AttributeRouting not working with HttpConfiguration object for writing Integration tests

Question

I'm creating some integration tests following the ideas outlined here: http://www.strathweb.com/2012/06/asp-net-web-api-integration-testing-with-in-memory-hosting/ When I try to register routes from a hand crafted HttpConfiguration object I'm getting the following error: "The constraint entry 'inboundHttpMethod' on the route with route template 'api/Contacts/{id}' must have a string value or be of a type which implements 'IHttpRouteConstraint'." Sample code: Controller: ``` [RoutePrefix("api")] public class ContactsController : ApiController { [GET("Contacts/{id}",RouteName="GetContactsById")] public ContactDTO Get(int id) { return new ContactDTO{ ID =1, Name="test"}; } } } ``` TestClass (MSTest): ``` [TestClass] public class ContactsTest { private string _url = "http://myhost/api/"; private static HttpConfiguration config = null; private static HttpServer server = null; private HttpRequestMessage createRequest(string url, string mthv, HttpMethod method) { var request = new HttpReques…

Accepted Answer

Had the same problem. Found the answer here:

https://github.com/mccalltd/AttributeRouting/issues/191

You need to replace

```
AttributeRoutingHttpConfig.RegisterRoutes(config.Routes);
```

with

```
config.Routes.MapHttpAttributeRoutes(cfg =>
{
   cfg.InMemory = true;
   cfg.AutoGenerateRouteNames = true;
   cfg.AddRoutesFromAssemblyOf<ContactsController>();// Or some other reference...
});
```

I found I also needed the AutoGenerateRouteNames part, too.

AttributeRouting not working with HttpConfiguration object for writing Integration tests

Solution

Problem