/** Implementation of {@link Futures#immediateFuture}. */
@GwtCompatible
@ElementTypesAreNonnullByDefault
// TODO(cpovirk): Make this final (but that may break Mockito spy calls).
class ImmediateFuture<V extends @Nullable Object> implements ListenableFuture<V> {
  static final ListenableFuture<?> NULL = new ImmediateFuture<@Nullable Object>(null);

        ClosingFuture.whenAllSucceed(
                ClosingFuture.eventuallyClosing(immediateFuture(closeable1), closingExecutor),
                ClosingFuture.from(immediateFuture("value2")),
                ClosingFuture.from(immediateFuture("value3")),
                ClosingFuture.from(immediateFuture("value4")),
                ClosingFuture.from(immediateFuture("value5")))
            .call(
                new ClosingFunction5<

        ClosingFuture.whenAllSucceed(
                ClosingFuture.eventuallyClosing(immediateFuture(closeable1), closingExecutor),
                ClosingFuture.from(immediateFuture("value2")),
                ClosingFuture.from(immediateFuture("value3")),
                ClosingFuture.from(immediateFuture("value4")),
                ClosingFuture.from(immediateFuture("value5")))
            .call(
                new ClosingFunction5<

    ListenableFuture<String> f =
        new SimpleForwardingListenableFuture<String>(immediateFuture("a")) {};
    verify(!(f instanceof FluentFuture));
    assertThat(FluentFuture.from(f).get()).isEqualTo("a");
    // TODO(cpovirk): Test forwarding more extensively.
  }

  public void testAddCallback() {
    FluentFuture<String> f = FluentFuture.from(immediateFuture("a"));
    final boolean[] called = new boolean[1];
    f.addCallback(

    ListenableFuture<String> f =
        new SimpleForwardingListenableFuture<String>(immediateFuture("a")) {};
    verify(!(f instanceof FluentFuture));
    assertThat(FluentFuture.from(f).get()).isEqualTo("a");
    // TODO(cpovirk): Test forwarding more extensively.
  }

  public void testAddCallback() {
    FluentFuture<String> f = FluentFuture.from(immediateFuture("a"));
    final boolean[] called = new boolean[1];
    f.addCallback(

@GwtCompatible
public class FuturesGetDoneTest extends TestCase {
  public void testSuccessful() throws ExecutionException {
    assertThat(getDone(immediateFuture("a"))).isEqualTo("a");
  }

  public void testSuccessfulNull() throws ExecutionException {
    assertThat(getDone(Futures.<@Nullable String>immediateFuture(null))).isEqualTo(null);
  }

  public void testFailed() {
    Exception failureCause = new Exception();
    try {

          }
        };

    // Since holder.value is 2, applying 4 should yield 6.
    assertEquals(6, adder.apply(4).intValue());

    ListenableFuture<Integer> immediateFuture = immediateFuture(4);
    Future<Integer> transformedFuture = transform(immediateFuture, adder, directExecutor());

    // The composed future also yields 6.
    assertEquals(6, getDone(transformedFuture).intValue());

  public void testGetUnchecked_success() {
    assertEquals("foo", getUnchecked(immediateFuture("foo")));
  }

  @J2ktIncompatible
  @GwtIncompatible // Thread.interrupt
  public void testGetUnchecked_interrupted() {
    Thread.currentThread().interrupt();
    try {
      assertEquals("foo", getUnchecked(immediateFuture("foo")));
      assertTrue(Thread.currentThread().isInterrupted());
    } finally {

@GwtCompatible
public class FuturesGetDoneTest extends TestCase {
  public void testSuccessful() throws ExecutionException {
    assertThat(getDone(immediateFuture("a"))).isEqualTo("a");
  }

  public void testSuccessfulNull() throws ExecutionException {
    assertThat(getDone(Futures.<@Nullable String>immediateFuture(null))).isEqualTo(null);
  }

  public void testFailed() {
    Exception failureCause = new Exception();
    try {

  public void testGetUnchecked_success() {
    assertEquals("foo", getUnchecked(immediateFuture("foo")));
  }

  @J2ktIncompatible
  @GwtIncompatible // Thread.interrupt
  public void testGetUnchecked_interrupted() {
    Thread.currentThread().interrupt();
    try {
      assertEquals("foo", getUnchecked(immediateFuture("foo")));
      assertTrue(Thread.currentThread().isInterrupted());
    } finally {