public void BankAccount_transfer_changes_balances()
{
_bankAccount.Deposit(10);
var destinationAccount = new BankAccount();
_bankAccount.TransferTo(destinationAccount,7);
_bankAccount.Balance.Should().Be(3);
destinationAccount.Balance.Should().Be(7);
}
public void BankAccount_transfer_throws_when_exceeds_balance()
{
_bankAccount.Deposit(10);
var destinationAccount = new BankAccount();
var exception = Record.Exception(() => _bankAccount.TransferTo(destinationAccount, 11));
exception.Should().BeOfType<InvalidOperationException>();
exception.Message.Should().Be("Insufficient funds. Current balace: 10, attempted withdrawal: 11.");
}
public void BankAccount_failed_transfer_keeps_balances_of_both_involved_accounts_intact()
{
_bankAccount.Deposit(10);
var destinationAccount = new BankAccount();
Record.Exception(() => _bankAccount.TransferTo(destinationAccount, 11));
_bankAccount.Balance.Should().Be(10);
destinationAccount.Balance.Should().Be(decimal.Zero);
}
public void TransferTo(BankAccount destinationAccount, decimal amount)
{
Withdraw(amount);
destinationAccount.Deposit(amount);
}