/**
* 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.mahout.ga.watchmaker.cd;
import org.apache.mahout.common.RandomUtils;
import org.apache.mahout.examples.MahoutTestCase;
import org.junit.Test;
import java.util.Random;
public final class CDFitnessTest extends MahoutTestCase {
/**
* Test method for {@link org.apache.mahout.ga.watchmaker.cd.CDFitness#get()}.
*/
@Test
public void testGet() {
int n = 100;
Random rng = RandomUtils.getRandom();
for (int nloop = 0; nloop < n; nloop++) {
int tp = rng.nextInt(1000);
int tn = rng.nextInt(1000);
int fp = rng.nextInt(1000);
int fn = rng.nextInt(1000);
CDFitness fitness = new CDFitness(tp, fp, tn, fn);
double se = (double) tp / (tp + fn);
double sp = (double) tn / (tn + fp);
assertEquals(se * sp, fitness.get(), EPSILON);
}
}
}