[ViewVC] Diff of: jsr166/jsr166/src/test/tck/CompletableFutureTest.java

Comparing jsr166/src/test/tck/CompletableFutureTest.java (file contents):
Revision 1.2 by jsr166, Wed Feb 6 20:29:55 2013 UTC vs.
Revision 1.195 by jsr166, Sun Jul 22 20:09:31 2018 UTC

+/*
-<
+ * Written by Doug Lea with assistance from members of JCP JSR-166
-<
+ * Expert Group and released to the public domain, as explained at
->
+ * Written by Doug Lea and Martin Buchholz with assistance from
->
+ * members of JCP JSR-166 Expert Group and released to the public
->
+ * domain, as explained at
+ * http://creativecommons.org/publicdomain/zero/1.0/
-–
+ * Other contributors include Andrew Wright, Jeffrey Hayes,
-–
+ * Pat Fisher, Mike Judd.
+ */
-<
+import junit.framework.*;
->
+import static java.util.concurrent.TimeUnit.MILLISECONDS;
->
+import static java.util.concurrent.TimeUnit.SECONDS;
->
+import static java.util.concurrent.CompletableFuture.completedFuture;
->
+import static java.util.concurrent.CompletableFuture.failedFuture;
->
->
+import java.lang.reflect.Method;
->
+import java.lang.reflect.Modifier;
->
->
+import java.util.stream.Collectors;
->
+import java.util.stream.Stream;
->
->
+import java.util.ArrayList;
->
+import java.util.Arrays;
->
+import java.util.List;
->
+import java.util.Objects;
->
+import java.util.Set;
+import java.util.concurrent.Callable;
+import java.util.concurrent.CancellationException;
-–
+import java.util.concurrent.CountDownLatch;
-–
+import java.util.concurrent.ExecutionException;
-–
+import java.util.concurrent.Future;
+import java.util.concurrent.CompletableFuture;
-+
+import java.util.concurrent.CompletionException;
-+
+import java.util.concurrent.CompletionStage;
-+
+import java.util.concurrent.ExecutionException;
-+
+import java.util.concurrent.Executor;
-+
+import java.util.concurrent.ForkJoinPool;
-+
+import java.util.concurrent.ForkJoinTask;
-+
+import java.util.concurrent.RejectedExecutionException;
+import java.util.concurrent.TimeoutException;
+import java.util.concurrent.atomic.AtomicInteger;
-<
+import static java.util.concurrent.TimeUnit.MILLISECONDS;
-<
+import static java.util.concurrent.TimeUnit.SECONDS;
-<
+import java.util.*;
->
+import java.util.concurrent.atomic.AtomicReference;
->
+import java.util.function.BiConsumer;
->
+import java.util.function.BiFunction;
->
+import java.util.function.Consumer;
->
+import java.util.function.Function;
->
+import java.util.function.Predicate;
->
+import java.util.function.Supplier;
->
->
+import junit.framework.Test;
->
+import junit.framework.TestSuite;
+public class CompletableFutureTest extends JSR166TestCase {
+    public static void main(String[] args) {
-<
+        junit.textui.TestRunner.run(suite());
->
+        main(suite(), args);
+    public static Test suite() {
+        return new TestSuite(CompletableFutureTest.class);
-<
+    public void testToString() {
-<
+        CompletableFuture<String> f;
->
+    static class CFException extends RuntimeException {}
->
->
+    void checkIncomplete(CompletableFuture<?> f) {
->
+        assertFalse(f.isDone());
->
+        assertFalse(f.isCancelled());
->
+        assertTrue(f.toString().matches(".*\\[.*Not completed.*\\]"));
->
->
+        Object result = null;
->
+        try {
->
+            result = f.getNow(null);
->
+        } catch (Throwable fail) { threadUnexpectedException(fail); }
->
+        assertNull(result);
->
->
+        try {
->
+            f.get(randomExpiredTimeout(), randomTimeUnit());
->
+            shouldThrow();
->
+        }
->
+        catch (TimeoutException success) {}
->
+        catch (Throwable fail) { threadUnexpectedException(fail); }
->
+    }
->
->
+    <T> void checkCompletedNormally(CompletableFuture<T> f, T value) {
->
+        checkTimedGet(f, value);
->
->
+        try {
->
+            assertEquals(value, f.join());
->
+            assertEquals(value, f.getNow(null));
->
+            assertEquals(value, f.get());
->
+        } catch (Throwable fail) { threadUnexpectedException(fail); }
->
+        assertTrue(f.isDone());
->
+        assertFalse(f.isCancelled());
->
+        assertFalse(f.isCompletedExceptionally());
->
+        assertTrue(f.toString().matches(".*\\[.*Completed normally.*\\]"));
->
+    }
->
->
+    /**
->
+     * Returns the "raw" internal exceptional completion of f,
->
+     * without any additional wrapping with CompletionException.
->
+     */
->
+    Throwable exceptionalCompletion(CompletableFuture<?> f) {
->
+        // handle (and whenComplete and exceptionally) can distinguish
->
+        // between "direct" and "wrapped" exceptional completion
->
+        return f.handle((u, t) -> t).join();
->
+    }
->
->
+    void checkCompletedExceptionally(CompletableFuture<?> f,
->
+                                     boolean wrapped,
->
+                                     Consumer<Throwable> checker) {
->
+        Throwable cause = exceptionalCompletion(f);
->
+        if (wrapped) {
->
+            assertTrue(cause instanceof CompletionException);
->
+            cause = cause.getCause();
->
+        }
->
+        checker.accept(cause);
->
->
+        long startTime = System.nanoTime();
->
+        try {
->
+            f.get(LONG_DELAY_MS, MILLISECONDS);
->
+            shouldThrow();
->
+        } catch (ExecutionException success) {
->
+            assertSame(cause, success.getCause());
->
+        } catch (Throwable fail) { threadUnexpectedException(fail); }
->
+        assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS / 2);
->
->
+        try {
->
+            f.join();
->
+            shouldThrow();
->
+        } catch (CompletionException success) {
->
+            assertSame(cause, success.getCause());
->
+        } catch (Throwable fail) { threadUnexpectedException(fail); }
->
->
+        try {
->
+            f.getNow(null);
->
+            shouldThrow();
->
+        } catch (CompletionException success) {
->
+            assertSame(cause, success.getCause());
->
+        } catch (Throwable fail) { threadUnexpectedException(fail); }
->
->
+        try {
->
+            f.get();
->
+            shouldThrow();
->
+        } catch (ExecutionException success) {
->
+            assertSame(cause, success.getCause());
->
+        } catch (Throwable fail) { threadUnexpectedException(fail); }
->
->
+        assertFalse(f.isCancelled());
->
+        assertTrue(f.isDone());
->
+        assertTrue(f.isCompletedExceptionally());
->
+        assertTrue(f.toString().matches(".*\\[.*Completed exceptionally.*\\]"));
->
+    }
->
->
+    void checkCompletedWithWrappedCFException(CompletableFuture<?> f) {
->
+        checkCompletedExceptionally(f, true,
->
+            t -> assertTrue(t instanceof CFException));
->
+    }
->
->
+    void checkCompletedWithWrappedCancellationException(CompletableFuture<?> f) {
->
+        checkCompletedExceptionally(f, true,
->
+            t -> assertTrue(t instanceof CancellationException));
->
+    }
->
->
+    void checkCompletedWithTimeoutException(CompletableFuture<?> f) {
->
+        checkCompletedExceptionally(f, false,
->
+            t -> assertTrue(t instanceof TimeoutException));
->
+    }
->
->
+    void checkCompletedWithWrappedException(CompletableFuture<?> f,
->
+                                            Throwable ex) {
->
+        checkCompletedExceptionally(f, true, t -> assertSame(t, ex));
->
+    }
->
->
+    void checkCompletedExceptionally(CompletableFuture<?> f, Throwable ex) {
->
+        checkCompletedExceptionally(f, false, t -> assertSame(t, ex));
->
+    }
->
->
+    void checkCancelled(CompletableFuture<?> f) {
->
+        long startTime = System.nanoTime();
->
+        try {
->
+            f.get(LONG_DELAY_MS, MILLISECONDS);
->
+            shouldThrow();
->
+        } catch (CancellationException success) {
->
+        } catch (Throwable fail) { threadUnexpectedException(fail); }
->
+        assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS / 2);
->
->
+        try {
->
+            f.join();
->
+            shouldThrow();
->
+        } catch (CancellationException success) {}
->
+        try {
->
+            f.getNow(null);
->
+            shouldThrow();
->
+        } catch (CancellationException success) {}
->
+        try {
->
+            f.get();
->
+            shouldThrow();
->
+        } catch (CancellationException success) {
->
+        } catch (Throwable fail) { threadUnexpectedException(fail); }
->
->
+        assertTrue(exceptionalCompletion(f) instanceof CancellationException);
->
->
+        assertTrue(f.isDone());
->
+        assertTrue(f.isCompletedExceptionally());
->
+        assertTrue(f.isCancelled());
->
+        assertTrue(f.toString().matches(".*\\[.*Completed exceptionally.*\\]"));
->
+    }
->
->
+    /**
->
+     * A newly constructed CompletableFuture is incomplete, as indicated
->
+     * by methods isDone, isCancelled, and getNow
->
+     */
->
+    public void testConstructor() {
->
+        CompletableFuture<Integer> f = new CompletableFuture<>();
->
+        checkIncomplete(f);
->
+    }
->
->
+    /**
->
+     * complete completes normally, as indicated by methods isDone,
->
+     * isCancelled, join, get, and getNow
->
+     */
->
+    public void testComplete() {
->
+        for (Integer v1 : new Integer[] { 1, null })
->
+    {
->
+        CompletableFuture<Integer> f = new CompletableFuture<>();
->
+        checkIncomplete(f);
->
+        assertTrue(f.complete(v1));
->
+        assertFalse(f.complete(v1));
->
+        checkCompletedNormally(f, v1);
->
+    }}
->
->
+    /**
->
+     * completeExceptionally completes exceptionally, as indicated by
->
+     * methods isDone, isCancelled, join, get, and getNow
->
+     */
->
+    public void testCompleteExceptionally() {
->
+        CompletableFuture<Integer> f = new CompletableFuture<>();
->
+        CFException ex = new CFException();
->
+        checkIncomplete(f);
->
+        f.completeExceptionally(ex);
->
+        checkCompletedExceptionally(f, ex);
->
+    }
->
->
+    /**
->
+     * cancel completes exceptionally and reports cancelled, as indicated by
->
+     * methods isDone, isCancelled, join, get, and getNow
->
+     */
->
+    public void testCancel() {
->
+        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
->
+    {
->
+        CompletableFuture<Integer> f = new CompletableFuture<>();
->
+        checkIncomplete(f);
->
+        assertTrue(f.cancel(mayInterruptIfRunning));
->
+        assertTrue(f.cancel(mayInterruptIfRunning));
->
+        assertTrue(f.cancel(!mayInterruptIfRunning));
->
+        checkCancelled(f);
->
+    }}
->
->
+    /**
->
+     * obtrudeValue forces completion with given value
->
+     */
->
+    public void testObtrudeValue() {
->
+        CompletableFuture<Integer> f = new CompletableFuture<>();
->
+        checkIncomplete(f);
->
+        assertTrue(f.complete(one));
->
+        checkCompletedNormally(f, one);
->
+        f.obtrudeValue(three);
->
+        checkCompletedNormally(f, three);
->
+        f.obtrudeValue(two);
->
+        checkCompletedNormally(f, two);
->
+        f = new CompletableFuture<>();
->
+        f.obtrudeValue(three);
->
+        checkCompletedNormally(f, three);
->
+        f.obtrudeValue(null);
->
+        checkCompletedNormally(f, null);
->
+        f = new CompletableFuture<>();
->
+        f.completeExceptionally(new CFException());
->
+        f.obtrudeValue(four);
->
+        checkCompletedNormally(f, four);
->
+    }
->
->
+    /**
->
+     * obtrudeException forces completion with given exception
->
+     */
->
+    public void testObtrudeException() {
->
+        for (Integer v1 : new Integer[] { 1, null })
->
+    {
->
+        CFException ex;
->
+        CompletableFuture<Integer> f;
->
->
+        f = new CompletableFuture<>();
->
+        assertTrue(f.complete(v1));
->
+        for (int i = 0; i < 2; i++) {
->
+            f.obtrudeException(ex = new CFException());
->
+            checkCompletedExceptionally(f, ex);
->
+        }
->
->
+        f = new CompletableFuture<>();
->
+        for (int i = 0; i < 2; i++) {
->
+            f.obtrudeException(ex = new CFException());
->
+            checkCompletedExceptionally(f, ex);
->
+        }
->
->
+        f = new CompletableFuture<>();
->
+        f.completeExceptionally(new CFException());
->
+        f.obtrudeValue(v1);
->
+        checkCompletedNormally(f, v1);
->
+        f.obtrudeException(ex = new CFException());
->
+        checkCompletedExceptionally(f, ex);
->
+        f.completeExceptionally(new CFException());
->
+        checkCompletedExceptionally(f, ex);
->
+        assertFalse(f.complete(v1));
->
+        checkCompletedExceptionally(f, ex);
->
+    }}
->
->
+    /**
->
+     * getNumberOfDependents returns number of dependent tasks
->
+     */
->
+    public void testGetNumberOfDependents() {
->
+        for (ExecutionMode m : ExecutionMode.values())
->
+        for (Integer v1 : new Integer[] { 1, null })
->
+    {
->
+        CompletableFuture<Integer> f = new CompletableFuture<>();
->
+        assertEquals(0, f.getNumberOfDependents());
->
+        final CompletableFuture<Void> g = m.thenRun(f, new Noop(m));
->
+        assertEquals(1, f.getNumberOfDependents());
->
+        assertEquals(0, g.getNumberOfDependents());
->
+        final CompletableFuture<Void> h = m.thenRun(f, new Noop(m));
->
+        assertEquals(2, f.getNumberOfDependents());
->
+        assertEquals(0, h.getNumberOfDependents());
->
+        assertTrue(f.complete(v1));
->
+        checkCompletedNormally(g, null);
->
+        checkCompletedNormally(h, null);
->
+        assertEquals(0, f.getNumberOfDependents());
->
+        assertEquals(0, g.getNumberOfDependents());
->
+        assertEquals(0, h.getNumberOfDependents());
->
+    }}
->
->
+    /**
->
+     * toString indicates current completion state
->
+     */
->
+    public void testToString_incomplete() {
->
+        CompletableFuture<String> f = new CompletableFuture<>();
->
+        assertTrue(f.toString().matches(".*\\[.*Not completed.*\\]"));
->
+        if (testImplementationDetails)
->
+            assertEquals(identityString(f) + "[Not completed]",
->
+                         f.toString());
->
+    }
->
->
+    public void testToString_normal() {
->
+        CompletableFuture<String> f = new CompletableFuture<>();
->
+        assertTrue(f.complete("foo"));
->
+        assertTrue(f.toString().matches(".*\\[.*Completed normally.*\\]"));
->
+        if (testImplementationDetails)
->
+            assertEquals(identityString(f) + "[Completed normally]",
->
+                         f.toString());
->
+    }
->
->
+    public void testToString_exception() {
->
+        CompletableFuture<String> f = new CompletableFuture<>();
->
+        assertTrue(f.completeExceptionally(new IndexOutOfBoundsException()));
->
+        assertTrue(f.toString().matches(".*\\[.*Completed exceptionally.*\\]"));
->
+        if (testImplementationDetails)
->
+            assertTrue(f.toString().startsWith(
->
+                               identityString(f) + "[Completed exceptionally: "));
->
+    }
->
->
+    public void testToString_cancelled() {
->
+        for (boolean mayInterruptIfRunning : new boolean[] { true, false }) {
->
+            CompletableFuture<String> f = new CompletableFuture<>();
->
+            assertTrue(f.cancel(mayInterruptIfRunning));
->
+            assertTrue(f.toString().matches(".*\\[.*Completed exceptionally.*\\]"));
->
+            if (testImplementationDetails)
->
+                assertTrue(f.toString().startsWith(
->
+                                   identityString(f) + "[Completed exceptionally: "));
->
+        }
->
+    }
->
->
+    /**
->
+     * completedFuture returns a completed CompletableFuture with given value
->
+     */
->
+    public void testCompletedFuture() {
->
+        CompletableFuture<String> f = CompletableFuture.completedFuture("test");
->
+        checkCompletedNormally(f, "test");
->
+    }
->
->
+    abstract static class CheckedAction {
->
+        int invocationCount = 0;
->
+        final ExecutionMode m;
->
+        CheckedAction(ExecutionMode m) { this.m = m; }
->
+        void invoked() {
->
+            m.checkExecutionMode();
->
+            assertEquals(0, invocationCount++);
->
+        }
->
+        void assertNotInvoked() { assertEquals(0, invocationCount); }
->
+        void assertInvoked() { assertEquals(1, invocationCount); }
->
+    }
->
->
+    abstract static class CheckedIntegerAction extends CheckedAction {
->
+        Integer value;
->
+        CheckedIntegerAction(ExecutionMode m) { super(m); }
->
+        void assertValue(Integer expected) {
->
+            assertInvoked();
->
+            assertEquals(expected, value);
->
+        }
->
+    }
->
->
+    static class IntegerSupplier extends CheckedAction
->
+        implements Supplier<Integer>
->
+    {
->
+        final Integer value;
->
+        IntegerSupplier(ExecutionMode m, Integer value) {
->
+            super(m);
->
+            this.value = value;
->
+        }
->
+        public Integer get() {
->
+            invoked();
->
+            return value;
->
+        }
->
+    }
->
->
+    // A function that handles and produces null values as well.
->
+    static Integer inc(Integer x) {
->
+        return (x == null) ? null : x + 1;
->
+    }
->
->
+    static class NoopConsumer extends CheckedIntegerAction
->
+        implements Consumer<Integer>
->
+    {
->
+        NoopConsumer(ExecutionMode m) { super(m); }
->
+        public void accept(Integer x) {
->
+            invoked();
->
+            value = x;
->
+        }
->
+    }
->
->
+    static class IncFunction extends CheckedIntegerAction
->
+        implements Function<Integer,Integer>
->
+    {
->
+        IncFunction(ExecutionMode m) { super(m); }
->
+        public Integer apply(Integer x) {
->
+            invoked();
->
+            return value = inc(x);
->
+        }
->
+    }
->
->
+    // Choose non-commutative actions for better coverage
->
+    // A non-commutative function that handles and produces null values as well.
->
+    static Integer subtract(Integer x, Integer y) {
->
+        return (x == null && y == null) ? null :
->
+            ((x == null) ? 42 : x.intValue())
->
+            - ((y == null) ? 99 : y.intValue());
->
+    }
->
->
+    static class SubtractAction extends CheckedIntegerAction
->
+        implements BiConsumer<Integer, Integer>
->
+    {
->
+        SubtractAction(ExecutionMode m) { super(m); }
->
+        public void accept(Integer x, Integer y) {
->
+            invoked();
->
+            value = subtract(x, y);
->
+        }
->
+    }
->
->
+    static class SubtractFunction extends CheckedIntegerAction
->
+        implements BiFunction<Integer, Integer, Integer>
->
+    {
->
+        SubtractFunction(ExecutionMode m) { super(m); }
->
+        public Integer apply(Integer x, Integer y) {
->
+            invoked();
->
+            return value = subtract(x, y);
->
+        }
->
+    }
->
->
+    static class Noop extends CheckedAction implements Runnable {
->
+        Noop(ExecutionMode m) { super(m); }
->
+        public void run() {
->
+            invoked();
->
+        }
->
+    }
->
->
+    static class FailingSupplier extends CheckedAction
->
+        implements Supplier<Integer>
->
+    {
->
+        final CFException ex;
->
+        FailingSupplier(ExecutionMode m) { super(m); ex = new CFException(); }
->
+        public Integer get() {
->
+            invoked();
->
+            throw ex;
->
+        }
->
+    }
->
->
+    static class FailingConsumer extends CheckedIntegerAction
->
+        implements Consumer<Integer>
->
+    {
->
+        final CFException ex;
->
+        FailingConsumer(ExecutionMode m) { super(m); ex = new CFException(); }
->
+        public void accept(Integer x) {
->
+            invoked();
->
+            value = x;
->
+            throw ex;
->
+        }
->
+    }
->
->
+    static class FailingBiConsumer extends CheckedIntegerAction
->
+        implements BiConsumer<Integer, Integer>
->
+    {
->
+        final CFException ex;
->
+        FailingBiConsumer(ExecutionMode m) { super(m); ex = new CFException(); }
->
+        public void accept(Integer x, Integer y) {
->
+            invoked();
->
+            value = subtract(x, y);
->
+            throw ex;
->
+        }
->
+    }
->
->
+    static class FailingFunction extends CheckedIntegerAction
->
+        implements Function<Integer, Integer>
->
+    {
->
+        final CFException ex;
->
+        FailingFunction(ExecutionMode m) { super(m); ex = new CFException(); }
->
+        public Integer apply(Integer x) {
->
+            invoked();
->
+            value = x;
->
+            throw ex;
->
+        }
->
+    }
->
->
+    static class FailingBiFunction extends CheckedIntegerAction
->
+        implements BiFunction<Integer, Integer, Integer>
->
+    {
->
+        final CFException ex;
->
+        FailingBiFunction(ExecutionMode m) { super(m); ex = new CFException(); }
->
+        public Integer apply(Integer x, Integer y) {
->
+            invoked();
->
+            value = subtract(x, y);
->
+            throw ex;
->
+        }
->
+    }
->
->
+    static class FailingRunnable extends CheckedAction implements Runnable {
->
+        final CFException ex;
->
+        FailingRunnable(ExecutionMode m) { super(m); ex = new CFException(); }
->
+        public void run() {
->
+            invoked();
->
+            throw ex;
->
+        }
->
+    }
->
->
+    static class CompletableFutureInc extends CheckedIntegerAction
->
+        implements Function<Integer, CompletableFuture<Integer>>
->
+    {
->
+        CompletableFutureInc(ExecutionMode m) { super(m); }
->
+        public CompletableFuture<Integer> apply(Integer x) {
->
+            invoked();
->
+            value = x;
->
+            CompletableFuture<Integer> f = new CompletableFuture<>();
->
+            assertTrue(f.complete(inc(x)));
->
+            return f;
->
+        }
->
+    }
->
->
+    static class FailingCompletableFutureFunction extends CheckedIntegerAction
->
+        implements Function<Integer, CompletableFuture<Integer>>
->
+    {
->
+        final CFException ex;
->
+        FailingCompletableFutureFunction(ExecutionMode m) { super(m); ex = new CFException(); }
->
+        public CompletableFuture<Integer> apply(Integer x) {
->
+            invoked();
->
+            value = x;
->
+            throw ex;
->
+        }
->
+    }
->
->
+    static class CountingRejectingExecutor implements Executor {
->
+        final RejectedExecutionException ex = new RejectedExecutionException();
->
+        final AtomicInteger count = new AtomicInteger(0);
->
+        public void execute(Runnable r) {
->
+            count.getAndIncrement();
->
+            throw ex;
->
+        }
->
+    }
->
->
+    // Used for explicit executor tests
->
+    static final class ThreadExecutor implements Executor {
->
+        final AtomicInteger count = new AtomicInteger(0);
->
+        static final ThreadGroup tg = new ThreadGroup("ThreadExecutor");
->
+        static boolean startedCurrentThread() {
->
+            return Thread.currentThread().getThreadGroup() == tg;
->
+        }
->
->
+        public void execute(Runnable r) {
->
+            count.getAndIncrement();
->
+            new Thread(tg, r).start();
->
+        }
->
+    }
->
->
+    static final boolean defaultExecutorIsCommonPool
->
+        = ForkJoinPool.getCommonPoolParallelism() > 1;
->
->
+    /**
->
+     * Permits the testing of parallel code for the 3 different
->
+     * execution modes without copy/pasting all the test methods.
->
+     */
->
+    enum ExecutionMode {
->
+        SYNC {
->
+            public void checkExecutionMode() {
->
+                assertFalse(ThreadExecutor.startedCurrentThread());
->
+                assertNull(ForkJoinTask.getPool());
->
+            }
->
+            public CompletableFuture<Void> runAsync(Runnable a) {
->
+                throw new UnsupportedOperationException();
->
+            }
->
+            public <U> CompletableFuture<U> supplyAsync(Supplier<U> a) {
->
+                throw new UnsupportedOperationException();
->
+            }
->
+            public <T> CompletableFuture<Void> thenRun
->
+                (CompletableFuture<T> f, Runnable a) {
->
+                return f.thenRun(a);
->
+            }
->
+            public <T> CompletableFuture<Void> thenAccept
->
+                (CompletableFuture<T> f, Consumer<? super T> a) {
->
+                return f.thenAccept(a);
->
+            }
->
+            public <T,U> CompletableFuture<U> thenApply
->
+                (CompletableFuture<T> f, Function<? super T,U> a) {
->
+                return f.thenApply(a);
->
+            }
->
+            public <T,U> CompletableFuture<U> thenCompose
->
+                (CompletableFuture<T> f,
->
+                 Function<? super T,? extends CompletionStage<U>> a) {
->
+                return f.thenCompose(a);
->
+            }
->
+            public <T,U> CompletableFuture<U> handle
->
+                (CompletableFuture<T> f,
->
+                 BiFunction<? super T,Throwable,? extends U> a) {
->
+                return f.handle(a);
->
+            }
->
+            public <T> CompletableFuture<T> whenComplete
->
+                (CompletableFuture<T> f,
->
+                 BiConsumer<? super T,? super Throwable> a) {
->
+                return f.whenComplete(a);
->
+            }
->
+            public <T,U> CompletableFuture<Void> runAfterBoth
->
+                (CompletableFuture<T> f, CompletableFuture<U> g, Runnable a) {
->
+                return f.runAfterBoth(g, a);
->
+            }
->
+            public <T,U> CompletableFuture<Void> thenAcceptBoth
->
+                (CompletableFuture<T> f,
->
+                 CompletionStage<? extends U> g,
->
+                 BiConsumer<? super T,? super U> a) {
->
+                return f.thenAcceptBoth(g, a);
->
+            }
->
+            public <T,U,V> CompletableFuture<V> thenCombine
->
+                (CompletableFuture<T> f,
->
+                 CompletionStage<? extends U> g,
->
+                 BiFunction<? super T,? super U,? extends V> a) {
->
+                return f.thenCombine(g, a);
->
+            }
->
+            public <T> CompletableFuture<Void> runAfterEither
->
+                (CompletableFuture<T> f,
->
+                 CompletionStage<?> g,
->
+                 java.lang.Runnable a) {
->
+                return f.runAfterEither(g, a);
->
+            }
->
+            public <T> CompletableFuture<Void> acceptEither
->
+                (CompletableFuture<T> f,
->
+                 CompletionStage<? extends T> g,
->
+                 Consumer<? super T> a) {
->
+                return f.acceptEither(g, a);
->
+            }
->
+            public <T,U> CompletableFuture<U> applyToEither
->
+                (CompletableFuture<T> f,
->
+                 CompletionStage<? extends T> g,
->
+                 Function<? super T,U> a) {
->
+                return f.applyToEither(g, a);
->
+            }
->
+        },
->
->
+        ASYNC {
->
+            public void checkExecutionMode() {
->
+                assertEquals(defaultExecutorIsCommonPool,
->
+                             (ForkJoinPool.commonPool() == ForkJoinTask.getPool()));
->
+            }
->
+            public CompletableFuture<Void> runAsync(Runnable a) {
->
+                return CompletableFuture.runAsync(a);
->
+            }
->
+            public <U> CompletableFuture<U> supplyAsync(Supplier<U> a) {
->
+                return CompletableFuture.supplyAsync(a);
->
+            }
->
+            public <T> CompletableFuture<Void> thenRun
->
+                (CompletableFuture<T> f, Runnable a) {
->
+                return f.thenRunAsync(a);
->
+            }
->
+            public <T> CompletableFuture<Void> thenAccept
->
+                (CompletableFuture<T> f, Consumer<? super T> a) {
->
+                return f.thenAcceptAsync(a);
->
+            }
->
+            public <T,U> CompletableFuture<U> thenApply
->
+                (CompletableFuture<T> f, Function<? super T,U> a) {
->
+                return f.thenApplyAsync(a);
->
+            }
->
+            public <T,U> CompletableFuture<U> thenCompose
->
+                (CompletableFuture<T> f,
->
+                 Function<? super T,? extends CompletionStage<U>> a) {
->
+                return f.thenComposeAsync(a);
->
+            }
->
+            public <T,U> CompletableFuture<U> handle
->
+                (CompletableFuture<T> f,
->
+                 BiFunction<? super T,Throwable,? extends U> a) {
->
+                return f.handleAsync(a);
->
+            }
->
+            public <T> CompletableFuture<T> whenComplete
->
+                (CompletableFuture<T> f,
->
+                 BiConsumer<? super T,? super Throwable> a) {
->
+                return f.whenCompleteAsync(a);
->
+            }
->
+            public <T,U> CompletableFuture<Void> runAfterBoth
->
+                (CompletableFuture<T> f, CompletableFuture<U> g, Runnable a) {
->
+                return f.runAfterBothAsync(g, a);
->
+            }
->
+            public <T,U> CompletableFuture<Void> thenAcceptBoth
->
+                (CompletableFuture<T> f,
->
+                 CompletionStage<? extends U> g,
->
+                 BiConsumer<? super T,? super U> a) {
->
+                return f.thenAcceptBothAsync(g, a);
->
+            }
->
+            public <T,U,V> CompletableFuture<V> thenCombine
->
+                (CompletableFuture<T> f,
->
+                 CompletionStage<? extends U> g,
->
+                 BiFunction<? super T,? super U,? extends V> a) {
->
+                return f.thenCombineAsync(g, a);
->
+            }
->
+            public <T> CompletableFuture<Void> runAfterEither
->
+                (CompletableFuture<T> f,
->
+                 CompletionStage<?> g,
->
+                 java.lang.Runnable a) {
->
+                return f.runAfterEitherAsync(g, a);
->
+            }
->
+            public <T> CompletableFuture<Void> acceptEither
->
+                (CompletableFuture<T> f,
->
+                 CompletionStage<? extends T> g,
->
+                 Consumer<? super T> a) {
->
+                return f.acceptEitherAsync(g, a);
->
+            }
->
+            public <T,U> CompletableFuture<U> applyToEither
->
+                (CompletableFuture<T> f,
->
+                 CompletionStage<? extends T> g,
->
+                 Function<? super T,U> a) {
->
+                return f.applyToEitherAsync(g, a);
->
+            }
->
+        },
->
->
+        EXECUTOR {
->
+            public void checkExecutionMode() {
->
+                assertTrue(ThreadExecutor.startedCurrentThread());
->
+            }
->
+            public CompletableFuture<Void> runAsync(Runnable a) {
->
+                return CompletableFuture.runAsync(a, new ThreadExecutor());
->
+            }
->
+            public <U> CompletableFuture<U> supplyAsync(Supplier<U> a) {
->
+                return CompletableFuture.supplyAsync(a, new ThreadExecutor());
->
+            }
->
+            public <T> CompletableFuture<Void> thenRun
->
+                (CompletableFuture<T> f, Runnable a) {
->
+                return f.thenRunAsync(a, new ThreadExecutor());
->
+            }
->
+            public <T> CompletableFuture<Void> thenAccept
->
+                (CompletableFuture<T> f, Consumer<? super T> a) {
->
+                return f.thenAcceptAsync(a, new ThreadExecutor());
->
+            }
->
+            public <T,U> CompletableFuture<U> thenApply
->
+                (CompletableFuture<T> f, Function<? super T,U> a) {
->
+                return f.thenApplyAsync(a, new ThreadExecutor());
->
+            }
->
+            public <T,U> CompletableFuture<U> thenCompose
->
+                (CompletableFuture<T> f,
->
+                 Function<? super T,? extends CompletionStage<U>> a) {
->
+                return f.thenComposeAsync(a, new ThreadExecutor());
->
+            }
->
+            public <T,U> CompletableFuture<U> handle
->
+                (CompletableFuture<T> f,
->
+                 BiFunction<? super T,Throwable,? extends U> a) {
->
+                return f.handleAsync(a, new ThreadExecutor());
->
+            }
->
+            public <T> CompletableFuture<T> whenComplete
->
+                (CompletableFuture<T> f,
->
+                 BiConsumer<? super T,? super Throwable> a) {
->
+                return f.whenCompleteAsync(a, new ThreadExecutor());
->
+            }
->
+            public <T,U> CompletableFuture<Void> runAfterBoth
->
+                (CompletableFuture<T> f, CompletableFuture<U> g, Runnable a) {
->
+                return f.runAfterBothAsync(g, a, new ThreadExecutor());
->
+            }
->
+            public <T,U> CompletableFuture<Void> thenAcceptBoth
->
+                (CompletableFuture<T> f,
->
+                 CompletionStage<? extends U> g,
->
+                 BiConsumer<? super T,? super U> a) {
->
+                return f.thenAcceptBothAsync(g, a, new ThreadExecutor());
->
+            }
->
+            public <T,U,V> CompletableFuture<V> thenCombine
->
+                (CompletableFuture<T> f,
->
+                 CompletionStage<? extends U> g,
->
+                 BiFunction<? super T,? super U,? extends V> a) {
->
+                return f.thenCombineAsync(g, a, new ThreadExecutor());
->
+            }
->
+            public <T> CompletableFuture<Void> runAfterEither
->
+                (CompletableFuture<T> f,
->
+                 CompletionStage<?> g,
->
+                 java.lang.Runnable a) {
->
+                return f.runAfterEitherAsync(g, a, new ThreadExecutor());
->
+            }
->
+            public <T> CompletableFuture<Void> acceptEither
->
+                (CompletableFuture<T> f,
->
+                 CompletionStage<? extends T> g,
->
+                 Consumer<? super T> a) {
->
+                return f.acceptEitherAsync(g, a, new ThreadExecutor());
->
+            }
->
+            public <T,U> CompletableFuture<U> applyToEither
->
+                (CompletableFuture<T> f,
->
+                 CompletionStage<? extends T> g,
->
+                 Function<? super T,U> a) {
->
+                return f.applyToEitherAsync(g, a, new ThreadExecutor());
->
+            }
->
+        };
->
->
+        public abstract void checkExecutionMode();
->
+        public abstract CompletableFuture<Void> runAsync(Runnable a);
->
+        public abstract <U> CompletableFuture<U> supplyAsync(Supplier<U> a);
->
+        public abstract <T> CompletableFuture<Void> thenRun
->
+            (CompletableFuture<T> f, Runnable a);
->
+        public abstract <T> CompletableFuture<Void> thenAccept
->
+            (CompletableFuture<T> f, Consumer<? super T> a);
->
+        public abstract <T,U> CompletableFuture<U> thenApply
->
+            (CompletableFuture<T> f, Function<? super T,U> a);
->
+        public abstract <T,U> CompletableFuture<U> thenCompose
->
+            (CompletableFuture<T> f,
->
+             Function<? super T,? extends CompletionStage<U>> a);
->
+        public abstract <T,U> CompletableFuture<U> handle
->
+            (CompletableFuture<T> f,
->
+             BiFunction<? super T,Throwable,? extends U> a);
->
+        public abstract <T> CompletableFuture<T> whenComplete
->
+            (CompletableFuture<T> f,
->
+             BiConsumer<? super T,? super Throwable> a);
->
+        public abstract <T,U> CompletableFuture<Void> runAfterBoth
->
+            (CompletableFuture<T> f, CompletableFuture<U> g, Runnable a);
->
+        public abstract <T,U> CompletableFuture<Void> thenAcceptBoth
->
+            (CompletableFuture<T> f,
->
+             CompletionStage<? extends U> g,
->
+             BiConsumer<? super T,? super U> a);
->
+        public abstract <T,U,V> CompletableFuture<V> thenCombine
->
+            (CompletableFuture<T> f,
->
+             CompletionStage<? extends U> g,
->
+             BiFunction<? super T,? super U,? extends V> a);
->
+        public abstract <T> CompletableFuture<Void> runAfterEither
->
+            (CompletableFuture<T> f,
->
+             CompletionStage<?> g,
->
+             java.lang.Runnable a);
->
+        public abstract <T> CompletableFuture<Void> acceptEither
->
+            (CompletableFuture<T> f,
->
+             CompletionStage<? extends T> g,
->
+             Consumer<? super T> a);
->
+        public abstract <T,U> CompletableFuture<U> applyToEither
->
+            (CompletableFuture<T> f,
->
+             CompletionStage<? extends T> g,
->
+             Function<? super T,U> a);
->
+    }
->
->
+    /**
->
+     * exceptionally action is not invoked when source completes
->
+     * normally, and source result is propagated
->
+     */
->
+    public void testExceptionally_normalCompletion() {
->
+        for (boolean createIncomplete : new boolean[] { true, false })
->
+        for (Integer v1 : new Integer[] { 1, null })
->
+    {
->
+        final AtomicInteger a = new AtomicInteger(0);
->
+        final CompletableFuture<Integer> f = new CompletableFuture<>();
->
+        if (!createIncomplete) assertTrue(f.complete(v1));
->
+        final CompletableFuture<Integer> g = f.exceptionally
->
+            ((Throwable t) -> {
->
+                a.getAndIncrement();
->
+                threadFail("should not be called");
->
+                return null;            // unreached
->
+            });
->
+        if (createIncomplete) assertTrue(f.complete(v1));
->
->
+        checkCompletedNormally(g, v1);
->
+        checkCompletedNormally(f, v1);
->
+        assertEquals(0, a.get());
->
+    }}
->
->
+    /**
->
+     * exceptionally action completes with function value on source
->
+     * exception
->
+     */
->
+    public void testExceptionally_exceptionalCompletion() {
->
+        for (boolean createIncomplete : new boolean[] { true, false })
->
+        for (Integer v1 : new Integer[] { 1, null })
->
+    {
->
+        final AtomicInteger a = new AtomicInteger(0);
->
+        final CFException ex = new CFException();
->
+        final CompletableFuture<Integer> f = new CompletableFuture<>();
->
+        if (!createIncomplete) f.completeExceptionally(ex);
->
+        final CompletableFuture<Integer> g = f.exceptionally
->
+            ((Throwable t) -> {
->
+                ExecutionMode.SYNC.checkExecutionMode();
->
+                threadAssertSame(t, ex);
->
+                a.getAndIncrement();
->
+                return v1;
->
+            });
->
+        if (createIncomplete) f.completeExceptionally(ex);
->
->
+        checkCompletedNormally(g, v1);
->
+        assertEquals(1, a.get());
->
+    }}
->
->
+    /**
->
+     * If an "exceptionally action" throws an exception, it completes
->
+     * exceptionally with that exception
->
+     */
->
+    public void testExceptionally_exceptionalCompletionActionFailed() {
->
+        for (boolean createIncomplete : new boolean[] { true, false })
->
+    {
->
+        final AtomicInteger a = new AtomicInteger(0);
->
+        final CFException ex1 = new CFException();
->
+        final CFException ex2 = new CFException();
->
+        final CompletableFuture<Integer> f = new CompletableFuture<>();
->
+        if (!createIncomplete) f.completeExceptionally(ex1);
->
+        final CompletableFuture<Integer> g = f.exceptionally
->
+            ((Throwable t) -> {
->
+                ExecutionMode.SYNC.checkExecutionMode();
->
+                threadAssertSame(t, ex1);
->
+                a.getAndIncrement();
->
+                throw ex2;
->
+            });
->
+        if (createIncomplete) f.completeExceptionally(ex1);
->
->
+        checkCompletedWithWrappedException(g, ex2);
->
+        checkCompletedExceptionally(f, ex1);
->
+        assertEquals(1, a.get());
->
+    }}
->
->
+    /**
->
+     * whenComplete action executes on normal completion, propagating
->
+     * source result.
->
+     */
->
+    public void testWhenComplete_normalCompletion() {
->
+        for (ExecutionMode m : ExecutionMode.values())
->
+        for (boolean createIncomplete : new boolean[] { true, false })
->
+        for (Integer v1 : new Integer[] { 1, null })
->
+    {
->
+        final AtomicInteger a = new AtomicInteger(0);
->
+        final CompletableFuture<Integer> f = new CompletableFuture<>();
->
+        if (!createIncomplete) assertTrue(f.complete(v1));
->
+        final CompletableFuture<Integer> g = m.whenComplete
->
+            (f,
->
+             (Integer result, Throwable t) -> {
->
+                m.checkExecutionMode();
->
+                threadAssertSame(result, v1);
->
+                threadAssertNull(t);
->
+                a.getAndIncrement();
->
+            });
->
+        if (createIncomplete) assertTrue(f.complete(v1));
->
->
+        checkCompletedNormally(g, v1);
->
+        checkCompletedNormally(f, v1);
->
+        assertEquals(1, a.get());
->
+    }}
->
->
+    /**
->
+     * whenComplete action executes on exceptional completion, propagating
->
+     * source result.
->
+     */
->
+    public void testWhenComplete_exceptionalCompletion() {
->
+        for (ExecutionMode m : ExecutionMode.values())
->
+        for (boolean createIncomplete : new boolean[] { true, false })
->
+    {
->
+        final AtomicInteger a = new AtomicInteger(0);
->
+        final CFException ex = new CFException();
->
+        final CompletableFuture<Integer> f = new CompletableFuture<>();
->
+        if (!createIncomplete) f.completeExceptionally(ex);
->
+        final CompletableFuture<Integer> g = m.whenComplete
->
+            (f,
->
+             (Integer result, Throwable t) -> {
->
+                m.checkExecutionMode();
->
+                threadAssertNull(result);
->
+                threadAssertSame(t, ex);
->
+                a.getAndIncrement();
->
+            });
->
+        if (createIncomplete) f.completeExceptionally(ex);
->
->
+        checkCompletedWithWrappedException(g, ex);
->
+        checkCompletedExceptionally(f, ex);
->
+        assertEquals(1, a.get());
->
+    }}
->
->
+    /**
->
+     * whenComplete action executes on cancelled source, propagating
->
+     * CancellationException.
->
+     */
->
+    public void testWhenComplete_sourceCancelled() {
->
+        for (ExecutionMode m : ExecutionMode.values())
->
+        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
->
+        for (boolean createIncomplete : new boolean[] { true, false })
->
+    {
->
+        final AtomicInteger a = new AtomicInteger(0);
->
+        final CompletableFuture<Integer> f = new CompletableFuture<>();
->
+        if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
->
+        final CompletableFuture<Integer> g = m.whenComplete
->
+            (f,
->
+             (Integer result, Throwable t) -> {
->
+                m.checkExecutionMode();
->
+                threadAssertNull(result);
->
+                threadAssertTrue(t instanceof CancellationException);
->
+                a.getAndIncrement();
->
+            });
->
+        if (createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
->
->
+        checkCompletedWithWrappedCancellationException(g);
->
+        checkCancelled(f);
->
+        assertEquals(1, a.get());
->
+    }}
->
->
+    /**
->
+     * If a whenComplete action throws an exception when triggered by
->
+     * a normal completion, it completes exceptionally
->
+     */
->
+    public void testWhenComplete_sourceCompletedNormallyActionFailed() {
->
+        for (boolean createIncomplete : new boolean[] { true, false })
->
+        for (ExecutionMode m : ExecutionMode.values())
->
+        for (Integer v1 : new Integer[] { 1, null })
->
+    {
->
+        final AtomicInteger a = new AtomicInteger(0);
->
+        final CFException ex = new CFException();
->
+        final CompletableFuture<Integer> f = new CompletableFuture<>();
->
+        if (!createIncomplete) assertTrue(f.complete(v1));
->
+        final CompletableFuture<Integer> g = m.whenComplete
->
+            (f,
->
+             (Integer result, Throwable t) -> {
->
+                m.checkExecutionMode();
->
+                threadAssertSame(result, v1);
->
+                threadAssertNull(t);
->
+                a.getAndIncrement();
->
+                throw ex;
->
+            });
->
+        if (createIncomplete) assertTrue(f.complete(v1));
->
->
+        checkCompletedWithWrappedException(g, ex);
->
+        checkCompletedNormally(f, v1);
->
+        assertEquals(1, a.get());
->
+    }}
->
->
+    /**
->
+     * If a whenComplete action throws an exception when triggered by
->
+     * a source completion that also throws an exception, the source
->
+     * exception takes precedence (unlike handle)
->
+     */
->
+    public void testWhenComplete_sourceFailedActionFailed() {
->
+        for (boolean createIncomplete : new boolean[] { true, false })
->
+        for (ExecutionMode m : ExecutionMode.values())
->
+    {
->
+        final AtomicInteger a = new AtomicInteger(0);
->
+        final CFException ex1 = new CFException();
->
+        final CFException ex2 = new CFException();
->
+        final CompletableFuture<Integer> f = new CompletableFuture<>();
->
->
+        if (!createIncomplete) f.completeExceptionally(ex1);
->
+        final CompletableFuture<Integer> g = m.whenComplete
->
+            (f,
->
+             (Integer result, Throwable t) -> {
->
+                m.checkExecutionMode();
->
+                threadAssertSame(t, ex1);
->
+                threadAssertNull(result);
->
+                a.getAndIncrement();
->
+                throw ex2;
->
+            });
->
+        if (createIncomplete) f.completeExceptionally(ex1);
->
->
+        checkCompletedWithWrappedException(g, ex1);
->
+        checkCompletedExceptionally(f, ex1);
->
+        if (testImplementationDetails) {
->
+            assertEquals(1, ex1.getSuppressed().length);
->
+            assertSame(ex2, ex1.getSuppressed()[0]);
->
+        }
->
+        assertEquals(1, a.get());
->
+    }}
->
->
+    /**
->
+     * handle action completes normally with function value on normal
->
+     * completion of source
->
+     */
->
+    public void testHandle_normalCompletion() {
->
+        for (ExecutionMode m : ExecutionMode.values())
->
+        for (boolean createIncomplete : new boolean[] { true, false })
->
+        for (Integer v1 : new Integer[] { 1, null })
->
+    {
->
+        final CompletableFuture<Integer> f = new CompletableFuture<>();
->
+        final AtomicInteger a = new AtomicInteger(0);
->
+        if (!createIncomplete) assertTrue(f.complete(v1));
->
+        final CompletableFuture<Integer> g = m.handle
->
+            (f,
->
+             (Integer result, Throwable t) -> {
->
+                m.checkExecutionMode();
->
+                threadAssertSame(result, v1);
->
+                threadAssertNull(t);
->
+                a.getAndIncrement();
->
+                return inc(v1);
->
+            });
->
+        if (createIncomplete) assertTrue(f.complete(v1));
->
->
+        checkCompletedNormally(g, inc(v1));
->
+        checkCompletedNormally(f, v1);
->
+        assertEquals(1, a.get());
->
+    }}
->
->
+    /**
->
+     * handle action completes normally with function value on
->
+     * exceptional completion of source
->
+     */
->
+    public void testHandle_exceptionalCompletion() {
->
+        for (ExecutionMode m : ExecutionMode.values())
->
+        for (boolean createIncomplete : new boolean[] { true, false })
->
+        for (Integer v1 : new Integer[] { 1, null })
->
+    {
->
+        final CompletableFuture<Integer> f = new CompletableFuture<>();
->
+        final AtomicInteger a = new AtomicInteger(0);
->
+        final CFException ex = new CFException();
->
+        if (!createIncomplete) f.completeExceptionally(ex);
->
+        final CompletableFuture<Integer> g = m.handle
->
+            (f,
->
+             (Integer result, Throwable t) -> {
->
+                m.checkExecutionMode();
->
+                threadAssertNull(result);
->
+                threadAssertSame(t, ex);
->
+                a.getAndIncrement();
->
+                return v1;
->
+            });
->
+        if (createIncomplete) f.completeExceptionally(ex);
->
->
+        checkCompletedNormally(g, v1);
->
+        checkCompletedExceptionally(f, ex);
->
+        assertEquals(1, a.get());
->
+    }}
->
->
+    /**
->
+     * handle action completes normally with function value on
->
+     * cancelled source
->
+     */
->
+    public void testHandle_sourceCancelled() {
->
+        for (ExecutionMode m : ExecutionMode.values())
->
+        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
->
+        for (boolean createIncomplete : new boolean[] { true, false })
->
+        for (Integer v1 : new Integer[] { 1, null })
->
+    {
->
+        final CompletableFuture<Integer> f = new CompletableFuture<>();
->
+        final AtomicInteger a = new AtomicInteger(0);
->
+        if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
->
+        final CompletableFuture<Integer> g = m.handle
->
+            (f,
->
+             (Integer result, Throwable t) -> {
->
+                m.checkExecutionMode();
->
+                threadAssertNull(result);
->
+                threadAssertTrue(t instanceof CancellationException);
->
+                a.getAndIncrement();
->
+                return v1;
->
+            });
->
+        if (createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
->
->
+        checkCompletedNormally(g, v1);
->
+        checkCancelled(f);
->
+        assertEquals(1, a.get());
->
+    }}
->
->
+    /**
->
+     * If a "handle action" throws an exception when triggered by
->
+     * a normal completion, it completes exceptionally
->
+     */
->
+    public void testHandle_sourceCompletedNormallyActionFailed() {
->
+        for (ExecutionMode m : ExecutionMode.values())
->
+        for (boolean createIncomplete : new boolean[] { true, false })
->
+        for (Integer v1 : new Integer[] { 1, null })
->
+    {
->
+        final CompletableFuture<Integer> f = new CompletableFuture<>();
->
+        final AtomicInteger a = new AtomicInteger(0);
->
+        final CFException ex = new CFException();
->
+        if (!createIncomplete) assertTrue(f.complete(v1));
->
+        final CompletableFuture<Integer> g = m.handle
->
+            (f,
->
+             (Integer result, Throwable t) -> {
->
+                m.checkExecutionMode();
->
+                threadAssertSame(result, v1);
->
+                threadAssertNull(t);
->
+                a.getAndIncrement();
->
+                throw ex;
->
+            });
->
+        if (createIncomplete) assertTrue(f.complete(v1));
->
->
+        checkCompletedWithWrappedException(g, ex);
->
+        checkCompletedNormally(f, v1);
->
+        assertEquals(1, a.get());
->
+    }}
->
->
+    /**
->
+     * If a "handle action" throws an exception when triggered by
->
+     * a source completion that also throws an exception, the action
->
+     * exception takes precedence (unlike whenComplete)
->
+     */
->
+    public void testHandle_sourceFailedActionFailed() {
->
+        for (boolean createIncomplete : new boolean[] { true, false })
->
+        for (ExecutionMode m : ExecutionMode.values())
->
+    {
->
+        final AtomicInteger a = new AtomicInteger(0);
->
+        final CFException ex1 = new CFException();
->
+        final CFException ex2 = new CFException();
->
+        final CompletableFuture<Integer> f = new CompletableFuture<>();
->
->
+        if (!createIncomplete) f.completeExceptionally(ex1);
->
+        final CompletableFuture<Integer> g = m.handle
->
+            (f,
->
+             (Integer result, Throwable t) -> {
->
+                m.checkExecutionMode();
->
+                threadAssertNull(result);
->
+                threadAssertSame(ex1, t);
->
+                a.getAndIncrement();
->
+                throw ex2;
->
+            });
->
+        if (createIncomplete) f.completeExceptionally(ex1);
->
->
+        checkCompletedWithWrappedException(g, ex2);
->
+        checkCompletedExceptionally(f, ex1);
->
+        assertEquals(1, a.get());
->
+    }}
->
->
+    /**
->
+     * runAsync completes after running Runnable
->
+     */
->
+    public void testRunAsync_normalCompletion() {
->
+        ExecutionMode[] executionModes = {
->
+            ExecutionMode.ASYNC,
->
+            ExecutionMode.EXECUTOR,
->
+        };
->
+        for (ExecutionMode m : executionModes)
->
+    {
->
+        final Noop r = new Noop(m);
->
+        final CompletableFuture<Void> f = m.runAsync(r);
->
+        assertNull(f.join());
->
+        checkCompletedNormally(f, null);
->
+        r.assertInvoked();
->
+    }}
->
->
+    /**
->
+     * failing runAsync completes exceptionally after running Runnable
->
+     */
->
+    public void testRunAsync_exceptionalCompletion() {
->
+        ExecutionMode[] executionModes = {
->
+            ExecutionMode.ASYNC,
->
+            ExecutionMode.EXECUTOR,
->
+        };
->
+        for (ExecutionMode m : executionModes)
->
+    {
->
+        final FailingRunnable r = new FailingRunnable(m);
->
+        final CompletableFuture<Void> f = m.runAsync(r);
->
+        checkCompletedWithWrappedException(f, r.ex);
->
+        r.assertInvoked();
->
+    }}
->
->
+    @SuppressWarnings("FutureReturnValueIgnored")
->
+    public void testRunAsync_rejectingExecutor() {
->
+        CountingRejectingExecutor e = new CountingRejectingExecutor();
->
+        try {
->
+            CompletableFuture.runAsync(() -> {}, e);
->
+            shouldThrow();
->
+        } catch (Throwable t) {
->
+            assertSame(e.ex, t);
->
+        }
->
->
+        assertEquals(1, e.count.get());
->
+    }
->
->
+    /**
->
+     * supplyAsync completes with result of supplier
->
+     */
->
+    public void testSupplyAsync_normalCompletion() {
->
+        ExecutionMode[] executionModes = {
->
+            ExecutionMode.ASYNC,
->
+            ExecutionMode.EXECUTOR,
->
+        };
->
+        for (ExecutionMode m : executionModes)
->
+        for (Integer v1 : new Integer[] { 1, null })
->
+    {
->
+        final IntegerSupplier r = new IntegerSupplier(m, v1);
->
+        final CompletableFuture<Integer> f = m.supplyAsync(r);
->
+        assertSame(v1, f.join());
->
+        checkCompletedNormally(f, v1);
->
+        r.assertInvoked();
->
+    }}
->
->
+    /**
->
+     * Failing supplyAsync completes exceptionally
->
+     */
->
+    public void testSupplyAsync_exceptionalCompletion() {
->
+        ExecutionMode[] executionModes = {
->
+            ExecutionMode.ASYNC,
->
+            ExecutionMode.EXECUTOR,
->
+        };
->
+        for (ExecutionMode m : executionModes)
->
+    {
->
+        FailingSupplier r = new FailingSupplier(m);
->
+        CompletableFuture<Integer> f = m.supplyAsync(r);
->
+        checkCompletedWithWrappedException(f, r.ex);
->
+        r.assertInvoked();
->
+    }}
->
->
+    @SuppressWarnings("FutureReturnValueIgnored")
->
+    public void testSupplyAsync_rejectingExecutor() {
->
+        CountingRejectingExecutor e = new CountingRejectingExecutor();
->
+        try {
->
+            CompletableFuture.supplyAsync(() -> null, e);
->
+            shouldThrow();
->
+        } catch (Throwable t) {
->
+            assertSame(e.ex, t);
->
+        }
->
->
+        assertEquals(1, e.count.get());
->
+    }
->
->
+    // seq completion methods
->
->
+    /**
->
+     * thenRun result completes normally after normal completion of source
->
+     */
->
+    public void testThenRun_normalCompletion() {
->
+        for (ExecutionMode m : ExecutionMode.values())
->
+        for (Integer v1 : new Integer[] { 1, null })
->
+    {
->
+        final CompletableFuture<Integer> f = new CompletableFuture<>();
->
+        final Noop[] rs = new Noop[6];
->
+        for (int i = 0; i < rs.length; i++) rs[i] = new Noop(m);
->
->
+        final CompletableFuture<Void> h0 = m.thenRun(f, rs[0]);
->
+        final CompletableFuture<Void> h1 = m.runAfterBoth(f, f, rs[1]);
->
+        final CompletableFuture<Void> h2 = m.runAfterEither(f, f, rs[2]);
->
+        checkIncomplete(h0);
->
+        checkIncomplete(h1);
->
+        checkIncomplete(h2);
->
+        assertTrue(f.complete(v1));
->
+        final CompletableFuture<Void> h3 = m.thenRun(f, rs[3]);
->
+        final CompletableFuture<Void> h4 = m.runAfterBoth(f, f, rs[4]);
->
+        final CompletableFuture<Void> h5 = m.runAfterEither(f, f, rs[5]);
->
->
+        checkCompletedNormally(h0, null);
->
+        checkCompletedNormally(h1, null);
->
+        checkCompletedNormally(h2, null);
->
+        checkCompletedNormally(h3, null);
->
+        checkCompletedNormally(h4, null);
->
+        checkCompletedNormally(h5, null);
->
+        checkCompletedNormally(f, v1);
->
+        for (Noop r : rs) r.assertInvoked();
->
+    }}
->
->
+    /**
->
+     * thenRun result completes exceptionally after exceptional
->
+     * completion of source
->
+     */
->
+    public void testThenRun_exceptionalCompletion() {
->
+        for (ExecutionMode m : ExecutionMode.values())
->
+    {
->
+        final CFException ex = new CFException();
->
+        final CompletableFuture<Integer> f = new CompletableFuture<>();
->
+        final Noop[] rs = new Noop[6];
->
+        for (int i = 0; i < rs.length; i++) rs[i] = new Noop(m);
->
->
+        final CompletableFuture<Void> h0 = m.thenRun(f, rs[0]);
->
+        final CompletableFuture<Void> h1 = m.runAfterBoth(f, f, rs[1]);
->
+        final CompletableFuture<Void> h2 = m.runAfterEither(f, f, rs[2]);
->
+        checkIncomplete(h0);
->
+        checkIncomplete(h1);
->
+        checkIncomplete(h2);
->
+        assertTrue(f.completeExceptionally(ex));
->
+        final CompletableFuture<Void> h3 = m.thenRun(f, rs[3]);
->
+        final CompletableFuture<Void> h4 = m.runAfterBoth(f, f, rs[4]);
->
+        final CompletableFuture<Void> h5 = m.runAfterEither(f, f, rs[5]);
->
->
+        checkCompletedWithWrappedException(h0, ex);
->
+        checkCompletedWithWrappedException(h1, ex);
->
+        checkCompletedWithWrappedException(h2, ex);
->
+        checkCompletedWithWrappedException(h3, ex);
->
+        checkCompletedWithWrappedException(h4, ex);
->
+        checkCompletedWithWrappedException(h5, ex);
->
+        checkCompletedExceptionally(f, ex);
->
+        for (Noop r : rs) r.assertNotInvoked();
->
+    }}
->
->
+    /**
->
+     * thenRun result completes exceptionally if source cancelled
->
+     */
->
+    public void testThenRun_sourceCancelled() {
->
+        for (ExecutionMode m : ExecutionMode.values())
->
+        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
->
+    {
->
+        final CompletableFuture<Integer> f = new CompletableFuture<>();
->
+        final Noop[] rs = new Noop[6];
->
+        for (int i = 0; i < rs.length; i++) rs[i] = new Noop(m);
->
->
+        final CompletableFuture<Void> h0 = m.thenRun(f, rs[0]);
->
+        final CompletableFuture<Void> h1 = m.runAfterBoth(f, f, rs[1]);
->
+        final CompletableFuture<Void> h2 = m.runAfterEither(f, f, rs[2]);
->
+        checkIncomplete(h0);
->
+        checkIncomplete(h1);
->
+        checkIncomplete(h2);
->
+        assertTrue(f.cancel(mayInterruptIfRunning));
->
+        final CompletableFuture<Void> h3 = m.thenRun(f, rs[3]);
->
+        final CompletableFuture<Void> h4 = m.runAfterBoth(f, f, rs[4]);
->
+        final CompletableFuture<Void> h5 = m.runAfterEither(f, f, rs[5]);
->
->
+        checkCompletedWithWrappedCancellationException(h0);
->
+        checkCompletedWithWrappedCancellationException(h1);
->
+        checkCompletedWithWrappedCancellationException(h2);
->
+        checkCompletedWithWrappedCancellationException(h3);
->
+        checkCompletedWithWrappedCancellationException(h4);
->
+        checkCompletedWithWrappedCancellationException(h5);
->
+        checkCancelled(f);
->
+        for (Noop r : rs) r.assertNotInvoked();
->
+    }}
->
->
+    /**
->
+     * thenRun result completes exceptionally if action does
->
+     */
->
+    public void testThenRun_actionFailed() {
->
+        for (ExecutionMode m : ExecutionMode.values())
->
+        for (Integer v1 : new Integer[] { 1, null })
->
+    {
->
+        final CompletableFuture<Integer> f = new CompletableFuture<>();
->
+        final FailingRunnable[] rs = new FailingRunnable[6];
->
+        for (int i = 0; i < rs.length; i++) rs[i] = new FailingRunnable(m);
->
->
+        final CompletableFuture<Void> h0 = m.thenRun(f, rs[0]);
->
+        final CompletableFuture<Void> h1 = m.runAfterBoth(f, f, rs[1]);
->
+        final CompletableFuture<Void> h2 = m.runAfterEither(f, f, rs[2]);
->
+        assertTrue(f.complete(v1));
->
+        final CompletableFuture<Void> h3 = m.thenRun(f, rs[3]);
->
+        final CompletableFuture<Void> h4 = m.runAfterBoth(f, f, rs[4]);
->
+        final CompletableFuture<Void> h5 = m.runAfterEither(f, f, rs[5]);
->
->
+        checkCompletedWithWrappedException(h0, rs[0].ex);
->
+        checkCompletedWithWrappedException(h1, rs[1].ex);
->
+        checkCompletedWithWrappedException(h2, rs[2].ex);
->
+        checkCompletedWithWrappedException(h3, rs[3].ex);
->
+        checkCompletedWithWrappedException(h4, rs[4].ex);
->
+        checkCompletedWithWrappedException(h5, rs[5].ex);
->
+        checkCompletedNormally(f, v1);
->
+    }}
->
->
+    /**
->
+     * thenApply result completes normally after normal completion of source
->
+     */
->
+    public void testThenApply_normalCompletion() {
->
+        for (ExecutionMode m : ExecutionMode.values())
->
+        for (Integer v1 : new Integer[] { 1, null })
->
+    {
->
+        final CompletableFuture<Integer> f = new CompletableFuture<>();
->
+        final IncFunction[] rs = new IncFunction[4];
->
+        for (int i = 0; i < rs.length; i++) rs[i] = new IncFunction(m);
->
->
+        final CompletableFuture<Integer> h0 = m.thenApply(f, rs[0]);
->
+        final CompletableFuture<Integer> h1 = m.applyToEither(f, f, rs[1]);
->
+        checkIncomplete(h0);
->
+        checkIncomplete(h1);
->
+        assertTrue(f.complete(v1));
->
+        final CompletableFuture<Integer> h2 = m.thenApply(f, rs[2]);
->
+        final CompletableFuture<Integer> h3 = m.applyToEither(f, f, rs[3]);
->
->
+        checkCompletedNormally(h0, inc(v1));
->
+        checkCompletedNormally(h1, inc(v1));
->
+        checkCompletedNormally(h2, inc(v1));
->
+        checkCompletedNormally(h3, inc(v1));
->
+        checkCompletedNormally(f, v1);
->
+        for (IncFunction r : rs) r.assertValue(inc(v1));
->
+    }}
->
->
+    /**
->
+     * thenApply result completes exceptionally after exceptional
->
+     * completion of source
->
+     */
->
+    public void testThenApply_exceptionalCompletion() {
->
+        for (ExecutionMode m : ExecutionMode.values())
->
+    {
->
+        final CFException ex = new CFException();
->
+        final CompletableFuture<Integer> f = new CompletableFuture<>();
->
+        final IncFunction[] rs = new IncFunction[4];
->
+        for (int i = 0; i < rs.length; i++) rs[i] = new IncFunction(m);
->
->
+        final CompletableFuture<Integer> h0 = m.thenApply(f, rs[0]);
->
+        final CompletableFuture<Integer> h1 = m.applyToEither(f, f, rs[1]);
->
+        assertTrue(f.completeExceptionally(ex));
->
+        final CompletableFuture<Integer> h2 = m.thenApply(f, rs[2]);
->
+        final CompletableFuture<Integer> h3 = m.applyToEither(f, f, rs[3]);
->
->
+        checkCompletedWithWrappedException(h0, ex);
->
+        checkCompletedWithWrappedException(h1, ex);
->
+        checkCompletedWithWrappedException(h2, ex);
->
+        checkCompletedWithWrappedException(h3, ex);
->
+        checkCompletedExceptionally(f, ex);
->
+        for (IncFunction r : rs) r.assertNotInvoked();
->
+    }}
->
->
+    /**
->
+     * thenApply result completes exceptionally if source cancelled
->
+     */
->
+    public void testThenApply_sourceCancelled() {
->
+        for (ExecutionMode m : ExecutionMode.values())
->
+        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
->
+    {
->
+        final CompletableFuture<Integer> f = new CompletableFuture<>();
->
+        final IncFunction[] rs = new IncFunction[4];
->
+        for (int i = 0; i < rs.length; i++) rs[i] = new IncFunction(m);
->
->
+        final CompletableFuture<Integer> h0 = m.thenApply(f, rs[0]);
->
+        final CompletableFuture<Integer> h1 = m.applyToEither(f, f, rs[1]);
->
+        assertTrue(f.cancel(mayInterruptIfRunning));
->
+        final CompletableFuture<Integer> h2 = m.thenApply(f, rs[2]);
->
+        final CompletableFuture<Integer> h3 = m.applyToEither(f, f, rs[3]);
->
->
+        checkCompletedWithWrappedCancellationException(h0);
->
+        checkCompletedWithWrappedCancellationException(h1);
->
+        checkCompletedWithWrappedCancellationException(h2);
->
+        checkCompletedWithWrappedCancellationException(h3);
->
+        checkCancelled(f);
->
+        for (IncFunction r : rs) r.assertNotInvoked();
->
+    }}
->
->
+    /**
->
+     * thenApply result completes exceptionally if action does
->
+     */
->
+    public void testThenApply_actionFailed() {
->
+        for (ExecutionMode m : ExecutionMode.values())
->
+        for (Integer v1 : new Integer[] { 1, null })
->
+    {
->
+        final CompletableFuture<Integer> f = new CompletableFuture<>();
->
+        final FailingFunction[] rs = new FailingFunction[4];
->
+        for (int i = 0; i < rs.length; i++) rs[i] = new FailingFunction(m);
->
->
+        final CompletableFuture<Integer> h0 = m.thenApply(f, rs[0]);
->
+        final CompletableFuture<Integer> h1 = m.applyToEither(f, f, rs[1]);
->
+        assertTrue(f.complete(v1));
->
+        final CompletableFuture<Integer> h2 = m.thenApply(f, rs[2]);
->
+        final CompletableFuture<Integer> h3 = m.applyToEither(f, f, rs[3]);
->
->
+        checkCompletedWithWrappedException(h0, rs[0].ex);
->
+        checkCompletedWithWrappedException(h1, rs[1].ex);
->
+        checkCompletedWithWrappedException(h2, rs[2].ex);
->
+        checkCompletedWithWrappedException(h3, rs[3].ex);
->
+        checkCompletedNormally(f, v1);
->
+    }}
->
->
+    /**
->
+     * thenAccept result completes normally after normal completion of source
->
+     */
->
+    public void testThenAccept_normalCompletion() {
->
+        for (ExecutionMode m : ExecutionMode.values())
->
+        for (Integer v1 : new Integer[] { 1, null })
->
+    {
->
+        final CompletableFuture<Integer> f = new CompletableFuture<>();
->
+        final NoopConsumer[] rs = new NoopConsumer[4];
->
+        for (int i = 0; i < rs.length; i++) rs[i] = new NoopConsumer(m);
->
->
+        final CompletableFuture<Void> h0 = m.thenAccept(f, rs[0]);
->
+        final CompletableFuture<Void> h1 = m.acceptEither(f, f, rs[1]);
->
+        checkIncomplete(h0);
->
+        checkIncomplete(h1);
->
+        assertTrue(f.complete(v1));
->
+        final CompletableFuture<Void> h2 = m.thenAccept(f, rs[2]);
->
+        final CompletableFuture<Void> h3 = m.acceptEither(f, f, rs[3]);
->
->
+        checkCompletedNormally(h0, null);
->
+        checkCompletedNormally(h1, null);
->
+        checkCompletedNormally(h2, null);
->
+        checkCompletedNormally(h3, null);
->
+        checkCompletedNormally(f, v1);
->
+        for (NoopConsumer r : rs) r.assertValue(v1);
->
+    }}
->
->
+    /**
->
+     * thenAccept result completes exceptionally after exceptional
->
+     * completion of source
->
+     */
->
+    public void testThenAccept_exceptionalCompletion() {
->
+        for (ExecutionMode m : ExecutionMode.values())
->
+    {
->
+        final CFException ex = new CFException();
->
+        final CompletableFuture<Integer> f = new CompletableFuture<>();
->
+        final NoopConsumer[] rs = new NoopConsumer[4];
->
+        for (int i = 0; i < rs.length; i++) rs[i] = new NoopConsumer(m);
->
->
+        final CompletableFuture<Void> h0 = m.thenAccept(f, rs[0]);
->
+        final CompletableFuture<Void> h1 = m.acceptEither(f, f, rs[1]);
->
+        assertTrue(f.completeExceptionally(ex));
->
+        final CompletableFuture<Void> h2 = m.thenAccept(f, rs[2]);
->
+        final CompletableFuture<Void> h3 = m.acceptEither(f, f, rs[3]);
->
->
+        checkCompletedWithWrappedException(h0, ex);
->
+        checkCompletedWithWrappedException(h1, ex);
->
+        checkCompletedWithWrappedException(h2, ex);
->
+        checkCompletedWithWrappedException(h3, ex);
->
+        checkCompletedExceptionally(f, ex);
->
+        for (NoopConsumer r : rs) r.assertNotInvoked();
->
+    }}
->
->
+    /**
->
+     * thenAccept result completes exceptionally if source cancelled
->
+     */
->
+    public void testThenAccept_sourceCancelled() {
->
+        for (ExecutionMode m : ExecutionMode.values())
->
+        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
->
+    {
->
+        final CompletableFuture<Integer> f = new CompletableFuture<>();
->
+        final NoopConsumer[] rs = new NoopConsumer[4];
->
+        for (int i = 0; i < rs.length; i++) rs[i] = new NoopConsumer(m);
->
->
+        final CompletableFuture<Void> h0 = m.thenAccept(f, rs[0]);
->
+        final CompletableFuture<Void> h1 = m.acceptEither(f, f, rs[1]);
->
+        assertTrue(f.cancel(mayInterruptIfRunning));
->
+        final CompletableFuture<Void> h2 = m.thenAccept(f, rs[2]);
->
+        final CompletableFuture<Void> h3 = m.acceptEither(f, f, rs[3]);
->
->
+        checkCompletedWithWrappedCancellationException(h0);
->
+        checkCompletedWithWrappedCancellationException(h1);
->
+        checkCompletedWithWrappedCancellationException(h2);
->
+        checkCompletedWithWrappedCancellationException(h3);
->
+        checkCancelled(f);
->
+        for (NoopConsumer r : rs) r.assertNotInvoked();
->
+    }}
->
->
+    /**
->
+     * thenAccept result completes exceptionally if action does
->
+     */
->
+    public void testThenAccept_actionFailed() {
->
+        for (ExecutionMode m : ExecutionMode.values())
->
+        for (Integer v1 : new Integer[] { 1, null })
->
+    {
->
+        final CompletableFuture<Integer> f = new CompletableFuture<>();
->
+        final FailingConsumer[] rs = new FailingConsumer[4];
->
+        for (int i = 0; i < rs.length; i++) rs[i] = new FailingConsumer(m);
->
->
+        final CompletableFuture<Void> h0 = m.thenAccept(f, rs[0]);
->
+        final CompletableFuture<Void> h1 = m.acceptEither(f, f, rs[1]);
->
+        assertTrue(f.complete(v1));
->
+        final CompletableFuture<Void> h2 = m.thenAccept(f, rs[2]);
->
+        final CompletableFuture<Void> h3 = m.acceptEither(f, f, rs[3]);
->
->
+        checkCompletedWithWrappedException(h0, rs[0].ex);
->
+        checkCompletedWithWrappedException(h1, rs[1].ex);
->
+        checkCompletedWithWrappedException(h2, rs[2].ex);
->
+        checkCompletedWithWrappedException(h3, rs[3].ex);
->
+        checkCompletedNormally(f, v1);
->
+    }}
->
->
+    /**
->
+     * thenCombine result completes normally after normal completion
->
+     * of sources
->
+     */
->
+    public void testThenCombine_normalCompletion() {
->
+        for (ExecutionMode m : ExecutionMode.values())
->
+        for (boolean fFirst : new boolean[] { true, false })
->
+        for (Integer v1 : new Integer[] { 1, null })
->
+        for (Integer v2 : new Integer[] { 2, null })
->
+    {
->
+        final CompletableFuture<Integer> f = new CompletableFuture<>();
->
+        final CompletableFuture<Integer> g = new CompletableFuture<>();
->
+        final SubtractFunction[] rs = new SubtractFunction[6];
->
+        for (int i = 0; i < rs.length; i++) rs[i] = new SubtractFunction(m);
->
->
+        final CompletableFuture<Integer> fst =  fFirst ? f : g;
->
+        final CompletableFuture<Integer> snd = !fFirst ? f : g;
->
+        final Integer w1 =  fFirst ? v1 : v2;
->
+        final Integer w2 = !fFirst ? v1 : v2;
->
->
+        final CompletableFuture<Integer> h0 = m.thenCombine(f, g, rs[0]);
->
+        final CompletableFuture<Integer> h1 = m.thenCombine(fst, fst, rs[1]);
->
+        assertTrue(fst.complete(w1));
->
+        final CompletableFuture<Integer> h2 = m.thenCombine(f, g, rs[2]);
->
+        final CompletableFuture<Integer> h3 = m.thenCombine(fst, fst, rs[3]);
->
+        checkIncomplete(h0); rs[0].assertNotInvoked();
->
+        checkIncomplete(h2); rs[2].assertNotInvoked();
->
+        checkCompletedNormally(h1, subtract(w1, w1));
->
+        checkCompletedNormally(h3, subtract(w1, w1));
->
+        rs[1].assertValue(subtract(w1, w1));
->
+        rs[3].assertValue(subtract(w1, w1));
->
+        assertTrue(snd.complete(w2));
->
+        final CompletableFuture<Integer> h4 = m.thenCombine(f, g, rs[4]);
->
->
+        checkCompletedNormally(h0, subtract(v1, v2));
->
+        checkCompletedNormally(h2, subtract(v1, v2));
->
+        checkCompletedNormally(h4, subtract(v1, v2));
->
+        rs[0].assertValue(subtract(v1, v2));
->
+        rs[2].assertValue(subtract(v1, v2));
->
+        rs[4].assertValue(subtract(v1, v2));
->
->
+        checkCompletedNormally(f, v1);
->
+        checkCompletedNormally(g, v2);
->
+    }}
->
->
+    /**
->
+     * thenCombine result completes exceptionally after exceptional
->
+     * completion of either source
->
+     */
->
+    public void testThenCombine_exceptionalCompletion() throws Throwable {
->
+        for (ExecutionMode m : ExecutionMode.values())
->
+        for (boolean fFirst : new boolean[] { true, false })
->
+        for (boolean failFirst : new boolean[] { true, false })
->
+        for (Integer v1 : new Integer[] { 1, null })
->
+    {
->
+        final CompletableFuture<Integer> f = new CompletableFuture<>();
->
+        final CompletableFuture<Integer> g = new CompletableFuture<>();
->
+        final CFException ex = new CFException();
->
+        final SubtractFunction r1 = new SubtractFunction(m);
->
+        final SubtractFunction r2 = new SubtractFunction(m);
->
+        final SubtractFunction r3 = new SubtractFunction(m);
->
->
+        final CompletableFuture<Integer> fst =  fFirst ? f : g;
->
+        final CompletableFuture<Integer> snd = !fFirst ? f : g;
->
+        final Callable<Boolean> complete1 = failFirst ?
->
+            () -> fst.completeExceptionally(ex) :
->
+            () -> fst.complete(v1);
->
+        final Callable<Boolean> complete2 = failFirst ?
->
+            () -> snd.complete(v1) :
->
+            () -> snd.completeExceptionally(ex);
->
->
+        final CompletableFuture<Integer> h1 = m.thenCombine(f, g, r1);
->
+        assertTrue(complete1.call());
->
+        final CompletableFuture<Integer> h2 = m.thenCombine(f, g, r2);
->
+        checkIncomplete(h1);
->
+        checkIncomplete(h2);
->
+        assertTrue(complete2.call());
->
+        final CompletableFuture<Integer> h3 = m.thenCombine(f, g, r3);
->
->
+        checkCompletedWithWrappedException(h1, ex);
->
+        checkCompletedWithWrappedException(h2, ex);
->
+        checkCompletedWithWrappedException(h3, ex);
->
+        r1.assertNotInvoked();
->
+        r2.assertNotInvoked();
->
+        r3.assertNotInvoked();
->
+        checkCompletedNormally(failFirst ? snd : fst, v1);
->
+        checkCompletedExceptionally(failFirst ? fst : snd, ex);
->
+    }}
->
->
+    /**
->
+     * thenCombine result completes exceptionally if either source cancelled
->
+     */
->
+    public void testThenCombine_sourceCancelled() throws Throwable {
->
+        for (ExecutionMode m : ExecutionMode.values())
->
+        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
->
+        for (boolean fFirst : new boolean[] { true, false })
->
+        for (boolean failFirst : new boolean[] { true, false })
->
+        for (Integer v1 : new Integer[] { 1, null })
->
+    {
->
+        final CompletableFuture<Integer> f = new CompletableFuture<>();
->
+        final CompletableFuture<Integer> g = new CompletableFuture<>();
->
+        final SubtractFunction r1 = new SubtractFunction(m);
->
+        final SubtractFunction r2 = new SubtractFunction(m);
->
+        final SubtractFunction r3 = new SubtractFunction(m);
->
->
+        final CompletableFuture<Integer> fst =  fFirst ? f : g;
->
+        final CompletableFuture<Integer> snd = !fFirst ? f : g;
->
+        final Callable<Boolean> complete1 = failFirst ?
->
+            () -> fst.cancel(mayInterruptIfRunning) :
->
+            () -> fst.complete(v1);
->
+        final Callable<Boolean> complete2 = failFirst ?
->
+            () -> snd.complete(v1) :
->
+            () -> snd.cancel(mayInterruptIfRunning);
->
->
+        final CompletableFuture<Integer> h1 = m.thenCombine(f, g, r1);
->
+        assertTrue(complete1.call());
->
+        final CompletableFuture<Integer> h2 = m.thenCombine(f, g, r2);
->
+        checkIncomplete(h1);
->
+        checkIncomplete(h2);
->
+        assertTrue(complete2.call());
->
+        final CompletableFuture<Integer> h3 = m.thenCombine(f, g, r3);
->
->
+        checkCompletedWithWrappedCancellationException(h1);
->
+        checkCompletedWithWrappedCancellationException(h2);
->
+        checkCompletedWithWrappedCancellationException(h3);
->
+        r1.assertNotInvoked();
->
+        r2.assertNotInvoked();
->
+        r3.assertNotInvoked();
->
+        checkCompletedNormally(failFirst ? snd : fst, v1);
->
+        checkCancelled(failFirst ? fst : snd);
->
+    }}
->
->
+    /**
->
+     * thenCombine result completes exceptionally if action does
->
+     */
->
+    public void testThenCombine_actionFailed() {
->
+        for (ExecutionMode m : ExecutionMode.values())
->
+        for (boolean fFirst : new boolean[] { true, false })
->
+        for (Integer v1 : new Integer[] { 1, null })
->
+        for (Integer v2 : new Integer[] { 2, null })
->
+    {
->
+        final CompletableFuture<Integer> f = new CompletableFuture<>();
->
+        final CompletableFuture<Integer> g = new CompletableFuture<>();
->
+        final FailingBiFunction r1 = new FailingBiFunction(m);
->
+        final FailingBiFunction r2 = new FailingBiFunction(m);
->
+        final FailingBiFunction r3 = new FailingBiFunction(m);
->
->
+        final CompletableFuture<Integer> fst =  fFirst ? f : g;
->
+        final CompletableFuture<Integer> snd = !fFirst ? f : g;
->
+        final Integer w1 =  fFirst ? v1 : v2;
->
+        final Integer w2 = !fFirst ? v1 : v2;
->
->
+        final CompletableFuture<Integer> h1 = m.thenCombine(f, g, r1);
->
+        assertTrue(fst.complete(w1));
->
+        final CompletableFuture<Integer> h2 = m.thenCombine(f, g, r2);
->
+        assertTrue(snd.complete(w2));
->
+        final CompletableFuture<Integer> h3 = m.thenCombine(f, g, r3);
->
->
+        checkCompletedWithWrappedException(h1, r1.ex);
->
+        checkCompletedWithWrappedException(h2, r2.ex);
->
+        checkCompletedWithWrappedException(h3, r3.ex);
->
+        r1.assertInvoked();
->
+        r2.assertInvoked();
->
+        r3.assertInvoked();
->
+        checkCompletedNormally(f, v1);
->
+        checkCompletedNormally(g, v2);
->
+    }}
->
->
+    /**
->
+     * thenAcceptBoth result completes normally after normal
->
+     * completion of sources
->
+     */
->
+    public void testThenAcceptBoth_normalCompletion() {
->
+        for (ExecutionMode m : ExecutionMode.values())
->
+        for (boolean fFirst : new boolean[] { true, false })
->
+        for (Integer v1 : new Integer[] { 1, null })
->
+        for (Integer v2 : new Integer[] { 2, null })
->
+    {
->
+        final CompletableFuture<Integer> f = new CompletableFuture<>();
->
+        final CompletableFuture<Integer> g = new CompletableFuture<>();
->
+        final SubtractAction r1 = new SubtractAction(m);
->
+        final SubtractAction r2 = new SubtractAction(m);
->
+        final SubtractAction r3 = new SubtractAction(m);
->
->
+        final CompletableFuture<Integer> fst =  fFirst ? f : g;
->
+        final CompletableFuture<Integer> snd = !fFirst ? f : g;
->
+        final Integer w1 =  fFirst ? v1 : v2;
->
+        final Integer w2 = !fFirst ? v1 : v2;
->
->
+        final CompletableFuture<Void> h1 = m.thenAcceptBoth(f, g, r1);
->
+        assertTrue(fst.complete(w1));
->
+        final CompletableFuture<Void> h2 = m.thenAcceptBoth(f, g, r2);
->
+        checkIncomplete(h1);
->
+        checkIncomplete(h2);
->
+        r1.assertNotInvoked();
->
+        r2.assertNotInvoked();
->
+        assertTrue(snd.complete(w2));
->
+        final CompletableFuture<Void> h3 = m.thenAcceptBoth(f, g, r3);
->
->
+        checkCompletedNormally(h1, null);
->
+        checkCompletedNormally(h2, null);
->
+        checkCompletedNormally(h3, null);
->
+        r1.assertValue(subtract(v1, v2));
->
+        r2.assertValue(subtract(v1, v2));
->
+        r3.assertValue(subtract(v1, v2));
->
+        checkCompletedNormally(f, v1);
->
+        checkCompletedNormally(g, v2);
->
+    }}
->
->
+    /**
->
+     * thenAcceptBoth result completes exceptionally after exceptional
->
+     * completion of either source
->
+     */
->
+    public void testThenAcceptBoth_exceptionalCompletion() throws Throwable {
->
+        for (ExecutionMode m : ExecutionMode.values())
->
+        for (boolean fFirst : new boolean[] { true, false })
->
+        for (boolean failFirst : new boolean[] { true, false })
->
+        for (Integer v1 : new Integer[] { 1, null })
->
+    {
->
+        final CompletableFuture<Integer> f = new CompletableFuture<>();
->
+        final CompletableFuture<Integer> g = new CompletableFuture<>();
->
+        final CFException ex = new CFException();
->
+        final SubtractAction r1 = new SubtractAction(m);
->
+        final SubtractAction r2 = new SubtractAction(m);
->
+        final SubtractAction r3 = new SubtractAction(m);
->
->
+        final CompletableFuture<Integer> fst =  fFirst ? f : g;
->
+        final CompletableFuture<Integer> snd = !fFirst ? f : g;
->
+        final Callable<Boolean> complete1 = failFirst ?
->
+            () -> fst.completeExceptionally(ex) :
->
+            () -> fst.complete(v1);
->
+        final Callable<Boolean> complete2 = failFirst ?
->
+            () -> snd.complete(v1) :
->
+            () -> snd.completeExceptionally(ex);
->
->
+        final CompletableFuture<Void> h1 = m.thenAcceptBoth(f, g, r1);
->
+        assertTrue(complete1.call());
->
+        final CompletableFuture<Void> h2 = m.thenAcceptBoth(f, g, r2);
->
+        checkIncomplete(h1);
->
+        checkIncomplete(h2);
->
+        assertTrue(complete2.call());
->
+        final CompletableFuture<Void> h3 = m.thenAcceptBoth(f, g, r3);
->
->
+        checkCompletedWithWrappedException(h1, ex);
->
+        checkCompletedWithWrappedException(h2, ex);
->
+        checkCompletedWithWrappedException(h3, ex);
->
+        r1.assertNotInvoked();
->
+        r2.assertNotInvoked();
->
+        r3.assertNotInvoked();
->
+        checkCompletedNormally(failFirst ? snd : fst, v1);
->
+        checkCompletedExceptionally(failFirst ? fst : snd, ex);
->
+    }}
->
->
+    /**
->
+     * thenAcceptBoth result completes exceptionally if either source cancelled
->
+     */
->
+    public void testThenAcceptBoth_sourceCancelled() throws Throwable {
->
+        for (ExecutionMode m : ExecutionMode.values())
->
+        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
->
+        for (boolean fFirst : new boolean[] { true, false })
->
+        for (boolean failFirst : new boolean[] { true, false })
->
+        for (Integer v1 : new Integer[] { 1, null })
->
+    {
->
+        final CompletableFuture<Integer> f = new CompletableFuture<>();
->
+        final CompletableFuture<Integer> g = new CompletableFuture<>();
->
+        final SubtractAction r1 = new SubtractAction(m);
->
+        final SubtractAction r2 = new SubtractAction(m);
->
+        final SubtractAction r3 = new SubtractAction(m);
->
->
+        final CompletableFuture<Integer> fst =  fFirst ? f : g;
->
+        final CompletableFuture<Integer> snd = !fFirst ? f : g;
->
+        final Callable<Boolean> complete1 = failFirst ?
->
+            () -> fst.cancel(mayInterruptIfRunning) :
->
+            () -> fst.complete(v1);
->
+        final Callable<Boolean> complete2 = failFirst ?
->
+            () -> snd.complete(v1) :
->
+            () -> snd.cancel(mayInterruptIfRunning);
->
->
+        final CompletableFuture<Void> h1 = m.thenAcceptBoth(f, g, r1);
->
+        assertTrue(complete1.call());
->
+        final CompletableFuture<Void> h2 = m.thenAcceptBoth(f, g, r2);
->
+        checkIncomplete(h1);
->
+        checkIncomplete(h2);
->
+        assertTrue(complete2.call());
->
+        final CompletableFuture<Void> h3 = m.thenAcceptBoth(f, g, r3);
->
->
+        checkCompletedWithWrappedCancellationException(h1);
->
+        checkCompletedWithWrappedCancellationException(h2);
->
+        checkCompletedWithWrappedCancellationException(h3);
->
+        r1.assertNotInvoked();
->
+        r2.assertNotInvoked();
->
+        r3.assertNotInvoked();
->
+        checkCompletedNormally(failFirst ? snd : fst, v1);
->
+        checkCancelled(failFirst ? fst : snd);
->
+    }}
->
->
+    /**
->
+     * thenAcceptBoth result completes exceptionally if action does
->
+     */
->
+    public void testThenAcceptBoth_actionFailed() {
->
+        for (ExecutionMode m : ExecutionMode.values())
->
+        for (boolean fFirst : new boolean[] { true, false })
->
+        for (Integer v1 : new Integer[] { 1, null })
->
+        for (Integer v2 : new Integer[] { 2, null })
->
+    {
->
+        final CompletableFuture<Integer> f = new CompletableFuture<>();
->
+        final CompletableFuture<Integer> g = new CompletableFuture<>();
->
+        final FailingBiConsumer r1 = new FailingBiConsumer(m);
->
+        final FailingBiConsumer r2 = new FailingBiConsumer(m);
->
+        final FailingBiConsumer r3 = new FailingBiConsumer(m);
->
->
+        final CompletableFuture<Integer> fst =  fFirst ? f : g;
->
+        final CompletableFuture<Integer> snd = !fFirst ? f : g;
->
+        final Integer w1 =  fFirst ? v1 : v2;
->
+        final Integer w2 = !fFirst ? v1 : v2;
->
->
+        final CompletableFuture<Void> h1 = m.thenAcceptBoth(f, g, r1);
->
+        assertTrue(fst.complete(w1));
->
+        final CompletableFuture<Void> h2 = m.thenAcceptBoth(f, g, r2);
->
+        assertTrue(snd.complete(w2));
->
+        final CompletableFuture<Void> h3 = m.thenAcceptBoth(f, g, r3);
->
->
+        checkCompletedWithWrappedException(h1, r1.ex);
->
+        checkCompletedWithWrappedException(h2, r2.ex);
->
+        checkCompletedWithWrappedException(h3, r3.ex);
->
+        r1.assertInvoked();
->
+        r2.assertInvoked();
->
+        r3.assertInvoked();
->
+        checkCompletedNormally(f, v1);
->
+        checkCompletedNormally(g, v2);
->
+    }}
->
->
+    /**
->
+     * runAfterBoth result completes normally after normal
->
+     * completion of sources
->
+     */
->
+    public void testRunAfterBoth_normalCompletion() {
->
+        for (ExecutionMode m : ExecutionMode.values())
->
+        for (boolean fFirst : new boolean[] { true, false })
->
+        for (Integer v1 : new Integer[] { 1, null })
->
+        for (Integer v2 : new Integer[] { 2, null })
->
+    {
->
+        final CompletableFuture<Integer> f = new CompletableFuture<>();
->
+        final CompletableFuture<Integer> g = new CompletableFuture<>();
->
+        final Noop r1 = new Noop(m);
->
+        final Noop r2 = new Noop(m);
->
+        final Noop r3 = new Noop(m);
->
->
+        final CompletableFuture<Integer> fst =  fFirst ? f : g;
->
+        final CompletableFuture<Integer> snd = !fFirst ? f : g;
->
+        final Integer w1 =  fFirst ? v1 : v2;
->
+        final Integer w2 = !fFirst ? v1 : v2;
->
->
+        final CompletableFuture<Void> h1 = m.runAfterBoth(f, g, r1);
->
+        assertTrue(fst.complete(w1));
->
+        final CompletableFuture<Void> h2 = m.runAfterBoth(f, g, r2);
->
+        checkIncomplete(h1);
->
+        checkIncomplete(h2);
->
+        r1.assertNotInvoked();
->
+        r2.assertNotInvoked();
->
+        assertTrue(snd.complete(w2));
->
+        final CompletableFuture<Void> h3 = m.runAfterBoth(f, g, r3);
->
->
+        checkCompletedNormally(h1, null);
->
+        checkCompletedNormally(h2, null);
->
+        checkCompletedNormally(h3, null);
->
+        r1.assertInvoked();
->
+        r2.assertInvoked();
->
+        r3.assertInvoked();
->
+        checkCompletedNormally(f, v1);
->
+        checkCompletedNormally(g, v2);
->
+    }}
->
->
+    /**
->
+     * runAfterBoth result completes exceptionally after exceptional
->
+     * completion of either source
->
+     */
->
+    public void testRunAfterBoth_exceptionalCompletion() throws Throwable {
->
+        for (ExecutionMode m : ExecutionMode.values())
->
+        for (boolean fFirst : new boolean[] { true, false })
->
+        for (boolean failFirst : new boolean[] { true, false })
->
+        for (Integer v1 : new Integer[] { 1, null })
->
+    {
->
+        final CompletableFuture<Integer> f = new CompletableFuture<>();
->
+        final CompletableFuture<Integer> g = new CompletableFuture<>();
->
+        final CFException ex = new CFException();
->
+        final Noop r1 = new Noop(m);
->
+        final Noop r2 = new Noop(m);
->
+        final Noop r3 = new Noop(m);
->
->
+        final CompletableFuture<Integer> fst =  fFirst ? f : g;
->
+        final CompletableFuture<Integer> snd = !fFirst ? f : g;
->
+        final Callable<Boolean> complete1 = failFirst ?
->
+            () -> fst.completeExceptionally(ex) :
->
+            () -> fst.complete(v1);
->
+        final Callable<Boolean> complete2 = failFirst ?
->
+            () -> snd.complete(v1) :
->
+            () -> snd.completeExceptionally(ex);
->
->
+        final CompletableFuture<Void> h1 = m.runAfterBoth(f, g, r1);
->
+        assertTrue(complete1.call());
->
+        final CompletableFuture<Void> h2 = m.runAfterBoth(f, g, r2);
->
+        checkIncomplete(h1);
->
+        checkIncomplete(h2);
->
+        assertTrue(complete2.call());
->
+        final CompletableFuture<Void> h3 = m.runAfterBoth(f, g, r3);
->
->
+        checkCompletedWithWrappedException(h1, ex);
->
+        checkCompletedWithWrappedException(h2, ex);
->
+        checkCompletedWithWrappedException(h3, ex);
->
+        r1.assertNotInvoked();
->
+        r2.assertNotInvoked();
->
+        r3.assertNotInvoked();
->
+        checkCompletedNormally(failFirst ? snd : fst, v1);
->
+        checkCompletedExceptionally(failFirst ? fst : snd, ex);
->
+    }}
->
->
+    /**
->
+     * runAfterBoth result completes exceptionally if either source cancelled
->
+     */
->
+    public void testRunAfterBoth_sourceCancelled() throws Throwable {
->
+        for (ExecutionMode m : ExecutionMode.values())
->
+        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
->
+        for (boolean fFirst : new boolean[] { true, false })
->
+        for (boolean failFirst : new boolean[] { true, false })
->
+        for (Integer v1 : new Integer[] { 1, null })
->
+    {
->
+        final CompletableFuture<Integer> f = new CompletableFuture<>();
->
+        final CompletableFuture<Integer> g = new CompletableFuture<>();
->
+        final Noop r1 = new Noop(m);
->
+        final Noop r2 = new Noop(m);
->
+        final Noop r3 = new Noop(m);
->
->
+        final CompletableFuture<Integer> fst =  fFirst ? f : g;
->
+        final CompletableFuture<Integer> snd = !fFirst ? f : g;
->
+        final Callable<Boolean> complete1 = failFirst ?
->
+            () -> fst.cancel(mayInterruptIfRunning) :
->
+            () -> fst.complete(v1);
->
+        final Callable<Boolean> complete2 = failFirst ?
->
+            () -> snd.complete(v1) :
->
+            () -> snd.cancel(mayInterruptIfRunning);
->
->
+        final CompletableFuture<Void> h1 = m.runAfterBoth(f, g, r1);
->
+        assertTrue(complete1.call());
->
+        final CompletableFuture<Void> h2 = m.runAfterBoth(f, g, r2);
->
+        checkIncomplete(h1);
->
+        checkIncomplete(h2);
->
+        assertTrue(complete2.call());
->
+        final CompletableFuture<Void> h3 = m.runAfterBoth(f, g, r3);
->
->
+        checkCompletedWithWrappedCancellationException(h1);
->
+        checkCompletedWithWrappedCancellationException(h2);
->
+        checkCompletedWithWrappedCancellationException(h3);
->
+        r1.assertNotInvoked();
->
+        r2.assertNotInvoked();
->
+        r3.assertNotInvoked();
->
+        checkCompletedNormally(failFirst ? snd : fst, v1);
->
+        checkCancelled(failFirst ? fst : snd);
->
+    }}
->
->
+    /**
->
+     * runAfterBoth result completes exceptionally if action does
->
+     */
->
+    public void testRunAfterBoth_actionFailed() {
->
+        for (ExecutionMode m : ExecutionMode.values())
->
+        for (boolean fFirst : new boolean[] { true, false })
->
+        for (Integer v1 : new Integer[] { 1, null })
->
+        for (Integer v2 : new Integer[] { 2, null })
->
+    {
->
+        final CompletableFuture<Integer> f = new CompletableFuture<>();
->
+        final CompletableFuture<Integer> g = new CompletableFuture<>();
->
+        final FailingRunnable r1 = new FailingRunnable(m);
->
+        final FailingRunnable r2 = new FailingRunnable(m);
->
+        final FailingRunnable r3 = new FailingRunnable(m);
->
->
+        final CompletableFuture<Integer> fst =  fFirst ? f : g;
->
+        final CompletableFuture<Integer> snd = !fFirst ? f : g;
->
+        final Integer w1 =  fFirst ? v1 : v2;
->
+        final Integer w2 = !fFirst ? v1 : v2;
->
->
+        final CompletableFuture<Void> h1 = m.runAfterBoth(f, g, r1);
->
+        assertTrue(fst.complete(w1));
->
+        final CompletableFuture<Void> h2 = m.runAfterBoth(f, g, r2);
->
+        assertTrue(snd.complete(w2));
->
+        final CompletableFuture<Void> h3 = m.runAfterBoth(f, g, r3);
->
->
+        checkCompletedWithWrappedException(h1, r1.ex);
->
+        checkCompletedWithWrappedException(h2, r2.ex);
->
+        checkCompletedWithWrappedException(h3, r3.ex);
->
+        r1.assertInvoked();
->
+        r2.assertInvoked();
->
+        r3.assertInvoked();
->
+        checkCompletedNormally(f, v1);
->
+        checkCompletedNormally(g, v2);
->
+    }}
->
->
+    /**
->
+     * applyToEither result completes normally after normal completion
->
+     * of either source
->
+     */
->
+    public void testApplyToEither_normalCompletion() {
->
+        for (ExecutionMode m : ExecutionMode.values())
->
+        for (Integer v1 : new Integer[] { 1, null })
->
+        for (Integer v2 : new Integer[] { 2, null })
->
+    {
->
+        final CompletableFuture<Integer> f = new CompletableFuture<>();
->
+        final CompletableFuture<Integer> g = new CompletableFuture<>();
->
+        final IncFunction[] rs = new IncFunction[6];
->
+        for (int i = 0; i < rs.length; i++) rs[i] = new IncFunction(m);
->
->
+        final CompletableFuture<Integer> h0 = m.applyToEither(f, g, rs[0]);
->
+        final CompletableFuture<Integer> h1 = m.applyToEither(g, f, rs[1]);
->
+        checkIncomplete(h0);
->
+        checkIncomplete(h1);
->
+        rs[0].assertNotInvoked();
->
+        rs[1].assertNotInvoked();
->
+        f.complete(v1);
->
+        checkCompletedNormally(h0, inc(v1));
->
+        checkCompletedNormally(h1, inc(v1));
->
+        final CompletableFuture<Integer> h2 = m.applyToEither(f, g, rs[2]);
->
+        final CompletableFuture<Integer> h3 = m.applyToEither(g, f, rs[3]);
->
+        checkCompletedNormally(h2, inc(v1));
->
+        checkCompletedNormally(h3, inc(v1));
->
+        g.complete(v2);
->
->
+        // unspecified behavior - both source completions available
->
+        final CompletableFuture<Integer> h4 = m.applyToEither(f, g, rs[4]);
->
+        final CompletableFuture<Integer> h5 = m.applyToEither(g, f, rs[5]);
->
+        rs[4].assertValue(h4.join());
->
+        rs[5].assertValue(h5.join());
->
+        assertTrue(Objects.equals(inc(v1), h4.join()) ||
->
+                   Objects.equals(inc(v2), h4.join()));
->
+        assertTrue(Objects.equals(inc(v1), h5.join()) ||
->
+                   Objects.equals(inc(v2), h5.join()));
->
->
+        checkCompletedNormally(f, v1);
->
+        checkCompletedNormally(g, v2);
->
+        checkCompletedNormally(h0, inc(v1));
->
+        checkCompletedNormally(h1, inc(v1));
->
+        checkCompletedNormally(h2, inc(v1));
->
+        checkCompletedNormally(h3, inc(v1));
->
+        for (int i = 0; i < 4; i++) rs[i].assertValue(inc(v1));
->
+    }}
->
->
+    /**
->
+     * applyToEither result completes exceptionally after exceptional
->
+     * completion of either source
->
+     */
->
+    public void testApplyToEither_exceptionalCompletion() {
->
+        for (ExecutionMode m : ExecutionMode.values())
->
+        for (Integer v1 : new Integer[] { 1, null })
->
+    {
->
+        final CompletableFuture<Integer> f = new CompletableFuture<>();
->
+        final CompletableFuture<Integer> g = new CompletableFuture<>();
->
+        final CFException ex = new CFException();
->
+        final IncFunction[] rs = new IncFunction[6];
->
+        for (int i = 0; i < rs.length; i++) rs[i] = new IncFunction(m);
->
->
+        final CompletableFuture<Integer> h0 = m.applyToEither(f, g, rs[0]);
->
+        final CompletableFuture<Integer> h1 = m.applyToEither(g, f, rs[1]);
->
+        checkIncomplete(h0);
->
+        checkIncomplete(h1);
->
+        rs[0].assertNotInvoked();
->
+        rs[1].assertNotInvoked();
->
+        f.completeExceptionally(ex);
->
+        checkCompletedWithWrappedException(h0, ex);
->
+        checkCompletedWithWrappedException(h1, ex);
->
+        final CompletableFuture<Integer> h2 = m.applyToEither(f, g, rs[2]);
->
+        final CompletableFuture<Integer> h3 = m.applyToEither(g, f, rs[3]);
->
+        checkCompletedWithWrappedException(h2, ex);
->
+        checkCompletedWithWrappedException(h3, ex);
->
+        g.complete(v1);
->
->
+        // unspecified behavior - both source completions available
->
+        final CompletableFuture<Integer> h4 = m.applyToEither(f, g, rs[4]);
->
+        final CompletableFuture<Integer> h5 = m.applyToEither(g, f, rs[5]);
->
+        try {
->
+            assertEquals(inc(v1), h4.join());
->
+            rs[4].assertValue(inc(v1));
->
+        } catch (CompletionException ok) {
->
+            checkCompletedWithWrappedException(h4, ex);
->
+            rs[4].assertNotInvoked();
->
+        }
->
+        try {
->
+            assertEquals(inc(v1), h5.join());
->
+            rs[5].assertValue(inc(v1));
->
+        } catch (CompletionException ok) {
->
+            checkCompletedWithWrappedException(h5, ex);
->
+            rs[5].assertNotInvoked();
->
+        }
->
->
+        checkCompletedExceptionally(f, ex);
->
+        checkCompletedNormally(g, v1);
->
+        checkCompletedWithWrappedException(h0, ex);
->
+        checkCompletedWithWrappedException(h1, ex);
->
+        checkCompletedWithWrappedException(h2, ex);
->
+        checkCompletedWithWrappedException(h3, ex);
->
+        checkCompletedWithWrappedException(h4, ex);
->
+        for (int i = 0; i < 4; i++) rs[i].assertNotInvoked();
->
+    }}
->
->
+    public void testApplyToEither_exceptionalCompletion2() {
->
+        for (ExecutionMode m : ExecutionMode.values())
->
+        for (boolean fFirst : new boolean[] { true, false })
->
+        for (Integer v1 : new Integer[] { 1, null })
->
+    {
->
+        final CompletableFuture<Integer> f = new CompletableFuture<>();
->
+        final CompletableFuture<Integer> g = new CompletableFuture<>();
->
+        final CFException ex = new CFException();
->
+        final IncFunction[] rs = new IncFunction[6];
->
+        for (int i = 0; i < rs.length; i++) rs[i] = new IncFunction(m);
->
->
+        final CompletableFuture<Integer> h0 = m.applyToEither(f, g, rs[0]);
->
+        final CompletableFuture<Integer> h1 = m.applyToEither(g, f, rs[1]);
->
+        assertTrue(fFirst ? f.complete(v1) : g.completeExceptionally(ex));
->
+        assertTrue(!fFirst ? f.complete(v1) : g.completeExceptionally(ex));
->
+        final CompletableFuture<Integer> h2 = m.applyToEither(f, g, rs[2]);
->
+        final CompletableFuture<Integer> h3 = m.applyToEither(g, f, rs[3]);
->
->
+        // unspecified behavior - both source completions available
->
+        try {
->
+            assertEquals(inc(v1), h0.join());
->
+            rs[0].assertValue(inc(v1));
->
+        } catch (CompletionException ok) {
->
+            checkCompletedWithWrappedException(h0, ex);
->
+            rs[0].assertNotInvoked();
->
+        }
->
+        try {
->
+            assertEquals(inc(v1), h1.join());
->
+            rs[1].assertValue(inc(v1));
->
+        } catch (CompletionException ok) {
->
+            checkCompletedWithWrappedException(h1, ex);
->
+            rs[1].assertNotInvoked();
->
+        }
->
+        try {
->
+            assertEquals(inc(v1), h2.join());
->
+            rs[2].assertValue(inc(v1));
->
+        } catch (CompletionException ok) {
->
+            checkCompletedWithWrappedException(h2, ex);
->
+            rs[2].assertNotInvoked();
->
+        }
->
+        try {
->
+            assertEquals(inc(v1), h3.join());
->
+            rs[3].assertValue(inc(v1));
->
+        } catch (CompletionException ok) {
->
+            checkCompletedWithWrappedException(h3, ex);
->
+            rs[3].assertNotInvoked();
->
+        }
->
->
+        checkCompletedNormally(f, v1);
->
+        checkCompletedExceptionally(g, ex);
->
+    }}
->
->
+    /**
->
+     * applyToEither result completes exceptionally if either source cancelled
->
+     */
->
+    public void testApplyToEither_sourceCancelled() {
->
+        for (ExecutionMode m : ExecutionMode.values())
->
+        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
->
+        for (Integer v1 : new Integer[] { 1, null })
->
+    {
->
+        final CompletableFuture<Integer> f = new CompletableFuture<>();
->
+        final CompletableFuture<Integer> g = new CompletableFuture<>();
->
+        final IncFunction[] rs = new IncFunction[6];
->
+        for (int i = 0; i < rs.length; i++) rs[i] = new IncFunction(m);
->
->
+        final CompletableFuture<Integer> h0 = m.applyToEither(f, g, rs[0]);
->
+        final CompletableFuture<Integer> h1 = m.applyToEither(g, f, rs[1]);
->
+        checkIncomplete(h0);
->
+        checkIncomplete(h1);
->
+        rs[0].assertNotInvoked();
->
+        rs[1].assertNotInvoked();
->
+        f.cancel(mayInterruptIfRunning);
->
+        checkCompletedWithWrappedCancellationException(h0);
->
+        checkCompletedWithWrappedCancellationException(h1);
->
+        final CompletableFuture<Integer> h2 = m.applyToEither(f, g, rs[2]);
->
+        final CompletableFuture<Integer> h3 = m.applyToEither(g, f, rs[3]);
->
+        checkCompletedWithWrappedCancellationException(h2);
->
+        checkCompletedWithWrappedCancellationException(h3);
->
+        g.complete(v1);
->
->
+        // unspecified behavior - both source completions available
->
+        final CompletableFuture<Integer> h4 = m.applyToEither(f, g, rs[4]);
->
+        final CompletableFuture<Integer> h5 = m.applyToEither(g, f, rs[5]);
->
+        try {
->
+            assertEquals(inc(v1), h4.join());
->
+            rs[4].assertValue(inc(v1));
->
+        } catch (CompletionException ok) {
->
+            checkCompletedWithWrappedCancellationException(h4);
->
+            rs[4].assertNotInvoked();
->
+        }
->
+        try {
->
+            assertEquals(inc(v1), h5.join());
->
+            rs[5].assertValue(inc(v1));
->
+        } catch (CompletionException ok) {
->
+            checkCompletedWithWrappedCancellationException(h5);
->
+            rs[5].assertNotInvoked();
->
+        }
->
->
+        checkCancelled(f);
->
+        checkCompletedNormally(g, v1);
->
+        checkCompletedWithWrappedCancellationException(h0);
->
+        checkCompletedWithWrappedCancellationException(h1);
->
+        checkCompletedWithWrappedCancellationException(h2);
->
+        checkCompletedWithWrappedCancellationException(h3);
->
+        for (int i = 0; i < 4; i++) rs[i].assertNotInvoked();
->
+    }}
->
->
+    public void testApplyToEither_sourceCancelled2() {
->
+        for (ExecutionMode m : ExecutionMode.values())
->
+        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
->
+        for (boolean fFirst : new boolean[] { true, false })
->
+        for (Integer v1 : new Integer[] { 1, null })
->
+    {
->
+        final CompletableFuture<Integer> f = new CompletableFuture<>();
->
+        final CompletableFuture<Integer> g = new CompletableFuture<>();
->
+        final IncFunction[] rs = new IncFunction[6];
->
+        for (int i = 0; i < rs.length; i++) rs[i] = new IncFunction(m);
->
->
+        final CompletableFuture<Integer> h0 = m.applyToEither(f, g, rs[0]);
->
+        final CompletableFuture<Integer> h1 = m.applyToEither(g, f, rs[1]);
->
+        assertTrue(fFirst ? f.complete(v1) : g.cancel(mayInterruptIfRunning));
->
+        assertTrue(!fFirst ? f.complete(v1) : g.cancel(mayInterruptIfRunning));
->
+        final CompletableFuture<Integer> h2 = m.applyToEither(f, g, rs[2]);
->
+        final CompletableFuture<Integer> h3 = m.applyToEither(g, f, rs[3]);
->
->
+        // unspecified behavior - both source completions available
->
+        try {
->
+            assertEquals(inc(v1), h0.join());
->
+            rs[0].assertValue(inc(v1));
->
+        } catch (CompletionException ok) {
->
+            checkCompletedWithWrappedCancellationException(h0);
->
+            rs[0].assertNotInvoked();
->
+        }
->
+        try {
->
+            assertEquals(inc(v1), h1.join());
->
+            rs[1].assertValue(inc(v1));
->
+        } catch (CompletionException ok) {
->
+            checkCompletedWithWrappedCancellationException(h1);
->
+            rs[1].assertNotInvoked();
->
+        }
->
+        try {
->
+            assertEquals(inc(v1), h2.join());
->
+            rs[2].assertValue(inc(v1));
->
+        } catch (CompletionException ok) {
->
+            checkCompletedWithWrappedCancellationException(h2);
->
+            rs[2].assertNotInvoked();
->
+        }
->
+        try {
->
+            assertEquals(inc(v1), h3.join());
->
+            rs[3].assertValue(inc(v1));
->
+        } catch (CompletionException ok) {
->
+            checkCompletedWithWrappedCancellationException(h3);
->
+            rs[3].assertNotInvoked();
->
+        }
->
->
+        checkCompletedNormally(f, v1);
->
+        checkCancelled(g);
->
+    }}
->
->
+    /**
->
+     * applyToEither result completes exceptionally if action does
->
+     */
->
+    public void testApplyToEither_actionFailed() {
->
+        for (ExecutionMode m : ExecutionMode.values())
->
+        for (Integer v1 : new Integer[] { 1, null })
->
+        for (Integer v2 : new Integer[] { 2, null })
->
+    {
->
+        final CompletableFuture<Integer> f = new CompletableFuture<>();
->
+        final CompletableFuture<Integer> g = new CompletableFuture<>();
->
+        final FailingFunction[] rs = new FailingFunction[6];
->
+        for (int i = 0; i < rs.length; i++) rs[i] = new FailingFunction(m);
->
->
+        final CompletableFuture<Integer> h0 = m.applyToEither(f, g, rs[0]);
->
+        final CompletableFuture<Integer> h1 = m.applyToEither(g, f, rs[1]);
->
+        f.complete(v1);
->
+        final CompletableFuture<Integer> h2 = m.applyToEither(f, g, rs[2]);
->
+        final CompletableFuture<Integer> h3 = m.applyToEither(g, f, rs[3]);
->
+        checkCompletedWithWrappedException(h0, rs[0].ex);
->
+        checkCompletedWithWrappedException(h1, rs[1].ex);
->
+        checkCompletedWithWrappedException(h2, rs[2].ex);
->
+        checkCompletedWithWrappedException(h3, rs[3].ex);
->
+        for (int i = 0; i < 4; i++) rs[i].assertValue(v1);
->
->
+        g.complete(v2);
->
->
+        // unspecified behavior - both source completions available
->
+        final CompletableFuture<Integer> h4 = m.applyToEither(f, g, rs[4]);
->
+        final CompletableFuture<Integer> h5 = m.applyToEither(g, f, rs[5]);
->
->
+        checkCompletedWithWrappedException(h4, rs[4].ex);
->
+        assertTrue(Objects.equals(v1, rs[4].value) ||
->
+                   Objects.equals(v2, rs[4].value));
->
+        checkCompletedWithWrappedException(h5, rs[5].ex);
->
+        assertTrue(Objects.equals(v1, rs[5].value) ||
->
+                   Objects.equals(v2, rs[5].value));
->
->
+        checkCompletedNormally(f, v1);
->
+        checkCompletedNormally(g, v2);
->
+    }}
->
->
+    /**
->
+     * acceptEither result completes normally after normal completion
->
+     * of either source
->
+     */
->
+    public void testAcceptEither_normalCompletion() {
->
+        for (ExecutionMode m : ExecutionMode.values())
->
+        for (Integer v1 : new Integer[] { 1, null })
->
+        for (Integer v2 : new Integer[] { 2, null })
->
+    {
->
+        final CompletableFuture<Integer> f = new CompletableFuture<>();
->
+        final CompletableFuture<Integer> g = new CompletableFuture<>();
->
+        final NoopConsumer[] rs = new NoopConsumer[6];
->
+        for (int i = 0; i < rs.length; i++) rs[i] = new NoopConsumer(m);
->
->
+        final CompletableFuture<Void> h0 = m.acceptEither(f, g, rs[0]);
->
+        final CompletableFuture<Void> h1 = m.acceptEither(g, f, rs[1]);
->
+        checkIncomplete(h0);
->
+        checkIncomplete(h1);
->
+        rs[0].assertNotInvoked();
->
+        rs[1].assertNotInvoked();
->
+        f.complete(v1);
->
+        checkCompletedNormally(h0, null);
->
+        checkCompletedNormally(h1, null);
->
+        rs[0].assertValue(v1);
->
+        rs[1].assertValue(v1);
->
+        final CompletableFuture<Void> h2 = m.acceptEither(f, g, rs[2]);
->
+        final CompletableFuture<Void> h3 = m.acceptEither(g, f, rs[3]);
->
+        checkCompletedNormally(h2, null);
->
+        checkCompletedNormally(h3, null);
->
+        rs[2].assertValue(v1);
->
+        rs[3].assertValue(v1);
->
+        g.complete(v2);
->
->
+        // unspecified behavior - both source completions available
->
+        final CompletableFuture<Void> h4 = m.acceptEither(f, g, rs[4]);
->
+        final CompletableFuture<Void> h5 = m.acceptEither(g, f, rs[5]);
->
+        checkCompletedNormally(h4, null);
->
+        checkCompletedNormally(h5, null);
->
+        assertTrue(Objects.equals(v1, rs[4].value) ||
->
+                   Objects.equals(v2, rs[4].value));
->
+        assertTrue(Objects.equals(v1, rs[5].value) ||
->
+                   Objects.equals(v2, rs[5].value));
->
->
+        checkCompletedNormally(f, v1);
->
+        checkCompletedNormally(g, v2);
->
+        checkCompletedNormally(h0, null);
->
+        checkCompletedNormally(h1, null);
->
+        checkCompletedNormally(h2, null);
->
+        checkCompletedNormally(h3, null);
->
+        for (int i = 0; i < 4; i++) rs[i].assertValue(v1);
->
+    }}
->
->
+    /**
->
+     * acceptEither result completes exceptionally after exceptional
->
+     * completion of either source
->
+     */
->
+    public void testAcceptEither_exceptionalCompletion() {
->
+        for (ExecutionMode m : ExecutionMode.values())
->
+        for (Integer v1 : new Integer[] { 1, null })
->
+    {
->
+        final CompletableFuture<Integer> f = new CompletableFuture<>();
->
+        final CompletableFuture<Integer> g = new CompletableFuture<>();
->
+        final CFException ex = new CFException();
->
+        final NoopConsumer[] rs = new NoopConsumer[6];
->
+        for (int i = 0; i < rs.length; i++) rs[i] = new NoopConsumer(m);
->
->
+        final CompletableFuture<Void> h0 = m.acceptEither(f, g, rs[0]);
->
+        final CompletableFuture<Void> h1 = m.acceptEither(g, f, rs[1]);
->
+        checkIncomplete(h0);
->
+        checkIncomplete(h1);
->
+        rs[0].assertNotInvoked();
->
+        rs[1].assertNotInvoked();
->
+        f.completeExceptionally(ex);
->
+        checkCompletedWithWrappedException(h0, ex);
->
+        checkCompletedWithWrappedException(h1, ex);
->
+        final CompletableFuture<Void> h2 = m.acceptEither(f, g, rs[2]);
->
+        final CompletableFuture<Void> h3 = m.acceptEither(g, f, rs[3]);
->
+        checkCompletedWithWrappedException(h2, ex);
->
+        checkCompletedWithWrappedException(h3, ex);
->
->
+        g.complete(v1);
->
->
+        // unspecified behavior - both source completions available
->
+        final CompletableFuture<Void> h4 = m.acceptEither(f, g, rs[4]);
->
+        final CompletableFuture<Void> h5 = m.acceptEither(g, f, rs[5]);
->
+        try {
->
+            assertNull(h4.join());
->
+            rs[4].assertValue(v1);
->
+        } catch (CompletionException ok) {
->
+            checkCompletedWithWrappedException(h4, ex);
->
+            rs[4].assertNotInvoked();
->
+        }
->
+        try {
->
+            assertNull(h5.join());
->
+            rs[5].assertValue(v1);
->
+        } catch (CompletionException ok) {
->
+            checkCompletedWithWrappedException(h5, ex);
->
+            rs[5].assertNotInvoked();
->
+        }
->
->
+        checkCompletedExceptionally(f, ex);
->
+        checkCompletedNormally(g, v1);
->
+        checkCompletedWithWrappedException(h0, ex);
->
+        checkCompletedWithWrappedException(h1, ex);
->
+        checkCompletedWithWrappedException(h2, ex);
->
+        checkCompletedWithWrappedException(h3, ex);
->
+        checkCompletedWithWrappedException(h4, ex);
->
+        for (int i = 0; i < 4; i++) rs[i].assertNotInvoked();
->
+    }}
->
->
+    public void testAcceptEither_exceptionalCompletion2() {
->
+        for (ExecutionMode m : ExecutionMode.values())
->
+        for (boolean fFirst : new boolean[] { true, false })
->
+        for (Integer v1 : new Integer[] { 1, null })
->
+    {
->
+        final CompletableFuture<Integer> f = new CompletableFuture<>();
->
+        final CompletableFuture<Integer> g = new CompletableFuture<>();
->
+        final CFException ex = new CFException();
->
+        final NoopConsumer[] rs = new NoopConsumer[6];
->
+        for (int i = 0; i < rs.length; i++) rs[i] = new NoopConsumer(m);
->
->
+        final CompletableFuture<Void> h0 = m.acceptEither(f, g, rs[0]);
->
+        final CompletableFuture<Void> h1 = m.acceptEither(g, f, rs[1]);
->
+        assertTrue(fFirst ? f.complete(v1) : g.completeExceptionally(ex));
->
+        assertTrue(!fFirst ? f.complete(v1) : g.completeExceptionally(ex));
->
+        final CompletableFuture<Void> h2 = m.acceptEither(f, g, rs[2]);
->
+        final CompletableFuture<Void> h3 = m.acceptEither(g, f, rs[3]);
->
->
+        // unspecified behavior - both source completions available
->
+        try {
->
+            assertNull(h0.join());
->
+            rs[0].assertValue(v1);
->
+        } catch (CompletionException ok) {
->
+            checkCompletedWithWrappedException(h0, ex);
->
+            rs[0].assertNotInvoked();
->
+        }
->
+        try {
->
+            assertNull(h1.join());
->
+            rs[1].assertValue(v1);
->
+        } catch (CompletionException ok) {
->
+            checkCompletedWithWrappedException(h1, ex);
->
+            rs[1].assertNotInvoked();
->
+        }
->
+        try {
->
+            assertNull(h2.join());
->
+            rs[2].assertValue(v1);
->
+        } catch (CompletionException ok) {
->
+            checkCompletedWithWrappedException(h2, ex);
->
+            rs[2].assertNotInvoked();
->
+        }
->
+        try {
->
+            assertNull(h3.join());
->
+            rs[3].assertValue(v1);
->
+        } catch (CompletionException ok) {
->
+            checkCompletedWithWrappedException(h3, ex);
->
+            rs[3].assertNotInvoked();
->
+        }
->
->
+        checkCompletedNormally(f, v1);
->
+        checkCompletedExceptionally(g, ex);
->
+    }}
->
->
+    /**
->
+     * acceptEither result completes exceptionally if either source cancelled
->
+     */
->
+    public void testAcceptEither_sourceCancelled() {
->
+        for (ExecutionMode m : ExecutionMode.values())
->
+        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
->
+        for (Integer v1 : new Integer[] { 1, null })
->
+    {
->
+        final CompletableFuture<Integer> f = new CompletableFuture<>();
->
+        final CompletableFuture<Integer> g = new CompletableFuture<>();
->
+        final NoopConsumer[] rs = new NoopConsumer[6];
->
+        for (int i = 0; i < rs.length; i++) rs[i] = new NoopConsumer(m);
->
->
+        final CompletableFuture<Void> h0 = m.acceptEither(f, g, rs[0]);
->
+        final CompletableFuture<Void> h1 = m.acceptEither(g, f, rs[1]);
->
+        checkIncomplete(h0);
->
+        checkIncomplete(h1);
->
+        rs[0].assertNotInvoked();
->
+        rs[1].assertNotInvoked();
->
+        f.cancel(mayInterruptIfRunning);
->
+        checkCompletedWithWrappedCancellationException(h0);
->
+        checkCompletedWithWrappedCancellationException(h1);
->
+        final CompletableFuture<Void> h2 = m.acceptEither(f, g, rs[2]);
->
+        final CompletableFuture<Void> h3 = m.acceptEither(g, f, rs[3]);
->
+        checkCompletedWithWrappedCancellationException(h2);
->
+        checkCompletedWithWrappedCancellationException(h3);
->
->
+        g.complete(v1);
->
->
+        // unspecified behavior - both source completions available
->
+        final CompletableFuture<Void> h4 = m.acceptEither(f, g, rs[4]);
->
+        final CompletableFuture<Void> h5 = m.acceptEither(g, f, rs[5]);
->
+        try {
->
+            assertNull(h4.join());
->
+            rs[4].assertValue(v1);
->
+        } catch (CompletionException ok) {
->
+            checkCompletedWithWrappedCancellationException(h4);
->
+            rs[4].assertNotInvoked();
->
+        }
->
+        try {
->
+            assertNull(h5.join());
->
+            rs[5].assertValue(v1);
->
+        } catch (CompletionException ok) {
->
+            checkCompletedWithWrappedCancellationException(h5);
->
+            rs[5].assertNotInvoked();
->
+        }
->
->
+        checkCancelled(f);
->
+        checkCompletedNormally(g, v1);
->
+        checkCompletedWithWrappedCancellationException(h0);
->
+        checkCompletedWithWrappedCancellationException(h1);
->
+        checkCompletedWithWrappedCancellationException(h2);
->
+        checkCompletedWithWrappedCancellationException(h3);
->
+        for (int i = 0; i < 4; i++) rs[i].assertNotInvoked();
->
+    }}
->
->
+    /**
->
+     * acceptEither result completes exceptionally if action does
->
+     */
->
+    public void testAcceptEither_actionFailed() {
->
+        for (ExecutionMode m : ExecutionMode.values())
->
+        for (Integer v1 : new Integer[] { 1, null })
->
+        for (Integer v2 : new Integer[] { 2, null })
->
+    {
->
+        final CompletableFuture<Integer> f = new CompletableFuture<>();
->
+        final CompletableFuture<Integer> g = new CompletableFuture<>();
->
+        final FailingConsumer[] rs = new FailingConsumer[6];
->
+        for (int i = 0; i < rs.length; i++) rs[i] = new FailingConsumer(m);
->
->
+        final CompletableFuture<Void> h0 = m.acceptEither(f, g, rs[0]);
->
+        final CompletableFuture<Void> h1 = m.acceptEither(g, f, rs[1]);
->
+        f.complete(v1);
->
+        final CompletableFuture<Void> h2 = m.acceptEither(f, g, rs[2]);
->
+        final CompletableFuture<Void> h3 = m.acceptEither(g, f, rs[3]);
->
+        checkCompletedWithWrappedException(h0, rs[0].ex);
->
+        checkCompletedWithWrappedException(h1, rs[1].ex);
->
+        checkCompletedWithWrappedException(h2, rs[2].ex);
->
+        checkCompletedWithWrappedException(h3, rs[3].ex);
->
+        for (int i = 0; i < 4; i++) rs[i].assertValue(v1);
->
->
+        g.complete(v2);
->
->
+        // unspecified behavior - both source completions available
->
+        final CompletableFuture<Void> h4 = m.acceptEither(f, g, rs[4]);
->
+        final CompletableFuture<Void> h5 = m.acceptEither(g, f, rs[5]);
->
->
+        checkCompletedWithWrappedException(h4, rs[4].ex);
->
+        assertTrue(Objects.equals(v1, rs[4].value) ||
->
+                   Objects.equals(v2, rs[4].value));
->
+        checkCompletedWithWrappedException(h5, rs[5].ex);
->
+        assertTrue(Objects.equals(v1, rs[5].value) ||
->
+                   Objects.equals(v2, rs[5].value));
->
->
+        checkCompletedNormally(f, v1);
->
+        checkCompletedNormally(g, v2);
->
+    }}
->
->
+    /**
->
+     * runAfterEither result completes normally after normal completion
->
+     * of either source
->
+     */
->
+    public void testRunAfterEither_normalCompletion() {
->
+        for (ExecutionMode m : ExecutionMode.values())
->
+        for (Integer v1 : new Integer[] { 1, null })
->
+        for (Integer v2 : new Integer[] { 2, null })
->
+        for (boolean pushNop : new boolean[] { true, false })
->
+    {
->
+        final CompletableFuture<Integer> f = new CompletableFuture<>();
->
+        final CompletableFuture<Integer> g = new CompletableFuture<>();
->
+        final Noop[] rs = new Noop[6];
->
+        for (int i = 0; i < rs.length; i++) rs[i] = new Noop(m);
->
->
+        final CompletableFuture<Void> h0 = m.runAfterEither(f, g, rs[0]);
->
+        final CompletableFuture<Void> h1 = m.runAfterEither(g, f, rs[1]);
->
+        checkIncomplete(h0);
->
+        checkIncomplete(h1);
->
+        rs[0].assertNotInvoked();
->
+        rs[1].assertNotInvoked();
->
+        if (pushNop) {          // ad hoc test of intra-completion interference
->
+            m.thenRun(f, () -> {});
->
+            m.thenRun(g, () -> {});
->
+        }
->
+        f.complete(v1);
->
+        checkCompletedNormally(h0, null);
->
+        checkCompletedNormally(h1, null);
->
+        rs[0].assertInvoked();
->
+        rs[1].assertInvoked();
->
+        final CompletableFuture<Void> h2 = m.runAfterEither(f, g, rs[2]);
->
+        final CompletableFuture<Void> h3 = m.runAfterEither(g, f, rs[3]);
->
+        checkCompletedNormally(h2, null);
->
+        checkCompletedNormally(h3, null);
->
+        rs[2].assertInvoked();
->
+        rs[3].assertInvoked();
->
->
+        g.complete(v2);
->
->
+        final CompletableFuture<Void> h4 = m.runAfterEither(f, g, rs[4]);
->
+        final CompletableFuture<Void> h5 = m.runAfterEither(g, f, rs[5]);
->
->
+        checkCompletedNormally(f, v1);
->
+        checkCompletedNormally(g, v2);
->
+        checkCompletedNormally(h0, null);
->
+        checkCompletedNormally(h1, null);
->
+        checkCompletedNormally(h2, null);
->
+        checkCompletedNormally(h3, null);
->
+        checkCompletedNormally(h4, null);
->
+        checkCompletedNormally(h5, null);
->
+        for (int i = 0; i < 6; i++) rs[i].assertInvoked();
->
+    }}
->
->
+    /**
->
+     * runAfterEither result completes exceptionally after exceptional
->
+     * completion of either source
->
+     */
->
+    public void testRunAfterEither_exceptionalCompletion() {
->
+        for (ExecutionMode m : ExecutionMode.values())
->
+        for (Integer v1 : new Integer[] { 1, null })
->
+    {
->
+        final CompletableFuture<Integer> f = new CompletableFuture<>();
->
+        final CompletableFuture<Integer> g = new CompletableFuture<>();
->
+        final CFException ex = new CFException();
->
+        final Noop[] rs = new Noop[6];
->
+        for (int i = 0; i < rs.length; i++) rs[i] = new Noop(m);
->
->
+        final CompletableFuture<Void> h0 = m.runAfterEither(f, g, rs[0]);
->
+        final CompletableFuture<Void> h1 = m.runAfterEither(g, f, rs[1]);
->
+        checkIncomplete(h0);
->
+        checkIncomplete(h1);
->
+        rs[0].assertNotInvoked();
->
+        rs[1].assertNotInvoked();
->
+        assertTrue(f.completeExceptionally(ex));
->
+        checkCompletedWithWrappedException(h0, ex);
->
+        checkCompletedWithWrappedException(h1, ex);
->
+        final CompletableFuture<Void> h2 = m.runAfterEither(f, g, rs[2]);
->
+        final CompletableFuture<Void> h3 = m.runAfterEither(g, f, rs[3]);
->
+        checkCompletedWithWrappedException(h2, ex);
->
+        checkCompletedWithWrappedException(h3, ex);
->
->
+        assertTrue(g.complete(v1));
->
->
+        // unspecified behavior - both source completions available
->
+        final CompletableFuture<Void> h4 = m.runAfterEither(f, g, rs[4]);
->
+        final CompletableFuture<Void> h5 = m.runAfterEither(g, f, rs[5]);
->
+        try {
->
+            assertNull(h4.join());
->
+            rs[4].assertInvoked();
->
+        } catch (CompletionException ok) {
->
+            checkCompletedWithWrappedException(h4, ex);
->
+            rs[4].assertNotInvoked();
->
+        }
->
+        try {
->
+            assertNull(h5.join());
->
+            rs[5].assertInvoked();
->
+        } catch (CompletionException ok) {
->
+            checkCompletedWithWrappedException(h5, ex);
->
+            rs[5].assertNotInvoked();
->
+        }
->
->
+        checkCompletedExceptionally(f, ex);
->
+        checkCompletedNormally(g, v1);
->
+        checkCompletedWithWrappedException(h0, ex);
->
+        checkCompletedWithWrappedException(h1, ex);
->
+        checkCompletedWithWrappedException(h2, ex);
->
+        checkCompletedWithWrappedException(h3, ex);
->
+        checkCompletedWithWrappedException(h4, ex);
->
+        for (int i = 0; i < 4; i++) rs[i].assertNotInvoked();
->
+    }}
->
->
+    public void testRunAfterEither_exceptionalCompletion2() {
->
+        for (ExecutionMode m : ExecutionMode.values())
->
+        for (boolean fFirst : new boolean[] { true, false })
->
+        for (Integer v1 : new Integer[] { 1, null })
->
+    {
->
+        final CompletableFuture<Integer> f = new CompletableFuture<>();
->
+        final CompletableFuture<Integer> g = new CompletableFuture<>();
->
+        final CFException ex = new CFException();
->
+        final Noop[] rs = new Noop[6];
->
+        for (int i = 0; i < rs.length; i++) rs[i] = new Noop(m);
->
->
+        final CompletableFuture<Void> h0 = m.runAfterEither(f, g, rs[0]);
->
+        final CompletableFuture<Void> h1 = m.runAfterEither(g, f, rs[1]);
->
+        assertTrue( fFirst ? f.complete(v1) : g.completeExceptionally(ex));
->
+        assertTrue(!fFirst ? f.complete(v1) : g.completeExceptionally(ex));
->
+        final CompletableFuture<Void> h2 = m.runAfterEither(f, g, rs[2]);
->
+        final CompletableFuture<Void> h3 = m.runAfterEither(g, f, rs[3]);
->
->
+        // unspecified behavior - both source completions available
->
+        try {
->
+            assertNull(h0.join());
->
+            rs[0].assertInvoked();
->
+        } catch (CompletionException ok) {
->
+            checkCompletedWithWrappedException(h0, ex);
->
+            rs[0].assertNotInvoked();
->
+        }
->
+        try {
->
+            assertNull(h1.join());
->
+            rs[1].assertInvoked();
->
+        } catch (CompletionException ok) {
->
+            checkCompletedWithWrappedException(h1, ex);
->
+            rs[1].assertNotInvoked();
->
+        }
->
+        try {
->
+            assertNull(h2.join());
->
+            rs[2].assertInvoked();
->
+        } catch (CompletionException ok) {
->
+            checkCompletedWithWrappedException(h2, ex);
->
+            rs[2].assertNotInvoked();
->
+        }
->
+        try {
->
+            assertNull(h3.join());
->
+            rs[3].assertInvoked();
->
+        } catch (CompletionException ok) {
->
+            checkCompletedWithWrappedException(h3, ex);
->
+            rs[3].assertNotInvoked();
->
+        }
->
->
+        checkCompletedNormally(f, v1);
->
+        checkCompletedExceptionally(g, ex);
->
+    }}
->
->
+    /**
->
+     * runAfterEither result completes exceptionally if either source cancelled
->
+     */
->
+    public void testRunAfterEither_sourceCancelled() {
->
+        for (ExecutionMode m : ExecutionMode.values())
->
+        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
->
+        for (Integer v1 : new Integer[] { 1, null })
->
+    {
->
+        final CompletableFuture<Integer> f = new CompletableFuture<>();
->
+        final CompletableFuture<Integer> g = new CompletableFuture<>();
->
+        final Noop[] rs = new Noop[6];
->
+        for (int i = 0; i < rs.length; i++) rs[i] = new Noop(m);
->
->
+        final CompletableFuture<Void> h0 = m.runAfterEither(f, g, rs[0]);
->
+        final CompletableFuture<Void> h1 = m.runAfterEither(g, f, rs[1]);
->
+        checkIncomplete(h0);
->
+        checkIncomplete(h1);
->
+        rs[0].assertNotInvoked();
->
+        rs[1].assertNotInvoked();
->
+        f.cancel(mayInterruptIfRunning);
->
+        checkCompletedWithWrappedCancellationException(h0);
->
+        checkCompletedWithWrappedCancellationException(h1);
->
+        final CompletableFuture<Void> h2 = m.runAfterEither(f, g, rs[2]);
->
+        final CompletableFuture<Void> h3 = m.runAfterEither(g, f, rs[3]);
->
+        checkCompletedWithWrappedCancellationException(h2);
->
+        checkCompletedWithWrappedCancellationException(h3);
->
->
+        assertTrue(g.complete(v1));
->
->
+        // unspecified behavior - both source completions available
->
+        final CompletableFuture<Void> h4 = m.runAfterEither(f, g, rs[4]);
->
+        final CompletableFuture<Void> h5 = m.runAfterEither(g, f, rs[5]);
->
+        try {
->
+            assertNull(h4.join());
->
+            rs[4].assertInvoked();
->
+        } catch (CompletionException ok) {
->
+            checkCompletedWithWrappedCancellationException(h4);
->
+            rs[4].assertNotInvoked();
->
+        }
->
+        try {
->
+            assertNull(h5.join());
->
+            rs[5].assertInvoked();
->
+        } catch (CompletionException ok) {
->
+            checkCompletedWithWrappedCancellationException(h5);
->
+            rs[5].assertNotInvoked();
->
+        }
->
->
+        checkCancelled(f);
->
+        checkCompletedNormally(g, v1);
->
+        checkCompletedWithWrappedCancellationException(h0);
->
+        checkCompletedWithWrappedCancellationException(h1);
->
+        checkCompletedWithWrappedCancellationException(h2);
->
+        checkCompletedWithWrappedCancellationException(h3);
->
+        for (int i = 0; i < 4; i++) rs[i].assertNotInvoked();
->
+    }}
->
->
+    /**
->
+     * runAfterEither result completes exceptionally if action does
->
+     */
->
+    public void testRunAfterEither_actionFailed() {
->
+        for (ExecutionMode m : ExecutionMode.values())
->
+        for (Integer v1 : new Integer[] { 1, null })
->
+        for (Integer v2 : new Integer[] { 2, null })
->
+    {
->
+        final CompletableFuture<Integer> f = new CompletableFuture<>();
->
+        final CompletableFuture<Integer> g = new CompletableFuture<>();
->
+        final FailingRunnable[] rs = new FailingRunnable[6];
->
+        for (int i = 0; i < rs.length; i++) rs[i] = new FailingRunnable(m);
->
->
+        final CompletableFuture<Void> h0 = m.runAfterEither(f, g, rs[0]);
->
+        final CompletableFuture<Void> h1 = m.runAfterEither(g, f, rs[1]);
->
+        assertTrue(f.complete(v1));
->
+        final CompletableFuture<Void> h2 = m.runAfterEither(f, g, rs[2]);
->
+        final CompletableFuture<Void> h3 = m.runAfterEither(g, f, rs[3]);
->
+        checkCompletedWithWrappedException(h0, rs[0].ex);
->
+        checkCompletedWithWrappedException(h1, rs[1].ex);
->
+        checkCompletedWithWrappedException(h2, rs[2].ex);
->
+        checkCompletedWithWrappedException(h3, rs[3].ex);
->
+        for (int i = 0; i < 4; i++) rs[i].assertInvoked();
->
+        assertTrue(g.complete(v2));
->
+        final CompletableFuture<Void> h4 = m.runAfterEither(f, g, rs[4]);
->
+        final CompletableFuture<Void> h5 = m.runAfterEither(g, f, rs[5]);
->
+        checkCompletedWithWrappedException(h4, rs[4].ex);
->
+        checkCompletedWithWrappedException(h5, rs[5].ex);
->
->
+        checkCompletedNormally(f, v1);
->
+        checkCompletedNormally(g, v2);
->
+        for (int i = 0; i < 6; i++) rs[i].assertInvoked();
->
+    }}
->
->
+    /**
->
+     * thenCompose result completes normally after normal completion of source
->
+     */
->
+    public void testThenCompose_normalCompletion() {
->
+        for (ExecutionMode m : ExecutionMode.values())
->
+        for (boolean createIncomplete : new boolean[] { true, false })
->
+        for (Integer v1 : new Integer[] { 1, null })
->
+    {
->
+        final CompletableFuture<Integer> f = new CompletableFuture<>();
->
+        final CompletableFutureInc r = new CompletableFutureInc(m);
->
+        if (!createIncomplete) assertTrue(f.complete(v1));
->
+        final CompletableFuture<Integer> g = m.thenCompose(f, r);
->
+        if (createIncomplete) assertTrue(f.complete(v1));
->
->
+        checkCompletedNormally(g, inc(v1));
->
+        checkCompletedNormally(f, v1);
->
+        r.assertValue(v1);
->
+    }}
->
->
+    /**
->
+     * thenCompose result completes exceptionally after exceptional
->
+     * completion of source
->
+     */
->
+    public void testThenCompose_exceptionalCompletion() {
->
+        for (ExecutionMode m : ExecutionMode.values())
->
+        for (boolean createIncomplete : new boolean[] { true, false })
->
+    {
->
+        final CFException ex = new CFException();
->
+        final CompletableFutureInc r = new CompletableFutureInc(m);
->
+        final CompletableFuture<Integer> f = new CompletableFuture<>();
->
+        if (!createIncomplete) f.completeExceptionally(ex);
->
+        final CompletableFuture<Integer> g = m.thenCompose(f, r);
->
+        if (createIncomplete) f.completeExceptionally(ex);
->
->
+        checkCompletedWithWrappedException(g, ex);
->
+        checkCompletedExceptionally(f, ex);
->
+        r.assertNotInvoked();
->
+    }}
->
->
+    /**
->
+     * thenCompose result completes exceptionally if action does
->
+     */
->
+    public void testThenCompose_actionFailed() {
->
+        for (ExecutionMode m : ExecutionMode.values())
->
+        for (boolean createIncomplete : new boolean[] { true, false })
->
+        for (Integer v1 : new Integer[] { 1, null })
->
+    {
->
+        final CompletableFuture<Integer> f = new CompletableFuture<>();
->
+        final FailingCompletableFutureFunction r
->
+            = new FailingCompletableFutureFunction(m);
->
+        if (!createIncomplete) assertTrue(f.complete(v1));
->
+        final CompletableFuture<Integer> g = m.thenCompose(f, r);
->
+        if (createIncomplete) assertTrue(f.complete(v1));
->
->
+        checkCompletedWithWrappedException(g, r.ex);
->
+        checkCompletedNormally(f, v1);
->
+    }}
->
->
+    /**
->
+     * thenCompose result completes exceptionally if source cancelled
->
+     */
->
+    public void testThenCompose_sourceCancelled() {
->
+        for (ExecutionMode m : ExecutionMode.values())
->
+        for (boolean createIncomplete : new boolean[] { true, false })
->
+        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
->
+    {
->
+        final CompletableFuture<Integer> f = new CompletableFuture<>();
->
+        final CompletableFutureInc r = new CompletableFutureInc(m);
->
+        if (!createIncomplete) assertTrue(f.cancel(mayInterruptIfRunning));
->
+        final CompletableFuture<Integer> g = m.thenCompose(f, r);
->
+        if (createIncomplete) {
->
+            checkIncomplete(g);
->
+            assertTrue(f.cancel(mayInterruptIfRunning));
->
+        }
->
->
+        checkCompletedWithWrappedCancellationException(g);
->
+        checkCancelled(f);
->
+    }}
->
->
+    /**
->
+     * thenCompose result completes exceptionally if the result of the action does
->
+     */
->
+    public void testThenCompose_actionReturnsFailingFuture() {
->
+        for (ExecutionMode m : ExecutionMode.values())
->
+        for (int order = 0; order < 6; order++)
->
+        for (Integer v1 : new Integer[] { 1, null })
->
+    {
->
+        final CFException ex = new CFException();
->
+        final CompletableFuture<Integer> f = new CompletableFuture<>();
->
+        final CompletableFuture<Integer> g = new CompletableFuture<>();
->
+        final CompletableFuture<Integer> h;
->
+        // Test all permutations of orders
->
+        switch (order) {
->
+        case 0:
->
+            assertTrue(f.complete(v1));
->
+            assertTrue(g.completeExceptionally(ex));
->
+            h = m.thenCompose(f, (x -> g));
->
+            break;
->
+        case 1:
->
+            assertTrue(f.complete(v1));
->
+            h = m.thenCompose(f, (x -> g));
->
+            assertTrue(g.completeExceptionally(ex));
->
+            break;
->
+        case 2:
->
+            assertTrue(g.completeExceptionally(ex));
->
+            assertTrue(f.complete(v1));
->
+            h = m.thenCompose(f, (x -> g));
->
+            break;
->
+        case 3:
->
+            assertTrue(g.completeExceptionally(ex));
->
+            h = m.thenCompose(f, (x -> g));
->
+            assertTrue(f.complete(v1));
->
+            break;
->
+        case 4:
->
+            h = m.thenCompose(f, (x -> g));
->
+            assertTrue(f.complete(v1));
->
+            assertTrue(g.completeExceptionally(ex));
->
+            break;
->
+        case 5:
->
+            h = m.thenCompose(f, (x -> g));
->
+            assertTrue(f.complete(v1));
->
+            assertTrue(g.completeExceptionally(ex));
->
+            break;
->
+        default: throw new AssertionError();
->
+        }
->
->
+        checkCompletedExceptionally(g, ex);
->
+        checkCompletedWithWrappedException(h, ex);
->
+        checkCompletedNormally(f, v1);
->
+    }}
->
->
+    // other static methods
->
->
+    /**
->
+     * allOf(no component futures) returns a future completed normally
->
+     * with the value null
->
+     */
->
+    public void testAllOf_empty() throws Exception {
->
+        CompletableFuture<Void> f = CompletableFuture.allOf();
->
+        checkCompletedNormally(f, null);
->
+    }
->
->
+    /**
->
+     * allOf returns a future completed normally with the value null
->
+     * when all components complete normally
->
+     */
->
+    public void testAllOf_normal() throws Exception {
->
+        for (int k = 1; k < 10; k++) {
->
+            CompletableFuture<Integer>[] fs
->
+                = (CompletableFuture<Integer>[]) new CompletableFuture[k];
->
+            for (int i = 0; i < k; i++)
->
+                fs[i] = new CompletableFuture<>();
->
+            CompletableFuture<Void> f = CompletableFuture.allOf(fs);
->
+            for (int i = 0; i < k; i++) {
->
+                checkIncomplete(f);
->
+                checkIncomplete(CompletableFuture.allOf(fs));
->
+                fs[i].complete(one);
->
+            }
->
+            checkCompletedNormally(f, null);
->
+            checkCompletedNormally(CompletableFuture.allOf(fs), null);
->
+        }
->
+    }
->
->
+    public void testAllOf_normal_backwards() throws Exception {
->
+        for (int k = 1; k < 10; k++) {
->
+            CompletableFuture<Integer>[] fs
->
+                = (CompletableFuture<Integer>[]) new CompletableFuture[k];
->
+            for (int i = 0; i < k; i++)
->
+                fs[i] = new CompletableFuture<>();
->
+            CompletableFuture<Void> f = CompletableFuture.allOf(fs);
->
+            for (int i = k - 1; i >= 0; i--) {
->
+                checkIncomplete(f);
->
+                checkIncomplete(CompletableFuture.allOf(fs));
->
+                fs[i].complete(one);
->
+            }
->
+            checkCompletedNormally(f, null);
->
+            checkCompletedNormally(CompletableFuture.allOf(fs), null);
->
+        }
->
+    }
->
->
+    public void testAllOf_exceptional() throws Exception {
->
+        for (int k = 1; k < 10; k++) {
->
+            CompletableFuture<Integer>[] fs
->
+                = (CompletableFuture<Integer>[]) new CompletableFuture[k];
->
+            CFException ex = new CFException();
->
+            for (int i = 0; i < k; i++)
->
+                fs[i] = new CompletableFuture<>();
->
+            CompletableFuture<Void> f = CompletableFuture.allOf(fs);
->
+            for (int i = 0; i < k; i++) {
->
+                checkIncomplete(f);
->
+                checkIncomplete(CompletableFuture.allOf(fs));
->
+                if (i != k / 2) {
->
+                    fs[i].complete(i);
->
+                    checkCompletedNormally(fs[i], i);
->
+                } else {
->
+                    fs[i].completeExceptionally(ex);
->
+                    checkCompletedExceptionally(fs[i], ex);
->
+                }
->
+            }
->
+            checkCompletedWithWrappedException(f, ex);
->
+            checkCompletedWithWrappedException(CompletableFuture.allOf(fs), ex);
->
+        }
->
+    }
->
->
+    /**
->
+     * anyOf(no component futures) returns an incomplete future
->
+     */
->
+    public void testAnyOf_empty() throws Exception {
->
+        for (Integer v1 : new Integer[] { 1, null })
->
+    {
->
+        CompletableFuture<Object> f = CompletableFuture.anyOf();
->
+        checkIncomplete(f);
->
->
+        f.complete(v1);
->
+        checkCompletedNormally(f, v1);
->
+    }}
->
->
+    /**
->
+     * anyOf returns a future completed normally with a value when
->
+     * a component future does
->
+     */
->
+    public void testAnyOf_normal() throws Exception {
->
+        for (int k = 0; k < 10; k++) {
->
+            CompletableFuture[] fs = new CompletableFuture[k];
->
+            for (int i = 0; i < k; i++)
->
+                fs[i] = new CompletableFuture<>();
->
+            CompletableFuture<Object> f = CompletableFuture.anyOf(fs);
->
+            checkIncomplete(f);
->
+            for (int i = 0; i < k; i++) {
->
+                fs[i].complete(i);
->
+                checkCompletedNormally(f, 0);
->
+                int x = (int) CompletableFuture.anyOf(fs).join();
->
+                assertTrue(0 <= x && x <= i);
->
+            }
->
+        }
->
+    }
->
+    public void testAnyOf_normal_backwards() throws Exception {
->
+        for (int k = 0; k < 10; k++) {
->
+            CompletableFuture[] fs = new CompletableFuture[k];
->
+            for (int i = 0; i < k; i++)
->
+                fs[i] = new CompletableFuture<>();
->
+            CompletableFuture<Object> f = CompletableFuture.anyOf(fs);
->
+            checkIncomplete(f);
->
+            for (int i = k - 1; i >= 0; i--) {
->
+                fs[i].complete(i);
->
+                checkCompletedNormally(f, k - 1);
->
+                int x = (int) CompletableFuture.anyOf(fs).join();
->
+                assertTrue(i <= x && x <= k - 1);
->
+            }
->
+        }
->
+    }
->
->
+    /**
->
+     * anyOf result completes exceptionally when any component does.
->
+     */
->
+    public void testAnyOf_exceptional() throws Exception {
->
+        for (int k = 0; k < 10; k++) {
->
+            CompletableFuture[] fs = new CompletableFuture[k];
->
+            CFException[] exs = new CFException[k];
->
+            for (int i = 0; i < k; i++) {
->
+                fs[i] = new CompletableFuture<>();
->
+                exs[i] = new CFException();
->
+            }
->
+            CompletableFuture<Object> f = CompletableFuture.anyOf(fs);
->
+            checkIncomplete(f);
->
+            for (int i = 0; i < k; i++) {
->
+                fs[i].completeExceptionally(exs[i]);
->
+                checkCompletedWithWrappedException(f, exs[0]);
->
+                checkCompletedWithWrappedCFException(CompletableFuture.anyOf(fs));
->
+            }
->
+        }
->
+    }
->
->
+    public void testAnyOf_exceptional_backwards() throws Exception {
->
+        for (int k = 0; k < 10; k++) {
->
+            CompletableFuture[] fs = new CompletableFuture[k];
->
+            CFException[] exs = new CFException[k];
->
+            for (int i = 0; i < k; i++) {
->
+                fs[i] = new CompletableFuture<>();
->
+                exs[i] = new CFException();
->
+            }
->
+            CompletableFuture<Object> f = CompletableFuture.anyOf(fs);
->
+            checkIncomplete(f);
->
+            for (int i = k - 1; i >= 0; i--) {
->
+                fs[i].completeExceptionally(exs[i]);
->
+                checkCompletedWithWrappedException(f, exs[k - 1]);
->
+                checkCompletedWithWrappedCFException(CompletableFuture.anyOf(fs));
->
+            }
->
+        }
->
+    }
->
->
+    /**
->
+     * Completion methods throw NullPointerException with null arguments
->
+     */
->
+    @SuppressWarnings("FutureReturnValueIgnored")
->
+    public void testNPE() {
->
+        CompletableFuture<Integer> f = new CompletableFuture<>();
->
+        CompletableFuture<Integer> g = new CompletableFuture<>();
->
+        CompletableFuture<Integer> nullFuture = (CompletableFuture<Integer>)null;
->
+        ThreadExecutor exec = new ThreadExecutor();
->
->
+        Runnable[] throwingActions = {
->
+            () -> CompletableFuture.supplyAsync(null),
->
+            () -> CompletableFuture.supplyAsync(null, exec),
->
+            () -> CompletableFuture.supplyAsync(new IntegerSupplier(ExecutionMode.SYNC, 42), null),
->
->
+            () -> CompletableFuture.runAsync(null),
->
+            () -> CompletableFuture.runAsync(null, exec),
->
+            () -> CompletableFuture.runAsync(() -> {}, null),
->
->
+            () -> f.completeExceptionally(null),
->
->
+            () -> f.thenApply(null),
->
+            () -> f.thenApplyAsync(null),
->
+            () -> f.thenApplyAsync(x -> x, null),
->
+            () -> f.thenApplyAsync(null, exec),
->
->
+            () -> f.thenAccept(null),
->
+            () -> f.thenAcceptAsync(null),
->
+            () -> f.thenAcceptAsync(x -> {} , null),
->
+            () -> f.thenAcceptAsync(null, exec),
->
->
+            () -> f.thenRun(null),
->
+            () -> f.thenRunAsync(null),
->
+            () -> f.thenRunAsync(() -> {} , null),
->
+            () -> f.thenRunAsync(null, exec),
->
->
+            () -> f.thenCombine(g, null),
->
+            () -> f.thenCombineAsync(g, null),
->
+            () -> f.thenCombineAsync(g, null, exec),
->
+            () -> f.thenCombine(nullFuture, (x, y) -> x),
->
+            () -> f.thenCombineAsync(nullFuture, (x, y) -> x),
->
+            () -> f.thenCombineAsync(nullFuture, (x, y) -> x, exec),
->
+            () -> f.thenCombineAsync(g, (x, y) -> x, null),
->
->
+            () -> f.thenAcceptBoth(g, null),
->
+            () -> f.thenAcceptBothAsync(g, null),
->
+            () -> f.thenAcceptBothAsync(g, null, exec),
->
+            () -> f.thenAcceptBoth(nullFuture, (x, y) -> {}),
->
+            () -> f.thenAcceptBothAsync(nullFuture, (x, y) -> {}),
->
+            () -> f.thenAcceptBothAsync(nullFuture, (x, y) -> {}, exec),
->
+            () -> f.thenAcceptBothAsync(g, (x, y) -> {}, null),
->
->
+            () -> f.runAfterBoth(g, null),
->
+            () -> f.runAfterBothAsync(g, null),
->
+            () -> f.runAfterBothAsync(g, null, exec),
->
+            () -> f.runAfterBoth(nullFuture, () -> {}),
->
+            () -> f.runAfterBothAsync(nullFuture, () -> {}),
->
+            () -> f.runAfterBothAsync(nullFuture, () -> {}, exec),
->
+            () -> f.runAfterBothAsync(g, () -> {}, null),
->
->
+            () -> f.applyToEither(g, null),
->
+            () -> f.applyToEitherAsync(g, null),
->
+            () -> f.applyToEitherAsync(g, null, exec),
->
+            () -> f.applyToEither(nullFuture, x -> x),
->
+            () -> f.applyToEitherAsync(nullFuture, x -> x),
->
+            () -> f.applyToEitherAsync(nullFuture, x -> x, exec),
->
+            () -> f.applyToEitherAsync(g, x -> x, null),
->
->
+            () -> f.acceptEither(g, null),
->
+            () -> f.acceptEitherAsync(g, null),
->
+            () -> f.acceptEitherAsync(g, null, exec),
->
+            () -> f.acceptEither(nullFuture, x -> {}),
->
+            () -> f.acceptEitherAsync(nullFuture, x -> {}),
->
+            () -> f.acceptEitherAsync(nullFuture, x -> {}, exec),
->
+            () -> f.acceptEitherAsync(g, x -> {}, null),
->
->
+            () -> f.runAfterEither(g, null),
->
+            () -> f.runAfterEitherAsync(g, null),
->
+            () -> f.runAfterEitherAsync(g, null, exec),
->
+            () -> f.runAfterEither(nullFuture, () -> {}),
->
+            () -> f.runAfterEitherAsync(nullFuture, () -> {}),
->
+            () -> f.runAfterEitherAsync(nullFuture, () -> {}, exec),
->
+            () -> f.runAfterEitherAsync(g, () -> {}, null),
->
->
+            () -> f.thenCompose(null),
->
+            () -> f.thenComposeAsync(null),
->
+            () -> f.thenComposeAsync(new CompletableFutureInc(ExecutionMode.EXECUTOR), null),
->
+            () -> f.thenComposeAsync(null, exec),
->
->
+            () -> f.exceptionally(null),
->
->
+            () -> f.handle(null),
->
->
+            () -> CompletableFuture.allOf((CompletableFuture<?>)null),
->
+            () -> CompletableFuture.allOf((CompletableFuture<?>[])null),
->
+            () -> CompletableFuture.allOf(f, null),
->
+            () -> CompletableFuture.allOf(null, f),
->
->
+            () -> CompletableFuture.anyOf((CompletableFuture<?>)null),
->
+            () -> CompletableFuture.anyOf((CompletableFuture<?>[])null),
->
+            () -> CompletableFuture.anyOf(f, null),
->
+            () -> CompletableFuture.anyOf(null, f),
->
->
+            () -> f.obtrudeException(null),
->
->
+            () -> CompletableFuture.delayedExecutor(1L, SECONDS, null),
->
+            () -> CompletableFuture.delayedExecutor(1L, null, exec),
->
+            () -> CompletableFuture.delayedExecutor(1L, null),
->
->
+            () -> f.orTimeout(1L, null),
->
+            () -> f.completeOnTimeout(42, 1L, null),
->
->
+            () -> CompletableFuture.failedFuture(null),
->
+            () -> CompletableFuture.failedStage(null),
->
+        };
->
->
+        assertThrows(NullPointerException.class, throwingActions);
->
+        assertEquals(0, exec.count.get());
->
+    }
->
->
+    /**
->
+     * Test submissions to an executor that rejects all tasks.
->
+     */
->
+    public void testRejectingExecutor() {
->
+        for (Integer v : new Integer[] { 1, null })
->
+    {
->
+        final CountingRejectingExecutor e = new CountingRejectingExecutor();
->
->
+        final CompletableFuture<Integer> complete = CompletableFuture.completedFuture(v);
->
+        final CompletableFuture<Integer> incomplete = new CompletableFuture<>();
->
->
+        List<CompletableFuture<?>> futures = new ArrayList<>();
->
->
+        List<CompletableFuture<Integer>> srcs = new ArrayList<>();
->
+        srcs.add(complete);
->
+        srcs.add(incomplete);
->
->
+        for (CompletableFuture<Integer> src : srcs) {
->
+            List<CompletableFuture<?>> fs = new ArrayList<>();
->
+            fs.add(src.thenRunAsync(() -> {}, e));
->
+            fs.add(src.thenAcceptAsync(z -> {}, e));
->
+            fs.add(src.thenApplyAsync(z -> z, e));
->
->
+            fs.add(src.thenCombineAsync(src, (x, y) -> x, e));
->
+            fs.add(src.thenAcceptBothAsync(src, (x, y) -> {}, e));
->
+            fs.add(src.runAfterBothAsync(src, () -> {}, e));
->
->
+            fs.add(src.applyToEitherAsync(src, z -> z, e));
->
+            fs.add(src.acceptEitherAsync(src, z -> {}, e));
->
+            fs.add(src.runAfterEitherAsync(src, () -> {}, e));
->
->
+            fs.add(src.thenComposeAsync(z -> null, e));
->
+            fs.add(src.whenCompleteAsync((z, t) -> {}, e));
->
+            fs.add(src.handleAsync((z, t) -> null, e));
->
->
+            for (CompletableFuture<?> future : fs) {
->
+                if (src.isDone())
->
+                    checkCompletedWithWrappedException(future, e.ex);
->
+                else
->
+                    checkIncomplete(future);
->
+            }
->
+            futures.addAll(fs);
->
+        }
->
->
+        {
->
+            List<CompletableFuture<?>> fs = new ArrayList<>();
->
->
+            fs.add(complete.thenCombineAsync(incomplete, (x, y) -> x, e));
->
+            fs.add(incomplete.thenCombineAsync(complete, (x, y) -> x, e));
->
->
+            fs.add(complete.thenAcceptBothAsync(incomplete, (x, y) -> {}, e));
->
+            fs.add(incomplete.thenAcceptBothAsync(complete, (x, y) -> {}, e));
->
->
+            fs.add(complete.runAfterBothAsync(incomplete, () -> {}, e));
->
+            fs.add(incomplete.runAfterBothAsync(complete, () -> {}, e));
->
->
+            for (CompletableFuture<?> future : fs)
->
+                checkIncomplete(future);
->
+            futures.addAll(fs);
->
+        }
->
->
+        {
->
+            List<CompletableFuture<?>> fs = new ArrayList<>();
->
->
+            fs.add(complete.applyToEitherAsync(incomplete, z -> z, e));
->
+            fs.add(incomplete.applyToEitherAsync(complete, z -> z, e));
->
->
+            fs.add(complete.acceptEitherAsync(incomplete, z -> {}, e));
->
+            fs.add(incomplete.acceptEitherAsync(complete, z -> {}, e));
->
->
+            fs.add(complete.runAfterEitherAsync(incomplete, () -> {}, e));
->
+            fs.add(incomplete.runAfterEitherAsync(complete, () -> {}, e));
->
->
+            for (CompletableFuture<?> future : fs)
->
+                checkCompletedWithWrappedException(future, e.ex);
->
+            futures.addAll(fs);
->
+        }
->
->
+        incomplete.complete(v);
->
->
+        for (CompletableFuture<?> future : futures)
->
+            checkCompletedWithWrappedException(future, e.ex);
->
->
+        assertEquals(futures.size(), e.count.get());
->
+    }}
->
->
+    /**
->
+     * Test submissions to an executor that rejects all tasks, but
->
+     * should never be invoked because the dependent future is
->
+     * explicitly completed.
->
+     */
->
+    public void testRejectingExecutorNeverInvoked() {
->
+        for (Integer v : new Integer[] { 1, null })
->
+    {
->
+        final CountingRejectingExecutor e = new CountingRejectingExecutor();
->
->
+        final CompletableFuture<Integer> complete = CompletableFuture.completedFuture(v);
->
+        final CompletableFuture<Integer> incomplete = new CompletableFuture<>();
->
->
+        List<CompletableFuture<?>> futures = new ArrayList<>();
->
->
+        List<CompletableFuture<Integer>> srcs = new ArrayList<>();
->
+        srcs.add(complete);
->
+        srcs.add(incomplete);
->
->
+        List<CompletableFuture<?>> fs = new ArrayList<>();
->
+        fs.add(incomplete.thenRunAsync(() -> {}, e));
->
+        fs.add(incomplete.thenAcceptAsync(z -> {}, e));
->
+        fs.add(incomplete.thenApplyAsync(z -> z, e));
->
->
+        fs.add(incomplete.thenCombineAsync(incomplete, (x, y) -> x, e));
->
+        fs.add(incomplete.thenAcceptBothAsync(incomplete, (x, y) -> {}, e));
->
+        fs.add(incomplete.runAfterBothAsync(incomplete, () -> {}, e));
->
->
+        fs.add(incomplete.applyToEitherAsync(incomplete, z -> z, e));
->
+        fs.add(incomplete.acceptEitherAsync(incomplete, z -> {}, e));
->
+        fs.add(incomplete.runAfterEitherAsync(incomplete, () -> {}, e));
->
->
+        fs.add(incomplete.thenComposeAsync(z -> null, e));
->
+        fs.add(incomplete.whenCompleteAsync((z, t) -> {}, e));
->
+        fs.add(incomplete.handleAsync((z, t) -> null, e));
->
->
+        fs.add(complete.thenCombineAsync(incomplete, (x, y) -> x, e));
->
+        fs.add(incomplete.thenCombineAsync(complete, (x, y) -> x, e));
->
->
+        fs.add(complete.thenAcceptBothAsync(incomplete, (x, y) -> {}, e));
->
+        fs.add(incomplete.thenAcceptBothAsync(complete, (x, y) -> {}, e));
->
->
+        fs.add(complete.runAfterBothAsync(incomplete, () -> {}, e));
->
+        fs.add(incomplete.runAfterBothAsync(complete, () -> {}, e));
->
->
+        for (CompletableFuture<?> future : fs)
->
+            checkIncomplete(future);
->
->
+        for (CompletableFuture<?> future : fs)
->
+            future.complete(null);
->
->
+        incomplete.complete(v);
->
->
+        for (CompletableFuture<?> future : fs)
->
+            checkCompletedNormally(future, null);
->
->
+        assertEquals(0, e.count.get());
->
+    }}
->
->
+    /**
->
+     * toCompletableFuture returns this CompletableFuture.
->
+     */
->
+    public void testToCompletableFuture() {
->
+        CompletableFuture<Integer> f = new CompletableFuture<>();
->
+        assertSame(f, f.toCompletableFuture());
->
+    }
->
->
+    // jdk9
-<
+        f = new CompletableFuture<String>();
-<
+        assertTrue(f.toString().contains("[Not completed]"));
->
+    /**
->
+     * newIncompleteFuture returns an incomplete CompletableFuture
->
+     */
->
+    public void testNewIncompleteFuture() {
->
+        for (Integer v1 : new Integer[] { 1, null })
->
+    {
->
+        CompletableFuture<Integer> f = new CompletableFuture<>();
->
+        CompletableFuture<Integer> g = f.newIncompleteFuture();
->
+        checkIncomplete(f);
->
+        checkIncomplete(g);
->
+        f.complete(v1);
->
+        checkCompletedNormally(f, v1);
->
+        checkIncomplete(g);
->
+        g.complete(v1);
->
+        checkCompletedNormally(g, v1);
->
+        assertSame(g.getClass(), CompletableFuture.class);
->
+    }}
-<
+        f.complete("foo");
-<
+        assertTrue(f.toString().contains("[Completed normally]"));
->
+    /**
->
+     * completedStage returns a completed CompletionStage
->
+     */
->
+    public void testCompletedStage() {
->
+        AtomicInteger x = new AtomicInteger(0);
->
+        AtomicReference<Throwable> r = new AtomicReference<>();
->
+        CompletionStage<Integer> f = CompletableFuture.completedStage(1);
->
+        f.whenComplete((v, e) -> {if (e != null) r.set(e); else x.set(v);});
->
+        assertEquals(x.get(), 1);
->
+        assertNull(r.get());
->
+    }
->
->
+    /**
->
+     * defaultExecutor by default returns the commonPool if
->
+     * it supports more than one thread.
->
+     */
->
+    public void testDefaultExecutor() {
->
+        CompletableFuture<Integer> f = new CompletableFuture<>();
->
+        Executor e = f.defaultExecutor();
->
+        Executor c = ForkJoinPool.commonPool();
->
+        if (ForkJoinPool.getCommonPoolParallelism() > 1)
->
+            assertSame(e, c);
->
+        else
->
+            assertNotSame(e, c);
->
+    }
-<
+        f = new CompletableFuture<String>();
-<
+        f.completeExceptionally(new IndexOutOfBoundsException());
-<
+        assertTrue(f.toString().contains("[Completed exceptionally]"));
->
+    /**
->
+     * failedFuture returns a CompletableFuture completed
->
+     * exceptionally with the given Exception
->
+     */
->
+    public void testFailedFuture() {
->
+        CFException ex = new CFException();
->
+        CompletableFuture<Integer> f = CompletableFuture.failedFuture(ex);
->
+        checkCompletedExceptionally(f, ex);
-+
-+
+    /**
-+
+     * failedFuture(null) throws NPE
-+
+     */
-+
+    public void testFailedFuture_null() {
-+
+        try {
-+
+            CompletableFuture<Integer> f = CompletableFuture.failedFuture(null);
-+
+            shouldThrow();
-+
+        } catch (NullPointerException success) {}
-+
+    }
-+
-+
+    /**
-+
+     * copy returns a CompletableFuture that is completed normally,
-+
+     * with the same value, when source is.
-+
+     */
-+
+    public void testCopy_normalCompletion() {
-+
+        for (boolean createIncomplete : new boolean[] { true, false })
-+
+        for (Integer v1 : new Integer[] { 1, null })
-+
+    {
-+
+        CompletableFuture<Integer> f = new CompletableFuture<>();
-+
+        if (!createIncomplete) assertTrue(f.complete(v1));
-+
+        CompletableFuture<Integer> g = f.copy();
-+
+        if (createIncomplete) {
-+
+            checkIncomplete(f);
-+
+            checkIncomplete(g);
-+
+            assertTrue(f.complete(v1));
-+
+        }
-+
+        checkCompletedNormally(f, v1);
-+
+        checkCompletedNormally(g, v1);
-+
+    }}
-+
-+
+    /**
-+
+     * copy returns a CompletableFuture that is completed exceptionally
-+
+     * when source is.
-+
+     */
-+
+    public void testCopy_exceptionalCompletion() {
-+
+        for (boolean createIncomplete : new boolean[] { true, false })
-+
+    {
-+
+        CFException ex = new CFException();
-+
+        CompletableFuture<Integer> f = new CompletableFuture<>();
-+
+        if (!createIncomplete) f.completeExceptionally(ex);
-+
+        CompletableFuture<Integer> g = f.copy();
-+
+        if (createIncomplete) {
-+
+            checkIncomplete(f);
-+
+            checkIncomplete(g);
-+
+            f.completeExceptionally(ex);
-+
+        }
-+
+        checkCompletedExceptionally(f, ex);
-+
+        checkCompletedWithWrappedException(g, ex);
-+
+    }}
-+
-+
+    /**
-+
+     * Completion of a copy does not complete its source.
-+
+     */
-+
+    public void testCopy_oneWayPropagation() {
-+
+        CompletableFuture<Integer> f = new CompletableFuture<>();
-+
+        assertTrue(f.copy().complete(1));
-+
+        assertTrue(f.copy().complete(null));
-+
+        assertTrue(f.copy().cancel(true));
-+
+        assertTrue(f.copy().cancel(false));
-+
+        assertTrue(f.copy().completeExceptionally(new CFException()));
-+
+        checkIncomplete(f);
-+
+    }
-+
-+
+    /**
-+
+     * minimalCompletionStage returns a CompletableFuture that is
-+
+     * completed normally, with the same value, when source is.
-+
+     */
-+
+    public void testMinimalCompletionStage() {
-+
+        CompletableFuture<Integer> f = new CompletableFuture<>();
-+
+        CompletionStage<Integer> g = f.minimalCompletionStage();
-+
+        AtomicInteger x = new AtomicInteger(0);
-+
+        AtomicReference<Throwable> r = new AtomicReference<>();
-+
+        checkIncomplete(f);
-+
+        g.whenComplete((v, e) -> {if (e != null) r.set(e); else x.set(v);});
-+
+        f.complete(1);
-+
+        checkCompletedNormally(f, 1);
-+
+        assertEquals(x.get(), 1);
-+
+        assertNull(r.get());
-+
+    }
-+
-+
+    /**
-+
+     * minimalCompletionStage returns a CompletableFuture that is
-+
+     * completed exceptionally when source is.
-+
+     */
-+
+    public void testMinimalCompletionStage2() {
-+
+        CompletableFuture<Integer> f = new CompletableFuture<>();
-+
+        CompletionStage<Integer> g = f.minimalCompletionStage();
-+
+        AtomicInteger x = new AtomicInteger(0);
-+
+        AtomicReference<Throwable> r = new AtomicReference<>();
-+
+        g.whenComplete((v, e) -> {if (e != null) r.set(e); else x.set(v);});
-+
+        checkIncomplete(f);
-+
+        CFException ex = new CFException();
-+
+        f.completeExceptionally(ex);
-+
+        checkCompletedExceptionally(f, ex);
-+
+        assertEquals(x.get(), 0);
-+
+        assertEquals(r.get().getCause(), ex);
-+
+    }
-+
-+
+    /**
-+
+     * failedStage returns a CompletionStage completed
-+
+     * exceptionally with the given Exception
-+
+     */
-+
+    public void testFailedStage() {
-+
+        CFException ex = new CFException();
-+
+        CompletionStage<Integer> f = CompletableFuture.failedStage(ex);
-+
+        AtomicInteger x = new AtomicInteger(0);
-+
+        AtomicReference<Throwable> r = new AtomicReference<>();
-+
+        f.whenComplete((v, e) -> {if (e != null) r.set(e); else x.set(v);});
-+
+        assertEquals(x.get(), 0);
-+
+        assertEquals(r.get(), ex);
-+
+    }
-+
-+
+    /**
-+
+     * completeAsync completes with value of given supplier
-+
+     */
-+
+    public void testCompleteAsync() {
-+
+        for (Integer v1 : new Integer[] { 1, null })
-+
+    {
-+
+        CompletableFuture<Integer> f = new CompletableFuture<>();
-+
+        f.completeAsync(() -> v1);
-+
+        f.join();
-+
+        checkCompletedNormally(f, v1);
-+
+    }}
-+
-+
+    /**
-+
+     * completeAsync completes exceptionally if given supplier throws
-+
+     */
-+
+    public void testCompleteAsync2() {
-+
+        CompletableFuture<Integer> f = new CompletableFuture<>();
-+
+        CFException ex = new CFException();
-+
+        f.completeAsync(() -> { throw ex; });
-+
+        try {
-+
+            f.join();
-+
+            shouldThrow();
-+
+        } catch (CompletionException success) {}
-+
+        checkCompletedWithWrappedException(f, ex);
-+
+    }
-+
-+
+    /**
-+
+     * completeAsync with given executor completes with value of given supplier
-+
+     */
-+
+    public void testCompleteAsync3() {
-+
+        for (Integer v1 : new Integer[] { 1, null })
-+
+    {
-+
+        CompletableFuture<Integer> f = new CompletableFuture<>();
-+
+        ThreadExecutor executor = new ThreadExecutor();
-+
+        f.completeAsync(() -> v1, executor);
-+
+        assertSame(v1, f.join());
-+
+        checkCompletedNormally(f, v1);
-+
+        assertEquals(1, executor.count.get());
-+
+    }}
-+
-+
+    /**
-+
+     * completeAsync with given executor completes exceptionally if
-+
+     * given supplier throws
-+
+     */
-+
+    public void testCompleteAsync4() {
-+
+        CompletableFuture<Integer> f = new CompletableFuture<>();
-+
+        CFException ex = new CFException();
-+
+        ThreadExecutor executor = new ThreadExecutor();
-+
+        f.completeAsync(() -> { throw ex; }, executor);
-+
+        try {
-+
+            f.join();
-+
+            shouldThrow();
-+
+        } catch (CompletionException success) {}
-+
+        checkCompletedWithWrappedException(f, ex);
-+
+        assertEquals(1, executor.count.get());
-+
+    }
-+
-+
+    /**
-+
+     * orTimeout completes with TimeoutException if not complete
-+
+     */
-+
+    public void testOrTimeout_timesOut() {
-+
+        long timeoutMillis = timeoutMillis();
-+
+        CompletableFuture<Integer> f = new CompletableFuture<>();
-+
+        long startTime = System.nanoTime();
-+
+        assertSame(f, f.orTimeout(timeoutMillis, MILLISECONDS));
-+
+        checkCompletedWithTimeoutException(f);
-+
+        assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
-+
+    }
-+
-+
+    /**
-+
+     * orTimeout completes normally if completed before timeout
-+
+     */
-+
+    public void testOrTimeout_completed() {
-+
+        for (Integer v1 : new Integer[] { 1, null })
-+
+    {
-+
+        CompletableFuture<Integer> f = new CompletableFuture<>();
-+
+        CompletableFuture<Integer> g = new CompletableFuture<>();
-+
+        long startTime = System.nanoTime();
-+
+        f.complete(v1);
-+
+        assertSame(f, f.orTimeout(LONG_DELAY_MS, MILLISECONDS));
-+
+        assertSame(g, g.orTimeout(LONG_DELAY_MS, MILLISECONDS));
-+
+        g.complete(v1);
-+
+        checkCompletedNormally(f, v1);
-+
+        checkCompletedNormally(g, v1);
-+
+        assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS / 2);
-+
+    }}
-+
-+
+    /**
-+
+     * completeOnTimeout completes with given value if not complete
-+
+     */
-+
+    public void testCompleteOnTimeout_timesOut() {
-+
+        testInParallel(() -> testCompleteOnTimeout_timesOut(42),
-+
+                       () -> testCompleteOnTimeout_timesOut(null));
-+
+    }
-+
-+
+    /**
-+
+     * completeOnTimeout completes with given value if not complete
-+
+     */
-+
+    public void testCompleteOnTimeout_timesOut(Integer v) {
-+
+        long timeoutMillis = timeoutMillis();
-+
+        CompletableFuture<Integer> f = new CompletableFuture<>();
-+
+        long startTime = System.nanoTime();
-+
+        assertSame(f, f.completeOnTimeout(v, timeoutMillis, MILLISECONDS));
-+
+        assertSame(v, f.join());
-+
+        assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
-+
+        f.complete(99);         // should have no effect
-+
+        checkCompletedNormally(f, v);
-+
+    }
-+
-+
+    /**
-+
+     * completeOnTimeout has no effect if completed within timeout
-+
+     */
-+
+    public void testCompleteOnTimeout_completed() {
-+
+        for (Integer v1 : new Integer[] { 1, null })
-+
+    {
-+
+        CompletableFuture<Integer> f = new CompletableFuture<>();
-+
+        CompletableFuture<Integer> g = new CompletableFuture<>();
-+
+        long startTime = System.nanoTime();
-+
+        f.complete(v1);
-+
+        assertSame(f, f.completeOnTimeout(-1, LONG_DELAY_MS, MILLISECONDS));
-+
+        assertSame(g, g.completeOnTimeout(-1, LONG_DELAY_MS, MILLISECONDS));
-+
+        g.complete(v1);
-+
+        checkCompletedNormally(f, v1);
-+
+        checkCompletedNormally(g, v1);
-+
+        assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS / 2);
-+
+    }}
-+
-+
+    /**
-+
+     * delayedExecutor returns an executor that delays submission
-+
+     */
-+
+    public void testDelayedExecutor() {
-+
+        testInParallel(() -> testDelayedExecutor(null, null),
-+
+                       () -> testDelayedExecutor(null, 1),
-+
+                       () -> testDelayedExecutor(new ThreadExecutor(), 1),
-+
+                       () -> testDelayedExecutor(new ThreadExecutor(), 1));
-+
+    }
-+
-+
+    public void testDelayedExecutor(Executor executor, Integer v) throws Exception {
-+
+        long timeoutMillis = timeoutMillis();
-+
+        // Use an "unreasonably long" long timeout to catch lingering threads
-+
+        long longTimeoutMillis = 1000 * 60 * 60 * 24;
-+
+        final Executor delayer, longDelayer;
-+
+        if (executor == null) {
-+
+            delayer = CompletableFuture.delayedExecutor(timeoutMillis, MILLISECONDS);
-+
+            longDelayer = CompletableFuture.delayedExecutor(longTimeoutMillis, MILLISECONDS);
-+
+        } else {
-+
+            delayer = CompletableFuture.delayedExecutor(timeoutMillis, MILLISECONDS, executor);
-+
+            longDelayer = CompletableFuture.delayedExecutor(longTimeoutMillis, MILLISECONDS, executor);
-+
+        }
-+
+        long startTime = System.nanoTime();
-+
+        CompletableFuture<Integer> f =
-+
+            CompletableFuture.supplyAsync(() -> v, delayer);
-+
+        CompletableFuture<Integer> g =
-+
+            CompletableFuture.supplyAsync(() -> v, longDelayer);
-+
-+
+        assertNull(g.getNow(null));
-+
-+
+        assertSame(v, f.get(LONG_DELAY_MS, MILLISECONDS));
-+
+        long millisElapsed = millisElapsedSince(startTime);
-+
+        assertTrue(millisElapsed >= timeoutMillis);
-+
+        assertTrue(millisElapsed < LONG_DELAY_MS / 2);
-+
-+
+        checkCompletedNormally(f, v);
-+
-+
+        checkIncomplete(g);
-+
+        assertTrue(g.cancel(true));
-+
+    }
-+
-+
+    //--- tests of implementation details; not part of official tck ---
-+
-+
+    Object resultOf(CompletableFuture<?> f) {
-+
+        SecurityManager sm = System.getSecurityManager();
-+
+        if (sm != null) {
-+
+            try {
-+
+                System.setSecurityManager(null);
-+
+            } catch (SecurityException giveUp) {
-+
+                return "Reflection not available";
-+
+            }
-+
+        }
-+
-+
+        try {
-+
+            java.lang.reflect.Field resultField
-+
+                = CompletableFuture.class.getDeclaredField("result");
-+
+            resultField.setAccessible(true);
-+
+            return resultField.get(f);
-+
+        } catch (Throwable t) {
-+
+            throw new AssertionError(t);
-+
+        } finally {
-+
+            if (sm != null) System.setSecurityManager(sm);
-+
+        }
-+
+    }
-+
-+
+    public void testExceptionPropagationReusesResultObject() {
-+
+        if (!testImplementationDetails) return;
-+
+        for (ExecutionMode m : ExecutionMode.values())
-+
+    {
-+
+        final CFException ex = new CFException();
-+
+        final CompletableFuture<Integer> v42 = CompletableFuture.completedFuture(42);
-+
+        final CompletableFuture<Integer> incomplete = new CompletableFuture<>();
-+
-+
+        final Runnable noopRunnable = new Noop(m);
-+
+        final Consumer<Integer> noopConsumer = new NoopConsumer(m);
-+
+        final Function<Integer, Integer> incFunction = new IncFunction(m);
-+
-+
+        List<Function<CompletableFuture<Integer>, CompletableFuture<?>>> funs
-+
+            = new ArrayList<>();
-+
-+
+        funs.add(y -> m.thenRun(y, noopRunnable));
-+
+        funs.add(y -> m.thenAccept(y, noopConsumer));
-+
+        funs.add(y -> m.thenApply(y, incFunction));
-+
-+
+        funs.add(y -> m.runAfterEither(y, incomplete, noopRunnable));
-+
+        funs.add(y -> m.acceptEither(y, incomplete, noopConsumer));
-+
+        funs.add(y -> m.applyToEither(y, incomplete, incFunction));
-+
-+
+        funs.add(y -> m.runAfterBoth(y, v42, noopRunnable));
-+
+        funs.add(y -> m.runAfterBoth(v42, y, noopRunnable));
-+
+        funs.add(y -> m.thenAcceptBoth(y, v42, new SubtractAction(m)));
-+
+        funs.add(y -> m.thenAcceptBoth(v42, y, new SubtractAction(m)));
-+
+        funs.add(y -> m.thenCombine(y, v42, new SubtractFunction(m)));
-+
+        funs.add(y -> m.thenCombine(v42, y, new SubtractFunction(m)));
-+
-+
+        funs.add(y -> m.whenComplete(y, (Integer r, Throwable t) -> {}));
-+
-+
+        funs.add(y -> m.thenCompose(y, new CompletableFutureInc(m)));
-+
-+
+        funs.add(y -> CompletableFuture.allOf(y));
-+
+        funs.add(y -> CompletableFuture.allOf(y, v42));
-+
+        funs.add(y -> CompletableFuture.allOf(v42, y));
-+
+        funs.add(y -> CompletableFuture.anyOf(y));
-+
+        funs.add(y -> CompletableFuture.anyOf(y, incomplete));
-+
+        funs.add(y -> CompletableFuture.anyOf(incomplete, y));
-+
-+
+        for (Function<CompletableFuture<Integer>, CompletableFuture<?>>
-+
+                 fun : funs) {
-+
+            CompletableFuture<Integer> f = new CompletableFuture<>();
-+
+            f.completeExceptionally(ex);
-+
+            CompletableFuture<Integer> src = m.thenApply(f, incFunction);
-+
+            checkCompletedWithWrappedException(src, ex);
-+
+            CompletableFuture<?> dep = fun.apply(src);
-+
+            checkCompletedWithWrappedException(dep, ex);
-+
+            assertSame(resultOf(src), resultOf(dep));
-+
+        }
-+
-+
+        for (Function<CompletableFuture<Integer>, CompletableFuture<?>>
-+
+                 fun : funs) {
-+
+            CompletableFuture<Integer> f = new CompletableFuture<>();
-+
+            CompletableFuture<Integer> src = m.thenApply(f, incFunction);
-+
+            CompletableFuture<?> dep = fun.apply(src);
-+
+            f.completeExceptionally(ex);
-+
+            checkCompletedWithWrappedException(src, ex);
-+
+            checkCompletedWithWrappedException(dep, ex);
-+
+            assertSame(resultOf(src), resultOf(dep));
-+
+        }
-+
-+
+        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
-+
+        for (Function<CompletableFuture<Integer>, CompletableFuture<?>>
-+
+                 fun : funs) {
-+
+            CompletableFuture<Integer> f = new CompletableFuture<>();
-+
+            f.cancel(mayInterruptIfRunning);
-+
+            checkCancelled(f);
-+
+            CompletableFuture<Integer> src = m.thenApply(f, incFunction);
-+
+            checkCompletedWithWrappedCancellationException(src);
-+
+            CompletableFuture<?> dep = fun.apply(src);
-+
+            checkCompletedWithWrappedCancellationException(dep);
-+
+            assertSame(resultOf(src), resultOf(dep));
-+
+        }
-+
-+
+        for (boolean mayInterruptIfRunning : new boolean[] { true, false })
-+
+        for (Function<CompletableFuture<Integer>, CompletableFuture<?>>
-+
+                 fun : funs) {
-+
+            CompletableFuture<Integer> f = new CompletableFuture<>();
-+
+            CompletableFuture<Integer> src = m.thenApply(f, incFunction);
-+
+            CompletableFuture<?> dep = fun.apply(src);
-+
+            f.cancel(mayInterruptIfRunning);
-+
+            checkCancelled(f);
-+
+            checkCompletedWithWrappedCancellationException(src);
-+
+            checkCompletedWithWrappedCancellationException(dep);
-+
+            assertSame(resultOf(src), resultOf(dep));
-+
+        }
-+
+    }}
-+
-+
+    /**
-+
+     * Minimal completion stages throw UOE for most non-CompletionStage methods
-+
+     */
-+
+    public void testMinimalCompletionStage_minimality() {
-+
+        if (!testImplementationDetails) return;
-+
+        Function<Method, String> toSignature =
-+
+            method -> method.getName() + Arrays.toString(method.getParameterTypes());
-+
+        Predicate<Method> isNotStatic =
-+
+            method -> (method.getModifiers() & Modifier.STATIC) == 0;
-+
+        List<Method> minimalMethods =
-+
+            Stream.of(Object.class, CompletionStage.class)
-+
+            .flatMap(klazz -> Stream.of(klazz.getMethods()))
-+
+            .filter(isNotStatic)
-+
+            .collect(Collectors.toList());
-+
+        // Methods from CompletableFuture permitted NOT to throw UOE
-+
+        String[] signatureWhitelist = {
-+
+            "newIncompleteFuture[]",
-+
+            "defaultExecutor[]",
-+
+            "minimalCompletionStage[]",
-+
+            "copy[]",
-+
+        };
-+
+        Set<String> permittedMethodSignatures =
-+
+            Stream.concat(minimalMethods.stream().map(toSignature),
-+
+                          Stream.of(signatureWhitelist))
-+
+            .collect(Collectors.toSet());
-+
+        List<Method> allMethods = Stream.of(CompletableFuture.class.getMethods())
-+
+            .filter(isNotStatic)
-+
+            .filter(method -> !permittedMethodSignatures.contains(toSignature.apply(method)))
-+
+            .collect(Collectors.toList());
-+
-+
+        List<CompletionStage<Integer>> stages = new ArrayList<>();
-+
+        CompletionStage<Integer> min =
-+
+            new CompletableFuture<Integer>().minimalCompletionStage();
-+
+        stages.add(min);
-+
+        stages.add(min.thenApply(x -> x));
-+
+        stages.add(CompletableFuture.completedStage(1));
-+
+        stages.add(CompletableFuture.failedStage(new CFException()));
-+
-+
+        List<Method> bugs = new ArrayList<>();
-+
+        for (Method method : allMethods) {
-+
+            Class<?>[] parameterTypes = method.getParameterTypes();
-+
+            Object[] args = new Object[parameterTypes.length];
-+
+            // Manufacture boxed primitives for primitive params
-+
+            for (int i = 0; i < args.length; i++) {
-+
+                Class<?> type = parameterTypes[i];
-+
+                if (parameterTypes[i] == boolean.class)
-+
+                    args[i] = false;
-+
+                else if (parameterTypes[i] == int.class)
-+
+                    args[i] = 0;
-+
+                else if (parameterTypes[i] == long.class)
-+
+                    args[i] = 0L;
-+
+            }
-+
+            for (CompletionStage<Integer> stage : stages) {
-+
+                try {
-+
+                    method.invoke(stage, args);
-+
+                    bugs.add(method);
-+
+                }
-+
+                catch (java.lang.reflect.InvocationTargetException expected) {
-+
+                    if (! (expected.getCause() instanceof UnsupportedOperationException)) {
-+
+                        bugs.add(method);
-+
+                        // expected.getCause().printStackTrace();
-+
+                    }
-+
+                }
-+
+                catch (ReflectiveOperationException bad) { throw new Error(bad); }
-+
+            }
-+
+        }
-+
+        if (!bugs.isEmpty())
-+
+            throw new Error("Methods did not throw UOE: " + bugs);
-+
+    }
-+
-+
+    /**
-+
+     * minimalStage.toCompletableFuture() returns a CompletableFuture that
-+
+     * is completed normally, with the same value, when source is.
-+
+     */
-+
+    public void testMinimalCompletionStage_toCompletableFuture_normalCompletion() {
-+
+        for (boolean createIncomplete : new boolean[] { true, false })
-+
+        for (Integer v1 : new Integer[] { 1, null })
-+
+    {
-+
+        CompletableFuture<Integer> f = new CompletableFuture<>();
-+
+        CompletionStage<Integer> minimal = f.minimalCompletionStage();
-+
+        if (!createIncomplete) assertTrue(f.complete(v1));
-+
+        CompletableFuture<Integer> g = minimal.toCompletableFuture();
-+
+        if (createIncomplete) {
-+
+            checkIncomplete(f);
-+
+            checkIncomplete(g);
-+
+            assertTrue(f.complete(v1));
-+
+        }
-+
+        checkCompletedNormally(f, v1);
-+
+        checkCompletedNormally(g, v1);
-+
+    }}
-+
-+
+    /**
-+
+     * minimalStage.toCompletableFuture() returns a CompletableFuture that
-+
+     * is completed exceptionally when source is.
-+
+     */
-+
+    public void testMinimalCompletionStage_toCompletableFuture_exceptionalCompletion() {
-+
+        for (boolean createIncomplete : new boolean[] { true, false })
-+
+    {
-+
+        CFException ex = new CFException();
-+
+        CompletableFuture<Integer> f = new CompletableFuture<>();
-+
+        CompletionStage<Integer> minimal = f.minimalCompletionStage();
-+
+        if (!createIncomplete) f.completeExceptionally(ex);
-+
+        CompletableFuture<Integer> g = minimal.toCompletableFuture();
-+
+        if (createIncomplete) {
-+
+            checkIncomplete(f);
-+
+            checkIncomplete(g);
-+
+            f.completeExceptionally(ex);
-+
+        }
-+
+        checkCompletedExceptionally(f, ex);
-+
+        checkCompletedWithWrappedException(g, ex);
-+
+    }}
-+
-+
+    /**
-+
+     * minimalStage.toCompletableFuture() gives mutable CompletableFuture
-+
+     */
-+
+    public void testMinimalCompletionStage_toCompletableFuture_mutable() {
-+
+        for (Integer v1 : new Integer[] { 1, null })
-+
+    {
-+
+        CompletableFuture<Integer> f = new CompletableFuture<>();
-+
+        CompletionStage minimal = f.minimalCompletionStage();
-+
+        CompletableFuture<Integer> g = minimal.toCompletableFuture();
-+
+        assertTrue(g.complete(v1));
-+
+        checkCompletedNormally(g, v1);
-+
+        checkIncomplete(f);
-+
+        checkIncomplete(minimal.toCompletableFuture());
-+
+    }}
-+
-+
+    /**
-+
+     * minimalStage.toCompletableFuture().join() awaits completion
-+
+     */
-+
+    public void testMinimalCompletionStage_toCompletableFuture_join() throws Exception {
-+
+        for (boolean createIncomplete : new boolean[] { true, false })
-+
+        for (Integer v1 : new Integer[] { 1, null })
-+
+    {
-+
+        CompletableFuture<Integer> f = new CompletableFuture<>();
-+
+        if (!createIncomplete) assertTrue(f.complete(v1));
-+
+        CompletionStage<Integer> minimal = f.minimalCompletionStage();
-+
+        if (createIncomplete) assertTrue(f.complete(v1));
-+
+        assertEquals(v1, minimal.toCompletableFuture().join());
-+
+        assertEquals(v1, minimal.toCompletableFuture().get());
-+
+        checkCompletedNormally(minimal.toCompletableFuture(), v1);
-+
+    }}
-+
-+
+    /**
-+
+     * Completion of a toCompletableFuture copy of a minimal stage
-+
+     * does not complete its source.
-+
+     */
-+
+    public void testMinimalCompletionStage_toCompletableFuture_oneWayPropagation() {
-+
+        CompletableFuture<Integer> f = new CompletableFuture<>();
-+
+        CompletionStage<Integer> g = f.minimalCompletionStage();
-+
+        assertTrue(g.toCompletableFuture().complete(1));
-+
+        assertTrue(g.toCompletableFuture().complete(null));
-+
+        assertTrue(g.toCompletableFuture().cancel(true));
-+
+        assertTrue(g.toCompletableFuture().cancel(false));
-+
+        assertTrue(g.toCompletableFuture().completeExceptionally(new CFException()));
-+
+        checkIncomplete(g.toCompletableFuture());
-+
+        f.complete(1);
-+
+        checkCompletedNormally(g.toCompletableFuture(), 1);
-+
+    }
-+
-+
+    /** Demo utility method for external reliable toCompletableFuture */
-+
+    static <T> CompletableFuture<T> toCompletableFuture(CompletionStage<T> stage) {
-+
+        CompletableFuture<T> f = new CompletableFuture<>();
-+
+        stage.handle((T t, Throwable ex) -> {
-+
+                         if (ex != null) f.completeExceptionally(ex);
-+
+                         else f.complete(t);
-+
+                         return null;
-+
+                     });
-+
+        return f;
-+
+    }
-+
-+
+    /** Demo utility method to join a CompletionStage */
-+
+    static <T> T join(CompletionStage<T> stage) {
-+
+        return toCompletableFuture(stage).join();
-+
+    }
-+
-+
+    /**
-+
+     * Joining a minimal stage "by hand" works
-+
+     */
-+
+    public void testMinimalCompletionStage_join_by_hand() {
-+
+        for (boolean createIncomplete : new boolean[] { true, false })
-+
+        for (Integer v1 : new Integer[] { 1, null })
-+
+    {
-+
+        CompletableFuture<Integer> f = new CompletableFuture<>();
-+
+        CompletionStage<Integer> minimal = f.minimalCompletionStage();
-+
+        CompletableFuture<Integer> g = new CompletableFuture<>();
-+
+        if (!createIncomplete) assertTrue(f.complete(v1));
-+
+        minimal.thenAccept(x -> g.complete(x));
-+
+        if (createIncomplete) assertTrue(f.complete(v1));
-+
+        g.join();
-+
+        checkCompletedNormally(g, v1);
-+
+        checkCompletedNormally(f, v1);
-+
+        assertEquals(v1, join(minimal));
-+
+    }}
-+
-+
+    static class Monad {
-+
+        static class ZeroException extends RuntimeException {
-+
+            public ZeroException() { super("monadic zero"); }
-+
+        }
-+
+        // "return", "unit"
-+
+        static <T> CompletableFuture<T> unit(T value) {
-+
+            return completedFuture(value);
-+
+        }
-+
+        // monadic zero ?
-+
+        static <T> CompletableFuture<T> zero() {
-+
+            return failedFuture(new ZeroException());
-+
+        }
-+
+        // >=>
-+
+        static <T,U,V> Function<T, CompletableFuture<V>> compose
-+
+            (Function<T, CompletableFuture<U>> f,
-+
+             Function<U, CompletableFuture<V>> g) {
-+
+            return x -> f.apply(x).thenCompose(g);
-+
+        }
-+
-+
+        static void assertZero(CompletableFuture<?> f) {
-+
+            try {
-+
+                f.getNow(null);
-+
+                throw new AssertionError("should throw");
-+
+            } catch (CompletionException success) {
-+
+                assertTrue(success.getCause() instanceof ZeroException);
-+
+            }
-+
+        }
-+
-+
+        static <T> void assertFutureEquals(CompletableFuture<T> f,
-+
+                                           CompletableFuture<T> g) {
-+
+            T fval = null, gval = null;
-+
+            Throwable fex = null, gex = null;
-+
-+
+            try { fval = f.get(); }
-+
+            catch (ExecutionException ex) { fex = ex.getCause(); }
-+
+            catch (Throwable ex) { fex = ex; }
-+
-+
+            try { gval = g.get(); }
-+
+            catch (ExecutionException ex) { gex = ex.getCause(); }
-+
+            catch (Throwable ex) { gex = ex; }
-+
-+
+            if (fex != null || gex != null)
-+
+                assertSame(fex.getClass(), gex.getClass());
-+
+            else
-+
+                assertEquals(fval, gval);
-+
+        }
-+
-+
+        static class PlusFuture<T> extends CompletableFuture<T> {
-+
+            AtomicReference<Throwable> firstFailure = new AtomicReference<>(null);
-+
+        }
-+
-+
+        /** Implements "monadic plus". */
-+
+        static <T> CompletableFuture<T> plus(CompletableFuture<? extends T> f,
-+
+                                             CompletableFuture<? extends T> g) {
-+
+            PlusFuture<T> plus = new PlusFuture<T>();
-+
+            BiConsumer<T, Throwable> action = (T result, Throwable ex) -> {
-+
+                try {
-+
+                    if (ex == null) {
-+
+                        if (plus.complete(result))
-+
+                            if (plus.firstFailure.get() != null)
-+
+                                plus.firstFailure.set(null);
-+
+                    }
-+
+                    else if (plus.firstFailure.compareAndSet(null, ex)) {
-+
+                        if (plus.isDone())
-+
+                            plus.firstFailure.set(null);
-+
+                    }
-+
+                    else {
-+
+                        // first failure has precedence
-+
+                        Throwable first = plus.firstFailure.getAndSet(null);
-+
-+
+                        // may fail with "Self-suppression not permitted"
-+
+                        try { first.addSuppressed(ex); }
-+
+                        catch (Exception ignored) {}
-+
-+
+                        plus.completeExceptionally(first);
-+
+                    }
-+
+                } catch (Throwable unexpected) {
-+
+                    plus.completeExceptionally(unexpected);
-+
+                }
-+
+            };
-+
+            f.whenComplete(action);
-+
+            g.whenComplete(action);
-+
+            return plus;
-+
+        }
-+
+    }
-+
-+
+    /**
-+
+     * CompletableFuture is an additive monad - sort of.
-+
+     * https://en.wikipedia.org/wiki/Monad_(functional_programming)#Additive_monads
-+
+     */
-+
+    public void testAdditiveMonad() throws Throwable {
-+
+        Function<Long, CompletableFuture<Long>> unit = Monad::unit;
-+
+        CompletableFuture<Long> zero = Monad.zero();
-+
-+
+        // Some mutually non-commutative functions
-+
+        Function<Long, CompletableFuture<Long>> triple
-+
+            = x -> Monad.unit(3 * x);
-+
+        Function<Long, CompletableFuture<Long>> inc
-+
+            = x -> Monad.unit(x + 1);
-+
-+
+        // unit is a right identity: m >>= unit === m
-+
+        Monad.assertFutureEquals(inc.apply(5L).thenCompose(unit),
-+
+                                 inc.apply(5L));
-+
+        // unit is a left identity: (unit x) >>= f === f x
-+
+        Monad.assertFutureEquals(unit.apply(5L).thenCompose(inc),
-+
+                                 inc.apply(5L));
-+
-+
+        // associativity: (m >>= f) >>= g === m >>= ( \x -> (f x >>= g) )
-+
+        Monad.assertFutureEquals(
-+
+            unit.apply(5L).thenCompose(inc).thenCompose(triple),
-+
+            unit.apply(5L).thenCompose(x -> inc.apply(x).thenCompose(triple)));
-+
-+
+        // The case for CompletableFuture as an additive monad is weaker...
-+
-+
+        // zero is a monadic zero
-+
+        Monad.assertZero(zero);
-+
-+
+        // left zero: zero >>= f === zero
-+
+        Monad.assertZero(zero.thenCompose(inc));
-+
+        // right zero: f >>= (\x -> zero) === zero
-+
+        Monad.assertZero(inc.apply(5L).thenCompose(x -> zero));
-+
-+
+        // f plus zero === f
-+
+        Monad.assertFutureEquals(Monad.unit(5L),
-+
+                                 Monad.plus(Monad.unit(5L), zero));
-+
+        // zero plus f === f
-+
+        Monad.assertFutureEquals(Monad.unit(5L),
-+
+                                 Monad.plus(zero, Monad.unit(5L)));
-+
+        // zero plus zero === zero
-+
+        Monad.assertZero(Monad.plus(zero, zero));
-+
+        {
-+
+            CompletableFuture<Long> f = Monad.plus(Monad.unit(5L),
-+
+                                                   Monad.unit(8L));
-+
+            // non-determinism
-+
+            assertTrue(f.get() == 5L || f.get() == 8L);
-+
+        }
-+
-+
+        CompletableFuture<Long> godot = new CompletableFuture<>();
-+
+        // f plus godot === f (doesn't wait for godot)
-+
+        Monad.assertFutureEquals(Monad.unit(5L),
-+
+                                 Monad.plus(Monad.unit(5L), godot));
-+
+        // godot plus f === f (doesn't wait for godot)
-+
+        Monad.assertFutureEquals(Monad.unit(5L),
-+
+                                 Monad.plus(godot, Monad.unit(5L)));
-+
+    }
-+
-+
+    /** Test long recursive chains of CompletableFutures with cascading completions */
-+
+    @SuppressWarnings("FutureReturnValueIgnored")
-+
+    public void testRecursiveChains() throws Throwable {
-+
+        for (ExecutionMode m : ExecutionMode.values())
-+
+        for (boolean addDeadEnds : new boolean[] { true, false })
-+
+    {
-+
+        final int val = 42;
-+
+        final int n = expensiveTests ? 1_000 : 2;
-+
+        CompletableFuture<Integer> head = new CompletableFuture<>();
-+
+        CompletableFuture<Integer> tail = head;
-+
+        for (int i = 0; i < n; i++) {
-+
+            if (addDeadEnds) m.thenApply(tail, v -> v + 1);
-+
+            tail = m.thenApply(tail, v -> v + 1);
-+
+            if (addDeadEnds) m.applyToEither(tail, tail, v -> v + 1);
-+
+            tail = m.applyToEither(tail, tail, v -> v + 1);
-+
+            if (addDeadEnds) m.thenCombine(tail, tail, (v, w) -> v + 1);
-+
+            tail = m.thenCombine(tail, tail, (v, w) -> v + 1);
-+
+        }
-+
+        head.complete(val);
-+
+        assertEquals(val + 3 * n, (int) tail.join());
-+
+    }}
-+
-+
+    /**
-+
+     * A single CompletableFuture with many dependents.
-+
+     * A demo of scalability - runtime is O(n).
-+
+     */
-+
+    @SuppressWarnings("FutureReturnValueIgnored")
-+
+    public void testManyDependents() throws Throwable {
-+
+        final int n = expensiveTests ? 1_000_000 : 10;
-+
+        final CompletableFuture<Void> head = new CompletableFuture<>();
-+
+        final CompletableFuture<Void> complete = CompletableFuture.completedFuture((Void)null);
-+
+        final AtomicInteger count = new AtomicInteger(0);
-+
+        for (int i = 0; i < n; i++) {
-+
+            head.thenRun(() -> count.getAndIncrement());
-+
+            head.thenAccept(x -> count.getAndIncrement());
-+
+            head.thenApply(x -> count.getAndIncrement());
-+
-+
+            head.runAfterBoth(complete, () -> count.getAndIncrement());
-+
+            head.thenAcceptBoth(complete, (x, y) -> count.getAndIncrement());
-+
+            head.thenCombine(complete, (x, y) -> count.getAndIncrement());
-+
+            complete.runAfterBoth(head, () -> count.getAndIncrement());
-+
+            complete.thenAcceptBoth(head, (x, y) -> count.getAndIncrement());
-+
+            complete.thenCombine(head, (x, y) -> count.getAndIncrement());
-+
-+
+            head.runAfterEither(new CompletableFuture<Void>(), () -> count.getAndIncrement());
-+
+            head.acceptEither(new CompletableFuture<Void>(), x -> count.getAndIncrement());
-+
+            head.applyToEither(new CompletableFuture<Void>(), x -> count.getAndIncrement());
-+
+            new CompletableFuture<Void>().runAfterEither(head, () -> count.getAndIncrement());
-+
+            new CompletableFuture<Void>().acceptEither(head, x -> count.getAndIncrement());
-+
+            new CompletableFuture<Void>().applyToEither(head, x -> count.getAndIncrement());
-+
+        }
-+
+        head.complete(null);
-+
+        assertEquals(5 * 3 * n, count.get());
-+
+    }
-+
-+
+    /** ant -Dvmoptions=-Xmx8m -Djsr166.expensiveTests=true -Djsr166.tckTestClass=CompletableFutureTest tck */
-+
+    @SuppressWarnings("FutureReturnValueIgnored")
-+
+    public void testCoCompletionGarbageRetention() throws Throwable {
-+
+        final int n = expensiveTests ? 1_000_000 : 10;
-+
+        final CompletableFuture<Integer> incomplete = new CompletableFuture<>();
-+
+        CompletableFuture<Integer> f;
-+
+        for (int i = 0; i < n; i++) {
-+
+            f = new CompletableFuture<>();
-+
+            f.runAfterEither(incomplete, () -> {});
-+
+            f.complete(null);
-+
-+
+            f = new CompletableFuture<>();
-+
+            f.acceptEither(incomplete, x -> {});
-+
+            f.complete(null);
-+
-+
+            f = new CompletableFuture<>();
-+
+            f.applyToEither(incomplete, x -> x);
-+
+            f.complete(null);
-+
-+
+            f = new CompletableFuture<>();
-+
+            CompletableFuture.anyOf(f, incomplete);
-+
+            f.complete(null);
-+
+        }
-+
-+
+        for (int i = 0; i < n; i++) {
-+
+            f = new CompletableFuture<>();
-+
+            incomplete.runAfterEither(f, () -> {});
-+
+            f.complete(null);
-+
-+
+            f = new CompletableFuture<>();
-+
+            incomplete.acceptEither(f, x -> {});
-+
+            f.complete(null);
-+
-+
+            f = new CompletableFuture<>();
-+
+            incomplete.applyToEither(f, x -> x);
-+
+            f.complete(null);
-+
-+
+            f = new CompletableFuture<>();
-+
+            CompletableFuture.anyOf(incomplete, f);
-+
+            f.complete(null);
-+
+        }
-+
+    }
-+
-+
+    /**
-+
+     * Reproduction recipe for:
-+
+     * 8160402: Garbage retention with CompletableFuture.anyOf
-+
+     * cvs update -D '2016-05-01' ./src/main/java/util/concurrent/CompletableFuture.java && ant -Dvmoptions=-Xmx8m -Djsr166.expensiveTests=true -Djsr166.tckTestClass=CompletableFutureTest -Djsr166.methodFilter=testAnyOfGarbageRetention tck; cvs update -A
-+
+     */
-+
+    public void testAnyOfGarbageRetention() throws Throwable {
-+
+        for (Integer v : new Integer[] { 1, null })
-+
+    {
-+
+        final int n = expensiveTests ? 100_000 : 10;
-+
+        CompletableFuture<Integer>[] fs
-+
+            = (CompletableFuture<Integer>[]) new CompletableFuture<?>[100];
-+
+        for (int i = 0; i < fs.length; i++)
-+
+            fs[i] = new CompletableFuture<>();
-+
+        fs[fs.length - 1].complete(v);
-+
+        for (int i = 0; i < n; i++)
-+
+            checkCompletedNormally(CompletableFuture.anyOf(fs), v);
-+
+    }}
-+
-+
+    /**
-+
+     * Checks for garbage retention with allOf.
-+
+     *
-+
+     * As of 2016-07, fails with OOME:
-+
+     * ant -Dvmoptions=-Xmx8m -Djsr166.expensiveTests=true -Djsr166.tckTestClass=CompletableFutureTest -Djsr166.methodFilter=testCancelledAllOfGarbageRetention tck
-+
+     */
-+
+    public void testCancelledAllOfGarbageRetention() throws Throwable {
-+
+        final int n = expensiveTests ? 100_000 : 10;
-+
+        CompletableFuture<Integer>[] fs
-+
+            = (CompletableFuture<Integer>[]) new CompletableFuture<?>[100];
-+
+        for (int i = 0; i < fs.length; i++)
-+
+            fs[i] = new CompletableFuture<>();
-+
+        for (int i = 0; i < n; i++)
-+
+            assertTrue(CompletableFuture.allOf(fs).cancel(false));
-+
+    }
-+
-+
+    /**
-+
+     * Checks for garbage retention when a dependent future is
-+
+     * cancelled and garbage-collected.
-+
+     * 8161600: Garbage retention when source CompletableFutures are never completed
-+
+     *
-+
+     * As of 2016-07, fails with OOME:
-+
+     * ant -Dvmoptions=-Xmx8m -Djsr166.expensiveTests=true -Djsr166.tckTestClass=CompletableFutureTest -Djsr166.methodFilter=testCancelledGarbageRetention tck
-+
+     */
-+
+    public void testCancelledGarbageRetention() throws Throwable {
-+
+        final int n = expensiveTests ? 100_000 : 10;
-+
+        CompletableFuture<Integer> neverCompleted = new CompletableFuture<>();
-+
+        for (int i = 0; i < n; i++)
-+
+            assertTrue(neverCompleted.thenRun(() -> {}).cancel(true));
-+
+    }
-+
-+
+    /**
-+
+     * Checks for garbage retention when MinimalStage.toCompletableFuture()
-+
+     * is invoked many times.
-+
+     * 8161600: Garbage retention when source CompletableFutures are never completed
-+
+     *
-+
+     * As of 2016-07, fails with OOME:
-+
+     * ant -Dvmoptions=-Xmx8m -Djsr166.expensiveTests=true -Djsr166.tckTestClass=CompletableFutureTest -Djsr166.methodFilter=testToCompletableFutureGarbageRetention tck
-+
+     */
-+
+    public void testToCompletableFutureGarbageRetention() throws Throwable {
-+
+        final int n = expensiveTests ? 900_000 : 10;
-+
+        CompletableFuture<Integer> neverCompleted = new CompletableFuture<>();
-+
+        CompletionStage minimal = neverCompleted.minimalCompletionStage();
-+
+        for (int i = 0; i < n; i++)
-+
+            assertTrue(minimal.toCompletableFuture().cancel(true));
-+
+    }
-+
-+
+//     static <U> U join(CompletionStage<U> stage) {
-+
+//         CompletableFuture<U> f = new CompletableFuture<>();
-+
+//         stage.whenComplete((v, ex) -> {
-+
+//             if (ex != null) f.completeExceptionally(ex); else f.complete(v);
-+
+//         });
-+
+//         return f.join();
-+
+//     }
-+
-+
+//     static <U> boolean isDone(CompletionStage<U> stage) {
-+
+//         CompletableFuture<U> f = new CompletableFuture<>();
-+
+//         stage.whenComplete((v, ex) -> {
-+
+//             if (ex != null) f.completeExceptionally(ex); else f.complete(v);
-+
+//         });
-+
+//         return f.isDone();
-+
+//     }
-+
-+
+//     static <U> U join2(CompletionStage<U> stage) {
-+
+//         return stage.toCompletableFuture().copy().join();
-+
+//     }
-+
-+
+//     static <U> boolean isDone2(CompletionStage<U> stage) {
-+
+//         return stage.toCompletableFuture().copy().isDone();
-+
+//     }
-+

Diff Legend

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+Removed lines
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+Added lines
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+Changed lines
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+Changed lines

Comparing jsr166/src/test/tck/CompletableFutureTest.java (file contents): Revision 1.2 by jsr166, Wed Feb 6 20:29:55 2013 UTC vs. Revision 1.195 by jsr166, Sun Jul 22 20:09:31 2018 UTC

Diff Legend

Comparing jsr166/src/test/tck/CompletableFutureTest.java (file contents):
Revision 1.2 by jsr166, Wed Feb 6 20:29:55 2013 UTC vs.
Revision 1.195 by jsr166, Sun Jul 22 20:09:31 2018 UTC