public void Cross_ParentsWithTwoGenesProbabilityDiffPercents_DiffChildren()
{
var chromosome1 = MockRepository.GenerateStub<ChromosomeBase>(4);
chromosome1.ReplaceGenes(0, new Gene[]
{
new Gene(1),
new Gene(2),
new Gene(3),
new Gene(4),
});
chromosome1.Expect(c => c.CreateNew()).Return(MockRepository.GenerateStub<ChromosomeBase>(4));
var chromosome2 = MockRepository.GenerateStub<ChromosomeBase>(4);
chromosome2.ReplaceGenes(0, new Gene[]
{
new Gene(5),
new Gene(6),
new Gene(7),
new Gene(8)
});
chromosome2.Expect(c => c.CreateNew()).Return(MockRepository.GenerateStub<ChromosomeBase>(4));
var parents = new List<IChromosome>() { chromosome1, chromosome2 };
var mock = new MockRepository();
var rnd = mock.StrictMock<IRandomization>();
using (mock.Ordered())
{
rnd.Expect(r => r.GetDouble()).Return(0);
rnd.Expect(r => r.GetDouble()).Return(0.49);
rnd.Expect(r => r.GetDouble()).Return(0.5);
rnd.Expect(r => r.GetDouble()).Return(1);
}
RandomizationProvider.Current = rnd;
// 50%
var target = new UniformCrossover(0.5f);
mock.ReplayAll();
var actual = target.Cross(parents);
Assert.AreEqual(2, actual.Count);
Assert.AreEqual(4, actual[0].Length);
Assert.AreEqual(4, actual[1].Length);
Assert.AreEqual(1, actual[0].GetGene(0).Value);
Assert.AreEqual(2, actual[0].GetGene(1).Value);
Assert.AreEqual(7, actual[0].GetGene(2).Value);
Assert.AreEqual(8, actual[0].GetGene(3).Value);
Assert.AreEqual(5, actual[1].GetGene(0).Value);
Assert.AreEqual(6, actual[1].GetGene(1).Value);
Assert.AreEqual(3, actual[1].GetGene(2).Value);
Assert.AreEqual(4, actual[1].GetGene(3).Value);
// 70%
mock = new MockRepository();
rnd = mock.StrictMock<IRandomization>();
using (mock.Ordered())
{
rnd.Expect(r => r.GetDouble()).Return(0);
rnd.Expect(r => r.GetDouble()).Return(0.49);
rnd.Expect(r => r.GetDouble()).Return(0.5);
rnd.Expect(r => r.GetDouble()).Return(1);
}
RandomizationProvider.Current = rnd;
mock.ReplayAll();
target = new UniformCrossover(0.7f);
actual = target.Cross(parents);
Assert.AreEqual(2, actual.Count);
Assert.AreEqual(4, actual[0].Length);
Assert.AreEqual(4, actual[1].Length);
Assert.AreEqual(1, actual[0].GetGene(0).Value);
Assert.AreEqual(2, actual[0].GetGene(1).Value);
Assert.AreEqual(3, actual[0].GetGene(2).Value);
Assert.AreEqual(8, actual[0].GetGene(3).Value);
Assert.AreEqual(5, actual[1].GetGene(0).Value);
Assert.AreEqual(6, actual[1].GetGene(1).Value);
Assert.AreEqual(7, actual[1].GetGene(2).Value);
Assert.AreEqual(4, actual[1].GetGene(3).Value);
}
