/**
* Copyright (C) 2010-2017 Gordon Fraser, Andrea Arcuri and EvoSuite
* contributors
*
* This file is part of EvoSuite.
*
* EvoSuite is free software: you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published
* by the Free Software Foundation, either version 3.0 of the License, or
* (at your option) any later version.
*
* EvoSuite is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with EvoSuite. If not, see <http://www.gnu.org/licenses/>.
*/
/**
*
*/
package org.evosuite.seeding.factories;
import org.evosuite.Properties;
import org.evosuite.ga.ChromosomeFactory;
import org.evosuite.ga.metaheuristics.GeneticAlgorithm;
import org.evosuite.testsuite.TestSuiteChromosome;
import org.evosuite.utils.Randomness;
/**
* @author Thomas White
*/
public class RandomIndividualTestSuiteChromosomeFactory implements
ChromosomeFactory<TestSuiteChromosome> {
private static final long serialVersionUID = 1L;
private final ChromosomeFactory<TestSuiteChromosome> defaultFactory;
private final GeneticAlgorithm<TestSuiteChromosome> geneticAlgorithm;
/**
* <p>
* Constructor for JUnitTestSuiteChromosomeFactory.
* </p>
*
* @param defaultFactory
* a {@link org.evosuite.ga.ChromosomeFactory} object.
*/
public RandomIndividualTestSuiteChromosomeFactory(
ChromosomeFactory<TestSuiteChromosome> defaultFactory,
GeneticAlgorithm<TestSuiteChromosome> geneticAlgorithm) {
this.defaultFactory = defaultFactory;
this.geneticAlgorithm = geneticAlgorithm;
}
/*
* (non-Javadoc)
*
* @see org.evosuite.ga.ChromosomeFactory#getChromosome()
*/
/** {@inheritDoc} */
@Override
public TestSuiteChromosome getChromosome() {
/*
* double P_delta = 0.1d; double P_clone = 0.1d; int MAX_CHANGES = 10;
*/
if (geneticAlgorithm != null && Randomness.nextDouble() < Properties.SEED_PROBABILITY) {
int populationSize = geneticAlgorithm.getPopulation().size();
TestSuiteChromosome ri = geneticAlgorithm.getPopulation().get(Randomness.nextInt(populationSize));
if (ri != null){
return ri;
}
}
return defaultFactory.getChromosome();
}
}