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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 1.58 by jsr166, Mon Jun 2 23:10:08 2014 UTC

# Line 1 | Line 1
1   /*
2 < * Written by Doug Lea with assistance from members of JCP JSR-166
3 < * Expert Group and released to the public domain, as explained at
2 > * Written by Doug Lea and Martin Buchholz with assistance from
3 > * members of JCP JSR-166 Expert Group and released to the public
4 > * domain, as explained at
5   * http://creativecommons.org/publicdomain/zero/1.0/
5 * Other contributors include Andrew Wright, Jeffrey Hayes,
6 * Pat Fisher, Mike Judd.
6   */
7  
8   import junit.framework.*;
9   import java.util.concurrent.Callable;
10 + import java.util.concurrent.Executor;
11 + import java.util.concurrent.ExecutorService;
12 + import java.util.concurrent.Executors;
13   import java.util.concurrent.CancellationException;
14   import java.util.concurrent.CountDownLatch;
15   import java.util.concurrent.ExecutionException;
16   import java.util.concurrent.Future;
17   import java.util.concurrent.CompletableFuture;
18 + import java.util.concurrent.CompletionException;
19 + import java.util.concurrent.CompletionStage;
20 + import java.util.concurrent.ForkJoinPool;
21 + import java.util.concurrent.ForkJoinTask;
22   import java.util.concurrent.TimeoutException;
23   import java.util.concurrent.atomic.AtomicInteger;
24   import static java.util.concurrent.TimeUnit.MILLISECONDS;
25   import static java.util.concurrent.TimeUnit.SECONDS;
26   import java.util.*;
27 + import java.util.function.Supplier;
28 + import java.util.function.Consumer;
29 + import java.util.function.BiConsumer;
30 + import java.util.function.Function;
31 + import java.util.function.BiFunction;
32  
33   public class CompletableFutureTest extends JSR166TestCase {
34  
# Line 28 | Line 39 | public class CompletableFutureTest exten
39          return new TestSuite(CompletableFutureTest.class);
40      }
41  
42 +    static class CFException extends RuntimeException {}
43 +
44 +    void checkIncomplete(CompletableFuture<?> f) {
45 +        assertFalse(f.isDone());
46 +        assertFalse(f.isCancelled());
47 +        assertTrue(f.toString().contains("[Not completed]"));
48 +        try {
49 +            assertNull(f.getNow(null));
50 +        } catch (Throwable fail) { threadUnexpectedException(fail); }
51 +        try {
52 +            f.get(0L, SECONDS);
53 +            shouldThrow();
54 +        }
55 +        catch (TimeoutException success) {}
56 +        catch (Throwable fail) { threadUnexpectedException(fail); }
57 +    }
58 +
59 +    <T> void checkCompletedNormally(CompletableFuture<T> f, T value) {
60 +        try {
61 +            assertEquals(value, f.get(LONG_DELAY_MS, MILLISECONDS));
62 +        } catch (Throwable fail) { threadUnexpectedException(fail); }
63 +        try {
64 +            assertEquals(value, f.join());
65 +        } catch (Throwable fail) { threadUnexpectedException(fail); }
66 +        try {
67 +            assertEquals(value, f.getNow(null));
68 +        } catch (Throwable fail) { threadUnexpectedException(fail); }
69 +        try {
70 +            assertEquals(value, f.get());
71 +        } catch (Throwable fail) { threadUnexpectedException(fail); }
72 +        assertTrue(f.isDone());
73 +        assertFalse(f.isCancelled());
74 +        assertFalse(f.isCompletedExceptionally());
75 +        assertTrue(f.toString().contains("[Completed normally]"));
76 +    }
77 +
78 +    void checkCompletedWithWrappedCFException(CompletableFuture<?> f) {
79 +        try {
80 +            f.get(LONG_DELAY_MS, MILLISECONDS);
81 +            shouldThrow();
82 +        } catch (ExecutionException success) {
83 +            assertTrue(success.getCause() instanceof CFException);
84 +        } catch (Throwable fail) { threadUnexpectedException(fail); }
85 +        try {
86 +            f.join();
87 +            shouldThrow();
88 +        } catch (CompletionException success) {
89 +            assertTrue(success.getCause() instanceof CFException);
90 +        }
91 +        try {
92 +            f.getNow(null);
93 +            shouldThrow();
94 +        } catch (CompletionException success) {
95 +            assertTrue(success.getCause() instanceof CFException);
96 +        }
97 +        try {
98 +            f.get();
99 +            shouldThrow();
100 +        } catch (ExecutionException success) {
101 +            assertTrue(success.getCause() instanceof CFException);
102 +        } catch (Throwable fail) { threadUnexpectedException(fail); }
103 +        assertTrue(f.isDone());
104 +        assertFalse(f.isCancelled());
105 +        assertTrue(f.toString().contains("[Completed exceptionally]"));
106 +    }
107 +
108 +    void checkCompletedWithWrappedCFException(CompletableFuture<?> f,
109 +                                              CFException ex) {
110 +        try {
111 +            f.get(LONG_DELAY_MS, MILLISECONDS);
112 +            shouldThrow();
113 +        } catch (ExecutionException success) {
114 +            assertSame(ex, success.getCause());
115 +        } catch (Throwable fail) { threadUnexpectedException(fail); }
116 +        try {
117 +            f.join();
118 +            shouldThrow();
119 +        } catch (CompletionException success) {
120 +            assertSame(ex, success.getCause());
121 +        }
122 +        try {
123 +            f.getNow(null);
124 +            shouldThrow();
125 +        } catch (CompletionException success) {
126 +            assertSame(ex, success.getCause());
127 +        }
128 +        try {
129 +            f.get();
130 +            shouldThrow();
131 +        } catch (ExecutionException success) {
132 +            assertSame(ex, success.getCause());
133 +        } catch (Throwable fail) { threadUnexpectedException(fail); }
134 +        assertTrue(f.isDone());
135 +        assertFalse(f.isCancelled());
136 +        assertTrue(f.toString().contains("[Completed exceptionally]"));
137 +    }
138 +
139 +    void checkCancelled(CompletableFuture<?> f) {
140 +        try {
141 +            f.get(LONG_DELAY_MS, MILLISECONDS);
142 +            shouldThrow();
143 +        } catch (CancellationException success) {
144 +        } catch (Throwable fail) { threadUnexpectedException(fail); }
145 +        try {
146 +            f.join();
147 +            shouldThrow();
148 +        } catch (CancellationException success) {}
149 +        try {
150 +            f.getNow(null);
151 +            shouldThrow();
152 +        } catch (CancellationException success) {}
153 +        try {
154 +            f.get();
155 +            shouldThrow();
156 +        } catch (CancellationException success) {
157 +        } catch (Throwable fail) { threadUnexpectedException(fail); }
158 +        assertTrue(f.isDone());
159 +        assertTrue(f.isCompletedExceptionally());
160 +        assertTrue(f.isCancelled());
161 +        assertTrue(f.toString().contains("[Completed exceptionally]"));
162 +    }
163 +
164 +    void checkCompletedWithWrappedCancellationException(CompletableFuture<?> f) {
165 +        try {
166 +            f.get(LONG_DELAY_MS, MILLISECONDS);
167 +            shouldThrow();
168 +        } catch (ExecutionException success) {
169 +            assertTrue(success.getCause() instanceof CancellationException);
170 +        } catch (Throwable fail) { threadUnexpectedException(fail); }
171 +        try {
172 +            f.join();
173 +            shouldThrow();
174 +        } catch (CompletionException success) {
175 +            assertTrue(success.getCause() instanceof CancellationException);
176 +        }
177 +        try {
178 +            f.getNow(null);
179 +            shouldThrow();
180 +        } catch (CompletionException success) {
181 +            assertTrue(success.getCause() instanceof CancellationException);
182 +        }
183 +        try {
184 +            f.get();
185 +            shouldThrow();
186 +        } catch (ExecutionException success) {
187 +            assertTrue(success.getCause() instanceof CancellationException);
188 +        } catch (Throwable fail) { threadUnexpectedException(fail); }
189 +        assertTrue(f.isDone());
190 +        assertFalse(f.isCancelled());
191 +        assertTrue(f.isCompletedExceptionally());
192 +        assertTrue(f.toString().contains("[Completed exceptionally]"));
193 +    }
194 +
195 +    /**
196 +     * A newly constructed CompletableFuture is incomplete, as indicated
197 +     * by methods isDone, isCancelled, and getNow
198 +     */
199 +    public void testConstructor() {
200 +        CompletableFuture<Integer> f = new CompletableFuture<>();
201 +        checkIncomplete(f);
202 +    }
203 +
204 +    /**
205 +     * complete completes normally, as indicated by methods isDone,
206 +     * isCancelled, join, get, and getNow
207 +     */
208 +    public void testComplete() {
209 +        CompletableFuture<Integer> f = new CompletableFuture<>();
210 +        checkIncomplete(f);
211 +        f.complete(one);
212 +        checkCompletedNormally(f, one);
213 +    }
214 +
215 +    /**
216 +     * completeExceptionally completes exceptionally, as indicated by
217 +     * methods isDone, isCancelled, join, get, and getNow
218 +     */
219 +    public void testCompleteExceptionally() {
220 +        CompletableFuture<Integer> f = new CompletableFuture<>();
221 +        checkIncomplete(f);
222 +        f.completeExceptionally(new CFException());
223 +        checkCompletedWithWrappedCFException(f);
224 +    }
225 +
226 +    /**
227 +     * cancel completes exceptionally and reports cancelled, as indicated by
228 +     * methods isDone, isCancelled, join, get, and getNow
229 +     */
230 +    public void testCancel() {
231 +        CompletableFuture<Integer> f = new CompletableFuture<>();
232 +        checkIncomplete(f);
233 +        assertTrue(f.cancel(true));
234 +        checkCancelled(f);
235 +    }
236 +
237 +    /**
238 +     * obtrudeValue forces completion with given value
239 +     */
240 +    public void testObtrudeValue() {
241 +        CompletableFuture<Integer> f = new CompletableFuture<>();
242 +        checkIncomplete(f);
243 +        f.complete(one);
244 +        checkCompletedNormally(f, one);
245 +        f.obtrudeValue(three);
246 +        checkCompletedNormally(f, three);
247 +        f.obtrudeValue(two);
248 +        checkCompletedNormally(f, two);
249 +        f = new CompletableFuture<>();
250 +        f.obtrudeValue(three);
251 +        checkCompletedNormally(f, three);
252 +        f.obtrudeValue(null);
253 +        checkCompletedNormally(f, null);
254 +        f = new CompletableFuture<>();
255 +        f.completeExceptionally(new CFException());
256 +        f.obtrudeValue(four);
257 +        checkCompletedNormally(f, four);
258 +    }
259 +
260 +    /**
261 +     * obtrudeException forces completion with given exception
262 +     */
263 +    public void testObtrudeException() {
264 +        CompletableFuture<Integer> f = new CompletableFuture<>();
265 +        checkIncomplete(f);
266 +        f.complete(one);
267 +        checkCompletedNormally(f, one);
268 +        f.obtrudeException(new CFException());
269 +        checkCompletedWithWrappedCFException(f);
270 +        f = new CompletableFuture<>();
271 +        f.obtrudeException(new CFException());
272 +        checkCompletedWithWrappedCFException(f);
273 +        f = new CompletableFuture<>();
274 +        f.completeExceptionally(new CFException());
275 +        f.obtrudeValue(four);
276 +        checkCompletedNormally(f, four);
277 +        f.obtrudeException(new CFException());
278 +        checkCompletedWithWrappedCFException(f);
279 +    }
280 +
281 +    /**
282 +     * getNumberOfDependents returns number of dependent tasks
283 +     */
284 +    public void testGetNumberOfDependents() {
285 +        CompletableFuture<Integer> f = new CompletableFuture<>();
286 +        assertEquals(0, f.getNumberOfDependents());
287 +        CompletableFuture g = f.thenRun(new Noop(ExecutionMode.DEFAULT));
288 +        assertEquals(1, f.getNumberOfDependents());
289 +        assertEquals(0, g.getNumberOfDependents());
290 +        CompletableFuture h = f.thenRun(new Noop(ExecutionMode.DEFAULT));
291 +        assertEquals(2, f.getNumberOfDependents());
292 +        f.complete(1);
293 +        checkCompletedNormally(g, null);
294 +        assertEquals(0, f.getNumberOfDependents());
295 +        assertEquals(0, g.getNumberOfDependents());
296 +    }
297 +
298 +    /**
299 +     * toString indicates current completion state
300 +     */
301      public void testToString() {
302          CompletableFuture<String> f;
303 <        assertTrue(new CompletableFuture<String>().toString()
34 <                   .contains("[Not completed]"));
303 >
304          f = new CompletableFuture<String>();
305 +        assertTrue(f.toString().contains("[Not completed]"));
306 +
307          f.complete("foo");
308          assertTrue(f.toString().contains("[Completed normally]"));
309 +
310          f = new CompletableFuture<String>();
311          f.completeExceptionally(new IndexOutOfBoundsException());
312          assertTrue(f.toString().contains("[Completed exceptionally]"));
313      }
314 +
315 +    /**
316 +     * completedFuture returns a completed CompletableFuture with given value
317 +     */
318 +    public void testCompletedFuture() {
319 +        CompletableFuture<String> f = CompletableFuture.completedFuture("test");
320 +        checkCompletedNormally(f, "test");
321 +    }
322 +
323 +    // Choose non-commutative actions for better coverage
324 +
325 +    // A non-commutative function that handles and produces null values as well.
326 +    static Integer subtract(Integer x, Integer y) {
327 +        return (x == null && y == null) ? null :
328 +            ((x == null) ? 42 : x.intValue())
329 +            - ((y == null) ? 99 : y.intValue());
330 +    }
331 +
332 +    // A function that handles and produces null values as well.
333 +    static Integer inc(Integer x) {
334 +        return (x == null) ? null : x + 1;
335 +    }
336 +
337 +    static final class IntegerSupplier implements Supplier<Integer> {
338 +        final ExecutionMode m;
339 +        int invocationCount = 0;
340 +        final Integer value;
341 +        IntegerSupplier(ExecutionMode m, Integer value) {
342 +            this.m = m;
343 +            this.value = value;
344 +        }
345 +        public Integer get() {
346 +            m.checkExecutionMode();
347 +            invocationCount++;
348 +            return value;
349 +        }
350 +    }
351 +        
352 +    static final class IncAction implements Consumer<Integer> {
353 +        int invocationCount = 0;
354 +        Integer value;
355 +        public void accept(Integer x) {
356 +            invocationCount++;
357 +            value = inc(x);
358 +        }
359 +    }
360 +    static final class IncFunction implements Function<Integer,Integer> {
361 +        final ExecutionMode m;
362 +        int invocationCount = 0;
363 +        Integer value;
364 +        IncFunction(ExecutionMode m) { this.m = m; }
365 +        public Integer apply(Integer x) {
366 +            m.checkExecutionMode();
367 +            invocationCount++;
368 +            return value = inc(x);
369 +        }
370 +    }
371 +    static final class SubtractAction implements BiConsumer<Integer, Integer> {
372 +        final ExecutionMode m;
373 +        int invocationCount = 0;
374 +        Integer value;
375 +        // Check this action was invoked exactly once when result is computed.
376 +        SubtractAction(ExecutionMode m) { this.m = m; }
377 +        public void accept(Integer x, Integer y) {
378 +            m.checkExecutionMode();
379 +            invocationCount++;
380 +            value = subtract(x, y);
381 +        }
382 +    }
383 +    static final class SubtractFunction implements BiFunction<Integer, Integer, Integer> {
384 +        final ExecutionMode m;
385 +        int invocationCount = 0;
386 +        Integer value;
387 +        // Check this action was invoked exactly once when result is computed.
388 +        SubtractFunction(ExecutionMode m) { this.m = m; }
389 +        public Integer apply(Integer x, Integer y) {
390 +            m.checkExecutionMode();
391 +            invocationCount++;
392 +            return value = subtract(x, y);
393 +        }
394 +    }
395 +    static final class Noop implements Runnable {
396 +        final ExecutionMode m;
397 +        int invocationCount = 0;
398 +        Noop(ExecutionMode m) { this.m = m; }
399 +        public void run() {
400 +            m.checkExecutionMode();
401 +            invocationCount++;
402 +        }
403 +    }
404 +
405 +    static final class FailingSupplier implements Supplier<Integer> {
406 +        final ExecutionMode m;
407 +        int invocationCount = 0;
408 +        FailingSupplier(ExecutionMode m) { this.m = m; }
409 +        public Integer get() {
410 +            m.checkExecutionMode();
411 +            invocationCount++;
412 +            throw new CFException();
413 +        }
414 +    }
415 +    static final class FailingConsumer implements Consumer<Integer> {
416 +        final ExecutionMode m;
417 +        int invocationCount = 0;
418 +        FailingConsumer(ExecutionMode m) { this.m = m; }
419 +        public void accept(Integer x) {
420 +            m.checkExecutionMode();
421 +            invocationCount++;
422 +            throw new CFException();
423 +        }
424 +    }
425 +    static final class FailingBiConsumer implements BiConsumer<Integer, Integer> {
426 +        final ExecutionMode m;
427 +        int invocationCount = 0;
428 +        FailingBiConsumer(ExecutionMode m) { this.m = m; }
429 +        public void accept(Integer x, Integer y) {
430 +            m.checkExecutionMode();
431 +            invocationCount++;
432 +            throw new CFException();
433 +        }
434 +    }
435 +    static final class FailingFunction implements Function<Integer, Integer> {
436 +        final ExecutionMode m;
437 +        int invocationCount = 0;
438 +        FailingFunction(ExecutionMode m) { this.m = m; }
439 +        public Integer apply(Integer x) {
440 +            m.checkExecutionMode();
441 +            invocationCount++;
442 +            throw new CFException();
443 +        }
444 +    }
445 +    static final class FailingBiFunction implements BiFunction<Integer, Integer, Integer> {
446 +        final ExecutionMode m;
447 +        int invocationCount = 0;
448 +        FailingBiFunction(ExecutionMode m) { this.m = m; }
449 +        public Integer apply(Integer x, Integer y) {
450 +            m.checkExecutionMode();
451 +            invocationCount++;
452 +            throw new CFException();
453 +        }
454 +    }
455 +    static final class FailingRunnable implements Runnable {
456 +        final ExecutionMode m;
457 +        int invocationCount = 0;
458 +        FailingRunnable(ExecutionMode m) { this.m = m; }
459 +        public void run() {
460 +            m.checkExecutionMode();
461 +            invocationCount++;
462 +            throw new CFException();
463 +        }
464 +    }
465 +
466 +    static final class CompletableFutureInc
467 +        implements Function<Integer, CompletableFuture<Integer>> {
468 +        final ExecutionMode m;
469 +        int invocationCount = 0;
470 +        CompletableFutureInc(ExecutionMode m) { this.m = m; }
471 +        public CompletableFuture<Integer> apply(Integer x) {
472 +            m.checkExecutionMode();
473 +            invocationCount++;
474 +            CompletableFuture<Integer> f = new CompletableFuture<>();
475 +            f.complete(inc(x));
476 +            return f;
477 +        }
478 +    }
479 +
480 +    static final class FailingCompletableFutureFunction
481 +        implements Function<Integer, CompletableFuture<Integer>> {
482 +        final ExecutionMode m;
483 +        int invocationCount = 0;
484 +        FailingCompletableFutureFunction(ExecutionMode m) { this.m = m; }
485 +        public CompletableFuture<Integer> apply(Integer x) {
486 +            m.checkExecutionMode();
487 +            invocationCount++;
488 +            throw new CFException();
489 +        }
490 +    }
491 +
492 +    // Used for explicit executor tests
493 +    static final class ThreadExecutor implements Executor {
494 +        final AtomicInteger count = new AtomicInteger(0);
495 +        static final ThreadGroup tg = new ThreadGroup("ThreadExecutor");
496 +        static boolean startedCurrentThread() {
497 +            return Thread.currentThread().getThreadGroup() == tg;
498 +        }
499 +
500 +        public void execute(Runnable r) {
501 +            count.getAndIncrement();
502 +            new Thread(tg, r).start();
503 +        }
504 +    }
505 +
506 +    /**
507 +     * Permits the testing of parallel code for the 3 different
508 +     * execution modes without repeating all the testing code.
509 +     */
510 +    enum ExecutionMode {
511 +        DEFAULT {
512 +            public void checkExecutionMode() {
513 +                assertNull(ForkJoinTask.getPool());
514 +            }
515 +            public CompletableFuture<Void> runAsync(Runnable a) {
516 +                throw new UnsupportedOperationException();
517 +            }
518 +            public <U> CompletableFuture<U> supplyAsync(Supplier<U> a) {
519 +                throw new UnsupportedOperationException();
520 +            }
521 +            public <T> CompletableFuture<Void> thenRun
522 +                (CompletableFuture<T> f, Runnable a) {
523 +                return f.thenRun(a);
524 +            }
525 +            public <T> CompletableFuture<Void> thenAccept
526 +                (CompletableFuture<T> f, Consumer<? super T> a) {
527 +                return f.thenAccept(a);
528 +            }
529 +            public <T,U> CompletableFuture<U> thenApply
530 +                (CompletableFuture<T> f, Function<? super T,U> a) {
531 +                return f.thenApply(a);
532 +            }
533 +            public <T,U> CompletableFuture<U> thenCompose
534 +                (CompletableFuture<T> f,
535 +                 Function<? super T,? extends CompletionStage<U>> a) {
536 +                return f.thenCompose(a);
537 +            }
538 +            public <T,U> CompletableFuture<U> handle
539 +                (CompletableFuture<T> f,
540 +                 BiFunction<? super T,Throwable,? extends U> a) {
541 +                return f.handle(a);
542 +            }
543 +            public <T> CompletableFuture<T> whenComplete
544 +                (CompletableFuture<T> f,
545 +                 BiConsumer<? super T,? super Throwable> a) {
546 +                return f.whenComplete(a);
547 +            }
548 +            public <T,U> CompletableFuture<Void> runAfterBoth
549 +                (CompletableFuture<T> f, CompletableFuture<U> g, Runnable a) {
550 +                return f.runAfterBoth(g, a);
551 +            }
552 +            public <T,U> CompletableFuture<Void> thenAcceptBoth
553 +                (CompletableFuture<T> f,
554 +                 CompletionStage<? extends U> g,
555 +                 BiConsumer<? super T,? super U> a) {
556 +                return f.thenAcceptBoth(g, a);
557 +            }
558 +            public <T,U,V> CompletableFuture<V> thenCombine
559 +                (CompletableFuture<T> f,
560 +                 CompletionStage<? extends U> g,
561 +                 BiFunction<? super T,? super U,? extends V> a) {
562 +                return f.thenCombine(g, a);
563 +            }
564 +            public <T> CompletableFuture<Void> runAfterEither
565 +                (CompletableFuture<T> f,
566 +                 CompletionStage<?> g,
567 +                 java.lang.Runnable a) {
568 +                return f.runAfterEither(g, a);
569 +            }
570 +            public <T> CompletableFuture<Void> acceptEither
571 +                (CompletableFuture<T> f,
572 +                 CompletionStage<? extends T> g,
573 +                 Consumer<? super T> a) {
574 +                return f.acceptEither(g, a);
575 +            }
576 +            public <T,U> CompletableFuture<U> applyToEither
577 +                (CompletableFuture<T> f,
578 +                 CompletionStage<? extends T> g,
579 +                 Function<? super T,U> a) {
580 +                return f.applyToEither(g, a);
581 +            }
582 +        },
583 +
584 +        ASYNC {
585 +            public void checkExecutionMode() {
586 +                assertSame(ForkJoinPool.commonPool(),
587 +                           ForkJoinTask.getPool());
588 +            }
589 +            public CompletableFuture<Void> runAsync(Runnable a) {
590 +                return CompletableFuture.runAsync(a);
591 +            }
592 +            public <U> CompletableFuture<U> supplyAsync(Supplier<U> a) {
593 +                return CompletableFuture.supplyAsync(a);
594 +            }
595 +            public <T> CompletableFuture<Void> thenRun
596 +                (CompletableFuture<T> f, Runnable a) {
597 +                return f.thenRunAsync(a);
598 +            }
599 +            public <T> CompletableFuture<Void> thenAccept
600 +                (CompletableFuture<T> f, Consumer<? super T> a) {
601 +                return f.thenAcceptAsync(a);
602 +            }
603 +            public <T,U> CompletableFuture<U> thenApply
604 +                (CompletableFuture<T> f, Function<? super T,U> a) {
605 +                return f.thenApplyAsync(a);
606 +            }
607 +            public <T,U> CompletableFuture<U> thenCompose
608 +                (CompletableFuture<T> f,
609 +                 Function<? super T,? extends CompletionStage<U>> a) {
610 +                return f.thenComposeAsync(a);
611 +            }
612 +            public <T,U> CompletableFuture<U> handle
613 +                (CompletableFuture<T> f,
614 +                 BiFunction<? super T,Throwable,? extends U> a) {
615 +                return f.handleAsync(a);
616 +            }
617 +            public <T> CompletableFuture<T> whenComplete
618 +                (CompletableFuture<T> f,
619 +                 BiConsumer<? super T,? super Throwable> a) {
620 +                return f.whenCompleteAsync(a);
621 +            }
622 +            public <T,U> CompletableFuture<Void> runAfterBoth
623 +                (CompletableFuture<T> f, CompletableFuture<U> g, Runnable a) {
624 +                return f.runAfterBothAsync(g, a);
625 +            }
626 +            public <T,U> CompletableFuture<Void> thenAcceptBoth
627 +                (CompletableFuture<T> f,
628 +                 CompletionStage<? extends U> g,
629 +                 BiConsumer<? super T,? super U> a) {
630 +                return f.thenAcceptBothAsync(g, a);
631 +            }
632 +            public <T,U,V> CompletableFuture<V> thenCombine
633 +                (CompletableFuture<T> f,
634 +                 CompletionStage<? extends U> g,
635 +                 BiFunction<? super T,? super U,? extends V> a) {
636 +                return f.thenCombineAsync(g, a);
637 +            }
638 +            public <T> CompletableFuture<Void> runAfterEither
639 +                (CompletableFuture<T> f,
640 +                 CompletionStage<?> g,
641 +                 java.lang.Runnable a) {
642 +                return f.runAfterEitherAsync(g, a);
643 +            }
644 +            public <T> CompletableFuture<Void> acceptEither
645 +                (CompletableFuture<T> f,
646 +                 CompletionStage<? extends T> g,
647 +                 Consumer<? super T> a) {
648 +                return f.acceptEitherAsync(g, a);
649 +            }
650 +            public <T,U> CompletableFuture<U> applyToEither
651 +                (CompletableFuture<T> f,
652 +                 CompletionStage<? extends T> g,
653 +                 Function<? super T,U> a) {
654 +                return f.applyToEitherAsync(g, a);
655 +            }
656 +        },
657 +
658 +        EXECUTOR {
659 +            public void checkExecutionMode() {
660 +                assertTrue(ThreadExecutor.startedCurrentThread());
661 +            }
662 +            public CompletableFuture<Void> runAsync(Runnable a) {
663 +                return CompletableFuture.runAsync(a, new ThreadExecutor());
664 +            }
665 +            public <U> CompletableFuture<U> supplyAsync(Supplier<U> a) {
666 +                return CompletableFuture.supplyAsync(a, new ThreadExecutor());
667 +            }
668 +            public <T> CompletableFuture<Void> thenRun
669 +                (CompletableFuture<T> f, Runnable a) {
670 +                return f.thenRunAsync(a, new ThreadExecutor());
671 +            }
672 +            public <T> CompletableFuture<Void> thenAccept
673 +                (CompletableFuture<T> f, Consumer<? super T> a) {
674 +                return f.thenAcceptAsync(a, new ThreadExecutor());
675 +            }
676 +            public <T,U> CompletableFuture<U> thenApply
677 +                (CompletableFuture<T> f, Function<? super T,U> a) {
678 +                return f.thenApplyAsync(a, new ThreadExecutor());
679 +            }
680 +            public <T,U> CompletableFuture<U> thenCompose
681 +                (CompletableFuture<T> f,
682 +                 Function<? super T,? extends CompletionStage<U>> a) {
683 +                return f.thenComposeAsync(a, new ThreadExecutor());
684 +            }
685 +            public <T,U> CompletableFuture<U> handle
686 +                (CompletableFuture<T> f,
687 +                 BiFunction<? super T,Throwable,? extends U> a) {
688 +                return f.handleAsync(a, new ThreadExecutor());
689 +            }
690 +            public <T> CompletableFuture<T> whenComplete
691 +                (CompletableFuture<T> f,
692 +                 BiConsumer<? super T,? super Throwable> a) {
693 +                return f.whenCompleteAsync(a, new ThreadExecutor());
694 +            }
695 +            public <T,U> CompletableFuture<Void> runAfterBoth
696 +                (CompletableFuture<T> f, CompletableFuture<U> g, Runnable a) {
697 +                return f.runAfterBothAsync(g, a, new ThreadExecutor());
698 +            }
699 +            public <T,U> CompletableFuture<Void> thenAcceptBoth
700 +                (CompletableFuture<T> f,
701 +                 CompletionStage<? extends U> g,
702 +                 BiConsumer<? super T,? super U> a) {
703 +                return f.thenAcceptBothAsync(g, a, new ThreadExecutor());
704 +            }
705 +            public <T,U,V> CompletableFuture<V> thenCombine
706 +                (CompletableFuture<T> f,
707 +                 CompletionStage<? extends U> g,
708 +                 BiFunction<? super T,? super U,? extends V> a) {
709 +                return f.thenCombineAsync(g, a, new ThreadExecutor());
710 +            }
711 +            public <T> CompletableFuture<Void> runAfterEither
712 +                (CompletableFuture<T> f,
713 +                 CompletionStage<?> g,
714 +                 java.lang.Runnable a) {
715 +                return f.runAfterEitherAsync(g, a, new ThreadExecutor());
716 +            }
717 +            public <T> CompletableFuture<Void> acceptEither
718 +                (CompletableFuture<T> f,
719 +                 CompletionStage<? extends T> g,
720 +                 Consumer<? super T> a) {
721 +                return f.acceptEitherAsync(g, a, new ThreadExecutor());
722 +            }
723 +            public <T,U> CompletableFuture<U> applyToEither
724 +                (CompletableFuture<T> f,
725 +                 CompletionStage<? extends T> g,
726 +                 Function<? super T,U> a) {
727 +                return f.applyToEitherAsync(g, a, new ThreadExecutor());
728 +            }
729 +        };
730 +
731 +        public abstract void checkExecutionMode();
732 +        public abstract CompletableFuture<Void> runAsync(Runnable a);
733 +        public abstract <U> CompletableFuture<U> supplyAsync(Supplier<U> a);
734 +        public abstract <T> CompletableFuture<Void> thenRun
735 +            (CompletableFuture<T> f, Runnable a);
736 +        public abstract <T> CompletableFuture<Void> thenAccept
737 +            (CompletableFuture<T> f, Consumer<? super T> a);
738 +        public abstract <T,U> CompletableFuture<U> thenApply
739 +            (CompletableFuture<T> f, Function<? super T,U> a);
740 +        public abstract <T,U> CompletableFuture<U> thenCompose
741 +            (CompletableFuture<T> f,
742 +             Function<? super T,? extends CompletionStage<U>> a);
743 +        public abstract <T,U> CompletableFuture<U> handle
744 +            (CompletableFuture<T> f,
745 +             BiFunction<? super T,Throwable,? extends U> a);
746 +        public abstract <T> CompletableFuture<T> whenComplete
747 +            (CompletableFuture<T> f,
748 +             BiConsumer<? super T,? super Throwable> a);
749 +        public abstract <T,U> CompletableFuture<Void> runAfterBoth
750 +            (CompletableFuture<T> f, CompletableFuture<U> g, Runnable a);
751 +        public abstract <T,U> CompletableFuture<Void> thenAcceptBoth
752 +            (CompletableFuture<T> f,
753 +             CompletionStage<? extends U> g,
754 +             BiConsumer<? super T,? super U> a);
755 +        public abstract <T,U,V> CompletableFuture<V> thenCombine
756 +            (CompletableFuture<T> f,
757 +             CompletionStage<? extends U> g,
758 +             BiFunction<? super T,? super U,? extends V> a);
759 +        public abstract <T> CompletableFuture<Void> runAfterEither
760 +            (CompletableFuture<T> f,
761 +             CompletionStage<?> g,
762 +             java.lang.Runnable a);
763 +        public abstract <T> CompletableFuture<Void> acceptEither
764 +            (CompletableFuture<T> f,
765 +             CompletionStage<? extends T> g,
766 +             Consumer<? super T> a);
767 +        public abstract <T,U> CompletableFuture<U> applyToEither
768 +            (CompletableFuture<T> f,
769 +             CompletionStage<? extends T> g,
770 +             Function<? super T,U> a);
771 +    }
772 +
773 +    /**
774 +     * exceptionally action is not invoked when source completes
775 +     * normally, and source result is propagated
776 +     */
777 +    public void testExceptionally_normalCompletion() {
778 +        for (boolean createIncomplete : new boolean[] { true, false })
779 +        for (Integer v1 : new Integer[] { 1, null })
780 +    {
781 +        final AtomicInteger a = new AtomicInteger(0);
782 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
783 +        if (!createIncomplete) f.complete(v1);
784 +        final CompletableFuture<Integer> g = f.exceptionally
785 +            ((Throwable t) -> {
786 +                // Should not be called
787 +                a.getAndIncrement();
788 +                throw new AssertionError();
789 +            });
790 +        if (createIncomplete) f.complete(v1);
791 +
792 +        checkCompletedNormally(g, v1);
793 +        checkCompletedNormally(f, v1);
794 +        assertEquals(0, a.get());
795 +    }}
796 +
797 +
798 +    /**
799 +     * exceptionally action completes with function value on source
800 +     * exception
801 +     */
802 +    public void testExceptionally_exceptionalCompletion() {
803 +        for (boolean createIncomplete : new boolean[] { true, false })
804 +        for (Integer v1 : new Integer[] { 1, null })
805 +    {
806 +        final AtomicInteger a = new AtomicInteger(0);
807 +        final CFException ex = new CFException();
808 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
809 +        if (!createIncomplete) f.completeExceptionally(ex);
810 +        final CompletableFuture<Integer> g = f.exceptionally
811 +            ((Throwable t) -> {
812 +                ExecutionMode.DEFAULT.checkExecutionMode();
813 +                threadAssertSame(t, ex);
814 +                a.getAndIncrement();
815 +                return v1;
816 +            });
817 +        if (createIncomplete) f.completeExceptionally(ex);
818 +
819 +        checkCompletedNormally(g, v1);
820 +        assertEquals(1, a.get());
821 +    }}
822 +
823 +    public void testExceptionally_exceptionalCompletionActionFailed() {
824 +        for (boolean createIncomplete : new boolean[] { true, false })
825 +        for (Integer v1 : new Integer[] { 1, null })
826 +    {
827 +        final AtomicInteger a = new AtomicInteger(0);
828 +        final CFException ex1 = new CFException();
829 +        final CFException ex2 = new CFException();
830 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
831 +        if (!createIncomplete) f.completeExceptionally(ex1);
832 +        final CompletableFuture<Integer> g = f.exceptionally
833 +            ((Throwable t) -> {
834 +                ExecutionMode.DEFAULT.checkExecutionMode();
835 +                threadAssertSame(t, ex1);
836 +                a.getAndIncrement();
837 +                throw ex2;
838 +            });
839 +        if (createIncomplete) f.completeExceptionally(ex1);
840 +
841 +        checkCompletedWithWrappedCFException(g, ex2);
842 +        assertEquals(1, a.get());
843 +    }}
844 +
845 +    /**
846 +     * handle action completes normally with function value on normal
847 +     * completion of source
848 +     */
849 +    public void testHandle_normalCompletion() {
850 +        for (ExecutionMode m : ExecutionMode.values())
851 +        for (boolean createIncomplete : new boolean[] { true, false })
852 +        for (Integer v1 : new Integer[] { 1, null })
853 +    {
854 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
855 +        final AtomicInteger a = new AtomicInteger(0);
856 +        if (!createIncomplete) f.complete(v1);
857 +        final CompletableFuture<Integer> g = m.handle
858 +            (f,
859 +             (Integer x, Throwable t) -> {
860 +                m.checkExecutionMode();
861 +                threadAssertSame(x, v1);
862 +                threadAssertNull(t);
863 +                a.getAndIncrement();
864 +                return inc(v1);
865 +            });
866 +        if (createIncomplete) f.complete(v1);
867 +
868 +        checkCompletedNormally(g, inc(v1));
869 +        checkCompletedNormally(f, v1);
870 +        assertEquals(1, a.get());
871 +    }}
872 +
873 +    /**
874 +     * handle action completes normally with function value on
875 +     * exceptional completion of source
876 +     */
877 +    public void testHandle_exceptionalCompletion() {
878 +        for (ExecutionMode m : ExecutionMode.values())
879 +        for (boolean createIncomplete : new boolean[] { true, false })
880 +        for (Integer v1 : new Integer[] { 1, null })
881 +    {
882 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
883 +        final AtomicInteger a = new AtomicInteger(0);
884 +        final CFException ex = new CFException();
885 +        if (!createIncomplete) f.completeExceptionally(ex);
886 +        final CompletableFuture<Integer> g = m.handle
887 +            (f,
888 +             (Integer x, Throwable t) -> {
889 +                m.checkExecutionMode();
890 +                threadAssertNull(x);
891 +                threadAssertSame(t, ex);
892 +                a.getAndIncrement();
893 +                return v1;
894 +            });
895 +        if (createIncomplete) f.completeExceptionally(ex);
896 +
897 +        checkCompletedNormally(g, v1);
898 +        checkCompletedWithWrappedCFException(f, ex);
899 +        assertEquals(1, a.get());
900 +    }}
901 +
902 +    /**
903 +     * handle action completes normally with function value on
904 +     * cancelled source
905 +     */
906 +    public void testHandle_sourceCancelled() {
907 +        for (ExecutionMode m : ExecutionMode.values())
908 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
909 +        for (boolean createIncomplete : new boolean[] { true, false })
910 +        for (Integer v1 : new Integer[] { 1, null })
911 +    {
912 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
913 +        final AtomicInteger a = new AtomicInteger(0);
914 +        if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
915 +        final CompletableFuture<Integer> g = m.handle
916 +            (f,
917 +             (Integer x, Throwable t) -> {
918 +                m.checkExecutionMode();
919 +                threadAssertNull(x);
920 +                threadAssertTrue(t instanceof CancellationException);
921 +                a.getAndIncrement();
922 +                return v1;
923 +            });
924 +        if (createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
925 +
926 +        checkCompletedNormally(g, v1);
927 +        checkCancelled(f);
928 +        assertEquals(1, a.get());
929 +    }}
930 +
931 +    /**
932 +     * handle result completes exceptionally if action does
933 +     */
934 +    public void testHandle_sourceFailedActionFailed() {
935 +        for (ExecutionMode m : ExecutionMode.values())
936 +        for (boolean createIncomplete : new boolean[] { true, false })
937 +    {
938 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
939 +        final AtomicInteger a = new AtomicInteger(0);
940 +        final CFException ex1 = new CFException();
941 +        final CFException ex2 = new CFException();
942 +        if (!createIncomplete) f.completeExceptionally(ex1);
943 +        final CompletableFuture<Integer> g = m.handle
944 +            (f,
945 +             (Integer x, Throwable t) -> {
946 +                m.checkExecutionMode();
947 +                threadAssertNull(x);
948 +                threadAssertSame(ex1, t);
949 +                a.getAndIncrement();
950 +                throw ex2;
951 +            });
952 +        if (createIncomplete) f.completeExceptionally(ex1);
953 +
954 +        checkCompletedWithWrappedCFException(g, ex2);
955 +        checkCompletedWithWrappedCFException(f, ex1);
956 +        assertEquals(1, a.get());
957 +    }}
958 +
959 +    public void testHandle_sourceCompletedNormallyActionFailed() {
960 +        for (ExecutionMode m : ExecutionMode.values())
961 +        for (boolean createIncomplete : new boolean[] { true, false })
962 +        for (Integer v1 : new Integer[] { 1, null })
963 +    {
964 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
965 +        final AtomicInteger a = new AtomicInteger(0);
966 +        final CFException ex = new CFException();
967 +        if (!createIncomplete) f.complete(v1);
968 +        final CompletableFuture<Integer> g = m.handle
969 +            (f,
970 +             (Integer x, Throwable t) -> {
971 +                m.checkExecutionMode();
972 +                threadAssertSame(x, v1);
973 +                threadAssertNull(t);
974 +                a.getAndIncrement();
975 +                throw ex;
976 +            });
977 +        if (createIncomplete) f.complete(v1);
978 +
979 +        checkCompletedWithWrappedCFException(g, ex);
980 +        checkCompletedNormally(f, v1);
981 +        assertEquals(1, a.get());
982 +    }}
983 +
984 +    /**
985 +     * runAsync completes after running Runnable
986 +     */
987 +    public void testRunAsync_normalCompletion() {
988 +        ExecutionMode[] executionModes = {
989 +            ExecutionMode.ASYNC,
990 +            ExecutionMode.EXECUTOR,
991 +        };
992 +        for (ExecutionMode m : executionModes)
993 +    {
994 +        final Noop r = new Noop(m);
995 +        final CompletableFuture<Void> f = m.runAsync(r);
996 +        assertNull(f.join());
997 +        checkCompletedNormally(f, null);
998 +        assertEquals(1, r.invocationCount);
999 +    }}
1000 +
1001 +    /**
1002 +     * failing runAsync completes exceptionally after running Runnable
1003 +     */
1004 +    public void testRunAsync_exceptionalCompletion() {
1005 +        ExecutionMode[] executionModes = {
1006 +            ExecutionMode.ASYNC,
1007 +            ExecutionMode.EXECUTOR,
1008 +        };
1009 +        for (ExecutionMode m : executionModes)
1010 +    {
1011 +        final FailingRunnable r = new FailingRunnable(m);
1012 +        final CompletableFuture<Void> f = m.runAsync(r);
1013 +        checkCompletedWithWrappedCFException(f);
1014 +        assertEquals(1, r.invocationCount);
1015 +    }}
1016 +
1017 +    /**
1018 +     * supplyAsync completes with result of supplier
1019 +     */
1020 +    public void testSupplyAsync_normalCompletion() {
1021 +        ExecutionMode[] executionModes = {
1022 +            ExecutionMode.ASYNC,
1023 +            ExecutionMode.EXECUTOR,
1024 +        };
1025 +        for (ExecutionMode m : executionModes)
1026 +        for (Integer v1 : new Integer[] { 1, null })
1027 +    {
1028 +        final IntegerSupplier r = new IntegerSupplier(m, v1);
1029 +        final CompletableFuture<Integer> f = m.supplyAsync(r);
1030 +        assertSame(v1, f.join());
1031 +        checkCompletedNormally(f, v1);
1032 +        assertEquals(1, r.invocationCount);
1033 +    }}
1034 +
1035 +    /**
1036 +     * Failing supplyAsync completes exceptionally
1037 +     */
1038 +    public void testSupplyAsync_exceptionalCompletion() {
1039 +        ExecutionMode[] executionModes = {
1040 +            ExecutionMode.ASYNC,
1041 +            ExecutionMode.EXECUTOR,
1042 +        };
1043 +        for (ExecutionMode m : executionModes)
1044 +    {
1045 +        FailingSupplier r = new FailingSupplier(m);
1046 +        CompletableFuture<Integer> f = m.supplyAsync(r);
1047 +        checkCompletedWithWrappedCFException(f);
1048 +        assertEquals(1, r.invocationCount);
1049 +    }}
1050 +
1051 +    // seq completion methods
1052 +
1053 +    /**
1054 +     * thenRun result completes normally after normal completion of source
1055 +     */
1056 +    public void testThenRun_normalCompletion() {
1057 +        for (ExecutionMode m : ExecutionMode.values())
1058 +        for (boolean createIncomplete : new boolean[] { true, false })
1059 +        for (Integer v1 : new Integer[] { 1, null })
1060 +    {
1061 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1062 +        final Noop r = new Noop(m);
1063 +        if (!createIncomplete) f.complete(v1);
1064 +        final CompletableFuture<Void> g = m.thenRun(f, r);
1065 +        if (createIncomplete) {
1066 +            checkIncomplete(g);
1067 +            f.complete(v1);
1068 +        }
1069 +
1070 +        checkCompletedNormally(g, null);
1071 +        checkCompletedNormally(f, v1);
1072 +        assertEquals(1, r.invocationCount);
1073 +    }}
1074 +
1075 +    /**
1076 +     * thenRun result completes exceptionally after exceptional
1077 +     * completion of source
1078 +     */
1079 +    public void testThenRun_exceptionalCompletion() {
1080 +        for (ExecutionMode m : ExecutionMode.values())
1081 +        for (boolean createIncomplete : new boolean[] { true, false })
1082 +    {
1083 +        final CFException ex = new CFException();
1084 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1085 +        final Noop r = new Noop(m);
1086 +        if (!createIncomplete) f.completeExceptionally(ex);
1087 +        final CompletableFuture<Void> g = m.thenRun(f, r);
1088 +        if (createIncomplete) {
1089 +            checkIncomplete(g);
1090 +            f.completeExceptionally(ex);
1091 +        }
1092 +
1093 +        checkCompletedWithWrappedCFException(g, ex);
1094 +        checkCompletedWithWrappedCFException(f, ex);
1095 +        assertEquals(0, r.invocationCount);
1096 +    }}
1097 +
1098 +    /**
1099 +     * thenRun result completes exceptionally if source cancelled
1100 +     */
1101 +    public void testThenRun_sourceCancelled() {
1102 +        for (ExecutionMode m : ExecutionMode.values())
1103 +        for (boolean createIncomplete : new boolean[] { true, false })
1104 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1105 +    {
1106 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1107 +        final Noop r = new Noop(m);
1108 +        if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
1109 +        final CompletableFuture<Void> g = m.thenRun(f, r);
1110 +        if (createIncomplete) {
1111 +            checkIncomplete(g);
1112 +            assertTrue(f.cancel(mayInterruptIfRunning));
1113 +        }
1114 +
1115 +        checkCompletedWithWrappedCancellationException(g);
1116 +        checkCancelled(f);
1117 +        assertEquals(0, r.invocationCount);
1118 +    }}
1119 +
1120 +    /**
1121 +     * thenRun result completes exceptionally if action does
1122 +     */
1123 +    public void testThenRun_actionFailed() {
1124 +        for (ExecutionMode m : ExecutionMode.values())
1125 +        for (boolean createIncomplete : new boolean[] { true, false })
1126 +        for (Integer v1 : new Integer[] { 1, null })
1127 +    {
1128 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1129 +        final FailingRunnable r = new FailingRunnable(m);
1130 +        if (!createIncomplete) f.complete(v1);
1131 +        final CompletableFuture<Void> g = m.thenRun(f, r);
1132 +        if (createIncomplete) {
1133 +            checkIncomplete(g);
1134 +            f.complete(v1);
1135 +        }
1136 +
1137 +        checkCompletedWithWrappedCFException(g);
1138 +        checkCompletedNormally(f, v1);
1139 +    }}
1140 +
1141 +    /**
1142 +     * thenApply result completes normally after normal completion of source
1143 +     */
1144 +    public void testThenApply_normalCompletion() {
1145 +        for (ExecutionMode m : ExecutionMode.values())
1146 +        for (boolean createIncomplete : new boolean[] { true, false })
1147 +        for (Integer v1 : new Integer[] { 1, null })
1148 +    {
1149 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1150 +        final IncFunction r = new IncFunction(m);
1151 +        if (!createIncomplete) f.complete(v1);
1152 +        final CompletableFuture<Integer> g = m.thenApply(f, r);
1153 +        if (createIncomplete) {
1154 +            checkIncomplete(g);
1155 +            f.complete(v1);
1156 +        }
1157 +
1158 +        checkCompletedNormally(g, inc(v1));
1159 +        checkCompletedNormally(f, v1);
1160 +        assertEquals(1, r.invocationCount);
1161 +    }}
1162 +
1163 +    /**
1164 +     * thenApply result completes exceptionally after exceptional
1165 +     * completion of source
1166 +     */
1167 +    public void testThenApply_exceptionalCompletion() {
1168 +        for (ExecutionMode m : ExecutionMode.values())
1169 +        for (boolean createIncomplete : new boolean[] { true, false })
1170 +    {
1171 +        final CFException ex = new CFException();
1172 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1173 +        final IncFunction r = new IncFunction(m);
1174 +        if (!createIncomplete) f.completeExceptionally(ex);
1175 +        final CompletableFuture<Integer> g = m.thenApply(f, r);
1176 +        if (createIncomplete) {
1177 +            checkIncomplete(g);
1178 +            f.completeExceptionally(ex);
1179 +        }
1180 +
1181 +        checkCompletedWithWrappedCFException(g, ex);
1182 +        checkCompletedWithWrappedCFException(f, ex);
1183 +        assertEquals(0, r.invocationCount);
1184 +    }}
1185 +
1186 +    /**
1187 +     * thenApply result completes exceptionally if source cancelled
1188 +     */
1189 +    public void testThenApply_sourceCancelled() {
1190 +        for (ExecutionMode m : ExecutionMode.values())
1191 +        for (boolean createIncomplete : new boolean[] { true, false })
1192 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1193 +    {
1194 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1195 +        final IncFunction r = new IncFunction(m);
1196 +        if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
1197 +        final CompletableFuture<Integer> g = m.thenApply(f, r);
1198 +        if (createIncomplete) {
1199 +            checkIncomplete(g);
1200 +            assertTrue(f.cancel(mayInterruptIfRunning));
1201 +        }
1202 +
1203 +        checkCompletedWithWrappedCancellationException(g);
1204 +        checkCancelled(f);
1205 +        assertEquals(0, r.invocationCount);
1206 +    }}
1207 +
1208 +    /**
1209 +     * thenApply result completes exceptionally if action does
1210 +     */
1211 +    public void testThenApply_actionFailed() {
1212 +        for (ExecutionMode m : ExecutionMode.values())
1213 +        for (boolean createIncomplete : new boolean[] { true, false })
1214 +        for (Integer v1 : new Integer[] { 1, null })
1215 +    {
1216 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1217 +        final FailingFunction r = new FailingFunction(m);
1218 +        if (!createIncomplete) f.complete(v1);
1219 +        final CompletableFuture<Integer> g = m.thenApply(f, r);
1220 +        if (createIncomplete) {
1221 +            checkIncomplete(g);
1222 +            f.complete(v1);
1223 +        }
1224 +
1225 +        checkCompletedWithWrappedCFException(g);
1226 +        checkCompletedNormally(f, v1);
1227 +    }}
1228 +
1229 +    /**
1230 +     * thenAccept result completes normally after normal completion of source
1231 +     */
1232 +    public void testThenAccept_normalCompletion() {
1233 +        for (ExecutionMode m : ExecutionMode.values())
1234 +        for (boolean createIncomplete : new boolean[] { true, false })
1235 +        for (Integer v1 : new Integer[] { 1, null })
1236 +    {
1237 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1238 +        final IncAction r = new IncAction();
1239 +        if (!createIncomplete) f.complete(v1);
1240 +        final CompletableFuture<Void> g = m.thenAccept(f, r);
1241 +        if (createIncomplete) {
1242 +            checkIncomplete(g);
1243 +            f.complete(v1);
1244 +        }
1245 +
1246 +        checkCompletedNormally(g, null);
1247 +        checkCompletedNormally(f, v1);
1248 +        assertEquals(1, r.invocationCount);
1249 +        assertEquals(inc(v1), r.value);
1250 +    }}
1251 +
1252 +    /**
1253 +     * thenAccept result completes exceptionally after exceptional
1254 +     * completion of source
1255 +     */
1256 +    public void testThenAccept_exceptionalCompletion() {
1257 +        for (ExecutionMode m : ExecutionMode.values())
1258 +        for (boolean createIncomplete : new boolean[] { true, false })
1259 +    {
1260 +        final CFException ex = new CFException();
1261 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1262 +        final IncAction r = new IncAction();
1263 +        if (!createIncomplete) f.completeExceptionally(ex);
1264 +        final CompletableFuture<Void> g = m.thenAccept(f, r);
1265 +        if (createIncomplete) {
1266 +            checkIncomplete(g);
1267 +            f.completeExceptionally(ex);
1268 +        }
1269 +
1270 +        checkCompletedWithWrappedCFException(g, ex);
1271 +        checkCompletedWithWrappedCFException(f, ex);
1272 +        assertEquals(0, r.invocationCount);
1273 +    }}
1274 +
1275 +    /**
1276 +     * thenAccept result completes exceptionally if action does
1277 +     */
1278 +    public void testThenAccept_actionFailed() {
1279 +        for (ExecutionMode m : ExecutionMode.values())
1280 +        for (boolean createIncomplete : new boolean[] { true, false })
1281 +        for (Integer v1 : new Integer[] { 1, null })
1282 +    {
1283 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1284 +        final FailingConsumer r = new FailingConsumer(m);
1285 +        if (!createIncomplete) f.complete(v1);
1286 +        final CompletableFuture<Void> g = m.thenAccept(f, r);
1287 +        if (createIncomplete) {
1288 +            checkIncomplete(g);
1289 +            f.complete(v1);
1290 +        }
1291 +
1292 +        checkCompletedWithWrappedCFException(g);
1293 +        checkCompletedNormally(f, v1);
1294 +    }}
1295 +
1296 +    /**
1297 +     * thenAccept result completes exceptionally if source cancelled
1298 +     */
1299 +    public void testThenAccept_sourceCancelled() {
1300 +        for (ExecutionMode m : ExecutionMode.values())
1301 +        for (boolean createIncomplete : new boolean[] { true, false })
1302 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1303 +    {
1304 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1305 +        final IncAction r = new IncAction();
1306 +        if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
1307 +        final CompletableFuture<Void> g = m.thenAccept(f, r);
1308 +        if (createIncomplete) {
1309 +            checkIncomplete(g);
1310 +            assertTrue(f.cancel(mayInterruptIfRunning));
1311 +        }
1312 +
1313 +        checkCompletedWithWrappedCancellationException(g);
1314 +        checkCancelled(f);
1315 +        assertEquals(0, r.invocationCount);
1316 +    }}
1317 +
1318 +    /**
1319 +     * thenCombine result completes normally after normal completion
1320 +     * of sources
1321 +     */
1322 +    public void testThenCombine_normalCompletion() {
1323 +        for (ExecutionMode m : ExecutionMode.values())
1324 +        for (boolean createIncomplete : new boolean[] { true, false })
1325 +        for (boolean fFirst : new boolean[] { true, false })
1326 +        for (Integer v1 : new Integer[] { 1, null })
1327 +        for (Integer v2 : new Integer[] { 2, null })
1328 +    {
1329 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1330 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1331 +        final SubtractFunction r = new SubtractFunction(m);
1332 +
1333 +        if (fFirst) f.complete(v1); else g.complete(v2);
1334 +        if (!createIncomplete)
1335 +            if (!fFirst) f.complete(v1); else g.complete(v2);
1336 +        final CompletableFuture<Integer> h = m.thenCombine(f, g, r);
1337 +        if (createIncomplete) {
1338 +            checkIncomplete(h);
1339 +            assertEquals(0, r.invocationCount);
1340 +            if (!fFirst) f.complete(v1); else g.complete(v2);
1341 +        }
1342 +
1343 +        checkCompletedNormally(h, subtract(v1, v2));
1344 +        checkCompletedNormally(f, v1);
1345 +        checkCompletedNormally(g, v2);
1346 +        assertEquals(1, r.invocationCount);
1347 +    }}
1348 +
1349 +    /**
1350 +     * thenCombine result completes exceptionally after exceptional
1351 +     * completion of either source
1352 +     */
1353 +    public void testThenCombine_exceptionalCompletion() {
1354 +        for (ExecutionMode m : ExecutionMode.values())
1355 +        for (boolean createIncomplete : new boolean[] { true, false })
1356 +        for (boolean fFirst : new boolean[] { true, false })
1357 +        for (Integer v1 : new Integer[] { 1, null })
1358 +    {
1359 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1360 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1361 +        final CFException ex = new CFException();
1362 +        final SubtractFunction r = new SubtractFunction(m);
1363 +
1364 +        (fFirst ? f : g).complete(v1);
1365 +        if (!createIncomplete)
1366 +            (!fFirst ? f : g).completeExceptionally(ex);
1367 +        final CompletableFuture<Integer> h = m.thenCombine(f, g, r);
1368 +        if (createIncomplete) {
1369 +            checkIncomplete(h);
1370 +            (!fFirst ? f : g).completeExceptionally(ex);
1371 +        }
1372 +
1373 +        checkCompletedWithWrappedCFException(h, ex);
1374 +        assertEquals(0, r.invocationCount);
1375 +        checkCompletedNormally(fFirst ? f : g, v1);
1376 +        checkCompletedWithWrappedCFException(!fFirst ? f : g, ex);
1377 +    }}
1378 +
1379 +    /**
1380 +     * thenCombine result completes exceptionally if action does
1381 +     */
1382 +    public void testThenCombine_actionFailed() {
1383 +        for (ExecutionMode m : ExecutionMode.values())
1384 +        for (boolean fFirst : new boolean[] { true, false })
1385 +        for (Integer v1 : new Integer[] { 1, null })
1386 +        for (Integer v2 : new Integer[] { 2, null })
1387 +    {
1388 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1389 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1390 +        final FailingBiFunction r = new FailingBiFunction(m);
1391 +        final CompletableFuture<Integer> h = m.thenCombine(f, g, r);
1392 +
1393 +        if (fFirst) {
1394 +            f.complete(v1);
1395 +            g.complete(v2);
1396 +        } else {
1397 +            g.complete(v2);
1398 +            f.complete(v1);
1399 +        }
1400 +
1401 +        checkCompletedWithWrappedCFException(h);
1402 +        checkCompletedNormally(f, v1);
1403 +        checkCompletedNormally(g, v2);
1404 +    }}
1405 +
1406 +    /**
1407 +     * thenCombine result completes exceptionally if either source cancelled
1408 +     */
1409 +    public void testThenCombine_sourceCancelled() {
1410 +        for (ExecutionMode m : ExecutionMode.values())
1411 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1412 +        for (boolean createIncomplete : new boolean[] { true, false })
1413 +        for (boolean fFirst : new boolean[] { true, false })
1414 +        for (Integer v1 : new Integer[] { 1, null })
1415 +    {
1416 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1417 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1418 +        final SubtractFunction r = new SubtractFunction(m);
1419 +
1420 +        (fFirst ? f : g).complete(v1);
1421 +        if (!createIncomplete)
1422 +            assertTrue((!fFirst ? f : g).cancel(mayInterruptIfRunning));
1423 +        final CompletableFuture<Integer> h = m.thenCombine(f, g, r);
1424 +        if (createIncomplete) {
1425 +            checkIncomplete(h);
1426 +            assertTrue((!fFirst ? f : g).cancel(mayInterruptIfRunning));
1427 +        }
1428 +
1429 +        checkCompletedWithWrappedCancellationException(h);
1430 +        checkCancelled(!fFirst ? f : g);
1431 +        assertEquals(0, r.invocationCount);
1432 +        checkCompletedNormally(fFirst ? f : g, v1);
1433 +    }}
1434 +
1435 +    /**
1436 +     * thenAcceptBoth result completes normally after normal
1437 +     * completion of sources
1438 +     */
1439 +    public void testThenAcceptBoth_normalCompletion() {
1440 +        for (ExecutionMode m : ExecutionMode.values())
1441 +        for (boolean createIncomplete : new boolean[] { true, false })
1442 +        for (boolean fFirst : new boolean[] { true, false })
1443 +        for (Integer v1 : new Integer[] { 1, null })
1444 +        for (Integer v2 : new Integer[] { 2, null })
1445 +    {
1446 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1447 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1448 +        final SubtractAction r = new SubtractAction(m);
1449 +
1450 +        if (fFirst) f.complete(v1); else g.complete(v2);
1451 +        if (!createIncomplete)
1452 +            if (!fFirst) f.complete(v1); else g.complete(v2);
1453 +        final CompletableFuture<Void> h = m.thenAcceptBoth(f, g, r);
1454 +        if (createIncomplete) {
1455 +            checkIncomplete(h);
1456 +            assertEquals(0, r.invocationCount);
1457 +            if (!fFirst) f.complete(v1); else g.complete(v2);
1458 +        }
1459 +
1460 +        checkCompletedNormally(h, null);
1461 +        assertEquals(subtract(v1, v2), r.value);
1462 +        checkCompletedNormally(f, v1);
1463 +        checkCompletedNormally(g, v2);
1464 +    }}
1465 +
1466 +    /**
1467 +     * thenAcceptBoth result completes exceptionally after exceptional
1468 +     * completion of either source
1469 +     */
1470 +    public void testThenAcceptBoth_exceptionalCompletion() {
1471 +        for (ExecutionMode m : ExecutionMode.values())
1472 +        for (boolean createIncomplete : new boolean[] { true, false })
1473 +        for (boolean fFirst : new boolean[] { true, false })
1474 +        for (Integer v1 : new Integer[] { 1, null })
1475 +    {
1476 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1477 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1478 +        final CFException ex = new CFException();
1479 +        final SubtractAction r = new SubtractAction(m);
1480 +
1481 +        (fFirst ? f : g).complete(v1);
1482 +        if (!createIncomplete)
1483 +            (!fFirst ? f : g).completeExceptionally(ex);
1484 +        final CompletableFuture<Void> h = m.thenAcceptBoth(f, g, r);
1485 +        if (createIncomplete) {
1486 +            checkIncomplete(h);
1487 +            (!fFirst ? f : g).completeExceptionally(ex);
1488 +        }
1489 +
1490 +        checkCompletedWithWrappedCFException(h, ex);
1491 +        assertEquals(0, r.invocationCount);
1492 +        checkCompletedNormally(fFirst ? f : g, v1);
1493 +        checkCompletedWithWrappedCFException(!fFirst ? f : g, ex);
1494 +    }}
1495 +
1496 +    /**
1497 +     * thenAcceptBoth result completes exceptionally if action does
1498 +     */
1499 +    public void testThenAcceptBoth_actionFailed() {
1500 +        for (ExecutionMode m : ExecutionMode.values())
1501 +        for (boolean fFirst : new boolean[] { true, false })
1502 +        for (Integer v1 : new Integer[] { 1, null })
1503 +        for (Integer v2 : new Integer[] { 2, null })
1504 +    {
1505 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1506 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1507 +        final FailingBiConsumer r = new FailingBiConsumer(m);
1508 +        final CompletableFuture<Void> h = m.thenAcceptBoth(f, g, r);
1509 +
1510 +        if (fFirst) {
1511 +            f.complete(v1);
1512 +            g.complete(v2);
1513 +        } else {
1514 +            g.complete(v2);
1515 +            f.complete(v1);
1516 +        }
1517 +
1518 +        checkCompletedWithWrappedCFException(h);
1519 +        checkCompletedNormally(f, v1);
1520 +        checkCompletedNormally(g, v2);
1521 +    }}
1522 +
1523 +    /**
1524 +     * thenAcceptBoth result completes exceptionally if either source cancelled
1525 +     */
1526 +    public void testThenAcceptBoth_sourceCancelled() {
1527 +        for (ExecutionMode m : ExecutionMode.values())
1528 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1529 +        for (boolean createIncomplete : new boolean[] { true, false })
1530 +        for (boolean fFirst : new boolean[] { true, false })
1531 +        for (Integer v1 : new Integer[] { 1, null })
1532 +    {
1533 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1534 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1535 +        final SubtractAction r = new SubtractAction(m);
1536 +
1537 +        (fFirst ? f : g).complete(v1);
1538 +        if (!createIncomplete)
1539 +            assertTrue((!fFirst ? f : g).cancel(mayInterruptIfRunning));
1540 +        final CompletableFuture<Void> h = m.thenAcceptBoth(f, g, r);
1541 +        if (createIncomplete) {
1542 +            checkIncomplete(h);
1543 +            assertTrue((!fFirst ? f : g).cancel(mayInterruptIfRunning));
1544 +        }
1545 +
1546 +        checkCompletedWithWrappedCancellationException(h);
1547 +        checkCancelled(!fFirst ? f : g);
1548 +        assertEquals(0, r.invocationCount);
1549 +        checkCompletedNormally(fFirst ? f : g, v1);
1550 +    }}
1551 +
1552 +    /**
1553 +     * runAfterBoth result completes normally after normal
1554 +     * completion of sources
1555 +     */
1556 +    public void testRunAfterBoth_normalCompletion() {
1557 +        for (ExecutionMode m : ExecutionMode.values())
1558 +        for (boolean createIncomplete : new boolean[] { true, false })
1559 +        for (boolean fFirst : new boolean[] { true, false })
1560 +        for (Integer v1 : new Integer[] { 1, null })
1561 +        for (Integer v2 : new Integer[] { 2, null })
1562 +    {
1563 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1564 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1565 +        final Noop r = new Noop(m);
1566 +
1567 +        if (fFirst) f.complete(v1); else g.complete(v2);
1568 +        if (!createIncomplete)
1569 +            if (!fFirst) f.complete(v1); else g.complete(v2);
1570 +        final CompletableFuture<Void> h = m.runAfterBoth(f, g, r);
1571 +        if (createIncomplete) {
1572 +            checkIncomplete(h);
1573 +            assertEquals(0, r.invocationCount);
1574 +            if (!fFirst) f.complete(v1); else g.complete(v2);
1575 +        }
1576 +
1577 +        checkCompletedNormally(h, null);
1578 +        assertEquals(1, r.invocationCount);
1579 +        checkCompletedNormally(f, v1);
1580 +        checkCompletedNormally(g, v2);
1581 +    }}
1582 +
1583 +    /**
1584 +     * runAfterBoth result completes exceptionally after exceptional
1585 +     * completion of either source
1586 +     */
1587 +    public void testRunAfterBoth_exceptionalCompletion() {
1588 +        for (ExecutionMode m : ExecutionMode.values())
1589 +        for (boolean createIncomplete : new boolean[] { true, false })
1590 +        for (boolean fFirst : new boolean[] { true, false })
1591 +        for (Integer v1 : new Integer[] { 1, null })
1592 +    {
1593 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1594 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1595 +        final CFException ex = new CFException();
1596 +        final Noop r = new Noop(m);
1597 +
1598 +        (fFirst ? f : g).complete(v1);
1599 +        if (!createIncomplete)
1600 +            (!fFirst ? f : g).completeExceptionally(ex);
1601 +        final CompletableFuture<Void> h = m.runAfterBoth(f, g, r);
1602 +        if (createIncomplete) {
1603 +            checkIncomplete(h);
1604 +            (!fFirst ? f : g).completeExceptionally(ex);
1605 +        }
1606 +
1607 +        checkCompletedWithWrappedCFException(h, ex);
1608 +        assertEquals(0, r.invocationCount);
1609 +        checkCompletedNormally(fFirst ? f : g, v1);
1610 +        checkCompletedWithWrappedCFException(!fFirst ? f : g, ex);
1611 +    }}
1612 +
1613 +    /**
1614 +     * runAfterBoth result completes exceptionally if action does
1615 +     */
1616 +    public void testRunAfterBoth_actionFailed() {
1617 +        for (ExecutionMode m : ExecutionMode.values())
1618 +        for (boolean fFirst : new boolean[] { true, false })
1619 +        for (Integer v1 : new Integer[] { 1, null })
1620 +        for (Integer v2 : new Integer[] { 2, null })
1621 +    {
1622 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1623 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1624 +        final FailingRunnable r = new FailingRunnable(m);
1625 +
1626 +        CompletableFuture<Void> h1 = m.runAfterBoth(f, g, r);
1627 +        if (fFirst) {
1628 +            f.complete(v1);
1629 +            g.complete(v2);
1630 +        } else {
1631 +            g.complete(v2);
1632 +            f.complete(v1);
1633 +        }
1634 +        CompletableFuture<Void> h2 = m.runAfterBoth(f, g, r);
1635 +
1636 +        checkCompletedWithWrappedCFException(h1);
1637 +        checkCompletedWithWrappedCFException(h2);
1638 +        checkCompletedNormally(f, v1);
1639 +        checkCompletedNormally(g, v2);
1640 +    }}
1641 +
1642 +    /**
1643 +     * runAfterBoth result completes exceptionally if either source cancelled
1644 +     */
1645 +    public void testRunAfterBoth_sourceCancelled() {
1646 +        for (ExecutionMode m : ExecutionMode.values())
1647 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1648 +        for (boolean createIncomplete : new boolean[] { true, false })
1649 +        for (boolean fFirst : new boolean[] { true, false })
1650 +        for (Integer v1 : new Integer[] { 1, null })
1651 +    {
1652 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1653 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1654 +        final Noop r = new Noop(m);
1655 +
1656 +
1657 +        (fFirst ? f : g).complete(v1);
1658 +        if (!createIncomplete)
1659 +            assertTrue((!fFirst ? f : g).cancel(mayInterruptIfRunning));
1660 +        final CompletableFuture<Void> h = m.runAfterBoth(f, g, r);
1661 +        if (createIncomplete) {
1662 +            checkIncomplete(h);
1663 +            assertTrue((!fFirst ? f : g).cancel(mayInterruptIfRunning));
1664 +        }
1665 +
1666 +        checkCompletedWithWrappedCancellationException(h);
1667 +        checkCancelled(!fFirst ? f : g);
1668 +        assertEquals(0, r.invocationCount);
1669 +        checkCompletedNormally(fFirst ? f : g, v1);
1670 +    }}
1671 +
1672 +    /**
1673 +     * applyToEither result completes normally after normal completion
1674 +     * of either source
1675 +     */
1676 +    public void testApplyToEither_normalCompletion() {
1677 +        for (ExecutionMode m : ExecutionMode.values())
1678 +        for (boolean createIncomplete : new boolean[] { true, false })
1679 +        for (boolean fFirst : new boolean[] { true, false })
1680 +        for (Integer v1 : new Integer[] { 1, null })
1681 +        for (Integer v2 : new Integer[] { 2, null })
1682 +    {
1683 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1684 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1685 +        final IncFunction r = new IncFunction(m);
1686 +
1687 +        if (!createIncomplete)
1688 +            if (fFirst) f.complete(v1); else g.complete(v2);
1689 +        final CompletableFuture<Integer> h = m.applyToEither(f, g, r);
1690 +        if (createIncomplete) {
1691 +            checkIncomplete(h);
1692 +            assertEquals(0, r.invocationCount);
1693 +            if (fFirst) f.complete(v1); else g.complete(v2);
1694 +        }
1695 +        checkCompletedNormally(h, inc(fFirst ? v1 : v2));
1696 +        if (!fFirst) f.complete(v1); else g.complete(v2);
1697 +
1698 +        checkCompletedNormally(f, v1);
1699 +        checkCompletedNormally(g, v2);
1700 +        checkCompletedNormally(h, inc(fFirst ? v1 : v2));
1701 +    }}
1702 +
1703 +    public void testApplyToEither_normalCompletionBothAvailable() {
1704 +        for (ExecutionMode m : ExecutionMode.values())
1705 +        for (boolean fFirst : new boolean[] { true, false })
1706 +        for (Integer v1 : new Integer[] { 1, null })
1707 +        for (Integer v2 : new Integer[] { 2, null })
1708 +    {
1709 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1710 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1711 +        final IncFunction r = new IncFunction(m);
1712 +
1713 +        if (fFirst) {
1714 +            f.complete(v1);
1715 +            g.complete(v2);
1716 +        } else {
1717 +            g.complete(v2);
1718 +            f.complete(v1);
1719 +        }
1720 +
1721 +        final CompletableFuture<Integer> h = m.applyToEither(f, g, r);
1722 +
1723 +        checkCompletedNormally(f, v1);
1724 +        checkCompletedNormally(g, v2);
1725 +
1726 +        // unspecified behavior
1727 +        assertTrue(Objects.equals(h.join(), inc(v1)) ||
1728 +                   Objects.equals(h.join(), inc(v2)));
1729 +        assertEquals(1, r.invocationCount);
1730 +    }}
1731 +
1732 +    /**
1733 +     * applyToEither result completes exceptionally after exceptional
1734 +     * completion of either source
1735 +     */
1736 +    public void testApplyToEither_exceptionalCompletion1() {
1737 +        for (ExecutionMode m : ExecutionMode.values())
1738 +        for (boolean createIncomplete : new boolean[] { true, false })
1739 +        for (boolean fFirst : new boolean[] { true, false })
1740 +        for (Integer v1 : new Integer[] { 1, null })
1741 +    {
1742 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1743 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1744 +        final CFException ex = new CFException();
1745 +        final IncFunction r = new IncFunction(m);
1746 +
1747 +        if (!createIncomplete) (fFirst ? f : g).completeExceptionally(ex);
1748 +        final CompletableFuture<Integer> h = m.applyToEither(f, g, r);
1749 +        if (createIncomplete) {
1750 +            checkIncomplete(h);
1751 +            assertEquals(0, r.invocationCount);
1752 +            (fFirst ? f : g).completeExceptionally(ex);
1753 +        }
1754 +
1755 +        checkCompletedWithWrappedCFException(h, ex);
1756 +        (!fFirst ? f : g).complete(v1);
1757 +
1758 +        assertEquals(0, r.invocationCount);
1759 +        checkCompletedNormally(!fFirst ? f : g, v1);
1760 +        checkCompletedWithWrappedCFException(fFirst ? f : g, ex);
1761 +        checkCompletedWithWrappedCFException(h, ex);
1762 +    }}
1763 +
1764 +    public void testApplyToEither_exceptionalCompletion2() {
1765 +        for (ExecutionMode m : ExecutionMode.values())
1766 +        for (boolean reverseArgs : new boolean[] { true, false })
1767 +        for (boolean fFirst : new boolean[] { true, false })
1768 +        for (Integer v1 : new Integer[] { 1, null })
1769 +    {
1770 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1771 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1772 +        final IncFunction r1 = new IncFunction(m);
1773 +        final IncFunction r2 = new IncFunction(m);
1774 +        final CFException ex = new CFException();
1775 +        final CompletableFuture<Integer> j = (reverseArgs ? g : f);
1776 +        final CompletableFuture<Integer> k = (reverseArgs ? f : g);
1777 +        final CompletableFuture<Integer> h1 = m.applyToEither(j, k, r1);
1778 +        if (fFirst) {
1779 +            f.complete(v1);
1780 +            g.completeExceptionally(ex);
1781 +        } else {
1782 +            g.completeExceptionally(ex);
1783 +            f.complete(v1);
1784 +        }
1785 +        final CompletableFuture<Integer> h2 = m.applyToEither(j, k, r2);
1786 +
1787 +        // unspecified behavior
1788 +        try {
1789 +            assertEquals(inc(v1), h1.join());
1790 +            assertEquals(1, r1.invocationCount);
1791 +        } catch (CompletionException ok) {
1792 +            checkCompletedWithWrappedCFException(h1, ex);
1793 +            assertEquals(0, r1.invocationCount);
1794 +        }
1795 +
1796 +        try {
1797 +            assertEquals(inc(v1), h2.join());
1798 +            assertEquals(1, r2.invocationCount);
1799 +        } catch (CompletionException ok) {
1800 +            checkCompletedWithWrappedCFException(h2, ex);
1801 +            assertEquals(0, r2.invocationCount);
1802 +        }
1803 +
1804 +        checkCompletedWithWrappedCFException(g, ex);
1805 +        checkCompletedNormally(f, v1);
1806 +    }}
1807 +
1808 +    /**
1809 +     * applyToEither result completes exceptionally if action does
1810 +     */
1811 +    public void testApplyToEither_actionFailed1() {
1812 +        for (ExecutionMode m : ExecutionMode.values())
1813 +        for (Integer v1 : new Integer[] { 1, null })
1814 +        for (Integer v2 : new Integer[] { 2, null })
1815 +    {
1816 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1817 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1818 +        final FailingFunction r = new FailingFunction(m);
1819 +        final CompletableFuture<Integer> h = m.applyToEither(f, g, r);
1820 +
1821 +        f.complete(v1);
1822 +        checkCompletedWithWrappedCFException(h);
1823 +        g.complete(v2);
1824 +        checkCompletedNormally(f, v1);
1825 +        checkCompletedNormally(g, v2);
1826 +    }}
1827 +
1828 +    public void testApplyToEither_actionFailed2() {
1829 +        for (ExecutionMode m : ExecutionMode.values())
1830 +        for (Integer v1 : new Integer[] { 1, null })
1831 +        for (Integer v2 : new Integer[] { 2, null })
1832 +    {
1833 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1834 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1835 +        final FailingFunction r = new FailingFunction(m);
1836 +        final CompletableFuture<Integer> h = m.applyToEither(f, g, r);
1837 +
1838 +        g.complete(v2);
1839 +        checkCompletedWithWrappedCFException(h);
1840 +        f.complete(v1);
1841 +        checkCompletedNormally(f, v1);
1842 +        checkCompletedNormally(g, v2);
1843 +    }}
1844 +
1845 +    /**
1846 +     * applyToEither result completes exceptionally if either source cancelled
1847 +     */
1848 +    public void testApplyToEither_sourceCancelled1() {
1849 +        for (ExecutionMode m : ExecutionMode.values())
1850 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1851 +        for (boolean createIncomplete : new boolean[] { true, false })
1852 +        for (boolean fFirst : new boolean[] { true, false })
1853 +        for (Integer v1 : new Integer[] { 1, null })
1854 +    {
1855 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1856 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1857 +        final IncFunction r = new IncFunction(m);
1858 +
1859 +        if (!createIncomplete) assertTrue((fFirst ? f : g).cancel(mayInterruptIfRunning));
1860 +        final CompletableFuture<Integer> h = m.applyToEither(f, g, r);
1861 +        if (createIncomplete) {
1862 +            checkIncomplete(h);
1863 +            assertEquals(0, r.invocationCount);
1864 +            assertTrue((fFirst ? f : g).cancel(mayInterruptIfRunning));
1865 +        }
1866 +
1867 +        checkCompletedWithWrappedCancellationException(h);
1868 +        (!fFirst ? f : g).complete(v1);
1869 +
1870 +        assertEquals(0, r.invocationCount);
1871 +        checkCompletedNormally(!fFirst ? f : g, v1);
1872 +        checkCancelled(fFirst ? f : g);
1873 +        checkCompletedWithWrappedCancellationException(h);
1874 +    }}
1875 +
1876 +    public void testApplyToEither_sourceCancelled2() {
1877 +        for (ExecutionMode m : ExecutionMode.values())
1878 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1879 +        for (boolean reverseArgs : new boolean[] { true, false })
1880 +        for (boolean fFirst : new boolean[] { true, false })
1881 +        for (Integer v1 : new Integer[] { 1, null })
1882 +    {
1883 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1884 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1885 +        final IncFunction r1 = new IncFunction(m);
1886 +        final IncFunction r2 = new IncFunction(m);
1887 +        final CFException ex = new CFException();
1888 +        final CompletableFuture<Integer> j = (reverseArgs ? g : f);
1889 +        final CompletableFuture<Integer> k = (reverseArgs ? f : g);
1890 +
1891 +        final CompletableFuture<Integer> h1 = m.applyToEither(j, k, r1);
1892 +        if (fFirst) {
1893 +            f.complete(v1);
1894 +            assertTrue(g.cancel(mayInterruptIfRunning));
1895 +        } else {
1896 +            assertTrue(g.cancel(mayInterruptIfRunning));
1897 +            f.complete(v1);
1898 +        }
1899 +        final CompletableFuture<Integer> h2 = m.applyToEither(j, k, r2);
1900 +
1901 +        // unspecified behavior
1902 +        try {
1903 +            assertEquals(inc(v1), h1.join());
1904 +            assertEquals(1, r1.invocationCount);
1905 +        } catch (CompletionException ok) {
1906 +            checkCompletedWithWrappedCancellationException(h1);
1907 +            assertEquals(0, r1.invocationCount);
1908 +        }
1909 +
1910 +        try {
1911 +            assertEquals(inc(v1), h2.join());
1912 +            assertEquals(1, r2.invocationCount);
1913 +        } catch (CompletionException ok) {
1914 +            checkCompletedWithWrappedCancellationException(h2);
1915 +            assertEquals(0, r2.invocationCount);
1916 +        }
1917 +
1918 +        checkCancelled(g);
1919 +        checkCompletedNormally(f, v1);
1920 +    }}
1921 +
1922 +    /**
1923 +     * acceptEither result completes normally after normal completion
1924 +     * of either source
1925 +     */
1926 +    public void testAcceptEither_normalCompletion1() {
1927 +        for (ExecutionMode m : ExecutionMode.values())
1928 +        for (Integer v1 : new Integer[] { 1, null })
1929 +        for (Integer v2 : new Integer[] { 2, null })
1930 +    {
1931 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1932 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1933 +        final IncAction r = new IncAction();
1934 +        final CompletableFuture<Void> h = m.acceptEither(f, g, r);
1935 +
1936 +        f.complete(v1);
1937 +        checkCompletedNormally(h, null);
1938 +        assertEquals(inc(v1), r.value);
1939 +        g.complete(v2);
1940 +
1941 +        checkCompletedNormally(f, v1);
1942 +        checkCompletedNormally(g, v2);
1943 +        checkCompletedNormally(h, null);
1944 +    }}
1945 +
1946 +    public void testAcceptEither_normalCompletion2() {
1947 +        for (ExecutionMode m : ExecutionMode.values())
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 IncAction r = new IncAction();
1954 +        final CompletableFuture<Void> h = m.acceptEither(f, g, r);
1955 +
1956 +        g.complete(v2);
1957 +        checkCompletedNormally(h, null);
1958 +        assertEquals(inc(v2), r.value);
1959 +        f.complete(v1);
1960 +
1961 +        checkCompletedNormally(f, v1);
1962 +        checkCompletedNormally(g, v2);
1963 +        checkCompletedNormally(h, null);
1964 +    }}
1965 +
1966 +    public void testAcceptEither_normalCompletion3() {
1967 +        for (ExecutionMode m : ExecutionMode.values())
1968 +        for (Integer v1 : new Integer[] { 1, null })
1969 +        for (Integer v2 : new Integer[] { 2, null })
1970 +    {
1971 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1972 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1973 +        final IncAction r = new IncAction();
1974 +
1975 +        f.complete(v1);
1976 +        g.complete(v2);
1977 +        final CompletableFuture<Void> h = m.acceptEither(f, g, r);
1978 +
1979 +        checkCompletedNormally(h, null);
1980 +        checkCompletedNormally(f, v1);
1981 +        checkCompletedNormally(g, v2);
1982 +
1983 +        // unspecified behavior
1984 +        assertTrue(Objects.equals(r.value, inc(v1)) ||
1985 +                   Objects.equals(r.value, inc(v2)));
1986 +    }}
1987 +
1988 +    /**
1989 +     * acceptEither result completes exceptionally after exceptional
1990 +     * completion of either source
1991 +     */
1992 +    public void testAcceptEither_exceptionalCompletion1() {
1993 +        for (ExecutionMode m : ExecutionMode.values())
1994 +        for (Integer v1 : new Integer[] { 1, null })
1995 +    {
1996 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1997 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1998 +        final IncAction r = new IncAction();
1999 +        final CompletableFuture<Void> h = m.acceptEither(f, g, r);
2000 +        final CFException ex = new CFException();
2001 +
2002 +        f.completeExceptionally(ex);
2003 +        checkCompletedWithWrappedCFException(h, ex);
2004 +        g.complete(v1);
2005 +
2006 +        assertEquals(0, r.invocationCount);
2007 +        checkCompletedNormally(g, v1);
2008 +        checkCompletedWithWrappedCFException(f, ex);
2009 +        checkCompletedWithWrappedCFException(h, ex);
2010 +    }}
2011 +
2012 +    public void testAcceptEither_exceptionalCompletion2() {
2013 +        for (ExecutionMode m : ExecutionMode.values())
2014 +        for (Integer v1 : new Integer[] { 1, null })
2015 +    {
2016 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2017 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2018 +        final IncAction r = new IncAction();
2019 +        final CompletableFuture<Void> h = m.acceptEither(f, g, r);
2020 +        final CFException ex = new CFException();
2021 +
2022 +        g.completeExceptionally(ex);
2023 +        checkCompletedWithWrappedCFException(h, ex);
2024 +        f.complete(v1);
2025 +
2026 +        assertEquals(0, r.invocationCount);
2027 +        checkCompletedNormally(f, v1);
2028 +        checkCompletedWithWrappedCFException(g, ex);
2029 +        checkCompletedWithWrappedCFException(h, ex);
2030 +    }}
2031 +
2032 +    public void testAcceptEither_exceptionalCompletion3() {
2033 +        for (ExecutionMode m : ExecutionMode.values())
2034 +        for (Integer v1 : new Integer[] { 1, null })
2035 +    {
2036 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2037 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2038 +        final IncAction r = new IncAction();
2039 +        final CFException ex = new CFException();
2040 +
2041 +        g.completeExceptionally(ex);
2042 +        f.complete(v1);
2043 +        final CompletableFuture<Void> h = m.acceptEither(f, g, r);
2044 +
2045 +        // unspecified behavior
2046 +        Integer v;
2047 +        try {
2048 +            assertNull(h.join());
2049 +            assertEquals(1, r.invocationCount);
2050 +            assertEquals(inc(v1), r.value);
2051 +        } catch (CompletionException ok) {
2052 +            checkCompletedWithWrappedCFException(h, ex);
2053 +            assertEquals(0, r.invocationCount);
2054 +        }
2055 +
2056 +        checkCompletedWithWrappedCFException(g, ex);
2057 +        checkCompletedNormally(f, v1);
2058 +    }}
2059 +
2060 +    public void testAcceptEither_exceptionalCompletion4() {
2061 +        for (ExecutionMode m : ExecutionMode.values())
2062 +        for (Integer v1 : new Integer[] { 1, null })
2063 +    {
2064 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2065 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2066 +        final IncAction r = new IncAction();
2067 +        final CFException ex = new CFException();
2068 +
2069 +        f.completeExceptionally(ex);
2070 +        g.complete(v1);
2071 +        final CompletableFuture<Void> h = m.acceptEither(f, g, r);
2072 +
2073 +        // unspecified behavior
2074 +        Integer v;
2075 +        try {
2076 +            assertNull(h.join());
2077 +            assertEquals(1, r.invocationCount);
2078 +            assertEquals(inc(v1), r.value);
2079 +        } catch (CompletionException ok) {
2080 +            checkCompletedWithWrappedCFException(h, ex);
2081 +            assertEquals(0, r.invocationCount);
2082 +        }
2083 +
2084 +        checkCompletedWithWrappedCFException(f, ex);
2085 +        checkCompletedNormally(g, v1);
2086 +    }}
2087 +
2088 +    /**
2089 +     * acceptEither result completes exceptionally if action does
2090 +     */
2091 +    public void testAcceptEither_actionFailed1() {
2092 +        for (ExecutionMode m : ExecutionMode.values())
2093 +        for (Integer v1 : new Integer[] { 1, null })
2094 +        for (Integer v2 : new Integer[] { 2, null })
2095 +    {
2096 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2097 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2098 +        final FailingConsumer r = new FailingConsumer(m);
2099 +        final CompletableFuture<Void> h = m.acceptEither(f, g, r);
2100 +
2101 +        f.complete(v1);
2102 +        checkCompletedWithWrappedCFException(h);
2103 +        g.complete(v2);
2104 +        checkCompletedNormally(f, v1);
2105 +        checkCompletedNormally(g, v2);
2106 +    }}
2107 +
2108 +    public void testAcceptEither_actionFailed2() {
2109 +        for (ExecutionMode m : ExecutionMode.values())
2110 +        for (Integer v1 : new Integer[] { 1, null })
2111 +        for (Integer v2 : new Integer[] { 2, null })
2112 +    {
2113 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2114 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2115 +        final FailingConsumer r = new FailingConsumer(m);
2116 +        final CompletableFuture<Void> h = m.acceptEither(f, g, r);
2117 +
2118 +        g.complete(v2);
2119 +        checkCompletedWithWrappedCFException(h);
2120 +        f.complete(v1);
2121 +        checkCompletedNormally(f, v1);
2122 +        checkCompletedNormally(g, v2);
2123 +    }}
2124 +
2125 +    /**
2126 +     * acceptEither result completes exceptionally if either source cancelled
2127 +     */
2128 +    public void testAcceptEither_sourceCancelled1() {
2129 +        for (ExecutionMode m : ExecutionMode.values())
2130 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2131 +        for (Integer v1 : new Integer[] { 1, null })
2132 +    {
2133 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2134 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2135 +        final IncAction r = new IncAction();
2136 +        final CompletableFuture<Void> h = m.acceptEither(f, g, r);
2137 +
2138 +        assertTrue(f.cancel(mayInterruptIfRunning));
2139 +        checkCompletedWithWrappedCancellationException(h);
2140 +        g.complete(v1);
2141 +
2142 +        checkCancelled(f);
2143 +        assertEquals(0, r.invocationCount);
2144 +        checkCompletedNormally(g, v1);
2145 +        checkCompletedWithWrappedCancellationException(h);
2146 +    }}
2147 +
2148 +    public void testAcceptEither_sourceCancelled2() {
2149 +        for (ExecutionMode m : ExecutionMode.values())
2150 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2151 +        for (Integer v1 : new Integer[] { 1, null })
2152 +    {
2153 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2154 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2155 +        final IncAction r = new IncAction();
2156 +        final CompletableFuture<Void> h = m.acceptEither(f, g, r);
2157 +
2158 +        assertTrue(g.cancel(mayInterruptIfRunning));
2159 +        checkCompletedWithWrappedCancellationException(h);
2160 +        f.complete(v1);
2161 +
2162 +        checkCancelled(g);
2163 +        assertEquals(0, r.invocationCount);
2164 +        checkCompletedNormally(f, v1);
2165 +        checkCompletedWithWrappedCancellationException(h);
2166 +    }}
2167 +
2168 +    public void testAcceptEither_sourceCancelled3() {
2169 +        for (ExecutionMode m : ExecutionMode.values())
2170 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2171 +        for (Integer v1 : new Integer[] { 1, null })
2172 +    {
2173 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2174 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2175 +        final IncAction r = new IncAction();
2176 +
2177 +        assertTrue(g.cancel(mayInterruptIfRunning));
2178 +        f.complete(v1);
2179 +        final CompletableFuture<Void> h = m.acceptEither(f, g, r);
2180 +
2181 +        // unspecified behavior
2182 +        Integer v;
2183 +        try {
2184 +            assertNull(h.join());
2185 +            assertEquals(1, r.invocationCount);
2186 +            assertEquals(inc(v1), r.value);
2187 +        } catch (CompletionException ok) {
2188 +            checkCompletedWithWrappedCancellationException(h);
2189 +            assertEquals(0, r.invocationCount);
2190 +        }
2191 +
2192 +        checkCancelled(g);
2193 +        checkCompletedNormally(f, v1);
2194 +    }}
2195 +
2196 +    public void testAcceptEither_sourceCancelled4() {
2197 +        for (ExecutionMode m : ExecutionMode.values())
2198 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2199 +        for (Integer v1 : new Integer[] { 1, null })
2200 +    {
2201 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2202 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2203 +        final IncAction r = new IncAction();
2204 +
2205 +        assertTrue(f.cancel(mayInterruptIfRunning));
2206 +        g.complete(v1);
2207 +        final CompletableFuture<Void> h = m.acceptEither(f, g, r);
2208 +
2209 +        // unspecified behavior
2210 +        Integer v;
2211 +        try {
2212 +            assertNull(h.join());
2213 +            assertEquals(1, r.invocationCount);
2214 +            assertEquals(inc(v1), r.value);
2215 +        } catch (CompletionException ok) {
2216 +            checkCompletedWithWrappedCancellationException(h);
2217 +            assertEquals(0, r.invocationCount);
2218 +        }
2219 +
2220 +        checkCancelled(f);
2221 +        checkCompletedNormally(g, v1);
2222 +    }}
2223 +
2224 +    /**
2225 +     * runAfterEither result completes normally after normal completion
2226 +     * of either source
2227 +     */
2228 +    public void testRunAfterEither_normalCompletion1() {
2229 +        for (ExecutionMode m : ExecutionMode.values())
2230 +        for (Integer v1 : new Integer[] { 1, null })
2231 +        for (Integer v2 : new Integer[] { 2, null })
2232 +    {
2233 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2234 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2235 +        final Noop r = new Noop(m);
2236 +        final CompletableFuture<Void> h = m.runAfterEither(f, g, r);
2237 +
2238 +        f.complete(v1);
2239 +        checkCompletedNormally(h, null);
2240 +        assertEquals(1, r.invocationCount);
2241 +        g.complete(v2);
2242 +
2243 +        checkCompletedNormally(f, v1);
2244 +        checkCompletedNormally(g, v2);
2245 +        checkCompletedNormally(h, null);
2246 +        assertEquals(1, r.invocationCount);
2247 +    }}
2248 +
2249 +    public void testRunAfterEither_normalCompletion2() {
2250 +        for (ExecutionMode m : ExecutionMode.values())
2251 +        for (Integer v1 : new Integer[] { 1, null })
2252 +        for (Integer v2 : new Integer[] { 2, null })
2253 +    {
2254 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2255 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2256 +        final Noop r = new Noop(m);
2257 +        final CompletableFuture<Void> h = m.runAfterEither(f, g, r);
2258 +
2259 +        g.complete(v2);
2260 +        checkCompletedNormally(h, null);
2261 +        assertEquals(1, r.invocationCount);
2262 +        f.complete(v1);
2263 +
2264 +        checkCompletedNormally(f, v1);
2265 +        checkCompletedNormally(g, v2);
2266 +        checkCompletedNormally(h, null);
2267 +        assertEquals(1, r.invocationCount);
2268 +        }}
2269 +
2270 +    public void testRunAfterEither_normalCompletion3() {
2271 +        for (ExecutionMode m : ExecutionMode.values())
2272 +        for (Integer v1 : new Integer[] { 1, null })
2273 +        for (Integer v2 : new Integer[] { 2, null })
2274 +    {
2275 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2276 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2277 +        final Noop r = new Noop(m);
2278 +
2279 +        f.complete(v1);
2280 +        g.complete(v2);
2281 +        final CompletableFuture<Void> h = m.runAfterEither(f, g, r);
2282 +
2283 +        checkCompletedNormally(h, null);
2284 +        checkCompletedNormally(f, v1);
2285 +        checkCompletedNormally(g, v2);
2286 +        assertEquals(1, r.invocationCount);
2287 +    }}
2288 +
2289 +    /**
2290 +     * runAfterEither result completes exceptionally after exceptional
2291 +     * completion of either source
2292 +     */
2293 +    public void testRunAfterEither_exceptionalCompletion1() {
2294 +        for (ExecutionMode m : ExecutionMode.values())
2295 +        for (Integer v1 : new Integer[] { 1, null })
2296 +    {
2297 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2298 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2299 +        final Noop r = new Noop(m);
2300 +        final CompletableFuture<Void> h = m.runAfterEither(f, g, r);
2301 +        final CFException ex = new CFException();
2302 +
2303 +        f.completeExceptionally(ex);
2304 +        checkCompletedWithWrappedCFException(h, ex);
2305 +        g.complete(v1);
2306 +
2307 +        assertEquals(0, r.invocationCount);
2308 +        checkCompletedNormally(g, v1);
2309 +        checkCompletedWithWrappedCFException(f, ex);
2310 +        checkCompletedWithWrappedCFException(h, ex);
2311 +    }}
2312 +
2313 +    public void testRunAfterEither_exceptionalCompletion2() {
2314 +        for (ExecutionMode m : ExecutionMode.values())
2315 +        for (Integer v1 : new Integer[] { 1, null })
2316 +    {
2317 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2318 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2319 +        final Noop r = new Noop(m);
2320 +        final CompletableFuture<Void> h = m.runAfterEither(f, g, r);
2321 +        final CFException ex = new CFException();
2322 +
2323 +        g.completeExceptionally(ex);
2324 +        checkCompletedWithWrappedCFException(h, ex);
2325 +        f.complete(v1);
2326 +
2327 +        assertEquals(0, r.invocationCount);
2328 +        checkCompletedNormally(f, v1);
2329 +        checkCompletedWithWrappedCFException(g, ex);
2330 +        checkCompletedWithWrappedCFException(h, ex);
2331 +    }}
2332 +
2333 +    public void testRunAfterEither_exceptionalCompletion3() {
2334 +        for (ExecutionMode m : ExecutionMode.values())
2335 +        for (Integer v1 : new Integer[] { 1, null })
2336 +    {
2337 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2338 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2339 +        final Noop r = new Noop(m);
2340 +        final CFException ex = new CFException();
2341 +
2342 +        g.completeExceptionally(ex);
2343 +        f.complete(v1);
2344 +        final CompletableFuture<Void> h = m.runAfterEither(f, g, r);
2345 +
2346 +        // unspecified behavior
2347 +        Integer v;
2348 +        try {
2349 +            assertNull(h.join());
2350 +            assertEquals(1, r.invocationCount);
2351 +        } catch (CompletionException ok) {
2352 +            checkCompletedWithWrappedCFException(h, ex);
2353 +            assertEquals(0, r.invocationCount);
2354 +        }
2355 +
2356 +        checkCompletedWithWrappedCFException(g, ex);
2357 +        checkCompletedNormally(f, v1);
2358 +    }}
2359 +
2360 +    public void testRunAfterEither_exceptionalCompletion4() {
2361 +        for (ExecutionMode m : ExecutionMode.values())
2362 +        for (Integer v1 : new Integer[] { 1, null })
2363 +    {
2364 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2365 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2366 +        final Noop r = new Noop(m);
2367 +        final CFException ex = new CFException();
2368 +
2369 +        f.completeExceptionally(ex);
2370 +        g.complete(v1);
2371 +        final CompletableFuture<Void> h = m.runAfterEither(f, g, r);
2372 +
2373 +        // unspecified behavior
2374 +        Integer v;
2375 +        try {
2376 +            assertNull(h.join());
2377 +            assertEquals(1, r.invocationCount);
2378 +        } catch (CompletionException ok) {
2379 +            checkCompletedWithWrappedCFException(h, ex);
2380 +            assertEquals(0, r.invocationCount);
2381 +        }
2382 +
2383 +        checkCompletedWithWrappedCFException(f, ex);
2384 +        checkCompletedNormally(g, v1);
2385 +    }}
2386 +
2387 +    /**
2388 +     * runAfterEither result completes exceptionally if action does
2389 +     */
2390 +    public void testRunAfterEither_actionFailed1() {
2391 +        for (ExecutionMode m : ExecutionMode.values())
2392 +        for (Integer v1 : new Integer[] { 1, null })
2393 +        for (Integer v2 : new Integer[] { 2, null })
2394 +    {
2395 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2396 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2397 +        final FailingRunnable r = new FailingRunnable(m);
2398 +        final CompletableFuture<Void> h = m.runAfterEither(f, g, r);
2399 +
2400 +        f.complete(v1);
2401 +        checkCompletedWithWrappedCFException(h);
2402 +        g.complete(v2);
2403 +        checkCompletedNormally(f, v1);
2404 +        checkCompletedNormally(g, v2);
2405 +    }}
2406 +
2407 +    public void testRunAfterEither_actionFailed2() {
2408 +        for (ExecutionMode m : ExecutionMode.values())
2409 +        for (Integer v1 : new Integer[] { 1, null })
2410 +        for (Integer v2 : new Integer[] { 2, null })
2411 +    {
2412 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2413 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2414 +        final FailingRunnable r = new FailingRunnable(m);
2415 +        final CompletableFuture<Void> h = m.runAfterEither(f, g, r);
2416 +
2417 +        g.complete(v2);
2418 +        checkCompletedWithWrappedCFException(h);
2419 +        f.complete(v1);
2420 +        checkCompletedNormally(f, v1);
2421 +        checkCompletedNormally(g, v2);
2422 +    }}
2423 +
2424 +    /**
2425 +     * runAfterEither result completes exceptionally if either source cancelled
2426 +     */
2427 +    public void testRunAfterEither_sourceCancelled1() {
2428 +        for (ExecutionMode m : ExecutionMode.values())
2429 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2430 +        for (Integer v1 : new Integer[] { 1, null })
2431 +    {
2432 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2433 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2434 +        final Noop r = new Noop(m);
2435 +        final CompletableFuture<Void> h = m.runAfterEither(f, g, r);
2436 +
2437 +        assertTrue(f.cancel(mayInterruptIfRunning));
2438 +        checkCompletedWithWrappedCancellationException(h);
2439 +        g.complete(v1);
2440 +
2441 +        checkCancelled(f);
2442 +        assertEquals(0, r.invocationCount);
2443 +        checkCompletedNormally(g, v1);
2444 +        checkCompletedWithWrappedCancellationException(h);
2445 +    }}
2446 +
2447 +    public void testRunAfterEither_sourceCancelled2() {
2448 +        for (ExecutionMode m : ExecutionMode.values())
2449 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2450 +        for (Integer v1 : new Integer[] { 1, null })
2451 +    {
2452 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2453 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2454 +        final Noop r = new Noop(m);
2455 +        final CompletableFuture<Void> h = m.runAfterEither(f, g, r);
2456 +
2457 +        assertTrue(g.cancel(mayInterruptIfRunning));
2458 +        checkCompletedWithWrappedCancellationException(h);
2459 +        f.complete(v1);
2460 +
2461 +        checkCancelled(g);
2462 +        assertEquals(0, r.invocationCount);
2463 +        checkCompletedNormally(f, v1);
2464 +        checkCompletedWithWrappedCancellationException(h);
2465 +    }}
2466 +
2467 +    public void testRunAfterEither_sourceCancelled3() {
2468 +        for (ExecutionMode m : ExecutionMode.values())
2469 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2470 +        for (Integer v1 : new Integer[] { 1, null })
2471 +    {
2472 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2473 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2474 +        final Noop r = new Noop(m);
2475 +
2476 +        assertTrue(g.cancel(mayInterruptIfRunning));
2477 +        f.complete(v1);
2478 +        final CompletableFuture<Void> h = m.runAfterEither(f, g, r);
2479 +
2480 +        // unspecified behavior
2481 +        Integer v;
2482 +        try {
2483 +            assertNull(h.join());
2484 +            assertEquals(1, r.invocationCount);
2485 +        } catch (CompletionException ok) {
2486 +            checkCompletedWithWrappedCancellationException(h);
2487 +            assertEquals(0, r.invocationCount);
2488 +        }
2489 +
2490 +        checkCancelled(g);
2491 +        checkCompletedNormally(f, v1);
2492 +    }}
2493 +
2494 +    public void testRunAfterEither_sourceCancelled4() {
2495 +        for (ExecutionMode m : ExecutionMode.values())
2496 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2497 +        for (Integer v1 : new Integer[] { 1, null })
2498 +    {
2499 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2500 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2501 +        final Noop r = new Noop(m);
2502 +
2503 +        assertTrue(f.cancel(mayInterruptIfRunning));
2504 +        g.complete(v1);
2505 +        final CompletableFuture<Void> h = m.runAfterEither(f, g, r);
2506 +
2507 +        // unspecified behavior
2508 +        Integer v;
2509 +        try {
2510 +            assertNull(h.join());
2511 +            assertEquals(1, r.invocationCount);
2512 +        } catch (CompletionException ok) {
2513 +            checkCompletedWithWrappedCancellationException(h);
2514 +            assertEquals(0, r.invocationCount);
2515 +        }
2516 +
2517 +        checkCancelled(f);
2518 +        checkCompletedNormally(g, v1);
2519 +    }}
2520 +
2521 +    /**
2522 +     * thenCompose result completes normally after normal completion of source
2523 +     */
2524 +    public void testThenCompose_normalCompletion() {
2525 +        for (ExecutionMode m : ExecutionMode.values())
2526 +        for (boolean createIncomplete : new boolean[] { true, false })
2527 +        for (Integer v1 : new Integer[] { 1, null })
2528 +    {
2529 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2530 +        final CompletableFutureInc r = new CompletableFutureInc(m);
2531 +        if (!createIncomplete) f.complete(v1);
2532 +        final CompletableFuture<Integer> g = m.thenCompose(f, r);
2533 +        if (createIncomplete) f.complete(v1);
2534 +
2535 +        checkCompletedNormally(g, inc(v1));
2536 +        checkCompletedNormally(f, v1);
2537 +        assertEquals(1, r.invocationCount);
2538 +    }}
2539 +
2540 +    /**
2541 +     * thenCompose result completes exceptionally after exceptional
2542 +     * completion of source
2543 +     */
2544 +    public void testThenCompose_exceptionalCompletion() {
2545 +        for (ExecutionMode m : ExecutionMode.values())
2546 +        for (boolean createIncomplete : new boolean[] { true, false })
2547 +    {
2548 +        final CFException ex = new CFException();
2549 +        final CompletableFutureInc r = new CompletableFutureInc(m);
2550 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2551 +        if (!createIncomplete) f.completeExceptionally(ex);
2552 +        final CompletableFuture<Integer> g = m.thenCompose(f, r);
2553 +        if (createIncomplete) f.completeExceptionally(ex);
2554 +
2555 +        checkCompletedWithWrappedCFException(g, ex);
2556 +        checkCompletedWithWrappedCFException(f, ex);
2557 +        assertEquals(0, r.invocationCount);
2558 +    }}
2559 +
2560 +    /**
2561 +     * thenCompose result completes exceptionally if action does
2562 +     */
2563 +    public void testThenCompose_actionFailed() {
2564 +        for (ExecutionMode m : ExecutionMode.values())
2565 +        for (boolean createIncomplete : new boolean[] { true, false })
2566 +        for (Integer v1 : new Integer[] { 1, null })
2567 +    {
2568 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2569 +        final FailingCompletableFutureFunction r
2570 +            = new FailingCompletableFutureFunction(m);
2571 +        if (!createIncomplete) f.complete(v1);
2572 +        final CompletableFuture<Integer> g = m.thenCompose(f, r);
2573 +        if (createIncomplete) f.complete(v1);
2574 +
2575 +        checkCompletedWithWrappedCFException(g);
2576 +        checkCompletedNormally(f, v1);
2577 +    }}
2578 +
2579 +    /**
2580 +     * thenCompose result completes exceptionally if source cancelled
2581 +     */
2582 +    public void testThenCompose_sourceCancelled() {
2583 +        for (ExecutionMode m : ExecutionMode.values())
2584 +        for (boolean createIncomplete : new boolean[] { true, false })
2585 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2586 +    {
2587 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2588 +        final CompletableFutureInc r = new CompletableFutureInc(m);
2589 +        if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
2590 +        final CompletableFuture<Integer> g = m.thenCompose(f, r);
2591 +        if (createIncomplete) {
2592 +            checkIncomplete(g);
2593 +            assertTrue(f.cancel(mayInterruptIfRunning));
2594 +        }
2595 +
2596 +        checkCompletedWithWrappedCancellationException(g);
2597 +        checkCancelled(f);
2598 +    }}
2599 +
2600 +    // other static methods
2601 +
2602 +    /**
2603 +     * allOf(no component futures) returns a future completed normally
2604 +     * with the value null
2605 +     */
2606 +    public void testAllOf_empty() throws Exception {
2607 +        CompletableFuture<Void> f = CompletableFuture.allOf();
2608 +        checkCompletedNormally(f, null);
2609 +    }
2610 +
2611 +    /**
2612 +     * allOf returns a future completed normally with the value null
2613 +     * when all components complete normally
2614 +     */
2615 +    public void testAllOf_normal() throws Exception {
2616 +        for (int k = 1; k < 20; ++k) {
2617 +            CompletableFuture<Integer>[] fs = (CompletableFuture<Integer>[]) new CompletableFuture[k];
2618 +            for (int i = 0; i < k; ++i)
2619 +                fs[i] = new CompletableFuture<>();
2620 +            CompletableFuture<Void> f = CompletableFuture.allOf(fs);
2621 +            for (int i = 0; i < k; ++i) {
2622 +                checkIncomplete(f);
2623 +                checkIncomplete(CompletableFuture.allOf(fs));
2624 +                fs[i].complete(one);
2625 +            }
2626 +            checkCompletedNormally(f, null);
2627 +            checkCompletedNormally(CompletableFuture.allOf(fs), null);
2628 +        }
2629 +    }
2630 +
2631 +    /**
2632 +     * anyOf(no component futures) returns an incomplete future
2633 +     */
2634 +    public void testAnyOf_empty() throws Exception {
2635 +        CompletableFuture<Object> f = CompletableFuture.anyOf();
2636 +        checkIncomplete(f);
2637 +    }
2638 +
2639 +    /**
2640 +     * anyOf returns a future completed normally with a value when
2641 +     * a component future does
2642 +     */
2643 +    public void testAnyOf_normal() throws Exception {
2644 +        for (int k = 0; k < 10; ++k) {
2645 +            CompletableFuture[] fs = new CompletableFuture[k];
2646 +            for (int i = 0; i < k; ++i)
2647 +                fs[i] = new CompletableFuture<>();
2648 +            CompletableFuture<Object> f = CompletableFuture.anyOf(fs);
2649 +            checkIncomplete(f);
2650 +            for (int i = 0; i < k; ++i) {
2651 +                fs[i].complete(one);
2652 +                checkCompletedNormally(f, one);
2653 +                checkCompletedNormally(CompletableFuture.anyOf(fs), one);
2654 +            }
2655 +        }
2656 +    }
2657 +
2658 +    /**
2659 +     * anyOf result completes exceptionally when any component does.
2660 +     */
2661 +    public void testAnyOf_exceptional() throws Exception {
2662 +        for (int k = 0; k < 10; ++k) {
2663 +            CompletableFuture[] fs = new CompletableFuture[k];
2664 +            for (int i = 0; i < k; ++i)
2665 +                fs[i] = new CompletableFuture<>();
2666 +            CompletableFuture<Object> f = CompletableFuture.anyOf(fs);
2667 +            checkIncomplete(f);
2668 +            for (int i = 0; i < k; ++i) {
2669 +                fs[i].completeExceptionally(new CFException());
2670 +                checkCompletedWithWrappedCFException(f);
2671 +                checkCompletedWithWrappedCFException(CompletableFuture.anyOf(fs));
2672 +            }
2673 +        }
2674 +    }
2675 +
2676 +    /**
2677 +     * Completion methods throw NullPointerException with null arguments
2678 +     */
2679 +    public void testNPE() {
2680 +        CompletableFuture<Integer> f = new CompletableFuture<>();
2681 +        CompletableFuture<Integer> g = new CompletableFuture<>();
2682 +        CompletableFuture<Integer> nullFuture = (CompletableFuture<Integer>)null;
2683 +        CompletableFuture<?> h;
2684 +        ThreadExecutor exec = new ThreadExecutor();
2685 +
2686 +        Runnable[] throwingActions = {
2687 +            () -> CompletableFuture.supplyAsync(null),
2688 +            () -> CompletableFuture.supplyAsync(null, exec),
2689 +            () -> CompletableFuture.supplyAsync(new IntegerSupplier(ExecutionMode.DEFAULT, 42), null),
2690 +
2691 +            () -> CompletableFuture.runAsync(null),
2692 +            () -> CompletableFuture.runAsync(null, exec),
2693 +            () -> CompletableFuture.runAsync(() -> {}, null),
2694 +
2695 +            () -> f.completeExceptionally(null),
2696 +
2697 +            () -> f.thenApply(null),
2698 +            () -> f.thenApplyAsync(null),
2699 +            () -> f.thenApplyAsync((x) -> x, null),
2700 +            () -> f.thenApplyAsync(null, exec),
2701 +
2702 +            () -> f.thenAccept(null),
2703 +            () -> f.thenAcceptAsync(null),
2704 +            () -> f.thenAcceptAsync((x) -> {} , null),
2705 +            () -> f.thenAcceptAsync(null, exec),
2706 +
2707 +            () -> f.thenRun(null),
2708 +            () -> f.thenRunAsync(null),
2709 +            () -> f.thenRunAsync(() -> {} , null),
2710 +            () -> f.thenRunAsync(null, exec),
2711 +
2712 +            () -> f.thenCombine(g, null),
2713 +            () -> f.thenCombineAsync(g, null),
2714 +            () -> f.thenCombineAsync(g, null, exec),
2715 +            () -> f.thenCombine(nullFuture, (x, y) -> x),
2716 +            () -> f.thenCombineAsync(nullFuture, (x, y) -> x),
2717 +            () -> f.thenCombineAsync(nullFuture, (x, y) -> x, exec),
2718 +            () -> f.thenCombineAsync(g, (x, y) -> x, null),
2719 +
2720 +            () -> f.thenAcceptBoth(g, null),
2721 +            () -> f.thenAcceptBothAsync(g, null),
2722 +            () -> f.thenAcceptBothAsync(g, null, exec),
2723 +            () -> f.thenAcceptBoth(nullFuture, (x, y) -> {}),
2724 +            () -> f.thenAcceptBothAsync(nullFuture, (x, y) -> {}),
2725 +            () -> f.thenAcceptBothAsync(nullFuture, (x, y) -> {}, exec),
2726 +            () -> f.thenAcceptBothAsync(g, (x, y) -> {}, null),
2727 +
2728 +            () -> f.runAfterBoth(g, null),
2729 +            () -> f.runAfterBothAsync(g, null),
2730 +            () -> f.runAfterBothAsync(g, null, exec),
2731 +            () -> f.runAfterBoth(nullFuture, () -> {}),
2732 +            () -> f.runAfterBothAsync(nullFuture, () -> {}),
2733 +            () -> f.runAfterBothAsync(nullFuture, () -> {}, exec),
2734 +            () -> f.runAfterBothAsync(g, () -> {}, null),
2735 +
2736 +            () -> f.applyToEither(g, null),
2737 +            () -> f.applyToEitherAsync(g, null),
2738 +            () -> f.applyToEitherAsync(g, null, exec),
2739 +            () -> f.applyToEither(nullFuture, (x) -> x),
2740 +            () -> f.applyToEitherAsync(nullFuture, (x) -> x),
2741 +            () -> f.applyToEitherAsync(nullFuture, (x) -> x, exec),
2742 +            () -> f.applyToEitherAsync(g, (x) -> x, null),
2743 +
2744 +            () -> f.acceptEither(g, null),
2745 +            () -> f.acceptEitherAsync(g, null),
2746 +            () -> f.acceptEitherAsync(g, null, exec),
2747 +            () -> f.acceptEither(nullFuture, (x) -> {}),
2748 +            () -> f.acceptEitherAsync(nullFuture, (x) -> {}),
2749 +            () -> f.acceptEitherAsync(nullFuture, (x) -> {}, exec),
2750 +            () -> f.acceptEitherAsync(g, (x) -> {}, null),
2751 +
2752 +            () -> f.runAfterEither(g, null),
2753 +            () -> f.runAfterEitherAsync(g, null),
2754 +            () -> f.runAfterEitherAsync(g, null, exec),
2755 +            () -> f.runAfterEither(nullFuture, () -> {}),
2756 +            () -> f.runAfterEitherAsync(nullFuture, () -> {}),
2757 +            () -> f.runAfterEitherAsync(nullFuture, () -> {}, exec),
2758 +            () -> f.runAfterEitherAsync(g, () -> {}, null),
2759 +
2760 +            () -> f.thenCompose(null),
2761 +            () -> f.thenComposeAsync(null),
2762 +            () -> f.thenComposeAsync(new CompletableFutureInc(ExecutionMode.EXECUTOR), null),
2763 +            () -> f.thenComposeAsync(null, exec),
2764 +
2765 +            () -> f.exceptionally(null),
2766 +
2767 +            () -> f.handle(null),
2768 +
2769 +            () -> CompletableFuture.allOf((CompletableFuture<?>)null),
2770 +            () -> CompletableFuture.allOf((CompletableFuture<?>[])null),
2771 +            () -> CompletableFuture.allOf(f, null),
2772 +            () -> CompletableFuture.allOf(null, f),
2773 +
2774 +            () -> CompletableFuture.anyOf((CompletableFuture<?>)null),
2775 +            () -> CompletableFuture.anyOf((CompletableFuture<?>[])null),
2776 +            () -> CompletableFuture.anyOf(f, null),
2777 +            () -> CompletableFuture.anyOf(null, f),
2778 +
2779 +            () -> f.obtrudeException(null),
2780 +        };
2781 +
2782 +        assertThrows(NullPointerException.class, throwingActions);
2783 +        assertEquals(0, exec.count.get());
2784 +    }
2785 +
2786 +    /**
2787 +     * toCompletableFuture returns this CompletableFuture.
2788 +     */
2789 +    public void testToCompletableFuture() {
2790 +        CompletableFuture<Integer> f = new CompletableFuture<>();
2791 +        assertSame(f, f.toCompletableFuture());
2792 +    }
2793 +
2794 +    /**
2795 +     * whenComplete action executes on normal completion, propagating
2796 +     * source result.
2797 +     */
2798 +    public void testWhenComplete_normalCompletion1() {
2799 +        for (ExecutionMode m : ExecutionMode.values())
2800 +        for (boolean createIncomplete : new boolean[] { true, false })
2801 +        for (Integer v1 : new Integer[] { 1, null })
2802 +    {
2803 +        final AtomicInteger a = new AtomicInteger(0);
2804 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2805 +        if (!createIncomplete) f.complete(v1);
2806 +        final CompletableFuture<Integer> g = m.whenComplete
2807 +            (f,
2808 +             (Integer x, Throwable t) -> {
2809 +                threadAssertSame(x, v1);
2810 +                threadAssertNull(t);
2811 +                a.getAndIncrement();
2812 +            });
2813 +        if (createIncomplete) f.complete(v1);
2814 +
2815 +        checkCompletedNormally(g, v1);
2816 +        checkCompletedNormally(f, v1);
2817 +        assertEquals(1, a.get());
2818 +    }}
2819 +
2820 +    /**
2821 +     * whenComplete action executes on exceptional completion, propagating
2822 +     * source result.
2823 +     */
2824 +    public void testWhenComplete_exceptionalCompletion() {
2825 +        for (ExecutionMode m : ExecutionMode.values())
2826 +        for (boolean createIncomplete : new boolean[] { true, false })
2827 +        for (Integer v1 : new Integer[] { 1, null })
2828 +    {
2829 +        final AtomicInteger a = new AtomicInteger(0);
2830 +        final CFException ex = new CFException();
2831 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2832 +        if (!createIncomplete) f.completeExceptionally(ex);
2833 +        final CompletableFuture<Integer> g = m.whenComplete
2834 +            (f,
2835 +             (Integer x, Throwable t) -> {
2836 +                threadAssertNull(x);
2837 +                threadAssertSame(t, ex);
2838 +                a.getAndIncrement();
2839 +            });
2840 +        if (createIncomplete) f.completeExceptionally(ex);
2841 +        checkCompletedWithWrappedCFException(f, ex);
2842 +        checkCompletedWithWrappedCFException(g, ex);
2843 +        assertEquals(1, a.get());
2844 +    }}
2845 +
2846 +    /**
2847 +     * whenComplete action executes on cancelled source, propagating
2848 +     * CancellationException.
2849 +     */
2850 +    public void testWhenComplete_sourceCancelled() {
2851 +        for (ExecutionMode m : ExecutionMode.values())
2852 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2853 +        for (boolean createIncomplete : new boolean[] { true, false })
2854 +    {
2855 +        final AtomicInteger a = new AtomicInteger(0);
2856 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2857 +        if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
2858 +        final CompletableFuture<Integer> g = m.whenComplete
2859 +            (f,
2860 +             (Integer x, Throwable t) -> {
2861 +                threadAssertNull(x);
2862 +                threadAssertTrue(t instanceof CancellationException);
2863 +                a.getAndIncrement();
2864 +            });
2865 +        if (createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
2866 +
2867 +        //try { g.join(); } catch (Throwable t) { throw new Error(t); }
2868 +        checkCompletedWithWrappedCancellationException(g);
2869 +        checkCancelled(f);
2870 +        assertEquals(1, a.get());
2871 +    }}
2872 +
2873 +    /**
2874 +     * If a whenComplete action throws an exception when triggered by
2875 +     * a normal completion, it completes exceptionally
2876 +     */
2877 +    public void testWhenComplete_actionFailed() {
2878 +        for (boolean createIncomplete : new boolean[] { true, false })
2879 +        for (ExecutionMode m : ExecutionMode.values())
2880 +        for (Integer v1 : new Integer[] { 1, null })
2881 +    {
2882 +        final AtomicInteger a = new AtomicInteger(0);
2883 +        final CFException ex = new CFException();
2884 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2885 +        if (!createIncomplete) f.complete(v1);
2886 +        final CompletableFuture<Integer> g = m.whenComplete
2887 +            (f,
2888 +             (Integer x, Throwable t) -> {
2889 +                threadAssertSame(x, v1);
2890 +                threadAssertNull(t);
2891 +                a.getAndIncrement();
2892 +                throw ex;
2893 +            });
2894 +        if (createIncomplete) f.complete(v1);
2895 +        checkCompletedNormally(f, v1);
2896 +        checkCompletedWithWrappedCFException(g, ex);
2897 +        assertEquals(1, a.get());
2898 +    }}
2899 +
2900 +    /**
2901 +     * If a whenComplete action throws an exception when triggered by
2902 +     * a source completion that also throws an exception, the source
2903 +     * exception takes precedence.
2904 +     */
2905 +    public void testWhenComplete_actionFailedSourceFailed() {
2906 +        for (boolean createIncomplete : new boolean[] { true, false })
2907 +        for (ExecutionMode m : ExecutionMode.values())
2908 +        for (Integer v1 : new Integer[] { 1, null })
2909 +    {
2910 +        final AtomicInteger a = new AtomicInteger(0);
2911 +        final CFException ex1 = new CFException();
2912 +        final CFException ex2 = new CFException();
2913 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2914 +
2915 +        if (!createIncomplete) f.completeExceptionally(ex1);
2916 +        final CompletableFuture<Integer> g = m.whenComplete
2917 +            (f,
2918 +             (Integer x, Throwable t) -> {
2919 +                threadAssertSame(t, ex1);
2920 +                threadAssertNull(x);
2921 +                a.getAndIncrement();
2922 +                throw ex2;
2923 +            });
2924 +        if (createIncomplete) f.completeExceptionally(ex1);
2925 +
2926 +        checkCompletedWithWrappedCFException(f, ex1);
2927 +        checkCompletedWithWrappedCFException(g, ex1);
2928 +        assertEquals(1, a.get());
2929 +    }}
2930 +
2931   }

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