public void CheckLoginTest()
        {
            var controller = new ManagerController();
            var manager    = new Manager
            {
                Id       = 1,
                Name     = "Efe",
                Surname  = "Mayoğlu",
                Password = "******",
                UserName = "******"
            };

            controller.Post(manager);

            var check = controller.CheckLogin("efemayoglu", "1234");

            Assert.IsNotNull(check);
        }