@Test public void simpleApplicationEventMulticasterWithTaskExecutor() { @SuppressWarnings("unchecked") ApplicationListener<ApplicationEvent> listener = mock(ApplicationListener.class); ApplicationEvent evt = new ContextClosedEvent(new StaticApplicationContext()); SimpleApplicationEventMulticaster smc = new SimpleApplicationEventMulticaster(); smc.setTaskExecutor( new Executor() { @Override public void execute(Runnable command) { command.run(); command.run(); } }); smc.addApplicationListener(listener); smc.multicastEvent(evt); verify(listener, times(2)).onApplicationEvent(evt); }