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Comparing jsr166/src/test/tck/CompletableFutureTest.java (file contents):
Revision 1.196 by jsr166, Sun Jul 22 20:17:46 2018 UTC vs.
Revision 1.211 by jsr166, Mon Sep 24 14:45:19 2018 UTC

# Line 74 | Line 74 | public class CompletableFutureTest exten
74          catch (Throwable fail) { threadUnexpectedException(fail); }
75      }
76  
77 <    <T> void checkCompletedNormally(CompletableFuture<T> f, T value) {
78 <        checkTimedGet(f, value);
77 >    <T> void checkCompletedNormally(CompletableFuture<T> f, T expectedValue) {
78 >        checkTimedGet(f, expectedValue);
79  
80 <        assertEquals(value, f.join());
81 <        assertEquals(value, f.getNow(null));
80 >        assertEquals(expectedValue, f.join());
81 >        assertEquals(expectedValue, f.getNow(null));
82  
83          T result = null;
84          try {
85              result = f.get();
86          } catch (Throwable fail) { threadUnexpectedException(fail); }
87 <        assertEquals(value, result);
87 >        assertEquals(expectedValue, result);
88  
89          assertTrue(f.isDone());
90          assertFalse(f.isCancelled());
# Line 551 | Line 551 | public class CompletableFutureTest exten
551          public CompletableFuture<Integer> apply(Integer x) {
552              invoked();
553              value = x;
554 <            CompletableFuture<Integer> f = new CompletableFuture<>();
555 <            assertTrue(f.complete(inc(x)));
556 <            return f;
554 >            return CompletableFuture.completedFuture(inc(x));
555 >        }
556 >    }
557 >
558 >    static class FailingExceptionalCompletableFutureFunction extends CheckedAction
559 >        implements Function<Throwable, CompletableFuture<Integer>>
560 >    {
561 >        final CFException ex;
562 >        FailingExceptionalCompletableFutureFunction(ExecutionMode m) { super(m); ex = new CFException(); }
563 >        public CompletableFuture<Integer> apply(Throwable x) {
564 >            invoked();
565 >            throw ex;
566 >        }
567 >    }
568 >
569 >    static class ExceptionalCompletableFutureFunction extends CheckedAction
570 >        implements Function<Throwable, CompletionStage<Integer>> {
571 >        final Integer value = 3;
572 >        ExceptionalCompletableFutureFunction(ExecutionMode m) { super(m); }
573 >        public CompletionStage<Integer> apply(Throwable x) {
574 >            invoked();
575 >            return CompletableFuture.completedFuture(value);
576          }
577      }
578  
# Line 672 | Line 691 | public class CompletableFutureTest exten
691                   Function<? super T,U> a) {
692                  return f.applyToEither(g, a);
693              }
694 +            public <T> CompletableFuture<T> exceptionally
695 +                (CompletableFuture<T> f,
696 +                 Function<Throwable, ? extends T> fn) {
697 +                return f.exceptionally(fn);
698 +            }
699 +            public <T> CompletableFuture<T> exceptionallyCompose
700 +                (CompletableFuture<T> f, Function<Throwable, ? extends CompletionStage<T>> fn) {
701 +                return f.exceptionallyCompose(fn);
702 +            }
703          },
676
704          ASYNC {
705              public void checkExecutionMode() {
706                  assertEquals(defaultExecutorIsCommonPool,
# Line 746 | Line 773 | public class CompletableFutureTest exten
773                   Function<? super T,U> a) {
774                  return f.applyToEitherAsync(g, a);
775              }
776 +            public <T> CompletableFuture<T> exceptionally
777 +                (CompletableFuture<T> f,
778 +                 Function<Throwable, ? extends T> fn) {
779 +                return f.exceptionallyAsync(fn);
780 +            }
781 +
782 +            public <T> CompletableFuture<T> exceptionallyCompose
783 +                (CompletableFuture<T> f, Function<Throwable, ? extends CompletionStage<T>> fn) {
784 +                return f.exceptionallyComposeAsync(fn);
785 +            }
786 +
787          },
788  
789          EXECUTOR {
# Line 819 | Line 857 | public class CompletableFutureTest exten
857                   Function<? super T,U> a) {
858                  return f.applyToEitherAsync(g, a, new ThreadExecutor());
859              }
860 +            public <T> CompletableFuture<T> exceptionally
861 +                (CompletableFuture<T> f,
862 +                 Function<Throwable, ? extends T> fn) {
863 +                return f.exceptionallyAsync(fn, new ThreadExecutor());
864 +            }
865 +            public <T> CompletableFuture<T> exceptionallyCompose
866 +                (CompletableFuture<T> f, Function<Throwable, ? extends CompletionStage<T>> fn) {
867 +                return f.exceptionallyComposeAsync(fn, new ThreadExecutor());
868 +            }
869 +
870          };
871  
872          public abstract void checkExecutionMode();
# Line 861 | Line 909 | public class CompletableFutureTest exten
909              (CompletableFuture<T> f,
910               CompletionStage<? extends T> g,
911               Function<? super T,U> a);
912 +        public abstract <T> CompletableFuture<T> exceptionally
913 +            (CompletableFuture<T> f,
914 +             Function<Throwable, ? extends T> fn);
915 +        public abstract <T> CompletableFuture<T> exceptionallyCompose
916 +            (CompletableFuture<T> f,
917 +             Function<Throwable, ? extends CompletionStage<T>> fn);
918      }
919  
920      /**
# Line 868 | Line 922 | public class CompletableFutureTest exten
922       * normally, and source result is propagated
923       */
924      public void testExceptionally_normalCompletion() {
925 +        for (ExecutionMode m : ExecutionMode.values())
926          for (boolean createIncomplete : new boolean[] { true, false })
927          for (Integer v1 : new Integer[] { 1, null })
928      {
874        final AtomicInteger a = new AtomicInteger(0);
929          final CompletableFuture<Integer> f = new CompletableFuture<>();
930          if (!createIncomplete) assertTrue(f.complete(v1));
931 <        final CompletableFuture<Integer> g = f.exceptionally
932 <            ((Throwable t) -> {
879 <                a.getAndIncrement();
931 >        final CompletableFuture<Integer> g = m.exceptionally
932 >            (f, (Throwable t) -> {
933                  threadFail("should not be called");
934                  return null;            // unreached
935              });
# Line 884 | Line 937 | public class CompletableFutureTest exten
937  
938          checkCompletedNormally(g, v1);
939          checkCompletedNormally(f, v1);
887        assertEquals(0, a.get());
940      }}
941  
942      /**
# Line 892 | Line 944 | public class CompletableFutureTest exten
944       * exception
945       */
946      public void testExceptionally_exceptionalCompletion() {
947 +        for (ExecutionMode m : ExecutionMode.values())
948          for (boolean createIncomplete : new boolean[] { true, false })
949          for (Integer v1 : new Integer[] { 1, null })
950      {
# Line 899 | Line 952 | public class CompletableFutureTest exten
952          final CFException ex = new CFException();
953          final CompletableFuture<Integer> f = new CompletableFuture<>();
954          if (!createIncomplete) f.completeExceptionally(ex);
955 <        final CompletableFuture<Integer> g = f.exceptionally
956 <            ((Throwable t) -> {
957 <                ExecutionMode.SYNC.checkExecutionMode();
955 >        final CompletableFuture<Integer> g = m.exceptionally
956 >            (f, (Throwable t) -> {
957 >                m.checkExecutionMode();
958                  threadAssertSame(t, ex);
959                  a.getAndIncrement();
960                  return v1;
# Line 917 | Line 970 | public class CompletableFutureTest exten
970       * exceptionally with that exception
971       */
972      public void testExceptionally_exceptionalCompletionActionFailed() {
973 +        for (ExecutionMode m : ExecutionMode.values())
974          for (boolean createIncomplete : new boolean[] { true, false })
975      {
976          final AtomicInteger a = new AtomicInteger(0);
# Line 924 | Line 978 | public class CompletableFutureTest exten
978          final CFException ex2 = new CFException();
979          final CompletableFuture<Integer> f = new CompletableFuture<>();
980          if (!createIncomplete) f.completeExceptionally(ex1);
981 <        final CompletableFuture<Integer> g = f.exceptionally
982 <            ((Throwable t) -> {
983 <                ExecutionMode.SYNC.checkExecutionMode();
981 >        final CompletableFuture<Integer> g = m.exceptionally
982 >            (f, (Throwable t) -> {
983 >                m.checkExecutionMode();
984                  threadAssertSame(t, ex1);
985                  a.getAndIncrement();
986                  throw ex2;
# Line 3097 | Line 3151 | public class CompletableFutureTest exten
3151          checkCompletedNormally(f, v1);
3152      }}
3153  
3154 +    /**
3155 +     * exceptionallyCompose result completes normally after normal
3156 +     * completion of source
3157 +     */
3158 +    public void testExceptionallyCompose_normalCompletion() {
3159 +        for (ExecutionMode m : ExecutionMode.values())
3160 +        for (boolean createIncomplete : new boolean[] { true, false })
3161 +        for (Integer v1 : new Integer[] { 1, null })
3162 +    {
3163 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
3164 +        final ExceptionalCompletableFutureFunction r =
3165 +            new ExceptionalCompletableFutureFunction(m);
3166 +        if (!createIncomplete) assertTrue(f.complete(v1));
3167 +        final CompletableFuture<Integer> g = m.exceptionallyCompose(f, r);
3168 +        if (createIncomplete) assertTrue(f.complete(v1));
3169 +
3170 +        checkCompletedNormally(f, v1);
3171 +        checkCompletedNormally(g, v1);
3172 +        r.assertNotInvoked();
3173 +    }}
3174 +
3175 +    /**
3176 +     * exceptionallyCompose result completes normally after exceptional
3177 +     * completion of source
3178 +     */
3179 +    public void testExceptionallyCompose_exceptionalCompletion() {
3180 +        for (ExecutionMode m : ExecutionMode.values())
3181 +        for (boolean createIncomplete : new boolean[] { true, false })
3182 +    {
3183 +        final CFException ex = new CFException();
3184 +        final ExceptionalCompletableFutureFunction r =
3185 +            new ExceptionalCompletableFutureFunction(m);
3186 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
3187 +        if (!createIncomplete) f.completeExceptionally(ex);
3188 +        final CompletableFuture<Integer> g = m.exceptionallyCompose(f, r);
3189 +        if (createIncomplete) f.completeExceptionally(ex);
3190 +
3191 +        checkCompletedExceptionally(f, ex);
3192 +        checkCompletedNormally(g, r.value);
3193 +        r.assertInvoked();
3194 +    }}
3195 +
3196 +    /**
3197 +     * exceptionallyCompose completes exceptionally on exception if action does
3198 +     */
3199 +    public void testExceptionallyCompose_actionFailed() {
3200 +        for (ExecutionMode m : ExecutionMode.values())
3201 +        for (boolean createIncomplete : new boolean[] { true, false })
3202 +        for (Integer v1 : new Integer[] { 1, null })
3203 +    {
3204 +        final CFException ex = new CFException();
3205 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
3206 +        final FailingExceptionalCompletableFutureFunction r
3207 +            = new FailingExceptionalCompletableFutureFunction(m);
3208 +        if (!createIncomplete) f.completeExceptionally(ex);
3209 +        final CompletableFuture<Integer> g = m.exceptionallyCompose(f, r);
3210 +        if (createIncomplete) f.completeExceptionally(ex);
3211 +
3212 +        checkCompletedExceptionally(f, ex);
3213 +        checkCompletedWithWrappedException(g, r.ex);
3214 +        r.assertInvoked();
3215 +    }}
3216 +
3217 +    /**
3218 +     * exceptionallyCompose result completes exceptionally if the
3219 +     * result of the action does
3220 +     */
3221 +    public void testExceptionallyCompose_actionReturnsFailingFuture() {
3222 +        for (ExecutionMode m : ExecutionMode.values())
3223 +        for (int order = 0; order < 6; order++)
3224 +        for (Integer v1 : new Integer[] { 1, null })
3225 +    {
3226 +        final CFException ex0 = new CFException();
3227 +        final CFException ex = new CFException();
3228 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
3229 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
3230 +        final CompletableFuture<Integer> h;
3231 +        // Test all permutations of orders
3232 +        switch (order) {
3233 +        case 0:
3234 +            assertTrue(f.completeExceptionally(ex0));
3235 +            assertTrue(g.completeExceptionally(ex));
3236 +            h = m.exceptionallyCompose(f, (x -> g));
3237 +            break;
3238 +        case 1:
3239 +            assertTrue(f.completeExceptionally(ex0));
3240 +            h = m.exceptionallyCompose(f, (x -> g));
3241 +            assertTrue(g.completeExceptionally(ex));
3242 +            break;
3243 +        case 2:
3244 +            assertTrue(g.completeExceptionally(ex));
3245 +            assertTrue(f.completeExceptionally(ex0));
3246 +            h = m.exceptionallyCompose(f, (x -> g));
3247 +            break;
3248 +        case 3:
3249 +            assertTrue(g.completeExceptionally(ex));
3250 +            h = m.exceptionallyCompose(f, (x -> g));
3251 +            assertTrue(f.completeExceptionally(ex0));
3252 +            break;
3253 +        case 4:
3254 +            h = m.exceptionallyCompose(f, (x -> g));
3255 +            assertTrue(f.completeExceptionally(ex0));
3256 +            assertTrue(g.completeExceptionally(ex));
3257 +            break;
3258 +        case 5:
3259 +            h = m.exceptionallyCompose(f, (x -> g));
3260 +            assertTrue(f.completeExceptionally(ex0));
3261 +            assertTrue(g.completeExceptionally(ex));
3262 +            break;
3263 +        default: throw new AssertionError();
3264 +        }
3265 +
3266 +        checkCompletedExceptionally(g, ex);
3267 +        checkCompletedWithWrappedException(h, ex);
3268 +        checkCompletedExceptionally(f, ex0);
3269 +    }}
3270 +
3271      // other static methods
3272  
3273      /**
# Line 4508 | Line 4679 | public class CompletableFutureTest exten
4679   //         return stage.toCompletableFuture().copy().isDone();
4680   //     }
4681  
4682 +    // For testing default implementations
4683 +    // Only non-default interface methods defined.
4684 +    static final class DelegatedCompletionStage<T> implements CompletionStage<T> {
4685 +        final CompletableFuture<T> cf;
4686 +        DelegatedCompletionStage(CompletableFuture<T> cf) { this.cf = cf; }
4687 +        public CompletableFuture<T> toCompletableFuture() {
4688 +            return cf; }
4689 +        public CompletionStage<Void> thenRun
4690 +            (Runnable action) {
4691 +            return cf.thenRun(action); }
4692 +        public CompletionStage<Void> thenRunAsync
4693 +            (Runnable action) {
4694 +            return cf.thenRunAsync(action); }
4695 +        public CompletionStage<Void> thenRunAsync
4696 +            (Runnable action,
4697 +             Executor executor) {
4698 +            return cf.thenRunAsync(action, executor); }
4699 +        public CompletionStage<Void> thenAccept
4700 +            (Consumer<? super T> action) {
4701 +            return cf.thenAccept(action); }
4702 +        public CompletionStage<Void> thenAcceptAsync
4703 +            (Consumer<? super T> action) {
4704 +            return cf.thenAcceptAsync(action); }
4705 +        public CompletionStage<Void> thenAcceptAsync
4706 +            (Consumer<? super T> action,
4707 +             Executor executor) {
4708 +            return cf.thenAcceptAsync(action, executor); }
4709 +        public <U> CompletionStage<U> thenApply
4710 +            (Function<? super T,? extends U> a) {
4711 +            return cf.thenApply(a); }
4712 +        public <U> CompletionStage<U> thenApplyAsync
4713 +            (Function<? super T,? extends U> fn) {
4714 +            return cf.thenApplyAsync(fn); }
4715 +        public <U> CompletionStage<U> thenApplyAsync
4716 +            (Function<? super T,? extends U> fn,
4717 +             Executor executor) {
4718 +            return cf.thenApplyAsync(fn, executor); }
4719 +        public <U,V> CompletionStage<V> thenCombine
4720 +            (CompletionStage<? extends U> other,
4721 +             BiFunction<? super T,? super U,? extends V> fn) {
4722 +            return cf.thenCombine(other, fn); }
4723 +        public <U,V> CompletionStage<V> thenCombineAsync
4724 +            (CompletionStage<? extends U> other,
4725 +             BiFunction<? super T,? super U,? extends V> fn) {
4726 +            return cf.thenCombineAsync(other, fn); }
4727 +        public <U,V> CompletionStage<V> thenCombineAsync
4728 +            (CompletionStage<? extends U> other,
4729 +             BiFunction<? super T,? super U,? extends V> fn,
4730 +             Executor executor) {
4731 +            return cf.thenCombineAsync(other, fn, executor); }
4732 +        public <U> CompletionStage<Void> thenAcceptBoth
4733 +            (CompletionStage<? extends U> other,
4734 +             BiConsumer<? super T, ? super U> action) {
4735 +            return cf.thenAcceptBoth(other, action); }
4736 +        public <U> CompletionStage<Void> thenAcceptBothAsync
4737 +            (CompletionStage<? extends U> other,
4738 +             BiConsumer<? super T, ? super U> action) {
4739 +            return cf.thenAcceptBothAsync(other, action); }
4740 +        public <U> CompletionStage<Void> thenAcceptBothAsync
4741 +            (CompletionStage<? extends U> other,
4742 +             BiConsumer<? super T, ? super U> action,
4743 +             Executor executor) {
4744 +            return cf.thenAcceptBothAsync(other, action, executor); }
4745 +        public CompletionStage<Void> runAfterBoth
4746 +            (CompletionStage<?> other,
4747 +             Runnable action) {
4748 +            return cf.runAfterBoth(other, action); }
4749 +        public CompletionStage<Void> runAfterBothAsync
4750 +            (CompletionStage<?> other,
4751 +             Runnable action) {
4752 +            return cf.runAfterBothAsync(other, action); }
4753 +        public CompletionStage<Void> runAfterBothAsync
4754 +            (CompletionStage<?> other,
4755 +             Runnable action,
4756 +             Executor executor) {
4757 +            return cf.runAfterBothAsync(other, action, executor); }
4758 +        public <U> CompletionStage<U> applyToEither
4759 +            (CompletionStage<? extends T> other,
4760 +             Function<? super T, U> fn) {
4761 +            return cf.applyToEither(other, fn); }
4762 +        public <U> CompletionStage<U> applyToEitherAsync
4763 +            (CompletionStage<? extends T> other,
4764 +             Function<? super T, U> fn) {
4765 +            return cf.applyToEitherAsync(other, fn); }
4766 +        public <U> CompletionStage<U> applyToEitherAsync
4767 +            (CompletionStage<? extends T> other,
4768 +             Function<? super T, U> fn,
4769 +             Executor executor) {
4770 +            return cf.applyToEitherAsync(other, fn, executor); }
4771 +        public CompletionStage<Void> acceptEither
4772 +            (CompletionStage<? extends T> other,
4773 +             Consumer<? super T> action) {
4774 +            return cf.acceptEither(other, action); }
4775 +        public CompletionStage<Void> acceptEitherAsync
4776 +            (CompletionStage<? extends T> other,
4777 +             Consumer<? super T> action) {
4778 +            return cf.acceptEitherAsync(other, action); }
4779 +        public CompletionStage<Void> acceptEitherAsync
4780 +            (CompletionStage<? extends T> other,
4781 +             Consumer<? super T> action,
4782 +             Executor executor) {
4783 +            return cf.acceptEitherAsync(other, action, executor); }
4784 +        public CompletionStage<Void> runAfterEither
4785 +            (CompletionStage<?> other,
4786 +             Runnable action) {
4787 +            return cf.runAfterEither(other, action); }
4788 +        public CompletionStage<Void> runAfterEitherAsync
4789 +            (CompletionStage<?> other,
4790 +             Runnable action) {
4791 +            return cf.runAfterEitherAsync(other, action); }
4792 +        public CompletionStage<Void> runAfterEitherAsync
4793 +            (CompletionStage<?> other,
4794 +             Runnable action,
4795 +             Executor executor) {
4796 +            return cf.runAfterEitherAsync(other, action, executor); }
4797 +        public <U> CompletionStage<U> thenCompose
4798 +            (Function<? super T, ? extends CompletionStage<U>> fn) {
4799 +            return cf.thenCompose(fn); }
4800 +        public <U> CompletionStage<U> thenComposeAsync
4801 +            (Function<? super T, ? extends CompletionStage<U>> fn) {
4802 +            return cf.thenComposeAsync(fn); }
4803 +        public <U> CompletionStage<U> thenComposeAsync
4804 +            (Function<? super T, ? extends CompletionStage<U>> fn,
4805 +             Executor executor) {
4806 +            return cf.thenComposeAsync(fn, executor); }
4807 +        public <U> CompletionStage<U> handle
4808 +            (BiFunction<? super T, Throwable, ? extends U> fn) {
4809 +            return cf.handle(fn); }
4810 +        public <U> CompletionStage<U> handleAsync
4811 +            (BiFunction<? super T, Throwable, ? extends U> fn) {
4812 +            return cf.handleAsync(fn); }
4813 +        public <U> CompletionStage<U> handleAsync
4814 +            (BiFunction<? super T, Throwable, ? extends U> fn,
4815 +             Executor executor) {
4816 +            return cf.handleAsync(fn, executor); }
4817 +        public CompletionStage<T> whenComplete
4818 +            (BiConsumer<? super T, ? super Throwable> action) {
4819 +            return cf.whenComplete(action); }
4820 +        public CompletionStage<T> whenCompleteAsync
4821 +            (BiConsumer<? super T, ? super Throwable> action) {
4822 +            return cf.whenCompleteAsync(action); }
4823 +        public CompletionStage<T> whenCompleteAsync
4824 +            (BiConsumer<? super T, ? super Throwable> action,
4825 +             Executor executor) {
4826 +            return cf.whenCompleteAsync(action, executor); }
4827 +        public CompletionStage<T> exceptionally
4828 +            (Function<Throwable, ? extends T> fn) {
4829 +            return cf.exceptionally(fn); }
4830 +    }
4831 +
4832 +    /**
4833 +     * default-implemented exceptionallyAsync action is not invoked when
4834 +     * source completes normally, and source result is propagated
4835 +     */
4836 +    public void testDefaultExceptionallyAsync_normalCompletion() {
4837 +        for (boolean createIncomplete : new boolean[] { true, false })
4838 +        for (Integer v1 : new Integer[] { 1, null })
4839 +    {
4840 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
4841 +        final DelegatedCompletionStage<Integer> d =
4842 +            new DelegatedCompletionStage<Integer>(f);
4843 +        if (!createIncomplete) assertTrue(f.complete(v1));
4844 +        final CompletionStage<Integer> g = d.exceptionallyAsync
4845 +            ((Throwable t) -> {
4846 +                threadFail("should not be called");
4847 +                return null;            // unreached
4848 +            });
4849 +        if (createIncomplete) assertTrue(f.complete(v1));
4850 +
4851 +        checkCompletedNormally(g.toCompletableFuture(), v1);
4852 +    }}
4853 +
4854 +    /**
4855 +     * default-implemented exceptionallyAsync action completes with
4856 +     * function value on source exception
4857 +     */
4858 +    public void testDefaultExceptionallyAsync_exceptionalCompletion() {
4859 +        for (boolean createIncomplete : new boolean[] { true, false })
4860 +        for (Integer v1 : new Integer[] { 1, null })
4861 +    {
4862 +        final AtomicInteger a = new AtomicInteger(0);
4863 +        final CFException ex = new CFException();
4864 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
4865 +        final DelegatedCompletionStage<Integer> d =
4866 +            new DelegatedCompletionStage<Integer>(f);
4867 +        if (!createIncomplete) f.completeExceptionally(ex);
4868 +        final CompletionStage<Integer> g = d.exceptionallyAsync
4869 +            ((Throwable t) -> {
4870 +                threadAssertSame(t, ex);
4871 +                a.getAndIncrement();
4872 +                return v1;
4873 +            });
4874 +        if (createIncomplete) f.completeExceptionally(ex);
4875 +
4876 +        checkCompletedNormally(g.toCompletableFuture(), v1);
4877 +        assertEquals(1, a.get());
4878 +    }}
4879 +
4880 +    /**
4881 +     * Under default implementation, if an "exceptionally action"
4882 +     * throws an exception, it completes exceptionally with that
4883 +     * exception
4884 +     */
4885 +    public void testDefaultExceptionallyAsync_exceptionalCompletionActionFailed() {
4886 +        for (boolean createIncomplete : new boolean[] { true, false })
4887 +    {
4888 +        final AtomicInteger a = new AtomicInteger(0);
4889 +        final CFException ex1 = new CFException();
4890 +        final CFException ex2 = new CFException();
4891 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
4892 +        final DelegatedCompletionStage<Integer> d =
4893 +            new DelegatedCompletionStage<Integer>(f);
4894 +        if (!createIncomplete) f.completeExceptionally(ex1);
4895 +        final CompletionStage<Integer> g = d.exceptionallyAsync
4896 +            ((Throwable t) -> {
4897 +                threadAssertSame(t, ex1);
4898 +                a.getAndIncrement();
4899 +                throw ex2;
4900 +            });
4901 +        if (createIncomplete) f.completeExceptionally(ex1);
4902 +
4903 +        checkCompletedWithWrappedException(g.toCompletableFuture(), ex2);
4904 +        checkCompletedExceptionally(f, ex1);
4905 +        checkCompletedExceptionally(d.toCompletableFuture(), ex1);
4906 +        assertEquals(1, a.get());
4907 +    }}
4908 +
4909 +    /**
4910 +     * default exceptionallyCompose result completes normally after normal
4911 +     * completion of source
4912 +     */
4913 +    public void testDefaultExceptionallyCompose_normalCompletion() {
4914 +        for (boolean createIncomplete : new boolean[] { true, false })
4915 +        for (Integer v1 : new Integer[] { 1, null })
4916 +    {
4917 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
4918 +        final ExceptionalCompletableFutureFunction r =
4919 +            new ExceptionalCompletableFutureFunction(ExecutionMode.SYNC);
4920 +        final DelegatedCompletionStage<Integer> d =
4921 +            new DelegatedCompletionStage<Integer>(f);
4922 +        if (!createIncomplete) assertTrue(f.complete(v1));
4923 +        final CompletionStage<Integer> g = d.exceptionallyCompose(r);
4924 +        if (createIncomplete) assertTrue(f.complete(v1));
4925 +
4926 +        checkCompletedNormally(f, v1);
4927 +        checkCompletedNormally(g.toCompletableFuture(), v1);
4928 +        r.assertNotInvoked();
4929 +    }}
4930 +
4931 +    /**
4932 +     * default-implemented exceptionallyCompose result completes
4933 +     * normally after exceptional completion of source
4934 +     */
4935 +    public void testDefaultExceptionallyCompose_exceptionalCompletion() {
4936 +        for (boolean createIncomplete : new boolean[] { true, false })
4937 +    {
4938 +        final CFException ex = new CFException();
4939 +        final ExceptionalCompletableFutureFunction r =
4940 +            new ExceptionalCompletableFutureFunction(ExecutionMode.SYNC);
4941 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
4942 +        final DelegatedCompletionStage<Integer> d =
4943 +            new DelegatedCompletionStage<Integer>(f);
4944 +        if (!createIncomplete) f.completeExceptionally(ex);
4945 +        final CompletionStage<Integer> g = d.exceptionallyCompose(r);
4946 +        if (createIncomplete) f.completeExceptionally(ex);
4947 +
4948 +        checkCompletedExceptionally(f, ex);
4949 +        checkCompletedNormally(g.toCompletableFuture(), r.value);
4950 +        r.assertInvoked();
4951 +    }}
4952 +
4953 +    /**
4954 +     * default-implemented exceptionallyCompose completes
4955 +     * exceptionally on exception if action does
4956 +     */
4957 +    public void testDefaultExceptionallyCompose_actionFailed() {
4958 +        for (boolean createIncomplete : new boolean[] { true, false })
4959 +        for (Integer v1 : new Integer[] { 1, null })
4960 +    {
4961 +        final CFException ex = new CFException();
4962 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
4963 +        final FailingExceptionalCompletableFutureFunction r
4964 +            = new FailingExceptionalCompletableFutureFunction(ExecutionMode.SYNC);
4965 +        final DelegatedCompletionStage<Integer> d =
4966 +            new DelegatedCompletionStage<Integer>(f);
4967 +        if (!createIncomplete) f.completeExceptionally(ex);
4968 +        final CompletionStage<Integer> g = d.exceptionallyCompose(r);
4969 +        if (createIncomplete) f.completeExceptionally(ex);
4970 +
4971 +        checkCompletedExceptionally(f, ex);
4972 +        checkCompletedWithWrappedException(g.toCompletableFuture(), r.ex);
4973 +        r.assertInvoked();
4974 +    }}
4975 +
4976 +    /**
4977 +     * default exceptionallyComposeAsync result completes normally after normal
4978 +     * completion of source
4979 +     */
4980 +    public void testDefaultExceptionallyComposeAsync_normalCompletion() {
4981 +        for (boolean createIncomplete : new boolean[] { true, false })
4982 +        for (Integer v1 : new Integer[] { 1, null })
4983 +    {
4984 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
4985 +        final ExceptionalCompletableFutureFunction r =
4986 +            new ExceptionalCompletableFutureFunction(ExecutionMode.ASYNC);
4987 +        final DelegatedCompletionStage<Integer> d =
4988 +            new DelegatedCompletionStage<Integer>(f);
4989 +        if (!createIncomplete) assertTrue(f.complete(v1));
4990 +        final CompletionStage<Integer> g = d.exceptionallyComposeAsync(r);
4991 +        if (createIncomplete) assertTrue(f.complete(v1));
4992 +
4993 +        checkCompletedNormally(f, v1);
4994 +        checkCompletedNormally(g.toCompletableFuture(), v1);
4995 +        r.assertNotInvoked();
4996 +    }}
4997 +
4998 +    /**
4999 +     * default-implemented exceptionallyComposeAsync result completes
5000 +     * normally after exceptional completion of source
5001 +     */
5002 +    public void testDefaultExceptionallyComposeAsync_exceptionalCompletion() {
5003 +        for (boolean createIncomplete : new boolean[] { true, false })
5004 +    {
5005 +        final CFException ex = new CFException();
5006 +        final ExceptionalCompletableFutureFunction r =
5007 +            new ExceptionalCompletableFutureFunction(ExecutionMode.ASYNC);
5008 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
5009 +        final DelegatedCompletionStage<Integer> d =
5010 +            new DelegatedCompletionStage<Integer>(f);
5011 +        if (!createIncomplete) f.completeExceptionally(ex);
5012 +        final CompletionStage<Integer> g = d.exceptionallyComposeAsync(r);
5013 +        if (createIncomplete) f.completeExceptionally(ex);
5014 +
5015 +        checkCompletedExceptionally(f, ex);
5016 +        checkCompletedNormally(g.toCompletableFuture(), r.value);
5017 +        r.assertInvoked();
5018 +    }}
5019 +
5020 +    /**
5021 +     * default-implemented exceptionallyComposeAsync completes
5022 +     * exceptionally on exception if action does
5023 +     */
5024 +    public void testDefaultExceptionallyComposeAsync_actionFailed() {
5025 +        for (boolean createIncomplete : new boolean[] { true, false })
5026 +        for (Integer v1 : new Integer[] { 1, null })
5027 +    {
5028 +        final CFException ex = new CFException();
5029 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
5030 +        final FailingExceptionalCompletableFutureFunction r
5031 +            = new FailingExceptionalCompletableFutureFunction(ExecutionMode.ASYNC);
5032 +        final DelegatedCompletionStage<Integer> d =
5033 +            new DelegatedCompletionStage<Integer>(f);
5034 +        if (!createIncomplete) f.completeExceptionally(ex);
5035 +        final CompletionStage<Integer> g = d.exceptionallyComposeAsync(r);
5036 +        if (createIncomplete) f.completeExceptionally(ex);
5037 +
5038 +        checkCompletedExceptionally(f, ex);
5039 +        checkCompletedWithWrappedException(g.toCompletableFuture(), r.ex);
5040 +        r.assertInvoked();
5041 +    }}
5042 +
5043 +
5044 +    /**
5045 +     * default exceptionallyComposeAsync result completes normally after normal
5046 +     * completion of source
5047 +     */
5048 +    public void testDefaultExceptionallyComposeAsyncExecutor_normalCompletion() {
5049 +        for (boolean createIncomplete : new boolean[] { true, false })
5050 +        for (Integer v1 : new Integer[] { 1, null })
5051 +    {
5052 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
5053 +        final ExceptionalCompletableFutureFunction r =
5054 +            new ExceptionalCompletableFutureFunction(ExecutionMode.EXECUTOR);
5055 +        final DelegatedCompletionStage<Integer> d =
5056 +            new DelegatedCompletionStage<Integer>(f);
5057 +        if (!createIncomplete) assertTrue(f.complete(v1));
5058 +        final CompletionStage<Integer> g = d.exceptionallyComposeAsync(r, new ThreadExecutor());
5059 +        if (createIncomplete) assertTrue(f.complete(v1));
5060 +
5061 +        checkCompletedNormally(f, v1);
5062 +        checkCompletedNormally(g.toCompletableFuture(), v1);
5063 +        r.assertNotInvoked();
5064 +    }}
5065 +
5066 +    /**
5067 +     * default-implemented exceptionallyComposeAsync result completes
5068 +     * normally after exceptional completion of source
5069 +     */
5070 +    public void testDefaultExceptionallyComposeAsyncExecutor_exceptionalCompletion() {
5071 +        for (boolean createIncomplete : new boolean[] { true, false })
5072 +    {
5073 +        final CFException ex = new CFException();
5074 +        final ExceptionalCompletableFutureFunction r =
5075 +            new ExceptionalCompletableFutureFunction(ExecutionMode.EXECUTOR);
5076 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
5077 +        final DelegatedCompletionStage<Integer> d =
5078 +            new DelegatedCompletionStage<Integer>(f);
5079 +        if (!createIncomplete) f.completeExceptionally(ex);
5080 +        final CompletionStage<Integer> g = d.exceptionallyComposeAsync(r, new ThreadExecutor());
5081 +        if (createIncomplete) f.completeExceptionally(ex);
5082 +
5083 +        checkCompletedExceptionally(f, ex);
5084 +        checkCompletedNormally(g.toCompletableFuture(), r.value);
5085 +        r.assertInvoked();
5086 +    }}
5087 +
5088 +    /**
5089 +     * default-implemented exceptionallyComposeAsync completes
5090 +     * exceptionally on exception if action does
5091 +     */
5092 +    public void testDefaultExceptionallyComposeAsyncExecutor_actionFailed() {
5093 +        for (boolean createIncomplete : new boolean[] { true, false })
5094 +        for (Integer v1 : new Integer[] { 1, null })
5095 +    {
5096 +        final CFException ex = new CFException();
5097 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
5098 +        final FailingExceptionalCompletableFutureFunction r
5099 +            = new FailingExceptionalCompletableFutureFunction(ExecutionMode.EXECUTOR);
5100 +        final DelegatedCompletionStage<Integer> d =
5101 +            new DelegatedCompletionStage<Integer>(f);
5102 +        if (!createIncomplete) f.completeExceptionally(ex);
5103 +        final CompletionStage<Integer> g = d.exceptionallyComposeAsync(r, new ThreadExecutor());
5104 +        if (createIncomplete) f.completeExceptionally(ex);
5105 +
5106 +        checkCompletedExceptionally(f, ex);
5107 +        checkCompletedWithWrappedException(g.toCompletableFuture(), r.ex);
5108 +        r.assertInvoked();
5109 +    }}
5110 +
5111   }

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