1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one or more
3 * contributor license agreements. See the NOTICE file distributed with
4 * this work for additional information regarding copyright ownership.
5 * The ASF licenses this file to You under the Apache License, Version 2.0
6 * (the "License"); you may not use this file except in compliance with
7 * the License. You may obtain a copy of the License at
8 *
9 * http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 */
17 package org.apache.commons.math.genetics;
18
19 import static org.junit.Assert.*;
20
21 import java.util.ArrayList;
22
23 import org.junit.Test;
24
25 public class ListPopulationTest {
26
27 @Test
28 public void testGetFittestChromosome() {
29 Chromosome c1 = new Chromosome() {
30 public double fitness() {
31 return 0;
32 }
33 };
34 Chromosome c2 = new Chromosome() {
35 public double fitness() {
36 return 10;
37 }
38 };
39 Chromosome c3 = new Chromosome() {
40 public double fitness() {
41 return 15;
42 }
43 };
44
45 ArrayList<Chromosome> chromosomes = new ArrayList<Chromosome> ();
46 chromosomes.add(c1);
47 chromosomes.add(c2);
48 chromosomes.add(c3);
49
50 ListPopulation population = new ListPopulation(chromosomes,10) {
51
52 public Population nextGeneration() {
53 // not important
54 return null;
55 }
56 };
57
58 assertEquals(c3, population.getFittestChromosome());
59 }
60
61 }