public void test12AccountsKnowsItsTransactions()
{
ReceptiveAccount account1 = new ReceptiveAccount();
Deposit deposit1 = Deposit.registerForOn(100, account1);
Assert.AreEqual(1, account1.transactions().Count);
Assert.IsTrue(account1.transactions().Contains(deposit1));
}
private double investmentEarnings(ReceptiveAccount account)
{
return(account.transactions().Sum(transaction => transaction.AfectInvestmentEarningBy()));
}
private double accountTransferNet(ReceptiveAccount account)
{
return(account.transactions().Sum(transaction => transaction.AfectNetBy()));
}
private List <String> accountSummaryLines(ReceptiveAccount fromAccount)
{
return(fromAccount.transactions().Select(account => account.Description()).ToList());
}