Fixed unsupported media type error message in route testing (closes #160)

Author: ivaylokenov

src/MyWebApi.Tests/BuildersTests/RoutesTests/RoutesTestBuilderTests.cs

@@ -305,6 +305,27 @@ public void ToShouldThrowExceptionWithWrongActionArguments()
                     }));
         }
 
+        [Test]
+        [ExpectedException(
+            typeof(RouteAssertionException),
+            ExpectedMessage = "Expected route 'api/Route/PostMethodWithModel' to match PostMethodWithModel action in RouteController but it could not be resolved: 'Unsupported Media Type'.")]
+        public void ToShouldThrowExceptionWithUnsupportedMediaType()
+        {
+            MyWebApi
+                .Routes()
+                .ShouldMap("api/Route/PostMethodWithModel")
+                .WithHttpMethod(HttpMethod.Post)
+                .WithContent(
+                    @"{""Integer"": 1, ""RequiredString"": ""Test"", ""NonRequiredString"": ""AnotherTest"", ""NotValidateInteger"": 2}", MediaType.TextPlain)
+                .To<RouteController>(c => c.PostMethodWithModel(new RequestModel
+                {
+                    Integer = 1,
+                    RequiredString = "Test",
+                    NonRequiredString = "AnotherTest",
+                    NotValidateInteger = 2
+                }));
+        }
+
         [Test]
         public void ToNotAllowedMethodShouldWorkCorrectly()
         {

src/MyWebApi/Utilities/RouteResolvers/InternalRouteResolver.cs

@@ -77,6 +77,13 @@ public static ResolvedRouteInfo Resolve(HttpConfiguration config, HttpRequestMes
                     UnresolvedRouteFormat,
                     ex.Response.ReasonPhrase));
             }
+            catch (AggregateException ex)
+            {
+                var innerException = (HttpResponseException)ex.InnerExceptions.First();
+                resolvedRouteInfo = new ResolvedRouteInfo(string.Format(
+                    UnresolvedRouteFormat,
+                    innerException.Response.ReasonPhrase));
+            }
             catch (Exception ex)
             {
                 resolvedRouteInfo = new ResolvedRouteInfo(string.Format(