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17 package org.apache.commons.math4.legacy.genetics;
18
19 import org.junit.Assert;
20 import org.junit.Test;
21
22 public class OnePointCrossoverTest {
23
24 @Test
25 public void testCrossover() {
26 @SuppressWarnings("boxing")
27 Integer[] p1 = new Integer[] {1,0,1,0,0,1,0,1,1};
28 @SuppressWarnings("boxing")
29 Integer[] p2 = new Integer[] {0,1,1,0,1,0,1,1,1};
30
31 BinaryChromosome p1c = new DummyBinaryChromosome(p1);
32 BinaryChromosome p2c = new DummyBinaryChromosome(p2);
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34 OnePointCrossover<Integer> opc = new OnePointCrossover<>();
35
36
37 for (int i=0; i<20; i++) {
38 ChromosomePair pair = opc.crossover(p1c,p2c);
39
40 Integer[] c1 = new Integer[p1.length];
41 Integer[] c2 = new Integer[p2.length];
42
43 c1 = ((BinaryChromosome) pair.getFirst()).getRepresentation().toArray(c1);
44 c2 = ((BinaryChromosome) pair.getSecond()).getRepresentation().toArray(c2);
45
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47 Assert.assertEquals(p1[0], c1[0]);
48 Assert.assertEquals(p2[0], c2[0]);
49 Assert.assertEquals(p1[p1.length-1], c1[c1.length-1]);
50 Assert.assertEquals(p2[p2.length-1], c2[c2.length-1]);
51
52 Assert.assertEquals(p1[2], c1[2]);
53 Assert.assertEquals(p2[2], c2[2]);
54 Assert.assertEquals(p1[3], c1[3]);
55 Assert.assertEquals(p2[3], c2[3]);
56 Assert.assertEquals(p1[7], c1[7]);
57 Assert.assertEquals(p2[7], c2[7]);
58 }
59 }
60 }