public void Mutate_NoProbality_NoReverseSequence()
{
var target = new ReverseSequenceMutation();
var chromosome = MockRepository.GenerateStub<ChromosomeBase>(4);
chromosome.ReplaceGenes(0, new Gene[]
{
new Gene(1),
new Gene(2),
new Gene(3),
new Gene(4),
});
var rnd = MockRepository.GenerateMock<IRandomization>();
rnd.Expect(r => r.GetDouble()).Return(0.1);
RandomizationProvider.Current = rnd;
target.Mutate(chromosome, 0);
Assert.AreEqual(4, chromosome.Length);
Assert.AreEqual(1, chromosome.GetGene(0).Value);
Assert.AreEqual(2, chromosome.GetGene(1).Value);
Assert.AreEqual(3, chromosome.GetGene(2).Value);
Assert.AreEqual(4, chromosome.GetGene(3).Value);
rnd.VerifyAllExpectations();
chromosome.VerifyAllExpectations();
}
public void Mutate_ValidChromosome_ReverseSequence()
{
var target = new ReverseSequenceMutation();
var chromosome = MockRepository.GenerateStub<ChromosomeBase>(6);
chromosome.ReplaceGenes(0, new Gene[]
{
new Gene(1),
new Gene(2),
new Gene(3),
new Gene(4),
new Gene(5),
new Gene(6),
});
var rnd = MockRepository.GenerateMock<IRandomization>();
rnd.Expect(r => r.GetUniqueInts(2, 0, 6)).Return(new int[] {1, 4});
RandomizationProvider.Current = rnd;
target.Mutate(chromosome, 1);
Assert.AreEqual(6, chromosome.Length);
Assert.AreEqual(1, chromosome.GetGene(0).Value);
Assert.AreEqual(5, chromosome.GetGene(1).Value);
Assert.AreEqual(4, chromosome.GetGene(2).Value);
Assert.AreEqual(3, chromosome.GetGene(3).Value);
Assert.AreEqual(2, chromosome.GetGene(4).Value);
Assert.AreEqual(6, chromosome.GetGene(5).Value);
rnd.VerifyAllExpectations();
chromosome.VerifyAllExpectations();
}
public void Mutate_LessThanThreeGenes_Exception()
{
var target = new ReverseSequenceMutation();
var chromosome = MockRepository.GenerateStub<ChromosomeBase>(2);
chromosome.ReplaceGenes(0, new Gene[]
{
new Gene(1),
});
ExceptionAssert.IsThrowing(new MutationException(target, "A chromosome should have, at least, 3 genes. {0} has only 2 gene.".With(chromosome.GetType().Name)), () =>
{
target.Mutate(chromosome, 0);
});
}