Fixes when T is not the implementor (i.e. interface) on json serialization

Author: csmir

src/Commands.Http/Commands.Http/Execution/HttpCommandContext.cs

@@ -121,7 +121,14 @@ public virtual void Respond(IHttpResult result)
             }
             else
             {
-                var jsonBytes = Response.ContentEncoding.GetBytes(JsonSerializer.Serialize(result.Content, result.Content.GetType(), _services.GetService<JsonSerializerOptions>()));
+                string serializationResult;
+
+                if (result.Content is Tuple<Type, object> objectReferredByT)
+                    serializationResult = JsonSerializer.Serialize(objectReferredByT.Item2, objectReferredByT.Item1, _services.GetService<JsonSerializerOptions>());
+                else
+                    serializationResult = JsonSerializer.Serialize(result.Content, result.Content.GetType(), _services.GetService<JsonSerializerOptions>());
+
+                var jsonBytes = Response.ContentEncoding.GetBytes(serializationResult);
 
                 Response.ContentLength64 = jsonBytes.Length;
 

src/Commands.Http/Commands.Http/Results/HttpResult.cs

@@ -87,11 +87,11 @@ public override string ToString()
     /// <param name="content">The response to send.</param>
     /// <param name="statusCode">The status code of the response.</param>
     /// <returns>A new instance of <see cref="HttpResult"/> containing the values to be served to the caller invoking this operation.</returns>
-    public static HttpResult Json(object content, HttpStatusCode statusCode = HttpStatusCode.OK)
+    public static HttpResult Json<T>([DisallowNull] T content, HttpStatusCode statusCode = HttpStatusCode.OK)
     {
         Assert.NotNull(content, nameof(content));
 
-        return new(statusCode, content, "application/json");
+        return new(statusCode, new Tuple<Type, object>(typeof(T), content), "application/json");
     }
 
     /// <summary>