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Comparing jsr166/src/test/tck/CompletableFutureTest.java (file contents):
Revision 1.197 by jsr166, Sun Jul 22 22:08:49 2018 UTC vs.
Revision 1.215 by jsr166, Wed Nov 21 23:19:03 2018 UTC

# 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 3062 | Line 3116 | public class CompletableFutureTest exten
3116          case 0:
3117              assertTrue(f.complete(v1));
3118              assertTrue(g.completeExceptionally(ex));
3119 <            h = m.thenCompose(f, (x -> g));
3119 >            h = m.thenCompose(f, x -> g);
3120              break;
3121          case 1:
3122              assertTrue(f.complete(v1));
3123 <            h = m.thenCompose(f, (x -> g));
3123 >            h = m.thenCompose(f, x -> g);
3124              assertTrue(g.completeExceptionally(ex));
3125              break;
3126          case 2:
3127              assertTrue(g.completeExceptionally(ex));
3128              assertTrue(f.complete(v1));
3129 <            h = m.thenCompose(f, (x -> g));
3129 >            h = m.thenCompose(f, x -> g);
3130              break;
3131          case 3:
3132              assertTrue(g.completeExceptionally(ex));
3133 <            h = m.thenCompose(f, (x -> g));
3133 >            h = m.thenCompose(f, x -> g);
3134              assertTrue(f.complete(v1));
3135              break;
3136          case 4:
3137 <            h = m.thenCompose(f, (x -> g));
3137 >            h = m.thenCompose(f, x -> g);
3138              assertTrue(f.complete(v1));
3139              assertTrue(g.completeExceptionally(ex));
3140              break;
3141          case 5:
3142 <            h = m.thenCompose(f, (x -> g));
3142 >            h = m.thenCompose(f, x -> g);
3143              assertTrue(f.complete(v1));
3144              assertTrue(g.completeExceptionally(ex));
3145              break;
# 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 +    {
3203 +        final CFException ex = new CFException();
3204 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
3205 +        final FailingExceptionalCompletableFutureFunction r
3206 +            = new FailingExceptionalCompletableFutureFunction(m);
3207 +        if (!createIncomplete) f.completeExceptionally(ex);
3208 +        final CompletableFuture<Integer> g = m.exceptionallyCompose(f, r);
3209 +        if (createIncomplete) f.completeExceptionally(ex);
3210 +
3211 +        checkCompletedExceptionally(f, ex);
3212 +        checkCompletedWithWrappedException(g, r.ex);
3213 +        r.assertInvoked();
3214 +    }}
3215 +
3216 +    /**
3217 +     * exceptionallyCompose result completes exceptionally if the
3218 +     * result of the action does
3219 +     */
3220 +    public void testExceptionallyCompose_actionReturnsFailingFuture() {
3221 +        for (ExecutionMode m : ExecutionMode.values())
3222 +        for (int order = 0; order < 6; order++)
3223 +    {
3224 +        final CFException ex0 = new CFException();
3225 +        final CFException ex = new CFException();
3226 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
3227 +        final CompletableFuture<Integer> g = new CompletableFuture<>();
3228 +        final CompletableFuture<Integer> h;
3229 +        // Test all permutations of orders
3230 +        switch (order) {
3231 +        case 0:
3232 +            assertTrue(f.completeExceptionally(ex0));
3233 +            assertTrue(g.completeExceptionally(ex));
3234 +            h = m.exceptionallyCompose(f, x -> g);
3235 +            break;
3236 +        case 1:
3237 +            assertTrue(f.completeExceptionally(ex0));
3238 +            h = m.exceptionallyCompose(f, x -> g);
3239 +            assertTrue(g.completeExceptionally(ex));
3240 +            break;
3241 +        case 2:
3242 +            assertTrue(g.completeExceptionally(ex));
3243 +            assertTrue(f.completeExceptionally(ex0));
3244 +            h = m.exceptionallyCompose(f, x -> g);
3245 +            break;
3246 +        case 3:
3247 +            assertTrue(g.completeExceptionally(ex));
3248 +            h = m.exceptionallyCompose(f, x -> g);
3249 +            assertTrue(f.completeExceptionally(ex0));
3250 +            break;
3251 +        case 4:
3252 +            h = m.exceptionallyCompose(f, x -> g);
3253 +            assertTrue(f.completeExceptionally(ex0));
3254 +            assertTrue(g.completeExceptionally(ex));
3255 +            break;
3256 +        case 5:
3257 +            h = m.exceptionallyCompose(f, x -> g);
3258 +            assertTrue(f.completeExceptionally(ex0));
3259 +            assertTrue(g.completeExceptionally(ex));
3260 +            break;
3261 +        default: throw new AssertionError();
3262 +        }
3263 +
3264 +        checkCompletedExceptionally(g, ex);
3265 +        checkCompletedWithWrappedException(h, ex);
3266 +        checkCompletedExceptionally(f, ex0);
3267 +    }}
3268 +
3269      // other static methods
3270  
3271      /**
# Line 4508 | Line 4677 | public class CompletableFutureTest exten
4677   //         return stage.toCompletableFuture().copy().isDone();
4678   //     }
4679  
4680 +    // For testing default implementations
4681 +    // Only non-default interface methods defined.
4682 +    static final class DelegatedCompletionStage<T> implements CompletionStage<T> {
4683 +        final CompletableFuture<T> cf;
4684 +        DelegatedCompletionStage(CompletableFuture<T> cf) { this.cf = cf; }
4685 +        public CompletableFuture<T> toCompletableFuture() {
4686 +            return cf; }
4687 +        public CompletionStage<Void> thenRun
4688 +            (Runnable action) {
4689 +            return cf.thenRun(action); }
4690 +        public CompletionStage<Void> thenRunAsync
4691 +            (Runnable action) {
4692 +            return cf.thenRunAsync(action); }
4693 +        public CompletionStage<Void> thenRunAsync
4694 +            (Runnable action,
4695 +             Executor executor) {
4696 +            return cf.thenRunAsync(action, executor); }
4697 +        public CompletionStage<Void> thenAccept
4698 +            (Consumer<? super T> action) {
4699 +            return cf.thenAccept(action); }
4700 +        public CompletionStage<Void> thenAcceptAsync
4701 +            (Consumer<? super T> action) {
4702 +            return cf.thenAcceptAsync(action); }
4703 +        public CompletionStage<Void> thenAcceptAsync
4704 +            (Consumer<? super T> action,
4705 +             Executor executor) {
4706 +            return cf.thenAcceptAsync(action, executor); }
4707 +        public <U> CompletionStage<U> thenApply
4708 +            (Function<? super T,? extends U> a) {
4709 +            return cf.thenApply(a); }
4710 +        public <U> CompletionStage<U> thenApplyAsync
4711 +            (Function<? super T,? extends U> fn) {
4712 +            return cf.thenApplyAsync(fn); }
4713 +        public <U> CompletionStage<U> thenApplyAsync
4714 +            (Function<? super T,? extends U> fn,
4715 +             Executor executor) {
4716 +            return cf.thenApplyAsync(fn, executor); }
4717 +        public <U,V> CompletionStage<V> thenCombine
4718 +            (CompletionStage<? extends U> other,
4719 +             BiFunction<? super T,? super U,? extends V> fn) {
4720 +            return cf.thenCombine(other, fn); }
4721 +        public <U,V> CompletionStage<V> thenCombineAsync
4722 +            (CompletionStage<? extends U> other,
4723 +             BiFunction<? super T,? super U,? extends V> fn) {
4724 +            return cf.thenCombineAsync(other, fn); }
4725 +        public <U,V> CompletionStage<V> thenCombineAsync
4726 +            (CompletionStage<? extends U> other,
4727 +             BiFunction<? super T,? super U,? extends V> fn,
4728 +             Executor executor) {
4729 +            return cf.thenCombineAsync(other, fn, executor); }
4730 +        public <U> CompletionStage<Void> thenAcceptBoth
4731 +            (CompletionStage<? extends U> other,
4732 +             BiConsumer<? super T, ? super U> action) {
4733 +            return cf.thenAcceptBoth(other, action); }
4734 +        public <U> CompletionStage<Void> thenAcceptBothAsync
4735 +            (CompletionStage<? extends U> other,
4736 +             BiConsumer<? super T, ? super U> action) {
4737 +            return cf.thenAcceptBothAsync(other, action); }
4738 +        public <U> CompletionStage<Void> thenAcceptBothAsync
4739 +            (CompletionStage<? extends U> other,
4740 +             BiConsumer<? super T, ? super U> action,
4741 +             Executor executor) {
4742 +            return cf.thenAcceptBothAsync(other, action, executor); }
4743 +        public CompletionStage<Void> runAfterBoth
4744 +            (CompletionStage<?> other,
4745 +             Runnable action) {
4746 +            return cf.runAfterBoth(other, action); }
4747 +        public CompletionStage<Void> runAfterBothAsync
4748 +            (CompletionStage<?> other,
4749 +             Runnable action) {
4750 +            return cf.runAfterBothAsync(other, action); }
4751 +        public CompletionStage<Void> runAfterBothAsync
4752 +            (CompletionStage<?> other,
4753 +             Runnable action,
4754 +             Executor executor) {
4755 +            return cf.runAfterBothAsync(other, action, executor); }
4756 +        public <U> CompletionStage<U> applyToEither
4757 +            (CompletionStage<? extends T> other,
4758 +             Function<? super T, U> fn) {
4759 +            return cf.applyToEither(other, fn); }
4760 +        public <U> CompletionStage<U> applyToEitherAsync
4761 +            (CompletionStage<? extends T> other,
4762 +             Function<? super T, U> fn) {
4763 +            return cf.applyToEitherAsync(other, fn); }
4764 +        public <U> CompletionStage<U> applyToEitherAsync
4765 +            (CompletionStage<? extends T> other,
4766 +             Function<? super T, U> fn,
4767 +             Executor executor) {
4768 +            return cf.applyToEitherAsync(other, fn, executor); }
4769 +        public CompletionStage<Void> acceptEither
4770 +            (CompletionStage<? extends T> other,
4771 +             Consumer<? super T> action) {
4772 +            return cf.acceptEither(other, action); }
4773 +        public CompletionStage<Void> acceptEitherAsync
4774 +            (CompletionStage<? extends T> other,
4775 +             Consumer<? super T> action) {
4776 +            return cf.acceptEitherAsync(other, action); }
4777 +        public CompletionStage<Void> acceptEitherAsync
4778 +            (CompletionStage<? extends T> other,
4779 +             Consumer<? super T> action,
4780 +             Executor executor) {
4781 +            return cf.acceptEitherAsync(other, action, executor); }
4782 +        public CompletionStage<Void> runAfterEither
4783 +            (CompletionStage<?> other,
4784 +             Runnable action) {
4785 +            return cf.runAfterEither(other, action); }
4786 +        public CompletionStage<Void> runAfterEitherAsync
4787 +            (CompletionStage<?> other,
4788 +             Runnable action) {
4789 +            return cf.runAfterEitherAsync(other, action); }
4790 +        public CompletionStage<Void> runAfterEitherAsync
4791 +            (CompletionStage<?> other,
4792 +             Runnable action,
4793 +             Executor executor) {
4794 +            return cf.runAfterEitherAsync(other, action, executor); }
4795 +        public <U> CompletionStage<U> thenCompose
4796 +            (Function<? super T, ? extends CompletionStage<U>> fn) {
4797 +            return cf.thenCompose(fn); }
4798 +        public <U> CompletionStage<U> thenComposeAsync
4799 +            (Function<? super T, ? extends CompletionStage<U>> fn) {
4800 +            return cf.thenComposeAsync(fn); }
4801 +        public <U> CompletionStage<U> thenComposeAsync
4802 +            (Function<? super T, ? extends CompletionStage<U>> fn,
4803 +             Executor executor) {
4804 +            return cf.thenComposeAsync(fn, executor); }
4805 +        public <U> CompletionStage<U> handle
4806 +            (BiFunction<? super T, Throwable, ? extends U> fn) {
4807 +            return cf.handle(fn); }
4808 +        public <U> CompletionStage<U> handleAsync
4809 +            (BiFunction<? super T, Throwable, ? extends U> fn) {
4810 +            return cf.handleAsync(fn); }
4811 +        public <U> CompletionStage<U> handleAsync
4812 +            (BiFunction<? super T, Throwable, ? extends U> fn,
4813 +             Executor executor) {
4814 +            return cf.handleAsync(fn, executor); }
4815 +        public CompletionStage<T> whenComplete
4816 +            (BiConsumer<? super T, ? super Throwable> action) {
4817 +            return cf.whenComplete(action); }
4818 +        public CompletionStage<T> whenCompleteAsync
4819 +            (BiConsumer<? super T, ? super Throwable> action) {
4820 +            return cf.whenCompleteAsync(action); }
4821 +        public CompletionStage<T> whenCompleteAsync
4822 +            (BiConsumer<? super T, ? super Throwable> action,
4823 +             Executor executor) {
4824 +            return cf.whenCompleteAsync(action, executor); }
4825 +        public CompletionStage<T> exceptionally
4826 +            (Function<Throwable, ? extends T> fn) {
4827 +            return cf.exceptionally(fn); }
4828 +    }
4829 +
4830 +    /**
4831 +     * default-implemented exceptionallyAsync action is not invoked when
4832 +     * source completes normally, and source result is propagated
4833 +     */
4834 +    public void testDefaultExceptionallyAsync_normalCompletion() {
4835 +        for (boolean createIncomplete : new boolean[] { true, false })
4836 +        for (Integer v1 : new Integer[] { 1, null })
4837 +    {
4838 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
4839 +        final DelegatedCompletionStage<Integer> d =
4840 +            new DelegatedCompletionStage<Integer>(f);
4841 +        if (!createIncomplete) assertTrue(f.complete(v1));
4842 +        final CompletionStage<Integer> g = d.exceptionallyAsync
4843 +            ((Throwable t) -> {
4844 +                threadFail("should not be called");
4845 +                return null;            // unreached
4846 +            });
4847 +        if (createIncomplete) assertTrue(f.complete(v1));
4848 +
4849 +        checkCompletedNormally(g.toCompletableFuture(), v1);
4850 +    }}
4851 +
4852 +    /**
4853 +     * default-implemented exceptionallyAsync action completes with
4854 +     * function value on source exception
4855 +     */
4856 +    public void testDefaultExceptionallyAsync_exceptionalCompletion() {
4857 +        for (boolean createIncomplete : new boolean[] { true, false })
4858 +        for (Integer v1 : new Integer[] { 1, null })
4859 +    {
4860 +        final AtomicInteger a = new AtomicInteger(0);
4861 +        final CFException ex = new CFException();
4862 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
4863 +        final DelegatedCompletionStage<Integer> d =
4864 +            new DelegatedCompletionStage<Integer>(f);
4865 +        if (!createIncomplete) f.completeExceptionally(ex);
4866 +        final CompletionStage<Integer> g = d.exceptionallyAsync
4867 +            ((Throwable t) -> {
4868 +                threadAssertSame(t, ex);
4869 +                a.getAndIncrement();
4870 +                return v1;
4871 +            });
4872 +        if (createIncomplete) f.completeExceptionally(ex);
4873 +
4874 +        checkCompletedNormally(g.toCompletableFuture(), v1);
4875 +        assertEquals(1, a.get());
4876 +    }}
4877 +
4878 +    /**
4879 +     * Under default implementation, if an "exceptionally action"
4880 +     * throws an exception, it completes exceptionally with that
4881 +     * exception
4882 +     */
4883 +    public void testDefaultExceptionallyAsync_exceptionalCompletionActionFailed() {
4884 +        for (boolean createIncomplete : new boolean[] { true, false })
4885 +    {
4886 +        final AtomicInteger a = new AtomicInteger(0);
4887 +        final CFException ex1 = new CFException();
4888 +        final CFException ex2 = new CFException();
4889 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
4890 +        final DelegatedCompletionStage<Integer> d =
4891 +            new DelegatedCompletionStage<Integer>(f);
4892 +        if (!createIncomplete) f.completeExceptionally(ex1);
4893 +        final CompletionStage<Integer> g = d.exceptionallyAsync
4894 +            ((Throwable t) -> {
4895 +                threadAssertSame(t, ex1);
4896 +                a.getAndIncrement();
4897 +                throw ex2;
4898 +            });
4899 +        if (createIncomplete) f.completeExceptionally(ex1);
4900 +
4901 +        checkCompletedWithWrappedException(g.toCompletableFuture(), ex2);
4902 +        checkCompletedExceptionally(f, ex1);
4903 +        checkCompletedExceptionally(d.toCompletableFuture(), ex1);
4904 +        assertEquals(1, a.get());
4905 +    }}
4906 +
4907 +    /**
4908 +     * default-implemented exceptionallyCompose result completes
4909 +     * normally after normal completion of source
4910 +     */
4911 +    public void testDefaultExceptionallyCompose_normalCompletion() {
4912 +        for (boolean createIncomplete : new boolean[] { true, false })
4913 +        for (Integer v1 : new Integer[] { 1, null })
4914 +    {
4915 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
4916 +        final ExceptionalCompletableFutureFunction r =
4917 +            new ExceptionalCompletableFutureFunction(ExecutionMode.SYNC);
4918 +        final DelegatedCompletionStage<Integer> d =
4919 +            new DelegatedCompletionStage<Integer>(f);
4920 +        if (!createIncomplete) assertTrue(f.complete(v1));
4921 +        final CompletionStage<Integer> g = d.exceptionallyCompose(r);
4922 +        if (createIncomplete) assertTrue(f.complete(v1));
4923 +
4924 +        checkCompletedNormally(f, v1);
4925 +        checkCompletedNormally(g.toCompletableFuture(), v1);
4926 +        r.assertNotInvoked();
4927 +    }}
4928 +
4929 +    /**
4930 +     * default-implemented exceptionallyCompose result completes
4931 +     * normally after exceptional completion of source
4932 +     */
4933 +    public void testDefaultExceptionallyCompose_exceptionalCompletion() {
4934 +        for (boolean createIncomplete : new boolean[] { true, false })
4935 +    {
4936 +        final CFException ex = new CFException();
4937 +        final ExceptionalCompletableFutureFunction r =
4938 +            new ExceptionalCompletableFutureFunction(ExecutionMode.SYNC);
4939 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
4940 +        final DelegatedCompletionStage<Integer> d =
4941 +            new DelegatedCompletionStage<Integer>(f);
4942 +        if (!createIncomplete) f.completeExceptionally(ex);
4943 +        final CompletionStage<Integer> g = d.exceptionallyCompose(r);
4944 +        if (createIncomplete) f.completeExceptionally(ex);
4945 +
4946 +        checkCompletedExceptionally(f, ex);
4947 +        checkCompletedNormally(g.toCompletableFuture(), r.value);
4948 +        r.assertInvoked();
4949 +    }}
4950 +
4951 +    /**
4952 +     * default-implemented exceptionallyCompose completes
4953 +     * exceptionally on exception if action does
4954 +     */
4955 +    public void testDefaultExceptionallyCompose_actionFailed() {
4956 +        for (boolean createIncomplete : new boolean[] { true, false })
4957 +    {
4958 +        final CFException ex = new CFException();
4959 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
4960 +        final FailingExceptionalCompletableFutureFunction r
4961 +            = new FailingExceptionalCompletableFutureFunction(ExecutionMode.SYNC);
4962 +        final DelegatedCompletionStage<Integer> d =
4963 +            new DelegatedCompletionStage<Integer>(f);
4964 +        if (!createIncomplete) f.completeExceptionally(ex);
4965 +        final CompletionStage<Integer> g = d.exceptionallyCompose(r);
4966 +        if (createIncomplete) f.completeExceptionally(ex);
4967 +
4968 +        checkCompletedExceptionally(f, ex);
4969 +        checkCompletedWithWrappedException(g.toCompletableFuture(), r.ex);
4970 +        r.assertInvoked();
4971 +    }}
4972 +
4973 +    /**
4974 +     * default-implemented exceptionallyComposeAsync result completes
4975 +     * normally after normal completion of source
4976 +     */
4977 +    public void testDefaultExceptionallyComposeAsync_normalCompletion() {
4978 +        for (boolean createIncomplete : new boolean[] { true, false })
4979 +        for (Integer v1 : new Integer[] { 1, null })
4980 +    {
4981 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
4982 +        final ExceptionalCompletableFutureFunction r =
4983 +            new ExceptionalCompletableFutureFunction(ExecutionMode.ASYNC);
4984 +        final DelegatedCompletionStage<Integer> d =
4985 +            new DelegatedCompletionStage<Integer>(f);
4986 +        if (!createIncomplete) assertTrue(f.complete(v1));
4987 +        final CompletionStage<Integer> g = d.exceptionallyComposeAsync(r);
4988 +        if (createIncomplete) assertTrue(f.complete(v1));
4989 +
4990 +        checkCompletedNormally(f, v1);
4991 +        checkCompletedNormally(g.toCompletableFuture(), v1);
4992 +        r.assertNotInvoked();
4993 +    }}
4994 +
4995 +    /**
4996 +     * default-implemented exceptionallyComposeAsync result completes
4997 +     * normally after exceptional completion of source
4998 +     */
4999 +    public void testDefaultExceptionallyComposeAsync_exceptionalCompletion() {
5000 +        for (boolean createIncomplete : new boolean[] { true, false })
5001 +    {
5002 +        final CFException ex = new CFException();
5003 +        final ExceptionalCompletableFutureFunction r =
5004 +            new ExceptionalCompletableFutureFunction(ExecutionMode.ASYNC);
5005 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
5006 +        final DelegatedCompletionStage<Integer> d =
5007 +            new DelegatedCompletionStage<Integer>(f);
5008 +        if (!createIncomplete) f.completeExceptionally(ex);
5009 +        final CompletionStage<Integer> g = d.exceptionallyComposeAsync(r);
5010 +        if (createIncomplete) f.completeExceptionally(ex);
5011 +
5012 +        checkCompletedExceptionally(f, ex);
5013 +        checkCompletedNormally(g.toCompletableFuture(), r.value);
5014 +        r.assertInvoked();
5015 +    }}
5016 +
5017 +    /**
5018 +     * default-implemented exceptionallyComposeAsync completes
5019 +     * exceptionally on exception if action does
5020 +     */
5021 +    public void testDefaultExceptionallyComposeAsync_actionFailed() {
5022 +        for (boolean createIncomplete : new boolean[] { true, false })
5023 +    {
5024 +        final CFException ex = new CFException();
5025 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
5026 +        final FailingExceptionalCompletableFutureFunction r
5027 +            = new FailingExceptionalCompletableFutureFunction(ExecutionMode.ASYNC);
5028 +        final DelegatedCompletionStage<Integer> d =
5029 +            new DelegatedCompletionStage<Integer>(f);
5030 +        if (!createIncomplete) f.completeExceptionally(ex);
5031 +        final CompletionStage<Integer> g = d.exceptionallyComposeAsync(r);
5032 +        if (createIncomplete) f.completeExceptionally(ex);
5033 +
5034 +        checkCompletedExceptionally(f, ex);
5035 +        checkCompletedWithWrappedException(g.toCompletableFuture(), r.ex);
5036 +        r.assertInvoked();
5037 +    }}
5038 +
5039 +    /**
5040 +     * default-implemented exceptionallyComposeAsync result completes
5041 +     * normally after normal completion of source
5042 +     */
5043 +    public void testDefaultExceptionallyComposeAsyncExecutor_normalCompletion() {
5044 +        for (boolean createIncomplete : new boolean[] { true, false })
5045 +        for (Integer v1 : new Integer[] { 1, null })
5046 +    {
5047 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
5048 +        final ExceptionalCompletableFutureFunction r =
5049 +            new ExceptionalCompletableFutureFunction(ExecutionMode.EXECUTOR);
5050 +        final DelegatedCompletionStage<Integer> d =
5051 +            new DelegatedCompletionStage<Integer>(f);
5052 +        if (!createIncomplete) assertTrue(f.complete(v1));
5053 +        final CompletionStage<Integer> g = d.exceptionallyComposeAsync(r, new ThreadExecutor());
5054 +        if (createIncomplete) assertTrue(f.complete(v1));
5055 +
5056 +        checkCompletedNormally(f, v1);
5057 +        checkCompletedNormally(g.toCompletableFuture(), v1);
5058 +        r.assertNotInvoked();
5059 +    }}
5060 +
5061 +    /**
5062 +     * default-implemented exceptionallyComposeAsync result completes
5063 +     * normally after exceptional completion of source
5064 +     */
5065 +    public void testDefaultExceptionallyComposeAsyncExecutor_exceptionalCompletion() {
5066 +        for (boolean createIncomplete : new boolean[] { true, false })
5067 +    {
5068 +        final CFException ex = new CFException();
5069 +        final ExceptionalCompletableFutureFunction r =
5070 +            new ExceptionalCompletableFutureFunction(ExecutionMode.EXECUTOR);
5071 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
5072 +        final DelegatedCompletionStage<Integer> d =
5073 +            new DelegatedCompletionStage<Integer>(f);
5074 +        if (!createIncomplete) f.completeExceptionally(ex);
5075 +        final CompletionStage<Integer> g = d.exceptionallyComposeAsync(r, new ThreadExecutor());
5076 +        if (createIncomplete) f.completeExceptionally(ex);
5077 +
5078 +        checkCompletedExceptionally(f, ex);
5079 +        checkCompletedNormally(g.toCompletableFuture(), r.value);
5080 +        r.assertInvoked();
5081 +    }}
5082 +
5083 +    /**
5084 +     * default-implemented exceptionallyComposeAsync completes
5085 +     * exceptionally on exception if action does
5086 +     */
5087 +    public void testDefaultExceptionallyComposeAsyncExecutor_actionFailed() {
5088 +        for (boolean createIncomplete : new boolean[] { true, false })
5089 +    {
5090 +        final CFException ex = new CFException();
5091 +        final CompletableFuture<Integer> f = new CompletableFuture<>();
5092 +        final FailingExceptionalCompletableFutureFunction r
5093 +            = new FailingExceptionalCompletableFutureFunction(ExecutionMode.EXECUTOR);
5094 +        final DelegatedCompletionStage<Integer> d =
5095 +            new DelegatedCompletionStage<Integer>(f);
5096 +        if (!createIncomplete) f.completeExceptionally(ex);
5097 +        final CompletionStage<Integer> g = d.exceptionallyComposeAsync(r, new ThreadExecutor());
5098 +        if (createIncomplete) f.completeExceptionally(ex);
5099 +
5100 +        checkCompletedExceptionally(f, ex);
5101 +        checkCompletedWithWrappedException(g.toCompletableFuture(), r.ex);
5102 +        r.assertInvoked();
5103 +    }}
5104 +
5105   }

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