public void AddEmployee() { Employee newEmployee = new Employee(); newEmployee.FirstName = "Santoshkumar"; newEmployee.LastName = "Krishnamurthy"; newEmployee.ManagerID = 5; int IdForNeEmployee = EmployeesRepository.EmployeesList.OrderByDescending(emp => emp.Id).First().Id; EmployeeRepo.AddEmployees(newEmployee); var EmployeAdded = EmployeesRepository.EmployeesList.OrderByDescending(emp => emp.Id).First(); newEmployee.Id = ++IdForNeEmployee; Assert.AreEqual(newEmployee, EmployeAdded); }