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Comparing jsr166/src/test/tck/CompletableFutureTest.java (file contents):
Revision 1.55 by jsr166, Mon Jun 2 21:41:37 2014 UTC vs.
Revision 1.161 by jsr166, Tue Jun 28 14:49:48 2016 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 > import static java.util.concurrent.CompletableFuture.completedFuture;
11 > import static java.util.concurrent.CompletableFuture.failedFuture;
12 >
13 > import java.lang.reflect.Method;
14 > import java.lang.reflect.Modifier;
15 >
16 > import java.util.stream.Collectors;
17 > import java.util.stream.Stream;
18 >
19 > import java.util.ArrayList;
20 > import java.util.Arrays;
21 > import java.util.List;
22 > import java.util.Objects;
23 > import java.util.Set;
24   import java.util.concurrent.Callable;
10 import java.util.concurrent.Executor;
11 import java.util.concurrent.ExecutorService;
12 import java.util.concurrent.Executors;
25   import java.util.concurrent.CancellationException;
14 import java.util.concurrent.CountDownLatch;
15 import java.util.concurrent.ExecutionException;
16 import java.util.concurrent.Future;
26   import java.util.concurrent.CompletableFuture;
27   import java.util.concurrent.CompletionException;
28   import java.util.concurrent.CompletionStage;
29 + import java.util.concurrent.ExecutionException;
30 + import java.util.concurrent.Executor;
31   import java.util.concurrent.ForkJoinPool;
32   import java.util.concurrent.ForkJoinTask;
33 + import java.util.concurrent.RejectedExecutionException;
34   import java.util.concurrent.TimeoutException;
35 + import java.util.concurrent.TimeUnit;
36   import java.util.concurrent.atomic.AtomicInteger;
37 < import static java.util.concurrent.TimeUnit.MILLISECONDS;
25 < import static java.util.concurrent.TimeUnit.SECONDS;
26 < import java.util.*;
27 < import java.util.function.Supplier;
28 < import java.util.function.Consumer;
37 > import java.util.concurrent.atomic.AtomicReference;
38   import java.util.function.BiConsumer;
30 import java.util.function.Function;
39   import java.util.function.BiFunction;
40 + import java.util.function.Consumer;
41 + import java.util.function.Function;
42 + import java.util.function.Predicate;
43 + import java.util.function.Supplier;
44 +
45 + import junit.framework.AssertionFailedError;
46 + import junit.framework.Test;
47 + import junit.framework.TestSuite;
48  
49   public class CompletableFutureTest extends JSR166TestCase {
50  
51      public static void main(String[] args) {
52 <        junit.textui.TestRunner.run(suite());
52 >        main(suite(), args);
53      }
54      public static Test suite() {
55          return new TestSuite(CompletableFutureTest.class);
# Line 44 | Line 60 | public class CompletableFutureTest exten
60      void checkIncomplete(CompletableFuture<?> f) {
61          assertFalse(f.isDone());
62          assertFalse(f.isCancelled());
63 <        assertTrue(f.toString().contains("[Not completed]"));
63 >        assertTrue(f.toString().contains("Not completed"));
64          try {
65              assertNull(f.getNow(null));
66          } catch (Throwable fail) { threadUnexpectedException(fail); }
# Line 57 | Line 73 | public class CompletableFutureTest exten
73      }
74  
75      <T> void checkCompletedNormally(CompletableFuture<T> f, T value) {
76 <        try {
77 <            assertEquals(value, f.get(LONG_DELAY_MS, MILLISECONDS));
62 <        } catch (Throwable fail) { threadUnexpectedException(fail); }
76 >        checkTimedGet(f, value);
77 >
78          try {
79              assertEquals(value, f.join());
80          } catch (Throwable fail) { threadUnexpectedException(fail); }
# Line 75 | Line 90 | public class CompletableFutureTest exten
90          assertTrue(f.toString().contains("[Completed normally]"));
91      }
92  
93 <    void checkCompletedWithWrappedCFException(CompletableFuture<?> f) {
94 <        try {
95 <            f.get(LONG_DELAY_MS, MILLISECONDS);
96 <            shouldThrow();
97 <        } catch (ExecutionException success) {
98 <            assertTrue(success.getCause() instanceof CFException);
99 <        } catch (Throwable fail) { threadUnexpectedException(fail); }
100 <        try {
101 <            f.join();
102 <            shouldThrow();
103 <        } catch (CompletionException success) {
104 <            assertTrue(success.getCause() instanceof CFException);
105 <        }
106 <        try {
107 <            f.getNow(null);
108 <            shouldThrow();
109 <        } catch (CompletionException success) {
95 <            assertTrue(success.getCause() instanceof CFException);
93 >    /**
94 >     * Returns the "raw" internal exceptional completion of f,
95 >     * without any additional wrapping with CompletionException.
96 >     */
97 >    <U> Throwable exceptionalCompletion(CompletableFuture<U> f) {
98 >        // handle (and whenComplete) can distinguish between "direct"
99 >        // and "wrapped" exceptional completion
100 >        return f.handle((U u, Throwable t) -> t).join();
101 >    }
102 >
103 >    void checkCompletedExceptionally(CompletableFuture<?> f,
104 >                                     boolean wrapped,
105 >                                     Consumer<Throwable> checker) {
106 >        Throwable cause = exceptionalCompletion(f);
107 >        if (wrapped) {
108 >            assertTrue(cause instanceof CompletionException);
109 >            cause = cause.getCause();
110          }
111 <        try {
98 <            f.get();
99 <            shouldThrow();
100 <        } catch (ExecutionException success) {
101 <            assertTrue(success.getCause() instanceof CFException);
102 <        } catch (Throwable fail) { threadUnexpectedException(fail); }
103 <        assertTrue(f.isDone());
104 <        assertFalse(f.isCancelled());
105 <        assertTrue(f.toString().contains("[Completed exceptionally]"));
106 <    }
111 >        checker.accept(cause);
112  
113 <    void checkCompletedWithWrappedCFException(CompletableFuture<?> f,
109 <                                              CFException ex) {
113 >        long startTime = System.nanoTime();
114          try {
115              f.get(LONG_DELAY_MS, MILLISECONDS);
116              shouldThrow();
117          } catch (ExecutionException success) {
118 <            assertSame(ex, success.getCause());
118 >            assertSame(cause, success.getCause());
119          } catch (Throwable fail) { threadUnexpectedException(fail); }
120 +        assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS / 2);
121 +
122          try {
123              f.join();
124              shouldThrow();
125          } catch (CompletionException success) {
126 <            assertSame(ex, success.getCause());
127 <        }
126 >            assertSame(cause, success.getCause());
127 >        } catch (Throwable fail) { threadUnexpectedException(fail); }
128 >
129          try {
130              f.getNow(null);
131              shouldThrow();
132          } catch (CompletionException success) {
133 <            assertSame(ex, success.getCause());
134 <        }
133 >            assertSame(cause, success.getCause());
134 >        } catch (Throwable fail) { threadUnexpectedException(fail); }
135 >
136          try {
137              f.get();
138              shouldThrow();
139          } catch (ExecutionException success) {
140 <            assertSame(ex, success.getCause());
140 >            assertSame(cause, success.getCause());
141          } catch (Throwable fail) { threadUnexpectedException(fail); }
142 <        assertTrue(f.isDone());
142 >
143          assertFalse(f.isCancelled());
144 +        assertTrue(f.isDone());
145 +        assertTrue(f.isCompletedExceptionally());
146          assertTrue(f.toString().contains("[Completed exceptionally]"));
147      }
148  
149 +    void checkCompletedWithWrappedCFException(CompletableFuture<?> f) {
150 +        checkCompletedExceptionally(f, true,
151 +            (t) -> assertTrue(t instanceof CFException));
152 +    }
153 +
154 +    void checkCompletedWithWrappedCancellationException(CompletableFuture<?> f) {
155 +        checkCompletedExceptionally(f, true,
156 +            (t) -> assertTrue(t instanceof CancellationException));
157 +    }
158 +
159 +    void checkCompletedWithTimeoutException(CompletableFuture<?> f) {
160 +        checkCompletedExceptionally(f, false,
161 +            (t) -> assertTrue(t instanceof TimeoutException));
162 +    }
163 +
164 +    void checkCompletedWithWrappedException(CompletableFuture<?> f,
165 +                                            Throwable ex) {
166 +        checkCompletedExceptionally(f, true, (t) -> assertSame(t, ex));
167 +    }
168 +
169 +    void checkCompletedExceptionally(CompletableFuture<?> f, Throwable ex) {
170 +        checkCompletedExceptionally(f, false, (t) -> assertSame(t, ex));
171 +    }
172 +
173      void checkCancelled(CompletableFuture<?> f) {
174 +        long startTime = System.nanoTime();
175          try {
176              f.get(LONG_DELAY_MS, MILLISECONDS);
177              shouldThrow();
178          } catch (CancellationException success) {
179          } catch (Throwable fail) { threadUnexpectedException(fail); }
180 +        assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS / 2);
181 +
182          try {
183              f.join();
184              shouldThrow();
# Line 155 | Line 192 | public class CompletableFutureTest exten
192              shouldThrow();
193          } catch (CancellationException success) {
194          } catch (Throwable fail) { threadUnexpectedException(fail); }
158        assertTrue(f.isDone());
159        assertTrue(f.isCompletedExceptionally());
160        assertTrue(f.isCancelled());
161        assertTrue(f.toString().contains("[Completed exceptionally]"));
162    }
195  
196 <    void checkCompletedWithWrappedCancellationException(CompletableFuture<?> f) {
197 <        try {
166 <            f.get(LONG_DELAY_MS, MILLISECONDS);
167 <            shouldThrow();
168 <        } catch (ExecutionException success) {
169 <            assertTrue(success.getCause() instanceof CancellationException);
170 <        } catch (Throwable fail) { threadUnexpectedException(fail); }
171 <        try {
172 <            f.join();
173 <            shouldThrow();
174 <        } catch (CompletionException success) {
175 <            assertTrue(success.getCause() instanceof CancellationException);
176 <        }
177 <        try {
178 <            f.getNow(null);
179 <            shouldThrow();
180 <        } catch (CompletionException success) {
181 <            assertTrue(success.getCause() instanceof CancellationException);
182 <        }
183 <        try {
184 <            f.get();
185 <            shouldThrow();
186 <        } catch (ExecutionException success) {
187 <            assertTrue(success.getCause() instanceof CancellationException);
188 <        } catch (Throwable fail) { threadUnexpectedException(fail); }
196 >        assertTrue(exceptionalCompletion(f) instanceof CancellationException);
197 >
198          assertTrue(f.isDone());
190        assertFalse(f.isCancelled());
199          assertTrue(f.isCompletedExceptionally());
200 +        assertTrue(f.isCancelled());
201          assertTrue(f.toString().contains("[Completed exceptionally]"));
202      }
203  
# Line 206 | Line 215 | public class CompletableFutureTest exten
215       * isCancelled, join, get, and getNow
216       */
217      public void testComplete() {
218 +        for (Integer v1 : new Integer[] { 1, null })
219 +    {
220          CompletableFuture<Integer> f = new CompletableFuture<>();
221          checkIncomplete(f);
222 <        f.complete(one);
223 <        checkCompletedNormally(f, one);
224 <    }
222 >        assertTrue(f.complete(v1));
223 >        assertFalse(f.complete(v1));
224 >        checkCompletedNormally(f, v1);
225 >    }}
226  
227      /**
228       * completeExceptionally completes exceptionally, as indicated by
# Line 218 | Line 230 | public class CompletableFutureTest exten
230       */
231      public void testCompleteExceptionally() {
232          CompletableFuture<Integer> f = new CompletableFuture<>();
233 +        CFException ex = new CFException();
234          checkIncomplete(f);
235 <        f.completeExceptionally(new CFException());
236 <        checkCompletedWithWrappedCFException(f);
235 >        f.completeExceptionally(ex);
236 >        checkCompletedExceptionally(f, ex);
237      }
238  
239      /**
# Line 228 | Line 241 | public class CompletableFutureTest exten
241       * methods isDone, isCancelled, join, get, and getNow
242       */
243      public void testCancel() {
244 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
245 +    {
246          CompletableFuture<Integer> f = new CompletableFuture<>();
247          checkIncomplete(f);
248 <        assertTrue(f.cancel(true));
248 >        assertTrue(f.cancel(mayInterruptIfRunning));
249 >        assertTrue(f.cancel(mayInterruptIfRunning));
250 >        assertTrue(f.cancel(!mayInterruptIfRunning));
251          checkCancelled(f);
252 <    }
252 >    }}
253  
254      /**
255       * obtrudeValue forces completion with given value
# Line 240 | Line 257 | public class CompletableFutureTest exten
257      public void testObtrudeValue() {
258          CompletableFuture<Integer> f = new CompletableFuture<>();
259          checkIncomplete(f);
260 <        f.complete(one);
260 >        assertTrue(f.complete(one));
261          checkCompletedNormally(f, one);
262          f.obtrudeValue(three);
263          checkCompletedNormally(f, three);
# Line 261 | Line 278 | public class CompletableFutureTest exten
278       * obtrudeException forces completion with given exception
279       */
280      public void testObtrudeException() {
281 <        CompletableFuture<Integer> f = new CompletableFuture<>();
282 <        checkIncomplete(f);
283 <        f.complete(one);
284 <        checkCompletedNormally(f, one);
285 <        f.obtrudeException(new CFException());
269 <        checkCompletedWithWrappedCFException(f);
281 >        for (Integer v1 : new Integer[] { 1, null })
282 >    {
283 >        CFException ex;
284 >        CompletableFuture<Integer> f;
285 >
286          f = new CompletableFuture<>();
287 <        f.obtrudeException(new CFException());
288 <        checkCompletedWithWrappedCFException(f);
287 >        assertTrue(f.complete(v1));
288 >        for (int i = 0; i < 2; i++) {
289 >            f.obtrudeException(ex = new CFException());
290 >            checkCompletedExceptionally(f, ex);
291 >        }
292 >
293 >        f = new CompletableFuture<>();
294 >        for (int i = 0; i < 2; i++) {
295 >            f.obtrudeException(ex = new CFException());
296 >            checkCompletedExceptionally(f, ex);
297 >        }
298 >
299          f = new CompletableFuture<>();
300 +        f.completeExceptionally(ex = new CFException());
301 +        f.obtrudeValue(v1);
302 +        checkCompletedNormally(f, v1);
303 +        f.obtrudeException(ex = new CFException());
304 +        checkCompletedExceptionally(f, ex);
305          f.completeExceptionally(new CFException());
306 <        f.obtrudeValue(four);
307 <        checkCompletedNormally(f, four);
308 <        f.obtrudeException(new CFException());
309 <        checkCompletedWithWrappedCFException(f);
279 <    }
306 >        checkCompletedExceptionally(f, ex);
307 >        assertFalse(f.complete(v1));
308 >        checkCompletedExceptionally(f, ex);
309 >    }}
310  
311      /**
312       * getNumberOfDependents returns number of dependent tasks
313       */
314      public void testGetNumberOfDependents() {
315 +        for (ExecutionMode m : ExecutionMode.values())
316 +        for (Integer v1 : new Integer[] { 1, null })
317 +    {
318          CompletableFuture<Integer> f = new CompletableFuture<>();
319          assertEquals(0, f.getNumberOfDependents());
320 <        CompletableFuture g = f.thenRun(new Noop(ExecutionMode.DEFAULT));
320 >        final CompletableFuture<Void> g = m.thenRun(f, new Noop(m));
321          assertEquals(1, f.getNumberOfDependents());
322          assertEquals(0, g.getNumberOfDependents());
323 <        CompletableFuture h = f.thenRun(new Noop(ExecutionMode.DEFAULT));
323 >        final CompletableFuture<Void> h = m.thenRun(f, new Noop(m));
324          assertEquals(2, f.getNumberOfDependents());
325 <        f.complete(1);
325 >        assertEquals(0, h.getNumberOfDependents());
326 >        assertTrue(f.complete(v1));
327          checkCompletedNormally(g, null);
328 +        checkCompletedNormally(h, null);
329          assertEquals(0, f.getNumberOfDependents());
330          assertEquals(0, g.getNumberOfDependents());
331 <    }
331 >        assertEquals(0, h.getNumberOfDependents());
332 >    }}
333  
334      /**
335       * toString indicates current completion state
# Line 304 | Line 340 | public class CompletableFutureTest exten
340          f = new CompletableFuture<String>();
341          assertTrue(f.toString().contains("[Not completed]"));
342  
343 <        f.complete("foo");
343 >        assertTrue(f.complete("foo"));
344          assertTrue(f.toString().contains("[Completed normally]"));
345  
346          f = new CompletableFuture<String>();
347 <        f.completeExceptionally(new IndexOutOfBoundsException());
347 >        assertTrue(f.completeExceptionally(new IndexOutOfBoundsException()));
348          assertTrue(f.toString().contains("[Completed exceptionally]"));
349 +
350 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false }) {
351 +            f = new CompletableFuture<String>();
352 +            assertTrue(f.cancel(mayInterruptIfRunning));
353 +            assertTrue(f.toString().contains("[Completed exceptionally]"));
354 +        }
355      }
356  
357      /**
# Line 320 | Line 362 | public class CompletableFutureTest exten
362          checkCompletedNormally(f, "test");
363      }
364  
365 <    // Choose non-commutative actions for better coverage
365 >    abstract class CheckedAction {
366 >        int invocationCount = 0;
367 >        final ExecutionMode m;
368 >        CheckedAction(ExecutionMode m) { this.m = m; }
369 >        void invoked() {
370 >            m.checkExecutionMode();
371 >            assertEquals(0, invocationCount++);
372 >        }
373 >        void assertNotInvoked() { assertEquals(0, invocationCount); }
374 >        void assertInvoked() { assertEquals(1, invocationCount); }
375 >    }
376  
377 <    // A non-commutative function that handles and produces null values as well.
378 <    static Integer subtract(Integer x, Integer y) {
379 <        return (x == null && y == null) ? null :
380 <            ((x == null) ? 42 : x.intValue())
381 <            - ((y == null) ? 99 : y.intValue());
377 >    abstract class CheckedIntegerAction extends CheckedAction {
378 >        Integer value;
379 >        CheckedIntegerAction(ExecutionMode m) { super(m); }
380 >        void assertValue(Integer expected) {
381 >            assertInvoked();
382 >            assertEquals(expected, value);
383 >        }
384 >    }
385 >
386 >    class IntegerSupplier extends CheckedAction
387 >        implements Supplier<Integer>
388 >    {
389 >        final Integer value;
390 >        IntegerSupplier(ExecutionMode m, Integer value) {
391 >            super(m);
392 >            this.value = value;
393 >        }
394 >        public Integer get() {
395 >            invoked();
396 >            return value;
397 >        }
398      }
399  
400      // A function that handles and produces null values as well.
# Line 334 | Line 402 | public class CompletableFutureTest exten
402          return (x == null) ? null : x + 1;
403      }
404  
405 <    static final Supplier<Integer> supplyOne =
406 <        () -> Integer.valueOf(1);
407 <    static final Function<Integer, Integer> inc =
408 <        (Integer x) -> Integer.valueOf(x.intValue() + 1);
341 <    static final BiFunction<Integer, Integer, Integer> subtract =
342 <        (Integer x, Integer y) -> subtract(x, y);
343 <    static final class IncAction implements Consumer<Integer> {
344 <        int invocationCount = 0;
345 <        Integer value;
405 >    class NoopConsumer extends CheckedIntegerAction
406 >        implements Consumer<Integer>
407 >    {
408 >        NoopConsumer(ExecutionMode m) { super(m); }
409          public void accept(Integer x) {
410 <            invocationCount++;
411 <            value = inc(x);
410 >            invoked();
411 >            value = x;
412          }
413      }
414 <    static final class IncFunction implements Function<Integer,Integer> {
415 <        int invocationCount = 0;
416 <        Integer value;
414 >
415 >    class IncFunction extends CheckedIntegerAction
416 >        implements Function<Integer,Integer>
417 >    {
418 >        IncFunction(ExecutionMode m) { super(m); }
419          public Integer apply(Integer x) {
420 <            invocationCount++;
420 >            invoked();
421              return value = inc(x);
422          }
423      }
424 <    static final class SubtractAction implements BiConsumer<Integer, Integer> {
425 <        int invocationCount = 0;
426 <        Integer value;
427 <        // Check this action was invoked exactly once when result is computed.
424 >
425 >    // Choose non-commutative actions for better coverage
426 >    // A non-commutative function that handles and produces null values as well.
427 >    static Integer subtract(Integer x, Integer y) {
428 >        return (x == null && y == null) ? null :
429 >            ((x == null) ? 42 : x.intValue())
430 >            - ((y == null) ? 99 : y.intValue());
431 >    }
432 >
433 >    class SubtractAction extends CheckedIntegerAction
434 >        implements BiConsumer<Integer, Integer>
435 >    {
436 >        SubtractAction(ExecutionMode m) { super(m); }
437          public void accept(Integer x, Integer y) {
438 <            invocationCount++;
438 >            invoked();
439              value = subtract(x, y);
440          }
441      }
442 <    static final class SubtractFunction implements BiFunction<Integer, Integer, Integer> {
443 <        int invocationCount = 0;
444 <        Integer value;
445 <        // Check this action was invoked exactly once when result is computed.
442 >
443 >    class SubtractFunction extends CheckedIntegerAction
444 >        implements BiFunction<Integer, Integer, Integer>
445 >    {
446 >        SubtractFunction(ExecutionMode m) { super(m); }
447          public Integer apply(Integer x, Integer y) {
448 <            invocationCount++;
448 >            invoked();
449              return value = subtract(x, y);
450          }
451      }
452 <    static final class Noop implements Runnable {
453 <        final ExecutionMode m;
454 <        int invocationCount = 0;
380 <        Noop(ExecutionMode m) { this.m = m; }
452 >
453 >    class Noop extends CheckedAction implements Runnable {
454 >        Noop(ExecutionMode m) { super(m); }
455          public void run() {
456 <            m.checkExecutionMode();
383 <            invocationCount++;
456 >            invoked();
457          }
458      }
459  
460 <    static final class FailingSupplier implements Supplier<Integer> {
461 <        int invocationCount = 0;
460 >    class FailingSupplier extends CheckedAction
461 >        implements Supplier<Integer>
462 >    {
463 >        final CFException ex;
464 >        FailingSupplier(ExecutionMode m) { super(m); ex = new CFException(); }
465          public Integer get() {
466 <            invocationCount++;
467 <            throw new CFException();
466 >            invoked();
467 >            throw ex;
468          }
469      }
470 <    static final class FailingConsumer implements Consumer<Integer> {
471 <        int invocationCount = 0;
470 >
471 >    class FailingConsumer extends CheckedIntegerAction
472 >        implements Consumer<Integer>
473 >    {
474 >        final CFException ex;
475 >        FailingConsumer(ExecutionMode m) { super(m); ex = new CFException(); }
476          public void accept(Integer x) {
477 <            invocationCount++;
478 <            throw new CFException();
477 >            invoked();
478 >            value = x;
479 >            throw ex;
480          }
481      }
482 <    static final class FailingBiConsumer implements BiConsumer<Integer, Integer> {
483 <        int invocationCount = 0;
482 >
483 >    class FailingBiConsumer extends CheckedIntegerAction
484 >        implements BiConsumer<Integer, Integer>
485 >    {
486 >        final CFException ex;
487 >        FailingBiConsumer(ExecutionMode m) { super(m); ex = new CFException(); }
488          public void accept(Integer x, Integer y) {
489 <            invocationCount++;
490 <            throw new CFException();
489 >            invoked();
490 >            value = subtract(x, y);
491 >            throw ex;
492          }
493      }
494 <    static final class FailingFunction implements Function<Integer, Integer> {
495 <        int invocationCount = 0;
494 >
495 >    class FailingFunction extends CheckedIntegerAction
496 >        implements Function<Integer, Integer>
497 >    {
498 >        final CFException ex;
499 >        FailingFunction(ExecutionMode m) { super(m); ex = new CFException(); }
500          public Integer apply(Integer x) {
501 <            invocationCount++;
502 <            throw new CFException();
501 >            invoked();
502 >            value = x;
503 >            throw ex;
504          }
505      }
506 <    static final class FailingBiFunction implements BiFunction<Integer, Integer, Integer> {
507 <        int invocationCount = 0;
506 >
507 >    class FailingBiFunction extends CheckedIntegerAction
508 >        implements BiFunction<Integer, Integer, Integer>
509 >    {
510 >        final CFException ex;
511 >        FailingBiFunction(ExecutionMode m) { super(m); ex = new CFException(); }
512          public Integer apply(Integer x, Integer y) {
513 <            invocationCount++;
514 <            throw new CFException();
513 >            invoked();
514 >            value = subtract(x, y);
515 >            throw ex;
516          }
517      }
518 <    static final class FailingRunnable implements Runnable {
519 <        int invocationCount = 0;
518 >
519 >    class FailingRunnable extends CheckedAction implements Runnable {
520 >        final CFException ex;
521 >        FailingRunnable(ExecutionMode m) { super(m); ex = new CFException(); }
522          public void run() {
523 <            invocationCount++;
524 <            throw new CFException();
523 >            invoked();
524 >            throw ex;
525          }
526      }
527  
528 <    static final class CompletableFutureInc
529 <        implements Function<Integer, CompletableFuture<Integer>> {
530 <        int invocationCount = 0;
528 >    class CompletableFutureInc extends CheckedIntegerAction
529 >        implements Function<Integer, CompletableFuture<Integer>>
530 >    {
531 >        CompletableFutureInc(ExecutionMode m) { super(m); }
532          public CompletableFuture<Integer> apply(Integer x) {
533 <            invocationCount++;
533 >            invoked();
534 >            value = x;
535              CompletableFuture<Integer> f = new CompletableFuture<>();
536 <            f.complete(inc(x));
536 >            assertTrue(f.complete(inc(x)));
537              return f;
538          }
539      }
540  
541 <    static final class FailingCompletableFutureFunction
542 <        implements Function<Integer, CompletableFuture<Integer>> {
543 <        int invocationCount = 0;
541 >    class FailingCompletableFutureFunction extends CheckedIntegerAction
542 >        implements Function<Integer, CompletableFuture<Integer>>
543 >    {
544 >        final CFException ex;
545 >        FailingCompletableFutureFunction(ExecutionMode m) { super(m); ex = new CFException(); }
546          public CompletableFuture<Integer> apply(Integer x) {
547 <            invocationCount++;
548 <            throw new CFException();
547 >            invoked();
548 >            value = x;
549 >            throw ex;
550 >        }
551 >    }
552 >
553 >    static class CountingRejectingExecutor implements Executor {
554 >        final RejectedExecutionException ex = new RejectedExecutionException();
555 >        final AtomicInteger count = new AtomicInteger(0);
556 >        public void execute(Runnable r) {
557 >            count.getAndIncrement();
558 >            throw ex;
559          }
560      }
561  
562      // Used for explicit executor tests
563      static final class ThreadExecutor implements Executor {
564 <        AtomicInteger count = new AtomicInteger(0);
564 >        final AtomicInteger count = new AtomicInteger(0);
565 >        static final ThreadGroup tg = new ThreadGroup("ThreadExecutor");
566 >        static boolean startedCurrentThread() {
567 >            return Thread.currentThread().getThreadGroup() == tg;
568 >        }
569  
570          public void execute(Runnable r) {
571              count.getAndIncrement();
572 <            new Thread(r).start();
572 >            new Thread(tg, r).start();
573          }
574      }
575  
576 +    static final boolean defaultExecutorIsCommonPool
577 +        = ForkJoinPool.getCommonPoolParallelism() > 1;
578 +
579      /**
580       * Permits the testing of parallel code for the 3 different
581 <     * execution modes without repeating all the testing code.
581 >     * execution modes without copy/pasting all the test methods.
582       */
583      enum ExecutionMode {
584 <        DEFAULT {
584 >        SYNC {
585              public void checkExecutionMode() {
586 +                assertFalse(ThreadExecutor.startedCurrentThread());
587                  assertNull(ForkJoinTask.getPool());
588              }
589 +            public CompletableFuture<Void> runAsync(Runnable a) {
590 +                throw new UnsupportedOperationException();
591 +            }
592 +            public <U> CompletableFuture<U> supplyAsync(Supplier<U> a) {
593 +                throw new UnsupportedOperationException();
594 +            }
595              public <T> CompletableFuture<Void> thenRun
596                  (CompletableFuture<T> f, Runnable a) {
597                  return f.thenRun(a);
# Line 531 | Line 657 | public class CompletableFutureTest exten
657  
658          ASYNC {
659              public void checkExecutionMode() {
660 <                assertSame(ForkJoinPool.commonPool(),
661 <                           ForkJoinTask.getPool());
660 >                assertEquals(defaultExecutorIsCommonPool,
661 >                             (ForkJoinPool.commonPool() == ForkJoinTask.getPool()));
662 >            }
663 >            public CompletableFuture<Void> runAsync(Runnable a) {
664 >                return CompletableFuture.runAsync(a);
665 >            }
666 >            public <U> CompletableFuture<U> supplyAsync(Supplier<U> a) {
667 >                return CompletableFuture.supplyAsync(a);
668              }
669              public <T> CompletableFuture<Void> thenRun
670                  (CompletableFuture<T> f, Runnable a) {
# Line 599 | Line 731 | public class CompletableFutureTest exten
731  
732          EXECUTOR {
733              public void checkExecutionMode() {
734 <                //TODO
734 >                assertTrue(ThreadExecutor.startedCurrentThread());
735 >            }
736 >            public CompletableFuture<Void> runAsync(Runnable a) {
737 >                return CompletableFuture.runAsync(a, new ThreadExecutor());
738 >            }
739 >            public <U> CompletableFuture<U> supplyAsync(Supplier<U> a) {
740 >                return CompletableFuture.supplyAsync(a, new ThreadExecutor());
741              }
742              public <T> CompletableFuture<Void> thenRun
743                  (CompletableFuture<T> f, Runnable a) {
# Line 665 | Line 803 | public class CompletableFutureTest exten
803          };
804  
805          public abstract void checkExecutionMode();
806 +        public abstract CompletableFuture<Void> runAsync(Runnable a);
807 +        public abstract <U> CompletableFuture<U> supplyAsync(Supplier<U> a);
808          public abstract <T> CompletableFuture<Void> thenRun
809              (CompletableFuture<T> f, Runnable a);
810          public abstract <T> CompletableFuture<Void> thenAccept
# Line 714 | Line 854 | public class CompletableFutureTest exten
854      {
855          final AtomicInteger a = new AtomicInteger(0);
856          final CompletableFuture<Integer> f = new CompletableFuture<>();
857 <        if (!createIncomplete) f.complete(v1);
857 >        if (!createIncomplete) assertTrue(f.complete(v1));
858          final CompletableFuture<Integer> g = f.exceptionally
859              ((Throwable t) -> {
720                // Should not be called
860                  a.getAndIncrement();
861 <                throw new AssertionError();
861 >                threadFail("should not be called");
862 >                return null;            // unreached
863              });
864 <        if (createIncomplete) f.complete(v1);
864 >        if (createIncomplete) assertTrue(f.complete(v1));
865  
866          checkCompletedNormally(g, v1);
867          checkCompletedNormally(f, v1);
868          assertEquals(0, a.get());
869      }}
870  
731
871      /**
872       * exceptionally action completes with function value on source
873       * exception
# Line 743 | Line 882 | public class CompletableFutureTest exten
882          if (!createIncomplete) f.completeExceptionally(ex);
883          final CompletableFuture<Integer> g = f.exceptionally
884              ((Throwable t) -> {
885 +                ExecutionMode.SYNC.checkExecutionMode();
886                  threadAssertSame(t, ex);
887                  a.getAndIncrement();
888                  return v1;
# Line 753 | Line 893 | public class CompletableFutureTest exten
893          assertEquals(1, a.get());
894      }}
895  
896 +    /**
897 +     * If an "exceptionally action" throws an exception, it completes
898 +     * exceptionally with that exception
899 +     */
900      public void testExceptionally_exceptionalCompletionActionFailed() {
901          for (boolean createIncomplete : new boolean[] { true, false })
758        for (Integer v1 : new Integer[] { 1, null })
902      {
903          final AtomicInteger a = new AtomicInteger(0);
904          final CFException ex1 = new CFException();
# Line 764 | Line 907 | public class CompletableFutureTest exten
907          if (!createIncomplete) f.completeExceptionally(ex1);
908          final CompletableFuture<Integer> g = f.exceptionally
909              ((Throwable t) -> {
910 +                ExecutionMode.SYNC.checkExecutionMode();
911                  threadAssertSame(t, ex1);
912                  a.getAndIncrement();
913                  throw ex2;
914              });
915          if (createIncomplete) f.completeExceptionally(ex1);
916  
917 <        checkCompletedWithWrappedCFException(g, ex2);
917 >        checkCompletedWithWrappedException(g, ex2);
918 >        checkCompletedExceptionally(f, ex1);
919 >        assertEquals(1, a.get());
920 >    }}
921 >
922 >    /**
923 >     * whenComplete action executes on normal completion, propagating
924 >     * source result.
925 >     */
926 >    public void testWhenComplete_normalCompletion() {
927 >        for (ExecutionMode m : ExecutionMode.values())
928 >        for (boolean createIncomplete : new boolean[] { true, false })
929 >        for (Integer v1 : new Integer[] { 1, null })
930 >    {
931 >        final AtomicInteger a = new AtomicInteger(0);
932 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
933 >        if (!createIncomplete) assertTrue(f.complete(v1));
934 >        final CompletableFuture<Integer> g = m.whenComplete
935 >            (f,
936 >             (Integer result, Throwable t) -> {
937 >                m.checkExecutionMode();
938 >                threadAssertSame(result, v1);
939 >                threadAssertNull(t);
940 >                a.getAndIncrement();
941 >            });
942 >        if (createIncomplete) assertTrue(f.complete(v1));
943 >
944 >        checkCompletedNormally(g, v1);
945 >        checkCompletedNormally(f, v1);
946 >        assertEquals(1, a.get());
947 >    }}
948 >
949 >    /**
950 >     * whenComplete action executes on exceptional completion, propagating
951 >     * source result.
952 >     */
953 >    public void testWhenComplete_exceptionalCompletion() {
954 >        for (ExecutionMode m : ExecutionMode.values())
955 >        for (boolean createIncomplete : new boolean[] { true, false })
956 >    {
957 >        final AtomicInteger a = new AtomicInteger(0);
958 >        final CFException ex = new CFException();
959 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
960 >        if (!createIncomplete) f.completeExceptionally(ex);
961 >        final CompletableFuture<Integer> g = m.whenComplete
962 >            (f,
963 >             (Integer result, Throwable t) -> {
964 >                m.checkExecutionMode();
965 >                threadAssertNull(result);
966 >                threadAssertSame(t, ex);
967 >                a.getAndIncrement();
968 >            });
969 >        if (createIncomplete) f.completeExceptionally(ex);
970 >
971 >        checkCompletedWithWrappedException(g, ex);
972 >        checkCompletedExceptionally(f, ex);
973 >        assertEquals(1, a.get());
974 >    }}
975 >
976 >    /**
977 >     * whenComplete action executes on cancelled source, propagating
978 >     * CancellationException.
979 >     */
980 >    public void testWhenComplete_sourceCancelled() {
981 >        for (ExecutionMode m : ExecutionMode.values())
982 >        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
983 >        for (boolean createIncomplete : new boolean[] { true, false })
984 >    {
985 >        final AtomicInteger a = new AtomicInteger(0);
986 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
987 >        if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
988 >        final CompletableFuture<Integer> g = m.whenComplete
989 >            (f,
990 >             (Integer result, Throwable t) -> {
991 >                m.checkExecutionMode();
992 >                threadAssertNull(result);
993 >                threadAssertTrue(t instanceof CancellationException);
994 >                a.getAndIncrement();
995 >            });
996 >        if (createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
997 >
998 >        checkCompletedWithWrappedCancellationException(g);
999 >        checkCancelled(f);
1000 >        assertEquals(1, a.get());
1001 >    }}
1002 >
1003 >    /**
1004 >     * If a whenComplete action throws an exception when triggered by
1005 >     * a normal completion, it completes exceptionally
1006 >     */
1007 >    public void testWhenComplete_sourceCompletedNormallyActionFailed() {
1008 >        for (boolean createIncomplete : new boolean[] { true, false })
1009 >        for (ExecutionMode m : ExecutionMode.values())
1010 >        for (Integer v1 : new Integer[] { 1, null })
1011 >    {
1012 >        final AtomicInteger a = new AtomicInteger(0);
1013 >        final CFException ex = new CFException();
1014 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1015 >        if (!createIncomplete) assertTrue(f.complete(v1));
1016 >        final CompletableFuture<Integer> g = m.whenComplete
1017 >            (f,
1018 >             (Integer result, Throwable t) -> {
1019 >                m.checkExecutionMode();
1020 >                threadAssertSame(result, v1);
1021 >                threadAssertNull(t);
1022 >                a.getAndIncrement();
1023 >                throw ex;
1024 >            });
1025 >        if (createIncomplete) assertTrue(f.complete(v1));
1026 >
1027 >        checkCompletedWithWrappedException(g, ex);
1028 >        checkCompletedNormally(f, v1);
1029 >        assertEquals(1, a.get());
1030 >    }}
1031 >
1032 >    /**
1033 >     * If a whenComplete action throws an exception when triggered by
1034 >     * a source completion that also throws an exception, the source
1035 >     * exception takes precedence (unlike handle)
1036 >     */
1037 >    public void testWhenComplete_sourceFailedActionFailed() {
1038 >        for (boolean createIncomplete : new boolean[] { true, false })
1039 >        for (ExecutionMode m : ExecutionMode.values())
1040 >    {
1041 >        final AtomicInteger a = new AtomicInteger(0);
1042 >        final CFException ex1 = new CFException();
1043 >        final CFException ex2 = new CFException();
1044 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1045 >
1046 >        if (!createIncomplete) f.completeExceptionally(ex1);
1047 >        final CompletableFuture<Integer> g = m.whenComplete
1048 >            (f,
1049 >             (Integer result, Throwable t) -> {
1050 >                m.checkExecutionMode();
1051 >                threadAssertSame(t, ex1);
1052 >                threadAssertNull(result);
1053 >                a.getAndIncrement();
1054 >                throw ex2;
1055 >            });
1056 >        if (createIncomplete) f.completeExceptionally(ex1);
1057 >
1058 >        checkCompletedWithWrappedException(g, ex1);
1059 >        checkCompletedExceptionally(f, ex1);
1060 >        if (testImplementationDetails) {
1061 >            assertEquals(1, ex1.getSuppressed().length);
1062 >            assertSame(ex2, ex1.getSuppressed()[0]);
1063 >        }
1064          assertEquals(1, a.get());
1065      }}
1066  
# Line 785 | Line 1075 | public class CompletableFutureTest exten
1075      {
1076          final CompletableFuture<Integer> f = new CompletableFuture<>();
1077          final AtomicInteger a = new AtomicInteger(0);
1078 <        if (!createIncomplete) f.complete(v1);
1078 >        if (!createIncomplete) assertTrue(f.complete(v1));
1079          final CompletableFuture<Integer> g = m.handle
1080              (f,
1081 <             (Integer x, Throwable t) -> {
1082 <                threadAssertSame(x, v1);
1081 >             (Integer result, Throwable t) -> {
1082 >                m.checkExecutionMode();
1083 >                threadAssertSame(result, v1);
1084                  threadAssertNull(t);
1085                  a.getAndIncrement();
1086                  return inc(v1);
1087              });
1088 <        if (createIncomplete) f.complete(v1);
1088 >        if (createIncomplete) assertTrue(f.complete(v1));
1089  
1090          checkCompletedNormally(g, inc(v1));
1091          checkCompletedNormally(f, v1);
# Line 816 | Line 1107 | public class CompletableFutureTest exten
1107          if (!createIncomplete) f.completeExceptionally(ex);
1108          final CompletableFuture<Integer> g = m.handle
1109              (f,
1110 <             (Integer x, Throwable t) -> {
1111 <                threadAssertNull(x);
1110 >             (Integer result, Throwable t) -> {
1111 >                m.checkExecutionMode();
1112 >                threadAssertNull(result);
1113                  threadAssertSame(t, ex);
1114                  a.getAndIncrement();
1115                  return v1;
# Line 825 | Line 1117 | public class CompletableFutureTest exten
1117          if (createIncomplete) f.completeExceptionally(ex);
1118  
1119          checkCompletedNormally(g, v1);
1120 <        checkCompletedWithWrappedCFException(f, ex);
1120 >        checkCompletedExceptionally(f, ex);
1121          assertEquals(1, a.get());
1122      }}
1123  
# Line 844 | Line 1136 | public class CompletableFutureTest exten
1136          if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
1137          final CompletableFuture<Integer> g = m.handle
1138              (f,
1139 <             (Integer x, Throwable t) -> {
1140 <                threadAssertNull(x);
1139 >             (Integer result, Throwable t) -> {
1140 >                m.checkExecutionMode();
1141 >                threadAssertNull(result);
1142                  threadAssertTrue(t instanceof CancellationException);
1143                  a.getAndIncrement();
1144                  return v1;
# Line 858 | Line 1151 | public class CompletableFutureTest exten
1151      }}
1152  
1153      /**
1154 <     * handle result completes exceptionally if action does
1154 >     * If a "handle action" throws an exception when triggered by
1155 >     * a normal completion, it completes exceptionally
1156       */
1157 <    public void testHandle_sourceFailedActionFailed() {
1157 >    public void testHandle_sourceCompletedNormallyActionFailed() {
1158          for (ExecutionMode m : ExecutionMode.values())
1159          for (boolean createIncomplete : new boolean[] { true, false })
1160 +        for (Integer v1 : new Integer[] { 1, null })
1161      {
1162          final CompletableFuture<Integer> f = new CompletableFuture<>();
1163          final AtomicInteger a = new AtomicInteger(0);
1164 <        final CFException ex1 = new CFException();
1165 <        final CFException ex2 = new CFException();
871 <        if (!createIncomplete) f.completeExceptionally(ex1);
1164 >        final CFException ex = new CFException();
1165 >        if (!createIncomplete) assertTrue(f.complete(v1));
1166          final CompletableFuture<Integer> g = m.handle
1167              (f,
1168 <             (Integer x, Throwable t) -> {
1169 <                threadAssertNull(x);
1170 <                threadAssertSame(ex1, t);
1168 >             (Integer result, Throwable t) -> {
1169 >                m.checkExecutionMode();
1170 >                threadAssertSame(result, v1);
1171 >                threadAssertNull(t);
1172                  a.getAndIncrement();
1173 <                throw ex2;
1173 >                throw ex;
1174              });
1175 <        if (createIncomplete) f.completeExceptionally(ex1);
1175 >        if (createIncomplete) assertTrue(f.complete(v1));
1176  
1177 <        checkCompletedWithWrappedCFException(g, ex2);
1178 <        checkCompletedWithWrappedCFException(f, ex1);
1177 >        checkCompletedWithWrappedException(g, ex);
1178 >        checkCompletedNormally(f, v1);
1179          assertEquals(1, a.get());
1180      }}
1181  
1182 <    public void testHandle_sourceCompletedNormallyActionFailed() {
1183 <        for (ExecutionMode m : ExecutionMode.values())
1182 >    /**
1183 >     * If a "handle action" throws an exception when triggered by
1184 >     * a source completion that also throws an exception, the action
1185 >     * exception takes precedence (unlike whenComplete)
1186 >     */
1187 >    public void testHandle_sourceFailedActionFailed() {
1188          for (boolean createIncomplete : new boolean[] { true, false })
1189 <        for (Integer v1 : new Integer[] { 1, null })
1189 >        for (ExecutionMode m : ExecutionMode.values())
1190      {
892        final CompletableFuture<Integer> f = new CompletableFuture<>();
1191          final AtomicInteger a = new AtomicInteger(0);
1192 <        final CFException ex = new CFException();
1193 <        if (!createIncomplete) f.complete(v1);
1192 >        final CFException ex1 = new CFException();
1193 >        final CFException ex2 = new CFException();
1194 >        final CompletableFuture<Integer> f = new CompletableFuture<>();
1195 >
1196 >        if (!createIncomplete) f.completeExceptionally(ex1);
1197          final CompletableFuture<Integer> g = m.handle
1198              (f,
1199 <             (Integer x, Throwable t) -> {
1200 <                threadAssertSame(x, v1);
1201 <                threadAssertNull(t);
1199 >             (Integer result, Throwable t) -> {
1200 >                m.checkExecutionMode();
1201 >                threadAssertNull(result);
1202 >                threadAssertSame(ex1, t);
1203                  a.getAndIncrement();
1204 <                throw ex;
1204 >                throw ex2;
1205              });
1206 <        if (createIncomplete) f.complete(v1);
1206 >        if (createIncomplete) f.completeExceptionally(ex1);
1207  
1208 <        checkCompletedWithWrappedCFException(g, ex);
1209 <        checkCompletedNormally(f, v1);
1208 >        checkCompletedWithWrappedException(g, ex2);
1209 >        checkCompletedExceptionally(f, ex1);
1210          assertEquals(1, a.get());
1211      }}
1212  
1213      /**
1214       * runAsync completes after running Runnable
1215       */
1216 <    public void testRunAsync() {
1217 <        Noop r = new Noop(ExecutionMode.ASYNC);
1218 <        CompletableFuture<Void> f = CompletableFuture.runAsync(r);
1219 <        assertNull(f.join());
1220 <        assertEquals(1, r.invocationCount);
1221 <        checkCompletedNormally(f, null);
1222 <    }
1223 <
1224 <    /**
923 <     * runAsync with executor completes after running Runnable
924 <     */
925 <    public void testRunAsync2() {
926 <        Noop r = new Noop(ExecutionMode.EXECUTOR);
927 <        ThreadExecutor exec = new ThreadExecutor();
928 <        CompletableFuture<Void> f = CompletableFuture.runAsync(r, exec);
1216 >    public void testRunAsync_normalCompletion() {
1217 >        ExecutionMode[] executionModes = {
1218 >            ExecutionMode.ASYNC,
1219 >            ExecutionMode.EXECUTOR,
1220 >        };
1221 >        for (ExecutionMode m : executionModes)
1222 >    {
1223 >        final Noop r = new Noop(m);
1224 >        final CompletableFuture<Void> f = m.runAsync(r);
1225          assertNull(f.join());
930        assertEquals(1, r.invocationCount);
1226          checkCompletedNormally(f, null);
1227 <        assertEquals(1, exec.count.get());
1228 <    }
1227 >        r.assertInvoked();
1228 >    }}
1229  
1230      /**
1231       * failing runAsync completes exceptionally after running Runnable
1232       */
1233 <    public void testRunAsync3() {
1234 <        FailingRunnable r = new FailingRunnable();
1235 <        CompletableFuture<Void> f = CompletableFuture.runAsync(r);
1236 <        checkCompletedWithWrappedCFException(f);
1237 <        assertEquals(1, r.invocationCount);
1238 <    }
1233 >    public void testRunAsync_exceptionalCompletion() {
1234 >        ExecutionMode[] executionModes = {
1235 >            ExecutionMode.ASYNC,
1236 >            ExecutionMode.EXECUTOR,
1237 >        };
1238 >        for (ExecutionMode m : executionModes)
1239 >    {
1240 >        final FailingRunnable r = new FailingRunnable(m);
1241 >        final CompletableFuture<Void> f = m.runAsync(r);
1242 >        checkCompletedWithWrappedException(f, r.ex);
1243 >        r.assertInvoked();
1244 >    }}
1245  
1246 <    /**
1247 <     * supplyAsync completes with result of supplier
1248 <     */
1249 <    public void testSupplyAsync() {
1250 <        CompletableFuture<Integer> f;
1251 <        f = CompletableFuture.supplyAsync(supplyOne);
1252 <        assertEquals(f.join(), one);
1253 <        checkCompletedNormally(f, one);
1246 >    public void testRunAsync_rejectingExecutor() {
1247 >        CountingRejectingExecutor e = new CountingRejectingExecutor();
1248 >        try {
1249 >            CompletableFuture.runAsync(() -> {}, e);
1250 >            shouldThrow();
1251 >        } catch (Throwable t) {
1252 >            assertSame(e.ex, t);
1253 >        }
1254 >
1255 >        assertEquals(1, e.count.get());
1256      }
1257  
1258      /**
1259 <     * supplyAsync with executor completes with result of supplier
1259 >     * supplyAsync completes with result of supplier
1260       */
1261 <    public void testSupplyAsync2() {
1262 <        CompletableFuture<Integer> f;
1263 <        f = CompletableFuture.supplyAsync(supplyOne, new ThreadExecutor());
1264 <        assertEquals(f.join(), one);
1265 <        checkCompletedNormally(f, one);
1266 <    }
1261 >    public void testSupplyAsync_normalCompletion() {
1262 >        ExecutionMode[] executionModes = {
1263 >            ExecutionMode.ASYNC,
1264 >            ExecutionMode.EXECUTOR,
1265 >        };
1266 >        for (ExecutionMode m : executionModes)
1267 >        for (Integer v1 : new Integer[] { 1, null })
1268 >    {
1269 >        final IntegerSupplier r = new IntegerSupplier(m, v1);
1270 >        final CompletableFuture<Integer> f = m.supplyAsync(r);
1271 >        assertSame(v1, f.join());
1272 >        checkCompletedNormally(f, v1);
1273 >        r.assertInvoked();
1274 >    }}
1275  
1276      /**
1277       * Failing supplyAsync completes exceptionally
1278       */
1279 <    public void testSupplyAsync3() {
1280 <        FailingSupplier r = new FailingSupplier();
1281 <        CompletableFuture<Integer> f = CompletableFuture.supplyAsync(r);
1282 <        checkCompletedWithWrappedCFException(f);
1283 <        assertEquals(1, r.invocationCount);
1279 >    public void testSupplyAsync_exceptionalCompletion() {
1280 >        ExecutionMode[] executionModes = {
1281 >            ExecutionMode.ASYNC,
1282 >            ExecutionMode.EXECUTOR,
1283 >        };
1284 >        for (ExecutionMode m : executionModes)
1285 >    {
1286 >        FailingSupplier r = new FailingSupplier(m);
1287 >        CompletableFuture<Integer> f = m.supplyAsync(r);
1288 >        checkCompletedWithWrappedException(f, r.ex);
1289 >        r.assertInvoked();
1290 >    }}
1291 >
1292 >    public void testSupplyAsync_rejectingExecutor() {
1293 >        CountingRejectingExecutor e = new CountingRejectingExecutor();
1294 >        try {
1295 >            CompletableFuture.supplyAsync(() -> null, e);
1296 >            shouldThrow();
1297 >        } catch (Throwable t) {
1298 >            assertSame(e.ex, t);
1299 >        }
1300 >
1301 >        assertEquals(1, e.count.get());
1302      }
1303  
1304      // seq completion methods
# Line 979 | Line 1308 | public class CompletableFutureTest exten
1308       */
1309      public void testThenRun_normalCompletion() {
1310          for (ExecutionMode m : ExecutionMode.values())
982        for (boolean createIncomplete : new boolean[] { true, false })
1311          for (Integer v1 : new Integer[] { 1, null })
1312      {
1313          final CompletableFuture<Integer> f = new CompletableFuture<>();
1314 <        final Noop r = new Noop(m);
1315 <        if (!createIncomplete) f.complete(v1);
988 <        final CompletableFuture<Void> g = m.thenRun(f, r);
989 <        if (createIncomplete) {
990 <            checkIncomplete(g);
991 <            f.complete(v1);
992 <        }
1314 >        final Noop[] rs = new Noop[6];
1315 >        for (int i = 0; i < rs.length; i++) rs[i] = new Noop(m);
1316  
1317 <        checkCompletedNormally(g, null);
1317 >        final CompletableFuture<Void> h0 = m.thenRun(f, rs[0]);
1318 >        final CompletableFuture<Void> h1 = m.runAfterBoth(f, f, rs[1]);
1319 >        final CompletableFuture<Void> h2 = m.runAfterEither(f, f, rs[2]);
1320 >        checkIncomplete(h0);
1321 >        checkIncomplete(h1);
1322 >        checkIncomplete(h2);
1323 >        assertTrue(f.complete(v1));
1324 >        final CompletableFuture<Void> h3 = m.thenRun(f, rs[3]);
1325 >        final CompletableFuture<Void> h4 = m.runAfterBoth(f, f, rs[4]);
1326 >        final CompletableFuture<Void> h5 = m.runAfterEither(f, f, rs[5]);
1327 >
1328 >        checkCompletedNormally(h0, null);
1329 >        checkCompletedNormally(h1, null);
1330 >        checkCompletedNormally(h2, null);
1331 >        checkCompletedNormally(h3, null);
1332 >        checkCompletedNormally(h4, null);
1333 >        checkCompletedNormally(h5, null);
1334          checkCompletedNormally(f, v1);
1335 <        assertEquals(1, r.invocationCount);
1335 >        for (Noop r : rs) r.assertInvoked();
1336      }}
1337  
1338      /**
# Line 1002 | Line 1341 | public class CompletableFutureTest exten
1341       */
1342      public void testThenRun_exceptionalCompletion() {
1343          for (ExecutionMode m : ExecutionMode.values())
1005        for (boolean createIncomplete : new boolean[] { true, false })
1344      {
1345          final CFException ex = new CFException();
1346          final CompletableFuture<Integer> f = new CompletableFuture<>();
1347 <        final Noop r = new Noop(m);
1348 <        if (!createIncomplete) f.completeExceptionally(ex);
1011 <        final CompletableFuture<Void> g = m.thenRun(f, r);
1012 <        if (createIncomplete) {
1013 <            checkIncomplete(g);
1014 <            f.completeExceptionally(ex);
1015 <        }
1347 >        final Noop[] rs = new Noop[6];
1348 >        for (int i = 0; i < rs.length; i++) rs[i] = new Noop(m);
1349  
1350 <        checkCompletedWithWrappedCFException(g, ex);
1351 <        checkCompletedWithWrappedCFException(f, ex);
1352 <        assertEquals(0, r.invocationCount);
1350 >        final CompletableFuture<Void> h0 = m.thenRun(f, rs[0]);
1351 >        final CompletableFuture<Void> h1 = m.runAfterBoth(f, f, rs[1]);
1352 >        final CompletableFuture<Void> h2 = m.runAfterEither(f, f, rs[2]);
1353 >        checkIncomplete(h0);
1354 >        checkIncomplete(h1);
1355 >        checkIncomplete(h2);
1356 >        assertTrue(f.completeExceptionally(ex));
1357 >        final CompletableFuture<Void> h3 = m.thenRun(f, rs[3]);
1358 >        final CompletableFuture<Void> h4 = m.runAfterBoth(f, f, rs[4]);
1359 >        final CompletableFuture<Void> h5 = m.runAfterEither(f, f, rs[5]);
1360 >
1361 >        checkCompletedWithWrappedException(h0, ex);
1362 >        checkCompletedWithWrappedException(h1, ex);
1363 >        checkCompletedWithWrappedException(h2, ex);
1364 >        checkCompletedWithWrappedException(h3, ex);
1365 >        checkCompletedWithWrappedException(h4, ex);
1366 >        checkCompletedWithWrappedException(h5, ex);
1367 >        checkCompletedExceptionally(f, ex);
1368 >        for (Noop r : rs) r.assertNotInvoked();
1369      }}
1370  
1371      /**
# Line 1024 | Line 1373 | public class CompletableFutureTest exten
1373       */
1374      public void testThenRun_sourceCancelled() {
1375          for (ExecutionMode m : ExecutionMode.values())
1027        for (boolean createIncomplete : new boolean[] { true, false })
1376          for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1377      {
1378          final CompletableFuture<Integer> f = new CompletableFuture<>();
1379 <        final Noop r = new Noop(m);
1380 <        if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
1033 <        final CompletableFuture<Void> g = f.thenRun(r);
1034 <        if (createIncomplete) {
1035 <            checkIncomplete(g);
1036 <            assertTrue(f.cancel(mayInterruptIfRunning));
1037 <        }
1379 >        final Noop[] rs = new Noop[6];
1380 >        for (int i = 0; i < rs.length; i++) rs[i] = new Noop(m);
1381  
1382 <        checkCompletedWithWrappedCancellationException(g);
1382 >        final CompletableFuture<Void> h0 = m.thenRun(f, rs[0]);
1383 >        final CompletableFuture<Void> h1 = m.runAfterBoth(f, f, rs[1]);
1384 >        final CompletableFuture<Void> h2 = m.runAfterEither(f, f, rs[2]);
1385 >        checkIncomplete(h0);
1386 >        checkIncomplete(h1);
1387 >        checkIncomplete(h2);
1388 >        assertTrue(f.cancel(mayInterruptIfRunning));
1389 >        final CompletableFuture<Void> h3 = m.thenRun(f, rs[3]);
1390 >        final CompletableFuture<Void> h4 = m.runAfterBoth(f, f, rs[4]);
1391 >        final CompletableFuture<Void> h5 = m.runAfterEither(f, f, rs[5]);
1392 >
1393 >        checkCompletedWithWrappedCancellationException(h0);
1394 >        checkCompletedWithWrappedCancellationException(h1);
1395 >        checkCompletedWithWrappedCancellationException(h2);
1396 >        checkCompletedWithWrappedCancellationException(h3);
1397 >        checkCompletedWithWrappedCancellationException(h4);
1398 >        checkCompletedWithWrappedCancellationException(h5);
1399          checkCancelled(f);
1400 <        assertEquals(0, r.invocationCount);
1400 >        for (Noop r : rs) r.assertNotInvoked();
1401      }}
1402  
1403      /**
# Line 1046 | Line 1405 | public class CompletableFutureTest exten
1405       */
1406      public void testThenRun_actionFailed() {
1407          for (ExecutionMode m : ExecutionMode.values())
1049        for (boolean createIncomplete : new boolean[] { true, false })
1408          for (Integer v1 : new Integer[] { 1, null })
1409      {
1410          final CompletableFuture<Integer> f = new CompletableFuture<>();
1411 <        final FailingRunnable r = new FailingRunnable();
1412 <        if (!createIncomplete) f.complete(v1);
1055 <        final CompletableFuture<Void> g = f.thenRun(r);
1056 <        if (createIncomplete) {
1057 <            checkIncomplete(g);
1058 <            f.complete(v1);
1059 <        }
1411 >        final FailingRunnable[] rs = new FailingRunnable[6];
1412 >        for (int i = 0; i < rs.length; i++) rs[i] = new FailingRunnable(m);
1413  
1414 <        checkCompletedWithWrappedCFException(g);
1414 >        final CompletableFuture<Void> h0 = m.thenRun(f, rs[0]);
1415 >        final CompletableFuture<Void> h1 = m.runAfterBoth(f, f, rs[1]);
1416 >        final CompletableFuture<Void> h2 = m.runAfterEither(f, f, rs[2]);
1417 >        assertTrue(f.complete(v1));
1418 >        final CompletableFuture<Void> h3 = m.thenRun(f, rs[3]);
1419 >        final CompletableFuture<Void> h4 = m.runAfterBoth(f, f, rs[4]);
1420 >        final CompletableFuture<Void> h5 = m.runAfterEither(f, f, rs[5]);
1421 >
1422 >        checkCompletedWithWrappedException(h0, rs[0].ex);
1423 >        checkCompletedWithWrappedException(h1, rs[1].ex);
1424 >        checkCompletedWithWrappedException(h2, rs[2].ex);
1425 >        checkCompletedWithWrappedException(h3, rs[3].ex);
1426 >        checkCompletedWithWrappedException(h4, rs[4].ex);
1427 >        checkCompletedWithWrappedException(h5, rs[5].ex);
1428          checkCompletedNormally(f, v1);
1429      }}
1430  
# Line 1067 | Line 1433 | public class CompletableFutureTest exten
1433       */
1434      public void testThenApply_normalCompletion() {
1435          for (ExecutionMode m : ExecutionMode.values())
1070        for (boolean createIncomplete : new boolean[] { true, false })
1436          for (Integer v1 : new Integer[] { 1, null })
1437      {
1438          final CompletableFuture<Integer> f = new CompletableFuture<>();
1439 <        final IncFunction r = new IncFunction();
1440 <        if (!createIncomplete) f.complete(v1);
1076 <        final CompletableFuture<Integer> g = m.thenApply(f, r);
1077 <        if (createIncomplete) {
1078 <            checkIncomplete(g);
1079 <            f.complete(v1);
1080 <        }
1439 >        final IncFunction[] rs = new IncFunction[4];
1440 >        for (int i = 0; i < rs.length; i++) rs[i] = new IncFunction(m);
1441  
1442 <        checkCompletedNormally(g, inc(v1));
1442 >        final CompletableFuture<Integer> h0 = m.thenApply(f, rs[0]);
1443 >        final CompletableFuture<Integer> h1 = m.applyToEither(f, f, rs[1]);
1444 >        checkIncomplete(h0);
1445 >        checkIncomplete(h1);
1446 >        assertTrue(f.complete(v1));
1447 >        final CompletableFuture<Integer> h2 = m.thenApply(f, rs[2]);
1448 >        final CompletableFuture<Integer> h3 = m.applyToEither(f, f, rs[3]);
1449 >
1450 >        checkCompletedNormally(h0, inc(v1));
1451 >        checkCompletedNormally(h1, inc(v1));
1452 >        checkCompletedNormally(h2, inc(v1));
1453 >        checkCompletedNormally(h3, inc(v1));
1454          checkCompletedNormally(f, v1);
1455 <        assertEquals(1, r.invocationCount);
1455 >        for (IncFunction r : rs) r.assertValue(inc(v1));
1456      }}
1457  
1458      /**
# Line 1090 | Line 1461 | public class CompletableFutureTest exten
1461       */
1462      public void testThenApply_exceptionalCompletion() {
1463          for (ExecutionMode m : ExecutionMode.values())
1093        for (boolean createIncomplete : new boolean[] { true, false })
1464      {
1465          final CFException ex = new CFException();
1466          final CompletableFuture<Integer> f = new CompletableFuture<>();
1467 <        final IncFunction r = new IncFunction();
1468 <        if (!createIncomplete) f.completeExceptionally(ex);
1099 <        final CompletableFuture<Integer> g = m.thenApply(f, r);
1100 <        if (createIncomplete) {
1101 <            checkIncomplete(g);
1102 <            f.completeExceptionally(ex);
1103 <        }
1467 >        final IncFunction[] rs = new IncFunction[4];
1468 >        for (int i = 0; i < rs.length; i++) rs[i] = new IncFunction(m);
1469  
1470 <        checkCompletedWithWrappedCFException(g, ex);
1471 <        checkCompletedWithWrappedCFException(f, ex);
1472 <        assertEquals(0, r.invocationCount);
1470 >        final CompletableFuture<Integer> h0 = m.thenApply(f, rs[0]);
1471 >        final CompletableFuture<Integer> h1 = m.applyToEither(f, f, rs[1]);
1472 >        assertTrue(f.completeExceptionally(ex));
1473 >        final CompletableFuture<Integer> h2 = m.thenApply(f, rs[2]);
1474 >        final CompletableFuture<Integer> h3 = m.applyToEither(f, f, rs[3]);
1475 >
1476 >        checkCompletedWithWrappedException(h0, ex);
1477 >        checkCompletedWithWrappedException(h1, ex);
1478 >        checkCompletedWithWrappedException(h2, ex);
1479 >        checkCompletedWithWrappedException(h3, ex);
1480 >        checkCompletedExceptionally(f, ex);
1481 >        for (IncFunction r : rs) r.assertNotInvoked();
1482      }}
1483  
1484      /**
# Line 1112 | Line 1486 | public class CompletableFutureTest exten
1486       */
1487      public void testThenApply_sourceCancelled() {
1488          for (ExecutionMode m : ExecutionMode.values())
1115        for (boolean createIncomplete : new boolean[] { true, false })
1489          for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1490      {
1491          final CompletableFuture<Integer> f = new CompletableFuture<>();
1492 <        final IncFunction r = new IncFunction();
1493 <        if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
1121 <        final CompletableFuture<Integer> g = f.thenApply(r);
1122 <        if (createIncomplete) {
1123 <            checkIncomplete(g);
1124 <            assertTrue(f.cancel(mayInterruptIfRunning));
1125 <        }
1492 >        final IncFunction[] rs = new IncFunction[4];
1493 >        for (int i = 0; i < rs.length; i++) rs[i] = new IncFunction(m);
1494  
1495 <        checkCompletedWithWrappedCancellationException(g);
1495 >        final CompletableFuture<Integer> h0 = m.thenApply(f, rs[0]);
1496 >        final CompletableFuture<Integer> h1 = m.applyToEither(f, f, rs[1]);
1497 >        assertTrue(f.cancel(mayInterruptIfRunning));
1498 >        final CompletableFuture<Integer> h2 = m.thenApply(f, rs[2]);
1499 >        final CompletableFuture<Integer> h3 = m.applyToEither(f, f, rs[3]);
1500 >
1501 >        checkCompletedWithWrappedCancellationException(h0);
1502 >        checkCompletedWithWrappedCancellationException(h1);
1503 >        checkCompletedWithWrappedCancellationException(h2);
1504 >        checkCompletedWithWrappedCancellationException(h3);
1505          checkCancelled(f);
1506 <        assertEquals(0, r.invocationCount);
1506 >        for (IncFunction r : rs) r.assertNotInvoked();
1507      }}
1508  
1509      /**
# Line 1134 | Line 1511 | public class CompletableFutureTest exten
1511       */
1512      public void testThenApply_actionFailed() {
1513          for (ExecutionMode m : ExecutionMode.values())
1137        for (boolean createIncomplete : new boolean[] { true, false })
1514          for (Integer v1 : new Integer[] { 1, null })
1515      {
1516          final CompletableFuture<Integer> f = new CompletableFuture<>();
1517 <        final FailingFunction r = new FailingFunction();
1518 <        if (!createIncomplete) f.complete(v1);
1143 <        final CompletableFuture<Integer> g = f.thenApply(r);
1144 <        if (createIncomplete) {
1145 <            checkIncomplete(g);
1146 <            f.complete(v1);
1147 <        }
1517 >        final FailingFunction[] rs = new FailingFunction[4];
1518 >        for (int i = 0; i < rs.length; i++) rs[i] = new FailingFunction(m);
1519  
1520 <        checkCompletedWithWrappedCFException(g);
1520 >        final CompletableFuture<Integer> h0 = m.thenApply(f, rs[0]);
1521 >        final CompletableFuture<Integer> h1 = m.applyToEither(f, f, rs[1]);
1522 >        assertTrue(f.complete(v1));
1523 >        final CompletableFuture<Integer> h2 = m.thenApply(f, rs[2]);
1524 >        final CompletableFuture<Integer> h3 = m.applyToEither(f, f, rs[3]);
1525 >
1526 >        checkCompletedWithWrappedException(h0, rs[0].ex);
1527 >        checkCompletedWithWrappedException(h1, rs[1].ex);
1528 >        checkCompletedWithWrappedException(h2, rs[2].ex);
1529 >        checkCompletedWithWrappedException(h3, rs[3].ex);
1530          checkCompletedNormally(f, v1);
1531      }}
1532  
# Line 1155 | Line 1535 | public class CompletableFutureTest exten
1535       */
1536      public void testThenAccept_normalCompletion() {
1537          for (ExecutionMode m : ExecutionMode.values())
1158        for (boolean createIncomplete : new boolean[] { true, false })
1538          for (Integer v1 : new Integer[] { 1, null })
1539      {
1540          final CompletableFuture<Integer> f = new CompletableFuture<>();
1541 <        final IncAction r = new IncAction();
1542 <        if (!createIncomplete) f.complete(v1);
1164 <        final CompletableFuture<Void> g = m.thenAccept(f, r);
1165 <        if (createIncomplete) {
1166 <            checkIncomplete(g);
1167 <            f.complete(v1);
1168 <        }
1541 >        final NoopConsumer[] rs = new NoopConsumer[4];
1542 >        for (int i = 0; i < rs.length; i++) rs[i] = new NoopConsumer(m);
1543  
1544 <        checkCompletedNormally(g, null);
1544 >        final CompletableFuture<Void> h0 = m.thenAccept(f, rs[0]);
1545 >        final CompletableFuture<Void> h1 = m.acceptEither(f, f, rs[1]);
1546 >        checkIncomplete(h0);
1547 >        checkIncomplete(h1);
1548 >        assertTrue(f.complete(v1));
1549 >        final CompletableFuture<Void> h2 = m.thenAccept(f, rs[2]);
1550 >        final CompletableFuture<Void> h3 = m.acceptEither(f, f, rs[3]);
1551 >
1552 >        checkCompletedNormally(h0, null);
1553 >        checkCompletedNormally(h1, null);
1554 >        checkCompletedNormally(h2, null);
1555 >        checkCompletedNormally(h3, null);
1556          checkCompletedNormally(f, v1);
1557 <        assertEquals(1, r.invocationCount);
1173 <        assertEquals(inc(v1), r.value);
1557 >        for (NoopConsumer r : rs) r.assertValue(v1);
1558      }}
1559  
1560      /**
# Line 1179 | Line 1563 | public class CompletableFutureTest exten
1563       */
1564      public void testThenAccept_exceptionalCompletion() {
1565          for (ExecutionMode m : ExecutionMode.values())
1182        for (boolean createIncomplete : new boolean[] { true, false })
1566      {
1567          final CFException ex = new CFException();
1568          final CompletableFuture<Integer> f = new CompletableFuture<>();
1569 <        final IncAction r = new IncAction();
1570 <        if (!createIncomplete) f.completeExceptionally(ex);
1188 <        final CompletableFuture<Void> g = m.thenAccept(f, r);
1189 <        if (createIncomplete) {
1190 <            checkIncomplete(g);
1191 <            f.completeExceptionally(ex);
1192 <        }
1569 >        final NoopConsumer[] rs = new NoopConsumer[4];
1570 >        for (int i = 0; i < rs.length; i++) rs[i] = new NoopConsumer(m);
1571  
1572 <        checkCompletedWithWrappedCFException(g, ex);
1573 <        checkCompletedWithWrappedCFException(f, ex);
1574 <        assertEquals(0, r.invocationCount);
1572 >        final CompletableFuture<Void> h0 = m.thenAccept(f, rs[0]);
1573 >        final CompletableFuture<Void> h1 = m.acceptEither(f, f, rs[1]);
1574 >        assertTrue(f.completeExceptionally(ex));
1575 >        final CompletableFuture<Void> h2 = m.thenAccept(f, rs[2]);
1576 >        final CompletableFuture<Void> h3 = m.acceptEither(f, f, rs[3]);
1577 >
1578 >        checkCompletedWithWrappedException(h0, ex);
1579 >        checkCompletedWithWrappedException(h1, ex);
1580 >        checkCompletedWithWrappedException(h2, ex);
1581 >        checkCompletedWithWrappedException(h3, ex);
1582 >        checkCompletedExceptionally(f, ex);
1583 >        for (NoopConsumer r : rs) r.assertNotInvoked();
1584      }}
1585  
1586      /**
1587 <     * thenAccept result completes exceptionally if action does
1587 >     * thenAccept result completes exceptionally if source cancelled
1588       */
1589 <    public void testThenAccept_actionFailed() {
1589 >    public void testThenAccept_sourceCancelled() {
1590          for (ExecutionMode m : ExecutionMode.values())
1591 <        for (boolean createIncomplete : new boolean[] { true, false })
1205 <        for (Integer v1 : new Integer[] { 1, null })
1591 >        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1592      {
1593          final CompletableFuture<Integer> f = new CompletableFuture<>();
1594 <        final FailingConsumer r = new FailingConsumer();
1595 <        if (!createIncomplete) f.complete(v1);
1210 <        final CompletableFuture<Void> g = f.thenAccept(r);
1211 <        if (createIncomplete) {
1212 <            checkIncomplete(g);
1213 <            f.complete(v1);
1214 <        }
1594 >        final NoopConsumer[] rs = new NoopConsumer[4];
1595 >        for (int i = 0; i < rs.length; i++) rs[i] = new NoopConsumer(m);
1596  
1597 <        checkCompletedWithWrappedCFException(g);
1598 <        checkCompletedNormally(f, v1);
1597 >        final CompletableFuture<Void> h0 = m.thenAccept(f, rs[0]);
1598 >        final CompletableFuture<Void> h1 = m.acceptEither(f, f, rs[1]);
1599 >        assertTrue(f.cancel(mayInterruptIfRunning));
1600 >        final CompletableFuture<Void> h2 = m.thenAccept(f, rs[2]);
1601 >        final CompletableFuture<Void> h3 = m.acceptEither(f, f, rs[3]);
1602 >
1603 >        checkCompletedWithWrappedCancellationException(h0);
1604 >        checkCompletedWithWrappedCancellationException(h1);
1605 >        checkCompletedWithWrappedCancellationException(h2);
1606 >        checkCompletedWithWrappedCancellationException(h3);
1607 >        checkCancelled(f);
1608 >        for (NoopConsumer r : rs) r.assertNotInvoked();
1609      }}
1610  
1611      /**
1612 <     * thenAccept result completes exceptionally if source cancelled
1612 >     * thenAccept result completes exceptionally if action does
1613       */
1614 <    public void testThenAccept_sourceCancelled() {
1614 >    public void testThenAccept_actionFailed() {
1615          for (ExecutionMode m : ExecutionMode.values())
1616 <        for (boolean createIncomplete : new boolean[] { true, false })
1226 <        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1616 >        for (Integer v1 : new Integer[] { 1, null })
1617      {
1618          final CompletableFuture<Integer> f = new CompletableFuture<>();
1619 <        final IncAction r = new IncAction();
1620 <        if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
1231 <        final CompletableFuture<Void> g = f.thenAccept(r);
1232 <        if (createIncomplete) {
1233 <            checkIncomplete(g);
1234 <            assertTrue(f.cancel(mayInterruptIfRunning));
1235 <        }
1619 >        final FailingConsumer[] rs = new FailingConsumer[4];
1620 >        for (int i = 0; i < rs.length; i++) rs[i] = new FailingConsumer(m);
1621  
1622 <        checkCompletedWithWrappedCancellationException(g);
1623 <        checkCancelled(f);
1624 <        assertEquals(0, r.invocationCount);
1622 >        final CompletableFuture<Void> h0 = m.thenAccept(f, rs[0]);
1623 >        final CompletableFuture<Void> h1 = m.acceptEither(f, f, rs[1]);
1624 >        assertTrue(f.complete(v1));
1625 >        final CompletableFuture<Void> h2 = m.thenAccept(f, rs[2]);
1626 >        final CompletableFuture<Void> h3 = m.acceptEither(f, f, rs[3]);
1627 >
1628 >        checkCompletedWithWrappedException(h0, rs[0].ex);
1629 >        checkCompletedWithWrappedException(h1, rs[1].ex);
1630 >        checkCompletedWithWrappedException(h2, rs[2].ex);
1631 >        checkCompletedWithWrappedException(h3, rs[3].ex);
1632 >        checkCompletedNormally(f, v1);
1633      }}
1634  
1635      /**
# Line 1245 | Line 1638 | public class CompletableFutureTest exten
1638       */
1639      public void testThenCombine_normalCompletion() {
1640          for (ExecutionMode m : ExecutionMode.values())
1248        for (boolean createIncomplete : new boolean[] { true, false })
1641          for (boolean fFirst : new boolean[] { true, false })
1642          for (Integer v1 : new Integer[] { 1, null })
1643          for (Integer v2 : new Integer[] { 2, null })
1644      {
1645          final CompletableFuture<Integer> f = new CompletableFuture<>();
1646          final CompletableFuture<Integer> g = new CompletableFuture<>();
1647 <        final SubtractFunction r = new SubtractFunction();
1647 >        final SubtractFunction[] rs = new SubtractFunction[6];
1648 >        for (int i = 0; i < rs.length; i++) rs[i] = new SubtractFunction(m);
1649  
1650 <        if (fFirst) f.complete(v1); else g.complete(v2);
1651 <        if (!createIncomplete)
1652 <            if (!fFirst) f.complete(v1); else g.complete(v2);
1653 <        final CompletableFuture<Integer> h = m.thenCombine(f, g, r);
1654 <        if (createIncomplete) {
1655 <            checkIncomplete(h);
1656 <            assertEquals(0, r.invocationCount);
1657 <            if (!fFirst) f.complete(v1); else g.complete(v2);
1658 <        }
1650 >        final CompletableFuture<Integer> fst =  fFirst ? f : g;
1651 >        final CompletableFuture<Integer> snd = !fFirst ? f : g;
1652 >        final Integer w1 =  fFirst ? v1 : v2;
1653 >        final Integer w2 = !fFirst ? v1 : v2;
1654 >
1655 >        final CompletableFuture<Integer> h0 = m.thenCombine(f, g, rs[0]);
1656 >        final CompletableFuture<Integer> h1 = m.thenCombine(fst, fst, rs[1]);
1657 >        assertTrue(fst.complete(w1));
1658 >        final CompletableFuture<Integer> h2 = m.thenCombine(f, g, rs[2]);
1659 >        final CompletableFuture<Integer> h3 = m.thenCombine(fst, fst, rs[3]);
1660 >        checkIncomplete(h0); rs[0].assertNotInvoked();
1661 >        checkIncomplete(h2); rs[2].assertNotInvoked();
1662 >        checkCompletedNormally(h1, subtract(w1, w1));
1663 >        checkCompletedNormally(h3, subtract(w1, w1));
1664 >        rs[1].assertValue(subtract(w1, w1));
1665 >        rs[3].assertValue(subtract(w1, w1));
1666 >        assertTrue(snd.complete(w2));
1667 >        final CompletableFuture<Integer> h4 = m.thenCombine(f, g, rs[4]);
1668 >
1669 >        checkCompletedNormally(h0, subtract(v1, v2));
1670 >        checkCompletedNormally(h2, subtract(v1, v2));
1671 >        checkCompletedNormally(h4, subtract(v1, v2));
1672 >        rs[0].assertValue(subtract(v1, v2));
1673 >        rs[2].assertValue(subtract(v1, v2));
1674 >        rs[4].assertValue(subtract(v1, v2));
1675  
1267        checkCompletedNormally(h, subtract(v1, v2));
1676          checkCompletedNormally(f, v1);
1677          checkCompletedNormally(g, v2);
1270        assertEquals(1, r.invocationCount);
1678      }}
1679  
1680      /**
1681       * thenCombine result completes exceptionally after exceptional
1682       * completion of either source
1683       */
1684 <    public void testThenCombine_exceptionalCompletion() {
1684 >    public void testThenCombine_exceptionalCompletion() throws Throwable {
1685          for (ExecutionMode m : ExecutionMode.values())
1279        for (boolean createIncomplete : new boolean[] { true, false })
1686          for (boolean fFirst : new boolean[] { true, false })
1687 +        for (boolean failFirst : new boolean[] { true, false })
1688          for (Integer v1 : new Integer[] { 1, null })
1689      {
1690          final CompletableFuture<Integer> f = new CompletableFuture<>();
1691          final CompletableFuture<Integer> g = new CompletableFuture<>();
1692          final CFException ex = new CFException();
1693 <        final SubtractFunction r = new SubtractFunction();
1694 <
1695 <        (fFirst ? f : g).complete(v1);
1696 <        if (!createIncomplete)
1697 <            (!fFirst ? f : g).completeExceptionally(ex);
1698 <        final CompletableFuture<Integer> h = m.thenCombine(f, g, r);
1699 <        if (createIncomplete) {
1700 <            checkIncomplete(h);
1701 <            (!fFirst ? f : g).completeExceptionally(ex);
1702 <        }
1703 <
1704 <        checkCompletedWithWrappedCFException(h, ex);
1705 <        assertEquals(0, r.invocationCount);
1706 <        checkCompletedNormally(fFirst ? f : g, v1);
1707 <        checkCompletedWithWrappedCFException(!fFirst ? f : g, ex);
1693 >        final SubtractFunction r1 = new SubtractFunction(m);
1694 >        final SubtractFunction r2 = new SubtractFunction(m);
1695 >        final SubtractFunction r3 = new SubtractFunction(m);
1696 >
1697 >        final CompletableFuture<Integer> fst =  fFirst ? f : g;
1698 >        final CompletableFuture<Integer> snd = !fFirst ? f : g;
1699 >        final Callable<Boolean> complete1 = failFirst ?
1700 >            () -> fst.completeExceptionally(ex) :
1701 >            () -> fst.complete(v1);
1702 >        final Callable<Boolean> complete2 = failFirst ?
1703 >            () -> snd.complete(v1) :
1704 >            () -> snd.completeExceptionally(ex);
1705 >
1706 >        final CompletableFuture<Integer> h1 = m.thenCombine(f, g, r1);
1707 >        assertTrue(complete1.call());
1708 >        final CompletableFuture<Integer> h2 = m.thenCombine(f, g, r2);
1709 >        checkIncomplete(h1);
1710 >        checkIncomplete(h2);
1711 >        assertTrue(complete2.call());
1712 >        final CompletableFuture<Integer> h3 = m.thenCombine(f, g, r3);
1713 >
1714 >        checkCompletedWithWrappedException(h1, ex);
1715 >        checkCompletedWithWrappedException(h2, ex);
1716 >        checkCompletedWithWrappedException(h3, ex);
1717 >        r1.assertNotInvoked();
1718 >        r2.assertNotInvoked();
1719 >        r3.assertNotInvoked();
1720 >        checkCompletedNormally(failFirst ? snd : fst, v1);
1721 >        checkCompletedExceptionally(failFirst ? fst : snd, ex);
1722      }}
1723  
1724      /**
1725 <     * thenCombine result completes exceptionally if action does
1725 >     * thenCombine result completes exceptionally if either source cancelled
1726       */
1727 <    public void testThenCombine_actionFailed() {
1727 >    public void testThenCombine_sourceCancelled() throws Throwable {
1728          for (ExecutionMode m : ExecutionMode.values())
1729 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1730          for (boolean fFirst : new boolean[] { true, false })
1731 +        for (boolean failFirst : new boolean[] { true, false })
1732          for (Integer v1 : new Integer[] { 1, null })
1310        for (Integer v2 : new Integer[] { 2, null })
1733      {
1734          final CompletableFuture<Integer> f = new CompletableFuture<>();
1735          final CompletableFuture<Integer> g = new CompletableFuture<>();
1736 <        final FailingBiFunction r = new FailingBiFunction();
1737 <        final CompletableFuture<Integer> h = m.thenCombine(f, g, r);
1738 <
1739 <        if (fFirst) {
1740 <            f.complete(v1);
1741 <            g.complete(v2);
1742 <        } else {
1743 <            g.complete(v2);
1744 <            f.complete(v1);
1745 <        }
1746 <
1747 <        checkCompletedWithWrappedCFException(h);
1748 <        checkCompletedNormally(f, v1);
1749 <        checkCompletedNormally(g, v2);
1736 >        final SubtractFunction r1 = new SubtractFunction(m);
1737 >        final SubtractFunction r2 = new SubtractFunction(m);
1738 >        final SubtractFunction r3 = new SubtractFunction(m);
1739 >
1740 >        final CompletableFuture<Integer> fst =  fFirst ? f : g;
1741 >        final CompletableFuture<Integer> snd = !fFirst ? f : g;
1742 >        final Callable<Boolean> complete1 = failFirst ?
1743 >            () -> fst.cancel(mayInterruptIfRunning) :
1744 >            () -> fst.complete(v1);
1745 >        final Callable<Boolean> complete2 = failFirst ?
1746 >            () -> snd.complete(v1) :
1747 >            () -> snd.cancel(mayInterruptIfRunning);
1748 >
1749 >        final CompletableFuture<Integer> h1 = m.thenCombine(f, g, r1);
1750 >        assertTrue(complete1.call());
1751 >        final CompletableFuture<Integer> h2 = m.thenCombine(f, g, r2);
1752 >        checkIncomplete(h1);
1753 >        checkIncomplete(h2);
1754 >        assertTrue(complete2.call());
1755 >        final CompletableFuture<Integer> h3 = m.thenCombine(f, g, r3);
1756 >
1757 >        checkCompletedWithWrappedCancellationException(h1);
1758 >        checkCompletedWithWrappedCancellationException(h2);
1759 >        checkCompletedWithWrappedCancellationException(h3);
1760 >        r1.assertNotInvoked();
1761 >        r2.assertNotInvoked();
1762 >        r3.assertNotInvoked();
1763 >        checkCompletedNormally(failFirst ? snd : fst, v1);
1764 >        checkCancelled(failFirst ? fst : snd);
1765      }}
1766  
1767      /**
1768 <     * thenCombine result completes exceptionally if either source cancelled
1768 >     * thenCombine result completes exceptionally if action does
1769       */
1770 <    public void testThenCombine_sourceCancelled() {
1770 >    public void testThenCombine_actionFailed() {
1771          for (ExecutionMode m : ExecutionMode.values())
1335        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1336        for (boolean createIncomplete : new boolean[] { true, false })
1772          for (boolean fFirst : new boolean[] { true, false })
1773          for (Integer v1 : new Integer[] { 1, null })
1774 +        for (Integer v2 : new Integer[] { 2, null })
1775      {
1776          final CompletableFuture<Integer> f = new CompletableFuture<>();
1777          final CompletableFuture<Integer> g = new CompletableFuture<>();
1778 <        final SubtractFunction r = new SubtractFunction();
1779 <
1780 <        (fFirst ? f : g).complete(v1);
1781 <        if (!createIncomplete)
1782 <            assertTrue((!fFirst ? f : g).cancel(mayInterruptIfRunning));
1783 <        final CompletableFuture<Integer> h = m.thenCombine(f, g, r);
1784 <        if (createIncomplete) {
1785 <            checkIncomplete(h);
1786 <            assertTrue((!fFirst ? f : g).cancel(mayInterruptIfRunning));
1787 <        }
1788 <
1789 <        checkCompletedWithWrappedCancellationException(h);
1790 <        checkCancelled(!fFirst ? f : g);
1791 <        assertEquals(0, r.invocationCount);
1792 <        checkCompletedNormally(fFirst ? f : g, v1);
1778 >        final FailingBiFunction r1 = new FailingBiFunction(m);
1779 >        final FailingBiFunction r2 = new FailingBiFunction(m);
1780 >        final FailingBiFunction r3 = new FailingBiFunction(m);
1781 >
1782 >        final CompletableFuture<Integer> fst =  fFirst ? f : g;
1783 >        final CompletableFuture<Integer> snd = !fFirst ? f : g;
1784 >        final Integer w1 =  fFirst ? v1 : v2;
1785 >        final Integer w2 = !fFirst ? v1 : v2;
1786 >
1787 >        final CompletableFuture<Integer> h1 = m.thenCombine(f, g, r1);
1788 >        assertTrue(fst.complete(w1));
1789 >        final CompletableFuture<Integer> h2 = m.thenCombine(f, g, r2);
1790 >        assertTrue(snd.complete(w2));
1791 >        final CompletableFuture<Integer> h3 = m.thenCombine(f, g, r3);
1792 >
1793 >        checkCompletedWithWrappedException(h1, r1.ex);
1794 >        checkCompletedWithWrappedException(h2, r2.ex);
1795 >        checkCompletedWithWrappedException(h3, r3.ex);
1796 >        r1.assertInvoked();
1797 >        r2.assertInvoked();
1798 >        r3.assertInvoked();
1799 >        checkCompletedNormally(f, v1);
1800 >        checkCompletedNormally(g, v2);
1801      }}
1802  
1803      /**
# Line 1362 | Line 1806 | public class CompletableFutureTest exten
1806       */
1807      public void testThenAcceptBoth_normalCompletion() {
1808          for (ExecutionMode m : ExecutionMode.values())
1365        for (boolean createIncomplete : new boolean[] { true, false })
1809          for (boolean fFirst : new boolean[] { true, false })
1810          for (Integer v1 : new Integer[] { 1, null })
1811          for (Integer v2 : new Integer[] { 2, null })
1812      {
1813          final CompletableFuture<Integer> f = new CompletableFuture<>();
1814          final CompletableFuture<Integer> g = new CompletableFuture<>();
1815 <        final SubtractAction r = new SubtractAction();
1816 <
1817 <        if (fFirst) f.complete(v1); else g.complete(v2);
1818 <        if (!createIncomplete)
1819 <            if (!fFirst) f.complete(v1); else g.complete(v2);
1820 <        final CompletableFuture<Void> h = m.thenAcceptBoth(f, g, r);
1821 <        if (createIncomplete) {
1822 <            checkIncomplete(h);
1823 <            assertEquals(0, r.invocationCount);
1824 <            if (!fFirst) f.complete(v1); else g.complete(v2);
1825 <        }
1826 <
1827 <        checkCompletedNormally(h, null);
1828 <        assertEquals(subtract(v1, v2), r.value);
1815 >        final SubtractAction r1 = new SubtractAction(m);
1816 >        final SubtractAction r2 = new SubtractAction(m);
1817 >        final SubtractAction r3 = new SubtractAction(m);
1818 >
1819 >        final CompletableFuture<Integer> fst =  fFirst ? f : g;
1820 >        final CompletableFuture<Integer> snd = !fFirst ? f : g;
1821 >        final Integer w1 =  fFirst ? v1 : v2;
1822 >        final Integer w2 = !fFirst ? v1 : v2;
1823 >
1824 >        final CompletableFuture<Void> h1 = m.thenAcceptBoth(f, g, r1);
1825 >        assertTrue(fst.complete(w1));
1826 >        final CompletableFuture<Void> h2 = m.thenAcceptBoth(f, g, r2);
1827 >        checkIncomplete(h1);
1828 >        checkIncomplete(h2);
1829 >        r1.assertNotInvoked();
1830 >        r2.assertNotInvoked();
1831 >        assertTrue(snd.complete(w2));
1832 >        final CompletableFuture<Void> h3 = m.thenAcceptBoth(f, g, r3);
1833 >
1834 >        checkCompletedNormally(h1, null);
1835 >        checkCompletedNormally(h2, null);
1836 >        checkCompletedNormally(h3, null);
1837 >        r1.assertValue(subtract(v1, v2));
1838 >        r2.assertValue(subtract(v1, v2));
1839 >        r3.assertValue(subtract(v1, v2));
1840          checkCompletedNormally(f, v1);
1841          checkCompletedNormally(g, v2);
1842      }}
# Line 1391 | Line 1845 | public class CompletableFutureTest exten
1845       * thenAcceptBoth result completes exceptionally after exceptional
1846       * completion of either source
1847       */
1848 <    public void testThenAcceptBoth_exceptionalCompletion() {
1848 >    public void testThenAcceptBoth_exceptionalCompletion() throws Throwable {
1849          for (ExecutionMode m : ExecutionMode.values())
1396        for (boolean createIncomplete : new boolean[] { true, false })
1850          for (boolean fFirst : new boolean[] { true, false })
1851 +        for (boolean failFirst : new boolean[] { true, false })
1852          for (Integer v1 : new Integer[] { 1, null })
1853      {
1854          final CompletableFuture<Integer> f = new CompletableFuture<>();
1855          final CompletableFuture<Integer> g = new CompletableFuture<>();
1856          final CFException ex = new CFException();
1857 <        final SubtractAction r = new SubtractAction();
1858 <
1859 <        (fFirst ? f : g).complete(v1);
1860 <        if (!createIncomplete)
1861 <            (!fFirst ? f : g).completeExceptionally(ex);
1862 <        final CompletableFuture<Void> h = m.thenAcceptBoth(f, g, r);
1863 <        if (createIncomplete) {
1864 <            checkIncomplete(h);
1865 <            (!fFirst ? f : g).completeExceptionally(ex);
1866 <        }
1867 <
1868 <        checkCompletedWithWrappedCFException(h, ex);
1869 <        assertEquals(0, r.invocationCount);
1870 <        checkCompletedNormally(fFirst ? f : g, v1);
1871 <        checkCompletedWithWrappedCFException(!fFirst ? f : g, ex);
1857 >        final SubtractAction r1 = new SubtractAction(m);
1858 >        final SubtractAction r2 = new SubtractAction(m);
1859 >        final SubtractAction r3 = new SubtractAction(m);
1860 >
1861 >        final CompletableFuture<Integer> fst =  fFirst ? f : g;
1862 >        final CompletableFuture<Integer> snd = !fFirst ? f : g;
1863 >        final Callable<Boolean> complete1 = failFirst ?
1864 >            () -> fst.completeExceptionally(ex) :
1865 >            () -> fst.complete(v1);
1866 >        final Callable<Boolean> complete2 = failFirst ?
1867 >            () -> snd.complete(v1) :
1868 >            () -> snd.completeExceptionally(ex);
1869 >
1870 >        final CompletableFuture<Void> h1 = m.thenAcceptBoth(f, g, r1);
1871 >        assertTrue(complete1.call());
1872 >        final CompletableFuture<Void> h2 = m.thenAcceptBoth(f, g, r2);
1873 >        checkIncomplete(h1);
1874 >        checkIncomplete(h2);
1875 >        assertTrue(complete2.call());
1876 >        final CompletableFuture<Void> h3 = m.thenAcceptBoth(f, g, r3);
1877 >
1878 >        checkCompletedWithWrappedException(h1, ex);
1879 >        checkCompletedWithWrappedException(h2, ex);
1880 >        checkCompletedWithWrappedException(h3, ex);
1881 >        r1.assertNotInvoked();
1882 >        r2.assertNotInvoked();
1883 >        r3.assertNotInvoked();
1884 >        checkCompletedNormally(failFirst ? snd : fst, v1);
1885 >        checkCompletedExceptionally(failFirst ? fst : snd, ex);
1886      }}
1887  
1888      /**
1889 <     * thenAcceptBoth result completes exceptionally if action does
1889 >     * thenAcceptBoth result completes exceptionally if either source cancelled
1890       */
1891 <    public void testThenAcceptBoth_actionFailed() {
1891 >    public void testThenAcceptBoth_sourceCancelled() throws Throwable {
1892          for (ExecutionMode m : ExecutionMode.values())
1893 +        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1894          for (boolean fFirst : new boolean[] { true, false })
1895 +        for (boolean failFirst : new boolean[] { true, false })
1896          for (Integer v1 : new Integer[] { 1, null })
1427        for (Integer v2 : new Integer[] { 2, null })
1897      {
1898          final CompletableFuture<Integer> f = new CompletableFuture<>();
1899          final CompletableFuture<Integer> g = new CompletableFuture<>();
1900 <        final FailingBiConsumer r = new FailingBiConsumer();
1901 <        final CompletableFuture<Void> h = m.thenAcceptBoth(f, g, r);
1902 <
1903 <        if (fFirst) {
1904 <            f.complete(v1);
1905 <            g.complete(v2);
1906 <        } else {
1907 <            g.complete(v2);
1908 <            f.complete(v1);
1909 <        }
1910 <
1911 <        checkCompletedWithWrappedCFException(h);
1912 <        checkCompletedNormally(f, v1);
1913 <        checkCompletedNormally(g, v2);
1900 >        final SubtractAction r1 = new SubtractAction(m);
1901 >        final SubtractAction r2 = new SubtractAction(m);
1902 >        final SubtractAction r3 = new SubtractAction(m);
1903 >
1904 >        final CompletableFuture<Integer> fst =  fFirst ? f : g;
1905 >        final CompletableFuture<Integer> snd = !fFirst ? f : g;
1906 >        final Callable<Boolean> complete1 = failFirst ?
1907 >            () -> fst.cancel(mayInterruptIfRunning) :
1908 >            () -> fst.complete(v1);
1909 >        final Callable<Boolean> complete2 = failFirst ?
1910 >            () -> snd.complete(v1) :
1911 >            () -> snd.cancel(mayInterruptIfRunning);
1912 >
1913 >        final CompletableFuture<Void> h1 = m.thenAcceptBoth(f, g, r1);
1914 >        assertTrue(complete1.call());
1915 >        final CompletableFuture<Void> h2 = m.thenAcceptBoth(f, g, r2);
1916 >        checkIncomplete(h1);
1917 >        checkIncomplete(h2);
1918 >        assertTrue(complete2.call());
1919 >        final CompletableFuture<Void> h3 = m.thenAcceptBoth(f, g, r3);
1920 >
1921 >        checkCompletedWithWrappedCancellationException(h1);
1922 >        checkCompletedWithWrappedCancellationException(h2);
1923 >        checkCompletedWithWrappedCancellationException(h3);
1924 >        r1.assertNotInvoked();
1925 >        r2.assertNotInvoked();
1926 >        r3.assertNotInvoked();
1927 >        checkCompletedNormally(failFirst ? snd : fst, v1);
1928 >        checkCancelled(failFirst ? fst : snd);
1929      }}
1930  
1931      /**
1932 <     * thenAcceptBoth result completes exceptionally if either source cancelled
1932 >     * thenAcceptBoth result completes exceptionally if action does
1933       */
1934 <    public void testThenAcceptBoth_sourceCancelled() {
1934 >    public void testThenAcceptBoth_actionFailed() {
1935          for (ExecutionMode m : ExecutionMode.values())
1452        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1453        for (boolean createIncomplete : new boolean[] { true, false })
1936          for (boolean fFirst : new boolean[] { true, false })
1937          for (Integer v1 : new Integer[] { 1, null })
1938 +        for (Integer v2 : new Integer[] { 2, null })
1939      {
1940          final CompletableFuture<Integer> f = new CompletableFuture<>();
1941          final CompletableFuture<Integer> g = new CompletableFuture<>();
1942 <        final SubtractAction r = new SubtractAction();
1943 <
1944 <        (fFirst ? f : g).complete(v1);
1945 <        if (!createIncomplete)
1946 <            assertTrue((!fFirst ? f : g).cancel(mayInterruptIfRunning));
1947 <        final CompletableFuture<Void> h = m.thenAcceptBoth(f, g, r);
1948 <        if (createIncomplete) {
1949 <            checkIncomplete(h);
1950 <            assertTrue((!fFirst ? f : g).cancel(mayInterruptIfRunning));
1951 <        }
1952 <
1953 <        checkCompletedWithWrappedCancellationException(h);
1954 <        checkCancelled(!fFirst ? f : g);
1955 <        assertEquals(0, r.invocationCount);
1956 <        checkCompletedNormally(fFirst ? f : g, v1);
1942 >        final FailingBiConsumer r1 = new FailingBiConsumer(m);
1943 >        final FailingBiConsumer r2 = new FailingBiConsumer(m);
1944 >        final FailingBiConsumer r3 = new FailingBiConsumer(m);
1945 >
1946 >        final CompletableFuture<Integer> fst =  fFirst ? f : g;
1947 >        final CompletableFuture<Integer> snd = !fFirst ? f : g;
1948 >        final Integer w1 =  fFirst ? v1 : v2;
1949 >        final Integer w2 = !fFirst ? v1 : v2;
1950 >
1951 >        final CompletableFuture<Void> h1 = m.thenAcceptBoth(f, g, r1);
1952 >        assertTrue(fst.complete(w1));
1953 >        final CompletableFuture<Void> h2 = m.thenAcceptBoth(f, g, r2);
1954 >        assertTrue(snd.complete(w2));
1955 >        final CompletableFuture<Void> h3 = m.thenAcceptBoth(f, g, r3);
1956 >
1957 >        checkCompletedWithWrappedException(h1, r1.ex);
1958 >        checkCompletedWithWrappedException(h2, r2.ex);
1959 >        checkCompletedWithWrappedException(h3, r3.ex);
1960 >        r1.assertInvoked();
1961 >        r2.assertInvoked();
1962 >        r3.assertInvoked();
1963 >        checkCompletedNormally(f, v1);
1964 >        checkCompletedNormally(g, v2);
1965      }}
1966  
1967      /**
# Line 1479 | Line 1970 | public class CompletableFutureTest exten
1970       */
1971      public void testRunAfterBoth_normalCompletion() {
1972          for (ExecutionMode m : ExecutionMode.values())
1482        for (boolean createIncomplete : new boolean[] { true, false })
1973          for (boolean fFirst : new boolean[] { true, false })
1974          for (Integer v1 : new Integer[] { 1, null })
1975          for (Integer v2 : new Integer[] { 2, null })
1976      {
1977          final CompletableFuture<Integer> f = new CompletableFuture<>();
1978          final CompletableFuture<Integer> g = new CompletableFuture<>();
1979 <        final Noop r = new Noop(m);
1980 <
1981 <        if (fFirst) f.complete(v1); else g.complete(v2);
1982 <        if (!createIncomplete)
1983 <            if (!fFirst) f.complete(v1); else g.complete(v2);
1984 <        final CompletableFuture<Void> h = m.runAfterBoth(f, g, r);
1985 <        if (createIncomplete) {
1986 <            checkIncomplete(h);
1987 <            assertEquals(0, r.invocationCount);
1988 <            if (!fFirst) f.complete(v1); else g.complete(v2);
1989 <        }
1990 <
1991 <        checkCompletedNormally(h, null);
1992 <        assertEquals(1, r.invocationCount);
1979 >        final Noop r1 = new Noop(m);
1980 >        final Noop r2 = new Noop(m);
1981 >        final Noop r3 = new Noop(m);
1982 >
1983 >        final CompletableFuture<Integer> fst =  fFirst ? f : g;
1984 >        final CompletableFuture<Integer> snd = !fFirst ? f : g;
1985 >        final Integer w1 =  fFirst ? v1 : v2;
1986 >        final Integer w2 = !fFirst ? v1 : v2;
1987 >
1988 >        final CompletableFuture<Void> h1 = m.runAfterBoth(f, g, r1);
1989 >        assertTrue(fst.complete(w1));
1990 >        final CompletableFuture<Void> h2 = m.runAfterBoth(f, g, r2);
1991 >        checkIncomplete(h1);
1992 >        checkIncomplete(h2);
1993 >        r1.assertNotInvoked();
1994 >        r2.assertNotInvoked();
1995 >        assertTrue(snd.complete(w2));
1996 >        final CompletableFuture<Void> h3 = m.runAfterBoth(f, g, r3);
1997 >
1998 >        checkCompletedNormally(h1, null);
1999 >        checkCompletedNormally(h2, null);
2000 >        checkCompletedNormally(h3, null);
2001 >        r1.assertInvoked();
2002 >        r2.assertInvoked();
2003 >        r3.assertInvoked();
2004          checkCompletedNormally(f, v1);
2005          checkCompletedNormally(g, v2);
2006      }}
# Line 1508 | Line 2009 | public class CompletableFutureTest exten
2009       * runAfterBoth result completes exceptionally after exceptional
2010       * completion of either source
2011       */
2012 <    public void testRunAfterBoth_exceptionalCompletion() {
2012 >    public void testRunAfterBoth_exceptionalCompletion() throws Throwable {
2013          for (ExecutionMode m : ExecutionMode.values())
1513        for (boolean createIncomplete : new boolean[] { true, false })
2014          for (boolean fFirst : new boolean[] { true, false })
2015 +        for (boolean failFirst : new boolean[] { true, false })
2016          for (Integer v1 : new Integer[] { 1, null })
2017      {
2018          final CompletableFuture<Integer> f = new CompletableFuture<>();
2019          final CompletableFuture<Integer> g = new CompletableFuture<>();
2020          final CFException ex = new CFException();
2021 <        final Noop r = new Noop(m);
2022 <
2023 <        (fFirst ? f : g).complete(v1);
2024 <        if (!createIncomplete)
2025 <            (!fFirst ? f : g).completeExceptionally(ex);
2026 <        final CompletableFuture<Void> h = m.runAfterBoth(f, g, r);
2027 <        if (createIncomplete) {
2028 <            checkIncomplete(h);
2029 <            (!fFirst ? f : g).completeExceptionally(ex);
2030 <        }
2031 <
2032 <        checkCompletedWithWrappedCFException(h, ex);
2033 <        assertEquals(0, r.invocationCount);
2034 <        checkCompletedNormally(fFirst ? f : g, v1);
2035 <        checkCompletedWithWrappedCFException(!fFirst ? f : g, ex);
2036 <    }}
2037 <
2038 <    /**
2039 <     * runAfterBoth result completes exceptionally if action does
2040 <     */
2041 <    public void testRunAfterBoth_actionFailed() {
2042 <        for (ExecutionMode m : ExecutionMode.values())
2043 <        for (boolean fFirst : new boolean[] { true, false })
2044 <        for (Integer v1 : new Integer[] { 1, null })
2045 <        for (Integer v2 : new Integer[] { 2, null })
2046 <    {
2047 <        final CompletableFuture<Integer> f = new CompletableFuture<>();
2048 <        final CompletableFuture<Integer> g = new CompletableFuture<>();
2049 <        final FailingRunnable r = new FailingRunnable();
1549 <
1550 <        CompletableFuture<Void> h1 = m.runAfterBoth(f, g, r);
1551 <        if (fFirst) {
1552 <            f.complete(v1);
1553 <            g.complete(v2);
1554 <        } else {
1555 <            g.complete(v2);
1556 <            f.complete(v1);
1557 <        }
1558 <        CompletableFuture<Void> h2 = m.runAfterBoth(f, g, r);
1559 <
1560 <        checkCompletedWithWrappedCFException(h1);
1561 <        checkCompletedWithWrappedCFException(h2);
1562 <        checkCompletedNormally(f, v1);
1563 <        checkCompletedNormally(g, v2);
2021 >        final Noop r1 = new Noop(m);
2022 >        final Noop r2 = new Noop(m);
2023 >        final Noop r3 = new Noop(m);
2024 >
2025 >        final CompletableFuture<Integer> fst =  fFirst ? f : g;
2026 >        final CompletableFuture<Integer> snd = !fFirst ? f : g;
2027 >        final Callable<Boolean> complete1 = failFirst ?
2028 >            () -> fst.completeExceptionally(ex) :
2029 >            () -> fst.complete(v1);
2030 >        final Callable<Boolean> complete2 = failFirst ?
2031 >            () -> snd.complete(v1) :
2032 >            () -> snd.completeExceptionally(ex);
2033 >
2034 >        final CompletableFuture<Void> h1 = m.runAfterBoth(f, g, r1);
2035 >        assertTrue(complete1.call());
2036 >        final CompletableFuture<Void> h2 = m.runAfterBoth(f, g, r2);
2037 >        checkIncomplete(h1);
2038 >        checkIncomplete(h2);
2039 >        assertTrue(complete2.call());
2040 >        final CompletableFuture<Void> h3 = m.runAfterBoth(f, g, r3);
2041 >
2042 >        checkCompletedWithWrappedException(h1, ex);
2043 >        checkCompletedWithWrappedException(h2, ex);
2044 >        checkCompletedWithWrappedException(h3, ex);
2045 >        r1.assertNotInvoked();
2046 >        r2.assertNotInvoked();
2047 >        r3.assertNotInvoked();
2048 >        checkCompletedNormally(failFirst ? snd : fst, v1);
2049 >        checkCompletedExceptionally(failFirst ? fst : snd, ex);
2050      }}
2051  
2052      /**
2053       * runAfterBoth result completes exceptionally if either source cancelled
2054       */
2055 <    public void testRunAfterBoth_sourceCancelled() {
2055 >    public void testRunAfterBoth_sourceCancelled() throws Throwable {
2056          for (ExecutionMode m : ExecutionMode.values())
2057          for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1572        for (boolean createIncomplete : new boolean[] { true, false })
2058          for (boolean fFirst : new boolean[] { true, false })
2059 +        for (boolean failFirst : new boolean[] { true, false })
2060          for (Integer v1 : new Integer[] { 1, null })
2061      {
2062          final CompletableFuture<Integer> f = new CompletableFuture<>();
2063          final CompletableFuture<Integer> g = new CompletableFuture<>();
2064 <        final Noop r = new Noop(m);
2065 <
2066 <
2067 <        (fFirst ? f : g).complete(v1);
2068 <        if (!createIncomplete)
2069 <            assertTrue((!fFirst ? f : g).cancel(mayInterruptIfRunning));
2070 <        final CompletableFuture<Void> h = m.runAfterBoth(f, g, r);
2071 <        if (createIncomplete) {
2072 <            checkIncomplete(h);
2073 <            assertTrue((!fFirst ? f : g).cancel(mayInterruptIfRunning));
2074 <        }
2075 <
2076 <        checkCompletedWithWrappedCancellationException(h);
2077 <        checkCancelled(!fFirst ? f : g);
2078 <        assertEquals(0, r.invocationCount);
2079 <        checkCompletedNormally(fFirst ? f : g, v1);
2064 >        final Noop r1 = new Noop(m);
2065 >        final Noop r2 = new Noop(m);
2066 >        final Noop r3 = new Noop(m);
2067 >
2068 >        final CompletableFuture<Integer> fst =  fFirst ? f : g;
2069 >        final CompletableFuture<Integer> snd = !fFirst ? f : g;
2070 >        final Callable<Boolean> complete1 = failFirst ?
2071 >            () -> fst.cancel(mayInterruptIfRunning) :
2072 >            () -> fst.complete(v1);
2073 >        final Callable<Boolean> complete2 = failFirst ?
2074 >            () -> snd.complete(v1) :
2075 >            () -> snd.cancel(mayInterruptIfRunning);
2076 >
2077 >        final CompletableFuture<Void> h1 = m.runAfterBoth(f, g, r1);
2078 >        assertTrue(complete1.call());
2079 >        final CompletableFuture<Void> h2 = m.runAfterBoth(f, g, r2);
2080 >        checkIncomplete(h1);
2081 >        checkIncomplete(h2);
2082 >        assertTrue(complete2.call());
2083 >        final CompletableFuture<Void> h3 = m.runAfterBoth(f, g, r3);
2084 >
2085 >        checkCompletedWithWrappedCancellationException(h1);
2086 >        checkCompletedWithWrappedCancellationException(h2);
2087 >        checkCompletedWithWrappedCancellationException(h3);
2088 >        r1.assertNotInvoked();
2089 >        r2.assertNotInvoked();
2090 >        r3.assertNotInvoked();
2091 >        checkCompletedNormally(failFirst ? snd : fst, v1);
2092 >        checkCancelled(failFirst ? fst : snd);
2093      }}
2094  
2095      /**
2096 <     * applyToEither result completes normally after normal completion
1598 <     * of either source
2096 >     * runAfterBoth result completes exceptionally if action does
2097       */
2098 <    public void testApplyToEither_normalCompletion() {
2098 >    public void testRunAfterBoth_actionFailed() {
2099          for (ExecutionMode m : ExecutionMode.values())
1602        for (boolean createIncomplete : new boolean[] { true, false })
2100          for (boolean fFirst : new boolean[] { true, false })
2101          for (Integer v1 : new Integer[] { 1, null })
2102          for (Integer v2 : new Integer[] { 2, null })
2103      {
2104          final CompletableFuture<Integer> f = new CompletableFuture<>();
2105          final CompletableFuture<Integer> g = new CompletableFuture<>();
2106 <        final IncFunction r = new IncFunction();
2107 <
2108 <        if (!createIncomplete)
2109 <            if (fFirst) f.complete(v1); else g.complete(v2);
2110 <        final CompletableFuture<Integer> h = m.applyToEither(f, g, r);
2111 <        if (createIncomplete) {
2112 <            checkIncomplete(h);
2113 <            assertEquals(0, r.invocationCount);
2114 <            if (fFirst) f.complete(v1); else g.complete(v2);
2115 <        }
2116 <        checkCompletedNormally(h, inc(fFirst ? v1 : v2));
2117 <        if (!fFirst) f.complete(v1); else g.complete(v2);
2118 <
2106 >        final FailingRunnable r1 = new FailingRunnable(m);
2107 >        final FailingRunnable r2 = new FailingRunnable(m);
2108 >        final FailingRunnable r3 = new FailingRunnable(m);
2109 >
2110 >        final CompletableFuture<Integer> fst =  fFirst ? f : g;
2111 >        final CompletableFuture<Integer> snd = !fFirst ? f : g;
2112 >        final Integer w1 =  fFirst ? v1 : v2;
2113 >        final Integer w2 = !fFirst ? v1 : v2;
2114 >
2115 >        final CompletableFuture<Void> h1 = m.runAfterBoth(f, g, r1);
2116 >        assertTrue(fst.complete(w1));
2117 >        final CompletableFuture<Void> h2 = m.runAfterBoth(f, g, r2);
2118 >        assertTrue(snd.complete(w2));
2119 >        final CompletableFuture<Void> h3 = m.runAfterBoth(f, g, r3);
2120 >
2121 >        checkCompletedWithWrappedException(h1, r1.ex);
2122 >        checkCompletedWithWrappedException(h2, r2.ex);
2123 >        checkCompletedWithWrappedException(h3, r3.ex);
2124 >        r1.assertInvoked();
2125 >        r2.assertInvoked();
2126 >        r3.assertInvoked();
2127          checkCompletedNormally(f, v1);
2128          checkCompletedNormally(g, v2);
1624        checkCompletedNormally(h, inc(fFirst ? v1 : v2));
2129      }}
2130  
2131 <    public void testApplyToEither_normalCompletionBothAvailable() {
2131 >    /**
2132 >     * applyToEither result completes normally after normal completion
2133 >     * of either source
2134 >     */
2135 >    public void testApplyToEither_normalCompletion() {
2136          for (ExecutionMode m : ExecutionMode.values())
1629        for (boolean fFirst : new boolean[] { true, false })
2137          for (Integer v1 : new Integer[] { 1, null })
2138          for (Integer v2 : new Integer[] { 2, null })
2139      {
2140          final CompletableFuture<Integer> f = new CompletableFuture<>();
2141          final CompletableFuture<Integer> g = new CompletableFuture<>();
2142 <        final IncFunction r = new IncFunction();
2142 >        final IncFunction[] rs = new IncFunction[6];
2143 >        for (int i = 0; i < rs.length; i++) rs[i] = new IncFunction(m);
2144  
2145 <        if (fFirst) {
2146 <            f.complete(v1);
2147 <            g.complete(v2);
2148 <        } else {
2149 <            g.complete(v2);
2150 <            f.complete(v1);
2151 <        }
2145 >        final CompletableFuture<Integer> h0 = m.applyToEither(f, g, rs[0]);
2146 >        final CompletableFuture<Integer> h1 = m.applyToEither(g, f, rs[1]);
2147 >        checkIncomplete(h0);
2148 >        checkIncomplete(h1);
2149 >        rs[0].assertNotInvoked();
2150 >        rs[1].assertNotInvoked();
2151 >        f.complete(v1);
2152 >        checkCompletedNormally(h0, inc(v1));
2153 >        checkCompletedNormally(h1, inc(v1));
2154 >        final CompletableFuture<Integer> h2 = m.applyToEither(f, g, rs[2]);
2155 >        final CompletableFuture<Integer> h3 = m.applyToEither(g, f, rs[3]);
2156 >        checkCompletedNormally(h2, inc(v1));
2157 >        checkCompletedNormally(h3, inc(v1));
2158 >        g.complete(v2);
2159  
2160 <        final CompletableFuture<Integer> h = m.applyToEither(f, g, r);
2160 >        // unspecified behavior - both source completions available
2161 >        final CompletableFuture<Integer> h4 = m.applyToEither(f, g, rs[4]);
2162 >        final CompletableFuture<Integer> h5 = m.applyToEither(g, f, rs[5]);
2163 >        rs[4].assertValue(h4.join());
2164 >        rs[5].assertValue(h5.join());
2165 >        assertTrue(Objects.equals(inc(v1), h4.join()) ||
2166 >                   Objects.equals(inc(v2), h4.join()));
2167 >        assertTrue(Objects.equals(inc(v1), h5.join()) ||
2168 >                   Objects.equals(inc(v2), h5.join()));
2169  
2170          checkCompletedNormally(f, v1);
2171          checkCompletedNormally(g, v2);
2172 <
2173 <        // unspecified behavior
2174 <        assertTrue(Objects.equals(h.join(), inc(v1)) ||
2175 <                   Objects.equals(h.join(), inc(v2)));
2176 <        assertEquals(1, r.invocationCount);
2172 >        checkCompletedNormally(h0, inc(v1));
2173 >        checkCompletedNormally(h1, inc(v1));
2174 >        checkCompletedNormally(h2, inc(v1));
2175 >        checkCompletedNormally(h3, inc(v1));
2176 >        for (int i = 0; i < 4; i++) rs[i].assertValue(inc(v1));
2177      }}
2178  
2179      /**
2180       * applyToEither result completes exceptionally after exceptional
2181       * completion of either source
2182       */
2183 <    public void testApplyToEither_exceptionalCompletion1() {
2183 >    public void testApplyToEither_exceptionalCompletion() {
2184          for (ExecutionMode m : ExecutionMode.values())
1662        for (boolean createIncomplete : new boolean[] { true, false })
1663        for (boolean fFirst : new boolean[] { true, false })
2185          for (Integer v1 : new Integer[] { 1, null })
2186      {
2187          final CompletableFuture<Integer> f = new CompletableFuture<>();
2188          final CompletableFuture<Integer> g = new CompletableFuture<>();
2189          final CFException ex = new CFException();
2190 <        final IncFunction r = new IncFunction();
2190 >        final IncFunction[] rs = new IncFunction[6];
2191 >        for (int i = 0; i < rs.length; i++) rs[i] = new IncFunction(m);
2192  
2193 <        if (!createIncomplete) (fFirst ? f : g).completeExceptionally(ex);
2194 <        final CompletableFuture<Integer> h = m.applyToEither(f, g, r);
2195 <        if (createIncomplete) {
2196 <            checkIncomplete(h);
2197 <            assertEquals(0, r.invocationCount);
2198 <            (fFirst ? f : g).completeExceptionally(ex);
2193 >        final CompletableFuture<Integer> h0 = m.applyToEither(f, g, rs[0]);
2194 >        final CompletableFuture<Integer> h1 = m.applyToEither(g, f, rs[1]);
2195 >        checkIncomplete(h0);
2196 >        checkIncomplete(h1);
2197 >        rs[0].assertNotInvoked();
2198 >        rs[1].assertNotInvoked();
2199 >        f.completeExceptionally(ex);
2200 >        checkCompletedWithWrappedException(h0, ex);
2201 >        checkCompletedWithWrappedException(h1, ex);
2202 >        final CompletableFuture<Integer> h2 = m.applyToEither(f, g, rs[2]);
2203 >        final CompletableFuture<Integer> h3 = m.applyToEither(g, f, rs[3]);
2204 >        checkCompletedWithWrappedException(h2, ex);
2205 >        checkCompletedWithWrappedException(h3, ex);
2206 >        g.complete(v1);
2207 >
2208 >        // unspecified behavior - both source completions available
2209 >        final CompletableFuture<Integer> h4 = m.applyToEither(f, g, rs[4]);
2210 >        final CompletableFuture<Integer> h5 = m.applyToEither(g, f, rs[5]);
2211 >        try {
2212 >            assertEquals(inc(v1), h4.join());
2213 >            rs[4].assertValue(inc(v1));
2214 >        } catch (CompletionException ok) {
2215 >            checkCompletedWithWrappedException(h4, ex);
2216 >            rs[4].assertNotInvoked();
2217 >        }
2218 >        try {
2219 >            assertEquals(inc(v1), h5.join());
2220 >            rs[5].assertValue(inc(v1));
2221 >        } catch (CompletionException ok) {
2222 >            checkCompletedWithWrappedException(h5, ex);
2223 >            rs[5].assertNotInvoked();
2224          }
2225  
2226 <        checkCompletedWithWrappedCFException(h, ex);
2227 <        (!fFirst ? f : g).complete(v1);
2228 <
2229 <        assertEquals(0, r.invocationCount);
2230 <        checkCompletedNormally(!fFirst ? f : g, v1);
2231 <        checkCompletedWithWrappedCFException(fFirst ? f : g, ex);
2232 <        checkCompletedWithWrappedCFException(h, ex);
2226 >        checkCompletedExceptionally(f, ex);
2227 >        checkCompletedNormally(g, v1);
2228 >        checkCompletedWithWrappedException(h0, ex);
2229 >        checkCompletedWithWrappedException(h1, ex);
2230 >        checkCompletedWithWrappedException(h2, ex);
2231 >        checkCompletedWithWrappedException(h3, ex);
2232 >        checkCompletedWithWrappedException(h4, ex);
2233 >        for (int i = 0; i < 4; i++) rs[i].assertNotInvoked();
2234      }}
2235  
2236      public void testApplyToEither_exceptionalCompletion2() {
2237          for (ExecutionMode m : ExecutionMode.values())
1690        for (boolean reverseArgs : new boolean[] { true, false })
2238          for (boolean fFirst : new boolean[] { true, false })
2239          for (Integer v1 : new Integer[] { 1, null })
2240      {
2241          final CompletableFuture<Integer> f = new CompletableFuture<>();
2242          final CompletableFuture<Integer> g = new CompletableFuture<>();
1696        final IncFunction r1 = new IncFunction();
1697        final IncFunction r2 = new IncFunction();
2243          final CFException ex = new CFException();
2244 <        final CompletableFuture<Integer> j = (reverseArgs ? g : f);
2245 <        final CompletableFuture<Integer> k = (reverseArgs ? f : g);
2246 <        final CompletableFuture<Integer> h1 = m.applyToEither(j, k, r1);
2247 <        if (fFirst) {
2248 <            f.complete(v1);
2249 <            g.completeExceptionally(ex);
2250 <        } else {
2251 <            g.completeExceptionally(ex);
2252 <            f.complete(v1);
1708 <        }
1709 <        final CompletableFuture<Integer> h2 = m.applyToEither(j, k, r2);
2244 >        final IncFunction[] rs = new IncFunction[6];
2245 >        for (int i = 0; i < rs.length; i++) rs[i] = new IncFunction(m);
2246 >
2247 >        final CompletableFuture<Integer> h0 = m.applyToEither(f, g, rs[0]);
2248 >        final CompletableFuture<Integer> h1 = m.applyToEither(g, f, rs[1]);
2249 >        assertTrue(fFirst ? f.complete(v1) : g.completeExceptionally(ex));
2250 >        assertTrue(!fFirst ? f.complete(v1) : g.completeExceptionally(ex));
2251 >        final CompletableFuture<Integer> h2 = m.applyToEither(f, g, rs[2]);
2252 >        final CompletableFuture<Integer> h3 = m.applyToEither(g, f, rs[3]);
2253  
2254 <        // unspecified behavior
2254 >        // unspecified behavior - both source completions available
2255 >        try {
2256 >            assertEquals(inc(v1), h0.join());
2257 >            rs[0].assertValue(inc(v1));
2258 >        } catch (CompletionException ok) {
2259 >            checkCompletedWithWrappedException(h0, ex);
2260 >            rs[0].assertNotInvoked();
2261 >        }
2262          try {
2263              assertEquals(inc(v1), h1.join());
2264 <            assertEquals(1, r1.invocationCount);
2264 >            rs[1].assertValue(inc(v1));
2265          } catch (CompletionException ok) {
2266 <            checkCompletedWithWrappedCFException(h1, ex);
2267 <            assertEquals(0, r1.invocationCount);
2266 >            checkCompletedWithWrappedException(h1, ex);
2267 >            rs[1].assertNotInvoked();
2268          }
1719
2269          try {
2270              assertEquals(inc(v1), h2.join());
2271 <            assertEquals(1, r2.invocationCount);
2271 >            rs[2].assertValue(inc(v1));
2272          } catch (CompletionException ok) {
2273 <            checkCompletedWithWrappedCFException(h2, ex);
2274 <            assertEquals(0, r2.invocationCount);
2273 >            checkCompletedWithWrappedException(h2, ex);
2274 >            rs[2].assertNotInvoked();
2275 >        }
2276 >        try {
2277 >            assertEquals(inc(v1), h3.join());
2278 >            rs[3].assertValue(inc(v1));
2279 >        } catch (CompletionException ok) {
2280 >            checkCompletedWithWrappedException(h3, ex);
2281 >            rs[3].assertNotInvoked();
2282          }
2283  
1728        checkCompletedWithWrappedCFException(g, ex);
1729        checkCompletedNormally(f, v1);
1730    }}
1731
1732    /**
1733     * applyToEither result completes exceptionally if action does
1734     */
1735    public void testApplyToEither_actionFailed1() {
1736        for (ExecutionMode m : ExecutionMode.values())
1737        for (Integer v1 : new Integer[] { 1, null })
1738        for (Integer v2 : new Integer[] { 2, null })
1739    {
1740        final CompletableFuture<Integer> f = new CompletableFuture<>();
1741        final CompletableFuture<Integer> g = new CompletableFuture<>();
1742        final FailingFunction r = new FailingFunction();
1743        final CompletableFuture<Integer> h = m.applyToEither(f, g, r);
1744
1745        f.complete(v1);
1746        checkCompletedWithWrappedCFException(h);
1747        g.complete(v2);
1748        checkCompletedNormally(f, v1);
1749        checkCompletedNormally(g, v2);
1750    }}
1751
1752    public void testApplyToEither_actionFailed2() {
1753        for (ExecutionMode m : ExecutionMode.values())
1754        for (Integer v1 : new Integer[] { 1, null })
1755        for (Integer v2 : new Integer[] { 2, null })
1756    {
1757        final CompletableFuture<Integer> f = new CompletableFuture<>();
1758        final CompletableFuture<Integer> g = new CompletableFuture<>();
1759        final FailingFunction r = new FailingFunction();
1760        final CompletableFuture<Integer> h = m.applyToEither(f, g, r);
1761
1762        g.complete(v2);
1763        checkCompletedWithWrappedCFException(h);
1764        f.complete(v1);
2284          checkCompletedNormally(f, v1);
2285 <        checkCompletedNormally(g, v2);
2285 >        checkCompletedExceptionally(g, ex);
2286      }}
2287  
2288      /**
2289       * applyToEither result completes exceptionally if either source cancelled
2290       */
2291 <    public void testApplyToEither_sourceCancelled1() {
2291 >    public void testApplyToEither_sourceCancelled() {
2292          for (ExecutionMode m : ExecutionMode.values())
2293          for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1775        for (boolean createIncomplete : new boolean[] { true, false })
1776        for (boolean fFirst : new boolean[] { true, false })
2294          for (Integer v1 : new Integer[] { 1, null })
2295      {
2296          final CompletableFuture<Integer> f = new CompletableFuture<>();
2297          final CompletableFuture<Integer> g = new CompletableFuture<>();
2298 <        final IncFunction r = new IncFunction();
2298 >        final IncFunction[] rs = new IncFunction[6];
2299 >        for (int i = 0; i < rs.length; i++) rs[i] = new IncFunction(m);
2300  
2301 <        if (!createIncomplete) assertTrue((fFirst ? f : g).cancel(mayInterruptIfRunning));
2302 <        final CompletableFuture<Integer> h = m.applyToEither(f, g, r);
2303 <        if (createIncomplete) {
2304 <            checkIncomplete(h);
2305 <            assertEquals(0, r.invocationCount);
2306 <            assertTrue((fFirst ? f : g).cancel(mayInterruptIfRunning));
2301 >        final CompletableFuture<Integer> h0 = m.applyToEither(f, g, rs[0]);
2302 >        final CompletableFuture<Integer> h1 = m.applyToEither(g, f, rs[1]);
2303 >        checkIncomplete(h0);
2304 >        checkIncomplete(h1);
2305 >        rs[0].assertNotInvoked();
2306 >        rs[1].assertNotInvoked();
2307 >        f.cancel(mayInterruptIfRunning);
2308 >        checkCompletedWithWrappedCancellationException(h0);
2309 >        checkCompletedWithWrappedCancellationException(h1);
2310 >        final CompletableFuture<Integer> h2 = m.applyToEither(f, g, rs[2]);
2311 >        final CompletableFuture<Integer> h3 = m.applyToEither(g, f, rs[3]);
2312 >        checkCompletedWithWrappedCancellationException(h2);
2313 >        checkCompletedWithWrappedCancellationException(h3);
2314 >        g.complete(v1);
2315 >
2316 >        // unspecified behavior - both source completions available
2317 >        final CompletableFuture<Integer> h4 = m.applyToEither(f, g, rs[4]);
2318 >        final CompletableFuture<Integer> h5 = m.applyToEither(g, f, rs[5]);
2319 >        try {
2320 >            assertEquals(inc(v1), h4.join());
2321 >            rs[4].assertValue(inc(v1));
2322 >        } catch (CompletionException ok) {
2323 >            checkCompletedWithWrappedCancellationException(h4);
2324 >            rs[4].assertNotInvoked();
2325 >        }
2326 >        try {
2327 >            assertEquals(inc(v1), h5.join());
2328 >            rs[5].assertValue(inc(v1));
2329 >        } catch (CompletionException ok) {
2330 >            checkCompletedWithWrappedCancellationException(h5);
2331 >            rs[5].assertNotInvoked();
2332          }
2333  
2334 <        checkCompletedWithWrappedCancellationException(h);
2335 <        (!fFirst ? f : g).complete(v1);
2336 <
2337 <        assertEquals(0, r.invocationCount);
2338 <        checkCompletedNormally(!fFirst ? f : g, v1);
2339 <        checkCancelled(fFirst ? f : g);
2340 <        checkCompletedWithWrappedCancellationException(h);
2334 >        checkCancelled(f);
2335 >        checkCompletedNormally(g, v1);
2336 >        checkCompletedWithWrappedCancellationException(h0);
2337 >        checkCompletedWithWrappedCancellationException(h1);
2338 >        checkCompletedWithWrappedCancellationException(h2);
2339 >        checkCompletedWithWrappedCancellationException(h3);
2340 >        for (int i = 0; i < 4; i++) rs[i].assertNotInvoked();
2341      }}
2342  
2343      public void testApplyToEither_sourceCancelled2() {
2344          for (ExecutionMode m : ExecutionMode.values())
2345          for (boolean mayInterruptIfRunning : new boolean[] { true, false })
1803        for (boolean reverseArgs : new boolean[] { true, false })
2346          for (boolean fFirst : new boolean[] { true, false })
2347          for (Integer v1 : new Integer[] { 1, null })
2348      {
2349          final CompletableFuture<Integer> f = new CompletableFuture<>();
2350          final CompletableFuture<Integer> g = new CompletableFuture<>();
2351 <        final IncFunction r1 = new IncFunction();
2352 <        final IncFunction r2 = new IncFunction();
1811 <        final CFException ex = new CFException();
1812 <        final CompletableFuture<Integer> j = (reverseArgs ? g : f);
1813 <        final CompletableFuture<Integer> k = (reverseArgs ? f : g);
2351 >        final IncFunction[] rs = new IncFunction[6];
2352 >        for (int i = 0; i < rs.length; i++) rs[i] = new IncFunction(m);
2353  
2354 <        final CompletableFuture<Integer> h1 = m.applyToEither(j, k, r1);
2355 <        if (fFirst) {
2356 <            f.complete(v1);
2357 <            assertTrue(g.cancel(mayInterruptIfRunning));
2358 <        } else {
2359 <            assertTrue(g.cancel(mayInterruptIfRunning));
1821 <            f.complete(v1);
1822 <        }
1823 <        final CompletableFuture<Integer> h2 = m.applyToEither(j, k, r2);
2354 >        final CompletableFuture<Integer> h0 = m.applyToEither(f, g, rs[0]);
2355 >        final CompletableFuture<Integer> h1 = m.applyToEither(g, f, rs[1]);
2356 >        assertTrue(fFirst ? f.complete(v1) : g.cancel(mayInterruptIfRunning));
2357 >        assertTrue(!fFirst ? f.complete(v1) : g.cancel(mayInterruptIfRunning));
2358 >        final CompletableFuture<Integer> h2 = m.applyToEither(f, g, rs[2]);
2359 >        final CompletableFuture<Integer> h3 = m.applyToEither(g, f, rs[3]);
2360  
2361 <        // unspecified behavior
2361 >        // unspecified behavior - both source completions available
2362 >        try {
2363 >            assertEquals(inc(v1), h0.join());
2364 >            rs[0].assertValue(inc(v1));
2365 >        } catch (CompletionException ok) {
2366 >            checkCompletedWithWrappedCancellationException(h0);
2367 >            rs[0].assertNotInvoked();
2368 >        }
2369          try {
2370              assertEquals(inc(v1), h1.join());
2371 <            assertEquals(1, r1.invocationCount);
2371 >            rs[1].assertValue(inc(v1));
2372          } catch (CompletionException ok) {
2373              checkCompletedWithWrappedCancellationException(h1);
2374 <            assertEquals(0, r1.invocationCount);
2374 >            rs[1].assertNotInvoked();
2375          }
1833
2376          try {
2377              assertEquals(inc(v1), h2.join());
2378 <            assertEquals(1, r2.invocationCount);
2378 >            rs[2].assertValue(inc(v1));
2379          } catch (CompletionException ok) {
2380              checkCompletedWithWrappedCancellationException(h2);
2381 <            assertEquals(0, r2.invocationCount);
2381 >            rs[2].assertNotInvoked();
2382 >        }
2383 >        try {
2384 >            assertEquals(inc(v1), h3.join());
2385 >            rs[3].assertValue(inc(v1));
2386 >        } catch (CompletionException ok) {
2387 >            checkCompletedWithWrappedCancellationException(h3);
2388 >            rs[3].assertNotInvoked();
2389          }
2390  
1842        checkCancelled(g);
2391          checkCompletedNormally(f, v1);
2392 +        checkCancelled(g);
2393      }}
2394  
2395      /**
2396 <     * acceptEither result completes normally after normal completion
1848 <     * of either source
2396 >     * applyToEither result completes exceptionally if action does
2397       */
2398 <    public void testAcceptEither_normalCompletion1() {
2398 >    public void testApplyToEither_actionFailed() {
2399          for (ExecutionMode m : ExecutionMode.values())
2400          for (Integer v1 : new Integer[] { 1, null })
2401          for (Integer v2 : new Integer[] { 2, null })
2402      {
2403          final CompletableFuture<Integer> f = new CompletableFuture<>();
2404          final CompletableFuture<Integer> g = new CompletableFuture<>();
2405 <        final IncAction r = new IncAction();
2406 <        final CompletableFuture<Void> h = m.acceptEither(f, g, r);
2405 >        final FailingFunction[] rs = new FailingFunction[6];
2406 >        for (int i = 0; i < rs.length; i++) rs[i] = new FailingFunction(m);
2407  
2408 +        final CompletableFuture<Integer> h0 = m.applyToEither(f, g, rs[0]);
2409 +        final CompletableFuture<Integer> h1 = m.applyToEither(g, f, rs[1]);
2410          f.complete(v1);
2411 <        checkCompletedNormally(h, null);
2412 <        assertEquals(inc(v1), r.value);
2413 <        g.complete(v2);
2414 <
2415 <        checkCompletedNormally(f, v1);
2416 <        checkCompletedNormally(g, v2);
2417 <        checkCompletedNormally(h, null);
1868 <    }}
1869 <
1870 <    public void testAcceptEither_normalCompletion2() {
1871 <        for (ExecutionMode m : ExecutionMode.values())
1872 <        for (Integer v1 : new Integer[] { 1, null })
1873 <        for (Integer v2 : new Integer[] { 2, null })
1874 <    {
1875 <        final CompletableFuture<Integer> f = new CompletableFuture<>();
1876 <        final CompletableFuture<Integer> g = new CompletableFuture<>();
1877 <        final IncAction r = new IncAction();
1878 <        final CompletableFuture<Void> h = m.acceptEither(f, g, r);
2411 >        final CompletableFuture<Integer> h2 = m.applyToEither(f, g, rs[2]);
2412 >        final CompletableFuture<Integer> h3 = m.applyToEither(g, f, rs[3]);
2413 >        checkCompletedWithWrappedException(h0, rs[0].ex);
2414 >        checkCompletedWithWrappedException(h1, rs[1].ex);
2415 >        checkCompletedWithWrappedException(h2, rs[2].ex);
2416 >        checkCompletedWithWrappedException(h3, rs[3].ex);
2417 >        for (int i = 0; i < 4; i++) rs[i].assertValue(v1);
2418  
2419          g.complete(v2);
2420 <        checkCompletedNormally(h, null);
2421 <        assertEquals(inc(v2), r.value);
2422 <        f.complete(v1);
2420 >
2421 >        // unspecified behavior - both source completions available
2422 >        final CompletableFuture<Integer> h4 = m.applyToEither(f, g, rs[4]);
2423 >        final CompletableFuture<Integer> h5 = m.applyToEither(g, f, rs[5]);
2424 >
2425 >        checkCompletedWithWrappedException(h4, rs[4].ex);
2426 >        assertTrue(Objects.equals(v1, rs[4].value) ||
2427 >                   Objects.equals(v2, rs[4].value));
2428 >        checkCompletedWithWrappedException(h5, rs[5].ex);
2429 >        assertTrue(Objects.equals(v1, rs[5].value) ||
2430 >                   Objects.equals(v2, rs[5].value));
2431  
2432          checkCompletedNormally(f, v1);
2433          checkCompletedNormally(g, v2);
1887        checkCompletedNormally(h, null);
2434      }}
2435  
2436 <    public void testAcceptEither_normalCompletion3() {
2436 >    /**
2437 >     * acceptEither result completes normally after normal completion
2438 >     * of either source
2439 >     */
2440 >    public void testAcceptEither_normalCompletion() {
2441          for (ExecutionMode m : ExecutionMode.values())
2442          for (Integer v1 : new Integer[] { 1, null })
2443          for (Integer v2 : new Integer[] { 2, null })
2444      {
2445          final CompletableFuture<Integer> f = new CompletableFuture<>();
2446          final CompletableFuture<Integer> g = new CompletableFuture<>();
2447 <        final IncAction r = new IncAction();
2447 >        final NoopConsumer[] rs = new NoopConsumer[6];
2448 >        for (int i = 0; i < rs.length; i++) rs[i] = new NoopConsumer(m);
2449  
2450 +        final CompletableFuture<Void> h0 = m.acceptEither(f, g, rs[0]);
2451 +        final CompletableFuture<Void> h1 = m.acceptEither(g, f, rs[1]);
2452 +        checkIncomplete(h0);
2453 +        checkIncomplete(h1);
2454 +        rs[0].assertNotInvoked();
2455 +        rs[1].assertNotInvoked();
2456          f.complete(v1);
2457 +        checkCompletedNormally(h0, null);
2458 +        checkCompletedNormally(h1, null);
2459 +        rs[0].assertValue(v1);
2460 +        rs[1].assertValue(v1);
2461 +        final CompletableFuture<Void> h2 = m.acceptEither(f, g, rs[2]);
2462 +        final CompletableFuture<Void> h3 = m.acceptEither(g, f, rs[3]);
2463 +        checkCompletedNormally(h2, null);
2464 +        checkCompletedNormally(h3, null);
2465 +        rs[2].assertValue(v1);
2466 +        rs[3].assertValue(v1);
2467          g.complete(v2);
1901        final CompletableFuture<Void> h = m.acceptEither(f, g, r);
2468  
2469 <        checkCompletedNormally(h, null);
2469 >        // unspecified behavior - both source completions available
2470 >        final CompletableFuture<Void> h4 = m.acceptEither(f, g, rs[4]);
2471 >        final CompletableFuture<Void> h5 = m.acceptEither(g, f, rs[5]);
2472 >        checkCompletedNormally(h4, null);
2473 >        checkCompletedNormally(h5, null);
2474 >        assertTrue(Objects.equals(v1, rs[4].value) ||
2475 >                   Objects.equals(v2, rs[4].value));
2476 >        assertTrue(Objects.equals(v1, rs[5].value) ||
2477 >                   Objects.equals(v2, rs[5].value));
2478 >
2479          checkCompletedNormally(f, v1);
2480          checkCompletedNormally(g, v2);
2481 <
2482 <        // unspecified behavior
2483 <        assertTrue(Objects.equals(r.value, inc(v1)) ||
2484 <                   Objects.equals(r.value, inc(v2)));
2481 >        checkCompletedNormally(h0, null);
2482 >        checkCompletedNormally(h1, null);
2483 >        checkCompletedNormally(h2, null);
2484 >        checkCompletedNormally(h3, null);
2485 >        for (int i = 0; i < 4; i++) rs[i].assertValue(v1);
2486      }}
2487  
2488      /**
2489       * acceptEither result completes exceptionally after exceptional
2490       * completion of either source
2491       */
2492 <    public void testAcceptEither_exceptionalCompletion1() {
2492 >    public void testAcceptEither_exceptionalCompletion() {
2493          for (ExecutionMode m : ExecutionMode.values())
2494          for (Integer v1 : new Integer[] { 1, null })
2495      {
2496          final CompletableFuture<Integer> f = new CompletableFuture<>();
2497          final CompletableFuture<Integer> g = new CompletableFuture<>();
1922        final IncAction r = new IncAction();
1923        final CompletableFuture<Void> h = m.acceptEither(f, g, r);
2498          final CFException ex = new CFException();
2499 +        final NoopConsumer[] rs = new NoopConsumer[6];
2500 +        for (int i = 0; i < rs.length; i++) rs[i] = new NoopConsumer(m);
2501  
2502 +        final CompletableFuture<Void> h0 = m.acceptEither(f, g, rs[0]);
2503 +        final CompletableFuture<Void> h1 = m.acceptEither(g, f, rs[1]);
2504 +        checkIncomplete(h0);
2505 +        checkIncomplete(h1);
2506 +        rs[0].assertNotInvoked();
2507 +        rs[1].assertNotInvoked();
2508          f.completeExceptionally(ex);
2509 <        checkCompletedWithWrappedCFException(h, ex);
2509 >        checkCompletedWithWrappedException(h0, ex);
2510 >        checkCompletedWithWrappedException(h1, ex);
2511 >        final CompletableFuture<Void> h2 = m.acceptEither(f, g, rs[2]);
2512 >        final CompletableFuture<Void> h3 = m.acceptEither(g, f, rs[3]);
2513 >        checkCompletedWithWrappedException(h2, ex);
2514 >        checkCompletedWithWrappedException(h3, ex);
2515 >
2516          g.complete(v1);
2517  
2518 <        assertEquals(0, r.invocationCount);
2518 >        // unspecified behavior - both source completions available
2519 >        final CompletableFuture<Void> h4 = m.acceptEither(f, g, rs[4]);
2520 >        final CompletableFuture<Void> h5 = m.acceptEither(g, f, rs[5]);
2521 >        try {
2522 >            assertNull(h4.join());
2523 >            rs[4].assertValue(v1);
2524 >        } catch (CompletionException ok) {
2525 >            checkCompletedWithWrappedException(h4, ex);
2526 >            rs[4].assertNotInvoked();
2527 >        }
2528 >        try {
2529 >            assertNull(h5.join());
2530 >            rs[5].assertValue(v1);
2531 >        } catch (CompletionException ok) {
2532 >            checkCompletedWithWrappedException(h5, ex);
2533 >            rs[5].assertNotInvoked();
2534 >        }
2535 >
2536 >        checkCompletedExceptionally(f, ex);
2537          checkCompletedNormally(g, v1);
2538 <        checkCompletedWithWrappedCFException(f, ex);
2539 <        checkCompletedWithWrappedCFException(h, ex);
2538 >        checkCompletedWithWrappedException(h0, ex);
2539 >        checkCompletedWithWrappedException(h1, ex);
2540 >        checkCompletedWithWrappedException(h2, ex);
2541 >        checkCompletedWithWrappedException(h3, ex);
2542 >        checkCompletedWithWrappedException(h4, ex);
2543 >        for (int i = 0; i < 4; i++) rs[i].assertNotInvoked();
2544      }}
2545  
2546      public void testAcceptEither_exceptionalCompletion2() {
2547          for (ExecutionMode m : ExecutionMode.values())
2548 +        for (boolean fFirst : new boolean[] { true, false })
2549          for (Integer v1 : new Integer[] { 1, null })
2550      {
2551          final CompletableFuture<Integer> f = new CompletableFuture<>();
2552          final CompletableFuture<Integer> g = new CompletableFuture<>();
1942        final IncAction r = new IncAction();
1943        final CompletableFuture<Void> h = m.acceptEither(f, g, r);
1944        final CFException ex = new CFException();
1945
1946        g.completeExceptionally(ex);
1947        checkCompletedWithWrappedCFException(h, ex);
1948        f.complete(v1);
1949
1950        assertEquals(0, r.invocationCount);
1951        checkCompletedNormally(f, v1);
1952        checkCompletedWithWrappedCFException(g, ex);
1953        checkCompletedWithWrappedCFException(h, ex);
1954    }}
1955
1956    public void testAcceptEither_exceptionalCompletion3() {
1957        for (ExecutionMode m : ExecutionMode.values())
1958        for (Integer v1 : new Integer[] { 1, null })
1959    {
1960        final CompletableFuture<Integer> f = new CompletableFuture<>();
1961        final CompletableFuture<Integer> g = new CompletableFuture<>();
1962        final IncAction r = new IncAction();
2553          final CFException ex = new CFException();
2554 +        final NoopConsumer[] rs = new NoopConsumer[6];
2555 +        for (int i = 0; i < rs.length; i++) rs[i] = new NoopConsumer(m);
2556  
2557 <        g.completeExceptionally(ex);
2558 <        f.complete(v1);
2559 <        final CompletableFuture<Void> h = m.acceptEither(f, g, r);
2557 >        final CompletableFuture<Void> h0 = m.acceptEither(f, g, rs[0]);
2558 >        final CompletableFuture<Void> h1 = m.acceptEither(g, f, rs[1]);
2559 >        assertTrue(fFirst ? f.complete(v1) : g.completeExceptionally(ex));
2560 >        assertTrue(!fFirst ? f.complete(v1) : g.completeExceptionally(ex));
2561 >        final CompletableFuture<Void> h2 = m.acceptEither(f, g, rs[2]);
2562 >        final CompletableFuture<Void> h3 = m.acceptEither(g, f, rs[3]);
2563  
2564 <        // unspecified behavior
1970 <        Integer v;
2564 >        // unspecified behavior - both source completions available
2565          try {
2566 <            assertNull(h.join());
2567 <            assertEquals(1, r.invocationCount);
1974 <            assertEquals(inc(v1), r.value);
2566 >            assertEquals(null, h0.join());
2567 >            rs[0].assertValue(v1);
2568          } catch (CompletionException ok) {
2569 <            checkCompletedWithWrappedCFException(h, ex);
2570 <            assertEquals(0, r.invocationCount);
2569 >            checkCompletedWithWrappedException(h0, ex);
2570 >            rs[0].assertNotInvoked();
2571          }
1979
1980        checkCompletedWithWrappedCFException(g, ex);
1981        checkCompletedNormally(f, v1);
1982    }}
1983
1984    public void testAcceptEither_exceptionalCompletion4() {
1985        for (ExecutionMode m : ExecutionMode.values())
1986        for (Integer v1 : new Integer[] { 1, null })
1987    {
1988        final CompletableFuture<Integer> f = new CompletableFuture<>();
1989        final CompletableFuture<Integer> g = new CompletableFuture<>();
1990        final IncAction r = new IncAction();
1991        final CFException ex = new CFException();
1992
1993        f.completeExceptionally(ex);
1994        g.complete(v1);
1995        final CompletableFuture<Void> h = m.acceptEither(f, g, r);
1996
1997        // unspecified behavior
1998        Integer v;
2572          try {
2573 <            assertNull(h.join());
2574 <            assertEquals(1, r.invocationCount);
2002 <            assertEquals(inc(v1), r.value);
2573 >            assertEquals(null, h1.join());
2574 >            rs[1].assertValue(v1);
2575          } catch (CompletionException ok) {
2576 <            checkCompletedWithWrappedCFException(h, ex);
2577 <            assertEquals(0, r.invocationCount);
2576 >            checkCompletedWithWrappedException(h1, ex);
2577 >            rs[1].assertNotInvoked();
2578 >        }
2579 >        try {
2580 >            assertEquals(null, h2.join());
2581 >            rs[2].assertValue(v1);
2582 >        } catch (CompletionException ok) {
2583 >            checkCompletedWithWrappedException(h2, ex);
2584 >            rs[2].assertNotInvoked();
2585 >        }
2586 >        try {
2587 >            assertEquals(null, h3.join());
2588 >            rs[3].assertValue(v1);
2589 >        } catch (CompletionException ok) {
2590 >            checkCompletedWithWrappedException(h3, ex);
2591 >            rs[3].assertNotInvoked();
2592          }
2593  
2008        checkCompletedWithWrappedCFException(f, ex);
2009        checkCompletedNormally(g, v1);
2010    }}
2011
2012    /**
2013     * acceptEither result completes exceptionally if action does
2014     */
2015    public void testAcceptEither_actionFailed1() {
2016        for (ExecutionMode m : ExecutionMode.values())
2017        for (Integer v1 : new Integer[] { 1, null })
2018        for (Integer v2 : new Integer[] { 2, null })
2019    {
2020        final CompletableFuture<Integer> f = new CompletableFuture<>();
2021        final CompletableFuture<Integer> g = new CompletableFuture<>();
2022        final FailingConsumer r = new FailingConsumer();
2023        final CompletableFuture<Void> h = m.acceptEither(f, g, r);
2024
2025        f.complete(v1);
2026        checkCompletedWithWrappedCFException(h);
2027        g.complete(v2);
2028        checkCompletedNormally(f, v1);
2029        checkCompletedNormally(g, v2);
2030    }}
2031
2032    public void testAcceptEither_actionFailed2() {
2033        for (ExecutionMode m : ExecutionMode.values())
2034        for (Integer v1 : new Integer[] { 1, null })
2035        for (Integer v2 : new Integer[] { 2, null })
2036    {
2037        final CompletableFuture<Integer> f = new CompletableFuture<>();
2038        final CompletableFuture<Integer> g = new CompletableFuture<>();
2039        final FailingConsumer r = new FailingConsumer();
2040        final CompletableFuture<Void> h = m.acceptEither(f, g, r);
2041
2042        g.complete(v2);
2043        checkCompletedWithWrappedCFException(h);
2044        f.complete(v1);
2594          checkCompletedNormally(f, v1);
2595 <        checkCompletedNormally(g, v2);
2595 >        checkCompletedExceptionally(g, ex);
2596      }}
2597  
2598      /**
2599       * acceptEither result completes exceptionally if either source cancelled
2600       */
2601 <    public void testAcceptEither_sourceCancelled1() {
2601 >    public void testAcceptEither_sourceCancelled() {
2602          for (ExecutionMode m : ExecutionMode.values())
2603          for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2604          for (Integer v1 : new Integer[] { 1, null })
2605      {
2606          final CompletableFuture<Integer> f = new CompletableFuture<>();
2607          final CompletableFuture<Integer> g = new CompletableFuture<>();
2608 <        final IncAction r = new IncAction();
2609 <        final CompletableFuture<Void> h = m.acceptEither(f, g, r);
2061 <
2062 <        assertTrue(f.cancel(mayInterruptIfRunning));
2063 <        checkCompletedWithWrappedCancellationException(h);
2064 <        g.complete(v1);
2065 <
2066 <        checkCancelled(f);
2067 <        assertEquals(0, r.invocationCount);
2068 <        checkCompletedNormally(g, v1);
2069 <        checkCompletedWithWrappedCancellationException(h);
2070 <    }}
2071 <
2072 <    public void testAcceptEither_sourceCancelled2() {
2073 <        for (ExecutionMode m : ExecutionMode.values())
2074 <        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2075 <        for (Integer v1 : new Integer[] { 1, null })
2076 <    {
2077 <        final CompletableFuture<Integer> f = new CompletableFuture<>();
2078 <        final CompletableFuture<Integer> g = new CompletableFuture<>();
2079 <        final IncAction r = new IncAction();
2080 <        final CompletableFuture<Void> h = m.acceptEither(f, g, r);
2081 <
2082 <        assertTrue(g.cancel(mayInterruptIfRunning));
2083 <        checkCompletedWithWrappedCancellationException(h);
2084 <        f.complete(v1);
2085 <
2086 <        checkCancelled(g);
2087 <        assertEquals(0, r.invocationCount);
2088 <        checkCompletedNormally(f, v1);
2089 <        checkCompletedWithWrappedCancellationException(h);
2090 <    }}
2608 >        final NoopConsumer[] rs = new NoopConsumer[6];
2609 >        for (int i = 0; i < rs.length; i++) rs[i] = new NoopConsumer(m);
2610  
2611 <    public void testAcceptEither_sourceCancelled3() {
2612 <        for (ExecutionMode m : ExecutionMode.values())
2613 <        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2614 <        for (Integer v1 : new Integer[] { 1, null })
2615 <    {
2616 <        final CompletableFuture<Integer> f = new CompletableFuture<>();
2617 <        final CompletableFuture<Integer> g = new CompletableFuture<>();
2618 <        final IncAction r = new IncAction();
2611 >        final CompletableFuture<Void> h0 = m.acceptEither(f, g, rs[0]);
2612 >        final CompletableFuture<Void> h1 = m.acceptEither(g, f, rs[1]);
2613 >        checkIncomplete(h0);
2614 >        checkIncomplete(h1);
2615 >        rs[0].assertNotInvoked();
2616 >        rs[1].assertNotInvoked();
2617 >        f.cancel(mayInterruptIfRunning);
2618 >        checkCompletedWithWrappedCancellationException(h0);
2619 >        checkCompletedWithWrappedCancellationException(h1);
2620 >        final CompletableFuture<Void> h2 = m.acceptEither(f, g, rs[2]);
2621 >        final CompletableFuture<Void> h3 = m.acceptEither(g, f, rs[3]);
2622 >        checkCompletedWithWrappedCancellationException(h2);
2623 >        checkCompletedWithWrappedCancellationException(h3);
2624  
2625 <        assertTrue(g.cancel(mayInterruptIfRunning));
2102 <        f.complete(v1);
2103 <        final CompletableFuture<Void> h = m.acceptEither(f, g, r);
2625 >        g.complete(v1);
2626  
2627 <        // unspecified behavior
2628 <        Integer v;
2627 >        // unspecified behavior - both source completions available
2628 >        final CompletableFuture<Void> h4 = m.acceptEither(f, g, rs[4]);
2629 >        final CompletableFuture<Void> h5 = m.acceptEither(g, f, rs[5]);
2630          try {
2631 <            assertNull(h.join());
2632 <            assertEquals(1, r.invocationCount);
2110 <            assertEquals(inc(v1), r.value);
2631 >            assertNull(h4.join());
2632 >            rs[4].assertValue(v1);
2633          } catch (CompletionException ok) {
2634 <            checkCompletedWithWrappedCancellationException(h);
2635 <            assertEquals(0, r.invocationCount);
2634 >            checkCompletedWithWrappedCancellationException(h4);
2635 >            rs[4].assertNotInvoked();
2636          }
2115
2116        checkCancelled(g);
2117        checkCompletedNormally(f, v1);
2118    }}
2119
2120    public void testAcceptEither_sourceCancelled4() {
2121        for (ExecutionMode m : ExecutionMode.values())
2122        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2123        for (Integer v1 : new Integer[] { 1, null })
2124    {
2125        final CompletableFuture<Integer> f = new CompletableFuture<>();
2126        final CompletableFuture<Integer> g = new CompletableFuture<>();
2127        final IncAction r = new IncAction();
2128
2129        assertTrue(f.cancel(mayInterruptIfRunning));
2130        g.complete(v1);
2131        final CompletableFuture<Void> h = m.acceptEither(f, g, r);
2132
2133        // unspecified behavior
2134        Integer v;
2637          try {
2638 <            assertNull(h.join());
2639 <            assertEquals(1, r.invocationCount);
2138 <            assertEquals(inc(v1), r.value);
2638 >            assertNull(h5.join());
2639 >            rs[5].assertValue(v1);
2640          } catch (CompletionException ok) {
2641 <            checkCompletedWithWrappedCancellationException(h);
2642 <            assertEquals(0, r.invocationCount);
2641 >            checkCompletedWithWrappedCancellationException(h5);
2642 >            rs[5].assertNotInvoked();
2643          }
2644  
2645          checkCancelled(f);
2646          checkCompletedNormally(g, v1);
2647 +        checkCompletedWithWrappedCancellationException(h0);
2648 +        checkCompletedWithWrappedCancellationException(h1);
2649 +        checkCompletedWithWrappedCancellationException(h2);
2650 +        checkCompletedWithWrappedCancellationException(h3);
2651 +        for (int i = 0; i < 4; i++) rs[i].assertNotInvoked();
2652      }}
2653  
2654      /**
2655 <     * runAfterEither result completes normally after normal completion
2150 <     * of either source
2655 >     * acceptEither result completes exceptionally if action does
2656       */
2657 <    public void testRunAfterEither_normalCompletion1() {
2657 >    public void testAcceptEither_actionFailed() {
2658          for (ExecutionMode m : ExecutionMode.values())
2659          for (Integer v1 : new Integer[] { 1, null })
2660          for (Integer v2 : new Integer[] { 2, null })
2661      {
2662          final CompletableFuture<Integer> f = new CompletableFuture<>();
2663          final CompletableFuture<Integer> g = new CompletableFuture<>();
2664 <        final Noop r = new Noop(m);
2665 <        final CompletableFuture<Void> h = m.runAfterEither(f, g, r);
2664 >        final FailingConsumer[] rs = new FailingConsumer[6];
2665 >        for (int i = 0; i < rs.length; i++) rs[i] = new FailingConsumer(m);
2666  
2667 +        final CompletableFuture<Void> h0 = m.acceptEither(f, g, rs[0]);
2668 +        final CompletableFuture<Void> h1 = m.acceptEither(g, f, rs[1]);
2669          f.complete(v1);
2670 <        checkCompletedNormally(h, null);
2671 <        assertEquals(1, r.invocationCount);
2670 >        final CompletableFuture<Void> h2 = m.acceptEither(f, g, rs[2]);
2671 >        final CompletableFuture<Void> h3 = m.acceptEither(g, f, rs[3]);
2672 >        checkCompletedWithWrappedException(h0, rs[0].ex);
2673 >        checkCompletedWithWrappedException(h1, rs[1].ex);
2674 >        checkCompletedWithWrappedException(h2, rs[2].ex);
2675 >        checkCompletedWithWrappedException(h3, rs[3].ex);
2676 >        for (int i = 0; i < 4; i++) rs[i].assertValue(v1);
2677 >
2678          g.complete(v2);
2679  
2680 +        // unspecified behavior - both source completions available
2681 +        final CompletableFuture<Void> h4 = m.acceptEither(f, g, rs[4]);
2682 +        final CompletableFuture<Void> h5 = m.acceptEither(g, f, rs[5]);
2683 +
2684 +        checkCompletedWithWrappedException(h4, rs[4].ex);
2685 +        assertTrue(Objects.equals(v1, rs[4].value) ||
2686 +                   Objects.equals(v2, rs[4].value));
2687 +        checkCompletedWithWrappedException(h5, rs[5].ex);
2688 +        assertTrue(Objects.equals(v1, rs[5].value) ||
2689 +                   Objects.equals(v2, rs[5].value));
2690 +
2691          checkCompletedNormally(f, v1);
2692          checkCompletedNormally(g, v2);
2169        checkCompletedNormally(h, null);
2170        assertEquals(1, r.invocationCount);
2693      }}
2694  
2695 <    public void testRunAfterEither_normalCompletion2() {
2695 >    /**
2696 >     * runAfterEither result completes normally after normal completion
2697 >     * of either source
2698 >     */
2699 >    public void testRunAfterEither_normalCompletion() {
2700          for (ExecutionMode m : ExecutionMode.values())
2701          for (Integer v1 : new Integer[] { 1, null })
2702          for (Integer v2 : new Integer[] { 2, null })
2703      {
2704          final CompletableFuture<Integer> f = new CompletableFuture<>();
2705          final CompletableFuture<Integer> g = new CompletableFuture<>();
2706 <        final Noop r = new Noop(m);
2707 <        final CompletableFuture<Void> h = m.runAfterEither(f, g, r);
2706 >        final Noop[] rs = new Noop[6];
2707 >        for (int i = 0; i < rs.length; i++) rs[i] = new Noop(m);
2708  
2709 <        g.complete(v2);
2710 <        checkCompletedNormally(h, null);
2711 <        assertEquals(1, r.invocationCount);
2709 >        final CompletableFuture<Void> h0 = m.runAfterEither(f, g, rs[0]);
2710 >        final CompletableFuture<Void> h1 = m.runAfterEither(g, f, rs[1]);
2711 >        checkIncomplete(h0);
2712 >        checkIncomplete(h1);
2713 >        rs[0].assertNotInvoked();
2714 >        rs[1].assertNotInvoked();
2715          f.complete(v1);
2716 +        checkCompletedNormally(h0, null);
2717 +        checkCompletedNormally(h1, null);
2718 +        rs[0].assertInvoked();
2719 +        rs[1].assertInvoked();
2720 +        final CompletableFuture<Void> h2 = m.runAfterEither(f, g, rs[2]);
2721 +        final CompletableFuture<Void> h3 = m.runAfterEither(g, f, rs[3]);
2722 +        checkCompletedNormally(h2, null);
2723 +        checkCompletedNormally(h3, null);
2724 +        rs[2].assertInvoked();
2725 +        rs[3].assertInvoked();
2726  
2188        checkCompletedNormally(f, v1);
2189        checkCompletedNormally(g, v2);
2190        checkCompletedNormally(h, null);
2191        assertEquals(1, r.invocationCount);
2192        }}
2193
2194    public void testRunAfterEither_normalCompletion3() {
2195        for (ExecutionMode m : ExecutionMode.values())
2196        for (Integer v1 : new Integer[] { 1, null })
2197        for (Integer v2 : new Integer[] { 2, null })
2198    {
2199        final CompletableFuture<Integer> f = new CompletableFuture<>();
2200        final CompletableFuture<Integer> g = new CompletableFuture<>();
2201        final Noop r = new Noop(m);
2202
2203        f.complete(v1);
2727          g.complete(v2);
2205        final CompletableFuture<Void> h = m.runAfterEither(f, g, r);
2728  
2729 <        checkCompletedNormally(h, null);
2729 >        final CompletableFuture<Void> h4 = m.runAfterEither(f, g, rs[4]);
2730 >        final CompletableFuture<Void> h5 = m.runAfterEither(g, f, rs[5]);
2731 >
2732          checkCompletedNormally(f, v1);
2733          checkCompletedNormally(g, v2);
2734 <        assertEquals(1, r.invocationCount);
2734 >        checkCompletedNormally(h0, null);
2735 >        checkCompletedNormally(h1, null);
2736 >        checkCompletedNormally(h2, null);
2737 >        checkCompletedNormally(h3, null);
2738 >        checkCompletedNormally(h4, null);
2739 >        checkCompletedNormally(h5, null);
2740 >        for (int i = 0; i < 6; i++) rs[i].assertInvoked();
2741      }}
2742  
2743      /**
2744       * runAfterEither result completes exceptionally after exceptional
2745       * completion of either source
2746       */
2747 <    public void testRunAfterEither_exceptionalCompletion1() {
2747 >    public void testRunAfterEither_exceptionalCompletion() {
2748          for (ExecutionMode m : ExecutionMode.values())
2749          for (Integer v1 : new Integer[] { 1, null })
2750      {
2751          final CompletableFuture<Integer> f = new CompletableFuture<>();
2752          final CompletableFuture<Integer> g = new CompletableFuture<>();
2223        final Noop r = new Noop(m);
2224        final CompletableFuture<Void> h = m.runAfterEither(f, g, r);
2753          final CFException ex = new CFException();
2754 +        final Noop[] rs = new Noop[6];
2755 +        for (int i = 0; i < rs.length; i++) rs[i] = new Noop(m);
2756  
2757 <        f.completeExceptionally(ex);
2758 <        checkCompletedWithWrappedCFException(h, ex);
2759 <        g.complete(v1);
2757 >        final CompletableFuture<Void> h0 = m.runAfterEither(f, g, rs[0]);
2758 >        final CompletableFuture<Void> h1 = m.runAfterEither(g, f, rs[1]);
2759 >        checkIncomplete(h0);
2760 >        checkIncomplete(h1);
2761 >        rs[0].assertNotInvoked();
2762 >        rs[1].assertNotInvoked();
2763 >        assertTrue(f.completeExceptionally(ex));
2764 >        checkCompletedWithWrappedException(h0, ex);
2765 >        checkCompletedWithWrappedException(h1, ex);
2766 >        final CompletableFuture<Void> h2 = m.runAfterEither(f, g, rs[2]);
2767 >        final CompletableFuture<Void> h3 = m.runAfterEither(g, f, rs[3]);
2768 >        checkCompletedWithWrappedException(h2, ex);
2769 >        checkCompletedWithWrappedException(h3, ex);
2770 >
2771 >        assertTrue(g.complete(v1));
2772 >
2773 >        // unspecified behavior - both source completions available
2774 >        final CompletableFuture<Void> h4 = m.runAfterEither(f, g, rs[4]);
2775 >        final CompletableFuture<Void> h5 = m.runAfterEither(g, f, rs[5]);
2776 >        try {
2777 >            assertNull(h4.join());
2778 >            rs[4].assertInvoked();
2779 >        } catch (CompletionException ok) {
2780 >            checkCompletedWithWrappedException(h4, ex);
2781 >            rs[4].assertNotInvoked();
2782 >        }
2783 >        try {
2784 >            assertNull(h5.join());
2785 >            rs[5].assertInvoked();
2786 >        } catch (CompletionException ok) {
2787 >            checkCompletedWithWrappedException(h5, ex);
2788 >            rs[5].assertNotInvoked();
2789 >        }
2790  
2791 <        assertEquals(0, r.invocationCount);
2791 >        checkCompletedExceptionally(f, ex);
2792          checkCompletedNormally(g, v1);
2793 <        checkCompletedWithWrappedCFException(f, ex);
2794 <        checkCompletedWithWrappedCFException(h, ex);
2793 >        checkCompletedWithWrappedException(h0, ex);
2794 >        checkCompletedWithWrappedException(h1, ex);
2795 >        checkCompletedWithWrappedException(h2, ex);
2796 >        checkCompletedWithWrappedException(h3, ex);
2797 >        checkCompletedWithWrappedException(h4, ex);
2798 >        for (int i = 0; i < 4; i++) rs[i].assertNotInvoked();
2799      }}
2800  
2801      public void testRunAfterEither_exceptionalCompletion2() {
2802          for (ExecutionMode m : ExecutionMode.values())
2803 +        for (boolean fFirst : new boolean[] { true, false })
2804          for (Integer v1 : new Integer[] { 1, null })
2805      {
2806          final CompletableFuture<Integer> f = new CompletableFuture<>();
2807          final CompletableFuture<Integer> g = new CompletableFuture<>();
2243        final Noop r = new Noop(m);
2244        final CompletableFuture<Void> h = m.runAfterEither(f, g, r);
2245        final CFException ex = new CFException();
2246
2247        g.completeExceptionally(ex);
2248        checkCompletedWithWrappedCFException(h, ex);
2249        f.complete(v1);
2250
2251        assertEquals(0, r.invocationCount);
2252        checkCompletedNormally(f, v1);
2253        checkCompletedWithWrappedCFException(g, ex);
2254        checkCompletedWithWrappedCFException(h, ex);
2255    }}
2256
2257    public void testRunAfterEither_exceptionalCompletion3() {
2258        for (ExecutionMode m : ExecutionMode.values())
2259        for (Integer v1 : new Integer[] { 1, null })
2260    {
2261        final CompletableFuture<Integer> f = new CompletableFuture<>();
2262        final CompletableFuture<Integer> g = new CompletableFuture<>();
2263        final Noop r = new Noop(m);
2808          final CFException ex = new CFException();
2809 +        final Noop[] rs = new Noop[6];
2810 +        for (int i = 0; i < rs.length; i++) rs[i] = new Noop(m);
2811  
2812 <        g.completeExceptionally(ex);
2813 <        f.complete(v1);
2814 <        final CompletableFuture<Void> h = m.runAfterEither(f, g, r);
2812 >        final CompletableFuture<Void> h0 = m.runAfterEither(f, g, rs[0]);
2813 >        final CompletableFuture<Void> h1 = m.runAfterEither(g, f, rs[1]);
2814 >        assertTrue( fFirst ? f.complete(v1) : g.completeExceptionally(ex));
2815 >        assertTrue(!fFirst ? f.complete(v1) : g.completeExceptionally(ex));
2816 >        final CompletableFuture<Void> h2 = m.runAfterEither(f, g, rs[2]);
2817 >        final CompletableFuture<Void> h3 = m.runAfterEither(g, f, rs[3]);
2818  
2819 <        // unspecified behavior
2271 <        Integer v;
2819 >        // unspecified behavior - both source completions available
2820          try {
2821 <            assertNull(h.join());
2822 <            assertEquals(1, r.invocationCount);
2821 >            assertEquals(null, h0.join());
2822 >            rs[0].assertInvoked();
2823          } catch (CompletionException ok) {
2824 <            checkCompletedWithWrappedCFException(h, ex);
2825 <            assertEquals(0, r.invocationCount);
2824 >            checkCompletedWithWrappedException(h0, ex);
2825 >            rs[0].assertNotInvoked();
2826          }
2279
2280        checkCompletedWithWrappedCFException(g, ex);
2281        checkCompletedNormally(f, v1);
2282    }}
2283
2284    public void testRunAfterEither_exceptionalCompletion4() {
2285        for (ExecutionMode m : ExecutionMode.values())
2286        for (Integer v1 : new Integer[] { 1, null })
2287    {
2288        final CompletableFuture<Integer> f = new CompletableFuture<>();
2289        final CompletableFuture<Integer> g = new CompletableFuture<>();
2290        final Noop r = new Noop(m);
2291        final CFException ex = new CFException();
2292
2293        f.completeExceptionally(ex);
2294        g.complete(v1);
2295        final CompletableFuture<Void> h = m.runAfterEither(f, g, r);
2296
2297        // unspecified behavior
2298        Integer v;
2827          try {
2828 <            assertNull(h.join());
2829 <            assertEquals(1, r.invocationCount);
2828 >            assertEquals(null, h1.join());
2829 >            rs[1].assertInvoked();
2830          } catch (CompletionException ok) {
2831 <            checkCompletedWithWrappedCFException(h, ex);
2832 <            assertEquals(0, r.invocationCount);
2831 >            checkCompletedWithWrappedException(h1, ex);
2832 >            rs[1].assertNotInvoked();
2833 >        }
2834 >        try {
2835 >            assertEquals(null, h2.join());
2836 >            rs[2].assertInvoked();
2837 >        } catch (CompletionException ok) {
2838 >            checkCompletedWithWrappedException(h2, ex);
2839 >            rs[2].assertNotInvoked();
2840 >        }
2841 >        try {
2842 >            assertEquals(null, h3.join());
2843 >            rs[3].assertInvoked();
2844 >        } catch (CompletionException ok) {
2845 >            checkCompletedWithWrappedException(h3, ex);
2846 >            rs[3].assertNotInvoked();
2847          }
2848  
2307        checkCompletedWithWrappedCFException(f, ex);
2308        checkCompletedNormally(g, v1);
2309    }}
2310
2311    /**
2312     * runAfterEither result completes exceptionally if action does
2313     */
2314    public void testRunAfterEither_actionFailed1() {
2315        for (ExecutionMode m : ExecutionMode.values())
2316        for (Integer v1 : new Integer[] { 1, null })
2317        for (Integer v2 : new Integer[] { 2, null })
2318    {
2319        final CompletableFuture<Integer> f = new CompletableFuture<>();
2320        final CompletableFuture<Integer> g = new CompletableFuture<>();
2321        final FailingRunnable r = new FailingRunnable();
2322        final CompletableFuture<Void> h = m.runAfterEither(f, g, r);
2323
2324        f.complete(v1);
2325        checkCompletedWithWrappedCFException(h);
2326        g.complete(v2);
2327        checkCompletedNormally(f, v1);
2328        checkCompletedNormally(g, v2);
2329    }}
2330
2331    public void testRunAfterEither_actionFailed2() {
2332        for (ExecutionMode m : ExecutionMode.values())
2333        for (Integer v1 : new Integer[] { 1, null })
2334        for (Integer v2 : new Integer[] { 2, null })
2335    {
2336        final CompletableFuture<Integer> f = new CompletableFuture<>();
2337        final CompletableFuture<Integer> g = new CompletableFuture<>();
2338        final FailingRunnable r = new FailingRunnable();
2339        final CompletableFuture<Void> h = m.runAfterEither(f, g, r);
2340
2341        g.complete(v2);
2342        checkCompletedWithWrappedCFException(h);
2343        f.complete(v1);
2849          checkCompletedNormally(f, v1);
2850 <        checkCompletedNormally(g, v2);
2850 >        checkCompletedExceptionally(g, ex);
2851      }}
2852  
2853      /**
2854       * runAfterEither result completes exceptionally if either source cancelled
2855       */
2856 <    public void testRunAfterEither_sourceCancelled1() {
2352 <        for (ExecutionMode m : ExecutionMode.values())
2353 <        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2354 <        for (Integer v1 : new Integer[] { 1, null })
2355 <    {
2356 <        final CompletableFuture<Integer> f = new CompletableFuture<>();
2357 <        final CompletableFuture<Integer> g = new CompletableFuture<>();
2358 <        final Noop r = new Noop(m);
2359 <        final CompletableFuture<Void> h = m.runAfterEither(f, g, r);
2360 <
2361 <        assertTrue(f.cancel(mayInterruptIfRunning));
2362 <        checkCompletedWithWrappedCancellationException(h);
2363 <        g.complete(v1);
2364 <
2365 <        checkCancelled(f);
2366 <        assertEquals(0, r.invocationCount);
2367 <        checkCompletedNormally(g, v1);
2368 <        checkCompletedWithWrappedCancellationException(h);
2369 <    }}
2370 <
2371 <    public void testRunAfterEither_sourceCancelled2() {
2856 >    public void testRunAfterEither_sourceCancelled() {
2857          for (ExecutionMode m : ExecutionMode.values())
2858          for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2859          for (Integer v1 : new Integer[] { 1, null })
2860      {
2861          final CompletableFuture<Integer> f = new CompletableFuture<>();
2862          final CompletableFuture<Integer> g = new CompletableFuture<>();
2863 <        final Noop r = new Noop(m);
2864 <        final CompletableFuture<Void> h = m.runAfterEither(f, g, r);
2380 <
2381 <        assertTrue(g.cancel(mayInterruptIfRunning));
2382 <        checkCompletedWithWrappedCancellationException(h);
2383 <        f.complete(v1);
2863 >        final Noop[] rs = new Noop[6];
2864 >        for (int i = 0; i < rs.length; i++) rs[i] = new Noop(m);
2865  
2866 <        checkCancelled(g);
2867 <        assertEquals(0, r.invocationCount);
2868 <        checkCompletedNormally(f, v1);
2869 <        checkCompletedWithWrappedCancellationException(h);
2870 <    }}
2871 <
2872 <    public void testRunAfterEither_sourceCancelled3() {
2873 <        for (ExecutionMode m : ExecutionMode.values())
2874 <        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2875 <        for (Integer v1 : new Integer[] { 1, null })
2876 <    {
2877 <        final CompletableFuture<Integer> f = new CompletableFuture<>();
2878 <        final CompletableFuture<Integer> g = new CompletableFuture<>();
2879 <        final Noop r = new Noop(m);
2880 <
2881 <        assertTrue(g.cancel(mayInterruptIfRunning));
2882 <        f.complete(v1);
2883 <        final CompletableFuture<Void> h = m.runAfterEither(f, g, r);
2884 <
2885 <        // unspecified behavior
2886 <        Integer v;
2866 >        final CompletableFuture<Void> h0 = m.runAfterEither(f, g, rs[0]);
2867 >        final CompletableFuture<Void> h1 = m.runAfterEither(g, f, rs[1]);
2868 >        checkIncomplete(h0);
2869 >        checkIncomplete(h1);
2870 >        rs[0].assertNotInvoked();
2871 >        rs[1].assertNotInvoked();
2872 >        f.cancel(mayInterruptIfRunning);
2873 >        checkCompletedWithWrappedCancellationException(h0);
2874 >        checkCompletedWithWrappedCancellationException(h1);
2875 >        final CompletableFuture<Void> h2 = m.runAfterEither(f, g, rs[2]);
2876 >        final CompletableFuture<Void> h3 = m.runAfterEither(g, f, rs[3]);
2877 >        checkCompletedWithWrappedCancellationException(h2);
2878 >        checkCompletedWithWrappedCancellationException(h3);
2879 >
2880 >        assertTrue(g.complete(v1));
2881 >
2882 >        // unspecified behavior - both source completions available
2883 >        final CompletableFuture<Void> h4 = m.runAfterEither(f, g, rs[4]);
2884 >        final CompletableFuture<Void> h5 = m.runAfterEither(g, f, rs[5]);
2885 >        try {
2886 >            assertNull(h4.join());
2887 >            rs[4].assertInvoked();
2888 >        } catch (CompletionException ok) {
2889 >            checkCompletedWithWrappedCancellationException(h4);
2890 >            rs[4].assertNotInvoked();
2891 >        }
2892          try {
2893 <            assertNull(h.join());
2894 <            assertEquals(1, r.invocationCount);
2893 >            assertNull(h5.join());
2894 >            rs[5].assertInvoked();
2895          } catch (CompletionException ok) {
2896 <            checkCompletedWithWrappedCancellationException(h);
2897 <            assertEquals(0, r.invocationCount);
2896 >            checkCompletedWithWrappedCancellationException(h5);
2897 >            rs[5].assertNotInvoked();
2898          }
2899  
2900 <        checkCancelled(g);
2901 <        checkCompletedNormally(f, v1);
2900 >        checkCancelled(f);
2901 >        checkCompletedNormally(g, v1);
2902 >        checkCompletedWithWrappedCancellationException(h0);
2903 >        checkCompletedWithWrappedCancellationException(h1);
2904 >        checkCompletedWithWrappedCancellationException(h2);
2905 >        checkCompletedWithWrappedCancellationException(h3);
2906 >        for (int i = 0; i < 4; i++) rs[i].assertNotInvoked();
2907      }}
2908  
2909 <    public void testRunAfterEither_sourceCancelled4() {
2909 >    /**
2910 >     * runAfterEither result completes exceptionally if action does
2911 >     */
2912 >    public void testRunAfterEither_actionFailed() {
2913          for (ExecutionMode m : ExecutionMode.values())
2420        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
2914          for (Integer v1 : new Integer[] { 1, null })
2915 +        for (Integer v2 : new Integer[] { 2, null })
2916      {
2917          final CompletableFuture<Integer> f = new CompletableFuture<>();
2918          final CompletableFuture<Integer> g = new CompletableFuture<>();
2919 <        final Noop r = new Noop(m);
2919 >        final FailingRunnable[] rs = new FailingRunnable[6];
2920 >        for (int i = 0; i < rs.length; i++) rs[i] = new FailingRunnable(m);
2921  
2922 <        assertTrue(f.cancel(mayInterruptIfRunning));
2923 <        g.complete(v1);
2924 <        final CompletableFuture<Void> h = m.runAfterEither(f, g, r);
2925 <
2926 <        // unspecified behavior
2927 <        Integer v;
2928 <        try {
2929 <            assertNull(h.join());
2930 <            assertEquals(1, r.invocationCount);
2931 <        } catch (CompletionException ok) {
2932 <            checkCompletedWithWrappedCancellationException(h);
2933 <            assertEquals(0, r.invocationCount);
2934 <        }
2922 >        final CompletableFuture<Void> h0 = m.runAfterEither(f, g, rs[0]);
2923 >        final CompletableFuture<Void> h1 = m.runAfterEither(g, f, rs[1]);
2924 >        assertTrue(f.complete(v1));
2925 >        final CompletableFuture<Void> h2 = m.runAfterEither(f, g, rs[2]);
2926 >        final CompletableFuture<Void> h3 = m.runAfterEither(g, f, rs[3]);
2927 >        checkCompletedWithWrappedException(h0, rs[0].ex);
2928 >        checkCompletedWithWrappedException(h1, rs[1].ex);
2929 >        checkCompletedWithWrappedException(h2, rs[2].ex);
2930 >        checkCompletedWithWrappedException(h3, rs[3].ex);
2931 >        for (int i = 0; i < 4; i++) rs[i].assertInvoked();
2932 >        assertTrue(g.complete(v2));
2933 >        final CompletableFuture<Void> h4 = m.runAfterEither(f, g, rs[4]);
2934 >        final CompletableFuture<Void> h5 = m.runAfterEither(g, f, rs[5]);
2935 >        checkCompletedWithWrappedException(h4, rs[4].ex);
2936 >        checkCompletedWithWrappedException(h5, rs[5].ex);
2937  
2938 <        checkCancelled(f);
2939 <        checkCompletedNormally(g, v1);
2938 >        checkCompletedNormally(f, v1);
2939 >        checkCompletedNormally(g, v2);
2940 >        for (int i = 0; i < 6; i++) rs[i].assertInvoked();
2941      }}
2942  
2943      /**
# Line 2451 | Line 2949 | public class CompletableFutureTest exten
2949          for (Integer v1 : new Integer[] { 1, null })
2950      {
2951          final CompletableFuture<Integer> f = new CompletableFuture<>();
2952 <        final CompletableFutureInc r = new CompletableFutureInc();
2953 <        if (!createIncomplete) f.complete(v1);
2954 <        final CompletableFuture<Integer> g = f.thenCompose(r);
2955 <        if (createIncomplete) f.complete(v1);
2952 >        final CompletableFutureInc r = new CompletableFutureInc(m);
2953 >        if (!createIncomplete) assertTrue(f.complete(v1));
2954 >        final CompletableFuture<Integer> g = m.thenCompose(f, r);
2955 >        if (createIncomplete) assertTrue(f.complete(v1));
2956  
2957          checkCompletedNormally(g, inc(v1));
2958          checkCompletedNormally(f, v1);
2959 <        assertEquals(1, r.invocationCount);
2959 >        r.assertValue(v1);
2960      }}
2961  
2962      /**
# Line 2470 | Line 2968 | public class CompletableFutureTest exten
2968          for (boolean createIncomplete : new boolean[] { true, false })
2969      {
2970          final CFException ex = new CFException();
2971 <        final CompletableFutureInc r = new CompletableFutureInc();
2971 >        final CompletableFutureInc r = new CompletableFutureInc(m);
2972          final CompletableFuture<Integer> f = new CompletableFuture<>();
2973          if (!createIncomplete) f.completeExceptionally(ex);
2974 <        final CompletableFuture<Integer> g = f.thenCompose(r);
2974 >        final CompletableFuture<Integer> g = m.thenCompose(f, r);
2975          if (createIncomplete) f.completeExceptionally(ex);
2976  
2977 <        checkCompletedWithWrappedCFException(g, ex);
2978 <        checkCompletedWithWrappedCFException(f, ex);
2979 <        assertEquals(0, r.invocationCount);
2977 >        checkCompletedWithWrappedException(g, ex);
2978 >        checkCompletedExceptionally(f, ex);
2979 >        r.assertNotInvoked();
2980      }}
2981  
2982      /**
# Line 2491 | Line 2989 | public class CompletableFutureTest exten
2989      {
2990          final CompletableFuture<Integer> f = new CompletableFuture<>();
2991          final FailingCompletableFutureFunction r
2992 <            = new FailingCompletableFutureFunction();
2993 <        if (!createIncomplete) f.complete(v1);
2994 <        final CompletableFuture<Integer> g = f.thenCompose(r);
2995 <        if (createIncomplete) f.complete(v1);
2992 >            = new FailingCompletableFutureFunction(m);
2993 >        if (!createIncomplete) assertTrue(f.complete(v1));
2994 >        final CompletableFuture<Integer> g = m.thenCompose(f, r);
2995 >        if (createIncomplete) assertTrue(f.complete(v1));
2996  
2997 <        checkCompletedWithWrappedCFException(g);
2997 >        checkCompletedWithWrappedException(g, r.ex);
2998          checkCompletedNormally(f, v1);
2999      }}
3000  
# Line 2509 | Line 3007 | public class CompletableFutureTest exten
3007          for (boolean mayInterruptIfRunning : new boolean[] { true, false })
3008      {
3009          final CompletableFuture<Integer> f = new CompletableFuture<>();
3010 <        final CompletableFutureInc r = new CompletableFutureInc();
3010 >        final CompletableFutureInc r = new CompletableFutureInc(m);
3011          if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
3012 <        final CompletableFuture<Integer> g = f.thenCompose(r);
3012 >        final CompletableFuture<Integer> g = m.thenCompose(f, r);
3013          if (createIncomplete) {
3014              checkIncomplete(g);
3015              assertTrue(f.cancel(mayInterruptIfRunning));
# Line 2521 | Line 3019 | public class CompletableFutureTest exten
3019          checkCancelled(f);
3020      }}
3021  
3022 +    /**
3023 +     * thenCompose result completes exceptionally if the result of the action does
3024 +     */
3025 +    public void testThenCompose_actionReturnsFailingFuture() {
3026 +        for (ExecutionMode m : ExecutionMode.values())
3027 +        for (int order = 0; order < 6; order++)
3028 +        for (Integer v1 : new Integer[] { 1, null })
3029 +    {
3030 +        final CFException ex = new CFException();
3031 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
3032 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
3033 +        final CompletableFuture<Integer> h;
3034 +        // Test all permutations of orders
3035 +        switch (order) {
3036 +        case 0:
3037 +            assertTrue(f.complete(v1));
3038 +            assertTrue(g.completeExceptionally(ex));
3039 +            h = m.thenCompose(f, (x -> g));
3040 +            break;
3041 +        case 1:
3042 +            assertTrue(f.complete(v1));
3043 +            h = m.thenCompose(f, (x -> g));
3044 +            assertTrue(g.completeExceptionally(ex));
3045 +            break;
3046 +        case 2:
3047 +            assertTrue(g.completeExceptionally(ex));
3048 +            assertTrue(f.complete(v1));
3049 +            h = m.thenCompose(f, (x -> g));
3050 +            break;
3051 +        case 3:
3052 +            assertTrue(g.completeExceptionally(ex));
3053 +            h = m.thenCompose(f, (x -> g));
3054 +            assertTrue(f.complete(v1));
3055 +            break;
3056 +        case 4:
3057 +            h = m.thenCompose(f, (x -> g));
3058 +            assertTrue(f.complete(v1));
3059 +            assertTrue(g.completeExceptionally(ex));
3060 +            break;
3061 +        case 5:
3062 +            h = m.thenCompose(f, (x -> g));
3063 +            assertTrue(f.complete(v1));
3064 +            assertTrue(g.completeExceptionally(ex));
3065 +            break;
3066 +        default: throw new AssertionError();
3067 +        }
3068 +
3069 +        checkCompletedExceptionally(g, ex);
3070 +        checkCompletedWithWrappedException(h, ex);
3071 +        checkCompletedNormally(f, v1);
3072 +    }}
3073 +
3074      // other static methods
3075  
3076      /**
# Line 2537 | Line 3087 | public class CompletableFutureTest exten
3087       * when all components complete normally
3088       */
3089      public void testAllOf_normal() throws Exception {
3090 <        for (int k = 1; k < 20; ++k) {
3091 <            CompletableFuture<Integer>[] fs = (CompletableFuture<Integer>[]) new CompletableFuture[k];
3092 <            for (int i = 0; i < k; ++i)
3090 >        for (int k = 1; k < 10; k++) {
3091 >            CompletableFuture<Integer>[] fs
3092 >                = (CompletableFuture<Integer>[]) new CompletableFuture[k];
3093 >            for (int i = 0; i < k; i++)
3094 >                fs[i] = new CompletableFuture<>();
3095 >            CompletableFuture<Void> f = CompletableFuture.allOf(fs);
3096 >            for (int i = 0; i < k; i++) {
3097 >                checkIncomplete(f);
3098 >                checkIncomplete(CompletableFuture.allOf(fs));
3099 >                fs[i].complete(one);
3100 >            }
3101 >            checkCompletedNormally(f, null);
3102 >            checkCompletedNormally(CompletableFuture.allOf(fs), null);
3103 >        }
3104 >    }
3105 >
3106 >    public void testAllOf_normal_backwards() throws Exception {
3107 >        for (int k = 1; k < 10; k++) {
3108 >            CompletableFuture<Integer>[] fs
3109 >                = (CompletableFuture<Integer>[]) new CompletableFuture[k];
3110 >            for (int i = 0; i < k; i++)
3111                  fs[i] = new CompletableFuture<>();
3112              CompletableFuture<Void> f = CompletableFuture.allOf(fs);
3113 <            for (int i = 0; i < k; ++i) {
3113 >            for (int i = k - 1; i >= 0; i--) {
3114                  checkIncomplete(f);
3115                  checkIncomplete(CompletableFuture.allOf(fs));
3116                  fs[i].complete(one);
# Line 2552 | Line 3120 | public class CompletableFutureTest exten
3120          }
3121      }
3122  
3123 +    public void testAllOf_exceptional() throws Exception {
3124 +        for (int k = 1; k < 10; k++) {
3125 +            CompletableFuture<Integer>[] fs
3126 +                = (CompletableFuture<Integer>[]) new CompletableFuture[k];
3127 +            CFException ex = new CFException();
3128 +            for (int i = 0; i < k; i++)
3129 +                fs[i] = new CompletableFuture<>();
3130 +            CompletableFuture<Void> f = CompletableFuture.allOf(fs);
3131 +            for (int i = 0; i < k; i++) {
3132 +                checkIncomplete(f);
3133 +                checkIncomplete(CompletableFuture.allOf(fs));
3134 +                if (i != k / 2) {
3135 +                    fs[i].complete(i);
3136 +                    checkCompletedNormally(fs[i], i);
3137 +                } else {
3138 +                    fs[i].completeExceptionally(ex);
3139 +                    checkCompletedExceptionally(fs[i], ex);
3140 +                }
3141 +            }
3142 +            checkCompletedWithWrappedException(f, ex);
3143 +            checkCompletedWithWrappedException(CompletableFuture.allOf(fs), ex);
3144 +        }
3145 +    }
3146 +
3147      /**
3148       * anyOf(no component futures) returns an incomplete future
3149       */
3150      public void testAnyOf_empty() throws Exception {
3151 +        for (Integer v1 : new Integer[] { 1, null })
3152 +    {
3153          CompletableFuture<Object> f = CompletableFuture.anyOf();
3154          checkIncomplete(f);
3155 <    }
3155 >
3156 >        f.complete(v1);
3157 >        checkCompletedNormally(f, v1);
3158 >    }}
3159  
3160      /**
3161       * anyOf returns a future completed normally with a value when
3162       * a component future does
3163       */
3164      public void testAnyOf_normal() throws Exception {
3165 <        for (int k = 0; k < 10; ++k) {
3165 >        for (int k = 0; k < 10; k++) {
3166              CompletableFuture[] fs = new CompletableFuture[k];
3167 <            for (int i = 0; i < k; ++i)
3167 >            for (int i = 0; i < k; i++)
3168                  fs[i] = new CompletableFuture<>();
3169              CompletableFuture<Object> f = CompletableFuture.anyOf(fs);
3170              checkIncomplete(f);
3171 <            for (int i = 0; i < k; ++i) {
3172 <                fs[i].complete(one);
3173 <                checkCompletedNormally(f, one);
3174 <                checkCompletedNormally(CompletableFuture.anyOf(fs), one);
3171 >            for (int i = 0; i < k; i++) {
3172 >                fs[i].complete(i);
3173 >                checkCompletedNormally(f, 0);
3174 >                int x = (int) CompletableFuture.anyOf(fs).join();
3175 >                assertTrue(0 <= x && x <= i);
3176 >            }
3177 >        }
3178 >    }
3179 >    public void testAnyOf_normal_backwards() throws Exception {
3180 >        for (int k = 0; k < 10; k++) {
3181 >            CompletableFuture[] fs = new CompletableFuture[k];
3182 >            for (int i = 0; i < k; i++)
3183 >                fs[i] = new CompletableFuture<>();
3184 >            CompletableFuture<Object> f = CompletableFuture.anyOf(fs);
3185 >            checkIncomplete(f);
3186 >            for (int i = k - 1; i >= 0; i--) {
3187 >                fs[i].complete(i);
3188 >                checkCompletedNormally(f, k - 1);
3189 >                int x = (int) CompletableFuture.anyOf(fs).join();
3190 >                assertTrue(i <= x && x <= k - 1);
3191              }
3192          }
3193      }
# Line 2583 | Line 3196 | public class CompletableFutureTest exten
3196       * anyOf result completes exceptionally when any component does.
3197       */
3198      public void testAnyOf_exceptional() throws Exception {
3199 <        for (int k = 0; k < 10; ++k) {
3199 >        for (int k = 0; k < 10; k++) {
3200              CompletableFuture[] fs = new CompletableFuture[k];
3201 <            for (int i = 0; i < k; ++i)
3201 >            CFException[] exs = new CFException[k];
3202 >            for (int i = 0; i < k; i++) {
3203                  fs[i] = new CompletableFuture<>();
3204 +                exs[i] = new CFException();
3205 +            }
3206              CompletableFuture<Object> f = CompletableFuture.anyOf(fs);
3207              checkIncomplete(f);
3208 <            for (int i = 0; i < k; ++i) {
3209 <                fs[i].completeExceptionally(new CFException());
3210 <                checkCompletedWithWrappedCFException(f);
3208 >            for (int i = 0; i < k; i++) {
3209 >                fs[i].completeExceptionally(exs[i]);
3210 >                checkCompletedWithWrappedException(f, exs[0]);
3211 >                checkCompletedWithWrappedCFException(CompletableFuture.anyOf(fs));
3212 >            }
3213 >        }
3214 >    }
3215 >
3216 >    public void testAnyOf_exceptional_backwards() throws Exception {
3217 >        for (int k = 0; k < 10; k++) {
3218 >            CompletableFuture[] fs = new CompletableFuture[k];
3219 >            CFException[] exs = new CFException[k];
3220 >            for (int i = 0; i < k; i++) {
3221 >                fs[i] = new CompletableFuture<>();
3222 >                exs[i] = new CFException();
3223 >            }
3224 >            CompletableFuture<Object> f = CompletableFuture.anyOf(fs);
3225 >            checkIncomplete(f);
3226 >            for (int i = k - 1; i >= 0; i--) {
3227 >                fs[i].completeExceptionally(exs[i]);
3228 >                checkCompletedWithWrappedException(f, exs[k - 1]);
3229                  checkCompletedWithWrappedCFException(CompletableFuture.anyOf(fs));
3230              }
3231          }
# Line 2604 | Line 3238 | public class CompletableFutureTest exten
3238          CompletableFuture<Integer> f = new CompletableFuture<>();
3239          CompletableFuture<Integer> g = new CompletableFuture<>();
3240          CompletableFuture<Integer> nullFuture = (CompletableFuture<Integer>)null;
2607        CompletableFuture<?> h;
3241          ThreadExecutor exec = new ThreadExecutor();
3242  
3243          Runnable[] throwingActions = {
3244              () -> CompletableFuture.supplyAsync(null),
3245              () -> CompletableFuture.supplyAsync(null, exec),
3246 <            () -> CompletableFuture.supplyAsync(supplyOne, null),
3246 >            () -> CompletableFuture.supplyAsync(new IntegerSupplier(ExecutionMode.SYNC, 42), null),
3247  
3248              () -> CompletableFuture.runAsync(null),
3249              () -> CompletableFuture.runAsync(null, exec),
# Line 2683 | Line 3316 | public class CompletableFutureTest exten
3316  
3317              () -> f.thenCompose(null),
3318              () -> f.thenComposeAsync(null),
3319 <            () -> f.thenComposeAsync(new CompletableFutureInc(), null),
3319 >            () -> f.thenComposeAsync(new CompletableFutureInc(ExecutionMode.EXECUTOR), null),
3320              () -> f.thenComposeAsync(null, exec),
3321  
3322              () -> f.exceptionally(null),
# Line 2701 | Line 3334 | public class CompletableFutureTest exten
3334              () -> CompletableFuture.anyOf(null, f),
3335  
3336              () -> f.obtrudeException(null),
3337 +
3338 +            () -> CompletableFuture.delayedExecutor(1L, SECONDS, null),
3339 +            () -> CompletableFuture.delayedExecutor(1L, null, exec),
3340 +            () -> CompletableFuture.delayedExecutor(1L, null),
3341 +
3342 +            () -> f.orTimeout(1L, null),
3343 +            () -> f.completeOnTimeout(42, 1L, null),
3344 +
3345 +            () -> CompletableFuture.failedFuture(null),
3346 +            () -> CompletableFuture.failedStage(null),
3347          };
3348  
3349          assertThrows(NullPointerException.class, throwingActions);
# Line 2708 | Line 3351 | public class CompletableFutureTest exten
3351      }
3352  
3353      /**
3354 +     * Test submissions to an executor that rejects all tasks.
3355 +     */
3356 +    public void testRejectingExecutor() {
3357 +        for (Integer v : new Integer[] { 1, null })
3358 +    {
3359 +        final CountingRejectingExecutor e = new CountingRejectingExecutor();
3360 +
3361 +        final CompletableFuture<Integer> complete = CompletableFuture.completedFuture(v);
3362 +        final CompletableFuture<Integer> incomplete = new CompletableFuture<>();
3363 +
3364 +        List<CompletableFuture<?>> futures = new ArrayList<>();
3365 +
3366 +        List<CompletableFuture<Integer>> srcs = new ArrayList<>();
3367 +        srcs.add(complete);
3368 +        srcs.add(incomplete);
3369 +
3370 +        for (CompletableFuture<Integer> src : srcs) {
3371 +            List<CompletableFuture<?>> fs = new ArrayList<>();
3372 +            fs.add(src.thenRunAsync(() -> {}, e));
3373 +            fs.add(src.thenAcceptAsync((z) -> {}, e));
3374 +            fs.add(src.thenApplyAsync((z) -> z, e));
3375 +
3376 +            fs.add(src.thenCombineAsync(src, (x, y) -> x, e));
3377 +            fs.add(src.thenAcceptBothAsync(src, (x, y) -> {}, e));
3378 +            fs.add(src.runAfterBothAsync(src, () -> {}, e));
3379 +
3380 +            fs.add(src.applyToEitherAsync(src, (z) -> z, e));
3381 +            fs.add(src.acceptEitherAsync(src, (z) -> {}, e));
3382 +            fs.add(src.runAfterEitherAsync(src, () -> {}, e));
3383 +
3384 +            fs.add(src.thenComposeAsync((z) -> null, e));
3385 +            fs.add(src.whenCompleteAsync((z, t) -> {}, e));
3386 +            fs.add(src.handleAsync((z, t) -> null, e));
3387 +
3388 +            for (CompletableFuture<?> future : fs) {
3389 +                if (src.isDone())
3390 +                    checkCompletedWithWrappedException(future, e.ex);
3391 +                else
3392 +                    checkIncomplete(future);
3393 +            }
3394 +            futures.addAll(fs);
3395 +        }
3396 +
3397 +        {
3398 +            List<CompletableFuture<?>> fs = new ArrayList<>();
3399 +
3400 +            fs.add(complete.thenCombineAsync(incomplete, (x, y) -> x, e));
3401 +            fs.add(incomplete.thenCombineAsync(complete, (x, y) -> x, e));
3402 +
3403 +            fs.add(complete.thenAcceptBothAsync(incomplete, (x, y) -> {}, e));
3404 +            fs.add(incomplete.thenAcceptBothAsync(complete, (x, y) -> {}, e));
3405 +
3406 +            fs.add(complete.runAfterBothAsync(incomplete, () -> {}, e));
3407 +            fs.add(incomplete.runAfterBothAsync(complete, () -> {}, e));
3408 +
3409 +            for (CompletableFuture<?> future : fs)
3410 +                checkIncomplete(future);
3411 +            futures.addAll(fs);
3412 +        }
3413 +
3414 +        {
3415 +            List<CompletableFuture<?>> fs = new ArrayList<>();
3416 +
3417 +            fs.add(complete.applyToEitherAsync(incomplete, (z) -> z, e));
3418 +            fs.add(incomplete.applyToEitherAsync(complete, (z) -> z, e));
3419 +
3420 +            fs.add(complete.acceptEitherAsync(incomplete, (z) -> {}, e));
3421 +            fs.add(incomplete.acceptEitherAsync(complete, (z) -> {}, e));
3422 +
3423 +            fs.add(complete.runAfterEitherAsync(incomplete, () -> {}, e));
3424 +            fs.add(incomplete.runAfterEitherAsync(complete, () -> {}, e));
3425 +
3426 +            for (CompletableFuture<?> future : fs)
3427 +                checkCompletedWithWrappedException(future, e.ex);
3428 +            futures.addAll(fs);
3429 +        }
3430 +
3431 +        incomplete.complete(v);
3432 +
3433 +        for (CompletableFuture<?> future : futures)
3434 +            checkCompletedWithWrappedException(future, e.ex);
3435 +
3436 +        assertEquals(futures.size(), e.count.get());
3437 +    }}
3438 +
3439 +    /**
3440 +     * Test submissions to an executor that rejects all tasks, but
3441 +     * should never be invoked because the dependent future is
3442 +     * explicitly completed.
3443 +     */
3444 +    public void testRejectingExecutorNeverInvoked() {
3445 +        for (Integer v : new Integer[] { 1, null })
3446 +    {
3447 +        final CountingRejectingExecutor e = new CountingRejectingExecutor();
3448 +
3449 +        final CompletableFuture<Integer> complete = CompletableFuture.completedFuture(v);
3450 +        final CompletableFuture<Integer> incomplete = new CompletableFuture<>();
3451 +
3452 +        List<CompletableFuture<?>> futures = new ArrayList<>();
3453 +
3454 +        List<CompletableFuture<Integer>> srcs = new ArrayList<>();
3455 +        srcs.add(complete);
3456 +        srcs.add(incomplete);
3457 +
3458 +        List<CompletableFuture<?>> fs = new ArrayList<>();
3459 +        fs.add(incomplete.thenRunAsync(() -> {}, e));
3460 +        fs.add(incomplete.thenAcceptAsync((z) -> {}, e));
3461 +        fs.add(incomplete.thenApplyAsync((z) -> z, e));
3462 +
3463 +        fs.add(incomplete.thenCombineAsync(incomplete, (x, y) -> x, e));
3464 +        fs.add(incomplete.thenAcceptBothAsync(incomplete, (x, y) -> {}, e));
3465 +        fs.add(incomplete.runAfterBothAsync(incomplete, () -> {}, e));
3466 +
3467 +        fs.add(incomplete.applyToEitherAsync(incomplete, (z) -> z, e));
3468 +        fs.add(incomplete.acceptEitherAsync(incomplete, (z) -> {}, e));
3469 +        fs.add(incomplete.runAfterEitherAsync(incomplete, () -> {}, e));
3470 +
3471 +        fs.add(incomplete.thenComposeAsync((z) -> null, e));
3472 +        fs.add(incomplete.whenCompleteAsync((z, t) -> {}, e));
3473 +        fs.add(incomplete.handleAsync((z, t) -> null, e));
3474 +
3475 +        fs.add(complete.thenCombineAsync(incomplete, (x, y) -> x, e));
3476 +        fs.add(incomplete.thenCombineAsync(complete, (x, y) -> x, e));
3477 +
3478 +        fs.add(complete.thenAcceptBothAsync(incomplete, (x, y) -> {}, e));
3479 +        fs.add(incomplete.thenAcceptBothAsync(complete, (x, y) -> {}, e));
3480 +
3481 +        fs.add(complete.runAfterBothAsync(incomplete, () -> {}, e));
3482 +        fs.add(incomplete.runAfterBothAsync(complete, () -> {}, e));
3483 +
3484 +        for (CompletableFuture<?> future : fs)
3485 +            checkIncomplete(future);
3486 +
3487 +        for (CompletableFuture<?> future : fs)
3488 +            future.complete(null);
3489 +
3490 +        incomplete.complete(v);
3491 +
3492 +        for (CompletableFuture<?> future : fs)
3493 +            checkCompletedNormally(future, null);
3494 +
3495 +        assertEquals(0, e.count.get());
3496 +    }}
3497 +
3498 +    /**
3499       * toCompletableFuture returns this CompletableFuture.
3500       */
3501      public void testToCompletableFuture() {
# Line 2715 | Line 3503 | public class CompletableFutureTest exten
3503          assertSame(f, f.toCompletableFuture());
3504      }
3505  
3506 +    // jdk9
3507 +
3508      /**
3509 <     * whenComplete action executes on normal completion, propagating
2720 <     * source result.
3509 >     * newIncompleteFuture returns an incomplete CompletableFuture
3510       */
3511 <    public void testWhenComplete_normalCompletion1() {
2723 <        for (ExecutionMode m : ExecutionMode.values())
2724 <        for (boolean createIncomplete : new boolean[] { true, false })
3511 >    public void testNewIncompleteFuture() {
3512          for (Integer v1 : new Integer[] { 1, null })
3513      {
3514 <        final AtomicInteger a = new AtomicInteger(0);
3515 <        final CompletableFuture<Integer> f = new CompletableFuture<>();
3516 <        if (!createIncomplete) f.complete(v1);
3517 <        final CompletableFuture<Integer> g = m.whenComplete
3518 <            (f,
2732 <             (Integer x, Throwable t) -> {
2733 <                threadAssertSame(x, v1);
2734 <                threadAssertNull(t);
2735 <                a.getAndIncrement();
2736 <            });
2737 <        if (createIncomplete) f.complete(v1);
2738 <
2739 <        checkCompletedNormally(g, v1);
3514 >        CompletableFuture<Integer> f = new CompletableFuture<>();
3515 >        CompletableFuture<Integer> g = f.newIncompleteFuture();
3516 >        checkIncomplete(f);
3517 >        checkIncomplete(g);
3518 >        f.complete(v1);
3519          checkCompletedNormally(f, v1);
3520 <        assertEquals(1, a.get());
3520 >        checkIncomplete(g);
3521 >        g.complete(v1);
3522 >        checkCompletedNormally(g, v1);
3523 >        assertSame(g.getClass(), CompletableFuture.class);
3524      }}
3525  
3526      /**
3527 <     * whenComplete action executes on exceptional completion, propagating
2746 <     * source result.
3527 >     * completedStage returns a completed CompletionStage
3528       */
3529 <    public void testWhenComplete_exceptionalCompletion() {
3530 <        for (ExecutionMode m : ExecutionMode.values())
3531 <        for (boolean createIncomplete : new boolean[] { true, false })
3529 >    public void testCompletedStage() {
3530 >        AtomicInteger x = new AtomicInteger(0);
3531 >        AtomicReference<Throwable> r = new AtomicReference<Throwable>();
3532 >        CompletionStage<Integer> f = CompletableFuture.completedStage(1);
3533 >        f.whenComplete((v, e) -> {if (e != null) r.set(e); else x.set(v);});
3534 >        assertEquals(x.get(), 1);
3535 >        assertNull(r.get());
3536 >    }
3537 >
3538 >    /**
3539 >     * defaultExecutor by default returns the commonPool if
3540 >     * it supports more than one thread.
3541 >     */
3542 >    public void testDefaultExecutor() {
3543 >        CompletableFuture<Integer> f = new CompletableFuture<>();
3544 >        Executor e = f.defaultExecutor();
3545 >        Executor c = ForkJoinPool.commonPool();
3546 >        if (ForkJoinPool.getCommonPoolParallelism() > 1)
3547 >            assertSame(e, c);
3548 >        else
3549 >            assertNotSame(e, c);
3550 >    }
3551 >
3552 >    /**
3553 >     * failedFuture returns a CompletableFuture completed
3554 >     * exceptionally with the given Exception
3555 >     */
3556 >    public void testFailedFuture() {
3557 >        CFException ex = new CFException();
3558 >        CompletableFuture<Integer> f = CompletableFuture.failedFuture(ex);
3559 >        checkCompletedExceptionally(f, ex);
3560 >    }
3561 >
3562 >    /**
3563 >     * failedFuture(null) throws NPE
3564 >     */
3565 >    public void testFailedFuture_null() {
3566 >        try {
3567 >            CompletableFuture<Integer> f = CompletableFuture.failedFuture(null);
3568 >            shouldThrow();
3569 >        } catch (NullPointerException success) {}
3570 >    }
3571 >
3572 >    /**
3573 >     * copy returns a CompletableFuture that is completed normally,
3574 >     * with the same value, when source is.
3575 >     */
3576 >    public void testCopy() {
3577 >        CompletableFuture<Integer> f = new CompletableFuture<>();
3578 >        CompletableFuture<Integer> g = f.copy();
3579 >        checkIncomplete(f);
3580 >        checkIncomplete(g);
3581 >        f.complete(1);
3582 >        checkCompletedNormally(f, 1);
3583 >        checkCompletedNormally(g, 1);
3584 >    }
3585 >
3586 >    /**
3587 >     * copy returns a CompletableFuture that is completed exceptionally
3588 >     * when source is.
3589 >     */
3590 >    public void testCopy2() {
3591 >        CompletableFuture<Integer> f = new CompletableFuture<>();
3592 >        CompletableFuture<Integer> g = f.copy();
3593 >        checkIncomplete(f);
3594 >        checkIncomplete(g);
3595 >        CFException ex = new CFException();
3596 >        f.completeExceptionally(ex);
3597 >        checkCompletedExceptionally(f, ex);
3598 >        checkCompletedWithWrappedException(g, ex);
3599 >    }
3600 >
3601 >    /**
3602 >     * minimalCompletionStage returns a CompletableFuture that is
3603 >     * completed normally, with the same value, when source is.
3604 >     */
3605 >    public void testMinimalCompletionStage() {
3606 >        CompletableFuture<Integer> f = new CompletableFuture<>();
3607 >        CompletionStage<Integer> g = f.minimalCompletionStage();
3608 >        AtomicInteger x = new AtomicInteger(0);
3609 >        AtomicReference<Throwable> r = new AtomicReference<Throwable>();
3610 >        checkIncomplete(f);
3611 >        g.whenComplete((v, e) -> {if (e != null) r.set(e); else x.set(v);});
3612 >        f.complete(1);
3613 >        checkCompletedNormally(f, 1);
3614 >        assertEquals(x.get(), 1);
3615 >        assertNull(r.get());
3616 >    }
3617 >
3618 >    /**
3619 >     * minimalCompletionStage returns a CompletableFuture that is
3620 >     * completed exceptionally when source is.
3621 >     */
3622 >    public void testMinimalCompletionStage2() {
3623 >        CompletableFuture<Integer> f = new CompletableFuture<>();
3624 >        CompletionStage<Integer> g = f.minimalCompletionStage();
3625 >        AtomicInteger x = new AtomicInteger(0);
3626 >        AtomicReference<Throwable> r = new AtomicReference<Throwable>();
3627 >        g.whenComplete((v, e) -> {if (e != null) r.set(e); else x.set(v);});
3628 >        checkIncomplete(f);
3629 >        CFException ex = new CFException();
3630 >        f.completeExceptionally(ex);
3631 >        checkCompletedExceptionally(f, ex);
3632 >        assertEquals(x.get(), 0);
3633 >        assertEquals(r.get().getCause(), ex);
3634 >    }
3635 >
3636 >    /**
3637 >     * failedStage returns a CompletionStage completed
3638 >     * exceptionally with the given Exception
3639 >     */
3640 >    public void testFailedStage() {
3641 >        CFException ex = new CFException();
3642 >        CompletionStage<Integer> f = CompletableFuture.failedStage(ex);
3643 >        AtomicInteger x = new AtomicInteger(0);
3644 >        AtomicReference<Throwable> r = new AtomicReference<Throwable>();
3645 >        f.whenComplete((v, e) -> {if (e != null) r.set(e); else x.set(v);});
3646 >        assertEquals(x.get(), 0);
3647 >        assertEquals(r.get(), ex);
3648 >    }
3649 >
3650 >    /**
3651 >     * completeAsync completes with value of given supplier
3652 >     */
3653 >    public void testCompleteAsync() {
3654          for (Integer v1 : new Integer[] { 1, null })
3655      {
3656 <        final AtomicInteger a = new AtomicInteger(0);
3657 <        final CFException ex = new CFException();
3658 <        final CompletableFuture<Integer> f = new CompletableFuture<>();
3659 <        if (!createIncomplete) f.completeExceptionally(ex);
2757 <        final CompletableFuture<Integer> g = m.whenComplete
2758 <            (f,
2759 <             (Integer x, Throwable t) -> {
2760 <                threadAssertNull(x);
2761 <                threadAssertSame(t, ex);
2762 <                a.getAndIncrement();
2763 <            });
2764 <        if (createIncomplete) f.completeExceptionally(ex);
2765 <        checkCompletedWithWrappedCFException(f, ex);
2766 <        checkCompletedWithWrappedCFException(g, ex);
2767 <        assertEquals(1, a.get());
3656 >        CompletableFuture<Integer> f = new CompletableFuture<>();
3657 >        f.completeAsync(() -> v1);
3658 >        f.join();
3659 >        checkCompletedNormally(f, v1);
3660      }}
3661  
3662      /**
3663 <     * whenComplete action executes on cancelled source, propagating
2772 <     * CancellationException.
3663 >     * completeAsync completes exceptionally if given supplier throws
3664       */
3665 <    public void testWhenComplete_sourceCancelled() {
3666 <        for (ExecutionMode m : ExecutionMode.values())
3667 <        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
3668 <        for (boolean createIncomplete : new boolean[] { true, false })
3665 >    public void testCompleteAsync2() {
3666 >        CompletableFuture<Integer> f = new CompletableFuture<>();
3667 >        CFException ex = new CFException();
3668 >        f.completeAsync(() -> {if (true) throw ex; return 1;});
3669 >        try {
3670 >            f.join();
3671 >            shouldThrow();
3672 >        } catch (CompletionException success) {}
3673 >        checkCompletedWithWrappedException(f, ex);
3674 >    }
3675 >
3676 >    /**
3677 >     * completeAsync with given executor completes with value of given supplier
3678 >     */
3679 >    public void testCompleteAsync3() {
3680 >        for (Integer v1 : new Integer[] { 1, null })
3681      {
3682 <        final AtomicInteger a = new AtomicInteger(0);
3683 <        final CompletableFuture<Integer> f = new CompletableFuture<>();
3684 <        if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
3685 <        final CompletableFuture<Integer> g = m.whenComplete
3686 <            (f,
3687 <             (Integer x, Throwable t) -> {
3688 <                threadAssertNull(x);
2786 <                threadAssertTrue(t instanceof CancellationException);
2787 <                a.getAndIncrement();
2788 <            });
2789 <        if (createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
3682 >        CompletableFuture<Integer> f = new CompletableFuture<>();
3683 >        ThreadExecutor executor = new ThreadExecutor();
3684 >        f.completeAsync(() -> v1, executor);
3685 >        assertSame(v1, f.join());
3686 >        checkCompletedNormally(f, v1);
3687 >        assertEquals(1, executor.count.get());
3688 >    }}
3689  
3690 <        //try { g.join(); } catch (Throwable t) { throw new Error(t); }
3691 <        checkCompletedWithWrappedCancellationException(g);
3692 <        checkCancelled(f);
3693 <        assertEquals(1, a.get());
3690 >    /**
3691 >     * completeAsync with given executor completes exceptionally if
3692 >     * given supplier throws
3693 >     */
3694 >    public void testCompleteAsync4() {
3695 >        CompletableFuture<Integer> f = new CompletableFuture<>();
3696 >        CFException ex = new CFException();
3697 >        ThreadExecutor executor = new ThreadExecutor();
3698 >        f.completeAsync(() -> {if (true) throw ex; return 1;}, executor);
3699 >        try {
3700 >            f.join();
3701 >            shouldThrow();
3702 >        } catch (CompletionException success) {}
3703 >        checkCompletedWithWrappedException(f, ex);
3704 >        assertEquals(1, executor.count.get());
3705 >    }
3706 >
3707 >    /**
3708 >     * orTimeout completes with TimeoutException if not complete
3709 >     */
3710 >    public void testOrTimeout_timesOut() {
3711 >        long timeoutMillis = timeoutMillis();
3712 >        CompletableFuture<Integer> f = new CompletableFuture<>();
3713 >        long startTime = System.nanoTime();
3714 >        assertSame(f, f.orTimeout(timeoutMillis, MILLISECONDS));
3715 >        checkCompletedWithTimeoutException(f);
3716 >        assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
3717 >    }
3718 >
3719 >    /**
3720 >     * orTimeout completes normally if completed before timeout
3721 >     */
3722 >    public void testOrTimeout_completed() {
3723 >        for (Integer v1 : new Integer[] { 1, null })
3724 >    {
3725 >        CompletableFuture<Integer> f = new CompletableFuture<>();
3726 >        CompletableFuture<Integer> g = new CompletableFuture<>();
3727 >        long startTime = System.nanoTime();
3728 >        f.complete(v1);
3729 >        assertSame(f, f.orTimeout(LONG_DELAY_MS, MILLISECONDS));
3730 >        assertSame(g, g.orTimeout(LONG_DELAY_MS, MILLISECONDS));
3731 >        g.complete(v1);
3732 >        checkCompletedNormally(f, v1);
3733 >        checkCompletedNormally(g, v1);
3734 >        assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS / 2);
3735      }}
3736  
3737      /**
3738 <     * If a whenComplete action throws an exception when triggered by
2799 <     * a normal completion, it completes exceptionally
3738 >     * completeOnTimeout completes with given value if not complete
3739       */
3740 <    public void testWhenComplete_actionFailed() {
3741 <        for (boolean createIncomplete : new boolean[] { true, false })
3742 <        for (ExecutionMode m : ExecutionMode.values())
3740 >    public void testCompleteOnTimeout_timesOut() {
3741 >        testInParallel(() -> testCompleteOnTimeout_timesOut(42),
3742 >                       () -> testCompleteOnTimeout_timesOut(null));
3743 >    }
3744 >
3745 >    /**
3746 >     * completeOnTimeout completes with given value if not complete
3747 >     */
3748 >    public void testCompleteOnTimeout_timesOut(Integer v) {
3749 >        long timeoutMillis = timeoutMillis();
3750 >        CompletableFuture<Integer> f = new CompletableFuture<>();
3751 >        long startTime = System.nanoTime();
3752 >        assertSame(f, f.completeOnTimeout(v, timeoutMillis, MILLISECONDS));
3753 >        assertSame(v, f.join());
3754 >        assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
3755 >        f.complete(99);         // should have no effect
3756 >        checkCompletedNormally(f, v);
3757 >    }
3758 >
3759 >    /**
3760 >     * completeOnTimeout has no effect if completed within timeout
3761 >     */
3762 >    public void testCompleteOnTimeout_completed() {
3763          for (Integer v1 : new Integer[] { 1, null })
3764      {
3765 <        final AtomicInteger a = new AtomicInteger(0);
3766 <        final CFException ex = new CFException();
3767 <        final CompletableFuture<Integer> f = new CompletableFuture<>();
3768 <        if (!createIncomplete) f.complete(v1);
3769 <        final CompletableFuture<Integer> g = m.whenComplete
3770 <            (f,
3771 <             (Integer x, Throwable t) -> {
2813 <                threadAssertSame(x, v1);
2814 <                threadAssertNull(t);
2815 <                a.getAndIncrement();
2816 <                throw ex;
2817 <            });
2818 <        if (createIncomplete) f.complete(v1);
3765 >        CompletableFuture<Integer> f = new CompletableFuture<>();
3766 >        CompletableFuture<Integer> g = new CompletableFuture<>();
3767 >        long startTime = System.nanoTime();
3768 >        f.complete(v1);
3769 >        assertSame(f, f.completeOnTimeout(-1, LONG_DELAY_MS, MILLISECONDS));
3770 >        assertSame(g, g.completeOnTimeout(-1, LONG_DELAY_MS, MILLISECONDS));
3771 >        g.complete(v1);
3772          checkCompletedNormally(f, v1);
3773 <        checkCompletedWithWrappedCFException(g, ex);
3774 <        assertEquals(1, a.get());
3773 >        checkCompletedNormally(g, v1);
3774 >        assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS / 2);
3775      }}
3776  
3777      /**
3778 <     * If a whenComplete action throws an exception when triggered by
2826 <     * a source completion that also throws an exception, the source
2827 <     * exception takes precedence.
3778 >     * delayedExecutor returns an executor that delays submission
3779       */
3780 <    public void testWhenComplete_actionFailedSourceFailed() {
3781 <        for (boolean createIncomplete : new boolean[] { true, false })
3780 >    public void testDelayedExecutor() {
3781 >        testInParallel(() -> testDelayedExecutor(null, null),
3782 >                       () -> testDelayedExecutor(null, 1),
3783 >                       () -> testDelayedExecutor(new ThreadExecutor(), 1),
3784 >                       () -> testDelayedExecutor(new ThreadExecutor(), 1));
3785 >    }
3786 >
3787 >    public void testDelayedExecutor(Executor executor, Integer v) throws Exception {
3788 >        long timeoutMillis = timeoutMillis();
3789 >        // Use an "unreasonably long" long timeout to catch lingering threads
3790 >        long longTimeoutMillis = 1000 * 60 * 60 * 24;
3791 >        final Executor delayer, longDelayer;
3792 >        if (executor == null) {
3793 >            delayer = CompletableFuture.delayedExecutor(timeoutMillis, MILLISECONDS);
3794 >            longDelayer = CompletableFuture.delayedExecutor(longTimeoutMillis, MILLISECONDS);
3795 >        } else {
3796 >            delayer = CompletableFuture.delayedExecutor(timeoutMillis, MILLISECONDS, executor);
3797 >            longDelayer = CompletableFuture.delayedExecutor(longTimeoutMillis, MILLISECONDS, executor);
3798 >        }
3799 >        long startTime = System.nanoTime();
3800 >        CompletableFuture<Integer> f =
3801 >            CompletableFuture.supplyAsync(() -> v, delayer);
3802 >        CompletableFuture<Integer> g =
3803 >            CompletableFuture.supplyAsync(() -> v, longDelayer);
3804 >
3805 >        assertNull(g.getNow(null));
3806 >
3807 >        assertSame(v, f.get(LONG_DELAY_MS, MILLISECONDS));
3808 >        long millisElapsed = millisElapsedSince(startTime);
3809 >        assertTrue(millisElapsed >= timeoutMillis);
3810 >        assertTrue(millisElapsed < LONG_DELAY_MS / 2);
3811 >
3812 >        checkCompletedNormally(f, v);
3813 >
3814 >        checkIncomplete(g);
3815 >        assertTrue(g.cancel(true));
3816 >    }
3817 >
3818 >    //--- tests of implementation details; not part of official tck ---
3819 >
3820 >    Object resultOf(CompletableFuture<?> f) {
3821 >        SecurityManager sm = System.getSecurityManager();
3822 >        if (sm != null) {
3823 >            try {
3824 >                System.setSecurityManager(null);
3825 >            } catch (SecurityException giveUp) {
3826 >                return "Reflection not available";
3827 >            }
3828 >        }
3829 >
3830 >        try {
3831 >            java.lang.reflect.Field resultField
3832 >                = CompletableFuture.class.getDeclaredField("result");
3833 >            resultField.setAccessible(true);
3834 >            return resultField.get(f);
3835 >        } catch (Throwable t) {
3836 >            throw new AssertionError(t);
3837 >        } finally {
3838 >            if (sm != null) System.setSecurityManager(sm);
3839 >        }
3840 >    }
3841 >
3842 >    public void testExceptionPropagationReusesResultObject() {
3843 >        if (!testImplementationDetails) return;
3844          for (ExecutionMode m : ExecutionMode.values())
2832        for (Integer v1 : new Integer[] { 1, null })
3845      {
3846 <        final AtomicInteger a = new AtomicInteger(0);
3847 <        final CFException ex1 = new CFException();
3848 <        final CFException ex2 = new CFException();
2837 <        final CompletableFuture<Integer> f = new CompletableFuture<>();
3846 >        final CFException ex = new CFException();
3847 >        final CompletableFuture<Integer> v42 = CompletableFuture.completedFuture(42);
3848 >        final CompletableFuture<Integer> incomplete = new CompletableFuture<>();
3849  
3850 <        if (!createIncomplete) f.completeExceptionally(ex1);
3851 <        final CompletableFuture<Integer> g = m.whenComplete
2841 <            (f,
2842 <             (Integer x, Throwable t) -> {
2843 <                threadAssertSame(t, ex1);
2844 <                threadAssertNull(x);
2845 <                a.getAndIncrement();
2846 <                throw ex2;
2847 <            });
2848 <        if (createIncomplete) f.completeExceptionally(ex1);
3850 >        List<Function<CompletableFuture<Integer>, CompletableFuture<?>>> funs
3851 >            = new ArrayList<>();
3852  
3853 <        checkCompletedWithWrappedCFException(f, ex1);
3854 <        checkCompletedWithWrappedCFException(g, ex1);
3855 <        assertEquals(1, a.get());
3853 >        funs.add((y) -> m.thenRun(y, new Noop(m)));
3854 >        funs.add((y) -> m.thenAccept(y, new NoopConsumer(m)));
3855 >        funs.add((y) -> m.thenApply(y, new IncFunction(m)));
3856 >
3857 >        funs.add((y) -> m.runAfterEither(y, incomplete, new Noop(m)));
3858 >        funs.add((y) -> m.acceptEither(y, incomplete, new NoopConsumer(m)));
3859 >        funs.add((y) -> m.applyToEither(y, incomplete, new IncFunction(m)));
3860 >
3861 >        funs.add((y) -> m.runAfterBoth(y, v42, new Noop(m)));
3862 >        funs.add((y) -> m.runAfterBoth(v42, y, new Noop(m)));
3863 >        funs.add((y) -> m.thenAcceptBoth(y, v42, new SubtractAction(m)));
3864 >        funs.add((y) -> m.thenAcceptBoth(v42, y, new SubtractAction(m)));
3865 >        funs.add((y) -> m.thenCombine(y, v42, new SubtractFunction(m)));
3866 >        funs.add((y) -> m.thenCombine(v42, y, new SubtractFunction(m)));
3867 >
3868 >        funs.add((y) -> m.whenComplete(y, (Integer r, Throwable t) -> {}));
3869 >
3870 >        funs.add((y) -> m.thenCompose(y, new CompletableFutureInc(m)));
3871 >
3872 >        funs.add((y) -> CompletableFuture.allOf(new CompletableFuture<?>[] {y}));
3873 >        funs.add((y) -> CompletableFuture.allOf(new CompletableFuture<?>[] {y, v42}));
3874 >        funs.add((y) -> CompletableFuture.allOf(new CompletableFuture<?>[] {v42, y}));
3875 >        funs.add((y) -> CompletableFuture.anyOf(new CompletableFuture<?>[] {y}));
3876 >        funs.add((y) -> CompletableFuture.anyOf(new CompletableFuture<?>[] {y, incomplete}));
3877 >        funs.add((y) -> CompletableFuture.anyOf(new CompletableFuture<?>[] {incomplete, y}));
3878 >
3879 >        for (Function<CompletableFuture<Integer>, CompletableFuture<?>>
3880 >                 fun : funs) {
3881 >            CompletableFuture<Integer> f = new CompletableFuture<>();
3882 >            f.completeExceptionally(ex);
3883 >            CompletableFuture<Integer> src = m.thenApply(f, new IncFunction(m));
3884 >            checkCompletedWithWrappedException(src, ex);
3885 >            CompletableFuture<?> dep = fun.apply(src);
3886 >            checkCompletedWithWrappedException(dep, ex);
3887 >            assertSame(resultOf(src), resultOf(dep));
3888 >        }
3889 >
3890 >        for (Function<CompletableFuture<Integer>, CompletableFuture<?>>
3891 >                 fun : funs) {
3892 >            CompletableFuture<Integer> f = new CompletableFuture<>();
3893 >            CompletableFuture<Integer> src = m.thenApply(f, new IncFunction(m));
3894 >            CompletableFuture<?> dep = fun.apply(src);
3895 >            f.completeExceptionally(ex);
3896 >            checkCompletedWithWrappedException(src, ex);
3897 >            checkCompletedWithWrappedException(dep, ex);
3898 >            assertSame(resultOf(src), resultOf(dep));
3899 >        }
3900 >
3901 >        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
3902 >        for (Function<CompletableFuture<Integer>, CompletableFuture<?>>
3903 >                 fun : funs) {
3904 >            CompletableFuture<Integer> f = new CompletableFuture<>();
3905 >            f.cancel(mayInterruptIfRunning);
3906 >            checkCancelled(f);
3907 >            CompletableFuture<Integer> src = m.thenApply(f, new IncFunction(m));
3908 >            checkCompletedWithWrappedCancellationException(src);
3909 >            CompletableFuture<?> dep = fun.apply(src);
3910 >            checkCompletedWithWrappedCancellationException(dep);
3911 >            assertSame(resultOf(src), resultOf(dep));
3912 >        }
3913 >
3914 >        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
3915 >        for (Function<CompletableFuture<Integer>, CompletableFuture<?>>
3916 >                 fun : funs) {
3917 >            CompletableFuture<Integer> f = new CompletableFuture<>();
3918 >            CompletableFuture<Integer> src = m.thenApply(f, new IncFunction(m));
3919 >            CompletableFuture<?> dep = fun.apply(src);
3920 >            f.cancel(mayInterruptIfRunning);
3921 >            checkCancelled(f);
3922 >            checkCompletedWithWrappedCancellationException(src);
3923 >            checkCompletedWithWrappedCancellationException(dep);
3924 >            assertSame(resultOf(src), resultOf(dep));
3925 >        }
3926      }}
3927  
3928 +    /**
3929 +     * Minimal completion stages throw UOE for all non-CompletionStage methods
3930 +     */
3931 +    public void testMinimalCompletionStage_minimality() {
3932 +        if (!testImplementationDetails) return;
3933 +        Function<Method, String> toSignature =
3934 +            (method) -> method.getName() + Arrays.toString(method.getParameterTypes());
3935 +        Predicate<Method> isNotStatic =
3936 +            (method) -> (method.getModifiers() & Modifier.STATIC) == 0;
3937 +        List<Method> minimalMethods =
3938 +            Stream.of(Object.class, CompletionStage.class)
3939 +            .flatMap((klazz) -> Stream.of(klazz.getMethods()))
3940 +            .filter(isNotStatic)
3941 +            .collect(Collectors.toList());
3942 +        // Methods from CompletableFuture permitted NOT to throw UOE
3943 +        String[] signatureWhitelist = {
3944 +            "newIncompleteFuture[]",
3945 +            "defaultExecutor[]",
3946 +            "minimalCompletionStage[]",
3947 +            "copy[]",
3948 +        };
3949 +        Set<String> permittedMethodSignatures =
3950 +            Stream.concat(minimalMethods.stream().map(toSignature),
3951 +                          Stream.of(signatureWhitelist))
3952 +            .collect(Collectors.toSet());
3953 +        List<Method> allMethods = Stream.of(CompletableFuture.class.getMethods())
3954 +            .filter(isNotStatic)
3955 +            .filter((method) -> !permittedMethodSignatures.contains(toSignature.apply(method)))
3956 +            .collect(Collectors.toList());
3957 +
3958 +        CompletionStage<Integer> minimalStage =
3959 +            new CompletableFuture<Integer>().minimalCompletionStage();
3960 +
3961 +        List<Method> bugs = new ArrayList<>();
3962 +        for (Method method : allMethods) {
3963 +            Class<?>[] parameterTypes = method.getParameterTypes();
3964 +            Object[] args = new Object[parameterTypes.length];
3965 +            // Manufacture boxed primitives for primitive params
3966 +            for (int i = 0; i < args.length; i++) {
3967 +                Class<?> type = parameterTypes[i];
3968 +                if (parameterTypes[i] == boolean.class)
3969 +                    args[i] = false;
3970 +                else if (parameterTypes[i] == int.class)
3971 +                    args[i] = 0;
3972 +                else if (parameterTypes[i] == long.class)
3973 +                    args[i] = 0L;
3974 +            }
3975 +            try {
3976 +                method.invoke(minimalStage, args);
3977 +                bugs.add(method);
3978 +            }
3979 +            catch (java.lang.reflect.InvocationTargetException expected) {
3980 +                if (! (expected.getCause() instanceof UnsupportedOperationException)) {
3981 +                    bugs.add(method);
3982 +                    // expected.getCause().printStackTrace();
3983 +                }
3984 +            }
3985 +            catch (ReflectiveOperationException bad) { throw new Error(bad); }
3986 +        }
3987 +        if (!bugs.isEmpty())
3988 +            throw new Error("Methods did not throw UOE: " + bugs.toString());
3989 +    }
3990 +
3991 +    static class Monad {
3992 +        static class ZeroException extends RuntimeException {
3993 +            public ZeroException() { super("monadic zero"); }
3994 +        }
3995 +        // "return", "unit"
3996 +        static <T> CompletableFuture<T> unit(T value) {
3997 +            return completedFuture(value);
3998 +        }
3999 +        // monadic zero ?
4000 +        static <T> CompletableFuture<T> zero() {
4001 +            return failedFuture(new ZeroException());
4002 +        }
4003 +        // >=>
4004 +        static <T,U,V> Function<T, CompletableFuture<V>> compose
4005 +            (Function<T, CompletableFuture<U>> f,
4006 +             Function<U, CompletableFuture<V>> g) {
4007 +            return (x) -> f.apply(x).thenCompose(g);
4008 +        }
4009 +
4010 +        static void assertZero(CompletableFuture<?> f) {
4011 +            try {
4012 +                f.getNow(null);
4013 +                throw new AssertionFailedError("should throw");
4014 +            } catch (CompletionException success) {
4015 +                assertTrue(success.getCause() instanceof ZeroException);
4016 +            }
4017 +        }
4018 +
4019 +        static <T> void assertFutureEquals(CompletableFuture<T> f,
4020 +                                           CompletableFuture<T> g) {
4021 +            T fval = null, gval = null;
4022 +            Throwable fex = null, gex = null;
4023 +
4024 +            try { fval = f.get(); }
4025 +            catch (ExecutionException ex) { fex = ex.getCause(); }
4026 +            catch (Throwable ex) { fex = ex; }
4027 +
4028 +            try { gval = g.get(); }
4029 +            catch (ExecutionException ex) { gex = ex.getCause(); }
4030 +            catch (Throwable ex) { gex = ex; }
4031 +
4032 +            if (fex != null || gex != null)
4033 +                assertSame(fex.getClass(), gex.getClass());
4034 +            else
4035 +                assertEquals(fval, gval);
4036 +        }
4037 +
4038 +        static class PlusFuture<T> extends CompletableFuture<T> {
4039 +            AtomicReference<Throwable> firstFailure = new AtomicReference<>(null);
4040 +        }
4041 +
4042 +        /** Implements "monadic plus". */
4043 +        static <T> CompletableFuture<T> plus(CompletableFuture<? extends T> f,
4044 +                                             CompletableFuture<? extends T> g) {
4045 +            PlusFuture<T> plus = new PlusFuture<T>();
4046 +            BiConsumer<T, Throwable> action = (T result, Throwable ex) -> {
4047 +                try {
4048 +                    if (ex == null) {
4049 +                        if (plus.complete(result))
4050 +                            if (plus.firstFailure.get() != null)
4051 +                                plus.firstFailure.set(null);
4052 +                    }
4053 +                    else if (plus.firstFailure.compareAndSet(null, ex)) {
4054 +                        if (plus.isDone())
4055 +                            plus.firstFailure.set(null);
4056 +                    }
4057 +                    else {
4058 +                        // first failure has precedence
4059 +                        Throwable first = plus.firstFailure.getAndSet(null);
4060 +
4061 +                        // may fail with "Self-suppression not permitted"
4062 +                        try { first.addSuppressed(ex); }
4063 +                        catch (Exception ignored) {}
4064 +
4065 +                        plus.completeExceptionally(first);
4066 +                    }
4067 +                } catch (Throwable unexpected) {
4068 +                    plus.completeExceptionally(unexpected);
4069 +                }
4070 +            };
4071 +            f.whenComplete(action);
4072 +            g.whenComplete(action);
4073 +            return plus;
4074 +        }
4075 +    }
4076 +
4077 +    /**
4078 +     * CompletableFuture is an additive monad - sort of.
4079 +     * https://en.wikipedia.org/wiki/Monad_(functional_programming)#Additive_monads
4080 +     */
4081 +    public void testAdditiveMonad() throws Throwable {
4082 +        Function<Long, CompletableFuture<Long>> unit = Monad::unit;
4083 +        CompletableFuture<Long> zero = Monad.zero();
4084 +
4085 +        // Some mutually non-commutative functions
4086 +        Function<Long, CompletableFuture<Long>> triple
4087 +            = (x) -> Monad.unit(3 * x);
4088 +        Function<Long, CompletableFuture<Long>> inc
4089 +            = (x) -> Monad.unit(x + 1);
4090 +
4091 +        // unit is a right identity: m >>= unit === m
4092 +        Monad.assertFutureEquals(inc.apply(5L).thenCompose(unit),
4093 +                                 inc.apply(5L));
4094 +        // unit is a left identity: (unit x) >>= f === f x
4095 +        Monad.assertFutureEquals(unit.apply(5L).thenCompose(inc),
4096 +                                 inc.apply(5L));
4097 +
4098 +        // associativity: (m >>= f) >>= g === m >>= ( \x -> (f x >>= g) )
4099 +        Monad.assertFutureEquals(
4100 +            unit.apply(5L).thenCompose(inc).thenCompose(triple),
4101 +            unit.apply(5L).thenCompose((x) -> inc.apply(x).thenCompose(triple)));
4102 +
4103 +        // The case for CompletableFuture as an additive monad is weaker...
4104 +
4105 +        // zero is a monadic zero
4106 +        Monad.assertZero(zero);
4107 +
4108 +        // left zero: zero >>= f === zero
4109 +        Monad.assertZero(zero.thenCompose(inc));
4110 +        // right zero: f >>= (\x -> zero) === zero
4111 +        Monad.assertZero(inc.apply(5L).thenCompose((x) -> zero));
4112 +
4113 +        // f plus zero === f
4114 +        Monad.assertFutureEquals(Monad.unit(5L),
4115 +                                 Monad.plus(Monad.unit(5L), zero));
4116 +        // zero plus f === f
4117 +        Monad.assertFutureEquals(Monad.unit(5L),
4118 +                                 Monad.plus(zero, Monad.unit(5L)));
4119 +        // zero plus zero === zero
4120 +        Monad.assertZero(Monad.plus(zero, zero));
4121 +        {
4122 +            CompletableFuture<Long> f = Monad.plus(Monad.unit(5L),
4123 +                                                   Monad.unit(8L));
4124 +            // non-determinism
4125 +            assertTrue(f.get() == 5L || f.get() == 8L);
4126 +        }
4127 +
4128 +        CompletableFuture<Long> godot = new CompletableFuture<>();
4129 +        // f plus godot === f (doesn't wait for godot)
4130 +        Monad.assertFutureEquals(Monad.unit(5L),
4131 +                                 Monad.plus(Monad.unit(5L), godot));
4132 +        // godot plus f === f (doesn't wait for godot)
4133 +        Monad.assertFutureEquals(Monad.unit(5L),
4134 +                                 Monad.plus(godot, Monad.unit(5L)));
4135 +    }
4136 +
4137 +    /**
4138 +     * A single CompletableFuture with many dependents.
4139 +     * A demo of scalability - runtime is O(n).
4140 +     */
4141 +    public void testManyDependents() throws Throwable {
4142 +        final int n = expensiveTests ? 1_000_000 : 10;
4143 +        final CompletableFuture<Void> head = new CompletableFuture<>();
4144 +        final CompletableFuture<Void> complete = CompletableFuture.completedFuture((Void)null);
4145 +        final AtomicInteger count = new AtomicInteger(0);
4146 +        for (int i = 0; i < n; i++) {
4147 +            head.thenRun(() -> count.getAndIncrement());
4148 +            head.thenAccept((x) -> count.getAndIncrement());
4149 +            head.thenApply((x) -> count.getAndIncrement());
4150 +
4151 +            head.runAfterBoth(complete, () -> count.getAndIncrement());
4152 +            head.thenAcceptBoth(complete, (x, y) -> count.getAndIncrement());
4153 +            head.thenCombine(complete, (x, y) -> count.getAndIncrement());
4154 +            complete.runAfterBoth(head, () -> count.getAndIncrement());
4155 +            complete.thenAcceptBoth(head, (x, y) -> count.getAndIncrement());
4156 +            complete.thenCombine(head, (x, y) -> count.getAndIncrement());
4157 +
4158 +            head.runAfterEither(new CompletableFuture<Void>(), () -> count.getAndIncrement());
4159 +            head.acceptEither(new CompletableFuture<Void>(), (x) -> count.getAndIncrement());
4160 +            head.applyToEither(new CompletableFuture<Void>(), (x) -> count.getAndIncrement());
4161 +            new CompletableFuture<Void>().runAfterEither(head, () -> count.getAndIncrement());
4162 +            new CompletableFuture<Void>().acceptEither(head, (x) -> count.getAndIncrement());
4163 +            new CompletableFuture<Void>().applyToEither(head, (x) -> count.getAndIncrement());
4164 +        }
4165 +        head.complete(null);
4166 +        assertEquals(5 * 3 * n, count.get());
4167 +    }
4168 +
4169 +    /** ant -Dvmoptions=-Xmx8m -Djsr166.expensiveTests=true -Djsr166.tckTestClass=CompletableFutureTest tck */
4170 +    public void testCoCompletionGarbageRetention() throws Throwable {
4171 +        final int n = expensiveTests ? 1_000_000 : 10;
4172 +        final CompletableFuture<Integer> incomplete = new CompletableFuture<>();
4173 +        CompletableFuture<Integer> f;
4174 +        for (int i = 0; i < n; i++) {
4175 +            f = new CompletableFuture<>();
4176 +            f.runAfterEither(incomplete, () -> {});
4177 +            f.complete(null);
4178 +
4179 +            f = new CompletableFuture<>();
4180 +            f.acceptEither(incomplete, (x) -> {});
4181 +            f.complete(null);
4182 +
4183 +            f = new CompletableFuture<>();
4184 +            f.applyToEither(incomplete, (x) -> x);
4185 +            f.complete(null);
4186 +
4187 +            f = new CompletableFuture<>();
4188 +            CompletableFuture.anyOf(new CompletableFuture<?>[] { f, incomplete });
4189 +            f.complete(null);
4190 +        }
4191 +
4192 +        for (int i = 0; i < n; i++) {
4193 +            f = new CompletableFuture<>();
4194 +            incomplete.runAfterEither(f, () -> {});
4195 +            f.complete(null);
4196 +
4197 +            f = new CompletableFuture<>();
4198 +            incomplete.acceptEither(f, (x) -> {});
4199 +            f.complete(null);
4200 +
4201 +            f = new CompletableFuture<>();
4202 +            incomplete.applyToEither(f, (x) -> x);
4203 +            f.complete(null);
4204 +
4205 +            f = new CompletableFuture<>();
4206 +            CompletableFuture.anyOf(new CompletableFuture<?>[] { incomplete, f });
4207 +            f.complete(null);
4208 +        }
4209 +    }
4210 +
4211 +    /*
4212 +     * Tests below currently fail in stress mode due to memory retention.
4213 +     * ant -Dvmoptions=-Xmx8m -Djsr166.expensiveTests=true -Djsr166.tckTestClass=CompletableFutureTest tck
4214 +     */
4215 +
4216 +    /** Checks for garbage retention with anyOf. */
4217 +    public void testAnyOfGarbageRetention() throws Throwable {
4218 +        for (Integer v : new Integer[] { 1, null })
4219 +    {
4220 +        final int n = expensiveTests ? 100_000 : 10;
4221 +        CompletableFuture<Integer>[] fs
4222 +            = (CompletableFuture<Integer>[]) new CompletableFuture<?>[100];
4223 +        for (int i = 0; i < fs.length; i++)
4224 +            fs[i] = new CompletableFuture<>();
4225 +        fs[fs.length - 1].complete(v);
4226 +        for (int i = 0; i < n; i++)
4227 +            checkCompletedNormally(CompletableFuture.anyOf(fs), v);
4228 +    }}
4229 +
4230 +    /** Checks for garbage retention with allOf. */
4231 +    public void testCancelledAllOfGarbageRetention() throws Throwable {
4232 +        final int n = expensiveTests ? 100_000 : 10;
4233 +        CompletableFuture<Integer>[] fs
4234 +            = (CompletableFuture<Integer>[]) new CompletableFuture<?>[100];
4235 +        for (int i = 0; i < fs.length; i++)
4236 +            fs[i] = new CompletableFuture<>();
4237 +        for (int i = 0; i < n; i++)
4238 +            assertTrue(CompletableFuture.allOf(fs).cancel(false));
4239 +    }
4240 +
4241 + //     static <U> U join(CompletionStage<U> stage) {
4242 + //         CompletableFuture<U> f = new CompletableFuture<>();
4243 + //         stage.whenComplete((v, ex) -> {
4244 + //             if (ex != null) f.completeExceptionally(ex); else f.complete(v);
4245 + //         });
4246 + //         return f.join();
4247 + //     }
4248 +
4249 + //     static <U> boolean isDone(CompletionStage<U> stage) {
4250 + //         CompletableFuture<U> f = new CompletableFuture<>();
4251 + //         stage.whenComplete((v, ex) -> {
4252 + //             if (ex != null) f.completeExceptionally(ex); else f.complete(v);
4253 + //         });
4254 + //         return f.isDone();
4255 + //     }
4256 +
4257 + //     static <U> U join2(CompletionStage<U> stage) {
4258 + //         return stage.toCompletableFuture().copy().join();
4259 + //     }
4260 +
4261 + //     static <U> boolean isDone2(CompletionStage<U> stage) {
4262 + //         return stage.toCompletableFuture().copy().isDone();
4263 + //     }
4264 +
4265   }

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