public void Test_Evolve()
{
Population pop = new Population(1024, 0.8d, 0.1d, 0.05d);
Chromosome[] oldArr = pop.GetPopulation();
// Evolve and get the new population
pop.Evolve();
Chromosome[] newArr = pop.GetPopulation();
// Check the details on the resulting evolved population.
Assert.AreEqual(80, (int) (pop.GetCrossover() * 100));
Assert.AreEqual(10, (int) (pop.GetElitism() * 100));
Assert.AreEqual(5, (int) (pop.GetMutation() * 100));
// Check to ensure that the elitism took.
int elitismCount = (int)Math.Round(1024 * 0.1d);
int counter = 0;
for (int i = 0; i < oldArr.Length; i++)
{
if (Array.BinarySearch(newArr, oldArr[i]) >= 0)
{
++counter;
}
}
// Account for the fact that mating/mutation may cause more than
// just the fixed number of chromosomes to be identical.
Assert.IsTrue(counter >= elitismCount);
Assert.IsTrue(counter < oldArr.Length);
}
public void Test_GetMutation()
{
Population pop = new Population(1024, 0.8d, 0.1d, 0.05d);
Assert.AreEqual(5, (int) (pop.GetMutation() * 100));
pop = new Population(1024, 0.8d, 0.1d, 0.0d);
Assert.AreEqual(0, (int) (pop.GetMutation() * 100));
pop = new Population(1024, 0.8d, 0.1d, 1.0d);
Assert.AreEqual(100, (int) (pop.GetMutation() * 100));
}