public void TesteDepositoContaExpecial()
        {
            var ccN = new ContaCorrenteEspecial();
            ccN.Saldo = 750.00m;

            var deposito = new DepositoService(ccN, 500);
            deposito.Executar();

            var expected = 1250.00m;
            var actual = ccN.Saldo;

            Assert.AreEqual(expected, actual);
        }
        public void TesteDepositoContaNormal()
        {
            var ccN = new ContaCorrenteNormal();
            ccN.Saldo = 850.00m;

            var deposito = new DepositoService(ccN, 150);
            deposito.Executar();

            var expected = 1000.00m;
            var actual = ccN.Saldo;

            Assert.AreEqual(expected, actual);

        }