public void Calculate_WhenProvidedNull_ReturnsEmpty()
{
var calculator = new BenefitsWithDiscountsCalculator();
var result = calculator.Calculate(null);
result.ShouldBeEmpty();
}
public void Calculate_WhenProvidedEmployee_WithEmptyName_DoesNotReturnStandardBenefitDeduction()
{
var calculator = new BenefitsWithDiscountsCalculator();
var employee = new Employee();
var result = calculator.Calculate(employee).ToList();
result.ShouldBeEmpty();
}
public void Calculate_WhenProvidedEmployeesAndOrDependents_ReturnsExpectedTotal(Employee employee, decimal expectedTotal)
{
var calculator = new BenefitsWithDiscountsCalculator();
var result = calculator.Calculate(employee).ToList();
var actualTotal = result.Sum(x => x.PerAnnum);
actualTotal.ShouldEqual(expectedTotal);
}
public void Calculate_WhenEmployeeNotElegibleForLetterADiscount_DoesNotReturnNameDiscount()
{
var calculator = new BenefitsWithDiscountsCalculator();
var employee = new Employee
{
FirstName = "Bill"
};
var result = calculator.Calculate(employee).ToList();
var standardBenefit = result.FirstOrDefault(x => x.Description == BenefitsWithDiscountsCalculator.Descriptions.NameStartsWithADiscount);
standardBenefit.ShouldBeNull();
}
public void Calculate_WhenProvidedEmployee_WithNonEmptyName_ReturnsStandardBenefitDeduction()
{
var calculator = new BenefitsWithDiscountsCalculator();
var employee = new Employee
{
FirstName = "first",
LastName = "name"
};
var result = calculator.Calculate(employee).ToList();
var standardBenefit = result.FirstOrDefault(x => x.Description == BenefitsWithDiscountsCalculator.Descriptions.EmployeeStandardBenefitDeduction);
standardBenefit.ShouldNotBeNull();
}
public void Calculate_WhenEmployeeHasDependents_AndNamesAreEmpty_DoesNotReturnBenefitDeductionPerDependent()
{
var calculator = new BenefitsWithDiscountsCalculator();
var employee = new Employee
{
FirstName = "Bill",
Dependents = new List <Person>
{
new Person(),
new Person()
}
};
var result = calculator.Calculate(employee);
var dependentDeduction = result.Where(x => x.Description == BenefitsWithDiscountsCalculator.Descriptions.DependentStandardBenefitDeduction).ToList();
dependentDeduction.ShouldBeEmpty();
}
public void Calculate_WhenDependentElegibleForLetterADiscount_ReturnsNameDiscount()
{
var calculator = new BenefitsWithDiscountsCalculator();
var employee = new Employee
{
FirstName = "Bill",
Dependents = new List <Person>
{
new Person
{
FirstName = "Alice"
}
}
};
var result = calculator.Calculate(employee);
var nameDiscount = result.Where(x => x.Description == BenefitsWithDiscountsCalculator.Descriptions.NameStartsWithADiscount).ToList();
nameDiscount.ShouldNotBeNull();
}
public void Calculate_WhenEmployeeHasDependents_AndNamesAreNotEmpty_ReturnsBenefitDeductionPerDependent()
{
var calculator = new BenefitsWithDiscountsCalculator();
var employee = new Employee
{
FirstName = "Bill",
Dependents = new List <Person>
{
new Person {
FirstName = "John"
},
new Person {
FirstName = "Jill"
}
}
};
var result = calculator.Calculate(employee);
var dependentDeduction = result.Where(x => x.Description == BenefitsWithDiscountsCalculator.Descriptions.DependentStandardBenefitDeduction).ToList();
dependentDeduction.Count.ShouldEqual(employee.Dependents.Count);
}
public void Calculate_WhenNameStartsWithADiscountIsAvailable_ReturnsLineItemsWithCorrectTotal()
{
var calculator = new BenefitsWithDiscountsCalculator();
var employee = new Employee
{
FirstName = "Ann"
};
var result = calculator.Calculate(employee).ToList();
var expectedBenefitDeduction = -BenefitsWithDiscountsCalculator.EmployeeBenefitDeduction;
var expectedNameDiscountPerAnnum = expectedBenefitDeduction * BenefitsWithDiscountsCalculator.NameStartsWithLetterADiscountMultiplier;
var expectedNameDiscountPerPayPeriod = expectedNameDiscountPerAnnum.FromAnnumToPayPeriods(Constants.NumberOfPayPeriodsPerYear).ToList();
var nameDiscount = result.FirstOrDefault(x => x.Description == BenefitsWithDiscountsCalculator.Descriptions.NameStartsWithADiscount);
nameDiscount.PerAnnum.ShouldEqual(expectedNameDiscountPerAnnum);
nameDiscount.PerPayPeriod.Count.ShouldEqual(expectedNameDiscountPerPayPeriod.Count);
for (var i = 0; i < expectedNameDiscountPerPayPeriod.Count; i++)
{
nameDiscount.PerPayPeriod[i].ShouldEqual(expectedNameDiscountPerPayPeriod[i]);
}
}