[TestMethod]
        public void Insert_User_Than_Check_GetAll_Count_Test()
        {
            var actual = this.MockUserRepository.GetAll().Count + 1;
            var user = new User { Id = 4, FirstName = "User4", LastName = "User4LastName" };
            this.MockUserRepository.Insert(user);
            var expected = this.MockUserRepository.GetAll().Count;
            Assert.AreEqual(actual, expected);
        }