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Comparing jsr166/src/test/tck/CompletableFutureTest.java (file contents):
Revision 1.17 by jsr166, Thu Apr 4 04:16:02 2013 UTC vs.
Revision 1.77 by jsr166, Sat Jun 7 21:46:50 2014 UTC

# Line 16 | Line 16 | import java.util.concurrent.ExecutionExc
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;
# Line 55 | Line 58 | public class CompletableFutureTest exten
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 {
# Line 63 | Line 69 | public class CompletableFutureTest exten
69          try {
70              assertEquals(value, f.get());
71          } catch (Throwable fail) { threadUnexpectedException(fail); }
66        try {
67            assertEquals(value, f.get(0L, SECONDS));
68        } 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) {
# Line 90 | Line 100 | public class CompletableFutureTest exten
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 +    <U> void checkCompletedExceptionallyWithRootCause(CompletableFuture<U> f,
109 +                                                      Throwable ex) {
110          try {
111 <            f.get(0L, SECONDS);
111 >            f.get(LONG_DELAY_MS, MILLISECONDS);
112              shouldThrow();
113          } catch (ExecutionException success) {
114 <            assertTrue(success.getCause() instanceof CFException);
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 +
135          assertTrue(f.isDone());
136          assertFalse(f.isCancelled());
137          assertTrue(f.toString().contains("[Completed exceptionally]"));
138      }
139  
140 +    <U> void checkCompletedWithWrappedException(CompletableFuture<U> f,
141 +                                                Throwable ex) {
142 +        checkCompletedExceptionallyWithRootCause(f, ex);
143 +        try {
144 +            CompletableFuture<Throwable> spy = f.handle
145 +                ((U u, Throwable t) -> t);
146 +            assertTrue(spy.join() instanceof CompletionException);
147 +            assertSame(ex, spy.join().getCause());
148 +        } catch (Throwable fail) { threadUnexpectedException(fail); }
149 +    }
150 +
151 +    <U> void checkCompletedExceptionally(CompletableFuture<U> f, Throwable ex) {
152 +        checkCompletedExceptionallyWithRootCause(f, ex);
153 +        try {
154 +            CompletableFuture<Throwable> spy = f.handle
155 +                ((U u, Throwable t) -> t);
156 +            assertSame(ex, spy.join());
157 +        } catch (Throwable fail) { threadUnexpectedException(fail); }
158 +    }
159 +
160      void checkCancelled(CompletableFuture<?> f) {
161          try {
162 +            f.get(LONG_DELAY_MS, MILLISECONDS);
163 +            shouldThrow();
164 +        } catch (CancellationException success) {
165 +        } catch (Throwable fail) { threadUnexpectedException(fail); }
166 +        try {
167              f.join();
168              shouldThrow();
169          } catch (CancellationException success) {}
# Line 115 | Line 176 | public class CompletableFutureTest exten
176              shouldThrow();
177          } catch (CancellationException success) {
178          } catch (Throwable fail) { threadUnexpectedException(fail); }
118        try {
119            f.get(0L, SECONDS);
120            shouldThrow();
121        } catch (CancellationException success) {
122        } catch (Throwable fail) { threadUnexpectedException(fail); }
179          assertTrue(f.isDone());
180 +        assertTrue(f.isCompletedExceptionally());
181          assertTrue(f.isCancelled());
182          assertTrue(f.toString().contains("[Completed exceptionally]"));
183      }
184  
185      void checkCompletedWithWrappedCancellationException(CompletableFuture<?> f) {
186          try {
187 +            f.get(LONG_DELAY_MS, MILLISECONDS);
188 +            shouldThrow();
189 +        } catch (ExecutionException success) {
190 +            assertTrue(success.getCause() instanceof CancellationException);
191 +        } catch (Throwable fail) { threadUnexpectedException(fail); }
192 +        try {
193              f.join();
194              shouldThrow();
195          } catch (CompletionException success) {
# Line 144 | Line 207 | public class CompletableFutureTest exten
207          } catch (ExecutionException success) {
208              assertTrue(success.getCause() instanceof CancellationException);
209          } catch (Throwable fail) { threadUnexpectedException(fail); }
147        try {
148            f.get(0L, SECONDS);
149            shouldThrow();
150        } catch (ExecutionException success) {
151            assertTrue(success.getCause() instanceof CancellationException);
152        } catch (Throwable fail) { threadUnexpectedException(fail); }
210          assertTrue(f.isDone());
211          assertFalse(f.isCancelled());
212 +        assertTrue(f.isCompletedExceptionally());
213          assertTrue(f.toString().contains("[Completed exceptionally]"));
214      }
215  
# Line 160 | Line 218 | public class CompletableFutureTest exten
218       * by methods isDone, isCancelled, and getNow
219       */
220      public void testConstructor() {
221 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
221 >        CompletableFuture<Integer> f = new CompletableFuture<>();
222          checkIncomplete(f);
223      }
224  
# Line 169 | Line 227 | public class CompletableFutureTest exten
227       * isCancelled, join, get, and getNow
228       */
229      public void testComplete() {
230 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
230 >        CompletableFuture<Integer> f = new CompletableFuture<>();
231          checkIncomplete(f);
232          f.complete(one);
233          checkCompletedNormally(f, one);
# Line 180 | Line 238 | public class CompletableFutureTest exten
238       * methods isDone, isCancelled, join, get, and getNow
239       */
240      public void testCompleteExceptionally() {
241 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
241 >        CompletableFuture<Integer> f = new CompletableFuture<>();
242 >        CFException ex = new CFException();
243          checkIncomplete(f);
244 <        f.completeExceptionally(new CFException());
245 <        checkCompletedWithWrappedCFException(f);
244 >        f.completeExceptionally(ex);
245 >        checkCompletedExceptionally(f, ex);
246      }
247  
248      /**
# Line 191 | Line 250 | public class CompletableFutureTest exten
250       * methods isDone, isCancelled, join, get, and getNow
251       */
252      public void testCancel() {
253 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
253 >        CompletableFuture<Integer> f = new CompletableFuture<>();
254          checkIncomplete(f);
255          assertTrue(f.cancel(true));
256          checkCancelled(f);
# Line 201 | Line 260 | public class CompletableFutureTest exten
260       * obtrudeValue forces completion with given value
261       */
262      public void testObtrudeValue() {
263 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
263 >        CompletableFuture<Integer> f = new CompletableFuture<>();
264          checkIncomplete(f);
265          f.complete(one);
266          checkCompletedNormally(f, one);
# Line 209 | Line 268 | public class CompletableFutureTest exten
268          checkCompletedNormally(f, three);
269          f.obtrudeValue(two);
270          checkCompletedNormally(f, two);
271 <        f = new CompletableFuture<Integer>();
271 >        f = new CompletableFuture<>();
272          f.obtrudeValue(three);
273          checkCompletedNormally(f, three);
274 <        f = new CompletableFuture<Integer>();
274 >        f.obtrudeValue(null);
275 >        checkCompletedNormally(f, null);
276 >        f = new CompletableFuture<>();
277          f.completeExceptionally(new CFException());
278          f.obtrudeValue(four);
279          checkCompletedNormally(f, four);
# Line 222 | Line 283 | public class CompletableFutureTest exten
283       * obtrudeException forces completion with given exception
284       */
285      public void testObtrudeException() {
286 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
287 <        checkIncomplete(f);
288 <        f.complete(one);
289 <        checkCompletedNormally(f, one);
290 <        f.obtrudeException(new CFException());
291 <        checkCompletedWithWrappedCFException(f);
292 <        f = new CompletableFuture<Integer>();
293 <        f.obtrudeException(new CFException());
294 <        checkCompletedWithWrappedCFException(f);
295 <        f = new CompletableFuture<Integer>();
296 <        f.completeExceptionally(new CFException());
297 <        f.obtrudeValue(four);
298 <        checkCompletedNormally(f, four);
299 <        f.obtrudeException(new CFException());
300 <        checkCompletedWithWrappedCFException(f);
301 <    }
286 >        for (Integer v1 : new Integer[] { 1, null })
287 >    {
288 >        CFException ex;
289 >        CompletableFuture<Integer> f;
290 >
291 >        f = new CompletableFuture<>();
292 >        f.complete(v1);
293 >        for (int i = 0; i < 2; i++) {
294 >            f.obtrudeException(ex = new CFException());
295 >            checkCompletedExceptionally(f, ex);
296 >        }
297 >
298 >        f = new CompletableFuture<>();
299 >        for (int i = 0; i < 2; i++) {
300 >            f.obtrudeException(ex = new CFException());
301 >            checkCompletedExceptionally(f, ex);
302 >        }
303 >
304 >        f = new CompletableFuture<>();
305 >        f.completeExceptionally(ex = new CFException());
306 >        f.obtrudeValue(v1);
307 >        checkCompletedNormally(f, v1);
308 >        f.obtrudeException(ex = new CFException());
309 >        checkCompletedExceptionally(f, ex);
310 >        f.completeExceptionally(new CFException());
311 >        checkCompletedExceptionally(f, ex);
312 >        f.complete(v1);
313 >        checkCompletedExceptionally(f, ex);
314 >    }}
315  
316      /**
317       * getNumberOfDependents returns number of dependent tasks
318       */
319      public void testGetNumberOfDependents() {
320 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
321 <        assertEquals(f.getNumberOfDependents(), 0);
322 <        CompletableFuture g = f.thenRun(new Noop());
323 <        assertEquals(f.getNumberOfDependents(), 1);
324 <        assertEquals(g.getNumberOfDependents(), 0);
325 <        CompletableFuture h = f.thenRun(new Noop());
326 <        assertEquals(f.getNumberOfDependents(), 2);
320 >        for (ExecutionMode m : ExecutionMode.values())
321 >    {
322 >        CompletableFuture<Integer> f = new CompletableFuture<>();
323 >        assertEquals(0, f.getNumberOfDependents());
324 >        final CompletableFuture<Void> g = m.thenRun(f, new Noop(m));
325 >        assertEquals(1, f.getNumberOfDependents());
326 >        assertEquals(0, g.getNumberOfDependents());
327 >        final CompletableFuture<Void> h = m.thenRun(f, new Noop(m));
328 >        assertEquals(2, f.getNumberOfDependents());
329 >        assertEquals(0, h.getNumberOfDependents());
330          f.complete(1);
331          checkCompletedNormally(g, null);
332 <        assertEquals(f.getNumberOfDependents(), 0);
333 <        assertEquals(g.getNumberOfDependents(), 0);
334 <    }
335 <
332 >        checkCompletedNormally(h, null);
333 >        assertEquals(0, f.getNumberOfDependents());
334 >        assertEquals(0, g.getNumberOfDependents());
335 >        assertEquals(0, h.getNumberOfDependents());
336 >    }}
337  
338      /**
339       * toString indicates current completion state
# Line 272 | Line 350 | public class CompletableFutureTest exten
350          f = new CompletableFuture<String>();
351          f.completeExceptionally(new IndexOutOfBoundsException());
352          assertTrue(f.toString().contains("[Completed exceptionally]"));
353 +
354 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false }) {
355 +            f = new CompletableFuture<String>();
356 +            f.cancel(mayInterruptIfRunning);
357 +            assertTrue(f.toString().contains("[Completed exceptionally]"));
358 +        }
359      }
360  
361      /**
# Line 282 | Line 366 | public class CompletableFutureTest exten
366          checkCompletedNormally(f, "test");
367      }
368  
369 <    static final Supplier<Integer> supplyOne =
370 <        () -> Integer.valueOf(1);
371 <    static final Function<Integer, Integer> inc =
372 <        (Integer x) -> Integer.valueOf(x.intValue() + 1);
373 <    static final BiFunction<Integer, Integer, Integer> add =
374 <        (Integer x, Integer y) -> Integer.valueOf(x.intValue() + y.intValue());
375 <    static final class IncAction implements Consumer<Integer> {
292 <        int value;
293 <        public void accept(Integer x) { value = x.intValue() + 1; }
294 <    }
295 <    static final class AddAction implements BiConsumer<Integer, Integer> {
296 <        int value;
297 <        public void accept(Integer x, Integer y) {
298 <            value = x.intValue() + y.intValue();
369 >    abstract class CheckedAction {
370 >        int invocationCount = 0;
371 >        final ExecutionMode m;
372 >        CheckedAction(ExecutionMode m) { this.m = m; }
373 >        void invoked() {
374 >            m.checkExecutionMode();
375 >            assertEquals(0, invocationCount++);
376          }
377 <    }
378 <    static final class Noop implements Runnable {
302 <        boolean ran;
303 <        public void run() { ran = true; }
377 >        void assertNotInvoked() { assertEquals(0, invocationCount); }
378 >        void assertInvoked() { assertEquals(1, invocationCount); }
379      }
380  
381 <    static final class FailingSupplier implements Supplier<Integer> {
382 <        boolean ran;
383 <        public Integer get() { ran = true; throw new CFException(); }
384 <    }
385 <    static final class FailingConsumer implements Consumer<Integer> {
386 <        boolean ran;
312 <        public void accept(Integer x) { ran = true; throw new CFException(); }
313 <    }
314 <    static final class FailingBiConsumer implements BiConsumer<Integer, Integer> {
315 <        boolean ran;
316 <        public void accept(Integer x, Integer y) { ran = true; throw new CFException(); }
317 <    }
318 <    static final class FailingFunction implements Function<Integer, Integer> {
319 <        boolean ran;
320 <        public Integer apply(Integer x) { ran = true; throw new CFException(); }
321 <    }
322 <    static final class FailingBiFunction implements BiFunction<Integer, Integer, Integer> {
323 <        boolean ran;
324 <        public Integer apply(Integer x, Integer y) { ran = true; throw new CFException(); }
325 <    }
326 <    static final class FailingNoop implements Runnable {
327 <        boolean ran;
328 <        public void run() { ran = true; throw new CFException(); }
329 <    }
330 <
331 <    static final class CompletableFutureInc implements Function<Integer, CompletableFuture<Integer>> {
332 <        public CompletableFuture<Integer> apply(Integer x) {
333 <            CompletableFuture<Integer> f = new CompletableFuture<Integer>();
334 <            f.complete(Integer.valueOf(x.intValue() + 1));
335 <            return f;
381 >    abstract class CheckedIntegerAction extends CheckedAction {
382 >        Integer value;
383 >        CheckedIntegerAction(ExecutionMode m) { super(m); }
384 >        void assertValue(Integer expected) {
385 >            assertInvoked();
386 >            assertEquals(expected, value);
387          }
388      }
389  
390 <    static final class FailingCompletableFutureFunction implements Function<Integer, CompletableFuture<Integer>> {
391 <        boolean ran;
392 <        public CompletableFuture<Integer> apply(Integer x) {
393 <            ran = true; throw new CFException();
390 >    class IntegerSupplier extends CheckedAction
391 >        implements Supplier<Integer>
392 >    {
393 >        final Integer value;
394 >        IntegerSupplier(ExecutionMode m, Integer value) {
395 >            super(m);
396 >            this.value = value;
397          }
398 <    }
399 <
400 <    // Used for explicit executor tests
347 <    static final class ThreadExecutor implements Executor {
348 <        AtomicInteger count = new AtomicInteger(0);
349 <
350 <        public void execute(Runnable r) {
351 <            count.getAndIncrement();
352 <            new Thread(r).start();
398 >        public Integer get() {
399 >            invoked();
400 >            return value;
401          }
402      }
403  
404 <    static final class ExceptionToInteger implements Function<Throwable, Integer> {
405 <        public Integer apply(Throwable x) { return Integer.valueOf(3); }
404 >    // A function that handles and produces null values as well.
405 >    static Integer inc(Integer x) {
406 >        return (x == null) ? null : x + 1;
407      }
408  
409 <    static final class IntegerHandler implements BiFunction<Integer, Throwable, Integer> {
410 <        boolean ran;
411 <        public Integer apply(Integer x, Throwable t) {
412 <            ran = true;
413 <            return (t == null) ? two : three;
409 >    class NoopConsumer extends CheckedIntegerAction
410 >        implements Consumer<Integer>
411 >    {
412 >        NoopConsumer(ExecutionMode m) { super(m); }
413 >        public void accept(Integer x) {
414 >            invoked();
415 >            value = x;
416          }
417      }
418  
419 <
420 <    /**
421 <     * exceptionally action completes with function value on source
422 <     * exception;  otherwise with source value
423 <     */
424 <    public void testExceptionally() {
425 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
426 <        ExceptionToInteger r = new ExceptionToInteger();
376 <        CompletableFuture<Integer> g = f.exceptionally(r);
377 <        f.completeExceptionally(new CFException());
378 <        checkCompletedNormally(g, three);
379 <
380 <        f = new CompletableFuture<Integer>();
381 <        r = new ExceptionToInteger();
382 <        g = f.exceptionally(r);
383 <        f.complete(one);
384 <        checkCompletedNormally(g, one);
385 <    }
386 <
387 <    /**
388 <     * handle action completes normally with function value on either
389 <     * normal or exceptional completion of source
390 <     */
391 <    public void testHandle() {
392 <        CompletableFuture<Integer> f, g;
393 <        IntegerHandler r;
394 <
395 <        f = new CompletableFuture<Integer>();
396 <        f.completeExceptionally(new CFException());
397 <        g = f.handle(r = new IntegerHandler());
398 <        assertTrue(r.ran);
399 <        checkCompletedNormally(g, three);
400 <
401 <        f = new CompletableFuture<Integer>();
402 <        g = f.handle(r = new IntegerHandler());
403 <        assertFalse(r.ran);
404 <        f.completeExceptionally(new CFException());
405 <        checkCompletedNormally(g, three);
406 <        assertTrue(r.ran);
407 <
408 <        f = new CompletableFuture<Integer>();
409 <        f.complete(one);
410 <        g = f.handle(r = new IntegerHandler());
411 <        assertTrue(r.ran);
412 <        checkCompletedNormally(g, two);
413 <
414 <        f = new CompletableFuture<Integer>();
415 <        g = f.handle(r = new IntegerHandler());
416 <        assertFalse(r.ran);
417 <        f.complete(one);
418 <        assertTrue(r.ran);
419 <        checkCompletedNormally(g, two);
420 <    }
421 <
422 <    /**
423 <     * runAsync completes after running Runnable
424 <     */
425 <    public void testRunAsync() {
426 <        Noop r = new Noop();
427 <        CompletableFuture<Void> f = CompletableFuture.runAsync(r);
428 <        assertNull(f.join());
429 <        assertTrue(r.ran);
430 <        checkCompletedNormally(f, null);
431 <    }
432 <
433 <    /**
434 <     * runAsync with executor completes after running Runnable
435 <     */
436 <    public void testRunAsync2() {
437 <        Noop r = new Noop();
438 <        ThreadExecutor exec = new ThreadExecutor();
439 <        CompletableFuture<Void> f = CompletableFuture.runAsync(r, exec);
440 <        assertNull(f.join());
441 <        assertTrue(r.ran);
442 <        checkCompletedNormally(f, null);
443 <        assertEquals(1, exec.count.get());
444 <    }
445 <
446 <    /**
447 <     * failing runAsync completes exceptionally after running Runnable
448 <     */
449 <    public void testRunAsync3() {
450 <        FailingNoop r = new FailingNoop();
451 <        CompletableFuture<Void> f = CompletableFuture.runAsync(r);
452 <        checkCompletedWithWrappedCFException(f);
453 <        assertTrue(r.ran);
454 <    }
455 <
456 <    /**
457 <     * supplyAsync completes with result of supplier
458 <     */
459 <    public void testSupplyAsync() {
460 <        CompletableFuture<Integer> f;
461 <        f = CompletableFuture.supplyAsync(supplyOne);
462 <        assertEquals(f.join(), one);
463 <        checkCompletedNormally(f, one);
464 <    }
465 <
466 <    /**
467 <     * supplyAsync with executor completes with result of supplier
468 <     */
469 <    public void testSupplyAsync2() {
470 <        CompletableFuture<Integer> f;
471 <        f = CompletableFuture.supplyAsync(supplyOne, new ThreadExecutor());
472 <        assertEquals(f.join(), one);
473 <        checkCompletedNormally(f, one);
474 <    }
475 <
476 <    /**
477 <     * Failing supplyAsync completes exceptionally
478 <     */
479 <    public void testSupplyAsync3() {
480 <        FailingSupplier r = new FailingSupplier();
481 <        CompletableFuture<Integer> f = CompletableFuture.supplyAsync(r);
482 <        checkCompletedWithWrappedCFException(f);
483 <        assertTrue(r.ran);
484 <    }
485 <
486 <    // seq completion methods
487 <
488 <    /**
489 <     * thenRun result completes normally after normal completion of source
490 <     */
491 <    public void testThenRun() {
492 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
493 <        Noop r = new Noop();
494 <        CompletableFuture<Void> g = f.thenRun(r);
495 <        f.complete(null);
496 <        checkCompletedNormally(g, null);
497 <        // reordered version
498 <        f = new CompletableFuture<Integer>();
499 <        f.complete(null);
500 <        r = new Noop();
501 <        g = f.thenRun(r);
502 <        checkCompletedNormally(g, null);
503 <    }
504 <
505 <    /**
506 <     * thenRun result completes exceptionally after exceptional
507 <     * completion of source
508 <     */
509 <    public void testThenRun2() {
510 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
511 <        Noop r = new Noop();
512 <        CompletableFuture<Void> g = f.thenRun(r);
513 <        f.completeExceptionally(new CFException());
514 <        checkCompletedWithWrappedCFException(g);
515 <    }
516 <
517 <    /**
518 <     * thenRun result completes exceptionally if action does
519 <     */
520 <    public void testThenRun3() {
521 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
522 <        FailingNoop r = new FailingNoop();
523 <        CompletableFuture<Void> g = f.thenRun(r);
524 <        f.complete(null);
525 <        checkCompletedWithWrappedCFException(g);
526 <    }
527 <
528 <    /**
529 <     * thenRun result completes exceptionally if source cancelled
530 <     */
531 <    public void testThenRun4() {
532 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
533 <        Noop r = new Noop();
534 <        CompletableFuture<Void> g = f.thenRun(r);
535 <        assertTrue(f.cancel(true));
536 <        checkCompletedWithWrappedCancellationException(g);
537 <    }
538 <
539 <    /**
540 <     * thenApply result completes normally after normal completion of source
541 <     */
542 <    public void testThenApply() {
543 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
544 <        CompletableFuture<Integer> g = f.thenApply(inc);
545 <        f.complete(one);
546 <        checkCompletedNormally(g, two);
419 >    class IncFunction extends CheckedIntegerAction
420 >        implements Function<Integer,Integer>
421 >    {
422 >        IncFunction(ExecutionMode m) { super(m); }
423 >        public Integer apply(Integer x) {
424 >            invoked();
425 >            return value = inc(x);
426 >        }
427      }
428  
429 <    /**
430 <     * thenApply result completes exceptionally after exceptional
431 <     * completion of source
432 <     */
433 <    public void testThenApply2() {
434 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
555 <        CompletableFuture<Integer> g = f.thenApply(inc);
556 <        f.completeExceptionally(new CFException());
557 <        checkCompletedWithWrappedCFException(g);
429 >    // Choose non-commutative actions for better coverage
430 >    // A non-commutative function that handles and produces null values as well.
431 >    static Integer subtract(Integer x, Integer y) {
432 >        return (x == null && y == null) ? null :
433 >            ((x == null) ? 42 : x.intValue())
434 >            - ((y == null) ? 99 : y.intValue());
435      }
436  
437 <    /**
438 <     * thenApply result completes exceptionally if action does
439 <     */
440 <    public void testThenApply3() {
441 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
442 <        CompletableFuture<Integer> g = f.thenApply(new FailingFunction());
443 <        f.complete(one);
444 <        checkCompletedWithWrappedCFException(g);
437 >    class SubtractAction extends CheckedIntegerAction
438 >        implements BiConsumer<Integer, Integer>
439 >    {
440 >        SubtractAction(ExecutionMode m) { super(m); }
441 >        public void accept(Integer x, Integer y) {
442 >            invoked();
443 >            value = subtract(x, y);
444 >        }
445      }
446  
447 <    /**
448 <     * thenApply result completes exceptionally if source cancelled
449 <     */
450 <    public void testThenApply4() {
451 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
452 <        CompletableFuture<Integer> g = f.thenApply(inc);
453 <        assertTrue(f.cancel(true));
454 <        checkCompletedWithWrappedCancellationException(g);
447 >    class SubtractFunction extends CheckedIntegerAction
448 >        implements BiFunction<Integer, Integer, Integer>
449 >    {
450 >        SubtractFunction(ExecutionMode m) { super(m); }
451 >        public Integer apply(Integer x, Integer y) {
452 >            invoked();
453 >            return value = subtract(x, y);
454 >        }
455      }
456  
457 <    /**
458 <     * thenAccept result completes normally after normal completion of source
459 <     */
460 <    public void testThenAccept() {
461 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
585 <        IncAction r = new IncAction();
586 <        CompletableFuture<Void> g = f.thenAccept(r);
587 <        f.complete(one);
588 <        checkCompletedNormally(g, null);
589 <        assertEquals(r.value, 2);
457 >    class Noop extends CheckedAction implements Runnable {
458 >        Noop(ExecutionMode m) { super(m); }
459 >        public void run() {
460 >            invoked();
461 >        }
462      }
463  
464 <    /**
465 <     * thenAccept result completes exceptionally after exceptional
466 <     * completion of source
467 <     */
468 <    public void testThenAccept2() {
469 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
470 <        IncAction r = new IncAction();
471 <        CompletableFuture<Void> g = f.thenAccept(r);
600 <        f.completeExceptionally(new CFException());
601 <        checkCompletedWithWrappedCFException(g);
464 >    class FailingSupplier extends CheckedAction
465 >        implements Supplier<Integer>
466 >    {
467 >        FailingSupplier(ExecutionMode m) { super(m); }
468 >        public Integer get() {
469 >            invoked();
470 >            throw new CFException();
471 >        }
472      }
473  
474 <    /**
475 <     * thenAccept result completes exceptionally if action does
476 <     */
477 <    public void testThenAccept3() {
478 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
479 <        FailingConsumer r = new FailingConsumer();
480 <        CompletableFuture<Void> g = f.thenAccept(r);
481 <        f.complete(one);
482 <        checkCompletedWithWrappedCFException(g);
613 <        assertTrue(r.ran);
474 >    class FailingConsumer extends CheckedIntegerAction
475 >        implements Consumer<Integer>
476 >    {
477 >        FailingConsumer(ExecutionMode m) { super(m); }
478 >        public void accept(Integer x) {
479 >            invoked();
480 >            value = x;
481 >            throw new CFException();
482 >        }
483      }
484  
485 <    /**
486 <     * thenAccept result completes exceptionally if source cancelled
487 <     */
488 <    public void testThenAccept4() {
489 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
490 <        IncAction r = new IncAction();
491 <        CompletableFuture<Void> g = f.thenAccept(r);
492 <        assertTrue(f.cancel(true));
493 <        checkCompletedWithWrappedCancellationException(g);
485 >    class FailingBiConsumer extends CheckedIntegerAction
486 >        implements BiConsumer<Integer, Integer>
487 >    {
488 >        FailingBiConsumer(ExecutionMode m) { super(m); }
489 >        public void accept(Integer x, Integer y) {
490 >            invoked();
491 >            value = subtract(x, y);
492 >            throw new CFException();
493 >        }
494      }
495  
496 <
497 <    /**
498 <     * thenCombine result completes normally after normal completion of sources
499 <     */
500 <    public void testThenCombine() {
501 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
502 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
503 <        CompletableFuture<Integer> g = f.thenCombine(f2, add);
504 <        f.complete(one);
636 <        checkIncomplete(g);
637 <        f2.complete(two);
638 <        checkCompletedNormally(g, three);
639 <
640 <        f = new CompletableFuture<Integer>();
641 <        f.complete(one);
642 <        f2 = new CompletableFuture<Integer>();
643 <        g = f.thenCombine(f2, add);
644 <        checkIncomplete(g);
645 <        f2.complete(two);
646 <        checkCompletedNormally(g, three);
496 >    class FailingFunction extends CheckedIntegerAction
497 >        implements Function<Integer, Integer>
498 >    {
499 >        FailingFunction(ExecutionMode m) { super(m); }
500 >        public Integer apply(Integer x) {
501 >            invoked();
502 >            value = x;
503 >            throw new CFException();
504 >        }
505      }
506  
507 <    /**
508 <     * thenCombine result completes exceptionally after exceptional
509 <     * completion of either source
510 <     */
511 <    public void testThenCombine2() {
512 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
513 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
514 <        CompletableFuture<Integer> g = f.thenCombine(f2, add);
515 <        f.completeExceptionally(new CFException());
658 <        f2.complete(two);
659 <        checkCompletedWithWrappedCFException(g);
660 <
661 <        f = new CompletableFuture<Integer>();
662 <        f.complete(one);
663 <        f2 = new CompletableFuture<Integer>();
664 <        g = f.thenCombine(f2, add);
665 <        f2.completeExceptionally(new CFException());
666 <        checkCompletedWithWrappedCFException(g);
507 >    class FailingBiFunction extends CheckedIntegerAction
508 >        implements BiFunction<Integer, Integer, Integer>
509 >    {
510 >        FailingBiFunction(ExecutionMode m) { super(m); }
511 >        public Integer apply(Integer x, Integer y) {
512 >            invoked();
513 >            value = subtract(x, y);
514 >            throw new CFException();
515 >        }
516      }
517  
518 <    /**
519 <     * thenCombine result completes exceptionally if action does
520 <     */
521 <    public void testThenCombine3() {
522 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
523 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
675 <        FailingBiFunction r = new FailingBiFunction();
676 <        CompletableFuture<Integer> g = f.thenCombine(f2, r);
677 <        f.complete(one);
678 <        checkIncomplete(g);
679 <        f2.complete(two);
680 <        checkCompletedWithWrappedCFException(g);
518 >    class FailingRunnable extends CheckedAction implements Runnable {
519 >        FailingRunnable(ExecutionMode m) { super(m); }
520 >        public void run() {
521 >            invoked();
522 >            throw new CFException();
523 >        }
524      }
525  
683    /**
684     * thenCombine result completes exceptionally if either source cancelled
685     */
686    public void testThenCombine4() {
687        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
688        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
689        CompletableFuture<Integer> g = f.thenCombine(f2, add);
690        assertTrue(f.cancel(true));
691        f2.complete(two);
692        checkCompletedWithWrappedCancellationException(g);
693        f = new CompletableFuture<Integer>();
694        f2 = new CompletableFuture<Integer>();
695        g = f.thenCombine(f2, add);
696        f.complete(one);
697        assertTrue(f2.cancel(true));
698        checkCompletedWithWrappedCancellationException(g);
699    }
526  
527 <    /**
528 <     * thenAcceptBoth result completes normally after normal
529 <     * completion of sources
530 <     */
531 <    public void testThenAcceptBoth() {
532 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
533 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
534 <        AddAction r = new AddAction();
535 <        CompletableFuture<Void> g = f.thenAcceptBoth(f2, r);
536 <        f.complete(one);
537 <        checkIncomplete(g);
712 <        f2.complete(two);
713 <        checkCompletedNormally(g, null);
714 <        assertEquals(r.value, 3);
715 <
716 <        r = new AddAction();
717 <        f = new CompletableFuture<Integer>();
718 <        f.complete(one);
719 <        f2 = new CompletableFuture<Integer>();
720 <        g = f.thenAcceptBoth(f2, r);
721 <        checkIncomplete(g);
722 <        f2.complete(two);
723 <        checkCompletedNormally(g, null);
724 <        assertEquals(r.value, 3);
527 >    class CompletableFutureInc extends CheckedIntegerAction
528 >        implements Function<Integer, CompletableFuture<Integer>>
529 >    {
530 >        CompletableFutureInc(ExecutionMode m) { super(m); }
531 >        public CompletableFuture<Integer> apply(Integer x) {
532 >            invoked();
533 >            value = x;
534 >            CompletableFuture<Integer> f = new CompletableFuture<>();
535 >            f.complete(inc(x));
536 >            return f;
537 >        }
538      }
539  
540 <    /**
541 <     * thenAcceptBoth result completes exceptionally after exceptional
542 <     * completion of either source
543 <     */
544 <    public void testThenAcceptBoth2() {
545 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
546 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
547 <        AddAction r = new AddAction();
548 <        CompletableFuture<Void> g = f.thenAcceptBoth(f2, r);
736 <        f.completeExceptionally(new CFException());
737 <        f2.complete(two);
738 <        checkCompletedWithWrappedCFException(g);
739 <
740 <        r = new AddAction();
741 <        f = new CompletableFuture<Integer>();
742 <        f.complete(one);
743 <        f2 = new CompletableFuture<Integer>();
744 <        g = f.thenAcceptBoth(f2, r);
745 <        f2.completeExceptionally(new CFException());
746 <        checkCompletedWithWrappedCFException(g);
540 >    class FailingCompletableFutureFunction extends CheckedIntegerAction
541 >        implements Function<Integer, CompletableFuture<Integer>>
542 >    {
543 >        FailingCompletableFutureFunction(ExecutionMode m) { super(m); }
544 >        public CompletableFuture<Integer> apply(Integer x) {
545 >            invoked();
546 >            value = x;
547 >            throw new CFException();
548 >        }
549      }
550  
551 <    /**
552 <     * thenAcceptBoth result completes exceptionally if action does
553 <     */
554 <    public void testThenAcceptBoth3() {
555 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
556 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
557 <        FailingBiConsumer r = new FailingBiConsumer();
756 <        CompletableFuture<Void> g = f.thenAcceptBoth(f2, r);
757 <        f.complete(one);
758 <        checkIncomplete(g);
759 <        f2.complete(two);
760 <        checkCompletedWithWrappedCFException(g);
761 <    }
551 >    // Used for explicit executor tests
552 >    static final class ThreadExecutor implements Executor {
553 >        final AtomicInteger count = new AtomicInteger(0);
554 >        static final ThreadGroup tg = new ThreadGroup("ThreadExecutor");
555 >        static boolean startedCurrentThread() {
556 >            return Thread.currentThread().getThreadGroup() == tg;
557 >        }
558  
559 <    /**
560 <     * thenAcceptBoth result completes exceptionally if either source cancelled
561 <     */
562 <    public void testThenAcceptBoth4() {
767 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
768 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
769 <        AddAction r = new AddAction();
770 <        CompletableFuture<Void> g = f.thenAcceptBoth(f2, r);
771 <        assertTrue(f.cancel(true));
772 <        f2.complete(two);
773 <        checkCompletedWithWrappedCancellationException(g);
774 <        f = new CompletableFuture<Integer>();
775 <        f2 = new CompletableFuture<Integer>();
776 <        r = new AddAction();
777 <        g = f.thenAcceptBoth(f2, r);
778 <        f.complete(one);
779 <        assertTrue(f2.cancel(true));
780 <        checkCompletedWithWrappedCancellationException(g);
559 >        public void execute(Runnable r) {
560 >            count.getAndIncrement();
561 >            new Thread(tg, r).start();
562 >        }
563      }
564  
565      /**
566 <     * runAfterBoth result completes normally after normal
567 <     * completion of sources
566 >     * Permits the testing of parallel code for the 3 different
567 >     * execution modes without copy/pasting all the test methods.
568       */
569 <    public void testRunAfterBoth() {
570 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
571 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
572 <        Noop r = new Noop();
573 <        CompletableFuture<Void> g = f.runAfterBoth(f2, r);
574 <        f.complete(one);
575 <        checkIncomplete(g);
576 <        f2.complete(two);
577 <        checkCompletedNormally(g, null);
578 <        assertTrue(r.ran);
569 >    enum ExecutionMode {
570 >        DEFAULT {
571 >            public void checkExecutionMode() {
572 >                assertFalse(ThreadExecutor.startedCurrentThread());
573 >                assertNull(ForkJoinTask.getPool());
574 >            }
575 >            public CompletableFuture<Void> runAsync(Runnable a) {
576 >                throw new UnsupportedOperationException();
577 >            }
578 >            public <U> CompletableFuture<U> supplyAsync(Supplier<U> a) {
579 >                throw new UnsupportedOperationException();
580 >            }
581 >            public <T> CompletableFuture<Void> thenRun
582 >                (CompletableFuture<T> f, Runnable a) {
583 >                return f.thenRun(a);
584 >            }
585 >            public <T> CompletableFuture<Void> thenAccept
586 >                (CompletableFuture<T> f, Consumer<? super T> a) {
587 >                return f.thenAccept(a);
588 >            }
589 >            public <T,U> CompletableFuture<U> thenApply
590 >                (CompletableFuture<T> f, Function<? super T,U> a) {
591 >                return f.thenApply(a);
592 >            }
593 >            public <T,U> CompletableFuture<U> thenCompose
594 >                (CompletableFuture<T> f,
595 >                 Function<? super T,? extends CompletionStage<U>> a) {
596 >                return f.thenCompose(a);
597 >            }
598 >            public <T,U> CompletableFuture<U> handle
599 >                (CompletableFuture<T> f,
600 >                 BiFunction<? super T,Throwable,? extends U> a) {
601 >                return f.handle(a);
602 >            }
603 >            public <T> CompletableFuture<T> whenComplete
604 >                (CompletableFuture<T> f,
605 >                 BiConsumer<? super T,? super Throwable> a) {
606 >                return f.whenComplete(a);
607 >            }
608 >            public <T,U> CompletableFuture<Void> runAfterBoth
609 >                (CompletableFuture<T> f, CompletableFuture<U> g, Runnable a) {
610 >                return f.runAfterBoth(g, a);
611 >            }
612 >            public <T,U> CompletableFuture<Void> thenAcceptBoth
613 >                (CompletableFuture<T> f,
614 >                 CompletionStage<? extends U> g,
615 >                 BiConsumer<? super T,? super U> a) {
616 >                return f.thenAcceptBoth(g, a);
617 >            }
618 >            public <T,U,V> CompletableFuture<V> thenCombine
619 >                (CompletableFuture<T> f,
620 >                 CompletionStage<? extends U> g,
621 >                 BiFunction<? super T,? super U,? extends V> a) {
622 >                return f.thenCombine(g, a);
623 >            }
624 >            public <T> CompletableFuture<Void> runAfterEither
625 >                (CompletableFuture<T> f,
626 >                 CompletionStage<?> g,
627 >                 java.lang.Runnable a) {
628 >                return f.runAfterEither(g, a);
629 >            }
630 >            public <T> CompletableFuture<Void> acceptEither
631 >                (CompletableFuture<T> f,
632 >                 CompletionStage<? extends T> g,
633 >                 Consumer<? super T> a) {
634 >                return f.acceptEither(g, a);
635 >            }
636 >            public <T,U> CompletableFuture<U> applyToEither
637 >                (CompletableFuture<T> f,
638 >                 CompletionStage<? extends T> g,
639 >                 Function<? super T,U> a) {
640 >                return f.applyToEither(g, a);
641 >            }
642 >        },
643  
644 <        r = new Noop();
645 <        f = new CompletableFuture<Integer>();
646 <        f.complete(one);
647 <        f2 = new CompletableFuture<Integer>();
648 <        g = f.runAfterBoth(f2, r);
649 <        checkIncomplete(g);
650 <        f2.complete(two);
651 <        checkCompletedNormally(g, null);
652 <        assertTrue(r.ran);
653 <    }
644 >        ASYNC {
645 >            public void checkExecutionMode() {
646 >                assertSame(ForkJoinPool.commonPool(),
647 >                           ForkJoinTask.getPool());
648 >            }
649 >            public CompletableFuture<Void> runAsync(Runnable a) {
650 >                return CompletableFuture.runAsync(a);
651 >            }
652 >            public <U> CompletableFuture<U> supplyAsync(Supplier<U> a) {
653 >                return CompletableFuture.supplyAsync(a);
654 >            }
655 >            public <T> CompletableFuture<Void> thenRun
656 >                (CompletableFuture<T> f, Runnable a) {
657 >                return f.thenRunAsync(a);
658 >            }
659 >            public <T> CompletableFuture<Void> thenAccept
660 >                (CompletableFuture<T> f, Consumer<? super T> a) {
661 >                return f.thenAcceptAsync(a);
662 >            }
663 >            public <T,U> CompletableFuture<U> thenApply
664 >                (CompletableFuture<T> f, Function<? super T,U> a) {
665 >                return f.thenApplyAsync(a);
666 >            }
667 >            public <T,U> CompletableFuture<U> thenCompose
668 >                (CompletableFuture<T> f,
669 >                 Function<? super T,? extends CompletionStage<U>> a) {
670 >                return f.thenComposeAsync(a);
671 >            }
672 >            public <T,U> CompletableFuture<U> handle
673 >                (CompletableFuture<T> f,
674 >                 BiFunction<? super T,Throwable,? extends U> a) {
675 >                return f.handleAsync(a);
676 >            }
677 >            public <T> CompletableFuture<T> whenComplete
678 >                (CompletableFuture<T> f,
679 >                 BiConsumer<? super T,? super Throwable> a) {
680 >                return f.whenCompleteAsync(a);
681 >            }
682 >            public <T,U> CompletableFuture<Void> runAfterBoth
683 >                (CompletableFuture<T> f, CompletableFuture<U> g, Runnable a) {
684 >                return f.runAfterBothAsync(g, a);
685 >            }
686 >            public <T,U> CompletableFuture<Void> thenAcceptBoth
687 >                (CompletableFuture<T> f,
688 >                 CompletionStage<? extends U> g,
689 >                 BiConsumer<? super T,? super U> a) {
690 >                return f.thenAcceptBothAsync(g, a);
691 >            }
692 >            public <T,U,V> CompletableFuture<V> thenCombine
693 >                (CompletableFuture<T> f,
694 >                 CompletionStage<? extends U> g,
695 >                 BiFunction<? super T,? super U,? extends V> a) {
696 >                return f.thenCombineAsync(g, a);
697 >            }
698 >            public <T> CompletableFuture<Void> runAfterEither
699 >                (CompletableFuture<T> f,
700 >                 CompletionStage<?> g,
701 >                 java.lang.Runnable a) {
702 >                return f.runAfterEitherAsync(g, a);
703 >            }
704 >            public <T> CompletableFuture<Void> acceptEither
705 >                (CompletableFuture<T> f,
706 >                 CompletionStage<? extends T> g,
707 >                 Consumer<? super T> a) {
708 >                return f.acceptEitherAsync(g, a);
709 >            }
710 >            public <T,U> CompletableFuture<U> applyToEither
711 >                (CompletableFuture<T> f,
712 >                 CompletionStage<? extends T> g,
713 >                 Function<? super T,U> a) {
714 >                return f.applyToEitherAsync(g, a);
715 >            }
716 >        },
717  
718 <    /**
719 <     * runAfterBoth result completes exceptionally after exceptional
720 <     * completion of either source
721 <     */
722 <    public void testRunAfterBoth2() {
723 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
724 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
725 <        Noop r = new Noop();
726 <        CompletableFuture<Void> g = f.runAfterBoth(f2, r);
727 <        f.completeExceptionally(new CFException());
728 <        f2.complete(two);
729 <        checkCompletedWithWrappedCFException(g);
718 >        EXECUTOR {
719 >            public void checkExecutionMode() {
720 >                assertTrue(ThreadExecutor.startedCurrentThread());
721 >            }
722 >            public CompletableFuture<Void> runAsync(Runnable a) {
723 >                return CompletableFuture.runAsync(a, new ThreadExecutor());
724 >            }
725 >            public <U> CompletableFuture<U> supplyAsync(Supplier<U> a) {
726 >                return CompletableFuture.supplyAsync(a, new ThreadExecutor());
727 >            }
728 >            public <T> CompletableFuture<Void> thenRun
729 >                (CompletableFuture<T> f, Runnable a) {
730 >                return f.thenRunAsync(a, new ThreadExecutor());
731 >            }
732 >            public <T> CompletableFuture<Void> thenAccept
733 >                (CompletableFuture<T> f, Consumer<? super T> a) {
734 >                return f.thenAcceptAsync(a, new ThreadExecutor());
735 >            }
736 >            public <T,U> CompletableFuture<U> thenApply
737 >                (CompletableFuture<T> f, Function<? super T,U> a) {
738 >                return f.thenApplyAsync(a, new ThreadExecutor());
739 >            }
740 >            public <T,U> CompletableFuture<U> thenCompose
741 >                (CompletableFuture<T> f,
742 >                 Function<? super T,? extends CompletionStage<U>> a) {
743 >                return f.thenComposeAsync(a, new ThreadExecutor());
744 >            }
745 >            public <T,U> CompletableFuture<U> handle
746 >                (CompletableFuture<T> f,
747 >                 BiFunction<? super T,Throwable,? extends U> a) {
748 >                return f.handleAsync(a, new ThreadExecutor());
749 >            }
750 >            public <T> CompletableFuture<T> whenComplete
751 >                (CompletableFuture<T> f,
752 >                 BiConsumer<? super T,? super Throwable> a) {
753 >                return f.whenCompleteAsync(a, new ThreadExecutor());
754 >            }
755 >            public <T,U> CompletableFuture<Void> runAfterBoth
756 >                (CompletableFuture<T> f, CompletableFuture<U> g, Runnable a) {
757 >                return f.runAfterBothAsync(g, a, new ThreadExecutor());
758 >            }
759 >            public <T,U> CompletableFuture<Void> thenAcceptBoth
760 >                (CompletableFuture<T> f,
761 >                 CompletionStage<? extends U> g,
762 >                 BiConsumer<? super T,? super U> a) {
763 >                return f.thenAcceptBothAsync(g, a, new ThreadExecutor());
764 >            }
765 >            public <T,U,V> CompletableFuture<V> thenCombine
766 >                (CompletableFuture<T> f,
767 >                 CompletionStage<? extends U> g,
768 >                 BiFunction<? super T,? super U,? extends V> a) {
769 >                return f.thenCombineAsync(g, a, new ThreadExecutor());
770 >            }
771 >            public <T> CompletableFuture<Void> runAfterEither
772 >                (CompletableFuture<T> f,
773 >                 CompletionStage<?> g,
774 >                 java.lang.Runnable a) {
775 >                return f.runAfterEitherAsync(g, a, new ThreadExecutor());
776 >            }
777 >            public <T> CompletableFuture<Void> acceptEither
778 >                (CompletableFuture<T> f,
779 >                 CompletionStage<? extends T> g,
780 >                 Consumer<? super T> a) {
781 >                return f.acceptEitherAsync(g, a, new ThreadExecutor());
782 >            }
783 >            public <T,U> CompletableFuture<U> applyToEither
784 >                (CompletableFuture<T> f,
785 >                 CompletionStage<? extends T> g,
786 >                 Function<? super T,U> a) {
787 >                return f.applyToEitherAsync(g, a, new ThreadExecutor());
788 >            }
789 >        };
790  
791 <        r = new Noop();
792 <        f = new CompletableFuture<Integer>();
793 <        f.complete(one);
794 <        f2 = new CompletableFuture<Integer>();
795 <        g = f.runAfterBoth(f2, r);
796 <        f2.completeExceptionally(new CFException());
797 <        checkCompletedWithWrappedCFException(g);
798 <    }
791 >        public abstract void checkExecutionMode();
792 >        public abstract CompletableFuture<Void> runAsync(Runnable a);
793 >        public abstract <U> CompletableFuture<U> supplyAsync(Supplier<U> a);
794 >        public abstract <T> CompletableFuture<Void> thenRun
795 >            (CompletableFuture<T> f, Runnable a);
796 >        public abstract <T> CompletableFuture<Void> thenAccept
797 >            (CompletableFuture<T> f, Consumer<? super T> a);
798 >        public abstract <T,U> CompletableFuture<U> thenApply
799 >            (CompletableFuture<T> f, Function<? super T,U> a);
800 >        public abstract <T,U> CompletableFuture<U> thenCompose
801 >            (CompletableFuture<T> f,
802 >             Function<? super T,? extends CompletionStage<U>> a);
803 >        public abstract <T,U> CompletableFuture<U> handle
804 >            (CompletableFuture<T> f,
805 >             BiFunction<? super T,Throwable,? extends U> a);
806 >        public abstract <T> CompletableFuture<T> whenComplete
807 >            (CompletableFuture<T> f,
808 >             BiConsumer<? super T,? super Throwable> a);
809 >        public abstract <T,U> CompletableFuture<Void> runAfterBoth
810 >            (CompletableFuture<T> f, CompletableFuture<U> g, Runnable a);
811 >        public abstract <T,U> CompletableFuture<Void> thenAcceptBoth
812 >            (CompletableFuture<T> f,
813 >             CompletionStage<? extends U> g,
814 >             BiConsumer<? super T,? super U> a);
815 >        public abstract <T,U,V> CompletableFuture<V> thenCombine
816 >            (CompletableFuture<T> f,
817 >             CompletionStage<? extends U> g,
818 >             BiFunction<? super T,? super U,? extends V> a);
819 >        public abstract <T> CompletableFuture<Void> runAfterEither
820 >            (CompletableFuture<T> f,
821 >             CompletionStage<?> g,
822 >             java.lang.Runnable a);
823 >        public abstract <T> CompletableFuture<Void> acceptEither
824 >            (CompletableFuture<T> f,
825 >             CompletionStage<? extends T> g,
826 >             Consumer<? super T> a);
827 >        public abstract <T,U> CompletableFuture<U> applyToEither
828 >            (CompletableFuture<T> f,
829 >             CompletionStage<? extends T> g,
830 >             Function<? super T,U> a);
831 >    }
832 >
833 >    /**
834 >     * exceptionally action is not invoked when source completes
835 >     * normally, and source result is propagated
836 >     */
837 >    public void testExceptionally_normalCompletion() {
838 >        for (boolean createIncomplete : new boolean[] { true, false })
839 >        for (Integer v1 : new Integer[] { 1, null })
840 >    {
841 >        final AtomicInteger a = new AtomicInteger(0);
842 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
843 >        if (!createIncomplete) f.complete(v1);
844 >        final CompletableFuture<Integer> g = f.exceptionally
845 >            ((Throwable t) -> {
846 >                // Should not be called
847 >                a.getAndIncrement();
848 >                throw new AssertionError();
849 >            });
850 >        if (createIncomplete) f.complete(v1);
851 >
852 >        checkCompletedNormally(g, v1);
853 >        checkCompletedNormally(f, v1);
854 >        assertEquals(0, a.get());
855 >    }}
856  
857      /**
858 <     * runAfterBoth result completes exceptionally if action does
858 >     * exceptionally action completes with function value on source
859 >     * exception
860       */
861 <    public void testRunAfterBoth3() {
862 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
863 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
864 <        FailingNoop r = new FailingNoop();
865 <        CompletableFuture<Void> g = f.runAfterBoth(f2, r);
866 <        f.complete(one);
867 <        checkIncomplete(g);
868 <        f2.complete(two);
869 <        checkCompletedWithWrappedCFException(g);
870 <    }
861 >    public void testExceptionally_exceptionalCompletion() {
862 >        for (boolean createIncomplete : new boolean[] { true, false })
863 >        for (Integer v1 : new Integer[] { 1, null })
864 >    {
865 >        final AtomicInteger a = new AtomicInteger(0);
866 >        final CFException ex = new CFException();
867 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
868 >        if (!createIncomplete) f.completeExceptionally(ex);
869 >        final CompletableFuture<Integer> g = f.exceptionally
870 >            ((Throwable t) -> {
871 >                ExecutionMode.DEFAULT.checkExecutionMode();
872 >                threadAssertSame(t, ex);
873 >                a.getAndIncrement();
874 >                return v1;
875 >            });
876 >        if (createIncomplete) f.completeExceptionally(ex);
877 >
878 >        checkCompletedNormally(g, v1);
879 >        assertEquals(1, a.get());
880 >    }}
881 >
882 >    public void testExceptionally_exceptionalCompletionActionFailed() {
883 >        for (boolean createIncomplete : new boolean[] { true, false })
884 >        for (Integer v1 : new Integer[] { 1, null })
885 >    {
886 >        final AtomicInteger a = new AtomicInteger(0);
887 >        final CFException ex1 = new CFException();
888 >        final CFException ex2 = new CFException();
889 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
890 >        if (!createIncomplete) f.completeExceptionally(ex1);
891 >        final CompletableFuture<Integer> g = f.exceptionally
892 >            ((Throwable t) -> {
893 >                ExecutionMode.DEFAULT.checkExecutionMode();
894 >                threadAssertSame(t, ex1);
895 >                a.getAndIncrement();
896 >                throw ex2;
897 >            });
898 >        if (createIncomplete) f.completeExceptionally(ex1);
899 >
900 >        checkCompletedWithWrappedException(g, ex2);
901 >        assertEquals(1, a.get());
902 >    }}
903 >
904 >    /**
905 >     * whenComplete action executes on normal completion, propagating
906 >     * source result.
907 >     */
908 >    public void testWhenComplete_normalCompletion1() {
909 >        for (ExecutionMode m : ExecutionMode.values())
910 >        for (boolean createIncomplete : new boolean[] { true, false })
911 >        for (Integer v1 : new Integer[] { 1, null })
912 >    {
913 >        final AtomicInteger a = new AtomicInteger(0);
914 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
915 >        if (!createIncomplete) f.complete(v1);
916 >        final CompletableFuture<Integer> g = m.whenComplete
917 >            (f,
918 >             (Integer x, Throwable t) -> {
919 >                m.checkExecutionMode();
920 >                threadAssertSame(x, v1);
921 >                threadAssertNull(t);
922 >                a.getAndIncrement();
923 >            });
924 >        if (createIncomplete) f.complete(v1);
925 >
926 >        checkCompletedNormally(g, v1);
927 >        checkCompletedNormally(f, v1);
928 >        assertEquals(1, a.get());
929 >    }}
930 >
931 >    /**
932 >     * whenComplete action executes on exceptional completion, propagating
933 >     * source result.
934 >     */
935 >    public void testWhenComplete_exceptionalCompletion() {
936 >        for (ExecutionMode m : ExecutionMode.values())
937 >        for (boolean createIncomplete : new boolean[] { true, false })
938 >        for (Integer v1 : new Integer[] { 1, null })
939 >    {
940 >        final AtomicInteger a = new AtomicInteger(0);
941 >        final CFException ex = new CFException();
942 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
943 >        if (!createIncomplete) f.completeExceptionally(ex);
944 >        final CompletableFuture<Integer> g = m.whenComplete
945 >            (f,
946 >             (Integer x, Throwable t) -> {
947 >                m.checkExecutionMode();
948 >                threadAssertNull(x);
949 >                threadAssertSame(t, ex);
950 >                a.getAndIncrement();
951 >            });
952 >        if (createIncomplete) f.completeExceptionally(ex);
953 >
954 >        checkCompletedWithWrappedException(g, ex);
955 >        checkCompletedExceptionally(f, ex);
956 >        assertEquals(1, a.get());
957 >    }}
958 >
959 >    /**
960 >     * whenComplete action executes on cancelled source, propagating
961 >     * CancellationException.
962 >     */
963 >    public void testWhenComplete_sourceCancelled() {
964 >        for (ExecutionMode m : ExecutionMode.values())
965 >        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
966 >        for (boolean createIncomplete : new boolean[] { true, false })
967 >    {
968 >        final AtomicInteger a = new AtomicInteger(0);
969 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
970 >        if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
971 >        final CompletableFuture<Integer> g = m.whenComplete
972 >            (f,
973 >             (Integer x, Throwable t) -> {
974 >                m.checkExecutionMode();
975 >                threadAssertNull(x);
976 >                threadAssertTrue(t instanceof CancellationException);
977 >                a.getAndIncrement();
978 >            });
979 >        if (createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
980  
845    /**
846     * runAfterBoth result completes exceptionally if either source cancelled
847     */
848    public void testRunAfterBoth4() {
849        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
850        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
851        Noop r = new Noop();
852        CompletableFuture<Void> g = f.runAfterBoth(f2, r);
853        assertTrue(f.cancel(true));
854        f2.complete(two);
855        checkCompletedWithWrappedCancellationException(g);
856        f = new CompletableFuture<Integer>();
857        f2 = new CompletableFuture<Integer>();
858        r = new Noop();
859        g = f.runAfterBoth(f2, r);
860        f.complete(one);
861        assertTrue(f2.cancel(true));
981          checkCompletedWithWrappedCancellationException(g);
982 <    }
982 >        checkCancelled(f);
983 >        assertEquals(1, a.get());
984 >    }}
985  
986      /**
987 <     * applyToEither result completes normally after normal completion
988 <     * of either source
987 >     * If a whenComplete action throws an exception when triggered by
988 >     * a normal completion, it completes exceptionally
989       */
990 <    public void testApplyToEither() {
991 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
992 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
993 <        CompletableFuture<Integer> g = f.applyToEither(f2, inc);
994 <        f.complete(one);
995 <        checkCompletedNormally(g, two);
996 <        f2.complete(one);
997 <        checkCompletedNormally(g, two);
998 <
999 <        f = new CompletableFuture<Integer>();
1000 <        f.complete(one);
1001 <        f2 = new CompletableFuture<Integer>();
1002 <        g = f.applyToEither(f2, inc);
1003 <        checkCompletedNormally(g, two);
1004 <    }
990 >    public void testWhenComplete_actionFailed() {
991 >        for (boolean createIncomplete : new boolean[] { true, false })
992 >        for (ExecutionMode m : ExecutionMode.values())
993 >        for (Integer v1 : new Integer[] { 1, null })
994 >    {
995 >        final AtomicInteger a = new AtomicInteger(0);
996 >        final CFException ex = new CFException();
997 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
998 >        if (!createIncomplete) f.complete(v1);
999 >        final CompletableFuture<Integer> g = m.whenComplete
1000 >            (f,
1001 >             (Integer x, Throwable t) -> {
1002 >                m.checkExecutionMode();
1003 >                threadAssertSame(x, v1);
1004 >                threadAssertNull(t);
1005 >                a.getAndIncrement();
1006 >                throw ex;
1007 >            });
1008 >        if (createIncomplete) f.complete(v1);
1009 >
1010 >        checkCompletedWithWrappedException(g, ex);
1011 >        checkCompletedNormally(f, v1);
1012 >        assertEquals(1, a.get());
1013 >    }}
1014 >
1015 >    /**
1016 >     * If a whenComplete action throws an exception when triggered by
1017 >     * a source completion that also throws an exception, the source
1018 >     * exception takes precedence.
1019 >     */
1020 >    public void testWhenComplete_actionFailedSourceFailed() {
1021 >        for (boolean createIncomplete : new boolean[] { true, false })
1022 >        for (ExecutionMode m : ExecutionMode.values())
1023 >        for (Integer v1 : new Integer[] { 1, null })
1024 >    {
1025 >        final AtomicInteger a = new AtomicInteger(0);
1026 >        final CFException ex1 = new CFException();
1027 >        final CFException ex2 = new CFException();
1028 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1029 >
1030 >        if (!createIncomplete) f.completeExceptionally(ex1);
1031 >        final CompletableFuture<Integer> g = m.whenComplete
1032 >            (f,
1033 >             (Integer x, Throwable t) -> {
1034 >                m.checkExecutionMode();
1035 >                threadAssertSame(t, ex1);
1036 >                threadAssertNull(x);
1037 >                a.getAndIncrement();
1038 >                throw ex2;
1039 >            });
1040 >        if (createIncomplete) f.completeExceptionally(ex1);
1041 >
1042 >        checkCompletedWithWrappedException(g, ex1);
1043 >        checkCompletedExceptionally(f, ex1);
1044 >        assertEquals(1, a.get());
1045 >    }}
1046 >
1047 >    /**
1048 >     * handle action completes normally with function value on normal
1049 >     * completion of source
1050 >     */
1051 >    public void testHandle_normalCompletion() {
1052 >        for (ExecutionMode m : ExecutionMode.values())
1053 >        for (boolean createIncomplete : new boolean[] { true, false })
1054 >        for (Integer v1 : new Integer[] { 1, null })
1055 >    {
1056 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1057 >        final AtomicInteger a = new AtomicInteger(0);
1058 >        if (!createIncomplete) f.complete(v1);
1059 >        final CompletableFuture<Integer> g = m.handle
1060 >            (f,
1061 >             (Integer x, Throwable t) -> {
1062 >                m.checkExecutionMode();
1063 >                threadAssertSame(x, v1);
1064 >                threadAssertNull(t);
1065 >                a.getAndIncrement();
1066 >                return inc(v1);
1067 >            });
1068 >        if (createIncomplete) f.complete(v1);
1069 >
1070 >        checkCompletedNormally(g, inc(v1));
1071 >        checkCompletedNormally(f, v1);
1072 >        assertEquals(1, a.get());
1073 >    }}
1074  
1075      /**
1076 <     * applyToEither result completes exceptionally after exceptional
1077 <     * completion of either source
1076 >     * handle action completes normally with function value on
1077 >     * exceptional completion of source
1078       */
1079 <    public void testApplyToEither2() {
1080 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1081 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1082 <        CompletableFuture<Integer> g = f.applyToEither(f2, inc);
1083 <        f.completeExceptionally(new CFException());
1084 <        f2.complete(one);
1085 <        checkCompletedWithWrappedCFException(g);
1079 >    public void testHandle_exceptionalCompletion() {
1080 >        for (ExecutionMode m : ExecutionMode.values())
1081 >        for (boolean createIncomplete : new boolean[] { true, false })
1082 >        for (Integer v1 : new Integer[] { 1, null })
1083 >    {
1084 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1085 >        final AtomicInteger a = new AtomicInteger(0);
1086 >        final CFException ex = new CFException();
1087 >        if (!createIncomplete) f.completeExceptionally(ex);
1088 >        final CompletableFuture<Integer> g = m.handle
1089 >            (f,
1090 >             (Integer x, Throwable t) -> {
1091 >                m.checkExecutionMode();
1092 >                threadAssertNull(x);
1093 >                threadAssertSame(t, ex);
1094 >                a.getAndIncrement();
1095 >                return v1;
1096 >            });
1097 >        if (createIncomplete) f.completeExceptionally(ex);
1098 >
1099 >        checkCompletedNormally(g, v1);
1100 >        checkCompletedExceptionally(f, ex);
1101 >        assertEquals(1, a.get());
1102 >    }}
1103 >
1104 >    /**
1105 >     * handle action completes normally with function value on
1106 >     * cancelled source
1107 >     */
1108 >    public void testHandle_sourceCancelled() {
1109 >        for (ExecutionMode m : ExecutionMode.values())
1110 >        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1111 >        for (boolean createIncomplete : new boolean[] { true, false })
1112 >        for (Integer v1 : new Integer[] { 1, null })
1113 >    {
1114 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1115 >        final AtomicInteger a = new AtomicInteger(0);
1116 >        if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
1117 >        final CompletableFuture<Integer> g = m.handle
1118 >            (f,
1119 >             (Integer x, Throwable t) -> {
1120 >                m.checkExecutionMode();
1121 >                threadAssertNull(x);
1122 >                threadAssertTrue(t instanceof CancellationException);
1123 >                a.getAndIncrement();
1124 >                return v1;
1125 >            });
1126 >        if (createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
1127  
1128 <        f = new CompletableFuture<Integer>();
1129 <        f2 = new CompletableFuture<Integer>();
1130 <        f2.completeExceptionally(new CFException());
1131 <        g = f.applyToEither(f2, inc);
901 <        checkCompletedWithWrappedCFException(g);
902 <    }
903 <
904 <    /**
905 <     * applyToEither result completes exceptionally if action does
906 <     */
907 <    public void testApplyToEither3() {
908 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
909 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
910 <        FailingFunction r = new FailingFunction();
911 <        CompletableFuture<Integer> g = f.applyToEither(f2, r);
912 <        f2.complete(two);
913 <        checkCompletedWithWrappedCFException(g);
914 <    }
1128 >        checkCompletedNormally(g, v1);
1129 >        checkCancelled(f);
1130 >        assertEquals(1, a.get());
1131 >    }}
1132  
1133      /**
1134 <     * applyToEither result completes exceptionally if either source cancelled
1134 >     * handle result completes exceptionally if action does
1135       */
1136 <    public void testApplyToEither4() {
1137 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1138 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1139 <        CompletableFuture<Integer> g = f.applyToEither(f2, inc);
1140 <        assertTrue(f.cancel(true));
1141 <        checkCompletedWithWrappedCancellationException(g);
1142 <        f = new CompletableFuture<Integer>();
1143 <        f2 = new CompletableFuture<Integer>();
1144 <        assertTrue(f2.cancel(true));
1145 <        checkCompletedWithWrappedCancellationException(g);
1146 <    }
1136 >    public void testHandle_sourceFailedActionFailed() {
1137 >        for (ExecutionMode m : ExecutionMode.values())
1138 >        for (boolean createIncomplete : new boolean[] { true, false })
1139 >    {
1140 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1141 >        final AtomicInteger a = new AtomicInteger(0);
1142 >        final CFException ex1 = new CFException();
1143 >        final CFException ex2 = new CFException();
1144 >        if (!createIncomplete) f.completeExceptionally(ex1);
1145 >        final CompletableFuture<Integer> g = m.handle
1146 >            (f,
1147 >             (Integer x, Throwable t) -> {
1148 >                m.checkExecutionMode();
1149 >                threadAssertNull(x);
1150 >                threadAssertSame(ex1, t);
1151 >                a.getAndIncrement();
1152 >                throw ex2;
1153 >            });
1154 >        if (createIncomplete) f.completeExceptionally(ex1);
1155 >
1156 >        checkCompletedWithWrappedException(g, ex2);
1157 >        checkCompletedExceptionally(f, ex1);
1158 >        assertEquals(1, a.get());
1159 >    }}
1160 >
1161 >    public void testHandle_sourceCompletedNormallyActionFailed() {
1162 >        for (ExecutionMode m : ExecutionMode.values())
1163 >        for (boolean createIncomplete : new boolean[] { true, false })
1164 >        for (Integer v1 : new Integer[] { 1, null })
1165 >    {
1166 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1167 >        final AtomicInteger a = new AtomicInteger(0);
1168 >        final CFException ex = new CFException();
1169 >        if (!createIncomplete) f.complete(v1);
1170 >        final CompletableFuture<Integer> g = m.handle
1171 >            (f,
1172 >             (Integer x, Throwable t) -> {
1173 >                m.checkExecutionMode();
1174 >                threadAssertSame(x, v1);
1175 >                threadAssertNull(t);
1176 >                a.getAndIncrement();
1177 >                throw ex;
1178 >            });
1179 >        if (createIncomplete) f.complete(v1);
1180 >
1181 >        checkCompletedWithWrappedException(g, ex);
1182 >        checkCompletedNormally(f, v1);
1183 >        assertEquals(1, a.get());
1184 >    }}
1185  
1186      /**
1187 <     * acceptEither result completes normally after normal completion
933 <     * of either source
1187 >     * runAsync completes after running Runnable
1188       */
1189 <    public void testAcceptEither() {
1190 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1191 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1192 <        IncAction r = new IncAction();
1193 <        CompletableFuture<Void> g = f.acceptEither(f2, r);
1194 <        f.complete(one);
1195 <        checkCompletedNormally(g, null);
1196 <        f2.complete(one);
1197 <        checkCompletedNormally(g, null);
1198 <        assertEquals(r.value, 2);
1199 <
1200 <        r = new IncAction();
1201 <        f = new CompletableFuture<Integer>();
948 <        f.complete(one);
949 <        f2 = new CompletableFuture<Integer>();
950 <        g = f.acceptEither(f2, r);
951 <        checkCompletedNormally(g, null);
952 <        assertEquals(r.value, 2);
953 <    }
1189 >    public void testRunAsync_normalCompletion() {
1190 >        ExecutionMode[] executionModes = {
1191 >            ExecutionMode.ASYNC,
1192 >            ExecutionMode.EXECUTOR,
1193 >        };
1194 >        for (ExecutionMode m : executionModes)
1195 >    {
1196 >        final Noop r = new Noop(m);
1197 >        final CompletableFuture<Void> f = m.runAsync(r);
1198 >        assertNull(f.join());
1199 >        checkCompletedNormally(f, null);
1200 >        r.assertInvoked();
1201 >    }}
1202  
1203      /**
1204 <     * acceptEither result completes exceptionally after exceptional
957 <     * completion of either source
1204 >     * failing runAsync completes exceptionally after running Runnable
1205       */
1206 <    public void testAcceptEither2() {
1207 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1208 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1209 <        IncAction r = new IncAction();
1210 <        CompletableFuture<Void> g = f.acceptEither(f2, r);
1211 <        f.completeExceptionally(new CFException());
1212 <        f2.complete(one);
1213 <        checkCompletedWithWrappedCFException(g);
1214 <
1215 <        r = new IncAction();
1216 <        f = new CompletableFuture<Integer>();
1217 <        f2 = new CompletableFuture<Integer>();
971 <        f2.completeExceptionally(new CFException());
972 <        g = f.acceptEither(f2, r);
973 <        checkCompletedWithWrappedCFException(g);
974 <    }
1206 >    public void testRunAsync_exceptionalCompletion() {
1207 >        ExecutionMode[] executionModes = {
1208 >            ExecutionMode.ASYNC,
1209 >            ExecutionMode.EXECUTOR,
1210 >        };
1211 >        for (ExecutionMode m : executionModes)
1212 >    {
1213 >        final FailingRunnable r = new FailingRunnable(m);
1214 >        final CompletableFuture<Void> f = m.runAsync(r);
1215 >        checkCompletedWithWrappedCFException(f);
1216 >        r.assertInvoked();
1217 >    }}
1218  
1219      /**
1220 <     * acceptEither result completes exceptionally if action does
1220 >     * supplyAsync completes with result of supplier
1221       */
1222 <    public void testAcceptEither3() {
1223 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1224 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1225 <        FailingConsumer r = new FailingConsumer();
1226 <        CompletableFuture<Void> g = f.acceptEither(f2, r);
1227 <        f2.complete(two);
1228 <        checkCompletedWithWrappedCFException(g);
1229 <    }
1222 >    public void testSupplyAsync_normalCompletion() {
1223 >        ExecutionMode[] executionModes = {
1224 >            ExecutionMode.ASYNC,
1225 >            ExecutionMode.EXECUTOR,
1226 >        };
1227 >        for (ExecutionMode m : executionModes)
1228 >        for (Integer v1 : new Integer[] { 1, null })
1229 >    {
1230 >        final IntegerSupplier r = new IntegerSupplier(m, v1);
1231 >        final CompletableFuture<Integer> f = m.supplyAsync(r);
1232 >        assertSame(v1, f.join());
1233 >        checkCompletedNormally(f, v1);
1234 >        r.assertInvoked();
1235 >    }}
1236  
1237      /**
1238 <     * acceptEither result completes exceptionally if either source cancelled
1238 >     * Failing supplyAsync completes exceptionally
1239       */
1240 <    public void testAcceptEither4() {
1241 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1242 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1243 <        IncAction r = new IncAction();
1244 <        CompletableFuture<Void> g = f.acceptEither(f2, r);
1245 <        assertTrue(f.cancel(true));
1246 <        checkCompletedWithWrappedCancellationException(g);
1247 <        f = new CompletableFuture<Integer>();
1248 <        f2 = new CompletableFuture<Integer>();
1249 <        assertTrue(f2.cancel(true));
1250 <        checkCompletedWithWrappedCancellationException(g);
1251 <    }
1240 >    public void testSupplyAsync_exceptionalCompletion() {
1241 >        ExecutionMode[] executionModes = {
1242 >            ExecutionMode.ASYNC,
1243 >            ExecutionMode.EXECUTOR,
1244 >        };
1245 >        for (ExecutionMode m : executionModes)
1246 >    {
1247 >        FailingSupplier r = new FailingSupplier(m);
1248 >        CompletableFuture<Integer> f = m.supplyAsync(r);
1249 >        checkCompletedWithWrappedCFException(f);
1250 >        r.assertInvoked();
1251 >    }}
1252  
1253 +    // seq completion methods
1254  
1255      /**
1256 <     * runAfterEither result completes normally after normal completion
1007 <     * of either source
1256 >     * thenRun result completes normally after normal completion of source
1257       */
1258 <    public void testRunAfterEither() {
1259 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1260 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1261 <        Noop r = new Noop();
1262 <        CompletableFuture<Void> g = f.runAfterEither(f2, r);
1263 <        f.complete(one);
1264 <        checkCompletedNormally(g, null);
1265 <        f2.complete(one);
1266 <        checkCompletedNormally(g, null);
1267 <        assertTrue(r.ran);
1258 >    public void testThenRun_normalCompletion() {
1259 >        for (ExecutionMode m : ExecutionMode.values())
1260 >        for (boolean createIncomplete : new boolean[] { true, false })
1261 >        for (Integer v1 : new Integer[] { 1, null })
1262 >    {
1263 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1264 >        final Noop r = new Noop(m);
1265 >        if (!createIncomplete) f.complete(v1);
1266 >        final CompletableFuture<Void> g = m.thenRun(f, r);
1267 >        if (createIncomplete) {
1268 >            checkIncomplete(g);
1269 >            f.complete(v1);
1270 >        }
1271  
1020        r = new Noop();
1021        f = new CompletableFuture<Integer>();
1022        f.complete(one);
1023        f2 = new CompletableFuture<Integer>();
1024        g = f.runAfterEither(f2, r);
1272          checkCompletedNormally(g, null);
1273 <        assertTrue(r.ran);
1274 <    }
1275 <
1029 <    /**
1030 <     * runAfterEither result completes exceptionally after exceptional
1031 <     * completion of either source
1032 <     */
1033 <    public void testRunAfterEither2() {
1034 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1035 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1036 <        Noop r = new Noop();
1037 <        CompletableFuture<Void> g = f.runAfterEither(f2, r);
1038 <        f.completeExceptionally(new CFException());
1039 <        f2.complete(one);
1040 <        checkCompletedWithWrappedCFException(g);
1041 <
1042 <        r = new Noop();
1043 <        f = new CompletableFuture<Integer>();
1044 <        f2 = new CompletableFuture<Integer>();
1045 <        f2.completeExceptionally(new CFException());
1046 <        g = f.runAfterEither(f2, r);
1047 <        checkCompletedWithWrappedCFException(g);
1048 <    }
1273 >        checkCompletedNormally(f, v1);
1274 >        r.assertInvoked();
1275 >    }}
1276  
1277      /**
1278 <     * runAfterEither result completes exceptionally if action does
1052 <     */
1053 <    public void testRunAfterEither3() {
1054 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1055 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1056 <        FailingNoop r = new FailingNoop();
1057 <        CompletableFuture<Void> g = f.runAfterEither(f2, r);
1058 <        f2.complete(two);
1059 <        checkCompletedWithWrappedCFException(g);
1060 <    }
1061 <
1062 <    /**
1063 <     * runAfterEither result completes exceptionally if either source cancelled
1064 <     */
1065 <    public void testRunAfterEither4() {
1066 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1067 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1068 <        Noop r = new Noop();
1069 <        CompletableFuture<Void> g = f.runAfterEither(f2, r);
1070 <        assertTrue(f.cancel(true));
1071 <        checkCompletedWithWrappedCancellationException(g);
1072 <        f = new CompletableFuture<Integer>();
1073 <        f2 = new CompletableFuture<Integer>();
1074 <        assertTrue(f2.cancel(true));
1075 <        checkCompletedWithWrappedCancellationException(g);
1076 <    }
1077 <
1078 <    /**
1079 <     * thenCompose result completes normally after normal completion of source
1080 <     */
1081 <    public void testThenCompose() {
1082 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1083 <        CompletableFutureInc r = new CompletableFutureInc();
1084 <        CompletableFuture<Integer> g = f.thenCompose(r);
1085 <        f.complete(one);
1086 <        checkCompletedNormally(g, two);
1087 <    }
1088 <
1089 <    /**
1090 <     * thenCompose result completes exceptionally after exceptional
1278 >     * thenRun result completes exceptionally after exceptional
1279       * completion of source
1280       */
1281 <    public void testThenCompose2() {
1282 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1283 <        CompletableFutureInc r = new CompletableFutureInc();
1284 <        CompletableFuture<Integer> g = f.thenCompose(r);
1285 <        f.completeExceptionally(new CFException());
1286 <        checkCompletedWithWrappedCFException(g);
1287 <    }
1288 <
1289 <    /**
1290 <     * thenCompose result completes exceptionally if action does
1291 <     */
1292 <    public void testThenCompose3() {
1293 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1106 <        FailingCompletableFutureFunction r = new FailingCompletableFutureFunction();
1107 <        CompletableFuture<Integer> g = f.thenCompose(r);
1108 <        f.complete(one);
1109 <        checkCompletedWithWrappedCFException(g);
1110 <    }
1111 <
1112 <    /**
1113 <     * thenCompose result completes exceptionally if source cancelled
1114 <     */
1115 <    public void testThenCompose4() {
1116 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1117 <        CompletableFutureInc r = new CompletableFutureInc();
1118 <        CompletableFuture<Integer> g = f.thenCompose(r);
1119 <        assertTrue(f.cancel(true));
1120 <        checkCompletedWithWrappedCancellationException(g);
1121 <    }
1122 <
1123 <
1124 <    // asyncs
1125 <
1126 <    /**
1127 <     * thenRunAsync result completes normally after normal completion of source
1128 <     */
1129 <    public void testThenRunAsync() {
1130 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1131 <        Noop r = new Noop();
1132 <        CompletableFuture<Void> g = f.thenRunAsync(r);
1133 <        f.complete(null);
1134 <        checkCompletedNormally(g, null);
1281 >    public void testThenRun_exceptionalCompletion() {
1282 >        for (ExecutionMode m : ExecutionMode.values())
1283 >        for (boolean createIncomplete : new boolean[] { true, false })
1284 >    {
1285 >        final CFException ex = new CFException();
1286 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1287 >        final Noop r = new Noop(m);
1288 >        if (!createIncomplete) f.completeExceptionally(ex);
1289 >        final CompletableFuture<Void> g = m.thenRun(f, r);
1290 >        if (createIncomplete) {
1291 >            checkIncomplete(g);
1292 >            f.completeExceptionally(ex);
1293 >        }
1294  
1295 <        // reordered version
1296 <        f = new CompletableFuture<Integer>();
1297 <        f.complete(null);
1298 <        r = new Noop();
1140 <        g = f.thenRunAsync(r);
1141 <        checkCompletedNormally(g, null);
1142 <    }
1295 >        checkCompletedWithWrappedException(g, ex);
1296 >        checkCompletedExceptionally(f, ex);
1297 >        r.assertNotInvoked();
1298 >    }}
1299  
1300      /**
1301 <     * thenRunAsync result completes exceptionally after exceptional
1146 <     * completion of source
1301 >     * thenRun result completes exceptionally if source cancelled
1302       */
1303 <    public void testThenRunAsync2() {
1304 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1305 <        Noop r = new Noop();
1306 <        CompletableFuture<Void> g = f.thenRunAsync(r);
1307 <        f.completeExceptionally(new CFException());
1308 <        try {
1309 <            g.join();
1310 <            shouldThrow();
1311 <        } catch (Exception ok) {
1303 >    public void testThenRun_sourceCancelled() {
1304 >        for (ExecutionMode m : ExecutionMode.values())
1305 >        for (boolean createIncomplete : new boolean[] { true, false })
1306 >        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1307 >    {
1308 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1309 >        final Noop r = new Noop(m);
1310 >        if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
1311 >        final CompletableFuture<Void> g = m.thenRun(f, r);
1312 >        if (createIncomplete) {
1313 >            checkIncomplete(g);
1314 >            assertTrue(f.cancel(mayInterruptIfRunning));
1315          }
1158        checkCompletedWithWrappedCFException(g);
1159    }
1160
1161    /**
1162     * thenRunAsync result completes exceptionally if action does
1163     */
1164    public void testThenRunAsync3() {
1165        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1166        FailingNoop r = new FailingNoop();
1167        CompletableFuture<Void> g = f.thenRunAsync(r);
1168        f.complete(null);
1169        checkCompletedWithWrappedCFException(g);
1170    }
1316  
1172    /**
1173     * thenRunAsync result completes exceptionally if source cancelled
1174     */
1175    public void testThenRunAsync4() {
1176        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1177        Noop r = new Noop();
1178        CompletableFuture<Void> g = f.thenRunAsync(r);
1179        assertTrue(f.cancel(true));
1317          checkCompletedWithWrappedCancellationException(g);
1318 <    }
1318 >        checkCancelled(f);
1319 >        r.assertNotInvoked();
1320 >    }}
1321  
1322      /**
1323 <     * thenApplyAsync result completes normally after normal completion of source
1323 >     * thenRun result completes exceptionally if action does
1324       */
1325 <    public void testThenApplyAsync() {
1326 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1327 <        CompletableFuture<Integer> g = f.thenApplyAsync(inc);
1328 <        f.complete(one);
1329 <        checkCompletedNormally(g, two);
1330 <    }
1325 >    public void testThenRun_actionFailed() {
1326 >        for (ExecutionMode m : ExecutionMode.values())
1327 >        for (boolean createIncomplete : new boolean[] { true, false })
1328 >        for (Integer v1 : new Integer[] { 1, null })
1329 >    {
1330 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1331 >        final FailingRunnable r = new FailingRunnable(m);
1332 >        if (!createIncomplete) f.complete(v1);
1333 >        final CompletableFuture<Void> g = m.thenRun(f, r);
1334 >        if (createIncomplete) {
1335 >            checkIncomplete(g);
1336 >            f.complete(v1);
1337 >        }
1338  
1193    /**
1194     * thenApplyAsync result completes exceptionally after exceptional
1195     * completion of source
1196     */
1197    public void testThenApplyAsync2() {
1198        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1199        CompletableFuture<Integer> g = f.thenApplyAsync(inc);
1200        f.completeExceptionally(new CFException());
1339          checkCompletedWithWrappedCFException(g);
1340 <    }
1340 >        checkCompletedNormally(f, v1);
1341 >    }}
1342  
1343      /**
1344 <     * thenApplyAsync result completes exceptionally if action does
1344 >     * thenApply result completes normally after normal completion of source
1345       */
1346 <    public void testThenApplyAsync3() {
1347 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1348 <        FailingFunction r = new FailingFunction();
1349 <        CompletableFuture<Integer> g = f.thenApplyAsync(r);
1350 <        f.complete(null);
1351 <        checkCompletedWithWrappedCFException(g);
1352 <    }
1346 >    public void testThenApply_normalCompletion() {
1347 >        for (ExecutionMode m : ExecutionMode.values())
1348 >        for (boolean createIncomplete : new boolean[] { true, false })
1349 >        for (Integer v1 : new Integer[] { 1, null })
1350 >    {
1351 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1352 >        final IncFunction r = new IncFunction(m);
1353 >        if (!createIncomplete) f.complete(v1);
1354 >        final CompletableFuture<Integer> g = m.thenApply(f, r);
1355 >        if (createIncomplete) {
1356 >            checkIncomplete(g);
1357 >            f.complete(v1);
1358 >        }
1359  
1360 <    /**
1361 <     * thenApplyAsync result completes exceptionally if source cancelled
1362 <     */
1363 <    public void testThenApplyAsync4() {
1219 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1220 <        CompletableFuture<Integer> g = f.thenApplyAsync(inc);
1221 <        assertTrue(f.cancel(true));
1222 <        checkCompletedWithWrappedCancellationException(g);
1223 <    }
1360 >        checkCompletedNormally(g, inc(v1));
1361 >        checkCompletedNormally(f, v1);
1362 >        r.assertValue(inc(v1));
1363 >    }}
1364  
1365      /**
1366 <     * thenAcceptAsync result completes normally after normal
1366 >     * thenApply result completes exceptionally after exceptional
1367       * completion of source
1368       */
1369 <    public void testThenAcceptAsync() {
1370 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1371 <        IncAction r = new IncAction();
1372 <        CompletableFuture<Void> g = f.thenAcceptAsync(r);
1373 <        f.complete(one);
1374 <        checkCompletedNormally(g, null);
1375 <        assertEquals(r.value, 2);
1376 <    }
1369 >    public void testThenApply_exceptionalCompletion() {
1370 >        for (ExecutionMode m : ExecutionMode.values())
1371 >        for (boolean createIncomplete : new boolean[] { true, false })
1372 >    {
1373 >        final CFException ex = new CFException();
1374 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1375 >        final IncFunction r = new IncFunction(m);
1376 >        if (!createIncomplete) f.completeExceptionally(ex);
1377 >        final CompletableFuture<Integer> g = m.thenApply(f, r);
1378 >        if (createIncomplete) {
1379 >            checkIncomplete(g);
1380 >            f.completeExceptionally(ex);
1381 >        }
1382  
1383 <    /**
1384 <     * thenAcceptAsync result completes exceptionally after exceptional
1385 <     * completion of source
1386 <     */
1242 <    public void testThenAcceptAsync2() {
1243 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1244 <        IncAction r = new IncAction();
1245 <        CompletableFuture<Void> g = f.thenAcceptAsync(r);
1246 <        f.completeExceptionally(new CFException());
1247 <        checkCompletedWithWrappedCFException(g);
1248 <    }
1383 >        checkCompletedWithWrappedException(g, ex);
1384 >        checkCompletedExceptionally(f, ex);
1385 >        r.assertNotInvoked();
1386 >    }}
1387  
1388      /**
1389 <     * thenAcceptAsync result completes exceptionally if action does
1389 >     * thenApply result completes exceptionally if source cancelled
1390       */
1391 <    public void testThenAcceptAsync3() {
1392 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1393 <        FailingConsumer r = new FailingConsumer();
1394 <        CompletableFuture<Void> g = f.thenAcceptAsync(r);
1395 <        f.complete(null);
1396 <        checkCompletedWithWrappedCFException(g);
1397 <    }
1391 >    public void testThenApply_sourceCancelled() {
1392 >        for (ExecutionMode m : ExecutionMode.values())
1393 >        for (boolean createIncomplete : new boolean[] { true, false })
1394 >        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1395 >    {
1396 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1397 >        final IncFunction r = new IncFunction(m);
1398 >        if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
1399 >        final CompletableFuture<Integer> g = m.thenApply(f, r);
1400 >        if (createIncomplete) {
1401 >            checkIncomplete(g);
1402 >            assertTrue(f.cancel(mayInterruptIfRunning));
1403 >        }
1404  
1261    /**
1262     * thenAcceptAsync result completes exceptionally if source cancelled
1263     */
1264    public void testThenAcceptAsync4() {
1265        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1266        IncAction r = new IncAction();
1267        CompletableFuture<Void> g = f.thenAcceptAsync(r);
1268        assertTrue(f.cancel(true));
1405          checkCompletedWithWrappedCancellationException(g);
1406 <    }
1407 <    /**
1408 <     * thenCombineAsync result completes normally after normal
1273 <     * completion of sources
1274 <     */
1275 <    public void testThenCombineAsync() {
1276 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1277 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1278 <        CompletableFuture<Integer> g = f.thenCombineAsync(f2, add);
1279 <        f.complete(one);
1280 <        checkIncomplete(g);
1281 <        f2.complete(two);
1282 <        checkCompletedNormally(g, three);
1283 <    }
1406 >        checkCancelled(f);
1407 >        r.assertNotInvoked();
1408 >    }}
1409  
1410      /**
1411 <     * thenCombineAsync result completes exceptionally after exceptional
1287 <     * completion of source
1411 >     * thenApply result completes exceptionally if action does
1412       */
1413 <    public void testThenCombineAsync2() {
1414 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1415 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1416 <        CompletableFuture<Integer> g = f.thenCombineAsync(f2, add);
1417 <        f.completeExceptionally(new CFException());
1418 <        f2.complete(two);
1419 <        checkCompletedWithWrappedCFException(g);
1420 <
1421 <        f = new CompletableFuture<Integer>();
1422 <        f2 = new CompletableFuture<Integer>();
1423 <        g = f.thenCombineAsync(f2, add);
1424 <        f.complete(one);
1425 <        f2.completeExceptionally(new CFException());
1302 <        checkCompletedWithWrappedCFException(g);
1303 <    }
1413 >    public void testThenApply_actionFailed() {
1414 >        for (ExecutionMode m : ExecutionMode.values())
1415 >        for (boolean createIncomplete : new boolean[] { true, false })
1416 >        for (Integer v1 : new Integer[] { 1, null })
1417 >    {
1418 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1419 >        final FailingFunction r = new FailingFunction(m);
1420 >        if (!createIncomplete) f.complete(v1);
1421 >        final CompletableFuture<Integer> g = m.thenApply(f, r);
1422 >        if (createIncomplete) {
1423 >            checkIncomplete(g);
1424 >            f.complete(v1);
1425 >        }
1426  
1305    /**
1306     * thenCombineAsync result completes exceptionally if action does
1307     */
1308    public void testThenCombineAsync3() {
1309        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1310        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1311        FailingBiFunction r = new FailingBiFunction();
1312        CompletableFuture<Integer> g = f.thenCombineAsync(f2, r);
1313        f.complete(one);
1314        checkIncomplete(g);
1315        f2.complete(two);
1427          checkCompletedWithWrappedCFException(g);
1428 <    }
1428 >        checkCompletedNormally(f, v1);
1429 >    }}
1430  
1431      /**
1432 <     * thenCombineAsync result completes exceptionally if either source cancelled
1432 >     * thenAccept result completes normally after normal completion of source
1433       */
1434 <    public void testThenCombineAsync4() {
1435 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1436 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1437 <        CompletableFuture<Integer> g = f.thenCombineAsync(f2, add);
1438 <        assertTrue(f.cancel(true));
1439 <        f2.complete(two);
1440 <        checkCompletedWithWrappedCancellationException(g);
1441 <
1442 <        f = new CompletableFuture<Integer>();
1443 <        f2 = new CompletableFuture<Integer>();
1444 <        g = f.thenCombineAsync(f2, add);
1445 <        f.complete(one);
1446 <        assertTrue(f2.cancel(true));
1335 <        checkCompletedWithWrappedCancellationException(g);
1336 <    }
1434 >    public void testThenAccept_normalCompletion() {
1435 >        for (ExecutionMode m : ExecutionMode.values())
1436 >        for (boolean createIncomplete : new boolean[] { true, false })
1437 >        for (Integer v1 : new Integer[] { 1, null })
1438 >    {
1439 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1440 >        final NoopConsumer r = new NoopConsumer(m);
1441 >        if (!createIncomplete) f.complete(v1);
1442 >        final CompletableFuture<Void> g = m.thenAccept(f, r);
1443 >        if (createIncomplete) {
1444 >            checkIncomplete(g);
1445 >            f.complete(v1);
1446 >        }
1447  
1338    /**
1339     * thenAcceptBothAsync result completes normally after normal
1340     * completion of sources
1341     */
1342    public void testThenAcceptBothAsync() {
1343        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1344        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1345        AddAction r = new AddAction();
1346        CompletableFuture<Void> g = f.thenAcceptBothAsync(f2, r);
1347        f.complete(one);
1348        checkIncomplete(g);
1349        f2.complete(two);
1448          checkCompletedNormally(g, null);
1449 <        assertEquals(r.value, 3);
1450 <    }
1449 >        r.assertValue(v1);
1450 >        checkCompletedNormally(f, v1);
1451 >    }}
1452  
1453      /**
1454 <     * thenAcceptBothAsync result completes exceptionally after exceptional
1454 >     * thenAccept result completes exceptionally after exceptional
1455       * completion of source
1456       */
1457 <    public void testThenAcceptBothAsync2() {
1458 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1459 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1460 <        AddAction r = new AddAction();
1461 <        CompletableFuture<Void> g = f.thenAcceptBothAsync(f2, r);
1462 <        f.completeExceptionally(new CFException());
1463 <        f2.complete(two);
1464 <        checkCompletedWithWrappedCFException(g);
1465 <
1466 <        r = new AddAction();
1467 <        f = new CompletableFuture<Integer>();
1468 <        f2 = new CompletableFuture<Integer>();
1469 <        g = f.thenAcceptBothAsync(f2, r);
1371 <        f.complete(one);
1372 <        f2.completeExceptionally(new CFException());
1373 <        checkCompletedWithWrappedCFException(g);
1374 <    }
1457 >    public void testThenAccept_exceptionalCompletion() {
1458 >        for (ExecutionMode m : ExecutionMode.values())
1459 >        for (boolean createIncomplete : new boolean[] { true, false })
1460 >    {
1461 >        final CFException ex = new CFException();
1462 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1463 >        final NoopConsumer r = new NoopConsumer(m);
1464 >        if (!createIncomplete) f.completeExceptionally(ex);
1465 >        final CompletableFuture<Void> g = m.thenAccept(f, r);
1466 >        if (createIncomplete) {
1467 >            checkIncomplete(g);
1468 >            f.completeExceptionally(ex);
1469 >        }
1470  
1471 <    /**
1472 <     * thenAcceptBothAsync result completes exceptionally if action does
1473 <     */
1474 <    public void testThenAcceptBothAsync3() {
1380 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1381 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1382 <        FailingBiConsumer r = new FailingBiConsumer();
1383 <        CompletableFuture<Void> g = f.thenAcceptBothAsync(f2, r);
1384 <        f.complete(one);
1385 <        checkIncomplete(g);
1386 <        f2.complete(two);
1387 <        checkCompletedWithWrappedCFException(g);
1388 <    }
1471 >        checkCompletedWithWrappedException(g, ex);
1472 >        checkCompletedExceptionally(f, ex);
1473 >        r.assertNotInvoked();
1474 >    }}
1475  
1476      /**
1477 <     * thenAcceptBothAsync result completes exceptionally if either source cancelled
1477 >     * thenAccept result completes exceptionally if source cancelled
1478       */
1479 <    public void testThenAcceptBothAsync4() {
1480 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1481 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1482 <        AddAction r = new AddAction();
1483 <        CompletableFuture<Void> g = f.thenAcceptBothAsync(f2, r);
1484 <        assertTrue(f.cancel(true));
1485 <        f2.complete(two);
1486 <        checkCompletedWithWrappedCancellationException(g);
1479 >    public void testThenAccept_sourceCancelled() {
1480 >        for (ExecutionMode m : ExecutionMode.values())
1481 >        for (boolean createIncomplete : new boolean[] { true, false })
1482 >        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1483 >    {
1484 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1485 >        final NoopConsumer r = new NoopConsumer(m);
1486 >        if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
1487 >        final CompletableFuture<Void> g = m.thenAccept(f, r);
1488 >        if (createIncomplete) {
1489 >            checkIncomplete(g);
1490 >            assertTrue(f.cancel(mayInterruptIfRunning));
1491 >        }
1492  
1402        r = new AddAction();
1403        f = new CompletableFuture<Integer>();
1404        f2 = new CompletableFuture<Integer>();
1405        g = f.thenAcceptBothAsync(f2, r);
1406        f.complete(one);
1407        assertTrue(f2.cancel(true));
1493          checkCompletedWithWrappedCancellationException(g);
1494 <    }
1495 <
1496 <    /**
1412 <     * runAfterBothAsync result completes normally after normal
1413 <     * completion of sources
1414 <     */
1415 <    public void testRunAfterBothAsync() {
1416 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1417 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1418 <        Noop r = new Noop();
1419 <        CompletableFuture<Void> g = f.runAfterBothAsync(f2, r);
1420 <        f.complete(one);
1421 <        checkIncomplete(g);
1422 <        f2.complete(two);
1423 <        checkCompletedNormally(g, null);
1424 <        assertTrue(r.ran);
1425 <    }
1494 >        checkCancelled(f);
1495 >        r.assertNotInvoked();
1496 >    }}
1497  
1498      /**
1499 <     * runAfterBothAsync result completes exceptionally after exceptional
1429 <     * completion of source
1499 >     * thenAccept result completes exceptionally if action does
1500       */
1501 <    public void testRunAfterBothAsync2() {
1502 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1503 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1504 <        Noop r = new Noop();
1505 <        CompletableFuture<Void> g = f.runAfterBothAsync(f2, r);
1506 <        f.completeExceptionally(new CFException());
1507 <        f2.complete(two);
1508 <        checkCompletedWithWrappedCFException(g);
1501 >    public void testThenAccept_actionFailed() {
1502 >        for (ExecutionMode m : ExecutionMode.values())
1503 >        for (boolean createIncomplete : new boolean[] { true, false })
1504 >        for (Integer v1 : new Integer[] { 1, null })
1505 >    {
1506 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1507 >        final FailingConsumer r = new FailingConsumer(m);
1508 >        if (!createIncomplete) f.complete(v1);
1509 >        final CompletableFuture<Void> g = m.thenAccept(f, r);
1510 >        if (createIncomplete) {
1511 >            checkIncomplete(g);
1512 >            f.complete(v1);
1513 >        }
1514  
1440        r = new Noop();
1441        f = new CompletableFuture<Integer>();
1442        f2 = new CompletableFuture<Integer>();
1443        g = f.runAfterBothAsync(f2, r);
1444        f.complete(one);
1445        f2.completeExceptionally(new CFException());
1515          checkCompletedWithWrappedCFException(g);
1516 <    }
1517 <
1449 <    /**
1450 <     * runAfterBothAsync result completes exceptionally if action does
1451 <     */
1452 <    public void testRunAfterBothAsync3() {
1453 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1454 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1455 <        FailingNoop r = new FailingNoop();
1456 <        CompletableFuture<Void> g = f.runAfterBothAsync(f2, r);
1457 <        f.complete(one);
1458 <        checkIncomplete(g);
1459 <        f2.complete(two);
1460 <        checkCompletedWithWrappedCFException(g);
1461 <    }
1516 >        checkCompletedNormally(f, v1);
1517 >    }}
1518  
1519      /**
1520 <     * runAfterBothAsync result completes exceptionally if either source cancelled
1520 >     * thenCombine result completes normally after normal completion
1521 >     * of sources
1522       */
1523 <    public void testRunAfterBothAsync4() {
1524 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1525 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1526 <        Noop r = new Noop();
1527 <        CompletableFuture<Void> g = f.runAfterBothAsync(f2, r);
1528 <        assertTrue(f.cancel(true));
1529 <        f2.complete(two);
1530 <        checkCompletedWithWrappedCancellationException(g);
1523 >    public void testThenCombine_normalCompletion() {
1524 >        for (ExecutionMode m : ExecutionMode.values())
1525 >        for (boolean createIncomplete : new boolean[] { true, false })
1526 >        for (boolean fFirst : new boolean[] { true, false })
1527 >        for (Integer v1 : new Integer[] { 1, null })
1528 >        for (Integer v2 : new Integer[] { 2, null })
1529 >    {
1530 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1531 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
1532 >        final SubtractFunction r = new SubtractFunction(m);
1533 >
1534 >        if (fFirst) f.complete(v1); else g.complete(v2);
1535 >        if (!createIncomplete)
1536 >            if (!fFirst) f.complete(v1); else g.complete(v2);
1537 >        final CompletableFuture<Integer> h = m.thenCombine(f, g, r);
1538 >        if (createIncomplete) {
1539 >            checkIncomplete(h);
1540 >            r.assertNotInvoked();
1541 >            if (!fFirst) f.complete(v1); else g.complete(v2);
1542 >        }
1543  
1544 <        r = new Noop();
1545 <        f = new CompletableFuture<Integer>();
1546 <        f2 = new CompletableFuture<Integer>();
1547 <        g = f.runAfterBothAsync(f2, r);
1548 <        f.complete(one);
1480 <        assertTrue(f2.cancel(true));
1481 <        checkCompletedWithWrappedCancellationException(g);
1482 <    }
1544 >        checkCompletedNormally(h, subtract(v1, v2));
1545 >        checkCompletedNormally(f, v1);
1546 >        checkCompletedNormally(g, v2);
1547 >        r.assertValue(subtract(v1, v2));
1548 >    }}
1549  
1550      /**
1551 <     * applyToEitherAsync result completes normally after normal
1552 <     * completion of sources
1551 >     * thenCombine result completes exceptionally after exceptional
1552 >     * completion of either source
1553       */
1554 <    public void testApplyToEitherAsync() {
1555 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1556 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1557 <        CompletableFuture<Integer> g = f.applyToEitherAsync(f2, inc);
1558 <        f.complete(one);
1559 <        checkCompletedNormally(g, two);
1554 >    public void testThenCombine_exceptionalCompletion() {
1555 >        for (ExecutionMode m : ExecutionMode.values())
1556 >        for (boolean createIncomplete : new boolean[] { true, false })
1557 >        for (boolean fFirst : new boolean[] { true, false })
1558 >        for (Integer v1 : new Integer[] { 1, null })
1559 >    {
1560 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1561 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
1562 >        final CFException ex = new CFException();
1563 >        final SubtractFunction r = new SubtractFunction(m);
1564 >
1565 >        (fFirst ? f : g).complete(v1);
1566 >        if (!createIncomplete)
1567 >            (!fFirst ? f : g).completeExceptionally(ex);
1568 >        final CompletableFuture<Integer> h = m.thenCombine(f, g, r);
1569 >        if (createIncomplete) {
1570 >            checkIncomplete(h);
1571 >            (!fFirst ? f : g).completeExceptionally(ex);
1572 >        }
1573  
1574 <        f = new CompletableFuture<Integer>();
1575 <        f.complete(one);
1576 <        f2 = new CompletableFuture<Integer>();
1577 <        g = f.applyToEitherAsync(f2, inc);
1578 <        checkCompletedNormally(g, two);
1500 <    }
1574 >        checkCompletedWithWrappedException(h, ex);
1575 >        r.assertNotInvoked();
1576 >        checkCompletedNormally(fFirst ? f : g, v1);
1577 >        checkCompletedExceptionally(!fFirst ? f : g, ex);
1578 >    }}
1579  
1580      /**
1581 <     * applyToEitherAsync result completes exceptionally after exceptional
1504 <     * completion of source
1581 >     * thenCombine result completes exceptionally if either source cancelled
1582       */
1583 <    public void testApplyToEitherAsync2() {
1584 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1585 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1586 <        CompletableFuture<Integer> g = f.applyToEitherAsync(f2, inc);
1587 <        f.completeExceptionally(new CFException());
1588 <        checkCompletedWithWrappedCFException(g);
1589 <
1590 <        f = new CompletableFuture<Integer>();
1591 <        f2 = new CompletableFuture<Integer>();
1592 <        f2.completeExceptionally(new CFException());
1593 <        g = f.applyToEitherAsync(f2, inc);
1594 <        f.complete(one);
1595 <        checkCompletedWithWrappedCFException(g);
1596 <    }
1583 >    public void testThenCombine_sourceCancelled() {
1584 >        for (ExecutionMode m : ExecutionMode.values())
1585 >        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1586 >        for (boolean createIncomplete : new boolean[] { true, false })
1587 >        for (boolean fFirst : new boolean[] { true, false })
1588 >        for (Integer v1 : new Integer[] { 1, null })
1589 >    {
1590 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1591 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
1592 >        final SubtractFunction r = new SubtractFunction(m);
1593 >
1594 >        (fFirst ? f : g).complete(v1);
1595 >        if (!createIncomplete)
1596 >            assertTrue((!fFirst ? f : g).cancel(mayInterruptIfRunning));
1597 >        final CompletableFuture<Integer> h = m.thenCombine(f, g, r);
1598 >        if (createIncomplete) {
1599 >            checkIncomplete(h);
1600 >            assertTrue((!fFirst ? f : g).cancel(mayInterruptIfRunning));
1601 >        }
1602  
1603 <    /**
1604 <     * applyToEitherAsync result completes exceptionally if action does
1605 <     */
1606 <    public void testApplyToEitherAsync3() {
1607 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1526 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1527 <        FailingFunction r = new FailingFunction();
1528 <        CompletableFuture<Integer> g = f.applyToEitherAsync(f2, r);
1529 <        f.complete(one);
1530 <        checkCompletedWithWrappedCFException(g);
1531 <    }
1603 >        checkCompletedWithWrappedCancellationException(h);
1604 >        checkCancelled(!fFirst ? f : g);
1605 >        r.assertNotInvoked();
1606 >        checkCompletedNormally(fFirst ? f : g, v1);
1607 >    }}
1608  
1609      /**
1610 <     * applyToEitherAsync result completes exceptionally if either source cancelled
1610 >     * thenCombine result completes exceptionally if action does
1611       */
1612 <    public void testApplyToEitherAsync4() {
1613 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1614 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1615 <        CompletableFuture<Integer> g = f.applyToEitherAsync(f2, inc);
1616 <        assertTrue(f.cancel(true));
1617 <        checkCompletedWithWrappedCancellationException(g);
1612 >    public void testThenCombine_actionFailed() {
1613 >        for (ExecutionMode m : ExecutionMode.values())
1614 >        for (boolean fFirst : new boolean[] { true, false })
1615 >        for (Integer v1 : new Integer[] { 1, null })
1616 >        for (Integer v2 : new Integer[] { 2, null })
1617 >    {
1618 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1619 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
1620 >        final FailingBiFunction r = new FailingBiFunction(m);
1621 >        final CompletableFuture<Integer> h = m.thenCombine(f, g, r);
1622 >
1623 >        if (fFirst) {
1624 >            f.complete(v1);
1625 >            g.complete(v2);
1626 >        } else {
1627 >            g.complete(v2);
1628 >            f.complete(v1);
1629 >        }
1630  
1631 <        f = new CompletableFuture<Integer>();
1632 <        f2 = new CompletableFuture<Integer>();
1633 <        assertTrue(f2.cancel(true));
1634 <        g = f.applyToEitherAsync(f2, inc);
1547 <        checkCompletedWithWrappedCancellationException(g);
1548 <    }
1631 >        checkCompletedWithWrappedCFException(h);
1632 >        checkCompletedNormally(f, v1);
1633 >        checkCompletedNormally(g, v2);
1634 >    }}
1635  
1636      /**
1637 <     * acceptEitherAsync result completes normally after normal
1637 >     * thenAcceptBoth result completes normally after normal
1638       * completion of sources
1639       */
1640 <    public void testAcceptEitherAsync() {
1641 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1642 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1643 <        IncAction r = new IncAction();
1644 <        CompletableFuture<Void> g = f.acceptEitherAsync(f2, r);
1645 <        f.complete(one);
1646 <        checkCompletedNormally(g, null);
1647 <        assertEquals(r.value, 2);
1640 >    public void testThenAcceptBoth_normalCompletion() {
1641 >        for (ExecutionMode m : ExecutionMode.values())
1642 >        for (boolean createIncomplete : new boolean[] { true, false })
1643 >        for (boolean fFirst : new boolean[] { true, false })
1644 >        for (Integer v1 : new Integer[] { 1, null })
1645 >        for (Integer v2 : new Integer[] { 2, null })
1646 >    {
1647 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1648 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
1649 >        final SubtractAction r = new SubtractAction(m);
1650 >
1651 >        if (fFirst) f.complete(v1); else g.complete(v2);
1652 >        if (!createIncomplete)
1653 >            if (!fFirst) f.complete(v1); else g.complete(v2);
1654 >        final CompletableFuture<Void> h = m.thenAcceptBoth(f, g, r);
1655 >        if (createIncomplete) {
1656 >            checkIncomplete(h);
1657 >            r.assertNotInvoked();
1658 >            if (!fFirst) f.complete(v1); else g.complete(v2);
1659 >        }
1660  
1661 <        r = new IncAction();
1662 <        f = new CompletableFuture<Integer>();
1663 <        f.complete(one);
1664 <        f2 = new CompletableFuture<Integer>();
1665 <        g = f.acceptEitherAsync(f2, r);
1568 <        checkCompletedNormally(g, null);
1569 <        assertEquals(r.value, 2);
1570 <    }
1661 >        checkCompletedNormally(h, null);
1662 >        r.assertValue(subtract(v1, v2));
1663 >        checkCompletedNormally(f, v1);
1664 >        checkCompletedNormally(g, v2);
1665 >    }}
1666  
1667      /**
1668 <     * acceptEitherAsync result completes exceptionally after exceptional
1669 <     * completion of source
1668 >     * thenAcceptBoth result completes exceptionally after exceptional
1669 >     * completion of either source
1670       */
1671 <    public void testAcceptEitherAsync2() {
1672 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1673 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1674 <        IncAction r = new IncAction();
1675 <        CompletableFuture<Void> g = f.acceptEitherAsync(f2, r);
1676 <        f.completeExceptionally(new CFException());
1677 <        checkCompletedWithWrappedCFException(g);
1671 >    public void testThenAcceptBoth_exceptionalCompletion() {
1672 >        for (ExecutionMode m : ExecutionMode.values())
1673 >        for (boolean createIncomplete : new boolean[] { true, false })
1674 >        for (boolean fFirst : new boolean[] { true, false })
1675 >        for (Integer v1 : new Integer[] { 1, null })
1676 >    {
1677 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1678 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
1679 >        final CFException ex = new CFException();
1680 >        final SubtractAction r = new SubtractAction(m);
1681 >
1682 >        (fFirst ? f : g).complete(v1);
1683 >        if (!createIncomplete)
1684 >            (!fFirst ? f : g).completeExceptionally(ex);
1685 >        final CompletableFuture<Void> h = m.thenAcceptBoth(f, g, r);
1686 >        if (createIncomplete) {
1687 >            checkIncomplete(h);
1688 >            (!fFirst ? f : g).completeExceptionally(ex);
1689 >        }
1690  
1691 <        r = new IncAction();
1692 <        f = new CompletableFuture<Integer>();
1693 <        f2 = new CompletableFuture<Integer>();
1694 <        f2.completeExceptionally(new CFException());
1695 <        g = f.acceptEitherAsync(f2, r);
1589 <        f.complete(one);
1590 <        checkCompletedWithWrappedCFException(g);
1591 <    }
1691 >        checkCompletedWithWrappedException(h, ex);
1692 >        r.assertNotInvoked();
1693 >        checkCompletedNormally(fFirst ? f : g, v1);
1694 >        checkCompletedExceptionally(!fFirst ? f : g, ex);
1695 >    }}
1696  
1697      /**
1698 <     * acceptEitherAsync result completes exceptionally if action does
1698 >     * thenAcceptBoth result completes exceptionally if either source cancelled
1699       */
1700 <    public void testAcceptEitherAsync3() {
1701 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1702 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1703 <        FailingConsumer r = new FailingConsumer();
1704 <        CompletableFuture<Void> g = f.acceptEitherAsync(f2, r);
1705 <        f.complete(one);
1706 <        checkCompletedWithWrappedCFException(g);
1707 <    }
1700 >    public void testThenAcceptBoth_sourceCancelled() {
1701 >        for (ExecutionMode m : ExecutionMode.values())
1702 >        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1703 >        for (boolean createIncomplete : new boolean[] { true, false })
1704 >        for (boolean fFirst : new boolean[] { true, false })
1705 >        for (Integer v1 : new Integer[] { 1, null })
1706 >    {
1707 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1708 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
1709 >        final SubtractAction r = new SubtractAction(m);
1710 >
1711 >        (fFirst ? f : g).complete(v1);
1712 >        if (!createIncomplete)
1713 >            assertTrue((!fFirst ? f : g).cancel(mayInterruptIfRunning));
1714 >        final CompletableFuture<Void> h = m.thenAcceptBoth(f, g, r);
1715 >        if (createIncomplete) {
1716 >            checkIncomplete(h);
1717 >            assertTrue((!fFirst ? f : g).cancel(mayInterruptIfRunning));
1718 >        }
1719  
1720 <    /**
1721 <     * acceptEitherAsync result completes exceptionally if either
1722 <     * source cancelled
1723 <     */
1724 <    public void testAcceptEitherAsync4() {
1610 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1611 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1612 <        IncAction r = new IncAction();
1613 <        CompletableFuture<Void> g = f.acceptEitherAsync(f2, r);
1614 <        assertTrue(f.cancel(true));
1615 <        checkCompletedWithWrappedCancellationException(g);
1616 <
1617 <        r = new IncAction();
1618 <        f = new CompletableFuture<Integer>();
1619 <        f2 = new CompletableFuture<Integer>();
1620 <        assertTrue(f2.cancel(true));
1621 <        g = f.acceptEitherAsync(f2, r);
1622 <        checkCompletedWithWrappedCancellationException(g);
1623 <    }
1720 >        checkCompletedWithWrappedCancellationException(h);
1721 >        checkCancelled(!fFirst ? f : g);
1722 >        r.assertNotInvoked();
1723 >        checkCompletedNormally(fFirst ? f : g, v1);
1724 >    }}
1725  
1726      /**
1727 <     * runAfterEitherAsync result completes normally after normal
1627 <     * completion of sources
1727 >     * thenAcceptBoth result completes exceptionally if action does
1728       */
1729 <    public void testRunAfterEitherAsync() {
1730 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1731 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1732 <        Noop r = new Noop();
1733 <        CompletableFuture<Void> g = f.runAfterEitherAsync(f2, r);
1734 <        f.complete(one);
1735 <        checkCompletedNormally(g, null);
1736 <        assertTrue(r.ran);
1729 >    public void testThenAcceptBoth_actionFailed() {
1730 >        for (ExecutionMode m : ExecutionMode.values())
1731 >        for (boolean fFirst : new boolean[] { true, false })
1732 >        for (Integer v1 : new Integer[] { 1, null })
1733 >        for (Integer v2 : new Integer[] { 2, null })
1734 >    {
1735 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1736 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
1737 >        final FailingBiConsumer r = new FailingBiConsumer(m);
1738 >        final CompletableFuture<Void> h = m.thenAcceptBoth(f, g, r);
1739 >
1740 >        if (fFirst) {
1741 >            f.complete(v1);
1742 >            g.complete(v2);
1743 >        } else {
1744 >            g.complete(v2);
1745 >            f.complete(v1);
1746 >        }
1747  
1748 <        r = new Noop();
1749 <        f = new CompletableFuture<Integer>();
1750 <        f.complete(one);
1751 <        f2 = new CompletableFuture<Integer>();
1642 <        g = f.runAfterEitherAsync(f2, r);
1643 <        checkCompletedNormally(g, null);
1644 <        assertTrue(r.ran);
1645 <    }
1748 >        checkCompletedWithWrappedCFException(h);
1749 >        checkCompletedNormally(f, v1);
1750 >        checkCompletedNormally(g, v2);
1751 >    }}
1752  
1753      /**
1754 <     * runAfterEitherAsync result completes exceptionally after exceptional
1755 <     * completion of source
1754 >     * runAfterBoth result completes normally after normal
1755 >     * completion of sources
1756       */
1757 <    public void testRunAfterEitherAsync2() {
1758 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1759 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1760 <        Noop r = new Noop();
1761 <        CompletableFuture<Void> g = f.runAfterEitherAsync(f2, r);
1762 <        f.completeExceptionally(new CFException());
1763 <        checkCompletedWithWrappedCFException(g);
1764 <
1765 <        r = new Noop();
1766 <        f = new CompletableFuture<Integer>();
1767 <        f2 = new CompletableFuture<Integer>();
1768 <        f2.completeExceptionally(new CFException());
1769 <        g = f.runAfterEitherAsync(f2, r);
1770 <        f.complete(one);
1771 <        checkCompletedWithWrappedCFException(g);
1772 <    }
1757 >    public void testRunAfterBoth_normalCompletion() {
1758 >        for (ExecutionMode m : ExecutionMode.values())
1759 >        for (boolean createIncomplete : new boolean[] { true, false })
1760 >        for (boolean fFirst : new boolean[] { true, false })
1761 >        for (Integer v1 : new Integer[] { 1, null })
1762 >        for (Integer v2 : new Integer[] { 2, null })
1763 >    {
1764 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1765 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
1766 >        final Noop r = new Noop(m);
1767 >
1768 >        if (fFirst) f.complete(v1); else g.complete(v2);
1769 >        if (!createIncomplete)
1770 >            if (!fFirst) f.complete(v1); else g.complete(v2);
1771 >        final CompletableFuture<Void> h = m.runAfterBoth(f, g, r);
1772 >        if (createIncomplete) {
1773 >            checkIncomplete(h);
1774 >            r.assertNotInvoked();
1775 >            if (!fFirst) f.complete(v1); else g.complete(v2);
1776 >        }
1777  
1778 <    /**
1779 <     * runAfterEitherAsync result completes exceptionally if action does
1780 <     */
1781 <    public void testRunAfterEitherAsync3() {
1782 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1673 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1674 <        FailingNoop r = new FailingNoop();
1675 <        CompletableFuture<Void> g = f.runAfterEitherAsync(f2, r);
1676 <        f.complete(one);
1677 <        checkCompletedWithWrappedCFException(g);
1678 <    }
1778 >        checkCompletedNormally(h, null);
1779 >        r.assertInvoked();
1780 >        checkCompletedNormally(f, v1);
1781 >        checkCompletedNormally(g, v2);
1782 >    }}
1783  
1784      /**
1785 <     * runAfterEitherAsync result completes exceptionally if either
1786 <     * source cancelled
1785 >     * runAfterBoth result completes exceptionally after exceptional
1786 >     * completion of either source
1787       */
1788 <    public void testRunAfterEitherAsync4() {
1789 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1790 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1791 <        Noop r = new Noop();
1792 <        CompletableFuture<Void> g = f.runAfterEitherAsync(f2, r);
1793 <        assertTrue(f.cancel(true));
1794 <        checkCompletedWithWrappedCancellationException(g);
1795 <
1796 <        r = new Noop();
1797 <        f = new CompletableFuture<Integer>();
1798 <        f2 = new CompletableFuture<Integer>();
1799 <        assertTrue(f2.cancel(true));
1800 <        g = f.runAfterEitherAsync(f2, r);
1801 <        checkCompletedWithWrappedCancellationException(g);
1802 <    }
1788 >    public void testRunAfterBoth_exceptionalCompletion() {
1789 >        for (ExecutionMode m : ExecutionMode.values())
1790 >        for (boolean createIncomplete : new boolean[] { true, false })
1791 >        for (boolean fFirst : new boolean[] { true, false })
1792 >        for (Integer v1 : new Integer[] { 1, null })
1793 >    {
1794 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1795 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
1796 >        final CFException ex = new CFException();
1797 >        final Noop r = new Noop(m);
1798 >
1799 >        (fFirst ? f : g).complete(v1);
1800 >        if (!createIncomplete)
1801 >            (!fFirst ? f : g).completeExceptionally(ex);
1802 >        final CompletableFuture<Void> h = m.runAfterBoth(f, g, r);
1803 >        if (createIncomplete) {
1804 >            checkIncomplete(h);
1805 >            (!fFirst ? f : g).completeExceptionally(ex);
1806 >        }
1807  
1808 <    /**
1809 <     * thenComposeAsync result completes normally after normal
1810 <     * completion of source
1811 <     */
1812 <    public void testThenComposeAsync() {
1705 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1706 <        CompletableFutureInc r = new CompletableFutureInc();
1707 <        CompletableFuture<Integer> g = f.thenComposeAsync(r);
1708 <        f.complete(one);
1709 <        checkCompletedNormally(g, two);
1710 <    }
1808 >        checkCompletedWithWrappedException(h, ex);
1809 >        r.assertNotInvoked();
1810 >        checkCompletedNormally(fFirst ? f : g, v1);
1811 >        checkCompletedExceptionally(!fFirst ? f : g, ex);
1812 >    }}
1813  
1814      /**
1815 <     * thenComposeAsync result completes exceptionally after
1714 <     * exceptional completion of source
1815 >     * runAfterBoth result completes exceptionally if either source cancelled
1816       */
1817 <    public void testThenComposeAsync2() {
1818 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1819 <        CompletableFutureInc r = new CompletableFutureInc();
1820 <        CompletableFuture<Integer> g = f.thenComposeAsync(r);
1821 <        f.completeExceptionally(new CFException());
1822 <        checkCompletedWithWrappedCFException(g);
1823 <    }
1817 >    public void testRunAfterBoth_sourceCancelled() {
1818 >        for (ExecutionMode m : ExecutionMode.values())
1819 >        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1820 >        for (boolean createIncomplete : new boolean[] { true, false })
1821 >        for (boolean fFirst : new boolean[] { true, false })
1822 >        for (Integer v1 : new Integer[] { 1, null })
1823 >    {
1824 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1825 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
1826 >        final Noop r = new Noop(m);
1827 >
1828 >        (fFirst ? f : g).complete(v1);
1829 >        if (!createIncomplete)
1830 >            assertTrue((!fFirst ? f : g).cancel(mayInterruptIfRunning));
1831 >        final CompletableFuture<Void> h = m.runAfterBoth(f, g, r);
1832 >        if (createIncomplete) {
1833 >            checkIncomplete(h);
1834 >            assertTrue((!fFirst ? f : g).cancel(mayInterruptIfRunning));
1835 >        }
1836  
1837 <    /**
1838 <     * thenComposeAsync result completes exceptionally if action does
1839 <     */
1840 <    public void testThenComposeAsync3() {
1841 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1729 <        FailingCompletableFutureFunction r = new FailingCompletableFutureFunction();
1730 <        CompletableFuture<Integer> g = f.thenComposeAsync(r);
1731 <        f.complete(one);
1732 <        checkCompletedWithWrappedCFException(g);
1733 <    }
1837 >        checkCompletedWithWrappedCancellationException(h);
1838 >        checkCancelled(!fFirst ? f : g);
1839 >        r.assertNotInvoked();
1840 >        checkCompletedNormally(fFirst ? f : g, v1);
1841 >    }}
1842  
1843      /**
1844 <     * thenComposeAsync result completes exceptionally if source cancelled
1844 >     * runAfterBoth result completes exceptionally if action does
1845       */
1846 <    public void testThenComposeAsync4() {
1847 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1848 <        CompletableFutureInc r = new CompletableFutureInc();
1849 <        CompletableFuture<Integer> g = f.thenComposeAsync(r);
1850 <        assertTrue(f.cancel(true));
1851 <        checkCompletedWithWrappedCancellationException(g);
1852 <    }
1853 <
1846 >    public void testRunAfterBoth_actionFailed() {
1847 >        for (ExecutionMode m : ExecutionMode.values())
1848 >        for (boolean fFirst : new boolean[] { true, false })
1849 >        for (Integer v1 : new Integer[] { 1, null })
1850 >        for (Integer v2 : new Integer[] { 2, null })
1851 >    {
1852 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1853 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
1854 >        final FailingRunnable r1 = new FailingRunnable(m);
1855 >        final FailingRunnable r2 = new FailingRunnable(m);
1856 >
1857 >        CompletableFuture<Void> h1 = m.runAfterBoth(f, g, r1);
1858 >        if (fFirst) {
1859 >            f.complete(v1);
1860 >            g.complete(v2);
1861 >        } else {
1862 >            g.complete(v2);
1863 >            f.complete(v1);
1864 >        }
1865 >        CompletableFuture<Void> h2 = m.runAfterBoth(f, g, r2);
1866  
1867 <    // async with explicit executors
1867 >        checkCompletedWithWrappedCFException(h1);
1868 >        checkCompletedWithWrappedCFException(h2);
1869 >        checkCompletedNormally(f, v1);
1870 >        checkCompletedNormally(g, v2);
1871 >    }}
1872  
1873      /**
1874 <     * thenRunAsync result completes normally after normal completion of source
1874 >     * applyToEither result completes normally after normal completion
1875 >     * of either source
1876       */
1877 <    public void testThenRunAsyncE() {
1878 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1879 <        Noop r = new Noop();
1880 <        CompletableFuture<Void> g = f.thenRunAsync(r, new ThreadExecutor());
1881 <        f.complete(null);
1882 <        checkCompletedNormally(g, null);
1883 <
1884 <        // reordered version
1885 <        f = new CompletableFuture<Integer>();
1886 <        f.complete(null);
1887 <        r = new Noop();
1888 <        g = f.thenRunAsync(r, new ThreadExecutor());
1889 <        checkCompletedNormally(g, null);
1890 <    }
1877 >    public void testApplyToEither_normalCompletion() {
1878 >        for (ExecutionMode m : ExecutionMode.values())
1879 >        for (Integer v1 : new Integer[] { 1, null })
1880 >        for (Integer v2 : new Integer[] { 2, null })
1881 >    {
1882 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1883 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
1884 >        final IncFunction[] rs = new IncFunction[6];
1885 >        for (int i = 0; i < rs.length; i++) rs[i] = new IncFunction(m);
1886 >
1887 >        final CompletableFuture<Integer> h0 = m.applyToEither(f, g, rs[0]);
1888 >        final CompletableFuture<Integer> h1 = m.applyToEither(g, f, rs[1]);
1889 >        checkIncomplete(h0);
1890 >        checkIncomplete(h1);
1891 >        rs[0].assertNotInvoked();
1892 >        rs[1].assertNotInvoked();
1893 >        f.complete(v1);
1894 >        checkCompletedNormally(h0, inc(v1));
1895 >        checkCompletedNormally(h1, inc(v1));
1896 >        final CompletableFuture<Integer> h2 = m.applyToEither(f, g, rs[2]);
1897 >        final CompletableFuture<Integer> h3 = m.applyToEither(g, f, rs[3]);
1898 >        checkCompletedNormally(h2, inc(v1));
1899 >        checkCompletedNormally(h3, inc(v1));
1900 >        g.complete(v2);
1901 >
1902 >        // unspecified behavior - both source completions available
1903 >        final CompletableFuture<Integer> h4 = m.applyToEither(f, g, rs[4]);
1904 >        final CompletableFuture<Integer> h5 = m.applyToEither(g, f, rs[5]);
1905 >        rs[4].assertValue(h4.join());
1906 >        rs[5].assertValue(h5.join());
1907 >        assertTrue(Objects.equals(inc(v1), h4.join()) ||
1908 >                   Objects.equals(inc(v2), h4.join()));
1909 >        assertTrue(Objects.equals(inc(v1), h5.join()) ||
1910 >                   Objects.equals(inc(v2), h5.join()));
1911 >
1912 >        checkCompletedNormally(f, v1);
1913 >        checkCompletedNormally(g, v2);
1914 >        checkCompletedNormally(h0, inc(v1));
1915 >        checkCompletedNormally(h1, inc(v1));
1916 >        checkCompletedNormally(h2, inc(v1));
1917 >        checkCompletedNormally(h3, inc(v1));
1918 >        for (int i = 0; i < 4; i++) rs[i].assertValue(inc(v1));
1919 >    }}
1920  
1921      /**
1922 <     * thenRunAsync result completes exceptionally after exceptional
1923 <     * completion of source
1922 >     * applyToEither result completes exceptionally after exceptional
1923 >     * completion of either source
1924       */
1925 <    public void testThenRunAsync2E() {
1926 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1927 <        Noop r = new Noop();
1928 <        CompletableFuture<Void> g = f.thenRunAsync(r, new ThreadExecutor());
1929 <        f.completeExceptionally(new CFException());
1925 >    public void testApplyToEither_exceptionalCompletion() {
1926 >        for (ExecutionMode m : ExecutionMode.values())
1927 >        for (Integer v1 : new Integer[] { 1, null })
1928 >    {
1929 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1930 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
1931 >        final CFException ex = new CFException();
1932 >        final IncFunction[] rs = new IncFunction[6];
1933 >        for (int i = 0; i < rs.length; i++) rs[i] = new IncFunction(m);
1934 >
1935 >        final CompletableFuture<Integer> h0 = m.applyToEither(f, g, rs[0]);
1936 >        final CompletableFuture<Integer> h1 = m.applyToEither(g, f, rs[1]);
1937 >        checkIncomplete(h0);
1938 >        checkIncomplete(h1);
1939 >        rs[0].assertNotInvoked();
1940 >        rs[1].assertNotInvoked();
1941 >        f.completeExceptionally(ex);
1942 >        checkCompletedWithWrappedException(h0, ex);
1943 >        checkCompletedWithWrappedException(h1, ex);
1944 >        final CompletableFuture<Integer> h2 = m.applyToEither(f, g, rs[2]);
1945 >        final CompletableFuture<Integer> h3 = m.applyToEither(g, f, rs[3]);
1946 >        checkCompletedWithWrappedException(h2, ex);
1947 >        checkCompletedWithWrappedException(h3, ex);
1948 >        g.complete(v1);
1949 >
1950 >        // unspecified behavior - both source completions available
1951 >        final CompletableFuture<Integer> h4 = m.applyToEither(f, g, rs[4]);
1952 >        final CompletableFuture<Integer> h5 = m.applyToEither(g, f, rs[5]);
1953          try {
1954 <            g.join();
1955 <            shouldThrow();
1956 <        } catch (Exception ok) {
1954 >            assertEquals(inc(v1), h4.join());
1955 >            rs[4].assertValue(inc(v1));
1956 >        } catch (CompletionException ok) {
1957 >            checkCompletedWithWrappedException(h4, ex);
1958 >            rs[4].assertNotInvoked();
1959 >        }
1960 >        try {
1961 >            assertEquals(inc(v1), h5.join());
1962 >            rs[5].assertValue(inc(v1));
1963 >        } catch (CompletionException ok) {
1964 >            checkCompletedWithWrappedException(h5, ex);
1965 >            rs[5].assertNotInvoked();
1966          }
1781        checkCompletedWithWrappedCFException(g);
1782    }
1783
1784    /**
1785     * thenRunAsync result completes exceptionally if action does
1786     */
1787    public void testThenRunAsync3E() {
1788        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1789        FailingNoop r = new FailingNoop();
1790        CompletableFuture<Void> g = f.thenRunAsync(r, new ThreadExecutor());
1791        f.complete(null);
1792        checkCompletedWithWrappedCFException(g);
1793    }
1794
1795    /**
1796     * thenRunAsync result completes exceptionally if source cancelled
1797     */
1798    public void testThenRunAsync4E() {
1799        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1800        Noop r = new Noop();
1801        CompletableFuture<Void> g = f.thenRunAsync(r, new ThreadExecutor());
1802        assertTrue(f.cancel(true));
1803        checkCompletedWithWrappedCancellationException(g);
1804    }
1805
1806    /**
1807     * thenApplyAsync result completes normally after normal completion of source
1808     */
1809    public void testThenApplyAsyncE() {
1810        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1811        CompletableFuture<Integer> g = f.thenApplyAsync(inc, new ThreadExecutor());
1812        f.complete(one);
1813        checkCompletedNormally(g, two);
1814    }
1815
1816    /**
1817     * thenApplyAsync result completes exceptionally after exceptional
1818     * completion of source
1819     */
1820    public void testThenApplyAsync2E() {
1821        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1822        CompletableFuture<Integer> g = f.thenApplyAsync(inc, new ThreadExecutor());
1823        f.completeExceptionally(new CFException());
1824        checkCompletedWithWrappedCFException(g);
1825    }
1826
1827    /**
1828     * thenApplyAsync result completes exceptionally if action does
1829     */
1830    public void testThenApplyAsync3E() {
1831        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1832        FailingFunction r = new FailingFunction();
1833        CompletableFuture<Integer> g = f.thenApplyAsync(r, new ThreadExecutor());
1834        f.complete(null);
1835        checkCompletedWithWrappedCFException(g);
1836    }
1837
1838    /**
1839     * thenApplyAsync result completes exceptionally if source cancelled
1840     */
1841    public void testThenApplyAsync4E() {
1842        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1843        CompletableFuture<Integer> g = f.thenApplyAsync(inc, new ThreadExecutor());
1844        assertTrue(f.cancel(true));
1845        checkCompletedWithWrappedCancellationException(g);
1846    }
1847
1848    /**
1849     * thenAcceptAsync result completes normally after normal
1850     * completion of source
1851     */
1852    public void testThenAcceptAsyncE() {
1853        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1854        IncAction r = new IncAction();
1855        CompletableFuture<Void> g = f.thenAcceptAsync(r, new ThreadExecutor());
1856        f.complete(one);
1857        checkCompletedNormally(g, null);
1858        assertEquals(r.value, 2);
1859    }
1860
1861    /**
1862     * thenAcceptAsync result completes exceptionally after exceptional
1863     * completion of source
1864     */
1865    public void testThenAcceptAsync2E() {
1866        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1867        IncAction r = new IncAction();
1868        CompletableFuture<Void> g = f.thenAcceptAsync(r, new ThreadExecutor());
1869        f.completeExceptionally(new CFException());
1870        checkCompletedWithWrappedCFException(g);
1871    }
1872
1873    /**
1874     * thenAcceptAsync result completes exceptionally if action does
1875     */
1876    public void testThenAcceptAsync3E() {
1877        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1878        FailingConsumer r = new FailingConsumer();
1879        CompletableFuture<Void> g = f.thenAcceptAsync(r, new ThreadExecutor());
1880        f.complete(null);
1881        checkCompletedWithWrappedCFException(g);
1882    }
1883
1884    /**
1885     * thenAcceptAsync result completes exceptionally if source cancelled
1886     */
1887    public void testThenAcceptAsync4E() {
1888        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1889        IncAction r = new IncAction();
1890        CompletableFuture<Void> g = f.thenAcceptAsync(r, new ThreadExecutor());
1891        assertTrue(f.cancel(true));
1892        checkCompletedWithWrappedCancellationException(g);
1893    }
1894    /**
1895     * thenCombineAsync result completes normally after normal
1896     * completion of sources
1897     */
1898    public void testThenCombineAsyncE() {
1899        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1900        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1901        CompletableFuture<Integer> g = f.thenCombineAsync(f2, add, new ThreadExecutor());
1902        f.complete(one);
1903        checkIncomplete(g);
1904        f2.complete(two);
1905        checkCompletedNormally(g, three);
1906    }
1907
1908    /**
1909     * thenCombineAsync result completes exceptionally after exceptional
1910     * completion of source
1911     */
1912    public void testThenCombineAsync2E() {
1913        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1914        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1915        CompletableFuture<Integer> g = f.thenCombineAsync(f2, add, new ThreadExecutor());
1916        f.completeExceptionally(new CFException());
1917        f2.complete(two);
1918        checkCompletedWithWrappedCFException(g);
1919
1920        f = new CompletableFuture<Integer>();
1921        f2 = new CompletableFuture<Integer>();
1922        g = f.thenCombineAsync(f2, add, new ThreadExecutor());
1923        f.complete(one);
1924        f2.completeExceptionally(new CFException());
1925        checkCompletedWithWrappedCFException(g);
1926    }
1967  
1968 <    /**
1969 <     * thenCombineAsync result completes exceptionally if action does
1970 <     */
1971 <    public void testThenCombineAsync3E() {
1972 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1973 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1974 <        FailingBiFunction r = new FailingBiFunction();
1975 <        CompletableFuture<Integer> g = f.thenCombineAsync(f2, r, new ThreadExecutor());
1976 <        f.complete(one);
1977 <        checkIncomplete(g);
1978 <        f2.complete(two);
1979 <        checkCompletedWithWrappedCFException(g);
1980 <    }
1968 >        checkCompletedExceptionally(f, ex);
1969 >        checkCompletedNormally(g, v1);
1970 >        checkCompletedWithWrappedException(h0, ex);
1971 >        checkCompletedWithWrappedException(h1, ex);
1972 >        checkCompletedWithWrappedException(h2, ex);
1973 >        checkCompletedWithWrappedException(h3, ex);
1974 >        checkCompletedWithWrappedException(h4, ex);
1975 >        for (int i = 0; i < 4; i++) rs[i].assertNotInvoked();
1976 >    }}
1977 >
1978 >    public void testApplyToEither_exceptionalCompletion2() {
1979 >        for (ExecutionMode m : ExecutionMode.values())
1980 >        for (boolean fFirst : new boolean[] { true, false })
1981 >        for (Integer v1 : new Integer[] { 1, null })
1982 >    {
1983 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1984 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
1985 >        final CFException ex = new CFException();
1986 >        final IncFunction[] rs = new IncFunction[6];
1987 >        for (int i = 0; i < rs.length; i++) rs[i] = new IncFunction(m);
1988 >
1989 >        final CompletableFuture<Integer> h0 = m.applyToEither(f, g, rs[0]);
1990 >        final CompletableFuture<Integer> h1 = m.applyToEither(g, f, rs[1]);
1991 >        if (fFirst) {
1992 >            f.complete(v1);
1993 >            g.completeExceptionally(ex);
1994 >        } else {
1995 >            g.completeExceptionally(ex);
1996 >            f.complete(v1);
1997 >        }
1998 >        final CompletableFuture<Integer> h2 = m.applyToEither(f, g, rs[2]);
1999 >        final CompletableFuture<Integer> h3 = m.applyToEither(g, f, rs[3]);
2000  
2001 <    /**
2002 <     * thenCombineAsync result completes exceptionally if either source cancelled
2003 <     */
2004 <    public void testThenCombineAsync4E() {
2005 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
2006 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
2007 <        CompletableFuture<Integer> g = f.thenCombineAsync(f2, add, new ThreadExecutor());
2008 <        assertTrue(f.cancel(true));
2009 <        f2.complete(two);
2010 <        checkCompletedWithWrappedCancellationException(g);
2001 >        // unspecified behavior - both source completions available
2002 >        try {
2003 >            assertEquals(inc(v1), h0.join());
2004 >            rs[0].assertValue(inc(v1));
2005 >        } catch (CompletionException ok) {
2006 >            checkCompletedWithWrappedException(h0, ex);
2007 >            rs[0].assertNotInvoked();
2008 >        }
2009 >        try {
2010 >            assertEquals(inc(v1), h1.join());
2011 >            rs[1].assertValue(inc(v1));
2012 >        } catch (CompletionException ok) {
2013 >            checkCompletedWithWrappedException(h1, ex);
2014 >            rs[1].assertNotInvoked();
2015 >        }
2016 >        try {
2017 >            assertEquals(inc(v1), h2.join());
2018 >            rs[2].assertValue(inc(v1));
2019 >        } catch (CompletionException ok) {
2020 >            checkCompletedWithWrappedException(h2, ex);
2021 >            rs[2].assertNotInvoked();
2022 >        }
2023 >        try {
2024 >            assertEquals(inc(v1), h3.join());
2025 >            rs[3].assertValue(inc(v1));
2026 >        } catch (CompletionException ok) {
2027 >            checkCompletedWithWrappedException(h3, ex);
2028 >            rs[3].assertNotInvoked();
2029 >        }
2030  
2031 <        f = new CompletableFuture<Integer>();
2032 <        f2 = new CompletableFuture<Integer>();
2033 <        g = f.thenCombineAsync(f2, add, new ThreadExecutor());
1956 <        f.complete(one);
1957 <        assertTrue(f2.cancel(true));
1958 <        checkCompletedWithWrappedCancellationException(g);
1959 <    }
2031 >        checkCompletedNormally(f, v1);
2032 >        checkCompletedExceptionally(g, ex);
2033 >    }}
2034  
2035      /**
2036 <     * thenAcceptBothAsync result completes normally after normal
1963 <     * completion of sources
2036 >     * applyToEither result completes exceptionally if either source cancelled
2037       */
2038 <    public void testThenAcceptBothAsyncE() {
2039 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
2040 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
2041 <        AddAction r = new AddAction();
2042 <        CompletableFuture<Void> g = f.thenAcceptBothAsync(f2, r, new ThreadExecutor());
2043 <        f.complete(one);
2044 <        checkIncomplete(g);
2045 <        f2.complete(two);
2046 <        checkCompletedNormally(g, null);
2047 <        assertEquals(r.value, 3);
2048 <    }
2038 >    public void testApplyToEither_sourceCancelled() {
2039 >        for (ExecutionMode m : ExecutionMode.values())
2040 >        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2041 >        for (Integer v1 : new Integer[] { 1, null })
2042 >    {
2043 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
2044 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
2045 >        final IncFunction[] rs = new IncFunction[6];
2046 >        for (int i = 0; i < rs.length; i++) rs[i] = new IncFunction(m);
2047 >
2048 >        final CompletableFuture<Integer> h0 = m.applyToEither(f, g, rs[0]);
2049 >        final CompletableFuture<Integer> h1 = m.applyToEither(g, f, rs[1]);
2050 >        checkIncomplete(h0);
2051 >        checkIncomplete(h1);
2052 >        rs[0].assertNotInvoked();
2053 >        rs[1].assertNotInvoked();
2054 >        f.cancel(mayInterruptIfRunning);
2055 >        checkCompletedWithWrappedCancellationException(h0);
2056 >        checkCompletedWithWrappedCancellationException(h1);
2057 >        final CompletableFuture<Integer> h2 = m.applyToEither(f, g, rs[2]);
2058 >        final CompletableFuture<Integer> h3 = m.applyToEither(g, f, rs[3]);
2059 >        checkCompletedWithWrappedCancellationException(h2);
2060 >        checkCompletedWithWrappedCancellationException(h3);
2061 >        g.complete(v1);
2062 >
2063 >        // unspecified behavior - both source completions available
2064 >        final CompletableFuture<Integer> h4 = m.applyToEither(f, g, rs[4]);
2065 >        final CompletableFuture<Integer> h5 = m.applyToEither(g, f, rs[5]);
2066 >        try {
2067 >            assertEquals(inc(v1), h4.join());
2068 >            rs[4].assertValue(inc(v1));
2069 >        } catch (CompletionException ok) {
2070 >            checkCompletedWithWrappedCancellationException(h4);
2071 >            rs[4].assertNotInvoked();
2072 >        }
2073 >        try {
2074 >            assertEquals(inc(v1), h5.join());
2075 >            rs[5].assertValue(inc(v1));
2076 >        } catch (CompletionException ok) {
2077 >            checkCompletedWithWrappedCancellationException(h5);
2078 >            rs[5].assertNotInvoked();
2079 >        }
2080  
2081 <    /**
2082 <     * thenAcceptBothAsync result completes exceptionally after exceptional
2083 <     * completion of source
2084 <     */
2085 <    public void testThenAcceptBothAsync2E() {
2086 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
2087 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
2088 <        AddAction r = new AddAction();
2089 <        CompletableFuture<Void> g = f.thenAcceptBothAsync(f2, r, new ThreadExecutor());
2090 <        f.completeExceptionally(new CFException());
2091 <        f2.complete(two);
2092 <        checkCompletedWithWrappedCFException(g);
2081 >        checkCancelled(f);
2082 >        checkCompletedNormally(g, v1);
2083 >        checkCompletedWithWrappedCancellationException(h0);
2084 >        checkCompletedWithWrappedCancellationException(h1);
2085 >        checkCompletedWithWrappedCancellationException(h2);
2086 >        checkCompletedWithWrappedCancellationException(h3);
2087 >        for (int i = 0; i < 4; i++) rs[i].assertNotInvoked();
2088 >    }}
2089 >
2090 >    public void testApplyToEither_sourceCancelled2() {
2091 >        for (ExecutionMode m : ExecutionMode.values())
2092 >        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2093 >        for (boolean fFirst : new boolean[] { true, false })
2094 >        for (Integer v1 : new Integer[] { 1, null })
2095 >    {
2096 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
2097 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
2098 >        final IncFunction[] rs = new IncFunction[6];
2099 >        for (int i = 0; i < rs.length; i++) rs[i] = new IncFunction(m);
2100 >
2101 >        final CompletableFuture<Integer> h0 = m.applyToEither(f, g, rs[0]);
2102 >        final CompletableFuture<Integer> h1 = m.applyToEither(g, f, rs[1]);
2103 >        if (fFirst) {
2104 >            f.complete(v1);
2105 >            g.cancel(mayInterruptIfRunning);
2106 >        } else {
2107 >            g.cancel(mayInterruptIfRunning);
2108 >            f.complete(v1);
2109 >        }
2110 >        final CompletableFuture<Integer> h2 = m.applyToEither(f, g, rs[2]);
2111 >        final CompletableFuture<Integer> h3 = m.applyToEither(g, f, rs[3]);
2112  
2113 <        r = new AddAction();
2114 <        f = new CompletableFuture<Integer>();
2115 <        f2 = new CompletableFuture<Integer>();
2116 <        g = f.thenAcceptBothAsync(f2, r, new ThreadExecutor());
2117 <        f.complete(one);
2118 <        f2.completeExceptionally(new CFException());
2119 <        checkCompletedWithWrappedCFException(g);
2120 <    }
2113 >        // unspecified behavior - both source completions available
2114 >        try {
2115 >            assertEquals(inc(v1), h0.join());
2116 >            rs[0].assertValue(inc(v1));
2117 >        } catch (CompletionException ok) {
2118 >            checkCompletedWithWrappedCancellationException(h0);
2119 >            rs[0].assertNotInvoked();
2120 >        }
2121 >        try {
2122 >            assertEquals(inc(v1), h1.join());
2123 >            rs[1].assertValue(inc(v1));
2124 >        } catch (CompletionException ok) {
2125 >            checkCompletedWithWrappedCancellationException(h1);
2126 >            rs[1].assertNotInvoked();
2127 >        }
2128 >        try {
2129 >            assertEquals(inc(v1), h2.join());
2130 >            rs[2].assertValue(inc(v1));
2131 >        } catch (CompletionException ok) {
2132 >            checkCompletedWithWrappedCancellationException(h2);
2133 >            rs[2].assertNotInvoked();
2134 >        }
2135 >        try {
2136 >            assertEquals(inc(v1), h3.join());
2137 >            rs[3].assertValue(inc(v1));
2138 >        } catch (CompletionException ok) {
2139 >            checkCompletedWithWrappedCancellationException(h3);
2140 >            rs[3].assertNotInvoked();
2141 >        }
2142  
2143 <    /**
2144 <     * thenAcceptBothAsync result completes exceptionally if action does
2145 <     */
2002 <    public void testThenAcceptBothAsync3E() {
2003 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
2004 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
2005 <        FailingBiConsumer r = new FailingBiConsumer();
2006 <        CompletableFuture<Void> g = f.thenAcceptBothAsync(f2, r, new ThreadExecutor());
2007 <        f.complete(one);
2008 <        checkIncomplete(g);
2009 <        f2.complete(two);
2010 <        checkCompletedWithWrappedCFException(g);
2011 <    }
2143 >        checkCompletedNormally(f, v1);
2144 >        checkCancelled(g);
2145 >    }}
2146  
2147      /**
2148 <     * thenAcceptBothAsync result completes exceptionally if either source cancelled
2148 >     * applyToEither result completes exceptionally if action does
2149       */
2150 <    public void testThenAcceptBothAsync4E() {
2151 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
2152 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
2153 <        AddAction r = new AddAction();
2154 <        CompletableFuture<Void> g = f.thenAcceptBothAsync(f2, r, new ThreadExecutor());
2155 <        assertTrue(f.cancel(true));
2156 <        f2.complete(two);
2157 <        checkCompletedWithWrappedCancellationException(g);
2158 <
2159 <        r = new AddAction();
2160 <        f = new CompletableFuture<Integer>();
2161 <        f2 = new CompletableFuture<Integer>();
2162 <        g = f.thenAcceptBothAsync(f2, r, new ThreadExecutor());
2163 <        f.complete(one);
2164 <        assertTrue(f2.cancel(true));
2165 <        checkCompletedWithWrappedCancellationException(g);
2166 <    }
2150 >    public void testApplyToEither_actionFailed() {
2151 >        for (ExecutionMode m : ExecutionMode.values())
2152 >        for (Integer v1 : new Integer[] { 1, null })
2153 >        for (Integer v2 : new Integer[] { 2, null })
2154 >    {
2155 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
2156 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
2157 >        final FailingFunction[] rs = new FailingFunction[6];
2158 >        for (int i = 0; i < rs.length; i++) rs[i] = new FailingFunction(m);
2159 >
2160 >        final CompletableFuture<Integer> h0 = m.applyToEither(f, g, rs[0]);
2161 >        final CompletableFuture<Integer> h1 = m.applyToEither(g, f, rs[1]);
2162 >        f.complete(v1);
2163 >        final CompletableFuture<Integer> h2 = m.applyToEither(f, g, rs[2]);
2164 >        final CompletableFuture<Integer> h3 = m.applyToEither(g, f, rs[3]);
2165 >        checkCompletedWithWrappedCFException(h0);
2166 >        checkCompletedWithWrappedCFException(h1);
2167 >        checkCompletedWithWrappedCFException(h2);
2168 >        checkCompletedWithWrappedCFException(h3);
2169 >        for (int i = 0; i < 4; i++) rs[i].assertValue(v1);
2170 >
2171 >        g.complete(v2);
2172 >
2173 >        // unspecified behavior - both source completions available
2174 >        final CompletableFuture<Integer> h4 = m.applyToEither(f, g, rs[4]);
2175 >        final CompletableFuture<Integer> h5 = m.applyToEither(g, f, rs[5]);
2176 >
2177 >        checkCompletedWithWrappedCFException(h4);
2178 >        assertTrue(Objects.equals(v1, rs[4].value) ||
2179 >                   Objects.equals(v2, rs[4].value));
2180 >        checkCompletedWithWrappedCFException(h5);
2181 >        assertTrue(Objects.equals(v1, rs[5].value) ||
2182 >                   Objects.equals(v2, rs[5].value));
2183 >
2184 >        checkCompletedNormally(f, v1);
2185 >        checkCompletedNormally(g, v2);
2186 >    }}
2187  
2188      /**
2189 <     * runAfterBothAsync result completes normally after normal
2190 <     * completion of sources
2189 >     * acceptEither result completes normally after normal completion
2190 >     * of either source
2191       */
2192 <    public void testRunAfterBothAsyncE() {
2193 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
2194 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
2195 <        Noop r = new Noop();
2196 <        CompletableFuture<Void> g = f.runAfterBothAsync(f2, r, new ThreadExecutor());
2197 <        f.complete(one);
2198 <        checkIncomplete(g);
2199 <        f2.complete(two);
2200 <        checkCompletedNormally(g, null);
2201 <        assertTrue(r.ran);
2202 <    }
2192 >    public void testAcceptEither_normalCompletion() {
2193 >        for (ExecutionMode m : ExecutionMode.values())
2194 >        for (Integer v1 : new Integer[] { 1, null })
2195 >        for (Integer v2 : new Integer[] { 2, null })
2196 >    {
2197 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
2198 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
2199 >        final NoopConsumer[] rs = new NoopConsumer[6];
2200 >        for (int i = 0; i < rs.length; i++) rs[i] = new NoopConsumer(m);
2201 >
2202 >        final CompletableFuture<Void> h0 = m.acceptEither(f, g, rs[0]);
2203 >        final CompletableFuture<Void> h1 = m.acceptEither(g, f, rs[1]);
2204 >        checkIncomplete(h0);
2205 >        checkIncomplete(h1);
2206 >        rs[0].assertNotInvoked();
2207 >        rs[1].assertNotInvoked();
2208 >        f.complete(v1);
2209 >        checkCompletedNormally(h0, null);
2210 >        checkCompletedNormally(h1, null);
2211 >        rs[0].assertValue(v1);
2212 >        rs[1].assertValue(v1);
2213 >        final CompletableFuture<Void> h2 = m.acceptEither(f, g, rs[2]);
2214 >        final CompletableFuture<Void> h3 = m.acceptEither(g, f, rs[3]);
2215 >        checkCompletedNormally(h2, null);
2216 >        checkCompletedNormally(h3, null);
2217 >        rs[2].assertValue(v1);
2218 >        rs[3].assertValue(v1);
2219 >        g.complete(v2);
2220 >
2221 >        // unspecified behavior - both source completions available
2222 >        final CompletableFuture<Void> h4 = m.acceptEither(f, g, rs[4]);
2223 >        final CompletableFuture<Void> h5 = m.acceptEither(g, f, rs[5]);
2224 >        checkCompletedNormally(h4, null);
2225 >        checkCompletedNormally(h5, null);
2226 >        assertTrue(Objects.equals(v1, rs[4].value) ||
2227 >                   Objects.equals(v2, rs[4].value));
2228 >        assertTrue(Objects.equals(v1, rs[5].value) ||
2229 >                   Objects.equals(v2, rs[5].value));
2230 >
2231 >        checkCompletedNormally(f, v1);
2232 >        checkCompletedNormally(g, v2);
2233 >        checkCompletedNormally(h0, null);
2234 >        checkCompletedNormally(h1, null);
2235 >        checkCompletedNormally(h2, null);
2236 >        checkCompletedNormally(h3, null);
2237 >        for (int i = 0; i < 4; i++) rs[i].assertValue(v1);
2238 >    }}
2239  
2240      /**
2241 <     * runAfterBothAsync result completes exceptionally after exceptional
2242 <     * completion of source
2241 >     * acceptEither result completes exceptionally after exceptional
2242 >     * completion of either source
2243       */
2244 <    public void testRunAfterBothAsync2E() {
2245 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
2246 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
2247 <        Noop r = new Noop();
2248 <        CompletableFuture<Void> g = f.runAfterBothAsync(f2, r, new ThreadExecutor());
2249 <        f.completeExceptionally(new CFException());
2250 <        f2.complete(two);
2251 <        checkCompletedWithWrappedCFException(g);
2252 <
2253 <        r = new Noop();
2254 <        f = new CompletableFuture<Integer>();
2255 <        f2 = new CompletableFuture<Integer>();
2256 <        g = f.runAfterBothAsync(f2, r, new ThreadExecutor());
2257 <        f.complete(one);
2258 <        f2.completeExceptionally(new CFException());
2259 <        checkCompletedWithWrappedCFException(g);
2260 <    }
2244 >    public void testAcceptEither_exceptionalCompletion() {
2245 >        for (ExecutionMode m : ExecutionMode.values())
2246 >        for (Integer v1 : new Integer[] { 1, null })
2247 >    {
2248 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
2249 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
2250 >        final CFException ex = new CFException();
2251 >        final NoopConsumer[] rs = new NoopConsumer[6];
2252 >        for (int i = 0; i < rs.length; i++) rs[i] = new NoopConsumer(m);
2253 >
2254 >        final CompletableFuture<Void> h0 = m.acceptEither(f, g, rs[0]);
2255 >        final CompletableFuture<Void> h1 = m.acceptEither(g, f, rs[1]);
2256 >        checkIncomplete(h0);
2257 >        checkIncomplete(h1);
2258 >        rs[0].assertNotInvoked();
2259 >        rs[1].assertNotInvoked();
2260 >        f.completeExceptionally(ex);
2261 >        checkCompletedWithWrappedException(h0, ex);
2262 >        checkCompletedWithWrappedException(h1, ex);
2263 >        final CompletableFuture<Void> h2 = m.acceptEither(f, g, rs[2]);
2264 >        final CompletableFuture<Void> h3 = m.acceptEither(g, f, rs[3]);
2265 >        checkCompletedWithWrappedException(h2, ex);
2266 >        checkCompletedWithWrappedException(h3, ex);
2267 >
2268 >        g.complete(v1);
2269 >
2270 >        // unspecified behavior - both source completions available
2271 >        final CompletableFuture<Void> h4 = m.acceptEither(f, g, rs[4]);
2272 >        final CompletableFuture<Void> h5 = m.acceptEither(g, f, rs[5]);
2273 >        try {
2274 >            assertNull(h4.join());
2275 >            rs[4].assertValue(v1);
2276 >        } catch (CompletionException ok) {
2277 >            checkCompletedWithWrappedException(h4, ex);
2278 >            rs[4].assertNotInvoked();
2279 >        }
2280 >        try {
2281 >            assertNull(h5.join());
2282 >            rs[5].assertValue(v1);
2283 >        } catch (CompletionException ok) {
2284 >            checkCompletedWithWrappedException(h5, ex);
2285 >            rs[5].assertNotInvoked();
2286 >        }
2287  
2288 <    /**
2289 <     * runAfterBothAsync result completes exceptionally if action does
2290 <     */
2291 <    public void testRunAfterBothAsync3E() {
2292 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
2293 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
2294 <        FailingNoop r = new FailingNoop();
2295 <        CompletableFuture<Void> g = f.runAfterBothAsync(f2, r, new ThreadExecutor());
2296 <        f.complete(one);
2297 <        checkIncomplete(g);
2298 <        f2.complete(two);
2299 <        checkCompletedWithWrappedCFException(g);
2300 <    }
2288 >        checkCompletedExceptionally(f, ex);
2289 >        checkCompletedNormally(g, v1);
2290 >        checkCompletedWithWrappedException(h0, ex);
2291 >        checkCompletedWithWrappedException(h1, ex);
2292 >        checkCompletedWithWrappedException(h2, ex);
2293 >        checkCompletedWithWrappedException(h3, ex);
2294 >        checkCompletedWithWrappedException(h4, ex);
2295 >        for (int i = 0; i < 4; i++) rs[i].assertNotInvoked();
2296 >    }}
2297 >
2298 >    public void testAcceptEither_exceptionalCompletion2() {
2299 >        for (ExecutionMode m : ExecutionMode.values())
2300 >        for (boolean fFirst : new boolean[] { true, false })
2301 >        for (Integer v1 : new Integer[] { 1, null })
2302 >    {
2303 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
2304 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
2305 >        final CFException ex = new CFException();
2306 >        final NoopConsumer[] rs = new NoopConsumer[6];
2307 >        for (int i = 0; i < rs.length; i++) rs[i] = new NoopConsumer(m);
2308 >
2309 >        final CompletableFuture<Void> h0 = m.acceptEither(f, g, rs[0]);
2310 >        final CompletableFuture<Void> h1 = m.acceptEither(g, f, rs[1]);
2311 >        if (fFirst) {
2312 >            f.complete(v1);
2313 >            g.completeExceptionally(ex);
2314 >        } else {
2315 >            g.completeExceptionally(ex);
2316 >            f.complete(v1);
2317 >        }
2318 >        final CompletableFuture<Void> h2 = m.acceptEither(f, g, rs[2]);
2319 >        final CompletableFuture<Void> h3 = m.acceptEither(g, f, rs[3]);
2320  
2321 <    /**
2322 <     * runAfterBothAsync result completes exceptionally if either source cancelled
2323 <     */
2324 <    public void testRunAfterBothAsync4E() {
2325 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
2326 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
2327 <        Noop r = new Noop();
2328 <        CompletableFuture<Void> g = f.runAfterBothAsync(f2, r, new ThreadExecutor());
2329 <        assertTrue(f.cancel(true));
2330 <        f2.complete(two);
2331 <        checkCompletedWithWrappedCancellationException(g);
2321 >        // unspecified behavior - both source completions available
2322 >        try {
2323 >            assertEquals(null, h0.join());
2324 >            rs[0].assertValue(v1);
2325 >        } catch (CompletionException ok) {
2326 >            checkCompletedWithWrappedException(h0, ex);
2327 >            rs[0].assertNotInvoked();
2328 >        }
2329 >        try {
2330 >            assertEquals(null, h1.join());
2331 >            rs[1].assertValue(v1);
2332 >        } catch (CompletionException ok) {
2333 >            checkCompletedWithWrappedException(h1, ex);
2334 >            rs[1].assertNotInvoked();
2335 >        }
2336 >        try {
2337 >            assertEquals(null, h2.join());
2338 >            rs[2].assertValue(v1);
2339 >        } catch (CompletionException ok) {
2340 >            checkCompletedWithWrappedException(h2, ex);
2341 >            rs[2].assertNotInvoked();
2342 >        }
2343 >        try {
2344 >            assertEquals(null, h3.join());
2345 >            rs[3].assertValue(v1);
2346 >        } catch (CompletionException ok) {
2347 >            checkCompletedWithWrappedException(h3, ex);
2348 >            rs[3].assertNotInvoked();
2349 >        }
2350  
2351 <        r = new Noop();
2352 <        f = new CompletableFuture<Integer>();
2353 <        f2 = new CompletableFuture<Integer>();
2101 <        g = f.runAfterBothAsync(f2, r, new ThreadExecutor());
2102 <        f.complete(one);
2103 <        assertTrue(f2.cancel(true));
2104 <        checkCompletedWithWrappedCancellationException(g);
2105 <    }
2351 >        checkCompletedNormally(f, v1);
2352 >        checkCompletedExceptionally(g, ex);
2353 >    }}
2354  
2355      /**
2356 <     * applyToEitherAsync result completes normally after normal
2109 <     * completion of sources
2356 >     * acceptEither result completes exceptionally if either source cancelled
2357       */
2358 <    public void testApplyToEitherAsyncE() {
2359 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
2360 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
2361 <        CompletableFuture<Integer> g = f.applyToEitherAsync(f2, inc, new ThreadExecutor());
2362 <        f.complete(one);
2363 <        checkCompletedNormally(g, two);
2358 >    public void testAcceptEither_sourceCancelled() {
2359 >        for (ExecutionMode m : ExecutionMode.values())
2360 >        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2361 >        for (Integer v1 : new Integer[] { 1, null })
2362 >    {
2363 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
2364 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
2365 >        final NoopConsumer[] rs = new NoopConsumer[6];
2366 >        for (int i = 0; i < rs.length; i++) rs[i] = new NoopConsumer(m);
2367 >
2368 >        final CompletableFuture<Void> h0 = m.acceptEither(f, g, rs[0]);
2369 >        final CompletableFuture<Void> h1 = m.acceptEither(g, f, rs[1]);
2370 >        checkIncomplete(h0);
2371 >        checkIncomplete(h1);
2372 >        rs[0].assertNotInvoked();
2373 >        rs[1].assertNotInvoked();
2374 >        f.cancel(mayInterruptIfRunning);
2375 >        checkCompletedWithWrappedCancellationException(h0);
2376 >        checkCompletedWithWrappedCancellationException(h1);
2377 >        final CompletableFuture<Void> h2 = m.acceptEither(f, g, rs[2]);
2378 >        final CompletableFuture<Void> h3 = m.acceptEither(g, f, rs[3]);
2379 >        checkCompletedWithWrappedCancellationException(h2);
2380 >        checkCompletedWithWrappedCancellationException(h3);
2381 >
2382 >        g.complete(v1);
2383 >
2384 >        // unspecified behavior - both source completions available
2385 >        final CompletableFuture<Void> h4 = m.acceptEither(f, g, rs[4]);
2386 >        final CompletableFuture<Void> h5 = m.acceptEither(g, f, rs[5]);
2387 >        try {
2388 >            assertNull(h4.join());
2389 >            rs[4].assertValue(v1);
2390 >        } catch (CompletionException ok) {
2391 >            checkCompletedWithWrappedCancellationException(h4);
2392 >            rs[4].assertNotInvoked();
2393 >        }
2394 >        try {
2395 >            assertNull(h5.join());
2396 >            rs[5].assertValue(v1);
2397 >        } catch (CompletionException ok) {
2398 >            checkCompletedWithWrappedCancellationException(h5);
2399 >            rs[5].assertNotInvoked();
2400 >        }
2401  
2402 <        f = new CompletableFuture<Integer>();
2403 <        f.complete(one);
2404 <        f2 = new CompletableFuture<Integer>();
2405 <        g = f.applyToEitherAsync(f2, inc, new ThreadExecutor());
2406 <        checkCompletedNormally(g, two);
2407 <    }
2402 >        checkCancelled(f);
2403 >        checkCompletedNormally(g, v1);
2404 >        checkCompletedWithWrappedCancellationException(h0);
2405 >        checkCompletedWithWrappedCancellationException(h1);
2406 >        checkCompletedWithWrappedCancellationException(h2);
2407 >        checkCompletedWithWrappedCancellationException(h3);
2408 >        for (int i = 0; i < 4; i++) rs[i].assertNotInvoked();
2409 >    }}
2410  
2411      /**
2412 <     * applyToEitherAsync result completes exceptionally after exceptional
2127 <     * completion of source
2412 >     * acceptEither result completes exceptionally if action does
2413       */
2414 <    public void testApplyToEitherAsync2E() {
2415 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
2416 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
2417 <        CompletableFuture<Integer> g = f.applyToEitherAsync(f2, inc, new ThreadExecutor());
2418 <        f.completeExceptionally(new CFException());
2419 <        checkCompletedWithWrappedCFException(g);
2420 <
2421 <        f = new CompletableFuture<Integer>();
2422 <        f2 = new CompletableFuture<Integer>();
2423 <        f2.completeExceptionally(new CFException());
2424 <        g = f.applyToEitherAsync(f2, inc, new ThreadExecutor());
2425 <        f.complete(one);
2426 <        checkCompletedWithWrappedCFException(g);
2427 <    }
2414 >    public void testAcceptEither_actionFailed() {
2415 >        for (ExecutionMode m : ExecutionMode.values())
2416 >        for (Integer v1 : new Integer[] { 1, null })
2417 >        for (Integer v2 : new Integer[] { 2, null })
2418 >    {
2419 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
2420 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
2421 >        final FailingConsumer[] rs = new FailingConsumer[6];
2422 >        for (int i = 0; i < rs.length; i++) rs[i] = new FailingConsumer(m);
2423 >
2424 >        final CompletableFuture<Void> h0 = m.acceptEither(f, g, rs[0]);
2425 >        final CompletableFuture<Void> h1 = m.acceptEither(g, f, rs[1]);
2426 >        f.complete(v1);
2427 >        final CompletableFuture<Void> h2 = m.acceptEither(f, g, rs[2]);
2428 >        final CompletableFuture<Void> h3 = m.acceptEither(g, f, rs[3]);
2429 >        checkCompletedWithWrappedCFException(h0);
2430 >        checkCompletedWithWrappedCFException(h1);
2431 >        checkCompletedWithWrappedCFException(h2);
2432 >        checkCompletedWithWrappedCFException(h3);
2433 >        for (int i = 0; i < 4; i++) rs[i].assertValue(v1);
2434 >
2435 >        g.complete(v2);
2436 >
2437 >        // unspecified behavior - both source completions available
2438 >        final CompletableFuture<Void> h4 = m.acceptEither(f, g, rs[4]);
2439 >        final CompletableFuture<Void> h5 = m.acceptEither(g, f, rs[5]);
2440 >
2441 >        checkCompletedWithWrappedCFException(h4);
2442 >        assertTrue(Objects.equals(v1, rs[4].value) ||
2443 >                   Objects.equals(v2, rs[4].value));
2444 >        checkCompletedWithWrappedCFException(h5);
2445 >        assertTrue(Objects.equals(v1, rs[5].value) ||
2446 >                   Objects.equals(v2, rs[5].value));
2447 >
2448 >        checkCompletedNormally(f, v1);
2449 >        checkCompletedNormally(g, v2);
2450 >    }}
2451  
2452      /**
2453 <     * applyToEitherAsync result completes exceptionally if action does
2453 >     * runAfterEither result completes normally after normal completion
2454 >     * of either source
2455       */
2456 <    public void testApplyToEitherAsync3E() {
2457 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
2458 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
2459 <        FailingFunction r = new FailingFunction();
2460 <        CompletableFuture<Integer> g = f.applyToEitherAsync(f2, r, new ThreadExecutor());
2461 <        f.complete(one);
2462 <        checkCompletedWithWrappedCFException(g);
2463 <    }
2456 >    public void testRunAfterEither_normalCompletion() {
2457 >        for (ExecutionMode m : ExecutionMode.values())
2458 >        for (Integer v1 : new Integer[] { 1, null })
2459 >        for (Integer v2 : new Integer[] { 2, null })
2460 >    {
2461 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
2462 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
2463 >        final Noop[] rs = new Noop[6];
2464 >        for (int i = 0; i < rs.length; i++) rs[i] = new Noop(m);
2465 >
2466 >        final CompletableFuture<Void> h0 = m.runAfterEither(f, g, rs[0]);
2467 >        final CompletableFuture<Void> h1 = m.runAfterEither(g, f, rs[1]);
2468 >        checkIncomplete(h0);
2469 >        checkIncomplete(h1);
2470 >        rs[0].assertNotInvoked();
2471 >        rs[1].assertNotInvoked();
2472 >        f.complete(v1);
2473 >        checkCompletedNormally(h0, null);
2474 >        checkCompletedNormally(h1, null);
2475 >        rs[0].assertInvoked();
2476 >        rs[1].assertInvoked();
2477 >        final CompletableFuture<Void> h2 = m.runAfterEither(f, g, rs[2]);
2478 >        final CompletableFuture<Void> h3 = m.runAfterEither(g, f, rs[3]);
2479 >        checkCompletedNormally(h2, null);
2480 >        checkCompletedNormally(h3, null);
2481 >        rs[2].assertInvoked();
2482 >        rs[3].assertInvoked();
2483 >
2484 >        g.complete(v2);
2485 >
2486 >        final CompletableFuture<Void> h4 = m.runAfterEither(f, g, rs[4]);
2487 >        final CompletableFuture<Void> h5 = m.runAfterEither(g, f, rs[5]);
2488 >
2489 >        checkCompletedNormally(f, v1);
2490 >        checkCompletedNormally(g, v2);
2491 >        checkCompletedNormally(h0, null);
2492 >        checkCompletedNormally(h1, null);
2493 >        checkCompletedNormally(h2, null);
2494 >        checkCompletedNormally(h3, null);
2495 >        checkCompletedNormally(h4, null);
2496 >        checkCompletedNormally(h5, null);
2497 >        for (int i = 0; i < 6; i++) rs[i].assertInvoked();
2498 >    }}
2499  
2500      /**
2501 <     * applyToEitherAsync result completes exceptionally if either source cancelled
2501 >     * runAfterEither result completes exceptionally after exceptional
2502 >     * completion of either source
2503       */
2504 <    public void testApplyToEitherAsync4E() {
2505 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
2506 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
2507 <        CompletableFuture<Integer> g = f.applyToEitherAsync(f2, inc, new ThreadExecutor());
2508 <        assertTrue(f.cancel(true));
2509 <        checkCompletedWithWrappedCancellationException(g);
2504 >    public void testRunAfterEither_exceptionalCompletion() {
2505 >        for (ExecutionMode m : ExecutionMode.values())
2506 >        for (Integer v1 : new Integer[] { 1, null })
2507 >    {
2508 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
2509 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
2510 >        final CFException ex = new CFException();
2511 >        final Noop[] rs = new Noop[6];
2512 >        for (int i = 0; i < rs.length; i++) rs[i] = new Noop(m);
2513 >
2514 >        final CompletableFuture<Void> h0 = m.runAfterEither(f, g, rs[0]);
2515 >        final CompletableFuture<Void> h1 = m.runAfterEither(g, f, rs[1]);
2516 >        checkIncomplete(h0);
2517 >        checkIncomplete(h1);
2518 >        rs[0].assertNotInvoked();
2519 >        rs[1].assertNotInvoked();
2520 >        f.completeExceptionally(ex);
2521 >        checkCompletedWithWrappedException(h0, ex);
2522 >        checkCompletedWithWrappedException(h1, ex);
2523 >        final CompletableFuture<Void> h2 = m.runAfterEither(f, g, rs[2]);
2524 >        final CompletableFuture<Void> h3 = m.runAfterEither(g, f, rs[3]);
2525 >        checkCompletedWithWrappedException(h2, ex);
2526 >        checkCompletedWithWrappedException(h3, ex);
2527 >
2528 >        g.complete(v1);
2529 >
2530 >        // unspecified behavior - both source completions available
2531 >        final CompletableFuture<Void> h4 = m.runAfterEither(f, g, rs[4]);
2532 >        final CompletableFuture<Void> h5 = m.runAfterEither(g, f, rs[5]);
2533 >        try {
2534 >            assertNull(h4.join());
2535 >            rs[4].assertInvoked();
2536 >        } catch (CompletionException ok) {
2537 >            checkCompletedWithWrappedException(h4, ex);
2538 >            rs[4].assertNotInvoked();
2539 >        }
2540 >        try {
2541 >            assertNull(h5.join());
2542 >            rs[5].assertInvoked();
2543 >        } catch (CompletionException ok) {
2544 >            checkCompletedWithWrappedException(h5, ex);
2545 >            rs[5].assertNotInvoked();
2546 >        }
2547  
2548 <        f = new CompletableFuture<Integer>();
2549 <        f2 = new CompletableFuture<Integer>();
2550 <        assertTrue(f2.cancel(true));
2551 <        g = f.applyToEitherAsync(f2, inc, new ThreadExecutor());
2552 <        checkCompletedWithWrappedCancellationException(g);
2553 <    }
2548 >        checkCompletedExceptionally(f, ex);
2549 >        checkCompletedNormally(g, v1);
2550 >        checkCompletedWithWrappedException(h0, ex);
2551 >        checkCompletedWithWrappedException(h1, ex);
2552 >        checkCompletedWithWrappedException(h2, ex);
2553 >        checkCompletedWithWrappedException(h3, ex);
2554 >        checkCompletedWithWrappedException(h4, ex);
2555 >        for (int i = 0; i < 4; i++) rs[i].assertNotInvoked();
2556 >    }}
2557 >
2558 >    public void testRunAfterEither_exceptionalCompletion2() {
2559 >        for (ExecutionMode m : ExecutionMode.values())
2560 >        for (boolean fFirst : new boolean[] { true, false })
2561 >        for (Integer v1 : new Integer[] { 1, null })
2562 >    {
2563 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
2564 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
2565 >        final CFException ex = new CFException();
2566 >        final Noop[] rs = new Noop[6];
2567 >        for (int i = 0; i < rs.length; i++) rs[i] = new Noop(m);
2568 >
2569 >        final CompletableFuture<Void> h0 = m.runAfterEither(f, g, rs[0]);
2570 >        final CompletableFuture<Void> h1 = m.runAfterEither(g, f, rs[1]);
2571 >        if (fFirst) {
2572 >            f.complete(v1);
2573 >            g.completeExceptionally(ex);
2574 >        } else {
2575 >            g.completeExceptionally(ex);
2576 >            f.complete(v1);
2577 >        }
2578 >        final CompletableFuture<Void> h2 = m.runAfterEither(f, g, rs[2]);
2579 >        final CompletableFuture<Void> h3 = m.runAfterEither(g, f, rs[3]);
2580  
2581 <    /**
2582 <     * acceptEitherAsync result completes normally after normal
2583 <     * completion of sources
2584 <     */
2585 <    public void testAcceptEitherAsyncE() {
2586 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
2587 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
2588 <        IncAction r = new IncAction();
2589 <        CompletableFuture<Void> g = f.acceptEitherAsync(f2, r, new ThreadExecutor());
2590 <        f.complete(one);
2591 <        checkCompletedNormally(g, null);
2592 <        assertEquals(r.value, 2);
2581 >        // unspecified behavior - both source completions available
2582 >        try {
2583 >            assertEquals(null, h0.join());
2584 >            rs[0].assertInvoked();
2585 >        } catch (CompletionException ok) {
2586 >            checkCompletedWithWrappedException(h0, ex);
2587 >            rs[0].assertNotInvoked();
2588 >        }
2589 >        try {
2590 >            assertEquals(null, h1.join());
2591 >            rs[1].assertInvoked();
2592 >        } catch (CompletionException ok) {
2593 >            checkCompletedWithWrappedException(h1, ex);
2594 >            rs[1].assertNotInvoked();
2595 >        }
2596 >        try {
2597 >            assertEquals(null, h2.join());
2598 >            rs[2].assertInvoked();
2599 >        } catch (CompletionException ok) {
2600 >            checkCompletedWithWrappedException(h2, ex);
2601 >            rs[2].assertNotInvoked();
2602 >        }
2603 >        try {
2604 >            assertEquals(null, h3.join());
2605 >            rs[3].assertInvoked();
2606 >        } catch (CompletionException ok) {
2607 >            checkCompletedWithWrappedException(h3, ex);
2608 >            rs[3].assertNotInvoked();
2609 >        }
2610  
2611 <        r = new IncAction();
2612 <        f = new CompletableFuture<Integer>();
2613 <        f.complete(one);
2189 <        f2 = new CompletableFuture<Integer>();
2190 <        g = f.acceptEitherAsync(f2, r, new ThreadExecutor());
2191 <        checkCompletedNormally(g, null);
2192 <        assertEquals(r.value, 2);
2193 <    }
2611 >        checkCompletedNormally(f, v1);
2612 >        checkCompletedExceptionally(g, ex);
2613 >    }}
2614  
2615      /**
2616 <     * acceptEitherAsync result completes exceptionally after exceptional
2197 <     * completion of source
2616 >     * runAfterEither result completes exceptionally if either source cancelled
2617       */
2618 <    public void testAcceptEitherAsync2E() {
2619 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
2620 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
2621 <        IncAction r = new IncAction();
2622 <        CompletableFuture<Void> g = f.acceptEitherAsync(f2, r, new ThreadExecutor());
2623 <        f.completeExceptionally(new CFException());
2624 <        checkCompletedWithWrappedCFException(g);
2625 <
2626 <        r = new IncAction();
2627 <        f = new CompletableFuture<Integer>();
2628 <        f2 = new CompletableFuture<Integer>();
2629 <        f2.completeExceptionally(new CFException());
2630 <        g = f.acceptEitherAsync(f2, r, new ThreadExecutor());
2631 <        f.complete(one);
2632 <        checkCompletedWithWrappedCFException(g);
2633 <    }
2618 >    public void testRunAfterEither_sourceCancelled() {
2619 >        for (ExecutionMode m : ExecutionMode.values())
2620 >        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2621 >        for (Integer v1 : new Integer[] { 1, null })
2622 >    {
2623 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
2624 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
2625 >        final Noop[] rs = new Noop[6];
2626 >        for (int i = 0; i < rs.length; i++) rs[i] = new Noop(m);
2627 >
2628 >        final CompletableFuture<Void> h0 = m.runAfterEither(f, g, rs[0]);
2629 >        final CompletableFuture<Void> h1 = m.runAfterEither(g, f, rs[1]);
2630 >        checkIncomplete(h0);
2631 >        checkIncomplete(h1);
2632 >        rs[0].assertNotInvoked();
2633 >        rs[1].assertNotInvoked();
2634 >        f.cancel(mayInterruptIfRunning);
2635 >        checkCompletedWithWrappedCancellationException(h0);
2636 >        checkCompletedWithWrappedCancellationException(h1);
2637 >        final CompletableFuture<Void> h2 = m.runAfterEither(f, g, rs[2]);
2638 >        final CompletableFuture<Void> h3 = m.runAfterEither(g, f, rs[3]);
2639 >        checkCompletedWithWrappedCancellationException(h2);
2640 >        checkCompletedWithWrappedCancellationException(h3);
2641 >
2642 >        g.complete(v1);
2643 >
2644 >        // unspecified behavior - both source completions available
2645 >        final CompletableFuture<Void> h4 = m.runAfterEither(f, g, rs[4]);
2646 >        final CompletableFuture<Void> h5 = m.runAfterEither(g, f, rs[5]);
2647 >        try {
2648 >            assertNull(h4.join());
2649 >            rs[4].assertInvoked();
2650 >        } catch (CompletionException ok) {
2651 >            checkCompletedWithWrappedCancellationException(h4);
2652 >            rs[4].assertNotInvoked();
2653 >        }
2654 >        try {
2655 >            assertNull(h5.join());
2656 >            rs[5].assertInvoked();
2657 >        } catch (CompletionException ok) {
2658 >            checkCompletedWithWrappedCancellationException(h5);
2659 >            rs[5].assertNotInvoked();
2660 >        }
2661  
2662 <    /**
2663 <     * acceptEitherAsync result completes exceptionally if action does
2664 <     */
2665 <    public void testAcceptEitherAsync3E() {
2666 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
2667 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
2668 <        FailingConsumer r = new FailingConsumer();
2669 <        CompletableFuture<Void> g = f.acceptEitherAsync(f2, r, new ThreadExecutor());
2224 <        f.complete(one);
2225 <        checkCompletedWithWrappedCFException(g);
2226 <    }
2662 >        checkCancelled(f);
2663 >        checkCompletedNormally(g, v1);
2664 >        checkCompletedWithWrappedCancellationException(h0);
2665 >        checkCompletedWithWrappedCancellationException(h1);
2666 >        checkCompletedWithWrappedCancellationException(h2);
2667 >        checkCompletedWithWrappedCancellationException(h3);
2668 >        for (int i = 0; i < 4; i++) rs[i].assertNotInvoked();
2669 >    }}
2670  
2671      /**
2672 <     * acceptEitherAsync result completes exceptionally if either
2230 <     * source cancelled
2672 >     * runAfterEither result completes exceptionally if action does
2673       */
2674 <    public void testAcceptEitherAsync4E() {
2675 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
2676 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
2677 <        IncAction r = new IncAction();
2678 <        CompletableFuture<Void> g = f.acceptEitherAsync(f2, r, new ThreadExecutor());
2679 <        assertTrue(f.cancel(true));
2680 <        checkCompletedWithWrappedCancellationException(g);
2681 <
2682 <        r = new IncAction();
2683 <        f = new CompletableFuture<Integer>();
2684 <        f2 = new CompletableFuture<Integer>();
2685 <        assertTrue(f2.cancel(true));
2686 <        g = f.acceptEitherAsync(f2, r, new ThreadExecutor());
2687 <        checkCompletedWithWrappedCancellationException(g);
2688 <    }
2674 >    public void testRunAfterEither_actionFailed() {
2675 >        for (ExecutionMode m : ExecutionMode.values())
2676 >        for (Integer v1 : new Integer[] { 1, null })
2677 >        for (Integer v2 : new Integer[] { 2, null })
2678 >    {
2679 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
2680 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
2681 >        final FailingRunnable[] rs = new FailingRunnable[6];
2682 >        for (int i = 0; i < rs.length; i++) rs[i] = new FailingRunnable(m);
2683 >
2684 >        final CompletableFuture<Void> h0 = m.runAfterEither(f, g, rs[0]);
2685 >        final CompletableFuture<Void> h1 = m.runAfterEither(g, f, rs[1]);
2686 >        f.complete(v1);
2687 >        final CompletableFuture<Void> h2 = m.runAfterEither(f, g, rs[2]);
2688 >        final CompletableFuture<Void> h3 = m.runAfterEither(g, f, rs[3]);
2689 >        checkCompletedWithWrappedCFException(h0);
2690 >        checkCompletedWithWrappedCFException(h1);
2691 >        checkCompletedWithWrappedCFException(h2);
2692 >        checkCompletedWithWrappedCFException(h3);
2693 >        for (int i = 0; i < 4; i++) rs[i].assertInvoked();
2694 >        g.complete(v2);
2695 >        final CompletableFuture<Void> h4 = m.runAfterEither(f, g, rs[4]);
2696 >        final CompletableFuture<Void> h5 = m.runAfterEither(g, f, rs[5]);
2697 >        checkCompletedWithWrappedCFException(h4);
2698 >        checkCompletedWithWrappedCFException(h5);
2699 >
2700 >        checkCompletedNormally(f, v1);
2701 >        checkCompletedNormally(g, v2);
2702 >        for (int i = 0; i < 6; i++) rs[i].assertInvoked();
2703 >    }}
2704  
2705      /**
2706 <     * runAfterEitherAsync result completes normally after normal
2250 <     * completion of sources
2706 >     * thenCompose result completes normally after normal completion of source
2707       */
2708 <    public void testRunAfterEitherAsyncE() {
2709 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
2710 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
2711 <        Noop r = new Noop();
2712 <        CompletableFuture<Void> g = f.runAfterEitherAsync(f2, r, new ThreadExecutor());
2713 <        f.complete(one);
2714 <        checkCompletedNormally(g, null);
2715 <        assertTrue(r.ran);
2716 <
2717 <        r = new Noop();
2718 <        f = new CompletableFuture<Integer>();
2719 <        f.complete(one);
2720 <        f2 = new CompletableFuture<Integer>();
2721 <        g = f.runAfterEitherAsync(f2, r, new ThreadExecutor());
2722 <        checkCompletedNormally(g, null);
2267 <        assertTrue(r.ran);
2268 <    }
2708 >    public void testThenCompose_normalCompletion() {
2709 >        for (ExecutionMode m : ExecutionMode.values())
2710 >        for (boolean createIncomplete : new boolean[] { true, false })
2711 >        for (Integer v1 : new Integer[] { 1, null })
2712 >    {
2713 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
2714 >        final CompletableFutureInc r = new CompletableFutureInc(m);
2715 >        if (!createIncomplete) f.complete(v1);
2716 >        final CompletableFuture<Integer> g = m.thenCompose(f, r);
2717 >        if (createIncomplete) f.complete(v1);
2718 >
2719 >        checkCompletedNormally(g, inc(v1));
2720 >        checkCompletedNormally(f, v1);
2721 >        r.assertValue(v1);
2722 >    }}
2723  
2724      /**
2725 <     * runAfterEitherAsync result completes exceptionally after exceptional
2725 >     * thenCompose result completes exceptionally after exceptional
2726       * completion of source
2727       */
2728 <    public void testRunAfterEitherAsync2E() {
2729 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
2730 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
2731 <        Noop r = new Noop();
2732 <        CompletableFuture<Void> g = f.runAfterEitherAsync(f2, r, new ThreadExecutor());
2733 <        f.completeExceptionally(new CFException());
2734 <        checkCompletedWithWrappedCFException(g);
2735 <
2736 <        r = new Noop();
2737 <        f = new CompletableFuture<Integer>();
2738 <        f2 = new CompletableFuture<Integer>();
2739 <        f2.completeExceptionally(new CFException());
2740 <        g = f.runAfterEitherAsync(f2, r, new ThreadExecutor());
2741 <        f.complete(one);
2742 <        checkCompletedWithWrappedCFException(g);
2289 <    }
2290 <
2291 <    /**
2292 <     * runAfterEitherAsync result completes exceptionally if action does
2293 <     */
2294 <    public void testRunAfterEitherAsync3E() {
2295 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
2296 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
2297 <        FailingNoop r = new FailingNoop();
2298 <        CompletableFuture<Void> g = f.runAfterEitherAsync(f2, r, new ThreadExecutor());
2299 <        f.complete(one);
2300 <        checkCompletedWithWrappedCFException(g);
2301 <    }
2302 <
2303 <    /**
2304 <     * runAfterEitherAsync result completes exceptionally if either
2305 <     * source cancelled
2306 <     */
2307 <    public void testRunAfterEitherAsync4E() {
2308 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
2309 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
2310 <        Noop r = new Noop();
2311 <        CompletableFuture<Void> g = f.runAfterEitherAsync(f2, r, new ThreadExecutor());
2312 <        assertTrue(f.cancel(true));
2313 <        checkCompletedWithWrappedCancellationException(g);
2314 <
2315 <        r = new Noop();
2316 <        f = new CompletableFuture<Integer>();
2317 <        f2 = new CompletableFuture<Integer>();
2318 <        assertTrue(f2.cancel(true));
2319 <        g = f.runAfterEitherAsync(f2, r, new ThreadExecutor());
2320 <        checkCompletedWithWrappedCancellationException(g);
2321 <    }
2728 >    public void testThenCompose_exceptionalCompletion() {
2729 >        for (ExecutionMode m : ExecutionMode.values())
2730 >        for (boolean createIncomplete : new boolean[] { true, false })
2731 >    {
2732 >        final CFException ex = new CFException();
2733 >        final CompletableFutureInc r = new CompletableFutureInc(m);
2734 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
2735 >        if (!createIncomplete) f.completeExceptionally(ex);
2736 >        final CompletableFuture<Integer> g = m.thenCompose(f, r);
2737 >        if (createIncomplete) f.completeExceptionally(ex);
2738 >
2739 >        checkCompletedWithWrappedException(g, ex);
2740 >        checkCompletedExceptionally(f, ex);
2741 >        r.assertNotInvoked();
2742 >    }}
2743  
2744      /**
2745 <     * thenComposeAsync result completes normally after normal
2325 <     * completion of source
2745 >     * thenCompose result completes exceptionally if action does
2746       */
2747 <    public void testThenComposeAsyncE() {
2748 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
2749 <        CompletableFutureInc r = new CompletableFutureInc();
2750 <        CompletableFuture<Integer> g = f.thenComposeAsync(r, new ThreadExecutor());
2751 <        f.complete(one);
2752 <        checkCompletedNormally(g, two);
2753 <    }
2747 >    public void testThenCompose_actionFailed() {
2748 >        for (ExecutionMode m : ExecutionMode.values())
2749 >        for (boolean createIncomplete : new boolean[] { true, false })
2750 >        for (Integer v1 : new Integer[] { 1, null })
2751 >    {
2752 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
2753 >        final FailingCompletableFutureFunction r
2754 >            = new FailingCompletableFutureFunction(m);
2755 >        if (!createIncomplete) f.complete(v1);
2756 >        final CompletableFuture<Integer> g = m.thenCompose(f, r);
2757 >        if (createIncomplete) f.complete(v1);
2758  
2335    /**
2336     * thenComposeAsync result completes exceptionally after
2337     * exceptional completion of source
2338     */
2339    public void testThenComposeAsync2E() {
2340        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
2341        CompletableFutureInc r = new CompletableFutureInc();
2342        CompletableFuture<Integer> g = f.thenComposeAsync(r, new ThreadExecutor());
2343        f.completeExceptionally(new CFException());
2759          checkCompletedWithWrappedCFException(g);
2760 <    }
2760 >        checkCompletedNormally(f, v1);
2761 >    }}
2762  
2763      /**
2764 <     * thenComposeAsync result completes exceptionally if action does
2764 >     * thenCompose result completes exceptionally if source cancelled
2765       */
2766 <    public void testThenComposeAsync3E() {
2767 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
2768 <        FailingCompletableFutureFunction r = new FailingCompletableFutureFunction();
2769 <        CompletableFuture<Integer> g = f.thenComposeAsync(r, new ThreadExecutor());
2770 <        f.complete(one);
2771 <        checkCompletedWithWrappedCFException(g);
2772 <    }
2766 >    public void testThenCompose_sourceCancelled() {
2767 >        for (ExecutionMode m : ExecutionMode.values())
2768 >        for (boolean createIncomplete : new boolean[] { true, false })
2769 >        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2770 >    {
2771 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
2772 >        final CompletableFutureInc r = new CompletableFutureInc(m);
2773 >        if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
2774 >        final CompletableFuture<Integer> g = m.thenCompose(f, r);
2775 >        if (createIncomplete) {
2776 >            checkIncomplete(g);
2777 >            assertTrue(f.cancel(mayInterruptIfRunning));
2778 >        }
2779  
2358    /**
2359     * thenComposeAsync result completes exceptionally if source cancelled
2360     */
2361    public void testThenComposeAsync4E() {
2362        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
2363        CompletableFutureInc r = new CompletableFutureInc();
2364        CompletableFuture<Integer> g = f.thenComposeAsync(r, new ThreadExecutor());
2365        assertTrue(f.cancel(true));
2780          checkCompletedWithWrappedCancellationException(g);
2781 <    }
2781 >        checkCancelled(f);
2782 >    }}
2783  
2784      // other static methods
2785  
# Line 2373 | Line 2788 | public class CompletableFutureTest exten
2788       * with the value null
2789       */
2790      public void testAllOf_empty() throws Exception {
2791 <        CompletableFuture<?> f = CompletableFuture.allOf();
2791 >        CompletableFuture<Void> f = CompletableFuture.allOf();
2792          checkCompletedNormally(f, null);
2793      }
2794  
2795      /**
2796 <     * allOf returns a future completed when all components complete
2796 >     * allOf returns a future completed normally with the value null
2797 >     * when all components complete normally
2798       */
2799 <    public void testAllOf() throws Exception {
2799 >    public void testAllOf_normal() throws Exception {
2800          for (int k = 1; k < 20; ++k) {
2801 <            CompletableFuture[] fs = new CompletableFuture[k];
2801 >            CompletableFuture<Integer>[] fs
2802 >                = (CompletableFuture<Integer>[]) new CompletableFuture[k];
2803              for (int i = 0; i < k; ++i)
2804 <                fs[i] = new CompletableFuture<Integer>();
2804 >                fs[i] = new CompletableFuture<>();
2805              CompletableFuture<Void> f = CompletableFuture.allOf(fs);
2806              for (int i = 0; i < k; ++i) {
2807                  checkIncomplete(f);
2808 +                checkIncomplete(CompletableFuture.allOf(fs));
2809 +                fs[i].complete(one);
2810 +            }
2811 +            checkCompletedNormally(f, null);
2812 +            checkCompletedNormally(CompletableFuture.allOf(fs), null);
2813 +        }
2814 +    }
2815 +
2816 +    public void testAllOf_backwards() throws Exception {
2817 +        for (int k = 1; k < 20; ++k) {
2818 +            CompletableFuture<Integer>[] fs
2819 +                = (CompletableFuture<Integer>[]) new CompletableFuture[k];
2820 +            for (int i = 0; i < k; ++i)
2821 +                fs[i] = new CompletableFuture<>();
2822 +            CompletableFuture<Void> f = CompletableFuture.allOf(fs);
2823 +            for (int i = k - 1; i >= 0; i--) {
2824 +                checkIncomplete(f);
2825 +                checkIncomplete(CompletableFuture.allOf(fs));
2826                  fs[i].complete(one);
2827              }
2828              checkCompletedNormally(f, null);
2829 +            checkCompletedNormally(CompletableFuture.allOf(fs), null);
2830          }
2831      }
2832  
# Line 2398 | Line 2834 | public class CompletableFutureTest exten
2834       * anyOf(no component futures) returns an incomplete future
2835       */
2836      public void testAnyOf_empty() throws Exception {
2837 <        CompletableFuture<?> f = CompletableFuture.anyOf();
2837 >        CompletableFuture<Object> f = CompletableFuture.anyOf();
2838          checkIncomplete(f);
2839      }
2840  
2841      /**
2842 <     * anyOf returns a future completed when any components complete
2842 >     * anyOf returns a future completed normally with a value when
2843 >     * a component future does
2844       */
2845 <    public void testAnyOf() throws Exception {
2846 <        for (int k = 1; k < 20; ++k) {
2845 >    public void testAnyOf_normal() throws Exception {
2846 >        for (int k = 0; k < 10; ++k) {
2847              CompletableFuture[] fs = new CompletableFuture[k];
2848              for (int i = 0; i < k; ++i)
2849 <                fs[i] = new CompletableFuture<Integer>();
2849 >                fs[i] = new CompletableFuture<>();
2850              CompletableFuture<Object> f = CompletableFuture.anyOf(fs);
2851              checkIncomplete(f);
2852              for (int i = 0; i < k; ++i) {
2853                  fs[i].complete(one);
2854                  checkCompletedNormally(f, one);
2855 +                checkCompletedNormally(CompletableFuture.anyOf(fs), one);
2856 +            }
2857 +        }
2858 +    }
2859 +
2860 +    /**
2861 +     * anyOf result completes exceptionally when any component does.
2862 +     */
2863 +    public void testAnyOf_exceptional() throws Exception {
2864 +        for (int k = 0; k < 10; ++k) {
2865 +            CompletableFuture[] fs = new CompletableFuture[k];
2866 +            for (int i = 0; i < k; ++i)
2867 +                fs[i] = new CompletableFuture<>();
2868 +            CompletableFuture<Object> f = CompletableFuture.anyOf(fs);
2869 +            checkIncomplete(f);
2870 +            for (int i = 0; i < k; ++i) {
2871 +                fs[i].completeExceptionally(new CFException());
2872 +                checkCompletedWithWrappedCFException(f);
2873 +                checkCompletedWithWrappedCFException(CompletableFuture.anyOf(fs));
2874              }
2875          }
2876      }
# Line 2423 | Line 2879 | public class CompletableFutureTest exten
2879       * Completion methods throw NullPointerException with null arguments
2880       */
2881      public void testNPE() {
2882 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
2883 <        CompletableFuture<Integer> g = new CompletableFuture<Integer>();
2882 >        CompletableFuture<Integer> f = new CompletableFuture<>();
2883 >        CompletableFuture<Integer> g = new CompletableFuture<>();
2884          CompletableFuture<Integer> nullFuture = (CompletableFuture<Integer>)null;
2885          CompletableFuture<?> h;
2886          ThreadExecutor exec = new ThreadExecutor();
2887  
2888          Runnable[] throwingActions = {
2889 <            () -> { CompletableFuture.supplyAsync(null); },
2890 <            () -> { CompletableFuture.supplyAsync(null, exec); },
2891 <            () -> { CompletableFuture.supplyAsync(supplyOne, null); },
2892 <
2893 <            () -> { CompletableFuture.runAsync(null); },
2894 <            () -> { CompletableFuture.runAsync(null, exec); },
2895 <            () -> { CompletableFuture.runAsync(() -> {}, null); },
2896 <
2897 <            () -> { f.completeExceptionally(null); },
2898 <
2899 <            () -> { f.thenApply(null); },
2900 <            () -> { f.thenApplyAsync(null); },
2901 <            () -> { f.thenApplyAsync((x) -> x, null); },
2902 <            () -> { f.thenApplyAsync(null, exec); },
2903 <
2904 <            () -> { f.thenAccept(null); },
2905 <            () -> { f.thenAcceptAsync(null); },
2906 <            () -> { f.thenAcceptAsync((x) -> { ; }, null); },
2907 <            () -> { f.thenAcceptAsync(null, exec); },
2908 <
2909 <            () -> { f.thenRun(null); },
2910 <            () -> { f.thenRunAsync(null); },
2911 <            () -> { f.thenRunAsync(() -> { ; }, null); },
2912 <            () -> { f.thenRunAsync(null, exec); },
2913 <
2914 <            () -> { f.thenCombine(g, null); },
2915 <            () -> { f.thenCombineAsync(g, null); },
2916 <            () -> { f.thenCombineAsync(g, null, exec); },
2917 <            () -> { f.thenCombine(nullFuture, (x, y) -> x); },
2918 <            () -> { f.thenCombineAsync(nullFuture, (x, y) -> x); },
2919 <            () -> { f.thenCombineAsync(nullFuture, (x, y) -> x, exec); },
2920 <            () -> { f.thenCombineAsync(g, (x, y) -> x, null); },
2921 <
2922 <            () -> { f.thenAcceptBoth(g, null); },
2923 <            () -> { f.thenAcceptBothAsync(g, null); },
2924 <            () -> { f.thenAcceptBothAsync(g, null, exec); },
2925 <            () -> { f.thenAcceptBoth(nullFuture, (x, y) -> {}); },
2926 <            () -> { f.thenAcceptBothAsync(nullFuture, (x, y) -> {}); },
2927 <            () -> { f.thenAcceptBothAsync(nullFuture, (x, y) -> {}, exec); },
2928 <            () -> { f.thenAcceptBothAsync(g, (x, y) -> {}, null); },
2929 <
2930 <            () -> { f.runAfterBoth(g, null); },
2931 <            () -> { f.runAfterBothAsync(g, null); },
2932 <            () -> { f.runAfterBothAsync(g, null, exec); },
2933 <            () -> { f.runAfterBoth(nullFuture, () -> {}); },
2934 <            () -> { f.runAfterBothAsync(nullFuture, () -> {}); },
2935 <            () -> { f.runAfterBothAsync(nullFuture, () -> {}, exec); },
2936 <            () -> { f.runAfterBothAsync(g, () -> {}, null); },
2937 <
2938 <            () -> { f.applyToEither(g, null); },
2939 <            () -> { f.applyToEitherAsync(g, null); },
2940 <            () -> { f.applyToEitherAsync(g, null, exec); },
2941 <            () -> { f.applyToEither(nullFuture, (x) -> x); },
2942 <            () -> { f.applyToEitherAsync(nullFuture, (x) -> x); },
2943 <            () -> { f.applyToEitherAsync(nullFuture, (x) -> x, exec); },
2944 <            () -> { f.applyToEitherAsync(g, (x) -> x, null); },
2945 <
2946 <            () -> { f.acceptEither(g, null); },
2947 <            () -> { f.acceptEitherAsync(g, null); },
2948 <            () -> { f.acceptEitherAsync(g, null, exec); },
2949 <            () -> { f.acceptEither(nullFuture, (x) -> {}); },
2950 <            () -> { f.acceptEitherAsync(nullFuture, (x) -> {}); },
2951 <            () -> { f.acceptEitherAsync(nullFuture, (x) -> {}, exec); },
2952 <            () -> { f.acceptEitherAsync(g, (x) -> {}, null); },
2953 <
2954 <            () -> { f.runAfterEither(g, null); },
2955 <            () -> { f.runAfterEitherAsync(g, null); },
2956 <            () -> { f.runAfterEitherAsync(g, null, exec); },
2957 <            () -> { f.runAfterEither(nullFuture, () -> {}); },
2958 <            () -> { f.runAfterEitherAsync(nullFuture, () -> {}); },
2959 <            () -> { f.runAfterEitherAsync(nullFuture, () -> {}, exec); },
2960 <            () -> { f.runAfterEitherAsync(g, () -> {}, null); },
2961 <
2962 <            () -> { f.thenCompose(null); },
2963 <            () -> { f.thenComposeAsync(null); },
2964 <            () -> { f.thenComposeAsync(new CompletableFutureInc(), null); },
2965 <            () -> { f.thenComposeAsync(null, exec); },
2966 <
2967 <            () -> { f.exceptionally(null); },
2968 <
2969 <            () -> { f.handle(null); },
2970 <
2971 <            () -> { CompletableFuture.allOf((CompletableFuture<?>)null); },
2972 <            () -> { CompletableFuture.allOf((CompletableFuture<?>[])null); },
2973 <            () -> { CompletableFuture.allOf(f, null); },
2974 <            () -> { CompletableFuture.allOf(null, f); },
2975 <
2976 <            () -> { CompletableFuture.anyOf((CompletableFuture<?>)null); },
2977 <            () -> { CompletableFuture.anyOf((CompletableFuture<?>[])null); },
2978 <            () -> { CompletableFuture.anyOf(f, null); },
2979 <            () -> { CompletableFuture.anyOf(null, f); },
2889 >            () -> CompletableFuture.supplyAsync(null),
2890 >            () -> CompletableFuture.supplyAsync(null, exec),
2891 >            () -> CompletableFuture.supplyAsync(new IntegerSupplier(ExecutionMode.DEFAULT, 42), null),
2892 >
2893 >            () -> CompletableFuture.runAsync(null),
2894 >            () -> CompletableFuture.runAsync(null, exec),
2895 >            () -> CompletableFuture.runAsync(() -> {}, null),
2896 >
2897 >            () -> f.completeExceptionally(null),
2898 >
2899 >            () -> f.thenApply(null),
2900 >            () -> f.thenApplyAsync(null),
2901 >            () -> f.thenApplyAsync((x) -> x, null),
2902 >            () -> f.thenApplyAsync(null, exec),
2903 >
2904 >            () -> f.thenAccept(null),
2905 >            () -> f.thenAcceptAsync(null),
2906 >            () -> f.thenAcceptAsync((x) -> {} , null),
2907 >            () -> f.thenAcceptAsync(null, exec),
2908 >
2909 >            () -> f.thenRun(null),
2910 >            () -> f.thenRunAsync(null),
2911 >            () -> f.thenRunAsync(() -> {} , null),
2912 >            () -> f.thenRunAsync(null, exec),
2913 >
2914 >            () -> f.thenCombine(g, null),
2915 >            () -> f.thenCombineAsync(g, null),
2916 >            () -> f.thenCombineAsync(g, null, exec),
2917 >            () -> f.thenCombine(nullFuture, (x, y) -> x),
2918 >            () -> f.thenCombineAsync(nullFuture, (x, y) -> x),
2919 >            () -> f.thenCombineAsync(nullFuture, (x, y) -> x, exec),
2920 >            () -> f.thenCombineAsync(g, (x, y) -> x, null),
2921 >
2922 >            () -> f.thenAcceptBoth(g, null),
2923 >            () -> f.thenAcceptBothAsync(g, null),
2924 >            () -> f.thenAcceptBothAsync(g, null, exec),
2925 >            () -> f.thenAcceptBoth(nullFuture, (x, y) -> {}),
2926 >            () -> f.thenAcceptBothAsync(nullFuture, (x, y) -> {}),
2927 >            () -> f.thenAcceptBothAsync(nullFuture, (x, y) -> {}, exec),
2928 >            () -> f.thenAcceptBothAsync(g, (x, y) -> {}, null),
2929 >
2930 >            () -> f.runAfterBoth(g, null),
2931 >            () -> f.runAfterBothAsync(g, null),
2932 >            () -> f.runAfterBothAsync(g, null, exec),
2933 >            () -> f.runAfterBoth(nullFuture, () -> {}),
2934 >            () -> f.runAfterBothAsync(nullFuture, () -> {}),
2935 >            () -> f.runAfterBothAsync(nullFuture, () -> {}, exec),
2936 >            () -> f.runAfterBothAsync(g, () -> {}, null),
2937 >
2938 >            () -> f.applyToEither(g, null),
2939 >            () -> f.applyToEitherAsync(g, null),
2940 >            () -> f.applyToEitherAsync(g, null, exec),
2941 >            () -> f.applyToEither(nullFuture, (x) -> x),
2942 >            () -> f.applyToEitherAsync(nullFuture, (x) -> x),
2943 >            () -> f.applyToEitherAsync(nullFuture, (x) -> x, exec),
2944 >            () -> f.applyToEitherAsync(g, (x) -> x, null),
2945 >
2946 >            () -> f.acceptEither(g, null),
2947 >            () -> f.acceptEitherAsync(g, null),
2948 >            () -> f.acceptEitherAsync(g, null, exec),
2949 >            () -> f.acceptEither(nullFuture, (x) -> {}),
2950 >            () -> f.acceptEitherAsync(nullFuture, (x) -> {}),
2951 >            () -> f.acceptEitherAsync(nullFuture, (x) -> {}, exec),
2952 >            () -> f.acceptEitherAsync(g, (x) -> {}, null),
2953 >
2954 >            () -> f.runAfterEither(g, null),
2955 >            () -> f.runAfterEitherAsync(g, null),
2956 >            () -> f.runAfterEitherAsync(g, null, exec),
2957 >            () -> f.runAfterEither(nullFuture, () -> {}),
2958 >            () -> f.runAfterEitherAsync(nullFuture, () -> {}),
2959 >            () -> f.runAfterEitherAsync(nullFuture, () -> {}, exec),
2960 >            () -> f.runAfterEitherAsync(g, () -> {}, null),
2961 >
2962 >            () -> f.thenCompose(null),
2963 >            () -> f.thenComposeAsync(null),
2964 >            () -> f.thenComposeAsync(new CompletableFutureInc(ExecutionMode.EXECUTOR), null),
2965 >            () -> f.thenComposeAsync(null, exec),
2966 >
2967 >            () -> f.exceptionally(null),
2968 >
2969 >            () -> f.handle(null),
2970 >
2971 >            () -> CompletableFuture.allOf((CompletableFuture<?>)null),
2972 >            () -> CompletableFuture.allOf((CompletableFuture<?>[])null),
2973 >            () -> CompletableFuture.allOf(f, null),
2974 >            () -> CompletableFuture.allOf(null, f),
2975 >
2976 >            () -> CompletableFuture.anyOf((CompletableFuture<?>)null),
2977 >            () -> CompletableFuture.anyOf((CompletableFuture<?>[])null),
2978 >            () -> CompletableFuture.anyOf(f, null),
2979 >            () -> CompletableFuture.anyOf(null, f),
2980 >
2981 >            () -> f.obtrudeException(null),
2982          };
2983  
2984          assertThrows(NullPointerException.class, throwingActions);
2985          assertEquals(0, exec.count.get());
2986      }
2987  
2988 +    /**
2989 +     * toCompletableFuture returns this CompletableFuture.
2990 +     */
2991 +    public void testToCompletableFuture() {
2992 +        CompletableFuture<Integer> f = new CompletableFuture<>();
2993 +        assertSame(f, f.toCompletableFuture());
2994 +    }
2995 +
2996   }

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