SpringApplicationTests.java 文件源码

@Test
public void eventsOrder() {
    SpringApplication application = new SpringApplication(ExampleConfig.class);
    application.setWebEnvironment(false);
    final List<ApplicationEvent> events = new ArrayList<ApplicationEvent>();
    class ApplicationRunningEventListener
            implements ApplicationListener<ApplicationEvent> {
        @Override
        public void onApplicationEvent(ApplicationEvent event) {
            events.add((event));
        }
    }
    application.addListeners(new ApplicationRunningEventListener());
    this.context = application.run();
    assertThat(events).hasSize(5);
    assertThat(events.get(0)).isInstanceOf(ApplicationStartedEvent.class);
    assertThat(events.get(1)).isInstanceOf(ApplicationEnvironmentPreparedEvent.class);
    assertThat(events.get(2)).isInstanceOf(ApplicationPreparedEvent.class);
    assertThat(events.get(3)).isInstanceOf(ContextRefreshedEvent.class);
    assertThat(events.get(4)).isInstanceOf(ApplicationReadyEvent.class);
}