public void ShouldBeAbleToCalculateTaxGivenABuyStackAndSellStackWithMultipleValues()
{
Instrument share = new Stock(new Symbol("REL"), new Price(10.00), "Rel*iance Power");
Transaction buyTransaction1 = new BuyTransaction(new DateTime(2008, 06, 01), share, 20, new Price(10.00), 5.00, 3.00);
Transaction sellTransaction1 = new SellTransaction(new DateTime(2009, 01, 01), share, 10, new Price(20.00), 5.00, 3.00);
Transaction buyTransaction2 = new BuyTransaction(new DateTime(2008, 12, 01), share, 10, new Price(10.00), 5.00, 3.00);
Transaction sellTransaction2 = new SellTransaction(new DateTime(2009, 08, 01), share, 10, new Price(20.00), 5.00, 3.00);
List<Transaction> listTransaction = new List<Transaction> { buyTransaction1, sellTransaction1, buyTransaction2, sellTransaction2 };
ShortTermTaxCalculator TaxCalculator = new ShortTermTaxCalculator(listTransaction, new FinYear(2009));
Stack buyStack = TaxCalculator.CreateBuyTransactionStack();
Stack sellStack = TaxCalculator.CreateSellTransactionStack();
Assert.AreEqual(2, buyStack.Count);
Assert.AreEqual(2, sellStack.Count);
Price Tax;
Tax = TaxCalculator.CalculateTaxOverTheBuyAndSellStacks(buyStack, sellStack);
// Assert.AreEqual(0, buyStack.Count);
// Assert.AreEqual(0, sellStack.Count);
Assert.AreEqual(20, Tax.Value);
}
public void ShouldBeAbleToCalculateShortTermTaxForOneBuyAndSell()
{
Instrument share = new Stock(new Symbol("REL"), new Price(10.00), "Reliance Power");
BuyTransaction buyTransaction = new BuyTransaction(new DateTime(2008, 06, 01), share, 10, new Price(10.00), 5.00, 3.00);
SellTransaction sellTransaction = new SellTransaction(new DateTime(2008, 12, 01), share, 10, new Price(20.00), 5.00, 3.00);
Price price = new ShortTermTaxCalculator(null, new FinYear(2009)).CalculateShortTermTaxForAPairOfTransactions(buyTransaction, sellTransaction);
Assert.AreEqual(20, price.Value);
}
public virtual Price CalculateShortTermTax(BuyTransaction buyTransaction)
{
if (IsShortTerm(buyTransaction))
{
double profitOrLoss = CalculateTotalPrice(this.UnitPrice, this.Quantity) -
CalculateTotalPrice(buyTransaction.UnitPrice, buyTransaction.Quantity);
if(profitOrLoss>0)
{
return new Price(0.20*profitOrLoss);
}
}
return new Price(0);
}
public void TestListTransactionsByInstrumentId()
{
var hundredRuppees = new Price(100);
var relianceMutuals = new Symbol("RELTICK");
Instrument instrument = new MutualFund(relianceMutuals, hundredRuppees, "Test Fund", "SUNMF", "SUN Magma", "Growth");
repository.Save(instrument);
Transaction buyTransaction = new BuyTransaction(DateTime.Now, instrument, 10, new Price(1000), 100, 100);
repository.Save(buyTransaction);
IList<Transaction> translist=repository.ListTransactionsByInstrumentId<Transaction>(instrument.Id);
Assert.AreEqual(1,repository.ListTransactionsByInstrumentId<Transaction>(instrument.Id).Count);
}
public void ShouldIncludeUnitDividendWhileGettingCurrentMarketValueOfInstrument()
{
Instrument instrument = new MutualFund(new Symbol("RILMF"), new Price(100.00), "Reliance Mutual Fund", "SUNMF", "SUN Magma", "Growth");
Transaction transaction1 = new BuyTransaction(new DateTime(2009, 09, 09), instrument, 10, new Price(100.00), 10, 10);
Transaction transaction2 = new SellTransaction(new DateTime(2009, 09, 10), instrument, 5, new Price(200.00), 10, 10);
Transaction transaction3 = new UnitDividendTransaction(instrument, 5, new DateTime(2009, 09, 10));
List<Transaction> listTransaction = new List<Transaction>();
listTransaction.Add(transaction1);
listTransaction.Add(transaction2);
Assert.AreEqual(500.00, instrument.CurrentMarketValue(listTransaction).Value);
listTransaction.Add(transaction3);
Assert.AreEqual(1000.00, instrument.CurrentMarketValue(listTransaction).Value);
}
public Price CalculateTaxOverTheBuyAndSellStacks(Stack buyStack, Stack sellStack)
{
BuyTransaction buy;
SellTransaction sell;
Price shortTermTax = new Price(0);
while (buyStack.Count > 0 && sellStack.Count > 0)
{
buy = (BuyTransaction)buyStack.Pop();
sell = (SellTransaction)sellStack.Pop();
if (buy.Quantity.Equals(sell.Quantity))
{
shortTermTax += sell.CalculateShortTermTax(buy);
}
else
if (buy.Quantity > sell.Quantity)
{
BuyTransaction buyTransactionIntoStack = new BuyTransaction(buy.Date, buy.Instrument, buy.Quantity - sell.Quantity, buy.UnitPrice, buy.Tax, buy.Brokerage);
buyStack.Push(buyTransactionIntoStack);
shortTermTax += sell.CalculateShortTermTax(new BuyTransaction(buy.Date, buy.Instrument, sell.Quantity, buy.UnitPrice, buy.Tax, buy.Brokerage));
}
else
{
SellTransaction sellTransactionIntoStack = new SellTransaction(buy.Date, buy.Instrument, sell.Quantity - buy.Quantity, buy.UnitPrice, buy.Tax, buy.Brokerage);
sellStack.Push(sellTransactionIntoStack);
sell.Quantity = buy.Quantity;
shortTermTax += sell.CalculateShortTermTax(new BuyTransaction(buy.Date, buy.Instrument, sell.Quantity, buy.UnitPrice, buy.Tax, buy.Brokerage));
}
}
return shortTermTax;
}
public void ShouldGetSTCGForTheListOfValidTransactions()
{
Instrument share = new Stock(new Symbol("REL"), new Price(10.00), "Rel*iance Power");
Transaction buyTransaction1 = new BuyTransaction(new DateTime(2005, 06, 01), share, 20, new Price(10.00), 5.00, 3.00);
Transaction sellTransaction1 = new SellTransaction(new DateTime(2006, 01, 01), share, 10, new Price(20.00), 5.00, 3.00);
Transaction buyTransaction2 = new BuyTransaction(new DateTime(2006, 12, 01), share, 10, new Price(30.00), 5.00, 3.00);
Transaction sellTransaction2 = new SellTransaction(new DateTime(2007, 08, 01), share, 10, new Price(50.00), 5.00, 3.00);
// The balance at end of this should be a Buy with 10 shares left.
// These transactions below will not be considered.
// Transaction buyTransaction8 = new BuyTransaction(new DateTime(2008, 06, 01), share, 10, new Price(10.00), 5.00, 3.00);
Transaction buyTransaction3 = new BuyTransaction(new DateTime(2008, 06, 01), share, 20, new Price(10.00), 5.00, 3.00);
Transaction sellTransaction3 = new SellTransaction(new DateTime(2009, 01, 01), share, 10, new Price(20.00), 5.00, 3.00);
Transaction buyTransaction4 = new BuyTransaction(new DateTime(2008, 12, 01), share, 10, new Price(10.00), 5.00, 3.00);
Transaction sellTransaction4 = new SellTransaction(new DateTime(2009, 08, 01), share, 10, new Price(20.00), 5.00, 3.00);
List<Transaction> listTransaction = new List<Transaction> { buyTransaction1, sellTransaction1, buyTransaction2, sellTransaction2,buyTransaction3, sellTransaction3, buyTransaction4, sellTransaction4 };
ShortTermTaxCalculator TaxCalculator = new ShortTermTaxCalculator(listTransaction, new FinYear(2009));
Price Tax = TaxCalculator.CalculateShortTermTax();
Assert.AreEqual(20, Tax.Value);
}
public void ShouldCreateStackOfSellTransactionsGivenAListOfTransactions()
{
Instrument share = new Stock(new Symbol("REL"), new Price(10.00), "Reliance Power");
Transaction buyTransaction1 = new BuyTransaction(new DateTime(2008, 06, 01), share, 10, new Price(10.00), 5.00, 3.00);
Transaction sellTransaction1 = new SellTransaction(new DateTime(2008, 12, 01), share, 2, new Price(20.00), 5.00, 3.00);
Transaction buyTransaction2 = new BuyTransaction(new DateTime(2009, 06, 01), share, 12, new Price(50.00), 5.00, 3.00);
Transaction sellTransaction2 = new SellTransaction(new DateTime(2009, 12, 01), share, 20, new Price(100.00), 5.00, 3.00);
List<Transaction> listTransaction = new List<Transaction> { buyTransaction1, sellTransaction1, buyTransaction2, sellTransaction2 };
Stack sellStack = new ShortTermTaxCalculator(listTransaction, new FinYear(2009)).CreateSellTransactionStack();
Assert.AreEqual(2, sellStack.Count);
Assert.AreEqual(sellTransaction1, sellStack.Pop());
Assert.AreEqual(sellTransaction2, sellStack.Pop());
}
public void ShouldBeAbleToCreateATransactionShowingRemainingQuantityOfInstrumentForAllBuyAndSellBeforeOneYearPriorToTaxCalculationYear()
{
Instrument share = new Stock(new Symbol("REL"), new Price(10.00), "Rel*iance Power");
Transaction buyTransaction1 = new BuyTransaction(new DateTime(2005, 06, 01), share, 20, new Price(10.00), 5.00, 3.00);
Transaction sellTransaction1 = new SellTransaction(new DateTime(2006, 01, 01), share, 10, new Price(20.00), 5.00, 3.00);
Transaction buyTransaction2 = new BuyTransaction(new DateTime(2006, 12, 01), share, 10, new Price(30.00), 5.00, 3.00);
Transaction sellTransaction2 = new SellTransaction(new DateTime(2007, 08, 01), share, 10, new Price(50.00), 5.00, 3.00);
// The balance at end of this should be a Buy with 10 shares left.
// These transactions below will not be considered.
Transaction buyTransaction3 = new BuyTransaction(new DateTime(2008, 06, 01), share, 20, new Price(10.00), 5.00, 3.00);
Transaction sellTransaction3 = new SellTransaction(new DateTime(2009, 01, 01), share, 10, new Price(20.00), 5.00, 3.00);
Transaction buyTransaction4 = new BuyTransaction(new DateTime(2008, 12, 01), share, 10, new Price(10.00), 5.00, 3.00);
Transaction sellTransaction4 = new SellTransaction(new DateTime(2009, 08, 01), share, 10, new Price(20.00), 5.00, 3.00);
List<Transaction> listTransaction = new List<Transaction> { buyTransaction1, sellTransaction1, buyTransaction2, sellTransaction2, buyTransaction3, sellTransaction3, buyTransaction4, sellTransaction4 };
ShortTermTaxCalculator TaxCalculator = new ShortTermTaxCalculator(listTransaction, new FinYear(2009));
List<Transaction> listOfValidTransactionsForSTCG = TaxCalculator.GetTransactionBalance();
Assert.AreEqual(10,listOfValidTransactionsForSTCG[0].Quantity);
}
public virtual Price CalculateShortTermTaxForAPairOfTransactions(BuyTransaction buyTransaction, SellTransaction sellTransaction)
{
return sellTransaction.CalculateShortTermTax(buyTransaction);
}
public List<Transaction> GetTransactionBalance()
{
int leftOverBuys = 0;
FinYear theYearBefore = new FinYear(YearForStcg.StartYear-1);
Instrument theBuyInstrument = Transactions[0].Instrument;
for (int i = 0; i < Transactions.Count;)
{
if (Transactions[i].Date.CompareTo(theYearBefore.GetTaxationPeriod().Value.StartDate) > 0)
{
break;
}
if (Transactions[i].GetType() == typeof(BuyTransaction))
{
leftOverBuys += Transactions[i].Quantity;
Transactions.Remove(Transactions[i]);
}
else if (Transactions[i].GetType() == typeof(SellTransaction))
{
leftOverBuys -= Transactions[i].Quantity;
Transactions.Remove(Transactions[i]);
}
}
BuyTransaction theBuyToAppendToList = new BuyTransaction(new DateTime(2008, 06, 01), theBuyInstrument, leftOverBuys, new Price(0),0, 0);
if (theBuyToAppendToList.Quantity > 0)
{
// Transactions.Insert(0, theBuyToAppendToList);
for (int i = 0; i < Transactions.Count;i++)
{
if (Transactions[i].GetType() == typeof (SellTransaction))
{
leftOverBuys -= Transactions[i].Quantity;
if(leftOverBuys<0)
{
Transactions[i].Quantity = -leftOverBuys;
break;
}
else if(leftOverBuys>0)
{
Transactions.Remove(Transactions[i]);
i--;
}
}
}
}
return Transactions;
}
