public void MutateTest()
{
var parent = new List <INode> {
new Mow(), new Mow(), new Mow(), new Mow()
};
var geneSet = new FnCreateGeneDelegate[] { () => new Turn() };
Tuple <Field, Mower, Program> FnEvaluate(IReadOnlyList <INode> instructions)
{
var field = new ToroidField(10, 10, FieldContents.Grass);
var location = new Location(5, 5);
var dir = Directions.North;
var mower = new Mower(location, dir);
var program = new Program(instructions);
program.Evaluate(mower, field, 0);
return(new Tuple <Field, Mower, Program>(field, mower, program));
}
Fitness FnFitness(IReadOnlyList <INode> genes) =>
GetFitness(genes, FnEvaluate);
var copy = parent.ToList();
Mutate(parent, geneSet, 2, 5, FnFitness, 1);
CollectionAssert.AreNotEqual(copy, parent);
Assert.IsTrue(parent.Any(c => c.GetType() != typeof(Mow)));
}
public void Evaluate(Mower mower, Field field, int count)
{
foreach (var instruction in Main)
{
instruction.Execute(mower, field, count + 1);
}
}
public void TurnLeftTest()
{
var location = new Location(5, 5);
var dir = Directions.North;
var mower = new Mower(location, dir);
mower.TurnLeft();
Assert.AreSame(Directions.West, mower.Direction);
Assert.AreEqual(location, mower.Location);
Assert.AreEqual(1, mower.StepCount);
}
public void Execute(Mower mower, Field field, int count)
{
if (count > 10)
{
throw new Exception("Too many calls.");
}
foreach (var op in Ops)
{
op.Execute(mower, field, count + 1);
}
}
public void JumpFailedTest()
{
var location = new Location(3, 2);
var dir = Directions.East;
var mower = new Mower(location, dir);
var field = new ValidatingField(4, 4, FieldContents.Grass);
field.Display(mower);
mower.Jump(field, 2, 1);
field.Display(mower);
Assert.AreEqual(new Location(3, 2), mower.Location);
}
public void Execute(Mower mower, Field field, int count)
{
if (count > 10)
{
throw new Exception("Too many calls.");
}
var funcId = FuncId ?? 0;
if (Funcs.Count > funcId)
{
Funcs[funcId].Execute(mower, field, count + 1);
}
}
private static void RunWith(FnCreateGeneDelegate[] geneSet, int width, int height, int minGenes, int maxGenes,
int expectedNumberOfInstructions, int maxMutationRounds, FnCreateFieldDelegate fnCreateField,
int expectedNumberOfSteps)
{
var mowerStartLocation = new Location(width / 2, height / 2);
var mowerStartDirection = Directions.South;
List <INode> FnCreate() =>
Create(geneSet, 1, height);
Tuple <Field, Mower, Program> FnEvaluate(IReadOnlyList <INode> instructions)
{
var program = new Program(instructions);
var mower = new Mower(mowerStartLocation, mowerStartDirection);
var field = fnCreateField();
try
{
program.Evaluate(mower, field, 0);
}
catch (Exception)
{
// pass
}
return(new Tuple <Field, Mower, Program>(field, mower, program));
}
Fitness FnGetFitness(IReadOnlyList <INode> genes) =>
GetFitness(genes, FnEvaluate);
var watch = Stopwatch.StartNew();
void FnDisplay(Chromosome <INode, Fitness> candidate) =>
Display(candidate, watch, FnEvaluate);
void FnMutate(List <INode> child) =>
Mutate(child, geneSet, minGenes, maxGenes, FnGetFitness, maxMutationRounds);
var optimalFitness = new Fitness(width * height, expectedNumberOfInstructions, expectedNumberOfSteps);
var best = Genetic <INode, Fitness> .GetBest(FnGetFitness, 0, optimalFitness, null, FnDisplay, FnMutate,
FnCreate, null, 10, Crossover);
Assert.IsTrue(optimalFitness.CompareTo(best.Fitness) <= 0);
}
public void MowTest()
{
var field = new ValidatingField(7, 3, FieldContents.Grass);
var mower = new Mower(new Location(1, 1), Directions.East);
field.Display(mower);
for (var i = 0; i < 4; i++)
{
mower.Mow(field);
field.Display(mower);
}
for (var i = 1; i < 5; i++)
{
Assert.AreEqual(i.ToString().PadLeft(2), field[i + 1, 1]);
}
}
public void Execute(Mower mower, Field field, int count)
{
mower.Jump(field, Forward, Right);
}
public void Execute(Mower mower, Field field, int count)
{
mower.TurnLeft();
}
public void Execute(Mower mower, Field field, int count)
{
mower.Mow(field);
}
