/// <summary>
/// Returns the route of the given two towns.
/// </summary>
/// <param name="towns">The towns of the route.</param>
/// <returns>The route of the towns.</returns>
private Route GetRoute(TownTuple towns)
{
if (_routes.ContainsKey(towns))
{
return(_routes[towns]);
}
else
{
throw new NoSuchRouteException(towns);
}
}
public void ShouldCheckEquality()
{
// Arrange
var ab1 = new TownTuple(new Town('A'), new Town('B'));
var ab2 = new TownTuple(new Town('A'), new Town('B'));
var xy = new TownTuple(new Town('X'), new Town('Y'));
// Assert
Assert.AreEqual(ab1, ab2);
Assert.AreNotEqual(ab1, xy);
}
public void ShouldConstruct()
{
// Arrange
var item1 = new Town('A');
var item2 = new Town('B');
// Act
var tuple = new TownTuple(item1, item2);
// Assert
Assert.AreEqual(item1, tuple.Item1);
Assert.AreEqual(item2, tuple.Item2);
}
/// <summary>
/// Ctor.
/// </summary>
/// <param name="route">A route string in the format "AB5".</param>
public Route(string route)
{
ValidateString(route);
var item1 = new Town(route[0]);
var item2 = new Town(route[1]);
if (item1 == item2)
{
throw new MalformedEntityException("The route must be between two different towns.");
}
Towns = new TownTuple(item1, item2);
Distance = int.Parse(route[2].ToString());
}
/// <summary>
/// Ctor.
/// </summary>
/// <param name="townTuple">Route's towns.</param>
internal NoSuchRouteException(TownTuple towns) :
base("There isn't a route between towns " + towns.Item1 + " and " + towns.Item2)
{
}