| /* |
| * 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); |
| } |
| } |
| |
| } |