public void AddRoute_ShouldRegisterRoutes()
{
// Arrange
var townA = new Town("A");
var townB = new Town("B");
var townC = new Town("C");
var route1 = new Route(townA, townC, 1);
var route2 = new Route(townA, townB, 2);
// Act
townA.AddRoute(route1);
townA.AddRoute(route2);
// Assert
Assert.True(townA.Routes.SequenceEqual(new[] { route1, route2 }));
}
public void AddRoute_WhenOriginIsNotSameTown_ShouldThrowInconsistentRouteException()
{
// Arrange
var townA = new Town("A");
var townB = new Town("B");
var townC = new Town("C");
var route = new Route(townB, townC, 1);
// Act and assert
Assert.Throws <InconsistentRouteException>(() => townA.AddRoute(route));
}
public void GetRoute_WhenThereIsNoRouteToTheExpectedTown_ShouldReturnInvalidRouteException()
{
// Arrange
var townA = new Town("A");
var townB = new Town("B");
var townC = new Town("C");
var expectedRoute = new Route(townA, townC, 1);
townA.AddRoute(expectedRoute);
// Act and assert
Assert.Throws <InvalidRouteException>(() => townA.GetRoute(townB));
}
public void Adding_Route_Between_Two_Towns_Should_Add_Route()
{
var townA = new Town {
Name = "A"
};
var townB = new Town {
Name = "B"
};
townA.AddRoute(townB, 10);
Assert.AreEqual(1, townA.Routes.Count);
}
public TripServiceUnitTests()
{
var townA = new Town("A");
Railway.AddTown(townA);
var townB = new Town("B");
Railway.AddTown(townB);
var townC = new Town("C");
Railway.AddTown(townC);
var townD = new Town("D");
Railway.AddTown(townD);
var townE = new Town("E");
Railway.AddTown(townE);
// AB5
townA.AddRoute(new Route(townA, townB, 5));
// BC4
townB.AddRoute(new Route(townB, townC, 4));
// CD8
townC.AddRoute(new Route(townC, townD, 8));
// DC8
townD.AddRoute(new Route(townD, townC, 8));
// DE6
townD.AddRoute(new Route(townD, townE, 6));
// AD5
townA.AddRoute(new Route(townA, townD, 5));
// CE2
townC.AddRoute(new Route(townC, townE, 2));
// EB3
townE.AddRoute(new Route(townE, townB, 3));
// AE7
townA.AddRoute(new Route(townA, townE, 7));
}
public void GetRoute_ShouldReturnExpectedRoute()
{
// Arrange
var townA = new Town("A");
var townC = new Town("C");
var expectedRoute = new Route(townA, townC, 1);
townA.AddRoute(expectedRoute);
// Act
var route = townA.GetRoute(townC);
// Assert
Assert.True(route.Equals(expectedRoute));
}
public void Retrievieng_Route_That_Does_Not_Exists_Should_Return_Null()
{
var townA = new Town {
Name = "A"
};
var townB = new Town {
Name = "B"
};
townA.AddRoute(townB, 10);
var route = townA.GetRouteTo("C");
Assert.IsNull(route);
}
public void Retrievieng_Route_That_Already_Exists_Should_Return_The_Route()
{
var townA = new Town {
Name = "A"
};
var townB = new Town {
Name = "B"
};
townA.AddRoute(townB, 10);
var route = townA.GetRouteTo("B");
Assert.AreEqual("B", route.Destination.Name);
Assert.AreEqual(10, route.Distance);
}
public void CloneIfEquals_WhenTownsAreSame_ShouldClone_PreservingName()
{
// Arrange
var townA = new Town("A");
var otherTownA = new Town("A");
var townB = new Town("B");
var route = new Route(townA, townB, 1);
townA.AddRoute(route);
// Act
var result = townA.CloneIfEquals(otherTownA, out var cloned);
// Assert
Assert.True(result);
Assert.False(ReferenceEquals(townA, cloned));
Assert.Equal(cloned.Name, townA.Name);
Assert.True(cloned.Routes.SequenceEqual(new [] { route }));
}
/// <summary>
/// Clones a given <see cref="Town"/> instance if they are equals.
/// </summary>
/// <param name="town">The instance of the <see cref="Town"/>.</param>
/// <param name="other">The other instance of the <see cref="Town"/> to compare.</param>
/// <param name="clone">An output var with the cloned <see cref="Town"/>.</param>
/// <param name="newName">(optional) An <see cref="string"/> representing a new name for the cloned <see cref="Town"/>.</param>
/// <returns><c>True</c> if the <paramref name="town"/> and <paramref name="other"/> are equals; Otherwise, <c>false</c>.</returns>
public static bool CloneIfEquals(this ITown town, ITown other, out ITown clone, string newName = "")
{
clone = town;
if (!town.Equals(other))
{
return(false);
}
var routes = town.Routes;
newName = string.IsNullOrWhiteSpace(newName) ? town.Name : newName;
var cloneTown = new Town(newName);
foreach (var route in routes)
{
var cloneRoute = new Route(cloneTown, route.To, route.Distance);
cloneTown.AddRoute(cloneRoute);
}
clone = cloneTown;
return(true);
}
