public void WhenCrossoverConfigurationRatiosChanged_CrossoverSelectionRequested_RequestedCrossoversShouldHaveApproxCorrectChance()
{
int onePoint = 0;
int twoPoint = 0;
int random = 0;
ConfigurationProvider.Crossover.OnePointCrossoverRatio = 1;
ConfigurationProvider.Crossover.TwoPointCrossoverRatio = 1;
ConfigurationProvider.Crossover.RandomCrossoverRatio = 1;
int tries = 30000;
Enumerable.Range(0, tries)
.ForEach(i => {
switch (CrossoverProvider.GetNextCrossover().CrossoverMethod)
{
case Crossover.CrossoverType.OnePoint:
onePoint++;
break;
case Crossover.CrossoverType.TwoPoint:
twoPoint++;
break;
case Crossover.CrossoverType.Random:
random++;
break;
}
});
double acceptableErrorPercent = .05;
int average = (int)(tries / 3);
int acceptableError = (int)(average * acceptableErrorPercent);
int acceptableMin = average - acceptableError;
int acceptableMax = average + acceptableError;
Assert.GreaterOrEqual(onePoint, acceptableMin);
Assert.LessOrEqual(onePoint, acceptableMax);
Assert.GreaterOrEqual(twoPoint, acceptableMin);
Assert.LessOrEqual(twoPoint, acceptableMax);
Assert.GreaterOrEqual(random, acceptableMin);
Assert.LessOrEqual(random, acceptableMax);
}
public void WhenCrossoverSelectionDefaultIsRequested_RequestedCrossoversShouldHaveApproxEqualChance()
{
int onePoint = 0;
int twoPoint = 0;
int random = 0;
int tries = 10000;
int min = (int)(tries * ((double)3 / 10));
int max = (int)(tries * ((double)4 / 10));
ConfigurationProvider.EnsureIsBuilt();
for (int i = 0; i < tries; i++)
{
switch (CrossoverProvider.GetNextCrossover().CrossoverMethod)
{
case Crossover.CrossoverType.OnePoint:
onePoint++;
break;
case Crossover.CrossoverType.TwoPoint:
twoPoint++;
break;
case Crossover.CrossoverType.Random:
random++;
break;
}
}
Assert.LessOrEqual(onePoint, max);
Assert.GreaterOrEqual(onePoint, min);
Assert.LessOrEqual(twoPoint, max);
Assert.GreaterOrEqual(twoPoint, min);
Assert.LessOrEqual(random, max);
Assert.GreaterOrEqual(random, min);
}
