public void CrossoverOperator_Crossover()
{
double crossoverRate = 1; // force crossover to occur
MockGeneticAlgorithm algorithm = GetGeneticAlgorithm(crossoverRate);
FakeCrossoverOperator op = new FakeCrossoverOperator {
CrossoverRate = crossoverRate
};
op.Initialize(algorithm);
MockEntity entity1 = new MockEntity();
entity1.Initialize(algorithm);
entity1.Age = 2;
entity1.Identifier = "1";
MockEntity entity2 = new MockEntity();
entity2.Initialize(algorithm);
entity2.Age = 5;
entity2.Identifier = "3";
IList <GeneticEntity> geneticEntities = op.Crossover(new GeneticEntity[] { entity1, entity2 }).ToList();
Assert.NotSame(entity1, geneticEntities[1]);
Assert.NotSame(entity2, geneticEntities[0]);
Assert.Equal(entity1.Identifier, ((MockEntity)geneticEntities[1]).Identifier);
Assert.Equal(entity2.Identifier, ((MockEntity)geneticEntities[0]).Identifier);
Assert.Equal(0, geneticEntities[0].Age);
Assert.Equal(0, geneticEntities[1].Age);
}
public void CrossoverOperator_Crossover_NoOp()
{
double crossoverRate = 0; // force crossover not to occur
MockGeneticAlgorithm algorithm = GetGeneticAlgorithm(crossoverRate);
FakeCrossoverOperator op = (FakeCrossoverOperator)algorithm.CrossoverOperator;
op.Initialize(algorithm);
MockEntity entity1 = new MockEntity();
entity1.Initialize(algorithm);
entity1.Identifier = "1";
MockEntity entity2 = new MockEntity();
entity2.Initialize(algorithm);
entity2.Identifier = "3";
IList <GeneticEntity> geneticEntities = op.Crossover(new GeneticEntity[] { entity1, entity2 }).ToList();
Assert.Same(entity1, geneticEntities[0]);
Assert.Same(entity2, geneticEntities[1]);
}
public void CrossoverOperator_Ctor_InvalidSetting2()
{
FakeCrossoverOperator config = new FakeCrossoverOperator();
Assert.Throws <ValidationException>(() => config.CrossoverRate = -1);
}
public void CrossoverOperator_Ctor_NullAlgorithm()
{
FakeCrossoverOperator op = new FakeCrossoverOperator();
Assert.Throws <ArgumentNullException>(() => op.Initialize(null));
}
