/**
* Copyright 2014 Netflix, Inc.
*
* 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 com.netflix.config;
import static org.junit.Assert.*;
import org.apache.commons.configuration.BaseConfiguration;
import org.apache.commons.configuration.event.ConfigurationEvent;
import org.apache.commons.configuration.event.ConfigurationListener;
import org.junit.Test;
public class DynamicPropertyInitializationTest {
private volatile Object lastModified;
ConfigurationListener listener = new ConfigurationListener() {
@Override
public void configurationChanged(ConfigurationEvent arg0) {
if (!arg0.isBeforeUpdate()) {
lastModified = arg0.getPropertyValue();
}
}
};
@Test
public void testDefaultConfig() {
System.setProperty("xyz", "fromSystem");
DynamicStringProperty prop = new DynamicStringProperty("xyz", null);
assertNotNull(DynamicPropertyFactory.getBackingConfigurationSource());
assertEquals("fromSystem", prop.get());
ConfigurationManager.getConfigInstance().addConfigurationListener(listener);
//Because SystemProperties default to higher priority than application settings, this set will no-op
ConfigurationManager.getConfigInstance().setProperty("xyz", "override");
assertEquals("fromSystem", prop.get());
assertEquals(null, lastModified);
BaseConfiguration newConfig = new BaseConfiguration();
newConfig.setProperty("xyz", "fromNewConfig");
ConfigurationManager.install(newConfig);
assertEquals("fromNewConfig", prop.get());
ConfigurationManager.getConfigInstance().setProperty("xyz", "new");
assertEquals("new", lastModified);
assertEquals("new", prop.get());
assertEquals(3, newConfig.getConfigurationListeners().size());
}
}