},
                executor);
    assertFinallyFailsWithException(closingFuture);
    waitUntilClosed(closingFuture);
    assertClosed(closeable1, closeable2);
  }

  public void testTransformAsync() throws Exception {
    ClosingFuture<String> closingFuture =
        ClosingFuture.from(immediateFuture("value"))
            .transformAsync(
                new AsyncClosingFunction<String, TestCloseable>() {