Test if a request's URL is in the Route table

Question

I want to test if a URL is part of the routes defined in the Global.asax. This is what I have:

var TheRequest = HttpContext.Current.Request.Url.         


        

Answer 1

You could try checking the current context against route table

var contextBase = HttpContext.Current.Request.RequestContext.HttpContext;
var data = RouteTable.Routes.GetRouteData(contextBase);
if (data != null) {
    //Route exists
}

Using the above as a basis of creating a service

public interface IRouteInspector {
    bool RequestIsInRoutes();
}

public interface IHttpContextAccessor {
    HttpContextBase HttpContext { get; }
}

public interface IRouteTable {
    RouteCollection Routes { get; }
}

public class RouteInspector : IRouteInspector {
    private IRouteTable routeTable;
    private IHttpContextAccessor contextBase;

    public RouteInspector(IRouteTable routeTable, IHttpContextAccessor contextBase) {
        this.routeTable = routeTable;
        this.contextBase = contextBase;
    }

    public bool RequestIsInRoutes() {
        if (routeTable.Routes.GetRouteData(contextBase.HttpContext) != null) {
            //Route exists
            return true;
        }
        return false;
    }
}

And here is test class showing how it is used.

[TestClass]
public class RouteTableUnitTests : ControllerUnitTests {
    [TestMethod]
    public void Should_Get_Request_From_Route_Table() {
        //Arrange                
        var contextBase = new Mock();
        contextBase.Setup(m => m.HttpContext)
            .Returns(HttpContext.Current.Request.RequestContext.HttpContext);
        var routeTable = new Mock();
        routeTable.Setup(m => m.Routes).Returns(RouteTable.Routes);
        var sut = new RouteInspector(routeTable.Object, contextBase.Object);
        //Act
        var actual = sut.RequestIsInRoutes();
        //Assert
        Assert.IsTrue(actual);
    }
}

There is room for refactoring and improvements but it's a start.