public void GetNonexistentAccountClient()
        {
            BaseClient  client  = new NormalClient(Guid.NewGuid(), "Владелец");
            BaseAccount account = new SavingsAccount(Guid.NewGuid(), 0);

            client.AddAccount(account);
            client.CloseAccount(new Guid());
        }
        public void GetSumNormalAccountClient()
        {
            BaseClient  client  = new NormalClient(Guid.NewGuid(), "Владелец");
            BaseAccount account = new SavingsAccount(Guid.NewGuid(), 0);

            client.AddAccount(account);
            client.CloseAccount(account.Number);

            Assert.AreEqual(false, account.IsActiveAccount);
        }