001 /* 002 * Licensed to the Apache Software Foundation (ASF) under one or more 003 * contributor license agreements. See the NOTICE file distributed with 004 * this work for additional information regarding copyright ownership. 005 * The ASF licenses this file to You under the Apache License, Version 2.0 006 * (the "License"); you may not use this file except in compliance with 007 * the License. You may obtain a copy of the License at 008 * 009 * http://www.apache.org/licenses/LICENSE-2.0 010 * 011 * Unless required by applicable law or agreed to in writing, software 012 * distributed under the License is distributed on an "AS IS" BASIS, 013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 014 * See the License for the specific language governing permissions and 015 * limitations under the License. 016 */ 017 package org.apache.commons.math.genetics; 018 019 import static org.junit.Assert.*; 020 021 import java.util.ArrayList; 022 023 import org.junit.Test; 024 025 public class ListPopulationTest { 026 027 @Test 028 public void testGetFittestChromosome() { 029 Chromosome c1 = new Chromosome() { 030 public double fitness() { 031 return 0; 032 } 033 }; 034 Chromosome c2 = new Chromosome() { 035 public double fitness() { 036 return 10; 037 } 038 }; 039 Chromosome c3 = new Chromosome() { 040 public double fitness() { 041 return 15; 042 } 043 }; 044 045 ArrayList<Chromosome> chromosomes = new ArrayList<Chromosome> (); 046 chromosomes.add(c1); 047 chromosomes.add(c2); 048 chromosomes.add(c3); 049 050 ListPopulation population = new ListPopulation(chromosomes,10) { 051 052 public Population nextGeneration() { 053 // not important 054 return null; 055 } 056 }; 057 058 assertEquals(c3, population.getFittestChromosome()); 059 } 060 061 }