| /* |
| * 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.math3.genetics; |
| |
| |
| import java.util.ArrayList; |
| import java.util.Iterator; |
| |
| import org.apache.commons.math3.exception.NotPositiveException; |
| import org.apache.commons.math3.exception.NumberIsTooLargeException; |
| import org.apache.commons.math3.exception.NumberIsTooSmallException; |
| import org.junit.Assert; |
| 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; |
| } |
| }; |
| |
| Assert.assertEquals(c3, population.getFittestChromosome()); |
| } |
| |
| @Test |
| public void testChromosomes() { |
| final ArrayList<Chromosome> chromosomes = new ArrayList<Chromosome> (); |
| chromosomes.add(new DummyBinaryChromosome(BinaryChromosome.randomBinaryRepresentation(3))); |
| chromosomes.add(new DummyBinaryChromosome(BinaryChromosome.randomBinaryRepresentation(3))); |
| chromosomes.add(new DummyBinaryChromosome(BinaryChromosome.randomBinaryRepresentation(3))); |
| |
| final ListPopulation population = new ListPopulation(10) { |
| public Population nextGeneration() { |
| // not important |
| return null; |
| } |
| }; |
| |
| population.addChromosomes(chromosomes); |
| |
| Assert.assertEquals(chromosomes, population.getChromosomes()); |
| Assert.assertEquals(chromosomes.toString(), population.toString()); |
| |
| population.setPopulationLimit(50); |
| Assert.assertEquals(50, population.getPopulationLimit()); |
| } |
| |
| @Test(expected = NotPositiveException.class) |
| public void testSetPopulationLimit() { |
| final ListPopulation population = new ListPopulation(10) { |
| public Population nextGeneration() { |
| // not important |
| return null; |
| } |
| }; |
| |
| population.setPopulationLimit(-50); |
| } |
| |
| @Test(expected = NotPositiveException.class) |
| public void testConstructorPopulationLimitNotPositive() { |
| new ListPopulation(-10) { |
| public Population nextGeneration() { |
| // not important |
| return null; |
| } |
| }; |
| } |
| |
| @Test(expected = NotPositiveException.class) |
| public void testChromosomeListConstructorPopulationLimitNotPositive() { |
| final ArrayList<Chromosome> chromosomes = new ArrayList<Chromosome> (); |
| chromosomes.add(new DummyBinaryChromosome(BinaryChromosome.randomBinaryRepresentation(3))); |
| new ListPopulation(chromosomes, -10) { |
| public Population nextGeneration() { |
| // not important |
| return null; |
| } |
| }; |
| } |
| |
| @Test(expected = NumberIsTooLargeException.class) |
| public void testConstructorListOfChromosomesBiggerThanPopulationSize() { |
| final ArrayList<Chromosome> chromosomes = new ArrayList<Chromosome> (); |
| chromosomes.add(new DummyBinaryChromosome(BinaryChromosome.randomBinaryRepresentation(3))); |
| chromosomes.add(new DummyBinaryChromosome(BinaryChromosome.randomBinaryRepresentation(3))); |
| chromosomes.add(new DummyBinaryChromosome(BinaryChromosome.randomBinaryRepresentation(3))); |
| new ListPopulation(chromosomes, 1) { |
| public Population nextGeneration() { |
| // not important |
| return null; |
| } |
| }; |
| } |
| |
| @Test(expected=NumberIsTooLargeException.class) |
| public void testAddTooManyChromosomes() { |
| final ArrayList<Chromosome> chromosomes = new ArrayList<Chromosome> (); |
| chromosomes.add(new DummyBinaryChromosome(BinaryChromosome.randomBinaryRepresentation(3))); |
| chromosomes.add(new DummyBinaryChromosome(BinaryChromosome.randomBinaryRepresentation(3))); |
| chromosomes.add(new DummyBinaryChromosome(BinaryChromosome.randomBinaryRepresentation(3))); |
| |
| final ListPopulation population = new ListPopulation(2) { |
| public Population nextGeneration() { |
| // not important |
| return null; |
| } |
| }; |
| |
| population.addChromosomes(chromosomes); |
| } |
| |
| @Test(expected=NumberIsTooLargeException.class) |
| public void testAddTooManyChromosomesSingleCall() { |
| |
| final ListPopulation population = new ListPopulation(2) { |
| public Population nextGeneration() { |
| // not important |
| return null; |
| } |
| }; |
| |
| for (int i = 0; i <= population.getPopulationLimit(); i++) { |
| population.addChromosome(new DummyBinaryChromosome(BinaryChromosome.randomBinaryRepresentation(3))); |
| } |
| } |
| |
| @Test(expected = UnsupportedOperationException.class) |
| public void testIterator() { |
| final ArrayList<Chromosome> chromosomes = new ArrayList<Chromosome>(); |
| chromosomes.add(new DummyBinaryChromosome(BinaryChromosome.randomBinaryRepresentation(3))); |
| chromosomes.add(new DummyBinaryChromosome(BinaryChromosome.randomBinaryRepresentation(3))); |
| chromosomes.add(new DummyBinaryChromosome(BinaryChromosome.randomBinaryRepresentation(3))); |
| |
| final ListPopulation population = new ListPopulation(10) { |
| public Population nextGeneration() { |
| // not important |
| return null; |
| } |
| }; |
| |
| population.addChromosomes(chromosomes); |
| |
| final Iterator<Chromosome> iter = population.iterator(); |
| while (iter.hasNext()) { |
| iter.next(); |
| iter.remove(); |
| } |
| } |
| |
| @Test(expected=NumberIsTooSmallException.class) |
| public void testSetPopulationLimitTooSmall() { |
| final ArrayList<Chromosome> chromosomes = new ArrayList<Chromosome> (); |
| chromosomes.add(new DummyBinaryChromosome(BinaryChromosome.randomBinaryRepresentation(3))); |
| chromosomes.add(new DummyBinaryChromosome(BinaryChromosome.randomBinaryRepresentation(3))); |
| chromosomes.add(new DummyBinaryChromosome(BinaryChromosome.randomBinaryRepresentation(3))); |
| |
| final ListPopulation population = new ListPopulation(chromosomes, 3) { |
| public Population nextGeneration() { |
| // not important |
| return null; |
| } |
| }; |
| |
| population.setPopulationLimit(2); |
| } |
| |
| } |