closingExecutor);
    waiter.awaitStarted();
    cancelFinalStepAndWait(closingFuture);
    // not closed until the callable returns
    assertStillOpen(closeable1);
    waiter.awaitReturned();
    assertClosed(closeable1);
  }

  public void testEventuallyClosing_throws() throws Exception {
    assertFinallyFailsWithException(
        ClosingFuture.eventuallyClosing(