public void Possible_Deposit_With_Debt()
{
withDebt.Deposit(50);
Assert.AreEqual(withDebt.GetDebtBalance(), 0);
Assert.AreEqual(accWithDebt.GetBalance(), 0);
}
public void Possible_Withdrawal()
{
debtacc.Withdraw(300);
Assert.AreEqual(debtacc.GetDebtBalance(), 0);
Assert.AreEqual(acc.GetBalance(), 0);
}