public void Test_HandlerException()
        {
            AutofacCommandHandlerFactory      factory = new AutofacCommandHandlerFactory();
            ICommandHandler <BeLeaderCommand> handler = factory.GetHandler <BeLeaderCommand>();

            handler.Execute(null);
        }
        public void Test_GetHandler()
        {
            AutofacCommandHandlerFactory      factory = new AutofacCommandHandlerFactory();
            ICommandHandler <BeLeaderCommand> handler = factory.GetHandler <BeLeaderCommand>();

            handler.ShouldNotBeNull();
            handler.ShouldBe <BeLeaderCommandHandler>();
        }