private static void TestIsValid(int crossoverPointCount, bool requiresUniqueElementValues, bool expectedIsValid)
{
MultiPointCrossoverOperator op = new MultiPointCrossoverOperator
{
CrossoverPointCount = crossoverPointCount
};
MockGeneticAlgorithm algorithm = new MockGeneticAlgorithm
{
GeneticEntitySeed = new IntegerListEntity
{
RequiresUniqueElementValues = requiresUniqueElementValues
}
};
op.Initialize(algorithm);
MultiPointCrossoverOperatorCrossoverPointValidator validator =
new MultiPointCrossoverOperatorCrossoverPointValidator();
bool result = validator.IsValid(op, out string errorMessage);
Assert.Equal(expectedIsValid, result);
if (expectedIsValid)
{
Assert.Null(errorMessage);
}
else
{
Assert.NotNull(errorMessage);
}
}
public void MultiPointCrossoverOperator_GenerateCrossover_NullParents()
{
MultiPointCrossoverOperator op = new MultiPointCrossoverOperator();
PrivateObject accessor = new PrivateObject(op);
Assert.Throws <ArgumentNullException>(() => accessor.Invoke("GenerateCrossover", (IList <GeneticEntity>)null));
}
public void MultiPointCrossoverOperator_GenerateCrossover_TwoPointsDifferentLength_UniqueValues()
{
MultiPointCrossoverOperator op = new MultiPointCrossoverOperator
{
CrossoverPointCount = 2,
CrossoverRate = 1
};
MockGeneticAlgorithm algorithm = new MockGeneticAlgorithm
{
GeneticEntitySeed = new TestEntity
{
RequiresUniqueElementValues = true
}
};
op.Initialize(algorithm);
TestEntity entity1 = new TestEntity();
entity1.InnerList.AddRange(new object[] { 0, 1, 2, 3 });
TestEntity entity2 = new TestEntity();
entity2.InnerList.AddRange(new object[] { 3, 5, 4, 1, 6, 2, 0 });
List <GeneticEntity> parents = new List <GeneticEntity>
{
entity1,
entity2
};
RandomNumberService.Instance = new FakeRandomNumberService(4,
new Queue <int>(new int[] { 2, 3 }));
PrivateObject accessor = new PrivateObject(op);
IEnumerable <GeneticEntity> result = (IEnumerable <GeneticEntity>)accessor.Invoke(
"GenerateCrossover", parents);
Assert.Equal(2, result.Count());
TestEntity resultEntity1 = (TestEntity)result.ElementAt(0);
TestEntity resultEntity2 = (TestEntity)result.ElementAt(1);
Assert.Equal(new int[] { 0, 1, 4, 3 }, (IEnumerable)resultEntity1);
Assert.Equal(new int[] { 3, 5, 2, 1, 6, 4, 0 }, (IEnumerable)resultEntity2);
}
public void MultiPointCrossoverOperator_Validation()
{
MultiPointCrossoverOperator op = new MultiPointCrossoverOperator
{
CrossoverPointCount = 3,
};
MockGeneticAlgorithm algorithm = new MockGeneticAlgorithm
{
GeneticEntitySeed = new TestEntity
{
RequiresUniqueElementValues = true
}
};
op.Initialize(algorithm);
Assert.Throws <ValidationException>(() => op.Validate());
}
public void MultiPointCrossoverOperator_GenerateCrossover_ThreePointsSameLength()
{
MultiPointCrossoverOperator op = new MultiPointCrossoverOperator
{
CrossoverPointCount = 3,
CrossoverRate = 1
};
MockGeneticAlgorithm algorithm = new MockGeneticAlgorithm
{
GeneticEntitySeed = new TestEntity()
};
op.Initialize(algorithm);
TestEntity entity1 = new TestEntity();
entity1.InnerList.AddRange(new object[] { 0, 1, 2, 3, 4 });
TestEntity entity2 = new TestEntity();
entity2.InnerList.AddRange(new object[] { 4, 2, 1, 0, 0 });
List <GeneticEntity> parents = new List <GeneticEntity>
{
entity1,
entity2
};
RandomNumberService.Instance = new FakeRandomNumberService(5,
new Queue <int>(new int[] { 0, 3, 4 }));
PrivateObject accessor = new PrivateObject(op);
IEnumerable <GeneticEntity> result = (IEnumerable <GeneticEntity>)accessor.Invoke(
"GenerateCrossover", parents);
Assert.Equal(2, result.Count());
TestEntity resultEntity1 = (TestEntity)result.ElementAt(0);
TestEntity resultEntity2 = (TestEntity)result.ElementAt(1);
Assert.Equal(new int[] { 4, 2, 1, 3, 0 }, (IEnumerable)resultEntity1);
Assert.Equal(new int[] { 0, 1, 2, 0, 4 }, (IEnumerable)resultEntity2);
}
