.catchingAsync(Throwable.class, t -> immediateFuture(t.getClass()), directExecutor());
    assertThat(f.get()).isEqualTo(CustomRuntimeException.class);
  }

  public void testTransform() throws Exception {
    FluentFuture<Integer> f =
        FluentFuture.from(immediateFuture(1)).transform(i -> i + 1, directExecutor());
    assertThat(f.get()).isEqualTo(2);
  }

            .catchingAsync(Throwable.class, t -> immediateFuture(t.getClass()), directExecutor());
    assertThat(f.get()).isEqualTo(CustomRuntimeException.class);
  }

  public void testTransform() throws Exception {
    FluentFuture<Integer> f =
        FluentFuture.from(immediateFuture(1)).transform(i -> i + 1, directExecutor());
    assertThat(f.get()).isEqualTo(2);
  }

    // Step 4's closeable is now closed.
    assertClosed(closeable4);
    // Step 3 still never ran, so its closeable should still be open.
    assertStillOpen(closeable3);
  }

  public void testTransform() throws Exception {
    ClosingFuture<String> closingFuture =
        ClosingFuture.from(immediateFuture("value"))
            .transform(
                (DeferredCloser closer, String v) -> {

    // Step 4's closeable is now closed.
    assertClosed(closeable4);
    // Step 3 still never ran, so its closeable should still be open.
    assertStillOpen(closeable3);
  }

  public void testTransform() throws Exception {
    ClosingFuture<String> closingFuture =
        ClosingFuture.from(immediateFuture("value"))
            .transform(
                (DeferredCloser closer, String v) -> {

    Iterator<String> iterator = list.iterator();
    assertThat(tryFind(iterator, Predicates.alwaysFalse())).isAbsent();
    assertFalse(iterator.hasNext());
  }

  public void testTransform() {
    Iterator<String> input = asList("1", "2", "3").iterator();
    Iterator<Integer> result =
        Iterators.transform(
            input,
            new Function<String, Integer>() {