public void AccountContextOK()
{
IAccountManager manager = new AccountManager10percent();
AccountContext context = new AccountContext(manager);
Account accFrom = new Account("from", 200m, Currency.USD);
Account accTo = new Account("to", 50m, Currency.USD);
CommissionAccount accCommission = new CommissionAccount("commission", 0m, Currency.USD);
accCommission.SubscribeToCommission(context.Manager);
context.Transaction(accFrom, accTo, 100m, Currency.USD);
Assert.AreEqual(90m, accFrom.Money.Amount);
Assert.AreEqual(150m, accTo.Money.Amount);
Assert.AreEqual(10m, accCommission.Money.Amount);
}