/*
 *
 * Derby - Class org.apache.derbyTesting.junit.ChangeConfigurationSetup
 *
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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.apache.derbyTesting.junit;

import junit.extensions.TestSetup;
import junit.framework.Test;

abstract class ChangeConfigurationSetup extends TestSetup {
    
    private TestConfiguration old;
    
    ChangeConfigurationSetup(Test test)
    {
        super(test);
    }
    
    protected final void setUp()
    {
        old = TestConfiguration.getCurrent();
        TestConfiguration.setCurrent(getNewConfiguration(old));
    }
    
    protected final void tearDown()
    {
        TestConfiguration.setCurrent(old);
    }
    
    /**
     * Return the new configuration to use at setUp time.
     * Most likely based upon the old configuration passed in. 
     * @param old The current configuration.
     * @return new configuration
     */
    abstract TestConfiguration getNewConfiguration(TestConfiguration old);
}