static void Main(string[] args)
{
IConfiguration configuration = new Configuration();
IMutationStrategy trialVectorMutationStrategy = new TrialIndividualMutationStrategy(configuration);
ICrossoverStrategy crossoverStrategy = new BinomialCrossoverStrategy(configuration);
ISelectionStrategy generationSelectionStrategy = new MinimisationElitistSelectionStrategy();
ISelectionStrategy differenceVectorSelectionStrategy = new RandomSelectionStrategy();
IFitnessEvaluationStrategy fitnessEvaluationStrategy = new RastriginFitnessEvaluationStrategy();
DifferentialEvolution differentialEvolution = new DifferentialEvolution(
trialVectorMutationStrategy,
crossoverStrategy,
generationSelectionStrategy,
differenceVectorSelectionStrategy,
fitnessEvaluationStrategy,
configuration
);
differentialEvolution.Run();
var population = differentialEvolution.population;
foreach (Individual individual in population)
{
foreach (double dimension in individual.Position)
{
Console.Write(Math.Round(dimension) + ", ");
}
Console.WriteLine();
}
Console.Read();
}
public void GivenNoIndividuals_WhenTheRandomSelectionStrategyIsUsed_ItShouldReturnNull()
{
Mock <Random> mock = new Mock <Random>();
mock.Setup(x => x.Next(It.IsAny <int>())).Returns(0);
Random mockedRandom = mock.Object;
RandomGenerator.GetInstance().SetRandom(mockedRandom);
RandomSelectionStrategy selectionStrategy = new RandomSelectionStrategy();
Assert.That(() => selectionStrategy.Select(new List <Individual>()),
Throws.TypeOf <NoValidIndividualsException>());
}
public void GivenFourIndividuals_WhenTheRandomIndexIsThatOfTheFirstIndividual_ItShouldReturnTheFirstIndividual()
{
Individual individual1 = new Individual(null, new Configuration())
{
Fitness = 2.5555
};
Individual individual2 = new Individual(null, new Configuration())
{
Fitness = 1.234
};
Individual individual3 = new Individual(null, new Configuration())
{
Fitness = 1.234
};
Individual individual4 = new Individual(null, new Configuration())
{
Fitness = 1.234
};
Mock <Random> mock = new Mock <Random>();
mock.Setup(x => x.Next(It.IsAny <int>())).Returns(0);
Random mockedRandom = mock.Object;
RandomGenerator.GetInstance().SetRandom(mockedRandom);
RandomSelectionStrategy selectionStrategy = new RandomSelectionStrategy();
Individual result = selectionStrategy.Select(new List <Individual>
{
individual1, individual2, individual3, individual4
});
Assert.AreEqual(individual1, result);
}
