public void Cross_ParentWithNoOrderedGenes_Exception()
{
var target = new PartiallyMappedCrossover();
var chromosome1 = MockRepository.GenerateStub<ChromosomeBase>(8);
chromosome1.ReplaceGenes(0, new Gene[] {
new Gene(1),
new Gene(2),
new Gene(3),
new Gene(4),
new Gene(5),
new Gene(6),
new Gene(7),
new Gene(8)
});
chromosome1.Expect(c => c.CreateNew()).Return(MockRepository.GenerateStub<ChromosomeBase>(8));
var chromosome2 = MockRepository.GenerateStub<ChromosomeBase>(8);
chromosome2.ReplaceGenes(0, new Gene[]
{
new Gene(3),
new Gene(7),
new Gene(5),
new Gene(1),
new Gene(1),
new Gene(8),
new Gene(2),
new Gene(3)
});
chromosome2.Expect(c => c.CreateNew()).Return(MockRepository.GenerateStub<ChromosomeBase>(8));
ExceptionAssert.IsThrowing(new CrossoverException(target, "The Partially Mapped Crossover (PMX) can be only used with ordered chromosomes. The specified chromosome has repeated genes."), () =>
{
target.Cross(new List<IChromosome>() { chromosome1, chromosome2 });
});
}
public void Cross_ParentsWith8Genes_Cross()
{
var target = new PartiallyMappedCrossover();
// 1 2 3 4 5 6 7 8
var chromosome1 = MockRepository.GenerateStub<ChromosomeBase>(8);
chromosome1.ReplaceGenes(0, new Gene[] {
new Gene(1),
new Gene(2),
new Gene(3),
new Gene(4),
new Gene(5),
new Gene(6),
new Gene(7),
new Gene(8)
});
chromosome1.Expect(c => c.CreateNew()).Return(MockRepository.GenerateStub<ChromosomeBase>(8));
// 3 7 5 1 6 8 2 4
var chromosome2 = MockRepository.GenerateStub<ChromosomeBase>(8);
chromosome2.ReplaceGenes(0, new Gene[]
{
new Gene(3),
new Gene(7),
new Gene(5),
new Gene(1),
new Gene(6),
new Gene(8),
new Gene(2),
new Gene(4)
});
chromosome2.Expect(c => c.CreateNew()).Return(MockRepository.GenerateStub<ChromosomeBase>(8));
var rnd = MockRepository.GenerateMock<IRandomization>();
rnd.Expect(r => r.GetUniqueInts(2, 0, 8)).Return(new int[] { 3, 5 });
RandomizationProvider.Current = rnd;
IList<IChromosome> actual = null;;
TimeAssert.LessThan (30, () => {
actual = target.Cross (new List<IChromosome> () { chromosome1, chromosome2 });
});
Assert.AreEqual(2, actual.Count);
Assert.AreEqual(8, actual[0].Length);
Assert.AreEqual(8, actual[1].Length);
//Assert.AreEqual(8, actual[0].GetGenes().Distinct().Count());
//Assert.AreEqual(8, actual[1].GetGenes().Distinct().Count());
// offspring 1: (4 2 3 1 6 8 7 5)
Assert.AreEqual(4, actual[0].GetGene(0).Value);
Assert.AreEqual(2, actual[0].GetGene(1).Value);
Assert.AreEqual(3, actual[0].GetGene(2).Value);
Assert.AreEqual(1, actual[0].GetGene(3).Value);
Assert.AreEqual(6, actual[0].GetGene(4).Value);
Assert.AreEqual(8, actual[0].GetGene(5).Value);
Assert.AreEqual(7, actual[0].GetGene(6).Value);
Assert.AreEqual(5, actual[0].GetGene(7).Value);
// // offspring 2: (3 7 8 4 5 6 2 1)
Assert.AreEqual(3, actual[1].GetGene(0).Value);
Assert.AreEqual(7, actual[1].GetGene(1).Value);
Assert.AreEqual(8, actual[1].GetGene(2).Value);
Assert.AreEqual(4, actual[1].GetGene(3).Value);
Assert.AreEqual(5, actual[1].GetGene(4).Value);
Assert.AreEqual(6, actual[1].GetGene(5).Value);
Assert.AreEqual(2, actual[1].GetGene(6).Value);
Assert.AreEqual(1, actual[1].GetGene(7).Value);
}