ConfigurationPropertiesRebinderProxyIntegrationTests.java

/*
 * Copyright 2006-2007 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.cloud.context.properties;

import java.util.HashMap;
import java.util.Map;

import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.autoconfigure.PropertyPlaceholderAutoConfiguration;
import org.springframework.boot.autoconfigure.aop.AopAutoConfiguration;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.boot.context.properties.EnableConfigurationProperties;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.boot.test.util.EnvironmentTestUtils;
import org.springframework.cloud.autoconfigure.ConfigurationPropertiesRebinderAutoConfiguration;
import org.springframework.cloud.autoconfigure.RefreshAutoConfiguration;
import org.springframework.cloud.context.properties.ConfigurationPropertiesRebinderProxyIntegrationTests.TestConfiguration;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Import;
import org.springframework.core.env.ConfigurableEnvironment;
import org.springframework.test.annotation.DirtiesContext;
import org.springframework.test.context.junit4.SpringRunner;

import static org.junit.Assert.assertEquals;

@RunWith(SpringRunner.class)
@SpringBootTest(classes = TestConfiguration.class,
		properties = { "messages.expiry.one=168", "messages.expiry.two=76" })
public class ConfigurationPropertiesRebinderProxyIntegrationTests {

	@Autowired
	private TestProperties properties;

	@Autowired
	private ConfigurationPropertiesRebinder rebinder;

	@Autowired
	private ConfigurableEnvironment environment;

	@Test
	@DirtiesContext
	public void testAppendProperties() throws Exception {
		// This comes out as a String not Integer if the rebinder processes the proxy
		// instead of the target
		assertEquals(new Integer(168), this.properties.getExpiry().get("one"));
		EnvironmentTestUtils.addEnvironment(this.environment, "messages.expiry.one=56");
		this.rebinder.rebind();
		assertEquals(new Integer(56), this.properties.getExpiry().get("one"));
	}

	@Configuration
	@EnableConfigurationProperties
	@Import({ Interceptor.class, RefreshConfiguration.RebinderConfiguration.class,
			PropertyPlaceholderAutoConfiguration.class, AopAutoConfiguration.class })
	protected static class TestConfiguration {

		@Bean
		protected TestProperties properties() {
			return new TestProperties();
		}

	}

	@Aspect
	protected static class Interceptor {
		@Before("execution(* *..TestProperties.*(..))")
		public void before() {
			System.err.println("Before");
		}
	}

	// Hack out a protected inner class for testing
	protected static class RefreshConfiguration extends RefreshAutoConfiguration {
		@Configuration
		protected static class RebinderConfiguration
				extends ConfigurationPropertiesRebinderAutoConfiguration {

		}
	}

	@ConfigurationProperties("messages")
	protected static class TestProperties {
		private String name;

		private final Map<String, Integer> expiry = new HashMap<>();

		public Map<String, Integer> getExpiry() {
			return expiry;
		}

		public String getName() {
			return name;
		}

		public void setName(String name) {
			this.name = name;
		}
	}

}