Debugging a stand-alone WebApi application

Question

I have a WebApi application with the following controller:

public class ContentController : ApiController
{
    [HttpPost]
    public HttpResponseMessage Post(string contentType)
    {
        //do stuff
        return new HttpResponseMessage(HttpStatusCode.OK);
    }
}

The route is as follows:

routes.MapHttpRoute("content", 
    "api/content/{contentType}", 
    new { controller = "Content", contentType = RouteParameter.Optional });

When I host the service in IIS / cassini, if I send POST to api/content/whatever, then, as expected, my action with the controller is hit.

but

I have a test project that SelfHosts is an api

using (var client = new HttpClient(Server))
{
    var result = client.PostAsync(BaseAddress + "api/content/whatever"

    var message = result.Content.ReadAsStringAsync().Result;
}

If I debug unit test and go into it result:

{StatusCode: 500, ReasonPhrase: "Internal server error", Version: 1.1, Content: System.Net.Http.ObjectContent`1 [[System.Web.Http.HttpError, System.Web.Http, Version = 5.0.0.0, Culture = neutral, PublicKeyToken = 31bf3856ad364e35]], Headers: {Content-Type: application / json; encoding = UTF-8}}

Directly, messageliterally simple

An error has occurred

WebApi, , ?

Server - HttpServer , , , :

var httpConfig = new HttpSelfHostConfiguration(BaseAddress);

new ApiServiceConfiguration(httpConfig).Configure();

var server = new HttpSelfHostServer(httpConfig);
server.OpenAsync().Wait();
Server = server;

Answer 1

Trace.Listeners.Add(new ConsoleTraceListener()), . , , , , , .

Answer 2

Startup

config.IncludeErrorDetailPolicy = IncludeErrorDetailPolicy.Always;

config HttpConfiguration.

- .