120 +                = (CompletableFuture<Integer>[]) new CompletableFuture[k];
3121 +            for (int i = 0; i < k; i++)
3122 +                fs[i] = new CompletableFuture<>();
3123 +            CompletableFuture<Void> f = CompletableFuture.allOf(fs);
3124 +            for (int i = k - 1; i >= 0; i--) {
3125 +                checkIncomplete(f);
3126 +                checkIncomplete(CompletableFuture.allOf(fs));
3127 +                fs[i].complete(one);
3128 +            }
3129 +            checkCompletedNormally(f, null);
3130 +            checkCompletedNormally(CompletableFuture.allOf(fs), null);
3131 +        }
3132 +    }
3133 +
3134 +    public void testAllOf_exceptional() throws Exception {
3135 +        for (int k = 1; k < 10; k++) {
3136 +            CompletableFuture<Integer>[] fs
3137 +                = (CompletableFuture<Integer>[]) new CompletableFuture[k];
3138 +            CFException ex = new CFException();
3139 +            for (int i = 0; i < k; i++)
3140 +                fs[i] = new CompletableFuture<>();
3141 +            CompletableFuture<Void> f = CompletableFuture.allOf(fs);
3142 +            for (int i = 0; i < k; i++) {
3143 +                checkIncomplete(f);
3144 +                checkIncomplete(CompletableFuture.allOf(fs));
3145 +                if (i != k/2) {
3146 +                    fs[i].complete(i);
3147 +                    checkCompletedNormally(fs[i], i);
3148 +                } else {
3149 +                    fs[i].completeExceptionally(ex);
3150 +                    checkCompletedExceptionally(fs[i], ex);
3151 +                }
3152 +            }
3153 +            checkCompletedWithWrappedException(f, ex);
3154 +            checkCompletedWithWrappedException(CompletableFuture.allOf(fs), ex);
3155 +        }
3156 +    }
3157 +
3158 +    /**
3159 +     * anyOf(no component futures) returns an incomplete future
3160 +     */
3161 +    public void testAnyOf_empty() throws Exception {
3162 +        for (Integer v1 : new Integer[] { 1, null })
3163 +    {
3164 +        CompletableFuture<Object> f = CompletableFuture.anyOf();
3165 +        checkIncomplete(f);
3166 +
3167 +        f.complete(v1);
3168 +        checkCompletedNormally(f, v1);
3169 +    }}
3170 +
3171 +    /**
3172 +     * anyOf returns a future completed normally with a value when
3173 +     * a component future does
3174 +     */
3175 +    public void testAnyOf_normal() throws Exception {
3176 +        for (int k = 0; k < 10; k++) {
3177 +            CompletableFuture[] fs = new CompletableFuture[k];
3178 +            for (int i = 0; i < k; i++)
3179 +                fs[i] = new CompletableFuture<>();
3180 +            CompletableFuture<Object> f = CompletableFuture.anyOf(fs);
3181 +            checkIncomplete(f);
3182 +            for (int i = 0; i < k; i++) {
3183 +                fs[i].complete(i);
3184 +                checkCompletedNormally(f, 0);
3185 +                int x = (int) CompletableFuture.anyOf(fs).join();
3186 +                assertTrue(0 <= x && x <= i);
3187 +            }
3188 +        }
3189 +    }
3190 +    public void testAnyOf_normal_backwards() throws Exception {
3191 +        for (int k = 0; k < 10; k++) {
3192 +            CompletableFuture[] fs = new CompletableFuture[k];
3193 +            for (int i = 0; i < k; i++)
3194 +                fs[i] = new CompletableFuture<>();
3195 +            CompletableFuture<Object> f = CompletableFuture.anyOf(fs);
3196 +            checkIncomplete(f);
3197 +            for (int i = k - 1; i >= 0; i--) {
3198 +                fs[i].complete(i);
3199 +                checkCompletedNormally(f, k - 1);
3200 +                int x = (int) CompletableFuture.anyOf(fs).join();
3201 +                assertTrue(i <= x && x <= k - 1);
3202 +            }
3203 +        }
3204 +    }
3205 +
3206 +    /**
3207 +     * anyOf result completes exceptionally when any component does.
3208 +     */
3209 +    public void testAnyOf_exceptional() throws Exception {
3210 +        for (int k = 0; k < 10; k++) {
3211 +            CompletableFuture[] fs = new CompletableFuture[k];
3212 +            CFException[] exs = new CFException[k];
3213 +            for (int i = 0; i < k; i++) {
3214 +                fs[i] = new CompletableFuture<>();
3215 +                exs[i] = new CFException();
3216 +            }
3217 +            CompletableFuture<Object> f = CompletableFuture.anyOf(fs);
3218 +            checkIncomplete(f);
3219 +            for (int i = 0; i < k; i++) {
3220 +                fs[i].completeExceptionally(exs[i]);
3221 +                checkCompletedWithWrappedException(f, exs[0]);
3222 +                checkCompletedWithWrappedCFException(CompletableFuture.anyOf(fs));
3223 +            }
3224 +        }
3225 +    }
3226 +
3227 +    public void testAnyOf_exceptional_backwards() throws Exception {
3228 +        for (int k = 0; k < 10; k++) {
3229 +            CompletableFuture[] fs = new CompletableFuture[k];
3230 +            CFException[] exs = new CFException[k];
3231 +            for (int i = 0; i < k; i++) {
3232 +                fs[i] = new CompletableFuture<>();
3233 +                exs[i] = new CFException();
3234 +            }
3235 +            CompletableFuture<Object> f = CompletableFuture.anyOf(fs);
3236 +            checkIncomplete(f);
3237 +            for (int i = k - 1; i >= 0; i--) {
3238 +                fs[i].completeExceptionally(exs[i]);
3239 +                checkCompletedWithWrappedException(f, exs[k - 1]);
3240 +                checkCompletedWithWrappedCFException(CompletableFuture.anyOf(fs));
3241 +            }
3242 +        }
3243 +    }
3244 +
3245 +    /**
3246 +     * Completion methods throw NullPointerException with null arguments
3247 +     */
3248 +    public void testNPE() {
3249 +        CompletableFuture<Integer> f = new CompletableFuture<>();
3250 +        CompletableFuture<Integer> g = new CompletableFuture<>();
3251 +        CompletableFuture<Integer> nullFuture = (CompletableFuture<Integer>)null;
3252 +        ThreadExecutor exec = new ThreadExecutor();
3253 +
3254 +        Runnable[] throwingActions = {
3255 +            () -> CompletableFuture.supplyAsync(null),
3256 +            () -> CompletableFuture.supplyAsync(null, exec),
3257 +            () -> CompletableFuture.supplyAsync(new IntegerSupplier(ExecutionMode.SYNC, 42), null),
3258 +
3259 +            () -> CompletableFuture.runAsync(null),
3260 +            () -> CompletableFuture.runAsync(null, exec),
3261 +            () -> CompletableFuture.runAsync(() -> {}, null),
3262 +
3263 +            () -> f.completeExceptionally(null),
3264 +
3265 +            () -> f.thenApply(null),
3266 +            () -> f.thenApplyAsync(null),
3267 +            () -> f.thenApplyAsync((x) -> x, null),
3268 +            () -> f.thenApplyAsync(null, exec),
3269 +
3270 +            () -> f.thenAccept(null),
3271 +            () -> f.thenAcceptAsync(null),
3272 +            () -> f.thenAcceptAsync((x) -> {} , null),
3273 +            () -> f.thenAcceptAsync(null, exec),
3274 +
3275 +            () -> f.thenRun(null),
3276 +            () -> f.thenRunAsync(null),
3277 +            () -> f.thenRunAsync(() -> {} , null),
3278 +            () -> f.thenRunAsync(null, exec),
3279 +
3280 +            () -> f.thenCombine(g, null),
3281 +            () -> f.thenCombineAsync(g, null),
3282 +            () -> f.thenCombineAsync(g, null, exec),
3283 +            () -> f.thenCombine(nullFuture, (x, y) -> x),
3284 +            () -> f.thenCombineAsync(nullFuture, (x, y) -> x),
3285 +            () -> f.thenCombineAsync(nullFuture, (x, y) -> x, exec),
3286 +            () -> f.thenCombineAsync(g, (x, y) -> x, null),
3287 +
3288 +            () -> f.thenAcceptBoth(g, null),
3289 +            () -> f.thenAcceptBothAsync(g, null),
3290 +            () -> f.thenAcceptBothAsync(g, null, exec),
3291 +            () -> f.thenAcceptBoth(nullFuture, (x, y) -> {}),
3292 +            () -> f.thenAcceptBothAsync(nullFuture, (x, y) -> {}),
3293 +            () -> f.thenAcceptBothAsync(nullFuture, (x, y) -> {}, exec),
3294 +            () -> f.thenAcceptBothAsync(g, (x, y) -> {}, null),
3295 +
3296 +            () -> f.runAfterBoth(g, null),
3297 +            () -> f.runAfterBothAsync(g, null),
3298 +            () -> f.runAfterBothAsync(g, null, exec),
3299 +            () -> f.runAfterBoth(nullFuture, () -> {}),
3300 +            () -> f.runAfterBothAsync(nullFuture, () -> {}),
3301 +            () -> f.runAfterBothAsync(nullFuture, () -> {}, exec),
3302 +            () -> f.runAfterBothAsync(g, () -> {}, null),
3303 +
3304 +            () -> f.applyToEither(g, null),
3305 +            () -> f.applyToEitherAsync(g, null),
3306 +            () -> f.applyToEitherAsync(g, null, exec),
3307 +            () -> f.applyToEither(nullFuture, (x) -> x),
3308 +            () -> f.applyToEitherAsync(nullFuture, (x) -> x),
3309 +            () -> f.applyToEitherAsync(nullFuture, (x) -> x, exec),
3310 +            () -> f.applyToEitherAsync(g, (x) -> x, null),
3311 +
3312 +            () -> f.acceptEither(g, null),
3313 +            () -> f.acceptEitherAsync(g, null),
3314 +            () -> f.acceptEitherAsync(g, null, exec),
3315 +            () -> f.acceptEither(nullFuture, (x) -> {}),
3316 +            () -> f.acceptEitherAsync(nullFuture, (x) -> {}),
3317 +            () -> f.acceptEitherAsync(nullFuture, (x) -> {}, exec),
3318 +            () -> f.acceptEitherAsync(g, (x) -> {}, null),
3319 +
3320 +            () -> f.runAfterEither(g, null),
3321 +            () -> f.runAfterEitherAsync(g, null),
3322 +            () -> f.runAfterEitherAsync(g, null, exec),
3323 +            () -> f.runAfterEither(nullFuture, () -> {}),
3324 +            () -> f.runAfterEitherAsync(nullFuture, () -> {}),
3325 +            () -> f.runAfterEitherAsync(nullFuture, () -> {}, exec),
3326 +            () -> f.runAfterEitherAsync(g, () -> {}, null),
3327 +
3328 +            () -> f.thenCompose(null),
3329 +            () -> f.thenComposeAsync(null),
3330 +            () -> f.thenComposeAsync(new CompletableFutureInc(ExecutionMode.EXECUTOR), null),
3331 +            () -> f.thenComposeAsync(null, exec),
3332 +
3333 +            () -> f.exceptionally(null),
3334 +
3335 +            () -> f.handle(null),
3336 +
3337 +            () -> CompletableFuture.allOf((CompletableFuture<?>)null),
3338 +            () -> CompletableFuture.allOf((CompletableFuture<?>[])null),
3339 +            () -> CompletableFuture.allOf(f, null),
3340 +            () -> CompletableFuture.allOf(null, f),
3341 +
3342 +            () -> CompletableFuture.anyOf((CompletableFuture<?>)null),
3343 +            () -> CompletableFuture.anyOf((CompletableFuture<?>[])null),
3344 +            () -> CompletableFuture.anyOf(f, null),
3345 +            () -> CompletableFuture.anyOf(null, f),
3346 +
3347 +            () -> f.obtrudeException(null),
3348 +        };
3349 +
3350 +        assertThrows(NullPointerException.class, throwingActions);
3351 +        assertEquals(0, exec.count.get());
3352 +    }
3353 +
3354 +    /**
3355 +     * toCompletableFuture returns this CompletableFuture.
3356 +     */
3357 +    public void testToCompletableFuture() {
3358 +        CompletableFuture<Integer> f = new CompletableFuture<>();
3359 +        assertSame(f, f.toCompletableFuture());
3360 +    }
3361 +
3362 +    // jdk9
3363 +
3364 +    /**
3365 +     * newIncompleteFuture returns an incomplete CompletableFuture
3366 +     */
3367 +    public void testNewIncompleteFuture() {
3368 +        CompletableFuture<Integer> f = new CompletableFuture<>();
3369 +        CompletableFuture<Integer> g = f.newIncompleteFuture();
3370 +        checkIncomplete(f);
3371 +        checkIncomplete(g);
3372 +    }
3373 +
3374 +    /**
3375 +     * completedStage returns a completed CompletionStage
3376 +     */
3377 +    public void testCompletedStage() {
3378 +        AtomicInteger x = new AtomicInteger();
3379 +        AtomicReference<Throwable> r = new AtomicReference<Throwable>();
3380 +        CompletionStage<Integer> f = CompletableFuture.completedStage(1);
3381 +        f.whenComplete((v, e) -> {if (e != null) r.set(e); else x.set(v);});
3382 +        assertEquals(x.get(), 1);
3383 +        assertNull(r.get());
3384 +    }
3385 +
3386 +    /**
3387 +     * defaultExecutor by default returns the commonPool if
3388 +     * it supports at least one thread.
3389 +     */
3390 +    public void testDefaultExecutor() {
3391 +        CompletableFuture<Integer> f = new CompletableFuture<>();
3392 +        Executor e = f.defaultExecutor();
3393 +        Executor c = ForkJoinPool.commonPool();
3394 +        if (ForkJoinPool.getCommonPoolParallelism() > 1)
3395 +            assertSame(e, c);
3396      }
3397 +
3398 +    /**
3399 +     * failedFuture returns a CompletableFuture completed
3400 +     * exceptionally with the given Exception
3401 +     */
3402 +    public void testFailedFuture() {
3403 +        CFException ex = new CFException();
3404 +        CompletableFuture<Integer> f = CompletableFuture.failedFuture(ex);
3405 +        checkCompletedExceptionallyWithRootCause(f, ex);
3406 +    }
3407 +
3408 +    /**
3409 +     * failedFuture(null) throws NPE
3410 +     */
3411 +    public void testFailedFuture2() {
3412 +        try {
3413 +            CompletableFuture<Integer> f = CompletableFuture.failedFuture(null);
3414 +            shouldThrow();
3415 +        } catch (NullPointerException success) {}
3416 +    }
3417 +
3418 +    /**
3419 +     * copy returns a CompletableFuture that is completed normally,
3420 +     * with the same value, when source is.
3421 +     */
3422 +    public void testCopy() {
3423 +        CompletableFuture<Integer> f = new CompletableFuture<>();
3424 +        CompletableFuture<Integer> g = f.copy();
3425 +        checkIncomplete(f);
3426 +        checkIncomplete(g);
3427 +        f.complete(1);
3428 +        checkCompletedNormally(f, 1);
3429 +        checkCompletedNormally(g, 1);
3430 +    }
3431 +
3432 +    /**
3433 +     * copy returns a CompletableFuture that is completed exceptionally
3434 +     * when source is.
3435 +     */
3436 +    public void testCopy2() {
3437 +        CompletableFuture<Integer> f = new CompletableFuture<>();
3438 +        CompletableFuture<Integer> g = f.copy();
3439 +        checkIncomplete(f);
3440 +        checkIncomplete(g);
3441 +        CFException ex = new CFException();
3442 +        f.completeExceptionally(ex);
3443 +        checkCompletedExceptionally(f, ex);
3444 +        checkCompletedWithWrappedCFException(g);
3445 +    }
3446 +
3447 +    /**
3448 +     * minimalCompletionStage returns a CompletableFuture that is
3449 +     * completed normally, with the same value, when source is.
3450 +     */
3451 +    public void testMinimalCompletionStage() {
3452 +        CompletableFuture<Integer> f = new CompletableFuture<>();
3453 +        CompletionStage<Integer> g = f.minimalCompletionStage();
3454 +        AtomicInteger x = new AtomicInteger();
3455 +        AtomicReference<Throwable> r = new AtomicReference<Throwable>();
3456 +        checkIncomplete(f);
3457 +        g.whenComplete((v, e) -> {if (e != null) r.set(e); else x.set(v);});
3458 +        f.complete(1);
3459 +        checkCompletedNormally(f, 1);
3460 +        assertEquals(x.get(), 1);
3461 +        assertNull(r.get());
3462 +    }
3463 +
3464 +    /**
3465 +     * minimalCompletionStage returns a CompletableFuture that is
3466 +     * completed exceptionally when source is.
3467 +     */
3468 +    public void testMinimalCompletionStage2() {
3469 +        CompletableFuture<Integer> f = new CompletableFuture<>();
3470 +        CompletionStage<Integer> g = f.minimalCompletionStage();
3471 +        AtomicInteger x = new AtomicInteger();
3472 +        AtomicReference<Throwable> r = new AtomicReference<Throwable>();
3473 +        g.whenComplete((v, e) -> {if (e != null) r.set(e); else x.set(v);});
3474 +        checkIncomplete(f);
3475 +        CFException ex = new CFException();
3476 +        f.completeExceptionally(ex);
3477 +        checkCompletedExceptionally(f, ex);
3478 +        assertEquals(x.get(), 0);
3479 +        assertEquals(r.get().getCause(), ex);
3480 +    }
3481 +
3482 +    /**
3483 +     * failedStage returns a CompletionStage completed
3484 +     * exceptionally with the given Exception
3485 +     */
3486 +    public void testFailedStage() {
3487 +        CFException ex = new CFException();
3488 +        CompletionStage<Integer> f = CompletableFuture.failedStage(ex);
3489 +        AtomicInteger x = new AtomicInteger();
3490 +        AtomicReference<Throwable> r = new AtomicReference<Throwable>();
3491 +        f.whenComplete((v, e) -> {if (e != null) r.set(e); else x.set(v);});
3492 +        assertEquals(x.get(), 0);
3493 +        assertEquals(r.get().getCause(), ex);
3494 +    }
3495 +
3496 +    /**
3497 +     * completeAsync completes with value of given supplier
3498 +     */
3499 +    public void testCompleteAsync() {
3500 +        CompletableFuture<Integer> f = new CompletableFuture<>();
3501 +        f.completeAsync(() -> 1);
3502 +        f.join();
3503 +        checkCompletedNormally(f, 1);
3504 +    }
3505 +
3506 +    /**
3507 +     * completeAsync completes exceptionally if given supplier throws
3508 +     */
3509 +    public void testCompleteAsync2() {
3510 +        CompletableFuture<Integer> f = new CompletableFuture<>();
3511 +        CFException ex = new CFException();
3512 +        f.completeAsync(() -> {if (true) throw ex; return 1;});
3513 +        try {
3514 +            f.join();
3515 +            shouldThrow();
3516 +        } catch (Exception success) {}
3517 +        checkCompletedWithWrappedCFException(f);
3518 +    }
3519 +
3520 +    /**
3521 +     * completeAsync with given executor completes with value of given supplier
3522 +     */
3523 +    public void testCompleteAsync3() {
3524 +        CompletableFuture<Integer> f = new CompletableFuture<>();
3525 +        f.completeAsync(() -> 1, new ThreadExecutor());
3526 +        f.join();
3527 +        checkCompletedNormally(f, 1);
3528 +    }
3529 +
3530 +    /**
3531 +     * completeAsync with given executor completes exceptionally if
3532 +     * given supplier throws
3533 +     */
3534 +    public void testCompleteAsync4() {
3535 +        CompletableFuture<Integer> f = new CompletableFuture<>();
3536 +        CFException ex = new CFException();
3537 +        f.completeAsync(() -> {if (true) throw ex; return 1;}, new ThreadExecutor());
3538 +        try {
3539 +            f.join();
3540 +            shouldThrow();
3541 +        } catch (Exception success) {}
3542 +        checkCompletedWithWrappedCFException(f);
3543 +    }
3544 +
3545 +    /**
3546 +     * orTimeout completes with TimeoutException if not complete
3547 +     */
3548 +    public void testOrTimeout() {
3549 +        CompletableFuture<Integer> f = new CompletableFuture<>();
3550 +        f.orTimeout(SHORT_DELAY_MS, TimeUnit.MILLISECONDS);
3551 +        checkCompletedExceptionallyWithTimeout(f);
3552 +    }
3553 +
3554 +    /**
3555 +     * orTimeout completes normally if completed before timeout
3556 +     */
3557 +    public void testOrTimeout2() {
3558 +        CompletableFuture<Integer> f = new CompletableFuture<>();
3559 +        f.complete(1);
3560 +        f.orTimeout(SHORT_DELAY_MS, TimeUnit.MILLISECONDS);
3561 +        checkCompletedNormally(f, 1);
3562 +    }
3563 +
3564 +    /**
3565 +     * completeOnTimeout completes with given value if not complete
3566 +     */
3567 +    public void testCompleteOnTimeout() {
3568 +        CompletableFuture<Integer> f = new CompletableFuture<>();
3569 +        f.completeOnTimeout(-1, SHORT_DELAY_MS, TimeUnit.MILLISECONDS);
3570 +        f.join();
3571 +        checkCompletedNormally(f, -1);
3572 +    }
3573 +
3574 +    /**
3575 +     * completeOnTimeout has no effect if completed within timeout
3576 +     */
3577 +    public void testCompleteOnTimeout2() {
3578 +        CompletableFuture<Integer> f = new CompletableFuture<>();
3579 +        f.complete(1);
3580 +        f.completeOnTimeout(-1, SHORT_DELAY_MS, TimeUnit.MILLISECONDS);
3581 +        checkCompletedNormally(f, 1);
3582 +    }
3583 +
3584 +    /**
3585 +     * delayedExecutor returns an executor that delays submission
3586 +     */
3587 +    public void testDelayedExecutor() {
3588 +        long timeoutMillis = SMALL_DELAY_MS;
3589 +        Executor d = CompletableFuture.delayedExecutor(timeoutMillis,
3590 +                                                       MILLISECONDS);
3591 +        long startTime = System.nanoTime();
3592 +        CompletableFuture<Integer> f = CompletableFuture.supplyAsync(() -> 1, d);
3593 +        assertNull(f.getNow(null));
3594 +        try {
3595 +            f.get(LONG_DELAY_MS, MILLISECONDS);
3596 +        } catch (Throwable fail) { threadUnexpectedException(fail); }
3597 +        assertTrue(millisElapsedSince(startTime) > timeoutMillis/2);
3598 +        checkCompletedNormally(f, 1);
3599 +    }
3600 +
3601 +    /**
3602 +     * delayedExecutor for a given executor returns an executor that
3603 +     * delays submission
3604 +     */
3605 +    public void testDelayedExecutor2() {
3606 +        long timeoutMillis = SMALL_DELAY_MS;
3607 +        Executor d = CompletableFuture.delayedExecutor(timeoutMillis,
3608 +                                                       MILLISECONDS,
3609 +                                                       new ThreadExecutor());
3610 +        long startTime = System.nanoTime();
3611 +        CompletableFuture<Integer> f = CompletableFuture.supplyAsync(() -> 1, d);
3612 +        assertNull(f.getNow(null));
3613 +        try {
3614 +            f.get(LONG_DELAY_MS, MILLISECONDS);
3615 +        } catch (Throwable fail) { threadUnexpectedException(fail); }
3616 +        assertTrue(millisElapsedSince(startTime) > timeoutMillis/2);
3617 +        checkCompletedNormally(f, 1);
3618 +    }
3619 +
3620 +    //--- tests of implementation details; not part of official tck ---
3621 +
3622 +    Object resultOf(CompletableFuture<?> f) {
3623 +        try {
3624 +            java.lang.reflect.Field resultField
3625 +                = CompletableFuture.class.getDeclaredField("result");
3626 +            resultField.setAccessible(true);
3627 +            return resultField.get(f);
3628 +        } catch (Throwable t) { throw new AssertionError(t); }
3629 +    }
3630 +
3631 +    public void testExceptionPropagationReusesResultObject() {
3632 +        if (!testImplementationDetails) return;
3633 +        for (ExecutionMode m : ExecutionMode.values())
3634 +    {
3635 +        final CFException ex = new CFException();
3636 +        final CompletableFuture<Integer> v42 = CompletableFuture.completedFuture(42);
3637 +        final CompletableFuture<Integer> incomplete = new CompletableFuture<>();
3638 +
3639 +        List<Function<CompletableFuture<Integer>, CompletableFuture<?>>> funs
3640 +            = new ArrayList<>();
3641 +
3642 +        funs.add((y) -> m.thenRun(y, new Noop(m)));
3643 +        funs.add((y) -> m.thenAccept(y, new NoopConsumer(m)));
3644 +        funs.add((y) -> m.thenApply(y, new IncFunction(m)));
3645 +
3646 +        funs.add((y) -> m.runAfterEither(y, incomplete, new Noop(m)));
3647 +        funs.add((y) -> m.acceptEither(y, incomplete, new NoopConsumer(m)));
3648 +        funs.add((y) -> m.applyToEither(y, incomplete, new IncFunction(m)));
3649 +
3650 +        funs.add((y) -> m.runAfterBoth(y, v42, new Noop(m)));
3651 +        funs.add((y) -> m.thenAcceptBoth(y, v42, new SubtractAction(m)));
3652 +        funs.add((y) -> m.thenCombine(y, v42, new SubtractFunction(m)));
3653 +
3654 +        funs.add((y) -> m.whenComplete(y, (Integer x, Throwable t) -> {}));
3655 +
3656 +        funs.add((y) -> m.thenCompose(y, new CompletableFutureInc(m)));
3657 +
3658 +        funs.add((y) -> CompletableFuture.allOf(new CompletableFuture<?>[] {y, v42}));
3659 +        funs.add((y) -> CompletableFuture.anyOf(new CompletableFuture<?>[] {y, incomplete}));
3660 +
3661 +        for (Function<CompletableFuture<Integer>, CompletableFuture<?>>
3662 +                 fun : funs) {
3663 +            CompletableFuture<Integer> f = new CompletableFuture<>();
3664 +            f.completeExceptionally(ex);
3665 +            CompletableFuture<Integer> src = m.thenApply(f, new IncFunction(m));
3666 +            checkCompletedWithWrappedException(src, ex);
3667 +            CompletableFuture<?> dep = fun.apply(src);
3668 +            checkCompletedWithWrappedException(dep, ex);
3669 +            assertSame(resultOf(src), resultOf(dep));
3670 +        }
3671 +
3672 +        for (Function<CompletableFuture<Integer>, CompletableFuture<?>>
3673 +                 fun : funs) {
3674 +            CompletableFuture<Integer> f = new CompletableFuture<>();
3675 +            CompletableFuture<Integer> src = m.thenApply(f, new IncFunction(m));
3676 +            CompletableFuture<?> dep = fun.apply(src);
3677 +            f.completeExceptionally(ex);
3678 +            checkCompletedWithWrappedException(src, ex);
3679 +            checkCompletedWithWrappedException(dep, ex);
3680 +            assertSame(resultOf(src), resultOf(dep));
3681 +        }
3682 +
3683 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
3684 +        for (Function<CompletableFuture<Integer>, CompletableFuture<?>>
3685 +                 fun : funs) {
3686 +            CompletableFuture<Integer> f = new CompletableFuture<>();
3687 +            f.cancel(mayInterruptIfRunning);
3688 +            checkCancelled(f);
3689 +            CompletableFuture<Integer> src = m.thenApply(f, new IncFunction(m));
3690 +            checkCompletedWithWrappedCancellationException(src);
3691 +            CompletableFuture<?> dep = fun.apply(src);
3692 +            checkCompletedWithWrappedCancellationException(dep);
3693 +            assertSame(resultOf(src), resultOf(dep));
3694 +        }
3695 +
3696 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
3697 +        for (Function<CompletableFuture<Integer>, CompletableFuture<?>>
3698 +                 fun : funs) {
3699 +            CompletableFuture<Integer> f = new CompletableFuture<>();
3700 +            CompletableFuture<Integer> src = m.thenApply(f, new IncFunction(m));
3701 +            CompletableFuture<?> dep = fun.apply(src);
3702 +            f.cancel(mayInterruptIfRunning);
3703 +            checkCancelled(f);
3704 +            checkCompletedWithWrappedCancellationException(src);
3705 +            checkCompletedWithWrappedCancellationException(dep);
3706 +            assertSame(resultOf(src), resultOf(dep));
3707 +        }
3708 +    }}
3709 +
3710   }

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