public void Service_CannotAddNonUniqueContact_WillThrow()
{
// Arrange
AddressBook addressBook = new AddressBookBuilder()
.AddContact3()
.Build();
Contact contact = AddressBookBuilder.BuildContact3(addressBook.Id);
IAddressBookRepository repo = Substitute.For <IAddressBookRepository>();
repo.GetContactAsync(contact.Name, contact.Address).Returns(addressBook);
AddressBookService target = new AddressBookService(repo);
// Act, Assert
Assert.ThrowsAsync <ArgumentException>(() => target.AddContactAsync(contact));
}
public async void Service_CanAddUniqueContact()
{
// Arrange
AddressBook addressBook = new AddressBookBuilder()
.Build();
Contact contact = AddressBookBuilder.BuildContact4(addressBook.Id);
IAddressBookRepository repo = Substitute.For <IAddressBookRepository>();
repo.GetContactAsync(contact.Name, contact.Address).Returns(addressBook);
AddressBookService target = new AddressBookService(repo);
// Act
await target.AddContactAsync(contact);
// Assert - repo called.
await repo.Received().SaveAsync(addressBook);
Assert.Contains(contact, addressBook.Contacts);
}