SignalRHubConventionTest.cs

using System;
using System.Collections.Generic;
using System.Linq;
using Microsoft.AspNet.SignalR;

namespace SignalRHubConvetionTest
{
    class GoodHub : Hub
    {
    }
    class BadHub : Hub
    {
        public string Method(string heh)
        {
            return "A";
        }
        public string Method(int heh)
        {
            return "A";
        }
        public string Method(int heh, string hehe)
        {
            return "A";
        }
    }
    class Program
    {
        static void Main(string[] args)
        {
            var failedHubs = Test();
            foreach (var hub in failedHubs)
            {
              Console.WriteLine(hub.Name);   
            }
            Console.WriteLine(!failedHubs.Any() ? "Test OK" : "Test Failed");
        }

        static IEnumerable<Type> Test()
        {
            var hubs = AppDomain
                        .CurrentDomain
                        .GetAssemblies()
                        .SelectMany(domainAssembly => 
                             domainAssembly
                                .GetTypes()
                                .Where(assemblyType => 
                                    typeof(Microsoft.AspNet.SignalR.Hub).IsAssignableFrom(assemblyType))
                        );

            return hubs.Where(hub => 
                                hub.GetMethods()
                                    .GroupBy(method => method.GetParameters().Count() + method.Name)
                                    .Any(grouping => grouping.Count() > 1)
                        );
                        
        }
    }
}