public void AddCustomerToListofInvitees_PositiveTest1()
{
var custCollection = new CustomerCollection();
var customer = GetCustomer();
custCollection.AddCustomer(customer);
var invitation = GetInvitation(giftR, giftE, custCollection);
var list = invitation.GetListofInvitees();
Assert.AreEqual(((CustomerCollection)list).Count(), 1);
}
