/*
* 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.math4.genetics;
import org.apache.commons.math4.genetics.Chromosome;
import org.apache.commons.math4.genetics.MutationPolicy;
import org.apache.commons.math4.genetics.RandomKey;
import org.apache.commons.math4.genetics.RandomKeyMutation;
import org.junit.Assert;
import org.junit.Test;
public class RandomKeyMutationTest {
@Test
public void testMutate() {
MutationPolicy mutation = new RandomKeyMutation();
int l=10;
for (int i=0; i<20; i++) {
DummyRandomKey origRk = new DummyRandomKey(RandomKey.randomPermutation(l));
Chromosome mutated = mutation.mutate(origRk);
DummyRandomKey mutatedRk = (DummyRandomKey) mutated;
int changes = 0;
for (int j=0; j<origRk.getLength(); j++) {
if (origRk.getRepresentation().get(j) != mutatedRk.getRepresentation().get(j)) {
changes++;
}
}
Assert.assertEquals(1,changes);
}
}
}