com.zavakid.mushroom.impl.ConfigUtil.java Source code

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Here is the source code for com.zavakid.mushroom.impl.ConfigUtil.java

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/**
   Copyright [2013] [Mushroom]
    
   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.
 */
/**
 Notice : this source is extracted from Hadoop metric2 package
 and some source code may changed by zavakid
 */
package com.zavakid.mushroom.impl;

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertTrue;

import java.io.PrintStream;
import java.util.Iterator;

import org.apache.commons.configuration.Configuration;
import org.apache.commons.configuration.PropertiesConfiguration;

/**
 * Helpers for config tests and debugging
 * 
 * @author Hadoop metric2 package's authors
 * @since 0.1
 */
public class ConfigUtil {

    static void dump(Configuration c) {
        dump(null, c, System.out);
    }

    static void dump(String header, Configuration c) {
        dump(header, c, System.out);
    }

    static void dump(String header, Configuration c, PrintStream out) {
        PropertiesConfiguration p = new PropertiesConfiguration();
        p.copy(c);
        if (header != null) {
            out.println(header);
        }
        try {
            p.save(out);
        } catch (Exception e) {
            throw new RuntimeException("Error saving config", e);
        }
    }

    static void assertEq(Configuration expected, Configuration actual) {
        // Check that the actual config contains all the properties of the expected
        for (Iterator<?> it = expected.getKeys(); it.hasNext();) {
            String key = (String) it.next();
            assertTrue("actual should contain " + key, actual.containsKey(key));
            assertEquals("value of " + key, expected.getProperty(key), actual.getProperty(key));
        }
        // Check that the actual config has no extra properties
        for (Iterator<?> it = actual.getKeys(); it.hasNext();) {
            String key = (String) it.next();
            assertTrue("expected should contain " + key, expected.containsKey(key));
        }
    }

}