private List<TaxSlab> GetAppropriateTaxSlabs(User taxPayer)
{
if (taxPayer.IsFemale()){
return _femaleTaxSlabs;
}
return _maleTaxSlabs;
}
public void ShouldSaveAndLoadTaxStatement()
{
IRepository repository = new Repository();
var password = new Password { PasswordString = "abc" };
var email = new EmailAddress("*****@*****.**");
var taxPayer= new User(email, password);
taxPayer.FromMetro = true;
taxPayer.RentPaid = 8000.00;
AnnualSalary salary = new AnnualSalary() { Basic = 10000, Epf = 2000, Hra = 6000, Id = "salary", ProfessionalTax = 200, SpecialAllowance = 5000, TaxDedeuctedAtSource = 5000};
TaxStatement taxStatement = new TaxStatement(salary, taxPayer);
DonationsUnder80G donationsUnder80G = new DonationsUnder80G();
var halfExemptDonation = new HalfExemptDonation(20000);
donationsUnder80G.AddDonation(halfExemptDonation);
var fullyExemptDonation = new FullyExemptDonation(10000);
donationsUnder80G.AddDonation(fullyExemptDonation);
taxStatement.DonationsUnder80G = donationsUnder80G;
repository.Save(taxStatement);
List<TaxStatement> taxStatements = repository.LoadAll<TaxStatement>();
var loadedTaxStatement = taxStatements.FirstOrDefault(stmt => stmt.Id == taxStatement.Id);
Assert.IsNotNull(loadedTaxStatement);
Assert.IsNotNull(loadedTaxStatement.TaxPayer);
Assert.IsTrue(taxStatement.GetDonationsUnder80G().Contains(halfExemptDonation));
Assert.IsTrue(taxStatement.GetDonationsUnder80G().Contains(fullyExemptDonation));
}
public void MustCalculateNetPayableTaxWithAnnualSalaryOtherIncomesAndChapter6Investments()
{
var taxPayer = new User(50000, true, Gender.Female);
TaxSlabs ts = TaxSlabs.GetInstance();
AnnualSalary asal = new AnnualSalary
{
Basic = 810000.50,
Hra = 1000,
ProfessionalTax = 100,
SpecialAllowance = 10
};
OtherIncomes otherIncomes = new OtherIncomes();
otherIncomes.Add(new OtherIncomeItem("Income from Interest", 4000.0));
otherIncomes.Add(new OtherIncomeItem("Income from House Rent", 8000.0));
Chapter6Investments investments = new Chapter6Investments();
investments.Add(new LifeInsurance(50000));
investments.Add(new Elss(60000));
TaxStatement stmt = new TaxStatement(asal, taxPayer);
stmt.HousingLoanInterest = new HousingLoanInterest(10000);
stmt.OtherIncomes = otherIncomes;
stmt.Chapter6Investments = investments;
Assert.AreEqual(120473,
stmt.CalculateNetPayableTax(), 2);
}
private void ValidateTaxComponents(double taxableIncome, User taxPayer)
{
if (taxPayer == null)
throw new ArgumentException("Tax payer details not available");
if (taxableIncome <= 0)
throw new ArgumentException("Invalid taxable income");
}
public void ShouldNotRegisterUserIfNotUnique()
{
var repository = new Mock<IRepository>();
var password = new Password {PasswordString = "abc"};
var user = new User(new EmailAddress("*****@*****.**"), password, repository.Object);
repository.Setup(rep => rep.LoadByEmailId(user.EmailAddress)).Returns(user);
Assert.Throws<DuplicateUserException>(user.Register);
}
public void ShouldCalculateHraExemption()
{
var taxPayer = new User(50000, true, Gender.Male);
var annualSalary = new AnnualSalary
{
Basic = 100000,
Hra = 40000,
ProfessionalTax = 100,
SpecialAllowance = 10
};
Assert.AreEqual(40000, annualSalary.CalculateHraExemption(taxPayer.FromMetro, taxPayer.RentPaid));
}
public void ShouldRegisterUserIfUnique()
{
var repository = new Mock<IRepository>();
var password = new Password {PasswordString = "abc"};
var user = new User(new EmailAddress("*****@*****.**"), password, repository.Object);
repository.Setup(rep => rep.LoadByEmailId(user.EmailAddress)).Returns(() => (User) null);
repository.Setup(rep => rep.Save(user));
user.Register();
repository.VerifyAll();
}
public double ComputeTax(double taxableIncome, User taxPayer)
{
ValidateTaxComponents(taxableIncome, taxPayer);
var slabsInUse = GetAppropriateTaxSlabs(taxPayer);
var tax = 0.00;
foreach (var slab in slabsInUse){
tax += slab.GetTax(taxableIncome);
taxableIncome = taxableIncome - slab.SlabValue;
if (taxableIncome <= 0)
break;
}
return tax;
}
public void MustCalculateNetPayableTaxWithAnnualSalaryAndDeductions()
{
var taxPayer = new User(0, true, Gender.Female);
TaxSlabs ts = TaxSlabs.GetInstance();
AnnualSalary asal = new AnnualSalary
{
Basic = 600000,
Hra = 100000
};
TaxStatement stmt = new TaxStatement(asal,taxPayer);
DonationsUnder80G donationsUnder80G = new DonationsUnder80G();
donationsUnder80G.AddDonation(new FullyExemptDonation(1000));
stmt.DonationsUnder80G = donationsUnder80G;
Assert.AreEqual(116700.0, stmt.CalculateNetPayableTax(),0.01);
}
public void ComputeTaxShouldDeductTDSValueFromTheNetTaxPayableValue()
{
var taxPayer = new User(50000, true, Gender.Female);
TaxSlabs ts = TaxSlabs.GetInstance();
AnnualSalary asal = new AnnualSalary
{
Basic = 200000.50,
Hra = 1000,
ProfessionalTax = 100,
SpecialAllowance = 10,
TaxDedeuctedAtSource = 1000
};
TaxStatement stmt = new TaxStatement(asal, taxPayer);
Assert.AreEqual(891.04,stmt.CalculateNetPayableTax(), 2);
}
public void MustCalculateNetPayableTaxWithAnnualSalaryAndOtherIncomes()
{
var taxPayer = new User(50000, true, Gender.Female);
TaxSlabs ts = TaxSlabs.GetInstance();
AnnualSalary asal = new AnnualSalary
{
Basic = 200000.50,
Hra = 1000,
ProfessionalTax = 100,
SpecialAllowance = 10
};
TaxStatement stmt = new TaxStatement(asal,taxPayer);
OtherIncomes otherIncomes = new OtherIncomes();
otherIncomes.Add(new OtherIncomeItem("Income from Interest", 4000.0));
otherIncomes.Add(new OtherIncomeItem("Income from House Rent", 8000.0));
stmt.OtherIncomes = otherIncomes;
double totalIncome = asal.GetTaxableSalary() + otherIncomes.CalculateTotalAmount();
Assert.AreEqual(3091,
stmt.CalculateNetPayableTax(),2);
}
public void MustCalculateNetPayableTaxWithAnnualSalaryOtherIncomesAndChapter6Investments()
{
var taxPayer = new User(50000, true, Gender.Female);
TaxSlabs ts = TaxSlabs.GetInstance();
AnnualSalary asal = new AnnualSalary
{
Basic = 800000.50,
Hra = 1000,
ProfessionalTax = 100,
SpecialAllowance = 10
};
OtherIncomes otherIncomes = new OtherIncomes();
otherIncomes.Add(new OtherIncomeItem("Income from Interest", 4000.0));
otherIncomes.Add(new OtherIncomeItem("Income from House Rent", 8000.0));
Chapter6Investments investments = new Chapter6Investments();
investments.Add(new LifeInsurance(50000));
investments.Add(new Elss(60000));
TaxStatement stmt = new TaxStatement(asal,taxPayer);
stmt.OtherIncomes = otherIncomes;
stmt.Chapter6Investments = investments;
double totalIncome = ((asal.GetTaxableSalary() + otherIncomes.CalculateTotalAmount())
-
(asal.CalculateHraExemption(taxPayer.FromMetro, taxPayer.RentPaid)));
double totalInvestments = (asal.Epf + investments.GetTotal());
totalIncome -= totalInvestments <= Chapter6Investments.Cap
? totalInvestments
: Chapter6Investments.Cap;
Assert.AreEqual(120473,
stmt.CalculateNetPayableTax(),2);
}
public void MustCalculateNetPayableTaxWithOnlyAnnualSalary()
{
var taxPayer = new User(50000, true, Gender.Female);
TaxSlabs ts = TaxSlabs.GetInstance();
AnnualSalary asal = new AnnualSalary
{
Basic = 200000.50,
Hra = 1000,
ProfessionalTax = 100,
SpecialAllowance = 10
};
TaxStatement stmt = new TaxStatement(asal,taxPayer);
Assert.AreEqual(1891.05d, stmt.CalculateNetPayableTax());
}
public TaxStatement(AnnualSalary annualSalary, User taxPayer)
{
AnnualSalary = annualSalary;
TaxPayer = taxPayer;
}
public void ShouldBeAbleToGetRentPaid()
{
var taxPayer = new User(50000, true, Gender.Male);
Assert.AreEqual(50000, taxPayer.RentPaid);
}
public void ShouldSaveTheInvestmentAlongWithTaxStatement()
{
var taxPayer = new User(0, true, Gender.Female);
TaxSlabs ts = TaxSlabs.GetInstance();
AnnualSalary asal = new AnnualSalary
{
Basic = 600000,
Hra = 100000
};
TaxStatement stmt = new TaxStatement(asal, taxPayer);
stmt.Chapter6Investments= new Chapter6Investments();
LifeInsurance LICInvestment=new LifeInsurance(10000);
stmt.Chapter6Investments.Add(LICInvestment);
LICInvestment.TaxStatement = stmt;
Repository taxStatementRepo=new Repository();
taxStatementRepo.Save(stmt);
Assert.AreEqual(LICInvestment.GetAmount(), taxStatementRepo.GetInvestmentDetails(stmt.Id).GetAmount());
}
public void ShouldReturnRemtPaidAdjustedToBasicAsHraExemptionWhenItIsMinimumOfAllTaxComponents()
{
var taxPayer = new User(30000, true, Gender.Male);
var annualSalary = new AnnualSalary
{
Basic = 100000,
Hra = 60000,
ProfessionalTax = 100,
SpecialAllowance = 10
};
Assert.AreEqual(20000, annualSalary.CalculateHraExemption(taxPayer.FromMetro, taxPayer.RentPaid));
}
public void ShouldBeAbleToCheckIfTaxPayeeIsFromMetro()
{
var taxPayer = new User(50000, true, Gender.Male);
Assert.True(taxPayer.FromMetro);
}
private double CalculateGrossIncome(User taxPayer)
{
double retAmt = AnnualSalary.GetTaxableSalary();
retAmt -= GetHousingLoanInterestAmount();
if (OtherIncomes != null)
retAmt += OtherIncomes.CalculateTotalAmount();
retAmt -= (AnnualSalary.CalculateHraExemption(taxPayer.FromMetro, taxPayer.RentPaid) +
AnnualSalary.ProfessionalTax);
retAmt -= DonationsUnder80G.GetDeduction();
return retAmt;
}
public void ShouldReturnFortyPercentageOfBasicAsHraExemptionWhenItIsMinimumOfAllTaxComponentsAndPayerIsFromMetro()
{
var taxPayer = new User(65000, false, Gender.Male);
var annualSalary = new AnnualSalary
{
Basic = 100000,
Hra = 60000,
ProfessionalTax = 100,
SpecialAllowance = 10
};
Assert.AreEqual(40000, annualSalary.CalculateHraExemption(taxPayer.FromMetro, taxPayer.RentPaid));
}
public void ShouldNotCalculateHraExemptionIfHraComponentIsNotAvailable()
{
var taxPayer = new User(30000, true, Gender.Male);
var annualSalary = new AnnualSalary
{
Basic = 100000,
Hra = 0,
ProfessionalTax = 100,
SpecialAllowance = 10
};
Assert.Throws<Exception>(() => annualSalary.CalculateHraExemption(taxPayer.FromMetro, taxPayer.RentPaid));
}
public void ShouldSaveAndLoadUser()
{
IRepository repository = new Repository();
var password = new Password { PasswordString = "abc" };
var email = new EmailAddress("*****@*****.**");
var user = new User(email, password);
user.FromMetro = true;
user.RentPaid = 8000.00;
user.Repository = repository;
user.Register();
User actualUser = repository.LoadByEmailId(email);
Assert.IsNotNull(actualUser);
Assert.AreEqual(email, actualUser.EmailAddress);
Assert.AreEqual(user.FromMetro, actualUser.FromMetro);
Assert.AreEqual(user.RentPaid, actualUser.RentPaid);
}
public void ShouldReturnTrueIfTaxPayerIsFemale()
{
User taxPayer = new User(0, false, Gender.Female);
Assert.True(taxPayer.IsFemale());
}
