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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 1.57 by jsr166, Mon Jun 2 22:48:50 2014 UTC

# Line 1 | Line 1
1   /*
2 < * Written by Doug Lea with assistance from members of JCP JSR-166
3 < * Expert Group and released to the public domain, as explained at
2 > * Written by Doug Lea and Martin Buchholz with assistance from
3 > * members of JCP JSR-166 Expert Group and released to the public
4 > * domain, as explained at
5   * http://creativecommons.org/publicdomain/zero/1.0/
5 * Other contributors include Andrew Wright, Jeffrey Hayes,
6 * Pat Fisher, Mike Judd.
6   */
7  
8   import junit.framework.*;
9   import java.util.concurrent.Callable;
10 + import java.util.concurrent.Executor;
11 + import java.util.concurrent.ExecutorService;
12 + import java.util.concurrent.Executors;
13   import java.util.concurrent.CancellationException;
14   import java.util.concurrent.CountDownLatch;
15   import java.util.concurrent.ExecutionException;
16   import java.util.concurrent.Future;
17   import java.util.concurrent.CompletableFuture;
18 + import java.util.concurrent.CompletionException;
19 + import java.util.concurrent.CompletionStage;
20 + import java.util.concurrent.ForkJoinPool;
21 + import java.util.concurrent.ForkJoinTask;
22   import java.util.concurrent.TimeoutException;
23   import java.util.concurrent.atomic.AtomicInteger;
24   import static java.util.concurrent.TimeUnit.MILLISECONDS;
25   import static java.util.concurrent.TimeUnit.SECONDS;
26   import java.util.*;
27 + import java.util.function.Supplier;
28 + import java.util.function.Consumer;
29 + import java.util.function.BiConsumer;
30 + import java.util.function.Function;
31 + import java.util.function.BiFunction;
32  
33   public class CompletableFutureTest extends JSR166TestCase {
34  
# Line 28 | Line 39 | public class CompletableFutureTest exten
39          return new TestSuite(CompletableFutureTest.class);
40      }
41  
42 +    static class CFException extends RuntimeException {}
43 +
44 +    void checkIncomplete(CompletableFuture<?> f) {
45 +        assertFalse(f.isDone());
46 +        assertFalse(f.isCancelled());
47 +        assertTrue(f.toString().contains("[Not completed]"));
48 +        try {
49 +            assertNull(f.getNow(null));
50 +        } catch (Throwable fail) { threadUnexpectedException(fail); }
51 +        try {
52 +            f.get(0L, SECONDS);
53 +            shouldThrow();
54 +        }
55 +        catch (TimeoutException success) {}
56 +        catch (Throwable fail) { threadUnexpectedException(fail); }
57 +    }
58 +
59 +    <T> void checkCompletedNormally(CompletableFuture<T> f, T value) {
60 +        try {
61 +            assertEquals(value, f.get(LONG_DELAY_MS, MILLISECONDS));
62 +        } catch (Throwable fail) { threadUnexpectedException(fail); }
63 +        try {
64 +            assertEquals(value, f.join());
65 +        } catch (Throwable fail) { threadUnexpectedException(fail); }
66 +        try {
67 +            assertEquals(value, f.getNow(null));
68 +        } catch (Throwable fail) { threadUnexpectedException(fail); }
69 +        try {
70 +            assertEquals(value, f.get());
71 +        } catch (Throwable fail) { threadUnexpectedException(fail); }
72 +        assertTrue(f.isDone());
73 +        assertFalse(f.isCancelled());
74 +        assertFalse(f.isCompletedExceptionally());
75 +        assertTrue(f.toString().contains("[Completed normally]"));
76 +    }
77 +
78 +    void checkCompletedWithWrappedCFException(CompletableFuture<?> f) {
79 +        try {
80 +            f.get(LONG_DELAY_MS, MILLISECONDS);
81 +            shouldThrow();
82 +        } catch (ExecutionException success) {
83 +            assertTrue(success.getCause() instanceof CFException);
84 +        } catch (Throwable fail) { threadUnexpectedException(fail); }
85 +        try {
86 +            f.join();
87 +            shouldThrow();
88 +        } catch (CompletionException success) {
89 +            assertTrue(success.getCause() instanceof CFException);
90 +        }
91 +        try {
92 +            f.getNow(null);
93 +            shouldThrow();
94 +        } catch (CompletionException success) {
95 +            assertTrue(success.getCause() instanceof CFException);
96 +        }
97 +        try {
98 +            f.get();
99 +            shouldThrow();
100 +        } catch (ExecutionException success) {
101 +            assertTrue(success.getCause() instanceof CFException);
102 +        } catch (Throwable fail) { threadUnexpectedException(fail); }
103 +        assertTrue(f.isDone());
104 +        assertFalse(f.isCancelled());
105 +        assertTrue(f.toString().contains("[Completed exceptionally]"));
106 +    }
107 +
108 +    void checkCompletedWithWrappedCFException(CompletableFuture<?> f,
109 +                                              CFException ex) {
110 +        try {
111 +            f.get(LONG_DELAY_MS, MILLISECONDS);
112 +            shouldThrow();
113 +        } catch (ExecutionException success) {
114 +            assertSame(ex, success.getCause());
115 +        } catch (Throwable fail) { threadUnexpectedException(fail); }
116 +        try {
117 +            f.join();
118 +            shouldThrow();
119 +        } catch (CompletionException success) {
120 +            assertSame(ex, success.getCause());
121 +        }
122 +        try {
123 +            f.getNow(null);
124 +            shouldThrow();
125 +        } catch (CompletionException success) {
126 +            assertSame(ex, success.getCause());
127 +        }
128 +        try {
129 +            f.get();
130 +            shouldThrow();
131 +        } catch (ExecutionException success) {
132 +            assertSame(ex, success.getCause());
133 +        } catch (Throwable fail) { threadUnexpectedException(fail); }
134 +        assertTrue(f.isDone());
135 +        assertFalse(f.isCancelled());
136 +        assertTrue(f.toString().contains("[Completed exceptionally]"));
137 +    }
138 +
139 +    void checkCancelled(CompletableFuture<?> f) {
140 +        try {
141 +            f.get(LONG_DELAY_MS, MILLISECONDS);
142 +            shouldThrow();
143 +        } catch (CancellationException success) {
144 +        } catch (Throwable fail) { threadUnexpectedException(fail); }
145 +        try {
146 +            f.join();
147 +            shouldThrow();
148 +        } catch (CancellationException success) {}
149 +        try {
150 +            f.getNow(null);
151 +            shouldThrow();
152 +        } catch (CancellationException success) {}
153 +        try {
154 +            f.get();
155 +            shouldThrow();
156 +        } catch (CancellationException success) {
157 +        } catch (Throwable fail) { threadUnexpectedException(fail); }
158 +        assertTrue(f.isDone());
159 +        assertTrue(f.isCompletedExceptionally());
160 +        assertTrue(f.isCancelled());
161 +        assertTrue(f.toString().contains("[Completed exceptionally]"));
162 +    }
163 +
164 +    void checkCompletedWithWrappedCancellationException(CompletableFuture<?> f) {
165 +        try {
166 +            f.get(LONG_DELAY_MS, MILLISECONDS);
167 +            shouldThrow();
168 +        } catch (ExecutionException success) {
169 +            assertTrue(success.getCause() instanceof CancellationException);
170 +        } catch (Throwable fail) { threadUnexpectedException(fail); }
171 +        try {
172 +            f.join();
173 +            shouldThrow();
174 +        } catch (CompletionException success) {
175 +            assertTrue(success.getCause() instanceof CancellationException);
176 +        }
177 +        try {
178 +            f.getNow(null);
179 +            shouldThrow();
180 +        } catch (CompletionException success) {
181 +            assertTrue(success.getCause() instanceof CancellationException);
182 +        }
183 +        try {
184 +            f.get();
185 +            shouldThrow();
186 +        } catch (ExecutionException success) {
187 +            assertTrue(success.getCause() instanceof CancellationException);
188 +        } catch (Throwable fail) { threadUnexpectedException(fail); }
189 +        assertTrue(f.isDone());
190 +        assertFalse(f.isCancelled());
191 +        assertTrue(f.isCompletedExceptionally());
192 +        assertTrue(f.toString().contains("[Completed exceptionally]"));
193 +    }
194 +
195 +    /**
196 +     * A newly constructed CompletableFuture is incomplete, as indicated
197 +     * by methods isDone, isCancelled, and getNow
198 +     */
199 +    public void testConstructor() {
200 +        CompletableFuture<Integer> f = new CompletableFuture<>();
201 +        checkIncomplete(f);
202 +    }
203 +
204 +    /**
205 +     * complete completes normally, as indicated by methods isDone,
206 +     * isCancelled, join, get, and getNow
207 +     */
208 +    public void testComplete() {
209 +        CompletableFuture<Integer> f = new CompletableFuture<>();
210 +        checkIncomplete(f);
211 +        f.complete(one);
212 +        checkCompletedNormally(f, one);
213 +    }
214 +
215 +    /**
216 +     * completeExceptionally completes exceptionally, as indicated by
217 +     * methods isDone, isCancelled, join, get, and getNow
218 +     */
219 +    public void testCompleteExceptionally() {
220 +        CompletableFuture<Integer> f = new CompletableFuture<>();
221 +        checkIncomplete(f);
222 +        f.completeExceptionally(new CFException());
223 +        checkCompletedWithWrappedCFException(f);
224 +    }
225 +
226 +    /**
227 +     * cancel completes exceptionally and reports cancelled, as indicated by
228 +     * methods isDone, isCancelled, join, get, and getNow
229 +     */
230 +    public void testCancel() {
231 +        CompletableFuture<Integer> f = new CompletableFuture<>();
232 +        checkIncomplete(f);
233 +        assertTrue(f.cancel(true));
234 +        checkCancelled(f);
235 +    }
236 +
237 +    /**
238 +     * obtrudeValue forces completion with given value
239 +     */
240 +    public void testObtrudeValue() {
241 +        CompletableFuture<Integer> f = new CompletableFuture<>();
242 +        checkIncomplete(f);
243 +        f.complete(one);
244 +        checkCompletedNormally(f, one);
245 +        f.obtrudeValue(three);
246 +        checkCompletedNormally(f, three);
247 +        f.obtrudeValue(two);
248 +        checkCompletedNormally(f, two);
249 +        f = new CompletableFuture<>();
250 +        f.obtrudeValue(three);
251 +        checkCompletedNormally(f, three);
252 +        f.obtrudeValue(null);
253 +        checkCompletedNormally(f, null);
254 +        f = new CompletableFuture<>();
255 +        f.completeExceptionally(new CFException());
256 +        f.obtrudeValue(four);
257 +        checkCompletedNormally(f, four);
258 +    }
259 +
260 +    /**
261 +     * obtrudeException forces completion with given exception
262 +     */
263 +    public void testObtrudeException() {
264 +        CompletableFuture<Integer> f = new CompletableFuture<>();
265 +        checkIncomplete(f);
266 +        f.complete(one);
267 +        checkCompletedNormally(f, one);
268 +        f.obtrudeException(new CFException());
269 +        checkCompletedWithWrappedCFException(f);
270 +        f = new CompletableFuture<>();
271 +        f.obtrudeException(new CFException());
272 +        checkCompletedWithWrappedCFException(f);
273 +        f = new CompletableFuture<>();
274 +        f.completeExceptionally(new CFException());
275 +        f.obtrudeValue(four);
276 +        checkCompletedNormally(f, four);
277 +        f.obtrudeException(new CFException());
278 +        checkCompletedWithWrappedCFException(f);
279 +    }
280 +
281 +    /**
282 +     * getNumberOfDependents returns number of dependent tasks
283 +     */
284 +    public void testGetNumberOfDependents() {
285 +        CompletableFuture<Integer> f = new CompletableFuture<>();
286 +        assertEquals(0, f.getNumberOfDependents());
287 +        CompletableFuture g = f.thenRun(new Noop(ExecutionMode.DEFAULT));
288 +        assertEquals(1, f.getNumberOfDependents());
289 +        assertEquals(0, g.getNumberOfDependents());
290 +        CompletableFuture h = f.thenRun(new Noop(ExecutionMode.DEFAULT));
291 +        assertEquals(2, f.getNumberOfDependents());
292 +        f.complete(1);
293 +        checkCompletedNormally(g, null);
294 +        assertEquals(0, f.getNumberOfDependents());
295 +        assertEquals(0, g.getNumberOfDependents());
296 +    }
297 +
298 +    /**
299 +     * toString indicates current completion state
300 +     */
301      public void testToString() {
302          CompletableFuture<String> f;
303 <        assertTrue(new CompletableFuture<String>().toString()
34 <                   .contains("[Not completed]"));
303 >
304          f = new CompletableFuture<String>();
305 +        assertTrue(f.toString().contains("[Not completed]"));
306 +
307          f.complete("foo");
308          assertTrue(f.toString().contains("[Completed normally]"));
309 +
310          f = new CompletableFuture<String>();
311          f.completeExceptionally(new IndexOutOfBoundsException());
312          assertTrue(f.toString().contains("[Completed exceptionally]"));
313      }
314 +
315 +    /**
316 +     * completedFuture returns a completed CompletableFuture with given value
317 +     */
318 +    public void testCompletedFuture() {
319 +        CompletableFuture<String> f = CompletableFuture.completedFuture("test");
320 +        checkCompletedNormally(f, "test");
321 +    }
322 +
323 +    // Choose non-commutative actions for better coverage
324 +
325 +    // A non-commutative function that handles and produces null values as well.
326 +    static Integer subtract(Integer x, Integer y) {
327 +        return (x == null && y == null) ? null :
328 +            ((x == null) ? 42 : x.intValue())
329 +            - ((y == null) ? 99 : y.intValue());
330 +    }
331 +
332 +    // A function that handles and produces null values as well.
333 +    static Integer inc(Integer x) {
334 +        return (x == null) ? null : x + 1;
335 +    }
336 +
337 +    static final Supplier<Integer> supplyOne =
338 +        () -> Integer.valueOf(1);
339 +    static final Function<Integer, Integer> inc =
340 +        (Integer x) -> Integer.valueOf(x.intValue() + 1);
341 +    static final BiFunction<Integer, Integer, Integer> subtract =
342 +        (Integer x, Integer y) -> subtract(x, y);
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 +    static final class SubtractAction implements BiConsumer<Integer, Integer> {
363 +        final ExecutionMode m;
364 +        int invocationCount = 0;
365 +        Integer value;
366 +        // Check this action was invoked exactly once when result is computed.
367 +        SubtractAction(ExecutionMode m) { this.m = m; }
368 +        public void accept(Integer x, Integer y) {
369 +            m.checkExecutionMode();
370 +            invocationCount++;
371 +            value = subtract(x, y);
372 +        }
373 +    }
374 +    static final class SubtractFunction implements BiFunction<Integer, Integer, Integer> {
375 +        final ExecutionMode m;
376 +        int invocationCount = 0;
377 +        Integer value;
378 +        // Check this action was invoked exactly once when result is computed.
379 +        SubtractFunction(ExecutionMode m) { this.m = m; }
380 +        public Integer apply(Integer x, Integer y) {
381 +            m.checkExecutionMode();
382 +            invocationCount++;
383 +            return value = subtract(x, y);
384 +        }
385 +    }
386 +    static final class Noop implements Runnable {
387 +        final ExecutionMode m;
388 +        int invocationCount = 0;
389 +        Noop(ExecutionMode m) { this.m = m; }
390 +        public void run() {
391 +            m.checkExecutionMode();
392 +            invocationCount++;
393 +        }
394 +    }
395 +
396 +    static final class FailingSupplier implements Supplier<Integer> {
397 +        final ExecutionMode m;
398 +        int invocationCount = 0;
399 +        FailingSupplier(ExecutionMode m) { this.m = m; }
400 +        public Integer get() {
401 +            m.checkExecutionMode();
402 +            invocationCount++;
403 +            throw new CFException();
404 +        }
405 +    }
406 +    static final class FailingConsumer implements Consumer<Integer> {
407 +        final ExecutionMode m;
408 +        int invocationCount = 0;
409 +        FailingConsumer(ExecutionMode m) { this.m = m; }
410 +        public void accept(Integer x) {
411 +            m.checkExecutionMode();
412 +            invocationCount++;
413 +            throw new CFException();
414 +        }
415 +    }
416 +    static final class FailingBiConsumer implements BiConsumer<Integer, Integer> {
417 +        final ExecutionMode m;
418 +        int invocationCount = 0;
419 +        FailingBiConsumer(ExecutionMode m) { this.m = m; }
420 +        public void accept(Integer x, Integer y) {
421 +            m.checkExecutionMode();
422 +            invocationCount++;
423 +            throw new CFException();
424 +        }
425 +    }
426 +    static final class FailingFunction implements Function<Integer, Integer> {
427 +        final ExecutionMode m;
428 +        int invocationCount = 0;
429 +        FailingFunction(ExecutionMode m) { this.m = m; }
430 +        public Integer apply(Integer x) {
431 +            m.checkExecutionMode();
432 +            invocationCount++;
433 +            throw new CFException();
434 +        }
435 +    }
436 +    static final class FailingBiFunction implements BiFunction<Integer, Integer, Integer> {
437 +        final ExecutionMode m;
438 +        int invocationCount = 0;
439 +        FailingBiFunction(ExecutionMode m) { this.m = m; }
440 +        public Integer apply(Integer x, Integer y) {
441 +            m.checkExecutionMode();
442 +            invocationCount++;
443 +            throw new CFException();
444 +        }
445 +    }
446 +    static final class FailingRunnable implements Runnable {
447 +        final ExecutionMode m;
448 +        int invocationCount = 0;
449 +        FailingRunnable(ExecutionMode m) { this.m = m; }
450 +        public void run() {
451 +            m.checkExecutionMode();
452 +            invocationCount++;
453 +            throw new CFException();
454 +        }
455 +    }
456 +
457 +    static final class CompletableFutureInc
458 +        implements Function<Integer, CompletableFuture<Integer>> {
459 +        final ExecutionMode m;
460 +        int invocationCount = 0;
461 +        CompletableFutureInc(ExecutionMode m) { this.m = m; }
462 +        public CompletableFuture<Integer> apply(Integer x) {
463 +            m.checkExecutionMode();
464 +            invocationCount++;
465 +            CompletableFuture<Integer> f = new CompletableFuture<>();
466 +            f.complete(inc(x));
467 +            return f;
468 +        }
469 +    }
470 +
471 +    static final class FailingCompletableFutureFunction
472 +        implements Function<Integer, CompletableFuture<Integer>> {
473 +        final ExecutionMode m;
474 +        int invocationCount = 0;
475 +        FailingCompletableFutureFunction(ExecutionMode m) { this.m = m; }
476 +        public CompletableFuture<Integer> apply(Integer x) {
477 +            m.checkExecutionMode();
478 +            invocationCount++;
479 +            throw new CFException();
480 +        }
481 +    }
482 +
483 +    // Used for explicit executor tests
484 +    static final class ThreadExecutor implements Executor {
485 +        final AtomicInteger count = new AtomicInteger(0);
486 +        static final ThreadGroup tg = new ThreadGroup("ThreadExecutor");
487 +        static boolean startedCurrentThread() {
488 +            return Thread.currentThread().getThreadGroup() == tg;
489 +        }
490 +
491 +        public void execute(Runnable r) {
492 +            count.getAndIncrement();
493 +            new Thread(tg, r).start();
494 +        }
495 +    }
496 +
497 +    /**
498 +     * Permits the testing of parallel code for the 3 different
499 +     * execution modes without repeating all the testing code.
500 +     */
501 +    enum ExecutionMode {
502 +        DEFAULT {
503 +            public void checkExecutionMode() {
504 +                assertNull(ForkJoinTask.getPool());
505 +            }
506 +            public CompletableFuture<Void> runAsync(Runnable a) {
507 +                throw new UnsupportedOperationException();
508 +            }
509 +            public <T> CompletableFuture<Void> thenRun
510 +                (CompletableFuture<T> f, Runnable a) {
511 +                return f.thenRun(a);
512 +            }
513 +            public <T> CompletableFuture<Void> thenAccept
514 +                (CompletableFuture<T> f, Consumer<? super T> a) {
515 +                return f.thenAccept(a);
516 +            }
517 +            public <T,U> CompletableFuture<U> thenApply
518 +                (CompletableFuture<T> f, Function<? super T,U> a) {
519 +                return f.thenApply(a);
520 +            }
521 +            public <T,U> CompletableFuture<U> thenCompose
522 +                (CompletableFuture<T> f,
523 +                 Function<? super T,? extends CompletionStage<U>> a) {
524 +                return f.thenCompose(a);
525 +            }
526 +            public <T,U> CompletableFuture<U> handle
527 +                (CompletableFuture<T> f,
528 +                 BiFunction<? super T,Throwable,? extends U> a) {
529 +                return f.handle(a);
530 +            }
531 +            public <T> CompletableFuture<T> whenComplete
532 +                (CompletableFuture<T> f,
533 +                 BiConsumer<? super T,? super Throwable> a) {
534 +                return f.whenComplete(a);
535 +            }
536 +            public <T,U> CompletableFuture<Void> runAfterBoth
537 +                (CompletableFuture<T> f, CompletableFuture<U> g, Runnable a) {
538 +                return f.runAfterBoth(g, a);
539 +            }
540 +            public <T,U> CompletableFuture<Void> thenAcceptBoth
541 +                (CompletableFuture<T> f,
542 +                 CompletionStage<? extends U> g,
543 +                 BiConsumer<? super T,? super U> a) {
544 +                return f.thenAcceptBoth(g, a);
545 +            }
546 +            public <T,U,V> CompletableFuture<V> thenCombine
547 +                (CompletableFuture<T> f,
548 +                 CompletionStage<? extends U> g,
549 +                 BiFunction<? super T,? super U,? extends V> a) {
550 +                return f.thenCombine(g, a);
551 +            }
552 +            public <T> CompletableFuture<Void> runAfterEither
553 +                (CompletableFuture<T> f,
554 +                 CompletionStage<?> g,
555 +                 java.lang.Runnable a) {
556 +                return f.runAfterEither(g, a);
557 +            }
558 +            public <T> CompletableFuture<Void> acceptEither
559 +                (CompletableFuture<T> f,
560 +                 CompletionStage<? extends T> g,
561 +                 Consumer<? super T> a) {
562 +                return f.acceptEither(g, a);
563 +            }
564 +            public <T,U> CompletableFuture<U> applyToEither
565 +                (CompletableFuture<T> f,
566 +                 CompletionStage<? extends T> g,
567 +                 Function<? super T,U> a) {
568 +                return f.applyToEither(g, a);
569 +            }
570 +        },
571 +
572 +        ASYNC {
573 +            public void checkExecutionMode() {
574 +                assertSame(ForkJoinPool.commonPool(),
575 +                           ForkJoinTask.getPool());
576 +            }
577 +            public CompletableFuture<Void> runAsync(Runnable a) {
578 +                return CompletableFuture.runAsync(a);
579 +            }
580 +            public <T> CompletableFuture<Void> thenRun
581 +                (CompletableFuture<T> f, Runnable a) {
582 +                return f.thenRunAsync(a);
583 +            }
584 +            public <T> CompletableFuture<Void> thenAccept
585 +                (CompletableFuture<T> f, Consumer<? super T> a) {
586 +                return f.thenAcceptAsync(a);
587 +            }
588 +            public <T,U> CompletableFuture<U> thenApply
589 +                (CompletableFuture<T> f, Function<? super T,U> a) {
590 +                return f.thenApplyAsync(a);
591 +            }
592 +            public <T,U> CompletableFuture<U> thenCompose
593 +                (CompletableFuture<T> f,
594 +                 Function<? super T,? extends CompletionStage<U>> a) {
595 +                return f.thenComposeAsync(a);
596 +            }
597 +            public <T,U> CompletableFuture<U> handle
598 +                (CompletableFuture<T> f,
599 +                 BiFunction<? super T,Throwable,? extends U> a) {
600 +                return f.handleAsync(a);
601 +            }
602 +            public <T> CompletableFuture<T> whenComplete
603 +                (CompletableFuture<T> f,
604 +                 BiConsumer<? super T,? super Throwable> a) {
605 +                return f.whenCompleteAsync(a);
606 +            }
607 +            public <T,U> CompletableFuture<Void> runAfterBoth
608 +                (CompletableFuture<T> f, CompletableFuture<U> g, Runnable a) {
609 +                return f.runAfterBothAsync(g, a);
610 +            }
611 +            public <T,U> CompletableFuture<Void> thenAcceptBoth
612 +                (CompletableFuture<T> f,
613 +                 CompletionStage<? extends U> g,
614 +                 BiConsumer<? super T,? super U> a) {
615 +                return f.thenAcceptBothAsync(g, a);
616 +            }
617 +            public <T,U,V> CompletableFuture<V> thenCombine
618 +                (CompletableFuture<T> f,
619 +                 CompletionStage<? extends U> g,
620 +                 BiFunction<? super T,? super U,? extends V> a) {
621 +                return f.thenCombineAsync(g, a);
622 +            }
623 +            public <T> CompletableFuture<Void> runAfterEither
624 +                (CompletableFuture<T> f,
625 +                 CompletionStage<?> g,
626 +                 java.lang.Runnable a) {
627 +                return f.runAfterEitherAsync(g, a);
628 +            }
629 +            public <T> CompletableFuture<Void> acceptEither
630 +                (CompletableFuture<T> f,
631 +                 CompletionStage<? extends T> g,
632 +                 Consumer<? super T> a) {
633 +                return f.acceptEitherAsync(g, a);
634 +            }
635 +            public <T,U> CompletableFuture<U> applyToEither
636 +                (CompletableFuture<T> f,
637 +                 CompletionStage<? extends T> g,
638 +                 Function<? super T,U> a) {
639 +                return f.applyToEitherAsync(g, a);
640 +            }
641 +        },
642 +
643 +        EXECUTOR {
644 +            public void checkExecutionMode() {
645 +                assertTrue(ThreadExecutor.startedCurrentThread());
646 +            }
647 +            public CompletableFuture<Void> runAsync(Runnable a) {
648 +                return CompletableFuture.runAsync(a, new ThreadExecutor());
649 +            }
650 +            public <T> CompletableFuture<Void> thenRun
651 +                (CompletableFuture<T> f, Runnable a) {
652 +                return f.thenRunAsync(a, new ThreadExecutor());
653 +            }
654 +            public <T> CompletableFuture<Void> thenAccept
655 +                (CompletableFuture<T> f, Consumer<? super T> a) {
656 +                return f.thenAcceptAsync(a, new ThreadExecutor());
657 +            }
658 +            public <T,U> CompletableFuture<U> thenApply
659 +                (CompletableFuture<T> f, Function<? super T,U> a) {
660 +                return f.thenApplyAsync(a, new ThreadExecutor());
661 +            }
662 +            public <T,U> CompletableFuture<U> thenCompose
663 +                (CompletableFuture<T> f,
664 +                 Function<? super T,? extends CompletionStage<U>> a) {
665 +                return f.thenComposeAsync(a, new ThreadExecutor());
666 +            }
667 +            public <T,U> CompletableFuture<U> handle
668 +                (CompletableFuture<T> f,
669 +                 BiFunction<? super T,Throwable,? extends U> a) {
670 +                return f.handleAsync(a, new ThreadExecutor());
671 +            }
672 +            public <T> CompletableFuture<T> whenComplete
673 +                (CompletableFuture<T> f,
674 +                 BiConsumer<? super T,? super Throwable> a) {
675 +                return f.whenCompleteAsync(a, new ThreadExecutor());
676 +            }
677 +            public <T,U> CompletableFuture<Void> runAfterBoth
678 +                (CompletableFuture<T> f, CompletableFuture<U> g, Runnable a) {
679 +                return f.runAfterBothAsync(g, a, new ThreadExecutor());
680 +            }
681 +            public <T,U> CompletableFuture<Void> thenAcceptBoth
682 +                (CompletableFuture<T> f,
683 +                 CompletionStage<? extends U> g,
684 +                 BiConsumer<? super T,? super U> a) {
685 +                return f.thenAcceptBothAsync(g, a, new ThreadExecutor());
686 +            }
687 +            public <T,U,V> CompletableFuture<V> thenCombine
688 +                (CompletableFuture<T> f,
689 +                 CompletionStage<? extends U> g,
690 +                 BiFunction<? super T,? super U,? extends V> a) {
691 +                return f.thenCombineAsync(g, a, new ThreadExecutor());
692 +            }
693 +            public <T> CompletableFuture<Void> runAfterEither
694 +                (CompletableFuture<T> f,
695 +                 CompletionStage<?> g,
696 +                 java.lang.Runnable a) {
697 +                return f.runAfterEitherAsync(g, a, new ThreadExecutor());
698 +            }
699 +            public <T> CompletableFuture<Void> acceptEither
700 +                (CompletableFuture<T> f,
701 +                 CompletionStage<? extends T> g,
702 +                 Consumer<? super T> a) {
703 +                return f.acceptEitherAsync(g, a, new ThreadExecutor());
704 +            }
705 +            public <T,U> CompletableFuture<U> applyToEither
706 +                (CompletableFuture<T> f,
707 +                 CompletionStage<? extends T> g,
708 +                 Function<? super T,U> a) {
709 +                return f.applyToEitherAsync(g, a, new ThreadExecutor());
710 +            }
711 +        };
712 +
713 +        public abstract void checkExecutionMode();
714 +        public abstract CompletableFuture<Void> runAsync(Runnable a);
715 +        public abstract <T> CompletableFuture<Void> thenRun
716 +            (CompletableFuture<T> f, Runnable a);
717 +        public abstract <T> CompletableFuture<Void> thenAccept
718 +            (CompletableFuture<T> f, Consumer<? super T> a);
719 +        public abstract <T,U> CompletableFuture<U> thenApply
720 +            (CompletableFuture<T> f, Function<? super T,U> a);
721 +        public abstract <T,U> CompletableFuture<U> thenCompose
722 +            (CompletableFuture<T> f,
723 +             Function<? super T,? extends CompletionStage<U>> a);
724 +        public abstract <T,U> CompletableFuture<U> handle
725 +            (CompletableFuture<T> f,
726 +             BiFunction<? super T,Throwable,? extends U> a);
727 +        public abstract <T> CompletableFuture<T> whenComplete
728 +            (CompletableFuture<T> f,
729 +             BiConsumer<? super T,? super Throwable> a);
730 +        public abstract <T,U> CompletableFuture<Void> runAfterBoth
731 +            (CompletableFuture<T> f, CompletableFuture<U> g, Runnable a);
732 +        public abstract <T,U> CompletableFuture<Void> thenAcceptBoth
733 +            (CompletableFuture<T> f,
734 +             CompletionStage<? extends U> g,
735 +             BiConsumer<? super T,? super U> a);
736 +        public abstract <T,U,V> CompletableFuture<V> thenCombine
737 +            (CompletableFuture<T> f,
738 +             CompletionStage<? extends U> g,
739 +             BiFunction<? super T,? super U,? extends V> a);
740 +        public abstract <T> CompletableFuture<Void> runAfterEither
741 +            (CompletableFuture<T> f,
742 +             CompletionStage<?> g,
743 +             java.lang.Runnable a);
744 +        public abstract <T> CompletableFuture<Void> acceptEither
745 +            (CompletableFuture<T> f,
746 +             CompletionStage<? extends T> g,
747 +             Consumer<? super T> a);
748 +        public abstract <T,U> CompletableFuture<U> applyToEither
749 +            (CompletableFuture<T> f,
750 +             CompletionStage<? extends T> g,
751 +             Function<? super T,U> a);
752 +    }
753 +
754 +    /**
755 +     * exceptionally action is not invoked when source completes
756 +     * normally, and source result is propagated
757 +     */
758 +    public void testExceptionally_normalCompletion() {
759 +        for (boolean createIncomplete : new boolean[] { true, false })
760 +        for (Integer v1 : new Integer[] { 1, null })
761 +    {
762 +        final AtomicInteger a = new AtomicInteger(0);
763 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
764 +        if (!createIncomplete) f.complete(v1);
765 +        final CompletableFuture<Integer> g = f.exceptionally
766 +            ((Throwable t) -> {
767 +                // Should not be called
768 +                a.getAndIncrement();
769 +                throw new AssertionError();
770 +            });
771 +        if (createIncomplete) f.complete(v1);
772 +
773 +        checkCompletedNormally(g, v1);
774 +        checkCompletedNormally(f, v1);
775 +        assertEquals(0, a.get());
776 +    }}
777 +
778 +
779 +    /**
780 +     * exceptionally action completes with function value on source
781 +     * exception
782 +     */
783 +    public void testExceptionally_exceptionalCompletion() {
784 +        for (boolean createIncomplete : new boolean[] { true, false })
785 +        for (Integer v1 : new Integer[] { 1, null })
786 +    {
787 +        final AtomicInteger a = new AtomicInteger(0);
788 +        final CFException ex = new CFException();
789 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
790 +        if (!createIncomplete) f.completeExceptionally(ex);
791 +        final CompletableFuture<Integer> g = f.exceptionally
792 +            ((Throwable t) -> {
793 +                ExecutionMode.DEFAULT.checkExecutionMode();
794 +                threadAssertSame(t, ex);
795 +                a.getAndIncrement();
796 +                return v1;
797 +            });
798 +        if (createIncomplete) f.completeExceptionally(ex);
799 +
800 +        checkCompletedNormally(g, v1);
801 +        assertEquals(1, a.get());
802 +    }}
803 +
804 +    public void testExceptionally_exceptionalCompletionActionFailed() {
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 ex1 = new CFException();
810 +        final CFException ex2 = new CFException();
811 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
812 +        if (!createIncomplete) f.completeExceptionally(ex1);
813 +        final CompletableFuture<Integer> g = f.exceptionally
814 +            ((Throwable t) -> {
815 +                ExecutionMode.DEFAULT.checkExecutionMode();
816 +                threadAssertSame(t, ex1);
817 +                a.getAndIncrement();
818 +                throw ex2;
819 +            });
820 +        if (createIncomplete) f.completeExceptionally(ex1);
821 +
822 +        checkCompletedWithWrappedCFException(g, ex2);
823 +        assertEquals(1, a.get());
824 +    }}
825 +
826 +    /**
827 +     * handle action completes normally with function value on normal
828 +     * completion of source
829 +     */
830 +    public void testHandle_normalCompletion() {
831 +        for (ExecutionMode m : ExecutionMode.values())
832 +        for (boolean createIncomplete : new boolean[] { true, false })
833 +        for (Integer v1 : new Integer[] { 1, null })
834 +    {
835 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
836 +        final AtomicInteger a = new AtomicInteger(0);
837 +        if (!createIncomplete) f.complete(v1);
838 +        final CompletableFuture<Integer> g = m.handle
839 +            (f,
840 +             (Integer x, Throwable t) -> {
841 +                m.checkExecutionMode();
842 +                threadAssertSame(x, v1);
843 +                threadAssertNull(t);
844 +                a.getAndIncrement();
845 +                return inc(v1);
846 +            });
847 +        if (createIncomplete) f.complete(v1);
848 +
849 +        checkCompletedNormally(g, inc(v1));
850 +        checkCompletedNormally(f, v1);
851 +        assertEquals(1, a.get());
852 +    }}
853 +
854 +    /**
855 +     * handle action completes normally with function value on
856 +     * exceptional completion of source
857 +     */
858 +    public void testHandle_exceptionalCompletion() {
859 +        for (ExecutionMode m : ExecutionMode.values())
860 +        for (boolean createIncomplete : new boolean[] { true, false })
861 +        for (Integer v1 : new Integer[] { 1, null })
862 +    {
863 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
864 +        final AtomicInteger a = new AtomicInteger(0);
865 +        final CFException ex = new CFException();
866 +        if (!createIncomplete) f.completeExceptionally(ex);
867 +        final CompletableFuture<Integer> g = m.handle
868 +            (f,
869 +             (Integer x, Throwable t) -> {
870 +                m.checkExecutionMode();
871 +                threadAssertNull(x);
872 +                threadAssertSame(t, ex);
873 +                a.getAndIncrement();
874 +                return v1;
875 +            });
876 +        if (createIncomplete) f.completeExceptionally(ex);
877 +
878 +        checkCompletedNormally(g, v1);
879 +        checkCompletedWithWrappedCFException(f, ex);
880 +        assertEquals(1, a.get());
881 +    }}
882 +
883 +    /**
884 +     * handle action completes normally with function value on
885 +     * cancelled source
886 +     */
887 +    public void testHandle_sourceCancelled() {
888 +        for (ExecutionMode m : ExecutionMode.values())
889 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
890 +        for (boolean createIncomplete : new boolean[] { true, false })
891 +        for (Integer v1 : new Integer[] { 1, null })
892 +    {
893 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
894 +        final AtomicInteger a = new AtomicInteger(0);
895 +        if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
896 +        final CompletableFuture<Integer> g = m.handle
897 +            (f,
898 +             (Integer x, Throwable t) -> {
899 +                m.checkExecutionMode();
900 +                threadAssertNull(x);
901 +                threadAssertTrue(t instanceof CancellationException);
902 +                a.getAndIncrement();
903 +                return v1;
904 +            });
905 +        if (createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
906 +
907 +        checkCompletedNormally(g, v1);
908 +        checkCancelled(f);
909 +        assertEquals(1, a.get());
910 +    }}
911 +
912 +    /**
913 +     * handle result completes exceptionally if action does
914 +     */
915 +    public void testHandle_sourceFailedActionFailed() {
916 +        for (ExecutionMode m : ExecutionMode.values())
917 +        for (boolean createIncomplete : new boolean[] { true, false })
918 +    {
919 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
920 +        final AtomicInteger a = new AtomicInteger(0);
921 +        final CFException ex1 = new CFException();
922 +        final CFException ex2 = new CFException();
923 +        if (!createIncomplete) f.completeExceptionally(ex1);
924 +        final CompletableFuture<Integer> g = m.handle
925 +            (f,
926 +             (Integer x, Throwable t) -> {
927 +                m.checkExecutionMode();
928 +                threadAssertNull(x);
929 +                threadAssertSame(ex1, t);
930 +                a.getAndIncrement();
931 +                throw ex2;
932 +            });
933 +        if (createIncomplete) f.completeExceptionally(ex1);
934 +
935 +        checkCompletedWithWrappedCFException(g, ex2);
936 +        checkCompletedWithWrappedCFException(f, ex1);
937 +        assertEquals(1, a.get());
938 +    }}
939 +
940 +    public void testHandle_sourceCompletedNormallyActionFailed() {
941 +        for (ExecutionMode m : ExecutionMode.values())
942 +        for (boolean createIncomplete : new boolean[] { true, false })
943 +        for (Integer v1 : new Integer[] { 1, null })
944 +    {
945 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
946 +        final AtomicInteger a = new AtomicInteger(0);
947 +        final CFException ex = new CFException();
948 +        if (!createIncomplete) f.complete(v1);
949 +        final CompletableFuture<Integer> g = m.handle
950 +            (f,
951 +             (Integer x, Throwable t) -> {
952 +                m.checkExecutionMode();
953 +                threadAssertSame(x, v1);
954 +                threadAssertNull(t);
955 +                a.getAndIncrement();
956 +                throw ex;
957 +            });
958 +        if (createIncomplete) f.complete(v1);
959 +
960 +        checkCompletedWithWrappedCFException(g, ex);
961 +        checkCompletedNormally(f, v1);
962 +        assertEquals(1, a.get());
963 +    }}
964 +
965 +    /**
966 +     * runAsync completes after running Runnable
967 +     */
968 +    public void testRunAsync_normalCompletion() {
969 +        ExecutionMode[] executionModes = {
970 +            ExecutionMode.ASYNC,
971 +            ExecutionMode.EXECUTOR,
972 +        };
973 +        for (ExecutionMode m : executionModes)
974 +    {
975 +        final Noop r = new Noop(m);
976 +        final CompletableFuture<Void> f = m.runAsync(r);
977 +        assertNull(f.join());
978 +        checkCompletedNormally(f, null);
979 +        assertEquals(1, r.invocationCount);
980 +    }}
981 +
982 +    /**
983 +     * failing runAsync completes exceptionally after running Runnable
984 +     */
985 +    public void testRunAsync_exceptionalCompletion() {
986 +        ExecutionMode[] executionModes = {
987 +            ExecutionMode.ASYNC,
988 +            ExecutionMode.EXECUTOR,
989 +        };
990 +        for (ExecutionMode m : executionModes)
991 +    {
992 +        final FailingRunnable r = new FailingRunnable(m);
993 +        final CompletableFuture<Void> f = m.runAsync(r);
994 +        checkCompletedWithWrappedCFException(f);
995 +        assertEquals(1, r.invocationCount);
996 +    }}
997 +
998 +    /**
999 +     * supplyAsync completes with result of supplier
1000 +     */
1001 +    public void testSupplyAsync() {
1002 +        CompletableFuture<Integer> f;
1003 +        f = CompletableFuture.supplyAsync(supplyOne);
1004 +        assertEquals(f.join(), one);
1005 +        checkCompletedNormally(f, one);
1006 +    }
1007 +
1008 +    /**
1009 +     * supplyAsync with executor completes with result of supplier
1010 +     */
1011 +    public void testSupplyAsync2() {
1012 +        CompletableFuture<Integer> f;
1013 +        f = CompletableFuture.supplyAsync(supplyOne, new ThreadExecutor());
1014 +        assertEquals(f.join(), one);
1015 +        checkCompletedNormally(f, one);
1016 +    }
1017 +
1018 +    /**
1019 +     * Failing supplyAsync completes exceptionally
1020 +     */
1021 +    public void testSupplyAsync3() {
1022 +        FailingSupplier r = new FailingSupplier(ExecutionMode.ASYNC);
1023 +        CompletableFuture<Integer> f = CompletableFuture.supplyAsync(r);
1024 +        checkCompletedWithWrappedCFException(f);
1025 +        assertEquals(1, r.invocationCount);
1026 +    }
1027 +
1028 +    // seq completion methods
1029 +
1030 +    /**
1031 +     * thenRun result completes normally after normal completion of source
1032 +     */
1033 +    public void testThenRun_normalCompletion() {
1034 +        for (ExecutionMode m : ExecutionMode.values())
1035 +        for (boolean createIncomplete : new boolean[] { true, false })
1036 +        for (Integer v1 : new Integer[] { 1, null })
1037 +    {
1038 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1039 +        final Noop r = new Noop(m);
1040 +        if (!createIncomplete) f.complete(v1);
1041 +        final CompletableFuture<Void> g = m.thenRun(f, r);
1042 +        if (createIncomplete) {
1043 +            checkIncomplete(g);
1044 +            f.complete(v1);
1045 +        }
1046 +
1047 +        checkCompletedNormally(g, null);
1048 +        checkCompletedNormally(f, v1);
1049 +        assertEquals(1, r.invocationCount);
1050 +    }}
1051 +
1052 +    /**
1053 +     * thenRun result completes exceptionally after exceptional
1054 +     * completion of source
1055 +     */
1056 +    public void testThenRun_exceptionalCompletion() {
1057 +        for (ExecutionMode m : ExecutionMode.values())
1058 +        for (boolean createIncomplete : new boolean[] { true, false })
1059 +    {
1060 +        final CFException ex = new CFException();
1061 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1062 +        final Noop r = new Noop(m);
1063 +        if (!createIncomplete) f.completeExceptionally(ex);
1064 +        final CompletableFuture<Void> g = m.thenRun(f, r);
1065 +        if (createIncomplete) {
1066 +            checkIncomplete(g);
1067 +            f.completeExceptionally(ex);
1068 +        }
1069 +
1070 +        checkCompletedWithWrappedCFException(g, ex);
1071 +        checkCompletedWithWrappedCFException(f, ex);
1072 +        assertEquals(0, r.invocationCount);
1073 +    }}
1074 +
1075 +    /**
1076 +     * thenRun result completes exceptionally if source cancelled
1077 +     */
1078 +    public void testThenRun_sourceCancelled() {
1079 +        for (ExecutionMode m : ExecutionMode.values())
1080 +        for (boolean createIncomplete : new boolean[] { true, false })
1081 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1082 +    {
1083 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1084 +        final Noop r = new Noop(m);
1085 +        if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
1086 +        final CompletableFuture<Void> g = m.thenRun(f, r);
1087 +        if (createIncomplete) {
1088 +            checkIncomplete(g);
1089 +            assertTrue(f.cancel(mayInterruptIfRunning));
1090 +        }
1091 +
1092 +        checkCompletedWithWrappedCancellationException(g);
1093 +        checkCancelled(f);
1094 +        assertEquals(0, r.invocationCount);
1095 +    }}
1096 +
1097 +    /**
1098 +     * thenRun result completes exceptionally if action does
1099 +     */
1100 +    public void testThenRun_actionFailed() {
1101 +        for (ExecutionMode m : ExecutionMode.values())
1102 +        for (boolean createIncomplete : new boolean[] { true, false })
1103 +        for (Integer v1 : new Integer[] { 1, null })
1104 +    {
1105 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1106 +        final FailingRunnable r = new FailingRunnable(m);
1107 +        if (!createIncomplete) f.complete(v1);
1108 +        final CompletableFuture<Void> g = m.thenRun(f, r);
1109 +        if (createIncomplete) {
1110 +            checkIncomplete(g);
1111 +            f.complete(v1);
1112 +        }
1113 +
1114 +        checkCompletedWithWrappedCFException(g);
1115 +        checkCompletedNormally(f, v1);
1116 +    }}
1117 +
1118 +    /**
1119 +     * thenApply result completes normally after normal completion of source
1120 +     */
1121 +    public void testThenApply_normalCompletion() {
1122 +        for (ExecutionMode m : ExecutionMode.values())
1123 +        for (boolean createIncomplete : new boolean[] { true, false })
1124 +        for (Integer v1 : new Integer[] { 1, null })
1125 +    {
1126 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1127 +        final IncFunction r = new IncFunction(m);
1128 +        if (!createIncomplete) f.complete(v1);
1129 +        final CompletableFuture<Integer> g = m.thenApply(f, r);
1130 +        if (createIncomplete) {
1131 +            checkIncomplete(g);
1132 +            f.complete(v1);
1133 +        }
1134 +
1135 +        checkCompletedNormally(g, inc(v1));
1136 +        checkCompletedNormally(f, v1);
1137 +        assertEquals(1, r.invocationCount);
1138 +    }}
1139 +
1140 +    /**
1141 +     * thenApply result completes exceptionally after exceptional
1142 +     * completion of source
1143 +     */
1144 +    public void testThenApply_exceptionalCompletion() {
1145 +        for (ExecutionMode m : ExecutionMode.values())
1146 +        for (boolean createIncomplete : new boolean[] { true, false })
1147 +    {
1148 +        final CFException ex = new CFException();
1149 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1150 +        final IncFunction r = new IncFunction(m);
1151 +        if (!createIncomplete) f.completeExceptionally(ex);
1152 +        final CompletableFuture<Integer> g = m.thenApply(f, r);
1153 +        if (createIncomplete) {
1154 +            checkIncomplete(g);
1155 +            f.completeExceptionally(ex);
1156 +        }
1157 +
1158 +        checkCompletedWithWrappedCFException(g, ex);
1159 +        checkCompletedWithWrappedCFException(f, ex);
1160 +        assertEquals(0, r.invocationCount);
1161 +    }}
1162 +
1163 +    /**
1164 +     * thenApply result completes exceptionally if source cancelled
1165 +     */
1166 +    public void testThenApply_sourceCancelled() {
1167 +        for (ExecutionMode m : ExecutionMode.values())
1168 +        for (boolean createIncomplete : new boolean[] { true, false })
1169 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1170 +    {
1171 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1172 +        final IncFunction r = new IncFunction(m);
1173 +        if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
1174 +        final CompletableFuture<Integer> g = m.thenApply(f, r);
1175 +        if (createIncomplete) {
1176 +            checkIncomplete(g);
1177 +            assertTrue(f.cancel(mayInterruptIfRunning));
1178 +        }
1179 +
1180 +        checkCompletedWithWrappedCancellationException(g);
1181 +        checkCancelled(f);
1182 +        assertEquals(0, r.invocationCount);
1183 +    }}
1184 +
1185 +    /**
1186 +     * thenApply result completes exceptionally if action does
1187 +     */
1188 +    public void testThenApply_actionFailed() {
1189 +        for (ExecutionMode m : ExecutionMode.values())
1190 +        for (boolean createIncomplete : new boolean[] { true, false })
1191 +        for (Integer v1 : new Integer[] { 1, null })
1192 +    {
1193 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1194 +        final FailingFunction r = new FailingFunction(m);
1195 +        if (!createIncomplete) f.complete(v1);
1196 +        final CompletableFuture<Integer> g = m.thenApply(f, r);
1197 +        if (createIncomplete) {
1198 +            checkIncomplete(g);
1199 +            f.complete(v1);
1200 +        }
1201 +
1202 +        checkCompletedWithWrappedCFException(g);
1203 +        checkCompletedNormally(f, v1);
1204 +    }}
1205 +
1206 +    /**
1207 +     * thenAccept result completes normally after normal completion of source
1208 +     */
1209 +    public void testThenAccept_normalCompletion() {
1210 +        for (ExecutionMode m : ExecutionMode.values())
1211 +        for (boolean createIncomplete : new boolean[] { true, false })
1212 +        for (Integer v1 : new Integer[] { 1, null })
1213 +    {
1214 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1215 +        final IncAction r = new IncAction();
1216 +        if (!createIncomplete) f.complete(v1);
1217 +        final CompletableFuture<Void> g = m.thenAccept(f, r);
1218 +        if (createIncomplete) {
1219 +            checkIncomplete(g);
1220 +            f.complete(v1);
1221 +        }
1222 +
1223 +        checkCompletedNormally(g, null);
1224 +        checkCompletedNormally(f, v1);
1225 +        assertEquals(1, r.invocationCount);
1226 +        assertEquals(inc(v1), r.value);
1227 +    }}
1228 +
1229 +    /**
1230 +     * thenAccept result completes exceptionally after exceptional
1231 +     * completion of source
1232 +     */
1233 +    public void testThenAccept_exceptionalCompletion() {
1234 +        for (ExecutionMode m : ExecutionMode.values())
1235 +        for (boolean createIncomplete : new boolean[] { true, false })
1236 +    {
1237 +        final CFException ex = new CFException();
1238 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1239 +        final IncAction r = new IncAction();
1240 +        if (!createIncomplete) f.completeExceptionally(ex);
1241 +        final CompletableFuture<Void> g = m.thenAccept(f, r);
1242 +        if (createIncomplete) {
1243 +            checkIncomplete(g);
1244 +            f.completeExceptionally(ex);
1245 +        }
1246 +
1247 +        checkCompletedWithWrappedCFException(g, ex);
1248 +        checkCompletedWithWrappedCFException(f, ex);
1249 +        assertEquals(0, r.invocationCount);
1250 +    }}
1251 +
1252 +    /**
1253 +     * thenAccept result completes exceptionally if action does
1254 +     */
1255 +    public void testThenAccept_actionFailed() {
1256 +        for (ExecutionMode m : ExecutionMode.values())
1257 +        for (boolean createIncomplete : new boolean[] { true, false })
1258 +        for (Integer v1 : new Integer[] { 1, null })
1259 +    {
1260 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1261 +        final FailingConsumer r = new FailingConsumer(m);
1262 +        if (!createIncomplete) f.complete(v1);
1263 +        final CompletableFuture<Void> g = m.thenAccept(f, r);
1264 +        if (createIncomplete) {
1265 +            checkIncomplete(g);
1266 +            f.complete(v1);
1267 +        }
1268 +
1269 +        checkCompletedWithWrappedCFException(g);
1270 +        checkCompletedNormally(f, v1);
1271 +    }}
1272 +
1273 +    /**
1274 +     * thenAccept result completes exceptionally if source cancelled
1275 +     */
1276 +    public void testThenAccept_sourceCancelled() {
1277 +        for (ExecutionMode m : ExecutionMode.values())
1278 +        for (boolean createIncomplete : new boolean[] { true, false })
1279 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1280 +    {
1281 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1282 +        final IncAction r = new IncAction();
1283 +        if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
1284 +        final CompletableFuture<Void> g = m.thenAccept(f, r);
1285 +        if (createIncomplete) {
1286 +            checkIncomplete(g);
1287 +            assertTrue(f.cancel(mayInterruptIfRunning));
1288 +        }
1289 +
1290 +        checkCompletedWithWrappedCancellationException(g);
1291 +        checkCancelled(f);
1292 +        assertEquals(0, r.invocationCount);
1293 +    }}
1294 +
1295 +    /**
1296 +     * thenCombine result completes normally after normal completion
1297 +     * of sources
1298 +     */
1299 +    public void testThenCombine_normalCompletion() {
1300 +        for (ExecutionMode m : ExecutionMode.values())
1301 +        for (boolean createIncomplete : new boolean[] { true, false })
1302 +        for (boolean fFirst : new boolean[] { true, false })
1303 +        for (Integer v1 : new Integer[] { 1, null })
1304 +        for (Integer v2 : new Integer[] { 2, null })
1305 +    {
1306 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1307 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1308 +        final SubtractFunction r = new SubtractFunction(m);
1309 +
1310 +        if (fFirst) f.complete(v1); else g.complete(v2);
1311 +        if (!createIncomplete)
1312 +            if (!fFirst) f.complete(v1); else g.complete(v2);
1313 +        final CompletableFuture<Integer> h = m.thenCombine(f, g, r);
1314 +        if (createIncomplete) {
1315 +            checkIncomplete(h);
1316 +            assertEquals(0, r.invocationCount);
1317 +            if (!fFirst) f.complete(v1); else g.complete(v2);
1318 +        }
1319 +
1320 +        checkCompletedNormally(h, subtract(v1, v2));
1321 +        checkCompletedNormally(f, v1);
1322 +        checkCompletedNormally(g, v2);
1323 +        assertEquals(1, r.invocationCount);
1324 +    }}
1325 +
1326 +    /**
1327 +     * thenCombine result completes exceptionally after exceptional
1328 +     * completion of either source
1329 +     */
1330 +    public void testThenCombine_exceptionalCompletion() {
1331 +        for (ExecutionMode m : ExecutionMode.values())
1332 +        for (boolean createIncomplete : new boolean[] { true, false })
1333 +        for (boolean fFirst : new boolean[] { true, false })
1334 +        for (Integer v1 : new Integer[] { 1, null })
1335 +    {
1336 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1337 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1338 +        final CFException ex = new CFException();
1339 +        final SubtractFunction r = new SubtractFunction(m);
1340 +
1341 +        (fFirst ? f : g).complete(v1);
1342 +        if (!createIncomplete)
1343 +            (!fFirst ? f : g).completeExceptionally(ex);
1344 +        final CompletableFuture<Integer> h = m.thenCombine(f, g, r);
1345 +        if (createIncomplete) {
1346 +            checkIncomplete(h);
1347 +            (!fFirst ? f : g).completeExceptionally(ex);
1348 +        }
1349 +
1350 +        checkCompletedWithWrappedCFException(h, ex);
1351 +        assertEquals(0, r.invocationCount);
1352 +        checkCompletedNormally(fFirst ? f : g, v1);
1353 +        checkCompletedWithWrappedCFException(!fFirst ? f : g, ex);
1354 +    }}
1355 +
1356 +    /**
1357 +     * thenCombine result completes exceptionally if action does
1358 +     */
1359 +    public void testThenCombine_actionFailed() {
1360 +        for (ExecutionMode m : ExecutionMode.values())
1361 +        for (boolean fFirst : new boolean[] { true, false })
1362 +        for (Integer v1 : new Integer[] { 1, null })
1363 +        for (Integer v2 : new Integer[] { 2, null })
1364 +    {
1365 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1366 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1367 +        final FailingBiFunction r = new FailingBiFunction(m);
1368 +        final CompletableFuture<Integer> h = m.thenCombine(f, g, r);
1369 +
1370 +        if (fFirst) {
1371 +            f.complete(v1);
1372 +            g.complete(v2);
1373 +        } else {
1374 +            g.complete(v2);
1375 +            f.complete(v1);
1376 +        }
1377 +
1378 +        checkCompletedWithWrappedCFException(h);
1379 +        checkCompletedNormally(f, v1);
1380 +        checkCompletedNormally(g, v2);
1381 +    }}
1382 +
1383 +    /**
1384 +     * thenCombine result completes exceptionally if either source cancelled
1385 +     */
1386 +    public void testThenCombine_sourceCancelled() {
1387 +        for (ExecutionMode m : ExecutionMode.values())
1388 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1389 +        for (boolean createIncomplete : new boolean[] { true, false })
1390 +        for (boolean fFirst : new boolean[] { true, false })
1391 +        for (Integer v1 : new Integer[] { 1, null })
1392 +    {
1393 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1394 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1395 +        final SubtractFunction r = new SubtractFunction(m);
1396 +
1397 +        (fFirst ? f : g).complete(v1);
1398 +        if (!createIncomplete)
1399 +            assertTrue((!fFirst ? f : g).cancel(mayInterruptIfRunning));
1400 +        final CompletableFuture<Integer> h = m.thenCombine(f, g, r);
1401 +        if (createIncomplete) {
1402 +            checkIncomplete(h);
1403 +            assertTrue((!fFirst ? f : g).cancel(mayInterruptIfRunning));
1404 +        }
1405 +
1406 +        checkCompletedWithWrappedCancellationException(h);
1407 +        checkCancelled(!fFirst ? f : g);
1408 +        assertEquals(0, r.invocationCount);
1409 +        checkCompletedNormally(fFirst ? f : g, v1);
1410 +    }}
1411 +
1412 +    /**
1413 +     * thenAcceptBoth result completes normally after normal
1414 +     * completion of sources
1415 +     */
1416 +    public void testThenAcceptBoth_normalCompletion() {
1417 +        for (ExecutionMode m : ExecutionMode.values())
1418 +        for (boolean createIncomplete : new boolean[] { true, false })
1419 +        for (boolean fFirst : new boolean[] { true, false })
1420 +        for (Integer v1 : new Integer[] { 1, null })
1421 +        for (Integer v2 : new Integer[] { 2, null })
1422 +    {
1423 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1424 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1425 +        final SubtractAction r = new SubtractAction(m);
1426 +
1427 +        if (fFirst) f.complete(v1); else g.complete(v2);
1428 +        if (!createIncomplete)
1429 +            if (!fFirst) f.complete(v1); else g.complete(v2);
1430 +        final CompletableFuture<Void> h = m.thenAcceptBoth(f, g, r);
1431 +        if (createIncomplete) {
1432 +            checkIncomplete(h);
1433 +            assertEquals(0, r.invocationCount);
1434 +            if (!fFirst) f.complete(v1); else g.complete(v2);
1435 +        }
1436 +
1437 +        checkCompletedNormally(h, null);
1438 +        assertEquals(subtract(v1, v2), r.value);
1439 +        checkCompletedNormally(f, v1);
1440 +        checkCompletedNormally(g, v2);
1441 +    }}
1442 +
1443 +    /**
1444 +     * thenAcceptBoth result completes exceptionally after exceptional
1445 +     * completion of either source
1446 +     */
1447 +    public void testThenAcceptBoth_exceptionalCompletion() {
1448 +        for (ExecutionMode m : ExecutionMode.values())
1449 +        for (boolean createIncomplete : new boolean[] { true, false })
1450 +        for (boolean fFirst : new boolean[] { true, false })
1451 +        for (Integer v1 : new Integer[] { 1, null })
1452 +    {
1453 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1454 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1455 +        final CFException ex = new CFException();
1456 +        final SubtractAction r = new SubtractAction(m);
1457 +
1458 +        (fFirst ? f : g).complete(v1);
1459 +        if (!createIncomplete)
1460 +            (!fFirst ? f : g).completeExceptionally(ex);
1461 +        final CompletableFuture<Void> h = m.thenAcceptBoth(f, g, r);
1462 +        if (createIncomplete) {
1463 +            checkIncomplete(h);
1464 +            (!fFirst ? f : g).completeExceptionally(ex);
1465 +        }
1466 +
1467 +        checkCompletedWithWrappedCFException(h, ex);
1468 +        assertEquals(0, r.invocationCount);
1469 +        checkCompletedNormally(fFirst ? f : g, v1);
1470 +        checkCompletedWithWrappedCFException(!fFirst ? f : g, ex);
1471 +    }}
1472 +
1473 +    /**
1474 +     * thenAcceptBoth result completes exceptionally if action does
1475 +     */
1476 +    public void testThenAcceptBoth_actionFailed() {
1477 +        for (ExecutionMode m : ExecutionMode.values())
1478 +        for (boolean fFirst : new boolean[] { true, false })
1479 +        for (Integer v1 : new Integer[] { 1, null })
1480 +        for (Integer v2 : new Integer[] { 2, null })
1481 +    {
1482 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1483 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1484 +        final FailingBiConsumer r = new FailingBiConsumer(m);
1485 +        final CompletableFuture<Void> h = m.thenAcceptBoth(f, g, r);
1486 +
1487 +        if (fFirst) {
1488 +            f.complete(v1);
1489 +            g.complete(v2);
1490 +        } else {
1491 +            g.complete(v2);
1492 +            f.complete(v1);
1493 +        }
1494 +
1495 +        checkCompletedWithWrappedCFException(h);
1496 +        checkCompletedNormally(f, v1);
1497 +        checkCompletedNormally(g, v2);
1498 +    }}
1499 +
1500 +    /**
1501 +     * thenAcceptBoth result completes exceptionally if either source cancelled
1502 +     */
1503 +    public void testThenAcceptBoth_sourceCancelled() {
1504 +        for (ExecutionMode m : ExecutionMode.values())
1505 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1506 +        for (boolean createIncomplete : new boolean[] { true, false })
1507 +        for (boolean fFirst : new boolean[] { true, false })
1508 +        for (Integer v1 : new Integer[] { 1, null })
1509 +    {
1510 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1511 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1512 +        final SubtractAction r = new SubtractAction(m);
1513 +
1514 +        (fFirst ? f : g).complete(v1);
1515 +        if (!createIncomplete)
1516 +            assertTrue((!fFirst ? f : g).cancel(mayInterruptIfRunning));
1517 +        final CompletableFuture<Void> h = m.thenAcceptBoth(f, g, r);
1518 +        if (createIncomplete) {
1519 +            checkIncomplete(h);
1520 +            assertTrue((!fFirst ? f : g).cancel(mayInterruptIfRunning));
1521 +        }
1522 +
1523 +        checkCompletedWithWrappedCancellationException(h);
1524 +        checkCancelled(!fFirst ? f : g);
1525 +        assertEquals(0, r.invocationCount);
1526 +        checkCompletedNormally(fFirst ? f : g, v1);
1527 +    }}
1528 +
1529 +    /**
1530 +     * runAfterBoth result completes normally after normal
1531 +     * completion of sources
1532 +     */
1533 +    public void testRunAfterBoth_normalCompletion() {
1534 +        for (ExecutionMode m : ExecutionMode.values())
1535 +        for (boolean createIncomplete : new boolean[] { true, false })
1536 +        for (boolean fFirst : new boolean[] { true, false })
1537 +        for (Integer v1 : new Integer[] { 1, null })
1538 +        for (Integer v2 : new Integer[] { 2, null })
1539 +    {
1540 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1541 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1542 +        final Noop r = new Noop(m);
1543 +
1544 +        if (fFirst) f.complete(v1); else g.complete(v2);
1545 +        if (!createIncomplete)
1546 +            if (!fFirst) f.complete(v1); else g.complete(v2);
1547 +        final CompletableFuture<Void> h = m.runAfterBoth(f, g, r);
1548 +        if (createIncomplete) {
1549 +            checkIncomplete(h);
1550 +            assertEquals(0, r.invocationCount);
1551 +            if (!fFirst) f.complete(v1); else g.complete(v2);
1552 +        }
1553 +
1554 +        checkCompletedNormally(h, null);
1555 +        assertEquals(1, r.invocationCount);
1556 +        checkCompletedNormally(f, v1);
1557 +        checkCompletedNormally(g, v2);
1558 +    }}
1559 +
1560 +    /**
1561 +     * runAfterBoth result completes exceptionally after exceptional
1562 +     * completion of either source
1563 +     */
1564 +    public void testRunAfterBoth_exceptionalCompletion() {
1565 +        for (ExecutionMode m : ExecutionMode.values())
1566 +        for (boolean createIncomplete : new boolean[] { true, false })
1567 +        for (boolean fFirst : new boolean[] { true, false })
1568 +        for (Integer v1 : new Integer[] { 1, null })
1569 +    {
1570 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1571 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1572 +        final CFException ex = new CFException();
1573 +        final Noop r = new Noop(m);
1574 +
1575 +        (fFirst ? f : g).complete(v1);
1576 +        if (!createIncomplete)
1577 +            (!fFirst ? f : g).completeExceptionally(ex);
1578 +        final CompletableFuture<Void> h = m.runAfterBoth(f, g, r);
1579 +        if (createIncomplete) {
1580 +            checkIncomplete(h);
1581 +            (!fFirst ? f : g).completeExceptionally(ex);
1582 +        }
1583 +
1584 +        checkCompletedWithWrappedCFException(h, ex);
1585 +        assertEquals(0, r.invocationCount);
1586 +        checkCompletedNormally(fFirst ? f : g, v1);
1587 +        checkCompletedWithWrappedCFException(!fFirst ? f : g, ex);
1588 +    }}
1589 +
1590 +    /**
1591 +     * runAfterBoth result completes exceptionally if action does
1592 +     */
1593 +    public void testRunAfterBoth_actionFailed() {
1594 +        for (ExecutionMode m : ExecutionMode.values())
1595 +        for (boolean fFirst : new boolean[] { true, false })
1596 +        for (Integer v1 : new Integer[] { 1, null })
1597 +        for (Integer v2 : new Integer[] { 2, null })
1598 +    {
1599 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1600 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1601 +        final FailingRunnable r = new FailingRunnable(m);
1602 +
1603 +        CompletableFuture<Void> h1 = m.runAfterBoth(f, g, r);
1604 +        if (fFirst) {
1605 +            f.complete(v1);
1606 +            g.complete(v2);
1607 +        } else {
1608 +            g.complete(v2);
1609 +            f.complete(v1);
1610 +        }
1611 +        CompletableFuture<Void> h2 = m.runAfterBoth(f, g, r);
1612 +
1613 +        checkCompletedWithWrappedCFException(h1);
1614 +        checkCompletedWithWrappedCFException(h2);
1615 +        checkCompletedNormally(f, v1);
1616 +        checkCompletedNormally(g, v2);
1617 +    }}
1618 +
1619 +    /**
1620 +     * runAfterBoth result completes exceptionally if either source cancelled
1621 +     */
1622 +    public void testRunAfterBoth_sourceCancelled() {
1623 +        for (ExecutionMode m : ExecutionMode.values())
1624 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1625 +        for (boolean createIncomplete : new boolean[] { true, false })
1626 +        for (boolean fFirst : new boolean[] { true, false })
1627 +        for (Integer v1 : new Integer[] { 1, null })
1628 +    {
1629 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1630 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1631 +        final Noop r = new Noop(m);
1632 +
1633 +
1634 +        (fFirst ? f : g).complete(v1);
1635 +        if (!createIncomplete)
1636 +            assertTrue((!fFirst ? f : g).cancel(mayInterruptIfRunning));
1637 +        final CompletableFuture<Void> h = m.runAfterBoth(f, g, r);
1638 +        if (createIncomplete) {
1639 +            checkIncomplete(h);
1640 +            assertTrue((!fFirst ? f : g).cancel(mayInterruptIfRunning));
1641 +        }
1642 +
1643 +        checkCompletedWithWrappedCancellationException(h);
1644 +        checkCancelled(!fFirst ? f : g);
1645 +        assertEquals(0, r.invocationCount);
1646 +        checkCompletedNormally(fFirst ? f : g, v1);
1647 +    }}
1648 +
1649 +    /**
1650 +     * applyToEither result completes normally after normal completion
1651 +     * of either source
1652 +     */
1653 +    public void testApplyToEither_normalCompletion() {
1654 +        for (ExecutionMode m : ExecutionMode.values())
1655 +        for (boolean createIncomplete : new boolean[] { true, false })
1656 +        for (boolean fFirst : new boolean[] { true, false })
1657 +        for (Integer v1 : new Integer[] { 1, null })
1658 +        for (Integer v2 : new Integer[] { 2, null })
1659 +    {
1660 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1661 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1662 +        final IncFunction r = new IncFunction(m);
1663 +
1664 +        if (!createIncomplete)
1665 +            if (fFirst) f.complete(v1); else g.complete(v2);
1666 +        final CompletableFuture<Integer> h = m.applyToEither(f, g, r);
1667 +        if (createIncomplete) {
1668 +            checkIncomplete(h);
1669 +            assertEquals(0, r.invocationCount);
1670 +            if (fFirst) f.complete(v1); else g.complete(v2);
1671 +        }
1672 +        checkCompletedNormally(h, inc(fFirst ? v1 : v2));
1673 +        if (!fFirst) f.complete(v1); else g.complete(v2);
1674 +
1675 +        checkCompletedNormally(f, v1);
1676 +        checkCompletedNormally(g, v2);
1677 +        checkCompletedNormally(h, inc(fFirst ? v1 : v2));
1678 +    }}
1679 +
1680 +    public void testApplyToEither_normalCompletionBothAvailable() {
1681 +        for (ExecutionMode m : ExecutionMode.values())
1682 +        for (boolean fFirst : new boolean[] { true, false })
1683 +        for (Integer v1 : new Integer[] { 1, null })
1684 +        for (Integer v2 : new Integer[] { 2, null })
1685 +    {
1686 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1687 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1688 +        final IncFunction r = new IncFunction(m);
1689 +
1690 +        if (fFirst) {
1691 +            f.complete(v1);
1692 +            g.complete(v2);
1693 +        } else {
1694 +            g.complete(v2);
1695 +            f.complete(v1);
1696 +        }
1697 +
1698 +        final CompletableFuture<Integer> h = m.applyToEither(f, g, r);
1699 +
1700 +        checkCompletedNormally(f, v1);
1701 +        checkCompletedNormally(g, v2);
1702 +
1703 +        // unspecified behavior
1704 +        assertTrue(Objects.equals(h.join(), inc(v1)) ||
1705 +                   Objects.equals(h.join(), inc(v2)));
1706 +        assertEquals(1, r.invocationCount);
1707 +    }}
1708 +
1709 +    /**
1710 +     * applyToEither result completes exceptionally after exceptional
1711 +     * completion of either source
1712 +     */
1713 +    public void testApplyToEither_exceptionalCompletion1() {
1714 +        for (ExecutionMode m : ExecutionMode.values())
1715 +        for (boolean createIncomplete : new boolean[] { true, false })
1716 +        for (boolean fFirst : new boolean[] { true, false })
1717 +        for (Integer v1 : new Integer[] { 1, null })
1718 +    {
1719 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1720 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1721 +        final CFException ex = new CFException();
1722 +        final IncFunction r = new IncFunction(m);
1723 +
1724 +        if (!createIncomplete) (fFirst ? f : g).completeExceptionally(ex);
1725 +        final CompletableFuture<Integer> h = m.applyToEither(f, g, r);
1726 +        if (createIncomplete) {
1727 +            checkIncomplete(h);
1728 +            assertEquals(0, r.invocationCount);
1729 +            (fFirst ? f : g).completeExceptionally(ex);
1730 +        }
1731 +
1732 +        checkCompletedWithWrappedCFException(h, ex);
1733 +        (!fFirst ? f : g).complete(v1);
1734 +
1735 +        assertEquals(0, r.invocationCount);
1736 +        checkCompletedNormally(!fFirst ? f : g, v1);
1737 +        checkCompletedWithWrappedCFException(fFirst ? f : g, ex);
1738 +        checkCompletedWithWrappedCFException(h, ex);
1739 +    }}
1740 +
1741 +    public void testApplyToEither_exceptionalCompletion2() {
1742 +        for (ExecutionMode m : ExecutionMode.values())
1743 +        for (boolean reverseArgs : new boolean[] { true, false })
1744 +        for (boolean fFirst : new boolean[] { true, false })
1745 +        for (Integer v1 : new Integer[] { 1, null })
1746 +    {
1747 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1748 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1749 +        final IncFunction r1 = new IncFunction(m);
1750 +        final IncFunction r2 = new IncFunction(m);
1751 +        final CFException ex = new CFException();
1752 +        final CompletableFuture<Integer> j = (reverseArgs ? g : f);
1753 +        final CompletableFuture<Integer> k = (reverseArgs ? f : g);
1754 +        final CompletableFuture<Integer> h1 = m.applyToEither(j, k, r1);
1755 +        if (fFirst) {
1756 +            f.complete(v1);
1757 +            g.completeExceptionally(ex);
1758 +        } else {
1759 +            g.completeExceptionally(ex);
1760 +            f.complete(v1);
1761 +        }
1762 +        final CompletableFuture<Integer> h2 = m.applyToEither(j, k, r2);
1763 +
1764 +        // unspecified behavior
1765 +        try {
1766 +            assertEquals(inc(v1), h1.join());
1767 +            assertEquals(1, r1.invocationCount);
1768 +        } catch (CompletionException ok) {
1769 +            checkCompletedWithWrappedCFException(h1, ex);
1770 +            assertEquals(0, r1.invocationCount);
1771 +        }
1772 +
1773 +        try {
1774 +            assertEquals(inc(v1), h2.join());
1775 +            assertEquals(1, r2.invocationCount);
1776 +        } catch (CompletionException ok) {
1777 +            checkCompletedWithWrappedCFException(h2, ex);
1778 +            assertEquals(0, r2.invocationCount);
1779 +        }
1780 +
1781 +        checkCompletedWithWrappedCFException(g, ex);
1782 +        checkCompletedNormally(f, v1);
1783 +    }}
1784 +
1785 +    /**
1786 +     * applyToEither result completes exceptionally if action does
1787 +     */
1788 +    public void testApplyToEither_actionFailed1() {
1789 +        for (ExecutionMode m : ExecutionMode.values())
1790 +        for (Integer v1 : new Integer[] { 1, null })
1791 +        for (Integer v2 : new Integer[] { 2, null })
1792 +    {
1793 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1794 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1795 +        final FailingFunction r = new FailingFunction(m);
1796 +        final CompletableFuture<Integer> h = m.applyToEither(f, g, r);
1797 +
1798 +        f.complete(v1);
1799 +        checkCompletedWithWrappedCFException(h);
1800 +        g.complete(v2);
1801 +        checkCompletedNormally(f, v1);
1802 +        checkCompletedNormally(g, v2);
1803 +    }}
1804 +
1805 +    public void testApplyToEither_actionFailed2() {
1806 +        for (ExecutionMode m : ExecutionMode.values())
1807 +        for (Integer v1 : new Integer[] { 1, null })
1808 +        for (Integer v2 : new Integer[] { 2, null })
1809 +    {
1810 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1811 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1812 +        final FailingFunction r = new FailingFunction(m);
1813 +        final CompletableFuture<Integer> h = m.applyToEither(f, g, r);
1814 +
1815 +        g.complete(v2);
1816 +        checkCompletedWithWrappedCFException(h);
1817 +        f.complete(v1);
1818 +        checkCompletedNormally(f, v1);
1819 +        checkCompletedNormally(g, v2);
1820 +    }}
1821 +
1822 +    /**
1823 +     * applyToEither result completes exceptionally if either source cancelled
1824 +     */
1825 +    public void testApplyToEither_sourceCancelled1() {
1826 +        for (ExecutionMode m : ExecutionMode.values())
1827 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1828 +        for (boolean createIncomplete : new boolean[] { true, false })
1829 +        for (boolean fFirst : new boolean[] { true, false })
1830 +        for (Integer v1 : new Integer[] { 1, null })
1831 +    {
1832 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1833 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1834 +        final IncFunction r = new IncFunction(m);
1835 +
1836 +        if (!createIncomplete) assertTrue((fFirst ? f : g).cancel(mayInterruptIfRunning));
1837 +        final CompletableFuture<Integer> h = m.applyToEither(f, g, r);
1838 +        if (createIncomplete) {
1839 +            checkIncomplete(h);
1840 +            assertEquals(0, r.invocationCount);
1841 +            assertTrue((fFirst ? f : g).cancel(mayInterruptIfRunning));
1842 +        }
1843 +
1844 +        checkCompletedWithWrappedCancellationException(h);
1845 +        (!fFirst ? f : g).complete(v1);
1846 +
1847 +        assertEquals(0, r.invocationCount);
1848 +        checkCompletedNormally(!fFirst ? f : g, v1);
1849 +        checkCancelled(fFirst ? f : g);
1850 +        checkCompletedWithWrappedCancellationException(h);
1851 +    }}
1852 +
1853 +    public void testApplyToEither_sourceCancelled2() {
1854 +        for (ExecutionMode m : ExecutionMode.values())
1855 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1856 +        for (boolean reverseArgs : new boolean[] { true, false })
1857 +        for (boolean fFirst : new boolean[] { true, false })
1858 +        for (Integer v1 : new Integer[] { 1, null })
1859 +    {
1860 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1861 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1862 +        final IncFunction r1 = new IncFunction(m);
1863 +        final IncFunction r2 = new IncFunction(m);
1864 +        final CFException ex = new CFException();
1865 +        final CompletableFuture<Integer> j = (reverseArgs ? g : f);
1866 +        final CompletableFuture<Integer> k = (reverseArgs ? f : g);
1867 +
1868 +        final CompletableFuture<Integer> h1 = m.applyToEither(j, k, r1);
1869 +        if (fFirst) {
1870 +            f.complete(v1);
1871 +            assertTrue(g.cancel(mayInterruptIfRunning));
1872 +        } else {
1873 +            assertTrue(g.cancel(mayInterruptIfRunning));
1874 +            f.complete(v1);
1875 +        }
1876 +        final CompletableFuture<Integer> h2 = m.applyToEither(j, k, r2);
1877 +
1878 +        // unspecified behavior
1879 +        try {
1880 +            assertEquals(inc(v1), h1.join());
1881 +            assertEquals(1, r1.invocationCount);
1882 +        } catch (CompletionException ok) {
1883 +            checkCompletedWithWrappedCancellationException(h1);
1884 +            assertEquals(0, r1.invocationCount);
1885 +        }
1886 +
1887 +        try {
1888 +            assertEquals(inc(v1), h2.join());
1889 +            assertEquals(1, r2.invocationCount);
1890 +        } catch (CompletionException ok) {
1891 +            checkCompletedWithWrappedCancellationException(h2);
1892 +            assertEquals(0, r2.invocationCount);
1893 +        }
1894 +
1895 +        checkCancelled(g);
1896 +        checkCompletedNormally(f, v1);
1897 +    }}
1898 +
1899 +    /**
1900 +     * acceptEither result completes normally after normal completion
1901 +     * of either source
1902 +     */
1903 +    public void testAcceptEither_normalCompletion1() {
1904 +        for (ExecutionMode m : ExecutionMode.values())
1905 +        for (Integer v1 : new Integer[] { 1, null })
1906 +        for (Integer v2 : new Integer[] { 2, null })
1907 +    {
1908 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1909 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1910 +        final IncAction r = new IncAction();
1911 +        final CompletableFuture<Void> h = m.acceptEither(f, g, r);
1912 +
1913 +        f.complete(v1);
1914 +        checkCompletedNormally(h, null);
1915 +        assertEquals(inc(v1), r.value);
1916 +        g.complete(v2);
1917 +
1918 +        checkCompletedNormally(f, v1);
1919 +        checkCompletedNormally(g, v2);
1920 +        checkCompletedNormally(h, null);
1921 +    }}
1922 +
1923 +    public void testAcceptEither_normalCompletion2() {
1924 +        for (ExecutionMode m : ExecutionMode.values())
1925 +        for (Integer v1 : new Integer[] { 1, null })
1926 +        for (Integer v2 : new Integer[] { 2, null })
1927 +    {
1928 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1929 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1930 +        final IncAction r = new IncAction();
1931 +        final CompletableFuture<Void> h = m.acceptEither(f, g, r);
1932 +
1933 +        g.complete(v2);
1934 +        checkCompletedNormally(h, null);
1935 +        assertEquals(inc(v2), r.value);
1936 +        f.complete(v1);
1937 +
1938 +        checkCompletedNormally(f, v1);
1939 +        checkCompletedNormally(g, v2);
1940 +        checkCompletedNormally(h, null);
1941 +    }}
1942 +
1943 +    public void testAcceptEither_normalCompletion3() {
1944 +        for (ExecutionMode m : ExecutionMode.values())
1945 +        for (Integer v1 : new Integer[] { 1, null })
1946 +        for (Integer v2 : new Integer[] { 2, null })
1947 +    {
1948 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1949 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1950 +        final IncAction r = new IncAction();
1951 +
1952 +        f.complete(v1);
1953 +        g.complete(v2);
1954 +        final CompletableFuture<Void> h = m.acceptEither(f, g, r);
1955 +
1956 +        checkCompletedNormally(h, null);
1957 +        checkCompletedNormally(f, v1);
1958 +        checkCompletedNormally(g, v2);
1959 +
1960 +        // unspecified behavior
1961 +        assertTrue(Objects.equals(r.value, inc(v1)) ||
1962 +                   Objects.equals(r.value, inc(v2)));
1963 +    }}
1964 +
1965 +    /**
1966 +     * acceptEither result completes exceptionally after exceptional
1967 +     * completion of either source
1968 +     */
1969 +    public void testAcceptEither_exceptionalCompletion1() {
1970 +        for (ExecutionMode m : ExecutionMode.values())
1971 +        for (Integer v1 : new Integer[] { 1, null })
1972 +    {
1973 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1974 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1975 +        final IncAction r = new IncAction();
1976 +        final CompletableFuture<Void> h = m.acceptEither(f, g, r);
1977 +        final CFException ex = new CFException();
1978 +
1979 +        f.completeExceptionally(ex);
1980 +        checkCompletedWithWrappedCFException(h, ex);
1981 +        g.complete(v1);
1982 +
1983 +        assertEquals(0, r.invocationCount);
1984 +        checkCompletedNormally(g, v1);
1985 +        checkCompletedWithWrappedCFException(f, ex);
1986 +        checkCompletedWithWrappedCFException(h, ex);
1987 +    }}
1988 +
1989 +    public void testAcceptEither_exceptionalCompletion2() {
1990 +        for (ExecutionMode m : ExecutionMode.values())
1991 +        for (Integer v1 : new Integer[] { 1, null })
1992 +    {
1993 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
1994 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
1995 +        final IncAction r = new IncAction();
1996 +        final CompletableFuture<Void> h = m.acceptEither(f, g, r);
1997 +        final CFException ex = new CFException();
1998 +
1999 +        g.completeExceptionally(ex);
2000 +        checkCompletedWithWrappedCFException(h, ex);
2001 +        f.complete(v1);
2002 +
2003 +        assertEquals(0, r.invocationCount);
2004 +        checkCompletedNormally(f, v1);
2005 +        checkCompletedWithWrappedCFException(g, ex);
2006 +        checkCompletedWithWrappedCFException(h, ex);
2007 +    }}
2008 +
2009 +    public void testAcceptEither_exceptionalCompletion3() {
2010 +        for (ExecutionMode m : ExecutionMode.values())
2011 +        for (Integer v1 : new Integer[] { 1, null })
2012 +    {
2013 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2014 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2015 +        final IncAction r = new IncAction();
2016 +        final CFException ex = new CFException();
2017 +
2018 +        g.completeExceptionally(ex);
2019 +        f.complete(v1);
2020 +        final CompletableFuture<Void> h = m.acceptEither(f, g, r);
2021 +
2022 +        // unspecified behavior
2023 +        Integer v;
2024 +        try {
2025 +            assertNull(h.join());
2026 +            assertEquals(1, r.invocationCount);
2027 +            assertEquals(inc(v1), r.value);
2028 +        } catch (CompletionException ok) {
2029 +            checkCompletedWithWrappedCFException(h, ex);
2030 +            assertEquals(0, r.invocationCount);
2031 +        }
2032 +
2033 +        checkCompletedWithWrappedCFException(g, ex);
2034 +        checkCompletedNormally(f, v1);
2035 +    }}
2036 +
2037 +    public void testAcceptEither_exceptionalCompletion4() {
2038 +        for (ExecutionMode m : ExecutionMode.values())
2039 +        for (Integer v1 : new Integer[] { 1, null })
2040 +    {
2041 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2042 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2043 +        final IncAction r = new IncAction();
2044 +        final CFException ex = new CFException();
2045 +
2046 +        f.completeExceptionally(ex);
2047 +        g.complete(v1);
2048 +        final CompletableFuture<Void> h = m.acceptEither(f, g, r);
2049 +
2050 +        // unspecified behavior
2051 +        Integer v;
2052 +        try {
2053 +            assertNull(h.join());
2054 +            assertEquals(1, r.invocationCount);
2055 +            assertEquals(inc(v1), r.value);
2056 +        } catch (CompletionException ok) {
2057 +            checkCompletedWithWrappedCFException(h, ex);
2058 +            assertEquals(0, r.invocationCount);
2059 +        }
2060 +
2061 +        checkCompletedWithWrappedCFException(f, ex);
2062 +        checkCompletedNormally(g, v1);
2063 +    }}
2064 +
2065 +    /**
2066 +     * acceptEither result completes exceptionally if action does
2067 +     */
2068 +    public void testAcceptEither_actionFailed1() {
2069 +        for (ExecutionMode m : ExecutionMode.values())
2070 +        for (Integer v1 : new Integer[] { 1, null })
2071 +        for (Integer v2 : new Integer[] { 2, null })
2072 +    {
2073 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2074 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2075 +        final FailingConsumer r = new FailingConsumer(m);
2076 +        final CompletableFuture<Void> h = m.acceptEither(f, g, r);
2077 +
2078 +        f.complete(v1);
2079 +        checkCompletedWithWrappedCFException(h);
2080 +        g.complete(v2);
2081 +        checkCompletedNormally(f, v1);
2082 +        checkCompletedNormally(g, v2);
2083 +    }}
2084 +
2085 +    public void testAcceptEither_actionFailed2() {
2086 +        for (ExecutionMode m : ExecutionMode.values())
2087 +        for (Integer v1 : new Integer[] { 1, null })
2088 +        for (Integer v2 : new Integer[] { 2, null })
2089 +    {
2090 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2091 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2092 +        final FailingConsumer r = new FailingConsumer(m);
2093 +        final CompletableFuture<Void> h = m.acceptEither(f, g, r);
2094 +
2095 +        g.complete(v2);
2096 +        checkCompletedWithWrappedCFException(h);
2097 +        f.complete(v1);
2098 +        checkCompletedNormally(f, v1);
2099 +        checkCompletedNormally(g, v2);
2100 +    }}
2101 +
2102 +    /**
2103 +     * acceptEither result completes exceptionally if either source cancelled
2104 +     */
2105 +    public void testAcceptEither_sourceCancelled1() {
2106 +        for (ExecutionMode m : ExecutionMode.values())
2107 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2108 +        for (Integer v1 : new Integer[] { 1, null })
2109 +    {
2110 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2111 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2112 +        final IncAction r = new IncAction();
2113 +        final CompletableFuture<Void> h = m.acceptEither(f, g, r);
2114 +
2115 +        assertTrue(f.cancel(mayInterruptIfRunning));
2116 +        checkCompletedWithWrappedCancellationException(h);
2117 +        g.complete(v1);
2118 +
2119 +        checkCancelled(f);
2120 +        assertEquals(0, r.invocationCount);
2121 +        checkCompletedNormally(g, v1);
2122 +        checkCompletedWithWrappedCancellationException(h);
2123 +    }}
2124 +
2125 +    public void testAcceptEither_sourceCancelled2() {
2126 +        for (ExecutionMode m : ExecutionMode.values())
2127 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2128 +        for (Integer v1 : new Integer[] { 1, null })
2129 +    {
2130 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2131 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2132 +        final IncAction r = new IncAction();
2133 +        final CompletableFuture<Void> h = m.acceptEither(f, g, r);
2134 +
2135 +        assertTrue(g.cancel(mayInterruptIfRunning));
2136 +        checkCompletedWithWrappedCancellationException(h);
2137 +        f.complete(v1);
2138 +
2139 +        checkCancelled(g);
2140 +        assertEquals(0, r.invocationCount);
2141 +        checkCompletedNormally(f, v1);
2142 +        checkCompletedWithWrappedCancellationException(h);
2143 +    }}
2144 +
2145 +    public void testAcceptEither_sourceCancelled3() {
2146 +        for (ExecutionMode m : ExecutionMode.values())
2147 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2148 +        for (Integer v1 : new Integer[] { 1, null })
2149 +    {
2150 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2151 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2152 +        final IncAction r = new IncAction();
2153 +
2154 +        assertTrue(g.cancel(mayInterruptIfRunning));
2155 +        f.complete(v1);
2156 +        final CompletableFuture<Void> h = m.acceptEither(f, g, r);
2157 +
2158 +        // unspecified behavior
2159 +        Integer v;
2160 +        try {
2161 +            assertNull(h.join());
2162 +            assertEquals(1, r.invocationCount);
2163 +            assertEquals(inc(v1), r.value);
2164 +        } catch (CompletionException ok) {
2165 +            checkCompletedWithWrappedCancellationException(h);
2166 +            assertEquals(0, r.invocationCount);
2167 +        }
2168 +
2169 +        checkCancelled(g);
2170 +        checkCompletedNormally(f, v1);
2171 +    }}
2172 +
2173 +    public void testAcceptEither_sourceCancelled4() {
2174 +        for (ExecutionMode m : ExecutionMode.values())
2175 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2176 +        for (Integer v1 : new Integer[] { 1, null })
2177 +    {
2178 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2179 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2180 +        final IncAction r = new IncAction();
2181 +
2182 +        assertTrue(f.cancel(mayInterruptIfRunning));
2183 +        g.complete(v1);
2184 +        final CompletableFuture<Void> h = m.acceptEither(f, g, r);
2185 +
2186 +        // unspecified behavior
2187 +        Integer v;
2188 +        try {
2189 +            assertNull(h.join());
2190 +            assertEquals(1, r.invocationCount);
2191 +            assertEquals(inc(v1), r.value);
2192 +        } catch (CompletionException ok) {
2193 +            checkCompletedWithWrappedCancellationException(h);
2194 +            assertEquals(0, r.invocationCount);
2195 +        }
2196 +
2197 +        checkCancelled(f);
2198 +        checkCompletedNormally(g, v1);
2199 +    }}
2200 +
2201 +    /**
2202 +     * runAfterEither result completes normally after normal completion
2203 +     * of either source
2204 +     */
2205 +    public void testRunAfterEither_normalCompletion1() {
2206 +        for (ExecutionMode m : ExecutionMode.values())
2207 +        for (Integer v1 : new Integer[] { 1, null })
2208 +        for (Integer v2 : new Integer[] { 2, null })
2209 +    {
2210 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2211 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2212 +        final Noop r = new Noop(m);
2213 +        final CompletableFuture<Void> h = m.runAfterEither(f, g, r);
2214 +
2215 +        f.complete(v1);
2216 +        checkCompletedNormally(h, null);
2217 +        assertEquals(1, r.invocationCount);
2218 +        g.complete(v2);
2219 +
2220 +        checkCompletedNormally(f, v1);
2221 +        checkCompletedNormally(g, v2);
2222 +        checkCompletedNormally(h, null);
2223 +        assertEquals(1, r.invocationCount);
2224 +    }}
2225 +
2226 +    public void testRunAfterEither_normalCompletion2() {
2227 +        for (ExecutionMode m : ExecutionMode.values())
2228 +        for (Integer v1 : new Integer[] { 1, null })
2229 +        for (Integer v2 : new Integer[] { 2, null })
2230 +    {
2231 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2232 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2233 +        final Noop r = new Noop(m);
2234 +        final CompletableFuture<Void> h = m.runAfterEither(f, g, r);
2235 +
2236 +        g.complete(v2);
2237 +        checkCompletedNormally(h, null);
2238 +        assertEquals(1, r.invocationCount);
2239 +        f.complete(v1);
2240 +
2241 +        checkCompletedNormally(f, v1);
2242 +        checkCompletedNormally(g, v2);
2243 +        checkCompletedNormally(h, null);
2244 +        assertEquals(1, r.invocationCount);
2245 +        }}
2246 +
2247 +    public void testRunAfterEither_normalCompletion3() {
2248 +        for (ExecutionMode m : ExecutionMode.values())
2249 +        for (Integer v1 : new Integer[] { 1, null })
2250 +        for (Integer v2 : new Integer[] { 2, null })
2251 +    {
2252 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2253 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2254 +        final Noop r = new Noop(m);
2255 +
2256 +        f.complete(v1);
2257 +        g.complete(v2);
2258 +        final CompletableFuture<Void> h = m.runAfterEither(f, g, r);
2259 +
2260 +        checkCompletedNormally(h, null);
2261 +        checkCompletedNormally(f, v1);
2262 +        checkCompletedNormally(g, v2);
2263 +        assertEquals(1, r.invocationCount);
2264 +    }}
2265 +
2266 +    /**
2267 +     * runAfterEither result completes exceptionally after exceptional
2268 +     * completion of either source
2269 +     */
2270 +    public void testRunAfterEither_exceptionalCompletion1() {
2271 +        for (ExecutionMode m : ExecutionMode.values())
2272 +        for (Integer v1 : new Integer[] { 1, null })
2273 +    {
2274 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2275 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2276 +        final Noop r = new Noop(m);
2277 +        final CompletableFuture<Void> h = m.runAfterEither(f, g, r);
2278 +        final CFException ex = new CFException();
2279 +
2280 +        f.completeExceptionally(ex);
2281 +        checkCompletedWithWrappedCFException(h, ex);
2282 +        g.complete(v1);
2283 +
2284 +        assertEquals(0, r.invocationCount);
2285 +        checkCompletedNormally(g, v1);
2286 +        checkCompletedWithWrappedCFException(f, ex);
2287 +        checkCompletedWithWrappedCFException(h, ex);
2288 +    }}
2289 +
2290 +    public void testRunAfterEither_exceptionalCompletion2() {
2291 +        for (ExecutionMode m : ExecutionMode.values())
2292 +        for (Integer v1 : new Integer[] { 1, null })
2293 +    {
2294 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2295 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2296 +        final Noop r = new Noop(m);
2297 +        final CompletableFuture<Void> h = m.runAfterEither(f, g, r);
2298 +        final CFException ex = new CFException();
2299 +
2300 +        g.completeExceptionally(ex);
2301 +        checkCompletedWithWrappedCFException(h, ex);
2302 +        f.complete(v1);
2303 +
2304 +        assertEquals(0, r.invocationCount);
2305 +        checkCompletedNormally(f, v1);
2306 +        checkCompletedWithWrappedCFException(g, ex);
2307 +        checkCompletedWithWrappedCFException(h, ex);
2308 +    }}
2309 +
2310 +    public void testRunAfterEither_exceptionalCompletion3() {
2311 +        for (ExecutionMode m : ExecutionMode.values())
2312 +        for (Integer v1 : new Integer[] { 1, null })
2313 +    {
2314 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2315 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2316 +        final Noop r = new Noop(m);
2317 +        final CFException ex = new CFException();
2318 +
2319 +        g.completeExceptionally(ex);
2320 +        f.complete(v1);
2321 +        final CompletableFuture<Void> h = m.runAfterEither(f, g, r);
2322 +
2323 +        // unspecified behavior
2324 +        Integer v;
2325 +        try {
2326 +            assertNull(h.join());
2327 +            assertEquals(1, r.invocationCount);
2328 +        } catch (CompletionException ok) {
2329 +            checkCompletedWithWrappedCFException(h, ex);
2330 +            assertEquals(0, r.invocationCount);
2331 +        }
2332 +
2333 +        checkCompletedWithWrappedCFException(g, ex);
2334 +        checkCompletedNormally(f, v1);
2335 +    }}
2336 +
2337 +    public void testRunAfterEither_exceptionalCompletion4() {
2338 +        for (ExecutionMode m : ExecutionMode.values())
2339 +        for (Integer v1 : new Integer[] { 1, null })
2340 +    {
2341 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2342 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2343 +        final Noop r = new Noop(m);
2344 +        final CFException ex = new CFException();
2345 +
2346 +        f.completeExceptionally(ex);
2347 +        g.complete(v1);
2348 +        final CompletableFuture<Void> h = m.runAfterEither(f, g, r);
2349 +
2350 +        // unspecified behavior
2351 +        Integer v;
2352 +        try {
2353 +            assertNull(h.join());
2354 +            assertEquals(1, r.invocationCount);
2355 +        } catch (CompletionException ok) {
2356 +            checkCompletedWithWrappedCFException(h, ex);
2357 +            assertEquals(0, r.invocationCount);
2358 +        }
2359 +
2360 +        checkCompletedWithWrappedCFException(f, ex);
2361 +        checkCompletedNormally(g, v1);
2362 +    }}
2363 +
2364 +    /**
2365 +     * runAfterEither result completes exceptionally if action does
2366 +     */
2367 +    public void testRunAfterEither_actionFailed1() {
2368 +        for (ExecutionMode m : ExecutionMode.values())
2369 +        for (Integer v1 : new Integer[] { 1, null })
2370 +        for (Integer v2 : new Integer[] { 2, null })
2371 +    {
2372 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2373 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2374 +        final FailingRunnable r = new FailingRunnable(m);
2375 +        final CompletableFuture<Void> h = m.runAfterEither(f, g, r);
2376 +
2377 +        f.complete(v1);
2378 +        checkCompletedWithWrappedCFException(h);
2379 +        g.complete(v2);
2380 +        checkCompletedNormally(f, v1);
2381 +        checkCompletedNormally(g, v2);
2382 +    }}
2383 +
2384 +    public void testRunAfterEither_actionFailed2() {
2385 +        for (ExecutionMode m : ExecutionMode.values())
2386 +        for (Integer v1 : new Integer[] { 1, null })
2387 +        for (Integer v2 : new Integer[] { 2, null })
2388 +    {
2389 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2390 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2391 +        final FailingRunnable r = new FailingRunnable(m);
2392 +        final CompletableFuture<Void> h = m.runAfterEither(f, g, r);
2393 +
2394 +        g.complete(v2);
2395 +        checkCompletedWithWrappedCFException(h);
2396 +        f.complete(v1);
2397 +        checkCompletedNormally(f, v1);
2398 +        checkCompletedNormally(g, v2);
2399 +    }}
2400 +
2401 +    /**
2402 +     * runAfterEither result completes exceptionally if either source cancelled
2403 +     */
2404 +    public void testRunAfterEither_sourceCancelled1() {
2405 +        for (ExecutionMode m : ExecutionMode.values())
2406 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2407 +        for (Integer v1 : new Integer[] { 1, null })
2408 +    {
2409 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2410 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2411 +        final Noop r = new Noop(m);
2412 +        final CompletableFuture<Void> h = m.runAfterEither(f, g, r);
2413 +
2414 +        assertTrue(f.cancel(mayInterruptIfRunning));
2415 +        checkCompletedWithWrappedCancellationException(h);
2416 +        g.complete(v1);
2417 +
2418 +        checkCancelled(f);
2419 +        assertEquals(0, r.invocationCount);
2420 +        checkCompletedNormally(g, v1);
2421 +        checkCompletedWithWrappedCancellationException(h);
2422 +    }}
2423 +
2424 +    public void testRunAfterEither_sourceCancelled2() {
2425 +        for (ExecutionMode m : ExecutionMode.values())
2426 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2427 +        for (Integer v1 : new Integer[] { 1, null })
2428 +    {
2429 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2430 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2431 +        final Noop r = new Noop(m);
2432 +        final CompletableFuture<Void> h = m.runAfterEither(f, g, r);
2433 +
2434 +        assertTrue(g.cancel(mayInterruptIfRunning));
2435 +        checkCompletedWithWrappedCancellationException(h);
2436 +        f.complete(v1);
2437 +
2438 +        checkCancelled(g);
2439 +        assertEquals(0, r.invocationCount);
2440 +        checkCompletedNormally(f, v1);
2441 +        checkCompletedWithWrappedCancellationException(h);
2442 +    }}
2443 +
2444 +    public void testRunAfterEither_sourceCancelled3() {
2445 +        for (ExecutionMode m : ExecutionMode.values())
2446 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2447 +        for (Integer v1 : new Integer[] { 1, null })
2448 +    {
2449 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2450 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2451 +        final Noop r = new Noop(m);
2452 +
2453 +        assertTrue(g.cancel(mayInterruptIfRunning));
2454 +        f.complete(v1);
2455 +        final CompletableFuture<Void> h = m.runAfterEither(f, g, r);
2456 +
2457 +        // unspecified behavior
2458 +        Integer v;
2459 +        try {
2460 +            assertNull(h.join());
2461 +            assertEquals(1, r.invocationCount);
2462 +        } catch (CompletionException ok) {
2463 +            checkCompletedWithWrappedCancellationException(h);
2464 +            assertEquals(0, r.invocationCount);
2465 +        }
2466 +
2467 +        checkCancelled(g);
2468 +        checkCompletedNormally(f, v1);
2469 +    }}
2470 +
2471 +    public void testRunAfterEither_sourceCancelled4() {
2472 +        for (ExecutionMode m : ExecutionMode.values())
2473 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2474 +        for (Integer v1 : new Integer[] { 1, null })
2475 +    {
2476 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2477 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
2478 +        final Noop r = new Noop(m);
2479 +
2480 +        assertTrue(f.cancel(mayInterruptIfRunning));
2481 +        g.complete(v1);
2482 +        final CompletableFuture<Void> h = m.runAfterEither(f, g, r);
2483 +
2484 +        // unspecified behavior
2485 +        Integer v;
2486 +        try {
2487 +            assertNull(h.join());
2488 +            assertEquals(1, r.invocationCount);
2489 +        } catch (CompletionException ok) {
2490 +            checkCompletedWithWrappedCancellationException(h);
2491 +            assertEquals(0, r.invocationCount);
2492 +        }
2493 +
2494 +        checkCancelled(f);
2495 +        checkCompletedNormally(g, v1);
2496 +    }}
2497 +
2498 +    /**
2499 +     * thenCompose result completes normally after normal completion of source
2500 +     */
2501 +    public void testThenCompose_normalCompletion() {
2502 +        for (ExecutionMode m : ExecutionMode.values())
2503 +        for (boolean createIncomplete : new boolean[] { true, false })
2504 +        for (Integer v1 : new Integer[] { 1, null })
2505 +    {
2506 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2507 +        final CompletableFutureInc r = new CompletableFutureInc(m);
2508 +        if (!createIncomplete) f.complete(v1);
2509 +        final CompletableFuture<Integer> g = m.thenCompose(f, r);
2510 +        if (createIncomplete) f.complete(v1);
2511 +
2512 +        checkCompletedNormally(g, inc(v1));
2513 +        checkCompletedNormally(f, v1);
2514 +        assertEquals(1, r.invocationCount);
2515 +    }}
2516 +
2517 +    /**
2518 +     * thenCompose result completes exceptionally after exceptional
2519 +     * completion of source
2520 +     */
2521 +    public void testThenCompose_exceptionalCompletion() {
2522 +        for (ExecutionMode m : ExecutionMode.values())
2523 +        for (boolean createIncomplete : new boolean[] { true, false })
2524 +    {
2525 +        final CFException ex = new CFException();
2526 +        final CompletableFutureInc r = new CompletableFutureInc(m);
2527 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2528 +        if (!createIncomplete) f.completeExceptionally(ex);
2529 +        final CompletableFuture<Integer> g = m.thenCompose(f, r);
2530 +        if (createIncomplete) f.completeExceptionally(ex);
2531 +
2532 +        checkCompletedWithWrappedCFException(g, ex);
2533 +        checkCompletedWithWrappedCFException(f, ex);
2534 +        assertEquals(0, r.invocationCount);
2535 +    }}
2536 +
2537 +    /**
2538 +     * thenCompose result completes exceptionally if action does
2539 +     */
2540 +    public void testThenCompose_actionFailed() {
2541 +        for (ExecutionMode m : ExecutionMode.values())
2542 +        for (boolean createIncomplete : new boolean[] { true, false })
2543 +        for (Integer v1 : new Integer[] { 1, null })
2544 +    {
2545 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2546 +        final FailingCompletableFutureFunction r
2547 +            = new FailingCompletableFutureFunction(m);
2548 +        if (!createIncomplete) f.complete(v1);
2549 +        final CompletableFuture<Integer> g = m.thenCompose(f, r);
2550 +        if (createIncomplete) f.complete(v1);
2551 +
2552 +        checkCompletedWithWrappedCFException(g);
2553 +        checkCompletedNormally(f, v1);
2554 +    }}
2555 +
2556 +    /**
2557 +     * thenCompose result completes exceptionally if source cancelled
2558 +     */
2559 +    public void testThenCompose_sourceCancelled() {
2560 +        for (ExecutionMode m : ExecutionMode.values())
2561 +        for (boolean createIncomplete : new boolean[] { true, false })
2562 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2563 +    {
2564 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2565 +        final CompletableFutureInc r = new CompletableFutureInc(m);
2566 +        if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
2567 +        final CompletableFuture<Integer> g = m.thenCompose(f, r);
2568 +        if (createIncomplete) {
2569 +            checkIncomplete(g);
2570 +            assertTrue(f.cancel(mayInterruptIfRunning));
2571 +        }
2572 +
2573 +        checkCompletedWithWrappedCancellationException(g);
2574 +        checkCancelled(f);
2575 +    }}
2576 +
2577 +    // other static methods
2578 +
2579 +    /**
2580 +     * allOf(no component futures) returns a future completed normally
2581 +     * with the value null
2582 +     */
2583 +    public void testAllOf_empty() throws Exception {
2584 +        CompletableFuture<Void> f = CompletableFuture.allOf();
2585 +        checkCompletedNormally(f, null);
2586 +    }
2587 +
2588 +    /**
2589 +     * allOf returns a future completed normally with the value null
2590 +     * when all components complete normally
2591 +     */
2592 +    public void testAllOf_normal() throws Exception {
2593 +        for (int k = 1; k < 20; ++k) {
2594 +            CompletableFuture<Integer>[] fs = (CompletableFuture<Integer>[]) new CompletableFuture[k];
2595 +            for (int i = 0; i < k; ++i)
2596 +                fs[i] = new CompletableFuture<>();
2597 +            CompletableFuture<Void> f = CompletableFuture.allOf(fs);
2598 +            for (int i = 0; i < k; ++i) {
2599 +                checkIncomplete(f);
2600 +                checkIncomplete(CompletableFuture.allOf(fs));
2601 +                fs[i].complete(one);
2602 +            }
2603 +            checkCompletedNormally(f, null);
2604 +            checkCompletedNormally(CompletableFuture.allOf(fs), null);
2605 +        }
2606 +    }
2607 +
2608 +    /**
2609 +     * anyOf(no component futures) returns an incomplete future
2610 +     */
2611 +    public void testAnyOf_empty() throws Exception {
2612 +        CompletableFuture<Object> f = CompletableFuture.anyOf();
2613 +        checkIncomplete(f);
2614 +    }
2615 +
2616 +    /**
2617 +     * anyOf returns a future completed normally with a value when
2618 +     * a component future does
2619 +     */
2620 +    public void testAnyOf_normal() throws Exception {
2621 +        for (int k = 0; k < 10; ++k) {
2622 +            CompletableFuture[] fs = new CompletableFuture[k];
2623 +            for (int i = 0; i < k; ++i)
2624 +                fs[i] = new CompletableFuture<>();
2625 +            CompletableFuture<Object> f = CompletableFuture.anyOf(fs);
2626 +            checkIncomplete(f);
2627 +            for (int i = 0; i < k; ++i) {
2628 +                fs[i].complete(one);
2629 +                checkCompletedNormally(f, one);
2630 +                checkCompletedNormally(CompletableFuture.anyOf(fs), one);
2631 +            }
2632 +        }
2633 +    }
2634 +
2635 +    /**
2636 +     * anyOf result completes exceptionally when any component does.
2637 +     */
2638 +    public void testAnyOf_exceptional() throws Exception {
2639 +        for (int k = 0; k < 10; ++k) {
2640 +            CompletableFuture[] fs = new CompletableFuture[k];
2641 +            for (int i = 0; i < k; ++i)
2642 +                fs[i] = new CompletableFuture<>();
2643 +            CompletableFuture<Object> f = CompletableFuture.anyOf(fs);
2644 +            checkIncomplete(f);
2645 +            for (int i = 0; i < k; ++i) {
2646 +                fs[i].completeExceptionally(new CFException());
2647 +                checkCompletedWithWrappedCFException(f);
2648 +                checkCompletedWithWrappedCFException(CompletableFuture.anyOf(fs));
2649 +            }
2650 +        }
2651 +    }
2652 +
2653 +    /**
2654 +     * Completion methods throw NullPointerException with null arguments
2655 +     */
2656 +    public void testNPE() {
2657 +        CompletableFuture<Integer> f = new CompletableFuture<>();
2658 +        CompletableFuture<Integer> g = new CompletableFuture<>();
2659 +        CompletableFuture<Integer> nullFuture = (CompletableFuture<Integer>)null;
2660 +        CompletableFuture<?> h;
2661 +        ThreadExecutor exec = new ThreadExecutor();
2662 +
2663 +        Runnable[] throwingActions = {
2664 +            () -> CompletableFuture.supplyAsync(null),
2665 +            () -> CompletableFuture.supplyAsync(null, exec),
2666 +            () -> CompletableFuture.supplyAsync(supplyOne, null),
2667 +
2668 +            () -> CompletableFuture.runAsync(null),
2669 +            () -> CompletableFuture.runAsync(null, exec),
2670 +            () -> CompletableFuture.runAsync(() -> {}, null),
2671 +
2672 +            () -> f.completeExceptionally(null),
2673 +
2674 +            () -> f.thenApply(null),
2675 +            () -> f.thenApplyAsync(null),
2676 +            () -> f.thenApplyAsync((x) -> x, null),
2677 +            () -> f.thenApplyAsync(null, exec),
2678 +
2679 +            () -> f.thenAccept(null),
2680 +            () -> f.thenAcceptAsync(null),
2681 +            () -> f.thenAcceptAsync((x) -> {} , null),
2682 +            () -> f.thenAcceptAsync(null, exec),
2683 +
2684 +            () -> f.thenRun(null),
2685 +            () -> f.thenRunAsync(null),
2686 +            () -> f.thenRunAsync(() -> {} , null),
2687 +            () -> f.thenRunAsync(null, exec),
2688 +
2689 +            () -> f.thenCombine(g, null),
2690 +            () -> f.thenCombineAsync(g, null),
2691 +            () -> f.thenCombineAsync(g, null, exec),
2692 +            () -> f.thenCombine(nullFuture, (x, y) -> x),
2693 +            () -> f.thenCombineAsync(nullFuture, (x, y) -> x),
2694 +            () -> f.thenCombineAsync(nullFuture, (x, y) -> x, exec),
2695 +            () -> f.thenCombineAsync(g, (x, y) -> x, null),
2696 +
2697 +            () -> f.thenAcceptBoth(g, null),
2698 +            () -> f.thenAcceptBothAsync(g, null),
2699 +            () -> f.thenAcceptBothAsync(g, null, exec),
2700 +            () -> f.thenAcceptBoth(nullFuture, (x, y) -> {}),
2701 +            () -> f.thenAcceptBothAsync(nullFuture, (x, y) -> {}),
2702 +            () -> f.thenAcceptBothAsync(nullFuture, (x, y) -> {}, exec),
2703 +            () -> f.thenAcceptBothAsync(g, (x, y) -> {}, null),
2704 +
2705 +            () -> f.runAfterBoth(g, null),
2706 +            () -> f.runAfterBothAsync(g, null),
2707 +            () -> f.runAfterBothAsync(g, null, exec),
2708 +            () -> f.runAfterBoth(nullFuture, () -> {}),
2709 +            () -> f.runAfterBothAsync(nullFuture, () -> {}),
2710 +            () -> f.runAfterBothAsync(nullFuture, () -> {}, exec),
2711 +            () -> f.runAfterBothAsync(g, () -> {}, null),
2712 +
2713 +            () -> f.applyToEither(g, null),
2714 +            () -> f.applyToEitherAsync(g, null),
2715 +            () -> f.applyToEitherAsync(g, null, exec),
2716 +            () -> f.applyToEither(nullFuture, (x) -> x),
2717 +            () -> f.applyToEitherAsync(nullFuture, (x) -> x),
2718 +            () -> f.applyToEitherAsync(nullFuture, (x) -> x, exec),
2719 +            () -> f.applyToEitherAsync(g, (x) -> x, null),
2720 +
2721 +            () -> f.acceptEither(g, null),
2722 +            () -> f.acceptEitherAsync(g, null),
2723 +            () -> f.acceptEitherAsync(g, null, exec),
2724 +            () -> f.acceptEither(nullFuture, (x) -> {}),
2725 +            () -> f.acceptEitherAsync(nullFuture, (x) -> {}),
2726 +            () -> f.acceptEitherAsync(nullFuture, (x) -> {}, exec),
2727 +            () -> f.acceptEitherAsync(g, (x) -> {}, null),
2728 +
2729 +            () -> f.runAfterEither(g, null),
2730 +            () -> f.runAfterEitherAsync(g, null),
2731 +            () -> f.runAfterEitherAsync(g, null, exec),
2732 +            () -> f.runAfterEither(nullFuture, () -> {}),
2733 +            () -> f.runAfterEitherAsync(nullFuture, () -> {}),
2734 +            () -> f.runAfterEitherAsync(nullFuture, () -> {}, exec),
2735 +            () -> f.runAfterEitherAsync(g, () -> {}, null),
2736 +
2737 +            () -> f.thenCompose(null),
2738 +            () -> f.thenComposeAsync(null),
2739 +            () -> f.thenComposeAsync(new CompletableFutureInc(ExecutionMode.EXECUTOR), null),
2740 +            () -> f.thenComposeAsync(null, exec),
2741 +
2742 +            () -> f.exceptionally(null),
2743 +
2744 +            () -> f.handle(null),
2745 +
2746 +            () -> CompletableFuture.allOf((CompletableFuture<?>)null),
2747 +            () -> CompletableFuture.allOf((CompletableFuture<?>[])null),
2748 +            () -> CompletableFuture.allOf(f, null),
2749 +            () -> CompletableFuture.allOf(null, f),
2750 +
2751 +            () -> CompletableFuture.anyOf((CompletableFuture<?>)null),
2752 +            () -> CompletableFuture.anyOf((CompletableFuture<?>[])null),
2753 +            () -> CompletableFuture.anyOf(f, null),
2754 +            () -> CompletableFuture.anyOf(null, f),
2755 +
2756 +            () -> f.obtrudeException(null),
2757 +        };
2758 +
2759 +        assertThrows(NullPointerException.class, throwingActions);
2760 +        assertEquals(0, exec.count.get());
2761 +    }
2762 +
2763 +    /**
2764 +     * toCompletableFuture returns this CompletableFuture.
2765 +     */
2766 +    public void testToCompletableFuture() {
2767 +        CompletableFuture<Integer> f = new CompletableFuture<>();
2768 +        assertSame(f, f.toCompletableFuture());
2769 +    }
2770 +
2771 +    /**
2772 +     * whenComplete action executes on normal completion, propagating
2773 +     * source result.
2774 +     */
2775 +    public void testWhenComplete_normalCompletion1() {
2776 +        for (ExecutionMode m : ExecutionMode.values())
2777 +        for (boolean createIncomplete : new boolean[] { true, false })
2778 +        for (Integer v1 : new Integer[] { 1, null })
2779 +    {
2780 +        final AtomicInteger a = new AtomicInteger(0);
2781 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2782 +        if (!createIncomplete) f.complete(v1);
2783 +        final CompletableFuture<Integer> g = m.whenComplete
2784 +            (f,
2785 +             (Integer x, Throwable t) -> {
2786 +                threadAssertSame(x, v1);
2787 +                threadAssertNull(t);
2788 +                a.getAndIncrement();
2789 +            });
2790 +        if (createIncomplete) f.complete(v1);
2791 +
2792 +        checkCompletedNormally(g, v1);
2793 +        checkCompletedNormally(f, v1);
2794 +        assertEquals(1, a.get());
2795 +    }}
2796 +
2797 +    /**
2798 +     * whenComplete action executes on exceptional completion, propagating
2799 +     * source result.
2800 +     */
2801 +    public void testWhenComplete_exceptionalCompletion() {
2802 +        for (ExecutionMode m : ExecutionMode.values())
2803 +        for (boolean createIncomplete : new boolean[] { true, false })
2804 +        for (Integer v1 : new Integer[] { 1, null })
2805 +    {
2806 +        final AtomicInteger a = new AtomicInteger(0);
2807 +        final CFException ex = new CFException();
2808 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2809 +        if (!createIncomplete) f.completeExceptionally(ex);
2810 +        final CompletableFuture<Integer> g = m.whenComplete
2811 +            (f,
2812 +             (Integer x, Throwable t) -> {
2813 +                threadAssertNull(x);
2814 +                threadAssertSame(t, ex);
2815 +                a.getAndIncrement();
2816 +            });
2817 +        if (createIncomplete) f.completeExceptionally(ex);
2818 +        checkCompletedWithWrappedCFException(f, ex);
2819 +        checkCompletedWithWrappedCFException(g, ex);
2820 +        assertEquals(1, a.get());
2821 +    }}
2822 +
2823 +    /**
2824 +     * whenComplete action executes on cancelled source, propagating
2825 +     * CancellationException.
2826 +     */
2827 +    public void testWhenComplete_sourceCancelled() {
2828 +        for (ExecutionMode m : ExecutionMode.values())
2829 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2830 +        for (boolean createIncomplete : new boolean[] { true, false })
2831 +    {
2832 +        final AtomicInteger a = new AtomicInteger(0);
2833 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2834 +        if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
2835 +        final CompletableFuture<Integer> g = m.whenComplete
2836 +            (f,
2837 +             (Integer x, Throwable t) -> {
2838 +                threadAssertNull(x);
2839 +                threadAssertTrue(t instanceof CancellationException);
2840 +                a.getAndIncrement();
2841 +            });
2842 +        if (createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
2843 +
2844 +        //try { g.join(); } catch (Throwable t) { throw new Error(t); }
2845 +        checkCompletedWithWrappedCancellationException(g);
2846 +        checkCancelled(f);
2847 +        assertEquals(1, a.get());
2848 +    }}
2849 +
2850 +    /**
2851 +     * If a whenComplete action throws an exception when triggered by
2852 +     * a normal completion, it completes exceptionally
2853 +     */
2854 +    public void testWhenComplete_actionFailed() {
2855 +        for (boolean createIncomplete : new boolean[] { true, false })
2856 +        for (ExecutionMode m : ExecutionMode.values())
2857 +        for (Integer v1 : new Integer[] { 1, null })
2858 +    {
2859 +        final AtomicInteger a = new AtomicInteger(0);
2860 +        final CFException ex = new CFException();
2861 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2862 +        if (!createIncomplete) f.complete(v1);
2863 +        final CompletableFuture<Integer> g = m.whenComplete
2864 +            (f,
2865 +             (Integer x, Throwable t) -> {
2866 +                threadAssertSame(x, v1);
2867 +                threadAssertNull(t);
2868 +                a.getAndIncrement();
2869 +                throw ex;
2870 +            });
2871 +        if (createIncomplete) f.complete(v1);
2872 +        checkCompletedNormally(f, v1);
2873 +        checkCompletedWithWrappedCFException(g, ex);
2874 +        assertEquals(1, a.get());
2875 +    }}
2876 +
2877 +    /**
2878 +     * If a whenComplete action throws an exception when triggered by
2879 +     * a source completion that also throws an exception, the source
2880 +     * exception takes precedence.
2881 +     */
2882 +    public void testWhenComplete_actionFailedSourceFailed() {
2883 +        for (boolean createIncomplete : new boolean[] { true, false })
2884 +        for (ExecutionMode m : ExecutionMode.values())
2885 +        for (Integer v1 : new Integer[] { 1, null })
2886 +    {
2887 +        final AtomicInteger a = new AtomicInteger(0);
2888 +        final CFException ex1 = new CFException();
2889 +        final CFException ex2 = new CFException();
2890 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
2891 +
2892 +        if (!createIncomplete) f.completeExceptionally(ex1);
2893 +        final CompletableFuture<Integer> g = m.whenComplete
2894 +            (f,
2895 +             (Integer x, Throwable t) -> {
2896 +                threadAssertSame(t, ex1);
2897 +                threadAssertNull(x);
2898 +                a.getAndIncrement();
2899 +                throw ex2;
2900 +            });
2901 +        if (createIncomplete) f.completeExceptionally(ex1);
2902 +
2903 +        checkCompletedWithWrappedCFException(f, ex1);
2904 +        checkCompletedWithWrappedCFException(g, ex1);
2905 +        assertEquals(1, a.get());
2906 +    }}
2907 +
2908   }

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