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/*
* 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 java.util.List;
import org.junit.Test;
public class ChromosomeTest {
@Test
public void testCompareTo() {
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 10;
}
};
assertTrue(c1.compareTo(c2) < 0);
assertTrue(c2.compareTo(c1) > 0);
assertEquals(0,c3.compareTo(c2));
assertEquals(0,c2.compareTo(c3));
}
private abstract static class DummyChromosome extends Chromosome {
private final int repr;
public DummyChromosome(final int repr) {
this.repr = repr;
}
@Override
protected boolean isSame(Chromosome another) {
return ((DummyChromosome) another).repr == repr;
}
}
@Test
public void testFindSameChromosome() {
Chromosome c1 = new DummyChromosome(1) {
public double fitness() {
return 1;
}
};
Chromosome c2 = new DummyChromosome(2) {
public double fitness() {
return 2;
}
};
Chromosome c3 = new DummyChromosome(3) {
public double fitness() {
return 3;
}
};
Chromosome c4 = new DummyChromosome(1) {
public double fitness() {
return 5;
}
};
Chromosome c5 = new DummyChromosome(15) {
public double fitness() {
return 15;
}
};
List<Chromosome> popChr = new ArrayList<Chromosome>();
popChr.add(c1);
popChr.add(c2);
popChr.add(c3);
Population pop = new ListPopulation(popChr,3) {
public Population nextGeneration() {
// not important
return null;
}
};
assertNull(c5.findSameChromosome(pop));
assertEquals(c1, c4.findSameChromosome(pop));
c4.searchForFitnessUpdate(pop);
assertEquals(1, c4.getFitness(),0);
}
}
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