public void ComplexTest_HighNumberOfEntries()
{
var elements = new Entry[10000];
for (int i = 0; i < elements.Length; i++)
{
elements[i] = new Entry(random.NextDouble() * 100 + 100);
}
AssertCount(elements);
}
public void NextDouble_WithoutSeed_ReturnsValuesBetween0And1()
{
// Arrange
var randomValues = new double[Iterations];
var rng = new DefaultRandomNumberGenerator();
// Action
for (var i = 0; i < Iterations; i++)
{
randomValues[i] = rng.NextDouble();
}
// Assert
Assert.IsTrue(randomValues.All(x => x >= 0 && x < 1));
}
public void NextDouble_WithoutSeed_ReturnsEquallyDistributedValues()
{
// Arrange
var randomValues = new double[Iterations];
var rng = new DefaultRandomNumberGenerator();
const int AcceptedDeviation = 1000;
// Action
for (var i = 0; i < Iterations; i++)
{
randomValues[i] = rng.NextDouble();
}
// Assert
Assert.IsTrue(randomValues.Sum() > Iterations / 2 - AcceptedDeviation);
Assert.IsTrue(randomValues.Sum() < Iterations / 2 + AcceptedDeviation);
}
public void NextDouble_WithSeed_ReturnsAlwaysTheSameValue()
{
// Arrange
var randomValues = new double[Iterations];
var seed = new System.Random().Next();
// Action
for (var i = 0; i < Iterations; i++)
{
var rng = new DefaultRandomNumberGenerator(seed);
randomValues[i] = rng.NextDouble();
var a = randomValues[i];
Console.WriteLine(randomValues[i]);
}
// Assert
Assert.IsTrue(randomValues.All(x => x == randomValues[0]));
}
public void TournamentSelection_PerfTest()
{
var random = new DefaultRandomNumberGenerator();
var config = new EAConfiguration
{
TournamentSize = 20,
TournamentProbability = 0.5
};
var popsize = 10000;
var pop = new Population(popsize);
pop.Fill(() => CreatePhenotypeMock(random.NextDouble() * 10).Object);
pop.Sort(EAMode.MaximizeFitness);
Console.WriteLine($"popsize = {popsize}, tournament size = {config.TournamentSize}");
var watch = new Stopwatch();
watch.Start();
#pragma warning disable CS0618 // Type or member is obsolete
IParentSelection selection = new TournamentParentSelectionOld(config);
#pragma warning restore CS0618 // Type or member is obsolete
foreach (var selected in selection.SelectParents(pop, popsize, EAMode.MaximizeFitness, random))
{
}
watch.Stop();
Console.WriteLine($"old: {watch.ElapsedMilliseconds} ms");
watch.Restart();
selection = new TournamentParentSelection(config);
foreach (var selected in selection.SelectParents(pop, popsize, EAMode.MaximizeFitness, random))
{
}
watch.Stop();
Console.WriteLine($"new: {watch.ElapsedMilliseconds} ms");
}