public void CrossOver_NullParent2_ThrowsArgumentNullException()
{
var random = new Random();
var fitnessEvaluatorMock = new Mock<IFitnessEvaluator<string>>();
var parent1 = new Mock<Chromosome<string>>("", 0);
var stringSinglePointCrossOver = new StringSinglePointCrossOver(random, fitnessEvaluatorMock.Object);
Action action = () => stringSinglePointCrossOver.CrossOver(parent1.Object, null);
action.ShouldThrow<ArgumentNullException>();
}
public void CrossOver_CallsEvaluatorComputeFitness()
{
var random = new Random();
var parent1 = new Chromosome<string>("Parent1");
var parent2 = new Chromosome<string>("Parent2");
var fitnessEvaluatorMock = new Mock<IFitnessEvaluator<string>>();
fitnessEvaluatorMock.Verify();
var stringSinglePointCrossOver = new StringSinglePointCrossOver(random, fitnessEvaluatorMock.Object);
Action action = () => stringSinglePointCrossOver.CrossOver(parent1, parent2);
}
public void CrossOver_DifferentGeneLengthsInChromosomes_ThrowArgumentException()
{
var random = new Random();
var parent = new Chromosome<string>("Parent");
var parent2 = new Chromosome<string>("Parent2");
var fitnessEvaluatorMock = new Mock<IFitnessEvaluator<string>>();
var stringSinglePointCrossOver = new StringSinglePointCrossOver(random, fitnessEvaluatorMock.Object);
Action action = () => stringSinglePointCrossOver.CrossOver(parent, parent2);
action.ShouldThrow<ArgumentException>();
}
public void CrossOver_ResultingChromosomeHasSameLengthAsParents()
{
var random = new Random();
var parent1 = new Chromosome<string>("Parent1");
var parent2 = new Chromosome<string>("Parent2");
var fitnessEvaluatorMock = new Mock<IFitnessEvaluator<string>>();
fitnessEvaluatorMock.Setup<double>(x => x.ComputeFitness("Parent1")).Returns(0);
fitnessEvaluatorMock.Setup<double>(x => x.ComputeFitness("Parent2")).Returns(0);
var stringSinglePointCrossOver = new StringSinglePointCrossOver(random, fitnessEvaluatorMock.Object);
var child = stringSinglePointCrossOver.CrossOver(parent1, parent2);
child.Genes.Length.Should().Be(parent1.Genes.Length);
}
