Quick Start Source Code - samuelneff/docs GitHub Wiki

using System;
using NUnit.Framework;
namespace Bank
{
public class Account
{
private decimal balance;
private decimal minimumBalance = 10m;
public void Deposit(decimal amount)
{
  balance += amount;
}

public void Withdraw(decimal amount)
{
  balance -= amount;
}

public void TransferFunds(Account destination, decimal amount)
{
  if (balance - amount < minimumBalance)
    throw new InsufficientFundsException();

  destination.Deposit(amount);

  Withdraw(amount);
}

public decimal Balance
{
  get { return balance; }
}

public decimal MinimumBalance
{
  get { return minimumBalance; }
}

}
public class InsufficientFundsException : ApplicationException
{
}
[TestFixture]
public class AccountTest
{
Account source;
Account destination;
[SetUp]
public void Init()
{
  source = new Account();
  source.Deposit(200m);

  destination = new Account();
  destination.Deposit(150m);
}

[Test]
public void TransferFunds()
{
  source.TransferFunds(destination, 100m);

  Assert.AreEqual(250m, destination.Balance);
  Assert.AreEqual(100m, source.Balance);
}

[Test]
[ExpectedException(typeof(InsufficientFundsException))]
public void TransferWithInsufficientFunds()
{
  source.TransferFunds(destination, 300m);
}

[Test]
[Ignore("Decide how to implement transaction management")]
public void TransferWithInsufficientFundsAtomicity()
{
  try
  {
    source.TransferFunds(destination, 300m);
  }
  catch (InsufficientFundsException expected)
  {
  }

  Assert.AreEqual(200m, source.Balance);
  Assert.AreEqual(150m, destination.Balance);
}

}
}