public async Task AddNewCustomerAsync_ShouldReturnNull_WhenCustomerDoesExist()
{
//Arrange
_customerRepository.GetByEmailAsync(Arg.Any <string>()).Returns(_existingCustomer);
//Act
var sut = new CustomerService(_customerRepository);
var cutomerReturn = await sut.AddNewCustomerAsync("name", _existingCustomer.Email);
//Assert
Assert.Null(cutomerReturn);
}
public async Task AddNewCustomerAsync_ShouldPassCustomerToRepository_WhenCustomerDoesNotExist()
{
//Arrange
string email = "fake-email";
_customerRepository.GetByEmailAsync(email).Returns(_nullReturn);
//Act
var sut = new CustomerService(_customerRepository);
var cutomerReturn = await sut.AddNewCustomerAsync("name", email);
//Assert
await _customerRepository.Received(1).InsertAsync(
Arg.Is <Customer>(
x =>
x.Email == email &&
x.Name == "name"
)
);
}
