public void AllProblemNamesShouldMatchThatOfItemLoader()
{
// arrange
var loader = new SymmetricTspItemLoader(Helpers.LibPath);
var manager = new TspLibItemManager(Helpers.LibPath);
// assert
Assert.AreEqual(loader.ProblemNames, manager.AllProblemNames);
}
/// <summary>
/// Selects and loads symmetrical TSP problems with fewer than or equal to 100 nodes and
/// 2D coordinate sets. Automatically loads the first STSP instance available.
/// </summary>
/// <param name="tspLibPath">The directory path to the TSPLIB95 library.</param>
/// <exception cref="ArgumentException">Thrown if no TSP items were loaded.</exception>
public TspLibItemManager(string tspLibPath)
{
try
{
_itemLoader = new SymmetricTspItemLoader(tspLibPath);
var problemName = _itemLoader.ProblemNames.First();
LoadItem(problemName);
}
catch (ArgumentException e)
{
throw new ArgumentException("Could not load TSP items", e);
}
}
public void HasOptimalTourShouldMatchThatOfInfoProvider()
{
// arrange
const string problemName = "eil76";
var loader = new SymmetricTspItemLoader(Helpers.LibPath);
var item = loader.GetItem(problemName);
var infoProvider = new SymmetricTspItemInfoProvider(item);
var manager = new TspLibItemManager(Helpers.LibPath);
// act
manager.LoadItem(problemName);
// assert
Assert.AreEqual(infoProvider.HasOptimalTour, manager.HasOptimalTour);
}
public void DistancesShouldMatchThatOfInfoProvider()
{
// arrange
const string problemName = "eil76";
var loader = new SymmetricTspItemLoader(Helpers.LibPath);
var item = loader.GetItem(problemName);
var infoProvider = new SymmetricTspItemInfoProvider(item);
var manager = new TspLibItemManager(Helpers.LibPath);
// act
manager.LoadItem(problemName);
// assert
CollectionAssert.AreEqual(infoProvider.Distances, manager.Distances);
}
public void MinMaxCoordinatesShouldMatchThatOfInfoProvider()
{
// arrange
const string problemName = "eil76";
var loader = new SymmetricTspItemLoader(Helpers.LibPath);
var item = loader.GetItem(problemName);
var infoProvider = new SymmetricTspItemInfoProvider(item);
var manager = new TspLibItemManager(Helpers.LibPath);
// act
manager.LoadItem(problemName);
// assert
Assert.AreEqual(infoProvider.MaxXCoordinate, manager.MaxXCoordinate);
Assert.AreEqual(infoProvider.MaxYCoordinate, manager.MaxYCoordinate);
Assert.AreEqual(infoProvider.MinXCoordinate, manager.MinXCoordinate);
Assert.AreEqual(infoProvider.MinYCoordinate, manager.MinYCoordinate);
}