ShouldTestRoutes() uses MvcRouteTester.Mvc5.2

TestContextExtensions.cs

/// <summary>
/// Test context extensions: should test routes.
/// </summary>
/// <param name="context">The context.</param>
/// <param name="pathToJson">The path to json.</param>
public static void ShouldTestRoutes(this TestContext context, Type controllerType, string pathToJson)
{
    var routes = new RouteCollection();
    routes.MapAttributeRoutesInAssembly(controllerType);
    Assert.IsTrue(routes.Any(), "The expected attribute routes are not here.");

    context.ShouldFindFile(pathToJson);

    var json = File.ReadAllText(pathToJson);

    var definition = new[]
    {
        new
        {
            route = string.Empty,
            controller = string.Empty,
            action = string.Empty,
            isNonRoute = false
        }
    };

    var data = JsonConvert.DeserializeAnonymousType(json, definition);
    Assert.IsTrue(data.Any(), "The expected array of JSON data is not here.");

    data.Where(i => !i.isNonRoute).ForEachInEnumerable(i =>
    {
        var expected = new
        {
            controller = (string.IsNullOrEmpty(i.controller))?
                controllerType.Name.Replace("Controller", string.Empty)
                :
                i.controller,
            action = i.action
        };

        context.WriteLine("Testing route {0} to {1}.{2}...", i.route, expected.controller, i.action);
        RouteAssert.HasRoute(routes, i.route, expected);
    });

    data.Where(i => i.isNonRoute).ForEachInEnumerable(i =>
    {
        context.WriteLine("Testing non-route {0}...", i.route);
        RouteAssert.NoRoute(routes, i.route);
    });
}