public void CalculateSalaryDiscountForDBA()
        {
            var employee = new Employee()
            {
                Salary = 3000, Role = JobRoles.DBA
            };
            var salaryCalculator = new SalaryCalculator();
            var result           = salaryCalculator.CalculateSalaryAfterDiscount(employee);

            Assert.AreEqual(2550, result);
        }
        public void CalculateSalaryDiscountForDeveloper()
        {
            var employee = new Employee()
            {
                Salary = 3000, Role = JobRoles.DEVELOPER
            };
            var salaryCalculator = new SalaryCalculator();
            var result           = salaryCalculator.CalculateSalaryAfterDiscount(employee);

            Assert.AreEqual(2700.0, result);
        }