public void GetCustomersTest() { CustomerCRUD.addCustomer(19, "Anna", "Kowalska"); CustomerCRUD.addCustomer(16, "Anna", "Nowak"); IEnumerable <customer> customers = CustomerCRUD.GetCustomersByName("Anna"); Assert.AreEqual(customers.Count(), 2); Assert.AreEqual(customers.ElementAt(0).customer_l_name, "Nowak"); Assert.AreEqual(customers.ElementAt(1).customer_id, 19); CustomerCRUD.deleteCustomer(19); CustomerCRUD.deleteCustomer(16); }