} catch (Exception e) {
                  throw new AssertionError(e);
                }

                dispatcher.dispatch(2, integerSubscribers.iterator());
                latch.countDown();
              }
            })
        .start();

    new Thread(
            new Runnable() {
              @Override
              public void run() {
                try {

                    fail("Unexpected exception: " + e.getMessage());
                } finally {
                    completeLatch.countDown();
                }
            }).start();
        }

        // Start all threads simultaneously
        startLatch.countDown();

        // Wait for completion
        assertTrue(completeLatch.await(5, TimeUnit.SECONDS));

        // Authenticator should be closed

                } catch (final Exception e) {
                    logger.warn("Could not close a process input stream.", e);
                } finally {
                    latch.countDown();
                }
            }, "ProcessCloser-input-" + sessionId).start();
            new Thread(() -> {
                try {
                    CloseableUtil.closeQuietly(process.getErrorStream());

          @Override
          String runInterruptibly() throws Exception {
            BrokenChannel bc = new BrokenChannel();
            bc.doBegin();
            isInterruptibleRegistered.countDown();
            new CountDownLatch(1).await(); // the interrupt will wake us up
            return "impossible!";
          }

          @Override
          boolean isDone() {
            return false;
          }

              new Callable<@Nullable Void>() {
                @Override
                public @Nullable Void call() throws Exception {
                  startLatch.countDown();
                  startLatch.await();
                  callable.call();
                  doneLatch.countDown();
                  return null;
                }
              });
    }
    doneLatch.await();
  }

    Object unused =
        new Object() {
          @SuppressWarnings({"removal", "Finalize"}) // b/260137033
          @Override
          protected void finalize() {
            latch.countDown();
          }
        };
    unused = null; // Hint to the JIT that unused is unreachable
    GcFinalization.await(latch);
    assertEquals(0, latch.getCount());
  }

  public void testAwaitDone_future() {

          }
        };
    Thread thread1 = new Thread(execute);
    Thread thread2 = new Thread(execute);
    thread1.start();
    thread2.start();
    assertEquals(0, runCalled.get());
    okayToRun.countDown();
    thread1.join();
    thread2.join();
    assertEquals(1, runCalled.get());
  }

  public void testAddAfterRun() throws Exception {
    // Run the previous test
    testRunOnPopulatedList();

 *
 * <p>Here's an example that tests a {@code finalize} method:
 *
 * {@snippet :
 * final CountDownLatch latch = new CountDownLatch(1);
 * Object x = new MyClass() {
 *   ...
 *   protected void finalize() { latch.countDown(); ... }
 * };
 * x = null;  // Hint to the JIT that x is stack-unreachable
 * GcFinalization.await(latch);
 * }
 *
 * <p>Here's an example that uses a user-defined finalization predicate:
 *
 * {@snippet :

                computationStarted.countDown();
                cache.getUnchecked("b");
                computationComplete.countDown();
              }
            })
        .start();

    // wait for the computingEntry to be created
    computationStarted.await();
    cache.invalidateAll();
    // let the computation proceed
    computingLatch.countDown();

                        }
                    }
                } catch (Exception e) {
                    exception.set(e);
                } finally {
                    latch.countDown();
                }
            });
        }

        latch.await(30, TimeUnit.SECONDS);
        executor.shutdown();

        if (exception.get() != null) {
            throw exception.get();