public void BoltzmannSelectionOperator_Select()
{
double initialTemp = 10;
GeneticAlgorithm algorithm = GetMockAlgorithm(initialTemp);
FakeBoltzmannSelectionOperator op = (FakeBoltzmannSelectionOperator)algorithm.SelectionOperator;
op.Initialize(algorithm);
MockPopulation population = new MockPopulation();
population.Initialize(algorithm);
MockEntity entity1 = new MockEntity();
entity1.Initialize(algorithm);
population.Entities.Add(entity1);
MockEntity entity2 = new MockEntity();
entity2.Initialize(algorithm);
population.Entities.Add(entity2);
IEnumerable <GeneticEntity> entities = op.SelectEntities(2, population);
Assert.NotNull(entities);
Assert.True(entities.Count() > 0, "An entity should have been selected.");
}
public void BoltzmannSelectionOperator_Ctor()
{
double initialTemp = 10;
GeneticAlgorithm algorithm = GetMockAlgorithm(initialTemp);
FakeBoltzmannSelectionOperator op = new FakeBoltzmannSelectionOperator {
InitialTemperature = initialTemp
};
op.Initialize(algorithm);
Assert.Equal(initialTemp, op.GetTemp());
}
public void BoltzmannSelectionOperator_Select_Overflow()
{
double initialTemp = .0000001;
MockGeneticAlgorithm algorithm = GetMockAlgorithm(initialTemp);
FakeBoltzmannSelectionOperator op = new FakeBoltzmannSelectionOperator();
op.Initialize(algorithm);
MockPopulation population = new MockPopulation();
population.Initialize(algorithm);
MockEntity entity = new MockEntity();
entity.Initialize(algorithm);
entity.ScaledFitnessValue = 1;
population.Entities.Add(entity);
Assert.Throws <OverflowException>(() => op.SelectEntities(1, population));
}
public void BoltzmannSelectionOperator_Temperature()
{
double initialTemp = 10;
MockGeneticAlgorithm algorithm = GetMockAlgorithm(initialTemp);
FakeBoltzmannSelectionOperator op = (FakeBoltzmannSelectionOperator)algorithm.SelectionOperator;
op.Initialize(algorithm);
double currentTemp = initialTemp;
for (int i = 0; i < 10; i++)
{
algorithm.RaiseGenerationCreatedEvent();
Assert.Equal(op.GetTemp(), currentTemp + 1);
currentTemp++;
}
}