public void MinimumFitness_GetResultValue_WithScaling()
{
MinimumFitness metric = new MinimumFitness();
metric.Initialize(new MockGeneticAlgorithm {
FitnessScalingStrategy = new MockFitnessScalingStrategy()
});
MockPopulation population = new MockPopulation();
population.Entities.Add(new MockEntity {
ScaledFitnessValue = 11
});
population.Entities.Add(new MockEntity {
ScaledFitnessValue = 10
});
population.Entities.Add(new MockEntity {
ScaledFitnessValue = 15
});
population.Entities.Add(new MockEntity {
ScaledFitnessValue = 13
});
object result = metric.GetResultValue(population);
Assert.Equal((double)10, result);
}
public void MinimumFitness_GetResultValue_NoScaling()
{
MinimumFitness metric = new MinimumFitness();
metric.Initialize(new MockGeneticAlgorithm());
MockPopulation population = new MockPopulation();
PrivateObject populationAccessor = new PrivateObject(population, new PrivateType(typeof(Population)));
populationAccessor.SetField("rawMin", (double)2);
object result = metric.GetResultValue(population);
Assert.Equal((double)2, result);
}
public void MinimumFitness_GetResultValue_NullPopulation()
{
MockGeneticAlgorithm algorithm = new MockGeneticAlgorithm
{
SelectionOperator = new MockSelectionOperator(),
FitnessEvaluator = new MockFitnessEvaluator(),
GeneticEntitySeed = new MockEntity(),
PopulationSeed = new SimplePopulation(),
};
algorithm.Metrics.Add(new MinimumFitness());
MinimumFitness target = new MinimumFitness();
target.Initialize(algorithm);
Assert.Throws <ArgumentNullException>(() => target.GetResultValue(null));
}
public void BestMinimumFitness_GetResultValue_AllNegative()
{
MockGeneticAlgorithm algorithm = new MockGeneticAlgorithm();
MinimumFitness minimumFitness = new MinimumFitness();
algorithm.Metrics.Add(minimumFitness);
ObservableCollection <MetricResult> population1Results = minimumFitness.GetResults(0);
population1Results.Add(new MetricResult(0, 0, (double)-5, minimumFitness));
BestMinimumFitness target = new BestMinimumFitness();
target.Initialize(algorithm);
MockPopulation population = new MockPopulation
{
Index = 0
};
object result = target.GetResultValue(population);
Assert.Equal((double)-5, result);
population1Results.Add(new MetricResult(1, 0, (double)-6, minimumFitness));
result = target.GetResultValue(population);
Assert.Equal((double)-6, result);
ObservableCollection <MetricResult> population2Results = minimumFitness.GetResults(1);
population2Results.Add(new MetricResult(0, 2, (double)-10, minimumFitness));
MockPopulation population2 = new MockPopulation
{
Index = 1
};
result = target.GetResultValue(population2);
Assert.Equal((double)-10, result);
population2Results.Add(new MetricResult(1, 1, (double)-4, minimumFitness));
result = target.GetResultValue(population2);
Assert.Equal((double)-10, result);
}
