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Comparing jsr166/src/test/tck/CompletableFutureTest.java (file contents):
Revision 1.7 by jsr166, Fri Mar 22 16:29:42 2013 UTC vs.
Revision 1.98 by jsr166, Wed Dec 31 19:05:42 2014 UTC

# Line 5 | Line 5
5   * http://creativecommons.org/publicdomain/zero/1.0/
6   */
7  
8 < import junit.framework.*;
8 > import static java.util.concurrent.TimeUnit.MILLISECONDS;
9 > import static java.util.concurrent.TimeUnit.SECONDS;
10 >
11 > import java.util.ArrayList;
12 > import java.util.List;
13 > import java.util.Objects;
14   import java.util.concurrent.Callable;
10 import java.util.concurrent.Executor;
11 import java.util.concurrent.ExecutorService;
12 import java.util.concurrent.Executors;
15   import java.util.concurrent.CancellationException;
14 import java.util.concurrent.CountDownLatch;
15 import java.util.concurrent.ExecutionException;
16 import java.util.concurrent.Future;
16   import java.util.concurrent.CompletableFuture;
17   import java.util.concurrent.CompletionException;
18 + import java.util.concurrent.CompletionStage;
19 + import java.util.concurrent.ExecutionException;
20 + import java.util.concurrent.Executor;
21 + import java.util.concurrent.ForkJoinPool;
22 + import java.util.concurrent.ForkJoinTask;
23   import java.util.concurrent.TimeoutException;
24   import java.util.concurrent.atomic.AtomicInteger;
21 import static java.util.concurrent.TimeUnit.MILLISECONDS;
22 import static java.util.concurrent.TimeUnit.SECONDS;
23 import java.util.*;
24 import java.util.function.Supplier;
25 import java.util.function.Consumer;
25   import java.util.function.BiConsumer;
27 import java.util.function.Function;
26   import java.util.function.BiFunction;
27 + import java.util.function.Consumer;
28 + import java.util.function.Function;
29 + import java.util.function.Supplier;
30 +
31 + import junit.framework.Test;
32 + import junit.framework.TestSuite;
33  
34   public class CompletableFutureTest extends JSR166TestCase {
35  
# Line 53 | Line 57 | public class CompletableFutureTest exten
57          catch (Throwable fail) { threadUnexpectedException(fail); }
58      }
59  
60 <    void checkCompletedNormally(CompletableFuture<?> f, Object value) {
60 >    <T> void checkCompletedNormally(CompletableFuture<T> f, T value) {
61 >        checkTimedGet(f, value);
62 >
63          try {
64              assertEquals(value, f.join());
65          } catch (Throwable fail) { threadUnexpectedException(fail); }
# 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 +        long startTime = System.nanoTime();
80 +        long timeoutMillis = LONG_DELAY_MS;
81 +        try {
82 +            f.get(timeoutMillis, MILLISECONDS);
83 +            shouldThrow();
84 +        } catch (ExecutionException success) {
85 +            assertTrue(success.getCause() instanceof CFException);
86 +        } catch (Throwable fail) { threadUnexpectedException(fail); }
87 +        assertTrue(millisElapsedSince(startTime) < timeoutMillis/2);
88 +
89          try {
90              f.join();
91              shouldThrow();
92 <        } catch (Throwable ex) {
93 <            assertTrue(ex instanceof CompletionException &&
80 <                       ((CompletionException)ex).getCause() instanceof CFException);
92 >        } catch (CompletionException success) {
93 >            assertTrue(success.getCause() instanceof CFException);
94          }
95          try {
96              f.getNow(null);
97              shouldThrow();
98 <        } catch (Throwable ex) {
99 <            assertTrue(ex instanceof CompletionException &&
87 <                       ((CompletionException)ex).getCause() instanceof CFException);
98 >        } catch (CompletionException success) {
99 >            assertTrue(success.getCause() instanceof CFException);
100          }
101          try {
102              f.get();
103              shouldThrow();
104 <        } catch (Throwable ex) {
105 <            assertTrue(ex instanceof ExecutionException &&
106 <                       ((ExecutionException)ex).getCause() instanceof CFException);
104 >        } catch (ExecutionException success) {
105 >            assertTrue(success.getCause() instanceof CFException);
106 >        } catch (Throwable fail) { threadUnexpectedException(fail); }
107 >        assertTrue(f.isDone());
108 >        assertFalse(f.isCancelled());
109 >        assertTrue(f.toString().contains("[Completed exceptionally]"));
110 >    }
111 >
112 >    <U> void checkCompletedExceptionallyWithRootCause(CompletableFuture<U> f,
113 >                                                      Throwable ex) {
114 >        long startTime = System.nanoTime();
115 >        long timeoutMillis = LONG_DELAY_MS;
116 >        try {
117 >            f.get(timeoutMillis, MILLISECONDS);
118 >            shouldThrow();
119 >        } catch (ExecutionException success) {
120 >            assertSame(ex, success.getCause());
121 >        } catch (Throwable fail) { threadUnexpectedException(fail); }
122 >        assertTrue(millisElapsedSince(startTime) < timeoutMillis/2);
123 >
124 >        try {
125 >            f.join();
126 >            shouldThrow();
127 >        } catch (CompletionException success) {
128 >            assertSame(ex, success.getCause());
129          }
130          try {
131 <            f.get(0L, SECONDS);
131 >            f.getNow(null);
132              shouldThrow();
133 <        } catch (Throwable ex) {
134 <            assertTrue(ex instanceof ExecutionException &&
101 <                       ((ExecutionException)ex).getCause() instanceof CFException);
133 >        } catch (CompletionException success) {
134 >            assertSame(ex, success.getCause());
135          }
136 +        try {
137 +            f.get();
138 +            shouldThrow();
139 +        } catch (ExecutionException success) {
140 +            assertSame(ex, success.getCause());
141 +        } catch (Throwable fail) { threadUnexpectedException(fail); }
142 +
143          assertTrue(f.isDone());
144          assertFalse(f.isCancelled());
145 +        assertTrue(f.toString().contains("[Completed exceptionally]"));
146 +    }
147 +
148 +    <U> void checkCompletedWithWrappedException(CompletableFuture<U> f,
149 +                                                Throwable ex) {
150 +        checkCompletedExceptionallyWithRootCause(f, ex);
151 +        try {
152 +            CompletableFuture<Throwable> spy = f.handle
153 +                ((U u, Throwable t) -> t);
154 +            assertTrue(spy.join() instanceof CompletionException);
155 +            assertSame(ex, spy.join().getCause());
156 +        } catch (Throwable fail) { threadUnexpectedException(fail); }
157 +    }
158 +
159 +    <U> void checkCompletedExceptionally(CompletableFuture<U> f, Throwable ex) {
160 +        checkCompletedExceptionallyWithRootCause(f, ex);
161 +        try {
162 +            CompletableFuture<Throwable> spy = f.handle
163 +                ((U u, Throwable t) -> t);
164 +            assertSame(ex, spy.join());
165 +        } catch (Throwable fail) { threadUnexpectedException(fail); }
166      }
167  
168      void checkCancelled(CompletableFuture<?> f) {
169 +        long startTime = System.nanoTime();
170 +        long timeoutMillis = LONG_DELAY_MS;
171 +        try {
172 +            f.get(timeoutMillis, MILLISECONDS);
173 +            shouldThrow();
174 +        } catch (CancellationException success) {
175 +        } catch (Throwable fail) { threadUnexpectedException(fail); }
176 +        assertTrue(millisElapsedSince(startTime) < timeoutMillis/2);
177 +
178          try {
179              f.join();
180              shouldThrow();
181 <        } catch (Throwable ex) {
112 <            assertTrue(ex instanceof CancellationException);
113 <        }
181 >        } catch (CancellationException success) {}
182          try {
183              f.getNow(null);
184              shouldThrow();
185 <        } catch (Throwable ex) {
118 <            assertTrue(ex instanceof CancellationException);
119 <        }
185 >        } catch (CancellationException success) {}
186          try {
187              f.get();
188              shouldThrow();
189 <        } catch (Throwable ex) {
190 <            assertTrue(ex instanceof CancellationException);
125 <        }
126 <        try {
127 <            f.get(0L, SECONDS);
128 <            shouldThrow();
129 <        } catch (Throwable ex) {
130 <            assertTrue(ex instanceof CancellationException);
131 <        }
189 >        } catch (CancellationException success) {
190 >        } catch (Throwable fail) { threadUnexpectedException(fail); }
191          assertTrue(f.isDone());
192 +        assertTrue(f.isCompletedExceptionally());
193          assertTrue(f.isCancelled());
194 +        assertTrue(f.toString().contains("[Completed exceptionally]"));
195      }
196  
197      void checkCompletedWithWrappedCancellationException(CompletableFuture<?> f) {
198 +        long startTime = System.nanoTime();
199 +        long timeoutMillis = LONG_DELAY_MS;
200 +        try {
201 +            f.get(timeoutMillis, MILLISECONDS);
202 +            shouldThrow();
203 +        } catch (ExecutionException success) {
204 +            assertTrue(success.getCause() instanceof CancellationException);
205 +        } catch (Throwable fail) { threadUnexpectedException(fail); }
206 +        assertTrue(millisElapsedSince(startTime) < timeoutMillis/2);
207 +
208          try {
209              f.join();
210              shouldThrow();
211 <        } catch (Throwable ex) {
212 <            assertTrue(ex instanceof CompletionException &&
142 <                       ((CompletionException)ex).getCause() instanceof CancellationException);
211 >        } catch (CompletionException success) {
212 >            assertTrue(success.getCause() instanceof CancellationException);
213          }
214          try {
215              f.getNow(null);
216              shouldThrow();
217 <        } catch (Throwable ex) {
218 <            assertTrue(ex instanceof CompletionException &&
149 <                       ((CompletionException)ex).getCause() instanceof CancellationException);
217 >        } catch (CompletionException success) {
218 >            assertTrue(success.getCause() instanceof CancellationException);
219          }
220          try {
221              f.get();
222              shouldThrow();
223 <        } catch (Throwable ex) {
224 <            assertTrue(ex instanceof ExecutionException &&
225 <                       ((ExecutionException)ex).getCause() instanceof CancellationException);
157 <        }
158 <        try {
159 <            f.get(0L, SECONDS);
160 <            shouldThrow();
161 <        } catch (Throwable ex) {
162 <            assertTrue(ex instanceof ExecutionException &&
163 <                       ((ExecutionException)ex).getCause() instanceof CancellationException);
164 <        }
223 >        } catch (ExecutionException success) {
224 >            assertTrue(success.getCause() instanceof CancellationException);
225 >        } catch (Throwable fail) { threadUnexpectedException(fail); }
226          assertTrue(f.isDone());
227          assertFalse(f.isCancelled());
228 +        assertTrue(f.isCompletedExceptionally());
229 +        assertTrue(f.toString().contains("[Completed exceptionally]"));
230      }
231  
232      /**
# Line 171 | Line 234 | public class CompletableFutureTest exten
234       * by methods isDone, isCancelled, and getNow
235       */
236      public void testConstructor() {
237 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
237 >        CompletableFuture<Integer> f = new CompletableFuture<>();
238          checkIncomplete(f);
239      }
240  
# Line 180 | Line 243 | public class CompletableFutureTest exten
243       * isCancelled, join, get, and getNow
244       */
245      public void testComplete() {
246 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
246 >        for (Integer v1 : new Integer[] { 1, null })
247 >    {
248 >        CompletableFuture<Integer> f = new CompletableFuture<>();
249          checkIncomplete(f);
250 <        f.complete(one);
251 <        checkCompletedNormally(f, one);
252 <    }
250 >        assertTrue(f.complete(v1));
251 >        assertFalse(f.complete(v1));
252 >        checkCompletedNormally(f, v1);
253 >    }}
254  
255      /**
256       * completeExceptionally completes exceptionally, as indicated by
257       * methods isDone, isCancelled, join, get, and getNow
258       */
259      public void testCompleteExceptionally() {
260 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
260 >        CompletableFuture<Integer> f = new CompletableFuture<>();
261 >        CFException ex = new CFException();
262          checkIncomplete(f);
263 <        f.completeExceptionally(new CFException());
264 <        checkCompletedWithWrappedCFException(f);
263 >        f.completeExceptionally(ex);
264 >        checkCompletedExceptionally(f, ex);
265      }
266  
267      /**
# Line 202 | Line 269 | public class CompletableFutureTest exten
269       * methods isDone, isCancelled, join, get, and getNow
270       */
271      public void testCancel() {
272 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
272 >        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
273 >    {
274 >        CompletableFuture<Integer> f = new CompletableFuture<>();
275          checkIncomplete(f);
276          assertTrue(f.cancel(true));
277 +        assertTrue(f.cancel(true));
278          checkCancelled(f);
279 <    }
279 >    }}
280  
281      /**
282       * obtrudeValue forces completion with given value
283       */
284      public void testObtrudeValue() {
285 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
285 >        CompletableFuture<Integer> f = new CompletableFuture<>();
286          checkIncomplete(f);
287 <        f.complete(one);
287 >        assertTrue(f.complete(one));
288          checkCompletedNormally(f, one);
289          f.obtrudeValue(three);
290          checkCompletedNormally(f, three);
291          f.obtrudeValue(two);
292          checkCompletedNormally(f, two);
293 <        f = new CompletableFuture<Integer>();
293 >        f = new CompletableFuture<>();
294          f.obtrudeValue(three);
295          checkCompletedNormally(f, three);
296 <        f = new CompletableFuture<Integer>();
296 >        f.obtrudeValue(null);
297 >        checkCompletedNormally(f, null);
298 >        f = new CompletableFuture<>();
299          f.completeExceptionally(new CFException());
300          f.obtrudeValue(four);
301          checkCompletedNormally(f, four);
# Line 233 | Line 305 | public class CompletableFutureTest exten
305       * obtrudeException forces completion with given exception
306       */
307      public void testObtrudeException() {
308 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
309 <        checkIncomplete(f);
310 <        f.complete(one);
311 <        checkCompletedNormally(f, one);
312 <        f.obtrudeException(new CFException());
313 <        checkCompletedWithWrappedCFException(f);
314 <        f = new CompletableFuture<Integer>();
315 <        f.obtrudeException(new CFException());
316 <        checkCompletedWithWrappedCFException(f);
317 <        f = new CompletableFuture<Integer>();
318 <        f.completeExceptionally(new CFException());
319 <        f.obtrudeValue(four);
320 <        checkCompletedNormally(f, four);
321 <        f.obtrudeException(new CFException());
322 <        checkCompletedWithWrappedCFException(f);
323 <    }
308 >        for (Integer v1 : new Integer[] { 1, null })
309 >    {
310 >        CFException ex;
311 >        CompletableFuture<Integer> f;
312 >
313 >        f = new CompletableFuture<>();
314 >        assertTrue(f.complete(v1));
315 >        for (int i = 0; i < 2; i++) {
316 >            f.obtrudeException(ex = new CFException());
317 >            checkCompletedExceptionally(f, ex);
318 >        }
319 >
320 >        f = new CompletableFuture<>();
321 >        for (int i = 0; i < 2; i++) {
322 >            f.obtrudeException(ex = new CFException());
323 >            checkCompletedExceptionally(f, ex);
324 >        }
325 >
326 >        f = new CompletableFuture<>();
327 >        f.completeExceptionally(ex = new CFException());
328 >        f.obtrudeValue(v1);
329 >        checkCompletedNormally(f, v1);
330 >        f.obtrudeException(ex = new CFException());
331 >        checkCompletedExceptionally(f, ex);
332 >        f.completeExceptionally(new CFException());
333 >        checkCompletedExceptionally(f, ex);
334 >        assertFalse(f.complete(v1));
335 >        checkCompletedExceptionally(f, ex);
336 >    }}
337  
338      /**
339       * getNumberOfDependents returns number of dependent tasks
340       */
341      public void testGetNumberOfDependents() {
342 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
343 <        assertEquals(f.getNumberOfDependents(), 0);
344 <        CompletableFuture g = f.thenRun(new Noop());
345 <        assertEquals(f.getNumberOfDependents(), 1);
346 <        assertEquals(g.getNumberOfDependents(), 0);
347 <        CompletableFuture h = f.thenRun(new Noop());
348 <        assertEquals(f.getNumberOfDependents(), 2);
349 <        f.complete(1);
350 <        checkCompletedNormally(g, null);
351 <        assertEquals(f.getNumberOfDependents(), 0);
352 <        assertEquals(g.getNumberOfDependents(), 0);
353 <    }
354 <
342 >        for (ExecutionMode m : ExecutionMode.values())
343 >        for (Integer v1 : new Integer[] { 1, null })
344 >    {
345 >        CompletableFuture<Integer> f = new CompletableFuture<>();
346 >        assertEquals(0, f.getNumberOfDependents());
347 >        final CompletableFuture<Void> g = m.thenRun(f, new Noop(m));
348 >        assertEquals(1, f.getNumberOfDependents());
349 >        assertEquals(0, g.getNumberOfDependents());
350 >        final CompletableFuture<Void> h = m.thenRun(f, new Noop(m));
351 >        assertEquals(2, f.getNumberOfDependents());
352 >        assertEquals(0, h.getNumberOfDependents());
353 >        assertTrue(f.complete(v1));
354 >        checkCompletedNormally(g, null);
355 >        checkCompletedNormally(h, null);
356 >        assertEquals(0, f.getNumberOfDependents());
357 >        assertEquals(0, g.getNumberOfDependents());
358 >        assertEquals(0, h.getNumberOfDependents());
359 >    }}
360  
361      /**
362       * toString indicates current completion state
# Line 277 | Line 367 | public class CompletableFutureTest exten
367          f = new CompletableFuture<String>();
368          assertTrue(f.toString().contains("[Not completed]"));
369  
370 <        f.complete("foo");
370 >        assertTrue(f.complete("foo"));
371          assertTrue(f.toString().contains("[Completed normally]"));
372  
373          f = new CompletableFuture<String>();
374 <        f.completeExceptionally(new IndexOutOfBoundsException());
374 >        assertTrue(f.completeExceptionally(new IndexOutOfBoundsException()));
375          assertTrue(f.toString().contains("[Completed exceptionally]"));
376 +
377 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false }) {
378 +            f = new CompletableFuture<String>();
379 +            assertTrue(f.cancel(mayInterruptIfRunning));
380 +            assertTrue(f.toString().contains("[Completed exceptionally]"));
381 +        }
382 +    }
383 +
384 +    /**
385 +     * completedFuture returns a completed CompletableFuture with given value
386 +     */
387 +    public void testCompletedFuture() {
388 +        CompletableFuture<String> f = CompletableFuture.completedFuture("test");
389 +        checkCompletedNormally(f, "test");
390 +    }
391 +
392 +    abstract class CheckedAction {
393 +        int invocationCount = 0;
394 +        final ExecutionMode m;
395 +        CheckedAction(ExecutionMode m) { this.m = m; }
396 +        void invoked() {
397 +            m.checkExecutionMode();
398 +            assertEquals(0, invocationCount++);
399 +        }
400 +        void assertNotInvoked() { assertEquals(0, invocationCount); }
401 +        void assertInvoked() { assertEquals(1, invocationCount); }
402 +    }
403 +
404 +    abstract class CheckedIntegerAction extends CheckedAction {
405 +        Integer value;
406 +        CheckedIntegerAction(ExecutionMode m) { super(m); }
407 +        void assertValue(Integer expected) {
408 +            assertInvoked();
409 +            assertEquals(expected, value);
410 +        }
411 +    }
412 +
413 +    class IntegerSupplier extends CheckedAction
414 +        implements Supplier<Integer>
415 +    {
416 +        final Integer value;
417 +        IntegerSupplier(ExecutionMode m, Integer value) {
418 +            super(m);
419 +            this.value = value;
420 +        }
421 +        public Integer get() {
422 +            invoked();
423 +            return value;
424 +        }
425      }
426  
427 <    static final Supplier<Integer> supplyOne =
428 <        () -> Integer.valueOf(1);
429 <    static final Function<Integer, Integer> inc =
291 <        (Integer x) -> Integer.valueOf(x.intValue() + 1);
292 <    static final BiFunction<Integer, Integer, Integer> add =
293 <        (Integer x, Integer y) -> Integer.valueOf(x.intValue() + y.intValue());
294 <    static final class IncAction implements Consumer<Integer> {
295 <        int value;
296 <        public void accept(Integer x) { value = x.intValue() + 1; }
427 >    // A function that handles and produces null values as well.
428 >    static Integer inc(Integer x) {
429 >        return (x == null) ? null : x + 1;
430      }
431 <    static final class AddAction implements BiConsumer<Integer, Integer> {
432 <        int value;
431 >
432 >    class NoopConsumer extends CheckedIntegerAction
433 >        implements Consumer<Integer>
434 >    {
435 >        NoopConsumer(ExecutionMode m) { super(m); }
436 >        public void accept(Integer x) {
437 >            invoked();
438 >            value = x;
439 >        }
440 >    }
441 >
442 >    class IncFunction extends CheckedIntegerAction
443 >        implements Function<Integer,Integer>
444 >    {
445 >        IncFunction(ExecutionMode m) { super(m); }
446 >        public Integer apply(Integer x) {
447 >            invoked();
448 >            return value = inc(x);
449 >        }
450 >    }
451 >
452 >    // Choose non-commutative actions for better coverage
453 >    // A non-commutative function that handles and produces null values as well.
454 >    static Integer subtract(Integer x, Integer y) {
455 >        return (x == null && y == null) ? null :
456 >            ((x == null) ? 42 : x.intValue())
457 >            - ((y == null) ? 99 : y.intValue());
458 >    }
459 >
460 >    class SubtractAction extends CheckedIntegerAction
461 >        implements BiConsumer<Integer, Integer>
462 >    {
463 >        SubtractAction(ExecutionMode m) { super(m); }
464          public void accept(Integer x, Integer y) {
465 <            value = x.intValue() + y.intValue();
465 >            invoked();
466 >            value = subtract(x, y);
467          }
468      }
469 <    static final class Noop implements Runnable {
470 <        boolean ran;
471 <        public void run() { ran = true; }
469 >
470 >    class SubtractFunction extends CheckedIntegerAction
471 >        implements BiFunction<Integer, Integer, Integer>
472 >    {
473 >        SubtractFunction(ExecutionMode m) { super(m); }
474 >        public Integer apply(Integer x, Integer y) {
475 >            invoked();
476 >            return value = subtract(x, y);
477 >        }
478      }
479  
480 <    static final class FailingSupplier implements Supplier<Integer> {
481 <        boolean ran;
482 <        public Integer get() { ran = true; throw new CFException(); }
480 >    class Noop extends CheckedAction implements Runnable {
481 >        Noop(ExecutionMode m) { super(m); }
482 >        public void run() {
483 >            invoked();
484 >        }
485 >    }
486 >
487 >    class FailingSupplier extends CheckedAction
488 >        implements Supplier<Integer>
489 >    {
490 >        FailingSupplier(ExecutionMode m) { super(m); }
491 >        public Integer get() {
492 >            invoked();
493 >            throw new CFException();
494 >        }
495      }
496 <    static final class FailingConsumer implements Consumer<Integer> {
497 <        boolean ran;
498 <        public void accept(Integer x) { ran = true; throw new CFException(); }
496 >
497 >    class FailingConsumer extends CheckedIntegerAction
498 >        implements Consumer<Integer>
499 >    {
500 >        FailingConsumer(ExecutionMode m) { super(m); }
501 >        public void accept(Integer x) {
502 >            invoked();
503 >            value = x;
504 >            throw new CFException();
505 >        }
506      }
507 <    static final class FailingBiConsumer implements BiConsumer<Integer, Integer> {
508 <        boolean ran;
509 <        public void accept(Integer x, Integer y) { ran = true; throw new CFException(); }
507 >
508 >    class FailingBiConsumer extends CheckedIntegerAction
509 >        implements BiConsumer<Integer, Integer>
510 >    {
511 >        FailingBiConsumer(ExecutionMode m) { super(m); }
512 >        public void accept(Integer x, Integer y) {
513 >            invoked();
514 >            value = subtract(x, y);
515 >            throw new CFException();
516 >        }
517      }
518 <    static final class FailingFunction implements Function<Integer, Integer> {
519 <        boolean ran;
520 <        public Integer apply(Integer x) { ran = true; throw new CFException(); }
518 >
519 >    class FailingFunction extends CheckedIntegerAction
520 >        implements Function<Integer, Integer>
521 >    {
522 >        FailingFunction(ExecutionMode m) { super(m); }
523 >        public Integer apply(Integer x) {
524 >            invoked();
525 >            value = x;
526 >            throw new CFException();
527 >        }
528      }
529 <    static final class FailingBiFunction implements BiFunction<Integer, Integer, Integer> {
530 <        boolean ran;
531 <        public Integer apply(Integer x, Integer y) { ran = true; throw new CFException(); }
529 >
530 >    class FailingBiFunction extends CheckedIntegerAction
531 >        implements BiFunction<Integer, Integer, Integer>
532 >    {
533 >        FailingBiFunction(ExecutionMode m) { super(m); }
534 >        public Integer apply(Integer x, Integer y) {
535 >            invoked();
536 >            value = subtract(x, y);
537 >            throw new CFException();
538 >        }
539      }
540 <    static final class FailingNoop implements Runnable {
541 <        boolean ran;
542 <        public void run() { ran = true; throw new CFException(); }
540 >
541 >    class FailingRunnable extends CheckedAction implements Runnable {
542 >        FailingRunnable(ExecutionMode m) { super(m); }
543 >        public void run() {
544 >            invoked();
545 >            throw new CFException();
546 >        }
547      }
548  
549 <    static final class CompletableFutureInc implements Function<Integer, CompletableFuture<Integer>> {
549 >
550 >    class CompletableFutureInc extends CheckedIntegerAction
551 >        implements Function<Integer, CompletableFuture<Integer>>
552 >    {
553 >        CompletableFutureInc(ExecutionMode m) { super(m); }
554          public CompletableFuture<Integer> apply(Integer x) {
555 <            CompletableFuture<Integer> f = new CompletableFuture<Integer>();
556 <            f.complete(Integer.valueOf(x.intValue() + 1));
555 >            invoked();
556 >            value = x;
557 >            CompletableFuture<Integer> f = new CompletableFuture<>();
558 >            assertTrue(f.complete(inc(x)));
559              return f;
560          }
561      }
562  
563 <    static final class FailingCompletableFutureFunction implements Function<Integer, CompletableFuture<Integer>> {
564 <        boolean ran;
563 >    class FailingCompletableFutureFunction extends CheckedIntegerAction
564 >        implements Function<Integer, CompletableFuture<Integer>>
565 >    {
566 >        FailingCompletableFutureFunction(ExecutionMode m) { super(m); }
567          public CompletableFuture<Integer> apply(Integer x) {
568 <            ran = true; throw new CFException();
568 >            invoked();
569 >            value = x;
570 >            throw new CFException();
571          }
572      }
573  
574      // Used for explicit executor tests
575      static final class ThreadExecutor implements Executor {
576 +        final AtomicInteger count = new AtomicInteger(0);
577 +        static final ThreadGroup tg = new ThreadGroup("ThreadExecutor");
578 +        static boolean startedCurrentThread() {
579 +            return Thread.currentThread().getThreadGroup() == tg;
580 +        }
581 +
582          public void execute(Runnable r) {
583 <            new Thread(r).start();
583 >            count.getAndIncrement();
584 >            new Thread(tg, r).start();
585          }
586      }
587  
588 <    static final class ExceptionToInteger implements Function<Throwable, Integer> {
589 <        public Integer apply(Throwable x) { return Integer.valueOf(3); }
358 <    }
588 >    static final boolean defaultExecutorIsCommonPool
589 >        = ForkJoinPool.getCommonPoolParallelism() > 1;
590  
591 <    static final class IntegerHandler implements BiFunction<Integer, Throwable, Integer> {
592 <        public Integer apply(Integer x, Throwable t) {
593 <            return (t == null) ? two : three;
594 <        }
595 <    }
591 >    /**
592 >     * Permits the testing of parallel code for the 3 different
593 >     * execution modes without copy/pasting all the test methods.
594 >     */
595 >    enum ExecutionMode {
596 >        SYNC {
597 >            public void checkExecutionMode() {
598 >                assertFalse(ThreadExecutor.startedCurrentThread());
599 >                assertNull(ForkJoinTask.getPool());
600 >            }
601 >            public CompletableFuture<Void> runAsync(Runnable a) {
602 >                throw new UnsupportedOperationException();
603 >            }
604 >            public <U> CompletableFuture<U> supplyAsync(Supplier<U> a) {
605 >                throw new UnsupportedOperationException();
606 >            }
607 >            public <T> CompletableFuture<Void> thenRun
608 >                (CompletableFuture<T> f, Runnable a) {
609 >                return f.thenRun(a);
610 >            }
611 >            public <T> CompletableFuture<Void> thenAccept
612 >                (CompletableFuture<T> f, Consumer<? super T> a) {
613 >                return f.thenAccept(a);
614 >            }
615 >            public <T,U> CompletableFuture<U> thenApply
616 >                (CompletableFuture<T> f, Function<? super T,U> a) {
617 >                return f.thenApply(a);
618 >            }
619 >            public <T,U> CompletableFuture<U> thenCompose
620 >                (CompletableFuture<T> f,
621 >                 Function<? super T,? extends CompletionStage<U>> a) {
622 >                return f.thenCompose(a);
623 >            }
624 >            public <T,U> CompletableFuture<U> handle
625 >                (CompletableFuture<T> f,
626 >                 BiFunction<? super T,Throwable,? extends U> a) {
627 >                return f.handle(a);
628 >            }
629 >            public <T> CompletableFuture<T> whenComplete
630 >                (CompletableFuture<T> f,
631 >                 BiConsumer<? super T,? super Throwable> a) {
632 >                return f.whenComplete(a);
633 >            }
634 >            public <T,U> CompletableFuture<Void> runAfterBoth
635 >                (CompletableFuture<T> f, CompletableFuture<U> g, Runnable a) {
636 >                return f.runAfterBoth(g, a);
637 >            }
638 >            public <T,U> CompletableFuture<Void> thenAcceptBoth
639 >                (CompletableFuture<T> f,
640 >                 CompletionStage<? extends U> g,
641 >                 BiConsumer<? super T,? super U> a) {
642 >                return f.thenAcceptBoth(g, a);
643 >            }
644 >            public <T,U,V> CompletableFuture<V> thenCombine
645 >                (CompletableFuture<T> f,
646 >                 CompletionStage<? extends U> g,
647 >                 BiFunction<? super T,? super U,? extends V> a) {
648 >                return f.thenCombine(g, a);
649 >            }
650 >            public <T> CompletableFuture<Void> runAfterEither
651 >                (CompletableFuture<T> f,
652 >                 CompletionStage<?> g,
653 >                 java.lang.Runnable a) {
654 >                return f.runAfterEither(g, a);
655 >            }
656 >            public <T> CompletableFuture<Void> acceptEither
657 >                (CompletableFuture<T> f,
658 >                 CompletionStage<? extends T> g,
659 >                 Consumer<? super T> a) {
660 >                return f.acceptEither(g, a);
661 >            }
662 >            public <T,U> CompletableFuture<U> applyToEither
663 >                (CompletableFuture<T> f,
664 >                 CompletionStage<? extends T> g,
665 >                 Function<? super T,U> a) {
666 >                return f.applyToEither(g, a);
667 >            }
668 >        },
669 >
670 >        ASYNC {
671 >            public void checkExecutionMode() {
672 >                assertEquals(defaultExecutorIsCommonPool,
673 >                             (ForkJoinPool.commonPool() == ForkJoinTask.getPool()));
674 >            }
675 >            public CompletableFuture<Void> runAsync(Runnable a) {
676 >                return CompletableFuture.runAsync(a);
677 >            }
678 >            public <U> CompletableFuture<U> supplyAsync(Supplier<U> a) {
679 >                return CompletableFuture.supplyAsync(a);
680 >            }
681 >            public <T> CompletableFuture<Void> thenRun
682 >                (CompletableFuture<T> f, Runnable a) {
683 >                return f.thenRunAsync(a);
684 >            }
685 >            public <T> CompletableFuture<Void> thenAccept
686 >                (CompletableFuture<T> f, Consumer<? super T> a) {
687 >                return f.thenAcceptAsync(a);
688 >            }
689 >            public <T,U> CompletableFuture<U> thenApply
690 >                (CompletableFuture<T> f, Function<? super T,U> a) {
691 >                return f.thenApplyAsync(a);
692 >            }
693 >            public <T,U> CompletableFuture<U> thenCompose
694 >                (CompletableFuture<T> f,
695 >                 Function<? super T,? extends CompletionStage<U>> a) {
696 >                return f.thenComposeAsync(a);
697 >            }
698 >            public <T,U> CompletableFuture<U> handle
699 >                (CompletableFuture<T> f,
700 >                 BiFunction<? super T,Throwable,? extends U> a) {
701 >                return f.handleAsync(a);
702 >            }
703 >            public <T> CompletableFuture<T> whenComplete
704 >                (CompletableFuture<T> f,
705 >                 BiConsumer<? super T,? super Throwable> a) {
706 >                return f.whenCompleteAsync(a);
707 >            }
708 >            public <T,U> CompletableFuture<Void> runAfterBoth
709 >                (CompletableFuture<T> f, CompletableFuture<U> g, Runnable a) {
710 >                return f.runAfterBothAsync(g, a);
711 >            }
712 >            public <T,U> CompletableFuture<Void> thenAcceptBoth
713 >                (CompletableFuture<T> f,
714 >                 CompletionStage<? extends U> g,
715 >                 BiConsumer<? super T,? super U> a) {
716 >                return f.thenAcceptBothAsync(g, a);
717 >            }
718 >            public <T,U,V> CompletableFuture<V> thenCombine
719 >                (CompletableFuture<T> f,
720 >                 CompletionStage<? extends U> g,
721 >                 BiFunction<? super T,? super U,? extends V> a) {
722 >                return f.thenCombineAsync(g, a);
723 >            }
724 >            public <T> CompletableFuture<Void> runAfterEither
725 >                (CompletableFuture<T> f,
726 >                 CompletionStage<?> g,
727 >                 java.lang.Runnable a) {
728 >                return f.runAfterEitherAsync(g, a);
729 >            }
730 >            public <T> CompletableFuture<Void> acceptEither
731 >                (CompletableFuture<T> f,
732 >                 CompletionStage<? extends T> g,
733 >                 Consumer<? super T> a) {
734 >                return f.acceptEitherAsync(g, a);
735 >            }
736 >            public <T,U> CompletableFuture<U> applyToEither
737 >                (CompletableFuture<T> f,
738 >                 CompletionStage<? extends T> g,
739 >                 Function<? super T,U> a) {
740 >                return f.applyToEitherAsync(g, a);
741 >            }
742 >        },
743 >
744 >        EXECUTOR {
745 >            public void checkExecutionMode() {
746 >                assertTrue(ThreadExecutor.startedCurrentThread());
747 >            }
748 >            public CompletableFuture<Void> runAsync(Runnable a) {
749 >                return CompletableFuture.runAsync(a, new ThreadExecutor());
750 >            }
751 >            public <U> CompletableFuture<U> supplyAsync(Supplier<U> a) {
752 >                return CompletableFuture.supplyAsync(a, new ThreadExecutor());
753 >            }
754 >            public <T> CompletableFuture<Void> thenRun
755 >                (CompletableFuture<T> f, Runnable a) {
756 >                return f.thenRunAsync(a, new ThreadExecutor());
757 >            }
758 >            public <T> CompletableFuture<Void> thenAccept
759 >                (CompletableFuture<T> f, Consumer<? super T> a) {
760 >                return f.thenAcceptAsync(a, new ThreadExecutor());
761 >            }
762 >            public <T,U> CompletableFuture<U> thenApply
763 >                (CompletableFuture<T> f, Function<? super T,U> a) {
764 >                return f.thenApplyAsync(a, new ThreadExecutor());
765 >            }
766 >            public <T,U> CompletableFuture<U> thenCompose
767 >                (CompletableFuture<T> f,
768 >                 Function<? super T,? extends CompletionStage<U>> a) {
769 >                return f.thenComposeAsync(a, new ThreadExecutor());
770 >            }
771 >            public <T,U> CompletableFuture<U> handle
772 >                (CompletableFuture<T> f,
773 >                 BiFunction<? super T,Throwable,? extends U> a) {
774 >                return f.handleAsync(a, new ThreadExecutor());
775 >            }
776 >            public <T> CompletableFuture<T> whenComplete
777 >                (CompletableFuture<T> f,
778 >                 BiConsumer<? super T,? super Throwable> a) {
779 >                return f.whenCompleteAsync(a, new ThreadExecutor());
780 >            }
781 >            public <T,U> CompletableFuture<Void> runAfterBoth
782 >                (CompletableFuture<T> f, CompletableFuture<U> g, Runnable a) {
783 >                return f.runAfterBothAsync(g, a, new ThreadExecutor());
784 >            }
785 >            public <T,U> CompletableFuture<Void> thenAcceptBoth
786 >                (CompletableFuture<T> f,
787 >                 CompletionStage<? extends U> g,
788 >                 BiConsumer<? super T,? super U> a) {
789 >                return f.thenAcceptBothAsync(g, a, new ThreadExecutor());
790 >            }
791 >            public <T,U,V> CompletableFuture<V> thenCombine
792 >                (CompletableFuture<T> f,
793 >                 CompletionStage<? extends U> g,
794 >                 BiFunction<? super T,? super U,? extends V> a) {
795 >                return f.thenCombineAsync(g, a, new ThreadExecutor());
796 >            }
797 >            public <T> CompletableFuture<Void> runAfterEither
798 >                (CompletableFuture<T> f,
799 >                 CompletionStage<?> g,
800 >                 java.lang.Runnable a) {
801 >                return f.runAfterEitherAsync(g, a, new ThreadExecutor());
802 >            }
803 >            public <T> CompletableFuture<Void> acceptEither
804 >                (CompletableFuture<T> f,
805 >                 CompletionStage<? extends T> g,
806 >                 Consumer<? super T> a) {
807 >                return f.acceptEitherAsync(g, a, new ThreadExecutor());
808 >            }
809 >            public <T,U> CompletableFuture<U> applyToEither
810 >                (CompletableFuture<T> f,
811 >                 CompletionStage<? extends T> g,
812 >                 Function<? super T,U> a) {
813 >                return f.applyToEitherAsync(g, a, new ThreadExecutor());
814 >            }
815 >        };
816  
817 +        public abstract void checkExecutionMode();
818 +        public abstract CompletableFuture<Void> runAsync(Runnable a);
819 +        public abstract <U> CompletableFuture<U> supplyAsync(Supplier<U> a);
820 +        public abstract <T> CompletableFuture<Void> thenRun
821 +            (CompletableFuture<T> f, Runnable a);
822 +        public abstract <T> CompletableFuture<Void> thenAccept
823 +            (CompletableFuture<T> f, Consumer<? super T> a);
824 +        public abstract <T,U> CompletableFuture<U> thenApply
825 +            (CompletableFuture<T> f, Function<? super T,U> a);
826 +        public abstract <T,U> CompletableFuture<U> thenCompose
827 +            (CompletableFuture<T> f,
828 +             Function<? super T,? extends CompletionStage<U>> a);
829 +        public abstract <T,U> CompletableFuture<U> handle
830 +            (CompletableFuture<T> f,
831 +             BiFunction<? super T,Throwable,? extends U> a);
832 +        public abstract <T> CompletableFuture<T> whenComplete
833 +            (CompletableFuture<T> f,
834 +             BiConsumer<? super T,? super Throwable> a);
835 +        public abstract <T,U> CompletableFuture<Void> runAfterBoth
836 +            (CompletableFuture<T> f, CompletableFuture<U> g, Runnable a);
837 +        public abstract <T,U> CompletableFuture<Void> thenAcceptBoth
838 +            (CompletableFuture<T> f,
839 +             CompletionStage<? extends U> g,
840 +             BiConsumer<? super T,? super U> a);
841 +        public abstract <T,U,V> CompletableFuture<V> thenCombine
842 +            (CompletableFuture<T> f,
843 +             CompletionStage<? extends U> g,
844 +             BiFunction<? super T,? super U,? extends V> a);
845 +        public abstract <T> CompletableFuture<Void> runAfterEither
846 +            (CompletableFuture<T> f,
847 +             CompletionStage<?> g,
848 +             java.lang.Runnable a);
849 +        public abstract <T> CompletableFuture<Void> acceptEither
850 +            (CompletableFuture<T> f,
851 +             CompletionStage<? extends T> g,
852 +             Consumer<? super T> a);
853 +        public abstract <T,U> CompletableFuture<U> applyToEither
854 +            (CompletableFuture<T> f,
855 +             CompletionStage<? extends T> g,
856 +             Function<? super T,U> a);
857 +    }
858 +
859 +    /**
860 +     * exceptionally action is not invoked when source completes
861 +     * normally, and source result is propagated
862 +     */
863 +    public void testExceptionally_normalCompletion() {
864 +        for (boolean createIncomplete : new boolean[] { true, false })
865 +        for (Integer v1 : new Integer[] { 1, null })
866 +    {
867 +        final AtomicInteger a = new AtomicInteger(0);
868 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
869 +        if (!createIncomplete) assertTrue(f.complete(v1));
870 +        final CompletableFuture<Integer> g = f.exceptionally
871 +            ((Throwable t) -> {
872 +                // Should not be called
873 +                a.getAndIncrement();
874 +                throw new AssertionError();
875 +            });
876 +        if (createIncomplete) assertTrue(f.complete(v1));
877 +
878 +        checkCompletedNormally(g, v1);
879 +        checkCompletedNormally(f, v1);
880 +        assertEquals(0, a.get());
881 +    }}
882  
883      /**
884       * exceptionally action completes with function value on source
885 <     * exception;  otherwise with source value
885 >     * exception
886       */
887 <    public void testExceptionally() {
888 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
889 <        ExceptionToInteger r = new ExceptionToInteger();
890 <        CompletableFuture<Integer> g = f.exceptionally(r);
891 <        f.completeExceptionally(new CFException());
892 <        checkCompletedNormally(g, three);
887 >    public void testExceptionally_exceptionalCompletion() {
888 >        for (boolean createIncomplete : new boolean[] { true, false })
889 >        for (Integer v1 : new Integer[] { 1, null })
890 >    {
891 >        final AtomicInteger a = new AtomicInteger(0);
892 >        final CFException ex = new CFException();
893 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
894 >        if (!createIncomplete) f.completeExceptionally(ex);
895 >        final CompletableFuture<Integer> g = f.exceptionally
896 >            ((Throwable t) -> {
897 >                ExecutionMode.SYNC.checkExecutionMode();
898 >                threadAssertSame(t, ex);
899 >                a.getAndIncrement();
900 >                return v1;
901 >            });
902 >        if (createIncomplete) f.completeExceptionally(ex);
903 >
904 >        checkCompletedNormally(g, v1);
905 >        assertEquals(1, a.get());
906 >    }}
907 >
908 >    public void testExceptionally_exceptionalCompletionActionFailed() {
909 >        for (boolean createIncomplete : new boolean[] { true, false })
910 >        for (Integer v1 : new Integer[] { 1, null })
911 >    {
912 >        final AtomicInteger a = new AtomicInteger(0);
913 >        final CFException ex1 = new CFException();
914 >        final CFException ex2 = new CFException();
915 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
916 >        if (!createIncomplete) f.completeExceptionally(ex1);
917 >        final CompletableFuture<Integer> g = f.exceptionally
918 >            ((Throwable t) -> {
919 >                ExecutionMode.SYNC.checkExecutionMode();
920 >                threadAssertSame(t, ex1);
921 >                a.getAndIncrement();
922 >                throw ex2;
923 >            });
924 >        if (createIncomplete) f.completeExceptionally(ex1);
925 >
926 >        checkCompletedWithWrappedException(g, ex2);
927 >        assertEquals(1, a.get());
928 >    }}
929 >
930 >    /**
931 >     * whenComplete action executes on normal completion, propagating
932 >     * source result.
933 >     */
934 >    public void testWhenComplete_normalCompletion1() {
935 >        for (ExecutionMode m : ExecutionMode.values())
936 >        for (boolean createIncomplete : new boolean[] { true, false })
937 >        for (Integer v1 : new Integer[] { 1, null })
938 >    {
939 >        final AtomicInteger a = new AtomicInteger(0);
940 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
941 >        if (!createIncomplete) assertTrue(f.complete(v1));
942 >        final CompletableFuture<Integer> g = m.whenComplete
943 >            (f,
944 >             (Integer x, Throwable t) -> {
945 >                m.checkExecutionMode();
946 >                threadAssertSame(x, v1);
947 >                threadAssertNull(t);
948 >                a.getAndIncrement();
949 >            });
950 >        if (createIncomplete) assertTrue(f.complete(v1));
951 >
952 >        checkCompletedNormally(g, v1);
953 >        checkCompletedNormally(f, v1);
954 >        assertEquals(1, a.get());
955 >    }}
956 >
957 >    /**
958 >     * whenComplete action executes on exceptional completion, propagating
959 >     * source result.
960 >     */
961 >    public void testWhenComplete_exceptionalCompletion() {
962 >        for (ExecutionMode m : ExecutionMode.values())
963 >        for (boolean createIncomplete : new boolean[] { true, false })
964 >        for (Integer v1 : new Integer[] { 1, null })
965 >    {
966 >        final AtomicInteger a = new AtomicInteger(0);
967 >        final CFException ex = new CFException();
968 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
969 >        if (!createIncomplete) f.completeExceptionally(ex);
970 >        final CompletableFuture<Integer> g = m.whenComplete
971 >            (f,
972 >             (Integer x, Throwable t) -> {
973 >                m.checkExecutionMode();
974 >                threadAssertNull(x);
975 >                threadAssertSame(t, ex);
976 >                a.getAndIncrement();
977 >            });
978 >        if (createIncomplete) f.completeExceptionally(ex);
979 >
980 >        checkCompletedWithWrappedException(g, ex);
981 >        checkCompletedExceptionally(f, ex);
982 >        assertEquals(1, a.get());
983 >    }}
984 >
985 >    /**
986 >     * whenComplete action executes on cancelled source, propagating
987 >     * CancellationException.
988 >     */
989 >    public void testWhenComplete_sourceCancelled() {
990 >        for (ExecutionMode m : ExecutionMode.values())
991 >        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
992 >        for (boolean createIncomplete : new boolean[] { true, false })
993 >    {
994 >        final AtomicInteger a = new AtomicInteger(0);
995 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
996 >        if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
997 >        final CompletableFuture<Integer> g = m.whenComplete
998 >            (f,
999 >             (Integer x, Throwable t) -> {
1000 >                m.checkExecutionMode();
1001 >                threadAssertNull(x);
1002 >                threadAssertTrue(t instanceof CancellationException);
1003 >                a.getAndIncrement();
1004 >            });
1005 >        if (createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
1006  
1007 <        f = new CompletableFuture<Integer>();
1008 <        r = new ExceptionToInteger();
1009 <        g = f.exceptionally(r);
1010 <        f.complete(one);
382 <        checkCompletedNormally(g, one);
383 <    }
1007 >        checkCompletedWithWrappedCancellationException(g);
1008 >        checkCancelled(f);
1009 >        assertEquals(1, a.get());
1010 >    }}
1011  
1012      /**
1013 <     * handle action completes normally with function value on either
1014 <     * normal or exceptional completion of source
1013 >     * If a whenComplete action throws an exception when triggered by
1014 >     * a normal completion, it completes exceptionally
1015       */
1016 <    public void testHandle() {
1017 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1018 <        IntegerHandler r = new IntegerHandler();
1019 <        CompletableFuture<Integer> g = f.handle(r);
1020 <        f.completeExceptionally(new CFException());
1021 <        checkCompletedNormally(g, three);
1016 >    public void testWhenComplete_actionFailed() {
1017 >        for (boolean createIncomplete : new boolean[] { true, false })
1018 >        for (ExecutionMode m : ExecutionMode.values())
1019 >        for (Integer v1 : new Integer[] { 1, null })
1020 >    {
1021 >        final AtomicInteger a = new AtomicInteger(0);
1022 >        final CFException ex = new CFException();
1023 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1024 >        if (!createIncomplete) assertTrue(f.complete(v1));
1025 >        final CompletableFuture<Integer> g = m.whenComplete
1026 >            (f,
1027 >             (Integer x, Throwable t) -> {
1028 >                m.checkExecutionMode();
1029 >                threadAssertSame(x, v1);
1030 >                threadAssertNull(t);
1031 >                a.getAndIncrement();
1032 >                throw ex;
1033 >            });
1034 >        if (createIncomplete) assertTrue(f.complete(v1));
1035 >
1036 >        checkCompletedWithWrappedException(g, ex);
1037 >        checkCompletedNormally(f, v1);
1038 >        assertEquals(1, a.get());
1039 >    }}
1040 >
1041 >    /**
1042 >     * If a whenComplete action throws an exception when triggered by
1043 >     * a source completion that also throws an exception, the source
1044 >     * exception takes precedence.
1045 >     */
1046 >    public void testWhenComplete_actionFailedSourceFailed() {
1047 >        for (boolean createIncomplete : new boolean[] { true, false })
1048 >        for (ExecutionMode m : ExecutionMode.values())
1049 >        for (Integer v1 : new Integer[] { 1, null })
1050 >    {
1051 >        final AtomicInteger a = new AtomicInteger(0);
1052 >        final CFException ex1 = new CFException();
1053 >        final CFException ex2 = new CFException();
1054 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1055 >
1056 >        if (!createIncomplete) f.completeExceptionally(ex1);
1057 >        final CompletableFuture<Integer> g = m.whenComplete
1058 >            (f,
1059 >             (Integer x, Throwable t) -> {
1060 >                m.checkExecutionMode();
1061 >                threadAssertSame(t, ex1);
1062 >                threadAssertNull(x);
1063 >                a.getAndIncrement();
1064 >                throw ex2;
1065 >            });
1066 >        if (createIncomplete) f.completeExceptionally(ex1);
1067 >
1068 >        checkCompletedWithWrappedException(g, ex1);
1069 >        checkCompletedExceptionally(f, ex1);
1070 >        assertEquals(1, a.get());
1071 >    }}
1072 >
1073 >    /**
1074 >     * handle action completes normally with function value on normal
1075 >     * completion of source
1076 >     */
1077 >    public void testHandle_normalCompletion() {
1078 >        for (ExecutionMode m : ExecutionMode.values())
1079 >        for (boolean createIncomplete : new boolean[] { true, false })
1080 >        for (Integer v1 : new Integer[] { 1, null })
1081 >    {
1082 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1083 >        final AtomicInteger a = new AtomicInteger(0);
1084 >        if (!createIncomplete) assertTrue(f.complete(v1));
1085 >        final CompletableFuture<Integer> g = m.handle
1086 >            (f,
1087 >             (Integer x, Throwable t) -> {
1088 >                m.checkExecutionMode();
1089 >                threadAssertSame(x, v1);
1090 >                threadAssertNull(t);
1091 >                a.getAndIncrement();
1092 >                return inc(v1);
1093 >            });
1094 >        if (createIncomplete) assertTrue(f.complete(v1));
1095 >
1096 >        checkCompletedNormally(g, inc(v1));
1097 >        checkCompletedNormally(f, v1);
1098 >        assertEquals(1, a.get());
1099 >    }}
1100  
1101 <        f = new CompletableFuture<Integer>();
1102 <        r = new IntegerHandler();
1103 <        g = f.handle(r);
1104 <        f.complete(one);
1105 <        checkCompletedNormally(g, two);
1106 <    }
1101 >    /**
1102 >     * handle action completes normally with function value on
1103 >     * exceptional completion of source
1104 >     */
1105 >    public void testHandle_exceptionalCompletion() {
1106 >        for (ExecutionMode m : ExecutionMode.values())
1107 >        for (boolean createIncomplete : new boolean[] { true, false })
1108 >        for (Integer v1 : new Integer[] { 1, null })
1109 >    {
1110 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1111 >        final AtomicInteger a = new AtomicInteger(0);
1112 >        final CFException ex = new CFException();
1113 >        if (!createIncomplete) f.completeExceptionally(ex);
1114 >        final CompletableFuture<Integer> g = m.handle
1115 >            (f,
1116 >             (Integer x, Throwable t) -> {
1117 >                m.checkExecutionMode();
1118 >                threadAssertNull(x);
1119 >                threadAssertSame(t, ex);
1120 >                a.getAndIncrement();
1121 >                return v1;
1122 >            });
1123 >        if (createIncomplete) f.completeExceptionally(ex);
1124 >
1125 >        checkCompletedNormally(g, v1);
1126 >        checkCompletedExceptionally(f, ex);
1127 >        assertEquals(1, a.get());
1128 >    }}
1129 >
1130 >    /**
1131 >     * handle action completes normally with function value on
1132 >     * cancelled source
1133 >     */
1134 >    public void testHandle_sourceCancelled() {
1135 >        for (ExecutionMode m : ExecutionMode.values())
1136 >        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1137 >        for (boolean createIncomplete : new boolean[] { true, false })
1138 >        for (Integer v1 : new Integer[] { 1, null })
1139 >    {
1140 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1141 >        final AtomicInteger a = new AtomicInteger(0);
1142 >        if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
1143 >        final CompletableFuture<Integer> g = m.handle
1144 >            (f,
1145 >             (Integer x, Throwable t) -> {
1146 >                m.checkExecutionMode();
1147 >                threadAssertNull(x);
1148 >                threadAssertTrue(t instanceof CancellationException);
1149 >                a.getAndIncrement();
1150 >                return v1;
1151 >            });
1152 >        if (createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
1153 >
1154 >        checkCompletedNormally(g, v1);
1155 >        checkCancelled(f);
1156 >        assertEquals(1, a.get());
1157 >    }}
1158  
1159      /**
1160 <     * runAsync completes after running Runnable
1160 >     * handle result completes exceptionally if action does
1161       */
1162 <    public void testRunAsync() {
1163 <        Noop r = new Noop();
1164 <        CompletableFuture<Void> f = CompletableFuture.runAsync(r);
1165 <        assertNull(f.join());
1166 <        assertTrue(r.ran);
1167 <    }
1162 >    public void testHandle_sourceFailedActionFailed() {
1163 >        for (ExecutionMode m : ExecutionMode.values())
1164 >        for (boolean createIncomplete : new boolean[] { true, false })
1165 >    {
1166 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1167 >        final AtomicInteger a = new AtomicInteger(0);
1168 >        final CFException ex1 = new CFException();
1169 >        final CFException ex2 = new CFException();
1170 >        if (!createIncomplete) f.completeExceptionally(ex1);
1171 >        final CompletableFuture<Integer> g = m.handle
1172 >            (f,
1173 >             (Integer x, Throwable t) -> {
1174 >                m.checkExecutionMode();
1175 >                threadAssertNull(x);
1176 >                threadAssertSame(ex1, t);
1177 >                a.getAndIncrement();
1178 >                throw ex2;
1179 >            });
1180 >        if (createIncomplete) f.completeExceptionally(ex1);
1181 >
1182 >        checkCompletedWithWrappedException(g, ex2);
1183 >        checkCompletedExceptionally(f, ex1);
1184 >        assertEquals(1, a.get());
1185 >    }}
1186 >
1187 >    public void testHandle_sourceCompletedNormallyActionFailed() {
1188 >        for (ExecutionMode m : ExecutionMode.values())
1189 >        for (boolean createIncomplete : new boolean[] { true, false })
1190 >        for (Integer v1 : new Integer[] { 1, null })
1191 >    {
1192 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1193 >        final AtomicInteger a = new AtomicInteger(0);
1194 >        final CFException ex = new CFException();
1195 >        if (!createIncomplete) assertTrue(f.complete(v1));
1196 >        final CompletableFuture<Integer> g = m.handle
1197 >            (f,
1198 >             (Integer x, Throwable t) -> {
1199 >                m.checkExecutionMode();
1200 >                threadAssertSame(x, v1);
1201 >                threadAssertNull(t);
1202 >                a.getAndIncrement();
1203 >                throw ex;
1204 >            });
1205 >        if (createIncomplete) assertTrue(f.complete(v1));
1206 >
1207 >        checkCompletedWithWrappedException(g, ex);
1208 >        checkCompletedNormally(f, v1);
1209 >        assertEquals(1, a.get());
1210 >    }}
1211  
1212      /**
1213 <     * runAsync with executor completes after running Runnable
1213 >     * runAsync completes after running Runnable
1214       */
1215 <    public void testRunAsync2() {
1216 <        Noop r = new Noop();
1217 <        CompletableFuture<Void> f = CompletableFuture.runAsync(r, new ThreadExecutor());
1215 >    public void testRunAsync_normalCompletion() {
1216 >        ExecutionMode[] executionModes = {
1217 >            ExecutionMode.ASYNC,
1218 >            ExecutionMode.EXECUTOR,
1219 >        };
1220 >        for (ExecutionMode m : executionModes)
1221 >    {
1222 >        final Noop r = new Noop(m);
1223 >        final CompletableFuture<Void> f = m.runAsync(r);
1224          assertNull(f.join());
1225 <        assertTrue(r.ran);
1226 <    }
1225 >        checkCompletedNormally(f, null);
1226 >        r.assertInvoked();
1227 >    }}
1228  
1229      /**
1230       * failing runAsync completes exceptionally after running Runnable
1231       */
1232 <    public void testRunAsync3() {
1233 <        FailingNoop r = new FailingNoop();
1234 <        CompletableFuture<Void> f = CompletableFuture.runAsync(r);
1232 >    public void testRunAsync_exceptionalCompletion() {
1233 >        ExecutionMode[] executionModes = {
1234 >            ExecutionMode.ASYNC,
1235 >            ExecutionMode.EXECUTOR,
1236 >        };
1237 >        for (ExecutionMode m : executionModes)
1238 >    {
1239 >        final FailingRunnable r = new FailingRunnable(m);
1240 >        final CompletableFuture<Void> f = m.runAsync(r);
1241          checkCompletedWithWrappedCFException(f);
1242 <        assertTrue(r.ran);
1243 <    }
1242 >        r.assertInvoked();
1243 >    }}
1244  
1245      /**
1246       * supplyAsync completes with result of supplier
1247       */
1248 <    public void testSupplyAsync() {
1249 <        CompletableFuture<Integer> f = CompletableFuture.supplyAsync(supplyOne);
1250 <        assertEquals(f.join(), one);
1251 <    }
1252 <
1253 <    /**
1254 <     * supplyAsync with executor completes with result of supplier
1255 <     */
1256 <    public void testSupplyAsync2() {
1257 <        CompletableFuture<Integer> f = CompletableFuture.supplyAsync(supplyOne, new ThreadExecutor());
1258 <        assertEquals(f.join(), one);
1259 <    }
1248 >    public void testSupplyAsync_normalCompletion() {
1249 >        ExecutionMode[] executionModes = {
1250 >            ExecutionMode.ASYNC,
1251 >            ExecutionMode.EXECUTOR,
1252 >        };
1253 >        for (ExecutionMode m : executionModes)
1254 >        for (Integer v1 : new Integer[] { 1, null })
1255 >    {
1256 >        final IntegerSupplier r = new IntegerSupplier(m, v1);
1257 >        final CompletableFuture<Integer> f = m.supplyAsync(r);
1258 >        assertSame(v1, f.join());
1259 >        checkCompletedNormally(f, v1);
1260 >        r.assertInvoked();
1261 >    }}
1262  
1263      /**
1264       * Failing supplyAsync completes exceptionally
1265       */
1266 <    public void testSupplyAsync3() {
1267 <        FailingSupplier r = new FailingSupplier();
1268 <        CompletableFuture<Integer> f = CompletableFuture.supplyAsync(r);
1266 >    public void testSupplyAsync_exceptionalCompletion() {
1267 >        ExecutionMode[] executionModes = {
1268 >            ExecutionMode.ASYNC,
1269 >            ExecutionMode.EXECUTOR,
1270 >        };
1271 >        for (ExecutionMode m : executionModes)
1272 >    {
1273 >        FailingSupplier r = new FailingSupplier(m);
1274 >        CompletableFuture<Integer> f = m.supplyAsync(r);
1275          checkCompletedWithWrappedCFException(f);
1276 <        assertTrue(r.ran);
1277 <    }
1276 >        r.assertInvoked();
1277 >    }}
1278  
1279      // seq completion methods
1280  
1281      /**
1282       * thenRun result completes normally after normal completion of source
1283       */
1284 <    public void testThenRun() {
1285 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1286 <        Noop r = new Noop();
1287 <        CompletableFuture<Void> g = f.thenRun(r);
1288 <        f.complete(null);
1289 <        checkCompletedNormally(g, null);
1290 <        // reordered version
1291 <        f = new CompletableFuture<Integer>();
1292 <        f.complete(null);
1293 <        r = new Noop();
1294 <        g = f.thenRun(r);
1295 <        checkCompletedNormally(g, null);
1296 <    }
1284 >    public void testThenRun_normalCompletion() {
1285 >        for (ExecutionMode m : ExecutionMode.values())
1286 >        for (Integer v1 : new Integer[] { 1, null })
1287 >    {
1288 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1289 >        final Noop[] rs = new Noop[6];
1290 >        for (int i = 0; i < rs.length; i++) rs[i] = new Noop(m);
1291 >
1292 >        final CompletableFuture<Void> h0 = m.thenRun(f, rs[0]);
1293 >        final CompletableFuture<Void> h1 = m.runAfterBoth(f, f, rs[1]);
1294 >        final CompletableFuture<Void> h2 = m.runAfterEither(f, f, rs[2]);
1295 >        checkIncomplete(h0);
1296 >        checkIncomplete(h1);
1297 >        checkIncomplete(h2);
1298 >        assertTrue(f.complete(v1));
1299 >        final CompletableFuture<Void> h3 = m.thenRun(f, rs[3]);
1300 >        final CompletableFuture<Void> h4 = m.runAfterBoth(f, f, rs[4]);
1301 >        final CompletableFuture<Void> h5 = m.runAfterEither(f, f, rs[5]);
1302 >
1303 >        checkCompletedNormally(h0, null);
1304 >        checkCompletedNormally(h1, null);
1305 >        checkCompletedNormally(h2, null);
1306 >        checkCompletedNormally(h3, null);
1307 >        checkCompletedNormally(h4, null);
1308 >        checkCompletedNormally(h5, null);
1309 >        checkCompletedNormally(f, v1);
1310 >        for (Noop r : rs) r.assertInvoked();
1311 >    }}
1312  
1313      /**
1314       * thenRun result completes exceptionally after exceptional
1315       * completion of source
1316       */
1317 <    public void testThenRun2() {
1318 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1319 <        Noop r = new Noop();
1320 <        CompletableFuture<Void> g = f.thenRun(r);
1321 <        f.completeExceptionally(new CFException());
1322 <        checkCompletedWithWrappedCFException(g);
1323 <    }
1317 >    public void testThenRun_exceptionalCompletion() {
1318 >        for (ExecutionMode m : ExecutionMode.values())
1319 >    {
1320 >        final CFException ex = new CFException();
1321 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1322 >        final Noop[] rs = new Noop[6];
1323 >        for (int i = 0; i < rs.length; i++) rs[i] = new Noop(m);
1324 >
1325 >        final CompletableFuture<Void> h0 = m.thenRun(f, rs[0]);
1326 >        final CompletableFuture<Void> h1 = m.runAfterBoth(f, f, rs[1]);
1327 >        final CompletableFuture<Void> h2 = m.runAfterEither(f, f, rs[2]);
1328 >        checkIncomplete(h0);
1329 >        checkIncomplete(h1);
1330 >        checkIncomplete(h2);
1331 >        assertTrue(f.completeExceptionally(ex));
1332 >        final CompletableFuture<Void> h3 = m.thenRun(f, rs[3]);
1333 >        final CompletableFuture<Void> h4 = m.runAfterBoth(f, f, rs[4]);
1334 >        final CompletableFuture<Void> h5 = m.runAfterEither(f, f, rs[5]);
1335 >
1336 >        checkCompletedWithWrappedException(h0, ex);
1337 >        checkCompletedWithWrappedException(h1, ex);
1338 >        checkCompletedWithWrappedException(h2, ex);
1339 >        checkCompletedWithWrappedException(h3, ex);
1340 >        checkCompletedWithWrappedException(h4, ex);
1341 >        checkCompletedWithWrappedException(h5, ex);
1342 >        checkCompletedExceptionally(f, ex);
1343 >        for (Noop r : rs) r.assertNotInvoked();
1344 >    }}
1345  
1346      /**
1347 <     * thenRun result completes exceptionally if action does
1347 >     * thenRun result completes exceptionally if source cancelled
1348       */
1349 <    public void testThenRun3() {
1350 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1351 <        FailingNoop r = new FailingNoop();
1352 <        CompletableFuture<Void> g = f.thenRun(r);
1353 <        f.complete(null);
1354 <        checkCompletedWithWrappedCFException(g);
1355 <    }
1349 >    public void testThenRun_sourceCancelled() {
1350 >        for (ExecutionMode m : ExecutionMode.values())
1351 >        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1352 >    {
1353 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1354 >        final Noop[] rs = new Noop[6];
1355 >        for (int i = 0; i < rs.length; i++) rs[i] = new Noop(m);
1356 >
1357 >        final CompletableFuture<Void> h0 = m.thenRun(f, rs[0]);
1358 >        final CompletableFuture<Void> h1 = m.runAfterBoth(f, f, rs[1]);
1359 >        final CompletableFuture<Void> h2 = m.runAfterEither(f, f, rs[2]);
1360 >        checkIncomplete(h0);
1361 >        checkIncomplete(h1);
1362 >        checkIncomplete(h2);
1363 >        assertTrue(f.cancel(mayInterruptIfRunning));
1364 >        final CompletableFuture<Void> h3 = m.thenRun(f, rs[3]);
1365 >        final CompletableFuture<Void> h4 = m.runAfterBoth(f, f, rs[4]);
1366 >        final CompletableFuture<Void> h5 = m.runAfterEither(f, f, rs[5]);
1367 >
1368 >        checkCompletedWithWrappedCancellationException(h0);
1369 >        checkCompletedWithWrappedCancellationException(h1);
1370 >        checkCompletedWithWrappedCancellationException(h2);
1371 >        checkCompletedWithWrappedCancellationException(h3);
1372 >        checkCompletedWithWrappedCancellationException(h4);
1373 >        checkCompletedWithWrappedCancellationException(h5);
1374 >        checkCancelled(f);
1375 >        for (Noop r : rs) r.assertNotInvoked();
1376 >    }}
1377  
1378      /**
1379 <     * thenRun result completes exceptionally if source cancelled
1379 >     * thenRun result completes exceptionally if action does
1380       */
1381 <    public void testThenRun4() {
1382 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1383 <        Noop r = new Noop();
1384 <        CompletableFuture<Void> g = f.thenRun(r);
1385 <        assertTrue(f.cancel(true));
1386 <        checkCompletedWithWrappedCancellationException(g);
1387 <    }
1381 >    public void testThenRun_actionFailed() {
1382 >        for (ExecutionMode m : ExecutionMode.values())
1383 >        for (Integer v1 : new Integer[] { 1, null })
1384 >    {
1385 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1386 >        final FailingRunnable[] rs = new FailingRunnable[6];
1387 >        for (int i = 0; i < rs.length; i++) rs[i] = new FailingRunnable(m);
1388 >
1389 >        final CompletableFuture<Void> h0 = m.thenRun(f, rs[0]);
1390 >        final CompletableFuture<Void> h1 = m.runAfterBoth(f, f, rs[1]);
1391 >        final CompletableFuture<Void> h2 = m.runAfterEither(f, f, rs[2]);
1392 >        assertTrue(f.complete(v1));
1393 >        final CompletableFuture<Void> h3 = m.thenRun(f, rs[3]);
1394 >        final CompletableFuture<Void> h4 = m.runAfterBoth(f, f, rs[4]);
1395 >        final CompletableFuture<Void> h5 = m.runAfterEither(f, f, rs[5]);
1396 >
1397 >        checkCompletedWithWrappedCFException(h0);
1398 >        checkCompletedWithWrappedCFException(h1);
1399 >        checkCompletedWithWrappedCFException(h2);
1400 >        checkCompletedWithWrappedCFException(h3);
1401 >        checkCompletedWithWrappedCFException(h4);
1402 >        checkCompletedWithWrappedCFException(h5);
1403 >        checkCompletedNormally(f, v1);
1404 >    }}
1405  
1406      /**
1407       * thenApply result completes normally after normal completion of source
1408       */
1409 <    public void testThenApply() {
1410 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1411 <        CompletableFuture<Integer> g = f.thenApply(inc);
1412 <        f.complete(one);
1413 <        checkCompletedNormally(g, two);
1414 <    }
1409 >    public void testThenApply_normalCompletion() {
1410 >        for (ExecutionMode m : ExecutionMode.values())
1411 >        for (Integer v1 : new Integer[] { 1, null })
1412 >    {
1413 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1414 >        final IncFunction[] rs = new IncFunction[4];
1415 >        for (int i = 0; i < rs.length; i++) rs[i] = new IncFunction(m);
1416 >
1417 >        final CompletableFuture<Integer> h0 = m.thenApply(f, rs[0]);
1418 >        final CompletableFuture<Integer> h1 = m.applyToEither(f, f, rs[1]);
1419 >        checkIncomplete(h0);
1420 >        checkIncomplete(h1);
1421 >        assertTrue(f.complete(v1));
1422 >        final CompletableFuture<Integer> h2 = m.thenApply(f, rs[2]);
1423 >        final CompletableFuture<Integer> h3 = m.applyToEither(f, f, rs[3]);
1424 >
1425 >        checkCompletedNormally(h0, inc(v1));
1426 >        checkCompletedNormally(h1, inc(v1));
1427 >        checkCompletedNormally(h2, inc(v1));
1428 >        checkCompletedNormally(h3, inc(v1));
1429 >        checkCompletedNormally(f, v1);
1430 >        for (IncFunction r : rs) r.assertValue(inc(v1));
1431 >    }}
1432  
1433      /**
1434       * thenApply result completes exceptionally after exceptional
1435       * completion of source
1436       */
1437 <    public void testThenApply2() {
1438 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1439 <        CompletableFuture<Integer> g = f.thenApply(inc);
1440 <        f.completeExceptionally(new CFException());
1441 <        checkCompletedWithWrappedCFException(g);
1442 <    }
1437 >    public void testThenApply_exceptionalCompletion() {
1438 >        for (ExecutionMode m : ExecutionMode.values())
1439 >    {
1440 >        final CFException ex = new CFException();
1441 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1442 >        final IncFunction[] rs = new IncFunction[4];
1443 >        for (int i = 0; i < rs.length; i++) rs[i] = new IncFunction(m);
1444 >
1445 >        final CompletableFuture<Integer> h0 = m.thenApply(f, rs[0]);
1446 >        final CompletableFuture<Integer> h1 = m.applyToEither(f, f, rs[1]);
1447 >        assertTrue(f.completeExceptionally(ex));
1448 >        final CompletableFuture<Integer> h2 = m.thenApply(f, rs[2]);
1449 >        final CompletableFuture<Integer> h3 = m.applyToEither(f, f, rs[3]);
1450 >
1451 >        checkCompletedWithWrappedException(h0, ex);
1452 >        checkCompletedWithWrappedException(h1, ex);
1453 >        checkCompletedWithWrappedException(h2, ex);
1454 >        checkCompletedWithWrappedException(h3, ex);
1455 >        checkCompletedExceptionally(f, ex);
1456 >        for (IncFunction r : rs) r.assertNotInvoked();
1457 >    }}
1458  
1459      /**
1460 <     * thenApply result completes exceptionally if action does
1460 >     * thenApply result completes exceptionally if source cancelled
1461       */
1462 <    public void testThenApply3() {
1463 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1464 <        CompletableFuture<Integer> g = f.thenApply(new FailingFunction());
1465 <        f.complete(one);
1466 <        checkCompletedWithWrappedCFException(g);
1467 <    }
1462 >    public void testThenApply_sourceCancelled() {
1463 >        for (ExecutionMode m : ExecutionMode.values())
1464 >        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1465 >    {
1466 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1467 >        final IncFunction[] rs = new IncFunction[4];
1468 >        for (int i = 0; i < rs.length; i++) rs[i] = new IncFunction(m);
1469 >
1470 >        final CompletableFuture<Integer> h0 = m.thenApply(f, rs[0]);
1471 >        final CompletableFuture<Integer> h1 = m.applyToEither(f, f, rs[1]);
1472 >        assertTrue(f.cancel(mayInterruptIfRunning));
1473 >        final CompletableFuture<Integer> h2 = m.thenApply(f, rs[2]);
1474 >        final CompletableFuture<Integer> h3 = m.applyToEither(f, f, rs[3]);
1475 >
1476 >        checkCompletedWithWrappedCancellationException(h0);
1477 >        checkCompletedWithWrappedCancellationException(h1);
1478 >        checkCompletedWithWrappedCancellationException(h2);
1479 >        checkCompletedWithWrappedCancellationException(h3);
1480 >        checkCancelled(f);
1481 >        for (IncFunction r : rs) r.assertNotInvoked();
1482 >    }}
1483  
1484      /**
1485 <     * thenApply result completes exceptionally if source cancelled
1485 >     * thenApply result completes exceptionally if action does
1486       */
1487 <    public void testThenApply4() {
1488 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1489 <        CompletableFuture<Integer> g = f.thenApply(inc);
1490 <        assertTrue(f.cancel(true));
1491 <        checkCompletedWithWrappedCancellationException(g);
1492 <    }
1487 >    public void testThenApply_actionFailed() {
1488 >        for (ExecutionMode m : ExecutionMode.values())
1489 >        for (Integer v1 : new Integer[] { 1, null })
1490 >    {
1491 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1492 >        final FailingFunction[] rs = new FailingFunction[4];
1493 >        for (int i = 0; i < rs.length; i++) rs[i] = new FailingFunction(m);
1494 >
1495 >        final CompletableFuture<Integer> h0 = m.thenApply(f, rs[0]);
1496 >        final CompletableFuture<Integer> h1 = m.applyToEither(f, f, rs[1]);
1497 >        assertTrue(f.complete(v1));
1498 >        final CompletableFuture<Integer> h2 = m.thenApply(f, rs[2]);
1499 >        final CompletableFuture<Integer> h3 = m.applyToEither(f, f, rs[3]);
1500 >
1501 >        checkCompletedWithWrappedCFException(h0);
1502 >        checkCompletedWithWrappedCFException(h1);
1503 >        checkCompletedWithWrappedCFException(h2);
1504 >        checkCompletedWithWrappedCFException(h3);
1505 >        checkCompletedNormally(f, v1);
1506 >    }}
1507  
1508      /**
1509       * thenAccept result completes normally after normal completion of source
1510       */
1511 <    public void testThenAccept() {
1512 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1513 <        IncAction r = new IncAction();
1514 <        CompletableFuture<Void> g = f.thenAccept(r);
1515 <        f.complete(one);
1516 <        checkCompletedNormally(g, null);
1517 <        assertEquals(r.value, 2);
1518 <    }
1511 >    public void testThenAccept_normalCompletion() {
1512 >        for (ExecutionMode m : ExecutionMode.values())
1513 >        for (Integer v1 : new Integer[] { 1, null })
1514 >    {
1515 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1516 >        final NoopConsumer[] rs = new NoopConsumer[4];
1517 >        for (int i = 0; i < rs.length; i++) rs[i] = new NoopConsumer(m);
1518 >
1519 >        final CompletableFuture<Void> h0 = m.thenAccept(f, rs[0]);
1520 >        final CompletableFuture<Void> h1 = m.acceptEither(f, f, rs[1]);
1521 >        checkIncomplete(h0);
1522 >        checkIncomplete(h1);
1523 >        assertTrue(f.complete(v1));
1524 >        final CompletableFuture<Void> h2 = m.thenAccept(f, rs[2]);
1525 >        final CompletableFuture<Void> h3 = m.acceptEither(f, f, rs[3]);
1526 >
1527 >        checkCompletedNormally(h0, null);
1528 >        checkCompletedNormally(h1, null);
1529 >        checkCompletedNormally(h2, null);
1530 >        checkCompletedNormally(h3, null);
1531 >        checkCompletedNormally(f, v1);
1532 >        for (NoopConsumer r : rs) r.assertValue(v1);
1533 >    }}
1534  
1535      /**
1536       * thenAccept result completes exceptionally after exceptional
1537       * completion of source
1538       */
1539 <    public void testThenAccept2() {
1540 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1541 <        IncAction r = new IncAction();
1542 <        CompletableFuture<Void> g = f.thenAccept(r);
1543 <        f.completeExceptionally(new CFException());
1544 <        checkCompletedWithWrappedCFException(g);
1545 <    }
1546 <
1547 <    /**
1548 <     * thenAccept result completes exceptionally if action does
1549 <     */
1550 <    public void testThenAccept3() {
1551 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1552 <        FailingConsumer r = new FailingConsumer();
1553 <        CompletableFuture<Void> g = f.thenAccept(r);
1554 <        f.complete(one);
1555 <        checkCompletedWithWrappedCFException(g);
1556 <        assertTrue(r.ran);
1557 <    }
1539 >    public void testThenAccept_exceptionalCompletion() {
1540 >        for (ExecutionMode m : ExecutionMode.values())
1541 >    {
1542 >        final CFException ex = new CFException();
1543 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1544 >        final NoopConsumer[] rs = new NoopConsumer[4];
1545 >        for (int i = 0; i < rs.length; i++) rs[i] = new NoopConsumer(m);
1546 >
1547 >        final CompletableFuture<Void> h0 = m.thenAccept(f, rs[0]);
1548 >        final CompletableFuture<Void> h1 = m.acceptEither(f, f, rs[1]);
1549 >        assertTrue(f.completeExceptionally(ex));
1550 >        final CompletableFuture<Void> h2 = m.thenAccept(f, rs[2]);
1551 >        final CompletableFuture<Void> h3 = m.acceptEither(f, f, rs[3]);
1552 >
1553 >        checkCompletedWithWrappedException(h0, ex);
1554 >        checkCompletedWithWrappedException(h1, ex);
1555 >        checkCompletedWithWrappedException(h2, ex);
1556 >        checkCompletedWithWrappedException(h3, ex);
1557 >        checkCompletedExceptionally(f, ex);
1558 >        for (NoopConsumer r : rs) r.assertNotInvoked();
1559 >    }}
1560  
1561      /**
1562       * thenAccept result completes exceptionally if source cancelled
1563       */
1564 <    public void testThenAccept4() {
1565 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1566 <        IncAction r = new IncAction();
1567 <        CompletableFuture<Void> g = f.thenAccept(r);
1568 <        assertTrue(f.cancel(true));
1569 <        checkCompletedWithWrappedCancellationException(g);
1570 <    }
1571 <
1564 >    public void testThenAccept_sourceCancelled() {
1565 >        for (ExecutionMode m : ExecutionMode.values())
1566 >        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1567 >    {
1568 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1569 >        final NoopConsumer[] rs = new NoopConsumer[4];
1570 >        for (int i = 0; i < rs.length; i++) rs[i] = new NoopConsumer(m);
1571 >
1572 >        final CompletableFuture<Void> h0 = m.thenAccept(f, rs[0]);
1573 >        final CompletableFuture<Void> h1 = m.acceptEither(f, f, rs[1]);
1574 >        assertTrue(f.cancel(mayInterruptIfRunning));
1575 >        final CompletableFuture<Void> h2 = m.thenAccept(f, rs[2]);
1576 >        final CompletableFuture<Void> h3 = m.acceptEither(f, f, rs[3]);
1577 >
1578 >        checkCompletedWithWrappedCancellationException(h0);
1579 >        checkCompletedWithWrappedCancellationException(h1);
1580 >        checkCompletedWithWrappedCancellationException(h2);
1581 >        checkCompletedWithWrappedCancellationException(h3);
1582 >        checkCancelled(f);
1583 >        for (NoopConsumer r : rs) r.assertNotInvoked();
1584 >    }}
1585  
1586      /**
1587 <     * thenCombine result completes normally after normal completion of sources
1587 >     * thenAccept result completes exceptionally if action does
1588       */
1589 <    public void testThenCombine() {
1590 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1591 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1592 <        CompletableFuture<Integer> g = f.thenCombine(f2, add);
1593 <        f.complete(one);
1594 <        checkIncomplete(g);
1595 <        f2.complete(two);
1596 <        checkCompletedNormally(g, three);
1597 <
1598 <        f = new CompletableFuture<Integer>();
1599 <        f.complete(one);
1600 <        f2 = new CompletableFuture<Integer>();
1601 <        g = f.thenCombine(f2, add);
1602 <        checkIncomplete(g);
1603 <        f2.complete(two);
1604 <        checkCompletedNormally(g, three);
1605 <    }
1589 >    public void testThenAccept_actionFailed() {
1590 >        for (ExecutionMode m : ExecutionMode.values())
1591 >        for (Integer v1 : new Integer[] { 1, null })
1592 >    {
1593 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1594 >        final FailingConsumer[] rs = new FailingConsumer[4];
1595 >        for (int i = 0; i < rs.length; i++) rs[i] = new FailingConsumer(m);
1596 >
1597 >        final CompletableFuture<Void> h0 = m.thenAccept(f, rs[0]);
1598 >        final CompletableFuture<Void> h1 = m.acceptEither(f, f, rs[1]);
1599 >        assertTrue(f.complete(v1));
1600 >        final CompletableFuture<Void> h2 = m.thenAccept(f, rs[2]);
1601 >        final CompletableFuture<Void> h3 = m.acceptEither(f, f, rs[3]);
1602 >
1603 >        checkCompletedWithWrappedCFException(h0);
1604 >        checkCompletedWithWrappedCFException(h1);
1605 >        checkCompletedWithWrappedCFException(h2);
1606 >        checkCompletedWithWrappedCFException(h3);
1607 >        checkCompletedNormally(f, v1);
1608 >    }}
1609 >
1610 >    /**
1611 >     * thenCombine result completes normally after normal completion
1612 >     * of sources
1613 >     */
1614 >    public void testThenCombine_normalCompletion() {
1615 >        for (ExecutionMode m : ExecutionMode.values())
1616 >        for (boolean fFirst : new boolean[] { true, false })
1617 >        for (Integer v1 : new Integer[] { 1, null })
1618 >        for (Integer v2 : new Integer[] { 2, null })
1619 >    {
1620 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1621 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
1622 >        final SubtractFunction[] rs = new SubtractFunction[6];
1623 >        for (int i = 0; i < rs.length; i++) rs[i] = new SubtractFunction(m);
1624 >
1625 >        final CompletableFuture<Integer> fst =  fFirst ? f : g;
1626 >        final CompletableFuture<Integer> snd = !fFirst ? f : g;
1627 >        final Integer w1 =  fFirst ? v1 : v2;
1628 >        final Integer w2 = !fFirst ? v1 : v2;
1629 >
1630 >        final CompletableFuture<Integer> h0 = m.thenCombine(f, g, rs[0]);
1631 >        final CompletableFuture<Integer> h1 = m.thenCombine(fst, fst, rs[1]);
1632 >        assertTrue(fst.complete(w1));
1633 >        final CompletableFuture<Integer> h2 = m.thenCombine(f, g, rs[2]);
1634 >        final CompletableFuture<Integer> h3 = m.thenCombine(fst, fst, rs[3]);
1635 >        checkIncomplete(h0); rs[0].assertNotInvoked();
1636 >        checkIncomplete(h2); rs[2].assertNotInvoked();
1637 >        checkCompletedNormally(h1, subtract(w1, w1));
1638 >        checkCompletedNormally(h3, subtract(w1, w1));
1639 >        rs[1].assertValue(subtract(w1, w1));
1640 >        rs[3].assertValue(subtract(w1, w1));
1641 >        assertTrue(snd.complete(w2));
1642 >        final CompletableFuture<Integer> h4 = m.thenCombine(f, g, rs[4]);
1643 >
1644 >        checkCompletedNormally(h0, subtract(v1, v2));
1645 >        checkCompletedNormally(h2, subtract(v1, v2));
1646 >        checkCompletedNormally(h4, subtract(v1, v2));
1647 >        rs[0].assertValue(subtract(v1, v2));
1648 >        rs[2].assertValue(subtract(v1, v2));
1649 >        rs[4].assertValue(subtract(v1, v2));
1650 >
1651 >        checkCompletedNormally(f, v1);
1652 >        checkCompletedNormally(g, v2);
1653 >    }}
1654  
1655      /**
1656       * thenCombine result completes exceptionally after exceptional
1657       * completion of either source
1658       */
1659 <    public void testThenCombine2() {
1660 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1661 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1662 <        CompletableFuture<Integer> g = f.thenCombine(f2, add);
1663 <        f.completeExceptionally(new CFException());
1664 <        f2.complete(two);
1665 <        checkCompletedWithWrappedCFException(g);
1666 <
1667 <        f = new CompletableFuture<Integer>();
1668 <        f.complete(one);
1669 <        f2 = new CompletableFuture<Integer>();
1670 <        g = f.thenCombine(f2, add);
1671 <        f2.completeExceptionally(new CFException());
1672 <        checkCompletedWithWrappedCFException(g);
1673 <    }
1659 >    public void testThenCombine_exceptionalCompletion() throws Throwable {
1660 >        for (ExecutionMode m : ExecutionMode.values())
1661 >        for (boolean fFirst : new boolean[] { true, false })
1662 >        for (boolean failFirst : new boolean[] { true, false })
1663 >        for (Integer v1 : new Integer[] { 1, null })
1664 >    {
1665 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1666 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
1667 >        final CFException ex = new CFException();
1668 >        final SubtractFunction r1 = new SubtractFunction(m);
1669 >        final SubtractFunction r2 = new SubtractFunction(m);
1670 >        final SubtractFunction r3 = new SubtractFunction(m);
1671 >
1672 >        final CompletableFuture<Integer> fst =  fFirst ? f : g;
1673 >        final CompletableFuture<Integer> snd = !fFirst ? f : g;
1674 >        final Callable<Boolean> complete1 = failFirst ?
1675 >            () -> fst.completeExceptionally(ex) :
1676 >            () -> fst.complete(v1);
1677 >        final Callable<Boolean> complete2 = failFirst ?
1678 >            () -> snd.complete(v1) :
1679 >            () -> snd.completeExceptionally(ex);
1680 >
1681 >        final CompletableFuture<Integer> h1 = m.thenCombine(f, g, r1);
1682 >        assertTrue(complete1.call());
1683 >        final CompletableFuture<Integer> h2 = m.thenCombine(f, g, r2);
1684 >        checkIncomplete(h1);
1685 >        checkIncomplete(h2);
1686 >        assertTrue(complete2.call());
1687 >        final CompletableFuture<Integer> h3 = m.thenCombine(f, g, r3);
1688 >
1689 >        checkCompletedWithWrappedException(h1, ex);
1690 >        checkCompletedWithWrappedException(h2, ex);
1691 >        checkCompletedWithWrappedException(h3, ex);
1692 >        r1.assertNotInvoked();
1693 >        r2.assertNotInvoked();
1694 >        r3.assertNotInvoked();
1695 >        checkCompletedNormally(failFirst ? snd : fst, v1);
1696 >        checkCompletedExceptionally(failFirst ? fst : snd, ex);
1697 >    }}
1698  
1699      /**
1700 <     * thenCombine result completes exceptionally if action does
1700 >     * thenCombine result completes exceptionally if either source cancelled
1701       */
1702 <    public void testThenCombine3() {
1703 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1704 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1705 <        FailingBiFunction r = new FailingBiFunction();
1706 <        CompletableFuture<Integer> g = f.thenCombine(f2, r);
1707 <        f.complete(one);
1708 <        checkIncomplete(g);
1709 <        f2.complete(two);
1710 <        checkCompletedWithWrappedCFException(g);
1711 <    }
1702 >    public void testThenCombine_sourceCancelled() throws Throwable {
1703 >        for (ExecutionMode m : ExecutionMode.values())
1704 >        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1705 >        for (boolean fFirst : new boolean[] { true, false })
1706 >        for (boolean failFirst : new boolean[] { true, false })
1707 >        for (Integer v1 : new Integer[] { 1, null })
1708 >    {
1709 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1710 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
1711 >        final SubtractFunction r1 = new SubtractFunction(m);
1712 >        final SubtractFunction r2 = new SubtractFunction(m);
1713 >        final SubtractFunction r3 = new SubtractFunction(m);
1714 >
1715 >        final CompletableFuture<Integer> fst =  fFirst ? f : g;
1716 >        final CompletableFuture<Integer> snd = !fFirst ? f : g;
1717 >        final Callable<Boolean> complete1 = failFirst ?
1718 >            () -> fst.cancel(mayInterruptIfRunning) :
1719 >            () -> fst.complete(v1);
1720 >        final Callable<Boolean> complete2 = failFirst ?
1721 >            () -> snd.complete(v1) :
1722 >            () -> snd.cancel(mayInterruptIfRunning);
1723 >
1724 >        final CompletableFuture<Integer> h1 = m.thenCombine(f, g, r1);
1725 >        assertTrue(complete1.call());
1726 >        final CompletableFuture<Integer> h2 = m.thenCombine(f, g, r2);
1727 >        checkIncomplete(h1);
1728 >        checkIncomplete(h2);
1729 >        assertTrue(complete2.call());
1730 >        final CompletableFuture<Integer> h3 = m.thenCombine(f, g, r3);
1731 >
1732 >        checkCompletedWithWrappedCancellationException(h1);
1733 >        checkCompletedWithWrappedCancellationException(h2);
1734 >        checkCompletedWithWrappedCancellationException(h3);
1735 >        r1.assertNotInvoked();
1736 >        r2.assertNotInvoked();
1737 >        r3.assertNotInvoked();
1738 >        checkCompletedNormally(failFirst ? snd : fst, v1);
1739 >        checkCancelled(failFirst ? fst : snd);
1740 >    }}
1741  
1742      /**
1743 <     * thenCombine result completes exceptionally if either source cancelled
1743 >     * thenCombine result completes exceptionally if action does
1744       */
1745 <    public void testThenCombine4() {
1746 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1747 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1748 <        CompletableFuture<Integer> g = f.thenCombine(f2, add);
1749 <        assertTrue(f.cancel(true));
1750 <        f2.complete(two);
1751 <        checkCompletedWithWrappedCancellationException(g);
1752 <        f = new CompletableFuture<Integer>();
1753 <        f2 = new CompletableFuture<Integer>();
1754 <        g = f.thenCombine(f2, add);
1755 <        f.complete(one);
1756 <        assertTrue(f2.cancel(true));
1757 <        checkCompletedWithWrappedCancellationException(g);
1758 <    }
1745 >    public void testThenCombine_actionFailed() {
1746 >        for (ExecutionMode m : ExecutionMode.values())
1747 >        for (boolean fFirst : new boolean[] { true, false })
1748 >        for (Integer v1 : new Integer[] { 1, null })
1749 >        for (Integer v2 : new Integer[] { 2, null })
1750 >    {
1751 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1752 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
1753 >        final FailingBiFunction r1 = new FailingBiFunction(m);
1754 >        final FailingBiFunction r2 = new FailingBiFunction(m);
1755 >        final FailingBiFunction r3 = new FailingBiFunction(m);
1756 >
1757 >        final CompletableFuture<Integer> fst =  fFirst ? f : g;
1758 >        final CompletableFuture<Integer> snd = !fFirst ? f : g;
1759 >        final Integer w1 =  fFirst ? v1 : v2;
1760 >        final Integer w2 = !fFirst ? v1 : v2;
1761 >
1762 >        final CompletableFuture<Integer> h1 = m.thenCombine(f, g, r1);
1763 >        assertTrue(fst.complete(w1));
1764 >        final CompletableFuture<Integer> h2 = m.thenCombine(f, g, r2);
1765 >        assertTrue(snd.complete(w2));
1766 >        final CompletableFuture<Integer> h3 = m.thenCombine(f, g, r3);
1767 >
1768 >        checkCompletedWithWrappedCFException(h1);
1769 >        checkCompletedWithWrappedCFException(h2);
1770 >        checkCompletedWithWrappedCFException(h3);
1771 >        r1.assertInvoked();
1772 >        r2.assertInvoked();
1773 >        r3.assertInvoked();
1774 >        checkCompletedNormally(f, v1);
1775 >        checkCompletedNormally(g, v2);
1776 >    }}
1777  
1778      /**
1779       * thenAcceptBoth result completes normally after normal
1780       * completion of sources
1781       */
1782 <    public void testThenAcceptBoth() {
1783 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1784 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1785 <        AddAction r = new AddAction();
1786 <        CompletableFuture<Void> g = f.thenAcceptBoth(f2, r);
1787 <        f.complete(one);
1788 <        checkIncomplete(g);
1789 <        f2.complete(two);
1790 <        checkCompletedNormally(g, null);
1791 <        assertEquals(r.value, 3);
1792 <
1793 <        r = new AddAction();
1794 <        f = new CompletableFuture<Integer>();
1795 <        f.complete(one);
1796 <        f2 = new CompletableFuture<Integer>();
1797 <        g = f.thenAcceptBoth(f2, r);
1798 <        checkIncomplete(g);
1799 <        f2.complete(two);
1800 <        checkCompletedNormally(g, null);
1801 <        assertEquals(r.value, 3);
1802 <    }
1782 >    public void testThenAcceptBoth_normalCompletion() {
1783 >        for (ExecutionMode m : ExecutionMode.values())
1784 >        for (boolean fFirst : new boolean[] { true, false })
1785 >        for (Integer v1 : new Integer[] { 1, null })
1786 >        for (Integer v2 : new Integer[] { 2, null })
1787 >    {
1788 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1789 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
1790 >        final SubtractAction r1 = new SubtractAction(m);
1791 >        final SubtractAction r2 = new SubtractAction(m);
1792 >        final SubtractAction r3 = new SubtractAction(m);
1793 >
1794 >        final CompletableFuture<Integer> fst =  fFirst ? f : g;
1795 >        final CompletableFuture<Integer> snd = !fFirst ? f : g;
1796 >        final Integer w1 =  fFirst ? v1 : v2;
1797 >        final Integer w2 = !fFirst ? v1 : v2;
1798 >
1799 >        final CompletableFuture<Void> h1 = m.thenAcceptBoth(f, g, r1);
1800 >        assertTrue(fst.complete(w1));
1801 >        final CompletableFuture<Void> h2 = m.thenAcceptBoth(f, g, r2);
1802 >        checkIncomplete(h1);
1803 >        checkIncomplete(h2);
1804 >        r1.assertNotInvoked();
1805 >        r2.assertNotInvoked();
1806 >        assertTrue(snd.complete(w2));
1807 >        final CompletableFuture<Void> h3 = m.thenAcceptBoth(f, g, r3);
1808 >
1809 >        checkCompletedNormally(h1, null);
1810 >        checkCompletedNormally(h2, null);
1811 >        checkCompletedNormally(h3, null);
1812 >        r1.assertValue(subtract(v1, v2));
1813 >        r2.assertValue(subtract(v1, v2));
1814 >        r3.assertValue(subtract(v1, v2));
1815 >        checkCompletedNormally(f, v1);
1816 >        checkCompletedNormally(g, v2);
1817 >    }}
1818  
1819      /**
1820       * thenAcceptBoth result completes exceptionally after exceptional
1821       * completion of either source
1822       */
1823 <    public void testThenAcceptBoth2() {
1824 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1825 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1826 <        AddAction r = new AddAction();
1827 <        CompletableFuture<Void> g = f.thenAcceptBoth(f2, r);
1828 <        f.completeExceptionally(new CFException());
1829 <        f2.complete(two);
1830 <        checkCompletedWithWrappedCFException(g);
1831 <
1832 <        r = new AddAction();
1833 <        f = new CompletableFuture<Integer>();
1834 <        f.complete(one);
1835 <        f2 = new CompletableFuture<Integer>();
1836 <        g = f.thenAcceptBoth(f2, r);
1837 <        f2.completeExceptionally(new CFException());
1838 <        checkCompletedWithWrappedCFException(g);
1839 <    }
1823 >    public void testThenAcceptBoth_exceptionalCompletion() throws Throwable {
1824 >        for (ExecutionMode m : ExecutionMode.values())
1825 >        for (boolean fFirst : new boolean[] { true, false })
1826 >        for (boolean failFirst : new boolean[] { true, false })
1827 >        for (Integer v1 : new Integer[] { 1, null })
1828 >    {
1829 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1830 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
1831 >        final CFException ex = new CFException();
1832 >        final SubtractAction r1 = new SubtractAction(m);
1833 >        final SubtractAction r2 = new SubtractAction(m);
1834 >        final SubtractAction r3 = new SubtractAction(m);
1835 >
1836 >        final CompletableFuture<Integer> fst =  fFirst ? f : g;
1837 >        final CompletableFuture<Integer> snd = !fFirst ? f : g;
1838 >        final Callable<Boolean> complete1 = failFirst ?
1839 >            () -> fst.completeExceptionally(ex) :
1840 >            () -> fst.complete(v1);
1841 >        final Callable<Boolean> complete2 = failFirst ?
1842 >            () -> snd.complete(v1) :
1843 >            () -> snd.completeExceptionally(ex);
1844 >
1845 >        final CompletableFuture<Void> h1 = m.thenAcceptBoth(f, g, r1);
1846 >        assertTrue(complete1.call());
1847 >        final CompletableFuture<Void> h2 = m.thenAcceptBoth(f, g, r2);
1848 >        checkIncomplete(h1);
1849 >        checkIncomplete(h2);
1850 >        assertTrue(complete2.call());
1851 >        final CompletableFuture<Void> h3 = m.thenAcceptBoth(f, g, r3);
1852 >
1853 >        checkCompletedWithWrappedException(h1, ex);
1854 >        checkCompletedWithWrappedException(h2, ex);
1855 >        checkCompletedWithWrappedException(h3, ex);
1856 >        r1.assertNotInvoked();
1857 >        r2.assertNotInvoked();
1858 >        r3.assertNotInvoked();
1859 >        checkCompletedNormally(failFirst ? snd : fst, v1);
1860 >        checkCompletedExceptionally(failFirst ? fst : snd, ex);
1861 >    }}
1862  
1863      /**
1864 <     * thenAcceptBoth result completes exceptionally if action does
1864 >     * thenAcceptBoth result completes exceptionally if either source cancelled
1865       */
1866 <    public void testThenAcceptBoth3() {
1867 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1868 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1869 <        FailingBiConsumer r = new FailingBiConsumer();
1870 <        CompletableFuture<Void> g = f.thenAcceptBoth(f2, r);
1871 <        f.complete(one);
1872 <        checkIncomplete(g);
1873 <        f2.complete(two);
1874 <        checkCompletedWithWrappedCFException(g);
1875 <    }
1866 >    public void testThenAcceptBoth_sourceCancelled() throws Throwable {
1867 >        for (ExecutionMode m : ExecutionMode.values())
1868 >        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1869 >        for (boolean fFirst : new boolean[] { true, false })
1870 >        for (boolean failFirst : new boolean[] { true, false })
1871 >        for (Integer v1 : new Integer[] { 1, null })
1872 >    {
1873 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1874 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
1875 >        final SubtractAction r1 = new SubtractAction(m);
1876 >        final SubtractAction r2 = new SubtractAction(m);
1877 >        final SubtractAction r3 = new SubtractAction(m);
1878 >
1879 >        final CompletableFuture<Integer> fst =  fFirst ? f : g;
1880 >        final CompletableFuture<Integer> snd = !fFirst ? f : g;
1881 >        final Callable<Boolean> complete1 = failFirst ?
1882 >            () -> fst.cancel(mayInterruptIfRunning) :
1883 >            () -> fst.complete(v1);
1884 >        final Callable<Boolean> complete2 = failFirst ?
1885 >            () -> snd.complete(v1) :
1886 >            () -> snd.cancel(mayInterruptIfRunning);
1887 >
1888 >        final CompletableFuture<Void> h1 = m.thenAcceptBoth(f, g, r1);
1889 >        assertTrue(complete1.call());
1890 >        final CompletableFuture<Void> h2 = m.thenAcceptBoth(f, g, r2);
1891 >        checkIncomplete(h1);
1892 >        checkIncomplete(h2);
1893 >        assertTrue(complete2.call());
1894 >        final CompletableFuture<Void> h3 = m.thenAcceptBoth(f, g, r3);
1895 >
1896 >        checkCompletedWithWrappedCancellationException(h1);
1897 >        checkCompletedWithWrappedCancellationException(h2);
1898 >        checkCompletedWithWrappedCancellationException(h3);
1899 >        r1.assertNotInvoked();
1900 >        r2.assertNotInvoked();
1901 >        r3.assertNotInvoked();
1902 >        checkCompletedNormally(failFirst ? snd : fst, v1);
1903 >        checkCancelled(failFirst ? fst : snd);
1904 >    }}
1905  
1906      /**
1907 <     * thenAcceptBoth result completes exceptionally if either source cancelled
1907 >     * thenAcceptBoth result completes exceptionally if action does
1908       */
1909 <    public void testThenAcceptBoth4() {
1910 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1911 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1912 <        AddAction r = new AddAction();
1913 <        CompletableFuture<Void> g = f.thenAcceptBoth(f2, r);
1914 <        assertTrue(f.cancel(true));
1915 <        f2.complete(two);
1916 <        checkCompletedWithWrappedCancellationException(g);
1917 <        f = new CompletableFuture<Integer>();
1918 <        f2 = new CompletableFuture<Integer>();
1919 <        r = new AddAction();
1920 <        g = f.thenAcceptBoth(f2, r);
1921 <        f.complete(one);
1922 <        assertTrue(f2.cancel(true));
1923 <        checkCompletedWithWrappedCancellationException(g);
1924 <    }
1909 >    public void testThenAcceptBoth_actionFailed() {
1910 >        for (ExecutionMode m : ExecutionMode.values())
1911 >        for (boolean fFirst : new boolean[] { true, false })
1912 >        for (Integer v1 : new Integer[] { 1, null })
1913 >        for (Integer v2 : new Integer[] { 2, null })
1914 >    {
1915 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1916 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
1917 >        final FailingBiConsumer r1 = new FailingBiConsumer(m);
1918 >        final FailingBiConsumer r2 = new FailingBiConsumer(m);
1919 >        final FailingBiConsumer r3 = new FailingBiConsumer(m);
1920 >
1921 >        final CompletableFuture<Integer> fst =  fFirst ? f : g;
1922 >        final CompletableFuture<Integer> snd = !fFirst ? f : g;
1923 >        final Integer w1 =  fFirst ? v1 : v2;
1924 >        final Integer w2 = !fFirst ? v1 : v2;
1925 >
1926 >        final CompletableFuture<Void> h1 = m.thenAcceptBoth(f, g, r1);
1927 >        assertTrue(fst.complete(w1));
1928 >        final CompletableFuture<Void> h2 = m.thenAcceptBoth(f, g, r2);
1929 >        assertTrue(snd.complete(w2));
1930 >        final CompletableFuture<Void> h3 = m.thenAcceptBoth(f, g, r3);
1931 >
1932 >        checkCompletedWithWrappedCFException(h1);
1933 >        checkCompletedWithWrappedCFException(h2);
1934 >        checkCompletedWithWrappedCFException(h3);
1935 >        r1.assertInvoked();
1936 >        r2.assertInvoked();
1937 >        r3.assertInvoked();
1938 >        checkCompletedNormally(f, v1);
1939 >        checkCompletedNormally(g, v2);
1940 >    }}
1941  
1942      /**
1943       * runAfterBoth result completes normally after normal
1944       * completion of sources
1945       */
1946 <    public void testRunAfterBoth() {
1947 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1948 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1949 <        Noop r = new Noop();
1950 <        CompletableFuture<Void> g = f.runAfterBoth(f2, r);
1951 <        f.complete(one);
1952 <        checkIncomplete(g);
1953 <        f2.complete(two);
1954 <        checkCompletedNormally(g, null);
1955 <        assertTrue(r.ran);
1956 <
1957 <        r = new Noop();
1958 <        f = new CompletableFuture<Integer>();
1959 <        f.complete(one);
1960 <        f2 = new CompletableFuture<Integer>();
1961 <        g = f.runAfterBoth(f2, r);
1962 <        checkIncomplete(g);
1963 <        f2.complete(two);
1964 <        checkCompletedNormally(g, null);
1965 <        assertTrue(r.ran);
1966 <    }
1946 >    public void testRunAfterBoth_normalCompletion() {
1947 >        for (ExecutionMode m : ExecutionMode.values())
1948 >        for (boolean fFirst : new boolean[] { true, false })
1949 >        for (Integer v1 : new Integer[] { 1, null })
1950 >        for (Integer v2 : new Integer[] { 2, null })
1951 >    {
1952 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1953 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
1954 >        final Noop r1 = new Noop(m);
1955 >        final Noop r2 = new Noop(m);
1956 >        final Noop r3 = new Noop(m);
1957 >
1958 >        final CompletableFuture<Integer> fst =  fFirst ? f : g;
1959 >        final CompletableFuture<Integer> snd = !fFirst ? f : g;
1960 >        final Integer w1 =  fFirst ? v1 : v2;
1961 >        final Integer w2 = !fFirst ? v1 : v2;
1962 >
1963 >        final CompletableFuture<Void> h1 = m.runAfterBoth(f, g, r1);
1964 >        assertTrue(fst.complete(w1));
1965 >        final CompletableFuture<Void> h2 = m.runAfterBoth(f, g, r2);
1966 >        checkIncomplete(h1);
1967 >        checkIncomplete(h2);
1968 >        r1.assertNotInvoked();
1969 >        r2.assertNotInvoked();
1970 >        assertTrue(snd.complete(w2));
1971 >        final CompletableFuture<Void> h3 = m.runAfterBoth(f, g, r3);
1972 >
1973 >        checkCompletedNormally(h1, null);
1974 >        checkCompletedNormally(h2, null);
1975 >        checkCompletedNormally(h3, null);
1976 >        r1.assertInvoked();
1977 >        r2.assertInvoked();
1978 >        r3.assertInvoked();
1979 >        checkCompletedNormally(f, v1);
1980 >        checkCompletedNormally(g, v2);
1981 >    }}
1982  
1983      /**
1984       * runAfterBoth result completes exceptionally after exceptional
1985       * completion of either source
1986       */
1987 <    public void testRunAfterBoth2() {
1988 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1989 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1990 <        Noop r = new Noop();
1991 <        CompletableFuture<Void> g = f.runAfterBoth(f2, r);
1992 <        f.completeExceptionally(new CFException());
1993 <        f2.complete(two);
1994 <        checkCompletedWithWrappedCFException(g);
1995 <
1996 <        r = new Noop();
1997 <        f = new CompletableFuture<Integer>();
1998 <        f.complete(one);
1999 <        f2 = new CompletableFuture<Integer>();
2000 <        g = f.runAfterBoth(f2, r);
2001 <        f2.completeExceptionally(new CFException());
2002 <        checkCompletedWithWrappedCFException(g);
2003 <    }
1987 >    public void testRunAfterBoth_exceptionalCompletion() throws Throwable {
1988 >        for (ExecutionMode m : ExecutionMode.values())
1989 >        for (boolean fFirst : new boolean[] { true, false })
1990 >        for (boolean failFirst : new boolean[] { true, false })
1991 >        for (Integer v1 : new Integer[] { 1, null })
1992 >    {
1993 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1994 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
1995 >        final CFException ex = new CFException();
1996 >        final Noop r1 = new Noop(m);
1997 >        final Noop r2 = new Noop(m);
1998 >        final Noop r3 = new Noop(m);
1999 >
2000 >        final CompletableFuture<Integer> fst =  fFirst ? f : g;
2001 >        final CompletableFuture<Integer> snd = !fFirst ? f : g;
2002 >        final Callable<Boolean> complete1 = failFirst ?
2003 >            () -> fst.completeExceptionally(ex) :
2004 >            () -> fst.complete(v1);
2005 >        final Callable<Boolean> complete2 = failFirst ?
2006 >            () -> snd.complete(v1) :
2007 >            () -> snd.completeExceptionally(ex);
2008 >
2009 >        final CompletableFuture<Void> h1 = m.runAfterBoth(f, g, r1);
2010 >        assertTrue(complete1.call());
2011 >        final CompletableFuture<Void> h2 = m.runAfterBoth(f, g, r2);
2012 >        checkIncomplete(h1);
2013 >        checkIncomplete(h2);
2014 >        assertTrue(complete2.call());
2015 >        final CompletableFuture<Void> h3 = m.runAfterBoth(f, g, r3);
2016 >
2017 >        checkCompletedWithWrappedException(h1, ex);
2018 >        checkCompletedWithWrappedException(h2, ex);
2019 >        checkCompletedWithWrappedException(h3, ex);
2020 >        r1.assertNotInvoked();
2021 >        r2.assertNotInvoked();
2022 >        r3.assertNotInvoked();
2023 >        checkCompletedNormally(failFirst ? snd : fst, v1);
2024 >        checkCompletedExceptionally(failFirst ? fst : snd, ex);
2025 >    }}
2026  
2027      /**
2028 <     * runAfterBoth result completes exceptionally if action does
2028 >     * runAfterBoth result completes exceptionally if either source cancelled
2029       */
2030 <    public void testRunAfterBoth3() {
2031 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
2032 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
2033 <        FailingNoop r = new FailingNoop();
2034 <        CompletableFuture<Void> g = f.runAfterBoth(f2, r);
2035 <        f.complete(one);
2036 <        checkIncomplete(g);
2037 <        f2.complete(two);
2038 <        checkCompletedWithWrappedCFException(g);
2039 <    }
2030 >    public void testRunAfterBoth_sourceCancelled() throws Throwable {
2031 >        for (ExecutionMode m : ExecutionMode.values())
2032 >        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2033 >        for (boolean fFirst : new boolean[] { true, false })
2034 >        for (boolean failFirst : new boolean[] { true, false })
2035 >        for (Integer v1 : new Integer[] { 1, null })
2036 >    {
2037 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
2038 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
2039 >        final Noop r1 = new Noop(m);
2040 >        final Noop r2 = new Noop(m);
2041 >        final Noop r3 = new Noop(m);
2042 >
2043 >        final CompletableFuture<Integer> fst =  fFirst ? f : g;
2044 >        final CompletableFuture<Integer> snd = !fFirst ? f : g;
2045 >        final Callable<Boolean> complete1 = failFirst ?
2046 >            () -> fst.cancel(mayInterruptIfRunning) :
2047 >            () -> fst.complete(v1);
2048 >        final Callable<Boolean> complete2 = failFirst ?
2049 >            () -> snd.complete(v1) :
2050 >            () -> snd.cancel(mayInterruptIfRunning);
2051 >
2052 >        final CompletableFuture<Void> h1 = m.runAfterBoth(f, g, r1);
2053 >        assertTrue(complete1.call());
2054 >        final CompletableFuture<Void> h2 = m.runAfterBoth(f, g, r2);
2055 >        checkIncomplete(h1);
2056 >        checkIncomplete(h2);
2057 >        assertTrue(complete2.call());
2058 >        final CompletableFuture<Void> h3 = m.runAfterBoth(f, g, r3);
2059 >
2060 >        checkCompletedWithWrappedCancellationException(h1);
2061 >        checkCompletedWithWrappedCancellationException(h2);
2062 >        checkCompletedWithWrappedCancellationException(h3);
2063 >        r1.assertNotInvoked();
2064 >        r2.assertNotInvoked();
2065 >        r3.assertNotInvoked();
2066 >        checkCompletedNormally(failFirst ? snd : fst, v1);
2067 >        checkCancelled(failFirst ? fst : snd);
2068 >    }}
2069  
2070      /**
2071 <     * runAfterBoth result completes exceptionally if either source cancelled
2071 >     * runAfterBoth result completes exceptionally if action does
2072       */
2073 <    public void testRunAfterBoth4() {
2074 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
2075 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
2076 <        Noop r = new Noop();
2077 <        CompletableFuture<Void> g = f.runAfterBoth(f2, r);
2078 <        assertTrue(f.cancel(true));
2079 <        f2.complete(two);
2080 <        checkCompletedWithWrappedCancellationException(g);
2081 <        f = new CompletableFuture<Integer>();
2082 <        f2 = new CompletableFuture<Integer>();
2083 <        r = new Noop();
2084 <        g = f.runAfterBoth(f2, r);
2085 <        f.complete(one);
2086 <        assertTrue(f2.cancel(true));
2087 <        checkCompletedWithWrappedCancellationException(g);
2088 <    }
2073 >    public void testRunAfterBoth_actionFailed() {
2074 >        for (ExecutionMode m : ExecutionMode.values())
2075 >        for (boolean fFirst : new boolean[] { true, false })
2076 >        for (Integer v1 : new Integer[] { 1, null })
2077 >        for (Integer v2 : new Integer[] { 2, null })
2078 >    {
2079 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
2080 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
2081 >        final FailingRunnable r1 = new FailingRunnable(m);
2082 >        final FailingRunnable r2 = new FailingRunnable(m);
2083 >        final FailingRunnable r3 = new FailingRunnable(m);
2084 >
2085 >        final CompletableFuture<Integer> fst =  fFirst ? f : g;
2086 >        final CompletableFuture<Integer> snd = !fFirst ? f : g;
2087 >        final Integer w1 =  fFirst ? v1 : v2;
2088 >        final Integer w2 = !fFirst ? v1 : v2;
2089 >
2090 >        final CompletableFuture<Void> h1 = m.runAfterBoth(f, g, r1);
2091 >        assertTrue(fst.complete(w1));
2092 >        final CompletableFuture<Void> h2 = m.runAfterBoth(f, g, r2);
2093 >        assertTrue(snd.complete(w2));
2094 >        final CompletableFuture<Void> h3 = m.runAfterBoth(f, g, r3);
2095 >
2096 >        checkCompletedWithWrappedCFException(h1);
2097 >        checkCompletedWithWrappedCFException(h2);
2098 >        checkCompletedWithWrappedCFException(h3);
2099 >        r1.assertInvoked();
2100 >        r2.assertInvoked();
2101 >        r3.assertInvoked();
2102 >        checkCompletedNormally(f, v1);
2103 >        checkCompletedNormally(g, v2);
2104 >    }}
2105  
2106      /**
2107       * applyToEither result completes normally after normal completion
2108       * of either source
2109       */
2110 <    public void testApplyToEither() {
2111 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
2112 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
2113 <        CompletableFuture<Integer> g = f.applyToEither(f2, inc);
2114 <        f.complete(one);
2115 <        checkCompletedNormally(g, two);
2116 <        f2.complete(one);
2117 <        checkCompletedNormally(g, two);
2118 <
2119 <        f = new CompletableFuture<Integer>();
2120 <        f.complete(one);
2121 <        f2 = new CompletableFuture<Integer>();
2122 <        g = f.applyToEither(f2, inc);
2123 <        checkCompletedNormally(g, two);
2124 <    }
2110 >    public void testApplyToEither_normalCompletion() {
2111 >        for (ExecutionMode m : ExecutionMode.values())
2112 >        for (Integer v1 : new Integer[] { 1, null })
2113 >        for (Integer v2 : new Integer[] { 2, null })
2114 >    {
2115 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
2116 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
2117 >        final IncFunction[] rs = new IncFunction[6];
2118 >        for (int i = 0; i < rs.length; i++) rs[i] = new IncFunction(m);
2119 >
2120 >        final CompletableFuture<Integer> h0 = m.applyToEither(f, g, rs[0]);
2121 >        final CompletableFuture<Integer> h1 = m.applyToEither(g, f, rs[1]);
2122 >        checkIncomplete(h0);
2123 >        checkIncomplete(h1);
2124 >        rs[0].assertNotInvoked();
2125 >        rs[1].assertNotInvoked();
2126 >        f.complete(v1);
2127 >        checkCompletedNormally(h0, inc(v1));
2128 >        checkCompletedNormally(h1, inc(v1));
2129 >        final CompletableFuture<Integer> h2 = m.applyToEither(f, g, rs[2]);
2130 >        final CompletableFuture<Integer> h3 = m.applyToEither(g, f, rs[3]);
2131 >        checkCompletedNormally(h2, inc(v1));
2132 >        checkCompletedNormally(h3, inc(v1));
2133 >        g.complete(v2);
2134 >
2135 >        // unspecified behavior - both source completions available
2136 >        final CompletableFuture<Integer> h4 = m.applyToEither(f, g, rs[4]);
2137 >        final CompletableFuture<Integer> h5 = m.applyToEither(g, f, rs[5]);
2138 >        rs[4].assertValue(h4.join());
2139 >        rs[5].assertValue(h5.join());
2140 >        assertTrue(Objects.equals(inc(v1), h4.join()) ||
2141 >                   Objects.equals(inc(v2), h4.join()));
2142 >        assertTrue(Objects.equals(inc(v1), h5.join()) ||
2143 >                   Objects.equals(inc(v2), h5.join()));
2144 >
2145 >        checkCompletedNormally(f, v1);
2146 >        checkCompletedNormally(g, v2);
2147 >        checkCompletedNormally(h0, inc(v1));
2148 >        checkCompletedNormally(h1, inc(v1));
2149 >        checkCompletedNormally(h2, inc(v1));
2150 >        checkCompletedNormally(h3, inc(v1));
2151 >        for (int i = 0; i < 4; i++) rs[i].assertValue(inc(v1));
2152 >    }}
2153  
2154      /**
2155       * applyToEither result completes exceptionally after exceptional
2156       * completion of either source
2157       */
2158 <    public void testApplyToEither2() {
2159 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
2160 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
2161 <        CompletableFuture<Integer> g = f.applyToEither(f2, inc);
2162 <        f.completeExceptionally(new CFException());
2163 <        f2.complete(one);
2164 <        checkCompletedWithWrappedCFException(g);
2158 >    public void testApplyToEither_exceptionalCompletion() {
2159 >        for (ExecutionMode m : ExecutionMode.values())
2160 >        for (Integer v1 : new Integer[] { 1, null })
2161 >    {
2162 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
2163 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
2164 >        final CFException ex = new CFException();
2165 >        final IncFunction[] rs = new IncFunction[6];
2166 >        for (int i = 0; i < rs.length; i++) rs[i] = new IncFunction(m);
2167 >
2168 >        final CompletableFuture<Integer> h0 = m.applyToEither(f, g, rs[0]);
2169 >        final CompletableFuture<Integer> h1 = m.applyToEither(g, f, rs[1]);
2170 >        checkIncomplete(h0);
2171 >        checkIncomplete(h1);
2172 >        rs[0].assertNotInvoked();
2173 >        rs[1].assertNotInvoked();
2174 >        f.completeExceptionally(ex);
2175 >        checkCompletedWithWrappedException(h0, ex);
2176 >        checkCompletedWithWrappedException(h1, ex);
2177 >        final CompletableFuture<Integer> h2 = m.applyToEither(f, g, rs[2]);
2178 >        final CompletableFuture<Integer> h3 = m.applyToEither(g, f, rs[3]);
2179 >        checkCompletedWithWrappedException(h2, ex);
2180 >        checkCompletedWithWrappedException(h3, ex);
2181 >        g.complete(v1);
2182 >
2183 >        // unspecified behavior - both source completions available
2184 >        final CompletableFuture<Integer> h4 = m.applyToEither(f, g, rs[4]);
2185 >        final CompletableFuture<Integer> h5 = m.applyToEither(g, f, rs[5]);
2186 >        try {
2187 >            assertEquals(inc(v1), h4.join());
2188 >            rs[4].assertValue(inc(v1));
2189 >        } catch (CompletionException ok) {
2190 >            checkCompletedWithWrappedException(h4, ex);
2191 >            rs[4].assertNotInvoked();
2192 >        }
2193 >        try {
2194 >            assertEquals(inc(v1), h5.join());
2195 >            rs[5].assertValue(inc(v1));
2196 >        } catch (CompletionException ok) {
2197 >            checkCompletedWithWrappedException(h5, ex);
2198 >            rs[5].assertNotInvoked();
2199 >        }
2200 >
2201 >        checkCompletedExceptionally(f, ex);
2202 >        checkCompletedNormally(g, v1);
2203 >        checkCompletedWithWrappedException(h0, ex);
2204 >        checkCompletedWithWrappedException(h1, ex);
2205 >        checkCompletedWithWrappedException(h2, ex);
2206 >        checkCompletedWithWrappedException(h3, ex);
2207 >        checkCompletedWithWrappedException(h4, ex);
2208 >        for (int i = 0; i < 4; i++) rs[i].assertNotInvoked();
2209 >    }}
2210 >
2211 >    public void testApplyToEither_exceptionalCompletion2() {
2212 >        for (ExecutionMode m : ExecutionMode.values())
2213 >        for (boolean fFirst : new boolean[] { true, false })
2214 >        for (Integer v1 : new Integer[] { 1, null })
2215 >    {
2216 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
2217 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
2218 >        final CFException ex = new CFException();
2219 >        final IncFunction[] rs = new IncFunction[6];
2220 >        for (int i = 0; i < rs.length; i++) rs[i] = new IncFunction(m);
2221 >
2222 >        final CompletableFuture<Integer> h0 = m.applyToEither(f, g, rs[0]);
2223 >        final CompletableFuture<Integer> h1 = m.applyToEither(g, f, rs[1]);
2224 >        assertTrue(fFirst ? f.complete(v1) : g.completeExceptionally(ex));
2225 >        assertTrue(!fFirst ? f.complete(v1) : g.completeExceptionally(ex));
2226 >        final CompletableFuture<Integer> h2 = m.applyToEither(f, g, rs[2]);
2227 >        final CompletableFuture<Integer> h3 = m.applyToEither(g, f, rs[3]);
2228  
2229 <        f = new CompletableFuture<Integer>();
2230 <        f2 = new CompletableFuture<Integer>();
2231 <        f2.completeExceptionally(new CFException());
2232 <        g = f.applyToEither(f2, inc);
2233 <        checkCompletedWithWrappedCFException(g);
2234 <    }
2229 >        // unspecified behavior - both source completions available
2230 >        try {
2231 >            assertEquals(inc(v1), h0.join());
2232 >            rs[0].assertValue(inc(v1));
2233 >        } catch (CompletionException ok) {
2234 >            checkCompletedWithWrappedException(h0, ex);
2235 >            rs[0].assertNotInvoked();
2236 >        }
2237 >        try {
2238 >            assertEquals(inc(v1), h1.join());
2239 >            rs[1].assertValue(inc(v1));
2240 >        } catch (CompletionException ok) {
2241 >            checkCompletedWithWrappedException(h1, ex);
2242 >            rs[1].assertNotInvoked();
2243 >        }
2244 >        try {
2245 >            assertEquals(inc(v1), h2.join());
2246 >            rs[2].assertValue(inc(v1));
2247 >        } catch (CompletionException ok) {
2248 >            checkCompletedWithWrappedException(h2, ex);
2249 >            rs[2].assertNotInvoked();
2250 >        }
2251 >        try {
2252 >            assertEquals(inc(v1), h3.join());
2253 >            rs[3].assertValue(inc(v1));
2254 >        } catch (CompletionException ok) {
2255 >            checkCompletedWithWrappedException(h3, ex);
2256 >            rs[3].assertNotInvoked();
2257 >        }
2258  
2259 <    /**
2260 <     * applyToEither result completes exceptionally if action does
2261 <     */
880 <    public void testApplyToEither3() {
881 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
882 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
883 <        FailingFunction r = new FailingFunction();
884 <        CompletableFuture<Integer> g = f.applyToEither(f2, r);
885 <        f2.complete(two);
886 <        checkCompletedWithWrappedCFException(g);
887 <    }
2259 >        checkCompletedNormally(f, v1);
2260 >        checkCompletedExceptionally(g, ex);
2261 >    }}
2262  
2263      /**
2264       * applyToEither result completes exceptionally if either source cancelled
2265       */
2266 <    public void testApplyToEither4() {
2267 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
2268 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
2269 <        CompletableFuture<Integer> g = f.applyToEither(f2, inc);
2270 <        assertTrue(f.cancel(true));
2271 <        checkCompletedWithWrappedCancellationException(g);
2272 <        f = new CompletableFuture<Integer>();
2273 <        f2 = new CompletableFuture<Integer>();
2274 <        assertTrue(f2.cancel(true));
2275 <        checkCompletedWithWrappedCancellationException(g);
2276 <    }
2277 <
2278 <    /**
2279 <     * acceptEither result completes normally after normal completion
2280 <     * of either source
2281 <     */
2282 <    public void testAcceptEither() {
2283 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
2284 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
2285 <        IncAction r = new IncAction();
2286 <        CompletableFuture<Void> g = f.acceptEither(f2, r);
2287 <        f.complete(one);
2288 <        checkCompletedNormally(g, null);
2289 <        f2.complete(one);
2290 <        checkCompletedNormally(g, null);
2291 <        assertEquals(r.value, 2);
2292 <
2293 <        r = new IncAction();
2294 <        f = new CompletableFuture<Integer>();
2295 <        f.complete(one);
2296 <        f2 = new CompletableFuture<Integer>();
2297 <        g = f.acceptEither(f2, r);
2298 <        checkCompletedNormally(g, null);
2299 <        assertEquals(r.value, 2);
2300 <    }
2266 >    public void testApplyToEither_sourceCancelled() {
2267 >        for (ExecutionMode m : ExecutionMode.values())
2268 >        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2269 >        for (Integer v1 : new Integer[] { 1, null })
2270 >    {
2271 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
2272 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
2273 >        final IncFunction[] rs = new IncFunction[6];
2274 >        for (int i = 0; i < rs.length; i++) rs[i] = new IncFunction(m);
2275 >
2276 >        final CompletableFuture<Integer> h0 = m.applyToEither(f, g, rs[0]);
2277 >        final CompletableFuture<Integer> h1 = m.applyToEither(g, f, rs[1]);
2278 >        checkIncomplete(h0);
2279 >        checkIncomplete(h1);
2280 >        rs[0].assertNotInvoked();
2281 >        rs[1].assertNotInvoked();
2282 >        f.cancel(mayInterruptIfRunning);
2283 >        checkCompletedWithWrappedCancellationException(h0);
2284 >        checkCompletedWithWrappedCancellationException(h1);
2285 >        final CompletableFuture<Integer> h2 = m.applyToEither(f, g, rs[2]);
2286 >        final CompletableFuture<Integer> h3 = m.applyToEither(g, f, rs[3]);
2287 >        checkCompletedWithWrappedCancellationException(h2);
2288 >        checkCompletedWithWrappedCancellationException(h3);
2289 >        g.complete(v1);
2290 >
2291 >        // unspecified behavior - both source completions available
2292 >        final CompletableFuture<Integer> h4 = m.applyToEither(f, g, rs[4]);
2293 >        final CompletableFuture<Integer> h5 = m.applyToEither(g, f, rs[5]);
2294 >        try {
2295 >            assertEquals(inc(v1), h4.join());
2296 >            rs[4].assertValue(inc(v1));
2297 >        } catch (CompletionException ok) {
2298 >            checkCompletedWithWrappedCancellationException(h4);
2299 >            rs[4].assertNotInvoked();
2300 >        }
2301 >        try {
2302 >            assertEquals(inc(v1), h5.join());
2303 >            rs[5].assertValue(inc(v1));
2304 >        } catch (CompletionException ok) {
2305 >            checkCompletedWithWrappedCancellationException(h5);
2306 >            rs[5].assertNotInvoked();
2307 >        }
2308  
2309 <    /**
2310 <     * acceptEither result completes exceptionally after exceptional
2311 <     * completion of either source
2312 <     */
2313 <    public void testAcceptEither2() {
2314 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
2315 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
2316 <        IncAction r = new IncAction();
2317 <        CompletableFuture<Void> g = f.acceptEither(f2, r);
2318 <        f.completeExceptionally(new CFException());
2319 <        f2.complete(one);
2320 <        checkCompletedWithWrappedCFException(g);
2309 >        checkCancelled(f);
2310 >        checkCompletedNormally(g, v1);
2311 >        checkCompletedWithWrappedCancellationException(h0);
2312 >        checkCompletedWithWrappedCancellationException(h1);
2313 >        checkCompletedWithWrappedCancellationException(h2);
2314 >        checkCompletedWithWrappedCancellationException(h3);
2315 >        for (int i = 0; i < 4; i++) rs[i].assertNotInvoked();
2316 >    }}
2317 >
2318 >    public void testApplyToEither_sourceCancelled2() {
2319 >        for (ExecutionMode m : ExecutionMode.values())
2320 >        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2321 >        for (boolean fFirst : new boolean[] { true, false })
2322 >        for (Integer v1 : new Integer[] { 1, null })
2323 >    {
2324 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
2325 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
2326 >        final IncFunction[] rs = new IncFunction[6];
2327 >        for (int i = 0; i < rs.length; i++) rs[i] = new IncFunction(m);
2328 >
2329 >        final CompletableFuture<Integer> h0 = m.applyToEither(f, g, rs[0]);
2330 >        final CompletableFuture<Integer> h1 = m.applyToEither(g, f, rs[1]);
2331 >        assertTrue(fFirst ? f.complete(v1) : g.cancel(mayInterruptIfRunning));
2332 >        assertTrue(!fFirst ? f.complete(v1) : g.cancel(mayInterruptIfRunning));
2333 >        final CompletableFuture<Integer> h2 = m.applyToEither(f, g, rs[2]);
2334 >        final CompletableFuture<Integer> h3 = m.applyToEither(g, f, rs[3]);
2335  
2336 <        r = new IncAction();
2337 <        f = new CompletableFuture<Integer>();
2338 <        f2 = new CompletableFuture<Integer>();
2339 <        f2.completeExceptionally(new CFException());
2340 <        g = f.acceptEither(f2, r);
2341 <        checkCompletedWithWrappedCFException(g);
2342 <    }
2336 >        // unspecified behavior - both source completions available
2337 >        try {
2338 >            assertEquals(inc(v1), h0.join());
2339 >            rs[0].assertValue(inc(v1));
2340 >        } catch (CompletionException ok) {
2341 >            checkCompletedWithWrappedCancellationException(h0);
2342 >            rs[0].assertNotInvoked();
2343 >        }
2344 >        try {
2345 >            assertEquals(inc(v1), h1.join());
2346 >            rs[1].assertValue(inc(v1));
2347 >        } catch (CompletionException ok) {
2348 >            checkCompletedWithWrappedCancellationException(h1);
2349 >            rs[1].assertNotInvoked();
2350 >        }
2351 >        try {
2352 >            assertEquals(inc(v1), h2.join());
2353 >            rs[2].assertValue(inc(v1));
2354 >        } catch (CompletionException ok) {
2355 >            checkCompletedWithWrappedCancellationException(h2);
2356 >            rs[2].assertNotInvoked();
2357 >        }
2358 >        try {
2359 >            assertEquals(inc(v1), h3.join());
2360 >            rs[3].assertValue(inc(v1));
2361 >        } catch (CompletionException ok) {
2362 >            checkCompletedWithWrappedCancellationException(h3);
2363 >            rs[3].assertNotInvoked();
2364 >        }
2365  
2366 <    /**
2367 <     * acceptEither result completes exceptionally if action does
2368 <     */
952 <    public void testAcceptEither3() {
953 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
954 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
955 <        FailingConsumer r = new FailingConsumer();
956 <        CompletableFuture<Void> g = f.acceptEither(f2, r);
957 <        f2.complete(two);
958 <        checkCompletedWithWrappedCFException(g);
959 <    }
2366 >        checkCompletedNormally(f, v1);
2367 >        checkCancelled(g);
2368 >    }}
2369  
2370      /**
2371 <     * acceptEither result completes exceptionally if either source cancelled
2371 >     * applyToEither result completes exceptionally if action does
2372       */
2373 <    public void testAcceptEither4() {
2374 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
2375 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
2376 <        IncAction r = new IncAction();
2377 <        CompletableFuture<Void> g = f.acceptEither(f2, r);
2378 <        assertTrue(f.cancel(true));
2379 <        checkCompletedWithWrappedCancellationException(g);
2380 <        f = new CompletableFuture<Integer>();
2381 <        f2 = new CompletableFuture<Integer>();
2382 <        assertTrue(f2.cancel(true));
2383 <        checkCompletedWithWrappedCancellationException(g);
2384 <    }
2385 <
2373 >    public void testApplyToEither_actionFailed() {
2374 >        for (ExecutionMode m : ExecutionMode.values())
2375 >        for (Integer v1 : new Integer[] { 1, null })
2376 >        for (Integer v2 : new Integer[] { 2, null })
2377 >    {
2378 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
2379 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
2380 >        final FailingFunction[] rs = new FailingFunction[6];
2381 >        for (int i = 0; i < rs.length; i++) rs[i] = new FailingFunction(m);
2382 >
2383 >        final CompletableFuture<Integer> h0 = m.applyToEither(f, g, rs[0]);
2384 >        final CompletableFuture<Integer> h1 = m.applyToEither(g, f, rs[1]);
2385 >        f.complete(v1);
2386 >        final CompletableFuture<Integer> h2 = m.applyToEither(f, g, rs[2]);
2387 >        final CompletableFuture<Integer> h3 = m.applyToEither(g, f, rs[3]);
2388 >        checkCompletedWithWrappedCFException(h0);
2389 >        checkCompletedWithWrappedCFException(h1);
2390 >        checkCompletedWithWrappedCFException(h2);
2391 >        checkCompletedWithWrappedCFException(h3);
2392 >        for (int i = 0; i < 4; i++) rs[i].assertValue(v1);
2393 >
2394 >        g.complete(v2);
2395 >
2396 >        // unspecified behavior - both source completions available
2397 >        final CompletableFuture<Integer> h4 = m.applyToEither(f, g, rs[4]);
2398 >        final CompletableFuture<Integer> h5 = m.applyToEither(g, f, rs[5]);
2399 >
2400 >        checkCompletedWithWrappedCFException(h4);
2401 >        assertTrue(Objects.equals(v1, rs[4].value) ||
2402 >                   Objects.equals(v2, rs[4].value));
2403 >        checkCompletedWithWrappedCFException(h5);
2404 >        assertTrue(Objects.equals(v1, rs[5].value) ||
2405 >                   Objects.equals(v2, rs[5].value));
2406 >
2407 >        checkCompletedNormally(f, v1);
2408 >        checkCompletedNormally(g, v2);
2409 >    }}
2410  
2411      /**
2412 <     * runAfterEither result completes normally after normal completion
2412 >     * acceptEither result completes normally after normal completion
2413       * of either source
2414       */
2415 <    public void testRunAfterEither() {
2416 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
2417 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
2418 <        Noop r = new Noop();
2419 <        CompletableFuture<Void> g = f.runAfterEither(f2, r);
2420 <        f.complete(one);
2421 <        checkCompletedNormally(g, null);
2422 <        f2.complete(one);
2423 <        checkCompletedNormally(g, null);
2424 <        assertTrue(r.ran);
2425 <
2426 <        r = new Noop();
2427 <        f = new CompletableFuture<Integer>();
2428 <        f.complete(one);
2429 <        f2 = new CompletableFuture<Integer>();
2430 <        g = f.runAfterEither(f2, r);
2431 <        checkCompletedNormally(g, null);
2432 <        assertTrue(r.ran);
2433 <    }
2415 >    public void testAcceptEither_normalCompletion() {
2416 >        for (ExecutionMode m : ExecutionMode.values())
2417 >        for (Integer v1 : new Integer[] { 1, null })
2418 >        for (Integer v2 : new Integer[] { 2, null })
2419 >    {
2420 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
2421 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
2422 >        final NoopConsumer[] rs = new NoopConsumer[6];
2423 >        for (int i = 0; i < rs.length; i++) rs[i] = new NoopConsumer(m);
2424 >
2425 >        final CompletableFuture<Void> h0 = m.acceptEither(f, g, rs[0]);
2426 >        final CompletableFuture<Void> h1 = m.acceptEither(g, f, rs[1]);
2427 >        checkIncomplete(h0);
2428 >        checkIncomplete(h1);
2429 >        rs[0].assertNotInvoked();
2430 >        rs[1].assertNotInvoked();
2431 >        f.complete(v1);
2432 >        checkCompletedNormally(h0, null);
2433 >        checkCompletedNormally(h1, null);
2434 >        rs[0].assertValue(v1);
2435 >        rs[1].assertValue(v1);
2436 >        final CompletableFuture<Void> h2 = m.acceptEither(f, g, rs[2]);
2437 >        final CompletableFuture<Void> h3 = m.acceptEither(g, f, rs[3]);
2438 >        checkCompletedNormally(h2, null);
2439 >        checkCompletedNormally(h3, null);
2440 >        rs[2].assertValue(v1);
2441 >        rs[3].assertValue(v1);
2442 >        g.complete(v2);
2443 >
2444 >        // unspecified behavior - both source completions available
2445 >        final CompletableFuture<Void> h4 = m.acceptEither(f, g, rs[4]);
2446 >        final CompletableFuture<Void> h5 = m.acceptEither(g, f, rs[5]);
2447 >        checkCompletedNormally(h4, null);
2448 >        checkCompletedNormally(h5, null);
2449 >        assertTrue(Objects.equals(v1, rs[4].value) ||
2450 >                   Objects.equals(v2, rs[4].value));
2451 >        assertTrue(Objects.equals(v1, rs[5].value) ||
2452 >                   Objects.equals(v2, rs[5].value));
2453 >
2454 >        checkCompletedNormally(f, v1);
2455 >        checkCompletedNormally(g, v2);
2456 >        checkCompletedNormally(h0, null);
2457 >        checkCompletedNormally(h1, null);
2458 >        checkCompletedNormally(h2, null);
2459 >        checkCompletedNormally(h3, null);
2460 >        for (int i = 0; i < 4; i++) rs[i].assertValue(v1);
2461 >    }}
2462  
2463      /**
2464 <     * runAfterEither result completes exceptionally after exceptional
2464 >     * acceptEither result completes exceptionally after exceptional
2465       * completion of either source
2466       */
2467 <    public void testRunAfterEither2() {
2468 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
2469 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
2470 <        Noop r = new Noop();
2471 <        CompletableFuture<Void> g = f.runAfterEither(f2, r);
2472 <        f.completeExceptionally(new CFException());
2473 <        f2.complete(one);
2474 <        checkCompletedWithWrappedCFException(g);
2475 <
2476 <        r = new Noop();
2477 <        f = new CompletableFuture<Integer>();
2478 <        f2 = new CompletableFuture<Integer>();
2479 <        f2.completeExceptionally(new CFException());
2480 <        g = f.runAfterEither(f2, r);
2481 <        checkCompletedWithWrappedCFException(g);
2482 <    }
2483 <
2484 <    /**
2485 <     * runAfterEither result completes exceptionally if action does
2486 <     */
2487 <    public void testRunAfterEither3() {
2488 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
2489 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
2490 <        FailingNoop r = new FailingNoop();
2491 <        CompletableFuture<Void> g = f.runAfterEither(f2, r);
2492 <        f2.complete(two);
2493 <        checkCompletedWithWrappedCFException(g);
2494 <    }
2495 <
1035 <    /**
1036 <     * runAfterEither result completes exceptionally if either source cancelled
1037 <     */
1038 <    public void testRunAfterEither4() {
1039 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1040 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1041 <        Noop r = new Noop();
1042 <        CompletableFuture<Void> g = f.runAfterEither(f2, r);
1043 <        assertTrue(f.cancel(true));
1044 <        checkCompletedWithWrappedCancellationException(g);
1045 <        f = new CompletableFuture<Integer>();
1046 <        f2 = new CompletableFuture<Integer>();
1047 <        assertTrue(f2.cancel(true));
1048 <        checkCompletedWithWrappedCancellationException(g);
1049 <    }
1050 <
1051 <    /**
1052 <     * thenCompose result completes normally after normal completion of source
1053 <     */
1054 <    public void testThenCompose() {
1055 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1056 <        CompletableFutureInc r = new CompletableFutureInc();
1057 <        CompletableFuture<Integer> g = f.thenCompose(r);
1058 <        f.complete(one);
1059 <        checkCompletedNormally(g, two);
1060 <    }
1061 <
1062 <    /**
1063 <     * thenCompose result completes exceptionally after exceptional
1064 <     * completion of source
1065 <     */
1066 <    public void testThenCompose2() {
1067 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1068 <        CompletableFutureInc r = new CompletableFutureInc();
1069 <        CompletableFuture<Integer> g = f.thenCompose(r);
1070 <        f.completeExceptionally(new CFException());
1071 <        checkCompletedWithWrappedCFException(g);
1072 <    }
1073 <
1074 <    /**
1075 <     * thenCompose result completes exceptionally if action does
1076 <     */
1077 <    public void testThenCompose3() {
1078 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1079 <        FailingCompletableFutureFunction r = new FailingCompletableFutureFunction();
1080 <        CompletableFuture<Integer> g = f.thenCompose(r);
1081 <        f.complete(one);
1082 <        checkCompletedWithWrappedCFException(g);
1083 <    }
1084 <
1085 <    /**
1086 <     * thenCompose result completes exceptionally if source cancelled
1087 <     */
1088 <    public void testThenCompose4() {
1089 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1090 <        CompletableFutureInc r = new CompletableFutureInc();
1091 <        CompletableFuture<Integer> g = f.thenCompose(r);
1092 <        assertTrue(f.cancel(true));
1093 <        checkCompletedWithWrappedCancellationException(g);
1094 <    }
1095 <
1096 <
1097 <    // asyncs
1098 <
1099 <    /**
1100 <     * thenRunAsync result completes normally after normal completion of source
1101 <     */
1102 <    public void testThenRunAsync() {
1103 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1104 <        Noop r = new Noop();
1105 <        CompletableFuture<Void> g = f.thenRunAsync(r);
1106 <        f.complete(null);
1107 <        checkCompletedNormally(g, null);
1108 <
1109 <        // reordered version
1110 <        f = new CompletableFuture<Integer>();
1111 <        f.complete(null);
1112 <        r = new Noop();
1113 <        g = f.thenRunAsync(r);
1114 <        checkCompletedNormally(g, null);
1115 <    }
1116 <
1117 <    /**
1118 <     * thenRunAsync result completes exceptionally after exceptional
1119 <     * completion of source
1120 <     */
1121 <    public void testThenRunAsync2() {
1122 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1123 <        Noop r = new Noop();
1124 <        CompletableFuture<Void> g = f.thenRunAsync(r);
1125 <        f.completeExceptionally(new CFException());
2467 >    public void testAcceptEither_exceptionalCompletion() {
2468 >        for (ExecutionMode m : ExecutionMode.values())
2469 >        for (Integer v1 : new Integer[] { 1, null })
2470 >    {
2471 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
2472 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
2473 >        final CFException ex = new CFException();
2474 >        final NoopConsumer[] rs = new NoopConsumer[6];
2475 >        for (int i = 0; i < rs.length; i++) rs[i] = new NoopConsumer(m);
2476 >
2477 >        final CompletableFuture<Void> h0 = m.acceptEither(f, g, rs[0]);
2478 >        final CompletableFuture<Void> h1 = m.acceptEither(g, f, rs[1]);
2479 >        checkIncomplete(h0);
2480 >        checkIncomplete(h1);
2481 >        rs[0].assertNotInvoked();
2482 >        rs[1].assertNotInvoked();
2483 >        f.completeExceptionally(ex);
2484 >        checkCompletedWithWrappedException(h0, ex);
2485 >        checkCompletedWithWrappedException(h1, ex);
2486 >        final CompletableFuture<Void> h2 = m.acceptEither(f, g, rs[2]);
2487 >        final CompletableFuture<Void> h3 = m.acceptEither(g, f, rs[3]);
2488 >        checkCompletedWithWrappedException(h2, ex);
2489 >        checkCompletedWithWrappedException(h3, ex);
2490 >
2491 >        g.complete(v1);
2492 >
2493 >        // unspecified behavior - both source completions available
2494 >        final CompletableFuture<Void> h4 = m.acceptEither(f, g, rs[4]);
2495 >        final CompletableFuture<Void> h5 = m.acceptEither(g, f, rs[5]);
2496          try {
2497 <            g.join();
2498 <            shouldThrow();
2499 <        } catch (Exception ok) {
2497 >            assertNull(h4.join());
2498 >            rs[4].assertValue(v1);
2499 >        } catch (CompletionException ok) {
2500 >            checkCompletedWithWrappedException(h4, ex);
2501 >            rs[4].assertNotInvoked();
2502          }
2503 <        checkCompletedWithWrappedCFException(g);
2504 <    }
2505 <
2506 <    /**
2507 <     * thenRunAsync result completes exceptionally if action does
2508 <     */
2509 <    public void testThenRunAsync3() {
2510 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
2511 <        FailingNoop r = new FailingNoop();
2512 <        CompletableFuture<Void> g = f.thenRunAsync(r);
2513 <        f.complete(null);
2514 <        checkCompletedWithWrappedCFException(g);
2515 <    }
2516 <
2517 <    /**
2518 <     * thenRunAsync result completes exceptionally if source cancelled
2519 <     */
2520 <    public void testThenRunAsync4() {
2521 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
2522 <        Noop r = new Noop();
2523 <        CompletableFuture<Void> g = f.thenRunAsync(r);
2524 <        assertTrue(f.cancel(true));
2525 <        checkCompletedWithWrappedCancellationException(g);
2526 <    }
2527 <
2528 <    /**
2529 <     * thenApplyAsync result completes normally after normal completion of source
2530 <     */
2531 <    public void testThenApplyAsync() {
2532 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
2533 <        CompletableFuture<Integer> g = f.thenApplyAsync(inc);
2534 <        f.complete(one);
2535 <        checkCompletedNormally(g, two);
2536 <    }
2537 <
1166 <    /**
1167 <     * thenApplyAsync result completes exceptionally after exceptional
1168 <     * completion of source
1169 <     */
1170 <    public void testThenApplyAsync2() {
1171 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1172 <        CompletableFuture<Integer> g = f.thenApplyAsync(inc);
1173 <        f.completeExceptionally(new CFException());
1174 <        checkCompletedWithWrappedCFException(g);
1175 <    }
1176 <
1177 <    /**
1178 <     * thenApplyAsync result completes exceptionally if action does
1179 <     */
1180 <    public void testThenApplyAsync3() {
1181 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1182 <        FailingFunction r = new FailingFunction();
1183 <        CompletableFuture<Integer> g = f.thenApplyAsync(r);
1184 <        f.complete(null);
1185 <        checkCompletedWithWrappedCFException(g);
1186 <    }
1187 <
1188 <    /**
1189 <     * thenApplyAsync result completes exceptionally if source cancelled
1190 <     */
1191 <    public void testThenApplyAsync4() {
1192 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1193 <        CompletableFuture<Integer> g = f.thenApplyAsync(inc);
1194 <        assertTrue(f.cancel(true));
1195 <        checkCompletedWithWrappedCancellationException(g);
1196 <    }
1197 <
1198 <    /**
1199 <     * thenAcceptAsync result completes normally after normal
1200 <     * completion of source
1201 <     */
1202 <    public void testThenAcceptAsync() {
1203 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1204 <        IncAction r = new IncAction();
1205 <        CompletableFuture<Void> g = f.thenAcceptAsync(r);
1206 <        f.complete(one);
1207 <        checkCompletedNormally(g, null);
1208 <        assertEquals(r.value, 2);
1209 <    }
1210 <
1211 <    /**
1212 <     * thenAcceptAsync result completes exceptionally after exceptional
1213 <     * completion of source
1214 <     */
1215 <    public void testThenAcceptAsync2() {
1216 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1217 <        IncAction r = new IncAction();
1218 <        CompletableFuture<Void> g = f.thenAcceptAsync(r);
1219 <        f.completeExceptionally(new CFException());
1220 <        checkCompletedWithWrappedCFException(g);
1221 <    }
1222 <
1223 <    /**
1224 <     * thenAcceptAsync result completes exceptionally if action does
1225 <     */
1226 <    public void testThenAcceptAsync3() {
1227 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1228 <        FailingConsumer r = new FailingConsumer();
1229 <        CompletableFuture<Void> g = f.thenAcceptAsync(r);
1230 <        f.complete(null);
1231 <        checkCompletedWithWrappedCFException(g);
1232 <    }
1233 <
1234 <    /**
1235 <     * thenAcceptAsync result completes exceptionally if source cancelled
1236 <     */
1237 <    public void testThenAcceptAsync4() {
1238 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1239 <        IncAction r = new IncAction();
1240 <        CompletableFuture<Void> g = f.thenAcceptAsync(r);
1241 <        assertTrue(f.cancel(true));
1242 <        checkCompletedWithWrappedCancellationException(g);
1243 <    }
1244 <    /**
1245 <     * thenCombineAsync result completes normally after normal
1246 <     * completion of sources
1247 <     */
1248 <    public void testThenCombineAsync() {
1249 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1250 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1251 <        CompletableFuture<Integer> g = f.thenCombineAsync(f2, add);
1252 <        f.complete(one);
1253 <        checkIncomplete(g);
1254 <        f2.complete(two);
1255 <        checkCompletedNormally(g, three);
1256 <    }
1257 <
1258 <    /**
1259 <     * thenCombineAsync result completes exceptionally after exceptional
1260 <     * completion of source
1261 <     */
1262 <    public void testThenCombineAsync2() {
1263 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1264 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1265 <        CompletableFuture<Integer> g = f.thenCombineAsync(f2, add);
1266 <        f.completeExceptionally(new CFException());
1267 <        f2.complete(two);
1268 <        checkCompletedWithWrappedCFException(g);
1269 <
1270 <        f = new CompletableFuture<Integer>();
1271 <        f2 = new CompletableFuture<Integer>();
1272 <        g = f.thenCombineAsync(f2, add);
1273 <        f.complete(one);
1274 <        f2.completeExceptionally(new CFException());
1275 <        checkCompletedWithWrappedCFException(g);
1276 <    }
1277 <
1278 <    /**
1279 <     * thenCombineAsync result completes exceptionally if action does
1280 <     */
1281 <    public void testThenCombineAsync3() {
1282 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1283 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1284 <        FailingBiFunction r = new FailingBiFunction();
1285 <        CompletableFuture<Integer> g = f.thenCombineAsync(f2, r);
1286 <        f.complete(one);
1287 <        checkIncomplete(g);
1288 <        f2.complete(two);
1289 <        checkCompletedWithWrappedCFException(g);
1290 <    }
1291 <
1292 <    /**
1293 <     * thenCombineAsync result completes exceptionally if either source cancelled
1294 <     */
1295 <    public void testThenCombineAsync4() {
1296 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1297 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1298 <        CompletableFuture<Integer> g = f.thenCombineAsync(f2, add);
1299 <        assertTrue(f.cancel(true));
1300 <        f2.complete(two);
1301 <        checkCompletedWithWrappedCancellationException(g);
1302 <
1303 <        f = new CompletableFuture<Integer>();
1304 <        f2 = new CompletableFuture<Integer>();
1305 <        g = f.thenCombineAsync(f2, add);
1306 <        f.complete(one);
1307 <        assertTrue(f2.cancel(true));
1308 <        checkCompletedWithWrappedCancellationException(g);
1309 <    }
1310 <
1311 <    /**
1312 <     * thenAcceptBothAsync result completes normally after normal
1313 <     * completion of sources
1314 <     */
1315 <    public void testThenAcceptBothAsync() {
1316 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1317 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1318 <        AddAction r = new AddAction();
1319 <        CompletableFuture<Void> g = f.thenAcceptBothAsync(f2, r);
1320 <        f.complete(one);
1321 <        checkIncomplete(g);
1322 <        f2.complete(two);
1323 <        checkCompletedNormally(g, null);
1324 <        assertEquals(r.value, 3);
1325 <    }
1326 <
1327 <    /**
1328 <     * thenAcceptBothAsync result completes exceptionally after exceptional
1329 <     * completion of source
1330 <     */
1331 <    public void testThenAcceptBothAsync2() {
1332 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1333 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1334 <        AddAction r = new AddAction();
1335 <        CompletableFuture<Void> g = f.thenAcceptBothAsync(f2, r);
1336 <        f.completeExceptionally(new CFException());
1337 <        f2.complete(two);
1338 <        checkCompletedWithWrappedCFException(g);
1339 <
1340 <        r = new AddAction();
1341 <        f = new CompletableFuture<Integer>();
1342 <        f2 = new CompletableFuture<Integer>();
1343 <        g = f.thenAcceptBothAsync(f2, r);
1344 <        f.complete(one);
1345 <        f2.completeExceptionally(new CFException());
1346 <        checkCompletedWithWrappedCFException(g);
1347 <    }
1348 <
1349 <    /**
1350 <     * thenAcceptBothAsync result completes exceptionally if action does
1351 <     */
1352 <    public void testThenAcceptBothAsync3() {
1353 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1354 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1355 <        FailingBiConsumer r = new FailingBiConsumer();
1356 <        CompletableFuture<Void> g = f.thenAcceptBothAsync(f2, r);
1357 <        f.complete(one);
1358 <        checkIncomplete(g);
1359 <        f2.complete(two);
1360 <        checkCompletedWithWrappedCFException(g);
1361 <    }
1362 <
1363 <    /**
1364 <     * thenAcceptBothAsync result completes exceptionally if either source cancelled
1365 <     */
1366 <    public void testThenAcceptBothAsync4() {
1367 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1368 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1369 <        AddAction r = new AddAction();
1370 <        CompletableFuture<Void> g = f.thenAcceptBothAsync(f2, r);
1371 <        assertTrue(f.cancel(true));
1372 <        f2.complete(two);
1373 <        checkCompletedWithWrappedCancellationException(g);
1374 <
1375 <        r = new AddAction();
1376 <        f = new CompletableFuture<Integer>();
1377 <        f2 = new CompletableFuture<Integer>();
1378 <        g = f.thenAcceptBothAsync(f2, r);
1379 <        f.complete(one);
1380 <        assertTrue(f2.cancel(true));
1381 <        checkCompletedWithWrappedCancellationException(g);
1382 <    }
1383 <
1384 <    /**
1385 <     * runAfterBothAsync result completes normally after normal
1386 <     * completion of sources
1387 <     */
1388 <    public void testRunAfterBothAsync() {
1389 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1390 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1391 <        Noop r = new Noop();
1392 <        CompletableFuture<Void> g = f.runAfterBothAsync(f2, r);
1393 <        f.complete(one);
1394 <        checkIncomplete(g);
1395 <        f2.complete(two);
1396 <        checkCompletedNormally(g, null);
1397 <        assertTrue(r.ran);
1398 <    }
1399 <
1400 <    /**
1401 <     * runAfterBothAsync result completes exceptionally after exceptional
1402 <     * completion of source
1403 <     */
1404 <    public void testRunAfterBothAsync2() {
1405 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1406 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1407 <        Noop r = new Noop();
1408 <        CompletableFuture<Void> g = f.runAfterBothAsync(f2, r);
1409 <        f.completeExceptionally(new CFException());
1410 <        f2.complete(two);
1411 <        checkCompletedWithWrappedCFException(g);
1412 <
1413 <        r = new Noop();
1414 <        f = new CompletableFuture<Integer>();
1415 <        f2 = new CompletableFuture<Integer>();
1416 <        g = f.runAfterBothAsync(f2, r);
1417 <        f.complete(one);
1418 <        f2.completeExceptionally(new CFException());
1419 <        checkCompletedWithWrappedCFException(g);
1420 <    }
1421 <
1422 <    /**
1423 <     * runAfterBothAsync result completes exceptionally if action does
1424 <     */
1425 <    public void testRunAfterBothAsync3() {
1426 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1427 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1428 <        FailingNoop r = new FailingNoop();
1429 <        CompletableFuture<Void> g = f.runAfterBothAsync(f2, r);
1430 <        f.complete(one);
1431 <        checkIncomplete(g);
1432 <        f2.complete(two);
1433 <        checkCompletedWithWrappedCFException(g);
1434 <    }
1435 <
1436 <    /**
1437 <     * runAfterBothAsync result completes exceptionally if either source cancelled
1438 <     */
1439 <    public void testRunAfterBothAsync4() {
1440 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1441 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1442 <        Noop r = new Noop();
1443 <        CompletableFuture<Void> g = f.runAfterBothAsync(f2, r);
1444 <        assertTrue(f.cancel(true));
1445 <        f2.complete(two);
1446 <        checkCompletedWithWrappedCancellationException(g);
1447 <
1448 <        r = new Noop();
1449 <        f = new CompletableFuture<Integer>();
1450 <        f2 = new CompletableFuture<Integer>();
1451 <        g = f.runAfterBothAsync(f2, r);
1452 <        f.complete(one);
1453 <        assertTrue(f2.cancel(true));
1454 <        checkCompletedWithWrappedCancellationException(g);
1455 <    }
1456 <
1457 <    /**
1458 <     * applyToEitherAsync result completes normally after normal
1459 <     * completion of sources
1460 <     */
1461 <    public void testApplyToEitherAsync() {
1462 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1463 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1464 <        CompletableFuture<Integer> g = f.applyToEitherAsync(f2, inc);
1465 <        f.complete(one);
1466 <        checkCompletedNormally(g, two);
1467 <
1468 <        f = new CompletableFuture<Integer>();
1469 <        f.complete(one);
1470 <        f2 = new CompletableFuture<Integer>();
1471 <        g = f.applyToEitherAsync(f2, inc);
1472 <        checkCompletedNormally(g, two);
1473 <    }
1474 <
1475 <    /**
1476 <     * applyToEitherAsync result completes exceptionally after exceptional
1477 <     * completion of source
1478 <     */
1479 <    public void testApplyToEitherAsync2() {
1480 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1481 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1482 <        CompletableFuture<Integer> g = f.applyToEitherAsync(f2, inc);
1483 <        f.completeExceptionally(new CFException());
1484 <        checkCompletedWithWrappedCFException(g);
1485 <
1486 <        f = new CompletableFuture<Integer>();
1487 <        f2 = new CompletableFuture<Integer>();
1488 <        f2.completeExceptionally(new CFException());
1489 <        g = f.applyToEitherAsync(f2, inc);
1490 <        f.complete(one);
1491 <        checkCompletedWithWrappedCFException(g);
1492 <    }
1493 <
1494 <    /**
1495 <     * applyToEitherAsync result completes exceptionally if action does
1496 <     */
1497 <    public void testApplyToEitherAsync3() {
1498 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1499 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1500 <        FailingFunction r = new FailingFunction();
1501 <        CompletableFuture<Integer> g = f.applyToEitherAsync(f2, r);
1502 <        f.complete(one);
1503 <        checkCompletedWithWrappedCFException(g);
1504 <    }
1505 <
1506 <    /**
1507 <     * applyToEitherAsync result completes exceptionally if either source cancelled
1508 <     */
1509 <    public void testApplyToEitherAsync4() {
1510 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1511 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1512 <        CompletableFuture<Integer> g = f.applyToEitherAsync(f2, inc);
1513 <        assertTrue(f.cancel(true));
1514 <        checkCompletedWithWrappedCancellationException(g);
1515 <
1516 <        f = new CompletableFuture<Integer>();
1517 <        f2 = new CompletableFuture<Integer>();
1518 <        assertTrue(f2.cancel(true));
1519 <        g = f.applyToEitherAsync(f2, inc);
1520 <        checkCompletedWithWrappedCancellationException(g);
1521 <    }
1522 <
1523 <    /**
1524 <     * acceptEitherAsync result completes normally after normal
1525 <     * completion of sources
1526 <     */
1527 <    public void testAcceptEitherAsync() {
1528 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1529 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1530 <        IncAction r = new IncAction();
1531 <        CompletableFuture<Void> g = f.acceptEitherAsync(f2, r);
1532 <        f.complete(one);
1533 <        checkCompletedNormally(g, null);
1534 <        assertEquals(r.value, 2);
1535 <
1536 <        r = new IncAction();
1537 <        f = new CompletableFuture<Integer>();
1538 <        f.complete(one);
1539 <        f2 = new CompletableFuture<Integer>();
1540 <        g = f.acceptEitherAsync(f2, r);
1541 <        checkCompletedNormally(g, null);
1542 <        assertEquals(r.value, 2);
1543 <    }
1544 <
1545 <    /**
1546 <     * acceptEitherAsync result completes exceptionally after exceptional
1547 <     * completion of source
1548 <     */
1549 <    public void testAcceptEitherAsync2() {
1550 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1551 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1552 <        IncAction r = new IncAction();
1553 <        CompletableFuture<Void> g = f.acceptEitherAsync(f2, r);
1554 <        f.completeExceptionally(new CFException());
1555 <        checkCompletedWithWrappedCFException(g);
1556 <
1557 <        r = new IncAction();
1558 <        f = new CompletableFuture<Integer>();
1559 <        f2 = new CompletableFuture<Integer>();
1560 <        f2.completeExceptionally(new CFException());
1561 <        g = f.acceptEitherAsync(f2, r);
1562 <        f.complete(one);
1563 <        checkCompletedWithWrappedCFException(g);
1564 <    }
1565 <
1566 <    /**
1567 <     * acceptEitherAsync result completes exceptionally if action does
1568 <     */
1569 <    public void testAcceptEitherAsync3() {
1570 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1571 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1572 <        FailingConsumer r = new FailingConsumer();
1573 <        CompletableFuture<Void> g = f.acceptEitherAsync(f2, r);
1574 <        f.complete(one);
1575 <        checkCompletedWithWrappedCFException(g);
1576 <    }
1577 <
1578 <    /**
1579 <     * acceptEitherAsync result completes exceptionally if either
1580 <     * source cancelled
1581 <     */
1582 <    public void testAcceptEitherAsync4() {
1583 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1584 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1585 <        IncAction r = new IncAction();
1586 <        CompletableFuture<Void> g = f.acceptEitherAsync(f2, r);
1587 <        assertTrue(f.cancel(true));
1588 <        checkCompletedWithWrappedCancellationException(g);
1589 <
1590 <        r = new IncAction();
1591 <        f = new CompletableFuture<Integer>();
1592 <        f2 = new CompletableFuture<Integer>();
1593 <        assertTrue(f2.cancel(true));
1594 <        g = f.acceptEitherAsync(f2, r);
1595 <        checkCompletedWithWrappedCancellationException(g);
1596 <    }
1597 <
1598 <    /**
1599 <     * runAfterEitherAsync result completes normally after normal
1600 <     * completion of sources
1601 <     */
1602 <    public void testRunAfterEitherAsync() {
1603 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1604 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1605 <        Noop r = new Noop();
1606 <        CompletableFuture<Void> g = f.runAfterEitherAsync(f2, r);
1607 <        f.complete(one);
1608 <        checkCompletedNormally(g, null);
1609 <        assertTrue(r.ran);
1610 <
1611 <        r = new Noop();
1612 <        f = new CompletableFuture<Integer>();
1613 <        f.complete(one);
1614 <        f2 = new CompletableFuture<Integer>();
1615 <        g = f.runAfterEitherAsync(f2, r);
1616 <        checkCompletedNormally(g, null);
1617 <        assertTrue(r.ran);
1618 <    }
1619 <
1620 <    /**
1621 <     * runAfterEitherAsync result completes exceptionally after exceptional
1622 <     * completion of source
1623 <     */
1624 <    public void testRunAfterEitherAsync2() {
1625 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1626 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1627 <        Noop r = new Noop();
1628 <        CompletableFuture<Void> g = f.runAfterEitherAsync(f2, r);
1629 <        f.completeExceptionally(new CFException());
1630 <        checkCompletedWithWrappedCFException(g);
1631 <
1632 <        r = new Noop();
1633 <        f = new CompletableFuture<Integer>();
1634 <        f2 = new CompletableFuture<Integer>();
1635 <        f2.completeExceptionally(new CFException());
1636 <        g = f.runAfterEitherAsync(f2, r);
1637 <        f.complete(one);
1638 <        checkCompletedWithWrappedCFException(g);
1639 <    }
1640 <
1641 <    /**
1642 <     * runAfterEitherAsync result completes exceptionally if action does
1643 <     */
1644 <    public void testRunAfterEitherAsync3() {
1645 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1646 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1647 <        FailingNoop r = new FailingNoop();
1648 <        CompletableFuture<Void> g = f.runAfterEitherAsync(f2, r);
1649 <        f.complete(one);
1650 <        checkCompletedWithWrappedCFException(g);
1651 <    }
1652 <
1653 <    /**
1654 <     * runAfterEitherAsync result completes exceptionally if either
1655 <     * source cancelled
1656 <     */
1657 <    public void testRunAfterEitherAsync4() {
1658 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1659 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1660 <        Noop r = new Noop();
1661 <        CompletableFuture<Void> g = f.runAfterEitherAsync(f2, r);
1662 <        assertTrue(f.cancel(true));
1663 <        checkCompletedWithWrappedCancellationException(g);
1664 <
1665 <        r = new Noop();
1666 <        f = new CompletableFuture<Integer>();
1667 <        f2 = new CompletableFuture<Integer>();
1668 <        assertTrue(f2.cancel(true));
1669 <        g = f.runAfterEitherAsync(f2, r);
1670 <        checkCompletedWithWrappedCancellationException(g);
1671 <    }
1672 <
1673 <    /**
1674 <     * thenComposeAsync result completes normally after normal
1675 <     * completion of source
1676 <     */
1677 <    public void testThenComposeAsync() {
1678 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1679 <        CompletableFutureInc r = new CompletableFutureInc();
1680 <        CompletableFuture<Integer> g = f.thenComposeAsync(r);
1681 <        f.complete(one);
1682 <        checkCompletedNormally(g, two);
1683 <    }
1684 <
1685 <    /**
1686 <     * thenComposeAsync result completes exceptionally after
1687 <     * exceptional completion of source
1688 <     */
1689 <    public void testThenComposeAsync2() {
1690 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1691 <        CompletableFutureInc r = new CompletableFutureInc();
1692 <        CompletableFuture<Integer> g = f.thenComposeAsync(r);
1693 <        f.completeExceptionally(new CFException());
1694 <        checkCompletedWithWrappedCFException(g);
1695 <    }
1696 <
1697 <    /**
1698 <     * thenComposeAsync result completes exceptionally if action does
1699 <     */
1700 <    public void testThenComposeAsync3() {
1701 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1702 <        FailingCompletableFutureFunction r = new FailingCompletableFutureFunction();
1703 <        CompletableFuture<Integer> g = f.thenComposeAsync(r);
1704 <        f.complete(one);
1705 <        checkCompletedWithWrappedCFException(g);
1706 <    }
1707 <
1708 <    /**
1709 <     * thenComposeAsync result completes exceptionally if source cancelled
1710 <     */
1711 <    public void testThenComposeAsync4() {
1712 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1713 <        CompletableFutureInc r = new CompletableFutureInc();
1714 <        CompletableFuture<Integer> g = f.thenComposeAsync(r);
1715 <        assertTrue(f.cancel(true));
1716 <        checkCompletedWithWrappedCancellationException(g);
1717 <    }
1718 <
1719 <
1720 <    // async with explicit executors
1721 <
1722 <    /**
1723 <     * thenRunAsync result completes normally after normal completion of source
1724 <     */
1725 <    public void testThenRunAsyncE() {
1726 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1727 <        Noop r = new Noop();
1728 <        CompletableFuture<Void> g = f.thenRunAsync(r, new ThreadExecutor());
1729 <        f.complete(null);
1730 <        checkCompletedNormally(g, null);
1731 <
1732 <        // reordered version
1733 <        f = new CompletableFuture<Integer>();
1734 <        f.complete(null);
1735 <        r = new Noop();
1736 <        g = f.thenRunAsync(r, new ThreadExecutor());
1737 <        checkCompletedNormally(g, null);
1738 <    }
2503 >        try {
2504 >            assertNull(h5.join());
2505 >            rs[5].assertValue(v1);
2506 >        } catch (CompletionException ok) {
2507 >            checkCompletedWithWrappedException(h5, ex);
2508 >            rs[5].assertNotInvoked();
2509 >        }
2510 >
2511 >        checkCompletedExceptionally(f, ex);
2512 >        checkCompletedNormally(g, v1);
2513 >        checkCompletedWithWrappedException(h0, ex);
2514 >        checkCompletedWithWrappedException(h1, ex);
2515 >        checkCompletedWithWrappedException(h2, ex);
2516 >        checkCompletedWithWrappedException(h3, ex);
2517 >        checkCompletedWithWrappedException(h4, ex);
2518 >        for (int i = 0; i < 4; i++) rs[i].assertNotInvoked();
2519 >    }}
2520 >
2521 >    public void testAcceptEither_exceptionalCompletion2() {
2522 >        for (ExecutionMode m : ExecutionMode.values())
2523 >        for (boolean fFirst : new boolean[] { true, false })
2524 >        for (Integer v1 : new Integer[] { 1, null })
2525 >    {
2526 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
2527 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
2528 >        final CFException ex = new CFException();
2529 >        final NoopConsumer[] rs = new NoopConsumer[6];
2530 >        for (int i = 0; i < rs.length; i++) rs[i] = new NoopConsumer(m);
2531 >
2532 >        final CompletableFuture<Void> h0 = m.acceptEither(f, g, rs[0]);
2533 >        final CompletableFuture<Void> h1 = m.acceptEither(g, f, rs[1]);
2534 >        assertTrue(fFirst ? f.complete(v1) : g.completeExceptionally(ex));
2535 >        assertTrue(!fFirst ? f.complete(v1) : g.completeExceptionally(ex));
2536 >        final CompletableFuture<Void> h2 = m.acceptEither(f, g, rs[2]);
2537 >        final CompletableFuture<Void> h3 = m.acceptEither(g, f, rs[3]);
2538  
2539 <    /**
1741 <     * thenRunAsync result completes exceptionally after exceptional
1742 <     * completion of source
1743 <     */
1744 <    public void testThenRunAsync2E() {
1745 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1746 <        Noop r = new Noop();
1747 <        CompletableFuture<Void> g = f.thenRunAsync(r, new ThreadExecutor());
1748 <        f.completeExceptionally(new CFException());
2539 >        // unspecified behavior - both source completions available
2540          try {
2541 <            g.join();
2542 <            shouldThrow();
2543 <        } catch (Exception ok) {
2541 >            assertEquals(null, h0.join());
2542 >            rs[0].assertValue(v1);
2543 >        } catch (CompletionException ok) {
2544 >            checkCompletedWithWrappedException(h0, ex);
2545 >            rs[0].assertNotInvoked();
2546 >        }
2547 >        try {
2548 >            assertEquals(null, h1.join());
2549 >            rs[1].assertValue(v1);
2550 >        } catch (CompletionException ok) {
2551 >            checkCompletedWithWrappedException(h1, ex);
2552 >            rs[1].assertNotInvoked();
2553 >        }
2554 >        try {
2555 >            assertEquals(null, h2.join());
2556 >            rs[2].assertValue(v1);
2557 >        } catch (CompletionException ok) {
2558 >            checkCompletedWithWrappedException(h2, ex);
2559 >            rs[2].assertNotInvoked();
2560 >        }
2561 >        try {
2562 >            assertEquals(null, h3.join());
2563 >            rs[3].assertValue(v1);
2564 >        } catch (CompletionException ok) {
2565 >            checkCompletedWithWrappedException(h3, ex);
2566 >            rs[3].assertNotInvoked();
2567          }
1754        checkCompletedWithWrappedCFException(g);
1755    }
1756
1757    /**
1758     * thenRunAsync result completes exceptionally if action does
1759     */
1760    public void testThenRunAsync3E() {
1761        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1762        FailingNoop r = new FailingNoop();
1763        CompletableFuture<Void> g = f.thenRunAsync(r, new ThreadExecutor());
1764        f.complete(null);
1765        checkCompletedWithWrappedCFException(g);
1766    }
1767
1768    /**
1769     * thenRunAsync result completes exceptionally if source cancelled
1770     */
1771    public void testThenRunAsync4E() {
1772        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1773        Noop r = new Noop();
1774        CompletableFuture<Void> g = f.thenRunAsync(r, new ThreadExecutor());
1775        assertTrue(f.cancel(true));
1776        checkCompletedWithWrappedCancellationException(g);
1777    }
1778
1779    /**
1780     * thenApplyAsync result completes normally after normal completion of source
1781     */
1782    public void testThenApplyAsyncE() {
1783        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1784        CompletableFuture<Integer> g = f.thenApplyAsync(inc, new ThreadExecutor());
1785        f.complete(one);
1786        checkCompletedNormally(g, two);
1787    }
1788
1789    /**
1790     * thenApplyAsync result completes exceptionally after exceptional
1791     * completion of source
1792     */
1793    public void testThenApplyAsync2E() {
1794        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1795        CompletableFuture<Integer> g = f.thenApplyAsync(inc, new ThreadExecutor());
1796        f.completeExceptionally(new CFException());
1797        checkCompletedWithWrappedCFException(g);
1798    }
1799
1800    /**
1801     * thenApplyAsync result completes exceptionally if action does
1802     */
1803    public void testThenApplyAsync3E() {
1804        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1805        FailingFunction r = new FailingFunction();
1806        CompletableFuture<Integer> g = f.thenApplyAsync(r, new ThreadExecutor());
1807        f.complete(null);
1808        checkCompletedWithWrappedCFException(g);
1809    }
1810
1811    /**
1812     * thenApplyAsync result completes exceptionally if source cancelled
1813     */
1814    public void testThenApplyAsync4E() {
1815        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1816        CompletableFuture<Integer> g = f.thenApplyAsync(inc, new ThreadExecutor());
1817        assertTrue(f.cancel(true));
1818        checkCompletedWithWrappedCancellationException(g);
1819    }
1820
1821    /**
1822     * thenAcceptAsync result completes normally after normal
1823     * completion of source
1824     */
1825    public void testThenAcceptAsyncE() {
1826        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1827        IncAction r = new IncAction();
1828        CompletableFuture<Void> g = f.thenAcceptAsync(r, new ThreadExecutor());
1829        f.complete(one);
1830        checkCompletedNormally(g, null);
1831        assertEquals(r.value, 2);
1832    }
2568  
2569 <    /**
2570 <     * thenAcceptAsync result completes exceptionally after exceptional
2571 <     * completion of source
1837 <     */
1838 <    public void testThenAcceptAsync2E() {
1839 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1840 <        IncAction r = new IncAction();
1841 <        CompletableFuture<Void> g = f.thenAcceptAsync(r, new ThreadExecutor());
1842 <        f.completeExceptionally(new CFException());
1843 <        checkCompletedWithWrappedCFException(g);
1844 <    }
2569 >        checkCompletedNormally(f, v1);
2570 >        checkCompletedExceptionally(g, ex);
2571 >    }}
2572  
2573      /**
2574 <     * thenAcceptAsync result completes exceptionally if action does
2574 >     * acceptEither result completes exceptionally if either source cancelled
2575       */
2576 <    public void testThenAcceptAsync3E() {
2577 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
2578 <        FailingConsumer r = new FailingConsumer();
2579 <        CompletableFuture<Void> g = f.thenAcceptAsync(r, new ThreadExecutor());
2580 <        f.complete(null);
2581 <        checkCompletedWithWrappedCFException(g);
2582 <    }
2576 >    public void testAcceptEither_sourceCancelled() {
2577 >        for (ExecutionMode m : ExecutionMode.values())
2578 >        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2579 >        for (Integer v1 : new Integer[] { 1, null })
2580 >    {
2581 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
2582 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
2583 >        final NoopConsumer[] rs = new NoopConsumer[6];
2584 >        for (int i = 0; i < rs.length; i++) rs[i] = new NoopConsumer(m);
2585 >
2586 >        final CompletableFuture<Void> h0 = m.acceptEither(f, g, rs[0]);
2587 >        final CompletableFuture<Void> h1 = m.acceptEither(g, f, rs[1]);
2588 >        checkIncomplete(h0);
2589 >        checkIncomplete(h1);
2590 >        rs[0].assertNotInvoked();
2591 >        rs[1].assertNotInvoked();
2592 >        f.cancel(mayInterruptIfRunning);
2593 >        checkCompletedWithWrappedCancellationException(h0);
2594 >        checkCompletedWithWrappedCancellationException(h1);
2595 >        final CompletableFuture<Void> h2 = m.acceptEither(f, g, rs[2]);
2596 >        final CompletableFuture<Void> h3 = m.acceptEither(g, f, rs[3]);
2597 >        checkCompletedWithWrappedCancellationException(h2);
2598 >        checkCompletedWithWrappedCancellationException(h3);
2599 >
2600 >        g.complete(v1);
2601 >
2602 >        // unspecified behavior - both source completions available
2603 >        final CompletableFuture<Void> h4 = m.acceptEither(f, g, rs[4]);
2604 >        final CompletableFuture<Void> h5 = m.acceptEither(g, f, rs[5]);
2605 >        try {
2606 >            assertNull(h4.join());
2607 >            rs[4].assertValue(v1);
2608 >        } catch (CompletionException ok) {
2609 >            checkCompletedWithWrappedCancellationException(h4);
2610 >            rs[4].assertNotInvoked();
2611 >        }
2612 >        try {
2613 >            assertNull(h5.join());
2614 >            rs[5].assertValue(v1);
2615 >        } catch (CompletionException ok) {
2616 >            checkCompletedWithWrappedCancellationException(h5);
2617 >            rs[5].assertNotInvoked();
2618 >        }
2619  
2620 <    /**
2621 <     * thenAcceptAsync result completes exceptionally if source cancelled
2622 <     */
2623 <    public void testThenAcceptAsync4E() {
2624 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
2625 <        IncAction r = new IncAction();
2626 <        CompletableFuture<Void> g = f.thenAcceptAsync(r, new ThreadExecutor());
2627 <        assertTrue(f.cancel(true));
1865 <        checkCompletedWithWrappedCancellationException(g);
1866 <    }
1867 <    /**
1868 <     * thenCombineAsync result completes normally after normal
1869 <     * completion of sources
1870 <     */
1871 <    public void testThenCombineAsyncE() {
1872 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1873 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1874 <        CompletableFuture<Integer> g = f.thenCombineAsync(f2, add, new ThreadExecutor());
1875 <        f.complete(one);
1876 <        checkIncomplete(g);
1877 <        f2.complete(two);
1878 <        checkCompletedNormally(g, three);
1879 <    }
2620 >        checkCancelled(f);
2621 >        checkCompletedNormally(g, v1);
2622 >        checkCompletedWithWrappedCancellationException(h0);
2623 >        checkCompletedWithWrappedCancellationException(h1);
2624 >        checkCompletedWithWrappedCancellationException(h2);
2625 >        checkCompletedWithWrappedCancellationException(h3);
2626 >        for (int i = 0; i < 4; i++) rs[i].assertNotInvoked();
2627 >    }}
2628  
2629      /**
2630 <     * thenCombineAsync result completes exceptionally after exceptional
1883 <     * completion of source
2630 >     * acceptEither result completes exceptionally if action does
2631       */
2632 <    public void testThenCombineAsync2E() {
2633 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
2634 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
2635 <        CompletableFuture<Integer> g = f.thenCombineAsync(f2, add, new ThreadExecutor());
2636 <        f.completeExceptionally(new CFException());
2637 <        f2.complete(two);
2638 <        checkCompletedWithWrappedCFException(g);
2639 <
2640 <        f = new CompletableFuture<Integer>();
2641 <        f2 = new CompletableFuture<Integer>();
2642 <        g = f.thenCombineAsync(f2, add, new ThreadExecutor());
2643 <        f.complete(one);
2644 <        f2.completeExceptionally(new CFException());
2645 <        checkCompletedWithWrappedCFException(g);
2646 <    }
2632 >    public void testAcceptEither_actionFailed() {
2633 >        for (ExecutionMode m : ExecutionMode.values())
2634 >        for (Integer v1 : new Integer[] { 1, null })
2635 >        for (Integer v2 : new Integer[] { 2, null })
2636 >    {
2637 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
2638 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
2639 >        final FailingConsumer[] rs = new FailingConsumer[6];
2640 >        for (int i = 0; i < rs.length; i++) rs[i] = new FailingConsumer(m);
2641 >
2642 >        final CompletableFuture<Void> h0 = m.acceptEither(f, g, rs[0]);
2643 >        final CompletableFuture<Void> h1 = m.acceptEither(g, f, rs[1]);
2644 >        f.complete(v1);
2645 >        final CompletableFuture<Void> h2 = m.acceptEither(f, g, rs[2]);
2646 >        final CompletableFuture<Void> h3 = m.acceptEither(g, f, rs[3]);
2647 >        checkCompletedWithWrappedCFException(h0);
2648 >        checkCompletedWithWrappedCFException(h1);
2649 >        checkCompletedWithWrappedCFException(h2);
2650 >        checkCompletedWithWrappedCFException(h3);
2651 >        for (int i = 0; i < 4; i++) rs[i].assertValue(v1);
2652 >
2653 >        g.complete(v2);
2654 >
2655 >        // unspecified behavior - both source completions available
2656 >        final CompletableFuture<Void> h4 = m.acceptEither(f, g, rs[4]);
2657 >        final CompletableFuture<Void> h5 = m.acceptEither(g, f, rs[5]);
2658 >
2659 >        checkCompletedWithWrappedCFException(h4);
2660 >        assertTrue(Objects.equals(v1, rs[4].value) ||
2661 >                   Objects.equals(v2, rs[4].value));
2662 >        checkCompletedWithWrappedCFException(h5);
2663 >        assertTrue(Objects.equals(v1, rs[5].value) ||
2664 >                   Objects.equals(v2, rs[5].value));
2665 >
2666 >        checkCompletedNormally(f, v1);
2667 >        checkCompletedNormally(g, v2);
2668 >    }}
2669  
2670      /**
2671 <     * thenCombineAsync result completes exceptionally if action does
2671 >     * runAfterEither result completes normally after normal completion
2672 >     * of either source
2673       */
2674 <    public void testThenCombineAsync3E() {
2675 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
2676 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
2677 <        FailingBiFunction r = new FailingBiFunction();
2678 <        CompletableFuture<Integer> g = f.thenCombineAsync(f2, r, new ThreadExecutor());
2679 <        f.complete(one);
2680 <        checkIncomplete(g);
2681 <        f2.complete(two);
2682 <        checkCompletedWithWrappedCFException(g);
2683 <    }
2674 >    public void testRunAfterEither_normalCompletion() {
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 Noop[] rs = new Noop[6];
2682 >        for (int i = 0; i < rs.length; i++) rs[i] = new Noop(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 >        checkIncomplete(h0);
2687 >        checkIncomplete(h1);
2688 >        rs[0].assertNotInvoked();
2689 >        rs[1].assertNotInvoked();
2690 >        f.complete(v1);
2691 >        checkCompletedNormally(h0, null);
2692 >        checkCompletedNormally(h1, null);
2693 >        rs[0].assertInvoked();
2694 >        rs[1].assertInvoked();
2695 >        final CompletableFuture<Void> h2 = m.runAfterEither(f, g, rs[2]);
2696 >        final CompletableFuture<Void> h3 = m.runAfterEither(g, f, rs[3]);
2697 >        checkCompletedNormally(h2, null);
2698 >        checkCompletedNormally(h3, null);
2699 >        rs[2].assertInvoked();
2700 >        rs[3].assertInvoked();
2701 >
2702 >        g.complete(v2);
2703 >
2704 >        final CompletableFuture<Void> h4 = m.runAfterEither(f, g, rs[4]);
2705 >        final CompletableFuture<Void> h5 = m.runAfterEither(g, f, rs[5]);
2706 >
2707 >        checkCompletedNormally(f, v1);
2708 >        checkCompletedNormally(g, v2);
2709 >        checkCompletedNormally(h0, null);
2710 >        checkCompletedNormally(h1, null);
2711 >        checkCompletedNormally(h2, null);
2712 >        checkCompletedNormally(h3, null);
2713 >        checkCompletedNormally(h4, null);
2714 >        checkCompletedNormally(h5, null);
2715 >        for (int i = 0; i < 6; i++) rs[i].assertInvoked();
2716 >    }}
2717  
2718      /**
2719 <     * thenCombineAsync result completes exceptionally if either source cancelled
2719 >     * runAfterEither result completes exceptionally after exceptional
2720 >     * completion of either source
2721       */
2722 <    public void testThenCombineAsync4E() {
2723 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
2724 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
2725 <        CompletableFuture<Integer> g = f.thenCombineAsync(f2, add, new ThreadExecutor());
2726 <        assertTrue(f.cancel(true));
2727 <        f2.complete(two);
2728 <        checkCompletedWithWrappedCancellationException(g);
2722 >    public void testRunAfterEither_exceptionalCompletion() {
2723 >        for (ExecutionMode m : ExecutionMode.values())
2724 >        for (Integer v1 : new Integer[] { 1, null })
2725 >    {
2726 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
2727 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
2728 >        final CFException ex = new CFException();
2729 >        final Noop[] rs = new Noop[6];
2730 >        for (int i = 0; i < rs.length; i++) rs[i] = new Noop(m);
2731 >
2732 >        final CompletableFuture<Void> h0 = m.runAfterEither(f, g, rs[0]);
2733 >        final CompletableFuture<Void> h1 = m.runAfterEither(g, f, rs[1]);
2734 >        checkIncomplete(h0);
2735 >        checkIncomplete(h1);
2736 >        rs[0].assertNotInvoked();
2737 >        rs[1].assertNotInvoked();
2738 >        assertTrue(f.completeExceptionally(ex));
2739 >        checkCompletedWithWrappedException(h0, ex);
2740 >        checkCompletedWithWrappedException(h1, ex);
2741 >        final CompletableFuture<Void> h2 = m.runAfterEither(f, g, rs[2]);
2742 >        final CompletableFuture<Void> h3 = m.runAfterEither(g, f, rs[3]);
2743 >        checkCompletedWithWrappedException(h2, ex);
2744 >        checkCompletedWithWrappedException(h3, ex);
2745 >
2746 >        assertTrue(g.complete(v1));
2747 >
2748 >        // unspecified behavior - both source completions available
2749 >        final CompletableFuture<Void> h4 = m.runAfterEither(f, g, rs[4]);
2750 >        final CompletableFuture<Void> h5 = m.runAfterEither(g, f, rs[5]);
2751 >        try {
2752 >            assertNull(h4.join());
2753 >            rs[4].assertInvoked();
2754 >        } catch (CompletionException ok) {
2755 >            checkCompletedWithWrappedException(h4, ex);
2756 >            rs[4].assertNotInvoked();
2757 >        }
2758 >        try {
2759 >            assertNull(h5.join());
2760 >            rs[5].assertInvoked();
2761 >        } catch (CompletionException ok) {
2762 >            checkCompletedWithWrappedException(h5, ex);
2763 >            rs[5].assertNotInvoked();
2764 >        }
2765 >
2766 >        checkCompletedExceptionally(f, ex);
2767 >        checkCompletedNormally(g, v1);
2768 >        checkCompletedWithWrappedException(h0, ex);
2769 >        checkCompletedWithWrappedException(h1, ex);
2770 >        checkCompletedWithWrappedException(h2, ex);
2771 >        checkCompletedWithWrappedException(h3, ex);
2772 >        checkCompletedWithWrappedException(h4, ex);
2773 >        for (int i = 0; i < 4; i++) rs[i].assertNotInvoked();
2774 >    }}
2775 >
2776 >    public void testRunAfterEither_exceptionalCompletion2() {
2777 >        for (ExecutionMode m : ExecutionMode.values())
2778 >        for (boolean fFirst : new boolean[] { true, false })
2779 >        for (Integer v1 : new Integer[] { 1, null })
2780 >    {
2781 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
2782 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
2783 >        final CFException ex = new CFException();
2784 >        final Noop[] rs = new Noop[6];
2785 >        for (int i = 0; i < rs.length; i++) rs[i] = new Noop(m);
2786 >
2787 >        final CompletableFuture<Void> h0 = m.runAfterEither(f, g, rs[0]);
2788 >        final CompletableFuture<Void> h1 = m.runAfterEither(g, f, rs[1]);
2789 >        assertTrue( fFirst ? f.complete(v1) : g.completeExceptionally(ex));
2790 >        assertTrue(!fFirst ? f.complete(v1) : g.completeExceptionally(ex));
2791 >        final CompletableFuture<Void> h2 = m.runAfterEither(f, g, rs[2]);
2792 >        final CompletableFuture<Void> h3 = m.runAfterEither(g, f, rs[3]);
2793  
2794 <        f = new CompletableFuture<Integer>();
2795 <        f2 = new CompletableFuture<Integer>();
2796 <        g = f.thenCombineAsync(f2, add, new ThreadExecutor());
2797 <        f.complete(one);
2798 <        assertTrue(f2.cancel(true));
2799 <        checkCompletedWithWrappedCancellationException(g);
2800 <    }
2794 >        // unspecified behavior - both source completions available
2795 >        try {
2796 >            assertEquals(null, h0.join());
2797 >            rs[0].assertInvoked();
2798 >        } catch (CompletionException ok) {
2799 >            checkCompletedWithWrappedException(h0, ex);
2800 >            rs[0].assertNotInvoked();
2801 >        }
2802 >        try {
2803 >            assertEquals(null, h1.join());
2804 >            rs[1].assertInvoked();
2805 >        } catch (CompletionException ok) {
2806 >            checkCompletedWithWrappedException(h1, ex);
2807 >            rs[1].assertNotInvoked();
2808 >        }
2809 >        try {
2810 >            assertEquals(null, h2.join());
2811 >            rs[2].assertInvoked();
2812 >        } catch (CompletionException ok) {
2813 >            checkCompletedWithWrappedException(h2, ex);
2814 >            rs[2].assertNotInvoked();
2815 >        }
2816 >        try {
2817 >            assertEquals(null, h3.join());
2818 >            rs[3].assertInvoked();
2819 >        } catch (CompletionException ok) {
2820 >            checkCompletedWithWrappedException(h3, ex);
2821 >            rs[3].assertNotInvoked();
2822 >        }
2823  
2824 <    /**
2825 <     * thenAcceptBothAsync result completes normally after normal
2826 <     * completion of sources
1937 <     */
1938 <    public void testThenAcceptBothAsyncE() {
1939 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
1940 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
1941 <        AddAction r = new AddAction();
1942 <        CompletableFuture<Void> g = f.thenAcceptBothAsync(f2, r, new ThreadExecutor());
1943 <        f.complete(one);
1944 <        checkIncomplete(g);
1945 <        f2.complete(two);
1946 <        checkCompletedNormally(g, null);
1947 <        assertEquals(r.value, 3);
1948 <    }
2824 >        checkCompletedNormally(f, v1);
2825 >        checkCompletedExceptionally(g, ex);
2826 >    }}
2827  
2828      /**
2829 <     * thenAcceptBothAsync result completes exceptionally after exceptional
1952 <     * completion of source
2829 >     * runAfterEither result completes exceptionally if either source cancelled
2830       */
2831 <    public void testThenAcceptBothAsync2E() {
2832 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
2833 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
2834 <        AddAction r = new AddAction();
2835 <        CompletableFuture<Void> g = f.thenAcceptBothAsync(f2, r, new ThreadExecutor());
2836 <        f.completeExceptionally(new CFException());
2837 <        f2.complete(two);
2838 <        checkCompletedWithWrappedCFException(g);
2839 <
2840 <        r = new AddAction();
2841 <        f = new CompletableFuture<Integer>();
2842 <        f2 = new CompletableFuture<Integer>();
2843 <        g = f.thenAcceptBothAsync(f2, r, new ThreadExecutor());
2844 <        f.complete(one);
2845 <        f2.completeExceptionally(new CFException());
2846 <        checkCompletedWithWrappedCFException(g);
2847 <    }
2831 >    public void testRunAfterEither_sourceCancelled() {
2832 >        for (ExecutionMode m : ExecutionMode.values())
2833 >        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2834 >        for (Integer v1 : new Integer[] { 1, null })
2835 >    {
2836 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
2837 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
2838 >        final Noop[] rs = new Noop[6];
2839 >        for (int i = 0; i < rs.length; i++) rs[i] = new Noop(m);
2840 >
2841 >        final CompletableFuture<Void> h0 = m.runAfterEither(f, g, rs[0]);
2842 >        final CompletableFuture<Void> h1 = m.runAfterEither(g, f, rs[1]);
2843 >        checkIncomplete(h0);
2844 >        checkIncomplete(h1);
2845 >        rs[0].assertNotInvoked();
2846 >        rs[1].assertNotInvoked();
2847 >        f.cancel(mayInterruptIfRunning);
2848 >        checkCompletedWithWrappedCancellationException(h0);
2849 >        checkCompletedWithWrappedCancellationException(h1);
2850 >        final CompletableFuture<Void> h2 = m.runAfterEither(f, g, rs[2]);
2851 >        final CompletableFuture<Void> h3 = m.runAfterEither(g, f, rs[3]);
2852 >        checkCompletedWithWrappedCancellationException(h2);
2853 >        checkCompletedWithWrappedCancellationException(h3);
2854 >
2855 >        assertTrue(g.complete(v1));
2856 >
2857 >        // unspecified behavior - both source completions available
2858 >        final CompletableFuture<Void> h4 = m.runAfterEither(f, g, rs[4]);
2859 >        final CompletableFuture<Void> h5 = m.runAfterEither(g, f, rs[5]);
2860 >        try {
2861 >            assertNull(h4.join());
2862 >            rs[4].assertInvoked();
2863 >        } catch (CompletionException ok) {
2864 >            checkCompletedWithWrappedCancellationException(h4);
2865 >            rs[4].assertNotInvoked();
2866 >        }
2867 >        try {
2868 >            assertNull(h5.join());
2869 >            rs[5].assertInvoked();
2870 >        } catch (CompletionException ok) {
2871 >            checkCompletedWithWrappedCancellationException(h5);
2872 >            rs[5].assertNotInvoked();
2873 >        }
2874  
2875 <    /**
2876 <     * thenAcceptBothAsync result completes exceptionally if action does
2877 <     */
2878 <    public void testThenAcceptBothAsync3E() {
2879 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
2880 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
2881 <        FailingBiConsumer r = new FailingBiConsumer();
2882 <        CompletableFuture<Void> g = f.thenAcceptBothAsync(f2, r, new ThreadExecutor());
1980 <        f.complete(one);
1981 <        checkIncomplete(g);
1982 <        f2.complete(two);
1983 <        checkCompletedWithWrappedCFException(g);
1984 <    }
2875 >        checkCancelled(f);
2876 >        checkCompletedNormally(g, v1);
2877 >        checkCompletedWithWrappedCancellationException(h0);
2878 >        checkCompletedWithWrappedCancellationException(h1);
2879 >        checkCompletedWithWrappedCancellationException(h2);
2880 >        checkCompletedWithWrappedCancellationException(h3);
2881 >        for (int i = 0; i < 4; i++) rs[i].assertNotInvoked();
2882 >    }}
2883  
2884      /**
2885 <     * thenAcceptBothAsync result completes exceptionally if either source cancelled
2885 >     * runAfterEither result completes exceptionally if action does
2886       */
2887 <    public void testThenAcceptBothAsync4E() {
2888 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
2889 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
2890 <        AddAction r = new AddAction();
2891 <        CompletableFuture<Void> g = f.thenAcceptBothAsync(f2, r, new ThreadExecutor());
2892 <        assertTrue(f.cancel(true));
2893 <        f2.complete(two);
2894 <        checkCompletedWithWrappedCancellationException(g);
2895 <
2896 <        r = new AddAction();
2897 <        f = new CompletableFuture<Integer>();
2898 <        f2 = new CompletableFuture<Integer>();
2899 <        g = f.thenAcceptBothAsync(f2, r, new ThreadExecutor());
2900 <        f.complete(one);
2901 <        assertTrue(f2.cancel(true));
2902 <        checkCompletedWithWrappedCancellationException(g);
2903 <    }
2887 >    public void testRunAfterEither_actionFailed() {
2888 >        for (ExecutionMode m : ExecutionMode.values())
2889 >        for (Integer v1 : new Integer[] { 1, null })
2890 >        for (Integer v2 : new Integer[] { 2, null })
2891 >    {
2892 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
2893 >        final CompletableFuture<Integer> g = new CompletableFuture<>();
2894 >        final FailingRunnable[] rs = new FailingRunnable[6];
2895 >        for (int i = 0; i < rs.length; i++) rs[i] = new FailingRunnable(m);
2896 >
2897 >        final CompletableFuture<Void> h0 = m.runAfterEither(f, g, rs[0]);
2898 >        final CompletableFuture<Void> h1 = m.runAfterEither(g, f, rs[1]);
2899 >        assertTrue(f.complete(v1));
2900 >        final CompletableFuture<Void> h2 = m.runAfterEither(f, g, rs[2]);
2901 >        final CompletableFuture<Void> h3 = m.runAfterEither(g, f, rs[3]);
2902 >        checkCompletedWithWrappedCFException(h0);
2903 >        checkCompletedWithWrappedCFException(h1);
2904 >        checkCompletedWithWrappedCFException(h2);
2905 >        checkCompletedWithWrappedCFException(h3);
2906 >        for (int i = 0; i < 4; i++) rs[i].assertInvoked();
2907 >        assertTrue(g.complete(v2));
2908 >        final CompletableFuture<Void> h4 = m.runAfterEither(f, g, rs[4]);
2909 >        final CompletableFuture<Void> h5 = m.runAfterEither(g, f, rs[5]);
2910 >        checkCompletedWithWrappedCFException(h4);
2911 >        checkCompletedWithWrappedCFException(h5);
2912 >
2913 >        checkCompletedNormally(f, v1);
2914 >        checkCompletedNormally(g, v2);
2915 >        for (int i = 0; i < 6; i++) rs[i].assertInvoked();
2916 >    }}
2917  
2918      /**
2919 <     * runAfterBothAsync result completes normally after normal
2009 <     * completion of sources
2919 >     * thenCompose result completes normally after normal completion of source
2920       */
2921 <    public void testRunAfterBothAsyncE() {
2922 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
2923 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
2924 <        Noop r = new Noop();
2925 <        CompletableFuture<Void> g = f.runAfterBothAsync(f2, r, new ThreadExecutor());
2926 <        f.complete(one);
2927 <        checkIncomplete(g);
2928 <        f2.complete(two);
2929 <        checkCompletedNormally(g, null);
2930 <        assertTrue(r.ran);
2931 <    }
2921 >    public void testThenCompose_normalCompletion() {
2922 >        for (ExecutionMode m : ExecutionMode.values())
2923 >        for (boolean createIncomplete : new boolean[] { true, false })
2924 >        for (Integer v1 : new Integer[] { 1, null })
2925 >    {
2926 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
2927 >        final CompletableFutureInc r = new CompletableFutureInc(m);
2928 >        if (!createIncomplete) assertTrue(f.complete(v1));
2929 >        final CompletableFuture<Integer> g = m.thenCompose(f, r);
2930 >        if (createIncomplete) assertTrue(f.complete(v1));
2931 >
2932 >        checkCompletedNormally(g, inc(v1));
2933 >        checkCompletedNormally(f, v1);
2934 >        r.assertValue(v1);
2935 >    }}
2936  
2937      /**
2938 <     * runAfterBothAsync result completes exceptionally after exceptional
2938 >     * thenCompose result completes exceptionally after exceptional
2939       * completion of source
2940       */
2941 <    public void testRunAfterBothAsync2E() {
2942 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
2943 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
2944 <        Noop r = new Noop();
2945 <        CompletableFuture<Void> g = f.runAfterBothAsync(f2, r, new ThreadExecutor());
2946 <        f.completeExceptionally(new CFException());
2947 <        f2.complete(two);
2948 <        checkCompletedWithWrappedCFException(g);
2949 <
2950 <        r = new Noop();
2951 <        f = new CompletableFuture<Integer>();
2952 <        f2 = new CompletableFuture<Integer>();
2953 <        g = f.runAfterBothAsync(f2, r, new ThreadExecutor());
2954 <        f.complete(one);
2955 <        f2.completeExceptionally(new CFException());
2042 <        checkCompletedWithWrappedCFException(g);
2043 <    }
2044 <
2045 <    /**
2046 <     * runAfterBothAsync result completes exceptionally if action does
2047 <     */
2048 <    public void testRunAfterBothAsync3E() {
2049 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
2050 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
2051 <        FailingNoop r = new FailingNoop();
2052 <        CompletableFuture<Void> g = f.runAfterBothAsync(f2, r, new ThreadExecutor());
2053 <        f.complete(one);
2054 <        checkIncomplete(g);
2055 <        f2.complete(two);
2056 <        checkCompletedWithWrappedCFException(g);
2057 <    }
2941 >    public void testThenCompose_exceptionalCompletion() {
2942 >        for (ExecutionMode m : ExecutionMode.values())
2943 >        for (boolean createIncomplete : new boolean[] { true, false })
2944 >    {
2945 >        final CFException ex = new CFException();
2946 >        final CompletableFutureInc r = new CompletableFutureInc(m);
2947 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
2948 >        if (!createIncomplete) f.completeExceptionally(ex);
2949 >        final CompletableFuture<Integer> g = m.thenCompose(f, r);
2950 >        if (createIncomplete) f.completeExceptionally(ex);
2951 >
2952 >        checkCompletedWithWrappedException(g, ex);
2953 >        checkCompletedExceptionally(f, ex);
2954 >        r.assertNotInvoked();
2955 >    }}
2956  
2957      /**
2958 <     * runAfterBothAsync result completes exceptionally if either source cancelled
2061 <     */
2062 <    public void testRunAfterBothAsync4E() {
2063 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
2064 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
2065 <        Noop r = new Noop();
2066 <        CompletableFuture<Void> g = f.runAfterBothAsync(f2, r, new ThreadExecutor());
2067 <        assertTrue(f.cancel(true));
2068 <        f2.complete(two);
2069 <        checkCompletedWithWrappedCancellationException(g);
2070 <
2071 <        r = new Noop();
2072 <        f = new CompletableFuture<Integer>();
2073 <        f2 = new CompletableFuture<Integer>();
2074 <        g = f.runAfterBothAsync(f2, r, new ThreadExecutor());
2075 <        f.complete(one);
2076 <        assertTrue(f2.cancel(true));
2077 <        checkCompletedWithWrappedCancellationException(g);
2078 <    }
2079 <
2080 <    /**
2081 <     * applyToEitherAsync result completes normally after normal
2082 <     * completion of sources
2083 <     */
2084 <    public void testApplyToEitherAsyncE() {
2085 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
2086 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
2087 <        CompletableFuture<Integer> g = f.applyToEitherAsync(f2, inc, new ThreadExecutor());
2088 <        f.complete(one);
2089 <        checkCompletedNormally(g, two);
2090 <
2091 <        f = new CompletableFuture<Integer>();
2092 <        f.complete(one);
2093 <        f2 = new CompletableFuture<Integer>();
2094 <        g = f.applyToEitherAsync(f2, inc, new ThreadExecutor());
2095 <        checkCompletedNormally(g, two);
2096 <    }
2097 <
2098 <    /**
2099 <     * applyToEitherAsync result completes exceptionally after exceptional
2100 <     * completion of source
2101 <     */
2102 <    public void testApplyToEitherAsync2E() {
2103 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
2104 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
2105 <        CompletableFuture<Integer> g = f.applyToEitherAsync(f2, inc, new ThreadExecutor());
2106 <        f.completeExceptionally(new CFException());
2107 <        checkCompletedWithWrappedCFException(g);
2108 <
2109 <        f = new CompletableFuture<Integer>();
2110 <        f2 = new CompletableFuture<Integer>();
2111 <        f2.completeExceptionally(new CFException());
2112 <        g = f.applyToEitherAsync(f2, inc, new ThreadExecutor());
2113 <        f.complete(one);
2114 <        checkCompletedWithWrappedCFException(g);
2115 <    }
2116 <
2117 <    /**
2118 <     * applyToEitherAsync result completes exceptionally if action does
2119 <     */
2120 <    public void testApplyToEitherAsync3E() {
2121 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
2122 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
2123 <        FailingFunction r = new FailingFunction();
2124 <        CompletableFuture<Integer> g = f.applyToEitherAsync(f2, r, new ThreadExecutor());
2125 <        f.complete(one);
2126 <        checkCompletedWithWrappedCFException(g);
2127 <    }
2128 <
2129 <    /**
2130 <     * applyToEitherAsync result completes exceptionally if either source cancelled
2131 <     */
2132 <    public void testApplyToEitherAsync4E() {
2133 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
2134 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
2135 <        CompletableFuture<Integer> g = f.applyToEitherAsync(f2, inc, new ThreadExecutor());
2136 <        assertTrue(f.cancel(true));
2137 <        checkCompletedWithWrappedCancellationException(g);
2138 <
2139 <        f = new CompletableFuture<Integer>();
2140 <        f2 = new CompletableFuture<Integer>();
2141 <        assertTrue(f2.cancel(true));
2142 <        g = f.applyToEitherAsync(f2, inc, new ThreadExecutor());
2143 <        checkCompletedWithWrappedCancellationException(g);
2144 <    }
2145 <
2146 <    /**
2147 <     * acceptEitherAsync result completes normally after normal
2148 <     * completion of sources
2149 <     */
2150 <    public void testAcceptEitherAsyncE() {
2151 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
2152 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
2153 <        IncAction r = new IncAction();
2154 <        CompletableFuture<Void> g = f.acceptEitherAsync(f2, r, new ThreadExecutor());
2155 <        f.complete(one);
2156 <        checkCompletedNormally(g, null);
2157 <        assertEquals(r.value, 2);
2158 <
2159 <        r = new IncAction();
2160 <        f = new CompletableFuture<Integer>();
2161 <        f.complete(one);
2162 <        f2 = new CompletableFuture<Integer>();
2163 <        g = f.acceptEitherAsync(f2, r, new ThreadExecutor());
2164 <        checkCompletedNormally(g, null);
2165 <        assertEquals(r.value, 2);
2166 <    }
2167 <
2168 <    /**
2169 <     * acceptEitherAsync result completes exceptionally after exceptional
2170 <     * completion of source
2958 >     * thenCompose result completes exceptionally if action does
2959       */
2960 <    public void testAcceptEitherAsync2E() {
2961 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
2962 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
2963 <        IncAction r = new IncAction();
2964 <        CompletableFuture<Void> g = f.acceptEitherAsync(f2, r, new ThreadExecutor());
2965 <        f.completeExceptionally(new CFException());
2966 <        checkCompletedWithWrappedCFException(g);
2967 <
2968 <        r = new IncAction();
2969 <        f = new CompletableFuture<Integer>();
2970 <        f2 = new CompletableFuture<Integer>();
2183 <        f2.completeExceptionally(new CFException());
2184 <        g = f.acceptEitherAsync(f2, r, new ThreadExecutor());
2185 <        f.complete(one);
2186 <        checkCompletedWithWrappedCFException(g);
2187 <    }
2960 >    public void testThenCompose_actionFailed() {
2961 >        for (ExecutionMode m : ExecutionMode.values())
2962 >        for (boolean createIncomplete : new boolean[] { true, false })
2963 >        for (Integer v1 : new Integer[] { 1, null })
2964 >    {
2965 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
2966 >        final FailingCompletableFutureFunction r
2967 >            = new FailingCompletableFutureFunction(m);
2968 >        if (!createIncomplete) assertTrue(f.complete(v1));
2969 >        final CompletableFuture<Integer> g = m.thenCompose(f, r);
2970 >        if (createIncomplete) assertTrue(f.complete(v1));
2971  
2189    /**
2190     * acceptEitherAsync result completes exceptionally if action does
2191     */
2192    public void testAcceptEitherAsync3E() {
2193        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
2194        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
2195        FailingConsumer r = new FailingConsumer();
2196        CompletableFuture<Void> g = f.acceptEitherAsync(f2, r, new ThreadExecutor());
2197        f.complete(one);
2972          checkCompletedWithWrappedCFException(g);
2973 <    }
2973 >        checkCompletedNormally(f, v1);
2974 >    }}
2975  
2976      /**
2977 <     * acceptEitherAsync result completes exceptionally if either
2203 <     * source cancelled
2977 >     * thenCompose result completes exceptionally if source cancelled
2978       */
2979 <    public void testAcceptEitherAsync4E() {
2980 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
2981 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
2982 <        IncAction r = new IncAction();
2983 <        CompletableFuture<Void> g = f.acceptEitherAsync(f2, r, new ThreadExecutor());
2984 <        assertTrue(f.cancel(true));
2985 <        checkCompletedWithWrappedCancellationException(g);
2979 >    public void testThenCompose_sourceCancelled() {
2980 >        for (ExecutionMode m : ExecutionMode.values())
2981 >        for (boolean createIncomplete : new boolean[] { true, false })
2982 >        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2983 >    {
2984 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
2985 >        final CompletableFutureInc r = new CompletableFutureInc(m);
2986 >        if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
2987 >        final CompletableFuture<Integer> g = m.thenCompose(f, r);
2988 >        if (createIncomplete) {
2989 >            checkIncomplete(g);
2990 >            assertTrue(f.cancel(mayInterruptIfRunning));
2991 >        }
2992  
2213        r = new IncAction();
2214        f = new CompletableFuture<Integer>();
2215        f2 = new CompletableFuture<Integer>();
2216        assertTrue(f2.cancel(true));
2217        g = f.acceptEitherAsync(f2, r, new ThreadExecutor());
2993          checkCompletedWithWrappedCancellationException(g);
2994 <    }
2995 <
2221 <    /**
2222 <     * runAfterEitherAsync result completes normally after normal
2223 <     * completion of sources
2224 <     */
2225 <    public void testRunAfterEitherAsyncE() {
2226 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
2227 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
2228 <        Noop r = new Noop();
2229 <        CompletableFuture<Void> g = f.runAfterEitherAsync(f2, r, new ThreadExecutor());
2230 <        f.complete(one);
2231 <        checkCompletedNormally(g, null);
2232 <        assertTrue(r.ran);
2233 <
2234 <        r = new Noop();
2235 <        f = new CompletableFuture<Integer>();
2236 <        f.complete(one);
2237 <        f2 = new CompletableFuture<Integer>();
2238 <        g = f.runAfterEitherAsync(f2, r, new ThreadExecutor());
2239 <        checkCompletedNormally(g, null);
2240 <        assertTrue(r.ran);
2241 <    }
2242 <
2243 <    /**
2244 <     * runAfterEitherAsync result completes exceptionally after exceptional
2245 <     * completion of source
2246 <     */
2247 <    public void testRunAfterEitherAsync2E() {
2248 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
2249 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
2250 <        Noop r = new Noop();
2251 <        CompletableFuture<Void> g = f.runAfterEitherAsync(f2, r, new ThreadExecutor());
2252 <        f.completeExceptionally(new CFException());
2253 <        checkCompletedWithWrappedCFException(g);
2254 <
2255 <        r = new Noop();
2256 <        f = new CompletableFuture<Integer>();
2257 <        f2 = new CompletableFuture<Integer>();
2258 <        f2.completeExceptionally(new CFException());
2259 <        g = f.runAfterEitherAsync(f2, r, new ThreadExecutor());
2260 <        f.complete(one);
2261 <        checkCompletedWithWrappedCFException(g);
2262 <    }
2994 >        checkCancelled(f);
2995 >    }}
2996  
2997 <    /**
2265 <     * runAfterEitherAsync result completes exceptionally if action does
2266 <     */
2267 <    public void testRunAfterEitherAsync3E() {
2268 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
2269 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
2270 <        FailingNoop r = new FailingNoop();
2271 <        CompletableFuture<Void> g = f.runAfterEitherAsync(f2, r, new ThreadExecutor());
2272 <        f.complete(one);
2273 <        checkCompletedWithWrappedCFException(g);
2274 <    }
2997 >    // other static methods
2998  
2999      /**
3000 <     * runAfterEitherAsync result completes exceptionally if either
3001 <     * source cancelled
3000 >     * allOf(no component futures) returns a future completed normally
3001 >     * with the value null
3002       */
3003 <    public void testRunAfterEitherAsync4E() {
3004 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
3005 <        CompletableFuture<Integer> f2 = new CompletableFuture<Integer>();
2283 <        Noop r = new Noop();
2284 <        CompletableFuture<Void> g = f.runAfterEitherAsync(f2, r, new ThreadExecutor());
2285 <        assertTrue(f.cancel(true));
2286 <        checkCompletedWithWrappedCancellationException(g);
2287 <
2288 <        r = new Noop();
2289 <        f = new CompletableFuture<Integer>();
2290 <        f2 = new CompletableFuture<Integer>();
2291 <        assertTrue(f2.cancel(true));
2292 <        g = f.runAfterEitherAsync(f2, r, new ThreadExecutor());
2293 <        checkCompletedWithWrappedCancellationException(g);
3003 >    public void testAllOf_empty() throws Exception {
3004 >        CompletableFuture<Void> f = CompletableFuture.allOf();
3005 >        checkCompletedNormally(f, null);
3006      }
3007  
3008      /**
3009 <     * thenComposeAsync result completes normally after normal
3010 <     * completion of source
3009 >     * allOf returns a future completed normally with the value null
3010 >     * when all components complete normally
3011       */
3012 <    public void testThenComposeAsyncE() {
3013 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
3014 <        CompletableFutureInc r = new CompletableFutureInc();
3015 <        CompletableFuture<Integer> g = f.thenComposeAsync(r, new ThreadExecutor());
3016 <        f.complete(one);
3017 <        checkCompletedNormally(g, two);
3012 >    public void testAllOf_normal() throws Exception {
3013 >        for (int k = 1; k < 10; k++) {
3014 >            CompletableFuture<Integer>[] fs
3015 >                = (CompletableFuture<Integer>[]) new CompletableFuture[k];
3016 >            for (int i = 0; i < k; i++)
3017 >                fs[i] = new CompletableFuture<>();
3018 >            CompletableFuture<Void> f = CompletableFuture.allOf(fs);
3019 >            for (int i = 0; i < k; i++) {
3020 >                checkIncomplete(f);
3021 >                checkIncomplete(CompletableFuture.allOf(fs));
3022 >                fs[i].complete(one);
3023 >            }
3024 >            checkCompletedNormally(f, null);
3025 >            checkCompletedNormally(CompletableFuture.allOf(fs), null);
3026 >        }
3027      }
3028  
3029 <    /**
3030 <     * thenComposeAsync result completes exceptionally after
3031 <     * exceptional completion of source
3032 <     */
3033 <    public void testThenComposeAsync2E() {
3034 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
3035 <        CompletableFutureInc r = new CompletableFutureInc();
3036 <        CompletableFuture<Integer> g = f.thenComposeAsync(r, new ThreadExecutor());
3037 <        f.completeExceptionally(new CFException());
3038 <        checkCompletedWithWrappedCFException(g);
3029 >    public void testAllOf_backwards() throws Exception {
3030 >        for (int k = 1; k < 10; k++) {
3031 >            CompletableFuture<Integer>[] fs
3032 >                = (CompletableFuture<Integer>[]) new CompletableFuture[k];
3033 >            for (int i = 0; i < k; i++)
3034 >                fs[i] = new CompletableFuture<>();
3035 >            CompletableFuture<Void> f = CompletableFuture.allOf(fs);
3036 >            for (int i = k - 1; i >= 0; i--) {
3037 >                checkIncomplete(f);
3038 >                checkIncomplete(CompletableFuture.allOf(fs));
3039 >                fs[i].complete(one);
3040 >            }
3041 >            checkCompletedNormally(f, null);
3042 >            checkCompletedNormally(CompletableFuture.allOf(fs), null);
3043 >        }
3044      }
3045  
3046 <    /**
3047 <     * thenComposeAsync result completes exceptionally if action does
3048 <     */
3049 <    public void testThenComposeAsync3E() {
3050 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
3051 <        FailingCompletableFutureFunction r = new FailingCompletableFutureFunction();
3052 <        CompletableFuture<Integer> g = f.thenComposeAsync(r, new ThreadExecutor());
3053 <        f.complete(one);
3054 <        checkCompletedWithWrappedCFException(g);
3046 >    public void testAllOf_exceptional() throws Exception {
3047 >        for (int k = 1; k < 10; k++) {
3048 >            CompletableFuture<Integer>[] fs
3049 >                = (CompletableFuture<Integer>[]) new CompletableFuture[k];
3050 >            CFException ex = new CFException();
3051 >            for (int i = 0; i < k; i++)
3052 >                fs[i] = new CompletableFuture<>();
3053 >            CompletableFuture<Void> f = CompletableFuture.allOf(fs);
3054 >            for (int i = 0; i < k; i++) {
3055 >                checkIncomplete(f);
3056 >                checkIncomplete(CompletableFuture.allOf(fs));
3057 >                if (i != k/2) {
3058 >                    fs[i].complete(i);
3059 >                    checkCompletedNormally(fs[i], i);
3060 >                } else {
3061 >                    fs[i].completeExceptionally(ex);
3062 >                    checkCompletedExceptionally(fs[i], ex);
3063 >                }
3064 >            }
3065 >            checkCompletedWithWrappedException(f, ex);
3066 >            checkCompletedWithWrappedException(CompletableFuture.allOf(fs), ex);
3067 >        }
3068      }
3069  
3070      /**
3071 <     * thenComposeAsync result completes exceptionally if source cancelled
3071 >     * anyOf(no component futures) returns an incomplete future
3072       */
3073 <    public void testThenComposeAsync4E() {
3074 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
3075 <        CompletableFutureInc r = new CompletableFutureInc();
3076 <        CompletableFuture<Integer> g = f.thenComposeAsync(r, new ThreadExecutor());
3077 <        assertTrue(f.cancel(true));
2339 <        checkCompletedWithWrappedCancellationException(g);
2340 <    }
3073 >    public void testAnyOf_empty() throws Exception {
3074 >        for (Integer v1 : new Integer[] { 1, null })
3075 >    {
3076 >        CompletableFuture<Object> f = CompletableFuture.anyOf();
3077 >        checkIncomplete(f);
3078  
3079 <    // other static methods
3079 >        f.complete(v1);
3080 >        checkCompletedNormally(f, v1);
3081 >    }}
3082  
3083      /**
3084 <     * allOf(no component futures) returns a future completed normally
3085 <     * with the value null
3084 >     * anyOf returns a future completed normally with a value when
3085 >     * a component future does
3086       */
3087 <    public void testAllOf_empty() throws Exception {
3088 <        CompletableFuture<?> f = CompletableFuture.allOf();
3089 <        checkCompletedNormally(f, null);
3087 >    public void testAnyOf_normal() throws Exception {
3088 >        for (int k = 0; k < 10; k++) {
3089 >            CompletableFuture[] fs = new CompletableFuture[k];
3090 >            for (int i = 0; i < k; i++)
3091 >                fs[i] = new CompletableFuture<>();
3092 >            CompletableFuture<Object> f = CompletableFuture.anyOf(fs);
3093 >            checkIncomplete(f);
3094 >            for (int i = 0; i < k; i++) {
3095 >                fs[i].complete(i);
3096 >                checkCompletedNormally(f, 0);
3097 >                int x = (int) CompletableFuture.anyOf(fs).join();
3098 >                assertTrue(0 <= x && x <= i);
3099 >            }
3100 >        }
3101      }
3102 <
3103 <    /**
2354 <     * allOf returns a future completed when all components complete
2355 <     */
2356 <    public void testAllOf() throws Exception {
2357 <        for (int k = 1; k < 20; ++k) {
3102 >    public void testAnyOf_normal_backwards() throws Exception {
3103 >        for (int k = 0; k < 10; k++) {
3104              CompletableFuture[] fs = new CompletableFuture[k];
3105 <            for (int i = 0; i < k; ++i)
3106 <                fs[i] = new CompletableFuture<Integer>();
3107 <            CompletableFuture<?> f = CompletableFuture.allOf(fs);
3108 <            for (int i = 0; i < k; ++i) {
3109 <                checkIncomplete(f);
3110 <                fs[i].complete(one);
3105 >            for (int i = 0; i < k; i++)
3106 >                fs[i] = new CompletableFuture<>();
3107 >            CompletableFuture<Object> f = CompletableFuture.anyOf(fs);
3108 >            checkIncomplete(f);
3109 >            for (int i = k - 1; i >= 0; i--) {
3110 >                fs[i].complete(i);
3111 >                checkCompletedNormally(f, k - 1);
3112 >                int x = (int) CompletableFuture.anyOf(fs).join();
3113 >                assertTrue(i <= x && x <= k - 1);
3114              }
2366            assertTrue(f.isDone());
2367            assertFalse(f.isCancelled());
3115          }
3116      }
3117  
3118      /**
3119 <     * anyOf(no component futures) returns an incomplete future
3119 >     * anyOf result completes exceptionally when any component does.
3120       */
3121 <    public void testAnyOf_empty() throws Exception {
3122 <        CompletableFuture<?> f = CompletableFuture.anyOf();
3123 <        checkIncomplete(f);
3121 >    public void testAnyOf_exceptional() throws Exception {
3122 >        for (int k = 0; k < 10; k++) {
3123 >            CompletableFuture[] fs = new CompletableFuture[k];
3124 >            CFException[] exs = new CFException[k];
3125 >            for (int i = 0; i < k; i++) {
3126 >                fs[i] = new CompletableFuture<>();
3127 >                exs[i] = new CFException();
3128 >            }
3129 >            CompletableFuture<Object> f = CompletableFuture.anyOf(fs);
3130 >            checkIncomplete(f);
3131 >            for (int i = 0; i < k; i++) {
3132 >                fs[i].completeExceptionally(exs[i]);
3133 >                checkCompletedWithWrappedException(f, exs[0]);
3134 >                checkCompletedWithWrappedCFException(CompletableFuture.anyOf(fs));
3135 >            }
3136 >        }
3137      }
3138  
3139 <    /**
3140 <     * allOf returns a future completed when any components complete
2381 <     */
2382 <    public void testAnyOf() throws Exception {
2383 <        for (int k = 1; k < 20; ++k) {
3139 >    public void testAnyOf_exceptional_backwards() throws Exception {
3140 >        for (int k = 0; k < 10; k++) {
3141              CompletableFuture[] fs = new CompletableFuture[k];
3142 <            for (int i = 0; i < k; ++i)
3143 <                fs[i] = new CompletableFuture<Integer>();
3144 <            CompletableFuture<?> f = CompletableFuture.anyOf(fs);
3142 >            CFException[] exs = new CFException[k];
3143 >            for (int i = 0; i < k; i++) {
3144 >                fs[i] = new CompletableFuture<>();
3145 >                exs[i] = new CFException();
3146 >            }
3147 >            CompletableFuture<Object> f = CompletableFuture.anyOf(fs);
3148              checkIncomplete(f);
3149 <            for (int i = 0; i < k; ++i) {
3150 <                fs[i].complete(one);
3151 <                assertTrue(f.isDone());
3149 >            for (int i = k - 1; i >= 0; i--) {
3150 >                fs[i].completeExceptionally(exs[i]);
3151 >                checkCompletedWithWrappedException(f, exs[k - 1]);
3152 >                checkCompletedWithWrappedCFException(CompletableFuture.anyOf(fs));
3153              }
3154          }
3155      }
# Line 2397 | Line 3158 | public class CompletableFutureTest exten
3158       * Completion methods throw NullPointerException with null arguments
3159       */
3160      public void testNPE() {
3161 <        CompletableFuture<Integer> f = new CompletableFuture<Integer>();
3162 <        CompletableFuture<Integer> g = new CompletableFuture<Integer>();
3163 <        CompletableFuture h;
3164 <        try { h = f.thenApply(null); } catch (NullPointerException ok) {}
3165 <        try { h = f.thenAccept(null); } catch (NullPointerException ok) {}
3166 <        try { h = f.thenRun(null); } catch (NullPointerException ok) {}
3167 <        try { h = f.thenCombine(g, null); } catch (NullPointerException ok) {}
3168 <        try { h = f.thenCombine(null, null); } catch (NullPointerException ok) {}
3169 <        try { h = f.applyToEither(g, null); } catch (NullPointerException ok) {}
3170 <        try { h = f.applyToEither(null, null); } catch (NullPointerException ok) {}
3171 <        try { h = f.thenAcceptBoth(g, null); } catch (NullPointerException ok) {}
3172 <        try { h = f.thenAcceptBoth(null, null); } catch (NullPointerException ok) {}
3173 <        try { h = f.runAfterEither(g, null); } catch (NullPointerException ok) {}
3174 <        try { h = f.runAfterEither(null, null); } catch (NullPointerException ok) {}
3175 <        try { h = f.runAfterBoth(g, null); } catch (NullPointerException ok) {}
3176 <        try { h = f.runAfterBoth(null, null); } catch (NullPointerException ok) {}
3177 <        try { h = f.exceptionally(null); } catch (NullPointerException ok) {}
3178 <        try { h = f.handle(null); } catch (NullPointerException ok) {}
3179 <        try { h = f.thenCompose(null); } catch (NullPointerException ok) {}
3180 <
3181 <        try { h = f.thenApplyAsync(null); } catch (NullPointerException ok) {}
3182 <        try { h = f.thenAcceptAsync(null); } catch (NullPointerException ok) {}
3183 <        try { h = f.thenRunAsync(null); } catch (NullPointerException ok) {}
3184 <        try { h = f.thenCombineAsync(g, null); } catch (NullPointerException ok) {}
3185 <        try { h = f.thenCombineAsync(null, null); } catch (NullPointerException ok) {}
3186 <        try { h = f.applyToEitherAsync(g, null); } catch (NullPointerException ok) {}
3187 <        try { h = f.applyToEitherAsync(null, null); } catch (NullPointerException ok) {}
3188 <        try { h = f.thenAcceptBothAsync(g, null); } catch (NullPointerException ok) {}
3189 <        try { h = f.thenAcceptBothAsync(null, null); } catch (NullPointerException ok) {}
3190 <        try { h = f.runAfterEitherAsync(g, null); } catch (NullPointerException ok) {}
3191 <        try { h = f.runAfterEitherAsync(null, null); } catch (NullPointerException ok) {}
3192 <        try { h = f.runAfterBothAsync(g, null); } catch (NullPointerException ok) {}
3193 <        try { h = f.runAfterBothAsync(null, null); } catch (NullPointerException ok) {}
3194 <
3161 >        CompletableFuture<Integer> f = new CompletableFuture<>();
3162 >        CompletableFuture<Integer> g = new CompletableFuture<>();
3163 >        CompletableFuture<Integer> nullFuture = (CompletableFuture<Integer>)null;
3164 >        CompletableFuture<?> h;
3165 >        ThreadExecutor exec = new ThreadExecutor();
3166 >
3167 >        Runnable[] throwingActions = {
3168 >            () -> CompletableFuture.supplyAsync(null),
3169 >            () -> CompletableFuture.supplyAsync(null, exec),
3170 >            () -> CompletableFuture.supplyAsync(new IntegerSupplier(ExecutionMode.SYNC, 42), null),
3171 >
3172 >            () -> CompletableFuture.runAsync(null),
3173 >            () -> CompletableFuture.runAsync(null, exec),
3174 >            () -> CompletableFuture.runAsync(() -> {}, null),
3175 >
3176 >            () -> f.completeExceptionally(null),
3177 >
3178 >            () -> f.thenApply(null),
3179 >            () -> f.thenApplyAsync(null),
3180 >            () -> f.thenApplyAsync((x) -> x, null),
3181 >            () -> f.thenApplyAsync(null, exec),
3182 >
3183 >            () -> f.thenAccept(null),
3184 >            () -> f.thenAcceptAsync(null),
3185 >            () -> f.thenAcceptAsync((x) -> {} , null),
3186 >            () -> f.thenAcceptAsync(null, exec),
3187 >
3188 >            () -> f.thenRun(null),
3189 >            () -> f.thenRunAsync(null),
3190 >            () -> f.thenRunAsync(() -> {} , null),
3191 >            () -> f.thenRunAsync(null, exec),
3192 >
3193 >            () -> f.thenCombine(g, null),
3194 >            () -> f.thenCombineAsync(g, null),
3195 >            () -> f.thenCombineAsync(g, null, exec),
3196 >            () -> f.thenCombine(nullFuture, (x, y) -> x),
3197 >            () -> f.thenCombineAsync(nullFuture, (x, y) -> x),
3198 >            () -> f.thenCombineAsync(nullFuture, (x, y) -> x, exec),
3199 >            () -> f.thenCombineAsync(g, (x, y) -> x, null),
3200 >
3201 >            () -> f.thenAcceptBoth(g, null),
3202 >            () -> f.thenAcceptBothAsync(g, null),
3203 >            () -> f.thenAcceptBothAsync(g, null, exec),
3204 >            () -> f.thenAcceptBoth(nullFuture, (x, y) -> {}),
3205 >            () -> f.thenAcceptBothAsync(nullFuture, (x, y) -> {}),
3206 >            () -> f.thenAcceptBothAsync(nullFuture, (x, y) -> {}, exec),
3207 >            () -> f.thenAcceptBothAsync(g, (x, y) -> {}, null),
3208 >
3209 >            () -> f.runAfterBoth(g, null),
3210 >            () -> f.runAfterBothAsync(g, null),
3211 >            () -> f.runAfterBothAsync(g, null, exec),
3212 >            () -> f.runAfterBoth(nullFuture, () -> {}),
3213 >            () -> f.runAfterBothAsync(nullFuture, () -> {}),
3214 >            () -> f.runAfterBothAsync(nullFuture, () -> {}, exec),
3215 >            () -> f.runAfterBothAsync(g, () -> {}, null),
3216 >
3217 >            () -> f.applyToEither(g, null),
3218 >            () -> f.applyToEitherAsync(g, null),
3219 >            () -> f.applyToEitherAsync(g, null, exec),
3220 >            () -> f.applyToEither(nullFuture, (x) -> x),
3221 >            () -> f.applyToEitherAsync(nullFuture, (x) -> x),
3222 >            () -> f.applyToEitherAsync(nullFuture, (x) -> x, exec),
3223 >            () -> f.applyToEitherAsync(g, (x) -> x, null),
3224 >
3225 >            () -> f.acceptEither(g, null),
3226 >            () -> f.acceptEitherAsync(g, null),
3227 >            () -> f.acceptEitherAsync(g, null, exec),
3228 >            () -> f.acceptEither(nullFuture, (x) -> {}),
3229 >            () -> f.acceptEitherAsync(nullFuture, (x) -> {}),
3230 >            () -> f.acceptEitherAsync(nullFuture, (x) -> {}, exec),
3231 >            () -> f.acceptEitherAsync(g, (x) -> {}, null),
3232 >
3233 >            () -> f.runAfterEither(g, null),
3234 >            () -> f.runAfterEitherAsync(g, null),
3235 >            () -> f.runAfterEitherAsync(g, null, exec),
3236 >            () -> f.runAfterEither(nullFuture, () -> {}),
3237 >            () -> f.runAfterEitherAsync(nullFuture, () -> {}),
3238 >            () -> f.runAfterEitherAsync(nullFuture, () -> {}, exec),
3239 >            () -> f.runAfterEitherAsync(g, () -> {}, null),
3240 >
3241 >            () -> f.thenCompose(null),
3242 >            () -> f.thenComposeAsync(null),
3243 >            () -> f.thenComposeAsync(new CompletableFutureInc(ExecutionMode.EXECUTOR), null),
3244 >            () -> f.thenComposeAsync(null, exec),
3245 >
3246 >            () -> f.exceptionally(null),
3247 >
3248 >            () -> f.handle(null),
3249 >
3250 >            () -> CompletableFuture.allOf((CompletableFuture<?>)null),
3251 >            () -> CompletableFuture.allOf((CompletableFuture<?>[])null),
3252 >            () -> CompletableFuture.allOf(f, null),
3253 >            () -> CompletableFuture.allOf(null, f),
3254 >
3255 >            () -> CompletableFuture.anyOf((CompletableFuture<?>)null),
3256 >            () -> CompletableFuture.anyOf((CompletableFuture<?>[])null),
3257 >            () -> CompletableFuture.anyOf(f, null),
3258 >            () -> CompletableFuture.anyOf(null, f),
3259 >
3260 >            () -> f.obtrudeException(null),
3261 >        };
3262 >
3263 >        assertThrows(NullPointerException.class, throwingActions);
3264 >        assertEquals(0, exec.count.get());
3265 >    }
3266 >
3267 >    /**
3268 >     * toCompletableFuture returns this CompletableFuture.
3269 >     */
3270 >    public void testToCompletableFuture() {
3271 >        CompletableFuture<Integer> f = new CompletableFuture<>();
3272 >        assertSame(f, f.toCompletableFuture());
3273      }
3274  
3275 +    //--- tests of implementation details; not part of official tck ---
3276 +
3277 +    Object resultOf(CompletableFuture<?> f) {
3278 +        try {
3279 +            java.lang.reflect.Field resultField
3280 +                = CompletableFuture.class.getDeclaredField("result");
3281 +            resultField.setAccessible(true);
3282 +            return resultField.get(f);
3283 +        } catch (Throwable t) { throw new AssertionError(t); }
3284 +    }
3285 +
3286 +    public void testExceptionPropagationReusesResultObject() {
3287 +        if (!testImplementationDetails) return;
3288 +        for (ExecutionMode m : ExecutionMode.values())
3289 +    {
3290 +        final CFException ex = new CFException();
3291 +        final CompletableFuture<Integer> v42 = CompletableFuture.completedFuture(42);
3292 +        final CompletableFuture<Integer> incomplete = new CompletableFuture<>();
3293 +
3294 +        List<Function<CompletableFuture<Integer>, CompletableFuture<?>>> funs
3295 +            = new ArrayList<>();
3296 +
3297 +        funs.add((y) -> m.thenRun(y, new Noop(m)));
3298 +        funs.add((y) -> m.thenAccept(y, new NoopConsumer(m)));
3299 +        funs.add((y) -> m.thenApply(y, new IncFunction(m)));
3300 +
3301 +        funs.add((y) -> m.runAfterEither(y, incomplete, new Noop(m)));
3302 +        funs.add((y) -> m.acceptEither(y, incomplete, new NoopConsumer(m)));
3303 +        funs.add((y) -> m.applyToEither(y, incomplete, new IncFunction(m)));
3304 +
3305 +        funs.add((y) -> m.runAfterBoth(y, v42, new Noop(m)));
3306 +        funs.add((y) -> m.thenAcceptBoth(y, v42, new SubtractAction(m)));
3307 +        funs.add((y) -> m.thenCombine(y, v42, new SubtractFunction(m)));
3308 +
3309 +        funs.add((y) -> m.whenComplete(y, (Integer x, Throwable t) -> {}));
3310 +
3311 +        funs.add((y) -> m.thenCompose(y, new CompletableFutureInc(m)));
3312 +
3313 +        funs.add((y) -> CompletableFuture.allOf(new CompletableFuture<?>[] {y, v42}));
3314 +        funs.add((y) -> CompletableFuture.anyOf(new CompletableFuture<?>[] {y, incomplete}));
3315 +
3316 +        for (Function<CompletableFuture<Integer>, CompletableFuture<?>>
3317 +                 fun : funs) {
3318 +            CompletableFuture<Integer> f = new CompletableFuture<>();
3319 +            f.completeExceptionally(ex);
3320 +            CompletableFuture<Integer> src = m.thenApply(f, new IncFunction(m));
3321 +            checkCompletedWithWrappedException(src, ex);
3322 +            CompletableFuture<?> dep = fun.apply(src);
3323 +            checkCompletedWithWrappedException(dep, ex);
3324 +            assertSame(resultOf(src), resultOf(dep));
3325 +        }
3326 +
3327 +        for (Function<CompletableFuture<Integer>, CompletableFuture<?>>
3328 +                 fun : funs) {
3329 +            CompletableFuture<Integer> f = new CompletableFuture<>();
3330 +            CompletableFuture<Integer> src = m.thenApply(f, new IncFunction(m));
3331 +            CompletableFuture<?> dep = fun.apply(src);
3332 +            f.completeExceptionally(ex);
3333 +            checkCompletedWithWrappedException(src, ex);
3334 +            checkCompletedWithWrappedException(dep, ex);
3335 +            assertSame(resultOf(src), resultOf(dep));
3336 +        }
3337 +
3338 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
3339 +        for (Function<CompletableFuture<Integer>, CompletableFuture<?>>
3340 +                 fun : funs) {
3341 +            CompletableFuture<Integer> f = new CompletableFuture<>();
3342 +            f.cancel(mayInterruptIfRunning);
3343 +            checkCancelled(f);
3344 +            CompletableFuture<Integer> src = m.thenApply(f, new IncFunction(m));
3345 +            checkCompletedWithWrappedCancellationException(src);
3346 +            CompletableFuture<?> dep = fun.apply(src);
3347 +            checkCompletedWithWrappedCancellationException(dep);
3348 +            assertSame(resultOf(src), resultOf(dep));
3349 +        }
3350 +
3351 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
3352 +        for (Function<CompletableFuture<Integer>, CompletableFuture<?>>
3353 +                 fun : funs) {
3354 +            CompletableFuture<Integer> f = new CompletableFuture<>();
3355 +            CompletableFuture<Integer> src = m.thenApply(f, new IncFunction(m));
3356 +            CompletableFuture<?> dep = fun.apply(src);
3357 +            f.cancel(mayInterruptIfRunning);
3358 +            checkCancelled(f);
3359 +            checkCompletedWithWrappedCancellationException(src);
3360 +            checkCompletedWithWrappedCancellationException(dep);
3361 +            assertSame(resultOf(src), resultOf(dep));
3362 +        }
3363 +    }}
3364  
3365   }

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