#region License Information
/* HeuristicLab
* Copyright (C) 2002-2016 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
*
* This file is part of HeuristicLab.
*
* HeuristicLab is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* HeuristicLab is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with HeuristicLab. If not, see .
*/
#endregion
using System.IO;
using System.Linq;
using HeuristicLab.Algorithms.TabuSearch;
using HeuristicLab.Persistence.Default.Xml;
using HeuristicLab.Problems.Instances.VehicleRouting;
using HeuristicLab.Problems.VehicleRouting;
using HeuristicLab.Problems.VehicleRouting.Encodings.Potvin;
using Microsoft.VisualStudio.TestTools.UnitTesting;
namespace HeuristicLab.Tests {
[TestClass]
public class TabuSearchVRPSampleTest {
private const string SampleFileName = "TS_VRP";
[TestMethod]
[TestCategory("Samples.Create")]
[TestProperty("Time", "medium")]
public void CreateTabuSearchVRPSampleTest() {
var vrp = CreateTabuSearchVrpSample();
string path = Path.Combine(SamplesUtils.SamplesDirectory, SampleFileName + SamplesUtils.SampleFileExtension);
XmlGenerator.Serialize(vrp, path);
}
[TestMethod]
[TestCategory("Samples.Execute")]
[TestProperty("Time", "long")]
public void RunTabuSearchVRPSampleTest() {
var vrp = CreateTabuSearchVrpSample();
vrp.SetSeedRandomly.Value = false;
SamplesUtils.RunAlgorithm(vrp);
Assert.AreEqual(1473, SamplesUtils.GetDoubleResult(vrp, "BestQuality"));
Assert.AreEqual(2102.1192622950812, SamplesUtils.GetDoubleResult(vrp, "CurrentAverageQuality"));
Assert.AreEqual(4006, SamplesUtils.GetDoubleResult(vrp, "CurrentWorstQuality"));
Assert.AreEqual(119072, SamplesUtils.GetIntResult(vrp, "EvaluatedMoves"));
}
private TabuSearch CreateTabuSearchVrpSample() {
TabuSearch ts = new TabuSearch();
#region Problem Configuration
var provider = new AugeratInstanceProvider();
var instance = provider.GetDataDescriptors().Where(x => x.Name == "A-n62-k8").Single();
VehicleRoutingProblem vrpProblem = new VehicleRoutingProblem();
vrpProblem.Load(provider.LoadData(instance));
#endregion
#region Algorithm Configuration
ts.Name = "Tabu Search - VRP";
ts.Description = "A tabu search algorithm that solves the \"A-n62-k8\" VRP (imported from Augerat)";
ts.Problem = vrpProblem;
ts.MaximumIterations.Value = 200;
// move generator has to be set first
var moveGenerator = ts.MoveGeneratorParameter.ValidValues
.OfType()
.Single();
ts.MoveGenerator = moveGenerator;
var moveEvaluator = ts.MoveEvaluatorParameter.ValidValues
.OfType()
.Single();
ts.MoveEvaluator = moveEvaluator;
var moveMaker = ts.MoveMakerParameter.ValidValues
.OfType()
.Single();
ts.MoveMaker = moveMaker;
ts.SampleSize.Value = 1000;
ts.Seed.Value = 0;
ts.SetSeedRandomly.Value = true;
var tabuChecker = ts.TabuCheckerParameter.ValidValues
.OfType()
.Single();
tabuChecker.UseAspirationCriterion.Value = false;
ts.TabuChecker = tabuChecker;
var tabuMaker = ts.TabuMakerParameter.ValidValues
.OfType()
.Single();
ts.TabuMaker = tabuMaker;
ts.TabuTenure.Value = 6;
#endregion
ts.Engine = new ParallelEngine.ParallelEngine();
return ts;
}
}
}