@Test
public void listenersInApplicationContextWithNestedChild() {
StaticApplicationContext context = new StaticApplicationContext();
RootBeanDefinition nestedChild = new RootBeanDefinition(StaticApplicationContext.class);
nestedChild.getPropertyValues().add("parent", context);
nestedChild.setInitMethodName("refresh");
context.registerBeanDefinition("nestedChild", nestedChild);
RootBeanDefinition listener1Def = new RootBeanDefinition(MyOrderedListener1.class);
listener1Def.setDependsOn(new String[] {"nestedChild"});
context.registerBeanDefinition("listener1", listener1Def);
context.refresh();
MyOrderedListener1 listener1 = context.getBean("listener1", MyOrderedListener1.class);
MyEvent event1 = new MyEvent(context);
context.publishEvent(event1);
assertTrue(listener1.seenEvents.contains(event1));
SimpleApplicationEventMulticaster multicaster =
context.getBean(
AbstractApplicationContext.APPLICATION_EVENT_MULTICASTER_BEAN_NAME,
SimpleApplicationEventMulticaster.class);
assertFalse(multicaster.getApplicationListeners().isEmpty());
context.close();
assertTrue(multicaster.getApplicationListeners().isEmpty());
}
@Test
public void innerBeanAsListener() {
StaticApplicationContext context = new StaticApplicationContext();
RootBeanDefinition listenerDef = new RootBeanDefinition(TestBean.class);
listenerDef.getPropertyValues().add("friends", new RootBeanDefinition(BeanThatListens.class));
context.registerBeanDefinition("listener", listenerDef);
context.refresh();
context.publishEvent(new MyEvent(this));
context.publishEvent(new MyEvent(this));
TestBean listener = context.getBean(TestBean.class);
assertEquals(3, ((BeanThatListens) listener.getFriends().iterator().next()).getEventCount());
context.close();
}
@Test
public void nonSingletonListenerInApplicationContext() {
StaticApplicationContext context = new StaticApplicationContext();
RootBeanDefinition listener = new RootBeanDefinition(MyNonSingletonListener.class);
listener.setScope(RootBeanDefinition.SCOPE_PROTOTYPE);
context.registerBeanDefinition("listener", listener);
context.refresh();
MyEvent event1 = new MyEvent(context);
context.publishEvent(event1);
MyOtherEvent event2 = new MyOtherEvent(context);
context.publishEvent(event2);
MyEvent event3 = new MyEvent(context);
context.publishEvent(event3);
MyOtherEvent event4 = new MyOtherEvent(context);
context.publishEvent(event4);
assertTrue(MyNonSingletonListener.seenEvents.contains(event1));
assertTrue(MyNonSingletonListener.seenEvents.contains(event2));
assertTrue(MyNonSingletonListener.seenEvents.contains(event3));
assertTrue(MyNonSingletonListener.seenEvents.contains(event4));
MyNonSingletonListener.seenEvents.clear();
context.close();
}
@Test
public void listenerAndBroadcasterWithCircularReference() {
StaticApplicationContext context = new StaticApplicationContext();
context.registerBeanDefinition("broadcaster", new RootBeanDefinition(BeanThatBroadcasts.class));
RootBeanDefinition listenerDef = new RootBeanDefinition(BeanThatListens.class);
listenerDef
.getConstructorArgumentValues()
.addGenericArgumentValue(new RuntimeBeanReference("broadcaster"));
context.registerBeanDefinition("listener", listenerDef);
context.refresh();
BeanThatBroadcasts broadcaster = context.getBean("broadcaster", BeanThatBroadcasts.class);
context.publishEvent(new MyEvent(context));
assertEquals("The event was not received by the listener", 2, broadcaster.receivedCount);
context.close();
}
@Test
public void listenersInApplicationContext() {
StaticApplicationContext context = new StaticApplicationContext();
context.registerBeanDefinition("listener1", new RootBeanDefinition(MyOrderedListener1.class));
RootBeanDefinition listener2 = new RootBeanDefinition(MyOrderedListener2.class);
listener2
.getConstructorArgumentValues()
.addGenericArgumentValue(new RuntimeBeanReference("listener1"));
listener2.setLazyInit(true);
context.registerBeanDefinition("listener2", listener2);
context.refresh();
assertFalse(context.getDefaultListableBeanFactory().containsSingleton("listener2"));
MyOrderedListener1 listener1 = context.getBean("listener1", MyOrderedListener1.class);
MyOtherEvent event1 = new MyOtherEvent(context);
context.publishEvent(event1);
assertFalse(context.getDefaultListableBeanFactory().containsSingleton("listener2"));
MyEvent event2 = new MyEvent(context);
context.publishEvent(event2);
assertTrue(context.getDefaultListableBeanFactory().containsSingleton("listener2"));
MyEvent event3 = new MyEvent(context);
context.publishEvent(event3);
MyOtherEvent event4 = new MyOtherEvent(context);
context.publishEvent(event4);
assertTrue(listener1.seenEvents.contains(event1));
assertTrue(listener1.seenEvents.contains(event2));
assertTrue(listener1.seenEvents.contains(event3));
assertTrue(listener1.seenEvents.contains(event4));
listener1.seenEvents.clear();
context.publishEvent(event1);
context.publishEvent(event2);
context.publishEvent(event3);
context.publishEvent(event4);
assertTrue(listener1.seenEvents.contains(event1));
assertTrue(listener1.seenEvents.contains(event2));
assertTrue(listener1.seenEvents.contains(event3));
assertTrue(listener1.seenEvents.contains(event4));
context.close();
}