public static void Main()
{
BankAccount ba = new BankAccount("Mr. Bryan Walton", 11.99);
ba.Credit(5.77);
ba.Debit(11.22);
Console.WriteLine("Current balance is ${0}", ba.Balance);
}
public void Credit_Simple_Amount_UpdatesBalance()
{
// arrange
double beginningBalance = 11.99;
double creditAmount = 4.55;
double expected = 16.53;
BankAccount account = new BankAccount("Mr. Bryan Walton", beginningBalance);
// act
account.Credit(creditAmount);
// assert
double actual = account.Balance;
Assert.AreEqual(expected, actual, 0.01, "Account not credited correctly");
}
public BankAccount ReadAccount(string name)
{
BankAccount account = null;
var contents = fileWriter.Read(name);
var both = contents.Split('|');
if (both.Length == 2)
{
double balance = 0;
if (double.TryParse(both[1], out balance))
{
account = new BankAccount(both[0], balance);
}
}
return account;
}
public void Debit_WithValidAmount_UpdatesBalance()
{
// arrange
double beginningBalance = 11.99;
double debitAmount = 4.55;
double expected = 7.44;
BankAccount account = new BankAccount("Mr. Bryan Walton",
beginningBalance);
// act
account.Debit(debitAmount);
// assert
double actual = account.Balance;
Assert.AreEqual(expected, actual, 0.001,
"Account not debited correctly");
}
public void DebitAccount_WriteToFile_ThenRead()
{
// arrange
double beginningBalance = 11.99;
double debitAmount = 4.55;
double expected = 7.44;
BankAccount account = new BankAccount("Mr. Bryan Walton", beginningBalance);
account.Debit(debitAmount);
// act
IFileWriter writer = new FileWriter();
BankAccountWriter baw = new BankAccountWriter(writer);
baw.WriteAccount(account);
// assert
var readAccount = baw.ReadAccount(account.Name);
Assert.AreEqual(readAccount.Balance, account.Balance);
Assert.AreEqual(readAccount.Name, account.Name);
}
public void Debit_WhenAmountIsMoreThanBalance_ShouldThrowArgumentOutOfRange()
{
// arrange
double beginningBalance = 11.99;
double debitAmount = 20.0;
BankAccount account = new BankAccount("Mr. Bryan Walton", beginningBalance);
// act
try
{
account.Debit(debitAmount);
}
catch (ArgumentOutOfRangeException e)
{
// assert
StringAssert.Contains(e.Message, BankAccount. DebitAmountExceedsBalanceMessage);
return;
}
Assert.Fail("No exception was thrown.");
}
public void DebitAccount_WriteToFile_ThenRead_Mocked()
{
// arrange
double beginningBalance = 11.99;
double debitAmount = 4.55;
double expected = 7.44;
BankAccount account = new BankAccount("Mr. Bryan Walton", beginningBalance);
account.Debit(debitAmount);
// act
var writer = new Moq.Mock<IFileWriter>();
writer.Setup(w => w.Write(Moq.It.IsAny<string>(), Moq.It.IsAny<string>()));
writer.Setup(w => w.Read(Moq.It.IsAny<string>())).Returns(String.Format("{0}|{1}", account.Name, account.Balance));
BankAccountWriter baw = new BankAccountWriter(writer.Object);
baw.WriteAccount(account);
// assert
var readAccount = baw.ReadAccount(account.Name);
Assert.AreEqual(readAccount.Balance, account.Balance);
Assert.AreEqual(readAccount.Name, account.Name);
}
public void WriteAccount(BankAccount account)
{
fileWriter.Write(account.Name, String.Format("{0}|{1}", account.Name, account.Balance));
}
public void Debit_And_Credit_Multi_Threaded()
{
// arrange
double beginningBalance = 10;
double debitAmount = -1;
double creditAmount = 1;
double expected = 10;
BankAccount account = new BankAccount("Mr. Bryan Walton", beginningBalance);
// act
List<Task> tasks = new List<Task>();
for (int i = 0; i < 10; i++)
{
tasks.Add(Task.Run(() => account.Debit(debitAmount)));
tasks.Add(Task.Run(() => account.Credit(creditAmount)));
}
Task.WaitAll(tasks.ToArray());
// assert
double actual = account.Balance;
Assert.AreEqual(expected, actual, 0.01, "Account balance is not correct");
}
public void Debit_WhenAmountIsLessThanZero_ShouldThrowArgumentOutOfRange()
{
// arrange
double beginningBalance = 11.99;
double debitAmount = -100.00;
BankAccount account = new BankAccount("Mr. Bryan Walton", beginningBalance);
// act
account.Debit(debitAmount);
// assert is handled by ExpectedException
}
public Credit(string number, BankAccount bankAccount) : base(number)
{
this.bankAccountConnectedWithCredit = bankAccount;
}
static void writeAccount(BankAccount account)
{
}
static void decrementAmount(BankAccount account, double money)
{
}
static void incrementAmount(BankAccount account, double money)
{
account.amount = account.amount + money;
}
public abstract bool Transfer(BankAccount toAccount, double amount);