public void deletePhysicalInterfaceFromDatabase() { PhysicalInterfaceDataAccess dataAccess = new PhysicalInterfaceDataAccess(); PhysicalInterface physicalInterface = dataAccess.GetLastEntity<PhysicalInterface>(); dataAccess.Delete(physicalInterface.Id); Assert.IsTrue(dataAccess.GetLastEntity<PhysicalInterface>() == null || physicalInterface.Id == dataAccess.GetLastEntity<PhysicalInterface>().Id); }