gistfile1.txt

/*
 * Copyright 2013-2014 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.xd.dirt.server;

import java.util.Properties;

import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.boot.builder.SpringApplicationBuilder;
import org.springframework.context.EnvironmentAware;
import org.springframework.context.annotation.Configuration;
import org.springframework.core.env.ConfigurableEnvironment;
import org.springframework.core.env.Environment;
import org.springframework.core.env.PropertiesPropertySource;
import org.springframework.core.env.PropertySource;
import org.springframework.util.Assert;

@EnableAutoConfiguration
public class TestApplication implements EnvironmentAware {

	private ConfigurableEnvironment environment;

	public static void main(String[] args) {
		new TestApplication().run(args);
	}

	public TestApplication run(String... args) {

		new SpringApplicationBuilder(ParentTestApplication.class)
				.child(TestApplication.class)
				.run(args);
		return this;
	}

	@Override
	public void setEnvironment(Environment environment) {
		this.environment = (ConfigurableEnvironment) environment;
		int precedence = this.environment.getPropertySources().precedenceOf(ParentTestApplication.testPropertySource);
		Assert.isTrue(precedence == 1, "Expected the precedence level is 1. But, the actual precedence level is: "
				+ String.valueOf(precedence));
	}
}


@Configuration
class ParentTestApplication implements EnvironmentAware {

	private ConfigurableEnvironment environment;

	protected static PropertySource testPropertySource = new PropertiesPropertySource("testing", new Properties());

	@Override
	public void setEnvironment(Environment environment) {
		this.environment = (ConfigurableEnvironment) environment;
		this.environment.getPropertySources().addFirst(testPropertySource);
	}
}