public void TestClosed()
{
RandomGeneratorExtensions.GetGetNewRandom = () => new RandomGenerator(4541247);
// create the problem and make sure 0->1->2->3->4 is the solution.
var problem = STSPHelper.CreateSTSP(0, 0, 5, 10, 40);
problem.Weights[0][1] = 1;
problem.Weights[1][2] = 1;
problem.Weights[2][3] = 1;
problem.Weights[3][4] = 1;
problem.Weights[4][0] = 1;
// create a route with one shift.
var route = new Optimization.Tours.Tour(new int[] { 0, 2, 3, 1, 4 }, 0);
// apply the 1-shift local search, it should find the customer to replocate.
var localSearch = new CheapestInsertionOperator(n: 50);
STSPFitness delta;
Assert.IsTrue(localSearch.Apply(problem, new STSPObjective(), route, out delta));
// test result.
Assert.AreEqual(-27, delta.Weight);
Assert.AreEqual(0, delta.Customers);
Assert.AreEqual(new int[] { 0, 1, 2, 3, 4 }, route.ToArray());
}
public void TestClosed()
{
RandomGeneratorExtensions.GetGetNewRandom = () => new RandomGenerator(4541247);
// create the problem and make sure 0->1->2->3->4 is the solution.
var problem = STSPHelper.CreateDirectedSTSP(0, 0, 5, 10, 1, 40);
problem.Weights.SetWeight(0, 1, 1);
problem.Weights.SetWeight(1, 2, 1);
problem.Weights.SetWeight(2, 3, 1);
problem.Weights.SetWeight(3, 4, 1);
problem.Weights.SetWeight(4, 0, 1);
// apply the operator.
var route = new Optimization.Tours.Tour(new int[] { 0, 12, 4, 16 }, 0);
// apply the 1-shift local search, it should find the customer to replocate.
var localSearch = new CheapestInsertionOperator(4, 10);
STSPFitness delta;
Assert.IsTrue(localSearch.Apply(problem, new STSPObjective(), route, out delta));
}