/*
 * 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.commons.math.genetics;

import static org.junit.Assert.*;

import java.util.ArrayList;

import org.junit.Test;

public class ListPopulationTest {

	@Test
	public void testGetFittestChromosome() {
		Chromosome c1 = new Chromosome() {
			public double fitness() {
				return 0;
			}
		};
		Chromosome c2 = new Chromosome() {
			public double fitness() {
				return 10;
			}
		};
		Chromosome c3 = new Chromosome() {
			public double fitness() {
				return 15;
			}
		};

		ArrayList<Chromosome> chromosomes = new ArrayList<Chromosome>();
		chromosomes.add(c1);
		chromosomes.add(c2);
		chromosomes.add(c3);

		ListPopulation population = new ListPopulation(chromosomes, 10) {

			public Population nextGeneration() {
				// not important
				return null;
			}
		};

		assertEquals(c3, population.getFittestChromosome());
	}

}
