TestNSGAChromosome.java

/**
 * 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.ga;

import org.evosuite.Properties;
import org.evosuite.ga.variables.DoubleVariable;
import org.junit.Assert;
import org.junit.BeforeClass;
import org.junit.Test;

/**
 * 
 * @author José Campos
 */
public class TestNSGAChromosome
{
    @BeforeClass
    public static void setUp() {
        Properties.POPULATION = 100;
        Properties.SEARCH_BUDGET = 250;
        Properties.CROSSOVER_RATE = 0.9;
        Properties.RANDOM_SEED = 1l;
    }

    @Test
    public void testMutation()
    {
        double[] values = {-3.0};
        NSGAChromosome nsga = new NSGAChromosome(-5.0, 10.0, values);
        Assert.assertTrue(nsga.getNumberOfVariables() == 1);

        double v = ((DoubleVariable)nsga.getVariable(0)).getValue();
        Assert.assertEquals(v, -3.0, 0.0);

        nsga.mutate();
        v = ((DoubleVariable)nsga.getVariable(0)).getValue();
        Assert.assertEquals(v, -3.1, 0.1);
    }
}