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/**
 * Copyright (C) 2013-2020 Vasilis Vryniotis 
 *
 * 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.datumbox.framework.tests.abstracts;

import com.datumbox.framework.common.ConfigurableFactory;
import com.datumbox.framework.common.Configuration;
import com.datumbox.framework.common.utilities.RandomGenerator;
import com.datumbox.framework.tests.Constants;
import org.junit.Before;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.util.Properties;

/**
 * The abstract class for all the Tests of the framework.
 * 
 * @author Vasilis Vryniotis 
 */
public abstract class AbstractTest {
    /**
     * The Logger of all Tests.
     * We want this to be non-static in order to print the names of the inherited classes.
     */
    protected final Logger logger = LoggerFactory.getLogger(getClass());
    
    /**
     * Public constructor of the Tests. It sets up the global seed in the RandomGenerator.
     */
    public AbstractTest() {
        //Set the global seed (Optional)
        RandomGenerator.setGlobalSeed(Constants.RANDOM_SEED);
    }
    
    /**
     * This method is executed before every test. It resets the seed of the
     * local Random to the original seed.
     */
    @Before
    public void setUp() {
        //Reset the seed of the local Random before every method execution
        RandomGenerator.getThreadLocalRandom().setSeed(Constants.RANDOM_SEED);
    }

    /**
     * Builds a configuration object.
     */
    protected Configuration getConfiguration() {
        String storageEngine = System.getProperty("storageEngine");
        if(storageEngine == null) {
            return Configuration.getConfiguration();
        }
        else {
            Properties p = new Properties();
            if("InMemory".equals(storageEngine)) {
                p.setProperty("configuration.storageConfiguration", "com.datumbox.framework.storage.inmemory.InMemoryConfiguration");

            }
            else if("MapDB".equals(storageEngine)) {
                p.setProperty("configuration.storageConfiguration", "com.datumbox.framework.storage.mapdb.MapDBConfiguration");
            }
            else {
                throw new IllegalArgumentException("Unsupported option.");
            }
            return ConfigurableFactory.getConfiguration(Configuration.class, p);
        }
    }
}