public void CalculateMonthlyPremium_Throw_When_Age_Is_Greater_Than_150()
{
CalculatorParameter calculatorParameter = new CalculatorParameter {
Age = 151, DeathSumInsured = 10000
};
var ex = Assert.Throws <BusinessException>(() => _calculatorService.CalculateMonthlyPremium(calculatorParameter));
Assert.IsTrue(Constants.CALCULATOR_PARAMETER_AGE_RANGE_ERROR == ex.Message, "CalculateMonthlyPremium_Throw_When_Age_Is_Greater_Than_150 success");
}
public void CalculateMonthlyPremium_Throw_When_DeathSumInsured_Is_0()
{
CalculatorParameter calculatorParameter = new CalculatorParameter {
DeathSumInsured = 0
};
var ex = Assert.Throws <BusinessException>(() => _calculatorService.CalculateMonthlyPremium(calculatorParameter));
Assert.IsTrue(Constants.CALCULATOR_PARAMETER_DEATH_SUM_INSURED_NULL_ERROR == ex.Message, "CalculateMonthlyPremium_Throw_When_DeathSumInsured_Is_0 success");
}
public decimal?CalculateMonthlyPremium(CalculatorParameter calculatorParameter)
{
decimal?premium = null;
#region Business validations
if (calculatorParameter == null)
{
throw new BusinessException(Constants.CALCULATOR_PARAMETER_NULL_ERROR);
}
if (calculatorParameter.DeathSumInsured <= 0)
{
throw new BusinessException(Constants.CALCULATOR_PARAMETER_DEATH_SUM_INSURED_NULL_ERROR);
}
if (calculatorParameter.Age <= 0)
{
throw new BusinessException(Constants.CALCULATOR_PARAMETER_AGE_NULL_ERROR);
}
if (calculatorParameter.Age > 150)
{
throw new BusinessException(Constants.CALCULATOR_PARAMETER_AGE_RANGE_ERROR);
}
#endregion
// Get occupation details
Occupation occupation = _occupationService.GetOccupationByID(calculatorParameter.OccupationID);
premium = Math.Round(calculatorParameter.DeathSumInsured * occupation.RatingDetail.Factor * calculatorParameter.Age / 1000, 2);
// If unable to calculate premium for given parameters
if (!premium.HasValue)
{
throw new Exception(Constants.PREMIUM_NULL);
}
return(premium);
}
public ActionResult <decimal> Calculate(CalculatorParameter calculatorParameter)
{
decimal?monthlyPremium = _calculatorService.CalculateMonthlyPremium(calculatorParameter);
return(Ok(monthlyPremium));
}
