gistfile1.txt

@Test
  public void testCloseRegistryOnVertxClose(TestContext context) throws Exception {
    Vertx vertx = Vertx.vertx();
    CommandRegistryImpl registry = (CommandRegistryImpl) CommandRegistry.get(vertx);
    context.assertFalse(registry.isClosed());
    CountDownLatch latch = new CountDownLatch(1);
    vertx.close(context.asyncAssertSuccess(v -> {
      context.assertTrue(registry.isClosed());
      latch.countDown();
    }));
    latch.await(10, TimeUnit.SECONDS);
  }