How to host web api in memory? - asp.net-web-api

Question

I have web api controller and i want to perform an integration tests. So I followed the article here to configured the in-memory Web API host.
My integration test and web api are two different projects in same VS solution.
Below is the code
Web API Controller
public class DocumentController : ApiController
{
public DocumentController(IDomainService domainService)
{
_domainService = domainService;
}
[HttpPost]
public async Task<IEnumerable<string>> Update([FromBody]IEnumerable<Document> request)
{
return await _domainService.Update(request).ConfigureAwait(false);
}
}
Integration Test
[TestClass]
public class IntegrationTests
{
private HttpServer _server;
private string _url = "http://www.strathweb.com/";
[TestInitialize]
public void Init()
{
var config = new HttpConfiguration();
config.Routes.MapHttpRoute(name: "Default", routeTemplate: "api/{controller}/{action}/{id}", defaults: new { id = RouteParameter.Optional });
config.IncludeErrorDetailPolicy = IncludeErrorDetailPolicy.Always;
config.MessageHandlers.Add()
_server = new HttpServer(config);
}
[TestMethod]
public void UpdateTransformedDocuments()
{
var doc = new Document()
{
// set all properties
}
var client = new HttpClient(_server);
var request = createRequest<Document>("api/document/Update", "application/json", HttpMethod.Post, doc, new JsonMediaTypeFormatter());
using (var response = client.SendAsync(request).Result)
{
// do something with response here
}
}
private HttpRequestMessage createRequest<T>(string url, string mthv, HttpMethod method, T content, MediaTypeFormatter formatter) where T : class
{
Create HttpRequestMessage here
}
}
However im getting error
StatusCode: 404, ReasonPhrase: 'Not Found'
How & where do I tell the HttpServer to execute DocumentController?
Update1
So I fixed above error by changing the [TestIntialize] code as below
[TestInitialize]
public void Init()
{
var config = new HttpConfiguration();
UnityWebApiActivator.Start();
WebApiConfig.Register(config);
config.IncludeErrorDetailPolicy = IncludeErrorDetailPolicy.Always;
_server = new HttpServer(config);
}
I don't get 404 error now. However Unity is not able to resolve DocumentController. The HttpResponse contains error
An error occurred when trying to create a controller of type
'DocumentController'. Make sure that the controller has a
parameterless public constructor.
In TestInitialize method I'm calling UnityWebApiActivator.Start() which registers all the require types with Unity.

Answer 1

i resolved my 2nd issue by setting 'HttpConfiguration.DependencyResolver'
[TestInitialize]
public void Init()
{
var config = new HttpConfiguration();
//UnityWebApiActivator.Start();
config.DependencyResolver = new UnityHierarchicalDependencyResolver(UnityConfig.GetConfiguredContainer());
WebApiConfig.Register(config);
config.IncludeErrorDetailPolicy = IncludeErrorDetailPolicy.Always;
_server = new HttpServer(config);
}