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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 1.61 by jsr166, Wed Jun 4 04:34:49 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 +    static final class IntegerSupplier implements Supplier<Integer> {
324 +        final ExecutionMode m;
325 +        int invocationCount = 0;
326 +        final Integer value;
327 +        IntegerSupplier(ExecutionMode m, Integer value) {
328 +            this.m = m;
329 +            this.value = value;
330 +        }
331 +        public Integer get() {
332 +            m.checkExecutionMode();
333 +            invocationCount++;
334 +            return value;
335 +        }
336 +    }
337 +
338 +    // A function that handles and produces null values as well.
339 +    static Integer inc(Integer x) {
340 +        return (x == null) ? null : x + 1;
341 +    }
342 +
343 +    static final class IncAction implements Consumer<Integer> {
344 +        int invocationCount = 0;
345 +        Integer value;
346 +        public void accept(Integer x) {
347 +            invocationCount++;
348 +            value = inc(x);
349 +        }
350 +    }
351 +    static final class IncFunction implements Function<Integer,Integer> {
352 +        final ExecutionMode m;
353 +        int invocationCount = 0;
354 +        Integer value;
355 +        IncFunction(ExecutionMode m) { this.m = m; }
356 +        public Integer apply(Integer x) {
357 +            m.checkExecutionMode();
358 +            invocationCount++;
359 +            return value = inc(x);
360 +        }
361 +    }
362 +
363 +    // Choose non-commutative actions for better coverage
364 +    // A non-commutative function that handles and produces null values as well.
365 +    static Integer subtract(Integer x, Integer y) {
366 +        return (x == null && y == null) ? null :
367 +            ((x == null) ? 42 : x.intValue())
368 +            - ((y == null) ? 99 : y.intValue());
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 +
396 +    static final class Noop implements Runnable {
397 +        final ExecutionMode m;
398 +        int invocationCount = 0;
399 +        Noop(ExecutionMode m) { this.m = m; }
400 +        public void run() {
401 +            m.checkExecutionMode();
402 +            invocationCount++;
403 +        }
404 +    }
405 +
406 +    static final class FailingSupplier implements Supplier<Integer> {
407 +        final ExecutionMode m;
408 +        int invocationCount = 0;
409 +        FailingSupplier(ExecutionMode m) { this.m = m; }
410 +        public Integer get() {
411 +            m.checkExecutionMode();
412 +            invocationCount++;
413 +            throw new CFException();
414 +        }
415 +    }
416 +    static final class FailingConsumer implements Consumer<Integer> {
417 +        final ExecutionMode m;
418 +        int invocationCount = 0;
419 +        FailingConsumer(ExecutionMode m) { this.m = m; }
420 +        public void accept(Integer x) {
421 +            m.checkExecutionMode();
422 +            invocationCount++;
423 +            throw new CFException();
424 +        }
425 +    }
426 +    static final class FailingBiConsumer implements BiConsumer<Integer, Integer> {
427 +        final ExecutionMode m;
428 +        int invocationCount = 0;
429 +        FailingBiConsumer(ExecutionMode m) { this.m = m; }
430 +        public void accept(Integer x, Integer y) {
431 +            m.checkExecutionMode();
432 +            invocationCount++;
433 +            throw new CFException();
434 +        }
435 +    }
436 +    static final class FailingFunction implements Function<Integer, Integer> {
437 +        final ExecutionMode m;
438 +        int invocationCount = 0;
439 +        FailingFunction(ExecutionMode m) { this.m = m; }
440 +        public Integer apply(Integer x) {
441 +            m.checkExecutionMode();
442 +            invocationCount++;
443 +            throw new CFException();
444 +        }
445 +    }
446 +    static final class FailingBiFunction implements BiFunction<Integer, Integer, Integer> {
447 +        final ExecutionMode m;
448 +        int invocationCount = 0;
449 +        FailingBiFunction(ExecutionMode m) { this.m = m; }
450 +        public Integer apply(Integer x, Integer y) {
451 +            m.checkExecutionMode();
452 +            invocationCount++;
453 +            throw new CFException();
454 +        }
455 +    }
456 +    static final class FailingRunnable implements Runnable {
457 +        final ExecutionMode m;
458 +        int invocationCount = 0;
459 +        FailingRunnable(ExecutionMode m) { this.m = m; }
460 +        public void run() {
461 +            m.checkExecutionMode();
462 +            invocationCount++;
463 +            throw new CFException();
464 +        }
465 +    }
466 +
467 +    static final class CompletableFutureInc
468 +        implements Function<Integer, CompletableFuture<Integer>> {
469 +        final ExecutionMode m;
470 +        int invocationCount = 0;
471 +        CompletableFutureInc(ExecutionMode m) { this.m = m; }
472 +        public CompletableFuture<Integer> apply(Integer x) {
473 +            m.checkExecutionMode();
474 +            invocationCount++;
475 +            CompletableFuture<Integer> f = new CompletableFuture<>();
476 +            f.complete(inc(x));
477 +            return f;
478 +        }
479 +    }
480 +
481 +    static final class FailingCompletableFutureFunction
482 +        implements Function<Integer, CompletableFuture<Integer>> {
483 +        final ExecutionMode m;
484 +        int invocationCount = 0;
485 +        FailingCompletableFutureFunction(ExecutionMode m) { this.m = m; }
486 +        public CompletableFuture<Integer> apply(Integer x) {
487 +            m.checkExecutionMode();
488 +            invocationCount++;
489 +            throw new CFException();
490 +        }
491 +    }
492 +
493 +    // Used for explicit executor tests
494 +    static final class ThreadExecutor implements Executor {
495 +        final AtomicInteger count = new AtomicInteger(0);
496 +        static final ThreadGroup tg = new ThreadGroup("ThreadExecutor");
497 +        static boolean startedCurrentThread() {
498 +            return Thread.currentThread().getThreadGroup() == tg;
499 +        }
500 +
501 +        public void execute(Runnable r) {
502 +            count.getAndIncrement();
503 +            new Thread(tg, r).start();
504 +        }
505 +    }
506 +
507 +    /**
508 +     * Permits the testing of parallel code for the 3 different
509 +     * execution modes without copy/pasting all the test methods.
510 +     */
511 +    enum ExecutionMode {
512 +        DEFAULT {
513 +            public void checkExecutionMode() {
514 +                assertFalse(ThreadExecutor.startedCurrentThread());
515 +                assertNull(ForkJoinTask.getPool());
516 +            }
517 +            public CompletableFuture<Void> runAsync(Runnable a) {
518 +                throw new UnsupportedOperationException();
519 +            }
520 +            public <U> CompletableFuture<U> supplyAsync(Supplier<U> a) {
521 +                throw new UnsupportedOperationException();
522 +            }
523 +            public <T> CompletableFuture<Void> thenRun
524 +                (CompletableFuture<T> f, Runnable a) {
525 +                return f.thenRun(a);
526 +            }
527 +            public <T> CompletableFuture<Void> thenAccept
528 +                (CompletableFuture<T> f, Consumer<? super T> a) {
529 +                return f.thenAccept(a);
530 +            }
531 +            public <T,U> CompletableFuture<U> thenApply
532 +                (CompletableFuture<T> f, Function<? super T,U> a) {
533 +                return f.thenApply(a);
534 +            }
535 +            public <T,U> CompletableFuture<U> thenCompose
536 +                (CompletableFuture<T> f,
537 +                 Function<? super T,? extends CompletionStage<U>> a) {
538 +                return f.thenCompose(a);
539 +            }
540 +            public <T,U> CompletableFuture<U> handle
541 +                (CompletableFuture<T> f,
542 +                 BiFunction<? super T,Throwable,? extends U> a) {
543 +                return f.handle(a);
544 +            }
545 +            public <T> CompletableFuture<T> whenComplete
546 +                (CompletableFuture<T> f,
547 +                 BiConsumer<? super T,? super Throwable> a) {
548 +                return f.whenComplete(a);
549 +            }
550 +            public <T,U> CompletableFuture<Void> runAfterBoth
551 +                (CompletableFuture<T> f, CompletableFuture<U> g, Runnable a) {
552 +                return f.runAfterBoth(g, a);
553 +            }
554 +            public <T,U> CompletableFuture<Void> thenAcceptBoth
555 +                (CompletableFuture<T> f,
556 +                 CompletionStage<? extends U> g,
557 +                 BiConsumer<? super T,? super U> a) {
558 +                return f.thenAcceptBoth(g, a);
559 +            }
560 +            public <T,U,V> CompletableFuture<V> thenCombine
561 +                (CompletableFuture<T> f,
562 +                 CompletionStage<? extends U> g,
563 +                 BiFunction<? super T,? super U,? extends V> a) {
564 +                return f.thenCombine(g, a);
565 +            }
566 +            public <T> CompletableFuture<Void> runAfterEither
567 +                (CompletableFuture<T> f,
568 +                 CompletionStage<?> g,
569 +                 java.lang.Runnable a) {
570 +                return f.runAfterEither(g, a);
571 +            }
572 +            public <T> CompletableFuture<Void> acceptEither
573 +                (CompletableFuture<T> f,
574 +                 CompletionStage<? extends T> g,
575 +                 Consumer<? super T> a) {
576 +                return f.acceptEither(g, a);
577 +            }
578 +            public <T,U> CompletableFuture<U> applyToEither
579 +                (CompletableFuture<T> f,
580 +                 CompletionStage<? extends T> g,
581 +                 Function<? super T,U> a) {
582 +                return f.applyToEither(g, a);
583 +            }
584 +        },
585 +
586 +        ASYNC {
587 +            public void checkExecutionMode() {
588 +                assertSame(ForkJoinPool.commonPool(),
589 +                           ForkJoinTask.getPool());
590 +            }
591 +            public CompletableFuture<Void> runAsync(Runnable a) {
592 +                return CompletableFuture.runAsync(a);
593 +            }
594 +            public <U> CompletableFuture<U> supplyAsync(Supplier<U> a) {
595 +                return CompletableFuture.supplyAsync(a);
596 +            }
597 +            public <T> CompletableFuture<Void> thenRun
598 +                (CompletableFuture<T> f, Runnable a) {
599 +                return f.thenRunAsync(a);
600 +            }
601 +            public <T> CompletableFuture<Void> thenAccept
602 +                (CompletableFuture<T> f, Consumer<? super T> a) {
603 +                return f.thenAcceptAsync(a);
604 +            }
605 +            public <T,U> CompletableFuture<U> thenApply
606 +                (CompletableFuture<T> f, Function<? super T,U> a) {
607 +                return f.thenApplyAsync(a);
608 +            }
609 +            public <T,U> CompletableFuture<U> thenCompose
610 +                (CompletableFuture<T> f,
611 +                 Function<? super T,? extends CompletionStage<U>> a) {
612 +                return f.thenComposeAsync(a);
613 +            }
614 +            public <T,U> CompletableFuture<U> handle
615 +                (CompletableFuture<T> f,
616 +                 BiFunction<? super T,Throwable,? extends U> a) {
617 +                return f.handleAsync(a);
618 +            }
619 +            public <T> CompletableFuture<T> whenComplete
620 +                (CompletableFuture<T> f,
621 +                 BiConsumer<? super T,? super Throwable> a) {
622 +                return f.whenCompleteAsync(a);
623 +            }
624 +            public <T,U> CompletableFuture<Void> runAfterBoth
625 +                (CompletableFuture<T> f, CompletableFuture<U> g, Runnable a) {
626 +                return f.runAfterBothAsync(g, a);
627 +            }
628 +            public <T,U> CompletableFuture<Void> thenAcceptBoth
629 +                (CompletableFuture<T> f,
630 +                 CompletionStage<? extends U> g,
631 +                 BiConsumer<? super T,? super U> a) {
632 +                return f.thenAcceptBothAsync(g, a);
633 +            }
634 +            public <T,U,V> CompletableFuture<V> thenCombine
635 +                (CompletableFuture<T> f,
636 +                 CompletionStage<? extends U> g,
637 +                 BiFunction<? super T,? super U,? extends V> a) {
638 +                return f.thenCombineAsync(g, a);
639 +            }
640 +            public <T> CompletableFuture<Void> runAfterEither
641 +                (CompletableFuture<T> f,
642 +                 CompletionStage<?> g,
643 +                 java.lang.Runnable a) {
644 +                return f.runAfterEitherAsync(g, a);
645 +            }
646 +            public <T> CompletableFuture<Void> acceptEither
647 +                (CompletableFuture<T> f,
648 +                 CompletionStage<? extends T> g,
649 +                 Consumer<? super T> a) {
650 +                return f.acceptEitherAsync(g, a);
651 +            }
652 +            public <T,U> CompletableFuture<U> applyToEither
653 +                (CompletableFuture<T> f,
654 +                 CompletionStage<? extends T> g,
655 +                 Function<? super T,U> a) {
656 +                return f.applyToEitherAsync(g, a);
657 +            }
658 +        },
659 +
660 +        EXECUTOR {
661 +            public void checkExecutionMode() {
662 +                assertTrue(ThreadExecutor.startedCurrentThread());
663 +            }
664 +            public CompletableFuture<Void> runAsync(Runnable a) {
665 +                return CompletableFuture.runAsync(a, new ThreadExecutor());
666 +            }
667 +            public <U> CompletableFuture<U> supplyAsync(Supplier<U> a) {
668 +                return CompletableFuture.supplyAsync(a, new ThreadExecutor());
669 +            }
670 +            public <T> CompletableFuture<Void> thenRun
671 +                (CompletableFuture<T> f, Runnable a) {
672 +                return f.thenRunAsync(a, new ThreadExecutor());
673 +            }
674 +            public <T> CompletableFuture<Void> thenAccept
675 +                (CompletableFuture<T> f, Consumer<? super T> a) {
676 +                return f.thenAcceptAsync(a, new ThreadExecutor());
677 +            }
678 +            public <T,U> CompletableFuture<U> thenApply
679 +                (CompletableFuture<T> f, Function<? super T,U> a) {
680 +                return f.thenApplyAsync(a, new ThreadExecutor());
681 +            }
682 +            public <T,U> CompletableFuture<U> thenCompose
683 +                (CompletableFuture<T> f,
684 +                 Function<? super T,? extends CompletionStage<U>> a) {
685 +                return f.thenComposeAsync(a, new ThreadExecutor());
686 +            }
687 +            public <T,U> CompletableFuture<U> handle
688 +                (CompletableFuture<T> f,
689 +                 BiFunction<? super T,Throwable,? extends U> a) {
690 +                return f.handleAsync(a, new ThreadExecutor());
691 +            }
692 +            public <T> CompletableFuture<T> whenComplete
693 +                (CompletableFuture<T> f,
694 +                 BiConsumer<? super T,? super Throwable> a) {
695 +                return f.whenCompleteAsync(a, new ThreadExecutor());
696 +            }
697 +            public <T,U> CompletableFuture<Void> runAfterBoth
698 +                (CompletableFuture<T> f, CompletableFuture<U> g, Runnable a) {
699 +                return f.runAfterBothAsync(g, a, new ThreadExecutor());
700 +            }
701 +            public <T,U> CompletableFuture<Void> thenAcceptBoth
702 +                (CompletableFuture<T> f,
703 +                 CompletionStage<? extends U> g,
704 +                 BiConsumer<? super T,? super U> a) {
705 +                return f.thenAcceptBothAsync(g, a, new ThreadExecutor());
706 +            }
707 +            public <T,U,V> CompletableFuture<V> thenCombine
708 +                (CompletableFuture<T> f,
709 +                 CompletionStage<? extends U> g,
710 +                 BiFunction<? super T,? super U,? extends V> a) {
711 +                return f.thenCombineAsync(g, a, new ThreadExecutor());
712 +            }
713 +            public <T> CompletableFuture<Void> runAfterEither
714 +                (CompletableFuture<T> f,
715 +                 CompletionStage<?> g,
716 +                 java.lang.Runnable a) {
717 +                return f.runAfterEitherAsync(g, a, new ThreadExecutor());
718 +            }
719 +            public <T> CompletableFuture<Void> acceptEither
720 +                (CompletableFuture<T> f,
721 +                 CompletionStage<? extends T> g,
722 +                 Consumer<? super T> a) {
723 +                return f.acceptEitherAsync(g, a, new ThreadExecutor());
724 +            }
725 +            public <T,U> CompletableFuture<U> applyToEither
726 +                (CompletableFuture<T> f,
727 +                 CompletionStage<? extends T> g,
728 +                 Function<? super T,U> a) {
729 +                return f.applyToEitherAsync(g, a, new ThreadExecutor());
730 +            }
731 +        };
732 +
733 +        public abstract void checkExecutionMode();
734 +        public abstract CompletableFuture<Void> runAsync(Runnable a);
735 +        public abstract <U> CompletableFuture<U> supplyAsync(Supplier<U> a);
736 +        public abstract <T> CompletableFuture<Void> thenRun
737 +            (CompletableFuture<T> f, Runnable a);
738 +        public abstract <T> CompletableFuture<Void> thenAccept
739 +            (CompletableFuture<T> f, Consumer<? super T> a);
740 +        public abstract <T,U> CompletableFuture<U> thenApply
741 +            (CompletableFuture<T> f, Function<? super T,U> a);
742 +        public abstract <T,U> CompletableFuture<U> thenCompose
743 +            (CompletableFuture<T> f,
744 +             Function<? super T,? extends CompletionStage<U>> a);
745 +        public abstract <T,U> CompletableFuture<U> handle
746 +            (CompletableFuture<T> f,
747 +             BiFunction<? super T,Throwable,? extends U> a);
748 +        public abstract <T> CompletableFuture<T> whenComplete
749 +            (CompletableFuture<T> f,
750 +             BiConsumer<? super T,? super Throwable> a);
751 +        public abstract <T,U> CompletableFuture<Void> runAfterBoth
752 +            (CompletableFuture<T> f, CompletableFuture<U> g, Runnable a);
753 +        public abstract <T,U> CompletableFuture<Void> thenAcceptBoth
754 +            (CompletableFuture<T> f,
755 +             CompletionStage<? extends U> g,
756 +             BiConsumer<? super T,? super U> a);
757 +        public abstract <T,U,V> CompletableFuture<V> thenCombine
758 +            (CompletableFuture<T> f,
759 +             CompletionStage<? extends U> g,
760 +             BiFunction<? super T,? super U,? extends V> a);
761 +        public abstract <T> CompletableFuture<Void> runAfterEither
762 +            (CompletableFuture<T> f,
763 +             CompletionStage<?> g,
764 +             java.lang.Runnable a);
765 +        public abstract <T> CompletableFuture<Void> acceptEither
766 +            (CompletableFuture<T> f,
767 +             CompletionStage<? extends T> g,
768 +             Consumer<? super T> a);
769 +        public abstract <T,U> CompletableFuture<U> applyToEither
770 +            (CompletableFuture<T> f,
771 +             CompletionStage<? extends T> g,
772 +             Function<? super T,U> a);
773 +    }
774 +
775 +    /**
776 +     * exceptionally action is not invoked when source completes
777 +     * normally, and source result is propagated
778 +     */
779 +    public void testExceptionally_normalCompletion() {
780 +        for (boolean createIncomplete : new boolean[] { true, false })
781 +        for (Integer v1 : new Integer[] { 1, null })
782 +    {
783 +        final AtomicInteger a = new AtomicInteger(0);
784 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
785 +        if (!createIncomplete) f.complete(v1);
786 +        final CompletableFuture<Integer> g = f.exceptionally
787 +            ((Throwable t) -> {
788 +                // Should not be called
789 +                a.getAndIncrement();
790 +                throw new AssertionError();
791 +            });
792 +        if (createIncomplete) f.complete(v1);
793 +
794 +        checkCompletedNormally(g, v1);
795 +        checkCompletedNormally(f, v1);
796 +        assertEquals(0, a.get());
797 +    }}
798 +
799 +
800 +    /**
801 +     * exceptionally action completes with function value on source
802 +     * exception
803 +     */
804 +    public void testExceptionally_exceptionalCompletion() {
805 +        for (boolean createIncomplete : new boolean[] { true, false })
806 +        for (Integer v1 : new Integer[] { 1, null })
807 +    {
808 +        final AtomicInteger a = new AtomicInteger(0);
809 +        final CFException ex = new CFException();
810 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
811 +        if (!createIncomplete) f.completeExceptionally(ex);
812 +        final CompletableFuture<Integer> g = f.exceptionally
813 +            ((Throwable t) -> {
814 +                ExecutionMode.DEFAULT.checkExecutionMode();
815 +                threadAssertSame(t, ex);
816 +                a.getAndIncrement();
817 +                return v1;
818 +            });
819 +        if (createIncomplete) f.completeExceptionally(ex);
820 +
821 +        checkCompletedNormally(g, v1);
822 +        assertEquals(1, a.get());
823 +    }}
824 +
825 +    public void testExceptionally_exceptionalCompletionActionFailed() {
826 +        for (boolean createIncomplete : new boolean[] { true, false })
827 +        for (Integer v1 : new Integer[] { 1, null })
828 +    {
829 +        final AtomicInteger a = new AtomicInteger(0);
830 +        final CFException ex1 = new CFException();
831 +        final CFException ex2 = new CFException();
832 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
833 +        if (!createIncomplete) f.completeExceptionally(ex1);
834 +        final CompletableFuture<Integer> g = f.exceptionally
835 +            ((Throwable t) -> {
836 +                ExecutionMode.DEFAULT.checkExecutionMode();
837 +                threadAssertSame(t, ex1);
838 +                a.getAndIncrement();
839 +                throw ex2;
840 +            });
841 +        if (createIncomplete) f.completeExceptionally(ex1);
842 +
843 +        checkCompletedWithWrappedCFException(g, ex2);
844 +        assertEquals(1, a.get());
845 +    }}
846 +
847 +    /**
848 +     * handle action completes normally with function value on normal
849 +     * completion of source
850 +     */
851 +    public void testHandle_normalCompletion() {
852 +        for (ExecutionMode m : ExecutionMode.values())
853 +        for (boolean createIncomplete : new boolean[] { true, false })
854 +        for (Integer v1 : new Integer[] { 1, null })
855 +    {
856 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
857 +        final AtomicInteger a = new AtomicInteger(0);
858 +        if (!createIncomplete) f.complete(v1);
859 +        final CompletableFuture<Integer> g = m.handle
860 +            (f,
861 +             (Integer x, Throwable t) -> {
862 +                m.checkExecutionMode();
863 +                threadAssertSame(x, v1);
864 +                threadAssertNull(t);
865 +                a.getAndIncrement();
866 +                return inc(v1);
867 +            });
868 +        if (createIncomplete) f.complete(v1);
869 +
870 +        checkCompletedNormally(g, inc(v1));
871 +        checkCompletedNormally(f, v1);
872 +        assertEquals(1, a.get());
873 +    }}
874 +
875 +    /**
876 +     * handle action completes normally with function value on
877 +     * exceptional completion of source
878 +     */
879 +    public void testHandle_exceptionalCompletion() {
880 +        for (ExecutionMode m : ExecutionMode.values())
881 +        for (boolean createIncomplete : new boolean[] { true, false })
882 +        for (Integer v1 : new Integer[] { 1, null })
883 +    {
884 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
885 +        final AtomicInteger a = new AtomicInteger(0);
886 +        final CFException ex = new CFException();
887 +        if (!createIncomplete) f.completeExceptionally(ex);
888 +        final CompletableFuture<Integer> g = m.handle
889 +            (f,
890 +             (Integer x, Throwable t) -> {
891 +                m.checkExecutionMode();
892 +                threadAssertNull(x);
893 +                threadAssertSame(t, ex);
894 +                a.getAndIncrement();
895 +                return v1;
896 +            });
897 +        if (createIncomplete) f.completeExceptionally(ex);
898 +
899 +        checkCompletedNormally(g, v1);
900 +        checkCompletedWithWrappedCFException(f, ex);
901 +        assertEquals(1, a.get());
902 +    }}
903 +
904 +    /**
905 +     * handle action completes normally with function value on
906 +     * cancelled source
907 +     */
908 +    public void testHandle_sourceCancelled() {
909 +        for (ExecutionMode m : ExecutionMode.values())
910 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
911 +        for (boolean createIncomplete : new boolean[] { true, false })
912 +        for (Integer v1 : new Integer[] { 1, null })
913 +    {
914 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
915 +        final AtomicInteger a = new AtomicInteger(0);
916 +        if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
917 +        final CompletableFuture<Integer> g = m.handle
918 +            (f,
919 +             (Integer x, Throwable t) -> {
920 +                m.checkExecutionMode();
921 +                threadAssertNull(x);
922 +                threadAssertTrue(t instanceof CancellationException);
923 +                a.getAndIncrement();
924 +                return v1;
925 +            });
926 +        if (createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
927 +
928 +        checkCompletedNormally(g, v1);
929 +        checkCancelled(f);
930 +        assertEquals(1, a.get());
931 +    }}
932 +
933 +    /**
934 +     * handle result completes exceptionally if action does
935 +     */
936 +    public void testHandle_sourceFailedActionFailed() {
937 +        for (ExecutionMode m : ExecutionMode.values())
938 +        for (boolean createIncomplete : new boolean[] { true, false })
939 +    {
940 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
941 +        final AtomicInteger a = new AtomicInteger(0);
942 +        final CFException ex1 = new CFException();
943 +        final CFException ex2 = new CFException();
944 +        if (!createIncomplete) f.completeExceptionally(ex1);
945 +        final CompletableFuture<Integer> g = m.handle
946 +            (f,
947 +             (Integer x, Throwable t) -> {
948 +                m.checkExecutionMode();
949 +                threadAssertNull(x);
950 +                threadAssertSame(ex1, t);
951 +                a.getAndIncrement();
952 +                throw ex2;
953 +            });
954 +        if (createIncomplete) f.completeExceptionally(ex1);
955 +
956 +        checkCompletedWithWrappedCFException(g, ex2);
957 +        checkCompletedWithWrappedCFException(f, ex1);
958 +        assertEquals(1, a.get());
959 +    }}
960 +
961 +    public void testHandle_sourceCompletedNormallyActionFailed() {
962 +        for (ExecutionMode m : ExecutionMode.values())
963 +        for (boolean createIncomplete : new boolean[] { true, false })
964 +        for (Integer v1 : new Integer[] { 1, null })
965 +    {
966 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
967 +        final AtomicInteger a = new AtomicInteger(0);
968 +        final CFException ex = new CFException();
969 +        if (!createIncomplete) f.complete(v1);
970 +        final CompletableFuture<Integer> g = m.handle
971 +            (f,
972 +             (Integer x, Throwable t) -> {
973 +                m.checkExecutionMode();
974 +                threadAssertSame(x, v1);
975 +                threadAssertNull(t);
976 +                a.getAndIncrement();
977 +                throw ex;
978 +            });
979 +        if (createIncomplete) f.complete(v1);
980 +
981 +        checkCompletedWithWrappedCFException(g, ex);
982 +        checkCompletedNormally(f, v1);
983 +        assertEquals(1, a.get());
984 +    }}
985 +
986 +    /**
987 +     * runAsync completes after running Runnable
988 +     */
989 +    public void testRunAsync_normalCompletion() {
990 +        ExecutionMode[] executionModes = {
991 +            ExecutionMode.ASYNC,
992 +            ExecutionMode.EXECUTOR,
993 +        };
994 +        for (ExecutionMode m : executionModes)
995 +    {
996 +        final Noop r = new Noop(m);
997 +        final CompletableFuture<Void> f = m.runAsync(r);
998 +        assertNull(f.join());
999 +        checkCompletedNormally(f, null);
1000 +        assertEquals(1, r.invocationCount);
1001 +    }}
1002 +
1003 +    /**
1004 +     * failing runAsync completes exceptionally after running Runnable
1005 +     */
1006 +    public void testRunAsync_exceptionalCompletion() {
1007 +        ExecutionMode[] executionModes = {
1008 +            ExecutionMode.ASYNC,
1009 +            ExecutionMode.EXECUTOR,
1010 +        };
1011 +        for (ExecutionMode m : executionModes)
1012 +    {
1013 +        final FailingRunnable r = new FailingRunnable(m);
1014 +        final CompletableFuture<Void> f = m.runAsync(r);
1015 +        checkCompletedWithWrappedCFException(f);
1016 +        assertEquals(1, r.invocationCount);
1017 +    }}
1018 +
1019 +    /**
1020 +     * supplyAsync completes with result of supplier
1021 +     */
1022 +    public void testSupplyAsync_normalCompletion() {
1023 +        ExecutionMode[] executionModes = {
1024 +            ExecutionMode.ASYNC,
1025 +            ExecutionMode.EXECUTOR,
1026 +        };
1027 +        for (ExecutionMode m : executionModes)
1028 +        for (Integer v1 : new Integer[] { 1, null })
1029 +    {
1030 +        final IntegerSupplier r = new IntegerSupplier(m, v1);
1031 +        final CompletableFuture<Integer> f = m.supplyAsync(r);
1032 +        assertSame(v1, f.join());
1033 +        checkCompletedNormally(f, v1);
1034 +        assertEquals(1, r.invocationCount);
1035 +    }}
1036 +
1037 +    /**
1038 +     * Failing supplyAsync completes exceptionally
1039 +     */
1040 +    public void testSupplyAsync_exceptionalCompletion() {
1041 +        ExecutionMode[] executionModes = {
1042 +            ExecutionMode.ASYNC,
1043 +            ExecutionMode.EXECUTOR,
1044 +        };
1045 +        for (ExecutionMode m : executionModes)
1046 +    {
1047 +        FailingSupplier r = new FailingSupplier(m);
1048 +        CompletableFuture<Integer> f = m.supplyAsync(r);
1049 +        checkCompletedWithWrappedCFException(f);
1050 +        assertEquals(1, r.invocationCount);
1051 +    }}
1052 +
1053 +    // seq completion methods
1054 +
1055 +    /**
1056 +     * thenRun result completes normally after normal completion of source
1057 +     */
1058 +    public void testThenRun_normalCompletion() {
1059 +        for (ExecutionMode m : ExecutionMode.values())
1060 +        for (boolean createIncomplete : new boolean[] { true, false })
1061 +        for (Integer v1 : new Integer[] { 1, null })
1062 +    {
1063 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1064 +        final Noop r = new Noop(m);
1065 +        if (!createIncomplete) f.complete(v1);
1066 +        final CompletableFuture<Void> g = m.thenRun(f, r);
1067 +        if (createIncomplete) {
1068 +            checkIncomplete(g);
1069 +            f.complete(v1);
1070 +        }
1071 +
1072 +        checkCompletedNormally(g, null);
1073 +        checkCompletedNormally(f, v1);
1074 +        assertEquals(1, r.invocationCount);
1075 +    }}
1076 +
1077 +    /**
1078 +     * thenRun result completes exceptionally after exceptional
1079 +     * completion of source
1080 +     */
1081 +    public void testThenRun_exceptionalCompletion() {
1082 +        for (ExecutionMode m : ExecutionMode.values())
1083 +        for (boolean createIncomplete : new boolean[] { true, false })
1084 +    {
1085 +        final CFException ex = new CFException();
1086 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1087 +        final Noop r = new Noop(m);
1088 +        if (!createIncomplete) f.completeExceptionally(ex);
1089 +        final CompletableFuture<Void> g = m.thenRun(f, r);
1090 +        if (createIncomplete) {
1091 +            checkIncomplete(g);
1092 +            f.completeExceptionally(ex);
1093 +        }
1094 +
1095 +        checkCompletedWithWrappedCFException(g, ex);
1096 +        checkCompletedWithWrappedCFException(f, ex);
1097 +        assertEquals(0, r.invocationCount);
1098 +    }}
1099 +
1100 +    /**
1101 +     * thenRun result completes exceptionally if source cancelled
1102 +     */
1103 +    public void testThenRun_sourceCancelled() {
1104 +        for (ExecutionMode m : ExecutionMode.values())
1105 +        for (boolean createIncomplete : new boolean[] { true, false })
1106 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1107 +    {
1108 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1109 +        final Noop r = new Noop(m);
1110 +        if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
1111 +        final CompletableFuture<Void> g = m.thenRun(f, r);
1112 +        if (createIncomplete) {
1113 +            checkIncomplete(g);
1114 +            assertTrue(f.cancel(mayInterruptIfRunning));
1115 +        }
1116 +
1117 +        checkCompletedWithWrappedCancellationException(g);
1118 +        checkCancelled(f);
1119 +        assertEquals(0, r.invocationCount);
1120 +    }}
1121 +
1122 +    /**
1123 +     * thenRun result completes exceptionally if action does
1124 +     */
1125 +    public void testThenRun_actionFailed() {
1126 +        for (ExecutionMode m : ExecutionMode.values())
1127 +        for (boolean createIncomplete : new boolean[] { true, false })
1128 +        for (Integer v1 : new Integer[] { 1, null })
1129 +    {
1130 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1131 +        final FailingRunnable r = new FailingRunnable(m);
1132 +        if (!createIncomplete) f.complete(v1);
1133 +        final CompletableFuture<Void> g = m.thenRun(f, r);
1134 +        if (createIncomplete) {
1135 +            checkIncomplete(g);
1136 +            f.complete(v1);
1137 +        }
1138 +
1139 +        checkCompletedWithWrappedCFException(g);
1140 +        checkCompletedNormally(f, v1);
1141 +    }}
1142 +
1143 +    /**
1144 +     * thenApply result completes normally after normal completion of source
1145 +     */
1146 +    public void testThenApply_normalCompletion() {
1147 +        for (ExecutionMode m : ExecutionMode.values())
1148 +        for (boolean createIncomplete : new boolean[] { true, false })
1149 +        for (Integer v1 : new Integer[] { 1, null })
1150 +    {
1151 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1152 +        final IncFunction r = new IncFunction(m);
1153 +        if (!createIncomplete) f.complete(v1);
1154 +        final CompletableFuture<Integer> g = m.thenApply(f, r);
1155 +        if (createIncomplete) {
1156 +            checkIncomplete(g);
1157 +            f.complete(v1);
1158 +        }
1159 +
1160 +        checkCompletedNormally(g, inc(v1));
1161 +        checkCompletedNormally(f, v1);
1162 +        assertEquals(1, r.invocationCount);
1163 +    }}
1164 +
1165 +    /**
1166 +     * thenApply result completes exceptionally after exceptional
1167 +     * completion of source
1168 +     */
1169 +    public void testThenApply_exceptionalCompletion() {
1170 +        for (ExecutionMode m : ExecutionMode.values())
1171 +        for (boolean createIncomplete : new boolean[] { true, false })
1172 +    {
1173 +        final CFException ex = new CFException();
1174 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1175 +        final IncFunction r = new IncFunction(m);
1176 +        if (!createIncomplete) f.completeExceptionally(ex);
1177 +        final CompletableFuture<Integer> g = m.thenApply(f, r);
1178 +        if (createIncomplete) {
1179 +            checkIncomplete(g);
1180 +            f.completeExceptionally(ex);
1181 +        }
1182 +
1183 +        checkCompletedWithWrappedCFException(g, ex);
1184 +        checkCompletedWithWrappedCFException(f, ex);
1185 +        assertEquals(0, r.invocationCount);
1186 +    }}
1187 +
1188 +    /**
1189 +     * thenApply result completes exceptionally if source cancelled
1190 +     */
1191 +    public void testThenApply_sourceCancelled() {
1192 +        for (ExecutionMode m : ExecutionMode.values())
1193 +        for (boolean createIncomplete : new boolean[] { true, false })
1194 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1195 +    {
1196 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1197 +        final IncFunction r = new IncFunction(m);
1198 +        if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
1199 +        final CompletableFuture<Integer> g = m.thenApply(f, r);
1200 +        if (createIncomplete) {
1201 +            checkIncomplete(g);
1202 +            assertTrue(f.cancel(mayInterruptIfRunning));
1203 +        }
1204 +
1205 +        checkCompletedWithWrappedCancellationException(g);
1206 +        checkCancelled(f);
1207 +        assertEquals(0, r.invocationCount);
1208 +    }}
1209 +
1210 +    /**
1211 +     * thenApply result completes exceptionally if action does
1212 +     */
1213 +    public void testThenApply_actionFailed() {
1214 +        for (ExecutionMode m : ExecutionMode.values())
1215 +        for (boolean createIncomplete : new boolean[] { true, false })
1216 +        for (Integer v1 : new Integer[] { 1, null })
1217 +    {
1218 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1219 +        final FailingFunction r = new FailingFunction(m);
1220 +        if (!createIncomplete) f.complete(v1);
1221 +        final CompletableFuture<Integer> g = m.thenApply(f, r);
1222 +        if (createIncomplete) {
1223 +            checkIncomplete(g);
1224 +            f.complete(v1);
1225 +        }
1226 +
1227 +        checkCompletedWithWrappedCFException(g);
1228 +        checkCompletedNormally(f, v1);
1229 +    }}
1230 +
1231 +    /**
1232 +     * thenAccept result completes normally after normal completion of source
1233 +     */
1234 +    public void testThenAccept_normalCompletion() {
1235 +        for (ExecutionMode m : ExecutionMode.values())
1236 +        for (boolean createIncomplete : new boolean[] { true, false })
1237 +        for (Integer v1 : new Integer[] { 1, null })
1238 +    {
1239 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1240 +        final IncAction r = new IncAction();
1241 +        if (!createIncomplete) f.complete(v1);
1242 +        final CompletableFuture<Void> g = m.thenAccept(f, r);
1243 +        if (createIncomplete) {
1244 +            checkIncomplete(g);
1245 +            f.complete(v1);
1246 +        }
1247 +
1248 +        checkCompletedNormally(g, null);
1249 +        checkCompletedNormally(f, v1);
1250 +        assertEquals(1, r.invocationCount);
1251 +        assertEquals(inc(v1), r.value);
1252 +    }}
1253 +
1254 +    /**
1255 +     * thenAccept result completes exceptionally after exceptional
1256 +     * completion of source
1257 +     */
1258 +    public void testThenAccept_exceptionalCompletion() {
1259 +        for (ExecutionMode m : ExecutionMode.values())
1260 +        for (boolean createIncomplete : new boolean[] { true, false })
1261 +    {
1262 +        final CFException ex = new CFException();
1263 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1264 +        final IncAction r = new IncAction();
1265 +        if (!createIncomplete) f.completeExceptionally(ex);
1266 +        final CompletableFuture<Void> g = m.thenAccept(f, r);
1267 +        if (createIncomplete) {
1268 +            checkIncomplete(g);
1269 +            f.completeExceptionally(ex);
1270 +        }
1271 +
1272 +        checkCompletedWithWrappedCFException(g, ex);
1273 +        checkCompletedWithWrappedCFException(f, ex);
1274 +        assertEquals(0, r.invocationCount);
1275 +    }}
1276 +
1277 +    /**
1278 +     * thenAccept result completes exceptionally if source cancelled
1279 +     */
1280 +    public void testThenAccept_sourceCancelled() {
1281 +        for (ExecutionMode m : ExecutionMode.values())
1282 +        for (boolean createIncomplete : new boolean[] { true, false })
1283 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1284 +    {
1285 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1286 +        final IncAction r = new IncAction();
1287 +        if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
1288 +        final CompletableFuture<Void> g = m.thenAccept(f, r);
1289 +        if (createIncomplete) {
1290 +            checkIncomplete(g);
1291 +            assertTrue(f.cancel(mayInterruptIfRunning));
1292 +        }
1293 +
1294 +        checkCompletedWithWrappedCancellationException(g);
1295 +        checkCancelled(f);
1296 +        assertEquals(0, r.invocationCount);
1297 +    }}
1298 +
1299 +    /**
1300 +     * thenAccept result completes exceptionally if action does
1301 +     */
1302 +    public void testThenAccept_actionFailed() {
1303 +        for (ExecutionMode m : ExecutionMode.values())
1304 +        for (boolean createIncomplete : new boolean[] { true, false })
1305 +        for (Integer v1 : new Integer[] { 1, null })
1306 +    {
1307 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1308 +        final FailingConsumer r = new FailingConsumer(m);
1309 +        if (!createIncomplete) f.complete(v1);
1310 +        final CompletableFuture<Void> g = m.thenAccept(f, r);
1311 +        if (createIncomplete) {
1312 +            checkIncomplete(g);
1313 +            f.complete(v1);
1314 +        }
1315 +
1316 +        checkCompletedWithWrappedCFException(g);
1317 +        checkCompletedNormally(f, v1);
1318 +    }}
1319 +
1320 +    /**
1321 +     * thenCombine result completes normally after normal completion
1322 +     * of sources
1323 +     */
1324 +    public void testThenCombine_normalCompletion() {
1325 +        for (ExecutionMode m : ExecutionMode.values())
1326 +        for (boolean createIncomplete : new boolean[] { true, false })
1327 +        for (boolean fFirst : new boolean[] { true, false })
1328 +        for (Integer v1 : new Integer[] { 1, null })
1329 +        for (Integer v2 : new Integer[] { 2, null })
1330 +    {
1331 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1332 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1333 +        final SubtractFunction r = new SubtractFunction(m);
1334 +
1335 +        if (fFirst) f.complete(v1); else g.complete(v2);
1336 +        if (!createIncomplete)
1337 +            if (!fFirst) f.complete(v1); else g.complete(v2);
1338 +        final CompletableFuture<Integer> h = m.thenCombine(f, g, r);
1339 +        if (createIncomplete) {
1340 +            checkIncomplete(h);
1341 +            assertEquals(0, r.invocationCount);
1342 +            if (!fFirst) f.complete(v1); else g.complete(v2);
1343 +        }
1344 +
1345 +        checkCompletedNormally(h, subtract(v1, v2));
1346 +        checkCompletedNormally(f, v1);
1347 +        checkCompletedNormally(g, v2);
1348 +        assertEquals(1, r.invocationCount);
1349 +    }}
1350 +
1351 +    /**
1352 +     * thenCombine result completes exceptionally after exceptional
1353 +     * completion of either source
1354 +     */
1355 +    public void testThenCombine_exceptionalCompletion() {
1356 +        for (ExecutionMode m : ExecutionMode.values())
1357 +        for (boolean createIncomplete : new boolean[] { true, false })
1358 +        for (boolean fFirst : new boolean[] { true, false })
1359 +        for (Integer v1 : new Integer[] { 1, null })
1360 +    {
1361 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1362 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1363 +        final CFException ex = new CFException();
1364 +        final SubtractFunction r = new SubtractFunction(m);
1365 +
1366 +        (fFirst ? f : g).complete(v1);
1367 +        if (!createIncomplete)
1368 +            (!fFirst ? f : g).completeExceptionally(ex);
1369 +        final CompletableFuture<Integer> h = m.thenCombine(f, g, r);
1370 +        if (createIncomplete) {
1371 +            checkIncomplete(h);
1372 +            (!fFirst ? f : g).completeExceptionally(ex);
1373 +        }
1374 +
1375 +        checkCompletedWithWrappedCFException(h, ex);
1376 +        assertEquals(0, r.invocationCount);
1377 +        checkCompletedNormally(fFirst ? f : g, v1);
1378 +        checkCompletedWithWrappedCFException(!fFirst ? f : g, ex);
1379 +    }}
1380 +
1381 +    /**
1382 +     * thenCombine result completes exceptionally if either source cancelled
1383 +     */
1384 +    public void testThenCombine_sourceCancelled() {
1385 +        for (ExecutionMode m : ExecutionMode.values())
1386 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1387 +        for (boolean createIncomplete : new boolean[] { true, false })
1388 +        for (boolean fFirst : new boolean[] { true, false })
1389 +        for (Integer v1 : new Integer[] { 1, null })
1390 +    {
1391 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1392 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1393 +        final SubtractFunction r = new SubtractFunction(m);
1394 +
1395 +        (fFirst ? f : g).complete(v1);
1396 +        if (!createIncomplete)
1397 +            assertTrue((!fFirst ? f : g).cancel(mayInterruptIfRunning));
1398 +        final CompletableFuture<Integer> h = m.thenCombine(f, g, r);
1399 +        if (createIncomplete) {
1400 +            checkIncomplete(h);
1401 +            assertTrue((!fFirst ? f : g).cancel(mayInterruptIfRunning));
1402 +        }
1403 +
1404 +        checkCompletedWithWrappedCancellationException(h);
1405 +        checkCancelled(!fFirst ? f : g);
1406 +        assertEquals(0, r.invocationCount);
1407 +        checkCompletedNormally(fFirst ? f : g, v1);
1408 +    }}
1409 +
1410 +    /**
1411 +     * thenCombine result completes exceptionally if action does
1412 +     */
1413 +    public void testThenCombine_actionFailed() {
1414 +        for (ExecutionMode m : ExecutionMode.values())
1415 +        for (boolean fFirst : new boolean[] { true, false })
1416 +        for (Integer v1 : new Integer[] { 1, null })
1417 +        for (Integer v2 : new Integer[] { 2, null })
1418 +    {
1419 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1420 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1421 +        final FailingBiFunction r = new FailingBiFunction(m);
1422 +        final CompletableFuture<Integer> h = m.thenCombine(f, g, r);
1423 +
1424 +        if (fFirst) {
1425 +            f.complete(v1);
1426 +            g.complete(v2);
1427 +        } else {
1428 +            g.complete(v2);
1429 +            f.complete(v1);
1430 +        }
1431 +
1432 +        checkCompletedWithWrappedCFException(h);
1433 +        checkCompletedNormally(f, v1);
1434 +        checkCompletedNormally(g, v2);
1435 +    }}
1436 +
1437 +    /**
1438 +     * thenAcceptBoth result completes normally after normal
1439 +     * completion of sources
1440 +     */
1441 +    public void testThenAcceptBoth_normalCompletion() {
1442 +        for (ExecutionMode m : ExecutionMode.values())
1443 +        for (boolean createIncomplete : new boolean[] { true, false })
1444 +        for (boolean fFirst : new boolean[] { true, false })
1445 +        for (Integer v1 : new Integer[] { 1, null })
1446 +        for (Integer v2 : new Integer[] { 2, null })
1447 +    {
1448 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1449 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1450 +        final SubtractAction r = new SubtractAction(m);
1451 +
1452 +        if (fFirst) f.complete(v1); else g.complete(v2);
1453 +        if (!createIncomplete)
1454 +            if (!fFirst) f.complete(v1); else g.complete(v2);
1455 +        final CompletableFuture<Void> h = m.thenAcceptBoth(f, g, r);
1456 +        if (createIncomplete) {
1457 +            checkIncomplete(h);
1458 +            assertEquals(0, r.invocationCount);
1459 +            if (!fFirst) f.complete(v1); else g.complete(v2);
1460 +        }
1461 +
1462 +        checkCompletedNormally(h, null);
1463 +        assertEquals(subtract(v1, v2), r.value);
1464 +        checkCompletedNormally(f, v1);
1465 +        checkCompletedNormally(g, v2);
1466 +    }}
1467 +
1468 +    /**
1469 +     * thenAcceptBoth result completes exceptionally after exceptional
1470 +     * completion of either source
1471 +     */
1472 +    public void testThenAcceptBoth_exceptionalCompletion() {
1473 +        for (ExecutionMode m : ExecutionMode.values())
1474 +        for (boolean createIncomplete : new boolean[] { true, false })
1475 +        for (boolean fFirst : new boolean[] { true, false })
1476 +        for (Integer v1 : new Integer[] { 1, null })
1477 +    {
1478 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1479 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1480 +        final CFException ex = new CFException();
1481 +        final SubtractAction r = new SubtractAction(m);
1482 +
1483 +        (fFirst ? f : g).complete(v1);
1484 +        if (!createIncomplete)
1485 +            (!fFirst ? f : g).completeExceptionally(ex);
1486 +        final CompletableFuture<Void> h = m.thenAcceptBoth(f, g, r);
1487 +        if (createIncomplete) {
1488 +            checkIncomplete(h);
1489 +            (!fFirst ? f : g).completeExceptionally(ex);
1490 +        }
1491 +
1492 +        checkCompletedWithWrappedCFException(h, ex);
1493 +        assertEquals(0, r.invocationCount);
1494 +        checkCompletedNormally(fFirst ? f : g, v1);
1495 +        checkCompletedWithWrappedCFException(!fFirst ? f : g, ex);
1496 +    }}
1497 +
1498 +    /**
1499 +     * thenAcceptBoth result completes exceptionally if either source cancelled
1500 +     */
1501 +    public void testThenAcceptBoth_sourceCancelled() {
1502 +        for (ExecutionMode m : ExecutionMode.values())
1503 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1504 +        for (boolean createIncomplete : new boolean[] { true, false })
1505 +        for (boolean fFirst : new boolean[] { true, false })
1506 +        for (Integer v1 : new Integer[] { 1, null })
1507 +    {
1508 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1509 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1510 +        final SubtractAction r = new SubtractAction(m);
1511 +
1512 +        (fFirst ? f : g).complete(v1);
1513 +        if (!createIncomplete)
1514 +            assertTrue((!fFirst ? f : g).cancel(mayInterruptIfRunning));
1515 +        final CompletableFuture<Void> h = m.thenAcceptBoth(f, g, r);
1516 +        if (createIncomplete) {
1517 +            checkIncomplete(h);
1518 +            assertTrue((!fFirst ? f : g).cancel(mayInterruptIfRunning));
1519 +        }
1520 +
1521 +        checkCompletedWithWrappedCancellationException(h);
1522 +        checkCancelled(!fFirst ? f : g);
1523 +        assertEquals(0, r.invocationCount);
1524 +        checkCompletedNormally(fFirst ? f : g, v1);
1525 +    }}
1526 +
1527 +    /**
1528 +     * thenAcceptBoth result completes exceptionally if action does
1529 +     */
1530 +    public void testThenAcceptBoth_actionFailed() {
1531 +        for (ExecutionMode m : ExecutionMode.values())
1532 +        for (boolean fFirst : new boolean[] { true, false })
1533 +        for (Integer v1 : new Integer[] { 1, null })
1534 +        for (Integer v2 : new Integer[] { 2, null })
1535 +    {
1536 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1537 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1538 +        final FailingBiConsumer r = new FailingBiConsumer(m);
1539 +        final CompletableFuture<Void> h = m.thenAcceptBoth(f, g, r);
1540 +
1541 +        if (fFirst) {
1542 +            f.complete(v1);
1543 +            g.complete(v2);
1544 +        } else {
1545 +            g.complete(v2);
1546 +            f.complete(v1);
1547 +        }
1548 +
1549 +        checkCompletedWithWrappedCFException(h);
1550 +        checkCompletedNormally(f, v1);
1551 +        checkCompletedNormally(g, v2);
1552 +    }}
1553 +
1554 +    /**
1555 +     * runAfterBoth result completes normally after normal
1556 +     * completion of sources
1557 +     */
1558 +    public void testRunAfterBoth_normalCompletion() {
1559 +        for (ExecutionMode m : ExecutionMode.values())
1560 +        for (boolean createIncomplete : new boolean[] { true, false })
1561 +        for (boolean fFirst : new boolean[] { true, false })
1562 +        for (Integer v1 : new Integer[] { 1, null })
1563 +        for (Integer v2 : new Integer[] { 2, null })
1564 +    {
1565 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1566 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1567 +        final Noop r = new Noop(m);
1568 +
1569 +        if (fFirst) f.complete(v1); else g.complete(v2);
1570 +        if (!createIncomplete)
1571 +            if (!fFirst) f.complete(v1); else g.complete(v2);
1572 +        final CompletableFuture<Void> h = m.runAfterBoth(f, g, r);
1573 +        if (createIncomplete) {
1574 +            checkIncomplete(h);
1575 +            assertEquals(0, r.invocationCount);
1576 +            if (!fFirst) f.complete(v1); else g.complete(v2);
1577 +        }
1578 +
1579 +        checkCompletedNormally(h, null);
1580 +        assertEquals(1, r.invocationCount);
1581 +        checkCompletedNormally(f, v1);
1582 +        checkCompletedNormally(g, v2);
1583 +    }}
1584 +
1585 +    /**
1586 +     * runAfterBoth result completes exceptionally after exceptional
1587 +     * completion of either source
1588 +     */
1589 +    public void testRunAfterBoth_exceptionalCompletion() {
1590 +        for (ExecutionMode m : ExecutionMode.values())
1591 +        for (boolean createIncomplete : new boolean[] { true, false })
1592 +        for (boolean fFirst : new boolean[] { true, false })
1593 +        for (Integer v1 : new Integer[] { 1, null })
1594 +    {
1595 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1596 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1597 +        final CFException ex = new CFException();
1598 +        final Noop r = new Noop(m);
1599 +
1600 +        (fFirst ? f : g).complete(v1);
1601 +        if (!createIncomplete)
1602 +            (!fFirst ? f : g).completeExceptionally(ex);
1603 +        final CompletableFuture<Void> h = m.runAfterBoth(f, g, r);
1604 +        if (createIncomplete) {
1605 +            checkIncomplete(h);
1606 +            (!fFirst ? f : g).completeExceptionally(ex);
1607 +        }
1608 +
1609 +        checkCompletedWithWrappedCFException(h, ex);
1610 +        assertEquals(0, r.invocationCount);
1611 +        checkCompletedNormally(fFirst ? f : g, v1);
1612 +        checkCompletedWithWrappedCFException(!fFirst ? f : g, ex);
1613 +    }}
1614 +
1615 +    /**
1616 +     * runAfterBoth result completes exceptionally if either source cancelled
1617 +     */
1618 +    public void testRunAfterBoth_sourceCancelled() {
1619 +        for (ExecutionMode m : ExecutionMode.values())
1620 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1621 +        for (boolean createIncomplete : new boolean[] { true, false })
1622 +        for (boolean fFirst : new boolean[] { true, false })
1623 +        for (Integer v1 : new Integer[] { 1, null })
1624 +    {
1625 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1626 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1627 +        final Noop r = new Noop(m);
1628 +
1629 +
1630 +        (fFirst ? f : g).complete(v1);
1631 +        if (!createIncomplete)
1632 +            assertTrue((!fFirst ? f : g).cancel(mayInterruptIfRunning));
1633 +        final CompletableFuture<Void> h = m.runAfterBoth(f, g, r);
1634 +        if (createIncomplete) {
1635 +            checkIncomplete(h);
1636 +            assertTrue((!fFirst ? f : g).cancel(mayInterruptIfRunning));
1637 +        }
1638 +
1639 +        checkCompletedWithWrappedCancellationException(h);
1640 +        checkCancelled(!fFirst ? f : g);
1641 +        assertEquals(0, r.invocationCount);
1642 +        checkCompletedNormally(fFirst ? f : g, v1);
1643 +    }}
1644 +
1645 +    /**
1646 +     * runAfterBoth result completes exceptionally if action does
1647 +     */
1648 +    public void testRunAfterBoth_actionFailed() {
1649 +        for (ExecutionMode m : ExecutionMode.values())
1650 +        for (boolean fFirst : new boolean[] { true, false })
1651 +        for (Integer v1 : new Integer[] { 1, null })
1652 +        for (Integer v2 : new Integer[] { 2, null })
1653 +    {
1654 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1655 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1656 +        final FailingRunnable r = new FailingRunnable(m);
1657 +
1658 +        CompletableFuture<Void> h1 = m.runAfterBoth(f, g, r);
1659 +        if (fFirst) {
1660 +            f.complete(v1);
1661 +            g.complete(v2);
1662 +        } else {
1663 +            g.complete(v2);
1664 +            f.complete(v1);
1665 +        }
1666 +        CompletableFuture<Void> h2 = m.runAfterBoth(f, g, r);
1667 +
1668 +        checkCompletedWithWrappedCFException(h1);
1669 +        checkCompletedWithWrappedCFException(h2);
1670 +        checkCompletedNormally(f, v1);
1671 +        checkCompletedNormally(g, v2);
1672 +    }}
1673 +
1674 +    /**
1675 +     * applyToEither result completes normally after normal completion
1676 +     * of either source
1677 +     */
1678 +    public void testApplyToEither_normalCompletion() {
1679 +        for (ExecutionMode m : ExecutionMode.values())
1680 +        for (boolean createIncomplete : new boolean[] { true, false })
1681 +        for (boolean fFirst : new boolean[] { true, false })
1682 +        for (Integer v1 : new Integer[] { 1, null })
1683 +        for (Integer v2 : new Integer[] { 2, null })
1684 +    {
1685 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1686 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1687 +        final IncFunction r = new IncFunction(m);
1688 +
1689 +        if (!createIncomplete)
1690 +            if (fFirst) f.complete(v1); else g.complete(v2);
1691 +        final CompletableFuture<Integer> h = m.applyToEither(f, g, r);
1692 +        if (createIncomplete) {
1693 +            checkIncomplete(h);
1694 +            assertEquals(0, r.invocationCount);
1695 +            if (fFirst) f.complete(v1); else g.complete(v2);
1696 +        }
1697 +        checkCompletedNormally(h, inc(fFirst ? v1 : v2));
1698 +        if (!fFirst) f.complete(v1); else g.complete(v2);
1699 +
1700 +        checkCompletedNormally(f, v1);
1701 +        checkCompletedNormally(g, v2);
1702 +        checkCompletedNormally(h, inc(fFirst ? v1 : v2));
1703 +    }}
1704 +
1705 +    public void testApplyToEither_normalCompletionBothAvailable() {
1706 +        for (ExecutionMode m : ExecutionMode.values())
1707 +        for (boolean fFirst : new boolean[] { true, false })
1708 +        for (Integer v1 : new Integer[] { 1, null })
1709 +        for (Integer v2 : new Integer[] { 2, null })
1710 +    {
1711 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1712 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1713 +        final IncFunction r = new IncFunction(m);
1714 +
1715 +        if (fFirst) {
1716 +            f.complete(v1);
1717 +            g.complete(v2);
1718 +        } else {
1719 +            g.complete(v2);
1720 +            f.complete(v1);
1721 +        }
1722 +
1723 +        final CompletableFuture<Integer> h = m.applyToEither(f, g, r);
1724 +
1725 +        checkCompletedNormally(f, v1);
1726 +        checkCompletedNormally(g, v2);
1727 +
1728 +        // unspecified behavior
1729 +        assertTrue(Objects.equals(h.join(), inc(v1)) ||
1730 +                   Objects.equals(h.join(), inc(v2)));
1731 +        assertEquals(1, r.invocationCount);
1732 +    }}
1733 +
1734 +    /**
1735 +     * applyToEither result completes exceptionally after exceptional
1736 +     * completion of either source
1737 +     */
1738 +    public void testApplyToEither_exceptionalCompletion1() {
1739 +        for (ExecutionMode m : ExecutionMode.values())
1740 +        for (boolean createIncomplete : new boolean[] { true, false })
1741 +        for (boolean fFirst : new boolean[] { true, false })
1742 +        for (Integer v1 : new Integer[] { 1, null })
1743 +    {
1744 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1745 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1746 +        final CFException ex = new CFException();
1747 +        final IncFunction r = new IncFunction(m);
1748 +
1749 +        if (!createIncomplete) (fFirst ? f : g).completeExceptionally(ex);
1750 +        final CompletableFuture<Integer> h = m.applyToEither(f, g, r);
1751 +        if (createIncomplete) {
1752 +            checkIncomplete(h);
1753 +            assertEquals(0, r.invocationCount);
1754 +            (fFirst ? f : g).completeExceptionally(ex);
1755 +        }
1756 +
1757 +        checkCompletedWithWrappedCFException(h, ex);
1758 +        (!fFirst ? f : g).complete(v1);
1759 +
1760 +        assertEquals(0, r.invocationCount);
1761 +        checkCompletedNormally(!fFirst ? f : g, v1);
1762 +        checkCompletedWithWrappedCFException(fFirst ? f : g, ex);
1763 +        checkCompletedWithWrappedCFException(h, ex);
1764 +    }}
1765 +
1766 +    public void testApplyToEither_exceptionalCompletion2() {
1767 +        for (ExecutionMode m : ExecutionMode.values())
1768 +        for (boolean reverseArgs : new boolean[] { true, false })
1769 +        for (boolean fFirst : new boolean[] { true, false })
1770 +        for (Integer v1 : new Integer[] { 1, null })
1771 +    {
1772 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1773 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1774 +        final IncFunction r1 = new IncFunction(m);
1775 +        final IncFunction r2 = new IncFunction(m);
1776 +        final CFException ex = new CFException();
1777 +        final CompletableFuture<Integer> j = (reverseArgs ? g : f);
1778 +        final CompletableFuture<Integer> k = (reverseArgs ? f : g);
1779 +        final CompletableFuture<Integer> h1 = m.applyToEither(j, k, r1);
1780 +        if (fFirst) {
1781 +            f.complete(v1);
1782 +            g.completeExceptionally(ex);
1783 +        } else {
1784 +            g.completeExceptionally(ex);
1785 +            f.complete(v1);
1786 +        }
1787 +        final CompletableFuture<Integer> h2 = m.applyToEither(j, k, r2);
1788 +
1789 +        // unspecified behavior
1790 +        try {
1791 +            assertEquals(inc(v1), h1.join());
1792 +            assertEquals(1, r1.invocationCount);
1793 +        } catch (CompletionException ok) {
1794 +            checkCompletedWithWrappedCFException(h1, ex);
1795 +            assertEquals(0, r1.invocationCount);
1796 +        }
1797 +
1798 +        try {
1799 +            assertEquals(inc(v1), h2.join());
1800 +            assertEquals(1, r2.invocationCount);
1801 +        } catch (CompletionException ok) {
1802 +            checkCompletedWithWrappedCFException(h2, ex);
1803 +            assertEquals(0, r2.invocationCount);
1804 +        }
1805 +
1806 +        checkCompletedWithWrappedCFException(g, ex);
1807 +        checkCompletedNormally(f, v1);
1808 +    }}
1809 +
1810 +    /**
1811 +     * applyToEither result completes exceptionally if action does
1812 +     */
1813 +    public void testApplyToEither_actionFailed1() {
1814 +        for (ExecutionMode m : ExecutionMode.values())
1815 +        for (Integer v1 : new Integer[] { 1, null })
1816 +        for (Integer v2 : new Integer[] { 2, null })
1817 +    {
1818 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1819 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1820 +        final FailingFunction r = new FailingFunction(m);
1821 +        final CompletableFuture<Integer> h = m.applyToEither(f, g, r);
1822 +
1823 +        f.complete(v1);
1824 +        checkCompletedWithWrappedCFException(h);
1825 +        g.complete(v2);
1826 +        checkCompletedNormally(f, v1);
1827 +        checkCompletedNormally(g, v2);
1828 +    }}
1829 +
1830 +    public void testApplyToEither_actionFailed2() {
1831 +        for (ExecutionMode m : ExecutionMode.values())
1832 +        for (Integer v1 : new Integer[] { 1, null })
1833 +        for (Integer v2 : new Integer[] { 2, null })
1834 +    {
1835 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1836 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1837 +        final FailingFunction r = new FailingFunction(m);
1838 +        final CompletableFuture<Integer> h = m.applyToEither(f, g, r);
1839 +
1840 +        g.complete(v2);
1841 +        checkCompletedWithWrappedCFException(h);
1842 +        f.complete(v1);
1843 +        checkCompletedNormally(f, v1);
1844 +        checkCompletedNormally(g, v2);
1845 +    }}
1846 +
1847 +    /**
1848 +     * applyToEither result completes exceptionally if either source cancelled
1849 +     */
1850 +    public void testApplyToEither_sourceCancelled1() {
1851 +        for (ExecutionMode m : ExecutionMode.values())
1852 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1853 +        for (boolean createIncomplete : new boolean[] { true, false })
1854 +        for (boolean fFirst : new boolean[] { true, false })
1855 +        for (Integer v1 : new Integer[] { 1, null })
1856 +    {
1857 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1858 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1859 +        final IncFunction r = new IncFunction(m);
1860 +
1861 +        if (!createIncomplete) assertTrue((fFirst ? f : g).cancel(mayInterruptIfRunning));
1862 +        final CompletableFuture<Integer> h = m.applyToEither(f, g, r);
1863 +        if (createIncomplete) {
1864 +            checkIncomplete(h);
1865 +            assertEquals(0, r.invocationCount);
1866 +            assertTrue((fFirst ? f : g).cancel(mayInterruptIfRunning));
1867 +        }
1868 +
1869 +        checkCompletedWithWrappedCancellationException(h);
1870 +        (!fFirst ? f : g).complete(v1);
1871 +
1872 +        assertEquals(0, r.invocationCount);
1873 +        checkCompletedNormally(!fFirst ? f : g, v1);
1874 +        checkCancelled(fFirst ? f : g);
1875 +        checkCompletedWithWrappedCancellationException(h);
1876 +    }}
1877 +
1878 +    public void testApplyToEither_sourceCancelled2() {
1879 +        for (ExecutionMode m : ExecutionMode.values())
1880 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1881 +        for (boolean reverseArgs : new boolean[] { true, false })
1882 +        for (boolean fFirst : new boolean[] { true, false })
1883 +        for (Integer v1 : new Integer[] { 1, null })
1884 +    {
1885 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1886 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1887 +        final IncFunction r1 = new IncFunction(m);
1888 +        final IncFunction r2 = new IncFunction(m);
1889 +        final CFException ex = new CFException();
1890 +        final CompletableFuture<Integer> j = (reverseArgs ? g : f);
1891 +        final CompletableFuture<Integer> k = (reverseArgs ? f : g);
1892 +
1893 +        final CompletableFuture<Integer> h1 = m.applyToEither(j, k, r1);
1894 +        if (fFirst) {
1895 +            f.complete(v1);
1896 +            assertTrue(g.cancel(mayInterruptIfRunning));
1897 +        } else {
1898 +            assertTrue(g.cancel(mayInterruptIfRunning));
1899 +            f.complete(v1);
1900 +        }
1901 +        final CompletableFuture<Integer> h2 = m.applyToEither(j, k, r2);
1902 +
1903 +        // unspecified behavior
1904 +        try {
1905 +            assertEquals(inc(v1), h1.join());
1906 +            assertEquals(1, r1.invocationCount);
1907 +        } catch (CompletionException ok) {
1908 +            checkCompletedWithWrappedCancellationException(h1);
1909 +            assertEquals(0, r1.invocationCount);
1910 +        }
1911 +
1912 +        try {
1913 +            assertEquals(inc(v1), h2.join());
1914 +            assertEquals(1, r2.invocationCount);
1915 +        } catch (CompletionException ok) {
1916 +            checkCompletedWithWrappedCancellationException(h2);
1917 +            assertEquals(0, r2.invocationCount);
1918 +        }
1919 +
1920 +        checkCancelled(g);
1921 +        checkCompletedNormally(f, v1);
1922 +    }}
1923 +
1924 +    /**
1925 +     * acceptEither result completes normally after normal completion
1926 +     * of either source
1927 +     */
1928 +    public void testAcceptEither_normalCompletion1() {
1929 +        for (ExecutionMode m : ExecutionMode.values())
1930 +        for (Integer v1 : new Integer[] { 1, null })
1931 +        for (Integer v2 : new Integer[] { 2, null })
1932 +    {
1933 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1934 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1935 +        final IncAction r = new IncAction();
1936 +        final CompletableFuture<Void> h = m.acceptEither(f, g, r);
1937 +
1938 +        f.complete(v1);
1939 +        checkCompletedNormally(h, null);
1940 +        assertEquals(inc(v1), r.value);
1941 +        g.complete(v2);
1942 +
1943 +        checkCompletedNormally(f, v1);
1944 +        checkCompletedNormally(g, v2);
1945 +        checkCompletedNormally(h, null);
1946 +    }}
1947 +
1948 +    public void testAcceptEither_normalCompletion2() {
1949 +        for (ExecutionMode m : ExecutionMode.values())
1950 +        for (Integer v1 : new Integer[] { 1, null })
1951 +        for (Integer v2 : new Integer[] { 2, null })
1952 +    {
1953 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1954 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1955 +        final IncAction r = new IncAction();
1956 +        final CompletableFuture<Void> h = m.acceptEither(f, g, r);
1957 +
1958 +        g.complete(v2);
1959 +        checkCompletedNormally(h, null);
1960 +        assertEquals(inc(v2), r.value);
1961 +        f.complete(v1);
1962 +
1963 +        checkCompletedNormally(f, v1);
1964 +        checkCompletedNormally(g, v2);
1965 +        checkCompletedNormally(h, null);
1966 +    }}
1967 +
1968 +    public void testAcceptEither_normalCompletion3() {
1969 +        for (ExecutionMode m : ExecutionMode.values())
1970 +        for (Integer v1 : new Integer[] { 1, null })
1971 +        for (Integer v2 : new Integer[] { 2, null })
1972 +    {
1973 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1974 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1975 +        final IncAction r = new IncAction();
1976 +
1977 +        f.complete(v1);
1978 +        g.complete(v2);
1979 +        final CompletableFuture<Void> h = m.acceptEither(f, g, r);
1980 +
1981 +        checkCompletedNormally(h, null);
1982 +        checkCompletedNormally(f, v1);
1983 +        checkCompletedNormally(g, v2);
1984 +
1985 +        // unspecified behavior
1986 +        assertTrue(Objects.equals(r.value, inc(v1)) ||
1987 +                   Objects.equals(r.value, inc(v2)));
1988 +    }}
1989 +
1990 +    /**
1991 +     * acceptEither result completes exceptionally after exceptional
1992 +     * completion of either source
1993 +     */
1994 +    public void testAcceptEither_exceptionalCompletion1() {
1995 +        for (ExecutionMode m : ExecutionMode.values())
1996 +        for (Integer v1 : new Integer[] { 1, null })
1997 +    {
1998 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1999 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2000 +        final IncAction r = new IncAction();
2001 +        final CompletableFuture<Void> h = m.acceptEither(f, g, r);
2002 +        final CFException ex = new CFException();
2003 +
2004 +        f.completeExceptionally(ex);
2005 +        checkCompletedWithWrappedCFException(h, ex);
2006 +        g.complete(v1);
2007 +
2008 +        assertEquals(0, r.invocationCount);
2009 +        checkCompletedNormally(g, v1);
2010 +        checkCompletedWithWrappedCFException(f, ex);
2011 +        checkCompletedWithWrappedCFException(h, ex);
2012 +    }}
2013 +
2014 +    public void testAcceptEither_exceptionalCompletion2() {
2015 +        for (ExecutionMode m : ExecutionMode.values())
2016 +        for (Integer v1 : new Integer[] { 1, null })
2017 +    {
2018 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2019 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2020 +        final IncAction r = new IncAction();
2021 +        final CompletableFuture<Void> h = m.acceptEither(f, g, r);
2022 +        final CFException ex = new CFException();
2023 +
2024 +        g.completeExceptionally(ex);
2025 +        checkCompletedWithWrappedCFException(h, ex);
2026 +        f.complete(v1);
2027 +
2028 +        assertEquals(0, r.invocationCount);
2029 +        checkCompletedNormally(f, v1);
2030 +        checkCompletedWithWrappedCFException(g, ex);
2031 +        checkCompletedWithWrappedCFException(h, ex);
2032 +    }}
2033 +
2034 +    public void testAcceptEither_exceptionalCompletion3() {
2035 +        for (ExecutionMode m : ExecutionMode.values())
2036 +        for (Integer v1 : new Integer[] { 1, null })
2037 +    {
2038 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2039 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2040 +        final IncAction r = new IncAction();
2041 +        final CFException ex = new CFException();
2042 +
2043 +        g.completeExceptionally(ex);
2044 +        f.complete(v1);
2045 +        final CompletableFuture<Void> h = m.acceptEither(f, g, r);
2046 +
2047 +        // unspecified behavior
2048 +        Integer v;
2049 +        try {
2050 +            assertNull(h.join());
2051 +            assertEquals(1, r.invocationCount);
2052 +            assertEquals(inc(v1), r.value);
2053 +        } catch (CompletionException ok) {
2054 +            checkCompletedWithWrappedCFException(h, ex);
2055 +            assertEquals(0, r.invocationCount);
2056 +        }
2057 +
2058 +        checkCompletedWithWrappedCFException(g, ex);
2059 +        checkCompletedNormally(f, v1);
2060 +    }}
2061 +
2062 +    public void testAcceptEither_exceptionalCompletion4() {
2063 +        for (ExecutionMode m : ExecutionMode.values())
2064 +        for (Integer v1 : new Integer[] { 1, null })
2065 +    {
2066 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2067 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2068 +        final IncAction r = new IncAction();
2069 +        final CFException ex = new CFException();
2070 +
2071 +        f.completeExceptionally(ex);
2072 +        g.complete(v1);
2073 +        final CompletableFuture<Void> h = m.acceptEither(f, g, r);
2074 +
2075 +        // unspecified behavior
2076 +        Integer v;
2077 +        try {
2078 +            assertNull(h.join());
2079 +            assertEquals(1, r.invocationCount);
2080 +            assertEquals(inc(v1), r.value);
2081 +        } catch (CompletionException ok) {
2082 +            checkCompletedWithWrappedCFException(h, ex);
2083 +            assertEquals(0, r.invocationCount);
2084 +        }
2085 +
2086 +        checkCompletedWithWrappedCFException(f, ex);
2087 +        checkCompletedNormally(g, v1);
2088 +    }}
2089 +
2090 +    /**
2091 +     * acceptEither result completes exceptionally if action does
2092 +     */
2093 +    public void testAcceptEither_actionFailed1() {
2094 +        for (ExecutionMode m : ExecutionMode.values())
2095 +        for (Integer v1 : new Integer[] { 1, null })
2096 +        for (Integer v2 : new Integer[] { 2, null })
2097 +    {
2098 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2099 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2100 +        final FailingConsumer r = new FailingConsumer(m);
2101 +        final CompletableFuture<Void> h = m.acceptEither(f, g, r);
2102 +
2103 +        f.complete(v1);
2104 +        checkCompletedWithWrappedCFException(h);
2105 +        g.complete(v2);
2106 +        checkCompletedNormally(f, v1);
2107 +        checkCompletedNormally(g, v2);
2108 +    }}
2109 +
2110 +    public void testAcceptEither_actionFailed2() {
2111 +        for (ExecutionMode m : ExecutionMode.values())
2112 +        for (Integer v1 : new Integer[] { 1, null })
2113 +        for (Integer v2 : new Integer[] { 2, null })
2114 +    {
2115 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2116 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2117 +        final FailingConsumer r = new FailingConsumer(m);
2118 +        final CompletableFuture<Void> h = m.acceptEither(f, g, r);
2119 +
2120 +        g.complete(v2);
2121 +        checkCompletedWithWrappedCFException(h);
2122 +        f.complete(v1);
2123 +        checkCompletedNormally(f, v1);
2124 +        checkCompletedNormally(g, v2);
2125 +    }}
2126 +
2127 +    /**
2128 +     * acceptEither result completes exceptionally if either source cancelled
2129 +     */
2130 +    public void testAcceptEither_sourceCancelled1() {
2131 +        for (ExecutionMode m : ExecutionMode.values())
2132 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2133 +        for (Integer v1 : new Integer[] { 1, null })
2134 +    {
2135 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2136 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2137 +        final IncAction r = new IncAction();
2138 +        final CompletableFuture<Void> h = m.acceptEither(f, g, r);
2139 +
2140 +        assertTrue(f.cancel(mayInterruptIfRunning));
2141 +        checkCompletedWithWrappedCancellationException(h);
2142 +        g.complete(v1);
2143 +
2144 +        checkCancelled(f);
2145 +        assertEquals(0, r.invocationCount);
2146 +        checkCompletedNormally(g, v1);
2147 +        checkCompletedWithWrappedCancellationException(h);
2148 +    }}
2149 +
2150 +    public void testAcceptEither_sourceCancelled2() {
2151 +        for (ExecutionMode m : ExecutionMode.values())
2152 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2153 +        for (Integer v1 : new Integer[] { 1, null })
2154 +    {
2155 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2156 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2157 +        final IncAction r = new IncAction();
2158 +        final CompletableFuture<Void> h = m.acceptEither(f, g, r);
2159 +
2160 +        assertTrue(g.cancel(mayInterruptIfRunning));
2161 +        checkCompletedWithWrappedCancellationException(h);
2162 +        f.complete(v1);
2163 +
2164 +        checkCancelled(g);
2165 +        assertEquals(0, r.invocationCount);
2166 +        checkCompletedNormally(f, v1);
2167 +        checkCompletedWithWrappedCancellationException(h);
2168 +    }}
2169 +
2170 +    public void testAcceptEither_sourceCancelled3() {
2171 +        for (ExecutionMode m : ExecutionMode.values())
2172 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2173 +        for (Integer v1 : new Integer[] { 1, null })
2174 +    {
2175 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2176 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2177 +        final IncAction r = new IncAction();
2178 +
2179 +        assertTrue(g.cancel(mayInterruptIfRunning));
2180 +        f.complete(v1);
2181 +        final CompletableFuture<Void> h = m.acceptEither(f, g, r);
2182 +
2183 +        // unspecified behavior
2184 +        Integer v;
2185 +        try {
2186 +            assertNull(h.join());
2187 +            assertEquals(1, r.invocationCount);
2188 +            assertEquals(inc(v1), r.value);
2189 +        } catch (CompletionException ok) {
2190 +            checkCompletedWithWrappedCancellationException(h);
2191 +            assertEquals(0, r.invocationCount);
2192 +        }
2193 +
2194 +        checkCancelled(g);
2195 +        checkCompletedNormally(f, v1);
2196 +    }}
2197 +
2198 +    public void testAcceptEither_sourceCancelled4() {
2199 +        for (ExecutionMode m : ExecutionMode.values())
2200 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2201 +        for (Integer v1 : new Integer[] { 1, null })
2202 +    {
2203 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2204 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2205 +        final IncAction r = new IncAction();
2206 +
2207 +        assertTrue(f.cancel(mayInterruptIfRunning));
2208 +        g.complete(v1);
2209 +        final CompletableFuture<Void> h = m.acceptEither(f, g, r);
2210 +
2211 +        // unspecified behavior
2212 +        Integer v;
2213 +        try {
2214 +            assertNull(h.join());
2215 +            assertEquals(1, r.invocationCount);
2216 +            assertEquals(inc(v1), r.value);
2217 +        } catch (CompletionException ok) {
2218 +            checkCompletedWithWrappedCancellationException(h);
2219 +            assertEquals(0, r.invocationCount);
2220 +        }
2221 +
2222 +        checkCancelled(f);
2223 +        checkCompletedNormally(g, v1);
2224 +    }}
2225 +
2226 +    /**
2227 +     * runAfterEither result completes normally after normal completion
2228 +     * of either source
2229 +     */
2230 +    public void testRunAfterEither_normalCompletion1() {
2231 +        for (ExecutionMode m : ExecutionMode.values())
2232 +        for (Integer v1 : new Integer[] { 1, null })
2233 +        for (Integer v2 : new Integer[] { 2, null })
2234 +    {
2235 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2236 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2237 +        final Noop r = new Noop(m);
2238 +        final CompletableFuture<Void> h = m.runAfterEither(f, g, r);
2239 +
2240 +        f.complete(v1);
2241 +        checkCompletedNormally(h, null);
2242 +        assertEquals(1, r.invocationCount);
2243 +        g.complete(v2);
2244 +
2245 +        checkCompletedNormally(f, v1);
2246 +        checkCompletedNormally(g, v2);
2247 +        checkCompletedNormally(h, null);
2248 +        assertEquals(1, r.invocationCount);
2249 +    }}
2250 +
2251 +    public void testRunAfterEither_normalCompletion2() {
2252 +        for (ExecutionMode m : ExecutionMode.values())
2253 +        for (Integer v1 : new Integer[] { 1, null })
2254 +        for (Integer v2 : new Integer[] { 2, null })
2255 +    {
2256 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2257 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2258 +        final Noop r = new Noop(m);
2259 +        final CompletableFuture<Void> h = m.runAfterEither(f, g, r);
2260 +
2261 +        g.complete(v2);
2262 +        checkCompletedNormally(h, null);
2263 +        assertEquals(1, r.invocationCount);
2264 +        f.complete(v1);
2265 +
2266 +        checkCompletedNormally(f, v1);
2267 +        checkCompletedNormally(g, v2);
2268 +        checkCompletedNormally(h, null);
2269 +        assertEquals(1, r.invocationCount);
2270 +        }}
2271 +
2272 +    public void testRunAfterEither_normalCompletion3() {
2273 +        for (ExecutionMode m : ExecutionMode.values())
2274 +        for (Integer v1 : new Integer[] { 1, null })
2275 +        for (Integer v2 : new Integer[] { 2, null })
2276 +    {
2277 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2278 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2279 +        final Noop r = new Noop(m);
2280 +
2281 +        f.complete(v1);
2282 +        g.complete(v2);
2283 +        final CompletableFuture<Void> h = m.runAfterEither(f, g, r);
2284 +
2285 +        checkCompletedNormally(h, null);
2286 +        checkCompletedNormally(f, v1);
2287 +        checkCompletedNormally(g, v2);
2288 +        assertEquals(1, r.invocationCount);
2289 +    }}
2290 +
2291 +    /**
2292 +     * runAfterEither result completes exceptionally after exceptional
2293 +     * completion of either source
2294 +     */
2295 +    public void testRunAfterEither_exceptionalCompletion1() {
2296 +        for (ExecutionMode m : ExecutionMode.values())
2297 +        for (Integer v1 : new Integer[] { 1, null })
2298 +    {
2299 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2300 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2301 +        final Noop r = new Noop(m);
2302 +        final CompletableFuture<Void> h = m.runAfterEither(f, g, r);
2303 +        final CFException ex = new CFException();
2304 +
2305 +        f.completeExceptionally(ex);
2306 +        checkCompletedWithWrappedCFException(h, ex);
2307 +        g.complete(v1);
2308 +
2309 +        assertEquals(0, r.invocationCount);
2310 +        checkCompletedNormally(g, v1);
2311 +        checkCompletedWithWrappedCFException(f, ex);
2312 +        checkCompletedWithWrappedCFException(h, ex);
2313 +    }}
2314 +
2315 +    public void testRunAfterEither_exceptionalCompletion2() {
2316 +        for (ExecutionMode m : ExecutionMode.values())
2317 +        for (Integer v1 : new Integer[] { 1, null })
2318 +    {
2319 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2320 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2321 +        final Noop r = new Noop(m);
2322 +        final CompletableFuture<Void> h = m.runAfterEither(f, g, r);
2323 +        final CFException ex = new CFException();
2324 +
2325 +        g.completeExceptionally(ex);
2326 +        checkCompletedWithWrappedCFException(h, ex);
2327 +        f.complete(v1);
2328 +
2329 +        assertEquals(0, r.invocationCount);
2330 +        checkCompletedNormally(f, v1);
2331 +        checkCompletedWithWrappedCFException(g, ex);
2332 +        checkCompletedWithWrappedCFException(h, ex);
2333 +    }}
2334 +
2335 +    public void testRunAfterEither_exceptionalCompletion3() {
2336 +        for (ExecutionMode m : ExecutionMode.values())
2337 +        for (Integer v1 : new Integer[] { 1, null })
2338 +    {
2339 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2340 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2341 +        final Noop r = new Noop(m);
2342 +        final CFException ex = new CFException();
2343 +
2344 +        g.completeExceptionally(ex);
2345 +        f.complete(v1);
2346 +        final CompletableFuture<Void> h = m.runAfterEither(f, g, r);
2347 +
2348 +        // unspecified behavior
2349 +        Integer v;
2350 +        try {
2351 +            assertNull(h.join());
2352 +            assertEquals(1, r.invocationCount);
2353 +        } catch (CompletionException ok) {
2354 +            checkCompletedWithWrappedCFException(h, ex);
2355 +            assertEquals(0, r.invocationCount);
2356 +        }
2357 +
2358 +        checkCompletedWithWrappedCFException(g, ex);
2359 +        checkCompletedNormally(f, v1);
2360 +    }}
2361 +
2362 +    public void testRunAfterEither_exceptionalCompletion4() {
2363 +        for (ExecutionMode m : ExecutionMode.values())
2364 +        for (Integer v1 : new Integer[] { 1, null })
2365 +    {
2366 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2367 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2368 +        final Noop r = new Noop(m);
2369 +        final CFException ex = new CFException();
2370 +
2371 +        f.completeExceptionally(ex);
2372 +        g.complete(v1);
2373 +        final CompletableFuture<Void> h = m.runAfterEither(f, g, r);
2374 +
2375 +        // unspecified behavior
2376 +        Integer v;
2377 +        try {
2378 +            assertNull(h.join());
2379 +            assertEquals(1, r.invocationCount);
2380 +        } catch (CompletionException ok) {
2381 +            checkCompletedWithWrappedCFException(h, ex);
2382 +            assertEquals(0, r.invocationCount);
2383 +        }
2384 +
2385 +        checkCompletedWithWrappedCFException(f, ex);
2386 +        checkCompletedNormally(g, v1);
2387 +    }}
2388 +
2389 +    /**
2390 +     * runAfterEither result completes exceptionally if action does
2391 +     */
2392 +    public void testRunAfterEither_actionFailed1() {
2393 +        for (ExecutionMode m : ExecutionMode.values())
2394 +        for (Integer v1 : new Integer[] { 1, null })
2395 +        for (Integer v2 : new Integer[] { 2, null })
2396 +    {
2397 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2398 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2399 +        final FailingRunnable r = new FailingRunnable(m);
2400 +        final CompletableFuture<Void> h = m.runAfterEither(f, g, r);
2401 +
2402 +        f.complete(v1);
2403 +        checkCompletedWithWrappedCFException(h);
2404 +        g.complete(v2);
2405 +        checkCompletedNormally(f, v1);
2406 +        checkCompletedNormally(g, v2);
2407 +    }}
2408 +
2409 +    public void testRunAfterEither_actionFailed2() {
2410 +        for (ExecutionMode m : ExecutionMode.values())
2411 +        for (Integer v1 : new Integer[] { 1, null })
2412 +        for (Integer v2 : new Integer[] { 2, null })
2413 +    {
2414 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2415 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2416 +        final FailingRunnable r = new FailingRunnable(m);
2417 +        final CompletableFuture<Void> h = m.runAfterEither(f, g, r);
2418 +
2419 +        g.complete(v2);
2420 +        checkCompletedWithWrappedCFException(h);
2421 +        f.complete(v1);
2422 +        checkCompletedNormally(f, v1);
2423 +        checkCompletedNormally(g, v2);
2424 +    }}
2425 +
2426 +    /**
2427 +     * runAfterEither result completes exceptionally if either source cancelled
2428 +     */
2429 +    public void testRunAfterEither_sourceCancelled1() {
2430 +        for (ExecutionMode m : ExecutionMode.values())
2431 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2432 +        for (Integer v1 : new Integer[] { 1, null })
2433 +    {
2434 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2435 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2436 +        final Noop r = new Noop(m);
2437 +        final CompletableFuture<Void> h = m.runAfterEither(f, g, r);
2438 +
2439 +        assertTrue(f.cancel(mayInterruptIfRunning));
2440 +        checkCompletedWithWrappedCancellationException(h);
2441 +        g.complete(v1);
2442 +
2443 +        checkCancelled(f);
2444 +        assertEquals(0, r.invocationCount);
2445 +        checkCompletedNormally(g, v1);
2446 +        checkCompletedWithWrappedCancellationException(h);
2447 +    }}
2448 +
2449 +    public void testRunAfterEither_sourceCancelled2() {
2450 +        for (ExecutionMode m : ExecutionMode.values())
2451 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2452 +        for (Integer v1 : new Integer[] { 1, null })
2453 +    {
2454 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2455 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2456 +        final Noop r = new Noop(m);
2457 +        final CompletableFuture<Void> h = m.runAfterEither(f, g, r);
2458 +
2459 +        assertTrue(g.cancel(mayInterruptIfRunning));
2460 +        checkCompletedWithWrappedCancellationException(h);
2461 +        f.complete(v1);
2462 +
2463 +        checkCancelled(g);
2464 +        assertEquals(0, r.invocationCount);
2465 +        checkCompletedNormally(f, v1);
2466 +        checkCompletedWithWrappedCancellationException(h);
2467 +    }}
2468 +
2469 +    public void testRunAfterEither_sourceCancelled3() {
2470 +        for (ExecutionMode m : ExecutionMode.values())
2471 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2472 +        for (Integer v1 : new Integer[] { 1, null })
2473 +    {
2474 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2475 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2476 +        final Noop r = new Noop(m);
2477 +
2478 +        assertTrue(g.cancel(mayInterruptIfRunning));
2479 +        f.complete(v1);
2480 +        final CompletableFuture<Void> h = m.runAfterEither(f, g, r);
2481 +
2482 +        // unspecified behavior
2483 +        Integer v;
2484 +        try {
2485 +            assertNull(h.join());
2486 +            assertEquals(1, r.invocationCount);
2487 +        } catch (CompletionException ok) {
2488 +            checkCompletedWithWrappedCancellationException(h);
2489 +            assertEquals(0, r.invocationCount);
2490 +        }
2491 +
2492 +        checkCancelled(g);
2493 +        checkCompletedNormally(f, v1);
2494 +    }}
2495 +
2496 +    public void testRunAfterEither_sourceCancelled4() {
2497 +        for (ExecutionMode m : ExecutionMode.values())
2498 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2499 +        for (Integer v1 : new Integer[] { 1, null })
2500 +    {
2501 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2502 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2503 +        final Noop r = new Noop(m);
2504 +
2505 +        assertTrue(f.cancel(mayInterruptIfRunning));
2506 +        g.complete(v1);
2507 +        final CompletableFuture<Void> h = m.runAfterEither(f, g, r);
2508 +
2509 +        // unspecified behavior
2510 +        Integer v;
2511 +        try {
2512 +            assertNull(h.join());
2513 +            assertEquals(1, r.invocationCount);
2514 +        } catch (CompletionException ok) {
2515 +            checkCompletedWithWrappedCancellationException(h);
2516 +            assertEquals(0, r.invocationCount);
2517 +        }
2518 +
2519 +        checkCancelled(f);
2520 +        checkCompletedNormally(g, v1);
2521 +    }}
2522 +
2523 +    /**
2524 +     * thenCompose result completes normally after normal completion of source
2525 +     */
2526 +    public void testThenCompose_normalCompletion() {
2527 +        for (ExecutionMode m : ExecutionMode.values())
2528 +        for (boolean createIncomplete : new boolean[] { true, false })
2529 +        for (Integer v1 : new Integer[] { 1, null })
2530 +    {
2531 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2532 +        final CompletableFutureInc r = new CompletableFutureInc(m);
2533 +        if (!createIncomplete) f.complete(v1);
2534 +        final CompletableFuture<Integer> g = m.thenCompose(f, r);
2535 +        if (createIncomplete) f.complete(v1);
2536 +
2537 +        checkCompletedNormally(g, inc(v1));
2538 +        checkCompletedNormally(f, v1);
2539 +        assertEquals(1, r.invocationCount);
2540 +    }}
2541 +
2542 +    /**
2543 +     * thenCompose result completes exceptionally after exceptional
2544 +     * completion of source
2545 +     */
2546 +    public void testThenCompose_exceptionalCompletion() {
2547 +        for (ExecutionMode m : ExecutionMode.values())
2548 +        for (boolean createIncomplete : new boolean[] { true, false })
2549 +    {
2550 +        final CFException ex = new CFException();
2551 +        final CompletableFutureInc r = new CompletableFutureInc(m);
2552 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2553 +        if (!createIncomplete) f.completeExceptionally(ex);
2554 +        final CompletableFuture<Integer> g = m.thenCompose(f, r);
2555 +        if (createIncomplete) f.completeExceptionally(ex);
2556 +
2557 +        checkCompletedWithWrappedCFException(g, ex);
2558 +        checkCompletedWithWrappedCFException(f, ex);
2559 +        assertEquals(0, r.invocationCount);
2560 +    }}
2561 +
2562 +    /**
2563 +     * thenCompose result completes exceptionally if action does
2564 +     */
2565 +    public void testThenCompose_actionFailed() {
2566 +        for (ExecutionMode m : ExecutionMode.values())
2567 +        for (boolean createIncomplete : new boolean[] { true, false })
2568 +        for (Integer v1 : new Integer[] { 1, null })
2569 +    {
2570 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2571 +        final FailingCompletableFutureFunction r
2572 +            = new FailingCompletableFutureFunction(m);
2573 +        if (!createIncomplete) f.complete(v1);
2574 +        final CompletableFuture<Integer> g = m.thenCompose(f, r);
2575 +        if (createIncomplete) f.complete(v1);
2576 +
2577 +        checkCompletedWithWrappedCFException(g);
2578 +        checkCompletedNormally(f, v1);
2579 +    }}
2580 +
2581 +    /**
2582 +     * thenCompose result completes exceptionally if source cancelled
2583 +     */
2584 +    public void testThenCompose_sourceCancelled() {
2585 +        for (ExecutionMode m : ExecutionMode.values())
2586 +        for (boolean createIncomplete : new boolean[] { true, false })
2587 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2588 +    {
2589 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2590 +        final CompletableFutureInc r = new CompletableFutureInc(m);
2591 +        if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
2592 +        final CompletableFuture<Integer> g = m.thenCompose(f, r);
2593 +        if (createIncomplete) {
2594 +            checkIncomplete(g);
2595 +            assertTrue(f.cancel(mayInterruptIfRunning));
2596 +        }
2597 +
2598 +        checkCompletedWithWrappedCancellationException(g);
2599 +        checkCancelled(f);
2600 +    }}
2601 +
2602 +    // other static methods
2603 +
2604 +    /**
2605 +     * allOf(no component futures) returns a future completed normally
2606 +     * with the value null
2607 +     */
2608 +    public void testAllOf_empty() throws Exception {
2609 +        CompletableFuture<Void> f = CompletableFuture.allOf();
2610 +        checkCompletedNormally(f, null);
2611 +    }
2612 +
2613 +    /**
2614 +     * allOf returns a future completed normally with the value null
2615 +     * when all components complete normally
2616 +     */
2617 +    public void testAllOf_normal() throws Exception {
2618 +        for (int k = 1; k < 20; ++k) {
2619 +            CompletableFuture<Integer>[] fs
2620 +                = (CompletableFuture<Integer>[]) new CompletableFuture[k];
2621 +            for (int i = 0; i < k; ++i)
2622 +                fs[i] = new CompletableFuture<>();
2623 +            CompletableFuture<Void> f = CompletableFuture.allOf(fs);
2624 +            for (int i = 0; i < k; ++i) {
2625 +                checkIncomplete(f);
2626 +                checkIncomplete(CompletableFuture.allOf(fs));
2627 +                fs[i].complete(one);
2628 +            }
2629 +            checkCompletedNormally(f, null);
2630 +            checkCompletedNormally(CompletableFuture.allOf(fs), null);
2631 +        }
2632 +    }
2633 +
2634 +    public void testAllOf_backwards() throws Exception {
2635 +        for (int k = 1; k < 20; ++k) {
2636 +            CompletableFuture<Integer>[] fs
2637 +                = (CompletableFuture<Integer>[]) new CompletableFuture[k];
2638 +            for (int i = 0; i < k; ++i)
2639 +                fs[i] = new CompletableFuture<>();
2640 +            CompletableFuture<Void> f = CompletableFuture.allOf(fs);
2641 +            for (int i = k - 1; i >= 0; i--) {
2642 +                checkIncomplete(f);
2643 +                checkIncomplete(CompletableFuture.allOf(fs));
2644 +                fs[i].complete(one);
2645 +            }
2646 +            checkCompletedNormally(f, null);
2647 +            checkCompletedNormally(CompletableFuture.allOf(fs), null);
2648 +        }
2649 +    }
2650 +
2651 +    /**
2652 +     * anyOf(no component futures) returns an incomplete future
2653 +     */
2654 +    public void testAnyOf_empty() throws Exception {
2655 +        CompletableFuture<Object> f = CompletableFuture.anyOf();
2656 +        checkIncomplete(f);
2657 +    }
2658 +
2659 +    /**
2660 +     * anyOf returns a future completed normally with a value when
2661 +     * a component future does
2662 +     */
2663 +    public void testAnyOf_normal() throws Exception {
2664 +        for (int k = 0; k < 10; ++k) {
2665 +            CompletableFuture[] fs = new CompletableFuture[k];
2666 +            for (int i = 0; i < k; ++i)
2667 +                fs[i] = new CompletableFuture<>();
2668 +            CompletableFuture<Object> f = CompletableFuture.anyOf(fs);
2669 +            checkIncomplete(f);
2670 +            for (int i = 0; i < k; ++i) {
2671 +                fs[i].complete(one);
2672 +                checkCompletedNormally(f, one);
2673 +                checkCompletedNormally(CompletableFuture.anyOf(fs), one);
2674 +            }
2675 +        }
2676 +    }
2677 +
2678 +    /**
2679 +     * anyOf result completes exceptionally when any component does.
2680 +     */
2681 +    public void testAnyOf_exceptional() throws Exception {
2682 +        for (int k = 0; k < 10; ++k) {
2683 +            CompletableFuture[] fs = new CompletableFuture[k];
2684 +            for (int i = 0; i < k; ++i)
2685 +                fs[i] = new CompletableFuture<>();
2686 +            CompletableFuture<Object> f = CompletableFuture.anyOf(fs);
2687 +            checkIncomplete(f);
2688 +            for (int i = 0; i < k; ++i) {
2689 +                fs[i].completeExceptionally(new CFException());
2690 +                checkCompletedWithWrappedCFException(f);
2691 +                checkCompletedWithWrappedCFException(CompletableFuture.anyOf(fs));
2692 +            }
2693 +        }
2694 +    }
2695 +
2696 +    /**
2697 +     * Completion methods throw NullPointerException with null arguments
2698 +     */
2699 +    public void testNPE() {
2700 +        CompletableFuture<Integer> f = new CompletableFuture<>();
2701 +        CompletableFuture<Integer> g = new CompletableFuture<>();
2702 +        CompletableFuture<Integer> nullFuture = (CompletableFuture<Integer>)null;
2703 +        CompletableFuture<?> h;
2704 +        ThreadExecutor exec = new ThreadExecutor();
2705 +
2706 +        Runnable[] throwingActions = {
2707 +            () -> CompletableFuture.supplyAsync(null),
2708 +            () -> CompletableFuture.supplyAsync(null, exec),
2709 +            () -> CompletableFuture.supplyAsync(new IntegerSupplier(ExecutionMode.DEFAULT, 42), null),
2710 +
2711 +            () -> CompletableFuture.runAsync(null),
2712 +            () -> CompletableFuture.runAsync(null, exec),
2713 +            () -> CompletableFuture.runAsync(() -> {}, null),
2714 +
2715 +            () -> f.completeExceptionally(null),
2716 +
2717 +            () -> f.thenApply(null),
2718 +            () -> f.thenApplyAsync(null),
2719 +            () -> f.thenApplyAsync((x) -> x, null),
2720 +            () -> f.thenApplyAsync(null, exec),
2721 +
2722 +            () -> f.thenAccept(null),
2723 +            () -> f.thenAcceptAsync(null),
2724 +            () -> f.thenAcceptAsync((x) -> {} , null),
2725 +            () -> f.thenAcceptAsync(null, exec),
2726 +
2727 +            () -> f.thenRun(null),
2728 +            () -> f.thenRunAsync(null),
2729 +            () -> f.thenRunAsync(() -> {} , null),
2730 +            () -> f.thenRunAsync(null, exec),
2731 +
2732 +            () -> f.thenCombine(g, null),
2733 +            () -> f.thenCombineAsync(g, null),
2734 +            () -> f.thenCombineAsync(g, null, exec),
2735 +            () -> f.thenCombine(nullFuture, (x, y) -> x),
2736 +            () -> f.thenCombineAsync(nullFuture, (x, y) -> x),
2737 +            () -> f.thenCombineAsync(nullFuture, (x, y) -> x, exec),
2738 +            () -> f.thenCombineAsync(g, (x, y) -> x, null),
2739 +
2740 +            () -> f.thenAcceptBoth(g, null),
2741 +            () -> f.thenAcceptBothAsync(g, null),
2742 +            () -> f.thenAcceptBothAsync(g, null, exec),
2743 +            () -> f.thenAcceptBoth(nullFuture, (x, y) -> {}),
2744 +            () -> f.thenAcceptBothAsync(nullFuture, (x, y) -> {}),
2745 +            () -> f.thenAcceptBothAsync(nullFuture, (x, y) -> {}, exec),
2746 +            () -> f.thenAcceptBothAsync(g, (x, y) -> {}, null),
2747 +
2748 +            () -> f.runAfterBoth(g, null),
2749 +            () -> f.runAfterBothAsync(g, null),
2750 +            () -> f.runAfterBothAsync(g, null, exec),
2751 +            () -> f.runAfterBoth(nullFuture, () -> {}),
2752 +            () -> f.runAfterBothAsync(nullFuture, () -> {}),
2753 +            () -> f.runAfterBothAsync(nullFuture, () -> {}, exec),
2754 +            () -> f.runAfterBothAsync(g, () -> {}, null),
2755 +
2756 +            () -> f.applyToEither(g, null),
2757 +            () -> f.applyToEitherAsync(g, null),
2758 +            () -> f.applyToEitherAsync(g, null, exec),
2759 +            () -> f.applyToEither(nullFuture, (x) -> x),
2760 +            () -> f.applyToEitherAsync(nullFuture, (x) -> x),
2761 +            () -> f.applyToEitherAsync(nullFuture, (x) -> x, exec),
2762 +            () -> f.applyToEitherAsync(g, (x) -> x, null),
2763 +
2764 +            () -> f.acceptEither(g, null),
2765 +            () -> f.acceptEitherAsync(g, null),
2766 +            () -> f.acceptEitherAsync(g, null, exec),
2767 +            () -> f.acceptEither(nullFuture, (x) -> {}),
2768 +            () -> f.acceptEitherAsync(nullFuture, (x) -> {}),
2769 +            () -> f.acceptEitherAsync(nullFuture, (x) -> {}, exec),
2770 +            () -> f.acceptEitherAsync(g, (x) -> {}, null),
2771 +
2772 +            () -> f.runAfterEither(g, null),
2773 +            () -> f.runAfterEitherAsync(g, null),
2774 +            () -> f.runAfterEitherAsync(g, null, exec),
2775 +            () -> f.runAfterEither(nullFuture, () -> {}),
2776 +            () -> f.runAfterEitherAsync(nullFuture, () -> {}),
2777 +            () -> f.runAfterEitherAsync(nullFuture, () -> {}, exec),
2778 +            () -> f.runAfterEitherAsync(g, () -> {}, null),
2779 +
2780 +            () -> f.thenCompose(null),
2781 +            () -> f.thenComposeAsync(null),
2782 +            () -> f.thenComposeAsync(new CompletableFutureInc(ExecutionMode.EXECUTOR), null),
2783 +            () -> f.thenComposeAsync(null, exec),
2784 +
2785 +            () -> f.exceptionally(null),
2786 +
2787 +            () -> f.handle(null),
2788 +
2789 +            () -> CompletableFuture.allOf((CompletableFuture<?>)null),
2790 +            () -> CompletableFuture.allOf((CompletableFuture<?>[])null),
2791 +            () -> CompletableFuture.allOf(f, null),
2792 +            () -> CompletableFuture.allOf(null, f),
2793 +
2794 +            () -> CompletableFuture.anyOf((CompletableFuture<?>)null),
2795 +            () -> CompletableFuture.anyOf((CompletableFuture<?>[])null),
2796 +            () -> CompletableFuture.anyOf(f, null),
2797 +            () -> CompletableFuture.anyOf(null, f),
2798 +
2799 +            () -> f.obtrudeException(null),
2800 +        };
2801 +
2802 +        assertThrows(NullPointerException.class, throwingActions);
2803 +        assertEquals(0, exec.count.get());
2804 +    }
2805 +
2806 +    /**
2807 +     * toCompletableFuture returns this CompletableFuture.
2808 +     */
2809 +    public void testToCompletableFuture() {
2810 +        CompletableFuture<Integer> f = new CompletableFuture<>();
2811 +        assertSame(f, f.toCompletableFuture());
2812 +    }
2813 +
2814 +    /**
2815 +     * whenComplete action executes on normal completion, propagating
2816 +     * source result.
2817 +     */
2818 +    public void testWhenComplete_normalCompletion1() {
2819 +        for (ExecutionMode m : ExecutionMode.values())
2820 +        for (boolean createIncomplete : new boolean[] { true, false })
2821 +        for (Integer v1 : new Integer[] { 1, null })
2822 +    {
2823 +        final AtomicInteger a = new AtomicInteger(0);
2824 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2825 +        if (!createIncomplete) f.complete(v1);
2826 +        final CompletableFuture<Integer> g = m.whenComplete
2827 +            (f,
2828 +             (Integer x, Throwable t) -> {
2829 +                threadAssertSame(x, v1);
2830 +                threadAssertNull(t);
2831 +                a.getAndIncrement();
2832 +            });
2833 +        if (createIncomplete) f.complete(v1);
2834 +
2835 +        checkCompletedNormally(g, v1);
2836 +        checkCompletedNormally(f, v1);
2837 +        assertEquals(1, a.get());
2838 +    }}
2839 +
2840 +    /**
2841 +     * whenComplete action executes on exceptional completion, propagating
2842 +     * source result.
2843 +     */
2844 +    public void testWhenComplete_exceptionalCompletion() {
2845 +        for (ExecutionMode m : ExecutionMode.values())
2846 +        for (boolean createIncomplete : new boolean[] { true, false })
2847 +        for (Integer v1 : new Integer[] { 1, null })
2848 +    {
2849 +        final AtomicInteger a = new AtomicInteger(0);
2850 +        final CFException ex = new CFException();
2851 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2852 +        if (!createIncomplete) f.completeExceptionally(ex);
2853 +        final CompletableFuture<Integer> g = m.whenComplete
2854 +            (f,
2855 +             (Integer x, Throwable t) -> {
2856 +                threadAssertNull(x);
2857 +                threadAssertSame(t, ex);
2858 +                a.getAndIncrement();
2859 +            });
2860 +        if (createIncomplete) f.completeExceptionally(ex);
2861 +        checkCompletedWithWrappedCFException(f, ex);
2862 +        checkCompletedWithWrappedCFException(g, ex);
2863 +        assertEquals(1, a.get());
2864 +    }}
2865 +
2866 +    /**
2867 +     * whenComplete action executes on cancelled source, propagating
2868 +     * CancellationException.
2869 +     */
2870 +    public void testWhenComplete_sourceCancelled() {
2871 +        for (ExecutionMode m : ExecutionMode.values())
2872 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2873 +        for (boolean createIncomplete : new boolean[] { true, false })
2874 +    {
2875 +        final AtomicInteger a = new AtomicInteger(0);
2876 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2877 +        if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
2878 +        final CompletableFuture<Integer> g = m.whenComplete
2879 +            (f,
2880 +             (Integer x, Throwable t) -> {
2881 +                threadAssertNull(x);
2882 +                threadAssertTrue(t instanceof CancellationException);
2883 +                a.getAndIncrement();
2884 +            });
2885 +        if (createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
2886 +
2887 +        //try { g.join(); } catch (Throwable t) { throw new Error(t); }
2888 +        checkCompletedWithWrappedCancellationException(g);
2889 +        checkCancelled(f);
2890 +        assertEquals(1, a.get());
2891 +    }}
2892 +
2893 +    /**
2894 +     * If a whenComplete action throws an exception when triggered by
2895 +     * a normal completion, it completes exceptionally
2896 +     */
2897 +    public void testWhenComplete_actionFailed() {
2898 +        for (boolean createIncomplete : new boolean[] { true, false })
2899 +        for (ExecutionMode m : ExecutionMode.values())
2900 +        for (Integer v1 : new Integer[] { 1, null })
2901 +    {
2902 +        final AtomicInteger a = new AtomicInteger(0);
2903 +        final CFException ex = new CFException();
2904 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2905 +        if (!createIncomplete) f.complete(v1);
2906 +        final CompletableFuture<Integer> g = m.whenComplete
2907 +            (f,
2908 +             (Integer x, Throwable t) -> {
2909 +                threadAssertSame(x, v1);
2910 +                threadAssertNull(t);
2911 +                a.getAndIncrement();
2912 +                throw ex;
2913 +            });
2914 +        if (createIncomplete) f.complete(v1);
2915 +        checkCompletedNormally(f, v1);
2916 +        checkCompletedWithWrappedCFException(g, ex);
2917 +        assertEquals(1, a.get());
2918 +    }}
2919 +
2920 +    /**
2921 +     * If a whenComplete action throws an exception when triggered by
2922 +     * a source completion that also throws an exception, the source
2923 +     * exception takes precedence.
2924 +     */
2925 +    public void testWhenComplete_actionFailedSourceFailed() {
2926 +        for (boolean createIncomplete : new boolean[] { true, false })
2927 +        for (ExecutionMode m : ExecutionMode.values())
2928 +        for (Integer v1 : new Integer[] { 1, null })
2929 +    {
2930 +        final AtomicInteger a = new AtomicInteger(0);
2931 +        final CFException ex1 = new CFException();
2932 +        final CFException ex2 = new CFException();
2933 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2934 +
2935 +        if (!createIncomplete) f.completeExceptionally(ex1);
2936 +        final CompletableFuture<Integer> g = m.whenComplete
2937 +            (f,
2938 +             (Integer x, Throwable t) -> {
2939 +                threadAssertSame(t, ex1);
2940 +                threadAssertNull(x);
2941 +                a.getAndIncrement();
2942 +                throw ex2;
2943 +            });
2944 +        if (createIncomplete) f.completeExceptionally(ex1);
2945 +
2946 +        checkCompletedWithWrappedCFException(f, ex1);
2947 +        checkCompletedWithWrappedCFException(g, ex1);
2948 +        assertEquals(1, a.get());
2949 +    }}
2950 +
2951   }

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