public void Withdraw(int amount)
{
try
{
foreach (var item in _atmContext.Inventories
.Where(x => x.BillQuantity > 0)
.OrderByDescending(x => x.Denomination))
{
while ((amount - item.Denomination) > -1 && item.BillQuantity > 0)
{
item.BillQuantity -= 1;
amount -= item.Denomination;
}
}
if (amount > 0)
{
RollBack();
throw new ArgumentException("Failure: insufficient funds");
}
else
{
_atmContext.SaveChanges();
}
}
catch (Exception)
{
RollBack();
throw;
}
}
public TarjetaEntity Create(TarjetaRequest.Create tarjeta)
{
TarjetaEntity tarjetaEntity = new TarjetaEntity();
tarjetaEntity.Numero = tarjeta.Numero;
tarjetaEntity.Pin = tarjeta.Pin;
EntityEntry <TarjetaEntity> nuevaTarjeta = _tarjetaRepo.Add(tarjetaEntity);
_context.SaveChanges();
return(nuevaTarjeta.Entity);
}
public static void UpdateTransactionsHistory(AtmContext atmContext, CardAccount account, decimal oldCash, decimal newCash)
{
TransactionScope transaction = new TransactionScope(
TransactionScopeOption.Required,
new TransactionOptions()
{
// Nested transactions must have the same isolation level
IsolationLevel = IsolationLevel.RepeatableRead
});
using (transaction)
{
TransactionsHistory tranHistory = new TransactionsHistory()
{
CardAccount = account,
OldCash = oldCash,
NewCash = newCash
};
atmContext.TransactionsHistories.Add(tranHistory);
atmContext.SaveChanges();
transaction.Complete();
}
}
public ProfileDetails UpdateProfile(ProfileDetails newProfile)
{
_context.Update(newProfile);
_context.SaveChanges();
return(newProfile);
}
//Initilize API unused
public AtmController(AtmContext context)
{
_context = context;
Console.Write("context = {0} ", _context);
Console.WriteLine("AtmController");
if (_context.AtmItems.Count() == 0)
{
Console.WriteLine("If context AtmController");
_context.AtmItems.Add(new AtmItem {
type = "Item1"
});
_context.SaveChanges();
}
}
public void DenominationBalanceTest()
{
//Arrange
var options = new DbContextOptionsBuilder <AtmContext>()
.UseInMemoryDatabase($"CourseDatabaseForTesting{Guid.NewGuid()}")
.Options;
using (var context = new AtmContext(options))
{
var inventories = new Inventory[]
{
new Inventory {
Denomination = 100, BillQuantity = 10
},
new Inventory {
Denomination = 50, BillQuantity = 10
},
new Inventory {
Denomination = 20, BillQuantity = 10
},
new Inventory {
Denomination = 10, BillQuantity = 10
},
new Inventory {
Denomination = 5, BillQuantity = 10
},
new Inventory {
Denomination = 1, BillQuantity = 10
}
};
foreach (Inventory i in inventories)
{
context.Inventories.Add(i);
}
context.SaveChanges();
}
using (var context = new AtmContext(options))
{
var repo = new Models.AtmRepository(context);
//Act
var obj = repo.DenominationBalance(100);
//Assert
Assert.Equal(10, obj.BillQuantity);
}
}
public void WithdrawBills(List <Bill> resultbills, List <Bill> billsInAtm)
{
var correctBillValues = billsInAtm.Select(x => new Bill
{
Amount = x.Amount -= resultbills.FirstOrDefault(y => x.Value == y.Value).Amount,
Value = x.Value
});
var allbills = _context.Bills;
_context.Bills.RemoveRange(allbills);
_context.Bills.AddRange(correctBillValues);
_context.SaveChanges();
}
public static void WithdrawMoney(decimal amount, string cardNumber, string cardPIN)
{
AtmContext atmContext = new AtmContext();
using (atmContext)
{
TransactionScope transaction = new TransactionScope(
TransactionScopeOption.Required,
new TransactionOptions()
{
// This isolation level locks only the current account.
// The account can be read but can't be modified.
// The other accounts are not locked
IsolationLevel = IsolationLevel.RepeatableRead
});
using (transaction)
{
try
{
CardAccount account = atmContext.CardAccounts
.FirstOrDefault(
c => c.CardNumber == cardNumber &&
c.CardPIN == cardPIN &&
c.CardCash >= amount);
decimal oldCash = account.CardCash;
decimal newCash = account.CardCash - amount;
account.CardCash = newCash;
atmContext.SaveChanges();
UpdateTransactionsHistory(atmContext, account, oldCash, newCash);
transaction.Complete();
}
catch (NullReferenceException)
{
Console.WriteLine("No such card exists or the cash in the card is not enough");
}
}
}
}
private static bool WithdrawMoney(int pin, int cardNumber, decimal moneyToWithdraw, AtmContext context)
{
var transactionScope = new TransactionScope(
TransactionScopeOption.RequiresNew,
new TransactionOptions()
{
IsolationLevel = IsolationLevel.RepeatableRead
});
using (transactionScope)
{
var card = context.CardAccounts.Where(c => c.CardNumber == cardNumber).FirstOrDefault();
if (card == null)
{
return(false);
}
var isCardPinValid = card.CardPin == pin;
var isMoneyToWithdrawValid = card.CardCash >= moneyToWithdraw;
if (isCardPinValid && isMoneyToWithdrawValid)
{
card.CardCash -= moneyToWithdraw;
transactionScope.Complete();
}
else
{
return(false);
}
}
AddTransactionToHistory(cardNumber, moneyToWithdraw, context);
context.SaveChanges();
return(true);
}
public void SimpleTest()
{
//Arrange
var options = new DbContextOptionsBuilder <AtmContext>()
.UseInMemoryDatabase($"CourseDatabaseForTesting{Guid.NewGuid()}")
.Options;
using (var context = new AtmContext(options))
{
var inventories = new Inventory[]
{
new Inventory {
Denomination = 100, BillQuantity = 10
},
new Inventory {
Denomination = 50, BillQuantity = 10
},
new Inventory {
Denomination = 20, BillQuantity = 10
},
new Inventory {
Denomination = 10, BillQuantity = 10
},
new Inventory {
Denomination = 5, BillQuantity = 10
},
new Inventory {
Denomination = 1, BillQuantity = 10
}
};
foreach (Inventory i in inventories)
{
context.Inventories.Add(i);
}
context.SaveChanges();
}
using (var context = new AtmContext(options))
{
var repo = new Models.AtmRepository(context);
//Withdraw $208
repo.Withdraw(208);
foreach (var item in repo.Balance)
{
switch (item.Denomination)
{
case 100:
Assert.Equal(8, item.BillQuantity);
break;
case 50:
Assert.Equal(10, item.BillQuantity);
break;
case 20:
Assert.Equal(10, item.BillQuantity);
break;
case 10:
Assert.Equal(10, item.BillQuantity);
break;
case 5:
Assert.Equal(9, item.BillQuantity);
break;
case 1:
Assert.Equal(7, item.BillQuantity);
break;
}
}
//Withdraw $9
repo.Withdraw(9);
foreach (var item in repo.Balance)
{
switch (item.Denomination)
{
case 100:
Assert.Equal(8, item.BillQuantity);
break;
case 50:
Assert.Equal(10, item.BillQuantity);
break;
case 20:
Assert.Equal(10, item.BillQuantity);
break;
case 10:
Assert.Equal(10, item.BillQuantity);
break;
case 5:
Assert.Equal(8, item.BillQuantity);
break;
case 1:
Assert.Equal(3, item.BillQuantity);
break;
}
}
//Withdraw $9
ArgumentException exception = Assert.Throws <ArgumentException>(() => repo.Withdraw(9));
Assert.Equal("Failure: insufficient funds", exception.Message);
//Get Denomination for $20
var obj = repo.DenominationBalance(20);
Assert.Equal(10, obj.BillQuantity);
//Get Denomination for $1
obj = repo.DenominationBalance(1);
Assert.Equal(3, obj.BillQuantity);
//Get Denomination for $100
obj = repo.DenominationBalance(100);
Assert.Equal(8, obj.BillQuantity);
//Restock
repo.Restock();
foreach (var item in repo.Balance)
{
switch (item.Denomination)
{
case 100:
Assert.Equal(10, item.BillQuantity);
break;
case 50:
Assert.Equal(10, item.BillQuantity);
break;
case 20:
Assert.Equal(10, item.BillQuantity);
break;
case 10:
Assert.Equal(10, item.BillQuantity);
break;
case 5:
Assert.Equal(10, item.BillQuantity);
break;
case 1:
Assert.Equal(10, item.BillQuantity);
break;
}
}
}
}
public void WithdrawTest_Success_Many()
{
//Arrange
var options = new DbContextOptionsBuilder <AtmContext>()
.UseInMemoryDatabase($"CourseDatabaseForTesting{Guid.NewGuid()}")
.Options;
using (var context = new AtmContext(options))
{
var inventories = new Inventory[]
{
new Inventory {
Denomination = 100, BillQuantity = 10
},
new Inventory {
Denomination = 50, BillQuantity = 10
},
new Inventory {
Denomination = 20, BillQuantity = 10
},
new Inventory {
Denomination = 10, BillQuantity = 10
},
new Inventory {
Denomination = 5, BillQuantity = 10
},
new Inventory {
Denomination = 1, BillQuantity = 10
}
};
foreach (Inventory i in inventories)
{
context.Inventories.Add(i);
}
context.SaveChanges();
}
using (var context = new AtmContext(options))
{
var repo = new Models.AtmRepository(context);
//Withdraw $208
repo.Withdraw(208);
foreach (var item in repo.Balance)
{
switch (item.Denomination)
{
case 100: Assert.Equal(8, item.BillQuantity);
break;
case 50:
Assert.Equal(10, item.BillQuantity);
break;
case 20:
Assert.Equal(10, item.BillQuantity);
break;
case 10:
Assert.Equal(10, item.BillQuantity);
break;
case 5:
Assert.Equal(9, item.BillQuantity);
break;
case 1:
Assert.Equal(7, item.BillQuantity);
break;
}
}
//Withdraw $1,398
repo.Withdraw(1398);
foreach (var item in repo.Balance)
{
switch (item.Denomination)
{
case 100:
Assert.Equal(0, item.BillQuantity);
break;
case 50:
Assert.Equal(0, item.BillQuantity);
break;
case 20:
Assert.Equal(6, item.BillQuantity);
break;
case 10:
Assert.Equal(9, item.BillQuantity);
break;
case 5:
Assert.Equal(8, item.BillQuantity);
break;
case 1:
Assert.Equal(4, item.BillQuantity);
break;
}
}
//Withdraw $1,398
repo.Restock();
repo.Withdraw(1398);
foreach (var item in repo.Balance)
{
switch (item.Denomination)
{
case 100:
Assert.Equal(0, item.BillQuantity);
break;
case 50:
Assert.Equal(3, item.BillQuantity);
break;
case 20:
Assert.Equal(8, item.BillQuantity);
break;
case 10:
Assert.Equal(10, item.BillQuantity);
break;
case 5:
Assert.Equal(9, item.BillQuantity);
break;
case 1:
Assert.Equal(7, item.BillQuantity);
break;
}
}
//Withdraw $189
repo.Restock();
repo.Withdraw(189);
foreach (var item in repo.Balance)
{
switch (item.Denomination)
{
case 100:
Assert.Equal(9, item.BillQuantity);
break;
case 50:
Assert.Equal(9, item.BillQuantity);
break;
case 20:
Assert.Equal(9, item.BillQuantity);
break;
case 10:
Assert.Equal(9, item.BillQuantity);
break;
case 5:
Assert.Equal(9, item.BillQuantity);
break;
case 1:
Assert.Equal(6, item.BillQuantity);
break;
}
}
}
}
public void WithdrawTest_Failure_Single()
{
//Arrange
var options = new DbContextOptionsBuilder <AtmContext>()
.UseInMemoryDatabase($"CourseDatabaseForTesting{Guid.NewGuid()}")
.Options;
using (var context = new AtmContext(options))
{
var inventories = new Inventory[]
{
new Inventory {
Denomination = 100, BillQuantity = 10
},
new Inventory {
Denomination = 50, BillQuantity = 10
},
new Inventory {
Denomination = 20, BillQuantity = 10
},
new Inventory {
Denomination = 10, BillQuantity = 10
},
new Inventory {
Denomination = 5, BillQuantity = 10
},
new Inventory {
Denomination = 1, BillQuantity = 10
}
};
foreach (Inventory i in inventories)
{
context.Inventories.Add(i);
}
context.SaveChanges();
}
using (var context = new AtmContext(options))
{
var repo = new Models.AtmRepository(context);
//Withdraw $2,000,000
ArgumentException exception = Assert.Throws <ArgumentException>(() => repo.Withdraw(2000000));
Assert.Equal("Failure: insufficient funds", exception.Message);
//Withdraw $208
//This tests that when a failure occurs the changes
// are rolled back to their original amounts.
repo.Withdraw(208);
foreach (var item in repo.Balance)
{
switch (item.Denomination)
{
case 100:
Assert.Equal(8, item.BillQuantity);
break;
case 50:
Assert.Equal(10, item.BillQuantity);
break;
case 20:
Assert.Equal(10, item.BillQuantity);
break;
case 10:
Assert.Equal(10, item.BillQuantity);
break;
case 5:
Assert.Equal(9, item.BillQuantity);
break;
case 1:
Assert.Equal(7, item.BillQuantity);
break;
}
}
}
}