public void SelectChromosomes_Generation_ChromosomesSelected()
{
var target = new EliteSelection();
var c1 = MockRepository.GeneratePartialMock<ChromosomeBase> (2);
c1.Fitness = 0.1;
var c2 = MockRepository.GeneratePartialMock<ChromosomeBase>(2);
c2.Fitness = 0.5;
var c3 = MockRepository.GeneratePartialMock<ChromosomeBase>(2);
c3.Fitness = 0;
var c4 = MockRepository.GeneratePartialMock<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);
}
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);
});
}
