public void Should_notify_the_customer_that_his_membership_was_activated()
{
var customer = new Customer(Mail);
var membership = new Membership("Premium membership");
customer.ActivateMembership(membership);
_domainEventNotifier
.Received().NotifyAbout(Arg.Is <DomainEvent>(@event => @event is MembershipActivated));
}
public void Should_add_a_membership_to_a_customer()
{
var customer = new Customer(Mail);
var membership = new Membership("Premium membership");
var expectedCustomerMemberships = new[] { new CustomerMembership(membership, customer) };
customer.ActivateMembership(membership);
Assert.Equal(expectedCustomerMemberships, customer.Memberships);
}