/*
* Copyright 2012-2016 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.springframework.boot.context.config;
import org.junit.After;
import org.junit.Rule;
import org.junit.Test;
import org.junit.rules.ExpectedException;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.context.event.ApplicationEnvironmentPreparedEvent;
import org.springframework.context.ApplicationListener;
import org.springframework.context.ConfigurableApplicationContext;
import org.springframework.context.event.ContextRefreshedEvent;
import org.springframework.context.support.StaticApplicationContext;
import org.springframework.core.Ordered;
import org.springframework.core.annotation.Order;
import org.springframework.test.context.support.TestPropertySourceUtils;
import static org.assertj.core.api.Assertions.assertThat;
/**
* Tests for {@link DelegatingApplicationListener}.
*
* @author Dave Syer
*/
public class DelegatingApplicationListenerTests {
@Rule
public ExpectedException thrown = ExpectedException.none();
private final DelegatingApplicationListener listener = new DelegatingApplicationListener();
private final StaticApplicationContext context = new StaticApplicationContext();
@After
public void close() {
if (this.context != null) {
this.context.close();
}
}
@Test
public void orderedInitialize() throws Exception {
TestPropertySourceUtils.addInlinedPropertiesToEnvironment(this.context,
"context.listener.classes=" + MockInitB.class.getName() + ","
+ MockInitA.class.getName());
this.listener.onApplicationEvent(new ApplicationEnvironmentPreparedEvent(
new SpringApplication(), new String[0], this.context.getEnvironment()));
this.context.getBeanFactory().registerSingleton("testListener", this.listener);
this.context.refresh();
assertThat(this.context.getBeanFactory().getSingleton("a")).isEqualTo("a");
assertThat(this.context.getBeanFactory().getSingleton("b")).isEqualTo("b");
}
@Test
public void noInitializers() throws Exception {
this.listener.onApplicationEvent(new ApplicationEnvironmentPreparedEvent(
new SpringApplication(), new String[0], this.context.getEnvironment()));
}
@Test
public void emptyInitializers() throws Exception {
TestPropertySourceUtils.addInlinedPropertiesToEnvironment(this.context,
"context.listener.classes:");
this.listener.onApplicationEvent(new ApplicationEnvironmentPreparedEvent(
new SpringApplication(), new String[0], this.context.getEnvironment()));
}
@Order(Ordered.HIGHEST_PRECEDENCE)
private static class MockInitA implements ApplicationListener<ContextRefreshedEvent> {
@Override
public void onApplicationEvent(ContextRefreshedEvent event) {
ConfigurableApplicationContext applicationContext = (ConfigurableApplicationContext) event
.getApplicationContext();
applicationContext.getBeanFactory().registerSingleton("a", "a");
}
}
@Order(Ordered.LOWEST_PRECEDENCE)
private static class MockInitB implements ApplicationListener<ContextRefreshedEvent> {
@Override
public void onApplicationEvent(ContextRefreshedEvent event) {
ConfigurableApplicationContext applicationContext = (ConfigurableApplicationContext) event
.getApplicationContext();
assertThat(applicationContext.getBeanFactory().getSingleton("a"))
.isEqualTo("a");
applicationContext.getBeanFactory().registerSingleton("b", "b");
}
}
}