我在ASP.NET MVC中单元测试我的路线2.我正在使用MSTest，我也在使用区域。
[TestClass]
public class RouteRegistrarTests
{
[ClassInitialize]
public static void ClassInitialize(TestContext testContext)
{
RouteTable.Routes.Clear();
RouteTable.Routes.IgnoreRoute("{resource}.axd/{*pathInfo}");
RouteTable.Routes.IgnoreRoute("{*favicon}",new { favicon = @"(.*/)?favicon.ico(/.*)?" });
AreaRegistration.RegisterAllAreas();
routes.MapRoute(
"default","{controller}/{action}/{id}",new { controller = "Home",action = "Index",id = UrlParameter.Optional }
);
}
[TestMethod]
public void RouteMaps_VerifyMappings_Match()
{
"~/".Route().ShouldMapTo<HomeController>(n => n.Index());
}
}
当它执行AreaRegistration.RegisterAllAreas()但是，它抛出这个异常：
System.InvalidOperationException：System.InvalidOperationException：在应用程序的初始化初始化阶段期间无法调用此方法。
所以，我估计我不能从我的类初始化程序调用它。但是什么时候可以叫它？我显然没有一个Application_Start在我的测试。
解决方法
我通过创建一个我的AreaRegistration类的实例并调用RegisterArea方法来解决这个问题。
例如，给定一个名为“目录”的区域与此路线：
public override void RegisterArea(AreaRegistrationContext context)
{
context.MapRoute(
"Catalog_default","Catalog/{controller}/{action}/{id}",new {controller = "List",id = "" }
);
}
这是我的测试方法：
[TestMethod]
public void TestCatalogAreaRoute()
{
var routes = new RouteCollection();
// Get my AreaRegistration class
var areaRegistration = new CatalogAreaRegistration();
Assert.AreEqual("Catalog",areaRegistration.AreaName);
// Get an AreaRegistrationContext for my class. Give it an empty RouteCollection
var areaRegistrationContext = new AreaRegistrationContext(areaRegistration.AreaName,routes);
areaRegistration.RegisterArea(areaRegistrationContext);
// Mock up an HttpContext object with my test path (using Moq)
var context = new Mock<HttpContextBase>();
context.Setup(c => c.Request.AppRelativeCurrentExecutionFilePath).Returns("~/Catalog");
// Get the RouteData based on the HttpContext
var routeData = routes.GetRouteData(context.Object);
Assert.IsNotNull(routeData,"Should have found the route");
Assert.AreEqual("Catalog",routeData.DataTokens["area"]);
Assert.AreEqual("List",routeData.Values["controller"]);
Assert.AreEqual("Index",routeData.Values["action"]);
Assert.AreEqual("",routeData.Values["id"]);
}
