public void Balance_CustomerOK()
{
//arrange
Account account = new Account();
Account account2 = new Account();
Customer customer = new Customer();
customer.RelatedAccounts.Add(account, new Role());
customer.RelatedAccounts.Add(account2, new Role());
IRepository repository = MockRepository.GenerateMock <IRepository>();
ICustomerRepository customerRepository = MockRepository.GenerateMock <ICustomerRepository>();
IAccountRepository accountRepository = MockRepository.GenerateMock <IAccountRepository>();
IDtoCreator <Customer, CustomerDto> custCreator = new CustomerDtoCreator();
IAccountServices accountServices = MockRepository.GenerateMock <IAccountServices>(); //(repository, accountRepository,customerRepository);
accountServices.Expect(x => x.Balance(account2)).Return(-10);
accountServices.Expect(x => x.Balance(account)).Return(-20);
//act
CustomerServices services = new CustomerServices(customerRepository, repository, accountServices, custCreator);
decimal balance = services.CustomerBalance(customer);
//assert
Assert.AreEqual(balance, -30);
accountServices.VerifyAllExpectations();
}