public void GetAll_ShouldReturnItems() { // The Order is Matter! this method should be on top. IDistributorService service = new DistributorService(); var response = service.GetAll(); Assert.IsTrue(response.Status == StatusFlag.Success); // We know from TestDataSource.cs var dataList = (List <Distributor>)response.Data; Assert.AreEqual(3, dataList.Count); }