public ISelection Elite()
{
var target = new EliteSelection();
target.SelectChromosomes(_chromosomesNumber, _generation);
return(target);
}
public void SelectChromosomes_InvalidNumber_Exception()
{
var target = new EliteSelection();
ExceptionAssert.IsThrowing(new ArgumentOutOfRangeException("number", "The number of selected chromosomes should be at least 2."), () => {
target.SelectChromosomes(-1, null);
});
ExceptionAssert.IsThrowing(new ArgumentOutOfRangeException("number", "The number of selected chromosomes should be at least 2."), () => {
target.SelectChromosomes(0, null);
});
ExceptionAssert.IsThrowing(new ArgumentOutOfRangeException("number", "The number of selected chromosomes should be at least 2."), () => {
target.SelectChromosomes(1, null);
});
}
public void SelectChromosomes_NullGeneration_Exception()
{
var target = new EliteSelection();
ExceptionAssert.IsThrowing(new ArgumentNullException("generation"), () => {
target.SelectChromosomes(2, null);
});
}
public void SelectChromosomes_InvalidNumber_Exception()
{
var target = new EliteSelection();
Assert.Catch <ArgumentOutOfRangeException>(() =>
{
target.SelectChromosomes(-1, null);
}, "The number of selected chromosomes should be at least 2.");
Assert.Catch <ArgumentOutOfRangeException>(() =>
{
target.SelectChromosomes(0, null);
}, "The number of selected chromosomes should be at least 2.");
Assert.Catch <ArgumentOutOfRangeException>(() =>
{
target.SelectChromosomes(1, null);
}, "The number of selected chromosomes should be at least 2.");
}
public void SelectChromosomes_NullGeneration_Exception()
{
var target = new EliteSelection();
var actual = Assert.Catch <ArgumentNullException>(() =>
{
target.SelectChromosomes(2, null);
});
Assert.AreEqual("generation", actual.ParamName);
}
public void SelectChromosomes_Generation_ChromosomesSelected()
{
var target = new EliteSelection();
var c1 = Substitute.ForPartsOf <ChromosomeBase>(2);
c1.Fitness = 0.1;
var c2 = Substitute.ForPartsOf <ChromosomeBase>(2);
c2.Fitness = 0.5;
var c3 = Substitute.ForPartsOf <ChromosomeBase>(2);
c3.Fitness = 0;
var c4 = Substitute.ForPartsOf <ChromosomeBase>(2);
c4.Fitness = 0.7;
var generation = new Generation(1, new List <IChromosome>()
{
c1, c2, c3, c4
});
var actual = target.SelectChromosomes(2, generation);
Assert.AreEqual(2, actual.Count);
Assert.AreEqual(0.7, actual[0].Fitness);
Assert.AreEqual(0.5, actual[1].Fitness);
actual = target.SelectChromosomes(3, generation);
Assert.AreEqual(3, actual.Count);
Assert.AreEqual(0.7, actual[0].Fitness);
Assert.AreEqual(0.5, actual[1].Fitness);
Assert.AreEqual(0.1, actual[2].Fitness);
}
